From 5d432f364078f04fb476ae910773ca4cbfee8ef2 Mon Sep 17 00:00:00 2001 From: Fiona Trahe Date: Fri, 27 Apr 2018 14:24:05 +0100 Subject: [PATCH] compressdev: add device capabilities Added structure which each PMD will fill out, providing the capabilities of each driver (containing mainly which compression services it supports). Signed-off-by: Fiona Trahe Signed-off-by: Pablo de Lara Signed-off-by: Shally Verma Signed-off-by: Ashish Gupta --- lib/librte_compressdev/rte_compressdev.c | 23 ++++++++++++ lib/librte_compressdev/rte_compressdev.h | 35 +++++++++++++++++++ .../rte_compressdev_version.map | 1 + 3 files changed, 59 insertions(+) diff --git a/lib/librte_compressdev/rte_compressdev.c b/lib/librte_compressdev/rte_compressdev.c index 855385e106..2d7127ce23 100644 --- a/lib/librte_compressdev/rte_compressdev.c +++ b/lib/librte_compressdev/rte_compressdev.c @@ -31,6 +31,29 @@ static struct rte_compressdev_global compressdev_globals = { struct rte_compressdev_global *rte_compressdev_globals = &compressdev_globals; +const struct rte_compressdev_capabilities * __rte_experimental +rte_compressdev_capability_get(uint8_t dev_id, + enum rte_comp_algorithm algo) +{ + const struct rte_compressdev_capabilities *capability; + struct rte_compressdev_info dev_info; + int i = 0; + + if (dev_id >= compressdev_globals.nb_devs) { + COMPRESSDEV_LOG(ERR, "Invalid dev_id=%d", dev_id); + return NULL; + } + rte_compressdev_info_get(dev_id, &dev_info); + + while ((capability = &dev_info.capabilities[i++])->algo != + RTE_COMP_ALGO_UNSPECIFIED){ + if (capability->algo == algo) + return capability; + } + + return NULL; +} + const char * __rte_experimental rte_compressdev_get_feature_name(uint64_t flag) { diff --git a/lib/librte_compressdev/rte_compressdev.h b/lib/librte_compressdev/rte_compressdev.h index 5ad9269766..d52103e159 100644 --- a/lib/librte_compressdev/rte_compressdev.h +++ b/lib/librte_compressdev/rte_compressdev.h @@ -21,6 +21,39 @@ extern "C" { #include "rte_comp.h" +/** + * Parameter log base 2 range description. + * Final value will be 2^value. + */ +struct rte_param_log2_range { + uint8_t min; /**< Minimum log2 value */ + uint8_t max; /**< Maximum log2 value */ + uint8_t increment; + /**< If a range of sizes are supported, + * this parameter is used to indicate + * increments in base 2 log byte value + * that are supported between the minimum and maximum + */ +}; + +/** Structure used to capture a capability of a comp device */ +struct rte_compressdev_capabilities { + enum rte_comp_algorithm algo; + /* Compression algorithm */ + uint64_t comp_feature_flags; + /**< Bitmask of flags for compression service features */ + struct rte_param_log2_range window_size; + /**< Window size range in base two log byte values */ +}; + +/** Macro used at end of comp PMD list */ +#define RTE_COMP_END_OF_CAPABILITIES_LIST() \ + { RTE_COMP_ALGO_UNSPECIFIED } + +const struct rte_compressdev_capabilities * __rte_experimental +rte_compressdev_capability_get(uint8_t dev_id, + enum rte_comp_algorithm algo); + /** * compression device supported feature flags * @@ -57,6 +90,8 @@ rte_compressdev_get_feature_name(uint64_t flag); struct rte_compressdev_info { const char *driver_name; /**< Driver name. */ uint64_t feature_flags; /**< Feature flags */ + const struct rte_compressdev_capabilities *capabilities; + /**< Array of devices supported capabilities */ uint16_t max_nb_queue_pairs; /**< Maximum number of queues pairs supported by device. * (If 0, there is no limit in maximum number of queue pairs) diff --git a/lib/librte_compressdev/rte_compressdev_version.map b/lib/librte_compressdev/rte_compressdev_version.map index 8e40046313..6c553341a3 100644 --- a/lib/librte_compressdev/rte_compressdev_version.map +++ b/lib/librte_compressdev/rte_compressdev_version.map @@ -3,6 +3,7 @@ EXPERIMENTAL { rte_compressdev_callback_register; rte_compressdev_callback_unregister; + rte_compressdev_capability_get; rte_compressdev_close; rte_compressdev_configure; rte_compressdev_count; -- 2.20.1