Subject: Re: [PATCH] ath5k : Fix correct padding
From: Johannes Berg <johannes@sipsolutions.net>
To: Michael Buesch <mb@bu3sch.de>
Cc: Benoit PAPILLAULT <benoit.papillault@free.fr>,
	linville@tuxdriver.com, linux-wireless@vger.kernel.org,
	ath5k-devel@lists.ath5k.org
In-Reply-To: <200812112258.25007.mb@bu3sch.de> (sfid-20081211_230212_942339_6F33AB66)
References: <49418D23.8060905@free.fr>  <200812112258.25007.mb@bu3sch.de>
	 (sfid-20081211_230212_942339_6F33AB66)
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Date: Thu, 11 Dec 2008 23:05:41 +0100
Message-Id: <1229033141.8081.87.camel@johannes.berg> (sfid-20081211_230623_051113_E95EC9BD)
Mime-Version: 1.0
Sender: linux-wireless-owner@vger.kernel.org


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On Thu, 2008-12-11 at 22:58 +0100, Michael Buesch wrote:
> On Thursday 11 December 2008 22:58:59 Benoit PAPILLAULT wrote:
> > Padding the 802.11 header to a multiple of 4 bytes needs to be done onl=
y
> > for DATA frames.
>=20
> Uhm, can you explain _why_ it's only needed for data frames?

Well, it's only _needed_ for data frames because the alignment is
something the IP stack needs. That doesn't answer the question, of
course, the answer to that would have to be something like "because the
hardware uses the same algorithm to insert the padding"

johannes

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