Return-path: Received: from mail-wg0-f49.google.com ([74.125.82.49]:34093 "EHLO mail-wg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751806AbbGGLJV (ORCPT ); Tue, 7 Jul 2015 07:09:21 -0400 Received: by wgfr2 with SMTP id r2so9700549wgf.1 for ; Tue, 07 Jul 2015 04:09:20 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <559AD13B.7030105@thinktube.com> References: <55965CF8.20208@thinktube.com> <559AD13B.7030105@thinktube.com> Date: Tue, 7 Jul 2015 12:09:19 +0100 Message-ID: (sfid-20150707_130925_334211_7B77912D) Subject: Re: mesh support on rtl8192cu From: Richard Palethorpe To: Bruno Randolf Cc: Taehee Yoo , "linux-wireless@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, Jul 6, 2015 at 8:04 PM, Bruno Randolf wrote: > > On 07/06/2015 11:46 AM, Richard Palethorpe wrote: > > Bruno, that surprises me somewhat because I have got IBSS mode to work > > on kernel 4.0+. Are you using a slightly older kernel? > > I'm using kernel 3.18 with wireless drivers from backports in OpenWRT > CC, so it should be pretty recent... > > I wonder to what level did you verify the IBSS operation? > > I did get it to basically work as well, sometimes it works well, but > sometimes I get a packet loss of about 15-20% and outages of > connectivity for a while. This happens not always immediately, but > reproducibly after some time. Try pinging for an hour or so...? > > I traced it down to ARP replies being apparently "sent" on the device > (tcpdump shows it locally) but they don't make it onto the "air"... > > If you or anyone else can confirm ad-hoc mode really works, on some > version of the driver, I'll start to investigate more. > > bruno > I don't recall how long I tested it for before, but I have tested it again and now it is settling down to about 15-20% packet loss. arping has a lower packet loss of around 6%. So as you say, that probably means the handling of at least ARP frames/packets is broken in some way.