1 /* 2 * Copyright (c) 1988, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)rtsock.c 8.5 (Berkeley) 11/02/94 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/if.h> 20 #include <net/route.h> 21 #include <net/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 struct mbuf * 33 rt_msg1 __P((int, struct rt_addrinfo *)); 34 static int rt_msg2 __P((int, 35 struct rt_addrinfo *, caddr_t, struct walkarg *)); 36 static void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *)); 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 int 49 route_usrreq(so, req, m, nam, control) 50 register struct socket *so; 51 int req; 52 struct mbuf *m, *nam, *control; 53 { 54 register int error = 0; 55 register struct rawcb *rp = sotorawcb(so); 56 int s; 57 58 if (req == PRU_ATTACH) { 59 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); 60 if (so->so_pcb = (caddr_t)rp) 61 bzero(so->so_pcb, sizeof(*rp)); 62 63 } 64 if (req == PRU_DETACH && rp) { 65 int af = rp->rcb_proto.sp_protocol; 66 if (af == AF_INET) 67 route_cb.ip_count--; 68 else if (af == AF_NS) 69 route_cb.ns_count--; 70 else if (af == AF_ISO) 71 route_cb.iso_count--; 72 route_cb.any_count--; 73 } 74 s = splnet(); 75 error = raw_usrreq(so, req, m, nam, control); 76 rp = sotorawcb(so); 77 if (req == PRU_ATTACH && rp) { 78 int af = rp->rcb_proto.sp_protocol; 79 if (error) { 80 free((caddr_t)rp, M_PCB); 81 splx(s); 82 return (error); 83 } 84 if (af == AF_INET) 85 route_cb.ip_count++; 86 else if (af == AF_NS) 87 route_cb.ns_count++; 88 else if (af == AF_ISO) 89 route_cb.iso_count++; 90 rp->rcb_faddr = &route_src; 91 route_cb.any_count++; 92 soisconnected(so); 93 so->so_options |= SO_USELOOPBACK; 94 } 95 splx(s); 96 return (error); 97 } 98 99 /*ARGSUSED*/ 100 int 101 route_output(m, so) 102 register struct mbuf *m; 103 struct socket *so; 104 { 105 register struct rt_msghdr *rtm = 0; 106 register struct rtentry *rt = 0; 107 struct rtentry *saved_nrt = 0; 108 struct radix_node_head *rnh; 109 struct rt_addrinfo info; 110 int len, error = 0; 111 struct ifnet *ifp = 0; 112 struct ifaddr *ifa = 0; 113 114 #define senderr(e) { error = e; goto flush;} 115 if (m == 0 || ((m->m_len < sizeof(long)) && 116 (m = m_pullup(m, sizeof(long))) == 0)) 117 return (ENOBUFS); 118 if ((m->m_flags & M_PKTHDR) == 0) 119 panic("route_output"); 120 len = m->m_pkthdr.len; 121 if (len < sizeof(*rtm) || 122 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 123 dst = 0; 124 senderr(EINVAL); 125 } 126 R_Malloc(rtm, struct rt_msghdr *, len); 127 if (rtm == 0) { 128 dst = 0; 129 senderr(ENOBUFS); 130 } 131 m_copydata(m, 0, len, (caddr_t)rtm); 132 if (rtm->rtm_version != RTM_VERSION) { 133 dst = 0; 134 senderr(EPROTONOSUPPORT); 135 } 136 rtm->rtm_pid = curproc->p_pid; 137 info.rti_addrs = rtm->rtm_addrs; 138 rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info); 139 if (dst == 0) 140 senderr(EINVAL); 141 if (genmask) { 142 struct radix_node *t; 143 t = rn_addmask((caddr_t)genmask, 0, 1); 144 if (t && Bcmp(genmask, t->rn_key, *(u_char *)genmask) == 0) 145 genmask = (struct sockaddr *)(t->rn_key); 146 else 147 senderr(ENOBUFS); 148 } 149 switch (rtm->rtm_type) { 150 151 case RTM_ADD: 152 if (gate == 0) 153 senderr(EINVAL); 154 error = rtrequest(RTM_ADD, dst, gate, netmask, 155 rtm->rtm_flags, &saved_nrt); 156 if (error == 0 && saved_nrt) { 157 rt_setmetrics(rtm->rtm_inits, 158 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 159 saved_nrt->rt_refcnt--; 160 saved_nrt->rt_genmask = genmask; 161 } 162 break; 163 164 case RTM_DELETE: 165 error = rtrequest(RTM_DELETE, dst, gate, netmask, 166 rtm->rtm_flags, &saved_nrt); 167 if (error == 0) { 168 if ((rt = saved_nrt)->rt_refcnt <= 0) 169 rt->rt_refcnt++; 170 goto report; 171 } 172 break; 173 174 case RTM_GET: 175 case RTM_CHANGE: 176 case RTM_LOCK: 177 if ((rnh = rt_tables[dst->sa_family]) == 0) { 178 senderr(EAFNOSUPPORT); 179 } else if (rt = (struct rtentry *) 180 rnh->rnh_lookup(dst, netmask, rnh)) 181 rt->rt_refcnt++; 182 else 183 senderr(ESRCH); 184 switch(rtm->rtm_type) { 185 186 case RTM_GET: 187 report: 188 dst = rt_key(rt); 189 gate = rt->rt_gateway; 190 netmask = rt_mask(rt); 191 genmask = rt->rt_genmask; 192 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 193 if (ifp = rt->rt_ifp) { 194 ifpaddr = ifp->if_addrlist->ifa_addr; 195 ifaaddr = rt->rt_ifa->ifa_addr; 196 rtm->rtm_index = ifp->if_index; 197 } else { 198 ifpaddr = 0; 199 ifaaddr = 0; 200 } 201 } 202 len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0, 203 (struct walkarg *)0); 204 if (len > rtm->rtm_msglen) { 205 struct rt_msghdr *new_rtm; 206 R_Malloc(new_rtm, struct rt_msghdr *, len); 207 if (new_rtm == 0) 208 senderr(ENOBUFS); 209 Bcopy(rtm, new_rtm, rtm->rtm_msglen); 210 Free(rtm); rtm = new_rtm; 211 } 212 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, 213 (struct walkarg *)0); 214 rtm->rtm_flags = rt->rt_flags; 215 rtm->rtm_rmx = rt->rt_rmx; 216 rtm->rtm_addrs = info.rti_addrs; 217 break; 218 219 case RTM_CHANGE: 220 if (gate && rt_setgate(rt, rt_key(rt), gate)) 221 senderr(EDQUOT); 222 /* new gateway could require new ifaddr, ifp; 223 flags may also be different; ifp may be specified 224 by ll sockaddr when protocol address is ambiguous */ 225 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && 226 (ifp = ifa->ifa_ifp)) 227 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, 228 ifp); 229 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || 230 (ifa = ifa_ifwithroute(rt->rt_flags, 231 rt_key(rt), gate))) 232 ifp = ifa->ifa_ifp; 233 if (ifa) { 234 register struct ifaddr *oifa = rt->rt_ifa; 235 if (oifa != ifa) { 236 if (oifa && oifa->ifa_rtrequest) 237 oifa->ifa_rtrequest(RTM_DELETE, 238 rt, gate); 239 IFAFREE(rt->rt_ifa); 240 rt->rt_ifa = ifa; 241 ifa->ifa_refcnt++; 242 rt->rt_ifp = ifp; 243 } 244 } 245 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 246 &rt->rt_rmx); 247 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 248 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, gate); 249 if (genmask) 250 rt->rt_genmask = genmask; 251 /* 252 * Fall into 253 */ 254 case RTM_LOCK: 255 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 256 rt->rt_rmx.rmx_locks |= 257 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 258 break; 259 } 260 break; 261 262 default: 263 senderr(EOPNOTSUPP); 264 } 265 266 flush: 267 if (rtm) { 268 if (error) 269 rtm->rtm_errno = error; 270 else 271 rtm->rtm_flags |= RTF_DONE; 272 } 273 if (rt) 274 rtfree(rt); 275 { 276 register struct rawcb *rp = 0; 277 /* 278 * Check to see if we don't want our own messages. 279 */ 280 if ((so->so_options & SO_USELOOPBACK) == 0) { 281 if (route_cb.any_count <= 1) { 282 if (rtm) 283 Free(rtm); 284 m_freem(m); 285 return (error); 286 } 287 /* There is another listener, so construct message */ 288 rp = sotorawcb(so); 289 } 290 if (rtm) { 291 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 292 Free(rtm); 293 } 294 if (rp) 295 rp->rcb_proto.sp_family = 0; /* Avoid us */ 296 if (dst) 297 route_proto.sp_protocol = dst->sa_family; 298 raw_input(m, &route_proto, &route_src, &route_dst); 299 if (rp) 300 rp->rcb_proto.sp_family = PF_ROUTE; 301 } 302 return (error); 303 } 304 305 void 306 rt_setmetrics(which, in, out) 307 u_long which; 308 register struct rt_metrics *in, *out; 309 { 310 #define metric(f, e) if (which & (f)) out->e = in->e; 311 metric(RTV_RPIPE, rmx_recvpipe); 312 metric(RTV_SPIPE, rmx_sendpipe); 313 metric(RTV_SSTHRESH, rmx_ssthresh); 314 metric(RTV_RTT, rmx_rtt); 315 metric(RTV_RTTVAR, rmx_rttvar); 316 metric(RTV_HOPCOUNT, rmx_hopcount); 317 metric(RTV_MTU, rmx_mtu); 318 metric(RTV_EXPIRE, rmx_expire); 319 #undef metric 320 } 321 322 #define ROUNDUP(a) \ 323 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 324 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 325 326 static void 327 rt_xaddrs(cp, cplim, rtinfo) 328 register caddr_t cp, cplim; 329 register struct rt_addrinfo *rtinfo; 330 { 331 register struct sockaddr *sa; 332 register int i; 333 334 bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info)); 335 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 336 if ((rtinfo->rti_addrs & (1 << i)) == 0) 337 continue; 338 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; 339 ADVANCE(cp, sa); 340 } 341 } 342 343 /* 344 * Copy data from a buffer back into the indicated mbuf chain, 345 * starting "off" bytes from the beginning, extending the mbuf 346 * chain if necessary. 347 */ 348 void 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 register int mlen; 356 register struct mbuf *m = m0, *n; 357 int totlen = 0; 358 359 if (m0 == 0) 360 return; 361 while (off > (mlen = m->m_len)) { 362 off -= mlen; 363 totlen += mlen; 364 if (m->m_next == 0) { 365 n = m_getclr(M_DONTWAIT, m->m_type); 366 if (n == 0) 367 goto out; 368 n->m_len = min(MLEN, len + off); 369 m->m_next = n; 370 } 371 m = m->m_next; 372 } 373 while (len > 0) { 374 mlen = min (m->m_len - off, len); 375 bcopy(cp, off + mtod(m, caddr_t), (unsigned)mlen); 376 cp += mlen; 377 len -= mlen; 378 mlen += off; 379 off = 0; 380 totlen += mlen; 381 if (len == 0) 382 break; 383 if (m->m_next == 0) { 384 n = m_get(M_DONTWAIT, m->m_type); 385 if (n == 0) 386 break; 387 n->m_len = min(MLEN, len); 388 m->m_next = n; 389 } 390 m = m->m_next; 391 } 392 out: if (((m = m0)->m_flags & M_PKTHDR) && (m->m_pkthdr.len < totlen)) 393 m->m_pkthdr.len = totlen; 394 } 395 396 static struct mbuf * 397 rt_msg1(type, rtinfo) 398 int type; 399 register struct rt_addrinfo *rtinfo; 400 { 401 register struct rt_msghdr *rtm; 402 register struct mbuf *m; 403 register int i; 404 register struct sockaddr *sa; 405 int len, dlen; 406 407 m = m_gethdr(M_DONTWAIT, MT_DATA); 408 if (m == 0) 409 return (m); 410 switch (type) { 411 412 case RTM_DELADDR: 413 case RTM_NEWADDR: 414 len = sizeof(struct ifa_msghdr); 415 break; 416 417 case RTM_IFINFO: 418 len = sizeof(struct if_msghdr); 419 break; 420 421 default: 422 len = sizeof(struct rt_msghdr); 423 } 424 if (len > MHLEN) 425 panic("rt_msg1"); 426 m->m_pkthdr.len = m->m_len = len; 427 m->m_pkthdr.rcvif = 0; 428 rtm = mtod(m, struct rt_msghdr *); 429 bzero((caddr_t)rtm, len); 430 for (i = 0; i < RTAX_MAX; i++) { 431 if ((sa = rtinfo->rti_info[i]) == NULL) 432 continue; 433 rtinfo->rti_addrs |= (1 << i); 434 dlen = ROUNDUP(sa->sa_len); 435 m_copyback(m, len, dlen, (caddr_t)sa); 436 len += dlen; 437 } 438 if (m->m_pkthdr.len != len) { 439 m_freem(m); 440 return (NULL); 441 } 442 rtm->rtm_msglen = len; 443 rtm->rtm_version = RTM_VERSION; 444 rtm->rtm_type = type; 445 return (m); 446 } 447 448 static int 449 rt_msg2(type, rtinfo, cp, w) 450 int type; 451 register struct rt_addrinfo *rtinfo; 452 caddr_t cp; 453 struct walkarg *w; 454 { 455 register int i; 456 int len, dlen, second_time = 0; 457 caddr_t cp0; 458 459 rtinfo->rti_addrs = 0; 460 again: 461 switch (type) { 462 463 case RTM_DELADDR: 464 case RTM_NEWADDR: 465 len = sizeof(struct ifa_msghdr); 466 break; 467 468 case RTM_IFINFO: 469 len = sizeof(struct if_msghdr); 470 break; 471 472 default: 473 len = sizeof(struct rt_msghdr); 474 } 475 if (cp0 = cp) 476 cp += len; 477 for (i = 0; i < RTAX_MAX; i++) { 478 register struct sockaddr *sa; 479 480 if ((sa = rtinfo->rti_info[i]) == 0) 481 continue; 482 rtinfo->rti_addrs |= (1 << i); 483 dlen = ROUNDUP(sa->sa_len); 484 if (cp) { 485 bcopy((caddr_t)sa, cp, (unsigned)dlen); 486 cp += dlen; 487 } 488 len += dlen; 489 } 490 if (cp == 0 && w != NULL && !second_time) { 491 register struct walkarg *rw = w; 492 493 rw->w_needed += len; 494 if (rw->w_needed <= 0 && rw->w_where) { 495 if (rw->w_tmemsize < len) { 496 if (rw->w_tmem) 497 free(rw->w_tmem, M_RTABLE); 498 if (rw->w_tmem = (caddr_t) 499 malloc(len, M_RTABLE, M_NOWAIT)) 500 rw->w_tmemsize = len; 501 } 502 if (rw->w_tmem) { 503 cp = rw->w_tmem; 504 second_time = 1; 505 goto again; 506 } else 507 rw->w_where = 0; 508 } 509 } 510 if (cp) { 511 register struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 512 513 rtm->rtm_version = RTM_VERSION; 514 rtm->rtm_type = type; 515 rtm->rtm_msglen = len; 516 } 517 return (len); 518 } 519 520 /* 521 * This routine is called to generate a message from the routing 522 * socket indicating that a redirect has occured, a routing lookup 523 * has failed, or that a protocol has detected timeouts to a particular 524 * destination. 525 */ 526 void 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 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 534 535 if (route_cb.any_count == 0) 536 return; 537 m = rt_msg1(type, rtinfo); 538 if (m == 0) 539 return; 540 rtm = mtod(m, struct rt_msghdr *); 541 rtm->rtm_flags = RTF_DONE | flags; 542 rtm->rtm_errno = error; 543 rtm->rtm_addrs = rtinfo->rti_addrs; 544 route_proto.sp_protocol = sa ? sa->sa_family : 0; 545 raw_input(m, &route_proto, &route_src, &route_dst); 546 } 547 548 /* 549 * This routine is called to generate a message from the routing 550 * socket indicating that the status of a network interface has changed. 551 */ 552 void 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 void 584 rt_newaddrmsg(cmd, ifa, error, rt) 585 int cmd, error; 586 register struct ifaddr *ifa; 587 register struct rtentry *rt; 588 { 589 struct rt_addrinfo info; 590 struct sockaddr *sa; 591 int pass; 592 struct mbuf *m; 593 struct ifnet *ifp = ifa->ifa_ifp; 594 595 if (route_cb.any_count == 0) 596 return; 597 for (pass = 1; pass < 3; pass++) { 598 bzero((caddr_t)&info, sizeof(info)); 599 if ((cmd == RTM_ADD && pass == 1) || 600 (cmd == RTM_DELETE && pass == 2)) { 601 register struct ifa_msghdr *ifam; 602 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 603 604 ifaaddr = sa = ifa->ifa_addr; 605 ifpaddr = ifp->if_addrlist->ifa_addr; 606 netmask = ifa->ifa_netmask; 607 brdaddr = ifa->ifa_dstaddr; 608 if ((m = rt_msg1(ncmd, &info)) == NULL) 609 continue; 610 ifam = mtod(m, struct ifa_msghdr *); 611 ifam->ifam_index = ifp->if_index; 612 ifam->ifam_metric = ifa->ifa_metric; 613 ifam->ifam_flags = ifa->ifa_flags; 614 ifam->ifam_addrs = info.rti_addrs; 615 } 616 if ((cmd == RTM_ADD && pass == 2) || 617 (cmd == RTM_DELETE && pass == 1)) { 618 register struct rt_msghdr *rtm; 619 620 if (rt == 0) 621 continue; 622 netmask = rt_mask(rt); 623 dst = sa = rt_key(rt); 624 gate = rt->rt_gateway; 625 if ((m = rt_msg1(cmd, &info)) == NULL) 626 continue; 627 rtm = mtod(m, struct rt_msghdr *); 628 rtm->rtm_index = ifp->if_index; 629 rtm->rtm_flags |= rt->rt_flags; 630 rtm->rtm_errno = error; 631 rtm->rtm_addrs = info.rti_addrs; 632 } 633 route_proto.sp_protocol = sa ? sa->sa_family : 0; 634 raw_input(m, &route_proto, &route_src, &route_dst); 635 } 636 } 637 638 /* 639 * This is used in dumping the kernel table via sysctl(). 640 */ 641 int 642 sysctl_dumpentry(rn, w) 643 struct radix_node *rn; 644 register struct walkarg *w; 645 { 646 register struct rtentry *rt = (struct rtentry *)rn; 647 int error = 0, size; 648 struct rt_addrinfo info; 649 650 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 651 return 0; 652 bzero((caddr_t)&info, sizeof(info)); 653 dst = rt_key(rt); 654 gate = rt->rt_gateway; 655 netmask = rt_mask(rt); 656 genmask = rt->rt_genmask; 657 size = rt_msg2(RTM_GET, &info, 0, w); 658 if (w->w_where && w->w_tmem) { 659 register struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 660 661 rtm->rtm_flags = rt->rt_flags; 662 rtm->rtm_use = rt->rt_use; 663 rtm->rtm_rmx = rt->rt_rmx; 664 rtm->rtm_index = rt->rt_ifp->if_index; 665 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 666 rtm->rtm_addrs = info.rti_addrs; 667 if (error = copyout((caddr_t)rtm, w->w_where, size)) 668 w->w_where = NULL; 669 else 670 w->w_where += size; 671 } 672 return (error); 673 } 674 675 int 676 sysctl_iflist(af, w) 677 int af; 678 register struct walkarg *w; 679 { 680 register struct ifnet *ifp; 681 register struct ifaddr *ifa; 682 struct rt_addrinfo info; 683 int len, error = 0; 684 685 bzero((caddr_t)&info, sizeof(info)); 686 for (ifp = ifnet; ifp; ifp = ifp->if_next) { 687 if (w->w_arg && w->w_arg != ifp->if_index) 688 continue; 689 ifa = ifp->if_addrlist; 690 ifpaddr = ifa->ifa_addr; 691 len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, w); 692 ifpaddr = 0; 693 if (w->w_where && w->w_tmem) { 694 register struct if_msghdr *ifm; 695 696 ifm = (struct if_msghdr *)w->w_tmem; 697 ifm->ifm_index = ifp->if_index; 698 ifm->ifm_flags = ifp->if_flags; 699 ifm->ifm_data = ifp->if_data; 700 ifm->ifm_addrs = info.rti_addrs; 701 if (error = copyout((caddr_t)ifm, w->w_where, len)) 702 return (error); 703 w->w_where += len; 704 } 705 while (ifa = ifa->ifa_next) { 706 if (af && af != ifa->ifa_addr->sa_family) 707 continue; 708 ifaaddr = ifa->ifa_addr; 709 netmask = ifa->ifa_netmask; 710 brdaddr = ifa->ifa_dstaddr; 711 len = rt_msg2(RTM_NEWADDR, &info, 0, w); 712 if (w->w_where && w->w_tmem) { 713 register struct ifa_msghdr *ifam; 714 715 ifam = (struct ifa_msghdr *)w->w_tmem; 716 ifam->ifam_index = ifa->ifa_ifp->if_index; 717 ifam->ifam_flags = ifa->ifa_flags; 718 ifam->ifam_metric = ifa->ifa_metric; 719 ifam->ifam_addrs = info.rti_addrs; 720 if (error = copyout(w->w_tmem, w->w_where, len)) 721 return (error); 722 w->w_where += len; 723 } 724 } 725 ifaaddr = netmask = brdaddr = 0; 726 } 727 return (0); 728 } 729 730 int 731 sysctl_rtable(name, namelen, where, given, new, newlen) 732 int *name; 733 int namelen; 734 caddr_t where; 735 size_t *given; 736 caddr_t *new; 737 size_t newlen; 738 { 739 register struct radix_node_head *rnh; 740 int i, s, error = EINVAL; 741 u_char af; 742 struct walkarg w; 743 744 if (new) 745 return (EPERM); 746 if (namelen != 3) 747 return (EINVAL); 748 af = name[0]; 749 Bzero(&w, sizeof(w)); 750 w.w_where = where; 751 w.w_given = *given; 752 w.w_needed = 0 - w.w_given; 753 w.w_op = name[1]; 754 w.w_arg = name[2]; 755 756 s = splnet(); 757 switch (w.w_op) { 758 759 case NET_RT_DUMP: 760 case NET_RT_FLAGS: 761 for (i = 1; i <= AF_MAX; i++) 762 if ((rnh = rt_tables[i]) && (af == 0 || af == i) && 763 (error = rnh->rnh_walktree(rnh, 764 sysctl_dumpentry, &w))) 765 break; 766 break; 767 768 case NET_RT_IFLIST: 769 error = sysctl_iflist(af, &w); 770 } 771 splx(s); 772 if (w.w_tmem) 773 free(w.w_tmem, M_RTABLE); 774 w.w_needed += w.w_given; 775 if (where) { 776 *given = w.w_where - where; 777 if (*given < w.w_needed) 778 return (ENOMEM); 779 } else { 780 *given = (11 * w.w_needed) / 10; 781 } 782 return (error); 783 } 784 785 /* 786 * Definitions of protocols supported in the ROUTE domain. 787 */ 788 789 extern struct domain routedomain; /* or at least forward */ 790 791 struct protosw routesw[] = { 792 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR, 793 raw_input, route_output, raw_ctlinput, 0, 794 route_usrreq, 795 raw_init, 0, 0, 0, 796 sysctl_rtable, 797 } 798 }; 799 800 struct domain routedomain = 801 { PF_ROUTE, "route", route_init, 0, 0, 802 routesw, &routesw[sizeof(routesw)/sizeof(routesw[0])] }; 803