diff options
| author | Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> | 2013-10-16 10:07:13 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-18 22:02:52 +0200 |
| commit | 8adff41c3d259eb5e313b7b04669eee545925154 (patch) | |
| tree | 0457c19489a9c482ff5c15fc16729673aa633dda /net/bridge/br_fdb.c | |
| parent | bridge: Correctly clamp MAX forward_delay when enabling STP (diff) | |
| download | linux-8adff41c3d259eb5e313b7b04669eee545925154.tar.xz linux-8adff41c3d259eb5e313b7b04669eee545925154.zip | |
bridge: Don't use VID 0 and 4095 in vlan filtering
IEEE 802.1Q says that:
- VID 0 shall not be configured as a PVID, or configured in any Filtering
Database entry.
- VID 4095 shall not be configured as a PVID, or transmitted in a tag
header. This VID value may be used to indicate a wildcard match for the VID
in management operations or Filtering Database entries.
(See IEEE 802.1Q-2011 6.9.1 and Table 9-2)
Don't accept adding these VIDs in the vlan_filtering implementation.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Reviewed-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
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 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index ffd5874f2592..33e8f23acddd 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -700,7 +700,7 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], vid = nla_get_u16(tb[NDA_VLAN]); - if (vid >= VLAN_N_VID) { + if (!vid || vid >= VLAN_VID_MASK) { pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n", vid); return -EINVAL; @@ -794,7 +794,7 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], vid = nla_get_u16(tb[NDA_VLAN]); - if (vid >= VLAN_N_VID) { + if (!vid || vid >= VLAN_VID_MASK) { pr_info("bridge: RTM_NEWNEIGH with invalid vlan id %d\n", vid); return -EINVAL; |