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authorroopa <roopa@cumulusnetworks.com>2013-04-22 16:56:49 +0400
committerDavid S. Miller <davem@davemloft.net>2013-04-29 19:40:26 +0400
commitb0a397fb352e65e3b6501dca9662617a18862ef1 (patch)
tree951ed994f24b426160e548d86c869becbda37f51 /net/bridge
parentc39904a0ac22cf05f5f44226457f6da0fe65457e (diff)
downloadlinux-b0a397fb352e65e3b6501dca9662617a18862ef1.tar.xz
bridge: Add fdb dst check during fdb update
Current bridge fdb update code does not seem to update the port during fdb update. This patch adds a check for fdb dst (port) change during fdb update. Also rearranges the call to fdb_notify to send only one notification for create and update. Changelog: v2 - Change notify flag to bool Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_fdb.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index c581f1200ef7..ebfa4443c69b 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -615,6 +615,7 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
struct net_bridge *br = source->br;
struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
struct net_bridge_fdb_entry *fdb;
+ bool modified = false;
fdb = fdb_find(head, addr, vid);
if (fdb == NULL) {
@@ -624,10 +625,16 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
fdb = fdb_create(head, source, addr, vid);
if (!fdb)
return -ENOMEM;
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+
+ modified = true;
} else {
if (flags & NLM_F_EXCL)
return -EEXIST;
+
+ if (fdb->dst != source) {
+ fdb->dst = source;
+ modified = true;
+ }
}
if (fdb_to_nud(fdb) != state) {
@@ -639,7 +646,12 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
} else
fdb->is_local = fdb->is_static = 0;
- fdb->updated = fdb->used = jiffies;
+ modified = true;
+ }
+
+ fdb->used = jiffies;
+ if (modified) {
+ fdb->updated = jiffies;
fdb_notify(br, fdb, RTM_NEWNEIGH);
}