From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 128-177-27-249.ip.openhosting.com ([128.177.27.249]:46163 "EHLO jmalinen.user.openhosting.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753035Ab0IODDh (ORCPT ); Tue, 14 Sep 2010 23:03:37 -0400 Date: Tue, 14 Sep 2010 17:03:16 -1000 From: Jouni Malinen To: Ben Greear Cc: "linux-wireless@vger.kernel.org" Subject: Re: RFC: mac80211/ath9k: allow scanning single channel if other VIF is associated. Message-ID: <20100915030316.GB30253@jm.kir.nu> References: <4C8EB03D.7070808@candelatech.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <4C8EB03D.7070808@candelatech.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, Sep 13, 2010 at 04:14:05PM -0700, Ben Greear wrote: > This patch aims to decrease channel switching when there is at least one > interface associated. This should help multiple station interfaces co-exist > on the same hardware, especially in WPA mode. If I understood the change correctly, it would prevent running full scans when in associated state. That does not sound reasonable behavior and scanning should not cause an association to be lost. Did I miss something or what exactly is this trying to do? If you want to limit scans a single channel in some special use cases, you should be able to do that in user space, too, at least for the initial scan before connection. As a future optimization, we should somehow be able to merge scan requests from multiple VIFs into a single one, i.e., share the results from a single scan to multiple VIFs.. PS. It would be easier to comment on the changes if you were to inline them instead of attaching the file.. -- Jouni Malinen PGP id EFC895FA