1 files changed, 233 insertions, 0 deletions

diff --git a/net/irda/timer.c b/net/irda/timer.c
new file mode 100644
index 000000000000..0e17f976add6
--- /dev/null
+++ b/net/irda/timer.c
@@ -0,0 +1,233 @@
+/*********************************************************************
+ *                
+ * 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 Tromsų 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/config.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 accomodate 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)
+ *
+ *    
+ */
+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 */
+}