src/libhydra/kernel/kernel_interface.c

   1 /*
   2  * Copyright (C) 2008-2012 Tobias Brunner
   3  * Hochschule fuer Technik Rapperswil
   4  * Copyright (C) 2010 Martin Willi
   5  * Copyright (C) 2010 revosec AG
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * for more details.
  16  */
  17
  18 /*
  19  * Copyright (c) 2012 Nanoteq Pty Ltd
  20  *
  21  * Permission is hereby granted, free of charge, to any person obtaining a copy
  22  * of this software and associated documentation files (the "Software"), to deal
  23  * in the Software without restriction, including without limitation the rights
  24  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  25  * copies of the Software, and to permit persons to whom the Software is
  26  * furnished to do so, subject to the following conditions:
  27  *
  28  * The above copyright notice and this permission notice shall be included in
  29  * all copies or substantial portions of the Software.
  30  *
  31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  32  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  33  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  34  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  35  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  36  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  37  * THE SOFTWARE.
  38  */
  39
  40 #include "kernel_interface.h"
  41
  42 #include <debug.h>
  43 #include <threading/mutex.h>
  44 #include <utils/linked_list.h>
  45
  46 typedef struct private_kernel_interface_t private_kernel_interface_t;
  47
  48 typedef struct kernel_algorithm_t kernel_algorithm_t;
  49
  50 /**
  51  * Mapping of IKE algorithms to kernel-specific algorithm identifiers
  52  */
  53 struct kernel_algorithm_t {
  54
  55         /**
  56          * Transform type of the algorithm
  57          */
  58         transform_type_t type;
  59
  60         /**
  61          * Identifier specified in IKE
  62          */
  63         u_int16_t ike;
  64
  65         /**
  66          * Identifier as defined in pfkeyv2.h
  67          */
  68         u_int16_t kernel;
  69
  70         /**
  71          * Name of the algorithm in linux crypto API
  72          */
  73         char *name;
  74 };
  75
  76 /**
  77  * Private data of a kernel_interface_t object.
  78  */
  79 struct private_kernel_interface_t {
  80
  81         /**
  82          * Public part of kernel_interface_t object.
  83          */
  84         kernel_interface_t public;
  85
  86         /**
  87          * Registered IPsec constructor
  88          */
  89         kernel_ipsec_constructor_t ipsec_constructor;
  90
  91         /**
  92          * Registered net constructor
  93          */
  94         kernel_net_constructor_t net_constructor;
  95
  96         /**
  97          * ipsec interface
  98          */
  99         kernel_ipsec_t *ipsec;
 100
 101         /**
 102          * network interface
 103          */
 104         kernel_net_t *net;
 105
 106         /**
 107          * mutex for listeners
 108          */
 109         mutex_t *mutex;
 110
 111         /**
 112          * list of registered listeners
 113          */
 114         linked_list_t *listeners;
 115
 116         /**
 117          * mutex for algorithm mappings
 118          */
 119         mutex_t *mutex_algs;
 120
 121         /**
 122          * List of algorithm mappings (kernel_algorithm_t*)
 123          */
 124         linked_list_t *algorithms;
 125 };
 126
 127 METHOD(kernel_interface_t, get_spi, status_t,
 128         private_kernel_interface_t *this, host_t *src, host_t *dst,
 129         u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
 130 {
 131         if (!this->ipsec)
 132         {
 133                 return NOT_SUPPORTED;
 134         }
 135         return this->ipsec->get_spi(this->ipsec, src, dst, protocol, reqid, spi);
 136 }
 137
 138 METHOD(kernel_interface_t, get_cpi, status_t,
 139         private_kernel_interface_t *this, host_t *src, host_t *dst,
 140         u_int32_t reqid, u_int16_t *cpi)
 141 {
 142         if (!this->ipsec)
 143         {
 144                 return NOT_SUPPORTED;
 145         }
 146         return this->ipsec->get_cpi(this->ipsec, src, dst, reqid, cpi);
 147 }
 148
 149 METHOD(kernel_interface_t, add_sa, status_t,
 150         private_kernel_interface_t *this, host_t *src, host_t *dst,
 151         u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
 152         u_int32_t tfc, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
 153         u_int16_t int_alg, chunk_t int_key,     ipsec_mode_t mode, u_int16_t ipcomp,
 154         u_int16_t cpi, bool encap, bool esn, bool inbound,
 155         traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
 156 {
 157         if (!this->ipsec)
 158         {
 159                 return NOT_SUPPORTED;
 160         }
 161         return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid,
 162                         mark, tfc, lifetime, enc_alg, enc_key, int_alg, int_key, mode,
 163                         ipcomp, cpi, encap, esn, inbound, src_ts, dst_ts);
 164 }
 165
 166 METHOD(kernel_interface_t, update_sa, status_t,
 167         private_kernel_interface_t *this, u_int32_t spi, u_int8_t protocol,
 168         u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst,
 169         bool encap, bool new_encap, mark_t mark)
 170 {
 171         if (!this->ipsec)
 172         {
 173                 return NOT_SUPPORTED;
 174         }
 175         return this->ipsec->update_sa(this->ipsec, spi, protocol, cpi, src, dst,
 176                                                                   new_src, new_dst, encap, new_encap, mark);
 177 }
 178
 179 METHOD(kernel_interface_t, query_sa, status_t,
 180         private_kernel_interface_t *this, host_t *src, host_t *dst,
 181         u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes)
 182 {
 183         if (!this->ipsec)
 184         {
 185                 return NOT_SUPPORTED;
 186         }
 187         return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, mark, bytes);
 188 }
 189
 190 METHOD(kernel_interface_t, del_sa, status_t,
 191         private_kernel_interface_t *this, host_t *src, host_t *dst, u_int32_t spi,
 192         u_int8_t protocol, u_int16_t cpi, mark_t mark)
 193 {
 194         if (!this->ipsec)
 195         {
 196                 return NOT_SUPPORTED;
 197         }
 198         return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi, mark);
 199 }
 200
 201 METHOD(kernel_interface_t, flush_sas, status_t,
 202         private_kernel_interface_t *this)
 203 {
 204         if (!this->ipsec)
 205         {
 206                 return NOT_SUPPORTED;
 207         }
 208         return this->ipsec->flush_sas(this->ipsec);
 209 }
 210
 211 METHOD(kernel_interface_t, add_policy, status_t,
 212         private_kernel_interface_t *this, host_t *src, host_t *dst,
 213         traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
 214         policy_dir_t direction, policy_type_t type, ipsec_sa_cfg_t *sa,
 215         mark_t mark, policy_priority_t priority)
 216 {
 217         if (!this->ipsec)
 218         {
 219                 return NOT_SUPPORTED;
 220         }
 221         return this->ipsec->add_policy(this->ipsec, src, dst, src_ts, dst_ts,
 222                                                                    direction, type, sa, mark, priority);
 223 }
 224
 225 METHOD(kernel_interface_t, query_policy, status_t,
 226         private_kernel_interface_t *this, traffic_selector_t *src_ts,
 227         traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
 228         u_int32_t *use_time)
 229 {
 230         if (!this->ipsec)
 231         {
 232                 return NOT_SUPPORTED;
 233         }
 234         return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts,
 235                                                                          direction, mark, use_time);
 236 }
 237
 238 METHOD(kernel_interface_t, del_policy, status_t,
 239         private_kernel_interface_t *this, traffic_selector_t *src_ts,
 240         traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t reqid,
 241         mark_t mark, policy_priority_t priority)
 242 {
 243         if (!this->ipsec)
 244         {
 245                 return NOT_SUPPORTED;
 246         }
 247         return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts,
 248                                                                    direction, reqid, mark, priority);
 249 }
 250
 251 METHOD(kernel_interface_t, flush_policies, status_t,
 252         private_kernel_interface_t *this)
 253 {
 254         if (!this->ipsec)
 255         {
 256                 return NOT_SUPPORTED;
 257         }
 258         return this->ipsec->flush_policies(this->ipsec);
 259 }
 260
 261 METHOD(kernel_interface_t, get_source_addr, host_t*,
 262         private_kernel_interface_t *this, host_t *dest, host_t *src)
 263 {
 264         if (!this->net)
 265         {
 266                 return NULL;
 267         }
 268         return this->net->get_source_addr(this->net, dest, src);
 269 }
 270
 271 METHOD(kernel_interface_t, get_nexthop, host_t*,
 272         private_kernel_interface_t *this, host_t *dest, host_t *src)
 273 {
 274         if (!this->net)
 275         {
 276                 return NULL;
 277         }
 278         return this->net->get_nexthop(this->net, dest, src);
 279 }
 280
 281 METHOD(kernel_interface_t, get_interface, char*,
 282         private_kernel_interface_t *this, host_t *host)
 283 {
 284         if (!this->net)
 285         {
 286                 return NULL;
 287         }
 288         return this->net->get_interface(this->net, host);
 289 }
 290
 291 METHOD(kernel_interface_t, create_address_enumerator, enumerator_t*,
 292         private_kernel_interface_t *this, bool include_down_ifaces,
 293         bool include_virtual_ips)
 294 {
 295         if (!this->net)
 296         {
 297                 return enumerator_create_empty();
 298         }
 299         return this->net->create_address_enumerator(this->net, include_down_ifaces,
 300                                                                                                 include_virtual_ips);
 301 }
 302
 303 METHOD(kernel_interface_t, add_ip, status_t,
 304         private_kernel_interface_t *this, host_t *virtual_ip, host_t *iface_ip)
 305 {
 306         if (!this->net)
 307         {
 308                 return NOT_SUPPORTED;
 309         }
 310         return this->net->add_ip(this->net, virtual_ip, iface_ip);
 311 }
 312
 313 METHOD(kernel_interface_t, del_ip, status_t,
 314         private_kernel_interface_t *this, host_t *virtual_ip)
 315 {
 316         if (!this->net)
 317         {
 318                 return NOT_SUPPORTED;
 319         }
 320         return this->net->del_ip(this->net, virtual_ip);
 321 }
 322
 323 METHOD(kernel_interface_t, add_route, status_t,
 324         private_kernel_interface_t *this, chunk_t dst_net,
 325         u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
 326 {
 327         if (!this->net)
 328         {
 329                 return NOT_SUPPORTED;
 330         }
 331         return this->net->add_route(this->net, dst_net, prefixlen, gateway,
 332                                                                 src_ip, if_name);
 333 }
 334
 335 METHOD(kernel_interface_t, del_route, status_t,
 336         private_kernel_interface_t *this, chunk_t dst_net,
 337         u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name)
 338 {
 339         if (!this->net)
 340         {
 341                 return NOT_SUPPORTED;
 342         }
 343         return this->net->del_route(this->net, dst_net, prefixlen, gateway,
 344                                                                 src_ip, if_name);
 345 }
 346
 347 METHOD(kernel_interface_t, bypass_socket, bool,
 348         private_kernel_interface_t *this, int fd, int family)
 349 {
 350         if (!this->ipsec)
 351         {
 352                 return FALSE;
 353         }
 354         return this->ipsec->bypass_socket(this->ipsec, fd, family);
 355 }
 356
 357 METHOD(kernel_interface_t, enable_udp_decap, bool,
 358         private_kernel_interface_t *this, int fd, int family, u_int16_t port)
 359 {
 360         if (!this->ipsec)
 361         {
 362                 return FALSE;
 363         }
 364         return this->ipsec->enable_udp_decap(this->ipsec, fd, family, port);
 365 }
 366
 367 METHOD(kernel_interface_t, get_address_by_ts, status_t,
 368         private_kernel_interface_t *this, traffic_selector_t *ts, host_t **ip)
 369 {
 370         enumerator_t *addrs;
 371         host_t *host;
 372         int family;
 373         bool found = FALSE;
 374
 375         DBG2(DBG_KNL, "getting a local address in traffic selector %R", ts);
 376
 377         /* if we have a family which includes localhost, we do not
 378          * search for an IP, we use the default */
 379         family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6;
 380
 381         if (family == AF_INET)
 382         {
 383                 host = host_create_from_string("127.0.0.1", 0);
 384         }
 385         else
 386         {
 387                 host = host_create_from_string("::1", 0);
 388         }
 389
 390         if (ts->includes(ts, host))
 391         {
 392                 *ip = host_create_any(family);
 393                 host->destroy(host);
 394                 DBG2(DBG_KNL, "using host %H", *ip);
 395                 return SUCCESS;
 396         }
 397         host->destroy(host);
 398
 399         addrs = create_address_enumerator(this, TRUE, TRUE);
 400         while (addrs->enumerate(addrs, (void**)&host))
 401         {
 402                 if (ts->includes(ts, host))
 403                 {
 404                         found = TRUE;
 405                         *ip = host->clone(host);
 406                         break;
 407                 }
 408         }
 409         addrs->destroy(addrs);
 410
 411         if (!found)
 412         {
 413                 DBG2(DBG_KNL, "no local address found in traffic selector %R", ts);
 414                 return FAILED;
 415         }
 416
 417         DBG2(DBG_KNL, "using host %H", *ip);
 418         return SUCCESS;
 419 }
 420
 421
 422 METHOD(kernel_interface_t, add_ipsec_interface, void,
 423         private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
 424 {
 425         if (!this->ipsec)
 426         {
 427                 this->ipsec_constructor = constructor;
 428                 this->ipsec = constructor();
 429         }
 430 }
 431
 432 METHOD(kernel_interface_t, remove_ipsec_interface, void,
 433         private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor)
 434 {
 435         if (constructor == this->ipsec_constructor && this->ipsec)
 436         {
 437                 this->ipsec->destroy(this->ipsec);
 438                 this->ipsec = NULL;
 439         }
 440 }
 441
 442 METHOD(kernel_interface_t, add_net_interface, void,
 443         private_kernel_interface_t *this, kernel_net_constructor_t constructor)
 444 {
 445         if (!this->net)
 446         {
 447                 this->net_constructor = constructor;
 448                 this->net = constructor();
 449         }
 450 }
 451
 452 METHOD(kernel_interface_t, remove_net_interface, void,
 453         private_kernel_interface_t *this, kernel_net_constructor_t constructor)
 454 {
 455         if (constructor == this->net_constructor && this->net)
 456         {
 457                 this->net->destroy(this->net);
 458                 this->net = NULL;
 459         }
 460 }
 461
 462 METHOD(kernel_interface_t, add_listener, void,
 463         private_kernel_interface_t *this, kernel_listener_t *listener)
 464 {
 465         this->mutex->lock(this->mutex);
 466         this->listeners->insert_last(this->listeners, listener);
 467         this->mutex->unlock(this->mutex);
 468 }
 469
 470 METHOD(kernel_interface_t, remove_listener, void,
 471         private_kernel_interface_t *this, kernel_listener_t *listener)
 472 {
 473         this->mutex->lock(this->mutex);
 474         this->listeners->remove(this->listeners, listener, NULL);
 475         this->mutex->unlock(this->mutex);
 476 }
 477
 478 METHOD(kernel_interface_t, acquire, void,
 479         private_kernel_interface_t *this, u_int32_t reqid,
 480         traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
 481 {
 482         kernel_listener_t *listener;
 483         enumerator_t *enumerator;
 484         this->mutex->lock(this->mutex);
 485         enumerator = this->listeners->create_enumerator(this->listeners);
 486         while (enumerator->enumerate(enumerator, &listener))
 487         {
 488                 if (listener->acquire &&
 489                         !listener->acquire(listener, reqid, src_ts, dst_ts))
 490                 {
 491                         this->listeners->remove_at(this->listeners, enumerator);
 492                 }
 493         }
 494         enumerator->destroy(enumerator);
 495         this->mutex->unlock(this->mutex);
 496 }
 497
 498 METHOD(kernel_interface_t, expire, void,
 499         private_kernel_interface_t *this, u_int32_t reqid, u_int8_t protocol,
 500         u_int32_t spi, bool hard)
 501 {
 502         kernel_listener_t *listener;
 503         enumerator_t *enumerator;
 504         this->mutex->lock(this->mutex);
 505         enumerator = this->listeners->create_enumerator(this->listeners);
 506         while (enumerator->enumerate(enumerator, &listener))
 507         {
 508                 if (listener->expire &&
 509                         !listener->expire(listener, reqid, protocol, spi, hard))
 510                 {
 511                         this->listeners->remove_at(this->listeners, enumerator);
 512                 }
 513         }
 514         enumerator->destroy(enumerator);
 515         this->mutex->unlock(this->mutex);
 516 }
 517
 518 METHOD(kernel_interface_t, mapping, void,
 519         private_kernel_interface_t *this, u_int32_t reqid, u_int32_t spi,
 520         host_t *remote)
 521 {
 522         kernel_listener_t *listener;
 523         enumerator_t *enumerator;
 524         this->mutex->lock(this->mutex);
 525         enumerator = this->listeners->create_enumerator(this->listeners);
 526         while (enumerator->enumerate(enumerator, &listener))
 527         {
 528                 if (listener->mapping &&
 529                         !listener->mapping(listener, reqid, spi, remote))
 530                 {
 531                         this->listeners->remove_at(this->listeners, enumerator);
 532                 }
 533         }
 534         enumerator->destroy(enumerator);
 535         this->mutex->unlock(this->mutex);
 536 }
 537
 538 METHOD(kernel_interface_t, migrate, void,
 539         private_kernel_interface_t *this, u_int32_t reqid,
 540         traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
 541         policy_dir_t direction, host_t *local, host_t *remote)
 542 {
 543         kernel_listener_t *listener;
 544         enumerator_t *enumerator;
 545         this->mutex->lock(this->mutex);
 546         enumerator = this->listeners->create_enumerator(this->listeners);
 547         while (enumerator->enumerate(enumerator, &listener))
 548         {
 549                 if (listener->migrate &&
 550                         !listener->migrate(listener, reqid, src_ts, dst_ts, direction,
 551                                                            local, remote))
 552                 {
 553                         this->listeners->remove_at(this->listeners, enumerator);
 554                 }
 555         }
 556         enumerator->destroy(enumerator);
 557         this->mutex->unlock(this->mutex);
 558 }
 559
 560 static bool call_roam(kernel_listener_t *listener, bool *roam)
 561 {
 562         return listener->roam && !listener->roam(listener, *roam);
 563 }
 564
 565 METHOD(kernel_interface_t, roam, void,
 566         private_kernel_interface_t *this, bool address)
 567 {
 568         this->mutex->lock(this->mutex);
 569         this->listeners->remove(this->listeners, &address, (void*)call_roam);
 570         this->mutex->unlock(this->mutex);
 571 }
 572
 573 METHOD(kernel_interface_t, register_algorithm, void,
 574         private_kernel_interface_t *this, u_int16_t alg_id, transform_type_t type,
 575         u_int16_t kernel_id, char *kernel_name)
 576 {
 577         kernel_algorithm_t *algorithm;
 578
 579         INIT(algorithm,
 580                 .type = type,
 581                 .ike = alg_id,
 582                 .kernel = kernel_id,
 583                 .name = strdup(kernel_name),
 584         );
 585
 586         this->mutex_algs->lock(this->mutex_algs);
 587         this->algorithms->insert_first(this->algorithms, algorithm);
 588         this->mutex_algs->unlock(this->mutex_algs);
 589 }
 590
 591 METHOD(kernel_interface_t, lookup_algorithm, bool,
 592         private_kernel_interface_t *this, u_int16_t alg_id, transform_type_t type,
 593         u_int16_t *kernel_id, char **kernel_name)
 594 {
 595         kernel_algorithm_t *algorithm;
 596         enumerator_t *enumerator;
 597         bool found = FALSE;
 598
 599         this->mutex_algs->lock(this->mutex_algs);
 600         enumerator = this->algorithms->create_enumerator(this->algorithms);
 601         while (enumerator->enumerate(enumerator, &algorithm))
 602         {
 603                 if (algorithm->type == type && algorithm->ike == alg_id)
 604                 {
 605                         if (kernel_id)
 606                         {
 607                                 *kernel_id = algorithm->kernel;
 608                         }
 609                         if (kernel_name)
 610                         {
 611                                 *kernel_name = algorithm->name;
 612                         }
 613                         found = TRUE;
 614                         break;
 615                 }
 616         }
 617         enumerator->destroy(enumerator);
 618         this->mutex_algs->unlock(this->mutex_algs);
 619         return found;
 620 }
 621
 622 METHOD(kernel_interface_t, destroy, void,
 623         private_kernel_interface_t *this)
 624 {
 625         kernel_algorithm_t *algorithm;
 626
 627         while (this->algorithms->remove_first(this->algorithms,
 628                                                                                  (void**)&algorithm) == SUCCESS)
 629         {
 630                 free(algorithm->name);
 631                 free(algorithm);
 632         }
 633         this->algorithms->destroy(this->algorithms);
 634         this->mutex_algs->destroy(this->mutex_algs);
 635         DESTROY_IF(this->ipsec);
 636         DESTROY_IF(this->net);
 637         this->listeners->destroy(this->listeners);
 638         this->mutex->destroy(this->mutex);
 639         free(this);
 640 }
 641
 642 /*
 643  * Described in header-file
 644  */
 645 kernel_interface_t *kernel_interface_create()
 646 {
 647         private_kernel_interface_t *this;
 648
 649         INIT(this,
 650                 .public = {
 651                         .get_spi = _get_spi,
 652                         .get_cpi = _get_cpi,
 653                         .add_sa = _add_sa,
 654                         .update_sa = _update_sa,
 655                         .query_sa = _query_sa,
 656                         .del_sa = _del_sa,
 657                         .flush_sas = _flush_sas,
 658                         .add_policy = _add_policy,
 659                         .query_policy = _query_policy,
 660                         .del_policy = _del_policy,
 661                         .flush_policies = _flush_policies,
 662                         .get_source_addr = _get_source_addr,
 663                         .get_nexthop = _get_nexthop,
 664                         .get_interface = _get_interface,
 665                         .create_address_enumerator = _create_address_enumerator,
 666                         .add_ip = _add_ip,
 667                         .del_ip = _del_ip,
 668                         .add_route = _add_route,
 669                         .del_route = _del_route,
 670                         .bypass_socket = _bypass_socket,
 671                         .enable_udp_decap = _enable_udp_decap,
 672
 673                         .get_address_by_ts = _get_address_by_ts,
 674                         .add_ipsec_interface = _add_ipsec_interface,
 675                         .remove_ipsec_interface = _remove_ipsec_interface,
 676                         .add_net_interface = _add_net_interface,
 677                         .remove_net_interface = _remove_net_interface,
 678
 679                         .add_listener = _add_listener,
 680                         .remove_listener = _remove_listener,
 681                         .register_algorithm = _register_algorithm,
 682                         .lookup_algorithm = _lookup_algorithm,
 683                         .acquire = _acquire,
 684                         .expire = _expire,
 685                         .mapping = _mapping,
 686                         .migrate = _migrate,
 687                         .roam = _roam,
 688                         .destroy = _destroy,
 689                 },
 690                 .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
 691                 .listeners = linked_list_create(),
 692                 .mutex_algs = mutex_create(MUTEX_TYPE_DEFAULT),
 693                 .algorithms = linked_list_create(),
 694         );
 695
 696         return &this->public;
 697 }
 698