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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/leds.h>
29#include <linux/rculist.h>
30
31#include <net/bluetooth/hci.h>
32#include <net/bluetooth/hci_sock.h>
33
34/* HCI priority */
35#define HCI_PRIO_MAX 7
36
37/* HCI Core structures */
38struct inquiry_data {
39 bdaddr_t bdaddr;
40 __u8 pscan_rep_mode;
41 __u8 pscan_period_mode;
42 __u8 pscan_mode;
43 __u8 dev_class[3];
44 __le16 clock_offset;
45 __s8 rssi;
46 __u8 ssp_mode;
47};
48
49struct inquiry_entry {
50 struct list_head all; /* inq_cache.all */
51 struct list_head list; /* unknown or resolve */
52 enum {
53 NAME_NOT_KNOWN,
54 NAME_NEEDED,
55 NAME_PENDING,
56 NAME_KNOWN,
57 } name_state;
58 __u32 timestamp;
59 struct inquiry_data data;
60};
61
62struct discovery_state {
63 int type;
64 enum {
65 DISCOVERY_STOPPED,
66 DISCOVERY_STARTING,
67 DISCOVERY_FINDING,
68 DISCOVERY_RESOLVING,
69 DISCOVERY_STOPPING,
70 } state;
71 struct list_head all; /* All devices found during inquiry */
72 struct list_head unknown; /* Name state not known */
73 struct list_head resolve; /* Name needs to be resolved */
74 __u32 timestamp;
75 bdaddr_t last_adv_addr;
76 u8 last_adv_addr_type;
77 s8 last_adv_rssi;
78 u32 last_adv_flags;
79 u8 last_adv_data[HCI_MAX_AD_LENGTH];
80 u8 last_adv_data_len;
81 bool report_invalid_rssi;
82 bool result_filtering;
83 bool limited;
84 s8 rssi;
85 u16 uuid_count;
86 u8 (*uuids)[16];
87 unsigned long scan_start;
88 unsigned long scan_duration;
89};
90
91struct hci_conn_hash {
92 struct list_head list;
93 unsigned int acl_num;
94 unsigned int amp_num;
95 unsigned int sco_num;
96 unsigned int le_num;
97 unsigned int le_num_slave;
98};
99
100struct bdaddr_list {
101 struct list_head list;
102 bdaddr_t bdaddr;
103 u8 bdaddr_type;
104};
105
106struct bdaddr_list_with_irk {
107 struct list_head list;
108 bdaddr_t bdaddr;
109 u8 bdaddr_type;
110 u8 peer_irk[16];
111 u8 local_irk[16];
112};
113
114struct bt_uuid {
115 struct list_head list;
116 u8 uuid[16];
117 u8 size;
118 u8 svc_hint;
119};
120
121struct smp_csrk {
122 bdaddr_t bdaddr;
123 u8 bdaddr_type;
124 u8 type;
125 u8 val[16];
126};
127
128struct smp_ltk {
129 struct list_head list;
130 struct rcu_head rcu;
131 bdaddr_t bdaddr;
132 u8 bdaddr_type;
133 u8 authenticated;
134 u8 type;
135 u8 enc_size;
136 __le16 ediv;
137 __le64 rand;
138 u8 val[16];
139};
140
141struct smp_irk {
142 struct list_head list;
143 struct rcu_head rcu;
144 bdaddr_t rpa;
145 bdaddr_t bdaddr;
146 u8 addr_type;
147 u8 val[16];
148};
149
150struct link_key {
151 struct list_head list;
152 struct rcu_head rcu;
153 bdaddr_t bdaddr;
154 u8 type;
155 u8 val[HCI_LINK_KEY_SIZE];
156 u8 pin_len;
157};
158
159struct oob_data {
160 struct list_head list;
161 bdaddr_t bdaddr;
162 u8 bdaddr_type;
163 u8 present;
164 u8 hash192[16];
165 u8 rand192[16];
166 u8 hash256[16];
167 u8 rand256[16];
168};
169
170struct adv_info {
171 struct list_head list;
172 bool pending;
173 __u8 instance;
174 __u32 flags;
175 __u16 timeout;
176 __u16 remaining_time;
177 __u16 duration;
178 __u16 adv_data_len;
179 __u8 adv_data[HCI_MAX_AD_LENGTH];
180 __u16 scan_rsp_len;
181 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
182 __s8 tx_power;
183 bdaddr_t random_addr;
184 bool rpa_expired;
185 struct delayed_work rpa_expired_cb;
186};
187
188#define HCI_MAX_ADV_INSTANCES 5
189#define HCI_DEFAULT_ADV_DURATION 2
190
191#define HCI_MAX_SHORT_NAME_LENGTH 10
192
193/* Min encryption key size to match with SMP */
194#define HCI_MIN_ENC_KEY_SIZE 7
195
196/* Default LE RPA expiry time, 15 minutes */
197#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
198
199/* Default min/max age of connection information (1s/3s) */
200#define DEFAULT_CONN_INFO_MIN_AGE 1000
201#define DEFAULT_CONN_INFO_MAX_AGE 3000
202/* Default authenticated payload timeout 30s */
203#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
204
205struct amp_assoc {
206 __u16 len;
207 __u16 offset;
208 __u16 rem_len;
209 __u16 len_so_far;
210 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
211};
212
213#define HCI_MAX_PAGES 3
214
215struct hci_dev {
216 struct list_head list;
217 struct mutex lock;
218
219 char name[8];
220 unsigned long flags;
221 __u16 id;
222 __u8 bus;
223 __u8 dev_type;
224 bdaddr_t bdaddr;
225 bdaddr_t setup_addr;
226 bdaddr_t public_addr;
227 bdaddr_t random_addr;
228 bdaddr_t static_addr;
229 __u8 adv_addr_type;
230 __u8 dev_name[HCI_MAX_NAME_LENGTH];
231 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
232 __u8 eir[HCI_MAX_EIR_LENGTH];
233 __u16 appearance;
234 __u8 dev_class[3];
235 __u8 major_class;
236 __u8 minor_class;
237 __u8 max_page;
238 __u8 features[HCI_MAX_PAGES][8];
239 __u8 le_features[8];
240 __u8 le_white_list_size;
241 __u8 le_resolv_list_size;
242 __u8 le_num_of_adv_sets;
243 __u8 le_states[8];
244 __u8 commands[64];
245 __u8 hci_ver;
246 __u16 hci_rev;
247 __u8 lmp_ver;
248 __u16 manufacturer;
249 __u16 lmp_subver;
250 __u16 voice_setting;
251 __u8 num_iac;
252 __u8 stored_max_keys;
253 __u8 stored_num_keys;
254 __u8 io_capability;
255 __s8 inq_tx_power;
256 __u16 page_scan_interval;
257 __u16 page_scan_window;
258 __u8 page_scan_type;
259 __u8 le_adv_channel_map;
260 __u16 le_adv_min_interval;
261 __u16 le_adv_max_interval;
262 __u8 le_scan_type;
263 __u16 le_scan_interval;
264 __u16 le_scan_window;
265 __u16 le_conn_min_interval;
266 __u16 le_conn_max_interval;
267 __u16 le_conn_latency;
268 __u16 le_supv_timeout;
269 __u16 le_def_tx_len;
270 __u16 le_def_tx_time;
271 __u16 le_max_tx_len;
272 __u16 le_max_tx_time;
273 __u16 le_max_rx_len;
274 __u16 le_max_rx_time;
275 __u8 le_max_key_size;
276 __u8 le_min_key_size;
277 __u16 discov_interleaved_timeout;
278 __u16 conn_info_min_age;
279 __u16 conn_info_max_age;
280 __u16 auth_payload_timeout;
281 __u8 min_enc_key_size;
282 __u8 ssp_debug_mode;
283 __u8 hw_error_code;
284 __u32 clock;
285
286 __u16 devid_source;
287 __u16 devid_vendor;
288 __u16 devid_product;
289 __u16 devid_version;
290
291 __u16 pkt_type;
292 __u16 esco_type;
293 __u16 link_policy;
294 __u16 link_mode;
295
296 __u32 idle_timeout;
297 __u16 sniff_min_interval;
298 __u16 sniff_max_interval;
299
300 __u8 amp_status;
301 __u32 amp_total_bw;
302 __u32 amp_max_bw;
303 __u32 amp_min_latency;
304 __u32 amp_max_pdu;
305 __u8 amp_type;
306 __u16 amp_pal_cap;
307 __u16 amp_assoc_size;
308 __u32 amp_max_flush_to;
309 __u32 amp_be_flush_to;
310
311 struct amp_assoc loc_assoc;
312
313 __u8 flow_ctl_mode;
314
315 unsigned int auto_accept_delay;
316
317 unsigned long quirks;
318
319 atomic_t cmd_cnt;
320 unsigned int acl_cnt;
321 unsigned int sco_cnt;
322 unsigned int le_cnt;
323
324 unsigned int acl_mtu;
325 unsigned int sco_mtu;
326 unsigned int le_mtu;
327 unsigned int acl_pkts;
328 unsigned int sco_pkts;
329 unsigned int le_pkts;
330
331 __u16 block_len;
332 __u16 block_mtu;
333 __u16 num_blocks;
334 __u16 block_cnt;
335
336 unsigned long acl_last_tx;
337 unsigned long sco_last_tx;
338 unsigned long le_last_tx;
339
340 __u8 le_tx_def_phys;
341 __u8 le_rx_def_phys;
342
343 struct workqueue_struct *workqueue;
344 struct workqueue_struct *req_workqueue;
345
346 struct work_struct power_on;
347 struct delayed_work power_off;
348 struct work_struct error_reset;
349
350 __u16 discov_timeout;
351 struct delayed_work discov_off;
352
353 struct delayed_work service_cache;
354
355 struct delayed_work cmd_timer;
356
357 struct work_struct rx_work;
358 struct work_struct cmd_work;
359 struct work_struct tx_work;
360
361 struct work_struct discov_update;
362 struct work_struct bg_scan_update;
363 struct work_struct scan_update;
364 struct work_struct connectable_update;
365 struct work_struct discoverable_update;
366 struct delayed_work le_scan_disable;
367 struct delayed_work le_scan_restart;
368
369 struct sk_buff_head rx_q;
370 struct sk_buff_head raw_q;
371 struct sk_buff_head cmd_q;
372
373 struct sk_buff *sent_cmd;
374
375 struct mutex req_lock;
376 wait_queue_head_t req_wait_q;
377 __u32 req_status;
378 __u32 req_result;
379 struct sk_buff *req_skb;
380
381 void *smp_data;
382 void *smp_bredr_data;
383
384 struct discovery_state discovery;
385 struct hci_conn_hash conn_hash;
386
387 struct list_head mgmt_pending;
388 struct list_head blacklist;
389 struct list_head whitelist;
390 struct list_head uuids;
391 struct list_head link_keys;
392 struct list_head long_term_keys;
393 struct list_head identity_resolving_keys;
394 struct list_head remote_oob_data;
395 struct list_head le_white_list;
396 struct list_head le_resolv_list;
397 struct list_head le_conn_params;
398 struct list_head pend_le_conns;
399 struct list_head pend_le_reports;
400
401 struct hci_dev_stats stat;
402
403 atomic_t promisc;
404
405 const char *hw_info;
406 const char *fw_info;
407 struct dentry *debugfs;
408
409 struct device dev;
410
411 struct rfkill *rfkill;
412
413 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
414
415 __s8 adv_tx_power;
416 __u8 adv_data[HCI_MAX_AD_LENGTH];
417 __u8 adv_data_len;
418 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
419 __u8 scan_rsp_data_len;
420
421 struct list_head adv_instances;
422 unsigned int adv_instance_cnt;
423 __u8 cur_adv_instance;
424 __u16 adv_instance_timeout;
425 struct delayed_work adv_instance_expire;
426
427 __u8 irk[16];
428 __u32 rpa_timeout;
429 struct delayed_work rpa_expired;
430 bdaddr_t rpa;
431
432#if IS_ENABLED(CONFIG_BT_LEDS)
433 struct led_trigger *power_led;
434#endif
435
436 int (*open)(struct hci_dev *hdev);
437 int (*close)(struct hci_dev *hdev);
438 int (*flush)(struct hci_dev *hdev);
439 int (*setup)(struct hci_dev *hdev);
440 int (*shutdown)(struct hci_dev *hdev);
441 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
442 void (*notify)(struct hci_dev *hdev, unsigned int evt);
443 void (*hw_error)(struct hci_dev *hdev, u8 code);
444 int (*post_init)(struct hci_dev *hdev);
445 int (*set_diag)(struct hci_dev *hdev, bool enable);
446 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
447 void (*cmd_timeout)(struct hci_dev *hdev);
448};
449
450#define HCI_PHY_HANDLE(handle) (handle & 0xff)
451
452struct hci_conn {
453 struct list_head list;
454
455 atomic_t refcnt;
456
457 bdaddr_t dst;
458 __u8 dst_type;
459 bdaddr_t src;
460 __u8 src_type;
461 bdaddr_t init_addr;
462 __u8 init_addr_type;
463 bdaddr_t resp_addr;
464 __u8 resp_addr_type;
465 __u16 handle;
466 __u16 state;
467 __u8 mode;
468 __u8 type;
469 __u8 role;
470 bool out;
471 __u8 attempt;
472 __u8 dev_class[3];
473 __u8 features[HCI_MAX_PAGES][8];
474 __u16 pkt_type;
475 __u16 link_policy;
476 __u8 key_type;
477 __u8 auth_type;
478 __u8 sec_level;
479 __u8 pending_sec_level;
480 __u8 pin_length;
481 __u8 enc_key_size;
482 __u8 io_capability;
483 __u32 passkey_notify;
484 __u8 passkey_entered;
485 __u16 disc_timeout;
486 __u16 conn_timeout;
487 __u16 setting;
488 __u16 auth_payload_timeout;
489 __u16 le_conn_min_interval;
490 __u16 le_conn_max_interval;
491 __u16 le_conn_interval;
492 __u16 le_conn_latency;
493 __u16 le_supv_timeout;
494 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
495 __u8 le_adv_data_len;
496 __s8 rssi;
497 __s8 tx_power;
498 __s8 max_tx_power;
499 unsigned long flags;
500
501 __u32 clock;
502 __u16 clock_accuracy;
503
504 unsigned long conn_info_timestamp;
505
506 __u8 remote_cap;
507 __u8 remote_auth;
508 __u8 remote_id;
509
510 unsigned int sent;
511
512 struct sk_buff_head data_q;
513 struct list_head chan_list;
514
515 struct delayed_work disc_work;
516 struct delayed_work auto_accept_work;
517 struct delayed_work idle_work;
518 struct delayed_work le_conn_timeout;
519 struct work_struct le_scan_cleanup;
520
521 struct device dev;
522 struct dentry *debugfs;
523
524 struct hci_dev *hdev;
525 void *l2cap_data;
526 void *sco_data;
527 struct amp_mgr *amp_mgr;
528
529 struct hci_conn *link;
530
531 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
532 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
533 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
534};
535
536struct hci_chan {
537 struct list_head list;
538 __u16 handle;
539 struct hci_conn *conn;
540 struct sk_buff_head data_q;
541 unsigned int sent;
542 __u8 state;
543};
544
545struct hci_conn_params {
546 struct list_head list;
547 struct list_head action;
548
549 bdaddr_t addr;
550 u8 addr_type;
551
552 u16 conn_min_interval;
553 u16 conn_max_interval;
554 u16 conn_latency;
555 u16 supervision_timeout;
556
557 enum {
558 HCI_AUTO_CONN_DISABLED,
559 HCI_AUTO_CONN_REPORT,
560 HCI_AUTO_CONN_DIRECT,
561 HCI_AUTO_CONN_ALWAYS,
562 HCI_AUTO_CONN_LINK_LOSS,
563 HCI_AUTO_CONN_EXPLICIT,
564 } auto_connect;
565
566 struct hci_conn *conn;
567 bool explicit_connect;
568};
569
570extern struct list_head hci_dev_list;
571extern struct list_head hci_cb_list;
572extern rwlock_t hci_dev_list_lock;
573extern struct mutex hci_cb_list_lock;
574
575#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
576#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
577#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
578#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
579#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
580#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
581#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
582
583#define hci_dev_clear_volatile_flags(hdev) \
584 do { \
585 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
586 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
587 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
588 } while (0)
589
590/* ----- HCI interface to upper protocols ----- */
591int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
592int l2cap_disconn_ind(struct hci_conn *hcon);
593void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
594
595#if IS_ENABLED(CONFIG_BT_BREDR)
596int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
597void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
598#else
599static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
600 __u8 *flags)
601{
602 return 0;
603}
604
605static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
606{
607}
608#endif
609
610/* ----- Inquiry cache ----- */
611#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
612#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
613
614static inline void discovery_init(struct hci_dev *hdev)
615{
616 hdev->discovery.state = DISCOVERY_STOPPED;
617 INIT_LIST_HEAD(&hdev->discovery.all);
618 INIT_LIST_HEAD(&hdev->discovery.unknown);
619 INIT_LIST_HEAD(&hdev->discovery.resolve);
620 hdev->discovery.report_invalid_rssi = true;
621 hdev->discovery.rssi = HCI_RSSI_INVALID;
622}
623
624static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
625{
626 hdev->discovery.result_filtering = false;
627 hdev->discovery.report_invalid_rssi = true;
628 hdev->discovery.rssi = HCI_RSSI_INVALID;
629 hdev->discovery.uuid_count = 0;
630 kfree(hdev->discovery.uuids);
631 hdev->discovery.uuids = NULL;
632 hdev->discovery.scan_start = 0;
633 hdev->discovery.scan_duration = 0;
634}
635
636bool hci_discovery_active(struct hci_dev *hdev);
637
638void hci_discovery_set_state(struct hci_dev *hdev, int state);
639
640static inline int inquiry_cache_empty(struct hci_dev *hdev)
641{
642 return list_empty(&hdev->discovery.all);
643}
644
645static inline long inquiry_cache_age(struct hci_dev *hdev)
646{
647 struct discovery_state *c = &hdev->discovery;
648 return jiffies - c->timestamp;
649}
650
651static inline long inquiry_entry_age(struct inquiry_entry *e)
652{
653 return jiffies - e->timestamp;
654}
655
656struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
657 bdaddr_t *bdaddr);
658struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
659 bdaddr_t *bdaddr);
660struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
661 bdaddr_t *bdaddr,
662 int state);
663void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
664 struct inquiry_entry *ie);
665u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
666 bool name_known);
667void hci_inquiry_cache_flush(struct hci_dev *hdev);
668
669/* ----- HCI Connections ----- */
670enum {
671 HCI_CONN_AUTH_PEND,
672 HCI_CONN_REAUTH_PEND,
673 HCI_CONN_ENCRYPT_PEND,
674 HCI_CONN_RSWITCH_PEND,
675 HCI_CONN_MODE_CHANGE_PEND,
676 HCI_CONN_SCO_SETUP_PEND,
677 HCI_CONN_MGMT_CONNECTED,
678 HCI_CONN_SSP_ENABLED,
679 HCI_CONN_SC_ENABLED,
680 HCI_CONN_AES_CCM,
681 HCI_CONN_POWER_SAVE,
682 HCI_CONN_FLUSH_KEY,
683 HCI_CONN_ENCRYPT,
684 HCI_CONN_AUTH,
685 HCI_CONN_SECURE,
686 HCI_CONN_FIPS,
687 HCI_CONN_STK_ENCRYPT,
688 HCI_CONN_AUTH_INITIATOR,
689 HCI_CONN_DROP,
690 HCI_CONN_PARAM_REMOVAL_PEND,
691 HCI_CONN_NEW_LINK_KEY,
692 HCI_CONN_SCANNING,
693 HCI_CONN_AUTH_FAILURE,
694};
695
696static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
697{
698 struct hci_dev *hdev = conn->hdev;
699 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
700 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
701}
702
703static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
704{
705 struct hci_dev *hdev = conn->hdev;
706 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
707 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
708}
709
710static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
711{
712 struct hci_conn_hash *h = &hdev->conn_hash;
713 list_add_rcu(&c->list, &h->list);
714 switch (c->type) {
715 case ACL_LINK:
716 h->acl_num++;
717 break;
718 case AMP_LINK:
719 h->amp_num++;
720 break;
721 case LE_LINK:
722 h->le_num++;
723 if (c->role == HCI_ROLE_SLAVE)
724 h->le_num_slave++;
725 break;
726 case SCO_LINK:
727 case ESCO_LINK:
728 h->sco_num++;
729 break;
730 }
731}
732
733static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
734{
735 struct hci_conn_hash *h = &hdev->conn_hash;
736
737 list_del_rcu(&c->list);
738 synchronize_rcu();
739
740 switch (c->type) {
741 case ACL_LINK:
742 h->acl_num--;
743 break;
744 case AMP_LINK:
745 h->amp_num--;
746 break;
747 case LE_LINK:
748 h->le_num--;
749 if (c->role == HCI_ROLE_SLAVE)
750 h->le_num_slave--;
751 break;
752 case SCO_LINK:
753 case ESCO_LINK:
754 h->sco_num--;
755 break;
756 }
757}
758
759static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
760{
761 struct hci_conn_hash *h = &hdev->conn_hash;
762 switch (type) {
763 case ACL_LINK:
764 return h->acl_num;
765 case AMP_LINK:
766 return h->amp_num;
767 case LE_LINK:
768 return h->le_num;
769 case SCO_LINK:
770 case ESCO_LINK:
771 return h->sco_num;
772 default:
773 return 0;
774 }
775}
776
777static inline unsigned int hci_conn_count(struct hci_dev *hdev)
778{
779 struct hci_conn_hash *c = &hdev->conn_hash;
780
781 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
782}
783
784static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
785{
786 struct hci_conn_hash *h = &hdev->conn_hash;
787 struct hci_conn *c;
788 __u8 type = INVALID_LINK;
789
790 rcu_read_lock();
791
792 list_for_each_entry_rcu(c, &h->list, list) {
793 if (c->handle == handle) {
794 type = c->type;
795 break;
796 }
797 }
798
799 rcu_read_unlock();
800
801 return type;
802}
803
804static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
805 __u16 handle)
806{
807 struct hci_conn_hash *h = &hdev->conn_hash;
808 struct hci_conn *c;
809
810 rcu_read_lock();
811
812 list_for_each_entry_rcu(c, &h->list, list) {
813 if (c->handle == handle) {
814 rcu_read_unlock();
815 return c;
816 }
817 }
818 rcu_read_unlock();
819
820 return NULL;
821}
822
823static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
824 __u8 type, bdaddr_t *ba)
825{
826 struct hci_conn_hash *h = &hdev->conn_hash;
827 struct hci_conn *c;
828
829 rcu_read_lock();
830
831 list_for_each_entry_rcu(c, &h->list, list) {
832 if (c->type == type && !bacmp(&c->dst, ba)) {
833 rcu_read_unlock();
834 return c;
835 }
836 }
837
838 rcu_read_unlock();
839
840 return NULL;
841}
842
843static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
844 bdaddr_t *ba,
845 __u8 ba_type)
846{
847 struct hci_conn_hash *h = &hdev->conn_hash;
848 struct hci_conn *c;
849
850 rcu_read_lock();
851
852 list_for_each_entry_rcu(c, &h->list, list) {
853 if (c->type != LE_LINK)
854 continue;
855
856 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
857 rcu_read_unlock();
858 return c;
859 }
860 }
861
862 rcu_read_unlock();
863
864 return NULL;
865}
866
867static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
868 __u8 type, __u16 state)
869{
870 struct hci_conn_hash *h = &hdev->conn_hash;
871 struct hci_conn *c;
872
873 rcu_read_lock();
874
875 list_for_each_entry_rcu(c, &h->list, list) {
876 if (c->type == type && c->state == state) {
877 rcu_read_unlock();
878 return c;
879 }
880 }
881
882 rcu_read_unlock();
883
884 return NULL;
885}
886
887static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
888{
889 struct hci_conn_hash *h = &hdev->conn_hash;
890 struct hci_conn *c;
891
892 rcu_read_lock();
893
894 list_for_each_entry_rcu(c, &h->list, list) {
895 if (c->type == LE_LINK && c->state == BT_CONNECT &&
896 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
897 rcu_read_unlock();
898 return c;
899 }
900 }
901
902 rcu_read_unlock();
903
904 return NULL;
905}
906
907int hci_disconnect(struct hci_conn *conn, __u8 reason);
908bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
909void hci_sco_setup(struct hci_conn *conn, __u8 status);
910
911struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
912 u8 role);
913int hci_conn_del(struct hci_conn *conn);
914void hci_conn_hash_flush(struct hci_dev *hdev);
915void hci_conn_check_pending(struct hci_dev *hdev);
916
917struct hci_chan *hci_chan_create(struct hci_conn *conn);
918void hci_chan_del(struct hci_chan *chan);
919void hci_chan_list_flush(struct hci_conn *conn);
920struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
921
922struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
923 u8 dst_type, u8 sec_level,
924 u16 conn_timeout);
925struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
926 u8 dst_type, u8 sec_level, u16 conn_timeout,
927 u8 role, bdaddr_t *direct_rpa);
928struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
929 u8 sec_level, u8 auth_type);
930struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
931 __u16 setting);
932int hci_conn_check_link_mode(struct hci_conn *conn);
933int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
934int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
935 bool initiator);
936int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
937
938void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
939
940void hci_le_conn_failed(struct hci_conn *conn, u8 status);
941
942/*
943 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
944 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
945 * working or anything else. They just guarantee that the object is available
946 * and can be dereferenced. So you can use its locks, local variables and any
947 * other constant data.
948 * Before accessing runtime data, you _must_ lock the object and then check that
949 * it is still running. As soon as you release the locks, the connection might
950 * get dropped, though.
951 *
952 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
953 * how long the underlying connection is held. So every channel that runs on the
954 * hci_conn object calls this to prevent the connection from disappearing. As
955 * long as you hold a device, you must also guarantee that you have a valid
956 * reference to the device via hci_conn_get() (or the initial reference from
957 * hci_conn_add()).
958 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
959 * break because nobody cares for that. But this means, we cannot use
960 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
961 */
962
963static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
964{
965 get_device(&conn->dev);
966 return conn;
967}
968
969static inline void hci_conn_put(struct hci_conn *conn)
970{
971 put_device(&conn->dev);
972}
973
974static inline void hci_conn_hold(struct hci_conn *conn)
975{
976 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
977
978 atomic_inc(&conn->refcnt);
979 cancel_delayed_work(&conn->disc_work);
980}
981
982static inline void hci_conn_drop(struct hci_conn *conn)
983{
984 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
985
986 if (atomic_dec_and_test(&conn->refcnt)) {
987 unsigned long timeo;
988
989 switch (conn->type) {
990 case ACL_LINK:
991 case LE_LINK:
992 cancel_delayed_work(&conn->idle_work);
993 if (conn->state == BT_CONNECTED) {
994 timeo = conn->disc_timeout;
995 if (!conn->out)
996 timeo *= 2;
997 } else {
998 timeo = 0;
999 }
1000 break;
1001
1002 case AMP_LINK:
1003 timeo = conn->disc_timeout;
1004 break;
1005
1006 default:
1007 timeo = 0;
1008 break;
1009 }
1010
1011 cancel_delayed_work(&conn->disc_work);
1012 queue_delayed_work(conn->hdev->workqueue,
1013 &conn->disc_work, timeo);
1014 }
1015}
1016
1017/* ----- HCI Devices ----- */
1018static inline void hci_dev_put(struct hci_dev *d)
1019{
1020 BT_DBG("%s orig refcnt %d", d->name,
1021 kref_read(&d->dev.kobj.kref));
1022
1023 put_device(&d->dev);
1024}
1025
1026static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1027{
1028 BT_DBG("%s orig refcnt %d", d->name,
1029 kref_read(&d->dev.kobj.kref));
1030
1031 get_device(&d->dev);
1032 return d;
1033}
1034
1035#define hci_dev_lock(d) mutex_lock(&d->lock)
1036#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1037
1038#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1039#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1040
1041static inline void *hci_get_drvdata(struct hci_dev *hdev)
1042{
1043 return dev_get_drvdata(&hdev->dev);
1044}
1045
1046static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1047{
1048 dev_set_drvdata(&hdev->dev, data);
1049}
1050
1051struct hci_dev *hci_dev_get(int index);
1052struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1053
1054struct hci_dev *hci_alloc_dev(void);
1055void hci_free_dev(struct hci_dev *hdev);
1056int hci_register_dev(struct hci_dev *hdev);
1057void hci_unregister_dev(struct hci_dev *hdev);
1058int hci_suspend_dev(struct hci_dev *hdev);
1059int hci_resume_dev(struct hci_dev *hdev);
1060int hci_reset_dev(struct hci_dev *hdev);
1061int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1062int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1063__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1064__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1065int hci_dev_open(__u16 dev);
1066int hci_dev_close(__u16 dev);
1067int hci_dev_do_close(struct hci_dev *hdev);
1068int hci_dev_reset(__u16 dev);
1069int hci_dev_reset_stat(__u16 dev);
1070int hci_dev_cmd(unsigned int cmd, void __user *arg);
1071int hci_get_dev_list(void __user *arg);
1072int hci_get_dev_info(void __user *arg);
1073int hci_get_conn_list(void __user *arg);
1074int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1075int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1076int hci_inquiry(void __user *arg);
1077
1078struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1079 bdaddr_t *bdaddr, u8 type);
1080struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1081 struct list_head *list, bdaddr_t *bdaddr,
1082 u8 type);
1083int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1084int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1085 u8 type, u8 *peer_irk, u8 *local_irk);
1086int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1087int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1088 u8 type);
1089void hci_bdaddr_list_clear(struct list_head *list);
1090
1091struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1092 bdaddr_t *addr, u8 addr_type);
1093struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1094 bdaddr_t *addr, u8 addr_type);
1095void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1096void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1097
1098struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1099 bdaddr_t *addr,
1100 u8 addr_type);
1101
1102void hci_uuids_clear(struct hci_dev *hdev);
1103
1104void hci_link_keys_clear(struct hci_dev *hdev);
1105struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1106struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1107 bdaddr_t *bdaddr, u8 *val, u8 type,
1108 u8 pin_len, bool *persistent);
1109struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1110 u8 addr_type, u8 type, u8 authenticated,
1111 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1112struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1113 u8 addr_type, u8 role);
1114int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1115void hci_smp_ltks_clear(struct hci_dev *hdev);
1116int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1117
1118struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1119struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120 u8 addr_type);
1121struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1122 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1123void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1124void hci_smp_irks_clear(struct hci_dev *hdev);
1125
1126bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1127
1128void hci_remote_oob_data_clear(struct hci_dev *hdev);
1129struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1130 bdaddr_t *bdaddr, u8 bdaddr_type);
1131int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1132 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1133 u8 *hash256, u8 *rand256);
1134int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1135 u8 bdaddr_type);
1136
1137void hci_adv_instances_clear(struct hci_dev *hdev);
1138struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1139struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1140int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1141 u16 adv_data_len, u8 *adv_data,
1142 u16 scan_rsp_len, u8 *scan_rsp_data,
1143 u16 timeout, u16 duration);
1144int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1145void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1146
1147void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1148
1149void hci_init_sysfs(struct hci_dev *hdev);
1150void hci_conn_init_sysfs(struct hci_conn *conn);
1151void hci_conn_add_sysfs(struct hci_conn *conn);
1152void hci_conn_del_sysfs(struct hci_conn *conn);
1153
1154#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1155
1156/* ----- LMP capabilities ----- */
1157#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1158#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1159#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1160#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1161#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1162#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1163#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1164#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1165#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1166#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1167#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1168#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1169#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1170#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1171#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1172#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1173#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1174#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1175#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1176#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1177#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1178#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1179#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1180
1181/* ----- Extended LMP capabilities ----- */
1182#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1183#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1184#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1185#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1186#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1187#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1188
1189/* ----- Host capabilities ----- */
1190#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1191#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1192#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1193#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1194
1195#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1196 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1197#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1198 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1199
1200#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1201 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1202
1203#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1204 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1205
1206#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1207 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1208
1209/* Use ext scanning if set ext scan param and ext scan enable is supported */
1210#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1211 ((dev)->commands[37] & 0x40))
1212/* Use ext create connection if command is supported */
1213#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1214
1215/* Extended advertising support */
1216#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1217
1218/* ----- HCI protocols ----- */
1219#define HCI_PROTO_DEFER 0x01
1220
1221static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1222 __u8 type, __u8 *flags)
1223{
1224 switch (type) {
1225 case ACL_LINK:
1226 return l2cap_connect_ind(hdev, bdaddr);
1227
1228 case SCO_LINK:
1229 case ESCO_LINK:
1230 return sco_connect_ind(hdev, bdaddr, flags);
1231
1232 default:
1233 BT_ERR("unknown link type %d", type);
1234 return -EINVAL;
1235 }
1236}
1237
1238static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1239{
1240 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1241 return HCI_ERROR_REMOTE_USER_TERM;
1242
1243 return l2cap_disconn_ind(conn);
1244}
1245
1246/* ----- HCI callbacks ----- */
1247struct hci_cb {
1248 struct list_head list;
1249
1250 char *name;
1251
1252 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1253 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1254 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1255 __u8 encrypt);
1256 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1257 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1258};
1259
1260static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1261{
1262 struct hci_cb *cb;
1263
1264 mutex_lock(&hci_cb_list_lock);
1265 list_for_each_entry(cb, &hci_cb_list, list) {
1266 if (cb->connect_cfm)
1267 cb->connect_cfm(conn, status);
1268 }
1269 mutex_unlock(&hci_cb_list_lock);
1270
1271 if (conn->connect_cfm_cb)
1272 conn->connect_cfm_cb(conn, status);
1273}
1274
1275static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1276{
1277 struct hci_cb *cb;
1278
1279 mutex_lock(&hci_cb_list_lock);
1280 list_for_each_entry(cb, &hci_cb_list, list) {
1281 if (cb->disconn_cfm)
1282 cb->disconn_cfm(conn, reason);
1283 }
1284 mutex_unlock(&hci_cb_list_lock);
1285
1286 if (conn->disconn_cfm_cb)
1287 conn->disconn_cfm_cb(conn, reason);
1288}
1289
1290static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1291{
1292 struct hci_cb *cb;
1293 __u8 encrypt;
1294
1295 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1296 return;
1297
1298 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1299
1300 mutex_lock(&hci_cb_list_lock);
1301 list_for_each_entry(cb, &hci_cb_list, list) {
1302 if (cb->security_cfm)
1303 cb->security_cfm(conn, status, encrypt);
1304 }
1305 mutex_unlock(&hci_cb_list_lock);
1306
1307 if (conn->security_cfm_cb)
1308 conn->security_cfm_cb(conn, status);
1309}
1310
1311static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1312 __u8 encrypt)
1313{
1314 struct hci_cb *cb;
1315
1316 if (conn->sec_level == BT_SECURITY_SDP)
1317 conn->sec_level = BT_SECURITY_LOW;
1318
1319 if (conn->pending_sec_level > conn->sec_level)
1320 conn->sec_level = conn->pending_sec_level;
1321
1322 mutex_lock(&hci_cb_list_lock);
1323 list_for_each_entry(cb, &hci_cb_list, list) {
1324 if (cb->security_cfm)
1325 cb->security_cfm(conn, status, encrypt);
1326 }
1327 mutex_unlock(&hci_cb_list_lock);
1328
1329 if (conn->security_cfm_cb)
1330 conn->security_cfm_cb(conn, status);
1331}
1332
1333static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1334{
1335 struct hci_cb *cb;
1336
1337 mutex_lock(&hci_cb_list_lock);
1338 list_for_each_entry(cb, &hci_cb_list, list) {
1339 if (cb->key_change_cfm)
1340 cb->key_change_cfm(conn, status);
1341 }
1342 mutex_unlock(&hci_cb_list_lock);
1343}
1344
1345static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1346 __u8 role)
1347{
1348 struct hci_cb *cb;
1349
1350 mutex_lock(&hci_cb_list_lock);
1351 list_for_each_entry(cb, &hci_cb_list, list) {
1352 if (cb->role_switch_cfm)
1353 cb->role_switch_cfm(conn, status, role);
1354 }
1355 mutex_unlock(&hci_cb_list_lock);
1356}
1357
1358static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1359 size_t *data_len)
1360{
1361 size_t parsed = 0;
1362
1363 if (eir_len < 2)
1364 return NULL;
1365
1366 while (parsed < eir_len - 1) {
1367 u8 field_len = eir[0];
1368
1369 if (field_len == 0)
1370 break;
1371
1372 parsed += field_len + 1;
1373
1374 if (parsed > eir_len)
1375 break;
1376
1377 if (eir[1] != type) {
1378 eir += field_len + 1;
1379 continue;
1380 }
1381
1382 /* Zero length data */
1383 if (field_len == 1)
1384 return NULL;
1385
1386 if (data_len)
1387 *data_len = field_len - 1;
1388
1389 return &eir[2];
1390 }
1391
1392 return NULL;
1393}
1394
1395static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1396{
1397 if (addr_type != ADDR_LE_DEV_RANDOM)
1398 return false;
1399
1400 if ((bdaddr->b[5] & 0xc0) == 0x40)
1401 return true;
1402
1403 return false;
1404}
1405
1406static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1407{
1408 if (addr_type == ADDR_LE_DEV_PUBLIC)
1409 return true;
1410
1411 /* Check for Random Static address type */
1412 if ((addr->b[5] & 0xc0) == 0xc0)
1413 return true;
1414
1415 return false;
1416}
1417
1418static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1419 bdaddr_t *bdaddr, u8 addr_type)
1420{
1421 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1422 return NULL;
1423
1424 return hci_find_irk_by_rpa(hdev, bdaddr);
1425}
1426
1427static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1428 u16 to_multiplier)
1429{
1430 u16 max_latency;
1431
1432 if (min > max || min < 6 || max > 3200)
1433 return -EINVAL;
1434
1435 if (to_multiplier < 10 || to_multiplier > 3200)
1436 return -EINVAL;
1437
1438 if (max >= to_multiplier * 8)
1439 return -EINVAL;
1440
1441 max_latency = (to_multiplier * 4 / max) - 1;
1442 if (latency > 499 || latency > max_latency)
1443 return -EINVAL;
1444
1445 return 0;
1446}
1447
1448int hci_register_cb(struct hci_cb *hcb);
1449int hci_unregister_cb(struct hci_cb *hcb);
1450
1451struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1452 const void *param, u32 timeout);
1453struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1454 const void *param, u8 event, u32 timeout);
1455int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1456 const void *param);
1457
1458int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1459 const void *param);
1460void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1461void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1462
1463void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1464
1465struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1466 const void *param, u32 timeout);
1467
1468/* ----- HCI Sockets ----- */
1469void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1470void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1471 int flag, struct sock *skip_sk);
1472void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1473void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1474 void *data, u16 data_len, ktime_t tstamp,
1475 int flag, struct sock *skip_sk);
1476
1477void hci_sock_dev_event(struct hci_dev *hdev, int event);
1478
1479#define HCI_MGMT_VAR_LEN BIT(0)
1480#define HCI_MGMT_NO_HDEV BIT(1)
1481#define HCI_MGMT_UNTRUSTED BIT(2)
1482#define HCI_MGMT_UNCONFIGURED BIT(3)
1483
1484struct hci_mgmt_handler {
1485 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1486 u16 data_len);
1487 size_t data_len;
1488 unsigned long flags;
1489};
1490
1491struct hci_mgmt_chan {
1492 struct list_head list;
1493 unsigned short channel;
1494 size_t handler_count;
1495 const struct hci_mgmt_handler *handlers;
1496 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1497};
1498
1499int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1500void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1501
1502/* Management interface */
1503#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1504#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1505 BIT(BDADDR_LE_RANDOM))
1506#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1507 BIT(BDADDR_LE_PUBLIC) | \
1508 BIT(BDADDR_LE_RANDOM))
1509
1510/* These LE scan and inquiry parameters were chosen according to LE General
1511 * Discovery Procedure specification.
1512 */
1513#define DISCOV_LE_SCAN_WIN 0x12
1514#define DISCOV_LE_SCAN_INT 0x12
1515#define DISCOV_LE_TIMEOUT 10240 /* msec */
1516#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1517#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1518#define DISCOV_BREDR_INQUIRY_LEN 0x08
1519#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1520#define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */
1521#define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */
1522
1523void mgmt_fill_version_info(void *ver);
1524int mgmt_new_settings(struct hci_dev *hdev);
1525void mgmt_index_added(struct hci_dev *hdev);
1526void mgmt_index_removed(struct hci_dev *hdev);
1527void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1528void mgmt_power_on(struct hci_dev *hdev, int err);
1529void __mgmt_power_off(struct hci_dev *hdev);
1530void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1531 bool persistent);
1532void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1533 u32 flags, u8 *name, u8 name_len);
1534void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 link_type, u8 addr_type, u8 reason,
1536 bool mgmt_connected);
1537void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1538 u8 link_type, u8 addr_type, u8 status);
1539void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1540 u8 addr_type, u8 status);
1541void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1542void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1543 u8 status);
1544void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1545 u8 status);
1546int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1547 u8 link_type, u8 addr_type, u32 value,
1548 u8 confirm_hint);
1549int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1550 u8 link_type, u8 addr_type, u8 status);
1551int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1552 u8 link_type, u8 addr_type, u8 status);
1553int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 link_type, u8 addr_type);
1555int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1556 u8 link_type, u8 addr_type, u8 status);
1557int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1558 u8 link_type, u8 addr_type, u8 status);
1559int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1560 u8 link_type, u8 addr_type, u32 passkey,
1561 u8 entered);
1562void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1563void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1564void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1565void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1566 u8 status);
1567void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1568void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1569void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1570void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1571 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1572 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1573void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1574 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1575void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1576bool mgmt_powering_down(struct hci_dev *hdev);
1577void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1578void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1579void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1580 bool persistent);
1581void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1582 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1583 u16 max_interval, u16 latency, u16 timeout);
1584void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1585bool mgmt_get_connectable(struct hci_dev *hdev);
1586void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1587void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1588u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1589void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1590 u8 instance);
1591void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1592 u8 instance);
1593int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1594
1595u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1596 u16 to_multiplier);
1597void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1598 __u8 ltk[16], __u8 key_size);
1599
1600void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1601 u8 *bdaddr_type);
1602
1603#define SCO_AIRMODE_MASK 0x0003
1604#define SCO_AIRMODE_CVSD 0x0000
1605#define SCO_AIRMODE_TRANSP 0x0003
1606
1607#endif /* __HCI_CORE_H */
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/idr.h>
29#include <linux/leds.h>
30#include <linux/rculist.h>
31
32#include <net/bluetooth/hci.h>
33#include <net/bluetooth/hci_sock.h>
34
35/* HCI priority */
36#define HCI_PRIO_MAX 7
37
38/* HCI Core structures */
39struct inquiry_data {
40 bdaddr_t bdaddr;
41 __u8 pscan_rep_mode;
42 __u8 pscan_period_mode;
43 __u8 pscan_mode;
44 __u8 dev_class[3];
45 __le16 clock_offset;
46 __s8 rssi;
47 __u8 ssp_mode;
48};
49
50struct inquiry_entry {
51 struct list_head all; /* inq_cache.all */
52 struct list_head list; /* unknown or resolve */
53 enum {
54 NAME_NOT_KNOWN,
55 NAME_NEEDED,
56 NAME_PENDING,
57 NAME_KNOWN,
58 } name_state;
59 __u32 timestamp;
60 struct inquiry_data data;
61};
62
63struct discovery_state {
64 int type;
65 enum {
66 DISCOVERY_STOPPED,
67 DISCOVERY_STARTING,
68 DISCOVERY_FINDING,
69 DISCOVERY_RESOLVING,
70 DISCOVERY_STOPPING,
71 } state;
72 struct list_head all; /* All devices found during inquiry */
73 struct list_head unknown; /* Name state not known */
74 struct list_head resolve; /* Name needs to be resolved */
75 __u32 timestamp;
76 bdaddr_t last_adv_addr;
77 u8 last_adv_addr_type;
78 s8 last_adv_rssi;
79 u32 last_adv_flags;
80 u8 last_adv_data[HCI_MAX_AD_LENGTH];
81 u8 last_adv_data_len;
82 bool report_invalid_rssi;
83 bool result_filtering;
84 bool limited;
85 s8 rssi;
86 u16 uuid_count;
87 u8 (*uuids)[16];
88 unsigned long scan_start;
89 unsigned long scan_duration;
90};
91
92#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
93
94enum suspend_tasks {
95 SUSPEND_PAUSE_DISCOVERY,
96 SUSPEND_UNPAUSE_DISCOVERY,
97
98 SUSPEND_PAUSE_ADVERTISING,
99 SUSPEND_UNPAUSE_ADVERTISING,
100
101 SUSPEND_SCAN_DISABLE,
102 SUSPEND_SCAN_ENABLE,
103 SUSPEND_DISCONNECTING,
104
105 SUSPEND_POWERING_DOWN,
106
107 SUSPEND_PREPARE_NOTIFIER,
108 __SUSPEND_NUM_TASKS
109};
110
111enum suspended_state {
112 BT_RUNNING = 0,
113 BT_SUSPEND_DISCONNECT,
114 BT_SUSPEND_CONFIGURE_WAKE,
115};
116
117struct hci_conn_hash {
118 struct list_head list;
119 unsigned int acl_num;
120 unsigned int amp_num;
121 unsigned int sco_num;
122 unsigned int le_num;
123 unsigned int le_num_slave;
124};
125
126struct bdaddr_list {
127 struct list_head list;
128 bdaddr_t bdaddr;
129 u8 bdaddr_type;
130};
131
132struct bdaddr_list_with_irk {
133 struct list_head list;
134 bdaddr_t bdaddr;
135 u8 bdaddr_type;
136 u8 peer_irk[16];
137 u8 local_irk[16];
138};
139
140struct bdaddr_list_with_flags {
141 struct list_head list;
142 bdaddr_t bdaddr;
143 u8 bdaddr_type;
144 u32 current_flags;
145};
146
147enum hci_conn_flags {
148 HCI_CONN_FLAG_REMOTE_WAKEUP,
149 HCI_CONN_FLAG_MAX
150};
151
152#define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
153
154/* Make sure number of flags doesn't exceed sizeof(current_flags) */
155static_assert(HCI_CONN_FLAG_MAX < 32);
156
157struct bt_uuid {
158 struct list_head list;
159 u8 uuid[16];
160 u8 size;
161 u8 svc_hint;
162};
163
164struct blocked_key {
165 struct list_head list;
166 struct rcu_head rcu;
167 u8 type;
168 u8 val[16];
169};
170
171struct smp_csrk {
172 bdaddr_t bdaddr;
173 u8 bdaddr_type;
174 u8 type;
175 u8 val[16];
176};
177
178struct smp_ltk {
179 struct list_head list;
180 struct rcu_head rcu;
181 bdaddr_t bdaddr;
182 u8 bdaddr_type;
183 u8 authenticated;
184 u8 type;
185 u8 enc_size;
186 __le16 ediv;
187 __le64 rand;
188 u8 val[16];
189};
190
191struct smp_irk {
192 struct list_head list;
193 struct rcu_head rcu;
194 bdaddr_t rpa;
195 bdaddr_t bdaddr;
196 u8 addr_type;
197 u8 val[16];
198};
199
200struct link_key {
201 struct list_head list;
202 struct rcu_head rcu;
203 bdaddr_t bdaddr;
204 u8 type;
205 u8 val[HCI_LINK_KEY_SIZE];
206 u8 pin_len;
207};
208
209struct oob_data {
210 struct list_head list;
211 bdaddr_t bdaddr;
212 u8 bdaddr_type;
213 u8 present;
214 u8 hash192[16];
215 u8 rand192[16];
216 u8 hash256[16];
217 u8 rand256[16];
218};
219
220struct adv_info {
221 struct list_head list;
222 bool pending;
223 __u8 instance;
224 __u32 flags;
225 __u16 timeout;
226 __u16 remaining_time;
227 __u16 duration;
228 __u16 adv_data_len;
229 __u8 adv_data[HCI_MAX_AD_LENGTH];
230 __u16 scan_rsp_len;
231 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
232 __s8 tx_power;
233 bdaddr_t random_addr;
234 bool rpa_expired;
235 struct delayed_work rpa_expired_cb;
236};
237
238#define HCI_MAX_ADV_INSTANCES 5
239#define HCI_DEFAULT_ADV_DURATION 2
240
241struct adv_pattern {
242 struct list_head list;
243 __u8 ad_type;
244 __u8 offset;
245 __u8 length;
246 __u8 value[HCI_MAX_AD_LENGTH];
247};
248
249struct adv_monitor {
250 struct list_head patterns;
251 bool active;
252 __u16 handle;
253};
254
255#define HCI_MIN_ADV_MONITOR_HANDLE 1
256#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
257#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
258
259#define HCI_MAX_SHORT_NAME_LENGTH 10
260
261/* Min encryption key size to match with SMP */
262#define HCI_MIN_ENC_KEY_SIZE 7
263
264/* Default LE RPA expiry time, 15 minutes */
265#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
266
267/* Default min/max age of connection information (1s/3s) */
268#define DEFAULT_CONN_INFO_MIN_AGE 1000
269#define DEFAULT_CONN_INFO_MAX_AGE 3000
270/* Default authenticated payload timeout 30s */
271#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
272
273struct amp_assoc {
274 __u16 len;
275 __u16 offset;
276 __u16 rem_len;
277 __u16 len_so_far;
278 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
279};
280
281#define HCI_MAX_PAGES 3
282
283struct hci_dev {
284 struct list_head list;
285 struct mutex lock;
286
287 char name[8];
288 unsigned long flags;
289 __u16 id;
290 __u8 bus;
291 __u8 dev_type;
292 bdaddr_t bdaddr;
293 bdaddr_t setup_addr;
294 bdaddr_t public_addr;
295 bdaddr_t random_addr;
296 bdaddr_t static_addr;
297 __u8 adv_addr_type;
298 __u8 dev_name[HCI_MAX_NAME_LENGTH];
299 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
300 __u8 eir[HCI_MAX_EIR_LENGTH];
301 __u16 appearance;
302 __u8 dev_class[3];
303 __u8 major_class;
304 __u8 minor_class;
305 __u8 max_page;
306 __u8 features[HCI_MAX_PAGES][8];
307 __u8 le_features[8];
308 __u8 le_white_list_size;
309 __u8 le_resolv_list_size;
310 __u8 le_num_of_adv_sets;
311 __u8 le_states[8];
312 __u8 commands[64];
313 __u8 hci_ver;
314 __u16 hci_rev;
315 __u8 lmp_ver;
316 __u16 manufacturer;
317 __u16 lmp_subver;
318 __u16 voice_setting;
319 __u8 num_iac;
320 __u8 stored_max_keys;
321 __u8 stored_num_keys;
322 __u8 io_capability;
323 __s8 inq_tx_power;
324 __u8 err_data_reporting;
325 __u16 page_scan_interval;
326 __u16 page_scan_window;
327 __u8 page_scan_type;
328 __u8 le_adv_channel_map;
329 __u16 le_adv_min_interval;
330 __u16 le_adv_max_interval;
331 __u8 le_scan_type;
332 __u16 le_scan_interval;
333 __u16 le_scan_window;
334 __u16 le_scan_int_suspend;
335 __u16 le_scan_window_suspend;
336 __u16 le_scan_int_discovery;
337 __u16 le_scan_window_discovery;
338 __u16 le_scan_int_adv_monitor;
339 __u16 le_scan_window_adv_monitor;
340 __u16 le_scan_int_connect;
341 __u16 le_scan_window_connect;
342 __u16 le_conn_min_interval;
343 __u16 le_conn_max_interval;
344 __u16 le_conn_latency;
345 __u16 le_supv_timeout;
346 __u16 le_def_tx_len;
347 __u16 le_def_tx_time;
348 __u16 le_max_tx_len;
349 __u16 le_max_tx_time;
350 __u16 le_max_rx_len;
351 __u16 le_max_rx_time;
352 __u8 le_max_key_size;
353 __u8 le_min_key_size;
354 __u16 discov_interleaved_timeout;
355 __u16 conn_info_min_age;
356 __u16 conn_info_max_age;
357 __u16 auth_payload_timeout;
358 __u8 min_enc_key_size;
359 __u8 max_enc_key_size;
360 __u8 pairing_opts;
361 __u8 ssp_debug_mode;
362 __u8 hw_error_code;
363 __u32 clock;
364
365 __u16 devid_source;
366 __u16 devid_vendor;
367 __u16 devid_product;
368 __u16 devid_version;
369
370 __u8 def_page_scan_type;
371 __u16 def_page_scan_int;
372 __u16 def_page_scan_window;
373 __u8 def_inq_scan_type;
374 __u16 def_inq_scan_int;
375 __u16 def_inq_scan_window;
376 __u16 def_br_lsto;
377 __u16 def_page_timeout;
378 __u16 def_multi_adv_rotation_duration;
379 __u16 def_le_autoconnect_timeout;
380
381 __u16 pkt_type;
382 __u16 esco_type;
383 __u16 link_policy;
384 __u16 link_mode;
385
386 __u32 idle_timeout;
387 __u16 sniff_min_interval;
388 __u16 sniff_max_interval;
389
390 __u8 amp_status;
391 __u32 amp_total_bw;
392 __u32 amp_max_bw;
393 __u32 amp_min_latency;
394 __u32 amp_max_pdu;
395 __u8 amp_type;
396 __u16 amp_pal_cap;
397 __u16 amp_assoc_size;
398 __u32 amp_max_flush_to;
399 __u32 amp_be_flush_to;
400
401 struct amp_assoc loc_assoc;
402
403 __u8 flow_ctl_mode;
404
405 unsigned int auto_accept_delay;
406
407 unsigned long quirks;
408
409 atomic_t cmd_cnt;
410 unsigned int acl_cnt;
411 unsigned int sco_cnt;
412 unsigned int le_cnt;
413
414 unsigned int acl_mtu;
415 unsigned int sco_mtu;
416 unsigned int le_mtu;
417 unsigned int acl_pkts;
418 unsigned int sco_pkts;
419 unsigned int le_pkts;
420
421 __u16 block_len;
422 __u16 block_mtu;
423 __u16 num_blocks;
424 __u16 block_cnt;
425
426 unsigned long acl_last_tx;
427 unsigned long sco_last_tx;
428 unsigned long le_last_tx;
429
430 __u8 le_tx_def_phys;
431 __u8 le_rx_def_phys;
432
433 struct workqueue_struct *workqueue;
434 struct workqueue_struct *req_workqueue;
435
436 struct work_struct power_on;
437 struct delayed_work power_off;
438 struct work_struct error_reset;
439
440 __u16 discov_timeout;
441 struct delayed_work discov_off;
442
443 struct delayed_work service_cache;
444
445 struct delayed_work cmd_timer;
446
447 struct work_struct rx_work;
448 struct work_struct cmd_work;
449 struct work_struct tx_work;
450
451 struct work_struct discov_update;
452 struct work_struct bg_scan_update;
453 struct work_struct scan_update;
454 struct work_struct connectable_update;
455 struct work_struct discoverable_update;
456 struct delayed_work le_scan_disable;
457 struct delayed_work le_scan_restart;
458
459 struct sk_buff_head rx_q;
460 struct sk_buff_head raw_q;
461 struct sk_buff_head cmd_q;
462
463 struct sk_buff *sent_cmd;
464
465 struct mutex req_lock;
466 wait_queue_head_t req_wait_q;
467 __u32 req_status;
468 __u32 req_result;
469 struct sk_buff *req_skb;
470
471 void *smp_data;
472 void *smp_bredr_data;
473
474 struct discovery_state discovery;
475
476 int discovery_old_state;
477 bool discovery_paused;
478 int advertising_old_state;
479 bool advertising_paused;
480
481 struct notifier_block suspend_notifier;
482 struct work_struct suspend_prepare;
483 enum suspended_state suspend_state_next;
484 enum suspended_state suspend_state;
485 bool scanning_paused;
486 bool suspended;
487
488 wait_queue_head_t suspend_wait_q;
489 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
490
491 struct hci_conn_hash conn_hash;
492
493 struct list_head mgmt_pending;
494 struct list_head blacklist;
495 struct list_head whitelist;
496 struct list_head uuids;
497 struct list_head link_keys;
498 struct list_head long_term_keys;
499 struct list_head identity_resolving_keys;
500 struct list_head remote_oob_data;
501 struct list_head le_white_list;
502 struct list_head le_resolv_list;
503 struct list_head le_conn_params;
504 struct list_head pend_le_conns;
505 struct list_head pend_le_reports;
506 struct list_head blocked_keys;
507
508 struct hci_dev_stats stat;
509
510 atomic_t promisc;
511
512 const char *hw_info;
513 const char *fw_info;
514 struct dentry *debugfs;
515
516 struct device dev;
517
518 struct rfkill *rfkill;
519
520 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
521
522 __s8 adv_tx_power;
523 __u8 adv_data[HCI_MAX_AD_LENGTH];
524 __u8 adv_data_len;
525 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
526 __u8 scan_rsp_data_len;
527
528 struct list_head adv_instances;
529 unsigned int adv_instance_cnt;
530 __u8 cur_adv_instance;
531 __u16 adv_instance_timeout;
532 struct delayed_work adv_instance_expire;
533
534 struct idr adv_monitors_idr;
535 unsigned int adv_monitors_cnt;
536
537 __u8 irk[16];
538 __u32 rpa_timeout;
539 struct delayed_work rpa_expired;
540 bdaddr_t rpa;
541
542#if IS_ENABLED(CONFIG_BT_LEDS)
543 struct led_trigger *power_led;
544#endif
545
546#if IS_ENABLED(CONFIG_BT_MSFTEXT)
547 __u16 msft_opcode;
548 void *msft_data;
549#endif
550
551 int (*open)(struct hci_dev *hdev);
552 int (*close)(struct hci_dev *hdev);
553 int (*flush)(struct hci_dev *hdev);
554 int (*setup)(struct hci_dev *hdev);
555 int (*shutdown)(struct hci_dev *hdev);
556 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
557 void (*notify)(struct hci_dev *hdev, unsigned int evt);
558 void (*hw_error)(struct hci_dev *hdev, u8 code);
559 int (*post_init)(struct hci_dev *hdev);
560 int (*set_diag)(struct hci_dev *hdev, bool enable);
561 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
562 void (*cmd_timeout)(struct hci_dev *hdev);
563 bool (*prevent_wake)(struct hci_dev *hdev);
564};
565
566#define HCI_PHY_HANDLE(handle) (handle & 0xff)
567
568enum conn_reasons {
569 CONN_REASON_PAIR_DEVICE,
570 CONN_REASON_L2CAP_CHAN,
571 CONN_REASON_SCO_CONNECT,
572};
573
574struct hci_conn {
575 struct list_head list;
576
577 atomic_t refcnt;
578
579 bdaddr_t dst;
580 __u8 dst_type;
581 bdaddr_t src;
582 __u8 src_type;
583 bdaddr_t init_addr;
584 __u8 init_addr_type;
585 bdaddr_t resp_addr;
586 __u8 resp_addr_type;
587 __u16 handle;
588 __u16 state;
589 __u8 mode;
590 __u8 type;
591 __u8 role;
592 bool out;
593 __u8 attempt;
594 __u8 dev_class[3];
595 __u8 features[HCI_MAX_PAGES][8];
596 __u16 pkt_type;
597 __u16 link_policy;
598 __u8 key_type;
599 __u8 auth_type;
600 __u8 sec_level;
601 __u8 pending_sec_level;
602 __u8 pin_length;
603 __u8 enc_key_size;
604 __u8 io_capability;
605 __u32 passkey_notify;
606 __u8 passkey_entered;
607 __u16 disc_timeout;
608 __u16 conn_timeout;
609 __u16 setting;
610 __u16 auth_payload_timeout;
611 __u16 le_conn_min_interval;
612 __u16 le_conn_max_interval;
613 __u16 le_conn_interval;
614 __u16 le_conn_latency;
615 __u16 le_supv_timeout;
616 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
617 __u8 le_adv_data_len;
618 __u8 le_tx_phy;
619 __u8 le_rx_phy;
620 __s8 rssi;
621 __s8 tx_power;
622 __s8 max_tx_power;
623 unsigned long flags;
624
625 enum conn_reasons conn_reason;
626
627 __u32 clock;
628 __u16 clock_accuracy;
629
630 unsigned long conn_info_timestamp;
631
632 __u8 remote_cap;
633 __u8 remote_auth;
634 __u8 remote_id;
635
636 unsigned int sent;
637
638 struct sk_buff_head data_q;
639 struct list_head chan_list;
640
641 struct delayed_work disc_work;
642 struct delayed_work auto_accept_work;
643 struct delayed_work idle_work;
644 struct delayed_work le_conn_timeout;
645 struct work_struct le_scan_cleanup;
646
647 struct device dev;
648 struct dentry *debugfs;
649
650 struct hci_dev *hdev;
651 void *l2cap_data;
652 void *sco_data;
653 struct amp_mgr *amp_mgr;
654
655 struct hci_conn *link;
656
657 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
658 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
659 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
660};
661
662struct hci_chan {
663 struct list_head list;
664 __u16 handle;
665 struct hci_conn *conn;
666 struct sk_buff_head data_q;
667 unsigned int sent;
668 __u8 state;
669};
670
671struct hci_conn_params {
672 struct list_head list;
673 struct list_head action;
674
675 bdaddr_t addr;
676 u8 addr_type;
677
678 u16 conn_min_interval;
679 u16 conn_max_interval;
680 u16 conn_latency;
681 u16 supervision_timeout;
682
683 enum {
684 HCI_AUTO_CONN_DISABLED,
685 HCI_AUTO_CONN_REPORT,
686 HCI_AUTO_CONN_DIRECT,
687 HCI_AUTO_CONN_ALWAYS,
688 HCI_AUTO_CONN_LINK_LOSS,
689 HCI_AUTO_CONN_EXPLICIT,
690 } auto_connect;
691
692 struct hci_conn *conn;
693 bool explicit_connect;
694 u32 current_flags;
695};
696
697extern struct list_head hci_dev_list;
698extern struct list_head hci_cb_list;
699extern rwlock_t hci_dev_list_lock;
700extern struct mutex hci_cb_list_lock;
701
702#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
703#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
704#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
705#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
706#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
707#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
708#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
709
710#define hci_dev_clear_volatile_flags(hdev) \
711 do { \
712 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
713 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
714 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
715 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
716 } while (0)
717
718/* ----- HCI interface to upper protocols ----- */
719int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
720int l2cap_disconn_ind(struct hci_conn *hcon);
721void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
722
723#if IS_ENABLED(CONFIG_BT_BREDR)
724int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
725void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
726#else
727static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
728 __u8 *flags)
729{
730 return 0;
731}
732
733static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
734{
735}
736#endif
737
738/* ----- Inquiry cache ----- */
739#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
740#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
741
742static inline void discovery_init(struct hci_dev *hdev)
743{
744 hdev->discovery.state = DISCOVERY_STOPPED;
745 INIT_LIST_HEAD(&hdev->discovery.all);
746 INIT_LIST_HEAD(&hdev->discovery.unknown);
747 INIT_LIST_HEAD(&hdev->discovery.resolve);
748 hdev->discovery.report_invalid_rssi = true;
749 hdev->discovery.rssi = HCI_RSSI_INVALID;
750}
751
752static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
753{
754 hdev->discovery.result_filtering = false;
755 hdev->discovery.report_invalid_rssi = true;
756 hdev->discovery.rssi = HCI_RSSI_INVALID;
757 hdev->discovery.uuid_count = 0;
758 kfree(hdev->discovery.uuids);
759 hdev->discovery.uuids = NULL;
760 hdev->discovery.scan_start = 0;
761 hdev->discovery.scan_duration = 0;
762}
763
764bool hci_discovery_active(struct hci_dev *hdev);
765
766void hci_discovery_set_state(struct hci_dev *hdev, int state);
767
768static inline int inquiry_cache_empty(struct hci_dev *hdev)
769{
770 return list_empty(&hdev->discovery.all);
771}
772
773static inline long inquiry_cache_age(struct hci_dev *hdev)
774{
775 struct discovery_state *c = &hdev->discovery;
776 return jiffies - c->timestamp;
777}
778
779static inline long inquiry_entry_age(struct inquiry_entry *e)
780{
781 return jiffies - e->timestamp;
782}
783
784struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
785 bdaddr_t *bdaddr);
786struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
787 bdaddr_t *bdaddr);
788struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
789 bdaddr_t *bdaddr,
790 int state);
791void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
792 struct inquiry_entry *ie);
793u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
794 bool name_known);
795void hci_inquiry_cache_flush(struct hci_dev *hdev);
796
797/* ----- HCI Connections ----- */
798enum {
799 HCI_CONN_AUTH_PEND,
800 HCI_CONN_REAUTH_PEND,
801 HCI_CONN_ENCRYPT_PEND,
802 HCI_CONN_RSWITCH_PEND,
803 HCI_CONN_MODE_CHANGE_PEND,
804 HCI_CONN_SCO_SETUP_PEND,
805 HCI_CONN_MGMT_CONNECTED,
806 HCI_CONN_SSP_ENABLED,
807 HCI_CONN_SC_ENABLED,
808 HCI_CONN_AES_CCM,
809 HCI_CONN_POWER_SAVE,
810 HCI_CONN_FLUSH_KEY,
811 HCI_CONN_ENCRYPT,
812 HCI_CONN_AUTH,
813 HCI_CONN_SECURE,
814 HCI_CONN_FIPS,
815 HCI_CONN_STK_ENCRYPT,
816 HCI_CONN_AUTH_INITIATOR,
817 HCI_CONN_DROP,
818 HCI_CONN_PARAM_REMOVAL_PEND,
819 HCI_CONN_NEW_LINK_KEY,
820 HCI_CONN_SCANNING,
821 HCI_CONN_AUTH_FAILURE,
822};
823
824static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
825{
826 struct hci_dev *hdev = conn->hdev;
827 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
828 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
829}
830
831static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
832{
833 struct hci_dev *hdev = conn->hdev;
834 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
835 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
836}
837
838static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
839{
840 struct hci_conn_hash *h = &hdev->conn_hash;
841 list_add_rcu(&c->list, &h->list);
842 switch (c->type) {
843 case ACL_LINK:
844 h->acl_num++;
845 break;
846 case AMP_LINK:
847 h->amp_num++;
848 break;
849 case LE_LINK:
850 h->le_num++;
851 if (c->role == HCI_ROLE_SLAVE)
852 h->le_num_slave++;
853 break;
854 case SCO_LINK:
855 case ESCO_LINK:
856 h->sco_num++;
857 break;
858 }
859}
860
861static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
862{
863 struct hci_conn_hash *h = &hdev->conn_hash;
864
865 list_del_rcu(&c->list);
866 synchronize_rcu();
867
868 switch (c->type) {
869 case ACL_LINK:
870 h->acl_num--;
871 break;
872 case AMP_LINK:
873 h->amp_num--;
874 break;
875 case LE_LINK:
876 h->le_num--;
877 if (c->role == HCI_ROLE_SLAVE)
878 h->le_num_slave--;
879 break;
880 case SCO_LINK:
881 case ESCO_LINK:
882 h->sco_num--;
883 break;
884 }
885}
886
887static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
888{
889 struct hci_conn_hash *h = &hdev->conn_hash;
890 switch (type) {
891 case ACL_LINK:
892 return h->acl_num;
893 case AMP_LINK:
894 return h->amp_num;
895 case LE_LINK:
896 return h->le_num;
897 case SCO_LINK:
898 case ESCO_LINK:
899 return h->sco_num;
900 default:
901 return 0;
902 }
903}
904
905static inline unsigned int hci_conn_count(struct hci_dev *hdev)
906{
907 struct hci_conn_hash *c = &hdev->conn_hash;
908
909 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
910}
911
912static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
913{
914 struct hci_conn_hash *h = &hdev->conn_hash;
915 struct hci_conn *c;
916 __u8 type = INVALID_LINK;
917
918 rcu_read_lock();
919
920 list_for_each_entry_rcu(c, &h->list, list) {
921 if (c->handle == handle) {
922 type = c->type;
923 break;
924 }
925 }
926
927 rcu_read_unlock();
928
929 return type;
930}
931
932static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
933 __u16 handle)
934{
935 struct hci_conn_hash *h = &hdev->conn_hash;
936 struct hci_conn *c;
937
938 rcu_read_lock();
939
940 list_for_each_entry_rcu(c, &h->list, list) {
941 if (c->handle == handle) {
942 rcu_read_unlock();
943 return c;
944 }
945 }
946 rcu_read_unlock();
947
948 return NULL;
949}
950
951static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
952 __u8 type, bdaddr_t *ba)
953{
954 struct hci_conn_hash *h = &hdev->conn_hash;
955 struct hci_conn *c;
956
957 rcu_read_lock();
958
959 list_for_each_entry_rcu(c, &h->list, list) {
960 if (c->type == type && !bacmp(&c->dst, ba)) {
961 rcu_read_unlock();
962 return c;
963 }
964 }
965
966 rcu_read_unlock();
967
968 return NULL;
969}
970
971static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
972 bdaddr_t *ba,
973 __u8 ba_type)
974{
975 struct hci_conn_hash *h = &hdev->conn_hash;
976 struct hci_conn *c;
977
978 rcu_read_lock();
979
980 list_for_each_entry_rcu(c, &h->list, list) {
981 if (c->type != LE_LINK)
982 continue;
983
984 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
985 rcu_read_unlock();
986 return c;
987 }
988 }
989
990 rcu_read_unlock();
991
992 return NULL;
993}
994
995static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
996 __u8 type, __u16 state)
997{
998 struct hci_conn_hash *h = &hdev->conn_hash;
999 struct hci_conn *c;
1000
1001 rcu_read_lock();
1002
1003 list_for_each_entry_rcu(c, &h->list, list) {
1004 if (c->type == type && c->state == state) {
1005 rcu_read_unlock();
1006 return c;
1007 }
1008 }
1009
1010 rcu_read_unlock();
1011
1012 return NULL;
1013}
1014
1015static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1016{
1017 struct hci_conn_hash *h = &hdev->conn_hash;
1018 struct hci_conn *c;
1019
1020 rcu_read_lock();
1021
1022 list_for_each_entry_rcu(c, &h->list, list) {
1023 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1024 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1025 rcu_read_unlock();
1026 return c;
1027 }
1028 }
1029
1030 rcu_read_unlock();
1031
1032 return NULL;
1033}
1034
1035int hci_disconnect(struct hci_conn *conn, __u8 reason);
1036bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1037void hci_sco_setup(struct hci_conn *conn, __u8 status);
1038
1039struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1040 u8 role);
1041int hci_conn_del(struct hci_conn *conn);
1042void hci_conn_hash_flush(struct hci_dev *hdev);
1043void hci_conn_check_pending(struct hci_dev *hdev);
1044
1045struct hci_chan *hci_chan_create(struct hci_conn *conn);
1046void hci_chan_del(struct hci_chan *chan);
1047void hci_chan_list_flush(struct hci_conn *conn);
1048struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1049
1050struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1051 u8 dst_type, u8 sec_level,
1052 u16 conn_timeout,
1053 enum conn_reasons conn_reason);
1054struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1055 u8 dst_type, u8 sec_level, u16 conn_timeout,
1056 u8 role, bdaddr_t *direct_rpa);
1057struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1058 u8 sec_level, u8 auth_type,
1059 enum conn_reasons conn_reason);
1060struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1061 __u16 setting);
1062int hci_conn_check_link_mode(struct hci_conn *conn);
1063int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1064int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1065 bool initiator);
1066int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1067
1068void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1069
1070void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1071
1072/*
1073 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1074 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1075 * working or anything else. They just guarantee that the object is available
1076 * and can be dereferenced. So you can use its locks, local variables and any
1077 * other constant data.
1078 * Before accessing runtime data, you _must_ lock the object and then check that
1079 * it is still running. As soon as you release the locks, the connection might
1080 * get dropped, though.
1081 *
1082 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1083 * how long the underlying connection is held. So every channel that runs on the
1084 * hci_conn object calls this to prevent the connection from disappearing. As
1085 * long as you hold a device, you must also guarantee that you have a valid
1086 * reference to the device via hci_conn_get() (or the initial reference from
1087 * hci_conn_add()).
1088 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1089 * break because nobody cares for that. But this means, we cannot use
1090 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1091 */
1092
1093static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1094{
1095 get_device(&conn->dev);
1096 return conn;
1097}
1098
1099static inline void hci_conn_put(struct hci_conn *conn)
1100{
1101 put_device(&conn->dev);
1102}
1103
1104static inline void hci_conn_hold(struct hci_conn *conn)
1105{
1106 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1107
1108 atomic_inc(&conn->refcnt);
1109 cancel_delayed_work(&conn->disc_work);
1110}
1111
1112static inline void hci_conn_drop(struct hci_conn *conn)
1113{
1114 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1115
1116 if (atomic_dec_and_test(&conn->refcnt)) {
1117 unsigned long timeo;
1118
1119 switch (conn->type) {
1120 case ACL_LINK:
1121 case LE_LINK:
1122 cancel_delayed_work(&conn->idle_work);
1123 if (conn->state == BT_CONNECTED) {
1124 timeo = conn->disc_timeout;
1125 if (!conn->out)
1126 timeo *= 2;
1127 } else {
1128 timeo = 0;
1129 }
1130 break;
1131
1132 case AMP_LINK:
1133 timeo = conn->disc_timeout;
1134 break;
1135
1136 default:
1137 timeo = 0;
1138 break;
1139 }
1140
1141 cancel_delayed_work(&conn->disc_work);
1142 queue_delayed_work(conn->hdev->workqueue,
1143 &conn->disc_work, timeo);
1144 }
1145}
1146
1147/* ----- HCI Devices ----- */
1148static inline void hci_dev_put(struct hci_dev *d)
1149{
1150 BT_DBG("%s orig refcnt %d", d->name,
1151 kref_read(&d->dev.kobj.kref));
1152
1153 put_device(&d->dev);
1154}
1155
1156static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1157{
1158 BT_DBG("%s orig refcnt %d", d->name,
1159 kref_read(&d->dev.kobj.kref));
1160
1161 get_device(&d->dev);
1162 return d;
1163}
1164
1165#define hci_dev_lock(d) mutex_lock(&d->lock)
1166#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1167
1168#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1169#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1170
1171static inline void *hci_get_drvdata(struct hci_dev *hdev)
1172{
1173 return dev_get_drvdata(&hdev->dev);
1174}
1175
1176static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1177{
1178 dev_set_drvdata(&hdev->dev, data);
1179}
1180
1181struct hci_dev *hci_dev_get(int index);
1182struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1183
1184struct hci_dev *hci_alloc_dev(void);
1185void hci_free_dev(struct hci_dev *hdev);
1186int hci_register_dev(struct hci_dev *hdev);
1187void hci_unregister_dev(struct hci_dev *hdev);
1188int hci_suspend_dev(struct hci_dev *hdev);
1189int hci_resume_dev(struct hci_dev *hdev);
1190int hci_reset_dev(struct hci_dev *hdev);
1191int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1192int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1193__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1194__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1195
1196static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1197{
1198#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1199 hdev->msft_opcode = opcode;
1200#endif
1201}
1202
1203int hci_dev_open(__u16 dev);
1204int hci_dev_close(__u16 dev);
1205int hci_dev_do_close(struct hci_dev *hdev);
1206int hci_dev_reset(__u16 dev);
1207int hci_dev_reset_stat(__u16 dev);
1208int hci_dev_cmd(unsigned int cmd, void __user *arg);
1209int hci_get_dev_list(void __user *arg);
1210int hci_get_dev_info(void __user *arg);
1211int hci_get_conn_list(void __user *arg);
1212int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1213int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1214int hci_inquiry(void __user *arg);
1215
1216struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1217 bdaddr_t *bdaddr, u8 type);
1218struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1219 struct list_head *list, bdaddr_t *bdaddr,
1220 u8 type);
1221struct bdaddr_list_with_flags *
1222hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1223 u8 type);
1224int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1225int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1226 u8 type, u8 *peer_irk, u8 *local_irk);
1227int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1228 u8 type, u32 flags);
1229int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1230int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1231 u8 type);
1232int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1233 u8 type);
1234void hci_bdaddr_list_clear(struct list_head *list);
1235
1236struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1237 bdaddr_t *addr, u8 addr_type);
1238struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1239 bdaddr_t *addr, u8 addr_type);
1240void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1241void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1242
1243struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1244 bdaddr_t *addr,
1245 u8 addr_type);
1246
1247void hci_uuids_clear(struct hci_dev *hdev);
1248
1249void hci_link_keys_clear(struct hci_dev *hdev);
1250struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1251struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1252 bdaddr_t *bdaddr, u8 *val, u8 type,
1253 u8 pin_len, bool *persistent);
1254struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1255 u8 addr_type, u8 type, u8 authenticated,
1256 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1257struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1258 u8 addr_type, u8 role);
1259int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1260void hci_smp_ltks_clear(struct hci_dev *hdev);
1261int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1262
1263struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1264struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1265 u8 addr_type);
1266struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1267 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1268void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1269bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1270void hci_blocked_keys_clear(struct hci_dev *hdev);
1271void hci_smp_irks_clear(struct hci_dev *hdev);
1272
1273bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1274
1275void hci_remote_oob_data_clear(struct hci_dev *hdev);
1276struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1277 bdaddr_t *bdaddr, u8 bdaddr_type);
1278int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1279 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1280 u8 *hash256, u8 *rand256);
1281int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1282 u8 bdaddr_type);
1283
1284void hci_adv_instances_clear(struct hci_dev *hdev);
1285struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1286struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1287int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1288 u16 adv_data_len, u8 *adv_data,
1289 u16 scan_rsp_len, u8 *scan_rsp_data,
1290 u16 timeout, u16 duration);
1291int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1292void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1293
1294void hci_adv_monitors_clear(struct hci_dev *hdev);
1295void hci_free_adv_monitor(struct adv_monitor *monitor);
1296int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1297int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle);
1298bool hci_is_adv_monitoring(struct hci_dev *hdev);
1299
1300void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1301
1302void hci_init_sysfs(struct hci_dev *hdev);
1303void hci_conn_init_sysfs(struct hci_conn *conn);
1304void hci_conn_add_sysfs(struct hci_conn *conn);
1305void hci_conn_del_sysfs(struct hci_conn *conn);
1306
1307#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1308
1309/* ----- LMP capabilities ----- */
1310#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1311#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1312#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1313#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1314#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1315#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1316#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1317#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1318#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1319#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1320#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1321#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1322#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1323#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1324#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1325#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1326#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1327#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1328#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1329#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1330#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1331#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1332#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1333
1334/* ----- Extended LMP capabilities ----- */
1335#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1336#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1337#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1338#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1339#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1340#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1341
1342/* ----- Host capabilities ----- */
1343#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1344#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1345#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1346#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1347
1348#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1349 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1350#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1351 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1352
1353#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1354 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1355
1356#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1357 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1358
1359#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1360 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1361
1362/* Use LL Privacy based address resolution if supported */
1363#define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1364
1365/* Use ext scanning if set ext scan param and ext scan enable is supported */
1366#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1367 ((dev)->commands[37] & 0x40))
1368/* Use ext create connection if command is supported */
1369#define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1370
1371/* Extended advertising support */
1372#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1373
1374/* ----- HCI protocols ----- */
1375#define HCI_PROTO_DEFER 0x01
1376
1377static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1378 __u8 type, __u8 *flags)
1379{
1380 switch (type) {
1381 case ACL_LINK:
1382 return l2cap_connect_ind(hdev, bdaddr);
1383
1384 case SCO_LINK:
1385 case ESCO_LINK:
1386 return sco_connect_ind(hdev, bdaddr, flags);
1387
1388 default:
1389 BT_ERR("unknown link type %d", type);
1390 return -EINVAL;
1391 }
1392}
1393
1394static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1395{
1396 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1397 return HCI_ERROR_REMOTE_USER_TERM;
1398
1399 return l2cap_disconn_ind(conn);
1400}
1401
1402/* ----- HCI callbacks ----- */
1403struct hci_cb {
1404 struct list_head list;
1405
1406 char *name;
1407
1408 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1409 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1410 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1411 __u8 encrypt);
1412 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1413 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1414};
1415
1416static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1417{
1418 struct hci_cb *cb;
1419
1420 mutex_lock(&hci_cb_list_lock);
1421 list_for_each_entry(cb, &hci_cb_list, list) {
1422 if (cb->connect_cfm)
1423 cb->connect_cfm(conn, status);
1424 }
1425 mutex_unlock(&hci_cb_list_lock);
1426
1427 if (conn->connect_cfm_cb)
1428 conn->connect_cfm_cb(conn, status);
1429}
1430
1431static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1432{
1433 struct hci_cb *cb;
1434
1435 mutex_lock(&hci_cb_list_lock);
1436 list_for_each_entry(cb, &hci_cb_list, list) {
1437 if (cb->disconn_cfm)
1438 cb->disconn_cfm(conn, reason);
1439 }
1440 mutex_unlock(&hci_cb_list_lock);
1441
1442 if (conn->disconn_cfm_cb)
1443 conn->disconn_cfm_cb(conn, reason);
1444}
1445
1446static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1447{
1448 struct hci_cb *cb;
1449 __u8 encrypt;
1450
1451 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1452 return;
1453
1454 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1455
1456 mutex_lock(&hci_cb_list_lock);
1457 list_for_each_entry(cb, &hci_cb_list, list) {
1458 if (cb->security_cfm)
1459 cb->security_cfm(conn, status, encrypt);
1460 }
1461 mutex_unlock(&hci_cb_list_lock);
1462
1463 if (conn->security_cfm_cb)
1464 conn->security_cfm_cb(conn, status);
1465}
1466
1467static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1468{
1469 struct hci_cb *cb;
1470 __u8 encrypt;
1471
1472 if (conn->state == BT_CONFIG) {
1473 if (!status)
1474 conn->state = BT_CONNECTED;
1475
1476 hci_connect_cfm(conn, status);
1477 hci_conn_drop(conn);
1478 return;
1479 }
1480
1481 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1482 encrypt = 0x00;
1483 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1484 encrypt = 0x02;
1485 else
1486 encrypt = 0x01;
1487
1488 if (!status) {
1489 if (conn->sec_level == BT_SECURITY_SDP)
1490 conn->sec_level = BT_SECURITY_LOW;
1491
1492 if (conn->pending_sec_level > conn->sec_level)
1493 conn->sec_level = conn->pending_sec_level;
1494 }
1495
1496 mutex_lock(&hci_cb_list_lock);
1497 list_for_each_entry(cb, &hci_cb_list, list) {
1498 if (cb->security_cfm)
1499 cb->security_cfm(conn, status, encrypt);
1500 }
1501 mutex_unlock(&hci_cb_list_lock);
1502
1503 if (conn->security_cfm_cb)
1504 conn->security_cfm_cb(conn, status);
1505}
1506
1507static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1508{
1509 struct hci_cb *cb;
1510
1511 mutex_lock(&hci_cb_list_lock);
1512 list_for_each_entry(cb, &hci_cb_list, list) {
1513 if (cb->key_change_cfm)
1514 cb->key_change_cfm(conn, status);
1515 }
1516 mutex_unlock(&hci_cb_list_lock);
1517}
1518
1519static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1520 __u8 role)
1521{
1522 struct hci_cb *cb;
1523
1524 mutex_lock(&hci_cb_list_lock);
1525 list_for_each_entry(cb, &hci_cb_list, list) {
1526 if (cb->role_switch_cfm)
1527 cb->role_switch_cfm(conn, status, role);
1528 }
1529 mutex_unlock(&hci_cb_list_lock);
1530}
1531
1532static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1533 size_t *data_len)
1534{
1535 size_t parsed = 0;
1536
1537 if (eir_len < 2)
1538 return NULL;
1539
1540 while (parsed < eir_len - 1) {
1541 u8 field_len = eir[0];
1542
1543 if (field_len == 0)
1544 break;
1545
1546 parsed += field_len + 1;
1547
1548 if (parsed > eir_len)
1549 break;
1550
1551 if (eir[1] != type) {
1552 eir += field_len + 1;
1553 continue;
1554 }
1555
1556 /* Zero length data */
1557 if (field_len == 1)
1558 return NULL;
1559
1560 if (data_len)
1561 *data_len = field_len - 1;
1562
1563 return &eir[2];
1564 }
1565
1566 return NULL;
1567}
1568
1569static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1570{
1571 if (addr_type != ADDR_LE_DEV_RANDOM)
1572 return false;
1573
1574 if ((bdaddr->b[5] & 0xc0) == 0x40)
1575 return true;
1576
1577 return false;
1578}
1579
1580static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1581{
1582 if (addr_type == ADDR_LE_DEV_PUBLIC)
1583 return true;
1584
1585 /* Check for Random Static address type */
1586 if ((addr->b[5] & 0xc0) == 0xc0)
1587 return true;
1588
1589 return false;
1590}
1591
1592static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1593 bdaddr_t *bdaddr, u8 addr_type)
1594{
1595 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1596 return NULL;
1597
1598 return hci_find_irk_by_rpa(hdev, bdaddr);
1599}
1600
1601static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1602 u16 to_multiplier)
1603{
1604 u16 max_latency;
1605
1606 if (min > max || min < 6 || max > 3200)
1607 return -EINVAL;
1608
1609 if (to_multiplier < 10 || to_multiplier > 3200)
1610 return -EINVAL;
1611
1612 if (max >= to_multiplier * 8)
1613 return -EINVAL;
1614
1615 max_latency = (to_multiplier * 4 / max) - 1;
1616 if (latency > 499 || latency > max_latency)
1617 return -EINVAL;
1618
1619 return 0;
1620}
1621
1622int hci_register_cb(struct hci_cb *hcb);
1623int hci_unregister_cb(struct hci_cb *hcb);
1624
1625struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1626 const void *param, u32 timeout);
1627struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1628 const void *param, u8 event, u32 timeout);
1629int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1630 const void *param);
1631
1632int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1633 const void *param);
1634void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1635void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1636
1637void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1638
1639struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1640 const void *param, u32 timeout);
1641
1642u32 hci_conn_get_phy(struct hci_conn *conn);
1643
1644/* ----- HCI Sockets ----- */
1645void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1646void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1647 int flag, struct sock *skip_sk);
1648void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1649void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1650 void *data, u16 data_len, ktime_t tstamp,
1651 int flag, struct sock *skip_sk);
1652
1653void hci_sock_dev_event(struct hci_dev *hdev, int event);
1654
1655#define HCI_MGMT_VAR_LEN BIT(0)
1656#define HCI_MGMT_NO_HDEV BIT(1)
1657#define HCI_MGMT_UNTRUSTED BIT(2)
1658#define HCI_MGMT_UNCONFIGURED BIT(3)
1659#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1660
1661struct hci_mgmt_handler {
1662 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1663 u16 data_len);
1664 size_t data_len;
1665 unsigned long flags;
1666};
1667
1668struct hci_mgmt_chan {
1669 struct list_head list;
1670 unsigned short channel;
1671 size_t handler_count;
1672 const struct hci_mgmt_handler *handlers;
1673 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1674};
1675
1676int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1677void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1678
1679/* Management interface */
1680#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1681#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1682 BIT(BDADDR_LE_RANDOM))
1683#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1684 BIT(BDADDR_LE_PUBLIC) | \
1685 BIT(BDADDR_LE_RANDOM))
1686
1687/* These LE scan and inquiry parameters were chosen according to LE General
1688 * Discovery Procedure specification.
1689 */
1690#define DISCOV_LE_SCAN_WIN 0x12
1691#define DISCOV_LE_SCAN_INT 0x12
1692#define DISCOV_LE_TIMEOUT 10240 /* msec */
1693#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1694#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1695#define DISCOV_BREDR_INQUIRY_LEN 0x08
1696#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1697#define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */
1698#define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */
1699
1700void mgmt_fill_version_info(void *ver);
1701int mgmt_new_settings(struct hci_dev *hdev);
1702void mgmt_index_added(struct hci_dev *hdev);
1703void mgmt_index_removed(struct hci_dev *hdev);
1704void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1705void mgmt_power_on(struct hci_dev *hdev, int err);
1706void __mgmt_power_off(struct hci_dev *hdev);
1707void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1708 bool persistent);
1709void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1710 u32 flags, u8 *name, u8 name_len);
1711void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1712 u8 link_type, u8 addr_type, u8 reason,
1713 bool mgmt_connected);
1714void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1715 u8 link_type, u8 addr_type, u8 status);
1716void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1717 u8 addr_type, u8 status);
1718void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1719void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1720 u8 status);
1721void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1722 u8 status);
1723int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1724 u8 link_type, u8 addr_type, u32 value,
1725 u8 confirm_hint);
1726int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1727 u8 link_type, u8 addr_type, u8 status);
1728int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1729 u8 link_type, u8 addr_type, u8 status);
1730int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1731 u8 link_type, u8 addr_type);
1732int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1733 u8 link_type, u8 addr_type, u8 status);
1734int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1735 u8 link_type, u8 addr_type, u8 status);
1736int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1737 u8 link_type, u8 addr_type, u32 passkey,
1738 u8 entered);
1739void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1740void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1741void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1742void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1743 u8 status);
1744void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1745void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1746void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1747void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1748 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1749 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1750void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1751 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1752void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1753bool mgmt_powering_down(struct hci_dev *hdev);
1754void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1755void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1756void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1757 bool persistent);
1758void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1759 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1760 u16 max_interval, u16 latency, u16 timeout);
1761void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1762bool mgmt_get_connectable(struct hci_dev *hdev);
1763void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1764void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1765u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1766void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1767 u8 instance);
1768void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1769 u8 instance);
1770int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1771
1772u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1773 u16 to_multiplier);
1774void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1775 __u8 ltk[16], __u8 key_size);
1776
1777void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1778 u8 *bdaddr_type);
1779
1780#define SCO_AIRMODE_MASK 0x0003
1781#define SCO_AIRMODE_CVSD 0x0000
1782#define SCO_AIRMODE_TRANSP 0x0003
1783
1784#endif /* __HCI_CORE_H */