From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: wireless vs. alignment requirements Date: Thu, 29 Nov 2007 16:28:34 -0800 Message-ID: <474F5932.1030103@zytor.com> References: <1195893216.4149.186.camel@johannes.berg> <20071124133200.GA27531@gondor.apana.org.au> <1195912176.4149.194.camel@johannes.berg> <20071124141319.GA27819@gondor.apana.org.au> <4748855C.5090103@linux-foundation.org> <474C50D7.5010901@zytor.com> <20071129131107.GC8487@gondor.apana.org.au> <474EFBEB.5000804@zytor.com> <20071130002621.GI23769@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Stephen Hemminger , Johannes Berg , dsd-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Herbert Xu Return-path: In-Reply-To: <20071130002621.GI23769-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org Herbert Xu wrote: > On Thu, Nov 29, 2007 at 09:50:35AM -0800, H. Peter Anvin wrote: >> Uhm, most cards affected *ARE* Ethernet cards, due to the bloody 14-byte >> header. > > Well most Ethernet drivers are using NET_IP_ALIGN which means that IP > stack gets aligned packets only. > > sky2 is the exception here, not the rule. > It is, but it's not unique. Several USB adapters have the same problem, for example. -hpa