349 return 0; 350} 351 352static int 353rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 354{ 355 356 return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */ 357} 358 359static int 360rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 361{ 362 363 return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */ 364} 365 366/* pru_connect2 is EOPNOTSUPP */ 367/* pru_control is EOPNOTSUPP */ 368 369static void 370rts_detach(struct socket *so) 371{ 372 struct rawcb *rp = sotorawcb(so); 373 374 KASSERT(rp != NULL, ("rts_detach: rp == NULL")); 375 376 RTSOCK_LOCK(); 377 switch(rp->rcb_proto.sp_protocol) { 378 case AF_INET: 379 route_cb.ip_count--; 380 break; 381 case AF_INET6: 382 route_cb.ip6_count--; 383 break; 384 case AF_IPX: 385 route_cb.ipx_count--; 386 break; 387 } 388 route_cb.any_count--; 389 RTSOCK_UNLOCK(); 390 raw_usrreqs.pru_detach(so); 391} 392 393static int 394rts_disconnect(struct socket *so) 395{ 396 397 return (raw_usrreqs.pru_disconnect(so)); 398} 399 400/* pru_listen is EOPNOTSUPP */ 401 402static int 403rts_peeraddr(struct socket *so, struct sockaddr **nam) 404{ 405 406 return (raw_usrreqs.pru_peeraddr(so, nam)); 407} 408 409/* pru_rcvd is EOPNOTSUPP */ 410/* pru_rcvoob is EOPNOTSUPP */ 411 412static int 413rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 414 struct mbuf *control, struct thread *td) 415{ 416 417 return (raw_usrreqs.pru_send(so, flags, m, nam, control, td)); 418} 419 420/* pru_sense is null */ 421 422static int 423rts_shutdown(struct socket *so) 424{ 425 426 return (raw_usrreqs.pru_shutdown(so)); 427} 428 429static int 430rts_sockaddr(struct socket *so, struct sockaddr **nam) 431{ 432 433 return (raw_usrreqs.pru_sockaddr(so, nam)); 434} 435 436static struct pr_usrreqs route_usrreqs = { 437 .pru_abort = rts_abort, 438 .pru_attach = rts_attach, 439 .pru_bind = rts_bind, 440 .pru_connect = rts_connect, 441 .pru_detach = rts_detach, 442 .pru_disconnect = rts_disconnect, 443 .pru_peeraddr = rts_peeraddr, 444 .pru_send = rts_send, 445 .pru_shutdown = rts_shutdown, 446 .pru_sockaddr = rts_sockaddr, 447 .pru_close = rts_close, 448}; 449 450#ifndef _SOCKADDR_UNION_DEFINED 451#define _SOCKADDR_UNION_DEFINED 452/* 453 * The union of all possible address formats we handle. 454 */ 455union sockaddr_union { 456 struct sockaddr sa; 457 struct sockaddr_in sin; 458 struct sockaddr_in6 sin6; 459}; 460#endif /* _SOCKADDR_UNION_DEFINED */ 461 462static int 463rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, 464 struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred) 465{ 466 467 /* First, see if the returned address is part of the jail. */ 468 if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) { 469 info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 470 return (0); 471 } 472 473 switch (info->rti_info[RTAX_DST]->sa_family) { 474#ifdef INET 475 case AF_INET: 476 { 477 struct in_addr ia; 478 struct ifaddr *ifa; 479 int found; 480 481 found = 0; 482 /* 483 * Try to find an address on the given outgoing interface 484 * that belongs to the jail. 485 */ 486 IF_ADDR_RLOCK(ifp); 487 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 488 struct sockaddr *sa; 489 sa = ifa->ifa_addr; 490 if (sa->sa_family != AF_INET) 491 continue; 492 ia = ((struct sockaddr_in *)sa)->sin_addr; 493 if (prison_check_ip4(cred, &ia) == 0) { 494 found = 1; 495 break; 496 } 497 } 498 IF_ADDR_RUNLOCK(ifp); 499 if (!found) { 500 /* 501 * As a last resort return the 'default' jail address. 502 */ 503 ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)-> 504 sin_addr; 505 if (prison_get_ip4(cred, &ia) != 0) 506 return (ESRCH); 507 } 508 bzero(&saun->sin, sizeof(struct sockaddr_in)); 509 saun->sin.sin_len = sizeof(struct sockaddr_in); 510 saun->sin.sin_family = AF_INET; 511 saun->sin.sin_addr.s_addr = ia.s_addr; 512 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin; 513 break; 514 } 515#endif 516#ifdef INET6 517 case AF_INET6: 518 { 519 struct in6_addr ia6; 520 struct ifaddr *ifa; 521 int found; 522 523 found = 0; 524 /* 525 * Try to find an address on the given outgoing interface 526 * that belongs to the jail. 527 */ 528 IF_ADDR_RLOCK(ifp); 529 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 530 struct sockaddr *sa; 531 sa = ifa->ifa_addr; 532 if (sa->sa_family != AF_INET6) 533 continue; 534 bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, 535 &ia6, sizeof(struct in6_addr)); 536 if (prison_check_ip6(cred, &ia6) == 0) { 537 found = 1; 538 break; 539 } 540 } 541 IF_ADDR_RUNLOCK(ifp); 542 if (!found) { 543 /* 544 * As a last resort return the 'default' jail address. 545 */ 546 ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)-> 547 sin6_addr; 548 if (prison_get_ip6(cred, &ia6) != 0) 549 return (ESRCH); 550 } 551 bzero(&saun->sin6, sizeof(struct sockaddr_in6)); 552 saun->sin6.sin6_len = sizeof(struct sockaddr_in6); 553 saun->sin6.sin6_family = AF_INET6; 554 bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr)); 555 if (sa6_recoverscope(&saun->sin6) != 0) 556 return (ESRCH); 557 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6; 558 break; 559 } 560#endif 561 default: 562 return (ESRCH); 563 } 564 return (0); 565} 566 567/*ARGSUSED*/ 568static int 569route_output(struct mbuf *m, struct socket *so) 570{ 571#define sa_equal(a1, a2) (bcmp((a1), (a2), (a1)->sa_len) == 0) 572 struct rt_msghdr *rtm = NULL; 573 struct rtentry *rt = NULL; 574 struct radix_node_head *rnh; 575 struct rt_addrinfo info; 576 int len, error = 0; 577 struct ifnet *ifp = NULL; 578 union sockaddr_union saun; 579 sa_family_t saf = AF_UNSPEC; 580 581#define senderr(e) { error = e; goto flush;} 582 if (m == NULL || ((m->m_len < sizeof(long)) && 583 (m = m_pullup(m, sizeof(long))) == NULL)) 584 return (ENOBUFS); 585 if ((m->m_flags & M_PKTHDR) == 0) 586 panic("route_output"); 587 len = m->m_pkthdr.len; 588 if (len < sizeof(*rtm) || 589 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 590 info.rti_info[RTAX_DST] = NULL; 591 senderr(EINVAL); 592 } 593 R_Malloc(rtm, struct rt_msghdr *, len); 594 if (rtm == NULL) { 595 info.rti_info[RTAX_DST] = NULL; 596 senderr(ENOBUFS); 597 } 598 m_copydata(m, 0, len, (caddr_t)rtm); 599 if (rtm->rtm_version != RTM_VERSION) { 600 info.rti_info[RTAX_DST] = NULL; 601 senderr(EPROTONOSUPPORT); 602 } 603 rtm->rtm_pid = curproc->p_pid; 604 bzero(&info, sizeof(info)); 605 info.rti_addrs = rtm->rtm_addrs; 606 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) { 607 info.rti_info[RTAX_DST] = NULL; 608 senderr(EINVAL); 609 } 610 info.rti_flags = rtm->rtm_flags; 611 if (info.rti_info[RTAX_DST] == NULL || 612 info.rti_info[RTAX_DST]->sa_family >= AF_MAX || 613 (info.rti_info[RTAX_GATEWAY] != NULL && 614 info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) 615 senderr(EINVAL); 616 saf = info.rti_info[RTAX_DST]->sa_family; 617 /* 618 * Verify that the caller has the appropriate privilege; RTM_GET 619 * is the only operation the non-superuser is allowed. 620 */ 621 if (rtm->rtm_type != RTM_GET) { 622 error = priv_check(curthread, PRIV_NET_ROUTE); 623 if (error) 624 senderr(error); 625 } 626 627 /* 628 * The given gateway address may be an interface address. 629 * For example, issuing a "route change" command on a route 630 * entry that was created from a tunnel, and the gateway 631 * address given is the local end point. In this case the 632 * RTF_GATEWAY flag must be cleared or the destination will 633 * not be reachable even though there is no error message. 634 */ 635 if (info.rti_info[RTAX_GATEWAY] != NULL && 636 info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) { 637 struct route gw_ro; 638 639 bzero(&gw_ro, sizeof(gw_ro)); 640 gw_ro.ro_dst = *info.rti_info[RTAX_GATEWAY]; 641 rtalloc_ign_fib(&gw_ro, 0, so->so_fibnum); 642 /* 643 * A host route through the loopback interface is 644 * installed for each interface adddress. In pre 8.0 645 * releases the interface address of a PPP link type 646 * is not reachable locally. This behavior is fixed as 647 * part of the new L2/L3 redesign and rewrite work. The 648 * signature of this interface address route is the 649 * AF_LINK sa_family type of the rt_gateway, and the 650 * rt_ifp has the IFF_LOOPBACK flag set. 651 */ 652 if (gw_ro.ro_rt != NULL && 653 gw_ro.ro_rt->rt_gateway->sa_family == AF_LINK && 654 gw_ro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) 655 info.rti_flags &= ~RTF_GATEWAY; 656 if (gw_ro.ro_rt != NULL) 657 RTFREE(gw_ro.ro_rt); 658 } 659 660 switch (rtm->rtm_type) { 661 struct rtentry *saved_nrt; 662 663 case RTM_ADD: 664 if (info.rti_info[RTAX_GATEWAY] == NULL) 665 senderr(EINVAL); 666 saved_nrt = NULL; 667 668 /* support for new ARP code */ 669 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK && 670 (rtm->rtm_flags & RTF_LLDATA) != 0) { 671 error = lla_rt_output(rtm, &info); 672 break; 673 } 674 error = rtrequest1_fib(RTM_ADD, &info, &saved_nrt, 675 so->so_fibnum); 676 if (error == 0 && saved_nrt) { 677 RT_LOCK(saved_nrt); 678 rt_setmetrics(rtm->rtm_inits, 679 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 680 rtm->rtm_index = saved_nrt->rt_ifp->if_index; 681 RT_REMREF(saved_nrt); 682 RT_UNLOCK(saved_nrt); 683 } 684 break; 685 686 case RTM_DELETE: 687 saved_nrt = NULL; 688 /* support for new ARP code */ 689 if (info.rti_info[RTAX_GATEWAY] && 690 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 691 (rtm->rtm_flags & RTF_LLDATA) != 0) { 692 error = lla_rt_output(rtm, &info); 693 break; 694 } 695 error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, 696 so->so_fibnum); 697 if (error == 0) { 698 RT_LOCK(saved_nrt); 699 rt = saved_nrt; 700 goto report; 701 } 702 break; 703 704 case RTM_GET: 705 case RTM_CHANGE: 706 case RTM_LOCK: 707 rnh = rt_tables_get_rnh(so->so_fibnum, 708 info.rti_info[RTAX_DST]->sa_family); 709 if (rnh == NULL) 710 senderr(EAFNOSUPPORT); 711 RADIX_NODE_HEAD_RLOCK(rnh); 712 rt = (struct rtentry *) rnh->rnh_lookup(info.rti_info[RTAX_DST], 713 info.rti_info[RTAX_NETMASK], rnh); 714 if (rt == NULL) { /* XXX looks bogus */ 715 RADIX_NODE_HEAD_RUNLOCK(rnh); 716 senderr(ESRCH); 717 } 718#ifdef RADIX_MPATH 719 /* 720 * for RTM_CHANGE/LOCK, if we got multipath routes, 721 * we require users to specify a matching RTAX_GATEWAY. 722 * 723 * for RTM_GET, gate is optional even with multipath. 724 * if gate == NULL the first match is returned. 725 * (no need to call rt_mpath_matchgate if gate == NULL) 726 */ 727 if (rn_mpath_capable(rnh) && 728 (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) { 729 rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]); 730 if (!rt) { 731 RADIX_NODE_HEAD_RUNLOCK(rnh); 732 senderr(ESRCH); 733 } 734 } 735#endif 736 /* 737 * If performing proxied L2 entry insertion, and 738 * the actual PPP host entry is found, perform 739 * another search to retrieve the prefix route of 740 * the local end point of the PPP link. 741 */ 742 if (rtm->rtm_flags & RTF_ANNOUNCE) { 743 struct sockaddr laddr; 744 745 if (rt->rt_ifp != NULL && 746 rt->rt_ifp->if_type == IFT_PROPVIRTUAL) { 747 struct ifaddr *ifa; 748 749 ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1); 750 if (ifa != NULL) 751 rt_maskedcopy(ifa->ifa_addr, 752 &laddr, 753 ifa->ifa_netmask); 754 } else 755 rt_maskedcopy(rt->rt_ifa->ifa_addr, 756 &laddr, 757 rt->rt_ifa->ifa_netmask); 758 /* 759 * refactor rt and no lock operation necessary 760 */ 761 rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr, rnh); 762 if (rt == NULL) { 763 RADIX_NODE_HEAD_RUNLOCK(rnh); 764 senderr(ESRCH); 765 } 766 } 767 RT_LOCK(rt); 768 RT_ADDREF(rt); 769 RADIX_NODE_HEAD_RUNLOCK(rnh); 770 771 /* 772 * Fix for PR: 82974 773 * 774 * RTM_CHANGE/LOCK need a perfect match, rn_lookup() 775 * returns a perfect match in case a netmask is 776 * specified. For host routes only a longest prefix 777 * match is returned so it is necessary to compare the 778 * existence of the netmask. If both have a netmask 779 * rnh_lookup() did a perfect match and if none of them 780 * have a netmask both are host routes which is also a 781 * perfect match. 782 */ 783 784 if (rtm->rtm_type != RTM_GET && 785 (!rt_mask(rt) != !info.rti_info[RTAX_NETMASK])) { 786 RT_UNLOCK(rt); 787 senderr(ESRCH); 788 } 789 790 switch(rtm->rtm_type) { 791 792 case RTM_GET: 793 report: 794 RT_LOCK_ASSERT(rt); 795 if ((rt->rt_flags & RTF_HOST) == 0 796 ? jailed_without_vnet(curthread->td_ucred) 797 : prison_if(curthread->td_ucred, 798 rt_key(rt)) != 0) { 799 RT_UNLOCK(rt); 800 senderr(ESRCH); 801 } 802 info.rti_info[RTAX_DST] = rt_key(rt); 803 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 804 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 805 info.rti_info[RTAX_GENMASK] = 0; 806 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 807 ifp = rt->rt_ifp; 808 if (ifp) { 809 info.rti_info[RTAX_IFP] = 810 ifp->if_addr->ifa_addr; 811 error = rtm_get_jailed(&info, ifp, rt, 812 &saun, curthread->td_ucred); 813 if (error != 0) { 814 RT_UNLOCK(rt); 815 senderr(error); 816 } 817 if (ifp->if_flags & IFF_POINTOPOINT) 818 info.rti_info[RTAX_BRD] = 819 rt->rt_ifa->ifa_dstaddr; 820 rtm->rtm_index = ifp->if_index; 821 } else { 822 info.rti_info[RTAX_IFP] = NULL; 823 info.rti_info[RTAX_IFA] = NULL; 824 } 825 } else if ((ifp = rt->rt_ifp) != NULL) { 826 rtm->rtm_index = ifp->if_index; 827 } 828 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL); 829 if (len > rtm->rtm_msglen) { 830 struct rt_msghdr *new_rtm; 831 R_Malloc(new_rtm, struct rt_msghdr *, len); 832 if (new_rtm == NULL) { 833 RT_UNLOCK(rt); 834 senderr(ENOBUFS); 835 } 836 bcopy(rtm, new_rtm, rtm->rtm_msglen); 837 Free(rtm); rtm = new_rtm; 838 } 839 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL); 840 rtm->rtm_flags = rt->rt_flags; 841 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 842 rtm->rtm_addrs = info.rti_addrs; 843 break; 844 845 case RTM_CHANGE: 846 /* 847 * New gateway could require new ifaddr, ifp; 848 * flags may also be different; ifp may be specified 849 * by ll sockaddr when protocol address is ambiguous 850 */ 851 if (((rt->rt_flags & RTF_GATEWAY) && 852 info.rti_info[RTAX_GATEWAY] != NULL) || 853 info.rti_info[RTAX_IFP] != NULL || 854 (info.rti_info[RTAX_IFA] != NULL && 855 !sa_equal(info.rti_info[RTAX_IFA], 856 rt->rt_ifa->ifa_addr))) { 857 RT_UNLOCK(rt); 858 RADIX_NODE_HEAD_LOCK(rnh); 859 error = rt_getifa_fib(&info, rt->rt_fibnum); 860 /* 861 * XXXRW: Really we should release this 862 * reference later, but this maintains 863 * historical behavior. 864 */ 865 if (info.rti_ifa != NULL) 866 ifa_free(info.rti_ifa); 867 RADIX_NODE_HEAD_UNLOCK(rnh); 868 if (error != 0) 869 senderr(error); 870 RT_LOCK(rt); 871 } 872 if (info.rti_ifa != NULL && 873 info.rti_ifa != rt->rt_ifa && 874 rt->rt_ifa != NULL && 875 rt->rt_ifa->ifa_rtrequest != NULL) { 876 rt->rt_ifa->ifa_rtrequest(RTM_DELETE, rt, 877 &info); 878 ifa_free(rt->rt_ifa); 879 } 880 if (info.rti_info[RTAX_GATEWAY] != NULL) { 881 RT_UNLOCK(rt); 882 RADIX_NODE_HEAD_LOCK(rnh); 883 RT_LOCK(rt); 884 885 error = rt_setgate(rt, rt_key(rt), 886 info.rti_info[RTAX_GATEWAY]); 887 RADIX_NODE_HEAD_UNLOCK(rnh); 888 if (error != 0) { 889 RT_UNLOCK(rt); 890 senderr(error); 891 } 892 rt->rt_flags |= (RTF_GATEWAY & info.rti_flags); 893 } 894 if (info.rti_ifa != NULL && 895 info.rti_ifa != rt->rt_ifa) { 896 ifa_ref(info.rti_ifa); 897 rt->rt_ifa = info.rti_ifa; 898 rt->rt_ifp = info.rti_ifp; 899 } 900 /* Allow some flags to be toggled on change. */ 901 rt->rt_flags = (rt->rt_flags & ~RTF_FMASK) | 902 (rtm->rtm_flags & RTF_FMASK); 903 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 904 &rt->rt_rmx); 905 rtm->rtm_index = rt->rt_ifp->if_index; 906 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 907 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 908 /* FALLTHROUGH */ 909 case RTM_LOCK: 910 /* We don't support locks anymore */ 911 break; 912 } 913 RT_UNLOCK(rt); 914 break; 915 916 default: 917 senderr(EOPNOTSUPP); 918 } 919 920flush: 921 if (rtm) { 922 if (error) 923 rtm->rtm_errno = error; 924 else 925 rtm->rtm_flags |= RTF_DONE; 926 } 927 if (rt) /* XXX can this be true? */ 928 RTFREE(rt); 929 { 930 struct rawcb *rp = NULL; 931 /* 932 * Check to see if we don't want our own messages. 933 */ 934 if ((so->so_options & SO_USELOOPBACK) == 0) { 935 if (route_cb.any_count <= 1) { 936 if (rtm) 937 Free(rtm); 938 m_freem(m); 939 return (error); 940 } 941 /* There is another listener, so construct message */ 942 rp = sotorawcb(so); 943 } 944 if (rtm) { 945 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 946 if (m->m_pkthdr.len < rtm->rtm_msglen) { 947 m_freem(m); 948 m = NULL; 949 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 950 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 951 } 952 if (m) { 953 M_SETFIB(m, so->so_fibnum); 954 m->m_flags |= RTS_FILTER_FIB; 955 if (rp) { 956 /* 957 * XXX insure we don't get a copy by 958 * invalidating our protocol 959 */ 960 unsigned short family = rp->rcb_proto.sp_family; 961 rp->rcb_proto.sp_family = 0; 962 rt_dispatch(m, saf); 963 rp->rcb_proto.sp_family = family; 964 } else 965 rt_dispatch(m, saf); 966 } 967 /* info.rti_info[RTAX_DST] (used above) can point inside of rtm */ 968 if (rtm) 969 Free(rtm); 970 } 971 return (error); 972#undef sa_equal 973} 974 975static void 976rt_setmetrics(u_long which, const struct rt_metrics *in, 977 struct rt_metrics_lite *out) 978{ 979#define metric(f, e) if (which & (f)) out->e = in->e; 980 /* 981 * Only these are stored in the routing entry since introduction 982 * of tcp hostcache. The rest is ignored. 983 */ 984 metric(RTV_MTU, rmx_mtu); 985 metric(RTV_WEIGHT, rmx_weight); 986 /* Userland -> kernel timebase conversion. */ 987 if (which & RTV_EXPIRE) 988 out->rmx_expire = in->rmx_expire ? 989 in->rmx_expire - time_second + time_uptime : 0; 990#undef metric 991} 992 993static void 994rt_getmetrics(const struct rt_metrics_lite *in, struct rt_metrics *out) 995{ 996#define metric(e) out->e = in->e; 997 bzero(out, sizeof(*out)); 998 metric(rmx_mtu); 999 metric(rmx_weight); 1000 /* Kernel -> userland timebase conversion. */ 1001 out->rmx_expire = in->rmx_expire ? 1002 in->rmx_expire - time_uptime + time_second : 0; 1003#undef metric 1004} 1005 1006/* 1007 * Extract the addresses of the passed sockaddrs. 1008 * Do a little sanity checking so as to avoid bad memory references. 1009 * This data is derived straight from userland. 1010 */ 1011static int 1012rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) 1013{ 1014 struct sockaddr *sa; 1015 int i; 1016 1017 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 1018 if ((rtinfo->rti_addrs & (1 << i)) == 0) 1019 continue; 1020 sa = (struct sockaddr *)cp; 1021 /* 1022 * It won't fit. 1023 */ 1024 if (cp + sa->sa_len > cplim) 1025 return (EINVAL); 1026 /* 1027 * there are no more.. quit now 1028 * If there are more bits, they are in error. 1029 * I've seen this. route(1) can evidently generate these. 1030 * This causes kernel to core dump. 1031 * for compatibility, If we see this, point to a safe address. 1032 */ 1033 if (sa->sa_len == 0) { 1034 rtinfo->rti_info[i] = &sa_zero; 1035 return (0); /* should be EINVAL but for compat */ 1036 } 1037 /* accept it */ 1038 rtinfo->rti_info[i] = sa; 1039 cp += SA_SIZE(sa); 1040 } 1041 return (0); 1042} 1043 1044/* 1045 * Used by the routing socket. 1046 */ 1047static struct mbuf * 1048rt_msg1(int type, struct rt_addrinfo *rtinfo) 1049{ 1050 struct rt_msghdr *rtm; 1051 struct mbuf *m; 1052 int i; 1053 struct sockaddr *sa; 1054 int len, dlen; 1055 1056 switch (type) { 1057 1058 case RTM_DELADDR: 1059 case RTM_NEWADDR: 1060 len = sizeof(struct ifa_msghdr); 1061 break; 1062 1063 case RTM_DELMADDR: 1064 case RTM_NEWMADDR: 1065 len = sizeof(struct ifma_msghdr); 1066 break; 1067 1068 case RTM_IFINFO: 1069 len = sizeof(struct if_msghdr); 1070 break; 1071 1072 case RTM_IFANNOUNCE: 1073 case RTM_IEEE80211: 1074 len = sizeof(struct if_announcemsghdr); 1075 break; 1076 1077 default: 1078 len = sizeof(struct rt_msghdr); 1079 } 1080 if (len > MCLBYTES) 1081 panic("rt_msg1"); 1082 m = m_gethdr(M_DONTWAIT, MT_DATA); 1083 if (m && len > MHLEN) { 1084 MCLGET(m, M_DONTWAIT); 1085 if ((m->m_flags & M_EXT) == 0) { 1086 m_free(m); 1087 m = NULL; 1088 } 1089 } 1090 if (m == NULL) 1091 return (m); 1092 m->m_pkthdr.len = m->m_len = len; 1093 m->m_pkthdr.rcvif = NULL; 1094 rtm = mtod(m, struct rt_msghdr *); 1095 bzero((caddr_t)rtm, len); 1096 for (i = 0; i < RTAX_MAX; i++) { 1097 if ((sa = rtinfo->rti_info[i]) == NULL) 1098 continue; 1099 rtinfo->rti_addrs |= (1 << i); 1100 dlen = SA_SIZE(sa); 1101 m_copyback(m, len, dlen, (caddr_t)sa); 1102 len += dlen; 1103 } 1104 if (m->m_pkthdr.len != len) { 1105 m_freem(m); 1106 return (NULL); 1107 } 1108 rtm->rtm_msglen = len; 1109 rtm->rtm_version = RTM_VERSION; 1110 rtm->rtm_type = type; 1111 return (m); 1112} 1113 1114/* 1115 * Used by the sysctl code and routing socket. 1116 */ 1117static int 1118rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w) 1119{ 1120 int i; 1121 int len, dlen, second_time = 0; 1122 caddr_t cp0; 1123 1124 rtinfo->rti_addrs = 0; 1125again: 1126 switch (type) { 1127 1128 case RTM_DELADDR: 1129 case RTM_NEWADDR: 1130 if (w != NULL && w->w_op == NET_RT_IFLISTL) { 1131#ifdef COMPAT_FREEBSD32 1132 if (w->w_req->flags & SCTL_MASK32) 1133 len = sizeof(struct ifa_msghdrl32); 1134 else 1135#endif 1136 len = sizeof(struct ifa_msghdrl); 1137 } else 1138 len = sizeof(struct ifa_msghdr); 1139 break; 1140 1141 case RTM_IFINFO: 1142#ifdef COMPAT_FREEBSD32 1143 if (w != NULL && w->w_req->flags & SCTL_MASK32) { 1144 if (w->w_op == NET_RT_IFLISTL) 1145 len = sizeof(struct if_msghdrl32); 1146 else 1147 len = sizeof(struct if_msghdr32); 1148 break; 1149 } 1150#endif 1151 if (w != NULL && w->w_op == NET_RT_IFLISTL) 1152 len = sizeof(struct if_msghdrl); 1153 else 1154 len = sizeof(struct if_msghdr); 1155 break; 1156 1157 case RTM_NEWMADDR: 1158 len = sizeof(struct ifma_msghdr); 1159 break; 1160 1161 default: 1162 len = sizeof(struct rt_msghdr); 1163 } 1164 cp0 = cp; 1165 if (cp0) 1166 cp += len; 1167 for (i = 0; i < RTAX_MAX; i++) { 1168 struct sockaddr *sa; 1169 1170 if ((sa = rtinfo->rti_info[i]) == NULL) 1171 continue; 1172 rtinfo->rti_addrs |= (1 << i); 1173 dlen = SA_SIZE(sa); 1174 if (cp) { 1175 bcopy((caddr_t)sa, cp, (unsigned)dlen); 1176 cp += dlen; 1177 } 1178 len += dlen; 1179 } 1180 len = ALIGN(len); 1181 if (cp == NULL && w != NULL && !second_time) { 1182 struct walkarg *rw = w; 1183 1184 if (rw->w_req) { 1185 if (rw->w_tmemsize < len) { 1186 if (rw->w_tmem) 1187 free(rw->w_tmem, M_RTABLE); 1188 rw->w_tmem = (caddr_t) 1189 malloc(len, M_RTABLE, M_NOWAIT); 1190 if (rw->w_tmem) 1191 rw->w_tmemsize = len; 1192 } 1193 if (rw->w_tmem) { 1194 cp = rw->w_tmem; 1195 second_time = 1; 1196 goto again; 1197 } 1198 } 1199 } 1200 if (cp) { 1201 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 1202 1203 rtm->rtm_version = RTM_VERSION; 1204 rtm->rtm_type = type; 1205 rtm->rtm_msglen = len; 1206 } 1207 return (len); 1208} 1209 1210/* 1211 * This routine is called to generate a message from the routing 1212 * socket indicating that a redirect has occured, a routing lookup 1213 * has failed, or that a protocol has detected timeouts to a particular 1214 * destination. 1215 */ 1216void 1217rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, 1218 int fibnum) 1219{ 1220 struct rt_msghdr *rtm; 1221 struct mbuf *m; 1222 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1223 1224 if (route_cb.any_count == 0) 1225 return; 1226 m = rt_msg1(type, rtinfo); 1227 if (m == NULL) 1228 return; 1229 1230 if (fibnum != RTS_ALLFIBS) { 1231 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " 1232 "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); 1233 M_SETFIB(m, fibnum); 1234 m->m_flags |= RTS_FILTER_FIB; 1235 } 1236 1237 rtm = mtod(m, struct rt_msghdr *); 1238 rtm->rtm_flags = RTF_DONE | flags; 1239 rtm->rtm_errno = error; 1240 rtm->rtm_addrs = rtinfo->rti_addrs; 1241 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1242} 1243 1244void 1245rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 1246{ 1247 1248 rt_missmsg_fib(type, rtinfo, flags, error, RTS_ALLFIBS); 1249} 1250 1251/* 1252 * This routine is called to generate a message from the routing 1253 * socket indicating that the status of a network interface has changed. 1254 */ 1255void 1256rt_ifmsg(struct ifnet *ifp) 1257{ 1258 struct if_msghdr *ifm; 1259 struct mbuf *m; 1260 struct rt_addrinfo info; 1261 1262 if (route_cb.any_count == 0) 1263 return; 1264 bzero((caddr_t)&info, sizeof(info)); 1265 m = rt_msg1(RTM_IFINFO, &info); 1266 if (m == NULL) 1267 return; 1268 ifm = mtod(m, struct if_msghdr *); 1269 ifm->ifm_index = ifp->if_index; 1270 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1271 ifm->ifm_data = ifp->if_data; 1272 ifm->ifm_addrs = 0; 1273 rt_dispatch(m, AF_UNSPEC); 1274} 1275 1276/* 1277 * This is called to generate messages from the routing socket 1278 * indicating a network interface has had addresses associated with it. 1279 * if we ever reverse the logic and replace messages TO the routing 1280 * socket indicate a request to configure interfaces, then it will 1281 * be unnecessary as the routing socket will automatically generate 1282 * copies of it. 1283 */ 1284void 1285rt_newaddrmsg_fib(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt, 1286 int fibnum) 1287{ 1288 struct rt_addrinfo info; 1289 struct sockaddr *sa = NULL; 1290 int pass; 1291 struct mbuf *m = NULL; 1292 struct ifnet *ifp = ifa->ifa_ifp; 1293 1294 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 1295 ("unexpected cmd %u", cmd)); 1296#if defined(INET) || defined(INET6) 1297#ifdef SCTP 1298 /* 1299 * notify the SCTP stack 1300 * this will only get called when an address is added/deleted 1301 * XXX pass the ifaddr struct instead if ifa->ifa_addr... 1302 */ 1303 sctp_addr_change(ifa, cmd); 1304#endif /* SCTP */ 1305#endif 1306 if (route_cb.any_count == 0) 1307 return; 1308 for (pass = 1; pass < 3; pass++) { 1309 bzero((caddr_t)&info, sizeof(info)); 1310 if ((cmd == RTM_ADD && pass == 1) || 1311 (cmd == RTM_DELETE && pass == 2)) { 1312 struct ifa_msghdr *ifam; 1313 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 1314 1315 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1316 info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; 1317 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1318 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1319 if ((m = rt_msg1(ncmd, &info)) == NULL) 1320 continue; 1321 ifam = mtod(m, struct ifa_msghdr *); 1322 ifam->ifam_index = ifp->if_index; 1323 ifam->ifam_metric = ifa->ifa_metric; 1324 ifam->ifam_flags = ifa->ifa_flags; 1325 ifam->ifam_addrs = info.rti_addrs; 1326 } 1327 if ((cmd == RTM_ADD && pass == 2) || 1328 (cmd == RTM_DELETE && pass == 1)) { 1329 struct rt_msghdr *rtm; 1330 1331 if (rt == NULL) 1332 continue; 1333 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1334 info.rti_info[RTAX_DST] = sa = rt_key(rt); 1335 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1336 if ((m = rt_msg1(cmd, &info)) == NULL) 1337 continue; 1338 rtm = mtod(m, struct rt_msghdr *); 1339 rtm->rtm_index = ifp->if_index; 1340 rtm->rtm_flags |= rt->rt_flags; 1341 rtm->rtm_errno = error; 1342 rtm->rtm_addrs = info.rti_addrs; 1343 } 1344 if (fibnum != RTS_ALLFIBS) { 1345 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: " 1346 "fibnum out of range 0 <= %d < %d", __func__, 1347 fibnum, rt_numfibs)); 1348 M_SETFIB(m, fibnum); 1349 m->m_flags |= RTS_FILTER_FIB; 1350 } 1351 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1352 } 1353} 1354 1355void 1356rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) 1357{ 1358 1359 rt_newaddrmsg_fib(cmd, ifa, error, rt, RTS_ALLFIBS); 1360} 1361 1362/* 1363 * This is the analogue to the rt_newaddrmsg which performs the same 1364 * function but for multicast group memberhips. This is easier since 1365 * there is no route state to worry about. 1366 */ 1367void 1368rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) 1369{ 1370 struct rt_addrinfo info; 1371 struct mbuf *m = NULL; 1372 struct ifnet *ifp = ifma->ifma_ifp; 1373 struct ifma_msghdr *ifmam; 1374 1375 if (route_cb.any_count == 0) 1376 return; 1377 1378 bzero((caddr_t)&info, sizeof(info)); 1379 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1380 info.rti_info[RTAX_IFP] = ifp ? ifp->if_addr->ifa_addr : NULL; 1381 /* 1382 * If a link-layer address is present, present it as a ``gateway'' 1383 * (similarly to how ARP entries, e.g., are presented). 1384 */ 1385 info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr; 1386 m = rt_msg1(cmd, &info); 1387 if (m == NULL) 1388 return; 1389 ifmam = mtod(m, struct ifma_msghdr *); 1390 KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n", 1391 __func__)); 1392 ifmam->ifmam_index = ifp->if_index; 1393 ifmam->ifmam_addrs = info.rti_addrs; 1394 rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); 1395} 1396 1397static struct mbuf * 1398rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1399 struct rt_addrinfo *info) 1400{ 1401 struct if_announcemsghdr *ifan; 1402 struct mbuf *m; 1403 1404 if (route_cb.any_count == 0) 1405 return NULL; 1406 bzero((caddr_t)info, sizeof(*info)); 1407 m = rt_msg1(type, info); 1408 if (m != NULL) { 1409 ifan = mtod(m, struct if_announcemsghdr *); 1410 ifan->ifan_index = ifp->if_index; 1411 strlcpy(ifan->ifan_name, ifp->if_xname, 1412 sizeof(ifan->ifan_name)); 1413 ifan->ifan_what = what; 1414 } 1415 return m; 1416} 1417 1418/* 1419 * This is called to generate routing socket messages indicating 1420 * IEEE80211 wireless events. 1421 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1422 */ 1423void 1424rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 1425{ 1426 struct mbuf *m; 1427 struct rt_addrinfo info; 1428 1429 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1430 if (m != NULL) { 1431 /* 1432 * Append the ieee80211 data. Try to stick it in the 1433 * mbuf containing the ifannounce msg; otherwise allocate 1434 * a new mbuf and append. 1435 * 1436 * NB: we assume m is a single mbuf. 1437 */ 1438 if (data_len > M_TRAILINGSPACE(m)) { 1439 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1440 if (n == NULL) { 1441 m_freem(m); 1442 return; 1443 } 1444 bcopy(data, mtod(n, void *), data_len); 1445 n->m_len = data_len; 1446 m->m_next = n; 1447 } else if (data_len > 0) { 1448 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len); 1449 m->m_len += data_len; 1450 } 1451 if (m->m_flags & M_PKTHDR) 1452 m->m_pkthdr.len += data_len; 1453 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 1454 rt_dispatch(m, AF_UNSPEC); 1455 } 1456} 1457 1458/* 1459 * This is called to generate routing socket messages indicating 1460 * network interface arrival and departure. 1461 */ 1462void 1463rt_ifannouncemsg(struct ifnet *ifp, int what) 1464{ 1465 struct mbuf *m; 1466 struct rt_addrinfo info; 1467 1468 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1469 if (m != NULL) 1470 rt_dispatch(m, AF_UNSPEC); 1471} 1472 1473static void 1474rt_dispatch(struct mbuf *m, sa_family_t saf) 1475{ 1476 struct m_tag *tag; 1477 1478 /* 1479 * Preserve the family from the sockaddr, if any, in an m_tag for 1480 * use when injecting the mbuf into the routing socket buffer from 1481 * the netisr. 1482 */ 1483 if (saf != AF_UNSPEC) { 1484 tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), 1485 M_NOWAIT); 1486 if (tag == NULL) { 1487 m_freem(m); 1488 return; 1489 } 1490 *(unsigned short *)(tag + 1) = saf; 1491 m_tag_prepend(m, tag); 1492 } 1493#ifdef VIMAGE 1494 if (V_loif) 1495 m->m_pkthdr.rcvif = V_loif; 1496 else { 1497 m_freem(m); 1498 return; 1499 } 1500#endif 1501 netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */ 1502} 1503 1504/* 1505 * This is used in dumping the kernel table via sysctl(). 1506 */ 1507static int 1508sysctl_dumpentry(struct radix_node *rn, void *vw) 1509{ 1510 struct walkarg *w = vw; 1511 struct rtentry *rt = (struct rtentry *)rn; 1512 int error = 0, size; 1513 struct rt_addrinfo info; 1514 1515 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1516 return 0; 1517 if ((rt->rt_flags & RTF_HOST) == 0 1518 ? jailed_without_vnet(w->w_req->td->td_ucred) 1519 : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0) 1520 return (0); 1521 bzero((caddr_t)&info, sizeof(info)); 1522 info.rti_info[RTAX_DST] = rt_key(rt); 1523 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1524 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1525 info.rti_info[RTAX_GENMASK] = 0; 1526 if (rt->rt_ifp) { 1527 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; 1528 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 1529 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1530 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; 1531 } 1532 size = rt_msg2(RTM_GET, &info, NULL, w); 1533 if (w->w_req && w->w_tmem) { 1534 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 1535 1536 rtm->rtm_flags = rt->rt_flags; 1537 /* 1538 * let's be honest about this being a retarded hack 1539 */ 1540 rtm->rtm_fmask = rt->rt_rmx.rmx_pksent; 1541 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 1542 rtm->rtm_index = rt->rt_ifp->if_index; 1543 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1544 rtm->rtm_addrs = info.rti_addrs; 1545 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size); 1546 return (error); 1547 } 1548 return (error); 1549} 1550 1551#ifdef COMPAT_FREEBSD32 1552static void 1553copy_ifdata32(struct if_data *src, struct if_data32 *dst) 1554{ 1555 1556 bzero(dst, sizeof(*dst)); 1557 CP(*src, *dst, ifi_type); 1558 CP(*src, *dst, ifi_physical); 1559 CP(*src, *dst, ifi_addrlen); 1560 CP(*src, *dst, ifi_hdrlen); 1561 CP(*src, *dst, ifi_link_state); 1562 CP(*src, *dst, ifi_vhid); 1563 dst->ifi_datalen = sizeof(struct if_data32); 1564 CP(*src, *dst, ifi_mtu); 1565 CP(*src, *dst, ifi_metric); 1566 CP(*src, *dst, ifi_baudrate); 1567 CP(*src, *dst, ifi_ipackets); 1568 CP(*src, *dst, ifi_ierrors); 1569 CP(*src, *dst, ifi_opackets); 1570 CP(*src, *dst, ifi_oerrors); 1571 CP(*src, *dst, ifi_collisions); 1572 CP(*src, *dst, ifi_ibytes); 1573 CP(*src, *dst, ifi_obytes); 1574 CP(*src, *dst, ifi_imcasts); 1575 CP(*src, *dst, ifi_omcasts); 1576 CP(*src, *dst, ifi_iqdrops); 1577 CP(*src, *dst, ifi_noproto); 1578 CP(*src, *dst, ifi_hwassist); 1579 CP(*src, *dst, ifi_epoch); 1580 TV_CP(*src, *dst, ifi_lastchange); 1581} 1582#endif 1583 1584static int 1585sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info, 1586 struct walkarg *w, int len) 1587{ 1588 struct if_msghdrl *ifm; 1589 1590#ifdef COMPAT_FREEBSD32 1591 if (w->w_req->flags & SCTL_MASK32) { 1592 struct if_msghdrl32 *ifm32; 1593 1594 ifm32 = (struct if_msghdrl32 *)w->w_tmem; 1595 ifm32->ifm_addrs = info->rti_addrs; 1596 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1597 ifm32->ifm_index = ifp->if_index; 1598 ifm32->_ifm_spare1 = 0; 1599 ifm32->ifm_len = sizeof(*ifm32); 1600 ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); 1601 1602 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1603 /* Fixup if_data carp(4) vhid. */ 1604 if (carp_get_vhid_p != NULL) 1605 ifm32->ifm_data.ifi_vhid = 1606 (*carp_get_vhid_p)(ifp->if_addr); 1607 1608 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1609 } 1610#endif 1611 ifm = (struct if_msghdrl *)w->w_tmem; 1612 ifm->ifm_addrs = info->rti_addrs; 1613 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1614 ifm->ifm_index = ifp->if_index; 1615 ifm->_ifm_spare1 = 0; 1616 ifm->ifm_len = sizeof(*ifm); 1617 ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); 1618 1619 ifm->ifm_data = ifp->if_data; 1620 /* Fixup if_data carp(4) vhid. */ 1621 if (carp_get_vhid_p != NULL) 1622 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1623 1624 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1625} 1626 1627static int 1628sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info, 1629 struct walkarg *w, int len) 1630{ 1631 struct if_msghdr *ifm; 1632 1633#ifdef COMPAT_FREEBSD32 1634 if (w->w_req->flags & SCTL_MASK32) { 1635 struct if_msghdr32 *ifm32; 1636 1637 ifm32 = (struct if_msghdr32 *)w->w_tmem; 1638 ifm32->ifm_addrs = info->rti_addrs; 1639 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1640 ifm32->ifm_index = ifp->if_index; 1641 1642 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1643 /* Fixup if_data carp(4) vhid. */ 1644 if (carp_get_vhid_p != NULL) 1645 ifm32->ifm_data.ifi_vhid = 1646 (*carp_get_vhid_p)(ifp->if_addr); 1647 1648 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1649 } 1650#endif 1651 ifm = (struct if_msghdr *)w->w_tmem; 1652 ifm->ifm_addrs = info->rti_addrs; 1653 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1654 ifm->ifm_index = ifp->if_index; 1655 1656 ifm->ifm_data = ifp->if_data; 1657 /* Fixup if_data carp(4) vhid. */ 1658 if (carp_get_vhid_p != NULL) 1659 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1660 1661 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1662} 1663 1664static int 1665sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, 1666 struct walkarg *w, int len) 1667{ 1668 struct ifa_msghdrl *ifam; 1669 1670#ifdef COMPAT_FREEBSD32 1671 if (w->w_req->flags & SCTL_MASK32) { 1672 struct ifa_msghdrl32 *ifam32; 1673 1674 ifam32 = (struct ifa_msghdrl32 *)w->w_tmem; 1675 ifam32->ifam_addrs = info->rti_addrs; 1676 ifam32->ifam_flags = ifa->ifa_flags; 1677 ifam32->ifam_index = ifa->ifa_ifp->if_index; 1678 ifam32->_ifam_spare1 = 0; 1679 ifam32->ifam_len = sizeof(*ifam32); 1680 ifam32->ifam_data_off = 1681 offsetof(struct ifa_msghdrl32, ifam_data); 1682 ifam32->ifam_metric = ifa->ifa_metric; 1683 1684 copy_ifdata32(&ifa->ifa_ifp->if_data, &ifam32->ifam_data); 1685 /* Fixup if_data carp(4) vhid. */ 1686 if (carp_get_vhid_p != NULL) 1687 ifam32->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1688 1689 return (SYSCTL_OUT(w->w_req, (caddr_t)ifam32, len)); 1690 } 1691#endif 1692 1693 ifam = (struct ifa_msghdrl *)w->w_tmem; 1694 ifam->ifam_addrs = info->rti_addrs; 1695 ifam->ifam_flags = ifa->ifa_flags; 1696 ifam->ifam_index = ifa->ifa_ifp->if_index; 1697 ifam->_ifam_spare1 = 0; 1698 ifam->ifam_len = sizeof(*ifam); 1699 ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); 1700 ifam->ifam_metric = ifa->ifa_metric; 1701 1702 ifam->ifam_data = ifa->if_data; 1703 /* Fixup if_data carp(4) vhid. */ 1704 if (carp_get_vhid_p != NULL) 1705 ifam->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1706 1707 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1708} 1709 1710static int 1711sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, 1712 struct walkarg *w, int len) 1713{ 1714 struct ifa_msghdr *ifam; 1715 1716 ifam = (struct ifa_msghdr *)w->w_tmem; 1717 ifam->ifam_addrs = info->rti_addrs; 1718 ifam->ifam_flags = ifa->ifa_flags; 1719 ifam->ifam_index = ifa->ifa_ifp->if_index; 1720 ifam->ifam_metric = ifa->ifa_metric; 1721 1722 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1723} 1724 1725static int 1726sysctl_iflist(int af, struct walkarg *w) 1727{ 1728 struct ifnet *ifp; 1729 struct ifaddr *ifa; 1730 struct rt_addrinfo info; 1731 int len, error = 0; 1732 1733 bzero((caddr_t)&info, sizeof(info)); 1734 IFNET_RLOCK(); 1735 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1736 if (w->w_arg && w->w_arg != ifp->if_index) 1737 continue; 1738 IF_ADDR_RLOCK(ifp); 1739 ifa = ifp->if_addr; 1740 info.rti_info[RTAX_IFP] = ifa->ifa_addr; 1741 len = rt_msg2(RTM_IFINFO, &info, NULL, w); 1742 info.rti_info[RTAX_IFP] = NULL; 1743 if (w->w_req && w->w_tmem) { 1744 if (w->w_op == NET_RT_IFLISTL) 1745 error = sysctl_iflist_ifml(ifp, &info, w, len); 1746 else 1747 error = sysctl_iflist_ifm(ifp, &info, w, len); 1748 if (error) 1749 goto done; 1750 } 1751 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) { 1752 if (af && af != ifa->ifa_addr->sa_family) 1753 continue; 1754 if (prison_if(w->w_req->td->td_ucred, 1755 ifa->ifa_addr) != 0) 1756 continue; 1757 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1758 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1759 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1760 len = rt_msg2(RTM_NEWADDR, &info, NULL, w); 1761 if (w->w_req && w->w_tmem) { 1762 if (w->w_op == NET_RT_IFLISTL) 1763 error = sysctl_iflist_ifaml(ifa, &info, 1764 w, len); 1765 else 1766 error = sysctl_iflist_ifam(ifa, &info, 1767 w, len); 1768 if (error) 1769 goto done; 1770 } 1771 } 1772 IF_ADDR_RUNLOCK(ifp); 1773 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1774 info.rti_info[RTAX_BRD] = NULL; 1775 } 1776done: 1777 if (ifp != NULL) 1778 IF_ADDR_RUNLOCK(ifp); 1779 IFNET_RUNLOCK(); 1780 return (error); 1781} 1782 1783static int 1784sysctl_ifmalist(int af, struct walkarg *w) 1785{ 1786 struct ifnet *ifp; 1787 struct ifmultiaddr *ifma; 1788 struct rt_addrinfo info; 1789 int len, error = 0; 1790 struct ifaddr *ifa; 1791 1792 bzero((caddr_t)&info, sizeof(info)); 1793 IFNET_RLOCK(); 1794 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1795 if (w->w_arg && w->w_arg != ifp->if_index) 1796 continue; 1797 ifa = ifp->if_addr; 1798 info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; 1799 IF_ADDR_RLOCK(ifp); 1800 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1801 if (af && af != ifma->ifma_addr->sa_family) 1802 continue; 1803 if (prison_if(w->w_req->td->td_ucred, 1804 ifma->ifma_addr) != 0) 1805 continue; 1806 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1807 info.rti_info[RTAX_GATEWAY] = 1808 (ifma->ifma_addr->sa_family != AF_LINK) ? 1809 ifma->ifma_lladdr : NULL; 1810 len = rt_msg2(RTM_NEWMADDR, &info, NULL, w); 1811 if (w->w_req && w->w_tmem) { 1812 struct ifma_msghdr *ifmam; 1813 1814 ifmam = (struct ifma_msghdr *)w->w_tmem; 1815 ifmam->ifmam_index = ifma->ifma_ifp->if_index; 1816 ifmam->ifmam_flags = 0; 1817 ifmam->ifmam_addrs = info.rti_addrs; 1818 error = SYSCTL_OUT(w->w_req, w->w_tmem, len); 1819 if (error) { 1820 IF_ADDR_RUNLOCK(ifp); 1821 goto done; 1822 } 1823 } 1824 } 1825 IF_ADDR_RUNLOCK(ifp); 1826 } 1827done: 1828 IFNET_RUNLOCK(); 1829 return (error); 1830} 1831 1832static int 1833sysctl_rtsock(SYSCTL_HANDLER_ARGS) 1834{ 1835 int *name = (int *)arg1; 1836 u_int namelen = arg2; 1837 struct radix_node_head *rnh = NULL; /* silence compiler. */ 1838 int i, lim, error = EINVAL; 1839 u_char af; 1840 struct walkarg w; 1841 1842 name ++; 1843 namelen--; 1844 if (req->newptr) 1845 return (EPERM); 1846 if (namelen != 3) 1847 return ((namelen < 3) ? EISDIR : ENOTDIR); 1848 af = name[0]; 1849 if (af > AF_MAX) 1850 return (EINVAL); 1851 bzero(&w, sizeof(w)); 1852 w.w_op = name[1]; 1853 w.w_arg = name[2]; 1854 w.w_req = req; 1855 1856 error = sysctl_wire_old_buffer(req, 0); 1857 if (error) 1858 return (error); 1859 switch (w.w_op) { 1860 1861 case NET_RT_DUMP: 1862 case NET_RT_FLAGS: 1863 if (af == 0) { /* dump all tables */ 1864 i = 1; 1865 lim = AF_MAX; 1866 } else /* dump only one table */ 1867 i = lim = af; 1868 1869 /* 1870 * take care of llinfo entries, the caller must 1871 * specify an AF 1872 */ 1873 if (w.w_op == NET_RT_FLAGS && 1874 (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) { 1875 if (af != 0) 1876 error = lltable_sysctl_dumparp(af, w.w_req); 1877 else 1878 error = EINVAL; 1879 break; 1880 } 1881 /* 1882 * take care of routing entries 1883 */ 1884 for (error = 0; error == 0 && i <= lim; i++) { 1885 rnh = rt_tables_get_rnh(req->td->td_proc->p_fibnum, i); 1886 if (rnh != NULL) { 1887 RADIX_NODE_HEAD_RLOCK(rnh); 1888 error = rnh->rnh_walktree(rnh, 1889 sysctl_dumpentry, &w); 1890 RADIX_NODE_HEAD_RUNLOCK(rnh); 1891 } else if (af != 0) 1892 error = EAFNOSUPPORT; 1893 } 1894 break; 1895 1896 case NET_RT_IFLIST: 1897 case NET_RT_IFLISTL: 1898 error = sysctl_iflist(af, &w); 1899 break; 1900 1901 case NET_RT_IFMALIST: 1902 error = sysctl_ifmalist(af, &w); 1903 break; 1904 } 1905 if (w.w_tmem) 1906 free(w.w_tmem, M_RTABLE); 1907 return (error); 1908} 1909 1910static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); 1911 1912/* 1913 * Definitions of protocols supported in the ROUTE domain. 1914 */ 1915 1916static struct domain routedomain; /* or at least forward */ 1917 1918static struct protosw routesw[] = { 1919{ 1920 .pr_type = SOCK_RAW, 1921 .pr_domain = &routedomain, 1922 .pr_flags = PR_ATOMIC|PR_ADDR, 1923 .pr_output = route_output, 1924 .pr_ctlinput = raw_ctlinput, 1925 .pr_init = raw_init, 1926 .pr_usrreqs = &route_usrreqs 1927} 1928}; 1929 1930static struct domain routedomain = { 1931 .dom_family = PF_ROUTE, 1932 .dom_name = "route", 1933 .dom_protosw = routesw, 1934 .dom_protoswNPROTOSW = &routesw[sizeof(routesw)/sizeof(routesw[0])] 1935}; 1936 1937VNET_DOMAIN_SET(route);
| 339 return 0; 340} 341 342static int 343rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 344{ 345 346 return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */ 347} 348 349static int 350rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 351{ 352 353 return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */ 354} 355 356/* pru_connect2 is EOPNOTSUPP */ 357/* pru_control is EOPNOTSUPP */ 358 359static void 360rts_detach(struct socket *so) 361{ 362 struct rawcb *rp = sotorawcb(so); 363 364 KASSERT(rp != NULL, ("rts_detach: rp == NULL")); 365 366 RTSOCK_LOCK(); 367 switch(rp->rcb_proto.sp_protocol) { 368 case AF_INET: 369 route_cb.ip_count--; 370 break; 371 case AF_INET6: 372 route_cb.ip6_count--; 373 break; 374 case AF_IPX: 375 route_cb.ipx_count--; 376 break; 377 } 378 route_cb.any_count--; 379 RTSOCK_UNLOCK(); 380 raw_usrreqs.pru_detach(so); 381} 382 383static int 384rts_disconnect(struct socket *so) 385{ 386 387 return (raw_usrreqs.pru_disconnect(so)); 388} 389 390/* pru_listen is EOPNOTSUPP */ 391 392static int 393rts_peeraddr(struct socket *so, struct sockaddr **nam) 394{ 395 396 return (raw_usrreqs.pru_peeraddr(so, nam)); 397} 398 399/* pru_rcvd is EOPNOTSUPP */ 400/* pru_rcvoob is EOPNOTSUPP */ 401 402static int 403rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 404 struct mbuf *control, struct thread *td) 405{ 406 407 return (raw_usrreqs.pru_send(so, flags, m, nam, control, td)); 408} 409 410/* pru_sense is null */ 411 412static int 413rts_shutdown(struct socket *so) 414{ 415 416 return (raw_usrreqs.pru_shutdown(so)); 417} 418 419static int 420rts_sockaddr(struct socket *so, struct sockaddr **nam) 421{ 422 423 return (raw_usrreqs.pru_sockaddr(so, nam)); 424} 425 426static struct pr_usrreqs route_usrreqs = { 427 .pru_abort = rts_abort, 428 .pru_attach = rts_attach, 429 .pru_bind = rts_bind, 430 .pru_connect = rts_connect, 431 .pru_detach = rts_detach, 432 .pru_disconnect = rts_disconnect, 433 .pru_peeraddr = rts_peeraddr, 434 .pru_send = rts_send, 435 .pru_shutdown = rts_shutdown, 436 .pru_sockaddr = rts_sockaddr, 437 .pru_close = rts_close, 438}; 439 440#ifndef _SOCKADDR_UNION_DEFINED 441#define _SOCKADDR_UNION_DEFINED 442/* 443 * The union of all possible address formats we handle. 444 */ 445union sockaddr_union { 446 struct sockaddr sa; 447 struct sockaddr_in sin; 448 struct sockaddr_in6 sin6; 449}; 450#endif /* _SOCKADDR_UNION_DEFINED */ 451 452static int 453rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, 454 struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred) 455{ 456 457 /* First, see if the returned address is part of the jail. */ 458 if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) { 459 info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 460 return (0); 461 } 462 463 switch (info->rti_info[RTAX_DST]->sa_family) { 464#ifdef INET 465 case AF_INET: 466 { 467 struct in_addr ia; 468 struct ifaddr *ifa; 469 int found; 470 471 found = 0; 472 /* 473 * Try to find an address on the given outgoing interface 474 * that belongs to the jail. 475 */ 476 IF_ADDR_RLOCK(ifp); 477 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 478 struct sockaddr *sa; 479 sa = ifa->ifa_addr; 480 if (sa->sa_family != AF_INET) 481 continue; 482 ia = ((struct sockaddr_in *)sa)->sin_addr; 483 if (prison_check_ip4(cred, &ia) == 0) { 484 found = 1; 485 break; 486 } 487 } 488 IF_ADDR_RUNLOCK(ifp); 489 if (!found) { 490 /* 491 * As a last resort return the 'default' jail address. 492 */ 493 ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)-> 494 sin_addr; 495 if (prison_get_ip4(cred, &ia) != 0) 496 return (ESRCH); 497 } 498 bzero(&saun->sin, sizeof(struct sockaddr_in)); 499 saun->sin.sin_len = sizeof(struct sockaddr_in); 500 saun->sin.sin_family = AF_INET; 501 saun->sin.sin_addr.s_addr = ia.s_addr; 502 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin; 503 break; 504 } 505#endif 506#ifdef INET6 507 case AF_INET6: 508 { 509 struct in6_addr ia6; 510 struct ifaddr *ifa; 511 int found; 512 513 found = 0; 514 /* 515 * Try to find an address on the given outgoing interface 516 * that belongs to the jail. 517 */ 518 IF_ADDR_RLOCK(ifp); 519 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 520 struct sockaddr *sa; 521 sa = ifa->ifa_addr; 522 if (sa->sa_family != AF_INET6) 523 continue; 524 bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, 525 &ia6, sizeof(struct in6_addr)); 526 if (prison_check_ip6(cred, &ia6) == 0) { 527 found = 1; 528 break; 529 } 530 } 531 IF_ADDR_RUNLOCK(ifp); 532 if (!found) { 533 /* 534 * As a last resort return the 'default' jail address. 535 */ 536 ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)-> 537 sin6_addr; 538 if (prison_get_ip6(cred, &ia6) != 0) 539 return (ESRCH); 540 } 541 bzero(&saun->sin6, sizeof(struct sockaddr_in6)); 542 saun->sin6.sin6_len = sizeof(struct sockaddr_in6); 543 saun->sin6.sin6_family = AF_INET6; 544 bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr)); 545 if (sa6_recoverscope(&saun->sin6) != 0) 546 return (ESRCH); 547 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6; 548 break; 549 } 550#endif 551 default: 552 return (ESRCH); 553 } 554 return (0); 555} 556 557/*ARGSUSED*/ 558static int 559route_output(struct mbuf *m, struct socket *so) 560{ 561#define sa_equal(a1, a2) (bcmp((a1), (a2), (a1)->sa_len) == 0) 562 struct rt_msghdr *rtm = NULL; 563 struct rtentry *rt = NULL; 564 struct radix_node_head *rnh; 565 struct rt_addrinfo info; 566 int len, error = 0; 567 struct ifnet *ifp = NULL; 568 union sockaddr_union saun; 569 sa_family_t saf = AF_UNSPEC; 570 571#define senderr(e) { error = e; goto flush;} 572 if (m == NULL || ((m->m_len < sizeof(long)) && 573 (m = m_pullup(m, sizeof(long))) == NULL)) 574 return (ENOBUFS); 575 if ((m->m_flags & M_PKTHDR) == 0) 576 panic("route_output"); 577 len = m->m_pkthdr.len; 578 if (len < sizeof(*rtm) || 579 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 580 info.rti_info[RTAX_DST] = NULL; 581 senderr(EINVAL); 582 } 583 R_Malloc(rtm, struct rt_msghdr *, len); 584 if (rtm == NULL) { 585 info.rti_info[RTAX_DST] = NULL; 586 senderr(ENOBUFS); 587 } 588 m_copydata(m, 0, len, (caddr_t)rtm); 589 if (rtm->rtm_version != RTM_VERSION) { 590 info.rti_info[RTAX_DST] = NULL; 591 senderr(EPROTONOSUPPORT); 592 } 593 rtm->rtm_pid = curproc->p_pid; 594 bzero(&info, sizeof(info)); 595 info.rti_addrs = rtm->rtm_addrs; 596 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) { 597 info.rti_info[RTAX_DST] = NULL; 598 senderr(EINVAL); 599 } 600 info.rti_flags = rtm->rtm_flags; 601 if (info.rti_info[RTAX_DST] == NULL || 602 info.rti_info[RTAX_DST]->sa_family >= AF_MAX || 603 (info.rti_info[RTAX_GATEWAY] != NULL && 604 info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) 605 senderr(EINVAL); 606 saf = info.rti_info[RTAX_DST]->sa_family; 607 /* 608 * Verify that the caller has the appropriate privilege; RTM_GET 609 * is the only operation the non-superuser is allowed. 610 */ 611 if (rtm->rtm_type != RTM_GET) { 612 error = priv_check(curthread, PRIV_NET_ROUTE); 613 if (error) 614 senderr(error); 615 } 616 617 /* 618 * The given gateway address may be an interface address. 619 * For example, issuing a "route change" command on a route 620 * entry that was created from a tunnel, and the gateway 621 * address given is the local end point. In this case the 622 * RTF_GATEWAY flag must be cleared or the destination will 623 * not be reachable even though there is no error message. 624 */ 625 if (info.rti_info[RTAX_GATEWAY] != NULL && 626 info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) { 627 struct route gw_ro; 628 629 bzero(&gw_ro, sizeof(gw_ro)); 630 gw_ro.ro_dst = *info.rti_info[RTAX_GATEWAY]; 631 rtalloc_ign_fib(&gw_ro, 0, so->so_fibnum); 632 /* 633 * A host route through the loopback interface is 634 * installed for each interface adddress. In pre 8.0 635 * releases the interface address of a PPP link type 636 * is not reachable locally. This behavior is fixed as 637 * part of the new L2/L3 redesign and rewrite work. The 638 * signature of this interface address route is the 639 * AF_LINK sa_family type of the rt_gateway, and the 640 * rt_ifp has the IFF_LOOPBACK flag set. 641 */ 642 if (gw_ro.ro_rt != NULL && 643 gw_ro.ro_rt->rt_gateway->sa_family == AF_LINK && 644 gw_ro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) 645 info.rti_flags &= ~RTF_GATEWAY; 646 if (gw_ro.ro_rt != NULL) 647 RTFREE(gw_ro.ro_rt); 648 } 649 650 switch (rtm->rtm_type) { 651 struct rtentry *saved_nrt; 652 653 case RTM_ADD: 654 if (info.rti_info[RTAX_GATEWAY] == NULL) 655 senderr(EINVAL); 656 saved_nrt = NULL; 657 658 /* support for new ARP code */ 659 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK && 660 (rtm->rtm_flags & RTF_LLDATA) != 0) { 661 error = lla_rt_output(rtm, &info); 662 break; 663 } 664 error = rtrequest1_fib(RTM_ADD, &info, &saved_nrt, 665 so->so_fibnum); 666 if (error == 0 && saved_nrt) { 667 RT_LOCK(saved_nrt); 668 rt_setmetrics(rtm->rtm_inits, 669 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 670 rtm->rtm_index = saved_nrt->rt_ifp->if_index; 671 RT_REMREF(saved_nrt); 672 RT_UNLOCK(saved_nrt); 673 } 674 break; 675 676 case RTM_DELETE: 677 saved_nrt = NULL; 678 /* support for new ARP code */ 679 if (info.rti_info[RTAX_GATEWAY] && 680 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 681 (rtm->rtm_flags & RTF_LLDATA) != 0) { 682 error = lla_rt_output(rtm, &info); 683 break; 684 } 685 error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, 686 so->so_fibnum); 687 if (error == 0) { 688 RT_LOCK(saved_nrt); 689 rt = saved_nrt; 690 goto report; 691 } 692 break; 693 694 case RTM_GET: 695 case RTM_CHANGE: 696 case RTM_LOCK: 697 rnh = rt_tables_get_rnh(so->so_fibnum, 698 info.rti_info[RTAX_DST]->sa_family); 699 if (rnh == NULL) 700 senderr(EAFNOSUPPORT); 701 RADIX_NODE_HEAD_RLOCK(rnh); 702 rt = (struct rtentry *) rnh->rnh_lookup(info.rti_info[RTAX_DST], 703 info.rti_info[RTAX_NETMASK], rnh); 704 if (rt == NULL) { /* XXX looks bogus */ 705 RADIX_NODE_HEAD_RUNLOCK(rnh); 706 senderr(ESRCH); 707 } 708#ifdef RADIX_MPATH 709 /* 710 * for RTM_CHANGE/LOCK, if we got multipath routes, 711 * we require users to specify a matching RTAX_GATEWAY. 712 * 713 * for RTM_GET, gate is optional even with multipath. 714 * if gate == NULL the first match is returned. 715 * (no need to call rt_mpath_matchgate if gate == NULL) 716 */ 717 if (rn_mpath_capable(rnh) && 718 (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) { 719 rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]); 720 if (!rt) { 721 RADIX_NODE_HEAD_RUNLOCK(rnh); 722 senderr(ESRCH); 723 } 724 } 725#endif 726 /* 727 * If performing proxied L2 entry insertion, and 728 * the actual PPP host entry is found, perform 729 * another search to retrieve the prefix route of 730 * the local end point of the PPP link. 731 */ 732 if (rtm->rtm_flags & RTF_ANNOUNCE) { 733 struct sockaddr laddr; 734 735 if (rt->rt_ifp != NULL && 736 rt->rt_ifp->if_type == IFT_PROPVIRTUAL) { 737 struct ifaddr *ifa; 738 739 ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1); 740 if (ifa != NULL) 741 rt_maskedcopy(ifa->ifa_addr, 742 &laddr, 743 ifa->ifa_netmask); 744 } else 745 rt_maskedcopy(rt->rt_ifa->ifa_addr, 746 &laddr, 747 rt->rt_ifa->ifa_netmask); 748 /* 749 * refactor rt and no lock operation necessary 750 */ 751 rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr, rnh); 752 if (rt == NULL) { 753 RADIX_NODE_HEAD_RUNLOCK(rnh); 754 senderr(ESRCH); 755 } 756 } 757 RT_LOCK(rt); 758 RT_ADDREF(rt); 759 RADIX_NODE_HEAD_RUNLOCK(rnh); 760 761 /* 762 * Fix for PR: 82974 763 * 764 * RTM_CHANGE/LOCK need a perfect match, rn_lookup() 765 * returns a perfect match in case a netmask is 766 * specified. For host routes only a longest prefix 767 * match is returned so it is necessary to compare the 768 * existence of the netmask. If both have a netmask 769 * rnh_lookup() did a perfect match and if none of them 770 * have a netmask both are host routes which is also a 771 * perfect match. 772 */ 773 774 if (rtm->rtm_type != RTM_GET && 775 (!rt_mask(rt) != !info.rti_info[RTAX_NETMASK])) { 776 RT_UNLOCK(rt); 777 senderr(ESRCH); 778 } 779 780 switch(rtm->rtm_type) { 781 782 case RTM_GET: 783 report: 784 RT_LOCK_ASSERT(rt); 785 if ((rt->rt_flags & RTF_HOST) == 0 786 ? jailed_without_vnet(curthread->td_ucred) 787 : prison_if(curthread->td_ucred, 788 rt_key(rt)) != 0) { 789 RT_UNLOCK(rt); 790 senderr(ESRCH); 791 } 792 info.rti_info[RTAX_DST] = rt_key(rt); 793 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 794 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 795 info.rti_info[RTAX_GENMASK] = 0; 796 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 797 ifp = rt->rt_ifp; 798 if (ifp) { 799 info.rti_info[RTAX_IFP] = 800 ifp->if_addr->ifa_addr; 801 error = rtm_get_jailed(&info, ifp, rt, 802 &saun, curthread->td_ucred); 803 if (error != 0) { 804 RT_UNLOCK(rt); 805 senderr(error); 806 } 807 if (ifp->if_flags & IFF_POINTOPOINT) 808 info.rti_info[RTAX_BRD] = 809 rt->rt_ifa->ifa_dstaddr; 810 rtm->rtm_index = ifp->if_index; 811 } else { 812 info.rti_info[RTAX_IFP] = NULL; 813 info.rti_info[RTAX_IFA] = NULL; 814 } 815 } else if ((ifp = rt->rt_ifp) != NULL) { 816 rtm->rtm_index = ifp->if_index; 817 } 818 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL); 819 if (len > rtm->rtm_msglen) { 820 struct rt_msghdr *new_rtm; 821 R_Malloc(new_rtm, struct rt_msghdr *, len); 822 if (new_rtm == NULL) { 823 RT_UNLOCK(rt); 824 senderr(ENOBUFS); 825 } 826 bcopy(rtm, new_rtm, rtm->rtm_msglen); 827 Free(rtm); rtm = new_rtm; 828 } 829 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL); 830 rtm->rtm_flags = rt->rt_flags; 831 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 832 rtm->rtm_addrs = info.rti_addrs; 833 break; 834 835 case RTM_CHANGE: 836 /* 837 * New gateway could require new ifaddr, ifp; 838 * flags may also be different; ifp may be specified 839 * by ll sockaddr when protocol address is ambiguous 840 */ 841 if (((rt->rt_flags & RTF_GATEWAY) && 842 info.rti_info[RTAX_GATEWAY] != NULL) || 843 info.rti_info[RTAX_IFP] != NULL || 844 (info.rti_info[RTAX_IFA] != NULL && 845 !sa_equal(info.rti_info[RTAX_IFA], 846 rt->rt_ifa->ifa_addr))) { 847 RT_UNLOCK(rt); 848 RADIX_NODE_HEAD_LOCK(rnh); 849 error = rt_getifa_fib(&info, rt->rt_fibnum); 850 /* 851 * XXXRW: Really we should release this 852 * reference later, but this maintains 853 * historical behavior. 854 */ 855 if (info.rti_ifa != NULL) 856 ifa_free(info.rti_ifa); 857 RADIX_NODE_HEAD_UNLOCK(rnh); 858 if (error != 0) 859 senderr(error); 860 RT_LOCK(rt); 861 } 862 if (info.rti_ifa != NULL && 863 info.rti_ifa != rt->rt_ifa && 864 rt->rt_ifa != NULL && 865 rt->rt_ifa->ifa_rtrequest != NULL) { 866 rt->rt_ifa->ifa_rtrequest(RTM_DELETE, rt, 867 &info); 868 ifa_free(rt->rt_ifa); 869 } 870 if (info.rti_info[RTAX_GATEWAY] != NULL) { 871 RT_UNLOCK(rt); 872 RADIX_NODE_HEAD_LOCK(rnh); 873 RT_LOCK(rt); 874 875 error = rt_setgate(rt, rt_key(rt), 876 info.rti_info[RTAX_GATEWAY]); 877 RADIX_NODE_HEAD_UNLOCK(rnh); 878 if (error != 0) { 879 RT_UNLOCK(rt); 880 senderr(error); 881 } 882 rt->rt_flags |= (RTF_GATEWAY & info.rti_flags); 883 } 884 if (info.rti_ifa != NULL && 885 info.rti_ifa != rt->rt_ifa) { 886 ifa_ref(info.rti_ifa); 887 rt->rt_ifa = info.rti_ifa; 888 rt->rt_ifp = info.rti_ifp; 889 } 890 /* Allow some flags to be toggled on change. */ 891 rt->rt_flags = (rt->rt_flags & ~RTF_FMASK) | 892 (rtm->rtm_flags & RTF_FMASK); 893 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 894 &rt->rt_rmx); 895 rtm->rtm_index = rt->rt_ifp->if_index; 896 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 897 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 898 /* FALLTHROUGH */ 899 case RTM_LOCK: 900 /* We don't support locks anymore */ 901 break; 902 } 903 RT_UNLOCK(rt); 904 break; 905 906 default: 907 senderr(EOPNOTSUPP); 908 } 909 910flush: 911 if (rtm) { 912 if (error) 913 rtm->rtm_errno = error; 914 else 915 rtm->rtm_flags |= RTF_DONE; 916 } 917 if (rt) /* XXX can this be true? */ 918 RTFREE(rt); 919 { 920 struct rawcb *rp = NULL; 921 /* 922 * Check to see if we don't want our own messages. 923 */ 924 if ((so->so_options & SO_USELOOPBACK) == 0) { 925 if (route_cb.any_count <= 1) { 926 if (rtm) 927 Free(rtm); 928 m_freem(m); 929 return (error); 930 } 931 /* There is another listener, so construct message */ 932 rp = sotorawcb(so); 933 } 934 if (rtm) { 935 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 936 if (m->m_pkthdr.len < rtm->rtm_msglen) { 937 m_freem(m); 938 m = NULL; 939 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 940 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 941 } 942 if (m) { 943 M_SETFIB(m, so->so_fibnum); 944 m->m_flags |= RTS_FILTER_FIB; 945 if (rp) { 946 /* 947 * XXX insure we don't get a copy by 948 * invalidating our protocol 949 */ 950 unsigned short family = rp->rcb_proto.sp_family; 951 rp->rcb_proto.sp_family = 0; 952 rt_dispatch(m, saf); 953 rp->rcb_proto.sp_family = family; 954 } else 955 rt_dispatch(m, saf); 956 } 957 /* info.rti_info[RTAX_DST] (used above) can point inside of rtm */ 958 if (rtm) 959 Free(rtm); 960 } 961 return (error); 962#undef sa_equal 963} 964 965static void 966rt_setmetrics(u_long which, const struct rt_metrics *in, 967 struct rt_metrics_lite *out) 968{ 969#define metric(f, e) if (which & (f)) out->e = in->e; 970 /* 971 * Only these are stored in the routing entry since introduction 972 * of tcp hostcache. The rest is ignored. 973 */ 974 metric(RTV_MTU, rmx_mtu); 975 metric(RTV_WEIGHT, rmx_weight); 976 /* Userland -> kernel timebase conversion. */ 977 if (which & RTV_EXPIRE) 978 out->rmx_expire = in->rmx_expire ? 979 in->rmx_expire - time_second + time_uptime : 0; 980#undef metric 981} 982 983static void 984rt_getmetrics(const struct rt_metrics_lite *in, struct rt_metrics *out) 985{ 986#define metric(e) out->e = in->e; 987 bzero(out, sizeof(*out)); 988 metric(rmx_mtu); 989 metric(rmx_weight); 990 /* Kernel -> userland timebase conversion. */ 991 out->rmx_expire = in->rmx_expire ? 992 in->rmx_expire - time_uptime + time_second : 0; 993#undef metric 994} 995 996/* 997 * Extract the addresses of the passed sockaddrs. 998 * Do a little sanity checking so as to avoid bad memory references. 999 * This data is derived straight from userland. 1000 */ 1001static int 1002rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) 1003{ 1004 struct sockaddr *sa; 1005 int i; 1006 1007 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 1008 if ((rtinfo->rti_addrs & (1 << i)) == 0) 1009 continue; 1010 sa = (struct sockaddr *)cp; 1011 /* 1012 * It won't fit. 1013 */ 1014 if (cp + sa->sa_len > cplim) 1015 return (EINVAL); 1016 /* 1017 * there are no more.. quit now 1018 * If there are more bits, they are in error. 1019 * I've seen this. route(1) can evidently generate these. 1020 * This causes kernel to core dump. 1021 * for compatibility, If we see this, point to a safe address. 1022 */ 1023 if (sa->sa_len == 0) { 1024 rtinfo->rti_info[i] = &sa_zero; 1025 return (0); /* should be EINVAL but for compat */ 1026 } 1027 /* accept it */ 1028 rtinfo->rti_info[i] = sa; 1029 cp += SA_SIZE(sa); 1030 } 1031 return (0); 1032} 1033 1034/* 1035 * Used by the routing socket. 1036 */ 1037static struct mbuf * 1038rt_msg1(int type, struct rt_addrinfo *rtinfo) 1039{ 1040 struct rt_msghdr *rtm; 1041 struct mbuf *m; 1042 int i; 1043 struct sockaddr *sa; 1044 int len, dlen; 1045 1046 switch (type) { 1047 1048 case RTM_DELADDR: 1049 case RTM_NEWADDR: 1050 len = sizeof(struct ifa_msghdr); 1051 break; 1052 1053 case RTM_DELMADDR: 1054 case RTM_NEWMADDR: 1055 len = sizeof(struct ifma_msghdr); 1056 break; 1057 1058 case RTM_IFINFO: 1059 len = sizeof(struct if_msghdr); 1060 break; 1061 1062 case RTM_IFANNOUNCE: 1063 case RTM_IEEE80211: 1064 len = sizeof(struct if_announcemsghdr); 1065 break; 1066 1067 default: 1068 len = sizeof(struct rt_msghdr); 1069 } 1070 if (len > MCLBYTES) 1071 panic("rt_msg1"); 1072 m = m_gethdr(M_DONTWAIT, MT_DATA); 1073 if (m && len > MHLEN) { 1074 MCLGET(m, M_DONTWAIT); 1075 if ((m->m_flags & M_EXT) == 0) { 1076 m_free(m); 1077 m = NULL; 1078 } 1079 } 1080 if (m == NULL) 1081 return (m); 1082 m->m_pkthdr.len = m->m_len = len; 1083 m->m_pkthdr.rcvif = NULL; 1084 rtm = mtod(m, struct rt_msghdr *); 1085 bzero((caddr_t)rtm, len); 1086 for (i = 0; i < RTAX_MAX; i++) { 1087 if ((sa = rtinfo->rti_info[i]) == NULL) 1088 continue; 1089 rtinfo->rti_addrs |= (1 << i); 1090 dlen = SA_SIZE(sa); 1091 m_copyback(m, len, dlen, (caddr_t)sa); 1092 len += dlen; 1093 } 1094 if (m->m_pkthdr.len != len) { 1095 m_freem(m); 1096 return (NULL); 1097 } 1098 rtm->rtm_msglen = len; 1099 rtm->rtm_version = RTM_VERSION; 1100 rtm->rtm_type = type; 1101 return (m); 1102} 1103 1104/* 1105 * Used by the sysctl code and routing socket. 1106 */ 1107static int 1108rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w) 1109{ 1110 int i; 1111 int len, dlen, second_time = 0; 1112 caddr_t cp0; 1113 1114 rtinfo->rti_addrs = 0; 1115again: 1116 switch (type) { 1117 1118 case RTM_DELADDR: 1119 case RTM_NEWADDR: 1120 if (w != NULL && w->w_op == NET_RT_IFLISTL) { 1121#ifdef COMPAT_FREEBSD32 1122 if (w->w_req->flags & SCTL_MASK32) 1123 len = sizeof(struct ifa_msghdrl32); 1124 else 1125#endif 1126 len = sizeof(struct ifa_msghdrl); 1127 } else 1128 len = sizeof(struct ifa_msghdr); 1129 break; 1130 1131 case RTM_IFINFO: 1132#ifdef COMPAT_FREEBSD32 1133 if (w != NULL && w->w_req->flags & SCTL_MASK32) { 1134 if (w->w_op == NET_RT_IFLISTL) 1135 len = sizeof(struct if_msghdrl32); 1136 else 1137 len = sizeof(struct if_msghdr32); 1138 break; 1139 } 1140#endif 1141 if (w != NULL && w->w_op == NET_RT_IFLISTL) 1142 len = sizeof(struct if_msghdrl); 1143 else 1144 len = sizeof(struct if_msghdr); 1145 break; 1146 1147 case RTM_NEWMADDR: 1148 len = sizeof(struct ifma_msghdr); 1149 break; 1150 1151 default: 1152 len = sizeof(struct rt_msghdr); 1153 } 1154 cp0 = cp; 1155 if (cp0) 1156 cp += len; 1157 for (i = 0; i < RTAX_MAX; i++) { 1158 struct sockaddr *sa; 1159 1160 if ((sa = rtinfo->rti_info[i]) == NULL) 1161 continue; 1162 rtinfo->rti_addrs |= (1 << i); 1163 dlen = SA_SIZE(sa); 1164 if (cp) { 1165 bcopy((caddr_t)sa, cp, (unsigned)dlen); 1166 cp += dlen; 1167 } 1168 len += dlen; 1169 } 1170 len = ALIGN(len); 1171 if (cp == NULL && w != NULL && !second_time) { 1172 struct walkarg *rw = w; 1173 1174 if (rw->w_req) { 1175 if (rw->w_tmemsize < len) { 1176 if (rw->w_tmem) 1177 free(rw->w_tmem, M_RTABLE); 1178 rw->w_tmem = (caddr_t) 1179 malloc(len, M_RTABLE, M_NOWAIT); 1180 if (rw->w_tmem) 1181 rw->w_tmemsize = len; 1182 } 1183 if (rw->w_tmem) { 1184 cp = rw->w_tmem; 1185 second_time = 1; 1186 goto again; 1187 } 1188 } 1189 } 1190 if (cp) { 1191 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 1192 1193 rtm->rtm_version = RTM_VERSION; 1194 rtm->rtm_type = type; 1195 rtm->rtm_msglen = len; 1196 } 1197 return (len); 1198} 1199 1200/* 1201 * This routine is called to generate a message from the routing 1202 * socket indicating that a redirect has occured, a routing lookup 1203 * has failed, or that a protocol has detected timeouts to a particular 1204 * destination. 1205 */ 1206void 1207rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, 1208 int fibnum) 1209{ 1210 struct rt_msghdr *rtm; 1211 struct mbuf *m; 1212 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1213 1214 if (route_cb.any_count == 0) 1215 return; 1216 m = rt_msg1(type, rtinfo); 1217 if (m == NULL) 1218 return; 1219 1220 if (fibnum != RTS_ALLFIBS) { 1221 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " 1222 "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); 1223 M_SETFIB(m, fibnum); 1224 m->m_flags |= RTS_FILTER_FIB; 1225 } 1226 1227 rtm = mtod(m, struct rt_msghdr *); 1228 rtm->rtm_flags = RTF_DONE | flags; 1229 rtm->rtm_errno = error; 1230 rtm->rtm_addrs = rtinfo->rti_addrs; 1231 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1232} 1233 1234void 1235rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 1236{ 1237 1238 rt_missmsg_fib(type, rtinfo, flags, error, RTS_ALLFIBS); 1239} 1240 1241/* 1242 * This routine is called to generate a message from the routing 1243 * socket indicating that the status of a network interface has changed. 1244 */ 1245void 1246rt_ifmsg(struct ifnet *ifp) 1247{ 1248 struct if_msghdr *ifm; 1249 struct mbuf *m; 1250 struct rt_addrinfo info; 1251 1252 if (route_cb.any_count == 0) 1253 return; 1254 bzero((caddr_t)&info, sizeof(info)); 1255 m = rt_msg1(RTM_IFINFO, &info); 1256 if (m == NULL) 1257 return; 1258 ifm = mtod(m, struct if_msghdr *); 1259 ifm->ifm_index = ifp->if_index; 1260 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1261 ifm->ifm_data = ifp->if_data; 1262 ifm->ifm_addrs = 0; 1263 rt_dispatch(m, AF_UNSPEC); 1264} 1265 1266/* 1267 * This is called to generate messages from the routing socket 1268 * indicating a network interface has had addresses associated with it. 1269 * if we ever reverse the logic and replace messages TO the routing 1270 * socket indicate a request to configure interfaces, then it will 1271 * be unnecessary as the routing socket will automatically generate 1272 * copies of it. 1273 */ 1274void 1275rt_newaddrmsg_fib(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt, 1276 int fibnum) 1277{ 1278 struct rt_addrinfo info; 1279 struct sockaddr *sa = NULL; 1280 int pass; 1281 struct mbuf *m = NULL; 1282 struct ifnet *ifp = ifa->ifa_ifp; 1283 1284 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 1285 ("unexpected cmd %u", cmd)); 1286#if defined(INET) || defined(INET6) 1287#ifdef SCTP 1288 /* 1289 * notify the SCTP stack 1290 * this will only get called when an address is added/deleted 1291 * XXX pass the ifaddr struct instead if ifa->ifa_addr... 1292 */ 1293 sctp_addr_change(ifa, cmd); 1294#endif /* SCTP */ 1295#endif 1296 if (route_cb.any_count == 0) 1297 return; 1298 for (pass = 1; pass < 3; pass++) { 1299 bzero((caddr_t)&info, sizeof(info)); 1300 if ((cmd == RTM_ADD && pass == 1) || 1301 (cmd == RTM_DELETE && pass == 2)) { 1302 struct ifa_msghdr *ifam; 1303 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 1304 1305 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1306 info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; 1307 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1308 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1309 if ((m = rt_msg1(ncmd, &info)) == NULL) 1310 continue; 1311 ifam = mtod(m, struct ifa_msghdr *); 1312 ifam->ifam_index = ifp->if_index; 1313 ifam->ifam_metric = ifa->ifa_metric; 1314 ifam->ifam_flags = ifa->ifa_flags; 1315 ifam->ifam_addrs = info.rti_addrs; 1316 } 1317 if ((cmd == RTM_ADD && pass == 2) || 1318 (cmd == RTM_DELETE && pass == 1)) { 1319 struct rt_msghdr *rtm; 1320 1321 if (rt == NULL) 1322 continue; 1323 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1324 info.rti_info[RTAX_DST] = sa = rt_key(rt); 1325 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1326 if ((m = rt_msg1(cmd, &info)) == NULL) 1327 continue; 1328 rtm = mtod(m, struct rt_msghdr *); 1329 rtm->rtm_index = ifp->if_index; 1330 rtm->rtm_flags |= rt->rt_flags; 1331 rtm->rtm_errno = error; 1332 rtm->rtm_addrs = info.rti_addrs; 1333 } 1334 if (fibnum != RTS_ALLFIBS) { 1335 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: " 1336 "fibnum out of range 0 <= %d < %d", __func__, 1337 fibnum, rt_numfibs)); 1338 M_SETFIB(m, fibnum); 1339 m->m_flags |= RTS_FILTER_FIB; 1340 } 1341 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1342 } 1343} 1344 1345void 1346rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) 1347{ 1348 1349 rt_newaddrmsg_fib(cmd, ifa, error, rt, RTS_ALLFIBS); 1350} 1351 1352/* 1353 * This is the analogue to the rt_newaddrmsg which performs the same 1354 * function but for multicast group memberhips. This is easier since 1355 * there is no route state to worry about. 1356 */ 1357void 1358rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) 1359{ 1360 struct rt_addrinfo info; 1361 struct mbuf *m = NULL; 1362 struct ifnet *ifp = ifma->ifma_ifp; 1363 struct ifma_msghdr *ifmam; 1364 1365 if (route_cb.any_count == 0) 1366 return; 1367 1368 bzero((caddr_t)&info, sizeof(info)); 1369 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1370 info.rti_info[RTAX_IFP] = ifp ? ifp->if_addr->ifa_addr : NULL; 1371 /* 1372 * If a link-layer address is present, present it as a ``gateway'' 1373 * (similarly to how ARP entries, e.g., are presented). 1374 */ 1375 info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr; 1376 m = rt_msg1(cmd, &info); 1377 if (m == NULL) 1378 return; 1379 ifmam = mtod(m, struct ifma_msghdr *); 1380 KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n", 1381 __func__)); 1382 ifmam->ifmam_index = ifp->if_index; 1383 ifmam->ifmam_addrs = info.rti_addrs; 1384 rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); 1385} 1386 1387static struct mbuf * 1388rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1389 struct rt_addrinfo *info) 1390{ 1391 struct if_announcemsghdr *ifan; 1392 struct mbuf *m; 1393 1394 if (route_cb.any_count == 0) 1395 return NULL; 1396 bzero((caddr_t)info, sizeof(*info)); 1397 m = rt_msg1(type, info); 1398 if (m != NULL) { 1399 ifan = mtod(m, struct if_announcemsghdr *); 1400 ifan->ifan_index = ifp->if_index; 1401 strlcpy(ifan->ifan_name, ifp->if_xname, 1402 sizeof(ifan->ifan_name)); 1403 ifan->ifan_what = what; 1404 } 1405 return m; 1406} 1407 1408/* 1409 * This is called to generate routing socket messages indicating 1410 * IEEE80211 wireless events. 1411 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1412 */ 1413void 1414rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 1415{ 1416 struct mbuf *m; 1417 struct rt_addrinfo info; 1418 1419 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1420 if (m != NULL) { 1421 /* 1422 * Append the ieee80211 data. Try to stick it in the 1423 * mbuf containing the ifannounce msg; otherwise allocate 1424 * a new mbuf and append. 1425 * 1426 * NB: we assume m is a single mbuf. 1427 */ 1428 if (data_len > M_TRAILINGSPACE(m)) { 1429 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1430 if (n == NULL) { 1431 m_freem(m); 1432 return; 1433 } 1434 bcopy(data, mtod(n, void *), data_len); 1435 n->m_len = data_len; 1436 m->m_next = n; 1437 } else if (data_len > 0) { 1438 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len); 1439 m->m_len += data_len; 1440 } 1441 if (m->m_flags & M_PKTHDR) 1442 m->m_pkthdr.len += data_len; 1443 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 1444 rt_dispatch(m, AF_UNSPEC); 1445 } 1446} 1447 1448/* 1449 * This is called to generate routing socket messages indicating 1450 * network interface arrival and departure. 1451 */ 1452void 1453rt_ifannouncemsg(struct ifnet *ifp, int what) 1454{ 1455 struct mbuf *m; 1456 struct rt_addrinfo info; 1457 1458 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1459 if (m != NULL) 1460 rt_dispatch(m, AF_UNSPEC); 1461} 1462 1463static void 1464rt_dispatch(struct mbuf *m, sa_family_t saf) 1465{ 1466 struct m_tag *tag; 1467 1468 /* 1469 * Preserve the family from the sockaddr, if any, in an m_tag for 1470 * use when injecting the mbuf into the routing socket buffer from 1471 * the netisr. 1472 */ 1473 if (saf != AF_UNSPEC) { 1474 tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), 1475 M_NOWAIT); 1476 if (tag == NULL) { 1477 m_freem(m); 1478 return; 1479 } 1480 *(unsigned short *)(tag + 1) = saf; 1481 m_tag_prepend(m, tag); 1482 } 1483#ifdef VIMAGE 1484 if (V_loif) 1485 m->m_pkthdr.rcvif = V_loif; 1486 else { 1487 m_freem(m); 1488 return; 1489 } 1490#endif 1491 netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */ 1492} 1493 1494/* 1495 * This is used in dumping the kernel table via sysctl(). 1496 */ 1497static int 1498sysctl_dumpentry(struct radix_node *rn, void *vw) 1499{ 1500 struct walkarg *w = vw; 1501 struct rtentry *rt = (struct rtentry *)rn; 1502 int error = 0, size; 1503 struct rt_addrinfo info; 1504 1505 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1506 return 0; 1507 if ((rt->rt_flags & RTF_HOST) == 0 1508 ? jailed_without_vnet(w->w_req->td->td_ucred) 1509 : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0) 1510 return (0); 1511 bzero((caddr_t)&info, sizeof(info)); 1512 info.rti_info[RTAX_DST] = rt_key(rt); 1513 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1514 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1515 info.rti_info[RTAX_GENMASK] = 0; 1516 if (rt->rt_ifp) { 1517 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; 1518 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 1519 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1520 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; 1521 } 1522 size = rt_msg2(RTM_GET, &info, NULL, w); 1523 if (w->w_req && w->w_tmem) { 1524 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 1525 1526 rtm->rtm_flags = rt->rt_flags; 1527 /* 1528 * let's be honest about this being a retarded hack 1529 */ 1530 rtm->rtm_fmask = rt->rt_rmx.rmx_pksent; 1531 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 1532 rtm->rtm_index = rt->rt_ifp->if_index; 1533 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1534 rtm->rtm_addrs = info.rti_addrs; 1535 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size); 1536 return (error); 1537 } 1538 return (error); 1539} 1540 1541#ifdef COMPAT_FREEBSD32 1542static void 1543copy_ifdata32(struct if_data *src, struct if_data32 *dst) 1544{ 1545 1546 bzero(dst, sizeof(*dst)); 1547 CP(*src, *dst, ifi_type); 1548 CP(*src, *dst, ifi_physical); 1549 CP(*src, *dst, ifi_addrlen); 1550 CP(*src, *dst, ifi_hdrlen); 1551 CP(*src, *dst, ifi_link_state); 1552 CP(*src, *dst, ifi_vhid); 1553 dst->ifi_datalen = sizeof(struct if_data32); 1554 CP(*src, *dst, ifi_mtu); 1555 CP(*src, *dst, ifi_metric); 1556 CP(*src, *dst, ifi_baudrate); 1557 CP(*src, *dst, ifi_ipackets); 1558 CP(*src, *dst, ifi_ierrors); 1559 CP(*src, *dst, ifi_opackets); 1560 CP(*src, *dst, ifi_oerrors); 1561 CP(*src, *dst, ifi_collisions); 1562 CP(*src, *dst, ifi_ibytes); 1563 CP(*src, *dst, ifi_obytes); 1564 CP(*src, *dst, ifi_imcasts); 1565 CP(*src, *dst, ifi_omcasts); 1566 CP(*src, *dst, ifi_iqdrops); 1567 CP(*src, *dst, ifi_noproto); 1568 CP(*src, *dst, ifi_hwassist); 1569 CP(*src, *dst, ifi_epoch); 1570 TV_CP(*src, *dst, ifi_lastchange); 1571} 1572#endif 1573 1574static int 1575sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info, 1576 struct walkarg *w, int len) 1577{ 1578 struct if_msghdrl *ifm; 1579 1580#ifdef COMPAT_FREEBSD32 1581 if (w->w_req->flags & SCTL_MASK32) { 1582 struct if_msghdrl32 *ifm32; 1583 1584 ifm32 = (struct if_msghdrl32 *)w->w_tmem; 1585 ifm32->ifm_addrs = info->rti_addrs; 1586 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1587 ifm32->ifm_index = ifp->if_index; 1588 ifm32->_ifm_spare1 = 0; 1589 ifm32->ifm_len = sizeof(*ifm32); 1590 ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); 1591 1592 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1593 /* Fixup if_data carp(4) vhid. */ 1594 if (carp_get_vhid_p != NULL) 1595 ifm32->ifm_data.ifi_vhid = 1596 (*carp_get_vhid_p)(ifp->if_addr); 1597 1598 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1599 } 1600#endif 1601 ifm = (struct if_msghdrl *)w->w_tmem; 1602 ifm->ifm_addrs = info->rti_addrs; 1603 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1604 ifm->ifm_index = ifp->if_index; 1605 ifm->_ifm_spare1 = 0; 1606 ifm->ifm_len = sizeof(*ifm); 1607 ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); 1608 1609 ifm->ifm_data = ifp->if_data; 1610 /* Fixup if_data carp(4) vhid. */ 1611 if (carp_get_vhid_p != NULL) 1612 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1613 1614 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1615} 1616 1617static int 1618sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info, 1619 struct walkarg *w, int len) 1620{ 1621 struct if_msghdr *ifm; 1622 1623#ifdef COMPAT_FREEBSD32 1624 if (w->w_req->flags & SCTL_MASK32) { 1625 struct if_msghdr32 *ifm32; 1626 1627 ifm32 = (struct if_msghdr32 *)w->w_tmem; 1628 ifm32->ifm_addrs = info->rti_addrs; 1629 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1630 ifm32->ifm_index = ifp->if_index; 1631 1632 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1633 /* Fixup if_data carp(4) vhid. */ 1634 if (carp_get_vhid_p != NULL) 1635 ifm32->ifm_data.ifi_vhid = 1636 (*carp_get_vhid_p)(ifp->if_addr); 1637 1638 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1639 } 1640#endif 1641 ifm = (struct if_msghdr *)w->w_tmem; 1642 ifm->ifm_addrs = info->rti_addrs; 1643 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1644 ifm->ifm_index = ifp->if_index; 1645 1646 ifm->ifm_data = ifp->if_data; 1647 /* Fixup if_data carp(4) vhid. */ 1648 if (carp_get_vhid_p != NULL) 1649 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1650 1651 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1652} 1653 1654static int 1655sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, 1656 struct walkarg *w, int len) 1657{ 1658 struct ifa_msghdrl *ifam; 1659 1660#ifdef COMPAT_FREEBSD32 1661 if (w->w_req->flags & SCTL_MASK32) { 1662 struct ifa_msghdrl32 *ifam32; 1663 1664 ifam32 = (struct ifa_msghdrl32 *)w->w_tmem; 1665 ifam32->ifam_addrs = info->rti_addrs; 1666 ifam32->ifam_flags = ifa->ifa_flags; 1667 ifam32->ifam_index = ifa->ifa_ifp->if_index; 1668 ifam32->_ifam_spare1 = 0; 1669 ifam32->ifam_len = sizeof(*ifam32); 1670 ifam32->ifam_data_off = 1671 offsetof(struct ifa_msghdrl32, ifam_data); 1672 ifam32->ifam_metric = ifa->ifa_metric; 1673 1674 copy_ifdata32(&ifa->ifa_ifp->if_data, &ifam32->ifam_data); 1675 /* Fixup if_data carp(4) vhid. */ 1676 if (carp_get_vhid_p != NULL) 1677 ifam32->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1678 1679 return (SYSCTL_OUT(w->w_req, (caddr_t)ifam32, len)); 1680 } 1681#endif 1682 1683 ifam = (struct ifa_msghdrl *)w->w_tmem; 1684 ifam->ifam_addrs = info->rti_addrs; 1685 ifam->ifam_flags = ifa->ifa_flags; 1686 ifam->ifam_index = ifa->ifa_ifp->if_index; 1687 ifam->_ifam_spare1 = 0; 1688 ifam->ifam_len = sizeof(*ifam); 1689 ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); 1690 ifam->ifam_metric = ifa->ifa_metric; 1691 1692 ifam->ifam_data = ifa->if_data; 1693 /* Fixup if_data carp(4) vhid. */ 1694 if (carp_get_vhid_p != NULL) 1695 ifam->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1696 1697 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1698} 1699 1700static int 1701sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, 1702 struct walkarg *w, int len) 1703{ 1704 struct ifa_msghdr *ifam; 1705 1706 ifam = (struct ifa_msghdr *)w->w_tmem; 1707 ifam->ifam_addrs = info->rti_addrs; 1708 ifam->ifam_flags = ifa->ifa_flags; 1709 ifam->ifam_index = ifa->ifa_ifp->if_index; 1710 ifam->ifam_metric = ifa->ifa_metric; 1711 1712 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1713} 1714 1715static int 1716sysctl_iflist(int af, struct walkarg *w) 1717{ 1718 struct ifnet *ifp; 1719 struct ifaddr *ifa; 1720 struct rt_addrinfo info; 1721 int len, error = 0; 1722 1723 bzero((caddr_t)&info, sizeof(info)); 1724 IFNET_RLOCK(); 1725 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1726 if (w->w_arg && w->w_arg != ifp->if_index) 1727 continue; 1728 IF_ADDR_RLOCK(ifp); 1729 ifa = ifp->if_addr; 1730 info.rti_info[RTAX_IFP] = ifa->ifa_addr; 1731 len = rt_msg2(RTM_IFINFO, &info, NULL, w); 1732 info.rti_info[RTAX_IFP] = NULL; 1733 if (w->w_req && w->w_tmem) { 1734 if (w->w_op == NET_RT_IFLISTL) 1735 error = sysctl_iflist_ifml(ifp, &info, w, len); 1736 else 1737 error = sysctl_iflist_ifm(ifp, &info, w, len); 1738 if (error) 1739 goto done; 1740 } 1741 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) { 1742 if (af && af != ifa->ifa_addr->sa_family) 1743 continue; 1744 if (prison_if(w->w_req->td->td_ucred, 1745 ifa->ifa_addr) != 0) 1746 continue; 1747 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1748 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1749 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1750 len = rt_msg2(RTM_NEWADDR, &info, NULL, w); 1751 if (w->w_req && w->w_tmem) { 1752 if (w->w_op == NET_RT_IFLISTL) 1753 error = sysctl_iflist_ifaml(ifa, &info, 1754 w, len); 1755 else 1756 error = sysctl_iflist_ifam(ifa, &info, 1757 w, len); 1758 if (error) 1759 goto done; 1760 } 1761 } 1762 IF_ADDR_RUNLOCK(ifp); 1763 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1764 info.rti_info[RTAX_BRD] = NULL; 1765 } 1766done: 1767 if (ifp != NULL) 1768 IF_ADDR_RUNLOCK(ifp); 1769 IFNET_RUNLOCK(); 1770 return (error); 1771} 1772 1773static int 1774sysctl_ifmalist(int af, struct walkarg *w) 1775{ 1776 struct ifnet *ifp; 1777 struct ifmultiaddr *ifma; 1778 struct rt_addrinfo info; 1779 int len, error = 0; 1780 struct ifaddr *ifa; 1781 1782 bzero((caddr_t)&info, sizeof(info)); 1783 IFNET_RLOCK(); 1784 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1785 if (w->w_arg && w->w_arg != ifp->if_index) 1786 continue; 1787 ifa = ifp->if_addr; 1788 info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; 1789 IF_ADDR_RLOCK(ifp); 1790 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1791 if (af && af != ifma->ifma_addr->sa_family) 1792 continue; 1793 if (prison_if(w->w_req->td->td_ucred, 1794 ifma->ifma_addr) != 0) 1795 continue; 1796 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1797 info.rti_info[RTAX_GATEWAY] = 1798 (ifma->ifma_addr->sa_family != AF_LINK) ? 1799 ifma->ifma_lladdr : NULL; 1800 len = rt_msg2(RTM_NEWMADDR, &info, NULL, w); 1801 if (w->w_req && w->w_tmem) { 1802 struct ifma_msghdr *ifmam; 1803 1804 ifmam = (struct ifma_msghdr *)w->w_tmem; 1805 ifmam->ifmam_index = ifma->ifma_ifp->if_index; 1806 ifmam->ifmam_flags = 0; 1807 ifmam->ifmam_addrs = info.rti_addrs; 1808 error = SYSCTL_OUT(w->w_req, w->w_tmem, len); 1809 if (error) { 1810 IF_ADDR_RUNLOCK(ifp); 1811 goto done; 1812 } 1813 } 1814 } 1815 IF_ADDR_RUNLOCK(ifp); 1816 } 1817done: 1818 IFNET_RUNLOCK(); 1819 return (error); 1820} 1821 1822static int 1823sysctl_rtsock(SYSCTL_HANDLER_ARGS) 1824{ 1825 int *name = (int *)arg1; 1826 u_int namelen = arg2; 1827 struct radix_node_head *rnh = NULL; /* silence compiler. */ 1828 int i, lim, error = EINVAL; 1829 u_char af; 1830 struct walkarg w; 1831 1832 name ++; 1833 namelen--; 1834 if (req->newptr) 1835 return (EPERM); 1836 if (namelen != 3) 1837 return ((namelen < 3) ? EISDIR : ENOTDIR); 1838 af = name[0]; 1839 if (af > AF_MAX) 1840 return (EINVAL); 1841 bzero(&w, sizeof(w)); 1842 w.w_op = name[1]; 1843 w.w_arg = name[2]; 1844 w.w_req = req; 1845 1846 error = sysctl_wire_old_buffer(req, 0); 1847 if (error) 1848 return (error); 1849 switch (w.w_op) { 1850 1851 case NET_RT_DUMP: 1852 case NET_RT_FLAGS: 1853 if (af == 0) { /* dump all tables */ 1854 i = 1; 1855 lim = AF_MAX; 1856 } else /* dump only one table */ 1857 i = lim = af; 1858 1859 /* 1860 * take care of llinfo entries, the caller must 1861 * specify an AF 1862 */ 1863 if (w.w_op == NET_RT_FLAGS && 1864 (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) { 1865 if (af != 0) 1866 error = lltable_sysctl_dumparp(af, w.w_req); 1867 else 1868 error = EINVAL; 1869 break; 1870 } 1871 /* 1872 * take care of routing entries 1873 */ 1874 for (error = 0; error == 0 && i <= lim; i++) { 1875 rnh = rt_tables_get_rnh(req->td->td_proc->p_fibnum, i); 1876 if (rnh != NULL) { 1877 RADIX_NODE_HEAD_RLOCK(rnh); 1878 error = rnh->rnh_walktree(rnh, 1879 sysctl_dumpentry, &w); 1880 RADIX_NODE_HEAD_RUNLOCK(rnh); 1881 } else if (af != 0) 1882 error = EAFNOSUPPORT; 1883 } 1884 break; 1885 1886 case NET_RT_IFLIST: 1887 case NET_RT_IFLISTL: 1888 error = sysctl_iflist(af, &w); 1889 break; 1890 1891 case NET_RT_IFMALIST: 1892 error = sysctl_ifmalist(af, &w); 1893 break; 1894 } 1895 if (w.w_tmem) 1896 free(w.w_tmem, M_RTABLE); 1897 return (error); 1898} 1899 1900static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); 1901 1902/* 1903 * Definitions of protocols supported in the ROUTE domain. 1904 */ 1905 1906static struct domain routedomain; /* or at least forward */ 1907 1908static struct protosw routesw[] = { 1909{ 1910 .pr_type = SOCK_RAW, 1911 .pr_domain = &routedomain, 1912 .pr_flags = PR_ATOMIC|PR_ADDR, 1913 .pr_output = route_output, 1914 .pr_ctlinput = raw_ctlinput, 1915 .pr_init = raw_init, 1916 .pr_usrreqs = &route_usrreqs 1917} 1918}; 1919 1920static struct domain routedomain = { 1921 .dom_family = PF_ROUTE, 1922 .dom_name = "route", 1923 .dom_protosw = routesw, 1924 .dom_protoswNPROTOSW = &routesw[sizeof(routesw)/sizeof(routesw[0])] 1925}; 1926 1927VNET_DOMAIN_SET(route);
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