linux-kernel - Re: [PATCH] af_packet: Don't use skb after dev_queue

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Message-ID: <20100118210615.GD3157@del.dom.local>
Date:	Mon, 18 Jan 2010 22:06:15 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	Michael Breuer <mbreuer@...jas.com>,
	David Miller <davem@...emloft.net>, akpm@...ux-foundation.org,
	flyboy@...il.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] af_packet: Don't use skb after dev_queue_xmit()

On Mon, Jan 18, 2010 at 01:00:38PM -0800, Stephen Hemminger wrote:
> On Mon, 18 Jan 2010 15:56:45 -0500
> Michael Breuer <mbreuer@...jas.com> wrote:
> 
> > >> 2. The dropped tx packet (DHCP) is a bit harder to recreate, but it
> > >> still happens.
> > >>        
> 
> You might want to use tc filter rule to set priority of DHCP packets
> higher. This would cause them to be in a separate queue and eliminate
> the problem.
> 

But it looks like they are dropped in TX after passing a qdisc (and
wireshark).

Jarek P.
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