netdev - Re: [PATCH net-next] net: skb_segment() provides list head and tail

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Message-Id: <20141006.003813.912754832034876042.davem@davemloft.net>
Date:	Mon, 06 Oct 2014 00:38:13 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	brouer@...hat.com, netdev@...r.kernel.org, therbert@...gle.com,
	hannes@...essinduktion.org, fw@...len.de, dborkman@...hat.com,
	jhs@...atatu.com, alexander.duyck@...il.com,
	john.r.fastabend@...el.com
Subject: Re: [PATCH net-next] net: skb_segment() provides list head and tail

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 03 Oct 2014 20:59:19 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Its unfortunate we have to walk again skb list to find the tail
> after segmentation, even if data is probably hot in cpu caches.
> 
> skb_segment() can store the tail of the list into segs->prev,
> and validate_xmit_skb_list() can immediately get the tail.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks Eric.
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