[dpdk-dev] [PATCH v4 09/13] compressdev: add device feature flags

Pablo de Lara pablo.de.lara.guarch at intel.com
Sun Apr 8 14:58:17 CEST 2018


From: Fiona Trahe <fiona.trahe at intel.com>

Signed-off-by: Fiona Trahe <fiona.trahe at intel.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
Signed-off-by: Shally Verma <shally.verma at caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta at caviumnetworks.com>
---
 lib/librte_compressdev/rte_compressdev.c           | 21 ++++++++++++++
 lib/librte_compressdev/rte_compressdev.h           | 33 ++++++++++++++++++++++
 lib/librte_compressdev/rte_compressdev_version.map |  1 +
 3 files changed, 55 insertions(+)

diff --git a/lib/librte_compressdev/rte_compressdev.c b/lib/librte_compressdev/rte_compressdev.c
index 433973aaa..b962ccf23 100644
--- a/lib/librte_compressdev/rte_compressdev.c
+++ b/lib/librte_compressdev/rte_compressdev.c
@@ -56,6 +56,27 @@ static struct rte_compressdev_global compressdev_globals = {
 
 struct rte_compressdev_global *rte_compressdev_globals = &compressdev_globals;
 
+const char * __rte_experimental
+rte_compressdev_get_feature_name(uint64_t flag)
+{
+	switch (flag) {
+	case RTE_COMPDEV_FF_HW_ACCELERATED:
+		return "HW_ACCELERATED";
+	case RTE_COMPDEV_FF_CPU_SSE:
+		return "CPU_SSE";
+	case RTE_COMPDEV_FF_CPU_AVX:
+		return "CPU_AVX";
+	case RTE_COMPDEV_FF_CPU_AVX2:
+		return "CPU_AVX2";
+	case RTE_COMPDEV_FF_CPU_AVX512:
+		return "CPU_AVX512";
+	case RTE_COMPDEV_FF_CPU_NEON:
+		return "CPU_NEON";
+	default:
+		return NULL;
+	}
+}
+
 struct rte_compressdev * __rte_experimental
 rte_compressdev_pmd_get_dev(uint8_t dev_id)
 {
diff --git a/lib/librte_compressdev/rte_compressdev.h b/lib/librte_compressdev/rte_compressdev.h
index 0e148dd30..72c46dd96 100644
--- a/lib/librte_compressdev/rte_compressdev.h
+++ b/lib/librte_compressdev/rte_compressdev.h
@@ -34,10 +34,43 @@ extern int compressdev_logtype;
 #define RTE_COMPRESSDEV_NAME_MAX_LEN	(64)
 /**< Max length of name of comp PMD */
 
+/**
+ * compression device supported feature flags
+ *
+ * @note New features flags should be added to the end of the list
+ *
+ * Keep these flags synchronised with rte_compressdev_get_feature_name()
+ */
+#define	RTE_COMPDEV_FF_HW_ACCELERATED		(1ULL << 0)
+/**< Operations are off-loaded to an external hardware accelerator */
+#define	RTE_COMPDEV_FF_CPU_SSE			(1ULL << 1)
+/**< Utilises CPU SIMD SSE instructions */
+#define	RTE_COMPDEV_FF_CPU_AVX			(1ULL << 2)
+/**< Utilises CPU SIMD AVX instructions */
+#define	RTE_COMPDEV_FF_CPU_AVX2			(1ULL << 3)
+/**< Utilises CPU SIMD AVX2 instructions */
+#define	RTE_COMPDEV_FF_CPU_AVX512		(1ULL << 4)
+/**< Utilises CPU SIMD AVX512 instructions */
+#define	RTE_COMPDEV_FF_CPU_NEON			(1ULL << 5)
+/**< Utilises CPU NEON instructions */
+
+/**
+ * Get the name of a compress device feature flag.
+ *
+ * @param flag
+ *   The mask describing the flag
+ *
+ * @return
+ *   The name of this flag, or NULL if it's not a valid feature flag.
+ */
+const char * __rte_experimental
+rte_compressdev_get_feature_name(uint64_t flag);
+
 /**  comp device information */
 struct rte_compressdev_info {
 	const char *driver_name;		/**< Driver name. */
 	uint8_t driver_id;			/**< Driver identifier */
+	uint64_t feature_flags;			/**< Feature flags */
 	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 58cb5205a..01ddc7a07 100644
--- a/lib/librte_compressdev/rte_compressdev_version.map
+++ b/lib/librte_compressdev/rte_compressdev_version.map
@@ -12,6 +12,7 @@ EXPERIMENTAL {
 	rte_compressdev_devices_get;
 	rte_compressdev_driver_id_get;
 	rte_compressdev_driver_name_get;
+	rte_compressdev_get_feature_name;
 	rte_compressdev_info_get;
 	rte_compressdev_is_valid_dev;
 	rte_compressdev_name_get;
-- 
2.14.3



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