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| author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2015-10-12 21:47:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-13 04:57:52 -0700 |
| commit | 907b1e6e83ed25d9dece1e55b704581b6c127051 (patch) | |
| tree | e3262a006fb576e8c4866bd6fc5483bd4734bd66 /net/bridge/br_input.c | |
| parent | 4b918163aecdec1c5424dcc317907282c58838df (diff) | |
| download | linux-stable-907b1e6e83ed25d9dece1e55b704581b6c127051.tar.gz linux-stable-907b1e6e83ed25d9dece1e55b704581b6c127051.tar.bz2 linux-stable-907b1e6e83ed25d9dece1e55b704581b6c127051.zip | |
bridge: vlan: use proper rcu for the vlgrp member
The bridge and port's vlgrp member is already used in RCU way, currently
we rely on the fact that it cannot disappear while the port exists but
that is error-prone and we might miss places with improper locking
(either RCU or RTNL must be held to walk the vlan_list). So make it
official and use RCU for vlgrp to catch offenders. Introduce proper vlgrp
accessors and use them consistently throughout the code.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_input.c')
| -rw-r--r-- | net/bridge/br_input.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index f5c5a4500e2f..f7fba74108a9 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -44,7 +44,7 @@ static int br_pass_frame_up(struct sk_buff *skb) brstats->rx_bytes += skb->len; u64_stats_update_end(&brstats->syncp); - vg = br_vlan_group(br); + vg = br_vlan_group_rcu(br); /* Bridge is just like any other port. Make sure the * packet is allowed except in promisc modue when someone * may be running packet capture. @@ -140,7 +140,7 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb if (!p || p->state == BR_STATE_DISABLED) goto drop; - if (!br_allowed_ingress(p->br, nbp_vlan_group(p), skb, &vid)) + if (!br_allowed_ingress(p->br, nbp_vlan_group_rcu(p), skb, &vid)) goto out; /* insert into forwarding database after filtering to avoid spoofing */ |