bgpd: Fix missing deletion of evpn routes

Consider the scenario of evpn, the box has some type-5 ECMP routes.

After one of its remote peers is removed ( or down ), `show evpn rmac vni all`
kept no change **sometimes**, it means the rmac of the removed peer maybe is
still in this box, and the traffic will be wrongly forwarded to the removed
peer.

The root cause is that the best path selection for type-5 routes maybe
keep no change and the best path is not routed to the removed peer, so `bgpd`
wrongly doesn't tell `zebra` to remove ( withdraw ) the type-5 routes owned
by the removed peer.

So, add a new flag to force the deletion.

Signed-off-by: anlan_cs <vic.lan@pica8.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/bgpd/bgp_table.h b/bgpd/bgp_table.h
index 9027af5ba..91941315f 100644
--- a/bgpd/bgp_table.h
+++ b/bgpd/bgp_table.h
@@ -100,6 +100,7 @@ struct bgp_node {
 #define BGP_NODE_FIB_INSTALLED          (1 << 6)
 #define BGP_NODE_LABEL_REQUESTED        (1 << 7)
 #define BGP_NODE_SOFT_RECONFIG (1 << 8)
+#define BGP_NODE_PROCESS_CLEAR (1 << 9)
 
 	struct bgp_addpath_node_data tx_addpath;