2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
8 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
9 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
10 * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk)
11 * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
12 * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
13 * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
15 #include <linux/errno.h>
16 #include <linux/types.h>
17 #include <linux/socket.h>
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/jiffies.h>
22 #include <linux/timer.h>
23 #include <linux/string.h>
24 #include <linux/sockios.h>
25 #include <linux/net.h>
27 #include <linux/inet.h>
28 #include <linux/netdevice.h>
29 #include <linux/skbuff.h>
31 #include <asm/uaccess.h>
32 #include <asm/system.h>
33 #include <linux/fcntl.h>
35 #include <linux/interrupt.h>
37 static void ax25_heartbeat_expiry(unsigned long);
38 static void ax25_t1timer_expiry(unsigned long);
39 static void ax25_t2timer_expiry(unsigned long);
40 static void ax25_t3timer_expiry(unsigned long);
41 static void ax25_idletimer_expiry(unsigned long);
43 void ax25_start_heartbeat(ax25_cb *ax25)
45 del_timer(&ax25->timer);
47 ax25->timer.data = (unsigned long)ax25;
48 ax25->timer.function = &ax25_heartbeat_expiry;
49 ax25->timer.expires = jiffies + 5 * HZ;
51 add_timer(&ax25->timer);
54 void ax25_start_t1timer(ax25_cb *ax25)
56 del_timer(&ax25->t1timer);
58 ax25->t1timer.data = (unsigned long)ax25;
59 ax25->t1timer.function = &ax25_t1timer_expiry;
60 ax25->t1timer.expires = jiffies + ax25->t1;
62 add_timer(&ax25->t1timer);
65 void ax25_start_t2timer(ax25_cb *ax25)
67 del_timer(&ax25->t2timer);
69 ax25->t2timer.data = (unsigned long)ax25;
70 ax25->t2timer.function = &ax25_t2timer_expiry;
71 ax25->t2timer.expires = jiffies + ax25->t2;
73 add_timer(&ax25->t2timer);
76 void ax25_start_t3timer(ax25_cb *ax25)
78 del_timer(&ax25->t3timer);
81 ax25->t3timer.data = (unsigned long)ax25;
82 ax25->t3timer.function = &ax25_t3timer_expiry;
83 ax25->t3timer.expires = jiffies + ax25->t3;
85 add_timer(&ax25->t3timer);
89 void ax25_start_idletimer(ax25_cb *ax25)
91 del_timer(&ax25->idletimer);
94 ax25->idletimer.data = (unsigned long)ax25;
95 ax25->idletimer.function = &ax25_idletimer_expiry;
96 ax25->idletimer.expires = jiffies + ax25->idle;
98 add_timer(&ax25->idletimer);
102 void ax25_stop_heartbeat(ax25_cb *ax25)
104 del_timer(&ax25->timer);
107 void ax25_stop_t1timer(ax25_cb *ax25)
109 del_timer(&ax25->t1timer);
112 void ax25_stop_t2timer(ax25_cb *ax25)
114 del_timer(&ax25->t2timer);
117 void ax25_stop_t3timer(ax25_cb *ax25)
119 del_timer(&ax25->t3timer);
122 void ax25_stop_idletimer(ax25_cb *ax25)
124 del_timer(&ax25->idletimer);
127 int ax25_t1timer_running(ax25_cb *ax25)
129 return timer_pending(&ax25->t1timer);
132 unsigned long ax25_display_timer(struct timer_list *timer)
134 if (!timer_pending(timer))
137 return timer->expires - jiffies;
140 EXPORT_SYMBOL(ax25_display_timer);
142 static void ax25_heartbeat_expiry(unsigned long param)
144 int proto = AX25_PROTO_STD_SIMPLEX;
145 ax25_cb *ax25 = (ax25_cb *)param;
148 proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
151 case AX25_PROTO_STD_SIMPLEX:
152 case AX25_PROTO_STD_DUPLEX:
153 ax25_std_heartbeat_expiry(ax25);
156 #ifdef CONFIG_AX25_DAMA_SLAVE
157 case AX25_PROTO_DAMA_SLAVE:
158 if (ax25->ax25_dev->dama.slave)
159 ax25_ds_heartbeat_expiry(ax25);
161 ax25_std_heartbeat_expiry(ax25);
167 static void ax25_t1timer_expiry(unsigned long param)
169 ax25_cb *ax25 = (ax25_cb *)param;
171 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
172 case AX25_PROTO_STD_SIMPLEX:
173 case AX25_PROTO_STD_DUPLEX:
174 ax25_std_t1timer_expiry(ax25);
177 #ifdef CONFIG_AX25_DAMA_SLAVE
178 case AX25_PROTO_DAMA_SLAVE:
179 if (!ax25->ax25_dev->dama.slave)
180 ax25_std_t1timer_expiry(ax25);
186 static void ax25_t2timer_expiry(unsigned long param)
188 ax25_cb *ax25 = (ax25_cb *)param;
190 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
191 case AX25_PROTO_STD_SIMPLEX:
192 case AX25_PROTO_STD_DUPLEX:
193 ax25_std_t2timer_expiry(ax25);
196 #ifdef CONFIG_AX25_DAMA_SLAVE
197 case AX25_PROTO_DAMA_SLAVE:
198 if (!ax25->ax25_dev->dama.slave)
199 ax25_std_t2timer_expiry(ax25);
205 static void ax25_t3timer_expiry(unsigned long param)
207 ax25_cb *ax25 = (ax25_cb *)param;
209 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
210 case AX25_PROTO_STD_SIMPLEX:
211 case AX25_PROTO_STD_DUPLEX:
212 ax25_std_t3timer_expiry(ax25);
215 #ifdef CONFIG_AX25_DAMA_SLAVE
216 case AX25_PROTO_DAMA_SLAVE:
217 if (ax25->ax25_dev->dama.slave)
218 ax25_ds_t3timer_expiry(ax25);
220 ax25_std_t3timer_expiry(ax25);
226 static void ax25_idletimer_expiry(unsigned long param)
228 ax25_cb *ax25 = (ax25_cb *)param;
230 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
231 case AX25_PROTO_STD_SIMPLEX:
232 case AX25_PROTO_STD_DUPLEX:
233 ax25_std_idletimer_expiry(ax25);
236 #ifdef CONFIG_AX25_DAMA_SLAVE
237 case AX25_PROTO_DAMA_SLAVE:
238 if (ax25->ax25_dev->dama.slave)
239 ax25_ds_idletimer_expiry(ax25);
241 ax25_std_idletimer_expiry(ax25);