[dpdk-dev] [PATCH 1/2] crypto/qat: add aes-gcm J0 handling

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

This patch adds J0 capability to Intel QuickAssist Technology driver

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 drivers/crypto/qat/qat_sym_capabilities.h |  8 ++++----
 drivers/crypto/qat/qat_sym_session.c      | 11 ++++++++---
 drivers/crypto/qat/qat_sym_session.h      |  5 +++++
 3 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/crypto/qat/qat_sym_capabilities.h b/drivers/crypto/qat/qat_sym_capabilities.h
index 028a56c..36be80a 100644
--- a/drivers/crypto/qat/qat_sym_capabilities.h
+++ b/drivers/crypto/qat/qat_sym_capabilities.h
@@ -227,9 +227,9 @@
 					.increment = 1			\
 				},					\
 				.iv_size = {				\
-					.min = 12,			\
+					.min = 0,			\
 					.max = 12,			\
-					.increment = 0			\
+					.increment = 12			\
 				},					\
 			}, }						\
 		}, }							\
@@ -252,9 +252,9 @@
 					.increment = 4			\
 				},					\
 				.iv_size = {				\
-					.min = 12,			\
+					.min = 0,			\
 					.max = 12,			\
-					.increment = 0			\
+					.increment = 12			\
 				}					\
 			}, }						\
 		}, }							\
diff --git a/drivers/crypto/qat/qat_sym_session.c b/drivers/crypto/qat/qat_sym_session.c
index 4359f2f..b7ca846 100644
--- a/drivers/crypto/qat/qat_sym_session.c
+++ b/drivers/crypto/qat/qat_sym_session.c
@@ -653,6 +653,9 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 	uint8_t key_length = auth_xform->key.length;
 	session->aes_cmac = 0;
 
+	session->auth_iv.offset = auth_xform->iv.offset;
+	session->auth_iv.length = auth_xform->iv.length;
+
 	switch (auth_xform->algo) {
 	case RTE_CRYPTO_AUTH_SHA1_HMAC:
 		session->qat_hash_alg = ICP_QAT_HW_AUTH_ALGO_SHA1;
@@ -684,6 +687,8 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 		}
 		session->qat_mode = ICP_QAT_HW_CIPHER_CTR_MODE;
 		session->qat_hash_alg = ICP_QAT_HW_AUTH_ALGO_GALOIS_128;
+		if (session->auth_iv.length == 0)
+			session->auth_iv.length = AES_GCM_J0_LEN;
 
 		break;
 	case RTE_CRYPTO_AUTH_SNOW3G_UIA2:
@@ -723,9 +728,6 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 		return -EINVAL;
 	}
 
-	session->auth_iv.offset = auth_xform->iv.offset;
-	session->auth_iv.length = auth_xform->iv.length;
-
 	if (auth_xform->algo == RTE_CRYPTO_AUTH_AES_GMAC) {
 		if (auth_xform->op == RTE_CRYPTO_AUTH_OP_GENERATE) {
 			session->qat_cmd = ICP_QAT_FW_LA_CMD_CIPHER_HASH;
@@ -808,6 +810,9 @@ qat_sym_session_configure_aead(struct rte_cryptodev *dev,
 		}
 		session->qat_mode = ICP_QAT_HW_CIPHER_CTR_MODE;
 		session->qat_hash_alg = ICP_QAT_HW_AUTH_ALGO_GALOIS_128;
+		if (session->cipher_iv.length == 0)
+			session->cipher_iv.length = AES_GCM_J0_LEN;
+
 		break;
 	case RTE_CRYPTO_AEAD_AES_CCM:
 		if (qat_sym_validate_aes_key(aead_xform->key.length,
diff --git a/drivers/crypto/qat/qat_sym_session.h b/drivers/crypto/qat/qat_sym_session.h
index 98985d6..5a01c81 100644
--- a/drivers/crypto/qat/qat_sym_session.h
+++ b/drivers/crypto/qat/qat_sym_session.h
@@ -20,6 +20,11 @@
 
 #define KASUMI_F8_KEY_MODIFIER_4_BYTES   0x55555555
 
+/*
+ * AES-GCM J0 length
+ */
+#define AES_GCM_J0_LEN 16
+
 /* 3DES key sizes */
 #define QAT_3DES_KEY_SZ_OPT1 24 /* Keys are independent */
 #define QAT_3DES_KEY_SZ_OPT2 16 /* K3=K1 */
-- 
2.1.0