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

*** 11774,11784 ****
  static void
  ipif_assign_seqid(ipif_t *ipif)
  {
          ip_stack_t      *ipst = ipif->ipif_ill->ill_ipst;
  
!         ipif->ipif_seqid = atomic_add_64_nv(&ipst->ips_ipif_g_seqid, 1);
  }
  
  /*
   * Clone the contents of `sipif' to `dipif'.  Requires that both ipifs are
   * administratively down (i.e., no DAD), of the same type, and locked.  Note
--- 11774,11784 ----
  static void
  ipif_assign_seqid(ipif_t *ipif)
  {
          ip_stack_t      *ipst = ipif->ipif_ill->ill_ipst;
  
!         ipif->ipif_seqid = atomic_inc_64_nv(&ipst->ips_ipif_g_seqid);
  }
  
  /*
   * Clone the contents of `sipif' to `dipif'.  Requires that both ipifs are
   * administratively down (i.e., no DAD), of the same type, and locked.  Note
*** 12447,12459 ****
   */
  void
  ip_update_source_selection(ip_stack_t *ipst)
  {
          /* We skip past SRC_GENERATION_VERIFY */
!         if (atomic_add_32_nv(&ipst->ips_src_generation, 1) ==
              SRC_GENERATION_VERIFY)
!                 atomic_add_32(&ipst->ips_src_generation, 1);
  }
  
  /*
   * Finish the group join started in ip_sioctl_groupname().
   */
--- 12447,12459 ----
   */
  void
  ip_update_source_selection(ip_stack_t *ipst)
  {
          /* We skip past SRC_GENERATION_VERIFY */
!         if (atomic_inc_32_nv(&ipst->ips_src_generation) ==
              SRC_GENERATION_VERIFY)
!                 atomic_inc_32(&ipst->ips_src_generation);
  }
  
  /*
   * Finish the group join started in ip_sioctl_groupname().
   */