IPSEC: support GCM in ESP

[vpp.git] / src / vnet / ipsec / ah_decrypt.c

diff --git a/src/vnet/ipsec/ah_decrypt.c b/src/vnet/ipsec/ah_decrypt.c
index 0fc4f48..0cced35 100644 (file)
--- a/src/vnet/ipsec/ah_decrypt.c
+++ b/src/vnet/ipsec/ah_decrypt.c
@@ -84,7 +84,6 @@ ah_decrypt_inline (vlib_main_t * vm,
 {
   u32 n_left_from, *from, next_index, *to_next, thread_index;
   ipsec_main_t *im = &ipsec_main;
-  ipsec_proto_main_t *em = &ipsec_proto_main;
   from = vlib_frame_vector_args (from_frame);
   n_left_from = from_frame->n_vectors;
   int icv_size;
@@ -152,29 +151,17 @@ ah_decrypt_inline (vlib_main_t * vm,
          seq = clib_host_to_net_u32 (ah0->seq_no);
 
          /* anti-replay check */
-         if (sa0->use_anti_replay)
+         if (ipsec_sa_anti_replay_check (sa0, &ah0->seq_no))
            {
-             int rv = 0;
-
-             if (PREDICT_TRUE (sa0->use_esn))
-               rv = esp_replay_check_esn (sa0, seq);
-             else
-               rv = esp_replay_check (sa0, seq);
-
-             if (PREDICT_FALSE (rv))
-               {
-                 vlib_node_increment_counter (vm, node->node_index,
-                                              AH_DECRYPT_ERROR_REPLAY, 1);
-                 goto trace;
-               }
+             i_b0->error = node->errors[AH_DECRYPT_ERROR_REPLAY];
+             goto trace;
            }
 
          vlib_increment_combined_counter
            (&ipsec_sa_counters, thread_index, sa_index0,
             1, i_b0->current_length);
 
-         icv_size =
-           em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
+         icv_size = sa0->integ_icv_size;
          if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE))
            {
              u8 sig[64];
@@ -205,26 +192,15 @@ ah_decrypt_inline (vlib_main_t * vm,
                  icv_padding_len =
                    ah_calc_icv_padding_len (icv_size, 0 /* is_ipv6 */ );
                }
-             hmac_calc (sa0->integ_alg, sa0->integ_key.data,
-                        sa0->integ_key.len, (u8 *) ih4, i_b0->current_length,
-                        sig, sa0->use_esn, sa0->seq_hi);
+             hmac_calc (vm, sa0, (u8 *) ih4, i_b0->current_length, sig);
 
              if (PREDICT_FALSE (memcmp (digest, sig, icv_size)))
                {
-                 vlib_node_increment_counter (vm, node->node_index,
-                                              AH_DECRYPT_ERROR_INTEG_ERROR,
-                                              1);
+                 i_b0->error = node->errors[AH_DECRYPT_ERROR_INTEG_ERROR];
                  goto trace;
                }
 
-             if (PREDICT_TRUE (sa0->use_anti_replay))
-               {
-                 if (PREDICT_TRUE (sa0->use_esn))
-                   esp_replay_advance_esn (sa0, seq);
-                 else
-                   esp_replay_advance (sa0, seq);
-               }
-
+             ipsec_sa_anti_replay_advance (sa0, &ah0->seq_no);
            }
 
          vlib_buffer_advance (i_b0,
@@ -232,7 +208,7 @@ ah_decrypt_inline (vlib_main_t * vm,
                               icv_padding_len);
          i_b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
 
-         if (PREDICT_TRUE (sa0->is_tunnel))
+         if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
            {                   /* tunnel mode */
              if (PREDICT_TRUE (ah0->nexthdr == IP_PROTOCOL_IP_IN_IP))
                next0 = AH_DECRYPT_NEXT_IP4_INPUT;
@@ -240,9 +216,8 @@ ah_decrypt_inline (vlib_main_t * vm,
                next0 = AH_DECRYPT_NEXT_IP6_INPUT;
              else
                {
-                 vlib_node_increment_counter (vm, node->node_index,
-                                              AH_DECRYPT_ERROR_DECRYPTION_FAILED,
-                                              1);
+                 i_b0->error =
+                   node->errors[AH_DECRYPT_ERROR_DECRYPTION_FAILED];
                  goto trace;
                }
            }
@@ -284,12 +259,9 @@ ah_decrypt_inline (vlib_main_t * vm,
            }
 
          /* for IPSec-GRE tunnel next node is ipsec-gre-input */
-         if (PREDICT_FALSE
-             ((vnet_buffer (i_b0)->ipsec.flags) &
-              IPSEC_FLAG_IPSEC_GRE_TUNNEL))
+         if (PREDICT_FALSE (ipsec_sa_is_set_IS_GRE (sa0)))
            next0 = AH_DECRYPT_NEXT_IPSEC_GRE_INPUT;
 
-
          vnet_buffer (i_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
        trace:
          if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED))