Return-path: Received: from mail-wi0-f177.google.com ([209.85.212.177]:41323 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756011Ab3AYMK3 (ORCPT ); Fri, 25 Jan 2013 07:10:29 -0500 Received: by mail-wi0-f177.google.com with SMTP id hm2so249089wib.4 for ; Fri, 25 Jan 2013 04:10:28 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <1537149.hyND0EvR7A@sylvesterjr.pats.ua.ac.be> References: <1731354.xZITKB59tC@sylvesterjr.pats.ua.ac.be> <1537149.hyND0EvR7A@sylvesterjr.pats.ua.ac.be> Date: Fri, 25 Jan 2013 13:05:12 +0100 Message-ID: (sfid-20130125_131033_350265_8048FB74) Subject: Re: Unable to get RTS/CTS working in rt2800 From: Helmut Schaa To: Erwin Van de Velde Cc: linux-wireless@vger.kernel.org, rt2x00 Users List Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, Jan 25, 2013 at 11:45 AM, Erwin Van de Velde wrote: > On Friday 25 January 2013 09:42:31 Helmut Schaa wrote: >> On Thu, Jan 24, 2013 at 4:58 PM, Erwin Van de Velde >> >> wrote: >> > In a test setup with 802.11a/n a colleague and I tried enabling > RTS/CTS. >> > The only thing we got however was a CTS to self. RTS threshold was > 1000B, >> > packet size 1400B. >> >> Did you use 11n aggregation? > > Yes, but afterwards we also tried it with 802.11a, same result. Bad. I expected this to work ... >> > We looked for other options but did not find anything >> > helpful, what else can we try to enable RTS/CTS? >> >> Yup, there are several issues there: >> - The hw ignores RTS thresholds for AMPDUs AFAIK >> - HT protection always uses CTS-to-self (hardcoded in driver in >> rt2800_config_ht_opmode) >> >> I don't think any other driver allows to configure if RTS-CTS or >> CTS-to-self should be used? >> You can easily enforce RTS-CTS for 11n transmissions by changing >> rt2800_config_ht_opmode. > > Where do I configure that? Is it in the source code or is it a kernel > module parameter? You'd need to change the source code of rt2800_config_ht_opmode. Helmut