bgpd: bgpd-peer-outq.patch

BGP: Show more meaningful outq value in 'show ip bgp summary' output.

'outq' field in 'show ip bgp sum' displays the number of formatted packets
to a peer. Since the route announcement follows an input-buffered pattern
(i.e. adj-rib-out is a separate queue of routes per peer and packets are
formatted from the routes at the time of TCP write), the outq field doesn't
show any interesting data worth watching.

The patch is to display the adj-rib-out queue depth instead.

signed-off-by: pmohapat@cumulusnetworks.com
reviewed-by: dwalton@cumulusnetworks.com

bgpd/bgp_advertise.c

@@ -185,10 +185,12 @@ bgp_advertise_clean (struct peer *peer, struct bgp_adj_out *adj,
   struct bgp_advertise *adv;
   struct bgp_advertise_attr *baa;
   struct bgp_advertise *next;
+  struct bgp_advertise_fifo *fhead;
 
   adv = adj->adv;
   baa = adv->baa;
   next = NULL;
+  fhead = &peer->sync[afi][safi]->withdraw;
 
   if (baa)
     {
@@ -200,10 +202,12 @@ bgp_advertise_clean (struct peer *peer, struct bgp_adj_out *adj,
 
       /* Unintern BGP advertise attribute.  */
       bgp_advertise_unintern (peer->hash[afi][safi], baa);
+
+      fhead = &peer->sync[afi][safi]->update;
     }
 
   /* Unlink myself from advertisement FIFO.  */
-  FIFO_DEL (adv);
+  BGP_ADV_FIFO_DEL (fhead, adv);
 
   /* Free memory.  */
   bgp_advertise_free (adj->adv);
@@ -263,7 +267,7 @@ bgp_adj_out_set (struct bgp_node *rn, struct peer *peer, struct prefix *p,
   /* Add new advertisement to advertisement attribute list. */
   bgp_advertise_add (adv->baa, adv);
 
-  FIFO_ADD (&peer->sync[afi][safi]->update, &adv->fifo);
+  BGP_ADV_FIFO_ADD (&peer->sync[afi][safi]->update, &adv->fifo);
 }
 
 void
@@ -297,7 +301,7 @@ bgp_adj_out_unset (struct bgp_node *rn, struct peer *peer, struct prefix *p,
       adv->adj = adj;
 
       /* Add to synchronization entry for withdraw announcement.  */
-      FIFO_ADD (&peer->sync[afi][safi]->withdraw, &adv->fifo);
+      BGP_ADV_FIFO_ADD (&peer->sync[afi][safi]->withdraw, &adv->fifo);
 
       /* Schedule packet write. */
       BGP_WRITE_ON (peer->t_write, bgp_write, peer->fd);
@@ -389,9 +393,9 @@ bgp_sync_init (struct peer *peer)
       {
 	sync = XCALLOC (MTYPE_BGP_SYNCHRONISE, 
 	                sizeof (struct bgp_synchronize));
-	FIFO_INIT (&sync->update);
+	BGP_ADV_FIFO_INIT (&sync->update);
-	FIFO_INIT (&sync->withdraw);
+	BGP_ADV_FIFO_INIT (&sync->withdraw);
-	FIFO_INIT (&sync->withdraw_low);
+	BGP_ADV_FIFO_INIT (&sync->withdraw_low);
 	peer->sync[afi][safi] = sync;
 	peer->hash[afi][safi] = hash_create (baa_hash_key, baa_hash_cmp);
       }

bgpd/bgp_advertise.h

@@ -26,6 +26,7 @@ struct bgp_advertise_fifo
 {
   struct bgp_advertise *next;
   struct bgp_advertise *prev;
+  u_int32_t count;
 };
 
 /* BGP advertise attribute.  */
@@ -127,6 +128,24 @@ struct bgp_synchronize
 #define BGP_ADJ_OUT_ADD(N,A)   BGP_INFO_ADD(N,A,adj_out)
 #define BGP_ADJ_OUT_DEL(N,A)   BGP_INFO_DEL(N,A,adj_out)
 
+#define BGP_ADV_FIFO_ADD(F, N)			\
+  do {						\
+    FIFO_ADD((F), (N));				\
+    (F)->count++;				\
+  } while (0)
+
+#define BGP_ADV_FIFO_DEL(F, N)			\
+  do {						\
+    FIFO_DEL((N));				\
+    (F)->count--;				\
+  } while (0)
+
+#define BGP_ADV_FIFO_INIT(F)			\
+  do {						\
+    FIFO_INIT((F));				\
+    (F)->count = 0;				\
+  } while (0)
+
 /* Prototypes.  */
 extern void bgp_adj_out_set (struct bgp_node *, struct peer *, struct prefix *,
 		      struct attr *, afi_t, safi_t, struct bgp_info *);

bgpd/bgp_vty.c

@@ -7184,7 +7184,8 @@ bgp_show_summary (struct vty *vty, struct bgp *bgp, int afi, int safi, char *del
 		     + peer->dynamic_cap_out,
 		     0,
 		     0,
-		     (unsigned long) peer->obuf->count);
+		     peer->sync[afi][safi]->update.count +
+		     peer->sync[afi][safi]->withdraw.count);
 	  else
 	    vty_out (vty, "%5u %c %7d %c %7d %c %8d %c %4d %c %4lu %c",
 		     peer->as, *delimit,
@@ -7196,7 +7197,8 @@ bgp_show_summary (struct vty *vty, struct bgp *bgp, int afi, int safi, char *del
 		     + peer->dynamic_cap_out, *delimit,
 		     0, *delimit,
 		     0, *delimit,
-		     (unsigned long) peer->obuf->count, *delimit);
+		     peer->sync[afi][safi]->update.count +
+		     peer->sync[afi][safi]->withdraw.count, *delimit);
 
 	  vty_out (vty, "%8s",
 		   peer_uptime (peer->uptime, timebuf, BGP_UPTIME_LEN));