ldpd/l2vpn.c

   1 /*      $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2015 Renato Westphal <renato@openbsd.org>
   5  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
   6  * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
   7  * Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org>
   8  *
   9  * Permission to use, copy, modify, and distribute this software for any
  10  * purpose with or without fee is hereby granted, provided that the above
  11  * copyright notice and this permission notice appear in all copies.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20  */
  21
  22 #include <zebra.h>
  23
  24 #include "ldpd.h"
  25 #include "ldpe.h"
  26 #include "lde.h"
  27 #include "log.h"
  28
  29 static void              l2vpn_pw_fec(struct l2vpn_pw *, struct fec *);
  30 static __inline int      l2vpn_compare(const struct l2vpn *, const struct l2vpn *);
  31 static __inline int      l2vpn_if_compare(const struct l2vpn_if *, const struct l2vpn_if *);
  32 static __inline int      l2vpn_pw_compare(const struct l2vpn_pw *, const struct l2vpn_pw *);
  33
  34 RB_GENERATE(l2vpn_head, l2vpn, entry, l2vpn_compare)
  35 RB_GENERATE(l2vpn_if_head, l2vpn_if, entry, l2vpn_if_compare)
  36 RB_GENERATE(l2vpn_pw_head, l2vpn_pw, entry, l2vpn_pw_compare)
  37
  38 static __inline int
  39 l2vpn_compare(const struct l2vpn *a, const struct l2vpn *b)
  40 {
  41         return (strcmp(a->name, b->name));
  42 }
  43
  44 struct l2vpn *
  45 l2vpn_new(const char *name)
  46 {
  47         struct l2vpn    *l2vpn;
  48
  49         if ((l2vpn = calloc(1, sizeof(*l2vpn))) == NULL)
  50                 fatal("l2vpn_new: calloc");
  51
  52         strlcpy(l2vpn->name, name, sizeof(l2vpn->name));
  53
  54         /* set default values */
  55         l2vpn->mtu = DEFAULT_L2VPN_MTU;
  56         l2vpn->pw_type = DEFAULT_PW_TYPE;
  57
  58         RB_INIT(l2vpn_if_head, &l2vpn->if_tree);
  59         RB_INIT(l2vpn_pw_head, &l2vpn->pw_tree);
  60         RB_INIT(l2vpn_pw_head, &l2vpn->pw_inactive_tree);
  61
  62         return (l2vpn);
  63 }
  64
  65 struct l2vpn *
  66 l2vpn_find(struct ldpd_conf *xconf, const char *name)
  67 {
  68         struct l2vpn     l2vpn;
  69         strlcpy(l2vpn.name, name, sizeof(l2vpn.name));
  70         return (RB_FIND(l2vpn_head, &xconf->l2vpn_tree, &l2vpn));
  71 }
  72
  73 void
  74 l2vpn_del(struct l2vpn *l2vpn)
  75 {
  76         struct l2vpn_if         *lif;
  77         struct l2vpn_pw         *pw;
  78
  79         while ((lif = RB_ROOT(l2vpn_if_head, &l2vpn->if_tree)) != NULL) {
  80                 RB_REMOVE(l2vpn_if_head, &l2vpn->if_tree, lif);
  81                 free(lif);
  82         }
  83         while ((pw = RB_ROOT(l2vpn_pw_head, &l2vpn->pw_tree)) != NULL) {
  84                 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw);
  85                 free(pw);
  86         }
  87         while ((pw = RB_ROOT(l2vpn_pw_head,
  88             &l2vpn->pw_inactive_tree)) != NULL) {
  89                 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
  90                 free(pw);
  91         }
  92
  93         free(l2vpn);
  94 }
  95
  96 void
  97 l2vpn_init(struct l2vpn *l2vpn)
  98 {
  99         struct l2vpn_pw *pw;
 100
 101         RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree)
 102                 l2vpn_pw_init(pw);
 103 }
 104
 105 void
 106 l2vpn_exit(struct l2vpn *l2vpn)
 107 {
 108         struct l2vpn_pw         *pw;
 109
 110         RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree)
 111                 l2vpn_pw_exit(pw);
 112 }
 113
 114 static __inline int
 115 l2vpn_if_compare(const struct l2vpn_if *a, const struct l2vpn_if *b)
 116 {
 117         return (if_cmp_name_func((char *)a->ifname, (char *)b->ifname));
 118 }
 119
 120 struct l2vpn_if *
 121 l2vpn_if_new(struct l2vpn *l2vpn, const char *ifname)
 122 {
 123         struct l2vpn_if *lif;
 124
 125         if ((lif = calloc(1, sizeof(*lif))) == NULL)
 126                 fatal("l2vpn_if_new: calloc");
 127
 128         lif->l2vpn = l2vpn;
 129         strlcpy(lif->ifname, ifname, sizeof(lif->ifname));
 130
 131         return (lif);
 132 }
 133
 134 struct l2vpn_if *
 135 l2vpn_if_find(struct l2vpn *l2vpn, const char *ifname)
 136 {
 137         struct l2vpn_if  lif;
 138         strlcpy(lif.ifname, ifname, sizeof(lif.ifname));
 139         return (RB_FIND(l2vpn_if_head, &l2vpn->if_tree, &lif));
 140 }
 141
 142 void
 143 l2vpn_if_update_info(struct l2vpn_if *lif, struct kif *kif)
 144 {
 145         lif->ifindex = kif->ifindex;
 146         lif->operative = kif->operative;
 147         memcpy(lif->mac, kif->mac, sizeof(lif->mac));
 148 }
 149
 150 void
 151 l2vpn_if_update(struct l2vpn_if *lif)
 152 {
 153         struct l2vpn    *l2vpn = lif->l2vpn;
 154         struct l2vpn_pw *pw;
 155         struct map       fec;
 156         struct nbr      *nbr;
 157
 158         if (lif->operative)
 159                 return;
 160
 161         RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree) {
 162                 nbr = nbr_find_ldpid(pw->lsr_id.s_addr);
 163                 if (nbr == NULL)
 164                         continue;
 165
 166                 memset(&fec, 0, sizeof(fec));
 167                 fec.type = MAP_TYPE_PWID;
 168                 fec.fec.pwid.type = l2vpn->pw_type;
 169                 fec.fec.pwid.group_id = 0;
 170                 fec.flags |= F_MAP_PW_ID;
 171                 fec.fec.pwid.pwid = pw->pwid;
 172
 173                 send_mac_withdrawal(nbr, &fec, lif->mac);
 174         }
 175 }
 176
 177 static __inline int
 178 l2vpn_pw_compare(const struct l2vpn_pw *a, const struct l2vpn_pw *b)
 179 {
 180         return (if_cmp_name_func((char *)a->ifname, (char *)b->ifname));
 181 }
 182
 183 struct l2vpn_pw *
 184 l2vpn_pw_new(struct l2vpn *l2vpn, const char *ifname)
 185 {
 186         struct l2vpn_pw *pw;
 187
 188         if ((pw = calloc(1, sizeof(*pw))) == NULL)
 189                 fatal("l2vpn_pw_new: calloc");
 190
 191         pw->l2vpn = l2vpn;
 192         strlcpy(pw->ifname, ifname, sizeof(pw->ifname));
 193
 194         return (pw);
 195 }
 196
 197 struct l2vpn_pw *
 198 l2vpn_pw_find(struct l2vpn *l2vpn, const char *ifname)
 199 {
 200         struct l2vpn_pw *pw;
 201         struct l2vpn_pw  s;
 202
 203         strlcpy(s.ifname, ifname, sizeof(s.ifname));
 204         pw = RB_FIND(l2vpn_pw_head, &l2vpn->pw_tree, &s);
 205         if (pw)
 206                 return (pw);
 207         return (RB_FIND(l2vpn_pw_head, &l2vpn->pw_inactive_tree, &s));
 208 }
 209
 210 struct l2vpn_pw *
 211 l2vpn_pw_find_active(struct l2vpn *l2vpn, const char *ifname)
 212 {
 213         struct l2vpn_pw  s;
 214
 215         strlcpy(s.ifname, ifname, sizeof(s.ifname));
 216         return (RB_FIND(l2vpn_pw_head, &l2vpn->pw_tree, &s));
 217 }
 218
 219 struct l2vpn_pw *
 220 l2vpn_pw_find_inactive(struct l2vpn *l2vpn, const char *ifname)
 221 {
 222         struct l2vpn_pw  s;
 223
 224         strlcpy(s.ifname, ifname, sizeof(s.ifname));
 225         return (RB_FIND(l2vpn_pw_head, &l2vpn->pw_inactive_tree, &s));
 226 }
 227
 228 void
 229 l2vpn_pw_update_info(struct l2vpn_pw *pw, struct kif *kif)
 230 {
 231         pw->ifindex = kif->ifindex;
 232 }
 233
 234 void
 235 l2vpn_pw_init(struct l2vpn_pw *pw)
 236 {
 237         struct fec       fec;
 238         struct zapi_pw   zpw;
 239
 240         l2vpn_pw_reset(pw);
 241
 242         pw2zpw(pw, &zpw);
 243         lde_imsg_compose_parent(IMSG_KPW_ADD, 0, &zpw, sizeof(zpw));
 244
 245         l2vpn_pw_fec(pw, &fec);
 246         lde_kernel_insert(&fec, AF_INET, (union ldpd_addr*)&pw->lsr_id, 0, 0,
 247             0, (void *)pw);
 248         lde_kernel_update(&fec);
 249 }
 250
 251 void
 252 l2vpn_pw_exit(struct l2vpn_pw *pw)
 253 {
 254         struct fec       fec;
 255         struct zapi_pw   zpw;
 256
 257         l2vpn_pw_fec(pw, &fec);
 258         lde_kernel_remove(&fec, AF_INET, (union ldpd_addr*)&pw->lsr_id, 0, 0);
 259         lde_kernel_update(&fec);
 260
 261         pw2zpw(pw, &zpw);
 262         lde_imsg_compose_parent(IMSG_KPW_DELETE, 0, &zpw, sizeof(zpw));
 263 }
 264
 265 static void
 266 l2vpn_pw_fec(struct l2vpn_pw *pw, struct fec *fec)
 267 {
 268         memset(fec, 0, sizeof(*fec));
 269         fec->type = FEC_TYPE_PWID;
 270         fec->u.pwid.type = pw->l2vpn->pw_type;
 271         fec->u.pwid.pwid = pw->pwid;
 272         fec->u.pwid.lsr_id = pw->lsr_id;
 273 }
 274
 275 void
 276 l2vpn_pw_reset(struct l2vpn_pw *pw)
 277 {
 278         pw->remote_group = 0;
 279         pw->remote_mtu = 0;
 280         pw->local_status = PW_FORWARDING;
 281         pw->remote_status = PW_NOT_FORWARDING;
 282
 283         if (pw->flags & F_PW_CWORD_CONF)
 284                 pw->flags |= F_PW_CWORD;
 285         else
 286                 pw->flags &= ~F_PW_CWORD;
 287
 288         if (pw->flags & F_PW_STATUSTLV_CONF)
 289                 pw->flags |= F_PW_STATUSTLV;
 290         else
 291                 pw->flags &= ~F_PW_STATUSTLV;
 292 }
 293
 294 int
 295 l2vpn_pw_ok(struct l2vpn_pw *pw, struct fec_nh *fnh)
 296 {
 297         /* check for a remote label */
 298         if (fnh->remote_label == NO_LABEL)
 299                 return (0);
 300
 301         /* MTUs must match */
 302         if (pw->l2vpn->mtu != pw->remote_mtu)
 303                 return (0);
 304
 305         /* check pw status if applicable */
 306         if ((pw->flags & F_PW_STATUSTLV) &&
 307             pw->remote_status != PW_FORWARDING)
 308                 return (0);
 309
 310         return (1);
 311 }
 312
 313 int
 314 l2vpn_pw_negotiate(struct lde_nbr *ln, struct fec_node *fn, struct map *map)
 315 {
 316         struct l2vpn_pw         *pw;
 317         struct status_tlv        st;
 318
 319         /* NOTE: thanks martini & friends for all this mess */
 320
 321         pw = (struct l2vpn_pw *) fn->data;
 322         if (pw == NULL)
 323                 /*
 324                  * pseudowire not configured, return and record
 325                  * the mapping later
 326                  */
 327                 return (0);
 328
 329         /* RFC4447 - Section 6.2: control word negotiation */
 330         if (fec_find(&ln->sent_map, &fn->fec)) {
 331                 if ((map->flags & F_MAP_PW_CWORD) &&
 332                     !(pw->flags & F_PW_CWORD_CONF)) {
 333                         /* ignore the received label mapping */
 334                         return (1);
 335                 } else if (!(map->flags & F_MAP_PW_CWORD) &&
 336                     (pw->flags & F_PW_CWORD_CONF)) {
 337                         /* append a "Wrong C-bit" status code */
 338                         st.status_code = S_WRONG_CBIT;
 339                         st.msg_id = map->msg_id;
 340                         st.msg_type = htons(MSG_TYPE_LABELMAPPING);
 341                         lde_send_labelwithdraw(ln, fn, NULL, &st);
 342
 343                         pw->flags &= ~F_PW_CWORD;
 344                         lde_send_labelmapping(ln, fn, 1);
 345                 }
 346         } else if (map->flags & F_MAP_PW_CWORD) {
 347                 if (pw->flags & F_PW_CWORD_CONF)
 348                         pw->flags |= F_PW_CWORD;
 349                 else
 350                         /* act as if no label mapping had been received */
 351                         return (1);
 352         } else
 353                 pw->flags &= ~F_PW_CWORD;
 354
 355         /* RFC4447 - Section 5.4.3: pseudowire status negotiation */
 356         if (fec_find(&ln->recv_map, &fn->fec) == NULL &&
 357             !(map->flags & F_MAP_PW_STATUS))
 358                 pw->flags &= ~F_PW_STATUSTLV;
 359
 360         return (0);
 361 }
 362
 363 void
 364 l2vpn_send_pw_status(struct lde_nbr *ln, uint32_t status, struct fec *fec)
 365 {
 366         struct notify_msg        nm;
 367
 368         memset(&nm, 0, sizeof(nm));
 369         nm.status_code = S_PW_STATUS;
 370         nm.pw_status = status;
 371         nm.flags |= F_NOTIF_PW_STATUS;
 372         lde_fec2map(fec, &nm.fec);
 373         nm.flags |= F_NOTIF_FEC;
 374
 375         lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, &nm,
 376             sizeof(nm));
 377 }
 378
 379 void
 380 l2vpn_send_pw_status_wcard(struct lde_nbr *ln, uint32_t status,
 381     uint16_t pw_type, uint32_t group_id)
 382 {
 383         struct notify_msg        nm;
 384
 385         memset(&nm, 0, sizeof(nm));
 386         nm.status_code = S_PW_STATUS;
 387         nm.pw_status = status;
 388         nm.flags |= F_NOTIF_PW_STATUS;
 389         nm.fec.type = MAP_TYPE_PWID;
 390         nm.fec.fec.pwid.type = pw_type;
 391         nm.fec.fec.pwid.group_id = group_id;
 392         nm.flags |= F_NOTIF_FEC;
 393
 394         lde_imsg_compose_ldpe(IMSG_NOTIFICATION_SEND, ln->peerid, 0, &nm,
 395             sizeof(nm));
 396 }
 397
 398 void
 399 l2vpn_recv_pw_status(struct lde_nbr *ln, struct notify_msg *nm)
 400 {
 401         struct fec               fec;
 402         struct fec_node         *fn;
 403         struct fec_nh           *fnh;
 404         struct l2vpn_pw         *pw;
 405
 406         if (nm->fec.type == MAP_TYPE_TYPED_WCARD ||
 407             !(nm->fec.flags & F_MAP_PW_ID)) {
 408                 l2vpn_recv_pw_status_wcard(ln, nm);
 409                 return;
 410         }
 411
 412         lde_map2fec(&nm->fec, ln->id, &fec);
 413         fn = (struct fec_node *)fec_find(&ft, &fec);
 414         if (fn == NULL)
 415                 /* unknown fec */
 416                 return;
 417
 418         pw = (struct l2vpn_pw *) fn->data;
 419         if (pw == NULL)
 420                 return;
 421
 422         fnh = fec_nh_find(fn, AF_INET, (union ldpd_addr *)&ln->id, 0, 0);
 423         if (fnh == NULL)
 424                 return;
 425
 426         /* remote status didn't change */
 427         if (pw->remote_status == nm->pw_status)
 428                 return;
 429         pw->remote_status = nm->pw_status;
 430
 431         if (l2vpn_pw_ok(pw, fnh))
 432                 lde_send_change_klabel(fn, fnh);
 433         else
 434                 lde_send_delete_klabel(fn, fnh);
 435 }
 436
 437 /* RFC4447 PWid group wildcard */
 438 void
 439 l2vpn_recv_pw_status_wcard(struct lde_nbr *ln, struct notify_msg *nm)
 440 {
 441         struct fec              *f;
 442         struct fec_node         *fn;
 443         struct fec_nh           *fnh;
 444         struct l2vpn_pw         *pw;
 445         struct map              *wcard = &nm->fec;
 446
 447         RB_FOREACH(f, fec_tree, &ft) {
 448                 fn = (struct fec_node *)f;
 449                 if (fn->fec.type != FEC_TYPE_PWID)
 450                         continue;
 451
 452                 pw = (struct l2vpn_pw *) fn->data;
 453                 if (pw == NULL)
 454                         continue;
 455
 456                 switch (wcard->type) {
 457                 case MAP_TYPE_TYPED_WCARD:
 458                         if (wcard->fec.twcard.u.pw_type != PW_TYPE_WILDCARD &&
 459                             wcard->fec.twcard.u.pw_type != fn->fec.u.pwid.type)
 460                                 continue;
 461                         break;
 462                 case MAP_TYPE_PWID:
 463                         if (wcard->fec.pwid.type != fn->fec.u.pwid.type)
 464                                 continue;
 465                         if (wcard->fec.pwid.group_id != pw->remote_group)
 466                                 continue;
 467                         break;
 468                 }
 469
 470                 fnh = fec_nh_find(fn, AF_INET, (union ldpd_addr *)&ln->id,
 471                     0, 0);
 472                 if (fnh == NULL)
 473                         continue;
 474
 475                 /* remote status didn't change */
 476                 if (pw->remote_status == nm->pw_status)
 477                         continue;
 478                 pw->remote_status = nm->pw_status;
 479
 480                 if (l2vpn_pw_ok(pw, fnh))
 481                         lde_send_change_klabel(fn, fnh);
 482                 else
 483                         lde_send_delete_klabel(fn, fnh);
 484         }
 485 }
 486
 487 int
 488 l2vpn_pw_status_update(struct zapi_pw_status *zpw)
 489 {
 490         struct l2vpn            *l2vpn;
 491         struct l2vpn_pw         *pw = NULL;
 492         struct lde_nbr          *ln;
 493         struct fec               fec;
 494         uint32_t                 local_status;
 495
 496         RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree) {
 497                 pw = l2vpn_pw_find(l2vpn, zpw->ifname);
 498                 if (pw)
 499                         break;
 500         }
 501         if (!pw) {
 502                 log_warnx("%s: pseudowire %s not found", __func__, zpw->ifname);
 503                 return (1);
 504         }
 505
 506         if (zpw->status == PW_STATUS_UP)
 507                 local_status = PW_FORWARDING;
 508         else
 509                 local_status = PW_NOT_FORWARDING;
 510
 511         /* local status didn't change */
 512         if (pw->local_status == local_status)
 513                 return (0);
 514         pw->local_status = local_status;
 515
 516         /* notify remote peer about the status update */
 517         ln = lde_nbr_find_by_lsrid(pw->lsr_id);
 518         if (ln == NULL)
 519                 return (0);
 520         l2vpn_pw_fec(pw, &fec);
 521         if (pw->flags & F_PW_STATUSTLV)
 522                 l2vpn_send_pw_status(ln, local_status, &fec);
 523         else {
 524                 struct fec_node *fn;
 525                 fn = (struct fec_node *)fec_find(&ft, &fec);
 526                 if (fn) {
 527                         if (pw->local_status == PW_FORWARDING)
 528                                 lde_send_labelmapping(ln, fn, 1);
 529                         else
 530                                 lde_send_labelwithdraw(ln, fn, NULL, NULL);
 531                 }
 532         }
 533
 534         return (0);
 535 }
 536
 537 void
 538 l2vpn_pw_ctl(pid_t pid)
 539 {
 540         struct l2vpn            *l2vpn;
 541         struct l2vpn_pw         *pw;
 542         static struct ctl_pw     pwctl;
 543
 544         RB_FOREACH(l2vpn, l2vpn_head, &ldeconf->l2vpn_tree)
 545                 RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree) {
 546                         memset(&pwctl, 0, sizeof(pwctl));
 547                         strlcpy(pwctl.l2vpn_name, pw->l2vpn->name,
 548                             sizeof(pwctl.l2vpn_name));
 549                         strlcpy(pwctl.ifname, pw->ifname,
 550                             sizeof(pwctl.ifname));
 551                         pwctl.pwid = pw->pwid;
 552                         pwctl.lsr_id = pw->lsr_id;
 553                         if (pw->enabled &&
 554                             pw->local_status == PW_FORWARDING &&
 555                             pw->remote_status == PW_FORWARDING)
 556                                 pwctl.status = 1;
 557
 558                         lde_imsg_compose_ldpe(IMSG_CTL_SHOW_L2VPN_PW, 0,
 559                             pid, &pwctl, sizeof(pwctl));
 560                 }
 561 }
 562
 563 void
 564 l2vpn_binding_ctl(pid_t pid)
 565 {
 566         struct fec              *f;
 567         struct fec_node         *fn;
 568         struct lde_map          *me;
 569         struct l2vpn_pw         *pw;
 570         static struct ctl_pw     pwctl;
 571
 572         RB_FOREACH(f, fec_tree, &ft) {
 573                 if (f->type != FEC_TYPE_PWID)
 574                         continue;
 575
 576                 fn = (struct fec_node *)f;
 577                 if (fn->local_label == NO_LABEL &&
 578                     RB_EMPTY(lde_map_head, &fn->downstream))
 579                         continue;
 580
 581                 memset(&pwctl, 0, sizeof(pwctl));
 582                 pwctl.type = f->u.pwid.type;
 583                 pwctl.pwid = f->u.pwid.pwid;
 584                 pwctl.lsr_id = f->u.pwid.lsr_id;
 585
 586                 pw = (struct l2vpn_pw *) fn->data;
 587                 if (pw) {
 588                         pwctl.local_label = fn->local_label;
 589                         pwctl.local_gid = 0;
 590                         pwctl.local_ifmtu = pw->l2vpn->mtu;
 591                         pwctl.local_cword = (pw->flags & F_PW_CWORD_CONF) ?
 592                             1 : 0;
 593                 } else
 594                         pwctl.local_label = NO_LABEL;
 595
 596                 RB_FOREACH(me, lde_map_head, &fn->downstream)
 597                         if (f->u.pwid.lsr_id.s_addr == me->nexthop->id.s_addr)
 598                                 break;
 599
 600                 if (me) {
 601                         pwctl.remote_label = me->map.label;
 602                         pwctl.remote_gid = me->map.fec.pwid.group_id;
 603                         if (me->map.flags & F_MAP_PW_IFMTU)
 604                                 pwctl.remote_ifmtu = me->map.fec.pwid.ifmtu;
 605                         if (pw)
 606                                 pwctl.remote_cword = (pw->flags & F_PW_CWORD) ?
 607                                     1 : 0;
 608
 609                         lde_imsg_compose_ldpe(IMSG_CTL_SHOW_L2VPN_BINDING,
 610                             0, pid, &pwctl, sizeof(pwctl));
 611                 } else if (pw) {
 612                         pwctl.remote_label = NO_LABEL;
 613
 614                         lde_imsg_compose_ldpe(IMSG_CTL_SHOW_L2VPN_BINDING,
 615                             0, pid, &pwctl, sizeof(pwctl));
 616                 }
 617         }
 618 }
 619
 620 /* ldpe */
 621
 622 void
 623 ldpe_l2vpn_init(struct l2vpn *l2vpn)
 624 {
 625         struct l2vpn_pw         *pw;
 626
 627         RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree)
 628                 ldpe_l2vpn_pw_init(pw);
 629 }
 630
 631 void
 632 ldpe_l2vpn_exit(struct l2vpn *l2vpn)
 633 {
 634         struct l2vpn_pw         *pw;
 635
 636         RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree)
 637                 ldpe_l2vpn_pw_exit(pw);
 638 }
 639
 640 void
 641 ldpe_l2vpn_pw_init(struct l2vpn_pw *pw)
 642 {
 643         struct tnbr             *tnbr;
 644
 645         tnbr = tnbr_find(leconf, pw->af, &pw->addr);
 646         if (tnbr == NULL) {
 647                 tnbr = tnbr_new(pw->af, &pw->addr);
 648                 tnbr_update(tnbr);
 649                 RB_INSERT(tnbr_head, &leconf->tnbr_tree, tnbr);
 650         }
 651
 652         tnbr->pw_count++;
 653 }
 654
 655 void
 656 ldpe_l2vpn_pw_exit(struct l2vpn_pw *pw)
 657 {
 658         struct tnbr             *tnbr;
 659
 660         tnbr = tnbr_find(leconf, pw->af, &pw->addr);
 661         if (tnbr) {
 662                 tnbr->pw_count--;
 663                 tnbr_check(leconf, tnbr);
 664         }
 665 }