/********************************************************************* * * Filename:      timer.c * Version: * Description: * Status:        Experimental. * Author:        Dag Brattli <dagb@cs.uit.no> * Created at:    Sat Aug 16 00:59:29 1997 * Modified at:   Wed Dec  8 12:50:34 1999 * Modified by:   Dag Brattli <dagb@cs.uit.no> * *     Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>, *     All Rights Reserved. *     Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> * *     This program is free software; you can redistribute it and/or *     modify it under the terms of the GNU General Public License as *     published by the Free Software Foundation; either version 2 of *     the License, or (at your option) any later version. * *     Neither Dag Brattli nor University of Tromsø admit liability nor *     provide warranty for any of this software. This material is *     provided "AS-IS" and at no charge. * ********************************************************************/ #include <asm/system.h>#include <linux/delay.h> #include <net/irda/timer.h>#include <net/irda/irda.h>#include <net/irda/irda_device.h>#include <net/irda/irlap.h>#include <net/irda/irlmp.h> extern int  sysctl_slot_timeout; static void irlap_slot_timer_expired(void* data);static void irlap_query_timer_expired(void* data);static void irlap_final_timer_expired(void* data);static void irlap_wd_timer_expired(void* data);static void irlap_backoff_timer_expired(void* data);static void irlap_media_busy_expired(void* data); void irlap_start_slot_timer(struct irlap_cb *self, int timeout){	irda_start_timer(&self->slot_timer, timeout, (void *) self,			 irlap_slot_timer_expired);} void irlap_start_query_timer(struct irlap_cb *self, int S, int s){	int timeout; 	/* Calculate when the peer discovery should end. Normally, we	 * get the end-of-discovery frame, so this is just in case	 * we miss it.	 * Basically, we multiply the number of remaining slots by our	 * slot time, plus add some extra time to properly receive the last	 * discovery packet (which is longer due to extra discovery info),	 * to avoid messing with for incomming connections requests and	 * to accommodate devices that perform discovery slower than us.	 * Jean II */	timeout = ((sysctl_slot_timeout * HZ / 1000) * (S - s)		   + XIDEXTRA_TIMEOUT + SMALLBUSY_TIMEOUT); 	/* Set or re-set the timer. We reset the timer for each received	 * discovery query, which allow us to automatically adjust to	 * the speed of the peer discovery (faster or slower). Jean II */	irda_start_timer( &self->query_timer, timeout, (void *) self,			  irlap_query_timer_expired);} void irlap_start_final_timer(struct irlap_cb *self, int timeout){	irda_start_timer(&self->final_timer, timeout, (void *) self,			 irlap_final_timer_expired);} void irlap_start_wd_timer(struct irlap_cb *self, int timeout){	irda_start_timer(&self->wd_timer, timeout, (void *) self,			 irlap_wd_timer_expired);} void irlap_start_backoff_timer(struct irlap_cb *self, int timeout){	irda_start_timer(&self->backoff_timer, timeout, (void *) self,			 irlap_backoff_timer_expired);} void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout){	irda_start_timer(&self->media_busy_timer, timeout,			 (void *) self, irlap_media_busy_expired);} void irlap_stop_mbusy_timer(struct irlap_cb *self){	/* If timer is activated, kill it! */	del_timer(&self->media_busy_timer); 	/* If we are in NDM, there is a bunch of events in LAP that	 * that be pending due to the media_busy condition, such as	 * CONNECT_REQUEST and SEND_UI_FRAME. If we don't generate	 * an event, they will wait forever...	 * Jean II */	if (self->state == LAP_NDM)		irlap_do_event(self, MEDIA_BUSY_TIMER_EXPIRED, NULL, NULL);} void irlmp_start_watchdog_timer(struct lsap_cb *self, int timeout){	irda_start_timer(&self->watchdog_timer, timeout, (void *) self,			 irlmp_watchdog_timer_expired);} void irlmp_start_discovery_timer(struct irlmp_cb *self, int timeout){	irda_start_timer(&self->discovery_timer, timeout, (void *) self,			 irlmp_discovery_timer_expired);} void irlmp_start_idle_timer(struct lap_cb *self, int timeout){	irda_start_timer(&self->idle_timer, timeout, (void *) self,			 irlmp_idle_timer_expired);} void irlmp_stop_idle_timer(struct lap_cb *self){	/* If timer is activated, kill it! */	del_timer(&self->idle_timer);} /* * Function irlap_slot_timer_expired (data) * *    IrLAP slot timer has expired * */static void irlap_slot_timer_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;);	IRDA_ASSERT(self->magic == LAP_MAGIC, return;); 	irlap_do_event(self, SLOT_TIMER_EXPIRED, NULL, NULL);} /* * Function irlap_query_timer_expired (data) * *    IrLAP query timer has expired * */static void irlap_query_timer_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;);	IRDA_ASSERT(self->magic == LAP_MAGIC, return;); 	irlap_do_event(self, QUERY_TIMER_EXPIRED, NULL, NULL);} /* * Function irda_final_timer_expired (data) * * * */static void irlap_final_timer_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;);	IRDA_ASSERT(self->magic == LAP_MAGIC, return;); 	irlap_do_event(self, FINAL_TIMER_EXPIRED, NULL, NULL);} /* * Function irda_wd_timer_expired (data) * * * */static void irlap_wd_timer_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;);	IRDA_ASSERT(self->magic == LAP_MAGIC, return;); 	irlap_do_event(self, WD_TIMER_EXPIRED, NULL, NULL);} /* * Function irda_backoff_timer_expired (data) * * * */static void irlap_backoff_timer_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;);	IRDA_ASSERT(self->magic == LAP_MAGIC, return;); 	irlap_do_event(self, BACKOFF_TIMER_EXPIRED, NULL, NULL);}  /* * Function irtty_media_busy_expired (data) * * */static void irlap_media_busy_expired(void *data){	struct irlap_cb *self = (struct irlap_cb *) data; 	IRDA_ASSERT(self != NULL, return;); 	irda_device_set_media_busy(self->netdev, FALSE);	/* Note : the LAP event will be send in irlap_stop_mbusy_timer(),	* to catch other cases where the flag is cleared (for example	* after a discovery) - Jean II */}