diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/irda/timer.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/irda/timer.c')
-rw-r--r-- | net/irda/timer.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/net/irda/timer.c b/net/irda/timer.c new file mode 100644 index 000000000000..0e17f976add6 --- /dev/null +++ b/net/irda/timer.c | |||
@@ -0,0 +1,233 @@ | |||
1 | /********************************************************************* | ||
2 | * | ||
3 | * Filename: timer.c | ||
4 | * Version: | ||
5 | * Description: | ||
6 | * Status: Experimental. | ||
7 | * Author: Dag Brattli <dagb@cs.uit.no> | ||
8 | * Created at: Sat Aug 16 00:59:29 1997 | ||
9 | * Modified at: Wed Dec 8 12:50:34 1999 | ||
10 | * Modified by: Dag Brattli <dagb@cs.uit.no> | ||
11 | * | ||
12 | * Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>, | ||
13 | * All Rights Reserved. | ||
14 | * Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com> | ||
15 | * | ||
16 | * This program is free software; you can redistribute it and/or | ||
17 | * modify it under the terms of the GNU General Public License as | ||
18 | * published by the Free Software Foundation; either version 2 of | ||
19 | * the License, or (at your option) any later version. | ||
20 | * | ||
21 | * Neither Dag Brattli nor University of Tromsų admit liability nor | ||
22 | * provide warranty for any of this software. This material is | ||
23 | * provided "AS-IS" and at no charge. | ||
24 | * | ||
25 | ********************************************************************/ | ||
26 | |||
27 | #include <asm/system.h> | ||
28 | #include <linux/config.h> | ||
29 | #include <linux/delay.h> | ||
30 | |||
31 | #include <net/irda/timer.h> | ||
32 | #include <net/irda/irda.h> | ||
33 | #include <net/irda/irda_device.h> | ||
34 | #include <net/irda/irlap.h> | ||
35 | #include <net/irda/irlmp.h> | ||
36 | |||
37 | extern int sysctl_slot_timeout; | ||
38 | |||
39 | static void irlap_slot_timer_expired(void* data); | ||
40 | static void irlap_query_timer_expired(void* data); | ||
41 | static void irlap_final_timer_expired(void* data); | ||
42 | static void irlap_wd_timer_expired(void* data); | ||
43 | static void irlap_backoff_timer_expired(void* data); | ||
44 | static void irlap_media_busy_expired(void* data); | ||
45 | |||
46 | void irlap_start_slot_timer(struct irlap_cb *self, int timeout) | ||
47 | { | ||
48 | irda_start_timer(&self->slot_timer, timeout, (void *) self, | ||
49 | irlap_slot_timer_expired); | ||
50 | } | ||
51 | |||
52 | void irlap_start_query_timer(struct irlap_cb *self, int S, int s) | ||
53 | { | ||
54 | int timeout; | ||
55 | |||
56 | /* Calculate when the peer discovery should end. Normally, we | ||
57 | * get the end-of-discovery frame, so this is just in case | ||
58 | * we miss it. | ||
59 | * Basically, we multiply the number of remaining slots by our | ||
60 | * slot time, plus add some extra time to properly receive the last | ||
61 | * discovery packet (which is longer due to extra discovery info), | ||
62 | * to avoid messing with for incomming connections requests and | ||
63 | * to accomodate devices that perform discovery slower than us. | ||
64 | * Jean II */ | ||
65 | timeout = ((sysctl_slot_timeout * HZ / 1000) * (S - s) | ||
66 | + XIDEXTRA_TIMEOUT + SMALLBUSY_TIMEOUT); | ||
67 | |||
68 | /* Set or re-set the timer. We reset the timer for each received | ||
69 | * discovery query, which allow us to automatically adjust to | ||
70 | * the speed of the peer discovery (faster or slower). Jean II */ | ||
71 | irda_start_timer( &self->query_timer, timeout, (void *) self, | ||
72 | irlap_query_timer_expired); | ||
73 | } | ||
74 | |||
75 | void irlap_start_final_timer(struct irlap_cb *self, int timeout) | ||
76 | { | ||
77 | irda_start_timer(&self->final_timer, timeout, (void *) self, | ||
78 | irlap_final_timer_expired); | ||
79 | } | ||
80 | |||
81 | void irlap_start_wd_timer(struct irlap_cb *self, int timeout) | ||
82 | { | ||
83 | irda_start_timer(&self->wd_timer, timeout, (void *) self, | ||
84 | irlap_wd_timer_expired); | ||
85 | } | ||
86 | |||
87 | void irlap_start_backoff_timer(struct irlap_cb *self, int timeout) | ||
88 | { | ||
89 | irda_start_timer(&self->backoff_timer, timeout, (void *) self, | ||
90 | irlap_backoff_timer_expired); | ||
91 | } | ||
92 | |||
93 | void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout) | ||
94 | { | ||
95 | irda_start_timer(&self->media_busy_timer, timeout, | ||
96 | (void *) self, irlap_media_busy_expired); | ||
97 | } | ||
98 | |||
99 | void irlap_stop_mbusy_timer(struct irlap_cb *self) | ||
100 | { | ||
101 | /* If timer is activated, kill it! */ | ||
102 | del_timer(&self->media_busy_timer); | ||
103 | |||
104 | /* If we are in NDM, there is a bunch of events in LAP that | ||
105 | * that be pending due to the media_busy condition, such as | ||
106 | * CONNECT_REQUEST and SEND_UI_FRAME. If we don't generate | ||
107 | * an event, they will wait forever... | ||
108 | * Jean II */ | ||
109 | if (self->state == LAP_NDM) | ||
110 | irlap_do_event(self, MEDIA_BUSY_TIMER_EXPIRED, NULL, NULL); | ||
111 | } | ||
112 | |||
113 | void irlmp_start_watchdog_timer(struct lsap_cb *self, int timeout) | ||
114 | { | ||
115 | irda_start_timer(&self->watchdog_timer, timeout, (void *) self, | ||
116 | irlmp_watchdog_timer_expired); | ||
117 | } | ||
118 | |||
119 | void irlmp_start_discovery_timer(struct irlmp_cb *self, int timeout) | ||
120 | { | ||
121 | irda_start_timer(&self->discovery_timer, timeout, (void *) self, | ||
122 | irlmp_discovery_timer_expired); | ||
123 | } | ||
124 | |||
125 | void irlmp_start_idle_timer(struct lap_cb *self, int timeout) | ||
126 | { | ||
127 | irda_start_timer(&self->idle_timer, timeout, (void *) self, | ||
128 | irlmp_idle_timer_expired); | ||
129 | } | ||
130 | |||
131 | void irlmp_stop_idle_timer(struct lap_cb *self) | ||
132 | { | ||
133 | /* If timer is activated, kill it! */ | ||
134 | del_timer(&self->idle_timer); | ||
135 | } | ||
136 | |||
137 | /* | ||
138 | * Function irlap_slot_timer_expired (data) | ||
139 | * | ||
140 | * IrLAP slot timer has expired | ||
141 | * | ||
142 | */ | ||
143 | static void irlap_slot_timer_expired(void *data) | ||
144 | { | ||
145 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
146 | |||
147 | IRDA_ASSERT(self != NULL, return;); | ||
148 | IRDA_ASSERT(self->magic == LAP_MAGIC, return;); | ||
149 | |||
150 | irlap_do_event(self, SLOT_TIMER_EXPIRED, NULL, NULL); | ||
151 | } | ||
152 | |||
153 | /* | ||
154 | * Function irlap_query_timer_expired (data) | ||
155 | * | ||
156 | * IrLAP query timer has expired | ||
157 | * | ||
158 | */ | ||
159 | static void irlap_query_timer_expired(void *data) | ||
160 | { | ||
161 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
162 | |||
163 | IRDA_ASSERT(self != NULL, return;); | ||
164 | IRDA_ASSERT(self->magic == LAP_MAGIC, return;); | ||
165 | |||
166 | irlap_do_event(self, QUERY_TIMER_EXPIRED, NULL, NULL); | ||
167 | } | ||
168 | |||
169 | /* | ||
170 | * Function irda_final_timer_expired (data) | ||
171 | * | ||
172 | * | ||
173 | * | ||
174 | */ | ||
175 | static void irlap_final_timer_expired(void *data) | ||
176 | { | ||
177 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
178 | |||
179 | IRDA_ASSERT(self != NULL, return;); | ||
180 | IRDA_ASSERT(self->magic == LAP_MAGIC, return;); | ||
181 | |||
182 | irlap_do_event(self, FINAL_TIMER_EXPIRED, NULL, NULL); | ||
183 | } | ||
184 | |||
185 | /* | ||
186 | * Function irda_wd_timer_expired (data) | ||
187 | * | ||
188 | * | ||
189 | * | ||
190 | */ | ||
191 | static void irlap_wd_timer_expired(void *data) | ||
192 | { | ||
193 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
194 | |||
195 | IRDA_ASSERT(self != NULL, return;); | ||
196 | IRDA_ASSERT(self->magic == LAP_MAGIC, return;); | ||
197 | |||
198 | irlap_do_event(self, WD_TIMER_EXPIRED, NULL, NULL); | ||
199 | } | ||
200 | |||
201 | /* | ||
202 | * Function irda_backoff_timer_expired (data) | ||
203 | * | ||
204 | * | ||
205 | * | ||
206 | */ | ||
207 | static void irlap_backoff_timer_expired(void *data) | ||
208 | { | ||
209 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
210 | |||
211 | IRDA_ASSERT(self != NULL, return;); | ||
212 | IRDA_ASSERT(self->magic == LAP_MAGIC, return;); | ||
213 | |||
214 | irlap_do_event(self, BACKOFF_TIMER_EXPIRED, NULL, NULL); | ||
215 | } | ||
216 | |||
217 | |||
218 | /* | ||
219 | * Function irtty_media_busy_expired (data) | ||
220 | * | ||
221 | * | ||
222 | */ | ||
223 | void irlap_media_busy_expired(void* data) | ||
224 | { | ||
225 | struct irlap_cb *self = (struct irlap_cb *) data; | ||
226 | |||
227 | IRDA_ASSERT(self != NULL, return;); | ||
228 | |||
229 | irda_device_set_media_busy(self->netdev, FALSE); | ||
230 | /* Note : the LAP event will be send in irlap_stop_mbusy_timer(), | ||
231 | * to catch other cases where the flag is cleared (for example | ||
232 | * after a discovery) - Jean II */ | ||
233 | } | ||