src/vnet/srv6/sr_localsid.c

   1 /*
   2  * sr_localsid.c: ipv6 segment routing Endpoint behaviors
   3  *
   4  * Copyright (c) 2016 Cisco and/or its affiliates.
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 /**
  19  * @file
  20  * @brief Processing of packets with a SRH
  21  *
  22  * CLI to define new Segment Routing End processing functions.
  23  * Graph node to support such functions.
  24  *
  25  * Each function associates an SRv6 segment (IPv6 address) with an specific
  26  * Segment Routing function.
  27  *
  28  */
  29
  30 #include <vlib/vlib.h>
  31 #include <vnet/vnet.h>
  32 #include <vnet/srv6/sr.h>
  33 #include <vnet/ip/ip.h>
  34 #include <vnet/srv6/sr_packet.h>
  35 #include <vnet/ip/ip6_packet.h>
  36 #include <vnet/fib/ip6_fib.h>
  37 #include <vnet/dpo/dpo.h>
  38 #include <vnet/adj/adj.h>
  39
  40 #include <vppinfra/error.h>
  41 #include <vppinfra/elog.h>
  42
  43 /**
  44  * @brief Dynamically added SR localsid DPO type
  45  */
  46 static dpo_type_t sr_localsid_dpo_type;
  47 static dpo_type_t sr_localsid_d_dpo_type;
  48
  49 /**
  50  * @brief SR localsid add/del
  51  *
  52  * Function to add or delete SR LocalSIDs.
  53  *
  54  * @param is_del Boolean of whether its a delete instruction
  55  * @param localsid_addr IPv6 address of the localsid
  56  * @param is_decap Boolean of whether decapsulation is allowed in this function
  57  * @param behavior Type of behavior (function) for this localsid
  58  * @param sw_if_index Only for L2/L3 xconnect. OIF. In VRF variant the fib_table.
  59  * @param vlan_index Only for L2 xconnect. Outgoing VLAN tag.
  60  * @param fib_table  FIB table in which we should install the localsid entry
  61  * @param nh_addr Next Hop IPv4/IPv6 address. Only for L2/L3 xconnect.
  62  *
  63  * @return 0 on success, error otherwise.
  64  */
  65 int
  66 sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
  67                  u16 localsid_prefix_len, char end_psp, u8 behavior,
  68                  u32 sw_if_index, u32 vlan_index, u32 fib_table,
  69                  ip46_address_t * nh_addr, void *ls_plugin_mem)
  70 {
  71   ip6_sr_main_t *sm = &sr_main;
  72   uword *p;
  73   int rv;
  74   u8 pref_length = 128;
  75   sr_localsid_fn_registration_t *plugin = 0;
  76
  77   ip6_sr_localsid_t *ls = 0;
  78
  79   dpo_id_t dpo = DPO_INVALID;
  80
  81   /* Search for the item */
  82   p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
  83
  84   if (p)
  85     {
  86       if (is_del)
  87         {
  88           /* Retrieve localsid */
  89           ls = pool_elt_at_index (sm->localsids, p[0]);
  90           if (ls->behavior >= SR_BEHAVIOR_LAST)
  91             {
  92               plugin = pool_elt_at_index (sm->plugin_functions,
  93                                           ls->behavior - SR_BEHAVIOR_LAST);
  94               pref_length = plugin->prefix_length;
  95             }
  96
  97           if (localsid_prefix_len != 0)
  98             {
  99               pref_length = localsid_prefix_len;
 100             }
 101
 102           /* Delete FIB entry */
 103           fib_prefix_t pfx = {
 104             .fp_proto = FIB_PROTOCOL_IP6,
 105             .fp_len = pref_length,
 106             .fp_addr = {
 107                         .ip6 = *localsid_addr,
 108                         }
 109           };
 110
 111           fib_table_entry_delete (fib_table_find
 112                                   (FIB_PROTOCOL_IP6, fib_table), &pfx,
 113                                   FIB_SOURCE_SR);
 114
 115           /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
 116           if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
 117               || ls->behavior == SR_BEHAVIOR_DX4)
 118             adj_unlock (ls->nh_adj);
 119
 120           if (ls->behavior >= SR_BEHAVIOR_LAST)
 121             {
 122               /* Callback plugin removal function */
 123               rv = plugin->removal (ls);
 124             }
 125
 126           /* Delete localsid registry */
 127           pool_put (sm->localsids, ls);
 128           mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
 129           return 0;
 130         }
 131       else                      /* create with function already existing; complain */
 132         return -1;
 133     }
 134   else
 135     /* delete; localsid does not exist; complain */
 136   if (is_del)
 137     return -2;
 138
 139   if (behavior >= SR_BEHAVIOR_LAST)
 140     {
 141       sr_localsid_fn_registration_t *plugin = 0;
 142       plugin =
 143         pool_elt_at_index (sm->plugin_functions, behavior - SR_BEHAVIOR_LAST);
 144       pref_length = plugin->prefix_length;
 145     }
 146
 147   /* Check whether there exists a FIB entry with such address */
 148   fib_prefix_t pfx = {
 149     .fp_proto = FIB_PROTOCOL_IP6,
 150     .fp_len = pref_length,
 151   };
 152
 153   pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
 154   pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
 155
 156   if (pref_length != 0)
 157     {
 158       pfx.fp_len = pref_length;
 159     }
 160
 161   /* Lookup the FIB index associated to the table id provided */
 162   u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
 163   if (fib_index == ~0)
 164     return -3;
 165
 166   /* Lookup the localsid in such FIB table */
 167   fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
 168   if (FIB_NODE_INDEX_INVALID != fei)
 169     return -4;                  //There is an entry for such address (the localsid addr)
 170
 171   /* Create a new localsid registry */
 172   pool_get (sm->localsids, ls);
 173   clib_memset (ls, 0, sizeof (*ls));
 174
 175   clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
 176   ls->localsid_prefix_len = pref_length;
 177   ls->end_psp = end_psp;
 178   ls->behavior = behavior;
 179   ls->nh_adj = (u32) ~ 0;
 180   ls->fib_table = fib_table;
 181   switch (behavior)
 182     {
 183     case SR_BEHAVIOR_END:
 184       break;
 185     case SR_BEHAVIOR_X:
 186       ls->sw_if_index = sw_if_index;
 187       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 188       break;
 189     case SR_BEHAVIOR_T:
 190       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 191       break;
 192     case SR_BEHAVIOR_DX4:
 193       ls->sw_if_index = sw_if_index;
 194       clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
 195       break;
 196     case SR_BEHAVIOR_DX6:
 197       ls->sw_if_index = sw_if_index;
 198       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 199       break;
 200     case SR_BEHAVIOR_DT6:
 201       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 202       break;
 203     case SR_BEHAVIOR_DT4:
 204       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP4, sw_if_index);
 205       break;
 206     case SR_BEHAVIOR_DX2:
 207       ls->sw_if_index = sw_if_index;
 208       ls->vlan_index = vlan_index;
 209       break;
 210     }
 211
 212   /* Figure out the adjacency magic for Xconnect variants */
 213   if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
 214       || ls->behavior == SR_BEHAVIOR_DX6)
 215     {
 216       adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
 217
 218       /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
 219       if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
 220         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
 221                                             nh_addr, sw_if_index);
 222
 223       else if (ls->behavior == SR_BEHAVIOR_DX4)
 224         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
 225                                             nh_addr, sw_if_index);
 226
 227       /* Check for ADJ creation error. If so panic */
 228       if (nh_adj_index == ADJ_INDEX_INVALID)
 229         {
 230           pool_put (sm->localsids, ls);
 231           return -5;
 232         }
 233
 234       ls->nh_adj = nh_adj_index;
 235     }
 236
 237   /* Set DPO */
 238   if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X
 239       || ls->behavior == SR_BEHAVIOR_T)
 240     dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 241   else if (ls->behavior > SR_BEHAVIOR_D_FIRST
 242            && ls->behavior < SR_BEHAVIOR_LAST)
 243     dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 244   else if (ls->behavior >= SR_BEHAVIOR_LAST)
 245     {
 246       sr_localsid_fn_registration_t *plugin = 0;
 247       plugin = pool_elt_at_index (sm->plugin_functions,
 248                                   ls->behavior - SR_BEHAVIOR_LAST);
 249       /* Copy the unformat memory result */
 250       ls->plugin_mem = ls_plugin_mem;
 251       /* Callback plugin creation function */
 252       rv = plugin->creation (ls);
 253       if (rv)
 254         {
 255           pool_put (sm->localsids, ls);
 256           return -6;
 257         }
 258       dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
 259     }
 260
 261   /* Set hash key for searching localsid by address */
 262   mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
 263              NULL);
 264
 265   fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
 266                                    FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
 267   dpo_reset (&dpo);
 268
 269   /* Set counter to zero */
 270   vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
 271                                   ls - sm->localsids);
 272   vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
 273                                   ls - sm->localsids);
 274
 275   vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
 276                               ls - sm->localsids);
 277   vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
 278                               ls - sm->localsids);
 279
 280   return 0;
 281 }
 282
 283 /**
 284  * @brief SR LocalSID CLI function.
 285  *
 286  * @see sr_cli_localsid
 287  */
 288 static clib_error_t *
 289 sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 290                             vlib_cli_command_t * cmd)
 291 {
 292   vnet_main_t *vnm = vnet_get_main ();
 293   ip6_sr_main_t *sm = &sr_main;
 294   u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
 295   u16 prefix_len = 0;
 296   int is_del = 0;
 297   int end_psp = 0;
 298   ip6_address_t resulting_address;
 299   ip46_address_t next_hop;
 300   char address_set = 0;
 301   char behavior = 0;
 302   void *ls_plugin_mem = 0;
 303
 304   int rv;
 305
 306   clib_memset (&resulting_address, 0, sizeof (ip6_address_t));
 307   ip46_address_reset (&next_hop);
 308
 309   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 310     {
 311       if (unformat (input, "del"))
 312         is_del = 1;
 313       else if (!address_set
 314                && unformat (input, "address %U/%u", unformat_ip6_address,
 315                             &resulting_address, &prefix_len))
 316         address_set = 1;
 317       else if (!address_set
 318                && unformat (input, "address %U", unformat_ip6_address,
 319                             &resulting_address))
 320         address_set = 1;
 321       else if (!address_set
 322                && unformat (input, "addr %U", unformat_ip6_address,
 323                             &resulting_address))
 324         address_set = 1;
 325       else if (unformat (input, "fib-table %u", &fib_index));
 326       else if (vlan_index == (u32) ~ 0
 327                && unformat (input, "vlan %u", &vlan_index));
 328       else if (!behavior && unformat (input, "behavior"))
 329         {
 330           if (unformat (input, "end.x %U %U",
 331                         unformat_vnet_sw_interface, vnm, &sw_if_index,
 332                         unformat_ip6_address, &next_hop.ip6))
 333             behavior = SR_BEHAVIOR_X;
 334           else if (unformat (input, "end.t %u", &sw_if_index))
 335             behavior = SR_BEHAVIOR_T;
 336           else if (unformat (input, "end.dx6 %U %U",
 337                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 338                              unformat_ip6_address, &next_hop.ip6))
 339             behavior = SR_BEHAVIOR_DX6;
 340           else if (unformat (input, "end.dx4 %U %U",
 341                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 342                              unformat_ip4_address, &next_hop.ip4))
 343             behavior = SR_BEHAVIOR_DX4;
 344           else if (unformat (input, "end.dx2 %U",
 345                              unformat_vnet_sw_interface, vnm, &sw_if_index))
 346             behavior = SR_BEHAVIOR_DX2;
 347           else if (unformat (input, "end.dt6 %u", &sw_if_index))
 348             behavior = SR_BEHAVIOR_DT6;
 349           else if (unformat (input, "end.dt4 %u", &sw_if_index))
 350             behavior = SR_BEHAVIOR_DT4;
 351           else
 352             {
 353               /* Loop over all the plugin behavior format functions */
 354               sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
 355               sr_localsid_fn_registration_t **plugin_it = 0;
 356
 357               /* Create a vector out of the plugin pool as recommended */
 358               /* *INDENT-OFF* */
 359               pool_foreach (plugin, sm->plugin_functions,
 360                 {
 361                   vec_add1 (vec_plugins, plugin);
 362                 });
 363               /* *INDENT-ON* */
 364
 365               vec_foreach (plugin_it, vec_plugins)
 366               {
 367                 if (unformat
 368                     (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
 369                   {
 370                     behavior = (*plugin_it)->sr_localsid_function_number;
 371                     break;
 372                   }
 373               }
 374             }
 375
 376           if (!behavior)
 377             {
 378               if (unformat (input, "end"))
 379                 behavior = SR_BEHAVIOR_END;
 380               else
 381                 break;
 382             }
 383         }
 384       else if (!end_psp && unformat (input, "psp"))
 385         end_psp = 1;
 386       else
 387         break;
 388     }
 389
 390   if (!behavior && end_psp)
 391     behavior = SR_BEHAVIOR_END;
 392
 393   if (!address_set)
 394     return clib_error_return (0,
 395                               "Error: SRv6 LocalSID address is mandatory.");
 396   if (!is_del && !behavior)
 397     return clib_error_return (0,
 398                               "Error: SRv6 LocalSID behavior is mandatory.");
 399   if (vlan_index != (u32) ~ 0)
 400     return clib_error_return (0,
 401                               "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
 402   if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
 403     return clib_error_return (0,
 404                               "Error: SRv6 PSP only compatible with End and End.X");
 405
 406   rv =
 407     sr_cli_localsid (is_del, &resulting_address, prefix_len, end_psp,
 408                      behavior, sw_if_index, vlan_index, fib_index, &next_hop,
 409                      ls_plugin_mem);
 410
 411   switch (rv)
 412     {
 413     case 0:
 414       break;
 415     case 1:
 416       return 0;
 417     case -1:
 418       return clib_error_return (0,
 419                                 "Identical localsid already exists. Requested localsid not created.");
 420     case -2:
 421       return clib_error_return (0,
 422                                 "The requested localsid could not be deleted. SR localsid not found");
 423     case -3:
 424       return clib_error_return (0, "FIB table %u does not exist", fib_index);
 425     case -4:
 426       return clib_error_return (0, "There is already one FIB entry for the"
 427                                 "requested localsid non segment routing related");
 428     case -5:
 429       return clib_error_return (0,
 430                                 "Could not create ARP/ND entry for such next_hop. Internal error.");
 431     case -6:
 432       return clib_error_return (0,
 433                                 "Error on the plugin based localsid creation.");
 434     default:
 435       return clib_error_return (0, "BUG: sr localsid returns %d", rv);
 436     }
 437   return 0;
 438 }
 439
 440 /* *INDENT-OFF* */
 441 VLIB_CLI_COMMAND (sr_localsid_command, static) = {
 442   .path = "sr localsid",
 443   .short_help = "sr localsid (del) address XX:XX::YY:YY"
 444       "(fib-table 8) behavior STRING",
 445   .long_help =
 446     "Create SR LocalSID and binds it to a particular behavior\n"
 447     "Arguments:\n"
 448     "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
 449     "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
 450     "\tbehavior STRING            Specifies the behavior\n"
 451     "\n\tBehaviors:\n"
 452     "\tEnd\t-> Endpoint.\n"
 453     "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
 454     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 455     "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
 456     "\t\tParameters: '<iface>'\n"
 457     "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
 458     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 459     "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
 460     "\t\tParameters: '<iface> <ip4_next_hop>'\n"
 461     "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
 462     "\t\tParameters: '<ip6_fib_table>'\n"
 463     "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
 464     "\t\tParameters: '<ip4_fib_table>'\n",
 465   .function = sr_cli_localsid_command_fn,
 466 };
 467 /* *INDENT-ON* */
 468
 469 /**
 470  * @brief CLI function to 'show' all SR LocalSIDs on console.
 471  */
 472 static clib_error_t *
 473 show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 474                              vlib_cli_command_t * cmd)
 475 {
 476   vnet_main_t *vnm = vnet_get_main ();
 477   ip6_sr_main_t *sm = &sr_main;
 478   ip6_sr_localsid_t **localsid_list = 0;
 479   ip6_sr_localsid_t *ls;
 480   int i;
 481
 482   vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
 483   vlib_cli_output (vm, "=========================");
 484   /* *INDENT-OFF* */
 485   pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
 486   /* *INDENT-ON* */
 487   for (i = 0; i < vec_len (localsid_list); i++)
 488     {
 489       ls = localsid_list[i];
 490       switch (ls->behavior)
 491         {
 492         case SR_BEHAVIOR_END:
 493           vlib_cli_output (vm, "\tAddress: \t%U/%u\n\tBehavior: \tEnd",
 494                            format_ip6_address, &ls->localsid,
 495                            ls->localsid_prefix_len);
 496           break;
 497         case SR_BEHAVIOR_X:
 498           vlib_cli_output (vm,
 499                            "\tAddress: \t%U/%u\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
 500                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 501                            format_ip6_address, &ls->localsid,
 502                            ls->localsid_prefix_len,
 503                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 504                            format_ip6_address, &ls->next_hop.ip6);
 505           break;
 506         case SR_BEHAVIOR_T:
 507           vlib_cli_output (vm,
 508                            "\tAddress: \t%U/%u\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
 509                            "\n\tTable:  \t%u",
 510                            format_ip6_address, &ls->localsid,
 511                            ls->localsid_prefix_len,
 512                            fib_table_get_table_id (ls->vrf_index,
 513                                                    FIB_PROTOCOL_IP6));
 514           break;
 515         case SR_BEHAVIOR_DX4:
 516           vlib_cli_output (vm,
 517                            "\tAddress: \t%U/%u\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
 518                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 519                            format_ip6_address, &ls->localsid,
 520                            ls->localsid_prefix_len,
 521                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 522                            format_ip4_address, &ls->next_hop.ip4);
 523           break;
 524         case SR_BEHAVIOR_DX6:
 525           vlib_cli_output (vm,
 526                            "\tAddress: \t%U/%u\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
 527                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 528                            format_ip6_address, &ls->localsid,
 529                            ls->localsid_prefix_len,
 530                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 531                            format_ip6_address, &ls->next_hop.ip6);
 532           break;
 533         case SR_BEHAVIOR_DX2:
 534           if (ls->vlan_index == (u32) ~ 0)
 535             vlib_cli_output (vm,
 536                              "\tAddress: \t%U/%u\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
 537                              "\n\tIface:  \t%U", format_ip6_address,
 538                              &ls->localsid, ls->localsid_prefix_len,
 539                              format_vnet_sw_if_index_name, vnm,
 540                              ls->sw_if_index);
 541           else
 542             vlib_cli_output (vm,
 543                              "Unsupported yet. (DX2 with egress VLAN rewrite)");
 544           break;
 545         case SR_BEHAVIOR_DT6:
 546           vlib_cli_output (vm,
 547                            "\tAddress: \t%U/%u\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
 548                            "\n\tTable: %u", format_ip6_address, &ls->localsid,
 549                            ls->localsid_prefix_len,
 550                            fib_table_get_table_id (ls->vrf_index,
 551                                                    FIB_PROTOCOL_IP6));
 552           break;
 553         case SR_BEHAVIOR_DT4:
 554           vlib_cli_output (vm,
 555                            "\tAddress: \t%U/%u\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
 556                            "\n\tTable: \t%u", format_ip6_address,
 557                            &ls->localsid, ls->localsid_prefix_len,
 558                            fib_table_get_table_id (ls->vrf_index,
 559                                                    FIB_PROTOCOL_IP4));
 560           break;
 561         default:
 562           if (ls->behavior >= SR_BEHAVIOR_LAST)
 563             {
 564               sr_localsid_fn_registration_t *plugin =
 565                 pool_elt_at_index (sm->plugin_functions,
 566                                    ls->behavior - SR_BEHAVIOR_LAST);
 567
 568               vlib_cli_output (vm, "\tAddress: \t%U/%u\n"
 569                                "\tBehavior: \t%s (%s)\n\t%U",
 570                                format_ip6_address, &ls->localsid,
 571                                ls->localsid_prefix_len, plugin->keyword_str,
 572                                plugin->def_str, plugin->ls_format,
 573                                ls->plugin_mem);
 574             }
 575           else
 576             //Should never get here...
 577             vlib_cli_output (vm, "Internal error");
 578           break;
 579         }
 580       if (ls->end_psp)
 581         vlib_cli_output (vm, "\tPSP: \tTrue\n");
 582
 583       /* Print counters */
 584       vlib_counter_t valid, invalid;
 585       vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
 586       vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
 587       vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
 588                        valid.packets, valid.bytes);
 589       vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
 590                        invalid.packets, invalid.bytes);
 591       vlib_cli_output (vm, "--------------------");
 592     }
 593   return 0;
 594 }
 595
 596 /* *INDENT-OFF* */
 597 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
 598   .path = "show sr localsids",
 599   .short_help = "show sr localsids",
 600   .function = show_sr_localsid_command_fn,
 601 };
 602 /* *INDENT-ON* */
 603
 604 /**
 605  * @brief Function to 'clear' ALL SR localsid counters
 606  */
 607 static clib_error_t *
 608 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
 609                                        unformat_input_t * input,
 610                                        vlib_cli_command_t * cmd)
 611 {
 612   ip6_sr_main_t *sm = &sr_main;
 613
 614   vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
 615   vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
 616
 617   return 0;
 618 }
 619
 620 /* *INDENT-OFF* */
 621 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
 622   .path = "clear sr localsid-counters",
 623   .short_help = "clear sr localsid-counters",
 624   .function = clear_sr_localsid_counters_command_fn,
 625 };
 626 /* *INDENT-ON* */
 627
 628 /************************ SR LocalSID graphs node ****************************/
 629 /**
 630  * @brief SR localsid node trace
 631  */
 632 typedef struct
 633 {
 634   ip6_address_t localsid;
 635   u16 behavior;
 636   u8 sr[256];
 637   u8 num_segments;
 638   u8 segments_left;
 639 } sr_localsid_trace_t;
 640
 641 #define foreach_sr_localsid_error                                   \
 642 _(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
 643 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
 644 _(NO_SRH, "(SR-Error) No SR header")                                \
 645 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
 646 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
 647 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
 648
 649 typedef enum
 650 {
 651 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
 652   foreach_sr_localsid_error
 653 #undef _
 654     SR_LOCALSID_N_ERROR,
 655 } sr_localsid_error_t;
 656
 657 static char *sr_localsid_error_strings[] = {
 658 #define _(sym,string) string,
 659   foreach_sr_localsid_error
 660 #undef _
 661 };
 662
 663 #define foreach_sr_localsid_next        \
 664 _(ERROR, "error-drop")                  \
 665 _(IP6_LOOKUP, "ip6-lookup")             \
 666 _(IP4_LOOKUP, "ip4-lookup")             \
 667 _(IP6_REWRITE, "ip6-rewrite")           \
 668 _(IP4_REWRITE, "ip4-rewrite")           \
 669 _(INTERFACE_OUTPUT, "interface-output")
 670
 671 typedef enum
 672 {
 673 #define _(s,n) SR_LOCALSID_NEXT_##s,
 674   foreach_sr_localsid_next
 675 #undef _
 676     SR_LOCALSID_N_NEXT,
 677 } sr_localsid_next_t;
 678
 679 /**
 680  * @brief SR LocalSID graph node trace function
 681  *
 682  * @see sr_localsid
 683  */
 684 u8 *
 685 format_sr_localsid_trace (u8 * s, va_list * args)
 686 {
 687   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 688   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 689   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 690
 691   s =
 692     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
 693             &t->localsid);
 694   switch (t->behavior)
 695     {
 696     case SR_BEHAVIOR_END:
 697       s = format (s, "\tBehavior: End\n");
 698       break;
 699     case SR_BEHAVIOR_DX6:
 700       s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
 701       break;
 702     case SR_BEHAVIOR_DX4:
 703       s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
 704       break;
 705     case SR_BEHAVIOR_X:
 706       s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
 707       break;
 708     case SR_BEHAVIOR_T:
 709       s = format (s, "\tBehavior: IPv6 specific table lookup\n");
 710       break;
 711     case SR_BEHAVIOR_DT6:
 712       s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
 713       break;
 714     case SR_BEHAVIOR_DT4:
 715       s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
 716       break;
 717     case SR_BEHAVIOR_DX2:
 718       s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
 719       break;
 720     default:
 721       s = format (s, "\tBehavior: defined in plugin\n");        //TODO
 722       break;
 723     }
 724   if (t->num_segments != 0xFF)
 725     {
 726       if (t->num_segments > 0)
 727         {
 728           s = format (s, "\tSegments left: %d\n", t->segments_left);
 729           s = format (s, "\tSID list: [in ietf order]");
 730           int i = 0;
 731           for (i = 0; i < t->num_segments; i++)
 732             {
 733               s = format (s, "\n\t-> %U", format_ip6_address,
 734                           (ip6_address_t *) & t->sr[i *
 735                                                     sizeof (ip6_address_t)]);
 736             }
 737         }
 738     }
 739   return s;
 740 }
 741
 742 /**
 743  * @brief Function doing End processing.
 744  */
 745 static_always_inline void
 746 end_srh_processing (vlib_node_runtime_t * node,
 747                     vlib_buffer_t * b0,
 748                     ip6_header_t * ip0,
 749                     ip6_sr_header_t * sr0,
 750                     ip6_sr_localsid_t * ls0,
 751                     u32 * next0, u8 psp, ip6_ext_header_t * prev0)
 752 {
 753   ip6_address_t *new_dst0;
 754
 755   if (PREDICT_TRUE (sr0 && sr0->type == ROUTING_HEADER_TYPE_SR))
 756     {
 757       if (sr0->segments_left == 1 && psp)
 758         {
 759           u32 new_l0, sr_len;
 760           u64 *copy_dst0, *copy_src0;
 761           u32 copy_len_u64s0 = 0;
 762
 763           ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
 764           ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
 765
 766           /* Remove the SRH taking care of the rest of IPv6 ext header */
 767           if (prev0)
 768             prev0->next_hdr = sr0->protocol;
 769           else
 770             ip0->protocol = sr0->protocol;
 771
 772           sr_len = ip6_ext_header_len (sr0);
 773           vlib_buffer_advance (b0, sr_len);
 774           new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
 775           ip0->payload_length = clib_host_to_net_u16 (new_l0);
 776           copy_src0 = (u64 *) ip0;
 777           copy_dst0 = copy_src0 + (sr0->length + 1);
 778           /* number of 8 octet units to copy
 779            * By default in absence of extension headers it is equal to length of ip6 header
 780            * With extension headers it number of 8 octet units of ext headers preceding
 781            * SR header
 782            */
 783           copy_len_u64s0 =
 784             (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
 785           copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
 786           copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
 787           copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
 788           copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
 789           copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
 790
 791           int i;
 792           for (i = copy_len_u64s0 - 1; i >= 0; i--)
 793             {
 794               copy_dst0[i] = copy_src0[i];
 795             }
 796
 797           if (ls0->behavior == SR_BEHAVIOR_X)
 798             {
 799               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 800               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 801             }
 802           else if (ls0->behavior == SR_BEHAVIOR_T)
 803             {
 804               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 805             }
 806         }
 807       else if (PREDICT_TRUE (sr0->segments_left > 0))
 808         {
 809           sr0->segments_left -= 1;
 810           new_dst0 = (ip6_address_t *) (sr0->segments);
 811           new_dst0 += sr0->segments_left;
 812           ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
 813           ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
 814
 815           if (ls0->behavior == SR_BEHAVIOR_X)
 816             {
 817               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 818               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 819             }
 820           else if (ls0->behavior == SR_BEHAVIOR_T)
 821             {
 822               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 823             }
 824         }
 825       else
 826         {
 827           *next0 = SR_LOCALSID_NEXT_ERROR;
 828           b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
 829         }
 830     }
 831   else
 832     {
 833       /* Error. Routing header of type != SR */
 834       *next0 = SR_LOCALSID_NEXT_ERROR;
 835       b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
 836     }
 837 }
 838
 839 /*
 840  * @brief Function doing SRH processing for D* variants
 841  */
 842 static_always_inline void
 843 end_decaps_srh_processing (vlib_node_runtime_t * node,
 844                            vlib_buffer_t * b0,
 845                            ip6_header_t * ip0,
 846                            ip6_sr_header_t * sr0,
 847                            ip6_sr_localsid_t * ls0, u32 * next0)
 848 {
 849   /* Compute the size of the IPv6 header with all Ext. headers */
 850   u8 next_proto;
 851   ip6_ext_header_t *next_ext_header;
 852   u16 total_size = 0;
 853
 854   next_proto = ip0->protocol;
 855   next_ext_header = (void *) (ip0 + 1);
 856   total_size = sizeof (ip6_header_t);
 857   while (ip6_ext_hdr (next_proto))
 858     {
 859       total_size += ip6_ext_header_len (next_ext_header);
 860       next_proto = next_ext_header->next_hdr;
 861       next_ext_header = ip6_ext_next_header (next_ext_header);
 862     }
 863
 864   /* Ensure this is the last segment. Otherwise drop. */
 865   if (sr0 && sr0->segments_left != 0)
 866     {
 867       *next0 = SR_LOCALSID_NEXT_ERROR;
 868       b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
 869       return;
 870     }
 871
 872   switch (next_proto)
 873     {
 874     case IP_PROTOCOL_IPV6:
 875       /* Encap-End IPv6. Pop outer IPv6 header. */
 876       if (ls0->behavior == SR_BEHAVIOR_DX6)
 877         {
 878           vlib_buffer_advance (b0, total_size);
 879           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 880           *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 881           return;
 882         }
 883       else if (ls0->behavior == SR_BEHAVIOR_DT6)
 884         {
 885           vlib_buffer_advance (b0, total_size);
 886           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 887           return;
 888         }
 889       break;
 890     case IP_PROTOCOL_IP_IN_IP:
 891       /* Encap-End IPv4. Pop outer IPv6 header */
 892       if (ls0->behavior == SR_BEHAVIOR_DX4)
 893         {
 894           vlib_buffer_advance (b0, total_size);
 895           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 896           *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
 897           return;
 898         }
 899       else if (ls0->behavior == SR_BEHAVIOR_DT4)
 900         {
 901           vlib_buffer_advance (b0, total_size);
 902           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 903           *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
 904           return;
 905         }
 906       break;
 907     case IP_PROTOCOL_IP6_ETHERNET:
 908       /* L2 encaps */
 909       if (ls0->behavior == SR_BEHAVIOR_DX2)
 910         {
 911           vlib_buffer_advance (b0, total_size);
 912           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
 913           *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
 914           return;
 915         }
 916       break;
 917     }
 918   *next0 = SR_LOCALSID_NEXT_ERROR;
 919   b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
 920   return;
 921 }
 922
 923 /**
 924  * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
 925  */
 926 static uword
 927 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 928                   vlib_frame_t * from_frame)
 929 {
 930   u32 n_left_from, next_index, *from, *to_next;
 931   ip6_sr_main_t *sm = &sr_main;
 932   from = vlib_frame_vector_args (from_frame);
 933   n_left_from = from_frame->n_vectors;
 934   next_index = node->cached_next_index;
 935   u32 thread_index = vm->thread_index;
 936
 937   while (n_left_from > 0)
 938     {
 939       u32 n_left_to_next;
 940       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 941
 942       /* Quad - Loop */
 943       while (n_left_from >= 8 && n_left_to_next >= 4)
 944         {
 945           u32 bi0, bi1, bi2, bi3;
 946           vlib_buffer_t *b0, *b1, *b2, *b3;
 947           ip6_header_t *ip0, *ip1, *ip2, *ip3;
 948           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
 949           u32 next0, next1, next2, next3;
 950           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
 951           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
 952
 953           /* Prefetch next iteration. */
 954           {
 955             vlib_buffer_t *p4, *p5, *p6, *p7;
 956
 957             p4 = vlib_get_buffer (vm, from[4]);
 958             p5 = vlib_get_buffer (vm, from[5]);
 959             p6 = vlib_get_buffer (vm, from[6]);
 960             p7 = vlib_get_buffer (vm, from[7]);
 961
 962             /* Prefetch the buffer header and packet for the N+4 loop iteration */
 963             vlib_prefetch_buffer_header (p4, LOAD);
 964             vlib_prefetch_buffer_header (p5, LOAD);
 965             vlib_prefetch_buffer_header (p6, LOAD);
 966             vlib_prefetch_buffer_header (p7, LOAD);
 967
 968             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
 969             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
 970             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
 971             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
 972           }
 973
 974           to_next[0] = bi0 = from[0];
 975           to_next[1] = bi1 = from[1];
 976           to_next[2] = bi2 = from[2];
 977           to_next[3] = bi3 = from[3];
 978           from += 4;
 979           to_next += 4;
 980           n_left_from -= 4;
 981           n_left_to_next -= 4;
 982
 983           b0 = vlib_get_buffer (vm, bi0);
 984           b1 = vlib_get_buffer (vm, bi1);
 985           b2 = vlib_get_buffer (vm, bi2);
 986           b3 = vlib_get_buffer (vm, bi3);
 987
 988           ls0 =
 989             pool_elt_at_index (sm->localsids,
 990                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 991           ls1 =
 992             pool_elt_at_index (sm->localsids,
 993                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
 994           ls2 =
 995             pool_elt_at_index (sm->localsids,
 996                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
 997           ls3 =
 998             pool_elt_at_index (sm->localsids,
 999                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1000
1001           ip0 = vlib_buffer_get_current (b0);
1002           ip1 = vlib_buffer_get_current (b1);
1003           ip2 = vlib_buffer_get_current (b2);
1004           ip3 = vlib_buffer_get_current (b3);
1005
1006           sr0 =
1007             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1008           sr1 =
1009             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, NULL);
1010           sr2 =
1011             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, NULL);
1012           sr3 =
1013             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, NULL);
1014
1015           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1016           end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
1017           end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
1018           end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
1019
1020           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1021             {
1022               sr_localsid_trace_t *tr =
1023                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1024               tr->num_segments = 0;
1025               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1026                            sizeof (tr->localsid.as_u8));
1027               tr->behavior = ls0->behavior;
1028               if (ip0 == vlib_buffer_get_current (b0))
1029                 {
1030                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1031                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1032                     {
1033                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1034                       tr->num_segments =
1035                         sr0->length * 8 / sizeof (ip6_address_t);
1036                       tr->segments_left = sr0->segments_left;
1037                     }
1038                 }
1039               else
1040                 tr->num_segments = 0xFF;
1041             }
1042
1043           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1044             {
1045               sr_localsid_trace_t *tr =
1046                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1047               tr->num_segments = 0;
1048               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1049                            sizeof (tr->localsid.as_u8));
1050               tr->behavior = ls1->behavior;
1051               if (ip1 == vlib_buffer_get_current (b1))
1052                 {
1053                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1054                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1055                     {
1056                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1057                       tr->num_segments =
1058                         sr1->length * 8 / sizeof (ip6_address_t);
1059                       tr->segments_left = sr1->segments_left;
1060                     }
1061                 }
1062               else
1063                 tr->num_segments = 0xFF;
1064             }
1065
1066           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1067             {
1068               sr_localsid_trace_t *tr =
1069                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1070               tr->num_segments = 0;
1071               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1072                            sizeof (tr->localsid.as_u8));
1073               tr->behavior = ls2->behavior;
1074               if (ip2 == vlib_buffer_get_current (b2))
1075                 {
1076                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1077                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1078                     {
1079                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1080                       tr->num_segments =
1081                         sr2->length * 8 / sizeof (ip6_address_t);
1082                       tr->segments_left = sr2->segments_left;
1083                     }
1084                 }
1085               else
1086                 tr->num_segments = 0xFF;
1087             }
1088
1089           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1090             {
1091               sr_localsid_trace_t *tr =
1092                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1093               tr->num_segments = 0;
1094               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1095                            sizeof (tr->localsid.as_u8));
1096               tr->behavior = ls3->behavior;
1097               if (ip3 == vlib_buffer_get_current (b3))
1098                 {
1099                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1100                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1101                     {
1102                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1103                       tr->num_segments =
1104                         sr3->length * 8 / sizeof (ip6_address_t);
1105                       tr->segments_left = sr3->segments_left;
1106                     }
1107                 }
1108               else
1109                 tr->num_segments = 0xFF;
1110             }
1111
1112           vlib_increment_combined_counter
1113             (((next0 ==
1114                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1115               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1116              1, vlib_buffer_length_in_chain (vm, b0));
1117
1118           vlib_increment_combined_counter
1119             (((next1 ==
1120                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1121               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1122              1, vlib_buffer_length_in_chain (vm, b1));
1123
1124           vlib_increment_combined_counter
1125             (((next2 ==
1126                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1127               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1128              1, vlib_buffer_length_in_chain (vm, b2));
1129
1130           vlib_increment_combined_counter
1131             (((next3 ==
1132                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1133               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1134              1, vlib_buffer_length_in_chain (vm, b3));
1135
1136           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1137                                            n_left_to_next, bi0, bi1, bi2, bi3,
1138                                            next0, next1, next2, next3);
1139         }
1140
1141       /* Single loop for potentially the last three packets */
1142       while (n_left_from > 0 && n_left_to_next > 0)
1143         {
1144           u32 bi0;
1145           vlib_buffer_t *b0;
1146           ip6_header_t *ip0;
1147           ip6_sr_header_t *sr0;
1148           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1149           ip6_sr_localsid_t *ls0;
1150
1151           bi0 = from[0];
1152           to_next[0] = bi0;
1153           from += 1;
1154           to_next += 1;
1155           n_left_from -= 1;
1156           n_left_to_next -= 1;
1157
1158           b0 = vlib_get_buffer (vm, bi0);
1159           ip0 = vlib_buffer_get_current (b0);
1160
1161           /* Lookup the SR End behavior based on IP DA (adj) */
1162           ls0 =
1163             pool_elt_at_index (sm->localsids,
1164                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1165
1166           /* Find SRH as well as previous header */
1167           sr0 =
1168             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1169
1170           /* SRH processing and End variants */
1171           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1172
1173           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1174             {
1175               sr_localsid_trace_t *tr =
1176                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1177               tr->num_segments = 0;
1178               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1179                            sizeof (tr->localsid.as_u8));
1180               tr->behavior = ls0->behavior;
1181               if (ip0 == vlib_buffer_get_current (b0))
1182                 {
1183                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1184                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1185                     {
1186                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1187                       tr->num_segments =
1188                         sr0->length * 8 / sizeof (ip6_address_t);
1189                       tr->segments_left = sr0->segments_left;
1190                     }
1191                 }
1192               else
1193                 tr->num_segments = 0xFF;
1194             }
1195
1196           /* Increase the counters */
1197           vlib_increment_combined_counter
1198             (((next0 ==
1199                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1200               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1201              1, vlib_buffer_length_in_chain (vm, b0));
1202
1203           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1204                                            n_left_to_next, bi0, next0);
1205         }
1206       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1207     }
1208   return from_frame->n_vectors;
1209 }
1210
1211 /* *INDENT-OFF* */
1212 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1213   .function = sr_localsid_d_fn,
1214   .name = "sr-localsid-d",
1215   .vector_size = sizeof (u32),
1216   .format_trace = format_sr_localsid_trace,
1217   .type = VLIB_NODE_TYPE_INTERNAL,
1218   .n_errors = SR_LOCALSID_N_ERROR,
1219   .error_strings = sr_localsid_error_strings,
1220   .n_next_nodes = SR_LOCALSID_N_NEXT,
1221   .next_nodes = {
1222 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1223     foreach_sr_localsid_next
1224 #undef _
1225   },
1226 };
1227 /* *INDENT-ON* */
1228
1229 /**
1230  * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1231  */
1232 static uword
1233 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1234                 vlib_frame_t * from_frame)
1235 {
1236   u32 n_left_from, next_index, *from, *to_next;
1237   ip6_sr_main_t *sm = &sr_main;
1238   from = vlib_frame_vector_args (from_frame);
1239   n_left_from = from_frame->n_vectors;
1240   next_index = node->cached_next_index;
1241   u32 thread_index = vm->thread_index;
1242
1243   while (n_left_from > 0)
1244     {
1245       u32 n_left_to_next;
1246       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1247
1248       /* Quad - Loop */
1249       while (n_left_from >= 8 && n_left_to_next >= 4)
1250         {
1251           u32 bi0, bi1, bi2, bi3;
1252           vlib_buffer_t *b0, *b1, *b2, *b3;
1253           ip6_header_t *ip0, *ip1, *ip2, *ip3;
1254           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1255           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1256           u32 next0, next1, next2, next3;
1257           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1258           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1259
1260           /* Prefetch next iteration. */
1261           {
1262             vlib_buffer_t *p4, *p5, *p6, *p7;
1263
1264             p4 = vlib_get_buffer (vm, from[4]);
1265             p5 = vlib_get_buffer (vm, from[5]);
1266             p6 = vlib_get_buffer (vm, from[6]);
1267             p7 = vlib_get_buffer (vm, from[7]);
1268
1269             /* Prefetch the buffer header and packet for the N+2 loop iteration */
1270             vlib_prefetch_buffer_header (p4, LOAD);
1271             vlib_prefetch_buffer_header (p5, LOAD);
1272             vlib_prefetch_buffer_header (p6, LOAD);
1273             vlib_prefetch_buffer_header (p7, LOAD);
1274
1275             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1276             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1277             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1278             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1279           }
1280
1281           to_next[0] = bi0 = from[0];
1282           to_next[1] = bi1 = from[1];
1283           to_next[2] = bi2 = from[2];
1284           to_next[3] = bi3 = from[3];
1285           from += 4;
1286           to_next += 4;
1287           n_left_from -= 4;
1288           n_left_to_next -= 4;
1289
1290           b0 = vlib_get_buffer (vm, bi0);
1291           b1 = vlib_get_buffer (vm, bi1);
1292           b2 = vlib_get_buffer (vm, bi2);
1293           b3 = vlib_get_buffer (vm, bi3);
1294
1295           ip0 = vlib_buffer_get_current (b0);
1296           ip1 = vlib_buffer_get_current (b1);
1297           ip2 = vlib_buffer_get_current (b2);
1298           ip3 = vlib_buffer_get_current (b3);
1299
1300           sr0 =
1301             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1302           sr1 =
1303             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, &prev1);
1304           sr2 =
1305             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, &prev2);
1306           sr3 =
1307             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, &prev3);
1308
1309           ls0 =
1310             pool_elt_at_index (sm->localsids,
1311                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1312           ls1 =
1313             pool_elt_at_index (sm->localsids,
1314                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
1315           ls2 =
1316             pool_elt_at_index (sm->localsids,
1317                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
1318           ls3 =
1319             pool_elt_at_index (sm->localsids,
1320                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1321
1322           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1323                               prev0);
1324           end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1325                               prev1);
1326           end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1327                               prev2);
1328           end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1329                               prev3);
1330
1331           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1332             {
1333               sr_localsid_trace_t *tr =
1334                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1335               tr->num_segments = 0;
1336               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1337                            sizeof (tr->localsid.as_u8));
1338               tr->behavior = ls0->behavior;
1339               if (ip0 == vlib_buffer_get_current (b0))
1340                 {
1341                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1342                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1343                     {
1344                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1345                       tr->num_segments =
1346                         sr0->length * 8 / sizeof (ip6_address_t);
1347                       tr->segments_left = sr0->segments_left;
1348                     }
1349                 }
1350               else
1351                 tr->num_segments = 0xFF;
1352             }
1353
1354           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1355             {
1356               sr_localsid_trace_t *tr =
1357                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1358               tr->num_segments = 0;
1359               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1360                            sizeof (tr->localsid.as_u8));
1361               tr->behavior = ls1->behavior;
1362               if (ip1 == vlib_buffer_get_current (b1))
1363                 {
1364                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1365                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1366                     {
1367                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1368                       tr->num_segments =
1369                         sr1->length * 8 / sizeof (ip6_address_t);
1370                       tr->segments_left = sr1->segments_left;
1371                     }
1372                 }
1373               else
1374                 tr->num_segments = 0xFF;
1375             }
1376
1377           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1378             {
1379               sr_localsid_trace_t *tr =
1380                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1381               tr->num_segments = 0;
1382               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1383                            sizeof (tr->localsid.as_u8));
1384               tr->behavior = ls2->behavior;
1385               if (ip2 == vlib_buffer_get_current (b2))
1386                 {
1387                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1388                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1389                     {
1390                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1391                       tr->num_segments =
1392                         sr2->length * 8 / sizeof (ip6_address_t);
1393                       tr->segments_left = sr2->segments_left;
1394                     }
1395                 }
1396               else
1397                 tr->num_segments = 0xFF;
1398             }
1399
1400           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1401             {
1402               sr_localsid_trace_t *tr =
1403                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1404               tr->num_segments = 0;
1405               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1406                            sizeof (tr->localsid.as_u8));
1407               tr->behavior = ls3->behavior;
1408               if (ip3 == vlib_buffer_get_current (b3))
1409                 {
1410                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1411                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1412                     {
1413                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1414                       tr->num_segments =
1415                         sr3->length * 8 / sizeof (ip6_address_t);
1416                       tr->segments_left = sr3->segments_left;
1417                     }
1418                 }
1419               else
1420                 tr->num_segments = 0xFF;
1421             }
1422
1423           vlib_increment_combined_counter
1424             (((next0 ==
1425                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1426               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1427              1, vlib_buffer_length_in_chain (vm, b0));
1428
1429           vlib_increment_combined_counter
1430             (((next1 ==
1431                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1432               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1433              1, vlib_buffer_length_in_chain (vm, b1));
1434
1435           vlib_increment_combined_counter
1436             (((next2 ==
1437                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1438               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1439              1, vlib_buffer_length_in_chain (vm, b2));
1440
1441           vlib_increment_combined_counter
1442             (((next3 ==
1443                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1444               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1445              1, vlib_buffer_length_in_chain (vm, b3));
1446
1447           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1448                                            n_left_to_next, bi0, bi1, bi2, bi3,
1449                                            next0, next1, next2, next3);
1450         }
1451
1452       /* Single loop for potentially the last three packets */
1453       while (n_left_from > 0 && n_left_to_next > 0)
1454         {
1455           u32 bi0;
1456           vlib_buffer_t *b0;
1457           ip6_header_t *ip0 = 0;
1458           ip6_ext_header_t *prev0;
1459           ip6_sr_header_t *sr0;
1460           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1461           ip6_sr_localsid_t *ls0;
1462
1463           bi0 = from[0];
1464           to_next[0] = bi0;
1465           from += 1;
1466           to_next += 1;
1467           n_left_from -= 1;
1468           n_left_to_next -= 1;
1469
1470           b0 = vlib_get_buffer (vm, bi0);
1471           ip0 = vlib_buffer_get_current (b0);
1472           sr0 =
1473             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1474
1475           /* Lookup the SR End behavior based on IP DA (adj) */
1476           ls0 =
1477             pool_elt_at_index (sm->localsids,
1478                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1479
1480           /* SRH processing */
1481           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1482                               prev0);
1483
1484           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1485             {
1486               sr_localsid_trace_t *tr =
1487                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1488               tr->num_segments = 0;
1489               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1490                            sizeof (tr->localsid.as_u8));
1491               tr->behavior = ls0->behavior;
1492               if (ip0 == vlib_buffer_get_current (b0))
1493                 {
1494                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1495                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1496                     {
1497                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1498                       tr->num_segments =
1499                         sr0->length * 8 / sizeof (ip6_address_t);
1500                       tr->segments_left = sr0->segments_left;
1501                     }
1502                 }
1503               else
1504                 tr->num_segments = 0xFF;
1505             }
1506
1507           vlib_increment_combined_counter
1508             (((next0 ==
1509                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1510               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1511              1, vlib_buffer_length_in_chain (vm, b0));
1512
1513           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1514                                            n_left_to_next, bi0, next0);
1515         }
1516       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1517     }
1518   return from_frame->n_vectors;
1519 }
1520
1521 /* *INDENT-OFF* */
1522 VLIB_REGISTER_NODE (sr_localsid_node) = {
1523   .function = sr_localsid_fn,
1524   .name = "sr-localsid",
1525   .vector_size = sizeof (u32),
1526   .format_trace = format_sr_localsid_trace,
1527   .type = VLIB_NODE_TYPE_INTERNAL,
1528   .n_errors = SR_LOCALSID_N_ERROR,
1529   .error_strings = sr_localsid_error_strings,
1530   .n_next_nodes = SR_LOCALSID_N_NEXT,
1531   .next_nodes = {
1532 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1533     foreach_sr_localsid_next
1534 #undef _
1535   },
1536 };
1537 /* *INDENT-ON* */
1538
1539 static u8 *
1540 format_sr_dpo (u8 * s, va_list * args)
1541 {
1542   index_t index = va_arg (*args, index_t);
1543   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1544
1545   return (format (s, "SR: localsid_index:[%d]", index));
1546 }
1547
1548 const static dpo_vft_t sr_loc_vft = {
1549   .dv_lock = sr_dpo_lock,
1550   .dv_unlock = sr_dpo_unlock,
1551   .dv_format = format_sr_dpo,
1552 };
1553
1554 const static char *const sr_loc_ip6_nodes[] = {
1555   "sr-localsid",
1556   NULL,
1557 };
1558
1559 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1560   [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1561 };
1562
1563 const static char *const sr_loc_d_ip6_nodes[] = {
1564   "sr-localsid-d",
1565   NULL,
1566 };
1567
1568 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1569   [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1570 };
1571
1572
1573 /*************************** SR LocalSID plugins ******************************/
1574 /**
1575  * @brief SR LocalSID plugin registry
1576  */
1577 int
1578 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1579                                u8 * keyword_str, u8 * def_str,
1580                                u8 * params_str, u8 prefix_length,
1581                                dpo_type_t * dpo,
1582                                format_function_t * ls_format,
1583                                unformat_function_t * ls_unformat,
1584                                sr_plugin_callback_t * creation_fn,
1585                                sr_plugin_callback_t * removal_fn)
1586 {
1587   ip6_sr_main_t *sm = &sr_main;
1588   uword *p;
1589
1590   sr_localsid_fn_registration_t *plugin;
1591
1592   /* Did this function exist? If so update it */
1593   p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1594   if (p)
1595     {
1596       plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1597     }
1598   /* Else create a new one and set hash key */
1599   else
1600     {
1601       pool_get (sm->plugin_functions, plugin);
1602       hash_set_mem (sm->plugin_functions_by_key, fn_name,
1603                     plugin - sm->plugin_functions);
1604     }
1605
1606   clib_memset (plugin, 0, sizeof (*plugin));
1607
1608   plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1609   plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1610   plugin->prefix_length = prefix_length;
1611   plugin->ls_format = ls_format;
1612   plugin->ls_unformat = ls_unformat;
1613   plugin->creation = creation_fn;
1614   plugin->removal = removal_fn;
1615   clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1616   plugin->function_name = format (0, "%s%c", fn_name, 0);
1617   plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1618   plugin->def_str = format (0, "%s%c", def_str, 0);
1619   plugin->params_str = format (0, "%s%c", params_str, 0);
1620
1621   return plugin->sr_localsid_function_number;
1622 }
1623
1624 /**
1625  * @brief CLI function to 'show' all available SR LocalSID behaviors
1626  */
1627 static clib_error_t *
1628 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1629                                        unformat_input_t * input,
1630                                        vlib_cli_command_t * cmd)
1631 {
1632   ip6_sr_main_t *sm = &sr_main;
1633   sr_localsid_fn_registration_t *plugin;
1634   sr_localsid_fn_registration_t **plugins_vec = 0;
1635   int i;
1636
1637   vlib_cli_output (vm,
1638                    "SR LocalSIDs behaviors:\n-----------------------\n\n");
1639
1640   /* *INDENT-OFF* */
1641   pool_foreach (plugin, sm->plugin_functions,
1642     ({ vec_add1 (plugins_vec, plugin); }));
1643   /* *INDENT-ON* */
1644
1645   /* Print static behaviors */
1646   vlib_cli_output (vm, "Default behaviors:\n"
1647                    "\tEnd\t-> Endpoint.\n"
1648                    "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1649                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1650                    "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1651                    "\t\tParameters: '<fib_table>'\n"
1652                    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1653                    "\t\tParameters: '<iface>'\n"
1654                    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1655                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1656                    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1657                    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1658                    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1659                    "\t\tParameters: '<ip6_fib_table>'\n"
1660                    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1661                    "\t\tParameters: '<ip4_fib_table>'\n");
1662   vlib_cli_output (vm, "Plugin behaviors:\n");
1663   for (i = 0; i < vec_len (plugins_vec); i++)
1664     {
1665       plugin = plugins_vec[i];
1666       vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1667                        plugin->def_str);
1668       vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1669     }
1670   return 0;
1671 }
1672
1673 /* *INDENT-OFF* */
1674 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1675   .path = "show sr localsids behaviors",
1676   .short_help = "show sr localsids behaviors",
1677   .function = show_sr_localsid_behaviors_command_fn,
1678 };
1679 /* *INDENT-ON* */
1680
1681 /**
1682  * @brief SR LocalSID initialization
1683  */
1684 clib_error_t *
1685 sr_localsids_init (vlib_main_t * vm)
1686 {
1687   /* Init memory for function keys */
1688   ip6_sr_main_t *sm = &sr_main;
1689   mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1690               sizeof (ip6_address_t));
1691   /* Init SR behaviors DPO type */
1692   sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1693   /* Init SR behaviors DPO type */
1694   sr_localsid_d_dpo_type =
1695     dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1696   /* Init memory for localsid plugins */
1697   sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1698   return 0;
1699 }
1700
1701 VLIB_INIT_FUNCTION (sr_localsids_init);
1702 /*
1703 * fd.io coding-style-patch-verification: ON
1704 *
1705 * Local Variables:
1706 * eval: (c-set-style "gnu")
1707 * End:
1708 */