zebra: VNI and VTEP handling

Implement fundamental handling for VNIs and VTEPs:
- Handle EVPN enable/disable by client (advertise-all-vni)
- Create/update/delete VNIs based on VxLAN interface events and inform
client
- Handle VTEP add/delete from client and install into kernel
- New debug command for VxLAN/EVPN
- kernel interface (Linux/netlink only)

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/zebra/if_netlink.c b/zebra/if_netlink.c
index 972e6447f6..d0907a2670 100644
--- a/zebra/if_netlink.c
+++ b/zebra/if_netlink.c
@@ -710,6 +710,15 @@ interface_lookup_netlink (struct zebra_ns *zns)
   if (ret < 0)
     return ret;
 
+  /* Get interface information - for bridge interfaces. */
+  ret = netlink_request_intf_addr (zns, AF_BRIDGE, RTM_GETLINK,
+                                   RTEXT_FILTER_BRVLAN);
+  if (ret < 0)
+    return ret;
+  ret = netlink_parse_info (netlink_interface, &zns->netlink_cmd, zns, 0, 0);
+  if (ret < 0)
+    return ret;
+
   /* Get IPv4 address of the interfaces. */
   ret = netlink_request_intf_addr (zns, AF_INET, RTM_GETADDR, 0);
   if (ret < 0)