1 /* 2 * Copyright (c) 1988, 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)rtsock.c 7.35 (Berkeley) 03/05/93 8 */ 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/proc.h> 13 #include <sys/mbuf.h> 14 #include <sys/socket.h> 15 #include <sys/socketvar.h> 16 #include <sys/domain.h> 17 #include <sys/protosw.h> 18 19 #include <net/af.h> 20 #include <net/if.h> 21 #include <net/route.h> 22 #include <net/raw_cb.h> 23 24 struct sockaddr route_dst = { 2, PF_ROUTE, }; 25 struct sockaddr route_src = { 2, PF_ROUTE, }; 26 struct sockproto route_proto = { PF_ROUTE, }; 27 28 struct walkarg { 29 int w_op, w_arg, w_given, w_needed, w_tmemsize; 30 caddr_t w_where, w_tmem; 31 }; 32 33 static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *)); 34 static struct mbuf *rt_msg1 __P((int, struct rt_addrinfo *)); 35 static int rt_msg2 __P((int, struct rt_addrinfo *, caddr_t, 36 struct walkarg *)); 37 38 /* Sleazy use of local variables throughout file, warning!!!! */ 39 #define dst info.rti_info[RTAX_DST] 40 #define gate info.rti_info[RTAX_GATEWAY] 41 #define netmask info.rti_info[RTAX_NETMASK] 42 #define genmask info.rti_info[RTAX_GENMASK] 43 #define ifpaddr info.rti_info[RTAX_IFP] 44 #define ifaaddr info.rti_info[RTAX_IFA] 45 #define brdaddr info.rti_info[RTAX_BRD] 46 47 /*ARGSUSED*/ 48 route_usrreq(so, req, m, nam, control) 49 register struct socket *so; 50 int req; 51 struct mbuf *m, *nam, *control; 52 { 53 register int error = 0; 54 register struct rawcb *rp = sotorawcb(so); 55 int s; 56 if (req == PRU_ATTACH) { 57 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); 58 if (so->so_pcb = (caddr_t)rp) 59 bzero(so->so_pcb, sizeof(*rp)); 60 61 } 62 if (req == PRU_DETACH && rp) { 63 int af = rp->rcb_proto.sp_protocol; 64 if (af == AF_INET) 65 route_cb.ip_count--; 66 else if (af == AF_NS) 67 route_cb.ns_count--; 68 else if (af == AF_ISO) 69 route_cb.iso_count--; 70 route_cb.any_count--; 71 } 72 s = splnet(); 73 error = raw_usrreq(so, req, m, nam, control); 74 rp = sotorawcb(so); 75 if (req == PRU_ATTACH && rp) { 76 int af = rp->rcb_proto.sp_protocol; 77 if (error) { 78 free((caddr_t)rp, M_PCB); 79 splx(s); 80 return (error); 81 } 82 if (af == AF_INET) 83 route_cb.ip_count++; 84 else if (af == AF_NS) 85 route_cb.ns_count++; 86 else if (af == AF_ISO) 87 route_cb.iso_count++; 88 rp->rcb_faddr = &route_src; 89 route_cb.any_count++; 90 soisconnected(so); 91 so->so_options |= SO_USELOOPBACK; 92 } 93 splx(s); 94 return (error); 95 } 96 97 /*ARGSUSED*/ 98 route_output(m, so) 99 register struct mbuf *m; 100 struct socket *so; 101 { 102 register struct rt_msghdr *rtm = 0; 103 register struct rtentry *rt = 0; 104 struct rtentry *saved_nrt = 0; 105 struct rt_addrinfo info; 106 int len, error = 0; 107 struct ifnet *ifp = 0; 108 struct ifaddr *ifa = 0; 109 struct ifaddr *ifaof_ifpforaddr(), *ifa_ifwithroute(); 110 111 #define senderr(e) { error = e; goto flush;} 112 if (m == 0 || ((m->m_len < sizeof(long)) && 113 (m = m_pullup(m, sizeof(long))) == 0)) 114 return (ENOBUFS); 115 if ((m->m_flags & M_PKTHDR) == 0) 116 panic("route_output"); 117 len = m->m_pkthdr.len; 118 if (len < sizeof(*rtm) || 119 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 120 dst = 0; 121 senderr(EINVAL); 122 } 123 R_Malloc(rtm, struct rt_msghdr *, len); 124 if (rtm == 0) { 125 dst = 0; 126 senderr(ENOBUFS); 127 } 128 m_copydata(m, 0, len, (caddr_t)rtm); 129 if (rtm->rtm_version != RTM_VERSION) { 130 dst = 0; 131 senderr(EPROTONOSUPPORT); 132 } 133 rtm->rtm_pid = curproc->p_pid; 134 info.rti_addrs = rtm->rtm_addrs; 135 rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info); 136 if (dst == 0) 137 senderr(EINVAL); 138 if (genmask) { 139 struct radix_node *t, *rn_addmask(); 140 t = rn_addmask(genmask, 1, 2); 141 if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0) 142 genmask = (struct sockaddr *)(t->rn_key); 143 else 144 senderr(ENOBUFS); 145 } 146 switch (rtm->rtm_type) { 147 148 case RTM_ADD: 149 if (gate == 0) 150 senderr(EINVAL); 151 error = rtrequest(RTM_ADD, dst, gate, netmask, 152 rtm->rtm_flags, &saved_nrt); 153 if (error == 0 && saved_nrt) { 154 rt_setmetrics(rtm->rtm_inits, 155 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 156 saved_nrt->rt_refcnt--; 157 saved_nrt->rt_genmask = genmask; 158 } 159 break; 160 161 case RTM_DELETE: 162 error = rtrequest(RTM_DELETE, dst, gate, netmask, 163 rtm->rtm_flags, (struct rtentry **)0); 164 break; 165 166 case RTM_GET: 167 case RTM_CHANGE: 168 case RTM_LOCK: 169 rt = rtalloc1(dst, 0); 170 if (rt == 0) 171 senderr(ESRCH); 172 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 173 struct radix_node *rn, *rn_search(); 174 extern struct radix_node_head *mask_rnhead; 175 176 if (Bcmp(dst, rt_key(rt), dst->sa_len) != 0) 177 senderr(ESRCH); 178 if (netmask && (rn = rn_search(netmask, 179 mask_rnhead->rnh_treetop))) 180 netmask = (struct sockaddr *)rn->rn_key; 181 for (rn = rt->rt_nodes; rn; rn = rn->rn_dupedkey) 182 if (netmask == (struct sockaddr *)rn->rn_mask) 183 break; 184 if (rn == 0) 185 senderr(ETOOMANYREFS); 186 rt = (struct rtentry *)rn; 187 } 188 switch(rtm->rtm_type) { 189 190 case RTM_GET: 191 dst = rt_key(rt); 192 gate = rt->rt_gateway; 193 netmask = rt_mask(rt); 194 genmask = rt->rt_genmask; 195 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 196 if (ifp = rt->rt_ifp) { 197 ifpaddr = ifp->if_addrlist->ifa_addr; 198 ifaaddr = rt->rt_ifa->ifa_addr; 199 rtm->rtm_index = ifp->if_index; 200 } else { 201 ifpaddr = 0; 202 ifaaddr = 0; 203 } 204 } 205 len = rt_msg2(RTM_GET, &info, (caddr_t)0, 206 (struct walkarg *)0); 207 if (len > rtm->rtm_msglen) { 208 struct rt_msghdr *new_rtm; 209 R_Malloc(new_rtm, struct rt_msghdr *, len); 210 if (new_rtm == 0) 211 senderr(ENOBUFS); 212 Bcopy(rtm, new_rtm, rtm->rtm_msglen); 213 Free(rtm); rtm = new_rtm; 214 } 215 (void)rt_msg2(RTM_GET, &info, (caddr_t)rtm, 216 (struct walkarg *)0); 217 rtm->rtm_flags = rt->rt_flags; 218 rtm->rtm_rmx = rt->rt_rmx; 219 rtm->rtm_addrs = info.rti_addrs; 220 break; 221 222 case RTM_CHANGE: 223 if (gate && rt_setgate(rt, rt_key(rt), gate)) 224 senderr(EDQUOT); 225 /* new gateway could require new ifaddr, ifp; 226 flags may also be different; ifp may be specified 227 by ll sockaddr when protocol address is ambiguous */ 228 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && 229 (ifp = ifa->ifa_ifp)) 230 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, 231 ifp); 232 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || 233 (ifa = ifa_ifwithroute(rt->rt_flags, 234 rt_key(rt), gate))) 235 ifp = ifa->ifa_ifp; 236 if (ifa) { 237 register struct ifaddr *oifa = rt->rt_ifa; 238 if (oifa != ifa) { 239 if (oifa && oifa->ifa_rtrequest) 240 oifa->ifa_rtrequest(RTM_DELETE, 241 rt, gate); 242 rt->rt_ifa = ifa; 243 rt->rt_ifp = ifp; 244 } 245 } 246 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 247 &rt->rt_rmx); 248 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 249 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate); 250 if (genmask) 251 rt->rt_genmask = genmask; 252 /* 253 * Fall into 254 */ 255 case RTM_LOCK: 256 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 257 rt->rt_rmx.rmx_locks |= 258 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 259 break; 260 } 261 break; 262 263 default: 264 senderr(EOPNOTSUPP); 265 } 266 267 flush: 268 if (rtm) { 269 if (error) 270 rtm->rtm_errno = error; 271 else 272 rtm->rtm_flags |= RTF_DONE; 273 } 274 cleanup: 275 if (rt) 276 rtfree(rt); 277 { 278 register struct rawcb *rp = 0; 279 /* 280 * Check to see if we don't want our own messages. 281 */ 282 if ((so->so_options & SO_USELOOPBACK) == 0) { 283 if (route_cb.any_count <= 1) { 284 if (rtm) 285 Free(rtm); 286 m_freem(m); 287 return (error); 288 } 289 /* There is another listener, so construct message */ 290 rp = sotorawcb(so); 291 } 292 if (rtm) { 293 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 294 Free(rtm); 295 } 296 if (rp) 297 rp->rcb_proto.sp_family = 0; /* Avoid us */ 298 if (dst) 299 route_proto.sp_protocol = dst->sa_family; 300 raw_input(m, &route_proto, &route_src, &route_dst); 301 if (rp) 302 rp->rcb_proto.sp_family = PF_ROUTE; 303 } 304 return (error); 305 } 306 307 rt_setmetrics(which, in, out) 308 u_long which; 309 register struct rt_metrics *in, *out; 310 { 311 #define metric(f, e) if (which & (f)) out->e = in->e; 312 metric(RTV_RPIPE, rmx_recvpipe); 313 metric(RTV_SPIPE, rmx_sendpipe); 314 metric(RTV_SSTHRESH, rmx_ssthresh); 315 metric(RTV_RTT, rmx_rtt); 316 metric(RTV_RTTVAR, rmx_rttvar); 317 metric(RTV_HOPCOUNT, rmx_hopcount); 318 metric(RTV_MTU, rmx_mtu); 319 metric(RTV_EXPIRE, rmx_expire); 320 #undef metric 321 } 322 323 #define ROUNDUP(a) \ 324 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 325 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 326 327 static void 328 rt_xaddrs(cp, cplim, rtinfo) 329 register caddr_t cp, cplim; 330 register struct rt_addrinfo *rtinfo; 331 { 332 register struct sockaddr *sa; 333 register int i; 334 335 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info)); 336 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 337 if ((rtinfo->rti_addrs & (1 << i)) == 0) 338 continue; 339 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; 340 ADVANCE(cp, sa); 341 } 342 } 343 344 /* 345 * Copy data from a buffer back into the indicated mbuf chain, 346 * starting "off" bytes from the beginning, extending the mbuf 347 * chain if necessary. 348 */ 349 m_copyback(m0, off, len, cp) 350 struct mbuf *m0; 351 register int off; 352 register int len; 353 caddr_t cp; 354 355 { 356 register int mlen; 357 register struct mbuf *m = m0, *n; 358 int totlen = 0; 359 360 if (m0 == 0) 361 return; 362 while (off > (mlen = m->m_len)) { 363 off -= mlen; 364 totlen += mlen; 365 if (m->m_next == 0) { 366 n = m_getclr(M_DONTWAIT, m->m_type); 367 if (n == 0) 368 goto out; 369 n->m_len = min(MLEN, len + off); 370 m->m_next = n; 371 } 372 m = m->m_next; 373 } 374 while (len > 0) { 375 mlen = min (m->m_len - off, len); 376 bcopy(cp, off + mtod(m, caddr_t), (unsigned)mlen); 377 cp += mlen; 378 len -= mlen; 379 mlen += off; 380 off = 0; 381 totlen += mlen; 382 if (len == 0) 383 break; 384 if (m->m_next == 0) { 385 n = m_get(M_DONTWAIT, m->m_type); 386 if (n == 0) 387 break; 388 n->m_len = min(MLEN, len); 389 m->m_next = n; 390 } 391 m = m->m_next; 392 } 393 out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen)) 394 m->m_pkthdr.len = totlen; 395 } 396 397 static struct mbuf * 398 rt_msg1(type, rtinfo) 399 int type; 400 register struct rt_addrinfo *rtinfo; 401 { 402 register struct rt_msghdr *rtm; 403 register struct mbuf *m; 404 register int i; 405 register struct sockaddr *sa; 406 int len, dlen; 407 408 m = m_gethdr(M_DONTWAIT, MT_DATA); 409 if (m == 0) 410 return (m); 411 switch (type) { 412 413 case RTM_DELADDR: 414 case RTM_NEWADDR: 415 len = sizeof(struct ifa_msghdr); 416 break; 417 418 case RTM_IFINFO: 419 len = sizeof(struct if_msghdr); 420 break; 421 422 default: 423 len = sizeof(struct rt_msghdr); 424 } 425 if (len > MHLEN) 426 panic("rt_msg1"); 427 m->m_pkthdr.len = m->m_len = len; 428 m->m_pkthdr.rcvif = 0; 429 rtm = mtod(m, struct rt_msghdr *); 430 bzero((caddr_t)rtm, len); 431 for (i = 0; i < RTAX_MAX; i++) { 432 if ((sa = rtinfo->rti_info[i]) == NULL) 433 continue; 434 rtinfo->rti_addrs |= (1 << i); 435 dlen = ROUNDUP(sa->sa_len); 436 m_copyback(m, len, dlen, (caddr_t)sa); 437 len += dlen; 438 } 439 if (m->m_pkthdr.len != len) { 440 m_freem(m); 441 return (NULL); 442 } 443 rtm->rtm_msglen = len; 444 rtm->rtm_version = RTM_VERSION; 445 rtm->rtm_type = type; 446 return (m); 447 } 448 449 static int 450 rt_msg2(type, rtinfo, cp, w) 451 int type; 452 register struct rt_addrinfo *rtinfo; 453 caddr_t cp; 454 struct walkarg *w; 455 { 456 register int i; 457 int len, dlen, second_time = 0; 458 caddr_t cp0; 459 460 rtinfo->rti_addrs = 0; 461 again: 462 switch (type) { 463 464 case RTM_DELADDR: 465 case RTM_NEWADDR: 466 len = sizeof(struct ifa_msghdr); 467 break; 468 469 case RTM_IFINFO: 470 len = sizeof(struct if_msghdr); 471 break; 472 473 default: 474 len = sizeof(struct rt_msghdr); 475 } 476 if (cp0 = cp) 477 cp += len; 478 for (i = 0; i < RTAX_MAX; i++) { 479 register struct sockaddr *sa; 480 481 if ((sa = rtinfo->rti_info[i]) == 0) 482 continue; 483 rtinfo->rti_addrs |= (1 << i); 484 dlen = ROUNDUP(sa->sa_len); 485 if (cp) { 486 bcopy((caddr_t)sa, cp, (unsigned)dlen); 487 cp += dlen; 488 } 489 len += dlen; 490 } 491 if (cp == 0 && w != NULL && !second_time) { 492 register struct walkarg *rw = w; 493 494 rw->w_needed += len; 495 if (rw->w_needed <= 0 && rw->w_where) { 496 if (rw->w_tmemsize < len) { 497 if (rw->w_tmem) 498 free(rw->w_tmem, M_RTABLE); 499 if (rw->w_tmem = (caddr_t) 500 malloc(len, M_RTABLE, M_NOWAIT)) 501 rw->w_tmemsize = len; 502 } 503 if (rw->w_tmem) { 504 cp = rw->w_tmem; 505 second_time = 1; 506 goto again; 507 } else 508 rw->w_where = 0; 509 } 510 } 511 if (cp) { 512 register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 513 514 rtm->rtm_version = RTM_VERSION; 515 rtm->rtm_type = type; 516 rtm->rtm_msglen = len; 517 } 518 return (len); 519 } 520 521 /* 522 * This routine is called to generate a message from the routing 523 * socket indicating that a redirect has occured, a routing lookup 524 * has failed, or that a protocol has detected timeouts to a particular 525 * destination. 526 */ 527 rt_missmsg(type, rtinfo, flags, error) 528 int type, flags, error; 529 register struct rt_addrinfo *rtinfo; 530 { 531 register struct rt_msghdr *rtm; 532 register struct mbuf *m; 533 register int i; 534 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 535 536 if (route_cb.any_count == 0) 537 return; 538 m = rt_msg1(type, rtinfo); 539 if (m == 0) 540 return; 541 rtm = mtod(m, struct rt_msghdr *); 542 rtm->rtm_flags = RTF_DONE | flags; 543 rtm->rtm_errno = error; 544 rtm->rtm_addrs = rtinfo->rti_addrs; 545 route_proto.sp_protocol = sa ? sa->sa_family : 0; 546 raw_input(m, &route_proto, &route_src, &route_dst); 547 } 548 549 /* 550 * This routine is called to generate a message from the routing 551 * socket indicating that the status of a network interface has changed. 552 */ 553 rt_ifmsg(ifp) 554 register struct ifnet *ifp; 555 { 556 register struct if_msghdr *ifm; 557 struct mbuf *m; 558 struct rt_addrinfo info; 559 560 if (route_cb.any_count == 0) 561 return; 562 bzero((caddr_t)&info, sizeof(info)); 563 m = rt_msg1(RTM_IFINFO, &info); 564 if (m == 0) 565 return; 566 ifm = mtod(m, struct if_msghdr *); 567 ifm->ifm_index = ifp->if_index; 568 ifm->ifm_flags = ifp->if_flags; 569 ifm->ifm_data = ifp->if_data; 570 ifm->ifm_addrs = 0; 571 route_proto.sp_protocol = 0; 572 raw_input(m, &route_proto, &route_src, &route_dst); 573 } 574 575 /* 576 * This is called to generate messages from the routing socket 577 * indicating a network interface has had addresses associated with it. 578 * if we ever reverse the logic and replace messages TO the routing 579 * socket indicate a request to configure interfaces, then it will 580 * be unnecessary as the routing socket will automatically generate 581 * copies of it. 582 */ 583 rt_newaddrmsg(cmd, ifa, error, rt) 584 int cmd, error; 585 register struct ifaddr *ifa; 586 register struct rtentry *rt; 587 { 588 struct rt_addrinfo info; 589 struct sockaddr *sa; 590 int pass; 591 struct mbuf *m; 592 struct ifnet *ifp = ifa->ifa_ifp; 593 594 if (route_cb.any_count == 0) 595 return; 596 for (pass = 1; pass < 3; pass++) { 597 bzero((caddr_t)&info, sizeof(info)); 598 if ((cmd == RTM_ADD && pass == 1) || 599 (cmd == RTM_DELETE && pass == 2)) { 600 register struct ifa_msghdr *ifam; 601 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 602 603 ifaaddr = sa = ifa->ifa_addr; 604 ifpaddr = ifp->if_addrlist->ifa_addr; 605 netmask = ifa->ifa_netmask; 606 brdaddr = ifa->ifa_dstaddr; 607 if ((m = rt_msg1(ncmd, &info)) == NULL) 608 continue; 609 ifam = mtod(m, struct ifa_msghdr *); 610 ifam->ifam_index = ifp->if_index; 611 ifam->ifam_metric = ifa->ifa_metric; 612 ifam->ifam_flags = ifa->ifa_flags; 613 ifam->ifam_addrs = info.rti_addrs; 614 } 615 if ((cmd == RTM_ADD && pass == 2) || 616 (cmd == RTM_DELETE && pass == 1)) { 617 register struct rt_msghdr *rtm; 618 619 if (rt == 0) 620 continue; 621 netmask = rt_mask(rt); 622 dst = sa = rt_key(rt); 623 gate = rt->rt_gateway; 624 if ((m = rt_msg1(cmd, &info)) == NULL) 625 continue; 626 rtm = mtod(m, struct rt_msghdr *); 627 rtm->rtm_index = ifp->if_index; 628 rtm->rtm_flags |= rt->rt_flags; 629 rtm->rtm_errno = error; 630 rtm->rtm_addrs = info.rti_addrs; 631 } 632 route_proto.sp_protocol = sa ? sa->sa_family : 0; 633 raw_input(m, &route_proto, &route_src, &route_dst); 634 } 635 } 636 637 /* 638 * This is used in dumping the kernel table via sysctl(). 639 */ 640 sysctl_dumpentry(rn, w) 641 struct radix_node *rn; 642 register struct walkarg *w; 643 { 644 register struct sockaddr *sa; 645 register struct rtentry *rt = (struct rtentry *)rn; 646 int n, error = 0, size; 647 struct rt_addrinfo info; 648 649 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 650 return 0; 651 bzero((caddr_t)&info, sizeof(info)); 652 dst = rt_key(rt); 653 gate = rt->rt_gateway; 654 netmask = rt_mask(rt); 655 genmask = rt->rt_genmask; 656 size = rt_msg2(RTM_GET, &info, 0, w); 657 if (w->w_where && w->w_tmem) { 658 register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 659 660 rtm->rtm_flags = rt->rt_flags; 661 rtm->rtm_use = rt->rt_use; 662 rtm->rtm_rmx = rt->rt_rmx; 663 rtm->rtm_index = rt->rt_ifp->if_index; 664 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 665 rtm->rtm_addrs = info.rti_addrs; 666 if (error = copyout((caddr_t)rtm, w->w_where, size)) 667 w->w_where = NULL; 668 else 669 w->w_where += size; 670 } 671 return (error); 672 } 673 674 sysctl_iflist(af, w) 675 int af; 676 register struct walkarg *w; 677 { 678 register struct ifnet *ifp; 679 register struct ifaddr *ifa; 680 struct rt_addrinfo info; 681 struct sockaddr *sa; 682 int len, error = 0; 683 684 bzero((caddr_t)&info, sizeof(info)); 685 for (ifp = ifnet; ifp; ifp = ifp->if_next) { 686 if (w->w_arg && w->w_arg != ifp->if_index) 687 continue; 688 ifa = ifp->if_addrlist; 689 ifpaddr = ifa->ifa_addr; 690 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w); 691 ifpaddr = 0; 692 if (w->w_where && w->w_tmem) { 693 register struct if_msghdr *ifm; 694 695 ifm = (struct if_msghdr *)w->w_tmem; 696 ifm->ifm_index = ifp->if_index; 697 ifm->ifm_flags = ifp->if_flags; 698 ifm->ifm_data = ifp->if_data; 699 ifm->ifm_addrs = info.rti_addrs; 700 if (error = copyout((caddr_t)ifm, w->w_where, len)) 701 return (error); 702 w->w_where += len; 703 } 704 while (ifa = ifa->ifa_next) { 705 if (af && af != ifa->ifa_addr->sa_family) 706 continue; 707 ifaaddr = ifa->ifa_addr; 708 netmask = ifa->ifa_netmask; 709 brdaddr = ifa->ifa_dstaddr; 710 len = rt_msg2(RTM_NEWADDR, &info, 0, w); 711 if (w->w_where && w->w_tmem) { 712 register struct ifa_msghdr *ifam; 713 714 ifam = (struct ifa_msghdr *)w->w_tmem; 715 ifam->ifam_index = ifa->ifa_ifp->if_index; 716 ifam->ifam_flags = ifa->ifa_flags; 717 ifam->ifam_metric = ifa->ifa_metric; 718 ifam->ifam_addrs = info.rti_addrs; 719 if (error = copyout(w->w_tmem, w->w_where, len)) 720 return (error); 721 w->w_where += len; 722 } 723 } 724 ifaaddr = netmask = brdaddr = 0; 725 } 726 return (0); 727 } 728 729 sysctl_rtable(name, namelen, where, given, new, newlen) 730 int *name; 731 int namelen; 732 caddr_t where; 733 size_t *given; 734 caddr_t *new; 735 size_t newlen; 736 { 737 register struct radix_node_head *rnh; 738 int i, s, error = EINVAL; 739 u_char af; 740 struct walkarg w; 741 742 if (new) 743 return (EPERM); 744 if (namelen != 3) 745 return (EINVAL); 746 af = name[0]; 747 Bzero(&w, sizeof(w)); 748 w.w_where = where; 749 w.w_given = *given; 750 w.w_needed = 0 - w.w_given; 751 w.w_op = name[1]; 752 w.w_arg = name[2]; 753 754 s = splnet(); 755 switch (w.w_op) { 756 757 case NET_RT_DUMP: 758 case NET_RT_FLAGS: 759 for (i = 1; i <= AF_MAX; i++) 760 if ((rnh = rt_tables[i]) && (af == 0 || af == i) && 761 (error = rnh->rnh_walk(rnh->rnh_treetop, 762 sysctl_dumpentry, &w))) 763 break; 764 break; 765 766 case NET_RT_IFLIST: 767 error = sysctl_iflist(af, &w); 768 } 769 splx(s); 770 if (w.w_tmem) 771 free(w.w_tmem, M_RTABLE); 772 w.w_needed += w.w_given; 773 if (where) { 774 *given = w.w_where - where; 775 if (*given < w.w_needed) 776 return (ENOMEM); 777 } else { 778 *given = (11 * w.w_needed) / 10; 779 } 780 return (error); 781 } 782 783 /* 784 * Definitions of protocols supported in the ROUTE domain. 785 */ 786 787 int raw_init(),raw_usrreq(),raw_input(),raw_ctlinput(), route_init(); 788 extern struct domain routedomain; /* or at least forward */ 789 790 struct protosw routesw[] = { 791 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR, 792 raw_input, route_output, raw_ctlinput, 0, 793 route_usrreq, 794 raw_init, 0, 0, 0, 795 sysctl_rtable, 796 } 797 }; 798 799 int unp_externalize(), unp_dispose(); 800 801 struct domain routedomain = 802 { PF_ROUTE, "route", route_init, 0, 0, 803 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] }; 804