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/zebra_vrf.h b/zebra/zebra_vrf.h
index 790e2e53d..29f7df00f 100644
--- a/zebra/zebra_vrf.h
+++ b/zebra/zebra_vrf.h
@@ -95,6 +95,15 @@ struct zebra_vrf
   u_int16_t mpls_flags;
 #define MPLS_FLAG_SCHEDULE_LSPS    (1 << 0)
 
+  /*
+   * VNI hash table (for EVPN). Only in default instance.
+   */
+  struct hash *vni_table;
+  /*
+   * Whether EVPN is enabled or not.
+   */
+  int advertise_all_vni;
+
   /* Route Installs */
   uint64_t installs;
   uint64_t removals;