From: Renato Westphal <renato@opensourcerouting.org>
Date: Fri, 12 May 2017 14:01:02 +0000 (-0300)
Subject: bgpd: fix segfault with '[no] bgp network import-check'
X-Git-Tag: frr-3.0-rc0~31^2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=7c7f4284cf79cf973f9d50b2a40889e09e328d72;p=mirror%2Ffrr.git

bgpd: fix segfault with '[no] bgp network import-check'

These commands were causing bgpd to crash if a static VPN route was
configured.

While here, fix a bug in bgp_static_add() and bgp_static_delete().

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
---

diff --git a/bgpd/bgp_route.c b/bgpd/bgp_route.c
index 195e3811d4..de51de7a66 100644
--- a/bgpd/bgp_route.c
+++ b/bgpd/bgp_route.c
@@ -4314,7 +4314,7 @@ bgp_static_add (struct bgp *bgp)
 
 		for (rm = bgp_table_top (table); rm; rm = bgp_route_next (rm))
 		  {
-		    bgp_static = rn->info;
+		    bgp_static = rm->info;
                     bgp_static_update_safi (bgp, &rm->p, bgp_static, afi, safi);
 		  }
 	      }
@@ -4348,7 +4348,7 @@ bgp_static_delete (struct bgp *bgp)
 
 		for (rm = bgp_table_top (table); rm; rm = bgp_route_next (rm))
 		  {
-		    bgp_static = rn->info;
+		    bgp_static = rm->info;
 		    bgp_static_withdraw_safi (bgp, &rm->p,
 					       AFI_IP, safi,
 					       (struct prefix_rd *)&rn->p,
@@ -4375,6 +4375,8 @@ bgp_static_redo_import_check (struct bgp *bgp)
   afi_t afi;
   safi_t safi;
   struct bgp_node *rn;
+  struct bgp_node *rm;
+  struct bgp_table *table;
   struct bgp_static *bgp_static;
 
   /* Use this flag to force reprocessing of the route */
@@ -4384,8 +4386,21 @@ bgp_static_redo_import_check (struct bgp *bgp)
       for (rn = bgp_table_top (bgp->route[afi][safi]); rn; rn = bgp_route_next (rn))
 	if (rn->info != NULL)
 	  {
-	    bgp_static = rn->info;
-	    bgp_static_update (bgp, &rn->p, bgp_static, afi, safi);
+	    if ((safi == SAFI_MPLS_VPN) || (safi == SAFI_ENCAP) || (safi == SAFI_EVPN))
+	      {
+		table = rn->info;
+
+		for (rm = bgp_table_top (table); rm; rm = bgp_route_next (rm))
+		  {
+		    bgp_static = rm->info;
+		    bgp_static_update_safi (bgp, &rm->p, bgp_static, afi, safi);
+		  }
+	      }
+	    else
+	      {
+		bgp_static = rn->info;
+		bgp_static_update (bgp, &rn->p, bgp_static, afi, safi);
+	      }
 	  }
   bgp_flag_unset(bgp, BGP_FLAG_FORCE_STATIC_PROCESS);
 }