[dpdk-dev] [PATCH v4 10/13] compressdev: add compression service feature flags

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

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

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
 lib/librte_compressdev/rte_compressdev.c           | 31 +++++++++++++++
 lib/librte_compressdev/rte_compressdev.h           | 45 ++++++++++++++++++++++
 lib/librte_compressdev/rte_compressdev_version.map |  1 +
 3 files changed, 77 insertions(+)

diff --git a/lib/librte_compressdev/rte_compressdev.c b/lib/librte_compressdev/rte_compressdev.c
index b962ccf23..43a26747b 100644
--- a/lib/librte_compressdev/rte_compressdev.c
+++ b/lib/librte_compressdev/rte_compressdev.c
@@ -77,6 +77,37 @@ rte_compressdev_get_feature_name(uint64_t flag)
 	}
 }
 
+const char * __rte_experimental
+rte_comp_get_feature_name(uint64_t flag)
+{
+	switch (flag) {
+	case RTE_COMP_FF_STATEFUL_COMPRESSION:
+		return "STATEFUL_COMPRESSION";
+	case RTE_COMP_FF_STATEFUL_DECOMPRESSION:
+		return "STATEFUL_DECOMPRESSION";
+	case RTE_COMP_FF_MBUF_SCATTER_GATHER:
+		return "MBUF_SCATTER_GATHER";
+	case RTE_COMP_FF_MULTI_PKT_CHECKSUM:
+		return "MULTI_PKT_CHECKSUM";
+	case RTE_COMP_FF_ADLER32_CHECKSUM:
+		return "ADLER32_CHECKSUM";
+	case RTE_COMP_FF_CRC32_CHECKSUM:
+		return "CRC32_CHECKSUM";
+	case RTE_COMP_FF_CRC32_ADLER32_CHECKSUM:
+		return "CRC32_ADLER32_CHECKSUM";
+	case RTE_COMP_FF_NONCOMPRESSED_BLOCKS:
+		return "NONCOMPRESSED_BLOCKS";
+	case RTE_COMP_FF_SHA1_HASH:
+		return "SHA1_HASH";
+	case RTE_COMP_FF_SHA2_SHA256_HASH:
+		return "SHA2_SHA256_HASH";
+	case RTE_COMP_FF_SHAREABLE_PRIV_XFORM:
+		return "SHAREABLE_PRIV_XFORM";
+	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 72c46dd96..02a6c531c 100644
--- a/lib/librte_compressdev/rte_compressdev.h
+++ b/lib/librte_compressdev/rte_compressdev.h
@@ -54,6 +54,39 @@ extern int compressdev_logtype;
 #define	RTE_COMPDEV_FF_CPU_NEON			(1ULL << 5)
 /**< Utilises CPU NEON instructions */
 
+/**
+ * compression service feature flags
+ *
+ * @note New features flags should be added to the end of the list
+ *
+ * Keep these flags synchronised with rte_comp_get_feature_name()
+ */
+#define RTE_COMP_FF_STATEFUL_COMPRESSION	(1ULL << 0)
+/**< Stateful compression is supported */
+#define RTE_COMP_FF_STATEFUL_DECOMPRESSION	(1ULL << 1)
+/**< Stateful decompression is supported */
+#define	RTE_COMP_FF_MBUF_SCATTER_GATHER		(1ULL << 2)
+/**< Scatter-gather mbufs are supported */
+#define RTE_COMP_FF_ADLER32_CHECKSUM		(1ULL << 3)
+/**< Adler-32 Checksum is supported */
+#define RTE_COMP_FF_CRC32_CHECKSUM		(1ULL << 4)
+/**< CRC32 Checksum is supported */
+#define RTE_COMP_FF_CRC32_ADLER32_CHECKSUM	(1ULL << 5)
+/**< Adler-32/CRC32 Checksum is supported */
+#define RTE_COMP_FF_MULTI_PKT_CHECKSUM		(1ULL << 6)
+/**< Generation of checksum across multiple stateless packets is supported */
+#define RTE_COMP_FF_SHA1_HASH			(1ULL << 7)
+/**< SHA1 Hash is supported */
+#define RTE_COMP_FF_SHA2_SHA256_HASH		(1ULL << 8)
+/**< SHA256 Hash of SHA2 family is supported */
+#define RTE_COMP_FF_NONCOMPRESSED_BLOCKS	(1ULL << 9)
+/**< Creation of non-compressed blocks using RTE_COMP_LEVEL_NONE is supported */
+#define RTE_COMP_FF_SHAREABLE_PRIV_XFORM	(1ULL << 10)
+/**< Private xforms created by the PMD can be shared
+ * across multiple stateless operations. If not set, then app needs
+ * to create as many priv_xforms as many expected in flight.
+ */
+
 /**
  * Get the name of a compress device feature flag.
  *
@@ -66,6 +99,18 @@ extern int compressdev_logtype;
 const char * __rte_experimental
 rte_compressdev_get_feature_name(uint64_t flag);
 
+/**
+ * Get the name of a compress service 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_comp_get_feature_name(uint64_t flag);
+
 /**  comp device information */
 struct rte_compressdev_info {
 	const char *driver_name;		/**< Driver name. */
diff --git a/lib/librte_compressdev/rte_compressdev_version.map b/lib/librte_compressdev/rte_compressdev_version.map
index 01ddc7a07..f538b9f57 100644
--- a/lib/librte_compressdev/rte_compressdev_version.map
+++ b/lib/librte_compressdev/rte_compressdev_version.map
@@ -33,6 +33,7 @@ EXPERIMENTAL {
 	rte_compressdev_stop;
 	rte_compressdev_stream_create;
 	rte_compressdev_stream_free;
+	rte_comp_get_feature_name;
 	rte_comp_op_pool_create;
 
         local: *;
-- 
2.14.3