netdev - Re: [PATCH net-next] ipv6: gro: support sit protocol

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Date:	Wed, 04 Nov 2015 07:13:07 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Wolfgang Walter <linux@...m.de>
Cc:	David Miller <davem@...emloft.net>, Jerry Chu <hkchu@...gle.com>,
	JesseGross <jesse@...ira.com>, Tom Herbert <tom@...bertland.com>,
	netdev <netdev@...r.kernel.org>, kernel-team@...com,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: [PATCH net-next] ipv6: gro: support sit protocol

On Wed, 2015-11-04 at 15:09 +0100, Wolfgang Walter wrote:

> 
> Yes, maybe igb has a problem sending a gro-packet if it is an isatap in gre.

We might detect this condition properly from igb ndo_features_check
method.

It currently uses plain passthru_features_check()



> 
> igb has no problem sending gro-packets which are pure isatap or which are ipv4 
> (tcp/udp) in gre with 4.1.12 + these patches.
> 
> And it had no problem with 4.1.11 with isatap in gre.
> 
> Disabling gso for the interface does help.

My patch was aimed for 4.4, not sure about backports to old kernels...


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