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Miller" , Jakub Kicinski CC: , , , , Shay Drory , Moshe Shemesh Subject: [PATCH net-next v2 1/6] devlink: Add new "io_eq_size" generic device param Date: Wed, 8 Dec 2021 09:00:01 +0200 Message-ID: <20211208070006.13100-2-shayd@nvidia.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20211208070006.13100-1-shayd@nvidia.com> References: <20211208070006.13100-1-shayd@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.20.187.5] X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: dac00f2f-d568-4aff-9b4a-08d9ba187005 X-MS-TrafficTypeDiagnostic: BYAPR12MB3014:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:203.18.50.14;CTRY:HK;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:hkhybrid03.nvidia.com;CAT:NONE;SFS:(4636009)(36840700001)(46966006)(40470700001)(70206006)(5660300002)(70586007)(426003)(336012)(6666004)(2616005)(1076003)(34070700002)(8676002)(47076005)(40460700001)(4326008)(36860700001)(8936002)(508600001)(36756003)(7636003)(356005)(82310400004)(86362001)(107886003)(83380400001)(316002)(186003)(16526019)(2906002)(26005)(110136005)(54906003)(41533002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Dec 2021 07:00:36.6502 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dac00f2f-d568-4aff-9b4a-08d9ba187005 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[203.18.50.14];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT060.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB3014 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add new device generic parameter to determine the size of the I/O completion EQs. For example, to reduce I/O EQ size to 64, execute: $ devlink dev param set pci/0000:06:00.0 \ name io_eq_size value 64 cmode driverinit $ devlink dev reload pci/0000:06:00.0 Signed-off-by: Shay Drory Reviewed-by: Moshe Shemesh --- Documentation/networking/devlink/devlink-params.rst | 3 +++ include/net/devlink.h | 4 ++++ net/core/devlink.c | 5 +++++ 3 files changed, 12 insertions(+) diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst index b7dfe693a332..cd9342305a13 100644 --- a/Documentation/networking/devlink/devlink-params.rst +++ b/Documentation/networking/devlink/devlink-params.rst @@ -129,3 +129,6 @@ own name. will NACK any attempt of other host to reset the device. This parameter is useful for setups where a device is shared by different hosts, such as multi-host setup. + * - ``io_eq_size`` + - u16 + - Control the size of I/O completion EQs. diff --git a/include/net/devlink.h b/include/net/devlink.h index 3276a29f2b81..61efa45b8786 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -459,6 +459,7 @@ enum devlink_param_generic_id { DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA, DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET, DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP, + DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE, /* add new param generic ids above here*/ __DEVLINK_PARAM_GENERIC_ID_MAX, @@ -511,6 +512,9 @@ enum devlink_param_generic_id { #define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME "enable_iwarp" #define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE DEVLINK_PARAM_TYPE_BOOL +#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME "io_eq_size" +#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U16 + #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \ { \ .id = DEVLINK_PARAM_GENERIC_ID_##_id, \ diff --git a/net/core/devlink.c b/net/core/devlink.c index db3b52110cf2..0d4e63d11585 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4466,6 +4466,11 @@ static const struct devlink_param devlink_param_generic[] = { .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME, .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE, }, + { + .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE, + .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME, + .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE, + }, }; static int devlink_param_generic_verify(const struct devlink_param *param) -- 2.21.3