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=-8.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 9B35FC43461 for ; Tue, 15 Sep 2020 09:34:08 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3AEEC2080C for ; Tue, 15 Sep 2020 09:34:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="O0iZEN0J" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3AEEC2080C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=secunet.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=JXX8PqmCnkrhJSilypACliV/hNnb91IZM38NuPM50Pg=; b=O0iZEN0JVNyEBBH2yqcAU8NWZ gh/yd1UhFZWvPjY/hwaOg4sD6iDoAF6WWP4SWmNnT0+KTA9+gLX1A6HNNUM2WcwEM0XeQNoLSP2hQ J7Mt7RcwUPNb3ZzICvS/m5OTakdXr1a6UwLB6xRdiOB8l5YNMdGcbus3LeK6cig7smBSPFA5mxtZX 5flHDtFtunZrZmOGIya7JH+whlk2lI4VUOwmCJ4yJBMwJkegKzkzMy6qC6JcHHvK+hGMl9A/RcOqn fWzBkM7tUbd3GiH/KcnX5PkrVcjX04k6EGBAhCaiQgTHJ8ZEIIxgk4OXgxSu6nL8KlEakOSLXIGXt yDC5zGbZQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kI7KL-0007y7-E1; Tue, 15 Sep 2020 09:32:41 +0000 Received: from a.mx.secunet.com ([62.96.220.36]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kI7KD-0007w0-Fq; Tue, 15 Sep 2020 09:32:35 +0000 Received: from localhost (localhost [127.0.0.1]) by a.mx.secunet.com (Postfix) with ESMTP id A9BE82009B; Tue, 15 Sep 2020 11:32:31 +0200 (CEST) X-Virus-Scanned: by secunet Received: from a.mx.secunet.com ([127.0.0.1]) by localhost (a.mx.secunet.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ryAbER4iKljS; Tue, 15 Sep 2020 11:32:31 +0200 (CEST) Received: from cas-essen-02.secunet.de (202.40.53.10.in-addr.arpa [10.53.40.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by a.mx.secunet.com (Postfix) with ESMTPS id 44B442006F; Tue, 15 Sep 2020 11:32:31 +0200 (CEST) Received: from mbx-essen-01.secunet.de (10.53.40.197) by cas-essen-02.secunet.de (10.53.40.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 15 Sep 2020 11:32:31 +0200 Received: from gauss2.secunet.de (10.182.7.193) by mbx-essen-01.secunet.de (10.53.40.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2044.4; Tue, 15 Sep 2020 11:32:30 +0200 Received: by gauss2.secunet.de (Postfix, from userid 1000) id 6E819318436D; Tue, 15 Sep 2020 11:32:30 +0200 (CEST) Date: Tue, 15 Sep 2020 11:32:30 +0200 From: Steffen Klassert To: lina.wang Subject: Re: [PATCH] xfrm:fragmented ipv4 tunnel packets in inner interface Message-ID: <20200915093230.GS20687@gauss3.secunet.de> References: <20200909062613.18604-1-lina.wang@mediatek.com> <20200915073006.GR20687@gauss3.secunet.de> <1600160722.5295.15.camel@mbjsdccf07> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1600160722.5295.15.camel@mbjsdccf07> User-Agent: Mutt/1.9.4 (2018-02-28) X-ClientProxiedBy: cas-essen-02.secunet.de (10.53.40.202) To mbx-essen-01.secunet.de (10.53.40.197) X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200915_053233_703338_6DF2724E X-CRM114-Status: GOOD ( 12.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Herbert Xu , Hideaki YOSHIFUJI , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Jakub Kicinski , Matthias Brugger , Alexey Kuznetsov , "David S . Miller" , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 15, 2020 at 05:05:22PM +0800, lina.wang wrote: > > Yes, DF bit is not set. ... > Those two packets are fragmented to one big udp packet, which payload is 1516B. > After getting rid of tunnel header, it is also a udp packet, which payload is > 1466 bytes.It didnot get any response for this packet.We guess it is dropped > by router. Because if we reduced the length, it got response. If the DF bit is not set, the router should fragment the packet. If it does not do so, it is misconfigured. Do you have access to that router? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel