ipsec_netbsd.c revision 1.33.2.2
1 /* $NetBSD: ipsec_netbsd.c,v 1.33.2.2 2014/05/22 11:41:10 yamt 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 1.33.2.2 2014/05/22 11:41:10 yamt 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 /* XXX will need a different oid at parent */ 477 SYSCTL_SETUP(sysctl_net_inet_ipsec_setup, "sysctl net.inet.ipsec subtree setup") 478 { 479 const struct sysctlnode *_ipsec; 480 int ipproto_ipsec; 481 482 sysctl_createv(clog, 0, NULL, NULL, 483 CTLFLAG_PERMANENT, 484 CTLTYPE_NODE, "inet", NULL, 485 NULL, 0, NULL, 0, 486 CTL_NET, PF_INET, CTL_EOL); 487 488 /* 489 * in numerical order: 490 * 491 * net.inet.ipip: CTL_NET.PF_INET.IPPROTO_IPIP 492 * net.inet.esp: CTL_NET.PF_INET.IPPROTO_ESP 493 * net.inet.ah: CTL_NET.PF_INET.IPPROTO_AH 494 * net.inet.ipcomp: CTL_NET.PF_INET.IPPROTO_IPCOMP 495 * net.inet.ipsec: CTL_NET.PF_INET.CTL_CREATE 496 * 497 * this creates separate trees by name, but maintains that the 498 * ipsec name leads to all the old leaves. 499 */ 500 501 /* create net.inet.ipip */ 502 sysctl_createv(clog, 0, NULL, NULL, 503 CTLFLAG_PERMANENT, 504 CTLTYPE_NODE, "ipip", NULL, 505 NULL, 0, NULL, 0, 506 CTL_NET, PF_INET, IPPROTO_IPIP, CTL_EOL); 507 sysctl_createv(clog, 0, NULL, NULL, 508 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 509 CTLTYPE_STRUCT, "ipip_stats", NULL, 510 sysctl_net_inet_ipip_stats, 0, NULL, 0, 511 CTL_NET, PF_INET, IPPROTO_IPIP, 512 CTL_CREATE, CTL_EOL); 513 514 /* create net.inet.esp subtree under IPPROTO_ESP */ 515 sysctl_createv(clog, 0, NULL, NULL, 516 CTLFLAG_PERMANENT, 517 CTLTYPE_NODE, "esp", NULL, 518 NULL, 0, NULL, 0, 519 CTL_NET, PF_INET, IPPROTO_ESP, CTL_EOL); 520 sysctl_createv(clog, 0, NULL, NULL, 521 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 522 CTLTYPE_INT, "trans_deflev", NULL, 523 sysctl_ipsec, 0, &ip4_esp_trans_deflev, 0, 524 CTL_NET, PF_INET, IPPROTO_ESP, 525 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 526 sysctl_createv(clog, 0, NULL, NULL, 527 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 528 CTLTYPE_INT, "net_deflev", NULL, 529 sysctl_ipsec, 0, &ip4_esp_net_deflev, 0, 530 CTL_NET, PF_INET, IPPROTO_ESP, 531 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 532 sysctl_createv(clog, 0, NULL, NULL, 533 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 534 CTLTYPE_STRUCT, "esp_stats", NULL, 535 sysctl_net_inet_esp_stats, 0, NULL, 0, 536 CTL_NET, PF_INET, IPPROTO_ESP, 537 CTL_CREATE, CTL_EOL); 538 539 /* create net.inet.ah subtree under IPPROTO_AH */ 540 sysctl_createv(clog, 0, NULL, NULL, 541 CTLFLAG_PERMANENT, 542 CTLTYPE_NODE, "ah", NULL, 543 NULL, 0, NULL, 0, 544 CTL_NET, PF_INET, IPPROTO_AH, CTL_EOL); 545 sysctl_createv(clog, 0, NULL, NULL, 546 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 547 CTLTYPE_INT, "cleartos", NULL, 548 NULL, 0, &ip4_ah_cleartos, 0, 549 CTL_NET, PF_INET, IPPROTO_AH, 550 IPSECCTL_AH_CLEARTOS, CTL_EOL); 551 sysctl_createv(clog, 0, NULL, NULL, 552 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 553 CTLTYPE_INT, "offsetmask", NULL, 554 NULL, 0, &ip4_ah_offsetmask, 0, 555 CTL_NET, PF_INET, IPPROTO_AH, 556 IPSECCTL_AH_OFFSETMASK, CTL_EOL); 557 sysctl_createv(clog, 0, NULL, NULL, 558 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 559 CTLTYPE_INT, "trans_deflev", NULL, 560 sysctl_ipsec, 0, &ip4_ah_trans_deflev, 0, 561 CTL_NET, PF_INET, IPPROTO_AH, 562 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 563 sysctl_createv(clog, 0, NULL, NULL, 564 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 565 CTLTYPE_INT, "net_deflev", NULL, 566 sysctl_ipsec, 0, &ip4_ah_net_deflev, 0, 567 CTL_NET, PF_INET, IPPROTO_AH, 568 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 569 sysctl_createv(clog, 0, NULL, NULL, 570 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 571 CTLTYPE_STRUCT, "ah_stats", NULL, 572 sysctl_net_inet_ah_stats, 0, NULL, 0, 573 CTL_NET, PF_INET, IPPROTO_AH, 574 CTL_CREATE, CTL_EOL); 575 576 /* create net.inet.ipcomp */ 577 sysctl_createv(clog, 0, NULL, NULL, 578 CTLFLAG_PERMANENT, 579 CTLTYPE_NODE, "ipcomp", NULL, 580 NULL, 0, NULL, 0, 581 CTL_NET, PF_INET, IPPROTO_IPCOMP, CTL_EOL); 582 sysctl_createv(clog, 0, NULL, NULL, 583 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 584 CTLTYPE_STRUCT, "ipcomp_stats", NULL, 585 sysctl_net_inet_ipcomp_stats, 0, NULL, 0, 586 CTL_NET, PF_INET, IPPROTO_IPCOMP, 587 CTL_CREATE, CTL_EOL); 588 589 /* create net.inet.ipsec subtree under dynamic oid */ 590 sysctl_createv(clog, 0, NULL, &_ipsec, 591 CTLFLAG_PERMANENT, 592 CTLTYPE_NODE, "ipsec", NULL, 593 NULL, 0, NULL, 0, 594 CTL_NET, PF_INET, CTL_CREATE, CTL_EOL); 595 ipproto_ipsec = (_ipsec != NULL) ? _ipsec->sysctl_num : 0; 596 597 sysctl_createv(clog, 0, NULL, NULL, 598 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 599 CTLTYPE_INT, "def_policy", NULL, 600 sysctl_ipsec, 0, &ip4_def_policy.policy, 0, 601 CTL_NET, PF_INET, ipproto_ipsec, 602 IPSECCTL_DEF_POLICY, CTL_EOL); 603 sysctl_createv(clog, 0, NULL, NULL, 604 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 605 CTLTYPE_INT, "esp_trans_deflev", NULL, 606 sysctl_ipsec, 0, &ip4_esp_trans_deflev, 0, 607 CTL_NET, PF_INET, ipproto_ipsec, 608 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 609 sysctl_createv(clog, 0, NULL, NULL, 610 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 611 CTLTYPE_INT, "esp_net_deflev", NULL, 612 sysctl_ipsec, 0, &ip4_esp_net_deflev, 0, 613 CTL_NET, PF_INET, ipproto_ipsec, 614 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 615 sysctl_createv(clog, 0, NULL, NULL, 616 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 617 CTLTYPE_INT, "ah_trans_deflev", NULL, 618 sysctl_ipsec, 0, &ip4_ah_trans_deflev, 0, 619 CTL_NET, PF_INET, ipproto_ipsec, 620 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 621 sysctl_createv(clog, 0, NULL, NULL, 622 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 623 CTLTYPE_INT, "ah_net_deflev", NULL, 624 sysctl_ipsec, 0, &ip4_ah_net_deflev, 0, 625 CTL_NET, PF_INET, ipproto_ipsec, 626 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 627 sysctl_createv(clog, 0, NULL, NULL, 628 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 629 CTLTYPE_INT, "ah_cleartos", NULL, 630 NULL, 0, &ip4_ah_cleartos, 0, 631 CTL_NET, PF_INET, ipproto_ipsec, 632 IPSECCTL_AH_CLEARTOS, CTL_EOL); 633 sysctl_createv(clog, 0, NULL, NULL, 634 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 635 CTLTYPE_INT, "ah_offsetmask", NULL, 636 NULL, 0, &ip4_ah_offsetmask, 0, 637 CTL_NET, PF_INET, ipproto_ipsec, 638 IPSECCTL_AH_OFFSETMASK, CTL_EOL); 639 sysctl_createv(clog, 0, NULL, NULL, 640 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 641 CTLTYPE_INT, "dfbit", NULL, 642 NULL, 0, &ip4_ipsec_dfbit, 0, 643 CTL_NET, PF_INET, ipproto_ipsec, 644 IPSECCTL_DFBIT, CTL_EOL); 645 sysctl_createv(clog, 0, NULL, NULL, 646 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 647 CTLTYPE_INT, "ecn", NULL, 648 NULL, 0, &ip4_ipsec_ecn, 0, 649 CTL_NET, PF_INET, ipproto_ipsec, 650 IPSECCTL_ECN, CTL_EOL); 651 sysctl_createv(clog, 0, NULL, NULL, 652 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 653 CTLTYPE_INT, "debug", NULL, 654 NULL, 0, &ipsec_debug, 0, 655 CTL_NET, PF_INET, ipproto_ipsec, 656 IPSECCTL_DEBUG, CTL_EOL); 657 sysctl_createv(clog, 0, NULL, NULL, 658 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 659 CTLTYPE_STRUCT, "ipsecstats", NULL, 660 sysctl_net_inet_ipsec_stats, 0, NULL, 0, 661 CTL_NET, PF_INET, ipproto_ipsec, 662 CTL_CREATE, CTL_EOL); 663 #ifdef IPSEC_DEBUG 664 sysctl_createv(clog, 0, NULL, NULL, 665 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 666 CTLTYPE_INT, "test_replay", 667 SYSCTL_DESCR("Emulate replay attack"), 668 sysctl_ipsec_test, 0, &ipsec_replay, 0, 669 CTL_NET, PF_INET, ipproto_ipsec, 670 CTL_CREATE, CTL_EOL); 671 sysctl_createv(clog, 0, NULL, NULL, 672 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 673 CTLTYPE_INT, "test_integrity", 674 SYSCTL_DESCR("Emulate man-in-the-middle attack"), 675 sysctl_ipsec_test, 0, &ipsec_integrity, 0, 676 CTL_NET, PF_INET, ipproto_ipsec, 677 CTL_CREATE, CTL_EOL); 678 #endif 679 } 680 681 #ifdef INET6 682 SYSCTL_SETUP(sysctl_net_inet6_ipsec6_setup, 683 "sysctl net.inet6.ipsec6 subtree setup") 684 { 685 686 sysctl_createv(clog, 0, NULL, NULL, 687 CTLFLAG_PERMANENT, 688 CTLTYPE_NODE, "inet6", NULL, 689 NULL, 0, NULL, 0, 690 CTL_NET, PF_INET6, CTL_EOL); 691 sysctl_createv(clog, 0, NULL, NULL, 692 CTLFLAG_PERMANENT, 693 CTLTYPE_NODE, "ipsec6", 694 SYSCTL_DESCR("IPv6 related IPSec settings"), 695 NULL, 0, NULL, 0, 696 CTL_NET, PF_INET6, IPPROTO_AH, CTL_EOL); 697 698 sysctl_createv(clog, 0, NULL, NULL, 699 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 700 CTLTYPE_STRUCT, "stats", 701 SYSCTL_DESCR("IPSec statistics and counters"), 702 sysctl_net_inet_ipsec_stats, 0, NULL, 0, 703 CTL_NET, PF_INET6, IPPROTO_AH, 704 IPSECCTL_STATS, CTL_EOL); 705 sysctl_createv(clog, 0, NULL, NULL, 706 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 707 CTLTYPE_INT, "def_policy", 708 SYSCTL_DESCR("Default action for non-IPSec packets"), 709 sysctl_ipsec, 0, (void *)&ip6_def_policy, 0, 710 CTL_NET, PF_INET6, IPPROTO_AH, 711 IPSECCTL_DEF_POLICY, CTL_EOL); 712 sysctl_createv(clog, 0, NULL, NULL, 713 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 714 CTLTYPE_INT, "esp_trans_deflev", 715 SYSCTL_DESCR("Default required security level for " 716 "transport mode traffic"), 717 sysctl_ipsec, 0, &ip6_esp_trans_deflev, 0, 718 CTL_NET, PF_INET6, IPPROTO_AH, 719 IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL); 720 sysctl_createv(clog, 0, NULL, NULL, 721 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 722 CTLTYPE_INT, "esp_net_deflev", 723 SYSCTL_DESCR("Default required security level for " 724 "tunneled traffic"), 725 sysctl_ipsec, 0, &ip6_esp_net_deflev, 0, 726 CTL_NET, PF_INET6, IPPROTO_AH, 727 IPSECCTL_DEF_ESP_NETLEV, CTL_EOL); 728 sysctl_createv(clog, 0, NULL, NULL, 729 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 730 CTLTYPE_INT, "ah_trans_deflev", 731 SYSCTL_DESCR("Default required security level for " 732 "transport mode headers"), 733 sysctl_ipsec, 0, &ip6_ah_trans_deflev, 0, 734 CTL_NET, PF_INET6, IPPROTO_AH, 735 IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL); 736 sysctl_createv(clog, 0, NULL, NULL, 737 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 738 CTLTYPE_INT, "ah_net_deflev", 739 SYSCTL_DESCR("Default required security level for " 740 "tunneled headers"), 741 sysctl_ipsec, 0, &ip6_ah_net_deflev, 0, 742 CTL_NET, PF_INET6, IPPROTO_AH, 743 IPSECCTL_DEF_AH_NETLEV, CTL_EOL); 744 sysctl_createv(clog, 0, NULL, NULL, 745 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 746 CTLTYPE_INT, "ecn", 747 SYSCTL_DESCR("Behavior of ECN for tunneled traffic"), 748 NULL, 0, &ip6_ipsec_ecn, 0, 749 CTL_NET, PF_INET6, IPPROTO_AH, 750 IPSECCTL_ECN, CTL_EOL); 751 sysctl_createv(clog, 0, NULL, NULL, 752 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 753 CTLTYPE_INT, "debug", 754 SYSCTL_DESCR("Enable IPSec debugging output"), 755 NULL, 0, &ipsec_debug, 0, 756 CTL_NET, PF_INET6, IPPROTO_AH, 757 IPSECCTL_DEBUG, CTL_EOL); 758 759 /* 760 * "aliases" for the ipsec6 subtree 761 */ 762 sysctl_createv(clog, 0, NULL, NULL, 763 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 764 CTLTYPE_NODE, "esp6", NULL, 765 NULL, IPPROTO_AH, NULL, 0, 766 CTL_NET, PF_INET6, IPPROTO_ESP, CTL_EOL); 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 769 CTLTYPE_NODE, "ipcomp6", NULL, 770 NULL, IPPROTO_AH, NULL, 0, 771 CTL_NET, PF_INET6, IPPROTO_IPCOMP, CTL_EOL); 772 sysctl_createv(clog, 0, NULL, NULL, 773 CTLFLAG_PERMANENT|CTLFLAG_ALIAS, 774 CTLTYPE_NODE, "ah6", NULL, 775 NULL, IPPROTO_AH, NULL, 0, 776 CTL_NET, PF_INET6, CTL_CREATE, CTL_EOL); 777 } 778 #endif /* INET6 */ 779
Indexes created Fri Sep 26 20:09:58 GMT 2025