LCOV - code coverage report
Current view: top level - plugins/srv6-as - as.c (source / functions) Hit Total Coverage
Test: coverage-filtered.info Lines: 189 216 87.5 %
Date: 2023-07-05 22:20:52 Functions: 17 18 94.4 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2015 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : /*
      16             :  *------------------------------------------------------------------
      17             :  * as.c - SRv6 Static Proxy (AS) function
      18             :  *------------------------------------------------------------------
      19             :  */
      20             : 
      21             : #include <vnet/vnet.h>
      22             : #include <vnet/adj/adj.h>
      23             : #include <vnet/plugin/plugin.h>
      24             : #include <vpp/app/version.h>
      25             : #include <srv6-as/as.h>
      26             : 
      27             : #define SID_CREATE_IFACE_FEATURE_ERROR  -1
      28             : #define SID_CREATE_INVALID_IFACE_TYPE   -3
      29             : #define SID_CREATE_INVALID_IFACE_INDEX  -4
      30             : #define SID_CREATE_INVALID_ADJ_INDEX    -5
      31             : 
      32             : unsigned char function_name[] = "SRv6-AS-plugin";
      33             : unsigned char keyword_str[] = "End.AS";
      34             : unsigned char def_str[] =
      35             :   "Endpoint with static proxy to SR-unaware appliance";
      36             : unsigned char params_str[] =
      37             :   "nh <next-hop> oif <iface-out> iif <iface-in> src <src-addr> next <sid> [next <sid> ...]";
      38             : 
      39             : srv6_as_main_t srv6_as_main;
      40             : 
      41             : static inline u8 *
      42           6 : prepare_rewrite (ip6_address_t src_addr, ip6_address_t * sid_list,
      43             :                  u8 protocol)
      44             : {
      45           6 :   u8 *rewrite_str = NULL;
      46           6 :   u32 rewrite_len = IPv6_DEFAULT_HEADER_LENGTH;
      47             : 
      48           6 :   u8 num_sids = vec_len (sid_list);
      49           6 :   u32 sr_hdr_len = 0;
      50             : 
      51           6 :   if (num_sids > 1)
      52             :     {
      53           3 :       sr_hdr_len =
      54           3 :         sizeof (ip6_sr_header_t) + num_sids * sizeof (ip6_address_t);
      55           3 :       rewrite_len += sr_hdr_len;
      56             :     }
      57             : 
      58           6 :   vec_validate (rewrite_str, rewrite_len - 1);
      59             : 
      60             :   /* Fill IP header */
      61           6 :   ip6_header_t *iph = (ip6_header_t *) rewrite_str;
      62           6 :   iph->ip_version_traffic_class_and_flow_label =
      63           6 :     clib_host_to_net_u32 (0 | ((6 & 0xF) << 28));
      64           6 :   iph->src_address = src_addr;
      65           6 :   iph->dst_address = sid_list[0];
      66           6 :   iph->payload_length = sr_hdr_len;
      67           6 :   iph->hop_limit = sr_get_hop_limit ();
      68             : 
      69           6 :   if (num_sids > 1)
      70             :     {
      71             :       /* Set Next Header value to Routing Extension */
      72           3 :       iph->protocol = IP_PROTOCOL_IPV6_ROUTE;
      73             : 
      74             :       /* Fill SR header */
      75           3 :       ip6_sr_header_t *srh = (ip6_sr_header_t *) (iph + 1);
      76           3 :       srh->protocol = protocol;
      77           3 :       srh->length = sr_hdr_len / 8 - 1;
      78           3 :       srh->type = ROUTING_HEADER_TYPE_SR;
      79           3 :       srh->segments_left = num_sids - 1;
      80           3 :       srh->last_entry = num_sids - 1;
      81           3 :       srh->flags = 0x00;
      82           3 :       srh->tag = 0x0000;
      83             : 
      84             :       /* Fill segment list */
      85             :       ip6_address_t *this_address;
      86           3 :       ip6_address_t *addrp = srh->segments + srh->last_entry;
      87           9 :       vec_foreach (this_address, sid_list)
      88             :       {
      89           6 :         *addrp = *this_address;
      90           6 :         addrp--;
      91             :       }
      92             :     }
      93             :   else
      94             :     {
      95             :       /* Set Next Header value to inner protocol */
      96           3 :       iph->protocol = protocol;
      97             :     }
      98             : 
      99           6 :   return rewrite_str;
     100             : }
     101             : 
     102             : static inline void
     103           6 : free_ls_mem (srv6_as_localsid_t * ls_mem)
     104             : {
     105           6 :   vec_free (ls_mem->rewrite);
     106           6 :   vec_free (ls_mem->sid_list);
     107           6 :   clib_mem_free (ls_mem);
     108           6 : }
     109             : 
     110             : 
     111             : /*****************************************/
     112             : /* SRv6 LocalSID instantiation and removal functions */
     113             : static int
     114           6 : srv6_as_localsid_creation_fn (ip6_sr_localsid_t * localsid)
     115             : {
     116           6 :   ip6_sr_main_t *srm = &sr_main;
     117           6 :   srv6_as_main_t *sm = &srv6_as_main;
     118           6 :   srv6_as_localsid_t *ls_mem = localsid->plugin_mem;
     119           6 :   u32 localsid_index = localsid - srm->localsids;
     120             : 
     121             :   /* Step 1: Prepare xconnect adjacency for sending packets to the VNF */
     122             : 
     123             :   /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
     124           6 :   adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
     125           6 :   if (ls_mem->inner_type != AS_TYPE_L2)
     126             :     {
     127           4 :       if (ls_mem->inner_type == AS_TYPE_IP4)
     128           2 :         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4,
     129           2 :                                             VNET_LINK_IP4, &ls_mem->nh_addr,
     130             :                                             ls_mem->sw_if_index_out);
     131           2 :       else if (ls_mem->inner_type == AS_TYPE_IP6)
     132           2 :         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6,
     133           2 :                                             VNET_LINK_IP6, &ls_mem->nh_addr,
     134             :                                             ls_mem->sw_if_index_out);
     135           4 :       if (nh_adj_index == ADJ_INDEX_INVALID)
     136             :         {
     137           0 :           free_ls_mem (ls_mem);
     138           0 :           return SID_CREATE_INVALID_ADJ_INDEX;
     139             :         }
     140             :     }
     141             : 
     142           6 :   ls_mem->nh_adj = nh_adj_index;
     143             : 
     144             : 
     145             :   /* Step 2: Prepare inbound policy for packets returning from the VNF */
     146             : 
     147             :   /* Make sure the provided incoming interface index is valid */
     148           6 :   if (pool_is_free_index (sm->vnet_main->interface_main.sw_interfaces,
     149           6 :                           ls_mem->sw_if_index_in))
     150             :     {
     151           0 :       adj_unlock (ls_mem->nh_adj);
     152           0 :       free_ls_mem (ls_mem);
     153           0 :       return SID_CREATE_INVALID_IFACE_INDEX;
     154             :     }
     155             : 
     156             :   /* Retrieve associated interface structure */
     157           6 :   vnet_sw_interface_t *sw = vnet_get_sw_interface (sm->vnet_main,
     158             :                                                    ls_mem->sw_if_index_in);
     159           6 :   if (sw->type != VNET_SW_INTERFACE_TYPE_HARDWARE)
     160             :     {
     161           0 :       adj_unlock (ls_mem->nh_adj);
     162           0 :       free_ls_mem (ls_mem);
     163           0 :       return SID_CREATE_INVALID_IFACE_TYPE;
     164             :     }
     165             : 
     166           6 :   if (ls_mem->inner_type == AS_TYPE_L2)
     167             :     {
     168             :       /* Enable End.AS2 rewrite node for this interface */
     169             :       int ret =
     170           2 :         vnet_feature_enable_disable ("device-input", "srv6-as2-rewrite",
     171             :                                      ls_mem->sw_if_index_in, 1, 0, 0);
     172           2 :       if (ret != 0)
     173             :         {
     174           0 :           free_ls_mem (ls_mem);
     175           0 :           return SID_CREATE_IFACE_FEATURE_ERROR;
     176             :         }
     177             : 
     178             :       /* Set interface in promiscuous mode */
     179           2 :       vnet_main_t *vnm = vnet_get_main ();
     180             :       vnet_hw_interface_t *hi =
     181           2 :         vnet_get_sup_hw_interface (vnm, ls_mem->sw_if_index_in);
     182             :       /* Make sure it is main interface */
     183           2 :       if (hi->sw_if_index == ls_mem->sw_if_index_in)
     184           2 :         ethernet_set_flags (vnm, hi->hw_if_index,
     185             :                             ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
     186             : 
     187             :       /* Prepare rewrite string */
     188           2 :       ls_mem->rewrite = prepare_rewrite (ls_mem->src_addr, ls_mem->sid_list,
     189             :                                          IP_PROTOCOL_IP6_ETHERNET);
     190             : 
     191             :       /* Associate local SID index to this interface (resize vector if needed) */
     192           2 :       if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid2))
     193             :         {
     194           1 :           vec_resize (sm->sw_iface_localsid2,
     195             :                       (pool_len (sm->vnet_main->interface_main.sw_interfaces)
     196             :                        - vec_len (sm->sw_iface_localsid2)));
     197             :         }
     198           2 :       sm->sw_iface_localsid2[ls_mem->sw_if_index_in] = localsid_index;
     199             :     }
     200           4 :   else if (ls_mem->inner_type == AS_TYPE_IP4)
     201             :     {
     202             :       /* Enable End.AS4 rewrite node for this interface */
     203             :       int ret =
     204           2 :         vnet_feature_enable_disable ("ip4-unicast", "srv6-as4-rewrite",
     205             :                                      ls_mem->sw_if_index_in, 1, 0, 0);
     206           2 :       if (ret != 0)
     207             :         {
     208           0 :           adj_unlock (ls_mem->nh_adj);
     209           0 :           free_ls_mem (ls_mem);
     210           0 :           return SID_CREATE_IFACE_FEATURE_ERROR;
     211             :         }
     212             : 
     213             :       /* Prepare rewrite string */
     214           2 :       ls_mem->rewrite = prepare_rewrite (ls_mem->src_addr, ls_mem->sid_list,
     215             :                                          IP_PROTOCOL_IP_IN_IP);
     216             : 
     217             :       /* Associate local SID index to this interface (resize vector if needed) */
     218           2 :       if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid4))
     219             :         {
     220           1 :           vec_resize (sm->sw_iface_localsid4,
     221             :                       (pool_len (sm->vnet_main->interface_main.sw_interfaces)
     222             :                        - vec_len (sm->sw_iface_localsid4)));
     223             :         }
     224           2 :       sm->sw_iface_localsid4[ls_mem->sw_if_index_in] = localsid_index;
     225             :     }
     226           2 :   else if (ls_mem->inner_type == AS_TYPE_IP6)
     227             :     {
     228             :       /* Enable End.AS6 rewrite node for this interface */
     229             :       int ret =
     230           2 :         vnet_feature_enable_disable ("ip6-unicast", "srv6-as6-rewrite",
     231             :                                      ls_mem->sw_if_index_in, 1, 0, 0);
     232           2 :       if (ret != 0)
     233             :         {
     234           0 :           adj_unlock (ls_mem->nh_adj);
     235           0 :           free_ls_mem (ls_mem);
     236           0 :           return SID_CREATE_IFACE_FEATURE_ERROR;
     237             :         }
     238             : 
     239             :       /* Prepare rewrite string */
     240           2 :       ls_mem->rewrite = prepare_rewrite (ls_mem->src_addr, ls_mem->sid_list,
     241             :                                          IP_PROTOCOL_IPV6);
     242             : 
     243             :       /* Associate local SID index to this interface (resize vector if needed) */
     244           2 :       if (ls_mem->sw_if_index_in >= vec_len (sm->sw_iface_localsid6))
     245             :         {
     246           1 :           vec_resize (sm->sw_iface_localsid6,
     247             :                       (pool_len (sm->vnet_main->interface_main.sw_interfaces)
     248             :                        - vec_len (sm->sw_iface_localsid6)));
     249             :         }
     250           2 :       sm->sw_iface_localsid6[ls_mem->sw_if_index_in] = localsid_index;
     251             :     }
     252             : 
     253             :   /* Step 3: Initialize rewrite counters */
     254             :   srv6_as_localsid_t **ls_p;
     255           6 :   pool_get (sm->sids, ls_p);
     256           6 :   *ls_p = ls_mem;
     257           6 :   ls_mem->index = ls_p - sm->sids;
     258             : 
     259           6 :   vlib_validate_combined_counter (&(sm->valid_counters), ls_mem->index);
     260           6 :   vlib_validate_combined_counter (&(sm->invalid_counters), ls_mem->index);
     261             : 
     262           6 :   vlib_zero_combined_counter (&(sm->valid_counters), ls_mem->index);
     263           6 :   vlib_zero_combined_counter (&(sm->invalid_counters), ls_mem->index);
     264             : 
     265           6 :   return 0;
     266             : }
     267             : 
     268             : static int
     269           6 : srv6_as_localsid_removal_fn (ip6_sr_localsid_t * localsid)
     270             : {
     271           6 :   srv6_as_main_t *sm = &srv6_as_main;
     272           6 :   srv6_as_localsid_t *ls_mem = localsid->plugin_mem;
     273             : 
     274           6 :   if (ls_mem->inner_type == AS_TYPE_L2)
     275             :     {
     276             :       /* Disable End.AS2 rewrite node for this interface */
     277             :       int ret;
     278           2 :       ret = vnet_feature_enable_disable ("device-input", "srv6-as2-rewrite",
     279             :                                          ls_mem->sw_if_index_in, 0, 0, 0);
     280           2 :       if (ret != 0)
     281           0 :         return -1;
     282             : 
     283             :       /* Disable promiscuous mode on the interface */
     284           2 :       vnet_main_t *vnm = vnet_get_main ();
     285             :       vnet_hw_interface_t *hi =
     286           2 :         vnet_get_sup_hw_interface (vnm, ls_mem->sw_if_index_in);
     287             :       /* Make sure it is main interface */
     288           2 :       if (hi->sw_if_index == ls_mem->sw_if_index_in)
     289           2 :         ethernet_set_flags (vnm, hi->hw_if_index, 0);
     290             : 
     291             :       /* Remove local SID index from interface table */
     292           2 :       sm->sw_iface_localsid2[ls_mem->sw_if_index_in] = ~(u32) 0;
     293             :     }
     294           4 :   else if (ls_mem->inner_type == AS_TYPE_IP4)
     295             :     {
     296             :       /* Disable End.AS4 rewrite node for this interface */
     297             :       int ret;
     298           2 :       ret = vnet_feature_enable_disable ("ip4-unicast", "srv6-as4-rewrite",
     299             :                                          ls_mem->sw_if_index_in, 0, 0, 0);
     300           2 :       if (ret != 0)
     301           0 :         return -1;
     302             : 
     303             :       /* Remove local SID index from interface table */
     304           2 :       sm->sw_iface_localsid4[ls_mem->sw_if_index_in] = ~(u32) 0;
     305             :     }
     306           2 :   else if (ls_mem->inner_type == AS_TYPE_IP6)
     307             :     {
     308             :       /* Disable End.AS6 rewrite node for this interface */
     309             :       int ret;
     310           2 :       ret = vnet_feature_enable_disable ("ip6-unicast", "srv6-as6-rewrite",
     311             :                                          ls_mem->sw_if_index_in, 0, 0, 0);
     312           2 :       if (ret != 0)
     313           0 :         return -1;
     314             : 
     315             :       /* Remove local SID index from interface table */
     316           2 :       sm->sw_iface_localsid6[ls_mem->sw_if_index_in] = ~(u32) 0;
     317             :     }
     318             : 
     319             : 
     320             :   /* Unlock (OIF, NHOP) adjacency (from sr_localsid.c:103) */
     321           6 :   adj_unlock (ls_mem->nh_adj);
     322             : 
     323             :   /* Delete SID entry */
     324           6 :   pool_put (sm->sids, pool_elt_at_index (sm->sids, ls_mem->index));
     325             : 
     326             :   /* Clean up local SID memory */
     327           6 :   free_ls_mem (ls_mem);
     328             : 
     329           6 :   return 0;
     330             : }
     331             : 
     332             : /**********************************/
     333             : /* SRv6 LocalSID format functions */
     334             : /*
     335             :  * Prints nicely the parameters of a localsid
     336             :  * Example: print "Table 5"
     337             :  */
     338             : u8 *
     339          18 : format_srv6_as_localsid (u8 * s, va_list * args)
     340             : {
     341          18 :   srv6_as_localsid_t *ls_mem = va_arg (*args, void *);
     342             : 
     343          18 :   vnet_main_t *vnm = vnet_get_main ();
     344          18 :   srv6_as_main_t *sm = &srv6_as_main;
     345             : 
     346          18 :   if (ls_mem->inner_type == AS_TYPE_IP4)
     347             :     {
     348             :       s =
     349           6 :         format (s, "Next-hop:\t%U\n\t", format_ip4_address,
     350             :                 &ls_mem->nh_addr.ip4);
     351             :     }
     352          12 :   else if (ls_mem->inner_type == AS_TYPE_IP6)
     353             :     {
     354             :       s =
     355           6 :         format (s, "Next-hop:\t%U\n\t", format_ip6_address,
     356             :                 &ls_mem->nh_addr.ip6);
     357             :     }
     358             : 
     359          18 :   s = format (s, "Outgoing iface:\t%U\n", format_vnet_sw_if_index_name, vnm,
     360             :               ls_mem->sw_if_index_out);
     361          18 :   s = format (s, "\tIncoming iface:\t%U\n", format_vnet_sw_if_index_name, vnm,
     362             :               ls_mem->sw_if_index_in);
     363          18 :   s = format (s, "\tSource address:\t%U\n", format_ip6_address,
     364             :               &ls_mem->src_addr);
     365             : 
     366          18 :   s = format (s, "\tSegment list:\t< ");
     367             :   ip6_address_t *addr;
     368          45 :   vec_foreach (addr, ls_mem->sid_list)
     369             :   {
     370          27 :     s = format (s, "%U, ", format_ip6_address, addr);
     371             :   }
     372          18 :   s = format (s, "\b\b >\n");
     373             : 
     374             :   vlib_counter_t valid, invalid;
     375          18 :   vlib_get_combined_counter (&(sm->valid_counters), ls_mem->index, &valid);
     376          18 :   vlib_get_combined_counter (&(sm->invalid_counters), ls_mem->index,
     377             :                              &invalid);
     378             :   s =
     379          18 :     format (s, "\tGood rewrite traffic: \t[%Ld packets : %Ld bytes]\n",
     380             :             valid.packets, valid.bytes);
     381             :   s =
     382          18 :     format (s, "\tBad rewrite traffic:  \t[%Ld packets : %Ld bytes]\n",
     383             :             invalid.packets, invalid.bytes);
     384             : 
     385          18 :   return s;
     386             : }
     387             : 
     388             : /*
     389             :  * Process the parameters of a localsid
     390             :  * Example: process from:
     391             :  * sr localsid address cafe::1 behavior new_srv6_localsid 5
     392             :  * everything from behavior on... so in this case 'new_srv6_localsid 5'
     393             :  * Notice that it MUST match the keyword_str and params_str defined above.
     394             :  */
     395             : uword
     396           9 : unformat_srv6_as_localsid (unformat_input_t * input, va_list * args)
     397             : {
     398           9 :   void **plugin_mem_p = va_arg (*args, void **);
     399             :   srv6_as_localsid_t *ls_mem;
     400             : 
     401           9 :   vnet_main_t *vnm = vnet_get_main ();
     402             : 
     403           9 :   u8 inner_type = AS_TYPE_L2;
     404             :   ip46_address_t nh_addr;
     405             :   u32 sw_if_index_out;
     406             :   u32 sw_if_index_in;
     407             :   ip6_address_t src_addr;
     408             :   ip6_address_t next_sid;
     409           9 :   ip6_address_t *sid_list = NULL;
     410             : 
     411           9 :   u8 params = 0;
     412             : #define PARAM_AS_NH   (1 << 0)
     413             : #define PARAM_AS_OIF  (1 << 1)
     414             : #define PARAM_AS_IIF  (1 << 2)
     415             : #define PARAM_AS_SRC  (1 << 3)
     416             : 
     417           9 :   if (!unformat (input, "end.as"))
     418           3 :     return 0;
     419             : 
     420          35 :   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     421             :     {
     422          29 :       if (!(params & PARAM_AS_NH) && unformat (input, "nh %U",
     423             :                                                unformat_ip4_address,
     424             :                                                &nh_addr.ip4))
     425             :         {
     426           2 :           inner_type = AS_TYPE_IP4;
     427           2 :           params |= PARAM_AS_NH;
     428             :         }
     429          29 :       if (!(params & PARAM_AS_NH) && unformat (input, "nh %U",
     430             :                                                unformat_ip6_address,
     431             :                                                &nh_addr.ip6))
     432             :         {
     433           2 :           inner_type = AS_TYPE_IP6;
     434           2 :           params |= PARAM_AS_NH;
     435             :         }
     436          27 :       else if (!(params & PARAM_AS_OIF) && unformat (input, "oif %U",
     437             :                                                      unformat_vnet_sw_interface,
     438             :                                                      vnm, &sw_if_index_out))
     439             :         {
     440           6 :           params |= PARAM_AS_OIF;
     441             :         }
     442          21 :       else if (!(params & PARAM_AS_IIF) && unformat (input, "iif %U",
     443             :                                                      unformat_vnet_sw_interface,
     444             :                                                      vnm, &sw_if_index_in))
     445             :         {
     446           6 :           params |= PARAM_AS_IIF;
     447             :         }
     448          15 :       else if (!(params & PARAM_AS_SRC) && unformat (input, "src %U",
     449             :                                                      unformat_ip6_address,
     450             :                                                      &src_addr))
     451             :         {
     452           6 :           params |= PARAM_AS_SRC;
     453             :         }
     454           9 :       else if (unformat (input, "next %U", unformat_ip6_address, &next_sid))
     455             :         {
     456           9 :           vec_add1 (sid_list, next_sid);
     457             :         }
     458             :       else
     459             :         {
     460           0 :           break;
     461             :         }
     462             :     }
     463             : 
     464             :   /* Make sure that all parameters are supplied */
     465           6 :   u8 params_chk = (PARAM_AS_OIF | PARAM_AS_IIF | PARAM_AS_SRC);
     466           6 :   if ((params & params_chk) != params_chk || sid_list == NULL)
     467             :     {
     468           0 :       vec_free (sid_list);
     469           0 :       return 0;
     470             :     }
     471             : 
     472             :   /* Allocate and initialize memory block for local SID parameters */
     473           6 :   ls_mem = clib_mem_alloc (sizeof *ls_mem);
     474           6 :   clib_memset (ls_mem, 0, sizeof *ls_mem);
     475           6 :   *plugin_mem_p = ls_mem;
     476             : 
     477             :   /* Set local SID parameters */
     478           6 :   ls_mem->inner_type = inner_type;
     479           6 :   if (inner_type == AS_TYPE_IP4)
     480           2 :     ls_mem->nh_addr.ip4 = nh_addr.ip4;
     481           4 :   else if (inner_type == AS_TYPE_IP6)
     482           2 :     ls_mem->nh_addr.ip6 = nh_addr.ip6;
     483           6 :   ls_mem->sw_if_index_out = sw_if_index_out;
     484           6 :   ls_mem->sw_if_index_in = sw_if_index_in;
     485           6 :   ls_mem->src_addr = src_addr;
     486           6 :   ls_mem->sid_list = sid_list;
     487             : 
     488           6 :   return 1;
     489             : }
     490             : 
     491             : /*************************/
     492             : /* SRv6 LocalSID FIB DPO */
     493             : static u8 *
     494           0 : format_srv6_as_dpo (u8 * s, va_list * args)
     495             : {
     496           0 :   index_t index = va_arg (*args, index_t);
     497           0 :   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
     498             : 
     499           0 :   return (format (s, "SR: static_proxy_index:[%u]", index));
     500             : }
     501             : 
     502             : void
     503          36 : srv6_as_dpo_lock (dpo_id_t * dpo)
     504             : {
     505          36 : }
     506             : 
     507             : void
     508          36 : srv6_as_dpo_unlock (dpo_id_t * dpo)
     509             : {
     510          36 : }
     511             : 
     512             : const static dpo_vft_t srv6_as_vft = {
     513             :   .dv_lock = srv6_as_dpo_lock,
     514             :   .dv_unlock = srv6_as_dpo_unlock,
     515             :   .dv_format = format_srv6_as_dpo,
     516             : };
     517             : 
     518             : const static char *const srv6_as_ip6_nodes[] = {
     519             :   "srv6-as-localsid",
     520             :   NULL,
     521             : };
     522             : 
     523             : const static char *const *const srv6_as_nodes[DPO_PROTO_NUM] = {
     524             :   [DPO_PROTO_IP6] = srv6_as_ip6_nodes,
     525             : };
     526             : 
     527             : /**********************/
     528             : static clib_error_t *
     529         559 : srv6_as_init (vlib_main_t * vm)
     530             : {
     531         559 :   srv6_as_main_t *sm = &srv6_as_main;
     532         559 :   int rv = 0;
     533             : 
     534         559 :   sm->vlib_main = vm;
     535         559 :   sm->vnet_main = vnet_get_main ();
     536             : 
     537             :   /* Create DPO */
     538         559 :   sm->srv6_as_dpo_type = dpo_register_new_type (&srv6_as_vft, srv6_as_nodes);
     539             : 
     540             :   /* Register SRv6 LocalSID */
     541         559 :   rv = sr_localsid_register_function (vm,
     542             :                                       function_name,
     543             :                                       keyword_str,
     544             :                                       def_str,
     545             :                                       params_str,
     546             :                                       128,
     547             :                                       &sm->srv6_as_dpo_type,
     548             :                                       format_srv6_as_localsid,
     549             :                                       unformat_srv6_as_localsid,
     550             :                                       srv6_as_localsid_creation_fn,
     551             :                                       srv6_as_localsid_removal_fn);
     552         559 :   if (rv < 0)
     553           0 :     clib_error_return (0, "SRv6 LocalSID function could not be registered.");
     554             :   else
     555         559 :     sm->srv6_localsid_behavior_id = rv;
     556             : 
     557         559 :   return 0;
     558             : }
     559             : 
     560             : /* *INDENT-OFF* */
     561       15679 : VNET_FEATURE_INIT (srv6_as2_rewrite, static) =
     562             : {
     563             :   .arc_name = "device-input",
     564             :   .node_name = "srv6-as2-rewrite",
     565             :   .runs_before = VNET_FEATURES ("ethernet-input"),
     566             : };
     567             : 
     568       15679 : VNET_FEATURE_INIT (srv6_as4_rewrite, static) =
     569             : {
     570             :   .arc_name = "ip4-unicast",
     571             :   .node_name = "srv6-as4-rewrite",
     572             :   .runs_before = 0,
     573             : };
     574             : 
     575       15679 : VNET_FEATURE_INIT (srv6_as6_rewrite, static) =
     576             : {
     577             :   .arc_name = "ip6-unicast",
     578             :   .node_name = "srv6-as6-rewrite",
     579             :   .runs_before = 0,
     580             : };
     581             : 
     582        1119 : VLIB_INIT_FUNCTION (srv6_as_init);
     583             : 
     584             : VLIB_PLUGIN_REGISTER () = {
     585             :   .version = VPP_BUILD_VER,
     586             :   .description = "Static Segment Routing for IPv6 (SRv6) Proxy",
     587             : };
     588             : /* *INDENT-ON* */
     589             : 
     590             : /*
     591             : * fd.io coding-style-patch-verification: ON
     592             : *
     593             : * Local Variables:
     594             : * eval: (c-set-style "gnu")
     595             : * End:
     596             : */

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