netdev - Re: [PATCH net] net/packet: Fix Tx queue selection for AF

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Date:   Fri, 14 Jul 2017 08:20:47 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     ivan.briano@...el.com
Cc:     netdev@...r.kernel.org, jesus.sanchez-palencia@...el.com,
        vinicius.gomes@...el.com, andre.guedes@...el.com
Subject: Re: [PATCH net] net/packet: Fix Tx queue selection for AF_PACKET

From: Iván Briano <ivan.briano@...el.com>
Date: Thu, 13 Jul 2017 09:46:58 -0700

> When PACKET_QDISC_BYPASS is not used, Tx queue selection will be done
> before the packet is enqueued, taking into account any mappings set by
> a queuing discipline such as mqprio without hardware offloading. This
> selection may be affected by a previously saved queue_mapping, either on
> the Rx path, or done before the packet reaches the device, as it's
> currently the case for AF_PACKET.
> 
> In order for queue selection to work as expected when using traffic
> control, there can't be another selection done before that point is
> reached, so move the call to packet_pick_tx_queue to
> packet_direct_xmit, leaving the default xmit path as it was before
> PACKET_QDISC_BYPASS was introduced.
> 
> A forward declaration of packet_pick_tx_queue() is introduced to avoid
> the need to reorder the functions within the file.
> 
> Fixes: d346a3fae3ff ("packet: introduce PACKET_QDISC_BYPASS socket option")
> Signed-off-by: Iván Briano <ivan.briano@...el.com>

Applied, thanks.