| 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 | |