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

*** 132,142 ****
                  return (NULL);
  
          mutex_enter(&nts->nts_lock);
          nd = net_find(protocol, nts);
          if (nd != NULL)
!                 atomic_add_32((uint_t *)&nd->netd_refcnt, 1);
          mutex_exit(&nts->nts_lock);
          return (nd);
  }
  
  /*
--- 132,142 ----
                  return (NULL);
  
          mutex_enter(&nts->nts_lock);
          nd = net_find(protocol, nts);
          if (nd != NULL)
!                 atomic_inc_32((uint_t *)&nd->netd_refcnt);
          mutex_exit(&nts->nts_lock);
          return (nd);
  }
  
  /*
*** 155,165 ****
           * of net_protocol_release() is going to free this structure then
           * it is now the only owner (refcnt==1) and it will have been
           * removed from the nts_netd_head list on the neti_stack_t from a
           * call to net_protocol_unregister already, so it is thus an orphan.
           */
!         if (atomic_add_32_nv((uint_t *)&info->netd_refcnt, -1) == 0) {
                  ASSERT(info->netd_hooks == NULL);
                  ASSERT(info->netd_stack == NULL);
                  kmem_free(info, sizeof (struct net_data));
          }
  
--- 155,165 ----
           * of net_protocol_release() is going to free this structure then
           * it is now the only owner (refcnt==1) and it will have been
           * removed from the nts_netd_head list on the neti_stack_t from a
           * call to net_protocol_unregister already, so it is thus an orphan.
           */
!         if (atomic_dec_32_nv((uint_t *)&info->netd_refcnt) == 0) {
                  ASSERT(info->netd_hooks == NULL);
                  ASSERT(info->netd_stack == NULL);
                  kmem_free(info, sizeof (struct net_data));
          }
  
*** 199,209 ****
  
          if (info != NULL)
                  (void) net_protocol_release(info);
  
          if (n != NULL)
!                 atomic_add_32((uint_t *)&n->netd_refcnt, 1);
  
          mutex_exit(&nts->nts_lock);
  
          return (n);
  }
--- 199,209 ----
  
          if (info != NULL)
                  (void) net_protocol_release(info);
  
          if (n != NULL)
!                 atomic_inc_32((uint_t *)&n->netd_refcnt);
  
          mutex_exit(&nts->nts_lock);
  
          return (n);
  }