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1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <linux/leds.h>
29#include <linux/rculist.h>
30
31#include <net/bluetooth/hci.h>
32#include <net/bluetooth/hci_sock.h>
33
34/* HCI priority */
35#define HCI_PRIO_MAX 7
36
37/* HCI Core structures */
38struct inquiry_data {
39 bdaddr_t bdaddr;
40 __u8 pscan_rep_mode;
41 __u8 pscan_period_mode;
42 __u8 pscan_mode;
43 __u8 dev_class[3];
44 __le16 clock_offset;
45 __s8 rssi;
46 __u8 ssp_mode;
47};
48
49struct inquiry_entry {
50 struct list_head all; /* inq_cache.all */
51 struct list_head list; /* unknown or resolve */
52 enum {
53 NAME_NOT_KNOWN,
54 NAME_NEEDED,
55 NAME_PENDING,
56 NAME_KNOWN,
57 } name_state;
58 __u32 timestamp;
59 struct inquiry_data data;
60};
61
62struct discovery_state {
63 int type;
64 enum {
65 DISCOVERY_STOPPED,
66 DISCOVERY_STARTING,
67 DISCOVERY_FINDING,
68 DISCOVERY_RESOLVING,
69 DISCOVERY_STOPPING,
70 } state;
71 struct list_head all; /* All devices found during inquiry */
72 struct list_head unknown; /* Name state not known */
73 struct list_head resolve; /* Name needs to be resolved */
74 __u32 timestamp;
75 bdaddr_t last_adv_addr;
76 u8 last_adv_addr_type;
77 s8 last_adv_rssi;
78 u32 last_adv_flags;
79 u8 last_adv_data[HCI_MAX_AD_LENGTH];
80 u8 last_adv_data_len;
81 bool report_invalid_rssi;
82 bool result_filtering;
83 bool limited;
84 s8 rssi;
85 u16 uuid_count;
86 u8 (*uuids)[16];
87 unsigned long scan_start;
88 unsigned long scan_duration;
89};
90
91struct hci_conn_hash {
92 struct list_head list;
93 unsigned int acl_num;
94 unsigned int amp_num;
95 unsigned int sco_num;
96 unsigned int le_num;
97 unsigned int le_num_slave;
98};
99
100struct bdaddr_list {
101 struct list_head list;
102 bdaddr_t bdaddr;
103 u8 bdaddr_type;
104};
105
106struct bt_uuid {
107 struct list_head list;
108 u8 uuid[16];
109 u8 size;
110 u8 svc_hint;
111};
112
113struct smp_csrk {
114 bdaddr_t bdaddr;
115 u8 bdaddr_type;
116 u8 type;
117 u8 val[16];
118};
119
120struct smp_ltk {
121 struct list_head list;
122 struct rcu_head rcu;
123 bdaddr_t bdaddr;
124 u8 bdaddr_type;
125 u8 authenticated;
126 u8 type;
127 u8 enc_size;
128 __le16 ediv;
129 __le64 rand;
130 u8 val[16];
131};
132
133struct smp_irk {
134 struct list_head list;
135 struct rcu_head rcu;
136 bdaddr_t rpa;
137 bdaddr_t bdaddr;
138 u8 addr_type;
139 u8 val[16];
140};
141
142struct link_key {
143 struct list_head list;
144 struct rcu_head rcu;
145 bdaddr_t bdaddr;
146 u8 type;
147 u8 val[HCI_LINK_KEY_SIZE];
148 u8 pin_len;
149};
150
151struct oob_data {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 present;
156 u8 hash192[16];
157 u8 rand192[16];
158 u8 hash256[16];
159 u8 rand256[16];
160};
161
162struct adv_info {
163 struct list_head list;
164 bool pending;
165 __u8 instance;
166 __u32 flags;
167 __u16 timeout;
168 __u16 remaining_time;
169 __u16 duration;
170 __u16 adv_data_len;
171 __u8 adv_data[HCI_MAX_AD_LENGTH];
172 __u16 scan_rsp_len;
173 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
174};
175
176#define HCI_MAX_ADV_INSTANCES 5
177#define HCI_DEFAULT_ADV_DURATION 2
178
179#define HCI_MAX_SHORT_NAME_LENGTH 10
180
181/* Default LE RPA expiry time, 15 minutes */
182#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
183
184/* Default min/max age of connection information (1s/3s) */
185#define DEFAULT_CONN_INFO_MIN_AGE 1000
186#define DEFAULT_CONN_INFO_MAX_AGE 3000
187
188struct amp_assoc {
189 __u16 len;
190 __u16 offset;
191 __u16 rem_len;
192 __u16 len_so_far;
193 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
194};
195
196#define HCI_MAX_PAGES 3
197
198struct hci_dev {
199 struct list_head list;
200 struct mutex lock;
201
202 char name[8];
203 unsigned long flags;
204 __u16 id;
205 __u8 bus;
206 __u8 dev_type;
207 bdaddr_t bdaddr;
208 bdaddr_t setup_addr;
209 bdaddr_t public_addr;
210 bdaddr_t random_addr;
211 bdaddr_t static_addr;
212 __u8 adv_addr_type;
213 __u8 dev_name[HCI_MAX_NAME_LENGTH];
214 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
215 __u8 eir[HCI_MAX_EIR_LENGTH];
216 __u16 appearance;
217 __u8 dev_class[3];
218 __u8 major_class;
219 __u8 minor_class;
220 __u8 max_page;
221 __u8 features[HCI_MAX_PAGES][8];
222 __u8 le_features[8];
223 __u8 le_white_list_size;
224 __u8 le_states[8];
225 __u8 commands[64];
226 __u8 hci_ver;
227 __u16 hci_rev;
228 __u8 lmp_ver;
229 __u16 manufacturer;
230 __u16 lmp_subver;
231 __u16 voice_setting;
232 __u8 num_iac;
233 __u8 stored_max_keys;
234 __u8 stored_num_keys;
235 __u8 io_capability;
236 __s8 inq_tx_power;
237 __u16 page_scan_interval;
238 __u16 page_scan_window;
239 __u8 page_scan_type;
240 __u8 le_adv_channel_map;
241 __u16 le_adv_min_interval;
242 __u16 le_adv_max_interval;
243 __u8 le_scan_type;
244 __u16 le_scan_interval;
245 __u16 le_scan_window;
246 __u16 le_conn_min_interval;
247 __u16 le_conn_max_interval;
248 __u16 le_conn_latency;
249 __u16 le_supv_timeout;
250 __u16 le_def_tx_len;
251 __u16 le_def_tx_time;
252 __u16 le_max_tx_len;
253 __u16 le_max_tx_time;
254 __u16 le_max_rx_len;
255 __u16 le_max_rx_time;
256 __u16 discov_interleaved_timeout;
257 __u16 conn_info_min_age;
258 __u16 conn_info_max_age;
259 __u8 ssp_debug_mode;
260 __u8 hw_error_code;
261 __u32 clock;
262
263 __u16 devid_source;
264 __u16 devid_vendor;
265 __u16 devid_product;
266 __u16 devid_version;
267
268 __u16 pkt_type;
269 __u16 esco_type;
270 __u16 link_policy;
271 __u16 link_mode;
272
273 __u32 idle_timeout;
274 __u16 sniff_min_interval;
275 __u16 sniff_max_interval;
276
277 __u8 amp_status;
278 __u32 amp_total_bw;
279 __u32 amp_max_bw;
280 __u32 amp_min_latency;
281 __u32 amp_max_pdu;
282 __u8 amp_type;
283 __u16 amp_pal_cap;
284 __u16 amp_assoc_size;
285 __u32 amp_max_flush_to;
286 __u32 amp_be_flush_to;
287
288 struct amp_assoc loc_assoc;
289
290 __u8 flow_ctl_mode;
291
292 unsigned int auto_accept_delay;
293
294 unsigned long quirks;
295
296 atomic_t cmd_cnt;
297 unsigned int acl_cnt;
298 unsigned int sco_cnt;
299 unsigned int le_cnt;
300
301 unsigned int acl_mtu;
302 unsigned int sco_mtu;
303 unsigned int le_mtu;
304 unsigned int acl_pkts;
305 unsigned int sco_pkts;
306 unsigned int le_pkts;
307
308 __u16 block_len;
309 __u16 block_mtu;
310 __u16 num_blocks;
311 __u16 block_cnt;
312
313 unsigned long acl_last_tx;
314 unsigned long sco_last_tx;
315 unsigned long le_last_tx;
316
317 struct workqueue_struct *workqueue;
318 struct workqueue_struct *req_workqueue;
319
320 struct work_struct power_on;
321 struct delayed_work power_off;
322 struct work_struct error_reset;
323
324 __u16 discov_timeout;
325 struct delayed_work discov_off;
326
327 struct delayed_work service_cache;
328
329 struct delayed_work cmd_timer;
330
331 struct work_struct rx_work;
332 struct work_struct cmd_work;
333 struct work_struct tx_work;
334
335 struct work_struct discov_update;
336 struct work_struct bg_scan_update;
337 struct work_struct scan_update;
338 struct work_struct connectable_update;
339 struct work_struct discoverable_update;
340 struct delayed_work le_scan_disable;
341 struct delayed_work le_scan_restart;
342
343 struct sk_buff_head rx_q;
344 struct sk_buff_head raw_q;
345 struct sk_buff_head cmd_q;
346
347 struct sk_buff *sent_cmd;
348
349 struct mutex req_lock;
350 wait_queue_head_t req_wait_q;
351 __u32 req_status;
352 __u32 req_result;
353 struct sk_buff *req_skb;
354
355 void *smp_data;
356 void *smp_bredr_data;
357
358 struct discovery_state discovery;
359 struct hci_conn_hash conn_hash;
360
361 struct list_head mgmt_pending;
362 struct list_head blacklist;
363 struct list_head whitelist;
364 struct list_head uuids;
365 struct list_head link_keys;
366 struct list_head long_term_keys;
367 struct list_head identity_resolving_keys;
368 struct list_head remote_oob_data;
369 struct list_head le_white_list;
370 struct list_head le_conn_params;
371 struct list_head pend_le_conns;
372 struct list_head pend_le_reports;
373
374 struct hci_dev_stats stat;
375
376 atomic_t promisc;
377
378 const char *hw_info;
379 const char *fw_info;
380 struct dentry *debugfs;
381
382 struct device dev;
383
384 struct rfkill *rfkill;
385
386 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
387
388 __s8 adv_tx_power;
389 __u8 adv_data[HCI_MAX_AD_LENGTH];
390 __u8 adv_data_len;
391 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
392 __u8 scan_rsp_data_len;
393
394 struct list_head adv_instances;
395 unsigned int adv_instance_cnt;
396 __u8 cur_adv_instance;
397 __u16 adv_instance_timeout;
398 struct delayed_work adv_instance_expire;
399
400 __u8 irk[16];
401 __u32 rpa_timeout;
402 struct delayed_work rpa_expired;
403 bdaddr_t rpa;
404
405#if IS_ENABLED(CONFIG_BT_LEDS)
406 struct led_trigger *power_led;
407#endif
408
409 int (*open)(struct hci_dev *hdev);
410 int (*close)(struct hci_dev *hdev);
411 int (*flush)(struct hci_dev *hdev);
412 int (*setup)(struct hci_dev *hdev);
413 int (*shutdown)(struct hci_dev *hdev);
414 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
415 void (*notify)(struct hci_dev *hdev, unsigned int evt);
416 void (*hw_error)(struct hci_dev *hdev, u8 code);
417 int (*post_init)(struct hci_dev *hdev);
418 int (*set_diag)(struct hci_dev *hdev, bool enable);
419 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
420};
421
422#define HCI_PHY_HANDLE(handle) (handle & 0xff)
423
424struct hci_conn {
425 struct list_head list;
426
427 atomic_t refcnt;
428
429 bdaddr_t dst;
430 __u8 dst_type;
431 bdaddr_t src;
432 __u8 src_type;
433 bdaddr_t init_addr;
434 __u8 init_addr_type;
435 bdaddr_t resp_addr;
436 __u8 resp_addr_type;
437 __u16 handle;
438 __u16 state;
439 __u8 mode;
440 __u8 type;
441 __u8 role;
442 bool out;
443 __u8 attempt;
444 __u8 dev_class[3];
445 __u8 features[HCI_MAX_PAGES][8];
446 __u16 pkt_type;
447 __u16 link_policy;
448 __u8 key_type;
449 __u8 auth_type;
450 __u8 sec_level;
451 __u8 pending_sec_level;
452 __u8 pin_length;
453 __u8 enc_key_size;
454 __u8 io_capability;
455 __u32 passkey_notify;
456 __u8 passkey_entered;
457 __u16 disc_timeout;
458 __u16 conn_timeout;
459 __u16 setting;
460 __u16 le_conn_min_interval;
461 __u16 le_conn_max_interval;
462 __u16 le_conn_interval;
463 __u16 le_conn_latency;
464 __u16 le_supv_timeout;
465 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
466 __u8 le_adv_data_len;
467 __s8 rssi;
468 __s8 tx_power;
469 __s8 max_tx_power;
470 unsigned long flags;
471
472 __u32 clock;
473 __u16 clock_accuracy;
474
475 unsigned long conn_info_timestamp;
476
477 __u8 remote_cap;
478 __u8 remote_auth;
479 __u8 remote_id;
480
481 unsigned int sent;
482
483 struct sk_buff_head data_q;
484 struct list_head chan_list;
485
486 struct delayed_work disc_work;
487 struct delayed_work auto_accept_work;
488 struct delayed_work idle_work;
489 struct delayed_work le_conn_timeout;
490 struct work_struct le_scan_cleanup;
491
492 struct device dev;
493 struct dentry *debugfs;
494
495 struct hci_dev *hdev;
496 void *l2cap_data;
497 void *sco_data;
498 struct amp_mgr *amp_mgr;
499
500 struct hci_conn *link;
501
502 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
503 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
504 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
505};
506
507struct hci_chan {
508 struct list_head list;
509 __u16 handle;
510 struct hci_conn *conn;
511 struct sk_buff_head data_q;
512 unsigned int sent;
513 __u8 state;
514};
515
516struct hci_conn_params {
517 struct list_head list;
518 struct list_head action;
519
520 bdaddr_t addr;
521 u8 addr_type;
522
523 u16 conn_min_interval;
524 u16 conn_max_interval;
525 u16 conn_latency;
526 u16 supervision_timeout;
527
528 enum {
529 HCI_AUTO_CONN_DISABLED,
530 HCI_AUTO_CONN_REPORT,
531 HCI_AUTO_CONN_DIRECT,
532 HCI_AUTO_CONN_ALWAYS,
533 HCI_AUTO_CONN_LINK_LOSS,
534 HCI_AUTO_CONN_EXPLICIT,
535 } auto_connect;
536
537 struct hci_conn *conn;
538 bool explicit_connect;
539};
540
541extern struct list_head hci_dev_list;
542extern struct list_head hci_cb_list;
543extern rwlock_t hci_dev_list_lock;
544extern struct mutex hci_cb_list_lock;
545
546#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
547#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
548#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
549#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
550#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
551#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
552#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
553
554#define hci_dev_clear_volatile_flags(hdev) \
555 do { \
556 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
557 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
558 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
559 } while (0)
560
561/* ----- HCI interface to upper protocols ----- */
562int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
563int l2cap_disconn_ind(struct hci_conn *hcon);
564void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
565
566#if IS_ENABLED(CONFIG_BT_BREDR)
567int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
568void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
569#else
570static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
571 __u8 *flags)
572{
573 return 0;
574}
575
576static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
577{
578}
579#endif
580
581/* ----- Inquiry cache ----- */
582#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
583#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
584
585static inline void discovery_init(struct hci_dev *hdev)
586{
587 hdev->discovery.state = DISCOVERY_STOPPED;
588 INIT_LIST_HEAD(&hdev->discovery.all);
589 INIT_LIST_HEAD(&hdev->discovery.unknown);
590 INIT_LIST_HEAD(&hdev->discovery.resolve);
591 hdev->discovery.report_invalid_rssi = true;
592 hdev->discovery.rssi = HCI_RSSI_INVALID;
593}
594
595static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
596{
597 hdev->discovery.result_filtering = false;
598 hdev->discovery.report_invalid_rssi = true;
599 hdev->discovery.rssi = HCI_RSSI_INVALID;
600 hdev->discovery.uuid_count = 0;
601 kfree(hdev->discovery.uuids);
602 hdev->discovery.uuids = NULL;
603 hdev->discovery.scan_start = 0;
604 hdev->discovery.scan_duration = 0;
605}
606
607bool hci_discovery_active(struct hci_dev *hdev);
608
609void hci_discovery_set_state(struct hci_dev *hdev, int state);
610
611static inline int inquiry_cache_empty(struct hci_dev *hdev)
612{
613 return list_empty(&hdev->discovery.all);
614}
615
616static inline long inquiry_cache_age(struct hci_dev *hdev)
617{
618 struct discovery_state *c = &hdev->discovery;
619 return jiffies - c->timestamp;
620}
621
622static inline long inquiry_entry_age(struct inquiry_entry *e)
623{
624 return jiffies - e->timestamp;
625}
626
627struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
628 bdaddr_t *bdaddr);
629struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
630 bdaddr_t *bdaddr);
631struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
632 bdaddr_t *bdaddr,
633 int state);
634void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
635 struct inquiry_entry *ie);
636u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
637 bool name_known);
638void hci_inquiry_cache_flush(struct hci_dev *hdev);
639
640/* ----- HCI Connections ----- */
641enum {
642 HCI_CONN_AUTH_PEND,
643 HCI_CONN_REAUTH_PEND,
644 HCI_CONN_ENCRYPT_PEND,
645 HCI_CONN_RSWITCH_PEND,
646 HCI_CONN_MODE_CHANGE_PEND,
647 HCI_CONN_SCO_SETUP_PEND,
648 HCI_CONN_MGMT_CONNECTED,
649 HCI_CONN_SSP_ENABLED,
650 HCI_CONN_SC_ENABLED,
651 HCI_CONN_AES_CCM,
652 HCI_CONN_POWER_SAVE,
653 HCI_CONN_FLUSH_KEY,
654 HCI_CONN_ENCRYPT,
655 HCI_CONN_AUTH,
656 HCI_CONN_SECURE,
657 HCI_CONN_FIPS,
658 HCI_CONN_STK_ENCRYPT,
659 HCI_CONN_AUTH_INITIATOR,
660 HCI_CONN_DROP,
661 HCI_CONN_PARAM_REMOVAL_PEND,
662 HCI_CONN_NEW_LINK_KEY,
663 HCI_CONN_SCANNING,
664 HCI_CONN_AUTH_FAILURE,
665};
666
667static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
668{
669 struct hci_dev *hdev = conn->hdev;
670 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
671 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
672}
673
674static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
675{
676 struct hci_dev *hdev = conn->hdev;
677 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
678 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
679}
680
681static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
682{
683 struct hci_conn_hash *h = &hdev->conn_hash;
684 list_add_rcu(&c->list, &h->list);
685 switch (c->type) {
686 case ACL_LINK:
687 h->acl_num++;
688 break;
689 case AMP_LINK:
690 h->amp_num++;
691 break;
692 case LE_LINK:
693 h->le_num++;
694 if (c->role == HCI_ROLE_SLAVE)
695 h->le_num_slave++;
696 break;
697 case SCO_LINK:
698 case ESCO_LINK:
699 h->sco_num++;
700 break;
701 }
702}
703
704static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
705{
706 struct hci_conn_hash *h = &hdev->conn_hash;
707
708 list_del_rcu(&c->list);
709 synchronize_rcu();
710
711 switch (c->type) {
712 case ACL_LINK:
713 h->acl_num--;
714 break;
715 case AMP_LINK:
716 h->amp_num--;
717 break;
718 case LE_LINK:
719 h->le_num--;
720 if (c->role == HCI_ROLE_SLAVE)
721 h->le_num_slave--;
722 break;
723 case SCO_LINK:
724 case ESCO_LINK:
725 h->sco_num--;
726 break;
727 }
728}
729
730static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
731{
732 struct hci_conn_hash *h = &hdev->conn_hash;
733 switch (type) {
734 case ACL_LINK:
735 return h->acl_num;
736 case AMP_LINK:
737 return h->amp_num;
738 case LE_LINK:
739 return h->le_num;
740 case SCO_LINK:
741 case ESCO_LINK:
742 return h->sco_num;
743 default:
744 return 0;
745 }
746}
747
748static inline unsigned int hci_conn_count(struct hci_dev *hdev)
749{
750 struct hci_conn_hash *c = &hdev->conn_hash;
751
752 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
753}
754
755static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
756{
757 struct hci_conn_hash *h = &hdev->conn_hash;
758 struct hci_conn *c;
759 __u8 type = INVALID_LINK;
760
761 rcu_read_lock();
762
763 list_for_each_entry_rcu(c, &h->list, list) {
764 if (c->handle == handle) {
765 type = c->type;
766 break;
767 }
768 }
769
770 rcu_read_unlock();
771
772 return type;
773}
774
775static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
776 __u16 handle)
777{
778 struct hci_conn_hash *h = &hdev->conn_hash;
779 struct hci_conn *c;
780
781 rcu_read_lock();
782
783 list_for_each_entry_rcu(c, &h->list, list) {
784 if (c->handle == handle) {
785 rcu_read_unlock();
786 return c;
787 }
788 }
789 rcu_read_unlock();
790
791 return NULL;
792}
793
794static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
795 __u8 type, bdaddr_t *ba)
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->type == type && !bacmp(&c->dst, ba)) {
804 rcu_read_unlock();
805 return c;
806 }
807 }
808
809 rcu_read_unlock();
810
811 return NULL;
812}
813
814static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
815 bdaddr_t *ba,
816 __u8 ba_type)
817{
818 struct hci_conn_hash *h = &hdev->conn_hash;
819 struct hci_conn *c;
820
821 rcu_read_lock();
822
823 list_for_each_entry_rcu(c, &h->list, list) {
824 if (c->type != LE_LINK)
825 continue;
826
827 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
828 rcu_read_unlock();
829 return c;
830 }
831 }
832
833 rcu_read_unlock();
834
835 return NULL;
836}
837
838static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
839 __u8 type, __u16 state)
840{
841 struct hci_conn_hash *h = &hdev->conn_hash;
842 struct hci_conn *c;
843
844 rcu_read_lock();
845
846 list_for_each_entry_rcu(c, &h->list, list) {
847 if (c->type == type && c->state == state) {
848 rcu_read_unlock();
849 return c;
850 }
851 }
852
853 rcu_read_unlock();
854
855 return NULL;
856}
857
858static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
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 == LE_LINK && c->state == BT_CONNECT &&
867 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
868 rcu_read_unlock();
869 return c;
870 }
871 }
872
873 rcu_read_unlock();
874
875 return NULL;
876}
877
878int hci_disconnect(struct hci_conn *conn, __u8 reason);
879bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
880void hci_sco_setup(struct hci_conn *conn, __u8 status);
881
882struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
883 u8 role);
884int hci_conn_del(struct hci_conn *conn);
885void hci_conn_hash_flush(struct hci_dev *hdev);
886void hci_conn_check_pending(struct hci_dev *hdev);
887
888struct hci_chan *hci_chan_create(struct hci_conn *conn);
889void hci_chan_del(struct hci_chan *chan);
890void hci_chan_list_flush(struct hci_conn *conn);
891struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
892
893struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
894 u8 dst_type, u8 sec_level,
895 u16 conn_timeout);
896struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
897 u8 dst_type, u8 sec_level, u16 conn_timeout,
898 u8 role, bdaddr_t *direct_rpa);
899struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
900 u8 sec_level, u8 auth_type);
901struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
902 __u16 setting);
903int hci_conn_check_link_mode(struct hci_conn *conn);
904int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
905int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
906 bool initiator);
907int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
908
909void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
910
911void hci_le_conn_failed(struct hci_conn *conn, u8 status);
912
913/*
914 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
915 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
916 * working or anything else. They just guarantee that the object is available
917 * and can be dereferenced. So you can use its locks, local variables and any
918 * other constant data.
919 * Before accessing runtime data, you _must_ lock the object and then check that
920 * it is still running. As soon as you release the locks, the connection might
921 * get dropped, though.
922 *
923 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
924 * how long the underlying connection is held. So every channel that runs on the
925 * hci_conn object calls this to prevent the connection from disappearing. As
926 * long as you hold a device, you must also guarantee that you have a valid
927 * reference to the device via hci_conn_get() (or the initial reference from
928 * hci_conn_add()).
929 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
930 * break because nobody cares for that. But this means, we cannot use
931 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
932 */
933
934static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
935{
936 get_device(&conn->dev);
937 return conn;
938}
939
940static inline void hci_conn_put(struct hci_conn *conn)
941{
942 put_device(&conn->dev);
943}
944
945static inline void hci_conn_hold(struct hci_conn *conn)
946{
947 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
948
949 atomic_inc(&conn->refcnt);
950 cancel_delayed_work(&conn->disc_work);
951}
952
953static inline void hci_conn_drop(struct hci_conn *conn)
954{
955 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
956
957 if (atomic_dec_and_test(&conn->refcnt)) {
958 unsigned long timeo;
959
960 switch (conn->type) {
961 case ACL_LINK:
962 case LE_LINK:
963 cancel_delayed_work(&conn->idle_work);
964 if (conn->state == BT_CONNECTED) {
965 timeo = conn->disc_timeout;
966 if (!conn->out)
967 timeo *= 2;
968 } else {
969 timeo = 0;
970 }
971 break;
972
973 case AMP_LINK:
974 timeo = conn->disc_timeout;
975 break;
976
977 default:
978 timeo = 0;
979 break;
980 }
981
982 cancel_delayed_work(&conn->disc_work);
983 queue_delayed_work(conn->hdev->workqueue,
984 &conn->disc_work, timeo);
985 }
986}
987
988/* ----- HCI Devices ----- */
989static inline void hci_dev_put(struct hci_dev *d)
990{
991 BT_DBG("%s orig refcnt %d", d->name,
992 kref_read(&d->dev.kobj.kref));
993
994 put_device(&d->dev);
995}
996
997static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
998{
999 BT_DBG("%s orig refcnt %d", d->name,
1000 kref_read(&d->dev.kobj.kref));
1001
1002 get_device(&d->dev);
1003 return d;
1004}
1005
1006#define hci_dev_lock(d) mutex_lock(&d->lock)
1007#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1008
1009#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1010#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1011
1012static inline void *hci_get_drvdata(struct hci_dev *hdev)
1013{
1014 return dev_get_drvdata(&hdev->dev);
1015}
1016
1017static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1018{
1019 dev_set_drvdata(&hdev->dev, data);
1020}
1021
1022struct hci_dev *hci_dev_get(int index);
1023struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1024
1025struct hci_dev *hci_alloc_dev(void);
1026void hci_free_dev(struct hci_dev *hdev);
1027int hci_register_dev(struct hci_dev *hdev);
1028void hci_unregister_dev(struct hci_dev *hdev);
1029int hci_suspend_dev(struct hci_dev *hdev);
1030int hci_resume_dev(struct hci_dev *hdev);
1031int hci_reset_dev(struct hci_dev *hdev);
1032int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1033int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1034__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1035__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1036int hci_dev_open(__u16 dev);
1037int hci_dev_close(__u16 dev);
1038int hci_dev_do_close(struct hci_dev *hdev);
1039int hci_dev_reset(__u16 dev);
1040int hci_dev_reset_stat(__u16 dev);
1041int hci_dev_cmd(unsigned int cmd, void __user *arg);
1042int hci_get_dev_list(void __user *arg);
1043int hci_get_dev_info(void __user *arg);
1044int hci_get_conn_list(void __user *arg);
1045int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1046int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1047int hci_inquiry(void __user *arg);
1048
1049struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1050 bdaddr_t *bdaddr, u8 type);
1051int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1052int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1053void hci_bdaddr_list_clear(struct list_head *list);
1054
1055struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1058 bdaddr_t *addr, u8 addr_type);
1059void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1060void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1061
1062struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1063 bdaddr_t *addr,
1064 u8 addr_type);
1065
1066void hci_uuids_clear(struct hci_dev *hdev);
1067
1068void hci_link_keys_clear(struct hci_dev *hdev);
1069struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1070struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1071 bdaddr_t *bdaddr, u8 *val, u8 type,
1072 u8 pin_len, bool *persistent);
1073struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1074 u8 addr_type, u8 type, u8 authenticated,
1075 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1076struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1077 u8 addr_type, u8 role);
1078int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1079void hci_smp_ltks_clear(struct hci_dev *hdev);
1080int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1081
1082struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1083struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type);
1085struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1086 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1087void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1088void hci_smp_irks_clear(struct hci_dev *hdev);
1089
1090bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1091
1092void hci_remote_oob_data_clear(struct hci_dev *hdev);
1093struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1094 bdaddr_t *bdaddr, u8 bdaddr_type);
1095int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1097 u8 *hash256, u8 *rand256);
1098int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1099 u8 bdaddr_type);
1100
1101void hci_adv_instances_clear(struct hci_dev *hdev);
1102struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1103struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1104int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1105 u16 adv_data_len, u8 *adv_data,
1106 u16 scan_rsp_len, u8 *scan_rsp_data,
1107 u16 timeout, u16 duration);
1108int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1109
1110void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1111
1112void hci_init_sysfs(struct hci_dev *hdev);
1113void hci_conn_init_sysfs(struct hci_conn *conn);
1114void hci_conn_add_sysfs(struct hci_conn *conn);
1115void hci_conn_del_sysfs(struct hci_conn *conn);
1116
1117#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1118
1119/* ----- LMP capabilities ----- */
1120#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1121#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1122#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1123#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1124#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1125#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1126#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1127#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1128#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1129#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1130#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1131#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1132#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1133#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1134#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1135#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1136#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1137#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1138#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1139
1140/* ----- Extended LMP capabilities ----- */
1141#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1142#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1143#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1144#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1145#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1146#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1147
1148/* ----- Host capabilities ----- */
1149#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1150#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1151#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1152#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1153
1154#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1155 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1156#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1157 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1158
1159/* ----- HCI protocols ----- */
1160#define HCI_PROTO_DEFER 0x01
1161
1162static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1163 __u8 type, __u8 *flags)
1164{
1165 switch (type) {
1166 case ACL_LINK:
1167 return l2cap_connect_ind(hdev, bdaddr);
1168
1169 case SCO_LINK:
1170 case ESCO_LINK:
1171 return sco_connect_ind(hdev, bdaddr, flags);
1172
1173 default:
1174 BT_ERR("unknown link type %d", type);
1175 return -EINVAL;
1176 }
1177}
1178
1179static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1180{
1181 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1182 return HCI_ERROR_REMOTE_USER_TERM;
1183
1184 return l2cap_disconn_ind(conn);
1185}
1186
1187/* ----- HCI callbacks ----- */
1188struct hci_cb {
1189 struct list_head list;
1190
1191 char *name;
1192
1193 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1194 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1195 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1196 __u8 encrypt);
1197 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1198 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1199};
1200
1201static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1202{
1203 struct hci_cb *cb;
1204
1205 mutex_lock(&hci_cb_list_lock);
1206 list_for_each_entry(cb, &hci_cb_list, list) {
1207 if (cb->connect_cfm)
1208 cb->connect_cfm(conn, status);
1209 }
1210 mutex_unlock(&hci_cb_list_lock);
1211
1212 if (conn->connect_cfm_cb)
1213 conn->connect_cfm_cb(conn, status);
1214}
1215
1216static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1217{
1218 struct hci_cb *cb;
1219
1220 mutex_lock(&hci_cb_list_lock);
1221 list_for_each_entry(cb, &hci_cb_list, list) {
1222 if (cb->disconn_cfm)
1223 cb->disconn_cfm(conn, reason);
1224 }
1225 mutex_unlock(&hci_cb_list_lock);
1226
1227 if (conn->disconn_cfm_cb)
1228 conn->disconn_cfm_cb(conn, reason);
1229}
1230
1231static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1232{
1233 struct hci_cb *cb;
1234 __u8 encrypt;
1235
1236 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1237 return;
1238
1239 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1240
1241 mutex_lock(&hci_cb_list_lock);
1242 list_for_each_entry(cb, &hci_cb_list, list) {
1243 if (cb->security_cfm)
1244 cb->security_cfm(conn, status, encrypt);
1245 }
1246 mutex_unlock(&hci_cb_list_lock);
1247
1248 if (conn->security_cfm_cb)
1249 conn->security_cfm_cb(conn, status);
1250}
1251
1252static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1253 __u8 encrypt)
1254{
1255 struct hci_cb *cb;
1256
1257 if (conn->sec_level == BT_SECURITY_SDP)
1258 conn->sec_level = BT_SECURITY_LOW;
1259
1260 if (conn->pending_sec_level > conn->sec_level)
1261 conn->sec_level = conn->pending_sec_level;
1262
1263 mutex_lock(&hci_cb_list_lock);
1264 list_for_each_entry(cb, &hci_cb_list, list) {
1265 if (cb->security_cfm)
1266 cb->security_cfm(conn, status, encrypt);
1267 }
1268 mutex_unlock(&hci_cb_list_lock);
1269
1270 if (conn->security_cfm_cb)
1271 conn->security_cfm_cb(conn, status);
1272}
1273
1274static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1275{
1276 struct hci_cb *cb;
1277
1278 mutex_lock(&hci_cb_list_lock);
1279 list_for_each_entry(cb, &hci_cb_list, list) {
1280 if (cb->key_change_cfm)
1281 cb->key_change_cfm(conn, status);
1282 }
1283 mutex_unlock(&hci_cb_list_lock);
1284}
1285
1286static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1287 __u8 role)
1288{
1289 struct hci_cb *cb;
1290
1291 mutex_lock(&hci_cb_list_lock);
1292 list_for_each_entry(cb, &hci_cb_list, list) {
1293 if (cb->role_switch_cfm)
1294 cb->role_switch_cfm(conn, status, role);
1295 }
1296 mutex_unlock(&hci_cb_list_lock);
1297}
1298
1299static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1300 size_t *data_len)
1301{
1302 size_t parsed = 0;
1303
1304 if (eir_len < 2)
1305 return NULL;
1306
1307 while (parsed < eir_len - 1) {
1308 u8 field_len = eir[0];
1309
1310 if (field_len == 0)
1311 break;
1312
1313 parsed += field_len + 1;
1314
1315 if (parsed > eir_len)
1316 break;
1317
1318 if (eir[1] != type) {
1319 eir += field_len + 1;
1320 continue;
1321 }
1322
1323 /* Zero length data */
1324 if (field_len == 1)
1325 return NULL;
1326
1327 if (data_len)
1328 *data_len = field_len - 1;
1329
1330 return &eir[2];
1331 }
1332
1333 return NULL;
1334}
1335
1336static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1337{
1338 if (addr_type != ADDR_LE_DEV_RANDOM)
1339 return false;
1340
1341 if ((bdaddr->b[5] & 0xc0) == 0x40)
1342 return true;
1343
1344 return false;
1345}
1346
1347static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1348{
1349 if (addr_type == ADDR_LE_DEV_PUBLIC)
1350 return true;
1351
1352 /* Check for Random Static address type */
1353 if ((addr->b[5] & 0xc0) == 0xc0)
1354 return true;
1355
1356 return false;
1357}
1358
1359static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1360 bdaddr_t *bdaddr, u8 addr_type)
1361{
1362 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1363 return NULL;
1364
1365 return hci_find_irk_by_rpa(hdev, bdaddr);
1366}
1367
1368static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1369 u16 to_multiplier)
1370{
1371 u16 max_latency;
1372
1373 if (min > max || min < 6 || max > 3200)
1374 return -EINVAL;
1375
1376 if (to_multiplier < 10 || to_multiplier > 3200)
1377 return -EINVAL;
1378
1379 if (max >= to_multiplier * 8)
1380 return -EINVAL;
1381
1382 max_latency = (to_multiplier * 4 / max) - 1;
1383 if (latency > 499 || latency > max_latency)
1384 return -EINVAL;
1385
1386 return 0;
1387}
1388
1389int hci_register_cb(struct hci_cb *hcb);
1390int hci_unregister_cb(struct hci_cb *hcb);
1391
1392struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u32 timeout);
1394struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1395 const void *param, u8 event, u32 timeout);
1396
1397int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1398 const void *param);
1399void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1400void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1401
1402void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1403
1404struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1405 const void *param, u32 timeout);
1406
1407/* ----- HCI Sockets ----- */
1408void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1409void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1410 int flag, struct sock *skip_sk);
1411void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1412void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1413 void *data, u16 data_len, ktime_t tstamp,
1414 int flag, struct sock *skip_sk);
1415
1416void hci_sock_dev_event(struct hci_dev *hdev, int event);
1417
1418#define HCI_MGMT_VAR_LEN BIT(0)
1419#define HCI_MGMT_NO_HDEV BIT(1)
1420#define HCI_MGMT_UNTRUSTED BIT(2)
1421#define HCI_MGMT_UNCONFIGURED BIT(3)
1422
1423struct hci_mgmt_handler {
1424 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1425 u16 data_len);
1426 size_t data_len;
1427 unsigned long flags;
1428};
1429
1430struct hci_mgmt_chan {
1431 struct list_head list;
1432 unsigned short channel;
1433 size_t handler_count;
1434 const struct hci_mgmt_handler *handlers;
1435 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1436};
1437
1438int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1439void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1440
1441/* Management interface */
1442#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1443#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1444 BIT(BDADDR_LE_RANDOM))
1445#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1446 BIT(BDADDR_LE_PUBLIC) | \
1447 BIT(BDADDR_LE_RANDOM))
1448
1449/* These LE scan and inquiry parameters were chosen according to LE General
1450 * Discovery Procedure specification.
1451 */
1452#define DISCOV_LE_SCAN_WIN 0x12
1453#define DISCOV_LE_SCAN_INT 0x12
1454#define DISCOV_LE_TIMEOUT 10240 /* msec */
1455#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1456#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1457#define DISCOV_BREDR_INQUIRY_LEN 0x08
1458#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1459
1460void mgmt_fill_version_info(void *ver);
1461int mgmt_new_settings(struct hci_dev *hdev);
1462void mgmt_index_added(struct hci_dev *hdev);
1463void mgmt_index_removed(struct hci_dev *hdev);
1464void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1465void mgmt_power_on(struct hci_dev *hdev, int err);
1466void __mgmt_power_off(struct hci_dev *hdev);
1467void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1468 bool persistent);
1469void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1470 u32 flags, u8 *name, u8 name_len);
1471void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1472 u8 link_type, u8 addr_type, u8 reason,
1473 bool mgmt_connected);
1474void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1475 u8 link_type, u8 addr_type, u8 status);
1476void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1477 u8 addr_type, u8 status);
1478void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1479void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 u8 status);
1481void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 status);
1483int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1484 u8 link_type, u8 addr_type, u32 value,
1485 u8 confirm_hint);
1486int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type, u8 status);
1490int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type);
1492int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u8 status);
1496int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1497 u8 link_type, u8 addr_type, u32 passkey,
1498 u8 entered);
1499void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1500void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1501void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1502void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1503 u8 status);
1504void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1505void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1506void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1507void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1508 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1509 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1510void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1511 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1512void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1513bool mgmt_powering_down(struct hci_dev *hdev);
1514void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1515void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1516void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1517 bool persistent);
1518void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1519 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1520 u16 max_interval, u16 latency, u16 timeout);
1521void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1522bool mgmt_get_connectable(struct hci_dev *hdev);
1523void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1524void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1525u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1526void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1527 u8 instance);
1528void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1529 u8 instance);
1530
1531u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1532 u16 to_multiplier);
1533void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1534 __u8 ltk[16], __u8 key_size);
1535
1536void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1537 u8 *bdaddr_type);
1538
1539#define SCO_AIRMODE_MASK 0x0003
1540#define SCO_AIRMODE_CVSD 0x0000
1541#define SCO_AIRMODE_TRANSP 0x0003
1542
1543#endif /* __HCI_CORE_H */
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
28#include <net/bluetooth/hci.h>
29
30/* HCI priority */
31#define HCI_PRIO_MAX 7
32
33/* HCI Core structures */
34struct inquiry_data {
35 bdaddr_t bdaddr;
36 __u8 pscan_rep_mode;
37 __u8 pscan_period_mode;
38 __u8 pscan_mode;
39 __u8 dev_class[3];
40 __le16 clock_offset;
41 __s8 rssi;
42 __u8 ssp_mode;
43};
44
45struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
48 enum {
49 NAME_NOT_KNOWN,
50 NAME_NEEDED,
51 NAME_PENDING,
52 NAME_KNOWN,
53 } name_state;
54 __u32 timestamp;
55 struct inquiry_data data;
56};
57
58struct discovery_state {
59 int type;
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_FINDING,
64 DISCOVERY_RESOLVING,
65 DISCOVERY_STOPPING,
66 } state;
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
70 __u32 timestamp;
71};
72
73struct hci_conn_hash {
74 struct list_head list;
75 unsigned int acl_num;
76 unsigned int amp_num;
77 unsigned int sco_num;
78 unsigned int le_num;
79};
80
81struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84 u8 bdaddr_type;
85};
86
87struct bt_uuid {
88 struct list_head list;
89 u8 uuid[16];
90 u8 size;
91 u8 svc_hint;
92};
93
94struct smp_csrk {
95 bdaddr_t bdaddr;
96 u8 bdaddr_type;
97 u8 master;
98 u8 val[16];
99};
100
101struct smp_ltk {
102 struct list_head list;
103 bdaddr_t bdaddr;
104 u8 bdaddr_type;
105 u8 authenticated;
106 u8 type;
107 u8 enc_size;
108 __le16 ediv;
109 __le64 rand;
110 u8 val[16];
111};
112
113struct smp_irk {
114 struct list_head list;
115 bdaddr_t rpa;
116 bdaddr_t bdaddr;
117 u8 addr_type;
118 u8 val[16];
119};
120
121struct link_key {
122 struct list_head list;
123 bdaddr_t bdaddr;
124 u8 type;
125 u8 val[HCI_LINK_KEY_SIZE];
126 u8 pin_len;
127};
128
129struct oob_data {
130 struct list_head list;
131 bdaddr_t bdaddr;
132 u8 hash192[16];
133 u8 randomizer192[16];
134 u8 hash256[16];
135 u8 randomizer256[16];
136};
137
138#define HCI_MAX_SHORT_NAME_LENGTH 10
139
140/* Default LE RPA expiry time, 15 minutes */
141#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
142
143struct amp_assoc {
144 __u16 len;
145 __u16 offset;
146 __u16 rem_len;
147 __u16 len_so_far;
148 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
149};
150
151#define HCI_MAX_PAGES 3
152
153#define NUM_REASSEMBLY 4
154struct hci_dev {
155 struct list_head list;
156 struct mutex lock;
157
158 char name[8];
159 unsigned long flags;
160 __u16 id;
161 __u8 bus;
162 __u8 dev_type;
163 bdaddr_t bdaddr;
164 bdaddr_t random_addr;
165 bdaddr_t static_addr;
166 __u8 adv_addr_type;
167 __u8 dev_name[HCI_MAX_NAME_LENGTH];
168 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
169 __u8 eir[HCI_MAX_EIR_LENGTH];
170 __u8 dev_class[3];
171 __u8 major_class;
172 __u8 minor_class;
173 __u8 max_page;
174 __u8 features[HCI_MAX_PAGES][8];
175 __u8 le_features[8];
176 __u8 le_white_list_size;
177 __u8 le_states[8];
178 __u8 commands[64];
179 __u8 hci_ver;
180 __u16 hci_rev;
181 __u8 lmp_ver;
182 __u16 manufacturer;
183 __u16 lmp_subver;
184 __u16 voice_setting;
185 __u8 num_iac;
186 __u8 io_capability;
187 __s8 inq_tx_power;
188 __u16 page_scan_interval;
189 __u16 page_scan_window;
190 __u8 page_scan_type;
191 __u8 le_adv_channel_map;
192 __u8 le_scan_type;
193 __u16 le_scan_interval;
194 __u16 le_scan_window;
195 __u16 le_conn_min_interval;
196 __u16 le_conn_max_interval;
197 __u8 ssp_debug_mode;
198
199 __u16 devid_source;
200 __u16 devid_vendor;
201 __u16 devid_product;
202 __u16 devid_version;
203
204 __u16 pkt_type;
205 __u16 esco_type;
206 __u16 link_policy;
207 __u16 link_mode;
208
209 __u32 idle_timeout;
210 __u16 sniff_min_interval;
211 __u16 sniff_max_interval;
212
213 __u8 amp_status;
214 __u32 amp_total_bw;
215 __u32 amp_max_bw;
216 __u32 amp_min_latency;
217 __u32 amp_max_pdu;
218 __u8 amp_type;
219 __u16 amp_pal_cap;
220 __u16 amp_assoc_size;
221 __u32 amp_max_flush_to;
222 __u32 amp_be_flush_to;
223
224 struct amp_assoc loc_assoc;
225
226 __u8 flow_ctl_mode;
227
228 unsigned int auto_accept_delay;
229
230 unsigned long quirks;
231
232 atomic_t cmd_cnt;
233 unsigned int acl_cnt;
234 unsigned int sco_cnt;
235 unsigned int le_cnt;
236
237 unsigned int acl_mtu;
238 unsigned int sco_mtu;
239 unsigned int le_mtu;
240 unsigned int acl_pkts;
241 unsigned int sco_pkts;
242 unsigned int le_pkts;
243
244 __u16 block_len;
245 __u16 block_mtu;
246 __u16 num_blocks;
247 __u16 block_cnt;
248
249 unsigned long acl_last_tx;
250 unsigned long sco_last_tx;
251 unsigned long le_last_tx;
252
253 struct workqueue_struct *workqueue;
254 struct workqueue_struct *req_workqueue;
255
256 struct work_struct power_on;
257 struct delayed_work power_off;
258
259 __u16 discov_timeout;
260 struct delayed_work discov_off;
261
262 struct delayed_work service_cache;
263
264 struct timer_list cmd_timer;
265
266 struct work_struct rx_work;
267 struct work_struct cmd_work;
268 struct work_struct tx_work;
269
270 struct sk_buff_head rx_q;
271 struct sk_buff_head raw_q;
272 struct sk_buff_head cmd_q;
273
274 struct sk_buff *recv_evt;
275 struct sk_buff *sent_cmd;
276 struct sk_buff *reassembly[NUM_REASSEMBLY];
277
278 struct mutex req_lock;
279 wait_queue_head_t req_wait_q;
280 __u32 req_status;
281 __u32 req_result;
282
283 struct crypto_blkcipher *tfm_aes;
284
285 struct discovery_state discovery;
286 struct hci_conn_hash conn_hash;
287
288 struct list_head mgmt_pending;
289 struct list_head blacklist;
290 struct list_head uuids;
291 struct list_head link_keys;
292 struct list_head long_term_keys;
293 struct list_head identity_resolving_keys;
294 struct list_head remote_oob_data;
295 struct list_head le_white_list;
296 struct list_head le_conn_params;
297 struct list_head pend_le_conns;
298
299 struct hci_dev_stats stat;
300
301 atomic_t promisc;
302
303 struct dentry *debugfs;
304
305 struct device dev;
306
307 struct rfkill *rfkill;
308
309 unsigned long dev_flags;
310
311 struct delayed_work le_scan_disable;
312
313 __s8 adv_tx_power;
314 __u8 adv_data[HCI_MAX_AD_LENGTH];
315 __u8 adv_data_len;
316 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
317 __u8 scan_rsp_data_len;
318
319 __u8 irk[16];
320 __u32 rpa_timeout;
321 struct delayed_work rpa_expired;
322 bdaddr_t rpa;
323
324 int (*open)(struct hci_dev *hdev);
325 int (*close)(struct hci_dev *hdev);
326 int (*flush)(struct hci_dev *hdev);
327 int (*setup)(struct hci_dev *hdev);
328 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
329 void (*notify)(struct hci_dev *hdev, unsigned int evt);
330};
331
332#define HCI_PHY_HANDLE(handle) (handle & 0xff)
333
334struct hci_conn {
335 struct list_head list;
336
337 atomic_t refcnt;
338
339 bdaddr_t dst;
340 __u8 dst_type;
341 bdaddr_t src;
342 __u8 src_type;
343 bdaddr_t init_addr;
344 __u8 init_addr_type;
345 bdaddr_t resp_addr;
346 __u8 resp_addr_type;
347 __u16 handle;
348 __u16 state;
349 __u8 mode;
350 __u8 type;
351 bool out;
352 __u8 attempt;
353 __u8 dev_class[3];
354 __u8 features[HCI_MAX_PAGES][8];
355 __u16 pkt_type;
356 __u16 link_policy;
357 __u32 link_mode;
358 __u8 key_type;
359 __u8 auth_type;
360 __u8 sec_level;
361 __u8 pending_sec_level;
362 __u8 pin_length;
363 __u8 enc_key_size;
364 __u8 io_capability;
365 __u32 passkey_notify;
366 __u8 passkey_entered;
367 __u16 disc_timeout;
368 __u16 setting;
369 __u16 le_conn_min_interval;
370 __u16 le_conn_max_interval;
371 unsigned long flags;
372
373 __u8 remote_cap;
374 __u8 remote_auth;
375 __u8 remote_id;
376 bool flush_key;
377
378 unsigned int sent;
379
380 struct sk_buff_head data_q;
381 struct list_head chan_list;
382
383 struct delayed_work disc_work;
384 struct delayed_work auto_accept_work;
385 struct delayed_work idle_work;
386 struct delayed_work le_conn_timeout;
387
388 struct device dev;
389
390 struct hci_dev *hdev;
391 void *l2cap_data;
392 void *sco_data;
393 void *smp_conn;
394 struct amp_mgr *amp_mgr;
395
396 struct hci_conn *link;
397
398 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
399 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
400 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
401};
402
403struct hci_chan {
404 struct list_head list;
405 __u16 handle;
406 struct hci_conn *conn;
407 struct sk_buff_head data_q;
408 unsigned int sent;
409 __u8 state;
410};
411
412struct hci_conn_params {
413 struct list_head list;
414
415 bdaddr_t addr;
416 u8 addr_type;
417
418 u16 conn_min_interval;
419 u16 conn_max_interval;
420
421 enum {
422 HCI_AUTO_CONN_DISABLED,
423 HCI_AUTO_CONN_ALWAYS,
424 HCI_AUTO_CONN_LINK_LOSS,
425 } auto_connect;
426};
427
428extern struct list_head hci_dev_list;
429extern struct list_head hci_cb_list;
430extern rwlock_t hci_dev_list_lock;
431extern rwlock_t hci_cb_list_lock;
432
433/* ----- HCI interface to upper protocols ----- */
434int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
435void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
436int l2cap_disconn_ind(struct hci_conn *hcon);
437void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
438int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
439int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
440
441int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
442void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
443void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
444int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
445
446/* ----- Inquiry cache ----- */
447#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
448#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
449
450static inline void discovery_init(struct hci_dev *hdev)
451{
452 hdev->discovery.state = DISCOVERY_STOPPED;
453 INIT_LIST_HEAD(&hdev->discovery.all);
454 INIT_LIST_HEAD(&hdev->discovery.unknown);
455 INIT_LIST_HEAD(&hdev->discovery.resolve);
456}
457
458bool hci_discovery_active(struct hci_dev *hdev);
459
460void hci_discovery_set_state(struct hci_dev *hdev, int state);
461
462static inline int inquiry_cache_empty(struct hci_dev *hdev)
463{
464 return list_empty(&hdev->discovery.all);
465}
466
467static inline long inquiry_cache_age(struct hci_dev *hdev)
468{
469 struct discovery_state *c = &hdev->discovery;
470 return jiffies - c->timestamp;
471}
472
473static inline long inquiry_entry_age(struct inquiry_entry *e)
474{
475 return jiffies - e->timestamp;
476}
477
478struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
479 bdaddr_t *bdaddr);
480struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
481 bdaddr_t *bdaddr);
482struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
483 bdaddr_t *bdaddr,
484 int state);
485void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
486 struct inquiry_entry *ie);
487bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
488 bool name_known, bool *ssp);
489void hci_inquiry_cache_flush(struct hci_dev *hdev);
490
491/* ----- HCI Connections ----- */
492enum {
493 HCI_CONN_AUTH_PEND,
494 HCI_CONN_REAUTH_PEND,
495 HCI_CONN_ENCRYPT_PEND,
496 HCI_CONN_RSWITCH_PEND,
497 HCI_CONN_MODE_CHANGE_PEND,
498 HCI_CONN_SCO_SETUP_PEND,
499 HCI_CONN_LE_SMP_PEND,
500 HCI_CONN_MGMT_CONNECTED,
501 HCI_CONN_SSP_ENABLED,
502 HCI_CONN_SC_ENABLED,
503 HCI_CONN_AES_CCM,
504 HCI_CONN_POWER_SAVE,
505 HCI_CONN_REMOTE_OOB,
506 HCI_CONN_6LOWPAN,
507};
508
509static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
510{
511 struct hci_dev *hdev = conn->hdev;
512 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
513 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
514}
515
516static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
517{
518 struct hci_dev *hdev = conn->hdev;
519 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
520 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
521}
522
523static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
524{
525 struct hci_conn_hash *h = &hdev->conn_hash;
526 list_add_rcu(&c->list, &h->list);
527 switch (c->type) {
528 case ACL_LINK:
529 h->acl_num++;
530 break;
531 case AMP_LINK:
532 h->amp_num++;
533 break;
534 case LE_LINK:
535 h->le_num++;
536 break;
537 case SCO_LINK:
538 case ESCO_LINK:
539 h->sco_num++;
540 break;
541 }
542}
543
544static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
545{
546 struct hci_conn_hash *h = &hdev->conn_hash;
547
548 list_del_rcu(&c->list);
549 synchronize_rcu();
550
551 switch (c->type) {
552 case ACL_LINK:
553 h->acl_num--;
554 break;
555 case AMP_LINK:
556 h->amp_num--;
557 break;
558 case LE_LINK:
559 h->le_num--;
560 break;
561 case SCO_LINK:
562 case ESCO_LINK:
563 h->sco_num--;
564 break;
565 }
566}
567
568static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
569{
570 struct hci_conn_hash *h = &hdev->conn_hash;
571 switch (type) {
572 case ACL_LINK:
573 return h->acl_num;
574 case AMP_LINK:
575 return h->amp_num;
576 case LE_LINK:
577 return h->le_num;
578 case SCO_LINK:
579 case ESCO_LINK:
580 return h->sco_num;
581 default:
582 return 0;
583 }
584}
585
586static inline unsigned int hci_conn_count(struct hci_dev *hdev)
587{
588 struct hci_conn_hash *c = &hdev->conn_hash;
589
590 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
591}
592
593static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
594 __u16 handle)
595{
596 struct hci_conn_hash *h = &hdev->conn_hash;
597 struct hci_conn *c;
598
599 rcu_read_lock();
600
601 list_for_each_entry_rcu(c, &h->list, list) {
602 if (c->handle == handle) {
603 rcu_read_unlock();
604 return c;
605 }
606 }
607 rcu_read_unlock();
608
609 return NULL;
610}
611
612static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
613 __u8 type, bdaddr_t *ba)
614{
615 struct hci_conn_hash *h = &hdev->conn_hash;
616 struct hci_conn *c;
617
618 rcu_read_lock();
619
620 list_for_each_entry_rcu(c, &h->list, list) {
621 if (c->type == type && !bacmp(&c->dst, ba)) {
622 rcu_read_unlock();
623 return c;
624 }
625 }
626
627 rcu_read_unlock();
628
629 return NULL;
630}
631
632static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
633 __u8 type, __u16 state)
634{
635 struct hci_conn_hash *h = &hdev->conn_hash;
636 struct hci_conn *c;
637
638 rcu_read_lock();
639
640 list_for_each_entry_rcu(c, &h->list, list) {
641 if (c->type == type && c->state == state) {
642 rcu_read_unlock();
643 return c;
644 }
645 }
646
647 rcu_read_unlock();
648
649 return NULL;
650}
651
652void hci_disconnect(struct hci_conn *conn, __u8 reason);
653bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
654void hci_sco_setup(struct hci_conn *conn, __u8 status);
655
656struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
657int hci_conn_del(struct hci_conn *conn);
658void hci_conn_hash_flush(struct hci_dev *hdev);
659void hci_conn_check_pending(struct hci_dev *hdev);
660
661struct hci_chan *hci_chan_create(struct hci_conn *conn);
662void hci_chan_del(struct hci_chan *chan);
663void hci_chan_list_flush(struct hci_conn *conn);
664struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
665
666struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
667 u8 dst_type, u8 sec_level, u8 auth_type);
668struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
669 u8 sec_level, u8 auth_type);
670struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
671 __u16 setting);
672int hci_conn_check_link_mode(struct hci_conn *conn);
673int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
674int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
675int hci_conn_change_link_key(struct hci_conn *conn);
676int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
677
678void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
679
680void hci_le_conn_failed(struct hci_conn *conn, u8 status);
681
682/*
683 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
684 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
685 * working or anything else. They just guarantee that the object is available
686 * and can be dereferenced. So you can use its locks, local variables and any
687 * other constant data.
688 * Before accessing runtime data, you _must_ lock the object and then check that
689 * it is still running. As soon as you release the locks, the connection might
690 * get dropped, though.
691 *
692 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
693 * how long the underlying connection is held. So every channel that runs on the
694 * hci_conn object calls this to prevent the connection from disappearing. As
695 * long as you hold a device, you must also guarantee that you have a valid
696 * reference to the device via hci_conn_get() (or the initial reference from
697 * hci_conn_add()).
698 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
699 * break because nobody cares for that. But this means, we cannot use
700 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
701 */
702
703static inline void hci_conn_get(struct hci_conn *conn)
704{
705 get_device(&conn->dev);
706}
707
708static inline void hci_conn_put(struct hci_conn *conn)
709{
710 put_device(&conn->dev);
711}
712
713static inline void hci_conn_hold(struct hci_conn *conn)
714{
715 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
716
717 atomic_inc(&conn->refcnt);
718 cancel_delayed_work(&conn->disc_work);
719}
720
721static inline void hci_conn_drop(struct hci_conn *conn)
722{
723 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
724
725 if (atomic_dec_and_test(&conn->refcnt)) {
726 unsigned long timeo;
727
728 switch (conn->type) {
729 case ACL_LINK:
730 case LE_LINK:
731 cancel_delayed_work(&conn->idle_work);
732 if (conn->state == BT_CONNECTED) {
733 timeo = conn->disc_timeout;
734 if (!conn->out)
735 timeo *= 2;
736 } else {
737 timeo = msecs_to_jiffies(10);
738 }
739 break;
740
741 case AMP_LINK:
742 timeo = conn->disc_timeout;
743 break;
744
745 default:
746 timeo = msecs_to_jiffies(10);
747 break;
748 }
749
750 cancel_delayed_work(&conn->disc_work);
751 queue_delayed_work(conn->hdev->workqueue,
752 &conn->disc_work, timeo);
753 }
754}
755
756/* ----- HCI Devices ----- */
757static inline void hci_dev_put(struct hci_dev *d)
758{
759 BT_DBG("%s orig refcnt %d", d->name,
760 atomic_read(&d->dev.kobj.kref.refcount));
761
762 put_device(&d->dev);
763}
764
765static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
766{
767 BT_DBG("%s orig refcnt %d", d->name,
768 atomic_read(&d->dev.kobj.kref.refcount));
769
770 get_device(&d->dev);
771 return d;
772}
773
774#define hci_dev_lock(d) mutex_lock(&d->lock)
775#define hci_dev_unlock(d) mutex_unlock(&d->lock)
776
777#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
778#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
779
780static inline void *hci_get_drvdata(struct hci_dev *hdev)
781{
782 return dev_get_drvdata(&hdev->dev);
783}
784
785static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
786{
787 dev_set_drvdata(&hdev->dev, data);
788}
789
790struct hci_dev *hci_dev_get(int index);
791struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
792
793struct hci_dev *hci_alloc_dev(void);
794void hci_free_dev(struct hci_dev *hdev);
795int hci_register_dev(struct hci_dev *hdev);
796void hci_unregister_dev(struct hci_dev *hdev);
797int hci_suspend_dev(struct hci_dev *hdev);
798int hci_resume_dev(struct hci_dev *hdev);
799int hci_dev_open(__u16 dev);
800int hci_dev_close(__u16 dev);
801int hci_dev_reset(__u16 dev);
802int hci_dev_reset_stat(__u16 dev);
803int hci_dev_cmd(unsigned int cmd, void __user *arg);
804int hci_get_dev_list(void __user *arg);
805int hci_get_dev_info(void __user *arg);
806int hci_get_conn_list(void __user *arg);
807int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
808int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
809int hci_inquiry(void __user *arg);
810
811struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
812 bdaddr_t *bdaddr, u8 type);
813int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
814int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
815
816struct bdaddr_list *hci_white_list_lookup(struct hci_dev *hdev,
817 bdaddr_t *bdaddr, u8 type);
818void hci_white_list_clear(struct hci_dev *hdev);
819int hci_white_list_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
820int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
821
822struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
823 bdaddr_t *addr, u8 addr_type);
824int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
825 u8 auto_connect, u16 conn_min_interval,
826 u16 conn_max_interval);
827void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
828void hci_conn_params_clear(struct hci_dev *hdev);
829
830struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
831 bdaddr_t *addr, u8 addr_type);
832void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
833void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
834void hci_pend_le_conns_clear(struct hci_dev *hdev);
835
836void hci_update_background_scan(struct hci_dev *hdev);
837
838void hci_uuids_clear(struct hci_dev *hdev);
839
840void hci_link_keys_clear(struct hci_dev *hdev);
841struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
842int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
843 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
844struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
845 bool master);
846struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
847 u8 addr_type, u8 type, u8 authenticated,
848 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
849struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
850 u8 addr_type, bool master);
851int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
852void hci_smp_ltks_clear(struct hci_dev *hdev);
853int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
854
855struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
856struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
857 u8 addr_type);
858struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
859 u8 addr_type, u8 val[16], bdaddr_t *rpa);
860void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
861void hci_smp_irks_clear(struct hci_dev *hdev);
862
863void hci_remote_oob_data_clear(struct hci_dev *hdev);
864struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
865 bdaddr_t *bdaddr);
866int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 u8 *hash, u8 *randomizer);
868int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
869 u8 *hash192, u8 *randomizer192,
870 u8 *hash256, u8 *randomizer256);
871int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
872
873void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
874
875int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
876int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
877int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
878
879void hci_init_sysfs(struct hci_dev *hdev);
880void hci_conn_init_sysfs(struct hci_conn *conn);
881void hci_conn_add_sysfs(struct hci_conn *conn);
882void hci_conn_del_sysfs(struct hci_conn *conn);
883
884#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
885
886/* ----- LMP capabilities ----- */
887#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
888#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
889#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
890#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
891#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
892#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
893#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
894#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
895#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
896#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
897#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
898#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
899#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
900#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
901#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
902#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
903#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
904#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
905#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
906
907/* ----- Extended LMP capabilities ----- */
908#define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
909#define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
910#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
911#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
912#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
913#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
914
915/* ----- Host capabilities ----- */
916#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
917#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
918#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
919#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
920
921/* ----- HCI protocols ----- */
922#define HCI_PROTO_DEFER 0x01
923
924static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
925 __u8 type, __u8 *flags)
926{
927 switch (type) {
928 case ACL_LINK:
929 return l2cap_connect_ind(hdev, bdaddr);
930
931 case SCO_LINK:
932 case ESCO_LINK:
933 return sco_connect_ind(hdev, bdaddr, flags);
934
935 default:
936 BT_ERR("unknown link type %d", type);
937 return -EINVAL;
938 }
939}
940
941static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
942{
943 switch (conn->type) {
944 case ACL_LINK:
945 case LE_LINK:
946 l2cap_connect_cfm(conn, status);
947 break;
948
949 case SCO_LINK:
950 case ESCO_LINK:
951 sco_connect_cfm(conn, status);
952 break;
953
954 default:
955 BT_ERR("unknown link type %d", conn->type);
956 break;
957 }
958
959 if (conn->connect_cfm_cb)
960 conn->connect_cfm_cb(conn, status);
961}
962
963static inline int hci_proto_disconn_ind(struct hci_conn *conn)
964{
965 if (conn->type != ACL_LINK && conn->type != LE_LINK)
966 return HCI_ERROR_REMOTE_USER_TERM;
967
968 return l2cap_disconn_ind(conn);
969}
970
971static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
972{
973 switch (conn->type) {
974 case ACL_LINK:
975 case LE_LINK:
976 l2cap_disconn_cfm(conn, reason);
977 break;
978
979 case SCO_LINK:
980 case ESCO_LINK:
981 sco_disconn_cfm(conn, reason);
982 break;
983
984 /* L2CAP would be handled for BREDR chan */
985 case AMP_LINK:
986 break;
987
988 default:
989 BT_ERR("unknown link type %d", conn->type);
990 break;
991 }
992
993 if (conn->disconn_cfm_cb)
994 conn->disconn_cfm_cb(conn, reason);
995}
996
997static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
998{
999 __u8 encrypt;
1000
1001 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1002 return;
1003
1004 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1005 return;
1006
1007 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1008 l2cap_security_cfm(conn, status, encrypt);
1009
1010 if (conn->security_cfm_cb)
1011 conn->security_cfm_cb(conn, status);
1012}
1013
1014static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1015 __u8 encrypt)
1016{
1017 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1018 return;
1019
1020 l2cap_security_cfm(conn, status, encrypt);
1021
1022 if (conn->security_cfm_cb)
1023 conn->security_cfm_cb(conn, status);
1024}
1025
1026/* ----- HCI callbacks ----- */
1027struct hci_cb {
1028 struct list_head list;
1029
1030 char *name;
1031
1032 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1033 __u8 encrypt);
1034 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1035 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1036};
1037
1038static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1039{
1040 struct hci_cb *cb;
1041 __u8 encrypt;
1042
1043 hci_proto_auth_cfm(conn, status);
1044
1045 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1046 return;
1047
1048 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
1049
1050 read_lock(&hci_cb_list_lock);
1051 list_for_each_entry(cb, &hci_cb_list, list) {
1052 if (cb->security_cfm)
1053 cb->security_cfm(conn, status, encrypt);
1054 }
1055 read_unlock(&hci_cb_list_lock);
1056}
1057
1058static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1059 __u8 encrypt)
1060{
1061 struct hci_cb *cb;
1062
1063 if (conn->sec_level == BT_SECURITY_SDP)
1064 conn->sec_level = BT_SECURITY_LOW;
1065
1066 if (conn->pending_sec_level > conn->sec_level)
1067 conn->sec_level = conn->pending_sec_level;
1068
1069 hci_proto_encrypt_cfm(conn, status, encrypt);
1070
1071 read_lock(&hci_cb_list_lock);
1072 list_for_each_entry(cb, &hci_cb_list, list) {
1073 if (cb->security_cfm)
1074 cb->security_cfm(conn, status, encrypt);
1075 }
1076 read_unlock(&hci_cb_list_lock);
1077}
1078
1079static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1080{
1081 struct hci_cb *cb;
1082
1083 read_lock(&hci_cb_list_lock);
1084 list_for_each_entry(cb, &hci_cb_list, list) {
1085 if (cb->key_change_cfm)
1086 cb->key_change_cfm(conn, status);
1087 }
1088 read_unlock(&hci_cb_list_lock);
1089}
1090
1091static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1092 __u8 role)
1093{
1094 struct hci_cb *cb;
1095
1096 read_lock(&hci_cb_list_lock);
1097 list_for_each_entry(cb, &hci_cb_list, list) {
1098 if (cb->role_switch_cfm)
1099 cb->role_switch_cfm(conn, status, role);
1100 }
1101 read_unlock(&hci_cb_list_lock);
1102}
1103
1104static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1105{
1106 size_t parsed = 0;
1107
1108 if (data_len < 2)
1109 return false;
1110
1111 while (parsed < data_len - 1) {
1112 u8 field_len = data[0];
1113
1114 if (field_len == 0)
1115 break;
1116
1117 parsed += field_len + 1;
1118
1119 if (parsed > data_len)
1120 break;
1121
1122 if (data[1] == type)
1123 return true;
1124
1125 data += field_len + 1;
1126 }
1127
1128 return false;
1129}
1130
1131static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1132{
1133 if (addr_type != 0x01)
1134 return false;
1135
1136 if ((bdaddr->b[5] & 0xc0) == 0x40)
1137 return true;
1138
1139 return false;
1140}
1141
1142static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1143 bdaddr_t *bdaddr, u8 addr_type)
1144{
1145 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1146 return NULL;
1147
1148 return hci_find_irk_by_rpa(hdev, bdaddr);
1149}
1150
1151int hci_register_cb(struct hci_cb *hcb);
1152int hci_unregister_cb(struct hci_cb *hcb);
1153
1154struct hci_request {
1155 struct hci_dev *hdev;
1156 struct sk_buff_head cmd_q;
1157
1158 /* If something goes wrong when building the HCI request, the error
1159 * value is stored in this field.
1160 */
1161 int err;
1162};
1163
1164void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1165int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1166void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1167 const void *param);
1168void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1169 const void *param, u8 event);
1170void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1171
1172void hci_req_add_le_scan_disable(struct hci_request *req);
1173void hci_req_add_le_passive_scan(struct hci_request *req);
1174
1175struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1176 const void *param, u32 timeout);
1177struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1178 const void *param, u8 event, u32 timeout);
1179
1180int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1181 const void *param);
1182void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1183void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1184
1185void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1186
1187/* ----- HCI Sockets ----- */
1188void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1189void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1190void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1191
1192void hci_sock_dev_event(struct hci_dev *hdev, int event);
1193
1194/* Management interface */
1195#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1196#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1197 BIT(BDADDR_LE_RANDOM))
1198#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1199 BIT(BDADDR_LE_PUBLIC) | \
1200 BIT(BDADDR_LE_RANDOM))
1201
1202/* These LE scan and inquiry parameters were chosen according to LE General
1203 * Discovery Procedure specification.
1204 */
1205#define DISCOV_LE_SCAN_WIN 0x12
1206#define DISCOV_LE_SCAN_INT 0x12
1207#define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1208#define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1209#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1210#define DISCOV_BREDR_INQUIRY_LEN 0x08
1211
1212int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1213void mgmt_index_added(struct hci_dev *hdev);
1214void mgmt_index_removed(struct hci_dev *hdev);
1215void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1216int mgmt_powered(struct hci_dev *hdev, u8 powered);
1217void mgmt_discoverable_timeout(struct hci_dev *hdev);
1218void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1219void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1220void mgmt_advertising(struct hci_dev *hdev, u8 advertising);
1221void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1222void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1223 bool persistent);
1224void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1225 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1226 u8 *dev_class);
1227void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1228 u8 link_type, u8 addr_type, u8 reason,
1229 bool mgmt_connected);
1230void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1231 u8 link_type, u8 addr_type, u8 status);
1232void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1233 u8 addr_type, u8 status);
1234void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1235void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1236 u8 status);
1237void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1238 u8 status);
1239int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1240 u8 link_type, u8 addr_type, u32 value,
1241 u8 confirm_hint);
1242int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1243 u8 link_type, u8 addr_type, u8 status);
1244int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1245 u8 link_type, u8 addr_type, u8 status);
1246int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1247 u8 link_type, u8 addr_type);
1248int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1249 u8 link_type, u8 addr_type, u8 status);
1250int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1251 u8 link_type, u8 addr_type, u8 status);
1252int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1253 u8 link_type, u8 addr_type, u32 passkey,
1254 u8 entered);
1255void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1256 u8 addr_type, u8 status);
1257void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1258void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1259void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1260void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1261 u8 status);
1262void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1263void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1264 u8 *randomizer192, u8 *hash256,
1265 u8 *randomizer256, u8 status);
1266void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1267 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1268 u8 ssp, u8 *eir, u16 eir_len);
1269void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1270 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1271void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1272int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1273int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1274void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1275void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1276void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1277 bool persistent);
1278void mgmt_reenable_advertising(struct hci_dev *hdev);
1279void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1280
1281/* HCI info for socket */
1282#define hci_pi(sk) ((struct hci_pinfo *) sk)
1283
1284struct hci_pinfo {
1285 struct bt_sock bt;
1286 struct hci_dev *hdev;
1287 struct hci_filter filter;
1288 __u32 cmsg_mask;
1289 unsigned short channel;
1290};
1291
1292/* HCI security filter */
1293#define HCI_SFLT_MAX_OGF 5
1294
1295struct hci_sec_filter {
1296 __u32 type_mask;
1297 __u32 event_mask[2];
1298 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1299};
1300
1301/* ----- HCI requests ----- */
1302#define HCI_REQ_DONE 0
1303#define HCI_REQ_PEND 1
1304#define HCI_REQ_CANCELED 2
1305
1306#define hci_req_lock(d) mutex_lock(&d->req_lock)
1307#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1308
1309void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1310 u16 latency, u16 to_multiplier);
1311void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1312 __u8 ltk[16]);
1313
1314int hci_update_random_address(struct hci_request *req, bool require_privacy,
1315 u8 *own_addr_type);
1316void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1317 u8 *bdaddr_type);
1318
1319#define SCO_AIRMODE_MASK 0x0003
1320#define SCO_AIRMODE_CVSD 0x0000
1321#define SCO_AIRMODE_TRANSP 0x0003
1322
1323#endif /* __HCI_CORE_H */