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Date: Tue, 07 Jul 2009 11:47:38 -0700
From: Rick Jones <rick.jones2@hp.com>
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To: Anton Vorontsov <avorontsov@ru.mvista.com>
Subject: Re: [PATCH] ucc_geth: Add support for skb recycling
References: <20090707183842.GA8425@oksana.dev.rtsoft.ru>
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Cc: netdev@vger.kernel.org, Li Yang <leoli@freescale.com>,
	Andy Fleming <afleming@freescale.com>,
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Anton Vorontsov wrote:
> We can reclaim transmitted skbs to use in the receive path, so-called
> skb recycling support.
> 
> Also reorder ucc_geth_poll() steps, so that we'll clean tx ring firstly,
> thus maybe reclaim some skbs for rx.

Admittedly, all the world is not TCP, but a big chunk is, so are you likely to 
have reference counts go to zero on the tx queue for anything other than small 
standalone TCP ACK segments?

rick jones

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rick Jones <rick.jones2@hp.com>
Subject: Re: [PATCH] ucc_geth: Add support for skb recycling
Date: Tue, 07 Jul 2009 11:47:38 -0700
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Cc: David Miller <davem@davemloft.net>,
	Andy Fleming <afleming@freescale.com>,
	Li Yang <leoli@freescale.com>, netdev@vger.kernel.org,
	linuxppc-dev@ozlabs.org
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Anton Vorontsov wrote:
> We can reclaim transmitted skbs to use in the receive path, so-called
> skb recycling support.
> 
> Also reorder ucc_geth_poll() steps, so that we'll clean tx ring firstly,
> thus maybe reclaim some skbs for rx.

Admittedly, all the world is not TCP, but a big chunk is, so are you likely to 
have reference counts go to zero on the tx queue for anything other than small 
standalone TCP ACK segments?

rick jones