1 files changed, 243 insertions, 0 deletions

diff --git a/net/ax25/ax25_timer.c b/net/ax25/ax25_timer.c
new file mode 100644
index 000000000000..7a6b50a14554
--- /dev/null
+++ b/net/ax25/ax25_timer.c
@@ -0,0 +1,243 @@
+/*
+ * 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.
+ *
+ * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
+ * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
+ * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
+ * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk)
+ * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
+ * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
+ * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <net/ax25.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+
+static void ax25_heartbeat_expiry(unsigned long);
+static void ax25_t1timer_expiry(unsigned long);
+static void ax25_t2timer_expiry(unsigned long);
+static void ax25_t3timer_expiry(unsigned long);
+static void ax25_idletimer_expiry(unsigned long);
+
+void ax25_start_heartbeat(ax25_cb *ax25)
+{
+        del_timer(&ax25->timer);
+
+        ax25->timer.data     = (unsigned long)ax25;
+        ax25->timer.function = &ax25_heartbeat_expiry;
+        ax25->timer.expires  = jiffies + 5 * HZ;
+
+        add_timer(&ax25->timer);
+}
+
+void ax25_start_t1timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t1timer);
+
+        ax25->t1timer.data     = (unsigned long)ax25;
+        ax25->t1timer.function = &ax25_t1timer_expiry;
+        ax25->t1timer.expires  = jiffies + ax25->t1;
+
+        add_timer(&ax25->t1timer);
+}
+
+void ax25_start_t2timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t2timer);
+
+        ax25->t2timer.data     = (unsigned long)ax25;
+        ax25->t2timer.function = &ax25_t2timer_expiry;
+        ax25->t2timer.expires  = jiffies + ax25->t2;
+
+        add_timer(&ax25->t2timer);
+}
+
+void ax25_start_t3timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t3timer);
+
+        if (ax25->t3 > 0) {
+                ax25->t3timer.data     = (unsigned long)ax25;
+                ax25->t3timer.function = &ax25_t3timer_expiry;
+                ax25->t3timer.expires  = jiffies + ax25->t3;
+
+                add_timer(&ax25->t3timer);
+        }
+}
+
+void ax25_start_idletimer(ax25_cb *ax25)
+{
+        del_timer(&ax25->idletimer);
+
+        if (ax25->idle > 0) {
+                ax25->idletimer.data     = (unsigned long)ax25;
+                ax25->idletimer.function = &ax25_idletimer_expiry;
+                ax25->idletimer.expires  = jiffies + ax25->idle;
+
+                add_timer(&ax25->idletimer);
+        }
+}
+
+void ax25_stop_heartbeat(ax25_cb *ax25)
+{
+        del_timer(&ax25->timer);
+}
+
+void ax25_stop_t1timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t1timer);
+}
+
+void ax25_stop_t2timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t2timer);
+}
+
+void ax25_stop_t3timer(ax25_cb *ax25)
+{
+        del_timer(&ax25->t3timer);
+}
+
+void ax25_stop_idletimer(ax25_cb *ax25)
+{
+        del_timer(&ax25->idletimer);
+}
+
+int ax25_t1timer_running(ax25_cb *ax25)
+{
+        return timer_pending(&ax25->t1timer);
+}
+
+unsigned long ax25_display_timer(struct timer_list *timer)
+{
+        if (!timer_pending(timer))
+                return 0;
+
+        return timer->expires - jiffies;
+}
+
+static void ax25_heartbeat_expiry(unsigned long param)
+{
+        int proto = AX25_PROTO_STD_SIMPLEX;
+        ax25_cb *ax25 = (ax25_cb *)param;
+
+        if (ax25->ax25_dev)
+                proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
+
+        switch (proto) {
+        case AX25_PROTO_STD_SIMPLEX:
+        case AX25_PROTO_STD_DUPLEX:
+                ax25_std_heartbeat_expiry(ax25);
+                break;
+
+#ifdef CONFIG_AX25_DAMA_SLAVE
+        case AX25_PROTO_DAMA_SLAVE:
+                if (ax25->ax25_dev->dama.slave)
+                        ax25_ds_heartbeat_expiry(ax25);
+                else
+                        ax25_std_heartbeat_expiry(ax25);
+                break;
+#endif
+        }
+}
+
+static void ax25_t1timer_expiry(unsigned long param)
+{
+        ax25_cb *ax25 = (ax25_cb *)param;
+
+        switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+        case AX25_PROTO_STD_SIMPLEX:
+        case AX25_PROTO_STD_DUPLEX:
+                ax25_std_t1timer_expiry(ax25);
+                break;
+
+#ifdef CONFIG_AX25_DAMA_SLAVE
+        case AX25_PROTO_DAMA_SLAVE:
+                if (!ax25->ax25_dev->dama.slave)
+                        ax25_std_t1timer_expiry(ax25);
+                break;
+#endif
+        }
+}
+
+static void ax25_t2timer_expiry(unsigned long param)
+{
+        ax25_cb *ax25 = (ax25_cb *)param;
+
+        switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+        case AX25_PROTO_STD_SIMPLEX:
+        case AX25_PROTO_STD_DUPLEX:
+                ax25_std_t2timer_expiry(ax25);
+                break;
+
+#ifdef CONFIG_AX25_DAMA_SLAVE
+        case AX25_PROTO_DAMA_SLAVE:
+                if (!ax25->ax25_dev->dama.slave)
+                        ax25_std_t2timer_expiry(ax25);
+                break;
+#endif
+        }
+}
+
+static void ax25_t3timer_expiry(unsigned long param)
+{
+        ax25_cb *ax25 = (ax25_cb *)param;
+
+        switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+        case AX25_PROTO_STD_SIMPLEX:
+        case AX25_PROTO_STD_DUPLEX:
+                ax25_std_t3timer_expiry(ax25);
+                break;
+
+#ifdef CONFIG_AX25_DAMA_SLAVE
+        case AX25_PROTO_DAMA_SLAVE:
+                if (ax25->ax25_dev->dama.slave)
+                        ax25_ds_t3timer_expiry(ax25);
+                else
+                        ax25_std_t3timer_expiry(ax25);
+                break;
+#endif
+        }
+}
+
+static void ax25_idletimer_expiry(unsigned long param)
+{
+        ax25_cb *ax25 = (ax25_cb *)param;
+
+        switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+        case AX25_PROTO_STD_SIMPLEX:
+        case AX25_PROTO_STD_DUPLEX:
+                ax25_std_idletimer_expiry(ax25);
+                break;
+
+#ifdef CONFIG_AX25_DAMA_SLAVE
+        case AX25_PROTO_DAMA_SLAVE:
+                if (ax25->ax25_dev->dama.slave)
+                        ax25_ds_idletimer_expiry(ax25);
+                else
+                        ax25_std_idletimer_expiry(ax25);
+                break;
+#endif
+        }
+}