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=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 CA12DC4363C for ; Sun, 4 Oct 2020 21:29:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 835F32078D for ; Sun, 4 Oct 2020 21:29:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726442AbgJDV32 (ORCPT ); Sun, 4 Oct 2020 17:29:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726313AbgJDV32 (ORCPT ); Sun, 4 Oct 2020 17:29:28 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F718C0613CE for ; Sun, 4 Oct 2020 14:29:28 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (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 168981277E5AC; Sun, 4 Oct 2020 14:12:37 -0700 (PDT) Date: Sun, 04 Oct 2020 14:29:22 -0700 (PDT) Message-Id: <20201004.142922.2271238418704854925.davem@davemloft.net> To: martin.varghese@nokia.com Cc: gnault@redhat.com, kuba@kernel.org, netdev@vger.kernel.org, dcaratti@redhat.com Subject: Re: [PATCH net] net/core: check length before updating Ethertype in skb_mpls_{push,pop} From: David Miller In-Reply-To: References: <71ec98d51cc4aab7615061336fb1498ad16cda30.1601667845.git.gnault@redhat.com> X-Mailer: Mew version 6.8 on Emacs 27.1 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 [2620:137:e000::1:9]); Sun, 04 Oct 2020 14:12:37 -0700 (PDT) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: "Varghese, Martin (Nokia - IN/Bangalore)" Date: Sun, 4 Oct 2020 14:50:58 +0000 > Is this check redundant. I believe Openvswitch already takes care of it ? Openvswitch isn't the only user of these skb_mpls_*() helpers.