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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/irda/timer.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'net/irda/timer.c')
-rw-r--r--net/irda/timer.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/net/irda/timer.c b/net/irda/timer.c
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+++ b/net/irda/timer.c
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+/*********************************************************************
+ *
+ * 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 */
+}