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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLUPR03MB1411 Subject: [dpdk-dev] [PATCH v3 04/11] rawdev: support for extended stats 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" Generic rawdev library cannot define a pre-defined set of stats for devices which are yet to be defined. This patch introduces the xstats support for rawdev so that any implementation can create its own statistics. Signed-off-by: Shreyansh Jain --- lib/librte_rawdev/rte_rawdev.c | 75 ++++++++++++++++++++++ lib/librte_rawdev/rte_rawdev.h | 105 +++++++++++++++++++++++++++++++ lib/librte_rawdev/rte_rawdev_pmd.h | 72 +++++++++++++++++++++ lib/librte_rawdev/rte_rawdev_version.map | 4 ++ 4 files changed, 256 insertions(+) diff --git a/lib/librte_rawdev/rte_rawdev.c b/lib/librte_rawdev/rte_rawdev.c index a6d937c34..d6c284554 100644 --- a/lib/librte_rawdev/rte_rawdev.c +++ b/lib/librte_rawdev/rte_rawdev.c @@ -245,6 +245,81 @@ rte_rawdev_dump(uint16_t dev_id, FILE *f) return (*dev->dev_ops->dump)(dev, f); } +static int +xstats_get_count(uint16_t dev_id) +{ + struct rte_rawdev *dev = &rte_rawdevs[dev_id]; + + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->xstats_get_names, -ENOTSUP); + return (*dev->dev_ops->xstats_get_names)(dev, NULL, 0); +} + +int __rte_experimental +rte_rawdev_xstats_names_get(uint16_t dev_id, + struct rte_rawdev_xstats_name *xstats_names, + unsigned int size) +{ + const struct rte_rawdev *dev; + int cnt_expected_entries; + + RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV); + + cnt_expected_entries = xstats_get_count(dev_id); + + if (xstats_names == NULL || cnt_expected_entries < 0 || + (int)size < cnt_expected_entries || size <= 0) + return cnt_expected_entries; + + dev = &rte_rawdevs[dev_id]; + + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->xstats_get_names, -ENOTSUP); + return (*dev->dev_ops->xstats_get_names)(dev, xstats_names, size); +} + +/* retrieve rawdev extended statistics */ +int __rte_experimental +rte_rawdev_xstats_get(uint16_t dev_id, + const unsigned int ids[], + uint64_t values[], + unsigned int n) +{ + RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV); + const struct rte_rawdev *dev = &rte_rawdevs[dev_id]; + + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->xstats_get, -ENOTSUP); + return (*dev->dev_ops->xstats_get)(dev, ids, values, n); +} + +uint64_t __rte_experimental +rte_rawdev_xstats_by_name_get(uint16_t dev_id, + const char *name, + unsigned int *id) +{ + RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0); + const struct rte_rawdev *dev = &rte_rawdevs[dev_id]; + unsigned int temp = -1; + + if (id != NULL) + *id = (unsigned int)-1; + else + id = &temp; /* driver never gets a NULL value */ + + /* implemented by driver */ + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->xstats_get_by_name, -ENOTSUP); + return (*dev->dev_ops->xstats_get_by_name)(dev, name, id); +} + +int __rte_experimental +rte_rawdev_xstats_reset(uint16_t dev_id, + const uint32_t ids[], uint32_t nb_ids) +{ + RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL); + struct rte_rawdev *dev = &rte_rawdevs[dev_id]; + + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->xstats_reset, -ENOTSUP); + return (*dev->dev_ops->xstats_reset)(dev, ids, nb_ids); +} + int __rte_experimental rte_rawdev_start(uint16_t dev_id) { diff --git a/lib/librte_rawdev/rte_rawdev.h b/lib/librte_rawdev/rte_rawdev.h index b4f9aee37..8e3d72273 100644 --- a/lib/librte_rawdev/rte_rawdev.h +++ b/lib/librte_rawdev/rte_rawdev.h @@ -408,6 +408,111 @@ rte_rawdev_dequeue_buffers(uint16_t dev_id, unsigned int count, rte_rawdev_obj_t context); +/** Maximum name length for extended statistics counters */ +#define RTE_RAW_DEV_XSTATS_NAME_SIZE 64 + +/** + * A name-key lookup element for extended statistics. + * + * This structure is used to map between names and ID numbers + * for extended ethdev statistics. + */ +struct rte_rawdev_xstats_name { + char name[RTE_RAW_DEV_XSTATS_NAME_SIZE]; +}; + +/** + * Retrieve names of extended statistics of a raw device. + * + * @param dev_id + * The identifier of the raw device. + * @param[out] xstats_names + * Block of memory to insert names into. Must be at least size in capacity. + * If set to NULL, function returns required capacity. + * @param size + * Capacity of xstats_names (number of names). + * @return + * - positive value lower or equal to size: success. The return value + * is the number of entries filled in the stats table. + * - positive value higher than size: error, the given statistics table + * is too small. The return value corresponds to the size that should + * be given to succeed. The entries in the table are not valid and + * shall not be used by the caller. + * - negative value on error: + * -ENODEV for invalid *dev_id* + * -ENOTSUP if the device doesn't support this function. + */ +int __rte_experimental +rte_rawdev_xstats_names_get(uint16_t dev_id, + struct rte_rawdev_xstats_name *xstats_names, + unsigned int size); + +/** + * Retrieve extended statistics of a raw device. + * + * @param dev_id + * The identifier of the device. + * @param ids + * The id numbers of the stats to get. The ids can be got from the stat + * position in the stat list from rte_rawdev_get_xstats_names(), or + * by using rte_rawdev_get_xstats_by_name() + * @param[out] values + * The values for each stats request by ID. + * @param n + * The number of stats requested + * @return + * - positive value: number of stat entries filled into the values array + * - negative value on error: + * -ENODEV for invalid *dev_id* + * -ENOTSUP if the device doesn't support this function. + */ +int __rte_experimental +rte_rawdev_xstats_get(uint16_t dev_id, + const unsigned int ids[], + uint64_t values[], + unsigned int n); + +/** + * Retrieve the value of a single stat by requesting it by name. + * + * @param dev_id + * The identifier of the device + * @param name + * The stat name to retrieve + * @param[out] id + * If non-NULL, the numerical id of the stat will be returned, so that further + * requests for the stat can be got using rte_rawdev_xstats_get, which will + * be faster as it doesn't need to scan a list of names for the stat. + * If the stat cannot be found, the id returned will be (unsigned)-1. + * @return + * - positive value or zero: the stat value + * - negative value: -EINVAL if stat not found, -ENOTSUP if not supported. + */ +uint64_t __rte_experimental +rte_rawdev_xstats_by_name_get(uint16_t dev_id, + const char *name, + unsigned int *id); + +/** + * Reset the values of the xstats of the selected component in the device. + * + * @param dev_id + * The identifier of the device + * @param ids + * Selects specific statistics to be reset. When NULL, all statistics + * will be reset. If non-NULL, must point to array of at least + * *nb_ids* size. + * @param nb_ids + * The number of ids available from the *ids* array. Ignored when ids is NULL. + * @return + * - zero: successfully reset the statistics to zero + * - negative value: -EINVAL invalid parameters, -ENOTSUP if not supported. + */ +int __rte_experimental +rte_rawdev_xstats_reset(uint16_t dev_id, + const uint32_t ids[], + uint32_t nb_ids); + #ifdef __cplusplus } #endif diff --git a/lib/librte_rawdev/rte_rawdev_pmd.h b/lib/librte_rawdev/rte_rawdev_pmd.h index da891dc4d..2ef380988 100644 --- a/lib/librte_rawdev/rte_rawdev_pmd.h +++ b/lib/librte_rawdev/rte_rawdev_pmd.h @@ -351,6 +351,69 @@ typedef int (*rawdev_set_attr_t)(struct rte_rawdev *dev, const char *attr_name, const uint64_t attr_value); +/** + * Retrieve a set of statistics from device. + * Note: Being a raw device, the stats are specific to the device being + * implemented thus represented as xstats. + * + * @param dev + * Raw device pointer + * @param ids + * The stat ids to retrieve + * @param values + * The returned stat values + * @param n + * The number of id values and entries in the values array + * @return + * The number of stat values successfully filled into the values array + */ +typedef int (*rawdev_xstats_get_t)(const struct rte_rawdev *dev, + const unsigned int ids[], uint64_t values[], unsigned int n); + +/** + * Resets the statistic values in xstats for the device. + */ +typedef int (*rawdev_xstats_reset_t)(struct rte_rawdev *dev, + const uint32_t ids[], + uint32_t nb_ids); + +/** + * Get names of extended stats of an raw device + * + * @param dev + * Raw device pointer + * @param xstats_names + * Array of name values to be filled in + * @param size + * Number of values in the xstats_names array + * @return + * When size >= the number of stats, return the number of stat values filled + * into the array. + * When size < the number of available stats, return the number of stats + * values, and do not fill in any data into xstats_names. + */ +typedef int (*rawdev_xstats_get_names_t)(const struct rte_rawdev *dev, + struct rte_rawdev_xstats_name *xstats_names, + unsigned int size); + +/** + * Get value of one stats and optionally return its id + * + * @param dev + * Raw device pointer + * @param name + * The name of the stat to retrieve + * @param id + * Pointer to an unsigned int where we store the stat-id. + * This pointer may be null if the id is not required. + * @return + * The value of the stat, or (uint64_t)-1 if the stat is not found. + * If the stat is not found, the id value will be returned as (unsigned)-1, + * if id pointer is non-NULL + */ +typedef uint64_t (*rawdev_xstats_get_by_name_t)(const struct rte_rawdev *dev, + const char *name, + unsigned int *id); /** Rawdevice operations function pointer table */ struct rte_rawdev_ops { /**< Get device info. */ @@ -386,6 +449,15 @@ struct rte_rawdev_ops { rawdev_get_attr_t attr_get; /**< Set an attribute managed by the implementation */ rawdev_set_attr_t attr_set; + + /**< Get extended device statistics. */ + rawdev_xstats_get_t xstats_get; + /**< Get names of extended stats. */ + rawdev_xstats_get_names_t xstats_get_names; + /**< Get one value by name. */ + rawdev_xstats_get_by_name_t xstats_get_by_name; + /**< Reset the statistics values in xstats. */ + rawdev_xstats_reset_t xstats_reset; }; /** diff --git a/lib/librte_rawdev/rte_rawdev_version.map b/lib/librte_rawdev/rte_rawdev_version.map index bafe2c5de..469b78d81 100644 --- a/lib/librte_rawdev/rte_rawdev_version.map +++ b/lib/librte_rawdev/rte_rawdev_version.map @@ -19,6 +19,10 @@ EXPERIMENTAL { rte_rawdev_socket_id; rte_rawdev_start; rte_rawdev_stop; + rte_rawdev_xstats_by_name_get; + rte_rawdev_xstats_get; + rte_rawdev_xstats_names_get; + rte_rawdev_xstats_reset; rte_rawdevs; local: *;