netdev - Re: [PATCH net-next] ipv4: fix tunneled VM traffic over hw VXLAN/GRE GSO NIC

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Message-ID: <CAJZOPZJsm08_EnGsitbx_qoHk28+TEnORJB__b9Zi284kcfkJw@mail.gmail.com>
Date:	Sun, 22 Dec 2013 15:25:53 +0200
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Wei-Chun Chao <weichunc@...mgrid.com>,
	Stephen Hemminger <stephen@...workplumber.org>
Cc:	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Joseph Gasparakis <joseph.gasparakis@...el.com>
Subject: Re: [PATCH net-next] ipv4: fix tunneled VM traffic over hw VXLAN/GRE
 GSO NIC

On Wed, Dec 18, 2013 at 9:02 PM, Wei-Chun Chao <weichunc@...mgrid.com> wrote:
> This is also seen on 'net'.
>
> VM to VM GSO traffic is broken if it goes through VXLAN or GRE
> tunnel and the physical NIC on the host supports hardware VXLAN/GRE
> GSO offload (e.g. bnx2x and next-gen mlx4).

Ack, this patch solves the breakage of VM traffic that is subject to
offloaded vxlan traffic which I see with latest kernels and the mlx4
patches I posted last week. So how we make progress here, is this
patch getting in or the alternative suggested down the thread by
Wei-Chun here http://patchwork.ozlabs.org/patch/303025/?
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