Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 224 insertions, 0 deletions

diff --git a/net/ax25/ax25_timer.c b/net/ax25/ax25_timer.c
new file mode 100644
index 000000000..9f7cb0a7c
--- /dev/null
+++ b/net/ax25/ax25_timer.c
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * 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/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/module.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 <linux/uaccess.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+
+static void ax25_heartbeat_expiry(struct timer_list *);
+static void ax25_t1timer_expiry(struct timer_list *);
+static void ax25_t2timer_expiry(struct timer_list *);
+static void ax25_t3timer_expiry(struct timer_list *);
+static void ax25_idletimer_expiry(struct timer_list *);
+
+void ax25_setup_timers(ax25_cb *ax25)
+{
+	timer_setup(&ax25->timer, ax25_heartbeat_expiry, 0);
+	timer_setup(&ax25->t1timer, ax25_t1timer_expiry, 0);
+	timer_setup(&ax25->t2timer, ax25_t2timer_expiry, 0);
+	timer_setup(&ax25->t3timer, ax25_t3timer_expiry, 0);
+	timer_setup(&ax25->idletimer, ax25_idletimer_expiry, 0);
+}
+
+void ax25_start_heartbeat(ax25_cb *ax25)
+{
+	mod_timer(&ax25->timer, jiffies + 5 * HZ);
+}
+
+void ax25_start_t1timer(ax25_cb *ax25)
+{
+	mod_timer(&ax25->t1timer, jiffies + ax25->t1);
+}
+
+void ax25_start_t2timer(ax25_cb *ax25)
+{
+	mod_timer(&ax25->t2timer, jiffies + ax25->t2);
+}
+
+void ax25_start_t3timer(ax25_cb *ax25)
+{
+	if (ax25->t3 > 0)
+		mod_timer(&ax25->t3timer, jiffies + ax25->t3);
+	else
+		del_timer(&ax25->t3timer);
+}
+
+void ax25_start_idletimer(ax25_cb *ax25)
+{
+	if (ax25->idle > 0)
+		mod_timer(&ax25->idletimer, jiffies + ax25->idle);
+	else
+		del_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)
+{
+	long delta = timer->expires - jiffies;
+
+	if (!timer_pending(timer))
+		return 0;
+
+	return max(0L, delta);
+}
+
+EXPORT_SYMBOL(ax25_display_timer);
+
+static void ax25_heartbeat_expiry(struct timer_list *t)
+{
+	int proto = AX25_PROTO_STD_SIMPLEX;
+	ax25_cb *ax25 = from_timer(ax25, t, timer);
+
+	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(struct timer_list *t)
+{
+	ax25_cb *ax25 = from_timer(ax25, t, t1timer);
+
+	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(struct timer_list *t)
+{
+	ax25_cb *ax25 = from_timer(ax25, t, t2timer);
+
+	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(struct timer_list *t)
+{
+	ax25_cb *ax25 = from_timer(ax25, t, t3timer);
+
+	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(struct timer_list *t)
+{
+	ax25_cb *ax25 = from_timer(ax25, t, idletimer);
+
+	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
+	}
+}