netdev - Re: [PATCH 2/3] NET: [CORE] Stack changes to add multiqueue hardware support API

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Date:	Thu, 28 Jun 2007 18:31:24 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>
CC:	davem@...emloft.net, netdev@...r.kernel.org, jeff@...zik.org,
	auke-jan.h.kok@...el.com, hadi@...erus.ca
Subject: Re: [PATCH 2/3] NET: [CORE] Stack changes to add multiqueue hardware
 support API

PJ Waskiewicz wrote:
> Updated: Fixed allocation of subqueues in alloc_netdev_mq() to
> allocate all subqueues, not num - 1.
>
> Added checks for netif_subqueue_stopped() to netpoll,
> pktgen, and software device dev_queue_xmit().  This will ensure
> external events to these subsystems will be handled correctly if
> a subqueue is shut down.
>
> Add the multiqueue hardware device support API to the core network
> stack.  Allow drivers to allocate multiple queues and manage them
> at the netdev level if they choose to do so.
>
> Added a new field to sk_buff, namely queue_mapping, for drivers to
> know which tx_ring to select based on OS classification of the flow.
>
> Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
>   

Acked-by: Patrick McHardy <kaber@...sh.net>

skb->iif and queue_mapping should probably go somewhere near
the other shaping stuff and unsigned int seems to be a better
choice for egress_subqueue_count, but I can take care of that
when this patch is in Dave's tree.




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