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/config.h>
16 #include <linux/errno.h>
17 #include <linux/types.h>
18 #include <linux/socket.h>
20 #include <linux/kernel.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 static void ax25_heartbeat_expiry(unsigned long param)
142 int proto = AX25_PROTO_STD_SIMPLEX;
143 ax25_cb *ax25 = (ax25_cb *)param;
146 proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
149 case AX25_PROTO_STD_SIMPLEX:
150 case AX25_PROTO_STD_DUPLEX:
151 ax25_std_heartbeat_expiry(ax25);
154 #ifdef CONFIG_AX25_DAMA_SLAVE
155 case AX25_PROTO_DAMA_SLAVE:
156 if (ax25->ax25_dev->dama.slave)
157 ax25_ds_heartbeat_expiry(ax25);
159 ax25_std_heartbeat_expiry(ax25);
165 static void ax25_t1timer_expiry(unsigned long param)
167 ax25_cb *ax25 = (ax25_cb *)param;
169 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
170 case AX25_PROTO_STD_SIMPLEX:
171 case AX25_PROTO_STD_DUPLEX:
172 ax25_std_t1timer_expiry(ax25);
175 #ifdef CONFIG_AX25_DAMA_SLAVE
176 case AX25_PROTO_DAMA_SLAVE:
177 if (!ax25->ax25_dev->dama.slave)
178 ax25_std_t1timer_expiry(ax25);
184 static void ax25_t2timer_expiry(unsigned long param)
186 ax25_cb *ax25 = (ax25_cb *)param;
188 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
189 case AX25_PROTO_STD_SIMPLEX:
190 case AX25_PROTO_STD_DUPLEX:
191 ax25_std_t2timer_expiry(ax25);
194 #ifdef CONFIG_AX25_DAMA_SLAVE
195 case AX25_PROTO_DAMA_SLAVE:
196 if (!ax25->ax25_dev->dama.slave)
197 ax25_std_t2timer_expiry(ax25);
203 static void ax25_t3timer_expiry(unsigned long param)
205 ax25_cb *ax25 = (ax25_cb *)param;
207 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
208 case AX25_PROTO_STD_SIMPLEX:
209 case AX25_PROTO_STD_DUPLEX:
210 ax25_std_t3timer_expiry(ax25);
213 #ifdef CONFIG_AX25_DAMA_SLAVE
214 case AX25_PROTO_DAMA_SLAVE:
215 if (ax25->ax25_dev->dama.slave)
216 ax25_ds_t3timer_expiry(ax25);
218 ax25_std_t3timer_expiry(ax25);
224 static void ax25_idletimer_expiry(unsigned long param)
226 ax25_cb *ax25 = (ax25_cb *)param;
228 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
229 case AX25_PROTO_STD_SIMPLEX:
230 case AX25_PROTO_STD_DUPLEX:
231 ax25_std_idletimer_expiry(ax25);
234 #ifdef CONFIG_AX25_DAMA_SLAVE
235 case AX25_PROTO_DAMA_SLAVE:
236 if (ax25->ax25_dev->dama.slave)
237 ax25_ds_idletimer_expiry(ax25);
239 ax25_std_idletimer_expiry(ax25);