netdev - Re: [PATCH] veth: remove hardware checksum feature

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Date:	Thu, 08 Aug 2013 13:16:54 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] veth: remove hardware checksum feature

On Thu, 2013-08-08 at 12:43 -0700, Ben Greear wrote:

> So, the question is:  Is there any time that I *should* be mucking with
> skb->ip_summed when bridging pkts from one device to another on modern
> kernels?  I'm using the ptype_all hook to grab packets, and ndo_start_xmit
> to send them, in case that matters.


ndo_start_xmit() is likely bypassing the core network fallbacks.

You might try dev_hard_start_xmit() instead


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