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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
5 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
6 * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
7 * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk)
8 * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
9 * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
10 * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
11 */
12#include <linux/errno.h>
13#include <linux/types.h>
14#include <linux/socket.h>
15#include <linux/in.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/jiffies.h>
19#include <linux/timer.h>
20#include <linux/string.h>
21#include <linux/sockios.h>
22#include <linux/net.h>
23#include <net/ax25.h>
24#include <linux/inet.h>
25#include <linux/netdevice.h>
26#include <linux/skbuff.h>
27#include <net/sock.h>
28#include <linux/uaccess.h>
29#include <linux/fcntl.h>
30#include <linux/mm.h>
31#include <linux/interrupt.h>
32
33static void ax25_heartbeat_expiry(struct timer_list *);
34static void ax25_t1timer_expiry(struct timer_list *);
35static void ax25_t2timer_expiry(struct timer_list *);
36static void ax25_t3timer_expiry(struct timer_list *);
37static void ax25_idletimer_expiry(struct timer_list *);
38
39void ax25_setup_timers(ax25_cb *ax25)
40{
41 timer_setup(&ax25->timer, ax25_heartbeat_expiry, 0);
42 timer_setup(&ax25->t1timer, ax25_t1timer_expiry, 0);
43 timer_setup(&ax25->t2timer, ax25_t2timer_expiry, 0);
44 timer_setup(&ax25->t3timer, ax25_t3timer_expiry, 0);
45 timer_setup(&ax25->idletimer, ax25_idletimer_expiry, 0);
46}
47
48void ax25_start_heartbeat(ax25_cb *ax25)
49{
50 mod_timer(&ax25->timer, jiffies + 5 * HZ);
51}
52
53void ax25_start_t1timer(ax25_cb *ax25)
54{
55 mod_timer(&ax25->t1timer, jiffies + ax25->t1);
56}
57
58void ax25_start_t2timer(ax25_cb *ax25)
59{
60 mod_timer(&ax25->t2timer, jiffies + ax25->t2);
61}
62
63void ax25_start_t3timer(ax25_cb *ax25)
64{
65 if (ax25->t3 > 0)
66 mod_timer(&ax25->t3timer, jiffies + ax25->t3);
67 else
68 del_timer(&ax25->t3timer);
69}
70
71void ax25_start_idletimer(ax25_cb *ax25)
72{
73 if (ax25->idle > 0)
74 mod_timer(&ax25->idletimer, jiffies + ax25->idle);
75 else
76 del_timer(&ax25->idletimer);
77}
78
79void ax25_stop_heartbeat(ax25_cb *ax25)
80{
81 del_timer(&ax25->timer);
82}
83
84void ax25_stop_t1timer(ax25_cb *ax25)
85{
86 del_timer(&ax25->t1timer);
87}
88
89void ax25_stop_t2timer(ax25_cb *ax25)
90{
91 del_timer(&ax25->t2timer);
92}
93
94void ax25_stop_t3timer(ax25_cb *ax25)
95{
96 del_timer(&ax25->t3timer);
97}
98
99void ax25_stop_idletimer(ax25_cb *ax25)
100{
101 del_timer(&ax25->idletimer);
102}
103
104int ax25_t1timer_running(ax25_cb *ax25)
105{
106 return timer_pending(&ax25->t1timer);
107}
108
109unsigned long ax25_display_timer(struct timer_list *timer)
110{
111 long delta = timer->expires - jiffies;
112
113 if (!timer_pending(timer))
114 return 0;
115
116 return max(0L, delta);
117}
118
119EXPORT_SYMBOL(ax25_display_timer);
120
121static void ax25_heartbeat_expiry(struct timer_list *t)
122{
123 int proto = AX25_PROTO_STD_SIMPLEX;
124 ax25_cb *ax25 = from_timer(ax25, t, timer);
125
126 if (ax25->ax25_dev)
127 proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
128
129 switch (proto) {
130 case AX25_PROTO_STD_SIMPLEX:
131 case AX25_PROTO_STD_DUPLEX:
132 ax25_std_heartbeat_expiry(ax25);
133 break;
134
135#ifdef CONFIG_AX25_DAMA_SLAVE
136 case AX25_PROTO_DAMA_SLAVE:
137 if (ax25->ax25_dev->dama.slave)
138 ax25_ds_heartbeat_expiry(ax25);
139 else
140 ax25_std_heartbeat_expiry(ax25);
141 break;
142#endif
143 }
144}
145
146static void ax25_t1timer_expiry(struct timer_list *t)
147{
148 ax25_cb *ax25 = from_timer(ax25, t, t1timer);
149
150 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
151 case AX25_PROTO_STD_SIMPLEX:
152 case AX25_PROTO_STD_DUPLEX:
153 ax25_std_t1timer_expiry(ax25);
154 break;
155
156#ifdef CONFIG_AX25_DAMA_SLAVE
157 case AX25_PROTO_DAMA_SLAVE:
158 if (!ax25->ax25_dev->dama.slave)
159 ax25_std_t1timer_expiry(ax25);
160 break;
161#endif
162 }
163}
164
165static void ax25_t2timer_expiry(struct timer_list *t)
166{
167 ax25_cb *ax25 = from_timer(ax25, t, t2timer);
168
169 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
170 case AX25_PROTO_STD_SIMPLEX:
171 case AX25_PROTO_STD_DUPLEX:
172 ax25_std_t2timer_expiry(ax25);
173 break;
174
175#ifdef CONFIG_AX25_DAMA_SLAVE
176 case AX25_PROTO_DAMA_SLAVE:
177 if (!ax25->ax25_dev->dama.slave)
178 ax25_std_t2timer_expiry(ax25);
179 break;
180#endif
181 }
182}
183
184static void ax25_t3timer_expiry(struct timer_list *t)
185{
186 ax25_cb *ax25 = from_timer(ax25, t, t3timer);
187
188 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
189 case AX25_PROTO_STD_SIMPLEX:
190 case AX25_PROTO_STD_DUPLEX:
191 ax25_std_t3timer_expiry(ax25);
192 break;
193
194#ifdef CONFIG_AX25_DAMA_SLAVE
195 case AX25_PROTO_DAMA_SLAVE:
196 if (ax25->ax25_dev->dama.slave)
197 ax25_ds_t3timer_expiry(ax25);
198 else
199 ax25_std_t3timer_expiry(ax25);
200 break;
201#endif
202 }
203}
204
205static void ax25_idletimer_expiry(struct timer_list *t)
206{
207 ax25_cb *ax25 = from_timer(ax25, t, idletimer);
208
209 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
210 case AX25_PROTO_STD_SIMPLEX:
211 case AX25_PROTO_STD_DUPLEX:
212 ax25_std_idletimer_expiry(ax25);
213 break;
214
215#ifdef CONFIG_AX25_DAMA_SLAVE
216 case AX25_PROTO_DAMA_SLAVE:
217 if (ax25->ax25_dev->dama.slave)
218 ax25_ds_idletimer_expiry(ax25);
219 else
220 ax25_std_idletimer_expiry(ax25);
221 break;
222#endif
223 }
224}
1/*
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.
6 *
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)
14 */
15#include <linux/errno.h>
16#include <linux/types.h>
17#include <linux/socket.h>
18#include <linux/in.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>
26#include <net/ax25.h>
27#include <linux/inet.h>
28#include <linux/netdevice.h>
29#include <linux/skbuff.h>
30#include <net/sock.h>
31#include <asm/uaccess.h>
32#include <asm/system.h>
33#include <linux/fcntl.h>
34#include <linux/mm.h>
35#include <linux/interrupt.h>
36
37static void ax25_heartbeat_expiry(unsigned long);
38static void ax25_t1timer_expiry(unsigned long);
39static void ax25_t2timer_expiry(unsigned long);
40static void ax25_t3timer_expiry(unsigned long);
41static void ax25_idletimer_expiry(unsigned long);
42
43void ax25_setup_timers(ax25_cb *ax25)
44{
45 setup_timer(&ax25->timer, ax25_heartbeat_expiry, (unsigned long)ax25);
46 setup_timer(&ax25->t1timer, ax25_t1timer_expiry, (unsigned long)ax25);
47 setup_timer(&ax25->t2timer, ax25_t2timer_expiry, (unsigned long)ax25);
48 setup_timer(&ax25->t3timer, ax25_t3timer_expiry, (unsigned long)ax25);
49 setup_timer(&ax25->idletimer, ax25_idletimer_expiry,
50 (unsigned long)ax25);
51}
52
53void ax25_start_heartbeat(ax25_cb *ax25)
54{
55 mod_timer(&ax25->timer, jiffies + 5 * HZ);
56}
57
58void ax25_start_t1timer(ax25_cb *ax25)
59{
60 mod_timer(&ax25->t1timer, jiffies + ax25->t1);
61}
62
63void ax25_start_t2timer(ax25_cb *ax25)
64{
65 mod_timer(&ax25->t2timer, jiffies + ax25->t2);
66}
67
68void ax25_start_t3timer(ax25_cb *ax25)
69{
70 if (ax25->t3 > 0)
71 mod_timer(&ax25->t3timer, jiffies + ax25->t3);
72 else
73 del_timer(&ax25->t3timer);
74}
75
76void ax25_start_idletimer(ax25_cb *ax25)
77{
78 if (ax25->idle > 0)
79 mod_timer(&ax25->idletimer, jiffies + ax25->idle);
80 else
81 del_timer(&ax25->idletimer);
82}
83
84void ax25_stop_heartbeat(ax25_cb *ax25)
85{
86 del_timer(&ax25->timer);
87}
88
89void ax25_stop_t1timer(ax25_cb *ax25)
90{
91 del_timer(&ax25->t1timer);
92}
93
94void ax25_stop_t2timer(ax25_cb *ax25)
95{
96 del_timer(&ax25->t2timer);
97}
98
99void ax25_stop_t3timer(ax25_cb *ax25)
100{
101 del_timer(&ax25->t3timer);
102}
103
104void ax25_stop_idletimer(ax25_cb *ax25)
105{
106 del_timer(&ax25->idletimer);
107}
108
109int ax25_t1timer_running(ax25_cb *ax25)
110{
111 return timer_pending(&ax25->t1timer);
112}
113
114unsigned long ax25_display_timer(struct timer_list *timer)
115{
116 if (!timer_pending(timer))
117 return 0;
118
119 return timer->expires - jiffies;
120}
121
122EXPORT_SYMBOL(ax25_display_timer);
123
124static void ax25_heartbeat_expiry(unsigned long param)
125{
126 int proto = AX25_PROTO_STD_SIMPLEX;
127 ax25_cb *ax25 = (ax25_cb *)param;
128
129 if (ax25->ax25_dev)
130 proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL];
131
132 switch (proto) {
133 case AX25_PROTO_STD_SIMPLEX:
134 case AX25_PROTO_STD_DUPLEX:
135 ax25_std_heartbeat_expiry(ax25);
136 break;
137
138#ifdef CONFIG_AX25_DAMA_SLAVE
139 case AX25_PROTO_DAMA_SLAVE:
140 if (ax25->ax25_dev->dama.slave)
141 ax25_ds_heartbeat_expiry(ax25);
142 else
143 ax25_std_heartbeat_expiry(ax25);
144 break;
145#endif
146 }
147}
148
149static void ax25_t1timer_expiry(unsigned long param)
150{
151 ax25_cb *ax25 = (ax25_cb *)param;
152
153 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
154 case AX25_PROTO_STD_SIMPLEX:
155 case AX25_PROTO_STD_DUPLEX:
156 ax25_std_t1timer_expiry(ax25);
157 break;
158
159#ifdef CONFIG_AX25_DAMA_SLAVE
160 case AX25_PROTO_DAMA_SLAVE:
161 if (!ax25->ax25_dev->dama.slave)
162 ax25_std_t1timer_expiry(ax25);
163 break;
164#endif
165 }
166}
167
168static void ax25_t2timer_expiry(unsigned long param)
169{
170 ax25_cb *ax25 = (ax25_cb *)param;
171
172 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
173 case AX25_PROTO_STD_SIMPLEX:
174 case AX25_PROTO_STD_DUPLEX:
175 ax25_std_t2timer_expiry(ax25);
176 break;
177
178#ifdef CONFIG_AX25_DAMA_SLAVE
179 case AX25_PROTO_DAMA_SLAVE:
180 if (!ax25->ax25_dev->dama.slave)
181 ax25_std_t2timer_expiry(ax25);
182 break;
183#endif
184 }
185}
186
187static void ax25_t3timer_expiry(unsigned long param)
188{
189 ax25_cb *ax25 = (ax25_cb *)param;
190
191 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
192 case AX25_PROTO_STD_SIMPLEX:
193 case AX25_PROTO_STD_DUPLEX:
194 ax25_std_t3timer_expiry(ax25);
195 break;
196
197#ifdef CONFIG_AX25_DAMA_SLAVE
198 case AX25_PROTO_DAMA_SLAVE:
199 if (ax25->ax25_dev->dama.slave)
200 ax25_ds_t3timer_expiry(ax25);
201 else
202 ax25_std_t3timer_expiry(ax25);
203 break;
204#endif
205 }
206}
207
208static void ax25_idletimer_expiry(unsigned long param)
209{
210 ax25_cb *ax25 = (ax25_cb *)param;
211
212 switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
213 case AX25_PROTO_STD_SIMPLEX:
214 case AX25_PROTO_STD_DUPLEX:
215 ax25_std_idletimer_expiry(ax25);
216 break;
217
218#ifdef CONFIG_AX25_DAMA_SLAVE
219 case AX25_PROTO_DAMA_SLAVE:
220 if (ax25->ax25_dev->dama.slave)
221 ax25_ds_idletimer_expiry(ax25);
222 else
223 ax25_std_idletimer_expiry(ax25);
224 break;
225#endif
226 }
227}