Return-path: Received: from mail-ob0-f173.google.com ([209.85.214.173]:55770 "EHLO mail-ob0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934462Ab3FSQ5q convert rfc822-to-8bit (ORCPT ); Wed, 19 Jun 2013 12:57:46 -0400 Received: by mail-ob0-f173.google.com with SMTP id wc20so6314322obb.32 for ; Wed, 19 Jun 2013 09:57:45 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20130619164227.GC4784@cmadams.net> References: <20130619160911.GB4784@cmadams.net> <51C1DDEB.3090701@lwfinger.net> <20130619164227.GC4784@cmadams.net> Date: Wed, 19 Jun 2013 18:57:45 +0200 Message-ID: (sfid-20130619_185751_579944_9097F2B0) Subject: Re: BCM4331 deauthenticates every five minutes From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= To: Larry Finger , b43-dev@lists.infradead.org, linux-wireless Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: 2013/6/19 Chris Adams : > Once upon a time, Larry Finger said: >> What type of encryption are you using? If it is a re-keying type >> such as TKIP, what is the interval? You should find that on the >> setup page of the access point. > > I don't have access to the management of this particular AP (work > environment), but "iw dev wlan0 scan dump" says CCMP. I think some key interval applies not only to the TKIP, but also other keys. For example GTK (which is part of WPA2 with it's 4-way handshake). GTK is Group Temporal Key, and Broadcom's router have a setting called "GTK rotation interval". I guess PMK/PTK also can have some intervals. I don't know how/if driver can be responsible for such reconnects. Over all it just TX and RX packets, right? Loosing a signal is something different, that can be related to the driver's bug. But as this happens every 5 minutes... I don't know. Did you try connecting to this AP with any other card and using similar kernel? I wonder if this can be some supplicant / mac80211 stack issue... -- Rafał