netdev - Re: [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif

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Message-ID: <554CE93D.3090200@plumgrid.com>
Date:	Fri, 08 May 2015 09:50:05 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Eric Dumazet <eric.dumazet@...il.com>,
	Jesper Dangaard Brouer <brouer@...hat.com>
CC:	Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org
Subject: Re: [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>'

On 5/8/15 8:57 AM, Eric Dumazet wrote:
>
> I guess an ingress action can do better, by stealing the packet before
> hitting this point.

unfortunately not yet :(
We have spin_lock(&gact->tcf_lock); in tcf_gact,
so simple 'action drop' doesn't scale.
Shouldn't be hard to fix though.
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