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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 <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 */
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/leds.h>
29#include <net/bluetooth/hci.h>
30#include <net/bluetooth/hci_sock.h>
31
32/* HCI priority */
33#define HCI_PRIO_MAX 7
34
35/* HCI Core structures */
36struct inquiry_data {
37 bdaddr_t bdaddr;
38 __u8 pscan_rep_mode;
39 __u8 pscan_period_mode;
40 __u8 pscan_mode;
41 __u8 dev_class[3];
42 __le16 clock_offset;
43 __s8 rssi;
44 __u8 ssp_mode;
45};
46
47struct inquiry_entry {
48 struct list_head all; /* inq_cache.all */
49 struct list_head list; /* unknown or resolve */
50 enum {
51 NAME_NOT_KNOWN,
52 NAME_NEEDED,
53 NAME_PENDING,
54 NAME_KNOWN,
55 } name_state;
56 __u32 timestamp;
57 struct inquiry_data data;
58};
59
60struct discovery_state {
61 int type;
62 enum {
63 DISCOVERY_STOPPED,
64 DISCOVERY_STARTING,
65 DISCOVERY_FINDING,
66 DISCOVERY_RESOLVING,
67 DISCOVERY_STOPPING,
68 } state;
69 struct list_head all; /* All devices found during inquiry */
70 struct list_head unknown; /* Name state not known */
71 struct list_head resolve; /* Name needs to be resolved */
72 __u32 timestamp;
73 bdaddr_t last_adv_addr;
74 u8 last_adv_addr_type;
75 s8 last_adv_rssi;
76 u32 last_adv_flags;
77 u8 last_adv_data[HCI_MAX_AD_LENGTH];
78 u8 last_adv_data_len;
79 bool report_invalid_rssi;
80 bool result_filtering;
81 bool limited;
82 s8 rssi;
83 u16 uuid_count;
84 u8 (*uuids)[16];
85 unsigned long scan_start;
86 unsigned long scan_duration;
87};
88
89struct hci_conn_hash {
90 struct list_head list;
91 unsigned int acl_num;
92 unsigned int amp_num;
93 unsigned int sco_num;
94 unsigned int le_num;
95 unsigned int le_num_slave;
96};
97
98struct bdaddr_list {
99 struct list_head list;
100 bdaddr_t bdaddr;
101 u8 bdaddr_type;
102};
103
104struct bt_uuid {
105 struct list_head list;
106 u8 uuid[16];
107 u8 size;
108 u8 svc_hint;
109};
110
111struct smp_csrk {
112 bdaddr_t bdaddr;
113 u8 bdaddr_type;
114 u8 type;
115 u8 val[16];
116};
117
118struct smp_ltk {
119 struct list_head list;
120 struct rcu_head rcu;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123 u8 authenticated;
124 u8 type;
125 u8 enc_size;
126 __le16 ediv;
127 __le64 rand;
128 u8 val[16];
129};
130
131struct smp_irk {
132 struct list_head list;
133 struct rcu_head rcu;
134 bdaddr_t rpa;
135 bdaddr_t bdaddr;
136 u8 addr_type;
137 u8 val[16];
138};
139
140struct link_key {
141 struct list_head list;
142 struct rcu_head rcu;
143 bdaddr_t bdaddr;
144 u8 type;
145 u8 val[HCI_LINK_KEY_SIZE];
146 u8 pin_len;
147};
148
149struct oob_data {
150 struct list_head list;
151 bdaddr_t bdaddr;
152 u8 bdaddr_type;
153 u8 present;
154 u8 hash192[16];
155 u8 rand192[16];
156 u8 hash256[16];
157 u8 rand256[16];
158};
159
160struct adv_info {
161 struct list_head list;
162 bool pending;
163 __u8 instance;
164 __u32 flags;
165 __u16 timeout;
166 __u16 remaining_time;
167 __u16 duration;
168 __u16 adv_data_len;
169 __u8 adv_data[HCI_MAX_AD_LENGTH];
170 __u16 scan_rsp_len;
171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
172};
173
174#define HCI_MAX_ADV_INSTANCES 5
175#define HCI_DEFAULT_ADV_DURATION 2
176
177#define HCI_MAX_SHORT_NAME_LENGTH 10
178
179/* Default LE RPA expiry time, 15 minutes */
180#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
181
182/* Default min/max age of connection information (1s/3s) */
183#define DEFAULT_CONN_INFO_MIN_AGE 1000
184#define DEFAULT_CONN_INFO_MAX_AGE 3000
185
186struct amp_assoc {
187 __u16 len;
188 __u16 offset;
189 __u16 rem_len;
190 __u16 len_so_far;
191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
192};
193
194#define HCI_MAX_PAGES 3
195
196struct hci_dev {
197 struct list_head list;
198 struct mutex lock;
199
200 char name[8];
201 unsigned long flags;
202 __u16 id;
203 __u8 bus;
204 __u8 dev_type;
205 bdaddr_t bdaddr;
206 bdaddr_t setup_addr;
207 bdaddr_t public_addr;
208 bdaddr_t random_addr;
209 bdaddr_t static_addr;
210 __u8 adv_addr_type;
211 __u8 dev_name[HCI_MAX_NAME_LENGTH];
212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
213 __u8 eir[HCI_MAX_EIR_LENGTH];
214 __u16 appearance;
215 __u8 dev_class[3];
216 __u8 major_class;
217 __u8 minor_class;
218 __u8 max_page;
219 __u8 features[HCI_MAX_PAGES][8];
220 __u8 le_features[8];
221 __u8 le_white_list_size;
222 __u8 le_states[8];
223 __u8 commands[64];
224 __u8 hci_ver;
225 __u16 hci_rev;
226 __u8 lmp_ver;
227 __u16 manufacturer;
228 __u16 lmp_subver;
229 __u16 voice_setting;
230 __u8 num_iac;
231 __u8 stored_max_keys;
232 __u8 stored_num_keys;
233 __u8 io_capability;
234 __s8 inq_tx_power;
235 __u16 page_scan_interval;
236 __u16 page_scan_window;
237 __u8 page_scan_type;
238 __u8 le_adv_channel_map;
239 __u16 le_adv_min_interval;
240 __u16 le_adv_max_interval;
241 __u8 le_scan_type;
242 __u16 le_scan_interval;
243 __u16 le_scan_window;
244 __u16 le_conn_min_interval;
245 __u16 le_conn_max_interval;
246 __u16 le_conn_latency;
247 __u16 le_supv_timeout;
248 __u16 le_def_tx_len;
249 __u16 le_def_tx_time;
250 __u16 le_max_tx_len;
251 __u16 le_max_tx_time;
252 __u16 le_max_rx_len;
253 __u16 le_max_rx_time;
254 __u16 discov_interleaved_timeout;
255 __u16 conn_info_min_age;
256 __u16 conn_info_max_age;
257 __u8 ssp_debug_mode;
258 __u8 hw_error_code;
259 __u32 clock;
260
261 __u16 devid_source;
262 __u16 devid_vendor;
263 __u16 devid_product;
264 __u16 devid_version;
265
266 __u16 pkt_type;
267 __u16 esco_type;
268 __u16 link_policy;
269 __u16 link_mode;
270
271 __u32 idle_timeout;
272 __u16 sniff_min_interval;
273 __u16 sniff_max_interval;
274
275 __u8 amp_status;
276 __u32 amp_total_bw;
277 __u32 amp_max_bw;
278 __u32 amp_min_latency;
279 __u32 amp_max_pdu;
280 __u8 amp_type;
281 __u16 amp_pal_cap;
282 __u16 amp_assoc_size;
283 __u32 amp_max_flush_to;
284 __u32 amp_be_flush_to;
285
286 struct amp_assoc loc_assoc;
287
288 __u8 flow_ctl_mode;
289
290 unsigned int auto_accept_delay;
291
292 unsigned long quirks;
293
294 atomic_t cmd_cnt;
295 unsigned int acl_cnt;
296 unsigned int sco_cnt;
297 unsigned int le_cnt;
298
299 unsigned int acl_mtu;
300 unsigned int sco_mtu;
301 unsigned int le_mtu;
302 unsigned int acl_pkts;
303 unsigned int sco_pkts;
304 unsigned int le_pkts;
305
306 __u16 block_len;
307 __u16 block_mtu;
308 __u16 num_blocks;
309 __u16 block_cnt;
310
311 unsigned long acl_last_tx;
312 unsigned long sco_last_tx;
313 unsigned long le_last_tx;
314
315 struct workqueue_struct *workqueue;
316 struct workqueue_struct *req_workqueue;
317
318 struct work_struct power_on;
319 struct delayed_work power_off;
320 struct work_struct error_reset;
321
322 __u16 discov_timeout;
323 struct delayed_work discov_off;
324
325 struct delayed_work service_cache;
326
327 struct delayed_work cmd_timer;
328
329 struct work_struct rx_work;
330 struct work_struct cmd_work;
331 struct work_struct tx_work;
332
333 struct work_struct discov_update;
334 struct work_struct bg_scan_update;
335 struct work_struct scan_update;
336 struct work_struct connectable_update;
337 struct work_struct discoverable_update;
338 struct delayed_work le_scan_disable;
339 struct delayed_work le_scan_restart;
340
341 struct sk_buff_head rx_q;
342 struct sk_buff_head raw_q;
343 struct sk_buff_head cmd_q;
344
345 struct sk_buff *sent_cmd;
346
347 struct mutex req_lock;
348 wait_queue_head_t req_wait_q;
349 __u32 req_status;
350 __u32 req_result;
351 struct sk_buff *req_skb;
352
353 void *smp_data;
354 void *smp_bredr_data;
355
356 struct discovery_state discovery;
357 struct hci_conn_hash conn_hash;
358
359 struct list_head mgmt_pending;
360 struct list_head blacklist;
361 struct list_head whitelist;
362 struct list_head uuids;
363 struct list_head link_keys;
364 struct list_head long_term_keys;
365 struct list_head identity_resolving_keys;
366 struct list_head remote_oob_data;
367 struct list_head le_white_list;
368 struct list_head le_conn_params;
369 struct list_head pend_le_conns;
370 struct list_head pend_le_reports;
371
372 struct hci_dev_stats stat;
373
374 atomic_t promisc;
375
376 const char *hw_info;
377 const char *fw_info;
378 struct dentry *debugfs;
379
380 struct device dev;
381
382 struct rfkill *rfkill;
383
384 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
385
386 __s8 adv_tx_power;
387 __u8 adv_data[HCI_MAX_AD_LENGTH];
388 __u8 adv_data_len;
389 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
390 __u8 scan_rsp_data_len;
391
392 struct list_head adv_instances;
393 unsigned int adv_instance_cnt;
394 __u8 cur_adv_instance;
395 __u16 adv_instance_timeout;
396 struct delayed_work adv_instance_expire;
397
398 __u8 irk[16];
399 __u32 rpa_timeout;
400 struct delayed_work rpa_expired;
401 bdaddr_t rpa;
402
403#if IS_ENABLED(CONFIG_BT_LEDS)
404 struct led_trigger *power_led;
405#endif
406
407 int (*open)(struct hci_dev *hdev);
408 int (*close)(struct hci_dev *hdev);
409 int (*flush)(struct hci_dev *hdev);
410 int (*setup)(struct hci_dev *hdev);
411 int (*shutdown)(struct hci_dev *hdev);
412 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
413 void (*notify)(struct hci_dev *hdev, unsigned int evt);
414 void (*hw_error)(struct hci_dev *hdev, u8 code);
415 int (*post_init)(struct hci_dev *hdev);
416 int (*set_diag)(struct hci_dev *hdev, bool enable);
417 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
418};
419
420#define HCI_PHY_HANDLE(handle) (handle & 0xff)
421
422struct hci_conn {
423 struct list_head list;
424
425 atomic_t refcnt;
426
427 bdaddr_t dst;
428 __u8 dst_type;
429 bdaddr_t src;
430 __u8 src_type;
431 bdaddr_t init_addr;
432 __u8 init_addr_type;
433 bdaddr_t resp_addr;
434 __u8 resp_addr_type;
435 __u16 handle;
436 __u16 state;
437 __u8 mode;
438 __u8 type;
439 __u8 role;
440 bool out;
441 __u8 attempt;
442 __u8 dev_class[3];
443 __u8 features[HCI_MAX_PAGES][8];
444 __u16 pkt_type;
445 __u16 link_policy;
446 __u8 key_type;
447 __u8 auth_type;
448 __u8 sec_level;
449 __u8 pending_sec_level;
450 __u8 pin_length;
451 __u8 enc_key_size;
452 __u8 io_capability;
453 __u32 passkey_notify;
454 __u8 passkey_entered;
455 __u16 disc_timeout;
456 __u16 conn_timeout;
457 __u16 setting;
458 __u16 le_conn_min_interval;
459 __u16 le_conn_max_interval;
460 __u16 le_conn_interval;
461 __u16 le_conn_latency;
462 __u16 le_supv_timeout;
463 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
464 __u8 le_adv_data_len;
465 __s8 rssi;
466 __s8 tx_power;
467 __s8 max_tx_power;
468 unsigned long flags;
469
470 __u32 clock;
471 __u16 clock_accuracy;
472
473 unsigned long conn_info_timestamp;
474
475 __u8 remote_cap;
476 __u8 remote_auth;
477 __u8 remote_id;
478
479 unsigned int sent;
480
481 struct sk_buff_head data_q;
482 struct list_head chan_list;
483
484 struct delayed_work disc_work;
485 struct delayed_work auto_accept_work;
486 struct delayed_work idle_work;
487 struct delayed_work le_conn_timeout;
488 struct work_struct le_scan_cleanup;
489
490 struct device dev;
491 struct dentry *debugfs;
492
493 struct hci_dev *hdev;
494 void *l2cap_data;
495 void *sco_data;
496 struct amp_mgr *amp_mgr;
497
498 struct hci_conn *link;
499
500 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
501 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
502 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
503};
504
505struct hci_chan {
506 struct list_head list;
507 __u16 handle;
508 struct hci_conn *conn;
509 struct sk_buff_head data_q;
510 unsigned int sent;
511 __u8 state;
512};
513
514struct hci_conn_params {
515 struct list_head list;
516 struct list_head action;
517
518 bdaddr_t addr;
519 u8 addr_type;
520
521 u16 conn_min_interval;
522 u16 conn_max_interval;
523 u16 conn_latency;
524 u16 supervision_timeout;
525
526 enum {
527 HCI_AUTO_CONN_DISABLED,
528 HCI_AUTO_CONN_REPORT,
529 HCI_AUTO_CONN_DIRECT,
530 HCI_AUTO_CONN_ALWAYS,
531 HCI_AUTO_CONN_LINK_LOSS,
532 HCI_AUTO_CONN_EXPLICIT,
533 } auto_connect;
534
535 struct hci_conn *conn;
536 bool explicit_connect;
537};
538
539extern struct list_head hci_dev_list;
540extern struct list_head hci_cb_list;
541extern rwlock_t hci_dev_list_lock;
542extern struct mutex hci_cb_list_lock;
543
544#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
545#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
546#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
547#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
548#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
549#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
550#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
551
552#define hci_dev_clear_volatile_flags(hdev) \
553 do { \
554 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
555 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
556 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
557 } while (0)
558
559/* ----- HCI interface to upper protocols ----- */
560int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
561int l2cap_disconn_ind(struct hci_conn *hcon);
562void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
563
564#if IS_ENABLED(CONFIG_BT_BREDR)
565int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
566void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
567#else
568static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
569 __u8 *flags)
570{
571 return 0;
572}
573
574static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
575{
576}
577#endif
578
579/* ----- Inquiry cache ----- */
580#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
581#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
582
583static inline void discovery_init(struct hci_dev *hdev)
584{
585 hdev->discovery.state = DISCOVERY_STOPPED;
586 INIT_LIST_HEAD(&hdev->discovery.all);
587 INIT_LIST_HEAD(&hdev->discovery.unknown);
588 INIT_LIST_HEAD(&hdev->discovery.resolve);
589 hdev->discovery.report_invalid_rssi = true;
590 hdev->discovery.rssi = HCI_RSSI_INVALID;
591}
592
593static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
594{
595 hdev->discovery.result_filtering = false;
596 hdev->discovery.report_invalid_rssi = true;
597 hdev->discovery.rssi = HCI_RSSI_INVALID;
598 hdev->discovery.uuid_count = 0;
599 kfree(hdev->discovery.uuids);
600 hdev->discovery.uuids = NULL;
601 hdev->discovery.scan_start = 0;
602 hdev->discovery.scan_duration = 0;
603}
604
605bool hci_discovery_active(struct hci_dev *hdev);
606
607void hci_discovery_set_state(struct hci_dev *hdev, int state);
608
609static inline int inquiry_cache_empty(struct hci_dev *hdev)
610{
611 return list_empty(&hdev->discovery.all);
612}
613
614static inline long inquiry_cache_age(struct hci_dev *hdev)
615{
616 struct discovery_state *c = &hdev->discovery;
617 return jiffies - c->timestamp;
618}
619
620static inline long inquiry_entry_age(struct inquiry_entry *e)
621{
622 return jiffies - e->timestamp;
623}
624
625struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
626 bdaddr_t *bdaddr);
627struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
628 bdaddr_t *bdaddr);
629struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
630 bdaddr_t *bdaddr,
631 int state);
632void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
633 struct inquiry_entry *ie);
634u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
635 bool name_known);
636void hci_inquiry_cache_flush(struct hci_dev *hdev);
637
638/* ----- HCI Connections ----- */
639enum {
640 HCI_CONN_AUTH_PEND,
641 HCI_CONN_REAUTH_PEND,
642 HCI_CONN_ENCRYPT_PEND,
643 HCI_CONN_RSWITCH_PEND,
644 HCI_CONN_MODE_CHANGE_PEND,
645 HCI_CONN_SCO_SETUP_PEND,
646 HCI_CONN_MGMT_CONNECTED,
647 HCI_CONN_SSP_ENABLED,
648 HCI_CONN_SC_ENABLED,
649 HCI_CONN_AES_CCM,
650 HCI_CONN_POWER_SAVE,
651 HCI_CONN_FLUSH_KEY,
652 HCI_CONN_ENCRYPT,
653 HCI_CONN_AUTH,
654 HCI_CONN_SECURE,
655 HCI_CONN_FIPS,
656 HCI_CONN_STK_ENCRYPT,
657 HCI_CONN_AUTH_INITIATOR,
658 HCI_CONN_DROP,
659 HCI_CONN_PARAM_REMOVAL_PEND,
660 HCI_CONN_NEW_LINK_KEY,
661 HCI_CONN_SCANNING,
662 HCI_CONN_AUTH_FAILURE,
663};
664
665static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
666{
667 struct hci_dev *hdev = conn->hdev;
668 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
669 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
670}
671
672static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
673{
674 struct hci_dev *hdev = conn->hdev;
675 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
676 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
677}
678
679static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
680{
681 struct hci_conn_hash *h = &hdev->conn_hash;
682 list_add_rcu(&c->list, &h->list);
683 switch (c->type) {
684 case ACL_LINK:
685 h->acl_num++;
686 break;
687 case AMP_LINK:
688 h->amp_num++;
689 break;
690 case LE_LINK:
691 h->le_num++;
692 if (c->role == HCI_ROLE_SLAVE)
693 h->le_num_slave++;
694 break;
695 case SCO_LINK:
696 case ESCO_LINK:
697 h->sco_num++;
698 break;
699 }
700}
701
702static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
703{
704 struct hci_conn_hash *h = &hdev->conn_hash;
705
706 list_del_rcu(&c->list);
707 synchronize_rcu();
708
709 switch (c->type) {
710 case ACL_LINK:
711 h->acl_num--;
712 break;
713 case AMP_LINK:
714 h->amp_num--;
715 break;
716 case LE_LINK:
717 h->le_num--;
718 if (c->role == HCI_ROLE_SLAVE)
719 h->le_num_slave--;
720 break;
721 case SCO_LINK:
722 case ESCO_LINK:
723 h->sco_num--;
724 break;
725 }
726}
727
728static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
729{
730 struct hci_conn_hash *h = &hdev->conn_hash;
731 switch (type) {
732 case ACL_LINK:
733 return h->acl_num;
734 case AMP_LINK:
735 return h->amp_num;
736 case LE_LINK:
737 return h->le_num;
738 case SCO_LINK:
739 case ESCO_LINK:
740 return h->sco_num;
741 default:
742 return 0;
743 }
744}
745
746static inline unsigned int hci_conn_count(struct hci_dev *hdev)
747{
748 struct hci_conn_hash *c = &hdev->conn_hash;
749
750 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
751}
752
753static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
754{
755 struct hci_conn_hash *h = &hdev->conn_hash;
756 struct hci_conn *c;
757 __u8 type = INVALID_LINK;
758
759 rcu_read_lock();
760
761 list_for_each_entry_rcu(c, &h->list, list) {
762 if (c->handle == handle) {
763 type = c->type;
764 break;
765 }
766 }
767
768 rcu_read_unlock();
769
770 return type;
771}
772
773static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
774 __u16 handle)
775{
776 struct hci_conn_hash *h = &hdev->conn_hash;
777 struct hci_conn *c;
778
779 rcu_read_lock();
780
781 list_for_each_entry_rcu(c, &h->list, list) {
782 if (c->handle == handle) {
783 rcu_read_unlock();
784 return c;
785 }
786 }
787 rcu_read_unlock();
788
789 return NULL;
790}
791
792static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
793 __u8 type, bdaddr_t *ba)
794{
795 struct hci_conn_hash *h = &hdev->conn_hash;
796 struct hci_conn *c;
797
798 rcu_read_lock();
799
800 list_for_each_entry_rcu(c, &h->list, list) {
801 if (c->type == type && !bacmp(&c->dst, ba)) {
802 rcu_read_unlock();
803 return c;
804 }
805 }
806
807 rcu_read_unlock();
808
809 return NULL;
810}
811
812static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
813 bdaddr_t *ba,
814 __u8 ba_type)
815{
816 struct hci_conn_hash *h = &hdev->conn_hash;
817 struct hci_conn *c;
818
819 rcu_read_lock();
820
821 list_for_each_entry_rcu(c, &h->list, list) {
822 if (c->type != LE_LINK)
823 continue;
824
825 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
826 rcu_read_unlock();
827 return c;
828 }
829 }
830
831 rcu_read_unlock();
832
833 return NULL;
834}
835
836static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
837 __u8 type, __u16 state)
838{
839 struct hci_conn_hash *h = &hdev->conn_hash;
840 struct hci_conn *c;
841
842 rcu_read_lock();
843
844 list_for_each_entry_rcu(c, &h->list, list) {
845 if (c->type == type && c->state == state) {
846 rcu_read_unlock();
847 return c;
848 }
849 }
850
851 rcu_read_unlock();
852
853 return NULL;
854}
855
856static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
857{
858 struct hci_conn_hash *h = &hdev->conn_hash;
859 struct hci_conn *c;
860
861 rcu_read_lock();
862
863 list_for_each_entry_rcu(c, &h->list, list) {
864 if (c->type == LE_LINK && c->state == BT_CONNECT &&
865 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
866 rcu_read_unlock();
867 return c;
868 }
869 }
870
871 rcu_read_unlock();
872
873 return NULL;
874}
875
876int hci_disconnect(struct hci_conn *conn, __u8 reason);
877bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
878void hci_sco_setup(struct hci_conn *conn, __u8 status);
879
880struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
881 u8 role);
882int hci_conn_del(struct hci_conn *conn);
883void hci_conn_hash_flush(struct hci_dev *hdev);
884void hci_conn_check_pending(struct hci_dev *hdev);
885
886struct hci_chan *hci_chan_create(struct hci_conn *conn);
887void hci_chan_del(struct hci_chan *chan);
888void hci_chan_list_flush(struct hci_conn *conn);
889struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
890
891struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
892 u8 dst_type, u8 sec_level,
893 u16 conn_timeout);
894struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
895 u8 dst_type, u8 sec_level, u16 conn_timeout,
896 u8 role);
897struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
898 u8 sec_level, u8 auth_type);
899struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
900 __u16 setting);
901int hci_conn_check_link_mode(struct hci_conn *conn);
902int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
903int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
904 bool initiator);
905int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
906
907void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
908
909void hci_le_conn_failed(struct hci_conn *conn, u8 status);
910
911/*
912 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
913 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
914 * working or anything else. They just guarantee that the object is available
915 * and can be dereferenced. So you can use its locks, local variables and any
916 * other constant data.
917 * Before accessing runtime data, you _must_ lock the object and then check that
918 * it is still running. As soon as you release the locks, the connection might
919 * get dropped, though.
920 *
921 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
922 * how long the underlying connection is held. So every channel that runs on the
923 * hci_conn object calls this to prevent the connection from disappearing. As
924 * long as you hold a device, you must also guarantee that you have a valid
925 * reference to the device via hci_conn_get() (or the initial reference from
926 * hci_conn_add()).
927 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
928 * break because nobody cares for that. But this means, we cannot use
929 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
930 */
931
932static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
933{
934 get_device(&conn->dev);
935 return conn;
936}
937
938static inline void hci_conn_put(struct hci_conn *conn)
939{
940 put_device(&conn->dev);
941}
942
943static inline void hci_conn_hold(struct hci_conn *conn)
944{
945 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
946
947 atomic_inc(&conn->refcnt);
948 cancel_delayed_work(&conn->disc_work);
949}
950
951static inline void hci_conn_drop(struct hci_conn *conn)
952{
953 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
954
955 if (atomic_dec_and_test(&conn->refcnt)) {
956 unsigned long timeo;
957
958 switch (conn->type) {
959 case ACL_LINK:
960 case LE_LINK:
961 cancel_delayed_work(&conn->idle_work);
962 if (conn->state == BT_CONNECTED) {
963 timeo = conn->disc_timeout;
964 if (!conn->out)
965 timeo *= 2;
966 } else {
967 timeo = 0;
968 }
969 break;
970
971 case AMP_LINK:
972 timeo = conn->disc_timeout;
973 break;
974
975 default:
976 timeo = 0;
977 break;
978 }
979
980 cancel_delayed_work(&conn->disc_work);
981 queue_delayed_work(conn->hdev->workqueue,
982 &conn->disc_work, timeo);
983 }
984}
985
986/* ----- HCI Devices ----- */
987static inline void hci_dev_put(struct hci_dev *d)
988{
989 BT_DBG("%s orig refcnt %d", d->name,
990 atomic_read(&d->dev.kobj.kref.refcount));
991
992 put_device(&d->dev);
993}
994
995static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
996{
997 BT_DBG("%s orig refcnt %d", d->name,
998 atomic_read(&d->dev.kobj.kref.refcount));
999
1000 get_device(&d->dev);
1001 return d;
1002}
1003
1004#define hci_dev_lock(d) mutex_lock(&d->lock)
1005#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1006
1007#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1008#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1009
1010static inline void *hci_get_drvdata(struct hci_dev *hdev)
1011{
1012 return dev_get_drvdata(&hdev->dev);
1013}
1014
1015static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1016{
1017 dev_set_drvdata(&hdev->dev, data);
1018}
1019
1020struct hci_dev *hci_dev_get(int index);
1021struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1022
1023struct hci_dev *hci_alloc_dev(void);
1024void hci_free_dev(struct hci_dev *hdev);
1025int hci_register_dev(struct hci_dev *hdev);
1026void hci_unregister_dev(struct hci_dev *hdev);
1027int hci_suspend_dev(struct hci_dev *hdev);
1028int hci_resume_dev(struct hci_dev *hdev);
1029int hci_reset_dev(struct hci_dev *hdev);
1030int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1031int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1032__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1033__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1034int hci_dev_open(__u16 dev);
1035int hci_dev_close(__u16 dev);
1036int hci_dev_do_close(struct hci_dev *hdev);
1037int hci_dev_reset(__u16 dev);
1038int hci_dev_reset_stat(__u16 dev);
1039int hci_dev_cmd(unsigned int cmd, void __user *arg);
1040int hci_get_dev_list(void __user *arg);
1041int hci_get_dev_info(void __user *arg);
1042int hci_get_conn_list(void __user *arg);
1043int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1044int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1045int hci_inquiry(void __user *arg);
1046
1047struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1048 bdaddr_t *bdaddr, u8 type);
1049int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1050int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1051void hci_bdaddr_list_clear(struct list_head *list);
1052
1053struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1054 bdaddr_t *addr, u8 addr_type);
1055struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1058void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1059
1060struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1061 bdaddr_t *addr,
1062 u8 addr_type);
1063
1064void hci_uuids_clear(struct hci_dev *hdev);
1065
1066void hci_link_keys_clear(struct hci_dev *hdev);
1067struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1068struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1069 bdaddr_t *bdaddr, u8 *val, u8 type,
1070 u8 pin_len, bool *persistent);
1071struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1072 u8 addr_type, u8 type, u8 authenticated,
1073 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1074struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1075 u8 addr_type, u8 role);
1076int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1077void hci_smp_ltks_clear(struct hci_dev *hdev);
1078int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1079
1080struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1081struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1082 u8 addr_type);
1083struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1085void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1086void hci_smp_irks_clear(struct hci_dev *hdev);
1087
1088bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1089
1090void hci_remote_oob_data_clear(struct hci_dev *hdev);
1091struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1092 bdaddr_t *bdaddr, u8 bdaddr_type);
1093int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1095 u8 *hash256, u8 *rand256);
1096int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 u8 bdaddr_type);
1098
1099void hci_adv_instances_clear(struct hci_dev *hdev);
1100struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1101struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1102int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1103 u16 adv_data_len, u8 *adv_data,
1104 u16 scan_rsp_len, u8 *scan_rsp_data,
1105 u16 timeout, u16 duration);
1106int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1107
1108void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1109
1110void hci_init_sysfs(struct hci_dev *hdev);
1111void hci_conn_init_sysfs(struct hci_conn *conn);
1112void hci_conn_add_sysfs(struct hci_conn *conn);
1113void hci_conn_del_sysfs(struct hci_conn *conn);
1114
1115#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1116
1117/* ----- LMP capabilities ----- */
1118#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1119#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1120#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1121#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1122#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1123#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1124#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1125#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1126#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1127#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1128#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1129#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1130#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1131#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1132#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1133#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1134#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1135#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1136#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1137
1138/* ----- Extended LMP capabilities ----- */
1139#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1140#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1141#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1142#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1143#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1144#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1145
1146/* ----- Host capabilities ----- */
1147#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1148#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1149#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1150#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1151
1152#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1153 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1154#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1155 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1156
1157/* ----- HCI protocols ----- */
1158#define HCI_PROTO_DEFER 0x01
1159
1160static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1161 __u8 type, __u8 *flags)
1162{
1163 switch (type) {
1164 case ACL_LINK:
1165 return l2cap_connect_ind(hdev, bdaddr);
1166
1167 case SCO_LINK:
1168 case ESCO_LINK:
1169 return sco_connect_ind(hdev, bdaddr, flags);
1170
1171 default:
1172 BT_ERR("unknown link type %d", type);
1173 return -EINVAL;
1174 }
1175}
1176
1177static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1178{
1179 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1180 return HCI_ERROR_REMOTE_USER_TERM;
1181
1182 return l2cap_disconn_ind(conn);
1183}
1184
1185/* ----- HCI callbacks ----- */
1186struct hci_cb {
1187 struct list_head list;
1188
1189 char *name;
1190
1191 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1192 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1193 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1194 __u8 encrypt);
1195 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1196 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1197};
1198
1199static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1200{
1201 struct hci_cb *cb;
1202
1203 mutex_lock(&hci_cb_list_lock);
1204 list_for_each_entry(cb, &hci_cb_list, list) {
1205 if (cb->connect_cfm)
1206 cb->connect_cfm(conn, status);
1207 }
1208 mutex_unlock(&hci_cb_list_lock);
1209
1210 if (conn->connect_cfm_cb)
1211 conn->connect_cfm_cb(conn, status);
1212}
1213
1214static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1215{
1216 struct hci_cb *cb;
1217
1218 mutex_lock(&hci_cb_list_lock);
1219 list_for_each_entry(cb, &hci_cb_list, list) {
1220 if (cb->disconn_cfm)
1221 cb->disconn_cfm(conn, reason);
1222 }
1223 mutex_unlock(&hci_cb_list_lock);
1224
1225 if (conn->disconn_cfm_cb)
1226 conn->disconn_cfm_cb(conn, reason);
1227}
1228
1229static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1230{
1231 struct hci_cb *cb;
1232 __u8 encrypt;
1233
1234 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1235 return;
1236
1237 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1238
1239 mutex_lock(&hci_cb_list_lock);
1240 list_for_each_entry(cb, &hci_cb_list, list) {
1241 if (cb->security_cfm)
1242 cb->security_cfm(conn, status, encrypt);
1243 }
1244 mutex_unlock(&hci_cb_list_lock);
1245
1246 if (conn->security_cfm_cb)
1247 conn->security_cfm_cb(conn, status);
1248}
1249
1250static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1251 __u8 encrypt)
1252{
1253 struct hci_cb *cb;
1254
1255 if (conn->sec_level == BT_SECURITY_SDP)
1256 conn->sec_level = BT_SECURITY_LOW;
1257
1258 if (conn->pending_sec_level > conn->sec_level)
1259 conn->sec_level = conn->pending_sec_level;
1260
1261 mutex_lock(&hci_cb_list_lock);
1262 list_for_each_entry(cb, &hci_cb_list, list) {
1263 if (cb->security_cfm)
1264 cb->security_cfm(conn, status, encrypt);
1265 }
1266 mutex_unlock(&hci_cb_list_lock);
1267
1268 if (conn->security_cfm_cb)
1269 conn->security_cfm_cb(conn, status);
1270}
1271
1272static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1273{
1274 struct hci_cb *cb;
1275
1276 mutex_lock(&hci_cb_list_lock);
1277 list_for_each_entry(cb, &hci_cb_list, list) {
1278 if (cb->key_change_cfm)
1279 cb->key_change_cfm(conn, status);
1280 }
1281 mutex_unlock(&hci_cb_list_lock);
1282}
1283
1284static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1285 __u8 role)
1286{
1287 struct hci_cb *cb;
1288
1289 mutex_lock(&hci_cb_list_lock);
1290 list_for_each_entry(cb, &hci_cb_list, list) {
1291 if (cb->role_switch_cfm)
1292 cb->role_switch_cfm(conn, status, role);
1293 }
1294 mutex_unlock(&hci_cb_list_lock);
1295}
1296
1297static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1298 size_t *data_len)
1299{
1300 size_t parsed = 0;
1301
1302 if (eir_len < 2)
1303 return NULL;
1304
1305 while (parsed < eir_len - 1) {
1306 u8 field_len = eir[0];
1307
1308 if (field_len == 0)
1309 break;
1310
1311 parsed += field_len + 1;
1312
1313 if (parsed > eir_len)
1314 break;
1315
1316 if (eir[1] != type) {
1317 eir += field_len + 1;
1318 continue;
1319 }
1320
1321 /* Zero length data */
1322 if (field_len == 1)
1323 return NULL;
1324
1325 if (data_len)
1326 *data_len = field_len - 1;
1327
1328 return &eir[2];
1329 }
1330
1331 return NULL;
1332}
1333
1334static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1335{
1336 if (addr_type != ADDR_LE_DEV_RANDOM)
1337 return false;
1338
1339 if ((bdaddr->b[5] & 0xc0) == 0x40)
1340 return true;
1341
1342 return false;
1343}
1344
1345static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1346{
1347 if (addr_type == ADDR_LE_DEV_PUBLIC)
1348 return true;
1349
1350 /* Check for Random Static address type */
1351 if ((addr->b[5] & 0xc0) == 0xc0)
1352 return true;
1353
1354 return false;
1355}
1356
1357static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1358 bdaddr_t *bdaddr, u8 addr_type)
1359{
1360 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1361 return NULL;
1362
1363 return hci_find_irk_by_rpa(hdev, bdaddr);
1364}
1365
1366static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1367 u16 to_multiplier)
1368{
1369 u16 max_latency;
1370
1371 if (min > max || min < 6 || max > 3200)
1372 return -EINVAL;
1373
1374 if (to_multiplier < 10 || to_multiplier > 3200)
1375 return -EINVAL;
1376
1377 if (max >= to_multiplier * 8)
1378 return -EINVAL;
1379
1380 max_latency = (to_multiplier * 4 / max) - 1;
1381 if (latency > 499 || latency > max_latency)
1382 return -EINVAL;
1383
1384 return 0;
1385}
1386
1387int hci_register_cb(struct hci_cb *hcb);
1388int hci_unregister_cb(struct hci_cb *hcb);
1389
1390struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1391 const void *param, u32 timeout);
1392struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u8 event, u32 timeout);
1394
1395int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1396 const void *param);
1397void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1398void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1399
1400void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1401
1402struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1403 const void *param, u32 timeout);
1404
1405/* ----- HCI Sockets ----- */
1406void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1407void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1408 int flag, struct sock *skip_sk);
1409void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1410void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1411 void *data, u16 data_len, ktime_t tstamp,
1412 int flag, struct sock *skip_sk);
1413
1414void hci_sock_dev_event(struct hci_dev *hdev, int event);
1415
1416#define HCI_MGMT_VAR_LEN BIT(0)
1417#define HCI_MGMT_NO_HDEV BIT(1)
1418#define HCI_MGMT_UNTRUSTED BIT(2)
1419#define HCI_MGMT_UNCONFIGURED BIT(3)
1420
1421struct hci_mgmt_handler {
1422 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1423 u16 data_len);
1424 size_t data_len;
1425 unsigned long flags;
1426};
1427
1428struct hci_mgmt_chan {
1429 struct list_head list;
1430 unsigned short channel;
1431 size_t handler_count;
1432 const struct hci_mgmt_handler *handlers;
1433 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1434};
1435
1436int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1437void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1438
1439/* Management interface */
1440#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1441#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1442 BIT(BDADDR_LE_RANDOM))
1443#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1444 BIT(BDADDR_LE_PUBLIC) | \
1445 BIT(BDADDR_LE_RANDOM))
1446
1447/* These LE scan and inquiry parameters were chosen according to LE General
1448 * Discovery Procedure specification.
1449 */
1450#define DISCOV_LE_SCAN_WIN 0x12
1451#define DISCOV_LE_SCAN_INT 0x12
1452#define DISCOV_LE_TIMEOUT 10240 /* msec */
1453#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1454#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1455#define DISCOV_BREDR_INQUIRY_LEN 0x08
1456#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1457
1458void mgmt_fill_version_info(void *ver);
1459int mgmt_new_settings(struct hci_dev *hdev);
1460void mgmt_index_added(struct hci_dev *hdev);
1461void mgmt_index_removed(struct hci_dev *hdev);
1462void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1463void mgmt_power_on(struct hci_dev *hdev, int err);
1464void __mgmt_power_off(struct hci_dev *hdev);
1465void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1466 bool persistent);
1467void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1468 u32 flags, u8 *name, u8 name_len);
1469void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1470 u8 link_type, u8 addr_type, u8 reason,
1471 bool mgmt_connected);
1472void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1473 u8 link_type, u8 addr_type, u8 status);
1474void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1475 u8 addr_type, u8 status);
1476void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1477void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1478 u8 status);
1479void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 status);
1481int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 link_type, u8 addr_type, u32 value,
1483 u8 confirm_hint);
1484int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1485 u8 link_type, u8 addr_type, u8 status);
1486int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type);
1490int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type, u8 status);
1492int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u32 passkey,
1496 u8 entered);
1497void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1498void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1499void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1500void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1501 u8 status);
1502void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1503void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1504void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1505void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1508void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1509 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1510void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1511bool mgmt_powering_down(struct hci_dev *hdev);
1512void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1513void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1514void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1515 bool persistent);
1516void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1517 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1518 u16 max_interval, u16 latency, u16 timeout);
1519void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1520bool mgmt_get_connectable(struct hci_dev *hdev);
1521void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1522void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1523u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1524void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1525 u8 instance);
1526void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1527 u8 instance);
1528
1529u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1530 u16 to_multiplier);
1531void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1532 __u8 ltk[16], __u8 key_size);
1533
1534void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 *bdaddr_type);
1536
1537#define SCO_AIRMODE_MASK 0x0003
1538#define SCO_AIRMODE_CVSD 0x0000
1539#define SCO_AIRMODE_TRANSP 0x0003
1540
1541#endif /* __HCI_CORE_H */