ldp/ldp_global.c

   1
   2 /*
   3  *  Copyright (C) James R. Leu 2000
   4  *  jleu@mindspring.com
   5  *
   6  *  This software is covered under the LGPL, for more
   7  *  info check out http://www.gnu.org/copyleft/lgpl.html
   8  */
   9
  10 #include <stdlib.h>
  11 #include <netinet/in.h>
  12 #include "ldp_struct.h"
  13 #include "ldp_inet_addr.h"
  14 #include "ldp_session.h"
  15 #include "ldp_entity.h"
  16 #include "ldp_global.h"
  17 #include "ldp_nexthop.h"
  18 #include "ldp_outlabel.h"
  19 #include "ldp_inlabel.h"
  20 #include "ldp_hello.h"
  21 #include "ldp_peer.h"
  22 #include "ldp_attr.h"
  23 #include "ldp_addr.h"
  24 #include "ldp_adj.h"
  25 #include "ldp_fec.h"
  26 #include "ldp_if.h"
  27 #include "ldp_label_mapping.h"
  28 #include "ldp_tunnel.h"
  29 #include "ldp_resource.h"
  30 #include "ldp_hop_list.h"
  31
  32 #include "mpls_compare.h"
  33
  34 #include "mpls_socket_impl.h"
  35 #include "mpls_timer_impl.h"
  36 #include "mpls_ifmgr_impl.h"
  37 #include "mpls_tree_impl.h"
  38 #include "mpls_lock_impl.h"
  39 #include "mpls_fib_impl.h"
  40 #include "mpls_policy_impl.h"
  41 #include "mpls_mm_impl.h"
  42 #include "mpls_trace_impl.h"
  43
  44 #if MPLS_USE_LSR
  45 #include "lsr_cfg.h"
  46 #else
  47 #include "mpls_mpls_impl.h"
  48 #endif
  49
  50 void _ldp_global_ifmgr_callback(mpls_cfg_handle handle, const mpls_update_enum type, mpls_inet_addr *addr)
  51 {
  52   ldp_session *s = NULL;
  53   ldp_global *cfg = (ldp_global*)handle;
  54
  55   LDP_ENTER(cfg->user_data, "_ldp_global_ifmgr_callback");
  56
  57   mpls_lock_get(cfg->global_lock);
  58
  59   if (mpls_policy_address_export_check(cfg->user_data, addr) == MPLS_BOOL_TRUE) {
  60     s = MPLS_LIST_HEAD(&cfg->session);
  61     while (s != NULL) {
  62       switch (type) {
  63         case MPLS_UPDATE_ADD:
  64           LDP_TRACE_LOG(cfg->user_data, MPLS_TRACE_STATE_ALL,
  65             LDP_TRACE_FLAG_EVENT, "ADD\n");
  66           ldp_addr_send(cfg, s, addr);
  67           break;
  68         case MPLS_UPDATE_DEL:
  69           LDP_TRACE_LOG(cfg->user_data, MPLS_TRACE_STATE_ALL,
  70             LDP_TRACE_FLAG_EVENT, "DEL\n");
  71           ldp_waddr_send(cfg, s, addr);
  72           break;
  73         default:
  74           MPLS_ASSERT(0);
  75       }
  76       s = MPLS_LIST_NEXT(&cfg->session, s, _global);
  77     }
  78   }
  79
  80   mpls_lock_release(cfg->global_lock);
  81
  82   LDP_EXIT(cfg->user_data, "_ldp_global_ifmgr_callback");
  83 }
  84
  85 ldp_global *ldp_global_create(mpls_instance_handle data)
  86 {
  87   ldp_global *g = (ldp_global *) mpls_malloc(sizeof(ldp_global));
  88
  89   if (g) {
  90     memset(g, 0, sizeof(ldp_global));
  91
  92     LDP_ENTER(g->user_data, "ldp_global_create");
  93
  94     g->global_lock = mpls_lock_create("_ldp_global_lock_");
  95     mpls_lock_get(g->global_lock);
  96
  97     MPLS_LIST_INIT(&g->hop_list, ldp_hop_list);
  98     MPLS_LIST_INIT(&g->outlabel, ldp_outlabel);
  99     MPLS_LIST_INIT(&g->resource, ldp_resource);
 100     MPLS_LIST_INIT(&g->inlabel, ldp_inlabel);
 101     MPLS_LIST_INIT(&g->session, ldp_session);
 102     MPLS_LIST_INIT(&g->nexthop, ldp_nexthop);
 103     MPLS_LIST_INIT(&g->tunnel, ldp_tunnel);
 104     MPLS_LIST_INIT(&g->entity, ldp_entity);
 105     MPLS_LIST_INIT(&g->attr, ldp_attr);
 106     MPLS_LIST_INIT(&g->peer, ldp_peer);
 107     MPLS_LIST_INIT(&g->fec, ldp_fec);
 108     MPLS_LIST_INIT(&g->adj, ldp_adj);
 109     MPLS_LIST_INIT(&g->iff, ldp_if);
 110
 111     g->message_identifier = 1;
 112     g->configuration_sequence_number = 1;
 113     g->lsp_control_mode = LDP_GLOBAL_DEF_CONTROL_MODE;
 114     g->label_retention_mode = LDP_GLOBAL_DEF_RETENTION_MODE;
 115     g->lsp_repair_mode = LDP_GLOBAL_DEF_REPAIR_MODE;
 116     g->propagate_release = LDP_GLOBAL_DEF_PROPOGATE_RELEASE;
 117     g->label_merge = LDP_GLOBAL_DEF_LABEL_MERGE;
 118     g->loop_detection_mode = LDP_GLOBAL_DEF_LOOP_DETECTION_MODE;
 119     g->ttl_less_domain = LDP_GLOBAL_DEF_TTLLESS_DOMAIN;
 120     g->local_tcp_port = LDP_GLOBAL_DEF_LOCAL_TCP_PORT;
 121     g->local_udp_port = LDP_GLOBAL_DEF_LOCAL_UDP_PORT;
 122     g->send_address_messages = LDP_GLOBAL_DEF_SEND_ADDR_MSG;
 123     g->backoff_step = LDP_GLOBAL_DEF_BACKOFF_STEP;
 124     g->send_lsrid_mapping = LDP_GLOBAL_DEF_SEND_LSRID_MAPPING;
 125     g->no_route_to_peer_time = LDP_GLOBAL_DEF_NO_ROUTE_RETRY_TIME;
 126
 127     g->keepalive_timer = LDP_ENTITY_DEF_KEEPALIVE_TIMER;
 128     g->keepalive_interval = LDP_ENTITY_DEF_KEEPALIVE_INTERVAL;
 129     g->hellotime_timer = LDP_ENTITY_DEF_HELLOTIME_TIMER;
 130     g->hellotime_interval = LDP_ENTITY_DEF_HELLOTIME_INTERVAL;
 131
 132     g->admin_state = MPLS_ADMIN_DISABLE;
 133     g->user_data = data;
 134
 135     mpls_lock_release(g->global_lock);
 136
 137     LDP_EXIT(g->user_data, "ldp_global_create");
 138   }
 139
 140   return g;
 141 }
 142
 143 mpls_return_enum ldp_global_startup(ldp_global * g)
 144 {
 145   ldp_entity *e = NULL;
 146   mpls_dest dest;
 147
 148   MPLS_ASSERT(g != NULL);
 149
 150   LDP_ENTER(g->user_data, "ldp_global_startup");
 151
 152   if (g->lsr_identifier.type == MPLS_FAMILY_NONE) {
 153     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_ERROR,
 154       "ldp_global_startup: invalid LSRID\n");
 155     goto ldp_global_startup_cleanup;
 156   }
 157
 158   g->timer_handle = mpls_timer_open(g->user_data);
 159   if (mpls_timer_mgr_handle_verify(g->timer_handle) == MPLS_BOOL_FALSE) {
 160     goto ldp_global_startup_cleanup;
 161   }
 162
 163   g->socket_handle = mpls_socket_mgr_open(g->user_data);
 164   if (mpls_socket_mgr_handle_verify(g->socket_handle) == MPLS_BOOL_FALSE) {
 165     goto ldp_global_startup_cleanup;
 166   }
 167
 168   g->ifmgr_handle = mpls_ifmgr_open(g->user_data, g, _ldp_global_ifmgr_callback);
 169   if (mpls_ifmgr_handle_verify(g->ifmgr_handle) == MPLS_BOOL_FALSE) {
 170     goto ldp_global_startup_cleanup;
 171   }
 172
 173   g->fib_handle = mpls_fib_open(g->user_data, g);
 174   if (mpls_fib_handle_verify(g->fib_handle) == MPLS_BOOL_FALSE) {
 175     goto ldp_global_startup_cleanup;
 176   }
 177
 178 #if MPLS_USE_LSR
 179   if (!g->lsr_handle) {
 180     goto ldp_global_startup_cleanup;
 181   }
 182 #else
 183   g->mpls_handle = mpls_mpls_open(g->user_data);
 184   if (mpls_mpls_handle_verify(g->mpls_handle) == MPLS_BOOL_FALSE) {
 185     goto ldp_global_startup_cleanup;
 186   }
 187 #endif
 188
 189   g->addr_tree = mpls_tree_create(32);
 190   g->fec_tree = mpls_tree_create(32);
 191
 192   g->hello_socket = mpls_socket_create_udp(g->socket_handle);
 193   if (mpls_socket_handle_verify(g->socket_handle, g->hello_socket) == MPLS_BOOL_FALSE) {
 194     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 195       "ldp_global_startup: error creating UDP socket\n");
 196     goto ldp_global_startup_cleanup;
 197   }
 198
 199   dest.addr.type = MPLS_FAMILY_IPV4;
 200   dest.port = g->local_udp_port;
 201   dest.addr.u.ipv4 = INADDR_ANY;
 202   // dest.addr.u.ipv4 = INADDR_ALLRTRS_GROUP;
 203
 204   if (mpls_socket_bind(g->socket_handle, g->hello_socket, &dest) == MPLS_FAILURE) {
 205     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 206       "ldp_global_startup: error binding UDP socket\n");
 207     goto ldp_global_startup_cleanup;
 208   }
 209
 210   if (mpls_socket_options(g->socket_handle, g->hello_socket,
 211       MPLS_SOCKOP_NONBLOCK | MPLS_SOCKOP_REUSE) == MPLS_FAILURE) {
 212     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 213       "ldp_global_startup: error setting UDP socket options\n");
 214     goto ldp_global_startup_cleanup;
 215   }
 216   if (mpls_socket_multicast_options(g->socket_handle, g->hello_socket, 1, 0) ==
 217     MPLS_FAILURE) {
 218     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 219       "ldp_global_startup: error setting UDP socket multicast options\n");
 220     goto ldp_global_startup_cleanup;
 221   }
 222   mpls_socket_readlist_add(g->socket_handle, g->hello_socket, 0, MPLS_SOCKET_UDP_DATA);
 223
 224   g->listen_socket = mpls_socket_create_tcp(g->socket_handle);
 225   if (mpls_socket_handle_verify(g->socket_handle, g->listen_socket) == MPLS_BOOL_FALSE) {
 226     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 227       "ldp_global_startup: error creating TCP socket\n");
 228     goto ldp_global_startup_cleanup;
 229   }
 230   if (mpls_socket_options(g->socket_handle, g->listen_socket,
 231       MPLS_SOCKOP_NONBLOCK | MPLS_SOCKOP_REUSE) == MPLS_FAILURE) {
 232     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 233       "ldp_global_startup: error setting TCP socket options\n");
 234     goto ldp_global_startup_cleanup;
 235   }
 236
 237   dest.addr.type = MPLS_FAMILY_IPV4;
 238   dest.port = g->local_tcp_port;
 239   dest.addr.u.ipv4 = INADDR_ANY;
 240
 241   if (mpls_socket_bind(g->socket_handle, g->listen_socket, &dest) == MPLS_FAILURE) {
 242     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 243       "ldp_global_startup: error binding TCP socket\n");
 244     goto ldp_global_startup_cleanup;
 245   }
 246
 247   if (mpls_socket_tcp_listen(g->socket_handle, g->listen_socket, 15) ==
 248     MPLS_FAILURE) {
 249     LDP_TRACE_LOG(g->user_data, MPLS_TRACE_STATE_ALL, LDP_TRACE_FLAG_DEBUG,
 250       "ldp_global_startup: error setting listen buffer for TCP socket\n");
 251     goto ldp_global_startup_cleanup;
 252   }
 253
 254   mpls_socket_readlist_add(g->socket_handle, g->listen_socket, 0,
 255     MPLS_SOCKET_TCP_LISTEN);
 256
 257   e = MPLS_LIST_HEAD(&g->entity);
 258   while (e != NULL) {
 259     ldp_entity_startup(g, e);
 260     e = MPLS_LIST_NEXT(&g->entity, e, _global);
 261   }
 262
 263   g->admin_state = MPLS_ADMIN_ENABLE;
 264
 265   LDP_EXIT(g->user_data, "ldp_global_startup");
 266   return MPLS_SUCCESS;
 267
 268 ldp_global_startup_cleanup:
 269   ldp_global_shutdown(g);
 270   mpls_socket_close(g->socket_handle, g->hello_socket);
 271   mpls_socket_close(g->socket_handle, g->listen_socket);
 272   g->hello_socket = 0;
 273   g->listen_socket = 0;
 274
 275   LDP_EXIT(g->user_data, "ldp_global_startup-error");
 276
 277   return MPLS_FAILURE;
 278 }
 279
 280 mpls_return_enum ldp_global_shutdown(ldp_global * g)
 281 {
 282   ldp_entity *e = NULL;
 283
 284   MPLS_ASSERT(g);
 285
 286   LDP_ENTER(g->user_data, "ldp_global_shutdown");
 287
 288   e = MPLS_LIST_HEAD(&g->entity);
 289   while (e != NULL) {
 290     ldp_entity_shutdown(g, e, 1);
 291     e = MPLS_LIST_NEXT(&g->entity, e, _global);
 292   }
 293
 294   g->admin_state = MPLS_ADMIN_DISABLE;
 295
 296   mpls_socket_readlist_del(g->socket_handle, g->hello_socket);
 297   mpls_socket_close(g->socket_handle, g->hello_socket);
 298
 299   mpls_socket_readlist_del(g->socket_handle, g->listen_socket);
 300   mpls_socket_close(g->socket_handle, g->listen_socket);
 301
 302   mpls_tree_delete(g->addr_tree);
 303   mpls_tree_delete(g->fec_tree);
 304
 305   mpls_lock_release(g->global_lock);
 306   mpls_timer_close(g->timer_handle);
 307   mpls_lock_get(g->global_lock);
 308
 309   mpls_socket_mgr_close(g->socket_handle);
 310   mpls_ifmgr_close(g->ifmgr_handle);
 311   mpls_fib_close(g->fib_handle);
 312
 313 #if MPLS_USE_LSR
 314 #else
 315   mpls_mpls_close(g->mpls_handle);
 316 #endif
 317
 318   LDP_EXIT(g->user_data, "ldp_global_shutdown");
 319
 320   return MPLS_SUCCESS;
 321 }
 322
 323 mpls_return_enum ldp_global_delete(ldp_global * g)
 324 {
 325   if (g) {
 326     mpls_lock_delete(g->global_lock);
 327     LDP_PRINT(g->user_data, "global delete\n");
 328     mpls_free(g);
 329   }
 330   return MPLS_SUCCESS;
 331 }
 332
 333 void _ldp_global_add_attr(ldp_global * g, ldp_attr * a)
 334 {
 335   ldp_attr *ap = NULL;
 336
 337   MPLS_ASSERT(g && a);
 338   MPLS_REFCNT_HOLD(a);
 339   ap = MPLS_LIST_HEAD(&g->attr);
 340   while (ap != NULL) {
 341     if (ap->index > a->index) {
 342       MPLS_LIST_INSERT_BEFORE(&g->attr, ap, a, _global);
 343       return;
 344     }
 345     ap = MPLS_LIST_NEXT(&g->attr, ap, _global);
 346   }
 347   MPLS_LIST_ADD_TAIL(&g->attr, a, _global, ldp_attr);
 348 }
 349
 350 void _ldp_global_del_attr(ldp_global * g, ldp_attr * a)
 351 {
 352   MPLS_ASSERT(g && a);
 353   MPLS_LIST_REMOVE(&g->attr, a, _global);
 354   MPLS_REFCNT_RELEASE(a, ldp_attr_delete);
 355 }
 356
 357 void _ldp_global_add_peer(ldp_global * g, ldp_peer * p)
 358 {
 359   ldp_peer *pp = NULL;
 360
 361   MPLS_ASSERT(g && p);
 362   MPLS_REFCNT_HOLD(p);
 363   pp = MPLS_LIST_HEAD(&g->peer);
 364   while (pp != NULL) {
 365     if (pp->index > p->index) {
 366       MPLS_LIST_INSERT_BEFORE(&g->peer, pp, p, _global);
 367       return;
 368     }
 369     pp = MPLS_LIST_NEXT(&g->peer, pp, _global);
 370   }
 371   MPLS_LIST_ADD_TAIL(&g->peer, p, _global, ldp_peer);
 372 }
 373
 374 void _ldp_global_del_peer(ldp_global * g, ldp_peer * p)
 375 {
 376   MPLS_ASSERT(g && p);
 377   MPLS_LIST_REMOVE(&g->peer, p, _global);
 378   MPLS_REFCNT_RELEASE(p, ldp_peer_delete);
 379 }
 380
 381 void _ldp_global_add_if(ldp_global * g, ldp_if * i)
 382 {
 383   ldp_if *ip = NULL;
 384
 385   MPLS_ASSERT(g && i);
 386   MPLS_REFCNT_HOLD(i);
 387   ip = MPLS_LIST_HEAD(&g->iff);
 388   while (ip != NULL) {
 389     if (ip->index > i->index) {
 390       MPLS_LIST_INSERT_BEFORE(&g->iff, ip, i, _global);
 391       return;
 392     }
 393     ip = MPLS_LIST_NEXT(&g->iff, ip, _global);
 394   }
 395   MPLS_LIST_ADD_TAIL(&g->iff, i, _global, ldp_if);
 396 }
 397
 398 void _ldp_global_del_if(ldp_global * g, ldp_if * i)
 399 {
 400   MPLS_ASSERT(g && i);
 401   MPLS_LIST_REMOVE(&g->iff, i, _global);
 402   MPLS_REFCNT_RELEASE(i, ldp_if_delete);
 403 }
 404
 405 void _ldp_global_add_adj(ldp_global * g, ldp_adj * a)
 406 {
 407   ldp_adj *ap = NULL;
 408
 409   MPLS_ASSERT(g && a);
 410   MPLS_REFCNT_HOLD(a);
 411   ap = MPLS_LIST_HEAD(&g->adj);
 412   while (ap != NULL) {
 413     if (ap->index > a->index) {
 414       MPLS_LIST_INSERT_BEFORE(&g->adj, ap, a, _global);
 415       return;
 416     }
 417     ap = MPLS_LIST_NEXT(&g->adj, ap, _global);
 418   }
 419   MPLS_LIST_ADD_TAIL(&g->adj, a, _global, ldp_adj);
 420 }
 421
 422 void _ldp_global_del_adj(ldp_global * g, ldp_adj * a)
 423 {
 424   MPLS_ASSERT(g && a);
 425   MPLS_LIST_REMOVE(&g->adj, a, _global);
 426   MPLS_REFCNT_RELEASE(a, ldp_adj_delete);
 427 }
 428
 429 void _ldp_global_add_entity(ldp_global * g, ldp_entity * e)
 430 {
 431   ldp_entity *ep = NULL;
 432
 433   MPLS_ASSERT(g && e);
 434   MPLS_REFCNT_HOLD(e);
 435   ep = MPLS_LIST_HEAD(&g->entity);
 436   while (ep != NULL) {
 437     if (ep->index > e->index) {
 438       MPLS_LIST_INSERT_BEFORE(&g->entity, ep, e, _global);
 439       return;
 440     }
 441     ep = MPLS_LIST_NEXT(&g->entity, ep, _global);
 442   }
 443   MPLS_LIST_ADD_TAIL(&g->entity, e, _global, ldp_entity);
 444 }
 445
 446 void _ldp_global_del_entity(ldp_global * g, ldp_entity * e)
 447 {
 448   MPLS_ASSERT(g && e);
 449   MPLS_LIST_REMOVE(&g->entity, e, _global);
 450   MPLS_REFCNT_RELEASE(e, ldp_entity_delete);
 451 }
 452
 453 void _ldp_global_add_session(ldp_global * g, ldp_session * s)
 454 {
 455   ldp_session *sp = NULL;
 456
 457   MPLS_ASSERT(g && s);
 458   MPLS_REFCNT_HOLD(s);
 459   s->on_global = MPLS_BOOL_TRUE;
 460   sp = MPLS_LIST_HEAD(&g->session);
 461   while (sp != NULL) {
 462     if (sp->index > s->index) {
 463       MPLS_LIST_INSERT_BEFORE(&g->session, sp, s, _global);
 464       return;
 465     }
 466     sp = MPLS_LIST_NEXT(&g->session, sp, _global);
 467   }
 468   MPLS_LIST_ADD_TAIL(&g->session, s, _global, ldp_session);
 469 }
 470
 471 void _ldp_global_del_session(ldp_global * g, ldp_session * s)
 472 {
 473   MPLS_ASSERT(g && s);
 474   MPLS_ASSERT(s->on_global == MPLS_BOOL_TRUE);
 475   MPLS_LIST_REMOVE(&g->session, s, _global);
 476   s->on_global = MPLS_BOOL_FALSE;
 477   MPLS_REFCNT_RELEASE(s, ldp_session_delete);
 478 }
 479
 480 mpls_return_enum _ldp_global_add_inlabel(ldp_global * g, ldp_inlabel * i)
 481 {
 482   ldp_inlabel *ip = NULL;
 483   mpls_return_enum result;
 484
 485   MPLS_ASSERT(g && i);
 486
 487 #if MPLS_USE_LSR
 488   {
 489     lsr_insegment iseg;
 490     memcpy(&iseg.info,&i->info,sizeof(mpls_insegment));
 491     result = lsr_cfg_insegment_set(g->lsr_handle, &iseg, LSR_CFG_ADD|
 492       LSR_INSEGMENT_CFG_NPOP|LSR_INSEGMENT_CFG_FAMILY|
 493       LSR_INSEGMENT_CFG_LABELSPACE|LSR_INSEGMENT_CFG_LABEL|
 494       LSR_INSEGMENT_CFG_OWNER);
 495     memcpy(&i->info, &iseg.info, sizeof(mpls_insegment));
 496     i->info.handle = iseg.index;
 497   }
 498 #else
 499   result = mpls_mpls_insegment_add(g->mpls_handle, &i->info);
 500 #endif
 501   if (result != MPLS_SUCCESS) {
 502     return result;
 503   }
 504
 505   MPLS_REFCNT_HOLD(i);
 506   ip = MPLS_LIST_HEAD(&g->inlabel);
 507   while (ip != NULL) {
 508     if (ip->index > i->index) {
 509       MPLS_LIST_INSERT_BEFORE(&g->inlabel, ip, i, _global);
 510       return MPLS_SUCCESS;
 511     }
 512     ip = MPLS_LIST_NEXT(&g->inlabel, ip, _global);
 513   }
 514   MPLS_LIST_ADD_TAIL(&g->inlabel, i, _global, ldp_inlabel);
 515   return MPLS_SUCCESS;
 516 }
 517
 518 mpls_return_enum _ldp_global_del_inlabel(ldp_global * g, ldp_inlabel * i)
 519 {
 520   MPLS_ASSERT(g && i);
 521   MPLS_ASSERT(i->reuse_count == 0);
 522 #if MPLS_USE_LSR
 523   {
 524     lsr_insegment iseg;
 525     iseg.index = i->info.handle;
 526     lsr_cfg_insegment_set(g->lsr_handle, &iseg, LSR_CFG_DEL);
 527   }
 528 #else
 529   mpls_mpls_insegment_del(g->mpls_handle, &i->info);
 530 #endif
 531   MPLS_LIST_REMOVE(&g->inlabel, i, _global);
 532   MPLS_REFCNT_RELEASE(i, ldp_inlabel_delete);
 533   return MPLS_SUCCESS;
 534 }
 535
 536 mpls_return_enum _ldp_global_add_outlabel(ldp_global * g, ldp_outlabel * o)
 537 {
 538   ldp_outlabel *op = NULL;
 539   mpls_return_enum result;
 540
 541   MPLS_ASSERT(g && o);
 542 #if MPLS_USE_LSR
 543   {
 544     lsr_outsegment oseg;
 545     memcpy(&oseg.info, &o->info, sizeof(mpls_outsegment));
 546     result = lsr_cfg_outsegment_set(g->lsr_handle, &oseg, LSR_CFG_ADD|
 547       LSR_OUTSEGMENT_CFG_PUSH_LABEL|LSR_OUTSEGMENT_CFG_OWNER|
 548       LSR_OUTSEGMENT_CFG_INTERFACE|LSR_OUTSEGMENT_CFG_LABEL|
 549       LSR_OUTSEGMENT_CFG_NEXTHOP);
 550     o->info.handle = oseg.index;
 551   }
 552 #else
 553   result = mpls_mpls_outsegment_add(g->mpls_handle, &o->info);
 554 #endif
 555
 556   if (result != MPLS_SUCCESS) {
 557     return result;
 558   }
 559
 560   MPLS_REFCNT_HOLD(o);
 561   o->switching = MPLS_BOOL_TRUE;
 562   op = MPLS_LIST_HEAD(&g->outlabel);
 563   while (op != NULL) {
 564     if (op->index > o->index) {
 565       MPLS_LIST_INSERT_BEFORE(&g->outlabel, op, o, _global);
 566       return MPLS_SUCCESS;
 567     }
 568     op = MPLS_LIST_NEXT(&g->outlabel, op, _global);
 569   }
 570   MPLS_LIST_ADD_TAIL(&g->outlabel, o, _global, ldp_outlabel);
 571   return MPLS_SUCCESS;
 572 }
 573
 574 mpls_return_enum _ldp_global_del_outlabel(ldp_global * g, ldp_outlabel * o)
 575 {
 576   MPLS_ASSERT(g && o);
 577 #if MPLS_USE_LSR
 578   {
 579     lsr_outsegment oseg;
 580     oseg.index = o->info.handle;
 581     lsr_cfg_outsegment_set(g->lsr_handle, &oseg, LSR_CFG_DEL);
 582   }
 583 #else
 584   mpls_mpls_outsegment_del(g->mpls_handle, &o->info);
 585 #endif
 586
 587   o->switching = MPLS_BOOL_FALSE;
 588   MPLS_ASSERT(o->merge_count == 0);
 589   MPLS_LIST_REMOVE(&g->outlabel, o, _global);
 590   MPLS_REFCNT_RELEASE(o, ldp_outlabel_delete);
 591   return MPLS_SUCCESS;
 592 }
 593
 594 mpls_return_enum ldp_global_find_attr_index(ldp_global * g, uint32_t index,
 595   ldp_attr ** attr)
 596 {
 597   ldp_attr *a = NULL;
 598
 599   if (g && index > 0) {
 600
 601     /* because we sort our inserts by index, this lets us know
 602        if we've "walked" past the end of the list */
 603
 604     a = MPLS_LIST_TAIL(&g->attr);
 605     if (a == NULL || a->index < index) {
 606       return MPLS_END_OF_LIST;
 607       *attr = NULL;
 608     }
 609
 610     a = MPLS_LIST_HEAD(&g->attr);
 611     while (a != NULL) {
 612       if (a->index == index) {
 613         *attr = a;
 614         return MPLS_SUCCESS;
 615       }
 616       a = MPLS_LIST_NEXT(&g->attr, a, _global);
 617     }
 618   }
 619   *attr = NULL;
 620   return MPLS_FAILURE;
 621 }
 622
 623 mpls_return_enum ldp_global_find_session_index(ldp_global * g, uint32_t index,
 624   ldp_session ** session)
 625 {
 626   ldp_session *s = NULL;
 627
 628   if (g && index > 0) {
 629
 630     /* because we sort our inserts by index, this lets us know
 631        if we've "walked" past the end of the list */
 632
 633     s = MPLS_LIST_TAIL(&g->session);
 634     if (s == NULL || s->index < index) {
 635       *session = NULL;
 636       return MPLS_END_OF_LIST;
 637     }
 638
 639     s = MPLS_LIST_HEAD(&g->session);
 640     while (s != NULL) {
 641       if (s->index == index) {
 642         *session = s;
 643         return MPLS_SUCCESS;
 644       }
 645       s = MPLS_LIST_NEXT(&g->session, s, _global);
 646     }
 647   }
 648   *session = NULL;
 649   return MPLS_FAILURE;
 650 }
 651
 652 mpls_return_enum ldp_global_find_inlabel_index(ldp_global * g, uint32_t index,
 653   ldp_inlabel ** inlabel)
 654 {
 655   ldp_inlabel *i = NULL;
 656
 657   if (g && index > 0) {
 658
 659     /* because we sort our inserts by index, this lets us know
 660        if we've "walked" past the end of the list */
 661
 662     i = MPLS_LIST_TAIL(&g->inlabel);
 663     if (i == NULL || i->index < index) {
 664       *inlabel = NULL;
 665       return MPLS_END_OF_LIST;
 666     }
 667
 668     i = MPLS_LIST_HEAD(&g->inlabel);
 669     while (i != NULL) {
 670       if (i->index == index) {
 671         *inlabel = i;
 672         return MPLS_SUCCESS;
 673       }
 674       i = MPLS_LIST_NEXT(&g->inlabel, i, _global);
 675     }
 676   }
 677   *inlabel = NULL;
 678   return MPLS_FAILURE;
 679 }
 680
 681 mpls_return_enum ldp_global_find_outlabel_index(ldp_global * g, uint32_t index,
 682   ldp_outlabel ** outlabel)
 683 {
 684   ldp_outlabel *o = NULL;
 685
 686   if (g && index > 0) {
 687
 688     /* because we sort our inserts by index, this lets us know
 689        if we've "walked" past the end of the list */
 690
 691     o = MPLS_LIST_TAIL(&g->outlabel);
 692     if (o == NULL || o->index < index) {
 693       *outlabel = NULL;
 694       return MPLS_END_OF_LIST;
 695     }
 696
 697     o = MPLS_LIST_HEAD(&g->outlabel);
 698     while (o != NULL) {
 699       if (o->index == index) {
 700         *outlabel = o;
 701         return MPLS_SUCCESS;
 702       }
 703       o = MPLS_LIST_NEXT(&g->outlabel, o, _global);
 704     }
 705   }
 706   *outlabel = NULL;
 707   return MPLS_FAILURE;
 708 }
 709
 710 ldp_outlabel *ldp_global_find_outlabel_handle(ldp_global * g,
 711   mpls_outsegment_handle handle)
 712 {
 713   ldp_outlabel *o = MPLS_LIST_HEAD(&g->outlabel);
 714
 715   if (g) {
 716     while (o != NULL) {
 717       if (!mpls_outsegment_handle_compare(o->info.handle, handle))
 718         return o;
 719
 720       o = MPLS_LIST_NEXT(&g->outlabel, o, _global);
 721     }
 722   }
 723   return NULL;
 724 }
 725
 726 mpls_return_enum ldp_global_find_entity_index(ldp_global * g, uint32_t index,
 727   ldp_entity ** entity)
 728 {
 729   ldp_entity *e = NULL;
 730
 731   if (g && index > 0) {
 732
 733     /* because we sort our inserts by index, this lets us know
 734        if we've "walked" past the end of the list */
 735
 736     e = MPLS_LIST_TAIL(&g->entity);
 737     if (e == NULL || e->index < index) {
 738       *entity = NULL;
 739       return MPLS_END_OF_LIST;
 740     }
 741
 742     e = MPLS_LIST_HEAD(&g->entity);
 743     while (e != NULL) {
 744       if (e->index == index) {
 745         *entity = e;
 746         return MPLS_SUCCESS;
 747       }
 748       e = MPLS_LIST_NEXT(&g->entity, e, _global);
 749     }
 750   }
 751   *entity = NULL;
 752   return MPLS_FAILURE;
 753 }
 754
 755 ldp_peer *ldp_global_find_peer_addr(ldp_global * g, mpls_inet_addr * addr)
 756 {
 757   ldp_peer *p;
 758
 759   MPLS_ASSERT(g && addr);
 760
 761   /* JLEU: we will need to add a tree to optimize this search,
 762      known peers will be in tree, unknown will take a "slow path" to
 763      verify them, then be added to tree */
 764
 765   p = MPLS_LIST_HEAD(&g->peer);
 766   while (p) {
 767     LDP_PRINT(g->user_data,
 768       "ldp_global_find_peer_lsrid: peer: %08x lsrid: %08x\n",
 769       p->dest.addr.u.ipv4, addr->u.ipv4);
 770     if (!mpls_inet_addr_compare(&p->dest.addr, addr)) {
 771       return p;
 772     }
 773     p = MPLS_LIST_NEXT(&g->peer, p, _global);
 774   }
 775   return NULL;
 776 }
 777
 778 mpls_return_enum ldp_global_find_adj_index(ldp_global * g, uint32_t index,
 779   ldp_adj ** adj)
 780 {
 781   ldp_adj *a = NULL;
 782
 783   if (g && index > 0) {
 784     /* because we sort our inserts by index, this lets us know
 785        if we've "walked" past the end of the list */
 786
 787     a = MPLS_LIST_TAIL(&g->adj);
 788     if (a == NULL || a->index < index) {
 789       return MPLS_END_OF_LIST;
 790       *adj = NULL;
 791     }
 792
 793     a = MPLS_LIST_HEAD(&g->adj);
 794     while (a != NULL) {
 795       if (a->index == index) {
 796         *adj = a;
 797         return MPLS_SUCCESS;
 798       }
 799       a = MPLS_LIST_NEXT(&g->adj, a, _global);
 800     }
 801   }
 802   *adj = NULL;
 803   return MPLS_FAILURE;
 804 }
 805
 806 mpls_return_enum ldp_global_find_peer_index(ldp_global * g, uint32_t index,
 807   ldp_peer ** peer)
 808 {
 809   ldp_peer *p = NULL;
 810
 811   if (g && index > 0) {
 812     /* because we sort our inserts by index, this lets us know
 813        if we've "walked" past the end of the list */
 814
 815     p = MPLS_LIST_TAIL(&g->peer);
 816     if (p == NULL || p->index < index) {
 817       *peer = NULL;
 818       return MPLS_END_OF_LIST;
 819     }
 820
 821     p = MPLS_LIST_HEAD(&g->peer);
 822     while (p != NULL) {
 823       if (p->index == index) {
 824         *peer = p;
 825         return MPLS_SUCCESS;
 826       }
 827       p = MPLS_LIST_NEXT(&g->peer, p, _global);
 828     }
 829   }
 830   *peer = NULL;
 831   return MPLS_FAILURE;
 832 }
 833
 834 mpls_return_enum ldp_global_find_fec_index(ldp_global * g, uint32_t index,
 835   ldp_fec ** fec)
 836 {
 837   ldp_fec *f = NULL;
 838
 839   if (g && index > 0) {
 840     /* because we sort our inserts by index, this lets us know
 841        if we've "walked" past the end of the list */
 842
 843     f = MPLS_LIST_TAIL(&g->fec);
 844     if (f == NULL || f->index < index) {
 845       *fec = NULL;
 846       return MPLS_END_OF_LIST;
 847     }
 848
 849     f = MPLS_LIST_HEAD(&g->fec);
 850     while (f != NULL) {
 851       if (f->index == index) {
 852         *fec = f;
 853         return MPLS_SUCCESS;
 854       }
 855       f = MPLS_LIST_NEXT(&g->fec, f, _global);
 856     }
 857   }
 858   *fec = NULL;
 859   return MPLS_FAILURE;
 860 }
 861
 862 mpls_return_enum ldp_global_find_fec(ldp_global * g, mpls_fec * m,
 863   ldp_fec ** fec)
 864 {
 865   ldp_fec *f = NULL;
 866
 867   MPLS_ASSERT(g && m);
 868
 869   f = MPLS_LIST_HEAD(&g->fec);
 870   do {
 871     if (!mpls_fec_compare(m, &f->info)) {
 872       *fec = f;
 873       return MPLS_SUCCESS;
 874     }
 875   } while((f = MPLS_LIST_NEXT(&g->fec, f, _global)));
 876   *fec = NULL;
 877   return MPLS_FAILURE;
 878 }
 879
 880 mpls_return_enum ldp_global_find_if_index(ldp_global * g, uint32_t index,
 881   ldp_if ** iff)
 882 {
 883   ldp_if *i = NULL;
 884
 885   if (g && index > 0) {
 886
 887     /* because we sort our inserts by index, this lets us know
 888        if we've "walked" past the end of the list */
 889
 890     i = MPLS_LIST_TAIL(&g->iff);
 891     if (i == NULL || i->index < index) {
 892       *iff = NULL;
 893       return MPLS_END_OF_LIST;
 894     }
 895
 896     i = MPLS_LIST_HEAD(&g->iff);
 897     while (i != NULL) {
 898       if (i->index == index) {
 899         *iff = i;
 900         return MPLS_SUCCESS;
 901       }
 902       i = MPLS_LIST_NEXT(&g->iff, i, _global);
 903     }
 904   }
 905   *iff = NULL;
 906   return MPLS_FAILURE;
 907 }
 908
 909 ldp_if *ldp_global_find_if_handle(ldp_global * g, mpls_if_handle handle)
 910 {
 911   ldp_if *i = MPLS_LIST_HEAD(&g->iff);
 912
 913   if (g) {
 914     while (i != NULL) {
 915       if (!mpls_if_handle_compare(i->handle, handle))
 916         return i;
 917
 918       i = MPLS_LIST_NEXT(&g->iff, i, _global);
 919     }
 920   }
 921   return NULL;
 922 }
 923
 924 ldp_adj *ldp_global_find_adj_ldpid(ldp_global * g, mpls_inet_addr * lsraddr,
 925   int labelspace)
 926 {
 927
 928   ldp_adj *a = MPLS_LIST_HEAD(&g->adj);
 929
 930   while (a != NULL) {
 931     if ((!mpls_inet_addr_compare(lsraddr, &a->remote_lsr_address)) &&
 932       labelspace == a->remote_label_space)
 933       return a;
 934
 935     a = MPLS_LIST_NEXT(&g->adj, a, _global);
 936   }
 937   return NULL;
 938 }
 939
 940 mpls_return_enum ldp_global_find_tunnel_index(ldp_global * g, uint32_t index,
 941   ldp_tunnel ** tunnel)
 942 {
 943   ldp_tunnel *t = NULL;
 944
 945   if (g && index > 0) {
 946     /* because we sort our inserts by index, this lets us know
 947        if we've "walked" past the end of the list */
 948
 949     t = MPLS_LIST_TAIL(&g->tunnel);
 950     if (t == NULL || t->index < index) {
 951       *tunnel = NULL;
 952       return MPLS_END_OF_LIST;
 953     }
 954
 955     t = MPLS_LIST_HEAD(&g->tunnel);
 956     while (t != NULL) {
 957       if (t->index == index) {
 958         *tunnel = t;
 959         return MPLS_SUCCESS;
 960       }
 961       t = MPLS_LIST_NEXT(&g->tunnel, t, _global);
 962     }
 963   }
 964   *tunnel = NULL;
 965   return MPLS_FAILURE;
 966 }
 967
 968 mpls_return_enum ldp_global_find_resource_index(ldp_global * g, uint32_t index,
 969   ldp_resource ** resource)
 970 {
 971   ldp_resource *r = NULL;
 972
 973   if (g && index > 0) {
 974     /* because we sort our inserts by index, this lets us know
 975        if we've "walked" past the end of the list */
 976
 977     r = MPLS_LIST_TAIL(&g->resource);
 978     if (r == NULL || r->index < index) {
 979       *resource = NULL;
 980       return MPLS_END_OF_LIST;
 981     }
 982
 983     r = MPLS_LIST_HEAD(&g->resource);
 984     while (r != NULL) {
 985       if (r->index == index) {
 986         *resource = r;
 987         return MPLS_SUCCESS;
 988       }
 989       r = MPLS_LIST_NEXT(&g->resource, r, _global);
 990     }
 991   }
 992   *resource = NULL;
 993   return MPLS_FAILURE;
 994 }
 995
 996 mpls_return_enum ldp_global_find_hop_list_index(ldp_global * g, uint32_t index,
 997   ldp_hop_list ** hop_list)
 998 {
 999   ldp_hop_list *h = NULL;
1000
1001   if (g && index > 0) {
1002     /* because we sort our inserts by index, this lets us know
1003        if we've "walked" past the end of the list */
1004
1005     h = MPLS_LIST_TAIL(&g->hop_list);
1006     if (h == NULL || h->index < index) {
1007       *hop_list = NULL;
1008       return MPLS_END_OF_LIST;
1009     }
1010
1011     h = MPLS_LIST_HEAD(&g->hop_list);
1012     while (h != NULL) {
1013       if (h->index == index) {
1014         *hop_list = h;
1015         return MPLS_SUCCESS;
1016       }
1017       h = MPLS_LIST_NEXT(&g->hop_list, h, _global);
1018     }
1019   }
1020   *hop_list = NULL;
1021   return MPLS_FAILURE;
1022 }
1023
1024 void _ldp_global_add_tunnel(ldp_global * g, ldp_tunnel * t)
1025 {
1026   ldp_tunnel *tp = NULL;
1027
1028   MPLS_ASSERT(g && t);
1029   MPLS_REFCNT_HOLD(t);
1030   tp = MPLS_LIST_HEAD(&g->tunnel);
1031   while (tp != NULL) {
1032     if (tp->index > t->index) {
1033       MPLS_LIST_INSERT_BEFORE(&g->tunnel, tp, t, _global);
1034       return;
1035     }
1036     tp = MPLS_LIST_NEXT(&g->tunnel, tp, _global);
1037   }
1038   MPLS_LIST_ADD_TAIL(&g->tunnel, t, _global, ldp_tunnel);
1039 }
1040
1041 void _ldp_global_del_tunnel(ldp_global * g, ldp_tunnel * t)
1042 {
1043   MPLS_ASSERT(g && t);
1044   MPLS_LIST_REMOVE(&g->tunnel, t, _global);
1045   MPLS_REFCNT_RELEASE(t, ldp_tunnel_delete);
1046 }
1047
1048 void _ldp_global_add_resource(ldp_global * g, ldp_resource * r)
1049 {
1050   ldp_resource *rp = NULL;
1051
1052   MPLS_ASSERT(g && r);
1053   MPLS_REFCNT_HOLD(r);
1054   rp = MPLS_LIST_HEAD(&g->resource);
1055   while (rp != NULL) {
1056     if (rp->index > r->index) {
1057       MPLS_LIST_INSERT_BEFORE(&g->resource, rp, r, _global);
1058       return;
1059     }
1060     rp = MPLS_LIST_NEXT(&g->resource, rp, _global);
1061   }
1062   MPLS_LIST_ADD_TAIL(&g->resource, r, _global, ldp_resource);
1063 }
1064
1065 void _ldp_global_del_resource(ldp_global * g, ldp_resource * r)
1066 {
1067   MPLS_ASSERT(g && r);
1068   MPLS_LIST_REMOVE(&g->resource, r, _global);
1069   MPLS_REFCNT_RELEASE(r, ldp_resource_delete);
1070 }
1071
1072 void _ldp_global_add_hop_list(ldp_global * g, ldp_hop_list * h)
1073 {
1074   ldp_hop_list *hp = NULL;
1075
1076   MPLS_ASSERT(g && h);
1077   MPLS_REFCNT_HOLD(h);
1078   hp = MPLS_LIST_HEAD(&g->hop_list);
1079   while (hp != NULL) {
1080     if (hp->index > h->index) {
1081       MPLS_LIST_INSERT_BEFORE(&g->hop_list, hp, h, _global);
1082       return;
1083     }
1084     hp = MPLS_LIST_NEXT(&g->hop_list, hp, _global);
1085   }
1086   MPLS_LIST_ADD_TAIL(&g->hop_list, h, _global, ldp_hop_list);
1087 }
1088
1089 void _ldp_global_del_hop_list(ldp_global * g, ldp_hop_list * h)
1090 {
1091   MPLS_ASSERT(g && h);
1092   MPLS_LIST_REMOVE(&g->hop_list, h, _global);
1093   MPLS_REFCNT_RELEASE(h, ldp_hop_list_delete);
1094 }
1095
1096 void _ldp_global_add_fec(ldp_global * g, ldp_fec * f)
1097 {
1098   ldp_fec *fp = NULL;
1099
1100   MPLS_ASSERT(g && f);
1101   MPLS_REFCNT_HOLD(f);
1102   fp = MPLS_LIST_HEAD(&g->fec);
1103   while (fp != NULL) {
1104     if (fp->index > f->index) {
1105       MPLS_LIST_INSERT_BEFORE(&g->fec, fp, f, _global);
1106       return;
1107     }
1108     fp = MPLS_LIST_NEXT(&g->fec, fp, _global);
1109   }
1110   MPLS_LIST_ADD_TAIL(&g->fec, f, _global, ldp_fec);
1111 }
1112
1113 void _ldp_global_del_fec(ldp_global * g, ldp_fec * f)
1114 {
1115   MPLS_ASSERT(g && f);
1116   MPLS_LIST_REMOVE(&g->fec, f, _global);
1117   MPLS_REFCNT_RELEASE(f, ldp_fec_delete);
1118 }
1119
1120 void _ldp_global_add_nexthop(ldp_global * g, ldp_nexthop * nh)
1121 {
1122   ldp_nexthop *nhp = NULL;
1123
1124   MPLS_ASSERT(g && nh);
1125   MPLS_REFCNT_HOLD(nh);
1126   nhp = MPLS_LIST_HEAD(&g->nexthop);
1127   while (nhp != NULL) {
1128     if (nhp->index > nh->index) {
1129       MPLS_LIST_INSERT_BEFORE(&g->nexthop, nhp, nh, _global);
1130       return;
1131     }
1132     nhp = MPLS_LIST_NEXT(&g->nexthop, nhp, _global);
1133   }
1134   MPLS_LIST_ADD_TAIL(&g->nexthop, nh, _global, ldp_nexthop);
1135 }
1136
1137 void _ldp_global_del_nexthop(ldp_global * g, ldp_nexthop * nh)
1138 {
1139   MPLS_ASSERT(g && nh);
1140   MPLS_LIST_REMOVE(&g->nexthop, nh, _global);
1141   MPLS_REFCNT_RELEASE(nh, ldp_nexthop_delete);
1142 }