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/* $OpenBSD: ospfe.c,v 1.51 2017/08/12 16:27:50 benno Exp $ */ |
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/* |
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* Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> |
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* Copyright (c) 2004 Esben Norby <norby@openbsd.org> |
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* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/queue.h> |
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#include <netinet/in.h> |
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#include <arpa/inet.h> |
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#include <net/if_types.h> |
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#include <stdlib.h> |
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#include <signal.h> |
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#include <string.h> |
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#include <fcntl.h> |
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#include <pwd.h> |
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#include <unistd.h> |
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#include <event.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include "ospf6.h" |
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#include "ospf6d.h" |
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#include "ospfe.h" |
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#include "rde.h" |
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#include "control.h" |
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#include "log.h" |
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void ospfe_sig_handler(int, short, void *); |
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__dead void ospfe_shutdown(void); |
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void orig_rtr_lsa_all(struct area *); |
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void orig_rtr_lsa_area(struct area *); |
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struct iface *find_vlink(struct abr_rtr *); |
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struct ospfd_conf *oeconf = NULL, *nconf; |
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struct imsgev *iev_main; |
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struct imsgev *iev_rde; |
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int oe_nofib; |
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/* ARGSUSED */ |
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void |
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ospfe_sig_handler(int sig, short event, void *bula) |
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{ |
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switch (sig) { |
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case SIGINT: |
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case SIGTERM: |
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ospfe_shutdown(); |
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/* NOTREACHED */ |
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default: |
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fatalx("unexpected signal"); |
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} |
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} |
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/* ospf engine */ |
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pid_t |
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ospfe(struct ospfd_conf *xconf, int pipe_parent2ospfe[2], int pipe_ospfe2rde[2], |
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int pipe_parent2rde[2]) |
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{ |
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struct area *area; |
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struct iface *iface; |
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struct redistribute *r; |
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struct passwd *pw; |
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struct event ev_sigint, ev_sigterm; |
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pid_t pid; |
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switch (pid = fork()) { |
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case -1: |
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fatal("cannot fork"); |
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case 0: |
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break; |
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default: |
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return (pid); |
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} |
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/* create ospfd control socket outside chroot */ |
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if (control_init(xconf->csock) == -1) |
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fatalx("control socket setup failed"); |
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/* create the raw ip socket */ |
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if ((xconf->ospf_socket = socket(AF_INET6, |
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SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK, IPPROTO_OSPF)) == -1) |
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fatal("error creating raw socket"); |
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/* set some defaults */ |
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if (if_set_mcast_loop(xconf->ospf_socket) == -1) |
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fatal("if_set_mcast_loop"); |
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if (if_set_ipv6_checksum(xconf->ospf_socket) == -1) |
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fatal("if_set_ipv6_checksum"); |
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if (if_set_ipv6_pktinfo(xconf->ospf_socket, 1) == -1) |
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fatal("if_set_ipv6_pktinfo"); |
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if_set_recvbuf(xconf->ospf_socket); |
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oeconf = xconf; |
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if (oeconf->flags & OSPFD_FLAG_NO_FIB_UPDATE) |
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oe_nofib = 1; |
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if ((pw = getpwnam(OSPF6D_USER)) == NULL) |
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fatal("getpwnam"); |
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if (chroot(pw->pw_dir) == -1) |
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fatal("chroot"); |
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if (chdir("/") == -1) |
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fatal("chdir(\"/\")"); |
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setproctitle("ospf engine"); |
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/* |
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* XXX needed with fork+exec |
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* log_init(debug, LOG_DAEMON); |
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* log_setverbose(verbose); |
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*/ |
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ospfd_process = PROC_OSPF_ENGINE; |
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log_procinit(log_procnames[ospfd_process]); |
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if (setgroups(1, &pw->pw_gid) || |
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setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || |
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setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) |
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fatal("can't drop privileges"); |
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event_init(); |
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nbr_init(NBR_HASHSIZE); |
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lsa_cache_init(LSA_HASHSIZE); |
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/* setup signal handler */ |
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signal_set(&ev_sigint, SIGINT, ospfe_sig_handler, NULL); |
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signal_set(&ev_sigterm, SIGTERM, ospfe_sig_handler, NULL); |
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signal_add(&ev_sigint, NULL); |
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signal_add(&ev_sigterm, NULL); |
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signal(SIGPIPE, SIG_IGN); |
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signal(SIGHUP, SIG_IGN); |
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/* setup pipes */ |
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close(pipe_parent2ospfe[0]); |
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close(pipe_ospfe2rde[1]); |
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close(pipe_parent2rde[0]); |
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close(pipe_parent2rde[1]); |
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if ((iev_rde = malloc(sizeof(struct imsgev))) == NULL || |
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(iev_main = malloc(sizeof(struct imsgev))) == NULL) |
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fatal(NULL); |
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imsg_init(&iev_rde->ibuf, pipe_ospfe2rde[0]); |
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iev_rde->handler = ospfe_dispatch_rde; |
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imsg_init(&iev_main->ibuf, pipe_parent2ospfe[1]); |
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iev_main->handler = ospfe_dispatch_main; |
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/* setup event handler */ |
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iev_rde->events = EV_READ; |
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event_set(&iev_rde->ev, iev_rde->ibuf.fd, iev_rde->events, |
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iev_rde->handler, iev_rde); |
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event_add(&iev_rde->ev, NULL); |
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iev_main->events = EV_READ; |
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event_set(&iev_main->ev, iev_main->ibuf.fd, iev_main->events, |
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iev_main->handler, iev_main); |
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event_add(&iev_main->ev, NULL); |
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event_set(&oeconf->ev, oeconf->ospf_socket, EV_READ|EV_PERSIST, |
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recv_packet, oeconf); |
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event_add(&oeconf->ev, NULL); |
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/* remove unneeded config stuff */ |
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while ((r = SIMPLEQ_FIRST(&oeconf->redist_list)) != NULL) { |
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SIMPLEQ_REMOVE_HEAD(&oeconf->redist_list, entry); |
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free(r); |
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} |
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183 |
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/* listen on ospfd control socket */ |
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TAILQ_INIT(&ctl_conns); |
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control_listen(); |
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if ((pkt_ptr = calloc(1, READ_BUF_SIZE)) == NULL) |
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fatal("ospfe"); |
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/* start interfaces */ |
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LIST_FOREACH(area, &oeconf->area_list, entry) { |
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ospfe_demote_area(area, 0); |
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LIST_FOREACH(iface, &area->iface_list, entry) |
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if_start(xconf, iface); |
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} |
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event_dispatch(); |
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ospfe_shutdown(); |
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/* NOTREACHED */ |
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return (0); |
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} |
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__dead void |
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ospfe_shutdown(void) |
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{ |
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struct area *area; |
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struct iface *iface; |
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/* close pipes */ |
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msgbuf_write(&iev_rde->ibuf.w); |
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msgbuf_clear(&iev_rde->ibuf.w); |
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close(iev_rde->ibuf.fd); |
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msgbuf_write(&iev_main->ibuf.w); |
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msgbuf_clear(&iev_main->ibuf.w); |
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close(iev_main->ibuf.fd); |
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/* stop all interfaces and remove all areas */ |
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while ((area = LIST_FIRST(&oeconf->area_list)) != NULL) { |
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LIST_FOREACH(iface, &area->iface_list, entry) { |
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if (if_fsm(iface, IF_EVT_DOWN)) { |
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log_debug("error stopping interface %s", |
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iface->name); |
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} |
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} |
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LIST_REMOVE(area, entry); |
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area_del(area); |
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} |
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close(oeconf->ospf_socket); |
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/* clean up */ |
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free(iev_rde); |
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free(iev_main); |
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free(oeconf); |
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free(pkt_ptr); |
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log_info("ospf engine exiting"); |
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_exit(0); |
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} |
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/* imesg */ |
243 |
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int |
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ospfe_imsg_compose_parent(int type, pid_t pid, void *data, u_int16_t datalen) |
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{ |
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return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); |
247 |
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} |
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int |
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ospfe_imsg_compose_rde(int type, u_int32_t peerid, pid_t pid, |
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void *data, u_int16_t datalen) |
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{ |
253 |
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return (imsg_compose_event(iev_rde, type, peerid, pid, -1, |
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data, datalen)); |
255 |
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} |
256 |
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257 |
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/* ARGSUSED */ |
258 |
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void |
259 |
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ospfe_dispatch_main(int fd, short event, void *bula) |
260 |
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{ |
261 |
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static struct area *narea; |
262 |
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struct area *area; |
263 |
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struct iface *iface, *ifp; |
264 |
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struct ifaddrchange *ifc; |
265 |
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struct iface_addr *ia, *nia; |
266 |
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struct imsg imsg; |
267 |
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struct imsgev *iev = bula; |
268 |
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struct imsgbuf *ibuf = &iev->ibuf; |
269 |
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int n, stub_changed, shut = 0, isvalid, wasvalid; |
270 |
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unsigned int ifindex; |
271 |
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272 |
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if (event & EV_READ) { |
273 |
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if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) |
274 |
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fatal("imsg_read error"); |
275 |
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if (n == 0) /* connection closed */ |
276 |
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shut = 1; |
277 |
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} |
278 |
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if (event & EV_WRITE) { |
279 |
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if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) |
280 |
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fatal("msgbuf_write"); |
281 |
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if (n == 0) /* connection closed */ |
282 |
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shut = 1; |
283 |
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} |
284 |
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285 |
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for (;;) { |
286 |
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if ((n = imsg_get(ibuf, &imsg)) == -1) |
287 |
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fatal("ospfe_dispatch_main: imsg_get error"); |
288 |
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if (n == 0) |
289 |
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break; |
290 |
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291 |
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switch (imsg.hdr.type) { |
292 |
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case IMSG_IFINFO: |
293 |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
294 |
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sizeof(struct iface)) |
295 |
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fatalx("IFINFO imsg with wrong len"); |
296 |
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ifp = imsg.data; |
297 |
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298 |
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iface = if_find(ifp->ifindex); |
299 |
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if (iface == NULL) |
300 |
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fatalx("interface lost in ospfe"); |
301 |
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302 |
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wasvalid = (iface->flags & IFF_UP) && |
303 |
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LINK_STATE_IS_UP(iface->linkstate); |
304 |
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305 |
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if_update(iface, ifp->mtu, ifp->flags, ifp->if_type, |
306 |
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ifp->linkstate, ifp->baudrate); |
307 |
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308 |
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isvalid = (iface->flags & IFF_UP) && |
309 |
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LINK_STATE_IS_UP(iface->linkstate); |
310 |
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311 |
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if (wasvalid == isvalid) |
312 |
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break; |
313 |
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314 |
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if (isvalid) { |
315 |
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if_fsm(iface, IF_EVT_UP); |
316 |
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log_warnx("interface %s up", iface->name); |
317 |
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} else { |
318 |
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if_fsm(iface, IF_EVT_DOWN); |
319 |
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log_warnx("interface %s down", iface->name); |
320 |
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} |
321 |
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break; |
322 |
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case IMSG_IFADD: |
323 |
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if ((iface = malloc(sizeof(struct iface))) == NULL) |
324 |
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fatal(NULL); |
325 |
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memcpy(iface, imsg.data, sizeof(struct iface)); |
326 |
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327 |
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LIST_INIT(&iface->nbr_list); |
328 |
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TAILQ_INIT(&iface->ls_ack_list); |
329 |
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RB_INIT(&iface->lsa_tree); |
330 |
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331 |
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area = area_find(oeconf, iface->area_id); |
332 |
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LIST_INSERT_HEAD(&area->iface_list, iface, entry); |
333 |
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break; |
334 |
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case IMSG_IFDELETE: |
335 |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
336 |
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sizeof(ifindex)) |
337 |
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fatalx("IFDELETE imsg with wrong len"); |
338 |
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339 |
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memcpy(&ifindex, imsg.data, sizeof(ifindex)); |
340 |
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iface = if_find(ifindex); |
341 |
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if (iface == NULL) |
342 |
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fatalx("interface lost in ospfe"); |
343 |
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344 |
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LIST_REMOVE(iface, entry); |
345 |
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if_del(iface); |
346 |
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break; |
347 |
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case IMSG_IFADDRNEW: |
348 |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
349 |
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sizeof(struct ifaddrchange)) |
350 |
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fatalx("IFADDRNEW imsg with wrong len"); |
351 |
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ifc = imsg.data; |
352 |
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353 |
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iface = if_find(ifc->ifindex); |
354 |
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if (iface == NULL) |
355 |
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fatalx("IFADDRNEW interface lost in ospfe"); |
356 |
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|
357 |
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if ((ia = calloc(1, sizeof(struct iface_addr))) == |
358 |
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NULL) |
359 |
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fatal("ospfe_dispatch_main IFADDRNEW"); |
360 |
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ia->addr = ifc->addr; |
361 |
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ia->dstbrd = ifc->dstbrd; |
362 |
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ia->prefixlen = ifc->prefixlen; |
363 |
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364 |
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TAILQ_INSERT_TAIL(&iface->ifa_list, ia, entry); |
365 |
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orig_link_lsa(iface); |
366 |
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break; |
367 |
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case IMSG_IFADDRDEL: |
368 |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
369 |
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sizeof(struct ifaddrchange)) |
370 |
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fatalx("IFADDRDEL imsg with wrong len"); |
371 |
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ifc = imsg.data; |
372 |
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|
373 |
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iface = if_find(ifc->ifindex); |
374 |
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if (iface == NULL) |
375 |
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fatalx("IFADDRDEL interface lost in ospfe"); |
376 |
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|
377 |
|
|
for (ia = TAILQ_FIRST(&iface->ifa_list); ia != NULL; |
378 |
|
|
ia = nia) { |
379 |
|
|
nia = TAILQ_NEXT(ia, entry); |
380 |
|
|
|
381 |
|
|
if (IN6_ARE_ADDR_EQUAL(&ia->addr, |
382 |
|
|
&ifc->addr)) { |
383 |
|
|
TAILQ_REMOVE(&iface->ifa_list, ia, |
384 |
|
|
entry); |
385 |
|
|
free(ia); |
386 |
|
|
break; |
387 |
|
|
} |
388 |
|
|
} |
389 |
|
|
orig_link_lsa(iface); |
390 |
|
|
break; |
391 |
|
|
case IMSG_RECONF_CONF: |
392 |
|
|
if ((nconf = malloc(sizeof(struct ospfd_conf))) == |
393 |
|
|
NULL) |
394 |
|
|
fatal(NULL); |
395 |
|
|
memcpy(nconf, imsg.data, sizeof(struct ospfd_conf)); |
396 |
|
|
|
397 |
|
|
LIST_INIT(&nconf->area_list); |
398 |
|
|
LIST_INIT(&nconf->cand_list); |
399 |
|
|
break; |
400 |
|
|
case IMSG_RECONF_AREA: |
401 |
|
|
if ((narea = area_new()) == NULL) |
402 |
|
|
fatal(NULL); |
403 |
|
|
memcpy(narea, imsg.data, sizeof(struct area)); |
404 |
|
|
|
405 |
|
|
LIST_INIT(&narea->iface_list); |
406 |
|
|
LIST_INIT(&narea->nbr_list); |
407 |
|
|
RB_INIT(&narea->lsa_tree); |
408 |
|
|
|
409 |
|
|
LIST_INSERT_HEAD(&nconf->area_list, narea, entry); |
410 |
|
|
break; |
411 |
|
|
case IMSG_RECONF_END: |
412 |
|
|
if ((oeconf->flags & OSPFD_FLAG_STUB_ROUTER) != |
413 |
|
|
(nconf->flags & OSPFD_FLAG_STUB_ROUTER)) |
414 |
|
|
stub_changed = 1; |
415 |
|
|
else |
416 |
|
|
stub_changed = 0; |
417 |
|
|
merge_config(oeconf, nconf); |
418 |
|
|
nconf = NULL; |
419 |
|
|
if (stub_changed) |
420 |
|
|
orig_rtr_lsa_all(NULL); |
421 |
|
|
break; |
422 |
|
|
case IMSG_CTL_KROUTE: |
423 |
|
|
case IMSG_CTL_KROUTE_ADDR: |
424 |
|
|
case IMSG_CTL_END: |
425 |
|
|
control_imsg_relay(&imsg); |
426 |
|
|
break; |
427 |
|
|
default: |
428 |
|
|
log_debug("ospfe_dispatch_main: error handling imsg %d", |
429 |
|
|
imsg.hdr.type); |
430 |
|
|
break; |
431 |
|
|
} |
432 |
|
|
imsg_free(&imsg); |
433 |
|
|
} |
434 |
|
|
if (!shut) |
435 |
|
|
imsg_event_add(iev); |
436 |
|
|
else { |
437 |
|
|
/* this pipe is dead, so remove the event handler */ |
438 |
|
|
event_del(&iev->ev); |
439 |
|
|
event_loopexit(NULL); |
440 |
|
|
} |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
/* ARGSUSED */ |
444 |
|
|
void |
445 |
|
|
ospfe_dispatch_rde(int fd, short event, void *bula) |
446 |
|
|
{ |
447 |
|
|
struct lsa_hdr lsa_hdr; |
448 |
|
|
struct lsa_link lsa_link; |
449 |
|
|
struct imsgev *iev = bula; |
450 |
|
|
struct imsgbuf *ibuf = &iev->ibuf; |
451 |
|
|
struct nbr *nbr; |
452 |
|
|
struct lsa_hdr *lhp; |
453 |
|
|
struct lsa_ref *ref; |
454 |
|
|
struct area *area; |
455 |
|
|
struct iface *iface; |
456 |
|
|
struct lsa_entry *le; |
457 |
|
|
struct imsg imsg; |
458 |
|
|
struct abr_rtr ar; |
459 |
|
|
int n, noack = 0, shut = 0; |
460 |
|
|
u_int16_t l, age; |
461 |
|
|
|
462 |
|
|
if (event & EV_READ) { |
463 |
|
|
if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) |
464 |
|
|
fatal("imsg_read error"); |
465 |
|
|
if (n == 0) /* connection closed */ |
466 |
|
|
shut = 1; |
467 |
|
|
} |
468 |
|
|
if (event & EV_WRITE) { |
469 |
|
|
if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) |
470 |
|
|
fatal("msgbuf_write"); |
471 |
|
|
if (n == 0) /* connection closed */ |
472 |
|
|
shut = 1; |
473 |
|
|
} |
474 |
|
|
|
475 |
|
|
for (;;) { |
476 |
|
|
if ((n = imsg_get(ibuf, &imsg)) == -1) |
477 |
|
|
fatal("ospfe_dispatch_rde: imsg_get error"); |
478 |
|
|
if (n == 0) |
479 |
|
|
break; |
480 |
|
|
|
481 |
|
|
switch (imsg.hdr.type) { |
482 |
|
|
case IMSG_DD: |
483 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
484 |
|
|
if (nbr == NULL) |
485 |
|
|
break; |
486 |
|
|
|
487 |
|
|
/* put these on my ls_req_list for retrieval */ |
488 |
|
|
lhp = lsa_hdr_new(); |
489 |
|
|
memcpy(lhp, imsg.data, sizeof(*lhp)); |
490 |
|
|
ls_req_list_add(nbr, lhp); |
491 |
|
|
break; |
492 |
|
|
case IMSG_DD_END: |
493 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
494 |
|
|
if (nbr == NULL) |
495 |
|
|
break; |
496 |
|
|
|
497 |
|
|
nbr->dd_pending--; |
498 |
|
|
if (nbr->dd_pending == 0 && nbr->state & NBR_STA_LOAD) { |
499 |
|
|
if (ls_req_list_empty(nbr)) |
500 |
|
|
nbr_fsm(nbr, NBR_EVT_LOAD_DONE); |
501 |
|
|
else |
502 |
|
|
start_ls_req_tx_timer(nbr); |
503 |
|
|
} |
504 |
|
|
break; |
505 |
|
|
case IMSG_DB_SNAPSHOT: |
506 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
507 |
|
|
if (nbr == NULL) |
508 |
|
|
break; |
509 |
|
|
if (nbr->state != NBR_STA_SNAP) /* discard */ |
510 |
|
|
break; |
511 |
|
|
|
512 |
|
|
/* add LSA header to the neighbor db_sum_list */ |
513 |
|
|
lhp = lsa_hdr_new(); |
514 |
|
|
memcpy(lhp, imsg.data, sizeof(*lhp)); |
515 |
|
|
db_sum_list_add(nbr, lhp); |
516 |
|
|
break; |
517 |
|
|
case IMSG_DB_END: |
518 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
519 |
|
|
if (nbr == NULL) |
520 |
|
|
break; |
521 |
|
|
|
522 |
|
|
nbr->dd_snapshot = 0; |
523 |
|
|
if (nbr->state != NBR_STA_SNAP) |
524 |
|
|
break; |
525 |
|
|
|
526 |
|
|
/* snapshot done, start tx of dd packets */ |
527 |
|
|
nbr_fsm(nbr, NBR_EVT_SNAP_DONE); |
528 |
|
|
break; |
529 |
|
|
case IMSG_LS_FLOOD: |
530 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
531 |
|
|
if (nbr == NULL) |
532 |
|
|
break; |
533 |
|
|
|
534 |
|
|
l = imsg.hdr.len - IMSG_HEADER_SIZE; |
535 |
|
|
if (l < sizeof(lsa_hdr)) |
536 |
|
|
fatalx("ospfe_dispatch_rde: " |
537 |
|
|
"bad imsg size"); |
538 |
|
|
memcpy(&lsa_hdr, imsg.data, sizeof(lsa_hdr)); |
539 |
|
|
|
540 |
|
|
ref = lsa_cache_add(imsg.data, l); |
541 |
|
|
|
542 |
|
|
if (lsa_hdr.type == htons(LSA_TYPE_EXTERNAL)) { |
543 |
|
|
/* |
544 |
|
|
* flood on all areas but stub areas and |
545 |
|
|
* virtual links |
546 |
|
|
*/ |
547 |
|
|
LIST_FOREACH(area, &oeconf->area_list, entry) { |
548 |
|
|
if (area->stub) |
549 |
|
|
continue; |
550 |
|
|
LIST_FOREACH(iface, &area->iface_list, |
551 |
|
|
entry) { |
552 |
|
|
noack += lsa_flood(iface, nbr, |
553 |
|
|
&lsa_hdr, imsg.data); |
554 |
|
|
} |
555 |
|
|
} |
556 |
|
|
} else if (lsa_hdr.type == htons(LSA_TYPE_LINK)) { |
557 |
|
|
/* |
558 |
|
|
* Save link-LSA options of neighbor. |
559 |
|
|
* This is needed to originate network-LSA. |
560 |
|
|
*/ |
561 |
|
|
if (l - sizeof(lsa_hdr) < sizeof(lsa_link)) |
562 |
|
|
fatalx("ospfe_dispatch_rde: " |
563 |
|
|
"bad imsg link size"); |
564 |
|
|
memcpy(&lsa_link, (char *)imsg.data + |
565 |
|
|
sizeof(lsa_hdr), sizeof(lsa_link)); |
566 |
|
|
nbr->link_options = lsa_link.opts & |
567 |
|
|
htonl(LSA_24_MASK); |
568 |
|
|
|
569 |
|
|
/* |
570 |
|
|
* flood on interface only |
571 |
|
|
*/ |
572 |
|
|
noack += lsa_flood(nbr->iface, nbr, |
573 |
|
|
&lsa_hdr, imsg.data); |
574 |
|
|
} else { |
575 |
|
|
/* |
576 |
|
|
* flood on all area interfaces on |
577 |
|
|
* area 0.0.0.0 include also virtual links. |
578 |
|
|
*/ |
579 |
|
|
if ((area = area_find(oeconf, |
580 |
|
|
nbr->iface->area_id)) == NULL) |
581 |
|
|
fatalx("interface lost area"); |
582 |
|
|
LIST_FOREACH(iface, &area->iface_list, entry) { |
583 |
|
|
noack += lsa_flood(iface, nbr, |
584 |
|
|
&lsa_hdr, imsg.data); |
585 |
|
|
} |
586 |
|
|
/* XXX virtual links */ |
587 |
|
|
} |
588 |
|
|
|
589 |
|
|
/* remove from ls_req_list */ |
590 |
|
|
le = ls_req_list_get(nbr, &lsa_hdr); |
591 |
|
|
if (!(nbr->state & NBR_STA_FULL) && le != NULL) { |
592 |
|
|
ls_req_list_free(nbr, le); |
593 |
|
|
/* |
594 |
|
|
* XXX no need to ack requested lsa |
595 |
|
|
* the problem is that the RFC is very |
596 |
|
|
* unclear about this. |
597 |
|
|
*/ |
598 |
|
|
noack = 1; |
599 |
|
|
} |
600 |
|
|
|
601 |
|
|
if (!noack && nbr->iface != NULL && |
602 |
|
|
nbr->iface->self != nbr) { |
603 |
|
|
if (!(nbr->iface->state & IF_STA_BACKUP) || |
604 |
|
|
nbr->iface->dr == nbr) { |
605 |
|
|
/* delayed ack */ |
606 |
|
|
lhp = lsa_hdr_new(); |
607 |
|
|
memcpy(lhp, &lsa_hdr, sizeof(*lhp)); |
608 |
|
|
ls_ack_list_add(nbr->iface, lhp); |
609 |
|
|
} |
610 |
|
|
} |
611 |
|
|
|
612 |
|
|
lsa_cache_put(ref, nbr); |
613 |
|
|
break; |
614 |
|
|
case IMSG_LS_UPD: |
615 |
|
|
case IMSG_LS_SNAP: |
616 |
|
|
/* |
617 |
|
|
* IMSG_LS_UPD is used in two cases: |
618 |
|
|
* 1. as response to ls requests |
619 |
|
|
* 2. as response to ls updates where the DB |
620 |
|
|
* is newer then the sent LSA |
621 |
|
|
* IMSG_LS_SNAP is used in one case: |
622 |
|
|
* in EXSTART when the LSA has age MaxAge |
623 |
|
|
*/ |
624 |
|
|
l = imsg.hdr.len - IMSG_HEADER_SIZE; |
625 |
|
|
if (l < sizeof(lsa_hdr)) |
626 |
|
|
fatalx("ospfe_dispatch_rde: " |
627 |
|
|
"bad imsg size"); |
628 |
|
|
|
629 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
630 |
|
|
if (nbr == NULL) |
631 |
|
|
break; |
632 |
|
|
|
633 |
|
|
if (nbr->iface->self == nbr) |
634 |
|
|
break; |
635 |
|
|
|
636 |
|
|
if (imsg.hdr.type == IMSG_LS_SNAP && |
637 |
|
|
nbr->state != NBR_STA_SNAP) |
638 |
|
|
break; |
639 |
|
|
|
640 |
|
|
memcpy(&age, imsg.data, sizeof(age)); |
641 |
|
|
ref = lsa_cache_add(imsg.data, l); |
642 |
|
|
if (ntohs(age) >= MAX_AGE) |
643 |
|
|
/* add to retransmit list */ |
644 |
|
|
ls_retrans_list_add(nbr, imsg.data, 0, 0); |
645 |
|
|
else |
646 |
|
|
ls_retrans_list_add(nbr, imsg.data, 0, 1); |
647 |
|
|
|
648 |
|
|
lsa_cache_put(ref, nbr); |
649 |
|
|
break; |
650 |
|
|
case IMSG_LS_ACK: |
651 |
|
|
/* |
652 |
|
|
* IMSG_LS_ACK is used in two cases: |
653 |
|
|
* 1. LSA was a duplicate |
654 |
|
|
* 2. LS age is MaxAge and there is no current |
655 |
|
|
* instance in the DB plus no neighbor in state |
656 |
|
|
* Exchange or Loading |
657 |
|
|
*/ |
658 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
659 |
|
|
if (nbr == NULL) |
660 |
|
|
break; |
661 |
|
|
|
662 |
|
|
if (nbr->iface->self == nbr) |
663 |
|
|
break; |
664 |
|
|
|
665 |
|
|
if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(lsa_hdr)) |
666 |
|
|
fatalx("ospfe_dispatch_rde: bad imsg size"); |
667 |
|
|
memcpy(&lsa_hdr, imsg.data, sizeof(lsa_hdr)); |
668 |
|
|
|
669 |
|
|
/* for case one check for implied acks */ |
670 |
|
|
if (nbr->iface->state & IF_STA_DROTHER) |
671 |
|
|
if (ls_retrans_list_del(nbr->iface->self, |
672 |
|
|
&lsa_hdr) == 0) |
673 |
|
|
break; |
674 |
|
|
if (ls_retrans_list_del(nbr, &lsa_hdr) == 0) |
675 |
|
|
break; |
676 |
|
|
|
677 |
|
|
/* send a direct acknowledgement */ |
678 |
|
|
send_ls_ack(nbr->iface, nbr->addr, imsg.data, |
679 |
|
|
imsg.hdr.len - IMSG_HEADER_SIZE); |
680 |
|
|
|
681 |
|
|
break; |
682 |
|
|
case IMSG_LS_BADREQ: |
683 |
|
|
nbr = nbr_find_peerid(imsg.hdr.peerid); |
684 |
|
|
if (nbr == NULL) |
685 |
|
|
break; |
686 |
|
|
|
687 |
|
|
if (nbr->iface->self == nbr) |
688 |
|
|
fatalx("ospfe_dispatch_rde: " |
689 |
|
|
"dummy neighbor got BADREQ"); |
690 |
|
|
|
691 |
|
|
nbr_fsm(nbr, NBR_EVT_BAD_LS_REQ); |
692 |
|
|
break; |
693 |
|
|
case IMSG_ABR_UP: |
694 |
|
|
memcpy(&ar, imsg.data, sizeof(ar)); |
695 |
|
|
|
696 |
|
|
if ((iface = find_vlink(&ar)) != NULL && |
697 |
|
|
iface->state == IF_STA_DOWN) |
698 |
|
|
if (if_fsm(iface, IF_EVT_UP)) { |
699 |
|
|
log_debug("error starting interface %s", |
700 |
|
|
iface->name); |
701 |
|
|
} |
702 |
|
|
break; |
703 |
|
|
case IMSG_ABR_DOWN: |
704 |
|
|
memcpy(&ar, imsg.data, sizeof(ar)); |
705 |
|
|
|
706 |
|
|
if ((iface = find_vlink(&ar)) != NULL && |
707 |
|
|
iface->state == IF_STA_POINTTOPOINT) |
708 |
|
|
if (if_fsm(iface, IF_EVT_DOWN)) { |
709 |
|
|
log_debug("error stopping interface %s", |
710 |
|
|
iface->name); |
711 |
|
|
} |
712 |
|
|
break; |
713 |
|
|
case IMSG_CTL_AREA: |
714 |
|
|
case IMSG_CTL_IFACE: |
715 |
|
|
case IMSG_CTL_END: |
716 |
|
|
case IMSG_CTL_SHOW_DATABASE: |
717 |
|
|
case IMSG_CTL_SHOW_DB_EXT: |
718 |
|
|
case IMSG_CTL_SHOW_DB_LINK: |
719 |
|
|
case IMSG_CTL_SHOW_DB_NET: |
720 |
|
|
case IMSG_CTL_SHOW_DB_RTR: |
721 |
|
|
case IMSG_CTL_SHOW_DB_INTRA: |
722 |
|
|
case IMSG_CTL_SHOW_DB_SELF: |
723 |
|
|
case IMSG_CTL_SHOW_DB_SUM: |
724 |
|
|
case IMSG_CTL_SHOW_DB_ASBR: |
725 |
|
|
case IMSG_CTL_SHOW_RIB: |
726 |
|
|
case IMSG_CTL_SHOW_SUM: |
727 |
|
|
case IMSG_CTL_SHOW_SUM_AREA: |
728 |
|
|
control_imsg_relay(&imsg); |
729 |
|
|
break; |
730 |
|
|
default: |
731 |
|
|
log_debug("ospfe_dispatch_rde: error handling imsg %d", |
732 |
|
|
imsg.hdr.type); |
733 |
|
|
break; |
734 |
|
|
} |
735 |
|
|
imsg_free(&imsg); |
736 |
|
|
} |
737 |
|
|
if (!shut) |
738 |
|
|
imsg_event_add(iev); |
739 |
|
|
else { |
740 |
|
|
/* this pipe is dead, so remove the event handler */ |
741 |
|
|
event_del(&iev->ev); |
742 |
|
|
event_loopexit(NULL); |
743 |
|
|
} |
744 |
|
|
} |
745 |
|
|
|
746 |
|
|
struct iface * |
747 |
|
|
find_vlink(struct abr_rtr *ar) |
748 |
|
|
{ |
749 |
|
|
struct area *area; |
750 |
|
|
struct iface *iface = NULL; |
751 |
|
|
|
752 |
|
|
LIST_FOREACH(area, &oeconf->area_list, entry) |
753 |
|
|
LIST_FOREACH(iface, &area->iface_list, entry) |
754 |
|
|
if (iface->abr_id.s_addr == ar->abr_id.s_addr && |
755 |
|
|
iface->type == IF_TYPE_VIRTUALLINK && |
756 |
|
|
//XXX iface->area->id.s_addr == ar->area.s_addr) { |
757 |
|
|
iface->area_id.s_addr == ar->area.s_addr) { |
758 |
|
|
//XXX iface->dst.s_addr = ar->dst_ip.s_addr; |
759 |
|
|
iface->dst = ar->dst_ip; |
760 |
|
|
//XXX iface->addr.s_addr = ar->addr.s_addr; |
761 |
|
|
iface->addr = ar->addr; |
762 |
|
|
iface->metric = ar->metric; |
763 |
|
|
|
764 |
|
|
return (iface); |
765 |
|
|
} |
766 |
|
|
|
767 |
|
|
return (iface); |
768 |
|
|
} |
769 |
|
|
|
770 |
|
|
void |
771 |
|
|
orig_rtr_lsa_all(struct area *area) |
772 |
|
|
{ |
773 |
|
|
struct area *a; |
774 |
|
|
|
775 |
|
|
/* |
776 |
|
|
* update all router LSA in all areas except area itself, |
777 |
|
|
* as this update is already running. |
778 |
|
|
*/ |
779 |
|
|
LIST_FOREACH(a, &oeconf->area_list, entry) |
780 |
|
|
if (a != area) |
781 |
|
|
orig_rtr_lsa_area(a); |
782 |
|
|
} |
783 |
|
|
|
784 |
|
|
void |
785 |
|
|
orig_rtr_lsa(struct iface *iface) |
786 |
|
|
{ |
787 |
|
|
struct area *area; |
788 |
|
|
|
789 |
|
|
if ((area = area_find(oeconf, iface->area_id)) == NULL) |
790 |
|
|
fatalx("interface lost area"); |
791 |
|
|
orig_rtr_lsa_area(area); |
792 |
|
|
} |
793 |
|
|
|
794 |
|
|
void |
795 |
|
|
orig_rtr_lsa_area(struct area *area) |
796 |
|
|
{ |
797 |
|
|
struct lsa_hdr lsa_hdr; |
798 |
|
|
struct lsa_rtr lsa_rtr; |
799 |
|
|
struct lsa_rtr_link rtr_link; |
800 |
|
|
struct iface *iface; |
801 |
|
|
struct ibuf *buf; |
802 |
|
|
struct nbr *nbr, *self = NULL; |
803 |
|
|
u_int32_t flags; |
804 |
|
|
u_int16_t chksum; |
805 |
|
|
u_int8_t border, virtual = 0; |
806 |
|
|
|
807 |
|
|
log_debug("orig_rtr_lsa: area %s", inet_ntoa(area->id)); |
808 |
|
|
|
809 |
|
|
/* XXX IBUF_READ_SIZE */ |
810 |
|
|
if ((buf = ibuf_dynamic(sizeof(lsa_hdr), IBUF_READ_SIZE)) == NULL) |
811 |
|
|
fatal("orig_rtr_lsa"); |
812 |
|
|
|
813 |
|
|
/* reserve space for LSA header and LSA Router header */ |
814 |
|
|
if (ibuf_reserve(buf, sizeof(lsa_hdr)) == NULL) |
815 |
|
|
fatal("orig_rtr_lsa: ibuf_reserve failed"); |
816 |
|
|
|
817 |
|
|
if (ibuf_reserve(buf, sizeof(lsa_rtr)) == NULL) |
818 |
|
|
fatal("orig_rtr_lsa: ibuf_reserve failed"); |
819 |
|
|
|
820 |
|
|
/* links */ |
821 |
|
|
LIST_FOREACH(iface, &area->iface_list, entry) { |
822 |
|
|
if (self == NULL && iface->self != NULL) |
823 |
|
|
self = iface->self; |
824 |
|
|
|
825 |
|
|
bzero(&rtr_link, sizeof(rtr_link)); |
826 |
|
|
|
827 |
|
|
switch (iface->type) { |
828 |
|
|
case IF_TYPE_POINTOPOINT: |
829 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, entry) |
830 |
|
|
if (nbr != iface->self && |
831 |
|
|
nbr->state & NBR_STA_FULL) |
832 |
|
|
break; |
833 |
|
|
if (nbr && iface->state & IF_STA_POINTTOPOINT) { |
834 |
|
|
log_debug("orig_rtr_lsa: point-to-point, " |
835 |
|
|
"interface %s", iface->name); |
836 |
|
|
rtr_link.type = LINK_TYPE_POINTTOPOINT; |
837 |
|
|
rtr_link.metric = htons(iface->metric); |
838 |
|
|
rtr_link.iface_id = htonl(iface->ifindex); |
839 |
|
|
rtr_link.nbr_iface_id = htonl(nbr->iface_id); |
840 |
|
|
rtr_link.nbr_rtr_id = nbr->id.s_addr; |
841 |
|
|
if (ibuf_add(buf, &rtr_link, sizeof(rtr_link))) |
842 |
|
|
fatalx("orig_rtr_lsa: ibuf_add failed"); |
843 |
|
|
} |
844 |
|
|
continue; |
845 |
|
|
case IF_TYPE_BROADCAST: |
846 |
|
|
case IF_TYPE_NBMA: |
847 |
|
|
if ((iface->state & IF_STA_MULTI)) { |
848 |
|
|
if (iface->dr == iface->self) { |
849 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, |
850 |
|
|
entry) |
851 |
|
|
if (nbr != iface->self && |
852 |
|
|
nbr->state & NBR_STA_FULL) |
853 |
|
|
break; |
854 |
|
|
} else |
855 |
|
|
nbr = iface->dr; |
856 |
|
|
|
857 |
|
|
if (nbr && nbr->state & NBR_STA_FULL) { |
858 |
|
|
log_debug("orig_rtr_lsa: transit net, " |
859 |
|
|
"interface %s", iface->name); |
860 |
|
|
|
861 |
|
|
rtr_link.type = LINK_TYPE_TRANSIT_NET; |
862 |
|
|
rtr_link.metric = htons(iface->metric); |
863 |
|
|
rtr_link.iface_id = htonl(iface->ifindex); |
864 |
|
|
rtr_link.nbr_iface_id = htonl(iface->dr->iface_id); |
865 |
|
|
rtr_link.nbr_rtr_id = iface->dr->id.s_addr; |
866 |
|
|
if (ibuf_add(buf, &rtr_link, |
867 |
|
|
sizeof(rtr_link))) |
868 |
|
|
fatalx("orig_rtr_lsa: " |
869 |
|
|
"ibuf_add failed"); |
870 |
|
|
break; |
871 |
|
|
} |
872 |
|
|
} |
873 |
|
|
break; |
874 |
|
|
#if 0 /* TODO virtualllink/pointtomulti */ |
875 |
|
|
case IF_TYPE_VIRTUALLINK: |
876 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, entry) { |
877 |
|
|
if (nbr != iface->self && |
878 |
|
|
nbr->state & NBR_STA_FULL) |
879 |
|
|
break; |
880 |
|
|
} |
881 |
|
|
if (nbr) { |
882 |
|
|
rtr_link.id = nbr->id.s_addr; |
883 |
|
|
//XXX rtr_link.data = iface->addr.s_addr; |
884 |
|
|
rtr_link.type = LINK_TYPE_VIRTUAL; |
885 |
|
|
/* RFC 3137: stub router support */ |
886 |
|
|
if (oeconf->flags & OSPFD_FLAG_STUB_ROUTER || |
887 |
|
|
oe_nofib) |
888 |
|
|
rtr_link.metric = 0xffff; |
889 |
|
|
else |
890 |
|
|
rtr_link.metric = htons(iface->metric); |
891 |
|
|
virtual = 1; |
892 |
|
|
if (ibuf_add(buf, &rtr_link, sizeof(rtr_link))) |
893 |
|
|
fatalx("orig_rtr_lsa: ibuf_add failed"); |
894 |
|
|
|
895 |
|
|
log_debug("orig_rtr_lsa: virtual link, " |
896 |
|
|
"interface %s", iface->name); |
897 |
|
|
} |
898 |
|
|
continue; |
899 |
|
|
case IF_TYPE_POINTOMULTIPOINT: |
900 |
|
|
log_debug("orig_rtr_lsa: stub net, " |
901 |
|
|
"interface %s", iface->name); |
902 |
|
|
//XXX rtr_link.id = iface->addr.s_addr; |
903 |
|
|
rtr_link.data = 0xffffffff; |
904 |
|
|
rtr_link.type = LINK_TYPE_STUB_NET; |
905 |
|
|
rtr_link.metric = htons(iface->metric); |
906 |
|
|
if (ibuf_add(buf, &rtr_link, sizeof(rtr_link))) |
907 |
|
|
fatalx("orig_rtr_lsa: ibuf_add failed"); |
908 |
|
|
|
909 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, entry) { |
910 |
|
|
if (nbr != iface->self && |
911 |
|
|
nbr->state & NBR_STA_FULL) { |
912 |
|
|
bzero(&rtr_link, sizeof(rtr_link)); |
913 |
|
|
log_debug("orig_rtr_lsa: " |
914 |
|
|
"point-to-multipoint, interface %s", |
915 |
|
|
iface->name); |
916 |
|
|
//XXX rtr_link.id = nbr->addr.s_addr; |
917 |
|
|
//XXX rtr_link.data = iface->addr.s_addr; |
918 |
|
|
rtr_link.type = LINK_TYPE_POINTTOPOINT; |
919 |
|
|
/* RFC 3137: stub router support */ |
920 |
|
|
if (oe_nofib || oeconf->flags & |
921 |
|
|
OSPFD_FLAG_STUB_ROUTER) |
922 |
|
|
rtr_link.metric = 0xffff; |
923 |
|
|
else |
924 |
|
|
rtr_link.metric = |
925 |
|
|
htons(iface->metric); |
926 |
|
|
if (ibuf_add(buf, &rtr_link, |
927 |
|
|
sizeof(rtr_link))) |
928 |
|
|
fatalx("orig_rtr_lsa: " |
929 |
|
|
"ibuf_add failed"); |
930 |
|
|
} |
931 |
|
|
} |
932 |
|
|
continue; |
933 |
|
|
#endif /* TODO virtualllink/pointtomulti */ |
934 |
|
|
default: |
935 |
|
|
fatalx("orig_rtr_lsa: unknown interface type"); |
936 |
|
|
} |
937 |
|
|
} |
938 |
|
|
|
939 |
|
|
/* LSA router header */ |
940 |
|
|
lsa_rtr.opts = 0; |
941 |
|
|
flags = 0; |
942 |
|
|
|
943 |
|
|
/* |
944 |
|
|
* Set the E bit as soon as an as-ext lsa may be redistributed, only |
945 |
|
|
* setting it in case we redistribute something is not worth the fuss. |
946 |
|
|
*/ |
947 |
|
|
if (oeconf->redistribute && !area->stub) |
948 |
|
|
flags |= OSPF_RTR_E; |
949 |
|
|
|
950 |
|
|
border = (area_border_router(oeconf) != 0); |
951 |
|
|
if (border != oeconf->border) { |
952 |
|
|
oeconf->border = border; |
953 |
|
|
orig_rtr_lsa_all(area); |
954 |
|
|
} |
955 |
|
|
|
956 |
|
|
if (oeconf->border) |
957 |
|
|
flags |= OSPF_RTR_B; |
958 |
|
|
/* TODO set V flag if a active virtual link ends here and the |
959 |
|
|
* area is the transit area for this link. */ |
960 |
|
|
if (virtual) |
961 |
|
|
flags |= OSPF_RTR_V; |
962 |
|
|
|
963 |
|
|
LSA_24_SETLO(lsa_rtr.opts, area_ospf_options(area)); |
964 |
|
|
LSA_24_SETHI(lsa_rtr.opts, flags); |
965 |
|
|
lsa_rtr.opts = htonl(lsa_rtr.opts); |
966 |
|
|
memcpy(ibuf_seek(buf, sizeof(lsa_hdr), sizeof(lsa_rtr)), |
967 |
|
|
&lsa_rtr, sizeof(lsa_rtr)); |
968 |
|
|
|
969 |
|
|
/* LSA header */ |
970 |
|
|
lsa_hdr.age = htons(DEFAULT_AGE); |
971 |
|
|
lsa_hdr.type = htons(LSA_TYPE_ROUTER); |
972 |
|
|
/* XXX needs to be fixed if multiple router-lsa need to be announced */ |
973 |
|
|
lsa_hdr.ls_id = 0; |
974 |
|
|
lsa_hdr.adv_rtr = oeconf->rtr_id.s_addr; |
975 |
|
|
lsa_hdr.seq_num = htonl(INIT_SEQ_NUM); |
976 |
|
|
lsa_hdr.len = htons(buf->wpos); |
977 |
|
|
lsa_hdr.ls_chksum = 0; /* updated later */ |
978 |
|
|
memcpy(ibuf_seek(buf, 0, sizeof(lsa_hdr)), &lsa_hdr, sizeof(lsa_hdr)); |
979 |
|
|
|
980 |
|
|
chksum = htons(iso_cksum(buf->buf, buf->wpos, LS_CKSUM_OFFSET)); |
981 |
|
|
memcpy(ibuf_seek(buf, LS_CKSUM_OFFSET, sizeof(chksum)), |
982 |
|
|
&chksum, sizeof(chksum)); |
983 |
|
|
|
984 |
|
|
if (self) |
985 |
|
|
imsg_compose_event(iev_rde, IMSG_LS_UPD, self->peerid, 0, |
986 |
|
|
-1, buf->buf, buf->wpos); |
987 |
|
|
else |
988 |
|
|
log_warnx("orig_rtr_lsa: empty area %s", |
989 |
|
|
inet_ntoa(area->id)); |
990 |
|
|
|
991 |
|
|
ibuf_free(buf); |
992 |
|
|
} |
993 |
|
|
|
994 |
|
|
void |
995 |
|
|
orig_net_lsa(struct iface *iface) |
996 |
|
|
{ |
997 |
|
|
struct lsa_hdr lsa_hdr; |
998 |
|
|
struct nbr *nbr; |
999 |
|
|
struct ibuf *buf; |
1000 |
|
|
struct lsa_net lsa_net; |
1001 |
|
|
int num_rtr = 0; |
1002 |
|
|
u_int16_t chksum; |
1003 |
|
|
|
1004 |
|
|
/* XXX IBUF_READ_SIZE */ |
1005 |
|
|
if ((buf = ibuf_dynamic(sizeof(lsa_hdr), IBUF_READ_SIZE)) == NULL) |
1006 |
|
|
fatal("orig_net_lsa"); |
1007 |
|
|
|
1008 |
|
|
/* reserve space for LSA header and options field */ |
1009 |
|
|
if (ibuf_reserve(buf, sizeof(lsa_hdr) + sizeof(lsa_net)) == NULL) |
1010 |
|
|
fatal("orig_net_lsa: ibuf_reserve failed"); |
1011 |
|
|
|
1012 |
|
|
lsa_net.opts = 0; |
1013 |
|
|
/* fully adjacent neighbors + self */ |
1014 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, entry) |
1015 |
|
|
if (nbr->state & NBR_STA_FULL) { |
1016 |
|
|
if (ibuf_add(buf, &nbr->id, sizeof(nbr->id))) |
1017 |
|
|
fatal("orig_net_lsa: ibuf_add failed"); |
1018 |
|
|
lsa_net.opts |= nbr->link_options; |
1019 |
|
|
num_rtr++; |
1020 |
|
|
} |
1021 |
|
|
|
1022 |
|
|
if (num_rtr == 1) { |
1023 |
|
|
/* non transit net therefore no need to generate a net lsa */ |
1024 |
|
|
ibuf_free(buf); |
1025 |
|
|
return; |
1026 |
|
|
} |
1027 |
|
|
|
1028 |
|
|
/* LSA header */ |
1029 |
|
|
if (iface->state & IF_STA_DR) |
1030 |
|
|
lsa_hdr.age = htons(DEFAULT_AGE); |
1031 |
|
|
else |
1032 |
|
|
lsa_hdr.age = htons(MAX_AGE); |
1033 |
|
|
|
1034 |
|
|
lsa_hdr.type = htons(LSA_TYPE_NETWORK); |
1035 |
|
|
/* for network LSAs, the link state ID equals the interface ID */ |
1036 |
|
|
lsa_hdr.ls_id = htonl(iface->ifindex); |
1037 |
|
|
lsa_hdr.adv_rtr = oeconf->rtr_id.s_addr; |
1038 |
|
|
lsa_hdr.seq_num = htonl(INIT_SEQ_NUM); |
1039 |
|
|
lsa_hdr.len = htons(buf->wpos); |
1040 |
|
|
lsa_hdr.ls_chksum = 0; /* updated later */ |
1041 |
|
|
memcpy(ibuf_seek(buf, 0, sizeof(lsa_hdr)), &lsa_hdr, sizeof(lsa_hdr)); |
1042 |
|
|
|
1043 |
|
|
lsa_net.opts &= lsa_net.opts & htonl(LSA_24_MASK); |
1044 |
|
|
memcpy(ibuf_seek(buf, sizeof(lsa_hdr), sizeof(lsa_net)), &lsa_net, |
1045 |
|
|
sizeof(lsa_net)); |
1046 |
|
|
|
1047 |
|
|
chksum = htons(iso_cksum(buf->buf, buf->wpos, LS_CKSUM_OFFSET)); |
1048 |
|
|
memcpy(ibuf_seek(buf, LS_CKSUM_OFFSET, sizeof(chksum)), |
1049 |
|
|
&chksum, sizeof(chksum)); |
1050 |
|
|
|
1051 |
|
|
imsg_compose_event(iev_rde, IMSG_LS_UPD, iface->self->peerid, 0, |
1052 |
|
|
-1, buf->buf, buf->wpos); |
1053 |
|
|
|
1054 |
|
|
ibuf_free(buf); |
1055 |
|
|
} |
1056 |
|
|
|
1057 |
|
|
void |
1058 |
|
|
orig_link_lsa(struct iface *iface) |
1059 |
|
|
{ |
1060 |
|
|
struct lsa_hdr lsa_hdr; |
1061 |
|
|
struct lsa_link lsa_link; |
1062 |
|
|
struct lsa_prefix lsa_prefix; |
1063 |
|
|
struct ibuf *buf; |
1064 |
|
|
struct iface_addr *ia; |
1065 |
|
|
struct in6_addr prefix; |
1066 |
|
|
unsigned int num_prefix = 0; |
1067 |
|
|
u_int16_t chksum; |
1068 |
|
|
u_int32_t options; |
1069 |
|
|
|
1070 |
|
|
log_debug("orig_link_lsa: interface %s", iface->name); |
1071 |
|
|
|
1072 |
|
|
switch (iface->type) { |
1073 |
|
|
case IF_TYPE_VIRTUALLINK: /* forbidden by rfc5340 */ |
1074 |
|
|
return; |
1075 |
|
|
case IF_TYPE_BROADCAST: |
1076 |
|
|
case IF_TYPE_NBMA: |
1077 |
|
|
if ((iface->state & IF_STA_MULTI) == 0) |
1078 |
|
|
return; |
1079 |
|
|
break; |
1080 |
|
|
case IF_TYPE_POINTOPOINT: |
1081 |
|
|
case IF_TYPE_POINTOMULTIPOINT: |
1082 |
|
|
if ((iface->state & IF_STA_POINTTOPOINT) == 0) |
1083 |
|
|
return; |
1084 |
|
|
break; |
1085 |
|
|
default: |
1086 |
|
|
fatalx("orig_link_lsa: unknown interface type"); |
1087 |
|
|
} |
1088 |
|
|
|
1089 |
|
|
/* XXX IBUF_READ_SIZE */ |
1090 |
|
|
if ((buf = ibuf_dynamic(sizeof(lsa_hdr) + sizeof(lsa_link), |
1091 |
|
|
IBUF_READ_SIZE)) == NULL) |
1092 |
|
|
fatal("orig_link_lsa"); |
1093 |
|
|
|
1094 |
|
|
/* reserve space for LSA header and LSA link header */ |
1095 |
|
|
if (ibuf_reserve(buf, sizeof(lsa_hdr) + sizeof(lsa_link)) == NULL) |
1096 |
|
|
fatal("orig_link_lsa: ibuf_reserve failed"); |
1097 |
|
|
|
1098 |
|
|
/* link-local address, and all prefixes configured on interface */ |
1099 |
|
|
TAILQ_FOREACH(ia, &iface->ifa_list, entry) { |
1100 |
|
|
if (IN6_IS_ADDR_LINKLOCAL(&ia->addr)) { |
1101 |
|
|
log_debug("orig_link_lsa: link local address %s", |
1102 |
|
|
log_in6addr(&ia->addr)); |
1103 |
|
|
lsa_link.lladdr = ia->addr; |
1104 |
|
|
continue; |
1105 |
|
|
} |
1106 |
|
|
|
1107 |
|
|
lsa_prefix.prefixlen = ia->prefixlen; |
1108 |
|
|
lsa_prefix.options = 0; |
1109 |
|
|
lsa_prefix.metric = 0; |
1110 |
|
|
inet6applymask(&prefix, &ia->addr, ia->prefixlen); |
1111 |
|
|
log_debug("orig_link_lsa: prefix %s", log_in6addr(&prefix)); |
1112 |
|
|
if (ibuf_add(buf, &lsa_prefix, sizeof(lsa_prefix))) |
1113 |
|
|
fatal("orig_link_lsa: ibuf_add failed"); |
1114 |
|
|
if (ibuf_add(buf, &prefix.s6_addr[0], |
1115 |
|
|
LSA_PREFIXSIZE(ia->prefixlen))) |
1116 |
|
|
fatal("orig_link_lsa: ibuf_add failed"); |
1117 |
|
|
num_prefix++; |
1118 |
|
|
} |
1119 |
|
|
|
1120 |
|
|
/* LSA link header (lladdr has already been filled in above) */ |
1121 |
|
|
LSA_24_SETHI(lsa_link.opts, iface->priority); |
1122 |
|
|
options = area_ospf_options(area_find(oeconf, iface->area_id)); |
1123 |
|
|
LSA_24_SETLO(lsa_link.opts, options); |
1124 |
|
|
lsa_link.opts = htonl(lsa_link.opts); |
1125 |
|
|
lsa_link.numprefix = htonl(num_prefix); |
1126 |
|
|
memcpy(ibuf_seek(buf, sizeof(lsa_hdr), sizeof(lsa_link)), |
1127 |
|
|
&lsa_link, sizeof(lsa_link)); |
1128 |
|
|
|
1129 |
|
|
/* LSA header */ |
1130 |
|
|
lsa_hdr.age = htons(DEFAULT_AGE); |
1131 |
|
|
lsa_hdr.type = htons(LSA_TYPE_LINK); |
1132 |
|
|
/* for link LSAs, the link state ID equals the interface ID */ |
1133 |
|
|
lsa_hdr.ls_id = htonl(iface->ifindex); |
1134 |
|
|
lsa_hdr.adv_rtr = oeconf->rtr_id.s_addr; |
1135 |
|
|
lsa_hdr.seq_num = htonl(INIT_SEQ_NUM); |
1136 |
|
|
lsa_hdr.len = htons(buf->wpos); |
1137 |
|
|
lsa_hdr.ls_chksum = 0; /* updated later */ |
1138 |
|
|
memcpy(ibuf_seek(buf, 0, sizeof(lsa_hdr)), &lsa_hdr, sizeof(lsa_hdr)); |
1139 |
|
|
|
1140 |
|
|
chksum = htons(iso_cksum(buf->buf, buf->wpos, LS_CKSUM_OFFSET)); |
1141 |
|
|
memcpy(ibuf_seek(buf, LS_CKSUM_OFFSET, sizeof(chksum)), |
1142 |
|
|
&chksum, sizeof(chksum)); |
1143 |
|
|
|
1144 |
|
|
imsg_compose_event(iev_rde, IMSG_LS_UPD, iface->self->peerid, 0, |
1145 |
|
|
-1, buf->buf, buf->wpos); |
1146 |
|
|
|
1147 |
|
|
ibuf_free(buf); |
1148 |
|
|
} |
1149 |
|
|
|
1150 |
|
|
u_int32_t |
1151 |
|
|
ospfe_router_id(void) |
1152 |
|
|
{ |
1153 |
|
|
return (oeconf->rtr_id.s_addr); |
1154 |
|
|
} |
1155 |
|
|
|
1156 |
|
|
void |
1157 |
|
|
ospfe_fib_update(int type) |
1158 |
|
|
{ |
1159 |
|
|
int old = oe_nofib; |
1160 |
|
|
|
1161 |
|
|
if (type == IMSG_CTL_FIB_COUPLE) |
1162 |
|
|
oe_nofib = 0; |
1163 |
|
|
if (type == IMSG_CTL_FIB_DECOUPLE) |
1164 |
|
|
oe_nofib = 1; |
1165 |
|
|
if (old != oe_nofib) |
1166 |
|
|
orig_rtr_lsa_all(NULL); |
1167 |
|
|
} |
1168 |
|
|
|
1169 |
|
|
void |
1170 |
|
|
ospfe_iface_ctl(struct ctl_conn *c, unsigned int idx) |
1171 |
|
|
{ |
1172 |
|
|
struct area *area; |
1173 |
|
|
struct iface *iface; |
1174 |
|
|
struct ctl_iface *ictl; |
1175 |
|
|
|
1176 |
|
|
LIST_FOREACH(area, &oeconf->area_list, entry) |
1177 |
|
|
LIST_FOREACH(iface, &area->iface_list, entry) |
1178 |
|
|
if (idx == 0 || idx == iface->ifindex) { |
1179 |
|
|
ictl = if_to_ctl(iface); |
1180 |
|
|
imsg_compose_event(&c->iev, |
1181 |
|
|
IMSG_CTL_SHOW_INTERFACE, 0, 0, -1, |
1182 |
|
|
ictl, sizeof(struct ctl_iface)); |
1183 |
|
|
} |
1184 |
|
|
} |
1185 |
|
|
|
1186 |
|
|
void |
1187 |
|
|
ospfe_nbr_ctl(struct ctl_conn *c) |
1188 |
|
|
{ |
1189 |
|
|
struct area *area; |
1190 |
|
|
struct iface *iface; |
1191 |
|
|
struct nbr *nbr; |
1192 |
|
|
struct ctl_nbr *nctl; |
1193 |
|
|
|
1194 |
|
|
LIST_FOREACH(area, &oeconf->area_list, entry) |
1195 |
|
|
LIST_FOREACH(iface, &area->iface_list, entry) |
1196 |
|
|
LIST_FOREACH(nbr, &iface->nbr_list, entry) { |
1197 |
|
|
if (iface->self != nbr) { |
1198 |
|
|
nctl = nbr_to_ctl(nbr); |
1199 |
|
|
imsg_compose_event(&c->iev, |
1200 |
|
|
IMSG_CTL_SHOW_NBR, 0, 0, -1, nctl, |
1201 |
|
|
sizeof(struct ctl_nbr)); |
1202 |
|
|
} |
1203 |
|
|
} |
1204 |
|
|
|
1205 |
|
|
imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); |
1206 |
|
|
} |
1207 |
|
|
|
1208 |
|
|
void |
1209 |
|
|
ospfe_demote_area(struct area *area, int active) |
1210 |
|
|
{ |
1211 |
|
|
struct demote_msg dmsg; |
1212 |
|
|
|
1213 |
|
|
if (ospfd_process != PROC_OSPF_ENGINE || |
1214 |
|
|
area->demote_group[0] == '\0') |
1215 |
|
|
return; |
1216 |
|
|
|
1217 |
|
|
bzero(&dmsg, sizeof(dmsg)); |
1218 |
|
|
strlcpy(dmsg.demote_group, area->demote_group, |
1219 |
|
|
sizeof(dmsg.demote_group)); |
1220 |
|
|
dmsg.level = area->demote_level; |
1221 |
|
|
if (active) |
1222 |
|
|
dmsg.level = -dmsg.level; |
1223 |
|
|
|
1224 |
|
|
ospfe_imsg_compose_parent(IMSG_DEMOTE, 0, &dmsg, sizeof(dmsg)); |
1225 |
|
|
} |
1226 |
|
|
|
1227 |
|
|
void |
1228 |
|
|
ospfe_demote_iface(struct iface *iface, int active) |
1229 |
|
|
{ |
1230 |
|
|
struct demote_msg dmsg; |
1231 |
|
|
|
1232 |
|
|
if (ospfd_process != PROC_OSPF_ENGINE || |
1233 |
|
|
iface->demote_group[0] == '\0') |
1234 |
|
|
return; |
1235 |
|
|
|
1236 |
|
|
bzero(&dmsg, sizeof(dmsg)); |
1237 |
|
|
strlcpy(dmsg.demote_group, iface->demote_group, |
1238 |
|
|
sizeof(dmsg.demote_group)); |
1239 |
|
|
if (active) |
1240 |
|
|
dmsg.level = -1; |
1241 |
|
|
else |
1242 |
|
|
dmsg.level = 1; |
1243 |
|
|
|
1244 |
|
|
log_warnx("ospfe_demote_iface: group %s level %d", dmsg.demote_group, |
1245 |
|
|
dmsg.level); |
1246 |
|
|
|
1247 |
|
|
ospfe_imsg_compose_parent(IMSG_DEMOTE, 0, &dmsg, sizeof(dmsg)); |
1248 |
|
|
} |