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 7.26 (Berkeley) 02/25/92 8 */ 9 10 #include "param.h" 11 #include "proc.h" 12 #include "mbuf.h" 13 #include "socket.h" 14 #include "socketvar.h" 15 #include "domain.h" 16 #include "protosw.h" 17 18 #include "af.h" 19 #include "if.h" 20 #include "route.h" 21 #include "raw_cb.h" 22 23 struct sockaddr route_dst = { 2, PF_ROUTE, }; 24 struct sockaddr route_src = { 2, PF_ROUTE, }; 25 struct sockproto route_proto = { PF_ROUTE, }; 26 27 struct walkarg { 28 int w_op, w_arg, w_given, w_needed, w_tmemsize; 29 caddr_t w_where, w_tmem; 30 }; 31 32 static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *)); 33 static struct mbuf *rt_msg1 __P((int, struct rt_addrinfo *)); 34 static int rt_msg2 __P((int, struct rt_addrinfo *, caddr_t, 35 struct walkarg *)); 36 37 /* Sleazy use of local variables throughout file, warning!!!! */ 38 #define dst info.rti_info[RTAX_DST] 39 #define gate info.rti_info[RTAX_GATEWAY] 40 #define netmask info.rti_info[RTAX_NETMASK] 41 #define genmask info.rti_info[RTAX_GENMASK] 42 #define ifpaddr info.rti_info[RTAX_IFP] 43 #define ifaaddr info.rti_info[RTAX_IFA] 44 #define brdaddr info.rti_info[RTAX_BRD] 45 46 /*ARGSUSED*/ 47 route_usrreq(so, req, m, nam, control) 48 register struct socket *so; 49 int req; 50 struct mbuf *m, *nam, *control; 51 { 52 register int error = 0; 53 register struct rawcb *rp = sotorawcb(so); 54 int s; 55 if (req == PRU_ATTACH) { 56 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); 57 if (so->so_pcb = (caddr_t)rp) 58 bzero(so->so_pcb, sizeof(*rp)); 59 60 } 61 if (req == PRU_DETACH && rp) { 62 int af = rp->rcb_proto.sp_protocol; 63 if (af == AF_INET) 64 route_cb.ip_count--; 65 else if (af == AF_NS) 66 route_cb.ns_count--; 67 else if (af == AF_ISO) 68 route_cb.iso_count--; 69 route_cb.any_count--; 70 } 71 s = splnet(); 72 error = raw_usrreq(so, req, m, nam, control); 73 rp = sotorawcb(so); 74 if (req == PRU_ATTACH && rp) { 75 int af = rp->rcb_proto.sp_protocol; 76 if (error) { 77 free((caddr_t)rp, M_PCB); 78 splx(s); 79 return (error); 80 } 81 if (af == AF_INET) 82 route_cb.ip_count++; 83 else if (af == AF_NS) 84 route_cb.ns_count++; 85 else if (af == AF_ISO) 86 route_cb.iso_count++; 87 rp->rcb_faddr = &route_src; 88 route_cb.any_count++; 89 soisconnected(so); 90 so->so_options |= SO_USELOOPBACK; 91 } 92 splx(s); 93 return (error); 94 } 95 96 /*ARGSUSED*/ 97 route_output(m, so) 98 register struct mbuf *m; 99 struct socket *so; 100 { 101 register struct rt_msghdr *rtm = 0; 102 register struct rtentry *rt = 0; 103 struct rtentry *saved_nrt = 0; 104 struct rt_addrinfo info; 105 int len, error = 0; 106 struct ifnet *ifp = 0; 107 struct ifaddr *ifa = 0; 108 struct ifaddr *ifaof_ifpforaddr(), *ifa_ifwithroute(); 109 110 #define senderr(e) { error = e; goto flush;} 111 if (m == 0 || m->m_len < sizeof(long)) 112 return (ENOBUFS); 113 if ((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 senderr(EINVAL); 121 R_Malloc(rtm, struct rt_msghdr *, len); 122 if (rtm == 0) 123 senderr(ENOBUFS); 124 m_copydata(m, 0, len, (caddr_t)rtm); 125 if (rtm->rtm_version != RTM_VERSION) 126 senderr(EPROTONOSUPPORT); 127 rtm->rtm_pid = curproc->p_pid; 128 info.rti_addrs = rtm->rtm_addrs; 129 rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info); 130 if (dst == 0) 131 senderr(EINVAL); 132 if (genmask) { 133 struct radix_node *t, *rn_addmask(); 134 t = rn_addmask(genmask, 1, 2); 135 if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0) 136 genmask = (struct sockaddr *)(t->rn_key); 137 else 138 senderr(ENOBUFS); 139 } 140 switch (rtm->rtm_type) { 141 142 case RTM_ADD: 143 if (gate == 0) 144 senderr(EINVAL); 145 error = rtrequest(RTM_ADD, dst, gate, netmask, 146 rtm->rtm_flags, &saved_nrt); 147 if (error == 0 && saved_nrt) { 148 rt_setmetrics(rtm->rtm_inits, 149 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 150 saved_nrt->rt_refcnt--; 151 saved_nrt->rt_genmask = genmask; 152 } 153 break; 154 155 case RTM_DELETE: 156 error = rtrequest(RTM_DELETE, dst, gate, netmask, 157 rtm->rtm_flags, (struct rtentry **)0); 158 break; 159 160 case RTM_GET: 161 case RTM_CHANGE: 162 case RTM_LOCK: 163 rt = rtalloc1(dst, 0); 164 if (rt == 0) 165 senderr(ESRCH); 166 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 167 struct radix_node *rn, *rn_search(); 168 extern struct radix_node_head *mask_rnhead; 169 170 if (Bcmp(dst, rt_key(rt), dst->sa_len) != 0) 171 senderr(ESRCH); 172 if (netmask && (rn = rn_search(netmask, 173 mask_rnhead->rnh_treetop))) 174 netmask = (struct sockaddr *)rn->rn_key; 175 for (rn = rt->rt_nodes; rn; rn = rn->rn_dupedkey) 176 if (netmask == (struct sockaddr *)rn->rn_mask) 177 break; 178 if (rn == 0) 179 senderr(ETOOMANYREFS); 180 rt = (struct rtentry *)rn; 181 } 182 switch(rtm->rtm_type) { 183 184 case RTM_GET: 185 dst = rt_key(rt); 186 gate = rt->rt_gateway; 187 netmask = rt_mask(rt); 188 genmask = rt->rt_genmask; 189 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 190 if (ifp = rt->rt_ifp) { 191 ifpaddr = ifp->if_addrlist->ifa_addr; 192 ifaaddr = rt->rt_ifa->ifa_addr; 193 rtm->rtm_index = ifp->if_index; 194 } else { 195 ifpaddr = 0; 196 ifaaddr = 0; 197 } 198 } 199 len = rt_msg2(RTM_GET, &info, (caddr_t)0, 200 (struct walkarg *)0); 201 if (len > rtm->rtm_msglen) { 202 struct rt_msghdr *new_rtm; 203 R_Malloc(new_rtm, struct rt_msghdr *, len); 204 if (new_rtm == 0) 205 senderr(ENOBUFS); 206 Bcopy(rtm, new_rtm, rtm->rtm_msglen); 207 Free(rtm); rtm = new_rtm; 208 } 209 (void)rt_msg2(RTM_GET, &info, (caddr_t)rtm, 210 (struct walkarg *)0); 211 rtm->rtm_flags = rt->rt_flags; 212 rtm->rtm_rmx = rt->rt_rmx; 213 break; 214 215 case RTM_CHANGE: 216 if (gate && rt_setgate(rt, rt_key(rt), gate)) 217 senderr(EDQUOT); 218 /* new gateway could require new ifaddr, ifp; 219 flags may also be different; ifp may be specified 220 by ll sockaddr when protocol address is ambiguous */ 221 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && 222 (ifp = ifa->ifa_ifp)) 223 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, 224 ifp); 225 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || 226 (ifa = ifa_ifwithroute(rt->rt_flags, 227 rt_key(rt), gate))) 228 ifp = ifa->ifa_ifp; 229 if (ifa) { 230 register struct ifaddr *oifa = rt->rt_ifa; 231 if (oifa != ifa) { 232 if (oifa && oifa->ifa_rtrequest) 233 oifa->ifa_rtrequest(RTM_DELETE, 234 rt, gate); 235 rt->rt_ifa = ifa; 236 rt->rt_ifp = ifp; 237 } 238 } 239 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 240 &rt->rt_rmx); 241 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 242 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate); 243 if (genmask) 244 rt->rt_genmask = genmask; 245 /* 246 * Fall into 247 */ 248 case RTM_LOCK: 249 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 250 rt->rt_rmx.rmx_locks |= 251 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 252 break; 253 } 254 break; 255 256 default: 257 senderr(EOPNOTSUPP); 258 } 259 260 flush: 261 if (rtm) { 262 if (error) 263 rtm->rtm_errno = error; 264 else 265 rtm->rtm_flags |= RTF_DONE; 266 } 267 cleanup: 268 if (rt) 269 rtfree(rt); 270 { 271 register struct rawcb *rp = 0; 272 /* 273 * Check to see if we don't want our own messages. 274 */ 275 if ((so->so_options & SO_USELOOPBACK) == 0) { 276 if (route_cb.any_count <= 1) { 277 if (rtm) 278 Free(rtm); 279 m_freem(m); 280 return (error); 281 } 282 /* There is another listener, so construct message */ 283 rp = sotorawcb(so); 284 } 285 if (rtm) { 286 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 287 Free(rtm); 288 } 289 if (rp) 290 rp->rcb_proto.sp_family = 0; /* Avoid us */ 291 if (dst) 292 route_proto.sp_protocol = dst->sa_family; 293 raw_input(m, &route_proto, &route_src, &route_dst); 294 if (rp) 295 rp->rcb_proto.sp_family = PF_ROUTE; 296 } 297 return (error); 298 } 299 300 rt_setmetrics(which, in, out) 301 u_long which; 302 register struct rt_metrics *in, *out; 303 { 304 #define metric(f, e) if (which & (f)) out->e = in->e; 305 metric(RTV_RPIPE, rmx_recvpipe); 306 metric(RTV_SPIPE, rmx_sendpipe); 307 metric(RTV_SSTHRESH, rmx_ssthresh); 308 metric(RTV_RTT, rmx_rtt); 309 metric(RTV_RTTVAR, rmx_rttvar); 310 metric(RTV_HOPCOUNT, rmx_hopcount); 311 metric(RTV_MTU, rmx_mtu); 312 metric(RTV_EXPIRE, rmx_expire); 313 #undef metric 314 } 315 316 #define ROUNDUP(a) \ 317 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 318 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 319 320 static void 321 rt_xaddrs(cp, cplim, rtinfo) 322 register caddr_t cp, cplim; 323 register struct rt_addrinfo *rtinfo; 324 { 325 register struct sockaddr *sa; 326 register int i; 327 328 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info)); 329 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 330 if ((rtinfo->rti_addrs & (1 << i)) == 0) 331 continue; 332 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; 333 ADVANCE(cp, sa); 334 } 335 } 336 /* 337 * Copy data from a buffer back into the indicated mbuf chain, 338 * starting "off" bytes from the beginning, extending the mbuf 339 * chain if necessary. 340 */ 341 m_copyback(m0, off, len, cp) 342 struct mbuf *m0; 343 register int off; 344 register int len; 345 caddr_t cp; 346 347 { 348 register int mlen; 349 register struct mbuf *m = m0, *n; 350 int totlen = 0; 351 352 if (m0 == 0) 353 return; 354 while (off > (mlen = m->m_len)) { 355 off -= mlen; 356 totlen += mlen; 357 if (m->m_next == 0) { 358 n = m_getclr(M_DONTWAIT, m->m_type); 359 if (n == 0) 360 goto out; 361 n->m_len = min(MLEN, len + off); 362 m->m_next = n; 363 } 364 m = m->m_next; 365 } 366 while (len > 0) { 367 mlen = min (m->m_len - off, len); 368 bcopy(cp, off + mtod(m, caddr_t), (unsigned)mlen); 369 cp += mlen; 370 len -= mlen; 371 mlen += off; 372 off = 0; 373 totlen += mlen; 374 if (len == 0) 375 break; 376 if (m->m_next == 0) { 377 n = m_get(M_DONTWAIT, m->m_type); 378 if (n == 0) 379 break; 380 n->m_len = min(MLEN, len); 381 m->m_next = n; 382 } 383 m = m->m_next; 384 } 385 out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen)) 386 m->m_pkthdr.len = totlen; 387 } 388 389 static struct mbuf * 390 rt_msg1(type, rtinfo) 391 int type; 392 register struct rt_addrinfo *rtinfo; 393 { 394 register struct rt_msghdr *rtm; 395 register struct mbuf *m; 396 register int i; 397 register struct sockaddr *sa; 398 int len, dlen; 399 400 m = m_gethdr(M_DONTWAIT, MT_DATA); 401 if (m == 0) 402 return (m); 403 switch (type) { 404 405 case RTM_DELADDR: 406 case RTM_NEWADDR: 407 len = sizeof(struct ifa_msghdr); 408 break; 409 410 case RTM_IFINFO: 411 len = sizeof(struct if_msghdr); 412 break; 413 414 default: 415 len = sizeof(struct rt_msghdr); 416 } 417 if (len > MHLEN) 418 panic("rt_msg1"); 419 m->m_pkthdr.len = m->m_len = len; 420 m->m_pkthdr.rcvif = 0; 421 rtm = mtod(m, struct rt_msghdr *); 422 bzero((caddr_t)rtm, len); 423 for (i = 0; i < RTAX_MAX; i++) { 424 if ((sa = rtinfo->rti_info[i]) == NULL) 425 continue; 426 rtinfo->rti_addrs |= (1 << i); 427 dlen = ROUNDUP(sa->sa_len); 428 m_copyback(m, len, dlen, (caddr_t)sa); 429 len += dlen; 430 } 431 if (m->m_pkthdr.len != len) { 432 m_freem(m); 433 return (NULL); 434 } 435 rtm->rtm_msglen = len; 436 rtm->rtm_version = RTM_VERSION; 437 rtm->rtm_type = type; 438 return (m); 439 } 440 441 static int 442 rt_msg2(type, rtinfo, cp, w) 443 int type; 444 register struct rt_addrinfo *rtinfo; 445 caddr_t cp; 446 struct walkarg *w; 447 { 448 register int i; 449 int len, dlen, second_time = 0; 450 caddr_t cp0; 451 452 rtinfo->rti_addrs = 0; 453 again: 454 switch (type) { 455 456 case RTM_DELADDR: 457 case RTM_NEWADDR: 458 len = sizeof(struct ifa_msghdr); 459 break; 460 461 case RTM_IFINFO: 462 len = sizeof(struct if_msghdr); 463 break; 464 465 default: 466 len = sizeof(struct rt_msghdr); 467 } 468 if (cp0 = cp) 469 cp += len; 470 for (i = 0; i < RTAX_MAX; i++) { 471 register struct sockaddr *sa; 472 473 if ((sa = rtinfo->rti_info[i]) == 0) 474 continue; 475 rtinfo->rti_addrs |= (1 << i); 476 dlen = ROUNDUP(sa->sa_len); 477 if (cp) { 478 bcopy((caddr_t)sa, cp, (unsigned)dlen); 479 cp += dlen; 480 } 481 len += dlen; 482 } 483 if (cp == 0 && w != NULL && !second_time) { 484 register struct walkarg *rw = w; 485 486 rw->w_needed += len; 487 if (rw->w_needed <= 0 && rw->w_where) { 488 if (rw->w_tmemsize < len) { 489 if (rw->w_tmem) 490 free(rw->w_tmem, M_RTABLE); 491 if (rw->w_tmem = (caddr_t) 492 malloc(len, M_RTABLE, M_NOWAIT)) 493 rw->w_tmemsize = len; 494 } 495 if (rw->w_tmem) { 496 cp = rw->w_tmem; 497 second_time = 1; 498 goto again; 499 } else 500 rw->w_where = 0; 501 } 502 } 503 if (cp) { 504 register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 505 506 rtm->rtm_version = RTM_VERSION; 507 rtm->rtm_type = type; 508 rtm->rtm_msglen = len; 509 } 510 return (len); 511 } 512 513 /* 514 * This routine is called to generate a message from the routing 515 * socket indicating that a redirect has occured, a routing lookup 516 * has failed, or that a protocol has detected timeouts to a particular 517 * destination. 518 */ 519 rt_missmsg(type, rtinfo, flags, error) 520 int type, flags, error; 521 register struct rt_addrinfo *rtinfo; 522 { 523 register struct rt_msghdr *rtm; 524 register struct mbuf *m; 525 register int i; 526 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 527 528 if (route_cb.any_count == 0) 529 return; 530 m = rt_msg1(type, rtinfo); 531 if (m == 0) 532 return; 533 rtm = mtod(m, struct rt_msghdr *); 534 rtm->rtm_flags = RTF_DONE | flags; 535 rtm->rtm_errno = error; 536 rtm->rtm_addrs = rtinfo->rti_addrs; 537 route_proto.sp_protocol = sa ? sa->sa_family : 0; 538 raw_input(m, &route_proto, &route_src, &route_dst); 539 } 540 541 /* 542 * This routine is called to generate a message from the routing 543 * socket indicating that the status of a network interface has changed. 544 */ 545 rt_ifmsg(ifp) 546 register struct ifnet *ifp; 547 { 548 register struct if_msghdr *ifm; 549 struct mbuf *m; 550 struct rt_addrinfo info; 551 552 if (route_cb.any_count == 0) 553 return; 554 bzero((caddr_t)&info, sizeof(info)); 555 m = rt_msg1(RTM_IFINFO, &info); 556 if (m == 0) 557 return; 558 ifm = mtod(m, struct if_msghdr *); 559 ifm->ifm_index = ifp->if_index; 560 ifm->ifm_flags = ifp->if_flags; 561 ifm->ifm_data = ifp->if_data; 562 ifm->ifm_addrs = 0; 563 route_proto.sp_protocol = 0; 564 raw_input(m, &route_proto, &route_src, &route_dst); 565 } 566 567 /* 568 * This is called to generate messages from the routing socket 569 * indicating a network interface has had addresses associated with it. 570 * if we ever reverse the logic and replace messages TO the routing 571 * socket indicate a request to configure interfaces, then it will 572 * be unnecessary as the routing socket will automatically generate 573 * copies of it. 574 */ 575 rt_newaddrmsg(cmd, ifa, error, rt) 576 int cmd, error; 577 register struct ifaddr *ifa; 578 register struct rtentry *rt; 579 { 580 struct rt_addrinfo info; 581 struct sockaddr *sa; 582 int pass; 583 struct mbuf *m; 584 struct ifnet *ifp = ifa->ifa_ifp; 585 586 if (route_cb.any_count == 0) 587 return; 588 for (pass = 1; pass < 3; pass++) { 589 bzero((caddr_t)&info, sizeof(info)); 590 if ((cmd == RTM_ADD && pass == 1) || 591 (cmd == RTM_DELETE && pass == 2)) { 592 register struct ifa_msghdr *ifam; 593 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 594 595 ifaaddr = sa = ifa->ifa_addr; 596 ifpaddr = ifp->if_addrlist->ifa_addr; 597 netmask = ifa->ifa_netmask; 598 brdaddr = ifa->ifa_dstaddr; 599 if ((m = rt_msg1(ncmd, &info)) == NULL) 600 continue; 601 ifam = mtod(m, struct ifa_msghdr *); 602 ifam->ifam_index = ifp->if_index; 603 ifam->ifam_metric = ifa->ifa_metric; 604 ifam->ifam_addrs = info.rti_addrs; 605 } 606 if ((cmd == RTM_ADD && pass == 2) || 607 (cmd == RTM_DELETE && pass == 1)) { 608 register struct rt_msghdr *rtm; 609 610 if (rt == 0) 611 continue; 612 netmask = rt_mask(rt); 613 dst = sa = rt_key(rt); 614 gate = rt->rt_gateway; 615 if ((m = rt_msg1(cmd, &info)) == NULL) 616 continue; 617 rtm = mtod(m, struct rt_msghdr *); 618 rtm->rtm_index = ifp->if_index; 619 rtm->rtm_flags |= rt->rt_flags; 620 rtm->rtm_errno = error; 621 rtm->rtm_addrs = info.rti_addrs; 622 } 623 route_proto.sp_protocol = sa ? sa->sa_family : 0; 624 raw_input(m, &route_proto, &route_src, &route_dst); 625 } 626 } 627 628 #include "kinfo.h" 629 /* 630 * This is used in dumping the kernel table via getkinfo(). 631 */ 632 rt_dumpentry(rn, w) 633 struct radix_node *rn; 634 register struct walkarg *w; 635 { 636 register struct sockaddr *sa; 637 register struct rtentry *rt = (struct rtentry *)rn; 638 int n, error = 0, size; 639 struct rt_addrinfo info; 640 641 if (w->w_op == KINFO_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 642 return 0; 643 bzero((caddr_t)&info, sizeof(info)); 644 dst = rt_key(rt); 645 gate = rt->rt_gateway; 646 netmask = rt_mask(rt); 647 genmask = rt->rt_genmask; 648 size = rt_msg2(RTM_GET, &info, 0, w); 649 if (w->w_where && w->w_tmem) { 650 register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 651 652 rtm->rtm_flags = rt->rt_flags; 653 rtm->rtm_use = rt->rt_use; 654 rtm->rtm_rmx = rt->rt_rmx; 655 rtm->rtm_index = rt->rt_ifp->if_index; 656 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 657 rtm->rtm_addrs = info.rti_addrs; 658 if (error = copyout((caddr_t)rtm, w->w_where, size)) 659 w->w_where = NULL; 660 else 661 w->w_where += size; 662 } 663 return (error); 664 } 665 666 kinfo_iflist(af, w) 667 int af; 668 register struct walkarg *w; 669 { 670 register struct ifnet *ifp; 671 register struct ifaddr *ifa; 672 struct rt_addrinfo info; 673 struct sockaddr *sa; 674 int len, error = 0; 675 676 bzero((caddr_t)&info, sizeof(info)); 677 for (ifp = ifnet; ifp; ifp = ifp->if_next) { 678 if (w->w_arg && w->w_arg != ifp->if_index) 679 continue; 680 ifa = ifp->if_addrlist; 681 ifpaddr = ifa->ifa_addr; 682 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w); 683 ifpaddr = 0; 684 if (w->w_where && w->w_tmem) { 685 register struct if_msghdr *ifm; 686 687 ifm = (struct if_msghdr *)w->w_tmem; 688 ifm->ifm_index = ifp->if_index; 689 ifm->ifm_flags = ifp->if_flags; 690 ifm->ifm_data = ifp->if_data; 691 ifm->ifm_addrs = info.rti_addrs; 692 if (error = copyout((caddr_t)ifm, w->w_where, len)) 693 return (error); 694 w->w_where += len; 695 } 696 while (ifa = ifa->ifa_next) { 697 if (af && af != ifa->ifa_addr->sa_family) 698 continue; 699 ifaaddr = ifa->ifa_addr; 700 netmask = ifa->ifa_netmask; 701 brdaddr = ifa->ifa_dstaddr; 702 len = rt_msg2(RTM_NEWADDR, &info, 0, w); 703 if (w->w_where && w->w_tmem) { 704 register struct ifa_msghdr *ifam; 705 706 ifam = (struct ifa_msghdr *)w->w_tmem; 707 ifam->ifam_index = ifa->ifa_ifp->if_index; 708 ifam->ifam_flags = ifa->ifa_flags; 709 ifam->ifam_metric = ifa->ifa_metric; 710 ifam->ifam_addrs = info.rti_addrs; 711 if (error = copyout(w->w_tmem, w->w_where, len)) 712 return (error); 713 w->w_where += len; 714 } 715 } 716 ifaaddr = netmask = brdaddr = 0; 717 } 718 return (0); 719 } 720 721 kinfo_rtable(op, where, given, arg, needed) 722 int op, arg; 723 caddr_t where; 724 int *given, *needed; 725 { 726 register struct radix_node_head *rnh; 727 int i, s, error = EINVAL; 728 u_char af = ki_af(op); 729 struct walkarg w; 730 731 Bzero(&w, sizeof(w)); 732 if ((w.w_where = where) && given) 733 w.w_given = *given; 734 w.w_needed = 0 - w.w_given; 735 w.w_arg = arg; 736 w.w_op = op = ki_op(op); 737 738 s = splnet(); 739 switch (op) { 740 741 case KINFO_RT_DUMP: 742 case KINFO_RT_FLAGS: 743 for (i = 1; i <= AF_MAX; i++) 744 if ((rnh = rt_tables[i]) && (af == 0 || af == i) && 745 (error = rnh->rnh_walk(rnh->rnh_treetop, 746 rt_dumpentry, &w))) 747 break; 748 break; 749 750 case KINFO_RT_IFLIST: 751 error = kinfo_iflist(af, &w); 752 } 753 splx(s); 754 if (w.w_tmem) 755 free(w.w_tmem, M_RTABLE); 756 w.w_needed += w.w_given; 757 if (where && given) 758 *given = w.w_where - where; 759 else 760 w.w_needed = (11 * w.w_needed) / 10; 761 *needed = w.w_needed; 762 return (error); 763 } 764 765 /* 766 * Definitions of protocols supported in the ROUTE domain. 767 */ 768 769 int raw_init(),raw_usrreq(),raw_input(),raw_ctlinput(); 770 extern struct domain routedomain; /* or at least forward */ 771 772 struct protosw routesw[] = { 773 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR, 774 raw_input, route_output, raw_ctlinput, 0, 775 route_usrreq, 776 raw_init, 0, 0, 0, 777 } 778 }; 779 780 int unp_externalize(), unp_dispose(); 781 782 struct domain routedomain = 783 { PF_ROUTE, "route", 0, 0, 0, 784 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] }; 785