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Bluetooth: Implement deferred sco socket setup
[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 <net/bluetooth/hci.h>
29
30 /* HCI priority */
31 #define HCI_PRIO_MAX 7
32
33 /* HCI Core structures */
34 struct 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
45 struct 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
58 struct 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
73 struct 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
81 struct bdaddr_list {
82 struct list_head list;
83 bdaddr_t bdaddr;
84 };
85
86 struct bt_uuid {
87 struct list_head list;
88 u8 uuid[16];
89 u8 svc_hint;
90 };
91
92 struct smp_ltk {
93 struct list_head list;
94 bdaddr_t bdaddr;
95 u8 bdaddr_type;
96 u8 authenticated;
97 u8 type;
98 u8 enc_size;
99 __le16 ediv;
100 u8 rand[8];
101 u8 val[16];
102 } __packed;
103
104 struct link_key {
105 struct list_head list;
106 bdaddr_t bdaddr;
107 u8 type;
108 u8 val[HCI_LINK_KEY_SIZE];
109 u8 pin_len;
110 };
111
112 struct oob_data {
113 struct list_head list;
114 bdaddr_t bdaddr;
115 u8 hash[16];
116 u8 randomizer[16];
117 };
118
119 struct le_scan_params {
120 u8 type;
121 u16 interval;
122 u16 window;
123 int timeout;
124 };
125
126 #define HCI_MAX_SHORT_NAME_LENGTH 10
127
128 struct amp_assoc {
129 __u16 len;
130 __u16 offset;
131 __u16 rem_len;
132 __u16 len_so_far;
133 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
134 };
135
136 #define NUM_REASSEMBLY 4
137 struct hci_dev {
138 struct list_head list;
139 struct mutex lock;
140
141 char name[8];
142 unsigned long flags;
143 __u16 id;
144 __u8 bus;
145 __u8 dev_type;
146 bdaddr_t bdaddr;
147 __u8 dev_name[HCI_MAX_NAME_LENGTH];
148 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
149 __u8 eir[HCI_MAX_EIR_LENGTH];
150 __u8 dev_class[3];
151 __u8 major_class;
152 __u8 minor_class;
153 __u8 features[8];
154 __u8 host_features[8];
155 __u8 commands[64];
156 __u8 hci_ver;
157 __u16 hci_rev;
158 __u8 lmp_ver;
159 __u16 manufacturer;
160 __u16 lmp_subver;
161 __u16 voice_setting;
162 __u8 io_capability;
163 __s8 inq_tx_power;
164 __u16 devid_source;
165 __u16 devid_vendor;
166 __u16 devid_product;
167 __u16 devid_version;
168
169 __u16 pkt_type;
170 __u16 esco_type;
171 __u16 link_policy;
172 __u16 link_mode;
173
174 __u32 idle_timeout;
175 __u16 sniff_min_interval;
176 __u16 sniff_max_interval;
177
178 __u8 amp_status;
179 __u32 amp_total_bw;
180 __u32 amp_max_bw;
181 __u32 amp_min_latency;
182 __u32 amp_max_pdu;
183 __u8 amp_type;
184 __u16 amp_pal_cap;
185 __u16 amp_assoc_size;
186 __u32 amp_max_flush_to;
187 __u32 amp_be_flush_to;
188
189 struct amp_assoc loc_assoc;
190
191 __u8 flow_ctl_mode;
192
193 unsigned int auto_accept_delay;
194
195 unsigned long quirks;
196
197 atomic_t cmd_cnt;
198 unsigned int acl_cnt;
199 unsigned int sco_cnt;
200 unsigned int le_cnt;
201
202 unsigned int acl_mtu;
203 unsigned int sco_mtu;
204 unsigned int le_mtu;
205 unsigned int acl_pkts;
206 unsigned int sco_pkts;
207 unsigned int le_pkts;
208
209 __u16 block_len;
210 __u16 block_mtu;
211 __u16 num_blocks;
212 __u16 block_cnt;
213
214 unsigned long acl_last_tx;
215 unsigned long sco_last_tx;
216 unsigned long le_last_tx;
217
218 struct workqueue_struct *workqueue;
219
220 struct work_struct power_on;
221 struct delayed_work power_off;
222
223 __u16 discov_timeout;
224 struct delayed_work discov_off;
225
226 struct delayed_work service_cache;
227
228 struct timer_list cmd_timer;
229
230 struct work_struct rx_work;
231 struct work_struct cmd_work;
232 struct work_struct tx_work;
233
234 struct sk_buff_head rx_q;
235 struct sk_buff_head raw_q;
236 struct sk_buff_head cmd_q;
237
238 struct sk_buff *sent_cmd;
239 struct sk_buff *reassembly[NUM_REASSEMBLY];
240
241 struct mutex req_lock;
242 wait_queue_head_t req_wait_q;
243 __u32 req_status;
244 __u32 req_result;
245
246 __u16 init_last_cmd;
247
248 struct list_head mgmt_pending;
249
250 struct discovery_state discovery;
251 struct hci_conn_hash conn_hash;
252 struct list_head blacklist;
253
254 struct list_head uuids;
255
256 struct list_head link_keys;
257
258 struct list_head long_term_keys;
259
260 struct list_head remote_oob_data;
261
262 struct hci_dev_stats stat;
263
264 struct sk_buff_head driver_init;
265
266 atomic_t promisc;
267
268 struct dentry *debugfs;
269
270 struct device dev;
271
272 struct rfkill *rfkill;
273
274 unsigned long dev_flags;
275
276 struct delayed_work le_scan_disable;
277
278 struct work_struct le_scan;
279 struct le_scan_params le_scan_params;
280
281 __s8 adv_tx_power;
282 __u8 adv_data[HCI_MAX_AD_LENGTH];
283 __u8 adv_data_len;
284
285 int (*open)(struct hci_dev *hdev);
286 int (*close)(struct hci_dev *hdev);
287 int (*flush)(struct hci_dev *hdev);
288 int (*send)(struct sk_buff *skb);
289 void (*notify)(struct hci_dev *hdev, unsigned int evt);
290 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
291 };
292
293 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
294
295 struct hci_conn {
296 struct list_head list;
297
298 atomic_t refcnt;
299
300 bdaddr_t dst;
301 __u8 dst_type;
302 __u16 handle;
303 __u16 state;
304 __u8 mode;
305 __u8 type;
306 bool out;
307 __u8 attempt;
308 __u8 dev_class[3];
309 __u8 features[8];
310 __u16 interval;
311 __u16 pkt_type;
312 __u16 link_policy;
313 __u32 link_mode;
314 __u8 key_type;
315 __u8 auth_type;
316 __u8 sec_level;
317 __u8 pending_sec_level;
318 __u8 pin_length;
319 __u8 enc_key_size;
320 __u8 io_capability;
321 __u32 passkey_notify;
322 __u8 passkey_entered;
323 __u16 disc_timeout;
324 unsigned long flags;
325
326 __u8 remote_cap;
327 __u8 remote_auth;
328 __u8 remote_id;
329 bool flush_key;
330
331 unsigned int sent;
332
333 struct sk_buff_head data_q;
334 struct list_head chan_list;
335
336 struct delayed_work disc_work;
337 struct timer_list idle_timer;
338 struct timer_list auto_accept_timer;
339
340 struct device dev;
341 atomic_t devref;
342
343 struct hci_dev *hdev;
344 void *l2cap_data;
345 void *sco_data;
346 void *smp_conn;
347 struct amp_mgr *amp_mgr;
348
349 struct hci_conn *link;
350
351 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
352 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
353 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
354 };
355
356 struct hci_chan {
357 struct list_head list;
358 __u16 handle;
359 struct hci_conn *conn;
360 struct sk_buff_head data_q;
361 unsigned int sent;
362 __u8 state;
363 };
364
365 extern struct list_head hci_dev_list;
366 extern struct list_head hci_cb_list;
367 extern rwlock_t hci_dev_list_lock;
368 extern rwlock_t hci_cb_list_lock;
369
370 /* ----- HCI interface to upper protocols ----- */
371 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
372 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
373 extern int l2cap_disconn_ind(struct hci_conn *hcon);
374 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
375 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
376 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
377 u16 flags);
378
379 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
380 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
381 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
382 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
383
384 /* ----- Inquiry cache ----- */
385 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
386 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
387
388 static inline void discovery_init(struct hci_dev *hdev)
389 {
390 hdev->discovery.state = DISCOVERY_STOPPED;
391 INIT_LIST_HEAD(&hdev->discovery.all);
392 INIT_LIST_HEAD(&hdev->discovery.unknown);
393 INIT_LIST_HEAD(&hdev->discovery.resolve);
394 }
395
396 bool hci_discovery_active(struct hci_dev *hdev);
397
398 void hci_discovery_set_state(struct hci_dev *hdev, int state);
399
400 static inline int inquiry_cache_empty(struct hci_dev *hdev)
401 {
402 return list_empty(&hdev->discovery.all);
403 }
404
405 static inline long inquiry_cache_age(struct hci_dev *hdev)
406 {
407 struct discovery_state *c = &hdev->discovery;
408 return jiffies - c->timestamp;
409 }
410
411 static inline long inquiry_entry_age(struct inquiry_entry *e)
412 {
413 return jiffies - e->timestamp;
414 }
415
416 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
417 bdaddr_t *bdaddr);
418 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
419 bdaddr_t *bdaddr);
420 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
421 bdaddr_t *bdaddr,
422 int state);
423 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
424 struct inquiry_entry *ie);
425 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
426 bool name_known, bool *ssp);
427
428 /* ----- HCI Connections ----- */
429 enum {
430 HCI_CONN_AUTH_PEND,
431 HCI_CONN_REAUTH_PEND,
432 HCI_CONN_ENCRYPT_PEND,
433 HCI_CONN_RSWITCH_PEND,
434 HCI_CONN_MODE_CHANGE_PEND,
435 HCI_CONN_SCO_SETUP_PEND,
436 HCI_CONN_LE_SMP_PEND,
437 HCI_CONN_MGMT_CONNECTED,
438 HCI_CONN_SSP_ENABLED,
439 HCI_CONN_POWER_SAVE,
440 HCI_CONN_REMOTE_OOB,
441 };
442
443 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
444 {
445 struct hci_dev *hdev = conn->hdev;
446 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
447 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
448 }
449
450 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
451 {
452 struct hci_conn_hash *h = &hdev->conn_hash;
453 list_add_rcu(&c->list, &h->list);
454 switch (c->type) {
455 case ACL_LINK:
456 h->acl_num++;
457 break;
458 case AMP_LINK:
459 h->amp_num++;
460 break;
461 case LE_LINK:
462 h->le_num++;
463 break;
464 case SCO_LINK:
465 case ESCO_LINK:
466 h->sco_num++;
467 break;
468 }
469 }
470
471 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
472 {
473 struct hci_conn_hash *h = &hdev->conn_hash;
474
475 list_del_rcu(&c->list);
476 synchronize_rcu();
477
478 switch (c->type) {
479 case ACL_LINK:
480 h->acl_num--;
481 break;
482 case AMP_LINK:
483 h->amp_num--;
484 break;
485 case LE_LINK:
486 h->le_num--;
487 break;
488 case SCO_LINK:
489 case ESCO_LINK:
490 h->sco_num--;
491 break;
492 }
493 }
494
495 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
496 {
497 struct hci_conn_hash *h = &hdev->conn_hash;
498 switch (type) {
499 case ACL_LINK:
500 return h->acl_num;
501 case AMP_LINK:
502 return h->amp_num;
503 case LE_LINK:
504 return h->le_num;
505 case SCO_LINK:
506 case ESCO_LINK:
507 return h->sco_num;
508 default:
509 return 0;
510 }
511 }
512
513 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
514 __u16 handle)
515 {
516 struct hci_conn_hash *h = &hdev->conn_hash;
517 struct hci_conn *c;
518
519 rcu_read_lock();
520
521 list_for_each_entry_rcu(c, &h->list, list) {
522 if (c->handle == handle) {
523 rcu_read_unlock();
524 return c;
525 }
526 }
527 rcu_read_unlock();
528
529 return NULL;
530 }
531
532 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
533 __u8 type, bdaddr_t *ba)
534 {
535 struct hci_conn_hash *h = &hdev->conn_hash;
536 struct hci_conn *c;
537
538 rcu_read_lock();
539
540 list_for_each_entry_rcu(c, &h->list, list) {
541 if (c->type == type && !bacmp(&c->dst, ba)) {
542 rcu_read_unlock();
543 return c;
544 }
545 }
546
547 rcu_read_unlock();
548
549 return NULL;
550 }
551
552 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
553 __u8 type, __u16 state)
554 {
555 struct hci_conn_hash *h = &hdev->conn_hash;
556 struct hci_conn *c;
557
558 rcu_read_lock();
559
560 list_for_each_entry_rcu(c, &h->list, list) {
561 if (c->type == type && c->state == state) {
562 rcu_read_unlock();
563 return c;
564 }
565 }
566
567 rcu_read_unlock();
568
569 return NULL;
570 }
571
572 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
573 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
574 void hci_sco_setup(struct hci_conn *conn, __u8 status);
575
576 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
577 int hci_conn_del(struct hci_conn *conn);
578 void hci_conn_hash_flush(struct hci_dev *hdev);
579 void hci_conn_check_pending(struct hci_dev *hdev);
580 void hci_conn_accept(struct hci_conn *conn, int mask);
581
582 struct hci_chan *hci_chan_create(struct hci_conn *conn);
583 void hci_chan_del(struct hci_chan *chan);
584 void hci_chan_list_flush(struct hci_conn *conn);
585 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
586
587 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
588 __u8 dst_type, __u8 sec_level, __u8 auth_type);
589 int hci_conn_check_link_mode(struct hci_conn *conn);
590 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
591 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
592 int hci_conn_change_link_key(struct hci_conn *conn);
593 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
594
595 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
596
597 void hci_conn_hold_device(struct hci_conn *conn);
598 void hci_conn_put_device(struct hci_conn *conn);
599
600 static inline void hci_conn_hold(struct hci_conn *conn)
601 {
602 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
603
604 atomic_inc(&conn->refcnt);
605 cancel_delayed_work(&conn->disc_work);
606 }
607
608 static inline void hci_conn_put(struct hci_conn *conn)
609 {
610 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
611
612 if (atomic_dec_and_test(&conn->refcnt)) {
613 unsigned long timeo;
614
615 switch (conn->type) {
616 case ACL_LINK:
617 case LE_LINK:
618 del_timer(&conn->idle_timer);
619 if (conn->state == BT_CONNECTED) {
620 timeo = conn->disc_timeout;
621 if (!conn->out)
622 timeo *= 2;
623 } else {
624 timeo = msecs_to_jiffies(10);
625 }
626 break;
627
628 case AMP_LINK:
629 timeo = conn->disc_timeout;
630 break;
631
632 default:
633 timeo = msecs_to_jiffies(10);
634 break;
635 }
636
637 cancel_delayed_work(&conn->disc_work);
638 queue_delayed_work(conn->hdev->workqueue,
639 &conn->disc_work, timeo);
640 }
641 }
642
643 /* ----- HCI Devices ----- */
644 static inline void hci_dev_put(struct hci_dev *d)
645 {
646 BT_DBG("%s orig refcnt %d", d->name,
647 atomic_read(&d->dev.kobj.kref.refcount));
648
649 put_device(&d->dev);
650 }
651
652 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
653 {
654 BT_DBG("%s orig refcnt %d", d->name,
655 atomic_read(&d->dev.kobj.kref.refcount));
656
657 get_device(&d->dev);
658 return d;
659 }
660
661 #define hci_dev_lock(d) mutex_lock(&d->lock)
662 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
663
664 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
665 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
666
667 static inline void *hci_get_drvdata(struct hci_dev *hdev)
668 {
669 return dev_get_drvdata(&hdev->dev);
670 }
671
672 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
673 {
674 dev_set_drvdata(&hdev->dev, data);
675 }
676
677 /* hci_dev_list shall be locked */
678 static inline uint8_t __hci_num_ctrl(void)
679 {
680 uint8_t count = 0;
681 struct list_head *p;
682
683 list_for_each(p, &hci_dev_list) {
684 count++;
685 }
686
687 return count;
688 }
689
690 struct hci_dev *hci_dev_get(int index);
691 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
692
693 struct hci_dev *hci_alloc_dev(void);
694 void hci_free_dev(struct hci_dev *hdev);
695 int hci_register_dev(struct hci_dev *hdev);
696 void hci_unregister_dev(struct hci_dev *hdev);
697 int hci_suspend_dev(struct hci_dev *hdev);
698 int hci_resume_dev(struct hci_dev *hdev);
699 int hci_dev_open(__u16 dev);
700 int hci_dev_close(__u16 dev);
701 int hci_dev_reset(__u16 dev);
702 int hci_dev_reset_stat(__u16 dev);
703 int hci_dev_cmd(unsigned int cmd, void __user *arg);
704 int hci_get_dev_list(void __user *arg);
705 int hci_get_dev_info(void __user *arg);
706 int hci_get_conn_list(void __user *arg);
707 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
708 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
709 int hci_inquiry(void __user *arg);
710
711 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
712 bdaddr_t *bdaddr);
713 int hci_blacklist_clear(struct hci_dev *hdev);
714 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
715 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
716
717 int hci_uuids_clear(struct hci_dev *hdev);
718
719 int hci_link_keys_clear(struct hci_dev *hdev);
720 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
721 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
722 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
723 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
724 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
725 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
726 __le16 ediv, u8 rand[8]);
727 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
728 u8 addr_type);
729 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
730 int hci_smp_ltks_clear(struct hci_dev *hdev);
731 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
732
733 int hci_remote_oob_data_clear(struct hci_dev *hdev);
734 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
735 bdaddr_t *bdaddr);
736 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
737 u8 *randomizer);
738 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
739
740 int hci_update_ad(struct hci_dev *hdev);
741
742 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
743
744 int hci_recv_frame(struct sk_buff *skb);
745 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
746 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
747
748 void hci_init_sysfs(struct hci_dev *hdev);
749 int hci_add_sysfs(struct hci_dev *hdev);
750 void hci_del_sysfs(struct hci_dev *hdev);
751 void hci_conn_init_sysfs(struct hci_conn *conn);
752 void hci_conn_add_sysfs(struct hci_conn *conn);
753 void hci_conn_del_sysfs(struct hci_conn *conn);
754
755 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
756
757 /* ----- LMP capabilities ----- */
758 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
759 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
760 #define lmp_hold_capable(dev) ((dev)->features[0] & LMP_HOLD)
761 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
762 #define lmp_park_capable(dev) ((dev)->features[1] & LMP_PARK)
763 #define lmp_inq_rssi_capable(dev) ((dev)->features[3] & LMP_RSSI_INQ)
764 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
765 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
766 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
767 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
768 #define lmp_pause_enc_capable(dev) ((dev)->features[5] & LMP_PAUSE_ENC)
769 #define lmp_ext_inq_capable(dev) ((dev)->features[6] & LMP_EXT_INQ)
770 #define lmp_le_br_capable(dev) ((dev)->features[6] & LMP_SIMUL_LE_BR)
771 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
772 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
773 #define lmp_lsto_capable(dev) ((dev)->features[7] & LMP_LSTO)
774 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[7] & LMP_INQ_TX_PWR)
775 #define lmp_ext_feat_capable(dev) ((dev)->features[7] & LMP_EXTFEATURES)
776
777 /* ----- Extended LMP capabilities ----- */
778 #define lmp_host_ssp_capable(dev) ((dev)->host_features[0] & LMP_HOST_SSP)
779 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
780 #define lmp_host_le_br_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE_BREDR)
781
782 /* ----- HCI protocols ----- */
783 #define HCI_PROTO_DEFER 0x01
784
785 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
786 __u8 type, __u8 *flags)
787 {
788 switch (type) {
789 case ACL_LINK:
790 return l2cap_connect_ind(hdev, bdaddr);
791
792 case SCO_LINK:
793 case ESCO_LINK:
794 return sco_connect_ind(hdev, bdaddr, flags);
795
796 default:
797 BT_ERR("unknown link type %d", type);
798 return -EINVAL;
799 }
800 }
801
802 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
803 {
804 switch (conn->type) {
805 case ACL_LINK:
806 case LE_LINK:
807 l2cap_connect_cfm(conn, status);
808 break;
809
810 case SCO_LINK:
811 case ESCO_LINK:
812 sco_connect_cfm(conn, status);
813 break;
814
815 default:
816 BT_ERR("unknown link type %d", conn->type);
817 break;
818 }
819
820 if (conn->connect_cfm_cb)
821 conn->connect_cfm_cb(conn, status);
822 }
823
824 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
825 {
826 if (conn->type != ACL_LINK && conn->type != LE_LINK)
827 return HCI_ERROR_REMOTE_USER_TERM;
828
829 return l2cap_disconn_ind(conn);
830 }
831
832 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
833 {
834 switch (conn->type) {
835 case ACL_LINK:
836 case LE_LINK:
837 l2cap_disconn_cfm(conn, reason);
838 break;
839
840 case SCO_LINK:
841 case ESCO_LINK:
842 sco_disconn_cfm(conn, reason);
843 break;
844
845 /* L2CAP would be handled for BREDR chan */
846 case AMP_LINK:
847 break;
848
849 default:
850 BT_ERR("unknown link type %d", conn->type);
851 break;
852 }
853
854 if (conn->disconn_cfm_cb)
855 conn->disconn_cfm_cb(conn, reason);
856 }
857
858 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
859 {
860 __u8 encrypt;
861
862 if (conn->type != ACL_LINK && conn->type != LE_LINK)
863 return;
864
865 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
866 return;
867
868 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
869 l2cap_security_cfm(conn, status, encrypt);
870
871 if (conn->security_cfm_cb)
872 conn->security_cfm_cb(conn, status);
873 }
874
875 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
876 __u8 encrypt)
877 {
878 if (conn->type != ACL_LINK && conn->type != LE_LINK)
879 return;
880
881 l2cap_security_cfm(conn, status, encrypt);
882
883 if (conn->security_cfm_cb)
884 conn->security_cfm_cb(conn, status);
885 }
886
887 /* ----- HCI callbacks ----- */
888 struct hci_cb {
889 struct list_head list;
890
891 char *name;
892
893 void (*security_cfm) (struct hci_conn *conn, __u8 status,
894 __u8 encrypt);
895 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
896 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
897 };
898
899 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
900 {
901 struct hci_cb *cb;
902 __u8 encrypt;
903
904 hci_proto_auth_cfm(conn, status);
905
906 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
907 return;
908
909 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
910
911 read_lock(&hci_cb_list_lock);
912 list_for_each_entry(cb, &hci_cb_list, list) {
913 if (cb->security_cfm)
914 cb->security_cfm(conn, status, encrypt);
915 }
916 read_unlock(&hci_cb_list_lock);
917 }
918
919 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
920 __u8 encrypt)
921 {
922 struct hci_cb *cb;
923
924 if (conn->sec_level == BT_SECURITY_SDP)
925 conn->sec_level = BT_SECURITY_LOW;
926
927 if (conn->pending_sec_level > conn->sec_level)
928 conn->sec_level = conn->pending_sec_level;
929
930 hci_proto_encrypt_cfm(conn, status, encrypt);
931
932 read_lock(&hci_cb_list_lock);
933 list_for_each_entry(cb, &hci_cb_list, list) {
934 if (cb->security_cfm)
935 cb->security_cfm(conn, status, encrypt);
936 }
937 read_unlock(&hci_cb_list_lock);
938 }
939
940 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
941 {
942 struct hci_cb *cb;
943
944 read_lock(&hci_cb_list_lock);
945 list_for_each_entry(cb, &hci_cb_list, list) {
946 if (cb->key_change_cfm)
947 cb->key_change_cfm(conn, status);
948 }
949 read_unlock(&hci_cb_list_lock);
950 }
951
952 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
953 __u8 role)
954 {
955 struct hci_cb *cb;
956
957 read_lock(&hci_cb_list_lock);
958 list_for_each_entry(cb, &hci_cb_list, list) {
959 if (cb->role_switch_cfm)
960 cb->role_switch_cfm(conn, status, role);
961 }
962 read_unlock(&hci_cb_list_lock);
963 }
964
965 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
966 {
967 size_t parsed = 0;
968
969 if (data_len < 2)
970 return false;
971
972 while (parsed < data_len - 1) {
973 u8 field_len = data[0];
974
975 if (field_len == 0)
976 break;
977
978 parsed += field_len + 1;
979
980 if (parsed > data_len)
981 break;
982
983 if (data[1] == type)
984 return true;
985
986 data += field_len + 1;
987 }
988
989 return false;
990 }
991
992 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
993 {
994 size_t parsed = 0;
995
996 while (parsed < eir_len) {
997 u8 field_len = eir[0];
998
999 if (field_len == 0)
1000 return parsed;
1001
1002 parsed += field_len + 1;
1003 eir += field_len + 1;
1004 }
1005
1006 return eir_len;
1007 }
1008
1009 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1010 u8 data_len)
1011 {
1012 eir[eir_len++] = sizeof(type) + data_len;
1013 eir[eir_len++] = type;
1014 memcpy(&eir[eir_len], data, data_len);
1015 eir_len += data_len;
1016
1017 return eir_len;
1018 }
1019
1020 int hci_register_cb(struct hci_cb *hcb);
1021 int hci_unregister_cb(struct hci_cb *hcb);
1022
1023 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
1024 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1025 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1026
1027 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1028
1029 /* ----- HCI Sockets ----- */
1030 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1031 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1032 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1033
1034 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1035
1036 /* Management interface */
1037 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1038 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1039 BIT(BDADDR_LE_RANDOM))
1040 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1041 BIT(BDADDR_LE_PUBLIC) | \
1042 BIT(BDADDR_LE_RANDOM))
1043
1044 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1045 int mgmt_index_added(struct hci_dev *hdev);
1046 int mgmt_index_removed(struct hci_dev *hdev);
1047 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1048 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1049 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1050 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1051 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1052 bool persistent);
1053 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1054 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1055 u8 *dev_class);
1056 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1057 u8 link_type, u8 addr_type, u8 reason);
1058 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1059 u8 link_type, u8 addr_type, u8 status);
1060 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1061 u8 addr_type, u8 status);
1062 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1063 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1064 u8 status);
1065 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1066 u8 status);
1067 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1068 u8 link_type, u8 addr_type, __le32 value,
1069 u8 confirm_hint);
1070 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1071 u8 link_type, u8 addr_type, u8 status);
1072 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1073 u8 link_type, u8 addr_type, u8 status);
1074 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1075 u8 link_type, u8 addr_type);
1076 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1077 u8 link_type, u8 addr_type, u8 status);
1078 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1079 u8 link_type, u8 addr_type, u8 status);
1080 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1081 u8 link_type, u8 addr_type, u32 passkey,
1082 u8 entered);
1083 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1084 u8 addr_type, u8 status);
1085 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1086 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1087 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1088 u8 status);
1089 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1090 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1091 u8 *randomizer, u8 status);
1092 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1093 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1094 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1095 u8 ssp, u8 *eir, u16 eir_len);
1096 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1097 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1098 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1099 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1100 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1101 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1102 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1103 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1104 bool mgmt_valid_hdev(struct hci_dev *hdev);
1105 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1106
1107 /* HCI info for socket */
1108 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1109
1110 struct hci_pinfo {
1111 struct bt_sock bt;
1112 struct hci_dev *hdev;
1113 struct hci_filter filter;
1114 __u32 cmsg_mask;
1115 unsigned short channel;
1116 };
1117
1118 /* HCI security filter */
1119 #define HCI_SFLT_MAX_OGF 5
1120
1121 struct hci_sec_filter {
1122 __u32 type_mask;
1123 __u32 event_mask[2];
1124 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1125 };
1126
1127 /* ----- HCI requests ----- */
1128 #define HCI_REQ_DONE 0
1129 #define HCI_REQ_PEND 1
1130 #define HCI_REQ_CANCELED 2
1131
1132 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1133 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1134
1135 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1136
1137 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1138 u16 latency, u16 to_multiplier);
1139 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1140 __u8 ltk[16]);
1141 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1142 int hci_cancel_inquiry(struct hci_dev *hdev);
1143 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1144 int timeout);
1145 int hci_cancel_le_scan(struct hci_dev *hdev);
1146
1147 u8 bdaddr_to_le(u8 bdaddr_type);
1148
1149 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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