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compressdev: support hash operations

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- 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>
This commit is contained in:
Shally Verma 2018-04-27 14:24:01 +01:00 committed by Pablo de Lara
parent b342c57aae
commit 0d6717c437
1 changed files with 32 additions and 0 deletions
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32
lib/librte_compressdev/rte_comp.h
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@ -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_NONE = 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.
*/
};
/**
@ -272,6 +291,19 @@ 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