netdev - Re: [PATCH net-next-2.6] net: Xmit Packet Steering (XPS)

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Message-ID: <4B0719E6.4060402@gmail.com>
Date:	Fri, 20 Nov 2009 23:36:22 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	therbert@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] net: Xmit Packet Steering (XPS)

David Miller a écrit :
> 
> I like this work.  But as you know it still needs a little bit
> more work :-)
> 
> Let's also pick a more decent name for the free function since
> tons of drivers are going to call this thing.  How about
> dev_kfree_tx_skb()? :-)
> 
> I see Jarek and you have come to a mutual understanding about the
> locking.  Since you need to change it anyways to fix the deadlock,
> what using a netchannel like scheme to do remote SKB queueing?
> 
> PAGE_SIZE queue arrays, lockless access to head and tail pointers, and
> if queue is full we local free.
> 
> I think that's a reasonable policy and the only detail to work out is
> to make sure we never race on the IPI send and thus miss processing
> the queue.
> 
> What do you think?
> 

Thats good ideas David, I'll work on them next week, and do benchmarks as well
before sending a new version.

Thanks
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