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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 45924C43381 for ; Fri, 29 Mar 2019 00:10:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1A88F2184E for ; Fri, 29 Mar 2019 00:10:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728664AbfC2AKV (ORCPT ); Thu, 28 Mar 2019 20:10:21 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:59116 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727658AbfC2AKV (ORCPT ); Thu, 28 Mar 2019 20:10:21 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 7B8BD14D688B2; Thu, 28 Mar 2019 17:10:20 -0700 (PDT) Date: Thu, 28 Mar 2019 17:10:19 -0700 (PDT) Message-Id: <20190328.171019.1513054072749064700.davem@davemloft.net> To: aaro.koskinen@iki.fi Cc: joabreu@synopsys.com, alexandre.torgue@st.com, peppe.cavallaro@st.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, aaro.koskinen@nokia.com Subject: Re: [PATCH 0/6] net: stmmac: fix handling of oversized frames From: David Miller In-Reply-To: <20190327203540.1884-1-aaro.koskinen@iki.fi> References: <20190327203540.1884-1-aaro.koskinen@iki.fi> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 28 Mar 2019 17:10:20 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aaro Koskinen Date: Wed, 27 Mar 2019 22:35:34 +0200 > I accidentally had MTU size mismatch (9000 vs. 1500) in my network, > and I noticed I could kill a system using stmmac & 1500 MTU simply > by pinging it with "ping -s 2000 ...". > > While testing a fix I encountered also some other issues that need fixing. > > I have tested these only with enhanced descriptors, so the normal > descriptor changes need a careful review. I really want to see some stmmac developers review and/or test these changes. Thanks.