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From: Pablo de Lara <pablo.de.lara.guarch@intel.com>
To: dev@dpdk.org
Cc: fiona.trahe@intel.com, shally.verma@cavium.com, ahmed.mansour@nxp.com,
Ashish.Gupta@cavium.com, Shally Verma <shally.verma@caviumnetworks.com>,
Sunila Sahu <sunila.sahu@caviumnetworks.com>,
Ashish Gupta <ashish.gupta@caviumnetworks.com>
Date: Fri, 13 Apr 2018 19:18:27 +0100
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<20180413181832.11335-1-pablo.de.lara.guarch@intel.com>
Subject: [dpdk-dev] [PATCH v5 08/13] compressdev: support hash operations
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From: Shally Verma <shally.verma@caviumnetworks.com>
- Added hash algo enumeration and params in xform and rte_comp_op
- Updated compress/decompress xform to input hash algorithm
- Updated struct rte_comp_op to input hash buffer
User in capability query will know about support hashes via
device info comp_feature_flag. If supported, application can initialize
desired algorithm enumeration in xform structure and pass valid hash
buffer during enqueue_burst().
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
lib/librte_compressdev/rte_comp.h | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/lib/librte_compressdev/rte_comp.h b/lib/librte_compressdev/rte_comp.h
index 5020aed33..639c577b6 100644
--- a/lib/librte_compressdev/rte_comp.h
+++ b/lib/librte_compressdev/rte_comp.h
@@ -63,6 +63,17 @@ enum rte_comp_algorithm {
RTE_COMP_ALGO_LIST_END
};
+/** Compression Hash Algorithms */
+enum rte_comp_hash_algorithm {
+ RTE_COMP_HASH_ALGO_UNSPECIFIED = 0,
+ /**< No hash */
+ RTE_COMP_HASH_ALGO_SHA1,
+ /**< SHA1 hash algorithm */
+ RTE_COMP_HASH_ALGO_SHA2_256,
+ /**< SHA256 hash algorithm of SHA2 family */
+ RTE_COMP_HASH_ALGO_LIST_END
+};
+
/**< Compression Level.
* The number is interpreted by each PMD differently. However, lower numbers
* give fastest compression, at the expense of compression ratio while
@@ -172,6 +183,10 @@ struct rte_comp_compress_xform {
*/
enum rte_comp_checksum_type chksum;
/**< Type of checksum to generate on the uncompressed data */
+ enum rte_comp_hash_algorithm hash_algo;
+ /**< Hash algorithm to be used with compress operation. Hash is always
+ * done on plaintext.
+ */
};
/**
@@ -187,6 +202,10 @@ struct rte_comp_decompress_xform {
* compressed data. If window size can't be supported by the PMD then
* setup of stream or private_xform should fail.
*/
+ enum rte_comp_hash_algorithm hash_algo;
+ /**< Hash algorithm to be used with decompress operation. Hash is always
+ * done on plaintext.
+ */
};
/**
@@ -278,6 +297,19 @@ struct rte_comp_op {
* decompress direction.
*/
} dst;
+ struct {
+ uint8_t *digest;
+ /**< Output buffer to store hash output, if enabled in xform.
+ * Buffer would contain valid value only after an op with
+ * flush flag = RTE_COMP_FLUSH_FULL/FLUSH_FINAL is processed
+ * successfully.
+ *
+ * Length of buffer should be contiguous and large enough to
+ * accommodate digest produced by specific hash algo.
+ */
+ rte_iova_t iova_addr;
+ /**< IO address of the buffer */
+ } hash;
enum rte_comp_flush_flag flush_flag;
/**< Defines flush characteristics for the output data.
* Only applicable in compress direction
--
2.14.3