2705 }
2706 
2707 int
2708 conn_untrace_ref(conn_t *connp)
2709 {
2710         int     last;
2711         conn_trace_t    *ctb;
2712 
2713         ASSERT(MUTEX_HELD(&connp->conn_lock));
2714         last = connp->conn_trace_last;
2715         last++;
2716         if (last == CONN_TRACE_MAX)
2717                 last = 0;
2718 
2719         ctb = &connp->conn_trace_buf[last];
2720         ctb->ctb_depth = getpcstack(ctb->ctb_stack, CONN_STACK_DEPTH);
2721         connp->conn_trace_last = last;
2722         return (1);
2723 }
2724 #endif

2705 }
2706 
2707 int
2708 conn_untrace_ref(conn_t *connp)
2709 {
2710         int     last;
2711         conn_trace_t    *ctb;
2712 
2713         ASSERT(MUTEX_HELD(&connp->conn_lock));
2714         last = connp->conn_trace_last;
2715         last++;
2716         if (last == CONN_TRACE_MAX)
2717                 last = 0;
2718 
2719         ctb = &connp->conn_trace_buf[last];
2720         ctb->ctb_depth = getpcstack(ctb->ctb_stack, CONN_STACK_DEPTH);
2721         connp->conn_trace_last = last;
2722         return (1);
2723 }
2724 #endif
2725 
2726 conn_pid_node_list_hdr_t *
2727 conn_get_pid_list(conn_t *connp)
2728 {
2729         conn_pid_node_list_hdr_t        *cph;
2730 
2731         if (connp->conn_upper_handle != NULL) {
2732                 return (*connp->conn_upcalls->su_get_sock_pid_list)
2733                         (connp->conn_upper_handle);
2734         } else if (!IPCL_IS_NONSTR(connp) && connp->conn_rq != NULL &&
2735                         connp->conn_rq->q_stream != NULL) {
2736                 return (sh_get_pid_list(connp->conn_rq->q_stream));
2737         }
2738 
2739         /* return an empty header */
2740         cph = kmem_zalloc(sizeof (conn_pid_node_list_hdr_t), KM_SLEEP);
2741         cph->cph_magic = CONN_PID_NODE_LIST_HDR_MAGIC;
2742         cph->cph_contents = CONN_PID_NODE_LIST_HDR_NON;
2743         cph->cph_pn_cnt = 0;
2744         cph->cph_tot_size = sizeof (conn_pid_node_list_hdr_t);
2745         cph->cph_flags = 0;
2746         cph->cph_optional1 = 0;
2747         cph->cph_optional2 = 0;
2748 
2749         return (cph);
2750 }