Return-path: Received: from mail-fx0-f216.google.com ([209.85.220.216]:44079 "EHLO mail-fx0-f216.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752997AbZFKOmh convert rfc822-to-8bit (ORCPT ); Thu, 11 Jun 2009 10:42:37 -0400 Received: by fxm12 with SMTP id 12so17059fxm.37 for ; Thu, 11 Jun 2009 07:42:38 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1244714367.4706.8.camel@johannes.local> References: <3ace41890906081659o23cb9ee1sd82ca4fc28a3793d@mail.gmail.com> <69e28c910906090426l4c383665rdc4bffc501085661@mail.gmail.com> <3ace41890906092018o76b0ee62n91819779a8ccd6db@mail.gmail.com> <1244619027.18481.55.camel@johannes.local> <3ace41890906100639gb800904td06d86efef90e656@mail.gmail.com> <69e28c910906100822q6eae8b29p2381220b23b4f4b1@mail.gmail.com> <1244648968.4178.5.camel@johannes.local> <3ace41890906102008u421f5669m3cf23a437f63d278@mail.gmail.com> <1244714367.4706.8.camel@johannes.local> From: =?ISO-8859-1?Q?G=E1bor_Stefanik?= Date: Thu, 11 Jun 2009 16:42:18 +0200 Message-ID: <69e28c910906110742n5abe1486n12f5f586999d2f26@mail.gmail.com> Subject: Re: Testing AP mode with WLAN-USB-Stick: How to obtain? To: Johannes Berg Cc: Hin-Tak Leung , Stefan Steuerwald , linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Jun 11, 2009 at 11:59 AM, Johannes Berg wrote: > On Thu, 2009-06-11 at 04:08 +0100, Hin-Tak Leung wrote: > >> For the sake of being pedantic, can I have some reference (if only for >> those sleepless nights for lack of boring reading materials...)? Maybe >> ?I won't understand it anyway, but maybe somebody else who is >> listening in to this exchange can chip in. >> I have a 1300-page pdf supposedly the ?802.11 2007 standard I >> downloaded some months ago through one of the wikipedia links, I think >> (somewhere under http://standards.ieee.org/) ... chapter 11 is MLME >> and section 11.2 is power management, which in turn is split into two >> sub-sections about power management in infrastructure nework and IBSS >> mode. I found a particular sentence in section 11.2.1. which sounds a >> bit like what you are saying (except with some cryptic acronyms!): >> >> ------ >> If any STA in its BSS is in PSmode, the AP shall buffer all broadcast >> and multicast MSDUs and deliver them to all STAs immediately >> following the next Beacon frame containing a DTIM transmission. >> ------ >> >> Have I found the right place to read up on such things, or there are >> other documents, etc (more detailed, or more "layman")? > > Yes, that's the right place. > >> On the broken-AP mode in the zd1211 vendor driver - presumably Zydas >> did not wrote that specially for linux, but just modified/adapted from >> their windows driver? So I guess windows users of zd1211 (or other USB >> sticks) are used to being able to do such things and assume whatever >> it does is normal? It just crossed my mind that if some off-spec >> behavior is sufficiently popular on windows (e.g. if >> connection-sharing requires AP mode to work and won't take IBSS), >> sometimes the spec gets modified to ratify a formerly barbaric >> off-spec behavior. > > I don't think windows supports being an AP at all, afaict it's > connection sharing will create an IBSS. > > johannes > That's not what I meant (though Windows can operate in AP mode using the utility provided for Zydas cards), but rather using the Linux machine to give Internet connection to a Windows machine. AFAIK Windows will never use an IBSS connection for Internet access purposes, and only allows Internet through wireless if connected to an AP. -- Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)