- u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
- clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
- integ_total_len += sizeof (seq_hi);
+ integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
+ integ_total_len += iv_sz + sizeof (esp_header_t);
+
+ if (b != lb)
+ {
+ integ_total_len = esp_encrypt_chain_integ (
+ vm, ptd, sa, b, lb, icv_sz,
+ payload - iv_sz - sizeof (esp_header_t),
+ payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
+ }
+ else if (ipsec_sa_is_set_USE_ESN (sa))
+ {
+ u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
+ clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
+ integ_total_len += sizeof (seq_hi);
+ }