/*
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/*
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* AX.25 release 037
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* AX.25 release 037
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*
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*
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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*
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*
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* This module:
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* This module:
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* This module is free software; you can redistribute it and/or
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* This module is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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* 2 of the License, or (at your option) any later version.
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*
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*
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* History
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* History
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* AX.25 028a Jonathan(G4KLX) New state machine based on SDL diagrams.
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* AX.25 028a Jonathan(G4KLX) New state machine based on SDL diagrams.
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* AX.25 028b Jonathan(G4KLX) Extracted AX25 control block from the
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* AX.25 028b Jonathan(G4KLX) Extracted AX25 control block from the
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* sock structure.
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* sock structure.
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* AX.25 029 Alan(GW4PTS) Switched to KA9Q constant names.
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* AX.25 029 Alan(GW4PTS) Switched to KA9Q constant names.
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* AX.25 031 Joerg(DL1BKE) Added DAMA support
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* AX.25 031 Joerg(DL1BKE) Added DAMA support
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* AX.25 032 Joerg(DL1BKE) Fixed DAMA timeout bug
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* AX.25 032 Joerg(DL1BKE) Fixed DAMA timeout bug
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* AX.25 033 Jonathan(G4KLX) Modularisation functions.
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* AX.25 033 Jonathan(G4KLX) Modularisation functions.
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* AX.25 035 Frederic(F1OAT) Support for pseudo-digipeating.
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* AX.25 035 Frederic(F1OAT) Support for pseudo-digipeating.
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* AX.25 036 Jonathan(G4KLX) Split Standard and DAMA code into separate files.
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* AX.25 036 Jonathan(G4KLX) Split Standard and DAMA code into separate files.
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* Joerg(DL1BKE) Fixed DAMA Slave. We are *required* to start with
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* Joerg(DL1BKE) Fixed DAMA Slave. We are *required* to start with
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* standard AX.25 mode.
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* standard AX.25 mode.
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* AX.25 037 Jonathan(G4KLX) New timer architecture.
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* AX.25 037 Jonathan(G4KLX) New timer architecture.
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* Tomi(OH2BNS) Fixed heartbeat expiry (check ax25_dev).
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* Tomi(OH2BNS) Fixed heartbeat expiry (check ax25_dev).
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*/
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*/
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <linux/net.h>
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#include <net/ax25.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/sock.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <linux/fcntl.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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static void ax25_heartbeat_expiry(unsigned long);
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static void ax25_heartbeat_expiry(unsigned long);
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static void ax25_t1timer_expiry(unsigned long);
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static void ax25_t1timer_expiry(unsigned long);
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static void ax25_t2timer_expiry(unsigned long);
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static void ax25_t2timer_expiry(unsigned long);
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static void ax25_t3timer_expiry(unsigned long);
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static void ax25_t3timer_expiry(unsigned long);
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static void ax25_idletimer_expiry(unsigned long);
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static void ax25_idletimer_expiry(unsigned long);
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void ax25_start_heartbeat(ax25_cb *ax25)
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void ax25_start_heartbeat(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->timer);
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del_timer(&ax25->timer);
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ax25->timer.data = (unsigned long)ax25;
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ax25->timer.data = (unsigned long)ax25;
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ax25->timer.function = &ax25_heartbeat_expiry;
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ax25->timer.function = &ax25_heartbeat_expiry;
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ax25->timer.expires = jiffies + 5 * HZ;
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ax25->timer.expires = jiffies + 5 * HZ;
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add_timer(&ax25->timer);
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add_timer(&ax25->timer);
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}
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}
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void ax25_start_t1timer(ax25_cb *ax25)
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void ax25_start_t1timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t1timer);
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del_timer(&ax25->t1timer);
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ax25->t1timer.data = (unsigned long)ax25;
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ax25->t1timer.data = (unsigned long)ax25;
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ax25->t1timer.function = &ax25_t1timer_expiry;
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ax25->t1timer.function = &ax25_t1timer_expiry;
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ax25->t1timer.expires = jiffies + ax25->t1;
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ax25->t1timer.expires = jiffies + ax25->t1;
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add_timer(&ax25->t1timer);
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add_timer(&ax25->t1timer);
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}
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}
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void ax25_start_t2timer(ax25_cb *ax25)
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void ax25_start_t2timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t2timer);
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del_timer(&ax25->t2timer);
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ax25->t2timer.data = (unsigned long)ax25;
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ax25->t2timer.data = (unsigned long)ax25;
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ax25->t2timer.function = &ax25_t2timer_expiry;
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ax25->t2timer.function = &ax25_t2timer_expiry;
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ax25->t2timer.expires = jiffies + ax25->t2;
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ax25->t2timer.expires = jiffies + ax25->t2;
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add_timer(&ax25->t2timer);
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add_timer(&ax25->t2timer);
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}
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}
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void ax25_start_t3timer(ax25_cb *ax25)
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void ax25_start_t3timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t3timer);
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del_timer(&ax25->t3timer);
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if (ax25->t3 > 0) {
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if (ax25->t3 > 0) {
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ax25->t3timer.data = (unsigned long)ax25;
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ax25->t3timer.data = (unsigned long)ax25;
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ax25->t3timer.function = &ax25_t3timer_expiry;
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ax25->t3timer.function = &ax25_t3timer_expiry;
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ax25->t3timer.expires = jiffies + ax25->t3;
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ax25->t3timer.expires = jiffies + ax25->t3;
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add_timer(&ax25->t3timer);
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add_timer(&ax25->t3timer);
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}
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}
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}
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}
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void ax25_start_idletimer(ax25_cb *ax25)
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void ax25_start_idletimer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->idletimer);
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del_timer(&ax25->idletimer);
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if (ax25->idle > 0) {
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if (ax25->idle > 0) {
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ax25->idletimer.data = (unsigned long)ax25;
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ax25->idletimer.data = (unsigned long)ax25;
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ax25->idletimer.function = &ax25_idletimer_expiry;
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ax25->idletimer.function = &ax25_idletimer_expiry;
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ax25->idletimer.expires = jiffies + ax25->idle;
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ax25->idletimer.expires = jiffies + ax25->idle;
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add_timer(&ax25->idletimer);
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add_timer(&ax25->idletimer);
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}
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}
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}
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}
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void ax25_stop_heartbeat(ax25_cb *ax25)
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void ax25_stop_heartbeat(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->timer);
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del_timer(&ax25->timer);
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}
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}
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void ax25_stop_t1timer(ax25_cb *ax25)
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void ax25_stop_t1timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t1timer);
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del_timer(&ax25->t1timer);
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}
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}
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void ax25_stop_t2timer(ax25_cb *ax25)
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void ax25_stop_t2timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t2timer);
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del_timer(&ax25->t2timer);
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}
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}
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void ax25_stop_t3timer(ax25_cb *ax25)
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void ax25_stop_t3timer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->t3timer);
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del_timer(&ax25->t3timer);
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}
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}
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void ax25_stop_idletimer(ax25_cb *ax25)
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void ax25_stop_idletimer(ax25_cb *ax25)
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{
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{
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del_timer(&ax25->idletimer);
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del_timer(&ax25->idletimer);
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}
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}
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int ax25_t1timer_running(ax25_cb *ax25)
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int ax25_t1timer_running(ax25_cb *ax25)
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{
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{
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return timer_pending(&ax25->t1timer);
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return timer_pending(&ax25->t1timer);
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}
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}
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unsigned long ax25_display_timer(struct timer_list *timer)
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unsigned long ax25_display_timer(struct timer_list *timer)
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{
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{
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if (!timer_pending(timer))
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if (!timer_pending(timer))
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return 0;
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return 0;
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return timer->expires - jiffies;
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return timer->expires - jiffies;
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}
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}
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static void ax25_heartbeat_expiry(unsigned long param)
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static void ax25_heartbeat_expiry(unsigned long param)
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{
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{
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ax25_cb *ax25 = (ax25_cb *)param;
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ax25_cb *ax25 = (ax25_cb *)param;
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int proto = AX25_PROTO_STD_SIMPLEX;
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int proto = AX25_PROTO_STD_SIMPLEX;
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if (ax25->ax25_dev)
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if (ax25->ax25_dev)
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proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
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proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
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switch (proto) {
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switch (proto) {
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case AX25_PROTO_STD_SIMPLEX:
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case AX25_PROTO_STD_SIMPLEX:
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case AX25_PROTO_STD_DUPLEX:
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case AX25_PROTO_STD_DUPLEX:
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ax25_std_heartbeat_expiry(ax25);
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ax25_std_heartbeat_expiry(ax25);
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break;
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break;
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#ifdef CONFIG_AX25_DAMA_SLAVE
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#ifdef CONFIG_AX25_DAMA_SLAVE
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case AX25_PROTO_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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if (ax25->ax25_dev->dama.slave)
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ax25_ds_heartbeat_expiry(ax25);
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ax25_ds_heartbeat_expiry(ax25);
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else
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else
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ax25_std_heartbeat_expiry(ax25);
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ax25_std_heartbeat_expiry(ax25);
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break;
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break;
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#endif
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#endif
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}
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}
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}
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}
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static void ax25_t1timer_expiry(unsigned long param)
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static void ax25_t1timer_expiry(unsigned long param)
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{
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{
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ax25_cb *ax25 = (ax25_cb *)param;
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ax25_cb *ax25 = (ax25_cb *)param;
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
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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_SIMPLEX:
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case AX25_PROTO_STD_DUPLEX:
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case AX25_PROTO_STD_DUPLEX:
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ax25_std_t1timer_expiry(ax25);
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ax25_std_t1timer_expiry(ax25);
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break;
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break;
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#ifdef CONFIG_AX25_DAMA_SLAVE
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#ifdef CONFIG_AX25_DAMA_SLAVE
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case AX25_PROTO_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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if (!ax25->ax25_dev->dama.slave)
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ax25_std_t1timer_expiry(ax25);
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ax25_std_t1timer_expiry(ax25);
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break;
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break;
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#endif
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#endif
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}
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}
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}
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}
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static void ax25_t2timer_expiry(unsigned long param)
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static void ax25_t2timer_expiry(unsigned long param)
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{
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{
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ax25_cb *ax25 = (ax25_cb *)param;
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ax25_cb *ax25 = (ax25_cb *)param;
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
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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_SIMPLEX:
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case AX25_PROTO_STD_DUPLEX:
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case AX25_PROTO_STD_DUPLEX:
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ax25_std_t2timer_expiry(ax25);
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ax25_std_t2timer_expiry(ax25);
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break;
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break;
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#ifdef CONFIG_AX25_DAMA_SLAVE
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#ifdef CONFIG_AX25_DAMA_SLAVE
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case AX25_PROTO_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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if (!ax25->ax25_dev->dama.slave)
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ax25_std_t2timer_expiry(ax25);
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ax25_std_t2timer_expiry(ax25);
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break;
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break;
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#endif
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#endif
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}
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}
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}
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}
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static void ax25_t3timer_expiry(unsigned long param)
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static void ax25_t3timer_expiry(unsigned long param)
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{
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{
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ax25_cb *ax25 = (ax25_cb *)param;
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ax25_cb *ax25 = (ax25_cb *)param;
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|
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
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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_SIMPLEX:
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case AX25_PROTO_STD_DUPLEX:
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case AX25_PROTO_STD_DUPLEX:
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ax25_std_t3timer_expiry(ax25);
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ax25_std_t3timer_expiry(ax25);
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break;
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break;
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#ifdef CONFIG_AX25_DAMA_SLAVE
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#ifdef CONFIG_AX25_DAMA_SLAVE
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case AX25_PROTO_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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if (ax25->ax25_dev->dama.slave)
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ax25_ds_t3timer_expiry(ax25);
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ax25_ds_t3timer_expiry(ax25);
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else
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else
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ax25_std_t3timer_expiry(ax25);
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ax25_std_t3timer_expiry(ax25);
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break;
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break;
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#endif
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#endif
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}
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}
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}
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}
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static void ax25_idletimer_expiry(unsigned long param)
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static void ax25_idletimer_expiry(unsigned long param)
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{
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{
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ax25_cb *ax25 = (ax25_cb *)param;
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ax25_cb *ax25 = (ax25_cb *)param;
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|
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switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
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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_SIMPLEX:
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case AX25_PROTO_STD_DUPLEX:
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case AX25_PROTO_STD_DUPLEX:
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ax25_std_idletimer_expiry(ax25);
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ax25_std_idletimer_expiry(ax25);
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break;
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break;
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#ifdef CONFIG_AX25_DAMA_SLAVE
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#ifdef CONFIG_AX25_DAMA_SLAVE
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case AX25_PROTO_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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if (ax25->ax25_dev->dama.slave)
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ax25_ds_idletimer_expiry(ax25);
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ax25_ds_idletimer_expiry(ax25);
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else
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else
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ax25_std_idletimer_expiry(ax25);
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ax25_std_idletimer_expiry(ax25);
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break;
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break;
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#endif
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#endif
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}
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}
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}
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}
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