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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#include <linux/slab.h>
37
38#include <net/irda/irda.h>
39#include <net/irda/irmod.h>
40#include <net/irda/irlmp.h>
41#include <net/irda/iriap.h>
42#include <net/irda/irttp.h>
43#include <net/irda/irias_object.h>
44
45#include <net/irda/ircomm_event.h>
46#include <net/irda/ircomm_lmp.h>
47#include <net/irda/ircomm_ttp.h>
48#include <net/irda/ircomm_param.h>
49#include <net/irda/ircomm_core.h>
50
51static int __ircomm_close(struct ircomm_cb *self);
52static void ircomm_control_indication(struct ircomm_cb *self,
53 struct sk_buff *skb, int clen);
54
55#ifdef CONFIG_PROC_FS
56extern struct proc_dir_entry *proc_irda;
57static int ircomm_seq_open(struct inode *, struct file *);
58
59static const struct file_operations ircomm_proc_fops = {
60 .owner = THIS_MODULE,
61 .open = ircomm_seq_open,
62 .read = seq_read,
63 .llseek = seq_lseek,
64 .release = seq_release,
65};
66#endif
67
68hashbin_t *ircomm = NULL;
69
70static int __init ircomm_init(void)
71{
72 ircomm = hashbin_new(HB_LOCK);
73 if (ircomm == NULL) {
74 IRDA_ERROR("%s(), can't allocate hashbin!\n", __func__);
75 return -ENOMEM;
76 }
77
78#ifdef CONFIG_PROC_FS
79 { struct proc_dir_entry *ent;
80 ent = proc_create("ircomm", 0, proc_irda, &ircomm_proc_fops);
81 if (!ent) {
82 printk(KERN_ERR "ircomm_init: can't create /proc entry!\n");
83 return -ENODEV;
84 }
85 }
86#endif
87
88 IRDA_MESSAGE("IrCOMM protocol (Dag Brattli)\n");
89
90 return 0;
91}
92
93static void __exit ircomm_cleanup(void)
94{
95 IRDA_DEBUG(2, "%s()\n", __func__ );
96
97 hashbin_delete(ircomm, (FREE_FUNC) __ircomm_close);
98
99#ifdef CONFIG_PROC_FS
100 remove_proc_entry("ircomm", proc_irda);
101#endif
102}
103
104
105
106
107
108
109
110struct ircomm_cb *ircomm_open(notify_t *notify, __u8 service_type, int line)
111{
112 struct ircomm_cb *self = NULL;
113 int ret;
114
115 IRDA_DEBUG(2, "%s(), service_type=0x%02x\n", __func__ ,
116 service_type);
117
118 IRDA_ASSERT(ircomm != NULL, return NULL;);
119
120 self = kzalloc(sizeof(struct ircomm_cb), GFP_ATOMIC);
121 if (self == NULL)
122 return NULL;
123
124 self->notify = *notify;
125 self->magic = IRCOMM_MAGIC;
126
127
128 if (service_type & IRCOMM_3_WIRE_RAW) {
129 self->flow_status = FLOW_START;
130 ret = ircomm_open_lsap(self);
131 } else
132 ret = ircomm_open_tsap(self);
133
134 if (ret < 0) {
135 kfree(self);
136 return NULL;
137 }
138
139 self->service_type = service_type;
140 self->line = line;
141
142 hashbin_insert(ircomm, (irda_queue_t *) self, line, NULL);
143
144 ircomm_next_state(self, IRCOMM_IDLE);
145
146 return self;
147}
148
149EXPORT_SYMBOL(ircomm_open);
150
151
152
153
154
155
156
157static int __ircomm_close(struct ircomm_cb *self)
158{
159 IRDA_DEBUG(2, "%s()\n", __func__ );
160
161
162 ircomm_do_event(self, IRCOMM_DISCONNECT_REQUEST, NULL, NULL);
163
164
165 if (self->tsap) {
166 irttp_close_tsap(self->tsap);
167 self->tsap = NULL;
168 }
169
170
171 if (self->lsap) {
172 irlmp_close_lsap(self->lsap);
173 self->lsap = NULL;
174 }
175 self->magic = 0;
176
177 kfree(self);
178
179 return 0;
180}
181
182
183
184
185
186
187
188int ircomm_close(struct ircomm_cb *self)
189{
190 struct ircomm_cb *entry;
191
192 IRDA_ASSERT(self != NULL, return -EIO;);
193 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EIO;);
194
195 IRDA_DEBUG(0, "%s()\n", __func__ );
196
197 entry = hashbin_remove(ircomm, self->line, NULL);
198
199 IRDA_ASSERT(entry == self, return -1;);
200
201 return __ircomm_close(self);
202}
203
204EXPORT_SYMBOL(ircomm_close);
205
206
207
208
209
210
211
212
213int ircomm_connect_request(struct ircomm_cb *self, __u8 dlsap_sel,
214 __u32 saddr, __u32 daddr, struct sk_buff *skb,
215 __u8 service_type)
216{
217 struct ircomm_info info;
218 int ret;
219
220 IRDA_DEBUG(2 , "%s()\n", __func__ );
221
222 IRDA_ASSERT(self != NULL, return -1;);
223 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
224
225 self->service_type= service_type;
226
227 info.dlsap_sel = dlsap_sel;
228 info.saddr = saddr;
229 info.daddr = daddr;
230
231 ret = ircomm_do_event(self, IRCOMM_CONNECT_REQUEST, skb, &info);
232
233 return ret;
234}
235
236EXPORT_SYMBOL(ircomm_connect_request);
237
238
239
240
241
242
243
244void ircomm_connect_indication(struct ircomm_cb *self, struct sk_buff *skb,
245 struct ircomm_info *info)
246{
247 int clen = 0;
248
249 IRDA_DEBUG(2, "%s()\n", __func__ );
250
251
252 if (skb->len > 0)
253 clen = skb->data[0];
254
255
256
257
258
259
260 if (self->notify.connect_indication)
261 self->notify.connect_indication(self->notify.instance, self,
262 info->qos, info->max_data_size,
263 info->max_header_size, skb);
264 else {
265 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
266 }
267}
268
269
270
271
272
273
274
275int ircomm_connect_response(struct ircomm_cb *self, struct sk_buff *userdata)
276{
277 int ret;
278
279 IRDA_ASSERT(self != NULL, return -1;);
280 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
281
282 IRDA_DEBUG(4, "%s()\n", __func__ );
283
284 ret = ircomm_do_event(self, IRCOMM_CONNECT_RESPONSE, userdata, NULL);
285
286 return ret;
287}
288
289EXPORT_SYMBOL(ircomm_connect_response);
290
291
292
293
294
295
296
297void ircomm_connect_confirm(struct ircomm_cb *self, struct sk_buff *skb,
298 struct ircomm_info *info)
299{
300 IRDA_DEBUG(4, "%s()\n", __func__ );
301
302 if (self->notify.connect_confirm )
303 self->notify.connect_confirm(self->notify.instance,
304 self, info->qos,
305 info->max_data_size,
306 info->max_header_size, skb);
307 else {
308 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
309 }
310}
311
312
313
314
315
316
317
318int ircomm_data_request(struct ircomm_cb *self, struct sk_buff *skb)
319{
320 int ret;
321
322 IRDA_DEBUG(4, "%s()\n", __func__ );
323
324 IRDA_ASSERT(self != NULL, return -EFAULT;);
325 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EFAULT;);
326 IRDA_ASSERT(skb != NULL, return -EFAULT;);
327
328 ret = ircomm_do_event(self, IRCOMM_DATA_REQUEST, skb, NULL);
329
330 return ret;
331}
332
333EXPORT_SYMBOL(ircomm_data_request);
334
335
336
337
338
339
340
341void ircomm_data_indication(struct ircomm_cb *self, struct sk_buff *skb)
342{
343 IRDA_DEBUG(4, "%s()\n", __func__ );
344
345 IRDA_ASSERT(skb->len > 0, return;);
346
347 if (self->notify.data_indication)
348 self->notify.data_indication(self->notify.instance, self, skb);
349 else {
350 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
351 }
352}
353
354
355
356
357
358
359
360void ircomm_process_data(struct ircomm_cb *self, struct sk_buff *skb)
361{
362 int clen;
363
364 IRDA_ASSERT(skb->len > 0, return;);
365
366 clen = skb->data[0];
367
368
369
370
371
372
373
374 if (unlikely(skb->len < (clen + 1))) {
375 IRDA_DEBUG(2, "%s() throwing away illegal frame\n",
376 __func__ );
377 return;
378 }
379
380
381
382
383
384
385 if (clen > 0)
386 ircomm_control_indication(self, skb, clen);
387
388
389 skb_pull(skb, clen+1);
390
391 if (skb->len)
392 ircomm_data_indication(self, skb);
393 else {
394 IRDA_DEBUG(4, "%s(), data was control info only!\n",
395 __func__ );
396 }
397}
398
399
400
401
402
403
404
405int ircomm_control_request(struct ircomm_cb *self, struct sk_buff *skb)
406{
407 int ret;
408
409 IRDA_DEBUG(2, "%s()\n", __func__ );
410
411 IRDA_ASSERT(self != NULL, return -EFAULT;);
412 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EFAULT;);
413 IRDA_ASSERT(skb != NULL, return -EFAULT;);
414
415 ret = ircomm_do_event(self, IRCOMM_CONTROL_REQUEST, skb, NULL);
416
417 return ret;
418}
419
420EXPORT_SYMBOL(ircomm_control_request);
421
422
423
424
425
426
427
428static void ircomm_control_indication(struct ircomm_cb *self,
429 struct sk_buff *skb, int clen)
430{
431 IRDA_DEBUG(2, "%s()\n", __func__ );
432
433
434 if (self->notify.udata_indication) {
435 struct sk_buff *ctrl_skb;
436
437
438 ctrl_skb = skb_clone(skb, GFP_ATOMIC);
439 if (!ctrl_skb)
440 return;
441
442
443 skb_trim(ctrl_skb, clen+1);
444
445 self->notify.udata_indication(self->notify.instance, self,
446 ctrl_skb);
447
448
449
450 dev_kfree_skb(ctrl_skb);
451 } else {
452 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
453 }
454}
455
456
457
458
459
460
461
462int ircomm_disconnect_request(struct ircomm_cb *self, struct sk_buff *userdata)
463{
464 struct ircomm_info info;
465 int ret;
466
467 IRDA_DEBUG(2, "%s()\n", __func__ );
468
469 IRDA_ASSERT(self != NULL, return -1;);
470 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -1;);
471
472 ret = ircomm_do_event(self, IRCOMM_DISCONNECT_REQUEST, userdata,
473 &info);
474 return ret;
475}
476
477EXPORT_SYMBOL(ircomm_disconnect_request);
478
479
480
481
482
483
484
485void ircomm_disconnect_indication(struct ircomm_cb *self, struct sk_buff *skb,
486 struct ircomm_info *info)
487{
488 IRDA_DEBUG(2, "%s()\n", __func__ );
489
490 IRDA_ASSERT(info != NULL, return;);
491
492 if (self->notify.disconnect_indication) {
493 self->notify.disconnect_indication(self->notify.instance, self,
494 info->reason, skb);
495 } else {
496 IRDA_DEBUG(0, "%s(), missing handler\n", __func__ );
497 }
498}
499
500
501
502
503
504
505
506void ircomm_flow_request(struct ircomm_cb *self, LOCAL_FLOW flow)
507{
508 IRDA_DEBUG(2, "%s()\n", __func__ );
509
510 IRDA_ASSERT(self != NULL, return;);
511 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return;);
512
513 if (self->service_type == IRCOMM_3_WIRE_RAW)
514 return;
515
516 irttp_flow_request(self->tsap, flow);
517}
518
519EXPORT_SYMBOL(ircomm_flow_request);
520
521#ifdef CONFIG_PROC_FS
522static void *ircomm_seq_start(struct seq_file *seq, loff_t *pos)
523{
524 struct ircomm_cb *self;
525 loff_t off = 0;
526
527 spin_lock_irq(&ircomm->hb_spinlock);
528
529 for (self = (struct ircomm_cb *) hashbin_get_first(ircomm);
530 self != NULL;
531 self = (struct ircomm_cb *) hashbin_get_next(ircomm)) {
532 if (off++ == *pos)
533 break;
534
535 }
536 return self;
537}
538
539static void *ircomm_seq_next(struct seq_file *seq, void *v, loff_t *pos)
540{
541 ++*pos;
542
543 return (void *) hashbin_get_next(ircomm);
544}
545
546static void ircomm_seq_stop(struct seq_file *seq, void *v)
547{
548 spin_unlock_irq(&ircomm->hb_spinlock);
549}
550
551static int ircomm_seq_show(struct seq_file *seq, void *v)
552{
553 const struct ircomm_cb *self = v;
554
555 IRDA_ASSERT(self->magic == IRCOMM_MAGIC, return -EINVAL; );
556
557 if(self->line < 0x10)
558 seq_printf(seq, "ircomm%d", self->line);
559 else
560 seq_printf(seq, "irlpt%d", self->line - 0x10);
561
562 seq_printf(seq,
563 " state: %s, slsap_sel: %#02x, dlsap_sel: %#02x, mode:",
564 ircomm_state[ self->state],
565 self->slsap_sel, self->dlsap_sel);
566
567 if(self->service_type & IRCOMM_3_WIRE_RAW)
568 seq_printf(seq, " 3-wire-raw");
569 if(self->service_type & IRCOMM_3_WIRE)
570 seq_printf(seq, " 3-wire");
571 if(self->service_type & IRCOMM_9_WIRE)
572 seq_printf(seq, " 9-wire");
573 if(self->service_type & IRCOMM_CENTRONICS)
574 seq_printf(seq, " Centronics");
575 seq_putc(seq, '\n');
576
577 return 0;
578}
579
580static const struct seq_operations ircomm_seq_ops = {
581 .start = ircomm_seq_start,
582 .next = ircomm_seq_next,
583 .stop = ircomm_seq_stop,
584 .show = ircomm_seq_show,
585};
586
587static int ircomm_seq_open(struct inode *inode, struct file *file)
588{
589 return seq_open(file, &ircomm_seq_ops);
590}
591#endif
592
593MODULE_AUTHOR("Dag Brattli <dag@brattli.net>");
594MODULE_DESCRIPTION("IrCOMM protocol");
595MODULE_LICENSE("GPL");
596
597module_init(ircomm_init);
598module_exit(ircomm_cleanup);
599