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Bluetooth: Use separate function for BCM92035 vendor setup
[mirror_ubuntu-bionic-kernel.git] / include / net / bluetooth / hci_core.h
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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 */
34struct 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
45struct 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
58struct 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
73struct 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
81struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84};
85
86struct bt_uuid {
87 struct list_head list;
88 u8 uuid[16];
89 u8 size;
90 u8 svc_hint;
91};
92
93struct 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
105struct 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
113struct oob_data {
114 struct list_head list;
115 bdaddr_t bdaddr;
116 u8 hash[16];
117 u8 randomizer[16];
118};
119
120struct 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
129struct 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
138struct 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 page_scan_interval;
169 __u16 page_scan_window;
170 __u8 page_scan_type;
171
172 __u16 devid_source;
173 __u16 devid_vendor;
174 __u16 devid_product;
175 __u16 devid_version;
176
177 __u16 pkt_type;
178 __u16 esco_type;
179 __u16 link_policy;
180 __u16 link_mode;
181
182 __u32 idle_timeout;
183 __u16 sniff_min_interval;
184 __u16 sniff_max_interval;
185
186 __u8 amp_status;
187 __u32 amp_total_bw;
188 __u32 amp_max_bw;
189 __u32 amp_min_latency;
190 __u32 amp_max_pdu;
191 __u8 amp_type;
192 __u16 amp_pal_cap;
193 __u16 amp_assoc_size;
194 __u32 amp_max_flush_to;
195 __u32 amp_be_flush_to;
196
197 struct amp_assoc loc_assoc;
198
199 __u8 flow_ctl_mode;
200
201 unsigned int auto_accept_delay;
202
203 unsigned long quirks;
204
205 atomic_t cmd_cnt;
206 unsigned int acl_cnt;
207 unsigned int sco_cnt;
208 unsigned int le_cnt;
209
210 unsigned int acl_mtu;
211 unsigned int sco_mtu;
212 unsigned int le_mtu;
213 unsigned int acl_pkts;
214 unsigned int sco_pkts;
215 unsigned int le_pkts;
216
217 __u16 block_len;
218 __u16 block_mtu;
219 __u16 num_blocks;
220 __u16 block_cnt;
221
222 unsigned long acl_last_tx;
223 unsigned long sco_last_tx;
224 unsigned long le_last_tx;
225
226 struct workqueue_struct *workqueue;
227 struct workqueue_struct *req_workqueue;
228
229 struct work_struct power_on;
230 struct delayed_work power_off;
231
232 __u16 discov_timeout;
233 struct delayed_work discov_off;
234
235 struct delayed_work service_cache;
236
237 struct timer_list cmd_timer;
238
239 struct work_struct rx_work;
240 struct work_struct cmd_work;
241 struct work_struct tx_work;
242
243 struct sk_buff_head rx_q;
244 struct sk_buff_head raw_q;
245 struct sk_buff_head cmd_q;
246
247 struct sk_buff *recv_evt;
248 struct sk_buff *sent_cmd;
249 struct sk_buff *reassembly[NUM_REASSEMBLY];
250
251 struct mutex req_lock;
252 wait_queue_head_t req_wait_q;
253 __u32 req_status;
254 __u32 req_result;
255
256 struct list_head mgmt_pending;
257
258 struct discovery_state discovery;
259 struct hci_conn_hash conn_hash;
260 struct list_head blacklist;
261
262 struct list_head uuids;
263
264 struct list_head link_keys;
265
266 struct list_head long_term_keys;
267
268 struct list_head remote_oob_data;
269
270 struct hci_dev_stats stat;
271
272 atomic_t promisc;
273
274 struct dentry *debugfs;
275
276 struct device dev;
277
278 struct rfkill *rfkill;
279
280 unsigned long dev_flags;
281
282 struct delayed_work le_scan_disable;
283
284 struct work_struct le_scan;
285 struct le_scan_params le_scan_params;
286
287 __s8 adv_tx_power;
288 __u8 adv_data[HCI_MAX_AD_LENGTH];
289 __u8 adv_data_len;
290
291 int (*open)(struct hci_dev *hdev);
292 int (*close)(struct hci_dev *hdev);
293 int (*flush)(struct hci_dev *hdev);
294 int (*setup)(struct hci_dev *hdev);
295 int (*send)(struct sk_buff *skb);
296 void (*notify)(struct hci_dev *hdev, unsigned int evt);
297 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
298};
299
300#define HCI_PHY_HANDLE(handle) (handle & 0xff)
301
302struct hci_conn {
303 struct list_head list;
304
305 atomic_t refcnt;
306
307 bdaddr_t dst;
308 __u8 dst_type;
309 __u16 handle;
310 __u16 state;
311 __u8 mode;
312 __u8 type;
313 bool out;
314 __u8 attempt;
315 __u8 dev_class[3];
316 __u8 features[8];
317 __u16 interval;
318 __u16 pkt_type;
319 __u16 link_policy;
320 __u32 link_mode;
321 __u8 key_type;
322 __u8 auth_type;
323 __u8 sec_level;
324 __u8 pending_sec_level;
325 __u8 pin_length;
326 __u8 enc_key_size;
327 __u8 io_capability;
328 __u32 passkey_notify;
329 __u8 passkey_entered;
330 __u16 disc_timeout;
331 unsigned long flags;
332
333 __u8 remote_cap;
334 __u8 remote_auth;
335 __u8 remote_id;
336 bool flush_key;
337
338 unsigned int sent;
339
340 struct sk_buff_head data_q;
341 struct list_head chan_list;
342
343 struct delayed_work disc_work;
344 struct timer_list idle_timer;
345 struct timer_list auto_accept_timer;
346
347 struct device dev;
348 atomic_t devref;
349
350 struct hci_dev *hdev;
351 void *l2cap_data;
352 void *sco_data;
353 void *smp_conn;
354 struct amp_mgr *amp_mgr;
355
356 struct hci_conn *link;
357
358 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
359 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
360 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
361};
362
363struct hci_chan {
364 struct list_head list;
365 __u16 handle;
366 struct hci_conn *conn;
367 struct sk_buff_head data_q;
368 unsigned int sent;
369 __u8 state;
370};
371
372extern struct list_head hci_dev_list;
373extern struct list_head hci_cb_list;
374extern rwlock_t hci_dev_list_lock;
375extern rwlock_t hci_cb_list_lock;
376
377/* ----- HCI interface to upper protocols ----- */
378extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
379extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
380extern int l2cap_disconn_ind(struct hci_conn *hcon);
381extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
382extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
383extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
384 u16 flags);
385
386extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
387extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
388extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
389extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
390
391/* ----- Inquiry cache ----- */
392#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
393#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
394
395static inline void discovery_init(struct hci_dev *hdev)
396{
397 hdev->discovery.state = DISCOVERY_STOPPED;
398 INIT_LIST_HEAD(&hdev->discovery.all);
399 INIT_LIST_HEAD(&hdev->discovery.unknown);
400 INIT_LIST_HEAD(&hdev->discovery.resolve);
401}
402
403bool hci_discovery_active(struct hci_dev *hdev);
404
405void hci_discovery_set_state(struct hci_dev *hdev, int state);
406
407static inline int inquiry_cache_empty(struct hci_dev *hdev)
408{
409 return list_empty(&hdev->discovery.all);
410}
411
412static inline long inquiry_cache_age(struct hci_dev *hdev)
413{
414 struct discovery_state *c = &hdev->discovery;
415 return jiffies - c->timestamp;
416}
417
418static inline long inquiry_entry_age(struct inquiry_entry *e)
419{
420 return jiffies - e->timestamp;
421}
422
423struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
424 bdaddr_t *bdaddr);
425struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
426 bdaddr_t *bdaddr);
427struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
428 bdaddr_t *bdaddr,
429 int state);
430void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
431 struct inquiry_entry *ie);
432bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
433 bool name_known, bool *ssp);
434
435/* ----- HCI Connections ----- */
436enum {
437 HCI_CONN_AUTH_PEND,
438 HCI_CONN_REAUTH_PEND,
439 HCI_CONN_ENCRYPT_PEND,
440 HCI_CONN_RSWITCH_PEND,
441 HCI_CONN_MODE_CHANGE_PEND,
442 HCI_CONN_SCO_SETUP_PEND,
443 HCI_CONN_LE_SMP_PEND,
444 HCI_CONN_MGMT_CONNECTED,
445 HCI_CONN_SSP_ENABLED,
446 HCI_CONN_POWER_SAVE,
447 HCI_CONN_REMOTE_OOB,
448};
449
450static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
451{
452 struct hci_dev *hdev = conn->hdev;
453 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
454 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
455}
456
457static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
458{
459 struct hci_conn_hash *h = &hdev->conn_hash;
460 list_add_rcu(&c->list, &h->list);
461 switch (c->type) {
462 case ACL_LINK:
463 h->acl_num++;
464 break;
465 case AMP_LINK:
466 h->amp_num++;
467 break;
468 case LE_LINK:
469 h->le_num++;
470 break;
471 case SCO_LINK:
472 case ESCO_LINK:
473 h->sco_num++;
474 break;
475 }
476}
477
478static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
479{
480 struct hci_conn_hash *h = &hdev->conn_hash;
481
482 list_del_rcu(&c->list);
483 synchronize_rcu();
484
485 switch (c->type) {
486 case ACL_LINK:
487 h->acl_num--;
488 break;
489 case AMP_LINK:
490 h->amp_num--;
491 break;
492 case LE_LINK:
493 h->le_num--;
494 break;
495 case SCO_LINK:
496 case ESCO_LINK:
497 h->sco_num--;
498 break;
499 }
500}
501
502static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
503{
504 struct hci_conn_hash *h = &hdev->conn_hash;
505 switch (type) {
506 case ACL_LINK:
507 return h->acl_num;
508 case AMP_LINK:
509 return h->amp_num;
510 case LE_LINK:
511 return h->le_num;
512 case SCO_LINK:
513 case ESCO_LINK:
514 return h->sco_num;
515 default:
516 return 0;
517 }
518}
519
520static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
521 __u16 handle)
522{
523 struct hci_conn_hash *h = &hdev->conn_hash;
524 struct hci_conn *c;
525
526 rcu_read_lock();
527
528 list_for_each_entry_rcu(c, &h->list, list) {
529 if (c->handle == handle) {
530 rcu_read_unlock();
531 return c;
532 }
533 }
534 rcu_read_unlock();
535
536 return NULL;
537}
538
539static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
540 __u8 type, bdaddr_t *ba)
541{
542 struct hci_conn_hash *h = &hdev->conn_hash;
543 struct hci_conn *c;
544
545 rcu_read_lock();
546
547 list_for_each_entry_rcu(c, &h->list, list) {
548 if (c->type == type && !bacmp(&c->dst, ba)) {
549 rcu_read_unlock();
550 return c;
551 }
552 }
553
554 rcu_read_unlock();
555
556 return NULL;
557}
558
559static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
560 __u8 type, __u16 state)
561{
562 struct hci_conn_hash *h = &hdev->conn_hash;
563 struct hci_conn *c;
564
565 rcu_read_lock();
566
567 list_for_each_entry_rcu(c, &h->list, list) {
568 if (c->type == type && c->state == state) {
569 rcu_read_unlock();
570 return c;
571 }
572 }
573
574 rcu_read_unlock();
575
576 return NULL;
577}
578
579void hci_disconnect(struct hci_conn *conn, __u8 reason);
580void hci_setup_sync(struct hci_conn *conn, __u16 handle);
581void hci_sco_setup(struct hci_conn *conn, __u8 status);
582
583struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
584int hci_conn_del(struct hci_conn *conn);
585void hci_conn_hash_flush(struct hci_dev *hdev);
586void hci_conn_check_pending(struct hci_dev *hdev);
587void hci_conn_accept(struct hci_conn *conn, int mask);
588
589struct hci_chan *hci_chan_create(struct hci_conn *conn);
590void hci_chan_del(struct hci_chan *chan);
591void hci_chan_list_flush(struct hci_conn *conn);
592struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
593
594struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
595 __u8 dst_type, __u8 sec_level, __u8 auth_type);
596int hci_conn_check_link_mode(struct hci_conn *conn);
597int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
598int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
599int hci_conn_change_link_key(struct hci_conn *conn);
600int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
601
602void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
603
604void hci_conn_hold_device(struct hci_conn *conn);
605void hci_conn_put_device(struct hci_conn *conn);
606
607static inline void hci_conn_hold(struct hci_conn *conn)
608{
609 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
610
611 atomic_inc(&conn->refcnt);
612 cancel_delayed_work(&conn->disc_work);
613}
614
615static inline void hci_conn_put(struct hci_conn *conn)
616{
617 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
618
619 if (atomic_dec_and_test(&conn->refcnt)) {
620 unsigned long timeo;
621
622 switch (conn->type) {
623 case ACL_LINK:
624 case LE_LINK:
625 del_timer(&conn->idle_timer);
626 if (conn->state == BT_CONNECTED) {
627 timeo = conn->disc_timeout;
628 if (!conn->out)
629 timeo *= 2;
630 } else {
631 timeo = msecs_to_jiffies(10);
632 }
633 break;
634
635 case AMP_LINK:
636 timeo = conn->disc_timeout;
637 break;
638
639 default:
640 timeo = msecs_to_jiffies(10);
641 break;
642 }
643
644 cancel_delayed_work(&conn->disc_work);
645 queue_delayed_work(conn->hdev->workqueue,
646 &conn->disc_work, timeo);
647 }
648}
649
650/* ----- HCI Devices ----- */
651static inline void hci_dev_put(struct hci_dev *d)
652{
653 BT_DBG("%s orig refcnt %d", d->name,
654 atomic_read(&d->dev.kobj.kref.refcount));
655
656 put_device(&d->dev);
657}
658
659static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
660{
661 BT_DBG("%s orig refcnt %d", d->name,
662 atomic_read(&d->dev.kobj.kref.refcount));
663
664 get_device(&d->dev);
665 return d;
666}
667
668#define hci_dev_lock(d) mutex_lock(&d->lock)
669#define hci_dev_unlock(d) mutex_unlock(&d->lock)
670
671#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
672#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
673
674static inline void *hci_get_drvdata(struct hci_dev *hdev)
675{
676 return dev_get_drvdata(&hdev->dev);
677}
678
679static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
680{
681 dev_set_drvdata(&hdev->dev, data);
682}
683
684/* hci_dev_list shall be locked */
685static inline uint8_t __hci_num_ctrl(void)
686{
687 uint8_t count = 0;
688 struct list_head *p;
689
690 list_for_each(p, &hci_dev_list) {
691 count++;
692 }
693
694 return count;
695}
696
697struct hci_dev *hci_dev_get(int index);
698struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
699
700struct hci_dev *hci_alloc_dev(void);
701void hci_free_dev(struct hci_dev *hdev);
702int hci_register_dev(struct hci_dev *hdev);
703void hci_unregister_dev(struct hci_dev *hdev);
704int hci_suspend_dev(struct hci_dev *hdev);
705int hci_resume_dev(struct hci_dev *hdev);
706int hci_dev_open(__u16 dev);
707int hci_dev_close(__u16 dev);
708int hci_dev_reset(__u16 dev);
709int hci_dev_reset_stat(__u16 dev);
710int hci_dev_cmd(unsigned int cmd, void __user *arg);
711int hci_get_dev_list(void __user *arg);
712int hci_get_dev_info(void __user *arg);
713int hci_get_conn_list(void __user *arg);
714int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
715int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
716int hci_inquiry(void __user *arg);
717
718struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
719 bdaddr_t *bdaddr);
720int hci_blacklist_clear(struct hci_dev *hdev);
721int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
722int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
723
724int hci_uuids_clear(struct hci_dev *hdev);
725
726int hci_link_keys_clear(struct hci_dev *hdev);
727struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
728int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
729 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
730struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
731int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
732 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
733 __le16 ediv, u8 rand[8]);
734struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
735 u8 addr_type);
736int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
737int hci_smp_ltks_clear(struct hci_dev *hdev);
738int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
739
740int hci_remote_oob_data_clear(struct hci_dev *hdev);
741struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
742 bdaddr_t *bdaddr);
743int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
744 u8 *randomizer);
745int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
746
747void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
748
749int hci_recv_frame(struct sk_buff *skb);
750int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
751int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
752
753void hci_init_sysfs(struct hci_dev *hdev);
754int hci_add_sysfs(struct hci_dev *hdev);
755void hci_del_sysfs(struct hci_dev *hdev);
756void hci_conn_init_sysfs(struct hci_conn *conn);
757void hci_conn_add_sysfs(struct hci_conn *conn);
758void hci_conn_del_sysfs(struct hci_conn *conn);
759
760#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
761
762/* ----- LMP capabilities ----- */
763#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
764#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
765#define lmp_hold_capable(dev) ((dev)->features[0] & LMP_HOLD)
766#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
767#define lmp_park_capable(dev) ((dev)->features[1] & LMP_PARK)
768#define lmp_inq_rssi_capable(dev) ((dev)->features[3] & LMP_RSSI_INQ)
769#define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
770#define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
771#define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
772#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
773#define lmp_pause_enc_capable(dev) ((dev)->features[5] & LMP_PAUSE_ENC)
774#define lmp_ext_inq_capable(dev) ((dev)->features[6] & LMP_EXT_INQ)
775#define lmp_le_br_capable(dev) !!((dev)->features[6] & LMP_SIMUL_LE_BR)
776#define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
777#define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
778#define lmp_lsto_capable(dev) ((dev)->features[7] & LMP_LSTO)
779#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[7] & LMP_INQ_TX_PWR)
780#define lmp_ext_feat_capable(dev) ((dev)->features[7] & LMP_EXTFEATURES)
781
782/* ----- Extended LMP capabilities ----- */
783#define lmp_host_ssp_capable(dev) ((dev)->host_features[0] & LMP_HOST_SSP)
784#define lmp_host_le_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE)
785#define lmp_host_le_br_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE_BREDR)
786
787/* returns true if at least one AMP active */
788static inline bool hci_amp_capable(void)
789{
790 struct hci_dev *hdev;
791 bool ret = false;
792
793 read_lock(&hci_dev_list_lock);
794 list_for_each_entry(hdev, &hci_dev_list, list)
795 if (hdev->amp_type == HCI_AMP &&
796 test_bit(HCI_UP, &hdev->flags))
797 ret = true;
798 read_unlock(&hci_dev_list_lock);
799
800 return ret;
801}
802
803/* ----- HCI protocols ----- */
804#define HCI_PROTO_DEFER 0x01
805
806static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
807 __u8 type, __u8 *flags)
808{
809 switch (type) {
810 case ACL_LINK:
811 return l2cap_connect_ind(hdev, bdaddr);
812
813 case SCO_LINK:
814 case ESCO_LINK:
815 return sco_connect_ind(hdev, bdaddr, flags);
816
817 default:
818 BT_ERR("unknown link type %d", type);
819 return -EINVAL;
820 }
821}
822
823static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
824{
825 switch (conn->type) {
826 case ACL_LINK:
827 case LE_LINK:
828 l2cap_connect_cfm(conn, status);
829 break;
830
831 case SCO_LINK:
832 case ESCO_LINK:
833 sco_connect_cfm(conn, status);
834 break;
835
836 default:
837 BT_ERR("unknown link type %d", conn->type);
838 break;
839 }
840
841 if (conn->connect_cfm_cb)
842 conn->connect_cfm_cb(conn, status);
843}
844
845static inline int hci_proto_disconn_ind(struct hci_conn *conn)
846{
847 if (conn->type != ACL_LINK && conn->type != LE_LINK)
848 return HCI_ERROR_REMOTE_USER_TERM;
849
850 return l2cap_disconn_ind(conn);
851}
852
853static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
854{
855 switch (conn->type) {
856 case ACL_LINK:
857 case LE_LINK:
858 l2cap_disconn_cfm(conn, reason);
859 break;
860
861 case SCO_LINK:
862 case ESCO_LINK:
863 sco_disconn_cfm(conn, reason);
864 break;
865
866 /* L2CAP would be handled for BREDR chan */
867 case AMP_LINK:
868 break;
869
870 default:
871 BT_ERR("unknown link type %d", conn->type);
872 break;
873 }
874
875 if (conn->disconn_cfm_cb)
876 conn->disconn_cfm_cb(conn, reason);
877}
878
879static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
880{
881 __u8 encrypt;
882
883 if (conn->type != ACL_LINK && conn->type != LE_LINK)
884 return;
885
886 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
887 return;
888
889 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
890 l2cap_security_cfm(conn, status, encrypt);
891
892 if (conn->security_cfm_cb)
893 conn->security_cfm_cb(conn, status);
894}
895
896static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
897 __u8 encrypt)
898{
899 if (conn->type != ACL_LINK && conn->type != LE_LINK)
900 return;
901
902 l2cap_security_cfm(conn, status, encrypt);
903
904 if (conn->security_cfm_cb)
905 conn->security_cfm_cb(conn, status);
906}
907
908/* ----- HCI callbacks ----- */
909struct hci_cb {
910 struct list_head list;
911
912 char *name;
913
914 void (*security_cfm) (struct hci_conn *conn, __u8 status,
915 __u8 encrypt);
916 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
917 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
918};
919
920static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
921{
922 struct hci_cb *cb;
923 __u8 encrypt;
924
925 hci_proto_auth_cfm(conn, status);
926
927 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
928 return;
929
930 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
931
932 read_lock(&hci_cb_list_lock);
933 list_for_each_entry(cb, &hci_cb_list, list) {
934 if (cb->security_cfm)
935 cb->security_cfm(conn, status, encrypt);
936 }
937 read_unlock(&hci_cb_list_lock);
938}
939
940static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
941 __u8 encrypt)
942{
943 struct hci_cb *cb;
944
945 if (conn->sec_level == BT_SECURITY_SDP)
946 conn->sec_level = BT_SECURITY_LOW;
947
948 if (conn->pending_sec_level > conn->sec_level)
949 conn->sec_level = conn->pending_sec_level;
950
951 hci_proto_encrypt_cfm(conn, status, encrypt);
952
953 read_lock(&hci_cb_list_lock);
954 list_for_each_entry(cb, &hci_cb_list, list) {
955 if (cb->security_cfm)
956 cb->security_cfm(conn, status, encrypt);
957 }
958 read_unlock(&hci_cb_list_lock);
959}
960
961static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
962{
963 struct hci_cb *cb;
964
965 read_lock(&hci_cb_list_lock);
966 list_for_each_entry(cb, &hci_cb_list, list) {
967 if (cb->key_change_cfm)
968 cb->key_change_cfm(conn, status);
969 }
970 read_unlock(&hci_cb_list_lock);
971}
972
973static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
974 __u8 role)
975{
976 struct hci_cb *cb;
977
978 read_lock(&hci_cb_list_lock);
979 list_for_each_entry(cb, &hci_cb_list, list) {
980 if (cb->role_switch_cfm)
981 cb->role_switch_cfm(conn, status, role);
982 }
983 read_unlock(&hci_cb_list_lock);
984}
985
986static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
987{
988 size_t parsed = 0;
989
990 if (data_len < 2)
991 return false;
992
993 while (parsed < data_len - 1) {
994 u8 field_len = data[0];
995
996 if (field_len == 0)
997 break;
998
999 parsed += field_len + 1;
1000
1001 if (parsed > data_len)
1002 break;
1003
1004 if (data[1] == type)
1005 return true;
1006
1007 data += field_len + 1;
1008 }
1009
1010 return false;
1011}
1012
1013static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1014{
1015 size_t parsed = 0;
1016
1017 while (parsed < eir_len) {
1018 u8 field_len = eir[0];
1019
1020 if (field_len == 0)
1021 return parsed;
1022
1023 parsed += field_len + 1;
1024 eir += field_len + 1;
1025 }
1026
1027 return eir_len;
1028}
1029
1030static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1031 u8 data_len)
1032{
1033 eir[eir_len++] = sizeof(type) + data_len;
1034 eir[eir_len++] = type;
1035 memcpy(&eir[eir_len], data, data_len);
1036 eir_len += data_len;
1037
1038 return eir_len;
1039}
1040
1041int hci_register_cb(struct hci_cb *hcb);
1042int hci_unregister_cb(struct hci_cb *hcb);
1043
1044struct hci_request {
1045 struct hci_dev *hdev;
1046 struct sk_buff_head cmd_q;
1047
1048 /* If something goes wrong when building the HCI request, the error
1049 * value is stored in this field.
1050 */
1051 int err;
1052};
1053
1054void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1055int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1056void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param);
1057void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, void *param,
1058 u8 event);
1059void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1060
1061struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1062 void *param, u32 timeout);
1063struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1064 void *param, u8 event, u32 timeout);
1065
1066int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
1067void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1068void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1069
1070void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1071
1072/* ----- HCI Sockets ----- */
1073void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1074void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1075void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1076
1077void hci_sock_dev_event(struct hci_dev *hdev, int event);
1078
1079/* Management interface */
1080#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1081#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1082 BIT(BDADDR_LE_RANDOM))
1083#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1084 BIT(BDADDR_LE_PUBLIC) | \
1085 BIT(BDADDR_LE_RANDOM))
1086
1087int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1088int mgmt_index_added(struct hci_dev *hdev);
1089int mgmt_index_removed(struct hci_dev *hdev);
1090int mgmt_powered(struct hci_dev *hdev, u8 powered);
1091int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1092int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1093int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1094int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1095 bool persistent);
1096int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1097 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1098 u8 *dev_class);
1099int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1100 u8 link_type, u8 addr_type, u8 reason);
1101int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1102 u8 link_type, u8 addr_type, u8 status);
1103int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1104 u8 addr_type, u8 status);
1105int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1106int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1107 u8 status);
1108int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109 u8 status);
1110int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111 u8 link_type, u8 addr_type, __le32 value,
1112 u8 confirm_hint);
1113int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1114 u8 link_type, u8 addr_type, u8 status);
1115int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116 u8 link_type, u8 addr_type, u8 status);
1117int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1118 u8 link_type, u8 addr_type);
1119int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120 u8 link_type, u8 addr_type, u8 status);
1121int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1122 u8 link_type, u8 addr_type, u8 status);
1123int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1124 u8 link_type, u8 addr_type, u32 passkey,
1125 u8 entered);
1126int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1127 u8 addr_type, u8 status);
1128int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1129int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1130int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1131 u8 status);
1132int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1133int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1134 u8 *randomizer, u8 status);
1135int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1136int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1137 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1138 u8 ssp, u8 *eir, u16 eir_len);
1139int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1140 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1141int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1142int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1143int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1144int mgmt_interleaved_discovery(struct hci_dev *hdev);
1145int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1146int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1147bool mgmt_valid_hdev(struct hci_dev *hdev);
1148int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1149
1150/* HCI info for socket */
1151#define hci_pi(sk) ((struct hci_pinfo *) sk)
1152
1153struct hci_pinfo {
1154 struct bt_sock bt;
1155 struct hci_dev *hdev;
1156 struct hci_filter filter;
1157 __u32 cmsg_mask;
1158 unsigned short channel;
1159};
1160
1161/* HCI security filter */
1162#define HCI_SFLT_MAX_OGF 5
1163
1164struct hci_sec_filter {
1165 __u32 type_mask;
1166 __u32 event_mask[2];
1167 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1168};
1169
1170/* ----- HCI requests ----- */
1171#define HCI_REQ_DONE 0
1172#define HCI_REQ_PEND 1
1173#define HCI_REQ_CANCELED 2
1174
1175#define hci_req_lock(d) mutex_lock(&d->req_lock)
1176#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1177
1178void hci_update_ad(struct hci_request *req);
1179
1180void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1181 u16 latency, u16 to_multiplier);
1182void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1183 __u8 ltk[16]);
1184int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1185int hci_cancel_inquiry(struct hci_dev *hdev);
1186int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1187 int timeout);
1188int hci_cancel_le_scan(struct hci_dev *hdev);
1189
1190u8 bdaddr_to_le(u8 bdaddr_type);
1191
1192#endif /* __HCI_CORE_H */
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