netdev - Re: [PATCH net] core/dev: do not ignore dmac in dev_forward

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Message-ID: <5281EB99.5000104@6wind.com>
Date:	Tue, 12 Nov 2013 09:49:29 +0100
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	Alexei Starovoitov <ast@...mgrid.com>,
	"David S. Miller" <davem@...emloft.net>
CC:	Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
	Maciej Zenczykowski <zenczykowski@...il.com>
Subject: Re: [PATCH net] core/dev: do not ignore dmac in dev_forward_skb()

Le 11/11/2013 22:52, Alexei Starovoitov a écrit :
> commit 06a23fe31ca3
> ("core/dev: set pkt_type after eth_type_trans() in dev_forward_skb()")
> and refactoring 64261f230a91
> ("dev: move skb_scrub_packet() after eth_type_trans()")
>
> are forcing pkt_type to be PACKET_HOST when skb traverses veth.
>
> which means that ip forwarding will kick in inside netns
> even if skb->eth->h_dest != dev->dev_addr
>
> Revert offending commit
>
> Fixes: 06a23fe31ca3 ("core/dev: set pkt_type after eth_type_trans() in dev_forward_skb()")
> CC: Maciej Zenczykowski <zenczykowski@...il.com>
> CC: Nicolas Dichtel <nicolas.dichtel@...nd.com>
> Signed-off-by: Alexei Starovoitov <ast@...mgrid.com>
skb_scrub_packet() is also called after eth_type_trans() in ip_tunnel_rcv().
I do it to be consistent with dev_forward_skb(), thus it should be inverted too.
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