[dpdk-dev] [PATCH] examples/ipsec-secgw: add support for SHA256 HMAC

[zbigniew.bodek at caviumnetworks.com]

From: Zbigniew Bodek <zbigniew.bodek at caviumnetworks.com>

Add minor adjustments to support SHA256 HMAC:
- extend maximum key length to match SHA256 HMAC
- add SHA256 HMAC parameters and configuration string
- add SHA256 HMAC to inbound and outbound cases

Signed-off-by: Zbigniew Bodek <zbigniew.bodek at caviumnetworks.com>
---
 examples/ipsec-secgw/esp.c   | 2 ++
 examples/ipsec-secgw/ipsec.h | 2 +-
 examples/ipsec-secgw/sa.c    | 6 ++++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/ipsec-secgw/esp.c b/examples/ipsec-secgw/esp.c
index 9715ea9..e77afa0 100644
--- a/examples/ipsec-secgw/esp.c
+++ b/examples/ipsec-secgw/esp.c
@@ -122,6 +122,7 @@
 	switch (sa->auth_algo) {
 	case RTE_CRYPTO_AUTH_NULL:
 	case RTE_CRYPTO_AUTH_SHA1_HMAC:
+	case RTE_CRYPTO_AUTH_SHA256_HMAC:
 		sym_cop->auth.data.offset = ip_hdr_len;
 		sym_cop->auth.data.length = sizeof(struct esp_hdr) +
 			sa->iv_len + payload_len;
@@ -354,6 +355,7 @@
 	switch (sa->auth_algo) {
 	case RTE_CRYPTO_AUTH_NULL:
 	case RTE_CRYPTO_AUTH_SHA1_HMAC:
+	case RTE_CRYPTO_AUTH_SHA256_HMAC:
 		sym_cop->auth.data.offset = ip_hdr_len;
 		sym_cop->auth.data.length = sizeof(struct esp_hdr) +
 			sa->iv_len + pad_payload_len;
diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
index dbc8c2c..fe42661 100644
--- a/examples/ipsec-secgw/ipsec.h
+++ b/examples/ipsec-secgw/ipsec.h
@@ -90,7 +90,7 @@ struct ip_addr {
 	} ip;
 };
 
-#define MAX_KEY_SIZE		20
+#define MAX_KEY_SIZE		32
 
 struct ipsec_sa {
 	uint32_t spi;
diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index 8c4406c..39624c4 100644
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -114,6 +114,12 @@ struct supported_auth_algo {
 		.key_len = 20
 	},
 	{
+		.keyword = "sha256-hmac",
+		.algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
+		.digest_len = 12,
+		.key_len = 32
+	},
+	{
 		.keyword = "aes-128-gcm",
 		.algo = RTE_CRYPTO_AUTH_AES_GCM,
 		.digest_len = 16,
-- 
1.9.1