Return-path: Received: from mail-ie0-f174.google.com ([209.85.223.174]:37729 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752021Ab2KLTkP (ORCPT ); Mon, 12 Nov 2012 14:40:15 -0500 Received: by mail-ie0-f174.google.com with SMTP id k13so9588871iea.19 for ; Mon, 12 Nov 2012 11:40:15 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20121112192859.GB6842@localhost> References: <1352746438-2404-1-git-send-email-thomas@cozybit.com> <20121112192859.GB6842@localhost> Date: Mon, 12 Nov 2012 11:40:15 -0800 Message-ID: (sfid-20121112_204020_465775_D17EF841) Subject: Re: [PATCH] ath5k: RX timestamp is reported at end of frame From: Sam Leffler To: Bob Copeland Cc: Adrian Chadd , Thomas Pedersen , ath5k-devel@lists.ath5k.org, jirislaby@gmail.com, mickflemm@gmail.com, mcgrof@qca.qualcomm.com, linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, Nov 12, 2012 at 11:28 AM, Bob Copeland wrote: > On Mon, Nov 12, 2012 at 11:17:36AM -0800, Adrian Chadd wrote: > [undid top-post] >> On 12 November 2012 10:53, Thomas Pedersen wrote: >> > This is true for at least AR5213, and shouldn't be different for other >> > ath5k PHYs. >> >> It may be; that's the problem. :/ > > I'll do some testing tonight with whatever cards I have around here to > see if we can at least get a better idea of which chipsets do what. >From my experience doing tdma on ath chipsets I know the timestamp is a snapshot of the tsf recorded by the dma engine when it writes the descriptor on dma completion. This was only legacy frames; don't know how things work for aggregate frames. > > -- > Bob Copeland %% www.bobcopeland.com > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html