Line data    Source code

       1             : /*
       2             :  * srv6_end_m_gtp6_d_di_di.c
       3             :  *
       4             :  * Copyright (c) 2019 Arrcus Inc 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 <vnet/vnet.h>
      19             : #include <vnet/adj/adj.h>
      20             : #include <vnet/plugin/plugin.h>
      21             : #include <vpp/app/version.h>
      22             : #include <srv6-mobile/mobile.h>
      23             : 
      24             : srv6_end_main_v6_decap_di_t srv6_end_main_v6_decap_di;
      25             : 
      26             : static void
      27           0 : clb_dpo_lock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo)
      28             : {
      29           0 : }
      30             : 
      31             : static void
      32           0 : clb_dpo_unlock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo)
      33             : {
      34           0 : }
      35             : 
      36             : static u8 *
      37           0 : clb_dpo_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args)
      38             : {
      39           0 :   index_t index = va_arg (*args, index_t);
      40           0 :   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
      41             : 
      42           0 :   return (format (s, "SR: dynamic_proxy_index:[%u]", index));
      43             : }
      44             : 
      45             : const static dpo_vft_t dpo_vft = {
      46             :   .dv_lock = clb_dpo_lock_srv6_end_m_gtp6_d_di,
      47             :   .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_d_di,
      48             :   .dv_format = clb_dpo_format_srv6_end_m_gtp6_d_di,
      49             : };
      50             : 
      51             : const static char *const srv6_end_m_gtp6_d_di_nodes[] = {
      52             :   "srv6-end-m-gtp6-d-di",
      53             :   NULL,
      54             : };
      55             : 
      56             : const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
      57             :   [DPO_PROTO_IP6] = srv6_end_m_gtp6_d_di_nodes,
      58             : };
      59             : 
      60             : static u8 fn_name[] = "SRv6-End.M.GTP6.D.DI-plugin";
      61             : static u8 keyword_str[] = "end.m.gtp6.d.di";
      62             : static u8 def_str[] =
      63             :   "Endpoint function with drop-in dencapsulation for IPv6/GTP tunnel";
      64             : static u8 param_str[] = "<sr-prefix>/<sr-prefixlen> [nhtype <nhtype>]";
      65             : 
      66             : static u8 *
      67           0 : clb_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args)
      68             : {
      69           0 :   srv6_end_gtp6_d_param_t *ls_mem = va_arg (*args, void *);
      70             : 
      71           0 :   s = format (s, "SRv6 End gtp6.d Drop-in\n\t");
      72             : 
      73             :   s =
      74           0 :     format (s, "SR Prefix: %U/%d", format_ip6_address, &ls_mem->sr_prefix,
      75             :             ls_mem->sr_prefixlen);
      76             : 
      77           0 :   if (ls_mem->nhtype != SRV6_NHTYPE_NONE)
      78             :     {
      79           0 :       if (ls_mem->nhtype == SRV6_NHTYPE_IPV4)
      80           0 :         s = format (s, ", NHType IPv4\n");
      81           0 :       else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6)
      82           0 :         s = format (s, ", NHType IPv6\n");
      83           0 :       else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP)
      84           0 :         s = format (s, ", NHType Non-IP\n");
      85             :       else
      86           0 :         s = format (s, ", NHType Unknow(%d)\n", ls_mem->nhtype);
      87             :     }
      88             :   else
      89           0 :     s = format (s, "\n");
      90             : 
      91           0 :   return s;
      92             : }
      93             : 
      94             : static uword
      95           0 : clb_unformat_srv6_end_m_gtp6_d_di (unformat_input_t * input, va_list * args)
      96             : {
      97           0 :   void **plugin_mem_p = va_arg (*args, void **);
      98             :   srv6_end_gtp6_d_param_t *ls_mem;
      99             :   ip6_address_t sr_prefix;
     100           0 :   u32 sr_prefixlen = 0;
     101             :   u8 nhtype;
     102             : 
     103           0 :   if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv4",
     104             :                 unformat_ip6_address, &sr_prefix, &sr_prefixlen))
     105             :     {
     106           0 :       nhtype = SRV6_NHTYPE_IPV4;
     107             :     }
     108           0 :   else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv6",
     109             :                      unformat_ip6_address, &sr_prefix, &sr_prefixlen))
     110             :     {
     111           0 :       nhtype = SRV6_NHTYPE_IPV6;
     112             :     }
     113           0 :   else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype non-ip",
     114             :                      unformat_ip6_address, &sr_prefix, &sr_prefixlen))
     115             :     {
     116           0 :       nhtype = SRV6_NHTYPE_NON_IP;
     117             :     }
     118           0 :   else if (unformat (input, "end.m.gtp6.d.di %U/%d",
     119             :                      unformat_ip6_address, &sr_prefix, &sr_prefixlen))
     120             :     {
     121           0 :       nhtype = SRV6_NHTYPE_NONE;
     122             :     }
     123             :   else
     124             :     {
     125           0 :       return 0;
     126             :     }
     127             : 
     128           0 :   ls_mem = clib_mem_alloc (sizeof *ls_mem);
     129           0 :   clib_memset (ls_mem, 0, sizeof *ls_mem);
     130           0 :   *plugin_mem_p = ls_mem;
     131             : 
     132           0 :   ls_mem->sr_prefix = sr_prefix;
     133           0 :   ls_mem->sr_prefixlen = sr_prefixlen;
     134           0 :   ls_mem->nhtype = nhtype;
     135             : 
     136           0 :   return 1;
     137             : }
     138             : 
     139             : static int
     140           0 : clb_creation_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid)
     141             : {
     142           0 :   return 0;
     143             : }
     144             : 
     145             : static int
     146           0 : clb_removal_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid)
     147             : {
     148             :   srv6_end_gtp6_d_param_t *ls_mem;
     149             : 
     150           0 :   ls_mem = localsid->plugin_mem;
     151             : 
     152           0 :   clib_mem_free (ls_mem);
     153             : 
     154           0 :   return 0;
     155             : }
     156             : 
     157             : static clib_error_t *
     158         559 : srv6_end_m_gtp6_d_di_init (vlib_main_t * vm)
     159             : {
     160         559 :   srv6_end_main_v6_decap_di_t *sm = &srv6_end_main_v6_decap_di;
     161             :   ip6srv_combo_header_t *ip6;
     162             :   dpo_type_t dpo_type;
     163             :   vlib_node_t *node;
     164             :   int rc;
     165             : 
     166         559 :   sm->vlib_main = vm;
     167         559 :   sm->vnet_main = vnet_get_main ();
     168             : 
     169         559 :   node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-d-di");
     170         559 :   sm->end_m_gtp6_d_di_node_index = node->index;
     171             : 
     172         559 :   node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
     173         559 :   sm->error_node_index = node->index;
     174             : 
     175         559 :   ip6 = &sm->cache_hdr;
     176             : 
     177         559 :   clib_memset_u8 (ip6, 0, sizeof (ip6srv_combo_header_t));
     178             : 
     179             :   // IPv6 header (default)
     180         559 :   ip6->ip.ip_version_traffic_class_and_flow_label = 0x60;
     181         559 :   ip6->ip.hop_limit = 64;
     182         559 :   ip6->ip.protocol = IPPROTO_IPV6_ROUTE;
     183             : 
     184             :   // SR header (default)
     185         559 :   ip6->sr.type = 4;
     186             : 
     187         559 :   dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
     188             : 
     189         559 :   rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128,        //prefix len
     190             :                                       &dpo_type,
     191             :                                       clb_format_srv6_end_m_gtp6_d_di,
     192             :                                       clb_unformat_srv6_end_m_gtp6_d_di,
     193             :                                       clb_creation_srv6_end_m_gtp6_d_di,
     194             :                                       clb_removal_srv6_end_m_gtp6_d_di);
     195         559 :   if (rc < 0)
     196           0 :     clib_error_return (0, "SRv6 Endpoint GTP6.D.DI LocalSID function"
     197             :                        "couldn't be registered");
     198         559 :   return 0;
     199             : }
     200             : 
     201             : /* *INDENT-OFF* */
     202       11759 : VNET_FEATURE_INIT (srv6_end_m_gtp6_d_di, static) =
     203             : {
     204             :   .arc_name = "ip6-unicast",
     205             :   .node_name = "srv6-end-m-gtp6-d-di",
     206             :   .runs_before = 0,
     207             : };
     208             : 
     209        3359 : VLIB_INIT_FUNCTION (srv6_end_m_gtp6_d_di_init);
     210             : /* *INDENT-ON* */
     211             : 
     212             : /*
     213             :  * fd.io coding-style-patch-verification: ON
     214             :  *
     215             :  * Local Variables:
     216             :  * eval: (c-set-style "gnu")
     217             :  * End:
     218             :  */