[dpdk-dev] [PATCH v5 09/13] compressdev: add device feature flags

[Pablo de Lara]

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 79dc8f6e5..8e6b08f38 100644
--- a/lib/librte_compressdev/rte_compressdev.c
+++ b/lib/librte_compressdev/rte_compressdev.c
@@ -31,6 +31,27 @@ 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;
+	}
+}
+
 static struct rte_compressdev *
 rte_compressdev_get_dev(uint8_t dev_id)
 {
diff --git a/lib/librte_compressdev/rte_compressdev.h b/lib/librte_compressdev/rte_compressdev.h
index 5d4218f8c..1559d96ba 100644
--- a/lib/librte_compressdev/rte_compressdev.h
+++ b/lib/librte_compressdev/rte_compressdev.h
@@ -21,9 +21,42 @@ extern "C" {
 
 #include "rte_comp.h"
 
+/**
+ * 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. */
+	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 ca4d9d3d8..f9223bcfe 100644
--- a/lib/librte_compressdev/rte_compressdev_version.map
+++ b/lib/librte_compressdev/rte_compressdev_version.map
@@ -9,6 +9,7 @@ EXPERIMENTAL {
 	rte_compressdev_dequeue_burst;
 	rte_compressdev_devices_get;
 	rte_compressdev_enqueue_burst;
+	rte_compressdev_get_feature_name;
 	rte_compressdev_info_get;
 	rte_compressdev_name_get;
 	rte_compressdev_pmd_allocate;
-- 
2.14.3