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, ls->vrf_index);
 508           break;
 509         case SR_BEHAVIOR_DX4:
 510           vlib_cli_output (vm,
 511                            "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
 512                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 513                            format_ip6_address, &ls->localsid,
 514                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 515                            format_ip4_address, &ls->next_hop.ip4);
 516           break;
 517         case SR_BEHAVIOR_DX6:
 518           vlib_cli_output (vm,
 519                            "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
 520                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 521                            format_ip6_address, &ls->localsid,
 522                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 523                            format_ip6_address, &ls->next_hop.ip6);
 524           break;
 525         case SR_BEHAVIOR_DX2:
 526           if (ls->vlan_index == (u32) ~ 0)
 527             vlib_cli_output (vm,
 528                              "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
 529                              "\n\tIface:  \t%U", format_ip6_address,
 530                              &ls->localsid, format_vnet_sw_if_index_name, vnm,
 531                              ls->sw_if_index);
 532           else
 533             vlib_cli_output (vm,
 534                              "Unsupported yet. (DX2 with egress VLAN rewrite)");
 535           break;
 536         case SR_BEHAVIOR_DT6:
 537           vlib_cli_output (vm,
 538                            "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
 539                            "\n\tTable: %u", format_ip6_address, &ls->localsid,
 540                            ls->vrf_index);
 541           break;
 542         case SR_BEHAVIOR_DT4:
 543           vlib_cli_output (vm,
 544                            "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
 545                            "\n\tTable: \t%u", format_ip6_address,
 546                            &ls->localsid, ls->vrf_index);
 547           break;
 548         default:
 549           if (ls->behavior >= SR_BEHAVIOR_LAST)
 550             {
 551               sr_localsid_fn_registration_t *plugin =
 552                 pool_elt_at_index (sm->plugin_functions,
 553                                    ls->behavior - SR_BEHAVIOR_LAST);
 554
 555               vlib_cli_output (vm, "\tAddress: \t%U\n"
 556                                "\tBehavior: \t%s (%s)\n\t%U",
 557                                format_ip6_address, &ls->localsid,
 558                                plugin->keyword_str, plugin->def_str,
 559                                plugin->ls_format, ls->plugin_mem);
 560             }
 561           else
 562             //Should never get here...
 563             vlib_cli_output (vm, "Internal error");
 564           break;
 565         }
 566       if (ls->end_psp)
 567         vlib_cli_output (vm, "\tPSP: \tTrue\n");
 568
 569       /* Print counters */
 570       vlib_counter_t valid, invalid;
 571       vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
 572       vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
 573       vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
 574                        valid.packets, valid.bytes);
 575       vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
 576                        invalid.packets, invalid.bytes);
 577       vlib_cli_output (vm, "--------------------");
 578     }
 579   return 0;
 580 }
 581
 582 /* *INDENT-OFF* */
 583 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
 584   .path = "show sr localsids",
 585   .short_help = "show sr localsids",
 586   .function = show_sr_localsid_command_fn,
 587 };
 588 /* *INDENT-ON* */
 589
 590 /**
 591  * @brief Function to 'clear' ALL SR localsid counters
 592  */
 593 static clib_error_t *
 594 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
 595                                        unformat_input_t * input,
 596                                        vlib_cli_command_t * cmd)
 597 {
 598   ip6_sr_main_t *sm = &sr_main;
 599
 600   vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
 601   vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
 602
 603   return 0;
 604 }
 605
 606 /* *INDENT-OFF* */
 607 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
 608   .path = "clear sr localsid-counters",
 609   .short_help = "clear sr localsid-counters",
 610   .function = clear_sr_localsid_counters_command_fn,
 611 };
 612 /* *INDENT-ON* */
 613
 614 /************************ SR LocalSID graphs node ****************************/
 615 /**
 616  * @brief SR localsid node trace
 617  */
 618 typedef struct
 619 {
 620   ip6_address_t localsid;
 621   u16 behavior;
 622   u8 sr[256];
 623   u8 num_segments;
 624   u8 segments_left;
 625 } sr_localsid_trace_t;
 626
 627 #define foreach_sr_localsid_error                                   \
 628 _(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
 629 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
 630 _(NO_SRH, "(SR-Error) No SR header")                                \
 631 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
 632 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
 633 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
 634
 635 typedef enum
 636 {
 637 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
 638   foreach_sr_localsid_error
 639 #undef _
 640     SR_LOCALSID_N_ERROR,
 641 } sr_localsid_error_t;
 642
 643 static char *sr_localsid_error_strings[] = {
 644 #define _(sym,string) string,
 645   foreach_sr_localsid_error
 646 #undef _
 647 };
 648
 649 #define foreach_sr_localsid_next        \
 650 _(ERROR, "error-drop")                  \
 651 _(IP6_LOOKUP, "ip6-lookup")             \
 652 _(IP4_LOOKUP, "ip4-lookup")             \
 653 _(IP6_REWRITE, "ip6-rewrite")           \
 654 _(IP4_REWRITE, "ip4-rewrite")           \
 655 _(INTERFACE_OUTPUT, "interface-output")
 656
 657 typedef enum
 658 {
 659 #define _(s,n) SR_LOCALSID_NEXT_##s,
 660   foreach_sr_localsid_next
 661 #undef _
 662     SR_LOCALSID_N_NEXT,
 663 } sr_localsid_next_t;
 664
 665 /**
 666  * @brief SR LocalSID graph node trace function
 667  *
 668  * @see sr_localsid
 669  */
 670 u8 *
 671 format_sr_localsid_trace (u8 * s, va_list * args)
 672 {
 673   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 674   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 675   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 676
 677   s =
 678     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
 679             &t->localsid);
 680   switch (t->behavior)
 681     {
 682     case SR_BEHAVIOR_END:
 683       s = format (s, "\tBehavior: End\n");
 684       break;
 685     case SR_BEHAVIOR_DX6:
 686       s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
 687       break;
 688     case SR_BEHAVIOR_DX4:
 689       s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
 690       break;
 691     case SR_BEHAVIOR_X:
 692       s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
 693       break;
 694     case SR_BEHAVIOR_T:
 695       s = format (s, "\tBehavior: IPv6 specific table lookup\n");
 696       break;
 697     case SR_BEHAVIOR_DT6:
 698       s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
 699       break;
 700     case SR_BEHAVIOR_DT4:
 701       s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
 702       break;
 703     case SR_BEHAVIOR_DX2:
 704       s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
 705       break;
 706     default:
 707       s = format (s, "\tBehavior: defined in plugin\n");        //TODO
 708       break;
 709     }
 710   if (t->num_segments != 0xFF)
 711     {
 712       if (t->num_segments > 0)
 713         {
 714           s = format (s, "\tSegments left: %d\n", t->segments_left);
 715           s = format (s, "\tSID list: [in ietf order]");
 716           int i = 0;
 717           for (i = 0; i < t->num_segments; i++)
 718             {
 719               s = format (s, "\n\t-> %U", format_ip6_address,
 720                           (ip6_address_t *) & t->sr[i *
 721                                                     sizeof (ip6_address_t)]);
 722             }
 723         }
 724     }
 725   return s;
 726 }
 727
 728 /**
 729  * @brief Function doing End processing.
 730  */
 731 static_always_inline void
 732 end_srh_processing (vlib_node_runtime_t * node,
 733                     vlib_buffer_t * b0,
 734                     ip6_header_t * ip0,
 735                     ip6_sr_header_t * sr0,
 736                     ip6_sr_localsid_t * ls0,
 737                     u32 * next0, u8 psp, ip6_ext_header_t * prev0)
 738 {
 739   ip6_address_t *new_dst0;
 740
 741   if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
 742     {
 743       if (sr0->segments_left == 1 && psp)
 744         {
 745           u32 new_l0, sr_len;
 746           u64 *copy_dst0, *copy_src0;
 747           u32 copy_len_u64s0 = 0;
 748
 749           ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
 750           ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
 751
 752           /* Remove the SRH taking care of the rest of IPv6 ext header */
 753           if (prev0)
 754             prev0->next_hdr = sr0->protocol;
 755           else
 756             ip0->protocol = sr0->protocol;
 757
 758           sr_len = ip6_ext_header_len (sr0);
 759           vlib_buffer_advance (b0, sr_len);
 760           new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
 761           ip0->payload_length = clib_host_to_net_u16 (new_l0);
 762           copy_src0 = (u64 *) ip0;
 763           copy_dst0 = copy_src0 + (sr0->length + 1);
 764           /* number of 8 octet units to copy
 765            * By default in absence of extension headers it is equal to length of ip6 header
 766            * With extension headers it number of 8 octet units of ext headers preceding
 767            * SR header
 768            */
 769           copy_len_u64s0 =
 770             (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
 771           copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
 772           copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
 773           copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
 774           copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
 775           copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
 776
 777           int i;
 778           for (i = copy_len_u64s0 - 1; i >= 0; i--)
 779             {
 780               copy_dst0[i] = copy_src0[i];
 781             }
 782
 783           if (ls0->behavior == SR_BEHAVIOR_X)
 784             {
 785               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 786               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 787             }
 788           else if (ls0->behavior == SR_BEHAVIOR_T)
 789             {
 790               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 791             }
 792         }
 793       else if (PREDICT_TRUE (sr0->segments_left > 0))
 794         {
 795           sr0->segments_left -= 1;
 796           new_dst0 = (ip6_address_t *) (sr0->segments);
 797           new_dst0 += sr0->segments_left;
 798           ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
 799           ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
 800
 801           if (ls0->behavior == SR_BEHAVIOR_X)
 802             {
 803               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 804               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 805             }
 806           else if (ls0->behavior == SR_BEHAVIOR_T)
 807             {
 808               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 809             }
 810         }
 811       else
 812         {
 813           *next0 = SR_LOCALSID_NEXT_ERROR;
 814           b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
 815         }
 816     }
 817   else
 818     {
 819       /* Error. Routing header of type != SR */
 820       *next0 = SR_LOCALSID_NEXT_ERROR;
 821       b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
 822     }
 823 }
 824
 825 /*
 826  * @brief Function doing SRH processing for D* variants
 827  */
 828 static_always_inline void
 829 end_decaps_srh_processing (vlib_node_runtime_t * node,
 830                            vlib_buffer_t * b0,
 831                            ip6_header_t * ip0,
 832                            ip6_sr_header_t * sr0,
 833                            ip6_sr_localsid_t * ls0, u32 * next0)
 834 {
 835   /* Compute the size of the IPv6 header with all Ext. headers */
 836   u8 next_proto;
 837   ip6_ext_header_t *next_ext_header;
 838   u16 total_size = 0;
 839
 840   next_proto = ip0->protocol;
 841   next_ext_header = (void *) (ip0 + 1);
 842   total_size = sizeof (ip6_header_t);
 843   while (ip6_ext_hdr (next_proto))
 844     {
 845       total_size += ip6_ext_header_len (next_ext_header);
 846       next_proto = next_ext_header->next_hdr;
 847       next_ext_header = ip6_ext_next_header (next_ext_header);
 848     }
 849
 850   /* Ensure this is the last segment. Otherwise drop. */
 851   if (sr0 && sr0->segments_left != 0)
 852     {
 853       *next0 = SR_LOCALSID_NEXT_ERROR;
 854       b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
 855       return;
 856     }
 857
 858   switch (next_proto)
 859     {
 860     case IP_PROTOCOL_IPV6:
 861       /* Encap-End IPv6. Pop outer IPv6 header. */
 862       if (ls0->behavior == SR_BEHAVIOR_DX6)
 863         {
 864           vlib_buffer_advance (b0, total_size);
 865           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 866           *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 867           return;
 868         }
 869       else if (ls0->behavior == SR_BEHAVIOR_DT6)
 870         {
 871           vlib_buffer_advance (b0, total_size);
 872           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 873           return;
 874         }
 875       break;
 876     case IP_PROTOCOL_IP_IN_IP:
 877       /* Encap-End IPv4. Pop outer IPv6 header */
 878       if (ls0->behavior == SR_BEHAVIOR_DX4)
 879         {
 880           vlib_buffer_advance (b0, total_size);
 881           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 882           *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
 883           return;
 884         }
 885       else if (ls0->behavior == SR_BEHAVIOR_DT4)
 886         {
 887           vlib_buffer_advance (b0, total_size);
 888           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 889           *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
 890           return;
 891         }
 892       break;
 893     case IP_PROTOCOL_IP6_NONXT:
 894       /* L2 encaps */
 895       if (ls0->behavior == SR_BEHAVIOR_DX2)
 896         {
 897           vlib_buffer_advance (b0, total_size);
 898           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
 899           *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
 900           return;
 901         }
 902       break;
 903     }
 904   *next0 = SR_LOCALSID_NEXT_ERROR;
 905   b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
 906   return;
 907 }
 908
 909 /**
 910  * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
 911  */
 912 static uword
 913 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 914                   vlib_frame_t * from_frame)
 915 {
 916   u32 n_left_from, next_index, *from, *to_next;
 917   ip6_sr_main_t *sm = &sr_main;
 918   from = vlib_frame_vector_args (from_frame);
 919   n_left_from = from_frame->n_vectors;
 920   next_index = node->cached_next_index;
 921   u32 thread_index = vm->thread_index;
 922
 923   while (n_left_from > 0)
 924     {
 925       u32 n_left_to_next;
 926       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 927
 928       /* Quad - Loop */
 929       while (n_left_from >= 8 && n_left_to_next >= 4)
 930         {
 931           u32 bi0, bi1, bi2, bi3;
 932           vlib_buffer_t *b0, *b1, *b2, *b3;
 933           ip6_header_t *ip0, *ip1, *ip2, *ip3;
 934           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
 935           u32 next0, next1, next2, next3;
 936           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
 937           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
 938
 939           /* Prefetch next iteration. */
 940           {
 941             vlib_buffer_t *p4, *p5, *p6, *p7;
 942
 943             p4 = vlib_get_buffer (vm, from[4]);
 944             p5 = vlib_get_buffer (vm, from[5]);
 945             p6 = vlib_get_buffer (vm, from[6]);
 946             p7 = vlib_get_buffer (vm, from[7]);
 947
 948             /* Prefetch the buffer header and packet for the N+4 loop iteration */
 949             vlib_prefetch_buffer_header (p4, LOAD);
 950             vlib_prefetch_buffer_header (p5, LOAD);
 951             vlib_prefetch_buffer_header (p6, LOAD);
 952             vlib_prefetch_buffer_header (p7, LOAD);
 953
 954             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
 955             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
 956             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
 957             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
 958           }
 959
 960           to_next[0] = bi0 = from[0];
 961           to_next[1] = bi1 = from[1];
 962           to_next[2] = bi2 = from[2];
 963           to_next[3] = bi3 = from[3];
 964           from += 4;
 965           to_next += 4;
 966           n_left_from -= 4;
 967           n_left_to_next -= 4;
 968
 969           b0 = vlib_get_buffer (vm, bi0);
 970           b1 = vlib_get_buffer (vm, bi1);
 971           b2 = vlib_get_buffer (vm, bi2);
 972           b3 = vlib_get_buffer (vm, bi3);
 973
 974           ls0 =
 975             pool_elt_at_index (sm->localsids,
 976                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 977           ls1 =
 978             pool_elt_at_index (sm->localsids,
 979                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
 980           ls2 =
 981             pool_elt_at_index (sm->localsids,
 982                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
 983           ls3 =
 984             pool_elt_at_index (sm->localsids,
 985                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
 986
 987           ip0 = vlib_buffer_get_current (b0);
 988           ip1 = vlib_buffer_get_current (b1);
 989           ip2 = vlib_buffer_get_current (b2);
 990           ip3 = vlib_buffer_get_current (b3);
 991
 992           sr0 =
 993             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
 994           sr1 =
 995             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, NULL);
 996           sr2 =
 997             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, NULL);
 998           sr3 =
 999             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, NULL);
1000
1001           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1002           end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
1003           end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
1004           end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
1005
1006           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1007             {
1008               sr_localsid_trace_t *tr =
1009                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1010               tr->num_segments = 0;
1011               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1012                            sizeof (tr->localsid.as_u8));
1013               tr->behavior = ls0->behavior;
1014               if (ip0 == vlib_buffer_get_current (b0))
1015                 {
1016                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1017                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1018                     {
1019                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1020                       tr->num_segments =
1021                         sr0->length * 8 / sizeof (ip6_address_t);
1022                       tr->segments_left = sr0->segments_left;
1023                     }
1024                 }
1025               else
1026                 tr->num_segments = 0xFF;
1027             }
1028
1029           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1030             {
1031               sr_localsid_trace_t *tr =
1032                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1033               tr->num_segments = 0;
1034               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1035                            sizeof (tr->localsid.as_u8));
1036               tr->behavior = ls1->behavior;
1037               if (ip1 == vlib_buffer_get_current (b1))
1038                 {
1039                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1040                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1041                     {
1042                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1043                       tr->num_segments =
1044                         sr1->length * 8 / sizeof (ip6_address_t);
1045                       tr->segments_left = sr1->segments_left;
1046                     }
1047                 }
1048               else
1049                 tr->num_segments = 0xFF;
1050             }
1051
1052           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1053             {
1054               sr_localsid_trace_t *tr =
1055                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1056               tr->num_segments = 0;
1057               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1058                            sizeof (tr->localsid.as_u8));
1059               tr->behavior = ls2->behavior;
1060               if (ip2 == vlib_buffer_get_current (b2))
1061                 {
1062                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1063                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1064                     {
1065                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1066                       tr->num_segments =
1067                         sr2->length * 8 / sizeof (ip6_address_t);
1068                       tr->segments_left = sr2->segments_left;
1069                     }
1070                 }
1071               else
1072                 tr->num_segments = 0xFF;
1073             }
1074
1075           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1076             {
1077               sr_localsid_trace_t *tr =
1078                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1079               tr->num_segments = 0;
1080               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1081                            sizeof (tr->localsid.as_u8));
1082               tr->behavior = ls3->behavior;
1083               if (ip3 == vlib_buffer_get_current (b3))
1084                 {
1085                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1086                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1087                     {
1088                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1089                       tr->num_segments =
1090                         sr3->length * 8 / sizeof (ip6_address_t);
1091                       tr->segments_left = sr3->segments_left;
1092                     }
1093                 }
1094               else
1095                 tr->num_segments = 0xFF;
1096             }
1097
1098           vlib_increment_combined_counter
1099             (((next0 ==
1100                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1101               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1102              1, vlib_buffer_length_in_chain (vm, b0));
1103
1104           vlib_increment_combined_counter
1105             (((next1 ==
1106                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1107               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1108              1, vlib_buffer_length_in_chain (vm, b1));
1109
1110           vlib_increment_combined_counter
1111             (((next2 ==
1112                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1113               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1114              1, vlib_buffer_length_in_chain (vm, b2));
1115
1116           vlib_increment_combined_counter
1117             (((next3 ==
1118                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1119               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1120              1, vlib_buffer_length_in_chain (vm, b3));
1121
1122           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1123                                            n_left_to_next, bi0, bi1, bi2, bi3,
1124                                            next0, next1, next2, next3);
1125         }
1126
1127       /* Single loop for potentially the last three packets */
1128       while (n_left_from > 0 && n_left_to_next > 0)
1129         {
1130           u32 bi0;
1131           vlib_buffer_t *b0;
1132           ip6_header_t *ip0;
1133           ip6_sr_header_t *sr0;
1134           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1135           ip6_sr_localsid_t *ls0;
1136
1137           bi0 = from[0];
1138           to_next[0] = bi0;
1139           from += 1;
1140           to_next += 1;
1141           n_left_from -= 1;
1142           n_left_to_next -= 1;
1143
1144           b0 = vlib_get_buffer (vm, bi0);
1145           ip0 = vlib_buffer_get_current (b0);
1146
1147           /* Lookup the SR End behavior based on IP DA (adj) */
1148           ls0 =
1149             pool_elt_at_index (sm->localsids,
1150                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1151
1152           /* Find SRH as well as previous header */
1153           sr0 =
1154             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1155
1156           /* SRH processing and End variants */
1157           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1158
1159           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1160             {
1161               sr_localsid_trace_t *tr =
1162                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1163               tr->num_segments = 0;
1164               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1165                            sizeof (tr->localsid.as_u8));
1166               tr->behavior = ls0->behavior;
1167               if (ip0 == vlib_buffer_get_current (b0))
1168                 {
1169                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1170                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1171                     {
1172                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1173                       tr->num_segments =
1174                         sr0->length * 8 / sizeof (ip6_address_t);
1175                       tr->segments_left = sr0->segments_left;
1176                     }
1177                 }
1178               else
1179                 tr->num_segments = 0xFF;
1180             }
1181
1182           /* Increase the counters */
1183           vlib_increment_combined_counter
1184             (((next0 ==
1185                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1186               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1187              1, vlib_buffer_length_in_chain (vm, b0));
1188
1189           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1190                                            n_left_to_next, bi0, next0);
1191         }
1192       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1193     }
1194   return from_frame->n_vectors;
1195 }
1196
1197 /* *INDENT-OFF* */
1198 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1199   .function = sr_localsid_d_fn,
1200   .name = "sr-localsid-d",
1201   .vector_size = sizeof (u32),
1202   .format_trace = format_sr_localsid_trace,
1203   .type = VLIB_NODE_TYPE_INTERNAL,
1204   .n_errors = SR_LOCALSID_N_ERROR,
1205   .error_strings = sr_localsid_error_strings,
1206   .n_next_nodes = SR_LOCALSID_N_NEXT,
1207   .next_nodes = {
1208 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1209     foreach_sr_localsid_next
1210 #undef _
1211   },
1212 };
1213 /* *INDENT-ON* */
1214
1215 /**
1216  * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1217  */
1218 static uword
1219 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1220                 vlib_frame_t * from_frame)
1221 {
1222   u32 n_left_from, next_index, *from, *to_next;
1223   ip6_sr_main_t *sm = &sr_main;
1224   from = vlib_frame_vector_args (from_frame);
1225   n_left_from = from_frame->n_vectors;
1226   next_index = node->cached_next_index;
1227   u32 thread_index = vm->thread_index;
1228
1229   while (n_left_from > 0)
1230     {
1231       u32 n_left_to_next;
1232       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1233
1234       /* Quad - Loop */
1235       while (n_left_from >= 8 && n_left_to_next >= 4)
1236         {
1237           u32 bi0, bi1, bi2, bi3;
1238           vlib_buffer_t *b0, *b1, *b2, *b3;
1239           ip6_header_t *ip0, *ip1, *ip2, *ip3;
1240           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1241           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1242           u32 next0, next1, next2, next3;
1243           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1244           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1245
1246           /* Prefetch next iteration. */
1247           {
1248             vlib_buffer_t *p4, *p5, *p6, *p7;
1249
1250             p4 = vlib_get_buffer (vm, from[4]);
1251             p5 = vlib_get_buffer (vm, from[5]);
1252             p6 = vlib_get_buffer (vm, from[6]);
1253             p7 = vlib_get_buffer (vm, from[7]);
1254
1255             /* Prefetch the buffer header and packet for the N+2 loop iteration */
1256             vlib_prefetch_buffer_header (p4, LOAD);
1257             vlib_prefetch_buffer_header (p5, LOAD);
1258             vlib_prefetch_buffer_header (p6, LOAD);
1259             vlib_prefetch_buffer_header (p7, LOAD);
1260
1261             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1262             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1263             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1264             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1265           }
1266
1267           to_next[0] = bi0 = from[0];
1268           to_next[1] = bi1 = from[1];
1269           to_next[2] = bi2 = from[2];
1270           to_next[3] = bi3 = from[3];
1271           from += 4;
1272           to_next += 4;
1273           n_left_from -= 4;
1274           n_left_to_next -= 4;
1275
1276           b0 = vlib_get_buffer (vm, bi0);
1277           b1 = vlib_get_buffer (vm, bi1);
1278           b2 = vlib_get_buffer (vm, bi2);
1279           b3 = vlib_get_buffer (vm, bi3);
1280
1281           ip0 = vlib_buffer_get_current (b0);
1282           ip1 = vlib_buffer_get_current (b1);
1283           ip2 = vlib_buffer_get_current (b2);
1284           ip3 = vlib_buffer_get_current (b3);
1285
1286           sr0 =
1287             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1288           sr1 =
1289             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, &prev1);
1290           sr2 =
1291             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, &prev2);
1292           sr3 =
1293             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, &prev3);
1294
1295           ls0 =
1296             pool_elt_at_index (sm->localsids,
1297                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1298           ls1 =
1299             pool_elt_at_index (sm->localsids,
1300                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
1301           ls2 =
1302             pool_elt_at_index (sm->localsids,
1303                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
1304           ls3 =
1305             pool_elt_at_index (sm->localsids,
1306                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1307
1308           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1309                               prev0);
1310           end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1311                               prev1);
1312           end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1313                               prev2);
1314           end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1315                               prev3);
1316
1317           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1318             {
1319               sr_localsid_trace_t *tr =
1320                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1321               tr->num_segments = 0;
1322               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1323                            sizeof (tr->localsid.as_u8));
1324               tr->behavior = ls0->behavior;
1325               if (ip0 == vlib_buffer_get_current (b0))
1326                 {
1327                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1328                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1329                     {
1330                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1331                       tr->num_segments =
1332                         sr0->length * 8 / sizeof (ip6_address_t);
1333                       tr->segments_left = sr0->segments_left;
1334                     }
1335                 }
1336               else
1337                 tr->num_segments = 0xFF;
1338             }
1339
1340           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1341             {
1342               sr_localsid_trace_t *tr =
1343                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1344               tr->num_segments = 0;
1345               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1346                            sizeof (tr->localsid.as_u8));
1347               tr->behavior = ls1->behavior;
1348               if (ip1 == vlib_buffer_get_current (b1))
1349                 {
1350                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1351                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1352                     {
1353                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1354                       tr->num_segments =
1355                         sr1->length * 8 / sizeof (ip6_address_t);
1356                       tr->segments_left = sr1->segments_left;
1357                     }
1358                 }
1359               else
1360                 tr->num_segments = 0xFF;
1361             }
1362
1363           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1364             {
1365               sr_localsid_trace_t *tr =
1366                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1367               tr->num_segments = 0;
1368               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1369                            sizeof (tr->localsid.as_u8));
1370               tr->behavior = ls2->behavior;
1371               if (ip2 == vlib_buffer_get_current (b2))
1372                 {
1373                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1374                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1375                     {
1376                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1377                       tr->num_segments =
1378                         sr2->length * 8 / sizeof (ip6_address_t);
1379                       tr->segments_left = sr2->segments_left;
1380                     }
1381                 }
1382               else
1383                 tr->num_segments = 0xFF;
1384             }
1385
1386           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1387             {
1388               sr_localsid_trace_t *tr =
1389                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1390               tr->num_segments = 0;
1391               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1392                            sizeof (tr->localsid.as_u8));
1393               tr->behavior = ls3->behavior;
1394               if (ip3 == vlib_buffer_get_current (b3))
1395                 {
1396                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1397                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1398                     {
1399                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1400                       tr->num_segments =
1401                         sr3->length * 8 / sizeof (ip6_address_t);
1402                       tr->segments_left = sr3->segments_left;
1403                     }
1404                 }
1405               else
1406                 tr->num_segments = 0xFF;
1407             }
1408
1409           vlib_increment_combined_counter
1410             (((next0 ==
1411                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1412               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1413              1, vlib_buffer_length_in_chain (vm, b0));
1414
1415           vlib_increment_combined_counter
1416             (((next1 ==
1417                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1418               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1419              1, vlib_buffer_length_in_chain (vm, b1));
1420
1421           vlib_increment_combined_counter
1422             (((next2 ==
1423                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1424               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1425              1, vlib_buffer_length_in_chain (vm, b2));
1426
1427           vlib_increment_combined_counter
1428             (((next3 ==
1429                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1430               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1431              1, vlib_buffer_length_in_chain (vm, b3));
1432
1433           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1434                                            n_left_to_next, bi0, bi1, bi2, bi3,
1435                                            next0, next1, next2, next3);
1436         }
1437
1438       /* Single loop for potentially the last three packets */
1439       while (n_left_from > 0 && n_left_to_next > 0)
1440         {
1441           u32 bi0;
1442           vlib_buffer_t *b0;
1443           ip6_header_t *ip0 = 0;
1444           ip6_ext_header_t *prev0;
1445           ip6_sr_header_t *sr0;
1446           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1447           ip6_sr_localsid_t *ls0;
1448
1449           bi0 = from[0];
1450           to_next[0] = bi0;
1451           from += 1;
1452           to_next += 1;
1453           n_left_from -= 1;
1454           n_left_to_next -= 1;
1455
1456           b0 = vlib_get_buffer (vm, bi0);
1457           ip0 = vlib_buffer_get_current (b0);
1458           sr0 =
1459             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1460
1461           /* Lookup the SR End behavior based on IP DA (adj) */
1462           ls0 =
1463             pool_elt_at_index (sm->localsids,
1464                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1465
1466           /* SRH processing */
1467           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1468                               prev0);
1469
1470           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1471             {
1472               sr_localsid_trace_t *tr =
1473                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1474               tr->num_segments = 0;
1475               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1476                            sizeof (tr->localsid.as_u8));
1477               tr->behavior = ls0->behavior;
1478               if (ip0 == vlib_buffer_get_current (b0))
1479                 {
1480                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1481                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1482                     {
1483                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1484                       tr->num_segments =
1485                         sr0->length * 8 / sizeof (ip6_address_t);
1486                       tr->segments_left = sr0->segments_left;
1487                     }
1488                 }
1489               else
1490                 tr->num_segments = 0xFF;
1491             }
1492
1493           vlib_increment_combined_counter
1494             (((next0 ==
1495                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1496               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1497              1, vlib_buffer_length_in_chain (vm, b0));
1498
1499           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1500                                            n_left_to_next, bi0, next0);
1501         }
1502       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1503     }
1504   return from_frame->n_vectors;
1505 }
1506
1507 /* *INDENT-OFF* */
1508 VLIB_REGISTER_NODE (sr_localsid_node) = {
1509   .function = sr_localsid_fn,
1510   .name = "sr-localsid",
1511   .vector_size = sizeof (u32),
1512   .format_trace = format_sr_localsid_trace,
1513   .type = VLIB_NODE_TYPE_INTERNAL,
1514   .n_errors = SR_LOCALSID_N_ERROR,
1515   .error_strings = sr_localsid_error_strings,
1516   .n_next_nodes = SR_LOCALSID_N_NEXT,
1517   .next_nodes = {
1518 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1519     foreach_sr_localsid_next
1520 #undef _
1521   },
1522 };
1523 /* *INDENT-ON* */
1524
1525 static u8 *
1526 format_sr_dpo (u8 * s, va_list * args)
1527 {
1528   index_t index = va_arg (*args, index_t);
1529   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1530
1531   return (format (s, "SR: localsid_index:[%d]", index));
1532 }
1533
1534 const static dpo_vft_t sr_loc_vft = {
1535   .dv_lock = sr_dpo_lock,
1536   .dv_unlock = sr_dpo_unlock,
1537   .dv_format = format_sr_dpo,
1538 };
1539
1540 const static char *const sr_loc_ip6_nodes[] = {
1541   "sr-localsid",
1542   NULL,
1543 };
1544
1545 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1546   [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1547 };
1548
1549 const static char *const sr_loc_d_ip6_nodes[] = {
1550   "sr-localsid-d",
1551   NULL,
1552 };
1553
1554 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1555   [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1556 };
1557
1558
1559 /*************************** SR LocalSID plugins ******************************/
1560 /**
1561  * @brief SR LocalSID plugin registry
1562  */
1563 int
1564 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1565                                u8 * keyword_str, u8 * def_str,
1566                                u8 * params_str, u8 prefix_length,
1567                                dpo_type_t * dpo,
1568                                format_function_t * ls_format,
1569                                unformat_function_t * ls_unformat,
1570                                sr_plugin_callback_t * creation_fn,
1571                                sr_plugin_callback_t * removal_fn)
1572 {
1573   ip6_sr_main_t *sm = &sr_main;
1574   uword *p;
1575
1576   sr_localsid_fn_registration_t *plugin;
1577
1578   /* Did this function exist? If so update it */
1579   p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1580   if (p)
1581     {
1582       plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1583     }
1584   /* Else create a new one and set hash key */
1585   else
1586     {
1587       pool_get (sm->plugin_functions, plugin);
1588       hash_set_mem (sm->plugin_functions_by_key, fn_name,
1589                     plugin - sm->plugin_functions);
1590     }
1591
1592   clib_memset (plugin, 0, sizeof (*plugin));
1593
1594   plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1595   plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1596   plugin->prefix_length = prefix_length;
1597   plugin->ls_format = ls_format;
1598   plugin->ls_unformat = ls_unformat;
1599   plugin->creation = creation_fn;
1600   plugin->removal = removal_fn;
1601   clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1602   plugin->function_name = format (0, "%s%c", fn_name, 0);
1603   plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1604   plugin->def_str = format (0, "%s%c", def_str, 0);
1605   plugin->params_str = format (0, "%s%c", params_str, 0);
1606
1607   return plugin->sr_localsid_function_number;
1608 }
1609
1610 /**
1611  * @brief CLI function to 'show' all available SR LocalSID behaviors
1612  */
1613 static clib_error_t *
1614 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1615                                        unformat_input_t * input,
1616                                        vlib_cli_command_t * cmd)
1617 {
1618   ip6_sr_main_t *sm = &sr_main;
1619   sr_localsid_fn_registration_t *plugin;
1620   sr_localsid_fn_registration_t **plugins_vec = 0;
1621   int i;
1622
1623   vlib_cli_output (vm,
1624                    "SR LocalSIDs behaviors:\n-----------------------\n\n");
1625
1626   /* *INDENT-OFF* */
1627   pool_foreach (plugin, sm->plugin_functions,
1628     ({ vec_add1 (plugins_vec, plugin); }));
1629   /* *INDENT-ON* */
1630
1631   /* Print static behaviors */
1632   vlib_cli_output (vm, "Default behaviors:\n"
1633                    "\tEnd\t-> Endpoint.\n"
1634                    "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1635                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1636                    "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1637                    "\t\tParameters: '<fib_table>'\n"
1638                    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1639                    "\t\tParameters: '<iface>'\n"
1640                    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1641                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1642                    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1643                    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1644                    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1645                    "\t\tParameters: '<ip6_fib_table>'\n"
1646                    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1647                    "\t\tParameters: '<ip4_fib_table>'\n");
1648   vlib_cli_output (vm, "Plugin behaviors:\n");
1649   for (i = 0; i < vec_len (plugins_vec); i++)
1650     {
1651       plugin = plugins_vec[i];
1652       vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1653                        plugin->def_str);
1654       vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1655     }
1656   return 0;
1657 }
1658
1659 /* *INDENT-OFF* */
1660 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1661   .path = "show sr localsids behaviors",
1662   .short_help = "show sr localsids behaviors",
1663   .function = show_sr_localsid_behaviors_command_fn,
1664 };
1665 /* *INDENT-ON* */
1666
1667 /**
1668  * @brief SR LocalSID initialization
1669  */
1670 clib_error_t *
1671 sr_localsids_init (vlib_main_t * vm)
1672 {
1673   /* Init memory for function keys */
1674   ip6_sr_main_t *sm = &sr_main;
1675   mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1676               sizeof (ip6_address_t));
1677   /* Init SR behaviors DPO type */
1678   sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1679   /* Init SR behaviors DPO type */
1680   sr_localsid_d_dpo_type =
1681     dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1682   /* Init memory for localsid plugins */
1683   sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1684   return 0;
1685 }
1686
1687 VLIB_INIT_FUNCTION (sr_localsids_init);
1688 /*
1689 * fd.io coding-style-patch-verification: ON
1690 *
1691 * Local Variables:
1692 * eval: (c-set-style "gnu")
1693 * End:
1694 */