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32#include <linux/module.h>
33#include <linux/proc_fs.h>
34#include <linux/seq_file.h>
35#include <linux/init.h>
36
37#include <net/irda/irda.h>
38#include <net/irda/irmod.h>
39#include <net/irda/irlmp.h>
40#include <net/irda/iriap.h>
41#include <net/irda/irttp.h>
42#include <net/irda/irias_object.h>
43
44#include <net/irda/ircomm_event.h>
45#include <net/irda/ircomm_lmp.h>
46#include <net/irda/ircomm_ttp.h>
47#include <net/irda/ircomm_param.h>
48#include <net/irda/ircomm_core.h>
49
50static int __ircomm_close(struct ircomm_cb *self);
51static void ircomm_control_indication(struct ircomm_cb *self,
52 struct sk_buff *skb, int clen);
53
54#ifdef CONFIG_PROC_FS
55extern struct proc_dir_entry *proc_irda;
56static int ircomm_seq_open(struct inode *, struct file *);
57
58static const struct file_operations ircomm_proc_fops = {
59 .owner = THIS_MODULE,
60 .open = ircomm_seq_open,
61 .read = seq_read,
62 .llseek = seq_lseek,
63 .release = seq_release,
64};
65#endif
66
67hashbin_t *ircomm = NULL;
68
69static int __init ircomm_init(void)
70{
71 ircomm = hashbin_new(HB_LOCK);
72 if (ircomm == NULL) {
73 IRDA_ERROR("%s(), can't allocate hashbin!\n", __func__);
74 return -ENOMEM;
75 }
76
77#ifdef CONFIG_PROC_FS
78 { struct proc_dir_entry *ent;
79 ent = proc_create("ircomm", 0, proc_irda, &ircomm_proc_fops);
80 if (!ent) {
81 printk(KERN_ERR "ircomm_init: can't create /proc entry!\n");
82 return -ENODEV;
83 }
84 }
85#endif
86
87 IRDA_MESSAGE("IrCOMM protocol (Dag Brattli)\n");
88
89 return 0;
90}
91
92static void __exit ircomm_cleanup(void)
93{
94 IRDA_DEBUG(2, "%s()\n", __func__ );
95
96 hashbin_delete(ircomm, (FREE_FUNC) __ircomm_close);
97
98#ifdef CONFIG_PROC_FS
99 remove_proc_entry("ircomm", proc_irda);
100#endif
101}
102
103
104
105
106
107
108
109struct ircomm_cb *ircomm_open(notify_t *notify, __u8 service_type, int line)
110{
111 struct ircomm_cb *self = NULL;
112 int ret;
113
114 IRDA_DEBUG(2, "%s(), service_type=0x%02x\n", __func__ ,
115 service_type);
116
117 IRDA_ASSERT(ircomm != NULL, return NULL;);
118
119 self = kzalloc(sizeof(struct ircomm_cb), GFP_ATOMIC);
120 if (self == NULL)
121 return NULL;
122
123 self->notify = *notify;
124 self->magic = IRCOMM_MAGIC;
125
126
127 if (service_type & IRCOMM_3_WIRE_RAW) {
128 self->flow_status = FLOW_START;
129 ret = ircomm_open_lsap(self);
130 } else
131 ret = ircomm_open_tsap(self);
132
133 if (ret < 0) {
134 kfree(self);
135 return NULL;
136 }
137
138 self->service_type = service_type;
139 self->line = line;
140
141 hashbin_insert(ircomm, (irda_queue_t *) self, line, NULL);
142
143 ircomm_next_state(self, IRCOMM_IDLE);
144
145 return self;
146}
147
148EXPORT_SYMBOL(ircomm_open);
149
150
151
152
153
154
155
156static int __ircomm_close(struct ircomm_cb *self)
157{
158 IRDA_DEBUG(2, "%s()\n", __func__ );
159
160
161 ircomm_do_event(self, IRCOMM_DISCONNECT_REQUEST, NULL, NULL);
162
163
164 if (self->tsap) {
165 irttp_close_tsap(self->tsap);
166 self->tsap = NULL;
167 }
168
169
170 if (self->lsap) {
171 irlmp_close_lsap(self->lsap);
172 self->lsap = NULL;
173 }
174 self->magic = 0;
175
176 kfree(self);
177
178 return 0;
179}
180
181
182
183
184
185
186
187int ircomm_close(struct ircomm_cb *self)
188{
189 struct ircomm_cb *entry;
190
191 IRDA_ASSERT(self != NULL, return -EIO;);
192 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EIO;);
193
194 IRDA_DEBUG(0, "%s()\n", __func__ );
195
196 entry = hashbin_remove(ircomm, self->line, NULL);
197
198 IRDA_ASSERT(entry == self, return -1;);
199
200 return __ircomm_close(self);
201}
202
203EXPORT_SYMBOL(ircomm_close);
204
205
206
207
208
209
210
211
212int ircomm_connect_request(struct ircomm_cb *self, __u8 dlsap_sel,
213 __u32 saddr, __u32 daddr, struct sk_buff *skb,
214 __u8 service_type)
215{
216 struct ircomm_info info;
217 int ret;
218
219 IRDA_DEBUG(2 , "%s()\n", __func__ );
220
221 IRDA_ASSERT(self != NULL, return -1;);
222 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
223
224 self->service_type= service_type;
225
226 info.dlsap_sel = dlsap_sel;
227 info.saddr = saddr;
228 info.daddr = daddr;
229
230 ret = ircomm_do_event(self, IRCOMM_CONNECT_REQUEST, skb, &info);
231
232 return ret;
233}
234
235EXPORT_SYMBOL(ircomm_connect_request);
236
237
238
239
240
241
242
243void ircomm_connect_indication(struct ircomm_cb *self, struct sk_buff *skb,
244 struct ircomm_info *info)
245{
246 int clen = 0;
247
248 IRDA_DEBUG(2, "%s()\n", __func__ );
249
250
251 if (skb->len > 0)
252 clen = skb->data[0];
253
254
255
256
257
258
259 if (self->notify.connect_indication)
260 self->notify.connect_indication(self->notify.instance, self,
261 info->qos, info->max_data_size,
262 info->max_header_size, skb);
263 else {
264 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
265 }
266}
267
268
269
270
271
272
273
274int ircomm_connect_response(struct ircomm_cb *self, struct sk_buff *userdata)
275{
276 int ret;
277
278 IRDA_ASSERT(self != NULL, return -1;);
279 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
280
281 IRDA_DEBUG(4, "%s()\n", __func__ );
282
283 ret = ircomm_do_event(self, IRCOMM_CONNECT_RESPONSE, userdata, NULL);
284
285 return ret;
286}
287
288EXPORT_SYMBOL(ircomm_connect_response);
289
290
291
292
293
294
295
296void ircomm_connect_confirm(struct ircomm_cb *self, struct sk_buff *skb,
297 struct ircomm_info *info)
298{
299 IRDA_DEBUG(4, "%s()\n", __func__ );
300
301 if (self->notify.connect_confirm )
302 self->notify.connect_confirm(self->notify.instance,
303 self, info->qos,
304 info->max_data_size,
305 info->max_header_size, skb);
306 else {
307 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
308 }
309}
310
311
312
313
314
315
316
317int ircomm_data_request(struct ircomm_cb *self, struct sk_buff *skb)
318{
319 int ret;
320
321 IRDA_DEBUG(4, "%s()\n", __func__ );
322
323 IRDA_ASSERT(self != NULL, return -EFAULT;);
324 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EFAULT;);
325 IRDA_ASSERT(skb != NULL, return -EFAULT;);
326
327 ret = ircomm_do_event(self, IRCOMM_DATA_REQUEST, skb, NULL);
328
329 return ret;
330}
331
332EXPORT_SYMBOL(ircomm_data_request);
333
334
335
336
337
338
339
340void ircomm_data_indication(struct ircomm_cb *self, struct sk_buff *skb)
341{
342 IRDA_DEBUG(4, "%s()\n", __func__ );
343
344 IRDA_ASSERT(skb->len > 0, return;);
345
346 if (self->notify.data_indication)
347 self->notify.data_indication(self->notify.instance, self, skb);
348 else {
349 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
350 }
351}
352
353
354
355
356
357
358
359void ircomm_process_data(struct ircomm_cb *self, struct sk_buff *skb)
360{
361 int clen;
362
363 IRDA_ASSERT(skb->len > 0, return;);
364
365 clen = skb->data[0];
366
367
368
369
370
371
372
373 if (unlikely(skb->len < (clen + 1))) {
374 IRDA_DEBUG(2, "%s() throwing away illegal frame\n",
375 __func__ );
376 return;
377 }
378
379
380
381
382
383
384 if (clen > 0)
385 ircomm_control_indication(self, skb, clen);
386
387
388 skb_pull(skb, clen+1);
389
390 if (skb->len)
391 ircomm_data_indication(self, skb);
392 else {
393 IRDA_DEBUG(4, "%s(), data was control info only!\n",
394 __func__ );
395 }
396}
397
398
399
400
401
402
403
404int ircomm_control_request(struct ircomm_cb *self, struct sk_buff *skb)
405{
406 int ret;
407
408 IRDA_DEBUG(2, "%s()\n", __func__ );
409
410 IRDA_ASSERT(self != NULL, return -EFAULT;);
411 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EFAULT;);
412 IRDA_ASSERT(skb != NULL, return -EFAULT;);
413
414 ret = ircomm_do_event(self, IRCOMM_CONTROL_REQUEST, skb, NULL);
415
416 return ret;
417}
418
419EXPORT_SYMBOL(ircomm_control_request);
420
421
422
423
424
425
426
427static void ircomm_control_indication(struct ircomm_cb *self,
428 struct sk_buff *skb, int clen)
429{
430 IRDA_DEBUG(2, "%s()\n", __func__ );
431
432
433 if (self->notify.udata_indication) {
434 struct sk_buff *ctrl_skb;
435
436
437 ctrl_skb = skb_clone(skb, GFP_ATOMIC);
438 if (!ctrl_skb)
439 return;
440
441
442 skb_trim(ctrl_skb, clen+1);
443
444 self->notify.udata_indication(self->notify.instance, self,
445 ctrl_skb);
446
447
448
449 dev_kfree_skb(ctrl_skb);
450 } else {
451 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
452 }
453}
454
455
456
457
458
459
460
461int ircomm_disconnect_request(struct ircomm_cb *self, struct sk_buff *userdata)
462{
463 struct ircomm_info info;
464 int ret;
465
466 IRDA_DEBUG(2, "%s()\n", __func__ );
467
468 IRDA_ASSERT(self != NULL, return -1;);
469 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
470
471 ret = ircomm_do_event(self, IRCOMM_DISCONNECT_REQUEST, userdata,
472 &info);
473 return ret;
474}
475
476EXPORT_SYMBOL(ircomm_disconnect_request);
477
478
479
480
481
482
483
484void ircomm_disconnect_indication(struct ircomm_cb *self, struct sk_buff *skb,
485 struct ircomm_info *info)
486{
487 IRDA_DEBUG(2, "%s()\n", __func__ );
488
489 IRDA_ASSERT(info != NULL, return;);
490
491 if (self->notify.disconnect_indication) {
492 self->notify.disconnect_indication(self->notify.instance, self,
493 info->reason, skb);
494 } else {
495 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
496 }
497}
498
499
500
501
502
503
504
505void ircomm_flow_request(struct ircomm_cb *self, LOCAL_FLOW flow)
506{
507 IRDA_DEBUG(2, "%s()\n", __func__ );
508
509 IRDA_ASSERT(self != NULL, return;);
510 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return;);
511
512 if (self->service_type == IRCOMM_3_WIRE_RAW)
513 return;
514
515 irttp_flow_request(self->tsap, flow);
516}
517
518EXPORT_SYMBOL(ircomm_flow_request);
519
520#ifdef CONFIG_PROC_FS
521static void *ircomm_seq_start(struct seq_file *seq, loff_t *pos)
522{
523 struct ircomm_cb *self;
524 loff_t off = 0;
525
526 spin_lock_irq(&ircomm->hb_spinlock);
527
528 for (self = (struct ircomm_cb *) hashbin_get_first(ircomm);
529 self != NULL;
530 self = (struct ircomm_cb *) hashbin_get_next(ircomm)) {
531 if (off++ == *pos)
532 break;
533
534 }
535 return self;
536}
537
538static void *ircomm_seq_next(struct seq_file *seq, void *v, loff_t *pos)
539{
540 ++*pos;
541
542 return (void *) hashbin_get_next(ircomm);
543}
544
545static void ircomm_seq_stop(struct seq_file *seq, void *v)
546{
547 spin_unlock_irq(&ircomm->hb_spinlock);
548}
549
550static int ircomm_seq_show(struct seq_file *seq, void *v)
551{
552 const struct ircomm_cb *self = v;
553
554 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EINVAL; );
555
556 if(self->line < 0x10)
557 seq_printf(seq, "ircomm%d", self->line);
558 else
559 seq_printf(seq, "irlpt%d", self->line - 0x10);
560
561 seq_printf(seq,
562 " state: %s, slsap_sel: %#02x, dlsap_sel: %#02x, mode:",
563 ircomm_state[ self->state],
564 self->slsap_sel, self->dlsap_sel);
565
566 if(self->service_type & IRCOMM_3_WIRE_RAW)
567 seq_printf(seq, " 3-wire-raw");
568 if(self->service_type & IRCOMM_3_WIRE)
569 seq_printf(seq, " 3-wire");
570 if(self->service_type & IRCOMM_9_WIRE)
571 seq_printf(seq, " 9-wire");
572 if(self->service_type & IRCOMM_CENTRONICS)
573 seq_printf(seq, " Centronics");
574 seq_putc(seq, '\n');
575
576 return 0;
577}
578
579static const struct seq_operations ircomm_seq_ops = {
580 .start = ircomm_seq_start,
581 .next = ircomm_seq_next,
582 .stop = ircomm_seq_stop,
583 .show = ircomm_seq_show,
584};
585
586static int ircomm_seq_open(struct inode *inode, struct file *file)
587{
588 return seq_open(file, &ircomm_seq_ops);
589}
590#endif
591
592MODULE_AUTHOR("Dag Brattli <dag@brattli.net>");
593MODULE_DESCRIPTION("IrCOMM protocol");
594MODULE_LICENSE("GPL");
595
596module_init(ircomm_init);
597module_exit(ircomm_cleanup);