diff options
| author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2015-06-09 03:34:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-10 21:58:13 -0700 |
| commit | 8c86f967dd24a79ef202fd6f479ca9988ea31f3b (patch) | |
| tree | 7c6ddbdce8e74661e0448b24024b4b23fb0aad50 /net/bridge/br_fdb.c | |
| parent | 43559893be501d41d7833a1a0229c0bbd22b9c5c (diff) | |
| download | linux-8c86f967dd24a79ef202fd6f479ca9988ea31f3b.tar.gz | |
bridge: make br_fdb_delete also check if the port matches
Before this patch the user-specified bridge port was ignored when deleting an fdb entry and thus one could delete an entry that belonged to any port. Example (eth0 and eth1 are br0 ports): bridge fdb add 00:11:22:33:44:55 dev eth0 master bridge fdb del 00:11:22:33:44:55 dev eth1 master (succeeds) after the patch: bridge fdb add 00:11:22:33:44:55 dev eth0 master bridge fdb del 00:11:22:33:44:55 dev eth1 master RTNETLINK answers: No such file or directory Based on a patch by Wilson Kok. Reported-by: Wilson Kok <wkok@cumulusnetworks.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_fdb.c')
| -rw-r--r-- | net/bridge/br_fdb.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index cecb482ed919..13949a71591d 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -873,13 +873,15 @@ out: return err; } -static int fdb_delete_by_addr(struct net_bridge *br, const u8 *addr, u16 vlan) +static int fdb_delete_by_addr_and_port(struct net_bridge_port *p, + const u8 *addr, u16 vlan) { + struct net_bridge *br = p->br; struct hlist_head *head = &br->hash[br_mac_hash(addr, vlan)]; struct net_bridge_fdb_entry *fdb; fdb = fdb_find(head, addr, vlan); - if (!fdb) + if (!fdb || fdb->dst != p) return -ENOENT; fdb_delete(br, fdb); @@ -892,7 +894,7 @@ static int __br_fdb_delete(struct net_bridge_port *p, int err; spin_lock_bh(&p->br->hash_lock); - err = fdb_delete_by_addr(p->br, addr, vid); + err = fdb_delete_by_addr_and_port(p, addr, vid); spin_unlock_bh(&p->br->hash_lock); return err; |