test/crypto: add IV gen cases for IPsec

Added cases to verify IV generated by PMD for lookaside IPsec.

The tests compare IV generated for a batch of packets and ensures that
IV is not getting repeated in the batch.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
Acked-by: Ciara Power <ciara.power@intel.com>

app/test/test_cryptodev.c

@@ -9080,6 +9080,9 @@ test_ipsec_proto_all(const struct ipsec_test_flags *flags)
 	unsigned int i, nb_pkts = 1, pass_cnt = 0;
 	int ret;
 
+	if (flags->iv_gen)
+		nb_pkts = IPSEC_TEST_PACKETS_MAX;
+
 	for (i = 0; i < RTE_DIM(aead_list); i++) {
 		test_ipsec_td_prepare(&aead_list[i],
 				      NULL,
@@ -9129,6 +9132,18 @@ test_ipsec_proto_display_list(const void *data __rte_unused)
 	return test_ipsec_proto_all(&flags);
 }
 
+static int
+test_ipsec_proto_iv_gen(const void *data __rte_unused)
+{
+	struct ipsec_test_flags flags;
+
+	memset(&flags, 0, sizeof(flags));
+
+	flags.iv_gen = true;
+
+	return test_ipsec_proto_all(&flags);
+}
+
 static int
 test_ipsec_proto_err_icv_corrupt(const void *data __rte_unused)
 {
@@ -14053,6 +14068,10 @@ static struct unit_test_suite ipsec_proto_testsuite  = {
 			"Combined test alg list",
 			ut_setup_security, ut_teardown,
 			test_ipsec_proto_display_list),
+		TEST_CASE_NAMED_ST(
+			"IV generation",
+			ut_setup_security, ut_teardown,
+			test_ipsec_proto_iv_gen),
 		TEST_CASE_NAMED_ST(
 			"Negative test: ICV corruption",
 			ut_setup_security, ut_teardown,

app/test/test_cryptodev_security_ipsec.c

@@ -4,12 +4,15 @@
 
 #include <rte_common.h>
 #include <rte_cryptodev.h>
+#include <rte_esp.h>
 #include <rte_ip.h>
 #include <rte_security.h>
 
 #include "test.h"
 #include "test_cryptodev_security_ipsec.h"
 
+#define IV_LEN_MAX 16
+
 extern struct ipsec_test_data pkt_aes_256_gcm;
 
 int
@@ -213,6 +216,46 @@ test_ipsec_tunnel_hdr_len_get(const struct ipsec_test_data *td)
 	return len;
 }
 
+static int
+test_ipsec_iv_verify_push(struct rte_mbuf *m, const struct ipsec_test_data *td)
+{
+	static uint8_t iv_queue[IV_LEN_MAX * IPSEC_TEST_PACKETS_MAX];
+	uint8_t *iv_tmp, *output_text = rte_pktmbuf_mtod(m, uint8_t *);
+	int i, iv_pos, iv_len;
+	static int index;
+
+	if (td->aead)
+		iv_len = td->xform.aead.aead.iv.length - td->salt.len;
+	else
+		iv_len = td->xform.chain.cipher.cipher.iv.length;
+
+	iv_pos = test_ipsec_tunnel_hdr_len_get(td) + sizeof(struct rte_esp_hdr);
+	output_text += iv_pos;
+
+	TEST_ASSERT(iv_len <= IV_LEN_MAX, "IV length greater than supported");
+
+	/* Compare against previous values */
+	for (i = 0; i < index; i++) {
+		iv_tmp = &iv_queue[i * IV_LEN_MAX];
+
+		if (memcmp(output_text, iv_tmp, iv_len) == 0) {
+			printf("IV repeated");
+			return TEST_FAILED;
+		}
+	}
+
+	/* Save IV for future comparisons */
+
+	iv_tmp = &iv_queue[index * IV_LEN_MAX];
+	memcpy(iv_tmp, output_text, iv_len);
+	index++;
+
+	if (index == IPSEC_TEST_PACKETS_MAX)
+		index = 0;
+
+	return TEST_SUCCESS;
+}
+
 static int
 test_ipsec_td_verify(struct rte_mbuf *m, const struct ipsec_test_data *td,
 		     bool silent, const struct ipsec_test_flags *flags)
@@ -279,6 +322,15 @@ test_ipsec_post_process(struct rte_mbuf *m, const struct ipsec_test_data *td,
 			struct ipsec_test_data *res_d, bool silent,
 			const struct ipsec_test_flags *flags)
 {
+	int ret;
+
+	if (flags->iv_gen &&
+	    td->ipsec_xform.direction == RTE_SECURITY_IPSEC_SA_DIR_EGRESS) {
+		ret = test_ipsec_iv_verify_push(m, td);
+		if (ret != TEST_SUCCESS)
+			return ret;
+	}
+
 	/*
 	 * In case of known vector tests & all inbound tests, res_d provided
 	 * would be NULL and output data need to be validated against expected.

app/test/test_cryptodev_security_ipsec.h

@@ -50,6 +50,7 @@ struct ipsec_test_data {
 struct ipsec_test_flags {
 	bool display_alg;
 	bool icv_corrupt;
+	bool iv_gen;
 };
 
 struct crypto_param {

doc/guides/rel_notes/release_21_11.rst

@@ -100,6 +100,7 @@ New Features
 
   * Added known vector tests (AES-GCM 128, 192, 256).
   * Added tests to verify error reporting with ICV corruption.
+  * Added tests to verify IV generation.
 
 
 Removed Items