From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264075AbUCZQgE (ORCPT ); Fri, 26 Mar 2004 11:36:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264083AbUCZQgE (ORCPT ); Fri, 26 Mar 2004 11:36:04 -0500 Received: from amalthea.dnx.de ([193.108.181.146]:24006 "EHLO amalthea.dnx.de") by vger.kernel.org with ESMTP id S264075AbUCZQgA (ORCPT ); Fri, 26 Mar 2004 11:36:00 -0500 Date: Fri, 26 Mar 2004 17:35:43 +0100 From: Robert Schwebel To: David Brownell Cc: linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [ANNOUNCE] RNDIS Gadget Driver Message-ID: <20040326163543.GD16461@pengutronix.de> References: <20040325221145.GJ10711@pengutronix.de> <20040326115947.GA22185@outpost.ds9a.nl> <20040326121928.GC16461@pengutronix.de> <4064530C.5030308@pacbell.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4064530C.5030308@pacbell.net> User-Agent: Mutt/1.4i X-Scan-Signature: bdb6ba8b9184e0b6a72479d1f42a9fb8 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 26, 2004 at 07:58:04AM -0800, David Brownell wrote: > >>>- .bDeviceClass = DEV_CONFIG_CLASS, > >>>+ .bDeviceClass = 0x02, > >> > >>Is this wise? > > > > > >Until now DEV_CONFIG_CLASS was 0xFF, which results in Windows getting > >hickup. If you directly set this to 0x02 (Network Device) Win is happy. > > Actually I suspect setting it to USB_CLASS_COMM would be preferred, in > RNDIS-specific config descriptors.... We have tried that, Windows does not like it. The only constellation where it worked was setting the device descriptor's bConfigClass=0x02. RNDIS is a sensitive beast. Do one bit different results in that uggly "Error 10" message on the Windows side. We saw it when we started with the driver, we saw it when the driver was half way finished and we will see it again if somebody tweaks the driver without exactly knowing what the guys at Microsoft smoked when they designed that protocol :-) Robert -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hornemannstraße 12, 31137 Hildesheim, Germany Phone: +49-5121-28619-0 | Fax: +49-5121-28619-4