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   if (localsid_prefix_len != 0)
 148     {
 149       pref_length = localsid_prefix_len;
 150     }
 151
 152   /* Check whether there exists a FIB entry with such address */
 153   fib_prefix_t pfx = {
 154     .fp_proto = FIB_PROTOCOL_IP6,
 155     .fp_len = pref_length,
 156   };
 157
 158   pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
 159   pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
 160   pfx.fp_len = pref_length;
 161
 162   /* Lookup the FIB index associated to the table id provided */
 163   u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
 164   if (fib_index == ~0)
 165     return -3;
 166
 167   /* Lookup the localsid in such FIB table */
 168   fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
 169   if (FIB_NODE_INDEX_INVALID != fei)
 170     return -4;                  //There is an entry for such address (the localsid addr)
 171
 172   /* Create a new localsid registry */
 173   pool_get (sm->localsids, ls);
 174   clib_memset (ls, 0, sizeof (*ls));
 175
 176   clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
 177   ls->localsid_prefix_len = pref_length;
 178   ls->end_psp = end_psp;
 179   ls->behavior = behavior;
 180   ls->nh_adj = (u32) ~ 0;
 181   ls->fib_table = fib_table;
 182   switch (behavior)
 183     {
 184     case SR_BEHAVIOR_END:
 185       break;
 186     case SR_BEHAVIOR_X:
 187       ls->sw_if_index = sw_if_index;
 188       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 189       break;
 190     case SR_BEHAVIOR_T:
 191       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 192       break;
 193     case SR_BEHAVIOR_DX4:
 194       ls->sw_if_index = sw_if_index;
 195       clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
 196       break;
 197     case SR_BEHAVIOR_DX6:
 198       ls->sw_if_index = sw_if_index;
 199       clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
 200       break;
 201     case SR_BEHAVIOR_DT6:
 202       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
 203       break;
 204     case SR_BEHAVIOR_DT4:
 205       ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP4, sw_if_index);
 206       break;
 207     case SR_BEHAVIOR_DX2:
 208       ls->sw_if_index = sw_if_index;
 209       ls->vlan_index = vlan_index;
 210       break;
 211     }
 212
 213   /* Figure out the adjacency magic for Xconnect variants */
 214   if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
 215       || ls->behavior == SR_BEHAVIOR_DX6)
 216     {
 217       adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
 218
 219       /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
 220       if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
 221         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
 222                                             nh_addr, sw_if_index);
 223
 224       else if (ls->behavior == SR_BEHAVIOR_DX4)
 225         nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
 226                                             nh_addr, sw_if_index);
 227
 228       /* Check for ADJ creation error. If so panic */
 229       if (nh_adj_index == ADJ_INDEX_INVALID)
 230         {
 231           pool_put (sm->localsids, ls);
 232           return -5;
 233         }
 234
 235       ls->nh_adj = nh_adj_index;
 236     }
 237
 238   /* Set DPO */
 239   if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X
 240       || ls->behavior == SR_BEHAVIOR_T)
 241     dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 242   else if (ls->behavior > SR_BEHAVIOR_D_FIRST
 243            && ls->behavior < SR_BEHAVIOR_LAST)
 244     dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
 245   else if (ls->behavior >= SR_BEHAVIOR_LAST)
 246     {
 247       sr_localsid_fn_registration_t *plugin = 0;
 248       plugin = pool_elt_at_index (sm->plugin_functions,
 249                                   ls->behavior - SR_BEHAVIOR_LAST);
 250       /* Copy the unformat memory result */
 251       ls->plugin_mem = ls_plugin_mem;
 252       /* Callback plugin creation function */
 253       rv = plugin->creation (ls);
 254       if (rv)
 255         {
 256           pool_put (sm->localsids, ls);
 257           return -6;
 258         }
 259       dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
 260     }
 261
 262   /* Set hash key for searching localsid by address */
 263   mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
 264              NULL);
 265
 266   fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
 267                                    FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
 268   dpo_reset (&dpo);
 269
 270   /* Set counter to zero */
 271   vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
 272                                   ls - sm->localsids);
 273   vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
 274                                   ls - sm->localsids);
 275
 276   vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
 277                               ls - sm->localsids);
 278   vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
 279                               ls - sm->localsids);
 280
 281   return 0;
 282 }
 283
 284 /**
 285  * @brief SR LocalSID CLI function.
 286  *
 287  * @see sr_cli_localsid
 288  */
 289 static clib_error_t *
 290 sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 291                             vlib_cli_command_t * cmd)
 292 {
 293   vnet_main_t *vnm = vnet_get_main ();
 294   ip6_sr_main_t *sm = &sr_main;
 295   u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
 296   u16 prefix_len = 0;
 297   int is_del = 0;
 298   int end_psp = 0;
 299   ip6_address_t resulting_address;
 300   ip46_address_t next_hop;
 301   char address_set = 0;
 302   char behavior = 0;
 303   void *ls_plugin_mem = 0;
 304
 305   int rv;
 306
 307   clib_memset (&resulting_address, 0, sizeof (ip6_address_t));
 308   ip46_address_reset (&next_hop);
 309
 310   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 311     {
 312       if (unformat (input, "del"))
 313         is_del = 1;
 314       else if (!address_set
 315                && unformat (input, "address %U/%u", unformat_ip6_address,
 316                             &resulting_address, &prefix_len))
 317         address_set = 1;
 318       else if (!address_set
 319                && unformat (input, "address %U", unformat_ip6_address,
 320                             &resulting_address))
 321         address_set = 1;
 322       else if (!address_set
 323                && unformat (input, "addr %U", unformat_ip6_address,
 324                             &resulting_address))
 325         address_set = 1;
 326       else if (unformat (input, "fib-table %u", &fib_index));
 327       else if (vlan_index == (u32) ~ 0
 328                && unformat (input, "vlan %u", &vlan_index));
 329       else if (!behavior && unformat (input, "behavior"))
 330         {
 331           if (unformat (input, "end.x %U %U",
 332                         unformat_vnet_sw_interface, vnm, &sw_if_index,
 333                         unformat_ip6_address, &next_hop.ip6))
 334             behavior = SR_BEHAVIOR_X;
 335           else if (unformat (input, "end.t %u", &sw_if_index))
 336             behavior = SR_BEHAVIOR_T;
 337           else if (unformat (input, "end.dx6 %U %U",
 338                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 339                              unformat_ip6_address, &next_hop.ip6))
 340             behavior = SR_BEHAVIOR_DX6;
 341           else if (unformat (input, "end.dx4 %U %U",
 342                              unformat_vnet_sw_interface, vnm, &sw_if_index,
 343                              unformat_ip4_address, &next_hop.ip4))
 344             behavior = SR_BEHAVIOR_DX4;
 345           else if (unformat (input, "end.dx2 %U",
 346                              unformat_vnet_sw_interface, vnm, &sw_if_index))
 347             behavior = SR_BEHAVIOR_DX2;
 348           else if (unformat (input, "end.dt6 %u", &sw_if_index))
 349             behavior = SR_BEHAVIOR_DT6;
 350           else if (unformat (input, "end.dt4 %u", &sw_if_index))
 351             behavior = SR_BEHAVIOR_DT4;
 352           else
 353             {
 354               /* Loop over all the plugin behavior format functions */
 355               sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
 356               sr_localsid_fn_registration_t **plugin_it = 0;
 357
 358               /* Create a vector out of the plugin pool as recommended */
 359               /* *INDENT-OFF* */
 360               pool_foreach (plugin, sm->plugin_functions,
 361                 {
 362                   vec_add1 (vec_plugins, plugin);
 363                 });
 364               /* *INDENT-ON* */
 365
 366               vec_foreach (plugin_it, vec_plugins)
 367               {
 368                 if (unformat
 369                     (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
 370                   {
 371                     behavior = (*plugin_it)->sr_localsid_function_number;
 372                     break;
 373                   }
 374               }
 375             }
 376
 377           if (!behavior)
 378             {
 379               if (unformat (input, "end"))
 380                 behavior = SR_BEHAVIOR_END;
 381               else
 382                 break;
 383             }
 384         }
 385       else if (!end_psp && unformat (input, "psp"))
 386         end_psp = 1;
 387       else
 388         break;
 389     }
 390
 391   if (!behavior && end_psp)
 392     behavior = SR_BEHAVIOR_END;
 393
 394   if (!address_set)
 395     return clib_error_return (0,
 396                               "Error: SRv6 LocalSID address is mandatory.");
 397   if (!is_del && !behavior)
 398     return clib_error_return (0,
 399                               "Error: SRv6 LocalSID behavior is mandatory.");
 400   if (vlan_index != (u32) ~ 0)
 401     return clib_error_return (0,
 402                               "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
 403   if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
 404     return clib_error_return (0,
 405                               "Error: SRv6 PSP only compatible with End and End.X");
 406
 407   rv =
 408     sr_cli_localsid (is_del, &resulting_address, prefix_len, end_psp,
 409                      behavior, sw_if_index, vlan_index, fib_index, &next_hop,
 410                      ls_plugin_mem);
 411
 412   switch (rv)
 413     {
 414     case 0:
 415       break;
 416     case 1:
 417       return 0;
 418     case -1:
 419       return clib_error_return (0,
 420                                 "Identical localsid already exists. Requested localsid not created.");
 421     case -2:
 422       return clib_error_return (0,
 423                                 "The requested localsid could not be deleted. SR localsid not found");
 424     case -3:
 425       return clib_error_return (0, "FIB table %u does not exist", fib_index);
 426     case -4:
 427       return clib_error_return (0, "There is already one FIB entry for the"
 428                                 "requested localsid non segment routing related");
 429     case -5:
 430       return clib_error_return (0,
 431                                 "Could not create ARP/ND entry for such next_hop. Internal error.");
 432     case -6:
 433       return clib_error_return (0,
 434                                 "Error on the plugin based localsid creation.");
 435     default:
 436       return clib_error_return (0, "BUG: sr localsid returns %d", rv);
 437     }
 438   return 0;
 439 }
 440
 441 /* *INDENT-OFF* */
 442 VLIB_CLI_COMMAND (sr_localsid_command, static) = {
 443   .path = "sr localsid",
 444   .short_help = "sr localsid (del) address XX:XX::YY:YY"
 445       "(fib-table 8) behavior STRING",
 446   .long_help =
 447     "Create SR LocalSID and binds it to a particular behavior\n"
 448     "Arguments:\n"
 449     "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
 450     "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
 451     "\tbehavior STRING            Specifies the behavior\n"
 452     "\n\tBehaviors:\n"
 453     "\tEnd\t-> Endpoint.\n"
 454     "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
 455     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 456     "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
 457     "\t\tParameters: '<iface>'\n"
 458     "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
 459     "\t\tParameters: '<iface> <ip6_next_hop>'\n"
 460     "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
 461     "\t\tParameters: '<iface> <ip4_next_hop>'\n"
 462     "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
 463     "\t\tParameters: '<ip6_fib_table>'\n"
 464     "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
 465     "\t\tParameters: '<ip4_fib_table>'\n",
 466   .function = sr_cli_localsid_command_fn,
 467 };
 468 /* *INDENT-ON* */
 469
 470 /**
 471  * @brief CLI function to 'show' all SR LocalSIDs on console.
 472  */
 473 static clib_error_t *
 474 show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
 475                              vlib_cli_command_t * cmd)
 476 {
 477   vnet_main_t *vnm = vnet_get_main ();
 478   ip6_sr_main_t *sm = &sr_main;
 479   ip6_sr_localsid_t **localsid_list = 0;
 480   ip6_sr_localsid_t *ls;
 481   int i;
 482
 483   vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
 484   vlib_cli_output (vm, "=========================");
 485   /* *INDENT-OFF* */
 486   pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
 487   /* *INDENT-ON* */
 488   for (i = 0; i < vec_len (localsid_list); i++)
 489     {
 490       ls = localsid_list[i];
 491       switch (ls->behavior)
 492         {
 493         case SR_BEHAVIOR_END:
 494           vlib_cli_output (vm, "\tAddress: \t%U/%u\n\tBehavior: \tEnd",
 495                            format_ip6_address, &ls->localsid,
 496                            ls->localsid_prefix_len);
 497           break;
 498         case SR_BEHAVIOR_X:
 499           vlib_cli_output (vm,
 500                            "\tAddress: \t%U/%u\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
 501                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 502                            format_ip6_address, &ls->localsid,
 503                            ls->localsid_prefix_len,
 504                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 505                            format_ip6_address, &ls->next_hop.ip6);
 506           break;
 507         case SR_BEHAVIOR_T:
 508           vlib_cli_output (vm,
 509                            "\tAddress: \t%U/%u\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
 510                            "\n\tTable:  \t%u",
 511                            format_ip6_address, &ls->localsid,
 512                            ls->localsid_prefix_len,
 513                            fib_table_get_table_id (ls->vrf_index,
 514                                                    FIB_PROTOCOL_IP6));
 515           break;
 516         case SR_BEHAVIOR_DX4:
 517           vlib_cli_output (vm,
 518                            "\tAddress: \t%U/%u\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
 519                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 520                            format_ip6_address, &ls->localsid,
 521                            ls->localsid_prefix_len,
 522                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 523                            format_ip4_address, &ls->next_hop.ip4);
 524           break;
 525         case SR_BEHAVIOR_DX6:
 526           vlib_cli_output (vm,
 527                            "\tAddress: \t%U/%u\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
 528                            "\n\tIface:  \t%U\n\tNext hop: \t%U",
 529                            format_ip6_address, &ls->localsid,
 530                            ls->localsid_prefix_len,
 531                            format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
 532                            format_ip6_address, &ls->next_hop.ip6);
 533           break;
 534         case SR_BEHAVIOR_DX2:
 535           if (ls->vlan_index == (u32) ~ 0)
 536             vlib_cli_output (vm,
 537                              "\tAddress: \t%U/%u\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
 538                              "\n\tIface:  \t%U", format_ip6_address,
 539                              &ls->localsid, ls->localsid_prefix_len,
 540                              format_vnet_sw_if_index_name, vnm,
 541                              ls->sw_if_index);
 542           else
 543             vlib_cli_output (vm,
 544                              "Unsupported yet. (DX2 with egress VLAN rewrite)");
 545           break;
 546         case SR_BEHAVIOR_DT6:
 547           vlib_cli_output (vm,
 548                            "\tAddress: \t%U/%u\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
 549                            "\n\tTable: %u", format_ip6_address, &ls->localsid,
 550                            ls->localsid_prefix_len,
 551                            fib_table_get_table_id (ls->vrf_index,
 552                                                    FIB_PROTOCOL_IP6));
 553           break;
 554         case SR_BEHAVIOR_DT4:
 555           vlib_cli_output (vm,
 556                            "\tAddress: \t%U/%u\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
 557                            "\n\tTable: \t%u", format_ip6_address,
 558                            &ls->localsid, ls->localsid_prefix_len,
 559                            fib_table_get_table_id (ls->vrf_index,
 560                                                    FIB_PROTOCOL_IP4));
 561           break;
 562         default:
 563           if (ls->behavior >= SR_BEHAVIOR_LAST)
 564             {
 565               sr_localsid_fn_registration_t *plugin =
 566                 pool_elt_at_index (sm->plugin_functions,
 567                                    ls->behavior - SR_BEHAVIOR_LAST);
 568
 569               vlib_cli_output (vm, "\tAddress: \t%U/%u\n"
 570                                "\tBehavior: \t%s (%s)\n\t%U",
 571                                format_ip6_address, &ls->localsid,
 572                                ls->localsid_prefix_len, plugin->keyword_str,
 573                                plugin->def_str, plugin->ls_format,
 574                                ls->plugin_mem);
 575             }
 576           else
 577             //Should never get here...
 578             vlib_cli_output (vm, "Internal error");
 579           break;
 580         }
 581       if (ls->end_psp)
 582         vlib_cli_output (vm, "\tPSP: \tTrue\n");
 583
 584       /* Print counters */
 585       vlib_counter_t valid, invalid;
 586       vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
 587       vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
 588       vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
 589                        valid.packets, valid.bytes);
 590       vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
 591                        invalid.packets, invalid.bytes);
 592       vlib_cli_output (vm, "--------------------");
 593     }
 594   return 0;
 595 }
 596
 597 /* *INDENT-OFF* */
 598 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
 599   .path = "show sr localsids",
 600   .short_help = "show sr localsids",
 601   .function = show_sr_localsid_command_fn,
 602 };
 603 /* *INDENT-ON* */
 604
 605 /**
 606  * @brief Function to 'clear' ALL SR localsid counters
 607  */
 608 static clib_error_t *
 609 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
 610                                        unformat_input_t * input,
 611                                        vlib_cli_command_t * cmd)
 612 {
 613   ip6_sr_main_t *sm = &sr_main;
 614
 615   vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
 616   vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
 617
 618   return 0;
 619 }
 620
 621 /* *INDENT-OFF* */
 622 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
 623   .path = "clear sr localsid-counters",
 624   .short_help = "clear sr localsid-counters",
 625   .function = clear_sr_localsid_counters_command_fn,
 626 };
 627 /* *INDENT-ON* */
 628
 629 /************************ SR LocalSID graphs node ****************************/
 630 /**
 631  * @brief SR localsid node trace
 632  */
 633 typedef struct
 634 {
 635   ip6_address_t localsid;
 636   u16 behavior;
 637   u8 sr[256];
 638   u8 num_segments;
 639   u8 segments_left;
 640 } sr_localsid_trace_t;
 641
 642 #define foreach_sr_localsid_error                                   \
 643 _(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
 644 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
 645 _(NO_SRH, "(SR-Error) No SR header")                                \
 646 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
 647 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
 648 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
 649
 650 typedef enum
 651 {
 652 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
 653   foreach_sr_localsid_error
 654 #undef _
 655     SR_LOCALSID_N_ERROR,
 656 } sr_localsid_error_t;
 657
 658 static char *sr_localsid_error_strings[] = {
 659 #define _(sym,string) string,
 660   foreach_sr_localsid_error
 661 #undef _
 662 };
 663
 664 #define foreach_sr_localsid_next        \
 665 _(ERROR, "error-drop")                  \
 666 _(IP6_LOOKUP, "ip6-lookup")             \
 667 _(IP4_LOOKUP, "ip4-lookup")             \
 668 _(IP6_REWRITE, "ip6-rewrite")           \
 669 _(IP4_REWRITE, "ip4-rewrite")           \
 670 _(INTERFACE_OUTPUT, "interface-output")
 671
 672 typedef enum
 673 {
 674 #define _(s,n) SR_LOCALSID_NEXT_##s,
 675   foreach_sr_localsid_next
 676 #undef _
 677     SR_LOCALSID_N_NEXT,
 678 } sr_localsid_next_t;
 679
 680 /**
 681  * @brief SR LocalSID graph node trace function
 682  *
 683  * @see sr_localsid
 684  */
 685 u8 *
 686 format_sr_localsid_trace (u8 * s, va_list * args)
 687 {
 688   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 689   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 690   sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
 691
 692   s =
 693     format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
 694             &t->localsid);
 695   switch (t->behavior)
 696     {
 697     case SR_BEHAVIOR_END:
 698       s = format (s, "\tBehavior: End\n");
 699       break;
 700     case SR_BEHAVIOR_DX6:
 701       s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
 702       break;
 703     case SR_BEHAVIOR_DX4:
 704       s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
 705       break;
 706     case SR_BEHAVIOR_X:
 707       s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
 708       break;
 709     case SR_BEHAVIOR_T:
 710       s = format (s, "\tBehavior: IPv6 specific table lookup\n");
 711       break;
 712     case SR_BEHAVIOR_DT6:
 713       s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
 714       break;
 715     case SR_BEHAVIOR_DT4:
 716       s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
 717       break;
 718     case SR_BEHAVIOR_DX2:
 719       s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
 720       break;
 721     default:
 722       s = format (s, "\tBehavior: defined in plugin\n");        //TODO
 723       break;
 724     }
 725   if (t->num_segments != 0xFF)
 726     {
 727       if (t->num_segments > 0)
 728         {
 729           s = format (s, "\tSegments left: %d\n", t->segments_left);
 730           s = format (s, "\tSID list: [in ietf order]");
 731           int i = 0;
 732           for (i = 0; i < t->num_segments; i++)
 733             {
 734               s = format (s, "\n\t-> %U", format_ip6_address,
 735                           (ip6_address_t *) & t->sr[i *
 736                                                     sizeof (ip6_address_t)]);
 737             }
 738         }
 739     }
 740   return s;
 741 }
 742
 743 /**
 744  * @brief Function doing End processing.
 745  */
 746 static_always_inline void
 747 end_srh_processing (vlib_node_runtime_t * node,
 748                     vlib_buffer_t * b0,
 749                     ip6_header_t * ip0,
 750                     ip6_sr_header_t * sr0,
 751                     ip6_sr_localsid_t * ls0,
 752                     u32 * next0, u8 psp, ip6_ext_header_t * prev0)
 753 {
 754   ip6_address_t *new_dst0;
 755
 756   if (PREDICT_TRUE (sr0 && sr0->type == ROUTING_HEADER_TYPE_SR))
 757     {
 758       if (sr0->segments_left == 1 && psp)
 759         {
 760           u32 new_l0, sr_len;
 761           u64 *copy_dst0, *copy_src0;
 762           u32 copy_len_u64s0 = 0;
 763
 764           ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
 765           ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
 766
 767           /* Remove the SRH taking care of the rest of IPv6 ext header */
 768           if (prev0)
 769             prev0->next_hdr = sr0->protocol;
 770           else
 771             ip0->protocol = sr0->protocol;
 772
 773           sr_len = ip6_ext_header_len (sr0);
 774           vlib_buffer_advance (b0, sr_len);
 775           new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
 776           ip0->payload_length = clib_host_to_net_u16 (new_l0);
 777           copy_src0 = (u64 *) ip0;
 778           copy_dst0 = copy_src0 + (sr0->length + 1);
 779           /* number of 8 octet units to copy
 780            * By default in absence of extension headers it is equal to length of ip6 header
 781            * With extension headers it number of 8 octet units of ext headers preceding
 782            * SR header
 783            */
 784           copy_len_u64s0 =
 785             (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
 786           copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
 787           copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
 788           copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
 789           copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
 790           copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
 791
 792           int i;
 793           for (i = copy_len_u64s0 - 1; i >= 0; i--)
 794             {
 795               copy_dst0[i] = copy_src0[i];
 796             }
 797
 798           if (ls0->behavior == SR_BEHAVIOR_X)
 799             {
 800               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 801               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 802             }
 803           else if (ls0->behavior == SR_BEHAVIOR_T)
 804             {
 805               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 806             }
 807         }
 808       else if (PREDICT_TRUE (sr0->segments_left > 0))
 809         {
 810           sr0->segments_left -= 1;
 811           new_dst0 = (ip6_address_t *) (sr0->segments);
 812           new_dst0 += sr0->segments_left;
 813           ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
 814           ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
 815
 816           if (ls0->behavior == SR_BEHAVIOR_X)
 817             {
 818               vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 819               *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 820             }
 821           else if (ls0->behavior == SR_BEHAVIOR_T)
 822             {
 823               vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 824             }
 825         }
 826       else
 827         {
 828           *next0 = SR_LOCALSID_NEXT_ERROR;
 829           b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
 830         }
 831     }
 832   else
 833     {
 834       /* Error. Routing header of type != SR */
 835       *next0 = SR_LOCALSID_NEXT_ERROR;
 836       b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
 837     }
 838 }
 839
 840 /*
 841  * @brief Function doing SRH processing for D* variants
 842  */
 843 static_always_inline void
 844 end_decaps_srh_processing (vlib_node_runtime_t * node,
 845                            vlib_buffer_t * b0,
 846                            ip6_header_t * ip0,
 847                            ip6_sr_header_t * sr0,
 848                            ip6_sr_localsid_t * ls0, u32 * next0)
 849 {
 850   /* Compute the size of the IPv6 header with all Ext. headers */
 851   u8 next_proto;
 852   ip6_ext_header_t *next_ext_header;
 853   u16 total_size = 0;
 854
 855   next_proto = ip0->protocol;
 856   next_ext_header = (void *) (ip0 + 1);
 857   total_size = sizeof (ip6_header_t);
 858   while (ip6_ext_hdr (next_proto))
 859     {
 860       total_size += ip6_ext_header_len (next_ext_header);
 861       next_proto = next_ext_header->next_hdr;
 862       next_ext_header = ip6_ext_next_header (next_ext_header);
 863     }
 864
 865   /* Ensure this is the last segment. Otherwise drop. */
 866   if (sr0 && sr0->segments_left != 0)
 867     {
 868       *next0 = SR_LOCALSID_NEXT_ERROR;
 869       b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
 870       return;
 871     }
 872
 873   switch (next_proto)
 874     {
 875     case IP_PROTOCOL_IPV6:
 876       /* Encap-End IPv6. Pop outer IPv6 header. */
 877       if (ls0->behavior == SR_BEHAVIOR_DX6)
 878         {
 879           vlib_buffer_advance (b0, total_size);
 880           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 881           *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
 882           return;
 883         }
 884       else if (ls0->behavior == SR_BEHAVIOR_DT6)
 885         {
 886           vlib_buffer_advance (b0, total_size);
 887           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 888           return;
 889         }
 890       break;
 891     case IP_PROTOCOL_IP_IN_IP:
 892       /* Encap-End IPv4. Pop outer IPv6 header */
 893       if (ls0->behavior == SR_BEHAVIOR_DX4)
 894         {
 895           vlib_buffer_advance (b0, total_size);
 896           vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
 897           *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
 898           return;
 899         }
 900       else if (ls0->behavior == SR_BEHAVIOR_DT4)
 901         {
 902           vlib_buffer_advance (b0, total_size);
 903           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
 904           *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
 905           return;
 906         }
 907       break;
 908     case IP_PROTOCOL_IP6_ETHERNET:
 909       /* L2 encaps */
 910       if (ls0->behavior == SR_BEHAVIOR_DX2)
 911         {
 912           vlib_buffer_advance (b0, total_size);
 913           vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
 914           *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
 915           return;
 916         }
 917       break;
 918     }
 919   *next0 = SR_LOCALSID_NEXT_ERROR;
 920   b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
 921   return;
 922 }
 923
 924 /**
 925  * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
 926  */
 927 static uword
 928 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
 929                   vlib_frame_t * from_frame)
 930 {
 931   u32 n_left_from, next_index, *from, *to_next;
 932   ip6_sr_main_t *sm = &sr_main;
 933   from = vlib_frame_vector_args (from_frame);
 934   n_left_from = from_frame->n_vectors;
 935   next_index = node->cached_next_index;
 936   u32 thread_index = vm->thread_index;
 937
 938   while (n_left_from > 0)
 939     {
 940       u32 n_left_to_next;
 941       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 942
 943       /* Quad - Loop */
 944       while (n_left_from >= 8 && n_left_to_next >= 4)
 945         {
 946           u32 bi0, bi1, bi2, bi3;
 947           vlib_buffer_t *b0, *b1, *b2, *b3;
 948           ip6_header_t *ip0, *ip1, *ip2, *ip3;
 949           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
 950           u32 next0, next1, next2, next3;
 951           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
 952           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
 953
 954           /* Prefetch next iteration. */
 955           {
 956             vlib_buffer_t *p4, *p5, *p6, *p7;
 957
 958             p4 = vlib_get_buffer (vm, from[4]);
 959             p5 = vlib_get_buffer (vm, from[5]);
 960             p6 = vlib_get_buffer (vm, from[6]);
 961             p7 = vlib_get_buffer (vm, from[7]);
 962
 963             /* Prefetch the buffer header and packet for the N+4 loop iteration */
 964             vlib_prefetch_buffer_header (p4, LOAD);
 965             vlib_prefetch_buffer_header (p5, LOAD);
 966             vlib_prefetch_buffer_header (p6, LOAD);
 967             vlib_prefetch_buffer_header (p7, LOAD);
 968
 969             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
 970             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
 971             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
 972             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
 973           }
 974
 975           to_next[0] = bi0 = from[0];
 976           to_next[1] = bi1 = from[1];
 977           to_next[2] = bi2 = from[2];
 978           to_next[3] = bi3 = from[3];
 979           from += 4;
 980           to_next += 4;
 981           n_left_from -= 4;
 982           n_left_to_next -= 4;
 983
 984           b0 = vlib_get_buffer (vm, bi0);
 985           b1 = vlib_get_buffer (vm, bi1);
 986           b2 = vlib_get_buffer (vm, bi2);
 987           b3 = vlib_get_buffer (vm, bi3);
 988
 989           ls0 =
 990             pool_elt_at_index (sm->localsids,
 991                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
 992           ls1 =
 993             pool_elt_at_index (sm->localsids,
 994                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
 995           ls2 =
 996             pool_elt_at_index (sm->localsids,
 997                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
 998           ls3 =
 999             pool_elt_at_index (sm->localsids,
1000                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1001
1002           ip0 = vlib_buffer_get_current (b0);
1003           ip1 = vlib_buffer_get_current (b1);
1004           ip2 = vlib_buffer_get_current (b2);
1005           ip3 = vlib_buffer_get_current (b3);
1006
1007           sr0 =
1008             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1009           sr1 =
1010             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, NULL);
1011           sr2 =
1012             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, NULL);
1013           sr3 =
1014             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, NULL);
1015
1016           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1017           end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
1018           end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
1019           end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
1020
1021           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1022             {
1023               sr_localsid_trace_t *tr =
1024                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1025               tr->num_segments = 0;
1026               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1027                            sizeof (tr->localsid.as_u8));
1028               tr->behavior = ls0->behavior;
1029               if (ip0 == vlib_buffer_get_current (b0))
1030                 {
1031                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1032                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1033                     {
1034                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1035                       tr->num_segments =
1036                         sr0->length * 8 / sizeof (ip6_address_t);
1037                       tr->segments_left = sr0->segments_left;
1038                     }
1039                 }
1040               else
1041                 tr->num_segments = 0xFF;
1042             }
1043
1044           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1045             {
1046               sr_localsid_trace_t *tr =
1047                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1048               tr->num_segments = 0;
1049               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1050                            sizeof (tr->localsid.as_u8));
1051               tr->behavior = ls1->behavior;
1052               if (ip1 == vlib_buffer_get_current (b1))
1053                 {
1054                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1055                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1056                     {
1057                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1058                       tr->num_segments =
1059                         sr1->length * 8 / sizeof (ip6_address_t);
1060                       tr->segments_left = sr1->segments_left;
1061                     }
1062                 }
1063               else
1064                 tr->num_segments = 0xFF;
1065             }
1066
1067           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1068             {
1069               sr_localsid_trace_t *tr =
1070                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1071               tr->num_segments = 0;
1072               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1073                            sizeof (tr->localsid.as_u8));
1074               tr->behavior = ls2->behavior;
1075               if (ip2 == vlib_buffer_get_current (b2))
1076                 {
1077                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1078                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1079                     {
1080                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1081                       tr->num_segments =
1082                         sr2->length * 8 / sizeof (ip6_address_t);
1083                       tr->segments_left = sr2->segments_left;
1084                     }
1085                 }
1086               else
1087                 tr->num_segments = 0xFF;
1088             }
1089
1090           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1091             {
1092               sr_localsid_trace_t *tr =
1093                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1094               tr->num_segments = 0;
1095               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1096                            sizeof (tr->localsid.as_u8));
1097               tr->behavior = ls3->behavior;
1098               if (ip3 == vlib_buffer_get_current (b3))
1099                 {
1100                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1101                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1102                     {
1103                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1104                       tr->num_segments =
1105                         sr3->length * 8 / sizeof (ip6_address_t);
1106                       tr->segments_left = sr3->segments_left;
1107                     }
1108                 }
1109               else
1110                 tr->num_segments = 0xFF;
1111             }
1112
1113           vlib_increment_combined_counter
1114             (((next0 ==
1115                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1116               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1117              1, vlib_buffer_length_in_chain (vm, b0));
1118
1119           vlib_increment_combined_counter
1120             (((next1 ==
1121                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1122               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1123              1, vlib_buffer_length_in_chain (vm, b1));
1124
1125           vlib_increment_combined_counter
1126             (((next2 ==
1127                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1128               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1129              1, vlib_buffer_length_in_chain (vm, b2));
1130
1131           vlib_increment_combined_counter
1132             (((next3 ==
1133                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1134               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1135              1, vlib_buffer_length_in_chain (vm, b3));
1136
1137           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1138                                            n_left_to_next, bi0, bi1, bi2, bi3,
1139                                            next0, next1, next2, next3);
1140         }
1141
1142       /* Single loop for potentially the last three packets */
1143       while (n_left_from > 0 && n_left_to_next > 0)
1144         {
1145           u32 bi0;
1146           vlib_buffer_t *b0;
1147           ip6_header_t *ip0;
1148           ip6_sr_header_t *sr0;
1149           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1150           ip6_sr_localsid_t *ls0;
1151
1152           bi0 = from[0];
1153           to_next[0] = bi0;
1154           from += 1;
1155           to_next += 1;
1156           n_left_from -= 1;
1157           n_left_to_next -= 1;
1158
1159           b0 = vlib_get_buffer (vm, bi0);
1160           ip0 = vlib_buffer_get_current (b0);
1161
1162           /* Lookup the SR End behavior based on IP DA (adj) */
1163           ls0 =
1164             pool_elt_at_index (sm->localsids,
1165                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1166
1167           /* Find SRH as well as previous header */
1168           sr0 =
1169             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1170
1171           /* SRH processing and End variants */
1172           end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1173
1174           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1175             {
1176               sr_localsid_trace_t *tr =
1177                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1178               tr->num_segments = 0;
1179               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1180                            sizeof (tr->localsid.as_u8));
1181               tr->behavior = ls0->behavior;
1182               if (ip0 == vlib_buffer_get_current (b0))
1183                 {
1184                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1185                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1186                     {
1187                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1188                       tr->num_segments =
1189                         sr0->length * 8 / sizeof (ip6_address_t);
1190                       tr->segments_left = sr0->segments_left;
1191                     }
1192                 }
1193               else
1194                 tr->num_segments = 0xFF;
1195             }
1196
1197           /* Increase the counters */
1198           vlib_increment_combined_counter
1199             (((next0 ==
1200                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1201               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1202              1, vlib_buffer_length_in_chain (vm, b0));
1203
1204           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1205                                            n_left_to_next, bi0, next0);
1206         }
1207       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1208     }
1209   return from_frame->n_vectors;
1210 }
1211
1212 /* *INDENT-OFF* */
1213 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1214   .function = sr_localsid_d_fn,
1215   .name = "sr-localsid-d",
1216   .vector_size = sizeof (u32),
1217   .format_trace = format_sr_localsid_trace,
1218   .type = VLIB_NODE_TYPE_INTERNAL,
1219   .n_errors = SR_LOCALSID_N_ERROR,
1220   .error_strings = sr_localsid_error_strings,
1221   .n_next_nodes = SR_LOCALSID_N_NEXT,
1222   .next_nodes = {
1223 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1224     foreach_sr_localsid_next
1225 #undef _
1226   },
1227 };
1228 /* *INDENT-ON* */
1229
1230 /**
1231  * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1232  */
1233 static uword
1234 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1235                 vlib_frame_t * from_frame)
1236 {
1237   u32 n_left_from, next_index, *from, *to_next;
1238   ip6_sr_main_t *sm = &sr_main;
1239   from = vlib_frame_vector_args (from_frame);
1240   n_left_from = from_frame->n_vectors;
1241   next_index = node->cached_next_index;
1242   u32 thread_index = vm->thread_index;
1243
1244   while (n_left_from > 0)
1245     {
1246       u32 n_left_to_next;
1247       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1248
1249       /* Quad - Loop */
1250       while (n_left_from >= 8 && n_left_to_next >= 4)
1251         {
1252           u32 bi0, bi1, bi2, bi3;
1253           vlib_buffer_t *b0, *b1, *b2, *b3;
1254           ip6_header_t *ip0, *ip1, *ip2, *ip3;
1255           ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1256           ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1257           u32 next0, next1, next2, next3;
1258           next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1259           ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1260
1261           /* Prefetch next iteration. */
1262           {
1263             vlib_buffer_t *p4, *p5, *p6, *p7;
1264
1265             p4 = vlib_get_buffer (vm, from[4]);
1266             p5 = vlib_get_buffer (vm, from[5]);
1267             p6 = vlib_get_buffer (vm, from[6]);
1268             p7 = vlib_get_buffer (vm, from[7]);
1269
1270             /* Prefetch the buffer header and packet for the N+2 loop iteration */
1271             vlib_prefetch_buffer_header (p4, LOAD);
1272             vlib_prefetch_buffer_header (p5, LOAD);
1273             vlib_prefetch_buffer_header (p6, LOAD);
1274             vlib_prefetch_buffer_header (p7, LOAD);
1275
1276             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1277             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1278             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1279             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1280           }
1281
1282           to_next[0] = bi0 = from[0];
1283           to_next[1] = bi1 = from[1];
1284           to_next[2] = bi2 = from[2];
1285           to_next[3] = bi3 = from[3];
1286           from += 4;
1287           to_next += 4;
1288           n_left_from -= 4;
1289           n_left_to_next -= 4;
1290
1291           b0 = vlib_get_buffer (vm, bi0);
1292           b1 = vlib_get_buffer (vm, bi1);
1293           b2 = vlib_get_buffer (vm, bi2);
1294           b3 = vlib_get_buffer (vm, bi3);
1295
1296           ip0 = vlib_buffer_get_current (b0);
1297           ip1 = vlib_buffer_get_current (b1);
1298           ip2 = vlib_buffer_get_current (b2);
1299           ip3 = vlib_buffer_get_current (b3);
1300
1301           sr0 =
1302             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1303           sr1 =
1304             ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, &prev1);
1305           sr2 =
1306             ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, &prev2);
1307           sr3 =
1308             ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, &prev3);
1309
1310           ls0 =
1311             pool_elt_at_index (sm->localsids,
1312                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1313           ls1 =
1314             pool_elt_at_index (sm->localsids,
1315                                vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
1316           ls2 =
1317             pool_elt_at_index (sm->localsids,
1318                                vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
1319           ls3 =
1320             pool_elt_at_index (sm->localsids,
1321                                vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1322
1323           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1324                               prev0);
1325           end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1326                               prev1);
1327           end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1328                               prev2);
1329           end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1330                               prev3);
1331
1332           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1333             {
1334               sr_localsid_trace_t *tr =
1335                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1336               tr->num_segments = 0;
1337               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1338                            sizeof (tr->localsid.as_u8));
1339               tr->behavior = ls0->behavior;
1340               if (ip0 == vlib_buffer_get_current (b0))
1341                 {
1342                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1343                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1344                     {
1345                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1346                       tr->num_segments =
1347                         sr0->length * 8 / sizeof (ip6_address_t);
1348                       tr->segments_left = sr0->segments_left;
1349                     }
1350                 }
1351               else
1352                 tr->num_segments = 0xFF;
1353             }
1354
1355           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1356             {
1357               sr_localsid_trace_t *tr =
1358                 vlib_add_trace (vm, node, b1, sizeof (*tr));
1359               tr->num_segments = 0;
1360               clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1361                            sizeof (tr->localsid.as_u8));
1362               tr->behavior = ls1->behavior;
1363               if (ip1 == vlib_buffer_get_current (b1))
1364                 {
1365                   if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1366                       && sr1->type == ROUTING_HEADER_TYPE_SR)
1367                     {
1368                       clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1369                       tr->num_segments =
1370                         sr1->length * 8 / sizeof (ip6_address_t);
1371                       tr->segments_left = sr1->segments_left;
1372                     }
1373                 }
1374               else
1375                 tr->num_segments = 0xFF;
1376             }
1377
1378           if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1379             {
1380               sr_localsid_trace_t *tr =
1381                 vlib_add_trace (vm, node, b2, sizeof (*tr));
1382               tr->num_segments = 0;
1383               clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1384                            sizeof (tr->localsid.as_u8));
1385               tr->behavior = ls2->behavior;
1386               if (ip2 == vlib_buffer_get_current (b2))
1387                 {
1388                   if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1389                       && sr2->type == ROUTING_HEADER_TYPE_SR)
1390                     {
1391                       clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1392                       tr->num_segments =
1393                         sr2->length * 8 / sizeof (ip6_address_t);
1394                       tr->segments_left = sr2->segments_left;
1395                     }
1396                 }
1397               else
1398                 tr->num_segments = 0xFF;
1399             }
1400
1401           if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1402             {
1403               sr_localsid_trace_t *tr =
1404                 vlib_add_trace (vm, node, b3, sizeof (*tr));
1405               tr->num_segments = 0;
1406               clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1407                            sizeof (tr->localsid.as_u8));
1408               tr->behavior = ls3->behavior;
1409               if (ip3 == vlib_buffer_get_current (b3))
1410                 {
1411                   if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1412                       && sr3->type == ROUTING_HEADER_TYPE_SR)
1413                     {
1414                       clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1415                       tr->num_segments =
1416                         sr3->length * 8 / sizeof (ip6_address_t);
1417                       tr->segments_left = sr3->segments_left;
1418                     }
1419                 }
1420               else
1421                 tr->num_segments = 0xFF;
1422             }
1423
1424           vlib_increment_combined_counter
1425             (((next0 ==
1426                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1427               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1428              1, vlib_buffer_length_in_chain (vm, b0));
1429
1430           vlib_increment_combined_counter
1431             (((next1 ==
1432                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1433               &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1434              1, vlib_buffer_length_in_chain (vm, b1));
1435
1436           vlib_increment_combined_counter
1437             (((next2 ==
1438                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1439               &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1440              1, vlib_buffer_length_in_chain (vm, b2));
1441
1442           vlib_increment_combined_counter
1443             (((next3 ==
1444                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1445               &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1446              1, vlib_buffer_length_in_chain (vm, b3));
1447
1448           vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1449                                            n_left_to_next, bi0, bi1, bi2, bi3,
1450                                            next0, next1, next2, next3);
1451         }
1452
1453       /* Single loop for potentially the last three packets */
1454       while (n_left_from > 0 && n_left_to_next > 0)
1455         {
1456           u32 bi0;
1457           vlib_buffer_t *b0;
1458           ip6_header_t *ip0 = 0;
1459           ip6_ext_header_t *prev0;
1460           ip6_sr_header_t *sr0;
1461           u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1462           ip6_sr_localsid_t *ls0;
1463
1464           bi0 = from[0];
1465           to_next[0] = bi0;
1466           from += 1;
1467           to_next += 1;
1468           n_left_from -= 1;
1469           n_left_to_next -= 1;
1470
1471           b0 = vlib_get_buffer (vm, bi0);
1472           ip0 = vlib_buffer_get_current (b0);
1473           sr0 =
1474             ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1475
1476           /* Lookup the SR End behavior based on IP DA (adj) */
1477           ls0 =
1478             pool_elt_at_index (sm->localsids,
1479                                vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1480
1481           /* SRH processing */
1482           end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1483                               prev0);
1484
1485           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1486             {
1487               sr_localsid_trace_t *tr =
1488                 vlib_add_trace (vm, node, b0, sizeof (*tr));
1489               tr->num_segments = 0;
1490               clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1491                            sizeof (tr->localsid.as_u8));
1492               tr->behavior = ls0->behavior;
1493               if (ip0 == vlib_buffer_get_current (b0))
1494                 {
1495                   if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1496                       && sr0->type == ROUTING_HEADER_TYPE_SR)
1497                     {
1498                       clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1499                       tr->num_segments =
1500                         sr0->length * 8 / sizeof (ip6_address_t);
1501                       tr->segments_left = sr0->segments_left;
1502                     }
1503                 }
1504               else
1505                 tr->num_segments = 0xFF;
1506             }
1507
1508           vlib_increment_combined_counter
1509             (((next0 ==
1510                SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1511               &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1512              1, vlib_buffer_length_in_chain (vm, b0));
1513
1514           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1515                                            n_left_to_next, bi0, next0);
1516         }
1517       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1518     }
1519   return from_frame->n_vectors;
1520 }
1521
1522 /* *INDENT-OFF* */
1523 VLIB_REGISTER_NODE (sr_localsid_node) = {
1524   .function = sr_localsid_fn,
1525   .name = "sr-localsid",
1526   .vector_size = sizeof (u32),
1527   .format_trace = format_sr_localsid_trace,
1528   .type = VLIB_NODE_TYPE_INTERNAL,
1529   .n_errors = SR_LOCALSID_N_ERROR,
1530   .error_strings = sr_localsid_error_strings,
1531   .n_next_nodes = SR_LOCALSID_N_NEXT,
1532   .next_nodes = {
1533 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1534     foreach_sr_localsid_next
1535 #undef _
1536   },
1537 };
1538 /* *INDENT-ON* */
1539
1540 static u8 *
1541 format_sr_dpo (u8 * s, va_list * args)
1542 {
1543   index_t index = va_arg (*args, index_t);
1544   CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1545
1546   return (format (s, "SR: localsid_index:[%d]", index));
1547 }
1548
1549 const static dpo_vft_t sr_loc_vft = {
1550   .dv_lock = sr_dpo_lock,
1551   .dv_unlock = sr_dpo_unlock,
1552   .dv_format = format_sr_dpo,
1553 };
1554
1555 const static char *const sr_loc_ip6_nodes[] = {
1556   "sr-localsid",
1557   NULL,
1558 };
1559
1560 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1561   [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1562 };
1563
1564 const static char *const sr_loc_d_ip6_nodes[] = {
1565   "sr-localsid-d",
1566   NULL,
1567 };
1568
1569 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1570   [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1571 };
1572
1573
1574 /*************************** SR LocalSID plugins ******************************/
1575 /**
1576  * @brief SR LocalSID plugin registry
1577  */
1578 int
1579 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1580                                u8 * keyword_str, u8 * def_str,
1581                                u8 * params_str, u8 prefix_length,
1582                                dpo_type_t * dpo,
1583                                format_function_t * ls_format,
1584                                unformat_function_t * ls_unformat,
1585                                sr_plugin_callback_t * creation_fn,
1586                                sr_plugin_callback_t * removal_fn)
1587 {
1588   ip6_sr_main_t *sm = &sr_main;
1589   uword *p;
1590
1591   sr_localsid_fn_registration_t *plugin;
1592
1593   /* Did this function exist? If so update it */
1594   p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1595   if (p)
1596     {
1597       plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1598     }
1599   /* Else create a new one and set hash key */
1600   else
1601     {
1602       pool_get (sm->plugin_functions, plugin);
1603       hash_set_mem (sm->plugin_functions_by_key, fn_name,
1604                     plugin - sm->plugin_functions);
1605     }
1606
1607   clib_memset (plugin, 0, sizeof (*plugin));
1608
1609   plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1610   plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1611   plugin->prefix_length = prefix_length;
1612   plugin->ls_format = ls_format;
1613   plugin->ls_unformat = ls_unformat;
1614   plugin->creation = creation_fn;
1615   plugin->removal = removal_fn;
1616   clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1617   plugin->function_name = format (0, "%s%c", fn_name, 0);
1618   plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1619   plugin->def_str = format (0, "%s%c", def_str, 0);
1620   plugin->params_str = format (0, "%s%c", params_str, 0);
1621
1622   return plugin->sr_localsid_function_number;
1623 }
1624
1625 /**
1626  * @brief CLI function to 'show' all available SR LocalSID behaviors
1627  */
1628 static clib_error_t *
1629 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1630                                        unformat_input_t * input,
1631                                        vlib_cli_command_t * cmd)
1632 {
1633   ip6_sr_main_t *sm = &sr_main;
1634   sr_localsid_fn_registration_t *plugin;
1635   sr_localsid_fn_registration_t **plugins_vec = 0;
1636   int i;
1637
1638   vlib_cli_output (vm,
1639                    "SR LocalSIDs behaviors:\n-----------------------\n\n");
1640
1641   /* *INDENT-OFF* */
1642   pool_foreach (plugin, sm->plugin_functions,
1643     ({ vec_add1 (plugins_vec, plugin); }));
1644   /* *INDENT-ON* */
1645
1646   /* Print static behaviors */
1647   vlib_cli_output (vm, "Default behaviors:\n"
1648                    "\tEnd\t-> Endpoint.\n"
1649                    "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1650                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1651                    "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1652                    "\t\tParameters: '<fib_table>'\n"
1653                    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1654                    "\t\tParameters: '<iface>'\n"
1655                    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1656                    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1657                    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1658                    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1659                    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1660                    "\t\tParameters: '<ip6_fib_table>'\n"
1661                    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1662                    "\t\tParameters: '<ip4_fib_table>'\n");
1663   vlib_cli_output (vm, "Plugin behaviors:\n");
1664   for (i = 0; i < vec_len (plugins_vec); i++)
1665     {
1666       plugin = plugins_vec[i];
1667       vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1668                        plugin->def_str);
1669       vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1670     }
1671   return 0;
1672 }
1673
1674 /* *INDENT-OFF* */
1675 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1676   .path = "show sr localsids behaviors",
1677   .short_help = "show sr localsids behaviors",
1678   .function = show_sr_localsid_behaviors_command_fn,
1679 };
1680 /* *INDENT-ON* */
1681
1682 /**
1683  * @brief SR LocalSID initialization
1684  */
1685 clib_error_t *
1686 sr_localsids_init (vlib_main_t * vm)
1687 {
1688   /* Init memory for function keys */
1689   ip6_sr_main_t *sm = &sr_main;
1690   mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1691               sizeof (ip6_address_t));
1692   /* Init SR behaviors DPO type */
1693   sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1694   /* Init SR behaviors DPO type */
1695   sr_localsid_d_dpo_type =
1696     dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1697   /* Init memory for localsid plugins */
1698   sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1699   return 0;
1700 }
1701
1702 VLIB_INIT_FUNCTION (sr_localsids_init);
1703 /*
1704 * fd.io coding-style-patch-verification: ON
1705 *
1706 * Local Variables:
1707 * eval: (c-set-style "gnu")
1708 * End:
1709 */