ikev2: Responder honours the protected tunnel config
[vpp.git] / src / plugins / ikev2 / ikev2.c
index 03448b9..75b9dcb 100644 (file)
@@ -37,7 +37,7 @@ static int ikev2_delete_tunnel_interface (vnet_main_t * vnm,
 
 #define ikev2_set_state(sa, v) do { \
     (sa)->state = v; \
-    clib_warning("sa state changed to " #v); \
+    ikev2_elog_sa_state("ispi %lx SA state changed to " #v, sa->ispi); \
   } while(0);
 
 typedef struct
@@ -171,9 +171,6 @@ ikev2_select_proposal (ikev2_sa_proposal_t * proposals,
        }
     }
 
-    clib_warning ("bitmap is %x mandatory is %x optional is %x",
-                 bitmap, mandatory_bitmap, optional_bitmap);
-
     if ((bitmap & mandatory_bitmap) == mandatory_bitmap &&
        (bitmap & ~optional_bitmap) == 0)
       {
@@ -346,8 +343,6 @@ ikev2_generate_sa_init_data (ikev2_sa_t * sa)
 
   if (!t)
     {
-      clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group,
-                   vec_len (sa->i_dh_data));
       sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
       return;
     }
@@ -394,6 +389,8 @@ ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai)
   sa->i_id.type = sai->i_id.type;
   sa->profile_index = sai->profile_index;
   sa->is_profile_index_set = sai->is_profile_index_set;
+  sa->tun_itf = sai->tun_itf;
+  sa->is_tun_itf_set = sai->is_tun_itf_set;
   sa->i_id.data = _(sai->i_id.data);
   sa->i_auth.method = sai->i_auth.method;
   sa->i_auth.hex = sai->i_auth.hex;
@@ -421,8 +418,6 @@ ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai)
 
   if (!t)
     {
-      clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group,
-                   vec_len (sa->i_dh_data));
       sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
       return;
     }
@@ -596,13 +591,10 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa,
   u32 len = clib_net_to_host_u32 (ike->length);
   u8 payload = ike->nextpayload;
 
-  clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
-               "exchange %x flags %x msgid %x length %u",
-               clib_net_to_host_u64 (ike->ispi),
-               clib_net_to_host_u64 (ike->rspi),
-               payload, ike->version,
-               ike->exchange, ike->flags,
-               clib_net_to_host_u32 (ike->msgid), len);
+  ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT request received "
+                      "from %d.%d.%d.%d",
+                      clib_net_to_host_u64 (ike->ispi),
+                      clib_net_to_host_u64 (ike->rspi), sa->iaddr.as_u32);
 
   sa->ispi = clib_net_to_host_u64 (ike->ispi);
 
@@ -646,8 +638,8 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa,
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u", payload,
-                       ikep->flags, plen);
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          payload);
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
              ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
@@ -671,17 +663,13 @@ ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa,
   u32 len = clib_net_to_host_u32 (ike->length);
   u8 payload = ike->nextpayload;
 
-  clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
-               "exchange %x flags %x msgid %x length %u",
-               clib_net_to_host_u64 (ike->ispi),
-               clib_net_to_host_u64 (ike->rspi),
-               payload, ike->version,
-               ike->exchange, ike->flags,
-               clib_net_to_host_u32 (ike->msgid), len);
-
   sa->ispi = clib_net_to_host_u64 (ike->ispi);
   sa->rspi = clib_net_to_host_u64 (ike->rspi);
 
+  ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT response received "
+                      "from %d.%d.%d.%d", sa->ispi, sa->rspi,
+                      sa->raddr.as_u32);
+
   /* store whole IKE payload - needed for PSK auth */
   vec_free (sa->last_sa_init_res_packet_data);
   vec_add (sa->last_sa_init_res_packet_data, ike, len);
@@ -728,8 +716,8 @@ ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa,
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u", payload,
-                       ikep->flags, plen);
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          payload);
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
              ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
@@ -767,13 +755,12 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload)
 
       if (*payload == IKEV2_PAYLOAD_SK)
        {
-         clib_warning ("received IKEv2 payload SK, len %u", plen - 4);
          last_payload = *payload;
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u", payload,
-                       ikep->flags, plen);
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          *payload);
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
              sa->unsupported_cp = *payload;
@@ -787,7 +774,7 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload)
 
   if (last_payload != IKEV2_PAYLOAD_SK)
     {
-      clib_warning ("Last payload must be SK");
+      ikev2_elog_error ("Last payload must be SK");
       return 0;
     }
 
@@ -799,7 +786,7 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload)
 
   if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc))
     {
-      clib_warning ("message integrity check failed");
+      ikev2_elog_error ("message integrity check failed");
       vec_free (hmac);
       return 0;
     }
@@ -845,6 +832,9 @@ ikev2_initial_contact_cleanup (ikev2_sa_t * sa)
 
   vec_free (delete);
   sa->initial_contact = 0;
+
+  km->log_level = IKEV2_LOG_ERROR;
+  km->log_class = vlib_log_register_class ("ikev2", 0);
 }
 
 static void
@@ -852,20 +842,16 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
 {
   ikev2_child_sa_t *first_child_sa;
   int p = 0;
-  u32 len = clib_net_to_host_u32 (ike->length);
   u8 payload = ike->nextpayload;
   u8 *plaintext = 0;
-
   ike_payload_header_t *ikep;
   u32 plen;
 
-  clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
-               "exchange %x flags %x msgid %x length %u",
-               clib_net_to_host_u64 (ike->ispi),
-               clib_net_to_host_u64 (ike->rspi),
-               payload, ike->version,
-               ike->exchange, ike->flags,
-               clib_net_to_host_u32 (ike->msgid), len);
+  ikev2_elog_exchange ("ispi %lx rspi %lx EXCHANGE_IKE_AUTH received "
+                      "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+                      clib_host_to_net_u64 (ike->rspi),
+                      sa->is_initiator ? sa->raddr.as_u32 : sa->
+                      iaddr.as_u32);
 
   ikev2_calc_keys (sa);
 
@@ -902,7 +888,6 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
 
       if (payload == IKEV2_PAYLOAD_SA) /* 33 */
        {
-         clib_warning ("received payload SA, len %u", plen - sizeof (*ikep));
          if (sa->is_initiator)
            {
              ikev2_sa_free_proposal_vector (&first_child_sa->r_proposals);
@@ -921,9 +906,6 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
          sa->i_id.type = id->id_type;
          vec_free (sa->i_id.data);
          vec_add (sa->i_id.data, id->payload, plen - sizeof (*id));
-
-         clib_warning ("received payload IDi, len %u id_type %u",
-                       plen - sizeof (*id), id->id_type);
        }
       else if (payload == IKEV2_PAYLOAD_IDR)   /* 36 */
        {
@@ -932,9 +914,6 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
          sa->r_id.type = id->id_type;
          vec_free (sa->r_id.data);
          vec_add (sa->r_id.data, id->payload, plen - sizeof (*id));
-
-         clib_warning ("received payload IDr len %u id_type %u",
-                       plen - sizeof (*id), id->id_type);
        }
       else if (payload == IKEV2_PAYLOAD_AUTH)  /* 39 */
        {
@@ -952,9 +931,6 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
              vec_free (sa->i_auth.data);
              vec_add (sa->i_auth.data, a->payload, plen - sizeof (*a));
            }
-
-         clib_warning ("received payload AUTH, len %u auth_type %u",
-                       plen - sizeof (*a), a->auth_method);
        }
       else if (payload == IKEV2_PAYLOAD_NOTIFY)        /* 41 */
        {
@@ -971,25 +947,18 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
        }
       else if (payload == IKEV2_PAYLOAD_TSI)   /* 44 */
        {
-         clib_warning ("received payload TSi, len %u",
-                       plen - sizeof (*ikep));
-
          vec_free (first_child_sa->tsi);
          first_child_sa->tsi = ikev2_parse_ts_payload (ikep);
        }
       else if (payload == IKEV2_PAYLOAD_TSR)   /* 45 */
        {
-         clib_warning ("received payload TSr, len %u",
-                       plen - sizeof (*ikep));
-
          vec_free (first_child_sa->tsr);
          first_child_sa->tsr = ikev2_parse_ts_payload (ikep);
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u data %u",
-                       payload, ikep->flags, plen - 4,
-                       format_hex_bytes, ikep->payload, plen - 4);
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          payload);
 
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
@@ -1012,20 +981,14 @@ ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa,
                                 ike_header_t * ike)
 {
   int p = 0;
-  u32 len = clib_net_to_host_u32 (ike->length);
   u8 payload = ike->nextpayload;
   u8 *plaintext = 0;
-
   ike_payload_header_t *ikep;
   u32 plen;
 
-  clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
-               "exchange %x flags %x msgid %x length %u",
-               clib_net_to_host_u64 (ike->ispi),
-               clib_net_to_host_u64 (ike->rspi),
-               payload, ike->version,
-               ike->exchange, ike->flags,
-               clib_net_to_host_u32 (ike->msgid), len);
+  ikev2_elog_exchange ("ispi %lx rspi %lx INFORMATIONAL received "
+                      "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+                      clib_host_to_net_u64 (ike->rspi), sa->iaddr.as_u32);
 
   plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
 
@@ -1059,10 +1022,8 @@ ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa,
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u data %u",
-                       payload, ikep->flags, plen - 4,
-                       format_hex_bytes, ikep->payload, plen - 4);
-
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          payload);
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
              sa->unsupported_cp = payload;
@@ -1083,7 +1044,6 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa,
                                   ike_header_t * ike)
 {
   int p = 0;
-  u32 len = clib_net_to_host_u32 (ike->length);
   u8 payload = ike->nextpayload;
   u8 *plaintext = 0;
   u8 rekeying = 0;
@@ -1097,13 +1057,9 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa,
   ikev2_sa_proposal_t *proposal = 0;
   ikev2_child_sa_t *child_sa;
 
-  clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
-               "exchange %x flags %x msgid %x length %u",
-               clib_net_to_host_u64 (ike->ispi),
-               clib_net_to_host_u64 (ike->rspi),
-               payload, ike->version,
-               ike->exchange, ike->flags,
-               clib_net_to_host_u32 (ike->msgid), len);
+  ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received "
+                      "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+                      clib_host_to_net_u64 (ike->rspi), sa->raddr.as_u32);
 
   plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
 
@@ -1154,10 +1110,8 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa,
        }
       else
        {
-         clib_warning ("unknown payload %u flags %x length %u data %u",
-                       payload, ikep->flags, plen - 4,
-                       format_hex_bytes, ikep->payload, plen - 4);
-
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+                          payload);
          if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
            {
              sa->unsupported_cp = payload;
@@ -1194,7 +1148,8 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa,
       child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
       if (!child_sa)
        {
-         clib_warning ("child SA spi %lx not found", n->spi);
+         ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
+                          n->spi);
          goto cleanup_and_exit;
        }
       vec_add2 (sa->rekey, rekey, 1);
@@ -1356,8 +1311,9 @@ ikev2_sa_auth (ikev2_sa_t * sa)
   if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
        sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
     {
-      clib_warning ("unsupported authentication method %u",
-                   sa->i_auth.method);
+      ikev2_elog_uint (IKEV2_LOG_ERROR,
+                      "unsupported authentication method %u",
+                      sa->i_auth.method);
       ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
       return;
     }
@@ -1453,10 +1409,18 @@ ikev2_sa_auth (ikev2_sa_t * sa)
          sa->childs[0].r_proposals =
            ikev2_select_proposal (sa->childs[0].i_proposals,
                                   IKEV2_PROTOCOL_ESP);
+
+         if (~0 != sel_p->tun_itf)
+           {
+             sa->is_tun_itf_set = 1;
+             sa->tun_itf = sel_p->tun_itf;
+           }
        }
     }
   else
     {
+      ikev2_elog_uint (IKEV2_LOG_ERROR, "authentication failed, no matching "
+                      "profile found! ispi %lx", sa->ispi);
       ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
     }
   vec_free (psk);
@@ -1478,8 +1442,9 @@ ikev2_sa_auth_init (ikev2_sa_t * sa)
   if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
        sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
     {
-      clib_warning ("unsupported authentication method %u",
-                   sa->i_auth.method);
+      ikev2_elog_uint (IKEV2_LOG_ERROR,
+                      "unsupported authentication method %u",
+                      sa->i_auth.method);
       ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
       return;
     }
@@ -1521,6 +1486,7 @@ ikev2_mk_remote_sa_id (u32 sai, u32 ci, u32 ti)
 
 typedef struct
 {
+  u32 sw_if_index;
   u32 salt_local;
   u32 salt_remote;
   u32 local_sa_id;
@@ -1540,27 +1506,32 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a)
 {
   ikev2_main_t *km = &ikev2_main;
   u32 sw_if_index;
-  int rv;
-  uword *p = 0;
-
-  rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
-                       &a->local_ip, &a->remote_ip, 0,
-                       TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
-                       TUNNEL_MODE_P2P, &sw_if_index);
+  int rv = 0;
 
-  if (rv == VNET_API_ERROR_IF_ALREADY_EXISTS)
+  if (~0 == a->sw_if_index)
     {
-      p = hash_get (km->sw_if_indices, sw_if_index);
-      if (p)
-       /* interface is managed by IKE; proceed with updating SAs */
-       rv = 0;
+      /* no tunnel associated with the SA/profile - create a new one */
+      rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
+                           &a->local_ip, &a->remote_ip, 0,
+                           TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
+                           TUNNEL_MODE_P2P, &sw_if_index);
+
+      if (rv == VNET_API_ERROR_IF_ALREADY_EXISTS)
+       {
+         if (hash_get (km->sw_if_indices, sw_if_index))
+           /* interface is managed by IKE; proceed with updating SAs */
+           rv = 0;
+       }
+      hash_set1 (km->sw_if_indices, sw_if_index);
     }
+  else
+    sw_if_index = a->sw_if_index;
 
   if (rv)
     {
-      clib_warning ("installing ipip tunnel failed! loc:%U rem:%U",
-                   format_ip4_address, &a->local_ip,
-                   format_ip4_address, &a->remote_ip);
+      ikev2_elog_peers (IKEV2_LOG_ERROR, "installing ipip tunnel failed! "
+                       "loc:%d.%d.%d.%d rem:%d.%d.%d.%d",
+                       a->local_ip.ip4.as_u32, a->remote_ip.ip4.as_u32);
       return;
     }
 
@@ -1580,7 +1551,6 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a)
   u32 *sas_in = NULL;
   vec_add1 (sas_in, a->remote_sa_id);
   rv |= ipsec_tun_protect_update (sw_if_index, a->local_sa_id, sas_in);
-  hash_set1 (km->sw_if_indices, sw_if_index);
 }
 
 static int
@@ -1771,10 +1741,10 @@ ikev2_create_tunnel_interface (vnet_main_t * vnm,
     }
 
   if (thread_index & 0xffffffc0)
-    clib_warning ("error: thread index exceeds max range 0x3f!");
+    ikev2_elog_error ("error: thread index exceeds max range 0x3f!");
 
   if (child_index & 0xfffff000 || sa_index & 0xfffff000)
-    clib_warning ("error: sa/child index exceeds max range 0xfff!");
+    ikev2_elog_error ("error: sa/child index exceeds max range 0xfff!");
 
   child->local_sa_id =
     a.local_sa_id =
@@ -1782,6 +1752,7 @@ ikev2_create_tunnel_interface (vnet_main_t * vnm,
   child->remote_sa_id =
     a.remote_sa_id =
     ikev2_mk_remote_sa_id (sa_index, child_index, thread_index);
+  a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
 
   vl_api_rpc_call_main_thread (ikev2_add_tunnel_from_main,
                               (u8 *) & a, sizeof (a));
@@ -1794,32 +1765,48 @@ typedef struct
   ip46_address_t remote_ip;
   u32 remote_sa_id;
   u32 local_sa_id;
+  u32 sw_if_index;
 } ikev2_del_ipsec_tunnel_args_t;
 
 static void
 ikev2_del_tunnel_from_main (ikev2_del_ipsec_tunnel_args_t * a)
 {
   ikev2_main_t *km = &ikev2_main;
-  /* *INDENT-OFF* */
-  ipip_tunnel_key_t key = {
-    .src = a->local_ip,
-    .dst = a->remote_ip,
-    .transport = IPIP_TRANSPORT_IP4,
-    .fib_index = 0,
-  };
-  ipip_tunnel_t *ipip;
-  /* *INDENT-ON* */
-
-  ipip = ipip_tunnel_db_find (&key);
+  ipip_tunnel_t *ipip = NULL;
+  u32 sw_if_index;
 
-  if (ipip)
+  if (~0 == a->sw_if_index)
     {
-      hash_unset (km->sw_if_indices, ipip->sw_if_index);
-      ipsec_tun_protect_del (ipip->sw_if_index);
-      ipsec_sa_unlock_id (a->remote_sa_id);
-      ipsec_sa_unlock_id (a->local_sa_id);
-      ipip_del_tunnel (ipip->sw_if_index);
+    /* *INDENT-OFF* */
+    ipip_tunnel_key_t key = {
+      .src = a->local_ip,
+      .dst = a->remote_ip,
+      .transport = IPIP_TRANSPORT_IP4,
+      .fib_index = 0,
+    };
+    /* *INDENT-ON* */
+
+      ipip = ipip_tunnel_db_find (&key);
+
+      if (ipip)
+       {
+         sw_if_index = ipip->sw_if_index;
+         hash_unset (km->sw_if_indices, ipip->sw_if_index);
+       }
+      else
+       sw_if_index = ~0;
     }
+  else
+    sw_if_index = a->sw_if_index;
+
+  if (~0 != sw_if_index)
+    ipsec_tun_protect_del (sw_if_index);
+
+  ipsec_sa_unlock_id (a->remote_sa_id);
+  ipsec_sa_unlock_id (a->local_sa_id);
+
+  if (ipip)
+    ipip_del_tunnel (ipip->sw_if_index);
 }
 
 static int
@@ -1843,6 +1830,7 @@ ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa,
 
   a.remote_sa_id = child->remote_sa_id;
   a.local_sa_id = child->local_sa_id;
+  a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
 
   vl_api_rpc_call_main_thread (ikev2_del_tunnel_from_main, (u8 *) & a,
                               sizeof (a));
@@ -2174,17 +2162,21 @@ ikev2_retransmit_sa_init (ike_header_t * ike,
                       ike->length = tmp->length;
                       clib_memcpy_fast(ike->payload, tmp->payload,
                              clib_net_to_host_u32(tmp->length) - sizeof(*ike));
-                      clib_warning("IKE_SA_INIT retransmit from %U to %U",
-                                   format_ip4_address, &raddr,
-                                   format_ip4_address, &iaddr);
+                      ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
+                                             "ispi %lx IKE_SA_INIT retransmit "
+                                             "from %d.%d.%d.%d to %d.%d.%d.%d",
+                                             ike->ispi,
+                                             raddr.as_u32, iaddr.as_u32);
                       return 1;
                     }
                   /* else ignore req */
                   else
                     {
-                      clib_warning("IKE_SA_INIT ignore from %U to %U",
-                                   format_ip4_address, &raddr,
-                                   format_ip4_address, &iaddr);
+                      ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
+                                             "ispi %lx IKE_SA_INIT ignore "
+                                             "from %d.%d.%d.%d to %d.%d.%d.%d",
+                                             ike->ispi,
+                                             raddr.as_u32, iaddr.as_u32);
                       return -1;
                     }
                 }
@@ -2226,21 +2218,17 @@ ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike)
       ike->length = tmp->length;
       clib_memcpy_fast (ike->payload, tmp->payload,
                        clib_net_to_host_u32 (tmp->length) - sizeof (*ike));
-      clib_warning ("IKE msgid %u retransmit from %U to %U",
-                   msg_id,
-                   format_ip4_address, &sa->raddr,
-                   format_ip4_address, &sa->iaddr);
+      ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d",
+                            msg_id, sa->raddr.as_u32, sa->iaddr.as_u32);
       return 1;
     }
   /* old req ignore */
   else
     {
-      clib_warning ("IKE msgid %u req ignore from %U to %U",
-                   msg_id,
-                   format_ip4_address, &sa->raddr,
-                   format_ip4_address, &sa->iaddr);
-      return -1;
+      ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE req ignore msgid %d",
+                            msg_id, sa->raddr.as_u32, sa->iaddr.as_u32);
     }
+  return -1;
 }
 
 
@@ -2583,10 +2571,11 @@ ikev2_node_fn (vlib_main_t * vm,
            }
          else
            {
-             clib_warning ("IKEv2 exchange %u packet received from %U to %U",
-                           ike0->exchange,
-                           format_ip4_address, ip40->src_address.as_u8,
-                           format_ip4_address, ip40->dst_address.as_u8);
+             ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d "
+                                    "received from %d.%d.%d.%d to %d.%d.%d.%d",
+                                    ike0->exchange,
+                                    ip40->src_address.as_u32,
+                                    ip40->dst_address.as_u32);
            }
 
        dispatch0:
@@ -2717,7 +2706,7 @@ ikev2_set_initiator_proposals (vlib_main_t * vm, ikev2_sa_t * sa,
   }
   if (error)
     {
-      clib_warning
+      ikev2_elog_error
        ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG");
       r = clib_error_return (0, "Unsupported algorithm");
       return r;
@@ -2889,6 +2878,7 @@ ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
       clib_memset (p, 0, sizeof (*p));
       p->name = vec_dup (name);
       p->responder.sw_if_index = ~0;
+      p->tun_itf = ~0;
       uword index = p - km->profiles;
       mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
     }
@@ -3086,6 +3076,26 @@ ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name,
   return 0;
 }
 
+clib_error_t *
+ikev2_set_profile_tunnel_interface (vlib_main_t * vm,
+                                   u8 * name, u32 sw_if_index)
+{
+  ikev2_profile_t *p;
+  clib_error_t *r;
+
+  p = ikev2_profile_index_by_name (name);
+
+  if (!p)
+    {
+      r = clib_error_return (0, "unknown profile %v", name);
+      return r;
+    }
+
+  p->tun_itf = sw_if_index;
+
+  return 0;
+}
+
 clib_error_t *
 ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name,
                               u64 lifetime, u32 jitter, u32 handover,
@@ -3169,6 +3179,8 @@ ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
     sa.profile_index = km->profiles - p;
     sa.is_profile_index_set = 1;
     sa.state = IKEV2_STATE_SA_INIT;
+    sa.tun_itf = p->tun_itf;
+    sa.is_tun_itf_set = 1;
     ikev2_generate_sa_init_data (&sa);
     ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data);
     ikev2_payload_add_nonce (chain, sa.i_nonce);
@@ -3256,6 +3268,9 @@ ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
 
     ikev2_send_ike (vm, if_ip, &p->responder.ip4, bi0, len);
 
+    ikev2_elog_exchange ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to "
+                        "%d.%d.%d.%d", clib_host_to_net_u64 (sa0->ispi), 0,
+                        p->responder.ip4.as_u32);
   }
 
   return 0;
@@ -3548,8 +3563,8 @@ ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa)
          else if (csa->rekey_retries > 0)
            {
              csa->rekey_retries--;
-             clib_warning ("Rekeying Child SA 0x%x, retries left %d",
-                           csa->i_proposals->spi, csa->rekey_retries);
+             ikev2_log_debug ("Rekeying Child SA 0x%x, retries left %d",
+                              csa->i_proposals->spi, csa->rekey_retries);
              if (csa->rekey_retries == 0)
                {
                  csa->rekey_retries = -1;
@@ -3568,6 +3583,21 @@ ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa)
   return res;
 }
 
+int
+ikev2_set_log_level (ikev2_log_level_t log_level)
+{
+  ikev2_main_t *km = &ikev2_main;
+
+  if (log_level >= IKEV2_LOG_MAX)
+    {
+      ikev2_log_error ("unknown logging level %d", log_level);
+      return -1;
+    }
+
+  km->log_level = log_level;
+  return 0;
+}
+
 static void
 ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa)
 {