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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1382017464.2045.149.camel@edumazet-glaptop.roam.corp.google.com>
Date:	Thu, 17 Oct 2013 06:44:24 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Peter Schmitt <peter.schmitt82@...oo.de>
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

On Thu, 2013-10-17 at 11:53 +0100, Peter Schmitt wrote:
> 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?

3.10 is right in the middle of GRE refactoring, and many bugs are in it.

It might be very painful to get a complete list of patches to backport.



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html