Re: [PATCH 2/4 net-next] tg3: provide frags as skb head

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From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Fri, 27 Apr 2012 12:34:49 +0200

> From: Eric Dumazet <edumazet@xxxxxxxxxx>
> This patch converts tg3 driver, one of our reference drivers, to use new
> build_skb() api in frag mode.
> Instead of using kmalloc() to allocate the memory block that will be
> used by build_skb() as skb->head, we use a page fragment.
> This is a followup of patch "net: allow skb->head to be a page fragment"
> This allows GRO, TCP coalescing, and splice() to be more efficient.
> Incidentally, this also removes SLUB slow path contention in kfree()
> Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>

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