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irda: Remove IRDA_<TYPE> logging macros
[deliverable/linux.git] / net / irda / iriap.c
1 /*********************************************************************
2 *
3 * Filename: iriap.c
4 * Version: 0.8
5 * Description: Information Access Protocol (IAP)
6 * Status: Experimental.
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Thu Aug 21 00:02:07 1997
9 * Modified at: Sat Dec 25 16:42:42 1999
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
11 *
12 * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
13 * All Rights Reserved.
14 * Copyright (c) 2000-2003 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 Tromsø 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 <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/skbuff.h>
30 #include <linux/fs.h>
31 #include <linux/string.h>
32 #include <linux/init.h>
33 #include <linux/seq_file.h>
34 #include <linux/slab.h>
35
36 #include <asm/byteorder.h>
37 #include <asm/unaligned.h>
38
39 #include <net/irda/irda.h>
40 #include <net/irda/irttp.h>
41 #include <net/irda/irlmp.h>
42 #include <net/irda/irias_object.h>
43 #include <net/irda/iriap_event.h>
44 #include <net/irda/iriap.h>
45
46 #ifdef CONFIG_IRDA_DEBUG
47 /* FIXME: This one should go in irlmp.c */
48 static const char *const ias_charset_types[] = {
49 "CS_ASCII",
50 "CS_ISO_8859_1",
51 "CS_ISO_8859_2",
52 "CS_ISO_8859_3",
53 "CS_ISO_8859_4",
54 "CS_ISO_8859_5",
55 "CS_ISO_8859_6",
56 "CS_ISO_8859_7",
57 "CS_ISO_8859_8",
58 "CS_ISO_8859_9",
59 "CS_UNICODE"
60 };
61 #endif /* CONFIG_IRDA_DEBUG */
62
63 static hashbin_t *iriap = NULL;
64 static void *service_handle;
65
66 static void __iriap_close(struct iriap_cb *self);
67 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode);
68 static void iriap_disconnect_indication(void *instance, void *sap,
69 LM_REASON reason, struct sk_buff *skb);
70 static void iriap_connect_indication(void *instance, void *sap,
71 struct qos_info *qos, __u32 max_sdu_size,
72 __u8 max_header_size,
73 struct sk_buff *skb);
74 static void iriap_connect_confirm(void *instance, void *sap,
75 struct qos_info *qos,
76 __u32 max_sdu_size, __u8 max_header_size,
77 struct sk_buff *skb);
78 static int iriap_data_indication(void *instance, void *sap,
79 struct sk_buff *skb);
80
81 static void iriap_watchdog_timer_expired(void *data);
82
83 static inline void iriap_start_watchdog_timer(struct iriap_cb *self,
84 int timeout)
85 {
86 irda_start_timer(&self->watchdog_timer, timeout, self,
87 iriap_watchdog_timer_expired);
88 }
89
90 static struct lock_class_key irias_objects_key;
91
92 /*
93 * Function iriap_init (void)
94 *
95 * Initializes the IrIAP layer, called by the module initialization code
96 * in irmod.c
97 */
98 int __init iriap_init(void)
99 {
100 struct ias_object *obj;
101 struct iriap_cb *server;
102 __u8 oct_seq[6];
103 __u16 hints;
104
105 /* Allocate master array */
106 iriap = hashbin_new(HB_LOCK);
107 if (!iriap)
108 return -ENOMEM;
109
110 /* Object repository - defined in irias_object.c */
111 irias_objects = hashbin_new(HB_LOCK);
112 if (!irias_objects) {
113 net_warn_ratelimited("%s: Can't allocate irias_objects hashbin!\n",
114 __func__);
115 hashbin_delete(iriap, NULL);
116 return -ENOMEM;
117 }
118
119 lockdep_set_class_and_name(&irias_objects->hb_spinlock, &irias_objects_key,
120 "irias_objects");
121
122 /*
123 * Register some default services for IrLMP
124 */
125 hints = irlmp_service_to_hint(S_COMPUTER);
126 service_handle = irlmp_register_service(hints);
127
128 /* Register the Device object with LM-IAS */
129 obj = irias_new_object("Device", IAS_DEVICE_ID);
130 irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR);
131
132 oct_seq[0] = 0x01; /* Version 1 */
133 oct_seq[1] = 0x00; /* IAS support bits */
134 oct_seq[2] = 0x00; /* LM-MUX support bits */
135 #ifdef CONFIG_IRDA_ULTRA
136 oct_seq[2] |= 0x04; /* Connectionless Data support */
137 #endif
138 irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3,
139 IAS_KERNEL_ATTR);
140 irias_insert_object(obj);
141
142 /*
143 * Register server support with IrLMP so we can accept incoming
144 * connections
145 */
146 server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
147 if (!server) {
148 IRDA_DEBUG(0, "%s(), unable to open server\n", __func__);
149 return -1;
150 }
151 iriap_register_lsap(server, LSAP_IAS, IAS_SERVER);
152
153 return 0;
154 }
155
156 /*
157 * Function iriap_cleanup (void)
158 *
159 * Initializes the IrIAP layer, called by the module cleanup code in
160 * irmod.c
161 */
162 void iriap_cleanup(void)
163 {
164 irlmp_unregister_service(service_handle);
165
166 hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
167 hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object);
168 }
169
170 /*
171 * Function iriap_open (void)
172 *
173 * Opens an instance of the IrIAP layer, and registers with IrLMP
174 */
175 struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv,
176 CONFIRM_CALLBACK callback)
177 {
178 struct iriap_cb *self;
179
180 IRDA_DEBUG(2, "%s()\n", __func__);
181
182 self = kzalloc(sizeof(*self), GFP_ATOMIC);
183 if (!self)
184 return NULL;
185
186 /*
187 * Initialize instance
188 */
189
190 self->magic = IAS_MAGIC;
191 self->mode = mode;
192 if (mode == IAS_CLIENT)
193 iriap_register_lsap(self, slsap_sel, mode);
194
195 self->confirm = callback;
196 self->priv = priv;
197
198 /* iriap_getvaluebyclass_request() will construct packets before
199 * we connect, so this must have a sane value... Jean II */
200 self->max_header_size = LMP_MAX_HEADER;
201
202 init_timer(&self->watchdog_timer);
203
204 hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
205
206 /* Initialize state machines */
207 iriap_next_client_state(self, S_DISCONNECT);
208 iriap_next_call_state(self, S_MAKE_CALL);
209 iriap_next_server_state(self, R_DISCONNECT);
210 iriap_next_r_connect_state(self, R_WAITING);
211
212 return self;
213 }
214 EXPORT_SYMBOL(iriap_open);
215
216 /*
217 * Function __iriap_close (self)
218 *
219 * Removes (deallocates) the IrIAP instance
220 *
221 */
222 static void __iriap_close(struct iriap_cb *self)
223 {
224 IRDA_DEBUG(4, "%s()\n", __func__);
225
226 IRDA_ASSERT(self != NULL, return;);
227 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
228
229 del_timer(&self->watchdog_timer);
230
231 if (self->request_skb)
232 dev_kfree_skb(self->request_skb);
233
234 self->magic = 0;
235
236 kfree(self);
237 }
238
239 /*
240 * Function iriap_close (void)
241 *
242 * Closes IrIAP and deregisters with IrLMP
243 */
244 void iriap_close(struct iriap_cb *self)
245 {
246 struct iriap_cb *entry;
247
248 IRDA_DEBUG(2, "%s()\n", __func__);
249
250 IRDA_ASSERT(self != NULL, return;);
251 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
252
253 if (self->lsap) {
254 irlmp_close_lsap(self->lsap);
255 self->lsap = NULL;
256 }
257
258 entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
259 IRDA_ASSERT(entry == self, return;);
260
261 __iriap_close(self);
262 }
263 EXPORT_SYMBOL(iriap_close);
264
265 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
266 {
267 notify_t notify;
268
269 IRDA_DEBUG(2, "%s()\n", __func__);
270
271 irda_notify_init(&notify);
272 notify.connect_confirm = iriap_connect_confirm;
273 notify.connect_indication = iriap_connect_indication;
274 notify.disconnect_indication = iriap_disconnect_indication;
275 notify.data_indication = iriap_data_indication;
276 notify.instance = self;
277 if (mode == IAS_CLIENT)
278 strcpy(notify.name, "IrIAS cli");
279 else
280 strcpy(notify.name, "IrIAS srv");
281
282 self->lsap = irlmp_open_lsap(slsap_sel, &notify, 0);
283 if (self->lsap == NULL) {
284 net_err_ratelimited("%s: Unable to allocated LSAP!\n",
285 __func__);
286 return -1;
287 }
288 self->slsap_sel = self->lsap->slsap_sel;
289
290 return 0;
291 }
292
293 /*
294 * Function iriap_disconnect_indication (handle, reason)
295 *
296 * Got disconnect, so clean up everything associated with this connection
297 *
298 */
299 static void iriap_disconnect_indication(void *instance, void *sap,
300 LM_REASON reason,
301 struct sk_buff *skb)
302 {
303 struct iriap_cb *self;
304
305 IRDA_DEBUG(4, "%s(), reason=%s [%d]\n", __func__,
306 irlmp_reason_str(reason), reason);
307
308 self = instance;
309
310 IRDA_ASSERT(self != NULL, return;);
311 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
312
313 IRDA_ASSERT(iriap != NULL, return;);
314
315 del_timer(&self->watchdog_timer);
316
317 /* Not needed */
318 if (skb)
319 dev_kfree_skb(skb);
320
321 if (self->mode == IAS_CLIENT) {
322 IRDA_DEBUG(4, "%s(), disconnect as client\n", __func__);
323
324
325 iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
326 NULL);
327 /*
328 * Inform service user that the request failed by sending
329 * it a NULL value. Warning, the client might close us, so
330 * remember no to use self anymore after calling confirm
331 */
332 if (self->confirm)
333 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
334 } else {
335 IRDA_DEBUG(4, "%s(), disconnect as server\n", __func__);
336 iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
337 NULL);
338 iriap_close(self);
339 }
340 }
341
342 /*
343 * Function iriap_disconnect_request (handle)
344 */
345 static void iriap_disconnect_request(struct iriap_cb *self)
346 {
347 struct sk_buff *tx_skb;
348
349 IRDA_DEBUG(4, "%s()\n", __func__);
350
351 IRDA_ASSERT(self != NULL, return;);
352 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
353
354 tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
355 if (tx_skb == NULL) {
356 IRDA_DEBUG(0,
357 "%s(), Could not allocate an sk_buff of length %d\n",
358 __func__, LMP_MAX_HEADER);
359 return;
360 }
361
362 /*
363 * Reserve space for MUX control and LAP header
364 */
365 skb_reserve(tx_skb, LMP_MAX_HEADER);
366
367 irlmp_disconnect_request(self->lsap, tx_skb);
368 }
369
370 /*
371 * Function iriap_getvaluebyclass (addr, name, attr)
372 *
373 * Retrieve all values from attribute in all objects with given class
374 * name
375 */
376 int iriap_getvaluebyclass_request(struct iriap_cb *self,
377 __u32 saddr, __u32 daddr,
378 char *name, char *attr)
379 {
380 struct sk_buff *tx_skb;
381 int name_len, attr_len, skb_len;
382 __u8 *frame;
383
384 IRDA_ASSERT(self != NULL, return -1;);
385 IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;);
386
387 /* Client must supply the destination device address */
388 if (!daddr)
389 return -1;
390
391 self->daddr = daddr;
392 self->saddr = saddr;
393
394 /*
395 * Save operation, so we know what the later indication is about
396 */
397 self->operation = GET_VALUE_BY_CLASS;
398
399 /* Give ourselves 10 secs to finish this operation */
400 iriap_start_watchdog_timer(self, 10*HZ);
401
402 name_len = strlen(name); /* Up to IAS_MAX_CLASSNAME = 60 */
403 attr_len = strlen(attr); /* Up to IAS_MAX_ATTRIBNAME = 60 */
404
405 skb_len = self->max_header_size+2+name_len+1+attr_len+4;
406 tx_skb = alloc_skb(skb_len, GFP_ATOMIC);
407 if (!tx_skb)
408 return -ENOMEM;
409
410 /* Reserve space for MUX and LAP header */
411 skb_reserve(tx_skb, self->max_header_size);
412 skb_put(tx_skb, 3+name_len+attr_len);
413 frame = tx_skb->data;
414
415 /* Build frame */
416 frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
417 frame[1] = name_len; /* Insert length of name */
418 memcpy(frame+2, name, name_len); /* Insert name */
419 frame[2+name_len] = attr_len; /* Insert length of attr */
420 memcpy(frame+3+name_len, attr, attr_len); /* Insert attr */
421
422 iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb);
423
424 /* Drop reference count - see state_s_disconnect(). */
425 dev_kfree_skb(tx_skb);
426
427 return 0;
428 }
429 EXPORT_SYMBOL(iriap_getvaluebyclass_request);
430
431 /*
432 * Function iriap_getvaluebyclass_confirm (self, skb)
433 *
434 * Got result from GetValueByClass command. Parse it and return result
435 * to service user.
436 *
437 */
438 static void iriap_getvaluebyclass_confirm(struct iriap_cb *self,
439 struct sk_buff *skb)
440 {
441 struct ias_value *value;
442 int charset;
443 __u32 value_len;
444 __u32 tmp_cpu32;
445 __u16 obj_id;
446 __u16 len;
447 __u8 type;
448 __u8 *fp;
449 int n;
450
451 IRDA_ASSERT(self != NULL, return;);
452 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
453 IRDA_ASSERT(skb != NULL, return;);
454
455 /* Initialize variables */
456 fp = skb->data;
457 n = 2;
458
459 /* Get length, MSB first */
460 len = get_unaligned_be16(fp + n);
461 n += 2;
462
463 IRDA_DEBUG(4, "%s(), len=%d\n", __func__, len);
464
465 /* Get object ID, MSB first */
466 obj_id = get_unaligned_be16(fp + n);
467 n += 2;
468
469 type = fp[n++];
470 IRDA_DEBUG(4, "%s(), Value type = %d\n", __func__, type);
471
472 switch (type) {
473 case IAS_INTEGER:
474 memcpy(&tmp_cpu32, fp+n, 4); n += 4;
475 be32_to_cpus(&tmp_cpu32);
476 value = irias_new_integer_value(tmp_cpu32);
477
478 /* Legal values restricted to 0x01-0x6f, page 15 irttp */
479 IRDA_DEBUG(4, "%s(), lsap=%d\n", __func__, value->t.integer);
480 break;
481 case IAS_STRING:
482 charset = fp[n++];
483
484 switch (charset) {
485 case CS_ASCII:
486 break;
487 /* case CS_ISO_8859_1: */
488 /* case CS_ISO_8859_2: */
489 /* case CS_ISO_8859_3: */
490 /* case CS_ISO_8859_4: */
491 /* case CS_ISO_8859_5: */
492 /* case CS_ISO_8859_6: */
493 /* case CS_ISO_8859_7: */
494 /* case CS_ISO_8859_8: */
495 /* case CS_ISO_8859_9: */
496 /* case CS_UNICODE: */
497 default:
498 IRDA_DEBUG(0, "%s(), charset [%d] %s, not supported\n",
499 __func__, charset,
500 charset < ARRAY_SIZE(ias_charset_types) ?
501 ias_charset_types[charset] :
502 "(unknown)");
503
504 /* Aborting, close connection! */
505 iriap_disconnect_request(self);
506 return;
507 /* break; */
508 }
509 value_len = fp[n++];
510 IRDA_DEBUG(4, "%s(), strlen=%d\n", __func__, value_len);
511
512 /* Make sure the string is null-terminated */
513 if (n + value_len < skb->len)
514 fp[n + value_len] = 0x00;
515 IRDA_DEBUG(4, "Got string %s\n", fp+n);
516
517 /* Will truncate to IAS_MAX_STRING bytes */
518 value = irias_new_string_value(fp+n);
519 break;
520 case IAS_OCT_SEQ:
521 value_len = get_unaligned_be16(fp + n);
522 n += 2;
523
524 /* Will truncate to IAS_MAX_OCTET_STRING bytes */
525 value = irias_new_octseq_value(fp+n, value_len);
526 break;
527 default:
528 value = irias_new_missing_value();
529 break;
530 }
531
532 /* Finished, close connection! */
533 iriap_disconnect_request(self);
534
535 /* Warning, the client might close us, so remember no to use self
536 * anymore after calling confirm
537 */
538 if (self->confirm)
539 self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
540 else {
541 IRDA_DEBUG(0, "%s(), missing handler!\n", __func__);
542 irias_delete_value(value);
543 }
544 }
545
546 /*
547 * Function iriap_getvaluebyclass_response ()
548 *
549 * Send answer back to remote LM-IAS
550 *
551 */
552 static void iriap_getvaluebyclass_response(struct iriap_cb *self,
553 __u16 obj_id,
554 __u8 ret_code,
555 struct ias_value *value)
556 {
557 struct sk_buff *tx_skb;
558 int n;
559 __be32 tmp_be32;
560 __be16 tmp_be16;
561 __u8 *fp;
562
563 IRDA_DEBUG(4, "%s()\n", __func__);
564
565 IRDA_ASSERT(self != NULL, return;);
566 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
567 IRDA_ASSERT(value != NULL, return;);
568 IRDA_ASSERT(value->len <= 1024, return;);
569
570 /* Initialize variables */
571 n = 0;
572
573 /*
574 * We must adjust the size of the response after the length of the
575 * value. We add 32 bytes because of the 6 bytes for the frame and
576 * max 5 bytes for the value coding.
577 */
578 tx_skb = alloc_skb(value->len + self->max_header_size + 32,
579 GFP_ATOMIC);
580 if (!tx_skb)
581 return;
582
583 /* Reserve space for MUX and LAP header */
584 skb_reserve(tx_skb, self->max_header_size);
585 skb_put(tx_skb, 6);
586
587 fp = tx_skb->data;
588
589 /* Build frame */
590 fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
591 fp[n++] = ret_code;
592
593 /* Insert list length (MSB first) */
594 tmp_be16 = htons(0x0001);
595 memcpy(fp+n, &tmp_be16, 2); n += 2;
596
597 /* Insert object identifier ( MSB first) */
598 tmp_be16 = cpu_to_be16(obj_id);
599 memcpy(fp+n, &tmp_be16, 2); n += 2;
600
601 switch (value->type) {
602 case IAS_STRING:
603 skb_put(tx_skb, 3 + value->len);
604 fp[n++] = value->type;
605 fp[n++] = 0; /* ASCII */
606 fp[n++] = (__u8) value->len;
607 memcpy(fp+n, value->t.string, value->len); n+=value->len;
608 break;
609 case IAS_INTEGER:
610 skb_put(tx_skb, 5);
611 fp[n++] = value->type;
612
613 tmp_be32 = cpu_to_be32(value->t.integer);
614 memcpy(fp+n, &tmp_be32, 4); n += 4;
615 break;
616 case IAS_OCT_SEQ:
617 skb_put(tx_skb, 3 + value->len);
618 fp[n++] = value->type;
619
620 tmp_be16 = cpu_to_be16(value->len);
621 memcpy(fp+n, &tmp_be16, 2); n += 2;
622 memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
623 break;
624 case IAS_MISSING:
625 IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __func__);
626 skb_put(tx_skb, 1);
627 fp[n++] = value->type;
628 break;
629 default:
630 IRDA_DEBUG(0, "%s(), type not implemented!\n", __func__);
631 break;
632 }
633 iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);
634
635 /* Drop reference count - see state_r_execute(). */
636 dev_kfree_skb(tx_skb);
637 }
638
639 /*
640 * Function iriap_getvaluebyclass_indication (self, skb)
641 *
642 * getvaluebyclass is requested from peer LM-IAS
643 *
644 */
645 static void iriap_getvaluebyclass_indication(struct iriap_cb *self,
646 struct sk_buff *skb)
647 {
648 struct ias_object *obj;
649 struct ias_attrib *attrib;
650 int name_len;
651 int attr_len;
652 char name[IAS_MAX_CLASSNAME + 1]; /* 60 bytes */
653 char attr[IAS_MAX_ATTRIBNAME + 1]; /* 60 bytes */
654 __u8 *fp;
655 int n;
656
657 IRDA_DEBUG(4, "%s()\n", __func__);
658
659 IRDA_ASSERT(self != NULL, return;);
660 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
661 IRDA_ASSERT(skb != NULL, return;);
662
663 fp = skb->data;
664 n = 1;
665
666 name_len = fp[n++];
667
668 IRDA_ASSERT(name_len < IAS_MAX_CLASSNAME + 1, return;);
669
670 memcpy(name, fp+n, name_len); n+=name_len;
671 name[name_len] = '\0';
672
673 attr_len = fp[n++];
674
675 IRDA_ASSERT(attr_len < IAS_MAX_ATTRIBNAME + 1, return;);
676
677 memcpy(attr, fp+n, attr_len); n+=attr_len;
678 attr[attr_len] = '\0';
679
680 IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
681 obj = irias_find_object(name);
682
683 if (obj == NULL) {
684 IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name);
685 iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
686 &irias_missing);
687 return;
688 }
689 IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
690
691 attrib = irias_find_attrib(obj, attr);
692 if (attrib == NULL) {
693 IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr);
694 iriap_getvaluebyclass_response(self, obj->id,
695 IAS_ATTRIB_UNKNOWN,
696 &irias_missing);
697 return;
698 }
699
700 /* We have a match; send the value. */
701 iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
702 attrib->value);
703 }
704
705 /*
706 * Function iriap_send_ack (void)
707 *
708 * Currently not used
709 *
710 */
711 void iriap_send_ack(struct iriap_cb *self)
712 {
713 struct sk_buff *tx_skb;
714 __u8 *frame;
715
716 IRDA_DEBUG(2, "%s()\n", __func__);
717
718 IRDA_ASSERT(self != NULL, return;);
719 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
720
721 tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC);
722 if (!tx_skb)
723 return;
724
725 /* Reserve space for MUX and LAP header */
726 skb_reserve(tx_skb, self->max_header_size);
727 skb_put(tx_skb, 1);
728 frame = tx_skb->data;
729
730 /* Build frame */
731 frame[0] = IAP_LST | IAP_ACK | self->operation;
732
733 irlmp_data_request(self->lsap, tx_skb);
734 }
735
736 void iriap_connect_request(struct iriap_cb *self)
737 {
738 int ret;
739
740 IRDA_ASSERT(self != NULL, return;);
741 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
742
743 ret = irlmp_connect_request(self->lsap, LSAP_IAS,
744 self->saddr, self->daddr,
745 NULL, NULL);
746 if (ret < 0) {
747 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__);
748 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
749 }
750 }
751
752 /*
753 * Function iriap_connect_confirm (handle, skb)
754 *
755 * LSAP connection confirmed!
756 *
757 */
758 static void iriap_connect_confirm(void *instance, void *sap,
759 struct qos_info *qos, __u32 max_seg_size,
760 __u8 max_header_size,
761 struct sk_buff *skb)
762 {
763 struct iriap_cb *self;
764
765 self = instance;
766
767 IRDA_ASSERT(self != NULL, return;);
768 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
769 IRDA_ASSERT(skb != NULL, return;);
770
771 self->max_data_size = max_seg_size;
772 self->max_header_size = max_header_size;
773
774 del_timer(&self->watchdog_timer);
775
776 iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb);
777
778 /* Drop reference count - see state_s_make_call(). */
779 dev_kfree_skb(skb);
780 }
781
782 /*
783 * Function iriap_connect_indication ( handle, skb)
784 *
785 * Remote LM-IAS is requesting connection
786 *
787 */
788 static void iriap_connect_indication(void *instance, void *sap,
789 struct qos_info *qos, __u32 max_seg_size,
790 __u8 max_header_size,
791 struct sk_buff *skb)
792 {
793 struct iriap_cb *self, *new;
794
795 IRDA_DEBUG(1, "%s()\n", __func__);
796
797 self = instance;
798
799 IRDA_ASSERT(skb != NULL, return;);
800 IRDA_ASSERT(self != NULL, goto out;);
801 IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
802
803 /* Start new server */
804 new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
805 if (!new) {
806 IRDA_DEBUG(0, "%s(), open failed\n", __func__);
807 goto out;
808 }
809
810 /* Now attach up the new "socket" */
811 new->lsap = irlmp_dup(self->lsap, new);
812 if (!new->lsap) {
813 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__);
814 goto out;
815 }
816
817 new->max_data_size = max_seg_size;
818 new->max_header_size = max_header_size;
819
820 /* Clean up the original one to keep it in listen state */
821 irlmp_listen(self->lsap);
822
823 iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb);
824
825 out:
826 /* Drop reference count - see state_r_disconnect(). */
827 dev_kfree_skb(skb);
828 }
829
830 /*
831 * Function iriap_data_indication (handle, skb)
832 *
833 * Receives data from connection identified by handle from IrLMP
834 *
835 */
836 static int iriap_data_indication(void *instance, void *sap,
837 struct sk_buff *skb)
838 {
839 struct iriap_cb *self;
840 __u8 *frame;
841 __u8 opcode;
842
843 IRDA_DEBUG(3, "%s()\n", __func__);
844
845 self = instance;
846
847 IRDA_ASSERT(skb != NULL, return 0;);
848 IRDA_ASSERT(self != NULL, goto out;);
849 IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
850
851 frame = skb->data;
852
853 if (self->mode == IAS_SERVER) {
854 /* Call server */
855 IRDA_DEBUG(4, "%s(), Calling server!\n", __func__);
856 iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb);
857 goto out;
858 }
859 opcode = frame[0];
860 if (~opcode & IAP_LST) {
861 net_warn_ratelimited("%s:, IrIAS multiframe commands or results is not implemented yet!\n",
862 __func__);
863 goto out;
864 }
865
866 /* Check for ack frames since they don't contain any data */
867 if (opcode & IAP_ACK) {
868 IRDA_DEBUG(0, "%s() Got ack frame!\n", __func__);
869 goto out;
870 }
871
872 opcode &= ~IAP_LST; /* Mask away LST bit */
873
874 switch (opcode) {
875 case GET_INFO_BASE:
876 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
877 break;
878 case GET_VALUE_BY_CLASS:
879 iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
880
881 switch (frame[1]) {
882 case IAS_SUCCESS:
883 iriap_getvaluebyclass_confirm(self, skb);
884 break;
885 case IAS_CLASS_UNKNOWN:
886 IRDA_DEBUG(1, "%s(), No such class!\n", __func__);
887 /* Finished, close connection! */
888 iriap_disconnect_request(self);
889
890 /*
891 * Warning, the client might close us, so remember
892 * no to use self anymore after calling confirm
893 */
894 if (self->confirm)
895 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
896 self->priv);
897 break;
898 case IAS_ATTRIB_UNKNOWN:
899 IRDA_DEBUG(1, "%s(), No such attribute!\n", __func__);
900 /* Finished, close connection! */
901 iriap_disconnect_request(self);
902
903 /*
904 * Warning, the client might close us, so remember
905 * no to use self anymore after calling confirm
906 */
907 if (self->confirm)
908 self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
909 self->priv);
910 break;
911 }
912 break;
913 default:
914 IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __func__,
915 opcode);
916 break;
917 }
918
919 out:
920 /* Cleanup - sub-calls will have done skb_get() as needed. */
921 dev_kfree_skb(skb);
922 return 0;
923 }
924
925 /*
926 * Function iriap_call_indication (self, skb)
927 *
928 * Received call to server from peer LM-IAS
929 *
930 */
931 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
932 {
933 __u8 *fp;
934 __u8 opcode;
935
936 IRDA_DEBUG(4, "%s()\n", __func__);
937
938 IRDA_ASSERT(self != NULL, return;);
939 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
940 IRDA_ASSERT(skb != NULL, return;);
941
942 fp = skb->data;
943
944 opcode = fp[0];
945 if (~opcode & 0x80) {
946 net_warn_ratelimited("%s: IrIAS multiframe commands or results is not implemented yet!\n",
947 __func__);
948 return;
949 }
950 opcode &= 0x7f; /* Mask away LST bit */
951
952 switch (opcode) {
953 case GET_INFO_BASE:
954 net_warn_ratelimited("%s: GetInfoBaseDetails not implemented yet!\n",
955 __func__);
956 break;
957 case GET_VALUE_BY_CLASS:
958 iriap_getvaluebyclass_indication(self, skb);
959 break;
960 }
961 /* skb will be cleaned up in iriap_data_indication */
962 }
963
964 /*
965 * Function iriap_watchdog_timer_expired (data)
966 *
967 * Query has taken too long time, so abort
968 *
969 */
970 static void iriap_watchdog_timer_expired(void *data)
971 {
972 struct iriap_cb *self = (struct iriap_cb *) data;
973
974 IRDA_ASSERT(self != NULL, return;);
975 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
976
977 /* iriap_close(self); */
978 }
979
980 #ifdef CONFIG_PROC_FS
981
982 static const char *const ias_value_types[] = {
983 "IAS_MISSING",
984 "IAS_INTEGER",
985 "IAS_OCT_SEQ",
986 "IAS_STRING"
987 };
988
989 static inline struct ias_object *irias_seq_idx(loff_t pos)
990 {
991 struct ias_object *obj;
992
993 for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
994 obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
995 if (pos-- == 0)
996 break;
997 }
998
999 return obj;
1000 }
1001
1002 static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
1003 {
1004 spin_lock_irq(&irias_objects->hb_spinlock);
1005
1006 return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
1007 }
1008
1009 static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1010 {
1011 ++*pos;
1012
1013 return (v == SEQ_START_TOKEN)
1014 ? (void *) hashbin_get_first(irias_objects)
1015 : (void *) hashbin_get_next(irias_objects);
1016 }
1017
1018 static void irias_seq_stop(struct seq_file *seq, void *v)
1019 {
1020 spin_unlock_irq(&irias_objects->hb_spinlock);
1021 }
1022
1023 static int irias_seq_show(struct seq_file *seq, void *v)
1024 {
1025 if (v == SEQ_START_TOKEN)
1026 seq_puts(seq, "LM-IAS Objects:\n");
1027 else {
1028 struct ias_object *obj = v;
1029 struct ias_attrib *attrib;
1030
1031 IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
1032
1033 seq_printf(seq, "name: %s, id=%d\n",
1034 obj->name, obj->id);
1035
1036 /* Careful for priority inversions here !
1037 * All other uses of attrib spinlock are independent of
1038 * the object spinlock, so we are safe. Jean II */
1039 spin_lock(&obj->attribs->hb_spinlock);
1040
1041 /* List all attributes for this object */
1042 for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
1043 attrib != NULL;
1044 attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
1045
1046 IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC,
1047 goto outloop; );
1048
1049 seq_printf(seq, " - Attribute name: \"%s\", ",
1050 attrib->name);
1051 seq_printf(seq, "value[%s]: ",
1052 ias_value_types[attrib->value->type]);
1053
1054 switch (attrib->value->type) {
1055 case IAS_INTEGER:
1056 seq_printf(seq, "%d\n",
1057 attrib->value->t.integer);
1058 break;
1059 case IAS_STRING:
1060 seq_printf(seq, "\"%s\"\n",
1061 attrib->value->t.string);
1062 break;
1063 case IAS_OCT_SEQ:
1064 seq_printf(seq, "octet sequence (%d bytes)\n",
1065 attrib->value->len);
1066 break;
1067 case IAS_MISSING:
1068 seq_puts(seq, "missing\n");
1069 break;
1070 default:
1071 seq_printf(seq, "type %d?\n",
1072 attrib->value->type);
1073 }
1074 seq_putc(seq, '\n');
1075
1076 }
1077 IRDA_ASSERT_LABEL(outloop:)
1078 spin_unlock(&obj->attribs->hb_spinlock);
1079 }
1080
1081 return 0;
1082 }
1083
1084 static const struct seq_operations irias_seq_ops = {
1085 .start = irias_seq_start,
1086 .next = irias_seq_next,
1087 .stop = irias_seq_stop,
1088 .show = irias_seq_show,
1089 };
1090
1091 static int irias_seq_open(struct inode *inode, struct file *file)
1092 {
1093 IRDA_ASSERT( irias_objects != NULL, return -EINVAL;);
1094
1095 return seq_open(file, &irias_seq_ops);
1096 }
1097
1098 const struct file_operations irias_seq_fops = {
1099 .owner = THIS_MODULE,
1100 .open = irias_seq_open,
1101 .read = seq_read,
1102 .llseek = seq_lseek,
1103 .release = seq_release,
1104 };
1105
1106 #endif /* PROC_FS */
Linux kernel - Deliverables
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