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26
27#include <linux/module.h>
28#include <linux/slab.h>
29#include <linux/string.h>
30#include <linux/skbuff.h>
31#include <linux/types.h>
32#include <linux/proc_fs.h>
33#include <linux/init.h>
34#include <linux/kmod.h>
35#include <linux/random.h>
36#include <linux/seq_file.h>
37
38#include <net/irda/irda.h>
39#include <net/irda/timer.h>
40#include <net/irda/qos.h>
41#include <net/irda/irlap.h>
42#include <net/irda/iriap.h>
43#include <net/irda/irlmp.h>
44#include <net/irda/irlmp_frame.h>
45
46#include <asm/unaligned.h>
47
48static __u8 irlmp_find_free_slsap(void);
49static int irlmp_slsap_inuse(__u8 slsap_sel);
50
51
52struct irlmp_cb *irlmp = NULL;
53
54
55int sysctl_discovery = 0;
56int sysctl_discovery_timeout = 3;
57int sysctl_discovery_slots = 6;
58int sysctl_lap_keepalive_time = LM_IDLE_TIMEOUT * 1000 / HZ;
59char sysctl_devname[65];
60
61const char *irlmp_reasons[] = {
62 "ERROR, NOT USED",
63 "LM_USER_REQUEST",
64 "LM_LAP_DISCONNECT",
65 "LM_CONNECT_FAILURE",
66 "LM_LAP_RESET",
67 "LM_INIT_DISCONNECT",
68 "ERROR, NOT USED",
69};
70
71
72
73
74
75
76
77int __init irlmp_init(void)
78{
79 IRDA_DEBUG(1, "%s()\n", __func__);
80
81 irlmp = kzalloc( sizeof(struct irlmp_cb), GFP_KERNEL);
82 if (irlmp == NULL)
83 return -ENOMEM;
84
85 irlmp->magic = LMP_MAGIC;
86
87 irlmp->clients = hashbin_new(HB_LOCK);
88 irlmp->services = hashbin_new(HB_LOCK);
89 irlmp->links = hashbin_new(HB_LOCK);
90 irlmp->unconnected_lsaps = hashbin_new(HB_LOCK);
91 irlmp->cachelog = hashbin_new(HB_NOLOCK);
92
93 if ((irlmp->clients == NULL) ||
94 (irlmp->services == NULL) ||
95 (irlmp->links == NULL) ||
96 (irlmp->unconnected_lsaps == NULL) ||
97 (irlmp->cachelog == NULL)) {
98 return -ENOMEM;
99 }
100
101 spin_lock_init(&irlmp->cachelog->hb_spinlock);
102
103 irlmp->last_lsap_sel = 0x0f;
104 strcpy(sysctl_devname, "Linux");
105
106 init_timer(&irlmp->discovery_timer);
107
108
109 if (sysctl_discovery)
110 irlmp_start_discovery_timer(irlmp,
111 sysctl_discovery_timeout*HZ);
112
113 return 0;
114}
115
116
117
118
119
120
121
122void irlmp_cleanup(void)
123{
124
125 IRDA_ASSERT(irlmp != NULL, return;);
126 IRDA_ASSERT(irlmp->magic == LMP_MAGIC, return;);
127
128 del_timer(&irlmp->discovery_timer);
129
130 hashbin_delete(irlmp->links, (FREE_FUNC) kfree);
131 hashbin_delete(irlmp->unconnected_lsaps, (FREE_FUNC) kfree);
132 hashbin_delete(irlmp->clients, (FREE_FUNC) kfree);
133 hashbin_delete(irlmp->services, (FREE_FUNC) kfree);
134 hashbin_delete(irlmp->cachelog, (FREE_FUNC) kfree);
135
136
137 kfree(irlmp);
138 irlmp = NULL;
139}
140
141
142
143
144
145
146
147struct lsap_cb *irlmp_open_lsap(__u8 slsap_sel, notify_t *notify, __u8 pid)
148{
149 struct lsap_cb *self;
150
151 IRDA_ASSERT(notify != NULL, return NULL;);
152 IRDA_ASSERT(irlmp != NULL, return NULL;);
153 IRDA_ASSERT(irlmp->magic == LMP_MAGIC, return NULL;);
154 IRDA_ASSERT(notify->instance != NULL, return NULL;);
155
156
157 if (slsap_sel == LSAP_ANY) {
158 slsap_sel = irlmp_find_free_slsap();
159 if (!slsap_sel)
160 return NULL;
161 } else if (irlmp_slsap_inuse(slsap_sel))
162 return NULL;
163
164
165 self = kzalloc(sizeof(struct lsap_cb), GFP_ATOMIC);
166 if (self == NULL) {
167 IRDA_ERROR("%s: can't allocate memory\n", __func__);
168 return NULL;
169 }
170
171 self->magic = LMP_LSAP_MAGIC;
172 self->slsap_sel = slsap_sel;
173
174
175 if (slsap_sel == LSAP_CONNLESS) {
176#ifdef CONFIG_IRDA_ULTRA
177 self->dlsap_sel = LSAP_CONNLESS;
178 self->pid = pid;
179#endif
180 } else
181 self->dlsap_sel = LSAP_ANY;
182
183
184 init_timer(&self->watchdog_timer);
185
186 self->notify = *notify;
187
188 self->lsap_state = LSAP_DISCONNECTED;
189
190
191 hashbin_insert(irlmp->unconnected_lsaps, (irda_queue_t *) self,
192 (long) self, NULL);
193
194 return self;
195}
196EXPORT_SYMBOL(irlmp_open_lsap);
197
198
199
200
201
202
203static void __irlmp_close_lsap(struct lsap_cb *self)
204{
205 IRDA_DEBUG(4, "%s()\n", __func__);
206
207 IRDA_ASSERT(self != NULL, return;);
208 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
209
210
211
212
213 self->magic = 0;
214 del_timer(&self->watchdog_timer);
215
216 if (self->conn_skb)
217 dev_kfree_skb(self->conn_skb);
218
219 kfree(self);
220}
221
222
223
224
225
226
227
228void irlmp_close_lsap(struct lsap_cb *self)
229{
230 struct lap_cb *lap;
231 struct lsap_cb *lsap = NULL;
232
233 IRDA_ASSERT(self != NULL, return;);
234 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
235
236
237
238
239
240 lap = self->lap;
241 if (lap) {
242 IRDA_ASSERT(lap->magic == LMP_LAP_MAGIC, return;);
243
244
245
246
247 if(self->lsap_state != LSAP_DISCONNECTED) {
248 self->lsap_state = LSAP_DISCONNECTED;
249 irlmp_do_lap_event(self->lap,
250 LM_LAP_DISCONNECT_REQUEST, NULL);
251 }
252
253 lsap = hashbin_remove(lap->lsaps, (long) self, NULL);
254#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
255 lap->cache.valid = FALSE;
256#endif
257 }
258 self->lap = NULL;
259
260 if (!lsap) {
261 lsap = hashbin_remove(irlmp->unconnected_lsaps, (long) self,
262 NULL);
263 }
264 if (!lsap) {
265 IRDA_DEBUG(0,
266 "%s(), Looks like somebody has removed me already!\n",
267 __func__);
268 return;
269 }
270 __irlmp_close_lsap(self);
271}
272EXPORT_SYMBOL(irlmp_close_lsap);
273
274
275
276
277
278
279
280
281void irlmp_register_link(struct irlap_cb *irlap, __u32 saddr, notify_t *notify)
282{
283 struct lap_cb *lap;
284
285 IRDA_ASSERT(irlmp != NULL, return;);
286 IRDA_ASSERT(irlmp->magic == LMP_MAGIC, return;);
287 IRDA_ASSERT(notify != NULL, return;);
288
289
290
291
292 lap = kzalloc(sizeof(struct lap_cb), GFP_KERNEL);
293 if (lap == NULL) {
294 IRDA_ERROR("%s: unable to kmalloc\n", __func__);
295 return;
296 }
297
298 lap->irlap = irlap;
299 lap->magic = LMP_LAP_MAGIC;
300 lap->saddr = saddr;
301 lap->daddr = DEV_ADDR_ANY;
302#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
303 lap->cache.valid = FALSE;
304#endif
305 lap->lsaps = hashbin_new(HB_LOCK);
306 if (lap->lsaps == NULL) {
307 IRDA_WARNING("%s(), unable to kmalloc lsaps\n", __func__);
308 kfree(lap);
309 return;
310 }
311
312 lap->lap_state = LAP_STANDBY;
313
314 init_timer(&lap->idle_timer);
315
316
317
318
319 hashbin_insert(irlmp->links, (irda_queue_t *) lap, lap->saddr, NULL);
320
321
322
323
324
325 irda_notify_init(notify);
326 notify->instance = lap;
327}
328
329
330
331
332
333
334
335void irlmp_unregister_link(__u32 saddr)
336{
337 struct lap_cb *link;
338
339 IRDA_DEBUG(4, "%s()\n", __func__);
340
341
342
343
344 link = hashbin_remove(irlmp->links, saddr, NULL);
345 if (link) {
346 IRDA_ASSERT(link->magic == LMP_LAP_MAGIC, return;);
347
348
349 link->reason = LAP_DISC_INDICATION;
350 link->daddr = DEV_ADDR_ANY;
351 irlmp_do_lap_event(link, LM_LAP_DISCONNECT_INDICATION, NULL);
352
353
354 irlmp_expire_discoveries(irlmp->cachelog, link->saddr, TRUE);
355
356
357 del_timer(&link->idle_timer);
358 link->magic = 0;
359 hashbin_delete(link->lsaps, (FREE_FUNC) __irlmp_close_lsap);
360 kfree(link);
361 }
362}
363
364
365
366
367
368
369
370int irlmp_connect_request(struct lsap_cb *self, __u8 dlsap_sel,
371 __u32 saddr, __u32 daddr,
372 struct qos_info *qos, struct sk_buff *userdata)
373{
374 struct sk_buff *tx_skb = userdata;
375 struct lap_cb *lap;
376 struct lsap_cb *lsap;
377 int ret;
378
379 IRDA_ASSERT(self != NULL, return -EBADR;);
380 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -EBADR;);
381
382 IRDA_DEBUG(2,
383 "%s(), slsap_sel=%02x, dlsap_sel=%02x, saddr=%08x, daddr=%08x\n",
384 __func__, self->slsap_sel, dlsap_sel, saddr, daddr);
385
386 if (test_bit(0, &self->connected)) {
387 ret = -EISCONN;
388 goto err;
389 }
390
391
392 if (!daddr) {
393 ret = -EINVAL;
394 goto err;
395 }
396
397
398 if (tx_skb == NULL) {
399 tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
400 if (!tx_skb)
401 return -ENOMEM;
402
403 skb_reserve(tx_skb, LMP_MAX_HEADER);
404 }
405
406
407 IRDA_ASSERT(skb_headroom(tx_skb) >= LMP_CONTROL_HEADER, return -1;);
408 skb_push(tx_skb, LMP_CONTROL_HEADER);
409
410 self->dlsap_sel = dlsap_sel;
411
412
413
414
415
416
417
418
419
420 if ((!saddr) || (saddr == DEV_ADDR_ANY)) {
421 discovery_t *discovery;
422 unsigned long flags;
423
424 spin_lock_irqsave(&irlmp->cachelog->hb_spinlock, flags);
425 if (daddr != DEV_ADDR_ANY)
426 discovery = hashbin_find(irlmp->cachelog, daddr, NULL);
427 else {
428 IRDA_DEBUG(2, "%s(), no daddr\n", __func__);
429 discovery = (discovery_t *)
430 hashbin_get_first(irlmp->cachelog);
431 }
432
433 if (discovery) {
434 saddr = discovery->data.saddr;
435 daddr = discovery->data.daddr;
436 }
437 spin_unlock_irqrestore(&irlmp->cachelog->hb_spinlock, flags);
438 }
439 lap = hashbin_lock_find(irlmp->links, saddr, NULL);
440 if (lap == NULL) {
441 IRDA_DEBUG(1, "%s(), Unable to find a usable link!\n", __func__);
442 ret = -EHOSTUNREACH;
443 goto err;
444 }
445
446
447 if (lap->daddr == DEV_ADDR_ANY)
448 lap->daddr = daddr;
449 else if (lap->daddr != daddr) {
450
451 if (HASHBIN_GET_SIZE(lap->lsaps) == 0) {
452
453
454
455
456 IRDA_DEBUG(0, "%s(), sorry, but I'm waiting for LAP to timeout!\n", __func__);
457 ret = -EAGAIN;
458 goto err;
459 }
460
461
462
463 IRDA_DEBUG(0, "%s(), sorry, but link is busy!\n", __func__);
464 ret = -EBUSY;
465 goto err;
466 }
467
468 self->lap = lap;
469
470
471
472
473
474 lsap = hashbin_remove(irlmp->unconnected_lsaps, (long) self, NULL);
475
476 IRDA_ASSERT(lsap != NULL, return -1;);
477 IRDA_ASSERT(lsap->magic == LMP_LSAP_MAGIC, return -1;);
478 IRDA_ASSERT(lsap->lap != NULL, return -1;);
479 IRDA_ASSERT(lsap->lap->magic == LMP_LAP_MAGIC, return -1;);
480
481 hashbin_insert(self->lap->lsaps, (irda_queue_t *) self, (long) self,
482 NULL);
483
484 set_bit(0, &self->connected);
485
486
487
488
489 if (qos)
490 self->qos = *qos;
491
492 irlmp_do_lsap_event(self, LM_CONNECT_REQUEST, tx_skb);
493
494
495 dev_kfree_skb(tx_skb);
496
497 return 0;
498
499err:
500
501 if(tx_skb)
502 dev_kfree_skb(tx_skb);
503 return ret;
504}
505EXPORT_SYMBOL(irlmp_connect_request);
506
507
508
509
510
511
512
513void irlmp_connect_indication(struct lsap_cb *self, struct sk_buff *skb)
514{
515 int max_seg_size;
516 int lap_header_size;
517 int max_header_size;
518
519 IRDA_ASSERT(self != NULL, return;);
520 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
521 IRDA_ASSERT(skb != NULL, return;);
522 IRDA_ASSERT(self->lap != NULL, return;);
523
524 IRDA_DEBUG(2, "%s(), slsap_sel=%02x, dlsap_sel=%02x\n",
525 __func__, self->slsap_sel, self->dlsap_sel);
526
527
528
529
530
531
532 self->qos = *self->lap->qos;
533
534 max_seg_size = self->lap->qos->data_size.value-LMP_HEADER;
535 lap_header_size = IRLAP_GET_HEADER_SIZE(self->lap->irlap);
536 max_header_size = LMP_HEADER + lap_header_size;
537
538
539 skb_pull(skb, LMP_CONTROL_HEADER);
540
541 if (self->notify.connect_indication) {
542
543 skb_get(skb);
544 self->notify.connect_indication(self->notify.instance, self,
545 &self->qos, max_seg_size,
546 max_header_size, skb);
547 }
548}
549
550
551
552
553
554
555
556int irlmp_connect_response(struct lsap_cb *self, struct sk_buff *userdata)
557{
558 IRDA_ASSERT(self != NULL, return -1;);
559 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
560 IRDA_ASSERT(userdata != NULL, return -1;);
561
562
563
564
565 IRDA_DEBUG(2, "%s(), slsap_sel=%02x, dlsap_sel=%02x\n",
566 __func__, self->slsap_sel, self->dlsap_sel);
567
568
569 IRDA_ASSERT(skb_headroom(userdata) >= LMP_CONTROL_HEADER, return -1;);
570 skb_push(userdata, LMP_CONTROL_HEADER);
571
572 irlmp_do_lsap_event(self, LM_CONNECT_RESPONSE, userdata);
573
574
575 dev_kfree_skb(userdata);
576
577 return 0;
578}
579EXPORT_SYMBOL(irlmp_connect_response);
580
581
582
583
584
585
586void irlmp_connect_confirm(struct lsap_cb *self, struct sk_buff *skb)
587{
588 int max_header_size;
589 int lap_header_size;
590 int max_seg_size;
591
592 IRDA_DEBUG(3, "%s()\n", __func__);
593
594 IRDA_ASSERT(skb != NULL, return;);
595 IRDA_ASSERT(self != NULL, return;);
596 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
597 IRDA_ASSERT(self->lap != NULL, return;);
598
599 self->qos = *self->lap->qos;
600
601 max_seg_size = self->lap->qos->data_size.value-LMP_HEADER;
602 lap_header_size = IRLAP_GET_HEADER_SIZE(self->lap->irlap);
603 max_header_size = LMP_HEADER + lap_header_size;
604
605 IRDA_DEBUG(2, "%s(), max_header_size=%d\n",
606 __func__, max_header_size);
607
608
609 skb_pull(skb, LMP_CONTROL_HEADER);
610
611 if (self->notify.connect_confirm) {
612
613 skb_get(skb);
614 self->notify.connect_confirm(self->notify.instance, self,
615 &self->qos, max_seg_size,
616 max_header_size, skb);
617 }
618}
619
620
621
622
623
624
625
626
627struct lsap_cb *irlmp_dup(struct lsap_cb *orig, void *instance)
628{
629 struct lsap_cb *new;
630 unsigned long flags;
631
632 IRDA_DEBUG(1, "%s()\n", __func__);
633
634 spin_lock_irqsave(&irlmp->unconnected_lsaps->hb_spinlock, flags);
635
636
637
638 if ((!hashbin_find(irlmp->unconnected_lsaps, (long) orig, NULL)) ||
639 (orig->lap == NULL)) {
640 IRDA_DEBUG(0, "%s(), invalid LSAP (wrong state)\n",
641 __func__);
642 spin_unlock_irqrestore(&irlmp->unconnected_lsaps->hb_spinlock,
643 flags);
644 return NULL;
645 }
646
647
648 new = kmemdup(orig, sizeof(*new), GFP_ATOMIC);
649 if (!new) {
650 IRDA_DEBUG(0, "%s(), unable to kmalloc\n", __func__);
651 spin_unlock_irqrestore(&irlmp->unconnected_lsaps->hb_spinlock,
652 flags);
653 return NULL;
654 }
655
656
657 new->conn_skb = NULL;
658
659 spin_unlock_irqrestore(&irlmp->unconnected_lsaps->hb_spinlock, flags);
660
661
662 new->notify.instance = instance;
663
664 init_timer(&new->watchdog_timer);
665
666 hashbin_insert(irlmp->unconnected_lsaps, (irda_queue_t *) new,
667 (long) new, NULL);
668
669#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
670
671 new->lap->cache.valid = FALSE;
672#endif
673
674 return new;
675}
676
677
678
679
680
681
682
683int irlmp_disconnect_request(struct lsap_cb *self, struct sk_buff *userdata)
684{
685 struct lsap_cb *lsap;
686
687 IRDA_ASSERT(self != NULL, return -1;);
688 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
689 IRDA_ASSERT(userdata != NULL, return -1;);
690
691
692
693
694
695 if (! test_and_clear_bit(0, &self->connected)) {
696 IRDA_DEBUG(0, "%s(), already disconnected!\n", __func__);
697 dev_kfree_skb(userdata);
698 return -1;
699 }
700
701 skb_push(userdata, LMP_CONTROL_HEADER);
702
703
704
705
706
707 irlmp_do_lsap_event(self, LM_DISCONNECT_REQUEST, userdata);
708
709
710 dev_kfree_skb(userdata);
711
712
713
714
715
716 IRDA_ASSERT(self->lap != NULL, return -1;);
717 IRDA_ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
718 IRDA_ASSERT(self->lap->lsaps != NULL, return -1;);
719
720 lsap = hashbin_remove(self->lap->lsaps, (long) self, NULL);
721#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
722 self->lap->cache.valid = FALSE;
723#endif
724
725 IRDA_ASSERT(lsap != NULL, return -1;);
726 IRDA_ASSERT(lsap->magic == LMP_LSAP_MAGIC, return -1;);
727 IRDA_ASSERT(lsap == self, return -1;);
728
729 hashbin_insert(irlmp->unconnected_lsaps, (irda_queue_t *) self,
730 (long) self, NULL);
731
732
733 self->dlsap_sel = LSAP_ANY;
734 self->lap = NULL;
735
736 return 0;
737}
738EXPORT_SYMBOL(irlmp_disconnect_request);
739
740
741
742
743
744
745void irlmp_disconnect_indication(struct lsap_cb *self, LM_REASON reason,
746 struct sk_buff *skb)
747{
748 struct lsap_cb *lsap;
749
750 IRDA_DEBUG(1, "%s(), reason=%s\n", __func__, irlmp_reasons[reason]);
751 IRDA_ASSERT(self != NULL, return;);
752 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
753
754 IRDA_DEBUG(3, "%s(), slsap_sel=%02x, dlsap_sel=%02x\n",
755 __func__, self->slsap_sel, self->dlsap_sel);
756
757
758
759
760
761 if (! test_and_clear_bit(0, &self->connected)) {
762 IRDA_DEBUG(0, "%s(), already disconnected!\n", __func__);
763 return;
764 }
765
766
767
768
769 IRDA_ASSERT(self->lap != NULL, return;);
770 IRDA_ASSERT(self->lap->lsaps != NULL, return;);
771
772 lsap = hashbin_remove(self->lap->lsaps, (long) self, NULL);
773#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
774 self->lap->cache.valid = FALSE;
775#endif
776
777 IRDA_ASSERT(lsap != NULL, return;);
778 IRDA_ASSERT(lsap == self, return;);
779 hashbin_insert(irlmp->unconnected_lsaps, (irda_queue_t *) lsap,
780 (long) lsap, NULL);
781
782 self->dlsap_sel = LSAP_ANY;
783 self->lap = NULL;
784
785
786
787
788 if (self->notify.disconnect_indication) {
789
790 if(skb)
791 skb_get(skb);
792 self->notify.disconnect_indication(self->notify.instance,
793 self, reason, skb);
794 } else {
795 IRDA_DEBUG(0, "%s(), no handler\n", __func__);
796 }
797}
798
799
800
801
802
803
804
805
806
807void irlmp_do_expiry(void)
808{
809 struct lap_cb *lap;
810
811
812
813
814
815
816
817
818
819
820 lap = (struct lap_cb *) hashbin_get_first(irlmp->links);
821 while (lap != NULL) {
822 IRDA_ASSERT(lap->magic == LMP_LAP_MAGIC, return;);
823
824 if (lap->lap_state == LAP_STANDBY) {
825
826 irlmp_expire_discoveries(irlmp->cachelog, lap->saddr,
827 FALSE);
828 }
829 lap = (struct lap_cb *) hashbin_get_next(irlmp->links);
830 }
831}
832
833
834
835
836
837
838
839
840void irlmp_do_discovery(int nslots)
841{
842 struct lap_cb *lap;
843 __u16 *data_hintsp;
844
845
846 if ((nslots != 1) && (nslots != 6) && (nslots != 8) && (nslots != 16)){
847 IRDA_WARNING("%s: invalid value for number of slots!\n",
848 __func__);
849 nslots = sysctl_discovery_slots = 8;
850 }
851
852
853 data_hintsp = (__u16 *) irlmp->discovery_cmd.data.hints;
854 put_unaligned(irlmp->hints.word, data_hintsp);
855
856
857
858
859
860
861 irlmp->discovery_cmd.data.charset = CS_ASCII;
862 strncpy(irlmp->discovery_cmd.data.info, sysctl_devname,
863 NICKNAME_MAX_LEN);
864 irlmp->discovery_cmd.name_len = strlen(irlmp->discovery_cmd.data.info);
865 irlmp->discovery_cmd.nslots = nslots;
866
867
868
869
870 lap = (struct lap_cb *) hashbin_get_first(irlmp->links);
871 while (lap != NULL) {
872 IRDA_ASSERT(lap->magic == LMP_LAP_MAGIC, return;);
873
874 if (lap->lap_state == LAP_STANDBY) {
875
876 irlmp_do_lap_event(lap, LM_LAP_DISCOVERY_REQUEST,
877 NULL);
878 }
879 lap = (struct lap_cb *) hashbin_get_next(irlmp->links);
880 }
881}
882
883
884
885
886
887
888
889
890
891
892void irlmp_discovery_request(int nslots)
893{
894
895 irlmp_discovery_confirm(irlmp->cachelog, DISCOVERY_LOG);
896
897
898
899
900
901 if (!sysctl_discovery) {
902
903 if (nslots == DISCOVERY_DEFAULT_SLOTS)
904 nslots = sysctl_discovery_slots;
905
906 irlmp_do_discovery(nslots);
907
908
909
910 }
911}
912EXPORT_SYMBOL(irlmp_discovery_request);
913
914
915
916
917
918
919
920
921
922struct irda_device_info *irlmp_get_discoveries(int *pn, __u16 mask, int nslots)
923{
924
925
926
927
928
929 if (!sysctl_discovery) {
930
931 if (nslots == DISCOVERY_DEFAULT_SLOTS)
932 nslots = sysctl_discovery_slots;
933
934
935 irlmp_do_discovery(nslots);
936
937
938
939 }
940
941
942 return(irlmp_copy_discoveries(irlmp->cachelog, pn, mask, TRUE));
943}
944EXPORT_SYMBOL(irlmp_get_discoveries);
945
946
947
948
949
950
951
952
953
954
955
956
957
958static inline void
959irlmp_notify_client(irlmp_client_t *client,
960 hashbin_t *log, DISCOVERY_MODE mode)
961{
962 discinfo_t *discoveries;
963 int number;
964 int i;
965
966 IRDA_DEBUG(3, "%s()\n", __func__);
967
968
969 if (!client->disco_callback)
970 return;
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990 discoveries = irlmp_copy_discoveries(log, &number,
991 client->hint_mask.word,
992 (mode == DISCOVERY_LOG));
993
994 if (discoveries == NULL)
995 return;
996
997
998 for(i = 0; i < number; i++)
999 client->disco_callback(&(discoveries[i]), mode, client->priv);
1000
1001
1002 kfree(discoveries);
1003}
1004
1005
1006
1007
1008
1009
1010
1011
1012void irlmp_discovery_confirm(hashbin_t *log, DISCOVERY_MODE mode)
1013{
1014 irlmp_client_t *client;
1015 irlmp_client_t *client_next;
1016
1017 IRDA_DEBUG(3, "%s()\n", __func__);
1018
1019 IRDA_ASSERT(log != NULL, return;);
1020
1021 if (!(HASHBIN_GET_SIZE(log)))
1022 return;
1023
1024
1025 client = (irlmp_client_t *) hashbin_get_first(irlmp->clients);
1026 while (NULL != hashbin_find_next(irlmp->clients, (long) client, NULL,
1027 (void *) &client_next) ) {
1028
1029 irlmp_notify_client(client, log, mode);
1030
1031 client = client_next;
1032 }
1033}
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046void irlmp_discovery_expiry(discinfo_t *expiries, int number)
1047{
1048 irlmp_client_t *client;
1049 irlmp_client_t *client_next;
1050 int i;
1051
1052 IRDA_DEBUG(3, "%s()\n", __func__);
1053
1054 IRDA_ASSERT(expiries != NULL, return;);
1055
1056
1057 client = (irlmp_client_t *) hashbin_get_first(irlmp->clients);
1058 while (NULL != hashbin_find_next(irlmp->clients, (long) client, NULL,
1059 (void *) &client_next) ) {
1060
1061
1062 for(i = 0; i < number; i++) {
1063
1064 if ((client->expir_callback) &&
1065 (client->hint_mask.word &
1066 get_unaligned((__u16 *)expiries[i].hints)
1067 & 0x7f7f) )
1068 client->expir_callback(&(expiries[i]),
1069 EXPIRY_TIMEOUT,
1070 client->priv);
1071 }
1072
1073
1074 client = client_next;
1075 }
1076}
1077
1078
1079
1080
1081
1082
1083
1084discovery_t *irlmp_get_discovery_response(void)
1085{
1086 IRDA_DEBUG(4, "%s()\n", __func__);
1087
1088 IRDA_ASSERT(irlmp != NULL, return NULL;);
1089
1090 put_unaligned(irlmp->hints.word, (__u16 *)irlmp->discovery_rsp.data.hints);
1091
1092
1093
1094
1095
1096
1097 irlmp->discovery_rsp.data.charset = CS_ASCII;
1098
1099 strncpy(irlmp->discovery_rsp.data.info, sysctl_devname,
1100 NICKNAME_MAX_LEN);
1101 irlmp->discovery_rsp.name_len = strlen(irlmp->discovery_rsp.data.info);
1102
1103 return &irlmp->discovery_rsp;
1104}
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119int irlmp_data_request(struct lsap_cb *self, struct sk_buff *userdata)
1120{
1121 int ret;
1122
1123 IRDA_ASSERT(self != NULL, return -1;);
1124 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
1125
1126
1127 IRDA_ASSERT(skb_headroom(userdata) >= LMP_HEADER, return -1;);
1128 skb_push(userdata, LMP_HEADER);
1129
1130 ret = irlmp_do_lsap_event(self, LM_DATA_REQUEST, userdata);
1131
1132
1133 dev_kfree_skb(userdata);
1134
1135 return ret;
1136}
1137EXPORT_SYMBOL(irlmp_data_request);
1138
1139
1140
1141
1142
1143
1144
1145void irlmp_data_indication(struct lsap_cb *self, struct sk_buff *skb)
1146{
1147
1148 skb_pull(skb, LMP_HEADER);
1149
1150 if (self->notify.data_indication) {
1151
1152 skb_get(skb);
1153 self->notify.data_indication(self->notify.instance, self, skb);
1154 }
1155}
1156
1157
1158
1159
1160int irlmp_udata_request(struct lsap_cb *self, struct sk_buff *userdata)
1161{
1162 int ret;
1163
1164 IRDA_DEBUG(4, "%s()\n", __func__);
1165
1166 IRDA_ASSERT(userdata != NULL, return -1;);
1167
1168
1169 IRDA_ASSERT(skb_headroom(userdata) >= LMP_HEADER, return -1;);
1170 skb_push(userdata, LMP_HEADER);
1171
1172 ret = irlmp_do_lsap_event(self, LM_UDATA_REQUEST, userdata);
1173
1174
1175 dev_kfree_skb(userdata);
1176
1177 return ret;
1178}
1179
1180
1181
1182
1183
1184
1185
1186void irlmp_udata_indication(struct lsap_cb *self, struct sk_buff *skb)
1187{
1188 IRDA_DEBUG(4, "%s()\n", __func__);
1189
1190 IRDA_ASSERT(self != NULL, return;);
1191 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
1192 IRDA_ASSERT(skb != NULL, return;);
1193
1194
1195 skb_pull(skb, LMP_HEADER);
1196
1197 if (self->notify.udata_indication) {
1198
1199 skb_get(skb);
1200 self->notify.udata_indication(self->notify.instance, self,
1201 skb);
1202 }
1203}
1204
1205
1206
1207
1208#ifdef CONFIG_IRDA_ULTRA
1209int irlmp_connless_data_request(struct lsap_cb *self, struct sk_buff *userdata,
1210 __u8 pid)
1211{
1212 struct sk_buff *clone_skb;
1213 struct lap_cb *lap;
1214
1215 IRDA_DEBUG(4, "%s()\n", __func__);
1216
1217 IRDA_ASSERT(userdata != NULL, return -1;);
1218
1219
1220 IRDA_ASSERT(skb_headroom(userdata) >= LMP_HEADER+LMP_PID_HEADER,
1221 return -1;);
1222
1223
1224 skb_push(userdata, LMP_PID_HEADER);
1225 if(self != NULL)
1226 userdata->data[0] = self->pid;
1227 else
1228 userdata->data[0] = pid;
1229
1230
1231 skb_push(userdata, LMP_HEADER);
1232 userdata->data[0] = userdata->data[1] = LSAP_CONNLESS;
1233
1234
1235 lap = (struct lap_cb *) hashbin_get_first(irlmp->links);
1236 while (lap != NULL) {
1237 IRDA_ASSERT(lap->magic == LMP_LAP_MAGIC, return -1;);
1238
1239 clone_skb = skb_clone(userdata, GFP_ATOMIC);
1240 if (!clone_skb) {
1241 dev_kfree_skb(userdata);
1242 return -ENOMEM;
1243 }
1244
1245 irlap_unitdata_request(lap->irlap, clone_skb);
1246
1247
1248
1249 lap = (struct lap_cb *) hashbin_get_next(irlmp->links);
1250 }
1251 dev_kfree_skb(userdata);
1252
1253 return 0;
1254}
1255#endif
1256
1257
1258
1259
1260
1261
1262
1263#ifdef CONFIG_IRDA_ULTRA
1264void irlmp_connless_data_indication(struct lsap_cb *self, struct sk_buff *skb)
1265{
1266 IRDA_DEBUG(4, "%s()\n", __func__);
1267
1268 IRDA_ASSERT(self != NULL, return;);
1269 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
1270 IRDA_ASSERT(skb != NULL, return;);
1271
1272
1273 skb_pull(skb, LMP_HEADER+LMP_PID_HEADER);
1274
1275 if (self->notify.udata_indication) {
1276
1277 skb_get(skb);
1278 self->notify.udata_indication(self->notify.instance, self,
1279 skb);
1280 }
1281}
1282#endif
1283
1284
1285
1286
1287
1288
1289
1290
1291void irlmp_status_indication(struct lap_cb *self,
1292 LINK_STATUS link, LOCK_STATUS lock)
1293{
1294 struct lsap_cb *next;
1295 struct lsap_cb *curr;
1296
1297
1298 curr = (struct lsap_cb *) hashbin_get_first( self->lsaps);
1299 while (NULL != hashbin_find_next(self->lsaps, (long) curr, NULL,
1300 (void *) &next) ) {
1301 IRDA_ASSERT(curr->magic == LMP_LSAP_MAGIC, return;);
1302
1303
1304
1305 if (curr->notify.status_indication != NULL)
1306 curr->notify.status_indication(curr->notify.instance,
1307 link, lock);
1308 else
1309 IRDA_DEBUG(2, "%s(), no handler\n", __func__);
1310
1311 curr = next;
1312 }
1313}
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325void irlmp_flow_indication(struct lap_cb *self, LOCAL_FLOW flow)
1326{
1327 struct lsap_cb *next;
1328 struct lsap_cb *curr;
1329 int lsap_todo;
1330
1331 IRDA_ASSERT(self->magic == LMP_LAP_MAGIC, return;);
1332 IRDA_ASSERT(flow == FLOW_START, return;);
1333
1334
1335
1336 lsap_todo = HASHBIN_GET_SIZE(self->lsaps);
1337 IRDA_DEBUG(4, "%s() : %d lsaps to scan\n", __func__, lsap_todo);
1338
1339
1340
1341
1342
1343 while((lsap_todo--) &&
1344 (IRLAP_GET_TX_QUEUE_LEN(self->irlap) < LAP_HIGH_THRESHOLD)) {
1345
1346 next = self->flow_next;
1347
1348 if(next == NULL)
1349 next = (struct lsap_cb *) hashbin_get_first(self->lsaps);
1350
1351 curr = hashbin_find_next(self->lsaps, (long) next, NULL,
1352 (void *) &self->flow_next);
1353
1354 if(curr == NULL)
1355 break;
1356 IRDA_DEBUG(4, "%s() : curr is %p, next was %p and is now %p, still %d to go - queue len = %d\n", __func__, curr, next, self->flow_next, lsap_todo, IRLAP_GET_TX_QUEUE_LEN(self->irlap));
1357
1358
1359 if (curr->notify.flow_indication != NULL)
1360 curr->notify.flow_indication(curr->notify.instance,
1361 curr, flow);
1362 else
1363 IRDA_DEBUG(1, "%s(), no handler\n", __func__);
1364 }
1365}
1366
1367#if 0
1368
1369
1370
1371
1372
1373
1374__u8 *irlmp_hint_to_service(__u8 *hint)
1375{
1376 __u8 *service;
1377 int i = 0;
1378
1379
1380
1381
1382
1383 service = kmalloc(16, GFP_ATOMIC);
1384 if (!service) {
1385 IRDA_DEBUG(1, "%s(), Unable to kmalloc!\n", __func__);
1386 return NULL;
1387 }
1388
1389 if (!hint[0]) {
1390 IRDA_DEBUG(1, "<None>\n");
1391 kfree(service);
1392 return NULL;
1393 }
1394 if (hint[0] & HINT_PNP)
1395 IRDA_DEBUG(1, "PnP Compatible ");
1396 if (hint[0] & HINT_PDA)
1397 IRDA_DEBUG(1, "PDA/Palmtop ");
1398 if (hint[0] & HINT_COMPUTER)
1399 IRDA_DEBUG(1, "Computer ");
1400 if (hint[0] & HINT_PRINTER) {
1401 IRDA_DEBUG(1, "Printer ");
1402 service[i++] = S_PRINTER;
1403 }
1404 if (hint[0] & HINT_MODEM)
1405 IRDA_DEBUG(1, "Modem ");
1406 if (hint[0] & HINT_FAX)
1407 IRDA_DEBUG(1, "Fax ");
1408 if (hint[0] & HINT_LAN) {
1409 IRDA_DEBUG(1, "LAN Access ");
1410 service[i++] = S_LAN;
1411 }
1412
1413
1414
1415
1416
1417 if (hint[0] & HINT_EXTENSION) {
1418 if (hint[1] & HINT_TELEPHONY) {
1419 IRDA_DEBUG(1, "Telephony ");
1420 service[i++] = S_TELEPHONY;
1421 } if (hint[1] & HINT_FILE_SERVER)
1422 IRDA_DEBUG(1, "File Server ");
1423
1424 if (hint[1] & HINT_COMM) {
1425 IRDA_DEBUG(1, "IrCOMM ");
1426 service[i++] = S_COMM;
1427 }
1428 if (hint[1] & HINT_OBEX) {
1429 IRDA_DEBUG(1, "IrOBEX ");
1430 service[i++] = S_OBEX;
1431 }
1432 }
1433 IRDA_DEBUG(1, "\n");
1434
1435
1436 service[i++] = S_ANY;
1437
1438 service[i] = S_END;
1439
1440 return service;
1441}
1442#endif
1443
1444static const __u16 service_hint_mapping[S_END][2] = {
1445 { HINT_PNP, 0 },
1446 { HINT_PDA, 0 },
1447 { HINT_COMPUTER, 0 },
1448 { HINT_PRINTER, 0 },
1449 { HINT_MODEM, 0 },
1450 { HINT_FAX, 0 },
1451 { HINT_LAN, 0 },
1452 { HINT_EXTENSION, HINT_TELEPHONY },
1453 { HINT_EXTENSION, HINT_COMM },
1454 { HINT_EXTENSION, HINT_OBEX },
1455 { 0xFF, 0xFF },
1456};
1457
1458
1459
1460
1461
1462
1463
1464
1465__u16 irlmp_service_to_hint(int service)
1466{
1467 __u16_host_order hint;
1468
1469 hint.byte[0] = service_hint_mapping[service][0];
1470 hint.byte[1] = service_hint_mapping[service][1];
1471
1472 return hint.word;
1473}
1474EXPORT_SYMBOL(irlmp_service_to_hint);
1475
1476
1477
1478
1479
1480
1481
1482void *irlmp_register_service(__u16 hints)
1483{
1484 irlmp_service_t *service;
1485
1486 IRDA_DEBUG(4, "%s(), hints = %04x\n", __func__, hints);
1487
1488
1489 service = kmalloc(sizeof(irlmp_service_t), GFP_ATOMIC);
1490 if (!service) {
1491 IRDA_DEBUG(1, "%s(), Unable to kmalloc!\n", __func__);
1492 return NULL;
1493 }
1494 service->hints.word = hints;
1495 hashbin_insert(irlmp->services, (irda_queue_t *) service,
1496 (long) service, NULL);
1497
1498 irlmp->hints.word |= hints;
1499
1500 return (void *)service;
1501}
1502EXPORT_SYMBOL(irlmp_register_service);
1503
1504
1505
1506
1507
1508
1509
1510
1511int irlmp_unregister_service(void *handle)
1512{
1513 irlmp_service_t *service;
1514 unsigned long flags;
1515
1516 IRDA_DEBUG(4, "%s()\n", __func__);
1517
1518 if (!handle)
1519 return -1;
1520
1521
1522 service = hashbin_lock_find(irlmp->services, (long) handle, NULL);
1523 if (!service) {
1524 IRDA_DEBUG(1, "%s(), Unknown service!\n", __func__);
1525 return -1;
1526 }
1527
1528 hashbin_remove_this(irlmp->services, (irda_queue_t *) service);
1529 kfree(service);
1530
1531
1532 irlmp->hints.word = 0;
1533
1534
1535 spin_lock_irqsave(&irlmp->services->hb_spinlock, flags);
1536 service = (irlmp_service_t *) hashbin_get_first(irlmp->services);
1537 while (service) {
1538 irlmp->hints.word |= service->hints.word;
1539
1540 service = (irlmp_service_t *)hashbin_get_next(irlmp->services);
1541 }
1542 spin_unlock_irqrestore(&irlmp->services->hb_spinlock, flags);
1543 return 0;
1544}
1545EXPORT_SYMBOL(irlmp_unregister_service);
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556void *irlmp_register_client(__u16 hint_mask, DISCOVERY_CALLBACK1 disco_clb,
1557 DISCOVERY_CALLBACK2 expir_clb, void *priv)
1558{
1559 irlmp_client_t *client;
1560
1561 IRDA_DEBUG(1, "%s()\n", __func__);
1562 IRDA_ASSERT(irlmp != NULL, return NULL;);
1563
1564
1565 client = kmalloc(sizeof(irlmp_client_t), GFP_ATOMIC);
1566 if (!client) {
1567 IRDA_DEBUG( 1, "%s(), Unable to kmalloc!\n", __func__);
1568 return NULL;
1569 }
1570
1571
1572 client->hint_mask.word = hint_mask;
1573 client->disco_callback = disco_clb;
1574 client->expir_callback = expir_clb;
1575 client->priv = priv;
1576
1577 hashbin_insert(irlmp->clients, (irda_queue_t *) client,
1578 (long) client, NULL);
1579
1580 return (void *) client;
1581}
1582EXPORT_SYMBOL(irlmp_register_client);
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592int irlmp_update_client(void *handle, __u16 hint_mask,
1593 DISCOVERY_CALLBACK1 disco_clb,
1594 DISCOVERY_CALLBACK2 expir_clb, void *priv)
1595{
1596 irlmp_client_t *client;
1597
1598 if (!handle)
1599 return -1;
1600
1601 client = hashbin_lock_find(irlmp->clients, (long) handle, NULL);
1602 if (!client) {
1603 IRDA_DEBUG(1, "%s(), Unknown client!\n", __func__);
1604 return -1;
1605 }
1606
1607 client->hint_mask.word = hint_mask;
1608 client->disco_callback = disco_clb;
1609 client->expir_callback = expir_clb;
1610 client->priv = priv;
1611
1612 return 0;
1613}
1614EXPORT_SYMBOL(irlmp_update_client);
1615
1616
1617
1618
1619
1620
1621
1622int irlmp_unregister_client(void *handle)
1623{
1624 struct irlmp_client *client;
1625
1626 IRDA_DEBUG(4, "%s()\n", __func__);
1627
1628 if (!handle)
1629 return -1;
1630
1631
1632 client = hashbin_lock_find(irlmp->clients, (long) handle, NULL);
1633 if (!client) {
1634 IRDA_DEBUG(1, "%s(), Unknown client!\n", __func__);
1635 return -1;
1636 }
1637
1638 IRDA_DEBUG(4, "%s(), removing client!\n", __func__);
1639 hashbin_remove_this(irlmp->clients, (irda_queue_t *) client);
1640 kfree(client);
1641
1642 return 0;
1643}
1644EXPORT_SYMBOL(irlmp_unregister_client);
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657static int irlmp_slsap_inuse(__u8 slsap_sel)
1658{
1659 struct lsap_cb *self;
1660 struct lap_cb *lap;
1661 unsigned long flags;
1662
1663 IRDA_ASSERT(irlmp != NULL, return TRUE;);
1664 IRDA_ASSERT(irlmp->magic == LMP_MAGIC, return TRUE;);
1665 IRDA_ASSERT(slsap_sel != LSAP_ANY, return TRUE;);
1666
1667 IRDA_DEBUG(4, "%s()\n", __func__);
1668
1669#ifdef CONFIG_IRDA_ULTRA
1670
1671 if (slsap_sel == LSAP_CONNLESS)
1672 return FALSE;
1673#endif
1674
1675
1676 if (slsap_sel > LSAP_MAX)
1677 return TRUE;
1678
1679
1680
1681
1682
1683
1684 spin_lock_irqsave_nested(&irlmp->links->hb_spinlock, flags,
1685 SINGLE_DEPTH_NESTING);
1686 lap = (struct lap_cb *) hashbin_get_first(irlmp->links);
1687 while (lap != NULL) {
1688 IRDA_ASSERT(lap->magic == LMP_LAP_MAGIC, goto errlap;);
1689
1690
1691
1692
1693 spin_lock(&lap->lsaps->hb_spinlock);
1694
1695
1696 self = (struct lsap_cb *) hashbin_get_first(lap->lsaps);
1697 while (self != NULL) {
1698 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC,
1699 goto errlsap;);
1700
1701 if ((self->slsap_sel == slsap_sel)) {
1702 IRDA_DEBUG(4, "Source LSAP selector=%02x in use\n",
1703 self->slsap_sel);
1704 goto errlsap;
1705 }
1706 self = (struct lsap_cb*) hashbin_get_next(lap->lsaps);
1707 }
1708 spin_unlock(&lap->lsaps->hb_spinlock);
1709
1710
1711 lap = (struct lap_cb *) hashbin_get_next(irlmp->links);
1712 }
1713 spin_unlock_irqrestore(&irlmp->links->hb_spinlock, flags);
1714
1715
1716
1717
1718
1719
1720
1721 spin_lock_irqsave(&irlmp->unconnected_lsaps->hb_spinlock, flags);
1722
1723 self = (struct lsap_cb *) hashbin_get_first(irlmp->unconnected_lsaps);
1724 while (self != NULL) {
1725 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, goto erruncon;);
1726 if ((self->slsap_sel == slsap_sel)) {
1727 IRDA_DEBUG(4, "Source LSAP selector=%02x in use (unconnected)\n",
1728 self->slsap_sel);
1729 goto erruncon;
1730 }
1731 self = (struct lsap_cb*) hashbin_get_next(irlmp->unconnected_lsaps);
1732 }
1733 spin_unlock_irqrestore(&irlmp->unconnected_lsaps->hb_spinlock, flags);
1734
1735 return FALSE;
1736
1737
1738
1739
1740errlsap:
1741 spin_unlock(&lap->lsaps->hb_spinlock);
1742IRDA_ASSERT_LABEL(errlap:)
1743 spin_unlock_irqrestore(&irlmp->links->hb_spinlock, flags);
1744 return TRUE;
1745
1746
1747
1748erruncon:
1749 spin_unlock_irqrestore(&irlmp->unconnected_lsaps->hb_spinlock, flags);
1750 return TRUE;
1751}
1752
1753
1754
1755
1756
1757
1758
1759static __u8 irlmp_find_free_slsap(void)
1760{
1761 __u8 lsap_sel;
1762 int wrapped = 0;
1763
1764 IRDA_ASSERT(irlmp != NULL, return -1;);
1765 IRDA_ASSERT(irlmp->magic == LMP_MAGIC, return -1;);
1766
1767
1768
1769
1770
1771
1772 do {
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784 irlmp->last_lsap_sel++;
1785
1786
1787 if (irlmp->last_lsap_sel > LSAP_MAX) {
1788
1789 irlmp->last_lsap_sel = 0x10;
1790
1791
1792 if (wrapped++) {
1793 IRDA_ERROR("%s: no more free LSAPs !\n",
1794 __func__);
1795 return 0;
1796 }
1797 }
1798
1799
1800
1801
1802
1803
1804 } while (irlmp_slsap_inuse(irlmp->last_lsap_sel));
1805
1806
1807 lsap_sel = irlmp->last_lsap_sel;
1808 IRDA_DEBUG(4, "%s(), found free lsap_sel=%02x\n",
1809 __func__, lsap_sel);
1810
1811 return lsap_sel;
1812}
1813
1814
1815
1816
1817
1818
1819
1820
1821LM_REASON irlmp_convert_lap_reason( LAP_REASON lap_reason)
1822{
1823 int reason = LM_LAP_DISCONNECT;
1824
1825 switch (lap_reason) {
1826 case LAP_DISC_INDICATION:
1827 IRDA_DEBUG( 1, "%s(), LAP_DISC_INDICATION\n", __func__);
1828 reason = LM_USER_REQUEST;
1829 break;
1830 case LAP_NO_RESPONSE:
1831 IRDA_DEBUG( 1, "%s(), LAP_NO_RESPONSE\n", __func__);
1832 reason = LM_LAP_DISCONNECT;
1833 break;
1834 case LAP_RESET_INDICATION:
1835 IRDA_DEBUG( 1, "%s(), LAP_RESET_INDICATION\n", __func__);
1836 reason = LM_LAP_RESET;
1837 break;
1838 case LAP_FOUND_NONE:
1839 case LAP_MEDIA_BUSY:
1840 case LAP_PRIMARY_CONFLICT:
1841 IRDA_DEBUG(1, "%s(), LAP_FOUND_NONE, LAP_MEDIA_BUSY or LAP_PRIMARY_CONFLICT\n", __func__);
1842 reason = LM_CONNECT_FAILURE;
1843 break;
1844 default:
1845 IRDA_DEBUG(1, "%s(), Unknow IrLAP disconnect reason %d!\n",
1846 __func__, lap_reason);
1847 reason = LM_LAP_DISCONNECT;
1848 break;
1849 }
1850
1851 return reason;
1852}
1853
1854#ifdef CONFIG_PROC_FS
1855
1856struct irlmp_iter_state {
1857 hashbin_t *hashbin;
1858};
1859
1860#define LSAP_START_TOKEN ((void *)1)
1861#define LINK_START_TOKEN ((void *)2)
1862
1863static void *irlmp_seq_hb_idx(struct irlmp_iter_state *iter, loff_t *off)
1864{
1865 void *element;
1866
1867 spin_lock_irq(&iter->hashbin->hb_spinlock);
1868 for (element = hashbin_get_first(iter->hashbin);
1869 element != NULL;
1870 element = hashbin_get_next(iter->hashbin)) {
1871 if (!off || *off-- == 0) {
1872
1873 return element;
1874 }
1875 }
1876 spin_unlock_irq(&iter->hashbin->hb_spinlock);
1877 iter->hashbin = NULL;
1878 return NULL;
1879}
1880
1881
1882static void *irlmp_seq_start(struct seq_file *seq, loff_t *pos)
1883{
1884 struct irlmp_iter_state *iter = seq->private;
1885 void *v;
1886 loff_t off = *pos;
1887
1888 iter->hashbin = NULL;
1889 if (off-- == 0)
1890 return LSAP_START_TOKEN;
1891
1892 iter->hashbin = irlmp->unconnected_lsaps;
1893 v = irlmp_seq_hb_idx(iter, &off);
1894 if (v)
1895 return v;
1896
1897 if (off-- == 0)
1898 return LINK_START_TOKEN;
1899
1900 iter->hashbin = irlmp->links;
1901 return irlmp_seq_hb_idx(iter, &off);
1902}
1903
1904static void *irlmp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1905{
1906 struct irlmp_iter_state *iter = seq->private;
1907
1908 ++*pos;
1909
1910 if (v == LSAP_START_TOKEN) {
1911 iter->hashbin = irlmp->unconnected_lsaps;
1912 v = irlmp_seq_hb_idx(iter, NULL);
1913 return v ? v : LINK_START_TOKEN;
1914 }
1915
1916 if (v == LINK_START_TOKEN) {
1917 iter->hashbin = irlmp->links;
1918 return irlmp_seq_hb_idx(iter, NULL);
1919 }
1920
1921 v = hashbin_get_next(iter->hashbin);
1922
1923 if (v == NULL) {
1924 spin_unlock_irq(&iter->hashbin->hb_spinlock);
1925
1926 if (iter->hashbin == irlmp->unconnected_lsaps)
1927 v = LINK_START_TOKEN;
1928
1929 iter->hashbin = NULL;
1930 }
1931 return v;
1932}
1933
1934static void irlmp_seq_stop(struct seq_file *seq, void *v)
1935{
1936 struct irlmp_iter_state *iter = seq->private;
1937
1938 if (iter->hashbin)
1939 spin_unlock_irq(&iter->hashbin->hb_spinlock);
1940}
1941
1942static int irlmp_seq_show(struct seq_file *seq, void *v)
1943{
1944 const struct irlmp_iter_state *iter = seq->private;
1945 struct lsap_cb *self = v;
1946
1947 if (v == LSAP_START_TOKEN)
1948 seq_puts(seq, "Unconnected LSAPs:\n");
1949 else if (v == LINK_START_TOKEN)
1950 seq_puts(seq, "\nRegistered Link Layers:\n");
1951 else if (iter->hashbin == irlmp->unconnected_lsaps) {
1952 self = v;
1953 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -EINVAL; );
1954 seq_printf(seq, "lsap state: %s, ",
1955 irlsap_state[ self->lsap_state]);
1956 seq_printf(seq,
1957 "slsap_sel: %#02x, dlsap_sel: %#02x, ",
1958 self->slsap_sel, self->dlsap_sel);
1959 seq_printf(seq, "(%s)", self->notify.name);
1960 seq_printf(seq, "\n");
1961 } else if (iter->hashbin == irlmp->links) {
1962 struct lap_cb *lap = v;
1963
1964 seq_printf(seq, "lap state: %s, ",
1965 irlmp_state[lap->lap_state]);
1966
1967 seq_printf(seq, "saddr: %#08x, daddr: %#08x, ",
1968 lap->saddr, lap->daddr);
1969 seq_printf(seq, "num lsaps: %d",
1970 HASHBIN_GET_SIZE(lap->lsaps));
1971 seq_printf(seq, "\n");
1972
1973
1974
1975
1976 spin_lock(&lap->lsaps->hb_spinlock);
1977
1978 seq_printf(seq, "\n Connected LSAPs:\n");
1979 for (self = (struct lsap_cb *) hashbin_get_first(lap->lsaps);
1980 self != NULL;
1981 self = (struct lsap_cb *)hashbin_get_next(lap->lsaps)) {
1982 IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC,
1983 goto outloop;);
1984 seq_printf(seq, " lsap state: %s, ",
1985 irlsap_state[ self->lsap_state]);
1986 seq_printf(seq,
1987 "slsap_sel: %#02x, dlsap_sel: %#02x, ",
1988 self->slsap_sel, self->dlsap_sel);
1989 seq_printf(seq, "(%s)", self->notify.name);
1990 seq_putc(seq, '\n');
1991
1992 }
1993 IRDA_ASSERT_LABEL(outloop:)
1994 spin_unlock(&lap->lsaps->hb_spinlock);
1995 seq_putc(seq, '\n');
1996 } else
1997 return -EINVAL;
1998
1999 return 0;
2000}
2001
2002static const struct seq_operations irlmp_seq_ops = {
2003 .start = irlmp_seq_start,
2004 .next = irlmp_seq_next,
2005 .stop = irlmp_seq_stop,
2006 .show = irlmp_seq_show,
2007};
2008
2009static int irlmp_seq_open(struct inode *inode, struct file *file)
2010{
2011 IRDA_ASSERT(irlmp != NULL, return -EINVAL;);
2012
2013 return seq_open_private(file, &irlmp_seq_ops,
2014 sizeof(struct irlmp_iter_state));
2015}
2016
2017const struct file_operations irlmp_seq_fops = {
2018 .owner = THIS_MODULE,
2019 .open = irlmp_seq_open,
2020 .read = seq_read,
2021 .llseek = seq_lseek,
2022 .release = seq_release_private,
2023};
2024
2025#endif
2026