From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Schmitt Subject: Re: PROBLEM: GRE forwarding not working with 3.10.x, WCCPv2 and Cisco 7200 Router showing IP0 bad-hlen 4 in tcpdump Date: Fri, 18 Oct 2013 12:39:16 +0100 (BST) Message-ID: <1382096356.63655.YahooMailNeo@web172002.mail.ir2.yahoo.com> References: <1381912513.57737.YahooMailNeo@web172002.mail.ir2.yahoo.com> <1381942996.2045.135.camel@edumazet-glaptop.roam.corp.google.com> <1382007190.35868.YahooMailNeo@web172006.mail.ir2.yahoo.com> <1382017464.2045.149.camel@edumazet-glaptop.roam.corp.google.com> Reply-To: Peter Schmitt Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Cc: "netdev@vger.kernel.org" , Pravin B Shelar To: Eric Dumazet Return-path: Received: from nm1.bullet.mail.ird.yahoo.com ([77.238.189.58]:27258 "HELO nm1.bullet.mail.ird.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751481Ab3JRLjS convert rfc822-to-8bit (ORCPT ); Fri, 18 Oct 2013 07:39:18 -0400 In-Reply-To: <1382017464.2045.149.camel@edumazet-glaptop.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: Hi, > On Thursday, October 17, 2013 3:44 PM, Eric Dumazet wrote: > > On Thu, 2013-10-17 at 11:53 +0100, Peter Schmitt wrote: >> Hi, >> >> >> > >> > 3.10 is buggy (for ETH_P_WCCP support I mean), 3.11 has the probable >> > fix : >> > >> > commit 3d7b46cd20e300bd6989fb1f43d46f1b9645816e >> > ("ip_tunnel: push generic protocol handling to ip_tunnel > module.") >> > >> > The problem is 3.10 do not pull the extra 4 bytes of WCCP >> > >> > This is now properly done in iptunnel_pull_header() >> > >> >> First of all, many thanks for your help on this. >> >> I tried to apply the fix to the 3.10.16 sources, as I would like to >> stay with the long-term line. Unfortunately it does not apply, as >> there are a lot of dependencies on other patches. >> >> Do you think there will be a fix for the long-time 3.10 kernel line? >> Or can you guide me on how to apply this fix to the long-term kernel? > > 3.10 is right in the middle of GRE refactoring, and many bugs are in it. > > It might be very painful to get a complete list of patches to backport. thanks again. Yes I saw that there were lots of changes. Do you think there will be a fix for all the 3.10.x stable long term kernel users? Many of them might not be able to use some newer kernel easily or will this be a "won't fix"? Best regards, Peter