netdev - Re: [BUG] ipv6 and TSO on GRE is broken

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Message-ID: <20130502083245.GD31654@trivini.no>
Date:	Thu, 2 May 2013 10:32:45 +0200
From:	Berge Schwebs Bjørlo <berge@...vini.no>
To:	Pravin Shelar <pshelar@...ira.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	netdev <netdev@...r.kernel.org>,
	"Steinar H. Gunderson" <sesse@...gle.com>
Subject: Re: [BUG] ipv6 and TSO on GRE is broken

On Thu, May 02, 2013 at 01:00:54AM -0700, Pravin Shelar wrote:
> On Thu, May 2, 2013 at 12:02 AM, Pravin Shelar <pshelar@...ira.com> wrote:
>> I forgot to add gre gso handler to inet6 offloads list.
>>
>> I will send out patch soon.
> nevermind, I guess you were talking abt ipv6 over gre-ipv4 device, I will
> check the code.

I'm not sure if we're talking about the same issue, but I'm experiencing
massive packet drops with outbound IPv6 traffic with a GREv4 tunnel with IPv6
traffic on the inside. Inbound traffic seems fine, and IPv4 inside the tunnel
is fine in both directions.

First observed when upgrading to 3.9 the other day. 3.8 was fine. git bisect
and a kernel-recompile-reboot-dance points to commit
68c331631143f5f039baac99a650e0b9e1ea02b6 as the culprit.

Cheers,
-Berge

-- 
Berge Schwebs Bjørlo
Alegría!
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