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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 <net/bluetooth/hci.h>
29
30/* HCI priority */
31#define HCI_PRIO_MAX 7
32
33/* HCI Core structures */
34struct inquiry_data {
35 bdaddr_t bdaddr;
36 __u8 pscan_rep_mode;
37 __u8 pscan_period_mode;
38 __u8 pscan_mode;
39 __u8 dev_class[3];
40 __le16 clock_offset;
41 __s8 rssi;
42 __u8 ssp_mode;
43};
44
45struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
48 enum {
49 NAME_NOT_KNOWN,
50 NAME_NEEDED,
51 NAME_PENDING,
52 NAME_KNOWN,
53 } name_state;
54 __u32 timestamp;
55 struct inquiry_data data;
56};
57
58struct discovery_state {
59 int type;
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_FINDING,
64 DISCOVERY_RESOLVING,
65 DISCOVERY_STOPPING,
66 } state;
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
70 __u32 timestamp;
71};
72
73struct hci_conn_hash {
74 struct list_head list;
75 unsigned int acl_num;
76 unsigned int amp_num;
77 unsigned int sco_num;
78 unsigned int le_num;
79};
80
81struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84 u8 bdaddr_type;
85};
86
87struct bt_uuid {
88 struct list_head list;
89 u8 uuid[16];
90 u8 size;
91 u8 svc_hint;
92};
93
94struct smp_csrk {
95 bdaddr_t bdaddr;
96 u8 bdaddr_type;
97 u8 master;
98 u8 val[16];
99};
100
101struct smp_ltk {
102 struct list_head list;
103 bdaddr_t bdaddr;
104 u8 bdaddr_type;
105 u8 authenticated;
106 u8 type;
107 u8 enc_size;
108 __le16 ediv;
109 __le64 rand;
110 u8 val[16];
111};
112
113struct smp_irk {
114 struct list_head list;
115 bdaddr_t rpa;
116 bdaddr_t bdaddr;
117 u8 addr_type;
118 u8 val[16];
119};
120
121struct link_key {
122 struct list_head list;
123 bdaddr_t bdaddr;
124 u8 type;
125 u8 val[HCI_LINK_KEY_SIZE];
126 u8 pin_len;
127};
128
129struct oob_data {
130 struct list_head list;
131 bdaddr_t bdaddr;
132 u8 hash192[16];
133 u8 randomizer192[16];
134 u8 hash256[16];
135 u8 randomizer256[16];
136};
137
138#define HCI_MAX_SHORT_NAME_LENGTH 10
139
140/* Default LE RPA expiry time, 15 minutes */
141#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
142
143struct amp_assoc {
144 __u16 len;
145 __u16 offset;
146 __u16 rem_len;
147 __u16 len_so_far;
148 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
149};
150
151#define HCI_MAX_PAGES 3
152
153#define NUM_REASSEMBLY 4
154struct hci_dev {
155 struct list_head list;
156 struct mutex lock;
157
158 char name[8];
159 unsigned long flags;
160 __u16 id;
161 __u8 bus;
162 __u8 dev_type;
163 bdaddr_t bdaddr;
164 bdaddr_t random_addr;
165 bdaddr_t static_addr;
166 __u8 adv_addr_type;
167 __u8 dev_name[HCI_MAX_NAME_LENGTH];
168 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
169 __u8 eir[HCI_MAX_EIR_LENGTH];
170 __u8 dev_class[3];
171 __u8 major_class;
172 __u8 minor_class;
173 __u8 max_page;
174 __u8 features[HCI_MAX_PAGES][8];
175 __u8 le_features[8];
176 __u8 le_white_list_size;
177 __u8 le_states[8];
178 __u8 commands[64];
179 __u8 hci_ver;
180 __u16 hci_rev;
181 __u8 lmp_ver;
182 __u16 manufacturer;
183 __u16 lmp_subver;
184 __u16 voice_setting;
185 __u8 num_iac;
186 __u8 io_capability;
187 __s8 inq_tx_power;
188 __u16 page_scan_interval;
189 __u16 page_scan_window;
190 __u8 page_scan_type;
191 __u8 le_adv_channel_map;
192 __u8 le_scan_type;
193 __u16 le_scan_interval;
194 __u16 le_scan_window;
195 __u16 le_conn_min_interval;
196 __u16 le_conn_max_interval;
197 __u8 ssp_debug_mode;
198
199 __u16 devid_source;
200 __u16 devid_vendor;
201 __u16 devid_product;
202 __u16 devid_version;
203
204 __u16 pkt_type;
205 __u16 esco_type;
206 __u16 link_policy;
207 __u16 link_mode;
208
209 __u32 idle_timeout;
210 __u16 sniff_min_interval;
211 __u16 sniff_max_interval;
212
213 __u8 amp_status;
214 __u32 amp_total_bw;
215 __u32 amp_max_bw;
216 __u32 amp_min_latency;
217 __u32 amp_max_pdu;
218 __u8 amp_type;
219 __u16 amp_pal_cap;
220 __u16 amp_assoc_size;
221 __u32 amp_max_flush_to;
222 __u32 amp_be_flush_to;
223
224 struct amp_assoc loc_assoc;
225
226 __u8 flow_ctl_mode;
227
228 unsigned int auto_accept_delay;
229
230 unsigned long quirks;
231
232 atomic_t cmd_cnt;
233 unsigned int acl_cnt;
234 unsigned int sco_cnt;
235 unsigned int le_cnt;
236
237 unsigned int acl_mtu;
238 unsigned int sco_mtu;
239 unsigned int le_mtu;
240 unsigned int acl_pkts;
241 unsigned int sco_pkts;
242 unsigned int le_pkts;
243
244 __u16 block_len;
245 __u16 block_mtu;
246 __u16 num_blocks;
247 __u16 block_cnt;
248
249 unsigned long acl_last_tx;
250 unsigned long sco_last_tx;
251 unsigned long le_last_tx;
252
253 struct workqueue_struct *workqueue;
254 struct workqueue_struct *req_workqueue;
255
256 struct work_struct power_on;
257 struct delayed_work power_off;
258
259 __u16 discov_timeout;
260 struct delayed_work discov_off;
261
262 struct delayed_work service_cache;
263
264 struct timer_list cmd_timer;
265
266 struct work_struct rx_work;
267 struct work_struct cmd_work;
268 struct work_struct tx_work;
269
270 struct sk_buff_head rx_q;
271 struct sk_buff_head raw_q;
272 struct sk_buff_head cmd_q;
273
274 struct sk_buff *recv_evt;
275 struct sk_buff *sent_cmd;
276 struct sk_buff *reassembly[NUM_REASSEMBLY];
277
278 struct mutex req_lock;
279 wait_queue_head_t req_wait_q;
280 __u32 req_status;
281 __u32 req_result;
282
283 struct crypto_blkcipher *tfm_aes;
284
285 struct discovery_state discovery;
286 struct hci_conn_hash conn_hash;
287
288 struct list_head mgmt_pending;
289 struct list_head blacklist;
290 struct list_head uuids;
291 struct list_head link_keys;
292 struct list_head long_term_keys;
293 struct list_head identity_resolving_keys;
294 struct list_head remote_oob_data;
295 struct list_head le_white_list;
296 struct list_head le_conn_params;
297 struct list_head pend_le_conns;
298
299 struct hci_dev_stats stat;
300
301 atomic_t promisc;
302
303 struct dentry *debugfs;
304
305 struct device dev;
306
307 struct rfkill *rfkill;
308
309 unsigned long dev_flags;
310
311 struct delayed_work le_scan_disable;
312
313 __s8 adv_tx_power;
314 __u8 adv_data[HCI_MAX_AD_LENGTH];
315 __u8 adv_data_len;
316 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
317 __u8 scan_rsp_data_len;
318
319 __u8 irk[16];
320 __u32 rpa_timeout;
321 struct delayed_work rpa_expired;
322 bdaddr_t rpa;
323
324 int (*open)(struct hci_dev *hdev);
325 int (*close)(struct hci_dev *hdev);
326 int (*flush)(struct hci_dev *hdev);
327 int (*setup)(struct hci_dev *hdev);
328 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
329 void (*notify)(struct hci_dev *hdev, unsigned int evt);
330};
331
332#define HCI_PHY_HANDLE(handle) (handle & 0xff)
333
334struct hci_conn {
335 struct list_head list;
336
337 atomic_t refcnt;
338
339 bdaddr_t dst;
340 __u8 dst_type;
341 bdaddr_t src;
342 __u8 src_type;
343 bdaddr_t init_addr;
344 __u8 init_addr_type;
345 bdaddr_t resp_addr;
346 __u8 resp_addr_type;
347 __u16 handle;
348 __u16 state;
349 __u8 mode;
350 __u8 type;
351 bool out;
352 __u8 attempt;
353 __u8 dev_class[3];
354 __u8 features[HCI_MAX_PAGES][8];
355 __u16 pkt_type;
356 __u16 link_policy;
357 __u32 link_mode;
358 __u8 key_type;
359 __u8 auth_type;
360 __u8 sec_level;
361 __u8 pending_sec_level;
362 __u8 pin_length;
363 __u8 enc_key_size;
364 __u8 io_capability;
365 __u32 passkey_notify;
366 __u8 passkey_entered;
367 __u16 disc_timeout;
368 __u16 setting;
369 __u16 le_conn_min_interval;
370 __u16 le_conn_max_interval;
371 unsigned long flags;
372
373 __u8 remote_cap;
374 __u8 remote_auth;
375 __u8 remote_id;
376 bool flush_key;
377
378 unsigned int sent;
379
380 struct sk_buff_head data_q;
381 struct list_head chan_list;
382
383 struct delayed_work disc_work;
384 struct delayed_work auto_accept_work;
385 struct delayed_work idle_work;
386 struct delayed_work le_conn_timeout;
387
388 struct device dev;
389
390 struct hci_dev *hdev;
391 void *l2cap_data;
392 void *sco_data;
393 void *smp_conn;
394 struct amp_mgr *amp_mgr;
395
396 struct hci_conn *link;
397
398 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
399 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
400 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
401};
402
403struct hci_chan {
404 struct list_head list;
405 __u16 handle;
406 struct hci_conn *conn;
407 struct sk_buff_head data_q;
408 unsigned int sent;
409 __u8 state;
410};
411
412struct hci_conn_params {
413 struct list_head list;
414
415 bdaddr_t addr;
416 u8 addr_type;
417
418 u16 conn_min_interval;
419 u16 conn_max_interval;
420
421 enum {
422 HCI_AUTO_CONN_DISABLED,
423 HCI_AUTO_CONN_ALWAYS,
424 HCI_AUTO_CONN_LINK_LOSS,
425 } auto_connect;
426};
427
428extern struct list_head hci_dev_list;
429extern struct list_head hci_cb_list;
430extern rwlock_t hci_dev_list_lock;
431extern rwlock_t hci_cb_list_lock;
432
433/* ----- HCI interface to upper protocols ----- */
434int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
435void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
436int l2cap_disconn_ind(struct hci_conn *hcon);
437void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
438int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
439int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
440
441int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
442void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
443void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
444int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
445
446/* ----- Inquiry cache ----- */
447#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
448#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
449
450static inline void discovery_init(struct hci_dev *hdev)
451{
452 hdev->discovery.state = DISCOVERY_STOPPED;
453 INIT_LIST_HEAD(&hdev->discovery.all);
454 INIT_LIST_HEAD(&hdev->discovery.unknown);
455 INIT_LIST_HEAD(&hdev->discovery.resolve);
456}
457
458bool hci_discovery_active(struct hci_dev *hdev);
459
460void hci_discovery_set_state(struct hci_dev *hdev, int state);
461
462static inline int inquiry_cache_empty(struct hci_dev *hdev)
463{
464 return list_empty(&hdev->discovery.all);
465}
466
467static inline long inquiry_cache_age(struct hci_dev *hdev)
468{
469 struct discovery_state *c = &hdev->discovery;
470 return jiffies - c->timestamp;
471}
472
473static inline long inquiry_entry_age(struct inquiry_entry *e)
474{
475 return jiffies - e->timestamp;
476}
477
478struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
479 bdaddr_t *bdaddr);
480struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
481 bdaddr_t *bdaddr);
482struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
483 bdaddr_t *bdaddr,
484 int state);
485void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
486 struct inquiry_entry *ie);
487bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
488 bool name_known, bool *ssp);
489void hci_inquiry_cache_flush(struct hci_dev *hdev);
490
491/* ----- HCI Connections ----- */
492enum {
493 HCI_CONN_AUTH_PEND,
494 HCI_CONN_REAUTH_PEND,
495 HCI_CONN_ENCRYPT_PEND,
496 HCI_CONN_RSWITCH_PEND,
497 HCI_CONN_MODE_CHANGE_PEND,
498 HCI_CONN_SCO_SETUP_PEND,
499 HCI_CONN_LE_SMP_PEND,
500 HCI_CONN_MGMT_CONNECTED,
501 HCI_CONN_SSP_ENABLED,
502 HCI_CONN_SC_ENABLED,
503 HCI_CONN_AES_CCM,
504 HCI_CONN_POWER_SAVE,
505 HCI_CONN_REMOTE_OOB,
506 HCI_CONN_6LOWPAN,
507};
508
509static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
510{
511 struct hci_dev *hdev = conn->hdev;
512 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
513 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
514}
515
516static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
517{
518 struct hci_dev *hdev = conn->hdev;
519 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
520 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
521}
522
523static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
524{
525 struct hci_conn_hash *h = &hdev->conn_hash;
526 list_add_rcu(&c->list, &h->list);
527 switch (c->type) {
528 case ACL_LINK:
529 h->acl_num++;
530 break;
531 case AMP_LINK:
532 h->amp_num++;
533 break;
534 case LE_LINK:
535 h->le_num++;
536 break;
537 case SCO_LINK:
538 case ESCO_LINK:
539 h->sco_num++;
540 break;
541 }
542}
543
544static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
545{
546 struct hci_conn_hash *h = &hdev->conn_hash;
547
548 list_del_rcu(&c->list);
549 synchronize_rcu();
550
551 switch (c->type) {
552 case ACL_LINK:
553 h->acl_num--;
554 break;
555 case AMP_LINK:
556 h->amp_num--;
557 break;
558 case LE_LINK:
559 h->le_num--;
560 break;
561 case SCO_LINK:
562 case ESCO_LINK:
563 h->sco_num--;
564 break;
565 }
566}
567
568static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
569{
570 struct hci_conn_hash *h = &hdev->conn_hash;
571 switch (type) {
572 case ACL_LINK:
573 return h->acl_num;
574 case AMP_LINK:
575 return h->amp_num;
576 case LE_LINK:
577 return h->le_num;
578 case SCO_LINK:
579 case ESCO_LINK:
580 return h->sco_num;
581 default:
582 return 0;
583 }
584}
585
586static inline unsigned int hci_conn_count(struct hci_dev *hdev)
587{
588 struct hci_conn_hash *c = &hdev->conn_hash;
589
590 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
591}
592
593static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
594 __u16 handle)
595{
596 struct hci_conn_hash *h = &hdev->conn_hash;
597 struct hci_conn *c;
598
599 rcu_read_lock();
600
601 list_for_each_entry_rcu(c, &h->list, list) {
602 if (c->handle == handle) {
603 rcu_read_unlock();
604 return c;
605 }
606 }
607 rcu_read_unlock();
608
609 return NULL;
610}
611
612static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
613 __u8 type, bdaddr_t *ba)
614{
615 struct hci_conn_hash *h = &hdev->conn_hash;
616 struct hci_conn *c;
617
618 rcu_read_lock();
619
620 list_for_each_entry_rcu(c, &h->list, list) {
621 if (c->type == type && !bacmp(&c->dst, ba)) {
622 rcu_read_unlock();
623 return c;
624 }
625 }
626
627 rcu_read_unlock();
628
629 return NULL;
630}
631
632static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
633 __u8 type, __u16 state)
634{
635 struct hci_conn_hash *h = &hdev->conn_hash;
636 struct hci_conn *c;
637
638 rcu_read_lock();
639
640 list_for_each_entry_rcu(c, &h->list, list) {
641 if (c->type == type && c->state == state) {
642 rcu_read_unlock();
643 return c;
644 }
645 }
646
647 rcu_read_unlock();
648
649 return NULL;
650}
651
652void hci_disconnect(struct hci_conn *conn, __u8 reason);
653bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
654void hci_sco_setup(struct hci_conn *conn, __u8 status);
655
656struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
657int hci_conn_del(struct hci_conn *conn);
658void hci_conn_hash_flush(struct hci_dev *hdev);
659void hci_conn_check_pending(struct hci_dev *hdev);
660
661struct hci_chan *hci_chan_create(struct hci_conn *conn);
662void hci_chan_del(struct hci_chan *chan);
663void hci_chan_list_flush(struct hci_conn *conn);
664struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
665
666struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
667 u8 dst_type, u8 sec_level, u8 auth_type);
668struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
669 u8 sec_level, u8 auth_type);
670struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
671 __u16 setting);
672int hci_conn_check_link_mode(struct hci_conn *conn);
673int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
674int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
675int hci_conn_change_link_key(struct hci_conn *conn);
676int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
677
678void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
679
680void hci_le_conn_failed(struct hci_conn *conn, u8 status);
681
682/*
683 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
684 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
685 * working or anything else. They just guarantee that the object is available
686 * and can be dereferenced. So you can use its locks, local variables and any
687 * other constant data.
688 * Before accessing runtime data, you _must_ lock the object and then check that
689 * it is still running. As soon as you release the locks, the connection might
690 * get dropped, though.
691 *
692 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
693 * how long the underlying connection is held. So every channel that runs on the
694 * hci_conn object calls this to prevent the connection from disappearing. As
695 * long as you hold a device, you must also guarantee that you have a valid
696 * reference to the device via hci_conn_get() (or the initial reference from
697 * hci_conn_add()).
698 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
699 * break because nobody cares for that. But this means, we cannot use
700 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
701 */
702
703static inline void hci_conn_get(struct hci_conn *conn)
704{
705 get_device(&conn->dev);
706}
707
708static inline void hci_conn_put(struct hci_conn *conn)
709{
710 put_device(&conn->dev);
711}
712
713static inline void hci_conn_hold(struct hci_conn *conn)
714{
715 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
716
717 atomic_inc(&conn->refcnt);
718 cancel_delayed_work(&conn->disc_work);
719}
720
721static inline void hci_conn_drop(struct hci_conn *conn)
722{
723 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
724
725 if (atomic_dec_and_test(&conn->refcnt)) {
726 unsigned long timeo;
727
728 switch (conn->type) {
729 case ACL_LINK:
730 case LE_LINK:
731 cancel_delayed_work(&conn->idle_work);
732 if (conn->state == BT_CONNECTED) {
733 timeo = conn->disc_timeout;
734 if (!conn->out)
735 timeo *= 2;
736 } else {
737 timeo = msecs_to_jiffies(10);
738 }
739 break;
740
741 case AMP_LINK:
742 timeo = conn->disc_timeout;
743 break;
744
745 default:
746 timeo = msecs_to_jiffies(10);
747 break;
748 }
749
750 cancel_delayed_work(&conn->disc_work);
751 queue_delayed_work(conn->hdev->workqueue,
752 &conn->disc_work, timeo);
753 }
754}
755
756/* ----- HCI Devices ----- */
757static inline void hci_dev_put(struct hci_dev *d)
758{
759 BT_DBG("%s orig refcnt %d", d->name,
760 atomic_read(&d->dev.kobj.kref.refcount));
761
762 put_device(&d->dev);
763}
764
765static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
766{
767 BT_DBG("%s orig refcnt %d", d->name,
768 atomic_read(&d->dev.kobj.kref.refcount));
769
770 get_device(&d->dev);
771 return d;
772}
773
774#define hci_dev_lock(d) mutex_lock(&d->lock)
775#define hci_dev_unlock(d) mutex_unlock(&d->lock)
776
777#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
778#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
779
780static inline void *hci_get_drvdata(struct hci_dev *hdev)
781{
782 return dev_get_drvdata(&hdev->dev);
783}
784
785static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
786{
787 dev_set_drvdata(&hdev->dev, data);
788}
789
790struct hci_dev *hci_dev_get(int index);
791struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
792
793struct hci_dev *hci_alloc_dev(void);
794void hci_free_dev(struct hci_dev *hdev);
795int hci_register_dev(struct hci_dev *hdev);
796void hci_unregister_dev(struct hci_dev *hdev);
797int hci_suspend_dev(struct hci_dev *hdev);
798int hci_resume_dev(struct hci_dev *hdev);
799int hci_dev_open(__u16 dev);
800int hci_dev_close(__u16 dev);
801int hci_dev_reset(__u16 dev);
802int hci_dev_reset_stat(__u16 dev);
803int hci_dev_cmd(unsigned int cmd, void __user *arg);
804int hci_get_dev_list(void __user *arg);
805int hci_get_dev_info(void __user *arg);
806int hci_get_conn_list(void __user *arg);
807int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
808int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
809int hci_inquiry(void __user *arg);
810
811struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
812 bdaddr_t *bdaddr, u8 type);
813int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
814int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
815
816struct bdaddr_list *hci_white_list_lookup(struct hci_dev *hdev,
817 bdaddr_t *bdaddr, u8 type);
818void hci_white_list_clear(struct hci_dev *hdev);
819int hci_white_list_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
820int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
821
822struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
823 bdaddr_t *addr, u8 addr_type);
824int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
825 u8 auto_connect, u16 conn_min_interval,
826 u16 conn_max_interval);
827void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
828void hci_conn_params_clear(struct hci_dev *hdev);
829
830struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
831 bdaddr_t *addr, u8 addr_type);
832void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
833void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
834void hci_pend_le_conns_clear(struct hci_dev *hdev);
835
836void hci_update_background_scan(struct hci_dev *hdev);
837
838void hci_uuids_clear(struct hci_dev *hdev);
839
840void hci_link_keys_clear(struct hci_dev *hdev);
841struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
842int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
843 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
844struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
845 bool master);
846struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
847 u8 addr_type, u8 type, u8 authenticated,
848 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
849struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
850 u8 addr_type, bool master);
851int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
852void hci_smp_ltks_clear(struct hci_dev *hdev);
853int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
854
855struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
856struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
857 u8 addr_type);
858struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
859 u8 addr_type, u8 val[16], bdaddr_t *rpa);
860void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
861void hci_smp_irks_clear(struct hci_dev *hdev);
862
863void hci_remote_oob_data_clear(struct hci_dev *hdev);
864struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
865 bdaddr_t *bdaddr);
866int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 u8 *hash, u8 *randomizer);
868int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
869 u8 *hash192, u8 *randomizer192,
870 u8 *hash256, u8 *randomizer256);
871int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
872
873void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
874
875int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
876int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
877int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
878
879void hci_init_sysfs(struct hci_dev *hdev);
880void hci_conn_init_sysfs(struct hci_conn *conn);
881void hci_conn_add_sysfs(struct hci_conn *conn);
882void hci_conn_del_sysfs(struct hci_conn *conn);
883
884#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
885
886/* ----- LMP capabilities ----- */
887#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
888#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
889#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
890#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
891#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
892#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
893#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
894#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
895#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
896#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
897#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
898#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
899#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
900#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
901#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
902#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
903#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
904#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
905#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
906
907/* ----- Extended LMP capabilities ----- */
908#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
909#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
910#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
911#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
912#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
913#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
914
915/* ----- Host capabilities ----- */
916#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
917#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
918#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
919#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
920
921/* ----- HCI protocols ----- */
922#define HCI_PROTO_DEFER 0x01
923
924static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
925 __u8 type, __u8 *flags)
926{
927 switch (type) {
928 case ACL_LINK:
929 return l2cap_connect_ind(hdev, bdaddr);
930
931 case SCO_LINK:
932 case ESCO_LINK:
933 return sco_connect_ind(hdev, bdaddr, flags);
934
935 default:
936 BT_ERR("unknown link type %d", type);
937 return -EINVAL;
938 }
939}
940
941static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
942{
943 switch (conn->type) {
944 case ACL_LINK:
945 case LE_LINK:
946 l2cap_connect_cfm(conn, status);
947 break;
948
949 case SCO_LINK:
950 case ESCO_LINK:
951 sco_connect_cfm(conn, status);
952 break;
953
954 default:
955 BT_ERR("unknown link type %d", conn->type);
956 break;
957 }
958
959 if (conn->connect_cfm_cb)
960 conn->connect_cfm_cb(conn, status);
961}
962
963static inline int hci_proto_disconn_ind(struct hci_conn *conn)
964{
965 if (conn->type != ACL_LINK && conn->type != LE_LINK)
966 return HCI_ERROR_REMOTE_USER_TERM;
967
968 return l2cap_disconn_ind(conn);
969}
970
971static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
972{
973 switch (conn->type) {
974 case ACL_LINK:
975 case LE_LINK:
976 l2cap_disconn_cfm(conn, reason);
977 break;
978
979 case SCO_LINK:
980 case ESCO_LINK:
981 sco_disconn_cfm(conn, reason);
982 break;
983
984 /* L2CAP would be handled for BREDR chan */
985 case AMP_LINK:
986 break;
987
988 default:
989 BT_ERR("unknown link type %d", conn->type);
990 break;
991 }
992
993 if (conn->disconn_cfm_cb)
994 conn->disconn_cfm_cb(conn, reason);
995}
996
997static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
998{
999 __u8 encrypt;
1000
1001 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1002 return;
1003
1004 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1005 return;
1006
1007 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1008 l2cap_security_cfm(conn, status, encrypt);
1009
1010 if (conn->security_cfm_cb)
1011 conn->security_cfm_cb(conn, status);
1012}
1013
1014static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1015 __u8 encrypt)
1016{
1017 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1018 return;
1019
1020 l2cap_security_cfm(conn, status, encrypt);
1021
1022 if (conn->security_cfm_cb)
1023 conn->security_cfm_cb(conn, status);
1024}
1025
1026/* ----- HCI callbacks ----- */
1027struct hci_cb {
1028 struct list_head list;
1029
1030 char *name;
1031
1032 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1033 __u8 encrypt);
1034 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1035 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1036};
1037
1038static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1039{
1040 struct hci_cb *cb;
1041 __u8 encrypt;
1042
1043 hci_proto_auth_cfm(conn, status);
1044
1045 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1046 return;
1047
1048 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1049
1050 read_lock(&hci_cb_list_lock);
1051 list_for_each_entry(cb, &hci_cb_list, list) {
1052 if (cb->security_cfm)
1053 cb->security_cfm(conn, status, encrypt);
1054 }
1055 read_unlock(&hci_cb_list_lock);
1056}
1057
1058static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1059 __u8 encrypt)
1060{
1061 struct hci_cb *cb;
1062
1063 if (conn->sec_level == BT_SECURITY_SDP)
1064 conn->sec_level = BT_SECURITY_LOW;
1065
1066 if (conn->pending_sec_level > conn->sec_level)
1067 conn->sec_level = conn->pending_sec_level;
1068
1069 hci_proto_encrypt_cfm(conn, status, encrypt);
1070
1071 read_lock(&hci_cb_list_lock);
1072 list_for_each_entry(cb, &hci_cb_list, list) {
1073 if (cb->security_cfm)
1074 cb->security_cfm(conn, status, encrypt);
1075 }
1076 read_unlock(&hci_cb_list_lock);
1077}
1078
1079static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1080{
1081 struct hci_cb *cb;
1082
1083 read_lock(&hci_cb_list_lock);
1084 list_for_each_entry(cb, &hci_cb_list, list) {
1085 if (cb->key_change_cfm)
1086 cb->key_change_cfm(conn, status);
1087 }
1088 read_unlock(&hci_cb_list_lock);
1089}
1090
1091static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1092 __u8 role)
1093{
1094 struct hci_cb *cb;
1095
1096 read_lock(&hci_cb_list_lock);
1097 list_for_each_entry(cb, &hci_cb_list, list) {
1098 if (cb->role_switch_cfm)
1099 cb->role_switch_cfm(conn, status, role);
1100 }
1101 read_unlock(&hci_cb_list_lock);
1102}
1103
1104static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1105{
1106 size_t parsed = 0;
1107
1108 if (data_len < 2)
1109 return false;
1110
1111 while (parsed < data_len - 1) {
1112 u8 field_len = data[0];
1113
1114 if (field_len == 0)
1115 break;
1116
1117 parsed += field_len + 1;
1118
1119 if (parsed > data_len)
1120 break;
1121
1122 if (data[1] == type)
1123 return true;
1124
1125 data += field_len + 1;
1126 }
1127
1128 return false;
1129}
1130
1131static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1132{
1133 if (addr_type != 0x01)
1134 return false;
1135
1136 if ((bdaddr->b[5] & 0xc0) == 0x40)
1137 return true;
1138
1139 return false;
1140}
1141
1142static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1143 bdaddr_t *bdaddr, u8 addr_type)
1144{
1145 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1146 return NULL;
1147
1148 return hci_find_irk_by_rpa(hdev, bdaddr);
1149}
1150
1151int hci_register_cb(struct hci_cb *hcb);
1152int hci_unregister_cb(struct hci_cb *hcb);
1153
1154struct hci_request {
1155 struct hci_dev *hdev;
1156 struct sk_buff_head cmd_q;
1157
1158 /* If something goes wrong when building the HCI request, the error
1159 * value is stored in this field.
1160 */
1161 int err;
1162};
1163
1164void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1165int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1166void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1167 const void *param);
1168void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1169 const void *param, u8 event);
1170void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1171
1172void hci_req_add_le_scan_disable(struct hci_request *req);
1173void hci_req_add_le_passive_scan(struct hci_request *req);
1174
1175struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1176 const void *param, u32 timeout);
1177struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1178 const void *param, u8 event, u32 timeout);
1179
1180int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1181 const void *param);
1182void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1183void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1184
1185void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1186
1187/* ----- HCI Sockets ----- */
1188void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1189void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1190void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1191
1192void hci_sock_dev_event(struct hci_dev *hdev, int event);
1193
1194/* Management interface */
1195#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1196#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1197 BIT(BDADDR_LE_RANDOM))
1198#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1199 BIT(BDADDR_LE_PUBLIC) | \
1200 BIT(BDADDR_LE_RANDOM))
1201
1202/* These LE scan and inquiry parameters were chosen according to LE General
1203 * Discovery Procedure specification.
1204 */
1205#define DISCOV_LE_SCAN_WIN 0x12
1206#define DISCOV_LE_SCAN_INT 0x12
1207#define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1208#define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1209#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1210#define DISCOV_BREDR_INQUIRY_LEN 0x08
1211
1212int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1213void mgmt_index_added(struct hci_dev *hdev);
1214void mgmt_index_removed(struct hci_dev *hdev);
1215void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1216int mgmt_powered(struct hci_dev *hdev, u8 powered);
1217void mgmt_discoverable_timeout(struct hci_dev *hdev);
1218void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1219void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1220void mgmt_advertising(struct hci_dev *hdev, u8 advertising);
1221void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1222void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1223 bool persistent);
1224void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1225 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1226 u8 *dev_class);
1227void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1228 u8 link_type, u8 addr_type, u8 reason,
1229 bool mgmt_connected);
1230void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1231 u8 link_type, u8 addr_type, u8 status);
1232void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1233 u8 addr_type, u8 status);
1234void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1235void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1236 u8 status);
1237void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1238 u8 status);
1239int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1240 u8 link_type, u8 addr_type, u32 value,
1241 u8 confirm_hint);
1242int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1243 u8 link_type, u8 addr_type, u8 status);
1244int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1245 u8 link_type, u8 addr_type, u8 status);
1246int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1247 u8 link_type, u8 addr_type);
1248int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1249 u8 link_type, u8 addr_type, u8 status);
1250int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1251 u8 link_type, u8 addr_type, u8 status);
1252int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1253 u8 link_type, u8 addr_type, u32 passkey,
1254 u8 entered);
1255void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1256 u8 addr_type, u8 status);
1257void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1258void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1259void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1260void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1261 u8 status);
1262void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1263void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1264 u8 *randomizer192, u8 *hash256,
1265 u8 *randomizer256, u8 status);
1266void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1267 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1268 u8 ssp, u8 *eir, u16 eir_len);
1269void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1270 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1271void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1272int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1273int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1274void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1275void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1276void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1277 bool persistent);
1278void mgmt_reenable_advertising(struct hci_dev *hdev);
1279void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1280
1281/* HCI info for socket */
1282#define hci_pi(sk) ((struct hci_pinfo *) sk)
1283
1284struct hci_pinfo {
1285 struct bt_sock bt;
1286 struct hci_dev *hdev;
1287 struct hci_filter filter;
1288 __u32 cmsg_mask;
1289 unsigned short channel;
1290};
1291
1292/* HCI security filter */
1293#define HCI_SFLT_MAX_OGF 5
1294
1295struct hci_sec_filter {
1296 __u32 type_mask;
1297 __u32 event_mask[2];
1298 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1299};
1300
1301/* ----- HCI requests ----- */
1302#define HCI_REQ_DONE 0
1303#define HCI_REQ_PEND 1
1304#define HCI_REQ_CANCELED 2
1305
1306#define hci_req_lock(d) mutex_lock(&d->req_lock)
1307#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1308
1309void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1310 u16 latency, u16 to_multiplier);
1311void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1312 __u8 ltk[16]);
1313
1314int hci_update_random_address(struct hci_request *req, bool require_privacy,
1315 u8 *own_addr_type);
1316void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1317 u8 *bdaddr_type);
1318
1319#define SCO_AIRMODE_MASK 0x0003
1320#define SCO_AIRMODE_CVSD 0x0000
1321#define SCO_AIRMODE_TRANSP 0x0003
1322
1323#endif /* __HCI_CORE_H */