From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BD75C4CECE for ; Mon, 14 Oct 2019 09:04:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74D41207FF for ; Mon, 14 Oct 2019 09:04:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730588AbfJNJEg (ORCPT ); Mon, 14 Oct 2019 05:04:36 -0400 Received: from mx2.suse.de ([195.135.220.15]:60774 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730423AbfJNJEf (ORCPT ); Mon, 14 Oct 2019 05:04:35 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 46D04B498; Mon, 14 Oct 2019 09:04:34 +0000 (UTC) Message-ID: <1571043862.19529.9.camel@suse.com> Subject: Re: Possible bug with cdc_ether, triggers NETDEV WATCHDOG From: Oliver Neukum To: Adam Bennett , =?ISO-8859-1?Q?Bj=F8rn?= Mork Cc: Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org Date: Mon, 14 Oct 2019 11:04:22 +0200 In-Reply-To: <339e0633-6dd3-5c0f-0b6d-598848bf1d37@gmail.com> References: <3913c851-93f8-3d26-a578-f5a2c8b69aaa@gmail.com> <878spuxpu6.fsf@miraculix.mork.no> <339e0633-6dd3-5c0f-0b6d-598848bf1d37@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Am Mittwoch, den 09.10.2019, 09:27 -0400 schrieb Adam Bennett: > On 10/9/19 4:53 AM, Bjørn Mork wrote: > > This warning means that the gadget doesn't accept the packets we send > > it. There isn't much the host can do about that, except dropping > > packets on the floor. Which is why the warning is this loud. > > > > Would a firewall on either the linux host or the Pi Zero cause the same > problem (and message)? If a firewall discards a packet, it will not reach the transmit queue. Hence the answer to that question is negative. If other OSes get this device to work, we would need to know what they are doing differently. Can you get a trace from them and compare it to ours? Regards Oliver