[dpdk-dev] [PATCH v2 08/27] test/crypto: move IV to crypto op private data

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

Usually, IV will change for each crypto operation.
Therefore, instead of pointing at the same location,
IV is copied after each crypto operation.

This will let the IV to be passed as an offset from
the beginning of the crypto operation, instead of
a pointer.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 test/test/test_cryptodev.c             | 386 +++++++++++++--------------------
 test/test/test_cryptodev.h             |   6 +
 test/test/test_cryptodev_blockcipher.c |  30 +--
 3 files changed, 161 insertions(+), 261 deletions(-)

diff --git a/test/test/test_cryptodev.c b/test/test/test_cryptodev.c
index cf2f90d..133c439 100644
--- a/test/test/test_cryptodev.c
+++ b/test/test/test_cryptodev.c
@@ -202,7 +202,8 @@ testsuite_setup(void)
 			RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 			NUM_MBUFS, MBUF_CACHE_SIZE,
 			DEFAULT_NUM_XFORMS *
-			sizeof(struct rte_crypto_sym_xform),
+			sizeof(struct rte_crypto_sym_xform) +
+			MAXIMUM_IV_LENGTH,
 			rte_socket_id());
 	if (ts_params->op_mpool == NULL) {
 		RTE_LOG(ERR, USER1, "Can't create CRYPTO_OP_POOL\n");
@@ -1306,19 +1307,19 @@ test_AES_CBC_HMAC_SHA1_encrypt_digest(void)
 			ut_params->ibuf, QUOTE_512_BYTES);
 	sym_op->auth.digest.length = DIGEST_BYTE_LENGTH_SHA1;
 
-	sym_op->auth.data.offset = CIPHER_IV_LENGTH_AES_CBC;
+	sym_op->auth.data.offset = 0;
 	sym_op->auth.data.length = QUOTE_512_BYTES;
 
 	/* Set crypto operation cipher parameters */
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(ut_params->ibuf,
-			CIPHER_IV_LENGTH_AES_CBC);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = CIPHER_IV_LENGTH_AES_CBC;
 
-	rte_memcpy(sym_op->cipher.iv.data, aes_cbc_iv,
-			CIPHER_IV_LENGTH_AES_CBC);
+	rte_memcpy(sym_op->cipher.iv.data, aes_cbc_iv, CIPHER_IV_LENGTH_AES_CBC);
 
-	sym_op->cipher.data.offset = CIPHER_IV_LENGTH_AES_CBC;
+	sym_op->cipher.data.offset = 0;
 	sym_op->cipher.data.length = QUOTE_512_BYTES;
 
 	/* Process crypto operation */
@@ -1329,8 +1330,8 @@ test_AES_CBC_HMAC_SHA1_encrypt_digest(void)
 			"crypto op processing failed");
 
 	/* Validate obuf */
-	uint8_t *ciphertext = rte_pktmbuf_mtod_offset(ut_params->op->sym->m_src,
-			uint8_t *, CIPHER_IV_LENGTH_AES_CBC);
+	uint8_t *ciphertext = rte_pktmbuf_mtod(ut_params->op->sym->m_src,
+			uint8_t *);
 
 	TEST_ASSERT_BUFFERS_ARE_EQUAL(ciphertext,
 			catch_22_quote_2_512_bytes_AES_CBC_ciphertext,
@@ -1460,19 +1461,18 @@ test_AES_CBC_HMAC_SHA512_decrypt_perform(struct rte_cryptodev_sym_session *sess,
 			ut_params->ibuf, QUOTE_512_BYTES);
 	sym_op->auth.digest.length = DIGEST_BYTE_LENGTH_SHA512;
 
-	sym_op->auth.data.offset = CIPHER_IV_LENGTH_AES_CBC;
+	sym_op->auth.data.offset = 0;
 	sym_op->auth.data.length = QUOTE_512_BYTES;
 
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-			ut_params->ibuf, CIPHER_IV_LENGTH_AES_CBC);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(
-			ut_params->ibuf, 0);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = CIPHER_IV_LENGTH_AES_CBC;
 
-	rte_memcpy(sym_op->cipher.iv.data, iv,
-			CIPHER_IV_LENGTH_AES_CBC);
+	rte_memcpy(sym_op->cipher.iv.data, iv, CIPHER_IV_LENGTH_AES_CBC);
 
-	sym_op->cipher.data.offset = CIPHER_IV_LENGTH_AES_CBC;
+	sym_op->cipher.data.offset = 0;
 	sym_op->cipher.data.length = QUOTE_512_BYTES;
 
 	/* Process crypto operation */
@@ -1486,8 +1486,8 @@ test_AES_CBC_HMAC_SHA512_decrypt_perform(struct rte_cryptodev_sym_session *sess,
 
 	/* Validate obuf */
 	TEST_ASSERT_BUFFERS_ARE_EQUAL(
-			rte_pktmbuf_mtod(ut_params->obuf, uint8_t *) +
-			CIPHER_IV_LENGTH_AES_CBC, catch_22_quote,
+			rte_pktmbuf_mtod(ut_params->obuf, uint8_t *),
+			catch_22_quote,
 			QUOTE_512_BYTES,
 			"Plaintext data not as expected");
 
@@ -1838,14 +1838,12 @@ create_wireless_algo_cipher_session(uint8_t dev_id,
 }
 
 static int
-create_wireless_algo_cipher_operation(const uint8_t *iv, const unsigned iv_len,
-			const unsigned cipher_len,
-			const unsigned cipher_offset,
-			enum rte_crypto_cipher_algorithm algo)
+create_wireless_algo_cipher_operation(const uint8_t *iv, uint8_t iv_len,
+			unsigned int cipher_len,
+			unsigned int cipher_offset)
 {
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
 	struct crypto_unittest_params *ut_params = &unittest_params;
-	unsigned iv_pad_len = 0;
 
 	/* Generate Crypto op data structure */
 	ut_params->op = rte_crypto_op_alloc(ts_params->op_mpool,
@@ -1862,19 +1860,11 @@ create_wireless_algo_cipher_operation(const uint8_t *iv, const unsigned iv_len,
 	sym_op->m_src = ut_params->ibuf;
 
 	/* iv */
-	if (algo == RTE_CRYPTO_CIPHER_KASUMI_F8)
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 8);
-	else
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(ut_params->ibuf
-			, iv_pad_len);
-
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
-	sym_op->cipher.iv.length = iv_pad_len;
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
+	sym_op->cipher.iv.length = iv_len;
 
 	rte_memcpy(sym_op->cipher.iv.data, iv, iv_len);
 	sym_op->cipher.data.length = cipher_len;
@@ -1883,14 +1873,12 @@ create_wireless_algo_cipher_operation(const uint8_t *iv, const unsigned iv_len,
 }
 
 static int
-create_wireless_algo_cipher_operation_oop(const uint8_t *iv, const uint8_t iv_len,
-			const unsigned cipher_len,
-			const unsigned cipher_offset,
-			enum rte_crypto_cipher_algorithm algo)
+create_wireless_algo_cipher_operation_oop(const uint8_t *iv, uint8_t iv_len,
+			unsigned int cipher_len,
+			unsigned int cipher_offset)
 {
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
 	struct crypto_unittest_params *ut_params = &unittest_params;
-	unsigned iv_pad_len = 0;
 
 	/* Generate Crypto op data structure */
 	ut_params->op = rte_crypto_op_alloc(ts_params->op_mpool,
@@ -1908,22 +1896,11 @@ create_wireless_algo_cipher_operation_oop(const uint8_t *iv, const uint8_t iv_le
 	sym_op->m_dst = ut_params->obuf;
 
 	/* iv */
-	if (algo == RTE_CRYPTO_CIPHER_KASUMI_F8)
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 8);
-	else
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(ut_params->ibuf,
-					iv_pad_len);
-
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	/* For OOP operation both buffers must have the same size */
-	if (ut_params->obuf)
-		rte_pktmbuf_prepend(ut_params->obuf, iv_pad_len);
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
-	sym_op->cipher.iv.length = iv_pad_len;
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
+	sym_op->cipher.iv.length = iv_len;
 
 	rte_memcpy(sym_op->cipher.iv.data, iv, iv_len);
 	sym_op->cipher.data.length = cipher_len;
@@ -2164,8 +2141,7 @@ create_wireless_algo_hash_operation(const uint8_t *auth_tag,
 static int
 create_wireless_cipher_hash_operation(const struct wireless_test_data *tdata,
 	enum rte_crypto_auth_operation op,
-	enum rte_crypto_auth_algorithm auth_algo,
-	enum rte_crypto_cipher_algorithm cipher_algo)
+	enum rte_crypto_auth_algorithm auth_algo)
 {
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
 	struct crypto_unittest_params *ut_params = &unittest_params;
@@ -2180,11 +2156,10 @@ create_wireless_cipher_hash_operation(const struct wireless_test_data *tdata,
 	const uint8_t *iv = tdata->iv.data;
 	const uint8_t iv_len = tdata->iv.len;
 	const unsigned int cipher_len = tdata->validCipherLenInBits.len;
-	const unsigned int cipher_offset = tdata->iv.len << 3;
+	const unsigned int cipher_offset = 0;
 	const unsigned int auth_len = tdata->validAuthLenInBits.len;
 	const unsigned int auth_offset = tdata->aad.len << 3;
 
-	unsigned int iv_pad_len = 0;
 	unsigned int aad_buffer_len;
 
 	/* Generate Crypto op data structure */
@@ -2244,17 +2219,12 @@ create_wireless_cipher_hash_operation(const struct wireless_test_data *tdata,
 	TEST_HEXDUMP(stdout, "aad:", sym_op->auth.aad.data, aad_len);
 
 	/* iv */
-	if (cipher_algo == RTE_CRYPTO_CIPHER_KASUMI_F8)
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 8);
-	else
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-		ut_params->ibuf, iv_pad_len);
-
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
-	sym_op->cipher.iv.length = iv_pad_len;
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
+	sym_op->cipher.iv.length = iv_len;
+
 	rte_memcpy(sym_op->cipher.iv.data, iv, iv_len);
 	sym_op->cipher.data.length = cipher_len;
 	sym_op->cipher.data.offset = cipher_offset + auth_offset;
@@ -2270,8 +2240,7 @@ create_zuc_cipher_hash_generate_operation(
 {
 	return create_wireless_cipher_hash_operation(tdata,
 		RTE_CRYPTO_AUTH_OP_GENERATE,
-		RTE_CRYPTO_AUTH_ZUC_EIA3,
-		RTE_CRYPTO_CIPHER_ZUC_EEA3);
+		RTE_CRYPTO_AUTH_ZUC_EIA3);
 }
 
 static int
@@ -2281,7 +2250,6 @@ create_wireless_algo_cipher_hash_operation(const uint8_t *auth_tag,
 		unsigned data_pad_len,
 		enum rte_crypto_auth_operation op,
 		enum rte_crypto_auth_algorithm auth_algo,
-		enum rte_crypto_cipher_algorithm cipher_algo,
 		const uint8_t *iv, const uint8_t iv_len,
 		const unsigned cipher_len, const unsigned cipher_offset,
 		const unsigned auth_len, const unsigned auth_offset)
@@ -2289,7 +2257,6 @@ create_wireless_algo_cipher_hash_operation(const uint8_t *auth_tag,
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
 	struct crypto_unittest_params *ut_params = &unittest_params;
 
-	unsigned iv_pad_len = 0;
 	unsigned aad_buffer_len;
 
 	/* Generate Crypto op data structure */
@@ -2349,17 +2316,12 @@ create_wireless_algo_cipher_hash_operation(const uint8_t *auth_tag,
 	TEST_HEXDUMP(stdout, "aad:", sym_op->auth.aad.data, aad_len);
 
 	/* iv */
-	if (cipher_algo == RTE_CRYPTO_CIPHER_KASUMI_F8)
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 8);
-	else
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-		ut_params->ibuf, iv_pad_len);
-
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
-	sym_op->cipher.iv.length = iv_pad_len;
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
+	sym_op->cipher.iv.length = iv_len;
+
 	rte_memcpy(sym_op->cipher.iv.data, iv, iv_len);
 	sym_op->cipher.data.length = cipher_len;
 	sym_op->cipher.data.offset = cipher_offset + auth_offset;
@@ -2376,13 +2338,11 @@ create_wireless_algo_auth_cipher_operation(const unsigned auth_tag_len,
 		unsigned data_pad_len,
 		const unsigned cipher_len, const unsigned cipher_offset,
 		const unsigned auth_len, const unsigned auth_offset,
-		enum rte_crypto_auth_algorithm auth_algo,
-		enum rte_crypto_cipher_algorithm cipher_algo)
+		enum rte_crypto_auth_algorithm auth_algo)
 {
 	struct crypto_testsuite_params *ts_params = &testsuite_params;
 	struct crypto_unittest_params *ut_params = &unittest_params;
 
-	unsigned iv_pad_len = 0;
 	unsigned aad_buffer_len = 0;
 
 	/* Generate Crypto op data structure */
@@ -2441,18 +2401,11 @@ create_wireless_algo_auth_cipher_operation(const unsigned auth_tag_len,
 			sym_op->auth.aad.data, aad_len);
 
 	/* iv */
-	if (cipher_algo == RTE_CRYPTO_CIPHER_KASUMI_F8)
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 8);
-	else
-		iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-		ut_params->ibuf, iv_pad_len);
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
-	sym_op->cipher.iv.length = iv_pad_len;
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
+	sym_op->cipher.iv.length = iv_len;
 
 	rte_memcpy(sym_op->cipher.iv.data, iv, iv_len);
 
@@ -2886,8 +2839,7 @@ test_kasumi_encryption(const struct kasumi_test_data *tdata)
 	/* Create KASUMI operation */
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data, tdata->iv.len,
 					tdata->plaintext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -2897,8 +2849,7 @@ test_kasumi_encryption(const struct kasumi_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -2960,8 +2911,7 @@ test_kasumi_encryption_sgl(const struct kasumi_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data,
 					tdata->iv.len,
 					tdata->plaintext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -2972,10 +2922,10 @@ test_kasumi_encryption_sgl(const struct kasumi_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_dst;
 
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_read(ut_params->obuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->obuf, 0,
 				plaintext_len, buffer);
 	else
-		ciphertext = rte_pktmbuf_read(ut_params->ibuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->ibuf, 0,
 				plaintext_len, buffer);
 
 	/* Validate obuf */
@@ -3031,8 +2981,7 @@ test_kasumi_encryption_oop(const struct kasumi_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->plaintext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3042,8 +2991,7 @@ test_kasumi_encryption_oop(const struct kasumi_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -3106,8 +3054,7 @@ test_kasumi_encryption_oop_sgl(const struct kasumi_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->plaintext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3117,10 +3064,10 @@ test_kasumi_encryption_oop_sgl(const struct kasumi_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_read(ut_params->obuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->obuf, 0,
 				plaintext_pad_len, buffer);
 	else
-		ciphertext = rte_pktmbuf_read(ut_params->ibuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->ibuf, 0,
 				plaintext_pad_len, buffer);
 
 	/* Validate obuf */
@@ -3174,8 +3121,7 @@ test_kasumi_decryption_oop(const struct kasumi_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->ciphertext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3185,8 +3131,7 @@ test_kasumi_decryption_oop(const struct kasumi_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		plaintext = ciphertext;
 
@@ -3240,8 +3185,7 @@ test_kasumi_decryption(const struct kasumi_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data,
 					tdata->iv.len,
 					tdata->ciphertext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_KASUMI_F8);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3251,8 +3195,7 @@ test_kasumi_decryption(const struct kasumi_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		plaintext = ciphertext;
 
@@ -3305,8 +3248,7 @@ test_snow3g_encryption(const struct snow3g_test_data *tdata)
 	/* Create SNOW 3G operation */
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data, tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3316,8 +3258,7 @@ test_snow3g_encryption(const struct snow3g_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -3379,8 +3320,7 @@ test_snow3g_encryption_oop(const struct snow3g_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3390,8 +3330,7 @@ test_snow3g_encryption_oop(const struct snow3g_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -3456,8 +3395,7 @@ test_snow3g_encryption_oop_sgl(const struct snow3g_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3467,10 +3405,10 @@ test_snow3g_encryption_oop_sgl(const struct snow3g_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_read(ut_params->obuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->obuf, 0,
 				plaintext_len, buffer);
 	else
-		ciphertext = rte_pktmbuf_read(ut_params->ibuf, tdata->iv.len,
+		ciphertext = rte_pktmbuf_read(ut_params->ibuf, 0,
 				plaintext_len, buffer);
 
 	TEST_HEXDUMP(stdout, "ciphertext:", ciphertext, plaintext_len);
@@ -3559,9 +3497,7 @@ test_snow3g_encryption_offset_oop(const struct snow3g_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3) +
-					extra_offset,
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					extra_offset);
 	if (retval < 0)
 		return retval;
 
@@ -3571,8 +3507,7 @@ test_snow3g_encryption_offset_oop(const struct snow3g_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -3638,8 +3573,7 @@ static int test_snow3g_decryption(const struct snow3g_test_data *tdata)
 	/* Create SNOW 3G operation */
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data, tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3648,8 +3582,7 @@ static int test_snow3g_decryption(const struct snow3g_test_data *tdata)
 	TEST_ASSERT_NOT_NULL(ut_params->op, "failed to retrieve obuf");
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		plaintext = ciphertext;
 
@@ -3712,8 +3645,7 @@ static int test_snow3g_decryption_oop(const struct snow3g_test_data *tdata)
 	retval = create_wireless_algo_cipher_operation_oop(tdata->iv.data,
 					tdata->iv.len,
 					tdata->validCipherLenInBits.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_SNOW3G_UEA2);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -3722,8 +3654,7 @@ static int test_snow3g_decryption_oop(const struct snow3g_test_data *tdata)
 	TEST_ASSERT_NOT_NULL(ut_params->op, "failed to retrieve obuf");
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		plaintext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		plaintext = ciphertext;
 
@@ -3800,7 +3731,7 @@ test_zuc_cipher_auth(const struct wireless_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_src;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len + tdata->aad.len;
+				+ tdata->aad.len;
 	else
 		ciphertext = plaintext;
 
@@ -3813,7 +3744,7 @@ test_zuc_cipher_auth(const struct wireless_test_data *tdata)
 			"ZUC Ciphertext data not as expected");
 
 	ut_params->digest = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-	    + plaintext_pad_len + tdata->aad.len + tdata->iv.len;
+	    + plaintext_pad_len + tdata->aad.len;
 
 	/* Validate obuf */
 	TEST_ASSERT_BUFFERS_ARE_EQUAL(
@@ -3868,10 +3799,9 @@ test_snow3g_cipher_auth(const struct snow3g_test_data *tdata)
 			tdata->aad.len, /*tdata->plaintext.len,*/
 			plaintext_pad_len, RTE_CRYPTO_AUTH_OP_GENERATE,
 			RTE_CRYPTO_AUTH_SNOW3G_UIA2,
-			RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
 			tdata->iv.data, tdata->iv.len,
 			tdata->validCipherLenInBits.len,
-			(tdata->iv.len << 3),
+			0,
 			tdata->validAuthLenInBits.len,
 			(tdata->aad.len << 3)
 			);
@@ -3884,7 +3814,7 @@ test_snow3g_cipher_auth(const struct snow3g_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_src;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len + tdata->aad.len;
+					+ tdata->aad.len;
 	else
 		ciphertext = plaintext;
 
@@ -3897,7 +3827,7 @@ test_snow3g_cipher_auth(const struct snow3g_test_data *tdata)
 			"SNOW 3G Ciphertext data not as expected");
 
 	ut_params->digest = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-	    + plaintext_pad_len + tdata->aad.len + tdata->iv.len;
+	    + plaintext_pad_len + tdata->aad.len;
 
 	/* Validate obuf */
 	TEST_ASSERT_BUFFERS_ARE_EQUAL(
@@ -3953,11 +3883,10 @@ test_snow3g_auth_cipher(const struct snow3g_test_data *tdata)
 		tdata->aad.data, tdata->aad.len,
 		plaintext_pad_len,
 		tdata->validCipherLenInBits.len,
-		(tdata->iv.len << 3),
+		0,
 		tdata->validAuthLenInBits.len,
 		(tdata->aad.len << 3),
-		RTE_CRYPTO_AUTH_SNOW3G_UIA2,
-		RTE_CRYPTO_CIPHER_SNOW3G_UEA2
+		RTE_CRYPTO_AUTH_SNOW3G_UIA2
 	);
 
 	if (retval < 0)
@@ -3969,12 +3898,12 @@ test_snow3g_auth_cipher(const struct snow3g_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_src;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->aad.len + tdata->iv.len;
+				+ tdata->aad.len;
 	else
 		ciphertext = plaintext;
 
 	ut_params->digest = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-			+ plaintext_pad_len + tdata->aad.len + tdata->iv.len;
+			+ plaintext_pad_len + tdata->aad.len;
 	TEST_HEXDUMP(stdout, "ciphertext:", ciphertext, plaintext_len);
 
 	/* Validate obuf */
@@ -4038,11 +3967,10 @@ test_kasumi_auth_cipher(const struct kasumi_test_data *tdata)
 				tdata->aad.data, tdata->aad.len,
 				plaintext_pad_len,
 				tdata->validCipherLenInBits.len,
-				(tdata->iv.len << 3),
+				0,
 				tdata->validAuthLenInBits.len,
 				(tdata->aad.len << 3),
-				RTE_CRYPTO_AUTH_KASUMI_F9,
-				RTE_CRYPTO_CIPHER_KASUMI_F8
+				RTE_CRYPTO_AUTH_KASUMI_F9
 				);
 
 	if (retval < 0)
@@ -4054,7 +3982,7 @@ test_kasumi_auth_cipher(const struct kasumi_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_src;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len + tdata->aad.len;
+				+ tdata->aad.len;
 	else
 		ciphertext = plaintext;
 
@@ -4065,7 +3993,7 @@ test_kasumi_auth_cipher(const struct kasumi_test_data *tdata)
 			tdata->validCipherLenInBits.len,
 			"KASUMI Ciphertext data not as expected");
 	ut_params->digest = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-	    + plaintext_pad_len + tdata->aad.len + tdata->iv.len;
+	    + plaintext_pad_len + tdata->aad.len;
 
 	/* Validate obuf */
 	TEST_ASSERT_BUFFERS_ARE_EQUAL(
@@ -4122,10 +4050,9 @@ test_kasumi_cipher_auth(const struct kasumi_test_data *tdata)
 				tdata->aad.len,
 				plaintext_pad_len, RTE_CRYPTO_AUTH_OP_GENERATE,
 				RTE_CRYPTO_AUTH_KASUMI_F9,
-				RTE_CRYPTO_CIPHER_KASUMI_F8,
 				tdata->iv.data, tdata->iv.len,
 				tdata->validCipherLenInBits.len,
-				(tdata->iv.len << 3),
+				0,
 				tdata->validAuthLenInBits.len,
 				(tdata->aad.len << 3)
 				);
@@ -4138,12 +4065,12 @@ test_kasumi_cipher_auth(const struct kasumi_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_src;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->aad.len + tdata->iv.len;
+				+ tdata->aad.len;
 	else
 		ciphertext = plaintext;
 
 	ut_params->digest = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-			+ plaintext_pad_len + tdata->aad.len + tdata->iv.len;
+			+ plaintext_pad_len + tdata->aad.len;
 
 	/* Validate obuf */
 	TEST_ASSERT_BUFFERS_ARE_EQUAL_BIT(
@@ -4209,8 +4136,7 @@ test_zuc_encryption(const struct wireless_test_data *tdata)
 	/* Create ZUC operation */
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data, tdata->iv.len,
 					tdata->plaintext.len,
-					(tdata->iv.len << 3),
-					RTE_CRYPTO_CIPHER_ZUC_EEA3);
+					0);
 	if (retval < 0)
 		return retval;
 
@@ -4220,8 +4146,7 @@ test_zuc_encryption(const struct wireless_test_data *tdata)
 
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
-		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *)
-				+ tdata->iv.len;
+		ciphertext = rte_pktmbuf_mtod(ut_params->obuf, uint8_t *);
 	else
 		ciphertext = plaintext;
 
@@ -4294,8 +4219,7 @@ test_zuc_encryption_sgl(const struct wireless_test_data *tdata)
 	/* Create ZUC operation */
 	retval = create_wireless_algo_cipher_operation(tdata->iv.data,
 			tdata->iv.len, tdata->plaintext.len,
-			(tdata->iv.len << 3),
-			RTE_CRYPTO_CIPHER_ZUC_EEA3);
+			0);
 	if (retval < 0)
 		return retval;
 
@@ -4306,10 +4230,10 @@ test_zuc_encryption_sgl(const struct wireless_test_data *tdata)
 	ut_params->obuf = ut_params->op->sym->m_dst;
 	if (ut_params->obuf)
 		ciphertext = rte_pktmbuf_read(ut_params->obuf,
-			tdata->iv.len, plaintext_len, ciphertext_buffer);
+			0, plaintext_len, ciphertext_buffer);
 	else
 		ciphertext = rte_pktmbuf_read(ut_params->ibuf,
-			tdata->iv.len, plaintext_len, ciphertext_buffer);
+			0, plaintext_len, ciphertext_buffer);
 
 	/* Validate obuf */
 	TEST_HEXDUMP(stdout, "ciphertext:", ciphertext, plaintext_len);
@@ -4906,7 +4830,7 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 	struct crypto_unittest_params *ut_params = &unittest_params;
 
 	uint8_t *plaintext, *ciphertext;
-	unsigned int iv_pad_len, aad_pad_len, plaintext_pad_len;
+	unsigned int aad_pad_len, plaintext_pad_len;
 
 	/* Generate Crypto op data structure */
 	ut_params->op = rte_crypto_op_alloc(ts_params->op_mpool,
@@ -4930,14 +4854,11 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 	TEST_HEXDUMP(stdout, "aad:", sym_op->auth.aad.data,
 		sym_op->auth.aad.length);
 
-	/* Prepend iv */
-	iv_pad_len = RTE_ALIGN_CEIL(tdata->iv.len, 16);
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-			ut_params->ibuf, iv_pad_len);
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	/* Append IV at the end of the crypto operation*/
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = tdata->iv.len;
 
 	rte_memcpy(sym_op->cipher.iv.data, tdata->iv.data, tdata->iv.len);
@@ -4958,12 +4879,11 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 		if (ut_params->obuf) {
 			ciphertext = (uint8_t *)rte_pktmbuf_append(
 					ut_params->obuf,
-					plaintext_pad_len + aad_pad_len +
-					iv_pad_len);
+					plaintext_pad_len + aad_pad_len);
 			TEST_ASSERT_NOT_NULL(ciphertext,
 					"no room to append ciphertext");
 
-			memset(ciphertext + aad_pad_len + iv_pad_len, 0,
+			memset(ciphertext + aad_pad_len, 0,
 					tdata->ciphertext.len);
 		}
 	} else {
@@ -4981,12 +4901,11 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 		if (ut_params->obuf) {
 			plaintext = (uint8_t *)rte_pktmbuf_append(
 					ut_params->obuf,
-					plaintext_pad_len + aad_pad_len +
-					iv_pad_len);
+					plaintext_pad_len + aad_pad_len);
 			TEST_ASSERT_NOT_NULL(plaintext,
 					"no room to append plaintext");
 
-			memset(plaintext + aad_pad_len + iv_pad_len, 0,
+			memset(plaintext + aad_pad_len, 0,
 					tdata->plaintext.len);
 		}
 	}
@@ -5004,7 +4923,7 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 				ut_params->obuf ? ut_params->obuf :
 						ut_params->ibuf,
 						plaintext_pad_len +
-						aad_pad_len + iv_pad_len);
+						aad_pad_len);
 		sym_op->auth.digest.length = tdata->auth_tag.len;
 	} else {
 		sym_op->auth.digest.data = (uint8_t *)rte_pktmbuf_append(
@@ -5013,7 +4932,7 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 				"no room to append digest");
 		sym_op->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(
 				ut_params->ibuf,
-				plaintext_pad_len + aad_pad_len + iv_pad_len);
+				plaintext_pad_len + aad_pad_len);
 		sym_op->auth.digest.length = tdata->auth_tag.len;
 
 		rte_memcpy(sym_op->auth.digest.data, tdata->auth_tag.data,
@@ -5024,10 +4943,10 @@ create_gcm_operation(enum rte_crypto_cipher_operation op,
 	}
 
 	sym_op->cipher.data.length = tdata->plaintext.len;
-	sym_op->cipher.data.offset = aad_pad_len + iv_pad_len;
+	sym_op->cipher.data.offset = aad_pad_len;
 
 	sym_op->auth.data.length = tdata->plaintext.len;
-	sym_op->auth.data.offset = aad_pad_len + iv_pad_len;
+	sym_op->auth.data.offset = aad_pad_len;
 
 	return 0;
 }
@@ -6465,10 +6384,8 @@ create_gmac_operation(enum rte_crypto_auth_operation op,
 	struct crypto_unittest_params *ut_params = &unittest_params;
 	struct rte_crypto_sym_op *sym_op;
 
-	unsigned iv_pad_len;
 	unsigned aad_pad_len;
 
-	iv_pad_len = RTE_ALIGN_CEIL(tdata->iv.len, 16);
 	aad_pad_len = RTE_ALIGN_CEIL(tdata->aad.len, 16);
 
 	/*
@@ -6513,17 +6430,15 @@ create_gmac_operation(enum rte_crypto_auth_operation op,
 				sym_op->auth.digest.length);
 	}
 
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-			ut_params->ibuf, iv_pad_len);
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = tdata->iv.len;
 
 	rte_memcpy(sym_op->cipher.iv.data, tdata->iv.data, tdata->iv.len);
 
-	TEST_HEXDUMP(stdout, "iv:", sym_op->cipher.iv.data, iv_pad_len);
+	TEST_HEXDUMP(stdout, "iv:", sym_op->cipher.iv.data, tdata->iv.len);
 
 	sym_op->cipher.data.length = 0;
 	sym_op->cipher.data.offset = 0;
@@ -7061,14 +6976,13 @@ create_auth_GMAC_operation(struct crypto_testsuite_params *ts_params,
 			sym_op->auth.digest.data,
 			sym_op->auth.digest.length);
 
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-		ut_params->ibuf, reference->iv.len);
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = reference->iv.len;
 
-	memcpy(sym_op->cipher.iv.data, reference->iv.data, reference->iv.len);
+	rte_memcpy(sym_op->cipher.iv.data, reference->iv.data, reference->iv.len);
 
 	sym_op->cipher.data.length = 0;
 	sym_op->cipher.data.offset = 0;
@@ -7121,20 +7035,19 @@ create_cipher_auth_operation(struct crypto_testsuite_params *ts_params,
 			sym_op->auth.digest.data,
 			sym_op->auth.digest.length);
 
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-		ut_params->ibuf, reference->iv.len);
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data, "no room to prepend iv");
-
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = reference->iv.len;
 
-	memcpy(sym_op->cipher.iv.data, reference->iv.data, reference->iv.len);
+	rte_memcpy(sym_op->cipher.iv.data, reference->iv.data, reference->iv.len);
 
 	sym_op->cipher.data.length = reference->ciphertext.len;
-	sym_op->cipher.data.offset = reference->iv.len;
+	sym_op->cipher.data.offset = 0;
 
 	sym_op->auth.data.length = reference->ciphertext.len;
-	sym_op->auth.data.offset = reference->iv.len;
+	sym_op->auth.data.offset = 0;
 
 	return 0;
 }
@@ -7348,8 +7261,6 @@ create_gcm_operation_SGL(enum rte_crypto_cipher_operation op,
 	const unsigned int iv_len = tdata->iv.len;
 	const unsigned int aad_len = tdata->aad.len;
 
-	unsigned int iv_pad_len = 0;
-
 	/* Generate Crypto op data structure */
 	ut_params->op = rte_crypto_op_alloc(ts_params->op_mpool,
 			RTE_CRYPTO_OP_TYPE_SYMMETRIC);
@@ -7374,19 +7285,13 @@ create_gcm_operation_SGL(enum rte_crypto_cipher_operation op,
 				sym_op->auth.digest.length);
 	}
 
-	iv_pad_len = RTE_ALIGN_CEIL(iv_len, 16);
-
-	sym_op->cipher.iv.data = (uint8_t *)rte_pktmbuf_prepend(
-			ut_params->ibuf, iv_pad_len);
-
-	TEST_ASSERT_NOT_NULL(sym_op->cipher.iv.data,
-			"no room to prepend iv");
-
-	memset(sym_op->cipher.iv.data, 0, iv_pad_len);
-	sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(ut_params->ibuf);
+	sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(ut_params->op,
+						uint8_t *, IV_OFFSET);
+	sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(ut_params->op,
+						IV_OFFSET);
 	sym_op->cipher.iv.length = iv_len;
 
-	rte_memcpy(sym_op->cipher.iv.data, tdata->iv.data, iv_pad_len);
+	rte_memcpy(sym_op->cipher.iv.data, tdata->iv.data, iv_len);
 
 	sym_op->auth.aad.data = (uint8_t *)rte_pktmbuf_prepend(
 			ut_params->ibuf, aad_len);
@@ -7399,14 +7304,14 @@ create_gcm_operation_SGL(enum rte_crypto_cipher_operation op,
 	memset(sym_op->auth.aad.data, 0, aad_len);
 	rte_memcpy(sym_op->auth.aad.data, tdata->aad.data, aad_len);
 
-	TEST_HEXDUMP(stdout, "iv:", sym_op->cipher.iv.data, iv_pad_len);
+	TEST_HEXDUMP(stdout, "iv:", sym_op->cipher.iv.data, iv_len);
 	TEST_HEXDUMP(stdout, "aad:",
 			sym_op->auth.aad.data, aad_len);
 
 	sym_op->cipher.data.length = tdata->plaintext.len;
-	sym_op->cipher.data.offset = aad_len + iv_pad_len;
+	sym_op->cipher.data.offset = aad_len;
 
-	sym_op->auth.data.offset = aad_len + iv_pad_len;
+	sym_op->auth.data.offset = aad_len;
 	sym_op->auth.data.length = tdata->plaintext.len;
 
 	return 0;
@@ -7440,8 +7345,7 @@ test_AES_GCM_authenticated_encryption_SGL(const struct gcm_test_data *tdata,
 	int ecx = 0;
 	void *digest_mem = NULL;
 
-	uint32_t prepend_len = ALIGN_POW2_ROUNDUP(tdata->iv.len, 16)
-			+ tdata->aad.len;
+	uint32_t prepend_len = tdata->aad.len;
 
 	if (tdata->plaintext.len % fragsz != 0) {
 		if (tdata->plaintext.len / fragsz + 1 > SGL_MAX_NO)
diff --git a/test/test/test_cryptodev.h b/test/test/test_cryptodev.h
index 67354a9..d60fa35 100644
--- a/test/test/test_cryptodev.h
+++ b/test/test/test_cryptodev.h
@@ -71,6 +71,12 @@
 #define TRUNCATED_DIGEST_BYTE_LENGTH_SHA384		(24)
 #define TRUNCATED_DIGEST_BYTE_LENGTH_SHA512		(32)
 
+#define MAXIMUM_IV_LENGTH				(16)
+
+#define IV_OFFSET			(sizeof(struct rte_crypto_op) + \
+		sizeof(struct rte_crypto_sym_op) + DEFAULT_NUM_XFORMS * \
+		sizeof(struct rte_crypto_sym_xform))
+
 /**
  * Write (spread) data from buffer to mbuf data
  *
diff --git a/test/test/test_cryptodev_blockcipher.c b/test/test/test_cryptodev_blockcipher.c
index 603c776..186e169 100644
--- a/test/test/test_cryptodev_blockcipher.c
+++ b/test/test/test_cryptodev_blockcipher.c
@@ -118,8 +118,6 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 	}
 
 	/* preparing data */
-	if (t->op_mask & BLOCKCIPHER_TEST_OP_CIPHER)
-		buf_len += tdata->iv.len;
 	if (t->op_mask & BLOCKCIPHER_TEST_OP_AUTH)
 		buf_len += digest_len;
 
@@ -145,10 +143,6 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 		pktmbuf_write(ibuf, 0, tdata->ciphertext.len,
 				tdata->ciphertext.data);
 
-	if (t->op_mask & BLOCKCIPHER_TEST_OP_CIPHER) {
-		rte_memcpy(rte_pktmbuf_prepend(ibuf, tdata->iv.len),
-				tdata->iv.data, tdata->iv.len);
-	}
 	buf_p = rte_pktmbuf_append(ibuf, digest_len);
 	if (t->op_mask & BLOCKCIPHER_TEST_OP_AUTH_VERIFY)
 		rte_memcpy(buf_p, tdata->digest.data, digest_len);
@@ -294,24 +288,20 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 		cipher_xform->cipher.key.data = cipher_key;
 		cipher_xform->cipher.key.length = tdata->cipher_key.len;
 
-		sym_op->cipher.data.offset = tdata->iv.len;
+		sym_op->cipher.data.offset = 0;
 		sym_op->cipher.data.length = tdata->ciphertext.len;
-		sym_op->cipher.iv.data = rte_pktmbuf_mtod(sym_op->m_src,
-			uint8_t *);
+		sym_op->cipher.iv.data = rte_crypto_op_ctod_offset(op,
+						uint8_t *, IV_OFFSET);
+		sym_op->cipher.iv.phys_addr = rte_crypto_op_ctophys_offset(op,
+						IV_OFFSET);
 		sym_op->cipher.iv.length = tdata->iv.len;
-		sym_op->cipher.iv.phys_addr = rte_pktmbuf_mtophys(
-			sym_op->m_src);
+		rte_memcpy(sym_op->cipher.iv.data, tdata->iv.data,
+				tdata->iv.len);
 	}
 
 	if (t->op_mask & BLOCKCIPHER_TEST_OP_AUTH) {
-		uint32_t auth_data_offset = 0;
 		uint32_t digest_offset = tdata->ciphertext.len;
 
-		if (t->op_mask & BLOCKCIPHER_TEST_OP_CIPHER) {
-			digest_offset += tdata->iv.len;
-			auth_data_offset += tdata->iv.len;
-		}
-
 		auth_xform->type = RTE_CRYPTO_SYM_XFORM_AUTH;
 		auth_xform->auth.algo = tdata->auth_algo;
 		auth_xform->auth.key.length = tdata->auth_key.len;
@@ -334,7 +324,7 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 					digest_offset);
 		}
 
-		sym_op->auth.data.offset = auth_data_offset;
+		sym_op->auth.data.offset = 0;
 		sym_op->auth.data.length = tdata->ciphertext.len;
 		sym_op->auth.digest.length = digest_len;
 	}
@@ -421,7 +411,7 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 			compare_len = tdata->plaintext.len;
 		}
 
-		if (memcmp(rte_pktmbuf_read(iobuf, tdata->iv.len, compare_len,
+		if (memcmp(rte_pktmbuf_read(iobuf, 0, compare_len,
 				buffer), compare_ref, compare_len)) {
 			snprintf(test_msg, BLOCKCIPHER_TEST_MSG_LEN, "line %u "
 				"FAILED: %s", __LINE__,
@@ -436,7 +426,7 @@ test_blockcipher_one_case(const struct blockcipher_test_case *t,
 
 		if (t->op_mask & BLOCKCIPHER_TEST_OP_CIPHER)
 			auth_res = pktmbuf_mtod_offset(iobuf,
-					tdata->iv.len + tdata->ciphertext.len);
+					tdata->ciphertext.len);
 		else
 			auth_res = pktmbuf_mtod_offset(iobuf,
 					tdata->ciphertext.len);
-- 
2.9.4