diff options
Diffstat (limited to 'zebra/zebra_vxlan.c')
| -rw-r--r-- | zebra/zebra_vxlan.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/zebra/zebra_vxlan.c b/zebra/zebra_vxlan.c index 5e0ef54a39..f928554269 100644 --- a/zebra/zebra_vxlan.c +++ b/zebra/zebra_vxlan.c @@ -3203,6 +3203,27 @@ static int zl3vni_remote_nh_del(zebra_l3vni_t *zl3vni, return 0; } +/* handle neigh update from kernel - the only thing of interest is to + * readd stale entries. + */ +static int zl3vni_local_nh_add_update(zebra_l3vni_t *zl3vni, + struct ipaddr *ip, u_int16_t state) +{ + zebra_neigh_t *n = NULL; + + n = zl3vni_nh_lookup(zl3vni, ip); + if (!n) + return 0; + + /* all next hop neigh are remote and installed by frr. + * If the kernel has aged this entry, re-install. + */ + if (state & NUD_STALE) + zl3vni_nh_install(zl3vni, n); + + return 0; +} + /* handle neigh delete from kernel */ static int zl3vni_local_nh_del(zebra_l3vni_t *zl3vni, struct ipaddr *ip) @@ -4581,6 +4602,14 @@ int zebra_vxlan_local_neigh_add_update(struct interface *ifp, zebra_vni_t *zvni = NULL; zebra_neigh_t *n = NULL; zebra_mac_t *zmac = NULL, *old_zmac = NULL; + zebra_l3vni_t *zl3vni = NULL; + + /* check if this is a remote neigh entry corresponding to remote + * next-hop + */ + zl3vni = zl3vni_from_svi(ifp, link_if); + if (zl3vni) + return zl3vni_local_nh_add_update(zl3vni, ip, state); /* We are only interested in neighbors on an SVI that resides on top * of a VxLAN bridge. |