[dpdk-dev] [PATCH] examples/ipsec-secgw: add 3des-cbc support

[Hemant Agrawal <hemant.agrawal@nxp.com>]

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 doc/guides/sample_app_ug/ipsec_secgw.rst |  3 ++-
 examples/ipsec-secgw/esp.c               |  3 +++
 examples/ipsec-secgw/sa.c                | 11 ++++++++++-
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/doc/guides/sample_app_ug/ipsec_secgw.rst b/doc/guides/sample_app_ug/ipsec_secgw.rst
index 46696f2..4869a01 100644
--- a/doc/guides/sample_app_ug/ipsec_secgw.rst
+++ b/doc/guides/sample_app_ug/ipsec_secgw.rst
@@ -67,7 +67,7 @@ Constraints
 
 *  No IPv6 options headers.
 *  No AH mode.
-*  Supported algorithms: AES-CBC, AES-CTR, AES-GCM, HMAC-SHA1 and NULL.
+*  Supported algorithms: AES-CBC, AES-CTR, AES-GCM, 3DES-CBC, HMAC-SHA1 and NULL.
 *  Each SA must be handle by a unique lcore (*1 RX queue per port*).
 *  No chained mbufs.
 
@@ -397,6 +397,7 @@ where each options means:
    * *aes-128-cbc*: AES-CBC 128-bit algorithm
    * *aes-256-cbc*: AES-CBC 256-bit algorithm
    * *aes-128-ctr*: AES-CTR 128-bit algorithm
+   * *3des-cbc*: 3DES-CBC 192-bit algorithm
 
  * Syntax: *cipher_algo <your algorithm>*
 
diff --git a/examples/ipsec-secgw/esp.c b/examples/ipsec-secgw/esp.c
index ee9e590..e33232c 100644
--- a/examples/ipsec-secgw/esp.c
+++ b/examples/ipsec-secgw/esp.c
@@ -96,6 +96,7 @@ esp_inbound(struct rte_mbuf *m, struct ipsec_sa *sa,
 
 		switch (sa->cipher_algo) {
 		case RTE_CRYPTO_CIPHER_NULL:
+		case RTE_CRYPTO_CIPHER_3DES_CBC:
 		case RTE_CRYPTO_CIPHER_AES_CBC:
 			/* Copy IV at the end of crypto operation */
 			rte_memcpy(iv_ptr, iv, sa->iv_len);
@@ -326,6 +327,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
 	} else {
 		switch (sa->cipher_algo) {
 		case RTE_CRYPTO_CIPHER_NULL:
+		case RTE_CRYPTO_CIPHER_3DES_CBC:
 		case RTE_CRYPTO_CIPHER_AES_CBC:
 			memset(iv, 0, sa->iv_len);
 			break;
@@ -387,6 +389,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
 	} else {
 		switch (sa->cipher_algo) {
 		case RTE_CRYPTO_CIPHER_NULL:
+		case RTE_CRYPTO_CIPHER_3DES_CBC:
 		case RTE_CRYPTO_CIPHER_AES_CBC:
 			sym_cop->cipher.data.offset = ip_hdr_len +
 				sizeof(struct esp_hdr);
diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index 4ab8e09..d2d3550 100644
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -81,6 +81,13 @@ const struct supported_cipher_algo cipher_algos[] = {
 		.iv_len = 8,
 		.block_size = 16, /* XXX AESNI MB limition, should be 4 */
 		.key_len = 20
+	},
+	{
+		.keyword = "3des-cbc",
+		.algo = RTE_CRYPTO_CIPHER_3DES_CBC,
+		.iv_len = 8,
+		.block_size = 8,
+		.key_len = 24
 	}
 };
 
@@ -327,7 +334,8 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
 			if (status->status < 0)
 				return;
 
-			if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC)
+			if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC ||
+				algo->algo == RTE_CRYPTO_CIPHER_3DES_CBC)
 				rule->salt = (uint32_t)rte_rand();
 
 			if (algo->algo == RTE_CRYPTO_CIPHER_AES_CTR) {
@@ -810,6 +818,7 @@ sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 		} else {
 			switch (sa->cipher_algo) {
 			case RTE_CRYPTO_CIPHER_NULL:
+			case RTE_CRYPTO_CIPHER_3DES_CBC:
 			case RTE_CRYPTO_CIPHER_AES_CBC:
 				iv_length = sa->iv_len;
 				break;
-- 
2.7.4