batman-adv: clean nf state when removing protocol header
authorAntonio Quartulli <antonio@meshcoding.com>
Mon, 23 Dec 2013 00:28:05 +0000 (01:28 +0100)
committerAntonio Quartulli <antonio@meshcoding.com>
Sat, 28 Dec 2013 13:47:44 +0000 (14:47 +0100)
commit55883fd1048e09f5b6e1edaf0caf7e4f6f31f971
treecccd25e8e8b265c3f2eeb2f28336c33aea8ec505
parentca6630464454d74ae1d430e99007a1139f4a2aba
batman-adv: clean nf state when removing protocol header

If an interface enslaved into batman-adv is a bridge (or a
virtual interface built on top of a bridge) the nf_bridge
member of the skbs reaching the soft-interface is filled
with the state about "netfilter bridge" operations.

Then, if one of such skbs is locally delivered, the nf_bridge
member should be cleaned up to avoid that the old state
could mess up with other "netfilter bridge" operations when
entering a second bridge.
This is needed because batman-adv is an encapsulation
protocol.

However at the moment skb->nf_bridge is not released at all
leading to bogus "netfilter bridge" behaviours.

Fix this by cleaning the netfilter state of the skb before
it gets delivered to the upper layer in interface_rx().

Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
net/batman-adv/soft-interface.c