netdev - Re: [PATCH net] ipv6: introduce tcp_v6

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Message-ID: <CAHA+R7NLTKz1O3CJLoH9xn2u2J-k2XU_j6CuAkcCZbcayOhyGA@mail.gmail.com>
Date:	Fri, 17 Oct 2014 17:02:04 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] ipv6: introduce tcp_v6_iif()

On Fri, Oct 17, 2014 at 9:17 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> From: Eric Dumazet <edumazet@...gle.com>
>
> Commit 971f10eca186 ("tcp: better TCP_SKB_CB layout to reduce cache line
> misses") added a regression for SO_BINDTODEVICE on IPv6.
>
> This is because we still use inet6_iif() which expects that IP6 control
> block is still at the beginning of skb->cb[]
>
> This patch adds tcp_v6_iif() helper and uses it where necessary.
>
> Because __inet6_lookup_skb() is used by TCP and DCCP, we add an iif
> parameter to it.
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Fixes: 971f10eca186 ("tcp: better TCP_SKB_CB layout to reduce cache line misses")

As I already explained in previous reply, this is probably the best solution
for net, so:

Acked-by: Cong Wang <cwang@...pensource.com>
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