[dpdk-dev] [PATCH] compressdev: add feature flag to specify where processing is done

[Fiona Trahe <fiona.trahe@intel.com>]

A new device feature flag, RTE_COMPDEV_FF_SW_OP_DONE_IN_DEQUEUE
is added. A PMD which processes operations using a software
acceleration engine should set this if the bulk of the
processing is done during the dequeue. It should leave it
cleared if the bulk of the processing is done during the
enqueue (default).
An application may find this useful for tuning.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
---
 lib/librte_compressdev/rte_compressdev.c | 2 ++
 lib/librte_compressdev/rte_compressdev.h | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/lib/librte_compressdev/rte_compressdev.c b/lib/librte_compressdev/rte_compressdev.c
index 10101eb..90d6862 100644
--- a/lib/librte_compressdev/rte_compressdev.c
+++ b/lib/librte_compressdev/rte_compressdev.c
@@ -66,6 +66,8 @@ rte_compressdev_get_feature_name(uint64_t flag)
 		return "CPU_AVX512";
 	case RTE_COMPDEV_FF_CPU_NEON:
 		return "CPU_NEON";
+	case RTE_COMPDEV_FF_SW_OP_DONE_IN_DEQUEUE:
+		return "OP_DONE_IN_DEQ";
 	default:
 		return NULL;
 	}
diff --git a/lib/librte_compressdev/rte_compressdev.h b/lib/librte_compressdev/rte_compressdev.h
index 7b68170..0fc8ed1 100644
--- a/lib/librte_compressdev/rte_compressdev.h
+++ b/lib/librte_compressdev/rte_compressdev.h
@@ -73,6 +73,14 @@ rte_compressdev_capability_get(uint8_t dev_id,
 /**< Utilises CPU SIMD AVX512 instructions */
 #define	RTE_COMPDEV_FF_CPU_NEON			(1ULL << 5)
 /**< Utilises CPU NEON instructions */
+#define RTE_COMPDEV_FF_SW_OP_DONE_IN_DEQUEUE	(1ULL << 6)
+/**< Only applicable when RTE_COMPDEV_FF_HW_ACCELERATED flag
+ * is not set. A PMD which processes operations using a software
+ * acceleration engine should set this if the bulk of the
+ * processing is done during the dequeue. It should leave it
+ * cleared if the processing is done during the enqueue (default).
+ * An application may find this useful for tuning.
+ */
 
 /**
  * Get the name of a compress device feature flag.
-- 
2.7.4