From: David Miller <davem@davemloft.net>
To: yi.zhu@intel.com
Cc: mel@csn.ul.ie, reinette.chatre@intel.com, elendil@planet.nl,
Larry.Finger@lwfinger.net, linville@tuxdriver.com,
penberg@cs.helsinki.fi, linux-kernel@vger.kernel.org,
linux-wireless@vger.kernel.org,
ipw3945-devel@lists.sourceforge.net, akpm@linux-foundation.org,
cl@linux-foundation.org, assaf.krauss@intel.com,
johannes@sipsolutions.net, mohamed.abbas@intel.com,
netdev@vger.kernel.org
Subject: Re: alloc skb based on a given data buffer
Date: Tue, 15 Sep 2009 01:33:21 -0700 (PDT) [thread overview]
Message-ID: <20090915.013321.07006714.davem@davemloft.net> (raw)
In-Reply-To: <1253003420.7549.51.camel@debian>
From: Zhu Yi <yi.zhu@intel.com>
Date: Tue, 15 Sep 2009 16:30:20 +0800
> This way, device drivers can allocate the Rx buffers with their own size
> and alignment requirement. i.e. do an order-1 page allocation directly
> with free_pages() in the iwlagn driver for a 256 bytes aligned 8K Rx
> buffer. After DMA is finished, drivers can use the above function to
> assemble an skb based on the Rx buffer. It should resolve the problem
> for requiring an order-2 allocation by alloc_skb() in the first place.
You can create paged RX skbs just like drivers such as niu.c
and others already do, there is no need for special APIs for
this.
next prev parent reply other threads:[~2009-09-15 8:33 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-06 7:40 iwlagn: order 2 page allocation failures Frans Pop
2009-09-06 8:14 ` Pekka Enberg
2009-09-06 8:28 ` Frans Pop
2009-09-06 8:35 ` Pekka Enberg
2009-09-08 10:54 ` Mel Gorman
2009-09-08 11:11 ` Pekka Enberg
2009-09-08 14:17 ` John W. Linville
2009-09-08 14:59 ` Larry Finger
2009-09-09 15:04 ` Mel Gorman
2009-09-09 15:59 ` Frans Pop
2009-09-09 16:55 ` Mel Gorman
2009-09-09 17:19 ` Frans Pop
2009-09-16 14:36 ` Frans Pop
2009-09-16 15:02 ` Mel Gorman
2009-09-16 15:37 ` Frans Pop
2009-09-16 16:26 ` reinette chatre
2009-09-09 20:05 ` reinette chatre
2009-09-10 1:48 ` Frans Pop
2009-09-10 9:02 ` Mel Gorman
2009-09-10 18:15 ` reinette chatre
2009-09-10 18:43 ` Frans Pop
2009-09-10 18:50 ` reinette chatre
2009-09-11 8:45 ` Mel Gorman
2009-09-11 16:14 ` reinette chatre
2009-09-10 21:14 ` reinette chatre
2009-09-11 8:47 ` Mel Gorman
2009-09-14 3:01 ` Zhu Yi
2009-09-14 13:06 ` Mel Gorman
2009-09-15 8:30 ` alloc skb based on a given data buffer Zhu Yi
2009-09-15 8:33 ` David Miller [this message]
2009-09-15 8:57 ` Zhu Yi
2009-09-15 9:09 ` David Miller
2009-09-15 9:15 ` Zhu Yi
2009-09-15 15:30 ` Johannes Berg
2009-09-15 21:16 ` David Miller
2009-09-19 5:56 ` Johannes Berg
2009-09-14 15:42 ` iwlagn: order 2 page allocation failures Christoph Lameter
2009-09-14 17:59 ` Mel Gorman
2009-09-14 18:04 ` Christoph Lameter
2009-09-10 8:18 ` Pekka Enberg
2009-09-10 12:34 ` Mel Gorman
2009-09-10 12:39 ` Pekka Enberg
2009-09-10 12:58 ` Mel Gorman
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