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Diffstat (limited to 'usr.sbin/IPXrouted/timer.c')
| -rw-r--r-- | usr.sbin/IPXrouted/timer.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/usr.sbin/IPXrouted/timer.c b/usr.sbin/IPXrouted/timer.c deleted file mode 100644 index 2159730..0000000 --- a/usr.sbin/IPXrouted/timer.c +++ /dev/null @@ -1,239 +0,0 @@ -/* - * Copyright (c) 1985, 1993 - * The Regents of the University of California. All rights reserved. - * - * Copyright (c) 1995 John Hay. 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. - * - * $FreeBSD$ - */ - -#ifndef lint -static const char sccsid[] = "@(#)timer.c 8.1 (Berkeley) 6/5/93"; -#endif /* not lint */ - -/* - * Routing Table Management Daemon - */ -#include "defs.h" -#include <unistd.h> -#include <stdlib.h> - -int timeval = -TIMER_RATE; - -/* - * Timer routine. Performs routing information supply - * duties and manages timers on routing and SAP table entries. - */ -void -timer() -{ - register struct rthash *rh; - register struct rt_entry *rt; - register struct sap_hash *sh; - register struct sap_entry *sap; - struct sap_hash *sap_base = sap_head; - int timetobroadcast, ripbroadcast, sapbroadcast; - - timeval += TIMER_RATE; - if (lookforinterfaces && (timeval % CHECK_INTERVAL) == 0) - ifinit(); - timetobroadcast = supplier && (timeval % SUPPLY_INTERVAL) == 0; - ripbroadcast = supplier && timetobroadcast && - (timeval % RIP_INTERVAL) == 0; - sapbroadcast = timetobroadcast && dosap && !ripbroadcast; - - for (rh = nethash; rh < &nethash[ROUTEHASHSIZ]; rh++) { - rt = rh->rt_forw; - for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw) { - if (rt->rt_clone) { - struct rt_entry *trt, *prt; - /* - * If a clone expire free it and mark the - * main route RTS_CHANGED. - */ - prt = rt; - trt = rt->rt_clone; - while (trt) { - trt->rt_timer += TIMER_RATE; - if (trt->rt_timer >= EXPIRE_TIME) { - prt->rt_clone = trt->rt_clone; - free((char *)trt); - trt = prt->rt_clone; - rt->rt_state |= RTS_CHANGED; - } else { - prt = trt; - trt = prt->rt_clone; - } - } - } - /* - * 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) && - !(rt->rt_state & RTS_INTERFACE)) - rt->rt_timer += TIMER_RATE; - if (rt->rt_timer >= EXPIRE_TIME) { - rt->rt_metric = HOPCNT_INFINITY; - rt->rt_state |= RTS_CHANGED; - } - 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 || ripbroadcast) - continue; - if ((rt->rt_metric + 1) == HOPCNT_INFINITY) - continue; - msg->rip_cmd = htons(RIPCMD_RESPONSE); - msg->rip_nets[0].rip_dst = - (satoipx_addr(rt->rt_dst)).x_net; - msg->rip_nets[0].rip_metric = - htons(min(rt->rt_metric+1, HOPCNT_INFINITY)); - msg->rip_nets[0].rip_ticks = - htons(rt->rt_ticks + 1); - toall(sndmsg, rt, 0); - } - } - } - if (ripbroadcast) - toall(supply, NULL, 0); - - /* - * Now do the SAP stuff. - */ - for (sh = sap_base; sh < &sap_base[SAPHASHSIZ]; sh++) { - sap = sh->forw; - for (; sap != (struct sap_entry *)sh; sap = sap->forw) { - if (sap->clone) { - struct sap_entry *tsap, *psap; - /* - * If a clone expire free it and mark the - * main sap entry RTS_CHANGED. - */ - psap = sap; - tsap = sap->clone; - while (tsap) { - tsap->timer += TIMER_RATE; - if (tsap->timer >= EXPIRE_TIME) { - psap->clone = tsap->clone; - free((char *)tsap); - tsap = psap->clone; - sap->state |= RTS_CHANGED; - } else { - psap = tsap; - tsap = psap->clone; - } - } - } - sap->timer += TIMER_RATE; - if (sap->timer >= EXPIRE_TIME) { - sap->sap.hops = htons(HOPCNT_INFINITY); - sap->state |= RTS_CHANGED; - } - if (sap->timer >= GARBAGE_TIME) { - sap = sap->back; - /* Perhaps we should send a REQUEST for this route? */ - sap_delete(sap->forw); - continue; - } - /* - * XXX sap_sndmsg on RTS_CHANGED - */ - if (sap->state & RTS_CHANGED) { - sap->state &= ~RTS_CHANGED; -#ifdef notyet - /* don't send extraneous packets */ - if (!supplier || sapbroadcast) - continue; - if ((ntohs(sap->sap.hops) + 1) == HOPCNT_INFINITY) - continue; - sap_msg->sap_cmd = htons(SAP_RESP); - sap_msg->sap[0] = sap->sap; - sap_msg->sap[0].hops = - htons(min(sap->sap.hops+1, HOPCNT_INFINITY)); - toall(sapsndmsg, rt, 0); -#endif - } - } - } - if (sapbroadcast) - sap_supply_toall(0); - if (ftrace && sapbroadcast) - dumpsaptable(ftrace, sap_head); -} - -/* - * On hangup, let everyone know we're going away. - */ -void -hup() -{ - register struct rthash *rh; - register struct rt_entry *rt; - register struct sap_hash *sh; - register struct sap_entry *sap; - - if (supplier) { - for (rh = nethash; rh < &nethash[ROUTEHASHSIZ]; rh++) { - rt = rh->rt_forw; - for (; rt != (struct rt_entry *)rh; rt = rt->rt_forw) - rt->rt_metric = HOPCNT_INFINITY; - } - toall(supply, NULL, 0); - - /* - * Now for SAP. - */ - for (sh = sap_head; sh < &sap_head[SAPHASHSIZ]; sh++) { - sap = sh->forw; - for (; sap != (struct sap_entry *)sh; sap = sap->forw) - sap->sap.hops = htons(HOPCNT_INFINITY); - } - if (dosap) - sap_supply_toall(0); - } - exit(1); -} |
