+++ /dev/null
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (C) Dirk Husemann, Computer Science Department IV,
- * University of Erlangen-Nuremberg, Germany, 1990, 1991, 1992
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Dirk Husemann and the Computer Science Department (IV) of
- * the University of Erlangen-Nuremberg, Germany.
- *
- * 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.
- *
- * @(#)llc_timer.c 8.1 (Berkeley) 6/10/93
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/mbuf.h>
-#include <sys/domain.h>
-#include <sys/socket.h>
-#include <sys/protosw.h>
-#include <sys/errno.h>
-#include <sys/time.h>
-#include <sys/kernel.h>
-
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/if_llc.h>
-
-#include <netccitt/dll.h>
-#include <netccitt/llc_var.h>
-
-
-/*
- * Various timer values. They can be adjusted
- * by patching the binary with adb if necessary.
- */
-/* ISO 8802-2 timers */
-int llc_n2 = LLC_N2_VALUE;
-int llc_ACK_timer = LLC_ACK_TIMER;
-int llc_P_timer = LLC_P_TIMER;
-int llc_BUSY_timer = LLC_BUSY_TIMER;
-int llc_REJ_timer = LLC_REJ_TIMER;
-/* Implementation specific timers */
-int llc_AGE_timer = LLC_AGE_TIMER;
-int llc_DACTION_timer = LLC_DACTION_TIMER;
-
-/*
- * The timer routine. We are called every 500ms by the kernel.
- * Handle the various virtual timers.
- */
-
-void
-llc_timer()
-{
- register struct llc_linkcb *linkp;
- register struct llc_linkcb *nlinkp;
- register int timer;
- register int action;
- register int s = splimp();
-
- /*
- * All links are accessible over the doubly linked list llccb_q
- */
- if (!LQEMPTY) {
- /*
- * A for-loop is not that great an idea as the linkp
- * might get deleted if the age timer has expired ...
- */
- linkp = LQFIRST;
- while (LQVALID(linkp)) {
- nlinkp = LQNEXT(linkp);
- /*
- * Check implementation specific timers first
- */
- /* The delayed action/acknowledge idle timer */
- switch (LLC_TIMERXPIRED(linkp, DACTION)) {
- case LLC_TIMER_RUNNING:
- LLC_AGETIMER(linkp, DACTION);
- break;
- case LLC_TIMER_EXPIRED: {
- register int cmdrsp;
- register int pollfinal;
-
- switch (LLC_GETFLAG(linkp, DACTION)) {
- case LLC_DACKCMD:
- cmdrsp = LLC_CMD, pollfinal = 0;
- break;
- case LLC_DACKCMDPOLL:
- cmdrsp = LLC_CMD, pollfinal = 1;
- break;
- case LLC_DACKRSP:
- cmdrsp = LLC_RSP, pollfinal = 0;
- break;
- case LLC_DACKRSPFINAL:
- cmdrsp = LLC_RSP, pollfinal = 1;
- break;
- }
- llc_send(linkp, LLCFT_RR, cmdrsp, pollfinal);
- LLC_STOPTIMER(linkp, DACTION);
- break;
- }
- }
- /* The link idle timer */
- switch (LLC_TIMERXPIRED(linkp, AGE)) {
- case LLC_TIMER_RUNNING:
- LLC_AGETIMER(linkp, AGE);
- break;
- case LLC_TIMER_EXPIRED:
- /*
- * Only crunch the link when really no
- * timers are running any more.
- */
- if (llc_anytimersup(linkp) == 0) {
- llc_dellink(linkp);
- LLC_STOPTIMER(linkp, AGE);
- goto gone;
- } else {
- LLC_STARTTIMER(linkp, AGE);
- }
- break;
- }
- /*
- * Now, check all the ISO 8802-2 timers
- */
- FOR_ALL_LLC_TIMERS(timer) {
- action = 0;
- if ((linkp->llcl_timerflags & (1<<timer)) &&
- (linkp->llcl_timers[timer] == 0)) {
- switch (timer) {
- case LLC_ACK_SHIFT:
- action = LLC_ACK_TIMER_EXPIRED;
- break;
- case LLC_P_SHIFT:
- action = LLC_P_TIMER_EXPIRED;
- break;
- case LLC_BUSY_SHIFT:
- action = LLC_BUSY_TIMER_EXPIRED;
- break;
- case LLC_REJ_SHIFT:
- action = LLC_REJ_TIMER_EXPIRED;
- break;
- }
- linkp->llcl_timerflags &= ~(1<<timer);
- (void)llc_statehandler(linkp, (struct llc *)0, action, 0, 1);
- } else if (linkp->llcl_timers[timer] > 0)
- linkp->llcl_timers[timer]--;
- }
-
-gone: linkp = nlinkp;
- }
- }
- splx (s);
-}
projects / apple / xnu.git / blobdiff