netdev - Re: [PATCH net] tcp: don't annotate mark on control socket from tcp_v6_send

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Date:   Fri, 27 Jan 2017 10:34:20 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     pablo@...filter.org
Cc:     netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        eric.dumazet@...il.com
Subject: Re: [PATCH net] tcp: don't annotate mark on control socket from
 tcp_v6_send_response()

From: Pablo Neira Ayuso <pablo@...filter.org>
Date: Thu, 26 Jan 2017 22:56:21 +0100

> Unlike ipv4, this control socket is shared by all cpus so we cannot use
> it as scratchpad area to annotate the mark that we pass to ip6_xmit().
> 
> Add a new parameter to ip6_xmit() to indicate the mark. The SCTP socket
> family caches the flowi6 structure in the sctp_transport structure, so
> we cannot use to carry the mark unless we later on reset it back, which
> I discarded since it looks ugly to me.
> 
> Fixes: bf99b4ded5f8 ("tcp: fix mark propagation with fwmark_reflect enabled")
> Suggested-by: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>

Looks good to me and matches Eric's suggestion.

Applied, thanks Pablo.