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Thu, 10 Feb 2022 05:31:26 -0800 From: Eli Cohen To: , CC: , , , "Eli Cohen" Subject: [PATCH v1 3/4] vdpa: Support for configuring max VQ pairs for a device Date: Thu, 10 Feb 2022 15:31:14 +0200 Message-ID: <20220210133115.115967-4-elic@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220210133115.115967-1-elic@nvidia.com> References: <20220210133115.115967-1-elic@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 34d185e3-4895-4337-3c38-08d9ec99a82b X-MS-TrafficTypeDiagnostic: MN2PR12MB3246:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; 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:12.22.5.236;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(46966006)(36840700001)(110136005)(508600001)(6666004)(54906003)(86362001)(316002)(356005)(81166007)(7696005)(4326008)(36860700001)(8676002)(107886003)(336012)(2616005)(1076003)(186003)(426003)(82310400004)(70206006)(40460700003)(36756003)(8936002)(83380400001)(2906002)(5660300002)(70586007)(47076005)(26005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Feb 2022 13:31:34.3786 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 34d185e3-4895-4337-3c38-08d9ec99a82b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.236];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT052.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB3246 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use VDPA_ATTR_DEV_MGMTDEV_MAX_VQS to specify max number of virtqueue pairs to configure for a vdpa device when adding a device. Examples: 1. Create a device with 3 virtqueue pairs: $ vdpa dev add name vdpa-a mgmtdev auxiliary/mlx5_core.sf.1 max_vqp 3 2. Read the configuration of a vdpa device $ vdpa dev config show vdpa-a vdpa-a: mac 00:00:00:00:88:88 link up link_announce false max_vq_pairs 3 \ mtu 1500 negotiated_features CSUM GUEST_CSUM MTU MAC HOST_TSO4 HOST_TSO6 STATUS \ CTRL_VQ MQ CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM Signed-off-by: Eli Cohen --- vdpa/include/uapi/linux/vdpa.h | 1 + vdpa/vdpa.c | 25 ++++++++++++++++++++++++- 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/vdpa/include/uapi/linux/vdpa.h b/vdpa/include/uapi/linux/vdpa.h index 748c350450b2..a3ebf4d4d9b8 100644 --- a/vdpa/include/uapi/linux/vdpa.h +++ b/vdpa/include/uapi/linux/vdpa.h @@ -41,6 +41,7 @@ enum vdpa_attr { VDPA_ATTR_DEV_NET_CFG_MTU, /* u16 */ VDPA_ATTR_DEV_NEGOTIATED_FEATURES, /* u64 */ + VDPA_ATTR_DEV_MGMTDEV_MAX_VQS, /* u32 */ /* new attributes must be added above here */ VDPA_ATTR_MAX, diff --git a/vdpa/vdpa.c b/vdpa/vdpa.c index 7deab710913d..99ee828630cc 100644 --- a/vdpa/vdpa.c +++ b/vdpa/vdpa.c @@ -24,6 +24,7 @@ #define VDPA_OPT_VDEV_HANDLE BIT(3) #define VDPA_OPT_VDEV_MAC BIT(4) #define VDPA_OPT_VDEV_MTU BIT(5) +#define VDPA_OPT_MAX_VQP BIT(6) struct vdpa_opts { uint64_t present; /* flags of present items */ @@ -33,6 +34,7 @@ struct vdpa_opts { unsigned int device_id; char mac[ETH_ALEN]; uint16_t mtu; + uint16_t max_vqp; }; struct vdpa { @@ -80,6 +82,7 @@ static const enum mnl_attr_data_type vdpa_policy[VDPA_ATTR_MAX + 1] = { [VDPA_ATTR_DEV_MAX_VQS] = MNL_TYPE_U32, [VDPA_ATTR_DEV_MAX_VQ_SIZE] = MNL_TYPE_U16, [VDPA_ATTR_DEV_NEGOTIATED_FEATURES] = MNL_TYPE_U64, + [VDPA_ATTR_DEV_MGMTDEV_MAX_VQS] = MNL_TYPE_U32, }; static int attr_cb(const struct nlattr *attr, void *data) @@ -221,6 +224,8 @@ static void vdpa_opts_put(struct nlmsghdr *nlh, struct vdpa *vdpa) sizeof(opts->mac), opts->mac); if (opts->present & VDPA_OPT_VDEV_MTU) mnl_attr_put_u16(nlh, VDPA_ATTR_DEV_NET_CFG_MTU, opts->mtu); + if (opts->present & VDPA_OPT_MAX_VQP) + mnl_attr_put_u16(nlh, VDPA_ATTR_DEV_NET_CFG_MAX_VQP, opts->max_vqp); } static int vdpa_argv_parse(struct vdpa *vdpa, int argc, char **argv, @@ -289,6 +294,14 @@ static int vdpa_argv_parse(struct vdpa *vdpa, int argc, char **argv, NEXT_ARG_FWD(); o_found |= VDPA_OPT_VDEV_MTU; + } else if ((matches(*argv, "max_vqp") == 0) && (o_optional & VDPA_OPT_MAX_VQP)) { + NEXT_ARG_FWD(); + err = vdpa_argv_u16(vdpa, argc, argv, &opts->max_vqp); + if (err) + return err; + + NEXT_ARG_FWD(); + o_found |= VDPA_OPT_MAX_VQP; } else { fprintf(stderr, "Unknown option \"%s\"\n", *argv); return -EINVAL; @@ -513,6 +526,15 @@ static void pr_out_mgmtdev_show(struct vdpa *vdpa, const struct nlmsghdr *nlh, pr_out_array_end(vdpa); } + if (tb[VDPA_ATTR_DEV_MGMTDEV_MAX_VQS]) { + uint16_t num_vqs; + + if (!vdpa->json_output) + printf("\n"); + num_vqs = mnl_attr_get_u16(tb[VDPA_ATTR_DEV_MGMTDEV_MAX_VQS]); + print_uint(PRINT_ANY, "max_supported_vqs", " max_supported_vqs %d", num_vqs); + } + pr_out_handle_end(vdpa); } @@ -662,7 +684,8 @@ static int cmd_dev_add(struct vdpa *vdpa, int argc, char **argv) NLM_F_REQUEST | NLM_F_ACK); err = vdpa_argv_parse_put(nlh, vdpa, argc, argv, VDPA_OPT_VDEV_MGMTDEV_HANDLE | VDPA_OPT_VDEV_NAME, - VDPA_OPT_VDEV_MAC | VDPA_OPT_VDEV_MTU); + VDPA_OPT_VDEV_MAC | VDPA_OPT_VDEV_MTU | + VDPA_OPT_MAX_VQP); if (err) return err; -- 2.34.1