src/vnet/srv6/sr_localsid.c

   1 /*
   2  * sr_localsid.c: ipv6 segment routing Endpoint behaviors
   3  *
   4  * Copyright (c) 2016 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 /**
  19  * @file
  20  * @brief Processing of packets with a SRH
  21  *
  22  * CLI to define new Segment Routing End processing functions.
  23  * Graph node to support such functions.
  24  *
  25  * Each function associates an SRv6 segment (IPv6 address) with an specific
  26  * Segment Routing function.
  27  *
  28  */
  29
  30 #include <vlib/vlib.h>
  31 #include <vnet/vnet.h>
  32 #include <vnet/srv6/sr.h>
  33 #include <vnet/ip/ip.h>
  34 #include <vnet/srv6/sr_packet.h>
  35 #include <vnet/ip/ip6_packet.h>
  36 #include <vnet/fib/ip6_fib.h>
  37 #include <vnet/dpo/dpo.h>
  38 #include <vnet/adj/adj.h>
  39
  40 #include <vppinfra/error.h>
  41 #include <vppinfra/elog.h>
  42
  43 /**
  44  * @brief Dynamically added SR localsid DPO type
  45  */
  46 static dpo_type_t sr_localsid_dpo_type;
  47 static dpo_type_t sr_localsid_d_dpo_type;
  48
  49 /**
  50  * @brief SR localsid add/del
  51  *
  52  * Function to add or delete SR LocalSIDs.
  53  *
  54  * @param is_del Boolean of whether its a delete instruction
  55  * @param localsid_addr IPv6 address of the localsid
  56  * @param is_decap Boolean of whether decapsulation is allowed in this function
  57  * @param behavior Type of behavior (function) for this localsid
  58  * @param sw_if_index Only for L2/L3 xconnect. OIF. In VRF variant the fib_table.
  59  * @param vlan_index Only for L2 xconnect. Outgoing VLAN tag.
  60  * @param fib_table  FIB table in which we should install the localsid entry
  61  * @param nh_addr Next Hop IPv4/IPv6 address. Only for L2/L3 xconnect.
  62  *
  63  * @return 0 on success, error otherwise.
  64  */
  65 int
  66 sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
  67                  char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index,
  68                  u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem)
  69 {
  70   ip6_sr_main_t *sm = &sr_main;
  71   uword *p;
  72   int rv;
  73
  74   ip6_sr_localsid_t *ls = 0;
  75
  76   dpo_id_t dpo = DPO_INVALID;
  77
  78   /* Search for the item */
  79   p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
  80
  81   if (p)
  82     {
  83       if (is_del)
  84         {
  85           /* Retrieve localsid */
  86           ls = pool_elt_at_index (sm->localsids, p[0]);
  87           /* Delete FIB entry */
  88           fib_prefix_t pfx = {
  89             .fp_proto = FIB_PROTOCOL_IP6,
  90             .fp_len = 128,
  91             .fp_addr = {
  92                         .ip6 = *localsid_addr,
  93                         }
  94           };
  95
  96           fib_table_entry_delete (fib_table_find (FIB_PROTOCOL_IP6,
  97                                                   fib_table),
  98                                   &pfx, FIB_SOURCE_SR);
  99
 100           /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
 101           if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
 102               || ls->behavior == SR_BEHAVIOR_DX4)
 103             adj_unlock (ls->nh_adj);
 104
 105           if (ls->behavior >= SR_BEHAVIOR_LAST)
 106             {
 107               sr_localsid_fn_registration_t *plugin = 0;
 108               plugin = pool_elt_at_index (sm->plugin_functions,
 109                                           ls->behavior - SR_BEHAVIOR_LAST);
 110
 111               /* Callback plugin removal function */
 112               rv = plugin->removal (ls);
 113             }
 114
 115           /* Delete localsid registry */
 116           pool_put (sm->localsids, ls);
 117           mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
 118           return 0;
 119         }
 120       else                      /* create with function already existing; complain */
 121         return -1;
 122     }
 123   else
 124     /* delete; localsid does not exist; complain */
 125   if (is_del)
 126     return -2;
 127
 128   /* Check whether there exists a FIB entry with such address */
 129   fib_prefix_t pfx = {
 130     .fp_proto = FIB_PROTOCOL_IP6,
 131     .fp_len = 128,
 132   };
 133
 134   pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
 135   pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
 136
 137   /* Lookup the FIB index associated to the table id provided */
 138   u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
 139   if (fib_index == ~0)
 140     return -3;
 141
 142   /* Lookup the localsid in such FIB table */
 143   fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
 144   if (FIB_NODE_INDEX_INVALID != fei)
 145     return -4;                  //There is an entry for such address (the localsid addr)
 146
 147   /* Create a new localsid registry */
 148   pool_get (sm->localsids, ls);
 149   memset (ls, 0, sizeof (*ls));
 150
 151   clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
 152   ls->end_psp = end_psp;
 153   ls->behavior = behavior;
 154   ls->nh_adj = (u32) ~ 0;
 155   ls->fib_table = fib_table;
 156   switch (behavior)
 157     {
 158     case SR_BEHAVIOR_END:
 159       break;
 160     case SR_BEHAVIOR_X:
 161       ls->sw_if_index = sw_if_index;
 162       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 163       break;
 164     case SR_BEHAVIOR_T:
 165       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 166       break;
 167     case SR_BEHAVIOR_DX4:
 168       ls->sw_if_index = sw_if_index;
 169       clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
 170       break;
 171     case SR_BEHAVIOR_DX6:
 172       ls->sw_if_index = sw_if_index;
 173       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 174       break;
 175     case SR_BEHAVIOR_DT6:
 176       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 177       break;
 178     case SR_BEHAVIOR_DT4:
 179       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP4, sw_if_index);
 180       break;
 181     case SR_BEHAVIOR_DX2:
 182       ls->sw_if_index = sw_if_index;
 183       ls->vlan_index = vlan_index;
 184       break;
 185     }
 186
 187   /* Figure out the adjacency magic for Xconnect variants */
 188   if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
 189       || ls->behavior == SR_BEHAVIOR_DX6)
 190     {
 191       adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
 192
 193       /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
 194       if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
 195         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
 196                                             nh_addr, sw_if_index);
 197
 198       else if (ls->behavior == SR_BEHAVIOR_DX4)
 199         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
 200                                             nh_addr, sw_if_index);
 201
 202       /* Check for ADJ creation error. If so panic */
 203       if (nh_adj_index == ADJ_INDEX_INVALID)
 204         {
 205           pool_put (sm->localsids, ls);
 206           return -5;
 207         }
 208
 209       ls->nh_adj = nh_adj_index;
 210     }
 211
 212   /* Set DPO */
 213   if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X)
 214     dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 215   else if (ls->behavior > SR_BEHAVIOR_D_FIRST
 216            && ls->behavior < SR_BEHAVIOR_LAST)
 217     dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 218   else if (ls->behavior >= SR_BEHAVIOR_LAST)
 219     {
 220       sr_localsid_fn_registration_t *plugin = 0;
 221       plugin = pool_elt_at_index (sm->plugin_functions,
 222                                   ls->behavior - SR_BEHAVIOR_LAST);
 223       /* Copy the unformat memory result */
 224       ls->plugin_mem = ls_plugin_mem;
 225       /* Callback plugin creation function */
 226       rv = plugin->creation (ls);
 227       if (rv)
 228         {
 229           pool_put (sm->localsids, ls);
 230           return -6;
 231         }
 232       dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
 233     }
 234
 235   /* Set hash key for searching localsid by address */
 236   mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
 237              NULL);
 238
 239   fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
 240                                    FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
 241   dpo_reset (&dpo);
 242
 243   /* Set counter to zero */
 244   vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
 245                                   ls - sm->localsids);
 246   vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
 247                                   ls - sm->localsids);
 248
 249   vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
 250                               ls - sm->localsids);
 251   vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
 252                               ls - sm->localsids);
 253
 254   return 0;
 255 }
 256
 257 /**
 258  * @brief SR LocalSID CLI function.
 259  *
 260  * @see sr_cli_localsid
 261  */
 262 static clib_error_t *
 263 sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 264                             vlib_cli_command_t * cmd)
 265 {
 266   vnet_main_t *vnm = vnet_get_main ();
 267   ip6_sr_main_t *sm = &sr_main;
 268   u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
 269   int is_del = 0;
 270   int end_psp = 0;
 271   ip6_address_t resulting_address;
 272   ip46_address_t next_hop;
 273   char address_set = 0;
 274   char behavior = 0;
 275   void *ls_plugin_mem = 0;
 276
 277   int rv;
 278
 279   memset (&resulting_address, 0, sizeof (ip6_address_t));
 280   ip46_address_reset (&next_hop);
 281
 282   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 283     {
 284       if (unformat (input, "del"))
 285         is_del = 1;
 286       else if (!address_set
 287                && unformat (input, "address %U", unformat_ip6_address,
 288                             &resulting_address))
 289         address_set = 1;
 290       else if (!address_set
 291                && unformat (input, "addr %U", unformat_ip6_address,
 292                             &resulting_address))
 293         address_set = 1;
 294       else if (unformat (input, "fib-table %u", &fib_index));
 295       else if (vlan_index == (u32) ~ 0
 296                && unformat (input, "vlan %u", &vlan_index));
 297       else if (!behavior && unformat (input, "behavior"))
 298         {
 299           if (unformat (input, "end.x %U %U",
 300                         unformat_vnet_sw_interface, vnm, &sw_if_index,
 301                         unformat_ip6_address, &next_hop.ip6))
 302             behavior = SR_BEHAVIOR_X;
 303           else if (unformat (input, "end.t %u", &sw_if_index))
 304             behavior = SR_BEHAVIOR_T;
 305           else if (unformat (input, "end.dx6 %U %U",
 306                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 307                              unformat_ip6_address, &next_hop.ip6))
 308             behavior = SR_BEHAVIOR_DX6;
 309           else if (unformat (input, "end.dx4 %U %U",
 310                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 311                              unformat_ip4_address, &next_hop.ip4))
 312             behavior = SR_BEHAVIOR_DX4;
 313           else if (unformat (input, "end.dx2 %U",
 314                              unformat_vnet_sw_interface, vnm, &sw_if_index))
 315             behavior = SR_BEHAVIOR_DX2;
 316           else if (unformat (input, "end.dt6 %u", &sw_if_index))
 317             behavior = SR_BEHAVIOR_DT6;
 318           else if (unformat (input, "end.dt4 %u", &sw_if_index))
 319             behavior = SR_BEHAVIOR_DT4;
 320           else
 321             {
 322               /* Loop over all the plugin behavior format functions */
 323               sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
 324               sr_localsid_fn_registration_t **plugin_it = 0;
 325
 326               /* Create a vector out of the plugin pool as recommended */
 327         /* *INDENT-OFF* */
 328         pool_foreach (plugin, sm->plugin_functions,
 329         {
 330           vec_add1 (vec_plugins, plugin);
 331         });
 332         /* *INDENT-ON* */
 333
 334               vec_foreach (plugin_it, vec_plugins)
 335               {
 336                 if (unformat
 337                     (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
 338                   {
 339                     behavior = (*plugin_it)->sr_localsid_function_number;
 340                     break;
 341                   }
 342               }
 343             }
 344
 345           if (!behavior)
 346             {
 347               if (unformat (input, "end"))
 348                 behavior = SR_BEHAVIOR_END;
 349               else
 350                 break;
 351             }
 352         }
 353       else if (!end_psp && unformat (input, "psp"))
 354         end_psp = 1;
 355       else
 356         break;
 357     }
 358
 359   if (!behavior && end_psp)
 360     behavior = SR_BEHAVIOR_END;
 361
 362   if (!address_set)
 363     return clib_error_return (0,
 364                               "Error: SRv6 LocalSID address is mandatory.");
 365   if (!is_del && !behavior)
 366     return clib_error_return (0,
 367                               "Error: SRv6 LocalSID behavior is mandatory.");
 368   if (vlan_index != (u32) ~ 0)
 369     return clib_error_return (0,
 370                               "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
 371   if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
 372     return clib_error_return (0,
 373                               "Error: SRv6 PSP only compatible with End and End.X");
 374
 375   rv = sr_cli_localsid (is_del, &resulting_address, end_psp, behavior,
 376                         sw_if_index, vlan_index, fib_index, &next_hop,
 377                         ls_plugin_mem);
 378
 379   switch (rv)
 380     {
 381     case 0:
 382       break;
 383     case 1:
 384       return 0;
 385     case -1:
 386       return clib_error_return (0,
 387                                 "Identical localsid already exists. Requested localsid not created.");
 388     case -2:
 389       return clib_error_return (0,
 390                                 "The requested localsid could not be deleted. SR localsid not found");
 391     case -3:
 392       return clib_error_return (0, "FIB table %u does not exist", fib_index);
 393     case -4:
 394       return clib_error_return (0, "There is already one FIB entry for the"
 395                                 "requested localsid non segment routing related");
 396     case -5:
 397       return clib_error_return (0,
 398                                 "Could not create ARP/ND entry for such next_hop. Internal error.");
 399     case -6:
 400       return clib_error_return (0,
 401                                 "Error on the plugin based localsid creation.");
 402     default:
 403       return clib_error_return (0, "BUG: sr localsid returns %d", rv);
 404     }
 405   return 0;
 406 }
 407
 408 /* *INDENT-OFF* */
 409 VLIB_CLI_COMMAND (sr_localsid_command, static) = {
 410   .path = "sr localsid",
 411   .short_help = "sr localsid (del) address XX:XX::YY:YY"
 412       "(fib-table 8) behavior STRING",
 413   .long_help =
 414     "Create SR LocalSID and binds it to a particular behavior\n"
 415     "Arguments:\n"
 416     "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
 417     "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
 418     "\tbehavior STRING            Specifies the behavior\n"
 419     "\n\tBehaviors:\n"
 420     "\tEnd\t-> Endpoint.\n"
 421     "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
 422     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 423     "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
 424     "\t\tParameters: '<iface>'\n"
 425     "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
 426     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 427     "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
 428     "\t\tParameters: '<iface> <ip4_next_hop>'\n"
 429     "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
 430     "\t\tParameters: '<ip6_fib_table>'\n"
 431     "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
 432     "\t\tParameters: '<ip4_fib_table>'\n",
 433   .function = sr_cli_localsid_command_fn,
 434 };
 435 /* *INDENT-ON* */
 436
 437 /**
 438  * @brief CLI function to 'show' all SR LocalSIDs on console.
 439  */
 440 static clib_error_t *
 441 show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 442                              vlib_cli_command_t * cmd)
 443 {
 444   vnet_main_t *vnm = vnet_get_main ();
 445   ip6_sr_main_t *sm = &sr_main;
 446   ip6_sr_localsid_t **localsid_list = 0;
 447   ip6_sr_localsid_t *ls;
 448   int i;
 449
 450   vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
 451   vlib_cli_output (vm, "=========================");
 452   /* *INDENT-OFF* */
 453   pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
 454   /* *INDENT-ON* */
 455   for (i = 0; i < vec_len (localsid_list); i++)
 456     {
 457       ls = localsid_list[i];
 458       switch (ls->behavior)
 459         {
 460         case SR_BEHAVIOR_END:
 461           vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd",
 462                            format_ip6_address, &ls->localsid);
 463           break;
 464         case SR_BEHAVIOR_X:
 465           vlib_cli_output (vm,
 466                            "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
 467                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 468                            format_ip6_address, &ls->localsid,
 469                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 470                            format_ip6_address, &ls->next_hop.ip6);
 471           break;
 472         case SR_BEHAVIOR_T:
 473           vlib_cli_output (vm,
 474                            "\tAddress: \t%U\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
 475                            "\n\tTable:  \t%u",
 476                            format_ip6_address, &ls->localsid,
 477                            format_vnet_sw_if_index_name, vnm, ls->vrf_index);
 478           break;
 479         case SR_BEHAVIOR_DX4:
 480           vlib_cli_output (vm,
 481                            "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
 482                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 483                            format_ip6_address, &ls->localsid,
 484                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 485                            format_ip4_address, &ls->next_hop.ip4);
 486           break;
 487         case SR_BEHAVIOR_DX6:
 488           vlib_cli_output (vm,
 489                            "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
 490                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 491                            format_ip6_address, &ls->localsid,
 492                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 493                            format_ip6_address, &ls->next_hop.ip6);
 494           break;
 495         case SR_BEHAVIOR_DX2:
 496           if (ls->vlan_index == (u32) ~ 0)
 497             vlib_cli_output (vm,
 498                              "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
 499                              "\n\tIface:  \t%U", format_ip6_address,
 500                              &ls->localsid, format_vnet_sw_if_index_name, vnm,
 501                              ls->sw_if_index);
 502           else
 503             vlib_cli_output (vm,
 504                              "Unsupported yet. (DX2 with egress VLAN rewrite)");
 505           break;
 506         case SR_BEHAVIOR_DT6:
 507           vlib_cli_output (vm,
 508                            "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
 509                            "\n\tTable: %u", format_ip6_address, &ls->localsid,
 510                            ls->vrf_index);
 511           break;
 512         case SR_BEHAVIOR_DT4:
 513           vlib_cli_output (vm,
 514                            "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
 515                            "\n\tTable: \t%u", format_ip6_address,
 516                            &ls->localsid, ls->vrf_index);
 517           break;
 518         default:
 519           if (ls->behavior >= SR_BEHAVIOR_LAST)
 520             {
 521               sr_localsid_fn_registration_t *plugin =
 522                 pool_elt_at_index (sm->plugin_functions,
 523                                    ls->behavior - SR_BEHAVIOR_LAST);
 524
 525               vlib_cli_output (vm, "\tAddress: \t%U\n"
 526                                "\tBehavior: \t%s (%s)\n\t%U",
 527                                format_ip6_address, &ls->localsid,
 528                                plugin->keyword_str, plugin->def_str,
 529                                plugin->ls_format, ls->plugin_mem);
 530             }
 531           else
 532             //Should never get here...
 533             vlib_cli_output (vm, "Internal error");
 534           break;
 535         }
 536       if (ls->end_psp)
 537         vlib_cli_output (vm, "\tPSP: \tTrue\n");
 538
 539       /* Print counters */
 540       vlib_counter_t valid, invalid;
 541       vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
 542       vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
 543       vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
 544                        valid.packets, valid.bytes);
 545       vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
 546                        invalid.packets, invalid.bytes);
 547       vlib_cli_output (vm, "--------------------");
 548     }
 549   return 0;
 550 }
 551
 552 /* *INDENT-OFF* */
 553 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
 554   .path = "show sr localsids",
 555   .short_help = "show sr localsids",
 556   .function = show_sr_localsid_command_fn,
 557 };
 558 /* *INDENT-ON* */
 559
 560 /**
 561  * @brief Function to 'clear' ALL SR localsid counters
 562  */
 563 static clib_error_t *
 564 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
 565                                        unformat_input_t * input,
 566                                        vlib_cli_command_t * cmd)
 567 {
 568   ip6_sr_main_t *sm = &sr_main;
 569
 570   vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
 571   vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
 572
 573   return 0;
 574 }
 575
 576 /* *INDENT-OFF* */
 577 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
 578   .path = "clear sr localsid-counters",
 579   .short_help = "clear sr localsid-counters",
 580   .function = clear_sr_localsid_counters_command_fn,
 581 };
 582 /* *INDENT-ON* */
 583
 584 /************************ SR LocalSID graphs node ****************************/
 585 /**
 586  * @brief SR localsid node trace
 587  */
 588 typedef struct
 589 {
 590   ip6_address_t localsid;
 591   u16 behavior;
 592   u8 sr[256];
 593   u8 num_segments;
 594   u8 segments_left;
 595 } sr_localsid_trace_t;
 596
 597 #define foreach_sr_localsid_error                                   \
 598 _(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
 599 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
 600 _(NO_SRH, "(SR-Error) No SR header")                                \
 601 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
 602 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
 603 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
 604
 605 typedef enum
 606 {
 607 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
 608   foreach_sr_localsid_error
 609 #undef _
 610     SR_LOCALSID_N_ERROR,
 611 } sr_localsid_error_t;
 612
 613 static char *sr_localsid_error_strings[] = {
 614 #define _(sym,string) string,
 615   foreach_sr_localsid_error
 616 #undef _
 617 };
 618
 619 #define foreach_sr_localsid_next        \
 620 _(ERROR, "error-drop")                  \
 621 _(IP6_LOOKUP, "ip6-lookup")             \
 622 _(IP4_LOOKUP, "ip4-lookup")             \
 623 _(IP6_REWRITE, "ip6-rewrite")           \
 624 _(IP4_REWRITE, "ip4-rewrite")           \
 625 _(INTERFACE_OUTPUT, "interface-output")
 626
 627 typedef enum
 628 {
 629 #define _(s,n) SR_LOCALSID_NEXT_##s,
 630   foreach_sr_localsid_next
 631 #undef _
 632     SR_LOCALSID_N_NEXT,
 633 } sr_localsid_next_t;
 634
 635 /**
 636  * @brief SR LocalSID graph node trace function
 637  *
 638  * @see sr_localsid
 639  */
 640 u8 *
 641 format_sr_localsid_trace (u8 * s, va_list * args)
 642 {
 643   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 644   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 645   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 646
 647   s =
 648     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
 649             &t->localsid);
 650   switch (t->behavior)
 651     {
 652     case SR_BEHAVIOR_END:
 653       s = format (s, "\tBehavior: End\n");
 654       break;
 655     case SR_BEHAVIOR_DX6:
 656       s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
 657       break;
 658     case SR_BEHAVIOR_DX4:
 659       s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
 660       break;
 661     case SR_BEHAVIOR_X:
 662       s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
 663       break;
 664     case SR_BEHAVIOR_T:
 665       s = format (s, "\tBehavior: IPv6 specific table lookup\n");
 666       break;
 667     case SR_BEHAVIOR_DT6:
 668       s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
 669       break;
 670     case SR_BEHAVIOR_DT4:
 671       s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
 672       break;
 673     case SR_BEHAVIOR_DX2:
 674       s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
 675       break;
 676     default:
 677       s = format (s, "\tBehavior: defined in plugin\n");        //TODO
 678       break;
 679     }
 680   if (t->num_segments != 0xFF)
 681     {
 682       if (t->num_segments > 0)
 683         {
 684           s = format (s, "\tSegments left: %d\n", t->segments_left);
 685           s = format (s, "\tSID list: [in ietf order]");
 686           int i = 0;
 687           for (i = 0; i < t->num_segments; i++)
 688             {
 689               s = format (s, "\n\t-> %U", format_ip6_address,
 690                           (ip6_address_t *) & t->sr[i *
 691                                                     sizeof (ip6_address_t)]);
 692             }
 693         }
 694     }
 695   return s;
 696 }
 697
 698 /**
 699  * @brief Function doing End processing.
 700  */
 701 static_always_inline void
 702 end_srh_processing (vlib_node_runtime_t * node,
 703                     vlib_buffer_t * b0,
 704                     ip6_header_t * ip0,
 705                     ip6_sr_header_t * sr0,
 706                     ip6_sr_localsid_t * ls0,
 707                     u32 * next0, u8 psp, ip6_ext_header_t * prev0)
 708 {
 709   ip6_address_t *new_dst0;
 710
 711   if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
 712     {
 713       if (sr0->segments_left == 1 && psp)
 714         {
 715           u32 new_l0, sr_len;
 716           u64 *copy_dst0, *copy_src0;
 717           u32 copy_len_u64s0 = 0;
 718
 719           ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
 720           ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
 721
 722           /* Remove the SRH taking care of the rest of IPv6 ext header */
 723           if (prev0)
 724             prev0->next_hdr = sr0->protocol;
 725           else
 726             ip0->protocol = sr0->protocol;
 727
 728           sr_len = ip6_ext_header_len (sr0);
 729           vlib_buffer_advance (b0, sr_len);
 730           new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
 731           ip0->payload_length = clib_host_to_net_u16 (new_l0);
 732           copy_src0 = (u64 *) ip0;
 733           copy_dst0 = copy_src0 + (sr0->length + 1);
 734           /* number of 8 octet units to copy
 735            * By default in absence of extension headers it is equal to length of ip6 header
 736            * With extension headers it number of 8 octet units of ext headers preceding
 737            * SR header
 738            */
 739           copy_len_u64s0 =
 740             (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
 741           copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
 742           copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
 743           copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
 744           copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
 745           copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
 746
 747           int i;
 748           for (i = copy_len_u64s0 - 1; i >= 0; i--)
 749             {
 750               copy_dst0[i] = copy_src0[i];
 751             }
 752
 753           if (ls0->behavior == SR_BEHAVIOR_X)
 754             {
 755               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 756               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 757             }
 758           else if (ls0->behavior == SR_BEHAVIOR_T)
 759             {
 760               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 761             }
 762         }
 763       else if (PREDICT_TRUE (sr0->segments_left > 0))
 764         {
 765           sr0->segments_left -= 1;
 766           new_dst0 = (ip6_address_t *) (sr0->segments);
 767           new_dst0 += sr0->segments_left;
 768           ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
 769           ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
 770
 771           if (ls0->behavior == SR_BEHAVIOR_X)
 772             {
 773               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 774               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 775             }
 776           else if (ls0->behavior == SR_BEHAVIOR_T)
 777             {
 778               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 779             }
 780         }
 781       else
 782         {
 783           *next0 = SR_LOCALSID_NEXT_ERROR;
 784           b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
 785         }
 786     }
 787   else
 788     {
 789       /* Error. Routing header of type != SR */
 790       *next0 = SR_LOCALSID_NEXT_ERROR;
 791       b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
 792     }
 793 }
 794
 795 /*
 796  * @brief Function doing SRH processing for D* variants
 797  */
 798 static_always_inline void
 799 end_decaps_srh_processing (vlib_node_runtime_t * node,
 800                            vlib_buffer_t * b0,
 801                            ip6_header_t * ip0,
 802                            ip6_sr_header_t * sr0,
 803                            ip6_sr_localsid_t * ls0, u32 * next0)
 804 {
 805   /* Compute the size of the IPv6 header with all Ext. headers */
 806   u8 next_proto;
 807   ip6_ext_header_t *next_ext_header;
 808   u16 total_size = 0;
 809
 810   next_proto = ip0->protocol;
 811   next_ext_header = (void *) (ip0 + 1);
 812   total_size = sizeof (ip6_header_t);
 813   while (ip6_ext_hdr (next_proto))
 814     {
 815       total_size += ip6_ext_header_len (next_ext_header);
 816       next_proto = next_ext_header->next_hdr;
 817       next_ext_header = ip6_ext_next_header (next_ext_header);
 818     }
 819
 820   /* Ensure this is the last segment. Otherwise drop. */
 821   if (sr0 && sr0->segments_left != 0)
 822     {
 823       *next0 = SR_LOCALSID_NEXT_ERROR;
 824       b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
 825       return;
 826     }
 827
 828   switch (next_proto)
 829     {
 830     case IP_PROTOCOL_IPV6:
 831       /* Encap-End IPv6. Pop outer IPv6 header. */
 832       if (ls0->behavior == SR_BEHAVIOR_DX6)
 833         {
 834           vlib_buffer_advance (b0, total_size);
 835           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 836           *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 837           return;
 838         }
 839       else if (ls0->behavior == SR_BEHAVIOR_DT6)
 840         {
 841           vlib_buffer_advance (b0, total_size);
 842           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 843           return;
 844         }
 845       break;
 846     case IP_PROTOCOL_IP_IN_IP:
 847       /* Encap-End IPv4. Pop outer IPv6 header */
 848       if (ls0->behavior == SR_BEHAVIOR_DX4)
 849         {
 850           vlib_buffer_advance (b0, total_size);
 851           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 852           *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
 853           return;
 854         }
 855       else if (ls0->behavior == SR_BEHAVIOR_DT4)
 856         {
 857           vlib_buffer_advance (b0, total_size);
 858           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 859           *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
 860           return;
 861         }
 862       break;
 863     case IP_PROTOCOL_IP6_NONXT:
 864       /* L2 encaps */
 865       if (ls0->behavior == SR_BEHAVIOR_DX2)
 866         {
 867           vlib_buffer_advance (b0, total_size);
 868           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
 869           *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
 870           return;
 871         }
 872       break;
 873     }
 874   *next0 = SR_LOCALSID_NEXT_ERROR;
 875   b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
 876   return;
 877 }
 878
 879 /**
 880  * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
 881  */
 882 static uword
 883 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 884                   vlib_frame_t * from_frame)
 885 {
 886   u32 n_left_from, next_index, *from, *to_next;
 887   ip6_sr_main_t *sm = &sr_main;
 888   from = vlib_frame_vector_args (from_frame);
 889   n_left_from = from_frame->n_vectors;
 890   next_index = node->cached_next_index;
 891   u32 thread_index = vlib_get_thread_index ();
 892
 893   while (n_left_from > 0)
 894     {
 895       u32 n_left_to_next;
 896       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 897
 898       /* Quad - Loop */
 899       while (n_left_from >= 8 && n_left_to_next >= 4)
 900         {
 901           u32 bi0, bi1, bi2, bi3;
 902           vlib_buffer_t *b0, *b1, *b2, *b3;
 903           ip6_header_t *ip0, *ip1, *ip2, *ip3;
 904           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
 905           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
 906           u32 next0, next1, next2, next3;
 907           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
 908           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
 909
 910           /* Prefetch next iteration. */
 911           {
 912             vlib_buffer_t *p4, *p5, *p6, *p7;
 913
 914             p4 = vlib_get_buffer (vm, from[4]);
 915             p5 = vlib_get_buffer (vm, from[5]);
 916             p6 = vlib_get_buffer (vm, from[6]);
 917             p7 = vlib_get_buffer (vm, from[7]);
 918
 919             /* Prefetch the buffer header and packet for the N+4 loop iteration */
 920             vlib_prefetch_buffer_header (p4, LOAD);
 921             vlib_prefetch_buffer_header (p5, LOAD);
 922             vlib_prefetch_buffer_header (p6, LOAD);
 923             vlib_prefetch_buffer_header (p7, LOAD);
 924
 925             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
 926             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
 927             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
 928             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
 929           }
 930
 931           to_next[0] = bi0 = from[0];
 932           to_next[1] = bi1 = from[1];
 933           to_next[2] = bi2 = from[2];
 934           to_next[3] = bi3 = from[3];
 935           from += 4;
 936           to_next += 4;
 937           n_left_from -= 4;
 938           n_left_to_next -= 4;
 939
 940           b0 = vlib_get_buffer (vm, bi0);
 941           b1 = vlib_get_buffer (vm, bi1);
 942           b2 = vlib_get_buffer (vm, bi2);
 943           b3 = vlib_get_buffer (vm, bi3);
 944
 945           ls0 =
 946             pool_elt_at_index (sm->localsids,
 947                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 948           ls1 =
 949             pool_elt_at_index (sm->localsids,
 950                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 951           ls2 =
 952             pool_elt_at_index (sm->localsids,
 953                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 954           ls3 =
 955             pool_elt_at_index (sm->localsids,
 956                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 957
 958           ip0 = vlib_buffer_get_current (b0);
 959           ip1 = vlib_buffer_get_current (b1);
 960           ip2 = vlib_buffer_get_current (b2);
 961           ip3 = vlib_buffer_get_current (b3);
 962
 963           ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
 964           ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
 965           ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
 966           ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
 967
 968           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
 969           end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
 970           end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
 971           end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
 972
 973           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 974             {
 975               sr_localsid_trace_t *tr =
 976                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 977               tr->num_segments = 0;
 978               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
 979                            sizeof (tr->localsid.as_u8));
 980               tr->behavior = ls0->behavior;
 981               if (ip0 == vlib_buffer_get_current (b0))
 982                 {
 983                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
 984                       && sr0->type == ROUTING_HEADER_TYPE_SR)
 985                     {
 986                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
 987                       tr->num_segments =
 988                         sr0->length * 8 / sizeof (ip6_address_t);
 989                       tr->segments_left = sr0->segments_left;
 990                     }
 991                 }
 992               else
 993                 tr->num_segments = 0xFF;
 994             }
 995
 996           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
 997             {
 998               sr_localsid_trace_t *tr =
 999                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1000               tr->num_segments = 0;
1001               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1002                            sizeof (tr->localsid.as_u8));
1003               tr->behavior = ls1->behavior;
1004               if (ip1 == vlib_buffer_get_current (b1))
1005                 {
1006                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1007                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1008                     {
1009                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1010                       tr->num_segments =
1011                         sr1->length * 8 / sizeof (ip6_address_t);
1012                       tr->segments_left = sr1->segments_left;
1013                     }
1014                 }
1015               else
1016                 tr->num_segments = 0xFF;
1017             }
1018
1019           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1020             {
1021               sr_localsid_trace_t *tr =
1022                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1023               tr->num_segments = 0;
1024               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1025                            sizeof (tr->localsid.as_u8));
1026               tr->behavior = ls2->behavior;
1027               if (ip2 == vlib_buffer_get_current (b2))
1028                 {
1029                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1030                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1031                     {
1032                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1033                       tr->num_segments =
1034                         sr2->length * 8 / sizeof (ip6_address_t);
1035                       tr->segments_left = sr2->segments_left;
1036                     }
1037                 }
1038               else
1039                 tr->num_segments = 0xFF;
1040             }
1041
1042           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1043             {
1044               sr_localsid_trace_t *tr =
1045                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1046               tr->num_segments = 0;
1047               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1048                            sizeof (tr->localsid.as_u8));
1049               tr->behavior = ls3->behavior;
1050               if (ip3 == vlib_buffer_get_current (b3))
1051                 {
1052                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1053                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1054                     {
1055                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1056                       tr->num_segments =
1057                         sr3->length * 8 / sizeof (ip6_address_t);
1058                       tr->segments_left = sr3->segments_left;
1059                     }
1060                 }
1061               else
1062                 tr->num_segments = 0xFF;
1063             }
1064
1065           vlib_increment_combined_counter
1066             (((next0 ==
1067                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1068               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1069              1, vlib_buffer_length_in_chain (vm, b0));
1070
1071           vlib_increment_combined_counter
1072             (((next1 ==
1073                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1074               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1075              1, vlib_buffer_length_in_chain (vm, b1));
1076
1077           vlib_increment_combined_counter
1078             (((next2 ==
1079                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1080               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1081              1, vlib_buffer_length_in_chain (vm, b2));
1082
1083           vlib_increment_combined_counter
1084             (((next3 ==
1085                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1086               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1087              1, vlib_buffer_length_in_chain (vm, b3));
1088
1089           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1090                                            n_left_to_next, bi0, bi1, bi2, bi3,
1091                                            next0, next1, next2, next3);
1092         }
1093
1094       /* Single loop for potentially the last three packets */
1095       while (n_left_from > 0 && n_left_to_next > 0)
1096         {
1097           u32 bi0;
1098           vlib_buffer_t *b0;
1099           ip6_header_t *ip0;
1100           ip6_ext_header_t *prev0;
1101           ip6_sr_header_t *sr0;
1102           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1103           ip6_sr_localsid_t *ls0;
1104
1105           bi0 = from[0];
1106           to_next[0] = bi0;
1107           from += 1;
1108           to_next += 1;
1109           n_left_from -= 1;
1110           n_left_to_next -= 1;
1111
1112           b0 = vlib_get_buffer (vm, bi0);
1113           ip0 = vlib_buffer_get_current (b0);
1114
1115           /* Lookup the SR End behavior based on IP DA (adj) */
1116           ls0 =
1117             pool_elt_at_index (sm->localsids,
1118                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1119
1120           /* Find SRH as well as previous header */
1121           ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1122
1123           /* SRH processing and End variants */
1124           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1125
1126           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1127             {
1128               sr_localsid_trace_t *tr =
1129                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1130               tr->num_segments = 0;
1131               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1132                            sizeof (tr->localsid.as_u8));
1133               tr->behavior = ls0->behavior;
1134               if (ip0 == vlib_buffer_get_current (b0))
1135                 {
1136                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1137                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1138                     {
1139                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1140                       tr->num_segments =
1141                         sr0->length * 8 / sizeof (ip6_address_t);
1142                       tr->segments_left = sr0->segments_left;
1143                     }
1144                 }
1145               else
1146                 tr->num_segments = 0xFF;
1147             }
1148
1149           /* Increase the counters */
1150           vlib_increment_combined_counter
1151             (((next0 ==
1152                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1153               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1154              1, vlib_buffer_length_in_chain (vm, b0));
1155
1156           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1157                                            n_left_to_next, bi0, next0);
1158         }
1159       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1160     }
1161   return from_frame->n_vectors;
1162 }
1163
1164 /* *INDENT-OFF* */
1165 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1166   .function = sr_localsid_d_fn,
1167   .name = "sr-localsid-d",
1168   .vector_size = sizeof (u32),
1169   .format_trace = format_sr_localsid_trace,
1170   .type = VLIB_NODE_TYPE_INTERNAL,
1171   .n_errors = SR_LOCALSID_N_ERROR,
1172   .error_strings = sr_localsid_error_strings,
1173   .n_next_nodes = SR_LOCALSID_N_NEXT,
1174   .next_nodes = {
1175 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1176     foreach_sr_localsid_next
1177 #undef _
1178   },
1179 };
1180 /* *INDENT-ON* */
1181
1182 /**
1183  * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1184  */
1185 static uword
1186 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1187                 vlib_frame_t * from_frame)
1188 {
1189   u32 n_left_from, next_index, *from, *to_next;
1190   ip6_sr_main_t *sm = &sr_main;
1191   from = vlib_frame_vector_args (from_frame);
1192   n_left_from = from_frame->n_vectors;
1193   next_index = node->cached_next_index;
1194   u32 thread_index = vlib_get_thread_index ();
1195
1196   while (n_left_from > 0)
1197     {
1198       u32 n_left_to_next;
1199       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1200
1201       /* Quad - Loop */
1202       while (n_left_from >= 8 && n_left_to_next >= 4)
1203         {
1204           u32 bi0, bi1, bi2, bi3;
1205           vlib_buffer_t *b0, *b1, *b2, *b3;
1206           ip6_header_t *ip0, *ip1, *ip2, *ip3;
1207           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1208           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1209           u32 next0, next1, next2, next3;
1210           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1211           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1212
1213           /* Prefetch next iteration. */
1214           {
1215             vlib_buffer_t *p4, *p5, *p6, *p7;
1216
1217             p4 = vlib_get_buffer (vm, from[4]);
1218             p5 = vlib_get_buffer (vm, from[5]);
1219             p6 = vlib_get_buffer (vm, from[6]);
1220             p7 = vlib_get_buffer (vm, from[7]);
1221
1222             /* Prefetch the buffer header and packet for the N+2 loop iteration */
1223             vlib_prefetch_buffer_header (p4, LOAD);
1224             vlib_prefetch_buffer_header (p5, LOAD);
1225             vlib_prefetch_buffer_header (p6, LOAD);
1226             vlib_prefetch_buffer_header (p7, LOAD);
1227
1228             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1229             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1230             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1231             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1232           }
1233
1234           to_next[0] = bi0 = from[0];
1235           to_next[1] = bi1 = from[1];
1236           to_next[2] = bi2 = from[2];
1237           to_next[3] = bi3 = from[3];
1238           from += 4;
1239           to_next += 4;
1240           n_left_from -= 4;
1241           n_left_to_next -= 4;
1242
1243           b0 = vlib_get_buffer (vm, bi0);
1244           b1 = vlib_get_buffer (vm, bi1);
1245           b2 = vlib_get_buffer (vm, bi2);
1246           b3 = vlib_get_buffer (vm, bi3);
1247
1248           ip0 = vlib_buffer_get_current (b0);
1249           ip1 = vlib_buffer_get_current (b1);
1250           ip2 = vlib_buffer_get_current (b2);
1251           ip3 = vlib_buffer_get_current (b3);
1252
1253           ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1254           ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
1255           ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
1256           ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
1257
1258           ls0 =
1259             pool_elt_at_index (sm->localsids,
1260                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1261           ls1 =
1262             pool_elt_at_index (sm->localsids,
1263                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1264           ls2 =
1265             pool_elt_at_index (sm->localsids,
1266                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1267           ls3 =
1268             pool_elt_at_index (sm->localsids,
1269                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1270
1271           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1272                               prev0);
1273           end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1274                               prev1);
1275           end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1276                               prev2);
1277           end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1278                               prev3);
1279
1280           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1281             {
1282               sr_localsid_trace_t *tr =
1283                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1284               tr->num_segments = 0;
1285               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1286                            sizeof (tr->localsid.as_u8));
1287               tr->behavior = ls0->behavior;
1288               if (ip0 == vlib_buffer_get_current (b0))
1289                 {
1290                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1291                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1292                     {
1293                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1294                       tr->num_segments =
1295                         sr0->length * 8 / sizeof (ip6_address_t);
1296                       tr->segments_left = sr0->segments_left;
1297                     }
1298                 }
1299               else
1300                 tr->num_segments = 0xFF;
1301             }
1302
1303           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1304             {
1305               sr_localsid_trace_t *tr =
1306                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1307               tr->num_segments = 0;
1308               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1309                            sizeof (tr->localsid.as_u8));
1310               tr->behavior = ls1->behavior;
1311               if (ip1 == vlib_buffer_get_current (b1))
1312                 {
1313                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1314                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1315                     {
1316                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1317                       tr->num_segments =
1318                         sr1->length * 8 / sizeof (ip6_address_t);
1319                       tr->segments_left = sr1->segments_left;
1320                     }
1321                 }
1322               else
1323                 tr->num_segments = 0xFF;
1324             }
1325
1326           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1327             {
1328               sr_localsid_trace_t *tr =
1329                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1330               tr->num_segments = 0;
1331               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1332                            sizeof (tr->localsid.as_u8));
1333               tr->behavior = ls2->behavior;
1334               if (ip2 == vlib_buffer_get_current (b2))
1335                 {
1336                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1337                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1338                     {
1339                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1340                       tr->num_segments =
1341                         sr2->length * 8 / sizeof (ip6_address_t);
1342                       tr->segments_left = sr2->segments_left;
1343                     }
1344                 }
1345               else
1346                 tr->num_segments = 0xFF;
1347             }
1348
1349           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1350             {
1351               sr_localsid_trace_t *tr =
1352                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1353               tr->num_segments = 0;
1354               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1355                            sizeof (tr->localsid.as_u8));
1356               tr->behavior = ls3->behavior;
1357               if (ip3 == vlib_buffer_get_current (b3))
1358                 {
1359                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1360                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1361                     {
1362                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1363                       tr->num_segments =
1364                         sr3->length * 8 / sizeof (ip6_address_t);
1365                       tr->segments_left = sr3->segments_left;
1366                     }
1367                 }
1368               else
1369                 tr->num_segments = 0xFF;
1370             }
1371
1372           vlib_increment_combined_counter
1373             (((next0 ==
1374                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1375               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1376              1, vlib_buffer_length_in_chain (vm, b0));
1377
1378           vlib_increment_combined_counter
1379             (((next1 ==
1380                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1381               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1382              1, vlib_buffer_length_in_chain (vm, b1));
1383
1384           vlib_increment_combined_counter
1385             (((next2 ==
1386                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1387               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1388              1, vlib_buffer_length_in_chain (vm, b2));
1389
1390           vlib_increment_combined_counter
1391             (((next3 ==
1392                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1393               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1394              1, vlib_buffer_length_in_chain (vm, b3));
1395
1396           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1397                                            n_left_to_next, bi0, bi1, bi2, bi3,
1398                                            next0, next1, next2, next3);
1399         }
1400
1401       /* Single loop for potentially the last three packets */
1402       while (n_left_from > 0 && n_left_to_next > 0)
1403         {
1404           u32 bi0;
1405           vlib_buffer_t *b0;
1406           ip6_header_t *ip0 = 0;
1407           ip6_ext_header_t *prev0;
1408           ip6_sr_header_t *sr0;
1409           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1410           ip6_sr_localsid_t *ls0;
1411
1412           bi0 = from[0];
1413           to_next[0] = bi0;
1414           from += 1;
1415           to_next += 1;
1416           n_left_from -= 1;
1417           n_left_to_next -= 1;
1418
1419           b0 = vlib_get_buffer (vm, bi0);
1420           ip0 = vlib_buffer_get_current (b0);
1421           ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1422
1423           /* Lookup the SR End behavior based on IP DA (adj) */
1424           ls0 =
1425             pool_elt_at_index (sm->localsids,
1426                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1427
1428           /* SRH processing */
1429           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1430                               prev0);
1431
1432           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1433             {
1434               sr_localsid_trace_t *tr =
1435                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1436               tr->num_segments = 0;
1437               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1438                            sizeof (tr->localsid.as_u8));
1439               tr->behavior = ls0->behavior;
1440               if (ip0 == vlib_buffer_get_current (b0))
1441                 {
1442                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1443                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1444                     {
1445                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1446                       tr->num_segments =
1447                         sr0->length * 8 / sizeof (ip6_address_t);
1448                       tr->segments_left = sr0->segments_left;
1449                     }
1450                 }
1451               else
1452                 tr->num_segments = 0xFF;
1453             }
1454
1455           vlib_increment_combined_counter
1456             (((next0 ==
1457                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1458               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1459              1, vlib_buffer_length_in_chain (vm, b0));
1460
1461           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1462                                            n_left_to_next, bi0, next0);
1463         }
1464       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1465     }
1466   return from_frame->n_vectors;
1467 }
1468
1469 /* *INDENT-OFF* */
1470 VLIB_REGISTER_NODE (sr_localsid_node) = {
1471   .function = sr_localsid_fn,
1472   .name = "sr-localsid",
1473   .vector_size = sizeof (u32),
1474   .format_trace = format_sr_localsid_trace,
1475   .type = VLIB_NODE_TYPE_INTERNAL,
1476   .n_errors = SR_LOCALSID_N_ERROR,
1477   .error_strings = sr_localsid_error_strings,
1478   .n_next_nodes = SR_LOCALSID_N_NEXT,
1479   .next_nodes = {
1480 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1481     foreach_sr_localsid_next
1482 #undef _
1483   },
1484 };
1485 /* *INDENT-ON* */
1486
1487 static u8 *
1488 format_sr_dpo (u8 * s, va_list * args)
1489 {
1490   index_t index = va_arg (*args, index_t);
1491   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1492
1493   return (format (s, "SR: localsid_index:[%d]", index));
1494 }
1495
1496 const static dpo_vft_t sr_loc_vft = {
1497   .dv_lock = sr_dpo_lock,
1498   .dv_unlock = sr_dpo_unlock,
1499   .dv_format = format_sr_dpo,
1500 };
1501
1502 const static char *const sr_loc_ip6_nodes[] = {
1503   "sr-localsid",
1504   NULL,
1505 };
1506
1507 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1508   [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1509 };
1510
1511 const static char *const sr_loc_d_ip6_nodes[] = {
1512   "sr-localsid-d",
1513   NULL,
1514 };
1515
1516 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1517   [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1518 };
1519
1520
1521 /*************************** SR LocalSID plugins ******************************/
1522 /**
1523  * @brief SR LocalSID plugin registry
1524  */
1525 int
1526 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1527                                u8 * keyword_str, u8 * def_str,
1528                                u8 * params_str, dpo_type_t * dpo,
1529                                format_function_t * ls_format,
1530                                unformat_function_t * ls_unformat,
1531                                sr_plugin_callback_t * creation_fn,
1532                                sr_plugin_callback_t * removal_fn)
1533 {
1534   ip6_sr_main_t *sm = &sr_main;
1535   uword *p;
1536
1537   sr_localsid_fn_registration_t *plugin;
1538
1539   /* Did this function exist? If so update it */
1540   p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1541   if (p)
1542     {
1543       plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1544     }
1545   /* Else create a new one and set hash key */
1546   else
1547     {
1548       pool_get (sm->plugin_functions, plugin);
1549       hash_set_mem (sm->plugin_functions_by_key, fn_name,
1550                     plugin - sm->plugin_functions);
1551     }
1552
1553   memset (plugin, 0, sizeof (*plugin));
1554
1555   plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1556   plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1557   plugin->ls_format = ls_format;
1558   plugin->ls_unformat = ls_unformat;
1559   plugin->creation = creation_fn;
1560   plugin->removal = removal_fn;
1561   clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1562   plugin->function_name = format (0, "%s%c", fn_name, 0);
1563   plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1564   plugin->def_str = format (0, "%s%c", def_str, 0);
1565   plugin->params_str = format (0, "%s%c", params_str, 0);
1566
1567   return plugin->sr_localsid_function_number;
1568 }
1569
1570 /**
1571  * @brief CLI function to 'show' all available SR LocalSID behaviors
1572  */
1573 static clib_error_t *
1574 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1575                                        unformat_input_t * input,
1576                                        vlib_cli_command_t * cmd)
1577 {
1578   ip6_sr_main_t *sm = &sr_main;
1579   sr_localsid_fn_registration_t *plugin;
1580   sr_localsid_fn_registration_t **plugins_vec = 0;
1581   int i;
1582
1583   vlib_cli_output (vm,
1584                    "SR LocalSIDs behaviors:\n-----------------------\n\n");
1585
1586   /* *INDENT-OFF* */
1587   pool_foreach (plugin, sm->plugin_functions,
1588     ({ vec_add1 (plugins_vec, plugin); }));
1589   /* *INDENT-ON* */
1590
1591   /* Print static behaviors */
1592   vlib_cli_output (vm, "Default behaviors:\n"
1593                    "\tEnd\t-> Endpoint.\n"
1594                    "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1595                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1596                    "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1597                    "\t\tParameters: '<fib_table>'\n"
1598                    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1599                    "\t\tParameters: '<iface>'\n"
1600                    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1601                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1602                    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1603                    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1604                    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1605                    "\t\tParameters: '<ip6_fib_table>'\n"
1606                    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1607                    "\t\tParameters: '<ip4_fib_table>'\n");
1608   vlib_cli_output (vm, "Plugin behaviors:\n");
1609   for (i = 0; i < vec_len (plugins_vec); i++)
1610     {
1611       plugin = plugins_vec[i];
1612       vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1613                        plugin->def_str);
1614       vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1615     }
1616   return 0;
1617 }
1618
1619 /* *INDENT-OFF* */
1620 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1621   .path = "show sr localsids behaviors",
1622   .short_help = "show sr localsids behaviors",
1623   .function = show_sr_localsid_behaviors_command_fn,
1624 };
1625 /* *INDENT-ON* */
1626
1627 /**
1628  * @brief SR LocalSID initialization
1629  */
1630 clib_error_t *
1631 sr_localsids_init (vlib_main_t * vm)
1632 {
1633   /* Init memory for function keys */
1634   ip6_sr_main_t *sm = &sr_main;
1635   mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1636               sizeof (ip6_address_t));
1637   /* Init SR behaviors DPO type */
1638   sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1639   /* Init SR behaviors DPO type */
1640   sr_localsid_d_dpo_type =
1641     dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1642   /* Init memory for localsid plugins */
1643   sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1644   return 0;
1645 }
1646
1647 VLIB_INIT_FUNCTION (sr_localsids_init);
1648 /*
1649 * fd.io coding-style-patch-verification: ON
1650 *
1651 * Local Variables:
1652 * eval: (c-set-style "gnu")
1653 * End:
1654 */