netdev - Re: [PATCH v3] net: add a sysctl to reflect the fwmark on replies

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Message-Id: <20140407.200638.1315731010863669193.davem@davemloft.net>
Date:	Mon, 07 Apr 2014 20:06:38 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	lorenzo@...gle.com
Cc:	netdev@...r.kernel.org, ja@....bg, hannes@...essinduktion.org
Subject: Re: [PATCH v3] net: add a sysctl to reflect the fwmark on replies

From: Lorenzo Colitti <lorenzo@...gle.com>
Date: Tue,  8 Apr 2014 08:58:51 +0900

> Kernel-originated IP packets that have no user socket associated
> with them (e.g., ICMP errors and echo replies, TCP RSTs, etc.)
> are emitted with a mark of zero. Add a sysctl to make them have
> the same mark as the packet they are replying to.
> 
> This allows an administrator that wishes to do so to use
> mark-based routing, firewalling, etc. for these replies by
> marking the original packets inbound.
> 
> Tested using user-mode linux:
>  - ICMP/ICMPv6 echo replies and errors.
>  - TCP RST packets (IPv4 and IPv6).
> 
> Signed-off-by: Lorenzo Colitti <lorenzo@...gle.com>

This is a new feature, which should be targetted at net-next, which
is closed at this time.

Please resubmit this when the net-next tree opens back up, and
properly tag your subject line with "net-next" so that it is clear
what tree your change is targetted at.

Thanks.
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