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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/leds.h>
29#include <net/bluetooth/hci.h>
30#include <net/bluetooth/hci_sock.h>
31
32/* HCI priority */
33#define HCI_PRIO_MAX 7
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 list_head all; /* inq_cache.all */
49 struct list_head list; /* unknown or resolve */
50 enum {
51 NAME_NOT_KNOWN,
52 NAME_NEEDED,
53 NAME_PENDING,
54 NAME_KNOWN,
55 } name_state;
56 __u32 timestamp;
57 struct inquiry_data data;
58};
59
60struct discovery_state {
61 int type;
62 enum {
63 DISCOVERY_STOPPED,
64 DISCOVERY_STARTING,
65 DISCOVERY_FINDING,
66 DISCOVERY_RESOLVING,
67 DISCOVERY_STOPPING,
68 } state;
69 struct list_head all; /* All devices found during inquiry */
70 struct list_head unknown; /* Name state not known */
71 struct list_head resolve; /* Name needs to be resolved */
72 __u32 timestamp;
73 bdaddr_t last_adv_addr;
74 u8 last_adv_addr_type;
75 s8 last_adv_rssi;
76 u32 last_adv_flags;
77 u8 last_adv_data[HCI_MAX_AD_LENGTH];
78 u8 last_adv_data_len;
79 bool report_invalid_rssi;
80 bool result_filtering;
81 bool limited;
82 s8 rssi;
83 u16 uuid_count;
84 u8 (*uuids)[16];
85 unsigned long scan_start;
86 unsigned long scan_duration;
87};
88
89struct hci_conn_hash {
90 struct list_head list;
91 unsigned int acl_num;
92 unsigned int amp_num;
93 unsigned int sco_num;
94 unsigned int le_num;
95 unsigned int le_num_slave;
96};
97
98struct bdaddr_list {
99 struct list_head list;
100 bdaddr_t bdaddr;
101 u8 bdaddr_type;
102};
103
104struct bt_uuid {
105 struct list_head list;
106 u8 uuid[16];
107 u8 size;
108 u8 svc_hint;
109};
110
111struct smp_csrk {
112 bdaddr_t bdaddr;
113 u8 bdaddr_type;
114 u8 type;
115 u8 val[16];
116};
117
118struct smp_ltk {
119 struct list_head list;
120 struct rcu_head rcu;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123 u8 authenticated;
124 u8 type;
125 u8 enc_size;
126 __le16 ediv;
127 __le64 rand;
128 u8 val[16];
129};
130
131struct smp_irk {
132 struct list_head list;
133 struct rcu_head rcu;
134 bdaddr_t rpa;
135 bdaddr_t bdaddr;
136 u8 addr_type;
137 u8 val[16];
138};
139
140struct link_key {
141 struct list_head list;
142 struct rcu_head rcu;
143 bdaddr_t bdaddr;
144 u8 type;
145 u8 val[HCI_LINK_KEY_SIZE];
146 u8 pin_len;
147};
148
149struct oob_data {
150 struct list_head list;
151 bdaddr_t bdaddr;
152 u8 bdaddr_type;
153 u8 present;
154 u8 hash192[16];
155 u8 rand192[16];
156 u8 hash256[16];
157 u8 rand256[16];
158};
159
160struct adv_info {
161 struct list_head list;
162 bool pending;
163 __u8 instance;
164 __u32 flags;
165 __u16 timeout;
166 __u16 remaining_time;
167 __u16 duration;
168 __u16 adv_data_len;
169 __u8 adv_data[HCI_MAX_AD_LENGTH];
170 __u16 scan_rsp_len;
171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
172};
173
174#define HCI_MAX_ADV_INSTANCES 5
175#define HCI_DEFAULT_ADV_DURATION 2
176
177#define HCI_MAX_SHORT_NAME_LENGTH 10
178
179/* Default LE RPA expiry time, 15 minutes */
180#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
181
182/* Default min/max age of connection information (1s/3s) */
183#define DEFAULT_CONN_INFO_MIN_AGE 1000
184#define DEFAULT_CONN_INFO_MAX_AGE 3000
185
186struct amp_assoc {
187 __u16 len;
188 __u16 offset;
189 __u16 rem_len;
190 __u16 len_so_far;
191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
192};
193
194#define HCI_MAX_PAGES 3
195
196struct hci_dev {
197 struct list_head list;
198 struct mutex lock;
199
200 char name[8];
201 unsigned long flags;
202 __u16 id;
203 __u8 bus;
204 __u8 dev_type;
205 bdaddr_t bdaddr;
206 bdaddr_t setup_addr;
207 bdaddr_t public_addr;
208 bdaddr_t random_addr;
209 bdaddr_t static_addr;
210 __u8 adv_addr_type;
211 __u8 dev_name[HCI_MAX_NAME_LENGTH];
212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
213 __u8 eir[HCI_MAX_EIR_LENGTH];
214 __u16 appearance;
215 __u8 dev_class[3];
216 __u8 major_class;
217 __u8 minor_class;
218 __u8 max_page;
219 __u8 features[HCI_MAX_PAGES][8];
220 __u8 le_features[8];
221 __u8 le_white_list_size;
222 __u8 le_states[8];
223 __u8 commands[64];
224 __u8 hci_ver;
225 __u16 hci_rev;
226 __u8 lmp_ver;
227 __u16 manufacturer;
228 __u16 lmp_subver;
229 __u16 voice_setting;
230 __u8 num_iac;
231 __u8 stored_max_keys;
232 __u8 stored_num_keys;
233 __u8 io_capability;
234 __s8 inq_tx_power;
235 __u16 page_scan_interval;
236 __u16 page_scan_window;
237 __u8 page_scan_type;
238 __u8 le_adv_channel_map;
239 __u16 le_adv_min_interval;
240 __u16 le_adv_max_interval;
241 __u8 le_scan_type;
242 __u16 le_scan_interval;
243 __u16 le_scan_window;
244 __u16 le_conn_min_interval;
245 __u16 le_conn_max_interval;
246 __u16 le_conn_latency;
247 __u16 le_supv_timeout;
248 __u16 le_def_tx_len;
249 __u16 le_def_tx_time;
250 __u16 le_max_tx_len;
251 __u16 le_max_tx_time;
252 __u16 le_max_rx_len;
253 __u16 le_max_rx_time;
254 __u16 discov_interleaved_timeout;
255 __u16 conn_info_min_age;
256 __u16 conn_info_max_age;
257 __u8 ssp_debug_mode;
258 __u8 hw_error_code;
259 __u32 clock;
260
261 __u16 devid_source;
262 __u16 devid_vendor;
263 __u16 devid_product;
264 __u16 devid_version;
265
266 __u16 pkt_type;
267 __u16 esco_type;
268 __u16 link_policy;
269 __u16 link_mode;
270
271 __u32 idle_timeout;
272 __u16 sniff_min_interval;
273 __u16 sniff_max_interval;
274
275 __u8 amp_status;
276 __u32 amp_total_bw;
277 __u32 amp_max_bw;
278 __u32 amp_min_latency;
279 __u32 amp_max_pdu;
280 __u8 amp_type;
281 __u16 amp_pal_cap;
282 __u16 amp_assoc_size;
283 __u32 amp_max_flush_to;
284 __u32 amp_be_flush_to;
285
286 struct amp_assoc loc_assoc;
287
288 __u8 flow_ctl_mode;
289
290 unsigned int auto_accept_delay;
291
292 unsigned long quirks;
293
294 atomic_t cmd_cnt;
295 unsigned int acl_cnt;
296 unsigned int sco_cnt;
297 unsigned int le_cnt;
298
299 unsigned int acl_mtu;
300 unsigned int sco_mtu;
301 unsigned int le_mtu;
302 unsigned int acl_pkts;
303 unsigned int sco_pkts;
304 unsigned int le_pkts;
305
306 __u16 block_len;
307 __u16 block_mtu;
308 __u16 num_blocks;
309 __u16 block_cnt;
310
311 unsigned long acl_last_tx;
312 unsigned long sco_last_tx;
313 unsigned long le_last_tx;
314
315 struct workqueue_struct *workqueue;
316 struct workqueue_struct *req_workqueue;
317
318 struct work_struct power_on;
319 struct delayed_work power_off;
320 struct work_struct error_reset;
321
322 __u16 discov_timeout;
323 struct delayed_work discov_off;
324
325 struct delayed_work service_cache;
326
327 struct delayed_work cmd_timer;
328
329 struct work_struct rx_work;
330 struct work_struct cmd_work;
331 struct work_struct tx_work;
332
333 struct work_struct discov_update;
334 struct work_struct bg_scan_update;
335 struct work_struct scan_update;
336 struct work_struct connectable_update;
337 struct work_struct discoverable_update;
338 struct delayed_work le_scan_disable;
339 struct delayed_work le_scan_restart;
340
341 struct sk_buff_head rx_q;
342 struct sk_buff_head raw_q;
343 struct sk_buff_head cmd_q;
344
345 struct sk_buff *sent_cmd;
346
347 struct mutex req_lock;
348 wait_queue_head_t req_wait_q;
349 __u32 req_status;
350 __u32 req_result;
351 struct sk_buff *req_skb;
352
353 void *smp_data;
354 void *smp_bredr_data;
355
356 struct discovery_state discovery;
357 struct hci_conn_hash conn_hash;
358
359 struct list_head mgmt_pending;
360 struct list_head blacklist;
361 struct list_head whitelist;
362 struct list_head uuids;
363 struct list_head link_keys;
364 struct list_head long_term_keys;
365 struct list_head identity_resolving_keys;
366 struct list_head remote_oob_data;
367 struct list_head le_white_list;
368 struct list_head le_conn_params;
369 struct list_head pend_le_conns;
370 struct list_head pend_le_reports;
371
372 struct hci_dev_stats stat;
373
374 atomic_t promisc;
375
376 const char *hw_info;
377 const char *fw_info;
378 struct dentry *debugfs;
379
380 struct device dev;
381
382 struct rfkill *rfkill;
383
384 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
385
386 __s8 adv_tx_power;
387 __u8 adv_data[HCI_MAX_AD_LENGTH];
388 __u8 adv_data_len;
389 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
390 __u8 scan_rsp_data_len;
391
392 struct list_head adv_instances;
393 unsigned int adv_instance_cnt;
394 __u8 cur_adv_instance;
395 __u16 adv_instance_timeout;
396 struct delayed_work adv_instance_expire;
397
398 __u8 irk[16];
399 __u32 rpa_timeout;
400 struct delayed_work rpa_expired;
401 bdaddr_t rpa;
402
403#if IS_ENABLED(CONFIG_BT_LEDS)
404 struct led_trigger *power_led;
405#endif
406
407 int (*open)(struct hci_dev *hdev);
408 int (*close)(struct hci_dev *hdev);
409 int (*flush)(struct hci_dev *hdev);
410 int (*setup)(struct hci_dev *hdev);
411 int (*shutdown)(struct hci_dev *hdev);
412 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
413 void (*notify)(struct hci_dev *hdev, unsigned int evt);
414 void (*hw_error)(struct hci_dev *hdev, u8 code);
415 int (*post_init)(struct hci_dev *hdev);
416 int (*set_diag)(struct hci_dev *hdev, bool enable);
417 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
418};
419
420#define HCI_PHY_HANDLE(handle) (handle & 0xff)
421
422struct hci_conn {
423 struct list_head list;
424
425 atomic_t refcnt;
426
427 bdaddr_t dst;
428 __u8 dst_type;
429 bdaddr_t src;
430 __u8 src_type;
431 bdaddr_t init_addr;
432 __u8 init_addr_type;
433 bdaddr_t resp_addr;
434 __u8 resp_addr_type;
435 __u16 handle;
436 __u16 state;
437 __u8 mode;
438 __u8 type;
439 __u8 role;
440 bool out;
441 __u8 attempt;
442 __u8 dev_class[3];
443 __u8 features[HCI_MAX_PAGES][8];
444 __u16 pkt_type;
445 __u16 link_policy;
446 __u8 key_type;
447 __u8 auth_type;
448 __u8 sec_level;
449 __u8 pending_sec_level;
450 __u8 pin_length;
451 __u8 enc_key_size;
452 __u8 io_capability;
453 __u32 passkey_notify;
454 __u8 passkey_entered;
455 __u16 disc_timeout;
456 __u16 conn_timeout;
457 __u16 setting;
458 __u16 le_conn_min_interval;
459 __u16 le_conn_max_interval;
460 __u16 le_conn_interval;
461 __u16 le_conn_latency;
462 __u16 le_supv_timeout;
463 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
464 __u8 le_adv_data_len;
465 __s8 rssi;
466 __s8 tx_power;
467 __s8 max_tx_power;
468 unsigned long flags;
469
470 __u32 clock;
471 __u16 clock_accuracy;
472
473 unsigned long conn_info_timestamp;
474
475 __u8 remote_cap;
476 __u8 remote_auth;
477 __u8 remote_id;
478
479 unsigned int sent;
480
481 struct sk_buff_head data_q;
482 struct list_head chan_list;
483
484 struct delayed_work disc_work;
485 struct delayed_work auto_accept_work;
486 struct delayed_work idle_work;
487 struct delayed_work le_conn_timeout;
488 struct work_struct le_scan_cleanup;
489
490 struct device dev;
491 struct dentry *debugfs;
492
493 struct hci_dev *hdev;
494 void *l2cap_data;
495 void *sco_data;
496 struct amp_mgr *amp_mgr;
497
498 struct hci_conn *link;
499
500 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
501 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
502 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
503};
504
505struct hci_chan {
506 struct list_head list;
507 __u16 handle;
508 struct hci_conn *conn;
509 struct sk_buff_head data_q;
510 unsigned int sent;
511 __u8 state;
512};
513
514struct hci_conn_params {
515 struct list_head list;
516 struct list_head action;
517
518 bdaddr_t addr;
519 u8 addr_type;
520
521 u16 conn_min_interval;
522 u16 conn_max_interval;
523 u16 conn_latency;
524 u16 supervision_timeout;
525
526 enum {
527 HCI_AUTO_CONN_DISABLED,
528 HCI_AUTO_CONN_REPORT,
529 HCI_AUTO_CONN_DIRECT,
530 HCI_AUTO_CONN_ALWAYS,
531 HCI_AUTO_CONN_LINK_LOSS,
532 HCI_AUTO_CONN_EXPLICIT,
533 } auto_connect;
534
535 struct hci_conn *conn;
536 bool explicit_connect;
537};
538
539extern struct list_head hci_dev_list;
540extern struct list_head hci_cb_list;
541extern rwlock_t hci_dev_list_lock;
542extern struct mutex hci_cb_list_lock;
543
544#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
545#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
546#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
547#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
548#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
549#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
550#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
551
552#define hci_dev_clear_volatile_flags(hdev) \
553 do { \
554 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
555 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
556 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
557 } while (0)
558
559/* ----- HCI interface to upper protocols ----- */
560int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
561int l2cap_disconn_ind(struct hci_conn *hcon);
562void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
563
564#if IS_ENABLED(CONFIG_BT_BREDR)
565int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
566void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
567#else
568static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
569 __u8 *flags)
570{
571 return 0;
572}
573
574static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
575{
576}
577#endif
578
579/* ----- Inquiry cache ----- */
580#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
581#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
582
583static inline void discovery_init(struct hci_dev *hdev)
584{
585 hdev->discovery.state = DISCOVERY_STOPPED;
586 INIT_LIST_HEAD(&hdev->discovery.all);
587 INIT_LIST_HEAD(&hdev->discovery.unknown);
588 INIT_LIST_HEAD(&hdev->discovery.resolve);
589 hdev->discovery.report_invalid_rssi = true;
590 hdev->discovery.rssi = HCI_RSSI_INVALID;
591}
592
593static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
594{
595 hdev->discovery.result_filtering = false;
596 hdev->discovery.report_invalid_rssi = true;
597 hdev->discovery.rssi = HCI_RSSI_INVALID;
598 hdev->discovery.uuid_count = 0;
599 kfree(hdev->discovery.uuids);
600 hdev->discovery.uuids = NULL;
601 hdev->discovery.scan_start = 0;
602 hdev->discovery.scan_duration = 0;
603}
604
605bool hci_discovery_active(struct hci_dev *hdev);
606
607void hci_discovery_set_state(struct hci_dev *hdev, int state);
608
609static inline int inquiry_cache_empty(struct hci_dev *hdev)
610{
611 return list_empty(&hdev->discovery.all);
612}
613
614static inline long inquiry_cache_age(struct hci_dev *hdev)
615{
616 struct discovery_state *c = &hdev->discovery;
617 return jiffies - c->timestamp;
618}
619
620static inline long inquiry_entry_age(struct inquiry_entry *e)
621{
622 return jiffies - e->timestamp;
623}
624
625struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
626 bdaddr_t *bdaddr);
627struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
628 bdaddr_t *bdaddr);
629struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
630 bdaddr_t *bdaddr,
631 int state);
632void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
633 struct inquiry_entry *ie);
634u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
635 bool name_known);
636void hci_inquiry_cache_flush(struct hci_dev *hdev);
637
638/* ----- HCI Connections ----- */
639enum {
640 HCI_CONN_AUTH_PEND,
641 HCI_CONN_REAUTH_PEND,
642 HCI_CONN_ENCRYPT_PEND,
643 HCI_CONN_RSWITCH_PEND,
644 HCI_CONN_MODE_CHANGE_PEND,
645 HCI_CONN_SCO_SETUP_PEND,
646 HCI_CONN_MGMT_CONNECTED,
647 HCI_CONN_SSP_ENABLED,
648 HCI_CONN_SC_ENABLED,
649 HCI_CONN_AES_CCM,
650 HCI_CONN_POWER_SAVE,
651 HCI_CONN_FLUSH_KEY,
652 HCI_CONN_ENCRYPT,
653 HCI_CONN_AUTH,
654 HCI_CONN_SECURE,
655 HCI_CONN_FIPS,
656 HCI_CONN_STK_ENCRYPT,
657 HCI_CONN_AUTH_INITIATOR,
658 HCI_CONN_DROP,
659 HCI_CONN_PARAM_REMOVAL_PEND,
660 HCI_CONN_NEW_LINK_KEY,
661 HCI_CONN_SCANNING,
662 HCI_CONN_AUTH_FAILURE,
663};
664
665static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
666{
667 struct hci_dev *hdev = conn->hdev;
668 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
669 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
670}
671
672static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
673{
674 struct hci_dev *hdev = conn->hdev;
675 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
676 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
677}
678
679static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
680{
681 struct hci_conn_hash *h = &hdev->conn_hash;
682 list_add_rcu(&c->list, &h->list);
683 switch (c->type) {
684 case ACL_LINK:
685 h->acl_num++;
686 break;
687 case AMP_LINK:
688 h->amp_num++;
689 break;
690 case LE_LINK:
691 h->le_num++;
692 if (c->role == HCI_ROLE_SLAVE)
693 h->le_num_slave++;
694 break;
695 case SCO_LINK:
696 case ESCO_LINK:
697 h->sco_num++;
698 break;
699 }
700}
701
702static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
703{
704 struct hci_conn_hash *h = &hdev->conn_hash;
705
706 list_del_rcu(&c->list);
707 synchronize_rcu();
708
709 switch (c->type) {
710 case ACL_LINK:
711 h->acl_num--;
712 break;
713 case AMP_LINK:
714 h->amp_num--;
715 break;
716 case LE_LINK:
717 h->le_num--;
718 if (c->role == HCI_ROLE_SLAVE)
719 h->le_num_slave--;
720 break;
721 case SCO_LINK:
722 case ESCO_LINK:
723 h->sco_num--;
724 break;
725 }
726}
727
728static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
729{
730 struct hci_conn_hash *h = &hdev->conn_hash;
731 switch (type) {
732 case ACL_LINK:
733 return h->acl_num;
734 case AMP_LINK:
735 return h->amp_num;
736 case LE_LINK:
737 return h->le_num;
738 case SCO_LINK:
739 case ESCO_LINK:
740 return h->sco_num;
741 default:
742 return 0;
743 }
744}
745
746static inline unsigned int hci_conn_count(struct hci_dev *hdev)
747{
748 struct hci_conn_hash *c = &hdev->conn_hash;
749
750 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
751}
752
753static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
754{
755 struct hci_conn_hash *h = &hdev->conn_hash;
756 struct hci_conn *c;
757 __u8 type = INVALID_LINK;
758
759 rcu_read_lock();
760
761 list_for_each_entry_rcu(c, &h->list, list) {
762 if (c->handle == handle) {
763 type = c->type;
764 break;
765 }
766 }
767
768 rcu_read_unlock();
769
770 return type;
771}
772
773static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
774 __u16 handle)
775{
776 struct hci_conn_hash *h = &hdev->conn_hash;
777 struct hci_conn *c;
778
779 rcu_read_lock();
780
781 list_for_each_entry_rcu(c, &h->list, list) {
782 if (c->handle == handle) {
783 rcu_read_unlock();
784 return c;
785 }
786 }
787 rcu_read_unlock();
788
789 return NULL;
790}
791
792static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
793 __u8 type, bdaddr_t *ba)
794{
795 struct hci_conn_hash *h = &hdev->conn_hash;
796 struct hci_conn *c;
797
798 rcu_read_lock();
799
800 list_for_each_entry_rcu(c, &h->list, list) {
801 if (c->type == type && !bacmp(&c->dst, ba)) {
802 rcu_read_unlock();
803 return c;
804 }
805 }
806
807 rcu_read_unlock();
808
809 return NULL;
810}
811
812static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
813 bdaddr_t *ba,
814 __u8 ba_type)
815{
816 struct hci_conn_hash *h = &hdev->conn_hash;
817 struct hci_conn *c;
818
819 rcu_read_lock();
820
821 list_for_each_entry_rcu(c, &h->list, list) {
822 if (c->type != LE_LINK)
823 continue;
824
825 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
826 rcu_read_unlock();
827 return c;
828 }
829 }
830
831 rcu_read_unlock();
832
833 return NULL;
834}
835
836static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
837 __u8 type, __u16 state)
838{
839 struct hci_conn_hash *h = &hdev->conn_hash;
840 struct hci_conn *c;
841
842 rcu_read_lock();
843
844 list_for_each_entry_rcu(c, &h->list, list) {
845 if (c->type == type && c->state == state) {
846 rcu_read_unlock();
847 return c;
848 }
849 }
850
851 rcu_read_unlock();
852
853 return NULL;
854}
855
856static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
857{
858 struct hci_conn_hash *h = &hdev->conn_hash;
859 struct hci_conn *c;
860
861 rcu_read_lock();
862
863 list_for_each_entry_rcu(c, &h->list, list) {
864 if (c->type == LE_LINK && c->state == BT_CONNECT &&
865 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
866 rcu_read_unlock();
867 return c;
868 }
869 }
870
871 rcu_read_unlock();
872
873 return NULL;
874}
875
876int hci_disconnect(struct hci_conn *conn, __u8 reason);
877bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
878void hci_sco_setup(struct hci_conn *conn, __u8 status);
879
880struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
881 u8 role);
882int hci_conn_del(struct hci_conn *conn);
883void hci_conn_hash_flush(struct hci_dev *hdev);
884void hci_conn_check_pending(struct hci_dev *hdev);
885
886struct hci_chan *hci_chan_create(struct hci_conn *conn);
887void hci_chan_del(struct hci_chan *chan);
888void hci_chan_list_flush(struct hci_conn *conn);
889struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
890
891struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
892 u8 dst_type, u8 sec_level,
893 u16 conn_timeout);
894struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
895 u8 dst_type, u8 sec_level, u16 conn_timeout,
896 u8 role);
897struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
898 u8 sec_level, u8 auth_type);
899struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
900 __u16 setting);
901int hci_conn_check_link_mode(struct hci_conn *conn);
902int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
903int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
904 bool initiator);
905int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
906
907void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
908
909void hci_le_conn_failed(struct hci_conn *conn, u8 status);
910
911/*
912 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
913 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
914 * working or anything else. They just guarantee that the object is available
915 * and can be dereferenced. So you can use its locks, local variables and any
916 * other constant data.
917 * Before accessing runtime data, you _must_ lock the object and then check that
918 * it is still running. As soon as you release the locks, the connection might
919 * get dropped, though.
920 *
921 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
922 * how long the underlying connection is held. So every channel that runs on the
923 * hci_conn object calls this to prevent the connection from disappearing. As
924 * long as you hold a device, you must also guarantee that you have a valid
925 * reference to the device via hci_conn_get() (or the initial reference from
926 * hci_conn_add()).
927 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
928 * break because nobody cares for that. But this means, we cannot use
929 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
930 */
931
932static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
933{
934 get_device(&conn->dev);
935 return conn;
936}
937
938static inline void hci_conn_put(struct hci_conn *conn)
939{
940 put_device(&conn->dev);
941}
942
943static inline void hci_conn_hold(struct hci_conn *conn)
944{
945 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
946
947 atomic_inc(&conn->refcnt);
948 cancel_delayed_work(&conn->disc_work);
949}
950
951static inline void hci_conn_drop(struct hci_conn *conn)
952{
953 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
954
955 if (atomic_dec_and_test(&conn->refcnt)) {
956 unsigned long timeo;
957
958 switch (conn->type) {
959 case ACL_LINK:
960 case LE_LINK:
961 cancel_delayed_work(&conn->idle_work);
962 if (conn->state == BT_CONNECTED) {
963 timeo = conn->disc_timeout;
964 if (!conn->out)
965 timeo *= 2;
966 } else {
967 timeo = 0;
968 }
969 break;
970
971 case AMP_LINK:
972 timeo = conn->disc_timeout;
973 break;
974
975 default:
976 timeo = 0;
977 break;
978 }
979
980 cancel_delayed_work(&conn->disc_work);
981 queue_delayed_work(conn->hdev->workqueue,
982 &conn->disc_work, timeo);
983 }
984}
985
986/* ----- HCI Devices ----- */
987static inline void hci_dev_put(struct hci_dev *d)
988{
989 BT_DBG("%s orig refcnt %d", d->name,
990 atomic_read(&d->dev.kobj.kref.refcount));
991
992 put_device(&d->dev);
993}
994
995static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
996{
997 BT_DBG("%s orig refcnt %d", d->name,
998 atomic_read(&d->dev.kobj.kref.refcount));
999
1000 get_device(&d->dev);
1001 return d;
1002}
1003
1004#define hci_dev_lock(d) mutex_lock(&d->lock)
1005#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1006
1007#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1008#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1009
1010static inline void *hci_get_drvdata(struct hci_dev *hdev)
1011{
1012 return dev_get_drvdata(&hdev->dev);
1013}
1014
1015static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1016{
1017 dev_set_drvdata(&hdev->dev, data);
1018}
1019
1020struct hci_dev *hci_dev_get(int index);
1021struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1022
1023struct hci_dev *hci_alloc_dev(void);
1024void hci_free_dev(struct hci_dev *hdev);
1025int hci_register_dev(struct hci_dev *hdev);
1026void hci_unregister_dev(struct hci_dev *hdev);
1027int hci_suspend_dev(struct hci_dev *hdev);
1028int hci_resume_dev(struct hci_dev *hdev);
1029int hci_reset_dev(struct hci_dev *hdev);
1030int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1031int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1032__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1033__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1034int hci_dev_open(__u16 dev);
1035int hci_dev_close(__u16 dev);
1036int hci_dev_do_close(struct hci_dev *hdev);
1037int hci_dev_reset(__u16 dev);
1038int hci_dev_reset_stat(__u16 dev);
1039int hci_dev_cmd(unsigned int cmd, void __user *arg);
1040int hci_get_dev_list(void __user *arg);
1041int hci_get_dev_info(void __user *arg);
1042int hci_get_conn_list(void __user *arg);
1043int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1044int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1045int hci_inquiry(void __user *arg);
1046
1047struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1048 bdaddr_t *bdaddr, u8 type);
1049int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1050int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1051void hci_bdaddr_list_clear(struct list_head *list);
1052
1053struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1054 bdaddr_t *addr, u8 addr_type);
1055struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1058void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1059
1060struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1061 bdaddr_t *addr,
1062 u8 addr_type);
1063
1064void hci_uuids_clear(struct hci_dev *hdev);
1065
1066void hci_link_keys_clear(struct hci_dev *hdev);
1067struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1068struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1069 bdaddr_t *bdaddr, u8 *val, u8 type,
1070 u8 pin_len, bool *persistent);
1071struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1072 u8 addr_type, u8 type, u8 authenticated,
1073 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1074struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1075 u8 addr_type, u8 role);
1076int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1077void hci_smp_ltks_clear(struct hci_dev *hdev);
1078int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1079
1080struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1081struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1082 u8 addr_type);
1083struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1085void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1086void hci_smp_irks_clear(struct hci_dev *hdev);
1087
1088bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1089
1090void hci_remote_oob_data_clear(struct hci_dev *hdev);
1091struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1092 bdaddr_t *bdaddr, u8 bdaddr_type);
1093int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1095 u8 *hash256, u8 *rand256);
1096int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 u8 bdaddr_type);
1098
1099void hci_adv_instances_clear(struct hci_dev *hdev);
1100struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1101struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1102int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1103 u16 adv_data_len, u8 *adv_data,
1104 u16 scan_rsp_len, u8 *scan_rsp_data,
1105 u16 timeout, u16 duration);
1106int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1107
1108void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1109
1110void hci_init_sysfs(struct hci_dev *hdev);
1111void hci_conn_init_sysfs(struct hci_conn *conn);
1112void hci_conn_add_sysfs(struct hci_conn *conn);
1113void hci_conn_del_sysfs(struct hci_conn *conn);
1114
1115#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1116
1117/* ----- LMP capabilities ----- */
1118#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1119#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1120#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1121#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1122#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1123#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1124#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1125#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1126#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1127#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1128#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1129#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1130#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1131#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1132#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1133#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1134#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1135#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1136#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1137
1138/* ----- Extended LMP capabilities ----- */
1139#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1140#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1141#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1142#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1143#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1144#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1145
1146/* ----- Host capabilities ----- */
1147#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1148#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1149#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1150#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1151
1152#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1153 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1154#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1155 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1156
1157/* ----- HCI protocols ----- */
1158#define HCI_PROTO_DEFER 0x01
1159
1160static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1161 __u8 type, __u8 *flags)
1162{
1163 switch (type) {
1164 case ACL_LINK:
1165 return l2cap_connect_ind(hdev, bdaddr);
1166
1167 case SCO_LINK:
1168 case ESCO_LINK:
1169 return sco_connect_ind(hdev, bdaddr, flags);
1170
1171 default:
1172 BT_ERR("unknown link type %d", type);
1173 return -EINVAL;
1174 }
1175}
1176
1177static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1178{
1179 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1180 return HCI_ERROR_REMOTE_USER_TERM;
1181
1182 return l2cap_disconn_ind(conn);
1183}
1184
1185/* ----- HCI callbacks ----- */
1186struct hci_cb {
1187 struct list_head list;
1188
1189 char *name;
1190
1191 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1192 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1193 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1194 __u8 encrypt);
1195 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1196 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1197};
1198
1199static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1200{
1201 struct hci_cb *cb;
1202
1203 mutex_lock(&hci_cb_list_lock);
1204 list_for_each_entry(cb, &hci_cb_list, list) {
1205 if (cb->connect_cfm)
1206 cb->connect_cfm(conn, status);
1207 }
1208 mutex_unlock(&hci_cb_list_lock);
1209
1210 if (conn->connect_cfm_cb)
1211 conn->connect_cfm_cb(conn, status);
1212}
1213
1214static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1215{
1216 struct hci_cb *cb;
1217
1218 mutex_lock(&hci_cb_list_lock);
1219 list_for_each_entry(cb, &hci_cb_list, list) {
1220 if (cb->disconn_cfm)
1221 cb->disconn_cfm(conn, reason);
1222 }
1223 mutex_unlock(&hci_cb_list_lock);
1224
1225 if (conn->disconn_cfm_cb)
1226 conn->disconn_cfm_cb(conn, reason);
1227}
1228
1229static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1230{
1231 struct hci_cb *cb;
1232 __u8 encrypt;
1233
1234 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1235 return;
1236
1237 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1238
1239 mutex_lock(&hci_cb_list_lock);
1240 list_for_each_entry(cb, &hci_cb_list, list) {
1241 if (cb->security_cfm)
1242 cb->security_cfm(conn, status, encrypt);
1243 }
1244 mutex_unlock(&hci_cb_list_lock);
1245
1246 if (conn->security_cfm_cb)
1247 conn->security_cfm_cb(conn, status);
1248}
1249
1250static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1251 __u8 encrypt)
1252{
1253 struct hci_cb *cb;
1254
1255 if (conn->sec_level == BT_SECURITY_SDP)
1256 conn->sec_level = BT_SECURITY_LOW;
1257
1258 if (conn->pending_sec_level > conn->sec_level)
1259 conn->sec_level = conn->pending_sec_level;
1260
1261 mutex_lock(&hci_cb_list_lock);
1262 list_for_each_entry(cb, &hci_cb_list, list) {
1263 if (cb->security_cfm)
1264 cb->security_cfm(conn, status, encrypt);
1265 }
1266 mutex_unlock(&hci_cb_list_lock);
1267
1268 if (conn->security_cfm_cb)
1269 conn->security_cfm_cb(conn, status);
1270}
1271
1272static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1273{
1274 struct hci_cb *cb;
1275
1276 mutex_lock(&hci_cb_list_lock);
1277 list_for_each_entry(cb, &hci_cb_list, list) {
1278 if (cb->key_change_cfm)
1279 cb->key_change_cfm(conn, status);
1280 }
1281 mutex_unlock(&hci_cb_list_lock);
1282}
1283
1284static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1285 __u8 role)
1286{
1287 struct hci_cb *cb;
1288
1289 mutex_lock(&hci_cb_list_lock);
1290 list_for_each_entry(cb, &hci_cb_list, list) {
1291 if (cb->role_switch_cfm)
1292 cb->role_switch_cfm(conn, status, role);
1293 }
1294 mutex_unlock(&hci_cb_list_lock);
1295}
1296
1297static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1298 size_t *data_len)
1299{
1300 size_t parsed = 0;
1301
1302 if (eir_len < 2)
1303 return NULL;
1304
1305 while (parsed < eir_len - 1) {
1306 u8 field_len = eir[0];
1307
1308 if (field_len == 0)
1309 break;
1310
1311 parsed += field_len + 1;
1312
1313 if (parsed > eir_len)
1314 break;
1315
1316 if (eir[1] != type) {
1317 eir += field_len + 1;
1318 continue;
1319 }
1320
1321 /* Zero length data */
1322 if (field_len == 1)
1323 return NULL;
1324
1325 if (data_len)
1326 *data_len = field_len - 1;
1327
1328 return &eir[2];
1329 }
1330
1331 return NULL;
1332}
1333
1334static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1335{
1336 if (addr_type != ADDR_LE_DEV_RANDOM)
1337 return false;
1338
1339 if ((bdaddr->b[5] & 0xc0) == 0x40)
1340 return true;
1341
1342 return false;
1343}
1344
1345static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1346{
1347 if (addr_type == ADDR_LE_DEV_PUBLIC)
1348 return true;
1349
1350 /* Check for Random Static address type */
1351 if ((addr->b[5] & 0xc0) == 0xc0)
1352 return true;
1353
1354 return false;
1355}
1356
1357static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1358 bdaddr_t *bdaddr, u8 addr_type)
1359{
1360 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1361 return NULL;
1362
1363 return hci_find_irk_by_rpa(hdev, bdaddr);
1364}
1365
1366static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1367 u16 to_multiplier)
1368{
1369 u16 max_latency;
1370
1371 if (min > max || min < 6 || max > 3200)
1372 return -EINVAL;
1373
1374 if (to_multiplier < 10 || to_multiplier > 3200)
1375 return -EINVAL;
1376
1377 if (max >= to_multiplier * 8)
1378 return -EINVAL;
1379
1380 max_latency = (to_multiplier * 4 / max) - 1;
1381 if (latency > 499 || latency > max_latency)
1382 return -EINVAL;
1383
1384 return 0;
1385}
1386
1387int hci_register_cb(struct hci_cb *hcb);
1388int hci_unregister_cb(struct hci_cb *hcb);
1389
1390struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1391 const void *param, u32 timeout);
1392struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u8 event, u32 timeout);
1394
1395int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1396 const void *param);
1397void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1398void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1399
1400void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1401
1402struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1403 const void *param, u32 timeout);
1404
1405/* ----- HCI Sockets ----- */
1406void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1407void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1408 int flag, struct sock *skip_sk);
1409void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1410void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1411 void *data, u16 data_len, ktime_t tstamp,
1412 int flag, struct sock *skip_sk);
1413
1414void hci_sock_dev_event(struct hci_dev *hdev, int event);
1415
1416#define HCI_MGMT_VAR_LEN BIT(0)
1417#define HCI_MGMT_NO_HDEV BIT(1)
1418#define HCI_MGMT_UNTRUSTED BIT(2)
1419#define HCI_MGMT_UNCONFIGURED BIT(3)
1420
1421struct hci_mgmt_handler {
1422 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1423 u16 data_len);
1424 size_t data_len;
1425 unsigned long flags;
1426};
1427
1428struct hci_mgmt_chan {
1429 struct list_head list;
1430 unsigned short channel;
1431 size_t handler_count;
1432 const struct hci_mgmt_handler *handlers;
1433 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1434};
1435
1436int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1437void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1438
1439/* Management interface */
1440#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1441#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1442 BIT(BDADDR_LE_RANDOM))
1443#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1444 BIT(BDADDR_LE_PUBLIC) | \
1445 BIT(BDADDR_LE_RANDOM))
1446
1447/* These LE scan and inquiry parameters were chosen according to LE General
1448 * Discovery Procedure specification.
1449 */
1450#define DISCOV_LE_SCAN_WIN 0x12
1451#define DISCOV_LE_SCAN_INT 0x12
1452#define DISCOV_LE_TIMEOUT 10240 /* msec */
1453#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1454#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1455#define DISCOV_BREDR_INQUIRY_LEN 0x08
1456#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1457
1458void mgmt_fill_version_info(void *ver);
1459int mgmt_new_settings(struct hci_dev *hdev);
1460void mgmt_index_added(struct hci_dev *hdev);
1461void mgmt_index_removed(struct hci_dev *hdev);
1462void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1463void mgmt_power_on(struct hci_dev *hdev, int err);
1464void __mgmt_power_off(struct hci_dev *hdev);
1465void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1466 bool persistent);
1467void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1468 u32 flags, u8 *name, u8 name_len);
1469void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1470 u8 link_type, u8 addr_type, u8 reason,
1471 bool mgmt_connected);
1472void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1473 u8 link_type, u8 addr_type, u8 status);
1474void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1475 u8 addr_type, u8 status);
1476void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1477void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1478 u8 status);
1479void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 status);
1481int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 link_type, u8 addr_type, u32 value,
1483 u8 confirm_hint);
1484int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1485 u8 link_type, u8 addr_type, u8 status);
1486int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type);
1490int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type, u8 status);
1492int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u32 passkey,
1496 u8 entered);
1497void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1498void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1499void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1500void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1501 u8 status);
1502void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1503void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1504void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1505void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1508void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1509 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1510void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1511bool mgmt_powering_down(struct hci_dev *hdev);
1512void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1513void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1514void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1515 bool persistent);
1516void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1517 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1518 u16 max_interval, u16 latency, u16 timeout);
1519void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1520bool mgmt_get_connectable(struct hci_dev *hdev);
1521void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1522void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1523u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1524void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1525 u8 instance);
1526void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1527 u8 instance);
1528
1529u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1530 u16 to_multiplier);
1531void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1532 __u8 ltk[16], __u8 key_size);
1533
1534void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 *bdaddr_type);
1536
1537#define SCO_AIRMODE_MASK 0x0003
1538#define SCO_AIRMODE_CVSD 0x0000
1539#define SCO_AIRMODE_TRANSP 0x0003
1540
1541#endif /* __HCI_CORE_H */