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, u16 prefixlen,
  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   u8 pref_length = 128;
  74   sr_localsid_fn_registration_t *plugin = 0;
  75
  76   ip6_sr_localsid_t *ls = 0;
  77
  78   dpo_id_t dpo = DPO_INVALID;
  79
  80   /* Search for the item */
  81   p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
  82
  83   if (p)
  84     {
  85       if (is_del)
  86         {
  87           /* Retrieve localsid */
  88           ls = pool_elt_at_index (sm->localsids, p[0]);
  89           if (ls->behavior >= SR_BEHAVIOR_LAST)
  90             {
  91               plugin = pool_elt_at_index (sm->plugin_functions,
  92                                           ls->behavior - SR_BEHAVIOR_LAST);
  93               pref_length = plugin->prefix_length;
  94             }
  95
  96           if (prefixlen != 0)
  97             {
  98               pref_length = prefixlen;
  99             }
 100
 101           /* Delete FIB entry */
 102           fib_prefix_t pfx = {
 103             .fp_proto = FIB_PROTOCOL_IP6,
 104             .fp_len = pref_length,
 105             .fp_addr = {
 106                         .ip6 = *localsid_addr,
 107                         }
 108           };
 109
 110           fib_table_entry_delete (fib_table_find
 111                                   (FIB_PROTOCOL_IP6, fib_table), &pfx,
 112                                   FIB_SOURCE_SR);
 113
 114           /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
 115           if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
 116               || ls->behavior == SR_BEHAVIOR_DX4)
 117             adj_unlock (ls->nh_adj);
 118
 119           if (ls->behavior >= SR_BEHAVIOR_LAST)
 120             {
 121               /* Callback plugin removal function */
 122               rv = plugin->removal (ls);
 123             }
 124
 125           /* Delete localsid registry */
 126           pool_put (sm->localsids, ls);
 127           mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
 128           return 0;
 129         }
 130       else                      /* create with function already existing; complain */
 131         return -1;
 132     }
 133   else
 134     /* delete; localsid does not exist; complain */
 135   if (is_del)
 136     return -2;
 137
 138   if (behavior >= SR_BEHAVIOR_LAST)
 139     {
 140       sr_localsid_fn_registration_t *plugin = 0;
 141       plugin =
 142         pool_elt_at_index (sm->plugin_functions, behavior - SR_BEHAVIOR_LAST);
 143       pref_length = plugin->prefix_length;
 144     }
 145
 146   /* Check whether there exists a FIB entry with such address */
 147   fib_prefix_t pfx = {
 148     .fp_proto = FIB_PROTOCOL_IP6,
 149     .fp_len = pref_length,
 150   };
 151
 152   pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
 153   pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
 154
 155   if (prefixlen != 0)
 156     {
 157       pfx.fp_len = prefixlen;
 158     }
 159
 160   /* Lookup the FIB index associated to the table id provided */
 161   u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
 162   if (fib_index == ~0)
 163     return -3;
 164
 165   /* Lookup the localsid in such FIB table */
 166   fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
 167   if (FIB_NODE_INDEX_INVALID != fei)
 168     return -4;                  //There is an entry for such address (the localsid addr)
 169
 170   /* Create a new localsid registry */
 171   pool_get (sm->localsids, ls);
 172   clib_memset (ls, 0, sizeof (*ls));
 173
 174   clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
 175   ls->end_psp = end_psp;
 176   ls->behavior = behavior;
 177   ls->nh_adj = (u32) ~ 0;
 178   ls->fib_table = fib_table;
 179   ls->localsid_len = pfx.fp_len;
 180   switch (behavior)
 181     {
 182     case SR_BEHAVIOR_END:
 183       break;
 184     case SR_BEHAVIOR_X:
 185       ls->sw_if_index = sw_if_index;
 186       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 187       break;
 188     case SR_BEHAVIOR_T:
 189       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 190       break;
 191     case SR_BEHAVIOR_DX4:
 192       ls->sw_if_index = sw_if_index;
 193       clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
 194       break;
 195     case SR_BEHAVIOR_DX6:
 196       ls->sw_if_index = sw_if_index;
 197       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 198       break;
 199     case SR_BEHAVIOR_DT6:
 200       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 201       break;
 202     case SR_BEHAVIOR_DT4:
 203       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP4, sw_if_index);
 204       break;
 205     case SR_BEHAVIOR_DX2:
 206       ls->sw_if_index = sw_if_index;
 207       ls->vlan_index = vlan_index;
 208       break;
 209     }
 210
 211   /* Figure out the adjacency magic for Xconnect variants */
 212   if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
 213       || ls->behavior == SR_BEHAVIOR_DX6)
 214     {
 215       adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
 216
 217       /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
 218       if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
 219         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
 220                                             nh_addr, sw_if_index);
 221
 222       else if (ls->behavior == SR_BEHAVIOR_DX4)
 223         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
 224                                             nh_addr, sw_if_index);
 225
 226       /* Check for ADJ creation error. If so panic */
 227       if (nh_adj_index == ADJ_INDEX_INVALID)
 228         {
 229           pool_put (sm->localsids, ls);
 230           return -5;
 231         }
 232
 233       ls->nh_adj = nh_adj_index;
 234     }
 235
 236   /* Set DPO */
 237   if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X
 238       || ls->behavior == SR_BEHAVIOR_T)
 239     dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 240   else if (ls->behavior > SR_BEHAVIOR_D_FIRST
 241            && ls->behavior < SR_BEHAVIOR_LAST)
 242     dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 243   else if (ls->behavior >= SR_BEHAVIOR_LAST)
 244     {
 245       sr_localsid_fn_registration_t *plugin = 0;
 246       plugin = pool_elt_at_index (sm->plugin_functions,
 247                                   ls->behavior - SR_BEHAVIOR_LAST);
 248       /* Copy the unformat memory result */
 249       ls->plugin_mem = ls_plugin_mem;
 250       /* Callback plugin creation function */
 251       rv = plugin->creation (ls);
 252       if (rv)
 253         {
 254           pool_put (sm->localsids, ls);
 255           return -6;
 256         }
 257       dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
 258     }
 259
 260   /* Set hash key for searching localsid by address */
 261   mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
 262              NULL);
 263
 264   fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
 265                                    FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
 266   dpo_reset (&dpo);
 267
 268   /* Set counter to zero */
 269   vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
 270                                   ls - sm->localsids);
 271   vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
 272                                   ls - sm->localsids);
 273
 274   vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
 275                               ls - sm->localsids);
 276   vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
 277                               ls - sm->localsids);
 278
 279   return 0;
 280 }
 281
 282 /**
 283  * @brief SR LocalSID CLI function.
 284  *
 285  * @see sr_cli_localsid
 286  */
 287 static clib_error_t *
 288 sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 289                             vlib_cli_command_t * cmd)
 290 {
 291   vnet_main_t *vnm = vnet_get_main ();
 292   ip6_sr_main_t *sm = &sr_main;
 293   u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
 294   u16 prefix_len = 0;
 295   int is_del = 0;
 296   int end_psp = 0;
 297   ip6_address_t resulting_address;
 298   ip46_address_t next_hop;
 299   char address_set = 0;
 300   char behavior = 0;
 301   void *ls_plugin_mem = 0;
 302
 303   int rv;
 304
 305   clib_memset (&resulting_address, 0, sizeof (ip6_address_t));
 306   ip46_address_reset (&next_hop);
 307
 308   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 309     {
 310       if (unformat (input, "del"))
 311         is_del = 1;
 312       else if (!address_set
 313                && unformat (input, "address %U", unformat_ip6_address,
 314                             &resulting_address))
 315         address_set = 1;
 316       else if (!address_set
 317                && unformat (input, "prefix %U/%d", unformat_ip6_address,
 318                             &resulting_address, &prefix_len))
 319         address_set = 1;
 320       else if (!address_set
 321                && unformat (input, "addr %U", unformat_ip6_address,
 322                             &resulting_address))
 323         address_set = 1;
 324       else if (unformat (input, "fib-table %u", &fib_index));
 325       else if (vlan_index == (u32) ~ 0
 326                && unformat (input, "vlan %u", &vlan_index));
 327       else if (!behavior && unformat (input, "behavior"))
 328         {
 329           if (unformat (input, "end.x %U %U",
 330                         unformat_vnet_sw_interface, vnm, &sw_if_index,
 331                         unformat_ip6_address, &next_hop.ip6))
 332             behavior = SR_BEHAVIOR_X;
 333           else if (unformat (input, "end.t %u", &sw_if_index))
 334             behavior = SR_BEHAVIOR_T;
 335           else if (unformat (input, "end.dx6 %U %U",
 336                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 337                              unformat_ip6_address, &next_hop.ip6))
 338             behavior = SR_BEHAVIOR_DX6;
 339           else if (unformat (input, "end.dx4 %U %U",
 340                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 341                              unformat_ip4_address, &next_hop.ip4))
 342             behavior = SR_BEHAVIOR_DX4;
 343           else if (unformat (input, "end.dx2 %U",
 344                              unformat_vnet_sw_interface, vnm, &sw_if_index))
 345             behavior = SR_BEHAVIOR_DX2;
 346           else if (unformat (input, "end.dt6 %u", &sw_if_index))
 347             behavior = SR_BEHAVIOR_DT6;
 348           else if (unformat (input, "end.dt4 %u", &sw_if_index))
 349             behavior = SR_BEHAVIOR_DT4;
 350           else
 351             {
 352               /* Loop over all the plugin behavior format functions */
 353               sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
 354               sr_localsid_fn_registration_t **plugin_it = 0;
 355
 356               /* Create a vector out of the plugin pool as recommended */
 357               /* *INDENT-OFF* */
 358               pool_foreach (plugin, sm->plugin_functions,
 359                 {
 360                   vec_add1 (vec_plugins, plugin);
 361                 });
 362               /* *INDENT-ON* */
 363
 364               vec_foreach (plugin_it, vec_plugins)
 365               {
 366                 if (unformat
 367                     (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
 368                   {
 369                     behavior = (*plugin_it)->sr_localsid_function_number;
 370                     break;
 371                   }
 372               }
 373             }
 374
 375           if (!behavior)
 376             {
 377               if (unformat (input, "end"))
 378                 behavior = SR_BEHAVIOR_END;
 379               else
 380                 break;
 381             }
 382         }
 383       else if (!end_psp && unformat (input, "psp"))
 384         end_psp = 1;
 385       else
 386         break;
 387     }
 388
 389   if (!behavior && end_psp)
 390     behavior = SR_BEHAVIOR_END;
 391
 392   if (!address_set)
 393     return clib_error_return (0,
 394                               "Error: SRv6 LocalSID address is mandatory.");
 395   if (!is_del && !behavior)
 396     return clib_error_return (0,
 397                               "Error: SRv6 LocalSID behavior is mandatory.");
 398   if (vlan_index != (u32) ~ 0)
 399     return clib_error_return (0,
 400                               "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
 401   if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
 402     return clib_error_return (0,
 403                               "Error: SRv6 PSP only compatible with End and End.X");
 404
 405   rv =
 406     sr_cli_localsid (is_del, &resulting_address, prefix_len, end_psp,
 407                      behavior, sw_if_index, vlan_index, fib_index, &next_hop,
 408                      ls_plugin_mem);
 409
 410   switch (rv)
 411     {
 412     case 0:
 413       break;
 414     case 1:
 415       return 0;
 416     case -1:
 417       return clib_error_return (0,
 418                                 "Identical localsid already exists. Requested localsid not created.");
 419     case -2:
 420       return clib_error_return (0,
 421                                 "The requested localsid could not be deleted. SR localsid not found");
 422     case -3:
 423       return clib_error_return (0, "FIB table %u does not exist", fib_index);
 424     case -4:
 425       return clib_error_return (0, "There is already one FIB entry for the"
 426                                 "requested localsid non segment routing related");
 427     case -5:
 428       return clib_error_return (0,
 429                                 "Could not create ARP/ND entry for such next_hop. Internal error.");
 430     case -6:
 431       return clib_error_return (0,
 432                                 "Error on the plugin based localsid creation.");
 433     default:
 434       return clib_error_return (0, "BUG: sr localsid returns %d", rv);
 435     }
 436   return 0;
 437 }
 438
 439 /* *INDENT-OFF* */
 440 VLIB_CLI_COMMAND (sr_localsid_command, static) = {
 441   .path = "sr localsid",
 442   .short_help = "sr localsid (del) address XX:XX::YY:YY"
 443       "(fib-table 8) behavior STRING",
 444   .long_help =
 445     "Create SR LocalSID and binds it to a particular behavior\n"
 446     "Arguments:\n"
 447     "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
 448     "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
 449     "\tbehavior STRING            Specifies the behavior\n"
 450     "\n\tBehaviors:\n"
 451     "\tEnd\t-> Endpoint.\n"
 452     "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
 453     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 454     "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
 455     "\t\tParameters: '<iface>'\n"
 456     "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
 457     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 458     "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
 459     "\t\tParameters: '<iface> <ip4_next_hop>'\n"
 460     "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
 461     "\t\tParameters: '<ip6_fib_table>'\n"
 462     "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
 463     "\t\tParameters: '<ip4_fib_table>'\n",
 464   .function = sr_cli_localsid_command_fn,
 465 };
 466 /* *INDENT-ON* */
 467
 468 /**
 469  * @brief CLI function to 'show' all SR LocalSIDs on console.
 470  */
 471 static clib_error_t *
 472 show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 473                              vlib_cli_command_t * cmd)
 474 {
 475   vnet_main_t *vnm = vnet_get_main ();
 476   ip6_sr_main_t *sm = &sr_main;
 477   ip6_sr_localsid_t **localsid_list = 0;
 478   ip6_sr_localsid_t *ls;
 479   int i;
 480
 481   vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
 482   vlib_cli_output (vm, "=========================");
 483   /* *INDENT-OFF* */
 484   pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
 485   /* *INDENT-ON* */
 486   for (i = 0; i < vec_len (localsid_list); i++)
 487     {
 488       ls = localsid_list[i];
 489       switch (ls->behavior)
 490         {
 491         case SR_BEHAVIOR_END:
 492           vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd",
 493                            format_ip6_address, &ls->localsid);
 494           break;
 495         case SR_BEHAVIOR_X:
 496           vlib_cli_output (vm,
 497                            "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
 498                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 499                            format_ip6_address, &ls->localsid,
 500                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 501                            format_ip6_address, &ls->next_hop.ip6);
 502           break;
 503         case SR_BEHAVIOR_T:
 504           vlib_cli_output (vm,
 505                            "\tAddress: \t%U\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
 506                            "\n\tTable:  \t%u",
 507                            format_ip6_address, &ls->localsid,
 508                            fib_table_get_table_id (ls->vrf_index,
 509                                                    FIB_PROTOCOL_IP6));
 510           break;
 511         case SR_BEHAVIOR_DX4:
 512           vlib_cli_output (vm,
 513                            "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
 514                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 515                            format_ip6_address, &ls->localsid,
 516                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 517                            format_ip4_address, &ls->next_hop.ip4);
 518           break;
 519         case SR_BEHAVIOR_DX6:
 520           vlib_cli_output (vm,
 521                            "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
 522                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 523                            format_ip6_address, &ls->localsid,
 524                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 525                            format_ip6_address, &ls->next_hop.ip6);
 526           break;
 527         case SR_BEHAVIOR_DX2:
 528           if (ls->vlan_index == (u32) ~ 0)
 529             vlib_cli_output (vm,
 530                              "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
 531                              "\n\tIface:  \t%U", format_ip6_address,
 532                              &ls->localsid, format_vnet_sw_if_index_name, vnm,
 533                              ls->sw_if_index);
 534           else
 535             vlib_cli_output (vm,
 536                              "Unsupported yet. (DX2 with egress VLAN rewrite)");
 537           break;
 538         case SR_BEHAVIOR_DT6:
 539           vlib_cli_output (vm,
 540                            "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
 541                            "\n\tTable: %u", format_ip6_address, &ls->localsid,
 542                            fib_table_get_table_id (ls->vrf_index,
 543                                                    FIB_PROTOCOL_IP6));
 544           break;
 545         case SR_BEHAVIOR_DT4:
 546           vlib_cli_output (vm,
 547                            "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
 548                            "\n\tTable: \t%u", format_ip6_address,
 549                            &ls->localsid,
 550                            fib_table_get_table_id (ls->vrf_index,
 551                                                    FIB_PROTOCOL_IP4));
 552           break;
 553         default:
 554           if (ls->behavior >= SR_BEHAVIOR_LAST)
 555             {
 556               sr_localsid_fn_registration_t *plugin =
 557                 pool_elt_at_index (sm->plugin_functions,
 558                                    ls->behavior - SR_BEHAVIOR_LAST);
 559
 560               vlib_cli_output (vm, "\tAddress: \t%U\n"
 561                                "\tBehavior: \t%s (%s)\n\t%U",
 562                                format_ip6_address, &ls->localsid,
 563                                plugin->keyword_str, plugin->def_str,
 564                                plugin->ls_format, ls->plugin_mem);
 565             }
 566           else
 567             //Should never get here...
 568             vlib_cli_output (vm, "Internal error");
 569           break;
 570         }
 571       if (ls->end_psp)
 572         vlib_cli_output (vm, "\tPSP: \tTrue\n");
 573
 574       /* Print counters */
 575       vlib_counter_t valid, invalid;
 576       vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
 577       vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
 578       vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
 579                        valid.packets, valid.bytes);
 580       vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
 581                        invalid.packets, invalid.bytes);
 582       vlib_cli_output (vm, "--------------------");
 583     }
 584   return 0;
 585 }
 586
 587 /* *INDENT-OFF* */
 588 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
 589   .path = "show sr localsids",
 590   .short_help = "show sr localsids",
 591   .function = show_sr_localsid_command_fn,
 592 };
 593 /* *INDENT-ON* */
 594
 595 /**
 596  * @brief Function to 'clear' ALL SR localsid counters
 597  */
 598 static clib_error_t *
 599 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
 600                                        unformat_input_t * input,
 601                                        vlib_cli_command_t * cmd)
 602 {
 603   ip6_sr_main_t *sm = &sr_main;
 604
 605   vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
 606   vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
 607
 608   return 0;
 609 }
 610
 611 /* *INDENT-OFF* */
 612 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
 613   .path = "clear sr localsid-counters",
 614   .short_help = "clear sr localsid-counters",
 615   .function = clear_sr_localsid_counters_command_fn,
 616 };
 617 /* *INDENT-ON* */
 618
 619 /************************ SR LocalSID graphs node ****************************/
 620 /**
 621  * @brief SR localsid node trace
 622  */
 623 typedef struct
 624 {
 625   ip6_address_t localsid;
 626   u16 behavior;
 627   u8 sr[256];
 628   u8 num_segments;
 629   u8 segments_left;
 630 } sr_localsid_trace_t;
 631
 632 #define foreach_sr_localsid_error                                   \
 633 _(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
 634 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
 635 _(NO_SRH, "(SR-Error) No SR header")                                \
 636 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
 637 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
 638 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
 639
 640 typedef enum
 641 {
 642 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
 643   foreach_sr_localsid_error
 644 #undef _
 645     SR_LOCALSID_N_ERROR,
 646 } sr_localsid_error_t;
 647
 648 static char *sr_localsid_error_strings[] = {
 649 #define _(sym,string) string,
 650   foreach_sr_localsid_error
 651 #undef _
 652 };
 653
 654 #define foreach_sr_localsid_next        \
 655 _(ERROR, "error-drop")                  \
 656 _(IP6_LOOKUP, "ip6-lookup")             \
 657 _(IP4_LOOKUP, "ip4-lookup")             \
 658 _(IP6_REWRITE, "ip6-rewrite")           \
 659 _(IP4_REWRITE, "ip4-rewrite")           \
 660 _(INTERFACE_OUTPUT, "interface-output")
 661
 662 typedef enum
 663 {
 664 #define _(s,n) SR_LOCALSID_NEXT_##s,
 665   foreach_sr_localsid_next
 666 #undef _
 667     SR_LOCALSID_N_NEXT,
 668 } sr_localsid_next_t;
 669
 670 /**
 671  * @brief SR LocalSID graph node trace function
 672  *
 673  * @see sr_localsid
 674  */
 675 u8 *
 676 format_sr_localsid_trace (u8 * s, va_list * args)
 677 {
 678   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 679   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 680   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 681
 682   s =
 683     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
 684             &t->localsid);
 685   switch (t->behavior)
 686     {
 687     case SR_BEHAVIOR_END:
 688       s = format (s, "\tBehavior: End\n");
 689       break;
 690     case SR_BEHAVIOR_DX6:
 691       s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
 692       break;
 693     case SR_BEHAVIOR_DX4:
 694       s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
 695       break;
 696     case SR_BEHAVIOR_X:
 697       s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
 698       break;
 699     case SR_BEHAVIOR_T:
 700       s = format (s, "\tBehavior: IPv6 specific table lookup\n");
 701       break;
 702     case SR_BEHAVIOR_DT6:
 703       s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
 704       break;
 705     case SR_BEHAVIOR_DT4:
 706       s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
 707       break;
 708     case SR_BEHAVIOR_DX2:
 709       s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
 710       break;
 711     default:
 712       s = format (s, "\tBehavior: defined in plugin\n");        //TODO
 713       break;
 714     }
 715   if (t->num_segments != 0xFF)
 716     {
 717       if (t->num_segments > 0)
 718         {
 719           s = format (s, "\tSegments left: %d\n", t->segments_left);
 720           s = format (s, "\tSID list: [in ietf order]");
 721           int i = 0;
 722           for (i = 0; i < t->num_segments; i++)
 723             {
 724               s = format (s, "\n\t-> %U", format_ip6_address,
 725                           (ip6_address_t *) & t->sr[i *
 726                                                     sizeof (ip6_address_t)]);
 727             }
 728         }
 729     }
 730   return s;
 731 }
 732
 733 /**
 734  * @brief Function doing End processing.
 735  */
 736 static_always_inline void
 737 end_srh_processing (vlib_node_runtime_t * node,
 738                     vlib_buffer_t * b0,
 739                     ip6_header_t * ip0,
 740                     ip6_sr_header_t * sr0,
 741                     ip6_sr_localsid_t * ls0,
 742                     u32 * next0, u8 psp, ip6_ext_header_t * prev0)
 743 {
 744   ip6_address_t *new_dst0;
 745
 746   if (PREDICT_TRUE (sr0 && sr0->type == ROUTING_HEADER_TYPE_SR))
 747     {
 748       if (sr0->segments_left == 1 && psp)
 749         {
 750           u32 new_l0, sr_len;
 751           u64 *copy_dst0, *copy_src0;
 752           u32 copy_len_u64s0 = 0;
 753
 754           ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
 755           ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
 756
 757           /* Remove the SRH taking care of the rest of IPv6 ext header */
 758           if (prev0)
 759             prev0->next_hdr = sr0->protocol;
 760           else
 761             ip0->protocol = sr0->protocol;
 762
 763           sr_len = ip6_ext_header_len (sr0);
 764           vlib_buffer_advance (b0, sr_len);
 765           new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
 766           ip0->payload_length = clib_host_to_net_u16 (new_l0);
 767           copy_src0 = (u64 *) ip0;
 768           copy_dst0 = copy_src0 + (sr0->length + 1);
 769           /* number of 8 octet units to copy
 770            * By default in absence of extension headers it is equal to length of ip6 header
 771            * With extension headers it number of 8 octet units of ext headers preceding
 772            * SR header
 773            */
 774           copy_len_u64s0 =
 775             (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
 776           copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
 777           copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
 778           copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
 779           copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
 780           copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
 781
 782           int i;
 783           for (i = copy_len_u64s0 - 1; i >= 0; i--)
 784             {
 785               copy_dst0[i] = copy_src0[i];
 786             }
 787
 788           if (ls0->behavior == SR_BEHAVIOR_X)
 789             {
 790               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 791               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 792             }
 793           else if (ls0->behavior == SR_BEHAVIOR_T)
 794             {
 795               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 796             }
 797         }
 798       else if (PREDICT_TRUE (sr0->segments_left > 0))
 799         {
 800           sr0->segments_left -= 1;
 801           new_dst0 = (ip6_address_t *) (sr0->segments);
 802           new_dst0 += sr0->segments_left;
 803           ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
 804           ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
 805
 806           if (ls0->behavior == SR_BEHAVIOR_X)
 807             {
 808               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 809               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 810             }
 811           else if (ls0->behavior == SR_BEHAVIOR_T)
 812             {
 813               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 814             }
 815         }
 816       else
 817         {
 818           *next0 = SR_LOCALSID_NEXT_ERROR;
 819           b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
 820         }
 821     }
 822   else
 823     {
 824       /* Error. Routing header of type != SR */
 825       *next0 = SR_LOCALSID_NEXT_ERROR;
 826       b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
 827     }
 828 }
 829
 830 /*
 831  * @brief Function doing SRH processing for D* variants
 832  */
 833 static_always_inline void
 834 end_decaps_srh_processing (vlib_node_runtime_t * node,
 835                            vlib_buffer_t * b0,
 836                            ip6_header_t * ip0,
 837                            ip6_sr_header_t * sr0,
 838                            ip6_sr_localsid_t * ls0, u32 * next0)
 839 {
 840   /* Compute the size of the IPv6 header with all Ext. headers */
 841   u8 next_proto;
 842   ip6_ext_header_t *next_ext_header;
 843   u16 total_size = 0;
 844
 845   next_proto = ip0->protocol;
 846   next_ext_header = (void *) (ip0 + 1);
 847   total_size = sizeof (ip6_header_t);
 848   while (ip6_ext_hdr (next_proto))
 849     {
 850       total_size += ip6_ext_header_len (next_ext_header);
 851       next_proto = next_ext_header->next_hdr;
 852       next_ext_header = ip6_ext_next_header (next_ext_header);
 853     }
 854
 855   /* Ensure this is the last segment. Otherwise drop. */
 856   if (sr0 && sr0->segments_left != 0)
 857     {
 858       *next0 = SR_LOCALSID_NEXT_ERROR;
 859       b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
 860       return;
 861     }
 862
 863   switch (next_proto)
 864     {
 865     case IP_PROTOCOL_IPV6:
 866       /* Encap-End IPv6. Pop outer IPv6 header. */
 867       if (ls0->behavior == SR_BEHAVIOR_DX6)
 868         {
 869           vlib_buffer_advance (b0, total_size);
 870           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 871           *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 872           return;
 873         }
 874       else if (ls0->behavior == SR_BEHAVIOR_DT6)
 875         {
 876           vlib_buffer_advance (b0, total_size);
 877           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 878           return;
 879         }
 880       break;
 881     case IP_PROTOCOL_IP_IN_IP:
 882       /* Encap-End IPv4. Pop outer IPv6 header */
 883       if (ls0->behavior == SR_BEHAVIOR_DX4)
 884         {
 885           vlib_buffer_advance (b0, total_size);
 886           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 887           *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
 888           return;
 889         }
 890       else if (ls0->behavior == SR_BEHAVIOR_DT4)
 891         {
 892           vlib_buffer_advance (b0, total_size);
 893           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 894           *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
 895           return;
 896         }
 897       break;
 898     case IP_PROTOCOL_IP6_NONXT:
 899       /* L2 encaps */
 900       if (ls0->behavior == SR_BEHAVIOR_DX2)
 901         {
 902           vlib_buffer_advance (b0, total_size);
 903           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
 904           *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
 905           return;
 906         }
 907       break;
 908     }
 909   *next0 = SR_LOCALSID_NEXT_ERROR;
 910   b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
 911   return;
 912 }
 913
 914 /**
 915  * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
 916  */
 917 static uword
 918 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 919                   vlib_frame_t * from_frame)
 920 {
 921   u32 n_left_from, next_index, *from, *to_next;
 922   ip6_sr_main_t *sm = &sr_main;
 923   from = vlib_frame_vector_args (from_frame);
 924   n_left_from = from_frame->n_vectors;
 925   next_index = node->cached_next_index;
 926   u32 thread_index = vm->thread_index;
 927
 928   while (n_left_from > 0)
 929     {
 930       u32 n_left_to_next;
 931       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 932
 933       /* Quad - Loop */
 934       while (n_left_from >= 8 && n_left_to_next >= 4)
 935         {
 936           u32 bi0, bi1, bi2, bi3;
 937           vlib_buffer_t *b0, *b1, *b2, *b3;
 938           ip6_header_t *ip0, *ip1, *ip2, *ip3;
 939           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
 940           u32 next0, next1, next2, next3;
 941           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
 942           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
 943
 944           /* Prefetch next iteration. */
 945           {
 946             vlib_buffer_t *p4, *p5, *p6, *p7;
 947
 948             p4 = vlib_get_buffer (vm, from[4]);
 949             p5 = vlib_get_buffer (vm, from[5]);
 950             p6 = vlib_get_buffer (vm, from[6]);
 951             p7 = vlib_get_buffer (vm, from[7]);
 952
 953             /* Prefetch the buffer header and packet for the N+4 loop iteration */
 954             vlib_prefetch_buffer_header (p4, LOAD);
 955             vlib_prefetch_buffer_header (p5, LOAD);
 956             vlib_prefetch_buffer_header (p6, LOAD);
 957             vlib_prefetch_buffer_header (p7, LOAD);
 958
 959             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
 960             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
 961             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
 962             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
 963           }
 964
 965           to_next[0] = bi0 = from[0];
 966           to_next[1] = bi1 = from[1];
 967           to_next[2] = bi2 = from[2];
 968           to_next[3] = bi3 = from[3];
 969           from += 4;
 970           to_next += 4;
 971           n_left_from -= 4;
 972           n_left_to_next -= 4;
 973
 974           b0 = vlib_get_buffer (vm, bi0);
 975           b1 = vlib_get_buffer (vm, bi1);
 976           b2 = vlib_get_buffer (vm, bi2);
 977           b3 = vlib_get_buffer (vm, bi3);
 978
 979           ls0 =
 980             pool_elt_at_index (sm->localsids,
 981                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 982           ls1 =
 983             pool_elt_at_index (sm->localsids,
 984                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
 985           ls2 =
 986             pool_elt_at_index (sm->localsids,
 987                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
 988           ls3 =
 989             pool_elt_at_index (sm->localsids,
 990                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
 991
 992           ip0 = vlib_buffer_get_current (b0);
 993           ip1 = vlib_buffer_get_current (b1);
 994           ip2 = vlib_buffer_get_current (b2);
 995           ip3 = vlib_buffer_get_current (b3);
 996
 997           sr0 =
 998             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
 999           sr1 =
1000             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, NULL);
1001           sr2 =
1002             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, NULL);
1003           sr3 =
1004             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, NULL);
1005
1006           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1007           end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
1008           end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
1009           end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
1010
1011           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1012             {
1013               sr_localsid_trace_t *tr =
1014                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1015               tr->num_segments = 0;
1016               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1017                            sizeof (tr->localsid.as_u8));
1018               tr->behavior = ls0->behavior;
1019               if (ip0 == vlib_buffer_get_current (b0))
1020                 {
1021                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1022                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1023                     {
1024                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1025                       tr->num_segments =
1026                         sr0->length * 8 / sizeof (ip6_address_t);
1027                       tr->segments_left = sr0->segments_left;
1028                     }
1029                 }
1030               else
1031                 tr->num_segments = 0xFF;
1032             }
1033
1034           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1035             {
1036               sr_localsid_trace_t *tr =
1037                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1038               tr->num_segments = 0;
1039               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1040                            sizeof (tr->localsid.as_u8));
1041               tr->behavior = ls1->behavior;
1042               if (ip1 == vlib_buffer_get_current (b1))
1043                 {
1044                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1045                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1046                     {
1047                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1048                       tr->num_segments =
1049                         sr1->length * 8 / sizeof (ip6_address_t);
1050                       tr->segments_left = sr1->segments_left;
1051                     }
1052                 }
1053               else
1054                 tr->num_segments = 0xFF;
1055             }
1056
1057           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1058             {
1059               sr_localsid_trace_t *tr =
1060                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1061               tr->num_segments = 0;
1062               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1063                            sizeof (tr->localsid.as_u8));
1064               tr->behavior = ls2->behavior;
1065               if (ip2 == vlib_buffer_get_current (b2))
1066                 {
1067                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1068                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1069                     {
1070                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1071                       tr->num_segments =
1072                         sr2->length * 8 / sizeof (ip6_address_t);
1073                       tr->segments_left = sr2->segments_left;
1074                     }
1075                 }
1076               else
1077                 tr->num_segments = 0xFF;
1078             }
1079
1080           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1081             {
1082               sr_localsid_trace_t *tr =
1083                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1084               tr->num_segments = 0;
1085               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1086                            sizeof (tr->localsid.as_u8));
1087               tr->behavior = ls3->behavior;
1088               if (ip3 == vlib_buffer_get_current (b3))
1089                 {
1090                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1091                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1092                     {
1093                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1094                       tr->num_segments =
1095                         sr3->length * 8 / sizeof (ip6_address_t);
1096                       tr->segments_left = sr3->segments_left;
1097                     }
1098                 }
1099               else
1100                 tr->num_segments = 0xFF;
1101             }
1102
1103           vlib_increment_combined_counter
1104             (((next0 ==
1105                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1106               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1107              1, vlib_buffer_length_in_chain (vm, b0));
1108
1109           vlib_increment_combined_counter
1110             (((next1 ==
1111                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1112               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1113              1, vlib_buffer_length_in_chain (vm, b1));
1114
1115           vlib_increment_combined_counter
1116             (((next2 ==
1117                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1118               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1119              1, vlib_buffer_length_in_chain (vm, b2));
1120
1121           vlib_increment_combined_counter
1122             (((next3 ==
1123                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1124               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1125              1, vlib_buffer_length_in_chain (vm, b3));
1126
1127           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1128                                            n_left_to_next, bi0, bi1, bi2, bi3,
1129                                            next0, next1, next2, next3);
1130         }
1131
1132       /* Single loop for potentially the last three packets */
1133       while (n_left_from > 0 && n_left_to_next > 0)
1134         {
1135           u32 bi0;
1136           vlib_buffer_t *b0;
1137           ip6_header_t *ip0;
1138           ip6_sr_header_t *sr0;
1139           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1140           ip6_sr_localsid_t *ls0;
1141
1142           bi0 = from[0];
1143           to_next[0] = bi0;
1144           from += 1;
1145           to_next += 1;
1146           n_left_from -= 1;
1147           n_left_to_next -= 1;
1148
1149           b0 = vlib_get_buffer (vm, bi0);
1150           ip0 = vlib_buffer_get_current (b0);
1151
1152           /* Lookup the SR End behavior based on IP DA (adj) */
1153           ls0 =
1154             pool_elt_at_index (sm->localsids,
1155                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1156
1157           /* Find SRH as well as previous header */
1158           sr0 =
1159             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1160
1161           /* SRH processing and End variants */
1162           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1163
1164           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1165             {
1166               sr_localsid_trace_t *tr =
1167                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1168               tr->num_segments = 0;
1169               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1170                            sizeof (tr->localsid.as_u8));
1171               tr->behavior = ls0->behavior;
1172               if (ip0 == vlib_buffer_get_current (b0))
1173                 {
1174                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1175                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1176                     {
1177                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1178                       tr->num_segments =
1179                         sr0->length * 8 / sizeof (ip6_address_t);
1180                       tr->segments_left = sr0->segments_left;
1181                     }
1182                 }
1183               else
1184                 tr->num_segments = 0xFF;
1185             }
1186
1187           /* Increase the counters */
1188           vlib_increment_combined_counter
1189             (((next0 ==
1190                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1191               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1192              1, vlib_buffer_length_in_chain (vm, b0));
1193
1194           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1195                                            n_left_to_next, bi0, next0);
1196         }
1197       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1198     }
1199   return from_frame->n_vectors;
1200 }
1201
1202 /* *INDENT-OFF* */
1203 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1204   .function = sr_localsid_d_fn,
1205   .name = "sr-localsid-d",
1206   .vector_size = sizeof (u32),
1207   .format_trace = format_sr_localsid_trace,
1208   .type = VLIB_NODE_TYPE_INTERNAL,
1209   .n_errors = SR_LOCALSID_N_ERROR,
1210   .error_strings = sr_localsid_error_strings,
1211   .n_next_nodes = SR_LOCALSID_N_NEXT,
1212   .next_nodes = {
1213 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1214     foreach_sr_localsid_next
1215 #undef _
1216   },
1217 };
1218 /* *INDENT-ON* */
1219
1220 /**
1221  * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1222  */
1223 static uword
1224 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1225                 vlib_frame_t * from_frame)
1226 {
1227   u32 n_left_from, next_index, *from, *to_next;
1228   ip6_sr_main_t *sm = &sr_main;
1229   from = vlib_frame_vector_args (from_frame);
1230   n_left_from = from_frame->n_vectors;
1231   next_index = node->cached_next_index;
1232   u32 thread_index = vm->thread_index;
1233
1234   while (n_left_from > 0)
1235     {
1236       u32 n_left_to_next;
1237       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1238
1239       /* Quad - Loop */
1240       while (n_left_from >= 8 && n_left_to_next >= 4)
1241         {
1242           u32 bi0, bi1, bi2, bi3;
1243           vlib_buffer_t *b0, *b1, *b2, *b3;
1244           ip6_header_t *ip0, *ip1, *ip2, *ip3;
1245           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1246           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1247           u32 next0, next1, next2, next3;
1248           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1249           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1250
1251           /* Prefetch next iteration. */
1252           {
1253             vlib_buffer_t *p4, *p5, *p6, *p7;
1254
1255             p4 = vlib_get_buffer (vm, from[4]);
1256             p5 = vlib_get_buffer (vm, from[5]);
1257             p6 = vlib_get_buffer (vm, from[6]);
1258             p7 = vlib_get_buffer (vm, from[7]);
1259
1260             /* Prefetch the buffer header and packet for the N+2 loop iteration */
1261             vlib_prefetch_buffer_header (p4, LOAD);
1262             vlib_prefetch_buffer_header (p5, LOAD);
1263             vlib_prefetch_buffer_header (p6, LOAD);
1264             vlib_prefetch_buffer_header (p7, LOAD);
1265
1266             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1267             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1268             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1269             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1270           }
1271
1272           to_next[0] = bi0 = from[0];
1273           to_next[1] = bi1 = from[1];
1274           to_next[2] = bi2 = from[2];
1275           to_next[3] = bi3 = from[3];
1276           from += 4;
1277           to_next += 4;
1278           n_left_from -= 4;
1279           n_left_to_next -= 4;
1280
1281           b0 = vlib_get_buffer (vm, bi0);
1282           b1 = vlib_get_buffer (vm, bi1);
1283           b2 = vlib_get_buffer (vm, bi2);
1284           b3 = vlib_get_buffer (vm, bi3);
1285
1286           ip0 = vlib_buffer_get_current (b0);
1287           ip1 = vlib_buffer_get_current (b1);
1288           ip2 = vlib_buffer_get_current (b2);
1289           ip3 = vlib_buffer_get_current (b3);
1290
1291           sr0 =
1292             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1293           sr1 =
1294             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, &prev1);
1295           sr2 =
1296             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, &prev2);
1297           sr3 =
1298             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, &prev3);
1299
1300           ls0 =
1301             pool_elt_at_index (sm->localsids,
1302                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1303           ls1 =
1304             pool_elt_at_index (sm->localsids,
1305                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
1306           ls2 =
1307             pool_elt_at_index (sm->localsids,
1308                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
1309           ls3 =
1310             pool_elt_at_index (sm->localsids,
1311                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1312
1313           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1314                               prev0);
1315           end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1316                               prev1);
1317           end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1318                               prev2);
1319           end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1320                               prev3);
1321
1322           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1323             {
1324               sr_localsid_trace_t *tr =
1325                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1326               tr->num_segments = 0;
1327               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1328                            sizeof (tr->localsid.as_u8));
1329               tr->behavior = ls0->behavior;
1330               if (ip0 == vlib_buffer_get_current (b0))
1331                 {
1332                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1333                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1334                     {
1335                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1336                       tr->num_segments =
1337                         sr0->length * 8 / sizeof (ip6_address_t);
1338                       tr->segments_left = sr0->segments_left;
1339                     }
1340                 }
1341               else
1342                 tr->num_segments = 0xFF;
1343             }
1344
1345           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1346             {
1347               sr_localsid_trace_t *tr =
1348                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1349               tr->num_segments = 0;
1350               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1351                            sizeof (tr->localsid.as_u8));
1352               tr->behavior = ls1->behavior;
1353               if (ip1 == vlib_buffer_get_current (b1))
1354                 {
1355                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1356                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1357                     {
1358                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1359                       tr->num_segments =
1360                         sr1->length * 8 / sizeof (ip6_address_t);
1361                       tr->segments_left = sr1->segments_left;
1362                     }
1363                 }
1364               else
1365                 tr->num_segments = 0xFF;
1366             }
1367
1368           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1369             {
1370               sr_localsid_trace_t *tr =
1371                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1372               tr->num_segments = 0;
1373               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1374                            sizeof (tr->localsid.as_u8));
1375               tr->behavior = ls2->behavior;
1376               if (ip2 == vlib_buffer_get_current (b2))
1377                 {
1378                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1379                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1380                     {
1381                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1382                       tr->num_segments =
1383                         sr2->length * 8 / sizeof (ip6_address_t);
1384                       tr->segments_left = sr2->segments_left;
1385                     }
1386                 }
1387               else
1388                 tr->num_segments = 0xFF;
1389             }
1390
1391           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1392             {
1393               sr_localsid_trace_t *tr =
1394                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1395               tr->num_segments = 0;
1396               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1397                            sizeof (tr->localsid.as_u8));
1398               tr->behavior = ls3->behavior;
1399               if (ip3 == vlib_buffer_get_current (b3))
1400                 {
1401                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1402                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1403                     {
1404                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1405                       tr->num_segments =
1406                         sr3->length * 8 / sizeof (ip6_address_t);
1407                       tr->segments_left = sr3->segments_left;
1408                     }
1409                 }
1410               else
1411                 tr->num_segments = 0xFF;
1412             }
1413
1414           vlib_increment_combined_counter
1415             (((next0 ==
1416                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1417               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1418              1, vlib_buffer_length_in_chain (vm, b0));
1419
1420           vlib_increment_combined_counter
1421             (((next1 ==
1422                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1423               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1424              1, vlib_buffer_length_in_chain (vm, b1));
1425
1426           vlib_increment_combined_counter
1427             (((next2 ==
1428                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1429               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1430              1, vlib_buffer_length_in_chain (vm, b2));
1431
1432           vlib_increment_combined_counter
1433             (((next3 ==
1434                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1435               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1436              1, vlib_buffer_length_in_chain (vm, b3));
1437
1438           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1439                                            n_left_to_next, bi0, bi1, bi2, bi3,
1440                                            next0, next1, next2, next3);
1441         }
1442
1443       /* Single loop for potentially the last three packets */
1444       while (n_left_from > 0 && n_left_to_next > 0)
1445         {
1446           u32 bi0;
1447           vlib_buffer_t *b0;
1448           ip6_header_t *ip0 = 0;
1449           ip6_ext_header_t *prev0;
1450           ip6_sr_header_t *sr0;
1451           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1452           ip6_sr_localsid_t *ls0;
1453
1454           bi0 = from[0];
1455           to_next[0] = bi0;
1456           from += 1;
1457           to_next += 1;
1458           n_left_from -= 1;
1459           n_left_to_next -= 1;
1460
1461           b0 = vlib_get_buffer (vm, bi0);
1462           ip0 = vlib_buffer_get_current (b0);
1463           sr0 =
1464             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1465
1466           /* Lookup the SR End behavior based on IP DA (adj) */
1467           ls0 =
1468             pool_elt_at_index (sm->localsids,
1469                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1470
1471           /* SRH processing */
1472           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1473                               prev0);
1474
1475           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1476             {
1477               sr_localsid_trace_t *tr =
1478                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1479               tr->num_segments = 0;
1480               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1481                            sizeof (tr->localsid.as_u8));
1482               tr->behavior = ls0->behavior;
1483               if (ip0 == vlib_buffer_get_current (b0))
1484                 {
1485                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1486                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1487                     {
1488                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1489                       tr->num_segments =
1490                         sr0->length * 8 / sizeof (ip6_address_t);
1491                       tr->segments_left = sr0->segments_left;
1492                     }
1493                 }
1494               else
1495                 tr->num_segments = 0xFF;
1496             }
1497
1498           vlib_increment_combined_counter
1499             (((next0 ==
1500                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1501               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1502              1, vlib_buffer_length_in_chain (vm, b0));
1503
1504           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1505                                            n_left_to_next, bi0, next0);
1506         }
1507       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1508     }
1509   return from_frame->n_vectors;
1510 }
1511
1512 /* *INDENT-OFF* */
1513 VLIB_REGISTER_NODE (sr_localsid_node) = {
1514   .function = sr_localsid_fn,
1515   .name = "sr-localsid",
1516   .vector_size = sizeof (u32),
1517   .format_trace = format_sr_localsid_trace,
1518   .type = VLIB_NODE_TYPE_INTERNAL,
1519   .n_errors = SR_LOCALSID_N_ERROR,
1520   .error_strings = sr_localsid_error_strings,
1521   .n_next_nodes = SR_LOCALSID_N_NEXT,
1522   .next_nodes = {
1523 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1524     foreach_sr_localsid_next
1525 #undef _
1526   },
1527 };
1528 /* *INDENT-ON* */
1529
1530 static u8 *
1531 format_sr_dpo (u8 * s, va_list * args)
1532 {
1533   index_t index = va_arg (*args, index_t);
1534   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1535
1536   return (format (s, "SR: localsid_index:[%d]", index));
1537 }
1538
1539 const static dpo_vft_t sr_loc_vft = {
1540   .dv_lock = sr_dpo_lock,
1541   .dv_unlock = sr_dpo_unlock,
1542   .dv_format = format_sr_dpo,
1543 };
1544
1545 const static char *const sr_loc_ip6_nodes[] = {
1546   "sr-localsid",
1547   NULL,
1548 };
1549
1550 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1551   [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1552 };
1553
1554 const static char *const sr_loc_d_ip6_nodes[] = {
1555   "sr-localsid-d",
1556   NULL,
1557 };
1558
1559 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1560   [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1561 };
1562
1563
1564 /*************************** SR LocalSID plugins ******************************/
1565 /**
1566  * @brief SR LocalSID plugin registry
1567  */
1568 int
1569 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1570                                u8 * keyword_str, u8 * def_str,
1571                                u8 * params_str, u8 prefix_length,
1572                                dpo_type_t * dpo,
1573                                format_function_t * ls_format,
1574                                unformat_function_t * ls_unformat,
1575                                sr_plugin_callback_t * creation_fn,
1576                                sr_plugin_callback_t * removal_fn)
1577 {
1578   ip6_sr_main_t *sm = &sr_main;
1579   uword *p;
1580
1581   sr_localsid_fn_registration_t *plugin;
1582
1583   /* Did this function exist? If so update it */
1584   p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1585   if (p)
1586     {
1587       plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1588     }
1589   /* Else create a new one and set hash key */
1590   else
1591     {
1592       pool_get (sm->plugin_functions, plugin);
1593       hash_set_mem (sm->plugin_functions_by_key, fn_name,
1594                     plugin - sm->plugin_functions);
1595     }
1596
1597   clib_memset (plugin, 0, sizeof (*plugin));
1598
1599   plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1600   plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1601   plugin->prefix_length = prefix_length;
1602   plugin->ls_format = ls_format;
1603   plugin->ls_unformat = ls_unformat;
1604   plugin->creation = creation_fn;
1605   plugin->removal = removal_fn;
1606   clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1607   plugin->function_name = format (0, "%s%c", fn_name, 0);
1608   plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1609   plugin->def_str = format (0, "%s%c", def_str, 0);
1610   plugin->params_str = format (0, "%s%c", params_str, 0);
1611
1612   return plugin->sr_localsid_function_number;
1613 }
1614
1615 /**
1616  * @brief CLI function to 'show' all available SR LocalSID behaviors
1617  */
1618 static clib_error_t *
1619 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1620                                        unformat_input_t * input,
1621                                        vlib_cli_command_t * cmd)
1622 {
1623   ip6_sr_main_t *sm = &sr_main;
1624   sr_localsid_fn_registration_t *plugin;
1625   sr_localsid_fn_registration_t **plugins_vec = 0;
1626   int i;
1627
1628   vlib_cli_output (vm,
1629                    "SR LocalSIDs behaviors:\n-----------------------\n\n");
1630
1631   /* *INDENT-OFF* */
1632   pool_foreach (plugin, sm->plugin_functions,
1633     ({ vec_add1 (plugins_vec, plugin); }));
1634   /* *INDENT-ON* */
1635
1636   /* Print static behaviors */
1637   vlib_cli_output (vm, "Default behaviors:\n"
1638                    "\tEnd\t-> Endpoint.\n"
1639                    "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1640                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1641                    "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1642                    "\t\tParameters: '<fib_table>'\n"
1643                    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1644                    "\t\tParameters: '<iface>'\n"
1645                    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1646                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1647                    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1648                    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1649                    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1650                    "\t\tParameters: '<ip6_fib_table>'\n"
1651                    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1652                    "\t\tParameters: '<ip4_fib_table>'\n");
1653   vlib_cli_output (vm, "Plugin behaviors:\n");
1654   for (i = 0; i < vec_len (plugins_vec); i++)
1655     {
1656       plugin = plugins_vec[i];
1657       vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1658                        plugin->def_str);
1659       vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1660     }
1661   return 0;
1662 }
1663
1664 /* *INDENT-OFF* */
1665 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1666   .path = "show sr localsids behaviors",
1667   .short_help = "show sr localsids behaviors",
1668   .function = show_sr_localsid_behaviors_command_fn,
1669 };
1670 /* *INDENT-ON* */
1671
1672 /**
1673  * @brief SR LocalSID initialization
1674  */
1675 clib_error_t *
1676 sr_localsids_init (vlib_main_t * vm)
1677 {
1678   /* Init memory for function keys */
1679   ip6_sr_main_t *sm = &sr_main;
1680   mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1681               sizeof (ip6_address_t));
1682   /* Init SR behaviors DPO type */
1683   sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1684   /* Init SR behaviors DPO type */
1685   sr_localsid_d_dpo_type =
1686     dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1687   /* Init memory for localsid plugins */
1688   sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1689   return 0;
1690 }
1691
1692 VLIB_INIT_FUNCTION (sr_localsids_init);
1693 /*
1694 * fd.io coding-style-patch-verification: ON
1695 *
1696 * Local Variables:
1697 * eval: (c-set-style "gnu")
1698 * End:
1699 */