diff options
Diffstat (limited to 'usr.sbin/XNSrouted/timer.c')
| -rw-r--r-- | usr.sbin/XNSrouted/timer.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/usr.sbin/XNSrouted/timer.c b/usr.sbin/XNSrouted/timer.c deleted file mode 100644 index dd91e6d..0000000 --- a/usr.sbin/XNSrouted/timer.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Copyright (c) 1985, 1993 - * The Regents of the University of California. All rights reserved. - * - * This file includes significant work done at Cornell University by - * Bill Nesheim. That work included by permission. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char sccsid[] = "@(#)timer.c 8.1 (Berkeley) 6/5/93"; -#endif /* not lint */ - -/* - * Routing Table Management Daemon - */ -#include "defs.h" - -int timeval = -TIMER_RATE; - -/* - * Timer routine. Performs routing information supply - * duties and manages timers on routing table entries. - */ -void -timer() -{ - register struct rthash *rh; - register struct rt_entry *rt; - struct rthash *base = hosthash; - int doinghost = 1, timetobroadcast; - - timeval += TIMER_RATE; - if (lookforinterfaces && (timeval % CHECK_INTERVAL) == 0) - ifinit(); - timetobroadcast = supplier && (timeval % SUPPLY_INTERVAL) == 0; -again: - for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++) { - rt = rh->rt_forw; - for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw) { - /* - * We don't advance time on a routing entry for - * a passive gateway or that for our only interface. - * The latter is excused because we don't act as - * a routing information supplier and hence would - * time it out. This is fair as if it's down - * we're cut off from the world anyway and it's - * not likely we'll grow any new hardware in - * the mean time. - */ - if (!(rt->rt_state & RTS_PASSIVE) && - (supplier || !(rt->rt_state & RTS_INTERFACE))) - rt->rt_timer += TIMER_RATE; - if (rt->rt_timer >= EXPIRE_TIME) - rt->rt_metric = HOPCNT_INFINITY; - if (rt->rt_timer >= GARBAGE_TIME) { - rt = rt->rt_back; - /* Perhaps we should send a REQUEST for this route? */ - rtdelete(rt->rt_forw); - continue; - } - if (rt->rt_state & RTS_CHANGED) { - rt->rt_state &= ~RTS_CHANGED; - /* don't send extraneous packets */ - if (!supplier || timetobroadcast) - continue; - msg->rip_cmd = htons(RIPCMD_RESPONSE); - msg->rip_nets[0].rip_dst = - (satons_addr(rt->rt_dst)).x_net; - msg->rip_nets[0].rip_metric = - htons(min(rt->rt_metric+1, HOPCNT_INFINITY)); - toall(sndmsg); - } - } - } - if (doinghost) { - doinghost = 0; - base = nethash; - goto again; - } - if (timetobroadcast) - toall(supply); - alarm(TIMER_RATE); -} - -/* - * On hangup, let everyone know we're going away. - */ -void -hup() -{ - register struct rthash *rh; - register struct rt_entry *rt; - struct rthash *base = hosthash; - int doinghost = 1; - - if (supplier) { -again: - for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++) { - rt = rh->rt_forw; - for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw) - rt->rt_metric = HOPCNT_INFINITY; - } - if (doinghost) { - doinghost = 0; - base = nethash; - goto again; - } - toall(supply); - } - exit(1); -} |
