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ARM: 7709/1: mcpm: Add explicit AFLAGS to support v6/v7 multiplatform kernels
[GitHub/mt8127/android_kernel_alcatel_ttab.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 IRDA_WARNING("%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 IRDA_WARNING("%s: Unable to kmalloc!\n", __func__);
185 return NULL;
186 }
187
188 /*
189 * Initialize instance
190 */
191
192 self->magic = IAS_MAGIC;
193 self->mode = mode;
194 if (mode == IAS_CLIENT)
195 iriap_register_lsap(self, slsap_sel, mode);
196
197 self->confirm = callback;
198 self->priv = priv;
199
200 /* iriap_getvaluebyclass_request() will construct packets before
201 * we connect, so this must have a sane value... Jean II */
202 self->max_header_size = LMP_MAX_HEADER;
203
204 init_timer(&self->watchdog_timer);
205
206 hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
207
208 /* Initialize state machines */
209 iriap_next_client_state(self, S_DISCONNECT);
210 iriap_next_call_state(self, S_MAKE_CALL);
211 iriap_next_server_state(self, R_DISCONNECT);
212 iriap_next_r_connect_state(self, R_WAITING);
213
214 return self;
215 }
216 EXPORT_SYMBOL(iriap_open);
217
218 /*
219 * Function __iriap_close (self)
220 *
221 * Removes (deallocates) the IrIAP instance
222 *
223 */
224 static void __iriap_close(struct iriap_cb *self)
225 {
226 IRDA_DEBUG(4, "%s()\n", __func__);
227
228 IRDA_ASSERT(self != NULL, return;);
229 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
230
231 del_timer(&self->watchdog_timer);
232
233 if (self->request_skb)
234 dev_kfree_skb(self->request_skb);
235
236 self->magic = 0;
237
238 kfree(self);
239 }
240
241 /*
242 * Function iriap_close (void)
243 *
244 * Closes IrIAP and deregisters with IrLMP
245 */
246 void iriap_close(struct iriap_cb *self)
247 {
248 struct iriap_cb *entry;
249
250 IRDA_DEBUG(2, "%s()\n", __func__);
251
252 IRDA_ASSERT(self != NULL, return;);
253 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
254
255 if (self->lsap) {
256 irlmp_close_lsap(self->lsap);
257 self->lsap = NULL;
258 }
259
260 entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
261 IRDA_ASSERT(entry == self, return;);
262
263 __iriap_close(self);
264 }
265 EXPORT_SYMBOL(iriap_close);
266
267 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
268 {
269 notify_t notify;
270
271 IRDA_DEBUG(2, "%s()\n", __func__);
272
273 irda_notify_init(&notify);
274 notify.connect_confirm = iriap_connect_confirm;
275 notify.connect_indication = iriap_connect_indication;
276 notify.disconnect_indication = iriap_disconnect_indication;
277 notify.data_indication = iriap_data_indication;
278 notify.instance = self;
279 if (mode == IAS_CLIENT)
280 strcpy(notify.name, "IrIAS cli");
281 else
282 strcpy(notify.name, "IrIAS srv");
283
284 self->lsap = irlmp_open_lsap(slsap_sel, &notify, 0);
285 if (self->lsap == NULL) {
286 IRDA_ERROR("%s: Unable to allocated LSAP!\n", __func__);
287 return -1;
288 }
289 self->slsap_sel = self->lsap->slsap_sel;
290
291 return 0;
292 }
293
294 /*
295 * Function iriap_disconnect_indication (handle, reason)
296 *
297 * Got disconnect, so clean up everything associated with this connection
298 *
299 */
300 static void iriap_disconnect_indication(void *instance, void *sap,
301 LM_REASON reason,
302 struct sk_buff *skb)
303 {
304 struct iriap_cb *self;
305
306 IRDA_DEBUG(4, "%s(), reason=%s\n", __func__, irlmp_reasons[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 IRDA_WARNING("%s:, IrIAS multiframe commands or "
862 "results is not implemented yet!\n",
863 __func__);
864 goto out;
865 }
866
867 /* Check for ack frames since they don't contain any data */
868 if (opcode & IAP_ACK) {
869 IRDA_DEBUG(0, "%s() Got ack frame!\n", __func__);
870 goto out;
871 }
872
873 opcode &= ~IAP_LST; /* Mask away LST bit */
874
875 switch (opcode) {
876 case GET_INFO_BASE:
877 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
878 break;
879 case GET_VALUE_BY_CLASS:
880 iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
881
882 switch (frame[1]) {
883 case IAS_SUCCESS:
884 iriap_getvaluebyclass_confirm(self, skb);
885 break;
886 case IAS_CLASS_UNKNOWN:
887 IRDA_DEBUG(1, "%s(), No such class!\n", __func__);
888 /* Finished, close connection! */
889 iriap_disconnect_request(self);
890
891 /*
892 * Warning, the client might close us, so remember
893 * no to use self anymore after calling confirm
894 */
895 if (self->confirm)
896 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
897 self->priv);
898 break;
899 case IAS_ATTRIB_UNKNOWN:
900 IRDA_DEBUG(1, "%s(), No such attribute!\n", __func__);
901 /* Finished, close connection! */
902 iriap_disconnect_request(self);
903
904 /*
905 * Warning, the client might close us, so remember
906 * no to use self anymore after calling confirm
907 */
908 if (self->confirm)
909 self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
910 self->priv);
911 break;
912 }
913 break;
914 default:
915 IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __func__,
916 opcode);
917 break;
918 }
919
920 out:
921 /* Cleanup - sub-calls will have done skb_get() as needed. */
922 dev_kfree_skb(skb);
923 return 0;
924 }
925
926 /*
927 * Function iriap_call_indication (self, skb)
928 *
929 * Received call to server from peer LM-IAS
930 *
931 */
932 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
933 {
934 __u8 *fp;
935 __u8 opcode;
936
937 IRDA_DEBUG(4, "%s()\n", __func__);
938
939 IRDA_ASSERT(self != NULL, return;);
940 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
941 IRDA_ASSERT(skb != NULL, return;);
942
943 fp = skb->data;
944
945 opcode = fp[0];
946 if (~opcode & 0x80) {
947 IRDA_WARNING("%s: IrIAS multiframe commands or results "
948 "is not implemented yet!\n", __func__);
949 return;
950 }
951 opcode &= 0x7f; /* Mask away LST bit */
952
953 switch (opcode) {
954 case GET_INFO_BASE:
955 IRDA_WARNING("%s: GetInfoBaseDetails not implemented yet!\n",
956 __func__);
957 break;
958 case GET_VALUE_BY_CLASS:
959 iriap_getvaluebyclass_indication(self, skb);
960 break;
961 }
962 /* skb will be cleaned up in iriap_data_indication */
963 }
964
965 /*
966 * Function iriap_watchdog_timer_expired (data)
967 *
968 * Query has taken too long time, so abort
969 *
970 */
971 static void iriap_watchdog_timer_expired(void *data)
972 {
973 struct iriap_cb *self = (struct iriap_cb *) data;
974
975 IRDA_ASSERT(self != NULL, return;);
976 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
977
978 /* iriap_close(self); */
979 }
980
981 #ifdef CONFIG_PROC_FS
982
983 static const char *const ias_value_types[] = {
984 "IAS_MISSING",
985 "IAS_INTEGER",
986 "IAS_OCT_SEQ",
987 "IAS_STRING"
988 };
989
990 static inline struct ias_object *irias_seq_idx(loff_t pos)
991 {
992 struct ias_object *obj;
993
994 for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
995 obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
996 if (pos-- == 0)
997 break;
998 }
999
1000 return obj;
1001 }
1002
1003 static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
1004 {
1005 spin_lock_irq(&irias_objects->hb_spinlock);
1006
1007 return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
1008 }
1009
1010 static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1011 {
1012 ++*pos;
1013
1014 return (v == SEQ_START_TOKEN)
1015 ? (void *) hashbin_get_first(irias_objects)
1016 : (void *) hashbin_get_next(irias_objects);
1017 }
1018
1019 static void irias_seq_stop(struct seq_file *seq, void *v)
1020 {
1021 spin_unlock_irq(&irias_objects->hb_spinlock);
1022 }
1023
1024 static int irias_seq_show(struct seq_file *seq, void *v)
1025 {
1026 if (v == SEQ_START_TOKEN)
1027 seq_puts(seq, "LM-IAS Objects:\n");
1028 else {
1029 struct ias_object *obj = v;
1030 struct ias_attrib *attrib;
1031
1032 IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
1033
1034 seq_printf(seq, "name: %s, id=%d\n",
1035 obj->name, obj->id);
1036
1037 /* Careful for priority inversions here !
1038 * All other uses of attrib spinlock are independent of
1039 * the object spinlock, so we are safe. Jean II */
1040 spin_lock(&obj->attribs->hb_spinlock);
1041
1042 /* List all attributes for this object */
1043 for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
1044 attrib != NULL;
1045 attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
1046
1047 IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC,
1048 goto outloop; );
1049
1050 seq_printf(seq, " - Attribute name: \"%s\", ",
1051 attrib->name);
1052 seq_printf(seq, "value[%s]: ",
1053 ias_value_types[attrib->value->type]);
1054
1055 switch (attrib->value->type) {
1056 case IAS_INTEGER:
1057 seq_printf(seq, "%d\n",
1058 attrib->value->t.integer);
1059 break;
1060 case IAS_STRING:
1061 seq_printf(seq, "\"%s\"\n",
1062 attrib->value->t.string);
1063 break;
1064 case IAS_OCT_SEQ:
1065 seq_printf(seq, "octet sequence (%d bytes)\n",
1066 attrib->value->len);
1067 break;
1068 case IAS_MISSING:
1069 seq_puts(seq, "missing\n");
1070 break;
1071 default:
1072 seq_printf(seq, "type %d?\n",
1073 attrib->value->type);
1074 }
1075 seq_putc(seq, '\n');
1076
1077 }
1078 IRDA_ASSERT_LABEL(outloop:)
1079 spin_unlock(&obj->attribs->hb_spinlock);
1080 }
1081
1082 return 0;
1083 }
1084
1085 static const struct seq_operations irias_seq_ops = {
1086 .start = irias_seq_start,
1087 .next = irias_seq_next,
1088 .stop = irias_seq_stop,
1089 .show = irias_seq_show,
1090 };
1091
1092 static int irias_seq_open(struct inode *inode, struct file *file)
1093 {
1094 IRDA_ASSERT( irias_objects != NULL, return -EINVAL;);
1095
1096 return seq_open(file, &irias_seq_ops);
1097 }
1098
1099 const struct file_operations irias_seq_fops = {
1100 .owner = THIS_MODULE,
1101 .open = irias_seq_open,
1102 .read = seq_read,
1103 .llseek = seq_lseek,
1104 .release = seq_release,
1105 };
1106
1107 #endif /* PROC_FS */
kernel source for telekom puls (alcatel/mediatek)