bgpd: backpressure - Improve debuggability

raja-rajasekar · raja-rajasekar · commit 186db96c06e4 · 2024-07-15T14:10:00.000-07:00
Improve debuggability in backpressure code.

Ticket :#3980988

Signed-off-by: Rajasekar Raja &lt;rajasekarr@nvidia.com&gt;
diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
@@ -3939,13 +3939,15 @@ int bgp_delete(struct bgp *bgp)
 	struct bgp_dest *dest_next = NULL;
 	struct bgp_table *dest_table = NULL;
 	struct graceful_restart_info *gr_info;
+	uint32_t cnt_before, cnt_after;
 
 	assert(bgp);
 
 	/*
 	 * Iterate the pending dest list and remove all the dest pertaininig to
 	 * the bgp under delete.
 	 */
+	cnt_before = zebra_announce_count(&bm->zebra_announce_head);
 	for (dest = zebra_announce_first(&bm->zebra_announce_head); dest;
 	     dest = dest_next) {
 		dest_next = zebra_announce_next(&bm->zebra_announce_head, dest);
@@ -3957,6 +3959,11 @@ int bgp_delete(struct bgp *bgp)
 		}
 	}
 
+	cnt_after = zebra_announce_count(&bm->zebra_announce_head);
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Zebra Announce Fifo cleanup count before %u and after %u during BGP %s deletion",
+			   cnt_before, cnt_after, bgp->name_pretty);
+
 	bgp_soft_reconfig_table_task_cancel(bgp, NULL, NULL);
 
 	/* make sure we withdraw any exported routes */
