[PATCH cumulus-4.1.y 2/5] vxlan: don't replace fdb entry if nothing changed
From: Roopa Prabhu <hidden>
Date: 2017-01-21 07:41:06
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Balakrishnan Raman <redacted> This will avoid unnecessary notifications to userspace. Signed-off-by: Balakrishnan Raman <redacted> Signed-off-by: Roopa Prabhu <redacted> --- drivers/net/vxlan.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 15b1c23..72b99ff 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c@@ -467,12 +467,19 @@ static int vxlan_fdb_replace(struct vxlan_fdb *f, if (!rd) return 0; - dst_cache_reset(&rd->dst_cache); - rd->remote_ip = *ip; - rd->remote_port = port; - rd->remote_vni = vni; - rd->remote_ifindex = ifindex; - return 1; + if (!vxlan_addr_equal(&rd->remote_ip, ip) || + rd->remote_port != port || + rd->remote_vni != vni || + rd->remote_ifindex != ifindex) { + dst_cache_reset(&rd->dst_cache); + rd->remote_ip = *ip; + rd->remote_port = port; + rd->remote_vni = vni; + rd->remote_ifindex = ifindex; + return 1; + } + + return 0; } /* Add/update destinations for multicast */
--
1.9.1