From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 30CBAA04DC; Sun, 22 Nov 2020 12:22:31 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id DFFD8FFA; Sun, 22 Nov 2020 12:22:28 +0100 (CET) Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by dpdk.org (Postfix) with ESMTP id F02F02AB for ; Sun, 22 Nov 2020 12:22:25 +0100 (CET) Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.nyi.internal (Postfix) with ESMTP id 988005C00AD; Sun, 22 Nov 2020 06:22:25 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Sun, 22 Nov 2020 06:22:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s=fm2; bh= H/kA/iJ7/utaFZuWHuZDlQI4CZ2fS+qZaZIZbq5TUdY=; b=AUcHLU4TVOf7/tat TittQjAhXUsExHwtGK2OKUc1KPSYHRn5hgTD5r+k8BSv7xgmL4MV9U06IicYVHx3 WqgKLa848D2dT0yQoGWzQteh1LI0W8S9zTmUSY6ieVknI2e7nZgoPKtKE5b5rgF/ TFjLeMlDE0JcpIFiCPog5+PJk8vnW8Yj4WnKAVFcmL9XCVdKX4TQ1gZAEWeH/lgW D1Lx0vrXSblLsp4F3Xu+NiEnrm0sRrYVCRlEEuaPlXfQXjCX0X4rj6Y23ul+bgE2 XUQrsbN7fkHIFtCRVflBuz/efXVhMOW3fWkHkpq5RjOmX6WK/nOXJsMRqStzqTeB 17vOGA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=H/kA/iJ7/utaFZuWHuZDlQI4CZ2fS+qZaZIZbq5TU dY=; b=kNy6lwDN+/AikyxYPZv/M1c1U96wY4uuOgLTosPiSRrcEolY2/Ei1ioB+ jd/YOO7k4gw1imU/t3hfeotNpOxuk3oOQNsFiAdSDxq8W4vsBolPavKrRgXz7FWw C6YbSRWOuEpR8UsnoSFMM/ud1GjCGWUCjH9iP6bvoDF6TXPRWu/ysexSnyZxjqwP RNsKyVlbd7ntHel7eGwYlXaap4/5DoYnL+xF+WN4Q4phtrBVtCzKTb7GHcM8KAA6 y5ZU3oHMReB6JZqEhjKN/WpvjKaILG/RCB4ncABokpNP0k8wkwpCDb9tsMWDoE1i UszoetB+c9y/FjfZoweAghI9ZglDA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrudeggedgvdelucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkfgjfhgggfgtsehtqhertddttdejnecuhfhrohhmpefvhhhomhgr shcuofhonhhjrghlohhnuceothhhohhmrghssehmohhnjhgrlhhonhdrnhgvtheqnecugg ftrfgrthhtvghrnhepkeethedtieevhfeigeejleegudefjeehkeekteeuveeiuedvveeu tdejveehveetnecukfhppeejjedrudefgedrvddtfedrudekgeenucevlhhushhtvghruf hiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehthhhomhgrshesmhhonhhjrghl ohhnrdhnvght X-ME-Proxy: Received: from xps.localnet (184.203.134.77.rev.sfr.net [77.134.203.184]) by mail.messagingengine.com (Postfix) with ESMTPA id 04262328005E; Sun, 22 Nov 2020 06:22:23 -0500 (EST) From: Thomas Monjalon To: Yicai Lu Cc: dev@dpdk.org, konstantin.ananyev@intel.com, zhoujingbin@huawei.com, chenchanghu@huawei.com, jerry.lilijun@huawei.com, haifeng.lin@huawei.com, guohongzhi1@huawei.com, wangyunjian@huawei.com Date: Sun, 22 Nov 2020 12:22:22 +0100 Message-ID: <7177305.MHKvZRkaxW@thomas> In-Reply-To: <1605706193-17192-1-git-send-email-luyicai@huawei.com> References: <1605706193-17192-1-git-send-email-luyicai@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Subject: Re: [dpdk-dev] [PATCH] ip_frag: recalculate data length of fragment X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Archived-At: List-Archive: 18/11/2020 14:29, Yicai Lu: > In some situations, we would get several ip fragments=EF=BC=8C which total > data length is less than minimum frame(64) and padding with zeros. > Examples: Second Fragment is "a0a1 a2a3 a4a5 a6a7 0000 0000 ..." > and Third Fragment is "a8a9 aaab acad aeaf b0b1 b2b3 ...". > And then, we would reassemble Second and Third Fragment like this > "a0a1 a2a3 a4a5 a6a7 0000 0000 ... a8a9 aaab acad aeaf b0b1 ...", > which is not correct! So, we need recalculate the data length=20 > of fragment to remove invalid padings(zero)! >=20 > Signed-off-by: Yicai Lu Please add a line "Fixes" to identify the root cause, it will help to know where to backport.