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27#include <linux/export.h>
28
29#include <net/bluetooth/bluetooth.h>
30#include <net/bluetooth/hci_core.h>
31#include <net/bluetooth/a2mp.h>
32#include <net/bluetooth/smp.h>
33
34static void hci_le_connect(struct hci_conn *conn)
35{
36 struct hci_dev *hdev = conn->hdev;
37 struct hci_cp_le_create_conn cp;
38
39 conn->state = BT_CONNECT;
40 conn->out = true;
41 conn->link_mode |= HCI_LM_MASTER;
42 conn->sec_level = BT_SECURITY_LOW;
43
44 memset(&cp, 0, sizeof(cp));
45 cp.scan_interval = __constant_cpu_to_le16(0x0060);
46 cp.scan_window = __constant_cpu_to_le16(0x0030);
47 bacpy(&cp.peer_addr, &conn->dst);
48 cp.peer_addr_type = conn->dst_type;
49 cp.conn_interval_min = __constant_cpu_to_le16(0x0028);
50 cp.conn_interval_max = __constant_cpu_to_le16(0x0038);
51 cp.supervision_timeout = __constant_cpu_to_le16(0x002a);
52 cp.min_ce_len = __constant_cpu_to_le16(0x0000);
53 cp.max_ce_len = __constant_cpu_to_le16(0x0000);
54
55 hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
56}
57
58static void hci_le_connect_cancel(struct hci_conn *conn)
59{
60 hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL);
61}
62
63void hci_acl_connect(struct hci_conn *conn)
64{
65 struct hci_dev *hdev = conn->hdev;
66 struct inquiry_entry *ie;
67 struct hci_cp_create_conn cp;
68
69 BT_DBG("hcon %p", conn);
70
71 conn->state = BT_CONNECT;
72 conn->out = true;
73
74 conn->link_mode = HCI_LM_MASTER;
75
76 conn->attempt++;
77
78 conn->link_policy = hdev->link_policy;
79
80 memset(&cp, 0, sizeof(cp));
81 bacpy(&cp.bdaddr, &conn->dst);
82 cp.pscan_rep_mode = 0x02;
83
84 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
85 if (ie) {
86 if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) {
87 cp.pscan_rep_mode = ie->data.pscan_rep_mode;
88 cp.pscan_mode = ie->data.pscan_mode;
89 cp.clock_offset = ie->data.clock_offset |
90 __constant_cpu_to_le16(0x8000);
91 }
92
93 memcpy(conn->dev_class, ie->data.dev_class, 3);
94 if (ie->data.ssp_mode > 0)
95 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
96 }
97
98 cp.pkt_type = cpu_to_le16(conn->pkt_type);
99 if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER))
100 cp.role_switch = 0x01;
101 else
102 cp.role_switch = 0x00;
103
104 hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp);
105}
106
107static void hci_acl_connect_cancel(struct hci_conn *conn)
108{
109 struct hci_cp_create_conn_cancel cp;
110
111 BT_DBG("hcon %p", conn);
112
113 if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2)
114 return;
115
116 bacpy(&cp.bdaddr, &conn->dst);
117 hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp);
118}
119
120void hci_acl_disconn(struct hci_conn *conn, __u8 reason)
121{
122 struct hci_cp_disconnect cp;
123
124 BT_DBG("hcon %p", conn);
125
126 conn->state = BT_DISCONN;
127
128 cp.handle = cpu_to_le16(conn->handle);
129 cp.reason = reason;
130 hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp);
131}
132
133void hci_add_sco(struct hci_conn *conn, __u16 handle)
134{
135 struct hci_dev *hdev = conn->hdev;
136 struct hci_cp_add_sco cp;
137
138 BT_DBG("hcon %p", conn);
139
140 conn->state = BT_CONNECT;
141 conn->out = true;
142
143 conn->attempt++;
144
145 cp.handle = cpu_to_le16(handle);
146 cp.pkt_type = cpu_to_le16(conn->pkt_type);
147
148 hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp);
149}
150
151void hci_setup_sync(struct hci_conn *conn, __u16 handle)
152{
153 struct hci_dev *hdev = conn->hdev;
154 struct hci_cp_setup_sync_conn cp;
155
156 BT_DBG("hcon %p", conn);
157
158 conn->state = BT_CONNECT;
159 conn->out = true;
160
161 conn->attempt++;
162
163 cp.handle = cpu_to_le16(handle);
164 cp.pkt_type = cpu_to_le16(conn->pkt_type);
165
166 cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40);
167 cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40);
168 cp.max_latency = __constant_cpu_to_le16(0xffff);
169 cp.voice_setting = cpu_to_le16(hdev->voice_setting);
170 cp.retrans_effort = 0xff;
171
172 hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp);
173}
174
175void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
176 u16 latency, u16 to_multiplier)
177{
178 struct hci_cp_le_conn_update cp;
179 struct hci_dev *hdev = conn->hdev;
180
181 memset(&cp, 0, sizeof(cp));
182
183 cp.handle = cpu_to_le16(conn->handle);
184 cp.conn_interval_min = cpu_to_le16(min);
185 cp.conn_interval_max = cpu_to_le16(max);
186 cp.conn_latency = cpu_to_le16(latency);
187 cp.supervision_timeout = cpu_to_le16(to_multiplier);
188 cp.min_ce_len = __constant_cpu_to_le16(0x0001);
189 cp.max_ce_len = __constant_cpu_to_le16(0x0001);
190
191 hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp);
192}
193
194void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
195 __u8 ltk[16])
196{
197 struct hci_dev *hdev = conn->hdev;
198 struct hci_cp_le_start_enc cp;
199
200 BT_DBG("hcon %p", conn);
201
202 memset(&cp, 0, sizeof(cp));
203
204 cp.handle = cpu_to_le16(conn->handle);
205 memcpy(cp.ltk, ltk, sizeof(cp.ltk));
206 cp.ediv = ediv;
207 memcpy(cp.rand, rand, sizeof(cp.rand));
208
209 hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp);
210}
211
212
213void hci_sco_setup(struct hci_conn *conn, __u8 status)
214{
215 struct hci_conn *sco = conn->link;
216
217 if (!sco)
218 return;
219
220 BT_DBG("hcon %p", conn);
221
222 if (!status) {
223 if (lmp_esco_capable(conn->hdev))
224 hci_setup_sync(sco, conn->handle);
225 else
226 hci_add_sco(sco, conn->handle);
227 } else {
228 hci_proto_connect_cfm(sco, status);
229 hci_conn_del(sco);
230 }
231}
232
233static void hci_conn_timeout(struct work_struct *work)
234{
235 struct hci_conn *conn = container_of(work, struct hci_conn,
236 disc_work.work);
237 __u8 reason;
238
239 BT_DBG("hcon %p state %s", conn, state_to_string(conn->state));
240
241 if (atomic_read(&conn->refcnt))
242 return;
243
244 switch (conn->state) {
245 case BT_CONNECT:
246 case BT_CONNECT2:
247 if (conn->out) {
248 if (conn->type == ACL_LINK)
249 hci_acl_connect_cancel(conn);
250 else if (conn->type == LE_LINK)
251 hci_le_connect_cancel(conn);
252 }
253 break;
254 case BT_CONFIG:
255 case BT_CONNECTED:
256 reason = hci_proto_disconn_ind(conn);
257 hci_acl_disconn(conn, reason);
258 break;
259 default:
260 conn->state = BT_CLOSED;
261 break;
262 }
263}
264
265
266static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
267{
268 struct hci_dev *hdev = conn->hdev;
269
270 BT_DBG("hcon %p mode %d", conn, conn->mode);
271
272 if (test_bit(HCI_RAW, &hdev->flags))
273 return;
274
275 if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn))
276 return;
277
278 if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF))
279 return;
280
281 if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) {
282 struct hci_cp_sniff_subrate cp;
283 cp.handle = cpu_to_le16(conn->handle);
284 cp.max_latency = __constant_cpu_to_le16(0);
285 cp.min_remote_timeout = __constant_cpu_to_le16(0);
286 cp.min_local_timeout = __constant_cpu_to_le16(0);
287 hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp);
288 }
289
290 if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) {
291 struct hci_cp_sniff_mode cp;
292 cp.handle = cpu_to_le16(conn->handle);
293 cp.max_interval = cpu_to_le16(hdev->sniff_max_interval);
294 cp.min_interval = cpu_to_le16(hdev->sniff_min_interval);
295 cp.attempt = __constant_cpu_to_le16(4);
296 cp.timeout = __constant_cpu_to_le16(1);
297 hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp);
298 }
299}
300
301static void hci_conn_idle(unsigned long arg)
302{
303 struct hci_conn *conn = (void *) arg;
304
305 BT_DBG("hcon %p mode %d", conn, conn->mode);
306
307 hci_conn_enter_sniff_mode(conn);
308}
309
310static void hci_conn_auto_accept(unsigned long arg)
311{
312 struct hci_conn *conn = (void *) arg;
313 struct hci_dev *hdev = conn->hdev;
314
315 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst),
316 &conn->dst);
317}
318
319struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
320{
321 struct hci_conn *conn;
322
323 BT_DBG("%s dst %s", hdev->name, batostr(dst));
324
325 conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL);
326 if (!conn)
327 return NULL;
328
329 bacpy(&conn->dst, dst);
330 conn->hdev = hdev;
331 conn->type = type;
332 conn->mode = HCI_CM_ACTIVE;
333 conn->state = BT_OPEN;
334 conn->auth_type = HCI_AT_GENERAL_BONDING;
335 conn->io_capability = hdev->io_capability;
336 conn->remote_auth = 0xff;
337 conn->key_type = 0xff;
338
339 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
340 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
341
342 switch (type) {
343 case ACL_LINK:
344 conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK;
345 break;
346 case SCO_LINK:
347 if (lmp_esco_capable(hdev))
348 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
349 (hdev->esco_type & EDR_ESCO_MASK);
350 else
351 conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK;
352 break;
353 case ESCO_LINK:
354 conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK;
355 break;
356 }
357
358 skb_queue_head_init(&conn->data_q);
359
360 INIT_LIST_HEAD(&conn->chan_list);
361
362 INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout);
363 setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn);
364 setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept,
365 (unsigned long) conn);
366
367 atomic_set(&conn->refcnt, 0);
368
369 hci_dev_hold(hdev);
370
371 hci_conn_hash_add(hdev, conn);
372 if (hdev->notify)
373 hdev->notify(hdev, HCI_NOTIFY_CONN_ADD);
374
375 atomic_set(&conn->devref, 0);
376
377 hci_conn_init_sysfs(conn);
378
379 return conn;
380}
381
382int hci_conn_del(struct hci_conn *conn)
383{
384 struct hci_dev *hdev = conn->hdev;
385
386 BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle);
387
388 del_timer(&conn->idle_timer);
389
390 cancel_delayed_work_sync(&conn->disc_work);
391
392 del_timer(&conn->auto_accept_timer);
393
394 if (conn->type == ACL_LINK) {
395 struct hci_conn *sco = conn->link;
396 if (sco)
397 sco->link = NULL;
398
399
400 hdev->acl_cnt += conn->sent;
401 } else if (conn->type == LE_LINK) {
402 if (hdev->le_pkts)
403 hdev->le_cnt += conn->sent;
404 else
405 hdev->acl_cnt += conn->sent;
406 } else {
407 struct hci_conn *acl = conn->link;
408 if (acl) {
409 acl->link = NULL;
410 hci_conn_put(acl);
411 }
412 }
413
414 hci_chan_list_flush(conn);
415
416 if (conn->amp_mgr)
417 amp_mgr_put(conn->amp_mgr);
418
419 hci_conn_hash_del(hdev, conn);
420 if (hdev->notify)
421 hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
422
423 skb_queue_purge(&conn->data_q);
424
425 hci_conn_put_device(conn);
426
427 hci_dev_put(hdev);
428
429 if (conn->handle == 0)
430 kfree(conn);
431
432 return 0;
433}
434
435struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
436{
437 int use_src = bacmp(src, BDADDR_ANY);
438 struct hci_dev *hdev = NULL, *d;
439
440 BT_DBG("%s -> %s", batostr(src), batostr(dst));
441
442 read_lock(&hci_dev_list_lock);
443
444 list_for_each_entry(d, &hci_dev_list, list) {
445 if (!test_bit(HCI_UP, &d->flags) ||
446 test_bit(HCI_RAW, &d->flags) ||
447 d->dev_type != HCI_BREDR)
448 continue;
449
450
451
452
453
454
455 if (use_src) {
456 if (!bacmp(&d->bdaddr, src)) {
457 hdev = d; break;
458 }
459 } else {
460 if (bacmp(&d->bdaddr, dst)) {
461 hdev = d; break;
462 }
463 }
464 }
465
466 if (hdev)
467 hdev = hci_dev_hold(hdev);
468
469 read_unlock(&hci_dev_list_lock);
470 return hdev;
471}
472EXPORT_SYMBOL(hci_get_route);
473
474
475
476struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
477 __u8 dst_type, __u8 sec_level, __u8 auth_type)
478{
479 struct hci_conn *acl;
480 struct hci_conn *sco;
481 struct hci_conn *le;
482
483 BT_DBG("%s dst %s", hdev->name, batostr(dst));
484
485 if (type == LE_LINK) {
486 le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst);
487 if (!le) {
488 le = hci_conn_hash_lookup_state(hdev, LE_LINK,
489 BT_CONNECT);
490 if (le)
491 return ERR_PTR(-EBUSY);
492
493 le = hci_conn_add(hdev, LE_LINK, dst);
494 if (!le)
495 return ERR_PTR(-ENOMEM);
496
497 le->dst_type = bdaddr_to_le(dst_type);
498 hci_le_connect(le);
499 }
500
501 le->pending_sec_level = sec_level;
502 le->auth_type = auth_type;
503
504 hci_conn_hold(le);
505
506 return le;
507 }
508
509 acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
510 if (!acl) {
511 acl = hci_conn_add(hdev, ACL_LINK, dst);
512 if (!acl)
513 return ERR_PTR(-ENOMEM);
514 }
515
516 hci_conn_hold(acl);
517
518 if (acl->state == BT_OPEN || acl->state == BT_CLOSED) {
519 acl->sec_level = BT_SECURITY_LOW;
520 acl->pending_sec_level = sec_level;
521 acl->auth_type = auth_type;
522 hci_acl_connect(acl);
523 }
524
525 if (type == ACL_LINK)
526 return acl;
527
528 sco = hci_conn_hash_lookup_ba(hdev, type, dst);
529 if (!sco) {
530 sco = hci_conn_add(hdev, type, dst);
531 if (!sco) {
532 hci_conn_put(acl);
533 return ERR_PTR(-ENOMEM);
534 }
535 }
536
537 acl->link = sco;
538 sco->link = acl;
539
540 hci_conn_hold(sco);
541
542 if (acl->state == BT_CONNECTED &&
543 (sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
544 set_bit(HCI_CONN_POWER_SAVE, &acl->flags);
545 hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON);
546
547 if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) {
548
549 set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags);
550 return sco;
551 }
552
553 hci_sco_setup(acl, 0x00);
554 }
555
556 return sco;
557}
558
559
560int hci_conn_check_link_mode(struct hci_conn *conn)
561{
562 BT_DBG("hcon %p", conn);
563
564 if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT))
565 return 0;
566
567 return 1;
568}
569
570
571static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
572{
573 BT_DBG("hcon %p", conn);
574
575 if (conn->pending_sec_level > sec_level)
576 sec_level = conn->pending_sec_level;
577
578 if (sec_level > conn->sec_level)
579 conn->pending_sec_level = sec_level;
580 else if (conn->link_mode & HCI_LM_AUTH)
581 return 1;
582
583
584 auth_type |= (conn->auth_type & 0x01);
585
586 conn->auth_type = auth_type;
587
588 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
589 struct hci_cp_auth_requested cp;
590
591
592 set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
593
594 cp.handle = cpu_to_le16(conn->handle);
595 hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
596 sizeof(cp), &cp);
597 if (conn->key_type != 0xff)
598 set_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
599 }
600
601 return 0;
602}
603
604
605static void hci_conn_encrypt(struct hci_conn *conn)
606{
607 BT_DBG("hcon %p", conn);
608
609 if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
610 struct hci_cp_set_conn_encrypt cp;
611 cp.handle = cpu_to_le16(conn->handle);
612 cp.encrypt = 0x01;
613 hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
614 &cp);
615 }
616}
617
618
619int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
620{
621 BT_DBG("hcon %p", conn);
622
623 if (conn->type == LE_LINK)
624 return smp_conn_security(conn, sec_level);
625
626
627 if (sec_level == BT_SECURITY_SDP)
628 return 1;
629
630
631
632 if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn))
633 return 1;
634
635
636 if (!(conn->link_mode & HCI_LM_AUTH))
637 goto auth;
638
639
640
641 if (conn->key_type == HCI_LK_AUTH_COMBINATION)
642 goto encrypt;
643
644
645
646 if (conn->key_type == HCI_LK_UNAUTH_COMBINATION &&
647 (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW))
648 goto encrypt;
649
650
651
652
653
654 if (conn->key_type == HCI_LK_COMBINATION &&
655 (sec_level != BT_SECURITY_HIGH || conn->pin_length == 16))
656 goto encrypt;
657
658auth:
659 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
660 return 0;
661
662 if (!hci_conn_auth(conn, sec_level, auth_type))
663 return 0;
664
665encrypt:
666 if (conn->link_mode & HCI_LM_ENCRYPT)
667 return 1;
668
669 hci_conn_encrypt(conn);
670 return 0;
671}
672EXPORT_SYMBOL(hci_conn_security);
673
674
675int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level)
676{
677 BT_DBG("hcon %p", conn);
678
679 if (sec_level != BT_SECURITY_HIGH)
680 return 1;
681
682 if (conn->sec_level == BT_SECURITY_HIGH)
683 return 1;
684
685 return 0;
686}
687EXPORT_SYMBOL(hci_conn_check_secure);
688
689
690int hci_conn_change_link_key(struct hci_conn *conn)
691{
692 BT_DBG("hcon %p", conn);
693
694 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
695 struct hci_cp_change_conn_link_key cp;
696 cp.handle = cpu_to_le16(conn->handle);
697 hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY,
698 sizeof(cp), &cp);
699 }
700
701 return 0;
702}
703
704
705int hci_conn_switch_role(struct hci_conn *conn, __u8 role)
706{
707 BT_DBG("hcon %p", conn);
708
709 if (!role && conn->link_mode & HCI_LM_MASTER)
710 return 1;
711
712 if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) {
713 struct hci_cp_switch_role cp;
714 bacpy(&cp.bdaddr, &conn->dst);
715 cp.role = role;
716 hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp);
717 }
718
719 return 0;
720}
721EXPORT_SYMBOL(hci_conn_switch_role);
722
723
724void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active)
725{
726 struct hci_dev *hdev = conn->hdev;
727
728 BT_DBG("hcon %p mode %d", conn, conn->mode);
729
730 if (test_bit(HCI_RAW, &hdev->flags))
731 return;
732
733 if (conn->mode != HCI_CM_SNIFF)
734 goto timer;
735
736 if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active)
737 goto timer;
738
739 if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) {
740 struct hci_cp_exit_sniff_mode cp;
741 cp.handle = cpu_to_le16(conn->handle);
742 hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp);
743 }
744
745timer:
746 if (hdev->idle_timeout > 0)
747 mod_timer(&conn->idle_timer,
748 jiffies + msecs_to_jiffies(hdev->idle_timeout));
749}
750
751
752void hci_conn_hash_flush(struct hci_dev *hdev)
753{
754 struct hci_conn_hash *h = &hdev->conn_hash;
755 struct hci_conn *c, *n;
756
757 BT_DBG("hdev %s", hdev->name);
758
759 list_for_each_entry_safe(c, n, &h->list, list) {
760 c->state = BT_CLOSED;
761
762 hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM);
763 hci_conn_del(c);
764 }
765}
766
767
768void hci_conn_check_pending(struct hci_dev *hdev)
769{
770 struct hci_conn *conn;
771
772 BT_DBG("hdev %s", hdev->name);
773
774 hci_dev_lock(hdev);
775
776 conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2);
777 if (conn)
778 hci_acl_connect(conn);
779
780 hci_dev_unlock(hdev);
781}
782
783void hci_conn_hold_device(struct hci_conn *conn)
784{
785 atomic_inc(&conn->devref);
786}
787EXPORT_SYMBOL(hci_conn_hold_device);
788
789void hci_conn_put_device(struct hci_conn *conn)
790{
791 if (atomic_dec_and_test(&conn->devref))
792 hci_conn_del_sysfs(conn);
793}
794EXPORT_SYMBOL(hci_conn_put_device);
795
796int hci_get_conn_list(void __user *arg)
797{
798 struct hci_conn *c;
799 struct hci_conn_list_req req, *cl;
800 struct hci_conn_info *ci;
801 struct hci_dev *hdev;
802 int n = 0, size, err;
803
804 if (copy_from_user(&req, arg, sizeof(req)))
805 return -EFAULT;
806
807 if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci))
808 return -EINVAL;
809
810 size = sizeof(req) + req.conn_num * sizeof(*ci);
811
812 cl = kmalloc(size, GFP_KERNEL);
813 if (!cl)
814 return -ENOMEM;
815
816 hdev = hci_dev_get(req.dev_id);
817 if (!hdev) {
818 kfree(cl);
819 return -ENODEV;
820 }
821
822 ci = cl->conn_info;
823
824 hci_dev_lock(hdev);
825 list_for_each_entry(c, &hdev->conn_hash.list, list) {
826 bacpy(&(ci + n)->bdaddr, &c->dst);
827 (ci + n)->handle = c->handle;
828 (ci + n)->type = c->type;
829 (ci + n)->out = c->out;
830 (ci + n)->state = c->state;
831 (ci + n)->link_mode = c->link_mode;
832 if (++n >= req.conn_num)
833 break;
834 }
835 hci_dev_unlock(hdev);
836
837 cl->dev_id = hdev->id;
838 cl->conn_num = n;
839 size = sizeof(req) + n * sizeof(*ci);
840
841 hci_dev_put(hdev);
842
843 err = copy_to_user(arg, cl, size);
844 kfree(cl);
845
846 return err ? -EFAULT : 0;
847}
848
849int hci_get_conn_info(struct hci_dev *hdev, void __user *arg)
850{
851 struct hci_conn_info_req req;
852 struct hci_conn_info ci;
853 struct hci_conn *conn;
854 char __user *ptr = arg + sizeof(req);
855
856 if (copy_from_user(&req, arg, sizeof(req)))
857 return -EFAULT;
858
859 hci_dev_lock(hdev);
860 conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr);
861 if (conn) {
862 bacpy(&ci.bdaddr, &conn->dst);
863 ci.handle = conn->handle;
864 ci.type = conn->type;
865 ci.out = conn->out;
866 ci.state = conn->state;
867 ci.link_mode = conn->link_mode;
868 }
869 hci_dev_unlock(hdev);
870
871 if (!conn)
872 return -ENOENT;
873
874 return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0;
875}
876
877int hci_get_auth_info(struct hci_dev *hdev, void __user *arg)
878{
879 struct hci_auth_info_req req;
880 struct hci_conn *conn;
881
882 if (copy_from_user(&req, arg, sizeof(req)))
883 return -EFAULT;
884
885 hci_dev_lock(hdev);
886 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr);
887 if (conn)
888 req.type = conn->auth_type;
889 hci_dev_unlock(hdev);
890
891 if (!conn)
892 return -ENOENT;
893
894 return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0;
895}
896
897struct hci_chan *hci_chan_create(struct hci_conn *conn)
898{
899 struct hci_dev *hdev = conn->hdev;
900 struct hci_chan *chan;
901
902 BT_DBG("%s hcon %p", hdev->name, conn);
903
904 chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL);
905 if (!chan)
906 return NULL;
907
908 chan->conn = conn;
909 skb_queue_head_init(&chan->data_q);
910
911 list_add_rcu(&chan->list, &conn->chan_list);
912
913 return chan;
914}
915
916int hci_chan_del(struct hci_chan *chan)
917{
918 struct hci_conn *conn = chan->conn;
919 struct hci_dev *hdev = conn->hdev;
920
921 BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan);
922
923 list_del_rcu(&chan->list);
924
925 synchronize_rcu();
926
927 skb_queue_purge(&chan->data_q);
928 kfree(chan);
929
930 return 0;
931}
932
933void hci_chan_list_flush(struct hci_conn *conn)
934{
935 struct hci_chan *chan, *n;
936
937 BT_DBG("hcon %p", conn);
938
939 list_for_each_entry_safe(chan, n, &conn->chan_list, list)
940 hci_chan_del(chan);
941}
942
