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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 07265C76195 for ; Sun, 21 Jul 2019 20:33:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF4D62085A for ; Sun, 21 Jul 2019 20:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726829AbfGUUde (ORCPT ); Sun, 21 Jul 2019 16:33:34 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:34742 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726022AbfGUUde (ORCPT ); Sun, 21 Jul 2019 16:33:34 -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 5480215265E2B; Sun, 21 Jul 2019 13:33:33 -0700 (PDT) Date: Sun, 21 Jul 2019 13:33:32 -0700 (PDT) Message-Id: <20190721.133332.437348204765200497.davem@davemloft.net> To: p.kosyh@gmail.com Cc: dsa@cumulusnetworks.com, shrijeet@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] vrf: make sure skb->data contains ip header to make routing From: David Miller In-Reply-To: <20190719081148.11512-1-p.kosyh@gmail.com> References: <213bada2-fe81-3c14-1506-11abf0f3ca22@cumulusnetworks.com> <20190719081148.11512-1-p.kosyh@gmail.com> 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]); Sun, 21 Jul 2019 13:33:33 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Peter Kosyh Date: Fri, 19 Jul 2019 11:11:47 +0300 > vrf_process_v4_outbound() and vrf_process_v6_outbound() do routing > using ip/ipv6 addresses, but don't make sure the header is available > in skb->data[] (skb_headlen() is less then header size). > > Case: > > 1) igb driver from intel. > 2) Packet size is greater then 255. > 3) MPLS forwards to VRF device. > > So, patch adds pskb_may_pull() calls in vrf_process_v4/v6_outbound() > functions. > > Signed-off-by: Peter Kosyh Applied and queued up for -stable, thanks.