From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 792C1A04B1; Thu, 24 Sep 2020 15:08:44 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id AECFA1DEE8; Thu, 24 Sep 2020 15:08:28 +0200 (CEST) Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) by dpdk.org (Postfix) with ESMTP id 0CC3E1DDED for ; Thu, 24 Sep 2020 15:08:25 +0200 (CEST) Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id E1C13BAF110A4AD072DB; Thu, 24 Sep 2020 21:08:22 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.487.0; Thu, 24 Sep 2020 21:08:14 +0800 From: "Min Hu (Connor)" To: CC: , , , , Date: Thu, 24 Sep 2020 21:05:42 +0800 Message-ID: <1600952745-55993-2-git-send-email-humin29@huawei.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1600952745-55993-1-git-send-email-humin29@huawei.com> References: <1599534347-20430-1-git-send-email-humin29@huawei.com> <1600952745-55993-1-git-send-email-humin29@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH V12 1/4] ethdev: introduce FEC API X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch adds Forward error correction(FEC) support for ethdev. Introduce APIs which support query and config FEC information in hardware. Signed-off-by: Min Hu (Connor) Reviewed-by: Wei Hu (Xavier) Reviewed-by: Chengwen Feng Reviewed-by: Chengchang Tang Reviewed-by: Ajit Khaparde Acked-by: Konstantin Ananyev --- v10->v11: allow to report capabilities per link speed. specify what should be reported if link is down when get FEC. change mode to capa bitmask. --- v9->v10: add macro RTE_ETH_FEC_MODE_CAPA_MASK(x) to indicate different FEC mode capa. --- v8->v9: added reviewed-by and acked-by. --- v7->v8: put AUTO just after NOFEC in rte_fec_mode definition. --- v6->v7: deleted RTE_ETH_FEC_NUM to prevent ABI breakage. add new macro to indicate translation from fec mode to capa. --- v5->v6: modified release notes. deleted check duplicated for FEC API fixed code styles according to DPDK coding style. added _eth prefix. --- v4->v5: Modifies FEC capa definitions using macros. Add RTE_ prefix for public FEC mode enum. add release notes about FEC for dpdk20_11. --- v2->v3: add function return value "-ENOTSUP" for API. --- lib/librte_ethdev/rte_ethdev.c | 37 +++++++++++++ lib/librte_ethdev/rte_ethdev.h | 91 ++++++++++++++++++++++++++++++++ lib/librte_ethdev/rte_ethdev_driver.h | 82 ++++++++++++++++++++++++++++ lib/librte_ethdev/rte_ethdev_version.map | 3 ++ 4 files changed, 213 insertions(+) diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index dfe5c1b..b614bfc 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -3679,6 +3679,43 @@ rte_eth_led_off(uint16_t port_id) return eth_err(port_id, (*dev->dev_ops->dev_led_off)(dev)); } +int +rte_eth_fec_get_capability(uint16_t port_id, uint32_t *num, + struct rte_eth_fec_capa *speed_fec_capa) +{ + struct rte_eth_dev *dev; + + if (num == NULL || speed_fec_capa == NULL) + return -EINVAL; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); + dev = &rte_eth_devices[port_id]; + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_get_capability, -ENOTSUP); + return eth_err(port_id, (*dev->dev_ops->fec_get_capability)(dev, num, + speed_fec_capa)); +} + +int +rte_eth_fec_get(uint16_t port_id, uint32_t *mode) +{ + struct rte_eth_dev *dev; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); + dev = &rte_eth_devices[port_id]; + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_get, -ENOTSUP); + return eth_err(port_id, (*dev->dev_ops->fec_get)(dev, mode)); +} + +int +rte_eth_fec_set(uint16_t port_id, uint32_t mode) +{ + struct rte_eth_dev *dev; + + dev = &rte_eth_devices[port_id]; + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_set, -ENOTSUP); + return eth_err(port_id, (*dev->dev_ops->fec_set)(dev, mode)); +} + /* * Returns index into MAC address array of addr. Use 00:00:00:00:00:00 to find * an empty spot. diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index 645a186..104181d 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -1544,6 +1544,29 @@ struct rte_eth_dcb_info { struct rte_eth_dcb_tc_queue_mapping tc_queue; }; +/** + * This enum indicates the possible (forward error correction)FEC modes + * of an ethdev port. + */ +enum rte_eth_fec_mode { + RTE_ETH_FEC_NOFEC = 0, /**< FEC is off */ + RTE_ETH_FEC_AUTO, /**< FEC autonegotiation modes */ + RTE_ETH_FEC_BASER, /**< FEC using common algorithm */ + RTE_ETH_FEC_RS, /**< FEC using RS algorithm */ +}; + +/* Translate from FEC mode to FEC capa */ +#define RTE_ETH_FEC_MODE_TO_CAPA(x) (1U << (x)) + +/* This macro indicates FEC capa mask*/ +#define RTE_ETH_FEC_MODE_CAPA_MASK(x) (1U << (RTE_ETH_FEC_ ## x)) + +/* A structure used to get capabilities per link speed */ +struct rte_eth_fec_capa { + uint32_t speed; /**< Link speed (see ETH_SPEED_NUM_*) */ + uint32_t capa; /**< FEC capabilities bitmask (see RTE_FEC_CAPA_*) */ +}; + #define RTE_ETH_ALL RTE_MAX_ETHPORTS /* Macros to check for valid port */ @@ -3397,6 +3420,74 @@ int rte_eth_led_on(uint16_t port_id); int rte_eth_led_off(uint16_t port_id); /** + * @warning + * @b EXPERIMENTAL: this API may change, or be removed, without prior notice + * + * Get Forward Error Correction(FEC) capability. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param num + * the num is in/out with a number of elements in an array. + * @param speed_fec_capa + * speed_fec_capa is out only with per-speed capabilities. + * + * @return + * - (0) if successful. + * - (-ENOTSUP) if underlying hardware OR driver doesn't support. + * that operation. + * - (-EIO) if device is removed. + * - (-ENODEV) if *port_id* invalid. + * - (-EINVAL) if *num* or *speed_fec_capa* invalid + */ +__rte_experimental +int rte_eth_fec_get_capability(uint16_t port_id, uint32_t *num, + struct rte_eth_fec_capa *speed_fec_capa); + +/** + * @warning + * @b EXPERIMENTAL: this API may change, or be removed, without prior notice + * + * Get current Forward Error Correction(FEC) mode. + * If link is down and AUTO is enabled, AUTO is returned, otherwise, + * configured FEC mode is returned. + * If link is up, current FEC mode is returned. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param mode + * returns the FEC mode from the device. + * @return + * - (0) if successful. + * - (-ENOTSUP) if underlying hardware OR driver doesn't support. + * that operation. + * - (-EIO) if device is removed. + * - (-ENODEV) if *port_id* invalid. + */ +__rte_experimental +int rte_eth_fec_get(uint16_t port_id, uint32_t *mode); + +/** + * @warning + * @b EXPERIMENTAL: this API may change, or be removed, without prior notice + * + * Set Forward Error Correction(FEC) mode. + * + * @param port_id + * The port identifier of the Ethernet device. + * @param mode + * the FEC mode. + * @return + * - (0) if successful. + * - (-EINVAL) if the FEC mode is not valid. + * - (-ENOTSUP) if underlying hardware OR driver doesn't support. + * - (-EIO) if device is removed. + * - (-ENODEV) if *port_id* invalid. + */ +__rte_experimental +int rte_eth_fec_set(uint16_t port_id, uint32_t mode); + +/** * Get current status of the Ethernet link flow control for Ethernet device * * @param port_id diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h index 23cc1e0..625b8c5 100644 --- a/lib/librte_ethdev/rte_ethdev_driver.h +++ b/lib/librte_ethdev/rte_ethdev_driver.h @@ -575,6 +575,81 @@ typedef int (*eth_tx_hairpin_queue_setup_t) const struct rte_eth_hairpin_conf *hairpin_conf); /** + * @internal + * Get Forward Error Correction(FEC) capability. + * + * @param dev + * ethdev handle of port. + * @param num + * the num is in/out with a number of elements in an array. + * @param speed_fec_capa + * speed_fec_capa is out only with per-speed capabilities. + * + * @return + * Negative errno value on error, 0 on success. + * + * @retval 0 + * Success, get FEC success. + * @retval -ENOTSUP + * operation is not supported. + * @retval -EIO + * device is removed. + * @retval -ENODEV + * Device is gone. + * @retval -EINVAL + * *num* or *speed_fec_capa* invalid. + */ +typedef int (*eth_fec_get_capability_t)(struct rte_eth_dev *dev, uint32_t *num, + struct rte_eth_fec_capa *speed_fec_capa); + +/** + * @internal + * Get Forward Error Correction(FEC) mode. + * + * @param dev + * ethdev handle of port. + * @param mode + * returns the FEC mode from the device. + * + * @return + * Negative errno value on error, 0 on success. + * + * @retval 0 + * Success, get FEC success. + * @retval -ENOTSUP + * operation is not supported. + * @retval -EIO + * device is removed. + * @retval -ENODEV + * Device is gone. + */ +typedef int (*eth_fec_get_t)(struct rte_eth_dev *dev, + uint32_t *mode); + +/** + * @internal + * Set Forward Error Correction(FEC) mode. + * + * @param dev + * ethdev handle of port. + * @param mode + * the FEC mode. + * + * @return + * Negative errno value on error, 0 on success. + * + * @retval 0 + * Success, set FEC success. + * @retval -ENOTSUP + * operation is not supported. + * @retval -EIO + * device is removed. + * @retval -ENODEV + * Device is gone. + */ +typedef int (*eth_fec_set_t)(struct rte_eth_dev *dev, uint32_t mode); + +/** * @internal A structure containing the functions exported by an Ethernet driver. */ struct eth_dev_ops { @@ -713,6 +788,13 @@ struct eth_dev_ops { /**< Set up device RX hairpin queue. */ eth_tx_hairpin_queue_setup_t tx_hairpin_queue_setup; /**< Set up device TX hairpin queue. */ + + eth_fec_get_capability_t fec_get_capability; + /**< Get Forward Error Correction(FEC) capability; */ + eth_fec_get_t fec_get; + /**< Get Forward Error Correction(FEC) mode; */ + eth_fec_set_t fec_set; + /**< Set Forward Error Correction(FEC) mode; */ }; /** diff --git a/lib/librte_ethdev/rte_ethdev_version.map b/lib/librte_ethdev/rte_ethdev_version.map index c95ef51..b9ace3a 100644 --- a/lib/librte_ethdev/rte_ethdev_version.map +++ b/lib/librte_ethdev/rte_ethdev_version.map @@ -229,6 +229,9 @@ EXPERIMENTAL { # added in 20.11 rte_eth_link_speed_to_str; rte_eth_link_to_str; + rte_eth_fec_get_capability; + rte_eth_fec_get; + rte_eth_fec_set; }; INTERNAL { -- 2.7.4