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 maximum id value */
38 #define HCI_MAX_ID 10000
39
40 /* HCI Core structures */
41 struct inquiry_data {
42 bdaddr_t bdaddr;
43 __u8 pscan_rep_mode;
44 __u8 pscan_period_mode;
45 __u8 pscan_mode;
46 __u8 dev_class[3];
47 __le16 clock_offset;
48 __s8 rssi;
49 __u8 ssp_mode;
50 };
51
52 struct inquiry_entry {
53 struct list_head all; /* inq_cache.all */
54 struct list_head list; /* unknown or resolve */
55 enum {
56 NAME_NOT_KNOWN,
57 NAME_NEEDED,
58 NAME_PENDING,
59 NAME_KNOWN,
60 } name_state;
61 __u32 timestamp;
62 struct inquiry_data data;
63 };
64
65 struct discovery_state {
66 int type;
67 enum {
68 DISCOVERY_STOPPED,
69 DISCOVERY_STARTING,
70 DISCOVERY_FINDING,
71 DISCOVERY_RESOLVING,
72 DISCOVERY_STOPPING,
73 } state;
74 struct list_head all; /* All devices found during inquiry */
75 struct list_head unknown; /* Name state not known */
76 struct list_head resolve; /* Name needs to be resolved */
77 __u32 timestamp;
78 bdaddr_t last_adv_addr;
79 u8 last_adv_addr_type;
80 s8 last_adv_rssi;
81 u32 last_adv_flags;
82 u8 last_adv_data[HCI_MAX_AD_LENGTH];
83 u8 last_adv_data_len;
84 bool report_invalid_rssi;
85 bool result_filtering;
86 bool limited;
87 s8 rssi;
88 u16 uuid_count;
89 u8 (*uuids)[16];
90 unsigned long scan_start;
91 unsigned long scan_duration;
92 };
93
94 struct hci_conn_hash {
95 struct list_head list;
96 unsigned int acl_num;
97 unsigned int amp_num;
98 unsigned int sco_num;
99 unsigned int le_num;
100 unsigned int le_num_slave;
101 };
102
103 struct bdaddr_list {
104 struct list_head list;
105 bdaddr_t bdaddr;
106 u8 bdaddr_type;
107 };
108
109 struct bt_uuid {
110 struct list_head list;
111 u8 uuid[16];
112 u8 size;
113 u8 svc_hint;
114 };
115
116 struct smp_csrk {
117 bdaddr_t bdaddr;
118 u8 bdaddr_type;
119 u8 type;
120 u8 val[16];
121 };
122
123 struct smp_ltk {
124 struct list_head list;
125 struct rcu_head rcu;
126 bdaddr_t bdaddr;
127 u8 bdaddr_type;
128 u8 authenticated;
129 u8 type;
130 u8 enc_size;
131 __le16 ediv;
132 __le64 rand;
133 u8 val[16];
134 };
135
136 struct smp_irk {
137 struct list_head list;
138 struct rcu_head rcu;
139 bdaddr_t rpa;
140 bdaddr_t bdaddr;
141 u8 addr_type;
142 u8 val[16];
143 };
144
145 struct link_key {
146 struct list_head list;
147 struct rcu_head rcu;
148 bdaddr_t bdaddr;
149 u8 type;
150 u8 val[HCI_LINK_KEY_SIZE];
151 u8 pin_len;
152 };
153
154 struct oob_data {
155 struct list_head list;
156 bdaddr_t bdaddr;
157 u8 bdaddr_type;
158 u8 present;
159 u8 hash192[16];
160 u8 rand192[16];
161 u8 hash256[16];
162 u8 rand256[16];
163 };
164
165 struct adv_info {
166 struct list_head list;
167 bool pending;
168 __u8 instance;
169 __u32 flags;
170 __u16 timeout;
171 __u16 remaining_time;
172 __u16 duration;
173 __u16 adv_data_len;
174 __u8 adv_data[HCI_MAX_AD_LENGTH];
175 __u16 scan_rsp_len;
176 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
177 __s8 tx_power;
178 bdaddr_t random_addr;
179 bool rpa_expired;
180 struct delayed_work rpa_expired_cb;
181 };
182
183 #define HCI_MAX_ADV_INSTANCES 5
184 #define HCI_DEFAULT_ADV_DURATION 2
185
186 #define HCI_MAX_SHORT_NAME_LENGTH 10
187
188 /* Min encryption key size to match with SMP */
189 #define HCI_MIN_ENC_KEY_SIZE 7
190
191 /* Default LE RPA expiry time, 15 minutes */
192 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
193
194 /* Default min/max age of connection information (1s/3s) */
195 #define DEFAULT_CONN_INFO_MIN_AGE 1000
196 #define DEFAULT_CONN_INFO_MAX_AGE 3000
197
198 struct amp_assoc {
199 __u16 len;
200 __u16 offset;
201 __u16 rem_len;
202 __u16 len_so_far;
203 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
204 };
205
206 #define HCI_MAX_PAGES 3
207
208 struct hci_dev {
209 struct list_head list;
210 struct mutex lock;
211
212 char name[8];
213 unsigned long flags;
214 __u16 id;
215 __u8 bus;
216 __u8 dev_type;
217 bdaddr_t bdaddr;
218 bdaddr_t setup_addr;
219 bdaddr_t public_addr;
220 bdaddr_t random_addr;
221 bdaddr_t static_addr;
222 __u8 adv_addr_type;
223 __u8 dev_name[HCI_MAX_NAME_LENGTH];
224 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
225 __u8 eir[HCI_MAX_EIR_LENGTH];
226 __u16 appearance;
227 __u8 dev_class[3];
228 __u8 major_class;
229 __u8 minor_class;
230 __u8 max_page;
231 __u8 features[HCI_MAX_PAGES][8];
232 __u8 le_features[8];
233 __u8 le_white_list_size;
234 __u8 le_resolv_list_size;
235 __u8 le_num_of_adv_sets;
236 __u8 le_states[8];
237 __u8 commands[64];
238 __u8 hci_ver;
239 __u16 hci_rev;
240 __u8 lmp_ver;
241 __u16 manufacturer;
242 __u16 lmp_subver;
243 __u16 voice_setting;
244 __u8 num_iac;
245 __u8 stored_max_keys;
246 __u8 stored_num_keys;
247 __u8 io_capability;
248 __s8 inq_tx_power;
249 __u16 page_scan_interval;
250 __u16 page_scan_window;
251 __u8 page_scan_type;
252 __u8 le_adv_channel_map;
253 __u16 le_adv_min_interval;
254 __u16 le_adv_max_interval;
255 __u8 le_scan_type;
256 __u16 le_scan_interval;
257 __u16 le_scan_window;
258 __u16 le_conn_min_interval;
259 __u16 le_conn_max_interval;
260 __u16 le_conn_latency;
261 __u16 le_supv_timeout;
262 __u16 le_def_tx_len;
263 __u16 le_def_tx_time;
264 __u16 le_max_tx_len;
265 __u16 le_max_tx_time;
266 __u16 le_max_rx_len;
267 __u16 le_max_rx_time;
268 __u8 le_max_key_size;
269 __u8 le_min_key_size;
270 __u16 discov_interleaved_timeout;
271 __u16 conn_info_min_age;
272 __u16 conn_info_max_age;
273 __u8 ssp_debug_mode;
274 __u8 hw_error_code;
275 __u32 clock;
276
277 __u16 devid_source;
278 __u16 devid_vendor;
279 __u16 devid_product;
280 __u16 devid_version;
281
282 __u16 pkt_type;
283 __u16 esco_type;
284 __u16 link_policy;
285 __u16 link_mode;
286
287 __u32 idle_timeout;
288 __u16 sniff_min_interval;
289 __u16 sniff_max_interval;
290
291 __u8 amp_status;
292 __u32 amp_total_bw;
293 __u32 amp_max_bw;
294 __u32 amp_min_latency;
295 __u32 amp_max_pdu;
296 __u8 amp_type;
297 __u16 amp_pal_cap;
298 __u16 amp_assoc_size;
299 __u32 amp_max_flush_to;
300 __u32 amp_be_flush_to;
301
302 struct amp_assoc loc_assoc;
303
304 __u8 flow_ctl_mode;
305
306 unsigned int auto_accept_delay;
307
308 unsigned long quirks;
309
310 atomic_t cmd_cnt;
311 unsigned int acl_cnt;
312 unsigned int sco_cnt;
313 unsigned int le_cnt;
314
315 unsigned int acl_mtu;
316 unsigned int sco_mtu;
317 unsigned int le_mtu;
318 unsigned int acl_pkts;
319 unsigned int sco_pkts;
320 unsigned int le_pkts;
321
322 __u16 block_len;
323 __u16 block_mtu;
324 __u16 num_blocks;
325 __u16 block_cnt;
326
327 unsigned long acl_last_tx;
328 unsigned long sco_last_tx;
329 unsigned long le_last_tx;
330
331 __u8 le_tx_def_phys;
332 __u8 le_rx_def_phys;
333
334 struct workqueue_struct *workqueue;
335 struct workqueue_struct *req_workqueue;
336
337 struct work_struct power_on;
338 struct delayed_work power_off;
339 struct work_struct error_reset;
340
341 __u16 discov_timeout;
342 struct delayed_work discov_off;
343
344 struct delayed_work service_cache;
345
346 struct delayed_work cmd_timer;
347
348 struct work_struct rx_work;
349 struct work_struct cmd_work;
350 struct work_struct tx_work;
351
352 struct work_struct discov_update;
353 struct work_struct bg_scan_update;
354 struct work_struct scan_update;
355 struct work_struct connectable_update;
356 struct work_struct discoverable_update;
357 struct delayed_work le_scan_disable;
358 struct delayed_work le_scan_restart;
359
360 struct sk_buff_head rx_q;
361 struct sk_buff_head raw_q;
362 struct sk_buff_head cmd_q;
363
364 struct sk_buff *sent_cmd;
365
366 struct mutex req_lock;
367 wait_queue_head_t req_wait_q;
368 __u32 req_status;
369 __u32 req_result;
370 struct sk_buff *req_skb;
371
372 void *smp_data;
373 void *smp_bredr_data;
374
375 struct discovery_state discovery;
376 struct hci_conn_hash conn_hash;
377
378 struct list_head mgmt_pending;
379 struct list_head blacklist;
380 struct list_head whitelist;
381 struct list_head uuids;
382 struct list_head link_keys;
383 struct list_head long_term_keys;
384 struct list_head identity_resolving_keys;
385 struct list_head remote_oob_data;
386 struct list_head le_white_list;
387 struct list_head le_resolv_list;
388 struct list_head le_conn_params;
389 struct list_head pend_le_conns;
390 struct list_head pend_le_reports;
391
392 struct hci_dev_stats stat;
393
394 atomic_t promisc;
395
396 const char *hw_info;
397 const char *fw_info;
398 struct dentry *debugfs;
399
400 struct device dev;
401
402 struct rfkill *rfkill;
403
404 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
405
406 __s8 adv_tx_power;
407 __u8 adv_data[HCI_MAX_AD_LENGTH];
408 __u8 adv_data_len;
409 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
410 __u8 scan_rsp_data_len;
411
412 struct list_head adv_instances;
413 unsigned int adv_instance_cnt;
414 __u8 cur_adv_instance;
415 __u16 adv_instance_timeout;
416 struct delayed_work adv_instance_expire;
417
418 __u8 irk[16];
419 __u32 rpa_timeout;
420 struct delayed_work rpa_expired;
421 bdaddr_t rpa;
422
423 #if IS_ENABLED(CONFIG_BT_LEDS)
424 struct led_trigger *power_led;
425 #endif
426
427 int (*open)(struct hci_dev *hdev);
428 int (*close)(struct hci_dev *hdev);
429 int (*flush)(struct hci_dev *hdev);
430 int (*setup)(struct hci_dev *hdev);
431 int (*shutdown)(struct hci_dev *hdev);
432 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
433 void (*notify)(struct hci_dev *hdev, unsigned int evt);
434 void (*hw_error)(struct hci_dev *hdev, u8 code);
435 int (*post_init)(struct hci_dev *hdev);
436 int (*set_diag)(struct hci_dev *hdev, bool enable);
437 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
438 };
439
440 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
441
442 struct hci_conn {
443 struct list_head list;
444
445 atomic_t refcnt;
446
447 bdaddr_t dst;
448 __u8 dst_type;
449 bdaddr_t src;
450 __u8 src_type;
451 bdaddr_t init_addr;
452 __u8 init_addr_type;
453 bdaddr_t resp_addr;
454 __u8 resp_addr_type;
455 __u16 handle;
456 __u16 state;
457 __u8 mode;
458 __u8 type;
459 __u8 role;
460 bool out;
461 __u8 attempt;
462 __u8 dev_class[3];
463 __u8 features[HCI_MAX_PAGES][8];
464 __u16 pkt_type;
465 __u16 link_policy;
466 __u8 key_type;
467 __u8 auth_type;
468 __u8 sec_level;
469 __u8 pending_sec_level;
470 __u8 pin_length;
471 __u8 enc_key_size;
472 __u8 io_capability;
473 __u32 passkey_notify;
474 __u8 passkey_entered;
475 __u16 disc_timeout;
476 __u16 conn_timeout;
477 __u16 setting;
478 __u16 le_conn_min_interval;
479 __u16 le_conn_max_interval;
480 __u16 le_conn_interval;
481 __u16 le_conn_latency;
482 __u16 le_supv_timeout;
483 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
484 __u8 le_adv_data_len;
485 __s8 rssi;
486 __s8 tx_power;
487 __s8 max_tx_power;
488 unsigned long flags;
489
490 __u32 clock;
491 __u16 clock_accuracy;
492
493 unsigned long conn_info_timestamp;
494
495 __u8 remote_cap;
496 __u8 remote_auth;
497 __u8 remote_id;
498
499 unsigned int sent;
500
501 struct sk_buff_head data_q;
502 struct list_head chan_list;
503
504 struct delayed_work disc_work;
505 struct delayed_work auto_accept_work;
506 struct delayed_work idle_work;
507 struct delayed_work le_conn_timeout;
508 struct work_struct le_scan_cleanup;
509
510 struct device dev;
511 struct dentry *debugfs;
512
513 struct hci_dev *hdev;
514 void *l2cap_data;
515 void *sco_data;
516 struct amp_mgr *amp_mgr;
517
518 struct hci_conn *link;
519
520 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
521 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
522 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
523 };
524
525 struct hci_chan {
526 struct list_head list;
527 __u16 handle;
528 struct hci_conn *conn;
529 struct sk_buff_head data_q;
530 unsigned int sent;
531 __u8 state;
532 bool amp;
533 };
534
535 struct hci_conn_params {
536 struct list_head list;
537 struct list_head action;
538
539 bdaddr_t addr;
540 u8 addr_type;
541
542 u16 conn_min_interval;
543 u16 conn_max_interval;
544 u16 conn_latency;
545 u16 supervision_timeout;
546
547 enum {
548 HCI_AUTO_CONN_DISABLED,
549 HCI_AUTO_CONN_REPORT,
550 HCI_AUTO_CONN_DIRECT,
551 HCI_AUTO_CONN_ALWAYS,
552 HCI_AUTO_CONN_LINK_LOSS,
553 HCI_AUTO_CONN_EXPLICIT,
554 } auto_connect;
555
556 struct hci_conn *conn;
557 bool explicit_connect;
558 };
559
560 extern struct list_head hci_dev_list;
561 extern struct list_head hci_cb_list;
562 extern rwlock_t hci_dev_list_lock;
563 extern struct mutex hci_cb_list_lock;
564
565 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
566 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
567 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
568 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
569 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
570 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
571 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
572
573 #define hci_dev_clear_volatile_flags(hdev) \
574 do { \
575 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
576 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
577 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
578 } while (0)
579
580 /* ----- HCI interface to upper protocols ----- */
581 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
582 int l2cap_disconn_ind(struct hci_conn *hcon);
583 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
584
585 #if IS_ENABLED(CONFIG_BT_BREDR)
586 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
587 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
588 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)589 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
590 __u8 *flags)
591 {
592 return 0;
593 }
594
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)595 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
596 {
597 }
598 #endif
599
600 /* ----- Inquiry cache ----- */
601 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
602 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
603
discovery_init(struct hci_dev * hdev)604 static inline void discovery_init(struct hci_dev *hdev)
605 {
606 hdev->discovery.state = DISCOVERY_STOPPED;
607 INIT_LIST_HEAD(&hdev->discovery.all);
608 INIT_LIST_HEAD(&hdev->discovery.unknown);
609 INIT_LIST_HEAD(&hdev->discovery.resolve);
610 hdev->discovery.report_invalid_rssi = true;
611 hdev->discovery.rssi = HCI_RSSI_INVALID;
612 }
613
hci_discovery_filter_clear(struct hci_dev * hdev)614 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
615 {
616 hdev->discovery.result_filtering = false;
617 hdev->discovery.report_invalid_rssi = true;
618 hdev->discovery.rssi = HCI_RSSI_INVALID;
619 hdev->discovery.uuid_count = 0;
620 kfree(hdev->discovery.uuids);
621 hdev->discovery.uuids = NULL;
622 hdev->discovery.scan_start = 0;
623 hdev->discovery.scan_duration = 0;
624 }
625
626 bool hci_discovery_active(struct hci_dev *hdev);
627
628 void hci_discovery_set_state(struct hci_dev *hdev, int state);
629
inquiry_cache_empty(struct hci_dev * hdev)630 static inline int inquiry_cache_empty(struct hci_dev *hdev)
631 {
632 return list_empty(&hdev->discovery.all);
633 }
634
inquiry_cache_age(struct hci_dev * hdev)635 static inline long inquiry_cache_age(struct hci_dev *hdev)
636 {
637 struct discovery_state *c = &hdev->discovery;
638 return jiffies - c->timestamp;
639 }
640
inquiry_entry_age(struct inquiry_entry * e)641 static inline long inquiry_entry_age(struct inquiry_entry *e)
642 {
643 return jiffies - e->timestamp;
644 }
645
646 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
647 bdaddr_t *bdaddr);
648 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
649 bdaddr_t *bdaddr);
650 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
651 bdaddr_t *bdaddr,
652 int state);
653 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
654 struct inquiry_entry *ie);
655 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
656 bool name_known);
657 void hci_inquiry_cache_flush(struct hci_dev *hdev);
658
659 /* ----- HCI Connections ----- */
660 enum {
661 HCI_CONN_AUTH_PEND,
662 HCI_CONN_REAUTH_PEND,
663 HCI_CONN_ENCRYPT_PEND,
664 HCI_CONN_RSWITCH_PEND,
665 HCI_CONN_MODE_CHANGE_PEND,
666 HCI_CONN_SCO_SETUP_PEND,
667 HCI_CONN_MGMT_CONNECTED,
668 HCI_CONN_SSP_ENABLED,
669 HCI_CONN_SC_ENABLED,
670 HCI_CONN_AES_CCM,
671 HCI_CONN_POWER_SAVE,
672 HCI_CONN_FLUSH_KEY,
673 HCI_CONN_ENCRYPT,
674 HCI_CONN_AUTH,
675 HCI_CONN_SECURE,
676 HCI_CONN_FIPS,
677 HCI_CONN_STK_ENCRYPT,
678 HCI_CONN_AUTH_INITIATOR,
679 HCI_CONN_DROP,
680 HCI_CONN_PARAM_REMOVAL_PEND,
681 HCI_CONN_NEW_LINK_KEY,
682 HCI_CONN_SCANNING,
683 HCI_CONN_AUTH_FAILURE,
684 };
685
hci_conn_ssp_enabled(struct hci_conn * conn)686 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
687 {
688 struct hci_dev *hdev = conn->hdev;
689 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
690 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
691 }
692
hci_conn_sc_enabled(struct hci_conn * conn)693 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
694 {
695 struct hci_dev *hdev = conn->hdev;
696 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
697 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
698 }
699
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)700 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
701 {
702 struct hci_conn_hash *h = &hdev->conn_hash;
703 list_add_rcu(&c->list, &h->list);
704 switch (c->type) {
705 case ACL_LINK:
706 h->acl_num++;
707 break;
708 case AMP_LINK:
709 h->amp_num++;
710 break;
711 case LE_LINK:
712 h->le_num++;
713 if (c->role == HCI_ROLE_SLAVE)
714 h->le_num_slave++;
715 break;
716 case SCO_LINK:
717 case ESCO_LINK:
718 h->sco_num++;
719 break;
720 }
721 }
722
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)723 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
724 {
725 struct hci_conn_hash *h = &hdev->conn_hash;
726
727 list_del_rcu(&c->list);
728 synchronize_rcu();
729
730 switch (c->type) {
731 case ACL_LINK:
732 h->acl_num--;
733 break;
734 case AMP_LINK:
735 h->amp_num--;
736 break;
737 case LE_LINK:
738 h->le_num--;
739 if (c->role == HCI_ROLE_SLAVE)
740 h->le_num_slave--;
741 break;
742 case SCO_LINK:
743 case ESCO_LINK:
744 h->sco_num--;
745 break;
746 }
747 }
748
hci_conn_num(struct hci_dev * hdev,__u8 type)749 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
750 {
751 struct hci_conn_hash *h = &hdev->conn_hash;
752 switch (type) {
753 case ACL_LINK:
754 return h->acl_num;
755 case AMP_LINK:
756 return h->amp_num;
757 case LE_LINK:
758 return h->le_num;
759 case SCO_LINK:
760 case ESCO_LINK:
761 return h->sco_num;
762 default:
763 return 0;
764 }
765 }
766
hci_conn_count(struct hci_dev * hdev)767 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
768 {
769 struct hci_conn_hash *c = &hdev->conn_hash;
770
771 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
772 }
773
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)774 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
775 {
776 struct hci_conn_hash *h = &hdev->conn_hash;
777 struct hci_conn *c;
778 __u8 type = INVALID_LINK;
779
780 rcu_read_lock();
781
782 list_for_each_entry_rcu(c, &h->list, list) {
783 if (c->handle == handle) {
784 type = c->type;
785 break;
786 }
787 }
788
789 rcu_read_unlock();
790
791 return type;
792 }
793
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)794 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
795 __u16 handle)
796 {
797 struct hci_conn_hash *h = &hdev->conn_hash;
798 struct hci_conn *c;
799
800 rcu_read_lock();
801
802 list_for_each_entry_rcu(c, &h->list, list) {
803 if (c->handle == handle) {
804 rcu_read_unlock();
805 return c;
806 }
807 }
808 rcu_read_unlock();
809
810 return NULL;
811 }
812
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)813 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
814 __u8 type, bdaddr_t *ba)
815 {
816 struct hci_conn_hash *h = &hdev->conn_hash;
817 struct hci_conn *c;
818
819 rcu_read_lock();
820
821 list_for_each_entry_rcu(c, &h->list, list) {
822 if (c->type == type && !bacmp(&c->dst, ba)) {
823 rcu_read_unlock();
824 return c;
825 }
826 }
827
828 rcu_read_unlock();
829
830 return NULL;
831 }
832
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)833 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
834 bdaddr_t *ba,
835 __u8 ba_type)
836 {
837 struct hci_conn_hash *h = &hdev->conn_hash;
838 struct hci_conn *c;
839
840 rcu_read_lock();
841
842 list_for_each_entry_rcu(c, &h->list, list) {
843 if (c->type != LE_LINK)
844 continue;
845
846 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
847 rcu_read_unlock();
848 return c;
849 }
850 }
851
852 rcu_read_unlock();
853
854 return NULL;
855 }
856
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)857 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
858 __u8 type, __u16 state)
859 {
860 struct hci_conn_hash *h = &hdev->conn_hash;
861 struct hci_conn *c;
862
863 rcu_read_lock();
864
865 list_for_each_entry_rcu(c, &h->list, list) {
866 if (c->type == type && c->state == state) {
867 rcu_read_unlock();
868 return c;
869 }
870 }
871
872 rcu_read_unlock();
873
874 return NULL;
875 }
876
hci_lookup_le_connect(struct hci_dev * hdev)877 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
878 {
879 struct hci_conn_hash *h = &hdev->conn_hash;
880 struct hci_conn *c;
881
882 rcu_read_lock();
883
884 list_for_each_entry_rcu(c, &h->list, list) {
885 if (c->type == LE_LINK && c->state == BT_CONNECT &&
886 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
887 rcu_read_unlock();
888 return c;
889 }
890 }
891
892 rcu_read_unlock();
893
894 return NULL;
895 }
896
897 int hci_disconnect(struct hci_conn *conn, __u8 reason);
898 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
899 void hci_sco_setup(struct hci_conn *conn, __u8 status);
900
901 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
902 u8 role);
903 int hci_conn_del(struct hci_conn *conn);
904 void hci_conn_hash_flush(struct hci_dev *hdev);
905 void hci_conn_check_pending(struct hci_dev *hdev);
906
907 struct hci_chan *hci_chan_create(struct hci_conn *conn);
908 void hci_chan_del(struct hci_chan *chan);
909 void hci_chan_list_flush(struct hci_conn *conn);
910 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
911
912 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
913 u8 dst_type, u8 sec_level,
914 u16 conn_timeout);
915 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
916 u8 dst_type, u8 sec_level, u16 conn_timeout,
917 u8 role, bdaddr_t *direct_rpa);
918 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
919 u8 sec_level, u8 auth_type);
920 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
921 __u16 setting);
922 int hci_conn_check_link_mode(struct hci_conn *conn);
923 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
924 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
925 bool initiator);
926 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
927
928 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
929
930 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
931
932 /*
933 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
934 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
935 * working or anything else. They just guarantee that the object is available
936 * and can be dereferenced. So you can use its locks, local variables and any
937 * other constant data.
938 * Before accessing runtime data, you _must_ lock the object and then check that
939 * it is still running. As soon as you release the locks, the connection might
940 * get dropped, though.
941 *
942 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
943 * how long the underlying connection is held. So every channel that runs on the
944 * hci_conn object calls this to prevent the connection from disappearing. As
945 * long as you hold a device, you must also guarantee that you have a valid
946 * reference to the device via hci_conn_get() (or the initial reference from
947 * hci_conn_add()).
948 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
949 * break because nobody cares for that. But this means, we cannot use
950 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
951 */
952
hci_conn_get(struct hci_conn * conn)953 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
954 {
955 get_device(&conn->dev);
956 return conn;
957 }
958
hci_conn_put(struct hci_conn * conn)959 static inline void hci_conn_put(struct hci_conn *conn)
960 {
961 put_device(&conn->dev);
962 }
963
hci_conn_hold(struct hci_conn * conn)964 static inline void hci_conn_hold(struct hci_conn *conn)
965 {
966 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
967
968 atomic_inc(&conn->refcnt);
969 cancel_delayed_work(&conn->disc_work);
970 }
971
hci_conn_drop(struct hci_conn * conn)972 static inline void hci_conn_drop(struct hci_conn *conn)
973 {
974 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
975
976 if (atomic_dec_and_test(&conn->refcnt)) {
977 unsigned long timeo;
978
979 switch (conn->type) {
980 case ACL_LINK:
981 case LE_LINK:
982 cancel_delayed_work(&conn->idle_work);
983 if (conn->state == BT_CONNECTED) {
984 timeo = conn->disc_timeout;
985 if (!conn->out)
986 timeo *= 2;
987 } else {
988 timeo = 0;
989 }
990 break;
991
992 case AMP_LINK:
993 timeo = conn->disc_timeout;
994 break;
995
996 default:
997 timeo = 0;
998 break;
999 }
1000
1001 cancel_delayed_work(&conn->disc_work);
1002 queue_delayed_work(conn->hdev->workqueue,
1003 &conn->disc_work, timeo);
1004 }
1005 }
1006
1007 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1008 static inline void hci_dev_put(struct hci_dev *d)
1009 {
1010 BT_DBG("%s orig refcnt %d", d->name,
1011 kref_read(&d->dev.kobj.kref));
1012
1013 put_device(&d->dev);
1014 }
1015
hci_dev_hold(struct hci_dev * d)1016 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1017 {
1018 BT_DBG("%s orig refcnt %d", d->name,
1019 kref_read(&d->dev.kobj.kref));
1020
1021 get_device(&d->dev);
1022 return d;
1023 }
1024
1025 #define hci_dev_lock(d) mutex_lock(&d->lock)
1026 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1027
1028 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1029 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1030
hci_get_drvdata(struct hci_dev * hdev)1031 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1032 {
1033 return dev_get_drvdata(&hdev->dev);
1034 }
1035
hci_set_drvdata(struct hci_dev * hdev,void * data)1036 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1037 {
1038 dev_set_drvdata(&hdev->dev, data);
1039 }
1040
1041 struct hci_dev *hci_dev_get(int index);
1042 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1043
1044 struct hci_dev *hci_alloc_dev(void);
1045 void hci_free_dev(struct hci_dev *hdev);
1046 int hci_register_dev(struct hci_dev *hdev);
1047 void hci_unregister_dev(struct hci_dev *hdev);
1048 void hci_cleanup_dev(struct hci_dev *hdev);
1049 int hci_suspend_dev(struct hci_dev *hdev);
1050 int hci_resume_dev(struct hci_dev *hdev);
1051 int hci_reset_dev(struct hci_dev *hdev);
1052 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1053 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1054 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1055 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1056 int hci_dev_open(__u16 dev);
1057 int hci_dev_close(__u16 dev);
1058 int hci_dev_do_close(struct hci_dev *hdev);
1059 int hci_dev_reset(__u16 dev);
1060 int hci_dev_reset_stat(__u16 dev);
1061 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1062 int hci_get_dev_list(void __user *arg);
1063 int hci_get_dev_info(void __user *arg);
1064 int hci_get_conn_list(void __user *arg);
1065 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1066 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1067 int hci_inquiry(void __user *arg);
1068
1069 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1070 bdaddr_t *bdaddr, u8 type);
1071 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1072 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1073 void hci_bdaddr_list_clear(struct list_head *list);
1074
1075 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1076 bdaddr_t *addr, u8 addr_type);
1077 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1078 bdaddr_t *addr, u8 addr_type);
1079 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1080 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1081
1082 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1083 bdaddr_t *addr,
1084 u8 addr_type);
1085
1086 void hci_uuids_clear(struct hci_dev *hdev);
1087
1088 void hci_link_keys_clear(struct hci_dev *hdev);
1089 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1090 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1091 bdaddr_t *bdaddr, u8 *val, u8 type,
1092 u8 pin_len, bool *persistent);
1093 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 addr_type, u8 type, u8 authenticated,
1095 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1096 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 u8 addr_type, u8 role);
1098 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1099 void hci_smp_ltks_clear(struct hci_dev *hdev);
1100 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1101
1102 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1103 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1104 u8 addr_type);
1105 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1106 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1107 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1108 void hci_smp_irks_clear(struct hci_dev *hdev);
1109
1110 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1111
1112 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1113 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1114 bdaddr_t *bdaddr, u8 bdaddr_type);
1115 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1117 u8 *hash256, u8 *rand256);
1118 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1119 u8 bdaddr_type);
1120
1121 void hci_adv_instances_clear(struct hci_dev *hdev);
1122 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1123 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1124 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1125 u16 adv_data_len, u8 *adv_data,
1126 u16 scan_rsp_len, u8 *scan_rsp_data,
1127 u16 timeout, u16 duration);
1128 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1129 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1130
1131 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1132
1133 void hci_init_sysfs(struct hci_dev *hdev);
1134 void hci_conn_init_sysfs(struct hci_conn *conn);
1135 void hci_conn_add_sysfs(struct hci_conn *conn);
1136 void hci_conn_del_sysfs(struct hci_conn *conn);
1137
1138 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1139
1140 /* ----- LMP capabilities ----- */
1141 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1142 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1143 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1144 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1145 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1146 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1147 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1148 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1149 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1150 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1151 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1152 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1153 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1154 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1155 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1156 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1157 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1158 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1159 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1160 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1161 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1162 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1163 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1164
1165 /* ----- Extended LMP capabilities ----- */
1166 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1167 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1168 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1169 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1170 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1171 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1172
1173 /* ----- Host capabilities ----- */
1174 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1175 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1176 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1177 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1178
1179 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1180 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1181 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1182 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1183
1184 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1185 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1186
1187 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1188 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1189
1190 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1191 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1192
1193 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1194 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1195 ((dev)->commands[37] & 0x40))
1196 /* Use ext create connection if command is supported */
1197 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1198
1199 /* Extended advertising support */
1200 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1201
1202 /* ----- HCI protocols ----- */
1203 #define HCI_PROTO_DEFER 0x01
1204
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1205 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1206 __u8 type, __u8 *flags)
1207 {
1208 switch (type) {
1209 case ACL_LINK:
1210 return l2cap_connect_ind(hdev, bdaddr);
1211
1212 case SCO_LINK:
1213 case ESCO_LINK:
1214 return sco_connect_ind(hdev, bdaddr, flags);
1215
1216 default:
1217 BT_ERR("unknown link type %d", type);
1218 return -EINVAL;
1219 }
1220 }
1221
hci_proto_disconn_ind(struct hci_conn * conn)1222 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1223 {
1224 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1225 return HCI_ERROR_REMOTE_USER_TERM;
1226
1227 return l2cap_disconn_ind(conn);
1228 }
1229
1230 /* ----- HCI callbacks ----- */
1231 struct hci_cb {
1232 struct list_head list;
1233
1234 char *name;
1235
1236 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1237 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1238 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1239 __u8 encrypt);
1240 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1241 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1242 };
1243
hci_connect_cfm(struct hci_conn * conn,__u8 status)1244 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1245 {
1246 struct hci_cb *cb;
1247
1248 mutex_lock(&hci_cb_list_lock);
1249 list_for_each_entry(cb, &hci_cb_list, list) {
1250 if (cb->connect_cfm)
1251 cb->connect_cfm(conn, status);
1252 }
1253 mutex_unlock(&hci_cb_list_lock);
1254
1255 if (conn->connect_cfm_cb)
1256 conn->connect_cfm_cb(conn, status);
1257 }
1258
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1259 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1260 {
1261 struct hci_cb *cb;
1262
1263 mutex_lock(&hci_cb_list_lock);
1264 list_for_each_entry(cb, &hci_cb_list, list) {
1265 if (cb->disconn_cfm)
1266 cb->disconn_cfm(conn, reason);
1267 }
1268 mutex_unlock(&hci_cb_list_lock);
1269
1270 if (conn->disconn_cfm_cb)
1271 conn->disconn_cfm_cb(conn, reason);
1272 }
1273
hci_auth_cfm(struct hci_conn * conn,__u8 status)1274 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1275 {
1276 struct hci_cb *cb;
1277 __u8 encrypt;
1278
1279 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1280 return;
1281
1282 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1283
1284 mutex_lock(&hci_cb_list_lock);
1285 list_for_each_entry(cb, &hci_cb_list, list) {
1286 if (cb->security_cfm)
1287 cb->security_cfm(conn, status, encrypt);
1288 }
1289 mutex_unlock(&hci_cb_list_lock);
1290
1291 if (conn->security_cfm_cb)
1292 conn->security_cfm_cb(conn, status);
1293 }
1294
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)1295 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1296 {
1297 struct hci_cb *cb;
1298 __u8 encrypt;
1299
1300 if (conn->state == BT_CONFIG) {
1301 if (!status)
1302 conn->state = BT_CONNECTED;
1303
1304 hci_connect_cfm(conn, status);
1305 hci_conn_drop(conn);
1306 return;
1307 }
1308
1309 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1310 encrypt = 0x00;
1311 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1312 encrypt = 0x02;
1313 else
1314 encrypt = 0x01;
1315
1316 if (!status) {
1317 if (conn->sec_level == BT_SECURITY_SDP)
1318 conn->sec_level = BT_SECURITY_LOW;
1319
1320 if (conn->pending_sec_level > conn->sec_level)
1321 conn->sec_level = conn->pending_sec_level;
1322 }
1323
1324 mutex_lock(&hci_cb_list_lock);
1325 list_for_each_entry(cb, &hci_cb_list, list) {
1326 if (cb->security_cfm)
1327 cb->security_cfm(conn, status, encrypt);
1328 }
1329 mutex_unlock(&hci_cb_list_lock);
1330
1331 if (conn->security_cfm_cb)
1332 conn->security_cfm_cb(conn, status);
1333 }
1334
hci_key_change_cfm(struct hci_conn * conn,__u8 status)1335 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1336 {
1337 struct hci_cb *cb;
1338
1339 mutex_lock(&hci_cb_list_lock);
1340 list_for_each_entry(cb, &hci_cb_list, list) {
1341 if (cb->key_change_cfm)
1342 cb->key_change_cfm(conn, status);
1343 }
1344 mutex_unlock(&hci_cb_list_lock);
1345 }
1346
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)1347 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1348 __u8 role)
1349 {
1350 struct hci_cb *cb;
1351
1352 mutex_lock(&hci_cb_list_lock);
1353 list_for_each_entry(cb, &hci_cb_list, list) {
1354 if (cb->role_switch_cfm)
1355 cb->role_switch_cfm(conn, status, role);
1356 }
1357 mutex_unlock(&hci_cb_list_lock);
1358 }
1359
eir_get_data(u8 * eir,size_t eir_len,u8 type,size_t * data_len)1360 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1361 size_t *data_len)
1362 {
1363 size_t parsed = 0;
1364
1365 if (eir_len < 2)
1366 return NULL;
1367
1368 while (parsed < eir_len - 1) {
1369 u8 field_len = eir[0];
1370
1371 if (field_len == 0)
1372 break;
1373
1374 parsed += field_len + 1;
1375
1376 if (parsed > eir_len)
1377 break;
1378
1379 if (eir[1] != type) {
1380 eir += field_len + 1;
1381 continue;
1382 }
1383
1384 /* Zero length data */
1385 if (field_len == 1)
1386 return NULL;
1387
1388 if (data_len)
1389 *data_len = field_len - 1;
1390
1391 return &eir[2];
1392 }
1393
1394 return NULL;
1395 }
1396
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)1397 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1398 {
1399 if (addr_type != ADDR_LE_DEV_RANDOM)
1400 return false;
1401
1402 if ((bdaddr->b[5] & 0xc0) == 0x40)
1403 return true;
1404
1405 return false;
1406 }
1407
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)1408 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1409 {
1410 if (addr_type == ADDR_LE_DEV_PUBLIC)
1411 return true;
1412
1413 /* Check for Random Static address type */
1414 if ((addr->b[5] & 0xc0) == 0xc0)
1415 return true;
1416
1417 return false;
1418 }
1419
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)1420 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1421 bdaddr_t *bdaddr, u8 addr_type)
1422 {
1423 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1424 return NULL;
1425
1426 return hci_find_irk_by_rpa(hdev, bdaddr);
1427 }
1428
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)1429 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1430 u16 to_multiplier)
1431 {
1432 u16 max_latency;
1433
1434 if (min > max || min < 6 || max > 3200)
1435 return -EINVAL;
1436
1437 if (to_multiplier < 10 || to_multiplier > 3200)
1438 return -EINVAL;
1439
1440 if (max >= to_multiplier * 8)
1441 return -EINVAL;
1442
1443 max_latency = (to_multiplier * 4 / max) - 1;
1444 if (latency > 499 || latency > max_latency)
1445 return -EINVAL;
1446
1447 return 0;
1448 }
1449
1450 int hci_register_cb(struct hci_cb *hcb);
1451 int hci_unregister_cb(struct hci_cb *hcb);
1452
1453 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1454 const void *param, u32 timeout);
1455 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1456 const void *param, u8 event, u32 timeout);
1457 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1458 const void *param);
1459
1460 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1461 const void *param);
1462 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1463 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1464
1465 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1466
1467 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1468 const void *param, u32 timeout);
1469
1470 /* ----- HCI Sockets ----- */
1471 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1472 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1473 int flag, struct sock *skip_sk);
1474 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1475 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1476 void *data, u16 data_len, ktime_t tstamp,
1477 int flag, struct sock *skip_sk);
1478
1479 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1480
1481 #define HCI_MGMT_VAR_LEN BIT(0)
1482 #define HCI_MGMT_NO_HDEV BIT(1)
1483 #define HCI_MGMT_UNTRUSTED BIT(2)
1484 #define HCI_MGMT_UNCONFIGURED BIT(3)
1485
1486 struct hci_mgmt_handler {
1487 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1488 u16 data_len);
1489 size_t data_len;
1490 unsigned long flags;
1491 };
1492
1493 struct hci_mgmt_chan {
1494 struct list_head list;
1495 unsigned short channel;
1496 size_t handler_count;
1497 const struct hci_mgmt_handler *handlers;
1498 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1499 };
1500
1501 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1502 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1503
1504 /* Management interface */
1505 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1506 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1507 BIT(BDADDR_LE_RANDOM))
1508 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1509 BIT(BDADDR_LE_PUBLIC) | \
1510 BIT(BDADDR_LE_RANDOM))
1511
1512 /* These LE scan and inquiry parameters were chosen according to LE General
1513 * Discovery Procedure specification.
1514 */
1515 #define DISCOV_LE_SCAN_WIN 0x12
1516 #define DISCOV_LE_SCAN_INT 0x12
1517 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1518 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1519 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1520 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1521 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1522
1523 void mgmt_fill_version_info(void *ver);
1524 int mgmt_new_settings(struct hci_dev *hdev);
1525 void mgmt_index_added(struct hci_dev *hdev);
1526 void mgmt_index_removed(struct hci_dev *hdev);
1527 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1528 void mgmt_power_on(struct hci_dev *hdev, int err);
1529 void __mgmt_power_off(struct hci_dev *hdev);
1530 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1531 bool persistent);
1532 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1533 u32 flags, u8 *name, u8 name_len);
1534 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535 u8 link_type, u8 addr_type, u8 reason,
1536 bool mgmt_connected);
1537 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1538 u8 link_type, u8 addr_type, u8 status);
1539 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1540 u8 addr_type, u8 status);
1541 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1542 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1543 u8 status);
1544 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1545 u8 status);
1546 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1547 u8 link_type, u8 addr_type, u32 value,
1548 u8 confirm_hint);
1549 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1550 u8 link_type, u8 addr_type, u8 status);
1551 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1552 u8 link_type, u8 addr_type, u8 status);
1553 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 link_type, u8 addr_type);
1555 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1556 u8 link_type, u8 addr_type, u8 status);
1557 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1558 u8 link_type, u8 addr_type, u8 status);
1559 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1560 u8 link_type, u8 addr_type, u32 passkey,
1561 u8 entered);
1562 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1563 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1564 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1565 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1566 u8 status);
1567 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1568 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1569 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1570 void 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);
1573 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1574 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1575 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1576 bool mgmt_powering_down(struct hci_dev *hdev);
1577 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1578 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1579 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1580 bool persistent);
1581 void 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);
1584 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1585 bool mgmt_get_connectable(struct hci_dev *hdev);
1586 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1587 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1588 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1589 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1590 u8 instance);
1591 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1592 u8 instance);
1593 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1594
1595 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1596 u16 to_multiplier);
1597 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1598 __u8 ltk[16], __u8 key_size);
1599
1600 void 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 */
1608