1 /* $NetBSD: rtsock.c,v 1.197 2016/10/03 11:06:06 ozaki-r 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 1.197 2016/10/03 11:06:06 ozaki-r 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 /*ARGSUSED*/ 597 int 598 COMPATNAME(route_output)(struct mbuf *m, struct socket *so) 599 { 600 struct sockproto proto = { .sp_family = PF_XROUTE, }; 601 struct rt_xmsghdr *rtm = NULL; 602 struct rt_xmsghdr *old_rtm = NULL, *new_rtm = NULL; 603 struct rtentry *rt = NULL; 604 struct rtentry *saved_nrt = NULL; 605 struct rt_addrinfo info; 606 int len, error = 0; 607 struct ifnet *ifp = NULL; 608 struct ifaddr *ifa = NULL; 609 sa_family_t family; 610 struct sockaddr_dl sdl; 611 struct psref psref; 612 int bound = curlwp_bind(); 613 614 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0) 615 if (m == NULL || ((m->m_len < sizeof(int32_t)) && 616 (m = m_pullup(m, sizeof(int32_t))) == NULL)) { 617 error = ENOBUFS; 618 goto out; 619 } 620 if ((m->m_flags & M_PKTHDR) == 0) 621 panic("%s", __func__); 622 len = m->m_pkthdr.len; 623 if (len < sizeof(*rtm) || 624 len != mtod(m, struct rt_xmsghdr *)->rtm_msglen) { 625 info.rti_info[RTAX_DST] = NULL; 626 senderr(EINVAL); 627 } 628 R_Malloc(rtm, struct rt_xmsghdr *, len); 629 if (rtm == NULL) { 630 info.rti_info[RTAX_DST] = NULL; 631 senderr(ENOBUFS); 632 } 633 m_copydata(m, 0, len, rtm); 634 if (rtm->rtm_version != RTM_XVERSION) { 635 info.rti_info[RTAX_DST] = NULL; 636 senderr(EPROTONOSUPPORT); 637 } 638 rtm->rtm_pid = curproc->p_pid; 639 memset(&info, 0, sizeof(info)); 640 info.rti_addrs = rtm->rtm_addrs; 641 if (rt_xaddrs(rtm->rtm_type, (const char *)(rtm + 1), len + (char *)rtm, 642 &info)) { 643 senderr(EINVAL); 644 } 645 info.rti_flags = rtm->rtm_flags; 646 #ifdef RTSOCK_DEBUG 647 if (info.rti_info[RTAX_DST]->sa_family == AF_INET) { 648 char abuf[INET_ADDRSTRLEN]; 649 printf("%s: extracted info.rti_info[RTAX_DST] %s\n", __func__, 650 RT_IN_PRINT(&info, abuf, RTAX_DST)); 651 } 652 #endif /* RTSOCK_DEBUG */ 653 if (info.rti_info[RTAX_DST] == NULL || 654 (info.rti_info[RTAX_DST]->sa_family >= AF_MAX)) { 655 senderr(EINVAL); 656 } 657 if (info.rti_info[RTAX_GATEWAY] != NULL && 658 (info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) { 659 senderr(EINVAL); 660 } 661 662 /* 663 * Verify that the caller has the appropriate privilege; RTM_GET 664 * is the only operation the non-superuser is allowed. 665 */ 666 if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE, 667 0, rtm, NULL, NULL) != 0) 668 senderr(EACCES); 669 670 switch (rtm->rtm_type) { 671 672 case RTM_ADD: 673 if (info.rti_info[RTAX_GATEWAY] == NULL) { 674 senderr(EINVAL); 675 } 676 #ifdef INET 677 /* support for new ARP code with keeping backcompat */ 678 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) { 679 const struct sockaddr_dl *sdlp = 680 satocsdl(info.rti_info[RTAX_GATEWAY]); 681 682 /* Allow routing requests by interface index */ 683 if (sdlp->sdl_nlen == 0 && sdlp->sdl_alen == 0 684 && sdlp->sdl_slen == 0) 685 goto fallback; 686 /* 687 * Old arp binaries don't set the sdl_index 688 * so we have to complement it. 689 */ 690 int sdl_index = sdlp->sdl_index; 691 if (sdl_index == 0) { 692 error = route_get_sdl_index(&info, &sdl_index); 693 if (error != 0) 694 goto fallback; 695 } else if ( 696 info.rti_info[RTAX_DST]->sa_family == AF_INET) { 697 /* 698 * XXX workaround for SIN_PROXY case; proxy arp 699 * entry should be in an interface that has 700 * a network route including the destination, 701 * not a local (link) route that may not be a 702 * desired place, for example a tap. 703 */ 704 const struct sockaddr_inarp *sina = 705 (const struct sockaddr_inarp *) 706 info.rti_info[RTAX_DST]; 707 if (sina->sin_other & SIN_PROXY) { 708 error = route_get_sdl_index(&info, 709 &sdl_index); 710 if (error != 0) 711 goto fallback; 712 } 713 } 714 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags, 715 rtm->rtm_rmx.rmx_expire, &info, sdl_index); 716 break; 717 } 718 fallback: 719 #endif /* INET */ 720 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 721 if (error == 0) { 722 rt_setmetrics(rtm->rtm_inits, rtm, saved_nrt); 723 rtfree(saved_nrt); 724 } 725 break; 726 727 case RTM_DELETE: 728 #ifdef INET 729 /* support for new ARP code */ 730 if (info.rti_info[RTAX_GATEWAY] && 731 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 732 (rtm->rtm_flags & RTF_LLDATA) != 0) { 733 error = lla_rt_output(rtm->rtm_type, rtm->rtm_flags, 734 rtm->rtm_rmx.rmx_expire, &info, 0); 735 break; 736 } 737 #endif /* INET */ 738 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 739 if (error != 0) 740 break; 741 742 rt = saved_nrt; 743 info.rti_info[RTAX_DST] = rt_getkey(rt); 744 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 745 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 746 info.rti_info[RTAX_TAG] = rt_gettag(rt); 747 error = route_output_report(rt, &info, rtm, &new_rtm); 748 if (error) 749 senderr(error); 750 if (new_rtm != NULL) { 751 old_rtm = rtm; 752 rtm = new_rtm; 753 } 754 break; 755 756 case RTM_GET: 757 case RTM_CHANGE: 758 case RTM_LOCK: 759 /* XXX This will mask info.rti_info[RTAX_DST] with 760 * info.rti_info[RTAX_NETMASK] before 761 * searching. It did not used to do that. --dyoung 762 */ 763 rt = NULL; 764 error = rtrequest1(RTM_GET, &info, &rt); 765 if (error != 0) 766 senderr(error); 767 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 768 if (memcmp(info.rti_info[RTAX_DST], rt_getkey(rt), 769 info.rti_info[RTAX_DST]->sa_len) != 0) 770 senderr(ESRCH); 771 if (info.rti_info[RTAX_NETMASK] == NULL && 772 rt_mask(rt) != NULL) 773 senderr(ETOOMANYREFS); 774 } 775 776 /* 777 * XXX if arp/ndp requests an L2 entry, we have to obtain 778 * it from lltable while for the route command we have to 779 * return a route as it is. How to distinguish them? 780 * For newer arp/ndp, RTF_LLDATA flag set by arp/ndp 781 * indicates an L2 entry is requested. For old arp/ndp 782 * binaries, we check RTF_UP flag is NOT set; it works 783 * by the fact that arp/ndp don't set it while the route 784 * command sets it. 785 */ 786 if (((rtm->rtm_flags & RTF_LLDATA) != 0 || 787 (rtm->rtm_flags & RTF_UP) == 0) && 788 rtm->rtm_type == RTM_GET && 789 sockaddr_cmp(rt_getkey(rt), info.rti_info[RTAX_DST]) != 0) { 790 int ll_flags = 0; 791 route_get_sdl(rt->rt_ifp, info.rti_info[RTAX_DST], &sdl, 792 &ll_flags); 793 info.rti_info[RTAX_GATEWAY] = sstocsa(&sdl); 794 error = route_output_report(rt, &info, rtm, &new_rtm); 795 if (error) 796 senderr(error); 797 if (new_rtm != NULL) { 798 old_rtm = rtm; 799 rtm = new_rtm; 800 } 801 rtm->rtm_flags |= RTF_LLDATA; 802 rtm->rtm_flags |= (ll_flags & LLE_STATIC) ? RTF_STATIC : 0; 803 break; 804 } 805 806 switch (rtm->rtm_type) { 807 case RTM_GET: 808 info.rti_info[RTAX_DST] = rt_getkey(rt); 809 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 810 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 811 info.rti_info[RTAX_TAG] = rt_gettag(rt); 812 error = route_output_report(rt, &info, rtm, &new_rtm); 813 if (error) 814 senderr(error); 815 if (new_rtm != NULL) { 816 old_rtm = rtm; 817 rtm = new_rtm; 818 } 819 break; 820 821 case RTM_CHANGE: { 822 struct ifnet *_ifp; 823 struct ifaddr *_ifa; 824 struct psref _psref, psref_ifp; 825 /* 826 * new gateway could require new ifaddr, ifp; 827 * flags may also be different; ifp may be specified 828 * by ll sockaddr when protocol address is ambiguous 829 */ 830 _ifp = rt_getifp(&info, &psref_ifp); 831 ifa = rt_getifa(&info, &psref); 832 if (ifa == NULL) { 833 if_put(_ifp, &psref_ifp); 834 senderr(ENETUNREACH); 835 } 836 if (info.rti_info[RTAX_GATEWAY]) { 837 error = rt_setgate(rt, 838 info.rti_info[RTAX_GATEWAY]); 839 if (error != 0) { 840 if_put(_ifp, &psref_ifp); 841 senderr(error); 842 } 843 } 844 if (info.rti_info[RTAX_TAG]) { 845 const struct sockaddr *tag; 846 tag = rt_settag(rt, info.rti_info[RTAX_TAG]); 847 if (tag == NULL) { 848 if_put(_ifp, &psref_ifp); 849 senderr(ENOBUFS); 850 } 851 } 852 /* new gateway could require new ifaddr, ifp; 853 flags may also be different; ifp may be specified 854 by ll sockaddr when protocol address is ambiguous */ 855 _ifa = route_output_get_ifa(info, rt, &ifp, &_psref); 856 if (_ifa != NULL) { 857 ifa_release(ifa, &psref); 858 ifa = _ifa; 859 } 860 if (ifa) { 861 struct ifaddr *oifa = rt->rt_ifa; 862 if (oifa != ifa) { 863 if (oifa && oifa->ifa_rtrequest) { 864 oifa->ifa_rtrequest(RTM_DELETE, 865 rt, &info); 866 } 867 rt_replace_ifa(rt, ifa); 868 rt->rt_ifp = ifp; 869 } 870 if (_ifa == NULL) 871 ifa_release(ifa, &psref); 872 } 873 ifa_release(_ifa, &_psref); 874 if (ifp && rt->rt_ifp != ifp) 875 rt->rt_ifp = ifp; 876 rt_setmetrics(rtm->rtm_inits, rtm, rt); 877 if (rt->rt_flags != info.rti_flags) 878 rt->rt_flags = (info.rti_flags & ~PRESERVED_RTF) 879 | (rt->rt_flags & PRESERVED_RTF); 880 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 881 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 882 if_put(_ifp, &psref_ifp); 883 /*FALLTHROUGH*/ 884 } 885 case RTM_LOCK: 886 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 887 rt->rt_rmx.rmx_locks |= 888 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 889 break; 890 } 891 break; 892 893 default: 894 senderr(EOPNOTSUPP); 895 } 896 897 flush: 898 if (rtm) { 899 if (error) 900 rtm->rtm_errno = error; 901 else 902 rtm->rtm_flags |= RTF_DONE; 903 } 904 family = info.rti_info[RTAX_DST] ? info.rti_info[RTAX_DST]->sa_family : 905 0; 906 /* We cannot free old_rtm until we have stopped using the 907 * pointers in info, some of which may point to sockaddrs 908 * in old_rtm. 909 */ 910 if (old_rtm != NULL) 911 Free(old_rtm); 912 if (rt) 913 rtfree(rt); 914 { 915 struct rawcb *rp = NULL; 916 /* 917 * Check to see if we don't want our own messages. 918 */ 919 if ((so->so_options & SO_USELOOPBACK) == 0) { 920 if (COMPATNAME(route_info).ri_cb.any_count <= 1) { 921 if (rtm) 922 Free(rtm); 923 m_freem(m); 924 goto out; 925 } 926 /* There is another listener, so construct message */ 927 rp = sotorawcb(so); 928 } 929 if (rtm) { 930 m_copyback(m, 0, rtm->rtm_msglen, rtm); 931 if (m->m_pkthdr.len < rtm->rtm_msglen) { 932 m_freem(m); 933 m = NULL; 934 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 935 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 936 Free(rtm); 937 } 938 if (rp) 939 rp->rcb_proto.sp_family = 0; /* Avoid us */ 940 if (family) 941 proto.sp_protocol = family; 942 if (m) 943 raw_input(m, &proto, &COMPATNAME(route_info).ri_src, 944 &COMPATNAME(route_info).ri_dst); 945 if (rp) 946 rp->rcb_proto.sp_family = PF_XROUTE; 947 } 948 out: 949 curlwp_bindx(bound); 950 return error; 951 } 952 953 static void 954 rt_setmetrics(int which, const struct rt_xmsghdr *in, struct rtentry *out) 955 { 956 #define metric(f, e) if (which & (f)) out->rt_rmx.e = in->rtm_rmx.e; 957 metric(RTV_RPIPE, rmx_recvpipe); 958 metric(RTV_SPIPE, rmx_sendpipe); 959 metric(RTV_SSTHRESH, rmx_ssthresh); 960 metric(RTV_RTT, rmx_rtt); 961 metric(RTV_RTTVAR, rmx_rttvar); 962 metric(RTV_HOPCOUNT, rmx_hopcount); 963 metric(RTV_MTU, rmx_mtu); 964 #undef metric 965 if (which & RTV_EXPIRE) { 966 out->rt_rmx.rmx_expire = in->rtm_rmx.rmx_expire ? 967 time_wall_to_mono(in->rtm_rmx.rmx_expire) : 0; 968 } 969 } 970 971 static void 972 rtm_setmetrics(const struct rtentry *in, struct rt_xmsghdr *out) 973 { 974 #define metric(e) out->rtm_rmx.e = in->rt_rmx.e; 975 metric(rmx_recvpipe); 976 metric(rmx_sendpipe); 977 metric(rmx_ssthresh); 978 metric(rmx_rtt); 979 metric(rmx_rttvar); 980 metric(rmx_hopcount); 981 metric(rmx_mtu); 982 #undef metric 983 out->rtm_rmx.rmx_expire = in->rt_rmx.rmx_expire ? 984 time_mono_to_wall(in->rt_rmx.rmx_expire) : 0; 985 } 986 987 static int 988 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim, 989 struct rt_addrinfo *rtinfo) 990 { 991 const struct sockaddr *sa = NULL; /* Quell compiler warning */ 992 int i; 993 994 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 995 if ((rtinfo->rti_addrs & (1 << i)) == 0) 996 continue; 997 rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp; 998 RT_XADVANCE(cp, sa); 999 } 1000 1001 /* 1002 * Check for extra addresses specified, except RTM_GET asking 1003 * for interface info. 1004 */ 1005 if (rtmtype == RTM_GET) { 1006 if (((rtinfo->rti_addrs & 1007 (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0U << i)) != 0) 1008 return 1; 1009 } else if ((rtinfo->rti_addrs & (~0U << i)) != 0) 1010 return 1; 1011 /* Check for bad data length. */ 1012 if (cp != cplim) { 1013 if (i == RTAX_NETMASK + 1 && sa != NULL && 1014 cp - RT_XROUNDUP(sa->sa_len) + sa->sa_len == cplim) 1015 /* 1016 * The last sockaddr was info.rti_info[RTAX_NETMASK]. 1017 * We accept this for now for the sake of old 1018 * binaries or third party softwares. 1019 */ 1020 ; 1021 else 1022 return 1; 1023 } 1024 return 0; 1025 } 1026 1027 static int 1028 rt_getlen(int type) 1029 { 1030 #ifndef COMPAT_RTSOCK 1031 CTASSERT(__alignof(struct ifa_msghdr) >= sizeof(uint64_t)); 1032 CTASSERT(__alignof(struct if_msghdr) >= sizeof(uint64_t)); 1033 CTASSERT(__alignof(struct if_announcemsghdr) >= sizeof(uint64_t)); 1034 CTASSERT(__alignof(struct rt_msghdr) >= sizeof(uint64_t)); 1035 #endif 1036 1037 switch (type) { 1038 case RTM_ODELADDR: 1039 case RTM_ONEWADDR: 1040 case RTM_OCHGADDR: 1041 #ifdef COMPAT_70 1042 return sizeof(struct ifa_msghdr70); 1043 #else 1044 #ifdef DIAGNOSTIC 1045 printf("RTM_ONEWADDR\n"); 1046 #endif 1047 return -1; 1048 #endif 1049 case RTM_DELADDR: 1050 case RTM_NEWADDR: 1051 case RTM_CHGADDR: 1052 return sizeof(struct ifa_xmsghdr); 1053 1054 case RTM_OOIFINFO: 1055 #ifdef COMPAT_14 1056 return sizeof(struct if_msghdr14); 1057 #else 1058 #ifdef DIAGNOSTIC 1059 printf("RTM_OOIFINFO\n"); 1060 #endif 1061 return -1; 1062 #endif 1063 case RTM_OIFINFO: 1064 #ifdef COMPAT_50 1065 return sizeof(struct if_msghdr50); 1066 #else 1067 #ifdef DIAGNOSTIC 1068 printf("RTM_OIFINFO\n"); 1069 #endif 1070 return -1; 1071 #endif 1072 1073 case RTM_IFINFO: 1074 return sizeof(struct if_xmsghdr); 1075 1076 case RTM_IFANNOUNCE: 1077 case RTM_IEEE80211: 1078 return sizeof(struct if_xannouncemsghdr); 1079 1080 default: 1081 return sizeof(struct rt_xmsghdr); 1082 } 1083 } 1084 1085 1086 struct mbuf * 1087 COMPATNAME(rt_msg1)(int type, struct rt_addrinfo *rtinfo, void *data, int datalen) 1088 { 1089 struct rt_xmsghdr *rtm; 1090 struct mbuf *m; 1091 int i; 1092 const struct sockaddr *sa; 1093 int len, dlen; 1094 1095 m = m_gethdr(M_DONTWAIT, MT_DATA); 1096 if (m == NULL) 1097 return m; 1098 MCLAIM(m, &COMPATNAME(routedomain).dom_mowner); 1099 1100 if ((len = rt_getlen(type)) == -1) 1101 goto out; 1102 if (len > MHLEN + MLEN) 1103 panic("%s: message too long", __func__); 1104 else if (len > MHLEN) { 1105 m->m_next = m_get(M_DONTWAIT, MT_DATA); 1106 if (m->m_next == NULL) 1107 goto out; 1108 MCLAIM(m->m_next, m->m_owner); 1109 m->m_pkthdr.len = len; 1110 m->m_len = MHLEN; 1111 m->m_next->m_len = len - MHLEN; 1112 } else { 1113 m->m_pkthdr.len = m->m_len = len; 1114 } 1115 m_reset_rcvif(m); 1116 m_copyback(m, 0, datalen, data); 1117 if (len > datalen) 1118 (void)memset(mtod(m, char *) + datalen, 0, len - datalen); 1119 rtm = mtod(m, struct rt_xmsghdr *); 1120 for (i = 0; i < RTAX_MAX; i++) { 1121 if ((sa = rtinfo->rti_info[i]) == NULL) 1122 continue; 1123 rtinfo->rti_addrs |= (1 << i); 1124 dlen = RT_XROUNDUP(sa->sa_len); 1125 m_copyback(m, len, sa->sa_len, sa); 1126 if (dlen != sa->sa_len) { 1127 /* 1128 * Up to 6 + 1 nul's since roundup is to 1129 * sizeof(uint64_t) (8 bytes) 1130 */ 1131 m_copyback(m, len + sa->sa_len, 1132 dlen - sa->sa_len, "\0\0\0\0\0\0"); 1133 } 1134 len += dlen; 1135 } 1136 if (m->m_pkthdr.len != len) 1137 goto out; 1138 rtm->rtm_msglen = len; 1139 rtm->rtm_version = RTM_XVERSION; 1140 rtm->rtm_type = type; 1141 return m; 1142 out: 1143 m_freem(m); 1144 return NULL; 1145 } 1146 1147 /* 1148 * rt_msg2 1149 * 1150 * fills 'cp' or 'w'.w_tmem with the routing socket message and 1151 * returns the length of the message in 'lenp'. 1152 * 1153 * if walkarg is 0, cp is expected to be 0 or a buffer large enough to hold 1154 * the message 1155 * otherwise walkarg's w_needed is updated and if the user buffer is 1156 * specified and w_needed indicates space exists the information is copied 1157 * into the temp space (w_tmem). w_tmem is [re]allocated if necessary, 1158 * if the allocation fails ENOBUFS is returned. 1159 */ 1160 static int 1161 rt_msg2(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w, 1162 int *lenp) 1163 { 1164 int i; 1165 int len, dlen, second_time = 0; 1166 char *cp0, *cp = cpv; 1167 1168 rtinfo->rti_addrs = 0; 1169 again: 1170 if ((len = rt_getlen(type)) == -1) 1171 return EINVAL; 1172 1173 if ((cp0 = cp) != NULL) 1174 cp += len; 1175 for (i = 0; i < RTAX_MAX; i++) { 1176 const struct sockaddr *sa; 1177 1178 if ((sa = rtinfo->rti_info[i]) == NULL) 1179 continue; 1180 rtinfo->rti_addrs |= (1 << i); 1181 dlen = RT_XROUNDUP(sa->sa_len); 1182 if (cp) { 1183 int diff = dlen - sa->sa_len; 1184 (void)memcpy(cp, sa, (size_t)sa->sa_len); 1185 cp += sa->sa_len; 1186 if (diff > 0) { 1187 (void)memset(cp, 0, (size_t)diff); 1188 cp += diff; 1189 } 1190 } 1191 len += dlen; 1192 } 1193 if (cp == NULL && w != NULL && !second_time) { 1194 struct rt_walkarg *rw = w; 1195 1196 rw->w_needed += len; 1197 if (rw->w_needed <= 0 && rw->w_where) { 1198 if (rw->w_tmemsize < len) { 1199 if (rw->w_tmem) 1200 free(rw->w_tmem, M_RTABLE); 1201 rw->w_tmem = malloc(len, M_RTABLE, M_NOWAIT); 1202 if (rw->w_tmem) 1203 rw->w_tmemsize = len; 1204 else 1205 rw->w_tmemsize = 0; 1206 } 1207 if (rw->w_tmem) { 1208 cp = rw->w_tmem; 1209 second_time = 1; 1210 goto again; 1211 } else { 1212 rw->w_tmemneeded = len; 1213 return ENOBUFS; 1214 } 1215 } 1216 } 1217 if (cp) { 1218 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)cp0; 1219 1220 rtm->rtm_version = RTM_XVERSION; 1221 rtm->rtm_type = type; 1222 rtm->rtm_msglen = len; 1223 } 1224 if (lenp) 1225 *lenp = len; 1226 return 0; 1227 } 1228 1229 #ifndef COMPAT_RTSOCK 1230 int 1231 rt_msg3(int type, struct rt_addrinfo *rtinfo, void *cpv, struct rt_walkarg *w, 1232 int *lenp) 1233 { 1234 return rt_msg2(type, rtinfo, cpv, w, lenp); 1235 } 1236 #endif 1237 1238 /* 1239 * This routine is called to generate a message from the routing 1240 * socket indicating that a redirect has occurred, a routing lookup 1241 * has failed, or that a protocol has detected timeouts to a particular 1242 * destination. 1243 */ 1244 void 1245 COMPATNAME(rt_missmsg)(int type, const struct rt_addrinfo *rtinfo, int flags, 1246 int error) 1247 { 1248 struct rt_xmsghdr rtm; 1249 struct mbuf *m; 1250 const struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1251 struct rt_addrinfo info = *rtinfo; 1252 1253 COMPATCALL(rt_missmsg, (type, rtinfo, flags, error)); 1254 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1255 return; 1256 memset(&rtm, 0, sizeof(rtm)); 1257 rtm.rtm_pid = curproc->p_pid; 1258 rtm.rtm_flags = RTF_DONE | flags; 1259 rtm.rtm_errno = error; 1260 m = COMPATNAME(rt_msg1)(type, &info, &rtm, sizeof(rtm)); 1261 if (m == NULL) 1262 return; 1263 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs; 1264 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0); 1265 } 1266 1267 /* 1268 * This routine is called to generate a message from the routing 1269 * socket indicating that the status of a network interface has changed. 1270 */ 1271 void 1272 COMPATNAME(rt_ifmsg)(struct ifnet *ifp) 1273 { 1274 struct if_xmsghdr ifm; 1275 struct mbuf *m; 1276 struct rt_addrinfo info; 1277 1278 COMPATCALL(rt_ifmsg, (ifp)); 1279 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1280 return; 1281 (void)memset(&info, 0, sizeof(info)); 1282 (void)memset(&ifm, 0, sizeof(ifm)); 1283 ifm.ifm_index = ifp->if_index; 1284 ifm.ifm_flags = ifp->if_flags; 1285 ifm.ifm_data = ifp->if_data; 1286 ifm.ifm_addrs = 0; 1287 m = COMPATNAME(rt_msg1)(RTM_IFINFO, &info, &ifm, sizeof(ifm)); 1288 if (m == NULL) 1289 return; 1290 COMPATNAME(route_enqueue)(m, 0); 1291 #ifdef COMPAT_14 1292 compat_14_rt_oifmsg(ifp); 1293 #endif 1294 #ifdef COMPAT_50 1295 compat_50_rt_oifmsg(ifp); 1296 #endif 1297 } 1298 1299 #ifndef COMPAT_RTSOCK 1300 static int 1301 if_addrflags(struct ifaddr *ifa) 1302 { 1303 1304 switch (ifa->ifa_addr->sa_family) { 1305 #ifdef INET 1306 case AF_INET: 1307 return ((struct in_ifaddr *)ifa)->ia4_flags; 1308 #endif 1309 #ifdef INET6 1310 case AF_INET6: 1311 return ((struct in6_ifaddr *)ifa)->ia6_flags; 1312 #endif 1313 default: 1314 return 0; 1315 } 1316 } 1317 #endif 1318 1319 /* 1320 * This is called to generate messages from the routing socket 1321 * indicating a network interface has had addresses associated with it. 1322 * if we ever reverse the logic and replace messages TO the routing 1323 * socket indicate a request to configure interfaces, then it will 1324 * be unnecessary as the routing socket will automatically generate 1325 * copies of it. 1326 */ 1327 void 1328 COMPATNAME(rt_newaddrmsg)(int cmd, struct ifaddr *ifa, int error, 1329 struct rtentry *rt) 1330 { 1331 #define cmdpass(__cmd, __pass) (((__cmd) << 2) | (__pass)) 1332 struct rt_addrinfo info; 1333 const struct sockaddr *sa; 1334 int pass; 1335 struct mbuf *m; 1336 struct ifnet *ifp; 1337 struct rt_xmsghdr rtm; 1338 struct ifa_xmsghdr ifam; 1339 int ncmd; 1340 1341 KASSERT(ifa != NULL); 1342 KASSERT(ifa->ifa_addr != NULL); 1343 ifp = ifa->ifa_ifp; 1344 #ifdef SCTP 1345 if (cmd == RTM_ADD) { 1346 sctp_add_ip_address(ifa); 1347 } else if (cmd == RTM_DELETE) { 1348 sctp_delete_ip_address(ifa); 1349 } 1350 #endif 1351 1352 COMPATCALL(rt_newaddrmsg, (cmd, ifa, error, rt)); 1353 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1354 return; 1355 for (pass = 1; pass < 3; pass++) { 1356 memset(&info, 0, sizeof(info)); 1357 switch (cmdpass(cmd, pass)) { 1358 case cmdpass(RTM_ADD, 1): 1359 case cmdpass(RTM_CHANGE, 1): 1360 case cmdpass(RTM_DELETE, 2): 1361 case cmdpass(RTM_NEWADDR, 1): 1362 case cmdpass(RTM_DELADDR, 1): 1363 case cmdpass(RTM_CHGADDR, 1): 1364 switch (cmd) { 1365 case RTM_ADD: 1366 ncmd = RTM_XNEWADDR; 1367 break; 1368 case RTM_DELETE: 1369 ncmd = RTM_XDELADDR; 1370 break; 1371 case RTM_CHANGE: 1372 ncmd = RTM_XCHGADDR; 1373 break; 1374 case RTM_NEWADDR: 1375 ncmd = RTM_XNEWADDR; 1376 break; 1377 case RTM_DELADDR: 1378 ncmd = RTM_XDELADDR; 1379 break; 1380 case RTM_CHGADDR: 1381 ncmd = RTM_XCHGADDR; 1382 break; 1383 default: 1384 panic("%s: unknown command %d", __func__, cmd); 1385 } 1386 #ifdef COMPAT_70 1387 compat_70_rt_newaddrmsg1(ncmd, ifa); 1388 #endif 1389 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1390 KASSERT(ifp->if_dl != NULL); 1391 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 1392 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1393 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1394 memset(&ifam, 0, sizeof(ifam)); 1395 ifam.ifam_index = ifp->if_index; 1396 ifam.ifam_metric = ifa->ifa_metric; 1397 ifam.ifam_flags = ifa->ifa_flags; 1398 #ifndef COMPAT_RTSOCK 1399 ifam.ifam_pid = curproc->p_pid; 1400 ifam.ifam_addrflags = if_addrflags(ifa); 1401 #endif 1402 m = COMPATNAME(rt_msg1)(ncmd, &info, &ifam, sizeof(ifam)); 1403 if (m == NULL) 1404 continue; 1405 mtod(m, struct ifa_xmsghdr *)->ifam_addrs = 1406 info.rti_addrs; 1407 break; 1408 case cmdpass(RTM_ADD, 2): 1409 case cmdpass(RTM_CHANGE, 2): 1410 case cmdpass(RTM_DELETE, 1): 1411 if (rt == NULL) 1412 continue; 1413 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1414 info.rti_info[RTAX_DST] = sa = rt_getkey(rt); 1415 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1416 memset(&rtm, 0, sizeof(rtm)); 1417 rtm.rtm_pid = curproc->p_pid; 1418 rtm.rtm_index = ifp->if_index; 1419 rtm.rtm_flags |= rt->rt_flags; 1420 rtm.rtm_errno = error; 1421 m = COMPATNAME(rt_msg1)(cmd, &info, &rtm, sizeof(rtm)); 1422 if (m == NULL) 1423 continue; 1424 mtod(m, struct rt_xmsghdr *)->rtm_addrs = info.rti_addrs; 1425 break; 1426 default: 1427 continue; 1428 } 1429 #ifdef DIAGNOSTIC 1430 if (m == NULL) 1431 panic("%s: called with wrong command", __func__); 1432 #endif 1433 COMPATNAME(route_enqueue)(m, sa ? sa->sa_family : 0); 1434 } 1435 #undef cmdpass 1436 1437 } 1438 1439 static struct mbuf * 1440 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1441 struct rt_addrinfo *info) 1442 { 1443 struct if_xannouncemsghdr ifan; 1444 1445 memset(info, 0, sizeof(*info)); 1446 memset(&ifan, 0, sizeof(ifan)); 1447 ifan.ifan_index = ifp->if_index; 1448 strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name)); 1449 ifan.ifan_what = what; 1450 return COMPATNAME(rt_msg1)(type, info, &ifan, sizeof(ifan)); 1451 } 1452 1453 /* 1454 * This is called to generate routing socket messages indicating 1455 * network interface arrival and departure. 1456 */ 1457 void 1458 COMPATNAME(rt_ifannouncemsg)(struct ifnet *ifp, int what) 1459 { 1460 struct mbuf *m; 1461 struct rt_addrinfo info; 1462 1463 COMPATCALL(rt_ifannouncemsg, (ifp, what)); 1464 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1465 return; 1466 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1467 if (m == NULL) 1468 return; 1469 COMPATNAME(route_enqueue)(m, 0); 1470 } 1471 1472 /* 1473 * This is called to generate routing socket messages indicating 1474 * IEEE80211 wireless events. 1475 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1476 */ 1477 void 1478 COMPATNAME(rt_ieee80211msg)(struct ifnet *ifp, int what, void *data, 1479 size_t data_len) 1480 { 1481 struct mbuf *m; 1482 struct rt_addrinfo info; 1483 1484 COMPATCALL(rt_ieee80211msg, (ifp, what, data, data_len)); 1485 if (COMPATNAME(route_info).ri_cb.any_count == 0) 1486 return; 1487 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1488 if (m == NULL) 1489 return; 1490 /* 1491 * Append the ieee80211 data. Try to stick it in the 1492 * mbuf containing the ifannounce msg; otherwise allocate 1493 * a new mbuf and append. 1494 * 1495 * NB: we assume m is a single mbuf. 1496 */ 1497 if (data_len > M_TRAILINGSPACE(m)) { 1498 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1499 if (n == NULL) { 1500 m_freem(m); 1501 return; 1502 } 1503 (void)memcpy(mtod(n, void *), data, data_len); 1504 n->m_len = data_len; 1505 m->m_next = n; 1506 } else if (data_len > 0) { 1507 (void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len); 1508 m->m_len += data_len; 1509 } 1510 if (m->m_flags & M_PKTHDR) 1511 m->m_pkthdr.len += data_len; 1512 mtod(m, struct if_xannouncemsghdr *)->ifan_msglen += data_len; 1513 COMPATNAME(route_enqueue)(m, 0); 1514 } 1515 1516 /* 1517 * This is used in dumping the kernel table via sysctl(). 1518 */ 1519 static int 1520 sysctl_dumpentry(struct rtentry *rt, void *v) 1521 { 1522 struct rt_walkarg *w = v; 1523 int error = 0, size; 1524 struct rt_addrinfo info; 1525 1526 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1527 return 0; 1528 memset(&info, 0, sizeof(info)); 1529 info.rti_info[RTAX_DST] = rt_getkey(rt); 1530 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1531 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1532 info.rti_info[RTAX_TAG] = rt_gettag(rt); 1533 if (rt->rt_ifp) { 1534 const struct ifaddr *rtifa; 1535 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_dl->ifa_addr; 1536 /* rtifa used to be simply rt->rt_ifa. If rt->rt_ifa != NULL, 1537 * then rt_get_ifa() != NULL. So this ought to still be safe. 1538 * --dyoung 1539 */ 1540 rtifa = rt_get_ifa(rt); 1541 info.rti_info[RTAX_IFA] = rtifa->ifa_addr; 1542 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1543 info.rti_info[RTAX_BRD] = rtifa->ifa_dstaddr; 1544 } 1545 if ((error = rt_msg2(RTM_GET, &info, 0, w, &size))) 1546 return error; 1547 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1548 struct rt_xmsghdr *rtm = (struct rt_xmsghdr *)w->w_tmem; 1549 1550 rtm->rtm_flags = rt->rt_flags; 1551 rtm->rtm_use = rt->rt_use; 1552 rtm_setmetrics(rt, rtm); 1553 KASSERT(rt->rt_ifp != NULL); 1554 rtm->rtm_index = rt->rt_ifp->if_index; 1555 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1556 rtm->rtm_addrs = info.rti_addrs; 1557 if ((error = copyout(rtm, w->w_where, size)) != 0) 1558 w->w_where = NULL; 1559 else 1560 w->w_where = (char *)w->w_where + size; 1561 } 1562 return error; 1563 } 1564 1565 static int 1566 sysctl_iflist_if(struct ifnet *ifp, struct rt_walkarg *w, 1567 struct rt_addrinfo *info, size_t len) 1568 { 1569 struct if_xmsghdr *ifm; 1570 int error; 1571 1572 ifm = (struct if_xmsghdr *)w->w_tmem; 1573 ifm->ifm_index = ifp->if_index; 1574 ifm->ifm_flags = ifp->if_flags; 1575 ifm->ifm_data = ifp->if_data; 1576 ifm->ifm_addrs = info->rti_addrs; 1577 if ((error = copyout(ifm, w->w_where, len)) == 0) 1578 w->w_where = (char *)w->w_where + len; 1579 return error; 1580 } 1581 1582 static int 1583 sysctl_iflist_addr(struct rt_walkarg *w, struct ifaddr *ifa, 1584 struct rt_addrinfo *info) 1585 { 1586 int len, error; 1587 1588 if ((error = rt_msg2(RTM_XNEWADDR, info, 0, w, &len))) 1589 return error; 1590 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1591 struct ifa_xmsghdr *ifam; 1592 1593 ifam = (struct ifa_xmsghdr *)w->w_tmem; 1594 ifam->ifam_index = ifa->ifa_ifp->if_index; 1595 ifam->ifam_flags = ifa->ifa_flags; 1596 ifam->ifam_metric = ifa->ifa_metric; 1597 ifam->ifam_addrs = info->rti_addrs; 1598 #ifndef COMPAT_RTSOCK 1599 ifam->ifam_pid = 0; 1600 ifam->ifam_addrflags = if_addrflags(ifa); 1601 #endif 1602 if ((error = copyout(w->w_tmem, w->w_where, len)) == 0) 1603 w->w_where = (char *)w->w_where + len; 1604 } 1605 return error; 1606 } 1607 1608 static int 1609 sysctl_iflist(int af, struct rt_walkarg *w, int type) 1610 { 1611 struct ifnet *ifp; 1612 struct ifaddr *ifa; 1613 struct rt_addrinfo info; 1614 int cmd, len, error = 0; 1615 int (*iflist_if)(struct ifnet *, struct rt_walkarg *, 1616 struct rt_addrinfo *, size_t); 1617 int (*iflist_addr)(struct rt_walkarg *, struct ifaddr *, 1618 struct rt_addrinfo *); 1619 int s; 1620 struct psref psref; 1621 int bound = curlwp_bind(); 1622 1623 switch (type) { 1624 case NET_RT_IFLIST: 1625 cmd = RTM_IFINFO; 1626 iflist_if = sysctl_iflist_if; 1627 iflist_addr = sysctl_iflist_addr; 1628 break; 1629 #ifdef COMPAT_14 1630 case NET_RT_OOOIFLIST: 1631 cmd = RTM_OOIFINFO; 1632 iflist_if = compat_14_iflist; 1633 iflist_addr = compat_70_iflist_addr; 1634 break; 1635 #endif 1636 #ifdef COMPAT_50 1637 case NET_RT_OOIFLIST: 1638 cmd = RTM_OIFINFO; 1639 iflist_if = compat_50_iflist; 1640 iflist_addr = compat_70_iflist_addr; 1641 break; 1642 #endif 1643 #ifdef COMPAT_70 1644 case NET_RT_OIFLIST: 1645 cmd = RTM_IFINFO; 1646 iflist_if = sysctl_iflist_if; 1647 iflist_addr = compat_70_iflist_addr; 1648 break; 1649 #endif 1650 default: 1651 #ifdef DIAGNOSTIC 1652 printf("sysctl_iflist\n"); 1653 #endif 1654 return EINVAL; 1655 } 1656 1657 memset(&info, 0, sizeof(info)); 1658 1659 s = pserialize_read_enter(); 1660 IFNET_READER_FOREACH(ifp) { 1661 if (w->w_arg && w->w_arg != ifp->if_index) 1662 continue; 1663 if (IFADDR_READER_EMPTY(ifp)) 1664 continue; 1665 1666 psref_acquire(&psref, &ifp->if_psref, ifnet_psref_class); 1667 pserialize_read_exit(s); 1668 1669 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 1670 if ((error = rt_msg2(cmd, &info, NULL, w, &len)) != 0) 1671 goto release_exit; 1672 info.rti_info[RTAX_IFP] = NULL; 1673 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1674 if ((error = iflist_if(ifp, w, &info, len)) != 0) 1675 goto release_exit; 1676 } 1677 IFADDR_READER_FOREACH(ifa, ifp) { 1678 if (af && af != ifa->ifa_addr->sa_family) 1679 continue; 1680 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1681 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1682 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1683 if ((error = iflist_addr(w, ifa, &info)) != 0) 1684 goto release_exit; 1685 } 1686 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1687 info.rti_info[RTAX_BRD] = NULL; 1688 1689 s = pserialize_read_enter(); 1690 psref_release(&psref, &ifp->if_psref, ifnet_psref_class); 1691 } 1692 pserialize_read_exit(s); 1693 curlwp_bindx(bound); 1694 1695 return 0; 1696 1697 release_exit: 1698 psref_release(&psref, &ifp->if_psref, ifnet_psref_class); 1699 curlwp_bindx(bound); 1700 return error; 1701 } 1702 1703 static int 1704 sysctl_rtable(SYSCTLFN_ARGS) 1705 { 1706 void *where = oldp; 1707 size_t *given = oldlenp; 1708 int i, s, error = EINVAL; 1709 u_char af; 1710 struct rt_walkarg w; 1711 1712 if (namelen == 1 && name[0] == CTL_QUERY) 1713 return sysctl_query(SYSCTLFN_CALL(rnode)); 1714 1715 if (newp) 1716 return EPERM; 1717 if (namelen != 3) 1718 return EINVAL; 1719 af = name[0]; 1720 w.w_tmemneeded = 0; 1721 w.w_tmemsize = 0; 1722 w.w_tmem = NULL; 1723 again: 1724 /* we may return here if a later [re]alloc of the t_mem buffer fails */ 1725 if (w.w_tmemneeded) { 1726 w.w_tmem = malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK); 1727 w.w_tmemsize = w.w_tmemneeded; 1728 w.w_tmemneeded = 0; 1729 } 1730 w.w_op = name[1]; 1731 w.w_arg = name[2]; 1732 w.w_given = *given; 1733 w.w_needed = 0 - w.w_given; 1734 w.w_where = where; 1735 1736 s = splsoftnet(); 1737 switch (w.w_op) { 1738 1739 case NET_RT_DUMP: 1740 case NET_RT_FLAGS: 1741 #ifdef INET 1742 /* 1743 * take care of llinfo entries, the caller must 1744 * specify an AF 1745 */ 1746 if (w.w_op == NET_RT_FLAGS && 1747 (w.w_arg == 0 || w.w_arg & RTF_LLDATA)) { 1748 if (af != 0) 1749 error = lltable_sysctl_dumparp(af, &w); 1750 else 1751 error = EINVAL; 1752 break; 1753 } 1754 #endif /* INET */ 1755 1756 for (i = 1; i <= AF_MAX; i++) 1757 if ((af == 0 || af == i) && 1758 (error = rt_walktree(i, sysctl_dumpentry, &w))) 1759 break; 1760 break; 1761 1762 #ifdef COMPAT_14 1763 case NET_RT_OOOIFLIST: 1764 error = sysctl_iflist(af, &w, w.w_op); 1765 break; 1766 #endif 1767 #ifdef COMPAT_50 1768 case NET_RT_OOIFLIST: 1769 error = sysctl_iflist(af, &w, w.w_op); 1770 break; 1771 #endif 1772 #ifdef COMPAT_70 1773 case NET_RT_OIFLIST: 1774 error = sysctl_iflist(af, &w, w.w_op); 1775 break; 1776 #endif 1777 case NET_RT_IFLIST: 1778 error = sysctl_iflist(af, &w, w.w_op); 1779 break; 1780 } 1781 splx(s); 1782 1783 /* check to see if we couldn't allocate memory with NOWAIT */ 1784 if (error == ENOBUFS && w.w_tmem == 0 && w.w_tmemneeded) 1785 goto again; 1786 1787 if (w.w_tmem) 1788 free(w.w_tmem, M_RTABLE); 1789 w.w_needed += w.w_given; 1790 if (where) { 1791 *given = (char *)w.w_where - (char *)where; 1792 if (*given < w.w_needed) 1793 return ENOMEM; 1794 } else { 1795 *given = (11 * w.w_needed) / 10; 1796 } 1797 return error; 1798 } 1799 1800 /* 1801 * Routing message software interrupt routine 1802 */ 1803 static void 1804 COMPATNAME(route_intr)(void *cookie) 1805 { 1806 struct sockproto proto = { .sp_family = PF_XROUTE, }; 1807 struct route_info * const ri = &COMPATNAME(route_info); 1808 struct mbuf *m; 1809 1810 mutex_enter(softnet_lock); 1811 KERNEL_LOCK(1, NULL); 1812 for (;;) { 1813 IFQ_LOCK(&ri->ri_intrq); 1814 IF_DEQUEUE(&ri->ri_intrq, m); 1815 IFQ_UNLOCK(&ri->ri_intrq); 1816 if (m == NULL) 1817 break; 1818 proto.sp_protocol = M_GETCTX(m, uintptr_t); 1819 raw_input(m, &proto, &ri->ri_src, &ri->ri_dst); 1820 } 1821 KERNEL_UNLOCK_ONE(NULL); 1822 mutex_exit(softnet_lock); 1823 } 1824 1825 /* 1826 * Enqueue a message to the software interrupt routine. 1827 */ 1828 void 1829 COMPATNAME(route_enqueue)(struct mbuf *m, int family) 1830 { 1831 struct route_info * const ri = &COMPATNAME(route_info); 1832 int wasempty; 1833 1834 IFQ_LOCK(&ri->ri_intrq); 1835 if (IF_QFULL(&ri->ri_intrq)) { 1836 IF_DROP(&ri->ri_intrq); 1837 IFQ_UNLOCK(&ri->ri_intrq); 1838 m_freem(m); 1839 } else { 1840 wasempty = IF_IS_EMPTY(&ri->ri_intrq); 1841 M_SETCTX(m, (uintptr_t)family); 1842 IF_ENQUEUE(&ri->ri_intrq, m); 1843 IFQ_UNLOCK(&ri->ri_intrq); 1844 if (wasempty) { 1845 kpreempt_disable(); 1846 softint_schedule(ri->ri_sih); 1847 kpreempt_enable(); 1848 } 1849 } 1850 } 1851 1852 static void 1853 COMPATNAME(route_init)(void) 1854 { 1855 struct route_info * const ri = &COMPATNAME(route_info); 1856 1857 #ifndef COMPAT_RTSOCK 1858 rt_init(); 1859 #endif 1860 1861 sysctl_net_route_setup(NULL); 1862 ri->ri_intrq.ifq_maxlen = ri->ri_maxqlen; 1863 ri->ri_sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1864 COMPATNAME(route_intr), NULL); 1865 IFQ_LOCK_INIT(&ri->ri_intrq); 1866 } 1867 1868 /* 1869 * Definitions of protocols supported in the ROUTE domain. 1870 */ 1871 #ifndef COMPAT_RTSOCK 1872 PR_WRAP_USRREQS(route); 1873 #else 1874 PR_WRAP_USRREQS(compat_50_route); 1875 #endif 1876 1877 static const struct pr_usrreqs route_usrreqs = { 1878 .pr_attach = COMPATNAME(route_attach_wrapper), 1879 .pr_detach = COMPATNAME(route_detach_wrapper), 1880 .pr_accept = COMPATNAME(route_accept_wrapper), 1881 .pr_bind = COMPATNAME(route_bind_wrapper), 1882 .pr_listen = COMPATNAME(route_listen_wrapper), 1883 .pr_connect = COMPATNAME(route_connect_wrapper), 1884 .pr_connect2 = COMPATNAME(route_connect2_wrapper), 1885 .pr_disconnect = COMPATNAME(route_disconnect_wrapper), 1886 .pr_shutdown = COMPATNAME(route_shutdown_wrapper), 1887 .pr_abort = COMPATNAME(route_abort_wrapper), 1888 .pr_ioctl = COMPATNAME(route_ioctl_wrapper), 1889 .pr_stat = COMPATNAME(route_stat_wrapper), 1890 .pr_peeraddr = COMPATNAME(route_peeraddr_wrapper), 1891 .pr_sockaddr = COMPATNAME(route_sockaddr_wrapper), 1892 .pr_rcvd = COMPATNAME(route_rcvd_wrapper), 1893 .pr_recvoob = COMPATNAME(route_recvoob_wrapper), 1894 .pr_send = COMPATNAME(route_send_wrapper), 1895 .pr_sendoob = COMPATNAME(route_sendoob_wrapper), 1896 .pr_purgeif = COMPATNAME(route_purgeif_wrapper), 1897 }; 1898 1899 static const struct protosw COMPATNAME(route_protosw)[] = { 1900 { 1901 .pr_type = SOCK_RAW, 1902 .pr_domain = &COMPATNAME(routedomain), 1903 .pr_flags = PR_ATOMIC|PR_ADDR, 1904 .pr_input = raw_input, 1905 .pr_ctlinput = raw_ctlinput, 1906 .pr_usrreqs = &route_usrreqs, 1907 .pr_init = raw_init, 1908 }, 1909 }; 1910 1911 struct domain COMPATNAME(routedomain) = { 1912 .dom_family = PF_XROUTE, 1913 .dom_name = DOMAINNAME, 1914 .dom_init = COMPATNAME(route_init), 1915 .dom_protosw = COMPATNAME(route_protosw), 1916 .dom_protoswNPROTOSW = 1917 &COMPATNAME(route_protosw)[__arraycount(COMPATNAME(route_protosw))], 1918 }; 1919 1920 static void 1921 sysctl_net_route_setup(struct sysctllog **clog) 1922 { 1923 const struct sysctlnode *rnode = NULL; 1924 1925 sysctl_createv(clog, 0, NULL, &rnode, 1926 CTLFLAG_PERMANENT, 1927 CTLTYPE_NODE, DOMAINNAME, 1928 SYSCTL_DESCR("PF_ROUTE information"), 1929 NULL, 0, NULL, 0, 1930 CTL_NET, PF_XROUTE, CTL_EOL); 1931 1932 sysctl_createv(clog, 0, NULL, NULL, 1933 CTLFLAG_PERMANENT, 1934 CTLTYPE_NODE, "rtable", 1935 SYSCTL_DESCR("Routing table information"), 1936 sysctl_rtable, 0, NULL, 0, 1937 CTL_NET, PF_XROUTE, 0 /* any protocol */, CTL_EOL); 1938 1939 sysctl_createv(clog, 0, &rnode, NULL, 1940 CTLFLAG_PERMANENT, 1941 CTLTYPE_STRUCT, "stats", 1942 SYSCTL_DESCR("Routing statistics"), 1943 NULL, 0, &rtstat, sizeof(rtstat), 1944 CTL_CREATE, CTL_EOL); 1945 } 1946