Return-path: Received: from he.sipsolutions.net ([78.46.109.217]:38756 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757203Ab0HEO4q (ORCPT ); Thu, 5 Aug 2010 10:56:46 -0400 Subject: RE: Capturing packets with bad FCS in monitor mode From: Johannes Berg To: ABM Musa Cc: 'Daniel Haid' , linux-wireless@vger.kernel.org In-Reply-To: <475A8455ABBB4AD79E2B0AD03B1F69B9@personal> References: <201008051614.11546.d.haid@gogi.tv> <475A8455ABBB4AD79E2B0AD03B1F69B9@personal> Content-Type: text/plain; charset="UTF-8" Date: Thu, 05 Aug 2010 16:56:41 +0200 Message-ID: <1281020201.4058.4.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, 2010-08-05 at 09:43 -0500, ABM Musa wrote: > Packets with crc error can be captured using corresponding flag of iw. > > iw phy phy0 interface add wlan0 type monitor flags fcsfail > > However, there is also option for plcpfail flag but I never obtained any > packet with plcpfail using this flag. Any info about that will be helpful. It only works with very few drivers (b43) and also had issues -- you'll probably need this patch: http://johannes.sipsolutions.net/patches/kernel/all/LATEST/NNN-mac80211-no-rate-check.patch johannes