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bgpd: uninstall all nh/rmac when l3vni is deleted

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Upon a l3vni delete (no vni under a vrf) is executed,
we should uninstall all the RMACs and NHs associated with the l3vni.
This is because by the time we get a route delete in zebra
l3vni is already deleted and we dont have refernce to RMACs and NHs

Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
This commit is contained in:
Mitesh Kanjariya 2017-10-18 01:46:40 -07:00
parent 316f4ca4d9
commit 5e06422cb1
1 changed files with 37 additions and 1 deletions
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38
zebra/zebra_vxlan.c
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@ -3668,6 +3668,32 @@ static int zebra_vxlan_handle_vni_transition(struct zebra_vrf *zvrf,
return 0;
}
/* delete and uninstall rmac hash entry */
static void zl3vni_del_rmac_hash_entry(struct hash_backet *backet,
void *ctx)
{
zebra_mac_t *zrmac = NULL;
zebra_l3vni_t *zl3vni = NULL;
zrmac = (zebra_mac_t *)backet->data;
zl3vni = (zebra_l3vni_t *)ctx;
zl3vni_rmac_uninstall(zl3vni, zrmac);
zl3vni_rmac_del(zl3vni, zrmac);
}
/* delete and uninstall nh hash entry */
static void zl3vni_del_nh_hash_entry(struct hash_backet *backet,
void *ctx)
{
zebra_neigh_t *n = NULL;
zebra_l3vni_t *zl3vni = NULL;
n = (zebra_neigh_t *)backet->data;
zl3vni = (zebra_l3vni_t *)ctx;
zl3vni_nh_uninstall(zl3vni, n);
zl3vni_nh_del(zl3vni, n);
}
/* Public functions */
/* handle evpn route in vrf table */
@ -3698,7 +3724,7 @@ void zebra_vxlan_evpn_vrf_route_del(vrf_id_t vrf_id,
zebra_l3vni_t *zl3vni = NULL;
zl3vni = zl3vni_from_vrf(vrf_id);
if (!zl3vni || !is_l3vni_oper_up(zl3vni))
if (!zl3vni)
return;
/* delete the next hop entry */
@ -6334,6 +6360,16 @@ int zebra_vxlan_process_vrf_vni_cmd(struct zebra_vrf *zvrf,
zebra_vxlan_process_l3vni_oper_down(zl3vni);
/* delete and uninstall all rmacs */
hash_iterate(zl3vni->rmac_table,
zl3vni_del_rmac_hash_entry,
zl3vni);
/* delete and uninstall all next-hops */
hash_iterate(zl3vni->nh_table,
zl3vni_del_nh_hash_entry,
zl3vni);
zvrf->l3vni = 0;
zl3vni_del(zl3vni);