ipsec_netbsd.c revision 1.38
1 /* $NetBSD: ipsec_netbsd.c,v 1.38 2016/07/07 06:55:43 msaitoh Exp $ */ 2 /* $KAME: esp_input.c,v 1.60 2001/09/04 08:43:19 itojun Exp $ */ 3 /* $KAME: ah_input.c,v 1.64 2001/09/04 08:43:19 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ipsec_netbsd.c,v 1.38 2016/07/07 06:55:43 msaitoh Exp $"); 36 37 #include "opt_inet.h" 38 #include "opt_ipsec.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/malloc.h> 43 #include <sys/mbuf.h> 44 #include <sys/domain.h> 45 #include <sys/protosw.h> 46 #include <sys/socket.h> 47 #include <sys/errno.h> 48 #include <sys/time.h> 49 #include <sys/kernel.h> 50 #include <sys/sysctl.h> 51 52 #include <net/if.h> 53 #include <net/route.h> 54 #include <net/netisr.h> 55 #include <sys/cpu.h> 56 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 #include <netinet/ip_var.h> 62 #include <netinet/ip_ecn.h> 63 #include <netinet/ip_icmp.h> 64 65 66 #include <netipsec/ipsec.h> 67 #include <netipsec/ipsec_var.h> 68 #include <netipsec/ipsec_private.h> 69 #include <netipsec/key.h> 70 #include <netipsec/keydb.h> 71 #include <netipsec/key_debug.h> 72 #include <netipsec/ah.h> 73 #include <netipsec/ah_var.h> 74 #include <netipsec/esp.h> 75 #include <netipsec/esp_var.h> 76 #include <netipsec/ipip_var.h> 77 #include <netipsec/ipcomp_var.h> 78 79 #ifdef INET6 80 #include <netipsec/ipsec6.h> 81 #include <netinet6/ip6protosw.h> 82 #include <netinet/icmp6.h> 83 #endif 84 85 #include <netipsec/key.h> 86 87 /* assumes that ip header and ah header are contiguous on mbuf */ 88 void* 89 ah4_ctlinput(int cmd, const struct sockaddr *sa, void *v) 90 { 91 struct ip *ip = v; 92 struct ah *ah; 93 struct icmp *icp; 94 struct secasvar *sav; 95 96 if (sa->sa_family != AF_INET || 97 sa->sa_len != sizeof(struct sockaddr_in)) 98 return NULL; 99 if ((unsigned)cmd >= PRC_NCMDS) 100 return NULL; 101 102 if (cmd == PRC_MSGSIZE && ip_mtudisc && ip && ip->ip_v == 4) { 103 /* 104 * Check to see if we have a valid SA corresponding to 105 * the address in the ICMP message payload. 106 */ 107 ah = (struct ah *)((char *)ip + (ip->ip_hl << 2)); 108 sav = KEY_ALLOCSA((const union sockaddr_union *)sa, 109 IPPROTO_AH, ah->ah_spi, 0, 0); 110 111 if (sav) { 112 if (sav->state == SADB_SASTATE_MATURE || 113 sav->state == SADB_SASTATE_DYING) { 114 115 /* 116 * Now that we've validated that we are actually 117 * communicating with the host indicated in the 118 * ICMP message, locate the ICMP header, 119 * recalculate the new MTU, and create the 120 * corresponding routing entry. 121 */ 122 icp = (struct icmp *)((char *)ip - 123 offsetof(struct icmp, icmp_ip)); 124 icmp_mtudisc(icp, ip->ip_dst); 125 126 } 127 KEY_FREESAV(&sav); 128 } 129 } 130 return NULL; 131 } 132 133 134 135 /* assumes that ip header and esp header are contiguous on mbuf */ 136 void* 137 esp4_ctlinput(int cmd, const struct sockaddr *sa, void *v) 138 { 139 struct ip *ip = v; 140 struct esp *esp; 141 struct icmp *icp; 142 struct secasvar *sav; 143 144 if (sa->sa_family != AF_INET || 145 sa->sa_len != sizeof(struct sockaddr_in)) 146 return NULL; 147 if ((unsigned)cmd >= PRC_NCMDS) 148 return NULL; 149 150 if (cmd == PRC_MSGSIZE && ip_mtudisc && ip && ip->ip_v == 4) { 151 /* 152 * Check to see if we have a valid SA corresponding to 153 * the address in the ICMP message payload. 154 */ 155 esp = (struct esp *)((char *)ip + (ip->ip_hl << 2)); 156 sav = KEY_ALLOCSA((const union sockaddr_union *)sa, 157 IPPROTO_ESP, esp->esp_spi, 0, 0); 158 159 if (sav) { 160 if (sav->state == SADB_SASTATE_MATURE || 161 sav->state == SADB_SASTATE_DYING) { 162 163 /* 164 * Now that we've validated that we are actually 165 * communicating with the host indicated in the 166 * ICMP message, locate the ICMP header, 167 * recalculate the new MTU, and create the 168 * corresponding routing entry. 169 */ 170 171 icp = (struct icmp *)((char *)ip - 172 offsetof(struct icmp, icmp_ip)); 173 icmp_mtudisc(icp, ip->ip_dst); 174 175 } 176 KEY_FREESAV(&sav); 177 } 178 } 179 return NULL; 180 } 181 182 #ifdef INET6 183 void * 184 ah6_ctlinput(int cmd, const struct sockaddr *sa, void *d) 185 { 186 const struct newah *ahp; 187 struct newah ah; 188 struct secasvar *sav; 189 struct ip6_hdr *ip6; 190 struct mbuf *m; 191 struct ip6ctlparam *ip6cp = NULL; 192 int off; 193 194 if (sa->sa_family != AF_INET6 || 195 sa->sa_len != sizeof(struct sockaddr_in6)) 196 return NULL; 197 if ((unsigned)cmd >= PRC_NCMDS) 198 return NULL; 199 200 /* if the parameter is from icmp6, decode it. */ 201 if (d != NULL) { 202 ip6cp = (struct ip6ctlparam *)d; 203 m = ip6cp->ip6c_m; 204 ip6 = ip6cp->ip6c_ip6; 205 off = ip6cp->ip6c_off; 206 } else { 207 m = NULL; 208 ip6 = NULL; 209 off = 0; 210 } 211 212 if (ip6) { 213 /* 214 * XXX: We assume that when ip6 is non NULL, 215 * M and OFF are valid. 216 */ 217 218 /* check if we can safely examine src and dst ports */ 219 if (m->m_pkthdr.len < off + sizeof(ah)) 220 return NULL; 221 222 if (m->m_len < off + sizeof(ah)) { 223 /* 224 * this should be rare case, 225 * so we compromise on this copy... 226 */ 227 m_copydata(m, off, sizeof(ah), &ah); 228 ahp = &ah; 229 } else 230 ahp = (struct newah *)(mtod(m, char *) + off); 231 232 if (cmd == PRC_MSGSIZE) { 233 int valid = 0; 234 235 /* 236 * Check to see if we have a valid SA corresponding 237 * to the address in the ICMP message payload. 238 */ 239 sav = KEY_ALLOCSA((const union sockaddr_union*)sa, 240 IPPROTO_AH, ahp->ah_spi, 0, 0); 241 242 if (sav) { 243 if (sav->state == SADB_SASTATE_MATURE || 244 sav->state == SADB_SASTATE_DYING) 245 valid++; 246 KEY_FREESAV(&sav); 247 } 248 249 /* XXX Further validation? */ 250 251 /* 252 * Depending on the value of "valid" and routing 253 * table size (mtudisc_{hi,lo}wat), we will: 254 * - recalcurate the new MTU and create the 255 * corresponding routing entry, or 256 * - ignore the MTU change notification. 257 */ 258 icmp6_mtudisc_update((struct ip6ctlparam *)d,valid); 259 } 260 261 /* we normally notify single pcb here */ 262 } else { 263 /* we normally notify any pcb here */ 264 } 265 return NULL; 266 } 267 268 269 270 void * 271 esp6_ctlinput(int cmd, const struct sockaddr *sa, void *d) 272 { 273 const struct newesp *espp; 274 struct newesp esp; 275 struct ip6ctlparam *ip6cp = NULL, ip6cp1; 276 struct secasvar *sav; 277 struct ip6_hdr *ip6; 278 struct mbuf *m; 279 int off; 280 281 if (sa->sa_family != AF_INET6 || 282 sa->sa_len != sizeof(struct sockaddr_in6)) 283 return NULL; 284 if ((unsigned)cmd >= PRC_NCMDS) 285 return NULL; 286 287 /* if the parameter is from icmp6, decode it. */ 288 if (d != NULL) { 289 ip6cp = (struct ip6ctlparam *)d; 290 m = ip6cp->ip6c_m; 291 ip6 = ip6cp->ip6c_ip6; 292 off = ip6cp->ip6c_off; 293 } else { 294 m = NULL; 295 ip6 = NULL; 296 off = 0; 297 } 298 299 if (ip6) { 300 /* 301 * Notify the error to all possible sockets via pfctlinput2. 302 * Since the upper layer information (such as protocol type, 303 * source and destination ports) is embedded in the encrypted 304 * data and might have been cut, we can't directly call 305 * an upper layer ctlinput function. However, the pcbnotify 306 * function will consider source and destination addresses 307 * as well as the flow info value, and may be able to find 308 * some PCB that should be notified. 309 * Although pfctlinput2 will call esp6_ctlinput(), there is 310 * no possibility of an infinite loop of function calls, 311 * because we don't pass the inner IPv6 header. 312 */ 313 memset(&ip6cp1, 0, sizeof(ip6cp1)); 314 ip6cp1.ip6c_src = ip6cp->ip6c_src; 315 pfctlinput2(cmd, sa, &ip6cp1); 316 317 /* 318 * Then go to special cases that need ESP header information. 319 * XXX: We assume that when ip6 is non NULL, 320 * M and OFF are valid. 321 */ 322 323 /* check if we can safely examine src and dst ports */ 324 if (m->m_pkthdr.len < off + sizeof(esp)) 325 return NULL; 326 327 if (m->m_len < off + sizeof(esp)) { 328 /* 329 * this should be rare case, 330 * so we compromise on this copy... 331 */ 332 m_copydata(m, off, sizeof(esp), &esp); 333 espp = &esp; 334 } else 335 espp = (struct newesp*)(mtod(m, char *) + off); 336 337 if (cmd == PRC_MSGSIZE) { 338 int valid = 0; 339 340 /* 341 * Check to see if we have a valid SA corresponding to 342 * the address in the ICMP message payload. 343 */ 344 345 sav = KEY_ALLOCSA((const union sockaddr_union*)sa, 346 IPPROTO_ESP, espp->esp_spi, 0, 0); 347 348 if (sav) { 349 if (sav->state == SADB_SASTATE_MATURE || 350 sav->state == SADB_SASTATE_DYING) 351 valid++; 352 KEY_FREESAV(&sav); 353 } 354 355 /* XXX Further validation? */ 356 357 /* 358 * Depending on the value of "valid" and routing table 359 * size (mtudisc_{hi,lo}wat), we will: 360 * - recalcurate the new MTU and create the 361 * corresponding routing entry, or 362 * - ignore the MTU change notification. 363 */ 364 icmp6_mtudisc_update((struct ip6ctlparam *)d, valid); 365 } 366 } else { 367 /* we normally notify any pcb here */ 368 } 369 return NULL; 370 } 371 #endif /* INET6 */ 372 373 static int 374 sysctl_ipsec(SYSCTLFN_ARGS) 375 { 376 int error, t; 377 struct sysctlnode node; 378 379 node = *rnode; 380 t = *(int*)rnode->sysctl_data; 381 node.sysctl_data = &t; 382 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 383 if (error || newp == NULL) 384 return (error); 385 386 switch (rnode->sysctl_num) { 387 case IPSECCTL_DEF_ESP_TRANSLEV: 388 case IPSECCTL_DEF_ESP_NETLEV: 389 case IPSECCTL_DEF_AH_TRANSLEV: 390 case IPSECCTL_DEF_AH_NETLEV: 391 if (t != IPSEC_LEVEL_USE && 392 t != IPSEC_LEVEL_REQUIRE) 393 return (EINVAL); 394 ipsec_invalpcbcacheall(); 395 break; 396 case IPSECCTL_DEF_POLICY: 397 if (t != IPSEC_POLICY_DISCARD && 398 t != IPSEC_POLICY_NONE) 399 return (EINVAL); 400 ipsec_invalpcbcacheall(); 401 break; 402 default: 403 return (EINVAL); 404 } 405 406 *(int*)rnode->sysctl_data = t; 407 408 return (0); 409 } 410 411 #ifdef IPSEC_DEBUG 412 static int 413 sysctl_ipsec_test(SYSCTLFN_ARGS) 414 { 415 int t, error; 416 struct sysctlnode node; 417 418 node = *rnode; 419 t = *(int*)rnode->sysctl_data; 420 node.sysctl_data = &t; 421 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 422 if (error || newp == NULL) 423 return (error); 424 425 if (t < 0 || t > 1) 426 return EINVAL; 427 428 if (rnode->sysctl_data == &ipsec_replay) 429 printf("ipsec: Anti-Replay service %s\n", 430 (t == 1) ? "deactivated" : "activated"); 431 else if (rnode->sysctl_data == &ipsec_integrity) 432 printf("ipsec: HMAC corruption %s\n", 433 (t == 0) ? "deactivated" : "activated"); 434 435 *(int*)rnode->sysctl_data = t; 436 437 return 0; 438 } 439 #endif 440 441 static int 442 sysctl_net_inet_ipsec_stats(SYSCTLFN_ARGS) 443 { 444 445 return (NETSTAT_SYSCTL(ipsecstat_percpu, IPSEC_NSTATS)); 446 } 447 448 static int 449 sysctl_net_inet_ah_stats(SYSCTLFN_ARGS) 450 { 451 452 return (NETSTAT_SYSCTL(ahstat_percpu, AH_NSTATS)); 453 } 454 455 static int 456 sysctl_net_inet_esp_stats(SYSCTLFN_ARGS) 457 { 458 459 return (NETSTAT_SYSCTL(espstat_percpu, ESP_NSTATS)); 460 } 461 462 static int 463 sysctl_net_inet_ipcomp_stats(SYSCTLFN_ARGS) 464 { 465 466 return (NETSTAT_SYSCTL(ipcompstat_percpu, IPCOMP_NSTATS)); 467 } 468 469 static int 470 sysctl_net_inet_ipip_stats(SYSCTLFN_ARGS) 471 { 472 473 return (NETSTAT_SYSCTL(ipipstat_percpu, IPIP_NSTATS)); 474 } 475 476 static int 477 sysctl_net_ipsec_enabled(SYSCTLFN_ARGS) 478 { 479 int newenabled, error; 480 struct sysctlnode node; 481 node = *rnode; 482 node.sysctl_data = &newenabled; 483 484 newenabled = ipsec_enabled; 485 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 486 if (error || newp == NULL) 487 return error; 488 489 switch (newenabled) { 490 case 0: 491 if (key_get_used()) 492 return EBUSY; 493 /*FALLTHROUGH*/ 494 case 1: 495 case 2: 496 ipsec_enabled = newenabled; 497 key_update_used(); 498 return 0; 499 default: 500 return EINVAL; 501 } 502 } 503 504 /* XXX will need a different oid at parent */ 505 SYSCTL_SETUP(sysctl_net_inet_ipsec_setup, "sysctl net.inet.ipsec subtree setup") 506 { 507 const struct sysctlnode *_ipsec; 508 int ipproto_ipsec; 509 510 sysctl_createv(clog, 0, NULL, NULL, 511 CTLFLAG_PERMANENT, 512 CTLTYPE_NODE, "inet", NULL, 513 NULL, 0, NULL, 0, 514 CTL_NET, PF_INET, CTL_EOL); 515 516 /* 517 * in numerical order: 518 * 519 * net.inet.ipip: CTL_NET.PF_INET.IPPROTO_IPIP 520 * net.inet.esp: CTL_NET.PF_INET.IPPROTO_ESP 521 * net.inet.ah: CTL_NET.PF_INET.IPPROTO_AH 522 * net.inet.ipcomp: CTL_NET.PF_INET.IPPROTO_IPCOMP 523 * net.inet.ipsec: CTL_NET.PF_INET.CTL_CREATE 524 * 525 * this creates separate trees by name, but maintains that the 526 * ipsec name leads to all the old leaves. 527 */ 528 529 /* create net.inet.ipip */ 530 sysctl_createv(clog, 0, NULL, NULL, 531 CTLFLAG_PERMANENT, 532 CTLTYPE_NODE, "ipip", NULL, 533 NULL, 0, NULL, 0, 534 CTL_NET, PF_INET, IPPROTO_IPIP, CTL_EOL); 535 sysctl_createv(clog, 0, NULL, NULL, 536 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 537 CTLTYPE_STRUCT, "ipip_stats", NULL, 538 sysctl_net_inet_ipip_stats, 0, NULL, 0, 539 CTL_NET, PF_INET, IPPROTO_IPIP, 540 CTL_CREATE, CTL_EOL); 541 542 /* create net.inet.esp subtree under IPPROTO_ESP */ 543 sysctl_createv(clog, 0, NULL, NULL, 544 CTLFLAG_PERMANENT, 545 CTLTYPE_NODE, "esp", NULL, 546 NULL, 0, NULL, 0, 547 CTL_NET, PF_INET, IPPROTO_ESP, CTL_EOL); 548 sysctl_createv(clog, 0, NULL, NULL, 549 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 550 CTLTYPE_INT, "trans_deflev", NULL, 551 sysctl_ipsec, 0, &ip4_esp_trans_deflev, 0, 552 CTL_NET, PF_INET, IPPROTO_ESP, 553 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 554 sysctl_createv(clog, 0, NULL, NULL, 555 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 556 CTLTYPE_INT, "net_deflev", NULL, 557 sysctl_ipsec, 0, &ip4_esp_net_deflev, 0, 558 CTL_NET, PF_INET, IPPROTO_ESP, 559 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 560 sysctl_createv(clog, 0, NULL, NULL, 561 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 562 CTLTYPE_STRUCT, "esp_stats", NULL, 563 sysctl_net_inet_esp_stats, 0, NULL, 0, 564 CTL_NET, PF_INET, IPPROTO_ESP, 565 CTL_CREATE, CTL_EOL); 566 567 /* create net.inet.ah subtree under IPPROTO_AH */ 568 sysctl_createv(clog, 0, NULL, NULL, 569 CTLFLAG_PERMANENT, 570 CTLTYPE_NODE, "ah", NULL, 571 NULL, 0, NULL, 0, 572 CTL_NET, PF_INET, IPPROTO_AH, CTL_EOL); 573 sysctl_createv(clog, 0, NULL, NULL, 574 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 575 CTLTYPE_INT, "cleartos", NULL, 576 NULL, 0, &ip4_ah_cleartos, 0, 577 CTL_NET, PF_INET, IPPROTO_AH, 578 IPSECCTL_AH_CLEARTOS, CTL_EOL); 579 sysctl_createv(clog, 0, NULL, NULL, 580 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 581 CTLTYPE_INT, "offsetmask", NULL, 582 NULL, 0, &ip4_ah_offsetmask, 0, 583 CTL_NET, PF_INET, IPPROTO_AH, 584 IPSECCTL_AH_OFFSETMASK, CTL_EOL); 585 sysctl_createv(clog, 0, NULL, NULL, 586 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 587 CTLTYPE_INT, "trans_deflev", NULL, 588 sysctl_ipsec, 0, &ip4_ah_trans_deflev, 0, 589 CTL_NET, PF_INET, IPPROTO_AH, 590 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 591 sysctl_createv(clog, 0, NULL, NULL, 592 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 593 CTLTYPE_INT, "net_deflev", NULL, 594 sysctl_ipsec, 0, &ip4_ah_net_deflev, 0, 595 CTL_NET, PF_INET, IPPROTO_AH, 596 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 597 sysctl_createv(clog, 0, NULL, NULL, 598 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 599 CTLTYPE_STRUCT, "ah_stats", NULL, 600 sysctl_net_inet_ah_stats, 0, NULL, 0, 601 CTL_NET, PF_INET, IPPROTO_AH, 602 CTL_CREATE, CTL_EOL); 603 604 /* create net.inet.ipcomp */ 605 sysctl_createv(clog, 0, NULL, NULL, 606 CTLFLAG_PERMANENT, 607 CTLTYPE_NODE, "ipcomp", NULL, 608 NULL, 0, NULL, 0, 609 CTL_NET, PF_INET, IPPROTO_IPCOMP, CTL_EOL); 610 sysctl_createv(clog, 0, NULL, NULL, 611 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 612 CTLTYPE_STRUCT, "ipcomp_stats", NULL, 613 sysctl_net_inet_ipcomp_stats, 0, NULL, 0, 614 CTL_NET, PF_INET, IPPROTO_IPCOMP, 615 CTL_CREATE, CTL_EOL); 616 617 /* create net.inet.ipsec subtree under dynamic oid */ 618 sysctl_createv(clog, 0, NULL, &_ipsec, 619 CTLFLAG_PERMANENT, 620 CTLTYPE_NODE, "ipsec", NULL, 621 NULL, 0, NULL, 0, 622 CTL_NET, PF_INET, CTL_CREATE, CTL_EOL); 623 ipproto_ipsec = (_ipsec != NULL) ? _ipsec->sysctl_num : 0; 624 625 sysctl_createv(clog, 0, NULL, NULL, 626 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 627 CTLTYPE_INT, "def_policy", NULL, 628 sysctl_ipsec, 0, &ip4_def_policy.policy, 0, 629 CTL_NET, PF_INET, ipproto_ipsec, 630 IPSECCTL_DEF_POLICY, CTL_EOL); 631 sysctl_createv(clog, 0, NULL, NULL, 632 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 633 CTLTYPE_INT, "esp_trans_deflev", NULL, 634 sysctl_ipsec, 0, &ip4_esp_trans_deflev, 0, 635 CTL_NET, PF_INET, ipproto_ipsec, 636 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 637 sysctl_createv(clog, 0, NULL, NULL, 638 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 639 CTLTYPE_INT, "esp_net_deflev", NULL, 640 sysctl_ipsec, 0, &ip4_esp_net_deflev, 0, 641 CTL_NET, PF_INET, ipproto_ipsec, 642 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 643 sysctl_createv(clog, 0, NULL, NULL, 644 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 645 CTLTYPE_INT, "ah_trans_deflev", NULL, 646 sysctl_ipsec, 0, &ip4_ah_trans_deflev, 0, 647 CTL_NET, PF_INET, ipproto_ipsec, 648 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 649 sysctl_createv(clog, 0, NULL, NULL, 650 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 651 CTLTYPE_INT, "ah_net_deflev", NULL, 652 sysctl_ipsec, 0, &ip4_ah_net_deflev, 0, 653 CTL_NET, PF_INET, ipproto_ipsec, 654 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 655 sysctl_createv(clog, 0, NULL, NULL, 656 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 657 CTLTYPE_INT, "ah_cleartos", NULL, 658 NULL, 0, &ip4_ah_cleartos, 0, 659 CTL_NET, PF_INET, ipproto_ipsec, 660 IPSECCTL_AH_CLEARTOS, CTL_EOL); 661 sysctl_createv(clog, 0, NULL, NULL, 662 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 663 CTLTYPE_INT, "ah_offsetmask", NULL, 664 NULL, 0, &ip4_ah_offsetmask, 0, 665 CTL_NET, PF_INET, ipproto_ipsec, 666 IPSECCTL_AH_OFFSETMASK, CTL_EOL); 667 sysctl_createv(clog, 0, NULL, NULL, 668 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 669 CTLTYPE_INT, "dfbit", NULL, 670 NULL, 0, &ip4_ipsec_dfbit, 0, 671 CTL_NET, PF_INET, ipproto_ipsec, 672 IPSECCTL_DFBIT, CTL_EOL); 673 sysctl_createv(clog, 0, NULL, NULL, 674 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 675 CTLTYPE_INT, "ecn", NULL, 676 NULL, 0, &ip4_ipsec_ecn, 0, 677 CTL_NET, PF_INET, ipproto_ipsec, 678 IPSECCTL_ECN, CTL_EOL); 679 sysctl_createv(clog, 0, NULL, NULL, 680 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 681 CTLTYPE_INT, "debug", NULL, 682 NULL, 0, &ipsec_debug, 0, 683 CTL_NET, PF_INET, ipproto_ipsec, 684 IPSECCTL_DEBUG, CTL_EOL); 685 sysctl_createv(clog, 0, NULL, NULL, 686 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 687 CTLTYPE_STRUCT, "ipsecstats", NULL, 688 sysctl_net_inet_ipsec_stats, 0, NULL, 0, 689 CTL_NET, PF_INET, ipproto_ipsec, 690 CTL_CREATE, CTL_EOL); 691 sysctl_createv(clog, 0, NULL, NULL, 692 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 693 CTLTYPE_INT, "enabled", 694 SYSCTL_DESCR("Enable IPSec processing"), 695 sysctl_net_ipsec_enabled, 0, NULL, 0, 696 CTL_NET, PF_INET, ipproto_ipsec, 697 CTL_CREATE, CTL_EOL); 698 sysctl_createv(clog, 0, NULL, NULL, 699 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 700 CTLTYPE_INT, "used", 701 SYSCTL_DESCR("Is IPSec active?"), 702 NULL, 0, &ipsec_used, 0, 703 CTL_NET, PF_INET, ipproto_ipsec, 704 CTL_CREATE, CTL_EOL); 705 #ifdef IPSEC_DEBUG 706 sysctl_createv(clog, 0, NULL, NULL, 707 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 708 CTLTYPE_INT, "test_replay", 709 SYSCTL_DESCR("Emulate replay attack"), 710 sysctl_ipsec_test, 0, &ipsec_replay, 0, 711 CTL_NET, PF_INET, ipproto_ipsec, 712 CTL_CREATE, CTL_EOL); 713 sysctl_createv(clog, 0, NULL, NULL, 714 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 715 CTLTYPE_INT, "test_integrity", 716 SYSCTL_DESCR("Emulate man-in-the-middle attack"), 717 sysctl_ipsec_test, 0, &ipsec_integrity, 0, 718 CTL_NET, PF_INET, ipproto_ipsec, 719 CTL_CREATE, CTL_EOL); 720 #endif 721 } 722 723 #ifdef INET6 724 SYSCTL_SETUP(sysctl_net_inet6_ipsec6_setup, 725 "sysctl net.inet6.ipsec6 subtree setup") 726 { 727 728 sysctl_createv(clog, 0, NULL, NULL, 729 CTLFLAG_PERMANENT, 730 CTLTYPE_NODE, "inet6", NULL, 731 NULL, 0, NULL, 0, 732 CTL_NET, PF_INET6, CTL_EOL); 733 sysctl_createv(clog, 0, NULL, NULL, 734 CTLFLAG_PERMANENT, 735 CTLTYPE_NODE, "ipsec6", 736 SYSCTL_DESCR("IPv6 related IPSec settings"), 737 NULL, 0, NULL, 0, 738 CTL_NET, PF_INET6, IPPROTO_AH, CTL_EOL); 739 740 sysctl_createv(clog, 0, NULL, NULL, 741 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 742 CTLTYPE_STRUCT, "stats", 743 SYSCTL_DESCR("IPSec statistics and counters"), 744 sysctl_net_inet_ipsec_stats, 0, NULL, 0, 745 CTL_NET, PF_INET6, IPPROTO_AH, 746 IPSECCTL_STATS, CTL_EOL); 747 sysctl_createv(clog, 0, NULL, NULL, 748 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 749 CTLTYPE_INT, "def_policy", 750 SYSCTL_DESCR("Default action for non-IPSec packets"), 751 sysctl_ipsec, 0, (void *)&ip6_def_policy, 0, 752 CTL_NET, PF_INET6, IPPROTO_AH, 753 IPSECCTL_DEF_POLICY, CTL_EOL); 754 sysctl_createv(clog, 0, NULL, NULL, 755 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 756 CTLTYPE_INT, "esp_trans_deflev", 757 SYSCTL_DESCR("Default required security level for " 758 "transport mode traffic"), 759 sysctl_ipsec, 0, &ip6_esp_trans_deflev, 0, 760 CTL_NET, PF_INET6, IPPROTO_AH, 761 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 762 sysctl_createv(clog, 0, NULL, NULL, 763 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 764 CTLTYPE_INT, "esp_net_deflev", 765 SYSCTL_DESCR("Default required security level for " 766 "tunneled traffic"), 767 sysctl_ipsec, 0, &ip6_esp_net_deflev, 0, 768 CTL_NET, PF_INET6, IPPROTO_AH, 769 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 770 sysctl_createv(clog, 0, NULL, NULL, 771 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 772 CTLTYPE_INT, "ah_trans_deflev", 773 SYSCTL_DESCR("Default required security level for " 774 "transport mode headers"), 775 sysctl_ipsec, 0, &ip6_ah_trans_deflev, 0, 776 CTL_NET, PF_INET6, IPPROTO_AH, 777 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 778 sysctl_createv(clog, 0, NULL, NULL, 779 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 780 CTLTYPE_INT, "ah_net_deflev", 781 SYSCTL_DESCR("Default required security level for " 782 "tunneled headers"), 783 sysctl_ipsec, 0, &ip6_ah_net_deflev, 0, 784 CTL_NET, PF_INET6, IPPROTO_AH, 785 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 786 sysctl_createv(clog, 0, NULL, NULL, 787 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 788 CTLTYPE_INT, "ecn", 789 SYSCTL_DESCR("Behavior of ECN for tunneled traffic"), 790 NULL, 0, &ip6_ipsec_ecn, 0, 791 CTL_NET, PF_INET6, IPPROTO_AH, 792 IPSECCTL_ECN, CTL_EOL); 793 sysctl_createv(clog, 0, NULL, NULL, 794 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 795 CTLTYPE_INT, "debug", 796 SYSCTL_DESCR("Enable IPSec debugging output"), 797 NULL, 0, &ipsec_debug, 0, 798 CTL_NET, PF_INET6, IPPROTO_AH, 799 IPSECCTL_DEBUG, CTL_EOL); 800 sysctl_createv(clog, 0, NULL, NULL, 801 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 802 CTLTYPE_INT, "enabled", 803 SYSCTL_DESCR("Enable IPSec processing"), 804 sysctl_net_ipsec_enabled, 0, NULL, 0, 805 CTL_NET, PF_INET6, IPPROTO_AH, 806 CTL_CREATE, CTL_EOL); 807 sysctl_createv(clog, 0, NULL, NULL, 808 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 809 CTLTYPE_INT, "used", 810 SYSCTL_DESCR("Is IPSec active?"), 811 NULL, 0, &ipsec_used, 0, 812 CTL_NET, PF_INET6, IPPROTO_AH, 813 CTL_CREATE, CTL_EOL); 814 /* 815 * "aliases" for the ipsec6 subtree 816 */ 817 sysctl_createv(clog, 0, NULL, NULL, 818 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 819 CTLTYPE_NODE, "esp6", NULL, 820 NULL, IPPROTO_AH, NULL, 0, 821 CTL_NET, PF_INET6, IPPROTO_ESP, CTL_EOL); 822 sysctl_createv(clog, 0, NULL, NULL, 823 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 824 CTLTYPE_NODE, "ipcomp6", NULL, 825 NULL, IPPROTO_AH, NULL, 0, 826 CTL_NET, PF_INET6, IPPROTO_IPCOMP, CTL_EOL); 827 sysctl_createv(clog, 0, NULL, NULL, 828 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 829 CTLTYPE_NODE, "ah6", NULL, 830 NULL, IPPROTO_AH, NULL, 0, 831 CTL_NET, PF_INET6, CTL_CREATE, CTL_EOL); 832 } 833 #endif /* INET6 */ 834
Indexes created Mon Sep 22 05:09:51 GMT 2025