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4823 don't open-code NSEC2MSEC and MSEC2NSEC
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--- old/usr/src/uts/common/inet/ip/ip.c
+++ new/usr/src/uts/common/inet/ip/ip.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright (c) 1990 Mentat Inc.
25 25 * Copyright (c) 2012 Joyent, Inc. All rights reserved.
26 26 * Copyright (c) 2014, OmniTI Computer Consulting, Inc. All rights reserved.
27 27 */
28 28
29 29 #include <sys/types.h>
30 30 #include <sys/stream.h>
31 31 #include <sys/dlpi.h>
32 32 #include <sys/stropts.h>
33 33 #include <sys/sysmacros.h>
34 34 #include <sys/strsubr.h>
35 35 #include <sys/strlog.h>
36 36 #include <sys/strsun.h>
37 37 #include <sys/zone.h>
38 38 #define _SUN_TPI_VERSION 2
39 39 #include <sys/tihdr.h>
40 40 #include <sys/xti_inet.h>
41 41 #include <sys/ddi.h>
42 42 #include <sys/suntpi.h>
43 43 #include <sys/cmn_err.h>
44 44 #include <sys/debug.h>
45 45 #include <sys/kobj.h>
46 46 #include <sys/modctl.h>
47 47 #include <sys/atomic.h>
48 48 #include <sys/policy.h>
49 49 #include <sys/priv.h>
50 50 #include <sys/taskq.h>
51 51
52 52 #include <sys/systm.h>
53 53 #include <sys/param.h>
54 54 #include <sys/kmem.h>
55 55 #include <sys/sdt.h>
56 56 #include <sys/socket.h>
57 57 #include <sys/vtrace.h>
58 58 #include <sys/isa_defs.h>
59 59 #include <sys/mac.h>
60 60 #include <net/if.h>
61 61 #include <net/if_arp.h>
62 62 #include <net/route.h>
63 63 #include <sys/sockio.h>
64 64 #include <netinet/in.h>
65 65 #include <net/if_dl.h>
66 66
67 67 #include <inet/common.h>
68 68 #include <inet/mi.h>
69 69 #include <inet/mib2.h>
70 70 #include <inet/nd.h>
71 71 #include <inet/arp.h>
72 72 #include <inet/snmpcom.h>
73 73 #include <inet/optcom.h>
74 74 #include <inet/kstatcom.h>
75 75
76 76 #include <netinet/igmp_var.h>
77 77 #include <netinet/ip6.h>
78 78 #include <netinet/icmp6.h>
79 79 #include <netinet/sctp.h>
80 80
81 81 #include <inet/ip.h>
82 82 #include <inet/ip_impl.h>
83 83 #include <inet/ip6.h>
84 84 #include <inet/ip6_asp.h>
85 85 #include <inet/tcp.h>
86 86 #include <inet/tcp_impl.h>
87 87 #include <inet/ip_multi.h>
88 88 #include <inet/ip_if.h>
89 89 #include <inet/ip_ire.h>
90 90 #include <inet/ip_ftable.h>
91 91 #include <inet/ip_rts.h>
92 92 #include <inet/ip_ndp.h>
93 93 #include <inet/ip_listutils.h>
94 94 #include <netinet/igmp.h>
95 95 #include <netinet/ip_mroute.h>
96 96 #include <inet/ipp_common.h>
97 97
98 98 #include <net/pfkeyv2.h>
99 99 #include <inet/sadb.h>
100 100 #include <inet/ipsec_impl.h>
101 101 #include <inet/iptun/iptun_impl.h>
102 102 #include <inet/ipdrop.h>
103 103 #include <inet/ip_netinfo.h>
104 104 #include <inet/ilb_ip.h>
105 105
106 106 #include <sys/ethernet.h>
107 107 #include <net/if_types.h>
108 108 #include <sys/cpuvar.h>
109 109
110 110 #include <ipp/ipp.h>
111 111 #include <ipp/ipp_impl.h>
112 112 #include <ipp/ipgpc/ipgpc.h>
113 113
114 114 #include <sys/pattr.h>
115 115 #include <inet/ipclassifier.h>
116 116 #include <inet/sctp_ip.h>
117 117 #include <inet/sctp/sctp_impl.h>
118 118 #include <inet/udp_impl.h>
119 119 #include <inet/rawip_impl.h>
120 120 #include <inet/rts_impl.h>
121 121
122 122 #include <sys/tsol/label.h>
123 123 #include <sys/tsol/tnet.h>
124 124
125 125 #include <sys/squeue_impl.h>
126 126 #include <inet/ip_arp.h>
127 127
128 128 #include <sys/clock_impl.h> /* For LBOLT_FASTPATH{,64} */
129 129
130 130 /*
131 131 * Values for squeue switch:
132 132 * IP_SQUEUE_ENTER_NODRAIN: SQ_NODRAIN
133 133 * IP_SQUEUE_ENTER: SQ_PROCESS
134 134 * IP_SQUEUE_FILL: SQ_FILL
135 135 */
136 136 int ip_squeue_enter = IP_SQUEUE_ENTER; /* Setable in /etc/system */
137 137
138 138 int ip_squeue_flag;
139 139
140 140 /*
141 141 * Setable in /etc/system
142 142 */
143 143 int ip_poll_normal_ms = 100;
144 144 int ip_poll_normal_ticks = 0;
145 145 int ip_modclose_ackwait_ms = 3000;
146 146
147 147 /*
148 148 * It would be nice to have these present only in DEBUG systems, but the
149 149 * current design of the global symbol checking logic requires them to be
150 150 * unconditionally present.
151 151 */
152 152 uint_t ip_thread_data; /* TSD key for debug support */
153 153 krwlock_t ip_thread_rwlock;
154 154 list_t ip_thread_list;
155 155
156 156 /*
157 157 * Structure to represent a linked list of msgblks. Used by ip_snmp_ functions.
158 158 */
159 159
160 160 struct listptr_s {
161 161 mblk_t *lp_head; /* pointer to the head of the list */
162 162 mblk_t *lp_tail; /* pointer to the tail of the list */
163 163 };
164 164
165 165 typedef struct listptr_s listptr_t;
166 166
167 167 /*
168 168 * This is used by ip_snmp_get_mib2_ip_route_media and
169 169 * ip_snmp_get_mib2_ip6_route_media to carry the lists of return data.
170 170 */
171 171 typedef struct iproutedata_s {
172 172 uint_t ird_idx;
173 173 uint_t ird_flags; /* see below */
174 174 listptr_t ird_route; /* ipRouteEntryTable */
175 175 listptr_t ird_netmedia; /* ipNetToMediaEntryTable */
176 176 listptr_t ird_attrs; /* ipRouteAttributeTable */
177 177 } iproutedata_t;
178 178
179 179 /* Include ire_testhidden and IRE_IF_CLONE routes */
180 180 #define IRD_REPORT_ALL 0x01
181 181
182 182 /*
183 183 * Cluster specific hooks. These should be NULL when booted as a non-cluster
184 184 */
185 185
186 186 /*
187 187 * Hook functions to enable cluster networking
188 188 * On non-clustered systems these vectors must always be NULL.
189 189 *
190 190 * Hook function to Check ip specified ip address is a shared ip address
191 191 * in the cluster
192 192 *
193 193 */
194 194 int (*cl_inet_isclusterwide)(netstackid_t stack_id, uint8_t protocol,
195 195 sa_family_t addr_family, uint8_t *laddrp, void *args) = NULL;
196 196
197 197 /*
198 198 * Hook function to generate cluster wide ip fragment identifier
199 199 */
200 200 uint32_t (*cl_inet_ipident)(netstackid_t stack_id, uint8_t protocol,
201 201 sa_family_t addr_family, uint8_t *laddrp, uint8_t *faddrp,
202 202 void *args) = NULL;
203 203
204 204 /*
205 205 * Hook function to generate cluster wide SPI.
206 206 */
207 207 void (*cl_inet_getspi)(netstackid_t, uint8_t, uint8_t *, size_t,
208 208 void *) = NULL;
209 209
210 210 /*
211 211 * Hook function to verify if the SPI is already utlized.
212 212 */
213 213
214 214 int (*cl_inet_checkspi)(netstackid_t, uint8_t, uint32_t, void *) = NULL;
215 215
216 216 /*
217 217 * Hook function to delete the SPI from the cluster wide repository.
218 218 */
219 219
220 220 void (*cl_inet_deletespi)(netstackid_t, uint8_t, uint32_t, void *) = NULL;
221 221
222 222 /*
223 223 * Hook function to inform the cluster when packet received on an IDLE SA
224 224 */
225 225
226 226 void (*cl_inet_idlesa)(netstackid_t, uint8_t, uint32_t, sa_family_t,
227 227 in6_addr_t, in6_addr_t, void *) = NULL;
228 228
229 229 /*
230 230 * Synchronization notes:
231 231 *
232 232 * IP is a fully D_MP STREAMS module/driver. Thus it does not depend on any
233 233 * MT level protection given by STREAMS. IP uses a combination of its own
234 234 * internal serialization mechanism and standard Solaris locking techniques.
235 235 * The internal serialization is per phyint. This is used to serialize
236 236 * plumbing operations, IPMP operations, most set ioctls, etc.
237 237 *
238 238 * Plumbing is a long sequence of operations involving message
239 239 * exchanges between IP, ARP and device drivers. Many set ioctls are typically
240 240 * involved in plumbing operations. A natural model is to serialize these
241 241 * ioctls one per ill. For example plumbing of hme0 and qfe0 can go on in
242 242 * parallel without any interference. But various set ioctls on hme0 are best
243 243 * serialized, along with IPMP operations and processing of DLPI control
244 244 * messages received from drivers on a per phyint basis. This serialization is
245 245 * provided by the ipsq_t and primitives operating on this. Details can
246 246 * be found in ip_if.c above the core primitives operating on ipsq_t.
247 247 *
248 248 * Lookups of an ipif or ill by a thread return a refheld ipif / ill.
249 249 * Simiarly lookup of an ire by a thread also returns a refheld ire.
250 250 * In addition ipif's and ill's referenced by the ire are also indirectly
251 251 * refheld. Thus no ipif or ill can vanish as long as an ipif is refheld
252 252 * directly or indirectly. For example an SIOCSLIFADDR ioctl that changes the
253 253 * address of an ipif has to go through the ipsq_t. This ensures that only
254 254 * one such exclusive operation proceeds at any time on the ipif. It then
255 255 * waits for all refcnts
256 256 * associated with this ipif to come down to zero. The address is changed
257 257 * only after the ipif has been quiesced. Then the ipif is brought up again.
258 258 * More details are described above the comment in ip_sioctl_flags.
259 259 *
260 260 * Packet processing is based mostly on IREs and are fully multi-threaded
261 261 * using standard Solaris MT techniques.
262 262 *
263 263 * There are explicit locks in IP to handle:
264 264 * - The ip_g_head list maintained by mi_open_link() and friends.
265 265 *
266 266 * - The reassembly data structures (one lock per hash bucket)
267 267 *
268 268 * - conn_lock is meant to protect conn_t fields. The fields actually
269 269 * protected by conn_lock are documented in the conn_t definition.
270 270 *
271 271 * - ire_lock to protect some of the fields of the ire, IRE tables
272 272 * (one lock per hash bucket). Refer to ip_ire.c for details.
273 273 *
274 274 * - ndp_g_lock and ncec_lock for protecting NCEs.
275 275 *
276 276 * - ill_lock protects fields of the ill and ipif. Details in ip.h
277 277 *
278 278 * - ill_g_lock: This is a global reader/writer lock. Protects the following
279 279 * * The AVL tree based global multi list of all ills.
280 280 * * The linked list of all ipifs of an ill
281 281 * * The <ipsq-xop> mapping
282 282 * * <ill-phyint> association
283 283 * Insertion/deletion of an ill in the system, insertion/deletion of an ipif
284 284 * into an ill, changing the <ipsq-xop> mapping of an ill, changing the
285 285 * <ill-phyint> assoc of an ill will all have to hold the ill_g_lock as
286 286 * writer for the actual duration of the insertion/deletion/change.
287 287 *
288 288 * - ill_lock: This is a per ill mutex.
289 289 * It protects some members of the ill_t struct; see ip.h for details.
290 290 * It also protects the <ill-phyint> assoc.
291 291 * It also protects the list of ipifs hanging off the ill.
292 292 *
293 293 * - ipsq_lock: This is a per ipsq_t mutex lock.
294 294 * This protects some members of the ipsq_t struct; see ip.h for details.
295 295 * It also protects the <ipsq-ipxop> mapping
296 296 *
297 297 * - ipx_lock: This is a per ipxop_t mutex lock.
298 298 * This protects some members of the ipxop_t struct; see ip.h for details.
299 299 *
300 300 * - phyint_lock: This is a per phyint mutex lock. Protects just the
301 301 * phyint_flags
302 302 *
303 303 * - ip_addr_avail_lock: This is used to ensure the uniqueness of IP addresses.
304 304 * This lock is held in ipif_up_done and the ipif is marked IPIF_UP and the
305 305 * uniqueness check also done atomically.
306 306 *
307 307 * - ill_g_usesrc_lock: This readers/writer lock protects the usesrc
308 308 * group list linked by ill_usesrc_grp_next. It also protects the
309 309 * ill_usesrc_ifindex field. It is taken as a writer when a member of the
310 310 * group is being added or deleted. This lock is taken as a reader when
311 311 * walking the list/group(eg: to get the number of members in a usesrc group).
312 312 * Note, it is only necessary to take this lock if the ill_usesrc_grp_next
313 313 * field is changing state i.e from NULL to non-NULL or vice-versa. For
314 314 * example, it is not necessary to take this lock in the initial portion
315 315 * of ip_sioctl_slifusesrc or at all in ip_sioctl_flags since these
316 316 * operations are executed exclusively and that ensures that the "usesrc
317 317 * group state" cannot change. The "usesrc group state" change can happen
318 318 * only in the latter part of ip_sioctl_slifusesrc and in ill_delete.
319 319 *
320 320 * Changing <ill-phyint>, <ipsq-xop> assocications:
321 321 *
322 322 * To change the <ill-phyint> association, the ill_g_lock must be held
323 323 * as writer, and the ill_locks of both the v4 and v6 instance of the ill
324 324 * must be held.
325 325 *
326 326 * To change the <ipsq-xop> association, the ill_g_lock must be held as
327 327 * writer, the ipsq_lock must be held, and one must be writer on the ipsq.
328 328 * This is only done when ills are added or removed from IPMP groups.
329 329 *
330 330 * To add or delete an ipif from the list of ipifs hanging off the ill,
331 331 * ill_g_lock (writer) and ill_lock must be held and the thread must be
332 332 * a writer on the associated ipsq.
333 333 *
334 334 * To add or delete an ill to the system, the ill_g_lock must be held as
335 335 * writer and the thread must be a writer on the associated ipsq.
336 336 *
337 337 * To add or delete an ilm to an ill, the ill_lock must be held and the thread
338 338 * must be a writer on the associated ipsq.
339 339 *
340 340 * Lock hierarchy
341 341 *
342 342 * Some lock hierarchy scenarios are listed below.
343 343 *
344 344 * ill_g_lock -> conn_lock -> ill_lock -> ipsq_lock -> ipx_lock
345 345 * ill_g_lock -> ill_lock(s) -> phyint_lock
346 346 * ill_g_lock -> ndp_g_lock -> ill_lock -> ncec_lock
347 347 * ill_g_lock -> ip_addr_avail_lock
348 348 * conn_lock -> irb_lock -> ill_lock -> ire_lock
349 349 * ill_g_lock -> ip_g_nd_lock
350 350 * ill_g_lock -> ips_ipmp_lock -> ill_lock -> nce_lock
351 351 * ill_g_lock -> ndp_g_lock -> ill_lock -> ncec_lock -> nce_lock
352 352 * arl_lock -> ill_lock
353 353 * ips_ire_dep_lock -> irb_lock
354 354 *
355 355 * When more than 1 ill lock is needed to be held, all ill lock addresses
356 356 * are sorted on address and locked starting from highest addressed lock
357 357 * downward.
358 358 *
359 359 * Multicast scenarios
360 360 * ips_ill_g_lock -> ill_mcast_lock
361 361 * conn_ilg_lock -> ips_ill_g_lock -> ill_lock
362 362 * ill_mcast_serializer -> ill_mcast_lock -> ips_ipmp_lock -> ill_lock
363 363 * ill_mcast_serializer -> ill_mcast_lock -> connf_lock -> conn_lock
364 364 * ill_mcast_serializer -> ill_mcast_lock -> conn_ilg_lock
365 365 * ill_mcast_serializer -> ill_mcast_lock -> ips_igmp_timer_lock
366 366 *
367 367 * IPsec scenarios
368 368 *
369 369 * ipsa_lock -> ill_g_lock -> ill_lock
370 370 * ill_g_usesrc_lock -> ill_g_lock -> ill_lock
371 371 *
372 372 * Trusted Solaris scenarios
373 373 *
374 374 * igsa_lock -> gcgrp_rwlock -> gcgrp_lock
375 375 * igsa_lock -> gcdb_lock
376 376 * gcgrp_rwlock -> ire_lock
377 377 * gcgrp_rwlock -> gcdb_lock
378 378 *
379 379 * squeue(sq_lock), flow related (ft_lock, fe_lock) locking
380 380 *
381 381 * cpu_lock --> ill_lock --> sqset_lock --> sq_lock
382 382 * sq_lock -> conn_lock -> QLOCK(q)
383 383 * ill_lock -> ft_lock -> fe_lock
384 384 *
385 385 * Routing/forwarding table locking notes:
386 386 *
387 387 * Lock acquisition order: Radix tree lock, irb_lock.
388 388 * Requirements:
389 389 * i. Walker must not hold any locks during the walker callback.
390 390 * ii Walker must not see a truncated tree during the walk because of any node
391 391 * deletion.
392 392 * iii Existing code assumes ire_bucket is valid if it is non-null and is used
393 393 * in many places in the code to walk the irb list. Thus even if all the
394 394 * ires in a bucket have been deleted, we still can't free the radix node
395 395 * until the ires have actually been inactive'd (freed).
396 396 *
397 397 * Tree traversal - Need to hold the global tree lock in read mode.
398 398 * Before dropping the global tree lock, need to either increment the ire_refcnt
399 399 * to ensure that the radix node can't be deleted.
400 400 *
401 401 * Tree add - Need to hold the global tree lock in write mode to add a
402 402 * radix node. To prevent the node from being deleted, increment the
403 403 * irb_refcnt, after the node is added to the tree. The ire itself is
404 404 * added later while holding the irb_lock, but not the tree lock.
405 405 *
406 406 * Tree delete - Need to hold the global tree lock and irb_lock in write mode.
407 407 * All associated ires must be inactive (i.e. freed), and irb_refcnt
408 408 * must be zero.
409 409 *
410 410 * Walker - Increment irb_refcnt before calling the walker callback. Hold the
411 411 * global tree lock (read mode) for traversal.
412 412 *
413 413 * IRE dependencies - In some cases we hold ips_ire_dep_lock across ire_refrele
414 414 * hence we will acquire irb_lock while holding ips_ire_dep_lock.
415 415 *
416 416 * IPsec notes :
417 417 *
418 418 * IP interacts with the IPsec code (AH/ESP) by storing IPsec attributes
419 419 * in the ip_xmit_attr_t ip_recv_attr_t. For outbound datagrams, the
420 420 * ip_xmit_attr_t has the
421 421 * information used by the IPsec code for applying the right level of
422 422 * protection. The information initialized by IP in the ip_xmit_attr_t
423 423 * is determined by the per-socket policy or global policy in the system.
424 424 * For inbound datagrams, the ip_recv_attr_t
425 425 * starts out with nothing in it. It gets filled
426 426 * with the right information if it goes through the AH/ESP code, which
427 427 * happens if the incoming packet is secure. The information initialized
428 428 * by AH/ESP, is later used by IP (during fanouts to ULP) to see whether
429 429 * the policy requirements needed by per-socket policy or global policy
430 430 * is met or not.
431 431 *
432 432 * For fully connected sockets i.e dst, src [addr, port] is known,
433 433 * conn_policy_cached is set indicating that policy has been cached.
434 434 * conn_in_enforce_policy may or may not be set depending on whether
435 435 * there is a global policy match or per-socket policy match.
436 436 * Policy inheriting happpens in ip_policy_set once the destination is known.
437 437 * Once the right policy is set on the conn_t, policy cannot change for
438 438 * this socket. This makes life simpler for TCP (UDP ?) where
439 439 * re-transmissions go out with the same policy. For symmetry, policy
440 440 * is cached for fully connected UDP sockets also. Thus if policy is cached,
441 441 * it also implies that policy is latched i.e policy cannot change
442 442 * on these sockets. As we have the right policy on the conn, we don't
443 443 * have to lookup global policy for every outbound and inbound datagram
444 444 * and thus serving as an optimization. Note that a global policy change
445 445 * does not affect fully connected sockets if they have policy. If fully
446 446 * connected sockets did not have any policy associated with it, global
447 447 * policy change may affect them.
448 448 *
449 449 * IP Flow control notes:
450 450 * ---------------------
451 451 * Non-TCP streams are flow controlled by IP. The way this is accomplished
452 452 * differs when ILL_CAPAB_DLD_DIRECT is enabled for that IP instance. When
453 453 * ILL_DIRECT_CAPABLE(ill) is TRUE, IP can do direct function calls into
454 454 * GLDv3. Otherwise packets are sent down to lower layers using STREAMS
455 455 * functions.
456 456 *
457 457 * Per Tx ring udp flow control:
458 458 * This is applicable only when ILL_CAPAB_DLD_DIRECT capability is set in
459 459 * the ill (i.e. ILL_DIRECT_CAPABLE(ill) is true).
460 460 *
461 461 * The underlying link can expose multiple Tx rings to the GLDv3 mac layer.
462 462 * To achieve best performance, outgoing traffic need to be fanned out among
463 463 * these Tx ring. mac_tx() is called (via str_mdata_fastpath_put()) to send
464 464 * traffic out of the NIC and it takes a fanout hint. UDP connections pass
465 465 * the address of connp as fanout hint to mac_tx(). Under flow controlled
466 466 * condition, mac_tx() returns a non-NULL cookie (ip_mac_tx_cookie_t). This
467 467 * cookie points to a specific Tx ring that is blocked. The cookie is used to
468 468 * hash into an idl_tx_list[] entry in idl_tx_list[] array. Each idl_tx_list_t
469 469 * point to drain_lists (idl_t's). These drain list will store the blocked UDP
470 470 * connp's. The drain list is not a single list but a configurable number of
471 471 * lists.
472 472 *
473 473 * The diagram below shows idl_tx_list_t's and their drain_lists. ip_stack_t
474 474 * has an array of idl_tx_list_t. The size of the array is TX_FANOUT_SIZE
475 475 * which is equal to 128. This array in turn contains a pointer to idl_t[],
476 476 * the ip drain list. The idl_t[] array size is MIN(max_ncpus, 8). The drain
477 477 * list will point to the list of connp's that are flow controlled.
478 478 *
479 479 * --------------- ------- ------- -------
480 480 * |->|drain_list[0]|-->|connp|-->|connp|-->|connp|-->
481 481 * | --------------- ------- ------- -------
482 482 * | --------------- ------- ------- -------
483 483 * |->|drain_list[1]|-->|connp|-->|connp|-->|connp|-->
484 484 * ---------------- | --------------- ------- ------- -------
485 485 * |idl_tx_list[0]|->| --------------- ------- ------- -------
486 486 * ---------------- |->|drain_list[2]|-->|connp|-->|connp|-->|connp|-->
487 487 * | --------------- ------- ------- -------
488 488 * . . . . .
489 489 * | --------------- ------- ------- -------
490 490 * |->|drain_list[n]|-->|connp|-->|connp|-->|connp|-->
491 491 * --------------- ------- ------- -------
492 492 * --------------- ------- ------- -------
493 493 * |->|drain_list[0]|-->|connp|-->|connp|-->|connp|-->
494 494 * | --------------- ------- ------- -------
495 495 * | --------------- ------- ------- -------
496 496 * ---------------- |->|drain_list[1]|-->|connp|-->|connp|-->|connp|-->
497 497 * |idl_tx_list[1]|->| --------------- ------- ------- -------
498 498 * ---------------- | . . . .
499 499 * | --------------- ------- ------- -------
500 500 * |->|drain_list[n]|-->|connp|-->|connp|-->|connp|-->
501 501 * --------------- ------- ------- -------
502 502 * .....
503 503 * ----------------
504 504 * |idl_tx_list[n]|-> ...
505 505 * ----------------
506 506 *
507 507 * When mac_tx() returns a cookie, the cookie is hashed into an index into
508 508 * ips_idl_tx_list[], and conn_drain_insert() is called with the idl_tx_list
509 509 * to insert the conn onto. conn_drain_insert() asserts flow control for the
510 510 * sockets via su_txq_full() (non-STREAMS) or QFULL on conn_wq (STREAMS).
511 511 * Further, conn_blocked is set to indicate that the conn is blocked.
512 512 *
513 513 * GLDv3 calls ill_flow_enable() when flow control is relieved. The cookie
514 514 * passed in the call to ill_flow_enable() identifies the blocked Tx ring and
515 515 * is again hashed to locate the appropriate idl_tx_list, which is then
516 516 * drained via conn_walk_drain(). conn_walk_drain() goes through each conn in
517 517 * the drain list and calls conn_drain_remove() to clear flow control (via
518 518 * calling su_txq_full() or clearing QFULL), and remove the conn from the
519 519 * drain list.
520 520 *
521 521 * Note that the drain list is not a single list but a (configurable) array of
522 522 * lists (8 elements by default). Synchronization between drain insertion and
523 523 * flow control wakeup is handled by using idl_txl->txl_lock, and only
524 524 * conn_drain_insert() and conn_drain_remove() manipulate the drain list.
525 525 *
526 526 * Flow control via STREAMS is used when ILL_DIRECT_CAPABLE() returns FALSE.
527 527 * On the send side, if the packet cannot be sent down to the driver by IP
528 528 * (canput() fails), ip_xmit() drops the packet and returns EWOULDBLOCK to the
529 529 * caller, who may then invoke ixa_check_drain_insert() to insert the conn on
530 530 * the 0'th drain list. When ip_wsrv() runs on the ill_wq because flow
531 531 * control has been relieved, the blocked conns in the 0'th drain list are
532 532 * drained as in the non-STREAMS case.
533 533 *
534 534 * In both the STREAMS and non-STREAMS cases, the sockfs upcall to set QFULL
535 535 * is done when the conn is inserted into the drain list (conn_drain_insert())
536 536 * and cleared when the conn is removed from the it (conn_drain_remove()).
537 537 *
538 538 * IPQOS notes:
539 539 *
540 540 * IPQoS Policies are applied to packets using IPPF (IP Policy framework)
541 541 * and IPQoS modules. IPPF includes hooks in IP at different control points
542 542 * (callout positions) which direct packets to IPQoS modules for policy
543 543 * processing. Policies, if present, are global.
544 544 *
545 545 * The callout positions are located in the following paths:
546 546 * o local_in (packets destined for this host)
547 547 * o local_out (packets orginating from this host )
548 548 * o fwd_in (packets forwarded by this m/c - inbound)
549 549 * o fwd_out (packets forwarded by this m/c - outbound)
550 550 * Hooks at these callout points can be enabled/disabled using the ndd variable
551 551 * ip_policy_mask (a bit mask with the 4 LSB indicating the callout positions).
552 552 * By default all the callout positions are enabled.
553 553 *
554 554 * Outbound (local_out)
555 555 * Hooks are placed in ire_send_wire_v4 and ire_send_wire_v6.
556 556 *
557 557 * Inbound (local_in)
558 558 * Hooks are placed in ip_fanout_v4 and ip_fanout_v6.
559 559 *
560 560 * Forwarding (in and out)
561 561 * Hooks are placed in ire_recv_forward_v4/v6.
562 562 *
563 563 * IP Policy Framework processing (IPPF processing)
564 564 * Policy processing for a packet is initiated by ip_process, which ascertains
565 565 * that the classifier (ipgpc) is loaded and configured, failing which the
566 566 * packet resumes normal processing in IP. If the clasifier is present, the
567 567 * packet is acted upon by one or more IPQoS modules (action instances), per
568 568 * filters configured in ipgpc and resumes normal IP processing thereafter.
569 569 * An action instance can drop a packet in course of its processing.
570 570 *
571 571 * Zones notes:
572 572 *
573 573 * The partitioning rules for networking are as follows:
574 574 * 1) Packets coming from a zone must have a source address belonging to that
575 575 * zone.
576 576 * 2) Packets coming from a zone can only be sent on a physical interface on
577 577 * which the zone has an IP address.
578 578 * 3) Between two zones on the same machine, packet delivery is only allowed if
579 579 * there's a matching route for the destination and zone in the forwarding
580 580 * table.
581 581 * 4) The TCP and UDP port spaces are per-zone; that is, two processes in
582 582 * different zones can bind to the same port with the wildcard address
583 583 * (INADDR_ANY).
584 584 *
585 585 * The granularity of interface partitioning is at the logical interface level.
586 586 * Therefore, every zone has its own IP addresses, and incoming packets can be
587 587 * attributed to a zone unambiguously. A logical interface is placed into a zone
588 588 * using the SIOCSLIFZONE ioctl; this sets the ipif_zoneid field in the ipif_t
589 589 * structure. Rule (1) is implemented by modifying the source address selection
590 590 * algorithm so that the list of eligible addresses is filtered based on the
591 591 * sending process zone.
592 592 *
593 593 * The Internet Routing Entries (IREs) are either exclusive to a zone or shared
594 594 * across all zones, depending on their type. Here is the break-up:
595 595 *
596 596 * IRE type Shared/exclusive
597 597 * -------- ----------------
598 598 * IRE_BROADCAST Exclusive
599 599 * IRE_DEFAULT (default routes) Shared (*)
600 600 * IRE_LOCAL Exclusive (x)
601 601 * IRE_LOOPBACK Exclusive
602 602 * IRE_PREFIX (net routes) Shared (*)
603 603 * IRE_IF_NORESOLVER (interface routes) Exclusive
604 604 * IRE_IF_RESOLVER (interface routes) Exclusive
605 605 * IRE_IF_CLONE (interface routes) Exclusive
606 606 * IRE_HOST (host routes) Shared (*)
607 607 *
608 608 * (*) A zone can only use a default or off-subnet route if the gateway is
609 609 * directly reachable from the zone, that is, if the gateway's address matches
610 610 * one of the zone's logical interfaces.
611 611 *
612 612 * (x) IRE_LOCAL are handled a bit differently.
613 613 * When ip_restrict_interzone_loopback is set (the default),
614 614 * ire_route_recursive restricts loopback using an IRE_LOCAL
615 615 * between zone to the case when L2 would have conceptually looped the packet
616 616 * back, i.e. the loopback which is required since neither Ethernet drivers
617 617 * nor Ethernet hardware loops them back. This is the case when the normal
618 618 * routes (ignoring IREs with different zoneids) would send out the packet on
619 619 * the same ill as the ill with which is IRE_LOCAL is associated.
620 620 *
621 621 * Multiple zones can share a common broadcast address; typically all zones
622 622 * share the 255.255.255.255 address. Incoming as well as locally originated
623 623 * broadcast packets must be dispatched to all the zones on the broadcast
624 624 * network. For directed broadcasts (e.g. 10.16.72.255) this is not trivial
625 625 * since some zones may not be on the 10.16.72/24 network. To handle this, each
626 626 * zone has its own set of IRE_BROADCAST entries; then, broadcast packets are
627 627 * sent to every zone that has an IRE_BROADCAST entry for the destination
628 628 * address on the input ill, see ip_input_broadcast().
629 629 *
630 630 * Applications in different zones can join the same multicast group address.
631 631 * The same logic applies for multicast as for broadcast. ip_input_multicast
632 632 * dispatches packets to all zones that have members on the physical interface.
633 633 */
634 634
635 635 /*
636 636 * Squeue Fanout flags:
637 637 * 0: No fanout.
638 638 * 1: Fanout across all squeues
639 639 */
640 640 boolean_t ip_squeue_fanout = 0;
641 641
642 642 /*
643 643 * Maximum dups allowed per packet.
644 644 */
645 645 uint_t ip_max_frag_dups = 10;
646 646
647 647 static int ip_open(queue_t *q, dev_t *devp, int flag, int sflag,
648 648 cred_t *credp, boolean_t isv6);
649 649 static mblk_t *ip_xmit_attach_llhdr(mblk_t *, nce_t *);
650 650
651 651 static boolean_t icmp_inbound_verify_v4(mblk_t *, icmph_t *, ip_recv_attr_t *);
652 652 static void icmp_inbound_too_big_v4(icmph_t *, ip_recv_attr_t *);
653 653 static void icmp_inbound_error_fanout_v4(mblk_t *, icmph_t *,
654 654 ip_recv_attr_t *);
655 655 static void icmp_options_update(ipha_t *);
656 656 static void icmp_param_problem(mblk_t *, uint8_t, ip_recv_attr_t *);
657 657 static void icmp_pkt(mblk_t *, void *, size_t, ip_recv_attr_t *);
658 658 static mblk_t *icmp_pkt_err_ok(mblk_t *, ip_recv_attr_t *);
659 659 static void icmp_redirect_v4(mblk_t *mp, ipha_t *, icmph_t *,
660 660 ip_recv_attr_t *);
661 661 static void icmp_send_redirect(mblk_t *, ipaddr_t, ip_recv_attr_t *);
662 662 static void icmp_send_reply_v4(mblk_t *, ipha_t *, icmph_t *,
663 663 ip_recv_attr_t *);
664 664
665 665 mblk_t *ip_dlpi_alloc(size_t, t_uscalar_t);
666 666 char *ip_dot_addr(ipaddr_t, char *);
667 667 mblk_t *ip_carve_mp(mblk_t **, ssize_t);
668 668 int ip_close(queue_t *, int);
669 669 static char *ip_dot_saddr(uchar_t *, char *);
670 670 static void ip_lrput(queue_t *, mblk_t *);
671 671 ipaddr_t ip_net_mask(ipaddr_t);
672 672 char *ip_nv_lookup(nv_t *, int);
673 673 void ip_rput(queue_t *, mblk_t *);
674 674 static void ip_rput_dlpi_writer(ipsq_t *dummy_sq, queue_t *q, mblk_t *mp,
675 675 void *dummy_arg);
676 676 int ip_snmp_get(queue_t *, mblk_t *, int, boolean_t);
677 677 static mblk_t *ip_snmp_get_mib2_ip(queue_t *, mblk_t *,
678 678 mib2_ipIfStatsEntry_t *, ip_stack_t *, boolean_t);
679 679 static mblk_t *ip_snmp_get_mib2_ip_traffic_stats(queue_t *, mblk_t *,
680 680 ip_stack_t *, boolean_t);
681 681 static mblk_t *ip_snmp_get_mib2_ip6(queue_t *, mblk_t *, ip_stack_t *,
682 682 boolean_t);
683 683 static mblk_t *ip_snmp_get_mib2_icmp(queue_t *, mblk_t *, ip_stack_t *ipst);
684 684 static mblk_t *ip_snmp_get_mib2_icmp6(queue_t *, mblk_t *, ip_stack_t *ipst);
685 685 static mblk_t *ip_snmp_get_mib2_igmp(queue_t *, mblk_t *, ip_stack_t *ipst);
686 686 static mblk_t *ip_snmp_get_mib2_multi(queue_t *, mblk_t *, ip_stack_t *ipst);
687 687 static mblk_t *ip_snmp_get_mib2_ip_addr(queue_t *, mblk_t *,
688 688 ip_stack_t *ipst, boolean_t);
689 689 static mblk_t *ip_snmp_get_mib2_ip6_addr(queue_t *, mblk_t *,
690 690 ip_stack_t *ipst, boolean_t);
691 691 static mblk_t *ip_snmp_get_mib2_ip_group_src(queue_t *, mblk_t *,
692 692 ip_stack_t *ipst);
693 693 static mblk_t *ip_snmp_get_mib2_ip6_group_src(queue_t *, mblk_t *,
694 694 ip_stack_t *ipst);
695 695 static mblk_t *ip_snmp_get_mib2_ip_group_mem(queue_t *, mblk_t *,
696 696 ip_stack_t *ipst);
697 697 static mblk_t *ip_snmp_get_mib2_ip6_group_mem(queue_t *, mblk_t *,
698 698 ip_stack_t *ipst);
699 699 static mblk_t *ip_snmp_get_mib2_virt_multi(queue_t *, mblk_t *,
700 700 ip_stack_t *ipst);
701 701 static mblk_t *ip_snmp_get_mib2_multi_rtable(queue_t *, mblk_t *,
702 702 ip_stack_t *ipst);
703 703 static mblk_t *ip_snmp_get_mib2_ip_route_media(queue_t *, mblk_t *, int,
704 704 ip_stack_t *ipst);
705 705 static mblk_t *ip_snmp_get_mib2_ip6_route_media(queue_t *, mblk_t *, int,
706 706 ip_stack_t *ipst);
707 707 static void ip_snmp_get2_v4(ire_t *, iproutedata_t *);
708 708 static void ip_snmp_get2_v6_route(ire_t *, iproutedata_t *);
709 709 static int ip_snmp_get2_v4_media(ncec_t *, iproutedata_t *);
710 710 static int ip_snmp_get2_v6_media(ncec_t *, iproutedata_t *);
711 711 int ip_snmp_set(queue_t *, int, int, uchar_t *, int);
712 712
713 713 static mblk_t *ip_fragment_copyhdr(uchar_t *, int, int, ip_stack_t *,
714 714 mblk_t *);
715 715
716 716 static void conn_drain_init(ip_stack_t *);
717 717 static void conn_drain_fini(ip_stack_t *);
718 718 static void conn_drain(conn_t *connp, boolean_t closing);
719 719
720 720 static void conn_walk_drain(ip_stack_t *, idl_tx_list_t *);
721 721 static void conn_walk_sctp(pfv_t, void *, zoneid_t, netstack_t *);
722 722
723 723 static void *ip_stack_init(netstackid_t stackid, netstack_t *ns);
724 724 static void ip_stack_shutdown(netstackid_t stackid, void *arg);
725 725 static void ip_stack_fini(netstackid_t stackid, void *arg);
726 726
727 727 static int ip_multirt_apply_membership(int (*fn)(conn_t *, boolean_t,
728 728 const in6_addr_t *, ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *),
729 729 ire_t *, conn_t *, boolean_t, const in6_addr_t *, mcast_record_t,
730 730 const in6_addr_t *);
731 731
732 732 static int ip_squeue_switch(int);
733 733
734 734 static void *ip_kstat_init(netstackid_t, ip_stack_t *);
735 735 static void ip_kstat_fini(netstackid_t, kstat_t *);
736 736 static int ip_kstat_update(kstat_t *kp, int rw);
737 737 static void *icmp_kstat_init(netstackid_t);
738 738 static void icmp_kstat_fini(netstackid_t, kstat_t *);
739 739 static int icmp_kstat_update(kstat_t *kp, int rw);
740 740 static void *ip_kstat2_init(netstackid_t, ip_stat_t *);
741 741 static void ip_kstat2_fini(netstackid_t, kstat_t *);
742 742
743 743 static void ipobs_init(ip_stack_t *);
744 744 static void ipobs_fini(ip_stack_t *);
745 745
746 746 static int ip_tp_cpu_update(cpu_setup_t, int, void *);
747 747
748 748 ipaddr_t ip_g_all_ones = IP_HOST_MASK;
749 749
750 750 static long ip_rput_pullups;
751 751 int dohwcksum = 1; /* use h/w cksum if supported by the hardware */
752 752
753 753 vmem_t *ip_minor_arena_sa; /* for minor nos. from INET_MIN_DEV+2 thru 2^^18-1 */
754 754 vmem_t *ip_minor_arena_la; /* for minor nos. from 2^^18 thru 2^^32-1 */
755 755
756 756 int ip_debug;
757 757
758 758 /*
759 759 * Multirouting/CGTP stuff
760 760 */
761 761 int ip_cgtp_filter_rev = CGTP_FILTER_REV; /* CGTP hooks version */
762 762
763 763 /*
764 764 * IP tunables related declarations. Definitions are in ip_tunables.c
765 765 */
766 766 extern mod_prop_info_t ip_propinfo_tbl[];
767 767 extern int ip_propinfo_count;
768 768
769 769 /*
770 770 * Table of IP ioctls encoding the various properties of the ioctl and
771 771 * indexed based on the last byte of the ioctl command. Occasionally there
772 772 * is a clash, and there is more than 1 ioctl with the same last byte.
773 773 * In such a case 1 ioctl is encoded in the ndx table and the remaining
774 774 * ioctls are encoded in the misc table. An entry in the ndx table is
775 775 * retrieved by indexing on the last byte of the ioctl command and comparing
776 776 * the ioctl command with the value in the ndx table. In the event of a
777 777 * mismatch the misc table is then searched sequentially for the desired
778 778 * ioctl command.
779 779 *
780 780 * Entry: <command> <copyin_size> <flags> <cmd_type> <function> <restart_func>
781 781 */
782 782 ip_ioctl_cmd_t ip_ndx_ioctl_table[] = {
783 783 /* 000 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
784 784 /* 001 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
785 785 /* 002 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
786 786 /* 003 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
787 787 /* 004 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
788 788 /* 005 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
789 789 /* 006 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
790 790 /* 007 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
791 791 /* 008 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
792 792 /* 009 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
793 793
794 794 /* 010 */ { SIOCADDRT, sizeof (struct rtentry), IPI_PRIV,
795 795 MISC_CMD, ip_siocaddrt, NULL },
796 796 /* 011 */ { SIOCDELRT, sizeof (struct rtentry), IPI_PRIV,
797 797 MISC_CMD, ip_siocdelrt, NULL },
798 798
799 799 /* 012 */ { SIOCSIFADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
800 800 IF_CMD, ip_sioctl_addr, ip_sioctl_addr_restart },
801 801 /* 013 */ { SIOCGIFADDR, sizeof (struct ifreq), IPI_GET_CMD,
802 802 IF_CMD, ip_sioctl_get_addr, NULL },
803 803
804 804 /* 014 */ { SIOCSIFDSTADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
805 805 IF_CMD, ip_sioctl_dstaddr, ip_sioctl_dstaddr_restart },
806 806 /* 015 */ { SIOCGIFDSTADDR, sizeof (struct ifreq),
807 807 IPI_GET_CMD, IF_CMD, ip_sioctl_get_dstaddr, NULL },
808 808
809 809 /* 016 */ { SIOCSIFFLAGS, sizeof (struct ifreq),
810 810 IPI_PRIV | IPI_WR,
811 811 IF_CMD, ip_sioctl_flags, ip_sioctl_flags_restart },
812 812 /* 017 */ { SIOCGIFFLAGS, sizeof (struct ifreq),
813 813 IPI_MODOK | IPI_GET_CMD,
814 814 IF_CMD, ip_sioctl_get_flags, NULL },
815 815
816 816 /* 018 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
817 817 /* 019 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
818 818
819 819 /* copyin size cannot be coded for SIOCGIFCONF */
820 820 /* 020 */ { O_SIOCGIFCONF, 0, IPI_GET_CMD,
821 821 MISC_CMD, ip_sioctl_get_ifconf, NULL },
822 822
823 823 /* 021 */ { SIOCSIFMTU, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
824 824 IF_CMD, ip_sioctl_mtu, NULL },
825 825 /* 022 */ { SIOCGIFMTU, sizeof (struct ifreq), IPI_GET_CMD,
826 826 IF_CMD, ip_sioctl_get_mtu, NULL },
827 827 /* 023 */ { SIOCGIFBRDADDR, sizeof (struct ifreq),
828 828 IPI_GET_CMD, IF_CMD, ip_sioctl_get_brdaddr, NULL },
829 829 /* 024 */ { SIOCSIFBRDADDR, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
830 830 IF_CMD, ip_sioctl_brdaddr, NULL },
831 831 /* 025 */ { SIOCGIFNETMASK, sizeof (struct ifreq),
832 832 IPI_GET_CMD, IF_CMD, ip_sioctl_get_netmask, NULL },
833 833 /* 026 */ { SIOCSIFNETMASK, sizeof (struct ifreq), IPI_PRIV | IPI_WR,
834 834 IF_CMD, ip_sioctl_netmask, ip_sioctl_netmask_restart },
835 835 /* 027 */ { SIOCGIFMETRIC, sizeof (struct ifreq),
836 836 IPI_GET_CMD, IF_CMD, ip_sioctl_get_metric, NULL },
837 837 /* 028 */ { SIOCSIFMETRIC, sizeof (struct ifreq), IPI_PRIV,
838 838 IF_CMD, ip_sioctl_metric, NULL },
839 839 /* 029 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
840 840
841 841 /* See 166-168 below for extended SIOC*XARP ioctls */
842 842 /* 030 */ { SIOCSARP, sizeof (struct arpreq), IPI_PRIV | IPI_WR,
843 843 ARP_CMD, ip_sioctl_arp, NULL },
844 844 /* 031 */ { SIOCGARP, sizeof (struct arpreq), IPI_GET_CMD,
845 845 ARP_CMD, ip_sioctl_arp, NULL },
846 846 /* 032 */ { SIOCDARP, sizeof (struct arpreq), IPI_PRIV | IPI_WR,
847 847 ARP_CMD, ip_sioctl_arp, NULL },
848 848
849 849 /* 033 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
850 850 /* 034 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
851 851 /* 035 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
852 852 /* 036 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
853 853 /* 037 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
854 854 /* 038 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
855 855 /* 039 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
856 856 /* 040 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
857 857 /* 041 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
858 858 /* 042 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
859 859 /* 043 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
860 860 /* 044 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
861 861 /* 045 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
862 862 /* 046 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
863 863 /* 047 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
864 864 /* 048 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
865 865 /* 049 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
866 866 /* 050 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
867 867 /* 051 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
868 868 /* 052 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
869 869 /* 053 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
870 870
871 871 /* 054 */ { IF_UNITSEL, sizeof (int), IPI_PRIV | IPI_WR | IPI_MODOK,
872 872 MISC_CMD, if_unitsel, if_unitsel_restart },
873 873
874 874 /* 055 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
875 875 /* 056 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
876 876 /* 057 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
877 877 /* 058 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
878 878 /* 059 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
879 879 /* 060 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
880 880 /* 061 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
881 881 /* 062 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
882 882 /* 063 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
883 883 /* 064 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
884 884 /* 065 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
885 885 /* 066 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
886 886 /* 067 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
887 887 /* 068 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
888 888 /* 069 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
889 889 /* 070 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
890 890 /* 071 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
891 891 /* 072 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
892 892
893 893 /* 073 */ { SIOCSIFNAME, sizeof (struct ifreq),
894 894 IPI_PRIV | IPI_WR | IPI_MODOK,
895 895 IF_CMD, ip_sioctl_sifname, NULL },
896 896
897 897 /* 074 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
898 898 /* 075 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
899 899 /* 076 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
900 900 /* 077 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
901 901 /* 078 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
902 902 /* 079 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
903 903 /* 080 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
904 904 /* 081 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
905 905 /* 082 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
906 906 /* 083 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
907 907 /* 084 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
908 908 /* 085 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
909 909 /* 086 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
910 910
911 911 /* 087 */ { SIOCGIFNUM, sizeof (int), IPI_GET_CMD,
912 912 MISC_CMD, ip_sioctl_get_ifnum, NULL },
913 913 /* 088 */ { SIOCGIFMUXID, sizeof (struct ifreq), IPI_GET_CMD,
914 914 IF_CMD, ip_sioctl_get_muxid, NULL },
915 915 /* 089 */ { SIOCSIFMUXID, sizeof (struct ifreq),
916 916 IPI_PRIV | IPI_WR, IF_CMD, ip_sioctl_muxid, NULL },
917 917
918 918 /* Both if and lif variants share same func */
919 919 /* 090 */ { SIOCGIFINDEX, sizeof (struct ifreq), IPI_GET_CMD,
920 920 IF_CMD, ip_sioctl_get_lifindex, NULL },
921 921 /* Both if and lif variants share same func */
922 922 /* 091 */ { SIOCSIFINDEX, sizeof (struct ifreq),
923 923 IPI_PRIV | IPI_WR, IF_CMD, ip_sioctl_slifindex, NULL },
924 924
925 925 /* copyin size cannot be coded for SIOCGIFCONF */
926 926 /* 092 */ { SIOCGIFCONF, 0, IPI_GET_CMD,
927 927 MISC_CMD, ip_sioctl_get_ifconf, NULL },
928 928 /* 093 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
929 929 /* 094 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
930 930 /* 095 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
931 931 /* 096 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
932 932 /* 097 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
933 933 /* 098 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
934 934 /* 099 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
935 935 /* 100 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
936 936 /* 101 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
937 937 /* 102 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
938 938 /* 103 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
939 939 /* 104 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
940 940 /* 105 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
941 941 /* 106 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
942 942 /* 107 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
943 943 /* 108 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
944 944 /* 109 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
945 945
946 946 /* 110 */ { SIOCLIFREMOVEIF, sizeof (struct lifreq),
947 947 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_removeif,
948 948 ip_sioctl_removeif_restart },
949 949 /* 111 */ { SIOCLIFADDIF, sizeof (struct lifreq),
950 950 IPI_GET_CMD | IPI_PRIV | IPI_WR,
951 951 LIF_CMD, ip_sioctl_addif, NULL },
952 952 #define SIOCLIFADDR_NDX 112
953 953 /* 112 */ { SIOCSLIFADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
954 954 LIF_CMD, ip_sioctl_addr, ip_sioctl_addr_restart },
955 955 /* 113 */ { SIOCGLIFADDR, sizeof (struct lifreq),
956 956 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_addr, NULL },
957 957 /* 114 */ { SIOCSLIFDSTADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
958 958 LIF_CMD, ip_sioctl_dstaddr, ip_sioctl_dstaddr_restart },
959 959 /* 115 */ { SIOCGLIFDSTADDR, sizeof (struct lifreq),
960 960 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_dstaddr, NULL },
961 961 /* 116 */ { SIOCSLIFFLAGS, sizeof (struct lifreq),
962 962 IPI_PRIV | IPI_WR,
963 963 LIF_CMD, ip_sioctl_flags, ip_sioctl_flags_restart },
964 964 /* 117 */ { SIOCGLIFFLAGS, sizeof (struct lifreq),
965 965 IPI_GET_CMD | IPI_MODOK,
966 966 LIF_CMD, ip_sioctl_get_flags, NULL },
967 967
968 968 /* 118 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
969 969 /* 119 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
970 970
971 971 /* 120 */ { O_SIOCGLIFCONF, 0, IPI_GET_CMD, MISC_CMD,
972 972 ip_sioctl_get_lifconf, NULL },
973 973 /* 121 */ { SIOCSLIFMTU, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
974 974 LIF_CMD, ip_sioctl_mtu, NULL },
975 975 /* 122 */ { SIOCGLIFMTU, sizeof (struct lifreq), IPI_GET_CMD,
976 976 LIF_CMD, ip_sioctl_get_mtu, NULL },
977 977 /* 123 */ { SIOCGLIFBRDADDR, sizeof (struct lifreq),
978 978 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_brdaddr, NULL },
979 979 /* 124 */ { SIOCSLIFBRDADDR, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
980 980 LIF_CMD, ip_sioctl_brdaddr, NULL },
981 981 /* 125 */ { SIOCGLIFNETMASK, sizeof (struct lifreq),
982 982 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_netmask, NULL },
983 983 /* 126 */ { SIOCSLIFNETMASK, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
984 984 LIF_CMD, ip_sioctl_netmask, ip_sioctl_netmask_restart },
985 985 /* 127 */ { SIOCGLIFMETRIC, sizeof (struct lifreq),
986 986 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_metric, NULL },
987 987 /* 128 */ { SIOCSLIFMETRIC, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
988 988 LIF_CMD, ip_sioctl_metric, NULL },
989 989 /* 129 */ { SIOCSLIFNAME, sizeof (struct lifreq),
990 990 IPI_PRIV | IPI_WR | IPI_MODOK,
991 991 LIF_CMD, ip_sioctl_slifname,
992 992 ip_sioctl_slifname_restart },
993 993
994 994 /* 130 */ { SIOCGLIFNUM, sizeof (struct lifnum), IPI_GET_CMD,
995 995 MISC_CMD, ip_sioctl_get_lifnum, NULL },
996 996 /* 131 */ { SIOCGLIFMUXID, sizeof (struct lifreq),
997 997 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_muxid, NULL },
998 998 /* 132 */ { SIOCSLIFMUXID, sizeof (struct lifreq),
999 999 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_muxid, NULL },
1000 1000 /* 133 */ { SIOCGLIFINDEX, sizeof (struct lifreq),
1001 1001 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lifindex, 0 },
1002 1002 /* 134 */ { SIOCSLIFINDEX, sizeof (struct lifreq),
1003 1003 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_slifindex, 0 },
1004 1004 /* 135 */ { SIOCSLIFTOKEN, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1005 1005 LIF_CMD, ip_sioctl_token, NULL },
1006 1006 /* 136 */ { SIOCGLIFTOKEN, sizeof (struct lifreq),
1007 1007 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_token, NULL },
1008 1008 /* 137 */ { SIOCSLIFSUBNET, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1009 1009 LIF_CMD, ip_sioctl_subnet, ip_sioctl_subnet_restart },
1010 1010 /* 138 */ { SIOCGLIFSUBNET, sizeof (struct lifreq),
1011 1011 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_subnet, NULL },
1012 1012 /* 139 */ { SIOCSLIFLNKINFO, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1013 1013 LIF_CMD, ip_sioctl_lnkinfo, NULL },
1014 1014
1015 1015 /* 140 */ { SIOCGLIFLNKINFO, sizeof (struct lifreq),
1016 1016 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lnkinfo, NULL },
1017 1017 /* 141 */ { SIOCLIFDELND, sizeof (struct lifreq), IPI_PRIV,
1018 1018 LIF_CMD, ip_siocdelndp_v6, NULL },
1019 1019 /* 142 */ { SIOCLIFGETND, sizeof (struct lifreq), IPI_GET_CMD,
1020 1020 LIF_CMD, ip_siocqueryndp_v6, NULL },
1021 1021 /* 143 */ { SIOCLIFSETND, sizeof (struct lifreq), IPI_PRIV,
1022 1022 LIF_CMD, ip_siocsetndp_v6, NULL },
1023 1023 /* 144 */ { SIOCTMYADDR, sizeof (struct sioc_addrreq), IPI_GET_CMD,
1024 1024 MISC_CMD, ip_sioctl_tmyaddr, NULL },
1025 1025 /* 145 */ { SIOCTONLINK, sizeof (struct sioc_addrreq), IPI_GET_CMD,
1026 1026 MISC_CMD, ip_sioctl_tonlink, NULL },
1027 1027 /* 146 */ { SIOCTMYSITE, sizeof (struct sioc_addrreq), 0,
1028 1028 MISC_CMD, ip_sioctl_tmysite, NULL },
1029 1029 /* 147 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1030 1030 /* 148 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1031 1031
1032 1032 /* Old *IPSECONFIG ioctls are now deprecated, now see spdsock.c */
1033 1033 /* 149 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1034 1034 /* 150 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1035 1035 /* 151 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1036 1036 /* 152 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1037 1037
1038 1038 /* 153 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1039 1039
1040 1040 /* 154 */ { SIOCGLIFBINDING, sizeof (struct lifreq), IPI_GET_CMD,
1041 1041 LIF_CMD, ip_sioctl_get_binding, NULL },
1042 1042 /* 155 */ { SIOCSLIFGROUPNAME, sizeof (struct lifreq),
1043 1043 IPI_PRIV | IPI_WR,
1044 1044 LIF_CMD, ip_sioctl_groupname, ip_sioctl_groupname },
1045 1045 /* 156 */ { SIOCGLIFGROUPNAME, sizeof (struct lifreq),
1046 1046 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_groupname, NULL },
1047 1047 /* 157 */ { SIOCGLIFGROUPINFO, sizeof (lifgroupinfo_t),
1048 1048 IPI_GET_CMD, MISC_CMD, ip_sioctl_groupinfo, NULL },
1049 1049
1050 1050 /* Leave 158-160 unused; used to be SIOC*IFARP ioctls */
1051 1051 /* 158 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1052 1052 /* 159 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1053 1053 /* 160 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1054 1054
1055 1055 /* 161 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1056 1056
1057 1057 /* These are handled in ip_sioctl_copyin_setup itself */
1058 1058 /* 162 */ { SIOCGIP6ADDRPOLICY, 0, IPI_NULL_BCONT,
1059 1059 MISC_CMD, NULL, NULL },
1060 1060 /* 163 */ { SIOCSIP6ADDRPOLICY, 0, IPI_PRIV | IPI_NULL_BCONT,
1061 1061 MISC_CMD, NULL, NULL },
1062 1062 /* 164 */ { SIOCGDSTINFO, 0, IPI_GET_CMD, MISC_CMD, NULL, NULL },
1063 1063
1064 1064 /* 165 */ { SIOCGLIFCONF, 0, IPI_GET_CMD, MISC_CMD,
1065 1065 ip_sioctl_get_lifconf, NULL },
1066 1066
1067 1067 /* 166 */ { SIOCSXARP, sizeof (struct xarpreq), IPI_PRIV | IPI_WR,
1068 1068 XARP_CMD, ip_sioctl_arp, NULL },
1069 1069 /* 167 */ { SIOCGXARP, sizeof (struct xarpreq), IPI_GET_CMD,
1070 1070 XARP_CMD, ip_sioctl_arp, NULL },
1071 1071 /* 168 */ { SIOCDXARP, sizeof (struct xarpreq), IPI_PRIV | IPI_WR,
1072 1072 XARP_CMD, ip_sioctl_arp, NULL },
1073 1073
1074 1074 /* SIOCPOPSOCKFS is not handled by IP */
1075 1075 /* 169 */ { IPI_DONTCARE /* SIOCPOPSOCKFS */, 0, 0, 0, NULL, NULL },
1076 1076
1077 1077 /* 170 */ { SIOCGLIFZONE, sizeof (struct lifreq),
1078 1078 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_lifzone, NULL },
1079 1079 /* 171 */ { SIOCSLIFZONE, sizeof (struct lifreq),
1080 1080 IPI_PRIV | IPI_WR, LIF_CMD, ip_sioctl_slifzone,
1081 1081 ip_sioctl_slifzone_restart },
1082 1082 /* 172-174 are SCTP ioctls and not handled by IP */
1083 1083 /* 172 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1084 1084 /* 173 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1085 1085 /* 174 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1086 1086 /* 175 */ { SIOCGLIFUSESRC, sizeof (struct lifreq),
1087 1087 IPI_GET_CMD, LIF_CMD,
1088 1088 ip_sioctl_get_lifusesrc, 0 },
1089 1089 /* 176 */ { SIOCSLIFUSESRC, sizeof (struct lifreq),
1090 1090 IPI_PRIV | IPI_WR,
1091 1091 LIF_CMD, ip_sioctl_slifusesrc,
1092 1092 NULL },
1093 1093 /* 177 */ { SIOCGLIFSRCOF, 0, IPI_GET_CMD, MISC_CMD,
1094 1094 ip_sioctl_get_lifsrcof, NULL },
1095 1095 /* 178 */ { SIOCGMSFILTER, sizeof (struct group_filter), IPI_GET_CMD,
1096 1096 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1097 1097 /* 179 */ { SIOCSMSFILTER, sizeof (struct group_filter), 0,
1098 1098 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1099 1099 /* 180 */ { SIOCGIPMSFILTER, sizeof (struct ip_msfilter), IPI_GET_CMD,
1100 1100 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1101 1101 /* 181 */ { SIOCSIPMSFILTER, sizeof (struct ip_msfilter), 0,
1102 1102 MSFILT_CMD, ip_sioctl_msfilter, NULL },
1103 1103 /* 182 */ { IPI_DONTCARE, 0, 0, 0, NULL, NULL },
1104 1104 /* SIOCSENABLESDP is handled by SDP */
1105 1105 /* 183 */ { IPI_DONTCARE /* SIOCSENABLESDP */, 0, 0, 0, NULL, NULL },
1106 1106 /* 184 */ { IPI_DONTCARE /* SIOCSQPTR */, 0, 0, 0, NULL, NULL },
1107 1107 /* 185 */ { SIOCGIFHWADDR, sizeof (struct ifreq), IPI_GET_CMD,
1108 1108 IF_CMD, ip_sioctl_get_ifhwaddr, NULL },
1109 1109 /* 186 */ { IPI_DONTCARE /* SIOCGSTAMP */, 0, 0, 0, NULL, NULL },
1110 1110 /* 187 */ { SIOCILB, 0, IPI_PRIV | IPI_GET_CMD, MISC_CMD,
1111 1111 ip_sioctl_ilb_cmd, NULL },
1112 1112 /* 188 */ { SIOCGETPROP, 0, IPI_GET_CMD, 0, NULL, NULL },
1113 1113 /* 189 */ { SIOCSETPROP, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL},
1114 1114 /* 190 */ { SIOCGLIFDADSTATE, sizeof (struct lifreq),
1115 1115 IPI_GET_CMD, LIF_CMD, ip_sioctl_get_dadstate, NULL },
1116 1116 /* 191 */ { SIOCSLIFPREFIX, sizeof (struct lifreq), IPI_PRIV | IPI_WR,
1117 1117 LIF_CMD, ip_sioctl_prefix, ip_sioctl_prefix_restart },
1118 1118 /* 192 */ { SIOCGLIFHWADDR, sizeof (struct lifreq), IPI_GET_CMD,
1119 1119 LIF_CMD, ip_sioctl_get_lifhwaddr, NULL }
1120 1120 };
1121 1121
1122 1122 int ip_ndx_ioctl_count = sizeof (ip_ndx_ioctl_table) / sizeof (ip_ioctl_cmd_t);
1123 1123
1124 1124 ip_ioctl_cmd_t ip_misc_ioctl_table[] = {
1125 1125 { I_LINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1126 1126 { I_UNLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1127 1127 { I_PLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1128 1128 { I_PUNLINK, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1129 1129 { ND_GET, 0, 0, 0, NULL, NULL },
1130 1130 { ND_SET, 0, IPI_PRIV | IPI_WR, 0, NULL, NULL },
1131 1131 { IP_IOCTL, 0, 0, 0, NULL, NULL },
1132 1132 { SIOCGETVIFCNT, sizeof (struct sioc_vif_req), IPI_GET_CMD,
1133 1133 MISC_CMD, mrt_ioctl},
1134 1134 { SIOCGETSGCNT, sizeof (struct sioc_sg_req), IPI_GET_CMD,
1135 1135 MISC_CMD, mrt_ioctl},
1136 1136 { SIOCGETLSGCNT, sizeof (struct sioc_lsg_req), IPI_GET_CMD,
1137 1137 MISC_CMD, mrt_ioctl}
1138 1138 };
1139 1139
1140 1140 int ip_misc_ioctl_count =
1141 1141 sizeof (ip_misc_ioctl_table) / sizeof (ip_ioctl_cmd_t);
1142 1142
1143 1143 int conn_drain_nthreads; /* Number of drainers reqd. */
1144 1144 /* Settable in /etc/system */
1145 1145 /* Defined in ip_ire.c */
1146 1146 extern uint32_t ip_ire_max_bucket_cnt, ip6_ire_max_bucket_cnt;
1147 1147 extern uint32_t ip_ire_min_bucket_cnt, ip6_ire_min_bucket_cnt;
1148 1148 extern uint32_t ip_ire_mem_ratio, ip_ire_cpu_ratio;
1149 1149
1150 1150 static nv_t ire_nv_arr[] = {
1151 1151 { IRE_BROADCAST, "BROADCAST" },
1152 1152 { IRE_LOCAL, "LOCAL" },
1153 1153 { IRE_LOOPBACK, "LOOPBACK" },
1154 1154 { IRE_DEFAULT, "DEFAULT" },
1155 1155 { IRE_PREFIX, "PREFIX" },
1156 1156 { IRE_IF_NORESOLVER, "IF_NORESOL" },
1157 1157 { IRE_IF_RESOLVER, "IF_RESOLV" },
1158 1158 { IRE_IF_CLONE, "IF_CLONE" },
1159 1159 { IRE_HOST, "HOST" },
1160 1160 { IRE_MULTICAST, "MULTICAST" },
1161 1161 { IRE_NOROUTE, "NOROUTE" },
1162 1162 { 0 }
1163 1163 };
1164 1164
1165 1165 nv_t *ire_nv_tbl = ire_nv_arr;
1166 1166
1167 1167 /* Simple ICMP IP Header Template */
1168 1168 static ipha_t icmp_ipha = {
1169 1169 IP_SIMPLE_HDR_VERSION, 0, 0, 0, 0, 0, IPPROTO_ICMP
1170 1170 };
1171 1171
1172 1172 struct module_info ip_mod_info = {
1173 1173 IP_MOD_ID, IP_MOD_NAME, IP_MOD_MINPSZ, IP_MOD_MAXPSZ, IP_MOD_HIWAT,
1174 1174 IP_MOD_LOWAT
1175 1175 };
1176 1176
1177 1177 /*
1178 1178 * Duplicate static symbols within a module confuses mdb; so we avoid the
1179 1179 * problem by making the symbols here distinct from those in udp.c.
1180 1180 */
1181 1181
1182 1182 /*
1183 1183 * Entry points for IP as a device and as a module.
1184 1184 * We have separate open functions for the /dev/ip and /dev/ip6 devices.
1185 1185 */
1186 1186 static struct qinit iprinitv4 = {
1187 1187 (pfi_t)ip_rput, NULL, ip_openv4, ip_close, NULL,
1188 1188 &ip_mod_info
1189 1189 };
1190 1190
1191 1191 struct qinit iprinitv6 = {
1192 1192 (pfi_t)ip_rput_v6, NULL, ip_openv6, ip_close, NULL,
1193 1193 &ip_mod_info
1194 1194 };
1195 1195
1196 1196 static struct qinit ipwinit = {
1197 1197 (pfi_t)ip_wput_nondata, (pfi_t)ip_wsrv, NULL, NULL, NULL,
1198 1198 &ip_mod_info
1199 1199 };
1200 1200
1201 1201 static struct qinit iplrinit = {
1202 1202 (pfi_t)ip_lrput, NULL, ip_openv4, ip_close, NULL,
1203 1203 &ip_mod_info
1204 1204 };
1205 1205
1206 1206 static struct qinit iplwinit = {
1207 1207 (pfi_t)ip_lwput, NULL, NULL, NULL, NULL,
1208 1208 &ip_mod_info
1209 1209 };
1210 1210
1211 1211 /* For AF_INET aka /dev/ip */
1212 1212 struct streamtab ipinfov4 = {
1213 1213 &iprinitv4, &ipwinit, &iplrinit, &iplwinit
1214 1214 };
1215 1215
1216 1216 /* For AF_INET6 aka /dev/ip6 */
1217 1217 struct streamtab ipinfov6 = {
1218 1218 &iprinitv6, &ipwinit, &iplrinit, &iplwinit
1219 1219 };
1220 1220
1221 1221 #ifdef DEBUG
1222 1222 boolean_t skip_sctp_cksum = B_FALSE;
1223 1223 #endif
1224 1224
1225 1225 /*
1226 1226 * Generate an ICMP fragmentation needed message.
1227 1227 * When called from ip_output side a minimal ip_recv_attr_t needs to be
1228 1228 * constructed by the caller.
1229 1229 */
1230 1230 void
1231 1231 icmp_frag_needed(mblk_t *mp, int mtu, ip_recv_attr_t *ira)
1232 1232 {
1233 1233 icmph_t icmph;
1234 1234 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
1235 1235
1236 1236 mp = icmp_pkt_err_ok(mp, ira);
1237 1237 if (mp == NULL)
1238 1238 return;
1239 1239
1240 1240 bzero(&icmph, sizeof (icmph_t));
1241 1241 icmph.icmph_type = ICMP_DEST_UNREACHABLE;
1242 1242 icmph.icmph_code = ICMP_FRAGMENTATION_NEEDED;
1243 1243 icmph.icmph_du_mtu = htons((uint16_t)mtu);
1244 1244 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutFragNeeded);
1245 1245 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDestUnreachs);
1246 1246
1247 1247 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
1248 1248 }
1249 1249
1250 1250 /*
1251 1251 * icmp_inbound_v4 deals with ICMP messages that are handled by IP.
1252 1252 * If the ICMP message is consumed by IP, i.e., it should not be delivered
1253 1253 * to any IPPROTO_ICMP raw sockets, then it returns NULL.
1254 1254 * Likewise, if the ICMP error is misformed (too short, etc), then it
1255 1255 * returns NULL. The caller uses this to determine whether or not to send
1256 1256 * to raw sockets.
1257 1257 *
1258 1258 * All error messages are passed to the matching transport stream.
1259 1259 *
1260 1260 * The following cases are handled by icmp_inbound:
1261 1261 * 1) It needs to send a reply back and possibly delivering it
1262 1262 * to the "interested" upper clients.
1263 1263 * 2) Return the mblk so that the caller can pass it to the RAW socket clients.
1264 1264 * 3) It needs to change some values in IP only.
1265 1265 * 4) It needs to change some values in IP and upper layers e.g TCP
1266 1266 * by delivering an error to the upper layers.
1267 1267 *
1268 1268 * We handle the above three cases in the context of IPsec in the
1269 1269 * following way :
1270 1270 *
1271 1271 * 1) Send the reply back in the same way as the request came in.
1272 1272 * If it came in encrypted, it goes out encrypted. If it came in
1273 1273 * clear, it goes out in clear. Thus, this will prevent chosen
1274 1274 * plain text attack.
1275 1275 * 2) The client may or may not expect things to come in secure.
1276 1276 * If it comes in secure, the policy constraints are checked
1277 1277 * before delivering it to the upper layers. If it comes in
1278 1278 * clear, ipsec_inbound_accept_clear will decide whether to
1279 1279 * accept this in clear or not. In both the cases, if the returned
1280 1280 * message (IP header + 8 bytes) that caused the icmp message has
1281 1281 * AH/ESP headers, it is sent up to AH/ESP for validation before
1282 1282 * sending up. If there are only 8 bytes of returned message, then
1283 1283 * upper client will not be notified.
1284 1284 * 3) Check with global policy to see whether it matches the constaints.
1285 1285 * But this will be done only if icmp_accept_messages_in_clear is
1286 1286 * zero.
1287 1287 * 4) If we need to change both in IP and ULP, then the decision taken
1288 1288 * while affecting the values in IP and while delivering up to TCP
1289 1289 * should be the same.
1290 1290 *
1291 1291 * There are two cases.
1292 1292 *
1293 1293 * a) If we reject data at the IP layer (ipsec_check_global_policy()
1294 1294 * failed), we will not deliver it to the ULP, even though they
1295 1295 * are *willing* to accept in *clear*. This is fine as our global
1296 1296 * disposition to icmp messages asks us reject the datagram.
1297 1297 *
1298 1298 * b) If we accept data at the IP layer (ipsec_check_global_policy()
1299 1299 * succeeded or icmp_accept_messages_in_clear is 1), and not able
1300 1300 * to deliver it to ULP (policy failed), it can lead to
1301 1301 * consistency problems. The cases known at this time are
1302 1302 * ICMP_DESTINATION_UNREACHABLE messages with following code
1303 1303 * values :
1304 1304 *
1305 1305 * - ICMP_FRAGMENTATION_NEEDED : IP adapts to the new value
1306 1306 * and Upper layer rejects. Then the communication will
1307 1307 * come to a stop. This is solved by making similar decisions
1308 1308 * at both levels. Currently, when we are unable to deliver
1309 1309 * to the Upper Layer (due to policy failures) while IP has
1310 1310 * adjusted dce_pmtu, the next outbound datagram would
1311 1311 * generate a local ICMP_FRAGMENTATION_NEEDED message - which
1312 1312 * will be with the right level of protection. Thus the right
1313 1313 * value will be communicated even if we are not able to
1314 1314 * communicate when we get from the wire initially. But this
1315 1315 * assumes there would be at least one outbound datagram after
1316 1316 * IP has adjusted its dce_pmtu value. To make things
1317 1317 * simpler, we accept in clear after the validation of
1318 1318 * AH/ESP headers.
1319 1319 *
1320 1320 * - Other ICMP ERRORS : We may not be able to deliver it to the
1321 1321 * upper layer depending on the level of protection the upper
1322 1322 * layer expects and the disposition in ipsec_inbound_accept_clear().
1323 1323 * ipsec_inbound_accept_clear() decides whether a given ICMP error
1324 1324 * should be accepted in clear when the Upper layer expects secure.
1325 1325 * Thus the communication may get aborted by some bad ICMP
1326 1326 * packets.
1327 1327 */
1328 1328 mblk_t *
1329 1329 icmp_inbound_v4(mblk_t *mp, ip_recv_attr_t *ira)
1330 1330 {
1331 1331 icmph_t *icmph;
1332 1332 ipha_t *ipha; /* Outer header */
1333 1333 int ip_hdr_length; /* Outer header length */
1334 1334 boolean_t interested;
1335 1335 ipif_t *ipif;
1336 1336 uint32_t ts;
1337 1337 uint32_t *tsp;
1338 1338 timestruc_t now;
1339 1339 ill_t *ill = ira->ira_ill;
1340 1340 ip_stack_t *ipst = ill->ill_ipst;
1341 1341 zoneid_t zoneid = ira->ira_zoneid;
1342 1342 int len_needed;
1343 1343 mblk_t *mp_ret = NULL;
1344 1344
1345 1345 ipha = (ipha_t *)mp->b_rptr;
1346 1346
1347 1347 BUMP_MIB(&ipst->ips_icmp_mib, icmpInMsgs);
1348 1348
1349 1349 ip_hdr_length = ira->ira_ip_hdr_length;
1350 1350 if ((mp->b_wptr - mp->b_rptr) < (ip_hdr_length + ICMPH_SIZE)) {
1351 1351 if (ira->ira_pktlen < (ip_hdr_length + ICMPH_SIZE)) {
1352 1352 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
1353 1353 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
1354 1354 freemsg(mp);
1355 1355 return (NULL);
1356 1356 }
1357 1357 /* Last chance to get real. */
1358 1358 ipha = ip_pullup(mp, ip_hdr_length + ICMPH_SIZE, ira);
1359 1359 if (ipha == NULL) {
1360 1360 BUMP_MIB(&ipst->ips_icmp_mib, icmpInErrors);
1361 1361 freemsg(mp);
1362 1362 return (NULL);
1363 1363 }
1364 1364 }
1365 1365
1366 1366 /* The IP header will always be a multiple of four bytes */
1367 1367 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1368 1368 ip2dbg(("icmp_inbound_v4: type %d code %d\n", icmph->icmph_type,
1369 1369 icmph->icmph_code));
1370 1370
1371 1371 /*
1372 1372 * We will set "interested" to "true" if we should pass a copy to
1373 1373 * the transport or if we handle the packet locally.
1374 1374 */
1375 1375 interested = B_FALSE;
1376 1376 switch (icmph->icmph_type) {
1377 1377 case ICMP_ECHO_REPLY:
1378 1378 BUMP_MIB(&ipst->ips_icmp_mib, icmpInEchoReps);
1379 1379 break;
1380 1380 case ICMP_DEST_UNREACHABLE:
1381 1381 if (icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED)
1382 1382 BUMP_MIB(&ipst->ips_icmp_mib, icmpInFragNeeded);
1383 1383 interested = B_TRUE; /* Pass up to transport */
1384 1384 BUMP_MIB(&ipst->ips_icmp_mib, icmpInDestUnreachs);
1385 1385 break;
1386 1386 case ICMP_SOURCE_QUENCH:
1387 1387 interested = B_TRUE; /* Pass up to transport */
1388 1388 BUMP_MIB(&ipst->ips_icmp_mib, icmpInSrcQuenchs);
1389 1389 break;
1390 1390 case ICMP_REDIRECT:
1391 1391 if (!ipst->ips_ip_ignore_redirect)
1392 1392 interested = B_TRUE;
1393 1393 BUMP_MIB(&ipst->ips_icmp_mib, icmpInRedirects);
1394 1394 break;
1395 1395 case ICMP_ECHO_REQUEST:
1396 1396 /*
1397 1397 * Whether to respond to echo requests that come in as IP
1398 1398 * broadcasts or as IP multicast is subject to debate
1399 1399 * (what isn't?). We aim to please, you pick it.
1400 1400 * Default is do it.
1401 1401 */
1402 1402 if (ira->ira_flags & IRAF_MULTICAST) {
1403 1403 /* multicast: respond based on tunable */
1404 1404 interested = ipst->ips_ip_g_resp_to_echo_mcast;
1405 1405 } else if (ira->ira_flags & IRAF_BROADCAST) {
1406 1406 /* broadcast: respond based on tunable */
1407 1407 interested = ipst->ips_ip_g_resp_to_echo_bcast;
1408 1408 } else {
1409 1409 /* unicast: always respond */
1410 1410 interested = B_TRUE;
1411 1411 }
1412 1412 BUMP_MIB(&ipst->ips_icmp_mib, icmpInEchos);
1413 1413 if (!interested) {
1414 1414 /* We never pass these to RAW sockets */
1415 1415 freemsg(mp);
1416 1416 return (NULL);
1417 1417 }
1418 1418
1419 1419 /* Check db_ref to make sure we can modify the packet. */
1420 1420 if (mp->b_datap->db_ref > 1) {
1421 1421 mblk_t *mp1;
1422 1422
1423 1423 mp1 = copymsg(mp);
1424 1424 freemsg(mp);
1425 1425 if (!mp1) {
1426 1426 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1427 1427 return (NULL);
1428 1428 }
1429 1429 mp = mp1;
1430 1430 ipha = (ipha_t *)mp->b_rptr;
1431 1431 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1432 1432 }
1433 1433 icmph->icmph_type = ICMP_ECHO_REPLY;
1434 1434 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutEchoReps);
1435 1435 icmp_send_reply_v4(mp, ipha, icmph, ira);
1436 1436 return (NULL);
1437 1437
1438 1438 case ICMP_ROUTER_ADVERTISEMENT:
1439 1439 case ICMP_ROUTER_SOLICITATION:
1440 1440 break;
1441 1441 case ICMP_TIME_EXCEEDED:
1442 1442 interested = B_TRUE; /* Pass up to transport */
1443 1443 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimeExcds);
1444 1444 break;
1445 1445 case ICMP_PARAM_PROBLEM:
1446 1446 interested = B_TRUE; /* Pass up to transport */
1447 1447 BUMP_MIB(&ipst->ips_icmp_mib, icmpInParmProbs);
1448 1448 break;
1449 1449 case ICMP_TIME_STAMP_REQUEST:
1450 1450 /* Response to Time Stamp Requests is local policy. */
1451 1451 if (ipst->ips_ip_g_resp_to_timestamp) {
1452 1452 if (ira->ira_flags & IRAF_MULTIBROADCAST)
1453 1453 interested =
1454 1454 ipst->ips_ip_g_resp_to_timestamp_bcast;
1455 1455 else
1456 1456 interested = B_TRUE;
1457 1457 }
1458 1458 if (!interested) {
1459 1459 /* We never pass these to RAW sockets */
1460 1460 freemsg(mp);
1461 1461 return (NULL);
1462 1462 }
1463 1463
1464 1464 /* Make sure we have enough of the packet */
1465 1465 len_needed = ip_hdr_length + ICMPH_SIZE +
1466 1466 3 * sizeof (uint32_t);
1467 1467
1468 1468 if (mp->b_wptr - mp->b_rptr < len_needed) {
1469 1469 ipha = ip_pullup(mp, len_needed, ira);
1470 1470 if (ipha == NULL) {
1471 1471 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1472 1472 ip_drop_input("ipIfStatsInDiscards - ip_pullup",
1473 1473 mp, ill);
1474 1474 freemsg(mp);
1475 1475 return (NULL);
1476 1476 }
1477 1477 /* Refresh following the pullup. */
1478 1478 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1479 1479 }
1480 1480 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimestamps);
1481 1481 /* Check db_ref to make sure we can modify the packet. */
1482 1482 if (mp->b_datap->db_ref > 1) {
1483 1483 mblk_t *mp1;
1484 1484
1485 1485 mp1 = copymsg(mp);
1486 1486 freemsg(mp);
1487 1487 if (!mp1) {
1488 1488 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1489 1489 return (NULL);
1490 1490 }
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1491 1491 mp = mp1;
1492 1492 ipha = (ipha_t *)mp->b_rptr;
1493 1493 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1494 1494 }
1495 1495 icmph->icmph_type = ICMP_TIME_STAMP_REPLY;
1496 1496 tsp = (uint32_t *)&icmph[1];
1497 1497 tsp++; /* Skip past 'originate time' */
1498 1498 /* Compute # of milliseconds since midnight */
1499 1499 gethrestime(&now);
1500 1500 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
1501 - now.tv_nsec / (NANOSEC / MILLISEC);
1501 + NSEC2MSEC(now.tv_nsec);
1502 1502 *tsp++ = htonl(ts); /* Lay in 'receive time' */
1503 1503 *tsp++ = htonl(ts); /* Lay in 'send time' */
1504 1504 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutTimestampReps);
1505 1505 icmp_send_reply_v4(mp, ipha, icmph, ira);
1506 1506 return (NULL);
1507 1507
1508 1508 case ICMP_TIME_STAMP_REPLY:
1509 1509 BUMP_MIB(&ipst->ips_icmp_mib, icmpInTimestampReps);
1510 1510 break;
1511 1511 case ICMP_INFO_REQUEST:
1512 1512 /* Per RFC 1122 3.2.2.7, ignore this. */
1513 1513 case ICMP_INFO_REPLY:
1514 1514 break;
1515 1515 case ICMP_ADDRESS_MASK_REQUEST:
1516 1516 if (ira->ira_flags & IRAF_MULTIBROADCAST) {
1517 1517 interested =
1518 1518 ipst->ips_ip_respond_to_address_mask_broadcast;
1519 1519 } else {
1520 1520 interested = B_TRUE;
1521 1521 }
1522 1522 if (!interested) {
1523 1523 /* We never pass these to RAW sockets */
1524 1524 freemsg(mp);
1525 1525 return (NULL);
1526 1526 }
1527 1527 len_needed = ip_hdr_length + ICMPH_SIZE + IP_ADDR_LEN;
1528 1528 if (mp->b_wptr - mp->b_rptr < len_needed) {
1529 1529 ipha = ip_pullup(mp, len_needed, ira);
1530 1530 if (ipha == NULL) {
1531 1531 BUMP_MIB(ill->ill_ip_mib,
1532 1532 ipIfStatsInTruncatedPkts);
1533 1533 ip_drop_input("ipIfStatsInTruncatedPkts", mp,
1534 1534 ill);
1535 1535 freemsg(mp);
1536 1536 return (NULL);
1537 1537 }
1538 1538 /* Refresh following the pullup. */
1539 1539 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1540 1540 }
1541 1541 BUMP_MIB(&ipst->ips_icmp_mib, icmpInAddrMasks);
1542 1542 /* Check db_ref to make sure we can modify the packet. */
1543 1543 if (mp->b_datap->db_ref > 1) {
1544 1544 mblk_t *mp1;
1545 1545
1546 1546 mp1 = copymsg(mp);
1547 1547 freemsg(mp);
1548 1548 if (!mp1) {
1549 1549 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
1550 1550 return (NULL);
1551 1551 }
1552 1552 mp = mp1;
1553 1553 ipha = (ipha_t *)mp->b_rptr;
1554 1554 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1555 1555 }
1556 1556 /*
1557 1557 * Need the ipif with the mask be the same as the source
1558 1558 * address of the mask reply. For unicast we have a specific
1559 1559 * ipif. For multicast/broadcast we only handle onlink
1560 1560 * senders, and use the source address to pick an ipif.
1561 1561 */
1562 1562 ipif = ipif_lookup_addr(ipha->ipha_dst, ill, zoneid, ipst);
1563 1563 if (ipif == NULL) {
1564 1564 /* Broadcast or multicast */
1565 1565 ipif = ipif_lookup_remote(ill, ipha->ipha_src, zoneid);
1566 1566 if (ipif == NULL) {
1567 1567 freemsg(mp);
1568 1568 return (NULL);
1569 1569 }
1570 1570 }
1571 1571 icmph->icmph_type = ICMP_ADDRESS_MASK_REPLY;
1572 1572 bcopy(&ipif->ipif_net_mask, &icmph[1], IP_ADDR_LEN);
1573 1573 ipif_refrele(ipif);
1574 1574 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutAddrMaskReps);
1575 1575 icmp_send_reply_v4(mp, ipha, icmph, ira);
1576 1576 return (NULL);
1577 1577
1578 1578 case ICMP_ADDRESS_MASK_REPLY:
1579 1579 BUMP_MIB(&ipst->ips_icmp_mib, icmpInAddrMaskReps);
1580 1580 break;
1581 1581 default:
1582 1582 interested = B_TRUE; /* Pass up to transport */
1583 1583 BUMP_MIB(&ipst->ips_icmp_mib, icmpInUnknowns);
1584 1584 break;
1585 1585 }
1586 1586 /*
1587 1587 * See if there is an ICMP client to avoid an extra copymsg/freemsg
1588 1588 * if there isn't one.
1589 1589 */
1590 1590 if (ipst->ips_ipcl_proto_fanout_v4[IPPROTO_ICMP].connf_head != NULL) {
1591 1591 /* If there is an ICMP client and we want one too, copy it. */
1592 1592
1593 1593 if (!interested) {
1594 1594 /* Caller will deliver to RAW sockets */
1595 1595 return (mp);
1596 1596 }
1597 1597 mp_ret = copymsg(mp);
1598 1598 if (mp_ret == NULL) {
1599 1599 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1600 1600 ip_drop_input("ipIfStatsInDiscards - copymsg", mp, ill);
1601 1601 }
1602 1602 } else if (!interested) {
1603 1603 /* Neither we nor raw sockets are interested. Drop packet now */
1604 1604 freemsg(mp);
1605 1605 return (NULL);
1606 1606 }
1607 1607
1608 1608 /*
1609 1609 * ICMP error or redirect packet. Make sure we have enough of
1610 1610 * the header and that db_ref == 1 since we might end up modifying
1611 1611 * the packet.
1612 1612 */
1613 1613 if (mp->b_cont != NULL) {
1614 1614 if (ip_pullup(mp, -1, ira) == NULL) {
1615 1615 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1616 1616 ip_drop_input("ipIfStatsInDiscards - ip_pullup",
1617 1617 mp, ill);
1618 1618 freemsg(mp);
1619 1619 return (mp_ret);
1620 1620 }
1621 1621 }
1622 1622
1623 1623 if (mp->b_datap->db_ref > 1) {
1624 1624 mblk_t *mp1;
1625 1625
1626 1626 mp1 = copymsg(mp);
1627 1627 if (mp1 == NULL) {
1628 1628 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1629 1629 ip_drop_input("ipIfStatsInDiscards - copymsg", mp, ill);
1630 1630 freemsg(mp);
1631 1631 return (mp_ret);
1632 1632 }
1633 1633 freemsg(mp);
1634 1634 mp = mp1;
1635 1635 }
1636 1636
1637 1637 /*
1638 1638 * In case mp has changed, verify the message before any further
1639 1639 * processes.
1640 1640 */
1641 1641 ipha = (ipha_t *)mp->b_rptr;
1642 1642 icmph = (icmph_t *)&mp->b_rptr[ip_hdr_length];
1643 1643 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
1644 1644 freemsg(mp);
1645 1645 return (mp_ret);
1646 1646 }
1647 1647
1648 1648 switch (icmph->icmph_type) {
1649 1649 case ICMP_REDIRECT:
1650 1650 icmp_redirect_v4(mp, ipha, icmph, ira);
1651 1651 break;
1652 1652 case ICMP_DEST_UNREACHABLE:
1653 1653 if (icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED) {
1654 1654 /* Update DCE and adjust MTU is icmp header if needed */
1655 1655 icmp_inbound_too_big_v4(icmph, ira);
1656 1656 }
1657 1657 /* FALLTHRU */
1658 1658 default:
1659 1659 icmp_inbound_error_fanout_v4(mp, icmph, ira);
1660 1660 break;
1661 1661 }
1662 1662 return (mp_ret);
1663 1663 }
1664 1664
1665 1665 /*
1666 1666 * Send an ICMP echo, timestamp or address mask reply.
1667 1667 * The caller has already updated the payload part of the packet.
1668 1668 * We handle the ICMP checksum, IP source address selection and feed
1669 1669 * the packet into ip_output_simple.
1670 1670 */
1671 1671 static void
1672 1672 icmp_send_reply_v4(mblk_t *mp, ipha_t *ipha, icmph_t *icmph,
1673 1673 ip_recv_attr_t *ira)
1674 1674 {
1675 1675 uint_t ip_hdr_length = ira->ira_ip_hdr_length;
1676 1676 ill_t *ill = ira->ira_ill;
1677 1677 ip_stack_t *ipst = ill->ill_ipst;
1678 1678 ip_xmit_attr_t ixas;
1679 1679
1680 1680 /* Send out an ICMP packet */
1681 1681 icmph->icmph_checksum = 0;
1682 1682 icmph->icmph_checksum = IP_CSUM(mp, ip_hdr_length, 0);
1683 1683 /* Reset time to live. */
1684 1684 ipha->ipha_ttl = ipst->ips_ip_def_ttl;
1685 1685 {
1686 1686 /* Swap source and destination addresses */
1687 1687 ipaddr_t tmp;
1688 1688
1689 1689 tmp = ipha->ipha_src;
1690 1690 ipha->ipha_src = ipha->ipha_dst;
1691 1691 ipha->ipha_dst = tmp;
1692 1692 }
1693 1693 ipha->ipha_ident = 0;
1694 1694 if (!IS_SIMPLE_IPH(ipha))
1695 1695 icmp_options_update(ipha);
1696 1696
1697 1697 bzero(&ixas, sizeof (ixas));
1698 1698 ixas.ixa_flags = IXAF_BASIC_SIMPLE_V4;
1699 1699 ixas.ixa_zoneid = ira->ira_zoneid;
1700 1700 ixas.ixa_cred = kcred;
1701 1701 ixas.ixa_cpid = NOPID;
1702 1702 ixas.ixa_tsl = ira->ira_tsl; /* Behave as a multi-level responder */
1703 1703 ixas.ixa_ifindex = 0;
1704 1704 ixas.ixa_ipst = ipst;
1705 1705 ixas.ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;
1706 1706
1707 1707 if (!(ira->ira_flags & IRAF_IPSEC_SECURE)) {
1708 1708 /*
1709 1709 * This packet should go out the same way as it
1710 1710 * came in i.e in clear, independent of the IPsec policy
1711 1711 * for transmitting packets.
1712 1712 */
1713 1713 ixas.ixa_flags |= IXAF_NO_IPSEC;
1714 1714 } else {
1715 1715 if (!ipsec_in_to_out(ira, &ixas, mp, ipha, NULL)) {
1716 1716 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1717 1717 /* Note: mp already consumed and ip_drop_packet done */
1718 1718 return;
1719 1719 }
1720 1720 }
1721 1721 if (ira->ira_flags & IRAF_MULTIBROADCAST) {
1722 1722 /*
1723 1723 * Not one or our addresses (IRE_LOCALs), thus we let
1724 1724 * ip_output_simple pick the source.
1725 1725 */
1726 1726 ipha->ipha_src = INADDR_ANY;
1727 1727 ixas.ixa_flags |= IXAF_SET_SOURCE;
1728 1728 }
1729 1729 /* Should we send with DF and use dce_pmtu? */
1730 1730 if (ipst->ips_ipv4_icmp_return_pmtu) {
1731 1731 ixas.ixa_flags |= IXAF_PMTU_DISCOVERY;
1732 1732 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS;
1733 1733 }
1734 1734
1735 1735 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutMsgs);
1736 1736
1737 1737 (void) ip_output_simple(mp, &ixas);
1738 1738 ixa_cleanup(&ixas);
1739 1739 }
1740 1740
1741 1741 /*
1742 1742 * Verify the ICMP messages for either for ICMP error or redirect packet.
1743 1743 * The caller should have fully pulled up the message. If it's a redirect
1744 1744 * packet, only basic checks on IP header will be done; otherwise, verify
1745 1745 * the packet by looking at the included ULP header.
1746 1746 *
1747 1747 * Called before icmp_inbound_error_fanout_v4 is called.
1748 1748 */
1749 1749 static boolean_t
1750 1750 icmp_inbound_verify_v4(mblk_t *mp, icmph_t *icmph, ip_recv_attr_t *ira)
1751 1751 {
1752 1752 ill_t *ill = ira->ira_ill;
1753 1753 int hdr_length;
1754 1754 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
1755 1755 conn_t *connp;
1756 1756 ipha_t *ipha; /* Inner IP header */
1757 1757
1758 1758 ipha = (ipha_t *)&icmph[1];
1759 1759 if ((uchar_t *)ipha + IP_SIMPLE_HDR_LENGTH > mp->b_wptr)
1760 1760 goto truncated;
1761 1761
1762 1762 hdr_length = IPH_HDR_LENGTH(ipha);
1763 1763
1764 1764 if ((IPH_HDR_VERSION(ipha) != IPV4_VERSION))
1765 1765 goto discard_pkt;
1766 1766
1767 1767 if (hdr_length < sizeof (ipha_t))
1768 1768 goto truncated;
1769 1769
1770 1770 if ((uchar_t *)ipha + hdr_length > mp->b_wptr)
1771 1771 goto truncated;
1772 1772
1773 1773 /*
1774 1774 * Stop here for ICMP_REDIRECT.
1775 1775 */
1776 1776 if (icmph->icmph_type == ICMP_REDIRECT)
1777 1777 return (B_TRUE);
1778 1778
1779 1779 /*
1780 1780 * ICMP errors only.
1781 1781 */
1782 1782 switch (ipha->ipha_protocol) {
1783 1783 case IPPROTO_UDP:
1784 1784 /*
1785 1785 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1786 1786 * transport header.
1787 1787 */
1788 1788 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1789 1789 mp->b_wptr)
1790 1790 goto truncated;
1791 1791 break;
1792 1792 case IPPROTO_TCP: {
1793 1793 tcpha_t *tcpha;
1794 1794
1795 1795 /*
1796 1796 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1797 1797 * transport header.
1798 1798 */
1799 1799 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1800 1800 mp->b_wptr)
1801 1801 goto truncated;
1802 1802
1803 1803 tcpha = (tcpha_t *)((uchar_t *)ipha + hdr_length);
1804 1804 connp = ipcl_tcp_lookup_reversed_ipv4(ipha, tcpha, TCPS_LISTEN,
1805 1805 ipst);
1806 1806 if (connp == NULL)
1807 1807 goto discard_pkt;
1808 1808
1809 1809 if ((connp->conn_verifyicmp != NULL) &&
1810 1810 !connp->conn_verifyicmp(connp, tcpha, icmph, NULL, ira)) {
1811 1811 CONN_DEC_REF(connp);
1812 1812 goto discard_pkt;
1813 1813 }
1814 1814 CONN_DEC_REF(connp);
1815 1815 break;
1816 1816 }
1817 1817 case IPPROTO_SCTP:
1818 1818 /*
1819 1819 * Verify we have at least ICMP_MIN_TP_HDR_LEN bytes of
1820 1820 * transport header.
1821 1821 */
1822 1822 if ((uchar_t *)ipha + hdr_length + ICMP_MIN_TP_HDR_LEN >
1823 1823 mp->b_wptr)
1824 1824 goto truncated;
1825 1825 break;
1826 1826 case IPPROTO_ESP:
1827 1827 case IPPROTO_AH:
1828 1828 break;
1829 1829 case IPPROTO_ENCAP:
1830 1830 if ((uchar_t *)ipha + hdr_length + sizeof (ipha_t) >
1831 1831 mp->b_wptr)
1832 1832 goto truncated;
1833 1833 break;
1834 1834 default:
1835 1835 break;
1836 1836 }
1837 1837
1838 1838 return (B_TRUE);
1839 1839
1840 1840 discard_pkt:
1841 1841 /* Bogus ICMP error. */
1842 1842 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
1843 1843 return (B_FALSE);
1844 1844
1845 1845 truncated:
1846 1846 /* We pulled up everthing already. Must be truncated */
1847 1847 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
1848 1848 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
1849 1849 return (B_FALSE);
1850 1850 }
1851 1851
1852 1852 /* Table from RFC 1191 */
1853 1853 static int icmp_frag_size_table[] =
1854 1854 { 32000, 17914, 8166, 4352, 2002, 1496, 1006, 508, 296, 68 };
1855 1855
1856 1856 /*
1857 1857 * Process received ICMP Packet too big.
1858 1858 * Just handles the DCE create/update, including using the above table of
1859 1859 * PMTU guesses. The caller is responsible for validating the packet before
1860 1860 * passing it in and also to fanout the ICMP error to any matching transport
1861 1861 * conns. Assumes the message has been fully pulled up and verified.
1862 1862 *
1863 1863 * Before getting here, the caller has called icmp_inbound_verify_v4()
1864 1864 * that should have verified with ULP to prevent undoing the changes we're
1865 1865 * going to make to DCE. For example, TCP might have verified that the packet
1866 1866 * which generated error is in the send window.
1867 1867 *
1868 1868 * In some cases modified this MTU in the ICMP header packet; the caller
1869 1869 * should pass to the matching ULP after this returns.
1870 1870 */
1871 1871 static void
1872 1872 icmp_inbound_too_big_v4(icmph_t *icmph, ip_recv_attr_t *ira)
1873 1873 {
1874 1874 dce_t *dce;
1875 1875 int old_mtu;
1876 1876 int mtu, orig_mtu;
1877 1877 ipaddr_t dst;
1878 1878 boolean_t disable_pmtud;
1879 1879 ill_t *ill = ira->ira_ill;
1880 1880 ip_stack_t *ipst = ill->ill_ipst;
1881 1881 uint_t hdr_length;
1882 1882 ipha_t *ipha;
1883 1883
1884 1884 /* Caller already pulled up everything. */
1885 1885 ipha = (ipha_t *)&icmph[1];
1886 1886 ASSERT(icmph->icmph_type == ICMP_DEST_UNREACHABLE &&
1887 1887 icmph->icmph_code == ICMP_FRAGMENTATION_NEEDED);
1888 1888 ASSERT(ill != NULL);
1889 1889
1890 1890 hdr_length = IPH_HDR_LENGTH(ipha);
1891 1891
1892 1892 /*
1893 1893 * We handle path MTU for source routed packets since the DCE
1894 1894 * is looked up using the final destination.
1895 1895 */
1896 1896 dst = ip_get_dst(ipha);
1897 1897
1898 1898 dce = dce_lookup_and_add_v4(dst, ipst);
1899 1899 if (dce == NULL) {
1900 1900 /* Couldn't add a unique one - ENOMEM */
1901 1901 ip1dbg(("icmp_inbound_too_big_v4: no dce for 0x%x\n",
1902 1902 ntohl(dst)));
1903 1903 return;
1904 1904 }
1905 1905
1906 1906 /* Check for MTU discovery advice as described in RFC 1191 */
1907 1907 mtu = ntohs(icmph->icmph_du_mtu);
1908 1908 orig_mtu = mtu;
1909 1909 disable_pmtud = B_FALSE;
1910 1910
1911 1911 mutex_enter(&dce->dce_lock);
1912 1912 if (dce->dce_flags & DCEF_PMTU)
1913 1913 old_mtu = dce->dce_pmtu;
1914 1914 else
1915 1915 old_mtu = ill->ill_mtu;
1916 1916
1917 1917 if (icmph->icmph_du_zero != 0 || mtu < ipst->ips_ip_pmtu_min) {
1918 1918 uint32_t length;
1919 1919 int i;
1920 1920
1921 1921 /*
1922 1922 * Use the table from RFC 1191 to figure out
1923 1923 * the next "plateau" based on the length in
1924 1924 * the original IP packet.
1925 1925 */
1926 1926 length = ntohs(ipha->ipha_length);
1927 1927 DTRACE_PROBE2(ip4__pmtu__guess, dce_t *, dce,
1928 1928 uint32_t, length);
1929 1929 if (old_mtu <= length &&
1930 1930 old_mtu >= length - hdr_length) {
1931 1931 /*
1932 1932 * Handle broken BSD 4.2 systems that
1933 1933 * return the wrong ipha_length in ICMP
1934 1934 * errors.
1935 1935 */
1936 1936 ip1dbg(("Wrong mtu: sent %d, dce %d\n",
1937 1937 length, old_mtu));
1938 1938 length -= hdr_length;
1939 1939 }
1940 1940 for (i = 0; i < A_CNT(icmp_frag_size_table); i++) {
1941 1941 if (length > icmp_frag_size_table[i])
1942 1942 break;
1943 1943 }
1944 1944 if (i == A_CNT(icmp_frag_size_table)) {
1945 1945 /* Smaller than IP_MIN_MTU! */
1946 1946 ip1dbg(("Too big for packet size %d\n",
1947 1947 length));
1948 1948 disable_pmtud = B_TRUE;
1949 1949 mtu = ipst->ips_ip_pmtu_min;
1950 1950 } else {
1951 1951 mtu = icmp_frag_size_table[i];
1952 1952 ip1dbg(("Calculated mtu %d, packet size %d, "
1953 1953 "before %d\n", mtu, length, old_mtu));
1954 1954 if (mtu < ipst->ips_ip_pmtu_min) {
1955 1955 mtu = ipst->ips_ip_pmtu_min;
1956 1956 disable_pmtud = B_TRUE;
1957 1957 }
1958 1958 }
1959 1959 }
1960 1960 if (disable_pmtud)
1961 1961 dce->dce_flags |= DCEF_TOO_SMALL_PMTU;
1962 1962 else
1963 1963 dce->dce_flags &= ~DCEF_TOO_SMALL_PMTU;
1964 1964
1965 1965 dce->dce_pmtu = MIN(old_mtu, mtu);
1966 1966 /* Prepare to send the new max frag size for the ULP. */
1967 1967 icmph->icmph_du_zero = 0;
1968 1968 icmph->icmph_du_mtu = htons((uint16_t)dce->dce_pmtu);
1969 1969 DTRACE_PROBE4(ip4__pmtu__change, icmph_t *, icmph, dce_t *,
1970 1970 dce, int, orig_mtu, int, mtu);
1971 1971
1972 1972 /* We now have a PMTU for sure */
1973 1973 dce->dce_flags |= DCEF_PMTU;
1974 1974 dce->dce_last_change_time = TICK_TO_SEC(ddi_get_lbolt64());
1975 1975 mutex_exit(&dce->dce_lock);
1976 1976 /*
1977 1977 * After dropping the lock the new value is visible to everyone.
1978 1978 * Then we bump the generation number so any cached values reinspect
1979 1979 * the dce_t.
1980 1980 */
1981 1981 dce_increment_generation(dce);
1982 1982 dce_refrele(dce);
1983 1983 }
1984 1984
1985 1985 /*
1986 1986 * If the packet in error is Self-Encapsulated, icmp_inbound_error_fanout_v4
1987 1987 * calls this function.
1988 1988 */
1989 1989 static mblk_t *
1990 1990 icmp_inbound_self_encap_error_v4(mblk_t *mp, ipha_t *ipha, ipha_t *in_ipha)
1991 1991 {
1992 1992 int length;
1993 1993
1994 1994 ASSERT(mp->b_datap->db_type == M_DATA);
1995 1995
1996 1996 /* icmp_inbound_v4 has already pulled up the whole error packet */
1997 1997 ASSERT(mp->b_cont == NULL);
1998 1998
1999 1999 /*
2000 2000 * The length that we want to overlay is the inner header
2001 2001 * and what follows it.
2002 2002 */
2003 2003 length = msgdsize(mp) - ((uchar_t *)in_ipha - mp->b_rptr);
2004 2004
2005 2005 /*
2006 2006 * Overlay the inner header and whatever follows it over the
2007 2007 * outer header.
2008 2008 */
2009 2009 bcopy((uchar_t *)in_ipha, (uchar_t *)ipha, length);
2010 2010
2011 2011 /* Adjust for what we removed */
2012 2012 mp->b_wptr -= (uchar_t *)in_ipha - (uchar_t *)ipha;
2013 2013 return (mp);
2014 2014 }
2015 2015
2016 2016 /*
2017 2017 * Try to pass the ICMP message upstream in case the ULP cares.
2018 2018 *
2019 2019 * If the packet that caused the ICMP error is secure, we send
2020 2020 * it to AH/ESP to make sure that the attached packet has a
2021 2021 * valid association. ipha in the code below points to the
2022 2022 * IP header of the packet that caused the error.
2023 2023 *
2024 2024 * For IPsec cases, we let the next-layer-up (which has access to
2025 2025 * cached policy on the conn_t, or can query the SPD directly)
2026 2026 * subtract out any IPsec overhead if they must. We therefore make no
2027 2027 * adjustments here for IPsec overhead.
2028 2028 *
2029 2029 * IFN could have been generated locally or by some router.
2030 2030 *
2031 2031 * LOCAL : ire_send_wire (before calling ipsec_out_process) can call
2032 2032 * icmp_frag_needed/icmp_pkt2big_v6 to generated a local IFN.
2033 2033 * This happens because IP adjusted its value of MTU on an
2034 2034 * earlier IFN message and could not tell the upper layer,
2035 2035 * the new adjusted value of MTU e.g. Packet was encrypted
2036 2036 * or there was not enough information to fanout to upper
2037 2037 * layers. Thus on the next outbound datagram, ire_send_wire
2038 2038 * generates the IFN, where IPsec processing has *not* been
2039 2039 * done.
2040 2040 *
2041 2041 * Note that we retain ixa_fragsize across IPsec thus once
2042 2042 * we have picking ixa_fragsize and entered ipsec_out_process we do
2043 2043 * no change the fragsize even if the path MTU changes before
2044 2044 * we reach ip_output_post_ipsec.
2045 2045 *
2046 2046 * In the local case, IRAF_LOOPBACK will be set indicating
2047 2047 * that IFN was generated locally.
2048 2048 *
2049 2049 * ROUTER : IFN could be secure or non-secure.
2050 2050 *
2051 2051 * * SECURE : We use the IPSEC_IN to fanout to AH/ESP if the
2052 2052 * packet in error has AH/ESP headers to validate the AH/ESP
2053 2053 * headers. AH/ESP will verify whether there is a valid SA or
2054 2054 * not and send it back. We will fanout again if we have more
2055 2055 * data in the packet.
2056 2056 *
2057 2057 * If the packet in error does not have AH/ESP, we handle it
2058 2058 * like any other case.
2059 2059 *
2060 2060 * * NON_SECURE : If the packet in error has AH/ESP headers, we send it
2061 2061 * up to AH/ESP for validation. AH/ESP will verify whether there is a
2062 2062 * valid SA or not and send it back. We will fanout again if
2063 2063 * we have more data in the packet.
2064 2064 *
2065 2065 * If the packet in error does not have AH/ESP, we handle it
2066 2066 * like any other case.
2067 2067 *
2068 2068 * The caller must have called icmp_inbound_verify_v4.
2069 2069 */
2070 2070 static void
2071 2071 icmp_inbound_error_fanout_v4(mblk_t *mp, icmph_t *icmph, ip_recv_attr_t *ira)
2072 2072 {
2073 2073 uint16_t *up; /* Pointer to ports in ULP header */
2074 2074 uint32_t ports; /* reversed ports for fanout */
2075 2075 ipha_t ripha; /* With reversed addresses */
2076 2076 ipha_t *ipha; /* Inner IP header */
2077 2077 uint_t hdr_length; /* Inner IP header length */
2078 2078 tcpha_t *tcpha;
2079 2079 conn_t *connp;
2080 2080 ill_t *ill = ira->ira_ill;
2081 2081 ip_stack_t *ipst = ill->ill_ipst;
2082 2082 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
2083 2083 ill_t *rill = ira->ira_rill;
2084 2084
2085 2085 /* Caller already pulled up everything. */
2086 2086 ipha = (ipha_t *)&icmph[1];
2087 2087 ASSERT((uchar_t *)&ipha[1] <= mp->b_wptr);
2088 2088 ASSERT(mp->b_cont == NULL);
2089 2089
2090 2090 hdr_length = IPH_HDR_LENGTH(ipha);
2091 2091 ira->ira_protocol = ipha->ipha_protocol;
2092 2092
2093 2093 /*
2094 2094 * We need a separate IP header with the source and destination
2095 2095 * addresses reversed to do fanout/classification because the ipha in
2096 2096 * the ICMP error is in the form we sent it out.
2097 2097 */
2098 2098 ripha.ipha_src = ipha->ipha_dst;
2099 2099 ripha.ipha_dst = ipha->ipha_src;
2100 2100 ripha.ipha_protocol = ipha->ipha_protocol;
2101 2101 ripha.ipha_version_and_hdr_length = ipha->ipha_version_and_hdr_length;
2102 2102
2103 2103 ip2dbg(("icmp_inbound_error_v4: proto %d %x to %x: %d/%d\n",
2104 2104 ripha.ipha_protocol, ntohl(ipha->ipha_src),
2105 2105 ntohl(ipha->ipha_dst),
2106 2106 icmph->icmph_type, icmph->icmph_code));
2107 2107
2108 2108 switch (ipha->ipha_protocol) {
2109 2109 case IPPROTO_UDP:
2110 2110 up = (uint16_t *)((uchar_t *)ipha + hdr_length);
2111 2111
2112 2112 /* Attempt to find a client stream based on port. */
2113 2113 ip2dbg(("icmp_inbound_error_v4: UDP ports %d to %d\n",
2114 2114 ntohs(up[0]), ntohs(up[1])));
2115 2115
2116 2116 /* Note that we send error to all matches. */
2117 2117 ira->ira_flags |= IRAF_ICMP_ERROR;
2118 2118 ip_fanout_udp_multi_v4(mp, &ripha, up[0], up[1], ira);
2119 2119 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2120 2120 return;
2121 2121
2122 2122 case IPPROTO_TCP:
2123 2123 /*
2124 2124 * Find a TCP client stream for this packet.
2125 2125 * Note that we do a reverse lookup since the header is
2126 2126 * in the form we sent it out.
2127 2127 */
2128 2128 tcpha = (tcpha_t *)((uchar_t *)ipha + hdr_length);
2129 2129 connp = ipcl_tcp_lookup_reversed_ipv4(ipha, tcpha, TCPS_LISTEN,
2130 2130 ipst);
2131 2131 if (connp == NULL)
2132 2132 goto discard_pkt;
2133 2133
2134 2134 if (CONN_INBOUND_POLICY_PRESENT(connp, ipss) ||
2135 2135 (ira->ira_flags & IRAF_IPSEC_SECURE)) {
2136 2136 mp = ipsec_check_inbound_policy(mp, connp,
2137 2137 ipha, NULL, ira);
2138 2138 if (mp == NULL) {
2139 2139 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
2140 2140 /* Note that mp is NULL */
2141 2141 ip_drop_input("ipIfStatsInDiscards", mp, ill);
2142 2142 CONN_DEC_REF(connp);
2143 2143 return;
2144 2144 }
2145 2145 }
2146 2146
2147 2147 ira->ira_flags |= IRAF_ICMP_ERROR;
2148 2148 ira->ira_ill = ira->ira_rill = NULL;
2149 2149 if (IPCL_IS_TCP(connp)) {
2150 2150 SQUEUE_ENTER_ONE(connp->conn_sqp, mp,
2151 2151 connp->conn_recvicmp, connp, ira, SQ_FILL,
2152 2152 SQTAG_TCP_INPUT_ICMP_ERR);
2153 2153 } else {
2154 2154 /* Not TCP; must be SOCK_RAW, IPPROTO_TCP */
2155 2155 (connp->conn_recv)(connp, mp, NULL, ira);
2156 2156 CONN_DEC_REF(connp);
2157 2157 }
2158 2158 ira->ira_ill = ill;
2159 2159 ira->ira_rill = rill;
2160 2160 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2161 2161 return;
2162 2162
2163 2163 case IPPROTO_SCTP:
2164 2164 up = (uint16_t *)((uchar_t *)ipha + hdr_length);
2165 2165 /* Find a SCTP client stream for this packet. */
2166 2166 ((uint16_t *)&ports)[0] = up[1];
2167 2167 ((uint16_t *)&ports)[1] = up[0];
2168 2168
2169 2169 ira->ira_flags |= IRAF_ICMP_ERROR;
2170 2170 ip_fanout_sctp(mp, &ripha, NULL, ports, ira);
2171 2171 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2172 2172 return;
2173 2173
2174 2174 case IPPROTO_ESP:
2175 2175 case IPPROTO_AH:
2176 2176 if (!ipsec_loaded(ipss)) {
2177 2177 ip_proto_not_sup(mp, ira);
2178 2178 return;
2179 2179 }
2180 2180
2181 2181 if (ipha->ipha_protocol == IPPROTO_ESP)
2182 2182 mp = ipsecesp_icmp_error(mp, ira);
2183 2183 else
2184 2184 mp = ipsecah_icmp_error(mp, ira);
2185 2185 if (mp == NULL)
2186 2186 return;
2187 2187
2188 2188 /* Just in case ipsec didn't preserve the NULL b_cont */
2189 2189 if (mp->b_cont != NULL) {
2190 2190 if (!pullupmsg(mp, -1))
2191 2191 goto discard_pkt;
2192 2192 }
2193 2193
2194 2194 /*
2195 2195 * Note that ira_pktlen and ira_ip_hdr_length are no longer
2196 2196 * correct, but we don't use them any more here.
2197 2197 *
2198 2198 * If succesful, the mp has been modified to not include
2199 2199 * the ESP/AH header so we can fanout to the ULP's icmp
2200 2200 * error handler.
2201 2201 */
2202 2202 if (mp->b_wptr - mp->b_rptr < IP_SIMPLE_HDR_LENGTH)
2203 2203 goto truncated;
2204 2204
2205 2205 /* Verify the modified message before any further processes. */
2206 2206 ipha = (ipha_t *)mp->b_rptr;
2207 2207 hdr_length = IPH_HDR_LENGTH(ipha);
2208 2208 icmph = (icmph_t *)&mp->b_rptr[hdr_length];
2209 2209 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
2210 2210 freemsg(mp);
2211 2211 return;
2212 2212 }
2213 2213
2214 2214 icmp_inbound_error_fanout_v4(mp, icmph, ira);
2215 2215 return;
2216 2216
2217 2217 case IPPROTO_ENCAP: {
2218 2218 /* Look for self-encapsulated packets that caused an error */
2219 2219 ipha_t *in_ipha;
2220 2220
2221 2221 /*
2222 2222 * Caller has verified that length has to be
2223 2223 * at least the size of IP header.
2224 2224 */
2225 2225 ASSERT(hdr_length >= sizeof (ipha_t));
2226 2226 /*
2227 2227 * Check the sanity of the inner IP header like
2228 2228 * we did for the outer header.
2229 2229 */
2230 2230 in_ipha = (ipha_t *)((uchar_t *)ipha + hdr_length);
2231 2231 if ((IPH_HDR_VERSION(in_ipha) != IPV4_VERSION)) {
2232 2232 goto discard_pkt;
2233 2233 }
2234 2234 if (IPH_HDR_LENGTH(in_ipha) < sizeof (ipha_t)) {
2235 2235 goto discard_pkt;
2236 2236 }
2237 2237 /* Check for Self-encapsulated tunnels */
2238 2238 if (in_ipha->ipha_src == ipha->ipha_src &&
2239 2239 in_ipha->ipha_dst == ipha->ipha_dst) {
2240 2240
2241 2241 mp = icmp_inbound_self_encap_error_v4(mp, ipha,
2242 2242 in_ipha);
2243 2243 if (mp == NULL)
2244 2244 goto discard_pkt;
2245 2245
2246 2246 /*
2247 2247 * Just in case self_encap didn't preserve the NULL
2248 2248 * b_cont
2249 2249 */
2250 2250 if (mp->b_cont != NULL) {
2251 2251 if (!pullupmsg(mp, -1))
2252 2252 goto discard_pkt;
2253 2253 }
2254 2254 /*
2255 2255 * Note that ira_pktlen and ira_ip_hdr_length are no
2256 2256 * longer correct, but we don't use them any more here.
2257 2257 */
2258 2258 if (mp->b_wptr - mp->b_rptr < IP_SIMPLE_HDR_LENGTH)
2259 2259 goto truncated;
2260 2260
2261 2261 /*
2262 2262 * Verify the modified message before any further
2263 2263 * processes.
2264 2264 */
2265 2265 ipha = (ipha_t *)mp->b_rptr;
2266 2266 hdr_length = IPH_HDR_LENGTH(ipha);
2267 2267 icmph = (icmph_t *)&mp->b_rptr[hdr_length];
2268 2268 if (!icmp_inbound_verify_v4(mp, icmph, ira)) {
2269 2269 freemsg(mp);
2270 2270 return;
2271 2271 }
2272 2272
2273 2273 /*
2274 2274 * The packet in error is self-encapsualted.
2275 2275 * And we are finding it further encapsulated
2276 2276 * which we could not have possibly generated.
2277 2277 */
2278 2278 if (ipha->ipha_protocol == IPPROTO_ENCAP) {
2279 2279 goto discard_pkt;
2280 2280 }
2281 2281 icmp_inbound_error_fanout_v4(mp, icmph, ira);
2282 2282 return;
2283 2283 }
2284 2284 /* No self-encapsulated */
2285 2285 /* FALLTHRU */
2286 2286 }
2287 2287 case IPPROTO_IPV6:
2288 2288 if ((connp = ipcl_iptun_classify_v4(&ripha.ipha_src,
2289 2289 &ripha.ipha_dst, ipst)) != NULL) {
2290 2290 ira->ira_flags |= IRAF_ICMP_ERROR;
2291 2291 connp->conn_recvicmp(connp, mp, NULL, ira);
2292 2292 CONN_DEC_REF(connp);
2293 2293 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2294 2294 return;
2295 2295 }
2296 2296 /*
2297 2297 * No IP tunnel is interested, fallthrough and see
2298 2298 * if a raw socket will want it.
2299 2299 */
2300 2300 /* FALLTHRU */
2301 2301 default:
2302 2302 ira->ira_flags |= IRAF_ICMP_ERROR;
2303 2303 ip_fanout_proto_v4(mp, &ripha, ira);
2304 2304 ira->ira_flags &= ~IRAF_ICMP_ERROR;
2305 2305 return;
2306 2306 }
2307 2307 /* NOTREACHED */
2308 2308 discard_pkt:
2309 2309 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
2310 2310 ip1dbg(("icmp_inbound_error_fanout_v4: drop pkt\n"));
2311 2311 ip_drop_input("ipIfStatsInDiscards", mp, ill);
2312 2312 freemsg(mp);
2313 2313 return;
2314 2314
2315 2315 truncated:
2316 2316 /* We pulled up everthing already. Must be truncated */
2317 2317 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
2318 2318 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
2319 2319 freemsg(mp);
2320 2320 }
2321 2321
2322 2322 /*
2323 2323 * Common IP options parser.
2324 2324 *
2325 2325 * Setup routine: fill in *optp with options-parsing state, then
2326 2326 * tail-call ipoptp_next to return the first option.
2327 2327 */
2328 2328 uint8_t
2329 2329 ipoptp_first(ipoptp_t *optp, ipha_t *ipha)
2330 2330 {
2331 2331 uint32_t totallen; /* total length of all options */
2332 2332
2333 2333 totallen = ipha->ipha_version_and_hdr_length -
2334 2334 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
2335 2335 totallen <<= 2;
2336 2336 optp->ipoptp_next = (uint8_t *)(&ipha[1]);
2337 2337 optp->ipoptp_end = optp->ipoptp_next + totallen;
2338 2338 optp->ipoptp_flags = 0;
2339 2339 return (ipoptp_next(optp));
2340 2340 }
2341 2341
2342 2342 /* Like above but without an ipha_t */
2343 2343 uint8_t
2344 2344 ipoptp_first2(ipoptp_t *optp, uint32_t totallen, uint8_t *opt)
2345 2345 {
2346 2346 optp->ipoptp_next = opt;
2347 2347 optp->ipoptp_end = optp->ipoptp_next + totallen;
2348 2348 optp->ipoptp_flags = 0;
2349 2349 return (ipoptp_next(optp));
2350 2350 }
2351 2351
2352 2352 /*
2353 2353 * Common IP options parser: extract next option.
2354 2354 */
2355 2355 uint8_t
2356 2356 ipoptp_next(ipoptp_t *optp)
2357 2357 {
2358 2358 uint8_t *end = optp->ipoptp_end;
2359 2359 uint8_t *cur = optp->ipoptp_next;
2360 2360 uint8_t opt, len, pointer;
2361 2361
2362 2362 /*
2363 2363 * If cur > end already, then the ipoptp_end or ipoptp_next pointer
2364 2364 * has been corrupted.
2365 2365 */
2366 2366 ASSERT(cur <= end);
2367 2367
2368 2368 if (cur == end)
2369 2369 return (IPOPT_EOL);
2370 2370
2371 2371 opt = cur[IPOPT_OPTVAL];
2372 2372
2373 2373 /*
2374 2374 * Skip any NOP options.
2375 2375 */
2376 2376 while (opt == IPOPT_NOP) {
2377 2377 cur++;
2378 2378 if (cur == end)
2379 2379 return (IPOPT_EOL);
2380 2380 opt = cur[IPOPT_OPTVAL];
2381 2381 }
2382 2382
2383 2383 if (opt == IPOPT_EOL)
2384 2384 return (IPOPT_EOL);
2385 2385
2386 2386 /*
2387 2387 * Option requiring a length.
2388 2388 */
2389 2389 if ((cur + 1) >= end) {
2390 2390 optp->ipoptp_flags |= IPOPTP_ERROR;
2391 2391 return (IPOPT_EOL);
2392 2392 }
2393 2393 len = cur[IPOPT_OLEN];
2394 2394 if (len < 2) {
2395 2395 optp->ipoptp_flags |= IPOPTP_ERROR;
2396 2396 return (IPOPT_EOL);
2397 2397 }
2398 2398 optp->ipoptp_cur = cur;
2399 2399 optp->ipoptp_len = len;
2400 2400 optp->ipoptp_next = cur + len;
2401 2401 if (cur + len > end) {
2402 2402 optp->ipoptp_flags |= IPOPTP_ERROR;
2403 2403 return (IPOPT_EOL);
2404 2404 }
2405 2405
2406 2406 /*
2407 2407 * For the options which require a pointer field, make sure
2408 2408 * its there, and make sure it points to either something
2409 2409 * inside this option, or the end of the option.
2410 2410 */
2411 2411 switch (opt) {
2412 2412 case IPOPT_RR:
2413 2413 case IPOPT_TS:
2414 2414 case IPOPT_LSRR:
2415 2415 case IPOPT_SSRR:
2416 2416 if (len <= IPOPT_OFFSET) {
2417 2417 optp->ipoptp_flags |= IPOPTP_ERROR;
2418 2418 return (opt);
2419 2419 }
2420 2420 pointer = cur[IPOPT_OFFSET];
2421 2421 if (pointer - 1 > len) {
2422 2422 optp->ipoptp_flags |= IPOPTP_ERROR;
2423 2423 return (opt);
2424 2424 }
2425 2425 break;
2426 2426 }
2427 2427
2428 2428 /*
2429 2429 * Sanity check the pointer field based on the type of the
2430 2430 * option.
2431 2431 */
2432 2432 switch (opt) {
2433 2433 case IPOPT_RR:
2434 2434 case IPOPT_SSRR:
2435 2435 case IPOPT_LSRR:
2436 2436 if (pointer < IPOPT_MINOFF_SR)
2437 2437 optp->ipoptp_flags |= IPOPTP_ERROR;
2438 2438 break;
2439 2439 case IPOPT_TS:
2440 2440 if (pointer < IPOPT_MINOFF_IT)
2441 2441 optp->ipoptp_flags |= IPOPTP_ERROR;
2442 2442 /*
2443 2443 * Note that the Internet Timestamp option also
2444 2444 * contains two four bit fields (the Overflow field,
2445 2445 * and the Flag field), which follow the pointer
2446 2446 * field. We don't need to check that these fields
2447 2447 * fall within the length of the option because this
2448 2448 * was implicitely done above. We've checked that the
2449 2449 * pointer value is at least IPOPT_MINOFF_IT, and that
2450 2450 * it falls within the option. Since IPOPT_MINOFF_IT >
2451 2451 * IPOPT_POS_OV_FLG, we don't need the explicit check.
2452 2452 */
2453 2453 ASSERT(len > IPOPT_POS_OV_FLG);
2454 2454 break;
2455 2455 }
2456 2456
2457 2457 return (opt);
2458 2458 }
2459 2459
2460 2460 /*
2461 2461 * Use the outgoing IP header to create an IP_OPTIONS option the way
2462 2462 * it was passed down from the application.
2463 2463 *
2464 2464 * This is compatible with BSD in that it returns
2465 2465 * the reverse source route with the final destination
2466 2466 * as the last entry. The first 4 bytes of the option
2467 2467 * will contain the final destination.
2468 2468 */
2469 2469 int
2470 2470 ip_opt_get_user(conn_t *connp, uchar_t *buf)
2471 2471 {
2472 2472 ipoptp_t opts;
2473 2473 uchar_t *opt;
2474 2474 uint8_t optval;
2475 2475 uint8_t optlen;
2476 2476 uint32_t len = 0;
2477 2477 uchar_t *buf1 = buf;
2478 2478 uint32_t totallen;
2479 2479 ipaddr_t dst;
2480 2480 ip_pkt_t *ipp = &connp->conn_xmit_ipp;
2481 2481
2482 2482 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
2483 2483 return (0);
2484 2484
2485 2485 totallen = ipp->ipp_ipv4_options_len;
2486 2486 if (totallen & 0x3)
2487 2487 return (0);
2488 2488
2489 2489 buf += IP_ADDR_LEN; /* Leave room for final destination */
2490 2490 len += IP_ADDR_LEN;
2491 2491 bzero(buf1, IP_ADDR_LEN);
2492 2492
2493 2493 dst = connp->conn_faddr_v4;
2494 2494
2495 2495 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
2496 2496 optval != IPOPT_EOL;
2497 2497 optval = ipoptp_next(&opts)) {
2498 2498 int off;
2499 2499
2500 2500 opt = opts.ipoptp_cur;
2501 2501 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
2502 2502 break;
2503 2503 }
2504 2504 optlen = opts.ipoptp_len;
2505 2505
2506 2506 switch (optval) {
2507 2507 case IPOPT_SSRR:
2508 2508 case IPOPT_LSRR:
2509 2509
2510 2510 /*
2511 2511 * Insert destination as the first entry in the source
2512 2512 * route and move down the entries on step.
2513 2513 * The last entry gets placed at buf1.
2514 2514 */
2515 2515 buf[IPOPT_OPTVAL] = optval;
2516 2516 buf[IPOPT_OLEN] = optlen;
2517 2517 buf[IPOPT_OFFSET] = optlen;
2518 2518
2519 2519 off = optlen - IP_ADDR_LEN;
2520 2520 if (off < 0) {
2521 2521 /* No entries in source route */
2522 2522 break;
2523 2523 }
2524 2524 /* Last entry in source route if not already set */
2525 2525 if (dst == INADDR_ANY)
2526 2526 bcopy(opt + off, buf1, IP_ADDR_LEN);
2527 2527 off -= IP_ADDR_LEN;
2528 2528
2529 2529 while (off > 0) {
2530 2530 bcopy(opt + off,
2531 2531 buf + off + IP_ADDR_LEN,
2532 2532 IP_ADDR_LEN);
2533 2533 off -= IP_ADDR_LEN;
2534 2534 }
2535 2535 /* ipha_dst into first slot */
2536 2536 bcopy(&dst, buf + off + IP_ADDR_LEN,
2537 2537 IP_ADDR_LEN);
2538 2538 buf += optlen;
2539 2539 len += optlen;
2540 2540 break;
2541 2541
2542 2542 default:
2543 2543 bcopy(opt, buf, optlen);
2544 2544 buf += optlen;
2545 2545 len += optlen;
2546 2546 break;
2547 2547 }
2548 2548 }
2549 2549 done:
2550 2550 /* Pad the resulting options */
2551 2551 while (len & 0x3) {
2552 2552 *buf++ = IPOPT_EOL;
2553 2553 len++;
2554 2554 }
2555 2555 return (len);
2556 2556 }
2557 2557
2558 2558 /*
2559 2559 * Update any record route or timestamp options to include this host.
2560 2560 * Reverse any source route option.
2561 2561 * This routine assumes that the options are well formed i.e. that they
2562 2562 * have already been checked.
2563 2563 */
2564 2564 static void
2565 2565 icmp_options_update(ipha_t *ipha)
2566 2566 {
2567 2567 ipoptp_t opts;
2568 2568 uchar_t *opt;
2569 2569 uint8_t optval;
2570 2570 ipaddr_t src; /* Our local address */
2571 2571 ipaddr_t dst;
2572 2572
2573 2573 ip2dbg(("icmp_options_update\n"));
2574 2574 src = ipha->ipha_src;
2575 2575 dst = ipha->ipha_dst;
2576 2576
2577 2577 for (optval = ipoptp_first(&opts, ipha);
2578 2578 optval != IPOPT_EOL;
2579 2579 optval = ipoptp_next(&opts)) {
2580 2580 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
2581 2581 opt = opts.ipoptp_cur;
2582 2582 ip2dbg(("icmp_options_update: opt %d, len %d\n",
2583 2583 optval, opts.ipoptp_len));
2584 2584 switch (optval) {
2585 2585 int off1, off2;
2586 2586 case IPOPT_SSRR:
2587 2587 case IPOPT_LSRR:
2588 2588 /*
2589 2589 * Reverse the source route. The first entry
2590 2590 * should be the next to last one in the current
2591 2591 * source route (the last entry is our address).
2592 2592 * The last entry should be the final destination.
2593 2593 */
2594 2594 off1 = IPOPT_MINOFF_SR - 1;
2595 2595 off2 = opt[IPOPT_OFFSET] - IP_ADDR_LEN - 1;
2596 2596 if (off2 < 0) {
2597 2597 /* No entries in source route */
2598 2598 ip1dbg((
2599 2599 "icmp_options_update: bad src route\n"));
2600 2600 break;
2601 2601 }
2602 2602 bcopy((char *)opt + off2, &dst, IP_ADDR_LEN);
2603 2603 bcopy(&ipha->ipha_dst, (char *)opt + off2, IP_ADDR_LEN);
2604 2604 bcopy(&dst, &ipha->ipha_dst, IP_ADDR_LEN);
2605 2605 off2 -= IP_ADDR_LEN;
2606 2606
2607 2607 while (off1 < off2) {
2608 2608 bcopy((char *)opt + off1, &src, IP_ADDR_LEN);
2609 2609 bcopy((char *)opt + off2, (char *)opt + off1,
2610 2610 IP_ADDR_LEN);
2611 2611 bcopy(&src, (char *)opt + off2, IP_ADDR_LEN);
2612 2612 off1 += IP_ADDR_LEN;
2613 2613 off2 -= IP_ADDR_LEN;
2614 2614 }
2615 2615 opt[IPOPT_OFFSET] = IPOPT_MINOFF_SR;
2616 2616 break;
2617 2617 }
2618 2618 }
2619 2619 }
2620 2620
2621 2621 /*
2622 2622 * Process received ICMP Redirect messages.
2623 2623 * Assumes the caller has verified that the headers are in the pulled up mblk.
2624 2624 * Consumes mp.
2625 2625 */
2626 2626 static void
2627 2627 icmp_redirect_v4(mblk_t *mp, ipha_t *ipha, icmph_t *icmph, ip_recv_attr_t *ira)
2628 2628 {
2629 2629 ire_t *ire, *nire;
2630 2630 ire_t *prev_ire;
2631 2631 ipaddr_t src, dst, gateway;
2632 2632 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2633 2633 ipha_t *inner_ipha; /* Inner IP header */
2634 2634
2635 2635 /* Caller already pulled up everything. */
2636 2636 inner_ipha = (ipha_t *)&icmph[1];
2637 2637 src = ipha->ipha_src;
2638 2638 dst = inner_ipha->ipha_dst;
2639 2639 gateway = icmph->icmph_rd_gateway;
2640 2640 /* Make sure the new gateway is reachable somehow. */
2641 2641 ire = ire_ftable_lookup_v4(gateway, 0, 0, IRE_ONLINK, NULL,
2642 2642 ALL_ZONES, NULL, MATCH_IRE_TYPE, 0, ipst, NULL);
2643 2643 /*
2644 2644 * Make sure we had a route for the dest in question and that
2645 2645 * that route was pointing to the old gateway (the source of the
2646 2646 * redirect packet.)
2647 2647 * We do longest match and then compare ire_gateway_addr below.
2648 2648 */
2649 2649 prev_ire = ire_ftable_lookup_v4(dst, 0, 0, 0, NULL, ALL_ZONES,
2650 2650 NULL, MATCH_IRE_DSTONLY, 0, ipst, NULL);
2651 2651 /*
2652 2652 * Check that
2653 2653 * the redirect was not from ourselves
2654 2654 * the new gateway and the old gateway are directly reachable
2655 2655 */
2656 2656 if (prev_ire == NULL || ire == NULL ||
2657 2657 (prev_ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK)) ||
2658 2658 (prev_ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) ||
2659 2659 !(ire->ire_type & IRE_IF_ALL) ||
2660 2660 prev_ire->ire_gateway_addr != src) {
2661 2661 BUMP_MIB(&ipst->ips_icmp_mib, icmpInBadRedirects);
2662 2662 ip_drop_input("icmpInBadRedirects - ire", mp, ira->ira_ill);
2663 2663 freemsg(mp);
2664 2664 if (ire != NULL)
2665 2665 ire_refrele(ire);
2666 2666 if (prev_ire != NULL)
2667 2667 ire_refrele(prev_ire);
2668 2668 return;
2669 2669 }
2670 2670
2671 2671 ire_refrele(prev_ire);
2672 2672 ire_refrele(ire);
2673 2673
2674 2674 /*
2675 2675 * TODO: more precise handling for cases 0, 2, 3, the latter two
2676 2676 * require TOS routing
2677 2677 */
2678 2678 switch (icmph->icmph_code) {
2679 2679 case 0:
2680 2680 case 1:
2681 2681 /* TODO: TOS specificity for cases 2 and 3 */
2682 2682 case 2:
2683 2683 case 3:
2684 2684 break;
2685 2685 default:
2686 2686 BUMP_MIB(&ipst->ips_icmp_mib, icmpInBadRedirects);
2687 2687 ip_drop_input("icmpInBadRedirects - code", mp, ira->ira_ill);
2688 2688 freemsg(mp);
2689 2689 return;
2690 2690 }
2691 2691 /*
2692 2692 * Create a Route Association. This will allow us to remember that
2693 2693 * someone we believe told us to use the particular gateway.
2694 2694 */
2695 2695 ire = ire_create(
2696 2696 (uchar_t *)&dst, /* dest addr */
2697 2697 (uchar_t *)&ip_g_all_ones, /* mask */
2698 2698 (uchar_t *)&gateway, /* gateway addr */
2699 2699 IRE_HOST,
2700 2700 NULL, /* ill */
2701 2701 ALL_ZONES,
2702 2702 (RTF_DYNAMIC | RTF_GATEWAY | RTF_HOST),
2703 2703 NULL, /* tsol_gc_t */
2704 2704 ipst);
2705 2705
2706 2706 if (ire == NULL) {
2707 2707 freemsg(mp);
2708 2708 return;
2709 2709 }
2710 2710 nire = ire_add(ire);
2711 2711 /* Check if it was a duplicate entry */
2712 2712 if (nire != NULL && nire != ire) {
2713 2713 ASSERT(nire->ire_identical_ref > 1);
2714 2714 ire_delete(nire);
2715 2715 ire_refrele(nire);
2716 2716 nire = NULL;
2717 2717 }
2718 2718 ire = nire;
2719 2719 if (ire != NULL) {
2720 2720 ire_refrele(ire); /* Held in ire_add */
2721 2721
2722 2722 /* tell routing sockets that we received a redirect */
2723 2723 ip_rts_change(RTM_REDIRECT, dst, gateway, IP_HOST_MASK, 0, src,
2724 2724 (RTF_DYNAMIC | RTF_GATEWAY | RTF_HOST), 0,
2725 2725 (RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_AUTHOR), ipst);
2726 2726 }
2727 2727
2728 2728 /*
2729 2729 * Delete any existing IRE_HOST type redirect ires for this destination.
2730 2730 * This together with the added IRE has the effect of
2731 2731 * modifying an existing redirect.
2732 2732 */
2733 2733 prev_ire = ire_ftable_lookup_v4(dst, 0, src, IRE_HOST, NULL,
2734 2734 ALL_ZONES, NULL, (MATCH_IRE_GW | MATCH_IRE_TYPE), 0, ipst, NULL);
2735 2735 if (prev_ire != NULL) {
2736 2736 if (prev_ire ->ire_flags & RTF_DYNAMIC)
2737 2737 ire_delete(prev_ire);
2738 2738 ire_refrele(prev_ire);
2739 2739 }
2740 2740
2741 2741 freemsg(mp);
2742 2742 }
2743 2743
2744 2744 /*
2745 2745 * Generate an ICMP parameter problem message.
2746 2746 * When called from ip_output side a minimal ip_recv_attr_t needs to be
2747 2747 * constructed by the caller.
2748 2748 */
2749 2749 static void
2750 2750 icmp_param_problem(mblk_t *mp, uint8_t ptr, ip_recv_attr_t *ira)
2751 2751 {
2752 2752 icmph_t icmph;
2753 2753 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2754 2754
2755 2755 mp = icmp_pkt_err_ok(mp, ira);
2756 2756 if (mp == NULL)
2757 2757 return;
2758 2758
2759 2759 bzero(&icmph, sizeof (icmph_t));
2760 2760 icmph.icmph_type = ICMP_PARAM_PROBLEM;
2761 2761 icmph.icmph_pp_ptr = ptr;
2762 2762 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutParmProbs);
2763 2763 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
2764 2764 }
2765 2765
2766 2766 /*
2767 2767 * Build and ship an IPv4 ICMP message using the packet data in mp, and
2768 2768 * the ICMP header pointed to by "stuff". (May be called as writer.)
2769 2769 * Note: assumes that icmp_pkt_err_ok has been called to verify that
2770 2770 * an icmp error packet can be sent.
2771 2771 * Assigns an appropriate source address to the packet. If ipha_dst is
2772 2772 * one of our addresses use it for source. Otherwise let ip_output_simple
2773 2773 * pick the source address.
2774 2774 */
2775 2775 static void
2776 2776 icmp_pkt(mblk_t *mp, void *stuff, size_t len, ip_recv_attr_t *ira)
2777 2777 {
2778 2778 ipaddr_t dst;
2779 2779 icmph_t *icmph;
2780 2780 ipha_t *ipha;
2781 2781 uint_t len_needed;
2782 2782 size_t msg_len;
2783 2783 mblk_t *mp1;
2784 2784 ipaddr_t src;
2785 2785 ire_t *ire;
2786 2786 ip_xmit_attr_t ixas;
2787 2787 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2788 2788
2789 2789 ipha = (ipha_t *)mp->b_rptr;
2790 2790
2791 2791 bzero(&ixas, sizeof (ixas));
2792 2792 ixas.ixa_flags = IXAF_BASIC_SIMPLE_V4;
2793 2793 ixas.ixa_zoneid = ira->ira_zoneid;
2794 2794 ixas.ixa_ifindex = 0;
2795 2795 ixas.ixa_ipst = ipst;
2796 2796 ixas.ixa_cred = kcred;
2797 2797 ixas.ixa_cpid = NOPID;
2798 2798 ixas.ixa_tsl = ira->ira_tsl; /* Behave as a multi-level responder */
2799 2799 ixas.ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;
2800 2800
2801 2801 if (ira->ira_flags & IRAF_IPSEC_SECURE) {
2802 2802 /*
2803 2803 * Apply IPsec based on how IPsec was applied to
2804 2804 * the packet that had the error.
2805 2805 *
2806 2806 * If it was an outbound packet that caused the ICMP
2807 2807 * error, then the caller will have setup the IRA
2808 2808 * appropriately.
2809 2809 */
2810 2810 if (!ipsec_in_to_out(ira, &ixas, mp, ipha, NULL)) {
2811 2811 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsOutDiscards);
2812 2812 /* Note: mp already consumed and ip_drop_packet done */
2813 2813 return;
2814 2814 }
2815 2815 } else {
2816 2816 /*
2817 2817 * This is in clear. The icmp message we are building
2818 2818 * here should go out in clear, independent of our policy.
2819 2819 */
2820 2820 ixas.ixa_flags |= IXAF_NO_IPSEC;
2821 2821 }
2822 2822
2823 2823 /* Remember our eventual destination */
2824 2824 dst = ipha->ipha_src;
2825 2825
2826 2826 /*
2827 2827 * If the packet was for one of our unicast addresses, make
2828 2828 * sure we respond with that as the source. Otherwise
2829 2829 * have ip_output_simple pick the source address.
2830 2830 */
2831 2831 ire = ire_ftable_lookup_v4(ipha->ipha_dst, 0, 0,
2832 2832 (IRE_LOCAL|IRE_LOOPBACK), NULL, ira->ira_zoneid, NULL,
2833 2833 MATCH_IRE_TYPE|MATCH_IRE_ZONEONLY, 0, ipst, NULL);
2834 2834 if (ire != NULL) {
2835 2835 ire_refrele(ire);
2836 2836 src = ipha->ipha_dst;
2837 2837 } else {
2838 2838 src = INADDR_ANY;
2839 2839 ixas.ixa_flags |= IXAF_SET_SOURCE;
2840 2840 }
2841 2841
2842 2842 /*
2843 2843 * Check if we can send back more then 8 bytes in addition to
2844 2844 * the IP header. We try to send 64 bytes of data and the internal
2845 2845 * header in the special cases of ipv4 encapsulated ipv4 or ipv6.
2846 2846 */
2847 2847 len_needed = IPH_HDR_LENGTH(ipha);
2848 2848 if (ipha->ipha_protocol == IPPROTO_ENCAP ||
2849 2849 ipha->ipha_protocol == IPPROTO_IPV6) {
2850 2850 if (!pullupmsg(mp, -1)) {
2851 2851 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsOutDiscards);
2852 2852 ip_drop_output("ipIfStatsOutDiscards", mp, NULL);
2853 2853 freemsg(mp);
2854 2854 return;
2855 2855 }
2856 2856 ipha = (ipha_t *)mp->b_rptr;
2857 2857
2858 2858 if (ipha->ipha_protocol == IPPROTO_ENCAP) {
2859 2859 len_needed += IPH_HDR_LENGTH(((uchar_t *)ipha +
2860 2860 len_needed));
2861 2861 } else {
2862 2862 ip6_t *ip6h = (ip6_t *)((uchar_t *)ipha + len_needed);
2863 2863
2864 2864 ASSERT(ipha->ipha_protocol == IPPROTO_IPV6);
2865 2865 len_needed += ip_hdr_length_v6(mp, ip6h);
2866 2866 }
2867 2867 }
2868 2868 len_needed += ipst->ips_ip_icmp_return;
2869 2869 msg_len = msgdsize(mp);
2870 2870 if (msg_len > len_needed) {
2871 2871 (void) adjmsg(mp, len_needed - msg_len);
2872 2872 msg_len = len_needed;
2873 2873 }
2874 2874 mp1 = allocb(sizeof (icmp_ipha) + len, BPRI_MED);
2875 2875 if (mp1 == NULL) {
2876 2876 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutErrors);
2877 2877 freemsg(mp);
2878 2878 return;
2879 2879 }
2880 2880 mp1->b_cont = mp;
2881 2881 mp = mp1;
2882 2882
2883 2883 /*
2884 2884 * Set IXAF_TRUSTED_ICMP so we can let the ICMP messages this
2885 2885 * node generates be accepted in peace by all on-host destinations.
2886 2886 * If we do NOT assume that all on-host destinations trust
2887 2887 * self-generated ICMP messages, then rework here, ip6.c, and spd.c.
2888 2888 * (Look for IXAF_TRUSTED_ICMP).
2889 2889 */
2890 2890 ixas.ixa_flags |= IXAF_TRUSTED_ICMP;
2891 2891
2892 2892 ipha = (ipha_t *)mp->b_rptr;
2893 2893 mp1->b_wptr = (uchar_t *)ipha + (sizeof (icmp_ipha) + len);
2894 2894 *ipha = icmp_ipha;
2895 2895 ipha->ipha_src = src;
2896 2896 ipha->ipha_dst = dst;
2897 2897 ipha->ipha_ttl = ipst->ips_ip_def_ttl;
2898 2898 msg_len += sizeof (icmp_ipha) + len;
2899 2899 if (msg_len > IP_MAXPACKET) {
2900 2900 (void) adjmsg(mp, IP_MAXPACKET - msg_len);
2901 2901 msg_len = IP_MAXPACKET;
2902 2902 }
2903 2903 ipha->ipha_length = htons((uint16_t)msg_len);
2904 2904 icmph = (icmph_t *)&ipha[1];
2905 2905 bcopy(stuff, icmph, len);
2906 2906 icmph->icmph_checksum = 0;
2907 2907 icmph->icmph_checksum = IP_CSUM(mp, (int32_t)sizeof (ipha_t), 0);
2908 2908 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutMsgs);
2909 2909
2910 2910 (void) ip_output_simple(mp, &ixas);
2911 2911 ixa_cleanup(&ixas);
2912 2912 }
2913 2913
2914 2914 /*
2915 2915 * Determine if an ICMP error packet can be sent given the rate limit.
2916 2916 * The limit consists of an average frequency (icmp_pkt_err_interval measured
2917 2917 * in milliseconds) and a burst size. Burst size number of packets can
2918 2918 * be sent arbitrarely closely spaced.
2919 2919 * The state is tracked using two variables to implement an approximate
2920 2920 * token bucket filter:
2921 2921 * icmp_pkt_err_last - lbolt value when the last burst started
2922 2922 * icmp_pkt_err_sent - number of packets sent in current burst
2923 2923 */
2924 2924 boolean_t
2925 2925 icmp_err_rate_limit(ip_stack_t *ipst)
2926 2926 {
2927 2927 clock_t now = TICK_TO_MSEC(ddi_get_lbolt());
2928 2928 uint_t refilled; /* Number of packets refilled in tbf since last */
2929 2929 /* Guard against changes by loading into local variable */
2930 2930 uint_t err_interval = ipst->ips_ip_icmp_err_interval;
2931 2931
2932 2932 if (err_interval == 0)
2933 2933 return (B_FALSE);
2934 2934
2935 2935 if (ipst->ips_icmp_pkt_err_last > now) {
2936 2936 /* 100HZ lbolt in ms for 32bit arch wraps every 49.7 days */
2937 2937 ipst->ips_icmp_pkt_err_last = 0;
2938 2938 ipst->ips_icmp_pkt_err_sent = 0;
2939 2939 }
2940 2940 /*
2941 2941 * If we are in a burst update the token bucket filter.
2942 2942 * Update the "last" time to be close to "now" but make sure
2943 2943 * we don't loose precision.
2944 2944 */
2945 2945 if (ipst->ips_icmp_pkt_err_sent != 0) {
2946 2946 refilled = (now - ipst->ips_icmp_pkt_err_last)/err_interval;
2947 2947 if (refilled > ipst->ips_icmp_pkt_err_sent) {
2948 2948 ipst->ips_icmp_pkt_err_sent = 0;
2949 2949 } else {
2950 2950 ipst->ips_icmp_pkt_err_sent -= refilled;
2951 2951 ipst->ips_icmp_pkt_err_last += refilled * err_interval;
2952 2952 }
2953 2953 }
2954 2954 if (ipst->ips_icmp_pkt_err_sent == 0) {
2955 2955 /* Start of new burst */
2956 2956 ipst->ips_icmp_pkt_err_last = now;
2957 2957 }
2958 2958 if (ipst->ips_icmp_pkt_err_sent < ipst->ips_ip_icmp_err_burst) {
2959 2959 ipst->ips_icmp_pkt_err_sent++;
2960 2960 ip1dbg(("icmp_err_rate_limit: %d sent in burst\n",
2961 2961 ipst->ips_icmp_pkt_err_sent));
2962 2962 return (B_FALSE);
2963 2963 }
2964 2964 ip1dbg(("icmp_err_rate_limit: dropped\n"));
2965 2965 return (B_TRUE);
2966 2966 }
2967 2967
2968 2968 /*
2969 2969 * Check if it is ok to send an IPv4 ICMP error packet in
2970 2970 * response to the IPv4 packet in mp.
2971 2971 * Free the message and return null if no
2972 2972 * ICMP error packet should be sent.
2973 2973 */
2974 2974 static mblk_t *
2975 2975 icmp_pkt_err_ok(mblk_t *mp, ip_recv_attr_t *ira)
2976 2976 {
2977 2977 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
2978 2978 icmph_t *icmph;
2979 2979 ipha_t *ipha;
2980 2980 uint_t len_needed;
2981 2981
2982 2982 if (!mp)
2983 2983 return (NULL);
2984 2984 ipha = (ipha_t *)mp->b_rptr;
2985 2985 if (ip_csum_hdr(ipha)) {
2986 2986 BUMP_MIB(&ipst->ips_ip_mib, ipIfStatsInCksumErrs);
2987 2987 ip_drop_input("ipIfStatsInCksumErrs", mp, NULL);
2988 2988 freemsg(mp);
2989 2989 return (NULL);
2990 2990 }
2991 2991 if (ip_type_v4(ipha->ipha_dst, ipst) == IRE_BROADCAST ||
2992 2992 ip_type_v4(ipha->ipha_src, ipst) == IRE_BROADCAST ||
2993 2993 CLASSD(ipha->ipha_dst) ||
2994 2994 CLASSD(ipha->ipha_src) ||
2995 2995 (ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_OFFSET)) {
2996 2996 /* Note: only errors to the fragment with offset 0 */
2997 2997 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
2998 2998 freemsg(mp);
2999 2999 return (NULL);
3000 3000 }
3001 3001 if (ipha->ipha_protocol == IPPROTO_ICMP) {
3002 3002 /*
3003 3003 * Check the ICMP type. RFC 1122 sez: don't send ICMP
3004 3004 * errors in response to any ICMP errors.
3005 3005 */
3006 3006 len_needed = IPH_HDR_LENGTH(ipha) + ICMPH_SIZE;
3007 3007 if (mp->b_wptr - mp->b_rptr < len_needed) {
3008 3008 if (!pullupmsg(mp, len_needed)) {
3009 3009 BUMP_MIB(&ipst->ips_icmp_mib, icmpInErrors);
3010 3010 freemsg(mp);
3011 3011 return (NULL);
3012 3012 }
3013 3013 ipha = (ipha_t *)mp->b_rptr;
3014 3014 }
3015 3015 icmph = (icmph_t *)
3016 3016 (&((char *)ipha)[IPH_HDR_LENGTH(ipha)]);
3017 3017 switch (icmph->icmph_type) {
3018 3018 case ICMP_DEST_UNREACHABLE:
3019 3019 case ICMP_SOURCE_QUENCH:
3020 3020 case ICMP_TIME_EXCEEDED:
3021 3021 case ICMP_PARAM_PROBLEM:
3022 3022 case ICMP_REDIRECT:
3023 3023 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
3024 3024 freemsg(mp);
3025 3025 return (NULL);
3026 3026 default:
3027 3027 break;
3028 3028 }
3029 3029 }
3030 3030 /*
3031 3031 * If this is a labeled system, then check to see if we're allowed to
3032 3032 * send a response to this particular sender. If not, then just drop.
3033 3033 */
3034 3034 if (is_system_labeled() && !tsol_can_reply_error(mp, ira)) {
3035 3035 ip2dbg(("icmp_pkt_err_ok: can't respond to packet\n"));
3036 3036 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDrops);
3037 3037 freemsg(mp);
3038 3038 return (NULL);
3039 3039 }
3040 3040 if (icmp_err_rate_limit(ipst)) {
3041 3041 /*
3042 3042 * Only send ICMP error packets every so often.
3043 3043 * This should be done on a per port/source basis,
3044 3044 * but for now this will suffice.
3045 3045 */
3046 3046 freemsg(mp);
3047 3047 return (NULL);
3048 3048 }
3049 3049 return (mp);
3050 3050 }
3051 3051
3052 3052 /*
3053 3053 * Called when a packet was sent out the same link that it arrived on.
3054 3054 * Check if it is ok to send a redirect and then send it.
3055 3055 */
3056 3056 void
3057 3057 ip_send_potential_redirect_v4(mblk_t *mp, ipha_t *ipha, ire_t *ire,
3058 3058 ip_recv_attr_t *ira)
3059 3059 {
3060 3060 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3061 3061 ipaddr_t src, nhop;
3062 3062 mblk_t *mp1;
3063 3063 ire_t *nhop_ire;
3064 3064
3065 3065 /*
3066 3066 * Check the source address to see if it originated
3067 3067 * on the same logical subnet it is going back out on.
3068 3068 * If so, we should be able to send it a redirect.
3069 3069 * Avoid sending a redirect if the destination
3070 3070 * is directly connected (i.e., we matched an IRE_ONLINK),
3071 3071 * or if the packet was source routed out this interface.
3072 3072 *
3073 3073 * We avoid sending a redirect if the
3074 3074 * destination is directly connected
3075 3075 * because it is possible that multiple
3076 3076 * IP subnets may have been configured on
3077 3077 * the link, and the source may not
3078 3078 * be on the same subnet as ip destination,
3079 3079 * even though they are on the same
3080 3080 * physical link.
3081 3081 */
3082 3082 if ((ire->ire_type & IRE_ONLINK) ||
3083 3083 ip_source_routed(ipha, ipst))
3084 3084 return;
3085 3085
3086 3086 nhop_ire = ire_nexthop(ire);
3087 3087 if (nhop_ire == NULL)
3088 3088 return;
3089 3089
3090 3090 nhop = nhop_ire->ire_addr;
3091 3091
3092 3092 if (nhop_ire->ire_type & IRE_IF_CLONE) {
3093 3093 ire_t *ire2;
3094 3094
3095 3095 /* Follow ire_dep_parent to find non-clone IRE_INTERFACE */
3096 3096 mutex_enter(&nhop_ire->ire_lock);
3097 3097 ire2 = nhop_ire->ire_dep_parent;
3098 3098 if (ire2 != NULL)
3099 3099 ire_refhold(ire2);
3100 3100 mutex_exit(&nhop_ire->ire_lock);
3101 3101 ire_refrele(nhop_ire);
3102 3102 nhop_ire = ire2;
3103 3103 }
3104 3104 if (nhop_ire == NULL)
3105 3105 return;
3106 3106
3107 3107 ASSERT(!(nhop_ire->ire_type & IRE_IF_CLONE));
3108 3108
3109 3109 src = ipha->ipha_src;
3110 3110
3111 3111 /*
3112 3112 * We look at the interface ire for the nexthop,
3113 3113 * to see if ipha_src is in the same subnet
3114 3114 * as the nexthop.
3115 3115 */
3116 3116 if ((src & nhop_ire->ire_mask) == (nhop & nhop_ire->ire_mask)) {
3117 3117 /*
3118 3118 * The source is directly connected.
3119 3119 */
3120 3120 mp1 = copymsg(mp);
3121 3121 if (mp1 != NULL) {
3122 3122 icmp_send_redirect(mp1, nhop, ira);
3123 3123 }
3124 3124 }
3125 3125 ire_refrele(nhop_ire);
3126 3126 }
3127 3127
3128 3128 /*
3129 3129 * Generate an ICMP redirect message.
3130 3130 */
3131 3131 static void
3132 3132 icmp_send_redirect(mblk_t *mp, ipaddr_t gateway, ip_recv_attr_t *ira)
3133 3133 {
3134 3134 icmph_t icmph;
3135 3135 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3136 3136
3137 3137 mp = icmp_pkt_err_ok(mp, ira);
3138 3138 if (mp == NULL)
3139 3139 return;
3140 3140
3141 3141 bzero(&icmph, sizeof (icmph_t));
3142 3142 icmph.icmph_type = ICMP_REDIRECT;
3143 3143 icmph.icmph_code = 1;
3144 3144 icmph.icmph_rd_gateway = gateway;
3145 3145 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutRedirects);
3146 3146 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3147 3147 }
3148 3148
3149 3149 /*
3150 3150 * Generate an ICMP time exceeded message.
3151 3151 */
3152 3152 void
3153 3153 icmp_time_exceeded(mblk_t *mp, uint8_t code, ip_recv_attr_t *ira)
3154 3154 {
3155 3155 icmph_t icmph;
3156 3156 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3157 3157
3158 3158 mp = icmp_pkt_err_ok(mp, ira);
3159 3159 if (mp == NULL)
3160 3160 return;
3161 3161
3162 3162 bzero(&icmph, sizeof (icmph_t));
3163 3163 icmph.icmph_type = ICMP_TIME_EXCEEDED;
3164 3164 icmph.icmph_code = code;
3165 3165 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutTimeExcds);
3166 3166 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3167 3167 }
3168 3168
3169 3169 /*
3170 3170 * Generate an ICMP unreachable message.
3171 3171 * When called from ip_output side a minimal ip_recv_attr_t needs to be
3172 3172 * constructed by the caller.
3173 3173 */
3174 3174 void
3175 3175 icmp_unreachable(mblk_t *mp, uint8_t code, ip_recv_attr_t *ira)
3176 3176 {
3177 3177 icmph_t icmph;
3178 3178 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
3179 3179
3180 3180 mp = icmp_pkt_err_ok(mp, ira);
3181 3181 if (mp == NULL)
3182 3182 return;
3183 3183
3184 3184 bzero(&icmph, sizeof (icmph_t));
3185 3185 icmph.icmph_type = ICMP_DEST_UNREACHABLE;
3186 3186 icmph.icmph_code = code;
3187 3187 BUMP_MIB(&ipst->ips_icmp_mib, icmpOutDestUnreachs);
3188 3188 icmp_pkt(mp, &icmph, sizeof (icmph_t), ira);
3189 3189 }
3190 3190
3191 3191 /*
3192 3192 * Latch in the IPsec state for a stream based the policy in the listener
3193 3193 * and the actions in the ip_recv_attr_t.
3194 3194 * Called directly from TCP and SCTP.
3195 3195 */
3196 3196 boolean_t
3197 3197 ip_ipsec_policy_inherit(conn_t *connp, conn_t *lconnp, ip_recv_attr_t *ira)
3198 3198 {
3199 3199 ASSERT(lconnp->conn_policy != NULL);
3200 3200 ASSERT(connp->conn_policy == NULL);
3201 3201
3202 3202 IPPH_REFHOLD(lconnp->conn_policy);
3203 3203 connp->conn_policy = lconnp->conn_policy;
3204 3204
3205 3205 if (ira->ira_ipsec_action != NULL) {
3206 3206 if (connp->conn_latch == NULL) {
3207 3207 connp->conn_latch = iplatch_create();
3208 3208 if (connp->conn_latch == NULL)
3209 3209 return (B_FALSE);
3210 3210 }
3211 3211 ipsec_latch_inbound(connp, ira);
3212 3212 }
3213 3213 return (B_TRUE);
3214 3214 }
3215 3215
3216 3216 /*
3217 3217 * Verify whether or not the IP address is a valid local address.
3218 3218 * Could be a unicast, including one for a down interface.
3219 3219 * If allow_mcbc then a multicast or broadcast address is also
3220 3220 * acceptable.
3221 3221 *
3222 3222 * In the case of a broadcast/multicast address, however, the
3223 3223 * upper protocol is expected to reset the src address
3224 3224 * to zero when we return IPVL_MCAST/IPVL_BCAST so that
3225 3225 * no packets are emitted with broadcast/multicast address as
3226 3226 * source address (that violates hosts requirements RFC 1122)
3227 3227 * The addresses valid for bind are:
3228 3228 * (1) - INADDR_ANY (0)
3229 3229 * (2) - IP address of an UP interface
3230 3230 * (3) - IP address of a DOWN interface
3231 3231 * (4) - valid local IP broadcast addresses. In this case
3232 3232 * the conn will only receive packets destined to
3233 3233 * the specified broadcast address.
3234 3234 * (5) - a multicast address. In this case
3235 3235 * the conn will only receive packets destined to
3236 3236 * the specified multicast address. Note: the
3237 3237 * application still has to issue an
3238 3238 * IP_ADD_MEMBERSHIP socket option.
3239 3239 *
3240 3240 * In all the above cases, the bound address must be valid in the current zone.
3241 3241 * When the address is loopback, multicast or broadcast, there might be many
3242 3242 * matching IREs so bind has to look up based on the zone.
3243 3243 */
3244 3244 ip_laddr_t
3245 3245 ip_laddr_verify_v4(ipaddr_t src_addr, zoneid_t zoneid,
3246 3246 ip_stack_t *ipst, boolean_t allow_mcbc)
3247 3247 {
3248 3248 ire_t *src_ire;
3249 3249
3250 3250 ASSERT(src_addr != INADDR_ANY);
3251 3251
3252 3252 src_ire = ire_ftable_lookup_v4(src_addr, 0, 0, 0,
3253 3253 NULL, zoneid, NULL, MATCH_IRE_ZONEONLY, 0, ipst, NULL);
3254 3254
3255 3255 /*
3256 3256 * If an address other than in6addr_any is requested,
3257 3257 * we verify that it is a valid address for bind
3258 3258 * Note: Following code is in if-else-if form for
3259 3259 * readability compared to a condition check.
3260 3260 */
3261 3261 if (src_ire != NULL && (src_ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK))) {
3262 3262 /*
3263 3263 * (2) Bind to address of local UP interface
3264 3264 */
3265 3265 ire_refrele(src_ire);
3266 3266 return (IPVL_UNICAST_UP);
3267 3267 } else if (src_ire != NULL && src_ire->ire_type & IRE_BROADCAST) {
3268 3268 /*
3269 3269 * (4) Bind to broadcast address
3270 3270 */
3271 3271 ire_refrele(src_ire);
3272 3272 if (allow_mcbc)
3273 3273 return (IPVL_BCAST);
3274 3274 else
3275 3275 return (IPVL_BAD);
3276 3276 } else if (CLASSD(src_addr)) {
3277 3277 /* (5) bind to multicast address. */
3278 3278 if (src_ire != NULL)
3279 3279 ire_refrele(src_ire);
3280 3280
3281 3281 if (allow_mcbc)
3282 3282 return (IPVL_MCAST);
3283 3283 else
3284 3284 return (IPVL_BAD);
3285 3285 } else {
3286 3286 ipif_t *ipif;
3287 3287
3288 3288 /*
3289 3289 * (3) Bind to address of local DOWN interface?
3290 3290 * (ipif_lookup_addr() looks up all interfaces
3291 3291 * but we do not get here for UP interfaces
3292 3292 * - case (2) above)
3293 3293 */
3294 3294 if (src_ire != NULL)
3295 3295 ire_refrele(src_ire);
3296 3296
3297 3297 ipif = ipif_lookup_addr(src_addr, NULL, zoneid, ipst);
3298 3298 if (ipif == NULL)
3299 3299 return (IPVL_BAD);
3300 3300
3301 3301 /* Not a useful source? */
3302 3302 if (ipif->ipif_flags & (IPIF_NOLOCAL | IPIF_ANYCAST)) {
3303 3303 ipif_refrele(ipif);
3304 3304 return (IPVL_BAD);
3305 3305 }
3306 3306 ipif_refrele(ipif);
3307 3307 return (IPVL_UNICAST_DOWN);
3308 3308 }
3309 3309 }
3310 3310
3311 3311 /*
3312 3312 * Insert in the bind fanout for IPv4 and IPv6.
3313 3313 * The caller should already have used ip_laddr_verify_v*() before calling
3314 3314 * this.
3315 3315 */
3316 3316 int
3317 3317 ip_laddr_fanout_insert(conn_t *connp)
3318 3318 {
3319 3319 int error;
3320 3320
3321 3321 /*
3322 3322 * Allow setting new policies. For example, disconnects result
3323 3323 * in us being called. As we would have set conn_policy_cached
3324 3324 * to B_TRUE before, we should set it to B_FALSE, so that policy
3325 3325 * can change after the disconnect.
3326 3326 */
3327 3327 connp->conn_policy_cached = B_FALSE;
3328 3328
3329 3329 error = ipcl_bind_insert(connp);
3330 3330 if (error != 0) {
3331 3331 if (connp->conn_anon_port) {
3332 3332 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
3333 3333 connp->conn_mlp_type, connp->conn_proto,
3334 3334 ntohs(connp->conn_lport), B_FALSE);
3335 3335 }
3336 3336 connp->conn_mlp_type = mlptSingle;
3337 3337 }
3338 3338 return (error);
3339 3339 }
3340 3340
3341 3341 /*
3342 3342 * Verify that both the source and destination addresses are valid. If
3343 3343 * IPDF_VERIFY_DST is not set, then the destination address may be unreachable,
3344 3344 * i.e. have no route to it. Protocols like TCP want to verify destination
3345 3345 * reachability, while tunnels do not.
3346 3346 *
3347 3347 * Determine the route, the interface, and (optionally) the source address
3348 3348 * to use to reach a given destination.
3349 3349 * Note that we allow connect to broadcast and multicast addresses when
3350 3350 * IPDF_ALLOW_MCBC is set.
3351 3351 * first_hop and dst_addr are normally the same, but if source routing
3352 3352 * they will differ; in that case the first_hop is what we'll use for the
3353 3353 * routing lookup but the dce and label checks will be done on dst_addr,
3354 3354 *
3355 3355 * If uinfo is set, then we fill in the best available information
3356 3356 * we have for the destination. This is based on (in priority order) any
3357 3357 * metrics and path MTU stored in a dce_t, route metrics, and finally the
3358 3358 * ill_mtu/ill_mc_mtu.
3359 3359 *
3360 3360 * Tsol note: If we have a source route then dst_addr != firsthop. But we
3361 3361 * always do the label check on dst_addr.
3362 3362 */
3363 3363 int
3364 3364 ip_set_destination_v4(ipaddr_t *src_addrp, ipaddr_t dst_addr, ipaddr_t firsthop,
3365 3365 ip_xmit_attr_t *ixa, iulp_t *uinfo, uint32_t flags, uint_t mac_mode)
3366 3366 {
3367 3367 ire_t *ire = NULL;
3368 3368 int error = 0;
3369 3369 ipaddr_t setsrc; /* RTF_SETSRC */
3370 3370 zoneid_t zoneid = ixa->ixa_zoneid; /* Honors SO_ALLZONES */
3371 3371 ip_stack_t *ipst = ixa->ixa_ipst;
3372 3372 dce_t *dce;
3373 3373 uint_t pmtu;
3374 3374 uint_t generation;
3375 3375 nce_t *nce;
3376 3376 ill_t *ill = NULL;
3377 3377 boolean_t multirt = B_FALSE;
3378 3378
3379 3379 ASSERT(ixa->ixa_flags & IXAF_IS_IPV4);
3380 3380
3381 3381 /*
3382 3382 * We never send to zero; the ULPs map it to the loopback address.
3383 3383 * We can't allow it since we use zero to mean unitialized in some
3384 3384 * places.
3385 3385 */
3386 3386 ASSERT(dst_addr != INADDR_ANY);
3387 3387
3388 3388 if (is_system_labeled()) {
3389 3389 ts_label_t *tsl = NULL;
3390 3390
3391 3391 error = tsol_check_dest(ixa->ixa_tsl, &dst_addr, IPV4_VERSION,
3392 3392 mac_mode, (flags & IPDF_ZONE_IS_GLOBAL) != 0, &tsl);
3393 3393 if (error != 0)
3394 3394 return (error);
3395 3395 if (tsl != NULL) {
3396 3396 /* Update the label */
3397 3397 ip_xmit_attr_replace_tsl(ixa, tsl);
3398 3398 }
3399 3399 }
3400 3400
3401 3401 setsrc = INADDR_ANY;
3402 3402 /*
3403 3403 * Select a route; For IPMP interfaces, we would only select
3404 3404 * a "hidden" route (i.e., going through a specific under_ill)
3405 3405 * if ixa_ifindex has been specified.
3406 3406 */
3407 3407 ire = ip_select_route_v4(firsthop, *src_addrp, ixa,
3408 3408 &generation, &setsrc, &error, &multirt);
3409 3409 ASSERT(ire != NULL); /* IRE_NOROUTE if none found */
3410 3410 if (error != 0)
3411 3411 goto bad_addr;
3412 3412
3413 3413 /*
3414 3414 * ire can't be a broadcast or multicast unless IPDF_ALLOW_MCBC is set.
3415 3415 * If IPDF_VERIFY_DST is set, the destination must be reachable;
3416 3416 * Otherwise the destination needn't be reachable.
3417 3417 *
3418 3418 * If we match on a reject or black hole, then we've got a
3419 3419 * local failure. May as well fail out the connect() attempt,
3420 3420 * since it's never going to succeed.
3421 3421 */
3422 3422 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
3423 3423 /*
3424 3424 * If we're verifying destination reachability, we always want
3425 3425 * to complain here.
3426 3426 *
3427 3427 * If we're not verifying destination reachability but the
3428 3428 * destination has a route, we still want to fail on the
3429 3429 * temporary address and broadcast address tests.
3430 3430 *
3431 3431 * In both cases do we let the code continue so some reasonable
3432 3432 * information is returned to the caller. That enables the
3433 3433 * caller to use (and even cache) the IRE. conn_ip_ouput will
3434 3434 * use the generation mismatch path to check for the unreachable
3435 3435 * case thereby avoiding any specific check in the main path.
3436 3436 */
3437 3437 ASSERT(generation == IRE_GENERATION_VERIFY);
3438 3438 if (flags & IPDF_VERIFY_DST) {
3439 3439 /*
3440 3440 * Set errno but continue to set up ixa_ire to be
3441 3441 * the RTF_REJECT|RTF_BLACKHOLE IRE.
3442 3442 * That allows callers to use ip_output to get an
3443 3443 * ICMP error back.
3444 3444 */
3445 3445 if (!(ire->ire_type & IRE_HOST))
3446 3446 error = ENETUNREACH;
3447 3447 else
3448 3448 error = EHOSTUNREACH;
3449 3449 }
3450 3450 }
3451 3451
3452 3452 if ((ire->ire_type & (IRE_BROADCAST|IRE_MULTICAST)) &&
3453 3453 !(flags & IPDF_ALLOW_MCBC)) {
3454 3454 ire_refrele(ire);
3455 3455 ire = ire_reject(ipst, B_FALSE);
3456 3456 generation = IRE_GENERATION_VERIFY;
3457 3457 error = ENETUNREACH;
3458 3458 }
3459 3459
3460 3460 /* Cache things */
3461 3461 if (ixa->ixa_ire != NULL)
3462 3462 ire_refrele_notr(ixa->ixa_ire);
3463 3463 #ifdef DEBUG
3464 3464 ire_refhold_notr(ire);
3465 3465 ire_refrele(ire);
3466 3466 #endif
3467 3467 ixa->ixa_ire = ire;
3468 3468 ixa->ixa_ire_generation = generation;
3469 3469
3470 3470 /*
3471 3471 * Ensure that ixa_dce is always set any time that ixa_ire is set,
3472 3472 * since some callers will send a packet to conn_ip_output() even if
3473 3473 * there's an error.
3474 3474 */
3475 3475 if (flags & IPDF_UNIQUE_DCE) {
3476 3476 /* Fallback to the default dce if allocation fails */
3477 3477 dce = dce_lookup_and_add_v4(dst_addr, ipst);
3478 3478 if (dce != NULL)
3479 3479 generation = dce->dce_generation;
3480 3480 else
3481 3481 dce = dce_lookup_v4(dst_addr, ipst, &generation);
3482 3482 } else {
3483 3483 dce = dce_lookup_v4(dst_addr, ipst, &generation);
3484 3484 }
3485 3485 ASSERT(dce != NULL);
3486 3486 if (ixa->ixa_dce != NULL)
3487 3487 dce_refrele_notr(ixa->ixa_dce);
3488 3488 #ifdef DEBUG
3489 3489 dce_refhold_notr(dce);
3490 3490 dce_refrele(dce);
3491 3491 #endif
3492 3492 ixa->ixa_dce = dce;
3493 3493 ixa->ixa_dce_generation = generation;
3494 3494
3495 3495 /*
3496 3496 * For multicast with multirt we have a flag passed back from
3497 3497 * ire_lookup_multi_ill_v4 since we don't have an IRE for each
3498 3498 * possible multicast address.
3499 3499 * We also need a flag for multicast since we can't check
3500 3500 * whether RTF_MULTIRT is set in ixa_ire for multicast.
3501 3501 */
3502 3502 if (multirt) {
3503 3503 ixa->ixa_postfragfn = ip_postfrag_multirt_v4;
3504 3504 ixa->ixa_flags |= IXAF_MULTIRT_MULTICAST;
3505 3505 } else {
3506 3506 ixa->ixa_postfragfn = ire->ire_postfragfn;
3507 3507 ixa->ixa_flags &= ~IXAF_MULTIRT_MULTICAST;
3508 3508 }
3509 3509 if (!(ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))) {
3510 3510 /* Get an nce to cache. */
3511 3511 nce = ire_to_nce(ire, firsthop, NULL);
3512 3512 if (nce == NULL) {
3513 3513 /* Allocation failure? */
3514 3514 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3515 3515 } else {
3516 3516 if (ixa->ixa_nce != NULL)
3517 3517 nce_refrele(ixa->ixa_nce);
3518 3518 ixa->ixa_nce = nce;
3519 3519 }
3520 3520 }
3521 3521
3522 3522 /*
3523 3523 * If the source address is a loopback address, the
3524 3524 * destination had best be local or multicast.
3525 3525 * If we are sending to an IRE_LOCAL using a loopback source then
3526 3526 * it had better be the same zoneid.
3527 3527 */
3528 3528 if (*src_addrp == htonl(INADDR_LOOPBACK)) {
3529 3529 if ((ire->ire_type & IRE_LOCAL) && ire->ire_zoneid != zoneid) {
3530 3530 ire = NULL; /* Stored in ixa_ire */
3531 3531 error = EADDRNOTAVAIL;
3532 3532 goto bad_addr;
3533 3533 }
3534 3534 if (!(ire->ire_type & (IRE_LOOPBACK|IRE_LOCAL|IRE_MULTICAST))) {
3535 3535 ire = NULL; /* Stored in ixa_ire */
3536 3536 error = EADDRNOTAVAIL;
3537 3537 goto bad_addr;
3538 3538 }
3539 3539 }
3540 3540 if (ire->ire_type & IRE_BROADCAST) {
3541 3541 /*
3542 3542 * If the ULP didn't have a specified source, then we
3543 3543 * make sure we reselect the source when sending
3544 3544 * broadcasts out different interfaces.
3545 3545 */
3546 3546 if (flags & IPDF_SELECT_SRC)
3547 3547 ixa->ixa_flags |= IXAF_SET_SOURCE;
3548 3548 else
3549 3549 ixa->ixa_flags &= ~IXAF_SET_SOURCE;
3550 3550 }
3551 3551
3552 3552 /*
3553 3553 * Does the caller want us to pick a source address?
3554 3554 */
3555 3555 if (flags & IPDF_SELECT_SRC) {
3556 3556 ipaddr_t src_addr;
3557 3557
3558 3558 /*
3559 3559 * We use use ire_nexthop_ill to avoid the under ipmp
3560 3560 * interface for source address selection. Note that for ipmp
3561 3561 * probe packets, ixa_ifindex would have been specified, and
3562 3562 * the ip_select_route() invocation would have picked an ire
3563 3563 * will ire_ill pointing at an under interface.
3564 3564 */
3565 3565 ill = ire_nexthop_ill(ire);
3566 3566
3567 3567 /* If unreachable we have no ill but need some source */
3568 3568 if (ill == NULL) {
3569 3569 src_addr = htonl(INADDR_LOOPBACK);
3570 3570 /* Make sure we look for a better source address */
3571 3571 generation = SRC_GENERATION_VERIFY;
3572 3572 } else {
3573 3573 error = ip_select_source_v4(ill, setsrc, dst_addr,
3574 3574 ixa->ixa_multicast_ifaddr, zoneid,
3575 3575 ipst, &src_addr, &generation, NULL);
3576 3576 if (error != 0) {
3577 3577 ire = NULL; /* Stored in ixa_ire */
3578 3578 goto bad_addr;
3579 3579 }
3580 3580 }
3581 3581
3582 3582 /*
3583 3583 * We allow the source address to to down.
3584 3584 * However, we check that we don't use the loopback address
3585 3585 * as a source when sending out on the wire.
3586 3586 */
3587 3587 if ((src_addr == htonl(INADDR_LOOPBACK)) &&
3588 3588 !(ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK|IRE_MULTICAST)) &&
3589 3589 !(ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))) {
3590 3590 ire = NULL; /* Stored in ixa_ire */
3591 3591 error = EADDRNOTAVAIL;
3592 3592 goto bad_addr;
3593 3593 }
3594 3594
3595 3595 *src_addrp = src_addr;
3596 3596 ixa->ixa_src_generation = generation;
3597 3597 }
3598 3598
3599 3599 /*
3600 3600 * Make sure we don't leave an unreachable ixa_nce in place
3601 3601 * since ip_select_route is used when we unplumb i.e., remove
3602 3602 * references on ixa_ire, ixa_nce, and ixa_dce.
3603 3603 */
3604 3604 nce = ixa->ixa_nce;
3605 3605 if (nce != NULL && nce->nce_is_condemned) {
3606 3606 nce_refrele(nce);
3607 3607 ixa->ixa_nce = NULL;
3608 3608 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3609 3609 }
3610 3610
3611 3611 /*
3612 3612 * The caller has set IXAF_PMTU_DISCOVERY if path MTU is desired.
3613 3613 * However, we can't do it for IPv4 multicast or broadcast.
3614 3614 */
3615 3615 if (ire->ire_type & (IRE_BROADCAST|IRE_MULTICAST))
3616 3616 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY;
3617 3617
3618 3618 /*
3619 3619 * Set initial value for fragmentation limit. Either conn_ip_output
3620 3620 * or ULP might updates it when there are routing changes.
3621 3621 * Handles a NULL ixa_ire->ire_ill or a NULL ixa_nce for RTF_REJECT.
3622 3622 */
3623 3623 pmtu = ip_get_pmtu(ixa);
3624 3624 ixa->ixa_fragsize = pmtu;
3625 3625 /* Make sure ixa_fragsize and ixa_pmtu remain identical */
3626 3626 if (ixa->ixa_flags & IXAF_VERIFY_PMTU)
3627 3627 ixa->ixa_pmtu = pmtu;
3628 3628
3629 3629 /*
3630 3630 * Extract information useful for some transports.
3631 3631 * First we look for DCE metrics. Then we take what we have in
3632 3632 * the metrics in the route, where the offlink is used if we have
3633 3633 * one.
3634 3634 */
3635 3635 if (uinfo != NULL) {
3636 3636 bzero(uinfo, sizeof (*uinfo));
3637 3637
3638 3638 if (dce->dce_flags & DCEF_UINFO)
3639 3639 *uinfo = dce->dce_uinfo;
3640 3640
3641 3641 rts_merge_metrics(uinfo, &ire->ire_metrics);
3642 3642
3643 3643 /* Allow ire_metrics to decrease the path MTU from above */
3644 3644 if (uinfo->iulp_mtu == 0 || uinfo->iulp_mtu > pmtu)
3645 3645 uinfo->iulp_mtu = pmtu;
3646 3646
3647 3647 uinfo->iulp_localnet = (ire->ire_type & IRE_ONLINK) != 0;
3648 3648 uinfo->iulp_loopback = (ire->ire_type & IRE_LOOPBACK) != 0;
3649 3649 uinfo->iulp_local = (ire->ire_type & IRE_LOCAL) != 0;
3650 3650 }
3651 3651
3652 3652 if (ill != NULL)
3653 3653 ill_refrele(ill);
3654 3654
3655 3655 return (error);
3656 3656
3657 3657 bad_addr:
3658 3658 if (ire != NULL)
3659 3659 ire_refrele(ire);
3660 3660
3661 3661 if (ill != NULL)
3662 3662 ill_refrele(ill);
3663 3663
3664 3664 /*
3665 3665 * Make sure we don't leave an unreachable ixa_nce in place
3666 3666 * since ip_select_route is used when we unplumb i.e., remove
3667 3667 * references on ixa_ire, ixa_nce, and ixa_dce.
3668 3668 */
3669 3669 nce = ixa->ixa_nce;
3670 3670 if (nce != NULL && nce->nce_is_condemned) {
3671 3671 nce_refrele(nce);
3672 3672 ixa->ixa_nce = NULL;
3673 3673 ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
3674 3674 }
3675 3675
3676 3676 return (error);
3677 3677 }
3678 3678
3679 3679
3680 3680 /*
3681 3681 * Get the base MTU for the case when path MTU discovery is not used.
3682 3682 * Takes the MTU of the IRE into account.
3683 3683 */
3684 3684 uint_t
3685 3685 ip_get_base_mtu(ill_t *ill, ire_t *ire)
3686 3686 {
3687 3687 uint_t mtu;
3688 3688 uint_t iremtu = ire->ire_metrics.iulp_mtu;
3689 3689
3690 3690 if (ire->ire_type & (IRE_MULTICAST|IRE_BROADCAST))
3691 3691 mtu = ill->ill_mc_mtu;
3692 3692 else
3693 3693 mtu = ill->ill_mtu;
3694 3694
3695 3695 if (iremtu != 0 && iremtu < mtu)
3696 3696 mtu = iremtu;
3697 3697
3698 3698 return (mtu);
3699 3699 }
3700 3700
3701 3701 /*
3702 3702 * Get the PMTU for the attributes. Handles both IPv4 and IPv6.
3703 3703 * Assumes that ixa_ire, dce, and nce have already been set up.
3704 3704 *
3705 3705 * The caller has set IXAF_PMTU_DISCOVERY if path MTU discovery is desired.
3706 3706 * We avoid path MTU discovery if it is disabled with ndd.
3707 3707 * Furtermore, if the path MTU is too small, then we don't set DF for IPv4.
3708 3708 *
3709 3709 * NOTE: We also used to turn it off for source routed packets. That
3710 3710 * is no longer required since the dce is per final destination.
3711 3711 */
3712 3712 uint_t
3713 3713 ip_get_pmtu(ip_xmit_attr_t *ixa)
3714 3714 {
3715 3715 ip_stack_t *ipst = ixa->ixa_ipst;
3716 3716 dce_t *dce;
3717 3717 nce_t *nce;
3718 3718 ire_t *ire;
3719 3719 uint_t pmtu;
3720 3720
3721 3721 ire = ixa->ixa_ire;
3722 3722 dce = ixa->ixa_dce;
3723 3723 nce = ixa->ixa_nce;
3724 3724
3725 3725 /*
3726 3726 * If path MTU discovery has been turned off by ndd, then we ignore
3727 3727 * any dce_pmtu and for IPv4 we will not set DF.
3728 3728 */
3729 3729 if (!ipst->ips_ip_path_mtu_discovery)
3730 3730 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY;
3731 3731
3732 3732 pmtu = IP_MAXPACKET;
3733 3733 /*
3734 3734 * Decide whether whether IPv4 sets DF
3735 3735 * For IPv6 "no DF" means to use the 1280 mtu
3736 3736 */
3737 3737 if (ixa->ixa_flags & IXAF_PMTU_DISCOVERY) {
3738 3738 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3739 3739 } else {
3740 3740 ixa->ixa_flags &= ~IXAF_PMTU_IPV4_DF;
3741 3741 if (!(ixa->ixa_flags & IXAF_IS_IPV4))
3742 3742 pmtu = IPV6_MIN_MTU;
3743 3743 }
3744 3744
3745 3745 /* Check if the PMTU is to old before we use it */
3746 3746 if ((dce->dce_flags & DCEF_PMTU) &&
3747 3747 TICK_TO_SEC(ddi_get_lbolt64()) - dce->dce_last_change_time >
3748 3748 ipst->ips_ip_pathmtu_interval) {
3749 3749 /*
3750 3750 * Older than 20 minutes. Drop the path MTU information.
3751 3751 */
3752 3752 mutex_enter(&dce->dce_lock);
3753 3753 dce->dce_flags &= ~(DCEF_PMTU|DCEF_TOO_SMALL_PMTU);
3754 3754 dce->dce_last_change_time = TICK_TO_SEC(ddi_get_lbolt64());
3755 3755 mutex_exit(&dce->dce_lock);
3756 3756 dce_increment_generation(dce);
3757 3757 }
3758 3758
3759 3759 /* The metrics on the route can lower the path MTU */
3760 3760 if (ire->ire_metrics.iulp_mtu != 0 &&
3761 3761 ire->ire_metrics.iulp_mtu < pmtu)
3762 3762 pmtu = ire->ire_metrics.iulp_mtu;
3763 3763
3764 3764 /*
3765 3765 * If the path MTU is smaller than some minimum, we still use dce_pmtu
3766 3766 * above (would be 576 for IPv4 and 1280 for IPv6), but we clear
3767 3767 * IXAF_PMTU_IPV4_DF so that we avoid setting DF for IPv4.
3768 3768 */
3769 3769 if (ixa->ixa_flags & IXAF_PMTU_DISCOVERY) {
3770 3770 if (dce->dce_flags & DCEF_PMTU) {
3771 3771 if (dce->dce_pmtu < pmtu)
3772 3772 pmtu = dce->dce_pmtu;
3773 3773
3774 3774 if (dce->dce_flags & DCEF_TOO_SMALL_PMTU) {
3775 3775 ixa->ixa_flags |= IXAF_PMTU_TOO_SMALL;
3776 3776 ixa->ixa_flags &= ~IXAF_PMTU_IPV4_DF;
3777 3777 } else {
3778 3778 ixa->ixa_flags &= ~IXAF_PMTU_TOO_SMALL;
3779 3779 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3780 3780 }
3781 3781 } else {
3782 3782 ixa->ixa_flags &= ~IXAF_PMTU_TOO_SMALL;
3783 3783 ixa->ixa_flags |= IXAF_PMTU_IPV4_DF;
3784 3784 }
3785 3785 }
3786 3786
3787 3787 /*
3788 3788 * If we have an IRE_LOCAL we use the loopback mtu instead of
3789 3789 * the ill for going out the wire i.e., IRE_LOCAL gets the same
3790 3790 * mtu as IRE_LOOPBACK.
3791 3791 */
3792 3792 if (ire->ire_type & (IRE_LOCAL|IRE_LOOPBACK)) {
3793 3793 uint_t loopback_mtu;
3794 3794
3795 3795 loopback_mtu = (ire->ire_ipversion == IPV6_VERSION) ?
3796 3796 ip_loopback_mtu_v6plus : ip_loopback_mtuplus;
3797 3797
3798 3798 if (loopback_mtu < pmtu)
3799 3799 pmtu = loopback_mtu;
3800 3800 } else if (nce != NULL) {
3801 3801 /*
3802 3802 * Make sure we don't exceed the interface MTU.
3803 3803 * In the case of RTF_REJECT or RTF_BLACKHOLE we might not have
3804 3804 * an ill. We'd use the above IP_MAXPACKET in that case just
3805 3805 * to tell the transport something larger than zero.
3806 3806 */
3807 3807 if (ire->ire_type & (IRE_MULTICAST|IRE_BROADCAST)) {
3808 3808 if (nce->nce_common->ncec_ill->ill_mc_mtu < pmtu)
3809 3809 pmtu = nce->nce_common->ncec_ill->ill_mc_mtu;
3810 3810 if (nce->nce_common->ncec_ill != nce->nce_ill &&
3811 3811 nce->nce_ill->ill_mc_mtu < pmtu) {
3812 3812 /*
3813 3813 * for interfaces in an IPMP group, the mtu of
3814 3814 * the nce_ill (under_ill) could be different
3815 3815 * from the mtu of the ncec_ill, so we take the
3816 3816 * min of the two.
3817 3817 */
3818 3818 pmtu = nce->nce_ill->ill_mc_mtu;
3819 3819 }
3820 3820 } else {
3821 3821 if (nce->nce_common->ncec_ill->ill_mtu < pmtu)
3822 3822 pmtu = nce->nce_common->ncec_ill->ill_mtu;
3823 3823 if (nce->nce_common->ncec_ill != nce->nce_ill &&
3824 3824 nce->nce_ill->ill_mtu < pmtu) {
3825 3825 /*
3826 3826 * for interfaces in an IPMP group, the mtu of
3827 3827 * the nce_ill (under_ill) could be different
3828 3828 * from the mtu of the ncec_ill, so we take the
3829 3829 * min of the two.
3830 3830 */
3831 3831 pmtu = nce->nce_ill->ill_mtu;
3832 3832 }
3833 3833 }
3834 3834 }
3835 3835
3836 3836 /*
3837 3837 * Handle the IPV6_USE_MIN_MTU socket option or ancillary data.
3838 3838 * Only applies to IPv6.
3839 3839 */
3840 3840 if (!(ixa->ixa_flags & IXAF_IS_IPV4)) {
3841 3841 if (ixa->ixa_flags & IXAF_USE_MIN_MTU) {
3842 3842 switch (ixa->ixa_use_min_mtu) {
3843 3843 case IPV6_USE_MIN_MTU_MULTICAST:
3844 3844 if (ire->ire_type & IRE_MULTICAST)
3845 3845 pmtu = IPV6_MIN_MTU;
3846 3846 break;
3847 3847 case IPV6_USE_MIN_MTU_ALWAYS:
3848 3848 pmtu = IPV6_MIN_MTU;
3849 3849 break;
3850 3850 case IPV6_USE_MIN_MTU_NEVER:
3851 3851 break;
3852 3852 }
3853 3853 } else {
3854 3854 /* Default is IPV6_USE_MIN_MTU_MULTICAST */
3855 3855 if (ire->ire_type & IRE_MULTICAST)
3856 3856 pmtu = IPV6_MIN_MTU;
3857 3857 }
3858 3858 }
3859 3859
3860 3860 /*
3861 3861 * After receiving an ICMPv6 "packet too big" message with a
3862 3862 * MTU < 1280, and for multirouted IPv6 packets, the IP layer
3863 3863 * will insert a 8-byte fragment header in every packet. We compensate
3864 3864 * for those cases by returning a smaller path MTU to the ULP.
3865 3865 *
3866 3866 * In the case of CGTP then ip_output will add a fragment header.
3867 3867 * Make sure there is room for it by telling a smaller number
3868 3868 * to the transport.
3869 3869 *
3870 3870 * When IXAF_IPV6_ADDR_FRAGHDR we subtract the frag hdr here
3871 3871 * so the ULPs consistently see a iulp_pmtu and ip_get_pmtu()
3872 3872 * which is the size of the packets it can send.
3873 3873 */
3874 3874 if (!(ixa->ixa_flags & IXAF_IS_IPV4)) {
3875 3875 if ((dce->dce_flags & DCEF_TOO_SMALL_PMTU) ||
3876 3876 (ire->ire_flags & RTF_MULTIRT) ||
3877 3877 (ixa->ixa_flags & IXAF_MULTIRT_MULTICAST)) {
3878 3878 pmtu -= sizeof (ip6_frag_t);
3879 3879 ixa->ixa_flags |= IXAF_IPV6_ADD_FRAGHDR;
3880 3880 }
3881 3881 }
3882 3882
3883 3883 return (pmtu);
3884 3884 }
3885 3885
3886 3886 /*
3887 3887 * Carve "len" bytes out of an mblk chain, consuming any we empty, and duping
3888 3888 * the final piece where we don't. Return a pointer to the first mblk in the
3889 3889 * result, and update the pointer to the next mblk to chew on. If anything
3890 3890 * goes wrong (i.e., dupb fails), we waste everything in sight and return a
3891 3891 * NULL pointer.
3892 3892 */
3893 3893 mblk_t *
3894 3894 ip_carve_mp(mblk_t **mpp, ssize_t len)
3895 3895 {
3896 3896 mblk_t *mp0;
3897 3897 mblk_t *mp1;
3898 3898 mblk_t *mp2;
3899 3899
3900 3900 if (!len || !mpp || !(mp0 = *mpp))
3901 3901 return (NULL);
3902 3902 /* If we aren't going to consume the first mblk, we need a dup. */
3903 3903 if (mp0->b_wptr - mp0->b_rptr > len) {
3904 3904 mp1 = dupb(mp0);
3905 3905 if (mp1) {
3906 3906 /* Partition the data between the two mblks. */
3907 3907 mp1->b_wptr = mp1->b_rptr + len;
3908 3908 mp0->b_rptr = mp1->b_wptr;
3909 3909 /*
3910 3910 * after adjustments if mblk not consumed is now
3911 3911 * unaligned, try to align it. If this fails free
3912 3912 * all messages and let upper layer recover.
3913 3913 */
3914 3914 if (!OK_32PTR(mp0->b_rptr)) {
3915 3915 if (!pullupmsg(mp0, -1)) {
3916 3916 freemsg(mp0);
3917 3917 freemsg(mp1);
3918 3918 *mpp = NULL;
3919 3919 return (NULL);
3920 3920 }
3921 3921 }
3922 3922 }
3923 3923 return (mp1);
3924 3924 }
3925 3925 /* Eat through as many mblks as we need to get len bytes. */
3926 3926 len -= mp0->b_wptr - mp0->b_rptr;
3927 3927 for (mp2 = mp1 = mp0; (mp2 = mp2->b_cont) != 0 && len; mp1 = mp2) {
3928 3928 if (mp2->b_wptr - mp2->b_rptr > len) {
3929 3929 /*
3930 3930 * We won't consume the entire last mblk. Like
3931 3931 * above, dup and partition it.
3932 3932 */
3933 3933 mp1->b_cont = dupb(mp2);
3934 3934 mp1 = mp1->b_cont;
3935 3935 if (!mp1) {
3936 3936 /*
3937 3937 * Trouble. Rather than go to a lot of
3938 3938 * trouble to clean up, we free the messages.
3939 3939 * This won't be any worse than losing it on
3940 3940 * the wire.
3941 3941 */
3942 3942 freemsg(mp0);
3943 3943 freemsg(mp2);
3944 3944 *mpp = NULL;
3945 3945 return (NULL);
3946 3946 }
3947 3947 mp1->b_wptr = mp1->b_rptr + len;
3948 3948 mp2->b_rptr = mp1->b_wptr;
3949 3949 /*
3950 3950 * after adjustments if mblk not consumed is now
3951 3951 * unaligned, try to align it. If this fails free
3952 3952 * all messages and let upper layer recover.
3953 3953 */
3954 3954 if (!OK_32PTR(mp2->b_rptr)) {
3955 3955 if (!pullupmsg(mp2, -1)) {
3956 3956 freemsg(mp0);
3957 3957 freemsg(mp2);
3958 3958 *mpp = NULL;
3959 3959 return (NULL);
3960 3960 }
3961 3961 }
3962 3962 *mpp = mp2;
3963 3963 return (mp0);
3964 3964 }
3965 3965 /* Decrement len by the amount we just got. */
3966 3966 len -= mp2->b_wptr - mp2->b_rptr;
3967 3967 }
3968 3968 /*
3969 3969 * len should be reduced to zero now. If not our caller has
3970 3970 * screwed up.
3971 3971 */
3972 3972 if (len) {
3973 3973 /* Shouldn't happen! */
3974 3974 freemsg(mp0);
3975 3975 *mpp = NULL;
3976 3976 return (NULL);
3977 3977 }
3978 3978 /*
3979 3979 * We consumed up to exactly the end of an mblk. Detach the part
3980 3980 * we are returning from the rest of the chain.
3981 3981 */
3982 3982 mp1->b_cont = NULL;
3983 3983 *mpp = mp2;
3984 3984 return (mp0);
3985 3985 }
3986 3986
3987 3987 /* The ill stream is being unplumbed. Called from ip_close */
3988 3988 int
3989 3989 ip_modclose(ill_t *ill)
3990 3990 {
3991 3991 boolean_t success;
3992 3992 ipsq_t *ipsq;
3993 3993 ipif_t *ipif;
3994 3994 queue_t *q = ill->ill_rq;
3995 3995 ip_stack_t *ipst = ill->ill_ipst;
3996 3996 int i;
3997 3997 arl_ill_common_t *ai = ill->ill_common;
3998 3998
3999 3999 /*
4000 4000 * The punlink prior to this may have initiated a capability
4001 4001 * negotiation. But ipsq_enter will block until that finishes or
4002 4002 * times out.
4003 4003 */
4004 4004 success = ipsq_enter(ill, B_FALSE, NEW_OP);
4005 4005
4006 4006 /*
4007 4007 * Open/close/push/pop is guaranteed to be single threaded
4008 4008 * per stream by STREAMS. FS guarantees that all references
4009 4009 * from top are gone before close is called. So there can't
4010 4010 * be another close thread that has set CONDEMNED on this ill.
4011 4011 * and cause ipsq_enter to return failure.
4012 4012 */
4013 4013 ASSERT(success);
4014 4014 ipsq = ill->ill_phyint->phyint_ipsq;
4015 4015
4016 4016 /*
4017 4017 * Mark it condemned. No new reference will be made to this ill.
4018 4018 * Lookup functions will return an error. Threads that try to
4019 4019 * increment the refcnt must check for ILL_CAN_LOOKUP. This ensures
4020 4020 * that the refcnt will drop down to zero.
4021 4021 */
4022 4022 mutex_enter(&ill->ill_lock);
4023 4023 ill->ill_state_flags |= ILL_CONDEMNED;
4024 4024 for (ipif = ill->ill_ipif; ipif != NULL;
4025 4025 ipif = ipif->ipif_next) {
4026 4026 ipif->ipif_state_flags |= IPIF_CONDEMNED;
4027 4027 }
4028 4028 /*
4029 4029 * Wake up anybody waiting to enter the ipsq. ipsq_enter
4030 4030 * returns error if ILL_CONDEMNED is set
4031 4031 */
4032 4032 cv_broadcast(&ill->ill_cv);
4033 4033 mutex_exit(&ill->ill_lock);
4034 4034
4035 4035 /*
4036 4036 * Send all the deferred DLPI messages downstream which came in
4037 4037 * during the small window right before ipsq_enter(). We do this
4038 4038 * without waiting for the ACKs because all the ACKs for M_PROTO
4039 4039 * messages are ignored in ip_rput() when ILL_CONDEMNED is set.
4040 4040 */
4041 4041 ill_dlpi_send_deferred(ill);
4042 4042
4043 4043 /*
4044 4044 * Shut down fragmentation reassembly.
4045 4045 * ill_frag_timer won't start a timer again.
4046 4046 * Now cancel any existing timer
4047 4047 */
4048 4048 (void) untimeout(ill->ill_frag_timer_id);
4049 4049 (void) ill_frag_timeout(ill, 0);
4050 4050
4051 4051 /*
4052 4052 * Call ill_delete to bring down the ipifs, ilms and ill on
4053 4053 * this ill. Then wait for the refcnts to drop to zero.
4054 4054 * ill_is_freeable checks whether the ill is really quiescent.
4055 4055 * Then make sure that threads that are waiting to enter the
4056 4056 * ipsq have seen the error returned by ipsq_enter and have
4057 4057 * gone away. Then we call ill_delete_tail which does the
4058 4058 * DL_UNBIND_REQ with the driver and then qprocsoff.
4059 4059 */
4060 4060 ill_delete(ill);
4061 4061 mutex_enter(&ill->ill_lock);
4062 4062 while (!ill_is_freeable(ill))
4063 4063 cv_wait(&ill->ill_cv, &ill->ill_lock);
4064 4064
4065 4065 while (ill->ill_waiters)
4066 4066 cv_wait(&ill->ill_cv, &ill->ill_lock);
4067 4067
4068 4068 mutex_exit(&ill->ill_lock);
4069 4069
4070 4070 /*
4071 4071 * ill_delete_tail drops reference on ill_ipst, but we need to keep
4072 4072 * it held until the end of the function since the cleanup
4073 4073 * below needs to be able to use the ip_stack_t.
4074 4074 */
4075 4075 netstack_hold(ipst->ips_netstack);
4076 4076
4077 4077 /* qprocsoff is done via ill_delete_tail */
4078 4078 ill_delete_tail(ill);
4079 4079 /*
4080 4080 * synchronously wait for arp stream to unbind. After this, we
4081 4081 * cannot get any data packets up from the driver.
4082 4082 */
4083 4083 arp_unbind_complete(ill);
4084 4084 ASSERT(ill->ill_ipst == NULL);
4085 4085
4086 4086 /*
4087 4087 * Walk through all conns and qenable those that have queued data.
4088 4088 * Close synchronization needs this to
4089 4089 * be done to ensure that all upper layers blocked
4090 4090 * due to flow control to the closing device
4091 4091 * get unblocked.
4092 4092 */
4093 4093 ip1dbg(("ip_wsrv: walking\n"));
4094 4094 for (i = 0; i < TX_FANOUT_SIZE; i++) {
4095 4095 conn_walk_drain(ipst, &ipst->ips_idl_tx_list[i]);
4096 4096 }
4097 4097
4098 4098 /*
4099 4099 * ai can be null if this is an IPv6 ill, or if the IPv4
4100 4100 * stream is being torn down before ARP was plumbed (e.g.,
4101 4101 * /sbin/ifconfig plumbing a stream twice, and encountering
4102 4102 * an error
4103 4103 */
4104 4104 if (ai != NULL) {
4105 4105 ASSERT(!ill->ill_isv6);
4106 4106 mutex_enter(&ai->ai_lock);
4107 4107 ai->ai_ill = NULL;
4108 4108 if (ai->ai_arl == NULL) {
4109 4109 mutex_destroy(&ai->ai_lock);
4110 4110 kmem_free(ai, sizeof (*ai));
4111 4111 } else {
4112 4112 cv_signal(&ai->ai_ill_unplumb_done);
4113 4113 mutex_exit(&ai->ai_lock);
4114 4114 }
4115 4115 }
4116 4116
4117 4117 mutex_enter(&ipst->ips_ip_mi_lock);
4118 4118 mi_close_unlink(&ipst->ips_ip_g_head, (IDP)ill);
4119 4119 mutex_exit(&ipst->ips_ip_mi_lock);
4120 4120
4121 4121 /*
4122 4122 * credp could be null if the open didn't succeed and ip_modopen
4123 4123 * itself calls ip_close.
4124 4124 */
4125 4125 if (ill->ill_credp != NULL)
4126 4126 crfree(ill->ill_credp);
4127 4127
4128 4128 mutex_destroy(&ill->ill_saved_ire_lock);
4129 4129 mutex_destroy(&ill->ill_lock);
4130 4130 rw_destroy(&ill->ill_mcast_lock);
4131 4131 mutex_destroy(&ill->ill_mcast_serializer);
4132 4132 list_destroy(&ill->ill_nce);
4133 4133
4134 4134 /*
4135 4135 * Now we are done with the module close pieces that
4136 4136 * need the netstack_t.
4137 4137 */
4138 4138 netstack_rele(ipst->ips_netstack);
4139 4139
4140 4140 mi_close_free((IDP)ill);
4141 4141 q->q_ptr = WR(q)->q_ptr = NULL;
4142 4142
4143 4143 ipsq_exit(ipsq);
4144 4144
4145 4145 return (0);
4146 4146 }
4147 4147
4148 4148 /*
4149 4149 * This is called as part of close() for IP, UDP, ICMP, and RTS
4150 4150 * in order to quiesce the conn.
4151 4151 */
4152 4152 void
4153 4153 ip_quiesce_conn(conn_t *connp)
4154 4154 {
4155 4155 boolean_t drain_cleanup_reqd = B_FALSE;
4156 4156 boolean_t conn_ioctl_cleanup_reqd = B_FALSE;
4157 4157 boolean_t ilg_cleanup_reqd = B_FALSE;
4158 4158 ip_stack_t *ipst;
4159 4159
4160 4160 ASSERT(!IPCL_IS_TCP(connp));
4161 4161 ipst = connp->conn_netstack->netstack_ip;
4162 4162
4163 4163 /*
4164 4164 * Mark the conn as closing, and this conn must not be
4165 4165 * inserted in future into any list. Eg. conn_drain_insert(),
4166 4166 * won't insert this conn into the conn_drain_list.
4167 4167 *
4168 4168 * conn_idl, and conn_ilg cannot get set henceforth.
4169 4169 */
4170 4170 mutex_enter(&connp->conn_lock);
4171 4171 ASSERT(!(connp->conn_state_flags & CONN_QUIESCED));
4172 4172 connp->conn_state_flags |= CONN_CLOSING;
4173 4173 if (connp->conn_idl != NULL)
4174 4174 drain_cleanup_reqd = B_TRUE;
4175 4175 if (connp->conn_oper_pending_ill != NULL)
4176 4176 conn_ioctl_cleanup_reqd = B_TRUE;
4177 4177 if (connp->conn_dhcpinit_ill != NULL) {
4178 4178 ASSERT(connp->conn_dhcpinit_ill->ill_dhcpinit != 0);
4179 4179 atomic_dec_32(&connp->conn_dhcpinit_ill->ill_dhcpinit);
4180 4180 ill_set_inputfn(connp->conn_dhcpinit_ill);
4181 4181 connp->conn_dhcpinit_ill = NULL;
4182 4182 }
4183 4183 if (connp->conn_ilg != NULL)
4184 4184 ilg_cleanup_reqd = B_TRUE;
4185 4185 mutex_exit(&connp->conn_lock);
4186 4186
4187 4187 if (conn_ioctl_cleanup_reqd)
4188 4188 conn_ioctl_cleanup(connp);
4189 4189
4190 4190 if (is_system_labeled() && connp->conn_anon_port) {
4191 4191 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
4192 4192 connp->conn_mlp_type, connp->conn_proto,
4193 4193 ntohs(connp->conn_lport), B_FALSE);
4194 4194 connp->conn_anon_port = 0;
4195 4195 }
4196 4196 connp->conn_mlp_type = mlptSingle;
4197 4197
4198 4198 /*
4199 4199 * Remove this conn from any fanout list it is on.
4200 4200 * and then wait for any threads currently operating
4201 4201 * on this endpoint to finish
4202 4202 */
4203 4203 ipcl_hash_remove(connp);
4204 4204
4205 4205 /*
4206 4206 * Remove this conn from the drain list, and do any other cleanup that
4207 4207 * may be required. (TCP conns are never flow controlled, and
4208 4208 * conn_idl will be NULL.)
4209 4209 */
4210 4210 if (drain_cleanup_reqd && connp->conn_idl != NULL) {
4211 4211 idl_t *idl = connp->conn_idl;
4212 4212
4213 4213 mutex_enter(&idl->idl_lock);
4214 4214 conn_drain(connp, B_TRUE);
4215 4215 mutex_exit(&idl->idl_lock);
4216 4216 }
4217 4217
4218 4218 if (connp == ipst->ips_ip_g_mrouter)
4219 4219 (void) ip_mrouter_done(ipst);
4220 4220
4221 4221 if (ilg_cleanup_reqd)
4222 4222 ilg_delete_all(connp);
4223 4223
4224 4224 /*
4225 4225 * Now conn refcnt can increase only thru CONN_INC_REF_LOCKED.
4226 4226 * callers from write side can't be there now because close
4227 4227 * is in progress. The only other caller is ipcl_walk
4228 4228 * which checks for the condemned flag.
4229 4229 */
4230 4230 mutex_enter(&connp->conn_lock);
4231 4231 connp->conn_state_flags |= CONN_CONDEMNED;
4232 4232 while (connp->conn_ref != 1)
4233 4233 cv_wait(&connp->conn_cv, &connp->conn_lock);
4234 4234 connp->conn_state_flags |= CONN_QUIESCED;
4235 4235 mutex_exit(&connp->conn_lock);
4236 4236 }
4237 4237
4238 4238 /* ARGSUSED */
4239 4239 int
4240 4240 ip_close(queue_t *q, int flags)
4241 4241 {
4242 4242 conn_t *connp;
4243 4243
4244 4244 /*
4245 4245 * Call the appropriate delete routine depending on whether this is
4246 4246 * a module or device.
4247 4247 */
4248 4248 if (WR(q)->q_next != NULL) {
4249 4249 /* This is a module close */
4250 4250 return (ip_modclose((ill_t *)q->q_ptr));
4251 4251 }
4252 4252
4253 4253 connp = q->q_ptr;
4254 4254 ip_quiesce_conn(connp);
4255 4255
4256 4256 qprocsoff(q);
4257 4257
4258 4258 /*
4259 4259 * Now we are truly single threaded on this stream, and can
4260 4260 * delete the things hanging off the connp, and finally the connp.
4261 4261 * We removed this connp from the fanout list, it cannot be
4262 4262 * accessed thru the fanouts, and we already waited for the
4263 4263 * conn_ref to drop to 0. We are already in close, so
4264 4264 * there cannot be any other thread from the top. qprocsoff
4265 4265 * has completed, and service has completed or won't run in
4266 4266 * future.
4267 4267 */
4268 4268 ASSERT(connp->conn_ref == 1);
4269 4269
4270 4270 inet_minor_free(connp->conn_minor_arena, connp->conn_dev);
4271 4271
4272 4272 connp->conn_ref--;
4273 4273 ipcl_conn_destroy(connp);
4274 4274
4275 4275 q->q_ptr = WR(q)->q_ptr = NULL;
4276 4276 return (0);
4277 4277 }
4278 4278
4279 4279 /*
4280 4280 * Wapper around putnext() so that ip_rts_request can merely use
4281 4281 * conn_recv.
4282 4282 */
4283 4283 /*ARGSUSED2*/
4284 4284 static void
4285 4285 ip_conn_input(void *arg1, mblk_t *mp, void *arg2, ip_recv_attr_t *ira)
4286 4286 {
4287 4287 conn_t *connp = (conn_t *)arg1;
4288 4288
4289 4289 putnext(connp->conn_rq, mp);
4290 4290 }
4291 4291
4292 4292 /* Dummy in case ICMP error delivery is attempted to a /dev/ip instance */
4293 4293 /* ARGSUSED */
4294 4294 static void
4295 4295 ip_conn_input_icmp(void *arg1, mblk_t *mp, void *arg2, ip_recv_attr_t *ira)
4296 4296 {
4297 4297 freemsg(mp);
4298 4298 }
4299 4299
4300 4300 /*
4301 4301 * Called when the module is about to be unloaded
4302 4302 */
4303 4303 void
4304 4304 ip_ddi_destroy(void)
4305 4305 {
4306 4306 /* This needs to be called before destroying any transports. */
4307 4307 mutex_enter(&cpu_lock);
4308 4308 unregister_cpu_setup_func(ip_tp_cpu_update, NULL);
4309 4309 mutex_exit(&cpu_lock);
4310 4310
4311 4311 tnet_fini();
4312 4312
4313 4313 icmp_ddi_g_destroy();
4314 4314 rts_ddi_g_destroy();
4315 4315 udp_ddi_g_destroy();
4316 4316 sctp_ddi_g_destroy();
4317 4317 tcp_ddi_g_destroy();
4318 4318 ilb_ddi_g_destroy();
4319 4319 dce_g_destroy();
4320 4320 ipsec_policy_g_destroy();
4321 4321 ipcl_g_destroy();
4322 4322 ip_net_g_destroy();
4323 4323 ip_ire_g_fini();
4324 4324 inet_minor_destroy(ip_minor_arena_sa);
4325 4325 #if defined(_LP64)
4326 4326 inet_minor_destroy(ip_minor_arena_la);
4327 4327 #endif
4328 4328
4329 4329 #ifdef DEBUG
4330 4330 list_destroy(&ip_thread_list);
4331 4331 rw_destroy(&ip_thread_rwlock);
4332 4332 tsd_destroy(&ip_thread_data);
4333 4333 #endif
4334 4334
4335 4335 netstack_unregister(NS_IP);
4336 4336 }
4337 4337
4338 4338 /*
4339 4339 * First step in cleanup.
4340 4340 */
4341 4341 /* ARGSUSED */
4342 4342 static void
4343 4343 ip_stack_shutdown(netstackid_t stackid, void *arg)
4344 4344 {
4345 4345 ip_stack_t *ipst = (ip_stack_t *)arg;
4346 4346 kt_did_t ktid;
4347 4347
4348 4348 #ifdef NS_DEBUG
4349 4349 printf("ip_stack_shutdown(%p, stack %d)\n", (void *)ipst, stackid);
4350 4350 #endif
4351 4351
4352 4352 /*
4353 4353 * Perform cleanup for special interfaces (loopback and IPMP).
4354 4354 */
4355 4355 ip_interface_cleanup(ipst);
4356 4356
4357 4357 /*
4358 4358 * The *_hook_shutdown()s start the process of notifying any
4359 4359 * consumers that things are going away.... nothing is destroyed.
4360 4360 */
4361 4361 ipv4_hook_shutdown(ipst);
4362 4362 ipv6_hook_shutdown(ipst);
4363 4363 arp_hook_shutdown(ipst);
4364 4364
4365 4365 mutex_enter(&ipst->ips_capab_taskq_lock);
4366 4366 ktid = ipst->ips_capab_taskq_thread->t_did;
4367 4367 ipst->ips_capab_taskq_quit = B_TRUE;
4368 4368 cv_signal(&ipst->ips_capab_taskq_cv);
4369 4369 mutex_exit(&ipst->ips_capab_taskq_lock);
4370 4370
4371 4371 /*
4372 4372 * In rare occurrences, particularly on virtual hardware where CPUs can
4373 4373 * be de-scheduled, the thread that we just signaled will not run until
4374 4374 * after we have gotten through parts of ip_stack_fini. If that happens
4375 4375 * then we'll try to grab the ips_capab_taskq_lock as part of returning
4376 4376 * from cv_wait which no longer exists.
4377 4377 */
4378 4378 thread_join(ktid);
4379 4379 }
4380 4380
4381 4381 /*
4382 4382 * Free the IP stack instance.
4383 4383 */
4384 4384 static void
4385 4385 ip_stack_fini(netstackid_t stackid, void *arg)
4386 4386 {
4387 4387 ip_stack_t *ipst = (ip_stack_t *)arg;
4388 4388 int ret;
4389 4389
4390 4390 #ifdef NS_DEBUG
4391 4391 printf("ip_stack_fini(%p, stack %d)\n", (void *)ipst, stackid);
4392 4392 #endif
4393 4393 /*
4394 4394 * At this point, all of the notifications that the events and
4395 4395 * protocols are going away have been run, meaning that we can
4396 4396 * now set about starting to clean things up.
4397 4397 */
4398 4398 ipobs_fini(ipst);
4399 4399 ipv4_hook_destroy(ipst);
4400 4400 ipv6_hook_destroy(ipst);
4401 4401 arp_hook_destroy(ipst);
4402 4402 ip_net_destroy(ipst);
4403 4403
4404 4404 ipmp_destroy(ipst);
4405 4405
4406 4406 ip_kstat_fini(stackid, ipst->ips_ip_mibkp);
4407 4407 ipst->ips_ip_mibkp = NULL;
4408 4408 icmp_kstat_fini(stackid, ipst->ips_icmp_mibkp);
4409 4409 ipst->ips_icmp_mibkp = NULL;
4410 4410 ip_kstat2_fini(stackid, ipst->ips_ip_kstat);
4411 4411 ipst->ips_ip_kstat = NULL;
4412 4412 bzero(&ipst->ips_ip_statistics, sizeof (ipst->ips_ip_statistics));
4413 4413 ip6_kstat_fini(stackid, ipst->ips_ip6_kstat);
4414 4414 ipst->ips_ip6_kstat = NULL;
4415 4415 bzero(&ipst->ips_ip6_statistics, sizeof (ipst->ips_ip6_statistics));
4416 4416
4417 4417 kmem_free(ipst->ips_propinfo_tbl,
4418 4418 ip_propinfo_count * sizeof (mod_prop_info_t));
4419 4419 ipst->ips_propinfo_tbl = NULL;
4420 4420
4421 4421 dce_stack_destroy(ipst);
4422 4422 ip_mrouter_stack_destroy(ipst);
4423 4423
4424 4424 ret = untimeout(ipst->ips_igmp_timeout_id);
4425 4425 if (ret == -1) {
4426 4426 ASSERT(ipst->ips_igmp_timeout_id == 0);
4427 4427 } else {
4428 4428 ASSERT(ipst->ips_igmp_timeout_id != 0);
4429 4429 ipst->ips_igmp_timeout_id = 0;
4430 4430 }
4431 4431 ret = untimeout(ipst->ips_igmp_slowtimeout_id);
4432 4432 if (ret == -1) {
4433 4433 ASSERT(ipst->ips_igmp_slowtimeout_id == 0);
4434 4434 } else {
4435 4435 ASSERT(ipst->ips_igmp_slowtimeout_id != 0);
4436 4436 ipst->ips_igmp_slowtimeout_id = 0;
4437 4437 }
4438 4438 ret = untimeout(ipst->ips_mld_timeout_id);
4439 4439 if (ret == -1) {
4440 4440 ASSERT(ipst->ips_mld_timeout_id == 0);
4441 4441 } else {
4442 4442 ASSERT(ipst->ips_mld_timeout_id != 0);
4443 4443 ipst->ips_mld_timeout_id = 0;
4444 4444 }
4445 4445 ret = untimeout(ipst->ips_mld_slowtimeout_id);
4446 4446 if (ret == -1) {
4447 4447 ASSERT(ipst->ips_mld_slowtimeout_id == 0);
4448 4448 } else {
4449 4449 ASSERT(ipst->ips_mld_slowtimeout_id != 0);
4450 4450 ipst->ips_mld_slowtimeout_id = 0;
4451 4451 }
4452 4452
4453 4453 ip_ire_fini(ipst);
4454 4454 ip6_asp_free(ipst);
4455 4455 conn_drain_fini(ipst);
4456 4456 ipcl_destroy(ipst);
4457 4457
4458 4458 mutex_destroy(&ipst->ips_ndp4->ndp_g_lock);
4459 4459 mutex_destroy(&ipst->ips_ndp6->ndp_g_lock);
4460 4460 kmem_free(ipst->ips_ndp4, sizeof (ndp_g_t));
4461 4461 ipst->ips_ndp4 = NULL;
4462 4462 kmem_free(ipst->ips_ndp6, sizeof (ndp_g_t));
4463 4463 ipst->ips_ndp6 = NULL;
4464 4464
4465 4465 if (ipst->ips_loopback_ksp != NULL) {
4466 4466 kstat_delete_netstack(ipst->ips_loopback_ksp, stackid);
4467 4467 ipst->ips_loopback_ksp = NULL;
4468 4468 }
4469 4469
4470 4470 mutex_destroy(&ipst->ips_capab_taskq_lock);
4471 4471 cv_destroy(&ipst->ips_capab_taskq_cv);
4472 4472
4473 4473 rw_destroy(&ipst->ips_srcid_lock);
4474 4474
4475 4475 mutex_destroy(&ipst->ips_ip_mi_lock);
4476 4476 rw_destroy(&ipst->ips_ill_g_usesrc_lock);
4477 4477
4478 4478 mutex_destroy(&ipst->ips_igmp_timer_lock);
4479 4479 mutex_destroy(&ipst->ips_mld_timer_lock);
4480 4480 mutex_destroy(&ipst->ips_igmp_slowtimeout_lock);
4481 4481 mutex_destroy(&ipst->ips_mld_slowtimeout_lock);
4482 4482 mutex_destroy(&ipst->ips_ip_addr_avail_lock);
4483 4483 rw_destroy(&ipst->ips_ill_g_lock);
4484 4484
4485 4485 kmem_free(ipst->ips_phyint_g_list, sizeof (phyint_list_t));
4486 4486 ipst->ips_phyint_g_list = NULL;
4487 4487 kmem_free(ipst->ips_ill_g_heads, sizeof (ill_g_head_t) * MAX_G_HEADS);
4488 4488 ipst->ips_ill_g_heads = NULL;
4489 4489
4490 4490 ldi_ident_release(ipst->ips_ldi_ident);
4491 4491 kmem_free(ipst, sizeof (*ipst));
4492 4492 }
4493 4493
4494 4494 /*
4495 4495 * This function is called from the TSD destructor, and is used to debug
4496 4496 * reference count issues in IP. See block comment in <inet/ip_if.h> for
4497 4497 * details.
4498 4498 */
4499 4499 static void
4500 4500 ip_thread_exit(void *phash)
4501 4501 {
4502 4502 th_hash_t *thh = phash;
4503 4503
4504 4504 rw_enter(&ip_thread_rwlock, RW_WRITER);
4505 4505 list_remove(&ip_thread_list, thh);
4506 4506 rw_exit(&ip_thread_rwlock);
4507 4507 mod_hash_destroy_hash(thh->thh_hash);
4508 4508 kmem_free(thh, sizeof (*thh));
4509 4509 }
4510 4510
4511 4511 /*
4512 4512 * Called when the IP kernel module is loaded into the kernel
4513 4513 */
4514 4514 void
4515 4515 ip_ddi_init(void)
4516 4516 {
4517 4517 ip_squeue_flag = ip_squeue_switch(ip_squeue_enter);
4518 4518
4519 4519 /*
4520 4520 * For IP and TCP the minor numbers should start from 2 since we have 4
4521 4521 * initial devices: ip, ip6, tcp, tcp6.
4522 4522 */
4523 4523 /*
4524 4524 * If this is a 64-bit kernel, then create two separate arenas -
4525 4525 * one for TLIs in the range of INET_MIN_DEV+2 through 2^^18-1, and the
4526 4526 * other for socket apps in the range 2^^18 through 2^^32-1.
4527 4527 */
4528 4528 ip_minor_arena_la = NULL;
4529 4529 ip_minor_arena_sa = NULL;
4530 4530 #if defined(_LP64)
4531 4531 if ((ip_minor_arena_sa = inet_minor_create("ip_minor_arena_sa",
4532 4532 INET_MIN_DEV + 2, MAXMIN32, KM_SLEEP)) == NULL) {
4533 4533 cmn_err(CE_PANIC,
4534 4534 "ip_ddi_init: ip_minor_arena_sa creation failed\n");
4535 4535 }
4536 4536 if ((ip_minor_arena_la = inet_minor_create("ip_minor_arena_la",
4537 4537 MAXMIN32 + 1, MAXMIN64, KM_SLEEP)) == NULL) {
4538 4538 cmn_err(CE_PANIC,
4539 4539 "ip_ddi_init: ip_minor_arena_la creation failed\n");
4540 4540 }
4541 4541 #else
4542 4542 if ((ip_minor_arena_sa = inet_minor_create("ip_minor_arena_sa",
4543 4543 INET_MIN_DEV + 2, MAXMIN, KM_SLEEP)) == NULL) {
4544 4544 cmn_err(CE_PANIC,
4545 4545 "ip_ddi_init: ip_minor_arena_sa creation failed\n");
4546 4546 }
4547 4547 #endif
4548 4548 ip_poll_normal_ticks = MSEC_TO_TICK_ROUNDUP(ip_poll_normal_ms);
4549 4549
4550 4550 ipcl_g_init();
4551 4551 ip_ire_g_init();
4552 4552 ip_net_g_init();
4553 4553
4554 4554 #ifdef DEBUG
4555 4555 tsd_create(&ip_thread_data, ip_thread_exit);
4556 4556 rw_init(&ip_thread_rwlock, NULL, RW_DEFAULT, NULL);
4557 4557 list_create(&ip_thread_list, sizeof (th_hash_t),
4558 4558 offsetof(th_hash_t, thh_link));
4559 4559 #endif
4560 4560 ipsec_policy_g_init();
4561 4561 tcp_ddi_g_init();
4562 4562 sctp_ddi_g_init();
4563 4563 dce_g_init();
4564 4564
4565 4565 /*
4566 4566 * We want to be informed each time a stack is created or
4567 4567 * destroyed in the kernel, so we can maintain the
4568 4568 * set of udp_stack_t's.
4569 4569 */
4570 4570 netstack_register(NS_IP, ip_stack_init, ip_stack_shutdown,
4571 4571 ip_stack_fini);
4572 4572
4573 4573 tnet_init();
4574 4574
4575 4575 udp_ddi_g_init();
4576 4576 rts_ddi_g_init();
4577 4577 icmp_ddi_g_init();
4578 4578 ilb_ddi_g_init();
4579 4579
4580 4580 /* This needs to be called after all transports are initialized. */
4581 4581 mutex_enter(&cpu_lock);
4582 4582 register_cpu_setup_func(ip_tp_cpu_update, NULL);
4583 4583 mutex_exit(&cpu_lock);
4584 4584 }
4585 4585
4586 4586 /*
4587 4587 * Initialize the IP stack instance.
4588 4588 */
4589 4589 static void *
4590 4590 ip_stack_init(netstackid_t stackid, netstack_t *ns)
4591 4591 {
4592 4592 ip_stack_t *ipst;
4593 4593 size_t arrsz;
4594 4594 major_t major;
4595 4595
4596 4596 #ifdef NS_DEBUG
4597 4597 printf("ip_stack_init(stack %d)\n", stackid);
4598 4598 #endif
4599 4599
4600 4600 ipst = (ip_stack_t *)kmem_zalloc(sizeof (*ipst), KM_SLEEP);
4601 4601 ipst->ips_netstack = ns;
4602 4602
4603 4603 ipst->ips_ill_g_heads = kmem_zalloc(sizeof (ill_g_head_t) * MAX_G_HEADS,
4604 4604 KM_SLEEP);
4605 4605 ipst->ips_phyint_g_list = kmem_zalloc(sizeof (phyint_list_t),
4606 4606 KM_SLEEP);
4607 4607 ipst->ips_ndp4 = kmem_zalloc(sizeof (ndp_g_t), KM_SLEEP);
4608 4608 ipst->ips_ndp6 = kmem_zalloc(sizeof (ndp_g_t), KM_SLEEP);
4609 4609 mutex_init(&ipst->ips_ndp4->ndp_g_lock, NULL, MUTEX_DEFAULT, NULL);
4610 4610 mutex_init(&ipst->ips_ndp6->ndp_g_lock, NULL, MUTEX_DEFAULT, NULL);
4611 4611
4612 4612 mutex_init(&ipst->ips_igmp_timer_lock, NULL, MUTEX_DEFAULT, NULL);
4613 4613 ipst->ips_igmp_deferred_next = INFINITY;
4614 4614 mutex_init(&ipst->ips_mld_timer_lock, NULL, MUTEX_DEFAULT, NULL);
4615 4615 ipst->ips_mld_deferred_next = INFINITY;
4616 4616 mutex_init(&ipst->ips_igmp_slowtimeout_lock, NULL, MUTEX_DEFAULT, NULL);
4617 4617 mutex_init(&ipst->ips_mld_slowtimeout_lock, NULL, MUTEX_DEFAULT, NULL);
4618 4618 mutex_init(&ipst->ips_ip_mi_lock, NULL, MUTEX_DEFAULT, NULL);
4619 4619 mutex_init(&ipst->ips_ip_addr_avail_lock, NULL, MUTEX_DEFAULT, NULL);
4620 4620 rw_init(&ipst->ips_ill_g_lock, NULL, RW_DEFAULT, NULL);
4621 4621 rw_init(&ipst->ips_ill_g_usesrc_lock, NULL, RW_DEFAULT, NULL);
4622 4622
4623 4623 ipcl_init(ipst);
4624 4624 ip_ire_init(ipst);
4625 4625 ip6_asp_init(ipst);
4626 4626 ipif_init(ipst);
4627 4627 conn_drain_init(ipst);
4628 4628 ip_mrouter_stack_init(ipst);
4629 4629 dce_stack_init(ipst);
4630 4630
4631 4631 ipst->ips_ip_multirt_log_interval = 1000;
4632 4632
4633 4633 ipst->ips_ill_index = 1;
4634 4634
4635 4635 ipst->ips_saved_ip_forwarding = -1;
4636 4636 ipst->ips_reg_vif_num = ALL_VIFS; /* Index to Register vif */
4637 4637
4638 4638 arrsz = ip_propinfo_count * sizeof (mod_prop_info_t);
4639 4639 ipst->ips_propinfo_tbl = (mod_prop_info_t *)kmem_alloc(arrsz, KM_SLEEP);
4640 4640 bcopy(ip_propinfo_tbl, ipst->ips_propinfo_tbl, arrsz);
4641 4641
4642 4642 ipst->ips_ip_mibkp = ip_kstat_init(stackid, ipst);
4643 4643 ipst->ips_icmp_mibkp = icmp_kstat_init(stackid);
4644 4644 ipst->ips_ip_kstat = ip_kstat2_init(stackid, &ipst->ips_ip_statistics);
4645 4645 ipst->ips_ip6_kstat =
4646 4646 ip6_kstat_init(stackid, &ipst->ips_ip6_statistics);
4647 4647
4648 4648 ipst->ips_ip_src_id = 1;
4649 4649 rw_init(&ipst->ips_srcid_lock, NULL, RW_DEFAULT, NULL);
4650 4650
4651 4651 ipst->ips_src_generation = SRC_GENERATION_INITIAL;
4652 4652
4653 4653 ip_net_init(ipst, ns);
4654 4654 ipv4_hook_init(ipst);
4655 4655 ipv6_hook_init(ipst);
4656 4656 arp_hook_init(ipst);
4657 4657 ipmp_init(ipst);
4658 4658 ipobs_init(ipst);
4659 4659
4660 4660 /*
4661 4661 * Create the taskq dispatcher thread and initialize related stuff.
4662 4662 */
4663 4663 mutex_init(&ipst->ips_capab_taskq_lock, NULL, MUTEX_DEFAULT, NULL);
4664 4664 cv_init(&ipst->ips_capab_taskq_cv, NULL, CV_DEFAULT, NULL);
4665 4665 ipst->ips_capab_taskq_thread = thread_create(NULL, 0,
4666 4666 ill_taskq_dispatch, ipst, 0, &p0, TS_RUN, minclsyspri);
4667 4667
4668 4668 major = mod_name_to_major(INET_NAME);
4669 4669 (void) ldi_ident_from_major(major, &ipst->ips_ldi_ident);
4670 4670 return (ipst);
4671 4671 }
4672 4672
4673 4673 /*
4674 4674 * Allocate and initialize a DLPI template of the specified length. (May be
4675 4675 * called as writer.)
4676 4676 */
4677 4677 mblk_t *
4678 4678 ip_dlpi_alloc(size_t len, t_uscalar_t prim)
4679 4679 {
4680 4680 mblk_t *mp;
4681 4681
4682 4682 mp = allocb(len, BPRI_MED);
4683 4683 if (!mp)
4684 4684 return (NULL);
4685 4685
4686 4686 /*
4687 4687 * DLPIv2 says that DL_INFO_REQ and DL_TOKEN_REQ (the latter
4688 4688 * of which we don't seem to use) are sent with M_PCPROTO, and
4689 4689 * that other DLPI are M_PROTO.
4690 4690 */
4691 4691 if (prim == DL_INFO_REQ) {
4692 4692 mp->b_datap->db_type = M_PCPROTO;
4693 4693 } else {
4694 4694 mp->b_datap->db_type = M_PROTO;
4695 4695 }
4696 4696
4697 4697 mp->b_wptr = mp->b_rptr + len;
4698 4698 bzero(mp->b_rptr, len);
4699 4699 ((dl_unitdata_req_t *)mp->b_rptr)->dl_primitive = prim;
4700 4700 return (mp);
4701 4701 }
4702 4702
4703 4703 /*
4704 4704 * Allocate and initialize a DLPI notification. (May be called as writer.)
4705 4705 */
4706 4706 mblk_t *
4707 4707 ip_dlnotify_alloc(uint_t notification, uint_t data)
4708 4708 {
4709 4709 dl_notify_ind_t *notifyp;
4710 4710 mblk_t *mp;
4711 4711
4712 4712 if ((mp = ip_dlpi_alloc(DL_NOTIFY_IND_SIZE, DL_NOTIFY_IND)) == NULL)
4713 4713 return (NULL);
4714 4714
4715 4715 notifyp = (dl_notify_ind_t *)mp->b_rptr;
4716 4716 notifyp->dl_notification = notification;
4717 4717 notifyp->dl_data = data;
4718 4718 return (mp);
4719 4719 }
4720 4720
4721 4721 mblk_t *
4722 4722 ip_dlnotify_alloc2(uint_t notification, uint_t data1, uint_t data2)
4723 4723 {
4724 4724 dl_notify_ind_t *notifyp;
4725 4725 mblk_t *mp;
4726 4726
4727 4727 if ((mp = ip_dlpi_alloc(DL_NOTIFY_IND_SIZE, DL_NOTIFY_IND)) == NULL)
4728 4728 return (NULL);
4729 4729
4730 4730 notifyp = (dl_notify_ind_t *)mp->b_rptr;
4731 4731 notifyp->dl_notification = notification;
4732 4732 notifyp->dl_data1 = data1;
4733 4733 notifyp->dl_data2 = data2;
4734 4734 return (mp);
4735 4735 }
4736 4736
4737 4737 /*
4738 4738 * Debug formatting routine. Returns a character string representation of the
4739 4739 * addr in buf, of the form xxx.xxx.xxx.xxx. This routine takes the address
4740 4740 * in the form of a ipaddr_t and calls ip_dot_saddr with a pointer.
4741 4741 *
4742 4742 * Once the ndd table-printing interfaces are removed, this can be changed to
4743 4743 * standard dotted-decimal form.
4744 4744 */
4745 4745 char *
4746 4746 ip_dot_addr(ipaddr_t addr, char *buf)
4747 4747 {
4748 4748 uint8_t *ap = (uint8_t *)&addr;
4749 4749
4750 4750 (void) mi_sprintf(buf, "%03d.%03d.%03d.%03d",
4751 4751 ap[0] & 0xFF, ap[1] & 0xFF, ap[2] & 0xFF, ap[3] & 0xFF);
4752 4752 return (buf);
4753 4753 }
4754 4754
4755 4755 /*
4756 4756 * Write the given MAC address as a printable string in the usual colon-
4757 4757 * separated format.
4758 4758 */
4759 4759 const char *
4760 4760 mac_colon_addr(const uint8_t *addr, size_t alen, char *buf, size_t buflen)
4761 4761 {
4762 4762 char *bp;
4763 4763
4764 4764 if (alen == 0 || buflen < 4)
4765 4765 return ("?");
4766 4766 bp = buf;
4767 4767 for (;;) {
4768 4768 /*
4769 4769 * If there are more MAC address bytes available, but we won't
4770 4770 * have any room to print them, then add "..." to the string
4771 4771 * instead. See below for the 'magic number' explanation.
4772 4772 */
4773 4773 if ((alen == 2 && buflen < 6) || (alen > 2 && buflen < 7)) {
4774 4774 (void) strcpy(bp, "...");
4775 4775 break;
4776 4776 }
4777 4777 (void) sprintf(bp, "%02x", *addr++);
4778 4778 bp += 2;
4779 4779 if (--alen == 0)
4780 4780 break;
4781 4781 *bp++ = ':';
4782 4782 buflen -= 3;
4783 4783 /*
4784 4784 * At this point, based on the first 'if' statement above,
4785 4785 * either alen == 1 and buflen >= 3, or alen > 1 and
4786 4786 * buflen >= 4. The first case leaves room for the final "xx"
4787 4787 * number and trailing NUL byte. The second leaves room for at
4788 4788 * least "...". Thus the apparently 'magic' numbers chosen for
4789 4789 * that statement.
4790 4790 */
4791 4791 }
4792 4792 return (buf);
4793 4793 }
4794 4794
4795 4795 /*
4796 4796 * Called when it is conceptually a ULP that would sent the packet
4797 4797 * e.g., port unreachable and protocol unreachable. Check that the packet
4798 4798 * would have passed the IPsec global policy before sending the error.
4799 4799 *
4800 4800 * Send an ICMP error after patching up the packet appropriately.
4801 4801 * Uses ip_drop_input and bumps the appropriate MIB.
4802 4802 */
4803 4803 void
4804 4804 ip_fanout_send_icmp_v4(mblk_t *mp, uint_t icmp_type, uint_t icmp_code,
4805 4805 ip_recv_attr_t *ira)
4806 4806 {
4807 4807 ipha_t *ipha;
4808 4808 boolean_t secure;
4809 4809 ill_t *ill = ira->ira_ill;
4810 4810 ip_stack_t *ipst = ill->ill_ipst;
4811 4811 netstack_t *ns = ipst->ips_netstack;
4812 4812 ipsec_stack_t *ipss = ns->netstack_ipsec;
4813 4813
4814 4814 secure = ira->ira_flags & IRAF_IPSEC_SECURE;
4815 4815
4816 4816 /*
4817 4817 * We are generating an icmp error for some inbound packet.
4818 4818 * Called from all ip_fanout_(udp, tcp, proto) functions.
4819 4819 * Before we generate an error, check with global policy
4820 4820 * to see whether this is allowed to enter the system. As
4821 4821 * there is no "conn", we are checking with global policy.
4822 4822 */
4823 4823 ipha = (ipha_t *)mp->b_rptr;
4824 4824 if (secure || ipss->ipsec_inbound_v4_policy_present) {
4825 4825 mp = ipsec_check_global_policy(mp, NULL, ipha, NULL, ira, ns);
4826 4826 if (mp == NULL)
4827 4827 return;
4828 4828 }
4829 4829
4830 4830 /* We never send errors for protocols that we do implement */
4831 4831 if (ira->ira_protocol == IPPROTO_ICMP ||
4832 4832 ira->ira_protocol == IPPROTO_IGMP) {
4833 4833 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
4834 4834 ip_drop_input("ip_fanout_send_icmp_v4", mp, ill);
4835 4835 freemsg(mp);
4836 4836 return;
4837 4837 }
4838 4838 /*
4839 4839 * Have to correct checksum since
4840 4840 * the packet might have been
4841 4841 * fragmented and the reassembly code in ip_rput
4842 4842 * does not restore the IP checksum.
4843 4843 */
4844 4844 ipha->ipha_hdr_checksum = 0;
4845 4845 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
4846 4846
4847 4847 switch (icmp_type) {
4848 4848 case ICMP_DEST_UNREACHABLE:
4849 4849 switch (icmp_code) {
4850 4850 case ICMP_PROTOCOL_UNREACHABLE:
4851 4851 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInUnknownProtos);
4852 4852 ip_drop_input("ipIfStatsInUnknownProtos", mp, ill);
4853 4853 break;
4854 4854 case ICMP_PORT_UNREACHABLE:
4855 4855 BUMP_MIB(ill->ill_ip_mib, udpIfStatsNoPorts);
4856 4856 ip_drop_input("ipIfStatsNoPorts", mp, ill);
4857 4857 break;
4858 4858 }
4859 4859
4860 4860 icmp_unreachable(mp, icmp_code, ira);
4861 4861 break;
4862 4862 default:
4863 4863 #ifdef DEBUG
4864 4864 panic("ip_fanout_send_icmp_v4: wrong type");
4865 4865 /*NOTREACHED*/
4866 4866 #else
4867 4867 freemsg(mp);
4868 4868 break;
4869 4869 #endif
4870 4870 }
4871 4871 }
4872 4872
4873 4873 /*
4874 4874 * Used to send an ICMP error message when a packet is received for
4875 4875 * a protocol that is not supported. The mblk passed as argument
4876 4876 * is consumed by this function.
4877 4877 */
4878 4878 void
4879 4879 ip_proto_not_sup(mblk_t *mp, ip_recv_attr_t *ira)
4880 4880 {
4881 4881 ipha_t *ipha;
4882 4882
4883 4883 ipha = (ipha_t *)mp->b_rptr;
4884 4884 if (ira->ira_flags & IRAF_IS_IPV4) {
4885 4885 ASSERT(IPH_HDR_VERSION(ipha) == IP_VERSION);
4886 4886 ip_fanout_send_icmp_v4(mp, ICMP_DEST_UNREACHABLE,
4887 4887 ICMP_PROTOCOL_UNREACHABLE, ira);
4888 4888 } else {
4889 4889 ASSERT(IPH_HDR_VERSION(ipha) == IPV6_VERSION);
4890 4890 ip_fanout_send_icmp_v6(mp, ICMP6_PARAM_PROB,
4891 4891 ICMP6_PARAMPROB_NEXTHEADER, ira);
4892 4892 }
4893 4893 }
4894 4894
4895 4895 /*
4896 4896 * Deliver a rawip packet to the given conn, possibly applying ipsec policy.
4897 4897 * Handles IPv4 and IPv6.
4898 4898 * We are responsible for disposing of mp, such as by freemsg() or putnext()
4899 4899 * Caller is responsible for dropping references to the conn.
4900 4900 */
4901 4901 void
4902 4902 ip_fanout_proto_conn(conn_t *connp, mblk_t *mp, ipha_t *ipha, ip6_t *ip6h,
4903 4903 ip_recv_attr_t *ira)
4904 4904 {
4905 4905 ill_t *ill = ira->ira_ill;
4906 4906 ip_stack_t *ipst = ill->ill_ipst;
4907 4907 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
4908 4908 boolean_t secure;
4909 4909 uint_t protocol = ira->ira_protocol;
4910 4910 iaflags_t iraflags = ira->ira_flags;
4911 4911 queue_t *rq;
4912 4912
4913 4913 secure = iraflags & IRAF_IPSEC_SECURE;
4914 4914
4915 4915 rq = connp->conn_rq;
4916 4916 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld : !canputnext(rq)) {
4917 4917 switch (protocol) {
4918 4918 case IPPROTO_ICMPV6:
4919 4919 BUMP_MIB(ill->ill_icmp6_mib, ipv6IfIcmpInOverflows);
4920 4920 break;
4921 4921 case IPPROTO_ICMP:
4922 4922 BUMP_MIB(&ipst->ips_icmp_mib, icmpInOverflows);
4923 4923 break;
4924 4924 default:
4925 4925 BUMP_MIB(ill->ill_ip_mib, rawipIfStatsInOverflows);
4926 4926 break;
4927 4927 }
4928 4928 freemsg(mp);
4929 4929 return;
4930 4930 }
4931 4931
4932 4932 ASSERT(!(IPCL_IS_IPTUN(connp)));
4933 4933
4934 4934 if (((iraflags & IRAF_IS_IPV4) ?
4935 4935 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
4936 4936 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
4937 4937 secure) {
4938 4938 mp = ipsec_check_inbound_policy(mp, connp, ipha,
4939 4939 ip6h, ira);
4940 4940 if (mp == NULL) {
4941 4941 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
4942 4942 /* Note that mp is NULL */
4943 4943 ip_drop_input("ipIfStatsInDiscards", mp, ill);
4944 4944 return;
4945 4945 }
4946 4946 }
4947 4947
4948 4948 if (iraflags & IRAF_ICMP_ERROR) {
4949 4949 (connp->conn_recvicmp)(connp, mp, NULL, ira);
4950 4950 } else {
4951 4951 ill_t *rill = ira->ira_rill;
4952 4952
4953 4953 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
4954 4954 ira->ira_ill = ira->ira_rill = NULL;
4955 4955 /* Send it upstream */
4956 4956 (connp->conn_recv)(connp, mp, NULL, ira);
4957 4957 ira->ira_ill = ill;
4958 4958 ira->ira_rill = rill;
4959 4959 }
4960 4960 }
4961 4961
4962 4962 /*
4963 4963 * Handle protocols with which IP is less intimate. There
4964 4964 * can be more than one stream bound to a particular
4965 4965 * protocol. When this is the case, normally each one gets a copy
4966 4966 * of any incoming packets.
4967 4967 *
4968 4968 * IPsec NOTE :
4969 4969 *
4970 4970 * Don't allow a secure packet going up a non-secure connection.
4971 4971 * We don't allow this because
4972 4972 *
4973 4973 * 1) Reply might go out in clear which will be dropped at
4974 4974 * the sending side.
4975 4975 * 2) If the reply goes out in clear it will give the
4976 4976 * adversary enough information for getting the key in
4977 4977 * most of the cases.
4978 4978 *
4979 4979 * Moreover getting a secure packet when we expect clear
4980 4980 * implies that SA's were added without checking for
4981 4981 * policy on both ends. This should not happen once ISAKMP
4982 4982 * is used to negotiate SAs as SAs will be added only after
4983 4983 * verifying the policy.
4984 4984 *
4985 4985 * Zones notes:
4986 4986 * Earlier in ip_input on a system with multiple shared-IP zones we
4987 4987 * duplicate the multicast and broadcast packets and send them up
4988 4988 * with each explicit zoneid that exists on that ill.
4989 4989 * This means that here we can match the zoneid with SO_ALLZONES being special.
4990 4990 */
4991 4991 void
4992 4992 ip_fanout_proto_v4(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
4993 4993 {
4994 4994 mblk_t *mp1;
4995 4995 ipaddr_t laddr;
4996 4996 conn_t *connp, *first_connp, *next_connp;
4997 4997 connf_t *connfp;
4998 4998 ill_t *ill = ira->ira_ill;
4999 4999 ip_stack_t *ipst = ill->ill_ipst;
5000 5000
5001 5001 laddr = ipha->ipha_dst;
5002 5002
5003 5003 connfp = &ipst->ips_ipcl_proto_fanout_v4[ira->ira_protocol];
5004 5004 mutex_enter(&connfp->connf_lock);
5005 5005 connp = connfp->connf_head;
5006 5006 for (connp = connfp->connf_head; connp != NULL;
5007 5007 connp = connp->conn_next) {
5008 5008 /* Note: IPCL_PROTO_MATCH includes conn_wantpacket */
5009 5009 if (IPCL_PROTO_MATCH(connp, ira, ipha) &&
5010 5010 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5011 5011 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp))) {
5012 5012 break;
5013 5013 }
5014 5014 }
5015 5015
5016 5016 if (connp == NULL) {
5017 5017 /*
5018 5018 * No one bound to these addresses. Is
5019 5019 * there a client that wants all
5020 5020 * unclaimed datagrams?
5021 5021 */
5022 5022 mutex_exit(&connfp->connf_lock);
5023 5023 ip_fanout_send_icmp_v4(mp, ICMP_DEST_UNREACHABLE,
5024 5024 ICMP_PROTOCOL_UNREACHABLE, ira);
5025 5025 return;
5026 5026 }
5027 5027
5028 5028 ASSERT(IPCL_IS_NONSTR(connp) || connp->conn_rq != NULL);
5029 5029
5030 5030 CONN_INC_REF(connp);
5031 5031 first_connp = connp;
5032 5032 connp = connp->conn_next;
5033 5033
5034 5034 for (;;) {
5035 5035 while (connp != NULL) {
5036 5036 /* Note: IPCL_PROTO_MATCH includes conn_wantpacket */
5037 5037 if (IPCL_PROTO_MATCH(connp, ira, ipha) &&
5038 5038 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5039 5039 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5040 5040 ira, connp)))
5041 5041 break;
5042 5042 connp = connp->conn_next;
5043 5043 }
5044 5044
5045 5045 if (connp == NULL) {
5046 5046 /* No more interested clients */
5047 5047 connp = first_connp;
5048 5048 break;
5049 5049 }
5050 5050 if (((mp1 = dupmsg(mp)) == NULL) &&
5051 5051 ((mp1 = copymsg(mp)) == NULL)) {
5052 5052 /* Memory allocation failed */
5053 5053 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5054 5054 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5055 5055 connp = first_connp;
5056 5056 break;
5057 5057 }
5058 5058
5059 5059 CONN_INC_REF(connp);
5060 5060 mutex_exit(&connfp->connf_lock);
5061 5061
5062 5062 ip_fanout_proto_conn(connp, mp1, (ipha_t *)mp1->b_rptr, NULL,
5063 5063 ira);
5064 5064
5065 5065 mutex_enter(&connfp->connf_lock);
5066 5066 /* Follow the next pointer before releasing the conn. */
5067 5067 next_connp = connp->conn_next;
5068 5068 CONN_DEC_REF(connp);
5069 5069 connp = next_connp;
5070 5070 }
5071 5071
5072 5072 /* Last one. Send it upstream. */
5073 5073 mutex_exit(&connfp->connf_lock);
5074 5074
5075 5075 ip_fanout_proto_conn(connp, mp, ipha, NULL, ira);
5076 5076
5077 5077 CONN_DEC_REF(connp);
5078 5078 }
5079 5079
5080 5080 /*
5081 5081 * If we have a IPsec NAT-Traversal packet, strip the zero-SPI or
5082 5082 * pass it along to ESP if the SPI is non-zero. Returns the mblk if the mblk
5083 5083 * is not consumed.
5084 5084 *
5085 5085 * One of three things can happen, all of which affect the passed-in mblk:
5086 5086 *
5087 5087 * 1.) The packet is stock UDP and gets its zero-SPI stripped. Return mblk..
5088 5088 *
5089 5089 * 2.) The packet is ESP-in-UDP, gets transformed into an equivalent
5090 5090 * ESP packet, and is passed along to ESP for consumption. Return NULL.
5091 5091 *
5092 5092 * 3.) The packet is an ESP-in-UDP Keepalive. Drop it and return NULL.
5093 5093 */
5094 5094 mblk_t *
5095 5095 zero_spi_check(mblk_t *mp, ip_recv_attr_t *ira)
5096 5096 {
5097 5097 int shift, plen, iph_len;
5098 5098 ipha_t *ipha;
5099 5099 udpha_t *udpha;
5100 5100 uint32_t *spi;
5101 5101 uint32_t esp_ports;
5102 5102 uint8_t *orptr;
5103 5103 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
5104 5104 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
5105 5105
5106 5106 ipha = (ipha_t *)mp->b_rptr;
5107 5107 iph_len = ira->ira_ip_hdr_length;
5108 5108 plen = ira->ira_pktlen;
5109 5109
5110 5110 if (plen - iph_len - sizeof (udpha_t) < sizeof (uint32_t)) {
5111 5111 /*
5112 5112 * Most likely a keepalive for the benefit of an intervening
5113 5113 * NAT. These aren't for us, per se, so drop it.
5114 5114 *
5115 5115 * RFC 3947/8 doesn't say for sure what to do for 2-3
5116 5116 * byte packets (keepalives are 1-byte), but we'll drop them
5117 5117 * also.
5118 5118 */
5119 5119 ip_drop_packet(mp, B_TRUE, ira->ira_ill,
5120 5120 DROPPER(ipss, ipds_esp_nat_t_ka), &ipss->ipsec_dropper);
5121 5121 return (NULL);
5122 5122 }
5123 5123
5124 5124 if (MBLKL(mp) < iph_len + sizeof (udpha_t) + sizeof (*spi)) {
5125 5125 /* might as well pull it all up - it might be ESP. */
5126 5126 if (!pullupmsg(mp, -1)) {
5127 5127 ip_drop_packet(mp, B_TRUE, ira->ira_ill,
5128 5128 DROPPER(ipss, ipds_esp_nomem),
5129 5129 &ipss->ipsec_dropper);
5130 5130 return (NULL);
5131 5131 }
5132 5132
5133 5133 ipha = (ipha_t *)mp->b_rptr;
5134 5134 }
5135 5135 spi = (uint32_t *)(mp->b_rptr + iph_len + sizeof (udpha_t));
5136 5136 if (*spi == 0) {
5137 5137 /* UDP packet - remove 0-spi. */
5138 5138 shift = sizeof (uint32_t);
5139 5139 } else {
5140 5140 /* ESP-in-UDP packet - reduce to ESP. */
5141 5141 ipha->ipha_protocol = IPPROTO_ESP;
5142 5142 shift = sizeof (udpha_t);
5143 5143 }
5144 5144
5145 5145 /* Fix IP header */
5146 5146 ira->ira_pktlen = (plen - shift);
5147 5147 ipha->ipha_length = htons(ira->ira_pktlen);
5148 5148 ipha->ipha_hdr_checksum = 0;
5149 5149
5150 5150 orptr = mp->b_rptr;
5151 5151 mp->b_rptr += shift;
5152 5152
5153 5153 udpha = (udpha_t *)(orptr + iph_len);
5154 5154 if (*spi == 0) {
5155 5155 ASSERT((uint8_t *)ipha == orptr);
5156 5156 udpha->uha_length = htons(plen - shift - iph_len);
5157 5157 iph_len += sizeof (udpha_t); /* For the call to ovbcopy(). */
5158 5158 esp_ports = 0;
5159 5159 } else {
5160 5160 esp_ports = *((uint32_t *)udpha);
5161 5161 ASSERT(esp_ports != 0);
5162 5162 }
5163 5163 ovbcopy(orptr, orptr + shift, iph_len);
5164 5164 if (esp_ports != 0) /* Punt up for ESP processing. */ {
5165 5165 ipha = (ipha_t *)(orptr + shift);
5166 5166
5167 5167 ira->ira_flags |= IRAF_ESP_UDP_PORTS;
5168 5168 ira->ira_esp_udp_ports = esp_ports;
5169 5169 ip_fanout_v4(mp, ipha, ira);
5170 5170 return (NULL);
5171 5171 }
5172 5172 return (mp);
5173 5173 }
5174 5174
5175 5175 /*
5176 5176 * Deliver a udp packet to the given conn, possibly applying ipsec policy.
5177 5177 * Handles IPv4 and IPv6.
5178 5178 * We are responsible for disposing of mp, such as by freemsg() or putnext()
5179 5179 * Caller is responsible for dropping references to the conn.
5180 5180 */
5181 5181 void
5182 5182 ip_fanout_udp_conn(conn_t *connp, mblk_t *mp, ipha_t *ipha, ip6_t *ip6h,
5183 5183 ip_recv_attr_t *ira)
5184 5184 {
5185 5185 ill_t *ill = ira->ira_ill;
5186 5186 ip_stack_t *ipst = ill->ill_ipst;
5187 5187 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
5188 5188 boolean_t secure;
5189 5189 iaflags_t iraflags = ira->ira_flags;
5190 5190
5191 5191 secure = iraflags & IRAF_IPSEC_SECURE;
5192 5192
5193 5193 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld :
5194 5194 !canputnext(connp->conn_rq)) {
5195 5195 BUMP_MIB(ill->ill_ip_mib, udpIfStatsInOverflows);
5196 5196 freemsg(mp);
5197 5197 return;
5198 5198 }
5199 5199
5200 5200 if (((iraflags & IRAF_IS_IPV4) ?
5201 5201 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
5202 5202 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
5203 5203 secure) {
5204 5204 mp = ipsec_check_inbound_policy(mp, connp, ipha,
5205 5205 ip6h, ira);
5206 5206 if (mp == NULL) {
5207 5207 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5208 5208 /* Note that mp is NULL */
5209 5209 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5210 5210 return;
5211 5211 }
5212 5212 }
5213 5213
5214 5214 /*
5215 5215 * Since this code is not used for UDP unicast we don't need a NAT_T
5216 5216 * check. Only ip_fanout_v4 has that check.
5217 5217 */
5218 5218 if (ira->ira_flags & IRAF_ICMP_ERROR) {
5219 5219 (connp->conn_recvicmp)(connp, mp, NULL, ira);
5220 5220 } else {
5221 5221 ill_t *rill = ira->ira_rill;
5222 5222
5223 5223 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
5224 5224 ira->ira_ill = ira->ira_rill = NULL;
5225 5225 /* Send it upstream */
5226 5226 (connp->conn_recv)(connp, mp, NULL, ira);
5227 5227 ira->ira_ill = ill;
5228 5228 ira->ira_rill = rill;
5229 5229 }
5230 5230 }
5231 5231
5232 5232 /*
5233 5233 * Fanout for UDP packets that are multicast or broadcast, and ICMP errors.
5234 5234 * (Unicast fanout is handled in ip_input_v4.)
5235 5235 *
5236 5236 * If SO_REUSEADDR is set all multicast and broadcast packets
5237 5237 * will be delivered to all conns bound to the same port.
5238 5238 *
5239 5239 * If there is at least one matching AF_INET receiver, then we will
5240 5240 * ignore any AF_INET6 receivers.
5241 5241 * In the special case where an AF_INET socket binds to 0.0.0.0/<port> and an
5242 5242 * AF_INET6 socket binds to ::/<port>, only the AF_INET socket receives the IPv4
5243 5243 * packets.
5244 5244 *
5245 5245 * Zones notes:
5246 5246 * Earlier in ip_input on a system with multiple shared-IP zones we
5247 5247 * duplicate the multicast and broadcast packets and send them up
5248 5248 * with each explicit zoneid that exists on that ill.
5249 5249 * This means that here we can match the zoneid with SO_ALLZONES being special.
5250 5250 */
5251 5251 void
5252 5252 ip_fanout_udp_multi_v4(mblk_t *mp, ipha_t *ipha, uint16_t lport, uint16_t fport,
5253 5253 ip_recv_attr_t *ira)
5254 5254 {
5255 5255 ipaddr_t laddr;
5256 5256 in6_addr_t v6faddr;
5257 5257 conn_t *connp;
5258 5258 connf_t *connfp;
5259 5259 ipaddr_t faddr;
5260 5260 ill_t *ill = ira->ira_ill;
5261 5261 ip_stack_t *ipst = ill->ill_ipst;
5262 5262
5263 5263 ASSERT(ira->ira_flags & (IRAF_MULTIBROADCAST|IRAF_ICMP_ERROR));
5264 5264
5265 5265 laddr = ipha->ipha_dst;
5266 5266 faddr = ipha->ipha_src;
5267 5267
5268 5268 connfp = &ipst->ips_ipcl_udp_fanout[IPCL_UDP_HASH(lport, ipst)];
5269 5269 mutex_enter(&connfp->connf_lock);
5270 5270 connp = connfp->connf_head;
5271 5271
5272 5272 /*
5273 5273 * If SO_REUSEADDR has been set on the first we send the
5274 5274 * packet to all clients that have joined the group and
5275 5275 * match the port.
5276 5276 */
5277 5277 while (connp != NULL) {
5278 5278 if ((IPCL_UDP_MATCH(connp, lport, laddr, fport, faddr)) &&
5279 5279 conn_wantpacket(connp, ira, ipha) &&
5280 5280 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5281 5281 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp)))
5282 5282 break;
5283 5283 connp = connp->conn_next;
5284 5284 }
5285 5285
5286 5286 if (connp == NULL)
5287 5287 goto notfound;
5288 5288
5289 5289 CONN_INC_REF(connp);
5290 5290
5291 5291 if (connp->conn_reuseaddr) {
5292 5292 conn_t *first_connp = connp;
5293 5293 conn_t *next_connp;
5294 5294 mblk_t *mp1;
5295 5295
5296 5296 connp = connp->conn_next;
5297 5297 for (;;) {
5298 5298 while (connp != NULL) {
5299 5299 if (IPCL_UDP_MATCH(connp, lport, laddr,
5300 5300 fport, faddr) &&
5301 5301 conn_wantpacket(connp, ira, ipha) &&
5302 5302 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5303 5303 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5304 5304 ira, connp)))
5305 5305 break;
5306 5306 connp = connp->conn_next;
5307 5307 }
5308 5308 if (connp == NULL) {
5309 5309 /* No more interested clients */
5310 5310 connp = first_connp;
5311 5311 break;
5312 5312 }
5313 5313 if (((mp1 = dupmsg(mp)) == NULL) &&
5314 5314 ((mp1 = copymsg(mp)) == NULL)) {
5315 5315 /* Memory allocation failed */
5316 5316 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5317 5317 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5318 5318 connp = first_connp;
5319 5319 break;
5320 5320 }
5321 5321 CONN_INC_REF(connp);
5322 5322 mutex_exit(&connfp->connf_lock);
5323 5323
5324 5324 IP_STAT(ipst, ip_udp_fanmb);
5325 5325 ip_fanout_udp_conn(connp, mp1, (ipha_t *)mp1->b_rptr,
5326 5326 NULL, ira);
5327 5327 mutex_enter(&connfp->connf_lock);
5328 5328 /* Follow the next pointer before releasing the conn */
5329 5329 next_connp = connp->conn_next;
5330 5330 CONN_DEC_REF(connp);
5331 5331 connp = next_connp;
5332 5332 }
5333 5333 }
5334 5334
5335 5335 /* Last one. Send it upstream. */
5336 5336 mutex_exit(&connfp->connf_lock);
5337 5337 IP_STAT(ipst, ip_udp_fanmb);
5338 5338 ip_fanout_udp_conn(connp, mp, ipha, NULL, ira);
5339 5339 CONN_DEC_REF(connp);
5340 5340 return;
5341 5341
5342 5342 notfound:
5343 5343 mutex_exit(&connfp->connf_lock);
5344 5344 /*
5345 5345 * IPv6 endpoints bound to multicast IPv4-mapped addresses
5346 5346 * have already been matched above, since they live in the IPv4
5347 5347 * fanout tables. This implies we only need to
5348 5348 * check for IPv6 in6addr_any endpoints here.
5349 5349 * Thus we compare using ipv6_all_zeros instead of the destination
5350 5350 * address, except for the multicast group membership lookup which
5351 5351 * uses the IPv4 destination.
5352 5352 */
5353 5353 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_src, &v6faddr);
5354 5354 connfp = &ipst->ips_ipcl_udp_fanout[IPCL_UDP_HASH(lport, ipst)];
5355 5355 mutex_enter(&connfp->connf_lock);
5356 5356 connp = connfp->connf_head;
5357 5357 /*
5358 5358 * IPv4 multicast packet being delivered to an AF_INET6
5359 5359 * in6addr_any endpoint.
5360 5360 * Need to check conn_wantpacket(). Note that we use conn_wantpacket()
5361 5361 * and not conn_wantpacket_v6() since any multicast membership is
5362 5362 * for an IPv4-mapped multicast address.
5363 5363 */
5364 5364 while (connp != NULL) {
5365 5365 if (IPCL_UDP_MATCH_V6(connp, lport, ipv6_all_zeros,
5366 5366 fport, v6faddr) &&
5367 5367 conn_wantpacket(connp, ira, ipha) &&
5368 5368 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5369 5369 tsol_receive_local(mp, &laddr, IPV4_VERSION, ira, connp)))
5370 5370 break;
5371 5371 connp = connp->conn_next;
5372 5372 }
5373 5373
5374 5374 if (connp == NULL) {
5375 5375 /*
5376 5376 * No one bound to this port. Is
5377 5377 * there a client that wants all
5378 5378 * unclaimed datagrams?
5379 5379 */
5380 5380 mutex_exit(&connfp->connf_lock);
5381 5381
5382 5382 if (ipst->ips_ipcl_proto_fanout_v4[IPPROTO_UDP].connf_head !=
5383 5383 NULL) {
5384 5384 ASSERT(ira->ira_protocol == IPPROTO_UDP);
5385 5385 ip_fanout_proto_v4(mp, ipha, ira);
5386 5386 } else {
5387 5387 /*
5388 5388 * We used to attempt to send an icmp error here, but
5389 5389 * since this is known to be a multicast packet
5390 5390 * and we don't send icmp errors in response to
5391 5391 * multicast, just drop the packet and give up sooner.
5392 5392 */
5393 5393 BUMP_MIB(ill->ill_ip_mib, udpIfStatsNoPorts);
5394 5394 freemsg(mp);
5395 5395 }
5396 5396 return;
5397 5397 }
5398 5398 ASSERT(IPCL_IS_NONSTR(connp) || connp->conn_rq != NULL);
5399 5399
5400 5400 /*
5401 5401 * If SO_REUSEADDR has been set on the first we send the
5402 5402 * packet to all clients that have joined the group and
5403 5403 * match the port.
5404 5404 */
5405 5405 if (connp->conn_reuseaddr) {
5406 5406 conn_t *first_connp = connp;
5407 5407 conn_t *next_connp;
5408 5408 mblk_t *mp1;
5409 5409
5410 5410 CONN_INC_REF(connp);
5411 5411 connp = connp->conn_next;
5412 5412 for (;;) {
5413 5413 while (connp != NULL) {
5414 5414 if (IPCL_UDP_MATCH_V6(connp, lport,
5415 5415 ipv6_all_zeros, fport, v6faddr) &&
5416 5416 conn_wantpacket(connp, ira, ipha) &&
5417 5417 (!(ira->ira_flags & IRAF_SYSTEM_LABELED) ||
5418 5418 tsol_receive_local(mp, &laddr, IPV4_VERSION,
5419 5419 ira, connp)))
5420 5420 break;
5421 5421 connp = connp->conn_next;
5422 5422 }
5423 5423 if (connp == NULL) {
5424 5424 /* No more interested clients */
5425 5425 connp = first_connp;
5426 5426 break;
5427 5427 }
5428 5428 if (((mp1 = dupmsg(mp)) == NULL) &&
5429 5429 ((mp1 = copymsg(mp)) == NULL)) {
5430 5430 /* Memory allocation failed */
5431 5431 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
5432 5432 ip_drop_input("ipIfStatsInDiscards", mp, ill);
5433 5433 connp = first_connp;
5434 5434 break;
5435 5435 }
5436 5436 CONN_INC_REF(connp);
5437 5437 mutex_exit(&connfp->connf_lock);
5438 5438
5439 5439 IP_STAT(ipst, ip_udp_fanmb);
5440 5440 ip_fanout_udp_conn(connp, mp1, (ipha_t *)mp1->b_rptr,
5441 5441 NULL, ira);
5442 5442 mutex_enter(&connfp->connf_lock);
5443 5443 /* Follow the next pointer before releasing the conn */
5444 5444 next_connp = connp->conn_next;
5445 5445 CONN_DEC_REF(connp);
5446 5446 connp = next_connp;
5447 5447 }
5448 5448 }
5449 5449
5450 5450 /* Last one. Send it upstream. */
5451 5451 mutex_exit(&connfp->connf_lock);
5452 5452 IP_STAT(ipst, ip_udp_fanmb);
5453 5453 ip_fanout_udp_conn(connp, mp, ipha, NULL, ira);
5454 5454 CONN_DEC_REF(connp);
5455 5455 }
5456 5456
5457 5457 /*
5458 5458 * Split an incoming packet's IPv4 options into the label and the other options.
5459 5459 * If 'allocate' is set it does memory allocation for the ip_pkt_t, including
5460 5460 * clearing out any leftover label or options.
5461 5461 * Otherwise it just makes ipp point into the packet.
5462 5462 *
5463 5463 * Returns zero if ok; ENOMEM if the buffer couldn't be allocated.
5464 5464 */
5465 5465 int
5466 5466 ip_find_hdr_v4(ipha_t *ipha, ip_pkt_t *ipp, boolean_t allocate)
5467 5467 {
5468 5468 uchar_t *opt;
5469 5469 uint32_t totallen;
5470 5470 uint32_t optval;
5471 5471 uint32_t optlen;
5472 5472
5473 5473 ipp->ipp_fields |= IPPF_HOPLIMIT | IPPF_TCLASS | IPPF_ADDR;
5474 5474 ipp->ipp_hoplimit = ipha->ipha_ttl;
5475 5475 ipp->ipp_type_of_service = ipha->ipha_type_of_service;
5476 5476 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_dst, &ipp->ipp_addr);
5477 5477
5478 5478 /*
5479 5479 * Get length (in 4 byte octets) of IP header options.
5480 5480 */
5481 5481 totallen = ipha->ipha_version_and_hdr_length -
5482 5482 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
5483 5483
5484 5484 if (totallen == 0) {
5485 5485 if (!allocate)
5486 5486 return (0);
5487 5487
5488 5488 /* Clear out anything from a previous packet */
5489 5489 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
5490 5490 kmem_free(ipp->ipp_ipv4_options,
5491 5491 ipp->ipp_ipv4_options_len);
5492 5492 ipp->ipp_ipv4_options = NULL;
5493 5493 ipp->ipp_ipv4_options_len = 0;
5494 5494 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS;
5495 5495 }
5496 5496 if (ipp->ipp_fields & IPPF_LABEL_V4) {
5497 5497 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
5498 5498 ipp->ipp_label_v4 = NULL;
5499 5499 ipp->ipp_label_len_v4 = 0;
5500 5500 ipp->ipp_fields &= ~IPPF_LABEL_V4;
5501 5501 }
5502 5502 return (0);
5503 5503 }
5504 5504
5505 5505 totallen <<= 2;
5506 5506 opt = (uchar_t *)&ipha[1];
5507 5507 if (!is_system_labeled()) {
5508 5508
5509 5509 copyall:
5510 5510 if (!allocate) {
5511 5511 if (totallen != 0) {
5512 5512 ipp->ipp_ipv4_options = opt;
5513 5513 ipp->ipp_ipv4_options_len = totallen;
5514 5514 ipp->ipp_fields |= IPPF_IPV4_OPTIONS;
5515 5515 }
5516 5516 return (0);
5517 5517 }
5518 5518 /* Just copy all of options */
5519 5519 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
5520 5520 if (totallen == ipp->ipp_ipv4_options_len) {
5521 5521 bcopy(opt, ipp->ipp_ipv4_options, totallen);
5522 5522 return (0);
5523 5523 }
5524 5524 kmem_free(ipp->ipp_ipv4_options,
5525 5525 ipp->ipp_ipv4_options_len);
5526 5526 ipp->ipp_ipv4_options = NULL;
5527 5527 ipp->ipp_ipv4_options_len = 0;
5528 5528 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS;
5529 5529 }
5530 5530 if (totallen == 0)
5531 5531 return (0);
5532 5532
5533 5533 ipp->ipp_ipv4_options = kmem_alloc(totallen, KM_NOSLEEP);
5534 5534 if (ipp->ipp_ipv4_options == NULL)
5535 5535 return (ENOMEM);
5536 5536 ipp->ipp_ipv4_options_len = totallen;
5537 5537 ipp->ipp_fields |= IPPF_IPV4_OPTIONS;
5538 5538 bcopy(opt, ipp->ipp_ipv4_options, totallen);
5539 5539 return (0);
5540 5540 }
5541 5541
5542 5542 if (allocate && (ipp->ipp_fields & IPPF_LABEL_V4)) {
5543 5543 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
5544 5544 ipp->ipp_label_v4 = NULL;
5545 5545 ipp->ipp_label_len_v4 = 0;
5546 5546 ipp->ipp_fields &= ~IPPF_LABEL_V4;
5547 5547 }
5548 5548
5549 5549 /*
5550 5550 * Search for CIPSO option.
5551 5551 * We assume CIPSO is first in options if it is present.
5552 5552 * If it isn't, then ipp_opt_ipv4_options will not include the options
5553 5553 * prior to the CIPSO option.
5554 5554 */
5555 5555 while (totallen != 0) {
5556 5556 switch (optval = opt[IPOPT_OPTVAL]) {
5557 5557 case IPOPT_EOL:
5558 5558 return (0);
5559 5559 case IPOPT_NOP:
5560 5560 optlen = 1;
5561 5561 break;
5562 5562 default:
5563 5563 if (totallen <= IPOPT_OLEN)
5564 5564 return (EINVAL);
5565 5565 optlen = opt[IPOPT_OLEN];
5566 5566 if (optlen < 2)
5567 5567 return (EINVAL);
5568 5568 }
5569 5569 if (optlen > totallen)
5570 5570 return (EINVAL);
5571 5571
5572 5572 switch (optval) {
5573 5573 case IPOPT_COMSEC:
5574 5574 if (!allocate) {
5575 5575 ipp->ipp_label_v4 = opt;
5576 5576 ipp->ipp_label_len_v4 = optlen;
5577 5577 ipp->ipp_fields |= IPPF_LABEL_V4;
5578 5578 } else {
5579 5579 ipp->ipp_label_v4 = kmem_alloc(optlen,
5580 5580 KM_NOSLEEP);
5581 5581 if (ipp->ipp_label_v4 == NULL)
5582 5582 return (ENOMEM);
5583 5583 ipp->ipp_label_len_v4 = optlen;
5584 5584 ipp->ipp_fields |= IPPF_LABEL_V4;
5585 5585 bcopy(opt, ipp->ipp_label_v4, optlen);
5586 5586 }
5587 5587 totallen -= optlen;
5588 5588 opt += optlen;
5589 5589
5590 5590 /* Skip padding bytes until we get to a multiple of 4 */
5591 5591 while ((totallen & 3) != 0 && opt[0] == IPOPT_NOP) {
5592 5592 totallen--;
5593 5593 opt++;
5594 5594 }
5595 5595 /* Remaining as ipp_ipv4_options */
5596 5596 goto copyall;
5597 5597 }
5598 5598 totallen -= optlen;
5599 5599 opt += optlen;
5600 5600 }
5601 5601 /* No CIPSO found; return everything as ipp_ipv4_options */
5602 5602 totallen = ipha->ipha_version_and_hdr_length -
5603 5603 (uint8_t)((IP_VERSION << 4) + IP_SIMPLE_HDR_LENGTH_IN_WORDS);
5604 5604 totallen <<= 2;
5605 5605 opt = (uchar_t *)&ipha[1];
5606 5606 goto copyall;
5607 5607 }
5608 5608
5609 5609 /*
5610 5610 * Efficient versions of lookup for an IRE when we only
5611 5611 * match the address.
5612 5612 * For RTF_REJECT or BLACKHOLE we return IRE_NOROUTE.
5613 5613 * Does not handle multicast addresses.
5614 5614 */
5615 5615 uint_t
5616 5616 ip_type_v4(ipaddr_t addr, ip_stack_t *ipst)
5617 5617 {
5618 5618 ire_t *ire;
5619 5619 uint_t result;
5620 5620
5621 5621 ire = ire_ftable_lookup_simple_v4(addr, 0, ipst, NULL);
5622 5622 ASSERT(ire != NULL);
5623 5623 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))
5624 5624 result = IRE_NOROUTE;
5625 5625 else
5626 5626 result = ire->ire_type;
5627 5627 ire_refrele(ire);
5628 5628 return (result);
5629 5629 }
5630 5630
5631 5631 /*
5632 5632 * Efficient versions of lookup for an IRE when we only
5633 5633 * match the address.
5634 5634 * For RTF_REJECT or BLACKHOLE we return IRE_NOROUTE.
5635 5635 * Does not handle multicast addresses.
5636 5636 */
5637 5637 uint_t
5638 5638 ip_type_v6(const in6_addr_t *addr, ip_stack_t *ipst)
5639 5639 {
5640 5640 ire_t *ire;
5641 5641 uint_t result;
5642 5642
5643 5643 ire = ire_ftable_lookup_simple_v6(addr, 0, ipst, NULL);
5644 5644 ASSERT(ire != NULL);
5645 5645 if (ire->ire_flags & (RTF_REJECT|RTF_BLACKHOLE))
5646 5646 result = IRE_NOROUTE;
5647 5647 else
5648 5648 result = ire->ire_type;
5649 5649 ire_refrele(ire);
5650 5650 return (result);
5651 5651 }
5652 5652
5653 5653 /*
5654 5654 * Nobody should be sending
5655 5655 * packets up this stream
5656 5656 */
5657 5657 static void
5658 5658 ip_lrput(queue_t *q, mblk_t *mp)
5659 5659 {
5660 5660 switch (mp->b_datap->db_type) {
5661 5661 case M_FLUSH:
5662 5662 /* Turn around */
5663 5663 if (*mp->b_rptr & FLUSHW) {
5664 5664 *mp->b_rptr &= ~FLUSHR;
5665 5665 qreply(q, mp);
5666 5666 return;
5667 5667 }
5668 5668 break;
5669 5669 }
5670 5670 freemsg(mp);
5671 5671 }
5672 5672
5673 5673 /* Nobody should be sending packets down this stream */
5674 5674 /* ARGSUSED */
5675 5675 void
5676 5676 ip_lwput(queue_t *q, mblk_t *mp)
5677 5677 {
5678 5678 freemsg(mp);
5679 5679 }
5680 5680
5681 5681 /*
5682 5682 * Move the first hop in any source route to ipha_dst and remove that part of
5683 5683 * the source route. Called by other protocols. Errors in option formatting
5684 5684 * are ignored - will be handled by ip_output_options. Return the final
5685 5685 * destination (either ipha_dst or the last entry in a source route.)
5686 5686 */
5687 5687 ipaddr_t
5688 5688 ip_massage_options(ipha_t *ipha, netstack_t *ns)
5689 5689 {
5690 5690 ipoptp_t opts;
5691 5691 uchar_t *opt;
5692 5692 uint8_t optval;
5693 5693 uint8_t optlen;
5694 5694 ipaddr_t dst;
5695 5695 int i;
5696 5696 ip_stack_t *ipst = ns->netstack_ip;
5697 5697
5698 5698 ip2dbg(("ip_massage_options\n"));
5699 5699 dst = ipha->ipha_dst;
5700 5700 for (optval = ipoptp_first(&opts, ipha);
5701 5701 optval != IPOPT_EOL;
5702 5702 optval = ipoptp_next(&opts)) {
5703 5703 opt = opts.ipoptp_cur;
5704 5704 switch (optval) {
5705 5705 uint8_t off;
5706 5706 case IPOPT_SSRR:
5707 5707 case IPOPT_LSRR:
5708 5708 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
5709 5709 ip1dbg(("ip_massage_options: bad src route\n"));
5710 5710 break;
5711 5711 }
5712 5712 optlen = opts.ipoptp_len;
5713 5713 off = opt[IPOPT_OFFSET];
5714 5714 off--;
5715 5715 redo_srr:
5716 5716 if (optlen < IP_ADDR_LEN ||
5717 5717 off > optlen - IP_ADDR_LEN) {
5718 5718 /* End of source route */
5719 5719 ip1dbg(("ip_massage_options: end of SR\n"));
5720 5720 break;
5721 5721 }
5722 5722 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
5723 5723 ip1dbg(("ip_massage_options: next hop 0x%x\n",
5724 5724 ntohl(dst)));
5725 5725 /*
5726 5726 * Check if our address is present more than
5727 5727 * once as consecutive hops in source route.
5728 5728 * XXX verify per-interface ip_forwarding
5729 5729 * for source route?
5730 5730 */
5731 5731 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
5732 5732 off += IP_ADDR_LEN;
5733 5733 goto redo_srr;
5734 5734 }
5735 5735 if (dst == htonl(INADDR_LOOPBACK)) {
5736 5736 ip1dbg(("ip_massage_options: loopback addr in "
5737 5737 "source route!\n"));
5738 5738 break;
5739 5739 }
5740 5740 /*
5741 5741 * Update ipha_dst to be the first hop and remove the
5742 5742 * first hop from the source route (by overwriting
5743 5743 * part of the option with NOP options).
5744 5744 */
5745 5745 ipha->ipha_dst = dst;
5746 5746 /* Put the last entry in dst */
5747 5747 off = ((optlen - IP_ADDR_LEN - 3) & ~(IP_ADDR_LEN-1)) +
5748 5748 3;
5749 5749 bcopy(&opt[off], &dst, IP_ADDR_LEN);
5750 5750
5751 5751 ip1dbg(("ip_massage_options: last hop 0x%x\n",
5752 5752 ntohl(dst)));
5753 5753 /* Move down and overwrite */
5754 5754 opt[IP_ADDR_LEN] = opt[0];
5755 5755 opt[IP_ADDR_LEN+1] = opt[IPOPT_OLEN] - IP_ADDR_LEN;
5756 5756 opt[IP_ADDR_LEN+2] = opt[IPOPT_OFFSET];
5757 5757 for (i = 0; i < IP_ADDR_LEN; i++)
5758 5758 opt[i] = IPOPT_NOP;
5759 5759 break;
5760 5760 }
5761 5761 }
5762 5762 return (dst);
5763 5763 }
5764 5764
5765 5765 /*
5766 5766 * Return the network mask
5767 5767 * associated with the specified address.
5768 5768 */
5769 5769 ipaddr_t
5770 5770 ip_net_mask(ipaddr_t addr)
5771 5771 {
5772 5772 uchar_t *up = (uchar_t *)&addr;
5773 5773 ipaddr_t mask = 0;
5774 5774 uchar_t *maskp = (uchar_t *)&mask;
5775 5775
5776 5776 #if defined(__i386) || defined(__amd64)
5777 5777 #define TOTALLY_BRAIN_DAMAGED_C_COMPILER
5778 5778 #endif
5779 5779 #ifdef TOTALLY_BRAIN_DAMAGED_C_COMPILER
5780 5780 maskp[0] = maskp[1] = maskp[2] = maskp[3] = 0;
5781 5781 #endif
5782 5782 if (CLASSD(addr)) {
5783 5783 maskp[0] = 0xF0;
5784 5784 return (mask);
5785 5785 }
5786 5786
5787 5787 /* We assume Class E default netmask to be 32 */
5788 5788 if (CLASSE(addr))
5789 5789 return (0xffffffffU);
5790 5790
5791 5791 if (addr == 0)
5792 5792 return (0);
5793 5793 maskp[0] = 0xFF;
5794 5794 if ((up[0] & 0x80) == 0)
5795 5795 return (mask);
5796 5796
5797 5797 maskp[1] = 0xFF;
5798 5798 if ((up[0] & 0xC0) == 0x80)
5799 5799 return (mask);
5800 5800
5801 5801 maskp[2] = 0xFF;
5802 5802 if ((up[0] & 0xE0) == 0xC0)
5803 5803 return (mask);
5804 5804
5805 5805 /* Otherwise return no mask */
5806 5806 return ((ipaddr_t)0);
5807 5807 }
5808 5808
5809 5809 /* Name/Value Table Lookup Routine */
5810 5810 char *
5811 5811 ip_nv_lookup(nv_t *nv, int value)
5812 5812 {
5813 5813 if (!nv)
5814 5814 return (NULL);
5815 5815 for (; nv->nv_name; nv++) {
5816 5816 if (nv->nv_value == value)
5817 5817 return (nv->nv_name);
5818 5818 }
5819 5819 return ("unknown");
5820 5820 }
5821 5821
5822 5822 static int
5823 5823 ip_wait_for_info_ack(ill_t *ill)
5824 5824 {
5825 5825 int err;
5826 5826
5827 5827 mutex_enter(&ill->ill_lock);
5828 5828 while (ill->ill_state_flags & ILL_LL_SUBNET_PENDING) {
5829 5829 /*
5830 5830 * Return value of 0 indicates a pending signal.
5831 5831 */
5832 5832 err = cv_wait_sig(&ill->ill_cv, &ill->ill_lock);
5833 5833 if (err == 0) {
5834 5834 mutex_exit(&ill->ill_lock);
5835 5835 return (EINTR);
5836 5836 }
5837 5837 }
5838 5838 mutex_exit(&ill->ill_lock);
5839 5839 /*
5840 5840 * ip_rput_other could have set an error in ill_error on
5841 5841 * receipt of M_ERROR.
5842 5842 */
5843 5843 return (ill->ill_error);
5844 5844 }
5845 5845
5846 5846 /*
5847 5847 * This is a module open, i.e. this is a control stream for access
5848 5848 * to a DLPI device. We allocate an ill_t as the instance data in
5849 5849 * this case.
5850 5850 */
5851 5851 static int
5852 5852 ip_modopen(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5853 5853 {
5854 5854 ill_t *ill;
5855 5855 int err;
5856 5856 zoneid_t zoneid;
5857 5857 netstack_t *ns;
5858 5858 ip_stack_t *ipst;
5859 5859
5860 5860 /*
5861 5861 * Prevent unprivileged processes from pushing IP so that
5862 5862 * they can't send raw IP.
5863 5863 */
5864 5864 if (secpolicy_net_rawaccess(credp) != 0)
5865 5865 return (EPERM);
5866 5866
5867 5867 ns = netstack_find_by_cred(credp);
5868 5868 ASSERT(ns != NULL);
5869 5869 ipst = ns->netstack_ip;
5870 5870 ASSERT(ipst != NULL);
5871 5871
5872 5872 /*
5873 5873 * For exclusive stacks we set the zoneid to zero
5874 5874 * to make IP operate as if in the global zone.
5875 5875 */
5876 5876 if (ipst->ips_netstack->netstack_stackid != GLOBAL_NETSTACKID)
5877 5877 zoneid = GLOBAL_ZONEID;
5878 5878 else
5879 5879 zoneid = crgetzoneid(credp);
5880 5880
5881 5881 ill = (ill_t *)mi_open_alloc_sleep(sizeof (ill_t));
5882 5882 q->q_ptr = WR(q)->q_ptr = ill;
5883 5883 ill->ill_ipst = ipst;
5884 5884 ill->ill_zoneid = zoneid;
5885 5885
5886 5886 /*
5887 5887 * ill_init initializes the ill fields and then sends down
5888 5888 * down a DL_INFO_REQ after calling qprocson.
5889 5889 */
5890 5890 err = ill_init(q, ill);
5891 5891
5892 5892 if (err != 0) {
5893 5893 mi_free(ill);
5894 5894 netstack_rele(ipst->ips_netstack);
5895 5895 q->q_ptr = NULL;
5896 5896 WR(q)->q_ptr = NULL;
5897 5897 return (err);
5898 5898 }
5899 5899
5900 5900 /*
5901 5901 * Wait for the DL_INFO_ACK if a DL_INFO_REQ was sent.
5902 5902 *
5903 5903 * ill_init initializes the ipsq marking this thread as
5904 5904 * writer
5905 5905 */
5906 5906 ipsq_exit(ill->ill_phyint->phyint_ipsq);
5907 5907 err = ip_wait_for_info_ack(ill);
5908 5908 if (err == 0)
5909 5909 ill->ill_credp = credp;
5910 5910 else
5911 5911 goto fail;
5912 5912
5913 5913 crhold(credp);
5914 5914
5915 5915 mutex_enter(&ipst->ips_ip_mi_lock);
5916 5916 err = mi_open_link(&ipst->ips_ip_g_head, (IDP)q->q_ptr, devp, flag,
5917 5917 sflag, credp);
5918 5918 mutex_exit(&ipst->ips_ip_mi_lock);
5919 5919 fail:
5920 5920 if (err) {
5921 5921 (void) ip_close(q, 0);
5922 5922 return (err);
5923 5923 }
5924 5924 return (0);
5925 5925 }
5926 5926
5927 5927 /* For /dev/ip aka AF_INET open */
5928 5928 int
5929 5929 ip_openv4(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5930 5930 {
5931 5931 return (ip_open(q, devp, flag, sflag, credp, B_FALSE));
5932 5932 }
5933 5933
5934 5934 /* For /dev/ip6 aka AF_INET6 open */
5935 5935 int
5936 5936 ip_openv6(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
5937 5937 {
5938 5938 return (ip_open(q, devp, flag, sflag, credp, B_TRUE));
5939 5939 }
5940 5940
5941 5941 /* IP open routine. */
5942 5942 int
5943 5943 ip_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp,
5944 5944 boolean_t isv6)
5945 5945 {
5946 5946 conn_t *connp;
5947 5947 major_t maj;
5948 5948 zoneid_t zoneid;
5949 5949 netstack_t *ns;
5950 5950 ip_stack_t *ipst;
5951 5951
5952 5952 /* Allow reopen. */
5953 5953 if (q->q_ptr != NULL)
5954 5954 return (0);
5955 5955
5956 5956 if (sflag & MODOPEN) {
5957 5957 /* This is a module open */
5958 5958 return (ip_modopen(q, devp, flag, sflag, credp));
5959 5959 }
5960 5960
5961 5961 if ((flag & ~(FKLYR)) == IP_HELPER_STR) {
5962 5962 /*
5963 5963 * Non streams based socket looking for a stream
5964 5964 * to access IP
5965 5965 */
5966 5966 return (ip_helper_stream_setup(q, devp, flag, sflag,
5967 5967 credp, isv6));
5968 5968 }
5969 5969
5970 5970 ns = netstack_find_by_cred(credp);
5971 5971 ASSERT(ns != NULL);
5972 5972 ipst = ns->netstack_ip;
5973 5973 ASSERT(ipst != NULL);
5974 5974
5975 5975 /*
5976 5976 * For exclusive stacks we set the zoneid to zero
5977 5977 * to make IP operate as if in the global zone.
5978 5978 */
5979 5979 if (ipst->ips_netstack->netstack_stackid != GLOBAL_NETSTACKID)
5980 5980 zoneid = GLOBAL_ZONEID;
5981 5981 else
5982 5982 zoneid = crgetzoneid(credp);
5983 5983
5984 5984 /*
5985 5985 * We are opening as a device. This is an IP client stream, and we
5986 5986 * allocate an conn_t as the instance data.
5987 5987 */
5988 5988 connp = ipcl_conn_create(IPCL_IPCCONN, KM_SLEEP, ipst->ips_netstack);
5989 5989
5990 5990 /*
5991 5991 * ipcl_conn_create did a netstack_hold. Undo the hold that was
5992 5992 * done by netstack_find_by_cred()
5993 5993 */
5994 5994 netstack_rele(ipst->ips_netstack);
5995 5995
5996 5996 connp->conn_ixa->ixa_flags |= IXAF_MULTICAST_LOOP | IXAF_SET_ULP_CKSUM;
5997 5997 /* conn_allzones can not be set this early, hence no IPCL_ZONEID */
5998 5998 connp->conn_ixa->ixa_zoneid = zoneid;
5999 5999 connp->conn_zoneid = zoneid;
6000 6000
6001 6001 connp->conn_rq = q;
6002 6002 q->q_ptr = WR(q)->q_ptr = connp;
6003 6003
6004 6004 /* Minor tells us which /dev entry was opened */
6005 6005 if (isv6) {
6006 6006 connp->conn_family = AF_INET6;
6007 6007 connp->conn_ipversion = IPV6_VERSION;
6008 6008 connp->conn_ixa->ixa_flags &= ~IXAF_IS_IPV4;
6009 6009 connp->conn_ixa->ixa_src_preferences = IPV6_PREFER_SRC_DEFAULT;
6010 6010 } else {
6011 6011 connp->conn_family = AF_INET;
6012 6012 connp->conn_ipversion = IPV4_VERSION;
6013 6013 connp->conn_ixa->ixa_flags |= IXAF_IS_IPV4;
6014 6014 }
6015 6015
6016 6016 if ((ip_minor_arena_la != NULL) && (flag & SO_SOCKSTR) &&
6017 6017 ((connp->conn_dev = inet_minor_alloc(ip_minor_arena_la)) != 0)) {
6018 6018 connp->conn_minor_arena = ip_minor_arena_la;
6019 6019 } else {
6020 6020 /*
6021 6021 * Either minor numbers in the large arena were exhausted
6022 6022 * or a non socket application is doing the open.
6023 6023 * Try to allocate from the small arena.
6024 6024 */
6025 6025 if ((connp->conn_dev =
6026 6026 inet_minor_alloc(ip_minor_arena_sa)) == 0) {
6027 6027 /* CONN_DEC_REF takes care of netstack_rele() */
6028 6028 q->q_ptr = WR(q)->q_ptr = NULL;
6029 6029 CONN_DEC_REF(connp);
6030 6030 return (EBUSY);
6031 6031 }
6032 6032 connp->conn_minor_arena = ip_minor_arena_sa;
6033 6033 }
6034 6034
6035 6035 maj = getemajor(*devp);
6036 6036 *devp = makedevice(maj, (minor_t)connp->conn_dev);
6037 6037
6038 6038 /*
6039 6039 * connp->conn_cred is crfree()ed in ipcl_conn_destroy()
6040 6040 */
6041 6041 connp->conn_cred = credp;
6042 6042 connp->conn_cpid = curproc->p_pid;
6043 6043 /* Cache things in ixa without an extra refhold */
6044 6044 ASSERT(!(connp->conn_ixa->ixa_free_flags & IXA_FREE_CRED));
6045 6045 connp->conn_ixa->ixa_cred = connp->conn_cred;
6046 6046 connp->conn_ixa->ixa_cpid = connp->conn_cpid;
6047 6047 if (is_system_labeled())
6048 6048 connp->conn_ixa->ixa_tsl = crgetlabel(connp->conn_cred);
6049 6049
6050 6050 /*
6051 6051 * Handle IP_IOC_RTS_REQUEST and other ioctls which use conn_recv
6052 6052 */
6053 6053 connp->conn_recv = ip_conn_input;
6054 6054 connp->conn_recvicmp = ip_conn_input_icmp;
6055 6055
6056 6056 crhold(connp->conn_cred);
6057 6057
6058 6058 /*
6059 6059 * If the caller has the process-wide flag set, then default to MAC
6060 6060 * exempt mode. This allows read-down to unlabeled hosts.
6061 6061 */
6062 6062 if (getpflags(NET_MAC_AWARE, credp) != 0)
6063 6063 connp->conn_mac_mode = CONN_MAC_AWARE;
6064 6064
6065 6065 connp->conn_zone_is_global = (crgetzoneid(credp) == GLOBAL_ZONEID);
6066 6066
6067 6067 connp->conn_rq = q;
6068 6068 connp->conn_wq = WR(q);
6069 6069
6070 6070 /* Non-zero default values */
6071 6071 connp->conn_ixa->ixa_flags |= IXAF_MULTICAST_LOOP;
6072 6072
6073 6073 /*
6074 6074 * Make the conn globally visible to walkers
6075 6075 */
6076 6076 ASSERT(connp->conn_ref == 1);
6077 6077 mutex_enter(&connp->conn_lock);
6078 6078 connp->conn_state_flags &= ~CONN_INCIPIENT;
6079 6079 mutex_exit(&connp->conn_lock);
6080 6080
6081 6081 qprocson(q);
6082 6082
6083 6083 return (0);
6084 6084 }
6085 6085
6086 6086 /*
6087 6087 * Set IPsec policy from an ipsec_req_t. If the req is not "zero" and valid,
6088 6088 * all of them are copied to the conn_t. If the req is "zero", the policy is
6089 6089 * zeroed out. A "zero" policy has zero ipsr_{ah,req,self_encap}_req
6090 6090 * fields.
6091 6091 * We keep only the latest setting of the policy and thus policy setting
6092 6092 * is not incremental/cumulative.
6093 6093 *
6094 6094 * Requests to set policies with multiple alternative actions will
6095 6095 * go through a different API.
6096 6096 */
6097 6097 int
6098 6098 ipsec_set_req(cred_t *cr, conn_t *connp, ipsec_req_t *req)
6099 6099 {
6100 6100 uint_t ah_req = 0;
6101 6101 uint_t esp_req = 0;
6102 6102 uint_t se_req = 0;
6103 6103 ipsec_act_t *actp = NULL;
6104 6104 uint_t nact;
6105 6105 ipsec_policy_head_t *ph;
6106 6106 boolean_t is_pol_reset, is_pol_inserted = B_FALSE;
6107 6107 int error = 0;
6108 6108 netstack_t *ns = connp->conn_netstack;
6109 6109 ip_stack_t *ipst = ns->netstack_ip;
6110 6110 ipsec_stack_t *ipss = ns->netstack_ipsec;
6111 6111
6112 6112 #define REQ_MASK (IPSEC_PREF_REQUIRED|IPSEC_PREF_NEVER)
6113 6113
6114 6114 /*
6115 6115 * The IP_SEC_OPT option does not allow variable length parameters,
6116 6116 * hence a request cannot be NULL.
6117 6117 */
6118 6118 if (req == NULL)
6119 6119 return (EINVAL);
6120 6120
6121 6121 ah_req = req->ipsr_ah_req;
6122 6122 esp_req = req->ipsr_esp_req;
6123 6123 se_req = req->ipsr_self_encap_req;
6124 6124
6125 6125 /* Don't allow setting self-encap without one or more of AH/ESP. */
6126 6126 if (se_req != 0 && esp_req == 0 && ah_req == 0)
6127 6127 return (EINVAL);
6128 6128
6129 6129 /*
6130 6130 * Are we dealing with a request to reset the policy (i.e.
6131 6131 * zero requests).
6132 6132 */
6133 6133 is_pol_reset = ((ah_req & REQ_MASK) == 0 &&
6134 6134 (esp_req & REQ_MASK) == 0 &&
6135 6135 (se_req & REQ_MASK) == 0);
6136 6136
6137 6137 if (!is_pol_reset) {
6138 6138 /*
6139 6139 * If we couldn't load IPsec, fail with "protocol
6140 6140 * not supported".
6141 6141 * IPsec may not have been loaded for a request with zero
6142 6142 * policies, so we don't fail in this case.
6143 6143 */
6144 6144 mutex_enter(&ipss->ipsec_loader_lock);
6145 6145 if (ipss->ipsec_loader_state != IPSEC_LOADER_SUCCEEDED) {
6146 6146 mutex_exit(&ipss->ipsec_loader_lock);
6147 6147 return (EPROTONOSUPPORT);
6148 6148 }
6149 6149 mutex_exit(&ipss->ipsec_loader_lock);
6150 6150
6151 6151 /*
6152 6152 * Test for valid requests. Invalid algorithms
6153 6153 * need to be tested by IPsec code because new
6154 6154 * algorithms can be added dynamically.
6155 6155 */
6156 6156 if ((ah_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0 ||
6157 6157 (esp_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0 ||
6158 6158 (se_req & ~(REQ_MASK|IPSEC_PREF_UNIQUE)) != 0) {
6159 6159 return (EINVAL);
6160 6160 }
6161 6161
6162 6162 /*
6163 6163 * Only privileged users can issue these
6164 6164 * requests.
6165 6165 */
6166 6166 if (((ah_req & IPSEC_PREF_NEVER) ||
6167 6167 (esp_req & IPSEC_PREF_NEVER) ||
6168 6168 (se_req & IPSEC_PREF_NEVER)) &&
6169 6169 secpolicy_ip_config(cr, B_FALSE) != 0) {
6170 6170 return (EPERM);
6171 6171 }
6172 6172
6173 6173 /*
6174 6174 * The IPSEC_PREF_REQUIRED and IPSEC_PREF_NEVER
6175 6175 * are mutually exclusive.
6176 6176 */
6177 6177 if (((ah_req & REQ_MASK) == REQ_MASK) ||
6178 6178 ((esp_req & REQ_MASK) == REQ_MASK) ||
6179 6179 ((se_req & REQ_MASK) == REQ_MASK)) {
6180 6180 /* Both of them are set */
6181 6181 return (EINVAL);
6182 6182 }
6183 6183 }
6184 6184
6185 6185 ASSERT(MUTEX_HELD(&connp->conn_lock));
6186 6186
6187 6187 /*
6188 6188 * If we have already cached policies in conn_connect(), don't
6189 6189 * let them change now. We cache policies for connections
6190 6190 * whose src,dst [addr, port] is known.
6191 6191 */
6192 6192 if (connp->conn_policy_cached) {
6193 6193 return (EINVAL);
6194 6194 }
6195 6195
6196 6196 /*
6197 6197 * We have a zero policies, reset the connection policy if already
6198 6198 * set. This will cause the connection to inherit the
6199 6199 * global policy, if any.
6200 6200 */
6201 6201 if (is_pol_reset) {
6202 6202 if (connp->conn_policy != NULL) {
6203 6203 IPPH_REFRELE(connp->conn_policy, ipst->ips_netstack);
6204 6204 connp->conn_policy = NULL;
6205 6205 }
6206 6206 connp->conn_in_enforce_policy = B_FALSE;
6207 6207 connp->conn_out_enforce_policy = B_FALSE;
6208 6208 return (0);
6209 6209 }
6210 6210
6211 6211 ph = connp->conn_policy = ipsec_polhead_split(connp->conn_policy,
6212 6212 ipst->ips_netstack);
6213 6213 if (ph == NULL)
6214 6214 goto enomem;
6215 6215
6216 6216 ipsec_actvec_from_req(req, &actp, &nact, ipst->ips_netstack);
6217 6217 if (actp == NULL)
6218 6218 goto enomem;
6219 6219
6220 6220 /*
6221 6221 * Always insert IPv4 policy entries, since they can also apply to
6222 6222 * ipv6 sockets being used in ipv4-compat mode.
6223 6223 */
6224 6224 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V4,
6225 6225 IPSEC_TYPE_INBOUND, ns))
6226 6226 goto enomem;
6227 6227 is_pol_inserted = B_TRUE;
6228 6228 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V4,
6229 6229 IPSEC_TYPE_OUTBOUND, ns))
6230 6230 goto enomem;
6231 6231
6232 6232 /*
6233 6233 * We're looking at a v6 socket, also insert the v6-specific
6234 6234 * entries.
6235 6235 */
6236 6236 if (connp->conn_family == AF_INET6) {
6237 6237 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V6,
6238 6238 IPSEC_TYPE_INBOUND, ns))
6239 6239 goto enomem;
6240 6240 if (!ipsec_polhead_insert(ph, actp, nact, IPSEC_AF_V6,
6241 6241 IPSEC_TYPE_OUTBOUND, ns))
6242 6242 goto enomem;
6243 6243 }
6244 6244
6245 6245 ipsec_actvec_free(actp, nact);
6246 6246
6247 6247 /*
6248 6248 * If the requests need security, set enforce_policy.
6249 6249 * If the requests are IPSEC_PREF_NEVER, one should
6250 6250 * still set conn_out_enforce_policy so that ip_set_destination
6251 6251 * marks the ip_xmit_attr_t appropriatly. This is needed so that
6252 6252 * for connections that we don't cache policy in at connect time,
6253 6253 * if global policy matches in ip_output_attach_policy, we
6254 6254 * don't wrongly inherit global policy. Similarly, we need
6255 6255 * to set conn_in_enforce_policy also so that we don't verify
6256 6256 * policy wrongly.
6257 6257 */
6258 6258 if ((ah_req & REQ_MASK) != 0 ||
6259 6259 (esp_req & REQ_MASK) != 0 ||
6260 6260 (se_req & REQ_MASK) != 0) {
6261 6261 connp->conn_in_enforce_policy = B_TRUE;
6262 6262 connp->conn_out_enforce_policy = B_TRUE;
6263 6263 }
6264 6264
6265 6265 return (error);
6266 6266 #undef REQ_MASK
6267 6267
6268 6268 /*
6269 6269 * Common memory-allocation-failure exit path.
6270 6270 */
6271 6271 enomem:
6272 6272 if (actp != NULL)
6273 6273 ipsec_actvec_free(actp, nact);
6274 6274 if (is_pol_inserted)
6275 6275 ipsec_polhead_flush(ph, ns);
6276 6276 return (ENOMEM);
6277 6277 }
6278 6278
6279 6279 /*
6280 6280 * Set socket options for joining and leaving multicast groups.
6281 6281 * Common to IPv4 and IPv6; inet6 indicates the type of socket.
6282 6282 * The caller has already check that the option name is consistent with
6283 6283 * the address family of the socket.
6284 6284 */
6285 6285 int
6286 6286 ip_opt_set_multicast_group(conn_t *connp, t_scalar_t name,
6287 6287 uchar_t *invalp, boolean_t inet6, boolean_t checkonly)
6288 6288 {
6289 6289 int *i1 = (int *)invalp;
6290 6290 int error = 0;
6291 6291 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
6292 6292 struct ip_mreq *v4_mreqp;
6293 6293 struct ipv6_mreq *v6_mreqp;
6294 6294 struct group_req *greqp;
6295 6295 ire_t *ire;
6296 6296 boolean_t done = B_FALSE;
6297 6297 ipaddr_t ifaddr;
6298 6298 in6_addr_t v6group;
6299 6299 uint_t ifindex;
6300 6300 boolean_t mcast_opt = B_TRUE;
6301 6301 mcast_record_t fmode;
6302 6302 int (*optfn)(conn_t *, boolean_t, const in6_addr_t *,
6303 6303 ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *);
6304 6304
6305 6305 switch (name) {
6306 6306 case IP_ADD_MEMBERSHIP:
6307 6307 case IPV6_JOIN_GROUP:
6308 6308 mcast_opt = B_FALSE;
6309 6309 /* FALLTHRU */
6310 6310 case MCAST_JOIN_GROUP:
6311 6311 fmode = MODE_IS_EXCLUDE;
6312 6312 optfn = ip_opt_add_group;
6313 6313 break;
6314 6314
6315 6315 case IP_DROP_MEMBERSHIP:
6316 6316 case IPV6_LEAVE_GROUP:
6317 6317 mcast_opt = B_FALSE;
6318 6318 /* FALLTHRU */
6319 6319 case MCAST_LEAVE_GROUP:
6320 6320 fmode = MODE_IS_INCLUDE;
6321 6321 optfn = ip_opt_delete_group;
6322 6322 break;
6323 6323 default:
6324 6324 ASSERT(0);
6325 6325 }
6326 6326
6327 6327 if (mcast_opt) {
6328 6328 struct sockaddr_in *sin;
6329 6329 struct sockaddr_in6 *sin6;
6330 6330
6331 6331 greqp = (struct group_req *)i1;
6332 6332 if (greqp->gr_group.ss_family == AF_INET) {
6333 6333 sin = (struct sockaddr_in *)&(greqp->gr_group);
6334 6334 IN6_INADDR_TO_V4MAPPED(&sin->sin_addr, &v6group);
6335 6335 } else {
6336 6336 if (!inet6)
6337 6337 return (EINVAL); /* Not on INET socket */
6338 6338
6339 6339 sin6 = (struct sockaddr_in6 *)&(greqp->gr_group);
6340 6340 v6group = sin6->sin6_addr;
6341 6341 }
6342 6342 ifaddr = INADDR_ANY;
6343 6343 ifindex = greqp->gr_interface;
6344 6344 } else if (inet6) {
6345 6345 v6_mreqp = (struct ipv6_mreq *)i1;
6346 6346 v6group = v6_mreqp->ipv6mr_multiaddr;
6347 6347 ifaddr = INADDR_ANY;
6348 6348 ifindex = v6_mreqp->ipv6mr_interface;
6349 6349 } else {
6350 6350 v4_mreqp = (struct ip_mreq *)i1;
6351 6351 IN6_INADDR_TO_V4MAPPED(&v4_mreqp->imr_multiaddr, &v6group);
6352 6352 ifaddr = (ipaddr_t)v4_mreqp->imr_interface.s_addr;
6353 6353 ifindex = 0;
6354 6354 }
6355 6355
6356 6356 /*
6357 6357 * In the multirouting case, we need to replicate
6358 6358 * the request on all interfaces that will take part
6359 6359 * in replication. We do so because multirouting is
6360 6360 * reflective, thus we will probably receive multi-
6361 6361 * casts on those interfaces.
6362 6362 * The ip_multirt_apply_membership() succeeds if
6363 6363 * the operation succeeds on at least one interface.
6364 6364 */
6365 6365 if (IN6_IS_ADDR_V4MAPPED(&v6group)) {
6366 6366 ipaddr_t group;
6367 6367
6368 6368 IN6_V4MAPPED_TO_IPADDR(&v6group, group);
6369 6369
6370 6370 ire = ire_ftable_lookup_v4(group, IP_HOST_MASK, 0,
6371 6371 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6372 6372 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6373 6373 } else {
6374 6374 ire = ire_ftable_lookup_v6(&v6group, &ipv6_all_ones, 0,
6375 6375 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6376 6376 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6377 6377 }
6378 6378 if (ire != NULL) {
6379 6379 if (ire->ire_flags & RTF_MULTIRT) {
6380 6380 error = ip_multirt_apply_membership(optfn, ire, connp,
6381 6381 checkonly, &v6group, fmode, &ipv6_all_zeros);
6382 6382 done = B_TRUE;
6383 6383 }
6384 6384 ire_refrele(ire);
6385 6385 }
6386 6386
6387 6387 if (!done) {
6388 6388 error = optfn(connp, checkonly, &v6group, ifaddr, ifindex,
6389 6389 fmode, &ipv6_all_zeros);
6390 6390 }
6391 6391 return (error);
6392 6392 }
6393 6393
6394 6394 /*
6395 6395 * Set socket options for joining and leaving multicast groups
6396 6396 * for specific sources.
6397 6397 * Common to IPv4 and IPv6; inet6 indicates the type of socket.
6398 6398 * The caller has already check that the option name is consistent with
6399 6399 * the address family of the socket.
6400 6400 */
6401 6401 int
6402 6402 ip_opt_set_multicast_sources(conn_t *connp, t_scalar_t name,
6403 6403 uchar_t *invalp, boolean_t inet6, boolean_t checkonly)
6404 6404 {
6405 6405 int *i1 = (int *)invalp;
6406 6406 int error = 0;
6407 6407 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
6408 6408 struct ip_mreq_source *imreqp;
6409 6409 struct group_source_req *gsreqp;
6410 6410 in6_addr_t v6group, v6src;
6411 6411 uint32_t ifindex;
6412 6412 ipaddr_t ifaddr;
6413 6413 boolean_t mcast_opt = B_TRUE;
6414 6414 mcast_record_t fmode;
6415 6415 ire_t *ire;
6416 6416 boolean_t done = B_FALSE;
6417 6417 int (*optfn)(conn_t *, boolean_t, const in6_addr_t *,
6418 6418 ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *);
6419 6419
6420 6420 switch (name) {
6421 6421 case IP_BLOCK_SOURCE:
6422 6422 mcast_opt = B_FALSE;
6423 6423 /* FALLTHRU */
6424 6424 case MCAST_BLOCK_SOURCE:
6425 6425 fmode = MODE_IS_EXCLUDE;
6426 6426 optfn = ip_opt_add_group;
6427 6427 break;
6428 6428
6429 6429 case IP_UNBLOCK_SOURCE:
6430 6430 mcast_opt = B_FALSE;
6431 6431 /* FALLTHRU */
6432 6432 case MCAST_UNBLOCK_SOURCE:
6433 6433 fmode = MODE_IS_EXCLUDE;
6434 6434 optfn = ip_opt_delete_group;
6435 6435 break;
6436 6436
6437 6437 case IP_ADD_SOURCE_MEMBERSHIP:
6438 6438 mcast_opt = B_FALSE;
6439 6439 /* FALLTHRU */
6440 6440 case MCAST_JOIN_SOURCE_GROUP:
6441 6441 fmode = MODE_IS_INCLUDE;
6442 6442 optfn = ip_opt_add_group;
6443 6443 break;
6444 6444
6445 6445 case IP_DROP_SOURCE_MEMBERSHIP:
6446 6446 mcast_opt = B_FALSE;
6447 6447 /* FALLTHRU */
6448 6448 case MCAST_LEAVE_SOURCE_GROUP:
6449 6449 fmode = MODE_IS_INCLUDE;
6450 6450 optfn = ip_opt_delete_group;
6451 6451 break;
6452 6452 default:
6453 6453 ASSERT(0);
6454 6454 }
6455 6455
6456 6456 if (mcast_opt) {
6457 6457 gsreqp = (struct group_source_req *)i1;
6458 6458 ifindex = gsreqp->gsr_interface;
6459 6459 if (gsreqp->gsr_group.ss_family == AF_INET) {
6460 6460 struct sockaddr_in *s;
6461 6461 s = (struct sockaddr_in *)&gsreqp->gsr_group;
6462 6462 IN6_INADDR_TO_V4MAPPED(&s->sin_addr, &v6group);
6463 6463 s = (struct sockaddr_in *)&gsreqp->gsr_source;
6464 6464 IN6_INADDR_TO_V4MAPPED(&s->sin_addr, &v6src);
6465 6465 } else {
6466 6466 struct sockaddr_in6 *s6;
6467 6467
6468 6468 if (!inet6)
6469 6469 return (EINVAL); /* Not on INET socket */
6470 6470
6471 6471 s6 = (struct sockaddr_in6 *)&gsreqp->gsr_group;
6472 6472 v6group = s6->sin6_addr;
6473 6473 s6 = (struct sockaddr_in6 *)&gsreqp->gsr_source;
6474 6474 v6src = s6->sin6_addr;
6475 6475 }
6476 6476 ifaddr = INADDR_ANY;
6477 6477 } else {
6478 6478 imreqp = (struct ip_mreq_source *)i1;
6479 6479 IN6_INADDR_TO_V4MAPPED(&imreqp->imr_multiaddr, &v6group);
6480 6480 IN6_INADDR_TO_V4MAPPED(&imreqp->imr_sourceaddr, &v6src);
6481 6481 ifaddr = (ipaddr_t)imreqp->imr_interface.s_addr;
6482 6482 ifindex = 0;
6483 6483 }
6484 6484
6485 6485 /*
6486 6486 * Handle src being mapped INADDR_ANY by changing it to unspecified.
6487 6487 */
6488 6488 if (IN6_IS_ADDR_V4MAPPED_ANY(&v6src))
6489 6489 v6src = ipv6_all_zeros;
6490 6490
6491 6491 /*
6492 6492 * In the multirouting case, we need to replicate
6493 6493 * the request as noted in the mcast cases above.
6494 6494 */
6495 6495 if (IN6_IS_ADDR_V4MAPPED(&v6group)) {
6496 6496 ipaddr_t group;
6497 6497
6498 6498 IN6_V4MAPPED_TO_IPADDR(&v6group, group);
6499 6499
6500 6500 ire = ire_ftable_lookup_v4(group, IP_HOST_MASK, 0,
6501 6501 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6502 6502 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6503 6503 } else {
6504 6504 ire = ire_ftable_lookup_v6(&v6group, &ipv6_all_ones, 0,
6505 6505 IRE_HOST | IRE_INTERFACE, NULL, ALL_ZONES, NULL,
6506 6506 MATCH_IRE_MASK | MATCH_IRE_TYPE, 0, ipst, NULL);
6507 6507 }
6508 6508 if (ire != NULL) {
6509 6509 if (ire->ire_flags & RTF_MULTIRT) {
6510 6510 error = ip_multirt_apply_membership(optfn, ire, connp,
6511 6511 checkonly, &v6group, fmode, &v6src);
6512 6512 done = B_TRUE;
6513 6513 }
6514 6514 ire_refrele(ire);
6515 6515 }
6516 6516 if (!done) {
6517 6517 error = optfn(connp, checkonly, &v6group, ifaddr, ifindex,
6518 6518 fmode, &v6src);
6519 6519 }
6520 6520 return (error);
6521 6521 }
6522 6522
6523 6523 /*
6524 6524 * Given a destination address and a pointer to where to put the information
6525 6525 * this routine fills in the mtuinfo.
6526 6526 * The socket must be connected.
6527 6527 * For sctp conn_faddr is the primary address.
6528 6528 */
6529 6529 int
6530 6530 ip_fill_mtuinfo(conn_t *connp, ip_xmit_attr_t *ixa, struct ip6_mtuinfo *mtuinfo)
6531 6531 {
6532 6532 uint32_t pmtu = IP_MAXPACKET;
6533 6533 uint_t scopeid;
6534 6534
6535 6535 if (IN6_IS_ADDR_UNSPECIFIED(&connp->conn_faddr_v6))
6536 6536 return (-1);
6537 6537
6538 6538 /* In case we never sent or called ip_set_destination_v4/v6 */
6539 6539 if (ixa->ixa_ire != NULL)
6540 6540 pmtu = ip_get_pmtu(ixa);
6541 6541
6542 6542 if (ixa->ixa_flags & IXAF_SCOPEID_SET)
6543 6543 scopeid = ixa->ixa_scopeid;
6544 6544 else
6545 6545 scopeid = 0;
6546 6546
6547 6547 bzero(mtuinfo, sizeof (*mtuinfo));
6548 6548 mtuinfo->ip6m_addr.sin6_family = AF_INET6;
6549 6549 mtuinfo->ip6m_addr.sin6_port = connp->conn_fport;
6550 6550 mtuinfo->ip6m_addr.sin6_addr = connp->conn_faddr_v6;
6551 6551 mtuinfo->ip6m_addr.sin6_scope_id = scopeid;
6552 6552 mtuinfo->ip6m_mtu = pmtu;
6553 6553
6554 6554 return (sizeof (struct ip6_mtuinfo));
6555 6555 }
6556 6556
6557 6557 /*
6558 6558 * When the src multihoming is changed from weak to [strong, preferred]
6559 6559 * ip_ire_rebind_walker is called to walk the list of all ire_t entries
6560 6560 * and identify routes that were created by user-applications in the
6561 6561 * unbound state (i.e., without RTA_IFP), and for which an ire_ill is not
6562 6562 * currently defined. These routes are then 'rebound', i.e., their ire_ill
6563 6563 * is selected by finding an interface route for the gateway.
6564 6564 */
6565 6565 /* ARGSUSED */
6566 6566 void
6567 6567 ip_ire_rebind_walker(ire_t *ire, void *notused)
6568 6568 {
6569 6569 if (!ire->ire_unbound || ire->ire_ill != NULL)
6570 6570 return;
6571 6571 ire_rebind(ire);
6572 6572 ire_delete(ire);
6573 6573 }
6574 6574
6575 6575 /*
6576 6576 * When the src multihoming is changed from [strong, preferred] to weak,
6577 6577 * ip_ire_unbind_walker is called to walk the list of all ire_t entries, and
6578 6578 * set any entries that were created by user-applications in the unbound state
6579 6579 * (i.e., without RTA_IFP) back to having a NULL ire_ill.
6580 6580 */
6581 6581 /* ARGSUSED */
6582 6582 void
6583 6583 ip_ire_unbind_walker(ire_t *ire, void *notused)
6584 6584 {
6585 6585 ire_t *new_ire;
6586 6586
6587 6587 if (!ire->ire_unbound || ire->ire_ill == NULL)
6588 6588 return;
6589 6589 if (ire->ire_ipversion == IPV6_VERSION) {
6590 6590 new_ire = ire_create_v6(&ire->ire_addr_v6, &ire->ire_mask_v6,
6591 6591 &ire->ire_gateway_addr_v6, ire->ire_type, NULL,
6592 6592 ire->ire_zoneid, ire->ire_flags, NULL, ire->ire_ipst);
6593 6593 } else {
6594 6594 new_ire = ire_create((uchar_t *)&ire->ire_addr,
6595 6595 (uchar_t *)&ire->ire_mask,
6596 6596 (uchar_t *)&ire->ire_gateway_addr, ire->ire_type, NULL,
6597 6597 ire->ire_zoneid, ire->ire_flags, NULL, ire->ire_ipst);
6598 6598 }
6599 6599 if (new_ire == NULL)
6600 6600 return;
6601 6601 new_ire->ire_unbound = B_TRUE;
6602 6602 /*
6603 6603 * The bound ire must first be deleted so that we don't return
6604 6604 * the existing one on the attempt to add the unbound new_ire.
6605 6605 */
6606 6606 ire_delete(ire);
6607 6607 new_ire = ire_add(new_ire);
6608 6608 if (new_ire != NULL)
6609 6609 ire_refrele(new_ire);
6610 6610 }
6611 6611
6612 6612 /*
6613 6613 * When the settings of ip*_strict_src_multihoming tunables are changed,
6614 6614 * all cached routes need to be recomputed. This recomputation needs to be
6615 6615 * done when going from weaker to stronger modes so that the cached ire
6616 6616 * for the connection does not violate the current ip*_strict_src_multihoming
6617 6617 * setting. It also needs to be done when going from stronger to weaker modes,
6618 6618 * so that we fall back to matching on the longest-matching-route (as opposed
6619 6619 * to a shorter match that may have been selected in the strong mode
6620 6620 * to satisfy src_multihoming settings).
6621 6621 *
6622 6622 * The cached ixa_ire entires for all conn_t entries are marked as
6623 6623 * "verify" so that they will be recomputed for the next packet.
6624 6624 */
6625 6625 void
6626 6626 conn_ire_revalidate(conn_t *connp, void *arg)
6627 6627 {
6628 6628 boolean_t isv6 = (boolean_t)arg;
6629 6629
6630 6630 if ((isv6 && connp->conn_ipversion != IPV6_VERSION) ||
6631 6631 (!isv6 && connp->conn_ipversion != IPV4_VERSION))
6632 6632 return;
6633 6633 connp->conn_ixa->ixa_ire_generation = IRE_GENERATION_VERIFY;
6634 6634 }
6635 6635
6636 6636 /*
6637 6637 * Handles both IPv4 and IPv6 reassembly - doing the out-of-order cases,
6638 6638 * When an ipf is passed here for the first time, if
6639 6639 * we already have in-order fragments on the queue, we convert from the fast-
6640 6640 * path reassembly scheme to the hard-case scheme. From then on, additional
6641 6641 * fragments are reassembled here. We keep track of the start and end offsets
6642 6642 * of each piece, and the number of holes in the chain. When the hole count
6643 6643 * goes to zero, we are done!
6644 6644 *
6645 6645 * The ipf_count will be updated to account for any mblk(s) added (pointed to
6646 6646 * by mp) or subtracted (freeb()ed dups), upon return the caller must update
6647 6647 * ipfb_count and ill_frag_count by the difference of ipf_count before and
6648 6648 * after the call to ip_reassemble().
6649 6649 */
6650 6650 int
6651 6651 ip_reassemble(mblk_t *mp, ipf_t *ipf, uint_t start, boolean_t more, ill_t *ill,
6652 6652 size_t msg_len)
6653 6653 {
6654 6654 uint_t end;
6655 6655 mblk_t *next_mp;
6656 6656 mblk_t *mp1;
6657 6657 uint_t offset;
6658 6658 boolean_t incr_dups = B_TRUE;
6659 6659 boolean_t offset_zero_seen = B_FALSE;
6660 6660 boolean_t pkt_boundary_checked = B_FALSE;
6661 6661
6662 6662 /* If start == 0 then ipf_nf_hdr_len has to be set. */
6663 6663 ASSERT(start != 0 || ipf->ipf_nf_hdr_len != 0);
6664 6664
6665 6665 /* Add in byte count */
6666 6666 ipf->ipf_count += msg_len;
6667 6667 if (ipf->ipf_end) {
6668 6668 /*
6669 6669 * We were part way through in-order reassembly, but now there
6670 6670 * is a hole. We walk through messages already queued, and
6671 6671 * mark them for hard case reassembly. We know that up till
6672 6672 * now they were in order starting from offset zero.
6673 6673 */
6674 6674 offset = 0;
6675 6675 for (mp1 = ipf->ipf_mp->b_cont; mp1; mp1 = mp1->b_cont) {
6676 6676 IP_REASS_SET_START(mp1, offset);
6677 6677 if (offset == 0) {
6678 6678 ASSERT(ipf->ipf_nf_hdr_len != 0);
6679 6679 offset = -ipf->ipf_nf_hdr_len;
6680 6680 }
6681 6681 offset += mp1->b_wptr - mp1->b_rptr;
6682 6682 IP_REASS_SET_END(mp1, offset);
6683 6683 }
6684 6684 /* One hole at the end. */
6685 6685 ipf->ipf_hole_cnt = 1;
6686 6686 /* Brand it as a hard case, forever. */
6687 6687 ipf->ipf_end = 0;
6688 6688 }
6689 6689 /* Walk through all the new pieces. */
6690 6690 do {
6691 6691 end = start + (mp->b_wptr - mp->b_rptr);
6692 6692 /*
6693 6693 * If start is 0, decrease 'end' only for the first mblk of
6694 6694 * the fragment. Otherwise 'end' can get wrong value in the
6695 6695 * second pass of the loop if first mblk is exactly the
6696 6696 * size of ipf_nf_hdr_len.
6697 6697 */
6698 6698 if (start == 0 && !offset_zero_seen) {
6699 6699 /* First segment */
6700 6700 ASSERT(ipf->ipf_nf_hdr_len != 0);
6701 6701 end -= ipf->ipf_nf_hdr_len;
6702 6702 offset_zero_seen = B_TRUE;
6703 6703 }
6704 6704 next_mp = mp->b_cont;
6705 6705 /*
6706 6706 * We are checking to see if there is any interesing data
6707 6707 * to process. If there isn't and the mblk isn't the
6708 6708 * one which carries the unfragmentable header then we
6709 6709 * drop it. It's possible to have just the unfragmentable
6710 6710 * header come through without any data. That needs to be
6711 6711 * saved.
6712 6712 *
6713 6713 * If the assert at the top of this function holds then the
6714 6714 * term "ipf->ipf_nf_hdr_len != 0" isn't needed. This code
6715 6715 * is infrequently traveled enough that the test is left in
6716 6716 * to protect against future code changes which break that
6717 6717 * invariant.
6718 6718 */
6719 6719 if (start == end && start != 0 && ipf->ipf_nf_hdr_len != 0) {
6720 6720 /* Empty. Blast it. */
6721 6721 IP_REASS_SET_START(mp, 0);
6722 6722 IP_REASS_SET_END(mp, 0);
6723 6723 /*
6724 6724 * If the ipf points to the mblk we are about to free,
6725 6725 * update ipf to point to the next mblk (or NULL
6726 6726 * if none).
6727 6727 */
6728 6728 if (ipf->ipf_mp->b_cont == mp)
6729 6729 ipf->ipf_mp->b_cont = next_mp;
6730 6730 freeb(mp);
6731 6731 continue;
6732 6732 }
6733 6733 mp->b_cont = NULL;
6734 6734 IP_REASS_SET_START(mp, start);
6735 6735 IP_REASS_SET_END(mp, end);
6736 6736 if (!ipf->ipf_tail_mp) {
6737 6737 ipf->ipf_tail_mp = mp;
6738 6738 ipf->ipf_mp->b_cont = mp;
6739 6739 if (start == 0 || !more) {
6740 6740 ipf->ipf_hole_cnt = 1;
6741 6741 /*
6742 6742 * if the first fragment comes in more than one
6743 6743 * mblk, this loop will be executed for each
6744 6744 * mblk. Need to adjust hole count so exiting
6745 6745 * this routine will leave hole count at 1.
6746 6746 */
6747 6747 if (next_mp)
6748 6748 ipf->ipf_hole_cnt++;
6749 6749 } else
6750 6750 ipf->ipf_hole_cnt = 2;
6751 6751 continue;
6752 6752 } else if (ipf->ipf_last_frag_seen && !more &&
6753 6753 !pkt_boundary_checked) {
6754 6754 /*
6755 6755 * We check datagram boundary only if this fragment
6756 6756 * claims to be the last fragment and we have seen a
6757 6757 * last fragment in the past too. We do this only
6758 6758 * once for a given fragment.
6759 6759 *
6760 6760 * start cannot be 0 here as fragments with start=0
6761 6761 * and MF=0 gets handled as a complete packet. These
6762 6762 * fragments should not reach here.
6763 6763 */
6764 6764
6765 6765 if (start + msgdsize(mp) !=
6766 6766 IP_REASS_END(ipf->ipf_tail_mp)) {
6767 6767 /*
6768 6768 * We have two fragments both of which claim
6769 6769 * to be the last fragment but gives conflicting
6770 6770 * information about the whole datagram size.
6771 6771 * Something fishy is going on. Drop the
6772 6772 * fragment and free up the reassembly list.
6773 6773 */
6774 6774 return (IP_REASS_FAILED);
6775 6775 }
6776 6776
6777 6777 /*
6778 6778 * We shouldn't come to this code block again for this
6779 6779 * particular fragment.
6780 6780 */
6781 6781 pkt_boundary_checked = B_TRUE;
6782 6782 }
6783 6783
6784 6784 /* New stuff at or beyond tail? */
6785 6785 offset = IP_REASS_END(ipf->ipf_tail_mp);
6786 6786 if (start >= offset) {
6787 6787 if (ipf->ipf_last_frag_seen) {
6788 6788 /* current fragment is beyond last fragment */
6789 6789 return (IP_REASS_FAILED);
6790 6790 }
6791 6791 /* Link it on end. */
6792 6792 ipf->ipf_tail_mp->b_cont = mp;
6793 6793 ipf->ipf_tail_mp = mp;
6794 6794 if (more) {
6795 6795 if (start != offset)
6796 6796 ipf->ipf_hole_cnt++;
6797 6797 } else if (start == offset && next_mp == NULL)
6798 6798 ipf->ipf_hole_cnt--;
6799 6799 continue;
6800 6800 }
6801 6801 mp1 = ipf->ipf_mp->b_cont;
6802 6802 offset = IP_REASS_START(mp1);
6803 6803 /* New stuff at the front? */
6804 6804 if (start < offset) {
6805 6805 if (start == 0) {
6806 6806 if (end >= offset) {
6807 6807 /* Nailed the hole at the begining. */
6808 6808 ipf->ipf_hole_cnt--;
6809 6809 }
6810 6810 } else if (end < offset) {
6811 6811 /*
6812 6812 * A hole, stuff, and a hole where there used
6813 6813 * to be just a hole.
6814 6814 */
6815 6815 ipf->ipf_hole_cnt++;
6816 6816 }
6817 6817 mp->b_cont = mp1;
6818 6818 /* Check for overlap. */
6819 6819 while (end > offset) {
6820 6820 if (end < IP_REASS_END(mp1)) {
6821 6821 mp->b_wptr -= end - offset;
6822 6822 IP_REASS_SET_END(mp, offset);
6823 6823 BUMP_MIB(ill->ill_ip_mib,
6824 6824 ipIfStatsReasmPartDups);
6825 6825 break;
6826 6826 }
6827 6827 /* Did we cover another hole? */
6828 6828 if ((mp1->b_cont &&
6829 6829 IP_REASS_END(mp1) !=
6830 6830 IP_REASS_START(mp1->b_cont) &&
6831 6831 end >= IP_REASS_START(mp1->b_cont)) ||
6832 6832 (!ipf->ipf_last_frag_seen && !more)) {
6833 6833 ipf->ipf_hole_cnt--;
6834 6834 }
6835 6835 /* Clip out mp1. */
6836 6836 if ((mp->b_cont = mp1->b_cont) == NULL) {
6837 6837 /*
6838 6838 * After clipping out mp1, this guy
6839 6839 * is now hanging off the end.
6840 6840 */
6841 6841 ipf->ipf_tail_mp = mp;
6842 6842 }
6843 6843 IP_REASS_SET_START(mp1, 0);
6844 6844 IP_REASS_SET_END(mp1, 0);
6845 6845 /* Subtract byte count */
6846 6846 ipf->ipf_count -= mp1->b_datap->db_lim -
6847 6847 mp1->b_datap->db_base;
6848 6848 freeb(mp1);
6849 6849 BUMP_MIB(ill->ill_ip_mib,
6850 6850 ipIfStatsReasmPartDups);
6851 6851 mp1 = mp->b_cont;
6852 6852 if (!mp1)
6853 6853 break;
6854 6854 offset = IP_REASS_START(mp1);
6855 6855 }
6856 6856 ipf->ipf_mp->b_cont = mp;
6857 6857 continue;
6858 6858 }
6859 6859 /*
6860 6860 * The new piece starts somewhere between the start of the head
6861 6861 * and before the end of the tail.
6862 6862 */
6863 6863 for (; mp1; mp1 = mp1->b_cont) {
6864 6864 offset = IP_REASS_END(mp1);
6865 6865 if (start < offset) {
6866 6866 if (end <= offset) {
6867 6867 /* Nothing new. */
6868 6868 IP_REASS_SET_START(mp, 0);
6869 6869 IP_REASS_SET_END(mp, 0);
6870 6870 /* Subtract byte count */
6871 6871 ipf->ipf_count -= mp->b_datap->db_lim -
6872 6872 mp->b_datap->db_base;
6873 6873 if (incr_dups) {
6874 6874 ipf->ipf_num_dups++;
6875 6875 incr_dups = B_FALSE;
6876 6876 }
6877 6877 freeb(mp);
6878 6878 BUMP_MIB(ill->ill_ip_mib,
6879 6879 ipIfStatsReasmDuplicates);
6880 6880 break;
6881 6881 }
6882 6882 /*
6883 6883 * Trim redundant stuff off beginning of new
6884 6884 * piece.
6885 6885 */
6886 6886 IP_REASS_SET_START(mp, offset);
6887 6887 mp->b_rptr += offset - start;
6888 6888 BUMP_MIB(ill->ill_ip_mib,
6889 6889 ipIfStatsReasmPartDups);
6890 6890 start = offset;
6891 6891 if (!mp1->b_cont) {
6892 6892 /*
6893 6893 * After trimming, this guy is now
6894 6894 * hanging off the end.
6895 6895 */
6896 6896 mp1->b_cont = mp;
6897 6897 ipf->ipf_tail_mp = mp;
6898 6898 if (!more) {
6899 6899 ipf->ipf_hole_cnt--;
6900 6900 }
6901 6901 break;
6902 6902 }
6903 6903 }
6904 6904 if (start >= IP_REASS_START(mp1->b_cont))
6905 6905 continue;
6906 6906 /* Fill a hole */
6907 6907 if (start > offset)
6908 6908 ipf->ipf_hole_cnt++;
6909 6909 mp->b_cont = mp1->b_cont;
6910 6910 mp1->b_cont = mp;
6911 6911 mp1 = mp->b_cont;
6912 6912 offset = IP_REASS_START(mp1);
6913 6913 if (end >= offset) {
6914 6914 ipf->ipf_hole_cnt--;
6915 6915 /* Check for overlap. */
6916 6916 while (end > offset) {
6917 6917 if (end < IP_REASS_END(mp1)) {
6918 6918 mp->b_wptr -= end - offset;
6919 6919 IP_REASS_SET_END(mp, offset);
6920 6920 /*
6921 6921 * TODO we might bump
6922 6922 * this up twice if there is
6923 6923 * overlap at both ends.
6924 6924 */
6925 6925 BUMP_MIB(ill->ill_ip_mib,
6926 6926 ipIfStatsReasmPartDups);
6927 6927 break;
6928 6928 }
6929 6929 /* Did we cover another hole? */
6930 6930 if ((mp1->b_cont &&
6931 6931 IP_REASS_END(mp1)
6932 6932 != IP_REASS_START(mp1->b_cont) &&
6933 6933 end >=
6934 6934 IP_REASS_START(mp1->b_cont)) ||
6935 6935 (!ipf->ipf_last_frag_seen &&
6936 6936 !more)) {
6937 6937 ipf->ipf_hole_cnt--;
6938 6938 }
6939 6939 /* Clip out mp1. */
6940 6940 if ((mp->b_cont = mp1->b_cont) ==
6941 6941 NULL) {
6942 6942 /*
6943 6943 * After clipping out mp1,
6944 6944 * this guy is now hanging
6945 6945 * off the end.
6946 6946 */
6947 6947 ipf->ipf_tail_mp = mp;
6948 6948 }
6949 6949 IP_REASS_SET_START(mp1, 0);
6950 6950 IP_REASS_SET_END(mp1, 0);
6951 6951 /* Subtract byte count */
6952 6952 ipf->ipf_count -=
6953 6953 mp1->b_datap->db_lim -
6954 6954 mp1->b_datap->db_base;
6955 6955 freeb(mp1);
6956 6956 BUMP_MIB(ill->ill_ip_mib,
6957 6957 ipIfStatsReasmPartDups);
6958 6958 mp1 = mp->b_cont;
6959 6959 if (!mp1)
6960 6960 break;
6961 6961 offset = IP_REASS_START(mp1);
6962 6962 }
6963 6963 }
6964 6964 break;
6965 6965 }
6966 6966 } while (start = end, mp = next_mp);
6967 6967
6968 6968 /* Fragment just processed could be the last one. Remember this fact */
6969 6969 if (!more)
6970 6970 ipf->ipf_last_frag_seen = B_TRUE;
6971 6971
6972 6972 /* Still got holes? */
6973 6973 if (ipf->ipf_hole_cnt)
6974 6974 return (IP_REASS_PARTIAL);
6975 6975 /* Clean up overloaded fields to avoid upstream disasters. */
6976 6976 for (mp1 = ipf->ipf_mp->b_cont; mp1; mp1 = mp1->b_cont) {
6977 6977 IP_REASS_SET_START(mp1, 0);
6978 6978 IP_REASS_SET_END(mp1, 0);
6979 6979 }
6980 6980 return (IP_REASS_COMPLETE);
6981 6981 }
6982 6982
6983 6983 /*
6984 6984 * Fragmentation reassembly. Each ILL has a hash table for
6985 6985 * queuing packets undergoing reassembly for all IPIFs
6986 6986 * associated with the ILL. The hash is based on the packet
6987 6987 * IP ident field. The ILL frag hash table was allocated
6988 6988 * as a timer block at the time the ILL was created. Whenever
6989 6989 * there is anything on the reassembly queue, the timer will
6990 6990 * be running. Returns the reassembled packet if reassembly completes.
6991 6991 */
6992 6992 mblk_t *
6993 6993 ip_input_fragment(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
6994 6994 {
6995 6995 uint32_t frag_offset_flags;
6996 6996 mblk_t *t_mp;
6997 6997 ipaddr_t dst;
6998 6998 uint8_t proto = ipha->ipha_protocol;
6999 6999 uint32_t sum_val;
7000 7000 uint16_t sum_flags;
7001 7001 ipf_t *ipf;
7002 7002 ipf_t **ipfp;
7003 7003 ipfb_t *ipfb;
7004 7004 uint16_t ident;
7005 7005 uint32_t offset;
7006 7006 ipaddr_t src;
7007 7007 uint_t hdr_length;
7008 7008 uint32_t end;
7009 7009 mblk_t *mp1;
7010 7010 mblk_t *tail_mp;
7011 7011 size_t count;
7012 7012 size_t msg_len;
7013 7013 uint8_t ecn_info = 0;
7014 7014 uint32_t packet_size;
7015 7015 boolean_t pruned = B_FALSE;
7016 7016 ill_t *ill = ira->ira_ill;
7017 7017 ip_stack_t *ipst = ill->ill_ipst;
7018 7018
7019 7019 /*
7020 7020 * Drop the fragmented as early as possible, if
7021 7021 * we don't have resource(s) to re-assemble.
7022 7022 */
7023 7023 if (ipst->ips_ip_reass_queue_bytes == 0) {
7024 7024 freemsg(mp);
7025 7025 return (NULL);
7026 7026 }
7027 7027
7028 7028 /* Check for fragmentation offset; return if there's none */
7029 7029 if ((frag_offset_flags = ntohs(ipha->ipha_fragment_offset_and_flags) &
7030 7030 (IPH_MF | IPH_OFFSET)) == 0)
7031 7031 return (mp);
7032 7032
7033 7033 /*
7034 7034 * We utilize hardware computed checksum info only for UDP since
7035 7035 * IP fragmentation is a normal occurrence for the protocol. In
7036 7036 * addition, checksum offload support for IP fragments carrying
7037 7037 * UDP payload is commonly implemented across network adapters.
7038 7038 */
7039 7039 ASSERT(ira->ira_rill != NULL);
7040 7040 if (proto == IPPROTO_UDP && dohwcksum &&
7041 7041 ILL_HCKSUM_CAPABLE(ira->ira_rill) &&
7042 7042 (DB_CKSUMFLAGS(mp) & (HCK_FULLCKSUM | HCK_PARTIALCKSUM))) {
7043 7043 mblk_t *mp1 = mp->b_cont;
7044 7044 int32_t len;
7045 7045
7046 7046 /* Record checksum information from the packet */
7047 7047 sum_val = (uint32_t)DB_CKSUM16(mp);
7048 7048 sum_flags = DB_CKSUMFLAGS(mp);
7049 7049
7050 7050 /* IP payload offset from beginning of mblk */
7051 7051 offset = ((uchar_t *)ipha + IPH_HDR_LENGTH(ipha)) - mp->b_rptr;
7052 7052
7053 7053 if ((sum_flags & HCK_PARTIALCKSUM) &&
7054 7054 (mp1 == NULL || mp1->b_cont == NULL) &&
7055 7055 offset >= DB_CKSUMSTART(mp) &&
7056 7056 ((len = offset - DB_CKSUMSTART(mp)) & 1) == 0) {
7057 7057 uint32_t adj;
7058 7058 /*
7059 7059 * Partial checksum has been calculated by hardware
7060 7060 * and attached to the packet; in addition, any
7061 7061 * prepended extraneous data is even byte aligned.
7062 7062 * If any such data exists, we adjust the checksum;
7063 7063 * this would also handle any postpended data.
7064 7064 */
7065 7065 IP_ADJCKSUM_PARTIAL(mp->b_rptr + DB_CKSUMSTART(mp),
7066 7066 mp, mp1, len, adj);
7067 7067
7068 7068 /* One's complement subtract extraneous checksum */
7069 7069 if (adj >= sum_val)
7070 7070 sum_val = ~(adj - sum_val) & 0xFFFF;
7071 7071 else
7072 7072 sum_val -= adj;
7073 7073 }
7074 7074 } else {
7075 7075 sum_val = 0;
7076 7076 sum_flags = 0;
7077 7077 }
7078 7078
7079 7079 /* Clear hardware checksumming flag */
7080 7080 DB_CKSUMFLAGS(mp) = 0;
7081 7081
7082 7082 ident = ipha->ipha_ident;
7083 7083 offset = (frag_offset_flags << 3) & 0xFFFF;
7084 7084 src = ipha->ipha_src;
7085 7085 dst = ipha->ipha_dst;
7086 7086 hdr_length = IPH_HDR_LENGTH(ipha);
7087 7087 end = ntohs(ipha->ipha_length) - hdr_length;
7088 7088
7089 7089 /* If end == 0 then we have a packet with no data, so just free it */
7090 7090 if (end == 0) {
7091 7091 freemsg(mp);
7092 7092 return (NULL);
7093 7093 }
7094 7094
7095 7095 /* Record the ECN field info. */
7096 7096 ecn_info = (ipha->ipha_type_of_service & 0x3);
7097 7097 if (offset != 0) {
7098 7098 /*
7099 7099 * If this isn't the first piece, strip the header, and
7100 7100 * add the offset to the end value.
7101 7101 */
7102 7102 mp->b_rptr += hdr_length;
7103 7103 end += offset;
7104 7104 }
7105 7105
7106 7106 /* Handle vnic loopback of fragments */
7107 7107 if (mp->b_datap->db_ref > 2)
7108 7108 msg_len = 0;
7109 7109 else
7110 7110 msg_len = MBLKSIZE(mp);
7111 7111
7112 7112 tail_mp = mp;
7113 7113 while (tail_mp->b_cont != NULL) {
7114 7114 tail_mp = tail_mp->b_cont;
7115 7115 if (tail_mp->b_datap->db_ref <= 2)
7116 7116 msg_len += MBLKSIZE(tail_mp);
7117 7117 }
7118 7118
7119 7119 /* If the reassembly list for this ILL will get too big, prune it */
7120 7120 if ((msg_len + sizeof (*ipf) + ill->ill_frag_count) >=
7121 7121 ipst->ips_ip_reass_queue_bytes) {
7122 7122 DTRACE_PROBE3(ip_reass_queue_bytes, uint_t, msg_len,
7123 7123 uint_t, ill->ill_frag_count,
7124 7124 uint_t, ipst->ips_ip_reass_queue_bytes);
7125 7125 ill_frag_prune(ill,
7126 7126 (ipst->ips_ip_reass_queue_bytes < msg_len) ? 0 :
7127 7127 (ipst->ips_ip_reass_queue_bytes - msg_len));
7128 7128 pruned = B_TRUE;
7129 7129 }
7130 7130
7131 7131 ipfb = &ill->ill_frag_hash_tbl[ILL_FRAG_HASH(src, ident)];
7132 7132 mutex_enter(&ipfb->ipfb_lock);
7133 7133
7134 7134 ipfp = &ipfb->ipfb_ipf;
7135 7135 /* Try to find an existing fragment queue for this packet. */
7136 7136 for (;;) {
7137 7137 ipf = ipfp[0];
7138 7138 if (ipf != NULL) {
7139 7139 /*
7140 7140 * It has to match on ident and src/dst address.
7141 7141 */
7142 7142 if (ipf->ipf_ident == ident &&
7143 7143 ipf->ipf_src == src &&
7144 7144 ipf->ipf_dst == dst &&
7145 7145 ipf->ipf_protocol == proto) {
7146 7146 /*
7147 7147 * If we have received too many
7148 7148 * duplicate fragments for this packet
7149 7149 * free it.
7150 7150 */
7151 7151 if (ipf->ipf_num_dups > ip_max_frag_dups) {
7152 7152 ill_frag_free_pkts(ill, ipfb, ipf, 1);
7153 7153 freemsg(mp);
7154 7154 mutex_exit(&ipfb->ipfb_lock);
7155 7155 return (NULL);
7156 7156 }
7157 7157 /* Found it. */
7158 7158 break;
7159 7159 }
7160 7160 ipfp = &ipf->ipf_hash_next;
7161 7161 continue;
7162 7162 }
7163 7163
7164 7164 /*
7165 7165 * If we pruned the list, do we want to store this new
7166 7166 * fragment?. We apply an optimization here based on the
7167 7167 * fact that most fragments will be received in order.
7168 7168 * So if the offset of this incoming fragment is zero,
7169 7169 * it is the first fragment of a new packet. We will
7170 7170 * keep it. Otherwise drop the fragment, as we have
7171 7171 * probably pruned the packet already (since the
7172 7172 * packet cannot be found).
7173 7173 */
7174 7174 if (pruned && offset != 0) {
7175 7175 mutex_exit(&ipfb->ipfb_lock);
7176 7176 freemsg(mp);
7177 7177 return (NULL);
7178 7178 }
7179 7179
7180 7180 if (ipfb->ipfb_frag_pkts >= MAX_FRAG_PKTS(ipst)) {
7181 7181 /*
7182 7182 * Too many fragmented packets in this hash
7183 7183 * bucket. Free the oldest.
7184 7184 */
7185 7185 ill_frag_free_pkts(ill, ipfb, ipfb->ipfb_ipf, 1);
7186 7186 }
7187 7187
7188 7188 /* New guy. Allocate a frag message. */
7189 7189 mp1 = allocb(sizeof (*ipf), BPRI_MED);
7190 7190 if (mp1 == NULL) {
7191 7191 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7192 7192 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7193 7193 freemsg(mp);
7194 7194 reass_done:
7195 7195 mutex_exit(&ipfb->ipfb_lock);
7196 7196 return (NULL);
7197 7197 }
7198 7198
7199 7199 BUMP_MIB(ill->ill_ip_mib, ipIfStatsReasmReqds);
7200 7200 mp1->b_cont = mp;
7201 7201
7202 7202 /* Initialize the fragment header. */
7203 7203 ipf = (ipf_t *)mp1->b_rptr;
7204 7204 ipf->ipf_mp = mp1;
7205 7205 ipf->ipf_ptphn = ipfp;
7206 7206 ipfp[0] = ipf;
7207 7207 ipf->ipf_hash_next = NULL;
7208 7208 ipf->ipf_ident = ident;
7209 7209 ipf->ipf_protocol = proto;
7210 7210 ipf->ipf_src = src;
7211 7211 ipf->ipf_dst = dst;
7212 7212 ipf->ipf_nf_hdr_len = 0;
7213 7213 /* Record reassembly start time. */
7214 7214 ipf->ipf_timestamp = gethrestime_sec();
7215 7215 /* Record ipf generation and account for frag header */
7216 7216 ipf->ipf_gen = ill->ill_ipf_gen++;
7217 7217 ipf->ipf_count = MBLKSIZE(mp1);
7218 7218 ipf->ipf_last_frag_seen = B_FALSE;
7219 7219 ipf->ipf_ecn = ecn_info;
7220 7220 ipf->ipf_num_dups = 0;
7221 7221 ipfb->ipfb_frag_pkts++;
7222 7222 ipf->ipf_checksum = 0;
7223 7223 ipf->ipf_checksum_flags = 0;
7224 7224
7225 7225 /* Store checksum value in fragment header */
7226 7226 if (sum_flags != 0) {
7227 7227 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7228 7228 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7229 7229 ipf->ipf_checksum = sum_val;
7230 7230 ipf->ipf_checksum_flags = sum_flags;
7231 7231 }
7232 7232
7233 7233 /*
7234 7234 * We handle reassembly two ways. In the easy case,
7235 7235 * where all the fragments show up in order, we do
7236 7236 * minimal bookkeeping, and just clip new pieces on
7237 7237 * the end. If we ever see a hole, then we go off
7238 7238 * to ip_reassemble which has to mark the pieces and
7239 7239 * keep track of the number of holes, etc. Obviously,
7240 7240 * the point of having both mechanisms is so we can
7241 7241 * handle the easy case as efficiently as possible.
7242 7242 */
7243 7243 if (offset == 0) {
7244 7244 /* Easy case, in-order reassembly so far. */
7245 7245 ipf->ipf_count += msg_len;
7246 7246 ipf->ipf_tail_mp = tail_mp;
7247 7247 /*
7248 7248 * Keep track of next expected offset in
7249 7249 * ipf_end.
7250 7250 */
7251 7251 ipf->ipf_end = end;
7252 7252 ipf->ipf_nf_hdr_len = hdr_length;
7253 7253 } else {
7254 7254 /* Hard case, hole at the beginning. */
7255 7255 ipf->ipf_tail_mp = NULL;
7256 7256 /*
7257 7257 * ipf_end == 0 means that we have given up
7258 7258 * on easy reassembly.
7259 7259 */
7260 7260 ipf->ipf_end = 0;
7261 7261
7262 7262 /* Forget checksum offload from now on */
7263 7263 ipf->ipf_checksum_flags = 0;
7264 7264
7265 7265 /*
7266 7266 * ipf_hole_cnt is set by ip_reassemble.
7267 7267 * ipf_count is updated by ip_reassemble.
7268 7268 * No need to check for return value here
7269 7269 * as we don't expect reassembly to complete
7270 7270 * or fail for the first fragment itself.
7271 7271 */
7272 7272 (void) ip_reassemble(mp, ipf,
7273 7273 (frag_offset_flags & IPH_OFFSET) << 3,
7274 7274 (frag_offset_flags & IPH_MF), ill, msg_len);
7275 7275 }
7276 7276 /* Update per ipfb and ill byte counts */
7277 7277 ipfb->ipfb_count += ipf->ipf_count;
7278 7278 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7279 7279 atomic_add_32(&ill->ill_frag_count, ipf->ipf_count);
7280 7280 /* If the frag timer wasn't already going, start it. */
7281 7281 mutex_enter(&ill->ill_lock);
7282 7282 ill_frag_timer_start(ill);
7283 7283 mutex_exit(&ill->ill_lock);
7284 7284 goto reass_done;
7285 7285 }
7286 7286
7287 7287 /*
7288 7288 * If the packet's flag has changed (it could be coming up
7289 7289 * from an interface different than the previous, therefore
7290 7290 * possibly different checksum capability), then forget about
7291 7291 * any stored checksum states. Otherwise add the value to
7292 7292 * the existing one stored in the fragment header.
7293 7293 */
7294 7294 if (sum_flags != 0 && sum_flags == ipf->ipf_checksum_flags) {
7295 7295 sum_val += ipf->ipf_checksum;
7296 7296 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7297 7297 sum_val = (sum_val & 0xFFFF) + (sum_val >> 16);
7298 7298 ipf->ipf_checksum = sum_val;
7299 7299 } else if (ipf->ipf_checksum_flags != 0) {
7300 7300 /* Forget checksum offload from now on */
7301 7301 ipf->ipf_checksum_flags = 0;
7302 7302 }
7303 7303
7304 7304 /*
7305 7305 * We have a new piece of a datagram which is already being
7306 7306 * reassembled. Update the ECN info if all IP fragments
7307 7307 * are ECN capable. If there is one which is not, clear
7308 7308 * all the info. If there is at least one which has CE
7309 7309 * code point, IP needs to report that up to transport.
7310 7310 */
7311 7311 if (ecn_info != IPH_ECN_NECT && ipf->ipf_ecn != IPH_ECN_NECT) {
7312 7312 if (ecn_info == IPH_ECN_CE)
7313 7313 ipf->ipf_ecn = IPH_ECN_CE;
7314 7314 } else {
7315 7315 ipf->ipf_ecn = IPH_ECN_NECT;
7316 7316 }
7317 7317 if (offset && ipf->ipf_end == offset) {
7318 7318 /* The new fragment fits at the end */
7319 7319 ipf->ipf_tail_mp->b_cont = mp;
7320 7320 /* Update the byte count */
7321 7321 ipf->ipf_count += msg_len;
7322 7322 /* Update per ipfb and ill byte counts */
7323 7323 ipfb->ipfb_count += msg_len;
7324 7324 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7325 7325 atomic_add_32(&ill->ill_frag_count, msg_len);
7326 7326 if (frag_offset_flags & IPH_MF) {
7327 7327 /* More to come. */
7328 7328 ipf->ipf_end = end;
7329 7329 ipf->ipf_tail_mp = tail_mp;
7330 7330 goto reass_done;
7331 7331 }
7332 7332 } else {
7333 7333 /* Go do the hard cases. */
7334 7334 int ret;
7335 7335
7336 7336 if (offset == 0)
7337 7337 ipf->ipf_nf_hdr_len = hdr_length;
7338 7338
7339 7339 /* Save current byte count */
7340 7340 count = ipf->ipf_count;
7341 7341 ret = ip_reassemble(mp, ipf,
7342 7342 (frag_offset_flags & IPH_OFFSET) << 3,
7343 7343 (frag_offset_flags & IPH_MF), ill, msg_len);
7344 7344 /* Count of bytes added and subtracted (freeb()ed) */
7345 7345 count = ipf->ipf_count - count;
7346 7346 if (count) {
7347 7347 /* Update per ipfb and ill byte counts */
7348 7348 ipfb->ipfb_count += count;
7349 7349 ASSERT(ipfb->ipfb_count > 0); /* Wraparound */
7350 7350 atomic_add_32(&ill->ill_frag_count, count);
7351 7351 }
7352 7352 if (ret == IP_REASS_PARTIAL) {
7353 7353 goto reass_done;
7354 7354 } else if (ret == IP_REASS_FAILED) {
7355 7355 /* Reassembly failed. Free up all resources */
7356 7356 ill_frag_free_pkts(ill, ipfb, ipf, 1);
7357 7357 for (t_mp = mp; t_mp != NULL; t_mp = t_mp->b_cont) {
7358 7358 IP_REASS_SET_START(t_mp, 0);
7359 7359 IP_REASS_SET_END(t_mp, 0);
7360 7360 }
7361 7361 freemsg(mp);
7362 7362 goto reass_done;
7363 7363 }
7364 7364 /* We will reach here iff 'ret' is IP_REASS_COMPLETE */
7365 7365 }
7366 7366 /*
7367 7367 * We have completed reassembly. Unhook the frag header from
7368 7368 * the reassembly list.
7369 7369 *
7370 7370 * Before we free the frag header, record the ECN info
7371 7371 * to report back to the transport.
7372 7372 */
7373 7373 ecn_info = ipf->ipf_ecn;
7374 7374 BUMP_MIB(ill->ill_ip_mib, ipIfStatsReasmOKs);
7375 7375 ipfp = ipf->ipf_ptphn;
7376 7376
7377 7377 /* We need to supply these to caller */
7378 7378 if ((sum_flags = ipf->ipf_checksum_flags) != 0)
7379 7379 sum_val = ipf->ipf_checksum;
7380 7380 else
7381 7381 sum_val = 0;
7382 7382
7383 7383 mp1 = ipf->ipf_mp;
7384 7384 count = ipf->ipf_count;
7385 7385 ipf = ipf->ipf_hash_next;
7386 7386 if (ipf != NULL)
7387 7387 ipf->ipf_ptphn = ipfp;
7388 7388 ipfp[0] = ipf;
7389 7389 atomic_add_32(&ill->ill_frag_count, -count);
7390 7390 ASSERT(ipfb->ipfb_count >= count);
7391 7391 ipfb->ipfb_count -= count;
7392 7392 ipfb->ipfb_frag_pkts--;
7393 7393 mutex_exit(&ipfb->ipfb_lock);
7394 7394 /* Ditch the frag header. */
7395 7395 mp = mp1->b_cont;
7396 7396
7397 7397 freeb(mp1);
7398 7398
7399 7399 /* Restore original IP length in header. */
7400 7400 packet_size = (uint32_t)msgdsize(mp);
7401 7401 if (packet_size > IP_MAXPACKET) {
7402 7402 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7403 7403 ip_drop_input("Reassembled packet too large", mp, ill);
7404 7404 freemsg(mp);
7405 7405 return (NULL);
7406 7406 }
7407 7407
7408 7408 if (DB_REF(mp) > 1) {
7409 7409 mblk_t *mp2 = copymsg(mp);
7410 7410
7411 7411 if (mp2 == NULL) {
7412 7412 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7413 7413 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7414 7414 freemsg(mp);
7415 7415 return (NULL);
7416 7416 }
7417 7417 freemsg(mp);
7418 7418 mp = mp2;
7419 7419 }
7420 7420 ipha = (ipha_t *)mp->b_rptr;
7421 7421
7422 7422 ipha->ipha_length = htons((uint16_t)packet_size);
7423 7423 /* We're now complete, zip the frag state */
7424 7424 ipha->ipha_fragment_offset_and_flags = 0;
7425 7425 /* Record the ECN info. */
7426 7426 ipha->ipha_type_of_service &= 0xFC;
7427 7427 ipha->ipha_type_of_service |= ecn_info;
7428 7428
7429 7429 /* Update the receive attributes */
7430 7430 ira->ira_pktlen = packet_size;
7431 7431 ira->ira_ip_hdr_length = IPH_HDR_LENGTH(ipha);
7432 7432
7433 7433 /* Reassembly is successful; set checksum information in packet */
7434 7434 DB_CKSUM16(mp) = (uint16_t)sum_val;
7435 7435 DB_CKSUMFLAGS(mp) = sum_flags;
7436 7436 DB_CKSUMSTART(mp) = ira->ira_ip_hdr_length;
7437 7437
7438 7438 return (mp);
7439 7439 }
7440 7440
7441 7441 /*
7442 7442 * Pullup function that should be used for IP input in order to
7443 7443 * ensure we do not loose the L2 source address; we need the l2 source
7444 7444 * address for IP_RECVSLLA and for ndp_input.
7445 7445 *
7446 7446 * We return either NULL or b_rptr.
7447 7447 */
7448 7448 void *
7449 7449 ip_pullup(mblk_t *mp, ssize_t len, ip_recv_attr_t *ira)
7450 7450 {
7451 7451 ill_t *ill = ira->ira_ill;
7452 7452
7453 7453 if (ip_rput_pullups++ == 0) {
7454 7454 (void) mi_strlog(ill->ill_rq, 1, SL_ERROR|SL_TRACE,
7455 7455 "ip_pullup: %s forced us to "
7456 7456 " pullup pkt, hdr len %ld, hdr addr %p",
7457 7457 ill->ill_name, len, (void *)mp->b_rptr);
7458 7458 }
7459 7459 if (!(ira->ira_flags & IRAF_L2SRC_SET))
7460 7460 ip_setl2src(mp, ira, ira->ira_rill);
7461 7461 ASSERT(ira->ira_flags & IRAF_L2SRC_SET);
7462 7462 if (!pullupmsg(mp, len))
7463 7463 return (NULL);
7464 7464 else
7465 7465 return (mp->b_rptr);
7466 7466 }
7467 7467
7468 7468 /*
7469 7469 * Make sure ira_l2src has an address. If we don't have one fill with zeros.
7470 7470 * When called from the ULP ira_rill will be NULL hence the caller has to
7471 7471 * pass in the ill.
7472 7472 */
7473 7473 /* ARGSUSED */
7474 7474 void
7475 7475 ip_setl2src(mblk_t *mp, ip_recv_attr_t *ira, ill_t *ill)
7476 7476 {
7477 7477 const uchar_t *addr;
7478 7478 int alen;
7479 7479
7480 7480 if (ira->ira_flags & IRAF_L2SRC_SET)
7481 7481 return;
7482 7482
7483 7483 ASSERT(ill != NULL);
7484 7484 alen = ill->ill_phys_addr_length;
7485 7485 ASSERT(alen <= sizeof (ira->ira_l2src));
7486 7486 if (ira->ira_mhip != NULL &&
7487 7487 (addr = ira->ira_mhip->mhi_saddr) != NULL) {
7488 7488 bcopy(addr, ira->ira_l2src, alen);
7489 7489 } else if ((ira->ira_flags & IRAF_L2SRC_LOOPBACK) &&
7490 7490 (addr = ill->ill_phys_addr) != NULL) {
7491 7491 bcopy(addr, ira->ira_l2src, alen);
7492 7492 } else {
7493 7493 bzero(ira->ira_l2src, alen);
7494 7494 }
7495 7495 ira->ira_flags |= IRAF_L2SRC_SET;
7496 7496 }
7497 7497
7498 7498 /*
7499 7499 * check ip header length and align it.
7500 7500 */
7501 7501 mblk_t *
7502 7502 ip_check_and_align_header(mblk_t *mp, uint_t min_size, ip_recv_attr_t *ira)
7503 7503 {
7504 7504 ill_t *ill = ira->ira_ill;
7505 7505 ssize_t len;
7506 7506
7507 7507 len = MBLKL(mp);
7508 7508
7509 7509 if (!OK_32PTR(mp->b_rptr))
7510 7510 IP_STAT(ill->ill_ipst, ip_notaligned);
7511 7511 else
7512 7512 IP_STAT(ill->ill_ipst, ip_recv_pullup);
7513 7513
7514 7514 /* Guard against bogus device drivers */
7515 7515 if (len < 0) {
7516 7516 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7517 7517 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7518 7518 freemsg(mp);
7519 7519 return (NULL);
7520 7520 }
7521 7521
7522 7522 if (len == 0) {
7523 7523 /* GLD sometimes sends up mblk with b_rptr == b_wptr! */
7524 7524 mblk_t *mp1 = mp->b_cont;
7525 7525
7526 7526 if (!(ira->ira_flags & IRAF_L2SRC_SET))
7527 7527 ip_setl2src(mp, ira, ira->ira_rill);
7528 7528 ASSERT(ira->ira_flags & IRAF_L2SRC_SET);
7529 7529
7530 7530 freeb(mp);
7531 7531 mp = mp1;
7532 7532 if (mp == NULL)
7533 7533 return (NULL);
7534 7534
7535 7535 if (OK_32PTR(mp->b_rptr) && MBLKL(mp) >= min_size)
7536 7536 return (mp);
7537 7537 }
7538 7538 if (ip_pullup(mp, min_size, ira) == NULL) {
7539 7539 if (msgdsize(mp) < min_size) {
7540 7540 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7541 7541 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7542 7542 } else {
7543 7543 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7544 7544 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7545 7545 }
7546 7546 freemsg(mp);
7547 7547 return (NULL);
7548 7548 }
7549 7549 return (mp);
7550 7550 }
7551 7551
7552 7552 /*
7553 7553 * Common code for IPv4 and IPv6 to check and pullup multi-mblks
7554 7554 */
7555 7555 mblk_t *
7556 7556 ip_check_length(mblk_t *mp, uchar_t *rptr, ssize_t len, uint_t pkt_len,
7557 7557 uint_t min_size, ip_recv_attr_t *ira)
7558 7558 {
7559 7559 ill_t *ill = ira->ira_ill;
7560 7560
7561 7561 /*
7562 7562 * Make sure we have data length consistent
7563 7563 * with the IP header.
7564 7564 */
7565 7565 if (mp->b_cont == NULL) {
7566 7566 /* pkt_len is based on ipha_len, not the mblk length */
7567 7567 if (pkt_len < min_size) {
7568 7568 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7569 7569 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7570 7570 freemsg(mp);
7571 7571 return (NULL);
7572 7572 }
7573 7573 if (len < 0) {
7574 7574 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
7575 7575 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
7576 7576 freemsg(mp);
7577 7577 return (NULL);
7578 7578 }
7579 7579 /* Drop any pad */
7580 7580 mp->b_wptr = rptr + pkt_len;
7581 7581 } else if ((len += msgdsize(mp->b_cont)) != 0) {
7582 7582 ASSERT(pkt_len >= min_size);
7583 7583 if (pkt_len < min_size) {
7584 7584 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7585 7585 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7586 7586 freemsg(mp);
7587 7587 return (NULL);
7588 7588 }
7589 7589 if (len < 0) {
7590 7590 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInTruncatedPkts);
7591 7591 ip_drop_input("ipIfStatsInTruncatedPkts", mp, ill);
7592 7592 freemsg(mp);
7593 7593 return (NULL);
7594 7594 }
7595 7595 /* Drop any pad */
7596 7596 (void) adjmsg(mp, -len);
7597 7597 /*
7598 7598 * adjmsg may have freed an mblk from the chain, hence
7599 7599 * invalidate any hw checksum here. This will force IP to
7600 7600 * calculate the checksum in sw, but only for this packet.
7601 7601 */
7602 7602 DB_CKSUMFLAGS(mp) = 0;
7603 7603 IP_STAT(ill->ill_ipst, ip_multimblk);
7604 7604 }
7605 7605 return (mp);
7606 7606 }
7607 7607
7608 7608 /*
7609 7609 * Check that the IPv4 opt_len is consistent with the packet and pullup
7610 7610 * the options.
7611 7611 */
7612 7612 mblk_t *
7613 7613 ip_check_optlen(mblk_t *mp, ipha_t *ipha, uint_t opt_len, uint_t pkt_len,
7614 7614 ip_recv_attr_t *ira)
7615 7615 {
7616 7616 ill_t *ill = ira->ira_ill;
7617 7617 ssize_t len;
7618 7618
7619 7619 /* Assume no IPv6 packets arrive over the IPv4 queue */
7620 7620 if (IPH_HDR_VERSION(ipha) != IPV4_VERSION) {
7621 7621 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7622 7622 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInWrongIPVersion);
7623 7623 ip_drop_input("IPvN packet on IPv4 ill", mp, ill);
7624 7624 freemsg(mp);
7625 7625 return (NULL);
7626 7626 }
7627 7627
7628 7628 if (opt_len > (15 - IP_SIMPLE_HDR_LENGTH_IN_WORDS)) {
7629 7629 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7630 7630 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7631 7631 freemsg(mp);
7632 7632 return (NULL);
7633 7633 }
7634 7634 /*
7635 7635 * Recompute complete header length and make sure we
7636 7636 * have access to all of it.
7637 7637 */
7638 7638 len = ((size_t)opt_len + IP_SIMPLE_HDR_LENGTH_IN_WORDS) << 2;
7639 7639 if (len > (mp->b_wptr - mp->b_rptr)) {
7640 7640 if (len > pkt_len) {
7641 7641 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInHdrErrors);
7642 7642 ip_drop_input("ipIfStatsInHdrErrors", mp, ill);
7643 7643 freemsg(mp);
7644 7644 return (NULL);
7645 7645 }
7646 7646 if (ip_pullup(mp, len, ira) == NULL) {
7647 7647 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
7648 7648 ip_drop_input("ipIfStatsInDiscards", mp, ill);
7649 7649 freemsg(mp);
7650 7650 return (NULL);
7651 7651 }
7652 7652 }
7653 7653 return (mp);
7654 7654 }
7655 7655
7656 7656 /*
7657 7657 * Returns a new ire, or the same ire, or NULL.
7658 7658 * If a different IRE is returned, then it is held; the caller
7659 7659 * needs to release it.
7660 7660 * In no case is there any hold/release on the ire argument.
7661 7661 */
7662 7662 ire_t *
7663 7663 ip_check_multihome(void *addr, ire_t *ire, ill_t *ill)
7664 7664 {
7665 7665 ire_t *new_ire;
7666 7666 ill_t *ire_ill;
7667 7667 uint_t ifindex;
7668 7668 ip_stack_t *ipst = ill->ill_ipst;
7669 7669 boolean_t strict_check = B_FALSE;
7670 7670
7671 7671 /*
7672 7672 * IPMP common case: if IRE and ILL are in the same group, there's no
7673 7673 * issue (e.g. packet received on an underlying interface matched an
7674 7674 * IRE_LOCAL on its associated group interface).
7675 7675 */
7676 7676 ASSERT(ire->ire_ill != NULL);
7677 7677 if (IS_IN_SAME_ILLGRP(ill, ire->ire_ill))
7678 7678 return (ire);
7679 7679
7680 7680 /*
7681 7681 * Do another ire lookup here, using the ingress ill, to see if the
7682 7682 * interface is in a usesrc group.
7683 7683 * As long as the ills belong to the same group, we don't consider
7684 7684 * them to be arriving on the wrong interface. Thus, if the switch
7685 7685 * is doing inbound load spreading, we won't drop packets when the
7686 7686 * ip*_strict_dst_multihoming switch is on.
7687 7687 * We also need to check for IPIF_UNNUMBERED point2point interfaces
7688 7688 * where the local address may not be unique. In this case we were
7689 7689 * at the mercy of the initial ire lookup and the IRE_LOCAL it
7690 7690 * actually returned. The new lookup, which is more specific, should
7691 7691 * only find the IRE_LOCAL associated with the ingress ill if one
7692 7692 * exists.
7693 7693 */
7694 7694 if (ire->ire_ipversion == IPV4_VERSION) {
7695 7695 if (ipst->ips_ip_strict_dst_multihoming)
7696 7696 strict_check = B_TRUE;
7697 7697 new_ire = ire_ftable_lookup_v4(*((ipaddr_t *)addr), 0, 0,
7698 7698 IRE_LOCAL, ill, ALL_ZONES, NULL,
7699 7699 (MATCH_IRE_TYPE|MATCH_IRE_ILL), 0, ipst, NULL);
7700 7700 } else {
7701 7701 ASSERT(!IN6_IS_ADDR_MULTICAST((in6_addr_t *)addr));
7702 7702 if (ipst->ips_ipv6_strict_dst_multihoming)
7703 7703 strict_check = B_TRUE;
7704 7704 new_ire = ire_ftable_lookup_v6((in6_addr_t *)addr, NULL, NULL,
7705 7705 IRE_LOCAL, ill, ALL_ZONES, NULL,
7706 7706 (MATCH_IRE_TYPE|MATCH_IRE_ILL), 0, ipst, NULL);
7707 7707 }
7708 7708 /*
7709 7709 * If the same ire that was returned in ip_input() is found then this
7710 7710 * is an indication that usesrc groups are in use. The packet
7711 7711 * arrived on a different ill in the group than the one associated with
7712 7712 * the destination address. If a different ire was found then the same
7713 7713 * IP address must be hosted on multiple ills. This is possible with
7714 7714 * unnumbered point2point interfaces. We switch to use this new ire in
7715 7715 * order to have accurate interface statistics.
7716 7716 */
7717 7717 if (new_ire != NULL) {
7718 7718 /* Note: held in one case but not the other? Caller handles */
7719 7719 if (new_ire != ire)
7720 7720 return (new_ire);
7721 7721 /* Unchanged */
7722 7722 ire_refrele(new_ire);
7723 7723 return (ire);
7724 7724 }
7725 7725
7726 7726 /*
7727 7727 * Chase pointers once and store locally.
7728 7728 */
7729 7729 ASSERT(ire->ire_ill != NULL);
7730 7730 ire_ill = ire->ire_ill;
7731 7731 ifindex = ill->ill_usesrc_ifindex;
7732 7732
7733 7733 /*
7734 7734 * Check if it's a legal address on the 'usesrc' interface.
7735 7735 * For IPMP data addresses the IRE_LOCAL is the upper, hence we
7736 7736 * can just check phyint_ifindex.
7737 7737 */
7738 7738 if (ifindex != 0 && ifindex == ire_ill->ill_phyint->phyint_ifindex) {
7739 7739 return (ire);
7740 7740 }
7741 7741
7742 7742 /*
7743 7743 * If the ip*_strict_dst_multihoming switch is on then we can
7744 7744 * only accept this packet if the interface is marked as routing.
7745 7745 */
7746 7746 if (!(strict_check))
7747 7747 return (ire);
7748 7748
7749 7749 if ((ill->ill_flags & ire->ire_ill->ill_flags & ILLF_ROUTER) != 0) {
7750 7750 return (ire);
7751 7751 }
7752 7752 return (NULL);
7753 7753 }
7754 7754
7755 7755 /*
7756 7756 * This function is used to construct a mac_header_info_s from a
7757 7757 * DL_UNITDATA_IND message.
7758 7758 * The address fields in the mhi structure points into the message,
7759 7759 * thus the caller can't use those fields after freeing the message.
7760 7760 *
7761 7761 * We determine whether the packet received is a non-unicast packet
7762 7762 * and in doing so, determine whether or not it is broadcast vs multicast.
7763 7763 * For it to be a broadcast packet, we must have the appropriate mblk_t
7764 7764 * hanging off the ill_t. If this is either not present or doesn't match
7765 7765 * the destination mac address in the DL_UNITDATA_IND, the packet is deemed
7766 7766 * to be multicast. Thus NICs that have no broadcast address (or no
7767 7767 * capability for one, such as point to point links) cannot return as
7768 7768 * the packet being broadcast.
7769 7769 */
7770 7770 void
7771 7771 ip_dlur_to_mhi(ill_t *ill, mblk_t *mb, struct mac_header_info_s *mhip)
7772 7772 {
7773 7773 dl_unitdata_ind_t *ind = (dl_unitdata_ind_t *)mb->b_rptr;
7774 7774 mblk_t *bmp;
7775 7775 uint_t extra_offset;
7776 7776
7777 7777 bzero(mhip, sizeof (struct mac_header_info_s));
7778 7778
7779 7779 mhip->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
7780 7780
7781 7781 if (ill->ill_sap_length < 0)
7782 7782 extra_offset = 0;
7783 7783 else
7784 7784 extra_offset = ill->ill_sap_length;
7785 7785
7786 7786 mhip->mhi_daddr = (uchar_t *)ind + ind->dl_dest_addr_offset +
7787 7787 extra_offset;
7788 7788 mhip->mhi_saddr = (uchar_t *)ind + ind->dl_src_addr_offset +
7789 7789 extra_offset;
7790 7790
7791 7791 if (!ind->dl_group_address)
7792 7792 return;
7793 7793
7794 7794 /* Multicast or broadcast */
7795 7795 mhip->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
7796 7796
7797 7797 if (ind->dl_dest_addr_offset > sizeof (*ind) &&
7798 7798 ind->dl_dest_addr_offset + ind->dl_dest_addr_length < MBLKL(mb) &&
7799 7799 (bmp = ill->ill_bcast_mp) != NULL) {
7800 7800 dl_unitdata_req_t *dlur;
7801 7801 uint8_t *bphys_addr;
7802 7802
7803 7803 dlur = (dl_unitdata_req_t *)bmp->b_rptr;
7804 7804 bphys_addr = (uchar_t *)dlur + dlur->dl_dest_addr_offset +
7805 7805 extra_offset;
7806 7806
7807 7807 if (bcmp(mhip->mhi_daddr, bphys_addr,
7808 7808 ind->dl_dest_addr_length) == 0)
7809 7809 mhip->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
7810 7810 }
7811 7811 }
7812 7812
7813 7813 /*
7814 7814 * This function is used to construct a mac_header_info_s from a
7815 7815 * M_DATA fastpath message from a DLPI driver.
7816 7816 * The address fields in the mhi structure points into the message,
7817 7817 * thus the caller can't use those fields after freeing the message.
7818 7818 *
7819 7819 * We determine whether the packet received is a non-unicast packet
7820 7820 * and in doing so, determine whether or not it is broadcast vs multicast.
7821 7821 * For it to be a broadcast packet, we must have the appropriate mblk_t
7822 7822 * hanging off the ill_t. If this is either not present or doesn't match
7823 7823 * the destination mac address in the DL_UNITDATA_IND, the packet is deemed
7824 7824 * to be multicast. Thus NICs that have no broadcast address (or no
7825 7825 * capability for one, such as point to point links) cannot return as
7826 7826 * the packet being broadcast.
7827 7827 */
7828 7828 void
7829 7829 ip_mdata_to_mhi(ill_t *ill, mblk_t *mp, struct mac_header_info_s *mhip)
7830 7830 {
7831 7831 mblk_t *bmp;
7832 7832 struct ether_header *pether;
7833 7833
7834 7834 bzero(mhip, sizeof (struct mac_header_info_s));
7835 7835
7836 7836 mhip->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
7837 7837
7838 7838 pether = (struct ether_header *)((char *)mp->b_rptr
7839 7839 - sizeof (struct ether_header));
7840 7840
7841 7841 /*
7842 7842 * Make sure the interface is an ethernet type, since we don't
7843 7843 * know the header format for anything but Ethernet. Also make
7844 7844 * sure we are pointing correctly above db_base.
7845 7845 */
7846 7846 if (ill->ill_type != IFT_ETHER)
7847 7847 return;
7848 7848
7849 7849 retry:
7850 7850 if ((uchar_t *)pether < mp->b_datap->db_base)
7851 7851 return;
7852 7852
7853 7853 /* Is there a VLAN tag? */
7854 7854 if (ill->ill_isv6) {
7855 7855 if (pether->ether_type != htons(ETHERTYPE_IPV6)) {
7856 7856 pether = (struct ether_header *)((char *)pether - 4);
7857 7857 goto retry;
7858 7858 }
7859 7859 } else {
7860 7860 if (pether->ether_type != htons(ETHERTYPE_IP)) {
7861 7861 pether = (struct ether_header *)((char *)pether - 4);
7862 7862 goto retry;
7863 7863 }
7864 7864 }
7865 7865 mhip->mhi_daddr = (uchar_t *)&pether->ether_dhost;
7866 7866 mhip->mhi_saddr = (uchar_t *)&pether->ether_shost;
7867 7867
7868 7868 if (!(mhip->mhi_daddr[0] & 0x01))
7869 7869 return;
7870 7870
7871 7871 /* Multicast or broadcast */
7872 7872 mhip->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
7873 7873
7874 7874 if ((bmp = ill->ill_bcast_mp) != NULL) {
7875 7875 dl_unitdata_req_t *dlur;
7876 7876 uint8_t *bphys_addr;
7877 7877 uint_t addrlen;
7878 7878
7879 7879 dlur = (dl_unitdata_req_t *)bmp->b_rptr;
7880 7880 addrlen = dlur->dl_dest_addr_length;
7881 7881 if (ill->ill_sap_length < 0) {
7882 7882 bphys_addr = (uchar_t *)dlur +
7883 7883 dlur->dl_dest_addr_offset;
7884 7884 addrlen += ill->ill_sap_length;
7885 7885 } else {
7886 7886 bphys_addr = (uchar_t *)dlur +
7887 7887 dlur->dl_dest_addr_offset +
7888 7888 ill->ill_sap_length;
7889 7889 addrlen -= ill->ill_sap_length;
7890 7890 }
7891 7891 if (bcmp(mhip->mhi_daddr, bphys_addr, addrlen) == 0)
7892 7892 mhip->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
7893 7893 }
7894 7894 }
7895 7895
7896 7896 /*
7897 7897 * Handle anything but M_DATA messages
7898 7898 * We see the DL_UNITDATA_IND which are part
7899 7899 * of the data path, and also the other messages from the driver.
7900 7900 */
7901 7901 void
7902 7902 ip_rput_notdata(ill_t *ill, mblk_t *mp)
7903 7903 {
7904 7904 mblk_t *first_mp;
7905 7905 struct iocblk *iocp;
7906 7906 struct mac_header_info_s mhi;
7907 7907
7908 7908 switch (DB_TYPE(mp)) {
7909 7909 case M_PROTO:
7910 7910 case M_PCPROTO: {
7911 7911 if (((dl_unitdata_ind_t *)mp->b_rptr)->dl_primitive !=
7912 7912 DL_UNITDATA_IND) {
7913 7913 /* Go handle anything other than data elsewhere. */
7914 7914 ip_rput_dlpi(ill, mp);
7915 7915 return;
7916 7916 }
7917 7917
7918 7918 first_mp = mp;
7919 7919 mp = first_mp->b_cont;
7920 7920 first_mp->b_cont = NULL;
7921 7921
7922 7922 if (mp == NULL) {
7923 7923 freeb(first_mp);
7924 7924 return;
7925 7925 }
7926 7926 ip_dlur_to_mhi(ill, first_mp, &mhi);
7927 7927 if (ill->ill_isv6)
7928 7928 ip_input_v6(ill, NULL, mp, &mhi);
7929 7929 else
7930 7930 ip_input(ill, NULL, mp, &mhi);
7931 7931
7932 7932 /* Ditch the DLPI header. */
7933 7933 freeb(first_mp);
7934 7934 return;
7935 7935 }
7936 7936 case M_IOCACK:
7937 7937 iocp = (struct iocblk *)mp->b_rptr;
7938 7938 switch (iocp->ioc_cmd) {
7939 7939 case DL_IOC_HDR_INFO:
7940 7940 ill_fastpath_ack(ill, mp);
7941 7941 return;
7942 7942 default:
7943 7943 putnext(ill->ill_rq, mp);
7944 7944 return;
7945 7945 }
7946 7946 /* FALLTHRU */
7947 7947 case M_ERROR:
7948 7948 case M_HANGUP:
7949 7949 mutex_enter(&ill->ill_lock);
7950 7950 if (ill->ill_state_flags & ILL_CONDEMNED) {
7951 7951 mutex_exit(&ill->ill_lock);
7952 7952 freemsg(mp);
7953 7953 return;
7954 7954 }
7955 7955 ill_refhold_locked(ill);
7956 7956 mutex_exit(&ill->ill_lock);
7957 7957 qwriter_ip(ill, ill->ill_rq, mp, ip_rput_other, CUR_OP,
7958 7958 B_FALSE);
7959 7959 return;
7960 7960 case M_CTL:
7961 7961 putnext(ill->ill_rq, mp);
7962 7962 return;
7963 7963 case M_IOCNAK:
7964 7964 ip1dbg(("got iocnak "));
7965 7965 iocp = (struct iocblk *)mp->b_rptr;
7966 7966 switch (iocp->ioc_cmd) {
7967 7967 case DL_IOC_HDR_INFO:
7968 7968 ip_rput_other(NULL, ill->ill_rq, mp, NULL);
7969 7969 return;
7970 7970 default:
7971 7971 break;
7972 7972 }
7973 7973 /* FALLTHRU */
7974 7974 default:
7975 7975 putnext(ill->ill_rq, mp);
7976 7976 return;
7977 7977 }
7978 7978 }
7979 7979
7980 7980 /* Read side put procedure. Packets coming from the wire arrive here. */
7981 7981 void
7982 7982 ip_rput(queue_t *q, mblk_t *mp)
7983 7983 {
7984 7984 ill_t *ill;
7985 7985 union DL_primitives *dl;
7986 7986
7987 7987 ill = (ill_t *)q->q_ptr;
7988 7988
7989 7989 if (ill->ill_state_flags & (ILL_CONDEMNED | ILL_LL_SUBNET_PENDING)) {
7990 7990 /*
7991 7991 * If things are opening or closing, only accept high-priority
7992 7992 * DLPI messages. (On open ill->ill_ipif has not yet been
7993 7993 * created; on close, things hanging off the ill may have been
7994 7994 * freed already.)
7995 7995 */
7996 7996 dl = (union DL_primitives *)mp->b_rptr;
7997 7997 if (DB_TYPE(mp) != M_PCPROTO ||
7998 7998 dl->dl_primitive == DL_UNITDATA_IND) {
7999 7999 inet_freemsg(mp);
8000 8000 return;
8001 8001 }
8002 8002 }
8003 8003 if (DB_TYPE(mp) == M_DATA) {
8004 8004 struct mac_header_info_s mhi;
8005 8005
8006 8006 ip_mdata_to_mhi(ill, mp, &mhi);
8007 8007 ip_input(ill, NULL, mp, &mhi);
8008 8008 } else {
8009 8009 ip_rput_notdata(ill, mp);
8010 8010 }
8011 8011 }
8012 8012
8013 8013 /*
8014 8014 * Move the information to a copy.
8015 8015 */
8016 8016 mblk_t *
8017 8017 ip_fix_dbref(mblk_t *mp, ip_recv_attr_t *ira)
8018 8018 {
8019 8019 mblk_t *mp1;
8020 8020 ill_t *ill = ira->ira_ill;
8021 8021 ip_stack_t *ipst = ill->ill_ipst;
8022 8022
8023 8023 IP_STAT(ipst, ip_db_ref);
8024 8024
8025 8025 /* Make sure we have ira_l2src before we loose the original mblk */
8026 8026 if (!(ira->ira_flags & IRAF_L2SRC_SET))
8027 8027 ip_setl2src(mp, ira, ira->ira_rill);
8028 8028
8029 8029 mp1 = copymsg(mp);
8030 8030 if (mp1 == NULL) {
8031 8031 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
8032 8032 ip_drop_input("ipIfStatsInDiscards", mp, ill);
8033 8033 freemsg(mp);
8034 8034 return (NULL);
8035 8035 }
8036 8036 /* preserve the hardware checksum flags and data, if present */
8037 8037 if (DB_CKSUMFLAGS(mp) != 0) {
8038 8038 DB_CKSUMFLAGS(mp1) = DB_CKSUMFLAGS(mp);
8039 8039 DB_CKSUMSTART(mp1) = DB_CKSUMSTART(mp);
8040 8040 DB_CKSUMSTUFF(mp1) = DB_CKSUMSTUFF(mp);
8041 8041 DB_CKSUMEND(mp1) = DB_CKSUMEND(mp);
8042 8042 DB_CKSUM16(mp1) = DB_CKSUM16(mp);
8043 8043 }
8044 8044 freemsg(mp);
8045 8045 return (mp1);
8046 8046 }
8047 8047
8048 8048 static void
8049 8049 ip_dlpi_error(ill_t *ill, t_uscalar_t prim, t_uscalar_t dl_err,
8050 8050 t_uscalar_t err)
8051 8051 {
8052 8052 if (dl_err == DL_SYSERR) {
8053 8053 (void) mi_strlog(ill->ill_rq, 1, SL_CONSOLE|SL_ERROR|SL_TRACE,
8054 8054 "%s: %s failed: DL_SYSERR (errno %u)\n",
8055 8055 ill->ill_name, dl_primstr(prim), err);
8056 8056 return;
8057 8057 }
8058 8058
8059 8059 (void) mi_strlog(ill->ill_rq, 1, SL_CONSOLE|SL_ERROR|SL_TRACE,
8060 8060 "%s: %s failed: %s\n", ill->ill_name, dl_primstr(prim),
8061 8061 dl_errstr(dl_err));
8062 8062 }
8063 8063
8064 8064 /*
8065 8065 * ip_rput_dlpi is called by ip_rput to handle all DLPI messages other
8066 8066 * than DL_UNITDATA_IND messages. If we need to process this message
8067 8067 * exclusively, we call qwriter_ip, in which case we also need to call
8068 8068 * ill_refhold before that, since qwriter_ip does an ill_refrele.
8069 8069 */
8070 8070 void
8071 8071 ip_rput_dlpi(ill_t *ill, mblk_t *mp)
8072 8072 {
8073 8073 dl_ok_ack_t *dloa = (dl_ok_ack_t *)mp->b_rptr;
8074 8074 dl_error_ack_t *dlea = (dl_error_ack_t *)dloa;
8075 8075 queue_t *q = ill->ill_rq;
8076 8076 t_uscalar_t prim = dloa->dl_primitive;
8077 8077 t_uscalar_t reqprim = DL_PRIM_INVAL;
8078 8078
8079 8079 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi",
8080 8080 char *, dl_primstr(prim), ill_t *, ill);
8081 8081 ip1dbg(("ip_rput_dlpi"));
8082 8082
8083 8083 /*
8084 8084 * If we received an ACK but didn't send a request for it, then it
8085 8085 * can't be part of any pending operation; discard up-front.
8086 8086 */
8087 8087 switch (prim) {
8088 8088 case DL_ERROR_ACK:
8089 8089 reqprim = dlea->dl_error_primitive;
8090 8090 ip2dbg(("ip_rput_dlpi(%s): DL_ERROR_ACK for %s (0x%x): %s "
8091 8091 "(0x%x), unix %u\n", ill->ill_name, dl_primstr(reqprim),
8092 8092 reqprim, dl_errstr(dlea->dl_errno), dlea->dl_errno,
8093 8093 dlea->dl_unix_errno));
8094 8094 break;
8095 8095 case DL_OK_ACK:
8096 8096 reqprim = dloa->dl_correct_primitive;
8097 8097 break;
8098 8098 case DL_INFO_ACK:
8099 8099 reqprim = DL_INFO_REQ;
8100 8100 break;
8101 8101 case DL_BIND_ACK:
8102 8102 reqprim = DL_BIND_REQ;
8103 8103 break;
8104 8104 case DL_PHYS_ADDR_ACK:
8105 8105 reqprim = DL_PHYS_ADDR_REQ;
8106 8106 break;
8107 8107 case DL_NOTIFY_ACK:
8108 8108 reqprim = DL_NOTIFY_REQ;
8109 8109 break;
8110 8110 case DL_CAPABILITY_ACK:
8111 8111 reqprim = DL_CAPABILITY_REQ;
8112 8112 break;
8113 8113 }
8114 8114
8115 8115 if (prim != DL_NOTIFY_IND) {
8116 8116 if (reqprim == DL_PRIM_INVAL ||
8117 8117 !ill_dlpi_pending(ill, reqprim)) {
8118 8118 /* Not a DLPI message we support or expected */
8119 8119 freemsg(mp);
8120 8120 return;
8121 8121 }
8122 8122 ip1dbg(("ip_rput: received %s for %s\n", dl_primstr(prim),
8123 8123 dl_primstr(reqprim)));
8124 8124 }
8125 8125
8126 8126 switch (reqprim) {
8127 8127 case DL_UNBIND_REQ:
8128 8128 /*
8129 8129 * NOTE: we mark the unbind as complete even if we got a
8130 8130 * DL_ERROR_ACK, since there's not much else we can do.
8131 8131 */
8132 8132 mutex_enter(&ill->ill_lock);
8133 8133 ill->ill_state_flags &= ~ILL_DL_UNBIND_IN_PROGRESS;
8134 8134 cv_signal(&ill->ill_cv);
8135 8135 mutex_exit(&ill->ill_lock);
8136 8136 break;
8137 8137
8138 8138 case DL_ENABMULTI_REQ:
8139 8139 if (prim == DL_OK_ACK) {
8140 8140 if (ill->ill_dlpi_multicast_state == IDS_INPROGRESS)
8141 8141 ill->ill_dlpi_multicast_state = IDS_OK;
8142 8142 }
8143 8143 break;
8144 8144 }
8145 8145
8146 8146 /*
8147 8147 * The message is one we're waiting for (or DL_NOTIFY_IND), but we
8148 8148 * need to become writer to continue to process it. Because an
8149 8149 * exclusive operation doesn't complete until replies to all queued
8150 8150 * DLPI messages have been received, we know we're in the middle of an
8151 8151 * exclusive operation and pass CUR_OP (except for DL_NOTIFY_IND).
8152 8152 *
8153 8153 * As required by qwriter_ip(), we refhold the ill; it will refrele.
8154 8154 * Since this is on the ill stream we unconditionally bump up the
8155 8155 * refcount without doing ILL_CAN_LOOKUP().
8156 8156 */
8157 8157 ill_refhold(ill);
8158 8158 if (prim == DL_NOTIFY_IND)
8159 8159 qwriter_ip(ill, q, mp, ip_rput_dlpi_writer, NEW_OP, B_FALSE);
8160 8160 else
8161 8161 qwriter_ip(ill, q, mp, ip_rput_dlpi_writer, CUR_OP, B_FALSE);
8162 8162 }
8163 8163
8164 8164 /*
8165 8165 * Handling of DLPI messages that require exclusive access to the ipsq.
8166 8166 *
8167 8167 * Need to do ipsq_pending_mp_get on ioctl completion, which could
8168 8168 * happen here. (along with mi_copy_done)
8169 8169 */
8170 8170 /* ARGSUSED */
8171 8171 static void
8172 8172 ip_rput_dlpi_writer(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
8173 8173 {
8174 8174 dl_ok_ack_t *dloa = (dl_ok_ack_t *)mp->b_rptr;
8175 8175 dl_error_ack_t *dlea = (dl_error_ack_t *)dloa;
8176 8176 int err = 0;
8177 8177 ill_t *ill = (ill_t *)q->q_ptr;
8178 8178 ipif_t *ipif = NULL;
8179 8179 mblk_t *mp1 = NULL;
8180 8180 conn_t *connp = NULL;
8181 8181 t_uscalar_t paddrreq;
8182 8182 mblk_t *mp_hw;
8183 8183 boolean_t success;
8184 8184 boolean_t ioctl_aborted = B_FALSE;
8185 8185 boolean_t log = B_TRUE;
8186 8186
8187 8187 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer",
8188 8188 char *, dl_primstr(dloa->dl_primitive), ill_t *, ill);
8189 8189
8190 8190 ip1dbg(("ip_rput_dlpi_writer .."));
8191 8191 ASSERT(ipsq->ipsq_xop == ill->ill_phyint->phyint_ipsq->ipsq_xop);
8192 8192 ASSERT(IAM_WRITER_ILL(ill));
8193 8193
8194 8194 ipif = ipsq->ipsq_xop->ipx_pending_ipif;
8195 8195 /*
8196 8196 * The current ioctl could have been aborted by the user and a new
8197 8197 * ioctl to bring up another ill could have started. We could still
8198 8198 * get a response from the driver later.
8199 8199 */
8200 8200 if (ipif != NULL && ipif->ipif_ill != ill)
8201 8201 ioctl_aborted = B_TRUE;
8202 8202
8203 8203 switch (dloa->dl_primitive) {
8204 8204 case DL_ERROR_ACK:
8205 8205 ip1dbg(("ip_rput_dlpi_writer: got DL_ERROR_ACK for %s\n",
8206 8206 dl_primstr(dlea->dl_error_primitive)));
8207 8207
8208 8208 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer error",
8209 8209 char *, dl_primstr(dlea->dl_error_primitive),
8210 8210 ill_t *, ill);
8211 8211
8212 8212 switch (dlea->dl_error_primitive) {
8213 8213 case DL_DISABMULTI_REQ:
8214 8214 ill_dlpi_done(ill, dlea->dl_error_primitive);
8215 8215 break;
8216 8216 case DL_PROMISCON_REQ:
8217 8217 case DL_PROMISCOFF_REQ:
8218 8218 case DL_UNBIND_REQ:
8219 8219 case DL_ATTACH_REQ:
8220 8220 case DL_INFO_REQ:
8221 8221 ill_dlpi_done(ill, dlea->dl_error_primitive);
8222 8222 break;
8223 8223 case DL_NOTIFY_REQ:
8224 8224 ill_dlpi_done(ill, DL_NOTIFY_REQ);
8225 8225 log = B_FALSE;
8226 8226 break;
8227 8227 case DL_PHYS_ADDR_REQ:
8228 8228 /*
8229 8229 * For IPv6 only, there are two additional
8230 8230 * phys_addr_req's sent to the driver to get the
8231 8231 * IPv6 token and lla. This allows IP to acquire
8232 8232 * the hardware address format for a given interface
8233 8233 * without having built in knowledge of the hardware
8234 8234 * address. ill_phys_addr_pend keeps track of the last
8235 8235 * DL_PAR sent so we know which response we are
8236 8236 * dealing with. ill_dlpi_done will update
8237 8237 * ill_phys_addr_pend when it sends the next req.
8238 8238 * We don't complete the IOCTL until all three DL_PARs
8239 8239 * have been attempted, so set *_len to 0 and break.
8240 8240 */
8241 8241 paddrreq = ill->ill_phys_addr_pend;
8242 8242 ill_dlpi_done(ill, DL_PHYS_ADDR_REQ);
8243 8243 if (paddrreq == DL_IPV6_TOKEN) {
8244 8244 ill->ill_token_length = 0;
8245 8245 log = B_FALSE;
8246 8246 break;
8247 8247 } else if (paddrreq == DL_IPV6_LINK_LAYER_ADDR) {
8248 8248 ill->ill_nd_lla_len = 0;
8249 8249 log = B_FALSE;
8250 8250 break;
8251 8251 }
8252 8252 /*
8253 8253 * Something went wrong with the DL_PHYS_ADDR_REQ.
8254 8254 * We presumably have an IOCTL hanging out waiting
8255 8255 * for completion. Find it and complete the IOCTL
8256 8256 * with the error noted.
8257 8257 * However, ill_dl_phys was called on an ill queue
8258 8258 * (from SIOCSLIFNAME), thus conn_pending_ill is not
8259 8259 * set. But the ioctl is known to be pending on ill_wq.
8260 8260 */
8261 8261 if (!ill->ill_ifname_pending)
8262 8262 break;
8263 8263 ill->ill_ifname_pending = 0;
8264 8264 if (!ioctl_aborted)
8265 8265 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8266 8266 if (mp1 != NULL) {
8267 8267 /*
8268 8268 * This operation (SIOCSLIFNAME) must have
8269 8269 * happened on the ill. Assert there is no conn
8270 8270 */
8271 8271 ASSERT(connp == NULL);
8272 8272 q = ill->ill_wq;
8273 8273 }
8274 8274 break;
8275 8275 case DL_BIND_REQ:
8276 8276 ill_dlpi_done(ill, DL_BIND_REQ);
8277 8277 if (ill->ill_ifname_pending)
8278 8278 break;
8279 8279 mutex_enter(&ill->ill_lock);
8280 8280 ill->ill_state_flags &= ~ILL_DOWN_IN_PROGRESS;
8281 8281 mutex_exit(&ill->ill_lock);
8282 8282 /*
8283 8283 * Something went wrong with the bind. We presumably
8284 8284 * have an IOCTL hanging out waiting for completion.
8285 8285 * Find it, take down the interface that was coming
8286 8286 * up, and complete the IOCTL with the error noted.
8287 8287 */
8288 8288 if (!ioctl_aborted)
8289 8289 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8290 8290 if (mp1 != NULL) {
8291 8291 /*
8292 8292 * This might be a result of a DL_NOTE_REPLUMB
8293 8293 * notification. In that case, connp is NULL.
8294 8294 */
8295 8295 if (connp != NULL)
8296 8296 q = CONNP_TO_WQ(connp);
8297 8297
8298 8298 (void) ipif_down(ipif, NULL, NULL);
8299 8299 /* error is set below the switch */
8300 8300 }
8301 8301 break;
8302 8302 case DL_ENABMULTI_REQ:
8303 8303 ill_dlpi_done(ill, DL_ENABMULTI_REQ);
8304 8304
8305 8305 if (ill->ill_dlpi_multicast_state == IDS_INPROGRESS)
8306 8306 ill->ill_dlpi_multicast_state = IDS_FAILED;
8307 8307 if (ill->ill_dlpi_multicast_state == IDS_FAILED) {
8308 8308
8309 8309 printf("ip: joining multicasts failed (%d)"
8310 8310 " on %s - will use link layer "
8311 8311 "broadcasts for multicast\n",
8312 8312 dlea->dl_errno, ill->ill_name);
8313 8313
8314 8314 /*
8315 8315 * Set up for multi_bcast; We are the
8316 8316 * writer, so ok to access ill->ill_ipif
8317 8317 * without any lock.
8318 8318 */
8319 8319 mutex_enter(&ill->ill_phyint->phyint_lock);
8320 8320 ill->ill_phyint->phyint_flags |=
8321 8321 PHYI_MULTI_BCAST;
8322 8322 mutex_exit(&ill->ill_phyint->phyint_lock);
8323 8323
8324 8324 }
8325 8325 freemsg(mp); /* Don't want to pass this up */
8326 8326 return;
8327 8327 case DL_CAPABILITY_REQ:
8328 8328 ip1dbg(("ip_rput_dlpi_writer: got DL_ERROR_ACK for "
8329 8329 "DL_CAPABILITY REQ\n"));
8330 8330 if (ill->ill_dlpi_capab_state == IDCS_PROBE_SENT)
8331 8331 ill->ill_dlpi_capab_state = IDCS_FAILED;
8332 8332 ill_capability_done(ill);
8333 8333 freemsg(mp);
8334 8334 return;
8335 8335 }
8336 8336 /*
8337 8337 * Note the error for IOCTL completion (mp1 is set when
8338 8338 * ready to complete ioctl). If ill_ifname_pending_err is
8339 8339 * set, an error occured during plumbing (ill_ifname_pending),
8340 8340 * so we want to report that error.
8341 8341 *
8342 8342 * NOTE: there are two addtional DL_PHYS_ADDR_REQ's
8343 8343 * (DL_IPV6_TOKEN and DL_IPV6_LINK_LAYER_ADDR) that are
8344 8344 * expected to get errack'd if the driver doesn't support
8345 8345 * these flags (e.g. ethernet). log will be set to B_FALSE
8346 8346 * if these error conditions are encountered.
8347 8347 */
8348 8348 if (mp1 != NULL) {
8349 8349 if (ill->ill_ifname_pending_err != 0) {
8350 8350 err = ill->ill_ifname_pending_err;
8351 8351 ill->ill_ifname_pending_err = 0;
8352 8352 } else {
8353 8353 err = dlea->dl_unix_errno ?
8354 8354 dlea->dl_unix_errno : ENXIO;
8355 8355 }
8356 8356 /*
8357 8357 * If we're plumbing an interface and an error hasn't already
8358 8358 * been saved, set ill_ifname_pending_err to the error passed
8359 8359 * up. Ignore the error if log is B_FALSE (see comment above).
8360 8360 */
8361 8361 } else if (log && ill->ill_ifname_pending &&
8362 8362 ill->ill_ifname_pending_err == 0) {
8363 8363 ill->ill_ifname_pending_err = dlea->dl_unix_errno ?
8364 8364 dlea->dl_unix_errno : ENXIO;
8365 8365 }
8366 8366
8367 8367 if (log)
8368 8368 ip_dlpi_error(ill, dlea->dl_error_primitive,
8369 8369 dlea->dl_errno, dlea->dl_unix_errno);
8370 8370 break;
8371 8371 case DL_CAPABILITY_ACK:
8372 8372 ill_capability_ack(ill, mp);
8373 8373 /*
8374 8374 * The message has been handed off to ill_capability_ack
8375 8375 * and must not be freed below
8376 8376 */
8377 8377 mp = NULL;
8378 8378 break;
8379 8379
8380 8380 case DL_INFO_ACK:
8381 8381 /* Call a routine to handle this one. */
8382 8382 ill_dlpi_done(ill, DL_INFO_REQ);
8383 8383 ip_ll_subnet_defaults(ill, mp);
8384 8384 ASSERT(!MUTEX_HELD(&ill->ill_phyint->phyint_ipsq->ipsq_lock));
8385 8385 return;
8386 8386 case DL_BIND_ACK:
8387 8387 /*
8388 8388 * We should have an IOCTL waiting on this unless
8389 8389 * sent by ill_dl_phys, in which case just return
8390 8390 */
8391 8391 ill_dlpi_done(ill, DL_BIND_REQ);
8392 8392
8393 8393 if (ill->ill_ifname_pending) {
8394 8394 DTRACE_PROBE2(ip__rput__dlpi__ifname__pending,
8395 8395 ill_t *, ill, mblk_t *, mp);
8396 8396 break;
8397 8397 }
8398 8398 mutex_enter(&ill->ill_lock);
8399 8399 ill->ill_dl_up = 1;
8400 8400 ill->ill_state_flags &= ~ILL_DOWN_IN_PROGRESS;
8401 8401 mutex_exit(&ill->ill_lock);
8402 8402
8403 8403 if (!ioctl_aborted)
8404 8404 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8405 8405 if (mp1 == NULL) {
8406 8406 DTRACE_PROBE1(ip__rput__dlpi__no__mblk, ill_t *, ill);
8407 8407 break;
8408 8408 }
8409 8409 /*
8410 8410 * mp1 was added by ill_dl_up(). if that is a result of
8411 8411 * a DL_NOTE_REPLUMB notification, connp could be NULL.
8412 8412 */
8413 8413 if (connp != NULL)
8414 8414 q = CONNP_TO_WQ(connp);
8415 8415 /*
8416 8416 * We are exclusive. So nothing can change even after
8417 8417 * we get the pending mp.
8418 8418 */
8419 8419 ip1dbg(("ip_rput_dlpi: bind_ack %s\n", ill->ill_name));
8420 8420 DTRACE_PROBE1(ip__rput__dlpi__bind__ack, ill_t *, ill);
8421 8421 ill_nic_event_dispatch(ill, 0, NE_UP, NULL, 0);
8422 8422
8423 8423 /*
8424 8424 * Now bring up the resolver; when that is complete, we'll
8425 8425 * create IREs. Note that we intentionally mirror what
8426 8426 * ipif_up() would have done, because we got here by way of
8427 8427 * ill_dl_up(), which stopped ipif_up()'s processing.
8428 8428 */
8429 8429 if (ill->ill_isv6) {
8430 8430 /*
8431 8431 * v6 interfaces.
8432 8432 * Unlike ARP which has to do another bind
8433 8433 * and attach, once we get here we are
8434 8434 * done with NDP
8435 8435 */
8436 8436 (void) ipif_resolver_up(ipif, Res_act_initial);
8437 8437 if ((err = ipif_ndp_up(ipif, B_TRUE)) == 0)
8438 8438 err = ipif_up_done_v6(ipif);
8439 8439 } else if (ill->ill_net_type == IRE_IF_RESOLVER) {
8440 8440 /*
8441 8441 * ARP and other v4 external resolvers.
8442 8442 * Leave the pending mblk intact so that
8443 8443 * the ioctl completes in ip_rput().
8444 8444 */
8445 8445 if (connp != NULL)
8446 8446 mutex_enter(&connp->conn_lock);
8447 8447 mutex_enter(&ill->ill_lock);
8448 8448 success = ipsq_pending_mp_add(connp, ipif, q, mp1, 0);
8449 8449 mutex_exit(&ill->ill_lock);
8450 8450 if (connp != NULL)
8451 8451 mutex_exit(&connp->conn_lock);
8452 8452 if (success) {
8453 8453 err = ipif_resolver_up(ipif, Res_act_initial);
8454 8454 if (err == EINPROGRESS) {
8455 8455 freemsg(mp);
8456 8456 return;
8457 8457 }
8458 8458 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8459 8459 } else {
8460 8460 /* The conn has started closing */
8461 8461 err = EINTR;
8462 8462 }
8463 8463 } else {
8464 8464 /*
8465 8465 * This one is complete. Reply to pending ioctl.
8466 8466 */
8467 8467 (void) ipif_resolver_up(ipif, Res_act_initial);
8468 8468 err = ipif_up_done(ipif);
8469 8469 }
8470 8470
8471 8471 if ((err == 0) && (ill->ill_up_ipifs)) {
8472 8472 err = ill_up_ipifs(ill, q, mp1);
8473 8473 if (err == EINPROGRESS) {
8474 8474 freemsg(mp);
8475 8475 return;
8476 8476 }
8477 8477 }
8478 8478
8479 8479 /*
8480 8480 * If we have a moved ipif to bring up, and everything has
8481 8481 * succeeded to this point, bring it up on the IPMP ill.
8482 8482 * Otherwise, leave it down -- the admin can try to bring it
8483 8483 * up by hand if need be.
8484 8484 */
8485 8485 if (ill->ill_move_ipif != NULL) {
8486 8486 if (err != 0) {
8487 8487 ill->ill_move_ipif = NULL;
8488 8488 } else {
8489 8489 ipif = ill->ill_move_ipif;
8490 8490 ill->ill_move_ipif = NULL;
8491 8491 err = ipif_up(ipif, q, mp1);
8492 8492 if (err == EINPROGRESS) {
8493 8493 freemsg(mp);
8494 8494 return;
8495 8495 }
8496 8496 }
8497 8497 }
8498 8498 break;
8499 8499
8500 8500 case DL_NOTIFY_IND: {
8501 8501 dl_notify_ind_t *notify = (dl_notify_ind_t *)mp->b_rptr;
8502 8502 uint_t orig_mtu, orig_mc_mtu;
8503 8503
8504 8504 switch (notify->dl_notification) {
8505 8505 case DL_NOTE_PHYS_ADDR:
8506 8506 err = ill_set_phys_addr(ill, mp);
8507 8507 break;
8508 8508
8509 8509 case DL_NOTE_REPLUMB:
8510 8510 /*
8511 8511 * Directly return after calling ill_replumb().
8512 8512 * Note that we should not free mp as it is reused
8513 8513 * in the ill_replumb() function.
8514 8514 */
8515 8515 err = ill_replumb(ill, mp);
8516 8516 return;
8517 8517
8518 8518 case DL_NOTE_FASTPATH_FLUSH:
8519 8519 nce_flush(ill, B_FALSE);
8520 8520 break;
8521 8521
8522 8522 case DL_NOTE_SDU_SIZE:
8523 8523 case DL_NOTE_SDU_SIZE2:
8524 8524 /*
8525 8525 * The dce and fragmentation code can cope with
8526 8526 * this changing while packets are being sent.
8527 8527 * When packets are sent ip_output will discover
8528 8528 * a change.
8529 8529 *
8530 8530 * Change the MTU size of the interface.
8531 8531 */
8532 8532 mutex_enter(&ill->ill_lock);
8533 8533 orig_mtu = ill->ill_mtu;
8534 8534 orig_mc_mtu = ill->ill_mc_mtu;
8535 8535 switch (notify->dl_notification) {
8536 8536 case DL_NOTE_SDU_SIZE:
8537 8537 ill->ill_current_frag =
8538 8538 (uint_t)notify->dl_data;
8539 8539 ill->ill_mc_mtu = (uint_t)notify->dl_data;
8540 8540 break;
8541 8541 case DL_NOTE_SDU_SIZE2:
8542 8542 ill->ill_current_frag =
8543 8543 (uint_t)notify->dl_data1;
8544 8544 ill->ill_mc_mtu = (uint_t)notify->dl_data2;
8545 8545 break;
8546 8546 }
8547 8547 if (ill->ill_current_frag > ill->ill_max_frag)
8548 8548 ill->ill_max_frag = ill->ill_current_frag;
8549 8549
8550 8550 if (!(ill->ill_flags & ILLF_FIXEDMTU)) {
8551 8551 ill->ill_mtu = ill->ill_current_frag;
8552 8552
8553 8553 /*
8554 8554 * If ill_user_mtu was set (via
8555 8555 * SIOCSLIFLNKINFO), clamp ill_mtu at it.
8556 8556 */
8557 8557 if (ill->ill_user_mtu != 0 &&
8558 8558 ill->ill_user_mtu < ill->ill_mtu)
8559 8559 ill->ill_mtu = ill->ill_user_mtu;
8560 8560
8561 8561 if (ill->ill_user_mtu != 0 &&
8562 8562 ill->ill_user_mtu < ill->ill_mc_mtu)
8563 8563 ill->ill_mc_mtu = ill->ill_user_mtu;
8564 8564
8565 8565 if (ill->ill_isv6) {
8566 8566 if (ill->ill_mtu < IPV6_MIN_MTU)
8567 8567 ill->ill_mtu = IPV6_MIN_MTU;
8568 8568 if (ill->ill_mc_mtu < IPV6_MIN_MTU)
8569 8569 ill->ill_mc_mtu = IPV6_MIN_MTU;
8570 8570 } else {
8571 8571 if (ill->ill_mtu < IP_MIN_MTU)
8572 8572 ill->ill_mtu = IP_MIN_MTU;
8573 8573 if (ill->ill_mc_mtu < IP_MIN_MTU)
8574 8574 ill->ill_mc_mtu = IP_MIN_MTU;
8575 8575 }
8576 8576 } else if (ill->ill_mc_mtu > ill->ill_mtu) {
8577 8577 ill->ill_mc_mtu = ill->ill_mtu;
8578 8578 }
8579 8579
8580 8580 mutex_exit(&ill->ill_lock);
8581 8581 /*
8582 8582 * Make sure all dce_generation checks find out
8583 8583 * that ill_mtu/ill_mc_mtu has changed.
8584 8584 */
8585 8585 if (orig_mtu != ill->ill_mtu ||
8586 8586 orig_mc_mtu != ill->ill_mc_mtu) {
8587 8587 dce_increment_all_generations(ill->ill_isv6,
8588 8588 ill->ill_ipst);
8589 8589 }
8590 8590
8591 8591 /*
8592 8592 * Refresh IPMP meta-interface MTU if necessary.
8593 8593 */
8594 8594 if (IS_UNDER_IPMP(ill))
8595 8595 ipmp_illgrp_refresh_mtu(ill->ill_grp);
8596 8596 break;
8597 8597
8598 8598 case DL_NOTE_LINK_UP:
8599 8599 case DL_NOTE_LINK_DOWN: {
8600 8600 /*
8601 8601 * We are writer. ill / phyint / ipsq assocs stable.
8602 8602 * The RUNNING flag reflects the state of the link.
8603 8603 */
8604 8604 phyint_t *phyint = ill->ill_phyint;
8605 8605 uint64_t new_phyint_flags;
8606 8606 boolean_t changed = B_FALSE;
8607 8607 boolean_t went_up;
8608 8608
8609 8609 went_up = notify->dl_notification == DL_NOTE_LINK_UP;
8610 8610 mutex_enter(&phyint->phyint_lock);
8611 8611
8612 8612 new_phyint_flags = went_up ?
8613 8613 phyint->phyint_flags | PHYI_RUNNING :
8614 8614 phyint->phyint_flags & ~PHYI_RUNNING;
8615 8615
8616 8616 if (IS_IPMP(ill)) {
8617 8617 new_phyint_flags = went_up ?
8618 8618 new_phyint_flags & ~PHYI_FAILED :
8619 8619 new_phyint_flags | PHYI_FAILED;
8620 8620 }
8621 8621
8622 8622 if (new_phyint_flags != phyint->phyint_flags) {
8623 8623 phyint->phyint_flags = new_phyint_flags;
8624 8624 changed = B_TRUE;
8625 8625 }
8626 8626 mutex_exit(&phyint->phyint_lock);
8627 8627 /*
8628 8628 * ill_restart_dad handles the DAD restart and routing
8629 8629 * socket notification logic.
8630 8630 */
8631 8631 if (changed) {
8632 8632 ill_restart_dad(phyint->phyint_illv4, went_up);
8633 8633 ill_restart_dad(phyint->phyint_illv6, went_up);
8634 8634 }
8635 8635 break;
8636 8636 }
8637 8637 case DL_NOTE_PROMISC_ON_PHYS: {
8638 8638 phyint_t *phyint = ill->ill_phyint;
8639 8639
8640 8640 mutex_enter(&phyint->phyint_lock);
8641 8641 phyint->phyint_flags |= PHYI_PROMISC;
8642 8642 mutex_exit(&phyint->phyint_lock);
8643 8643 break;
8644 8644 }
8645 8645 case DL_NOTE_PROMISC_OFF_PHYS: {
8646 8646 phyint_t *phyint = ill->ill_phyint;
8647 8647
8648 8648 mutex_enter(&phyint->phyint_lock);
8649 8649 phyint->phyint_flags &= ~PHYI_PROMISC;
8650 8650 mutex_exit(&phyint->phyint_lock);
8651 8651 break;
8652 8652 }
8653 8653 case DL_NOTE_CAPAB_RENEG:
8654 8654 /*
8655 8655 * Something changed on the driver side.
8656 8656 * It wants us to renegotiate the capabilities
8657 8657 * on this ill. One possible cause is the aggregation
8658 8658 * interface under us where a port got added or
8659 8659 * went away.
8660 8660 *
8661 8661 * If the capability negotiation is already done
8662 8662 * or is in progress, reset the capabilities and
8663 8663 * mark the ill's ill_capab_reneg to be B_TRUE,
8664 8664 * so that when the ack comes back, we can start
8665 8665 * the renegotiation process.
8666 8666 *
8667 8667 * Note that if ill_capab_reneg is already B_TRUE
8668 8668 * (ill_dlpi_capab_state is IDS_UNKNOWN in this case),
8669 8669 * the capability resetting request has been sent
8670 8670 * and the renegotiation has not been started yet;
8671 8671 * nothing needs to be done in this case.
8672 8672 */
8673 8673 ipsq_current_start(ipsq, ill->ill_ipif, 0);
8674 8674 ill_capability_reset(ill, B_TRUE);
8675 8675 ipsq_current_finish(ipsq);
8676 8676 break;
8677 8677
8678 8678 case DL_NOTE_ALLOWED_IPS:
8679 8679 ill_set_allowed_ips(ill, mp);
8680 8680 break;
8681 8681 default:
8682 8682 ip0dbg(("ip_rput_dlpi_writer: unknown notification "
8683 8683 "type 0x%x for DL_NOTIFY_IND\n",
8684 8684 notify->dl_notification));
8685 8685 break;
8686 8686 }
8687 8687
8688 8688 /*
8689 8689 * As this is an asynchronous operation, we
8690 8690 * should not call ill_dlpi_done
8691 8691 */
8692 8692 break;
8693 8693 }
8694 8694 case DL_NOTIFY_ACK: {
8695 8695 dl_notify_ack_t *noteack = (dl_notify_ack_t *)mp->b_rptr;
8696 8696
8697 8697 if (noteack->dl_notifications & DL_NOTE_LINK_UP)
8698 8698 ill->ill_note_link = 1;
8699 8699 ill_dlpi_done(ill, DL_NOTIFY_REQ);
8700 8700 break;
8701 8701 }
8702 8702 case DL_PHYS_ADDR_ACK: {
8703 8703 /*
8704 8704 * As part of plumbing the interface via SIOCSLIFNAME,
8705 8705 * ill_dl_phys() will queue a series of DL_PHYS_ADDR_REQs,
8706 8706 * whose answers we receive here. As each answer is received,
8707 8707 * we call ill_dlpi_done() to dispatch the next request as
8708 8708 * we're processing the current one. Once all answers have
8709 8709 * been received, we use ipsq_pending_mp_get() to dequeue the
8710 8710 * outstanding IOCTL and reply to it. (Because ill_dl_phys()
8711 8711 * is invoked from an ill queue, conn_oper_pending_ill is not
8712 8712 * available, but we know the ioctl is pending on ill_wq.)
8713 8713 */
8714 8714 uint_t paddrlen, paddroff;
8715 8715 uint8_t *addr;
8716 8716
8717 8717 paddrreq = ill->ill_phys_addr_pend;
8718 8718 paddrlen = ((dl_phys_addr_ack_t *)mp->b_rptr)->dl_addr_length;
8719 8719 paddroff = ((dl_phys_addr_ack_t *)mp->b_rptr)->dl_addr_offset;
8720 8720 addr = mp->b_rptr + paddroff;
8721 8721
8722 8722 ill_dlpi_done(ill, DL_PHYS_ADDR_REQ);
8723 8723 if (paddrreq == DL_IPV6_TOKEN) {
8724 8724 /*
8725 8725 * bcopy to low-order bits of ill_token
8726 8726 *
8727 8727 * XXX Temporary hack - currently, all known tokens
8728 8728 * are 64 bits, so I'll cheat for the moment.
8729 8729 */
8730 8730 bcopy(addr, &ill->ill_token.s6_addr32[2], paddrlen);
8731 8731 ill->ill_token_length = paddrlen;
8732 8732 break;
8733 8733 } else if (paddrreq == DL_IPV6_LINK_LAYER_ADDR) {
8734 8734 ASSERT(ill->ill_nd_lla_mp == NULL);
8735 8735 ill_set_ndmp(ill, mp, paddroff, paddrlen);
8736 8736 mp = NULL;
8737 8737 break;
8738 8738 } else if (paddrreq == DL_CURR_DEST_ADDR) {
8739 8739 ASSERT(ill->ill_dest_addr_mp == NULL);
8740 8740 ill->ill_dest_addr_mp = mp;
8741 8741 ill->ill_dest_addr = addr;
8742 8742 mp = NULL;
8743 8743 if (ill->ill_isv6) {
8744 8744 ill_setdesttoken(ill);
8745 8745 ipif_setdestlinklocal(ill->ill_ipif);
8746 8746 }
8747 8747 break;
8748 8748 }
8749 8749
8750 8750 ASSERT(paddrreq == DL_CURR_PHYS_ADDR);
8751 8751 ASSERT(ill->ill_phys_addr_mp == NULL);
8752 8752 if (!ill->ill_ifname_pending)
8753 8753 break;
8754 8754 ill->ill_ifname_pending = 0;
8755 8755 if (!ioctl_aborted)
8756 8756 mp1 = ipsq_pending_mp_get(ipsq, &connp);
8757 8757 if (mp1 != NULL) {
8758 8758 ASSERT(connp == NULL);
8759 8759 q = ill->ill_wq;
8760 8760 }
8761 8761 /*
8762 8762 * If any error acks received during the plumbing sequence,
8763 8763 * ill_ifname_pending_err will be set. Break out and send up
8764 8764 * the error to the pending ioctl.
8765 8765 */
8766 8766 if (ill->ill_ifname_pending_err != 0) {
8767 8767 err = ill->ill_ifname_pending_err;
8768 8768 ill->ill_ifname_pending_err = 0;
8769 8769 break;
8770 8770 }
8771 8771
8772 8772 ill->ill_phys_addr_mp = mp;
8773 8773 ill->ill_phys_addr = (paddrlen == 0 ? NULL : addr);
8774 8774 mp = NULL;
8775 8775
8776 8776 /*
8777 8777 * If paddrlen or ill_phys_addr_length is zero, the DLPI
8778 8778 * provider doesn't support physical addresses. We check both
8779 8779 * paddrlen and ill_phys_addr_length because sppp (PPP) does
8780 8780 * not have physical addresses, but historically adversises a
8781 8781 * physical address length of 0 in its DL_INFO_ACK, but 6 in
8782 8782 * its DL_PHYS_ADDR_ACK.
8783 8783 */
8784 8784 if (paddrlen == 0 || ill->ill_phys_addr_length == 0) {
8785 8785 ill->ill_phys_addr = NULL;
8786 8786 } else if (paddrlen != ill->ill_phys_addr_length) {
8787 8787 ip0dbg(("DL_PHYS_ADDR_ACK: got addrlen %d, expected %d",
8788 8788 paddrlen, ill->ill_phys_addr_length));
8789 8789 err = EINVAL;
8790 8790 break;
8791 8791 }
8792 8792
8793 8793 if (ill->ill_nd_lla_mp == NULL) {
8794 8794 if ((mp_hw = copyb(ill->ill_phys_addr_mp)) == NULL) {
8795 8795 err = ENOMEM;
8796 8796 break;
8797 8797 }
8798 8798 ill_set_ndmp(ill, mp_hw, paddroff, paddrlen);
8799 8799 }
8800 8800
8801 8801 if (ill->ill_isv6) {
8802 8802 ill_setdefaulttoken(ill);
8803 8803 ipif_setlinklocal(ill->ill_ipif);
8804 8804 }
8805 8805 break;
8806 8806 }
8807 8807 case DL_OK_ACK:
8808 8808 ip2dbg(("DL_OK_ACK %s (0x%x)\n",
8809 8809 dl_primstr((int)dloa->dl_correct_primitive),
8810 8810 dloa->dl_correct_primitive));
8811 8811 DTRACE_PROBE3(ill__dlpi, char *, "ip_rput_dlpi_writer ok",
8812 8812 char *, dl_primstr(dloa->dl_correct_primitive),
8813 8813 ill_t *, ill);
8814 8814
8815 8815 switch (dloa->dl_correct_primitive) {
8816 8816 case DL_ENABMULTI_REQ:
8817 8817 case DL_DISABMULTI_REQ:
8818 8818 ill_dlpi_done(ill, dloa->dl_correct_primitive);
8819 8819 break;
8820 8820 case DL_PROMISCON_REQ:
8821 8821 case DL_PROMISCOFF_REQ:
8822 8822 case DL_UNBIND_REQ:
8823 8823 case DL_ATTACH_REQ:
8824 8824 ill_dlpi_done(ill, dloa->dl_correct_primitive);
8825 8825 break;
8826 8826 }
8827 8827 break;
8828 8828 default:
8829 8829 break;
8830 8830 }
8831 8831
8832 8832 freemsg(mp);
8833 8833 if (mp1 == NULL)
8834 8834 return;
8835 8835
8836 8836 /*
8837 8837 * The operation must complete without EINPROGRESS since
8838 8838 * ipsq_pending_mp_get() has removed the mblk (mp1). Otherwise,
8839 8839 * the operation will be stuck forever inside the IPSQ.
8840 8840 */
8841 8841 ASSERT(err != EINPROGRESS);
8842 8842
8843 8843 DTRACE_PROBE4(ipif__ioctl, char *, "ip_rput_dlpi_writer finish",
8844 8844 int, ipsq->ipsq_xop->ipx_current_ioctl, ill_t *, ill,
8845 8845 ipif_t *, NULL);
8846 8846
8847 8847 switch (ipsq->ipsq_xop->ipx_current_ioctl) {
8848 8848 case 0:
8849 8849 ipsq_current_finish(ipsq);
8850 8850 break;
8851 8851
8852 8852 case SIOCSLIFNAME:
8853 8853 case IF_UNITSEL: {
8854 8854 ill_t *ill_other = ILL_OTHER(ill);
8855 8855
8856 8856 /*
8857 8857 * If SIOCSLIFNAME or IF_UNITSEL is about to succeed, and the
8858 8858 * ill has a peer which is in an IPMP group, then place ill
8859 8859 * into the same group. One catch: although ifconfig plumbs
8860 8860 * the appropriate IPMP meta-interface prior to plumbing this
8861 8861 * ill, it is possible for multiple ifconfig applications to
8862 8862 * race (or for another application to adjust plumbing), in
8863 8863 * which case the IPMP meta-interface we need will be missing.
8864 8864 * If so, kick the phyint out of the group.
8865 8865 */
8866 8866 if (err == 0 && ill_other != NULL && IS_UNDER_IPMP(ill_other)) {
8867 8867 ipmp_grp_t *grp = ill->ill_phyint->phyint_grp;
8868 8868 ipmp_illgrp_t *illg;
8869 8869
8870 8870 illg = ill->ill_isv6 ? grp->gr_v6 : grp->gr_v4;
8871 8871 if (illg == NULL)
8872 8872 ipmp_phyint_leave_grp(ill->ill_phyint);
8873 8873 else
8874 8874 ipmp_ill_join_illgrp(ill, illg);
8875 8875 }
8876 8876
8877 8877 if (ipsq->ipsq_xop->ipx_current_ioctl == IF_UNITSEL)
8878 8878 ip_ioctl_finish(q, mp1, err, NO_COPYOUT, ipsq);
8879 8879 else
8880 8880 ip_ioctl_finish(q, mp1, err, COPYOUT, ipsq);
8881 8881 break;
8882 8882 }
8883 8883 case SIOCLIFADDIF:
8884 8884 ip_ioctl_finish(q, mp1, err, COPYOUT, ipsq);
8885 8885 break;
8886 8886
8887 8887 default:
8888 8888 ip_ioctl_finish(q, mp1, err, NO_COPYOUT, ipsq);
8889 8889 break;
8890 8890 }
8891 8891 }
8892 8892
8893 8893 /*
8894 8894 * ip_rput_other is called by ip_rput to handle messages modifying the global
8895 8895 * state in IP. If 'ipsq' is non-NULL, caller is writer on it.
8896 8896 */
8897 8897 /* ARGSUSED */
8898 8898 void
8899 8899 ip_rput_other(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
8900 8900 {
8901 8901 ill_t *ill = q->q_ptr;
8902 8902 struct iocblk *iocp;
8903 8903
8904 8904 ip1dbg(("ip_rput_other "));
8905 8905 if (ipsq != NULL) {
8906 8906 ASSERT(IAM_WRITER_IPSQ(ipsq));
8907 8907 ASSERT(ipsq->ipsq_xop ==
8908 8908 ill->ill_phyint->phyint_ipsq->ipsq_xop);
8909 8909 }
8910 8910
8911 8911 switch (mp->b_datap->db_type) {
8912 8912 case M_ERROR:
8913 8913 case M_HANGUP:
8914 8914 /*
8915 8915 * The device has a problem. We force the ILL down. It can
8916 8916 * be brought up again manually using SIOCSIFFLAGS (via
8917 8917 * ifconfig or equivalent).
8918 8918 */
8919 8919 ASSERT(ipsq != NULL);
8920 8920 if (mp->b_rptr < mp->b_wptr)
8921 8921 ill->ill_error = (int)(*mp->b_rptr & 0xFF);
8922 8922 if (ill->ill_error == 0)
8923 8923 ill->ill_error = ENXIO;
8924 8924 if (!ill_down_start(q, mp))
8925 8925 return;
8926 8926 ipif_all_down_tail(ipsq, q, mp, NULL);
8927 8927 break;
8928 8928 case M_IOCNAK: {
8929 8929 iocp = (struct iocblk *)mp->b_rptr;
8930 8930
8931 8931 ASSERT(iocp->ioc_cmd == DL_IOC_HDR_INFO);
8932 8932 /*
8933 8933 * If this was the first attempt, turn off the fastpath
8934 8934 * probing.
8935 8935 */
8936 8936 mutex_enter(&ill->ill_lock);
8937 8937 if (ill->ill_dlpi_fastpath_state == IDS_INPROGRESS) {
8938 8938 ill->ill_dlpi_fastpath_state = IDS_FAILED;
8939 8939 mutex_exit(&ill->ill_lock);
8940 8940 /*
8941 8941 * don't flush the nce_t entries: we use them
8942 8942 * as an index to the ncec itself.
8943 8943 */
8944 8944 ip1dbg(("ip_rput: DLPI fastpath off on interface %s\n",
8945 8945 ill->ill_name));
8946 8946 } else {
8947 8947 mutex_exit(&ill->ill_lock);
8948 8948 }
8949 8949 freemsg(mp);
8950 8950 break;
8951 8951 }
8952 8952 default:
8953 8953 ASSERT(0);
8954 8954 break;
8955 8955 }
8956 8956 }
8957 8957
8958 8958 /*
8959 8959 * Update any source route, record route or timestamp options
8960 8960 * When it fails it has consumed the message and BUMPed the MIB.
8961 8961 */
8962 8962 boolean_t
8963 8963 ip_forward_options(mblk_t *mp, ipha_t *ipha, ill_t *dst_ill,
8964 8964 ip_recv_attr_t *ira)
8965 8965 {
8966 8966 ipoptp_t opts;
8967 8967 uchar_t *opt;
8968 8968 uint8_t optval;
8969 8969 uint8_t optlen;
8970 8970 ipaddr_t dst;
8971 8971 ipaddr_t ifaddr;
8972 8972 uint32_t ts;
8973 8973 timestruc_t now;
8974 8974 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
8975 8975
8976 8976 ip2dbg(("ip_forward_options\n"));
8977 8977 dst = ipha->ipha_dst;
8978 8978 for (optval = ipoptp_first(&opts, ipha);
8979 8979 optval != IPOPT_EOL;
8980 8980 optval = ipoptp_next(&opts)) {
8981 8981 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
8982 8982 opt = opts.ipoptp_cur;
8983 8983 optlen = opts.ipoptp_len;
8984 8984 ip2dbg(("ip_forward_options: opt %d, len %d\n",
8985 8985 optval, opts.ipoptp_len));
8986 8986 switch (optval) {
8987 8987 uint32_t off;
8988 8988 case IPOPT_SSRR:
8989 8989 case IPOPT_LSRR:
8990 8990 /* Check if adminstratively disabled */
8991 8991 if (!ipst->ips_ip_forward_src_routed) {
8992 8992 BUMP_MIB(dst_ill->ill_ip_mib,
8993 8993 ipIfStatsForwProhibits);
8994 8994 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED",
8995 8995 mp, dst_ill);
8996 8996 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED,
8997 8997 ira);
8998 8998 return (B_FALSE);
8999 8999 }
9000 9000 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9001 9001 /*
9002 9002 * Must be partial since ip_input_options
9003 9003 * checked for strict.
9004 9004 */
9005 9005 break;
9006 9006 }
9007 9007 off = opt[IPOPT_OFFSET];
9008 9008 off--;
9009 9009 redo_srr:
9010 9010 if (optlen < IP_ADDR_LEN ||
9011 9011 off > optlen - IP_ADDR_LEN) {
9012 9012 /* End of source route */
9013 9013 ip1dbg((
9014 9014 "ip_forward_options: end of SR\n"));
9015 9015 break;
9016 9016 }
9017 9017 /* Pick a reasonable address on the outbound if */
9018 9018 ASSERT(dst_ill != NULL);
9019 9019 if (ip_select_source_v4(dst_ill, INADDR_ANY, dst,
9020 9020 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9021 9021 NULL) != 0) {
9022 9022 /* No source! Shouldn't happen */
9023 9023 ifaddr = INADDR_ANY;
9024 9024 }
9025 9025 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9026 9026 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9027 9027 ip1dbg(("ip_forward_options: next hop 0x%x\n",
9028 9028 ntohl(dst)));
9029 9029
9030 9030 /*
9031 9031 * Check if our address is present more than
9032 9032 * once as consecutive hops in source route.
9033 9033 */
9034 9034 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
9035 9035 off += IP_ADDR_LEN;
9036 9036 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9037 9037 goto redo_srr;
9038 9038 }
9039 9039 ipha->ipha_dst = dst;
9040 9040 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9041 9041 break;
9042 9042 case IPOPT_RR:
9043 9043 off = opt[IPOPT_OFFSET];
9044 9044 off--;
9045 9045 if (optlen < IP_ADDR_LEN ||
9046 9046 off > optlen - IP_ADDR_LEN) {
9047 9047 /* No more room - ignore */
9048 9048 ip1dbg((
9049 9049 "ip_forward_options: end of RR\n"));
9050 9050 break;
9051 9051 }
9052 9052 /* Pick a reasonable address on the outbound if */
9053 9053 ASSERT(dst_ill != NULL);
9054 9054 if (ip_select_source_v4(dst_ill, INADDR_ANY, dst,
9055 9055 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9056 9056 NULL) != 0) {
9057 9057 /* No source! Shouldn't happen */
9058 9058 ifaddr = INADDR_ANY;
9059 9059 }
9060 9060 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9061 9061 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9062 9062 break;
9063 9063 case IPOPT_TS:
9064 9064 /* Insert timestamp if there is room */
9065 9065 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9066 9066 case IPOPT_TS_TSONLY:
9067 9067 off = IPOPT_TS_TIMELEN;
9068 9068 break;
9069 9069 case IPOPT_TS_PRESPEC:
9070 9070 case IPOPT_TS_PRESPEC_RFC791:
9071 9071 /* Verify that the address matched */
9072 9072 off = opt[IPOPT_OFFSET] - 1;
9073 9073 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9074 9074 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9075 9075 /* Not for us */
9076 9076 break;
9077 9077 }
9078 9078 /* FALLTHRU */
9079 9079 case IPOPT_TS_TSANDADDR:
9080 9080 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9081 9081 break;
9082 9082 default:
9083 9083 /*
9084 9084 * ip_*put_options should have already
9085 9085 * dropped this packet.
9086 9086 */
9087 9087 cmn_err(CE_PANIC, "ip_forward_options: "
9088 9088 "unknown IT - bug in ip_input_options?\n");
9089 9089 return (B_TRUE); /* Keep "lint" happy */
9090 9090 }
9091 9091 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
9092 9092 /* Increase overflow counter */
9093 9093 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
9094 9094 opt[IPOPT_POS_OV_FLG] =
9095 9095 (uint8_t)((opt[IPOPT_POS_OV_FLG] & 0x0F) |
9096 9096 (off << 4));
9097 9097 break;
9098 9098 }
9099 9099 off = opt[IPOPT_OFFSET] - 1;
9100 9100 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9101 9101 case IPOPT_TS_PRESPEC:
9102 9102 case IPOPT_TS_PRESPEC_RFC791:
9103 9103 case IPOPT_TS_TSANDADDR:
9104 9104 /* Pick a reasonable addr on the outbound if */
9105 9105 ASSERT(dst_ill != NULL);
9106 9106 if (ip_select_source_v4(dst_ill, INADDR_ANY,
9107 9107 dst, INADDR_ANY, ALL_ZONES, ipst, &ifaddr,
9108 9108 NULL, NULL) != 0) {
9109 9109 /* No source! Shouldn't happen */
|
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7598 lines elided |
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9110 9110 ifaddr = INADDR_ANY;
9111 9111 }
9112 9112 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9113 9113 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9114 9114 /* FALLTHRU */
9115 9115 case IPOPT_TS_TSONLY:
9116 9116 off = opt[IPOPT_OFFSET] - 1;
9117 9117 /* Compute # of milliseconds since midnight */
9118 9118 gethrestime(&now);
9119 9119 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
9120 - now.tv_nsec / (NANOSEC / MILLISEC);
9120 + NSEC2MSEC(now.tv_nsec);
9121 9121 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
9122 9122 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
9123 9123 break;
9124 9124 }
9125 9125 break;
9126 9126 }
9127 9127 }
9128 9128 return (B_TRUE);
9129 9129 }
9130 9130
9131 9131 /*
9132 9132 * Call ill_frag_timeout to do garbage collection. ill_frag_timeout
9133 9133 * returns 'true' if there are still fragments left on the queue, in
9134 9134 * which case we restart the timer.
9135 9135 */
9136 9136 void
9137 9137 ill_frag_timer(void *arg)
9138 9138 {
9139 9139 ill_t *ill = (ill_t *)arg;
9140 9140 boolean_t frag_pending;
9141 9141 ip_stack_t *ipst = ill->ill_ipst;
9142 9142 time_t timeout;
9143 9143
9144 9144 mutex_enter(&ill->ill_lock);
9145 9145 ASSERT(!ill->ill_fragtimer_executing);
9146 9146 if (ill->ill_state_flags & ILL_CONDEMNED) {
9147 9147 ill->ill_frag_timer_id = 0;
9148 9148 mutex_exit(&ill->ill_lock);
9149 9149 return;
9150 9150 }
9151 9151 ill->ill_fragtimer_executing = 1;
9152 9152 mutex_exit(&ill->ill_lock);
9153 9153
9154 9154 timeout = (ill->ill_isv6 ? ipst->ips_ipv6_reassembly_timeout :
9155 9155 ipst->ips_ip_reassembly_timeout);
9156 9156
9157 9157 frag_pending = ill_frag_timeout(ill, timeout);
9158 9158
9159 9159 /*
9160 9160 * Restart the timer, if we have fragments pending or if someone
9161 9161 * wanted us to be scheduled again.
9162 9162 */
9163 9163 mutex_enter(&ill->ill_lock);
9164 9164 ill->ill_fragtimer_executing = 0;
9165 9165 ill->ill_frag_timer_id = 0;
9166 9166 if (frag_pending || ill->ill_fragtimer_needrestart)
9167 9167 ill_frag_timer_start(ill);
9168 9168 mutex_exit(&ill->ill_lock);
9169 9169 }
9170 9170
9171 9171 void
9172 9172 ill_frag_timer_start(ill_t *ill)
9173 9173 {
9174 9174 ip_stack_t *ipst = ill->ill_ipst;
9175 9175 clock_t timeo_ms;
9176 9176
9177 9177 ASSERT(MUTEX_HELD(&ill->ill_lock));
9178 9178
9179 9179 /* If the ill is closing or opening don't proceed */
9180 9180 if (ill->ill_state_flags & ILL_CONDEMNED)
9181 9181 return;
9182 9182
9183 9183 if (ill->ill_fragtimer_executing) {
9184 9184 /*
9185 9185 * ill_frag_timer is currently executing. Just record the
9186 9186 * the fact that we want the timer to be restarted.
9187 9187 * ill_frag_timer will post a timeout before it returns,
9188 9188 * ensuring it will be called again.
9189 9189 */
9190 9190 ill->ill_fragtimer_needrestart = 1;
9191 9191 return;
9192 9192 }
9193 9193
9194 9194 if (ill->ill_frag_timer_id == 0) {
9195 9195 timeo_ms = (ill->ill_isv6 ? ipst->ips_ipv6_reassembly_timeout :
9196 9196 ipst->ips_ip_reassembly_timeout) * SECONDS;
9197 9197
9198 9198 /*
9199 9199 * The timer is neither running nor is the timeout handler
9200 9200 * executing. Post a timeout so that ill_frag_timer will be
9201 9201 * called
9202 9202 */
9203 9203 ill->ill_frag_timer_id = timeout(ill_frag_timer, ill,
9204 9204 MSEC_TO_TICK(timeo_ms >> 1));
9205 9205 ill->ill_fragtimer_needrestart = 0;
9206 9206 }
9207 9207 }
9208 9208
9209 9209 /*
9210 9210 * Update any source route, record route or timestamp options.
9211 9211 * Check that we are at end of strict source route.
9212 9212 * The options have already been checked for sanity in ip_input_options().
9213 9213 */
9214 9214 boolean_t
9215 9215 ip_input_local_options(mblk_t *mp, ipha_t *ipha, ip_recv_attr_t *ira)
9216 9216 {
9217 9217 ipoptp_t opts;
9218 9218 uchar_t *opt;
9219 9219 uint8_t optval;
9220 9220 uint8_t optlen;
9221 9221 ipaddr_t dst;
9222 9222 ipaddr_t ifaddr;
9223 9223 uint32_t ts;
9224 9224 timestruc_t now;
9225 9225 ill_t *ill = ira->ira_ill;
9226 9226 ip_stack_t *ipst = ill->ill_ipst;
9227 9227
9228 9228 ip2dbg(("ip_input_local_options\n"));
9229 9229
9230 9230 for (optval = ipoptp_first(&opts, ipha);
9231 9231 optval != IPOPT_EOL;
9232 9232 optval = ipoptp_next(&opts)) {
9233 9233 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
9234 9234 opt = opts.ipoptp_cur;
9235 9235 optlen = opts.ipoptp_len;
9236 9236 ip2dbg(("ip_input_local_options: opt %d, len %d\n",
9237 9237 optval, optlen));
9238 9238 switch (optval) {
9239 9239 uint32_t off;
9240 9240 case IPOPT_SSRR:
9241 9241 case IPOPT_LSRR:
9242 9242 off = opt[IPOPT_OFFSET];
9243 9243 off--;
9244 9244 if (optlen < IP_ADDR_LEN ||
9245 9245 off > optlen - IP_ADDR_LEN) {
9246 9246 /* End of source route */
9247 9247 ip1dbg(("ip_input_local_options: end of SR\n"));
9248 9248 break;
9249 9249 }
9250 9250 /*
9251 9251 * This will only happen if two consecutive entries
9252 9252 * in the source route contains our address or if
9253 9253 * it is a packet with a loose source route which
9254 9254 * reaches us before consuming the whole source route
9255 9255 */
9256 9256 ip1dbg(("ip_input_local_options: not end of SR\n"));
9257 9257 if (optval == IPOPT_SSRR) {
9258 9258 goto bad_src_route;
9259 9259 }
9260 9260 /*
9261 9261 * Hack: instead of dropping the packet truncate the
9262 9262 * source route to what has been used by filling the
9263 9263 * rest with IPOPT_NOP.
9264 9264 */
9265 9265 opt[IPOPT_OLEN] = (uint8_t)off;
9266 9266 while (off < optlen) {
9267 9267 opt[off++] = IPOPT_NOP;
9268 9268 }
9269 9269 break;
9270 9270 case IPOPT_RR:
9271 9271 off = opt[IPOPT_OFFSET];
9272 9272 off--;
9273 9273 if (optlen < IP_ADDR_LEN ||
9274 9274 off > optlen - IP_ADDR_LEN) {
9275 9275 /* No more room - ignore */
9276 9276 ip1dbg((
9277 9277 "ip_input_local_options: end of RR\n"));
9278 9278 break;
9279 9279 }
9280 9280 /* Pick a reasonable address on the outbound if */
9281 9281 if (ip_select_source_v4(ill, INADDR_ANY, ipha->ipha_dst,
9282 9282 INADDR_ANY, ALL_ZONES, ipst, &ifaddr, NULL,
9283 9283 NULL) != 0) {
9284 9284 /* No source! Shouldn't happen */
9285 9285 ifaddr = INADDR_ANY;
9286 9286 }
9287 9287 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9288 9288 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9289 9289 break;
9290 9290 case IPOPT_TS:
9291 9291 /* Insert timestamp if there is romm */
9292 9292 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9293 9293 case IPOPT_TS_TSONLY:
9294 9294 off = IPOPT_TS_TIMELEN;
9295 9295 break;
9296 9296 case IPOPT_TS_PRESPEC:
9297 9297 case IPOPT_TS_PRESPEC_RFC791:
9298 9298 /* Verify that the address matched */
9299 9299 off = opt[IPOPT_OFFSET] - 1;
9300 9300 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9301 9301 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9302 9302 /* Not for us */
9303 9303 break;
9304 9304 }
9305 9305 /* FALLTHRU */
9306 9306 case IPOPT_TS_TSANDADDR:
9307 9307 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9308 9308 break;
9309 9309 default:
9310 9310 /*
9311 9311 * ip_*put_options should have already
9312 9312 * dropped this packet.
9313 9313 */
9314 9314 cmn_err(CE_PANIC, "ip_input_local_options: "
9315 9315 "unknown IT - bug in ip_input_options?\n");
9316 9316 return (B_TRUE); /* Keep "lint" happy */
9317 9317 }
9318 9318 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
9319 9319 /* Increase overflow counter */
9320 9320 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
9321 9321 opt[IPOPT_POS_OV_FLG] =
9322 9322 (uint8_t)((opt[IPOPT_POS_OV_FLG] & 0x0F) |
9323 9323 (off << 4));
9324 9324 break;
9325 9325 }
9326 9326 off = opt[IPOPT_OFFSET] - 1;
9327 9327 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9328 9328 case IPOPT_TS_PRESPEC:
9329 9329 case IPOPT_TS_PRESPEC_RFC791:
9330 9330 case IPOPT_TS_TSANDADDR:
9331 9331 /* Pick a reasonable addr on the outbound if */
9332 9332 if (ip_select_source_v4(ill, INADDR_ANY,
9333 9333 ipha->ipha_dst, INADDR_ANY, ALL_ZONES, ipst,
9334 9334 &ifaddr, NULL, NULL) != 0) {
9335 9335 /* No source! Shouldn't happen */
|
↓ open down ↓ |
205 lines elided |
↑ open up ↑ |
9336 9336 ifaddr = INADDR_ANY;
9337 9337 }
9338 9338 bcopy(&ifaddr, (char *)opt + off, IP_ADDR_LEN);
9339 9339 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
9340 9340 /* FALLTHRU */
9341 9341 case IPOPT_TS_TSONLY:
9342 9342 off = opt[IPOPT_OFFSET] - 1;
9343 9343 /* Compute # of milliseconds since midnight */
9344 9344 gethrestime(&now);
9345 9345 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
9346 - now.tv_nsec / (NANOSEC / MILLISEC);
9346 + NSEC2MSEC(now.tv_nsec);
9347 9347 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
9348 9348 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
9349 9349 break;
9350 9350 }
9351 9351 break;
9352 9352 }
9353 9353 }
9354 9354 return (B_TRUE);
9355 9355
9356 9356 bad_src_route:
9357 9357 /* make sure we clear any indication of a hardware checksum */
9358 9358 DB_CKSUMFLAGS(mp) = 0;
9359 9359 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ill);
9360 9360 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, ira);
9361 9361 return (B_FALSE);
9362 9362
9363 9363 }
9364 9364
9365 9365 /*
9366 9366 * Process IP options in an inbound packet. Always returns the nexthop.
9367 9367 * Normally this is the passed in nexthop, but if there is an option
9368 9368 * that effects the nexthop (such as a source route) that will be returned.
9369 9369 * Sets *errorp if there is an error, in which case an ICMP error has been sent
9370 9370 * and mp freed.
9371 9371 */
9372 9372 ipaddr_t
9373 9373 ip_input_options(ipha_t *ipha, ipaddr_t dst, mblk_t *mp,
9374 9374 ip_recv_attr_t *ira, int *errorp)
9375 9375 {
9376 9376 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
9377 9377 ipoptp_t opts;
9378 9378 uchar_t *opt;
9379 9379 uint8_t optval;
9380 9380 uint8_t optlen;
9381 9381 intptr_t code = 0;
9382 9382 ire_t *ire;
9383 9383
9384 9384 ip2dbg(("ip_input_options\n"));
9385 9385 *errorp = 0;
9386 9386 for (optval = ipoptp_first(&opts, ipha);
9387 9387 optval != IPOPT_EOL;
9388 9388 optval = ipoptp_next(&opts)) {
9389 9389 opt = opts.ipoptp_cur;
9390 9390 optlen = opts.ipoptp_len;
9391 9391 ip2dbg(("ip_input_options: opt %d, len %d\n",
9392 9392 optval, optlen));
9393 9393 /*
9394 9394 * Note: we need to verify the checksum before we
9395 9395 * modify anything thus this routine only extracts the next
9396 9396 * hop dst from any source route.
9397 9397 */
9398 9398 switch (optval) {
9399 9399 uint32_t off;
9400 9400 case IPOPT_SSRR:
9401 9401 case IPOPT_LSRR:
9402 9402 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
9403 9403 if (optval == IPOPT_SSRR) {
9404 9404 ip1dbg(("ip_input_options: not next"
9405 9405 " strict source route 0x%x\n",
9406 9406 ntohl(dst)));
9407 9407 code = (char *)&ipha->ipha_dst -
9408 9408 (char *)ipha;
9409 9409 goto param_prob; /* RouterReq's */
9410 9410 }
9411 9411 ip2dbg(("ip_input_options: "
9412 9412 "not next source route 0x%x\n",
9413 9413 ntohl(dst)));
9414 9414 break;
9415 9415 }
9416 9416
9417 9417 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9418 9418 ip1dbg((
9419 9419 "ip_input_options: bad option offset\n"));
9420 9420 code = (char *)&opt[IPOPT_OLEN] -
9421 9421 (char *)ipha;
9422 9422 goto param_prob;
9423 9423 }
9424 9424 off = opt[IPOPT_OFFSET];
9425 9425 off--;
9426 9426 redo_srr:
9427 9427 if (optlen < IP_ADDR_LEN ||
9428 9428 off > optlen - IP_ADDR_LEN) {
9429 9429 /* End of source route */
9430 9430 ip1dbg(("ip_input_options: end of SR\n"));
9431 9431 break;
9432 9432 }
9433 9433 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
9434 9434 ip1dbg(("ip_input_options: next hop 0x%x\n",
9435 9435 ntohl(dst)));
9436 9436
9437 9437 /*
9438 9438 * Check if our address is present more than
9439 9439 * once as consecutive hops in source route.
9440 9440 * XXX verify per-interface ip_forwarding
9441 9441 * for source route?
9442 9442 */
9443 9443 if (ip_type_v4(dst, ipst) == IRE_LOCAL) {
9444 9444 off += IP_ADDR_LEN;
9445 9445 goto redo_srr;
9446 9446 }
9447 9447
9448 9448 if (dst == htonl(INADDR_LOOPBACK)) {
9449 9449 ip1dbg(("ip_input_options: loopback addr in "
9450 9450 "source route!\n"));
9451 9451 goto bad_src_route;
9452 9452 }
9453 9453 /*
9454 9454 * For strict: verify that dst is directly
9455 9455 * reachable.
9456 9456 */
9457 9457 if (optval == IPOPT_SSRR) {
9458 9458 ire = ire_ftable_lookup_v4(dst, 0, 0,
9459 9459 IRE_INTERFACE, NULL, ALL_ZONES,
9460 9460 ira->ira_tsl,
9461 9461 MATCH_IRE_TYPE | MATCH_IRE_SECATTR, 0, ipst,
9462 9462 NULL);
9463 9463 if (ire == NULL) {
9464 9464 ip1dbg(("ip_input_options: SSRR not "
9465 9465 "directly reachable: 0x%x\n",
9466 9466 ntohl(dst)));
9467 9467 goto bad_src_route;
9468 9468 }
9469 9469 ire_refrele(ire);
9470 9470 }
9471 9471 /*
9472 9472 * Defer update of the offset and the record route
9473 9473 * until the packet is forwarded.
9474 9474 */
9475 9475 break;
9476 9476 case IPOPT_RR:
9477 9477 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9478 9478 ip1dbg((
9479 9479 "ip_input_options: bad option offset\n"));
9480 9480 code = (char *)&opt[IPOPT_OLEN] -
9481 9481 (char *)ipha;
9482 9482 goto param_prob;
9483 9483 }
9484 9484 break;
9485 9485 case IPOPT_TS:
9486 9486 /*
9487 9487 * Verify that length >= 5 and that there is either
9488 9488 * room for another timestamp or that the overflow
9489 9489 * counter is not maxed out.
9490 9490 */
9491 9491 code = (char *)&opt[IPOPT_OLEN] - (char *)ipha;
9492 9492 if (optlen < IPOPT_MINLEN_IT) {
9493 9493 goto param_prob;
9494 9494 }
9495 9495 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
9496 9496 ip1dbg((
9497 9497 "ip_input_options: bad option offset\n"));
9498 9498 code = (char *)&opt[IPOPT_OFFSET] -
9499 9499 (char *)ipha;
9500 9500 goto param_prob;
9501 9501 }
9502 9502 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
9503 9503 case IPOPT_TS_TSONLY:
9504 9504 off = IPOPT_TS_TIMELEN;
9505 9505 break;
9506 9506 case IPOPT_TS_TSANDADDR:
9507 9507 case IPOPT_TS_PRESPEC:
9508 9508 case IPOPT_TS_PRESPEC_RFC791:
9509 9509 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
9510 9510 break;
9511 9511 default:
9512 9512 code = (char *)&opt[IPOPT_POS_OV_FLG] -
9513 9513 (char *)ipha;
9514 9514 goto param_prob;
9515 9515 }
9516 9516 if (opt[IPOPT_OFFSET] - 1 + off > optlen &&
9517 9517 (opt[IPOPT_POS_OV_FLG] & 0xF0) == 0xF0) {
9518 9518 /*
9519 9519 * No room and the overflow counter is 15
9520 9520 * already.
9521 9521 */
9522 9522 goto param_prob;
9523 9523 }
9524 9524 break;
9525 9525 }
9526 9526 }
9527 9527
9528 9528 if ((opts.ipoptp_flags & IPOPTP_ERROR) == 0) {
9529 9529 return (dst);
9530 9530 }
9531 9531
9532 9532 ip1dbg(("ip_input_options: error processing IP options."));
9533 9533 code = (char *)&opt[IPOPT_OFFSET] - (char *)ipha;
9534 9534
9535 9535 param_prob:
9536 9536 /* make sure we clear any indication of a hardware checksum */
9537 9537 DB_CKSUMFLAGS(mp) = 0;
9538 9538 ip_drop_input("ICMP_PARAM_PROBLEM", mp, ira->ira_ill);
9539 9539 icmp_param_problem(mp, (uint8_t)code, ira);
9540 9540 *errorp = -1;
9541 9541 return (dst);
9542 9542
9543 9543 bad_src_route:
9544 9544 /* make sure we clear any indication of a hardware checksum */
9545 9545 DB_CKSUMFLAGS(mp) = 0;
9546 9546 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ira->ira_ill);
9547 9547 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, ira);
9548 9548 *errorp = -1;
9549 9549 return (dst);
9550 9550 }
9551 9551
9552 9552 /*
9553 9553 * IP & ICMP info in >=14 msg's ...
9554 9554 * - ip fixed part (mib2_ip_t)
9555 9555 * - icmp fixed part (mib2_icmp_t)
9556 9556 * - ipAddrEntryTable (ip 20) all IPv4 ipifs
9557 9557 * - ipRouteEntryTable (ip 21) all IPv4 IREs
9558 9558 * - ipNetToMediaEntryTable (ip 22) all IPv4 Neighbor Cache entries
9559 9559 * - ipRouteAttributeTable (ip 102) labeled routes
9560 9560 * - ip multicast membership (ip_member_t)
9561 9561 * - ip multicast source filtering (ip_grpsrc_t)
9562 9562 * - igmp fixed part (struct igmpstat)
9563 9563 * - multicast routing stats (struct mrtstat)
9564 9564 * - multicast routing vifs (array of struct vifctl)
9565 9565 * - multicast routing routes (array of struct mfcctl)
9566 9566 * - ip6 fixed part (mib2_ipv6IfStatsEntry_t)
9567 9567 * One per ill plus one generic
9568 9568 * - icmp6 fixed part (mib2_ipv6IfIcmpEntry_t)
9569 9569 * One per ill plus one generic
9570 9570 * - ipv6RouteEntry all IPv6 IREs
9571 9571 * - ipv6RouteAttributeTable (ip6 102) labeled routes
9572 9572 * - ipv6NetToMediaEntry all IPv6 Neighbor Cache entries
9573 9573 * - ipv6AddrEntry all IPv6 ipifs
9574 9574 * - ipv6 multicast membership (ipv6_member_t)
9575 9575 * - ipv6 multicast source filtering (ipv6_grpsrc_t)
9576 9576 *
9577 9577 * NOTE: original mpctl is copied for msg's 2..N, since its ctl part is
9578 9578 * already filled in by the caller.
9579 9579 * If legacy_req is true then MIB structures needs to be truncated to their
9580 9580 * legacy sizes before being returned.
9581 9581 * Return value of 0 indicates that no messages were sent and caller
9582 9582 * should free mpctl.
9583 9583 */
9584 9584 int
9585 9585 ip_snmp_get(queue_t *q, mblk_t *mpctl, int level, boolean_t legacy_req)
9586 9586 {
9587 9587 ip_stack_t *ipst;
9588 9588 sctp_stack_t *sctps;
9589 9589
9590 9590 if (q->q_next != NULL) {
9591 9591 ipst = ILLQ_TO_IPST(q);
9592 9592 } else {
9593 9593 ipst = CONNQ_TO_IPST(q);
9594 9594 }
9595 9595 ASSERT(ipst != NULL);
9596 9596 sctps = ipst->ips_netstack->netstack_sctp;
9597 9597
9598 9598 if (mpctl == NULL || mpctl->b_cont == NULL) {
9599 9599 return (0);
9600 9600 }
9601 9601
9602 9602 /*
9603 9603 * For the purposes of the (broken) packet shell use
9604 9604 * of the level we make sure MIB2_TCP/MIB2_UDP can be used
9605 9605 * to make TCP and UDP appear first in the list of mib items.
9606 9606 * TBD: We could expand this and use it in netstat so that
9607 9607 * the kernel doesn't have to produce large tables (connections,
9608 9608 * routes, etc) when netstat only wants the statistics or a particular
9609 9609 * table.
9610 9610 */
9611 9611 if (!(level == MIB2_TCP || level == MIB2_UDP)) {
9612 9612 if ((mpctl = icmp_snmp_get(q, mpctl)) == NULL) {
9613 9613 return (1);
9614 9614 }
9615 9615 }
9616 9616
9617 9617 if (level != MIB2_TCP) {
9618 9618 if ((mpctl = udp_snmp_get(q, mpctl, legacy_req)) == NULL) {
9619 9619 return (1);
9620 9620 }
9621 9621 }
9622 9622
9623 9623 if (level != MIB2_UDP) {
9624 9624 if ((mpctl = tcp_snmp_get(q, mpctl, legacy_req)) == NULL) {
9625 9625 return (1);
9626 9626 }
9627 9627 }
9628 9628
9629 9629 if ((mpctl = ip_snmp_get_mib2_ip_traffic_stats(q, mpctl,
9630 9630 ipst, legacy_req)) == NULL) {
9631 9631 return (1);
9632 9632 }
9633 9633
9634 9634 if ((mpctl = ip_snmp_get_mib2_ip6(q, mpctl, ipst,
9635 9635 legacy_req)) == NULL) {
9636 9636 return (1);
9637 9637 }
9638 9638
9639 9639 if ((mpctl = ip_snmp_get_mib2_icmp(q, mpctl, ipst)) == NULL) {
9640 9640 return (1);
9641 9641 }
9642 9642
9643 9643 if ((mpctl = ip_snmp_get_mib2_icmp6(q, mpctl, ipst)) == NULL) {
9644 9644 return (1);
9645 9645 }
9646 9646
9647 9647 if ((mpctl = ip_snmp_get_mib2_igmp(q, mpctl, ipst)) == NULL) {
9648 9648 return (1);
9649 9649 }
9650 9650
9651 9651 if ((mpctl = ip_snmp_get_mib2_multi(q, mpctl, ipst)) == NULL) {
9652 9652 return (1);
9653 9653 }
9654 9654
9655 9655 if ((mpctl = ip_snmp_get_mib2_ip_addr(q, mpctl, ipst,
9656 9656 legacy_req)) == NULL) {
9657 9657 return (1);
9658 9658 }
9659 9659
9660 9660 if ((mpctl = ip_snmp_get_mib2_ip6_addr(q, mpctl, ipst,
9661 9661 legacy_req)) == NULL) {
9662 9662 return (1);
9663 9663 }
9664 9664
9665 9665 if ((mpctl = ip_snmp_get_mib2_ip_group_mem(q, mpctl, ipst)) == NULL) {
9666 9666 return (1);
9667 9667 }
9668 9668
9669 9669 if ((mpctl = ip_snmp_get_mib2_ip6_group_mem(q, mpctl, ipst)) == NULL) {
9670 9670 return (1);
9671 9671 }
9672 9672
9673 9673 if ((mpctl = ip_snmp_get_mib2_ip_group_src(q, mpctl, ipst)) == NULL) {
9674 9674 return (1);
9675 9675 }
9676 9676
9677 9677 if ((mpctl = ip_snmp_get_mib2_ip6_group_src(q, mpctl, ipst)) == NULL) {
9678 9678 return (1);
9679 9679 }
9680 9680
9681 9681 if ((mpctl = ip_snmp_get_mib2_virt_multi(q, mpctl, ipst)) == NULL) {
9682 9682 return (1);
9683 9683 }
9684 9684
9685 9685 if ((mpctl = ip_snmp_get_mib2_multi_rtable(q, mpctl, ipst)) == NULL) {
9686 9686 return (1);
9687 9687 }
9688 9688
9689 9689 mpctl = ip_snmp_get_mib2_ip_route_media(q, mpctl, level, ipst);
9690 9690 if (mpctl == NULL)
9691 9691 return (1);
9692 9692
9693 9693 mpctl = ip_snmp_get_mib2_ip6_route_media(q, mpctl, level, ipst);
9694 9694 if (mpctl == NULL)
9695 9695 return (1);
9696 9696
9697 9697 if ((mpctl = sctp_snmp_get_mib2(q, mpctl, sctps)) == NULL) {
9698 9698 return (1);
9699 9699 }
9700 9700 if ((mpctl = ip_snmp_get_mib2_ip_dce(q, mpctl, ipst)) == NULL) {
9701 9701 return (1);
9702 9702 }
9703 9703 freemsg(mpctl);
9704 9704 return (1);
9705 9705 }
9706 9706
9707 9707 /* Get global (legacy) IPv4 statistics */
9708 9708 static mblk_t *
9709 9709 ip_snmp_get_mib2_ip(queue_t *q, mblk_t *mpctl, mib2_ipIfStatsEntry_t *ipmib,
9710 9710 ip_stack_t *ipst, boolean_t legacy_req)
9711 9711 {
9712 9712 mib2_ip_t old_ip_mib;
9713 9713 struct opthdr *optp;
9714 9714 mblk_t *mp2ctl;
9715 9715 mib2_ipAddrEntry_t mae;
9716 9716
9717 9717 /*
9718 9718 * make a copy of the original message
9719 9719 */
9720 9720 mp2ctl = copymsg(mpctl);
9721 9721
9722 9722 /* fixed length IP structure... */
9723 9723 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9724 9724 optp->level = MIB2_IP;
9725 9725 optp->name = 0;
9726 9726 SET_MIB(old_ip_mib.ipForwarding,
9727 9727 (WE_ARE_FORWARDING(ipst) ? 1 : 2));
9728 9728 SET_MIB(old_ip_mib.ipDefaultTTL,
9729 9729 (uint32_t)ipst->ips_ip_def_ttl);
9730 9730 SET_MIB(old_ip_mib.ipReasmTimeout,
9731 9731 ipst->ips_ip_reassembly_timeout);
9732 9732 SET_MIB(old_ip_mib.ipAddrEntrySize,
9733 9733 (legacy_req) ? LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t) :
9734 9734 sizeof (mib2_ipAddrEntry_t));
9735 9735 SET_MIB(old_ip_mib.ipRouteEntrySize,
9736 9736 sizeof (mib2_ipRouteEntry_t));
9737 9737 SET_MIB(old_ip_mib.ipNetToMediaEntrySize,
9738 9738 sizeof (mib2_ipNetToMediaEntry_t));
9739 9739 SET_MIB(old_ip_mib.ipMemberEntrySize, sizeof (ip_member_t));
9740 9740 SET_MIB(old_ip_mib.ipGroupSourceEntrySize, sizeof (ip_grpsrc_t));
9741 9741 SET_MIB(old_ip_mib.ipRouteAttributeSize,
9742 9742 sizeof (mib2_ipAttributeEntry_t));
9743 9743 SET_MIB(old_ip_mib.transportMLPSize, sizeof (mib2_transportMLPEntry_t));
9744 9744 SET_MIB(old_ip_mib.ipDestEntrySize, sizeof (dest_cache_entry_t));
9745 9745
9746 9746 /*
9747 9747 * Grab the statistics from the new IP MIB
9748 9748 */
9749 9749 SET_MIB(old_ip_mib.ipInReceives,
9750 9750 (uint32_t)ipmib->ipIfStatsHCInReceives);
9751 9751 SET_MIB(old_ip_mib.ipInHdrErrors, ipmib->ipIfStatsInHdrErrors);
9752 9752 SET_MIB(old_ip_mib.ipInAddrErrors, ipmib->ipIfStatsInAddrErrors);
9753 9753 SET_MIB(old_ip_mib.ipForwDatagrams,
9754 9754 (uint32_t)ipmib->ipIfStatsHCOutForwDatagrams);
9755 9755 SET_MIB(old_ip_mib.ipInUnknownProtos,
9756 9756 ipmib->ipIfStatsInUnknownProtos);
9757 9757 SET_MIB(old_ip_mib.ipInDiscards, ipmib->ipIfStatsInDiscards);
9758 9758 SET_MIB(old_ip_mib.ipInDelivers,
9759 9759 (uint32_t)ipmib->ipIfStatsHCInDelivers);
9760 9760 SET_MIB(old_ip_mib.ipOutRequests,
9761 9761 (uint32_t)ipmib->ipIfStatsHCOutRequests);
9762 9762 SET_MIB(old_ip_mib.ipOutDiscards, ipmib->ipIfStatsOutDiscards);
9763 9763 SET_MIB(old_ip_mib.ipOutNoRoutes, ipmib->ipIfStatsOutNoRoutes);
9764 9764 SET_MIB(old_ip_mib.ipReasmReqds, ipmib->ipIfStatsReasmReqds);
9765 9765 SET_MIB(old_ip_mib.ipReasmOKs, ipmib->ipIfStatsReasmOKs);
9766 9766 SET_MIB(old_ip_mib.ipReasmFails, ipmib->ipIfStatsReasmFails);
9767 9767 SET_MIB(old_ip_mib.ipFragOKs, ipmib->ipIfStatsOutFragOKs);
9768 9768 SET_MIB(old_ip_mib.ipFragFails, ipmib->ipIfStatsOutFragFails);
9769 9769 SET_MIB(old_ip_mib.ipFragCreates, ipmib->ipIfStatsOutFragCreates);
9770 9770
9771 9771 /* ipRoutingDiscards is not being used */
9772 9772 SET_MIB(old_ip_mib.ipRoutingDiscards, 0);
9773 9773 SET_MIB(old_ip_mib.tcpInErrs, ipmib->tcpIfStatsInErrs);
9774 9774 SET_MIB(old_ip_mib.udpNoPorts, ipmib->udpIfStatsNoPorts);
9775 9775 SET_MIB(old_ip_mib.ipInCksumErrs, ipmib->ipIfStatsInCksumErrs);
9776 9776 SET_MIB(old_ip_mib.ipReasmDuplicates,
9777 9777 ipmib->ipIfStatsReasmDuplicates);
9778 9778 SET_MIB(old_ip_mib.ipReasmPartDups, ipmib->ipIfStatsReasmPartDups);
9779 9779 SET_MIB(old_ip_mib.ipForwProhibits, ipmib->ipIfStatsForwProhibits);
9780 9780 SET_MIB(old_ip_mib.udpInCksumErrs, ipmib->udpIfStatsInCksumErrs);
9781 9781 SET_MIB(old_ip_mib.udpInOverflows, ipmib->udpIfStatsInOverflows);
9782 9782 SET_MIB(old_ip_mib.rawipInOverflows,
9783 9783 ipmib->rawipIfStatsInOverflows);
9784 9784
9785 9785 SET_MIB(old_ip_mib.ipsecInSucceeded, ipmib->ipsecIfStatsInSucceeded);
9786 9786 SET_MIB(old_ip_mib.ipsecInFailed, ipmib->ipsecIfStatsInFailed);
9787 9787 SET_MIB(old_ip_mib.ipInIPv6, ipmib->ipIfStatsInWrongIPVersion);
9788 9788 SET_MIB(old_ip_mib.ipOutIPv6, ipmib->ipIfStatsOutWrongIPVersion);
9789 9789 SET_MIB(old_ip_mib.ipOutSwitchIPv6,
9790 9790 ipmib->ipIfStatsOutSwitchIPVersion);
9791 9791
9792 9792 if (!snmp_append_data(mpctl->b_cont, (char *)&old_ip_mib,
9793 9793 (int)sizeof (old_ip_mib))) {
9794 9794 ip1dbg(("ip_snmp_get_mib2_ip: failed to allocate %u bytes\n",
9795 9795 (uint_t)sizeof (old_ip_mib)));
9796 9796 }
9797 9797
9798 9798 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9799 9799 ip3dbg(("ip_snmp_get_mib2_ip: level %d, name %d, len %d\n",
9800 9800 (int)optp->level, (int)optp->name, (int)optp->len));
9801 9801 qreply(q, mpctl);
9802 9802 return (mp2ctl);
9803 9803 }
9804 9804
9805 9805 /* Per interface IPv4 statistics */
9806 9806 static mblk_t *
9807 9807 ip_snmp_get_mib2_ip_traffic_stats(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
9808 9808 boolean_t legacy_req)
9809 9809 {
9810 9810 struct opthdr *optp;
9811 9811 mblk_t *mp2ctl;
9812 9812 ill_t *ill;
9813 9813 ill_walk_context_t ctx;
9814 9814 mblk_t *mp_tail = NULL;
9815 9815 mib2_ipIfStatsEntry_t global_ip_mib;
9816 9816 mib2_ipAddrEntry_t mae;
9817 9817
9818 9818 /*
9819 9819 * Make a copy of the original message
9820 9820 */
9821 9821 mp2ctl = copymsg(mpctl);
9822 9822
9823 9823 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9824 9824 optp->level = MIB2_IP;
9825 9825 optp->name = MIB2_IP_TRAFFIC_STATS;
9826 9826 /* Include "unknown interface" ip_mib */
9827 9827 ipst->ips_ip_mib.ipIfStatsIPVersion = MIB2_INETADDRESSTYPE_ipv4;
9828 9828 ipst->ips_ip_mib.ipIfStatsIfIndex =
9829 9829 MIB2_UNKNOWN_INTERFACE; /* Flag to netstat */
9830 9830 SET_MIB(ipst->ips_ip_mib.ipIfStatsForwarding,
9831 9831 (ipst->ips_ip_forwarding ? 1 : 2));
9832 9832 SET_MIB(ipst->ips_ip_mib.ipIfStatsDefaultTTL,
9833 9833 (uint32_t)ipst->ips_ip_def_ttl);
9834 9834 SET_MIB(ipst->ips_ip_mib.ipIfStatsEntrySize,
9835 9835 sizeof (mib2_ipIfStatsEntry_t));
9836 9836 SET_MIB(ipst->ips_ip_mib.ipIfStatsAddrEntrySize,
9837 9837 sizeof (mib2_ipAddrEntry_t));
9838 9838 SET_MIB(ipst->ips_ip_mib.ipIfStatsRouteEntrySize,
9839 9839 sizeof (mib2_ipRouteEntry_t));
9840 9840 SET_MIB(ipst->ips_ip_mib.ipIfStatsNetToMediaEntrySize,
9841 9841 sizeof (mib2_ipNetToMediaEntry_t));
9842 9842 SET_MIB(ipst->ips_ip_mib.ipIfStatsMemberEntrySize,
9843 9843 sizeof (ip_member_t));
9844 9844 SET_MIB(ipst->ips_ip_mib.ipIfStatsGroupSourceEntrySize,
9845 9845 sizeof (ip_grpsrc_t));
9846 9846
9847 9847 bcopy(&ipst->ips_ip_mib, &global_ip_mib, sizeof (global_ip_mib));
9848 9848
9849 9849 if (legacy_req) {
9850 9850 SET_MIB(global_ip_mib.ipIfStatsAddrEntrySize,
9851 9851 LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t));
9852 9852 }
9853 9853
9854 9854 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
9855 9855 (char *)&global_ip_mib, (int)sizeof (global_ip_mib))) {
9856 9856 ip1dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9857 9857 "failed to allocate %u bytes\n",
9858 9858 (uint_t)sizeof (global_ip_mib)));
9859 9859 }
9860 9860
9861 9861 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
9862 9862 ill = ILL_START_WALK_V4(&ctx, ipst);
9863 9863 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
9864 9864 ill->ill_ip_mib->ipIfStatsIfIndex =
9865 9865 ill->ill_phyint->phyint_ifindex;
9866 9866 SET_MIB(ill->ill_ip_mib->ipIfStatsForwarding,
9867 9867 (ipst->ips_ip_forwarding ? 1 : 2));
9868 9868 SET_MIB(ill->ill_ip_mib->ipIfStatsDefaultTTL,
9869 9869 (uint32_t)ipst->ips_ip_def_ttl);
9870 9870
9871 9871 ip_mib2_add_ip_stats(&global_ip_mib, ill->ill_ip_mib);
9872 9872 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
9873 9873 (char *)ill->ill_ip_mib,
9874 9874 (int)sizeof (*ill->ill_ip_mib))) {
9875 9875 ip1dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9876 9876 "failed to allocate %u bytes\n",
9877 9877 (uint_t)sizeof (*ill->ill_ip_mib)));
9878 9878 }
9879 9879 }
9880 9880 rw_exit(&ipst->ips_ill_g_lock);
9881 9881
9882 9882 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9883 9883 ip3dbg(("ip_snmp_get_mib2_ip_traffic_stats: "
9884 9884 "level %d, name %d, len %d\n",
9885 9885 (int)optp->level, (int)optp->name, (int)optp->len));
9886 9886 qreply(q, mpctl);
9887 9887
9888 9888 if (mp2ctl == NULL)
9889 9889 return (NULL);
9890 9890
9891 9891 return (ip_snmp_get_mib2_ip(q, mp2ctl, &global_ip_mib, ipst,
9892 9892 legacy_req));
9893 9893 }
9894 9894
9895 9895 /* Global IPv4 ICMP statistics */
9896 9896 static mblk_t *
9897 9897 ip_snmp_get_mib2_icmp(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9898 9898 {
9899 9899 struct opthdr *optp;
9900 9900 mblk_t *mp2ctl;
9901 9901
9902 9902 /*
9903 9903 * Make a copy of the original message
9904 9904 */
9905 9905 mp2ctl = copymsg(mpctl);
9906 9906
9907 9907 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9908 9908 optp->level = MIB2_ICMP;
9909 9909 optp->name = 0;
9910 9910 if (!snmp_append_data(mpctl->b_cont, (char *)&ipst->ips_icmp_mib,
9911 9911 (int)sizeof (ipst->ips_icmp_mib))) {
9912 9912 ip1dbg(("ip_snmp_get_mib2_icmp: failed to allocate %u bytes\n",
9913 9913 (uint_t)sizeof (ipst->ips_icmp_mib)));
9914 9914 }
9915 9915 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9916 9916 ip3dbg(("ip_snmp_get_mib2_icmp: level %d, name %d, len %d\n",
9917 9917 (int)optp->level, (int)optp->name, (int)optp->len));
9918 9918 qreply(q, mpctl);
9919 9919 return (mp2ctl);
9920 9920 }
9921 9921
9922 9922 /* Global IPv4 IGMP statistics */
9923 9923 static mblk_t *
9924 9924 ip_snmp_get_mib2_igmp(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9925 9925 {
9926 9926 struct opthdr *optp;
9927 9927 mblk_t *mp2ctl;
9928 9928
9929 9929 /*
9930 9930 * make a copy of the original message
9931 9931 */
9932 9932 mp2ctl = copymsg(mpctl);
9933 9933
9934 9934 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9935 9935 optp->level = EXPER_IGMP;
9936 9936 optp->name = 0;
9937 9937 if (!snmp_append_data(mpctl->b_cont, (char *)&ipst->ips_igmpstat,
9938 9938 (int)sizeof (ipst->ips_igmpstat))) {
9939 9939 ip1dbg(("ip_snmp_get_mib2_igmp: failed to allocate %u bytes\n",
9940 9940 (uint_t)sizeof (ipst->ips_igmpstat)));
9941 9941 }
9942 9942 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9943 9943 ip3dbg(("ip_snmp_get_mib2_igmp: level %d, name %d, len %d\n",
9944 9944 (int)optp->level, (int)optp->name, (int)optp->len));
9945 9945 qreply(q, mpctl);
9946 9946 return (mp2ctl);
9947 9947 }
9948 9948
9949 9949 /* Global IPv4 Multicast Routing statistics */
9950 9950 static mblk_t *
9951 9951 ip_snmp_get_mib2_multi(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
9952 9952 {
9953 9953 struct opthdr *optp;
9954 9954 mblk_t *mp2ctl;
9955 9955
9956 9956 /*
9957 9957 * make a copy of the original message
9958 9958 */
9959 9959 mp2ctl = copymsg(mpctl);
9960 9960
9961 9961 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
9962 9962 optp->level = EXPER_DVMRP;
9963 9963 optp->name = 0;
9964 9964 if (!ip_mroute_stats(mpctl->b_cont, ipst)) {
9965 9965 ip0dbg(("ip_mroute_stats: failed\n"));
9966 9966 }
9967 9967 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
9968 9968 ip3dbg(("ip_snmp_get_mib2_multi: level %d, name %d, len %d\n",
9969 9969 (int)optp->level, (int)optp->name, (int)optp->len));
9970 9970 qreply(q, mpctl);
9971 9971 return (mp2ctl);
9972 9972 }
9973 9973
9974 9974 /* IPv4 address information */
9975 9975 static mblk_t *
9976 9976 ip_snmp_get_mib2_ip_addr(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
9977 9977 boolean_t legacy_req)
9978 9978 {
9979 9979 struct opthdr *optp;
9980 9980 mblk_t *mp2ctl;
9981 9981 mblk_t *mp_tail = NULL;
9982 9982 ill_t *ill;
9983 9983 ipif_t *ipif;
9984 9984 uint_t bitval;
9985 9985 mib2_ipAddrEntry_t mae;
9986 9986 size_t mae_size;
9987 9987 zoneid_t zoneid;
9988 9988 ill_walk_context_t ctx;
9989 9989
9990 9990 /*
9991 9991 * make a copy of the original message
9992 9992 */
9993 9993 mp2ctl = copymsg(mpctl);
9994 9994
9995 9995 mae_size = (legacy_req) ? LEGACY_MIB_SIZE(&mae, mib2_ipAddrEntry_t) :
9996 9996 sizeof (mib2_ipAddrEntry_t);
9997 9997
9998 9998 /* ipAddrEntryTable */
9999 9999
10000 10000 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10001 10001 optp->level = MIB2_IP;
10002 10002 optp->name = MIB2_IP_ADDR;
10003 10003 zoneid = Q_TO_CONN(q)->conn_zoneid;
10004 10004
10005 10005 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10006 10006 ill = ILL_START_WALK_V4(&ctx, ipst);
10007 10007 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10008 10008 for (ipif = ill->ill_ipif; ipif != NULL;
10009 10009 ipif = ipif->ipif_next) {
10010 10010 if (ipif->ipif_zoneid != zoneid &&
10011 10011 ipif->ipif_zoneid != ALL_ZONES)
10012 10012 continue;
10013 10013 /* Sum of count from dead IRE_LO* and our current */
10014 10014 mae.ipAdEntInfo.ae_ibcnt = ipif->ipif_ib_pkt_count;
10015 10015 if (ipif->ipif_ire_local != NULL) {
10016 10016 mae.ipAdEntInfo.ae_ibcnt +=
10017 10017 ipif->ipif_ire_local->ire_ib_pkt_count;
10018 10018 }
10019 10019 mae.ipAdEntInfo.ae_obcnt = 0;
10020 10020 mae.ipAdEntInfo.ae_focnt = 0;
10021 10021
10022 10022 ipif_get_name(ipif, mae.ipAdEntIfIndex.o_bytes,
10023 10023 OCTET_LENGTH);
10024 10024 mae.ipAdEntIfIndex.o_length =
10025 10025 mi_strlen(mae.ipAdEntIfIndex.o_bytes);
10026 10026 mae.ipAdEntAddr = ipif->ipif_lcl_addr;
10027 10027 mae.ipAdEntNetMask = ipif->ipif_net_mask;
10028 10028 mae.ipAdEntInfo.ae_subnet = ipif->ipif_subnet;
10029 10029 mae.ipAdEntInfo.ae_subnet_len =
10030 10030 ip_mask_to_plen(ipif->ipif_net_mask);
10031 10031 mae.ipAdEntInfo.ae_src_addr = ipif->ipif_lcl_addr;
10032 10032 for (bitval = 1;
10033 10033 bitval &&
10034 10034 !(bitval & ipif->ipif_brd_addr);
10035 10035 bitval <<= 1)
10036 10036 noop;
10037 10037 mae.ipAdEntBcastAddr = bitval;
10038 10038 mae.ipAdEntReasmMaxSize = IP_MAXPACKET;
10039 10039 mae.ipAdEntInfo.ae_mtu = ipif->ipif_ill->ill_mtu;
10040 10040 mae.ipAdEntInfo.ae_metric = ipif->ipif_ill->ill_metric;
10041 10041 mae.ipAdEntInfo.ae_broadcast_addr =
10042 10042 ipif->ipif_brd_addr;
10043 10043 mae.ipAdEntInfo.ae_pp_dst_addr =
10044 10044 ipif->ipif_pp_dst_addr;
10045 10045 mae.ipAdEntInfo.ae_flags = ipif->ipif_flags |
10046 10046 ill->ill_flags | ill->ill_phyint->phyint_flags;
10047 10047 mae.ipAdEntRetransmitTime =
10048 10048 ill->ill_reachable_retrans_time;
10049 10049
10050 10050 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10051 10051 (char *)&mae, (int)mae_size)) {
10052 10052 ip1dbg(("ip_snmp_get_mib2_ip_addr: failed to "
10053 10053 "allocate %u bytes\n", (uint_t)mae_size));
10054 10054 }
10055 10055 }
10056 10056 }
10057 10057 rw_exit(&ipst->ips_ill_g_lock);
10058 10058
10059 10059 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10060 10060 ip3dbg(("ip_snmp_get_mib2_ip_addr: level %d, name %d, len %d\n",
10061 10061 (int)optp->level, (int)optp->name, (int)optp->len));
10062 10062 qreply(q, mpctl);
10063 10063 return (mp2ctl);
10064 10064 }
10065 10065
10066 10066 /* IPv6 address information */
10067 10067 static mblk_t *
10068 10068 ip_snmp_get_mib2_ip6_addr(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
10069 10069 boolean_t legacy_req)
10070 10070 {
10071 10071 struct opthdr *optp;
10072 10072 mblk_t *mp2ctl;
10073 10073 mblk_t *mp_tail = NULL;
10074 10074 ill_t *ill;
10075 10075 ipif_t *ipif;
10076 10076 mib2_ipv6AddrEntry_t mae6;
10077 10077 size_t mae6_size;
10078 10078 zoneid_t zoneid;
10079 10079 ill_walk_context_t ctx;
10080 10080
10081 10081 /*
10082 10082 * make a copy of the original message
10083 10083 */
10084 10084 mp2ctl = copymsg(mpctl);
10085 10085
10086 10086 mae6_size = (legacy_req) ?
10087 10087 LEGACY_MIB_SIZE(&mae6, mib2_ipv6AddrEntry_t) :
10088 10088 sizeof (mib2_ipv6AddrEntry_t);
10089 10089
10090 10090 /* ipv6AddrEntryTable */
10091 10091
10092 10092 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10093 10093 optp->level = MIB2_IP6;
10094 10094 optp->name = MIB2_IP6_ADDR;
10095 10095 zoneid = Q_TO_CONN(q)->conn_zoneid;
10096 10096
10097 10097 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10098 10098 ill = ILL_START_WALK_V6(&ctx, ipst);
10099 10099 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10100 10100 for (ipif = ill->ill_ipif; ipif != NULL;
10101 10101 ipif = ipif->ipif_next) {
10102 10102 if (ipif->ipif_zoneid != zoneid &&
10103 10103 ipif->ipif_zoneid != ALL_ZONES)
10104 10104 continue;
10105 10105 /* Sum of count from dead IRE_LO* and our current */
10106 10106 mae6.ipv6AddrInfo.ae_ibcnt = ipif->ipif_ib_pkt_count;
10107 10107 if (ipif->ipif_ire_local != NULL) {
10108 10108 mae6.ipv6AddrInfo.ae_ibcnt +=
10109 10109 ipif->ipif_ire_local->ire_ib_pkt_count;
10110 10110 }
10111 10111 mae6.ipv6AddrInfo.ae_obcnt = 0;
10112 10112 mae6.ipv6AddrInfo.ae_focnt = 0;
10113 10113
10114 10114 ipif_get_name(ipif, mae6.ipv6AddrIfIndex.o_bytes,
10115 10115 OCTET_LENGTH);
10116 10116 mae6.ipv6AddrIfIndex.o_length =
10117 10117 mi_strlen(mae6.ipv6AddrIfIndex.o_bytes);
10118 10118 mae6.ipv6AddrAddress = ipif->ipif_v6lcl_addr;
10119 10119 mae6.ipv6AddrPfxLength =
10120 10120 ip_mask_to_plen_v6(&ipif->ipif_v6net_mask);
10121 10121 mae6.ipv6AddrInfo.ae_subnet = ipif->ipif_v6subnet;
10122 10122 mae6.ipv6AddrInfo.ae_subnet_len =
10123 10123 mae6.ipv6AddrPfxLength;
10124 10124 mae6.ipv6AddrInfo.ae_src_addr = ipif->ipif_v6lcl_addr;
10125 10125
10126 10126 /* Type: stateless(1), stateful(2), unknown(3) */
10127 10127 if (ipif->ipif_flags & IPIF_ADDRCONF)
10128 10128 mae6.ipv6AddrType = 1;
10129 10129 else
10130 10130 mae6.ipv6AddrType = 2;
10131 10131 /* Anycast: true(1), false(2) */
10132 10132 if (ipif->ipif_flags & IPIF_ANYCAST)
10133 10133 mae6.ipv6AddrAnycastFlag = 1;
10134 10134 else
10135 10135 mae6.ipv6AddrAnycastFlag = 2;
10136 10136
10137 10137 /*
10138 10138 * Address status: preferred(1), deprecated(2),
10139 10139 * invalid(3), inaccessible(4), unknown(5)
10140 10140 */
10141 10141 if (ipif->ipif_flags & IPIF_NOLOCAL)
10142 10142 mae6.ipv6AddrStatus = 3;
10143 10143 else if (ipif->ipif_flags & IPIF_DEPRECATED)
10144 10144 mae6.ipv6AddrStatus = 2;
10145 10145 else
10146 10146 mae6.ipv6AddrStatus = 1;
10147 10147 mae6.ipv6AddrInfo.ae_mtu = ipif->ipif_ill->ill_mtu;
10148 10148 mae6.ipv6AddrInfo.ae_metric =
10149 10149 ipif->ipif_ill->ill_metric;
10150 10150 mae6.ipv6AddrInfo.ae_pp_dst_addr =
10151 10151 ipif->ipif_v6pp_dst_addr;
10152 10152 mae6.ipv6AddrInfo.ae_flags = ipif->ipif_flags |
10153 10153 ill->ill_flags | ill->ill_phyint->phyint_flags;
10154 10154 mae6.ipv6AddrReasmMaxSize = IP_MAXPACKET;
10155 10155 mae6.ipv6AddrIdentifier = ill->ill_token;
10156 10156 mae6.ipv6AddrIdentifierLen = ill->ill_token_length;
10157 10157 mae6.ipv6AddrReachableTime = ill->ill_reachable_time;
10158 10158 mae6.ipv6AddrRetransmitTime =
10159 10159 ill->ill_reachable_retrans_time;
10160 10160 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10161 10161 (char *)&mae6, (int)mae6_size)) {
10162 10162 ip1dbg(("ip_snmp_get_mib2_ip6_addr: failed to "
10163 10163 "allocate %u bytes\n",
10164 10164 (uint_t)mae6_size));
10165 10165 }
10166 10166 }
10167 10167 }
10168 10168 rw_exit(&ipst->ips_ill_g_lock);
10169 10169
10170 10170 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10171 10171 ip3dbg(("ip_snmp_get_mib2_ip6_addr: level %d, name %d, len %d\n",
10172 10172 (int)optp->level, (int)optp->name, (int)optp->len));
10173 10173 qreply(q, mpctl);
10174 10174 return (mp2ctl);
10175 10175 }
10176 10176
10177 10177 /* IPv4 multicast group membership. */
10178 10178 static mblk_t *
10179 10179 ip_snmp_get_mib2_ip_group_mem(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10180 10180 {
10181 10181 struct opthdr *optp;
10182 10182 mblk_t *mp2ctl;
10183 10183 ill_t *ill;
10184 10184 ipif_t *ipif;
10185 10185 ilm_t *ilm;
10186 10186 ip_member_t ipm;
10187 10187 mblk_t *mp_tail = NULL;
10188 10188 ill_walk_context_t ctx;
10189 10189 zoneid_t zoneid;
10190 10190
10191 10191 /*
10192 10192 * make a copy of the original message
10193 10193 */
10194 10194 mp2ctl = copymsg(mpctl);
10195 10195 zoneid = Q_TO_CONN(q)->conn_zoneid;
10196 10196
10197 10197 /* ipGroupMember table */
10198 10198 optp = (struct opthdr *)&mpctl->b_rptr[
10199 10199 sizeof (struct T_optmgmt_ack)];
10200 10200 optp->level = MIB2_IP;
10201 10201 optp->name = EXPER_IP_GROUP_MEMBERSHIP;
10202 10202
10203 10203 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10204 10204 ill = ILL_START_WALK_V4(&ctx, ipst);
10205 10205 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10206 10206 /* Make sure the ill isn't going away. */
10207 10207 if (!ill_check_and_refhold(ill))
10208 10208 continue;
10209 10209 rw_exit(&ipst->ips_ill_g_lock);
10210 10210 rw_enter(&ill->ill_mcast_lock, RW_READER);
10211 10211 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10212 10212 if (ilm->ilm_zoneid != zoneid &&
10213 10213 ilm->ilm_zoneid != ALL_ZONES)
10214 10214 continue;
10215 10215
10216 10216 /* Is there an ipif for ilm_ifaddr? */
10217 10217 for (ipif = ill->ill_ipif; ipif != NULL;
10218 10218 ipif = ipif->ipif_next) {
10219 10219 if (!IPIF_IS_CONDEMNED(ipif) &&
10220 10220 ipif->ipif_lcl_addr == ilm->ilm_ifaddr &&
10221 10221 ilm->ilm_ifaddr != INADDR_ANY)
10222 10222 break;
10223 10223 }
10224 10224 if (ipif != NULL) {
10225 10225 ipif_get_name(ipif,
10226 10226 ipm.ipGroupMemberIfIndex.o_bytes,
10227 10227 OCTET_LENGTH);
10228 10228 } else {
10229 10229 ill_get_name(ill,
10230 10230 ipm.ipGroupMemberIfIndex.o_bytes,
10231 10231 OCTET_LENGTH);
10232 10232 }
10233 10233 ipm.ipGroupMemberIfIndex.o_length =
10234 10234 mi_strlen(ipm.ipGroupMemberIfIndex.o_bytes);
10235 10235
10236 10236 ipm.ipGroupMemberAddress = ilm->ilm_addr;
10237 10237 ipm.ipGroupMemberRefCnt = ilm->ilm_refcnt;
10238 10238 ipm.ipGroupMemberFilterMode = ilm->ilm_fmode;
10239 10239 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10240 10240 (char *)&ipm, (int)sizeof (ipm))) {
10241 10241 ip1dbg(("ip_snmp_get_mib2_ip_group: "
10242 10242 "failed to allocate %u bytes\n",
10243 10243 (uint_t)sizeof (ipm)));
10244 10244 }
10245 10245 }
10246 10246 rw_exit(&ill->ill_mcast_lock);
10247 10247 ill_refrele(ill);
10248 10248 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10249 10249 }
10250 10250 rw_exit(&ipst->ips_ill_g_lock);
10251 10251 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10252 10252 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10253 10253 (int)optp->level, (int)optp->name, (int)optp->len));
10254 10254 qreply(q, mpctl);
10255 10255 return (mp2ctl);
10256 10256 }
10257 10257
10258 10258 /* IPv6 multicast group membership. */
10259 10259 static mblk_t *
10260 10260 ip_snmp_get_mib2_ip6_group_mem(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10261 10261 {
10262 10262 struct opthdr *optp;
10263 10263 mblk_t *mp2ctl;
10264 10264 ill_t *ill;
10265 10265 ilm_t *ilm;
10266 10266 ipv6_member_t ipm6;
10267 10267 mblk_t *mp_tail = NULL;
10268 10268 ill_walk_context_t ctx;
10269 10269 zoneid_t zoneid;
10270 10270
10271 10271 /*
10272 10272 * make a copy of the original message
10273 10273 */
10274 10274 mp2ctl = copymsg(mpctl);
10275 10275 zoneid = Q_TO_CONN(q)->conn_zoneid;
10276 10276
10277 10277 /* ip6GroupMember table */
10278 10278 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10279 10279 optp->level = MIB2_IP6;
10280 10280 optp->name = EXPER_IP6_GROUP_MEMBERSHIP;
10281 10281
10282 10282 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10283 10283 ill = ILL_START_WALK_V6(&ctx, ipst);
10284 10284 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10285 10285 /* Make sure the ill isn't going away. */
10286 10286 if (!ill_check_and_refhold(ill))
10287 10287 continue;
10288 10288 rw_exit(&ipst->ips_ill_g_lock);
10289 10289 /*
10290 10290 * Normally we don't have any members on under IPMP interfaces.
10291 10291 * We report them as a debugging aid.
10292 10292 */
10293 10293 rw_enter(&ill->ill_mcast_lock, RW_READER);
10294 10294 ipm6.ipv6GroupMemberIfIndex = ill->ill_phyint->phyint_ifindex;
10295 10295 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10296 10296 if (ilm->ilm_zoneid != zoneid &&
10297 10297 ilm->ilm_zoneid != ALL_ZONES)
10298 10298 continue; /* not this zone */
10299 10299 ipm6.ipv6GroupMemberAddress = ilm->ilm_v6addr;
10300 10300 ipm6.ipv6GroupMemberRefCnt = ilm->ilm_refcnt;
10301 10301 ipm6.ipv6GroupMemberFilterMode = ilm->ilm_fmode;
10302 10302 if (!snmp_append_data2(mpctl->b_cont,
10303 10303 &mp_tail,
10304 10304 (char *)&ipm6, (int)sizeof (ipm6))) {
10305 10305 ip1dbg(("ip_snmp_get_mib2_ip6_group: "
10306 10306 "failed to allocate %u bytes\n",
10307 10307 (uint_t)sizeof (ipm6)));
10308 10308 }
10309 10309 }
10310 10310 rw_exit(&ill->ill_mcast_lock);
10311 10311 ill_refrele(ill);
10312 10312 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10313 10313 }
10314 10314 rw_exit(&ipst->ips_ill_g_lock);
10315 10315
10316 10316 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10317 10317 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10318 10318 (int)optp->level, (int)optp->name, (int)optp->len));
10319 10319 qreply(q, mpctl);
10320 10320 return (mp2ctl);
10321 10321 }
10322 10322
10323 10323 /* IP multicast filtered sources */
10324 10324 static mblk_t *
10325 10325 ip_snmp_get_mib2_ip_group_src(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10326 10326 {
10327 10327 struct opthdr *optp;
10328 10328 mblk_t *mp2ctl;
10329 10329 ill_t *ill;
10330 10330 ipif_t *ipif;
10331 10331 ilm_t *ilm;
10332 10332 ip_grpsrc_t ips;
10333 10333 mblk_t *mp_tail = NULL;
10334 10334 ill_walk_context_t ctx;
10335 10335 zoneid_t zoneid;
10336 10336 int i;
10337 10337 slist_t *sl;
10338 10338
10339 10339 /*
10340 10340 * make a copy of the original message
10341 10341 */
10342 10342 mp2ctl = copymsg(mpctl);
10343 10343 zoneid = Q_TO_CONN(q)->conn_zoneid;
10344 10344
10345 10345 /* ipGroupSource table */
10346 10346 optp = (struct opthdr *)&mpctl->b_rptr[
10347 10347 sizeof (struct T_optmgmt_ack)];
10348 10348 optp->level = MIB2_IP;
10349 10349 optp->name = EXPER_IP_GROUP_SOURCES;
10350 10350
10351 10351 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10352 10352 ill = ILL_START_WALK_V4(&ctx, ipst);
10353 10353 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10354 10354 /* Make sure the ill isn't going away. */
10355 10355 if (!ill_check_and_refhold(ill))
10356 10356 continue;
10357 10357 rw_exit(&ipst->ips_ill_g_lock);
10358 10358 rw_enter(&ill->ill_mcast_lock, RW_READER);
10359 10359 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10360 10360 sl = ilm->ilm_filter;
10361 10361 if (ilm->ilm_zoneid != zoneid &&
10362 10362 ilm->ilm_zoneid != ALL_ZONES)
10363 10363 continue;
10364 10364 if (SLIST_IS_EMPTY(sl))
10365 10365 continue;
10366 10366
10367 10367 /* Is there an ipif for ilm_ifaddr? */
10368 10368 for (ipif = ill->ill_ipif; ipif != NULL;
10369 10369 ipif = ipif->ipif_next) {
10370 10370 if (!IPIF_IS_CONDEMNED(ipif) &&
10371 10371 ipif->ipif_lcl_addr == ilm->ilm_ifaddr &&
10372 10372 ilm->ilm_ifaddr != INADDR_ANY)
10373 10373 break;
10374 10374 }
10375 10375 if (ipif != NULL) {
10376 10376 ipif_get_name(ipif,
10377 10377 ips.ipGroupSourceIfIndex.o_bytes,
10378 10378 OCTET_LENGTH);
10379 10379 } else {
10380 10380 ill_get_name(ill,
10381 10381 ips.ipGroupSourceIfIndex.o_bytes,
10382 10382 OCTET_LENGTH);
10383 10383 }
10384 10384 ips.ipGroupSourceIfIndex.o_length =
10385 10385 mi_strlen(ips.ipGroupSourceIfIndex.o_bytes);
10386 10386
10387 10387 ips.ipGroupSourceGroup = ilm->ilm_addr;
10388 10388 for (i = 0; i < sl->sl_numsrc; i++) {
10389 10389 if (!IN6_IS_ADDR_V4MAPPED(&sl->sl_addr[i]))
10390 10390 continue;
10391 10391 IN6_V4MAPPED_TO_IPADDR(&sl->sl_addr[i],
10392 10392 ips.ipGroupSourceAddress);
10393 10393 if (snmp_append_data2(mpctl->b_cont, &mp_tail,
10394 10394 (char *)&ips, (int)sizeof (ips)) == 0) {
10395 10395 ip1dbg(("ip_snmp_get_mib2_ip_group_src:"
10396 10396 " failed to allocate %u bytes\n",
10397 10397 (uint_t)sizeof (ips)));
10398 10398 }
10399 10399 }
10400 10400 }
10401 10401 rw_exit(&ill->ill_mcast_lock);
10402 10402 ill_refrele(ill);
10403 10403 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10404 10404 }
10405 10405 rw_exit(&ipst->ips_ill_g_lock);
10406 10406 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10407 10407 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10408 10408 (int)optp->level, (int)optp->name, (int)optp->len));
10409 10409 qreply(q, mpctl);
10410 10410 return (mp2ctl);
10411 10411 }
10412 10412
10413 10413 /* IPv6 multicast filtered sources. */
10414 10414 static mblk_t *
10415 10415 ip_snmp_get_mib2_ip6_group_src(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10416 10416 {
10417 10417 struct opthdr *optp;
10418 10418 mblk_t *mp2ctl;
10419 10419 ill_t *ill;
10420 10420 ilm_t *ilm;
10421 10421 ipv6_grpsrc_t ips6;
10422 10422 mblk_t *mp_tail = NULL;
10423 10423 ill_walk_context_t ctx;
10424 10424 zoneid_t zoneid;
10425 10425 int i;
10426 10426 slist_t *sl;
10427 10427
10428 10428 /*
10429 10429 * make a copy of the original message
10430 10430 */
10431 10431 mp2ctl = copymsg(mpctl);
10432 10432 zoneid = Q_TO_CONN(q)->conn_zoneid;
10433 10433
10434 10434 /* ip6GroupMember table */
10435 10435 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10436 10436 optp->level = MIB2_IP6;
10437 10437 optp->name = EXPER_IP6_GROUP_SOURCES;
10438 10438
10439 10439 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10440 10440 ill = ILL_START_WALK_V6(&ctx, ipst);
10441 10441 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10442 10442 /* Make sure the ill isn't going away. */
10443 10443 if (!ill_check_and_refhold(ill))
10444 10444 continue;
10445 10445 rw_exit(&ipst->ips_ill_g_lock);
10446 10446 /*
10447 10447 * Normally we don't have any members on under IPMP interfaces.
10448 10448 * We report them as a debugging aid.
10449 10449 */
10450 10450 rw_enter(&ill->ill_mcast_lock, RW_READER);
10451 10451 ips6.ipv6GroupSourceIfIndex = ill->ill_phyint->phyint_ifindex;
10452 10452 for (ilm = ill->ill_ilm; ilm; ilm = ilm->ilm_next) {
10453 10453 sl = ilm->ilm_filter;
10454 10454 if (ilm->ilm_zoneid != zoneid &&
10455 10455 ilm->ilm_zoneid != ALL_ZONES)
10456 10456 continue;
10457 10457 if (SLIST_IS_EMPTY(sl))
10458 10458 continue;
10459 10459 ips6.ipv6GroupSourceGroup = ilm->ilm_v6addr;
10460 10460 for (i = 0; i < sl->sl_numsrc; i++) {
10461 10461 ips6.ipv6GroupSourceAddress = sl->sl_addr[i];
10462 10462 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10463 10463 (char *)&ips6, (int)sizeof (ips6))) {
10464 10464 ip1dbg(("ip_snmp_get_mib2_ip6_"
10465 10465 "group_src: failed to allocate "
10466 10466 "%u bytes\n",
10467 10467 (uint_t)sizeof (ips6)));
10468 10468 }
10469 10469 }
10470 10470 }
10471 10471 rw_exit(&ill->ill_mcast_lock);
10472 10472 ill_refrele(ill);
10473 10473 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10474 10474 }
10475 10475 rw_exit(&ipst->ips_ill_g_lock);
10476 10476
10477 10477 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10478 10478 ip3dbg(("ip_snmp_get: level %d, name %d, len %d\n",
10479 10479 (int)optp->level, (int)optp->name, (int)optp->len));
10480 10480 qreply(q, mpctl);
10481 10481 return (mp2ctl);
10482 10482 }
10483 10483
10484 10484 /* Multicast routing virtual interface table. */
10485 10485 static mblk_t *
10486 10486 ip_snmp_get_mib2_virt_multi(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10487 10487 {
10488 10488 struct opthdr *optp;
10489 10489 mblk_t *mp2ctl;
10490 10490
10491 10491 /*
10492 10492 * make a copy of the original message
10493 10493 */
10494 10494 mp2ctl = copymsg(mpctl);
10495 10495
10496 10496 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10497 10497 optp->level = EXPER_DVMRP;
10498 10498 optp->name = EXPER_DVMRP_VIF;
10499 10499 if (!ip_mroute_vif(mpctl->b_cont, ipst)) {
10500 10500 ip0dbg(("ip_mroute_vif: failed\n"));
10501 10501 }
10502 10502 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10503 10503 ip3dbg(("ip_snmp_get_mib2_virt_multi: level %d, name %d, len %d\n",
10504 10504 (int)optp->level, (int)optp->name, (int)optp->len));
10505 10505 qreply(q, mpctl);
10506 10506 return (mp2ctl);
10507 10507 }
10508 10508
10509 10509 /* Multicast routing table. */
10510 10510 static mblk_t *
10511 10511 ip_snmp_get_mib2_multi_rtable(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10512 10512 {
10513 10513 struct opthdr *optp;
10514 10514 mblk_t *mp2ctl;
10515 10515
10516 10516 /*
10517 10517 * make a copy of the original message
10518 10518 */
10519 10519 mp2ctl = copymsg(mpctl);
10520 10520
10521 10521 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10522 10522 optp->level = EXPER_DVMRP;
10523 10523 optp->name = EXPER_DVMRP_MRT;
10524 10524 if (!ip_mroute_mrt(mpctl->b_cont, ipst)) {
10525 10525 ip0dbg(("ip_mroute_mrt: failed\n"));
10526 10526 }
10527 10527 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10528 10528 ip3dbg(("ip_snmp_get_mib2_multi_rtable: level %d, name %d, len %d\n",
10529 10529 (int)optp->level, (int)optp->name, (int)optp->len));
10530 10530 qreply(q, mpctl);
10531 10531 return (mp2ctl);
10532 10532 }
10533 10533
10534 10534 /*
10535 10535 * Return ipRouteEntryTable, ipNetToMediaEntryTable, and ipRouteAttributeTable
10536 10536 * in one IRE walk.
10537 10537 */
10538 10538 static mblk_t *
10539 10539 ip_snmp_get_mib2_ip_route_media(queue_t *q, mblk_t *mpctl, int level,
10540 10540 ip_stack_t *ipst)
10541 10541 {
10542 10542 struct opthdr *optp;
10543 10543 mblk_t *mp2ctl; /* Returned */
10544 10544 mblk_t *mp3ctl; /* nettomedia */
10545 10545 mblk_t *mp4ctl; /* routeattrs */
10546 10546 iproutedata_t ird;
10547 10547 zoneid_t zoneid;
10548 10548
10549 10549 /*
10550 10550 * make copies of the original message
10551 10551 * - mp2ctl is returned unchanged to the caller for his use
10552 10552 * - mpctl is sent upstream as ipRouteEntryTable
10553 10553 * - mp3ctl is sent upstream as ipNetToMediaEntryTable
10554 10554 * - mp4ctl is sent upstream as ipRouteAttributeTable
10555 10555 */
10556 10556 mp2ctl = copymsg(mpctl);
10557 10557 mp3ctl = copymsg(mpctl);
10558 10558 mp4ctl = copymsg(mpctl);
10559 10559 if (mp3ctl == NULL || mp4ctl == NULL) {
10560 10560 freemsg(mp4ctl);
10561 10561 freemsg(mp3ctl);
10562 10562 freemsg(mp2ctl);
10563 10563 freemsg(mpctl);
10564 10564 return (NULL);
10565 10565 }
10566 10566
10567 10567 bzero(&ird, sizeof (ird));
10568 10568
10569 10569 ird.ird_route.lp_head = mpctl->b_cont;
10570 10570 ird.ird_netmedia.lp_head = mp3ctl->b_cont;
10571 10571 ird.ird_attrs.lp_head = mp4ctl->b_cont;
10572 10572 /*
10573 10573 * If the level has been set the special EXPER_IP_AND_ALL_IRES value,
10574 10574 * then also include ire_testhidden IREs and IRE_IF_CLONE. This is
10575 10575 * intended a temporary solution until a proper MIB API is provided
10576 10576 * that provides complete filtering/caller-opt-in.
10577 10577 */
10578 10578 if (level == EXPER_IP_AND_ALL_IRES)
10579 10579 ird.ird_flags |= IRD_REPORT_ALL;
10580 10580
10581 10581 zoneid = Q_TO_CONN(q)->conn_zoneid;
10582 10582 ire_walk_v4(ip_snmp_get2_v4, &ird, zoneid, ipst);
10583 10583
10584 10584 /* ipRouteEntryTable in mpctl */
10585 10585 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10586 10586 optp->level = MIB2_IP;
10587 10587 optp->name = MIB2_IP_ROUTE;
10588 10588 optp->len = msgdsize(ird.ird_route.lp_head);
10589 10589 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10590 10590 (int)optp->level, (int)optp->name, (int)optp->len));
10591 10591 qreply(q, mpctl);
10592 10592
10593 10593 /* ipNetToMediaEntryTable in mp3ctl */
10594 10594 ncec_walk(NULL, ip_snmp_get2_v4_media, &ird, ipst);
10595 10595
10596 10596 optp = (struct opthdr *)&mp3ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10597 10597 optp->level = MIB2_IP;
10598 10598 optp->name = MIB2_IP_MEDIA;
10599 10599 optp->len = msgdsize(ird.ird_netmedia.lp_head);
10600 10600 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10601 10601 (int)optp->level, (int)optp->name, (int)optp->len));
10602 10602 qreply(q, mp3ctl);
10603 10603
10604 10604 /* ipRouteAttributeTable in mp4ctl */
10605 10605 optp = (struct opthdr *)&mp4ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10606 10606 optp->level = MIB2_IP;
10607 10607 optp->name = EXPER_IP_RTATTR;
10608 10608 optp->len = msgdsize(ird.ird_attrs.lp_head);
10609 10609 ip3dbg(("ip_snmp_get_mib2_ip_route_media: level %d, name %d, len %d\n",
10610 10610 (int)optp->level, (int)optp->name, (int)optp->len));
10611 10611 if (optp->len == 0)
10612 10612 freemsg(mp4ctl);
10613 10613 else
10614 10614 qreply(q, mp4ctl);
10615 10615
10616 10616 return (mp2ctl);
10617 10617 }
10618 10618
10619 10619 /*
10620 10620 * Return ipv6RouteEntryTable and ipv6RouteAttributeTable in one IRE walk, and
10621 10621 * ipv6NetToMediaEntryTable in an NDP walk.
10622 10622 */
10623 10623 static mblk_t *
10624 10624 ip_snmp_get_mib2_ip6_route_media(queue_t *q, mblk_t *mpctl, int level,
10625 10625 ip_stack_t *ipst)
10626 10626 {
10627 10627 struct opthdr *optp;
10628 10628 mblk_t *mp2ctl; /* Returned */
10629 10629 mblk_t *mp3ctl; /* nettomedia */
10630 10630 mblk_t *mp4ctl; /* routeattrs */
10631 10631 iproutedata_t ird;
10632 10632 zoneid_t zoneid;
10633 10633
10634 10634 /*
10635 10635 * make copies of the original message
10636 10636 * - mp2ctl is returned unchanged to the caller for his use
10637 10637 * - mpctl is sent upstream as ipv6RouteEntryTable
10638 10638 * - mp3ctl is sent upstream as ipv6NetToMediaEntryTable
10639 10639 * - mp4ctl is sent upstream as ipv6RouteAttributeTable
10640 10640 */
10641 10641 mp2ctl = copymsg(mpctl);
10642 10642 mp3ctl = copymsg(mpctl);
10643 10643 mp4ctl = copymsg(mpctl);
10644 10644 if (mp3ctl == NULL || mp4ctl == NULL) {
10645 10645 freemsg(mp4ctl);
10646 10646 freemsg(mp3ctl);
10647 10647 freemsg(mp2ctl);
10648 10648 freemsg(mpctl);
10649 10649 return (NULL);
10650 10650 }
10651 10651
10652 10652 bzero(&ird, sizeof (ird));
10653 10653
10654 10654 ird.ird_route.lp_head = mpctl->b_cont;
10655 10655 ird.ird_netmedia.lp_head = mp3ctl->b_cont;
10656 10656 ird.ird_attrs.lp_head = mp4ctl->b_cont;
10657 10657 /*
10658 10658 * If the level has been set the special EXPER_IP_AND_ALL_IRES value,
10659 10659 * then also include ire_testhidden IREs and IRE_IF_CLONE. This is
10660 10660 * intended a temporary solution until a proper MIB API is provided
10661 10661 * that provides complete filtering/caller-opt-in.
10662 10662 */
10663 10663 if (level == EXPER_IP_AND_ALL_IRES)
10664 10664 ird.ird_flags |= IRD_REPORT_ALL;
10665 10665
10666 10666 zoneid = Q_TO_CONN(q)->conn_zoneid;
10667 10667 ire_walk_v6(ip_snmp_get2_v6_route, &ird, zoneid, ipst);
10668 10668
10669 10669 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10670 10670 optp->level = MIB2_IP6;
10671 10671 optp->name = MIB2_IP6_ROUTE;
10672 10672 optp->len = msgdsize(ird.ird_route.lp_head);
10673 10673 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10674 10674 (int)optp->level, (int)optp->name, (int)optp->len));
10675 10675 qreply(q, mpctl);
10676 10676
10677 10677 /* ipv6NetToMediaEntryTable in mp3ctl */
10678 10678 ncec_walk(NULL, ip_snmp_get2_v6_media, &ird, ipst);
10679 10679
10680 10680 optp = (struct opthdr *)&mp3ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10681 10681 optp->level = MIB2_IP6;
10682 10682 optp->name = MIB2_IP6_MEDIA;
10683 10683 optp->len = msgdsize(ird.ird_netmedia.lp_head);
10684 10684 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10685 10685 (int)optp->level, (int)optp->name, (int)optp->len));
10686 10686 qreply(q, mp3ctl);
10687 10687
10688 10688 /* ipv6RouteAttributeTable in mp4ctl */
10689 10689 optp = (struct opthdr *)&mp4ctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10690 10690 optp->level = MIB2_IP6;
10691 10691 optp->name = EXPER_IP_RTATTR;
10692 10692 optp->len = msgdsize(ird.ird_attrs.lp_head);
10693 10693 ip3dbg(("ip_snmp_get_mib2_ip6_route_media: level %d, name %d, len %d\n",
10694 10694 (int)optp->level, (int)optp->name, (int)optp->len));
10695 10695 if (optp->len == 0)
10696 10696 freemsg(mp4ctl);
10697 10697 else
10698 10698 qreply(q, mp4ctl);
10699 10699
10700 10700 return (mp2ctl);
10701 10701 }
10702 10702
10703 10703 /*
10704 10704 * IPv6 mib: One per ill
10705 10705 */
10706 10706 static mblk_t *
10707 10707 ip_snmp_get_mib2_ip6(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst,
10708 10708 boolean_t legacy_req)
10709 10709 {
10710 10710 struct opthdr *optp;
10711 10711 mblk_t *mp2ctl;
10712 10712 ill_t *ill;
10713 10713 ill_walk_context_t ctx;
10714 10714 mblk_t *mp_tail = NULL;
10715 10715 mib2_ipv6AddrEntry_t mae6;
10716 10716 mib2_ipIfStatsEntry_t *ise;
10717 10717 size_t ise_size, iae_size;
10718 10718
10719 10719 /*
10720 10720 * Make a copy of the original message
10721 10721 */
10722 10722 mp2ctl = copymsg(mpctl);
10723 10723
10724 10724 /* fixed length IPv6 structure ... */
10725 10725
10726 10726 if (legacy_req) {
10727 10727 ise_size = LEGACY_MIB_SIZE(&ipst->ips_ip6_mib,
10728 10728 mib2_ipIfStatsEntry_t);
10729 10729 iae_size = LEGACY_MIB_SIZE(&mae6, mib2_ipv6AddrEntry_t);
10730 10730 } else {
10731 10731 ise_size = sizeof (mib2_ipIfStatsEntry_t);
10732 10732 iae_size = sizeof (mib2_ipv6AddrEntry_t);
10733 10733 }
10734 10734
10735 10735 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10736 10736 optp->level = MIB2_IP6;
10737 10737 optp->name = 0;
10738 10738 /* Include "unknown interface" ip6_mib */
10739 10739 ipst->ips_ip6_mib.ipIfStatsIPVersion = MIB2_INETADDRESSTYPE_ipv6;
10740 10740 ipst->ips_ip6_mib.ipIfStatsIfIndex =
10741 10741 MIB2_UNKNOWN_INTERFACE; /* Flag to netstat */
10742 10742 SET_MIB(ipst->ips_ip6_mib.ipIfStatsForwarding,
10743 10743 ipst->ips_ipv6_forwarding ? 1 : 2);
10744 10744 SET_MIB(ipst->ips_ip6_mib.ipIfStatsDefaultHopLimit,
10745 10745 ipst->ips_ipv6_def_hops);
10746 10746 SET_MIB(ipst->ips_ip6_mib.ipIfStatsEntrySize,
10747 10747 sizeof (mib2_ipIfStatsEntry_t));
10748 10748 SET_MIB(ipst->ips_ip6_mib.ipIfStatsAddrEntrySize,
10749 10749 sizeof (mib2_ipv6AddrEntry_t));
10750 10750 SET_MIB(ipst->ips_ip6_mib.ipIfStatsRouteEntrySize,
10751 10751 sizeof (mib2_ipv6RouteEntry_t));
10752 10752 SET_MIB(ipst->ips_ip6_mib.ipIfStatsNetToMediaEntrySize,
10753 10753 sizeof (mib2_ipv6NetToMediaEntry_t));
10754 10754 SET_MIB(ipst->ips_ip6_mib.ipIfStatsMemberEntrySize,
10755 10755 sizeof (ipv6_member_t));
10756 10756 SET_MIB(ipst->ips_ip6_mib.ipIfStatsGroupSourceEntrySize,
10757 10757 sizeof (ipv6_grpsrc_t));
10758 10758
10759 10759 /*
10760 10760 * Synchronize 64- and 32-bit counters
10761 10761 */
10762 10762 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInReceives,
10763 10763 ipIfStatsHCInReceives);
10764 10764 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInDelivers,
10765 10765 ipIfStatsHCInDelivers);
10766 10766 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutRequests,
10767 10767 ipIfStatsHCOutRequests);
10768 10768 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutForwDatagrams,
10769 10769 ipIfStatsHCOutForwDatagrams);
10770 10770 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsOutMcastPkts,
10771 10771 ipIfStatsHCOutMcastPkts);
10772 10772 SYNC32_MIB(&ipst->ips_ip6_mib, ipIfStatsInMcastPkts,
10773 10773 ipIfStatsHCInMcastPkts);
10774 10774
10775 10775 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10776 10776 (char *)&ipst->ips_ip6_mib, (int)ise_size)) {
10777 10777 ip1dbg(("ip_snmp_get_mib2_ip6: failed to allocate %u bytes\n",
10778 10778 (uint_t)ise_size));
10779 10779 } else if (legacy_req) {
10780 10780 /* Adjust the EntrySize fields for legacy requests. */
10781 10781 ise =
10782 10782 (mib2_ipIfStatsEntry_t *)(mp_tail->b_wptr - (int)ise_size);
10783 10783 SET_MIB(ise->ipIfStatsEntrySize, ise_size);
10784 10784 SET_MIB(ise->ipIfStatsAddrEntrySize, iae_size);
10785 10785 }
10786 10786
10787 10787 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10788 10788 ill = ILL_START_WALK_V6(&ctx, ipst);
10789 10789 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10790 10790 ill->ill_ip_mib->ipIfStatsIfIndex =
10791 10791 ill->ill_phyint->phyint_ifindex;
10792 10792 SET_MIB(ill->ill_ip_mib->ipIfStatsForwarding,
10793 10793 ipst->ips_ipv6_forwarding ? 1 : 2);
10794 10794 SET_MIB(ill->ill_ip_mib->ipIfStatsDefaultHopLimit,
10795 10795 ill->ill_max_hops);
10796 10796
10797 10797 /*
10798 10798 * Synchronize 64- and 32-bit counters
10799 10799 */
10800 10800 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInReceives,
10801 10801 ipIfStatsHCInReceives);
10802 10802 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInDelivers,
10803 10803 ipIfStatsHCInDelivers);
10804 10804 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutRequests,
10805 10805 ipIfStatsHCOutRequests);
10806 10806 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutForwDatagrams,
10807 10807 ipIfStatsHCOutForwDatagrams);
10808 10808 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsOutMcastPkts,
10809 10809 ipIfStatsHCOutMcastPkts);
10810 10810 SYNC32_MIB(ill->ill_ip_mib, ipIfStatsInMcastPkts,
10811 10811 ipIfStatsHCInMcastPkts);
10812 10812
10813 10813 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10814 10814 (char *)ill->ill_ip_mib, (int)ise_size)) {
10815 10815 ip1dbg(("ip_snmp_get_mib2_ip6: failed to allocate "
10816 10816 "%u bytes\n", (uint_t)ise_size));
10817 10817 } else if (legacy_req) {
10818 10818 /* Adjust the EntrySize fields for legacy requests. */
10819 10819 ise = (mib2_ipIfStatsEntry_t *)(mp_tail->b_wptr -
10820 10820 (int)ise_size);
10821 10821 SET_MIB(ise->ipIfStatsEntrySize, ise_size);
10822 10822 SET_MIB(ise->ipIfStatsAddrEntrySize, iae_size);
10823 10823 }
10824 10824 }
10825 10825 rw_exit(&ipst->ips_ill_g_lock);
10826 10826
10827 10827 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10828 10828 ip3dbg(("ip_snmp_get_mib2_ip6: level %d, name %d, len %d\n",
10829 10829 (int)optp->level, (int)optp->name, (int)optp->len));
10830 10830 qreply(q, mpctl);
10831 10831 return (mp2ctl);
10832 10832 }
10833 10833
10834 10834 /*
10835 10835 * ICMPv6 mib: One per ill
10836 10836 */
10837 10837 static mblk_t *
10838 10838 ip_snmp_get_mib2_icmp6(queue_t *q, mblk_t *mpctl, ip_stack_t *ipst)
10839 10839 {
10840 10840 struct opthdr *optp;
10841 10841 mblk_t *mp2ctl;
10842 10842 ill_t *ill;
10843 10843 ill_walk_context_t ctx;
10844 10844 mblk_t *mp_tail = NULL;
10845 10845 /*
10846 10846 * Make a copy of the original message
10847 10847 */
10848 10848 mp2ctl = copymsg(mpctl);
10849 10849
10850 10850 /* fixed length ICMPv6 structure ... */
10851 10851
10852 10852 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
10853 10853 optp->level = MIB2_ICMP6;
10854 10854 optp->name = 0;
10855 10855 /* Include "unknown interface" icmp6_mib */
10856 10856 ipst->ips_icmp6_mib.ipv6IfIcmpIfIndex =
10857 10857 MIB2_UNKNOWN_INTERFACE; /* netstat flag */
10858 10858 ipst->ips_icmp6_mib.ipv6IfIcmpEntrySize =
10859 10859 sizeof (mib2_ipv6IfIcmpEntry_t);
10860 10860 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10861 10861 (char *)&ipst->ips_icmp6_mib,
10862 10862 (int)sizeof (ipst->ips_icmp6_mib))) {
10863 10863 ip1dbg(("ip_snmp_get_mib2_icmp6: failed to allocate %u bytes\n",
10864 10864 (uint_t)sizeof (ipst->ips_icmp6_mib)));
10865 10865 }
10866 10866
10867 10867 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
10868 10868 ill = ILL_START_WALK_V6(&ctx, ipst);
10869 10869 for (; ill != NULL; ill = ill_next(&ctx, ill)) {
10870 10870 ill->ill_icmp6_mib->ipv6IfIcmpIfIndex =
10871 10871 ill->ill_phyint->phyint_ifindex;
10872 10872 if (!snmp_append_data2(mpctl->b_cont, &mp_tail,
10873 10873 (char *)ill->ill_icmp6_mib,
10874 10874 (int)sizeof (*ill->ill_icmp6_mib))) {
10875 10875 ip1dbg(("ip_snmp_get_mib2_icmp6: failed to allocate "
10876 10876 "%u bytes\n",
10877 10877 (uint_t)sizeof (*ill->ill_icmp6_mib)));
10878 10878 }
10879 10879 }
10880 10880 rw_exit(&ipst->ips_ill_g_lock);
10881 10881
10882 10882 optp->len = (t_uscalar_t)msgdsize(mpctl->b_cont);
10883 10883 ip3dbg(("ip_snmp_get_mib2_icmp6: level %d, name %d, len %d\n",
10884 10884 (int)optp->level, (int)optp->name, (int)optp->len));
10885 10885 qreply(q, mpctl);
10886 10886 return (mp2ctl);
10887 10887 }
10888 10888
10889 10889 /*
10890 10890 * ire_walk routine to create both ipRouteEntryTable and
10891 10891 * ipRouteAttributeTable in one IRE walk
10892 10892 */
10893 10893 static void
10894 10894 ip_snmp_get2_v4(ire_t *ire, iproutedata_t *ird)
10895 10895 {
10896 10896 ill_t *ill;
10897 10897 mib2_ipRouteEntry_t *re;
10898 10898 mib2_ipAttributeEntry_t iaes;
10899 10899 tsol_ire_gw_secattr_t *attrp;
10900 10900 tsol_gc_t *gc = NULL;
10901 10901 tsol_gcgrp_t *gcgrp = NULL;
10902 10902 ip_stack_t *ipst = ire->ire_ipst;
10903 10903
10904 10904 ASSERT(ire->ire_ipversion == IPV4_VERSION);
10905 10905
10906 10906 if (!(ird->ird_flags & IRD_REPORT_ALL)) {
10907 10907 if (ire->ire_testhidden)
10908 10908 return;
10909 10909 if (ire->ire_type & IRE_IF_CLONE)
10910 10910 return;
10911 10911 }
10912 10912
10913 10913 if ((re = kmem_zalloc(sizeof (*re), KM_NOSLEEP)) == NULL)
10914 10914 return;
10915 10915
10916 10916 if ((attrp = ire->ire_gw_secattr) != NULL) {
10917 10917 mutex_enter(&attrp->igsa_lock);
10918 10918 if ((gc = attrp->igsa_gc) != NULL) {
10919 10919 gcgrp = gc->gc_grp;
10920 10920 ASSERT(gcgrp != NULL);
10921 10921 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER);
10922 10922 }
10923 10923 mutex_exit(&attrp->igsa_lock);
10924 10924 }
10925 10925 /*
10926 10926 * Return all IRE types for route table... let caller pick and choose
10927 10927 */
10928 10928 re->ipRouteDest = ire->ire_addr;
10929 10929 ill = ire->ire_ill;
10930 10930 re->ipRouteIfIndex.o_length = 0;
10931 10931 if (ill != NULL) {
10932 10932 ill_get_name(ill, re->ipRouteIfIndex.o_bytes, OCTET_LENGTH);
10933 10933 re->ipRouteIfIndex.o_length =
10934 10934 mi_strlen(re->ipRouteIfIndex.o_bytes);
10935 10935 }
10936 10936 re->ipRouteMetric1 = -1;
10937 10937 re->ipRouteMetric2 = -1;
10938 10938 re->ipRouteMetric3 = -1;
10939 10939 re->ipRouteMetric4 = -1;
10940 10940
10941 10941 re->ipRouteNextHop = ire->ire_gateway_addr;
10942 10942 /* indirect(4), direct(3), or invalid(2) */
10943 10943 if (ire->ire_flags & (RTF_REJECT | RTF_BLACKHOLE))
10944 10944 re->ipRouteType = 2;
10945 10945 else if (ire->ire_type & IRE_ONLINK)
10946 10946 re->ipRouteType = 3;
10947 10947 else
10948 10948 re->ipRouteType = 4;
10949 10949
10950 10950 re->ipRouteProto = -1;
10951 10951 re->ipRouteAge = gethrestime_sec() - ire->ire_create_time;
10952 10952 re->ipRouteMask = ire->ire_mask;
10953 10953 re->ipRouteMetric5 = -1;
10954 10954 re->ipRouteInfo.re_max_frag = ire->ire_metrics.iulp_mtu;
10955 10955 if (ire->ire_ill != NULL && re->ipRouteInfo.re_max_frag == 0)
10956 10956 re->ipRouteInfo.re_max_frag = ire->ire_ill->ill_mtu;
10957 10957
10958 10958 re->ipRouteInfo.re_frag_flag = 0;
10959 10959 re->ipRouteInfo.re_rtt = 0;
10960 10960 re->ipRouteInfo.re_src_addr = 0;
10961 10961 re->ipRouteInfo.re_ref = ire->ire_refcnt;
10962 10962 re->ipRouteInfo.re_obpkt = ire->ire_ob_pkt_count;
10963 10963 re->ipRouteInfo.re_ibpkt = ire->ire_ib_pkt_count;
10964 10964 re->ipRouteInfo.re_flags = ire->ire_flags;
10965 10965
10966 10966 /* Add the IRE_IF_CLONE's counters to their parent IRE_INTERFACE */
10967 10967 if (ire->ire_type & IRE_INTERFACE) {
10968 10968 ire_t *child;
10969 10969
10970 10970 rw_enter(&ipst->ips_ire_dep_lock, RW_READER);
10971 10971 child = ire->ire_dep_children;
10972 10972 while (child != NULL) {
10973 10973 re->ipRouteInfo.re_obpkt += child->ire_ob_pkt_count;
10974 10974 re->ipRouteInfo.re_ibpkt += child->ire_ib_pkt_count;
10975 10975 child = child->ire_dep_sib_next;
10976 10976 }
10977 10977 rw_exit(&ipst->ips_ire_dep_lock);
10978 10978 }
10979 10979
10980 10980 if (ire->ire_flags & RTF_DYNAMIC) {
10981 10981 re->ipRouteInfo.re_ire_type = IRE_HOST_REDIRECT;
10982 10982 } else {
10983 10983 re->ipRouteInfo.re_ire_type = ire->ire_type;
10984 10984 }
10985 10985
10986 10986 if (!snmp_append_data2(ird->ird_route.lp_head, &ird->ird_route.lp_tail,
10987 10987 (char *)re, (int)sizeof (*re))) {
10988 10988 ip1dbg(("ip_snmp_get2_v4: failed to allocate %u bytes\n",
10989 10989 (uint_t)sizeof (*re)));
10990 10990 }
10991 10991
10992 10992 if (gc != NULL) {
10993 10993 iaes.iae_routeidx = ird->ird_idx;
10994 10994 iaes.iae_doi = gc->gc_db->gcdb_doi;
10995 10995 iaes.iae_slrange = gc->gc_db->gcdb_slrange;
10996 10996
10997 10997 if (!snmp_append_data2(ird->ird_attrs.lp_head,
10998 10998 &ird->ird_attrs.lp_tail, (char *)&iaes, sizeof (iaes))) {
10999 10999 ip1dbg(("ip_snmp_get2_v4: failed to allocate %u "
11000 11000 "bytes\n", (uint_t)sizeof (iaes)));
11001 11001 }
11002 11002 }
11003 11003
11004 11004 /* bump route index for next pass */
11005 11005 ird->ird_idx++;
11006 11006
11007 11007 kmem_free(re, sizeof (*re));
11008 11008 if (gcgrp != NULL)
11009 11009 rw_exit(&gcgrp->gcgrp_rwlock);
11010 11010 }
11011 11011
11012 11012 /*
11013 11013 * ire_walk routine to create ipv6RouteEntryTable and ipRouteEntryTable.
11014 11014 */
11015 11015 static void
11016 11016 ip_snmp_get2_v6_route(ire_t *ire, iproutedata_t *ird)
11017 11017 {
11018 11018 ill_t *ill;
11019 11019 mib2_ipv6RouteEntry_t *re;
11020 11020 mib2_ipAttributeEntry_t iaes;
11021 11021 tsol_ire_gw_secattr_t *attrp;
11022 11022 tsol_gc_t *gc = NULL;
11023 11023 tsol_gcgrp_t *gcgrp = NULL;
11024 11024 ip_stack_t *ipst = ire->ire_ipst;
11025 11025
11026 11026 ASSERT(ire->ire_ipversion == IPV6_VERSION);
11027 11027
11028 11028 if (!(ird->ird_flags & IRD_REPORT_ALL)) {
11029 11029 if (ire->ire_testhidden)
11030 11030 return;
11031 11031 if (ire->ire_type & IRE_IF_CLONE)
11032 11032 return;
11033 11033 }
11034 11034
11035 11035 if ((re = kmem_zalloc(sizeof (*re), KM_NOSLEEP)) == NULL)
11036 11036 return;
11037 11037
11038 11038 if ((attrp = ire->ire_gw_secattr) != NULL) {
11039 11039 mutex_enter(&attrp->igsa_lock);
11040 11040 if ((gc = attrp->igsa_gc) != NULL) {
11041 11041 gcgrp = gc->gc_grp;
11042 11042 ASSERT(gcgrp != NULL);
11043 11043 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER);
11044 11044 }
11045 11045 mutex_exit(&attrp->igsa_lock);
11046 11046 }
11047 11047 /*
11048 11048 * Return all IRE types for route table... let caller pick and choose
11049 11049 */
11050 11050 re->ipv6RouteDest = ire->ire_addr_v6;
11051 11051 re->ipv6RoutePfxLength = ip_mask_to_plen_v6(&ire->ire_mask_v6);
11052 11052 re->ipv6RouteIndex = 0; /* Unique when multiple with same dest/plen */
11053 11053 re->ipv6RouteIfIndex.o_length = 0;
11054 11054 ill = ire->ire_ill;
11055 11055 if (ill != NULL) {
11056 11056 ill_get_name(ill, re->ipv6RouteIfIndex.o_bytes, OCTET_LENGTH);
11057 11057 re->ipv6RouteIfIndex.o_length =
11058 11058 mi_strlen(re->ipv6RouteIfIndex.o_bytes);
11059 11059 }
11060 11060
11061 11061 ASSERT(!(ire->ire_type & IRE_BROADCAST));
11062 11062
11063 11063 mutex_enter(&ire->ire_lock);
11064 11064 re->ipv6RouteNextHop = ire->ire_gateway_addr_v6;
11065 11065 mutex_exit(&ire->ire_lock);
11066 11066
11067 11067 /* remote(4), local(3), or discard(2) */
11068 11068 if (ire->ire_flags & (RTF_REJECT | RTF_BLACKHOLE))
11069 11069 re->ipv6RouteType = 2;
11070 11070 else if (ire->ire_type & IRE_ONLINK)
11071 11071 re->ipv6RouteType = 3;
11072 11072 else
11073 11073 re->ipv6RouteType = 4;
11074 11074
11075 11075 re->ipv6RouteProtocol = -1;
11076 11076 re->ipv6RoutePolicy = 0;
11077 11077 re->ipv6RouteAge = gethrestime_sec() - ire->ire_create_time;
11078 11078 re->ipv6RouteNextHopRDI = 0;
11079 11079 re->ipv6RouteWeight = 0;
11080 11080 re->ipv6RouteMetric = 0;
11081 11081 re->ipv6RouteInfo.re_max_frag = ire->ire_metrics.iulp_mtu;
11082 11082 if (ire->ire_ill != NULL && re->ipv6RouteInfo.re_max_frag == 0)
11083 11083 re->ipv6RouteInfo.re_max_frag = ire->ire_ill->ill_mtu;
11084 11084
11085 11085 re->ipv6RouteInfo.re_frag_flag = 0;
11086 11086 re->ipv6RouteInfo.re_rtt = 0;
11087 11087 re->ipv6RouteInfo.re_src_addr = ipv6_all_zeros;
11088 11088 re->ipv6RouteInfo.re_obpkt = ire->ire_ob_pkt_count;
11089 11089 re->ipv6RouteInfo.re_ibpkt = ire->ire_ib_pkt_count;
11090 11090 re->ipv6RouteInfo.re_ref = ire->ire_refcnt;
11091 11091 re->ipv6RouteInfo.re_flags = ire->ire_flags;
11092 11092
11093 11093 /* Add the IRE_IF_CLONE's counters to their parent IRE_INTERFACE */
11094 11094 if (ire->ire_type & IRE_INTERFACE) {
11095 11095 ire_t *child;
11096 11096
11097 11097 rw_enter(&ipst->ips_ire_dep_lock, RW_READER);
11098 11098 child = ire->ire_dep_children;
11099 11099 while (child != NULL) {
11100 11100 re->ipv6RouteInfo.re_obpkt += child->ire_ob_pkt_count;
11101 11101 re->ipv6RouteInfo.re_ibpkt += child->ire_ib_pkt_count;
11102 11102 child = child->ire_dep_sib_next;
11103 11103 }
11104 11104 rw_exit(&ipst->ips_ire_dep_lock);
11105 11105 }
11106 11106 if (ire->ire_flags & RTF_DYNAMIC) {
11107 11107 re->ipv6RouteInfo.re_ire_type = IRE_HOST_REDIRECT;
11108 11108 } else {
11109 11109 re->ipv6RouteInfo.re_ire_type = ire->ire_type;
11110 11110 }
11111 11111
11112 11112 if (!snmp_append_data2(ird->ird_route.lp_head, &ird->ird_route.lp_tail,
11113 11113 (char *)re, (int)sizeof (*re))) {
11114 11114 ip1dbg(("ip_snmp_get2_v6: failed to allocate %u bytes\n",
11115 11115 (uint_t)sizeof (*re)));
11116 11116 }
11117 11117
11118 11118 if (gc != NULL) {
11119 11119 iaes.iae_routeidx = ird->ird_idx;
11120 11120 iaes.iae_doi = gc->gc_db->gcdb_doi;
11121 11121 iaes.iae_slrange = gc->gc_db->gcdb_slrange;
11122 11122
11123 11123 if (!snmp_append_data2(ird->ird_attrs.lp_head,
11124 11124 &ird->ird_attrs.lp_tail, (char *)&iaes, sizeof (iaes))) {
11125 11125 ip1dbg(("ip_snmp_get2_v6: failed to allocate %u "
11126 11126 "bytes\n", (uint_t)sizeof (iaes)));
11127 11127 }
11128 11128 }
11129 11129
11130 11130 /* bump route index for next pass */
11131 11131 ird->ird_idx++;
11132 11132
11133 11133 kmem_free(re, sizeof (*re));
11134 11134 if (gcgrp != NULL)
11135 11135 rw_exit(&gcgrp->gcgrp_rwlock);
11136 11136 }
11137 11137
11138 11138 /*
11139 11139 * ncec_walk routine to create ipv6NetToMediaEntryTable
11140 11140 */
11141 11141 static int
11142 11142 ip_snmp_get2_v6_media(ncec_t *ncec, iproutedata_t *ird)
11143 11143 {
11144 11144 ill_t *ill;
11145 11145 mib2_ipv6NetToMediaEntry_t ntme;
11146 11146
11147 11147 ill = ncec->ncec_ill;
11148 11148 /* skip arpce entries, and loopback ncec entries */
11149 11149 if (ill->ill_isv6 == B_FALSE || ill->ill_net_type == IRE_LOOPBACK)
11150 11150 return (0);
11151 11151 /*
11152 11152 * Neighbor cache entry attached to IRE with on-link
11153 11153 * destination.
11154 11154 * We report all IPMP groups on ncec_ill which is normally the upper.
11155 11155 */
11156 11156 ntme.ipv6NetToMediaIfIndex = ill->ill_phyint->phyint_ifindex;
11157 11157 ntme.ipv6NetToMediaNetAddress = ncec->ncec_addr;
11158 11158 ntme.ipv6NetToMediaPhysAddress.o_length = ill->ill_phys_addr_length;
11159 11159 if (ncec->ncec_lladdr != NULL) {
11160 11160 bcopy(ncec->ncec_lladdr, ntme.ipv6NetToMediaPhysAddress.o_bytes,
11161 11161 ntme.ipv6NetToMediaPhysAddress.o_length);
11162 11162 }
11163 11163 /*
11164 11164 * Note: Returns ND_* states. Should be:
11165 11165 * reachable(1), stale(2), delay(3), probe(4),
11166 11166 * invalid(5), unknown(6)
11167 11167 */
11168 11168 ntme.ipv6NetToMediaState = ncec->ncec_state;
11169 11169 ntme.ipv6NetToMediaLastUpdated = 0;
11170 11170
11171 11171 /* other(1), dynamic(2), static(3), local(4) */
11172 11172 if (NCE_MYADDR(ncec)) {
11173 11173 ntme.ipv6NetToMediaType = 4;
11174 11174 } else if (ncec->ncec_flags & NCE_F_PUBLISH) {
11175 11175 ntme.ipv6NetToMediaType = 1; /* proxy */
11176 11176 } else if (ncec->ncec_flags & NCE_F_STATIC) {
11177 11177 ntme.ipv6NetToMediaType = 3;
11178 11178 } else if (ncec->ncec_flags & (NCE_F_MCAST|NCE_F_BCAST)) {
11179 11179 ntme.ipv6NetToMediaType = 1;
11180 11180 } else {
11181 11181 ntme.ipv6NetToMediaType = 2;
11182 11182 }
11183 11183
11184 11184 if (!snmp_append_data2(ird->ird_netmedia.lp_head,
11185 11185 &ird->ird_netmedia.lp_tail, (char *)&ntme, sizeof (ntme))) {
11186 11186 ip1dbg(("ip_snmp_get2_v6_media: failed to allocate %u bytes\n",
11187 11187 (uint_t)sizeof (ntme)));
11188 11188 }
11189 11189 return (0);
11190 11190 }
11191 11191
11192 11192 int
11193 11193 nce2ace(ncec_t *ncec)
11194 11194 {
11195 11195 int flags = 0;
11196 11196
11197 11197 if (NCE_ISREACHABLE(ncec))
11198 11198 flags |= ACE_F_RESOLVED;
11199 11199 if (ncec->ncec_flags & NCE_F_AUTHORITY)
11200 11200 flags |= ACE_F_AUTHORITY;
11201 11201 if (ncec->ncec_flags & NCE_F_PUBLISH)
11202 11202 flags |= ACE_F_PUBLISH;
11203 11203 if ((ncec->ncec_flags & NCE_F_NONUD) != 0)
11204 11204 flags |= ACE_F_PERMANENT;
11205 11205 if (NCE_MYADDR(ncec))
11206 11206 flags |= (ACE_F_MYADDR | ACE_F_AUTHORITY);
11207 11207 if (ncec->ncec_flags & NCE_F_UNVERIFIED)
11208 11208 flags |= ACE_F_UNVERIFIED;
11209 11209 if (ncec->ncec_flags & NCE_F_AUTHORITY)
11210 11210 flags |= ACE_F_AUTHORITY;
11211 11211 if (ncec->ncec_flags & NCE_F_DELAYED)
11212 11212 flags |= ACE_F_DELAYED;
11213 11213 return (flags);
11214 11214 }
11215 11215
11216 11216 /*
11217 11217 * ncec_walk routine to create ipNetToMediaEntryTable
11218 11218 */
11219 11219 static int
11220 11220 ip_snmp_get2_v4_media(ncec_t *ncec, iproutedata_t *ird)
11221 11221 {
11222 11222 ill_t *ill;
11223 11223 mib2_ipNetToMediaEntry_t ntme;
11224 11224 const char *name = "unknown";
11225 11225 ipaddr_t ncec_addr;
11226 11226
11227 11227 ill = ncec->ncec_ill;
11228 11228 if (ill->ill_isv6 || (ncec->ncec_flags & NCE_F_BCAST) ||
11229 11229 ill->ill_net_type == IRE_LOOPBACK)
11230 11230 return (0);
11231 11231
11232 11232 /* We report all IPMP groups on ncec_ill which is normally the upper. */
11233 11233 name = ill->ill_name;
11234 11234 /* Based on RFC 4293: other(1), inval(2), dyn(3), stat(4) */
11235 11235 if (NCE_MYADDR(ncec)) {
11236 11236 ntme.ipNetToMediaType = 4;
11237 11237 } else if (ncec->ncec_flags & (NCE_F_MCAST|NCE_F_BCAST|NCE_F_PUBLISH)) {
11238 11238 ntme.ipNetToMediaType = 1;
11239 11239 } else {
11240 11240 ntme.ipNetToMediaType = 3;
11241 11241 }
11242 11242 ntme.ipNetToMediaIfIndex.o_length = MIN(OCTET_LENGTH, strlen(name));
11243 11243 bcopy(name, ntme.ipNetToMediaIfIndex.o_bytes,
11244 11244 ntme.ipNetToMediaIfIndex.o_length);
11245 11245
11246 11246 IN6_V4MAPPED_TO_IPADDR(&ncec->ncec_addr, ncec_addr);
11247 11247 bcopy(&ncec_addr, &ntme.ipNetToMediaNetAddress, sizeof (ncec_addr));
11248 11248
11249 11249 ntme.ipNetToMediaInfo.ntm_mask.o_length = sizeof (ipaddr_t);
11250 11250 ncec_addr = INADDR_BROADCAST;
11251 11251 bcopy(&ncec_addr, ntme.ipNetToMediaInfo.ntm_mask.o_bytes,
11252 11252 sizeof (ncec_addr));
11253 11253 /*
11254 11254 * map all the flags to the ACE counterpart.
11255 11255 */
11256 11256 ntme.ipNetToMediaInfo.ntm_flags = nce2ace(ncec);
11257 11257
11258 11258 ntme.ipNetToMediaPhysAddress.o_length =
11259 11259 MIN(OCTET_LENGTH, ill->ill_phys_addr_length);
11260 11260
11261 11261 if (!NCE_ISREACHABLE(ncec))
11262 11262 ntme.ipNetToMediaPhysAddress.o_length = 0;
11263 11263 else {
11264 11264 if (ncec->ncec_lladdr != NULL) {
11265 11265 bcopy(ncec->ncec_lladdr,
11266 11266 ntme.ipNetToMediaPhysAddress.o_bytes,
11267 11267 ntme.ipNetToMediaPhysAddress.o_length);
11268 11268 }
11269 11269 }
11270 11270
11271 11271 if (!snmp_append_data2(ird->ird_netmedia.lp_head,
11272 11272 &ird->ird_netmedia.lp_tail, (char *)&ntme, sizeof (ntme))) {
11273 11273 ip1dbg(("ip_snmp_get2_v4_media: failed to allocate %u bytes\n",
11274 11274 (uint_t)sizeof (ntme)));
11275 11275 }
11276 11276 return (0);
11277 11277 }
11278 11278
11279 11279 /*
11280 11280 * return (0) if invalid set request, 1 otherwise, including non-tcp requests
11281 11281 */
11282 11282 /* ARGSUSED */
11283 11283 int
11284 11284 ip_snmp_set(queue_t *q, int level, int name, uchar_t *ptr, int len)
11285 11285 {
11286 11286 switch (level) {
11287 11287 case MIB2_IP:
11288 11288 case MIB2_ICMP:
11289 11289 switch (name) {
11290 11290 default:
11291 11291 break;
11292 11292 }
11293 11293 return (1);
11294 11294 default:
11295 11295 return (1);
11296 11296 }
11297 11297 }
11298 11298
11299 11299 /*
11300 11300 * When there exists both a 64- and 32-bit counter of a particular type
11301 11301 * (i.e., InReceives), only the 64-bit counters are added.
11302 11302 */
11303 11303 void
11304 11304 ip_mib2_add_ip_stats(mib2_ipIfStatsEntry_t *o1, mib2_ipIfStatsEntry_t *o2)
11305 11305 {
11306 11306 UPDATE_MIB(o1, ipIfStatsInHdrErrors, o2->ipIfStatsInHdrErrors);
11307 11307 UPDATE_MIB(o1, ipIfStatsInTooBigErrors, o2->ipIfStatsInTooBigErrors);
11308 11308 UPDATE_MIB(o1, ipIfStatsInNoRoutes, o2->ipIfStatsInNoRoutes);
11309 11309 UPDATE_MIB(o1, ipIfStatsInAddrErrors, o2->ipIfStatsInAddrErrors);
11310 11310 UPDATE_MIB(o1, ipIfStatsInUnknownProtos, o2->ipIfStatsInUnknownProtos);
11311 11311 UPDATE_MIB(o1, ipIfStatsInTruncatedPkts, o2->ipIfStatsInTruncatedPkts);
11312 11312 UPDATE_MIB(o1, ipIfStatsInDiscards, o2->ipIfStatsInDiscards);
11313 11313 UPDATE_MIB(o1, ipIfStatsOutDiscards, o2->ipIfStatsOutDiscards);
11314 11314 UPDATE_MIB(o1, ipIfStatsOutFragOKs, o2->ipIfStatsOutFragOKs);
11315 11315 UPDATE_MIB(o1, ipIfStatsOutFragFails, o2->ipIfStatsOutFragFails);
11316 11316 UPDATE_MIB(o1, ipIfStatsOutFragCreates, o2->ipIfStatsOutFragCreates);
11317 11317 UPDATE_MIB(o1, ipIfStatsReasmReqds, o2->ipIfStatsReasmReqds);
11318 11318 UPDATE_MIB(o1, ipIfStatsReasmOKs, o2->ipIfStatsReasmOKs);
11319 11319 UPDATE_MIB(o1, ipIfStatsReasmFails, o2->ipIfStatsReasmFails);
11320 11320 UPDATE_MIB(o1, ipIfStatsOutNoRoutes, o2->ipIfStatsOutNoRoutes);
11321 11321 UPDATE_MIB(o1, ipIfStatsReasmDuplicates, o2->ipIfStatsReasmDuplicates);
11322 11322 UPDATE_MIB(o1, ipIfStatsReasmPartDups, o2->ipIfStatsReasmPartDups);
11323 11323 UPDATE_MIB(o1, ipIfStatsForwProhibits, o2->ipIfStatsForwProhibits);
11324 11324 UPDATE_MIB(o1, udpInCksumErrs, o2->udpInCksumErrs);
11325 11325 UPDATE_MIB(o1, udpInOverflows, o2->udpInOverflows);
11326 11326 UPDATE_MIB(o1, rawipInOverflows, o2->rawipInOverflows);
11327 11327 UPDATE_MIB(o1, ipIfStatsInWrongIPVersion,
11328 11328 o2->ipIfStatsInWrongIPVersion);
11329 11329 UPDATE_MIB(o1, ipIfStatsOutWrongIPVersion,
11330 11330 o2->ipIfStatsInWrongIPVersion);
11331 11331 UPDATE_MIB(o1, ipIfStatsOutSwitchIPVersion,
11332 11332 o2->ipIfStatsOutSwitchIPVersion);
11333 11333 UPDATE_MIB(o1, ipIfStatsHCInReceives, o2->ipIfStatsHCInReceives);
11334 11334 UPDATE_MIB(o1, ipIfStatsHCInOctets, o2->ipIfStatsHCInOctets);
11335 11335 UPDATE_MIB(o1, ipIfStatsHCInForwDatagrams,
11336 11336 o2->ipIfStatsHCInForwDatagrams);
11337 11337 UPDATE_MIB(o1, ipIfStatsHCInDelivers, o2->ipIfStatsHCInDelivers);
11338 11338 UPDATE_MIB(o1, ipIfStatsHCOutRequests, o2->ipIfStatsHCOutRequests);
11339 11339 UPDATE_MIB(o1, ipIfStatsHCOutForwDatagrams,
11340 11340 o2->ipIfStatsHCOutForwDatagrams);
11341 11341 UPDATE_MIB(o1, ipIfStatsOutFragReqds, o2->ipIfStatsOutFragReqds);
11342 11342 UPDATE_MIB(o1, ipIfStatsHCOutTransmits, o2->ipIfStatsHCOutTransmits);
11343 11343 UPDATE_MIB(o1, ipIfStatsHCOutOctets, o2->ipIfStatsHCOutOctets);
11344 11344 UPDATE_MIB(o1, ipIfStatsHCInMcastPkts, o2->ipIfStatsHCInMcastPkts);
11345 11345 UPDATE_MIB(o1, ipIfStatsHCInMcastOctets, o2->ipIfStatsHCInMcastOctets);
11346 11346 UPDATE_MIB(o1, ipIfStatsHCOutMcastPkts, o2->ipIfStatsHCOutMcastPkts);
11347 11347 UPDATE_MIB(o1, ipIfStatsHCOutMcastOctets,
11348 11348 o2->ipIfStatsHCOutMcastOctets);
11349 11349 UPDATE_MIB(o1, ipIfStatsHCInBcastPkts, o2->ipIfStatsHCInBcastPkts);
11350 11350 UPDATE_MIB(o1, ipIfStatsHCOutBcastPkts, o2->ipIfStatsHCOutBcastPkts);
11351 11351 UPDATE_MIB(o1, ipsecInSucceeded, o2->ipsecInSucceeded);
11352 11352 UPDATE_MIB(o1, ipsecInFailed, o2->ipsecInFailed);
11353 11353 UPDATE_MIB(o1, ipInCksumErrs, o2->ipInCksumErrs);
11354 11354 UPDATE_MIB(o1, tcpInErrs, o2->tcpInErrs);
11355 11355 UPDATE_MIB(o1, udpNoPorts, o2->udpNoPorts);
11356 11356 }
11357 11357
11358 11358 void
11359 11359 ip_mib2_add_icmp6_stats(mib2_ipv6IfIcmpEntry_t *o1, mib2_ipv6IfIcmpEntry_t *o2)
11360 11360 {
11361 11361 UPDATE_MIB(o1, ipv6IfIcmpInMsgs, o2->ipv6IfIcmpInMsgs);
11362 11362 UPDATE_MIB(o1, ipv6IfIcmpInErrors, o2->ipv6IfIcmpInErrors);
11363 11363 UPDATE_MIB(o1, ipv6IfIcmpInDestUnreachs, o2->ipv6IfIcmpInDestUnreachs);
11364 11364 UPDATE_MIB(o1, ipv6IfIcmpInAdminProhibs, o2->ipv6IfIcmpInAdminProhibs);
11365 11365 UPDATE_MIB(o1, ipv6IfIcmpInTimeExcds, o2->ipv6IfIcmpInTimeExcds);
11366 11366 UPDATE_MIB(o1, ipv6IfIcmpInParmProblems, o2->ipv6IfIcmpInParmProblems);
11367 11367 UPDATE_MIB(o1, ipv6IfIcmpInPktTooBigs, o2->ipv6IfIcmpInPktTooBigs);
11368 11368 UPDATE_MIB(o1, ipv6IfIcmpInEchos, o2->ipv6IfIcmpInEchos);
11369 11369 UPDATE_MIB(o1, ipv6IfIcmpInEchoReplies, o2->ipv6IfIcmpInEchoReplies);
11370 11370 UPDATE_MIB(o1, ipv6IfIcmpInRouterSolicits,
11371 11371 o2->ipv6IfIcmpInRouterSolicits);
11372 11372 UPDATE_MIB(o1, ipv6IfIcmpInRouterAdvertisements,
11373 11373 o2->ipv6IfIcmpInRouterAdvertisements);
11374 11374 UPDATE_MIB(o1, ipv6IfIcmpInNeighborSolicits,
11375 11375 o2->ipv6IfIcmpInNeighborSolicits);
11376 11376 UPDATE_MIB(o1, ipv6IfIcmpInNeighborAdvertisements,
11377 11377 o2->ipv6IfIcmpInNeighborAdvertisements);
11378 11378 UPDATE_MIB(o1, ipv6IfIcmpInRedirects, o2->ipv6IfIcmpInRedirects);
11379 11379 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembQueries,
11380 11380 o2->ipv6IfIcmpInGroupMembQueries);
11381 11381 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembResponses,
11382 11382 o2->ipv6IfIcmpInGroupMembResponses);
11383 11383 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembReductions,
11384 11384 o2->ipv6IfIcmpInGroupMembReductions);
11385 11385 UPDATE_MIB(o1, ipv6IfIcmpOutMsgs, o2->ipv6IfIcmpOutMsgs);
11386 11386 UPDATE_MIB(o1, ipv6IfIcmpOutErrors, o2->ipv6IfIcmpOutErrors);
11387 11387 UPDATE_MIB(o1, ipv6IfIcmpOutDestUnreachs,
11388 11388 o2->ipv6IfIcmpOutDestUnreachs);
11389 11389 UPDATE_MIB(o1, ipv6IfIcmpOutAdminProhibs,
11390 11390 o2->ipv6IfIcmpOutAdminProhibs);
11391 11391 UPDATE_MIB(o1, ipv6IfIcmpOutTimeExcds, o2->ipv6IfIcmpOutTimeExcds);
11392 11392 UPDATE_MIB(o1, ipv6IfIcmpOutParmProblems,
11393 11393 o2->ipv6IfIcmpOutParmProblems);
11394 11394 UPDATE_MIB(o1, ipv6IfIcmpOutPktTooBigs, o2->ipv6IfIcmpOutPktTooBigs);
11395 11395 UPDATE_MIB(o1, ipv6IfIcmpOutEchos, o2->ipv6IfIcmpOutEchos);
11396 11396 UPDATE_MIB(o1, ipv6IfIcmpOutEchoReplies, o2->ipv6IfIcmpOutEchoReplies);
11397 11397 UPDATE_MIB(o1, ipv6IfIcmpOutRouterSolicits,
11398 11398 o2->ipv6IfIcmpOutRouterSolicits);
11399 11399 UPDATE_MIB(o1, ipv6IfIcmpOutRouterAdvertisements,
11400 11400 o2->ipv6IfIcmpOutRouterAdvertisements);
11401 11401 UPDATE_MIB(o1, ipv6IfIcmpOutNeighborSolicits,
11402 11402 o2->ipv6IfIcmpOutNeighborSolicits);
11403 11403 UPDATE_MIB(o1, ipv6IfIcmpOutNeighborAdvertisements,
11404 11404 o2->ipv6IfIcmpOutNeighborAdvertisements);
11405 11405 UPDATE_MIB(o1, ipv6IfIcmpOutRedirects, o2->ipv6IfIcmpOutRedirects);
11406 11406 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembQueries,
11407 11407 o2->ipv6IfIcmpOutGroupMembQueries);
11408 11408 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembResponses,
11409 11409 o2->ipv6IfIcmpOutGroupMembResponses);
11410 11410 UPDATE_MIB(o1, ipv6IfIcmpOutGroupMembReductions,
11411 11411 o2->ipv6IfIcmpOutGroupMembReductions);
11412 11412 UPDATE_MIB(o1, ipv6IfIcmpInOverflows, o2->ipv6IfIcmpInOverflows);
11413 11413 UPDATE_MIB(o1, ipv6IfIcmpBadHoplimit, o2->ipv6IfIcmpBadHoplimit);
11414 11414 UPDATE_MIB(o1, ipv6IfIcmpInBadNeighborAdvertisements,
11415 11415 o2->ipv6IfIcmpInBadNeighborAdvertisements);
11416 11416 UPDATE_MIB(o1, ipv6IfIcmpInBadNeighborSolicitations,
11417 11417 o2->ipv6IfIcmpInBadNeighborSolicitations);
11418 11418 UPDATE_MIB(o1, ipv6IfIcmpInBadRedirects, o2->ipv6IfIcmpInBadRedirects);
11419 11419 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembTotal,
11420 11420 o2->ipv6IfIcmpInGroupMembTotal);
11421 11421 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembBadQueries,
11422 11422 o2->ipv6IfIcmpInGroupMembBadQueries);
11423 11423 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembBadReports,
11424 11424 o2->ipv6IfIcmpInGroupMembBadReports);
11425 11425 UPDATE_MIB(o1, ipv6IfIcmpInGroupMembOurReports,
11426 11426 o2->ipv6IfIcmpInGroupMembOurReports);
11427 11427 }
11428 11428
11429 11429 /*
11430 11430 * Called before the options are updated to check if this packet will
11431 11431 * be source routed from here.
11432 11432 * This routine assumes that the options are well formed i.e. that they
11433 11433 * have already been checked.
11434 11434 */
11435 11435 boolean_t
11436 11436 ip_source_routed(ipha_t *ipha, ip_stack_t *ipst)
11437 11437 {
11438 11438 ipoptp_t opts;
11439 11439 uchar_t *opt;
11440 11440 uint8_t optval;
11441 11441 uint8_t optlen;
11442 11442 ipaddr_t dst;
11443 11443
11444 11444 if (IS_SIMPLE_IPH(ipha)) {
11445 11445 ip2dbg(("not source routed\n"));
11446 11446 return (B_FALSE);
11447 11447 }
11448 11448 dst = ipha->ipha_dst;
11449 11449 for (optval = ipoptp_first(&opts, ipha);
11450 11450 optval != IPOPT_EOL;
11451 11451 optval = ipoptp_next(&opts)) {
11452 11452 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11453 11453 opt = opts.ipoptp_cur;
11454 11454 optlen = opts.ipoptp_len;
11455 11455 ip2dbg(("ip_source_routed: opt %d, len %d\n",
11456 11456 optval, optlen));
11457 11457 switch (optval) {
11458 11458 uint32_t off;
11459 11459 case IPOPT_SSRR:
11460 11460 case IPOPT_LSRR:
11461 11461 /*
11462 11462 * If dst is one of our addresses and there are some
11463 11463 * entries left in the source route return (true).
11464 11464 */
11465 11465 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
11466 11466 ip2dbg(("ip_source_routed: not next"
11467 11467 " source route 0x%x\n",
11468 11468 ntohl(dst)));
11469 11469 return (B_FALSE);
11470 11470 }
11471 11471 off = opt[IPOPT_OFFSET];
11472 11472 off--;
11473 11473 if (optlen < IP_ADDR_LEN ||
11474 11474 off > optlen - IP_ADDR_LEN) {
11475 11475 /* End of source route */
11476 11476 ip1dbg(("ip_source_routed: end of SR\n"));
11477 11477 return (B_FALSE);
11478 11478 }
11479 11479 return (B_TRUE);
11480 11480 }
11481 11481 }
11482 11482 ip2dbg(("not source routed\n"));
11483 11483 return (B_FALSE);
11484 11484 }
11485 11485
11486 11486 /*
11487 11487 * ip_unbind is called by the transports to remove a conn from
11488 11488 * the fanout table.
11489 11489 */
11490 11490 void
11491 11491 ip_unbind(conn_t *connp)
11492 11492 {
11493 11493
11494 11494 ASSERT(!MUTEX_HELD(&connp->conn_lock));
11495 11495
11496 11496 if (is_system_labeled() && connp->conn_anon_port) {
11497 11497 (void) tsol_mlp_anon(crgetzone(connp->conn_cred),
11498 11498 connp->conn_mlp_type, connp->conn_proto,
11499 11499 ntohs(connp->conn_lport), B_FALSE);
11500 11500 connp->conn_anon_port = 0;
11501 11501 }
11502 11502 connp->conn_mlp_type = mlptSingle;
11503 11503
11504 11504 ipcl_hash_remove(connp);
11505 11505 }
11506 11506
11507 11507 /*
11508 11508 * Used for deciding the MSS size for the upper layer. Thus
11509 11509 * we need to check the outbound policy values in the conn.
11510 11510 */
11511 11511 int
11512 11512 conn_ipsec_length(conn_t *connp)
11513 11513 {
11514 11514 ipsec_latch_t *ipl;
11515 11515
11516 11516 ipl = connp->conn_latch;
11517 11517 if (ipl == NULL)
11518 11518 return (0);
11519 11519
11520 11520 if (connp->conn_ixa->ixa_ipsec_policy == NULL)
11521 11521 return (0);
11522 11522
11523 11523 return (connp->conn_ixa->ixa_ipsec_policy->ipsp_act->ipa_ovhd);
11524 11524 }
11525 11525
11526 11526 /*
11527 11527 * Returns an estimate of the IPsec headers size. This is used if
11528 11528 * we don't want to call into IPsec to get the exact size.
11529 11529 */
11530 11530 int
11531 11531 ipsec_out_extra_length(ip_xmit_attr_t *ixa)
11532 11532 {
11533 11533 ipsec_action_t *a;
11534 11534
11535 11535 if (!(ixa->ixa_flags & IXAF_IPSEC_SECURE))
11536 11536 return (0);
11537 11537
11538 11538 a = ixa->ixa_ipsec_action;
11539 11539 if (a == NULL) {
11540 11540 ASSERT(ixa->ixa_ipsec_policy != NULL);
11541 11541 a = ixa->ixa_ipsec_policy->ipsp_act;
11542 11542 }
11543 11543 ASSERT(a != NULL);
11544 11544
11545 11545 return (a->ipa_ovhd);
11546 11546 }
11547 11547
11548 11548 /*
11549 11549 * If there are any source route options, return the true final
11550 11550 * destination. Otherwise, return the destination.
11551 11551 */
11552 11552 ipaddr_t
11553 11553 ip_get_dst(ipha_t *ipha)
11554 11554 {
11555 11555 ipoptp_t opts;
11556 11556 uchar_t *opt;
11557 11557 uint8_t optval;
11558 11558 uint8_t optlen;
11559 11559 ipaddr_t dst;
11560 11560 uint32_t off;
11561 11561
11562 11562 dst = ipha->ipha_dst;
11563 11563
11564 11564 if (IS_SIMPLE_IPH(ipha))
11565 11565 return (dst);
11566 11566
11567 11567 for (optval = ipoptp_first(&opts, ipha);
11568 11568 optval != IPOPT_EOL;
11569 11569 optval = ipoptp_next(&opts)) {
11570 11570 opt = opts.ipoptp_cur;
11571 11571 optlen = opts.ipoptp_len;
11572 11572 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11573 11573 switch (optval) {
11574 11574 case IPOPT_SSRR:
11575 11575 case IPOPT_LSRR:
11576 11576 off = opt[IPOPT_OFFSET];
11577 11577 /*
11578 11578 * If one of the conditions is true, it means
11579 11579 * end of options and dst already has the right
11580 11580 * value.
11581 11581 */
11582 11582 if (!(optlen < IP_ADDR_LEN || off > optlen - 3)) {
11583 11583 off = optlen - IP_ADDR_LEN;
11584 11584 bcopy(&opt[off], &dst, IP_ADDR_LEN);
11585 11585 }
11586 11586 return (dst);
11587 11587 default:
11588 11588 break;
11589 11589 }
11590 11590 }
11591 11591
11592 11592 return (dst);
11593 11593 }
11594 11594
11595 11595 /*
11596 11596 * Outbound IP fragmentation routine.
11597 11597 * Assumes the caller has checked whether or not fragmentation should
11598 11598 * be allowed. Here we copy the DF bit from the header to all the generated
11599 11599 * fragments.
11600 11600 */
11601 11601 int
11602 11602 ip_fragment_v4(mblk_t *mp_orig, nce_t *nce, iaflags_t ixaflags,
11603 11603 uint_t pkt_len, uint32_t max_frag, uint32_t xmit_hint, zoneid_t szone,
11604 11604 zoneid_t nolzid, pfirepostfrag_t postfragfn, uintptr_t *ixa_cookie)
11605 11605 {
11606 11606 int i1;
11607 11607 int hdr_len;
11608 11608 mblk_t *hdr_mp;
11609 11609 ipha_t *ipha;
11610 11610 int ip_data_end;
11611 11611 int len;
11612 11612 mblk_t *mp = mp_orig;
11613 11613 int offset;
11614 11614 ill_t *ill = nce->nce_ill;
11615 11615 ip_stack_t *ipst = ill->ill_ipst;
11616 11616 mblk_t *carve_mp;
11617 11617 uint32_t frag_flag;
11618 11618 uint_t priority = mp->b_band;
11619 11619 int error = 0;
11620 11620
11621 11621 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragReqds);
11622 11622
11623 11623 if (pkt_len != msgdsize(mp)) {
11624 11624 ip0dbg(("Packet length mismatch: %d, %ld\n",
11625 11625 pkt_len, msgdsize(mp)));
11626 11626 freemsg(mp);
11627 11627 return (EINVAL);
11628 11628 }
11629 11629
11630 11630 if (max_frag == 0) {
11631 11631 ip1dbg(("ip_fragment_v4: max_frag is zero. Dropping packet\n"));
11632 11632 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11633 11633 ip_drop_output("FragFails: zero max_frag", mp, ill);
11634 11634 freemsg(mp);
11635 11635 return (EINVAL);
11636 11636 }
11637 11637
11638 11638 ASSERT(MBLKL(mp) >= sizeof (ipha_t));
11639 11639 ipha = (ipha_t *)mp->b_rptr;
11640 11640 ASSERT(ntohs(ipha->ipha_length) == pkt_len);
11641 11641 frag_flag = ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_DF;
11642 11642
11643 11643 /*
11644 11644 * Establish the starting offset. May not be zero if we are fragging
11645 11645 * a fragment that is being forwarded.
11646 11646 */
11647 11647 offset = ntohs(ipha->ipha_fragment_offset_and_flags) & IPH_OFFSET;
11648 11648
11649 11649 /* TODO why is this test needed? */
11650 11650 if (((max_frag - ntohs(ipha->ipha_length)) & ~7) < 8) {
11651 11651 /* TODO: notify ulp somehow */
11652 11652 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11653 11653 ip_drop_output("FragFails: bad starting offset", mp, ill);
11654 11654 freemsg(mp);
11655 11655 return (EINVAL);
11656 11656 }
11657 11657
11658 11658 hdr_len = IPH_HDR_LENGTH(ipha);
11659 11659 ipha->ipha_hdr_checksum = 0;
11660 11660
11661 11661 /*
11662 11662 * Establish the number of bytes maximum per frag, after putting
11663 11663 * in the header.
11664 11664 */
11665 11665 len = (max_frag - hdr_len) & ~7;
11666 11666
11667 11667 /* Get a copy of the header for the trailing frags */
11668 11668 hdr_mp = ip_fragment_copyhdr((uchar_t *)ipha, hdr_len, offset, ipst,
11669 11669 mp);
11670 11670 if (hdr_mp == NULL) {
11671 11671 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11672 11672 ip_drop_output("FragFails: no hdr_mp", mp, ill);
11673 11673 freemsg(mp);
11674 11674 return (ENOBUFS);
11675 11675 }
11676 11676
11677 11677 /* Store the starting offset, with the MoreFrags flag. */
11678 11678 i1 = offset | IPH_MF | frag_flag;
11679 11679 ipha->ipha_fragment_offset_and_flags = htons((uint16_t)i1);
11680 11680
11681 11681 /* Establish the ending byte offset, based on the starting offset. */
11682 11682 offset <<= 3;
11683 11683 ip_data_end = offset + ntohs(ipha->ipha_length) - hdr_len;
11684 11684
11685 11685 /* Store the length of the first fragment in the IP header. */
11686 11686 i1 = len + hdr_len;
11687 11687 ASSERT(i1 <= IP_MAXPACKET);
11688 11688 ipha->ipha_length = htons((uint16_t)i1);
11689 11689
11690 11690 /*
11691 11691 * Compute the IP header checksum for the first frag. We have to
11692 11692 * watch out that we stop at the end of the header.
11693 11693 */
11694 11694 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
11695 11695
11696 11696 /*
11697 11697 * Now carve off the first frag. Note that this will include the
11698 11698 * original IP header.
11699 11699 */
11700 11700 if (!(mp = ip_carve_mp(&mp_orig, i1))) {
11701 11701 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11702 11702 ip_drop_output("FragFails: could not carve mp", mp_orig, ill);
11703 11703 freeb(hdr_mp);
11704 11704 freemsg(mp_orig);
11705 11705 return (ENOBUFS);
11706 11706 }
11707 11707
11708 11708 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragCreates);
11709 11709
11710 11710 error = postfragfn(mp, nce, ixaflags, i1, xmit_hint, szone, nolzid,
11711 11711 ixa_cookie);
11712 11712 if (error != 0 && error != EWOULDBLOCK) {
11713 11713 /* No point in sending the other fragments */
11714 11714 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11715 11715 ip_drop_output("FragFails: postfragfn failed", mp_orig, ill);
11716 11716 freeb(hdr_mp);
11717 11717 freemsg(mp_orig);
11718 11718 return (error);
11719 11719 }
11720 11720
11721 11721 /* No need to redo state machine in loop */
11722 11722 ixaflags &= ~IXAF_REACH_CONF;
11723 11723
11724 11724 /* Advance the offset to the second frag starting point. */
11725 11725 offset += len;
11726 11726 /*
11727 11727 * Update hdr_len from the copied header - there might be less options
11728 11728 * in the later fragments.
11729 11729 */
11730 11730 hdr_len = IPH_HDR_LENGTH(hdr_mp->b_rptr);
11731 11731 /* Loop until done. */
11732 11732 for (;;) {
11733 11733 uint16_t offset_and_flags;
11734 11734 uint16_t ip_len;
11735 11735
11736 11736 if (ip_data_end - offset > len) {
11737 11737 /*
11738 11738 * Carve off the appropriate amount from the original
11739 11739 * datagram.
11740 11740 */
11741 11741 if (!(carve_mp = ip_carve_mp(&mp_orig, len))) {
11742 11742 mp = NULL;
11743 11743 break;
11744 11744 }
11745 11745 /*
11746 11746 * More frags after this one. Get another copy
11747 11747 * of the header.
11748 11748 */
11749 11749 if (carve_mp->b_datap->db_ref == 1 &&
11750 11750 hdr_mp->b_wptr - hdr_mp->b_rptr <
11751 11751 carve_mp->b_rptr - carve_mp->b_datap->db_base) {
11752 11752 /* Inline IP header */
11753 11753 carve_mp->b_rptr -= hdr_mp->b_wptr -
11754 11754 hdr_mp->b_rptr;
11755 11755 bcopy(hdr_mp->b_rptr, carve_mp->b_rptr,
11756 11756 hdr_mp->b_wptr - hdr_mp->b_rptr);
11757 11757 mp = carve_mp;
11758 11758 } else {
11759 11759 if (!(mp = copyb(hdr_mp))) {
11760 11760 freemsg(carve_mp);
11761 11761 break;
11762 11762 }
11763 11763 /* Get priority marking, if any. */
11764 11764 mp->b_band = priority;
11765 11765 mp->b_cont = carve_mp;
11766 11766 }
11767 11767 ipha = (ipha_t *)mp->b_rptr;
11768 11768 offset_and_flags = IPH_MF;
11769 11769 } else {
11770 11770 /*
11771 11771 * Last frag. Consume the header. Set len to
11772 11772 * the length of this last piece.
11773 11773 */
11774 11774 len = ip_data_end - offset;
11775 11775
11776 11776 /*
11777 11777 * Carve off the appropriate amount from the original
11778 11778 * datagram.
11779 11779 */
11780 11780 if (!(carve_mp = ip_carve_mp(&mp_orig, len))) {
11781 11781 mp = NULL;
11782 11782 break;
11783 11783 }
11784 11784 if (carve_mp->b_datap->db_ref == 1 &&
11785 11785 hdr_mp->b_wptr - hdr_mp->b_rptr <
11786 11786 carve_mp->b_rptr - carve_mp->b_datap->db_base) {
11787 11787 /* Inline IP header */
11788 11788 carve_mp->b_rptr -= hdr_mp->b_wptr -
11789 11789 hdr_mp->b_rptr;
11790 11790 bcopy(hdr_mp->b_rptr, carve_mp->b_rptr,
11791 11791 hdr_mp->b_wptr - hdr_mp->b_rptr);
11792 11792 mp = carve_mp;
11793 11793 freeb(hdr_mp);
11794 11794 hdr_mp = mp;
11795 11795 } else {
11796 11796 mp = hdr_mp;
11797 11797 /* Get priority marking, if any. */
11798 11798 mp->b_band = priority;
11799 11799 mp->b_cont = carve_mp;
11800 11800 }
11801 11801 ipha = (ipha_t *)mp->b_rptr;
11802 11802 /* A frag of a frag might have IPH_MF non-zero */
11803 11803 offset_and_flags =
11804 11804 ntohs(ipha->ipha_fragment_offset_and_flags) &
11805 11805 IPH_MF;
11806 11806 }
11807 11807 offset_and_flags |= (uint16_t)(offset >> 3);
11808 11808 offset_and_flags |= (uint16_t)frag_flag;
11809 11809 /* Store the offset and flags in the IP header. */
11810 11810 ipha->ipha_fragment_offset_and_flags = htons(offset_and_flags);
11811 11811
11812 11812 /* Store the length in the IP header. */
11813 11813 ip_len = (uint16_t)(len + hdr_len);
11814 11814 ipha->ipha_length = htons(ip_len);
11815 11815
11816 11816 /*
11817 11817 * Set the IP header checksum. Note that mp is just
11818 11818 * the header, so this is easy to pass to ip_csum.
11819 11819 */
11820 11820 ipha->ipha_hdr_checksum = ip_csum_hdr(ipha);
11821 11821
11822 11822 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragCreates);
11823 11823
11824 11824 error = postfragfn(mp, nce, ixaflags, ip_len, xmit_hint, szone,
11825 11825 nolzid, ixa_cookie);
11826 11826 /* All done if we just consumed the hdr_mp. */
11827 11827 if (mp == hdr_mp) {
11828 11828 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragOKs);
11829 11829 return (error);
11830 11830 }
11831 11831 if (error != 0 && error != EWOULDBLOCK) {
11832 11832 DTRACE_PROBE2(ip__xmit__frag__fail, ill_t *, ill,
11833 11833 mblk_t *, hdr_mp);
11834 11834 /* No point in sending the other fragments */
11835 11835 break;
11836 11836 }
11837 11837
11838 11838 /* Otherwise, advance and loop. */
11839 11839 offset += len;
11840 11840 }
11841 11841 /* Clean up following allocation failure. */
11842 11842 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutFragFails);
11843 11843 ip_drop_output("FragFails: loop ended", NULL, ill);
11844 11844 if (mp != hdr_mp)
11845 11845 freeb(hdr_mp);
11846 11846 if (mp != mp_orig)
11847 11847 freemsg(mp_orig);
11848 11848 return (error);
11849 11849 }
11850 11850
11851 11851 /*
11852 11852 * Copy the header plus those options which have the copy bit set
11853 11853 */
11854 11854 static mblk_t *
11855 11855 ip_fragment_copyhdr(uchar_t *rptr, int hdr_len, int offset, ip_stack_t *ipst,
11856 11856 mblk_t *src)
11857 11857 {
11858 11858 mblk_t *mp;
11859 11859 uchar_t *up;
11860 11860
11861 11861 /*
11862 11862 * Quick check if we need to look for options without the copy bit
11863 11863 * set
11864 11864 */
11865 11865 mp = allocb_tmpl(ipst->ips_ip_wroff_extra + hdr_len, src);
11866 11866 if (!mp)
11867 11867 return (mp);
11868 11868 mp->b_rptr += ipst->ips_ip_wroff_extra;
11869 11869 if (hdr_len == IP_SIMPLE_HDR_LENGTH || offset != 0) {
11870 11870 bcopy(rptr, mp->b_rptr, hdr_len);
11871 11871 mp->b_wptr += hdr_len + ipst->ips_ip_wroff_extra;
11872 11872 return (mp);
11873 11873 }
11874 11874 up = mp->b_rptr;
11875 11875 bcopy(rptr, up, IP_SIMPLE_HDR_LENGTH);
11876 11876 up += IP_SIMPLE_HDR_LENGTH;
11877 11877 rptr += IP_SIMPLE_HDR_LENGTH;
11878 11878 hdr_len -= IP_SIMPLE_HDR_LENGTH;
11879 11879 while (hdr_len > 0) {
11880 11880 uint32_t optval;
11881 11881 uint32_t optlen;
11882 11882
11883 11883 optval = *rptr;
11884 11884 if (optval == IPOPT_EOL)
11885 11885 break;
11886 11886 if (optval == IPOPT_NOP)
11887 11887 optlen = 1;
11888 11888 else
11889 11889 optlen = rptr[1];
11890 11890 if (optval & IPOPT_COPY) {
11891 11891 bcopy(rptr, up, optlen);
11892 11892 up += optlen;
11893 11893 }
11894 11894 rptr += optlen;
11895 11895 hdr_len -= optlen;
11896 11896 }
11897 11897 /*
11898 11898 * Make sure that we drop an even number of words by filling
11899 11899 * with EOL to the next word boundary.
11900 11900 */
11901 11901 for (hdr_len = up - (mp->b_rptr + IP_SIMPLE_HDR_LENGTH);
11902 11902 hdr_len & 0x3; hdr_len++)
11903 11903 *up++ = IPOPT_EOL;
11904 11904 mp->b_wptr = up;
11905 11905 /* Update header length */
11906 11906 mp->b_rptr[0] = (uint8_t)((IP_VERSION << 4) | ((up - mp->b_rptr) >> 2));
11907 11907 return (mp);
11908 11908 }
11909 11909
11910 11910 /*
11911 11911 * Update any source route, record route, or timestamp options when
11912 11912 * sending a packet back to ourselves.
11913 11913 * Check that we are at end of strict source route.
11914 11914 * The options have been sanity checked by ip_output_options().
11915 11915 */
11916 11916 void
11917 11917 ip_output_local_options(ipha_t *ipha, ip_stack_t *ipst)
11918 11918 {
11919 11919 ipoptp_t opts;
11920 11920 uchar_t *opt;
11921 11921 uint8_t optval;
11922 11922 uint8_t optlen;
11923 11923 ipaddr_t dst;
11924 11924 uint32_t ts;
11925 11925 timestruc_t now;
11926 11926
11927 11927 for (optval = ipoptp_first(&opts, ipha);
11928 11928 optval != IPOPT_EOL;
11929 11929 optval = ipoptp_next(&opts)) {
11930 11930 opt = opts.ipoptp_cur;
11931 11931 optlen = opts.ipoptp_len;
11932 11932 ASSERT((opts.ipoptp_flags & IPOPTP_ERROR) == 0);
11933 11933 switch (optval) {
11934 11934 uint32_t off;
11935 11935 case IPOPT_SSRR:
11936 11936 case IPOPT_LSRR:
11937 11937 off = opt[IPOPT_OFFSET];
11938 11938 off--;
11939 11939 if (optlen < IP_ADDR_LEN ||
11940 11940 off > optlen - IP_ADDR_LEN) {
11941 11941 /* End of source route */
11942 11942 break;
11943 11943 }
11944 11944 /*
11945 11945 * This will only happen if two consecutive entries
11946 11946 * in the source route contains our address or if
11947 11947 * it is a packet with a loose source route which
11948 11948 * reaches us before consuming the whole source route
11949 11949 */
11950 11950
11951 11951 if (optval == IPOPT_SSRR) {
11952 11952 return;
11953 11953 }
11954 11954 /*
11955 11955 * Hack: instead of dropping the packet truncate the
11956 11956 * source route to what has been used by filling the
11957 11957 * rest with IPOPT_NOP.
11958 11958 */
11959 11959 opt[IPOPT_OLEN] = (uint8_t)off;
11960 11960 while (off < optlen) {
11961 11961 opt[off++] = IPOPT_NOP;
11962 11962 }
11963 11963 break;
11964 11964 case IPOPT_RR:
11965 11965 off = opt[IPOPT_OFFSET];
11966 11966 off--;
11967 11967 if (optlen < IP_ADDR_LEN ||
11968 11968 off > optlen - IP_ADDR_LEN) {
11969 11969 /* No more room - ignore */
11970 11970 ip1dbg((
11971 11971 "ip_output_local_options: end of RR\n"));
11972 11972 break;
11973 11973 }
11974 11974 dst = htonl(INADDR_LOOPBACK);
11975 11975 bcopy(&dst, (char *)opt + off, IP_ADDR_LEN);
11976 11976 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
11977 11977 break;
11978 11978 case IPOPT_TS:
11979 11979 /* Insert timestamp if there is romm */
11980 11980 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
11981 11981 case IPOPT_TS_TSONLY:
11982 11982 off = IPOPT_TS_TIMELEN;
11983 11983 break;
11984 11984 case IPOPT_TS_PRESPEC:
11985 11985 case IPOPT_TS_PRESPEC_RFC791:
11986 11986 /* Verify that the address matched */
11987 11987 off = opt[IPOPT_OFFSET] - 1;
11988 11988 bcopy((char *)opt + off, &dst, IP_ADDR_LEN);
11989 11989 if (ip_type_v4(dst, ipst) != IRE_LOCAL) {
11990 11990 /* Not for us */
11991 11991 break;
11992 11992 }
11993 11993 /* FALLTHRU */
11994 11994 case IPOPT_TS_TSANDADDR:
11995 11995 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
11996 11996 break;
11997 11997 default:
11998 11998 /*
11999 11999 * ip_*put_options should have already
12000 12000 * dropped this packet.
12001 12001 */
12002 12002 cmn_err(CE_PANIC, "ip_output_local_options: "
12003 12003 "unknown IT - bug in ip_output_options?\n");
12004 12004 return; /* Keep "lint" happy */
12005 12005 }
12006 12006 if (opt[IPOPT_OFFSET] - 1 + off > optlen) {
12007 12007 /* Increase overflow counter */
12008 12008 off = (opt[IPOPT_POS_OV_FLG] >> 4) + 1;
12009 12009 opt[IPOPT_POS_OV_FLG] = (uint8_t)
12010 12010 (opt[IPOPT_POS_OV_FLG] & 0x0F) |
12011 12011 (off << 4);
12012 12012 break;
12013 12013 }
12014 12014 off = opt[IPOPT_OFFSET] - 1;
12015 12015 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
12016 12016 case IPOPT_TS_PRESPEC:
12017 12017 case IPOPT_TS_PRESPEC_RFC791:
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12018 12018 case IPOPT_TS_TSANDADDR:
12019 12019 dst = htonl(INADDR_LOOPBACK);
12020 12020 bcopy(&dst, (char *)opt + off, IP_ADDR_LEN);
12021 12021 opt[IPOPT_OFFSET] += IP_ADDR_LEN;
12022 12022 /* FALLTHRU */
12023 12023 case IPOPT_TS_TSONLY:
12024 12024 off = opt[IPOPT_OFFSET] - 1;
12025 12025 /* Compute # of milliseconds since midnight */
12026 12026 gethrestime(&now);
12027 12027 ts = (now.tv_sec % (24 * 60 * 60)) * 1000 +
12028 - now.tv_nsec / (NANOSEC / MILLISEC);
12028 + NSEC2MSEC(now.tv_nsec);
12029 12029 bcopy(&ts, (char *)opt + off, IPOPT_TS_TIMELEN);
12030 12030 opt[IPOPT_OFFSET] += IPOPT_TS_TIMELEN;
12031 12031 break;
12032 12032 }
12033 12033 break;
12034 12034 }
12035 12035 }
12036 12036 }
12037 12037
12038 12038 /*
12039 12039 * Prepend an M_DATA fastpath header, and if none present prepend a
12040 12040 * DL_UNITDATA_REQ. Frees the mblk on failure.
12041 12041 *
12042 12042 * nce_dlur_mp and nce_fp_mp can not disappear once they have been set.
12043 12043 * If there is a change to them, the nce will be deleted (condemned) and
12044 12044 * a new nce_t will be created when packets are sent. Thus we need no locks
12045 12045 * to access those fields.
12046 12046 *
12047 12047 * We preserve b_band to support IPQoS. If a DL_UNITDATA_REQ is prepended
12048 12048 * we place b_band in dl_priority.dl_max.
12049 12049 */
12050 12050 static mblk_t *
12051 12051 ip_xmit_attach_llhdr(mblk_t *mp, nce_t *nce)
12052 12052 {
12053 12053 uint_t hlen;
12054 12054 mblk_t *mp1;
12055 12055 uint_t priority;
12056 12056 uchar_t *rptr;
12057 12057
12058 12058 rptr = mp->b_rptr;
12059 12059
12060 12060 ASSERT(DB_TYPE(mp) == M_DATA);
12061 12061 priority = mp->b_band;
12062 12062
12063 12063 ASSERT(nce != NULL);
12064 12064 if ((mp1 = nce->nce_fp_mp) != NULL) {
12065 12065 hlen = MBLKL(mp1);
12066 12066 /*
12067 12067 * Check if we have enough room to prepend fastpath
12068 12068 * header
12069 12069 */
12070 12070 if (hlen != 0 && (rptr - mp->b_datap->db_base) >= hlen) {
12071 12071 rptr -= hlen;
12072 12072 bcopy(mp1->b_rptr, rptr, hlen);
12073 12073 /*
12074 12074 * Set the b_rptr to the start of the link layer
12075 12075 * header
12076 12076 */
12077 12077 mp->b_rptr = rptr;
12078 12078 return (mp);
12079 12079 }
12080 12080 mp1 = copyb(mp1);
12081 12081 if (mp1 == NULL) {
12082 12082 ill_t *ill = nce->nce_ill;
12083 12083
12084 12084 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12085 12085 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12086 12086 freemsg(mp);
12087 12087 return (NULL);
12088 12088 }
12089 12089 mp1->b_band = priority;
12090 12090 mp1->b_cont = mp;
12091 12091 DB_CKSUMSTART(mp1) = DB_CKSUMSTART(mp);
12092 12092 DB_CKSUMSTUFF(mp1) = DB_CKSUMSTUFF(mp);
12093 12093 DB_CKSUMEND(mp1) = DB_CKSUMEND(mp);
12094 12094 DB_CKSUMFLAGS(mp1) = DB_CKSUMFLAGS(mp);
12095 12095 DB_LSOMSS(mp1) = DB_LSOMSS(mp);
12096 12096 DTRACE_PROBE1(ip__xmit__copyb, (mblk_t *), mp1);
12097 12097 /*
12098 12098 * XXX disable ICK_VALID and compute checksum
12099 12099 * here; can happen if nce_fp_mp changes and
12100 12100 * it can't be copied now due to insufficient
12101 12101 * space. (unlikely, fp mp can change, but it
12102 12102 * does not increase in length)
12103 12103 */
12104 12104 return (mp1);
12105 12105 }
12106 12106 mp1 = copyb(nce->nce_dlur_mp);
12107 12107
12108 12108 if (mp1 == NULL) {
12109 12109 ill_t *ill = nce->nce_ill;
12110 12110
12111 12111 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12112 12112 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12113 12113 freemsg(mp);
12114 12114 return (NULL);
12115 12115 }
12116 12116 mp1->b_cont = mp;
12117 12117 if (priority != 0) {
12118 12118 mp1->b_band = priority;
12119 12119 ((dl_unitdata_req_t *)(mp1->b_rptr))->dl_priority.dl_max =
12120 12120 priority;
12121 12121 }
12122 12122 return (mp1);
12123 12123 #undef rptr
12124 12124 }
12125 12125
12126 12126 /*
12127 12127 * Finish the outbound IPsec processing. This function is called from
12128 12128 * ipsec_out_process() if the IPsec packet was processed
12129 12129 * synchronously, or from {ah,esp}_kcf_callback_outbound() if it was processed
12130 12130 * asynchronously.
12131 12131 *
12132 12132 * This is common to IPv4 and IPv6.
12133 12133 */
12134 12134 int
12135 12135 ip_output_post_ipsec(mblk_t *mp, ip_xmit_attr_t *ixa)
12136 12136 {
12137 12137 iaflags_t ixaflags = ixa->ixa_flags;
12138 12138 uint_t pktlen;
12139 12139
12140 12140
12141 12141 /* AH/ESP don't update ixa_pktlen when they modify the packet */
12142 12142 if (ixaflags & IXAF_IS_IPV4) {
12143 12143 ipha_t *ipha = (ipha_t *)mp->b_rptr;
12144 12144
12145 12145 ASSERT(IPH_HDR_VERSION(ipha) == IPV4_VERSION);
12146 12146 pktlen = ntohs(ipha->ipha_length);
12147 12147 } else {
12148 12148 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
12149 12149
12150 12150 ASSERT(IPH_HDR_VERSION(mp->b_rptr) == IPV6_VERSION);
12151 12151 pktlen = ntohs(ip6h->ip6_plen) + IPV6_HDR_LEN;
12152 12152 }
12153 12153
12154 12154 /*
12155 12155 * We release any hard reference on the SAs here to make
12156 12156 * sure the SAs can be garbage collected. ipsr_sa has a soft reference
12157 12157 * on the SAs.
12158 12158 * If in the future we want the hard latching of the SAs in the
12159 12159 * ip_xmit_attr_t then we should remove this.
12160 12160 */
12161 12161 if (ixa->ixa_ipsec_esp_sa != NULL) {
12162 12162 IPSA_REFRELE(ixa->ixa_ipsec_esp_sa);
12163 12163 ixa->ixa_ipsec_esp_sa = NULL;
12164 12164 }
12165 12165 if (ixa->ixa_ipsec_ah_sa != NULL) {
12166 12166 IPSA_REFRELE(ixa->ixa_ipsec_ah_sa);
12167 12167 ixa->ixa_ipsec_ah_sa = NULL;
12168 12168 }
12169 12169
12170 12170 /* Do we need to fragment? */
12171 12171 if ((ixa->ixa_flags & IXAF_IPV6_ADD_FRAGHDR) ||
12172 12172 pktlen > ixa->ixa_fragsize) {
12173 12173 if (ixaflags & IXAF_IS_IPV4) {
12174 12174 ASSERT(!(ixa->ixa_flags & IXAF_IPV6_ADD_FRAGHDR));
12175 12175 /*
12176 12176 * We check for the DF case in ipsec_out_process
12177 12177 * hence this only handles the non-DF case.
12178 12178 */
12179 12179 return (ip_fragment_v4(mp, ixa->ixa_nce, ixa->ixa_flags,
12180 12180 pktlen, ixa->ixa_fragsize,
12181 12181 ixa->ixa_xmit_hint, ixa->ixa_zoneid,
12182 12182 ixa->ixa_no_loop_zoneid, ixa->ixa_postfragfn,
12183 12183 &ixa->ixa_cookie));
12184 12184 } else {
12185 12185 mp = ip_fraghdr_add_v6(mp, ixa->ixa_ident, ixa);
12186 12186 if (mp == NULL) {
12187 12187 /* MIB and ip_drop_output already done */
12188 12188 return (ENOMEM);
12189 12189 }
12190 12190 pktlen += sizeof (ip6_frag_t);
12191 12191 if (pktlen > ixa->ixa_fragsize) {
12192 12192 return (ip_fragment_v6(mp, ixa->ixa_nce,
12193 12193 ixa->ixa_flags, pktlen,
12194 12194 ixa->ixa_fragsize, ixa->ixa_xmit_hint,
12195 12195 ixa->ixa_zoneid, ixa->ixa_no_loop_zoneid,
12196 12196 ixa->ixa_postfragfn, &ixa->ixa_cookie));
12197 12197 }
12198 12198 }
12199 12199 }
12200 12200 return ((ixa->ixa_postfragfn)(mp, ixa->ixa_nce, ixa->ixa_flags,
12201 12201 pktlen, ixa->ixa_xmit_hint, ixa->ixa_zoneid,
12202 12202 ixa->ixa_no_loop_zoneid, NULL));
12203 12203 }
12204 12204
12205 12205 /*
12206 12206 * Finish the inbound IPsec processing. This function is called from
12207 12207 * ipsec_out_process() if the IPsec packet was processed
12208 12208 * synchronously, or from {ah,esp}_kcf_callback_outbound() if it was processed
12209 12209 * asynchronously.
12210 12210 *
12211 12211 * This is common to IPv4 and IPv6.
12212 12212 */
12213 12213 void
12214 12214 ip_input_post_ipsec(mblk_t *mp, ip_recv_attr_t *ira)
12215 12215 {
12216 12216 iaflags_t iraflags = ira->ira_flags;
12217 12217
12218 12218 /* Length might have changed */
12219 12219 if (iraflags & IRAF_IS_IPV4) {
12220 12220 ipha_t *ipha = (ipha_t *)mp->b_rptr;
12221 12221
12222 12222 ASSERT(IPH_HDR_VERSION(ipha) == IPV4_VERSION);
12223 12223 ira->ira_pktlen = ntohs(ipha->ipha_length);
12224 12224 ira->ira_ip_hdr_length = IPH_HDR_LENGTH(ipha);
12225 12225 ira->ira_protocol = ipha->ipha_protocol;
12226 12226
12227 12227 ip_fanout_v4(mp, ipha, ira);
12228 12228 } else {
12229 12229 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
12230 12230 uint8_t *nexthdrp;
12231 12231
12232 12232 ASSERT(IPH_HDR_VERSION(mp->b_rptr) == IPV6_VERSION);
12233 12233 ira->ira_pktlen = ntohs(ip6h->ip6_plen) + IPV6_HDR_LEN;
12234 12234 if (!ip_hdr_length_nexthdr_v6(mp, ip6h, &ira->ira_ip_hdr_length,
12235 12235 &nexthdrp)) {
12236 12236 /* Malformed packet */
12237 12237 BUMP_MIB(ira->ira_ill->ill_ip_mib, ipIfStatsInDiscards);
12238 12238 ip_drop_input("ipIfStatsInDiscards", mp, ira->ira_ill);
12239 12239 freemsg(mp);
12240 12240 return;
12241 12241 }
12242 12242 ira->ira_protocol = *nexthdrp;
12243 12243 ip_fanout_v6(mp, ip6h, ira);
12244 12244 }
12245 12245 }
12246 12246
12247 12247 /*
12248 12248 * Select which AH & ESP SA's to use (if any) for the outbound packet.
12249 12249 *
12250 12250 * If this function returns B_TRUE, the requested SA's have been filled
12251 12251 * into the ixa_ipsec_*_sa pointers.
12252 12252 *
12253 12253 * If the function returns B_FALSE, the packet has been "consumed", most
12254 12254 * likely by an ACQUIRE sent up via PF_KEY to a key management daemon.
12255 12255 *
12256 12256 * The SA references created by the protocol-specific "select"
12257 12257 * function will be released in ip_output_post_ipsec.
12258 12258 */
12259 12259 static boolean_t
12260 12260 ipsec_out_select_sa(mblk_t *mp, ip_xmit_attr_t *ixa)
12261 12261 {
12262 12262 boolean_t need_ah_acquire = B_FALSE, need_esp_acquire = B_FALSE;
12263 12263 ipsec_policy_t *pp;
12264 12264 ipsec_action_t *ap;
12265 12265
12266 12266 ASSERT(ixa->ixa_flags & IXAF_IPSEC_SECURE);
12267 12267 ASSERT((ixa->ixa_ipsec_policy != NULL) ||
12268 12268 (ixa->ixa_ipsec_action != NULL));
12269 12269
12270 12270 ap = ixa->ixa_ipsec_action;
12271 12271 if (ap == NULL) {
12272 12272 pp = ixa->ixa_ipsec_policy;
12273 12273 ASSERT(pp != NULL);
12274 12274 ap = pp->ipsp_act;
12275 12275 ASSERT(ap != NULL);
12276 12276 }
12277 12277
12278 12278 /*
12279 12279 * We have an action. now, let's select SA's.
12280 12280 * A side effect of setting ixa_ipsec_*_sa is that it will
12281 12281 * be cached in the conn_t.
12282 12282 */
12283 12283 if (ap->ipa_want_esp) {
12284 12284 if (ixa->ixa_ipsec_esp_sa == NULL) {
12285 12285 need_esp_acquire = !ipsec_outbound_sa(mp, ixa,
12286 12286 IPPROTO_ESP);
12287 12287 }
12288 12288 ASSERT(need_esp_acquire || ixa->ixa_ipsec_esp_sa != NULL);
12289 12289 }
12290 12290
12291 12291 if (ap->ipa_want_ah) {
12292 12292 if (ixa->ixa_ipsec_ah_sa == NULL) {
12293 12293 need_ah_acquire = !ipsec_outbound_sa(mp, ixa,
12294 12294 IPPROTO_AH);
12295 12295 }
12296 12296 ASSERT(need_ah_acquire || ixa->ixa_ipsec_ah_sa != NULL);
12297 12297 /*
12298 12298 * The ESP and AH processing order needs to be preserved
12299 12299 * when both protocols are required (ESP should be applied
12300 12300 * before AH for an outbound packet). Force an ESP ACQUIRE
12301 12301 * when both ESP and AH are required, and an AH ACQUIRE
12302 12302 * is needed.
12303 12303 */
12304 12304 if (ap->ipa_want_esp && need_ah_acquire)
12305 12305 need_esp_acquire = B_TRUE;
12306 12306 }
12307 12307
12308 12308 /*
12309 12309 * Send an ACQUIRE (extended, regular, or both) if we need one.
12310 12310 * Release SAs that got referenced, but will not be used until we
12311 12311 * acquire _all_ of the SAs we need.
12312 12312 */
12313 12313 if (need_ah_acquire || need_esp_acquire) {
12314 12314 if (ixa->ixa_ipsec_ah_sa != NULL) {
12315 12315 IPSA_REFRELE(ixa->ixa_ipsec_ah_sa);
12316 12316 ixa->ixa_ipsec_ah_sa = NULL;
12317 12317 }
12318 12318 if (ixa->ixa_ipsec_esp_sa != NULL) {
12319 12319 IPSA_REFRELE(ixa->ixa_ipsec_esp_sa);
12320 12320 ixa->ixa_ipsec_esp_sa = NULL;
12321 12321 }
12322 12322
12323 12323 sadb_acquire(mp, ixa, need_ah_acquire, need_esp_acquire);
12324 12324 return (B_FALSE);
12325 12325 }
12326 12326
12327 12327 return (B_TRUE);
12328 12328 }
12329 12329
12330 12330 /*
12331 12331 * Handle IPsec output processing.
12332 12332 * This function is only entered once for a given packet.
12333 12333 * We try to do things synchronously, but if we need to have user-level
12334 12334 * set up SAs, or ESP or AH uses asynchronous kEF, then the operation
12335 12335 * will be completed
12336 12336 * - when the SAs are added in esp_add_sa_finish/ah_add_sa_finish
12337 12337 * - when asynchronous ESP is done it will do AH
12338 12338 *
12339 12339 * In all cases we come back in ip_output_post_ipsec() to fragment and
12340 12340 * send out the packet.
12341 12341 */
12342 12342 int
12343 12343 ipsec_out_process(mblk_t *mp, ip_xmit_attr_t *ixa)
12344 12344 {
12345 12345 ill_t *ill = ixa->ixa_nce->nce_ill;
12346 12346 ip_stack_t *ipst = ixa->ixa_ipst;
12347 12347 ipsec_stack_t *ipss;
12348 12348 ipsec_policy_t *pp;
12349 12349 ipsec_action_t *ap;
12350 12350
12351 12351 ASSERT(ixa->ixa_flags & IXAF_IPSEC_SECURE);
12352 12352
12353 12353 ASSERT((ixa->ixa_ipsec_policy != NULL) ||
12354 12354 (ixa->ixa_ipsec_action != NULL));
12355 12355
12356 12356 ipss = ipst->ips_netstack->netstack_ipsec;
12357 12357 if (!ipsec_loaded(ipss)) {
12358 12358 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12359 12359 ip_drop_packet(mp, B_TRUE, ill,
12360 12360 DROPPER(ipss, ipds_ip_ipsec_not_loaded),
12361 12361 &ipss->ipsec_dropper);
12362 12362 return (ENOTSUP);
12363 12363 }
12364 12364
12365 12365 ap = ixa->ixa_ipsec_action;
12366 12366 if (ap == NULL) {
12367 12367 pp = ixa->ixa_ipsec_policy;
12368 12368 ASSERT(pp != NULL);
12369 12369 ap = pp->ipsp_act;
12370 12370 ASSERT(ap != NULL);
12371 12371 }
12372 12372
12373 12373 /* Handle explicit drop action and bypass. */
12374 12374 switch (ap->ipa_act.ipa_type) {
12375 12375 case IPSEC_ACT_DISCARD:
12376 12376 case IPSEC_ACT_REJECT:
12377 12377 ip_drop_packet(mp, B_FALSE, ill,
12378 12378 DROPPER(ipss, ipds_spd_explicit), &ipss->ipsec_spd_dropper);
12379 12379 return (EHOSTUNREACH); /* IPsec policy failure */
12380 12380 case IPSEC_ACT_BYPASS:
12381 12381 return (ip_output_post_ipsec(mp, ixa));
12382 12382 }
12383 12383
12384 12384 /*
12385 12385 * The order of processing is first insert a IP header if needed.
12386 12386 * Then insert the ESP header and then the AH header.
12387 12387 */
12388 12388 if ((ixa->ixa_flags & IXAF_IS_IPV4) && ap->ipa_want_se) {
12389 12389 /*
12390 12390 * First get the outer IP header before sending
12391 12391 * it to ESP.
12392 12392 */
12393 12393 ipha_t *oipha, *iipha;
12394 12394 mblk_t *outer_mp, *inner_mp;
12395 12395
12396 12396 if ((outer_mp = allocb(sizeof (ipha_t), BPRI_HI)) == NULL) {
12397 12397 (void) mi_strlog(ill->ill_rq, 0,
12398 12398 SL_ERROR|SL_TRACE|SL_CONSOLE,
12399 12399 "ipsec_out_process: "
12400 12400 "Self-Encapsulation failed: Out of memory\n");
12401 12401 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
12402 12402 ip_drop_output("ipIfStatsOutDiscards", mp, ill);
12403 12403 freemsg(mp);
12404 12404 return (ENOBUFS);
12405 12405 }
12406 12406 inner_mp = mp;
12407 12407 ASSERT(inner_mp->b_datap->db_type == M_DATA);
12408 12408 oipha = (ipha_t *)outer_mp->b_rptr;
12409 12409 iipha = (ipha_t *)inner_mp->b_rptr;
12410 12410 *oipha = *iipha;
12411 12411 outer_mp->b_wptr += sizeof (ipha_t);
12412 12412 oipha->ipha_length = htons(ntohs(iipha->ipha_length) +
12413 12413 sizeof (ipha_t));
12414 12414 oipha->ipha_protocol = IPPROTO_ENCAP;
12415 12415 oipha->ipha_version_and_hdr_length =
12416 12416 IP_SIMPLE_HDR_VERSION;
12417 12417 oipha->ipha_hdr_checksum = 0;
12418 12418 oipha->ipha_hdr_checksum = ip_csum_hdr(oipha);
12419 12419 outer_mp->b_cont = inner_mp;
12420 12420 mp = outer_mp;
12421 12421
12422 12422 ixa->ixa_flags |= IXAF_IPSEC_TUNNEL;
12423 12423 }
12424 12424
12425 12425 /* If we need to wait for a SA then we can't return any errno */
12426 12426 if (((ap->ipa_want_ah && (ixa->ixa_ipsec_ah_sa == NULL)) ||
12427 12427 (ap->ipa_want_esp && (ixa->ixa_ipsec_esp_sa == NULL))) &&
12428 12428 !ipsec_out_select_sa(mp, ixa))
12429 12429 return (0);
12430 12430
12431 12431 /*
12432 12432 * By now, we know what SA's to use. Toss over to ESP & AH
12433 12433 * to do the heavy lifting.
12434 12434 */
12435 12435 if (ap->ipa_want_esp) {
12436 12436 ASSERT(ixa->ixa_ipsec_esp_sa != NULL);
12437 12437
12438 12438 mp = ixa->ixa_ipsec_esp_sa->ipsa_output_func(mp, ixa);
12439 12439 if (mp == NULL) {
12440 12440 /*
12441 12441 * Either it failed or is pending. In the former case
12442 12442 * ipIfStatsInDiscards was increased.
12443 12443 */
12444 12444 return (0);
12445 12445 }
12446 12446 }
12447 12447
12448 12448 if (ap->ipa_want_ah) {
12449 12449 ASSERT(ixa->ixa_ipsec_ah_sa != NULL);
12450 12450
12451 12451 mp = ixa->ixa_ipsec_ah_sa->ipsa_output_func(mp, ixa);
12452 12452 if (mp == NULL) {
12453 12453 /*
12454 12454 * Either it failed or is pending. In the former case
12455 12455 * ipIfStatsInDiscards was increased.
12456 12456 */
12457 12457 return (0);
12458 12458 }
12459 12459 }
12460 12460 /*
12461 12461 * We are done with IPsec processing. Send it over
12462 12462 * the wire.
12463 12463 */
12464 12464 return (ip_output_post_ipsec(mp, ixa));
12465 12465 }
12466 12466
12467 12467 /*
12468 12468 * ioctls that go through a down/up sequence may need to wait for the down
12469 12469 * to complete. This involves waiting for the ire and ipif refcnts to go down
12470 12470 * to zero. Subsequently the ioctl is restarted from ipif_ill_refrele_tail.
12471 12471 */
12472 12472 /* ARGSUSED */
12473 12473 void
12474 12474 ip_reprocess_ioctl(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *dummy_arg)
12475 12475 {
12476 12476 struct iocblk *iocp;
12477 12477 mblk_t *mp1;
12478 12478 ip_ioctl_cmd_t *ipip;
12479 12479 int err;
12480 12480 sin_t *sin;
12481 12481 struct lifreq *lifr;
12482 12482 struct ifreq *ifr;
12483 12483
12484 12484 iocp = (struct iocblk *)mp->b_rptr;
12485 12485 ASSERT(ipsq != NULL);
12486 12486 /* Existence of mp1 verified in ip_wput_nondata */
12487 12487 mp1 = mp->b_cont->b_cont;
12488 12488 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12489 12489 if (ipip->ipi_cmd == SIOCSLIFNAME || ipip->ipi_cmd == IF_UNITSEL) {
12490 12490 /*
12491 12491 * Special case where ipx_current_ipif is not set:
12492 12492 * ill_phyint_reinit merged the v4 and v6 into a single ipsq.
12493 12493 * We are here as were not able to complete the operation in
12494 12494 * ipif_set_values because we could not become exclusive on
12495 12495 * the new ipsq.
12496 12496 */
12497 12497 ill_t *ill = q->q_ptr;
12498 12498 ipsq_current_start(ipsq, ill->ill_ipif, ipip->ipi_cmd);
12499 12499 }
12500 12500 ASSERT(ipsq->ipsq_xop->ipx_current_ipif != NULL);
12501 12501
12502 12502 if (ipip->ipi_cmd_type == IF_CMD) {
12503 12503 /* This a old style SIOC[GS]IF* command */
12504 12504 ifr = (struct ifreq *)mp1->b_rptr;
12505 12505 sin = (sin_t *)&ifr->ifr_addr;
12506 12506 } else if (ipip->ipi_cmd_type == LIF_CMD) {
12507 12507 /* This a new style SIOC[GS]LIF* command */
12508 12508 lifr = (struct lifreq *)mp1->b_rptr;
12509 12509 sin = (sin_t *)&lifr->lifr_addr;
12510 12510 } else {
12511 12511 sin = NULL;
12512 12512 }
12513 12513
12514 12514 err = (*ipip->ipi_func_restart)(ipsq->ipsq_xop->ipx_current_ipif, sin,
12515 12515 q, mp, ipip, mp1->b_rptr);
12516 12516
12517 12517 DTRACE_PROBE4(ipif__ioctl, char *, "ip_reprocess_ioctl finish",
12518 12518 int, ipip->ipi_cmd,
12519 12519 ill_t *, ipsq->ipsq_xop->ipx_current_ipif->ipif_ill,
12520 12520 ipif_t *, ipsq->ipsq_xop->ipx_current_ipif);
12521 12521
12522 12522 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), ipsq);
12523 12523 }
12524 12524
12525 12525 /*
12526 12526 * ioctl processing
12527 12527 *
12528 12528 * ioctl processing starts with ip_sioctl_copyin_setup(), which looks up
12529 12529 * the ioctl command in the ioctl tables, determines the copyin data size
12530 12530 * from the ipi_copyin_size field, and does an mi_copyin() of that size.
12531 12531 *
12532 12532 * ioctl processing then continues when the M_IOCDATA makes its way down to
12533 12533 * ip_wput_nondata(). The ioctl is looked up again in the ioctl table, its
12534 12534 * associated 'conn' is refheld till the end of the ioctl and the general
12535 12535 * ioctl processing function ip_process_ioctl() is called to extract the
12536 12536 * arguments and process the ioctl. To simplify extraction, ioctl commands
12537 12537 * are "typed" based on the arguments they take (e.g., LIF_CMD which takes a
12538 12538 * `struct lifreq'), and a common extract function (e.g., ip_extract_lifreq())
12539 12539 * is used to extract the ioctl's arguments.
12540 12540 *
12541 12541 * ip_process_ioctl determines if the ioctl needs to be serialized, and if
12542 12542 * so goes thru the serialization primitive ipsq_try_enter. Then the
12543 12543 * appropriate function to handle the ioctl is called based on the entry in
12544 12544 * the ioctl table. ioctl completion is encapsulated in ip_ioctl_finish
12545 12545 * which also refreleases the 'conn' that was refheld at the start of the
12546 12546 * ioctl. Finally ipsq_exit is called if needed to exit the ipsq.
12547 12547 *
12548 12548 * Many exclusive ioctls go thru an internal down up sequence as part of
12549 12549 * the operation. For example an attempt to change the IP address of an
12550 12550 * ipif entails ipif_down, set address, ipif_up. Bringing down the interface
12551 12551 * does all the cleanup such as deleting all ires that use this address.
12552 12552 * Then we need to wait till all references to the interface go away.
12553 12553 */
12554 12554 void
12555 12555 ip_process_ioctl(ipsq_t *ipsq, queue_t *q, mblk_t *mp, void *arg)
12556 12556 {
12557 12557 struct iocblk *iocp = (struct iocblk *)mp->b_rptr;
12558 12558 ip_ioctl_cmd_t *ipip = arg;
12559 12559 ip_extract_func_t *extract_funcp;
12560 12560 cmd_info_t ci;
12561 12561 int err;
12562 12562 boolean_t entered_ipsq = B_FALSE;
12563 12563
12564 12564 ip3dbg(("ip_process_ioctl: ioctl %X\n", iocp->ioc_cmd));
12565 12565
12566 12566 if (ipip == NULL)
12567 12567 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12568 12568
12569 12569 /*
12570 12570 * SIOCLIFADDIF needs to go thru a special path since the
12571 12571 * ill may not exist yet. This happens in the case of lo0
12572 12572 * which is created using this ioctl.
12573 12573 */
12574 12574 if (ipip->ipi_cmd == SIOCLIFADDIF) {
12575 12575 err = ip_sioctl_addif(NULL, NULL, q, mp, NULL, NULL);
12576 12576 DTRACE_PROBE4(ipif__ioctl, char *, "ip_process_ioctl finish",
12577 12577 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12578 12578 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12579 12579 return;
12580 12580 }
12581 12581
12582 12582 ci.ci_ipif = NULL;
12583 12583 switch (ipip->ipi_cmd_type) {
12584 12584 case MISC_CMD:
12585 12585 case MSFILT_CMD:
12586 12586 /*
12587 12587 * All MISC_CMD ioctls come in here -- e.g. SIOCGLIFCONF.
12588 12588 */
12589 12589 if (ipip->ipi_cmd == IF_UNITSEL) {
12590 12590 /* ioctl comes down the ill */
12591 12591 ci.ci_ipif = ((ill_t *)q->q_ptr)->ill_ipif;
12592 12592 ipif_refhold(ci.ci_ipif);
12593 12593 }
12594 12594 err = 0;
12595 12595 ci.ci_sin = NULL;
12596 12596 ci.ci_sin6 = NULL;
12597 12597 ci.ci_lifr = NULL;
12598 12598 extract_funcp = NULL;
12599 12599 break;
12600 12600
12601 12601 case IF_CMD:
12602 12602 case LIF_CMD:
12603 12603 extract_funcp = ip_extract_lifreq;
12604 12604 break;
12605 12605
12606 12606 case ARP_CMD:
12607 12607 case XARP_CMD:
12608 12608 extract_funcp = ip_extract_arpreq;
12609 12609 break;
12610 12610
12611 12611 default:
12612 12612 ASSERT(0);
12613 12613 }
12614 12614
12615 12615 if (extract_funcp != NULL) {
12616 12616 err = (*extract_funcp)(q, mp, ipip, &ci);
12617 12617 if (err != 0) {
12618 12618 DTRACE_PROBE4(ipif__ioctl,
12619 12619 char *, "ip_process_ioctl finish err",
12620 12620 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12621 12621 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12622 12622 return;
12623 12623 }
12624 12624
12625 12625 /*
12626 12626 * All of the extraction functions return a refheld ipif.
12627 12627 */
12628 12628 ASSERT(ci.ci_ipif != NULL);
12629 12629 }
12630 12630
12631 12631 if (!(ipip->ipi_flags & IPI_WR)) {
12632 12632 /*
12633 12633 * A return value of EINPROGRESS means the ioctl is
12634 12634 * either queued and waiting for some reason or has
12635 12635 * already completed.
12636 12636 */
12637 12637 err = (*ipip->ipi_func)(ci.ci_ipif, ci.ci_sin, q, mp, ipip,
12638 12638 ci.ci_lifr);
12639 12639 if (ci.ci_ipif != NULL) {
12640 12640 DTRACE_PROBE4(ipif__ioctl,
12641 12641 char *, "ip_process_ioctl finish RD",
12642 12642 int, ipip->ipi_cmd, ill_t *, ci.ci_ipif->ipif_ill,
12643 12643 ipif_t *, ci.ci_ipif);
12644 12644 ipif_refrele(ci.ci_ipif);
12645 12645 } else {
12646 12646 DTRACE_PROBE4(ipif__ioctl,
12647 12647 char *, "ip_process_ioctl finish RD",
12648 12648 int, ipip->ipi_cmd, ill_t *, NULL, ipif_t *, NULL);
12649 12649 }
12650 12650 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), NULL);
12651 12651 return;
12652 12652 }
12653 12653
12654 12654 ASSERT(ci.ci_ipif != NULL);
12655 12655
12656 12656 /*
12657 12657 * If ipsq is non-NULL, we are already being called exclusively
12658 12658 */
12659 12659 ASSERT(ipsq == NULL || IAM_WRITER_IPSQ(ipsq));
12660 12660 if (ipsq == NULL) {
12661 12661 ipsq = ipsq_try_enter(ci.ci_ipif, NULL, q, mp, ip_process_ioctl,
12662 12662 NEW_OP, B_TRUE);
12663 12663 if (ipsq == NULL) {
12664 12664 ipif_refrele(ci.ci_ipif);
12665 12665 return;
12666 12666 }
12667 12667 entered_ipsq = B_TRUE;
12668 12668 }
12669 12669 /*
12670 12670 * Release the ipif so that ipif_down and friends that wait for
12671 12671 * references to go away are not misled about the current ipif_refcnt
12672 12672 * values. We are writer so we can access the ipif even after releasing
12673 12673 * the ipif.
12674 12674 */
12675 12675 ipif_refrele(ci.ci_ipif);
12676 12676
12677 12677 ipsq_current_start(ipsq, ci.ci_ipif, ipip->ipi_cmd);
12678 12678
12679 12679 /*
12680 12680 * A return value of EINPROGRESS means the ioctl is
12681 12681 * either queued and waiting for some reason or has
12682 12682 * already completed.
12683 12683 */
12684 12684 err = (*ipip->ipi_func)(ci.ci_ipif, ci.ci_sin, q, mp, ipip, ci.ci_lifr);
12685 12685
12686 12686 DTRACE_PROBE4(ipif__ioctl, char *, "ip_process_ioctl finish WR",
12687 12687 int, ipip->ipi_cmd,
12688 12688 ill_t *, ci.ci_ipif == NULL ? NULL : ci.ci_ipif->ipif_ill,
12689 12689 ipif_t *, ci.ci_ipif);
12690 12690 ip_ioctl_finish(q, mp, err, IPI2MODE(ipip), ipsq);
12691 12691
12692 12692 if (entered_ipsq)
12693 12693 ipsq_exit(ipsq);
12694 12694 }
12695 12695
12696 12696 /*
12697 12697 * Complete the ioctl. Typically ioctls use the mi package and need to
12698 12698 * do mi_copyout/mi_copy_done.
12699 12699 */
12700 12700 void
12701 12701 ip_ioctl_finish(queue_t *q, mblk_t *mp, int err, int mode, ipsq_t *ipsq)
12702 12702 {
12703 12703 conn_t *connp = NULL;
12704 12704
12705 12705 if (err == EINPROGRESS)
12706 12706 return;
12707 12707
12708 12708 if (CONN_Q(q)) {
12709 12709 connp = Q_TO_CONN(q);
12710 12710 ASSERT(connp->conn_ref >= 2);
12711 12711 }
12712 12712
12713 12713 switch (mode) {
12714 12714 case COPYOUT:
12715 12715 if (err == 0)
12716 12716 mi_copyout(q, mp);
12717 12717 else
12718 12718 mi_copy_done(q, mp, err);
12719 12719 break;
12720 12720
12721 12721 case NO_COPYOUT:
12722 12722 mi_copy_done(q, mp, err);
12723 12723 break;
12724 12724
12725 12725 default:
12726 12726 ASSERT(mode == CONN_CLOSE); /* aborted through CONN_CLOSE */
12727 12727 break;
12728 12728 }
12729 12729
12730 12730 /*
12731 12731 * The conn refhold and ioctlref placed on the conn at the start of the
12732 12732 * ioctl are released here.
12733 12733 */
12734 12734 if (connp != NULL) {
12735 12735 CONN_DEC_IOCTLREF(connp);
12736 12736 CONN_OPER_PENDING_DONE(connp);
12737 12737 }
12738 12738
12739 12739 if (ipsq != NULL)
12740 12740 ipsq_current_finish(ipsq);
12741 12741 }
12742 12742
12743 12743 /* Handles all non data messages */
12744 12744 void
12745 12745 ip_wput_nondata(queue_t *q, mblk_t *mp)
12746 12746 {
12747 12747 mblk_t *mp1;
12748 12748 struct iocblk *iocp;
12749 12749 ip_ioctl_cmd_t *ipip;
12750 12750 conn_t *connp;
12751 12751 cred_t *cr;
12752 12752 char *proto_str;
12753 12753
12754 12754 if (CONN_Q(q))
12755 12755 connp = Q_TO_CONN(q);
12756 12756 else
12757 12757 connp = NULL;
12758 12758
12759 12759 switch (DB_TYPE(mp)) {
12760 12760 case M_IOCTL:
12761 12761 /*
12762 12762 * IOCTL processing begins in ip_sioctl_copyin_setup which
12763 12763 * will arrange to copy in associated control structures.
12764 12764 */
12765 12765 ip_sioctl_copyin_setup(q, mp);
12766 12766 return;
12767 12767 case M_IOCDATA:
12768 12768 /*
12769 12769 * Ensure that this is associated with one of our trans-
12770 12770 * parent ioctls. If it's not ours, discard it if we're
12771 12771 * running as a driver, or pass it on if we're a module.
12772 12772 */
12773 12773 iocp = (struct iocblk *)mp->b_rptr;
12774 12774 ipip = ip_sioctl_lookup(iocp->ioc_cmd);
12775 12775 if (ipip == NULL) {
12776 12776 if (q->q_next == NULL) {
12777 12777 goto nak;
12778 12778 } else {
12779 12779 putnext(q, mp);
12780 12780 }
12781 12781 return;
12782 12782 }
12783 12783 if ((q->q_next != NULL) && !(ipip->ipi_flags & IPI_MODOK)) {
12784 12784 /*
12785 12785 * The ioctl is one we recognise, but is not consumed
12786 12786 * by IP as a module and we are a module, so we drop
12787 12787 */
12788 12788 goto nak;
12789 12789 }
12790 12790
12791 12791 /* IOCTL continuation following copyin or copyout. */
12792 12792 if (mi_copy_state(q, mp, NULL) == -1) {
12793 12793 /*
12794 12794 * The copy operation failed. mi_copy_state already
12795 12795 * cleaned up, so we're out of here.
12796 12796 */
12797 12797 return;
12798 12798 }
12799 12799 /*
12800 12800 * If we just completed a copy in, we become writer and
12801 12801 * continue processing in ip_sioctl_copyin_done. If it
12802 12802 * was a copy out, we call mi_copyout again. If there is
12803 12803 * nothing more to copy out, it will complete the IOCTL.
12804 12804 */
12805 12805 if (MI_COPY_DIRECTION(mp) == MI_COPY_IN) {
12806 12806 if (!(mp1 = mp->b_cont) || !(mp1 = mp1->b_cont)) {
12807 12807 mi_copy_done(q, mp, EPROTO);
12808 12808 return;
12809 12809 }
12810 12810 /*
12811 12811 * Check for cases that need more copying. A return
12812 12812 * value of 0 means a second copyin has been started,
12813 12813 * so we return; a return value of 1 means no more
12814 12814 * copying is needed, so we continue.
12815 12815 */
12816 12816 if (ipip->ipi_cmd_type == MSFILT_CMD &&
12817 12817 MI_COPY_COUNT(mp) == 1) {
12818 12818 if (ip_copyin_msfilter(q, mp) == 0)
12819 12819 return;
12820 12820 }
12821 12821 /*
12822 12822 * Refhold the conn, till the ioctl completes. This is
12823 12823 * needed in case the ioctl ends up in the pending mp
12824 12824 * list. Every mp in the ipx_pending_mp list must have
12825 12825 * a refhold on the conn to resume processing. The
12826 12826 * refhold is released when the ioctl completes
12827 12827 * (whether normally or abnormally). An ioctlref is also
12828 12828 * placed on the conn to prevent TCP from removing the
12829 12829 * queue needed to send the ioctl reply back.
12830 12830 * In all cases ip_ioctl_finish is called to finish
12831 12831 * the ioctl and release the refholds.
12832 12832 */
12833 12833 if (connp != NULL) {
12834 12834 /* This is not a reentry */
12835 12835 CONN_INC_REF(connp);
12836 12836 CONN_INC_IOCTLREF(connp);
12837 12837 } else {
12838 12838 if (!(ipip->ipi_flags & IPI_MODOK)) {
12839 12839 mi_copy_done(q, mp, EINVAL);
12840 12840 return;
12841 12841 }
12842 12842 }
12843 12843
12844 12844 ip_process_ioctl(NULL, q, mp, ipip);
12845 12845
12846 12846 } else {
12847 12847 mi_copyout(q, mp);
12848 12848 }
12849 12849 return;
12850 12850
12851 12851 case M_IOCNAK:
12852 12852 /*
12853 12853 * The only way we could get here is if a resolver didn't like
12854 12854 * an IOCTL we sent it. This shouldn't happen.
12855 12855 */
12856 12856 (void) mi_strlog(q, 1, SL_ERROR|SL_TRACE,
12857 12857 "ip_wput_nondata: unexpected M_IOCNAK, ioc_cmd 0x%x",
12858 12858 ((struct iocblk *)mp->b_rptr)->ioc_cmd);
12859 12859 freemsg(mp);
12860 12860 return;
12861 12861 case M_IOCACK:
12862 12862 /* /dev/ip shouldn't see this */
12863 12863 goto nak;
12864 12864 case M_FLUSH:
12865 12865 if (*mp->b_rptr & FLUSHW)
12866 12866 flushq(q, FLUSHALL);
12867 12867 if (q->q_next) {
12868 12868 putnext(q, mp);
12869 12869 return;
12870 12870 }
12871 12871 if (*mp->b_rptr & FLUSHR) {
12872 12872 *mp->b_rptr &= ~FLUSHW;
12873 12873 qreply(q, mp);
12874 12874 return;
12875 12875 }
12876 12876 freemsg(mp);
12877 12877 return;
12878 12878 case M_CTL:
12879 12879 break;
12880 12880 case M_PROTO:
12881 12881 case M_PCPROTO:
12882 12882 /*
12883 12883 * The only PROTO messages we expect are SNMP-related.
12884 12884 */
12885 12885 switch (((union T_primitives *)mp->b_rptr)->type) {
12886 12886 case T_SVR4_OPTMGMT_REQ:
12887 12887 ip2dbg(("ip_wput_nondata: T_SVR4_OPTMGMT_REQ "
12888 12888 "flags %x\n",
12889 12889 ((struct T_optmgmt_req *)mp->b_rptr)->MGMT_flags));
12890 12890
12891 12891 if (connp == NULL) {
12892 12892 proto_str = "T_SVR4_OPTMGMT_REQ";
12893 12893 goto protonak;
12894 12894 }
12895 12895
12896 12896 /*
12897 12897 * All Solaris components should pass a db_credp
12898 12898 * for this TPI message, hence we ASSERT.
12899 12899 * But in case there is some other M_PROTO that looks
12900 12900 * like a TPI message sent by some other kernel
12901 12901 * component, we check and return an error.
12902 12902 */
12903 12903 cr = msg_getcred(mp, NULL);
12904 12904 ASSERT(cr != NULL);
12905 12905 if (cr == NULL) {
12906 12906 mp = mi_tpi_err_ack_alloc(mp, TSYSERR, EINVAL);
12907 12907 if (mp != NULL)
12908 12908 qreply(q, mp);
12909 12909 return;
12910 12910 }
12911 12911
12912 12912 if (!snmpcom_req(q, mp, ip_snmp_set, ip_snmp_get, cr)) {
12913 12913 proto_str = "Bad SNMPCOM request?";
12914 12914 goto protonak;
12915 12915 }
12916 12916 return;
12917 12917 default:
12918 12918 ip1dbg(("ip_wput_nondata: dropping M_PROTO prim %u\n",
12919 12919 (int)*(uint_t *)mp->b_rptr));
12920 12920 freemsg(mp);
12921 12921 return;
12922 12922 }
12923 12923 default:
12924 12924 break;
12925 12925 }
12926 12926 if (q->q_next) {
12927 12927 putnext(q, mp);
12928 12928 } else
12929 12929 freemsg(mp);
12930 12930 return;
12931 12931
12932 12932 nak:
12933 12933 iocp->ioc_error = EINVAL;
12934 12934 mp->b_datap->db_type = M_IOCNAK;
12935 12935 iocp->ioc_count = 0;
12936 12936 qreply(q, mp);
12937 12937 return;
12938 12938
12939 12939 protonak:
12940 12940 cmn_err(CE_NOTE, "IP doesn't process %s as a module", proto_str);
12941 12941 if ((mp = mi_tpi_err_ack_alloc(mp, TPROTO, EINVAL)) != NULL)
12942 12942 qreply(q, mp);
12943 12943 }
12944 12944
12945 12945 /*
12946 12946 * Process IP options in an outbound packet. Verify that the nexthop in a
12947 12947 * strict source route is onlink.
12948 12948 * Returns non-zero if something fails in which case an ICMP error has been
12949 12949 * sent and mp freed.
12950 12950 *
12951 12951 * Assumes the ULP has called ip_massage_options to move nexthop into ipha_dst.
12952 12952 */
12953 12953 int
12954 12954 ip_output_options(mblk_t *mp, ipha_t *ipha, ip_xmit_attr_t *ixa, ill_t *ill)
12955 12955 {
12956 12956 ipoptp_t opts;
12957 12957 uchar_t *opt;
12958 12958 uint8_t optval;
12959 12959 uint8_t optlen;
12960 12960 ipaddr_t dst;
12961 12961 intptr_t code = 0;
12962 12962 ire_t *ire;
12963 12963 ip_stack_t *ipst = ixa->ixa_ipst;
12964 12964 ip_recv_attr_t iras;
12965 12965
12966 12966 ip2dbg(("ip_output_options\n"));
12967 12967
12968 12968 dst = ipha->ipha_dst;
12969 12969 for (optval = ipoptp_first(&opts, ipha);
12970 12970 optval != IPOPT_EOL;
12971 12971 optval = ipoptp_next(&opts)) {
12972 12972 opt = opts.ipoptp_cur;
12973 12973 optlen = opts.ipoptp_len;
12974 12974 ip2dbg(("ip_output_options: opt %d, len %d\n",
12975 12975 optval, optlen));
12976 12976 switch (optval) {
12977 12977 uint32_t off;
12978 12978 case IPOPT_SSRR:
12979 12979 case IPOPT_LSRR:
12980 12980 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
12981 12981 ip1dbg((
12982 12982 "ip_output_options: bad option offset\n"));
12983 12983 code = (char *)&opt[IPOPT_OLEN] -
12984 12984 (char *)ipha;
12985 12985 goto param_prob;
12986 12986 }
12987 12987 off = opt[IPOPT_OFFSET];
12988 12988 ip1dbg(("ip_output_options: next hop 0x%x\n",
12989 12989 ntohl(dst)));
12990 12990 /*
12991 12991 * For strict: verify that dst is directly
12992 12992 * reachable.
12993 12993 */
12994 12994 if (optval == IPOPT_SSRR) {
12995 12995 ire = ire_ftable_lookup_v4(dst, 0, 0,
12996 12996 IRE_INTERFACE, NULL, ALL_ZONES,
12997 12997 ixa->ixa_tsl,
12998 12998 MATCH_IRE_TYPE | MATCH_IRE_SECATTR, 0, ipst,
12999 12999 NULL);
13000 13000 if (ire == NULL) {
13001 13001 ip1dbg(("ip_output_options: SSRR not"
13002 13002 " directly reachable: 0x%x\n",
13003 13003 ntohl(dst)));
13004 13004 goto bad_src_route;
13005 13005 }
13006 13006 ire_refrele(ire);
13007 13007 }
13008 13008 break;
13009 13009 case IPOPT_RR:
13010 13010 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
13011 13011 ip1dbg((
13012 13012 "ip_output_options: bad option offset\n"));
13013 13013 code = (char *)&opt[IPOPT_OLEN] -
13014 13014 (char *)ipha;
13015 13015 goto param_prob;
13016 13016 }
13017 13017 break;
13018 13018 case IPOPT_TS:
13019 13019 /*
13020 13020 * Verify that length >=5 and that there is either
13021 13021 * room for another timestamp or that the overflow
13022 13022 * counter is not maxed out.
13023 13023 */
13024 13024 code = (char *)&opt[IPOPT_OLEN] - (char *)ipha;
13025 13025 if (optlen < IPOPT_MINLEN_IT) {
13026 13026 goto param_prob;
13027 13027 }
13028 13028 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
13029 13029 ip1dbg((
13030 13030 "ip_output_options: bad option offset\n"));
13031 13031 code = (char *)&opt[IPOPT_OFFSET] -
13032 13032 (char *)ipha;
13033 13033 goto param_prob;
13034 13034 }
13035 13035 switch (opt[IPOPT_POS_OV_FLG] & 0x0F) {
13036 13036 case IPOPT_TS_TSONLY:
13037 13037 off = IPOPT_TS_TIMELEN;
13038 13038 break;
13039 13039 case IPOPT_TS_TSANDADDR:
13040 13040 case IPOPT_TS_PRESPEC:
13041 13041 case IPOPT_TS_PRESPEC_RFC791:
13042 13042 off = IP_ADDR_LEN + IPOPT_TS_TIMELEN;
13043 13043 break;
13044 13044 default:
13045 13045 code = (char *)&opt[IPOPT_POS_OV_FLG] -
13046 13046 (char *)ipha;
13047 13047 goto param_prob;
13048 13048 }
13049 13049 if (opt[IPOPT_OFFSET] - 1 + off > optlen &&
13050 13050 (opt[IPOPT_POS_OV_FLG] & 0xF0) == 0xF0) {
13051 13051 /*
13052 13052 * No room and the overflow counter is 15
13053 13053 * already.
13054 13054 */
13055 13055 goto param_prob;
13056 13056 }
13057 13057 break;
13058 13058 }
13059 13059 }
13060 13060
13061 13061 if ((opts.ipoptp_flags & IPOPTP_ERROR) == 0)
13062 13062 return (0);
13063 13063
13064 13064 ip1dbg(("ip_output_options: error processing IP options."));
13065 13065 code = (char *)&opt[IPOPT_OFFSET] - (char *)ipha;
13066 13066
13067 13067 param_prob:
13068 13068 bzero(&iras, sizeof (iras));
13069 13069 iras.ira_ill = iras.ira_rill = ill;
13070 13070 iras.ira_ruifindex = ill->ill_phyint->phyint_ifindex;
13071 13071 iras.ira_rifindex = iras.ira_ruifindex;
13072 13072 iras.ira_flags = IRAF_IS_IPV4;
13073 13073
13074 13074 ip_drop_output("ip_output_options", mp, ill);
13075 13075 icmp_param_problem(mp, (uint8_t)code, &iras);
13076 13076 ASSERT(!(iras.ira_flags & IRAF_IPSEC_SECURE));
13077 13077 return (-1);
13078 13078
13079 13079 bad_src_route:
13080 13080 bzero(&iras, sizeof (iras));
13081 13081 iras.ira_ill = iras.ira_rill = ill;
13082 13082 iras.ira_ruifindex = ill->ill_phyint->phyint_ifindex;
13083 13083 iras.ira_rifindex = iras.ira_ruifindex;
13084 13084 iras.ira_flags = IRAF_IS_IPV4;
13085 13085
13086 13086 ip_drop_input("ICMP_SOURCE_ROUTE_FAILED", mp, ill);
13087 13087 icmp_unreachable(mp, ICMP_SOURCE_ROUTE_FAILED, &iras);
13088 13088 ASSERT(!(iras.ira_flags & IRAF_IPSEC_SECURE));
13089 13089 return (-1);
13090 13090 }
13091 13091
13092 13092 /*
13093 13093 * The maximum value of conn_drain_list_cnt is CONN_MAXDRAINCNT.
13094 13094 * conn_drain_list_cnt can be changed by setting conn_drain_nthreads
13095 13095 * thru /etc/system.
13096 13096 */
13097 13097 #define CONN_MAXDRAINCNT 64
13098 13098
13099 13099 static void
13100 13100 conn_drain_init(ip_stack_t *ipst)
13101 13101 {
13102 13102 int i, j;
13103 13103 idl_tx_list_t *itl_tx;
13104 13104
13105 13105 ipst->ips_conn_drain_list_cnt = conn_drain_nthreads;
13106 13106
13107 13107 if ((ipst->ips_conn_drain_list_cnt == 0) ||
13108 13108 (ipst->ips_conn_drain_list_cnt > CONN_MAXDRAINCNT)) {
13109 13109 /*
13110 13110 * Default value of the number of drainers is the
13111 13111 * number of cpus, subject to maximum of 8 drainers.
13112 13112 */
13113 13113 if (boot_max_ncpus != -1)
13114 13114 ipst->ips_conn_drain_list_cnt = MIN(boot_max_ncpus, 8);
13115 13115 else
13116 13116 ipst->ips_conn_drain_list_cnt = MIN(max_ncpus, 8);
13117 13117 }
13118 13118
13119 13119 ipst->ips_idl_tx_list =
13120 13120 kmem_zalloc(TX_FANOUT_SIZE * sizeof (idl_tx_list_t), KM_SLEEP);
13121 13121 for (i = 0; i < TX_FANOUT_SIZE; i++) {
13122 13122 itl_tx = &ipst->ips_idl_tx_list[i];
13123 13123 itl_tx->txl_drain_list =
13124 13124 kmem_zalloc(ipst->ips_conn_drain_list_cnt *
13125 13125 sizeof (idl_t), KM_SLEEP);
13126 13126 mutex_init(&itl_tx->txl_lock, NULL, MUTEX_DEFAULT, NULL);
13127 13127 for (j = 0; j < ipst->ips_conn_drain_list_cnt; j++) {
13128 13128 mutex_init(&itl_tx->txl_drain_list[j].idl_lock, NULL,
13129 13129 MUTEX_DEFAULT, NULL);
13130 13130 itl_tx->txl_drain_list[j].idl_itl = itl_tx;
13131 13131 }
13132 13132 }
13133 13133 }
13134 13134
13135 13135 static void
13136 13136 conn_drain_fini(ip_stack_t *ipst)
13137 13137 {
13138 13138 int i;
13139 13139 idl_tx_list_t *itl_tx;
13140 13140
13141 13141 for (i = 0; i < TX_FANOUT_SIZE; i++) {
13142 13142 itl_tx = &ipst->ips_idl_tx_list[i];
13143 13143 kmem_free(itl_tx->txl_drain_list,
13144 13144 ipst->ips_conn_drain_list_cnt * sizeof (idl_t));
13145 13145 }
13146 13146 kmem_free(ipst->ips_idl_tx_list,
13147 13147 TX_FANOUT_SIZE * sizeof (idl_tx_list_t));
13148 13148 ipst->ips_idl_tx_list = NULL;
13149 13149 }
13150 13150
13151 13151 /*
13152 13152 * Flow control has blocked us from proceeding. Insert the given conn in one
13153 13153 * of the conn drain lists. When flow control is unblocked, either ip_wsrv()
13154 13154 * (STREAMS) or ill_flow_enable() (direct) will be called back, which in turn
13155 13155 * will call conn_walk_drain(). See the flow control notes at the top of this
13156 13156 * file for more details.
13157 13157 */
13158 13158 void
13159 13159 conn_drain_insert(conn_t *connp, idl_tx_list_t *tx_list)
13160 13160 {
13161 13161 idl_t *idl = tx_list->txl_drain_list;
13162 13162 uint_t index;
13163 13163 ip_stack_t *ipst = connp->conn_netstack->netstack_ip;
13164 13164
13165 13165 mutex_enter(&connp->conn_lock);
13166 13166 if (connp->conn_state_flags & CONN_CLOSING) {
13167 13167 /*
13168 13168 * The conn is closing as a result of which CONN_CLOSING
13169 13169 * is set. Return.
13170 13170 */
13171 13171 mutex_exit(&connp->conn_lock);
13172 13172 return;
13173 13173 } else if (connp->conn_idl == NULL) {
13174 13174 /*
13175 13175 * Assign the next drain list round robin. We dont' use
13176 13176 * a lock, and thus it may not be strictly round robin.
13177 13177 * Atomicity of load/stores is enough to make sure that
13178 13178 * conn_drain_list_index is always within bounds.
13179 13179 */
13180 13180 index = tx_list->txl_drain_index;
13181 13181 ASSERT(index < ipst->ips_conn_drain_list_cnt);
13182 13182 connp->conn_idl = &tx_list->txl_drain_list[index];
13183 13183 index++;
13184 13184 if (index == ipst->ips_conn_drain_list_cnt)
13185 13185 index = 0;
13186 13186 tx_list->txl_drain_index = index;
13187 13187 } else {
13188 13188 ASSERT(connp->conn_idl->idl_itl == tx_list);
13189 13189 }
13190 13190 mutex_exit(&connp->conn_lock);
13191 13191
13192 13192 idl = connp->conn_idl;
13193 13193 mutex_enter(&idl->idl_lock);
13194 13194 if ((connp->conn_drain_prev != NULL) ||
13195 13195 (connp->conn_state_flags & CONN_CLOSING)) {
13196 13196 /*
13197 13197 * The conn is either already in the drain list or closing.
13198 13198 * (We needed to check for CONN_CLOSING again since close can
13199 13199 * sneak in between dropping conn_lock and acquiring idl_lock.)
13200 13200 */
13201 13201 mutex_exit(&idl->idl_lock);
13202 13202 return;
13203 13203 }
13204 13204
13205 13205 /*
13206 13206 * The conn is not in the drain list. Insert it at the
13207 13207 * tail of the drain list. The drain list is circular
13208 13208 * and doubly linked. idl_conn points to the 1st element
13209 13209 * in the list.
13210 13210 */
13211 13211 if (idl->idl_conn == NULL) {
13212 13212 idl->idl_conn = connp;
13213 13213 connp->conn_drain_next = connp;
13214 13214 connp->conn_drain_prev = connp;
13215 13215 } else {
13216 13216 conn_t *head = idl->idl_conn;
13217 13217
13218 13218 connp->conn_drain_next = head;
13219 13219 connp->conn_drain_prev = head->conn_drain_prev;
13220 13220 head->conn_drain_prev->conn_drain_next = connp;
13221 13221 head->conn_drain_prev = connp;
13222 13222 }
13223 13223 /*
13224 13224 * For non streams based sockets assert flow control.
13225 13225 */
13226 13226 conn_setqfull(connp, NULL);
13227 13227 mutex_exit(&idl->idl_lock);
13228 13228 }
13229 13229
13230 13230 static void
13231 13231 conn_drain_remove(conn_t *connp)
13232 13232 {
13233 13233 idl_t *idl = connp->conn_idl;
13234 13234
13235 13235 if (idl != NULL) {
13236 13236 /*
13237 13237 * Remove ourself from the drain list.
13238 13238 */
13239 13239 if (connp->conn_drain_next == connp) {
13240 13240 /* Singleton in the list */
13241 13241 ASSERT(connp->conn_drain_prev == connp);
13242 13242 idl->idl_conn = NULL;
13243 13243 } else {
13244 13244 connp->conn_drain_prev->conn_drain_next =
13245 13245 connp->conn_drain_next;
13246 13246 connp->conn_drain_next->conn_drain_prev =
13247 13247 connp->conn_drain_prev;
13248 13248 if (idl->idl_conn == connp)
13249 13249 idl->idl_conn = connp->conn_drain_next;
13250 13250 }
13251 13251
13252 13252 /*
13253 13253 * NOTE: because conn_idl is associated with a specific drain
13254 13254 * list which in turn is tied to the index the TX ring
13255 13255 * (txl_cookie) hashes to, and because the TX ring can change
13256 13256 * over the lifetime of the conn_t, we must clear conn_idl so
13257 13257 * a subsequent conn_drain_insert() will set conn_idl again
13258 13258 * based on the latest txl_cookie.
13259 13259 */
13260 13260 connp->conn_idl = NULL;
13261 13261 }
13262 13262 connp->conn_drain_next = NULL;
13263 13263 connp->conn_drain_prev = NULL;
13264 13264
13265 13265 conn_clrqfull(connp, NULL);
13266 13266 /*
13267 13267 * For streams based sockets open up flow control.
13268 13268 */
13269 13269 if (!IPCL_IS_NONSTR(connp))
13270 13270 enableok(connp->conn_wq);
13271 13271 }
13272 13272
13273 13273 /*
13274 13274 * This conn is closing, and we are called from ip_close. OR
13275 13275 * this conn is draining because flow-control on the ill has been relieved.
13276 13276 *
13277 13277 * We must also need to remove conn's on this idl from the list, and also
13278 13278 * inform the sockfs upcalls about the change in flow-control.
13279 13279 */
13280 13280 static void
13281 13281 conn_drain(conn_t *connp, boolean_t closing)
13282 13282 {
13283 13283 idl_t *idl;
13284 13284 conn_t *next_connp;
13285 13285
13286 13286 /*
13287 13287 * connp->conn_idl is stable at this point, and no lock is needed
13288 13288 * to check it. If we are called from ip_close, close has already
13289 13289 * set CONN_CLOSING, thus freezing the value of conn_idl, and
13290 13290 * called us only because conn_idl is non-null. If we are called thru
13291 13291 * service, conn_idl could be null, but it cannot change because
13292 13292 * service is single-threaded per queue, and there cannot be another
13293 13293 * instance of service trying to call conn_drain_insert on this conn
13294 13294 * now.
13295 13295 */
13296 13296 ASSERT(!closing || connp == NULL || connp->conn_idl != NULL);
13297 13297
13298 13298 /*
13299 13299 * If the conn doesn't exist or is not on a drain list, bail.
13300 13300 */
13301 13301 if (connp == NULL || connp->conn_idl == NULL ||
13302 13302 connp->conn_drain_prev == NULL) {
13303 13303 return;
13304 13304 }
13305 13305
13306 13306 idl = connp->conn_idl;
13307 13307 ASSERT(MUTEX_HELD(&idl->idl_lock));
13308 13308
13309 13309 if (!closing) {
13310 13310 next_connp = connp->conn_drain_next;
13311 13311 while (next_connp != connp) {
13312 13312 conn_t *delconnp = next_connp;
13313 13313
13314 13314 next_connp = next_connp->conn_drain_next;
13315 13315 conn_drain_remove(delconnp);
13316 13316 }
13317 13317 ASSERT(connp->conn_drain_next == idl->idl_conn);
13318 13318 }
13319 13319 conn_drain_remove(connp);
13320 13320 }
13321 13321
13322 13322 /*
13323 13323 * Write service routine. Shared perimeter entry point.
13324 13324 * The device queue's messages has fallen below the low water mark and STREAMS
13325 13325 * has backenabled the ill_wq. Send sockfs notification about flow-control on
13326 13326 * each waiting conn.
13327 13327 */
13328 13328 void
13329 13329 ip_wsrv(queue_t *q)
13330 13330 {
13331 13331 ill_t *ill;
13332 13332
13333 13333 ill = (ill_t *)q->q_ptr;
13334 13334 if (ill->ill_state_flags == 0) {
13335 13335 ip_stack_t *ipst = ill->ill_ipst;
13336 13336
13337 13337 /*
13338 13338 * The device flow control has opened up.
13339 13339 * Walk through conn drain lists and qenable the
13340 13340 * first conn in each list. This makes sense only
13341 13341 * if the stream is fully plumbed and setup.
13342 13342 * Hence the ill_state_flags check above.
13343 13343 */
13344 13344 ip1dbg(("ip_wsrv: walking\n"));
13345 13345 conn_walk_drain(ipst, &ipst->ips_idl_tx_list[0]);
13346 13346 enableok(ill->ill_wq);
13347 13347 }
13348 13348 }
13349 13349
13350 13350 /*
13351 13351 * Callback to disable flow control in IP.
13352 13352 *
13353 13353 * This is a mac client callback added when the DLD_CAPAB_DIRECT capability
13354 13354 * is enabled.
13355 13355 *
13356 13356 * When MAC_TX() is not able to send any more packets, dld sets its queue
13357 13357 * to QFULL and enable the STREAMS flow control. Later, when the underlying
13358 13358 * driver is able to continue to send packets, it calls mac_tx_(ring_)update()
13359 13359 * function and wakes up corresponding mac worker threads, which in turn
13360 13360 * calls this callback function, and disables flow control.
13361 13361 */
13362 13362 void
13363 13363 ill_flow_enable(void *arg, ip_mac_tx_cookie_t cookie)
13364 13364 {
13365 13365 ill_t *ill = (ill_t *)arg;
13366 13366 ip_stack_t *ipst = ill->ill_ipst;
13367 13367 idl_tx_list_t *idl_txl;
13368 13368
13369 13369 idl_txl = &ipst->ips_idl_tx_list[IDLHASHINDEX(cookie)];
13370 13370 mutex_enter(&idl_txl->txl_lock);
13371 13371 /* add code to to set a flag to indicate idl_txl is enabled */
13372 13372 conn_walk_drain(ipst, idl_txl);
13373 13373 mutex_exit(&idl_txl->txl_lock);
13374 13374 }
13375 13375
13376 13376 /*
13377 13377 * Flow control has been relieved and STREAMS has backenabled us; drain
13378 13378 * all the conn lists on `tx_list'.
13379 13379 */
13380 13380 static void
13381 13381 conn_walk_drain(ip_stack_t *ipst, idl_tx_list_t *tx_list)
13382 13382 {
13383 13383 int i;
13384 13384 idl_t *idl;
13385 13385
13386 13386 IP_STAT(ipst, ip_conn_walk_drain);
13387 13387
13388 13388 for (i = 0; i < ipst->ips_conn_drain_list_cnt; i++) {
13389 13389 idl = &tx_list->txl_drain_list[i];
13390 13390 mutex_enter(&idl->idl_lock);
13391 13391 conn_drain(idl->idl_conn, B_FALSE);
13392 13392 mutex_exit(&idl->idl_lock);
13393 13393 }
13394 13394 }
13395 13395
13396 13396 /*
13397 13397 * Determine if the ill and multicast aspects of that packets
13398 13398 * "matches" the conn.
13399 13399 */
13400 13400 boolean_t
13401 13401 conn_wantpacket(conn_t *connp, ip_recv_attr_t *ira, ipha_t *ipha)
13402 13402 {
13403 13403 ill_t *ill = ira->ira_rill;
13404 13404 zoneid_t zoneid = ira->ira_zoneid;
13405 13405 uint_t in_ifindex;
13406 13406 ipaddr_t dst, src;
13407 13407
13408 13408 dst = ipha->ipha_dst;
13409 13409 src = ipha->ipha_src;
13410 13410
13411 13411 /*
13412 13412 * conn_incoming_ifindex is set by IP_BOUND_IF which limits
13413 13413 * unicast, broadcast and multicast reception to
13414 13414 * conn_incoming_ifindex.
13415 13415 * conn_wantpacket is called for unicast, broadcast and
13416 13416 * multicast packets.
13417 13417 */
13418 13418 in_ifindex = connp->conn_incoming_ifindex;
13419 13419
13420 13420 /* mpathd can bind to the under IPMP interface, which we allow */
13421 13421 if (in_ifindex != 0 && in_ifindex != ill->ill_phyint->phyint_ifindex) {
13422 13422 if (!IS_UNDER_IPMP(ill))
13423 13423 return (B_FALSE);
13424 13424
13425 13425 if (in_ifindex != ipmp_ill_get_ipmp_ifindex(ill))
13426 13426 return (B_FALSE);
13427 13427 }
13428 13428
13429 13429 if (!IPCL_ZONE_MATCH(connp, zoneid))
13430 13430 return (B_FALSE);
13431 13431
13432 13432 if (!(ira->ira_flags & IRAF_MULTICAST))
13433 13433 return (B_TRUE);
13434 13434
13435 13435 if (connp->conn_multi_router) {
13436 13436 /* multicast packet and multicast router socket: send up */
13437 13437 return (B_TRUE);
13438 13438 }
13439 13439
13440 13440 if (ipha->ipha_protocol == IPPROTO_PIM ||
13441 13441 ipha->ipha_protocol == IPPROTO_RSVP)
13442 13442 return (B_TRUE);
13443 13443
13444 13444 return (conn_hasmembers_ill_withsrc_v4(connp, dst, src, ira->ira_ill));
13445 13445 }
13446 13446
13447 13447 void
13448 13448 conn_setqfull(conn_t *connp, boolean_t *flow_stopped)
13449 13449 {
13450 13450 if (IPCL_IS_NONSTR(connp)) {
13451 13451 (*connp->conn_upcalls->su_txq_full)
13452 13452 (connp->conn_upper_handle, B_TRUE);
13453 13453 if (flow_stopped != NULL)
13454 13454 *flow_stopped = B_TRUE;
13455 13455 } else {
13456 13456 queue_t *q = connp->conn_wq;
13457 13457
13458 13458 ASSERT(q != NULL);
13459 13459 if (!(q->q_flag & QFULL)) {
13460 13460 mutex_enter(QLOCK(q));
13461 13461 if (!(q->q_flag & QFULL)) {
13462 13462 /* still need to set QFULL */
13463 13463 q->q_flag |= QFULL;
13464 13464 /* set flow_stopped to true under QLOCK */
13465 13465 if (flow_stopped != NULL)
13466 13466 *flow_stopped = B_TRUE;
13467 13467 mutex_exit(QLOCK(q));
13468 13468 } else {
13469 13469 /* flow_stopped is left unchanged */
13470 13470 mutex_exit(QLOCK(q));
13471 13471 }
13472 13472 }
13473 13473 }
13474 13474 }
13475 13475
13476 13476 void
13477 13477 conn_clrqfull(conn_t *connp, boolean_t *flow_stopped)
13478 13478 {
13479 13479 if (IPCL_IS_NONSTR(connp)) {
13480 13480 (*connp->conn_upcalls->su_txq_full)
13481 13481 (connp->conn_upper_handle, B_FALSE);
13482 13482 if (flow_stopped != NULL)
13483 13483 *flow_stopped = B_FALSE;
13484 13484 } else {
13485 13485 queue_t *q = connp->conn_wq;
13486 13486
13487 13487 ASSERT(q != NULL);
13488 13488 if (q->q_flag & QFULL) {
13489 13489 mutex_enter(QLOCK(q));
13490 13490 if (q->q_flag & QFULL) {
13491 13491 q->q_flag &= ~QFULL;
13492 13492 /* set flow_stopped to false under QLOCK */
13493 13493 if (flow_stopped != NULL)
13494 13494 *flow_stopped = B_FALSE;
13495 13495 mutex_exit(QLOCK(q));
13496 13496 if (q->q_flag & QWANTW)
13497 13497 qbackenable(q, 0);
13498 13498 } else {
13499 13499 /* flow_stopped is left unchanged */
13500 13500 mutex_exit(QLOCK(q));
13501 13501 }
13502 13502 }
13503 13503 }
13504 13504
13505 13505 mutex_enter(&connp->conn_lock);
13506 13506 connp->conn_blocked = B_FALSE;
13507 13507 mutex_exit(&connp->conn_lock);
13508 13508 }
13509 13509
13510 13510 /*
13511 13511 * Return the length in bytes of the IPv4 headers (base header, label, and
13512 13512 * other IP options) that will be needed based on the
13513 13513 * ip_pkt_t structure passed by the caller.
13514 13514 *
13515 13515 * The returned length does not include the length of the upper level
13516 13516 * protocol (ULP) header.
13517 13517 * The caller needs to check that the length doesn't exceed the max for IPv4.
13518 13518 */
13519 13519 int
13520 13520 ip_total_hdrs_len_v4(const ip_pkt_t *ipp)
13521 13521 {
13522 13522 int len;
13523 13523
13524 13524 len = IP_SIMPLE_HDR_LENGTH;
13525 13525 if (ipp->ipp_fields & IPPF_LABEL_V4) {
13526 13526 ASSERT(ipp->ipp_label_len_v4 != 0);
13527 13527 /* We need to round up here */
13528 13528 len += (ipp->ipp_label_len_v4 + 3) & ~3;
13529 13529 }
13530 13530
13531 13531 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
13532 13532 ASSERT(ipp->ipp_ipv4_options_len != 0);
13533 13533 ASSERT((ipp->ipp_ipv4_options_len & 3) == 0);
13534 13534 len += ipp->ipp_ipv4_options_len;
13535 13535 }
13536 13536 return (len);
13537 13537 }
13538 13538
13539 13539 /*
13540 13540 * All-purpose routine to build an IPv4 header with options based
13541 13541 * on the abstract ip_pkt_t.
13542 13542 *
13543 13543 * The caller has to set the source and destination address as well as
13544 13544 * ipha_length. The caller has to massage any source route and compensate
13545 13545 * for the ULP pseudo-header checksum due to the source route.
13546 13546 */
13547 13547 void
13548 13548 ip_build_hdrs_v4(uchar_t *buf, uint_t buf_len, const ip_pkt_t *ipp,
13549 13549 uint8_t protocol)
13550 13550 {
13551 13551 ipha_t *ipha = (ipha_t *)buf;
13552 13552 uint8_t *cp;
13553 13553
13554 13554 /* Initialize IPv4 header */
13555 13555 ipha->ipha_type_of_service = ipp->ipp_type_of_service;
13556 13556 ipha->ipha_length = 0; /* Caller will set later */
13557 13557 ipha->ipha_ident = 0;
13558 13558 ipha->ipha_fragment_offset_and_flags = 0;
13559 13559 ipha->ipha_ttl = ipp->ipp_unicast_hops;
13560 13560 ipha->ipha_protocol = protocol;
13561 13561 ipha->ipha_hdr_checksum = 0;
13562 13562
13563 13563 if ((ipp->ipp_fields & IPPF_ADDR) &&
13564 13564 IN6_IS_ADDR_V4MAPPED(&ipp->ipp_addr))
13565 13565 ipha->ipha_src = ipp->ipp_addr_v4;
13566 13566
13567 13567 cp = (uint8_t *)&ipha[1];
13568 13568 if (ipp->ipp_fields & IPPF_LABEL_V4) {
13569 13569 ASSERT(ipp->ipp_label_len_v4 != 0);
13570 13570 bcopy(ipp->ipp_label_v4, cp, ipp->ipp_label_len_v4);
13571 13571 cp += ipp->ipp_label_len_v4;
13572 13572 /* We need to round up here */
13573 13573 while ((uintptr_t)cp & 0x3) {
13574 13574 *cp++ = IPOPT_NOP;
13575 13575 }
13576 13576 }
13577 13577
13578 13578 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) {
13579 13579 ASSERT(ipp->ipp_ipv4_options_len != 0);
13580 13580 ASSERT((ipp->ipp_ipv4_options_len & 3) == 0);
13581 13581 bcopy(ipp->ipp_ipv4_options, cp, ipp->ipp_ipv4_options_len);
13582 13582 cp += ipp->ipp_ipv4_options_len;
13583 13583 }
13584 13584 ipha->ipha_version_and_hdr_length =
13585 13585 (uint8_t)((IP_VERSION << 4) + buf_len / 4);
13586 13586
13587 13587 ASSERT((int)(cp - buf) == buf_len);
13588 13588 }
13589 13589
13590 13590 /* Allocate the private structure */
13591 13591 static int
13592 13592 ip_priv_alloc(void **bufp)
13593 13593 {
13594 13594 void *buf;
13595 13595
13596 13596 if ((buf = kmem_alloc(sizeof (ip_priv_t), KM_NOSLEEP)) == NULL)
13597 13597 return (ENOMEM);
13598 13598
13599 13599 *bufp = buf;
13600 13600 return (0);
13601 13601 }
13602 13602
13603 13603 /* Function to delete the private structure */
13604 13604 void
13605 13605 ip_priv_free(void *buf)
13606 13606 {
13607 13607 ASSERT(buf != NULL);
13608 13608 kmem_free(buf, sizeof (ip_priv_t));
13609 13609 }
13610 13610
13611 13611 /*
13612 13612 * The entry point for IPPF processing.
13613 13613 * If the classifier (IPGPC_CLASSIFY) is not loaded and configured, the
13614 13614 * routine just returns.
13615 13615 *
13616 13616 * When called, ip_process generates an ipp_packet_t structure
13617 13617 * which holds the state information for this packet and invokes the
13618 13618 * the classifier (via ipp_packet_process). The classification, depending on
13619 13619 * configured filters, results in a list of actions for this packet. Invoking
13620 13620 * an action may cause the packet to be dropped, in which case we return NULL.
13621 13621 * proc indicates the callout position for
13622 13622 * this packet and ill is the interface this packet arrived on or will leave
13623 13623 * on (inbound and outbound resp.).
13624 13624 *
13625 13625 * We do the processing on the rill (mapped to the upper if ipmp), but MIB
13626 13626 * on the ill corrsponding to the destination IP address.
13627 13627 */
13628 13628 mblk_t *
13629 13629 ip_process(ip_proc_t proc, mblk_t *mp, ill_t *rill, ill_t *ill)
13630 13630 {
13631 13631 ip_priv_t *priv;
13632 13632 ipp_action_id_t aid;
13633 13633 int rc = 0;
13634 13634 ipp_packet_t *pp;
13635 13635
13636 13636 /* If the classifier is not loaded, return */
13637 13637 if ((aid = ipp_action_lookup(IPGPC_CLASSIFY)) == IPP_ACTION_INVAL) {
13638 13638 return (mp);
13639 13639 }
13640 13640
13641 13641 ASSERT(mp != NULL);
13642 13642
13643 13643 /* Allocate the packet structure */
13644 13644 rc = ipp_packet_alloc(&pp, "ip", aid);
13645 13645 if (rc != 0)
13646 13646 goto drop;
13647 13647
13648 13648 /* Allocate the private structure */
13649 13649 rc = ip_priv_alloc((void **)&priv);
13650 13650 if (rc != 0) {
13651 13651 ipp_packet_free(pp);
13652 13652 goto drop;
13653 13653 }
13654 13654 priv->proc = proc;
13655 13655 priv->ill_index = ill_get_upper_ifindex(rill);
13656 13656
13657 13657 ipp_packet_set_private(pp, priv, ip_priv_free);
13658 13658 ipp_packet_set_data(pp, mp);
13659 13659
13660 13660 /* Invoke the classifier */
13661 13661 rc = ipp_packet_process(&pp);
13662 13662 if (pp != NULL) {
13663 13663 mp = ipp_packet_get_data(pp);
13664 13664 ipp_packet_free(pp);
13665 13665 if (rc != 0)
13666 13666 goto drop;
13667 13667 return (mp);
13668 13668 } else {
13669 13669 /* No mp to trace in ip_drop_input/ip_drop_output */
13670 13670 mp = NULL;
13671 13671 }
13672 13672 drop:
13673 13673 if (proc == IPP_LOCAL_IN || proc == IPP_FWD_IN) {
13674 13674 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
13675 13675 ip_drop_input("ip_process", mp, ill);
13676 13676 } else {
13677 13677 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
13678 13678 ip_drop_output("ip_process", mp, ill);
13679 13679 }
13680 13680 freemsg(mp);
13681 13681 return (NULL);
13682 13682 }
13683 13683
13684 13684 /*
13685 13685 * Propagate a multicast group membership operation (add/drop) on
13686 13686 * all the interfaces crossed by the related multirt routes.
13687 13687 * The call is considered successful if the operation succeeds
13688 13688 * on at least one interface.
13689 13689 *
13690 13690 * This assumes that a set of IRE_HOST/RTF_MULTIRT has been created for the
13691 13691 * multicast addresses with the ire argument being the first one.
13692 13692 * We walk the bucket to find all the of those.
13693 13693 *
13694 13694 * Common to IPv4 and IPv6.
13695 13695 */
13696 13696 static int
13697 13697 ip_multirt_apply_membership(int (*fn)(conn_t *, boolean_t,
13698 13698 const in6_addr_t *, ipaddr_t, uint_t, mcast_record_t, const in6_addr_t *),
13699 13699 ire_t *ire, conn_t *connp, boolean_t checkonly, const in6_addr_t *v6group,
13700 13700 mcast_record_t fmode, const in6_addr_t *v6src)
13701 13701 {
13702 13702 ire_t *ire_gw;
13703 13703 irb_t *irb;
13704 13704 int ifindex;
13705 13705 int error = 0;
13706 13706 int result;
13707 13707 ip_stack_t *ipst = ire->ire_ipst;
13708 13708 ipaddr_t group;
13709 13709 boolean_t isv6;
13710 13710 int match_flags;
13711 13711
13712 13712 if (IN6_IS_ADDR_V4MAPPED(v6group)) {
13713 13713 IN6_V4MAPPED_TO_IPADDR(v6group, group);
13714 13714 isv6 = B_FALSE;
13715 13715 } else {
13716 13716 isv6 = B_TRUE;
13717 13717 }
13718 13718
13719 13719 irb = ire->ire_bucket;
13720 13720 ASSERT(irb != NULL);
13721 13721
13722 13722 result = 0;
13723 13723 irb_refhold(irb);
13724 13724 for (; ire != NULL; ire = ire->ire_next) {
13725 13725 if ((ire->ire_flags & RTF_MULTIRT) == 0)
13726 13726 continue;
13727 13727
13728 13728 /* We handle -ifp routes by matching on the ill if set */
13729 13729 match_flags = MATCH_IRE_TYPE;
13730 13730 if (ire->ire_ill != NULL)
13731 13731 match_flags |= MATCH_IRE_ILL;
13732 13732
13733 13733 if (isv6) {
13734 13734 if (!IN6_ARE_ADDR_EQUAL(&ire->ire_addr_v6, v6group))
13735 13735 continue;
13736 13736
13737 13737 ire_gw = ire_ftable_lookup_v6(&ire->ire_gateway_addr_v6,
13738 13738 0, 0, IRE_INTERFACE, ire->ire_ill, ALL_ZONES, NULL,
13739 13739 match_flags, 0, ipst, NULL);
13740 13740 } else {
13741 13741 if (ire->ire_addr != group)
13742 13742 continue;
13743 13743
13744 13744 ire_gw = ire_ftable_lookup_v4(ire->ire_gateway_addr,
13745 13745 0, 0, IRE_INTERFACE, ire->ire_ill, ALL_ZONES, NULL,
13746 13746 match_flags, 0, ipst, NULL);
13747 13747 }
13748 13748 /* No interface route exists for the gateway; skip this ire. */
13749 13749 if (ire_gw == NULL)
13750 13750 continue;
13751 13751 if (ire_gw->ire_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
13752 13752 ire_refrele(ire_gw);
13753 13753 continue;
13754 13754 }
13755 13755 ASSERT(ire_gw->ire_ill != NULL); /* IRE_INTERFACE */
13756 13756 ifindex = ire_gw->ire_ill->ill_phyint->phyint_ifindex;
13757 13757
13758 13758 /*
13759 13759 * The operation is considered a success if
13760 13760 * it succeeds at least once on any one interface.
13761 13761 */
13762 13762 error = fn(connp, checkonly, v6group, INADDR_ANY, ifindex,
13763 13763 fmode, v6src);
13764 13764 if (error == 0)
13765 13765 result = CGTP_MCAST_SUCCESS;
13766 13766
13767 13767 ire_refrele(ire_gw);
13768 13768 }
13769 13769 irb_refrele(irb);
13770 13770 /*
13771 13771 * Consider the call as successful if we succeeded on at least
13772 13772 * one interface. Otherwise, return the last encountered error.
13773 13773 */
13774 13774 return (result == CGTP_MCAST_SUCCESS ? 0 : error);
13775 13775 }
13776 13776
13777 13777 /*
13778 13778 * Return the expected CGTP hooks version number.
13779 13779 */
13780 13780 int
13781 13781 ip_cgtp_filter_supported(void)
13782 13782 {
13783 13783 return (ip_cgtp_filter_rev);
13784 13784 }
13785 13785
13786 13786 /*
13787 13787 * CGTP hooks can be registered by invoking this function.
13788 13788 * Checks that the version number matches.
13789 13789 */
13790 13790 int
13791 13791 ip_cgtp_filter_register(netstackid_t stackid, cgtp_filter_ops_t *ops)
13792 13792 {
13793 13793 netstack_t *ns;
13794 13794 ip_stack_t *ipst;
13795 13795
13796 13796 if (ops->cfo_filter_rev != CGTP_FILTER_REV)
13797 13797 return (ENOTSUP);
13798 13798
13799 13799 ns = netstack_find_by_stackid(stackid);
13800 13800 if (ns == NULL)
13801 13801 return (EINVAL);
13802 13802 ipst = ns->netstack_ip;
13803 13803 ASSERT(ipst != NULL);
13804 13804
13805 13805 if (ipst->ips_ip_cgtp_filter_ops != NULL) {
13806 13806 netstack_rele(ns);
13807 13807 return (EALREADY);
13808 13808 }
13809 13809
13810 13810 ipst->ips_ip_cgtp_filter_ops = ops;
13811 13811
13812 13812 ill_set_inputfn_all(ipst);
13813 13813
13814 13814 netstack_rele(ns);
13815 13815 return (0);
13816 13816 }
13817 13817
13818 13818 /*
13819 13819 * CGTP hooks can be unregistered by invoking this function.
13820 13820 * Returns ENXIO if there was no registration.
13821 13821 * Returns EBUSY if the ndd variable has not been turned off.
13822 13822 */
13823 13823 int
13824 13824 ip_cgtp_filter_unregister(netstackid_t stackid)
13825 13825 {
13826 13826 netstack_t *ns;
13827 13827 ip_stack_t *ipst;
13828 13828
13829 13829 ns = netstack_find_by_stackid(stackid);
13830 13830 if (ns == NULL)
13831 13831 return (EINVAL);
13832 13832 ipst = ns->netstack_ip;
13833 13833 ASSERT(ipst != NULL);
13834 13834
13835 13835 if (ipst->ips_ip_cgtp_filter) {
13836 13836 netstack_rele(ns);
13837 13837 return (EBUSY);
13838 13838 }
13839 13839
13840 13840 if (ipst->ips_ip_cgtp_filter_ops == NULL) {
13841 13841 netstack_rele(ns);
13842 13842 return (ENXIO);
13843 13843 }
13844 13844 ipst->ips_ip_cgtp_filter_ops = NULL;
13845 13845
13846 13846 ill_set_inputfn_all(ipst);
13847 13847
13848 13848 netstack_rele(ns);
13849 13849 return (0);
13850 13850 }
13851 13851
13852 13852 /*
13853 13853 * Check whether there is a CGTP filter registration.
13854 13854 * Returns non-zero if there is a registration, otherwise returns zero.
13855 13855 * Note: returns zero if bad stackid.
13856 13856 */
13857 13857 int
13858 13858 ip_cgtp_filter_is_registered(netstackid_t stackid)
13859 13859 {
13860 13860 netstack_t *ns;
13861 13861 ip_stack_t *ipst;
13862 13862 int ret;
13863 13863
13864 13864 ns = netstack_find_by_stackid(stackid);
13865 13865 if (ns == NULL)
13866 13866 return (0);
13867 13867 ipst = ns->netstack_ip;
13868 13868 ASSERT(ipst != NULL);
13869 13869
13870 13870 if (ipst->ips_ip_cgtp_filter_ops != NULL)
13871 13871 ret = 1;
13872 13872 else
13873 13873 ret = 0;
13874 13874
13875 13875 netstack_rele(ns);
13876 13876 return (ret);
13877 13877 }
13878 13878
13879 13879 static int
13880 13880 ip_squeue_switch(int val)
13881 13881 {
13882 13882 int rval;
13883 13883
13884 13884 switch (val) {
13885 13885 case IP_SQUEUE_ENTER_NODRAIN:
13886 13886 rval = SQ_NODRAIN;
13887 13887 break;
13888 13888 case IP_SQUEUE_ENTER:
13889 13889 rval = SQ_PROCESS;
13890 13890 break;
13891 13891 case IP_SQUEUE_FILL:
13892 13892 default:
13893 13893 rval = SQ_FILL;
13894 13894 break;
13895 13895 }
13896 13896 return (rval);
13897 13897 }
13898 13898
13899 13899 static void *
13900 13900 ip_kstat2_init(netstackid_t stackid, ip_stat_t *ip_statisticsp)
13901 13901 {
13902 13902 kstat_t *ksp;
13903 13903
13904 13904 ip_stat_t template = {
13905 13905 { "ip_udp_fannorm", KSTAT_DATA_UINT64 },
13906 13906 { "ip_udp_fanmb", KSTAT_DATA_UINT64 },
13907 13907 { "ip_recv_pullup", KSTAT_DATA_UINT64 },
13908 13908 { "ip_db_ref", KSTAT_DATA_UINT64 },
13909 13909 { "ip_notaligned", KSTAT_DATA_UINT64 },
13910 13910 { "ip_multimblk", KSTAT_DATA_UINT64 },
13911 13911 { "ip_opt", KSTAT_DATA_UINT64 },
13912 13912 { "ipsec_proto_ahesp", KSTAT_DATA_UINT64 },
13913 13913 { "ip_conn_flputbq", KSTAT_DATA_UINT64 },
13914 13914 { "ip_conn_walk_drain", KSTAT_DATA_UINT64 },
13915 13915 { "ip_out_sw_cksum", KSTAT_DATA_UINT64 },
13916 13916 { "ip_out_sw_cksum_bytes", KSTAT_DATA_UINT64 },
13917 13917 { "ip_in_sw_cksum", KSTAT_DATA_UINT64 },
13918 13918 { "ip_ire_reclaim_calls", KSTAT_DATA_UINT64 },
13919 13919 { "ip_ire_reclaim_deleted", KSTAT_DATA_UINT64 },
13920 13920 { "ip_nce_reclaim_calls", KSTAT_DATA_UINT64 },
13921 13921 { "ip_nce_reclaim_deleted", KSTAT_DATA_UINT64 },
13922 13922 { "ip_dce_reclaim_calls", KSTAT_DATA_UINT64 },
13923 13923 { "ip_dce_reclaim_deleted", KSTAT_DATA_UINT64 },
13924 13924 { "ip_tcp_in_full_hw_cksum_err", KSTAT_DATA_UINT64 },
13925 13925 { "ip_tcp_in_part_hw_cksum_err", KSTAT_DATA_UINT64 },
13926 13926 { "ip_tcp_in_sw_cksum_err", KSTAT_DATA_UINT64 },
13927 13927 { "ip_udp_in_full_hw_cksum_err", KSTAT_DATA_UINT64 },
13928 13928 { "ip_udp_in_part_hw_cksum_err", KSTAT_DATA_UINT64 },
13929 13929 { "ip_udp_in_sw_cksum_err", KSTAT_DATA_UINT64 },
13930 13930 { "conn_in_recvdstaddr", KSTAT_DATA_UINT64 },
13931 13931 { "conn_in_recvopts", KSTAT_DATA_UINT64 },
13932 13932 { "conn_in_recvif", KSTAT_DATA_UINT64 },
13933 13933 { "conn_in_recvslla", KSTAT_DATA_UINT64 },
13934 13934 { "conn_in_recvucred", KSTAT_DATA_UINT64 },
13935 13935 { "conn_in_recvttl", KSTAT_DATA_UINT64 },
13936 13936 { "conn_in_recvhopopts", KSTAT_DATA_UINT64 },
13937 13937 { "conn_in_recvhoplimit", KSTAT_DATA_UINT64 },
13938 13938 { "conn_in_recvdstopts", KSTAT_DATA_UINT64 },
13939 13939 { "conn_in_recvrthdrdstopts", KSTAT_DATA_UINT64 },
13940 13940 { "conn_in_recvrthdr", KSTAT_DATA_UINT64 },
13941 13941 { "conn_in_recvpktinfo", KSTAT_DATA_UINT64 },
13942 13942 { "conn_in_recvtclass", KSTAT_DATA_UINT64 },
13943 13943 { "conn_in_timestamp", KSTAT_DATA_UINT64 },
13944 13944 };
13945 13945
13946 13946 ksp = kstat_create_netstack("ip", 0, "ipstat", "net",
13947 13947 KSTAT_TYPE_NAMED, sizeof (template) / sizeof (kstat_named_t),
13948 13948 KSTAT_FLAG_VIRTUAL, stackid);
13949 13949
13950 13950 if (ksp == NULL)
13951 13951 return (NULL);
13952 13952
13953 13953 bcopy(&template, ip_statisticsp, sizeof (template));
13954 13954 ksp->ks_data = (void *)ip_statisticsp;
13955 13955 ksp->ks_private = (void *)(uintptr_t)stackid;
13956 13956
13957 13957 kstat_install(ksp);
13958 13958 return (ksp);
13959 13959 }
13960 13960
13961 13961 static void
13962 13962 ip_kstat2_fini(netstackid_t stackid, kstat_t *ksp)
13963 13963 {
13964 13964 if (ksp != NULL) {
13965 13965 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
13966 13966 kstat_delete_netstack(ksp, stackid);
13967 13967 }
13968 13968 }
13969 13969
13970 13970 static void *
13971 13971 ip_kstat_init(netstackid_t stackid, ip_stack_t *ipst)
13972 13972 {
13973 13973 kstat_t *ksp;
13974 13974
13975 13975 ip_named_kstat_t template = {
13976 13976 { "forwarding", KSTAT_DATA_UINT32, 0 },
13977 13977 { "defaultTTL", KSTAT_DATA_UINT32, 0 },
13978 13978 { "inReceives", KSTAT_DATA_UINT64, 0 },
13979 13979 { "inHdrErrors", KSTAT_DATA_UINT32, 0 },
13980 13980 { "inAddrErrors", KSTAT_DATA_UINT32, 0 },
13981 13981 { "forwDatagrams", KSTAT_DATA_UINT64, 0 },
13982 13982 { "inUnknownProtos", KSTAT_DATA_UINT32, 0 },
13983 13983 { "inDiscards", KSTAT_DATA_UINT32, 0 },
13984 13984 { "inDelivers", KSTAT_DATA_UINT64, 0 },
13985 13985 { "outRequests", KSTAT_DATA_UINT64, 0 },
13986 13986 { "outDiscards", KSTAT_DATA_UINT32, 0 },
13987 13987 { "outNoRoutes", KSTAT_DATA_UINT32, 0 },
13988 13988 { "reasmTimeout", KSTAT_DATA_UINT32, 0 },
13989 13989 { "reasmReqds", KSTAT_DATA_UINT32, 0 },
13990 13990 { "reasmOKs", KSTAT_DATA_UINT32, 0 },
13991 13991 { "reasmFails", KSTAT_DATA_UINT32, 0 },
13992 13992 { "fragOKs", KSTAT_DATA_UINT32, 0 },
13993 13993 { "fragFails", KSTAT_DATA_UINT32, 0 },
13994 13994 { "fragCreates", KSTAT_DATA_UINT32, 0 },
13995 13995 { "addrEntrySize", KSTAT_DATA_INT32, 0 },
13996 13996 { "routeEntrySize", KSTAT_DATA_INT32, 0 },
13997 13997 { "netToMediaEntrySize", KSTAT_DATA_INT32, 0 },
13998 13998 { "routingDiscards", KSTAT_DATA_UINT32, 0 },
13999 13999 { "inErrs", KSTAT_DATA_UINT32, 0 },
14000 14000 { "noPorts", KSTAT_DATA_UINT32, 0 },
14001 14001 { "inCksumErrs", KSTAT_DATA_UINT32, 0 },
14002 14002 { "reasmDuplicates", KSTAT_DATA_UINT32, 0 },
14003 14003 { "reasmPartDups", KSTAT_DATA_UINT32, 0 },
14004 14004 { "forwProhibits", KSTAT_DATA_UINT32, 0 },
14005 14005 { "udpInCksumErrs", KSTAT_DATA_UINT32, 0 },
14006 14006 { "udpInOverflows", KSTAT_DATA_UINT32, 0 },
14007 14007 { "rawipInOverflows", KSTAT_DATA_UINT32, 0 },
14008 14008 { "ipsecInSucceeded", KSTAT_DATA_UINT32, 0 },
14009 14009 { "ipsecInFailed", KSTAT_DATA_INT32, 0 },
14010 14010 { "memberEntrySize", KSTAT_DATA_INT32, 0 },
14011 14011 { "inIPv6", KSTAT_DATA_UINT32, 0 },
14012 14012 { "outIPv6", KSTAT_DATA_UINT32, 0 },
14013 14013 { "outSwitchIPv6", KSTAT_DATA_UINT32, 0 },
14014 14014 };
14015 14015
14016 14016 ksp = kstat_create_netstack("ip", 0, "ip", "mib2", KSTAT_TYPE_NAMED,
14017 14017 NUM_OF_FIELDS(ip_named_kstat_t), 0, stackid);
14018 14018 if (ksp == NULL || ksp->ks_data == NULL)
14019 14019 return (NULL);
14020 14020
14021 14021 template.forwarding.value.ui32 = WE_ARE_FORWARDING(ipst) ? 1:2;
14022 14022 template.defaultTTL.value.ui32 = (uint32_t)ipst->ips_ip_def_ttl;
14023 14023 template.reasmTimeout.value.ui32 = ipst->ips_ip_reassembly_timeout;
14024 14024 template.addrEntrySize.value.i32 = sizeof (mib2_ipAddrEntry_t);
14025 14025 template.routeEntrySize.value.i32 = sizeof (mib2_ipRouteEntry_t);
14026 14026
14027 14027 template.netToMediaEntrySize.value.i32 =
14028 14028 sizeof (mib2_ipNetToMediaEntry_t);
14029 14029
14030 14030 template.memberEntrySize.value.i32 = sizeof (ipv6_member_t);
14031 14031
14032 14032 bcopy(&template, ksp->ks_data, sizeof (template));
14033 14033 ksp->ks_update = ip_kstat_update;
14034 14034 ksp->ks_private = (void *)(uintptr_t)stackid;
14035 14035
14036 14036 kstat_install(ksp);
14037 14037 return (ksp);
14038 14038 }
14039 14039
14040 14040 static void
14041 14041 ip_kstat_fini(netstackid_t stackid, kstat_t *ksp)
14042 14042 {
14043 14043 if (ksp != NULL) {
14044 14044 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
14045 14045 kstat_delete_netstack(ksp, stackid);
14046 14046 }
14047 14047 }
14048 14048
14049 14049 static int
14050 14050 ip_kstat_update(kstat_t *kp, int rw)
14051 14051 {
14052 14052 ip_named_kstat_t *ipkp;
14053 14053 mib2_ipIfStatsEntry_t ipmib;
14054 14054 ill_walk_context_t ctx;
14055 14055 ill_t *ill;
14056 14056 netstackid_t stackid = (zoneid_t)(uintptr_t)kp->ks_private;
14057 14057 netstack_t *ns;
14058 14058 ip_stack_t *ipst;
14059 14059
14060 14060 if (kp == NULL || kp->ks_data == NULL)
14061 14061 return (EIO);
14062 14062
14063 14063 if (rw == KSTAT_WRITE)
14064 14064 return (EACCES);
14065 14065
14066 14066 ns = netstack_find_by_stackid(stackid);
14067 14067 if (ns == NULL)
14068 14068 return (-1);
14069 14069 ipst = ns->netstack_ip;
14070 14070 if (ipst == NULL) {
14071 14071 netstack_rele(ns);
14072 14072 return (-1);
14073 14073 }
14074 14074 ipkp = (ip_named_kstat_t *)kp->ks_data;
14075 14075
14076 14076 bcopy(&ipst->ips_ip_mib, &ipmib, sizeof (ipmib));
14077 14077 rw_enter(&ipst->ips_ill_g_lock, RW_READER);
14078 14078 ill = ILL_START_WALK_V4(&ctx, ipst);
14079 14079 for (; ill != NULL; ill = ill_next(&ctx, ill))
14080 14080 ip_mib2_add_ip_stats(&ipmib, ill->ill_ip_mib);
14081 14081 rw_exit(&ipst->ips_ill_g_lock);
14082 14082
14083 14083 ipkp->forwarding.value.ui32 = ipmib.ipIfStatsForwarding;
14084 14084 ipkp->defaultTTL.value.ui32 = ipmib.ipIfStatsDefaultTTL;
14085 14085 ipkp->inReceives.value.ui64 = ipmib.ipIfStatsHCInReceives;
14086 14086 ipkp->inHdrErrors.value.ui32 = ipmib.ipIfStatsInHdrErrors;
14087 14087 ipkp->inAddrErrors.value.ui32 = ipmib.ipIfStatsInAddrErrors;
14088 14088 ipkp->forwDatagrams.value.ui64 = ipmib.ipIfStatsHCOutForwDatagrams;
14089 14089 ipkp->inUnknownProtos.value.ui32 = ipmib.ipIfStatsInUnknownProtos;
14090 14090 ipkp->inDiscards.value.ui32 = ipmib.ipIfStatsInDiscards;
14091 14091 ipkp->inDelivers.value.ui64 = ipmib.ipIfStatsHCInDelivers;
14092 14092 ipkp->outRequests.value.ui64 = ipmib.ipIfStatsHCOutRequests;
14093 14093 ipkp->outDiscards.value.ui32 = ipmib.ipIfStatsOutDiscards;
14094 14094 ipkp->outNoRoutes.value.ui32 = ipmib.ipIfStatsOutNoRoutes;
14095 14095 ipkp->reasmTimeout.value.ui32 = ipst->ips_ip_reassembly_timeout;
14096 14096 ipkp->reasmReqds.value.ui32 = ipmib.ipIfStatsReasmReqds;
14097 14097 ipkp->reasmOKs.value.ui32 = ipmib.ipIfStatsReasmOKs;
14098 14098 ipkp->reasmFails.value.ui32 = ipmib.ipIfStatsReasmFails;
14099 14099 ipkp->fragOKs.value.ui32 = ipmib.ipIfStatsOutFragOKs;
14100 14100 ipkp->fragFails.value.ui32 = ipmib.ipIfStatsOutFragFails;
14101 14101 ipkp->fragCreates.value.ui32 = ipmib.ipIfStatsOutFragCreates;
14102 14102
14103 14103 ipkp->routingDiscards.value.ui32 = 0;
14104 14104 ipkp->inErrs.value.ui32 = ipmib.tcpIfStatsInErrs;
14105 14105 ipkp->noPorts.value.ui32 = ipmib.udpIfStatsNoPorts;
14106 14106 ipkp->inCksumErrs.value.ui32 = ipmib.ipIfStatsInCksumErrs;
14107 14107 ipkp->reasmDuplicates.value.ui32 = ipmib.ipIfStatsReasmDuplicates;
14108 14108 ipkp->reasmPartDups.value.ui32 = ipmib.ipIfStatsReasmPartDups;
14109 14109 ipkp->forwProhibits.value.ui32 = ipmib.ipIfStatsForwProhibits;
14110 14110 ipkp->udpInCksumErrs.value.ui32 = ipmib.udpIfStatsInCksumErrs;
14111 14111 ipkp->udpInOverflows.value.ui32 = ipmib.udpIfStatsInOverflows;
14112 14112 ipkp->rawipInOverflows.value.ui32 = ipmib.rawipIfStatsInOverflows;
14113 14113 ipkp->ipsecInSucceeded.value.ui32 = ipmib.ipsecIfStatsInSucceeded;
14114 14114 ipkp->ipsecInFailed.value.i32 = ipmib.ipsecIfStatsInFailed;
14115 14115
14116 14116 ipkp->inIPv6.value.ui32 = ipmib.ipIfStatsInWrongIPVersion;
14117 14117 ipkp->outIPv6.value.ui32 = ipmib.ipIfStatsOutWrongIPVersion;
14118 14118 ipkp->outSwitchIPv6.value.ui32 = ipmib.ipIfStatsOutSwitchIPVersion;
14119 14119
14120 14120 netstack_rele(ns);
14121 14121
14122 14122 return (0);
14123 14123 }
14124 14124
14125 14125 static void *
14126 14126 icmp_kstat_init(netstackid_t stackid)
14127 14127 {
14128 14128 kstat_t *ksp;
14129 14129
14130 14130 icmp_named_kstat_t template = {
14131 14131 { "inMsgs", KSTAT_DATA_UINT32 },
14132 14132 { "inErrors", KSTAT_DATA_UINT32 },
14133 14133 { "inDestUnreachs", KSTAT_DATA_UINT32 },
14134 14134 { "inTimeExcds", KSTAT_DATA_UINT32 },
14135 14135 { "inParmProbs", KSTAT_DATA_UINT32 },
14136 14136 { "inSrcQuenchs", KSTAT_DATA_UINT32 },
14137 14137 { "inRedirects", KSTAT_DATA_UINT32 },
14138 14138 { "inEchos", KSTAT_DATA_UINT32 },
14139 14139 { "inEchoReps", KSTAT_DATA_UINT32 },
14140 14140 { "inTimestamps", KSTAT_DATA_UINT32 },
14141 14141 { "inTimestampReps", KSTAT_DATA_UINT32 },
14142 14142 { "inAddrMasks", KSTAT_DATA_UINT32 },
14143 14143 { "inAddrMaskReps", KSTAT_DATA_UINT32 },
14144 14144 { "outMsgs", KSTAT_DATA_UINT32 },
14145 14145 { "outErrors", KSTAT_DATA_UINT32 },
14146 14146 { "outDestUnreachs", KSTAT_DATA_UINT32 },
14147 14147 { "outTimeExcds", KSTAT_DATA_UINT32 },
14148 14148 { "outParmProbs", KSTAT_DATA_UINT32 },
14149 14149 { "outSrcQuenchs", KSTAT_DATA_UINT32 },
14150 14150 { "outRedirects", KSTAT_DATA_UINT32 },
14151 14151 { "outEchos", KSTAT_DATA_UINT32 },
14152 14152 { "outEchoReps", KSTAT_DATA_UINT32 },
14153 14153 { "outTimestamps", KSTAT_DATA_UINT32 },
14154 14154 { "outTimestampReps", KSTAT_DATA_UINT32 },
14155 14155 { "outAddrMasks", KSTAT_DATA_UINT32 },
14156 14156 { "outAddrMaskReps", KSTAT_DATA_UINT32 },
14157 14157 { "inChksumErrs", KSTAT_DATA_UINT32 },
14158 14158 { "inUnknowns", KSTAT_DATA_UINT32 },
14159 14159 { "inFragNeeded", KSTAT_DATA_UINT32 },
14160 14160 { "outFragNeeded", KSTAT_DATA_UINT32 },
14161 14161 { "outDrops", KSTAT_DATA_UINT32 },
14162 14162 { "inOverFlows", KSTAT_DATA_UINT32 },
14163 14163 { "inBadRedirects", KSTAT_DATA_UINT32 },
14164 14164 };
14165 14165
14166 14166 ksp = kstat_create_netstack("ip", 0, "icmp", "mib2", KSTAT_TYPE_NAMED,
14167 14167 NUM_OF_FIELDS(icmp_named_kstat_t), 0, stackid);
14168 14168 if (ksp == NULL || ksp->ks_data == NULL)
14169 14169 return (NULL);
14170 14170
14171 14171 bcopy(&template, ksp->ks_data, sizeof (template));
14172 14172
14173 14173 ksp->ks_update = icmp_kstat_update;
14174 14174 ksp->ks_private = (void *)(uintptr_t)stackid;
14175 14175
14176 14176 kstat_install(ksp);
14177 14177 return (ksp);
14178 14178 }
14179 14179
14180 14180 static void
14181 14181 icmp_kstat_fini(netstackid_t stackid, kstat_t *ksp)
14182 14182 {
14183 14183 if (ksp != NULL) {
14184 14184 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
14185 14185 kstat_delete_netstack(ksp, stackid);
14186 14186 }
14187 14187 }
14188 14188
14189 14189 static int
14190 14190 icmp_kstat_update(kstat_t *kp, int rw)
14191 14191 {
14192 14192 icmp_named_kstat_t *icmpkp;
14193 14193 netstackid_t stackid = (zoneid_t)(uintptr_t)kp->ks_private;
14194 14194 netstack_t *ns;
14195 14195 ip_stack_t *ipst;
14196 14196
14197 14197 if ((kp == NULL) || (kp->ks_data == NULL))
14198 14198 return (EIO);
14199 14199
14200 14200 if (rw == KSTAT_WRITE)
14201 14201 return (EACCES);
14202 14202
14203 14203 ns = netstack_find_by_stackid(stackid);
14204 14204 if (ns == NULL)
14205 14205 return (-1);
14206 14206 ipst = ns->netstack_ip;
14207 14207 if (ipst == NULL) {
14208 14208 netstack_rele(ns);
14209 14209 return (-1);
14210 14210 }
14211 14211 icmpkp = (icmp_named_kstat_t *)kp->ks_data;
14212 14212
14213 14213 icmpkp->inMsgs.value.ui32 = ipst->ips_icmp_mib.icmpInMsgs;
14214 14214 icmpkp->inErrors.value.ui32 = ipst->ips_icmp_mib.icmpInErrors;
14215 14215 icmpkp->inDestUnreachs.value.ui32 =
14216 14216 ipst->ips_icmp_mib.icmpInDestUnreachs;
14217 14217 icmpkp->inTimeExcds.value.ui32 = ipst->ips_icmp_mib.icmpInTimeExcds;
14218 14218 icmpkp->inParmProbs.value.ui32 = ipst->ips_icmp_mib.icmpInParmProbs;
14219 14219 icmpkp->inSrcQuenchs.value.ui32 = ipst->ips_icmp_mib.icmpInSrcQuenchs;
14220 14220 icmpkp->inRedirects.value.ui32 = ipst->ips_icmp_mib.icmpInRedirects;
14221 14221 icmpkp->inEchos.value.ui32 = ipst->ips_icmp_mib.icmpInEchos;
14222 14222 icmpkp->inEchoReps.value.ui32 = ipst->ips_icmp_mib.icmpInEchoReps;
14223 14223 icmpkp->inTimestamps.value.ui32 = ipst->ips_icmp_mib.icmpInTimestamps;
14224 14224 icmpkp->inTimestampReps.value.ui32 =
14225 14225 ipst->ips_icmp_mib.icmpInTimestampReps;
14226 14226 icmpkp->inAddrMasks.value.ui32 = ipst->ips_icmp_mib.icmpInAddrMasks;
14227 14227 icmpkp->inAddrMaskReps.value.ui32 =
14228 14228 ipst->ips_icmp_mib.icmpInAddrMaskReps;
14229 14229 icmpkp->outMsgs.value.ui32 = ipst->ips_icmp_mib.icmpOutMsgs;
14230 14230 icmpkp->outErrors.value.ui32 = ipst->ips_icmp_mib.icmpOutErrors;
14231 14231 icmpkp->outDestUnreachs.value.ui32 =
14232 14232 ipst->ips_icmp_mib.icmpOutDestUnreachs;
14233 14233 icmpkp->outTimeExcds.value.ui32 = ipst->ips_icmp_mib.icmpOutTimeExcds;
14234 14234 icmpkp->outParmProbs.value.ui32 = ipst->ips_icmp_mib.icmpOutParmProbs;
14235 14235 icmpkp->outSrcQuenchs.value.ui32 =
14236 14236 ipst->ips_icmp_mib.icmpOutSrcQuenchs;
14237 14237 icmpkp->outRedirects.value.ui32 = ipst->ips_icmp_mib.icmpOutRedirects;
14238 14238 icmpkp->outEchos.value.ui32 = ipst->ips_icmp_mib.icmpOutEchos;
14239 14239 icmpkp->outEchoReps.value.ui32 = ipst->ips_icmp_mib.icmpOutEchoReps;
14240 14240 icmpkp->outTimestamps.value.ui32 =
14241 14241 ipst->ips_icmp_mib.icmpOutTimestamps;
14242 14242 icmpkp->outTimestampReps.value.ui32 =
14243 14243 ipst->ips_icmp_mib.icmpOutTimestampReps;
14244 14244 icmpkp->outAddrMasks.value.ui32 =
14245 14245 ipst->ips_icmp_mib.icmpOutAddrMasks;
14246 14246 icmpkp->outAddrMaskReps.value.ui32 =
14247 14247 ipst->ips_icmp_mib.icmpOutAddrMaskReps;
14248 14248 icmpkp->inCksumErrs.value.ui32 = ipst->ips_icmp_mib.icmpInCksumErrs;
14249 14249 icmpkp->inUnknowns.value.ui32 = ipst->ips_icmp_mib.icmpInUnknowns;
14250 14250 icmpkp->inFragNeeded.value.ui32 = ipst->ips_icmp_mib.icmpInFragNeeded;
14251 14251 icmpkp->outFragNeeded.value.ui32 =
14252 14252 ipst->ips_icmp_mib.icmpOutFragNeeded;
14253 14253 icmpkp->outDrops.value.ui32 = ipst->ips_icmp_mib.icmpOutDrops;
14254 14254 icmpkp->inOverflows.value.ui32 = ipst->ips_icmp_mib.icmpInOverflows;
14255 14255 icmpkp->inBadRedirects.value.ui32 =
14256 14256 ipst->ips_icmp_mib.icmpInBadRedirects;
14257 14257
14258 14258 netstack_rele(ns);
14259 14259 return (0);
14260 14260 }
14261 14261
14262 14262 /*
14263 14263 * This is the fanout function for raw socket opened for SCTP. Note
14264 14264 * that it is called after SCTP checks that there is no socket which
14265 14265 * wants a packet. Then before SCTP handles this out of the blue packet,
14266 14266 * this function is called to see if there is any raw socket for SCTP.
14267 14267 * If there is and it is bound to the correct address, the packet will
14268 14268 * be sent to that socket. Note that only one raw socket can be bound to
14269 14269 * a port. This is assured in ipcl_sctp_hash_insert();
14270 14270 */
14271 14271 void
14272 14272 ip_fanout_sctp_raw(mblk_t *mp, ipha_t *ipha, ip6_t *ip6h, uint32_t ports,
14273 14273 ip_recv_attr_t *ira)
14274 14274 {
14275 14275 conn_t *connp;
14276 14276 queue_t *rq;
14277 14277 boolean_t secure;
14278 14278 ill_t *ill = ira->ira_ill;
14279 14279 ip_stack_t *ipst = ill->ill_ipst;
14280 14280 ipsec_stack_t *ipss = ipst->ips_netstack->netstack_ipsec;
14281 14281 sctp_stack_t *sctps = ipst->ips_netstack->netstack_sctp;
14282 14282 iaflags_t iraflags = ira->ira_flags;
14283 14283 ill_t *rill = ira->ira_rill;
14284 14284
14285 14285 secure = iraflags & IRAF_IPSEC_SECURE;
14286 14286
14287 14287 connp = ipcl_classify_raw(mp, IPPROTO_SCTP, ports, ipha, ip6h,
14288 14288 ira, ipst);
14289 14289 if (connp == NULL) {
14290 14290 /*
14291 14291 * Although raw sctp is not summed, OOB chunks must be.
14292 14292 * Drop the packet here if the sctp checksum failed.
14293 14293 */
14294 14294 if (iraflags & IRAF_SCTP_CSUM_ERR) {
14295 14295 SCTPS_BUMP_MIB(sctps, sctpChecksumError);
14296 14296 freemsg(mp);
14297 14297 return;
14298 14298 }
14299 14299 ira->ira_ill = ira->ira_rill = NULL;
14300 14300 sctp_ootb_input(mp, ira, ipst);
14301 14301 ira->ira_ill = ill;
14302 14302 ira->ira_rill = rill;
14303 14303 return;
14304 14304 }
14305 14305 rq = connp->conn_rq;
14306 14306 if (IPCL_IS_NONSTR(connp) ? connp->conn_flow_cntrld : !canputnext(rq)) {
14307 14307 CONN_DEC_REF(connp);
14308 14308 BUMP_MIB(ill->ill_ip_mib, rawipIfStatsInOverflows);
14309 14309 freemsg(mp);
14310 14310 return;
14311 14311 }
14312 14312 if (((iraflags & IRAF_IS_IPV4) ?
14313 14313 CONN_INBOUND_POLICY_PRESENT(connp, ipss) :
14314 14314 CONN_INBOUND_POLICY_PRESENT_V6(connp, ipss)) ||
14315 14315 secure) {
14316 14316 mp = ipsec_check_inbound_policy(mp, connp, ipha,
14317 14317 ip6h, ira);
14318 14318 if (mp == NULL) {
14319 14319 BUMP_MIB(ill->ill_ip_mib, ipIfStatsInDiscards);
14320 14320 /* Note that mp is NULL */
14321 14321 ip_drop_input("ipIfStatsInDiscards", mp, ill);
14322 14322 CONN_DEC_REF(connp);
14323 14323 return;
14324 14324 }
14325 14325 }
14326 14326
14327 14327 if (iraflags & IRAF_ICMP_ERROR) {
14328 14328 (connp->conn_recvicmp)(connp, mp, NULL, ira);
14329 14329 } else {
14330 14330 ill_t *rill = ira->ira_rill;
14331 14331
14332 14332 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCInDelivers);
14333 14333 /* This is the SOCK_RAW, IPPROTO_SCTP case. */
14334 14334 ira->ira_ill = ira->ira_rill = NULL;
14335 14335 (connp->conn_recv)(connp, mp, NULL, ira);
14336 14336 ira->ira_ill = ill;
14337 14337 ira->ira_rill = rill;
14338 14338 }
14339 14339 CONN_DEC_REF(connp);
14340 14340 }
14341 14341
14342 14342 /*
14343 14343 * Free a packet that has the link-layer dl_unitdata_req_t or fast-path
14344 14344 * header before the ip payload.
14345 14345 */
14346 14346 static void
14347 14347 ip_xmit_flowctl_drop(ill_t *ill, mblk_t *mp, boolean_t is_fp_mp, int fp_mp_len)
14348 14348 {
14349 14349 int len = (mp->b_wptr - mp->b_rptr);
14350 14350 mblk_t *ip_mp;
14351 14351
14352 14352 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14353 14353 if (is_fp_mp || len != fp_mp_len) {
14354 14354 if (len > fp_mp_len) {
14355 14355 /*
14356 14356 * fastpath header and ip header in the first mblk
14357 14357 */
14358 14358 mp->b_rptr += fp_mp_len;
14359 14359 } else {
14360 14360 /*
14361 14361 * ip_xmit_attach_llhdr had to prepend an mblk to
14362 14362 * attach the fastpath header before ip header.
14363 14363 */
14364 14364 ip_mp = mp->b_cont;
14365 14365 freeb(mp);
14366 14366 mp = ip_mp;
14367 14367 mp->b_rptr += (fp_mp_len - len);
14368 14368 }
14369 14369 } else {
14370 14370 ip_mp = mp->b_cont;
14371 14371 freeb(mp);
14372 14372 mp = ip_mp;
14373 14373 }
14374 14374 ip_drop_output("ipIfStatsOutDiscards - flow ctl", mp, ill);
14375 14375 freemsg(mp);
14376 14376 }
14377 14377
14378 14378 /*
14379 14379 * Normal post fragmentation function.
14380 14380 *
14381 14381 * Send a packet using the passed in nce. This handles both IPv4 and IPv6
14382 14382 * using the same state machine.
14383 14383 *
14384 14384 * We return an error on failure. In particular we return EWOULDBLOCK
14385 14385 * when the driver flow controls. In that case this ensures that ip_wsrv runs
14386 14386 * (currently by canputnext failure resulting in backenabling from GLD.)
14387 14387 * This allows the callers of conn_ip_output() to use EWOULDBLOCK as an
14388 14388 * indication that they can flow control until ip_wsrv() tells then to restart.
14389 14389 *
14390 14390 * If the nce passed by caller is incomplete, this function
14391 14391 * queues the packet and if necessary, sends ARP request and bails.
14392 14392 * If the Neighbor Cache passed is fully resolved, we simply prepend
14393 14393 * the link-layer header to the packet, do ipsec hw acceleration
14394 14394 * work if necessary, and send the packet out on the wire.
14395 14395 */
14396 14396 /* ARGSUSED6 */
14397 14397 int
14398 14398 ip_xmit(mblk_t *mp, nce_t *nce, iaflags_t ixaflags, uint_t pkt_len,
14399 14399 uint32_t xmit_hint, zoneid_t szone, zoneid_t nolzid, uintptr_t *ixacookie)
14400 14400 {
14401 14401 queue_t *wq;
14402 14402 ill_t *ill = nce->nce_ill;
14403 14403 ip_stack_t *ipst = ill->ill_ipst;
14404 14404 uint64_t delta;
14405 14405 boolean_t isv6 = ill->ill_isv6;
14406 14406 boolean_t fp_mp;
14407 14407 ncec_t *ncec = nce->nce_common;
14408 14408 int64_t now = LBOLT_FASTPATH64;
14409 14409 boolean_t is_probe;
14410 14410
14411 14411 DTRACE_PROBE1(ip__xmit, nce_t *, nce);
14412 14412
14413 14413 ASSERT(mp != NULL);
14414 14414 ASSERT(mp->b_datap->db_type == M_DATA);
14415 14415 ASSERT(pkt_len == msgdsize(mp));
14416 14416
14417 14417 /*
14418 14418 * If we have already been here and are coming back after ARP/ND.
14419 14419 * the IXAF_NO_TRACE flag is set. We skip FW_HOOKS, DTRACE and ipobs
14420 14420 * in that case since they have seen the packet when it came here
14421 14421 * the first time.
14422 14422 */
14423 14423 if (ixaflags & IXAF_NO_TRACE)
14424 14424 goto sendit;
14425 14425
14426 14426 if (ixaflags & IXAF_IS_IPV4) {
14427 14427 ipha_t *ipha = (ipha_t *)mp->b_rptr;
14428 14428
14429 14429 ASSERT(!isv6);
14430 14430 ASSERT(pkt_len == ntohs(((ipha_t *)mp->b_rptr)->ipha_length));
14431 14431 if (HOOKS4_INTERESTED_PHYSICAL_OUT(ipst) &&
14432 14432 !(ixaflags & IXAF_NO_PFHOOK)) {
14433 14433 int error;
14434 14434
14435 14435 FW_HOOKS(ipst->ips_ip4_physical_out_event,
14436 14436 ipst->ips_ipv4firewall_physical_out,
14437 14437 NULL, ill, ipha, mp, mp, 0, ipst, error);
14438 14438 DTRACE_PROBE1(ip4__physical__out__end,
14439 14439 mblk_t *, mp);
14440 14440 if (mp == NULL)
14441 14441 return (error);
14442 14442
14443 14443 /* The length could have changed */
14444 14444 pkt_len = msgdsize(mp);
14445 14445 }
14446 14446 if (ipst->ips_ip4_observe.he_interested) {
14447 14447 /*
14448 14448 * Note that for TX the zoneid is the sending
14449 14449 * zone, whether or not MLP is in play.
14450 14450 * Since the szone argument is the IP zoneid (i.e.,
14451 14451 * zero for exclusive-IP zones) and ipobs wants
14452 14452 * the system zoneid, we map it here.
14453 14453 */
14454 14454 szone = IP_REAL_ZONEID(szone, ipst);
14455 14455
14456 14456 /*
14457 14457 * On the outbound path the destination zone will be
14458 14458 * unknown as we're sending this packet out on the
14459 14459 * wire.
14460 14460 */
14461 14461 ipobs_hook(mp, IPOBS_HOOK_OUTBOUND, szone, ALL_ZONES,
14462 14462 ill, ipst);
14463 14463 }
14464 14464 DTRACE_IP7(send, mblk_t *, mp, conn_t *, NULL,
14465 14465 void_ip_t *, ipha, __dtrace_ipsr_ill_t *, ill,
14466 14466 ipha_t *, ipha, ip6_t *, NULL, int, 0);
14467 14467 } else {
14468 14468 ip6_t *ip6h = (ip6_t *)mp->b_rptr;
14469 14469
14470 14470 ASSERT(isv6);
14471 14471 ASSERT(pkt_len ==
14472 14472 ntohs(((ip6_t *)mp->b_rptr)->ip6_plen) + IPV6_HDR_LEN);
14473 14473 if (HOOKS6_INTERESTED_PHYSICAL_OUT(ipst) &&
14474 14474 !(ixaflags & IXAF_NO_PFHOOK)) {
14475 14475 int error;
14476 14476
14477 14477 FW_HOOKS6(ipst->ips_ip6_physical_out_event,
14478 14478 ipst->ips_ipv6firewall_physical_out,
14479 14479 NULL, ill, ip6h, mp, mp, 0, ipst, error);
14480 14480 DTRACE_PROBE1(ip6__physical__out__end,
14481 14481 mblk_t *, mp);
14482 14482 if (mp == NULL)
14483 14483 return (error);
14484 14484
14485 14485 /* The length could have changed */
14486 14486 pkt_len = msgdsize(mp);
14487 14487 }
14488 14488 if (ipst->ips_ip6_observe.he_interested) {
14489 14489 /* See above */
14490 14490 szone = IP_REAL_ZONEID(szone, ipst);
14491 14491
14492 14492 ipobs_hook(mp, IPOBS_HOOK_OUTBOUND, szone, ALL_ZONES,
14493 14493 ill, ipst);
14494 14494 }
14495 14495 DTRACE_IP7(send, mblk_t *, mp, conn_t *, NULL,
14496 14496 void_ip_t *, ip6h, __dtrace_ipsr_ill_t *, ill,
14497 14497 ipha_t *, NULL, ip6_t *, ip6h, int, 0);
14498 14498 }
14499 14499
14500 14500 sendit:
14501 14501 /*
14502 14502 * We check the state without a lock because the state can never
14503 14503 * move "backwards" to initial or incomplete.
14504 14504 */
14505 14505 switch (ncec->ncec_state) {
14506 14506 case ND_REACHABLE:
14507 14507 case ND_STALE:
14508 14508 case ND_DELAY:
14509 14509 case ND_PROBE:
14510 14510 mp = ip_xmit_attach_llhdr(mp, nce);
14511 14511 if (mp == NULL) {
14512 14512 /*
14513 14513 * ip_xmit_attach_llhdr has increased
14514 14514 * ipIfStatsOutDiscards and called ip_drop_output()
14515 14515 */
14516 14516 return (ENOBUFS);
14517 14517 }
14518 14518 /*
14519 14519 * check if nce_fastpath completed and we tagged on a
14520 14520 * copy of nce_fp_mp in ip_xmit_attach_llhdr().
14521 14521 */
14522 14522 fp_mp = (mp->b_datap->db_type == M_DATA);
14523 14523
14524 14524 if (fp_mp &&
14525 14525 (ill->ill_capabilities & ILL_CAPAB_DLD_DIRECT)) {
14526 14526 ill_dld_direct_t *idd;
14527 14527
14528 14528 idd = &ill->ill_dld_capab->idc_direct;
14529 14529 /*
14530 14530 * Send the packet directly to DLD, where it
14531 14531 * may be queued depending on the availability
14532 14532 * of transmit resources at the media layer.
14533 14533 * Return value should be taken into
14534 14534 * account and flow control the TCP.
14535 14535 */
14536 14536 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCOutTransmits);
14537 14537 UPDATE_MIB(ill->ill_ip_mib, ipIfStatsHCOutOctets,
14538 14538 pkt_len);
14539 14539
14540 14540 if (ixaflags & IXAF_NO_DEV_FLOW_CTL) {
14541 14541 (void) idd->idd_tx_df(idd->idd_tx_dh, mp,
14542 14542 (uintptr_t)xmit_hint, IP_DROP_ON_NO_DESC);
14543 14543 } else {
14544 14544 uintptr_t cookie;
14545 14545
14546 14546 if ((cookie = idd->idd_tx_df(idd->idd_tx_dh,
14547 14547 mp, (uintptr_t)xmit_hint, 0)) != 0) {
14548 14548 if (ixacookie != NULL)
14549 14549 *ixacookie = cookie;
14550 14550 return (EWOULDBLOCK);
14551 14551 }
14552 14552 }
14553 14553 } else {
14554 14554 wq = ill->ill_wq;
14555 14555
14556 14556 if (!(ixaflags & IXAF_NO_DEV_FLOW_CTL) &&
14557 14557 !canputnext(wq)) {
14558 14558 if (ixacookie != NULL)
14559 14559 *ixacookie = 0;
14560 14560 ip_xmit_flowctl_drop(ill, mp, fp_mp,
14561 14561 nce->nce_fp_mp != NULL ?
14562 14562 MBLKL(nce->nce_fp_mp) : 0);
14563 14563 return (EWOULDBLOCK);
14564 14564 }
14565 14565 BUMP_MIB(ill->ill_ip_mib, ipIfStatsHCOutTransmits);
14566 14566 UPDATE_MIB(ill->ill_ip_mib, ipIfStatsHCOutOctets,
14567 14567 pkt_len);
14568 14568 putnext(wq, mp);
14569 14569 }
14570 14570
14571 14571 /*
14572 14572 * The rest of this function implements Neighbor Unreachability
14573 14573 * detection. Determine if the ncec is eligible for NUD.
14574 14574 */
14575 14575 if (ncec->ncec_flags & NCE_F_NONUD)
14576 14576 return (0);
14577 14577
14578 14578 ASSERT(ncec->ncec_state != ND_INCOMPLETE);
14579 14579
14580 14580 /*
14581 14581 * Check for upper layer advice
14582 14582 */
14583 14583 if (ixaflags & IXAF_REACH_CONF) {
14584 14584 timeout_id_t tid;
14585 14585
14586 14586 /*
14587 14587 * It should be o.k. to check the state without
14588 14588 * a lock here, at most we lose an advice.
14589 14589 */
14590 14590 ncec->ncec_last = TICK_TO_MSEC(now);
14591 14591 if (ncec->ncec_state != ND_REACHABLE) {
14592 14592 mutex_enter(&ncec->ncec_lock);
14593 14593 ncec->ncec_state = ND_REACHABLE;
14594 14594 tid = ncec->ncec_timeout_id;
14595 14595 ncec->ncec_timeout_id = 0;
14596 14596 mutex_exit(&ncec->ncec_lock);
14597 14597 (void) untimeout(tid);
14598 14598 if (ip_debug > 2) {
14599 14599 /* ip1dbg */
14600 14600 pr_addr_dbg("ip_xmit: state"
14601 14601 " for %s changed to"
14602 14602 " REACHABLE\n", AF_INET6,
14603 14603 &ncec->ncec_addr);
14604 14604 }
14605 14605 }
14606 14606 return (0);
14607 14607 }
14608 14608
14609 14609 delta = TICK_TO_MSEC(now) - ncec->ncec_last;
14610 14610 ip1dbg(("ip_xmit: delta = %" PRId64
14611 14611 " ill_reachable_time = %d \n", delta,
14612 14612 ill->ill_reachable_time));
14613 14613 if (delta > (uint64_t)ill->ill_reachable_time) {
14614 14614 mutex_enter(&ncec->ncec_lock);
14615 14615 switch (ncec->ncec_state) {
14616 14616 case ND_REACHABLE:
14617 14617 ASSERT((ncec->ncec_flags & NCE_F_NONUD) == 0);
14618 14618 /* FALLTHROUGH */
14619 14619 case ND_STALE:
14620 14620 /*
14621 14621 * ND_REACHABLE is identical to
14622 14622 * ND_STALE in this specific case. If
14623 14623 * reachable time has expired for this
14624 14624 * neighbor (delta is greater than
14625 14625 * reachable time), conceptually, the
14626 14626 * neighbor cache is no longer in
14627 14627 * REACHABLE state, but already in
14628 14628 * STALE state. So the correct
14629 14629 * transition here is to ND_DELAY.
14630 14630 */
14631 14631 ncec->ncec_state = ND_DELAY;
14632 14632 mutex_exit(&ncec->ncec_lock);
14633 14633 nce_restart_timer(ncec,
14634 14634 ipst->ips_delay_first_probe_time);
14635 14635 if (ip_debug > 3) {
14636 14636 /* ip2dbg */
14637 14637 pr_addr_dbg("ip_xmit: state"
14638 14638 " for %s changed to"
14639 14639 " DELAY\n", AF_INET6,
14640 14640 &ncec->ncec_addr);
14641 14641 }
14642 14642 break;
14643 14643 case ND_DELAY:
14644 14644 case ND_PROBE:
14645 14645 mutex_exit(&ncec->ncec_lock);
14646 14646 /* Timers have already started */
14647 14647 break;
14648 14648 case ND_UNREACHABLE:
14649 14649 /*
14650 14650 * nce_timer has detected that this ncec
14651 14651 * is unreachable and initiated deleting
14652 14652 * this ncec.
14653 14653 * This is a harmless race where we found the
14654 14654 * ncec before it was deleted and have
14655 14655 * just sent out a packet using this
14656 14656 * unreachable ncec.
14657 14657 */
14658 14658 mutex_exit(&ncec->ncec_lock);
14659 14659 break;
14660 14660 default:
14661 14661 ASSERT(0);
14662 14662 mutex_exit(&ncec->ncec_lock);
14663 14663 }
14664 14664 }
14665 14665 return (0);
14666 14666
14667 14667 case ND_INCOMPLETE:
14668 14668 /*
14669 14669 * the state could have changed since we didn't hold the lock.
14670 14670 * Re-verify state under lock.
14671 14671 */
14672 14672 is_probe = ipmp_packet_is_probe(mp, nce->nce_ill);
14673 14673 mutex_enter(&ncec->ncec_lock);
14674 14674 if (NCE_ISREACHABLE(ncec)) {
14675 14675 mutex_exit(&ncec->ncec_lock);
14676 14676 goto sendit;
14677 14677 }
14678 14678 /* queue the packet */
14679 14679 nce_queue_mp(ncec, mp, is_probe);
14680 14680 mutex_exit(&ncec->ncec_lock);
14681 14681 DTRACE_PROBE2(ip__xmit__incomplete,
14682 14682 (ncec_t *), ncec, (mblk_t *), mp);
14683 14683 return (0);
14684 14684
14685 14685 case ND_INITIAL:
14686 14686 /*
14687 14687 * State could have changed since we didn't hold the lock, so
14688 14688 * re-verify state.
14689 14689 */
14690 14690 is_probe = ipmp_packet_is_probe(mp, nce->nce_ill);
14691 14691 mutex_enter(&ncec->ncec_lock);
14692 14692 if (NCE_ISREACHABLE(ncec)) {
14693 14693 mutex_exit(&ncec->ncec_lock);
14694 14694 goto sendit;
14695 14695 }
14696 14696 nce_queue_mp(ncec, mp, is_probe);
14697 14697 if (ncec->ncec_state == ND_INITIAL) {
14698 14698 ncec->ncec_state = ND_INCOMPLETE;
14699 14699 mutex_exit(&ncec->ncec_lock);
14700 14700 /*
14701 14701 * figure out the source we want to use
14702 14702 * and resolve it.
14703 14703 */
14704 14704 ip_ndp_resolve(ncec);
14705 14705 } else {
14706 14706 mutex_exit(&ncec->ncec_lock);
14707 14707 }
14708 14708 return (0);
14709 14709
14710 14710 case ND_UNREACHABLE:
14711 14711 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14712 14712 ip_drop_output("ipIfStatsOutDiscards - ND_UNREACHABLE",
14713 14713 mp, ill);
14714 14714 freemsg(mp);
14715 14715 return (0);
14716 14716
14717 14717 default:
14718 14718 ASSERT(0);
14719 14719 BUMP_MIB(ill->ill_ip_mib, ipIfStatsOutDiscards);
14720 14720 ip_drop_output("ipIfStatsOutDiscards - ND_other",
14721 14721 mp, ill);
14722 14722 freemsg(mp);
14723 14723 return (ENETUNREACH);
14724 14724 }
14725 14725 }
14726 14726
14727 14727 /*
14728 14728 * Return B_TRUE if the buffers differ in length or content.
14729 14729 * This is used for comparing extension header buffers.
14730 14730 * Note that an extension header would be declared different
14731 14731 * even if all that changed was the next header value in that header i.e.
14732 14732 * what really changed is the next extension header.
14733 14733 */
14734 14734 boolean_t
14735 14735 ip_cmpbuf(const void *abuf, uint_t alen, boolean_t b_valid, const void *bbuf,
14736 14736 uint_t blen)
14737 14737 {
14738 14738 if (!b_valid)
14739 14739 blen = 0;
14740 14740
14741 14741 if (alen != blen)
14742 14742 return (B_TRUE);
14743 14743 if (alen == 0)
14744 14744 return (B_FALSE); /* Both zero length */
14745 14745 return (bcmp(abuf, bbuf, alen));
14746 14746 }
14747 14747
14748 14748 /*
14749 14749 * Preallocate memory for ip_savebuf(). Returns B_TRUE if ok.
14750 14750 * Return B_FALSE if memory allocation fails - don't change any state!
14751 14751 */
14752 14752 boolean_t
14753 14753 ip_allocbuf(void **dstp, uint_t *dstlenp, boolean_t src_valid,
14754 14754 const void *src, uint_t srclen)
14755 14755 {
14756 14756 void *dst;
14757 14757
14758 14758 if (!src_valid)
14759 14759 srclen = 0;
14760 14760
14761 14761 ASSERT(*dstlenp == 0);
14762 14762 if (src != NULL && srclen != 0) {
14763 14763 dst = mi_alloc(srclen, BPRI_MED);
14764 14764 if (dst == NULL)
14765 14765 return (B_FALSE);
14766 14766 } else {
14767 14767 dst = NULL;
14768 14768 }
14769 14769 if (*dstp != NULL)
14770 14770 mi_free(*dstp);
14771 14771 *dstp = dst;
14772 14772 *dstlenp = dst == NULL ? 0 : srclen;
14773 14773 return (B_TRUE);
14774 14774 }
14775 14775
14776 14776 /*
14777 14777 * Replace what is in *dst, *dstlen with the source.
14778 14778 * Assumes ip_allocbuf has already been called.
14779 14779 */
14780 14780 void
14781 14781 ip_savebuf(void **dstp, uint_t *dstlenp, boolean_t src_valid,
14782 14782 const void *src, uint_t srclen)
14783 14783 {
14784 14784 if (!src_valid)
14785 14785 srclen = 0;
14786 14786
14787 14787 ASSERT(*dstlenp == srclen);
14788 14788 if (src != NULL && srclen != 0)
14789 14789 bcopy(src, *dstp, srclen);
14790 14790 }
14791 14791
14792 14792 /*
14793 14793 * Free the storage pointed to by the members of an ip_pkt_t.
14794 14794 */
14795 14795 void
14796 14796 ip_pkt_free(ip_pkt_t *ipp)
14797 14797 {
14798 14798 uint_t fields = ipp->ipp_fields;
14799 14799
14800 14800 if (fields & IPPF_HOPOPTS) {
14801 14801 kmem_free(ipp->ipp_hopopts, ipp->ipp_hopoptslen);
14802 14802 ipp->ipp_hopopts = NULL;
14803 14803 ipp->ipp_hopoptslen = 0;
14804 14804 }
14805 14805 if (fields & IPPF_RTHDRDSTOPTS) {
14806 14806 kmem_free(ipp->ipp_rthdrdstopts, ipp->ipp_rthdrdstoptslen);
14807 14807 ipp->ipp_rthdrdstopts = NULL;
14808 14808 ipp->ipp_rthdrdstoptslen = 0;
14809 14809 }
14810 14810 if (fields & IPPF_DSTOPTS) {
14811 14811 kmem_free(ipp->ipp_dstopts, ipp->ipp_dstoptslen);
14812 14812 ipp->ipp_dstopts = NULL;
14813 14813 ipp->ipp_dstoptslen = 0;
14814 14814 }
14815 14815 if (fields & IPPF_RTHDR) {
14816 14816 kmem_free(ipp->ipp_rthdr, ipp->ipp_rthdrlen);
14817 14817 ipp->ipp_rthdr = NULL;
14818 14818 ipp->ipp_rthdrlen = 0;
14819 14819 }
14820 14820 if (fields & IPPF_IPV4_OPTIONS) {
14821 14821 kmem_free(ipp->ipp_ipv4_options, ipp->ipp_ipv4_options_len);
14822 14822 ipp->ipp_ipv4_options = NULL;
14823 14823 ipp->ipp_ipv4_options_len = 0;
14824 14824 }
14825 14825 if (fields & IPPF_LABEL_V4) {
14826 14826 kmem_free(ipp->ipp_label_v4, ipp->ipp_label_len_v4);
14827 14827 ipp->ipp_label_v4 = NULL;
14828 14828 ipp->ipp_label_len_v4 = 0;
14829 14829 }
14830 14830 if (fields & IPPF_LABEL_V6) {
14831 14831 kmem_free(ipp->ipp_label_v6, ipp->ipp_label_len_v6);
14832 14832 ipp->ipp_label_v6 = NULL;
14833 14833 ipp->ipp_label_len_v6 = 0;
14834 14834 }
14835 14835 ipp->ipp_fields &= ~(IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14836 14836 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6);
14837 14837 }
14838 14838
14839 14839 /*
14840 14840 * Copy from src to dst and allocate as needed.
14841 14841 * Returns zero or ENOMEM.
14842 14842 *
14843 14843 * The caller must initialize dst to zero.
14844 14844 */
14845 14845 int
14846 14846 ip_pkt_copy(ip_pkt_t *src, ip_pkt_t *dst, int kmflag)
14847 14847 {
14848 14848 uint_t fields = src->ipp_fields;
14849 14849
14850 14850 /* Start with fields that don't require memory allocation */
14851 14851 dst->ipp_fields = fields &
14852 14852 ~(IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14853 14853 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6);
14854 14854
14855 14855 dst->ipp_addr = src->ipp_addr;
14856 14856 dst->ipp_unicast_hops = src->ipp_unicast_hops;
14857 14857 dst->ipp_hoplimit = src->ipp_hoplimit;
14858 14858 dst->ipp_tclass = src->ipp_tclass;
14859 14859 dst->ipp_type_of_service = src->ipp_type_of_service;
14860 14860
14861 14861 if (!(fields & (IPPF_HOPOPTS | IPPF_RTHDRDSTOPTS | IPPF_DSTOPTS |
14862 14862 IPPF_RTHDR | IPPF_IPV4_OPTIONS | IPPF_LABEL_V4 | IPPF_LABEL_V6)))
14863 14863 return (0);
14864 14864
14865 14865 if (fields & IPPF_HOPOPTS) {
14866 14866 dst->ipp_hopopts = kmem_alloc(src->ipp_hopoptslen, kmflag);
14867 14867 if (dst->ipp_hopopts == NULL) {
14868 14868 ip_pkt_free(dst);
14869 14869 return (ENOMEM);
14870 14870 }
14871 14871 dst->ipp_fields |= IPPF_HOPOPTS;
14872 14872 bcopy(src->ipp_hopopts, dst->ipp_hopopts,
14873 14873 src->ipp_hopoptslen);
14874 14874 dst->ipp_hopoptslen = src->ipp_hopoptslen;
14875 14875 }
14876 14876 if (fields & IPPF_RTHDRDSTOPTS) {
14877 14877 dst->ipp_rthdrdstopts = kmem_alloc(src->ipp_rthdrdstoptslen,
14878 14878 kmflag);
14879 14879 if (dst->ipp_rthdrdstopts == NULL) {
14880 14880 ip_pkt_free(dst);
14881 14881 return (ENOMEM);
14882 14882 }
14883 14883 dst->ipp_fields |= IPPF_RTHDRDSTOPTS;
14884 14884 bcopy(src->ipp_rthdrdstopts, dst->ipp_rthdrdstopts,
14885 14885 src->ipp_rthdrdstoptslen);
14886 14886 dst->ipp_rthdrdstoptslen = src->ipp_rthdrdstoptslen;
14887 14887 }
14888 14888 if (fields & IPPF_DSTOPTS) {
14889 14889 dst->ipp_dstopts = kmem_alloc(src->ipp_dstoptslen, kmflag);
14890 14890 if (dst->ipp_dstopts == NULL) {
14891 14891 ip_pkt_free(dst);
14892 14892 return (ENOMEM);
14893 14893 }
14894 14894 dst->ipp_fields |= IPPF_DSTOPTS;
14895 14895 bcopy(src->ipp_dstopts, dst->ipp_dstopts,
14896 14896 src->ipp_dstoptslen);
14897 14897 dst->ipp_dstoptslen = src->ipp_dstoptslen;
14898 14898 }
14899 14899 if (fields & IPPF_RTHDR) {
14900 14900 dst->ipp_rthdr = kmem_alloc(src->ipp_rthdrlen, kmflag);
14901 14901 if (dst->ipp_rthdr == NULL) {
14902 14902 ip_pkt_free(dst);
14903 14903 return (ENOMEM);
14904 14904 }
14905 14905 dst->ipp_fields |= IPPF_RTHDR;
14906 14906 bcopy(src->ipp_rthdr, dst->ipp_rthdr,
14907 14907 src->ipp_rthdrlen);
14908 14908 dst->ipp_rthdrlen = src->ipp_rthdrlen;
14909 14909 }
14910 14910 if (fields & IPPF_IPV4_OPTIONS) {
14911 14911 dst->ipp_ipv4_options = kmem_alloc(src->ipp_ipv4_options_len,
14912 14912 kmflag);
14913 14913 if (dst->ipp_ipv4_options == NULL) {
14914 14914 ip_pkt_free(dst);
14915 14915 return (ENOMEM);
14916 14916 }
14917 14917 dst->ipp_fields |= IPPF_IPV4_OPTIONS;
14918 14918 bcopy(src->ipp_ipv4_options, dst->ipp_ipv4_options,
14919 14919 src->ipp_ipv4_options_len);
14920 14920 dst->ipp_ipv4_options_len = src->ipp_ipv4_options_len;
14921 14921 }
14922 14922 if (fields & IPPF_LABEL_V4) {
14923 14923 dst->ipp_label_v4 = kmem_alloc(src->ipp_label_len_v4, kmflag);
14924 14924 if (dst->ipp_label_v4 == NULL) {
14925 14925 ip_pkt_free(dst);
14926 14926 return (ENOMEM);
14927 14927 }
14928 14928 dst->ipp_fields |= IPPF_LABEL_V4;
14929 14929 bcopy(src->ipp_label_v4, dst->ipp_label_v4,
14930 14930 src->ipp_label_len_v4);
14931 14931 dst->ipp_label_len_v4 = src->ipp_label_len_v4;
14932 14932 }
14933 14933 if (fields & IPPF_LABEL_V6) {
14934 14934 dst->ipp_label_v6 = kmem_alloc(src->ipp_label_len_v6, kmflag);
14935 14935 if (dst->ipp_label_v6 == NULL) {
14936 14936 ip_pkt_free(dst);
14937 14937 return (ENOMEM);
14938 14938 }
14939 14939 dst->ipp_fields |= IPPF_LABEL_V6;
14940 14940 bcopy(src->ipp_label_v6, dst->ipp_label_v6,
14941 14941 src->ipp_label_len_v6);
14942 14942 dst->ipp_label_len_v6 = src->ipp_label_len_v6;
14943 14943 }
14944 14944 if (fields & IPPF_FRAGHDR) {
14945 14945 dst->ipp_fraghdr = kmem_alloc(src->ipp_fraghdrlen, kmflag);
14946 14946 if (dst->ipp_fraghdr == NULL) {
14947 14947 ip_pkt_free(dst);
14948 14948 return (ENOMEM);
14949 14949 }
14950 14950 dst->ipp_fields |= IPPF_FRAGHDR;
14951 14951 bcopy(src->ipp_fraghdr, dst->ipp_fraghdr,
14952 14952 src->ipp_fraghdrlen);
14953 14953 dst->ipp_fraghdrlen = src->ipp_fraghdrlen;
14954 14954 }
14955 14955 return (0);
14956 14956 }
14957 14957
14958 14958 /*
14959 14959 * Returns INADDR_ANY if no source route
14960 14960 */
14961 14961 ipaddr_t
14962 14962 ip_pkt_source_route_v4(const ip_pkt_t *ipp)
14963 14963 {
14964 14964 ipaddr_t nexthop = INADDR_ANY;
14965 14965 ipoptp_t opts;
14966 14966 uchar_t *opt;
14967 14967 uint8_t optval;
14968 14968 uint8_t optlen;
14969 14969 uint32_t totallen;
14970 14970
14971 14971 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
14972 14972 return (INADDR_ANY);
14973 14973
14974 14974 totallen = ipp->ipp_ipv4_options_len;
14975 14975 if (totallen & 0x3)
14976 14976 return (INADDR_ANY);
14977 14977
14978 14978 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
14979 14979 optval != IPOPT_EOL;
14980 14980 optval = ipoptp_next(&opts)) {
14981 14981 opt = opts.ipoptp_cur;
14982 14982 switch (optval) {
14983 14983 uint8_t off;
14984 14984 case IPOPT_SSRR:
14985 14985 case IPOPT_LSRR:
14986 14986 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
14987 14987 break;
14988 14988 }
14989 14989 optlen = opts.ipoptp_len;
14990 14990 off = opt[IPOPT_OFFSET];
14991 14991 off--;
14992 14992 if (optlen < IP_ADDR_LEN ||
14993 14993 off > optlen - IP_ADDR_LEN) {
14994 14994 /* End of source route */
14995 14995 break;
14996 14996 }
14997 14997 bcopy((char *)opt + off, &nexthop, IP_ADDR_LEN);
14998 14998 if (nexthop == htonl(INADDR_LOOPBACK)) {
14999 14999 /* Ignore */
15000 15000 nexthop = INADDR_ANY;
15001 15001 break;
15002 15002 }
15003 15003 break;
15004 15004 }
15005 15005 }
15006 15006 return (nexthop);
15007 15007 }
15008 15008
15009 15009 /*
15010 15010 * Reverse a source route.
15011 15011 */
15012 15012 void
15013 15013 ip_pkt_source_route_reverse_v4(ip_pkt_t *ipp)
15014 15014 {
15015 15015 ipaddr_t tmp;
15016 15016 ipoptp_t opts;
15017 15017 uchar_t *opt;
15018 15018 uint8_t optval;
15019 15019 uint32_t totallen;
15020 15020
15021 15021 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS))
15022 15022 return;
15023 15023
15024 15024 totallen = ipp->ipp_ipv4_options_len;
15025 15025 if (totallen & 0x3)
15026 15026 return;
15027 15027
15028 15028 for (optval = ipoptp_first2(&opts, totallen, ipp->ipp_ipv4_options);
15029 15029 optval != IPOPT_EOL;
15030 15030 optval = ipoptp_next(&opts)) {
15031 15031 uint8_t off1, off2;
15032 15032
15033 15033 opt = opts.ipoptp_cur;
15034 15034 switch (optval) {
15035 15035 case IPOPT_SSRR:
15036 15036 case IPOPT_LSRR:
15037 15037 if ((opts.ipoptp_flags & IPOPTP_ERROR) != 0) {
15038 15038 break;
15039 15039 }
15040 15040 off1 = IPOPT_MINOFF_SR - 1;
15041 15041 off2 = opt[IPOPT_OFFSET] - IP_ADDR_LEN - 1;
15042 15042 while (off2 > off1) {
15043 15043 bcopy(opt + off2, &tmp, IP_ADDR_LEN);
15044 15044 bcopy(opt + off1, opt + off2, IP_ADDR_LEN);
15045 15045 bcopy(&tmp, opt + off2, IP_ADDR_LEN);
15046 15046 off2 -= IP_ADDR_LEN;
15047 15047 off1 += IP_ADDR_LEN;
15048 15048 }
15049 15049 opt[IPOPT_OFFSET] = IPOPT_MINOFF_SR;
15050 15050 break;
15051 15051 }
15052 15052 }
15053 15053 }
15054 15054
15055 15055 /*
15056 15056 * Returns NULL if no routing header
15057 15057 */
15058 15058 in6_addr_t *
15059 15059 ip_pkt_source_route_v6(const ip_pkt_t *ipp)
15060 15060 {
15061 15061 in6_addr_t *nexthop = NULL;
15062 15062 ip6_rthdr0_t *rthdr;
15063 15063
15064 15064 if (!(ipp->ipp_fields & IPPF_RTHDR))
15065 15065 return (NULL);
15066 15066
15067 15067 rthdr = (ip6_rthdr0_t *)ipp->ipp_rthdr;
15068 15068 if (rthdr->ip6r0_segleft == 0)
15069 15069 return (NULL);
15070 15070
15071 15071 nexthop = (in6_addr_t *)((char *)rthdr + sizeof (*rthdr));
15072 15072 return (nexthop);
15073 15073 }
15074 15074
15075 15075 zoneid_t
15076 15076 ip_get_zoneid_v4(ipaddr_t addr, mblk_t *mp, ip_recv_attr_t *ira,
15077 15077 zoneid_t lookup_zoneid)
15078 15078 {
15079 15079 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
15080 15080 ire_t *ire;
15081 15081 int ire_flags = MATCH_IRE_TYPE;
15082 15082 zoneid_t zoneid = ALL_ZONES;
15083 15083
15084 15084 if (is_system_labeled() && !tsol_can_accept_raw(mp, ira, B_FALSE))
15085 15085 return (ALL_ZONES);
15086 15086
15087 15087 if (lookup_zoneid != ALL_ZONES)
15088 15088 ire_flags |= MATCH_IRE_ZONEONLY;
15089 15089 ire = ire_ftable_lookup_v4(addr, NULL, NULL, IRE_LOCAL | IRE_LOOPBACK,
15090 15090 NULL, lookup_zoneid, NULL, ire_flags, 0, ipst, NULL);
15091 15091 if (ire != NULL) {
15092 15092 zoneid = IP_REAL_ZONEID(ire->ire_zoneid, ipst);
15093 15093 ire_refrele(ire);
15094 15094 }
15095 15095 return (zoneid);
15096 15096 }
15097 15097
15098 15098 zoneid_t
15099 15099 ip_get_zoneid_v6(in6_addr_t *addr, mblk_t *mp, const ill_t *ill,
15100 15100 ip_recv_attr_t *ira, zoneid_t lookup_zoneid)
15101 15101 {
15102 15102 ip_stack_t *ipst = ira->ira_ill->ill_ipst;
15103 15103 ire_t *ire;
15104 15104 int ire_flags = MATCH_IRE_TYPE;
15105 15105 zoneid_t zoneid = ALL_ZONES;
15106 15106
15107 15107 if (is_system_labeled() && !tsol_can_accept_raw(mp, ira, B_FALSE))
15108 15108 return (ALL_ZONES);
15109 15109
15110 15110 if (IN6_IS_ADDR_LINKLOCAL(addr))
15111 15111 ire_flags |= MATCH_IRE_ILL;
15112 15112
15113 15113 if (lookup_zoneid != ALL_ZONES)
15114 15114 ire_flags |= MATCH_IRE_ZONEONLY;
15115 15115 ire = ire_ftable_lookup_v6(addr, NULL, NULL, IRE_LOCAL | IRE_LOOPBACK,
15116 15116 ill, lookup_zoneid, NULL, ire_flags, 0, ipst, NULL);
15117 15117 if (ire != NULL) {
15118 15118 zoneid = IP_REAL_ZONEID(ire->ire_zoneid, ipst);
15119 15119 ire_refrele(ire);
15120 15120 }
15121 15121 return (zoneid);
15122 15122 }
15123 15123
15124 15124 /*
15125 15125 * IP obserability hook support functions.
15126 15126 */
15127 15127 static void
15128 15128 ipobs_init(ip_stack_t *ipst)
15129 15129 {
15130 15130 netid_t id;
15131 15131
15132 15132 id = net_getnetidbynetstackid(ipst->ips_netstack->netstack_stackid);
15133 15133
15134 15134 ipst->ips_ip4_observe_pr = net_protocol_lookup(id, NHF_INET);
15135 15135 VERIFY(ipst->ips_ip4_observe_pr != NULL);
15136 15136
15137 15137 ipst->ips_ip6_observe_pr = net_protocol_lookup(id, NHF_INET6);
15138 15138 VERIFY(ipst->ips_ip6_observe_pr != NULL);
15139 15139 }
15140 15140
15141 15141 static void
15142 15142 ipobs_fini(ip_stack_t *ipst)
15143 15143 {
15144 15144
15145 15145 VERIFY(net_protocol_release(ipst->ips_ip4_observe_pr) == 0);
15146 15146 VERIFY(net_protocol_release(ipst->ips_ip6_observe_pr) == 0);
15147 15147 }
15148 15148
15149 15149 /*
15150 15150 * hook_pkt_observe_t is composed in network byte order so that the
15151 15151 * entire mblk_t chain handed into hook_run can be used as-is.
15152 15152 * The caveat is that use of the fields, such as the zone fields,
15153 15153 * requires conversion into host byte order first.
15154 15154 */
15155 15155 void
15156 15156 ipobs_hook(mblk_t *mp, int htype, zoneid_t zsrc, zoneid_t zdst,
15157 15157 const ill_t *ill, ip_stack_t *ipst)
15158 15158 {
15159 15159 hook_pkt_observe_t *hdr;
15160 15160 uint64_t grifindex;
15161 15161 mblk_t *imp;
15162 15162
15163 15163 imp = allocb(sizeof (*hdr), BPRI_HI);
15164 15164 if (imp == NULL)
15165 15165 return;
15166 15166
15167 15167 hdr = (hook_pkt_observe_t *)imp->b_rptr;
15168 15168 /*
15169 15169 * b_wptr is set to make the apparent size of the data in the mblk_t
15170 15170 * to exclude the pointers at the end of hook_pkt_observer_t.
15171 15171 */
15172 15172 imp->b_wptr = imp->b_rptr + sizeof (dl_ipnetinfo_t);
15173 15173 imp->b_cont = mp;
15174 15174
15175 15175 ASSERT(DB_TYPE(mp) == M_DATA);
15176 15176
15177 15177 if (IS_UNDER_IPMP(ill))
15178 15178 grifindex = ipmp_ill_get_ipmp_ifindex(ill);
15179 15179 else
15180 15180 grifindex = 0;
15181 15181
15182 15182 hdr->hpo_version = 1;
15183 15183 hdr->hpo_htype = htons(htype);
15184 15184 hdr->hpo_pktlen = htonl((ulong_t)msgdsize(mp));
15185 15185 hdr->hpo_ifindex = htonl(ill->ill_phyint->phyint_ifindex);
15186 15186 hdr->hpo_grifindex = htonl(grifindex);
15187 15187 hdr->hpo_zsrc = htonl(zsrc);
15188 15188 hdr->hpo_zdst = htonl(zdst);
15189 15189 hdr->hpo_pkt = imp;
15190 15190 hdr->hpo_ctx = ipst->ips_netstack;
15191 15191
15192 15192 if (ill->ill_isv6) {
15193 15193 hdr->hpo_family = AF_INET6;
15194 15194 (void) hook_run(ipst->ips_ipv6_net_data->netd_hooks,
15195 15195 ipst->ips_ipv6observing, (hook_data_t)hdr);
15196 15196 } else {
15197 15197 hdr->hpo_family = AF_INET;
15198 15198 (void) hook_run(ipst->ips_ipv4_net_data->netd_hooks,
15199 15199 ipst->ips_ipv4observing, (hook_data_t)hdr);
15200 15200 }
15201 15201
15202 15202 imp->b_cont = NULL;
15203 15203 freemsg(imp);
15204 15204 }
15205 15205
15206 15206 /*
15207 15207 * Utility routine that checks if `v4srcp' is a valid address on underlying
15208 15208 * interface `ill'. If `ipifp' is non-NULL, it's set to a held ipif
15209 15209 * associated with `v4srcp' on success. NOTE: if this is not called from
15210 15210 * inside the IPSQ (ill_g_lock is not held), `ill' may be removed from the
15211 15211 * group during or after this lookup.
15212 15212 */
15213 15213 boolean_t
15214 15214 ipif_lookup_testaddr_v4(ill_t *ill, const in_addr_t *v4srcp, ipif_t **ipifp)
15215 15215 {
15216 15216 ipif_t *ipif;
15217 15217
15218 15218 ipif = ipif_lookup_addr_exact(*v4srcp, ill, ill->ill_ipst);
15219 15219 if (ipif != NULL) {
15220 15220 if (ipifp != NULL)
15221 15221 *ipifp = ipif;
15222 15222 else
15223 15223 ipif_refrele(ipif);
15224 15224 return (B_TRUE);
15225 15225 }
15226 15226
15227 15227 ip1dbg(("ipif_lookup_testaddr_v4: cannot find ipif for src %x\n",
15228 15228 *v4srcp));
15229 15229 return (B_FALSE);
15230 15230 }
15231 15231
15232 15232 /*
15233 15233 * Transport protocol call back function for CPU state change.
15234 15234 */
15235 15235 /* ARGSUSED */
15236 15236 static int
15237 15237 ip_tp_cpu_update(cpu_setup_t what, int id, void *arg)
15238 15238 {
15239 15239 processorid_t cpu_seqid;
15240 15240 netstack_handle_t nh;
15241 15241 netstack_t *ns;
15242 15242
15243 15243 ASSERT(MUTEX_HELD(&cpu_lock));
15244 15244
15245 15245 switch (what) {
15246 15246 case CPU_CONFIG:
15247 15247 case CPU_ON:
15248 15248 case CPU_INIT:
15249 15249 case CPU_CPUPART_IN:
15250 15250 cpu_seqid = cpu[id]->cpu_seqid;
15251 15251 netstack_next_init(&nh);
15252 15252 while ((ns = netstack_next(&nh)) != NULL) {
15253 15253 tcp_stack_cpu_add(ns->netstack_tcp, cpu_seqid);
15254 15254 sctp_stack_cpu_add(ns->netstack_sctp, cpu_seqid);
15255 15255 udp_stack_cpu_add(ns->netstack_udp, cpu_seqid);
15256 15256 netstack_rele(ns);
15257 15257 }
15258 15258 netstack_next_fini(&nh);
15259 15259 break;
15260 15260 case CPU_UNCONFIG:
15261 15261 case CPU_OFF:
15262 15262 case CPU_CPUPART_OUT:
15263 15263 /*
15264 15264 * Nothing to do. We don't remove the per CPU stats from
15265 15265 * the IP stack even when the CPU goes offline.
15266 15266 */
15267 15267 break;
15268 15268 default:
15269 15269 break;
15270 15270 }
15271 15271 return (0);
15272 15272 }
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