netdev - Re: [PATCH v3] netfilter: SYNPROXY: fix process non tcp packet bug in {ipv4,ipv6}_synproxy

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Date:   Mon, 9 Oct 2017 13:09:06 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Lin Zhang <xiaolou4617@...il.com>
Cc:     kadlec@...ckhole.kfki.hu, fw@...len.de, davem@...emloft.net,
        kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v3] netfilter: SYNPROXY: fix process non tcp packet bug
 in {ipv4,ipv6}_synproxy_hook

On Fri, Oct 06, 2017 at 12:44:03AM +0800, Lin Zhang wrote:
> In function {ipv4,ipv6}_synproxy_hook we expect a normal tcp packet,
> but the real server maybe reply an icmp error packet related to the
> exist tcp conntrack, so we will access wrong tcp data.
> 
> For fix it, check for the protocol field and only process tcp traffic.

Applied, thanks. I have mangled the title slightly to:

        netfilter: SYNPROXY: skip non-tcp packet in {ipv4, ipv6}_synproxy_hook

For the record.