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bgpd: fix for crash when no neighbor A.B.C.D remote-as AS_NUM with orr config

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Signed-off-by: Madhuri Kuruganti <maduri111@gmail.com>
This commit is contained in:
Madhuri Kuruganti 2022-09-18 21:15:03 +05:30
parent 9f2984d97c
commit 5fcf01c9ae
3 changed files with 39 additions and 7 deletions
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42
bgpd/bgp_orr.c
View File

@ -514,8 +514,8 @@ static int peer_orr_group_set(struct peer *peer, afi_t afi, safi_t safi,
}
/* Unset optimal route reflection group from the peer*/
static int peer_orr_group_unset(struct peer *peer, afi_t afi, safi_t safi,
const char *orr_group_name)
int peer_orr_group_unset(struct peer *peer, afi_t afi, safi_t safi,
const char *orr_group_name)
{
struct bgp_orr_group *orr_group = NULL;
@ -537,8 +537,9 @@ static int peer_orr_group_unset(struct peer *peer, afi_t afi, safi_t safi,
/* Should not be Null when orr-group is enabled on peer */
assert(orr_group);
UNSET_FLAG(peer->af_flags[afi][safi], PEER_FLAG_ORR_GROUP);
XFREE(MTYPE_BGP_ORR_GROUP_NAME, peer->orr_group_name[afi][safi]);
/* Check if the peer is one of the root nodes of the ORR group */
if (is_orr_root_node(orr_group, peer->host))
return CMD_WARNING;
/* Remove the peer from ORR Group's client list */
bgp_orr_group_rrclient_update(peer, afi, safi, orr_group_name, false);
@ -546,6 +547,9 @@ static int peer_orr_group_unset(struct peer *peer, afi_t afi, safi_t safi,
/* Update ORR group active root and unregister with IGP */
bgp_peer_update_orr_group_active_root(peer, afi, safi, orr_group);
UNSET_FLAG(peer->af_flags[afi][safi], PEER_FLAG_ORR_GROUP);
XFREE(MTYPE_BGP_ORR_GROUP_NAME, peer->orr_group_name[afi][safi]);
return CMD_SUCCESS;
}
@ -894,8 +898,33 @@ void bgp_peer_update_orr_active_roots(struct peer *peer)
orr_group = bgp_orr_group_lookup_by_name(
peer->bgp, afi, safi, peer->orr_group_name[afi][safi]);
assert(orr_group);
bgp_peer_update_orr_group_active_root(peer, afi, safi,
orr_group);
/* Free ORR related memory. */
if (peer->status != Deleted) {
bgp_peer_update_orr_group_active_root(peer, afi, safi,
orr_group);
continue;
}
if (!is_orr_root_node(orr_group, peer->host)) {
peer_orr_group_unset(peer, afi, safi,
peer->orr_group_name[afi][safi]);
continue;
}
if (is_orr_primary_root(orr_group, peer->host)) {
orr_group->primary = orr_group->secondary;
orr_group->secondary = orr_group->tertiary;
} else if (is_orr_secondary_root(orr_group, peer->host))
orr_group->secondary = orr_group->tertiary;
orr_group->tertiary = NULL;
bgp_afi_safi_orr_group_set(peer->bgp, afi, safi,
orr_group->name, orr_group->primary,
orr_group->secondary,
orr_group->tertiary);
peer_orr_group_unset(peer, afi, safi,
peer->orr_group_name[afi][safi]);
}
}
@ -1048,6 +1077,7 @@ static void bgp_orr_igp_metric_register(struct bgp_orr_group *orr_group,
msg.proto = ZEBRA_ROUTE_BGP;
msg.safi = orr_group->safi;
prefix_copy(&msg.prefix, &p);
strlcpy(msg.group_name, orr_group->name, sizeof(msg.group_name));
bgp_orr_debug(
"%s: %s with IGP for metric calculation from location %pFX",

2
bgpd/bgp_orr.h
View File

@ -68,6 +68,8 @@ extern int bgp_afi_safi_orr_group_set_vty(struct vty *vty, afi_t afi,
const char *primary_str,
const char *secondary_str,
const char *tertiary_str, bool set);
extern int peer_orr_group_unset(struct peer *peer, afi_t afi, safi_t safi,
const char *orr_group_name);
extern int peer_orr_group_set_vty(struct vty *vty, const char *ip_str,
afi_t afi, safi_t safi,
const char *orr_group_name, bool set);

2
bgpd/bgp_vty.c
View File

@ -17406,7 +17406,7 @@ static void bgp_config_write_peer_af(struct vty *vty, struct bgp *bgp,
if (peer_af_flag_check(peer, afi, safi, PEER_FLAG_ORR_GROUP))
vty_out(vty, " neighbor %s optimal-route-reflection %s\n",
peer->host, peer->orr_group_name[afi][safi]);
addr, peer->orr_group_name[afi][safi]);
}
static void bgp_vpn_config_write(struct vty *vty, struct bgp *bgp, afi_t afi,