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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/idr.h>
29#include <linux/leds.h>
30#include <linux/rculist.h>
31
32#include <net/bluetooth/hci.h>
33#include <net/bluetooth/hci_sync.h>
34#include <net/bluetooth/hci_sock.h>
35
36/* HCI priority */
37#define HCI_PRIO_MAX 7
38
39/* HCI maximum id value */
40#define HCI_MAX_ID 10000
41
42/* HCI Core structures */
43struct inquiry_data {
44 bdaddr_t bdaddr;
45 __u8 pscan_rep_mode;
46 __u8 pscan_period_mode;
47 __u8 pscan_mode;
48 __u8 dev_class[3];
49 __le16 clock_offset;
50 __s8 rssi;
51 __u8 ssp_mode;
52};
53
54struct inquiry_entry {
55 struct list_head all; /* inq_cache.all */
56 struct list_head list; /* unknown or resolve */
57 enum {
58 NAME_NOT_KNOWN,
59 NAME_NEEDED,
60 NAME_PENDING,
61 NAME_KNOWN,
62 } name_state;
63 __u32 timestamp;
64 struct inquiry_data data;
65};
66
67struct discovery_state {
68 int type;
69 enum {
70 DISCOVERY_STOPPED,
71 DISCOVERY_STARTING,
72 DISCOVERY_FINDING,
73 DISCOVERY_RESOLVING,
74 DISCOVERY_STOPPING,
75 } state;
76 struct list_head all; /* All devices found during inquiry */
77 struct list_head unknown; /* Name state not known */
78 struct list_head resolve; /* Name needs to be resolved */
79 __u32 timestamp;
80 bdaddr_t last_adv_addr;
81 u8 last_adv_addr_type;
82 s8 last_adv_rssi;
83 u32 last_adv_flags;
84 u8 last_adv_data[HCI_MAX_AD_LENGTH];
85 u8 last_adv_data_len;
86 bool report_invalid_rssi;
87 bool result_filtering;
88 bool limited;
89 s8 rssi;
90 u16 uuid_count;
91 u8 (*uuids)[16];
92 unsigned long scan_start;
93 unsigned long scan_duration;
94 unsigned long name_resolve_timeout;
95};
96
97#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98
99enum suspend_tasks {
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
102
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
105
106 SUSPEND_SCAN_DISABLE,
107 SUSPEND_SCAN_ENABLE,
108 SUSPEND_DISCONNECTING,
109
110 SUSPEND_POWERING_DOWN,
111
112 SUSPEND_PREPARE_NOTIFIER,
113
114 SUSPEND_SET_ADV_FILTER,
115 __SUSPEND_NUM_TASKS
116};
117
118enum suspended_state {
119 BT_RUNNING = 0,
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
122};
123
124struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int amp_num;
128 unsigned int sco_num;
129 unsigned int iso_num;
130 unsigned int le_num;
131 unsigned int le_num_peripheral;
132};
133
134struct bdaddr_list {
135 struct list_head list;
136 bdaddr_t bdaddr;
137 u8 bdaddr_type;
138};
139
140struct codec_list {
141 struct list_head list;
142 u8 id;
143 __u16 cid;
144 __u16 vid;
145 u8 transport;
146 u8 num_caps;
147 u32 len;
148 struct hci_codec_caps caps[];
149};
150
151struct bdaddr_list_with_irk {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 peer_irk[16];
156 u8 local_irk[16];
157};
158
159/* Bitmask of connection flags */
160enum hci_conn_flags {
161 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
162 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
163};
164typedef u8 hci_conn_flags_t;
165
166struct bdaddr_list_with_flags {
167 struct list_head list;
168 bdaddr_t bdaddr;
169 u8 bdaddr_type;
170 hci_conn_flags_t flags;
171};
172
173struct bt_uuid {
174 struct list_head list;
175 u8 uuid[16];
176 u8 size;
177 u8 svc_hint;
178};
179
180struct blocked_key {
181 struct list_head list;
182 struct rcu_head rcu;
183 u8 type;
184 u8 val[16];
185};
186
187struct smp_csrk {
188 bdaddr_t bdaddr;
189 u8 bdaddr_type;
190 u8 type;
191 u8 val[16];
192};
193
194struct smp_ltk {
195 struct list_head list;
196 struct rcu_head rcu;
197 bdaddr_t bdaddr;
198 u8 bdaddr_type;
199 u8 authenticated;
200 u8 type;
201 u8 enc_size;
202 __le16 ediv;
203 __le64 rand;
204 u8 val[16];
205};
206
207struct smp_irk {
208 struct list_head list;
209 struct rcu_head rcu;
210 bdaddr_t rpa;
211 bdaddr_t bdaddr;
212 u8 addr_type;
213 u8 val[16];
214};
215
216struct link_key {
217 struct list_head list;
218 struct rcu_head rcu;
219 bdaddr_t bdaddr;
220 u8 type;
221 u8 val[HCI_LINK_KEY_SIZE];
222 u8 pin_len;
223};
224
225struct oob_data {
226 struct list_head list;
227 bdaddr_t bdaddr;
228 u8 bdaddr_type;
229 u8 present;
230 u8 hash192[16];
231 u8 rand192[16];
232 u8 hash256[16];
233 u8 rand256[16];
234};
235
236struct adv_info {
237 struct list_head list;
238 bool enabled;
239 bool pending;
240 bool periodic;
241 __u8 mesh;
242 __u8 instance;
243 __u32 flags;
244 __u16 timeout;
245 __u16 remaining_time;
246 __u16 duration;
247 __u16 adv_data_len;
248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
249 bool adv_data_changed;
250 __u16 scan_rsp_len;
251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
252 bool scan_rsp_changed;
253 __u16 per_adv_data_len;
254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
255 __s8 tx_power;
256 __u32 min_interval;
257 __u32 max_interval;
258 bdaddr_t random_addr;
259 bool rpa_expired;
260 struct delayed_work rpa_expired_cb;
261};
262
263#define HCI_MAX_ADV_INSTANCES 5
264#define HCI_DEFAULT_ADV_DURATION 2
265
266#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
267
268#define DATA_CMP(_d1, _l1, _d2, _l2) \
269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
270
271#define ADV_DATA_CMP(_adv, _data, _len) \
272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
273
274#define SCAN_RSP_CMP(_adv, _data, _len) \
275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
276
277struct monitored_device {
278 struct list_head list;
279
280 bdaddr_t bdaddr;
281 __u8 addr_type;
282 __u16 handle;
283 bool notified;
284};
285
286struct adv_pattern {
287 struct list_head list;
288 __u8 ad_type;
289 __u8 offset;
290 __u8 length;
291 __u8 value[HCI_MAX_AD_LENGTH];
292};
293
294struct adv_rssi_thresholds {
295 __s8 low_threshold;
296 __s8 high_threshold;
297 __u16 low_threshold_timeout;
298 __u16 high_threshold_timeout;
299 __u8 sampling_period;
300};
301
302struct adv_monitor {
303 struct list_head patterns;
304 struct adv_rssi_thresholds rssi;
305 __u16 handle;
306
307 enum {
308 ADV_MONITOR_STATE_NOT_REGISTERED,
309 ADV_MONITOR_STATE_REGISTERED,
310 ADV_MONITOR_STATE_OFFLOADED
311 } state;
312};
313
314#define HCI_MIN_ADV_MONITOR_HANDLE 1
315#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
316#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
317#define HCI_ADV_MONITOR_EXT_NONE 1
318#define HCI_ADV_MONITOR_EXT_MSFT 2
319
320#define HCI_MAX_SHORT_NAME_LENGTH 10
321
322#define HCI_CONN_HANDLE_UNSET 0xffff
323#define HCI_CONN_HANDLE_MAX 0x0eff
324
325/* Min encryption key size to match with SMP */
326#define HCI_MIN_ENC_KEY_SIZE 7
327
328/* Default LE RPA expiry time, 15 minutes */
329#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
330
331/* Default min/max age of connection information (1s/3s) */
332#define DEFAULT_CONN_INFO_MIN_AGE 1000
333#define DEFAULT_CONN_INFO_MAX_AGE 3000
334/* Default authenticated payload timeout 30s */
335#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
336
337struct amp_assoc {
338 __u16 len;
339 __u16 offset;
340 __u16 rem_len;
341 __u16 len_so_far;
342 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
343};
344
345#define HCI_MAX_PAGES 3
346
347struct hci_dev {
348 struct list_head list;
349 struct mutex lock;
350
351 char name[8];
352 unsigned long flags;
353 __u16 id;
354 __u8 bus;
355 __u8 dev_type;
356 bdaddr_t bdaddr;
357 bdaddr_t setup_addr;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
361 __u8 adv_addr_type;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
365 __u16 appearance;
366 __u8 dev_class[3];
367 __u8 major_class;
368 __u8 minor_class;
369 __u8 max_page;
370 __u8 features[HCI_MAX_PAGES][8];
371 __u8 le_features[8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
375 __u8 le_states[8];
376 __u8 mesh_ad_types[16];
377 __u8 mesh_send_ref;
378 __u8 commands[64];
379 __u8 hci_ver;
380 __u16 hci_rev;
381 __u8 lmp_ver;
382 __u16 manufacturer;
383 __u16 lmp_subver;
384 __u16 voice_setting;
385 __u8 num_iac;
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
388 __u8 io_capability;
389 __s8 inq_tx_power;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
393 __u8 page_scan_type;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
397 __u8 le_scan_type;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
412 __u16 le_def_tx_len;
413 __u16 le_def_tx_time;
414 __u16 le_max_tx_len;
415 __u16 le_max_tx_time;
416 __u16 le_max_rx_len;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
426 __u8 pairing_opts;
427 __u8 ssp_debug_mode;
428 __u8 hw_error_code;
429 __u32 clock;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
433
434 __u16 devid_source;
435 __u16 devid_vendor;
436 __u16 devid_product;
437 __u16 devid_version;
438
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
445 __u16 def_br_lsto;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
451
452 __u16 pkt_type;
453 __u16 esco_type;
454 __u16 link_policy;
455 __u16 link_mode;
456
457 __u32 idle_timeout;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
460
461 __u8 amp_status;
462 __u32 amp_total_bw;
463 __u32 amp_max_bw;
464 __u32 amp_min_latency;
465 __u32 amp_max_pdu;
466 __u8 amp_type;
467 __u16 amp_pal_cap;
468 __u16 amp_assoc_size;
469 __u32 amp_max_flush_to;
470 __u32 amp_be_flush_to;
471
472 struct amp_assoc loc_assoc;
473
474 __u8 flow_ctl_mode;
475
476 unsigned int auto_accept_delay;
477
478 unsigned long quirks;
479
480 atomic_t cmd_cnt;
481 unsigned int acl_cnt;
482 unsigned int sco_cnt;
483 unsigned int le_cnt;
484 unsigned int iso_cnt;
485
486 unsigned int acl_mtu;
487 unsigned int sco_mtu;
488 unsigned int le_mtu;
489 unsigned int iso_mtu;
490 unsigned int acl_pkts;
491 unsigned int sco_pkts;
492 unsigned int le_pkts;
493 unsigned int iso_pkts;
494
495 __u16 block_len;
496 __u16 block_mtu;
497 __u16 num_blocks;
498 __u16 block_cnt;
499
500 unsigned long acl_last_tx;
501 unsigned long sco_last_tx;
502 unsigned long le_last_tx;
503
504 __u8 le_tx_def_phys;
505 __u8 le_rx_def_phys;
506
507 struct workqueue_struct *workqueue;
508 struct workqueue_struct *req_workqueue;
509
510 struct work_struct power_on;
511 struct delayed_work power_off;
512 struct work_struct error_reset;
513 struct work_struct cmd_sync_work;
514 struct list_head cmd_sync_work_list;
515 struct mutex cmd_sync_work_lock;
516 struct work_struct cmd_sync_cancel_work;
517 struct work_struct reenable_adv_work;
518
519 __u16 discov_timeout;
520 struct delayed_work discov_off;
521
522 struct delayed_work service_cache;
523
524 struct delayed_work cmd_timer;
525 struct delayed_work ncmd_timer;
526
527 struct work_struct rx_work;
528 struct work_struct cmd_work;
529 struct work_struct tx_work;
530
531 struct delayed_work le_scan_disable;
532 struct delayed_work le_scan_restart;
533
534 struct sk_buff_head rx_q;
535 struct sk_buff_head raw_q;
536 struct sk_buff_head cmd_q;
537
538 struct sk_buff *sent_cmd;
539 struct sk_buff *recv_event;
540
541 struct mutex req_lock;
542 wait_queue_head_t req_wait_q;
543 __u32 req_status;
544 __u32 req_result;
545 struct sk_buff *req_skb;
546
547 void *smp_data;
548 void *smp_bredr_data;
549
550 struct discovery_state discovery;
551
552 int discovery_old_state;
553 bool discovery_paused;
554 int advertising_old_state;
555 bool advertising_paused;
556
557 struct notifier_block suspend_notifier;
558 enum suspended_state suspend_state_next;
559 enum suspended_state suspend_state;
560 bool scanning_paused;
561 bool suspended;
562 u8 wake_reason;
563 bdaddr_t wake_addr;
564 u8 wake_addr_type;
565
566 struct hci_conn_hash conn_hash;
567
568 struct list_head mesh_pending;
569 struct list_head mgmt_pending;
570 struct list_head reject_list;
571 struct list_head accept_list;
572 struct list_head uuids;
573 struct list_head link_keys;
574 struct list_head long_term_keys;
575 struct list_head identity_resolving_keys;
576 struct list_head remote_oob_data;
577 struct list_head le_accept_list;
578 struct list_head le_resolv_list;
579 struct list_head le_conn_params;
580 struct list_head pend_le_conns;
581 struct list_head pend_le_reports;
582 struct list_head blocked_keys;
583 struct list_head local_codecs;
584
585 struct hci_dev_stats stat;
586
587 atomic_t promisc;
588
589 const char *hw_info;
590 const char *fw_info;
591 struct dentry *debugfs;
592
593 struct device dev;
594
595 struct rfkill *rfkill;
596
597 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
598 hci_conn_flags_t conn_flags;
599
600 __s8 adv_tx_power;
601 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
602 __u8 adv_data_len;
603 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
604 __u8 scan_rsp_data_len;
605 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
606 __u8 per_adv_data_len;
607
608 struct list_head adv_instances;
609 unsigned int adv_instance_cnt;
610 __u8 cur_adv_instance;
611 __u16 adv_instance_timeout;
612 struct delayed_work adv_instance_expire;
613
614 struct idr adv_monitors_idr;
615 unsigned int adv_monitors_cnt;
616
617 __u8 irk[16];
618 __u32 rpa_timeout;
619 struct delayed_work rpa_expired;
620 bdaddr_t rpa;
621
622 struct delayed_work mesh_send_done;
623
624 enum {
625 INTERLEAVE_SCAN_NONE,
626 INTERLEAVE_SCAN_NO_FILTER,
627 INTERLEAVE_SCAN_ALLOWLIST
628 } interleave_scan_state;
629
630 struct delayed_work interleave_scan;
631
632 struct list_head monitored_devices;
633 bool advmon_pend_notify;
634
635#if IS_ENABLED(CONFIG_BT_LEDS)
636 struct led_trigger *power_led;
637#endif
638
639#if IS_ENABLED(CONFIG_BT_MSFTEXT)
640 __u16 msft_opcode;
641 void *msft_data;
642 bool msft_curve_validity;
643#endif
644
645#if IS_ENABLED(CONFIG_BT_AOSPEXT)
646 bool aosp_capable;
647 bool aosp_quality_report;
648#endif
649
650 int (*open)(struct hci_dev *hdev);
651 int (*close)(struct hci_dev *hdev);
652 int (*flush)(struct hci_dev *hdev);
653 int (*setup)(struct hci_dev *hdev);
654 int (*shutdown)(struct hci_dev *hdev);
655 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
656 void (*notify)(struct hci_dev *hdev, unsigned int evt);
657 void (*hw_error)(struct hci_dev *hdev, u8 code);
658 int (*post_init)(struct hci_dev *hdev);
659 int (*set_diag)(struct hci_dev *hdev, bool enable);
660 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
661 void (*cmd_timeout)(struct hci_dev *hdev);
662 void (*reset)(struct hci_dev *hdev);
663 bool (*wakeup)(struct hci_dev *hdev);
664 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
665 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
666 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
667 struct bt_codec *codec, __u8 *vnd_len,
668 __u8 **vnd_data);
669};
670
671#define HCI_PHY_HANDLE(handle) (handle & 0xff)
672
673enum conn_reasons {
674 CONN_REASON_PAIR_DEVICE,
675 CONN_REASON_L2CAP_CHAN,
676 CONN_REASON_SCO_CONNECT,
677 CONN_REASON_ISO_CONNECT,
678};
679
680struct hci_conn {
681 struct list_head list;
682
683 atomic_t refcnt;
684
685 bdaddr_t dst;
686 __u8 dst_type;
687 bdaddr_t src;
688 __u8 src_type;
689 bdaddr_t init_addr;
690 __u8 init_addr_type;
691 bdaddr_t resp_addr;
692 __u8 resp_addr_type;
693 __u8 adv_instance;
694 __u16 handle;
695 __u16 sync_handle;
696 __u16 state;
697 __u8 mode;
698 __u8 type;
699 __u8 role;
700 bool out;
701 __u8 attempt;
702 __u8 dev_class[3];
703 __u8 features[HCI_MAX_PAGES][8];
704 __u16 pkt_type;
705 __u16 link_policy;
706 __u8 key_type;
707 __u8 auth_type;
708 __u8 sec_level;
709 __u8 pending_sec_level;
710 __u8 pin_length;
711 __u8 enc_key_size;
712 __u8 io_capability;
713 __u32 passkey_notify;
714 __u8 passkey_entered;
715 __u16 disc_timeout;
716 __u16 conn_timeout;
717 __u16 setting;
718 __u16 auth_payload_timeout;
719 __u16 le_conn_min_interval;
720 __u16 le_conn_max_interval;
721 __u16 le_conn_interval;
722 __u16 le_conn_latency;
723 __u16 le_supv_timeout;
724 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
725 __u8 le_adv_data_len;
726 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
727 __u8 le_per_adv_data_len;
728 __u8 le_tx_phy;
729 __u8 le_rx_phy;
730 __s8 rssi;
731 __s8 tx_power;
732 __s8 max_tx_power;
733 struct bt_iso_qos iso_qos;
734 unsigned long flags;
735
736 enum conn_reasons conn_reason;
737
738 __u32 clock;
739 __u16 clock_accuracy;
740
741 unsigned long conn_info_timestamp;
742
743 __u8 remote_cap;
744 __u8 remote_auth;
745 __u8 remote_id;
746
747 unsigned int sent;
748
749 struct sk_buff_head data_q;
750 struct list_head chan_list;
751
752 struct delayed_work disc_work;
753 struct delayed_work auto_accept_work;
754 struct delayed_work idle_work;
755 struct delayed_work le_conn_timeout;
756 struct work_struct le_scan_cleanup;
757
758 struct device dev;
759 struct dentry *debugfs;
760
761 struct hci_dev *hdev;
762 void *l2cap_data;
763 void *sco_data;
764 void *iso_data;
765 struct amp_mgr *amp_mgr;
766
767 struct hci_conn *link;
768 struct bt_codec codec;
769
770 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
771 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
772 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
773
774 void (*cleanup)(struct hci_conn *conn);
775};
776
777struct hci_chan {
778 struct list_head list;
779 __u16 handle;
780 struct hci_conn *conn;
781 struct sk_buff_head data_q;
782 unsigned int sent;
783 __u8 state;
784 bool amp;
785};
786
787struct hci_conn_params {
788 struct list_head list;
789 struct list_head action;
790
791 bdaddr_t addr;
792 u8 addr_type;
793
794 u16 conn_min_interval;
795 u16 conn_max_interval;
796 u16 conn_latency;
797 u16 supervision_timeout;
798
799 enum {
800 HCI_AUTO_CONN_DISABLED,
801 HCI_AUTO_CONN_REPORT,
802 HCI_AUTO_CONN_DIRECT,
803 HCI_AUTO_CONN_ALWAYS,
804 HCI_AUTO_CONN_LINK_LOSS,
805 HCI_AUTO_CONN_EXPLICIT,
806 } auto_connect;
807
808 struct hci_conn *conn;
809 bool explicit_connect;
810 hci_conn_flags_t flags;
811 u8 privacy_mode;
812};
813
814extern struct list_head hci_dev_list;
815extern struct list_head hci_cb_list;
816extern rwlock_t hci_dev_list_lock;
817extern struct mutex hci_cb_list_lock;
818
819#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
820#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
821#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
822#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
823#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
824#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
825#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
826
827#define hci_dev_clear_volatile_flags(hdev) \
828 do { \
829 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
830 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
831 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
832 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
833 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
834 } while (0)
835
836#define hci_dev_le_state_simultaneous(hdev) \
837 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
838 (hdev->le_states[4] & 0x08) && /* Central */ \
839 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
840 (hdev->le_states[3] & 0x10)) /* Simultaneous */
841
842/* ----- HCI interface to upper protocols ----- */
843int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
844int l2cap_disconn_ind(struct hci_conn *hcon);
845void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
846
847#if IS_ENABLED(CONFIG_BT_BREDR)
848int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
849void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
850#else
851static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
852 __u8 *flags)
853{
854 return 0;
855}
856
857static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
858{
859}
860#endif
861
862#if IS_ENABLED(CONFIG_BT_LE)
863int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
864void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
865#else
866static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 __u8 *flags)
868{
869 return 0;
870}
871static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
872 u16 flags)
873{
874}
875#endif
876
877/* ----- Inquiry cache ----- */
878#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
879#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
880
881static inline void discovery_init(struct hci_dev *hdev)
882{
883 hdev->discovery.state = DISCOVERY_STOPPED;
884 INIT_LIST_HEAD(&hdev->discovery.all);
885 INIT_LIST_HEAD(&hdev->discovery.unknown);
886 INIT_LIST_HEAD(&hdev->discovery.resolve);
887 hdev->discovery.report_invalid_rssi = true;
888 hdev->discovery.rssi = HCI_RSSI_INVALID;
889}
890
891static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
892{
893 hdev->discovery.result_filtering = false;
894 hdev->discovery.report_invalid_rssi = true;
895 hdev->discovery.rssi = HCI_RSSI_INVALID;
896 hdev->discovery.uuid_count = 0;
897 kfree(hdev->discovery.uuids);
898 hdev->discovery.uuids = NULL;
899 hdev->discovery.scan_start = 0;
900 hdev->discovery.scan_duration = 0;
901}
902
903bool hci_discovery_active(struct hci_dev *hdev);
904
905void hci_discovery_set_state(struct hci_dev *hdev, int state);
906
907static inline int inquiry_cache_empty(struct hci_dev *hdev)
908{
909 return list_empty(&hdev->discovery.all);
910}
911
912static inline long inquiry_cache_age(struct hci_dev *hdev)
913{
914 struct discovery_state *c = &hdev->discovery;
915 return jiffies - c->timestamp;
916}
917
918static inline long inquiry_entry_age(struct inquiry_entry *e)
919{
920 return jiffies - e->timestamp;
921}
922
923struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
924 bdaddr_t *bdaddr);
925struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
926 bdaddr_t *bdaddr);
927struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
928 bdaddr_t *bdaddr,
929 int state);
930void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
931 struct inquiry_entry *ie);
932u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
933 bool name_known);
934void hci_inquiry_cache_flush(struct hci_dev *hdev);
935
936/* ----- HCI Connections ----- */
937enum {
938 HCI_CONN_AUTH_PEND,
939 HCI_CONN_REAUTH_PEND,
940 HCI_CONN_ENCRYPT_PEND,
941 HCI_CONN_RSWITCH_PEND,
942 HCI_CONN_MODE_CHANGE_PEND,
943 HCI_CONN_SCO_SETUP_PEND,
944 HCI_CONN_MGMT_CONNECTED,
945 HCI_CONN_SSP_ENABLED,
946 HCI_CONN_SC_ENABLED,
947 HCI_CONN_AES_CCM,
948 HCI_CONN_POWER_SAVE,
949 HCI_CONN_FLUSH_KEY,
950 HCI_CONN_ENCRYPT,
951 HCI_CONN_AUTH,
952 HCI_CONN_SECURE,
953 HCI_CONN_FIPS,
954 HCI_CONN_STK_ENCRYPT,
955 HCI_CONN_AUTH_INITIATOR,
956 HCI_CONN_DROP,
957 HCI_CONN_PARAM_REMOVAL_PEND,
958 HCI_CONN_NEW_LINK_KEY,
959 HCI_CONN_SCANNING,
960 HCI_CONN_AUTH_FAILURE,
961 HCI_CONN_PER_ADV,
962};
963
964static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
965{
966 struct hci_dev *hdev = conn->hdev;
967 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
968 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
969}
970
971static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
972{
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
975 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
976}
977
978static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
979{
980 struct hci_conn_hash *h = &hdev->conn_hash;
981 list_add_rcu(&c->list, &h->list);
982 switch (c->type) {
983 case ACL_LINK:
984 h->acl_num++;
985 break;
986 case AMP_LINK:
987 h->amp_num++;
988 break;
989 case LE_LINK:
990 h->le_num++;
991 if (c->role == HCI_ROLE_SLAVE)
992 h->le_num_peripheral++;
993 break;
994 case SCO_LINK:
995 case ESCO_LINK:
996 h->sco_num++;
997 break;
998 case ISO_LINK:
999 h->iso_num++;
1000 break;
1001 }
1002}
1003
1004static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1005{
1006 struct hci_conn_hash *h = &hdev->conn_hash;
1007
1008 list_del_rcu(&c->list);
1009 synchronize_rcu();
1010
1011 switch (c->type) {
1012 case ACL_LINK:
1013 h->acl_num--;
1014 break;
1015 case AMP_LINK:
1016 h->amp_num--;
1017 break;
1018 case LE_LINK:
1019 h->le_num--;
1020 if (c->role == HCI_ROLE_SLAVE)
1021 h->le_num_peripheral--;
1022 break;
1023 case SCO_LINK:
1024 case ESCO_LINK:
1025 h->sco_num--;
1026 break;
1027 case ISO_LINK:
1028 h->iso_num--;
1029 break;
1030 }
1031}
1032
1033static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1034{
1035 struct hci_conn_hash *h = &hdev->conn_hash;
1036 switch (type) {
1037 case ACL_LINK:
1038 return h->acl_num;
1039 case AMP_LINK:
1040 return h->amp_num;
1041 case LE_LINK:
1042 return h->le_num;
1043 case SCO_LINK:
1044 case ESCO_LINK:
1045 return h->sco_num;
1046 case ISO_LINK:
1047 return h->iso_num;
1048 default:
1049 return 0;
1050 }
1051}
1052
1053static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1054{
1055 struct hci_conn_hash *c = &hdev->conn_hash;
1056
1057 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1058}
1059
1060static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1061{
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1063 struct hci_conn *c;
1064 __u8 type = INVALID_LINK;
1065
1066 rcu_read_lock();
1067
1068 list_for_each_entry_rcu(c, &h->list, list) {
1069 if (c->handle == handle) {
1070 type = c->type;
1071 break;
1072 }
1073 }
1074
1075 rcu_read_unlock();
1076
1077 return type;
1078}
1079
1080static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1081 bdaddr_t *ba,
1082 __u8 big, __u8 bis)
1083{
1084 struct hci_conn_hash *h = &hdev->conn_hash;
1085 struct hci_conn *c;
1086
1087 rcu_read_lock();
1088
1089 list_for_each_entry_rcu(c, &h->list, list) {
1090 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1091 continue;
1092
1093 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1094 rcu_read_unlock();
1095 return c;
1096 }
1097 }
1098 rcu_read_unlock();
1099
1100 return NULL;
1101}
1102
1103static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1104 __u16 handle)
1105{
1106 struct hci_conn_hash *h = &hdev->conn_hash;
1107 struct hci_conn *c;
1108
1109 rcu_read_lock();
1110
1111 list_for_each_entry_rcu(c, &h->list, list) {
1112 if (c->handle == handle) {
1113 rcu_read_unlock();
1114 return c;
1115 }
1116 }
1117 rcu_read_unlock();
1118
1119 return NULL;
1120}
1121
1122static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1123 __u8 type, bdaddr_t *ba)
1124{
1125 struct hci_conn_hash *h = &hdev->conn_hash;
1126 struct hci_conn *c;
1127
1128 rcu_read_lock();
1129
1130 list_for_each_entry_rcu(c, &h->list, list) {
1131 if (c->type == type && !bacmp(&c->dst, ba)) {
1132 rcu_read_unlock();
1133 return c;
1134 }
1135 }
1136
1137 rcu_read_unlock();
1138
1139 return NULL;
1140}
1141
1142static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1143 bdaddr_t *ba,
1144 __u8 ba_type)
1145{
1146 struct hci_conn_hash *h = &hdev->conn_hash;
1147 struct hci_conn *c;
1148
1149 rcu_read_lock();
1150
1151 list_for_each_entry_rcu(c, &h->list, list) {
1152 if (c->type != LE_LINK)
1153 continue;
1154
1155 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1156 rcu_read_unlock();
1157 return c;
1158 }
1159 }
1160
1161 rcu_read_unlock();
1162
1163 return NULL;
1164}
1165
1166static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1167 bdaddr_t *ba,
1168 __u8 ba_type)
1169{
1170 struct hci_conn_hash *h = &hdev->conn_hash;
1171 struct hci_conn *c;
1172
1173 rcu_read_lock();
1174
1175 list_for_each_entry_rcu(c, &h->list, list) {
1176 if (c->type != ISO_LINK)
1177 continue;
1178
1179 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1180 rcu_read_unlock();
1181 return c;
1182 }
1183 }
1184
1185 rcu_read_unlock();
1186
1187 return NULL;
1188}
1189
1190static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1191 __u8 handle)
1192{
1193 struct hci_conn_hash *h = &hdev->conn_hash;
1194 struct hci_conn *c;
1195
1196 rcu_read_lock();
1197
1198 list_for_each_entry_rcu(c, &h->list, list) {
1199 if (c->type != ISO_LINK)
1200 continue;
1201
1202 if (handle == c->iso_qos.cig) {
1203 rcu_read_unlock();
1204 return c;
1205 }
1206 }
1207
1208 rcu_read_unlock();
1209
1210 return NULL;
1211}
1212
1213static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1214 __u8 handle)
1215{
1216 struct hci_conn_hash *h = &hdev->conn_hash;
1217 struct hci_conn *c;
1218
1219 rcu_read_lock();
1220
1221 list_for_each_entry_rcu(c, &h->list, list) {
1222 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1223 continue;
1224
1225 if (handle == c->iso_qos.big) {
1226 rcu_read_unlock();
1227 return c;
1228 }
1229 }
1230
1231 rcu_read_unlock();
1232
1233 return NULL;
1234}
1235
1236static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1237 __u8 type, __u16 state)
1238{
1239 struct hci_conn_hash *h = &hdev->conn_hash;
1240 struct hci_conn *c;
1241
1242 rcu_read_lock();
1243
1244 list_for_each_entry_rcu(c, &h->list, list) {
1245 if (c->type == type && c->state == state) {
1246 rcu_read_unlock();
1247 return c;
1248 }
1249 }
1250
1251 rcu_read_unlock();
1252
1253 return NULL;
1254}
1255
1256typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1257static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1258 hci_conn_func_t func, __u8 type,
1259 __u16 state, void *data)
1260{
1261 struct hci_conn_hash *h = &hdev->conn_hash;
1262 struct hci_conn *c;
1263
1264 if (!func)
1265 return;
1266
1267 rcu_read_lock();
1268
1269 list_for_each_entry_rcu(c, &h->list, list) {
1270 if (c->type == type && c->state == state)
1271 func(c, data);
1272 }
1273
1274 rcu_read_unlock();
1275}
1276
1277static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1278{
1279 struct hci_conn_hash *h = &hdev->conn_hash;
1280 struct hci_conn *c;
1281
1282 rcu_read_lock();
1283
1284 list_for_each_entry_rcu(c, &h->list, list) {
1285 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1286 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1287 rcu_read_unlock();
1288 return c;
1289 }
1290 }
1291
1292 rcu_read_unlock();
1293
1294 return NULL;
1295}
1296
1297int hci_disconnect(struct hci_conn *conn, __u8 reason);
1298bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1299void hci_sco_setup(struct hci_conn *conn, __u8 status);
1300bool hci_iso_setup_path(struct hci_conn *conn);
1301int hci_le_create_cis(struct hci_conn *conn);
1302
1303struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1304 u8 role);
1305int hci_conn_del(struct hci_conn *conn);
1306void hci_conn_hash_flush(struct hci_dev *hdev);
1307void hci_conn_check_pending(struct hci_dev *hdev);
1308
1309struct hci_chan *hci_chan_create(struct hci_conn *conn);
1310void hci_chan_del(struct hci_chan *chan);
1311void hci_chan_list_flush(struct hci_conn *conn);
1312struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1313
1314struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1315 u8 dst_type, u8 sec_level,
1316 u16 conn_timeout,
1317 enum conn_reasons conn_reason);
1318struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1319 u8 dst_type, bool dst_resolved, u8 sec_level,
1320 u16 conn_timeout, u8 role);
1321struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1322 u8 sec_level, u8 auth_type,
1323 enum conn_reasons conn_reason);
1324struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1325 __u16 setting, struct bt_codec *codec);
1326struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1327 __u8 dst_type, struct bt_iso_qos *qos);
1328struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1329 __u8 dst_type, struct bt_iso_qos *qos);
1330struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1331 __u8 dst_type, struct bt_iso_qos *qos,
1332 __u8 data_len, __u8 *data);
1333int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1334 __u8 sid);
1335int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1336 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1337int hci_conn_check_link_mode(struct hci_conn *conn);
1338int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1339int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1340 bool initiator);
1341int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1342
1343void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1344
1345void hci_conn_failed(struct hci_conn *conn, u8 status);
1346
1347/*
1348 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1349 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1350 * working or anything else. They just guarantee that the object is available
1351 * and can be dereferenced. So you can use its locks, local variables and any
1352 * other constant data.
1353 * Before accessing runtime data, you _must_ lock the object and then check that
1354 * it is still running. As soon as you release the locks, the connection might
1355 * get dropped, though.
1356 *
1357 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1358 * how long the underlying connection is held. So every channel that runs on the
1359 * hci_conn object calls this to prevent the connection from disappearing. As
1360 * long as you hold a device, you must also guarantee that you have a valid
1361 * reference to the device via hci_conn_get() (or the initial reference from
1362 * hci_conn_add()).
1363 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1364 * break because nobody cares for that. But this means, we cannot use
1365 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1366 */
1367
1368static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1369{
1370 get_device(&conn->dev);
1371 return conn;
1372}
1373
1374static inline void hci_conn_put(struct hci_conn *conn)
1375{
1376 put_device(&conn->dev);
1377}
1378
1379static inline void hci_conn_hold(struct hci_conn *conn)
1380{
1381 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1382
1383 atomic_inc(&conn->refcnt);
1384 cancel_delayed_work(&conn->disc_work);
1385}
1386
1387static inline void hci_conn_drop(struct hci_conn *conn)
1388{
1389 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1390
1391 if (atomic_dec_and_test(&conn->refcnt)) {
1392 unsigned long timeo;
1393
1394 switch (conn->type) {
1395 case ACL_LINK:
1396 case LE_LINK:
1397 cancel_delayed_work(&conn->idle_work);
1398 if (conn->state == BT_CONNECTED) {
1399 timeo = conn->disc_timeout;
1400 if (!conn->out)
1401 timeo *= 2;
1402 } else {
1403 timeo = 0;
1404 }
1405 break;
1406
1407 case AMP_LINK:
1408 timeo = conn->disc_timeout;
1409 break;
1410
1411 default:
1412 timeo = 0;
1413 break;
1414 }
1415
1416 cancel_delayed_work(&conn->disc_work);
1417 queue_delayed_work(conn->hdev->workqueue,
1418 &conn->disc_work, timeo);
1419 }
1420}
1421
1422/* ----- HCI Devices ----- */
1423static inline void hci_dev_put(struct hci_dev *d)
1424{
1425 BT_DBG("%s orig refcnt %d", d->name,
1426 kref_read(&d->dev.kobj.kref));
1427
1428 put_device(&d->dev);
1429}
1430
1431static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1432{
1433 BT_DBG("%s orig refcnt %d", d->name,
1434 kref_read(&d->dev.kobj.kref));
1435
1436 get_device(&d->dev);
1437 return d;
1438}
1439
1440#define hci_dev_lock(d) mutex_lock(&d->lock)
1441#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1442
1443#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1444#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1445
1446static inline void *hci_get_drvdata(struct hci_dev *hdev)
1447{
1448 return dev_get_drvdata(&hdev->dev);
1449}
1450
1451static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1452{
1453 dev_set_drvdata(&hdev->dev, data);
1454}
1455
1456static inline void *hci_get_priv(struct hci_dev *hdev)
1457{
1458 return (char *)hdev + sizeof(*hdev);
1459}
1460
1461struct hci_dev *hci_dev_get(int index);
1462struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1463
1464struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1465
1466static inline struct hci_dev *hci_alloc_dev(void)
1467{
1468 return hci_alloc_dev_priv(0);
1469}
1470
1471void hci_free_dev(struct hci_dev *hdev);
1472int hci_register_dev(struct hci_dev *hdev);
1473void hci_unregister_dev(struct hci_dev *hdev);
1474void hci_release_dev(struct hci_dev *hdev);
1475int hci_register_suspend_notifier(struct hci_dev *hdev);
1476int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1477int hci_suspend_dev(struct hci_dev *hdev);
1478int hci_resume_dev(struct hci_dev *hdev);
1479int hci_reset_dev(struct hci_dev *hdev);
1480int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1481int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1482__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1483__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1484
1485static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1486{
1487#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1488 hdev->msft_opcode = opcode;
1489#endif
1490}
1491
1492static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1493{
1494#if IS_ENABLED(CONFIG_BT_AOSPEXT)
1495 hdev->aosp_capable = true;
1496#endif
1497}
1498
1499int hci_dev_open(__u16 dev);
1500int hci_dev_close(__u16 dev);
1501int hci_dev_do_close(struct hci_dev *hdev);
1502int hci_dev_reset(__u16 dev);
1503int hci_dev_reset_stat(__u16 dev);
1504int hci_dev_cmd(unsigned int cmd, void __user *arg);
1505int hci_get_dev_list(void __user *arg);
1506int hci_get_dev_info(void __user *arg);
1507int hci_get_conn_list(void __user *arg);
1508int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1509int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1510int hci_inquiry(void __user *arg);
1511
1512struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1513 bdaddr_t *bdaddr, u8 type);
1514struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1515 struct list_head *list, bdaddr_t *bdaddr,
1516 u8 type);
1517struct bdaddr_list_with_flags *
1518hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1519 u8 type);
1520int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1521int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1522 u8 type, u8 *peer_irk, u8 *local_irk);
1523int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1524 u8 type, u32 flags);
1525int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1526int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1527 u8 type);
1528int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1529 u8 type);
1530void hci_bdaddr_list_clear(struct list_head *list);
1531
1532struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1533 bdaddr_t *addr, u8 addr_type);
1534struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1535 bdaddr_t *addr, u8 addr_type);
1536void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1537void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1538
1539struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1540 bdaddr_t *addr,
1541 u8 addr_type);
1542
1543void hci_uuids_clear(struct hci_dev *hdev);
1544
1545void hci_link_keys_clear(struct hci_dev *hdev);
1546struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1547struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1548 bdaddr_t *bdaddr, u8 *val, u8 type,
1549 u8 pin_len, bool *persistent);
1550struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1551 u8 addr_type, u8 type, u8 authenticated,
1552 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1553struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 addr_type, u8 role);
1555int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1556void hci_smp_ltks_clear(struct hci_dev *hdev);
1557int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1558
1559struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1560struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1561 u8 addr_type);
1562struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1563 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1564void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1565bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1566void hci_blocked_keys_clear(struct hci_dev *hdev);
1567void hci_smp_irks_clear(struct hci_dev *hdev);
1568
1569bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1570
1571void hci_remote_oob_data_clear(struct hci_dev *hdev);
1572struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1573 bdaddr_t *bdaddr, u8 bdaddr_type);
1574int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1575 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1576 u8 *hash256, u8 *rand256);
1577int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1578 u8 bdaddr_type);
1579
1580void hci_adv_instances_clear(struct hci_dev *hdev);
1581struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1582struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1583struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1584 u32 flags, u16 adv_data_len, u8 *adv_data,
1585 u16 scan_rsp_len, u8 *scan_rsp_data,
1586 u16 timeout, u16 duration, s8 tx_power,
1587 u32 min_interval, u32 max_interval,
1588 u8 mesh_handle);
1589struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1590 u32 flags, u8 data_len, u8 *data,
1591 u32 min_interval, u32 max_interval);
1592int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1593 u16 adv_data_len, u8 *adv_data,
1594 u16 scan_rsp_len, u8 *scan_rsp_data);
1595int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1596void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1597u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1598bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1599
1600void hci_adv_monitors_clear(struct hci_dev *hdev);
1601void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1602int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1603int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1604int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1605bool hci_is_adv_monitoring(struct hci_dev *hdev);
1606int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1607
1608void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1609
1610void hci_init_sysfs(struct hci_dev *hdev);
1611void hci_conn_init_sysfs(struct hci_conn *conn);
1612void hci_conn_add_sysfs(struct hci_conn *conn);
1613void hci_conn_del_sysfs(struct hci_conn *conn);
1614
1615#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1616
1617/* ----- LMP capabilities ----- */
1618#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1619#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1620#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1621#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1622#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1623#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1624#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1625#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1626#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1627#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1628#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1629#define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1630#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1631#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1632#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1633#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1634#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1635#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1636#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1637#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1638#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1639#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1640#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1641#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1642
1643/* ----- Extended LMP capabilities ----- */
1644#define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1645#define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1646#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1647#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1648#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1649#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1650
1651/* ----- Host capabilities ----- */
1652#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1653#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1654#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1655#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1656
1657#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1658 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1659#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1660 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1661#define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1662 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1663#define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1664 !adv->rpa_expired)
1665
1666#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1667 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1668
1669#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1670 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1671
1672#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1673 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1674
1675#define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1676
1677/* Use LL Privacy based address resolution if supported */
1678#define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1679 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1680
1681#define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1682 (hdev->commands[39] & 0x04))
1683
1684/* Use enhanced synchronous connection if command is supported and its quirk
1685 * has not been set.
1686 */
1687#define enhanced_sync_conn_capable(dev) \
1688 (((dev)->commands[29] & 0x08) && \
1689 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1690
1691/* Use ext scanning if set ext scan param and ext scan enable is supported */
1692#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1693 ((dev)->commands[37] & 0x40) && \
1694 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1695
1696/* Use ext create connection if command is supported */
1697#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1698
1699/* Extended advertising support */
1700#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1701
1702/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1703 *
1704 * C24: Mandatory if the LE Controller supports Connection State and either
1705 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1706 */
1707#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1708 ext_adv_capable(dev))
1709
1710/* Periodic advertising support */
1711#define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1712
1713/* CIS Master/Slave and BIS support */
1714#define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1715#define cis_capable(dev) \
1716 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1717#define cis_central_capable(dev) \
1718 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1719#define cis_peripheral_capable(dev) \
1720 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1721#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1722
1723#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1724 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1725
1726/* ----- HCI protocols ----- */
1727#define HCI_PROTO_DEFER 0x01
1728
1729static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730 __u8 type, __u8 *flags)
1731{
1732 switch (type) {
1733 case ACL_LINK:
1734 return l2cap_connect_ind(hdev, bdaddr);
1735
1736 case SCO_LINK:
1737 case ESCO_LINK:
1738 return sco_connect_ind(hdev, bdaddr, flags);
1739
1740 case ISO_LINK:
1741 return iso_connect_ind(hdev, bdaddr, flags);
1742
1743 default:
1744 BT_ERR("unknown link type %d", type);
1745 return -EINVAL;
1746 }
1747}
1748
1749static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1750{
1751 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1752 return HCI_ERROR_REMOTE_USER_TERM;
1753
1754 return l2cap_disconn_ind(conn);
1755}
1756
1757/* ----- HCI callbacks ----- */
1758struct hci_cb {
1759 struct list_head list;
1760
1761 char *name;
1762
1763 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1764 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1765 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1766 __u8 encrypt);
1767 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1768 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1769};
1770
1771static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1772{
1773 struct hci_cb *cb;
1774
1775 mutex_lock(&hci_cb_list_lock);
1776 list_for_each_entry(cb, &hci_cb_list, list) {
1777 if (cb->connect_cfm)
1778 cb->connect_cfm(conn, status);
1779 }
1780 mutex_unlock(&hci_cb_list_lock);
1781
1782 if (conn->connect_cfm_cb)
1783 conn->connect_cfm_cb(conn, status);
1784}
1785
1786static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1787{
1788 struct hci_cb *cb;
1789
1790 mutex_lock(&hci_cb_list_lock);
1791 list_for_each_entry(cb, &hci_cb_list, list) {
1792 if (cb->disconn_cfm)
1793 cb->disconn_cfm(conn, reason);
1794 }
1795 mutex_unlock(&hci_cb_list_lock);
1796
1797 if (conn->disconn_cfm_cb)
1798 conn->disconn_cfm_cb(conn, reason);
1799}
1800
1801static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1802{
1803 struct hci_cb *cb;
1804 __u8 encrypt;
1805
1806 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1807 return;
1808
1809 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1810
1811 mutex_lock(&hci_cb_list_lock);
1812 list_for_each_entry(cb, &hci_cb_list, list) {
1813 if (cb->security_cfm)
1814 cb->security_cfm(conn, status, encrypt);
1815 }
1816 mutex_unlock(&hci_cb_list_lock);
1817
1818 if (conn->security_cfm_cb)
1819 conn->security_cfm_cb(conn, status);
1820}
1821
1822static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1823{
1824 struct hci_cb *cb;
1825 __u8 encrypt;
1826
1827 if (conn->state == BT_CONFIG) {
1828 if (!status)
1829 conn->state = BT_CONNECTED;
1830
1831 hci_connect_cfm(conn, status);
1832 hci_conn_drop(conn);
1833 return;
1834 }
1835
1836 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1837 encrypt = 0x00;
1838 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1839 encrypt = 0x02;
1840 else
1841 encrypt = 0x01;
1842
1843 if (!status) {
1844 if (conn->sec_level == BT_SECURITY_SDP)
1845 conn->sec_level = BT_SECURITY_LOW;
1846
1847 if (conn->pending_sec_level > conn->sec_level)
1848 conn->sec_level = conn->pending_sec_level;
1849 }
1850
1851 mutex_lock(&hci_cb_list_lock);
1852 list_for_each_entry(cb, &hci_cb_list, list) {
1853 if (cb->security_cfm)
1854 cb->security_cfm(conn, status, encrypt);
1855 }
1856 mutex_unlock(&hci_cb_list_lock);
1857
1858 if (conn->security_cfm_cb)
1859 conn->security_cfm_cb(conn, status);
1860}
1861
1862static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1863{
1864 struct hci_cb *cb;
1865
1866 mutex_lock(&hci_cb_list_lock);
1867 list_for_each_entry(cb, &hci_cb_list, list) {
1868 if (cb->key_change_cfm)
1869 cb->key_change_cfm(conn, status);
1870 }
1871 mutex_unlock(&hci_cb_list_lock);
1872}
1873
1874static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1875 __u8 role)
1876{
1877 struct hci_cb *cb;
1878
1879 mutex_lock(&hci_cb_list_lock);
1880 list_for_each_entry(cb, &hci_cb_list, list) {
1881 if (cb->role_switch_cfm)
1882 cb->role_switch_cfm(conn, status, role);
1883 }
1884 mutex_unlock(&hci_cb_list_lock);
1885}
1886
1887static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1888{
1889 if (addr_type != ADDR_LE_DEV_RANDOM)
1890 return false;
1891
1892 if ((bdaddr->b[5] & 0xc0) == 0x40)
1893 return true;
1894
1895 return false;
1896}
1897
1898static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1899{
1900 if (addr_type == ADDR_LE_DEV_PUBLIC)
1901 return true;
1902
1903 /* Check for Random Static address type */
1904 if ((addr->b[5] & 0xc0) == 0xc0)
1905 return true;
1906
1907 return false;
1908}
1909
1910static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1911 bdaddr_t *bdaddr, u8 addr_type)
1912{
1913 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1914 return NULL;
1915
1916 return hci_find_irk_by_rpa(hdev, bdaddr);
1917}
1918
1919static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1920 u16 to_multiplier)
1921{
1922 u16 max_latency;
1923
1924 if (min > max || min < 6 || max > 3200)
1925 return -EINVAL;
1926
1927 if (to_multiplier < 10 || to_multiplier > 3200)
1928 return -EINVAL;
1929
1930 if (max >= to_multiplier * 8)
1931 return -EINVAL;
1932
1933 max_latency = (to_multiplier * 4 / max) - 1;
1934 if (latency > 499 || latency > max_latency)
1935 return -EINVAL;
1936
1937 return 0;
1938}
1939
1940int hci_register_cb(struct hci_cb *hcb);
1941int hci_unregister_cb(struct hci_cb *hcb);
1942
1943int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1944 const void *param);
1945
1946int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1947 const void *param);
1948void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1949void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1950void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1951
1952void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1953void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
1954
1955u32 hci_conn_get_phy(struct hci_conn *conn);
1956
1957/* ----- HCI Sockets ----- */
1958void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1959void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1960 int flag, struct sock *skip_sk);
1961void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1962void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1963 void *data, u16 data_len, ktime_t tstamp,
1964 int flag, struct sock *skip_sk);
1965
1966void hci_sock_dev_event(struct hci_dev *hdev, int event);
1967
1968#define HCI_MGMT_VAR_LEN BIT(0)
1969#define HCI_MGMT_NO_HDEV BIT(1)
1970#define HCI_MGMT_UNTRUSTED BIT(2)
1971#define HCI_MGMT_UNCONFIGURED BIT(3)
1972#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1973
1974struct hci_mgmt_handler {
1975 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1976 u16 data_len);
1977 size_t data_len;
1978 unsigned long flags;
1979};
1980
1981struct hci_mgmt_chan {
1982 struct list_head list;
1983 unsigned short channel;
1984 size_t handler_count;
1985 const struct hci_mgmt_handler *handlers;
1986 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1987};
1988
1989int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1990void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1991
1992/* Management interface */
1993#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1994#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1995 BIT(BDADDR_LE_RANDOM))
1996#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1997 BIT(BDADDR_LE_PUBLIC) | \
1998 BIT(BDADDR_LE_RANDOM))
1999
2000/* These LE scan and inquiry parameters were chosen according to LE General
2001 * Discovery Procedure specification.
2002 */
2003#define DISCOV_LE_SCAN_WIN 0x12
2004#define DISCOV_LE_SCAN_INT 0x12
2005#define DISCOV_LE_TIMEOUT 10240 /* msec */
2006#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2007#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2008#define DISCOV_BREDR_INQUIRY_LEN 0x08
2009#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2010#define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2011#define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2012#define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2013#define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2014#define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2015#define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2016#define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2017
2018#define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2019
2020void mgmt_fill_version_info(void *ver);
2021int mgmt_new_settings(struct hci_dev *hdev);
2022void mgmt_index_added(struct hci_dev *hdev);
2023void mgmt_index_removed(struct hci_dev *hdev);
2024void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2025void mgmt_power_on(struct hci_dev *hdev, int err);
2026void __mgmt_power_off(struct hci_dev *hdev);
2027void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2028 bool persistent);
2029void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2030 u8 *name, u8 name_len);
2031void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2032 u8 link_type, u8 addr_type, u8 reason,
2033 bool mgmt_connected);
2034void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2035 u8 link_type, u8 addr_type, u8 status);
2036void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2037 u8 addr_type, u8 status);
2038void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2039void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2040 u8 status);
2041void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2042 u8 status);
2043int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2044 u8 link_type, u8 addr_type, u32 value,
2045 u8 confirm_hint);
2046int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2047 u8 link_type, u8 addr_type, u8 status);
2048int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2049 u8 link_type, u8 addr_type, u8 status);
2050int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2051 u8 link_type, u8 addr_type);
2052int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2053 u8 link_type, u8 addr_type, u8 status);
2054int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2055 u8 link_type, u8 addr_type, u8 status);
2056int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2057 u8 link_type, u8 addr_type, u32 passkey,
2058 u8 entered);
2059void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2060void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2061void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2062 u8 status);
2063void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2064void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2065void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2066void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2067 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2068 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2069 u64 instant);
2070void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2071 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2072void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2073void mgmt_suspending(struct hci_dev *hdev, u8 state);
2074void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2075 u8 addr_type);
2076bool mgmt_powering_down(struct hci_dev *hdev);
2077void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2078void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2079void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2080 bool persistent);
2081void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2082 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2083 u16 max_interval, u16 latency, u16 timeout);
2084void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2085bool mgmt_get_connectable(struct hci_dev *hdev);
2086u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2087void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2088 u8 instance);
2089void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2090 u8 instance);
2091void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2092int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2093void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2094 bdaddr_t *bdaddr, u8 addr_type);
2095
2096int hci_abort_conn(struct hci_conn *conn, u8 reason);
2097u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2098 u16 to_multiplier);
2099void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2100 __u8 ltk[16], __u8 key_size);
2101
2102void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2103 u8 *bdaddr_type);
2104
2105#define SCO_AIRMODE_MASK 0x0003
2106#define SCO_AIRMODE_CVSD 0x0000
2107#define SCO_AIRMODE_TRANSP 0x0003
2108
2109#define LOCAL_CODEC_ACL_MASK BIT(0)
2110#define LOCAL_CODEC_SCO_MASK BIT(1)
2111
2112#define TRANSPORT_TYPE_MAX 0x04
2113
2114#endif /* __HCI_CORE_H */