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Merge remote-tracking branch 'omap_dss2/for-next'
[deliverable/linux.git] / include / net / bluetooth / hci_core.h
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 #ifndef __HCI_CORE_H
26 #define __HCI_CORE_H
27
28 #include <linux/leds.h>
29 #include <net/bluetooth/hci.h>
30 #include <net/bluetooth/hci_sock.h>
31
32 /* HCI priority */
33 #define HCI_PRIO_MAX 7
34
35 /* HCI Core structures */
36 struct inquiry_data {
37 bdaddr_t bdaddr;
38 __u8 pscan_rep_mode;
39 __u8 pscan_period_mode;
40 __u8 pscan_mode;
41 __u8 dev_class[3];
42 __le16 clock_offset;
43 __s8 rssi;
44 __u8 ssp_mode;
45 };
46
47 struct inquiry_entry {
48 struct list_head all; /* inq_cache.all */
49 struct list_head list; /* unknown or resolve */
50 enum {
51 NAME_NOT_KNOWN,
52 NAME_NEEDED,
53 NAME_PENDING,
54 NAME_KNOWN,
55 } name_state;
56 __u32 timestamp;
57 struct inquiry_data data;
58 };
59
60 struct discovery_state {
61 int type;
62 enum {
63 DISCOVERY_STOPPED,
64 DISCOVERY_STARTING,
65 DISCOVERY_FINDING,
66 DISCOVERY_RESOLVING,
67 DISCOVERY_STOPPING,
68 } state;
69 struct list_head all; /* All devices found during inquiry */
70 struct list_head unknown; /* Name state not known */
71 struct list_head resolve; /* Name needs to be resolved */
72 __u32 timestamp;
73 bdaddr_t last_adv_addr;
74 u8 last_adv_addr_type;
75 s8 last_adv_rssi;
76 u32 last_adv_flags;
77 u8 last_adv_data[HCI_MAX_AD_LENGTH];
78 u8 last_adv_data_len;
79 bool report_invalid_rssi;
80 bool result_filtering;
81 bool limited;
82 s8 rssi;
83 u16 uuid_count;
84 u8 (*uuids)[16];
85 unsigned long scan_start;
86 unsigned long scan_duration;
87 };
88
89 struct hci_conn_hash {
90 struct list_head list;
91 unsigned int acl_num;
92 unsigned int amp_num;
93 unsigned int sco_num;
94 unsigned int le_num;
95 unsigned int le_num_slave;
96 };
97
98 struct bdaddr_list {
99 struct list_head list;
100 bdaddr_t bdaddr;
101 u8 bdaddr_type;
102 };
103
104 struct bt_uuid {
105 struct list_head list;
106 u8 uuid[16];
107 u8 size;
108 u8 svc_hint;
109 };
110
111 struct smp_csrk {
112 bdaddr_t bdaddr;
113 u8 bdaddr_type;
114 u8 type;
115 u8 val[16];
116 };
117
118 struct smp_ltk {
119 struct list_head list;
120 struct rcu_head rcu;
121 bdaddr_t bdaddr;
122 u8 bdaddr_type;
123 u8 authenticated;
124 u8 type;
125 u8 enc_size;
126 __le16 ediv;
127 __le64 rand;
128 u8 val[16];
129 };
130
131 struct smp_irk {
132 struct list_head list;
133 struct rcu_head rcu;
134 bdaddr_t rpa;
135 bdaddr_t bdaddr;
136 u8 addr_type;
137 u8 val[16];
138 };
139
140 struct link_key {
141 struct list_head list;
142 struct rcu_head rcu;
143 bdaddr_t bdaddr;
144 u8 type;
145 u8 val[HCI_LINK_KEY_SIZE];
146 u8 pin_len;
147 };
148
149 struct oob_data {
150 struct list_head list;
151 bdaddr_t bdaddr;
152 u8 bdaddr_type;
153 u8 present;
154 u8 hash192[16];
155 u8 rand192[16];
156 u8 hash256[16];
157 u8 rand256[16];
158 };
159
160 struct adv_info {
161 struct list_head list;
162 bool pending;
163 __u8 instance;
164 __u32 flags;
165 __u16 timeout;
166 __u16 remaining_time;
167 __u16 duration;
168 __u16 adv_data_len;
169 __u8 adv_data[HCI_MAX_AD_LENGTH];
170 __u16 scan_rsp_len;
171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
172 };
173
174 #define HCI_MAX_ADV_INSTANCES 5
175 #define HCI_DEFAULT_ADV_DURATION 2
176
177 #define HCI_MAX_SHORT_NAME_LENGTH 10
178
179 /* Default LE RPA expiry time, 15 minutes */
180 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
181
182 /* Default min/max age of connection information (1s/3s) */
183 #define DEFAULT_CONN_INFO_MIN_AGE 1000
184 #define DEFAULT_CONN_INFO_MAX_AGE 3000
185
186 struct amp_assoc {
187 __u16 len;
188 __u16 offset;
189 __u16 rem_len;
190 __u16 len_so_far;
191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
192 };
193
194 #define HCI_MAX_PAGES 3
195
196 struct hci_dev {
197 struct list_head list;
198 struct mutex lock;
199
200 char name[8];
201 unsigned long flags;
202 __u16 id;
203 __u8 bus;
204 __u8 dev_type;
205 bdaddr_t bdaddr;
206 bdaddr_t setup_addr;
207 bdaddr_t public_addr;
208 bdaddr_t random_addr;
209 bdaddr_t static_addr;
210 __u8 adv_addr_type;
211 __u8 dev_name[HCI_MAX_NAME_LENGTH];
212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
213 __u8 eir[HCI_MAX_EIR_LENGTH];
214 __u8 dev_class[3];
215 __u8 major_class;
216 __u8 minor_class;
217 __u8 max_page;
218 __u8 features[HCI_MAX_PAGES][8];
219 __u8 le_features[8];
220 __u8 le_white_list_size;
221 __u8 le_states[8];
222 __u8 commands[64];
223 __u8 hci_ver;
224 __u16 hci_rev;
225 __u8 lmp_ver;
226 __u16 manufacturer;
227 __u16 lmp_subver;
228 __u16 voice_setting;
229 __u8 num_iac;
230 __u8 stored_max_keys;
231 __u8 stored_num_keys;
232 __u8 io_capability;
233 __s8 inq_tx_power;
234 __u16 page_scan_interval;
235 __u16 page_scan_window;
236 __u8 page_scan_type;
237 __u8 le_adv_channel_map;
238 __u16 le_adv_min_interval;
239 __u16 le_adv_max_interval;
240 __u8 le_scan_type;
241 __u16 le_scan_interval;
242 __u16 le_scan_window;
243 __u16 le_conn_min_interval;
244 __u16 le_conn_max_interval;
245 __u16 le_conn_latency;
246 __u16 le_supv_timeout;
247 __u16 le_def_tx_len;
248 __u16 le_def_tx_time;
249 __u16 le_max_tx_len;
250 __u16 le_max_tx_time;
251 __u16 le_max_rx_len;
252 __u16 le_max_rx_time;
253 __u16 discov_interleaved_timeout;
254 __u16 conn_info_min_age;
255 __u16 conn_info_max_age;
256 __u8 ssp_debug_mode;
257 __u8 hw_error_code;
258 __u32 clock;
259
260 __u16 devid_source;
261 __u16 devid_vendor;
262 __u16 devid_product;
263 __u16 devid_version;
264
265 __u16 pkt_type;
266 __u16 esco_type;
267 __u16 link_policy;
268 __u16 link_mode;
269
270 __u32 idle_timeout;
271 __u16 sniff_min_interval;
272 __u16 sniff_max_interval;
273
274 __u8 amp_status;
275 __u32 amp_total_bw;
276 __u32 amp_max_bw;
277 __u32 amp_min_latency;
278 __u32 amp_max_pdu;
279 __u8 amp_type;
280 __u16 amp_pal_cap;
281 __u16 amp_assoc_size;
282 __u32 amp_max_flush_to;
283 __u32 amp_be_flush_to;
284
285 struct amp_assoc loc_assoc;
286
287 __u8 flow_ctl_mode;
288
289 unsigned int auto_accept_delay;
290
291 unsigned long quirks;
292
293 atomic_t cmd_cnt;
294 unsigned int acl_cnt;
295 unsigned int sco_cnt;
296 unsigned int le_cnt;
297
298 unsigned int acl_mtu;
299 unsigned int sco_mtu;
300 unsigned int le_mtu;
301 unsigned int acl_pkts;
302 unsigned int sco_pkts;
303 unsigned int le_pkts;
304
305 __u16 block_len;
306 __u16 block_mtu;
307 __u16 num_blocks;
308 __u16 block_cnt;
309
310 unsigned long acl_last_tx;
311 unsigned long sco_last_tx;
312 unsigned long le_last_tx;
313
314 struct workqueue_struct *workqueue;
315 struct workqueue_struct *req_workqueue;
316
317 struct work_struct power_on;
318 struct delayed_work power_off;
319 struct work_struct error_reset;
320
321 __u16 discov_timeout;
322 struct delayed_work discov_off;
323
324 struct delayed_work service_cache;
325
326 struct delayed_work cmd_timer;
327
328 struct work_struct rx_work;
329 struct work_struct cmd_work;
330 struct work_struct tx_work;
331
332 struct work_struct discov_update;
333 struct work_struct bg_scan_update;
334 struct work_struct scan_update;
335 struct work_struct connectable_update;
336 struct work_struct discoverable_update;
337 struct delayed_work le_scan_disable;
338 struct delayed_work le_scan_restart;
339
340 struct sk_buff_head rx_q;
341 struct sk_buff_head raw_q;
342 struct sk_buff_head cmd_q;
343
344 struct sk_buff *sent_cmd;
345
346 struct mutex req_lock;
347 wait_queue_head_t req_wait_q;
348 __u32 req_status;
349 __u32 req_result;
350 struct sk_buff *req_skb;
351
352 void *smp_data;
353 void *smp_bredr_data;
354
355 struct discovery_state discovery;
356 struct hci_conn_hash conn_hash;
357
358 struct list_head mgmt_pending;
359 struct list_head blacklist;
360 struct list_head whitelist;
361 struct list_head uuids;
362 struct list_head link_keys;
363 struct list_head long_term_keys;
364 struct list_head identity_resolving_keys;
365 struct list_head remote_oob_data;
366 struct list_head le_white_list;
367 struct list_head le_conn_params;
368 struct list_head pend_le_conns;
369 struct list_head pend_le_reports;
370
371 struct hci_dev_stats stat;
372
373 atomic_t promisc;
374
375 const char *hw_info;
376 const char *fw_info;
377 struct dentry *debugfs;
378
379 struct device dev;
380
381 struct rfkill *rfkill;
382
383 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
384
385 __s8 adv_tx_power;
386 __u8 adv_data[HCI_MAX_AD_LENGTH];
387 __u8 adv_data_len;
388 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
389 __u8 scan_rsp_data_len;
390
391 struct list_head adv_instances;
392 unsigned int adv_instance_cnt;
393 __u8 cur_adv_instance;
394 __u16 adv_instance_timeout;
395 struct delayed_work adv_instance_expire;
396
397 __u8 irk[16];
398 __u32 rpa_timeout;
399 struct delayed_work rpa_expired;
400 bdaddr_t rpa;
401
402 #if IS_ENABLED(CONFIG_BT_LEDS)
403 struct led_trigger *power_led;
404 #endif
405
406 int (*open)(struct hci_dev *hdev);
407 int (*close)(struct hci_dev *hdev);
408 int (*flush)(struct hci_dev *hdev);
409 int (*setup)(struct hci_dev *hdev);
410 int (*shutdown)(struct hci_dev *hdev);
411 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
412 void (*notify)(struct hci_dev *hdev, unsigned int evt);
413 void (*hw_error)(struct hci_dev *hdev, u8 code);
414 int (*post_init)(struct hci_dev *hdev);
415 int (*set_diag)(struct hci_dev *hdev, bool enable);
416 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
417 };
418
419 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
420
421 struct hci_conn {
422 struct list_head list;
423
424 atomic_t refcnt;
425
426 bdaddr_t dst;
427 __u8 dst_type;
428 bdaddr_t src;
429 __u8 src_type;
430 bdaddr_t init_addr;
431 __u8 init_addr_type;
432 bdaddr_t resp_addr;
433 __u8 resp_addr_type;
434 __u16 handle;
435 __u16 state;
436 __u8 mode;
437 __u8 type;
438 __u8 role;
439 bool out;
440 __u8 attempt;
441 __u8 dev_class[3];
442 __u8 features[HCI_MAX_PAGES][8];
443 __u16 pkt_type;
444 __u16 link_policy;
445 __u8 key_type;
446 __u8 auth_type;
447 __u8 sec_level;
448 __u8 pending_sec_level;
449 __u8 pin_length;
450 __u8 enc_key_size;
451 __u8 io_capability;
452 __u32 passkey_notify;
453 __u8 passkey_entered;
454 __u16 disc_timeout;
455 __u16 conn_timeout;
456 __u16 setting;
457 __u16 le_conn_min_interval;
458 __u16 le_conn_max_interval;
459 __u16 le_conn_interval;
460 __u16 le_conn_latency;
461 __u16 le_supv_timeout;
462 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
463 __u8 le_adv_data_len;
464 __s8 rssi;
465 __s8 tx_power;
466 __s8 max_tx_power;
467 unsigned long flags;
468
469 __u32 clock;
470 __u16 clock_accuracy;
471
472 unsigned long conn_info_timestamp;
473
474 __u8 remote_cap;
475 __u8 remote_auth;
476 __u8 remote_id;
477
478 unsigned int sent;
479
480 struct sk_buff_head data_q;
481 struct list_head chan_list;
482
483 struct delayed_work disc_work;
484 struct delayed_work auto_accept_work;
485 struct delayed_work idle_work;
486 struct delayed_work le_conn_timeout;
487 struct work_struct le_scan_cleanup;
488
489 struct device dev;
490 struct dentry *debugfs;
491
492 struct hci_dev *hdev;
493 void *l2cap_data;
494 void *sco_data;
495 struct amp_mgr *amp_mgr;
496
497 struct hci_conn *link;
498
499 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
500 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
501 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
502 };
503
504 struct hci_chan {
505 struct list_head list;
506 __u16 handle;
507 struct hci_conn *conn;
508 struct sk_buff_head data_q;
509 unsigned int sent;
510 __u8 state;
511 };
512
513 struct hci_conn_params {
514 struct list_head list;
515 struct list_head action;
516
517 bdaddr_t addr;
518 u8 addr_type;
519
520 u16 conn_min_interval;
521 u16 conn_max_interval;
522 u16 conn_latency;
523 u16 supervision_timeout;
524
525 enum {
526 HCI_AUTO_CONN_DISABLED,
527 HCI_AUTO_CONN_REPORT,
528 HCI_AUTO_CONN_DIRECT,
529 HCI_AUTO_CONN_ALWAYS,
530 HCI_AUTO_CONN_LINK_LOSS,
531 HCI_AUTO_CONN_EXPLICIT,
532 } auto_connect;
533
534 struct hci_conn *conn;
535 bool explicit_connect;
536 };
537
538 extern struct list_head hci_dev_list;
539 extern struct list_head hci_cb_list;
540 extern rwlock_t hci_dev_list_lock;
541 extern struct mutex hci_cb_list_lock;
542
543 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
544 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
545 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
546 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
547 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
548 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
549 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
550
551 #define hci_dev_clear_volatile_flags(hdev) \
552 do { \
553 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
554 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
555 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
556 } while (0)
557
558 /* ----- HCI interface to upper protocols ----- */
559 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
560 int l2cap_disconn_ind(struct hci_conn *hcon);
561 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
562
563 #if IS_ENABLED(CONFIG_BT_BREDR)
564 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
565 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
566 #else
567 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
568 __u8 *flags)
569 {
570 return 0;
571 }
572
573 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
574 {
575 }
576 #endif
577
578 /* ----- Inquiry cache ----- */
579 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
580 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
581
582 static inline void discovery_init(struct hci_dev *hdev)
583 {
584 hdev->discovery.state = DISCOVERY_STOPPED;
585 INIT_LIST_HEAD(&hdev->discovery.all);
586 INIT_LIST_HEAD(&hdev->discovery.unknown);
587 INIT_LIST_HEAD(&hdev->discovery.resolve);
588 hdev->discovery.report_invalid_rssi = true;
589 hdev->discovery.rssi = HCI_RSSI_INVALID;
590 }
591
592 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
593 {
594 hdev->discovery.result_filtering = false;
595 hdev->discovery.report_invalid_rssi = true;
596 hdev->discovery.rssi = HCI_RSSI_INVALID;
597 hdev->discovery.uuid_count = 0;
598 kfree(hdev->discovery.uuids);
599 hdev->discovery.uuids = NULL;
600 hdev->discovery.scan_start = 0;
601 hdev->discovery.scan_duration = 0;
602 }
603
604 bool hci_discovery_active(struct hci_dev *hdev);
605
606 void hci_discovery_set_state(struct hci_dev *hdev, int state);
607
608 static inline int inquiry_cache_empty(struct hci_dev *hdev)
609 {
610 return list_empty(&hdev->discovery.all);
611 }
612
613 static inline long inquiry_cache_age(struct hci_dev *hdev)
614 {
615 struct discovery_state *c = &hdev->discovery;
616 return jiffies - c->timestamp;
617 }
618
619 static inline long inquiry_entry_age(struct inquiry_entry *e)
620 {
621 return jiffies - e->timestamp;
622 }
623
624 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
625 bdaddr_t *bdaddr);
626 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
627 bdaddr_t *bdaddr);
628 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
629 bdaddr_t *bdaddr,
630 int state);
631 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
632 struct inquiry_entry *ie);
633 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
634 bool name_known);
635 void hci_inquiry_cache_flush(struct hci_dev *hdev);
636
637 /* ----- HCI Connections ----- */
638 enum {
639 HCI_CONN_AUTH_PEND,
640 HCI_CONN_REAUTH_PEND,
641 HCI_CONN_ENCRYPT_PEND,
642 HCI_CONN_RSWITCH_PEND,
643 HCI_CONN_MODE_CHANGE_PEND,
644 HCI_CONN_SCO_SETUP_PEND,
645 HCI_CONN_MGMT_CONNECTED,
646 HCI_CONN_SSP_ENABLED,
647 HCI_CONN_SC_ENABLED,
648 HCI_CONN_AES_CCM,
649 HCI_CONN_POWER_SAVE,
650 HCI_CONN_FLUSH_KEY,
651 HCI_CONN_ENCRYPT,
652 HCI_CONN_AUTH,
653 HCI_CONN_SECURE,
654 HCI_CONN_FIPS,
655 HCI_CONN_STK_ENCRYPT,
656 HCI_CONN_AUTH_INITIATOR,
657 HCI_CONN_DROP,
658 HCI_CONN_PARAM_REMOVAL_PEND,
659 HCI_CONN_NEW_LINK_KEY,
660 HCI_CONN_SCANNING,
661 HCI_CONN_AUTH_FAILURE,
662 };
663
664 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
665 {
666 struct hci_dev *hdev = conn->hdev;
667 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
668 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
669 }
670
671 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
672 {
673 struct hci_dev *hdev = conn->hdev;
674 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
675 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
676 }
677
678 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
679 {
680 struct hci_conn_hash *h = &hdev->conn_hash;
681 list_add_rcu(&c->list, &h->list);
682 switch (c->type) {
683 case ACL_LINK:
684 h->acl_num++;
685 break;
686 case AMP_LINK:
687 h->amp_num++;
688 break;
689 case LE_LINK:
690 h->le_num++;
691 if (c->role == HCI_ROLE_SLAVE)
692 h->le_num_slave++;
693 break;
694 case SCO_LINK:
695 case ESCO_LINK:
696 h->sco_num++;
697 break;
698 }
699 }
700
701 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
702 {
703 struct hci_conn_hash *h = &hdev->conn_hash;
704
705 list_del_rcu(&c->list);
706 synchronize_rcu();
707
708 switch (c->type) {
709 case ACL_LINK:
710 h->acl_num--;
711 break;
712 case AMP_LINK:
713 h->amp_num--;
714 break;
715 case LE_LINK:
716 h->le_num--;
717 if (c->role == HCI_ROLE_SLAVE)
718 h->le_num_slave--;
719 break;
720 case SCO_LINK:
721 case ESCO_LINK:
722 h->sco_num--;
723 break;
724 }
725 }
726
727 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
728 {
729 struct hci_conn_hash *h = &hdev->conn_hash;
730 switch (type) {
731 case ACL_LINK:
732 return h->acl_num;
733 case AMP_LINK:
734 return h->amp_num;
735 case LE_LINK:
736 return h->le_num;
737 case SCO_LINK:
738 case ESCO_LINK:
739 return h->sco_num;
740 default:
741 return 0;
742 }
743 }
744
745 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
746 {
747 struct hci_conn_hash *c = &hdev->conn_hash;
748
749 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
750 }
751
752 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
753 {
754 struct hci_conn_hash *h = &hdev->conn_hash;
755 struct hci_conn *c;
756 __u8 type = INVALID_LINK;
757
758 rcu_read_lock();
759
760 list_for_each_entry_rcu(c, &h->list, list) {
761 if (c->handle == handle) {
762 type = c->type;
763 break;
764 }
765 }
766
767 rcu_read_unlock();
768
769 return type;
770 }
771
772 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
773 __u16 handle)
774 {
775 struct hci_conn_hash *h = &hdev->conn_hash;
776 struct hci_conn *c;
777
778 rcu_read_lock();
779
780 list_for_each_entry_rcu(c, &h->list, list) {
781 if (c->handle == handle) {
782 rcu_read_unlock();
783 return c;
784 }
785 }
786 rcu_read_unlock();
787
788 return NULL;
789 }
790
791 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
792 __u8 type, bdaddr_t *ba)
793 {
794 struct hci_conn_hash *h = &hdev->conn_hash;
795 struct hci_conn *c;
796
797 rcu_read_lock();
798
799 list_for_each_entry_rcu(c, &h->list, list) {
800 if (c->type == type && !bacmp(&c->dst, ba)) {
801 rcu_read_unlock();
802 return c;
803 }
804 }
805
806 rcu_read_unlock();
807
808 return NULL;
809 }
810
811 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
812 bdaddr_t *ba,
813 __u8 ba_type)
814 {
815 struct hci_conn_hash *h = &hdev->conn_hash;
816 struct hci_conn *c;
817
818 rcu_read_lock();
819
820 list_for_each_entry_rcu(c, &h->list, list) {
821 if (c->type != LE_LINK)
822 continue;
823
824 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
825 rcu_read_unlock();
826 return c;
827 }
828 }
829
830 rcu_read_unlock();
831
832 return NULL;
833 }
834
835 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
836 __u8 type, __u16 state)
837 {
838 struct hci_conn_hash *h = &hdev->conn_hash;
839 struct hci_conn *c;
840
841 rcu_read_lock();
842
843 list_for_each_entry_rcu(c, &h->list, list) {
844 if (c->type == type && c->state == state) {
845 rcu_read_unlock();
846 return c;
847 }
848 }
849
850 rcu_read_unlock();
851
852 return NULL;
853 }
854
855 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
856 {
857 struct hci_conn_hash *h = &hdev->conn_hash;
858 struct hci_conn *c;
859
860 rcu_read_lock();
861
862 list_for_each_entry_rcu(c, &h->list, list) {
863 if (c->type == LE_LINK && c->state == BT_CONNECT &&
864 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
865 rcu_read_unlock();
866 return c;
867 }
868 }
869
870 rcu_read_unlock();
871
872 return NULL;
873 }
874
875 int hci_disconnect(struct hci_conn *conn, __u8 reason);
876 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
877 void hci_sco_setup(struct hci_conn *conn, __u8 status);
878
879 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
880 u8 role);
881 int hci_conn_del(struct hci_conn *conn);
882 void hci_conn_hash_flush(struct hci_dev *hdev);
883 void hci_conn_check_pending(struct hci_dev *hdev);
884
885 struct hci_chan *hci_chan_create(struct hci_conn *conn);
886 void hci_chan_del(struct hci_chan *chan);
887 void hci_chan_list_flush(struct hci_conn *conn);
888 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
889
890 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
891 u8 dst_type, u8 sec_level,
892 u16 conn_timeout);
893 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
894 u8 dst_type, u8 sec_level, u16 conn_timeout,
895 u8 role);
896 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
897 u8 sec_level, u8 auth_type);
898 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
899 __u16 setting);
900 int hci_conn_check_link_mode(struct hci_conn *conn);
901 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
902 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
903 bool initiator);
904 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
905
906 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
907
908 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
909
910 /*
911 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
912 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
913 * working or anything else. They just guarantee that the object is available
914 * and can be dereferenced. So you can use its locks, local variables and any
915 * other constant data.
916 * Before accessing runtime data, you _must_ lock the object and then check that
917 * it is still running. As soon as you release the locks, the connection might
918 * get dropped, though.
919 *
920 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
921 * how long the underlying connection is held. So every channel that runs on the
922 * hci_conn object calls this to prevent the connection from disappearing. As
923 * long as you hold a device, you must also guarantee that you have a valid
924 * reference to the device via hci_conn_get() (or the initial reference from
925 * hci_conn_add()).
926 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
927 * break because nobody cares for that. But this means, we cannot use
928 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
929 */
930
931 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
932 {
933 get_device(&conn->dev);
934 return conn;
935 }
936
937 static inline void hci_conn_put(struct hci_conn *conn)
938 {
939 put_device(&conn->dev);
940 }
941
942 static inline void hci_conn_hold(struct hci_conn *conn)
943 {
944 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
945
946 atomic_inc(&conn->refcnt);
947 cancel_delayed_work(&conn->disc_work);
948 }
949
950 static inline void hci_conn_drop(struct hci_conn *conn)
951 {
952 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
953
954 if (atomic_dec_and_test(&conn->refcnt)) {
955 unsigned long timeo;
956
957 switch (conn->type) {
958 case ACL_LINK:
959 case LE_LINK:
960 cancel_delayed_work(&conn->idle_work);
961 if (conn->state == BT_CONNECTED) {
962 timeo = conn->disc_timeout;
963 if (!conn->out)
964 timeo *= 2;
965 } else {
966 timeo = 0;
967 }
968 break;
969
970 case AMP_LINK:
971 timeo = conn->disc_timeout;
972 break;
973
974 default:
975 timeo = 0;
976 break;
977 }
978
979 cancel_delayed_work(&conn->disc_work);
980 queue_delayed_work(conn->hdev->workqueue,
981 &conn->disc_work, timeo);
982 }
983 }
984
985 /* ----- HCI Devices ----- */
986 static inline void hci_dev_put(struct hci_dev *d)
987 {
988 BT_DBG("%s orig refcnt %d", d->name,
989 atomic_read(&d->dev.kobj.kref.refcount));
990
991 put_device(&d->dev);
992 }
993
994 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
995 {
996 BT_DBG("%s orig refcnt %d", d->name,
997 atomic_read(&d->dev.kobj.kref.refcount));
998
999 get_device(&d->dev);
1000 return d;
1001 }
1002
1003 #define hci_dev_lock(d) mutex_lock(&d->lock)
1004 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1005
1006 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1007 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1008
1009 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1010 {
1011 return dev_get_drvdata(&hdev->dev);
1012 }
1013
1014 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1015 {
1016 dev_set_drvdata(&hdev->dev, data);
1017 }
1018
1019 struct hci_dev *hci_dev_get(int index);
1020 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
1021
1022 struct hci_dev *hci_alloc_dev(void);
1023 void hci_free_dev(struct hci_dev *hdev);
1024 int hci_register_dev(struct hci_dev *hdev);
1025 void hci_unregister_dev(struct hci_dev *hdev);
1026 int hci_suspend_dev(struct hci_dev *hdev);
1027 int hci_resume_dev(struct hci_dev *hdev);
1028 int hci_reset_dev(struct hci_dev *hdev);
1029 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1030 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1031 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1032 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1033 int hci_dev_open(__u16 dev);
1034 int hci_dev_close(__u16 dev);
1035 int hci_dev_do_close(struct hci_dev *hdev);
1036 int hci_dev_reset(__u16 dev);
1037 int hci_dev_reset_stat(__u16 dev);
1038 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1039 int hci_get_dev_list(void __user *arg);
1040 int hci_get_dev_info(void __user *arg);
1041 int hci_get_conn_list(void __user *arg);
1042 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1043 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1044 int hci_inquiry(void __user *arg);
1045
1046 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1047 bdaddr_t *bdaddr, u8 type);
1048 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1049 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1050 void hci_bdaddr_list_clear(struct list_head *list);
1051
1052 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1053 bdaddr_t *addr, u8 addr_type);
1054 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1055 bdaddr_t *addr, u8 addr_type);
1056 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1057 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1058
1059 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1060 bdaddr_t *addr,
1061 u8 addr_type);
1062
1063 void hci_uuids_clear(struct hci_dev *hdev);
1064
1065 void hci_link_keys_clear(struct hci_dev *hdev);
1066 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1067 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1068 bdaddr_t *bdaddr, u8 *val, u8 type,
1069 u8 pin_len, bool *persistent);
1070 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1071 u8 addr_type, u8 type, u8 authenticated,
1072 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1073 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1074 u8 addr_type, u8 role);
1075 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1076 void hci_smp_ltks_clear(struct hci_dev *hdev);
1077 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1078
1079 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1080 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1081 u8 addr_type);
1082 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1083 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1084 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1085 void hci_smp_irks_clear(struct hci_dev *hdev);
1086
1087 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1088
1089 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1090 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1091 bdaddr_t *bdaddr, u8 bdaddr_type);
1092 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1093 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1094 u8 *hash256, u8 *rand256);
1095 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 u8 bdaddr_type);
1097
1098 void hci_adv_instances_clear(struct hci_dev *hdev);
1099 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1100 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1101 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1102 u16 adv_data_len, u8 *adv_data,
1103 u16 scan_rsp_len, u8 *scan_rsp_data,
1104 u16 timeout, u16 duration);
1105 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1106
1107 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1108
1109 void hci_init_sysfs(struct hci_dev *hdev);
1110 void hci_conn_init_sysfs(struct hci_conn *conn);
1111 void hci_conn_add_sysfs(struct hci_conn *conn);
1112 void hci_conn_del_sysfs(struct hci_conn *conn);
1113
1114 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1115
1116 /* ----- LMP capabilities ----- */
1117 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1118 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1119 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1120 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1121 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1122 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1123 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1124 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1125 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1126 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1127 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1128 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1129 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1130 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1131 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1132 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1133 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1134 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1135 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1136
1137 /* ----- Extended LMP capabilities ----- */
1138 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1139 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1140 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1141 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1142 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1143 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1144
1145 /* ----- Host capabilities ----- */
1146 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1147 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1148 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1149 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1150
1151 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1152 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1153 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1154 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1155
1156 /* ----- HCI protocols ----- */
1157 #define HCI_PROTO_DEFER 0x01
1158
1159 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1160 __u8 type, __u8 *flags)
1161 {
1162 switch (type) {
1163 case ACL_LINK:
1164 return l2cap_connect_ind(hdev, bdaddr);
1165
1166 case SCO_LINK:
1167 case ESCO_LINK:
1168 return sco_connect_ind(hdev, bdaddr, flags);
1169
1170 default:
1171 BT_ERR("unknown link type %d", type);
1172 return -EINVAL;
1173 }
1174 }
1175
1176 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1177 {
1178 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1179 return HCI_ERROR_REMOTE_USER_TERM;
1180
1181 return l2cap_disconn_ind(conn);
1182 }
1183
1184 /* ----- HCI callbacks ----- */
1185 struct hci_cb {
1186 struct list_head list;
1187
1188 char *name;
1189
1190 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1191 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1192 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1193 __u8 encrypt);
1194 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1195 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1196 };
1197
1198 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1199 {
1200 struct hci_cb *cb;
1201
1202 mutex_lock(&hci_cb_list_lock);
1203 list_for_each_entry(cb, &hci_cb_list, list) {
1204 if (cb->connect_cfm)
1205 cb->connect_cfm(conn, status);
1206 }
1207 mutex_unlock(&hci_cb_list_lock);
1208
1209 if (conn->connect_cfm_cb)
1210 conn->connect_cfm_cb(conn, status);
1211 }
1212
1213 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1214 {
1215 struct hci_cb *cb;
1216
1217 mutex_lock(&hci_cb_list_lock);
1218 list_for_each_entry(cb, &hci_cb_list, list) {
1219 if (cb->disconn_cfm)
1220 cb->disconn_cfm(conn, reason);
1221 }
1222 mutex_unlock(&hci_cb_list_lock);
1223
1224 if (conn->disconn_cfm_cb)
1225 conn->disconn_cfm_cb(conn, reason);
1226 }
1227
1228 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1229 {
1230 struct hci_cb *cb;
1231 __u8 encrypt;
1232
1233 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1234 return;
1235
1236 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1237
1238 mutex_lock(&hci_cb_list_lock);
1239 list_for_each_entry(cb, &hci_cb_list, list) {
1240 if (cb->security_cfm)
1241 cb->security_cfm(conn, status, encrypt);
1242 }
1243 mutex_unlock(&hci_cb_list_lock);
1244
1245 if (conn->security_cfm_cb)
1246 conn->security_cfm_cb(conn, status);
1247 }
1248
1249 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1250 __u8 encrypt)
1251 {
1252 struct hci_cb *cb;
1253
1254 if (conn->sec_level == BT_SECURITY_SDP)
1255 conn->sec_level = BT_SECURITY_LOW;
1256
1257 if (conn->pending_sec_level > conn->sec_level)
1258 conn->sec_level = conn->pending_sec_level;
1259
1260 mutex_lock(&hci_cb_list_lock);
1261 list_for_each_entry(cb, &hci_cb_list, list) {
1262 if (cb->security_cfm)
1263 cb->security_cfm(conn, status, encrypt);
1264 }
1265 mutex_unlock(&hci_cb_list_lock);
1266
1267 if (conn->security_cfm_cb)
1268 conn->security_cfm_cb(conn, status);
1269 }
1270
1271 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1272 {
1273 struct hci_cb *cb;
1274
1275 mutex_lock(&hci_cb_list_lock);
1276 list_for_each_entry(cb, &hci_cb_list, list) {
1277 if (cb->key_change_cfm)
1278 cb->key_change_cfm(conn, status);
1279 }
1280 mutex_unlock(&hci_cb_list_lock);
1281 }
1282
1283 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1284 __u8 role)
1285 {
1286 struct hci_cb *cb;
1287
1288 mutex_lock(&hci_cb_list_lock);
1289 list_for_each_entry(cb, &hci_cb_list, list) {
1290 if (cb->role_switch_cfm)
1291 cb->role_switch_cfm(conn, status, role);
1292 }
1293 mutex_unlock(&hci_cb_list_lock);
1294 }
1295
1296 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1297 size_t *data_len)
1298 {
1299 size_t parsed = 0;
1300
1301 if (eir_len < 2)
1302 return NULL;
1303
1304 while (parsed < eir_len - 1) {
1305 u8 field_len = eir[0];
1306
1307 if (field_len == 0)
1308 break;
1309
1310 parsed += field_len + 1;
1311
1312 if (parsed > eir_len)
1313 break;
1314
1315 if (eir[1] != type) {
1316 eir += field_len + 1;
1317 continue;
1318 }
1319
1320 /* Zero length data */
1321 if (field_len == 1)
1322 return NULL;
1323
1324 if (data_len)
1325 *data_len = field_len - 1;
1326
1327 return &eir[2];
1328 }
1329
1330 return NULL;
1331 }
1332
1333 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1334 {
1335 if (addr_type != ADDR_LE_DEV_RANDOM)
1336 return false;
1337
1338 if ((bdaddr->b[5] & 0xc0) == 0x40)
1339 return true;
1340
1341 return false;
1342 }
1343
1344 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1345 {
1346 if (addr_type == ADDR_LE_DEV_PUBLIC)
1347 return true;
1348
1349 /* Check for Random Static address type */
1350 if ((addr->b[5] & 0xc0) == 0xc0)
1351 return true;
1352
1353 return false;
1354 }
1355
1356 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1357 bdaddr_t *bdaddr, u8 addr_type)
1358 {
1359 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1360 return NULL;
1361
1362 return hci_find_irk_by_rpa(hdev, bdaddr);
1363 }
1364
1365 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1366 u16 to_multiplier)
1367 {
1368 u16 max_latency;
1369
1370 if (min > max || min < 6 || max > 3200)
1371 return -EINVAL;
1372
1373 if (to_multiplier < 10 || to_multiplier > 3200)
1374 return -EINVAL;
1375
1376 if (max >= to_multiplier * 8)
1377 return -EINVAL;
1378
1379 max_latency = (to_multiplier * 4 / max) - 1;
1380 if (latency > 499 || latency > max_latency)
1381 return -EINVAL;
1382
1383 return 0;
1384 }
1385
1386 int hci_register_cb(struct hci_cb *hcb);
1387 int hci_unregister_cb(struct hci_cb *hcb);
1388
1389 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1390 const void *param, u32 timeout);
1391 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1392 const void *param, u8 event, u32 timeout);
1393
1394 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1395 const void *param);
1396 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1397 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1398
1399 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1400
1401 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1402 const void *param, u32 timeout);
1403
1404 /* ----- HCI Sockets ----- */
1405 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1406 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1407 int flag, struct sock *skip_sk);
1408 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1409 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1410 void *data, u16 data_len, ktime_t tstamp,
1411 int flag, struct sock *skip_sk);
1412
1413 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1414
1415 #define HCI_MGMT_VAR_LEN BIT(0)
1416 #define HCI_MGMT_NO_HDEV BIT(1)
1417 #define HCI_MGMT_UNTRUSTED BIT(2)
1418 #define HCI_MGMT_UNCONFIGURED BIT(3)
1419
1420 struct hci_mgmt_handler {
1421 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1422 u16 data_len);
1423 size_t data_len;
1424 unsigned long flags;
1425 };
1426
1427 struct hci_mgmt_chan {
1428 struct list_head list;
1429 unsigned short channel;
1430 size_t handler_count;
1431 const struct hci_mgmt_handler *handlers;
1432 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1433 };
1434
1435 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1436 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1437
1438 /* Management interface */
1439 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1440 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1441 BIT(BDADDR_LE_RANDOM))
1442 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1443 BIT(BDADDR_LE_PUBLIC) | \
1444 BIT(BDADDR_LE_RANDOM))
1445
1446 /* These LE scan and inquiry parameters were chosen according to LE General
1447 * Discovery Procedure specification.
1448 */
1449 #define DISCOV_LE_SCAN_WIN 0x12
1450 #define DISCOV_LE_SCAN_INT 0x12
1451 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1452 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1453 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1454 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1455 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1456
1457 void mgmt_fill_version_info(void *ver);
1458 int mgmt_new_settings(struct hci_dev *hdev);
1459 void mgmt_index_added(struct hci_dev *hdev);
1460 void mgmt_index_removed(struct hci_dev *hdev);
1461 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1462 void mgmt_power_on(struct hci_dev *hdev, int err);
1463 void __mgmt_power_off(struct hci_dev *hdev);
1464 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1465 bool persistent);
1466 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1467 u32 flags, u8 *name, u8 name_len);
1468 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1469 u8 link_type, u8 addr_type, u8 reason,
1470 bool mgmt_connected);
1471 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1472 u8 link_type, u8 addr_type, u8 status);
1473 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1474 u8 addr_type, u8 status);
1475 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1476 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1477 u8 status);
1478 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1479 u8 status);
1480 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1481 u8 link_type, u8 addr_type, u32 value,
1482 u8 confirm_hint);
1483 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1484 u8 link_type, u8 addr_type, u8 status);
1485 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1486 u8 link_type, u8 addr_type, u8 status);
1487 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1488 u8 link_type, u8 addr_type);
1489 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1490 u8 link_type, u8 addr_type, u8 status);
1491 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1492 u8 link_type, u8 addr_type, u8 status);
1493 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1494 u8 link_type, u8 addr_type, u32 passkey,
1495 u8 entered);
1496 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1497 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1498 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1499 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1500 u8 status);
1501 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1502 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1503 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1504 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1505 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1506 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1507 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1508 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1509 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1510 bool mgmt_powering_down(struct hci_dev *hdev);
1511 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1512 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1513 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1514 bool persistent);
1515 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1516 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1517 u16 max_interval, u16 latency, u16 timeout);
1518 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1519 bool mgmt_get_connectable(struct hci_dev *hdev);
1520 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1521 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1522 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1523 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1524 u8 instance);
1525 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1526 u8 instance);
1527
1528 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1529 u16 to_multiplier);
1530 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1531 __u8 ltk[16], __u8 key_size);
1532
1533 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1534 u8 *bdaddr_type);
1535
1536 #define SCO_AIRMODE_MASK 0x0003
1537 #define SCO_AIRMODE_CVSD 0x0000
1538 #define SCO_AIRMODE_TRANSP 0x0003
1539
1540 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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