[dpdk-dev] [PATCH v3 3/4] crypto/aesni_mb: add single operation functionality

Pablo de Lara pablo.de.lara.guarch at intel.com
Mon Dec 19 18:29:02 CET 2016


Update driver to use new AESNI Multibuffer IPSec library single
operation functionality (cipher only and authentication only).
This patch also adds tests for this new feature.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
---
 app/test/test_cryptodev.c                          | 34 ++++++++
 app/test/test_cryptodev_aes_test_vectors.h         | 36 +++++---
 app/test/test_cryptodev_hash_test_vectors.h        | 54 ++++++++----
 doc/guides/cryptodevs/aesni_mb.rst                 |  2 -
 doc/guides/rel_notes/release_17_02.rst             |  1 +
 drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c         | 95 ++++++++++++++++------
 drivers/crypto/aesni_mb/rte_aesni_mb_pmd_private.h |  9 ++
 7 files changed, 172 insertions(+), 59 deletions(-)

diff --git a/app/test/test_cryptodev.c b/app/test/test_cryptodev.c
index f1f3542..5895d99 100644
--- a/app/test/test_cryptodev.c
+++ b/app/test/test_cryptodev.c
@@ -1466,6 +1466,38 @@ test_AES_CBC_HMAC_SHA512_decrypt_perform(struct rte_cryptodev_sym_session *sess,
 }
 
 static int
+test_AES_cipheronly_mb_all(void)
+{
+	struct crypto_testsuite_params *ts_params = &testsuite_params;
+	int status;
+
+	status = test_blockcipher_all_tests(ts_params->mbuf_pool,
+		ts_params->op_mpool, ts_params->valid_devs[0],
+		RTE_CRYPTODEV_AESNI_MB_PMD,
+		BLKCIPHER_AES_CIPHERONLY_TYPE);
+
+	TEST_ASSERT_EQUAL(status, 0, "Test failed");
+
+	return TEST_SUCCESS;
+}
+
+static int
+test_authonly_mb_all(void)
+{
+	struct crypto_testsuite_params *ts_params = &testsuite_params;
+	int status;
+
+	status = test_blockcipher_all_tests(ts_params->mbuf_pool,
+		ts_params->op_mpool, ts_params->valid_devs[0],
+		RTE_CRYPTODEV_AESNI_MB_PMD,
+		BLKCIPHER_AUTHONLY_TYPE);
+
+	TEST_ASSERT_EQUAL(status, 0, "Test failed");
+
+	return TEST_SUCCESS;
+}
+
+static int
 test_AES_chain_mb_all(void)
 {
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
@@ -6559,6 +6591,8 @@ static struct unit_test_suite cryptodev_aesni_mb_testsuite  = {
 	.teardown = testsuite_teardown,
 	.unit_test_cases = {
 		TEST_CASE_ST(ut_setup, ut_teardown, test_AES_chain_mb_all),
+		TEST_CASE_ST(ut_setup, ut_teardown, test_AES_cipheronly_mb_all),
+		TEST_CASE_ST(ut_setup, ut_teardown, test_authonly_mb_all),
 
 		TEST_CASES_END() /**< NULL terminate unit test array */
 	}
diff --git a/app/test/test_cryptodev_aes_test_vectors.h b/app/test/test_cryptodev_aes_test_vectors.h
index efbe7da..898aae1 100644
--- a/app/test/test_cryptodev_aes_test_vectors.h
+++ b/app/test/test_cryptodev_aes_test_vectors.h
@@ -1025,84 +1025,96 @@ static const struct blockcipher_test_case aes_cipheronly_test_cases[] = {
 		.test_data = &aes_test_data_4,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-128-CBC Decryption",
 		.test_data = &aes_test_data_4,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-192-CBC Encryption",
 		.test_data = &aes_test_data_10,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-192-CBC Decryption",
 		.test_data = &aes_test_data_10,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-256-CBC Encryption",
 		.test_data = &aes_test_data_11,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-256-CBC Decryption",
 		.test_data = &aes_test_data_11,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-128-CTR Encryption",
 		.test_data = &aes_test_data_1,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-128-CTR Decryption",
 		.test_data = &aes_test_data_1,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-192-CTR Encryption",
 		.test_data = &aes_test_data_2,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-192-CTR Decryption",
 		.test_data = &aes_test_data_2,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-256-CTR Encryption",
 		.test_data = &aes_test_data_3,
 		.op_mask = BLOCKCIPHER_TEST_OP_ENCRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "AES-256-CTR Decryption",
 		.test_data = &aes_test_data_3,
 		.op_mask = BLOCKCIPHER_TEST_OP_DECRYPT,
 		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
-			BLOCKCIPHER_TEST_TARGET_PMD_QAT
+			BLOCKCIPHER_TEST_TARGET_PMD_QAT |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 };
 
diff --git a/app/test/test_cryptodev_hash_test_vectors.h b/app/test/test_cryptodev_hash_test_vectors.h
index 9f095cf..a8f9da0 100644
--- a/app/test/test_cryptodev_hash_test_vectors.h
+++ b/app/test/test_cryptodev_hash_test_vectors.h
@@ -97,7 +97,8 @@ hmac_md5_test_vector = {
 			0x50, 0xE8, 0xDE, 0xC5, 0xC1, 0x76, 0xAC, 0xAE,
 			0x15, 0x4A, 0xF1, 0x7F, 0x7E, 0x04, 0x42, 0x9B
 		},
-		.len = 16
+		.len = 16,
+		.truncated_len = 12
 	}
 };
 
@@ -139,7 +140,8 @@ hmac_sha1_test_vector = {
 			0x7E, 0x2E, 0x8F, 0xFC, 0x48, 0x39, 0x46, 0x17,
 			0x3F, 0x91, 0x64, 0x59
 		},
-		.len = 20
+		.len = 20,
+		.truncated_len = 12
 	}
 };
 
@@ -184,7 +186,8 @@ hmac_sha224_test_vector = {
 			0xF1, 0x8A, 0x63, 0xBB, 0x5D, 0x1D, 0xE3, 0x9F,
 			0x92, 0xF6, 0xAA, 0x19
 		},
-		.len = 28
+		.len = 28,
+		.truncated_len = 14
 	}
 };
 
@@ -229,7 +232,8 @@ hmac_sha256_test_vector = {
 			0x06, 0x4D, 0x64, 0x09, 0x0A, 0xCC, 0x02, 0x77,
 			0x71, 0x83, 0x48, 0x71, 0x07, 0x02, 0x25, 0x17
 		},
-		.len = 32
+		.len = 32,
+		.truncated_len = 16
 	}
 };
 
@@ -280,7 +284,8 @@ hmac_sha384_test_vector = {
 			0x10, 0x90, 0x0A, 0xE3, 0xF0, 0x59, 0xDD, 0xC0,
 			0x6F, 0xE6, 0x8C, 0x84, 0xD5, 0x03, 0xF8, 0x9E
 		},
-		.len = 48
+		.len = 48,
+		.truncated_len = 24
 	}
 };
 
@@ -337,7 +342,8 @@ hmac_sha512_test_vector = {
 			0x97, 0x37, 0x0F, 0xBE, 0xC2, 0x45, 0xA0, 0x87,
 			0xAF, 0x24, 0x27, 0x0C, 0x78, 0xBA, 0xBE, 0x20
 		},
-		.len = 64
+		.len = 64,
+		.truncated_len = 32
 	}
 };
 
@@ -358,13 +364,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-MD5 Digest",
 		.test_data = &hmac_md5_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-MD5 Digest Verify",
 		.test_data = &hmac_md5_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "SHA1 Digest",
@@ -382,13 +390,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-SHA1 Digest",
 		.test_data = &hmac_sha1_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-SHA1 Digest Verify",
 		.test_data = &hmac_sha1_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "SHA224 Digest",
@@ -406,13 +416,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-SHA224 Digest",
 		.test_data = &hmac_sha224_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-SHA224 Digest Verify",
 		.test_data = &hmac_sha224_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "SHA256 Digest",
@@ -430,13 +442,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-SHA256 Digest",
 		.test_data = &hmac_sha256_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-SHA256 Digest Verify",
 		.test_data = &hmac_sha256_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "SHA384 Digest",
@@ -454,13 +468,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-SHA384 Digest",
 		.test_data = &hmac_sha384_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-SHA384 Digest Verify",
 		.test_data = &hmac_sha384_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "SHA512 Digest",
@@ -478,13 +494,15 @@ static const struct blockcipher_test_case hash_test_cases[] = {
 		.test_descr = "HMAC-SHA512 Digest",
 		.test_data = &hmac_sha512_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_GEN,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 	{
 		.test_descr = "HMAC-SHA512 Digest Verify",
 		.test_data = &hmac_sha512_test_vector,
 		.op_mask = BLOCKCIPHER_TEST_OP_AUTH_VERIFY,
-		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL
+		.pmd_mask = BLOCKCIPHER_TEST_TARGET_PMD_OPENSSL |
+			BLOCKCIPHER_TEST_TARGET_PMD_MB
 	},
 };
 
diff --git a/doc/guides/cryptodevs/aesni_mb.rst b/doc/guides/cryptodevs/aesni_mb.rst
index b47cb6a..cb429d7 100644
--- a/doc/guides/cryptodevs/aesni_mb.rst
+++ b/doc/guides/cryptodevs/aesni_mb.rst
@@ -62,8 +62,6 @@ Limitations
 -----------
 
 * Chained mbufs are not supported.
-* Hash only is not supported.
-* Cipher only is not supported.
 * Only in-place is currently supported (destination address is the same as source address).
 * Only supports session-oriented API implementation (session-less APIs are not supported).
 
diff --git a/doc/guides/rel_notes/release_17_02.rst b/doc/guides/rel_notes/release_17_02.rst
index 4f666df..5aa8a94 100644
--- a/doc/guides/rel_notes/release_17_02.rst
+++ b/doc/guides/rel_notes/release_17_02.rst
@@ -49,6 +49,7 @@ New Features
 
   * The Intel(R) Multi Buffer Crypto for IPsec library used in
     AESNI MB PMD has been moved to a new repository, in github.
+  * Support for single operations (cipher only and authentication only).
 
 
 Resolved Issues
diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
index 7443b47..bafd4d7 100644
--- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
+++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
@@ -107,26 +107,27 @@ calculate_auth_precomputes(hash_one_block_t one_block_hash,
 }
 
 /** Get xform chain order */
-static int
+static enum aesni_mb_operation
 aesni_mb_get_chain_order(const struct rte_crypto_sym_xform *xform)
 {
-	/*
-	 * Multi-buffer only supports HASH_CIPHER or CIPHER_HASH chained
-	 * operations, all other options are invalid, so we must have exactly
-	 * 2 xform structs chained together
-	 */
-	if (xform->next == NULL || xform->next->next != NULL)
-		return -1;
-
-	if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
-			xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
-		return HASH_CIPHER;
+	if (xform == NULL)
+		return AESNI_MB_OP_NOT_SUPPORTED;
+
+	if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
+		if (xform->next == NULL)
+			return AESNI_MB_OP_CIPHER_ONLY;
+		if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
+			return AESNI_MB_OP_CIPHER_HASH;
+	}
 
-	if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
-				xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
-		return CIPHER_HASH;
+	if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
+		if (xform->next == NULL)
+			return AESNI_MB_OP_HASH_ONLY;
+		if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
+			return AESNI_MB_OP_HASH_CIPHER;
+	}
 
-	return -1;
+	return AESNI_MB_OP_NOT_SUPPORTED;
 }
 
 /** Set session authentication parameters */
@@ -137,11 +138,19 @@ aesni_mb_set_session_auth_parameters(const struct aesni_mb_ops *mb_ops,
 {
 	hash_one_block_t hash_oneblock_fn;
 
+	if (xform == NULL) {
+		sess->auth.algo = NULL_HASH;
+		return 0;
+	}
+
 	if (xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
 		MB_LOG_ERR("Crypto xform struct not of type auth");
 		return -1;
 	}
 
+	/* Select auth generate/verify */
+	sess->auth.operation = xform->auth.op;
+
 	/* Set Authentication Parameters */
 	if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
 		sess->auth.algo = AES_XCBC;
@@ -199,6 +208,11 @@ aesni_mb_set_session_cipher_parameters(const struct aesni_mb_ops *mb_ops,
 {
 	aes_keyexp_t aes_keyexp_fn;
 
+	if (xform == NULL) {
+		sess->cipher.mode = NULL_CIPHER;
+		return 0;
+	}
+
 	if (xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
 		MB_LOG_ERR("Crypto xform struct not of type cipher");
 		return -1;
@@ -268,16 +282,36 @@ aesni_mb_set_session_parameters(const struct aesni_mb_ops *mb_ops,
 
 	/* Select Crypto operation - hash then cipher / cipher then hash */
 	switch (aesni_mb_get_chain_order(xform)) {
-	case HASH_CIPHER:
+	case AESNI_MB_OP_HASH_CIPHER:
 		sess->chain_order = HASH_CIPHER;
 		auth_xform = xform;
 		cipher_xform = xform->next;
 		break;
-	case CIPHER_HASH:
+	case AESNI_MB_OP_CIPHER_HASH:
 		sess->chain_order = CIPHER_HASH;
 		auth_xform = xform->next;
 		cipher_xform = xform;
 		break;
+	case AESNI_MB_OP_HASH_ONLY:
+		sess->chain_order = HASH_CIPHER;
+		auth_xform = xform;
+		cipher_xform = NULL;
+		break;
+	case AESNI_MB_OP_CIPHER_ONLY:
+		/*
+		 * Multi buffer library operates only at two modes,
+		 * CIPHER_HASH and HASH_CIPHER. When doing ciphering only,
+		 * chain order depends on cipher operation: encryption is always
+		 * the first operation and decryption the last one.
+		 */
+		if (xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
+			sess->chain_order = CIPHER_HASH;
+		else
+			sess->chain_order = HASH_CIPHER;
+		auth_xform = NULL;
+		cipher_xform = xform;
+		break;
+	case AESNI_MB_OP_NOT_SUPPORTED:
 	default:
 		MB_LOG_ERR("Unsupported operation chain order parameter");
 		return -1;
@@ -397,7 +431,8 @@ process_crypto_op(struct aesni_mb_qp *qp, struct rte_crypto_op *op,
 	}
 
 	/* Set digest output location */
-	if (job->cipher_direction == DECRYPT) {
+	if (job->hash_alg != NULL_HASH &&
+			session->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
 		job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m_dst,
 				get_digest_byte_length(job->hash_alg));
 
@@ -459,6 +494,7 @@ post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 			(struct rte_crypto_op *)job->user_data;
 	struct rte_mbuf *m_dst =
 			(struct rte_mbuf *)job->user_data2;
+	struct aesni_mb_session *sess;
 
 	if (op == NULL || m_dst == NULL)
 		return NULL;
@@ -470,14 +506,19 @@ post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 	if (unlikely(job->status != STS_COMPLETED)) {
 		op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 		return op;
-	} else if (job->chain_order == HASH_CIPHER) {
-		/* Verify digest if required */
-		if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
-				job->auth_tag_output_len_in_bytes) != 0)
-			op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
-
-		/* trim area used for digest from mbuf */
-		rte_pktmbuf_trim(m_dst, get_digest_byte_length(job->hash_alg));
+	} else if (job->hash_alg != NULL_HASH) {
+		sess = (struct aesni_mb_session *)op->sym->session->_private;
+		if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
+			/* Verify digest if required */
+			if (memcmp(job->auth_tag_output,
+					op->sym->auth.digest.data,
+					job->auth_tag_output_len_in_bytes) != 0)
+				op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
+
+			/* trim area used for digest from mbuf */
+			rte_pktmbuf_trim(m_dst,
+					get_digest_byte_length(job->hash_alg));
+		}
 	}
 
 	/* Free session if a session-less crypto op */
diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_private.h b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_private.h
index 17f367f..5f125b2 100644
--- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_private.h
+++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_private.h
@@ -125,6 +125,13 @@ get_digest_byte_length(JOB_HASH_ALG algo)
 	return auth_digest_byte_lengths[algo];
 }
 
+enum aesni_mb_operation {
+	AESNI_MB_OP_HASH_CIPHER,
+	AESNI_MB_OP_CIPHER_HASH,
+	AESNI_MB_OP_HASH_ONLY,
+	AESNI_MB_OP_CIPHER_ONLY,
+	AESNI_MB_OP_NOT_SUPPORTED
+};
 
 /** private data structure for each virtual AESNI device */
 struct aesni_mb_private {
@@ -185,6 +192,8 @@ struct aesni_mb_session {
 	/** Authentication Parameters */
 	struct {
 		JOB_HASH_ALG algo; /**< Authentication Algorithm */
+		enum rte_crypto_auth_operation operation;
+		/**< auth operation generate or verify */
 		union {
 			struct {
 				uint8_t inner[128] __rte_aligned(16);
-- 
2.7.4



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