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 D3A46A04BE; Mon, 7 Sep 2020 09:48:22 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B00F22BAB; Mon, 7 Sep 2020 09:48:22 +0200 (CEST) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) by dpdk.org (Postfix) with ESMTP id BE3E029AC for ; Mon, 7 Sep 2020 09:48:20 +0200 (CEST) Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.150]) by dispatch1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 61F962005A; Mon, 7 Sep 2020 07:48:20 +0000 (UTC) Received: from us4-mdac16-56.at1.mdlocal (unknown [10.110.48.199]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 5F58A800A3; Mon, 7 Sep 2020 07:48:20 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.12]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id E1C8A100052; Mon, 7 Sep 2020 07:48:19 +0000 (UTC) Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 7CD454005B; Mon, 7 Sep 2020 07:48:19 +0000 (UTC) Received: from [192.168.38.17] (10.17.10.39) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 7 Sep 2020 08:48:14 +0100 To: Michael Pfeiffer , Olivier Matz CC: References: <20200821113210.307175-1-michael.pfeiffer@tu-ilmenau.de> <20200901094755.561661-1-michael.pfeiffer@tu-ilmenau.de> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 j9UEwGA+omnOmqQMpeQTb/F9Ma2dYE+Hw4/t/1KVjxr3ehFaASvwR4fWJfO4e2l/Rk4rG6Yi 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X-TMASE-MatchedRID: 7ySqCuYCpfjmLzc6AOD8DfHkpkyUphL9q3wlNvsYBNhwh5cseF+Y9qFn ibRla2AIspBoX/RFsCUyMJ4ANEGmEI9HAuH8vHRAfid4LSHtIAMmKH/Kj46+VQg2kgWdt3qaTRa K1rKsT+iLrhTfkxEO5LxJlxKtuN6ETX7PJ/OU3vKDGx/OQ1GV8hFMgtPIAD6i+gtHj7OwNO2Ohz Oa6g8KrQyX89x6z2tOD+QbcyD0Cc+WYfkkPvkwnZp9t79mxD5UIaEiTsI+xSYkkB9ujAgeDTk2c ow+aHyC14QSZ5GSICCiPzggcLCTD+L59MzH0po2K2yzo9Rrj9wPoYC35RuihKPUI7hfQSp53zHe rOgw3HE= X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--3.785500-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.6.1012-25650.003 X-MDID: 1599464900-E1-w4_Fd3JQi Subject: Re: [dpdk-dev] [PATCH v2] net: calculate checksums for packets with IPv4 options 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" On 9/1/20 12:47 PM, Michael Pfeiffer wrote: > Currently, rte_ipv4_cksum() and rte_ipv4_udptcp_cksum() assume all IPv4 > headers have sizeof(struct rte_ipv4_hdr) bytes. This is not true for > those (rare) packets with IPv4 options. Thus, both IPv4 and TCP/UDP > checksums are calculated wrong. > > This patch fixes the issue by using the actual IPv4 header length from > the packet's IHL field. > > Signed-off-by: Michael Pfeiffer Reviewed-by: Andrew Rybchenko