commit fc6e8073f304010605f834cb2eb8c07c46461c9d
author Roopa Prabhu <roopa@cumulusnetworks.com> Sat Sep 22 21:26:20 2018 -0700
committer David S. Miller <davem@davemloft.net> Mon Sep 24 12:21:32 2018 -0700
tree d3f4fecf55349f4de7a7c8a9f3faafb394632d20
parent f7aa74e483e81c7a064ebc29e5deeb6b31cde412

neighbour: send netlink notification if NTF_ROUTER changes

send netlink notification if neigh_update results in NTF_ROUTER
change and if NEIGH_UPDATE_F_ISROUTER is on. Also move the
NTF_ROUTER change function into a helper.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/neighbour.c

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 0e1cad8..20e0d33 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1280,11 +1280,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
 		neigh->arp_queue_len_bytes = 0;
 	}
 out:
-	if (update_isrouter) {
-		neigh->flags = (flags & NEIGH_UPDATE_F_ISROUTER) ?
-			(neigh->flags | NTF_ROUTER) :
-			(neigh->flags & ~NTF_ROUTER);
-	}
+	if (update_isrouter)
+		neigh_update_is_router(neigh, flags, &notify);
 	write_unlock_bh(&neigh->lock);
 
 	if (notify)