5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 302,312 ****
                  FFM_OXID(cmd->cmd_oxid, frm);
                  FFM_RXID(cmd->cmd_rxid, frm);
                  FFM_S_ID(cmd->cmd_lportid, frm);
                  FFM_D_ID(cmd->cmd_rportid, frm);
                  FFM_SEQ_CNT(xch->xch_sequence_no, frm);
!                 atomic_add_8(&xch->xch_sequence_no, 1);
                  FFM_PARAM(offset, frm);
                  offset += data_size;
                  left_size -= data_size;
  
                  /*
--- 302,312 ----
                  FFM_OXID(cmd->cmd_oxid, frm);
                  FFM_RXID(cmd->cmd_rxid, frm);
                  FFM_S_ID(cmd->cmd_lportid, frm);
                  FFM_D_ID(cmd->cmd_rportid, frm);
                  FFM_SEQ_CNT(xch->xch_sequence_no, frm);
!                 atomic_inc_8(&xch->xch_sequence_no);
                  FFM_PARAM(offset, frm);
                  offset += data_size;
                  left_size -= data_size;
  
                  /*
*** 936,948 ****
                  return (FCT_FAILURE);
          } else {
                  fcoet_init_tfm(frm, NULL);
                  bzero(frm->frm_payload, frm->frm_payload_size);
          }
!         xch_oxid = atomic_add_16_nv(&ss->ss_next_sol_oxid, 1);
          if (xch_oxid == 0xFFFF) {
!                 xch_oxid = atomic_add_16_nv(&ss->ss_next_sol_oxid, 1);
          }
          FFM_R_CTL(0x22, frm);
          FRM2TFM(frm)->tfm_rctl = 0x22;
          FFM_TYPE(0x01, frm);
          FFM_F_CTL(0x290000, frm);
--- 936,948 ----
                  return (FCT_FAILURE);
          } else {
                  fcoet_init_tfm(frm, NULL);
                  bzero(frm->frm_payload, frm->frm_payload_size);
          }
!         xch_oxid = atomic_inc_16_nv(&ss->ss_next_sol_oxid);
          if (xch_oxid == 0xFFFF) {
!                 xch_oxid = atomic_inc_16_nv(&ss->ss_next_sol_oxid);
          }
          FFM_R_CTL(0x22, frm);
          FRM2TFM(frm)->tfm_rctl = 0x22;
          FFM_TYPE(0x01, frm);
          FFM_F_CTL(0x290000, frm);