netdev - Re: [PATCH v3] net/sched: add ACT_CSUM action to update packets checksums

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Date:	Fri, 20 Aug 2010 01:43:21 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	baronchon@...m.org
Cc:	netdev@...r.kernel.org, hadi@...erus.ca
Subject: Re: [PATCH v3] net/sched: add ACT_CSUM action to update packets
 checksums

From: Grégoire Baron <baronchon@...m.org>
Date: Thu, 19 Aug 2010 01:10:35 +0200

> net/sched: add ACT_CSUM action to update packets checksums
> 
> ACT_CSUM can be called just after ACT_PEDIT in order to re-compute some
> altered checksums in IPv4 and IPv6 packets. The following checksums are
> supported by this patch:
>  - IPv4: IPv4 header, ICMP, IGMP, TCP, UDP & UDPLite
>  - IPv6: ICMPv6, TCP, UDP & UDPLite
> It's possible to request in the same action to update different kind of
> checksums, if the packets flow mix TCP, UDP and UDPLite, ...
> 
> An example of usage is done in the associated iproute2 patch.
> 
> Version 3 changes:
>  - remove useless goto instructions
>  - improve IPv6 hop options decoding
> 
> Version 2 changes:
>  - coding style correction
>  - remove useless arguments of some functions
>  - use stack in tcf_csum_dump()
>  - add tcf_csum_skb_nextlayer() to factor code
> 
> Acked-by: jamal <hadi@...erus.ca>
> Signed-off-by: Gregoire Baron <baronchon@...m.org>

Applied, thanks.
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