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GET /api/patches/139641/?format=api
{ "id": 139641, "url": "https://patches.dpdk.org/api/patches/139641/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/20240423090813.94110-1-mattias.ronnblom@ericsson.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20240423090813.94110-1-mattias.ronnblom@ericsson.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20240423090813.94110-1-mattias.ronnblom@ericsson.com", "date": "2024-04-23T09:08:13", "name": "net/af_packet: cache align Rx/Tx structs", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "33681fe36bf6ea91120425d5df6b9b4afdf2ca37", "submitter": { "id": 1077, "url": "https://patches.dpdk.org/api/people/1077/?format=api", "name": "Mattias Rönnblom", "email": "mattias.ronnblom@ericsson.com" }, "delegate": { "id": 319, "url": "https://patches.dpdk.org/api/users/319/?format=api", "username": "fyigit", "first_name": "Ferruh", "last_name": "Yigit", "email": "ferruh.yigit@amd.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/20240423090813.94110-1-mattias.ronnblom@ericsson.com/mbox/", "series": [ { "id": 31809, "url": "https://patches.dpdk.org/api/series/31809/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=31809", "date": "2024-04-23T09:08:13", "name": "net/af_packet: cache align Rx/Tx structs", "version": 1, "mbox": "https://patches.dpdk.org/series/31809/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/139641/comments/", "check": "warning", "checks": "https://patches.dpdk.org/api/patches/139641/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 83E5F43EE8;\n\tTue, 23 Apr 2024 11:18:52 +0200 (CEST)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 1DDB940E54;\n\tTue, 23 Apr 2024 11:18:52 +0200 (CEST)", "from EUR05-DB8-obe.outbound.protection.outlook.com\n (mail-db8eur05on2076.outbound.protection.outlook.com [40.107.20.76])\n by mails.dpdk.org (Postfix) with ESMTP id 1B5AE402AB\n for <dev@dpdk.org>; Tue, 23 Apr 2024 11:18:50 +0200 (CEST)", "from AS8PR04CA0098.eurprd04.prod.outlook.com (2603:10a6:20b:31e::13)\n by PAXPR07MB8578.eurprd07.prod.outlook.com (2603:10a6:102:24d::8)\n with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7472.44; Tue, 23 Apr\n 2024 09:18:43 +0000", "from AMS0EPF0000019B.eurprd05.prod.outlook.com\n (2603:10a6:20b:31e:cafe::51) by AS8PR04CA0098.outlook.office365.com\n (2603:10a6:20b:31e::13) with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7495.34 via Frontend\n Transport; Tue, 23 Apr 2024 09:18:43 +0000", "from oa.msg.ericsson.com (192.176.1.74) by\n AMS0EPF0000019B.mail.protection.outlook.com (10.167.16.247) with Microsoft\n SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n 15.20.7519.19 via Frontend Transport; Tue, 23 Apr 2024 09:18:43 +0000", "from seliicinfr00050.seli.gic.ericsson.se (153.88.142.248) by\n smtp-central.internal.ericsson.com (100.87.178.67) with Microsoft SMTP Server\n id 15.2.1258.12; Tue, 23 Apr 2024 11:18:38 +0200", "from breslau.. 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Linville\" <linville@tuxdriver.com>", "CC": "<dev@dpdk.org>, <hofors@lysator.liu.se>,\n =?utf-8?q?Mattias_R=C3=B6nnblom?= <mattias.ronnblom@ericsson.com>", "Subject": "[PATCH] net/af_packet: cache align Rx/Tx structs", "Date": "Tue, 23 Apr 2024 11:08:13 +0200", "Message-ID": "<20240423090813.94110-1-mattias.ronnblom@ericsson.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"UTF-8\"", "Content-Transfer-Encoding": "8bit", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "AMS0EPF0000019B:EE_|PAXPR07MB8578:EE_", "X-MS-Office365-Filtering-Correlation-Id": "f0097ac6-7dce-4fc5-a771-08dc63765f69", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "=?utf-8?q?M8Oe0RO6bTmCuI5A6L8pbh5g5CveD0b?=\n\t=?utf-8?q?+oTUPGFdovfjvYX7zzaOmNTLglRh7P2APdpnicb2PbLfYUSugpYjOy+1FZ4Lu4Rff?=\n\t=?utf-8?q?bS4Ln72e5ivODS2h1XJf54FZmdbhwDU5oBJPbUL+iyiNAZ0cA3+cQM/uPiPSBnaSg?=\n\t=?utf-8?q?ad+R2uYB0qTKzuE9ES3B7yxxjhxDZqC9uNHwZfwgfgT4Cqeti0wZ6SwQnKOc19DkL?=\n\t=?utf-8?q?/z0rlj3/kjjcwQg8KuaIvwxhx7EXP7uP3xTORGB770jiwHpszVuYI8aJ0Xo+lDbvu?=\n\t=?utf-8?q?MtrAq3Hdb/6hdfN1H/1rLqbtZebVM8rOqqLJXGDY5eGDe0WUEwp13g6OesOj0Az9Y?=\n\t=?utf-8?q?V7q9L67vdAWkyE9hizKa0XMbxl5sojWzk/OSVtyAj6qNEJDy9Wx0Bjs1v2QJ4SE78?=\n\t=?utf-8?q?ATW5TqGlMOiYvI3BADeYBznCfn6OrPgt3tq4TCeEenxBSshbo7dt/GUj8QDphzMjA?=\n\t=?utf-8?q?DOsZ/aeqs6Qbgo8rpQ5Z5a2qJUy6imR7nTTHPzttiVGABRDHP7fDZGgCgEhGN5K2i?=\n\t=?utf-8?q?DPAiYJ0NxM1FnLmATZJ4/WRrJFKHeLWmlALtAGrVsrze862pfbAoOXTW9XeqTpuY2?=\n\t=?utf-8?q?1w8mEEssCikSUYQIjAKOIMZONyRTTjEzYDDvKTSqlUV/jEWFc+es9QPxlBgv44WyT?=\n\t=?utf-8?q?mG9LoMJcPjbBPdu3xzfO8QwRBUlqmTynxqkAEXEbdZMS3yOP1NoghthoZKSHhXsrC?=\n\t=?utf-8?q?myT+d080X0OV/LtTabB9wew1IaDZwUhc1Qy+wKoFqt3VfPnjtOYtUvfq3uZrAiLRR?=\n\t=?utf-8?q?PKGIJm2OlNI8CtL6dZ/SBvy8S0TvTYxlSovy7UnoB8vTTWiixglHyF7711zbJgRgk?=\n\t=?utf-8?q?zaZHq4OIsmBQGePy1S5hPlqwAd9uiCFxqjriKWi/p/LIzpLPWRnw8VFy21b1saT26?=\n\t=?utf-8?q?PoSRjJHZgsdA22mikpYYOKPjFEMwoFWhwK2yh7W6X2bZiUtXZfe11ZsupfTiyQCn7?=\n\t=?utf-8?q?KX4SlSc7fOr70DrZTjGUl3ua6ZpF6SxILEdAFWyzqyArgjnQ6jex51A2G/EU9R6az?=\n\t=?utf-8?q?YSs9HSsEhh675jQynQ4PxEpylpSUmJsI2CReFdzZyF+GBKJD3UjDOgKWuxmVSiYCJ?=\n\t=?utf-8?q?+jlUdbwuZWOjmPak6U2r5kNaLq9/ENRGTNBWC9cpzGJY5zbWlnyk9icDmhKkAzWvD?=\n\t=?utf-8?q?LUSbJf/5eU3RTSNmTZXYq4wpXDszA/sANLQ2FsHHb/3Nev5uq7qpZbqWrT4gfbGMP?=\n\t=?utf-8?q?kMSPjMoBieXmKchI07S1wCz9cppqoZqmjsn2+A5KYiYdPgcDoOwd1nMjai0KpwtZ7?=\n\t=?utf-8?q?IBijxCVYyWhFbiW2xBBL03DwzZeIsz1vR0Z1gHMWLPKFDWfI8Rkj5xlU=3D?=", "X-Forefront-Antispam-Report": "CIP:192.176.1.74; CTRY:SE; LANG:en; SCL:1; SRV:;\n IPV:NLI; SFV:NSPM; H:oa.msg.ericsson.com; PTR:office365.se.ericsson.net;\n CAT:NONE; SFS:(13230031)(1800799015)(36860700004)(82310400014)(376005);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "ericsson.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "23 Apr 2024 09:18:43.7349 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n f0097ac6-7dce-4fc5-a771-08dc63765f69", "X-MS-Exchange-CrossTenant-Id": "92e84ceb-fbfd-47ab-be52-080c6b87953f", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=92e84ceb-fbfd-47ab-be52-080c6b87953f; Ip=[192.176.1.74];\n Helo=[oa.msg.ericsson.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n AMS0EPF0000019B.eurprd05.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PAXPR07MB8578", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "Cache align Rx and Tx queue struct to avoid false sharing.\n\nRX struct happens to be 64 bytes on x86_64 already, so cache alignment\nmakes no change there, but it does on 32-bit ISAs.\n\nTX struct is 56 bytes on x86_64.\n\nBoth structs keep counters, and in the RX case they are updated even\nfor empty polls.\n\nSigned-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>\n---\n drivers/net/af_packet/rte_eth_af_packet.c | 5 +++--\n 1 file changed, 3 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c\nindex 397a32db58..28aeb7d08e 100644\n--- a/drivers/net/af_packet/rte_eth_af_packet.c\n+++ b/drivers/net/af_packet/rte_eth_af_packet.c\n@@ -6,6 +6,7 @@\n * All rights reserved.\n */\n \n+#include <rte_common.h>\n #include <rte_string_fns.h>\n #include <rte_mbuf.h>\n #include <ethdev_driver.h>\n@@ -53,7 +54,7 @@ struct pkt_rx_queue {\n \n \tvolatile unsigned long rx_pkts;\n \tvolatile unsigned long rx_bytes;\n-};\n+} __rte_cache_aligned;\n \n struct pkt_tx_queue {\n \tint sockfd;\n@@ -67,7 +68,7 @@ struct pkt_tx_queue {\n \tvolatile unsigned long tx_pkts;\n \tvolatile unsigned long err_pkts;\n \tvolatile unsigned long tx_bytes;\n-};\n+} __rte_cache_aligned;\n \n struct pmd_internals {\n \tunsigned nb_queues;\n", "prefixes": [] }