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GET /api/patches/116433/?format=api
{ "id": 116433, "url": "https://patches.dpdk.org/api/patches/116433/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/20220919155013.61473-1-michaelsav@nvidia.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": "<20220919155013.61473-1-michaelsav@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20220919155013.61473-1-michaelsav@nvidia.com", "date": "2022-09-19T15:50:13", "name": "[v3] ethdev: add send to kernel action", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "4f4621c907913a679c7f62426cad8889579e7a24", "submitter": { "id": 2805, "url": "https://patches.dpdk.org/api/people/2805/?format=api", "name": "Michael Savisko", "email": "michaelsav@nvidia.com" }, "delegate": { "id": 3961, "url": "https://patches.dpdk.org/api/users/3961/?format=api", "username": "arybchenko", "first_name": "Andrew", "last_name": "Rybchenko", "email": "andrew.rybchenko@oktetlabs.ru" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/20220919155013.61473-1-michaelsav@nvidia.com/mbox/", "series": [ { "id": 24713, "url": "https://patches.dpdk.org/api/series/24713/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=24713", "date": "2022-09-19T15:50:13", "name": "[v3] ethdev: add send to kernel action", "version": 3, "mbox": "https://patches.dpdk.org/series/24713/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/116433/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/116433/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 790CFA00C3;\n\tMon, 19 Sep 2022 17:50:58 +0200 (CEST)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id AA92640E0F;\n\tMon, 19 Sep 2022 17:50:57 +0200 (CEST)", "from NAM12-BN8-obe.outbound.protection.outlook.com\n (mail-bn8nam12on2061.outbound.protection.outlook.com [40.107.237.61])\n by mails.dpdk.org (Postfix) with ESMTP id 7593B40141\n for <dev@dpdk.org>; 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helo=mail.nvidia.com; pr=C", "From": "Michael Savisko <michaelsav@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "<michaelsav@nvidia.com>, <orika@nvidia.com>, <viacheslavo@nvidia.com>,\n <asafp@nvidia.com>, Aman Singh <aman.deep.singh@intel.com>, Yuying Zhang\n <yuying.zhang@intel.com>, Thomas Monjalon <thomas@monjalon.net>, Ferruh Yigit\n <ferruh.yigit@xilinx.com>, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>", "Subject": "[PATCH v3] ethdev: add send to kernel action", "Date": "Mon, 19 Sep 2022 18:50:13 +0300", "Message-ID": "<20220919155013.61473-1-michaelsav@nvidia.com>", "X-Mailer": "git-send-email 2.27.0", "In-Reply-To": "<20220914093219.11728-1-michaelsav@nvidia.com>", "References": "<20220914093219.11728-1-michaelsav@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-Originating-IP": "[10.126.231.35]", "X-ClientProxiedBy": "rnnvmail202.nvidia.com (10.129.68.7) To\n rnnvmail201.nvidia.com (10.129.68.8)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "CO1NAM11FT050:EE_|BN9PR12MB5324:EE_", "X-MS-Office365-Filtering-Correlation-Id": "e92d5c6e-3c98-49a0-935e-08da9a56bc57", "X-LD-Processed": "43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr", "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:216.228.117.161; CTRY:US; LANG:en; SCL:1;\n SRV:;\n IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge2.nvidia.com; CAT:NONE;\n SFS:(13230022)(4636009)(39860400002)(346002)(376002)(136003)(396003)(451199015)(40470700004)(46966006)(36840700001)(2906002)(2616005)(54906003)(7696005)(82310400005)(41300700001)(356005)(36860700001)(6666004)(55016003)(40480700001)(4326008)(8676002)(70206006)(83380400001)(6916009)(70586007)(316002)(426003)(336012)(40460700003)(1076003)(5660300002)(36756003)(47076005)(16526019)(186003)(8936002)(478600001)(86362001)(26005)(6286002)(7636003)(82740400003);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "19 Sep 2022 15:50:54.2505 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n e92d5c6e-3c98-49a0-935e-08da9a56bc57", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.161];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n CO1NAM11FT050.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BN9PR12MB5324", "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": "In some cases application may receive a packet that should have been\nreceived by the kernel. In this case application uses KNI or other means\nto transfer the packet to the kernel.\n\nWith bifurcated driver we can have a rule to route packets matching\na pattern (example: IPv4 packets) to the DPDK application and the rest\nof the traffic will be received by the kernel.\nBut if we want to receive most of the traffic in DPDK except specific\npattern (example: ICMP packets) that should be processed by the kernel,\nthen it's easier to re-route these packets with a single rule.\n\nThis commit introduces new rte_flow action which allows application to\nre-route packets directly to the kernel without software involvement.\n\nAdd new testpmd rte_flow action 'send_to_kernel'. The application\nmay use this action to route the packet to the kernel while still\nin the HW.\n\nExample with testpmd command:\n\nflow create 0 ingress priority 0 group 1 pattern eth type spec 0x0800\ntype mask 0xffff / end actions send_to_kernel / end\n\nSigned-off-by: Michael Savisko <michaelsav@nvidia.com>\n---\n app/test-pmd/cmdline_flow.c | 9 +++++++++\n doc/guides/testpmd_app_ug/testpmd_funcs.rst | 2 ++\n lib/ethdev/rte_flow.c | 1 +\n lib/ethdev/rte_flow.h | 10 ++++++++++\n 4 files changed, 22 insertions(+)", "diff": "diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c\nindex 7f50028eb7..042f6b34a6 100644\n--- a/app/test-pmd/cmdline_flow.c\n+++ b/app/test-pmd/cmdline_flow.c\n@@ -612,6 +612,7 @@ enum index {\n \tACTION_PORT_REPRESENTOR_PORT_ID,\n \tACTION_REPRESENTED_PORT,\n \tACTION_REPRESENTED_PORT_ETHDEV_PORT_ID,\n+\tACTION_SEND_TO_KERNEL,\n };\n \n /** Maximum size for pattern in struct rte_flow_item_raw. */\n@@ -1872,6 +1873,7 @@ static const enum index next_action[] = {\n \tACTION_CONNTRACK_UPDATE,\n \tACTION_PORT_REPRESENTOR,\n \tACTION_REPRESENTED_PORT,\n+\tACTION_SEND_TO_KERNEL,\n \tZERO,\n };\n \n@@ -6341,6 +6343,13 @@ static const struct token token_list[] = {\n \t\t.help = \"submit a list of associated actions for red\",\n \t\t.next = NEXT(next_action),\n \t},\n+\t[ACTION_SEND_TO_KERNEL] = {\n+\t\t.name = \"send_to_kernel\",\n+\t\t.help = \"send packets to kernel\",\n+\t\t.priv = PRIV_ACTION(SEND_TO_KERNEL, 0),\n+\t\t.next = NEXT(NEXT_ENTRY(ACTION_NEXT)),\n+\t\t.call = parse_vc,\n+\t},\n \n \t/* Top-level command. */\n \t[ADD] = {\ndiff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst\nindex 330e34427d..c259c8239a 100644\n--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst\n+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst\n@@ -4189,6 +4189,8 @@ This section lists supported actions and their attributes, if any.\n \n - ``ethdev_port_id {unsigned}``: ethdev port ID\n \n+- ``send_to_kernel``: send packets to kernel.\n+\n Destroying flow rules\n ~~~~~~~~~~~~~~~~~~~~~\n \ndiff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c\nindex 501be9d602..627c671ce4 100644\n--- a/lib/ethdev/rte_flow.c\n+++ b/lib/ethdev/rte_flow.c\n@@ -259,6 +259,7 @@ static const struct rte_flow_desc_data rte_flow_desc_action[] = {\n \tMK_FLOW_ACTION(CONNTRACK, sizeof(struct rte_flow_action_conntrack)),\n \tMK_FLOW_ACTION(PORT_REPRESENTOR, sizeof(struct rte_flow_action_ethdev)),\n \tMK_FLOW_ACTION(REPRESENTED_PORT, sizeof(struct rte_flow_action_ethdev)),\n+\tMK_FLOW_ACTION(SEND_TO_KERNEL, 0),\n };\n \n int\ndiff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h\nindex a79f1e7ef0..bf076087b3 100644\n--- a/lib/ethdev/rte_flow.h\n+++ b/lib/ethdev/rte_flow.h\n@@ -2879,6 +2879,16 @@ enum rte_flow_action_type {\n \t * @see struct rte_flow_action_ethdev\n \t */\n \tRTE_FLOW_ACTION_TYPE_REPRESENTED_PORT,\n+\n+\t/**\n+\t * Send packets to the kernel, without going to userspace at all.\n+\t * The packets will be received by the kernel driver sharing\n+\t * the same device as the DPDK port.\n+\t * This is an ingress action only.\n+\t *\n+\t * No associated configuration structure.\n+\t */\n+\tRTE_FLOW_ACTION_TYPE_SEND_TO_KERNEL,\n };\n \n /**\n", "prefixes": [ "v3" ] }