Return-path: Received: from mail-vw0-f46.google.com ([209.85.212.46]:59993 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752465Ab1CKUIz convert rfc822-to-8bit (ORCPT ); Fri, 11 Mar 2011 15:08:55 -0500 Received: by vws1 with SMTP id 1so961969vws.19 for ; Fri, 11 Mar 2011 12:08:55 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: From: Luis Correia Date: Fri, 11 Mar 2011 20:08:15 +0000 Message-ID: Subject: Re: rt2800usb (rt2x00) in ad-hoc mode stalls when transferring large amount of data To: Juan Carlos Garza Cc: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi On Fri, Mar 11, 2011 at 20:04, Juan Carlos Garza wrote: > Hello > > I have a Ralink 3071 usb device (Bus 002 Device 003: ID 07b8:3071 > D-Link Corp. 802.11n/b/g Mini Wireless LAN USB2.0 Adapter). > I am using the mac80211 driver by compiling the compat-wireless > tarball from yesterday (10 March). I cross compile it with the 2.6.24 > kernel in a Montavista distribution (and also with 2.6.27 in Fedora) > > It works pretty good in AP mode using HostAPD and DCHP and I get > relative good transfer rates (up to 3.5 MBytes per second). > > My problems are with Ad-Hoc connections. I can configure the Ad-Hoc > connection, for example: > > iwconfig wlan0 mode ad-hoc > iwconfig wlan0 essid my_ad_hoc_nt > iwconfig wlan0 key 1122334455 > ifconfig wlan0 192.168.111.44 up > > It works and I connect to it on the other end (a windows machine with > a compatible static ip address), however, it only works for doing > small data transfer rate things like browsing through the directories > of a shared folder or retrieving web pages from a web server. When I > try to do something like transferring a 500 MByte file, it starts > transferring, reaches a peak and then it drops to 0 again. After that, > the file is no longer transferred and I cannot do anything else (can't > ping). > > Is this a known issue? Any ideas? > > Juan Carlos > -- > 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 > keep in mind that current (and by design) ad-hoc connections max out at 11Mb. there may be some buffer bottleneck involved. but I'm not a very good expert on this subject. Luis Correia