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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B6528C433F5 for ; Tue, 26 Apr 2022 14:04:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: MIME-Version:Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=oNYMdSdpCUasJHVOng5yuuHwR1liV1K/WVTQ48gh2kU=; b=TNr+ubrIE9EStUqOyiDpuSGg9M B2aDerrKCGGgpBkUy8+4dkr92cEOpeRLV4KLuboIvcsASAQF9qmGDxY24bVxOuFwUsOA71tLqHe3K zquVjKyN+5VNpDIkSdteb9Cy19HHWZBH4mvd8ngxGwefAYOfwCexziztYeATFsXoY0msDk/gsL4rQ k7UH5jfCfcMS4uhOTND5/852OSye5S2NoMGoHs88rhxUpcRb8siaDpCh/khMcSoW2ALOLcmxOTVdm BT6QLWN+YQyqmvN8ayqJKkNCf5F+oEIMZ/d8ike/3gi2rl0i9s/Peu94kz1pvWFR+lAhZnHiiGOh5 7UhmxZOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1njLmj-00EqQG-Nm; Tue, 26 Apr 2022 14:03:22 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1njLic-00Eob1-PQ for linux-arm-kernel@lists.infradead.org; Tue, 26 Apr 2022 13:59:09 +0000 From: Kurt Kanzenbach DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1650981538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=A2iZVgTNBSgaeoRbSzUYC9JbtTRd+xjYUfhrrkl8rhw=; b=O/ZgmagFIttM/Oj0vNa1VQ1CCLIjqaWKHzuEny15FQuDDOgW4b70p7rZhsXEgtnUckXWjj 1KpDVu0jLM9629gMOkygcFVSUx7kHR8N7E6hDovfHzOEoM3s2Odvw3IWqzWqGfZwwQrkvY 8DjK/TgMO+BU0xTgVOvackORvTWWqMI3EnR0noqUk/5QVe5e1F9iDrpaeHdqSm1vOxhJJS r7jFdfosahjEQ6yxFlUCDo9VhRAWQjFGCU9SGHu/GblBeGktcw8zVO5XqsIPPAv7NQAg0Y 7iYVCAwXWTREshV82/JcKcVdu2VXlirSA6ZZz6cBq/Fv3mvxY2tj5WT5z6AyuQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1650981538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=A2iZVgTNBSgaeoRbSzUYC9JbtTRd+xjYUfhrrkl8rhw=; b=CsPZZMnCYu/3XbqW8wNsn2dnOrwdU7n6otYY7wFkbPKv68VZIvA/28JBS+SbXOUVBmzHtU CJvZ18kAtTHeS6Ag== To: Tan Tee Min , Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S . Miller" , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Michael Sit Wei Hong , Xiaoliang Yang , Wong Vee Khee , Tan Tee Min , Ling Pei Lee , Bhupesh Sharma Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Voon Wei Feng , Song Yoong Siang , Ong@vger.kernel.org, Boon Leong , Tan Tee Min Subject: Re: [PATCH net 1/1] net: stmmac: disable Split Header (SPH) for Intel platforms In-Reply-To: <20220426074531.4115683-1-tee.min.tan@linux.intel.com> References: <20220426074531.4115683-1-tee.min.tan@linux.intel.com> Date: Tue, 26 Apr 2022 15:58:56 +0200 Message-ID: <8735i0ndy7.fsf@kurt> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220426_065907_022795_609A4FB7 X-CRM114-Status: UNSURE ( 9.34 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============2460568539923716789==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============2460568539923716789== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain Hi, On Tue Apr 26 2022, Tan Tee Min wrote: > Based on DesignWare Ethernet QoS datasheet, we are seeing the limitation > of Split Header (SPH) feature is not supported for Ipv4 fragmented packet. > This SPH limitation will cause ping failure when the packets size exceed > the MTU size. For example, the issue happens once the basic ping packet > size is larger than the configured MTU size and the data is lost inside > the fragmented packet, replaced by zeros/corrupted values, and leads to > ping fail. > > So, disable the Split Header for Intel platforms. Does this issue only apply on Intel platforms? Thanks, Kurt --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQJHBAEBCgAxFiEEvLm/ssjDfdPf21mSwZPR8qpGc4IFAmJn+qATHGt1cnRAbGlu dXRyb25peC5kZQAKCRDBk9HyqkZzgmn6D/9qeUHNLrQQtVKYURUbC/oNztnlmc3Z hwrp1SHvXu96xuyNmylbZEo2zADbG258zdU8ZD3NEBdHFRA4aL6f2B239dSyry1n xDi1COlTs/ve7G08MZalCchNpyrgPw3JR2PP4bSWIeqbP4C13C7dZEtsPjJs8tGH DxelFGu0xyfDxYpkS93ebV+cMvmwyhHDHHX3mbjP6Yj7V+g8XCS7ds22k1VLP5F0 CURBIhbl+f0XqFDc51M6wnUbmfD9nSGSuximRG1Exog1E/wrfadUOObHFFaQLBWr EcJdw0NEi/XnyK0G4xiP8hr1lfQmclpHD8aEMW9EprErePDqJQL596GkI3R4Ku5G IqkAieR62prU/Yopidw5M8EtH7FusL0zPsDXWp8jylqDUruN4ltbD1X6Cr4l9dKp xtXDFL73nj8/AYFKrTlrYc8isMnTxumkR6yu+N9jTgWLkAY17IJ0Bm80xKafqjAe xivpxueX2+/ZjnP4kYR1FzVC7CQTx81h1Cxjj9YFGWDTLlQ29vVvtV7a09zyGUOc qBlAYfPUHa0AQIEeDCQAJVvif005cnP87maoYPkU45oeL3GBS7Uykd/0Hfr/wpFw dZbLJnewfK848KvNsajR7omzWE8T34ApYJRIYIuJtfDuBBZhB/y/CgNgp1wi3LdL D7+1mOI7VgmBoQ== =YG8s -----END PGP SIGNATURE----- --=-=-=-- --===============2460568539923716789== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============2460568539923716789==--