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Bluetooth: Add a new workqueue for hci_request operations
[GitHub/mt8127/android_kernel_alcatel_ttab.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 struct workqueue_struct *req_workqueue;
220
221 struct work_struct power_on;
222 struct delayed_work power_off;
223
224 __u16 discov_timeout;
225 struct delayed_work discov_off;
226
227 struct delayed_work service_cache;
228
229 struct timer_list cmd_timer;
230
231 struct work_struct rx_work;
232 struct work_struct cmd_work;
233 struct work_struct tx_work;
234
235 struct sk_buff_head rx_q;
236 struct sk_buff_head raw_q;
237 struct sk_buff_head cmd_q;
238
239 struct sk_buff *sent_cmd;
240 struct sk_buff *reassembly[NUM_REASSEMBLY];
241
242 struct mutex req_lock;
243 wait_queue_head_t req_wait_q;
244 __u32 req_status;
245 __u32 req_result;
246
247 __u16 init_last_cmd;
248
249 struct list_head mgmt_pending;
250
251 struct discovery_state discovery;
252 struct hci_conn_hash conn_hash;
253 struct list_head blacklist;
254
255 struct list_head uuids;
256
257 struct list_head link_keys;
258
259 struct list_head long_term_keys;
260
261 struct list_head remote_oob_data;
262
263 struct hci_dev_stats stat;
264
265 struct sk_buff_head driver_init;
266
267 atomic_t promisc;
268
269 struct dentry *debugfs;
270
271 struct device dev;
272
273 struct rfkill *rfkill;
274
275 unsigned long dev_flags;
276
277 struct delayed_work le_scan_disable;
278
279 struct work_struct le_scan;
280 struct le_scan_params le_scan_params;
281
282 __s8 adv_tx_power;
283 __u8 adv_data[HCI_MAX_AD_LENGTH];
284 __u8 adv_data_len;
285
286 int (*open)(struct hci_dev *hdev);
287 int (*close)(struct hci_dev *hdev);
288 int (*flush)(struct hci_dev *hdev);
289 int (*send)(struct sk_buff *skb);
290 void (*notify)(struct hci_dev *hdev, unsigned int evt);
291 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
292 };
293
294 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
295
296 struct hci_conn {
297 struct list_head list;
298
299 atomic_t refcnt;
300
301 bdaddr_t dst;
302 __u8 dst_type;
303 __u16 handle;
304 __u16 state;
305 __u8 mode;
306 __u8 type;
307 bool out;
308 __u8 attempt;
309 __u8 dev_class[3];
310 __u8 features[8];
311 __u16 interval;
312 __u16 pkt_type;
313 __u16 link_policy;
314 __u32 link_mode;
315 __u8 key_type;
316 __u8 auth_type;
317 __u8 sec_level;
318 __u8 pending_sec_level;
319 __u8 pin_length;
320 __u8 enc_key_size;
321 __u8 io_capability;
322 __u32 passkey_notify;
323 __u8 passkey_entered;
324 __u16 disc_timeout;
325 unsigned long flags;
326
327 __u8 remote_cap;
328 __u8 remote_auth;
329 __u8 remote_id;
330 bool flush_key;
331
332 unsigned int sent;
333
334 struct sk_buff_head data_q;
335 struct list_head chan_list;
336
337 struct delayed_work disc_work;
338 struct timer_list idle_timer;
339 struct timer_list auto_accept_timer;
340
341 struct device dev;
342 atomic_t devref;
343
344 struct hci_dev *hdev;
345 void *l2cap_data;
346 void *sco_data;
347 void *smp_conn;
348 struct amp_mgr *amp_mgr;
349
350 struct hci_conn *link;
351
352 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
353 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
354 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
355 };
356
357 struct hci_chan {
358 struct list_head list;
359 __u16 handle;
360 struct hci_conn *conn;
361 struct sk_buff_head data_q;
362 unsigned int sent;
363 __u8 state;
364 };
365
366 extern struct list_head hci_dev_list;
367 extern struct list_head hci_cb_list;
368 extern rwlock_t hci_dev_list_lock;
369 extern rwlock_t hci_cb_list_lock;
370
371 /* ----- HCI interface to upper protocols ----- */
372 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
373 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
374 extern int l2cap_disconn_ind(struct hci_conn *hcon);
375 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
376 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
377 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
378 u16 flags);
379
380 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
381 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
382 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
383 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
384
385 /* ----- Inquiry cache ----- */
386 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
387 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
388
389 static inline void discovery_init(struct hci_dev *hdev)
390 {
391 hdev->discovery.state = DISCOVERY_STOPPED;
392 INIT_LIST_HEAD(&hdev->discovery.all);
393 INIT_LIST_HEAD(&hdev->discovery.unknown);
394 INIT_LIST_HEAD(&hdev->discovery.resolve);
395 }
396
397 bool hci_discovery_active(struct hci_dev *hdev);
398
399 void hci_discovery_set_state(struct hci_dev *hdev, int state);
400
401 static inline int inquiry_cache_empty(struct hci_dev *hdev)
402 {
403 return list_empty(&hdev->discovery.all);
404 }
405
406 static inline long inquiry_cache_age(struct hci_dev *hdev)
407 {
408 struct discovery_state *c = &hdev->discovery;
409 return jiffies - c->timestamp;
410 }
411
412 static inline long inquiry_entry_age(struct inquiry_entry *e)
413 {
414 return jiffies - e->timestamp;
415 }
416
417 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
418 bdaddr_t *bdaddr);
419 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
420 bdaddr_t *bdaddr);
421 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
422 bdaddr_t *bdaddr,
423 int state);
424 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
425 struct inquiry_entry *ie);
426 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
427 bool name_known, bool *ssp);
428
429 /* ----- HCI Connections ----- */
430 enum {
431 HCI_CONN_AUTH_PEND,
432 HCI_CONN_REAUTH_PEND,
433 HCI_CONN_ENCRYPT_PEND,
434 HCI_CONN_RSWITCH_PEND,
435 HCI_CONN_MODE_CHANGE_PEND,
436 HCI_CONN_SCO_SETUP_PEND,
437 HCI_CONN_LE_SMP_PEND,
438 HCI_CONN_MGMT_CONNECTED,
439 HCI_CONN_SSP_ENABLED,
440 HCI_CONN_POWER_SAVE,
441 HCI_CONN_REMOTE_OOB,
442 };
443
444 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
445 {
446 struct hci_dev *hdev = conn->hdev;
447 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
448 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
449 }
450
451 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
452 {
453 struct hci_conn_hash *h = &hdev->conn_hash;
454 list_add_rcu(&c->list, &h->list);
455 switch (c->type) {
456 case ACL_LINK:
457 h->acl_num++;
458 break;
459 case AMP_LINK:
460 h->amp_num++;
461 break;
462 case LE_LINK:
463 h->le_num++;
464 break;
465 case SCO_LINK:
466 case ESCO_LINK:
467 h->sco_num++;
468 break;
469 }
470 }
471
472 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
473 {
474 struct hci_conn_hash *h = &hdev->conn_hash;
475
476 list_del_rcu(&c->list);
477 synchronize_rcu();
478
479 switch (c->type) {
480 case ACL_LINK:
481 h->acl_num--;
482 break;
483 case AMP_LINK:
484 h->amp_num--;
485 break;
486 case LE_LINK:
487 h->le_num--;
488 break;
489 case SCO_LINK:
490 case ESCO_LINK:
491 h->sco_num--;
492 break;
493 }
494 }
495
496 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
497 {
498 struct hci_conn_hash *h = &hdev->conn_hash;
499 switch (type) {
500 case ACL_LINK:
501 return h->acl_num;
502 case AMP_LINK:
503 return h->amp_num;
504 case LE_LINK:
505 return h->le_num;
506 case SCO_LINK:
507 case ESCO_LINK:
508 return h->sco_num;
509 default:
510 return 0;
511 }
512 }
513
514 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
515 __u16 handle)
516 {
517 struct hci_conn_hash *h = &hdev->conn_hash;
518 struct hci_conn *c;
519
520 rcu_read_lock();
521
522 list_for_each_entry_rcu(c, &h->list, list) {
523 if (c->handle == handle) {
524 rcu_read_unlock();
525 return c;
526 }
527 }
528 rcu_read_unlock();
529
530 return NULL;
531 }
532
533 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
534 __u8 type, bdaddr_t *ba)
535 {
536 struct hci_conn_hash *h = &hdev->conn_hash;
537 struct hci_conn *c;
538
539 rcu_read_lock();
540
541 list_for_each_entry_rcu(c, &h->list, list) {
542 if (c->type == type && !bacmp(&c->dst, ba)) {
543 rcu_read_unlock();
544 return c;
545 }
546 }
547
548 rcu_read_unlock();
549
550 return NULL;
551 }
552
553 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
554 __u8 type, __u16 state)
555 {
556 struct hci_conn_hash *h = &hdev->conn_hash;
557 struct hci_conn *c;
558
559 rcu_read_lock();
560
561 list_for_each_entry_rcu(c, &h->list, list) {
562 if (c->type == type && c->state == state) {
563 rcu_read_unlock();
564 return c;
565 }
566 }
567
568 rcu_read_unlock();
569
570 return NULL;
571 }
572
573 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
574 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
575 void hci_sco_setup(struct hci_conn *conn, __u8 status);
576
577 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
578 int hci_conn_del(struct hci_conn *conn);
579 void hci_conn_hash_flush(struct hci_dev *hdev);
580 void hci_conn_check_pending(struct hci_dev *hdev);
581 void hci_conn_accept(struct hci_conn *conn, int mask);
582
583 struct hci_chan *hci_chan_create(struct hci_conn *conn);
584 void hci_chan_del(struct hci_chan *chan);
585 void hci_chan_list_flush(struct hci_conn *conn);
586 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
587
588 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
589 __u8 dst_type, __u8 sec_level, __u8 auth_type);
590 int hci_conn_check_link_mode(struct hci_conn *conn);
591 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
592 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
593 int hci_conn_change_link_key(struct hci_conn *conn);
594 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
595
596 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
597
598 void hci_conn_hold_device(struct hci_conn *conn);
599 void hci_conn_put_device(struct hci_conn *conn);
600
601 static inline void hci_conn_hold(struct hci_conn *conn)
602 {
603 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
604
605 atomic_inc(&conn->refcnt);
606 cancel_delayed_work(&conn->disc_work);
607 }
608
609 static inline void hci_conn_put(struct hci_conn *conn)
610 {
611 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
612
613 if (atomic_dec_and_test(&conn->refcnt)) {
614 unsigned long timeo;
615
616 switch (conn->type) {
617 case ACL_LINK:
618 case LE_LINK:
619 del_timer(&conn->idle_timer);
620 if (conn->state == BT_CONNECTED) {
621 timeo = conn->disc_timeout;
622 if (!conn->out)
623 timeo *= 2;
624 } else {
625 timeo = msecs_to_jiffies(10);
626 }
627 break;
628
629 case AMP_LINK:
630 timeo = conn->disc_timeout;
631 break;
632
633 default:
634 timeo = msecs_to_jiffies(10);
635 break;
636 }
637
638 cancel_delayed_work(&conn->disc_work);
639 queue_delayed_work(conn->hdev->workqueue,
640 &conn->disc_work, timeo);
641 }
642 }
643
644 /* ----- HCI Devices ----- */
645 static inline void hci_dev_put(struct hci_dev *d)
646 {
647 BT_DBG("%s orig refcnt %d", d->name,
648 atomic_read(&d->dev.kobj.kref.refcount));
649
650 put_device(&d->dev);
651 }
652
653 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
654 {
655 BT_DBG("%s orig refcnt %d", d->name,
656 atomic_read(&d->dev.kobj.kref.refcount));
657
658 get_device(&d->dev);
659 return d;
660 }
661
662 #define hci_dev_lock(d) mutex_lock(&d->lock)
663 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
664
665 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
666 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
667
668 static inline void *hci_get_drvdata(struct hci_dev *hdev)
669 {
670 return dev_get_drvdata(&hdev->dev);
671 }
672
673 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
674 {
675 dev_set_drvdata(&hdev->dev, data);
676 }
677
678 /* hci_dev_list shall be locked */
679 static inline uint8_t __hci_num_ctrl(void)
680 {
681 uint8_t count = 0;
682 struct list_head *p;
683
684 list_for_each(p, &hci_dev_list) {
685 count++;
686 }
687
688 return count;
689 }
690
691 struct hci_dev *hci_dev_get(int index);
692 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
693
694 struct hci_dev *hci_alloc_dev(void);
695 void hci_free_dev(struct hci_dev *hdev);
696 int hci_register_dev(struct hci_dev *hdev);
697 void hci_unregister_dev(struct hci_dev *hdev);
698 int hci_suspend_dev(struct hci_dev *hdev);
699 int hci_resume_dev(struct hci_dev *hdev);
700 int hci_dev_open(__u16 dev);
701 int hci_dev_close(__u16 dev);
702 int hci_dev_reset(__u16 dev);
703 int hci_dev_reset_stat(__u16 dev);
704 int hci_dev_cmd(unsigned int cmd, void __user *arg);
705 int hci_get_dev_list(void __user *arg);
706 int hci_get_dev_info(void __user *arg);
707 int hci_get_conn_list(void __user *arg);
708 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
709 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
710 int hci_inquiry(void __user *arg);
711
712 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
713 bdaddr_t *bdaddr);
714 int hci_blacklist_clear(struct hci_dev *hdev);
715 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
716 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
717
718 int hci_uuids_clear(struct hci_dev *hdev);
719
720 int hci_link_keys_clear(struct hci_dev *hdev);
721 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
722 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
723 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
724 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
725 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
726 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
727 __le16 ediv, u8 rand[8]);
728 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
729 u8 addr_type);
730 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
731 int hci_smp_ltks_clear(struct hci_dev *hdev);
732 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
733
734 int hci_remote_oob_data_clear(struct hci_dev *hdev);
735 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
736 bdaddr_t *bdaddr);
737 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
738 u8 *randomizer);
739 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
740
741 int hci_update_ad(struct hci_dev *hdev);
742
743 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
744
745 int hci_recv_frame(struct sk_buff *skb);
746 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
747 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
748
749 void hci_init_sysfs(struct hci_dev *hdev);
750 int hci_add_sysfs(struct hci_dev *hdev);
751 void hci_del_sysfs(struct hci_dev *hdev);
752 void hci_conn_init_sysfs(struct hci_conn *conn);
753 void hci_conn_add_sysfs(struct hci_conn *conn);
754 void hci_conn_del_sysfs(struct hci_conn *conn);
755
756 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
757
758 /* ----- LMP capabilities ----- */
759 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
760 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
761 #define lmp_hold_capable(dev) ((dev)->features[0] & LMP_HOLD)
762 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
763 #define lmp_park_capable(dev) ((dev)->features[1] & LMP_PARK)
764 #define lmp_inq_rssi_capable(dev) ((dev)->features[3] & LMP_RSSI_INQ)
765 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
766 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR))
767 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
768 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
769 #define lmp_pause_enc_capable(dev) ((dev)->features[5] & LMP_PAUSE_ENC)
770 #define lmp_ext_inq_capable(dev) ((dev)->features[6] & LMP_EXT_INQ)
771 #define lmp_le_br_capable(dev) !!((dev)->features[6] & LMP_SIMUL_LE_BR)
772 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
773 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
774 #define lmp_lsto_capable(dev) ((dev)->features[7] & LMP_LSTO)
775 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[7] & LMP_INQ_TX_PWR)
776 #define lmp_ext_feat_capable(dev) ((dev)->features[7] & LMP_EXTFEATURES)
777
778 /* ----- Extended LMP capabilities ----- */
779 #define lmp_host_ssp_capable(dev) ((dev)->host_features[0] & LMP_HOST_SSP)
780 #define lmp_host_le_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE)
781 #define lmp_host_le_br_capable(dev) !!((dev)->host_features[0] & LMP_HOST_LE_BREDR)
782
783 /* returns true if at least one AMP active */
784 static inline bool hci_amp_capable(void)
785 {
786 struct hci_dev *hdev;
787 bool ret = false;
788
789 read_lock(&hci_dev_list_lock);
790 list_for_each_entry(hdev, &hci_dev_list, list)
791 if (hdev->amp_type == HCI_AMP &&
792 test_bit(HCI_UP, &hdev->flags))
793 ret = true;
794 read_unlock(&hci_dev_list_lock);
795
796 return ret;
797 }
798
799 /* ----- HCI protocols ----- */
800 #define HCI_PROTO_DEFER 0x01
801
802 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
803 __u8 type, __u8 *flags)
804 {
805 switch (type) {
806 case ACL_LINK:
807 return l2cap_connect_ind(hdev, bdaddr);
808
809 case SCO_LINK:
810 case ESCO_LINK:
811 return sco_connect_ind(hdev, bdaddr, flags);
812
813 default:
814 BT_ERR("unknown link type %d", type);
815 return -EINVAL;
816 }
817 }
818
819 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
820 {
821 switch (conn->type) {
822 case ACL_LINK:
823 case LE_LINK:
824 l2cap_connect_cfm(conn, status);
825 break;
826
827 case SCO_LINK:
828 case ESCO_LINK:
829 sco_connect_cfm(conn, status);
830 break;
831
832 default:
833 BT_ERR("unknown link type %d", conn->type);
834 break;
835 }
836
837 if (conn->connect_cfm_cb)
838 conn->connect_cfm_cb(conn, status);
839 }
840
841 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
842 {
843 if (conn->type != ACL_LINK && conn->type != LE_LINK)
844 return HCI_ERROR_REMOTE_USER_TERM;
845
846 return l2cap_disconn_ind(conn);
847 }
848
849 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
850 {
851 switch (conn->type) {
852 case ACL_LINK:
853 case LE_LINK:
854 l2cap_disconn_cfm(conn, reason);
855 break;
856
857 case SCO_LINK:
858 case ESCO_LINK:
859 sco_disconn_cfm(conn, reason);
860 break;
861
862 /* L2CAP would be handled for BREDR chan */
863 case AMP_LINK:
864 break;
865
866 default:
867 BT_ERR("unknown link type %d", conn->type);
868 break;
869 }
870
871 if (conn->disconn_cfm_cb)
872 conn->disconn_cfm_cb(conn, reason);
873 }
874
875 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
876 {
877 __u8 encrypt;
878
879 if (conn->type != ACL_LINK && conn->type != LE_LINK)
880 return;
881
882 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
883 return;
884
885 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
886 l2cap_security_cfm(conn, status, encrypt);
887
888 if (conn->security_cfm_cb)
889 conn->security_cfm_cb(conn, status);
890 }
891
892 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
893 __u8 encrypt)
894 {
895 if (conn->type != ACL_LINK && conn->type != LE_LINK)
896 return;
897
898 l2cap_security_cfm(conn, status, encrypt);
899
900 if (conn->security_cfm_cb)
901 conn->security_cfm_cb(conn, status);
902 }
903
904 /* ----- HCI callbacks ----- */
905 struct hci_cb {
906 struct list_head list;
907
908 char *name;
909
910 void (*security_cfm) (struct hci_conn *conn, __u8 status,
911 __u8 encrypt);
912 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
913 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
914 };
915
916 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
917 {
918 struct hci_cb *cb;
919 __u8 encrypt;
920
921 hci_proto_auth_cfm(conn, status);
922
923 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
924 return;
925
926 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
927
928 read_lock(&hci_cb_list_lock);
929 list_for_each_entry(cb, &hci_cb_list, list) {
930 if (cb->security_cfm)
931 cb->security_cfm(conn, status, encrypt);
932 }
933 read_unlock(&hci_cb_list_lock);
934 }
935
936 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
937 __u8 encrypt)
938 {
939 struct hci_cb *cb;
940
941 if (conn->sec_level == BT_SECURITY_SDP)
942 conn->sec_level = BT_SECURITY_LOW;
943
944 if (conn->pending_sec_level > conn->sec_level)
945 conn->sec_level = conn->pending_sec_level;
946
947 hci_proto_encrypt_cfm(conn, status, encrypt);
948
949 read_lock(&hci_cb_list_lock);
950 list_for_each_entry(cb, &hci_cb_list, list) {
951 if (cb->security_cfm)
952 cb->security_cfm(conn, status, encrypt);
953 }
954 read_unlock(&hci_cb_list_lock);
955 }
956
957 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
958 {
959 struct hci_cb *cb;
960
961 read_lock(&hci_cb_list_lock);
962 list_for_each_entry(cb, &hci_cb_list, list) {
963 if (cb->key_change_cfm)
964 cb->key_change_cfm(conn, status);
965 }
966 read_unlock(&hci_cb_list_lock);
967 }
968
969 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
970 __u8 role)
971 {
972 struct hci_cb *cb;
973
974 read_lock(&hci_cb_list_lock);
975 list_for_each_entry(cb, &hci_cb_list, list) {
976 if (cb->role_switch_cfm)
977 cb->role_switch_cfm(conn, status, role);
978 }
979 read_unlock(&hci_cb_list_lock);
980 }
981
982 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
983 {
984 size_t parsed = 0;
985
986 if (data_len < 2)
987 return false;
988
989 while (parsed < data_len - 1) {
990 u8 field_len = data[0];
991
992 if (field_len == 0)
993 break;
994
995 parsed += field_len + 1;
996
997 if (parsed > data_len)
998 break;
999
1000 if (data[1] == type)
1001 return true;
1002
1003 data += field_len + 1;
1004 }
1005
1006 return false;
1007 }
1008
1009 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1010 {
1011 size_t parsed = 0;
1012
1013 while (parsed < eir_len) {
1014 u8 field_len = eir[0];
1015
1016 if (field_len == 0)
1017 return parsed;
1018
1019 parsed += field_len + 1;
1020 eir += field_len + 1;
1021 }
1022
1023 return eir_len;
1024 }
1025
1026 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1027 u8 data_len)
1028 {
1029 eir[eir_len++] = sizeof(type) + data_len;
1030 eir[eir_len++] = type;
1031 memcpy(&eir[eir_len], data, data_len);
1032 eir_len += data_len;
1033
1034 return eir_len;
1035 }
1036
1037 int hci_register_cb(struct hci_cb *hcb);
1038 int hci_unregister_cb(struct hci_cb *hcb);
1039
1040 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
1041 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1042 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1043
1044 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1045
1046 /* ----- HCI Sockets ----- */
1047 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1048 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1049 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1050
1051 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1052
1053 /* Management interface */
1054 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1055 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1056 BIT(BDADDR_LE_RANDOM))
1057 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1058 BIT(BDADDR_LE_PUBLIC) | \
1059 BIT(BDADDR_LE_RANDOM))
1060
1061 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1062 int mgmt_index_added(struct hci_dev *hdev);
1063 int mgmt_index_removed(struct hci_dev *hdev);
1064 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1065 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1066 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1067 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1068 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1069 bool persistent);
1070 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1071 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1072 u8 *dev_class);
1073 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1074 u8 link_type, u8 addr_type, u8 reason);
1075 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1076 u8 link_type, u8 addr_type, u8 status);
1077 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1078 u8 addr_type, u8 status);
1079 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1080 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1081 u8 status);
1082 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1083 u8 status);
1084 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1085 u8 link_type, u8 addr_type, __le32 value,
1086 u8 confirm_hint);
1087 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1088 u8 link_type, u8 addr_type, u8 status);
1089 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1090 u8 link_type, u8 addr_type, u8 status);
1091 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1092 u8 link_type, u8 addr_type);
1093 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 link_type, u8 addr_type, u8 status);
1095 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096 u8 link_type, u8 addr_type, u8 status);
1097 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1098 u8 link_type, u8 addr_type, u32 passkey,
1099 u8 entered);
1100 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1101 u8 addr_type, u8 status);
1102 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1103 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1104 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1105 u8 status);
1106 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1107 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1108 u8 *randomizer, u8 status);
1109 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1110 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1111 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1112 u8 ssp, u8 *eir, u16 eir_len);
1113 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1114 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1115 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1116 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1117 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1118 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1119 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1120 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1121 bool mgmt_valid_hdev(struct hci_dev *hdev);
1122 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1123
1124 /* HCI info for socket */
1125 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1126
1127 struct hci_pinfo {
1128 struct bt_sock bt;
1129 struct hci_dev *hdev;
1130 struct hci_filter filter;
1131 __u32 cmsg_mask;
1132 unsigned short channel;
1133 };
1134
1135 /* HCI security filter */
1136 #define HCI_SFLT_MAX_OGF 5
1137
1138 struct hci_sec_filter {
1139 __u32 type_mask;
1140 __u32 event_mask[2];
1141 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1142 };
1143
1144 /* ----- HCI requests ----- */
1145 #define HCI_REQ_DONE 0
1146 #define HCI_REQ_PEND 1
1147 #define HCI_REQ_CANCELED 2
1148
1149 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1150 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1151
1152 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1153
1154 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1155 u16 latency, u16 to_multiplier);
1156 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1157 __u8 ltk[16]);
1158 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1159 int hci_cancel_inquiry(struct hci_dev *hdev);
1160 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1161 int timeout);
1162 int hci_cancel_le_scan(struct hci_dev *hdev);
1163
1164 u8 bdaddr_to_le(u8 bdaddr_type);
1165
1166 #endif /* __HCI_CORE_H */
kernel source for telekom puls (alcatel/mediatek)