Line data    Source code

       1             : /*
       2             :  * ipip_api.c - ipip api
       3             :  *
       4             :  * Copyright (c) 2018 Cisco and/or its affiliates.
       5             :  * Licensed under the Apache License, Version 2.0 (the "License");
       6             :  * you may not use this file except in compliance with the License.
       7             :  * You may obtain a copy of the License at:
       8             :  *
       9             :  *     http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  * Unless required by applicable law or agreed to in writing, software
      12             :  * distributed under the License is distributed on an "AS IS" BASIS,
      13             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  * See the License for the specific language governing permissions and
      15             :  * limitations under the License.
      16             :  */
      17             : 
      18             : #include <vlibmemory/api.h>
      19             : #include <vnet/api_errno.h>
      20             : #include <vnet/fib/fib_table.h>
      21             : #include <vnet/interface.h>
      22             : #include <vnet/ipip/ipip.h>
      23             : #include <vnet/vnet.h>
      24             : #include <vnet/ip/ip_types_api.h>
      25             : #include <vnet/tunnel/tunnel_types_api.h>
      26             : 
      27             : #include <vnet/ipip/ipip.api_enum.h>
      28             : #include <vnet/ipip/ipip.api_types.h>
      29             : 
      30             : #define REPLY_MSG_ID_BASE im->msg_id_base
      31             : #include <vlibapi/api_helper_macros.h>
      32             : 
      33             : static void
      34         106 : vl_api_ipip_add_tunnel_t_handler (vl_api_ipip_add_tunnel_t * mp)
      35             : {
      36         106 :   ipip_main_t *im = &ipip_main;
      37             :   vl_api_ipip_add_tunnel_reply_t *rmp;
      38         106 :   int rv = 0;
      39         106 :   u32 fib_index, sw_if_index = ~0;
      40             :   tunnel_encap_decap_flags_t flags;
      41             :   ip46_address_t src, dst;
      42             :   ip46_type_t itype[2];
      43             :   tunnel_mode_t mode;
      44             : 
      45         106 :   itype[0] = ip_address_decode (&mp->tunnel.src, &src);
      46         106 :   itype[1] = ip_address_decode (&mp->tunnel.dst, &dst);
      47             : 
      48         106 :   if (itype[0] != itype[1])
      49             :     {
      50           0 :       rv = VNET_API_ERROR_INVALID_PROTOCOL;
      51           0 :       goto out;
      52             :     }
      53             : 
      54         106 :   if (ip46_address_is_equal (&src, &dst))
      55             :     {
      56           0 :       rv = VNET_API_ERROR_SAME_SRC_DST;
      57           0 :       goto out;
      58             :     }
      59             : 
      60         106 :   rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags);
      61             : 
      62         106 :   if (rv)
      63           0 :     goto out;
      64             : 
      65         106 :   rv = tunnel_mode_decode (mp->tunnel.mode, &mode);
      66             : 
      67         106 :   if (rv)
      68           0 :     goto out;
      69             : 
      70         106 :   fib_index = fib_table_find (fib_proto_from_ip46 (itype[0]),
      71             :                               ntohl (mp->tunnel.table_id));
      72             : 
      73         106 :   if (~0 == fib_index)
      74             :     {
      75           0 :       rv = VNET_API_ERROR_NO_SUCH_FIB;
      76             :     }
      77             :   else
      78             :     {
      79         106 :       rv = ipip_add_tunnel ((itype[0] == IP46_TYPE_IP6 ?
      80             :                              IPIP_TRANSPORT_IP6 :
      81             :                              IPIP_TRANSPORT_IP4),
      82             :                             ntohl (mp->tunnel.instance), &src, &dst,
      83             :                             fib_index, flags,
      84         106 :                             ip_dscp_decode (mp->tunnel.dscp), mode,
      85             :                             &sw_if_index);
      86             :     }
      87             : 
      88         106 : out:
      89             :   /* *INDENT-OFF* */
      90         106 :   REPLY_MACRO2(VL_API_IPIP_ADD_TUNNEL_REPLY,
      91             :   ({
      92             :     rmp->sw_if_index = ntohl(sw_if_index);
      93             :   }));
      94             :   /* *INDENT-ON* */
      95             : }
      96             : 
      97             : static void
      98         106 : vl_api_ipip_del_tunnel_t_handler (vl_api_ipip_del_tunnel_t * mp)
      99             : {
     100         106 :   ipip_main_t *im = &ipip_main;
     101             :   vl_api_ipip_del_tunnel_reply_t *rmp;
     102             : 
     103         106 :   int rv = ipip_del_tunnel (ntohl (mp->sw_if_index));
     104             : 
     105         106 :   REPLY_MACRO (VL_API_IPIP_DEL_TUNNEL_REPLY);
     106             : }
     107             : 
     108             : static vl_api_tunnel_mode_t
     109         468 : ipip_tunnel_mode_encode (ipip_mode_t mode)
     110             : {
     111         468 :   switch (mode)
     112             :     {
     113         462 :     case IPIP_MODE_P2P:
     114         462 :       return TUNNEL_API_MODE_P2P;
     115           6 :     case IPIP_MODE_P2MP:
     116           6 :       return TUNNEL_API_MODE_MP;
     117           0 :     case IPIP_MODE_6RD:
     118           0 :       return TUNNEL_API_MODE_P2P;
     119           0 :     default:
     120           0 :       return TUNNEL_API_MODE_P2P;
     121             :     }
     122             : }
     123             : 
     124             : static void
     125         468 : send_ipip_tunnel_details (ipip_tunnel_t * t, vl_api_ipip_tunnel_dump_t * mp)
     126             : {
     127         468 :   ipip_main_t *im = &ipip_main;
     128             :   vl_api_ipip_tunnel_details_t *rmp;
     129         468 :   bool is_ipv6 = t->transport == IPIP_TRANSPORT_IP6 ? true : false;
     130             :   fib_table_t *ft;
     131             : 
     132         468 :   ft = fib_table_get (t->fib_index,
     133             :                       (is_ipv6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4));
     134             : 
     135             :   /* *INDENT-OFF* */
     136         468 :   REPLY_MACRO_DETAILS2(VL_API_IPIP_TUNNEL_DETAILS,
     137             :   ({
     138             :     ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src);
     139             :     ip_address_encode (&t->tunnel_dst, IP46_TYPE_ANY, &rmp->tunnel.dst);
     140             :     rmp->tunnel.table_id = htonl (ft->ft_table_id);
     141             :     rmp->tunnel.instance = htonl (t->user_instance);
     142             :     rmp->tunnel.sw_if_index = htonl (t->sw_if_index);
     143             :     rmp->tunnel.dscp = ip_dscp_encode(t->dscp);
     144             :     rmp->tunnel.flags = tunnel_encap_decap_flags_encode(t->flags);
     145             :     rmp->tunnel.mode = ipip_tunnel_mode_encode (t->mode);
     146             :   }));
     147             :     /* *INDENT-ON* */
     148             : }
     149             : 
     150             : static void
     151         267 : vl_api_ipip_tunnel_dump_t_handler (vl_api_ipip_tunnel_dump_t * mp)
     152             : {
     153         267 :   ipip_main_t *im = &ipip_main;
     154             :   ipip_tunnel_t *t;
     155             :   u32 sw_if_index;
     156             : 
     157         267 :   sw_if_index = ntohl (mp->sw_if_index);
     158             : 
     159         267 :   if (sw_if_index == ~0)
     160             :     {
     161             :     /* *INDENT-OFF* */
     162         545 :     pool_foreach (t, im->tunnels)
     163             :      {
     164         373 :       send_ipip_tunnel_details(t, mp);
     165             :     }
     166             :     /* *INDENT-ON* */
     167             :     }
     168             :   else
     169             :     {
     170          95 :       t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
     171          95 :       if (t)
     172          95 :         send_ipip_tunnel_details (t, mp);
     173             :     }
     174         267 : }
     175             : 
     176             : static void
     177          11 : vl_api_ipip_6rd_add_tunnel_t_handler (vl_api_ipip_6rd_add_tunnel_t * mp)
     178             : {
     179          11 :   ipip_main_t *im = &ipip_main;
     180             :   vl_api_ipip_6rd_add_tunnel_reply_t *rmp;
     181             :   u32 sixrd_tunnel_index, ip4_fib_index, ip6_fib_index;
     182             :   int rv;
     183             : 
     184          11 :   sixrd_tunnel_index = ~0;
     185          11 :   ip4_fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->ip4_table_id));
     186          11 :   ip6_fib_index = fib_table_find (FIB_PROTOCOL_IP6, ntohl (mp->ip6_table_id));
     187             : 
     188          11 :   if (~0 == ip4_fib_index || ~0 == ip6_fib_index)
     189             : 
     190             :     {
     191           0 :       rv = VNET_API_ERROR_NO_SUCH_FIB;
     192             :     }
     193             :   else
     194             :     {
     195          11 :       rv = sixrd_add_tunnel ((ip6_address_t *) & mp->ip6_prefix.address,
     196          11 :                              mp->ip6_prefix.len,
     197          11 :                              (ip4_address_t *) & mp->ip4_prefix.address,
     198          11 :                              mp->ip4_prefix.len,
     199          11 :                              (ip4_address_t *) & mp->ip4_src,
     200          11 :                              mp->security_check,
     201             :                              ip4_fib_index, ip6_fib_index,
     202             :                              &sixrd_tunnel_index);
     203             :     }
     204             : 
     205             :   /* *INDENT-OFF* */
     206          11 :   REPLY_MACRO2 (VL_API_IPIP_6RD_ADD_TUNNEL_REPLY,
     207             :   ({
     208             :     rmp->sw_if_index = htonl (sixrd_tunnel_index);
     209             :   }));
     210             :   /* *INDENT-ON* */
     211             : }
     212             : 
     213             : static void
     214          11 : vl_api_ipip_6rd_del_tunnel_t_handler (vl_api_ipip_6rd_del_tunnel_t * mp)
     215             : {
     216          11 :   ipip_main_t *im = &ipip_main;
     217             :   vl_api_ipip_6rd_del_tunnel_reply_t *rmp;
     218             : 
     219          11 :   int rv = sixrd_del_tunnel (ntohl (mp->sw_if_index));
     220             : 
     221          11 :   REPLY_MACRO (VL_API_IPIP_6RD_DEL_TUNNEL_REPLY);
     222             : }
     223             : 
     224             : /*
     225             :  * ipip_api_hookup
     226             :  * Add vpe's API message handlers to the table.
     227             :  * vlib has already mapped shared memory and
     228             :  * added the client registration handlers.
     229             :  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
     230             :  */
     231             : /* API definitions */
     232             : #include <vnet/format_fns.h>
     233             : #include <vnet/ipip/ipip.api.c>
     234             : 
     235             : static clib_error_t *
     236         575 : ipip_api_hookup (vlib_main_t * vm)
     237             : {
     238         575 :   ipip_main_t *im = &ipip_main;
     239             : 
     240             :   /*
     241             :    * Set up the (msg_name, crc, message-id) table
     242             :    */
     243         575 :   im->msg_id_base = setup_message_id_table ();
     244             : 
     245         575 :   return 0;
     246             : }
     247             : 
     248        9791 : VLIB_API_INIT_FUNCTION (ipip_api_hookup);
     249             : 
     250             : /*
     251             :  * fd.io coding-style-patch-verification: ON
     252             :  *
     253             :  * Local Variables:
     254             :  * eval: (c-set-style "gnu")
     255             :  * End:
     256             :  */