examples/ipsec-secgw: convert IV to big endian

According to rfc4106 the IV should be unique and can be implemented
as counter.
The changed was created because putting an analyzer on wire and
comparing packets generated by this application and Linux kernel.
Linux kernel sets IV as BE, so it is worth to do the same for
future debug / comparison.

Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Acked-by: Radu Nicolau <radu.nicolau@intel.com>

diff --git a/examples/ipsec-secgw/esp.c b/examples/ipsec-secgw/esp.c
index 063e63f..a63fb95 100644 (file)
--- a/examples/ipsec-secgw/esp.c
+++ b/examples/ipsec-secgw/esp.c
@@ -331,7 +331,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
        if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) {
                uint8_t *aad;
 
-               *iv = sa->seq;
+               *iv = rte_cpu_to_be_64(sa->seq);
                sym_cop->aead.data.offset = ip_hdr_len +
                        sizeof(struct esp_hdr) + sa->iv_len;
                sym_cop->aead.data.length = pad_payload_len;
@@ -344,7 +344,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
 
                struct cnt_blk *icb = get_cnt_blk(m);
                icb->salt = sa->salt;
-               icb->iv = sa->seq;
+               icb->iv = rte_cpu_to_be_64(sa->seq);
                icb->cnt = rte_cpu_to_be_32(1);
 
                aad = get_aad(m);
@@ -367,7 +367,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
                        sym_cop->cipher.data.length = pad_payload_len + sa->iv_len;
                        break;
                case RTE_CRYPTO_CIPHER_AES_CTR:
-                       *iv = sa->seq;
+                       *iv = rte_cpu_to_be_64(sa->seq);
                        sym_cop->cipher.data.offset = ip_hdr_len +
                                sizeof(struct esp_hdr) + sa->iv_len;
                        sym_cop->cipher.data.length = pad_payload_len;
@@ -386,7 +386,7 @@ esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
 
                struct cnt_blk *icb = get_cnt_blk(m);
                icb->salt = sa->salt;
-               icb->iv = sa->seq;
+               icb->iv = rte_cpu_to_be_64(sa->seq);
                icb->cnt = rte_cpu_to_be_32(1);
 
                switch (sa->auth_algo) {