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dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by CO1NAM11FT019.mail.protection.outlook.com (10.13.175.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5654.14 via Frontend Transport; Thu, 22 Sep 2022 19:05:08 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.26; Thu, 22 Sep 2022 12:04:52 -0700 Received: from nvidia.com (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Thu, 22 Sep 2022 12:04:49 -0700 From: Alex Vesker To: , , , , , Matan Azrad CC: , , Bing Zhao Subject: [v1 06/19] net/mlx5: provide the available tag registers Date: Thu, 22 Sep 2022 22:03:31 +0300 Message-ID: <20220922190345.394-7-valex@nvidia.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20220922190345.394-1-valex@nvidia.com> References: <20220922190345.394-1-valex@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.126.230.35] X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT019:EE_|CH0PR12MB5386:EE_ X-MS-Office365-Filtering-Correlation-Id: 07a4f052-0753-4ada-430f-08da9ccd5dca 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; 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SFS:(13230022)(4636009)(396003)(39860400002)(136003)(346002)(376002)(451199015)(36840700001)(46966006)(40470700004)(478600001)(5660300002)(41300700001)(6666004)(107886003)(356005)(6636002)(82310400005)(36756003)(7636003)(40460700003)(2906002)(86362001)(36860700001)(54906003)(82740400003)(47076005)(70206006)(8936002)(316002)(6286002)(7696005)(110136005)(426003)(83380400001)(336012)(40480700001)(4326008)(55016003)(26005)(70586007)(16526019)(186003)(8676002)(2616005)(1076003)(21314003); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Sep 2022 19:05:08.1174 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 07a4f052-0753-4ada-430f-08da9ccd5dca X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT019.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5386 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Bing Zhao The available tags that can be used by the application are fixed after startup. A global array is used to store the information and transfer the TAG item directly from the ID to the REG_C_x. Signed-off-by: Bing Zhao --- drivers/net/mlx5/linux/mlx5_os.c | 5 ++- drivers/net/mlx5/mlx5.c | 2 + drivers/net/mlx5/mlx5.h | 1 + drivers/net/mlx5/mlx5_defs.h | 2 + drivers/net/mlx5/mlx5_flow.c | 11 +++++ drivers/net/mlx5/mlx5_flow.h | 27 ++++++++++++ drivers/net/mlx5/mlx5_flow_hw.c | 76 ++++++++++++++++++++++++++++++++ 7 files changed, 123 insertions(+), 1 deletion(-) diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c index 7e316d9dce..6906914ba8 100644 --- a/drivers/net/mlx5/linux/mlx5_os.c +++ b/drivers/net/mlx5/linux/mlx5_os.c @@ -1542,8 +1542,11 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev, rte_rwlock_init(&priv->ind_tbls_lock); if (priv->vport_meta_mask) flow_hw_set_port_info(eth_dev); - if (priv->sh->config.dv_flow_en == 2) + if (priv->sh->config.dv_flow_en == 2) { + /* Only HWS requires this information. */ + flow_hw_init_tags_set(eth_dev); return eth_dev; + } /* Port representor shares the same max priority with pf port. */ if (!priv->sh->flow_priority_check_flag) { /* Supported Verbs flow priority number detection. */ diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index abdf867ea8..556709c697 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -1946,6 +1946,8 @@ mlx5_dev_close(struct rte_eth_dev *dev) flow_hw_resource_release(dev); #endif flow_hw_clear_port_info(dev); + if (priv->sh->config.dv_flow_en == 2) + flow_hw_clear_tags_set(dev); if (priv->rxq_privs != NULL) { /* XXX race condition if mlx5_rx_burst() is still running. */ rte_delay_us_sleep(1000); diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 9300dc02ff..e855dc6ab5 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -1200,6 +1200,7 @@ struct mlx5_dev_ctx_shared { uint32_t drop_action_check_flag:1; /* Check Flag for drop action. */ uint32_t flow_priority_check_flag:1; /* Check Flag for flow priority. */ uint32_t metadata_regc_check_flag:1; /* Check Flag for metadata REGC. */ + uint32_t hws_tags:1; /* Check if tags info for HWS initialized. */ uint32_t max_port; /* Maximal IB device port index. */ struct mlx5_bond_info bond; /* Bonding information. */ struct mlx5_common_device *cdev; /* Backend mlx5 device. */ diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h index 018d3f0f0c..585afb0a98 100644 --- a/drivers/net/mlx5/mlx5_defs.h +++ b/drivers/net/mlx5/mlx5_defs.h @@ -139,6 +139,8 @@ #define MLX5_XMETA_MODE_META32 2 /* Provide info on patrial hw miss. Implies MLX5_XMETA_MODE_META16 */ #define MLX5_XMETA_MODE_MISS_INFO 3 +/* Only valid in HWS, 32bits extended META without MARK support in FDB. */ +#define MLX5_XMETA_MODE_META32_HWS 4 /* Tx accurate scheduling on timestamps parameters. */ #define MLX5_TXPP_WAIT_INIT_TS 1000ul /* How long to wait timestamp. */ diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c index acf1467bf6..45109001ca 100644 --- a/drivers/net/mlx5/mlx5_flow.c +++ b/drivers/net/mlx5/mlx5_flow.c @@ -39,6 +39,17 @@ */ struct flow_hw_port_info mlx5_flow_hw_port_infos[RTE_MAX_ETHPORTS]; +/* + * A global structure to save the available REG_C_x for tags usage. + * The Meter color REG (ASO) and the last available one will be reserved + * for PMD internal usage. + * Since there is no "port" concept in the driver, it is assumed that the + * available tags set will be the minimum intersection. + * 3 - in FDB mode / 5 - in legacy mode + */ +uint32_t mlx5_flow_hw_avl_tags_init_cnt; +enum modify_reg mlx5_flow_hw_avl_tags[MLX5_FLOW_HW_TAGS_MAX] = {REG_NON}; + struct tunnel_default_miss_ctx { uint16_t *queue; __extension__ diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h index 2eb2b46060..cae1a64def 100644 --- a/drivers/net/mlx5/mlx5_flow.h +++ b/drivers/net/mlx5/mlx5_flow.h @@ -1328,6 +1328,10 @@ struct flow_hw_port_info { extern struct flow_hw_port_info mlx5_flow_hw_port_infos[RTE_MAX_ETHPORTS]; +#define MLX5_FLOW_HW_TAGS_MAX 8 +extern uint32_t mlx5_flow_hw_avl_tags_init_cnt; +extern enum modify_reg mlx5_flow_hw_avl_tags[]; + /* * Get metadata match tag and mask for given rte_eth_dev port. * Used in HWS rule creation. @@ -1367,9 +1371,32 @@ flow_hw_get_wire_port(struct ibv_context *ibctx) return NULL; } +/* + * Convert metadata or tag to the actual register. + * META: Can only be used to match in the FDB in this stage, fixed C_1. + * TAG: C_x expect meter color reg and the reserved ones. + * TODO: Per port / device, FDB or NIC for Meta matching. + */ +static __rte_always_inline int +flow_hw_get_reg_id(enum rte_flow_item_type type, uint32_t id) +{ + switch (type) { + case RTE_FLOW_ITEM_TYPE_META: + return REG_C_1; + case RTE_FLOW_ITEM_TYPE_TAG: + MLX5_ASSERT(id < MLX5_FLOW_HW_TAGS_MAX); + return mlx5_flow_hw_avl_tags[id]; + default: + return REG_NON; + } +} + void flow_hw_set_port_info(struct rte_eth_dev *dev); void flow_hw_clear_port_info(struct rte_eth_dev *dev); +void flow_hw_init_tags_set(struct rte_eth_dev *dev); +void flow_hw_clear_tags_set(struct rte_eth_dev *dev); + typedef int (*mlx5_flow_validate_t)(struct rte_eth_dev *dev, const struct rte_flow_attr *attr, const struct rte_flow_item items[], diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c index fe809a83b9..78c741bb91 100644 --- a/drivers/net/mlx5/mlx5_flow_hw.c +++ b/drivers/net/mlx5/mlx5_flow_hw.c @@ -2237,6 +2237,82 @@ flow_hw_clear_port_info(struct rte_eth_dev *dev) info->is_wire = 0; } +/* + * Initialize the information of available tag registers and an intersection + * of all the probed devices' REG_C_Xs. + * PS. No port concept in steering part, right now it cannot be per port level. + * + * @param[in] dev + * Pointer to the rte_eth_dev structure. + */ +void flow_hw_init_tags_set(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + uint32_t meta_mode = priv->sh->config.dv_xmeta_en; + uint8_t masks = (uint8_t)priv->sh->cdev->config.hca_attr.set_reg_c; + uint32_t i, j; + enum modify_reg copy[MLX5_FLOW_HW_TAGS_MAX] = {REG_NON}; + uint8_t unset = 0; + uint8_t copy_masks = 0; + + /* + * The CAPA is global for common device but only used in net. + * It is shared per eswitch domain. + */ + if (!!priv->sh->hws_tags) + return; + unset |= 1 << (priv->mtr_color_reg - REG_C_0); + unset |= 1 << (REG_C_6 - REG_C_0); + if (meta_mode == MLX5_XMETA_MODE_META32_HWS) { + unset |= 1 << (REG_C_1 - REG_C_0); + unset |= 1 << (REG_C_0 - REG_C_0); + } + masks &= ~unset; + if (mlx5_flow_hw_avl_tags_init_cnt) { + for (i = 0; i < MLX5_FLOW_HW_TAGS_MAX; i++) { + if (mlx5_flow_hw_avl_tags[i] != REG_NON && !!((1 << i) & masks)) { + copy[mlx5_flow_hw_avl_tags[i] - REG_C_0] = + mlx5_flow_hw_avl_tags[i]; + copy_masks |= (1 << i); + } + } + if (copy_masks != masks) { + j = 0; + for (i = 0; i < MLX5_FLOW_HW_TAGS_MAX; i++) + if (!!((1 << i) & copy_masks)) + mlx5_flow_hw_avl_tags[j++] = copy[i]; + } + } else { + j = 0; + for (i = 0; i < MLX5_FLOW_HW_TAGS_MAX; i++) { + if (!!((1 << i) & masks)) + mlx5_flow_hw_avl_tags[j++] = + (enum modify_reg)(i + (uint32_t)REG_C_0); + } + } + priv->sh->hws_tags = 1; + mlx5_flow_hw_avl_tags_init_cnt++; +} + +/* + * Reset the available tag registers information to NONE. + * + * @param[in] dev + * Pointer to the rte_eth_dev structure. + */ +void flow_hw_clear_tags_set(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + + if (!priv->sh->hws_tags) + return; + priv->sh->hws_tags = 0; + mlx5_flow_hw_avl_tags_init_cnt--; + if (!mlx5_flow_hw_avl_tags_init_cnt) + memset(mlx5_flow_hw_avl_tags, REG_NON, + sizeof(enum modify_reg) * MLX5_FLOW_HW_TAGS_MAX); +} + /** * Create shared action. * -- 2.18.1