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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 <linux/interrupt.h>
29#include <net/bluetooth/hci.h>
30
31/* HCI upper protocols */
32#define HCI_PROTO_L2CAP 0
33#define HCI_PROTO_SCO 1
34
35/* HCI Core structures */
36struct inquiry_data {
37 bdaddr_t bdaddr;
38 __u8 pscan_rep_mode;
39 __u8 pscan_period_mode;
40 __u8 pscan_mode;
41 __u8 dev_class[3];
42 __le16 clock_offset;
43 __s8 rssi;
44 __u8 ssp_mode;
45};
46
47struct inquiry_entry {
48 struct inquiry_entry *next;
49 __u32 timestamp;
50 struct inquiry_data data;
51};
52
53struct inquiry_cache {
54 spinlock_t lock;
55 __u32 timestamp;
56 struct inquiry_entry *list;
57};
58
59struct hci_conn_hash {
60 struct list_head list;
61 spinlock_t lock;
62 unsigned int acl_num;
63 unsigned int sco_num;
64 unsigned int le_num;
65};
66
67struct bdaddr_list {
68 struct list_head list;
69 bdaddr_t bdaddr;
70};
71
72struct bt_uuid {
73 struct list_head list;
74 u8 uuid[16];
75 u8 svc_hint;
76};
77
78struct key_master_id {
79 __le16 ediv;
80 u8 rand[8];
81} __packed;
82
83struct link_key_data {
84 bdaddr_t bdaddr;
85 u8 type;
86 u8 val[16];
87 u8 pin_len;
88 u8 dlen;
89 u8 data[0];
90} __packed;
91
92struct link_key {
93 struct list_head list;
94 bdaddr_t bdaddr;
95 u8 type;
96 u8 val[16];
97 u8 pin_len;
98 u8 dlen;
99 u8 data[0];
100};
101
102struct oob_data {
103 struct list_head list;
104 bdaddr_t bdaddr;
105 u8 hash[16];
106 u8 randomizer[16];
107};
108
109struct adv_entry {
110 struct list_head list;
111 bdaddr_t bdaddr;
112 u8 bdaddr_type;
113};
114
115#define NUM_REASSEMBLY 4
116struct hci_dev {
117 struct list_head list;
118 spinlock_t lock;
119 atomic_t refcnt;
120
121 char name[8];
122 unsigned long flags;
123 __u16 id;
124 __u8 bus;
125 __u8 dev_type;
126 bdaddr_t bdaddr;
127 __u8 dev_name[HCI_MAX_NAME_LENGTH];
128 __u8 eir[HCI_MAX_EIR_LENGTH];
129 __u8 dev_class[3];
130 __u8 major_class;
131 __u8 minor_class;
132 __u8 features[8];
133 __u8 extfeatures[8];
134 __u8 commands[64];
135 __u8 ssp_mode;
136 __u8 hci_ver;
137 __u16 hci_rev;
138 __u8 lmp_ver;
139 __u16 manufacturer;
140 __le16 lmp_subver;
141 __u16 voice_setting;
142 __u8 io_capability;
143
144 __u16 pkt_type;
145 __u16 esco_type;
146 __u16 link_policy;
147 __u16 link_mode;
148
149 __u32 idle_timeout;
150 __u16 sniff_min_interval;
151 __u16 sniff_max_interval;
152
153 unsigned int auto_accept_delay;
154
155 unsigned long quirks;
156
157 atomic_t cmd_cnt;
158 unsigned int acl_cnt;
159 unsigned int sco_cnt;
160 unsigned int le_cnt;
161
162 unsigned int acl_mtu;
163 unsigned int sco_mtu;
164 unsigned int le_mtu;
165 unsigned int acl_pkts;
166 unsigned int sco_pkts;
167 unsigned int le_pkts;
168
169 unsigned long acl_last_tx;
170 unsigned long sco_last_tx;
171 unsigned long le_last_tx;
172
173 struct workqueue_struct *workqueue;
174
175 struct work_struct power_on;
176 struct work_struct power_off;
177 struct timer_list off_timer;
178
179 struct timer_list cmd_timer;
180 struct tasklet_struct cmd_task;
181 struct tasklet_struct rx_task;
182 struct tasklet_struct tx_task;
183
184 struct sk_buff_head rx_q;
185 struct sk_buff_head raw_q;
186 struct sk_buff_head cmd_q;
187
188 struct sk_buff *sent_cmd;
189 struct sk_buff *reassembly[NUM_REASSEMBLY];
190
191 struct mutex req_lock;
192 wait_queue_head_t req_wait_q;
193 __u32 req_status;
194 __u32 req_result;
195
196 __u16 init_last_cmd;
197
198 struct crypto_blkcipher *tfm;
199
200 struct inquiry_cache inq_cache;
201 struct hci_conn_hash conn_hash;
202 struct list_head blacklist;
203
204 struct list_head uuids;
205
206 struct list_head link_keys;
207
208 struct list_head remote_oob_data;
209
210 struct list_head adv_entries;
211 struct timer_list adv_timer;
212
213 struct hci_dev_stats stat;
214
215 struct sk_buff_head driver_init;
216
217 void *driver_data;
218 void *core_data;
219
220 atomic_t promisc;
221
222 struct dentry *debugfs;
223
224 struct device *parent;
225 struct device dev;
226
227 struct rfkill *rfkill;
228
229 struct module *owner;
230
231 int (*open)(struct hci_dev *hdev);
232 int (*close)(struct hci_dev *hdev);
233 int (*flush)(struct hci_dev *hdev);
234 int (*send)(struct sk_buff *skb);
235 void (*destruct)(struct hci_dev *hdev);
236 void (*notify)(struct hci_dev *hdev, unsigned int evt);
237 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
238};
239
240struct hci_conn {
241 struct list_head list;
242
243 atomic_t refcnt;
244
245 bdaddr_t dst;
246 __u8 dst_type;
247 __u16 handle;
248 __u16 state;
249 __u8 mode;
250 __u8 type;
251 __u8 out;
252 __u8 attempt;
253 __u8 dev_class[3];
254 __u8 features[8];
255 __u8 ssp_mode;
256 __u16 interval;
257 __u16 pkt_type;
258 __u16 link_policy;
259 __u32 link_mode;
260 __u8 key_type;
261 __u8 auth_type;
262 __u8 sec_level;
263 __u8 pending_sec_level;
264 __u8 pin_length;
265 __u8 enc_key_size;
266 __u8 io_capability;
267 __u8 power_save;
268 __u16 disc_timeout;
269 unsigned long pend;
270
271 __u8 remote_cap;
272 __u8 remote_oob;
273 __u8 remote_auth;
274
275 unsigned int sent;
276
277 struct sk_buff_head data_q;
278
279 struct timer_list disc_timer;
280 struct timer_list idle_timer;
281 struct timer_list auto_accept_timer;
282
283 struct work_struct work_add;
284 struct work_struct work_del;
285
286 struct device dev;
287 atomic_t devref;
288
289 struct hci_dev *hdev;
290 void *l2cap_data;
291 void *sco_data;
292
293 struct hci_conn *link;
294
295 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
296 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
297 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
298};
299
300extern struct hci_proto *hci_proto[];
301extern struct list_head hci_dev_list;
302extern struct list_head hci_cb_list;
303extern rwlock_t hci_dev_list_lock;
304extern rwlock_t hci_cb_list_lock;
305
306/* ----- Inquiry cache ----- */
307#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
308#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
309
310#define inquiry_cache_lock(c) spin_lock(&c->lock)
311#define inquiry_cache_unlock(c) spin_unlock(&c->lock)
312#define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
313#define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
314
315static inline void inquiry_cache_init(struct hci_dev *hdev)
316{
317 struct inquiry_cache *c = &hdev->inq_cache;
318 spin_lock_init(&c->lock);
319 c->list = NULL;
320}
321
322static inline int inquiry_cache_empty(struct hci_dev *hdev)
323{
324 struct inquiry_cache *c = &hdev->inq_cache;
325 return c->list == NULL;
326}
327
328static inline long inquiry_cache_age(struct hci_dev *hdev)
329{
330 struct inquiry_cache *c = &hdev->inq_cache;
331 return jiffies - c->timestamp;
332}
333
334static inline long inquiry_entry_age(struct inquiry_entry *e)
335{
336 return jiffies - e->timestamp;
337}
338
339struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
340 bdaddr_t *bdaddr);
341void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
342
343/* ----- HCI Connections ----- */
344enum {
345 HCI_CONN_AUTH_PEND,
346 HCI_CONN_REAUTH_PEND,
347 HCI_CONN_ENCRYPT_PEND,
348 HCI_CONN_RSWITCH_PEND,
349 HCI_CONN_MODE_CHANGE_PEND,
350 HCI_CONN_SCO_SETUP_PEND,
351};
352
353static inline void hci_conn_hash_init(struct hci_dev *hdev)
354{
355 struct hci_conn_hash *h = &hdev->conn_hash;
356 INIT_LIST_HEAD(&h->list);
357 spin_lock_init(&h->lock);
358 h->acl_num = 0;
359 h->sco_num = 0;
360}
361
362static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
363{
364 struct hci_conn_hash *h = &hdev->conn_hash;
365 list_add(&c->list, &h->list);
366 switch (c->type) {
367 case ACL_LINK:
368 h->acl_num++;
369 break;
370 case LE_LINK:
371 h->le_num++;
372 break;
373 case SCO_LINK:
374 case ESCO_LINK:
375 h->sco_num++;
376 break;
377 }
378}
379
380static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
381{
382 struct hci_conn_hash *h = &hdev->conn_hash;
383 list_del(&c->list);
384 switch (c->type) {
385 case ACL_LINK:
386 h->acl_num--;
387 break;
388 case LE_LINK:
389 h->le_num--;
390 break;
391 case SCO_LINK:
392 case ESCO_LINK:
393 h->sco_num--;
394 break;
395 }
396}
397
398static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
399 __u16 handle)
400{
401 struct hci_conn_hash *h = &hdev->conn_hash;
402 struct list_head *p;
403 struct hci_conn *c;
404
405 list_for_each(p, &h->list) {
406 c = list_entry(p, struct hci_conn, list);
407 if (c->handle == handle)
408 return c;
409 }
410 return NULL;
411}
412
413static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
414 __u8 type, bdaddr_t *ba)
415{
416 struct hci_conn_hash *h = &hdev->conn_hash;
417 struct list_head *p;
418 struct hci_conn *c;
419
420 list_for_each(p, &h->list) {
421 c = list_entry(p, struct hci_conn, list);
422 if (c->type == type && !bacmp(&c->dst, ba))
423 return c;
424 }
425 return NULL;
426}
427
428static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
429 __u8 type, __u16 state)
430{
431 struct hci_conn_hash *h = &hdev->conn_hash;
432 struct list_head *p;
433 struct hci_conn *c;
434
435 list_for_each(p, &h->list) {
436 c = list_entry(p, struct hci_conn, list);
437 if (c->type == type && c->state == state)
438 return c;
439 }
440 return NULL;
441}
442
443void hci_acl_connect(struct hci_conn *conn);
444void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
445void hci_add_sco(struct hci_conn *conn, __u16 handle);
446void hci_setup_sync(struct hci_conn *conn, __u16 handle);
447void hci_sco_setup(struct hci_conn *conn, __u8 status);
448
449struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
450int hci_conn_del(struct hci_conn *conn);
451void hci_conn_hash_flush(struct hci_dev *hdev);
452void hci_conn_check_pending(struct hci_dev *hdev);
453
454struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
455 __u8 sec_level, __u8 auth_type);
456int hci_conn_check_link_mode(struct hci_conn *conn);
457int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
458int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
459int hci_conn_change_link_key(struct hci_conn *conn);
460int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
461
462void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
463void hci_conn_enter_sniff_mode(struct hci_conn *conn);
464
465void hci_conn_hold_device(struct hci_conn *conn);
466void hci_conn_put_device(struct hci_conn *conn);
467
468static inline void hci_conn_hold(struct hci_conn *conn)
469{
470 atomic_inc(&conn->refcnt);
471 del_timer(&conn->disc_timer);
472}
473
474static inline void hci_conn_put(struct hci_conn *conn)
475{
476 if (atomic_dec_and_test(&conn->refcnt)) {
477 unsigned long timeo;
478 if (conn->type == ACL_LINK) {
479 del_timer(&conn->idle_timer);
480 if (conn->state == BT_CONNECTED) {
481 timeo = msecs_to_jiffies(conn->disc_timeout);
482 if (!conn->out)
483 timeo *= 2;
484 } else {
485 timeo = msecs_to_jiffies(10);
486 }
487 } else {
488 timeo = msecs_to_jiffies(10);
489 }
490 mod_timer(&conn->disc_timer, jiffies + timeo);
491 }
492}
493
494/* ----- HCI Devices ----- */
495static inline void __hci_dev_put(struct hci_dev *d)
496{
497 if (atomic_dec_and_test(&d->refcnt))
498 d->destruct(d);
499}
500
501static inline void hci_dev_put(struct hci_dev *d)
502{
503 __hci_dev_put(d);
504 module_put(d->owner);
505}
506
507static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
508{
509 atomic_inc(&d->refcnt);
510 return d;
511}
512
513static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
514{
515 if (try_module_get(d->owner))
516 return __hci_dev_hold(d);
517 return NULL;
518}
519
520#define hci_dev_lock(d) spin_lock(&d->lock)
521#define hci_dev_unlock(d) spin_unlock(&d->lock)
522#define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
523#define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
524
525struct hci_dev *hci_dev_get(int index);
526struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
527
528struct hci_dev *hci_alloc_dev(void);
529void hci_free_dev(struct hci_dev *hdev);
530int hci_register_dev(struct hci_dev *hdev);
531int hci_unregister_dev(struct hci_dev *hdev);
532int hci_suspend_dev(struct hci_dev *hdev);
533int hci_resume_dev(struct hci_dev *hdev);
534int hci_dev_open(__u16 dev);
535int hci_dev_close(__u16 dev);
536int hci_dev_reset(__u16 dev);
537int hci_dev_reset_stat(__u16 dev);
538int hci_dev_cmd(unsigned int cmd, void __user *arg);
539int hci_get_dev_list(void __user *arg);
540int hci_get_dev_info(void __user *arg);
541int hci_get_conn_list(void __user *arg);
542int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
543int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
544int hci_inquiry(void __user *arg);
545
546struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
547int hci_blacklist_clear(struct hci_dev *hdev);
548int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
549int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
550
551int hci_uuids_clear(struct hci_dev *hdev);
552
553int hci_link_keys_clear(struct hci_dev *hdev);
554struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
555int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
556 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
557struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
558struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
559 bdaddr_t *bdaddr, u8 type);
560int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
561 u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
562int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
563
564int hci_remote_oob_data_clear(struct hci_dev *hdev);
565struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
566 bdaddr_t *bdaddr);
567int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
568 u8 *randomizer);
569int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
570
571#define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
572int hci_adv_entries_clear(struct hci_dev *hdev);
573struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
574int hci_add_adv_entry(struct hci_dev *hdev,
575 struct hci_ev_le_advertising_info *ev);
576
577void hci_del_off_timer(struct hci_dev *hdev);
578
579void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
580
581int hci_recv_frame(struct sk_buff *skb);
582int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
583int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
584
585int hci_register_sysfs(struct hci_dev *hdev);
586void hci_unregister_sysfs(struct hci_dev *hdev);
587void hci_conn_init_sysfs(struct hci_conn *conn);
588void hci_conn_add_sysfs(struct hci_conn *conn);
589void hci_conn_del_sysfs(struct hci_conn *conn);
590
591#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
592
593/* ----- LMP capabilities ----- */
594#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
595#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
596#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
597#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
598#define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
599#define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
600#define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
601#define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
602
603/* ----- Extended LMP capabilities ----- */
604#define lmp_host_le_capable(dev) ((dev)->extfeatures[0] & LMP_HOST_LE)
605
606/* ----- HCI protocols ----- */
607struct hci_proto {
608 char *name;
609 unsigned int id;
610 unsigned long flags;
611
612 void *priv;
613
614 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr,
615 __u8 type);
616 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
617 int (*disconn_ind) (struct hci_conn *conn);
618 int (*disconn_cfm) (struct hci_conn *conn, __u8 reason);
619 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb,
620 __u16 flags);
621 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
622 int (*security_cfm) (struct hci_conn *conn, __u8 status,
623 __u8 encrypt);
624};
625
626static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
627 __u8 type)
628{
629 register struct hci_proto *hp;
630 int mask = 0;
631
632 hp = hci_proto[HCI_PROTO_L2CAP];
633 if (hp && hp->connect_ind)
634 mask |= hp->connect_ind(hdev, bdaddr, type);
635
636 hp = hci_proto[HCI_PROTO_SCO];
637 if (hp && hp->connect_ind)
638 mask |= hp->connect_ind(hdev, bdaddr, type);
639
640 return mask;
641}
642
643static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
644{
645 register struct hci_proto *hp;
646
647 hp = hci_proto[HCI_PROTO_L2CAP];
648 if (hp && hp->connect_cfm)
649 hp->connect_cfm(conn, status);
650
651 hp = hci_proto[HCI_PROTO_SCO];
652 if (hp && hp->connect_cfm)
653 hp->connect_cfm(conn, status);
654
655 if (conn->connect_cfm_cb)
656 conn->connect_cfm_cb(conn, status);
657}
658
659static inline int hci_proto_disconn_ind(struct hci_conn *conn)
660{
661 register struct hci_proto *hp;
662 int reason = 0x13;
663
664 hp = hci_proto[HCI_PROTO_L2CAP];
665 if (hp && hp->disconn_ind)
666 reason = hp->disconn_ind(conn);
667
668 hp = hci_proto[HCI_PROTO_SCO];
669 if (hp && hp->disconn_ind)
670 reason = hp->disconn_ind(conn);
671
672 return reason;
673}
674
675static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
676{
677 register struct hci_proto *hp;
678
679 hp = hci_proto[HCI_PROTO_L2CAP];
680 if (hp && hp->disconn_cfm)
681 hp->disconn_cfm(conn, reason);
682
683 hp = hci_proto[HCI_PROTO_SCO];
684 if (hp && hp->disconn_cfm)
685 hp->disconn_cfm(conn, reason);
686
687 if (conn->disconn_cfm_cb)
688 conn->disconn_cfm_cb(conn, reason);
689}
690
691static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
692{
693 register struct hci_proto *hp;
694 __u8 encrypt;
695
696 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
697 return;
698
699 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
700
701 hp = hci_proto[HCI_PROTO_L2CAP];
702 if (hp && hp->security_cfm)
703 hp->security_cfm(conn, status, encrypt);
704
705 hp = hci_proto[HCI_PROTO_SCO];
706 if (hp && hp->security_cfm)
707 hp->security_cfm(conn, status, encrypt);
708
709 if (conn->security_cfm_cb)
710 conn->security_cfm_cb(conn, status);
711}
712
713static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
714 __u8 encrypt)
715{
716 register struct hci_proto *hp;
717
718 hp = hci_proto[HCI_PROTO_L2CAP];
719 if (hp && hp->security_cfm)
720 hp->security_cfm(conn, status, encrypt);
721
722 hp = hci_proto[HCI_PROTO_SCO];
723 if (hp && hp->security_cfm)
724 hp->security_cfm(conn, status, encrypt);
725
726 if (conn->security_cfm_cb)
727 conn->security_cfm_cb(conn, status);
728}
729
730int hci_register_proto(struct hci_proto *hproto);
731int hci_unregister_proto(struct hci_proto *hproto);
732
733/* ----- HCI callbacks ----- */
734struct hci_cb {
735 struct list_head list;
736
737 char *name;
738
739 void (*security_cfm) (struct hci_conn *conn, __u8 status,
740 __u8 encrypt);
741 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
742 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
743};
744
745static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
746{
747 struct list_head *p;
748 __u8 encrypt;
749
750 hci_proto_auth_cfm(conn, status);
751
752 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
753 return;
754
755 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
756
757 read_lock_bh(&hci_cb_list_lock);
758 list_for_each(p, &hci_cb_list) {
759 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
760 if (cb->security_cfm)
761 cb->security_cfm(conn, status, encrypt);
762 }
763 read_unlock_bh(&hci_cb_list_lock);
764}
765
766static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
767 __u8 encrypt)
768{
769 struct list_head *p;
770
771 if (conn->sec_level == BT_SECURITY_SDP)
772 conn->sec_level = BT_SECURITY_LOW;
773
774 if (conn->pending_sec_level > conn->sec_level)
775 conn->sec_level = conn->pending_sec_level;
776
777 hci_proto_encrypt_cfm(conn, status, encrypt);
778
779 read_lock_bh(&hci_cb_list_lock);
780 list_for_each(p, &hci_cb_list) {
781 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
782 if (cb->security_cfm)
783 cb->security_cfm(conn, status, encrypt);
784 }
785 read_unlock_bh(&hci_cb_list_lock);
786}
787
788static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
789{
790 struct list_head *p;
791
792 read_lock_bh(&hci_cb_list_lock);
793 list_for_each(p, &hci_cb_list) {
794 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
795 if (cb->key_change_cfm)
796 cb->key_change_cfm(conn, status);
797 }
798 read_unlock_bh(&hci_cb_list_lock);
799}
800
801static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
802 __u8 role)
803{
804 struct list_head *p;
805
806 read_lock_bh(&hci_cb_list_lock);
807 list_for_each(p, &hci_cb_list) {
808 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
809 if (cb->role_switch_cfm)
810 cb->role_switch_cfm(conn, status, role);
811 }
812 read_unlock_bh(&hci_cb_list_lock);
813}
814
815int hci_register_cb(struct hci_cb *hcb);
816int hci_unregister_cb(struct hci_cb *hcb);
817
818int hci_register_notifier(struct notifier_block *nb);
819int hci_unregister_notifier(struct notifier_block *nb);
820
821int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
822void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
823void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
824
825void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
826
827void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
828
829/* ----- HCI Sockets ----- */
830void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
831 struct sock *skip_sk);
832
833/* Management interface */
834int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
835int mgmt_index_added(u16 index);
836int mgmt_index_removed(u16 index);
837int mgmt_powered(u16 index, u8 powered);
838int mgmt_discoverable(u16 index, u8 discoverable);
839int mgmt_connectable(u16 index, u8 connectable);
840int mgmt_new_key(u16 index, struct link_key *key, u8 persistent);
841int mgmt_connected(u16 index, bdaddr_t *bdaddr);
842int mgmt_disconnected(u16 index, bdaddr_t *bdaddr);
843int mgmt_disconnect_failed(u16 index);
844int mgmt_connect_failed(u16 index, bdaddr_t *bdaddr, u8 status);
845int mgmt_pin_code_request(u16 index, bdaddr_t *bdaddr, u8 secure);
846int mgmt_pin_code_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
847int mgmt_pin_code_neg_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
848int mgmt_user_confirm_request(u16 index, bdaddr_t *bdaddr, __le32 value,
849 u8 confirm_hint);
850int mgmt_user_confirm_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
851int mgmt_user_confirm_neg_reply_complete(u16 index, bdaddr_t *bdaddr,
852 u8 status);
853int mgmt_auth_failed(u16 index, bdaddr_t *bdaddr, u8 status);
854int mgmt_set_local_name_complete(u16 index, u8 *name, u8 status);
855int mgmt_read_local_oob_data_reply_complete(u16 index, u8 *hash, u8 *randomizer,
856 u8 status);
857int mgmt_device_found(u16 index, bdaddr_t *bdaddr, u8 *dev_class, s8 rssi,
858 u8 *eir);
859int mgmt_remote_name(u16 index, bdaddr_t *bdaddr, u8 *name);
860int mgmt_discovering(u16 index, u8 discovering);
861
862/* HCI info for socket */
863#define hci_pi(sk) ((struct hci_pinfo *) sk)
864
865struct hci_pinfo {
866 struct bt_sock bt;
867 struct hci_dev *hdev;
868 struct hci_filter filter;
869 __u32 cmsg_mask;
870 unsigned short channel;
871};
872
873/* HCI security filter */
874#define HCI_SFLT_MAX_OGF 5
875
876struct hci_sec_filter {
877 __u32 type_mask;
878 __u32 event_mask[2];
879 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
880};
881
882/* ----- HCI requests ----- */
883#define HCI_REQ_DONE 0
884#define HCI_REQ_PEND 1
885#define HCI_REQ_CANCELED 2
886
887#define hci_req_lock(d) mutex_lock(&d->req_lock)
888#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
889
890void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
891
892void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
893 u16 latency, u16 to_multiplier);
894void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
895 __u8 ltk[16]);
896void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
897void hci_le_ltk_neg_reply(struct hci_conn *conn);
898
899#endif /* __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 <linux/interrupt.h>
29#include <net/bluetooth/hci.h>
30
31/* HCI priority */
32#define HCI_PRIO_MAX 7
33
34/* HCI Core structures */
35struct inquiry_data {
36 bdaddr_t bdaddr;
37 __u8 pscan_rep_mode;
38 __u8 pscan_period_mode;
39 __u8 pscan_mode;
40 __u8 dev_class[3];
41 __le16 clock_offset;
42 __s8 rssi;
43 __u8 ssp_mode;
44};
45
46struct inquiry_entry {
47 struct list_head all; /* inq_cache.all */
48 struct list_head list; /* unknown or resolve */
49 enum {
50 NAME_NOT_KNOWN,
51 NAME_NEEDED,
52 NAME_PENDING,
53 NAME_KNOWN,
54 } name_state;
55 __u32 timestamp;
56 struct inquiry_data data;
57};
58
59struct discovery_state {
60 int type;
61 enum {
62 DISCOVERY_STOPPED,
63 DISCOVERY_STARTING,
64 DISCOVERY_FINDING,
65 DISCOVERY_RESOLVING,
66 DISCOVERY_STOPPING,
67 } state;
68 struct list_head all; /* All devices found during inquiry */
69 struct list_head unknown; /* Name state not known */
70 struct list_head resolve; /* Name needs to be resolved */
71 __u32 timestamp;
72};
73
74struct hci_conn_hash {
75 struct list_head list;
76 unsigned int acl_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 svc_hint;
90};
91
92struct smp_ltk {
93 struct list_head list;
94 bdaddr_t bdaddr;
95 u8 bdaddr_type;
96 u8 authenticated;
97 u8 type;
98 u8 enc_size;
99 __le16 ediv;
100 u8 rand[8];
101 u8 val[16];
102} __packed;
103
104struct link_key {
105 struct list_head list;
106 bdaddr_t bdaddr;
107 u8 type;
108 u8 val[16];
109 u8 pin_len;
110};
111
112struct oob_data {
113 struct list_head list;
114 bdaddr_t bdaddr;
115 u8 hash[16];
116 u8 randomizer[16];
117};
118
119struct adv_entry {
120 struct list_head list;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123};
124
125struct le_scan_params {
126 u8 type;
127 u16 interval;
128 u16 window;
129 int timeout;
130};
131
132#define HCI_MAX_SHORT_NAME_LENGTH 10
133
134#define NUM_REASSEMBLY 4
135struct hci_dev {
136 struct list_head list;
137 struct mutex lock;
138
139 char name[8];
140 unsigned long flags;
141 __u16 id;
142 __u8 bus;
143 __u8 dev_type;
144 bdaddr_t bdaddr;
145 __u8 dev_name[HCI_MAX_NAME_LENGTH];
146 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
147 __u8 eir[HCI_MAX_EIR_LENGTH];
148 __u8 dev_class[3];
149 __u8 major_class;
150 __u8 minor_class;
151 __u8 features[8];
152 __u8 host_features[8];
153 __u8 commands[64];
154 __u8 hci_ver;
155 __u16 hci_rev;
156 __u8 lmp_ver;
157 __u16 manufacturer;
158 __u16 lmp_subver;
159 __u16 voice_setting;
160 __u8 io_capability;
161 __s8 inq_tx_power;
162 __u16 devid_source;
163 __u16 devid_vendor;
164 __u16 devid_product;
165 __u16 devid_version;
166
167 __u16 pkt_type;
168 __u16 esco_type;
169 __u16 link_policy;
170 __u16 link_mode;
171
172 __u32 idle_timeout;
173 __u16 sniff_min_interval;
174 __u16 sniff_max_interval;
175
176 __u8 amp_status;
177 __u32 amp_total_bw;
178 __u32 amp_max_bw;
179 __u32 amp_min_latency;
180 __u32 amp_max_pdu;
181 __u8 amp_type;
182 __u16 amp_pal_cap;
183 __u16 amp_assoc_size;
184 __u32 amp_max_flush_to;
185 __u32 amp_be_flush_to;
186
187 __u8 flow_ctl_mode;
188
189 unsigned int auto_accept_delay;
190
191 unsigned long quirks;
192
193 atomic_t cmd_cnt;
194 unsigned int acl_cnt;
195 unsigned int sco_cnt;
196 unsigned int le_cnt;
197
198 unsigned int acl_mtu;
199 unsigned int sco_mtu;
200 unsigned int le_mtu;
201 unsigned int acl_pkts;
202 unsigned int sco_pkts;
203 unsigned int le_pkts;
204
205 __u16 block_len;
206 __u16 block_mtu;
207 __u16 num_blocks;
208 __u16 block_cnt;
209
210 unsigned long acl_last_tx;
211 unsigned long sco_last_tx;
212 unsigned long le_last_tx;
213
214 struct workqueue_struct *workqueue;
215
216 struct work_struct power_on;
217 struct delayed_work power_off;
218
219 __u16 discov_timeout;
220 struct delayed_work discov_off;
221
222 struct delayed_work service_cache;
223
224 struct timer_list cmd_timer;
225
226 struct work_struct rx_work;
227 struct work_struct cmd_work;
228 struct work_struct tx_work;
229
230 struct sk_buff_head rx_q;
231 struct sk_buff_head raw_q;
232 struct sk_buff_head cmd_q;
233
234 struct sk_buff *sent_cmd;
235 struct sk_buff *reassembly[NUM_REASSEMBLY];
236
237 struct mutex req_lock;
238 wait_queue_head_t req_wait_q;
239 __u32 req_status;
240 __u32 req_result;
241
242 __u16 init_last_cmd;
243
244 struct list_head mgmt_pending;
245
246 struct discovery_state discovery;
247 struct hci_conn_hash conn_hash;
248 struct list_head blacklist;
249
250 struct list_head uuids;
251
252 struct list_head link_keys;
253
254 struct list_head long_term_keys;
255
256 struct list_head remote_oob_data;
257
258 struct hci_dev_stats stat;
259
260 struct sk_buff_head driver_init;
261
262 void *core_data;
263
264 atomic_t promisc;
265
266 struct dentry *debugfs;
267
268 struct device dev;
269
270 struct rfkill *rfkill;
271
272 unsigned long dev_flags;
273
274 struct delayed_work le_scan_disable;
275
276 struct work_struct le_scan;
277 struct le_scan_params le_scan_params;
278
279 int (*open)(struct hci_dev *hdev);
280 int (*close)(struct hci_dev *hdev);
281 int (*flush)(struct hci_dev *hdev);
282 int (*send)(struct sk_buff *skb);
283 void (*notify)(struct hci_dev *hdev, unsigned int evt);
284 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
285};
286
287struct hci_conn {
288 struct list_head list;
289
290 atomic_t refcnt;
291
292 bdaddr_t dst;
293 __u8 dst_type;
294 __u16 handle;
295 __u16 state;
296 __u8 mode;
297 __u8 type;
298 bool out;
299 __u8 attempt;
300 __u8 dev_class[3];
301 __u8 features[8];
302 __u16 interval;
303 __u16 pkt_type;
304 __u16 link_policy;
305 __u32 link_mode;
306 __u8 key_type;
307 __u8 auth_type;
308 __u8 sec_level;
309 __u8 pending_sec_level;
310 __u8 pin_length;
311 __u8 enc_key_size;
312 __u8 io_capability;
313 __u16 disc_timeout;
314 unsigned long flags;
315
316 __u8 remote_cap;
317 __u8 remote_auth;
318 bool flush_key;
319
320 unsigned int sent;
321
322 struct sk_buff_head data_q;
323 struct list_head chan_list;
324
325 struct delayed_work disc_work;
326 struct timer_list idle_timer;
327 struct timer_list auto_accept_timer;
328
329 struct device dev;
330 atomic_t devref;
331
332 struct hci_dev *hdev;
333 void *l2cap_data;
334 void *sco_data;
335 void *smp_conn;
336
337 struct hci_conn *link;
338
339 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
340 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
341 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
342};
343
344struct hci_chan {
345 struct list_head list;
346
347 struct hci_conn *conn;
348 struct sk_buff_head data_q;
349 unsigned int sent;
350};
351
352extern struct list_head hci_dev_list;
353extern struct list_head hci_cb_list;
354extern rwlock_t hci_dev_list_lock;
355extern rwlock_t hci_cb_list_lock;
356
357/* ----- HCI interface to upper protocols ----- */
358extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
359extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
360extern int l2cap_disconn_ind(struct hci_conn *hcon);
361extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
362extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
363extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
364
365extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
366extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
367extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
368extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
369
370/* ----- Inquiry cache ----- */
371#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
372#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
373
374static inline void discovery_init(struct hci_dev *hdev)
375{
376 hdev->discovery.state = DISCOVERY_STOPPED;
377 INIT_LIST_HEAD(&hdev->discovery.all);
378 INIT_LIST_HEAD(&hdev->discovery.unknown);
379 INIT_LIST_HEAD(&hdev->discovery.resolve);
380}
381
382bool hci_discovery_active(struct hci_dev *hdev);
383
384void hci_discovery_set_state(struct hci_dev *hdev, int state);
385
386static inline int inquiry_cache_empty(struct hci_dev *hdev)
387{
388 return list_empty(&hdev->discovery.all);
389}
390
391static inline long inquiry_cache_age(struct hci_dev *hdev)
392{
393 struct discovery_state *c = &hdev->discovery;
394 return jiffies - c->timestamp;
395}
396
397static inline long inquiry_entry_age(struct inquiry_entry *e)
398{
399 return jiffies - e->timestamp;
400}
401
402struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
403 bdaddr_t *bdaddr);
404struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
405 bdaddr_t *bdaddr);
406struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
407 bdaddr_t *bdaddr,
408 int state);
409void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
410 struct inquiry_entry *ie);
411bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
412 bool name_known, bool *ssp);
413
414/* ----- HCI Connections ----- */
415enum {
416 HCI_CONN_AUTH_PEND,
417 HCI_CONN_REAUTH_PEND,
418 HCI_CONN_ENCRYPT_PEND,
419 HCI_CONN_RSWITCH_PEND,
420 HCI_CONN_MODE_CHANGE_PEND,
421 HCI_CONN_SCO_SETUP_PEND,
422 HCI_CONN_LE_SMP_PEND,
423 HCI_CONN_MGMT_CONNECTED,
424 HCI_CONN_SSP_ENABLED,
425 HCI_CONN_POWER_SAVE,
426 HCI_CONN_REMOTE_OOB,
427};
428
429static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
430{
431 struct hci_dev *hdev = conn->hdev;
432 return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
433 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
434}
435
436static inline void hci_conn_hash_init(struct hci_dev *hdev)
437{
438 struct hci_conn_hash *h = &hdev->conn_hash;
439 INIT_LIST_HEAD(&h->list);
440 h->acl_num = 0;
441 h->sco_num = 0;
442 h->le_num = 0;
443}
444
445static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
446{
447 struct hci_conn_hash *h = &hdev->conn_hash;
448 list_add_rcu(&c->list, &h->list);
449 switch (c->type) {
450 case ACL_LINK:
451 h->acl_num++;
452 break;
453 case LE_LINK:
454 h->le_num++;
455 break;
456 case SCO_LINK:
457 case ESCO_LINK:
458 h->sco_num++;
459 break;
460 }
461}
462
463static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
464{
465 struct hci_conn_hash *h = &hdev->conn_hash;
466
467 list_del_rcu(&c->list);
468 synchronize_rcu();
469
470 switch (c->type) {
471 case ACL_LINK:
472 h->acl_num--;
473 break;
474 case LE_LINK:
475 h->le_num--;
476 break;
477 case SCO_LINK:
478 case ESCO_LINK:
479 h->sco_num--;
480 break;
481 }
482}
483
484static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
485{
486 struct hci_conn_hash *h = &hdev->conn_hash;
487 switch (type) {
488 case ACL_LINK:
489 return h->acl_num;
490 case LE_LINK:
491 return h->le_num;
492 case SCO_LINK:
493 case ESCO_LINK:
494 return h->sco_num;
495 default:
496 return 0;
497 }
498}
499
500static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
501 __u16 handle)
502{
503 struct hci_conn_hash *h = &hdev->conn_hash;
504 struct hci_conn *c;
505
506 rcu_read_lock();
507
508 list_for_each_entry_rcu(c, &h->list, list) {
509 if (c->handle == handle) {
510 rcu_read_unlock();
511 return c;
512 }
513 }
514 rcu_read_unlock();
515
516 return NULL;
517}
518
519static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
520 __u8 type, bdaddr_t *ba)
521{
522 struct hci_conn_hash *h = &hdev->conn_hash;
523 struct hci_conn *c;
524
525 rcu_read_lock();
526
527 list_for_each_entry_rcu(c, &h->list, list) {
528 if (c->type == type && !bacmp(&c->dst, ba)) {
529 rcu_read_unlock();
530 return c;
531 }
532 }
533
534 rcu_read_unlock();
535
536 return NULL;
537}
538
539static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
540 __u8 type, __u16 state)
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 && c->state == state) {
549 rcu_read_unlock();
550 return c;
551 }
552 }
553
554 rcu_read_unlock();
555
556 return NULL;
557}
558
559void hci_acl_connect(struct hci_conn *conn);
560void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
561void hci_add_sco(struct hci_conn *conn, __u16 handle);
562void hci_setup_sync(struct hci_conn *conn, __u16 handle);
563void hci_sco_setup(struct hci_conn *conn, __u8 status);
564
565struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
566int hci_conn_del(struct hci_conn *conn);
567void hci_conn_hash_flush(struct hci_dev *hdev);
568void hci_conn_check_pending(struct hci_dev *hdev);
569
570struct hci_chan *hci_chan_create(struct hci_conn *conn);
571int hci_chan_del(struct hci_chan *chan);
572void hci_chan_list_flush(struct hci_conn *conn);
573
574struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
575 __u8 dst_type, __u8 sec_level, __u8 auth_type);
576int hci_conn_check_link_mode(struct hci_conn *conn);
577int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
578int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
579int hci_conn_change_link_key(struct hci_conn *conn);
580int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
581
582void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
583
584void hci_conn_hold_device(struct hci_conn *conn);
585void hci_conn_put_device(struct hci_conn *conn);
586
587static inline void hci_conn_hold(struct hci_conn *conn)
588{
589 atomic_inc(&conn->refcnt);
590 cancel_delayed_work(&conn->disc_work);
591}
592
593static inline void hci_conn_put(struct hci_conn *conn)
594{
595 if (atomic_dec_and_test(&conn->refcnt)) {
596 unsigned long timeo;
597 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
598 del_timer(&conn->idle_timer);
599 if (conn->state == BT_CONNECTED) {
600 timeo = msecs_to_jiffies(conn->disc_timeout);
601 if (!conn->out)
602 timeo *= 2;
603 } else {
604 timeo = msecs_to_jiffies(10);
605 }
606 } else {
607 timeo = msecs_to_jiffies(10);
608 }
609 cancel_delayed_work(&conn->disc_work);
610 queue_delayed_work(conn->hdev->workqueue,
611 &conn->disc_work, timeo);
612 }
613}
614
615/* ----- HCI Devices ----- */
616static inline void hci_dev_put(struct hci_dev *d)
617{
618 put_device(&d->dev);
619}
620
621static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
622{
623 get_device(&d->dev);
624 return d;
625}
626
627#define hci_dev_lock(d) mutex_lock(&d->lock)
628#define hci_dev_unlock(d) mutex_unlock(&d->lock)
629
630#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
631#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
632
633static inline void *hci_get_drvdata(struct hci_dev *hdev)
634{
635 return dev_get_drvdata(&hdev->dev);
636}
637
638static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
639{
640 dev_set_drvdata(&hdev->dev, data);
641}
642
643struct hci_dev *hci_dev_get(int index);
644struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
645
646struct hci_dev *hci_alloc_dev(void);
647void hci_free_dev(struct hci_dev *hdev);
648int hci_register_dev(struct hci_dev *hdev);
649void hci_unregister_dev(struct hci_dev *hdev);
650int hci_suspend_dev(struct hci_dev *hdev);
651int hci_resume_dev(struct hci_dev *hdev);
652int hci_dev_open(__u16 dev);
653int hci_dev_close(__u16 dev);
654int hci_dev_reset(__u16 dev);
655int hci_dev_reset_stat(__u16 dev);
656int hci_dev_cmd(unsigned int cmd, void __user *arg);
657int hci_get_dev_list(void __user *arg);
658int hci_get_dev_info(void __user *arg);
659int hci_get_conn_list(void __user *arg);
660int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
661int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
662int hci_inquiry(void __user *arg);
663
664struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
665int hci_blacklist_clear(struct hci_dev *hdev);
666int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
667int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
668
669int hci_uuids_clear(struct hci_dev *hdev);
670
671int hci_link_keys_clear(struct hci_dev *hdev);
672struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
673int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
674 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
675struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
676int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
677 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
678 __le16 ediv, u8 rand[8]);
679struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
680 u8 addr_type);
681int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
682int hci_smp_ltks_clear(struct hci_dev *hdev);
683int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
684
685int hci_remote_oob_data_clear(struct hci_dev *hdev);
686struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
687 bdaddr_t *bdaddr);
688int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
689 u8 *randomizer);
690int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
691
692void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
693
694int hci_recv_frame(struct sk_buff *skb);
695int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
696int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
697
698void hci_init_sysfs(struct hci_dev *hdev);
699int hci_add_sysfs(struct hci_dev *hdev);
700void hci_del_sysfs(struct hci_dev *hdev);
701void hci_conn_init_sysfs(struct hci_conn *conn);
702void hci_conn_add_sysfs(struct hci_conn *conn);
703void hci_conn_del_sysfs(struct hci_conn *conn);
704
705#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
706
707/* ----- LMP capabilities ----- */
708#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
709#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
710#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
711#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
712#define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
713#define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
714#define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
715#define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
716#define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
717
718/* ----- Extended LMP capabilities ----- */
719#define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
720
721/* ----- HCI protocols ----- */
722static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
723 __u8 type)
724{
725 switch (type) {
726 case ACL_LINK:
727 return l2cap_connect_ind(hdev, bdaddr);
728
729 case SCO_LINK:
730 case ESCO_LINK:
731 return sco_connect_ind(hdev, bdaddr);
732
733 default:
734 BT_ERR("unknown link type %d", type);
735 return -EINVAL;
736 }
737}
738
739static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
740{
741 switch (conn->type) {
742 case ACL_LINK:
743 case LE_LINK:
744 l2cap_connect_cfm(conn, status);
745 break;
746
747 case SCO_LINK:
748 case ESCO_LINK:
749 sco_connect_cfm(conn, status);
750 break;
751
752 default:
753 BT_ERR("unknown link type %d", conn->type);
754 break;
755 }
756
757 if (conn->connect_cfm_cb)
758 conn->connect_cfm_cb(conn, status);
759}
760
761static inline int hci_proto_disconn_ind(struct hci_conn *conn)
762{
763 if (conn->type != ACL_LINK && conn->type != LE_LINK)
764 return HCI_ERROR_REMOTE_USER_TERM;
765
766 return l2cap_disconn_ind(conn);
767}
768
769static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
770{
771 switch (conn->type) {
772 case ACL_LINK:
773 case LE_LINK:
774 l2cap_disconn_cfm(conn, reason);
775 break;
776
777 case SCO_LINK:
778 case ESCO_LINK:
779 sco_disconn_cfm(conn, reason);
780 break;
781
782 default:
783 BT_ERR("unknown link type %d", conn->type);
784 break;
785 }
786
787 if (conn->disconn_cfm_cb)
788 conn->disconn_cfm_cb(conn, reason);
789}
790
791static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
792{
793 __u8 encrypt;
794
795 if (conn->type != ACL_LINK && conn->type != LE_LINK)
796 return;
797
798 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
799 return;
800
801 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
802 l2cap_security_cfm(conn, status, encrypt);
803
804 if (conn->security_cfm_cb)
805 conn->security_cfm_cb(conn, status);
806}
807
808static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
809 __u8 encrypt)
810{
811 if (conn->type != ACL_LINK && conn->type != LE_LINK)
812 return;
813
814 l2cap_security_cfm(conn, status, encrypt);
815
816 if (conn->security_cfm_cb)
817 conn->security_cfm_cb(conn, status);
818}
819
820/* ----- HCI callbacks ----- */
821struct hci_cb {
822 struct list_head list;
823
824 char *name;
825
826 void (*security_cfm) (struct hci_conn *conn, __u8 status,
827 __u8 encrypt);
828 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
829 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
830};
831
832static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
833{
834 struct list_head *p;
835 __u8 encrypt;
836
837 hci_proto_auth_cfm(conn, status);
838
839 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
840 return;
841
842 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
843
844 read_lock(&hci_cb_list_lock);
845 list_for_each(p, &hci_cb_list) {
846 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
847 if (cb->security_cfm)
848 cb->security_cfm(conn, status, encrypt);
849 }
850 read_unlock(&hci_cb_list_lock);
851}
852
853static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
854 __u8 encrypt)
855{
856 struct list_head *p;
857
858 if (conn->sec_level == BT_SECURITY_SDP)
859 conn->sec_level = BT_SECURITY_LOW;
860
861 if (conn->pending_sec_level > conn->sec_level)
862 conn->sec_level = conn->pending_sec_level;
863
864 hci_proto_encrypt_cfm(conn, status, encrypt);
865
866 read_lock(&hci_cb_list_lock);
867 list_for_each(p, &hci_cb_list) {
868 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
869 if (cb->security_cfm)
870 cb->security_cfm(conn, status, encrypt);
871 }
872 read_unlock(&hci_cb_list_lock);
873}
874
875static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
876{
877 struct list_head *p;
878
879 read_lock(&hci_cb_list_lock);
880 list_for_each(p, &hci_cb_list) {
881 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
882 if (cb->key_change_cfm)
883 cb->key_change_cfm(conn, status);
884 }
885 read_unlock(&hci_cb_list_lock);
886}
887
888static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
889 __u8 role)
890{
891 struct list_head *p;
892
893 read_lock(&hci_cb_list_lock);
894 list_for_each(p, &hci_cb_list) {
895 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
896 if (cb->role_switch_cfm)
897 cb->role_switch_cfm(conn, status, role);
898 }
899 read_unlock(&hci_cb_list_lock);
900}
901
902static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
903{
904 size_t parsed = 0;
905
906 if (data_len < 2)
907 return false;
908
909 while (parsed < data_len - 1) {
910 u8 field_len = data[0];
911
912 if (field_len == 0)
913 break;
914
915 parsed += field_len + 1;
916
917 if (parsed > data_len)
918 break;
919
920 if (data[1] == type)
921 return true;
922
923 data += field_len + 1;
924 }
925
926 return false;
927}
928
929static inline size_t eir_get_length(u8 *eir, size_t eir_len)
930{
931 size_t parsed = 0;
932
933 while (parsed < eir_len) {
934 u8 field_len = eir[0];
935
936 if (field_len == 0)
937 return parsed;
938
939 parsed += field_len + 1;
940 eir += field_len + 1;
941 }
942
943 return eir_len;
944}
945
946static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
947 u8 data_len)
948{
949 eir[eir_len++] = sizeof(type) + data_len;
950 eir[eir_len++] = type;
951 memcpy(&eir[eir_len], data, data_len);
952 eir_len += data_len;
953
954 return eir_len;
955}
956
957int hci_register_cb(struct hci_cb *hcb);
958int hci_unregister_cb(struct hci_cb *hcb);
959
960int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
961void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
962void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
963
964void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
965
966/* ----- HCI Sockets ----- */
967void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
968void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
969void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
970
971void hci_sock_dev_event(struct hci_dev *hdev, int event);
972
973/* Management interface */
974#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
975#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
976 BIT(BDADDR_LE_RANDOM))
977#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
978 BIT(BDADDR_LE_PUBLIC) | \
979 BIT(BDADDR_LE_RANDOM))
980
981int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
982int mgmt_index_added(struct hci_dev *hdev);
983int mgmt_index_removed(struct hci_dev *hdev);
984int mgmt_powered(struct hci_dev *hdev, u8 powered);
985int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
986int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
987int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
988int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
989 bool persistent);
990int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
991 u8 addr_type, u32 flags, u8 *name, u8 name_len,
992 u8 *dev_class);
993int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
994 u8 link_type, u8 addr_type);
995int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
996 u8 link_type, u8 addr_type, u8 status);
997int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
998 u8 addr_type, u8 status);
999int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1000int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1001 u8 status);
1002int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1003 u8 status);
1004int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1005 u8 link_type, u8 addr_type, __le32 value,
1006 u8 confirm_hint);
1007int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1008 u8 link_type, u8 addr_type, u8 status);
1009int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1010 u8 link_type, u8 addr_type, u8 status);
1011int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1012 u8 link_type, u8 addr_type);
1013int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1014 u8 link_type, u8 addr_type, u8 status);
1015int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1016 u8 link_type, u8 addr_type, u8 status);
1017int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1018 u8 addr_type, u8 status);
1019int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1020int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1021int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1022 u8 status);
1023int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1024int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1025 u8 *randomizer, u8 status);
1026int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1027int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1028 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1029 u8 ssp, u8 *eir, u16 eir_len);
1030int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1031 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1032int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1033int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1034int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1035int mgmt_interleaved_discovery(struct hci_dev *hdev);
1036int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1037int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1038
1039int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1040
1041/* HCI info for socket */
1042#define hci_pi(sk) ((struct hci_pinfo *) sk)
1043
1044struct hci_pinfo {
1045 struct bt_sock bt;
1046 struct hci_dev *hdev;
1047 struct hci_filter filter;
1048 __u32 cmsg_mask;
1049 unsigned short channel;
1050};
1051
1052/* HCI security filter */
1053#define HCI_SFLT_MAX_OGF 5
1054
1055struct hci_sec_filter {
1056 __u32 type_mask;
1057 __u32 event_mask[2];
1058 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1059};
1060
1061/* ----- HCI requests ----- */
1062#define HCI_REQ_DONE 0
1063#define HCI_REQ_PEND 1
1064#define HCI_REQ_CANCELED 2
1065
1066#define hci_req_lock(d) mutex_lock(&d->req_lock)
1067#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1068
1069void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1070
1071void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1072 u16 latency, u16 to_multiplier);
1073void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1074 __u8 ltk[16]);
1075int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1076int hci_cancel_inquiry(struct hci_dev *hdev);
1077int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1078 int timeout);
1079int hci_cancel_le_scan(struct hci_dev *hdev);
1080
1081u8 bdaddr_to_le(u8 bdaddr_type);
1082
1083#endif /* __HCI_CORE_H */