774eb707940c5929010254cd092fedb87e519548
[linux-2.6.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
35 #include <asm/byteorder.h>
36 #include <asm/unaligned.h>
37
38 #include <net/irda/irda.h>
39 #include <net/irda/irttp.h>
40 #include <net/irda/irlmp.h>
41 #include <net/irda/irias_object.h>
42 #include <net/irda/iriap_event.h>
43 #include <net/irda/iriap.h>
44
45 #ifdef CONFIG_IRDA_DEBUG
46 /* FIXME: This one should go in irlmp.c */
47 static const char *ias_charset_types[] = {
48         "CS_ASCII",
49         "CS_ISO_8859_1",
50         "CS_ISO_8859_2",
51         "CS_ISO_8859_3",
52         "CS_ISO_8859_4",
53         "CS_ISO_8859_5",
54         "CS_ISO_8859_6",
55         "CS_ISO_8859_7",
56         "CS_ISO_8859_8",
57         "CS_ISO_8859_9",
58         "CS_UNICODE"
59 };
60 #endif  /* CONFIG_IRDA_DEBUG */
61
62 static hashbin_t *iriap = NULL;
63 static void *service_handle;
64
65 static void __iriap_close(struct iriap_cb *self);
66 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode);
67 static void iriap_disconnect_indication(void *instance, void *sap,
68                                         LM_REASON reason, struct sk_buff *skb);
69 static void iriap_connect_indication(void *instance, void *sap,
70                                      struct qos_info *qos, __u32 max_sdu_size,
71                                      __u8 max_header_size,
72                                      struct sk_buff *skb);
73 static void iriap_connect_confirm(void *instance, void *sap,
74                                   struct qos_info *qos,
75                                   __u32 max_sdu_size, __u8 max_header_size,
76                                   struct sk_buff *skb);
77 static int iriap_data_indication(void *instance, void *sap,
78                                  struct sk_buff *skb);
79
80 static void iriap_watchdog_timer_expired(void *data);
81
82 static inline void iriap_start_watchdog_timer(struct iriap_cb *self,
83                                               int timeout)
84 {
85         irda_start_timer(&self->watchdog_timer, timeout, self,
86                          iriap_watchdog_timer_expired);
87 }
88
89 /*
90  * Function iriap_init (void)
91  *
92  *    Initializes the IrIAP layer, called by the module initialization code
93  *    in irmod.c
94  */
95 int __init iriap_init(void)
96 {
97         struct ias_object *obj;
98         struct iriap_cb *server;
99         __u8 oct_seq[6];
100         __u16 hints;
101
102         /* Allocate master array */
103         iriap = hashbin_new(HB_LOCK);
104         if (!iriap)
105                 return -ENOMEM;
106
107         /* Object repository - defined in irias_object.c */
108         irias_objects = hashbin_new(HB_LOCK);
109         if (!irias_objects) {
110                 IRDA_WARNING("%s: Can't allocate irias_objects hashbin!\n",
111                              __FUNCTION__);
112                 hashbin_delete(iriap, NULL);
113                 return -ENOMEM;
114         }
115
116         /*
117          *  Register some default services for IrLMP
118          */
119         hints  = irlmp_service_to_hint(S_COMPUTER);
120         service_handle = irlmp_register_service(hints);
121
122         /* Register the Device object with LM-IAS */
123         obj = irias_new_object("Device", IAS_DEVICE_ID);
124         irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR);
125
126         oct_seq[0] = 0x01;  /* Version 1 */
127         oct_seq[1] = 0x00;  /* IAS support bits */
128         oct_seq[2] = 0x00;  /* LM-MUX support bits */
129 #ifdef CONFIG_IRDA_ULTRA
130         oct_seq[2] |= 0x04; /* Connectionless Data support */
131 #endif
132         irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3,
133                                 IAS_KERNEL_ATTR);
134         irias_insert_object(obj);
135
136         /*
137          *  Register server support with IrLMP so we can accept incoming
138          *  connections
139          */
140         server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
141         if (!server) {
142                 IRDA_DEBUG(0, "%s(), unable to open server\n", __FUNCTION__);
143                 return -1;
144         }
145         iriap_register_lsap(server, LSAP_IAS, IAS_SERVER);
146
147         return 0;
148 }
149
150 /*
151  * Function iriap_cleanup (void)
152  *
153  *    Initializes the IrIAP layer, called by the module cleanup code in
154  *    irmod.c
155  */
156 void __exit iriap_cleanup(void)
157 {
158         irlmp_unregister_service(service_handle);
159
160         hashbin_delete(iriap, (FREE_FUNC) __iriap_close);
161         hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object);
162 }
163
164 /*
165  * Function iriap_open (void)
166  *
167  *    Opens an instance of the IrIAP layer, and registers with IrLMP
168  */
169 struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv,
170                             CONFIRM_CALLBACK callback)
171 {
172         struct iriap_cb *self;
173
174         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
175
176         self = kzalloc(sizeof(*self), GFP_ATOMIC);
177         if (!self) {
178                 IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__);
179                 return NULL;
180         }
181
182         /*
183          *  Initialize instance
184          */
185
186         self->magic = IAS_MAGIC;
187         self->mode = mode;
188         if (mode == IAS_CLIENT)
189                 iriap_register_lsap(self, slsap_sel, mode);
190
191         self->confirm = callback;
192         self->priv = priv;
193
194         /* iriap_getvaluebyclass_request() will construct packets before
195          * we connect, so this must have a sane value... Jean II */
196         self->max_header_size = LMP_MAX_HEADER;
197
198         init_timer(&self->watchdog_timer);
199
200         hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL);
201
202         /* Initialize state machines */
203         iriap_next_client_state(self, S_DISCONNECT);
204         iriap_next_call_state(self, S_MAKE_CALL);
205         iriap_next_server_state(self, R_DISCONNECT);
206         iriap_next_r_connect_state(self, R_WAITING);
207
208         return self;
209 }
210 EXPORT_SYMBOL(iriap_open);
211
212 /*
213  * Function __iriap_close (self)
214  *
215  *    Removes (deallocates) the IrIAP instance
216  *
217  */
218 static void __iriap_close(struct iriap_cb *self)
219 {
220         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
221
222         IRDA_ASSERT(self != NULL, return;);
223         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
224
225         del_timer(&self->watchdog_timer);
226
227         if (self->request_skb)
228                 dev_kfree_skb(self->request_skb);
229
230         self->magic = 0;
231
232         kfree(self);
233 }
234
235 /*
236  * Function iriap_close (void)
237  *
238  *    Closes IrIAP and deregisters with IrLMP
239  */
240 void iriap_close(struct iriap_cb *self)
241 {
242         struct iriap_cb *entry;
243
244         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
245
246         IRDA_ASSERT(self != NULL, return;);
247         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
248
249         if (self->lsap) {
250                 irlmp_close_lsap(self->lsap);
251                 self->lsap = NULL;
252         }
253
254         entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL);
255         IRDA_ASSERT(entry == self, return;);
256
257         __iriap_close(self);
258 }
259 EXPORT_SYMBOL(iriap_close);
260
261 static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode)
262 {
263         notify_t notify;
264
265         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
266
267         irda_notify_init(&notify);
268         notify.connect_confirm       = iriap_connect_confirm;
269         notify.connect_indication    = iriap_connect_indication;
270         notify.disconnect_indication = iriap_disconnect_indication;
271         notify.data_indication       = iriap_data_indication;
272         notify.instance = self;
273         if (mode == IAS_CLIENT)
274                 strcpy(notify.name, "IrIAS cli");
275         else
276                 strcpy(notify.name, "IrIAS srv");
277
278         self->lsap = irlmp_open_lsap(slsap_sel, &notify, 0);
279         if (self->lsap == NULL) {
280                 IRDA_ERROR("%s: Unable to allocated LSAP!\n", __FUNCTION__);
281                 return -1;
282         }
283         self->slsap_sel = self->lsap->slsap_sel;
284
285         return 0;
286 }
287
288 /*
289  * Function iriap_disconnect_indication (handle, reason)
290  *
291  *    Got disconnect, so clean up everything associated with this connection
292  *
293  */
294 static void iriap_disconnect_indication(void *instance, void *sap,
295                                         LM_REASON reason,
296                                         struct sk_buff *skb)
297 {
298         struct iriap_cb *self;
299
300         IRDA_DEBUG(4, "%s(), reason=%s\n", __FUNCTION__, irlmp_reasons[reason]);
301
302         self = (struct iriap_cb *) instance;
303
304         IRDA_ASSERT(self != NULL, return;);
305         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
306
307         IRDA_ASSERT(iriap != NULL, return;);
308
309         del_timer(&self->watchdog_timer);
310
311         /* Not needed */
312         if (skb)
313                 dev_kfree_skb(skb);
314
315         if (self->mode == IAS_CLIENT) {
316                 IRDA_DEBUG(4, "%s(), disconnect as client\n", __FUNCTION__);
317
318
319                 iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION,
320                                       NULL);
321                 /*
322                  * Inform service user that the request failed by sending
323                  * it a NULL value. Warning, the client might close us, so
324                  * remember no to use self anymore after calling confirm
325                  */
326                 if (self->confirm)
327                         self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
328         } else {
329                 IRDA_DEBUG(4, "%s(), disconnect as server\n", __FUNCTION__);
330                 iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION,
331                                       NULL);
332                 iriap_close(self);
333         }
334 }
335
336 /*
337  * Function iriap_disconnect_request (handle)
338  */
339 static void iriap_disconnect_request(struct iriap_cb *self)
340 {
341         struct sk_buff *tx_skb;
342
343         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
344
345         IRDA_ASSERT(self != NULL, return;);
346         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
347
348         tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
349         if (tx_skb == NULL) {
350                 IRDA_DEBUG(0,
351                            "%s(), Could not allocate an sk_buff of length %d\n",
352                            __FUNCTION__, LMP_MAX_HEADER);
353                 return;
354         }
355
356         /*
357          *  Reserve space for MUX control and LAP header
358          */
359         skb_reserve(tx_skb, LMP_MAX_HEADER);
360
361         irlmp_disconnect_request(self->lsap, tx_skb);
362 }
363
364 /*
365  * Function iriap_getvaluebyclass (addr, name, attr)
366  *
367  *    Retrieve all values from attribute in all objects with given class
368  *    name
369  */
370 int iriap_getvaluebyclass_request(struct iriap_cb *self,
371                                   __u32 saddr, __u32 daddr,
372                                   char *name, char *attr)
373 {
374         struct sk_buff *tx_skb;
375         int name_len, attr_len, skb_len;
376         __u8 *frame;
377
378         IRDA_ASSERT(self != NULL, return -1;);
379         IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;);
380
381         /* Client must supply the destination device address */
382         if (!daddr)
383                 return -1;
384
385         self->daddr = daddr;
386         self->saddr = saddr;
387
388         /*
389          *  Save operation, so we know what the later indication is about
390          */
391         self->operation = GET_VALUE_BY_CLASS;
392
393         /* Give ourselves 10 secs to finish this operation */
394         iriap_start_watchdog_timer(self, 10*HZ);
395
396         name_len = strlen(name);        /* Up to IAS_MAX_CLASSNAME = 60 */
397         attr_len = strlen(attr);        /* Up to IAS_MAX_ATTRIBNAME = 60 */
398
399         skb_len = self->max_header_size+2+name_len+1+attr_len+4;
400         tx_skb = alloc_skb(skb_len, GFP_ATOMIC);
401         if (!tx_skb)
402                 return -ENOMEM;
403
404         /* Reserve space for MUX and LAP header */
405         skb_reserve(tx_skb, self->max_header_size);
406         skb_put(tx_skb, 3+name_len+attr_len);
407         frame = tx_skb->data;
408
409         /* Build frame */
410         frame[0] = IAP_LST | GET_VALUE_BY_CLASS;
411         frame[1] = name_len;                       /* Insert length of name */
412         memcpy(frame+2, name, name_len);           /* Insert name */
413         frame[2+name_len] = attr_len;              /* Insert length of attr */
414         memcpy(frame+3+name_len, attr, attr_len);  /* Insert attr */
415
416         iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb);
417
418         /* Drop reference count - see state_s_disconnect(). */
419         dev_kfree_skb(tx_skb);
420
421         return 0;
422 }
423 EXPORT_SYMBOL(iriap_getvaluebyclass_request);
424
425 /*
426  * Function iriap_getvaluebyclass_confirm (self, skb)
427  *
428  *    Got result from GetValueByClass command. Parse it and return result
429  *    to service user.
430  *
431  */
432 static void iriap_getvaluebyclass_confirm(struct iriap_cb *self,
433                                           struct sk_buff *skb)
434 {
435         struct ias_value *value;
436         int charset;
437         __u32 value_len;
438         __u32 tmp_cpu32;
439         __u16 obj_id;
440         __u16 len;
441         __u8  type;
442         __u8 *fp;
443         int n;
444
445         IRDA_ASSERT(self != NULL, return;);
446         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
447         IRDA_ASSERT(skb != NULL, return;);
448
449         /* Initialize variables */
450         fp = skb->data;
451         n = 2;
452
453         /* Get length, MSB first */
454         len = be16_to_cpu(get_unaligned((__be16 *)(fp+n))); n += 2;
455
456         IRDA_DEBUG(4, "%s(), len=%d\n", __FUNCTION__, len);
457
458         /* Get object ID, MSB first */
459         obj_id = be16_to_cpu(get_unaligned((__be16 *)(fp+n))); n += 2;
460
461         type = fp[n++];
462         IRDA_DEBUG(4, "%s(), Value type = %d\n", __FUNCTION__, type);
463
464         switch (type) {
465         case IAS_INTEGER:
466                 memcpy(&tmp_cpu32, fp+n, 4); n += 4;
467                 be32_to_cpus(&tmp_cpu32);
468                 value = irias_new_integer_value(tmp_cpu32);
469
470                 /*  Legal values restricted to 0x01-0x6f, page 15 irttp */
471                 IRDA_DEBUG(4, "%s(), lsap=%d\n", __FUNCTION__, value->t.integer);
472                 break;
473         case IAS_STRING:
474                 charset = fp[n++];
475
476                 switch (charset) {
477                 case CS_ASCII:
478                         break;
479 /*              case CS_ISO_8859_1: */
480 /*              case CS_ISO_8859_2: */
481 /*              case CS_ISO_8859_3: */
482 /*              case CS_ISO_8859_4: */
483 /*              case CS_ISO_8859_5: */
484 /*              case CS_ISO_8859_6: */
485 /*              case CS_ISO_8859_7: */
486 /*              case CS_ISO_8859_8: */
487 /*              case CS_ISO_8859_9: */
488 /*              case CS_UNICODE: */
489                 default:
490                         IRDA_DEBUG(0, "%s(), charset %s, not supported\n",
491                                    __FUNCTION__, ias_charset_types[charset]);
492
493                         /* Aborting, close connection! */
494                         iriap_disconnect_request(self);
495                         return;
496                         /* break; */
497                 }
498                 value_len = fp[n++];
499                 IRDA_DEBUG(4, "%s(), strlen=%d\n", __FUNCTION__, value_len);
500
501                 /* Make sure the string is null-terminated */
502                 fp[n+value_len] = 0x00;
503                 IRDA_DEBUG(4, "Got string %s\n", fp+n);
504
505                 /* Will truncate to IAS_MAX_STRING bytes */
506                 value = irias_new_string_value(fp+n);
507                 break;
508         case IAS_OCT_SEQ:
509                 value_len = be16_to_cpu(get_unaligned((__be16 *)(fp+n)));
510                 n += 2;
511
512                 /* Will truncate to IAS_MAX_OCTET_STRING bytes */
513                 value = irias_new_octseq_value(fp+n, value_len);
514                 break;
515         default:
516                 value = irias_new_missing_value();
517                 break;
518         }
519
520         /* Finished, close connection! */
521         iriap_disconnect_request(self);
522
523         /* Warning, the client might close us, so remember no to use self
524          * anymore after calling confirm
525          */
526         if (self->confirm)
527                 self->confirm(IAS_SUCCESS, obj_id, value, self->priv);
528         else {
529                 IRDA_DEBUG(0, "%s(), missing handler!\n", __FUNCTION__);
530                 irias_delete_value(value);
531         }
532 }
533
534 /*
535  * Function iriap_getvaluebyclass_response ()
536  *
537  *    Send answer back to remote LM-IAS
538  *
539  */
540 static void iriap_getvaluebyclass_response(struct iriap_cb *self,
541                                            __u16 obj_id,
542                                            __u8 ret_code,
543                                            struct ias_value *value)
544 {
545         struct sk_buff *tx_skb;
546         int n;
547         __be32 tmp_be32;
548         __be16 tmp_be16;
549         __u8 *fp;
550
551         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
552
553         IRDA_ASSERT(self != NULL, return;);
554         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
555         IRDA_ASSERT(value != NULL, return;);
556         IRDA_ASSERT(value->len <= 1024, return;);
557
558         /* Initialize variables */
559         n = 0;
560
561         /*
562          *  We must adjust the size of the response after the length of the
563          *  value. We add 32 bytes because of the 6 bytes for the frame and
564          *  max 5 bytes for the value coding.
565          */
566         tx_skb = alloc_skb(value->len + self->max_header_size + 32,
567                            GFP_ATOMIC);
568         if (!tx_skb)
569                 return;
570
571         /* Reserve space for MUX and LAP header */
572         skb_reserve(tx_skb, self->max_header_size);
573         skb_put(tx_skb, 6);
574
575         fp = tx_skb->data;
576
577         /* Build frame */
578         fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
579         fp[n++] = ret_code;
580
581         /* Insert list length (MSB first) */
582         tmp_be16 = __constant_htons(0x0001);
583         memcpy(fp+n, &tmp_be16, 2);  n += 2;
584
585         /* Insert object identifier ( MSB first) */
586         tmp_be16 = cpu_to_be16(obj_id);
587         memcpy(fp+n, &tmp_be16, 2); n += 2;
588
589         switch (value->type) {
590         case IAS_STRING:
591                 skb_put(tx_skb, 3 + value->len);
592                 fp[n++] = value->type;
593                 fp[n++] = 0; /* ASCII */
594                 fp[n++] = (__u8) value->len;
595                 memcpy(fp+n, value->t.string, value->len); n+=value->len;
596                 break;
597         case IAS_INTEGER:
598                 skb_put(tx_skb, 5);
599                 fp[n++] = value->type;
600
601                 tmp_be32 = cpu_to_be32(value->t.integer);
602                 memcpy(fp+n, &tmp_be32, 4); n += 4;
603                 break;
604         case IAS_OCT_SEQ:
605                 skb_put(tx_skb, 3 + value->len);
606                 fp[n++] = value->type;
607
608                 tmp_be16 = cpu_to_be16(value->len);
609                 memcpy(fp+n, &tmp_be16, 2); n += 2;
610                 memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
611                 break;
612         case IAS_MISSING:
613                 IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __FUNCTION__);
614                 skb_put(tx_skb, 1);
615                 fp[n++] = value->type;
616                 break;
617         default:
618                 IRDA_DEBUG(0, "%s(), type not implemented!\n", __FUNCTION__);
619                 break;
620         }
621         iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);
622
623         /* Drop reference count - see state_r_execute(). */
624         dev_kfree_skb(tx_skb);
625 }
626
627 /*
628  * Function iriap_getvaluebyclass_indication (self, skb)
629  *
630  *    getvaluebyclass is requested from peer LM-IAS
631  *
632  */
633 static void iriap_getvaluebyclass_indication(struct iriap_cb *self,
634                                              struct sk_buff *skb)
635 {
636         struct ias_object *obj;
637         struct ias_attrib *attrib;
638         int name_len;
639         int attr_len;
640         char name[IAS_MAX_CLASSNAME + 1];       /* 60 bytes */
641         char attr[IAS_MAX_ATTRIBNAME + 1];      /* 60 bytes */
642         __u8 *fp;
643         int n;
644
645         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
646
647         IRDA_ASSERT(self != NULL, return;);
648         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
649         IRDA_ASSERT(skb != NULL, return;);
650
651         fp = skb->data;
652         n = 1;
653
654         name_len = fp[n++];
655         memcpy(name, fp+n, name_len); n+=name_len;
656         name[name_len] = '\0';
657
658         attr_len = fp[n++];
659         memcpy(attr, fp+n, attr_len); n+=attr_len;
660         attr[attr_len] = '\0';
661
662         IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr);
663         obj = irias_find_object(name);
664
665         if (obj == NULL) {
666                 IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name);
667                 iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN,
668                                                &irias_missing);
669                 return;
670         }
671         IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id);
672
673         attrib = irias_find_attrib(obj, attr);
674         if (attrib == NULL) {
675                 IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr);
676                 iriap_getvaluebyclass_response(self, obj->id,
677                                                IAS_ATTRIB_UNKNOWN,
678                                                &irias_missing);
679                 return;
680         }
681
682         /* We have a match; send the value.  */
683         iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS,
684                                        attrib->value);
685
686         return;
687 }
688
689 /*
690  * Function iriap_send_ack (void)
691  *
692  *    Currently not used
693  *
694  */
695 void iriap_send_ack(struct iriap_cb *self)
696 {
697         struct sk_buff *tx_skb;
698         __u8 *frame;
699
700         IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
701
702         IRDA_ASSERT(self != NULL, return;);
703         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
704
705         tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC);
706         if (!tx_skb)
707                 return;
708
709         /* Reserve space for MUX and LAP header */
710         skb_reserve(tx_skb, self->max_header_size);
711         skb_put(tx_skb, 1);
712         frame = tx_skb->data;
713
714         /* Build frame */
715         frame[0] = IAP_LST | IAP_ACK | self->operation;
716
717         irlmp_data_request(self->lsap, tx_skb);
718 }
719
720 void iriap_connect_request(struct iriap_cb *self)
721 {
722         int ret;
723
724         IRDA_ASSERT(self != NULL, return;);
725         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
726
727         ret = irlmp_connect_request(self->lsap, LSAP_IAS,
728                                     self->saddr, self->daddr,
729                                     NULL, NULL);
730         if (ret < 0) {
731                 IRDA_DEBUG(0, "%s(), connect failed!\n", __FUNCTION__);
732                 self->confirm(IAS_DISCONNECT, 0, NULL, self->priv);
733         }
734 }
735
736 /*
737  * Function iriap_connect_confirm (handle, skb)
738  *
739  *    LSAP connection confirmed!
740  *
741  */
742 static void iriap_connect_confirm(void *instance, void *sap,
743                                   struct qos_info *qos, __u32 max_seg_size,
744                                   __u8 max_header_size,
745                                   struct sk_buff *skb)
746 {
747         struct iriap_cb *self;
748
749         self = (struct iriap_cb *) instance;
750
751         IRDA_ASSERT(self != NULL, return;);
752         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
753         IRDA_ASSERT(skb != NULL, return;);
754
755         self->max_data_size = max_seg_size;
756         self->max_header_size = max_header_size;
757
758         del_timer(&self->watchdog_timer);
759
760         iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb);
761
762         /* Drop reference count - see state_s_make_call(). */
763         dev_kfree_skb(skb);
764 }
765
766 /*
767  * Function iriap_connect_indication ( handle, skb)
768  *
769  *    Remote LM-IAS is requesting connection
770  *
771  */
772 static void iriap_connect_indication(void *instance, void *sap,
773                                      struct qos_info *qos, __u32 max_seg_size,
774                                      __u8 max_header_size,
775                                      struct sk_buff *skb)
776 {
777         struct iriap_cb *self, *new;
778
779         IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
780
781         self = (struct iriap_cb *) instance;
782
783         IRDA_ASSERT(skb != NULL, return;);
784         IRDA_ASSERT(self != NULL, goto out;);
785         IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
786
787         /* Start new server */
788         new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL);
789         if (!new) {
790                 IRDA_DEBUG(0, "%s(), open failed\n", __FUNCTION__);
791                 goto out;
792         }
793
794         /* Now attach up the new "socket" */
795         new->lsap = irlmp_dup(self->lsap, new);
796         if (!new->lsap) {
797                 IRDA_DEBUG(0, "%s(), dup failed!\n", __FUNCTION__);
798                 goto out;
799         }
800
801         new->max_data_size = max_seg_size;
802         new->max_header_size = max_header_size;
803
804         /* Clean up the original one to keep it in listen state */
805         irlmp_listen(self->lsap);
806
807         iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb);
808
809 out:
810         /* Drop reference count - see state_r_disconnect(). */
811         dev_kfree_skb(skb);
812 }
813
814 /*
815  * Function iriap_data_indication (handle, skb)
816  *
817  *    Receives data from connection identified by handle from IrLMP
818  *
819  */
820 static int iriap_data_indication(void *instance, void *sap,
821                                  struct sk_buff *skb)
822 {
823         struct iriap_cb *self;
824         __u8  *frame;
825         __u8  opcode;
826
827         IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
828
829         self = (struct iriap_cb *) instance;
830
831         IRDA_ASSERT(skb != NULL, return 0;);
832         IRDA_ASSERT(self != NULL, goto out;);
833         IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;);
834
835         frame = skb->data;
836
837         if (self->mode == IAS_SERVER) {
838                 /* Call server */
839                 IRDA_DEBUG(4, "%s(), Calling server!\n", __FUNCTION__);
840                 iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb);
841                 goto out;
842         }
843         opcode = frame[0];
844         if (~opcode & IAP_LST) {
845                 IRDA_WARNING("%s:, IrIAS multiframe commands or "
846                              "results is not implemented yet!\n",
847                              __FUNCTION__);
848                 goto out;
849         }
850
851         /* Check for ack frames since they don't contain any data */
852         if (opcode & IAP_ACK) {
853                 IRDA_DEBUG(0, "%s() Got ack frame!\n", __FUNCTION__);
854                 goto out;
855         }
856
857         opcode &= ~IAP_LST; /* Mask away LST bit */
858
859         switch (opcode) {
860         case GET_INFO_BASE:
861                 IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n");
862                 break;
863         case GET_VALUE_BY_CLASS:
864                 iriap_do_call_event(self, IAP_RECV_F_LST, NULL);
865
866                 switch (frame[1]) {
867                 case IAS_SUCCESS:
868                         iriap_getvaluebyclass_confirm(self, skb);
869                         break;
870                 case IAS_CLASS_UNKNOWN:
871                         IRDA_DEBUG(1, "%s(), No such class!\n", __FUNCTION__);
872                         /* Finished, close connection! */
873                         iriap_disconnect_request(self);
874
875                         /*
876                          * Warning, the client might close us, so remember
877                          * no to use self anymore after calling confirm
878                          */
879                         if (self->confirm)
880                                 self->confirm(IAS_CLASS_UNKNOWN, 0, NULL,
881                                               self->priv);
882                         break;
883                 case IAS_ATTRIB_UNKNOWN:
884                         IRDA_DEBUG(1, "%s(), No such attribute!\n", __FUNCTION__);
885                         /* Finished, close connection! */
886                         iriap_disconnect_request(self);
887
888                         /*
889                          * Warning, the client might close us, so remember
890                          * no to use self anymore after calling confirm
891                          */
892                         if (self->confirm)
893                                 self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL,
894                                               self->priv);
895                         break;
896                 }
897                 break;
898         default:
899                 IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __FUNCTION__,
900                            opcode);
901                 break;
902         }
903
904 out:
905         /* Cleanup - sub-calls will have done skb_get() as needed. */
906         dev_kfree_skb(skb);
907         return 0;
908 }
909
910 /*
911  * Function iriap_call_indication (self, skb)
912  *
913  *    Received call to server from peer LM-IAS
914  *
915  */
916 void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb)
917 {
918         __u8 *fp;
919         __u8 opcode;
920
921         IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
922
923         IRDA_ASSERT(self != NULL, return;);
924         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
925         IRDA_ASSERT(skb != NULL, return;);
926
927         fp = skb->data;
928
929         opcode = fp[0];
930         if (~opcode & 0x80) {
931                 IRDA_WARNING("%s: IrIAS multiframe commands or results"
932                              "is not implemented yet!\n", __FUNCTION__);
933                 return;
934         }
935         opcode &= 0x7f; /* Mask away LST bit */
936
937         switch (opcode) {
938         case GET_INFO_BASE:
939                 IRDA_WARNING("%s: GetInfoBaseDetails not implemented yet!\n",
940                              __FUNCTION__);
941                 break;
942         case GET_VALUE_BY_CLASS:
943                 iriap_getvaluebyclass_indication(self, skb);
944                 break;
945         }
946         /* skb will be cleaned up in iriap_data_indication */
947 }
948
949 /*
950  * Function iriap_watchdog_timer_expired (data)
951  *
952  *    Query has taken too long time, so abort
953  *
954  */
955 static void iriap_watchdog_timer_expired(void *data)
956 {
957         struct iriap_cb *self = (struct iriap_cb *) data;
958
959         IRDA_ASSERT(self != NULL, return;);
960         IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
961
962         /* iriap_close(self); */
963 }
964
965 #ifdef CONFIG_PROC_FS
966
967 static const char *ias_value_types[] = {
968         "IAS_MISSING",
969         "IAS_INTEGER",
970         "IAS_OCT_SEQ",
971         "IAS_STRING"
972 };
973
974 static inline struct ias_object *irias_seq_idx(loff_t pos)
975 {
976         struct ias_object *obj;
977
978         for (obj = (struct ias_object *) hashbin_get_first(irias_objects);
979              obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) {
980                 if (pos-- == 0)
981                         break;
982         }
983
984         return obj;
985 }
986
987 static void *irias_seq_start(struct seq_file *seq, loff_t *pos)
988 {
989         spin_lock_irq(&irias_objects->hb_spinlock);
990
991         return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN;
992 }
993
994 static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos)
995 {
996         ++*pos;
997
998         return (v == SEQ_START_TOKEN)
999                 ? (void *) hashbin_get_first(irias_objects)
1000                 : (void *) hashbin_get_next(irias_objects);
1001 }
1002
1003 static void irias_seq_stop(struct seq_file *seq, void *v)
1004 {
1005         spin_unlock_irq(&irias_objects->hb_spinlock);
1006 }
1007
1008 static int irias_seq_show(struct seq_file *seq, void *v)
1009 {
1010         if (v == SEQ_START_TOKEN)
1011                 seq_puts(seq, "LM-IAS Objects:\n");
1012         else {
1013                 struct ias_object *obj = v;
1014                 struct ias_attrib *attrib;
1015
1016                 IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;);
1017
1018                 seq_printf(seq, "name: %s, id=%d\n",
1019                            obj->name, obj->id);
1020
1021                 /* Careful for priority inversions here !
1022                  * All other uses of attrib spinlock are independent of
1023                  * the object spinlock, so we are safe. Jean II */
1024                 spin_lock(&obj->attribs->hb_spinlock);
1025
1026                 /* List all attributes for this object */
1027                 for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs);
1028                      attrib != NULL;
1029                      attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) {
1030
1031                         IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC,
1032                                     goto outloop; );
1033
1034                         seq_printf(seq, " - Attribute name: \"%s\", ",
1035                                    attrib->name);
1036                         seq_printf(seq, "value[%s]: ",
1037                                    ias_value_types[attrib->value->type]);
1038
1039                         switch (attrib->value->type) {
1040                         case IAS_INTEGER:
1041                                 seq_printf(seq, "%d\n",
1042                                            attrib->value->t.integer);
1043                                 break;
1044                         case IAS_STRING:
1045                                 seq_printf(seq, "\"%s\"\n",
1046                                            attrib->value->t.string);
1047                                 break;
1048                         case IAS_OCT_SEQ:
1049                                 seq_printf(seq, "octet sequence (%d bytes)\n",
1050                                            attrib->value->len);
1051                                 break;
1052                         case IAS_MISSING:
1053                                 seq_puts(seq, "missing\n");
1054                                 break;
1055                         default:
1056                                 seq_printf(seq, "type %d?\n",
1057                                            attrib->value->type);
1058                         }
1059                         seq_putc(seq, '\n');
1060
1061                 }
1062         IRDA_ASSERT_LABEL(outloop:)
1063                 spin_unlock(&obj->attribs->hb_spinlock);
1064         }
1065
1066         return 0;
1067 }
1068
1069 static const struct seq_operations irias_seq_ops = {
1070         .start  = irias_seq_start,
1071         .next   = irias_seq_next,
1072         .stop   = irias_seq_stop,
1073         .show   = irias_seq_show,
1074 };
1075
1076 static int irias_seq_open(struct inode *inode, struct file *file)
1077 {
1078         IRDA_ASSERT( irias_objects != NULL, return -EINVAL;);
1079
1080         return seq_open(file, &irias_seq_ops);
1081 }
1082
1083 const struct file_operations irias_seq_fops = {
1084         .owner          = THIS_MODULE,
1085         .open           = irias_seq_open,
1086         .read           = seq_read,
1087         .llseek         = seq_lseek,
1088         .release        = seq_release,
1089 };
1090
1091 #endif /* PROC_FS */