rtsock.c revision 1.164.2.10
1 /* $NetBSD: rtsock.c,v 1.164.2.10 2016/12/05 10:55:27 skrll Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1988, 1991, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: rtsock.c,v 1.164.2.10 2016/12/05 10:55:27 skrll Exp $"); 65 66 #ifdef _KERNEL_OPT 67 #include "opt_inet.h" 68 #include "opt_mpls.h" 69 #include "opt_compat_netbsd.h" 70 #include "opt_sctp.h" 71 #endif 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/proc.h> 76 #include <sys/socket.h> 77 #include <sys/socketvar.h> 78 #include <sys/domain.h> 79 #include <sys/protosw.h> 80 #include <sys/sysctl.h> 81 #include <sys/kauth.h> 82 #include <sys/kmem.h> 83 #include <sys/intr.h> 84 85 #include <net/if.h> 86 #include <net/if_llatbl.h> 87 #include <net/if_types.h> 88 #include <net/route.h> 89 #include <net/raw_cb.h> 90 91 #include <netinet/in_var.h> 92 #include <netinet/if_inarp.h> 93 94 #include <netmpls/mpls.h> 95 96 #ifdef SCTP 97 extern void sctp_add_ip_address(struct ifaddr *); 98 extern void sctp_delete_ip_address(struct ifaddr *); 99 #endif 100 101 #if defined(COMPAT_14) || defined(COMPAT_50) || defined(COMPAT_70) 102 #include <compat/net/if.h> 103 #include <compat/net/route.h> 104 #endif 105 #ifdef COMPAT_RTSOCK 106 #define RTM_XVERSION RTM_OVERSION 107 #define RTM_XNEWADDR RTM_ONEWADDR 108 #define RTM_XDELADDR RTM_ODELADDR 109 #define RTM_XCHGADDR RTM_OCHGADDR 110 #define RT_XADVANCE(a,b) RT_OADVANCE(a,b) 111 #define RT_XROUNDUP(n) RT_OROUNDUP(n) 112 #define PF_XROUTE PF_OROUTE 113 #define rt_xmsghdr rt_msghdr50 114 #define if_xmsghdr if_msghdr /* if_msghdr50 is for RTM_OIFINFO */ 115 #define ifa_xmsghdr ifa_msghdr50 116 #define if_xannouncemsghdr if_announcemsghdr50 117 #define COMPATNAME(x) compat_50_ ## x 118 #define DOMAINNAME "oroute" 119 CTASSERT(sizeof(struct ifa_xmsghdr) == 20); 120 DOMAIN_DEFINE(compat_50_routedomain); /* forward declare and add to link set */ 121 #undef COMPAT_70 122 #else /* COMPAT_RTSOCK */ 123 #define RTM_XVERSION RTM_VERSION 124 #define RTM_XNEWADDR RTM_NEWADDR 125 #define RTM_XDELADDR RTM_DELADDR 126 #define RTM_XCHGADDR RTM_CHGADDR 127 #define RT_XADVANCE(a,b) RT_ADVANCE(a,b) 128 #define RT_XROUNDUP(n) RT_ROUNDUP(n) 129 #define PF_XROUTE PF_ROUTE 130 #define rt_xmsghdr rt_msghdr 131 #define if_xmsghdr if_msghdr 132 #define ifa_xmsghdr ifa_msghdr 133 #define if_xannouncemsghdr if_announcemsghdr 134 #define COMPATNAME(x) x 135 #define DOMAINNAME "route" 136 CTASSERT(sizeof(struct ifa_xmsghdr) == 32); 137 #ifdef COMPAT_50 138 #define COMPATCALL(name, args) compat_50_ ## name args 139 #endif 140 DOMAIN_DEFINE(routedomain); /* forward declare and add to link set */ 141 #undef COMPAT_50 142 #undef COMPAT_14 143 #endif /* COMPAT_RTSOCK */ 144 145 #ifndef COMPATCALL 146 #define COMPATCALL(name, args) do { } while (/*CONSTCOND*/ 0) 147 #endif 148 149 #ifdef RTSOCK_DEBUG 150 #define RT_IN_PRINT(info, b, a) (in_print((b), sizeof(b), \ 151 &((const struct sockaddr_in *)(info)->rti_info[(a)])->sin_addr), (b)) 152 #endif /* RTSOCK_DEBUG */ 153 154 struct route_info COMPATNAME(route_info) = { 155 .ri_dst = { .sa_len = 2, .sa_family = PF_XROUTE, }, 156 .ri_src = { .sa_len = 2, .sa_family = PF_XROUTE, }, 157 .ri_maxqlen = IFQ_MAXLEN, 158 }; 159 160 #define PRESERVED_RTF (RTF_UP | RTF_GATEWAY | RTF_HOST | RTF_DONE | RTF_MASK) 161 162 static void COMPATNAME(route_init)(void); 163 static int COMPATNAME(route_output)(struct mbuf *, struct socket *); 164 165 static int rt_xaddrs(u_char, const char *, const char *, struct rt_addrinfo *); 166 static struct mbuf *rt_makeifannouncemsg(struct ifnet *, int, int, 167 struct rt_addrinfo *); 168 static int rt_msg2(int, struct rt_addrinfo *, void *, struct rt_walkarg *, int *); 169 static void rt_setmetrics(int, const struct rt_xmsghdr *, struct rtentry *); 170 static void rtm_setmetrics(const struct rtentry *, struct rt_xmsghdr *); 171 static void sysctl_net_route_setup(struct sysctllog **); 172 static int sysctl_dumpentry(struct rtentry *, void *); 173 static int sysctl_iflist(int, struct rt_walkarg *, int); 174 static int sysctl_rtable(SYSCTLFN_PROTO); 175 static void rt_adjustcount(int, int); 176 177 static const struct protosw COMPATNAME(route_protosw)[]; 178 179 static void 180 rt_adjustcount(int af, int cnt) 181 { 182 struct route_cb * const cb = &COMPATNAME(route_info).ri_cb; 183 184 cb->any_count += cnt; 185 186 switch (af) { 187 case AF_INET: 188 cb->ip_count += cnt; 189 return; 190 #ifdef INET6 191 case AF_INET6: 192 cb->ip6_count += cnt; 193 return; 194 #endif 195 case AF_MPLS: 196 cb->mpls_count += cnt; 197 return; 198 } 199 } 200 201 static int 202 COMPATNAME(route_attach)(struct socket *so, int proto) 203 { 204 struct rawcb *rp; 205 int s, error; 206 207 KASSERT(sotorawcb(so) == NULL); 208 rp = kmem_zalloc(sizeof(*rp), KM_SLEEP); 209 rp->rcb_len = sizeof(*rp); 210 so->so_pcb = rp; 211 212 s = splsoftnet(); 213 if ((error = raw_attach(so, proto)) == 0) { 214 rt_adjustcount(rp->rcb_proto.sp_protocol, 1); 215 rp->rcb_laddr = &COMPATNAME(route_info).ri_src; 216 rp->rcb_faddr = &COMPATNAME(route_info).ri_dst; 217 } 218 splx(s); 219 220 if (error) { 221 kmem_free(rp, sizeof(*rp)); 222 so->so_pcb = NULL; 223 return error; 224 } 225 226 soisconnected(so); 227 so->so_options |= SO_USELOOPBACK; 228 KASSERT(solocked(so)); 229 230 return error; 231 } 232 233 static void 234 COMPATNAME(route_detach)(struct socket *so) 235 { 236 struct rawcb *rp = sotorawcb(so); 237 int s; 238 239 KASSERT(rp != NULL); 240 KASSERT(solocked(so)); 241 242 s = splsoftnet(); 243 rt_adjustcount(rp->rcb_proto.sp_protocol, -1); 244 raw_detach(so); 245 splx(s); 246 } 247 248 static int 249 COMPATNAME(route_accept)(struct socket *so, struct sockaddr *nam) 250 { 251 KASSERT(solocked(so)); 252 253 panic("route_accept"); 254 255 return EOPNOTSUPP; 256 } 257 258 static int 259 COMPATNAME(route_bind)(struct socket *so, struct sockaddr *nam, struct lwp *l) 260 { 261 KASSERT(solocked(so)); 262 263 return EOPNOTSUPP; 264 } 265 266 static int 267 COMPATNAME(route_listen)(struct socket *so, struct lwp *l) 268 { 269 KASSERT(solocked(so)); 270 271 return EOPNOTSUPP; 272 } 273 274 static int 275 COMPATNAME(route_connect)(struct socket *so, struct sockaddr *nam, struct lwp *l) 276 { 277 KASSERT(solocked(so)); 278 279 return EOPNOTSUPP; 280 } 281 282 static int 283 COMPATNAME(route_connect2)(struct socket *so, struct socket *so2) 284 { 285 KASSERT(solocked(so)); 286 287 return EOPNOTSUPP; 288 } 289 290 static int 291 COMPATNAME(route_disconnect)(struct socket *so) 292 { 293 struct rawcb *rp = sotorawcb(so); 294 int s; 295 296 KASSERT(solocked(so)); 297 KASSERT(rp != NULL); 298 299 s = splsoftnet(); 300 soisdisconnected(so); 301 raw_disconnect(rp); 302 splx(s); 303 304 return 0; 305 } 306 307 static int 308 COMPATNAME(route_shutdown)(struct socket *so) 309 { 310 int s; 311 312 KASSERT(solocked(so)); 313 314 /* 315 * Mark the connection as being incapable of further input. 316 */ 317 s = splsoftnet(); 318 socantsendmore(so); 319 splx(s); 320 return 0; 321 } 322 323 static int 324 COMPATNAME(route_abort)(struct socket *so) 325 { 326 KASSERT(solocked(so)); 327 328 panic("route_abort"); 329 330 return EOPNOTSUPP; 331 } 332 333 static int 334 COMPATNAME(route_ioctl)(struct socket *so, u_long cmd, void *nam, 335 struct ifnet * ifp) 336 { 337 return EOPNOTSUPP; 338 } 339 340 static int 341 COMPATNAME(route_stat)(struct socket *so, struct stat *ub) 342 { 343 KASSERT(solocked(so)); 344 345 return 0; 346 } 347 348 static int 349 COMPATNAME(route_peeraddr)(struct socket *so, struct sockaddr *nam) 350 { 351 struct rawcb *rp = sotorawcb(so); 352 353 KASSERT(solocked(so)); 354 KASSERT(rp != NULL); 355 KASSERT(nam != NULL); 356 357 if (rp->rcb_faddr == NULL) 358 return ENOTCONN; 359 360 raw_setpeeraddr(rp, nam); 361 return 0; 362 } 363 364 static int 365 COMPATNAME(route_sockaddr)(struct socket *so, struct sockaddr *nam) 366 { 367 struct rawcb *rp = sotorawcb(so); 368 369 KASSERT(solocked(so)); 370 KASSERT(rp != NULL); 371 KASSERT(nam != NULL); 372 373 if (rp->rcb_faddr == NULL) 374 return ENOTCONN; 375 376 raw_setsockaddr(rp, nam); 377 return 0; 378 } 379 380 static int 381 COMPATNAME(route_rcvd)(struct socket *so, int flags, struct lwp *l) 382 { 383 KASSERT(solocked(so)); 384 385 return EOPNOTSUPP; 386 } 387 388 static int 389 COMPATNAME(route_recvoob)(struct socket *so, struct mbuf *m, int flags) 390 { 391 KASSERT(solocked(so)); 392 393 return EOPNOTSUPP; 394 } 395 396 static int 397 COMPATNAME(route_send)(struct socket *so, struct mbuf *m, 398 struct sockaddr *nam, struct mbuf *control, struct lwp *l) 399 { 400 int error = 0; 401 int s; 402 403 KASSERT(solocked(so)); 404 KASSERT(so->so_proto == &COMPATNAME(route_protosw)[0]); 405 406 s = splsoftnet(); 407 error = raw_send(so, m, nam, control, l, &COMPATNAME(route_output)); 408 splx(s); 409 410 return error; 411 } 412 413 static int 414 COMPATNAME(route_sendoob)(struct socket *so, struct mbuf *m, 415 struct mbuf *control) 416 { 417 KASSERT(solocked(so)); 418 419 m_freem(m); 420 m_freem(control); 421 422 return EOPNOTSUPP; 423 } 424 static int 425 COMPATNAME(route_purgeif)(struct socket *so, struct ifnet *ifp) 426 { 427 428 panic("route_purgeif"); 429 430 return EOPNOTSUPP; 431 } 432 433 #ifdef INET 434 static int 435 route_get_sdl_index(struct rt_addrinfo *info, int *sdl_index) 436 { 437 struct rtentry *nrt; 438 int error; 439 440 error = rtrequest1(RTM_GET, info, &nrt); 441 if (error != 0) 442 return error; 443 /* 444 * nrt->rt_ifp->if_index may not be correct 445 * due to changing to ifplo0. 446 */ 447 *sdl_index = satosdl(nrt->rt_gateway)->sdl_index; 448 rtfree(nrt); 449 450 return 0; 451 } 452 #endif /* INET */ 453 454 static void 455 route_get_sdl(const struct ifnet *ifp, const struct sockaddr *dst, 456 struct sockaddr_dl *sdl, int *flags) 457 { 458 struct llentry *la; 459 460 KASSERT(ifp != NULL); 461 462 IF_AFDATA_RLOCK(ifp); 463 switch (dst->sa_family) { 464 case AF_INET: 465 la = lla_lookup(LLTABLE(ifp), 0, dst); 466 break; 467 case AF_INET6: 468 la = lla_lookup(LLTABLE6(ifp), 0, dst); 469 break; 470 default: 471 la = NULL; 472 KASSERTMSG(0, "Invalid AF=%d\n", dst->sa_family); 473 break; 474 } 475 IF_AFDATA_RUNLOCK(ifp); 476 477 void *a = (LLE_IS_VALID(la) && (la->la_flags & LLE_VALID) == LLE_VALID) 478 ? &la->ll_addr : NULL; 479 480 a = sockaddr_dl_init(sdl, sizeof(*sdl), ifp->if_index, ifp->if_type, 481 NULL, 0, a, ifp->if_addrlen); 482 KASSERT(a != NULL); 483 484 if (la != NULL) { 485 *flags = la->la_flags; 486 LLE_RUNLOCK(la); 487 } 488 } 489 490 static int 491 route_output_report(struct rtentry *rt, struct rt_addrinfo *info, 492 struct rt_xmsghdr *rtm, struct rt_xmsghdr **new_rtm) 493 { 494 int len; 495 struct ifnet *ifp; 496 497 if ((rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) == 0) 498 ; 499 else if ((ifp = rt->rt_ifp) != NULL) { 500 const struct ifaddr *rtifa; 501 info->rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 502 /* rtifa used to be simply rt->rt_ifa. 503 * If rt->rt_ifa != NULL, then 504 * rt_get_ifa() != NULL. So this 505 * ought to still be safe. --dyoung 506 */ 507 rtifa = rt_get_ifa(rt); 508 info->rti_info[RTAX_IFA] = rtifa->ifa_addr; 509 #ifdef RTSOCK_DEBUG 510 if (info->rti_info[RTAX_IFA]->sa_family == AF_INET) { 511 char ibuf[INET_ADDRSTRLEN]; 512 char abuf[INET_ADDRSTRLEN]; 513 printf("%s: copying out RTAX_IFA %s " 514 "for info->rti_info[RTAX_DST] %s " 515 "ifa_getifa %p ifa_seqno %p\n", 516 __func__, 517 RT_IN_PRINT(info, ibuf, RTAX_IFA), 518 RT_IN_PRINT(info, abuf, RTAX_DST), 519 (void *)rtifa->ifa_getifa, 520 rtifa->ifa_seqno); 521 } 522 #endif /* RTSOCK_DEBUG */ 523 if (ifp->if_flags & IFF_POINTOPOINT) 524 info->rti_info[RTAX_BRD] = rtifa->ifa_dstaddr; 525 else 526 info->rti_info[RTAX_BRD] = NULL; 527 rtm->rtm_index = ifp->if_index; 528 } else { 529 info->rti_info[RTAX_IFP] = NULL; 530 info->rti_info[RTAX_IFA] = NULL; 531 } 532 (void)rt_msg2(rtm->rtm_type, info, NULL, NULL, &len); 533 if (len > rtm->rtm_msglen) { 534 struct rt_xmsghdr *old_rtm = rtm; 535 R_Malloc(*new_rtm, struct rt_xmsghdr *, len); 536 if (*new_rtm == NULL) 537 return ENOBUFS; 538 (void)memcpy(*new_rtm, old_rtm, old_rtm->rtm_msglen); 539 rtm = *new_rtm; 540 } 541 (void)rt_msg2(rtm->rtm_type, info, rtm, NULL, 0); 542 rtm->rtm_flags = rt->rt_flags; 543 rtm_setmetrics(rt, rtm); 544 rtm->rtm_addrs = info->rti_addrs; 545 546 return 0; 547 } 548 549 static struct ifaddr * 550 route_output_get_ifa(const struct rt_addrinfo info, const struct rtentry *rt, 551 struct ifnet **ifp, struct psref *psref) 552 { 553 struct ifaddr *ifa = NULL; 554 555 *ifp = NULL; 556 if (info.rti_info[RTAX_IFP] != NULL) { 557 ifa = ifa_ifwithnet_psref(info.rti_info[RTAX_IFP], psref); 558 if (ifa == NULL) 559 goto next; 560 *ifp = ifa->ifa_ifp; 561 if (info.rti_info[RTAX_IFA] == NULL && 562 info.rti_info[RTAX_GATEWAY] == NULL) 563 goto next; 564 if (info.rti_info[RTAX_IFA] == NULL) { 565 /* route change <dst> <gw> -ifp <if> */ 566 ifa = ifaof_ifpforaddr_psref(info.rti_info[RTAX_GATEWAY], 567 *ifp, psref); 568 } else { 569 /* route change <dst> -ifp <if> -ifa <addr> */ 570 ifa = ifa_ifwithaddr_psref(info.rti_info[RTAX_IFA], psref); 571 if (ifa != NULL) 572 goto out; 573 ifa = ifaof_ifpforaddr_psref(info.rti_info[RTAX_IFA], 574 *ifp, psref); 575 } 576 goto out; 577 } 578 next: 579 if (info.rti_info[RTAX_IFA] != NULL) { 580 /* route change <dst> <gw> -ifa <addr> */ 581 ifa = ifa_ifwithaddr_psref(info.rti_info[RTAX_IFA], psref); 582 if (ifa != NULL) 583 goto out; 584 } 585 if (info.rti_info[RTAX_GATEWAY] != NULL) { 586 /* route change <dst> <gw> */ 587 ifa = ifa_ifwithroute_psref(rt->rt_flags, rt_getkey(rt), 588 info.rti_info[RTAX_GATEWAY], psref); 589 } 590 out: 591 if (ifa != NULL && *ifp == NULL) 592 *ifp = ifa->ifa_ifp; 593 return ifa; 594 } 595 596 static int 597 route_output_change(struct rtentry *rt, struct rt_addrinfo *info, 598 struct rt_xmsghdr *rtm) 599 { 600 int error = 0; 601 struct ifnet *ifp, *new_ifp; 602 struct ifaddr *ifa, *new_ifa; 603 struct psref psref_ifa, psref_new_ifa, psref_ifp; 604 605 /* 606 * new gateway could require new ifaddr, ifp; 607 * flags may also be different; ifp may be specified 608 * by ll sockaddr when protocol address is ambiguous 609 */ 610 ifp = rt_getifp(info, &psref_ifp); 611 ifa = rt_getifa(info, &psref_ifa); 612 if (ifa == NULL) { 613 error = ENETUNREACH; 614 goto out; 615 } 616 if (info->rti_info[RTAX_GATEWAY]) { 617 error = rt_setgate(rt, info->rti_info[RTAX_GATEWAY]); 618 if (error != 0) 619 goto out; 620 } 621 if (info->rti_info[RTAX_TAG]) { 622 const struct sockaddr *tag; 623 tag = rt_settag(rt, info->rti_info[RTAX_TAG]); 624 if (tag == NULL) { 625 error = ENOBUFS; 626 goto out; 627 } 628 } 629 /* new gateway could require new ifaddr, ifp; 630 flags may also be different; ifp may be specified 631 by ll sockaddr when protocol address is ambiguous */ 632 new_ifa = route_output_get_ifa(*info, rt, &new_ifp, &psref_new_ifa); 633 if (new_ifa != NULL) { 634 ifa_release(ifa, &psref_ifa); 635 ifa = new_ifa; 636 } 637 if (ifa) { 638 struct ifaddr *oifa = rt->rt_ifa; 639 if (oifa != ifa) { 640 if (oifa && oifa->ifa_rtrequest) 641 oifa->ifa_rtrequest(RTM_DELETE, rt, info); 642 rt_replace_ifa(rt, ifa); 643 rt->rt_ifp = new_ifp; 644 } 645 if (new_ifa == NULL) 646 ifa_release(ifa, &psref_ifa); 647 } 648 ifa_release(new_ifa, &psref_new_ifa); 649 if (new_ifp && rt->rt_ifp != new_ifp) 650 rt->rt_ifp = new_ifp; 651 rt_setmetrics(rtm->rtm_inits, rtm, rt); 652 if (rt->rt_flags != info->rti_flags) 653 rt->rt_flags = (info->rti_flags & ~PRESERVED_RTF) 654 | (rt->rt_flags & PRESERVED_RTF); 655 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 656 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, info); 657 out: 658 if_put(ifp, &psref_ifp); 659 660 return error; 661 } 662 663 /*ARGSUSED*/ 664 int 665 COMPATNAME(route_output)(struct mbuf *m, struct socket *so) 666 { 667 struct sockproto proto = { .sp_family = PF_XROUTE, }; 668 struct rt_xmsghdr *rtm = NULL; 669 struct rt_xmsghdr *old_rtm = NULL, *new_rtm = NULL; 670 struct rtentry *rt = NULL; 671 struct rtentry *saved_nrt = NULL; 672 struct rt_addrinfo info; 673 int len, error = 0; 674 sa_family_t family; 675 struct sockaddr_dl sdl; 676 int bound = curlwp_bind(); 677 678 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0) 679 if (m == NULL || ((m->m_len < sizeof(int32_t)) && 680 (m = m_pullup(m, sizeof(int32_t))) == NULL)) { 681 error = ENOBUFS; 682 goto out; 683 } 684 if ((m->m_flags & M_PKTHDR) == 0) 685 panic("%s", __func__); 686 len = m->m_pkthdr.len; 687 if (len < sizeof(*rtm) || 688 len != mtod(m, struct rt_xmsghdr *)->rtm_msglen) { 689 info.rti_info[RTAX_DST] = NULL; 690 senderr(EINVAL); 691 } 692 R_Malloc(rtm, struct rt_xmsghdr *, len); 693 if (rtm == NULL) { 694 info.rti_info[RTAX_DST] = NULL; 695 senderr(ENOBUFS); 696 } 697 m_copydata(m, 0, len, rtm); 698 if (rtm->rtm_version != RTM_XVERSION) { 699 info.rti_info[RTAX_DST] = NULL; 700 senderr(EPROTONOSUPPORT); 701 } 702 rtm->rtm_pid = curproc->p_pid; 703 memset(&info, 0, sizeof(info)); 704 info.rti_addrs = rtm->rtm_addrs; 705 if (rt_xaddrs(rtm->rtm_type, (const char *)(rtm + 1), len + (char *)rtm, 706 &info)) { 707 senderr(EINVAL); 708 } 709 info.rti_flags = rtm->rtm_flags; 710 #ifdef RTSOCK_DEBUG 711 if (info.rti_info[RTAX_DST]->sa_family == AF_INET) { 712 char abuf[INET_ADDRSTRLEN]; 713 printf("%s: extracted info.rti_info[RTAX_DST] %s\n", __func__, 714 RT_IN_PRINT(&info, abuf, RTAX_DST)); 715 } 716 #endif /* RTSOCK_DEBUG */ 717 if (info.rti_info[RTAX_DST] == NULL || 718 (info.rti_info[RTAX_DST]->sa_family >= AF_MAX)) { 719 senderr(EINVAL); 720 } 721 if (info.rti_info[RTAX_GATEWAY] != NULL && 722 (info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) { 723 senderr(EINVAL); 724 } 725 726 /* 727 * Verify that the caller has the appropriate privilege; RTM_GET 728 * is the only operation the non-superuser is allowed. 729 */ 730 if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE, 731 0, rtm, NULL, NULL) != 0) 732 senderr(EACCES); 733 734 switch (rtm->rtm_type) { 735 736 case RTM_ADD: 737 if (info.rti_info[RTAX_GATEWAY] == NULL) { 738 senderr(EINVAL); 739 } 740 #ifdef INET 741 /* support for new ARP code with keeping backcompat */ 742 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) { 743 const struct sockaddr_dl *sdlp = 744 satocsdl(info.rti_info[RTAX_GATEWAY]); 745 746 /* Allow routing requests by interface index */ 747 if (sdlp->sdl_nlen == 0 && sdlp->sdl_alen == 0 748 && sdlp->sdl_slen == 0) 749 goto fallback; 750 /* 751 * Old arp binaries don't set the sdl_index 752 * so we have to complement it. 753 */ 754 int sdl_index = sdlp->sdl_index; 755 if (sdl_index == 0) { 756 error = route_get_sdl_index(&info, &sdl_index); 757 if (error != 0) 758 goto fallback; 759 } else if ( 760 info.rti_info[RTAX_DST]->sa_family == AF_INET) { 761 /* 762 * XXX workaround for SIN_PROXY case; proxy arp 763 * entry should be in an interface that has 764 * a network route including the destination, 765 * not a local (link) route that may not be a 766 * desired place, for example a tap. 767 */ 768 const struct sockaddr_inarp *sina = 769 (const struct sockaddr_inarp *) 770 info.rti_info[RTAX_DST]; 771 if (sina->sin_other & SIN_PROXY) { 772 error = route_get_sdl_index(&info, 773 &sdl_index); 774 if (error != 0) 775 goto fallback; 776 } 777 } 778 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags, 779 rtm->rtm_rmx.rmx_expire, &info, sdl_index); 780 break; 781 } 782 fallback: 783 #endif /* INET */ 784 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 785 if (error == 0) { 786 rt_setmetrics(rtm->rtm_inits, rtm, saved_nrt); 787 rtfree(saved_nrt); 788 } 789 break; 790 791 case RTM_DELETE: 792 #ifdef INET 793 /* support for new ARP code */ 794 if (info.rti_info[RTAX_GATEWAY] && 795 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 796 (rtm->rtm_flags & RTF_LLDATA) != 0) { 797 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags, 798 rtm->rtm_rmx.rmx_expire, &info, 0); 799 break; 800 } 801 #endif /* INET */ 802 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 803 if (error != 0) 804 break; 805 806 rt = saved_nrt; 807 info.rti_info[RTAX_DST] = rt_getkey(rt); 808 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 809 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 810 info.rti_info[RTAX_TAG] = rt_gettag(rt); 811 error = route_output_report(rt, &info, rtm, &new_rtm); 812 if (error) 813 senderr(error); 814 if (new_rtm != NULL) { 815 old_rtm = rtm; 816 rtm = new_rtm; 817 } 818 break; 819 820 case RTM_GET: 821 case RTM_CHANGE: 822 case RTM_LOCK: 823 /* XXX This will mask info.rti_info[RTAX_DST] with 824 * info.rti_info[RTAX_NETMASK] before 825 * searching. It did not used to do that. --dyoung 826 */ 827 rt = NULL; 828 error = rtrequest1(RTM_GET, &info, &rt); 829 if (error != 0) 830 senderr(error); 831 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 832 if (memcmp(info.rti_info[RTAX_DST], rt_getkey(rt), 833 info.rti_info[RTAX_DST]->sa_len) != 0) 834 senderr(ESRCH); 835 if (info.rti_info[RTAX_NETMASK] == NULL && 836 rt_mask(rt) != NULL) 837 senderr(ETOOMANYREFS); 838 } 839 840 /* 841 * XXX if arp/ndp requests an L2 entry, we have to obtain 842 * it from lltable while for the route command we have to 843 * return a route as it is. How to distinguish them? 844 * For newer arp/ndp, RTF_LLDATA flag set by arp/ndp 845 * indicates an L2 entry is requested. For old arp/ndp 846 * binaries, we check RTF_UP flag is NOT set; it works 847 * by the fact that arp/ndp don't set it while the route 848 * command sets it. 849 */ 850 if (((rtm->rtm_flags & RTF_LLDATA) != 0 || 851 (rtm->rtm_flags & RTF_UP) == 0) && 852 rtm->rtm_type == RTM_GET && 853 sockaddr_cmp(rt_getkey(rt), info.rti_info[RTAX_DST]) != 0) { 854 int ll_flags = 0; 855 route_get_sdl(rt->rt_ifp, info.rti_info[RTAX_DST], &sdl, 856 &ll_flags); 857 info.rti_info[RTAX_GATEWAY] = sstocsa(&sdl); 858 error = route_output_report(rt, &info, rtm, &new_rtm); 859 if (error) 860 senderr(error); 861 if (new_rtm != NULL) { 862 old_rtm = rtm; 863 rtm = new_rtm; 864 } 865 rtm->rtm_flags |= RTF_LLDATA; 866 rtm->rtm_flags |= (ll_flags & LLE_STATIC) ? RTF_STATIC : 0; 867 break; 868 } 869 870 switch (rtm->rtm_type) { 871 case RTM_GET: 872 info.rti_info[RTAX_DST] = rt_getkey(rt); 873 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 874 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 875 info.rti_info[RTAX_TAG] = rt_gettag(rt); 876 error = route_output_report(rt, &info, rtm, &new_rtm); 877 if (error) 878 senderr(error); 879 if (new_rtm != NULL) { 880 old_rtm = rtm; 881 rtm = new_rtm; 882 } 883 break; 884 885 case RTM_CHANGE: 886 error = route_output_change(rt, &info, rtm); 887 if (error != 0) 888 goto flush; 889 /*FALLTHROUGH*/ 890 case RTM_LOCK: 891 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 892 rt->rt_rmx.rmx_locks |= 893 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 894 break; 895 } 896 break; 897 898 default: 899 senderr(EOPNOTSUPP); 900 } 901 902 flush: 903 if (rtm) { 904 if (error) 905 rtm->rtm_errno = error; 906 else 907 rtm->rtm_flags |= RTF_DONE; 908 } 909 family = info.rti_info[RTAX_DST] ? info.rti_info[RTAX_DST]->sa_family : 910 0; 911 /* We cannot free old_rtm until we have stopped using the 912 * pointers in info, some of which may point to sockaddrs 913 * in old_rtm. 914 */ 915 if (old_rtm != NULL) 916 Free(old_rtm); 917 if (rt) 918 rtfree(rt); 919 { 920 struct rawcb *rp = NULL; 921 /* 922 * Check to see if we don't want our own messages. 923 */ 924 if ((so->so_options & SO_USELOOPBACK) == 0) { 925 if (COMPATNAME(route_info).ri_cb.any_count <= 1) { 926 if (rtm) 927 Free(rtm); 928 m_freem(m); 929 goto out; 930 } 931 /* There is another listener, so construct message */ 932 rp = sotorawcb(so); 933 } 934 if (rtm) { 935 m_copyback(m, 0, rtm->rtm_msglen, rtm); 936 if (m->m_pkthdr.len < rtm->rtm_msglen) { 937 m_freem(m); 938 m = NULL; 939 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 940 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 941 Free(rtm); 942 } 943 if (rp) 944 rp->rcb_proto.sp_family = 0; /* Avoid us */ 945 if (family) 946 proto.sp_protocol = family; 947 if (m) 948 raw_input(m, &proto, &COMPATNAME(route_info).ri_src, 949 &COMPATNAME(route_info).ri_dst); 950 if (rp) 951 rp->rcb_proto.sp_family = PF_XROUTE; 952 } 953 out: 954 curlwp_bindx(bound); 955 return error; 956 } 957 958 static void 959 rt_setmetrics(int which, const struct rt_xmsghdr *in, struct rtentry *out) 960 { 961 #define metric(f, e) if (which & (f)) out->rt_rmx.e = in->rtm_rmx.e; 962 metric(RTV_RPIPE, rmx_recvpipe); 963 metric(RTV_SPIPE, rmx_sendpipe); 964 metric(RTV_SSTHRESH, rmx_ssthresh); 965 metric(RTV_RTT, rmx_rtt); 966 metric(RTV_RTTVAR, rmx_rttvar); 967 metric(RTV_HOPCOUNT, rmx_hopcount); 968 metric(RTV_MTU, rmx_mtu); 969 #undef metric 970 if (which & RTV_EXPIRE) { 971 out->rt_rmx.rmx_expire = in->rtm_rmx.rmx_expire ? 972 time_wall_to_mono(in->rtm_rmx.rmx_expire) : 0; 973 } 974 } 975 976 static void 977 rtm_setmetrics(const struct rtentry *in, struct rt_xmsghdr *out) 978 { 979 #define metric(e) out->rtm_rmx.e = in->rt_rmx.e; 980 metric(rmx_recvpipe); 981 metric(rmx_sendpipe); 982 metric(rmx_ssthresh); 983 metric(rmx_rtt); 984 metric(rmx_rttvar); 985 metric(rmx_hopcount); 986 metric(rmx_mtu); 987 #undef metric 988 out->rtm_rmx.rmx_expire = in->rt_rmx.rmx_expire ? 989 time_mono_to_wall(in->rt_rmx.rmx_expire) : 0; 990 } 991 992 static int 993 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim, 994 struct rt_addrinfo *rtinfo) 995 { 996 const struct sockaddr *sa = NULL; /* Quell compiler warning */ 997 int i; 998 999 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 1000 if ((rtinfo->rti_addrs & (1 << i)) == 0) 1001 continue; 1002 rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp; 1003 RT_XADVANCE(cp, sa); 1004 } 1005 1006 /* 1007 * Check for extra addresses specified, except RTM_GET asking 1008 * for interface info. 1009 */ 1010 if (rtmtype == RTM_GET) { 1011 if (((rtinfo->rti_addrs & 1012 (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0U << i)) != 0) 1013 return 1; 1014 } else if ((rtinfo->rti_addrs & (~0U << i)) != 0) 1015 return 1; 1016 /* Check for bad data length. */ 1017 if (cp != cplim) { 1018 if (i == RTAX_NETMASK + 1 && sa != NULL && 1019 cp - RT_XROUNDUP(sa->sa_len) + sa->sa_len == cplim) 1020 /* 1021 * The last sockaddr was info.rti_info[RTAX_NETMASK]. 1022 * We accept this for now for the sake of old 1023 * binaries or third party softwares. 1024 */ 1025 ; 1026 else 1027 return 1; 1028 } 1029 return 0; 1030 } 1031 1032 static int 1033 rt_getlen(int type) 1034 { 1035 #ifndef COMPAT_RTSOCK 1036 CTASSERT(__alignof(struct ifa_msghdr) >= sizeof(uint64_t)); 1037 CTASSERT(__alignof(struct if_msghdr) >= sizeof(uint64_t)); 1038 CTASSERT(__alignof(struct if_announcemsghdr) >= sizeof(uint64_t)); 1039 CTASSERT(__alignof(struct rt_msghdr) >= sizeof(uint64_t)); 1040 #endif 1041 1042 switch (type) { 1043 case RTM_ODELADDR: 1044 case RTM_ONEWADDR: 1045 case RTM_OCHGADDR: 1046 #ifdef COMPAT_70 1047 return sizeof(struct ifa_msghdr70); 1048 #else 1049 #ifdef DIAGNOSTIC 1050 printf("RTM_ONEWADDR\n"); 1051 #endif 1052 return -1; 1053 #endif 1054 case RTM_DELADDR: 1055 case RTM_NEWADDR: 1056 case RTM_CHGADDR: 1057 return sizeof(struct ifa_xmsghdr); 1058 1059 case RTM_OOIFINFO: 1060 #ifdef COMPAT_14 1061 return sizeof(struct if_msghdr14); 1062 #else 1063 #ifdef DIAGNOSTIC 1064 printf("RTM_OOIFINFO\n"); 1065 #endif 1066 return -1; 1067 #endif 1068 case RTM_OIFINFO: 1069 #ifdef COMPAT_50 1070 return sizeof(struct if_msghdr50); 1071 #else 1072 #ifdef DIAGNOSTIC 1073 printf("RTM_OIFINFO\n"); 1074 #endif 1075 return -1; 1076 #endif 1077 1078 case RTM_IFINFO: 1079 return sizeof(struct if_xmsghdr); 1080 1081 case RTM_IFANNOUNCE: 1082 case RTM_IEEE80211: 1083 return sizeof(struct if_xannouncemsghdr); 1084 1085 default: 1086 return sizeof(struct rt_xmsghdr); 1087 } 1088 } 1089 1090 1091 struct mbuf * 1092 COMPATNAME(rt_msg1)(int type, struct rt_addrinfo *rtinfo, void *data, int datalen) 1093 { 1094 struct rt_xmsghdr *rtm; 1095 struct mbuf *m; 1096 int i; 1097 const struct sockaddr *sa; 1098 int len, dlen; 1099 1100 m = m_gethdr(M_DONTWAIT, MT_DATA); 1101 if (m == NULL) 1102 return m; 1103 MCLAIM(m, &COMPATNAME(routedomain).dom_mowner); 1104 1105 if ((len = rt_getlen(type)) == -1) 1106 goto out; 1107 if (len > MHLEN + MLEN) 1108 panic("%s: message too long", __func__); 1109 else if (len > MHLEN) { 1110 m->m_next = m_get(M_DONTWAIT, MT_DATA); 1111 if (m->m_next == NULL) 1112 goto out; 1113 MCLAIM(m->m_next, m->m_owner); 1114 m->m_pkthdr.len = len; 1115 m->m_len = MHLEN; 1116 m->m_next->m_len = len - MHLEN; 1117 } else { 1118 m->m_pkthdr.len = m->m_len = len; 1119 } 1120 m_reset_rcvif(m); 1121 m_copyback(m, 0, datalen, data); 1122 if (len > datalen) 1123 (void)memset(mtod(m, char *) + datalen, 0, len - datalen); 1124 rtm = mtod(m, struct rt_xmsghdr *); 1125 for (i = 0; i < RTAX_MAX; i++) { 1126 if ((sa = rtinfo->rti_info[i]) == NULL) 1127 continue; 1128 rtinfo->rti_addrs |= (1 << i); 1129 dlen = RT_XROUNDUP(sa->sa_len); 1130 m_copyback(m, len, sa->sa_len, sa); 1131 if (dlen != sa->sa_len) { 1132 /* 1133 * Up to 6 + 1 nul's since roundup is to 1134 * sizeof(uint64_t) (8 bytes) 1135 */ 1136 m_copyback(m, len + sa->sa_len, 1137 dlen - sa->sa_len, "\0\0\0\0\0\0"); 1138 } 1139 len += dlen; 1140 } 1141 if (m->m_pkthdr.len != len) 1142 goto out; 1143 rtm->rtm_msglen = len; 1144 rtm->rtm_version = RTM_XVERSION; 1145 rtm->rtm_type = type; 1146 return m; 1147 out: 1148 m_freem(m); 1149 return NULL; 1150 } 1151 1152 /* 1153 * rt_msg2 1154 * 1155 * fills 'cp' or 'w'.w_tmem with the routing socket message and 1156 * returns the length of the message in 'lenp'. 1157 * 1158 * if walkarg is 0, cp is expected to be 0 or a buffer large enough to hold 1159 * the message 1160 * otherwise walkarg's w_needed is updated and if the user buffer is 1161 * specified and w_needed indicates space exists the information is copied 1162 * into the temp space (w_tmem). w_tmem is [re]allocated if necessary, 1163 * if the allocation fails ENOBUFS is returned. 1164 */ 1165 static int 1166 rt_msg2(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w, 1167 int *lenp) 1168 { 1169 int i; 1170 int len, dlen, second_time = 0; 1171 char *cp0, *cp = cpv; 1172 1173 rtinfo->rti_addrs = 0; 1174 again: 1175 if ((len = rt_getlen(type)) == -1) 1176 return EINVAL; 1177 1178 if ((cp0 = cp) != NULL) 1179 cp += len; 1180 for (i = 0; i < RTAX_MAX; i++) { 1181 const struct sockaddr *sa; 1182 1183 if ((sa = rtinfo->rti_info[i]) == NULL) 1184 continue; 1185 rtinfo->rti_addrs |= (1 << i); 1186 dlen = RT_XROUNDUP(sa->sa_len); 1187 if (cp) { 1188 int diff = dlen - sa->sa_len; 1189 (void)memcpy(cp, sa, (size_t)sa->sa_len); 1190 cp += sa->sa_len; 1191 if (diff > 0) { 1192 (void)memset(cp, 0, (size_t)diff); 1193 cp += diff; 1194 } 1195 } 1196 len += dlen; 1197 } 1198 if (cp == NULL && w != NULL && !second_time) { 1199 struct rt_walkarg *rw = w; 1200 1201 rw->w_needed += len; 1202 if (rw->w_needed <= 0 && rw->w_where) { 1203 if (rw->w_tmemsize < len) { 1204 if (rw->w_tmem) 1205 free(rw->w_tmem, M_RTABLE); 1206 rw->w_tmem = malloc(len, M_RTABLE, M_NOWAIT); 1207 if (rw->w_tmem) 1208 rw->w_tmemsize = len; 1209 else 1210 rw->w_tmemsize = 0; 1211 } 1212 if (rw->w_tmem) { 1213 cp = rw->w_tmem; 1214 second_time = 1; 1215 goto again; 1216 } else { 1217 rw->w_tmemneeded = len; 1218 return ENOBUFS; 1219 } 1220 } 1221 } 1222 if (cp) { 1223 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)cp0; 1224 1225 rtm->rtm_version = RTM_XVERSION; 1226 rtm->rtm_type = type; 1227 rtm->rtm_msglen = len; 1228 } 1229 if (lenp) 1230 *lenp = len; 1231 return 0; 1232 } 1233 1234 #ifndef COMPAT_RTSOCK 1235 int 1236 rt_msg3(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w, 1237 int *lenp) 1238 { 1239 return rt_msg2(type, rtinfo, cpv, w, lenp); 1240 } 1241 #endif 1242 1243 /* 1244 * This routine is called to generate a message from the routing 1245 * socket indicating that a redirect has occurred, a routing lookup 1246 * has failed, or that a protocol has detected timeouts to a particular 1247 * destination. 1248 */ 1249 void 1250 COMPATNAME(rt_missmsg)(int type, const struct rt_addrinfo *rtinfo, int flags, 1251 int error) 1252 { 1253 struct rt_xmsghdr rtm; 1254 struct mbuf *m; 1255 const struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1256 struct rt_addrinfo info = *rtinfo; 1257 1258 COMPATCALL(rt_missmsg, (type, rtinfo, flags, error)); 1259 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1260 return; 1261 memset(&rtm, 0, sizeof(rtm)); 1262 rtm.rtm_pid = curproc->p_pid; 1263 rtm.rtm_flags = RTF_DONE | flags; 1264 rtm.rtm_errno = error; 1265 m = COMPATNAME(rt_msg1)(type, &info, &rtm, sizeof(rtm)); 1266 if (m == NULL) 1267 return; 1268 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs; 1269 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0); 1270 } 1271 1272 /* 1273 * This routine is called to generate a message from the routing 1274 * socket indicating that the status of a network interface has changed. 1275 */ 1276 void 1277 COMPATNAME(rt_ifmsg)(struct ifnet *ifp) 1278 { 1279 struct if_xmsghdr ifm; 1280 struct mbuf *m; 1281 struct rt_addrinfo info; 1282 1283 COMPATCALL(rt_ifmsg, (ifp)); 1284 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1285 return; 1286 (void)memset(&info, 0, sizeof(info)); 1287 (void)memset(&ifm, 0, sizeof(ifm)); 1288 ifm.ifm_index = ifp->if_index; 1289 ifm.ifm_flags = ifp->if_flags; 1290 ifm.ifm_data = ifp->if_data; 1291 ifm.ifm_addrs = 0; 1292 m = COMPATNAME(rt_msg1)(RTM_IFINFO, &info, &ifm, sizeof(ifm)); 1293 if (m == NULL) 1294 return; 1295 COMPATNAME(route_enqueue)(m, 0); 1296 #ifdef COMPAT_14 1297 compat_14_rt_oifmsg(ifp); 1298 #endif 1299 #ifdef COMPAT_50 1300 compat_50_rt_oifmsg(ifp); 1301 #endif 1302 } 1303 1304 #ifndef COMPAT_RTSOCK 1305 static int 1306 if_addrflags(struct ifaddr *ifa) 1307 { 1308 1309 switch (ifa->ifa_addr->sa_family) { 1310 #ifdef INET 1311 case AF_INET: 1312 return ((struct in_ifaddr *)ifa)->ia4_flags; 1313 #endif 1314 #ifdef INET6 1315 case AF_INET6: 1316 return ((struct in6_ifaddr *)ifa)->ia6_flags; 1317 #endif 1318 default: 1319 return 0; 1320 } 1321 } 1322 #endif 1323 1324 /* 1325 * This is called to generate messages from the routing socket 1326 * indicating a network interface has had addresses associated with it. 1327 * if we ever reverse the logic and replace messages TO the routing 1328 * socket indicate a request to configure interfaces, then it will 1329 * be unnecessary as the routing socket will automatically generate 1330 * copies of it. 1331 */ 1332 void 1333 COMPATNAME(rt_newaddrmsg)(int cmd, struct ifaddr *ifa, int error, 1334 struct rtentry *rt) 1335 { 1336 #define cmdpass(__cmd, __pass) (((__cmd) << 2) | (__pass)) 1337 struct rt_addrinfo info; 1338 const struct sockaddr *sa; 1339 int pass; 1340 struct mbuf *m; 1341 struct ifnet *ifp; 1342 struct rt_xmsghdr rtm; 1343 struct ifa_xmsghdr ifam; 1344 int ncmd; 1345 1346 KASSERT(ifa != NULL); 1347 KASSERT(ifa->ifa_addr != NULL); 1348 ifp = ifa->ifa_ifp; 1349 #ifdef SCTP 1350 if (cmd == RTM_ADD) { 1351 sctp_add_ip_address(ifa); 1352 } else if (cmd == RTM_DELETE) { 1353 sctp_delete_ip_address(ifa); 1354 } 1355 #endif 1356 1357 COMPATCALL(rt_newaddrmsg, (cmd, ifa, error, rt)); 1358 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1359 return; 1360 for (pass = 1; pass < 3; pass++) { 1361 memset(&info, 0, sizeof(info)); 1362 switch (cmdpass(cmd, pass)) { 1363 case cmdpass(RTM_ADD, 1): 1364 case cmdpass(RTM_CHANGE, 1): 1365 case cmdpass(RTM_DELETE, 2): 1366 case cmdpass(RTM_NEWADDR, 1): 1367 case cmdpass(RTM_DELADDR, 1): 1368 case cmdpass(RTM_CHGADDR, 1): 1369 switch (cmd) { 1370 case RTM_ADD: 1371 ncmd = RTM_XNEWADDR; 1372 break; 1373 case RTM_DELETE: 1374 ncmd = RTM_XDELADDR; 1375 break; 1376 case RTM_CHANGE: 1377 ncmd = RTM_XCHGADDR; 1378 break; 1379 case RTM_NEWADDR: 1380 ncmd = RTM_XNEWADDR; 1381 break; 1382 case RTM_DELADDR: 1383 ncmd = RTM_XDELADDR; 1384 break; 1385 case RTM_CHGADDR: 1386 ncmd = RTM_XCHGADDR; 1387 break; 1388 default: 1389 panic("%s: unknown command %d", __func__, cmd); 1390 } 1391 #ifdef COMPAT_70 1392 compat_70_rt_newaddrmsg1(ncmd, ifa); 1393 #endif 1394 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1395 KASSERT(ifp->if_dl != NULL); 1396 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 1397 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1398 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1399 memset(&ifam, 0, sizeof(ifam)); 1400 ifam.ifam_index = ifp->if_index; 1401 ifam.ifam_metric = ifa->ifa_metric; 1402 ifam.ifam_flags = ifa->ifa_flags; 1403 #ifndef COMPAT_RTSOCK 1404 ifam.ifam_pid = curproc->p_pid; 1405 ifam.ifam_addrflags = if_addrflags(ifa); 1406 #endif 1407 m = COMPATNAME(rt_msg1)(ncmd, &info, &ifam, sizeof(ifam)); 1408 if (m == NULL) 1409 continue; 1410 mtod(m, struct ifa_xmsghdr *)->ifam_addrs = 1411 info.rti_addrs; 1412 break; 1413 case cmdpass(RTM_ADD, 2): 1414 case cmdpass(RTM_CHANGE, 2): 1415 case cmdpass(RTM_DELETE, 1): 1416 if (rt == NULL) 1417 continue; 1418 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1419 info.rti_info[RTAX_DST] = sa = rt_getkey(rt); 1420 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1421 memset(&rtm, 0, sizeof(rtm)); 1422 rtm.rtm_pid = curproc->p_pid; 1423 rtm.rtm_index = ifp->if_index; 1424 rtm.rtm_flags |= rt->rt_flags; 1425 rtm.rtm_errno = error; 1426 m = COMPATNAME(rt_msg1)(cmd, &info, &rtm, sizeof(rtm)); 1427 if (m == NULL) 1428 continue; 1429 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs; 1430 break; 1431 default: 1432 continue; 1433 } 1434 #ifdef DIAGNOSTIC 1435 if (m == NULL) 1436 panic("%s: called with wrong command", __func__); 1437 #endif 1438 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0); 1439 } 1440 #undef cmdpass 1441 1442 } 1443 1444 static struct mbuf * 1445 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1446 struct rt_addrinfo *info) 1447 { 1448 struct if_xannouncemsghdr ifan; 1449 1450 memset(info, 0, sizeof(*info)); 1451 memset(&ifan, 0, sizeof(ifan)); 1452 ifan.ifan_index = ifp->if_index; 1453 strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name)); 1454 ifan.ifan_what = what; 1455 return COMPATNAME(rt_msg1)(type, info, &ifan, sizeof(ifan)); 1456 } 1457 1458 /* 1459 * This is called to generate routing socket messages indicating 1460 * network interface arrival and departure. 1461 */ 1462 void 1463 COMPATNAME(rt_ifannouncemsg)(struct ifnet *ifp, int what) 1464 { 1465 struct mbuf *m; 1466 struct rt_addrinfo info; 1467 1468 COMPATCALL(rt_ifannouncemsg, (ifp, what)); 1469 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1470 return; 1471 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1472 if (m == NULL) 1473 return; 1474 COMPATNAME(route_enqueue)(m, 0); 1475 } 1476 1477 /* 1478 * This is called to generate routing socket messages indicating 1479 * IEEE80211 wireless events. 1480 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1481 */ 1482 void 1483 COMPATNAME(rt_ieee80211msg)(struct ifnet *ifp, int what, void *data, 1484 size_t data_len) 1485 { 1486 struct mbuf *m; 1487 struct rt_addrinfo info; 1488 1489 COMPATCALL(rt_ieee80211msg, (ifp, what, data, data_len)); 1490 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1491 return; 1492 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1493 if (m == NULL) 1494 return; 1495 /* 1496 * Append the ieee80211 data. Try to stick it in the 1497 * mbuf containing the ifannounce msg; otherwise allocate 1498 * a new mbuf and append. 1499 * 1500 * NB: we assume m is a single mbuf. 1501 */ 1502 if (data_len > M_TRAILINGSPACE(m)) { 1503 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1504 if (n == NULL) { 1505 m_freem(m); 1506 return; 1507 } 1508 (void)memcpy(mtod(n, void *), data, data_len); 1509 n->m_len = data_len; 1510 m->m_next = n; 1511 } else if (data_len > 0) { 1512 (void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len); 1513 m->m_len += data_len; 1514 } 1515 if (m->m_flags & M_PKTHDR) 1516 m->m_pkthdr.len += data_len; 1517 mtod(m, struct if_xannouncemsghdr *)->ifan_msglen += data_len; 1518 COMPATNAME(route_enqueue)(m, 0); 1519 } 1520 1521 /* 1522 * This is used in dumping the kernel table via sysctl(). 1523 */ 1524 static int 1525 sysctl_dumpentry(struct rtentry *rt, void *v) 1526 { 1527 struct rt_walkarg *w = v; 1528 int error = 0, size; 1529 struct rt_addrinfo info; 1530 1531 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1532 return 0; 1533 memset(&info, 0, sizeof(info)); 1534 info.rti_info[RTAX_DST] = rt_getkey(rt); 1535 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1536 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1537 info.rti_info[RTAX_TAG] = rt_gettag(rt); 1538 if (rt->rt_ifp) { 1539 const struct ifaddr *rtifa; 1540 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_dl->ifa_addr; 1541 /* rtifa used to be simply rt->rt_ifa. If rt->rt_ifa != NULL, 1542 * then rt_get_ifa() != NULL. So this ought to still be safe. 1543 * --dyoung 1544 */ 1545 rtifa = rt_get_ifa(rt); 1546 info.rti_info[RTAX_IFA] = rtifa->ifa_addr; 1547 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1548 info.rti_info[RTAX_BRD] = rtifa->ifa_dstaddr; 1549 } 1550 if ((error = rt_msg2(RTM_GET, &info, 0, w, &size))) 1551 return error; 1552 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1553 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)w->w_tmem; 1554 1555 rtm->rtm_flags = rt->rt_flags; 1556 rtm->rtm_use = rt->rt_use; 1557 rtm_setmetrics(rt, rtm); 1558 KASSERT(rt->rt_ifp != NULL); 1559 rtm->rtm_index = rt->rt_ifp->if_index; 1560 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1561 rtm->rtm_addrs = info.rti_addrs; 1562 if ((error = copyout(rtm, w->w_where, size)) != 0) 1563 w->w_where = NULL; 1564 else 1565 w->w_where = (char *)w->w_where + size; 1566 } 1567 return error; 1568 } 1569 1570 static int 1571 sysctl_iflist_if(struct ifnet *ifp, struct rt_walkarg *w, 1572 struct rt_addrinfo *info, size_t len) 1573 { 1574 struct if_xmsghdr *ifm; 1575 int error; 1576 1577 ifm = (struct if_xmsghdr *)w->w_tmem; 1578 ifm->ifm_index = ifp->if_index; 1579 ifm->ifm_flags = ifp->if_flags; 1580 ifm->ifm_data = ifp->if_data; 1581 ifm->ifm_addrs = info->rti_addrs; 1582 if ((error = copyout(ifm, w->w_where, len)) == 0) 1583 w->w_where = (char *)w->w_where + len; 1584 return error; 1585 } 1586 1587 static int 1588 sysctl_iflist_addr(struct rt_walkarg *w, struct ifaddr *ifa, 1589 struct rt_addrinfo *info) 1590 { 1591 int len, error; 1592 1593 if ((error = rt_msg2(RTM_XNEWADDR, info, 0, w, &len))) 1594 return error; 1595 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1596 struct ifa_xmsghdr *ifam; 1597 1598 ifam = (struct ifa_xmsghdr *)w->w_tmem; 1599 ifam->ifam_index = ifa->ifa_ifp->if_index; 1600 ifam->ifam_flags = ifa->ifa_flags; 1601 ifam->ifam_metric = ifa->ifa_metric; 1602 ifam->ifam_addrs = info->rti_addrs; 1603 #ifndef COMPAT_RTSOCK 1604 ifam->ifam_pid = 0; 1605 ifam->ifam_addrflags = if_addrflags(ifa); 1606 #endif 1607 if ((error = copyout(w->w_tmem, w->w_where, len)) == 0) 1608 w->w_where = (char *)w->w_where + len; 1609 } 1610 return error; 1611 } 1612 1613 static int 1614 sysctl_iflist(int af, struct rt_walkarg *w, int type) 1615 { 1616 struct ifnet *ifp; 1617 struct ifaddr *ifa; 1618 struct rt_addrinfo info; 1619 int cmd, len, error = 0; 1620 int (*iflist_if)(struct ifnet *, struct rt_walkarg *, 1621 struct rt_addrinfo *, size_t); 1622 int (*iflist_addr)(struct rt_walkarg *, struct ifaddr *, 1623 struct rt_addrinfo *); 1624 int s; 1625 struct psref psref; 1626 int bound = curlwp_bind(); 1627 1628 switch (type) { 1629 case NET_RT_IFLIST: 1630 cmd = RTM_IFINFO; 1631 iflist_if = sysctl_iflist_if; 1632 iflist_addr = sysctl_iflist_addr; 1633 break; 1634 #ifdef COMPAT_14 1635 case NET_RT_OOOIFLIST: 1636 cmd = RTM_OOIFINFO; 1637 iflist_if = compat_14_iflist; 1638 iflist_addr = compat_70_iflist_addr; 1639 break; 1640 #endif 1641 #ifdef COMPAT_50 1642 case NET_RT_OOIFLIST: 1643 cmd = RTM_OIFINFO; 1644 iflist_if = compat_50_iflist; 1645 iflist_addr = compat_70_iflist_addr; 1646 break; 1647 #endif 1648 #ifdef COMPAT_70 1649 case NET_RT_OIFLIST: 1650 cmd = RTM_IFINFO; 1651 iflist_if = sysctl_iflist_if; 1652 iflist_addr = compat_70_iflist_addr; 1653 break; 1654 #endif 1655 default: 1656 #ifdef DIAGNOSTIC 1657 printf("sysctl_iflist\n"); 1658 #endif 1659 return EINVAL; 1660 } 1661 1662 memset(&info, 0, sizeof(info)); 1663 1664 s = pserialize_read_enter(); 1665 IFNET_READER_FOREACH(ifp) { 1666 if (w->w_arg && w->w_arg != ifp->if_index) 1667 continue; 1668 if (IFADDR_READER_EMPTY(ifp)) 1669 continue; 1670 1671 psref_acquire(&psref, &ifp->if_psref, ifnet_psref_class); 1672 pserialize_read_exit(s); 1673 1674 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 1675 if ((error = rt_msg2(cmd, &info, NULL, w, &len)) != 0) 1676 goto release_exit; 1677 info.rti_info[RTAX_IFP] = NULL; 1678 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1679 if ((error = iflist_if(ifp, w, &info, len)) != 0) 1680 goto release_exit; 1681 } 1682 IFADDR_READER_FOREACH(ifa, ifp) { 1683 if (af && af != ifa->ifa_addr->sa_family) 1684 continue; 1685 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1686 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1687 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1688 if ((error = iflist_addr(w, ifa, &info)) != 0) 1689 goto release_exit; 1690 } 1691 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1692 info.rti_info[RTAX_BRD] = NULL; 1693 1694 s = pserialize_read_enter(); 1695 psref_release(&psref, &ifp->if_psref, ifnet_psref_class); 1696 } 1697 pserialize_read_exit(s); 1698 curlwp_bindx(bound); 1699 1700 return 0; 1701 1702 release_exit: 1703 psref_release(&psref, &ifp->if_psref, ifnet_psref_class); 1704 curlwp_bindx(bound); 1705 return error; 1706 } 1707 1708 static int 1709 sysctl_rtable(SYSCTLFN_ARGS) 1710 { 1711 void *where = oldp; 1712 size_t *given = oldlenp; 1713 int i, s, error = EINVAL; 1714 u_char af; 1715 struct rt_walkarg w; 1716 1717 if (namelen == 1 && name[0] == CTL_QUERY) 1718 return sysctl_query(SYSCTLFN_CALL(rnode)); 1719 1720 if (newp) 1721 return EPERM; 1722 if (namelen != 3) 1723 return EINVAL; 1724 af = name[0]; 1725 w.w_tmemneeded = 0; 1726 w.w_tmemsize = 0; 1727 w.w_tmem = NULL; 1728 again: 1729 /* we may return here if a later [re]alloc of the t_mem buffer fails */ 1730 if (w.w_tmemneeded) { 1731 w.w_tmem = malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK); 1732 w.w_tmemsize = w.w_tmemneeded; 1733 w.w_tmemneeded = 0; 1734 } 1735 w.w_op = name[1]; 1736 w.w_arg = name[2]; 1737 w.w_given = *given; 1738 w.w_needed = 0 - w.w_given; 1739 w.w_where = where; 1740 1741 s = splsoftnet(); 1742 switch (w.w_op) { 1743 1744 case NET_RT_DUMP: 1745 case NET_RT_FLAGS: 1746 #ifdef INET 1747 /* 1748 * take care of llinfo entries, the caller must 1749 * specify an AF 1750 */ 1751 if (w.w_op == NET_RT_FLAGS && 1752 (w.w_arg == 0 || w.w_arg & RTF_LLDATA)) { 1753 if (af != 0) 1754 error = lltable_sysctl_dumparp(af, &w); 1755 else 1756 error = EINVAL; 1757 break; 1758 } 1759 #endif /* INET */ 1760 1761 for (i = 1; i <= AF_MAX; i++) 1762 if ((af == 0 || af == i) && 1763 (error = rt_walktree(i, sysctl_dumpentry, &w))) 1764 break; 1765 break; 1766 1767 #ifdef COMPAT_14 1768 case NET_RT_OOOIFLIST: 1769 error = sysctl_iflist(af, &w, w.w_op); 1770 break; 1771 #endif 1772 #ifdef COMPAT_50 1773 case NET_RT_OOIFLIST: 1774 error = sysctl_iflist(af, &w, w.w_op); 1775 break; 1776 #endif 1777 #ifdef COMPAT_70 1778 case NET_RT_OIFLIST: 1779 error = sysctl_iflist(af, &w, w.w_op); 1780 break; 1781 #endif 1782 case NET_RT_IFLIST: 1783 error = sysctl_iflist(af, &w, w.w_op); 1784 break; 1785 } 1786 splx(s); 1787 1788 /* check to see if we couldn't allocate memory with NOWAIT */ 1789 if (error == ENOBUFS && w.w_tmem == 0 && w.w_tmemneeded) 1790 goto again; 1791 1792 if (w.w_tmem) 1793 free(w.w_tmem, M_RTABLE); 1794 w.w_needed += w.w_given; 1795 if (where) { 1796 *given = (char *)w.w_where - (char *)where; 1797 if (*given < w.w_needed) 1798 return ENOMEM; 1799 } else { 1800 *given = (11 * w.w_needed) / 10; 1801 } 1802 return error; 1803 } 1804 1805 /* 1806 * Routing message software interrupt routine 1807 */ 1808 static void 1809 COMPATNAME(route_intr)(void *cookie) 1810 { 1811 struct sockproto proto = { .sp_family = PF_XROUTE, }; 1812 struct route_info * const ri = &COMPATNAME(route_info); 1813 struct mbuf *m; 1814 1815 mutex_enter(softnet_lock); 1816 KERNEL_LOCK(1, NULL); 1817 for (;;) { 1818 IFQ_LOCK(&ri->ri_intrq); 1819 IF_DEQUEUE(&ri->ri_intrq, m); 1820 IFQ_UNLOCK(&ri->ri_intrq); 1821 if (m == NULL) 1822 break; 1823 proto.sp_protocol = M_GETCTX(m, uintptr_t); 1824 raw_input(m, &proto, &ri->ri_src, &ri->ri_dst); 1825 } 1826 KERNEL_UNLOCK_ONE(NULL); 1827 mutex_exit(softnet_lock); 1828 } 1829 1830 /* 1831 * Enqueue a message to the software interrupt routine. 1832 */ 1833 void 1834 COMPATNAME(route_enqueue)(struct mbuf *m, int family) 1835 { 1836 struct route_info * const ri = &COMPATNAME(route_info); 1837 int wasempty; 1838 1839 IFQ_LOCK(&ri->ri_intrq); 1840 if (IF_QFULL(&ri->ri_intrq)) { 1841 IF_DROP(&ri->ri_intrq); 1842 IFQ_UNLOCK(&ri->ri_intrq); 1843 m_freem(m); 1844 } else { 1845 wasempty = IF_IS_EMPTY(&ri->ri_intrq); 1846 M_SETCTX(m, (uintptr_t)family); 1847 IF_ENQUEUE(&ri->ri_intrq, m); 1848 IFQ_UNLOCK(&ri->ri_intrq); 1849 if (wasempty) { 1850 kpreempt_disable(); 1851 softint_schedule(ri->ri_sih); 1852 kpreempt_enable(); 1853 } 1854 } 1855 } 1856 1857 static void 1858 COMPATNAME(route_init)(void) 1859 { 1860 struct route_info * const ri = &COMPATNAME(route_info); 1861 1862 #ifndef COMPAT_RTSOCK 1863 rt_init(); 1864 #endif 1865 1866 sysctl_net_route_setup(NULL); 1867 ri->ri_intrq.ifq_maxlen = ri->ri_maxqlen; 1868 ri->ri_sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1869 COMPATNAME(route_intr), NULL); 1870 IFQ_LOCK_INIT(&ri->ri_intrq); 1871 } 1872 1873 /* 1874 * Definitions of protocols supported in the ROUTE domain. 1875 */ 1876 #ifndef COMPAT_RTSOCK 1877 PR_WRAP_USRREQS(route); 1878 #else 1879 PR_WRAP_USRREQS(compat_50_route); 1880 #endif 1881 1882 static const struct pr_usrreqs route_usrreqs = { 1883 .pr_attach = COMPATNAME(route_attach_wrapper), 1884 .pr_detach = COMPATNAME(route_detach_wrapper), 1885 .pr_accept = COMPATNAME(route_accept_wrapper), 1886 .pr_bind = COMPATNAME(route_bind_wrapper), 1887 .pr_listen = COMPATNAME(route_listen_wrapper), 1888 .pr_connect = COMPATNAME(route_connect_wrapper), 1889 .pr_connect2 = COMPATNAME(route_connect2_wrapper), 1890 .pr_disconnect = COMPATNAME(route_disconnect_wrapper), 1891 .pr_shutdown = COMPATNAME(route_shutdown_wrapper), 1892 .pr_abort = COMPATNAME(route_abort_wrapper), 1893 .pr_ioctl = COMPATNAME(route_ioctl_wrapper), 1894 .pr_stat = COMPATNAME(route_stat_wrapper), 1895 .pr_peeraddr = COMPATNAME(route_peeraddr_wrapper), 1896 .pr_sockaddr = COMPATNAME(route_sockaddr_wrapper), 1897 .pr_rcvd = COMPATNAME(route_rcvd_wrapper), 1898 .pr_recvoob = COMPATNAME(route_recvoob_wrapper), 1899 .pr_send = COMPATNAME(route_send_wrapper), 1900 .pr_sendoob = COMPATNAME(route_sendoob_wrapper), 1901 .pr_purgeif = COMPATNAME(route_purgeif_wrapper), 1902 }; 1903 1904 static const struct protosw COMPATNAME(route_protosw)[] = { 1905 { 1906 .pr_type = SOCK_RAW, 1907 .pr_domain = &COMPATNAME(routedomain), 1908 .pr_flags = PR_ATOMIC|PR_ADDR, 1909 .pr_input = raw_input, 1910 .pr_ctlinput = raw_ctlinput, 1911 .pr_usrreqs = &route_usrreqs, 1912 .pr_init = raw_init, 1913 }, 1914 }; 1915 1916 struct domain COMPATNAME(routedomain) = { 1917 .dom_family = PF_XROUTE, 1918 .dom_name = DOMAINNAME, 1919 .dom_init = COMPATNAME(route_init), 1920 .dom_protosw = COMPATNAME(route_protosw), 1921 .dom_protoswNPROTOSW = 1922 &COMPATNAME(route_protosw)[__arraycount(COMPATNAME(route_protosw))], 1923 }; 1924 1925 static void 1926 sysctl_net_route_setup(struct sysctllog **clog) 1927 { 1928 const struct sysctlnode *rnode = NULL; 1929 1930 sysctl_createv(clog, 0, NULL, &rnode, 1931 CTLFLAG_PERMANENT, 1932 CTLTYPE_NODE, DOMAINNAME, 1933 SYSCTL_DESCR("PF_ROUTE information"), 1934 NULL, 0, NULL, 0, 1935 CTL_NET, PF_XROUTE, CTL_EOL); 1936 1937 sysctl_createv(clog, 0, NULL, NULL, 1938 CTLFLAG_PERMANENT, 1939 CTLTYPE_NODE, "rtable", 1940 SYSCTL_DESCR("Routing table information"), 1941 sysctl_rtable, 0, NULL, 0, 1942 CTL_NET, PF_XROUTE, 0 /* any protocol */, CTL_EOL); 1943 1944 sysctl_createv(clog, 0, &rnode, NULL, 1945 CTLFLAG_PERMANENT, 1946 CTLTYPE_STRUCT, "stats", 1947 SYSCTL_DESCR("Routing statistics"), 1948 NULL, 0, &rtstat, sizeof(rtstat), 1949 CTL_CREATE, CTL_EOL); 1950 } 1951
Indexes created Fri Oct 03 02:09:57 GMT 2025