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1da177e4 LT |
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 | */ | |
1da177e4 LT |
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> | |
70868eac | 20 | #include <linux/module.h> |
1da177e4 LT |
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 | ||
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); | |
42 | ||
21fab4a8 | 43 | void ax25_setup_timers(ax25_cb *ax25) |
1da177e4 | 44 | { |
21fab4a8 JP |
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 | } | |
1da177e4 | 52 | |
21fab4a8 JP |
53 | void ax25_start_heartbeat(ax25_cb *ax25) |
54 | { | |
55 | mod_timer(&ax25->timer, jiffies + 5 * HZ); | |
1da177e4 LT |
56 | } |
57 | ||
58 | void ax25_start_t1timer(ax25_cb *ax25) | |
59 | { | |
21fab4a8 | 60 | mod_timer(&ax25->t1timer, jiffies + ax25->t1); |
1da177e4 LT |
61 | } |
62 | ||
63 | void ax25_start_t2timer(ax25_cb *ax25) | |
64 | { | |
21fab4a8 | 65 | mod_timer(&ax25->t2timer, jiffies + ax25->t2); |
1da177e4 LT |
66 | } |
67 | ||
68 | void ax25_start_t3timer(ax25_cb *ax25) | |
69 | { | |
21fab4a8 JP |
70 | if (ax25->t3 > 0) |
71 | mod_timer(&ax25->t3timer, jiffies + ax25->t3); | |
72 | else | |
73 | del_timer(&ax25->t3timer); | |
1da177e4 LT |
74 | } |
75 | ||
76 | void ax25_start_idletimer(ax25_cb *ax25) | |
77 | { | |
21fab4a8 JP |
78 | if (ax25->idle > 0) |
79 | mod_timer(&ax25->idletimer, jiffies + ax25->idle); | |
80 | else | |
81 | del_timer(&ax25->idletimer); | |
1da177e4 LT |
82 | } |
83 | ||
84 | void ax25_stop_heartbeat(ax25_cb *ax25) | |
85 | { | |
86 | del_timer(&ax25->timer); | |
87 | } | |
88 | ||
89 | void ax25_stop_t1timer(ax25_cb *ax25) | |
90 | { | |
91 | del_timer(&ax25->t1timer); | |
92 | } | |
93 | ||
94 | void ax25_stop_t2timer(ax25_cb *ax25) | |
95 | { | |
96 | del_timer(&ax25->t2timer); | |
97 | } | |
98 | ||
99 | void ax25_stop_t3timer(ax25_cb *ax25) | |
100 | { | |
101 | del_timer(&ax25->t3timer); | |
102 | } | |
103 | ||
104 | void ax25_stop_idletimer(ax25_cb *ax25) | |
105 | { | |
106 | del_timer(&ax25->idletimer); | |
107 | } | |
108 | ||
109 | int ax25_t1timer_running(ax25_cb *ax25) | |
110 | { | |
111 | return timer_pending(&ax25->t1timer); | |
112 | } | |
113 | ||
114 | unsigned 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 | ||
70868eac RB |
122 | EXPORT_SYMBOL(ax25_display_timer); |
123 | ||
1da177e4 LT |
124 | static 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 | ||
149 | static 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 | ||
168 | static 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 | ||
187 | static 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 | ||
208 | static 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 | } |