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222 lines
4.9 KiB
222 lines
4.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Copyright (C) Alan Cox GW4PTS ([email protected]) |
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* Copyright (C) Jonathan Naylor G4KLX ([email protected]) |
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* Copyright (C) Tomi Manninen OH2BNS ([email protected]) |
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* Copyright (C) Darryl Miles G7LED ([email protected]) |
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* Copyright (C) Joerg Reuter DL1BKE ([email protected]) |
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* Copyright (C) Frederic Rible F1OAT ([email protected]) |
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* Copyright (C) 2002 Ralf Baechle DO1GRB ([email protected]) |
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*/ |
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#include <linux/errno.h> |
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#include <linux/types.h> |
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#include <linux/socket.h> |
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#include <linux/in.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/jiffies.h> |
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#include <linux/timer.h> |
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#include <linux/string.h> |
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#include <linux/sockios.h> |
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#include <linux/net.h> |
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#include <net/ax25.h> |
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#include <linux/inet.h> |
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#include <linux/netdevice.h> |
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#include <linux/skbuff.h> |
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#include <net/sock.h> |
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#include <linux/uaccess.h> |
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#include <linux/fcntl.h> |
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#include <linux/mm.h> |
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#include <linux/interrupt.h> |
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static void ax25_heartbeat_expiry(struct timer_list *); |
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static void ax25_t1timer_expiry(struct timer_list *); |
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static void ax25_t2timer_expiry(struct timer_list *); |
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static void ax25_t3timer_expiry(struct timer_list *); |
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static void ax25_idletimer_expiry(struct timer_list *); |
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void ax25_setup_timers(ax25_cb *ax25) |
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{ |
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timer_setup(&ax25->timer, ax25_heartbeat_expiry, 0); |
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timer_setup(&ax25->t1timer, ax25_t1timer_expiry, 0); |
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timer_setup(&ax25->t2timer, ax25_t2timer_expiry, 0); |
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timer_setup(&ax25->t3timer, ax25_t3timer_expiry, 0); |
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timer_setup(&ax25->idletimer, ax25_idletimer_expiry, 0); |
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} |
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void ax25_start_heartbeat(ax25_cb *ax25) |
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{ |
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mod_timer(&ax25->timer, jiffies + 5 * HZ); |
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} |
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void ax25_start_t1timer(ax25_cb *ax25) |
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{ |
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mod_timer(&ax25->t1timer, jiffies + ax25->t1); |
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} |
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void ax25_start_t2timer(ax25_cb *ax25) |
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{ |
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mod_timer(&ax25->t2timer, jiffies + ax25->t2); |
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} |
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void ax25_start_t3timer(ax25_cb *ax25) |
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{ |
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if (ax25->t3 > 0) |
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mod_timer(&ax25->t3timer, jiffies + ax25->t3); |
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else |
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del_timer(&ax25->t3timer); |
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} |
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void ax25_start_idletimer(ax25_cb *ax25) |
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{ |
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if (ax25->idle > 0) |
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mod_timer(&ax25->idletimer, jiffies + ax25->idle); |
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else |
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del_timer(&ax25->idletimer); |
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} |
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void ax25_stop_heartbeat(ax25_cb *ax25) |
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{ |
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del_timer(&ax25->timer); |
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} |
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void ax25_stop_t1timer(ax25_cb *ax25) |
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{ |
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del_timer(&ax25->t1timer); |
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} |
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void ax25_stop_t2timer(ax25_cb *ax25) |
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{ |
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del_timer(&ax25->t2timer); |
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} |
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void ax25_stop_t3timer(ax25_cb *ax25) |
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{ |
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del_timer(&ax25->t3timer); |
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} |
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void ax25_stop_idletimer(ax25_cb *ax25) |
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{ |
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del_timer(&ax25->idletimer); |
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} |
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int ax25_t1timer_running(ax25_cb *ax25) |
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{ |
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return timer_pending(&ax25->t1timer); |
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} |
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unsigned long ax25_display_timer(struct timer_list *timer) |
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{ |
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if (!timer_pending(timer)) |
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return 0; |
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return timer->expires - jiffies; |
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} |
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EXPORT_SYMBOL(ax25_display_timer); |
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static void ax25_heartbeat_expiry(struct timer_list *t) |
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{ |
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int proto = AX25_PROTO_STD_SIMPLEX; |
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ax25_cb *ax25 = from_timer(ax25, t, timer); |
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if (ax25->ax25_dev) |
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proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]; |
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switch (proto) { |
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case AX25_PROTO_STD_SIMPLEX: |
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case AX25_PROTO_STD_DUPLEX: |
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ax25_std_heartbeat_expiry(ax25); |
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break; |
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#ifdef CONFIG_AX25_DAMA_SLAVE |
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case AX25_PROTO_DAMA_SLAVE: |
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if (ax25->ax25_dev->dama.slave) |
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ax25_ds_heartbeat_expiry(ax25); |
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else |
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ax25_std_heartbeat_expiry(ax25); |
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break; |
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#endif |
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} |
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} |
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static void ax25_t1timer_expiry(struct timer_list *t) |
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{ |
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ax25_cb *ax25 = from_timer(ax25, t, t1timer); |
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { |
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case AX25_PROTO_STD_SIMPLEX: |
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case AX25_PROTO_STD_DUPLEX: |
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ax25_std_t1timer_expiry(ax25); |
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break; |
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#ifdef CONFIG_AX25_DAMA_SLAVE |
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case AX25_PROTO_DAMA_SLAVE: |
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if (!ax25->ax25_dev->dama.slave) |
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ax25_std_t1timer_expiry(ax25); |
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break; |
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#endif |
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} |
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} |
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static void ax25_t2timer_expiry(struct timer_list *t) |
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{ |
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ax25_cb *ax25 = from_timer(ax25, t, t2timer); |
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { |
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case AX25_PROTO_STD_SIMPLEX: |
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case AX25_PROTO_STD_DUPLEX: |
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ax25_std_t2timer_expiry(ax25); |
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break; |
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#ifdef CONFIG_AX25_DAMA_SLAVE |
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case AX25_PROTO_DAMA_SLAVE: |
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if (!ax25->ax25_dev->dama.slave) |
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ax25_std_t2timer_expiry(ax25); |
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break; |
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#endif |
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} |
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} |
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static void ax25_t3timer_expiry(struct timer_list *t) |
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{ |
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ax25_cb *ax25 = from_timer(ax25, t, t3timer); |
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { |
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case AX25_PROTO_STD_SIMPLEX: |
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case AX25_PROTO_STD_DUPLEX: |
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ax25_std_t3timer_expiry(ax25); |
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break; |
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#ifdef CONFIG_AX25_DAMA_SLAVE |
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case AX25_PROTO_DAMA_SLAVE: |
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if (ax25->ax25_dev->dama.slave) |
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ax25_ds_t3timer_expiry(ax25); |
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else |
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ax25_std_t3timer_expiry(ax25); |
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break; |
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#endif |
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} |
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} |
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static void ax25_idletimer_expiry(struct timer_list *t) |
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{ |
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ax25_cb *ax25 = from_timer(ax25, t, idletimer); |
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { |
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case AX25_PROTO_STD_SIMPLEX: |
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case AX25_PROTO_STD_DUPLEX: |
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ax25_std_idletimer_expiry(ax25); |
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break; |
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#ifdef CONFIG_AX25_DAMA_SLAVE |
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case AX25_PROTO_DAMA_SLAVE: |
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if (ax25->ax25_dev->dama.slave) |
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ax25_ds_idletimer_expiry(ax25); |
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else |
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ax25_std_idletimer_expiry(ax25); |
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break; |
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#endif |
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} |
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}
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