zebra: add hooks upon enabling / disabling a VRF

zebra_vrf_enable() is the callback for VRF_ENABLE_HOOK.
It presently needs do nothing.

zebra_vrf_disable() is the callback for VRF_DISABLE_HOOK.
It presently withdraws routes, shuts down interfaces, and
clears the router-id candidates in that VRF.

Signed-off-by: Feng Lu <lu.feng@6wind.com>
Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vincent JARDIN <vincent.jardin@6wind.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/zebra/test_main.c b/zebra/test_main.c
index 0013506b9b..9b83b642d4 100644
--- a/zebra/test_main.c
+++ b/zebra/test_main.c
@@ -217,11 +217,48 @@ zebra_vrf_new (vrf_id_t vrf_id, void **info)
   return 0;
 }
 
+/* Callback upon enabling a VRF. */
+static int
+zebra_vrf_enable (vrf_id_t vrf_id, void **info)
+{
+  struct zebra_vrf *zvrf = (struct zebra_vrf *) (*info);
+
+  assert (zvrf);
+
+  return 0;
+}
+
+/* Callback upon disabling a VRF. */
+static int
+zebra_vrf_disable (vrf_id_t vrf_id, void **info)
+{
+  struct zebra_vrf *zvrf = (struct zebra_vrf *) (*info);
+  struct listnode *list_node;
+  struct interface *ifp;
+
+  assert (zvrf);
+
+  rib_close_table (zvrf->table[AFI_IP][SAFI_UNICAST]);
+  rib_close_table (zvrf->table[AFI_IP6][SAFI_UNICAST]);
+
+  for (ALL_LIST_ELEMENTS_RO (vrf_iflist (vrf_id), list_node, ifp))
+    {
+      int operative = if_is_operative (ifp);
+      UNSET_FLAG (ifp->flags, IFF_UP);
+      if (operative)
+        if_down (ifp);
+    }
+
+  return 0;
+}
+
 /* Zebra VRF initialization. */
 static void
 zebra_vrf_init (void)
 {
   vrf_add_hook (VRF_NEW_HOOK, zebra_vrf_new);
+  vrf_add_hook (VRF_ENABLE_HOOK, zebra_vrf_enable);
+  vrf_add_hook (VRF_DISABLE_HOOK, zebra_vrf_disable);
   vrf_init ();
 }