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bridge: Add fdb dst check during fdb update

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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>
This commit is contained in:
roopa 2013-04-22 12:56:49 +00:00 committed by David S. Miller
parent c39904a0ac
commit b0a397fb35
1 changed files with 14 additions and 2 deletions
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16
net/bridge/br_fdb.c
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@ -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);
}