netdev - RE: curent state of GSO over IPv6 tunnel

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Date:	Mon, 15 Sep 2014 10:19:27 +0000
From:	Yuval Mintz <Yuval.Mintz@...gic.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	netdev <netdev@...r.kernel.org>
Subject: RE: curent state of GSO over IPv6 tunnel

> > Hi,
> >
> > Tried running simple scenarios using ipv6/ipv6 via gre-tunnel [ip6_gre].
> >
> > When I've tried sniffing Tx traffic [tcpdump] I've noticed there were
> > no aggregations being set, i.e., only MTU-sized packets reached NIC.
> >
> > Looking at output of `ethtool -k', I can see `tx_gre_segmentation' is on.
> >
> > What's the current state of the feature? Is it feasible and I'm
> > missing some configuration, or is it yet an unsupported feature?
> 
> As far as I know, only bnx2x driver currently supports NETIF_F_GSO_GRE
> 

Hi Eric,

Might be true, but should this flag hold any sway over IPv6?
[Both at the moment and in general, i.e., if it does not would we need
an additional feature or simply extend the functionality so that it would
effect IPv6 as well?]

Thanks,
Yuval