[dpdk-dev] [PATCH 10/15] crypto/qat: add gmac in legacy mode on fourth generation

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

Add AES-GMAC algorithm in legacy mode to generation 4 devices.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 drivers/crypto/qat/qat_sym_capabilities.h | 27 ++++++++++++++++++++++-
 drivers/crypto/qat/qat_sym_session.c      |  9 +++++++-
 drivers/crypto/qat/qat_sym_session.h      |  2 ++
 3 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/qat/qat_sym_capabilities.h b/drivers/crypto/qat/qat_sym_capabilities.h
index 5c6e723466..cfb176ca94 100644
--- a/drivers/crypto/qat/qat_sym_capabilities.h
+++ b/drivers/crypto/qat/qat_sym_capabilities.h
@@ -1174,7 +1174,32 @@
 				},					\
 			}, }						\
 		}, }							\
-	}
+	},								\
+	{	/* AES GMAC (AUTH) */					\
+		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,			\
+		{.sym = {						\
+			.xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,	\
+			{.auth = {					\
+				.algo = RTE_CRYPTO_AUTH_AES_GMAC,	\
+				.block_size = 16,			\
+				.key_size = {				\
+					.min = 16,			\
+					.max = 32,			\
+					.increment = 8			\
+				},					\
+				.digest_size = {			\
+					.min = 8,			\
+					.max = 16,			\
+					.increment = 4			\
+				},					\
+				.iv_size = {				\
+					.min = 0,			\
+					.max = 12,			\
+					.increment = 12			\
+				}					\
+			}, }						\
+		}, }							\
+	}								\
 
 
 
diff --git a/drivers/crypto/qat/qat_sym_session.c b/drivers/crypto/qat/qat_sym_session.c
index 221b950aeb..c04b04da00 100644
--- a/drivers/crypto/qat/qat_sym_session.c
+++ b/drivers/crypto/qat/qat_sym_session.c
@@ -709,6 +709,8 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 	struct qat_sym_dev_private *internals = dev->data->dev_private;
 	const uint8_t *key_data = auth_xform->key.data;
 	uint8_t key_length = auth_xform->key.length;
+	enum qat_device_gen qat_dev_gen =
+			internals->qat_dev->qat_dev_gen;
 
 	session->aes_cmac = 0;
 	session->auth_key_length = auth_xform->key.length;
@@ -716,6 +718,7 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 	session->auth_iv.length = auth_xform->iv.length;
 	session->auth_mode = ICP_QAT_HW_AUTH_MODE1;
 	session->is_auth = 1;
+	session->digest_length = auth_xform->digest_length;
 
 	switch (auth_xform->algo) {
 	case RTE_CRYPTO_AUTH_SHA1:
@@ -772,6 +775,10 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 			session->auth_iv.length = AES_GCM_J0_LEN;
 		else
 			session->is_iv12B = 1;
+		if (qat_dev_gen == QAT_GEN4) {
+			session->is_cnt_zero = 1;
+			session->is_ucs = 1;
+		}
 		break;
 	case RTE_CRYPTO_AUTH_SNOW3G_UIA2:
 		session->qat_hash_alg = ICP_QAT_HW_AUTH_ALGO_SNOW_3G_UIA2;
@@ -857,7 +864,6 @@ qat_sym_session_configure_auth(struct rte_cryptodev *dev,
 			return -EINVAL;
 	}
 
-	session->digest_length = auth_xform->digest_length;
 	return 0;
 }
 
@@ -1810,6 +1816,7 @@ int qat_sym_cd_auth_set(struct qat_sym_session *cdesc,
 		|| cdesc->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_AES_XCBC_MAC
 		|| cdesc->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_AES_CBC_MAC
 		|| cdesc->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_NULL
+		|| cdesc->is_cnt_zero
 			)
 		hash->auth_counter.counter = 0;
 	else {
diff --git a/drivers/crypto/qat/qat_sym_session.h b/drivers/crypto/qat/qat_sym_session.h
index 1568e09200..33b236e49b 100644
--- a/drivers/crypto/qat/qat_sym_session.h
+++ b/drivers/crypto/qat/qat_sym_session.h
@@ -103,6 +103,8 @@ struct qat_sym_session {
 	uint8_t is_iv12B;
 	uint8_t is_gmac;
 	uint8_t is_auth;
+	uint8_t is_cnt_zero;
+	/* Some generations need different setup of counter */
 	uint32_t slice_types;
 	enum qat_sym_proto_flag qat_proto_flag;
 };
-- 
2.25.1