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ath9k: remove set11n_virtualmorefrag
[wandboard.git] / net / irda / iriap.c
blob36477538cea8eba501f000253b433d673b8d579f
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 /*
91 * Function iriap_init (void)
92 *
93 * Initializes the IrIAP layer, called by the module initialization code
94 * in irmod.c
95 */
96 int __init iriap_init(void)
97 {
98 struct ias_object *obj;
99 struct iriap_cb *server;
100 __u8 oct_seq[6];
101 __u16 hints;
102
103 /* Allocate master array */
104 iriap = hashbin_new(HB_LOCK);
105 if (!iriap)
106 return -ENOMEM;
107
108 /* Object repository - defined in irias_object.c */
109 irias_objects = hashbin_new(HB_LOCK);
110 if (!irias_objects) {
111 IRDA_WARNING("%s: Can't allocate irias_objects hashbin!\n",
112 __func__);
113 hashbin_delete(iriap, NULL);
114 return -ENOMEM;
115 }
116
117 /*
118 * Register some default services for IrLMP
119 */
120 hints = irlmp_service_to_hint(S_COMPUTER);
121 service_handle = irlmp_register_service(hints);
122
123 /* Register the Device object with LM-IAS */
124 obj = irias_new_object("Device", IAS_DEVICE_ID);
125 irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR);
126
127 oct_seq[0] = 0x01; /* Version 1 */
128 oct_seq[1] = 0x00; /* IAS support bits */
129 oct_seq[2] = 0x00; /* LM-MUX support bits */
130 #ifdef CONFIG_IRDA_ULTRA
131 oct_seq[2] |= 0x04; /* Connectionless Data support */
132 #endif
133 irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3,
134 IAS_KERNEL_ATTR);
135 irias_insert_object(obj);
136
137 /*
138 * Register server support with IrLMP so we can accept incoming
139 * connections
140 */
141 server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
142 if (!server) {
143 IRDA_DEBUG(0, "%s(), unable to open server\n", __func__);
144 return -1;
145 }
146 iriap_register_lsap(server, LSAP_IAS, IAS_SERVER);
147
148 return 0;
149 }
150
151 /*
152 * Function iriap_cleanup (void)
153 *
154 * Initializes the IrIAP layer, called by the module cleanup code in
155 * irmod.c
156 */
157 void iriap_cleanup(void)
158 {
159 irlmp_unregister_service(service_handle);
160
161 hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
162 hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object);
163 }
164
165 /*
166 * Function iriap_open (void)
167 *
168 * Opens an instance of the IrIAP layer, and registers with IrLMP
169 */
170 struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv,
171 CONFIRM_CALLBACK callback)
172 {
173 struct iriap_cb *self;
174
175 IRDA_DEBUG(2, "%s()\n", __func__);
176
177 self = kzalloc(sizeof(*self), GFP_ATOMIC);
178 if (!self) {
179 IRDA_WARNING("%s: Unable to kmalloc!\n", __func__);
180 return NULL;
181 }
182
183 /*
184 * Initialize instance
185 */
186
187 self->magic = IAS_MAGIC;
188 self->mode = mode;
189 if (mode == IAS_CLIENT)
190 iriap_register_lsap(self, slsap_sel, mode);
191
192 self->confirm = callback;
193 self->priv = priv;
194
195 /* iriap_getvaluebyclass_request() will construct packets before
196 * we connect, so this must have a sane value... Jean II */
197 self->max_header_size = LMP_MAX_HEADER;
198
199 init_timer(&self->watchdog_timer);
200
201 hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
202
203 /* Initialize state machines */
204 iriap_next_client_state(self, S_DISCONNECT);
205 iriap_next_call_state(self, S_MAKE_CALL);
206 iriap_next_server_state(self, R_DISCONNECT);
207 iriap_next_r_connect_state(self, R_WAITING);
208
209 return self;
210 }
211 EXPORT_SYMBOL(iriap_open);
212
213 /*
214 * Function __iriap_close (self)
215 *
216 * Removes (deallocates) the IrIAP instance
217 *
218 */
219 static void __iriap_close(struct iriap_cb *self)
220 {
221 IRDA_DEBUG(4, "%s()\n", __func__);
222
223 IRDA_ASSERT(self != NULL, return;);
224 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
225
226 del_timer(&self->watchdog_timer);
227
228 if (self->request_skb)
229 dev_kfree_skb(self->request_skb);
230
231 self->magic = 0;
232
233 kfree(self);
234 }
235
236 /*
237 * Function iriap_close (void)
238 *
239 * Closes IrIAP and deregisters with IrLMP
240 */
241 void iriap_close(struct iriap_cb *self)
242 {
243 struct iriap_cb *entry;
244
245 IRDA_DEBUG(2, "%s()\n", __func__);
246
247 IRDA_ASSERT(self != NULL, return;);
248 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
249
250 if (self->lsap) {
251 irlmp_close_lsap(self->lsap);
252 self->lsap = NULL;
253 }
254
255 entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
256 IRDA_ASSERT(entry == self, return;);
257
258 __iriap_close(self);
259 }
260 EXPORT_SYMBOL(iriap_close);
261
262 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
263 {
264 notify_t notify;
265
266 IRDA_DEBUG(2, "%s()\n", __func__);
267
268 irda_notify_init(&notify);
269 notify.connect_confirm = iriap_connect_confirm;
270 notify.connect_indication = iriap_connect_indication;
271 notify.disconnect_indication = iriap_disconnect_indication;
272 notify.data_indication = iriap_data_indication;
273 notify.instance = self;
274 if (mode == IAS_CLIENT)
275 strcpy(notify.name, "IrIAS cli");
276 else
277 strcpy(notify.name, "IrIAS srv");
278
279 self->lsap = irlmp_open_lsap(slsap_sel, &notify, 0);
280 if (self->lsap == NULL) {
281 IRDA_ERROR("%s: Unable to allocated LSAP!\n", __func__);
282 return -1;
283 }
284 self->slsap_sel = self->lsap->slsap_sel;
285
286 return 0;
287 }
288
289 /*
290 * Function iriap_disconnect_indication (handle, reason)
291 *
292 * Got disconnect, so clean up everything associated with this connection
293 *
294 */
295 static void iriap_disconnect_indication(void *instance, void *sap,
296 LM_REASON reason,
297 struct sk_buff *skb)
298 {
299 struct iriap_cb *self;
300
301 IRDA_DEBUG(4, "%s(), reason=%s\n", __func__, irlmp_reasons[reason]);
302
303 self = (struct iriap_cb *) instance;
304
305 IRDA_ASSERT(self != NULL, return;);
306 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
307
308 IRDA_ASSERT(iriap != NULL, return;);
309
310 del_timer(&self->watchdog_timer);
311
312 /* Not needed */
313 if (skb)
314 dev_kfree_skb(skb);
315
316 if (self->mode == IAS_CLIENT) {
317 IRDA_DEBUG(4, "%s(), disconnect as client\n", __func__);
318
319
320 iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
321 NULL);
322 /*
323 * Inform service user that the request failed by sending
324 * it a NULL value. Warning, the client might close us, so
325 * remember no to use self anymore after calling confirm
326 */
327 if (self->confirm)
328 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
329 } else {
330 IRDA_DEBUG(4, "%s(), disconnect as server\n", __func__);
331 iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
332 NULL);
333 iriap_close(self);
334 }
335 }
336
337 /*
338 * Function iriap_disconnect_request (handle)
339 */
340 static void iriap_disconnect_request(struct iriap_cb *self)
341 {
342 struct sk_buff *tx_skb;
343
344 IRDA_DEBUG(4, "%s()\n", __func__);
345
346 IRDA_ASSERT(self != NULL, return;);
347 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
348
349 tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
350 if (tx_skb == NULL) {
351 IRDA_DEBUG(0,
352 "%s(), Could not allocate an sk_buff of length %d\n",
353 __func__, LMP_MAX_HEADER);
354 return;
355 }
356
357 /*
358 * Reserve space for MUX control and LAP header
359 */
360 skb_reserve(tx_skb, LMP_MAX_HEADER);
361
362 irlmp_disconnect_request(self->lsap, tx_skb);
363 }
364
365 /*
366 * Function iriap_getvaluebyclass (addr, name, attr)
367 *
368 * Retrieve all values from attribute in all objects with given class
369 * name
370 */
371 int iriap_getvaluebyclass_request(struct iriap_cb *self,
372 __u32 saddr, __u32 daddr,
373 char *name, char *attr)
374 {
375 struct sk_buff *tx_skb;
376 int name_len, attr_len, skb_len;
377 __u8 *frame;
378
379 IRDA_ASSERT(self != NULL, return -1;);
380 IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;);
381
382 /* Client must supply the destination device address */
383 if (!daddr)
384 return -1;
385
386 self->daddr = daddr;
387 self->saddr = saddr;
388
389 /*
390 * Save operation, so we know what the later indication is about
391 */
392 self->operation = GET_VALUE_BY_CLASS;
393
394 /* Give ourselves 10 secs to finish this operation */
395 iriap_start_watchdog_timer(self, 10*HZ);
396
397 name_len = strlen(name); /* Up to IAS_MAX_CLASSNAME = 60 */
398 attr_len = strlen(attr); /* Up to IAS_MAX_ATTRIBNAME = 60 */
399
400 skb_len = self->max_header_size+2+name_len+1+attr_len+4;
401 tx_skb = alloc_skb(skb_len, GFP_ATOMIC);
402 if (!tx_skb)
403 return -ENOMEM;
404
405 /* Reserve space for MUX and LAP header */
406 skb_reserve(tx_skb, self->max_header_size);
407 skb_put(tx_skb, 3+name_len+attr_len);
408 frame = tx_skb->data;
409
410 /* Build frame */
411 frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
412 frame[1] = name_len; /* Insert length of name */
413 memcpy(frame+2, name, name_len); /* Insert name */
414 frame[2+name_len] = attr_len; /* Insert length of attr */
415 memcpy(frame+3+name_len, attr, attr_len); /* Insert attr */
416
417 iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb);
418
419 /* Drop reference count - see state_s_disconnect(). */
420 dev_kfree_skb(tx_skb);
421
422 return 0;
423 }
424 EXPORT_SYMBOL(iriap_getvaluebyclass_request);
425
426 /*
427 * Function iriap_getvaluebyclass_confirm (self, skb)
428 *
429 * Got result from GetValueByClass command. Parse it and return result
430 * to service user.
431 *
432 */
433 static void iriap_getvaluebyclass_confirm(struct iriap_cb *self,
434 struct sk_buff *skb)
435 {
436 struct ias_value *value;
437 int charset;
438 __u32 value_len;
439 __u32 tmp_cpu32;
440 __u16 obj_id;
441 __u16 len;
442 __u8 type;
443 __u8 *fp;
444 int n;
445
446 IRDA_ASSERT(self != NULL, return;);
447 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
448 IRDA_ASSERT(skb != NULL, return;);
449
450 /* Initialize variables */
451 fp = skb->data;
452 n = 2;
453
454 /* Get length, MSB first */
455 len = get_unaligned_be16(fp + n);
456 n += 2;
457
458 IRDA_DEBUG(4, "%s(), len=%d\n", __func__, len);
459
460 /* Get object ID, MSB first */
461 obj_id = get_unaligned_be16(fp + n);
462 n += 2;
463
464 type = fp[n++];
465 IRDA_DEBUG(4, "%s(), Value type = %d\n", __func__, type);
466
467 switch (type) {
468 case IAS_INTEGER:
469 memcpy(&tmp_cpu32, fp+n, 4); n += 4;
470 be32_to_cpus(&tmp_cpu32);
471 value = irias_new_integer_value(tmp_cpu32);
472
473 /* Legal values restricted to 0x01-0x6f, page 15 irttp */
474 IRDA_DEBUG(4, "%s(), lsap=%d\n", __func__, value->t.integer);
475 break;
476 case IAS_STRING:
477 charset = fp[n++];
478
479 switch (charset) {
480 case CS_ASCII:
481 break;
482 /* case CS_ISO_8859_1: */
483 /* case CS_ISO_8859_2: */
484 /* case CS_ISO_8859_3: */
485 /* case CS_ISO_8859_4: */
486 /* case CS_ISO_8859_5: */
487 /* case CS_ISO_8859_6: */
488 /* case CS_ISO_8859_7: */
489 /* case CS_ISO_8859_8: */
490 /* case CS_ISO_8859_9: */
491 /* case CS_UNICODE: */
492 default:
493 IRDA_DEBUG(0, "%s(), charset %s, not supported\n",
494 __func__, ias_charset_types[charset]);
495
496 /* Aborting, close connection! */
497 iriap_disconnect_request(self);
498 return;
499 /* break; */
500 }
501 value_len = fp[n++];
502 IRDA_DEBUG(4, "%s(), strlen=%d\n", __func__, value_len);
503
504 /* Make sure the string is null-terminated */
505 if (n + value_len < skb->len)
506 fp[n + value_len] = 0x00;
507 IRDA_DEBUG(4, "Got string %s\n", fp+n);
508
509 /* Will truncate to IAS_MAX_STRING bytes */
510 value = irias_new_string_value(fp+n);
511 break;
512 case IAS_OCT_SEQ:
513 value_len = get_unaligned_be16(fp + n);
514 n += 2;
515
516 /* Will truncate to IAS_MAX_OCTET_STRING bytes */
517 value = irias_new_octseq_value(fp+n, value_len);
518 break;
519 default:
520 value = irias_new_missing_value();
521 break;
522 }
523
524 /* Finished, close connection! */
525 iriap_disconnect_request(self);
526
527 /* Warning, the client might close us, so remember no to use self
528 * anymore after calling confirm
529 */
530 if (self->confirm)
531 self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
532 else {
533 IRDA_DEBUG(0, "%s(), missing handler!\n", __func__);
534 irias_delete_value(value);
535 }
536 }
537
538 /*
539 * Function iriap_getvaluebyclass_response ()
540 *
541 * Send answer back to remote LM-IAS
542 *
543 */
544 static void iriap_getvaluebyclass_response(struct iriap_cb *self,
545 __u16 obj_id,
546 __u8 ret_code,
547 struct ias_value *value)
548 {
549 struct sk_buff *tx_skb;
550 int n;
551 __be32 tmp_be32;
552 __be16 tmp_be16;
553 __u8 *fp;
554
555 IRDA_DEBUG(4, "%s()\n", __func__);
556
557 IRDA_ASSERT(self != NULL, return;);
558 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
559 IRDA_ASSERT(value != NULL, return;);
560 IRDA_ASSERT(value->len <= 1024, return;);
561
562 /* Initialize variables */
563 n = 0;
564
565 /*
566 * We must adjust the size of the response after the length of the
567 * value. We add 32 bytes because of the 6 bytes for the frame and
568 * max 5 bytes for the value coding.
569 */
570 tx_skb = alloc_skb(value->len + self->max_header_size + 32,
571 GFP_ATOMIC);
572 if (!tx_skb)
573 return;
574
575 /* Reserve space for MUX and LAP header */
576 skb_reserve(tx_skb, self->max_header_size);
577 skb_put(tx_skb, 6);
578
579 fp = tx_skb->data;
580
581 /* Build frame */
582 fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
583 fp[n++] = ret_code;
584
585 /* Insert list length (MSB first) */
586 tmp_be16 = htons(0x0001);
587 memcpy(fp+n, &tmp_be16, 2); n += 2;
588
589 /* Insert object identifier ( MSB first) */
590 tmp_be16 = cpu_to_be16(obj_id);
591 memcpy(fp+n, &tmp_be16, 2); n += 2;
592
593 switch (value->type) {
594 case IAS_STRING:
595 skb_put(tx_skb, 3 + value->len);
596 fp[n++] = value->type;
597 fp[n++] = 0; /* ASCII */
598 fp[n++] = (__u8) value->len;
599 memcpy(fp+n, value->t.string, value->len); n+=value->len;
600 break;
601 case IAS_INTEGER:
602 skb_put(tx_skb, 5);
603 fp[n++] = value->type;
604
605 tmp_be32 = cpu_to_be32(value->t.integer);
606 memcpy(fp+n, &tmp_be32, 4); n += 4;
607 break;
608 case IAS_OCT_SEQ:
609 skb_put(tx_skb, 3 + value->len);
610 fp[n++] = value->type;
611
612 tmp_be16 = cpu_to_be16(value->len);
613 memcpy(fp+n, &tmp_be16, 2); n += 2;
614 memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
615 break;
616 case IAS_MISSING:
617 IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __func__);
618 skb_put(tx_skb, 1);
619 fp[n++] = value->type;
620 break;
621 default:
622 IRDA_DEBUG(0, "%s(), type not implemented!\n", __func__);
623 break;
624 }
625 iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);
626
627 /* Drop reference count - see state_r_execute(). */
628 dev_kfree_skb(tx_skb);
629 }
630
631 /*
632 * Function iriap_getvaluebyclass_indication (self, skb)
633 *
634 * getvaluebyclass is requested from peer LM-IAS
635 *
636 */
637 static void iriap_getvaluebyclass_indication(struct iriap_cb *self,
638 struct sk_buff *skb)
639 {
640 struct ias_object *obj;
641 struct ias_attrib *attrib;
642 int name_len;
643 int attr_len;
644 char name[IAS_MAX_CLASSNAME + 1]; /* 60 bytes */
645 char attr[IAS_MAX_ATTRIBNAME + 1]; /* 60 bytes */
646 __u8 *fp;
647 int n;
648
649 IRDA_DEBUG(4, "%s()\n", __func__);
650
651 IRDA_ASSERT(self != NULL, return;);
652 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
653 IRDA_ASSERT(skb != NULL, return;);
654
655 fp = skb->data;
656 n = 1;
657
658 name_len = fp[n++];
659
660 IRDA_ASSERT(name_len < IAS_MAX_CLASSNAME + 1, return;);
661
662 memcpy(name, fp+n, name_len); n+=name_len;
663 name[name_len] = '\0';
664
665 attr_len = fp[n++];
666
667 IRDA_ASSERT(attr_len < IAS_MAX_ATTRIBNAME + 1, return;);
668
669 memcpy(attr, fp+n, attr_len); n+=attr_len;
670 attr[attr_len] = '\0';
671
672 IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
673 obj = irias_find_object(name);
674
675 if (obj == NULL) {
676 IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name);
677 iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
678 &irias_missing);
679 return;
680 }
681 IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
682
683 attrib = irias_find_attrib(obj, attr);
684 if (attrib == NULL) {
685 IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr);
686 iriap_getvaluebyclass_response(self, obj->id,
687 IAS_ATTRIB_UNKNOWN,
688 &irias_missing);
689 return;
690 }
691
692 /* We have a match; send the value. */
693 iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
694 attrib->value);
695 }
696
697 /*
698 * Function iriap_send_ack (void)
699 *
700 * Currently not used
701 *
702 */
703 void iriap_send_ack(struct iriap_cb *self)
704 {
705 struct sk_buff *tx_skb;
706 __u8 *frame;
707
708 IRDA_DEBUG(2, "%s()\n", __func__);
709
710 IRDA_ASSERT(self != NULL, return;);
711 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
712
713 tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC);
714 if (!tx_skb)
715 return;
716
717 /* Reserve space for MUX and LAP header */
718 skb_reserve(tx_skb, self->max_header_size);
719 skb_put(tx_skb, 1);
720 frame = tx_skb->data;
721
722 /* Build frame */
723 frame[0] = IAP_LST | IAP_ACK | self->operation;
724
725 irlmp_data_request(self->lsap, tx_skb);
726 }
727
728 void iriap_connect_request(struct iriap_cb *self)
729 {
730 int ret;
731
732 IRDA_ASSERT(self != NULL, return;);
733 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
734
735 ret = irlmp_connect_request(self->lsap, LSAP_IAS,
736 self->saddr, self->daddr,
737 NULL, NULL);
738 if (ret < 0) {
739 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__);
740 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
741 }
742 }
743
744 /*
745 * Function iriap_connect_confirm (handle, skb)
746 *
747 * LSAP connection confirmed!
748 *
749 */
750 static void iriap_connect_confirm(void *instance, void *sap,
751 struct qos_info *qos, __u32 max_seg_size,
752 __u8 max_header_size,
753 struct sk_buff *skb)
754 {
755 struct iriap_cb *self;
756
757 self = (struct iriap_cb *) instance;
758
759 IRDA_ASSERT(self != NULL, return;);
760 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
761 IRDA_ASSERT(skb != NULL, return;);
762
763 self->max_data_size = max_seg_size;
764 self->max_header_size = max_header_size;
765
766 del_timer(&self->watchdog_timer);
767
768 iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb);
769
770 /* Drop reference count - see state_s_make_call(). */
771 dev_kfree_skb(skb);
772 }
773
774 /*
775 * Function iriap_connect_indication ( handle, skb)
776 *
777 * Remote LM-IAS is requesting connection
778 *
779 */
780 static void iriap_connect_indication(void *instance, void *sap,
781 struct qos_info *qos, __u32 max_seg_size,
782 __u8 max_header_size,
783 struct sk_buff *skb)
784 {
785 struct iriap_cb *self, *new;
786
787 IRDA_DEBUG(1, "%s()\n", __func__);
788
789 self = (struct iriap_cb *) instance;
790
791 IRDA_ASSERT(skb != NULL, return;);
792 IRDA_ASSERT(self != NULL, goto out;);
793 IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
794
795 /* Start new server */
796 new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
797 if (!new) {
798 IRDA_DEBUG(0, "%s(), open failed\n", __func__);
799 goto out;
800 }
801
802 /* Now attach up the new "socket" */
803 new->lsap = irlmp_dup(self->lsap, new);
804 if (!new->lsap) {
805 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__);
806 goto out;
807 }
808
809 new->max_data_size = max_seg_size;
810 new->max_header_size = max_header_size;
811
812 /* Clean up the original one to keep it in listen state */
813 irlmp_listen(self->lsap);
814
815 iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb);
816
817 out:
818 /* Drop reference count - see state_r_disconnect(). */
819 dev_kfree_skb(skb);
820 }
821
822 /*
823 * Function iriap_data_indication (handle, skb)
824 *
825 * Receives data from connection identified by handle from IrLMP
826 *
827 */
828 static int iriap_data_indication(void *instance, void *sap,
829 struct sk_buff *skb)
830 {
831 struct iriap_cb *self;
832 __u8 *frame;
833 __u8 opcode;
834
835 IRDA_DEBUG(3, "%s()\n", __func__);
836
837 self = (struct iriap_cb *) instance;
838
839 IRDA_ASSERT(skb != NULL, return 0;);
840 IRDA_ASSERT(self != NULL, goto out;);
841 IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
842
843 frame = skb->data;
844
845 if (self->mode == IAS_SERVER) {
846 /* Call server */
847 IRDA_DEBUG(4, "%s(), Calling server!\n", __func__);
848 iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb);
849 goto out;
850 }
851 opcode = frame[0];
852 if (~opcode & IAP_LST) {
853 IRDA_WARNING("%s:, IrIAS multiframe commands or "
854 "results is not implemented yet!\n",
855 __func__);
856 goto out;
857 }
858
859 /* Check for ack frames since they don't contain any data */
860 if (opcode & IAP_ACK) {
861 IRDA_DEBUG(0, "%s() Got ack frame!\n", __func__);
862 goto out;
863 }
864
865 opcode &= ~IAP_LST; /* Mask away LST bit */
866
867 switch (opcode) {
868 case GET_INFO_BASE:
869 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
870 break;
871 case GET_VALUE_BY_CLASS:
872 iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
873
874 switch (frame[1]) {
875 case IAS_SUCCESS:
876 iriap_getvaluebyclass_confirm(self, skb);
877 break;
878 case IAS_CLASS_UNKNOWN:
879 IRDA_DEBUG(1, "%s(), No such class!\n", __func__);
880 /* Finished, close connection! */
881 iriap_disconnect_request(self);
882
883 /*
884 * Warning, the client might close us, so remember
885 * no to use self anymore after calling confirm
886 */
887 if (self->confirm)
888 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
889 self->priv);
890 break;
891 case IAS_ATTRIB_UNKNOWN:
892 IRDA_DEBUG(1, "%s(), No such attribute!\n", __func__);
893 /* Finished, close connection! */
894 iriap_disconnect_request(self);
895
896 /*
897 * Warning, the client might close us, so remember
898 * no to use self anymore after calling confirm
899 */
900 if (self->confirm)
901 self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
902 self->priv);
903 break;
904 }
905 break;
906 default:
907 IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __func__,
908 opcode);
909 break;
910 }
911
912 out:
913 /* Cleanup - sub-calls will have done skb_get() as needed. */
914 dev_kfree_skb(skb);
915 return 0;
916 }
917
918 /*
919 * Function iriap_call_indication (self, skb)
920 *
921 * Received call to server from peer LM-IAS
922 *
923 */
924 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
925 {
926 __u8 *fp;
927 __u8 opcode;
928
929 IRDA_DEBUG(4, "%s()\n", __func__);
930
931 IRDA_ASSERT(self != NULL, return;);
932 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
933 IRDA_ASSERT(skb != NULL, return;);
934
935 fp = skb->data;
936
937 opcode = fp[0];
938 if (~opcode & 0x80) {
939 IRDA_WARNING("%s: IrIAS multiframe commands or results "
940 "is not implemented yet!\n", __func__);
941 return;
942 }
943 opcode &= 0x7f; /* Mask away LST bit */
944
945 switch (opcode) {
946 case GET_INFO_BASE:
947 IRDA_WARNING("%s: GetInfoBaseDetails not implemented yet!\n",
948 __func__);
949 break;
950 case GET_VALUE_BY_CLASS:
951 iriap_getvaluebyclass_indication(self, skb);
952 break;
953 }
954 /* skb will be cleaned up in iriap_data_indication */
955 }
956
957 /*
958 * Function iriap_watchdog_timer_expired (data)
959 *
960 * Query has taken too long time, so abort
961 *
962 */
963 static void iriap_watchdog_timer_expired(void *data)
964 {
965 struct iriap_cb *self = (struct iriap_cb *) data;
966
967 IRDA_ASSERT(self != NULL, return;);
968 IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
969
970 /* iriap_close(self); */
971 }
972
973 #ifdef CONFIG_PROC_FS
974
975 static const char *const ias_value_types[] = {
976 "IAS_MISSING",
977 "IAS_INTEGER",
978 "IAS_OCT_SEQ",
979 "IAS_STRING"
980 };
981
982 static inline struct ias_object *irias_seq_idx(loff_t pos)
983 {
984 struct ias_object *obj;
985
986 for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
987 obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
988 if (pos-- == 0)
989 break;
990 }
991
992 return obj;
993 }
994
995 static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
996 {
997 spin_lock_irq(&irias_objects->hb_spinlock);
998
999 return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
1000 }
1001
1002 static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1003 {
1004 ++*pos;
1005
1006 return (v == SEQ_START_TOKEN)
1007 ? (void *) hashbin_get_first(irias_objects)
1008 : (void *) hashbin_get_next(irias_objects);
1009 }
1010
1011 static void irias_seq_stop(struct seq_file *seq, void *v)
1012 {
1013 spin_unlock_irq(&irias_objects->hb_spinlock);
1014 }
1015
1016 static int irias_seq_show(struct seq_file *seq, void *v)
1017 {
1018 if (v == SEQ_START_TOKEN)
1019 seq_puts(seq, "LM-IAS Objects:\n");
1020 else {
1021 struct ias_object *obj = v;
1022 struct ias_attrib *attrib;
1023
1024 IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
1025
1026 seq_printf(seq, "name: %s, id=%d\n",
1027 obj->name, obj->id);
1028
1029 /* Careful for priority inversions here !
1030 * All other uses of attrib spinlock are independent of
1031 * the object spinlock, so we are safe. Jean II */
1032 spin_lock(&obj->attribs->hb_spinlock);
1033
1034 /* List all attributes for this object */
1035 for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
1036 attrib != NULL;
1037 attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
1038
1039 IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC,
1040 goto outloop; );
1041
1042 seq_printf(seq, " - Attribute name: \"%s\", ",
1043 attrib->name);
1044 seq_printf(seq, "value[%s]: ",
1045 ias_value_types[attrib->value->type]);
1046
1047 switch (attrib->value->type) {
1048 case IAS_INTEGER:
1049 seq_printf(seq, "%d\n",
1050 attrib->value->t.integer);
1051 break;
1052 case IAS_STRING:
1053 seq_printf(seq, "\"%s\"\n",
1054 attrib->value->t.string);
1055 break;
1056 case IAS_OCT_SEQ:
1057 seq_printf(seq, "octet sequence (%d bytes)\n",
1058 attrib->value->len);
1059 break;
1060 case IAS_MISSING:
1061 seq_puts(seq, "missing\n");
1062 break;
1063 default:
1064 seq_printf(seq, "type %d?\n",
1065 attrib->value->type);
1066 }
1067 seq_putc(seq, '\n');
1068
1069 }
1070 IRDA_ASSERT_LABEL(outloop:)
1071 spin_unlock(&obj->attribs->hb_spinlock);
1072 }
1073
1074 return 0;
1075 }
1076
1077 static const struct seq_operations irias_seq_ops = {
1078 .start = irias_seq_start,
1079 .next = irias_seq_next,
1080 .stop = irias_seq_stop,
1081 .show = irias_seq_show,
1082 };
1083
1084 static int irias_seq_open(struct inode *inode, struct file *file)
1085 {
1086 IRDA_ASSERT( irias_objects != NULL, return -EINVAL;);
1087
1088 return seq_open(file, &irias_seq_ops);
1089 }
1090
1091 const struct file_operations irias_seq_fops = {
1092 .owner = THIS_MODULE,
1093 .open = irias_seq_open,
1094 .read = seq_read,
1095 .llseek = seq_lseek,
1096 .release = seq_release,
1097 };
1098
1099 #endif /* PROC_FS */
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