From: Johannes Berg <johannes@sipsolutions.net>
To: Christian Lamparter <chunkeey@googlemail.com>
Cc: linux-wireless@vger.kernel.org,
Christian Mehlis <mehlis@inf.fu-berlin.de>,
John W Linville <linville@tuxdriver.com>
Subject: Re: [PATCH] ar9170usb: fix panic triggered by undersized rxstream buffer
Date: Tue, 23 Mar 2010 18:59:00 -0700 [thread overview]
Message-ID: <1269395940.5646.3.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <201003232151.14531.chunkeey@googlemail.com>
On Tue, 2010-03-23 at 21:51 +0100, Christian Lamparter wrote:
> While ar9170's USB transport packet size is currently set to 8KiB,
> the PHY is capable of receiving AMPDUs with up to 64KiB.
> Such a large frame will be split over several rx URBs and
> exceed the previously allocated space for rx stream reconstruction.
>
> This patch increases the buffer size to 64KiB which is
> in fact the phy & rx stream designed size limit.
That's a pretty high order allocation, you may want to paged allocation
-- you'll end up doing a order 5 allocation here!
johannes
next prev parent reply other threads:[~2010-03-24 1:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-23 20:51 [PATCH] ar9170usb: fix panic triggered by undersized rxstream buffer Christian Lamparter
2010-03-24 1:59 ` Johannes Berg [this message]
2010-03-24 2:20 ` Zhu Yi
2010-03-24 12:30 ` Christian Lamparter
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