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[mirror_ubuntu-artful-kernel.git] / include / net / bluetooth / hci_core.h
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 #ifndef __HCI_CORE_H
26 #define __HCI_CORE_H
27
28 #include <net/bluetooth/hci.h>
29
30 /* HCI priority */
31 #define HCI_PRIO_MAX 7
32
33 /* HCI Core structures */
34 struct inquiry_data {
35 bdaddr_t bdaddr;
36 __u8 pscan_rep_mode;
37 __u8 pscan_period_mode;
38 __u8 pscan_mode;
39 __u8 dev_class[3];
40 __le16 clock_offset;
41 __s8 rssi;
42 __u8 ssp_mode;
43 };
44
45 struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
48 enum {
49 NAME_NOT_KNOWN,
50 NAME_NEEDED,
51 NAME_PENDING,
52 NAME_KNOWN,
53 } name_state;
54 __u32 timestamp;
55 struct inquiry_data data;
56 };
57
58 struct discovery_state {
59 int type;
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_FINDING,
64 DISCOVERY_RESOLVING,
65 DISCOVERY_STOPPING,
66 } state;
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
70 __u32 timestamp;
71 };
72
73 struct hci_conn_hash {
74 struct list_head list;
75 unsigned int acl_num;
76 unsigned int amp_num;
77 unsigned int sco_num;
78 unsigned int le_num;
79 };
80
81 struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84 };
85
86 struct bt_uuid {
87 struct list_head list;
88 u8 uuid[16];
89 u8 size;
90 u8 svc_hint;
91 };
92
93 struct smp_ltk {
94 struct list_head list;
95 bdaddr_t bdaddr;
96 u8 bdaddr_type;
97 u8 authenticated;
98 u8 type;
99 u8 enc_size;
100 __le16 ediv;
101 u8 rand[8];
102 u8 val[16];
103 } __packed;
104
105 struct link_key {
106 struct list_head list;
107 bdaddr_t bdaddr;
108 u8 type;
109 u8 val[HCI_LINK_KEY_SIZE];
110 u8 pin_len;
111 };
112
113 struct oob_data {
114 struct list_head list;
115 bdaddr_t bdaddr;
116 u8 hash[16];
117 u8 randomizer[16];
118 };
119
120 struct le_scan_params {
121 u8 type;
122 u16 interval;
123 u16 window;
124 int timeout;
125 };
126
127 #define HCI_MAX_SHORT_NAME_LENGTH 10
128
129 struct amp_assoc {
130 __u16 len;
131 __u16 offset;
132 __u16 rem_len;
133 __u16 len_so_far;
134 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
135 };
136
137 #define NUM_REASSEMBLY 4
138 struct hci_dev {
139 struct list_head list;
140 struct mutex lock;
141
142 char name[8];
143 unsigned long flags;
144 __u16 id;
145 __u8 bus;
146 __u8 dev_type;
147 bdaddr_t bdaddr;
148 __u8 dev_name[HCI_MAX_NAME_LENGTH];
149 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
150 __u8 eir[HCI_MAX_EIR_LENGTH];
151 __u8 dev_class[3];
152 __u8 major_class;
153 __u8 minor_class;
154 __u8 features[8];
155 __u8 host_features[8];
156 __u8 le_features[8];
157 __u8 le_white_list_size;
158 __u8 le_states[8];
159 __u8 commands[64];
160 __u8 hci_ver;
161 __u16 hci_rev;
162 __u8 lmp_ver;
163 __u16 manufacturer;
164 __u16 lmp_subver;
165 __u16 voice_setting;
166 __u8 io_capability;
167 __s8 inq_tx_power;
168 __u16 devid_source;
169 __u16 devid_vendor;
170 __u16 devid_product;
171 __u16 devid_version;
172
173 __u16 pkt_type;
174 __u16 esco_type;
175 __u16 link_policy;
176 __u16 link_mode;
177
178 __u32 idle_timeout;
179 __u16 sniff_min_interval;
180 __u16 sniff_max_interval;
181
182 __u8 amp_status;
183 __u32 amp_total_bw;
184 __u32 amp_max_bw;
185 __u32 amp_min_latency;
186 __u32 amp_max_pdu;
187 __u8 amp_type;
188 __u16 amp_pal_cap;
189 __u16 amp_assoc_size;
190 __u32 amp_max_flush_to;
191 __u32 amp_be_flush_to;
192
193 struct amp_assoc loc_assoc;
194
195 __u8 flow_ctl_mode;
196
197 unsigned int auto_accept_delay;
198
199 unsigned long quirks;
200
201 atomic_t cmd_cnt;
202 unsigned int acl_cnt;
203 unsigned int sco_cnt;
204 unsigned int le_cnt;
205
206 unsigned int acl_mtu;
207 unsigned int sco_mtu;
208 unsigned int le_mtu;
209 unsigned int acl_pkts;
210 unsigned int sco_pkts;
211 unsigned int le_pkts;
212
213 __u16 block_len;
214 __u16 block_mtu;
215 __u16 num_blocks;
216 __u16 block_cnt;
217
218 unsigned long acl_last_tx;
219 unsigned long sco_last_tx;
220 unsigned long le_last_tx;
221
222 struct workqueue_struct *workqueue;
223 struct workqueue_struct *req_workqueue;
224
225 struct work_struct power_on;
226 struct delayed_work power_off;
227
228 __u16 discov_timeout;
229 struct delayed_work discov_off;
230
231 struct delayed_work service_cache;
232
233 struct timer_list cmd_timer;
234
235 struct work_struct rx_work;
236 struct work_struct cmd_work;
237 struct work_struct tx_work;
238
239 struct sk_buff_head rx_q;
240 struct sk_buff_head raw_q;
241 struct sk_buff_head cmd_q;
242
243 struct sk_buff *sent_cmd;
244 struct sk_buff *reassembly[NUM_REASSEMBLY];
245
246 struct mutex req_lock;
247 wait_queue_head_t req_wait_q;
248 __u32 req_status;
249 __u32 req_result;
250
251 struct list_head mgmt_pending;
252
253 struct discovery_state discovery;
254 struct hci_conn_hash conn_hash;
255 struct list_head blacklist;
256
257 struct list_head uuids;
258
259 struct list_head link_keys;
260
261 struct list_head long_term_keys;
262
263 struct list_head remote_oob_data;
264
265 struct hci_dev_stats stat;
266
267 struct sk_buff_head driver_init;
268
269 atomic_t promisc;
270
271 struct dentry *debugfs;
272
273 struct device dev;
274
275 struct rfkill *rfkill;
276
277 unsigned long dev_flags;
278
279 struct delayed_work le_scan_disable;
280
281 struct work_struct le_scan;
282 struct le_scan_params le_scan_params;
283
284 __s8 adv_tx_power;
285 __u8 adv_data[HCI_MAX_AD_LENGTH];
286 __u8 adv_data_len;
287
288 int (*open)(struct hci_dev *hdev);
289 int (*close)(struct hci_dev *hdev);
290 int (*flush)(struct hci_dev *hdev);
291 int (*send)(struct sk_buff *skb);
292 void (*notify)(struct hci_dev *hdev, unsigned int evt);
293 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
294 };
295
296 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
297
298 struct hci_conn {
299 struct list_head list;
300
301 atomic_t refcnt;
302
303 bdaddr_t dst;
304 __u8 dst_type;
305 __u16 handle;
306 __u16 state;
307 __u8 mode;
308 __u8 type;
309 bool out;
310 __u8 attempt;
311 __u8 dev_class[3];
312 __u8 features[8];
313 __u16 interval;
314 __u16 pkt_type;
315 __u16 link_policy;
316 __u32 link_mode;
317 __u8 key_type;
318 __u8 auth_type;
319 __u8 sec_level;
320 __u8 pending_sec_level;
321 __u8 pin_length;
322 __u8 enc_key_size;
323 __u8 io_capability;
324 __u32 passkey_notify;
325 __u8 passkey_entered;
326 __u16 disc_timeout;
327 unsigned long flags;
328
329 __u8 remote_cap;
330 __u8 remote_auth;
331 __u8 remote_id;
332 bool flush_key;
333
334 unsigned int sent;
335
336 struct sk_buff_head data_q;
337 struct list_head chan_list;
338
339 struct delayed_work disc_work;
340 struct timer_list idle_timer;
341 struct timer_list auto_accept_timer;
342
343 struct device dev;
344 atomic_t devref;
345
346 struct hci_dev *hdev;
347 void *l2cap_data;
348 void *sco_data;
349 void *smp_conn;
350 struct amp_mgr *amp_mgr;
351
352 struct hci_conn *link;
353
354 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
355 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
356 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
357 };
358
359 struct hci_chan {
360 struct list_head list;
361 __u16 handle;
362 struct hci_conn *conn;
363 struct sk_buff_head data_q;
364 unsigned int sent;
365 __u8 state;
366 };
367
368 extern struct list_head hci_dev_list;
369 extern struct list_head hci_cb_list;
370 extern rwlock_t hci_dev_list_lock;
371 extern rwlock_t hci_cb_list_lock;
372
373 /* ----- HCI interface to upper protocols ----- */
374 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
375 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
376 extern int l2cap_disconn_ind(struct hci_conn *hcon);
377 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
378 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
379 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
380 u16 flags);
381
382 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
383 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
384 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
385 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
386
387 /* ----- Inquiry cache ----- */
388 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
389 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
390
391 static inline void discovery_init(struct hci_dev *hdev)
392 {
393 hdev->discovery.state = DISCOVERY_STOPPED;
394 INIT_LIST_HEAD(&hdev->discovery.all);
395 INIT_LIST_HEAD(&hdev->discovery.unknown);
396 INIT_LIST_HEAD(&hdev->discovery.resolve);
397 }
398
399 bool hci_discovery_active(struct hci_dev *hdev);
400
401 void hci_discovery_set_state(struct hci_dev *hdev, int state);
402
403 static inline int inquiry_cache_empty(struct hci_dev *hdev)
404 {
405 return list_empty(&hdev->discovery.all);
406 }
407
408 static inline long inquiry_cache_age(struct hci_dev *hdev)
409 {
410 struct discovery_state *c = &hdev->discovery;
411 return jiffies - c->timestamp;
412 }
413
414 static inline long inquiry_entry_age(struct inquiry_entry *e)
415 {
416 return jiffies - e->timestamp;
417 }
418
419 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
420 bdaddr_t *bdaddr);
421 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
422 bdaddr_t *bdaddr);
423 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
424 bdaddr_t *bdaddr,
425 int state);
426 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
427 struct inquiry_entry *ie);
428 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
429 bool name_known, bool *ssp);
430
431 /* ----- HCI Connections ----- */
432 enum {
433 HCI_CONN_AUTH_PEND,
434 HCI_CONN_REAUTH_PEND,
435 HCI_CONN_ENCRYPT_PEND,
436 HCI_CONN_RSWITCH_PEND,
437 HCI_CONN_MODE_CHANGE_PEND,
438 HCI_CONN_SCO_SETUP_PEND,
439 HCI_CONN_LE_SMP_PEND,
440 HCI_CONN_MGMT_CONNECTED,
441 HCI_CONN_SSP_ENABLED,
442 HCI_CONN_POWER_SAVE,
443 HCI_CONN_REMOTE_OOB,
444 };
445
446 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
447 {
448 struct hci_dev *hdev = conn->hdev;
449 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
450 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
451 }
452
453 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
454 {
455 struct hci_conn_hash *h = &hdev->conn_hash;
456 list_add_rcu(&c->list, &h->list);
457 switch (c->type) {
458 case ACL_LINK:
459 h->acl_num++;
460 break;
461 case AMP_LINK:
462 h->amp_num++;
463 break;
464 case LE_LINK:
465 h->le_num++;
466 break;
467 case SCO_LINK:
468 case ESCO_LINK:
469 h->sco_num++;
470 break;
471 }
472 }
473
474 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
475 {
476 struct hci_conn_hash *h = &hdev->conn_hash;
477
478 list_del_rcu(&c->list);
479 synchronize_rcu();
480
481 switch (c->type) {
482 case ACL_LINK:
483 h->acl_num--;
484 break;
485 case AMP_LINK:
486 h->amp_num--;
487 break;
488 case LE_LINK:
489 h->le_num--;
490 break;
491 case SCO_LINK:
492 case ESCO_LINK:
493 h->sco_num--;
494 break;
495 }
496 }
497
498 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
499 {
500 struct hci_conn_hash *h = &hdev->conn_hash;
501 switch (type) {
502 case ACL_LINK:
503 return h->acl_num;
504 case AMP_LINK:
505 return h->amp_num;
506 case LE_LINK:
507 return h->le_num;
508 case SCO_LINK:
509 case ESCO_LINK:
510 return h->sco_num;
511 default:
512 return 0;
513 }
514 }
515
516 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
517 __u16 handle)
518 {
519 struct hci_conn_hash *h = &hdev->conn_hash;
520 struct hci_conn *c;
521
522 rcu_read_lock();
523
524 list_for_each_entry_rcu(c, &h->list, list) {
525 if (c->handle == handle) {
526 rcu_read_unlock();
527 return c;
528 }
529 }
530 rcu_read_unlock();
531
532 return NULL;
533 }
534
535 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
536 __u8 type, bdaddr_t *ba)
537 {
538 struct hci_conn_hash *h = &hdev->conn_hash;
539 struct hci_conn *c;
540
541 rcu_read_lock();
542
543 list_for_each_entry_rcu(c, &h->list, list) {
544 if (c->type == type && !bacmp(&c->dst, ba)) {
545 rcu_read_unlock();
546 return c;
547 }
548 }
549
550 rcu_read_unlock();
551
552 return NULL;
553 }
554
555 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
556 __u8 type, __u16 state)
557 {
558 struct hci_conn_hash *h = &hdev->conn_hash;
559 struct hci_conn *c;
560
561 rcu_read_lock();
562
563 list_for_each_entry_rcu(c, &h->list, list) {
564 if (c->type == type && c->state == state) {
565 rcu_read_unlock();
566 return c;
567 }
568 }
569
570 rcu_read_unlock();
571
572 return NULL;
573 }
574
575 void hci_disconnect(struct hci_conn *conn, __u8 reason);
576 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
577 void hci_sco_setup(struct hci_conn *conn, __u8 status);
578
579 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
580 int hci_conn_del(struct hci_conn *conn);
581 void hci_conn_hash_flush(struct hci_dev *hdev);
582 void hci_conn_check_pending(struct hci_dev *hdev);
583 void hci_conn_accept(struct hci_conn *conn, int mask);
584
585 struct hci_chan *hci_chan_create(struct hci_conn *conn);
586 void hci_chan_del(struct hci_chan *chan);
587 void hci_chan_list_flush(struct hci_conn *conn);
588 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
589
590 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
591 __u8 dst_type, __u8 sec_level, __u8 auth_type);
592 int hci_conn_check_link_mode(struct hci_conn *conn);
593 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
594 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
595 int hci_conn_change_link_key(struct hci_conn *conn);
596 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
597
598 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
599
600 void hci_conn_hold_device(struct hci_conn *conn);
601 void hci_conn_put_device(struct hci_conn *conn);
602
603 static inline void hci_conn_hold(struct hci_conn *conn)
604 {
605 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
606
607 atomic_inc(&conn->refcnt);
608 cancel_delayed_work(&conn->disc_work);
609 }
610
611 static inline void hci_conn_put(struct hci_conn *conn)
612 {
613 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
614
615 if (atomic_dec_and_test(&conn->refcnt)) {
616 unsigned long timeo;
617
618 switch (conn->type) {
619 case ACL_LINK:
620 case LE_LINK:
621 del_timer(&conn->idle_timer);
622 if (conn->state == BT_CONNECTED) {
623 timeo = conn->disc_timeout;
624 if (!conn->out)
625 timeo *= 2;
626 } else {
627 timeo = msecs_to_jiffies(10);
628 }
629 break;
630
631 case AMP_LINK:
632 timeo = conn->disc_timeout;
633 break;
634
635 default:
636 timeo = msecs_to_jiffies(10);
637 break;
638 }
639
640 cancel_delayed_work(&conn->disc_work);
641 queue_delayed_work(conn->hdev->workqueue,
642 &conn->disc_work, timeo);
643 }
644 }
645
646 /* ----- HCI Devices ----- */
647 static inline void hci_dev_put(struct hci_dev *d)
648 {
649 BT_DBG("%s orig refcnt %d", d->name,
650 atomic_read(&d->dev.kobj.kref.refcount));
651
652 put_device(&d->dev);
653 }
654
655 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
656 {
657 BT_DBG("%s orig refcnt %d", d->name,
658 atomic_read(&d->dev.kobj.kref.refcount));
659
660 get_device(&d->dev);
661 return d;
662 }
663
664 #define hci_dev_lock(d) mutex_lock(&d->lock)
665 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
666
667 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
668 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
669
670 static inline void *hci_get_drvdata(struct hci_dev *hdev)
671 {
672 return dev_get_drvdata(&hdev->dev);
673 }
674
675 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
676 {
677 dev_set_drvdata(&hdev->dev, data);
678 }
679
680 /* hci_dev_list shall be locked */
681 static inline uint8_t __hci_num_ctrl(void)
682 {
683 uint8_t count = 0;
684 struct list_head *p;
685
686 list_for_each(p, &hci_dev_list) {
687 count++;
688 }
689
690 return count;
691 }
692
693 struct hci_dev *hci_dev_get(int index);
694 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
695
696 struct hci_dev *hci_alloc_dev(void);
697 void hci_free_dev(struct hci_dev *hdev);
698 int hci_register_dev(struct hci_dev *hdev);
699 void hci_unregister_dev(struct hci_dev *hdev);
700 int hci_suspend_dev(struct hci_dev *hdev);
701 int hci_resume_dev(struct hci_dev *hdev);
702 int hci_dev_open(__u16 dev);
703 int hci_dev_close(__u16 dev);
704 int hci_dev_reset(__u16 dev);
705 int hci_dev_reset_stat(__u16 dev);
706 int hci_dev_cmd(unsigned int cmd, void __user *arg);
707 int hci_get_dev_list(void __user *arg);
708 int hci_get_dev_info(void __user *arg);
709 int hci_get_conn_list(void __user *arg);
710 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
711 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
712 int hci_inquiry(void __user *arg);
713
714 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
715 bdaddr_t *bdaddr);
716 int hci_blacklist_clear(struct hci_dev *hdev);
717 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
718 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
719
720 int hci_uuids_clear(struct hci_dev *hdev);
721
722 int hci_link_keys_clear(struct hci_dev *hdev);
723 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
724 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
725 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
726 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
727 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
728 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
729 __le16 ediv, u8 rand[8]);
730 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
731 u8 addr_type);
732 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
733 int hci_smp_ltks_clear(struct hci_dev *hdev);
734 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
735
736 int hci_remote_oob_data_clear(struct hci_dev *hdev);
737 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
738 bdaddr_t *bdaddr);
739 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
740 u8 *randomizer);
741 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
742
743 int hci_update_ad(struct hci_dev *hdev);
744
745 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
746
747 int hci_recv_frame(struct sk_buff *skb);
748 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
749 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
750
751 void hci_init_sysfs(struct hci_dev *hdev);
752 int hci_add_sysfs(struct hci_dev *hdev);
753 void hci_del_sysfs(struct hci_dev *hdev);
754 void hci_conn_init_sysfs(struct hci_conn *conn);
755 void hci_conn_add_sysfs(struct hci_conn *conn);
756 void hci_conn_del_sysfs(struct hci_conn *conn);
757
758 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
759
760 /* ----- LMP capabilities ----- */
761 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
762 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
763 #define lmp_hold_capable(dev) ((dev)->features[0] & LMP_HOLD)
764 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
765 #define lmp_park_capable(dev) ((dev)->features[1] & LMP_PARK)
766 #define lmp_inq_rssi_capable(dev) ((dev)->features[3] & LMP_RSSI_INQ)
767 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
768 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
769 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
770 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
771 #define lmp_pause_enc_capable(dev) ((dev)->features[5] & LMP_PAUSE_ENC)
772 #define lmp_ext_inq_capable(dev) ((dev)->features[6] & LMP_EXT_INQ)
773 #define lmp_le_br_capable(dev) !!((dev)->features[6] & LMP_SIMUL_LE_BR)
774 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
775 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
776 #define lmp_lsto_capable(dev) ((dev)->features[7] & LMP_LSTO)
777 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[7] & LMP_INQ_TX_PWR)
778 #define lmp_ext_feat_capable(dev) ((dev)->features[7] & LMP_EXTFEATURES)
779
780 /* ----- Extended LMP capabilities ----- */
781 #define lmp_host_ssp_capable(dev) ((dev)->host_features[0] & LMP_HOST_SSP)
782 #define lmp_host_le_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE)
783 #define lmp_host_le_br_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE_BREDR)
784
785 /* returns true if at least one AMP active */
786 static inline bool hci_amp_capable(void)
787 {
788 struct hci_dev *hdev;
789 bool ret = false;
790
791 read_lock(&hci_dev_list_lock);
792 list_for_each_entry(hdev, &hci_dev_list, list)
793 if (hdev->amp_type == HCI_AMP &&
794 test_bit(HCI_UP, &hdev->flags))
795 ret = true;
796 read_unlock(&hci_dev_list_lock);
797
798 return ret;
799 }
800
801 /* ----- HCI protocols ----- */
802 #define HCI_PROTO_DEFER 0x01
803
804 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
805 __u8 type, __u8 *flags)
806 {
807 switch (type) {
808 case ACL_LINK:
809 return l2cap_connect_ind(hdev, bdaddr);
810
811 case SCO_LINK:
812 case ESCO_LINK:
813 return sco_connect_ind(hdev, bdaddr, flags);
814
815 default:
816 BT_ERR("unknown link type %d", type);
817 return -EINVAL;
818 }
819 }
820
821 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
822 {
823 switch (conn->type) {
824 case ACL_LINK:
825 case LE_LINK:
826 l2cap_connect_cfm(conn, status);
827 break;
828
829 case SCO_LINK:
830 case ESCO_LINK:
831 sco_connect_cfm(conn, status);
832 break;
833
834 default:
835 BT_ERR("unknown link type %d", conn->type);
836 break;
837 }
838
839 if (conn->connect_cfm_cb)
840 conn->connect_cfm_cb(conn, status);
841 }
842
843 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
844 {
845 if (conn->type != ACL_LINK && conn->type != LE_LINK)
846 return HCI_ERROR_REMOTE_USER_TERM;
847
848 return l2cap_disconn_ind(conn);
849 }
850
851 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
852 {
853 switch (conn->type) {
854 case ACL_LINK:
855 case LE_LINK:
856 l2cap_disconn_cfm(conn, reason);
857 break;
858
859 case SCO_LINK:
860 case ESCO_LINK:
861 sco_disconn_cfm(conn, reason);
862 break;
863
864 /* L2CAP would be handled for BREDR chan */
865 case AMP_LINK:
866 break;
867
868 default:
869 BT_ERR("unknown link type %d", conn->type);
870 break;
871 }
872
873 if (conn->disconn_cfm_cb)
874 conn->disconn_cfm_cb(conn, reason);
875 }
876
877 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
878 {
879 __u8 encrypt;
880
881 if (conn->type != ACL_LINK && conn->type != LE_LINK)
882 return;
883
884 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
885 return;
886
887 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
888 l2cap_security_cfm(conn, status, encrypt);
889
890 if (conn->security_cfm_cb)
891 conn->security_cfm_cb(conn, status);
892 }
893
894 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
895 __u8 encrypt)
896 {
897 if (conn->type != ACL_LINK && conn->type != LE_LINK)
898 return;
899
900 l2cap_security_cfm(conn, status, encrypt);
901
902 if (conn->security_cfm_cb)
903 conn->security_cfm_cb(conn, status);
904 }
905
906 /* ----- HCI callbacks ----- */
907 struct hci_cb {
908 struct list_head list;
909
910 char *name;
911
912 void (*security_cfm) (struct hci_conn *conn, __u8 status,
913 __u8 encrypt);
914 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
915 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
916 };
917
918 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
919 {
920 struct hci_cb *cb;
921 __u8 encrypt;
922
923 hci_proto_auth_cfm(conn, status);
924
925 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
926 return;
927
928 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
929
930 read_lock(&hci_cb_list_lock);
931 list_for_each_entry(cb, &hci_cb_list, list) {
932 if (cb->security_cfm)
933 cb->security_cfm(conn, status, encrypt);
934 }
935 read_unlock(&hci_cb_list_lock);
936 }
937
938 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
939 __u8 encrypt)
940 {
941 struct hci_cb *cb;
942
943 if (conn->sec_level == BT_SECURITY_SDP)
944 conn->sec_level = BT_SECURITY_LOW;
945
946 if (conn->pending_sec_level > conn->sec_level)
947 conn->sec_level = conn->pending_sec_level;
948
949 hci_proto_encrypt_cfm(conn, status, encrypt);
950
951 read_lock(&hci_cb_list_lock);
952 list_for_each_entry(cb, &hci_cb_list, list) {
953 if (cb->security_cfm)
954 cb->security_cfm(conn, status, encrypt);
955 }
956 read_unlock(&hci_cb_list_lock);
957 }
958
959 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
960 {
961 struct hci_cb *cb;
962
963 read_lock(&hci_cb_list_lock);
964 list_for_each_entry(cb, &hci_cb_list, list) {
965 if (cb->key_change_cfm)
966 cb->key_change_cfm(conn, status);
967 }
968 read_unlock(&hci_cb_list_lock);
969 }
970
971 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
972 __u8 role)
973 {
974 struct hci_cb *cb;
975
976 read_lock(&hci_cb_list_lock);
977 list_for_each_entry(cb, &hci_cb_list, list) {
978 if (cb->role_switch_cfm)
979 cb->role_switch_cfm(conn, status, role);
980 }
981 read_unlock(&hci_cb_list_lock);
982 }
983
984 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
985 {
986 size_t parsed = 0;
987
988 if (data_len < 2)
989 return false;
990
991 while (parsed < data_len - 1) {
992 u8 field_len = data[0];
993
994 if (field_len == 0)
995 break;
996
997 parsed += field_len + 1;
998
999 if (parsed > data_len)
1000 break;
1001
1002 if (data[1] == type)
1003 return true;
1004
1005 data += field_len + 1;
1006 }
1007
1008 return false;
1009 }
1010
1011 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1012 {
1013 size_t parsed = 0;
1014
1015 while (parsed < eir_len) {
1016 u8 field_len = eir[0];
1017
1018 if (field_len == 0)
1019 return parsed;
1020
1021 parsed += field_len + 1;
1022 eir += field_len + 1;
1023 }
1024
1025 return eir_len;
1026 }
1027
1028 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1029 u8 data_len)
1030 {
1031 eir[eir_len++] = sizeof(type) + data_len;
1032 eir[eir_len++] = type;
1033 memcpy(&eir[eir_len], data, data_len);
1034 eir_len += data_len;
1035
1036 return eir_len;
1037 }
1038
1039 int hci_register_cb(struct hci_cb *hcb);
1040 int hci_unregister_cb(struct hci_cb *hcb);
1041
1042 struct hci_request {
1043 struct hci_dev *hdev;
1044 struct sk_buff_head cmd_q;
1045 };
1046
1047 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1048 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1049 int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param);
1050 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1051 void hci_req_cmd_status(struct hci_dev *hdev, u16 opcode, u8 status);
1052
1053 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
1054 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1055 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1056
1057 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1058
1059 /* ----- HCI Sockets ----- */
1060 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1061 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1062 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1063
1064 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1065
1066 /* Management interface */
1067 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1068 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1069 BIT(BDADDR_LE_RANDOM))
1070 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1071 BIT(BDADDR_LE_PUBLIC) | \
1072 BIT(BDADDR_LE_RANDOM))
1073
1074 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1075 int mgmt_index_added(struct hci_dev *hdev);
1076 int mgmt_index_removed(struct hci_dev *hdev);
1077 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1078 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1079 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1080 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1081 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1082 bool persistent);
1083 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1084 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1085 u8 *dev_class);
1086 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1087 u8 link_type, u8 addr_type, u8 reason);
1088 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1089 u8 link_type, u8 addr_type, u8 status);
1090 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1091 u8 addr_type, u8 status);
1092 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1093 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 status);
1095 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 u8 status);
1097 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1098 u8 link_type, u8 addr_type, __le32 value,
1099 u8 confirm_hint);
1100 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1101 u8 link_type, u8 addr_type, u8 status);
1102 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1103 u8 link_type, u8 addr_type, u8 status);
1104 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1105 u8 link_type, u8 addr_type);
1106 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1107 u8 link_type, u8 addr_type, u8 status);
1108 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109 u8 link_type, u8 addr_type, u8 status);
1110 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111 u8 link_type, u8 addr_type, u32 passkey,
1112 u8 entered);
1113 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1114 u8 addr_type, u8 status);
1115 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1116 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1117 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1118 u8 status);
1119 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1120 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1121 u8 *randomizer, u8 status);
1122 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1123 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1124 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1125 u8 ssp, u8 *eir, u16 eir_len);
1126 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1127 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1128 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1129 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1130 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1131 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1132 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1133 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1134 bool mgmt_valid_hdev(struct hci_dev *hdev);
1135 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1136
1137 /* HCI info for socket */
1138 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1139
1140 struct hci_pinfo {
1141 struct bt_sock bt;
1142 struct hci_dev *hdev;
1143 struct hci_filter filter;
1144 __u32 cmsg_mask;
1145 unsigned short channel;
1146 };
1147
1148 /* HCI security filter */
1149 #define HCI_SFLT_MAX_OGF 5
1150
1151 struct hci_sec_filter {
1152 __u32 type_mask;
1153 __u32 event_mask[2];
1154 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1155 };
1156
1157 /* ----- HCI requests ----- */
1158 #define HCI_REQ_DONE 0
1159 #define HCI_REQ_PEND 1
1160 #define HCI_REQ_CANCELED 2
1161
1162 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1163 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1164
1165 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1166 u16 latency, u16 to_multiplier);
1167 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1168 __u8 ltk[16]);
1169 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1170 int hci_cancel_inquiry(struct hci_dev *hdev);
1171 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1172 int timeout);
1173 int hci_cancel_le_scan(struct hci_dev *hdev);
1174
1175 u8 bdaddr_to_le(u8 bdaddr_type);
1176
1177 #endif /* __HCI_CORE_H */
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