linux-kernel - Re: [PATCH] bond: Don't set skb->queue

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Date:	Thu, 15 Aug 2013 18:35:30 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Tao Ma <tm@....ma>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH] bond: Don't set skb->queue_mapping in netpoll.

On Thu, 2013-08-15 at 16:36 +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt@...bao.com>
> 
> When we are using netpoll, we don't go through the normal
> transmit process. In this case, bond_select_queue is not called
> and qdisc_skb_cb(skb)->slave_dev_queue_mapping isn't set.
> 

Yes?

In netpoll_send_skb_on_dev() we have:

        if (skb_queue_len(&npinfo->txq) == 0 && !
netpoll_owner_active(dev)) {
                struct netdev_queue *txq;

                txq = netdev_pick_tx(dev, skb);
                ...

where netdev_pick_tx() will call ->ndo_select_queue().


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