[dpdk-dev] [PATCH 3/3] lib/librte_cryptodev: change GMAC API comments

[Arek Kusztal <arkadiuszx.kusztal@intel.com>]

File rte_crypto_sym.h GMAC API comments need to be changed
to comply to the GMAC specification. Main areas of changes is
aad pointer and aad len which now will be used to
provide plaintext.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 lib/librte_cryptodev/rte_crypto_sym.h | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/lib/librte_cryptodev/rte_crypto_sym.h b/lib/librte_cryptodev/rte_crypto_sym.h
index d9bd821..770a868 100644
--- a/lib/librte_cryptodev/rte_crypto_sym.h
+++ b/lib/librte_cryptodev/rte_crypto_sym.h
@@ -307,8 +307,8 @@ struct rte_crypto_auth_xform {
 	 * @note
 	 *  For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC) mode of operation
 	 *  this field is not used and should be set to 0. Instead the length
-	 *  of the AAD data is specified in the message length to hash field of
-	 *  the rte_crypto_sym_op_data structure.
+	 *  of the AAD data is specified in additional authentication data
+	 *  length field of the rte_crypto_sym_op_data structure
 	 */
 };
 
@@ -482,8 +482,9 @@ struct rte_crypto_sym_op {
 			  * should be set instead.
 			  *
 			  * @note For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC)
-			  * mode of operation, this field specifies the start
-			  * of the AAD data in the source buffer.
+			  * mode of operation, this field is set to 0. aad data
+			  * pointer of rte_crypto_sym_op_data structure is
+			  * used instead
 			  *
 			  * @note
 			  * For Snow3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2
@@ -502,8 +503,8 @@ struct rte_crypto_sym_op {
 			  *
 			  * @note
 			  * For AES-GMAC @ref RTE_CRYPTO_AUTH_AES_GMAC mode
-			  * of operation, this field specifies the length of
-			  * the AAD data in the source buffer.
+			  * of operation, this field is set to 0.
+			  * Auth.aad.length is used instead.
 			  *
 			  * @note
 			  * For Snow3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2
@@ -589,9 +590,7 @@ struct rte_crypto_sym_op {
 			 *
 			 * @note
 			 * For AES-GMAC (@ref RTE_CRYPTO_AUTH_AES_GMAC) mode of
-			 * operation, this field is not used and should be set
-			 * to 0. Instead the AAD data should be placed in the
-			 * source buffer.
+			 * operation, this field is used to pass plaintext.
 			 */
 			phys_addr_t phys_addr;	/**< physical address */
 			uint16_t length;	/**< Length of digest */
-- 
2.1.0