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GET /api/patches/101021/?format=api
{ "id": 101021, "url": "http://patches.dpdk.org/api/patches/101021/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20211011123733.961222-1-xuemingl@nvidia.com/", "project": { "id": 1, "url": "http://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": "<20211011123733.961222-1-xuemingl@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20211011123733.961222-1-xuemingl@nvidia.com", "date": "2021-10-11T12:37:27", "name": "[v5,0/5] ethdev: introduce shared Rx queue", "commit_ref": null, "pull_url": null, "state": null, "archived": false, "hash": null, "submitter": { "id": 1904, "url": "http://patches.dpdk.org/api/people/1904/?format=api", "name": "Xueming Li", "email": "xuemingl@nvidia.com" }, "delegate": null, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20211011123733.961222-1-xuemingl@nvidia.com/mbox/", "series": [], "comments": "http://patches.dpdk.org/api/patches/101021/comments/", "check": "pending", "checks": "http://patches.dpdk.org/api/patches/101021/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 256CFA034F;\n\tMon, 11 Oct 2021 14:38:29 +0200 (CEST)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id A9AC240E0F;\n\tMon, 11 Oct 2021 14:38:27 +0200 (CEST)", "from NAM10-DM6-obe.outbound.protection.outlook.com\n (mail-dm6nam10on2055.outbound.protection.outlook.com [40.107.93.55])\n by mails.dpdk.org (Postfix) with ESMTP id 3616840E01\n for <dev@dpdk.org>; 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mx.microsoft.com 1; spf=pass (sender ip is\n 216.228.112.34) smtp.rcpttodomain=oktetlabs.ru smtp.mailfrom=nvidia.com;\n dmarc=pass (p=quarantine sp=none pct=100) action=none header.from=nvidia.com;\n dkim=none (message not signed); arc=none", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com;\n s=selector2;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=uNDQl0dMSKpexgyatwyd0WBG1tYBW6JDPQJFGQAN7cM=;\n b=Thqb1iuXBRZrBCLqsciHJ1aRXqDcn4w1DcSpE965NvO+3YMST6f6Xck+QeWAQKiT4JiohlGdYHbWZxFqn0Mh8q+hgKvowsihBlIwV72Asu3ay8hX5gXDlGddk00OPj8WoYfrZjQ9CJ/U8ntD8T/gKDw+7c0CGYPH1pClm2XZ8DPXEsdgI0LyyOs2He/6k6d67NhTb7qEjok6YbeRZyAoa43l7uH/WvTWMgyHbyrMQUXYLHZ1uPyDVEd8AG6SIAVx4CEiM++JSsRi6I0s/0iqS8qAYNmjbzKkCCR28sZ5selAyx8TXIfiCl4n4CC3Lu7qfnfVjvvN6wMN9I3lG/bxiA==", "X-MS-Exchange-Authentication-Results": "spf=pass (sender IP is 216.228.112.34)\n smtp.mailfrom=nvidia.com; oktetlabs.ru; dkim=none (message not signed)\n header.d=none;oktetlabs.ru; dmarc=pass action=none header.from=nvidia.com;", "Received-SPF": "Pass (protection.outlook.com: domain of nvidia.com designates\n 216.228.112.34 as permitted sender) receiver=protection.outlook.com;\n client-ip=216.228.112.34; helo=mail.nvidia.com;", "From": "Xueming Li <xuemingl@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "<xuemingl@nvidia.com>, Jerin Jacob <jerinjacobk@gmail.com>, Ferruh Yigit\n <ferruh.yigit@intel.com>, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,\n Viacheslav Ovsiienko <viacheslavo@nvidia.com>, Thomas Monjalon\n <thomas@monjalon.net>, Lior Margalit <lmargalit@nvidia.com>, \"Ananyev\n Konstantin\" <konstantin.ananyev@intel.com>", "Date": "Mon, 11 Oct 2021 20:37:27 +0800", "Message-ID": "<20211011123733.961222-1-xuemingl@nvidia.com>", "X-Mailer": "git-send-email 2.33.0", "In-Reply-To": "<20210727034204.20649-1-xuemingl@nvidia.com>", "References": "<20210727034204.20649-1-xuemingl@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-Originating-IP": "[172.20.187.5]", "X-ClientProxiedBy": "HQMAIL105.nvidia.com (172.20.187.12) To\n HQMAIL107.nvidia.com (172.20.187.13)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "f3f70ca2-40d7-4c34-a272-08d98cb403eb", "X-MS-TrafficTypeDiagnostic": "DM5PR1201MB0186:", "X-LD-Processed": "43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr", "X-Microsoft-Antispam-PRVS": "\n <DM5PR1201MB0186D3D50ABEEFA0620BF923A1B59@DM5PR1201MB0186.namprd12.prod.outlook.com>", "X-MS-Oob-TLC-OOBClassifiers": "OLM:8882;", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:216.228.112.34; CTRY:US; LANG:en; SCL:1;\n SRV:;\n IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:schybrid03.nvidia.com; CAT:NONE;\n SFS:(4636009)(36840700001)(46966006)(336012)(6286002)(1076003)(47076005)(316002)(8676002)(26005)(2616005)(426003)(70206006)(36756003)(55016002)(70586007)(83380400001)(8936002)(7696005)(86362001)(2906002)(6916009)(186003)(16526019)(82310400003)(356005)(4326008)(7636003)(54906003)(36860700001)(5660300002)(508600001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "11 Oct 2021 12:38:23.6342 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n f3f70ca2-40d7-4c34-a272-08d98cb403eb", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n DM6NAM11FT038.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DM5PR1201MB0186", "Subject": "[dpdk-dev] [PATCH v5 0/5] ethdev: introduce shared Rx queue", "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", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "In current DPDK framework, all Rx queues is pre-loaded with mbufs for\nincoming packets. When number of representors scale out in a switch\ndomain, the memory consumption became significant. Further more,\npolling all ports leads to high cache miss, high latency and low\nthroughputs.\n\nThis patch introduces shared Rx queue. PF and representors with same\nconfiguration in same switch domain could share Rx queue set by\nspecifying shared Rx queue offloading flag and sharing group.\n\nAll ports that Shared Rx queue actually shares One Rx queue and only\npre-load mbufs to one Rx queue, memory is saved.\n\nPolling any queue using same shared Rx queue receives packets from all\nmember ports. Source port is identified by mbuf->port.\n\nMultiple groups is supported by group ID. Port queue number in a shared\ngroup should be identical. Queue index is 1:1 mapped in shared group.\nAn example of two share groups:\n Group0, 4 shared Rx queues per member port: PF, repr0, repr1\n Group1, 2 shared Rx queues per member port: repr2, repr3, ... repr127\n Poll first port for each group:\n core\tport\tqueue\n 0\t0\t0\n 1\t0\t1\n 2\t0\t2\n 3\t0\t3\n 4\t2\t0\n 5\t2\t1\n\nShared Rx queue must be polled on single thread or core. If both PF0 and\nrepresentor0 joined same share group, can't poll pf0rxq0 on core1 and\nrep0rxq0 on core2. Actually, polling one port within share group is\nsufficient since polling any port in group will return packets for any\nport in group.\n\nThere was some discussion to aggregate member ports in same group into a\ndummy port, several ways to achieve it. Since it optional, need to collect\nmore feedback and requirement from user, make better decision later.\n\nv1:\n - initial version\nv2:\n - add testpmd patches\nv3:\n - change common forwarding api to macro for performance, thanks Jerin.\n - save global variable accessed in forwarding to flowstream to minimize\n cache miss\n - combined patches for each forwarding engine\n - support multiple groups in testpmd \"--share-rxq\" parameter\n - new api to aggregate shared rxq group\nv4:\n - spelling fixes\n - remove shared-rxq support for all forwarding engines\n - add dedicate shared-rxq forwarding engine\nv5:\n - fix grammars\n - remove aggregate api and leave it for later discussion\n - add release notes\n - add deployment example\n\nXueming Li (5):\n ethdev: introduce shared Rx queue\n app/testpmd: new parameter to enable shared Rx queue\n app/testpmd: dump port info for shared Rx queue\n app/testpmd: force shared Rx queue polled on same core\n app/testpmd: add forwarding engine for shared Rx queue\n\n app/test-pmd/config.c | 102 +++++++++++-\n app/test-pmd/meson.build | 1 +\n app/test-pmd/parameters.c | 13 ++\n app/test-pmd/shared_rxq_fwd.c | 148 ++++++++++++++++++\n app/test-pmd/testpmd.c | 23 ++-\n app/test-pmd/testpmd.h | 5 +\n app/test-pmd/util.c | 3 +\n doc/guides/nics/features.rst | 11 ++\n doc/guides/nics/features/default.ini | 1 +\n .../prog_guide/switch_representation.rst | 10 ++\n doc/guides/rel_notes/release_21_11.rst | 4 +\n doc/guides/testpmd_app_ug/run_app.rst | 8 +\n doc/guides/testpmd_app_ug/testpmd_funcs.rst | 5 +-\n lib/ethdev/rte_ethdev.c | 1 +\n lib/ethdev/rte_ethdev.h | 7 +\n 15 files changed, 339 insertions(+), 3 deletions(-)\n create mode 100644 app/test-pmd/shared_rxq_fwd.c", "diff": null, "prefixes": [ "v5", "0/5" ] }