netdev - Re: PROBLEM: GRE forwarding not working with 3.10.x, WCCPv2 and Cisco 7200 Router showing IP0 bad-hlen 4 in tcpdump

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Message-ID: <1382007190.35868.YahooMailNeo@web172006.mail.ir2.yahoo.com>
Date:	Thu, 17 Oct 2013 11:53:10 +0100 (BST)
From:	Peter Schmitt <peter.schmitt82@...oo.de>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Pravin B Shelar <pshelar@...ira.com>
Subject: Re: PROBLEM: GRE forwarding not working with 3.10.x, WCCPv2 and Cisco 7200 Router showing IP0 bad-hlen 4 in tcpdump

Hi,


> 
> 3.10 is buggy (for ETH_P_WCCP support I mean), 3.11 has the probable
> fix :
> 
> commit 3d7b46cd20e300bd6989fb1f43d46f1b9645816e
> ("ip_tunnel: push generic protocol handling to ip_tunnel module.")
> 
> The problem is 3.10 do not pull the extra 4 bytes of WCCP
> 
> This is now properly done in iptunnel_pull_header()
> 

First of all, many thanks for your help on this.

I tried to apply the fix to the 3.10.16 sources, as I would like to stay with the long-term line. Unfortunately it does not apply, as there are a lot of dependencies on other patches.

Do you think there will be a fix for the long-time 3.10 kernel line? Or can you guide me on how to apply this fix to the long-term kernel?

Best regards,
Peter

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