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