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[deliverable/linux.git] / include / net / bluetooth / hci_core.h
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 #ifndef __HCI_CORE_H
26 #define __HCI_CORE_H
27
28 #include <linux/interrupt.h>
29 #include <net/bluetooth/hci.h>
30
31 /* HCI priority */
32 #define HCI_PRIO_MAX 7
33
34 /* HCI Core structures */
35 struct inquiry_data {
36 bdaddr_t bdaddr;
37 __u8 pscan_rep_mode;
38 __u8 pscan_period_mode;
39 __u8 pscan_mode;
40 __u8 dev_class[3];
41 __le16 clock_offset;
42 __s8 rssi;
43 __u8 ssp_mode;
44 };
45
46 struct inquiry_entry {
47 struct list_head all; /* inq_cache.all */
48 struct list_head list; /* unknown or resolve */
49 enum {
50 NAME_NOT_KNOWN,
51 NAME_NEEDED,
52 NAME_PENDING,
53 NAME_KNOWN,
54 } name_state;
55 __u32 timestamp;
56 struct inquiry_data data;
57 };
58
59 struct discovery_state {
60 enum {
61 DISCOVERY_STOPPED,
62 DISCOVERY_STARTING,
63 DISCOVERY_INQUIRY,
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 sco_num;
77 unsigned int le_num;
78 };
79
80 struct bdaddr_list {
81 struct list_head list;
82 bdaddr_t bdaddr;
83 };
84
85 struct bt_uuid {
86 struct list_head list;
87 u8 uuid[16];
88 u8 svc_hint;
89 };
90
91 struct key_master_id {
92 __le16 ediv;
93 u8 rand[8];
94 } __packed;
95
96 struct link_key_data {
97 bdaddr_t bdaddr;
98 u8 type;
99 u8 val[16];
100 u8 pin_len;
101 u8 dlen;
102 u8 data[0];
103 } __packed;
104
105 struct link_key {
106 struct list_head list;
107 bdaddr_t bdaddr;
108 u8 type;
109 u8 val[16];
110 u8 pin_len;
111 u8 dlen;
112 u8 data[0];
113 };
114
115 struct oob_data {
116 struct list_head list;
117 bdaddr_t bdaddr;
118 u8 hash[16];
119 u8 randomizer[16];
120 };
121
122 struct adv_entry {
123 struct list_head list;
124 bdaddr_t bdaddr;
125 u8 bdaddr_type;
126 };
127
128 #define NUM_REASSEMBLY 4
129 struct hci_dev {
130 struct list_head list;
131 struct mutex lock;
132
133 char name[8];
134 unsigned long flags;
135 __u16 id;
136 __u8 bus;
137 __u8 dev_type;
138 bdaddr_t bdaddr;
139 __u8 dev_name[HCI_MAX_NAME_LENGTH];
140 __u8 eir[HCI_MAX_EIR_LENGTH];
141 __u8 dev_class[3];
142 __u8 major_class;
143 __u8 minor_class;
144 __u8 features[8];
145 __u8 host_features[8];
146 __u8 commands[64];
147 __u8 hci_ver;
148 __u16 hci_rev;
149 __u8 lmp_ver;
150 __u16 manufacturer;
151 __le16 lmp_subver;
152 __u16 voice_setting;
153 __u8 io_capability;
154
155 __u16 pkt_type;
156 __u16 esco_type;
157 __u16 link_policy;
158 __u16 link_mode;
159
160 __u32 idle_timeout;
161 __u16 sniff_min_interval;
162 __u16 sniff_max_interval;
163
164 __u8 amp_status;
165 __u32 amp_total_bw;
166 __u32 amp_max_bw;
167 __u32 amp_min_latency;
168 __u32 amp_max_pdu;
169 __u8 amp_type;
170 __u16 amp_pal_cap;
171 __u16 amp_assoc_size;
172 __u32 amp_max_flush_to;
173 __u32 amp_be_flush_to;
174
175 __u8 flow_ctl_mode;
176
177 unsigned int auto_accept_delay;
178
179 unsigned long quirks;
180
181 atomic_t cmd_cnt;
182 unsigned int acl_cnt;
183 unsigned int sco_cnt;
184 unsigned int le_cnt;
185
186 unsigned int acl_mtu;
187 unsigned int sco_mtu;
188 unsigned int le_mtu;
189 unsigned int acl_pkts;
190 unsigned int sco_pkts;
191 unsigned int le_pkts;
192
193 __u16 block_len;
194 __u16 block_mtu;
195 __u16 num_blocks;
196 __u16 block_cnt;
197
198 unsigned long acl_last_tx;
199 unsigned long sco_last_tx;
200 unsigned long le_last_tx;
201
202 struct workqueue_struct *workqueue;
203
204 struct work_struct power_on;
205 struct delayed_work power_off;
206
207 __u16 discov_timeout;
208 struct delayed_work discov_off;
209
210 struct delayed_work service_cache;
211
212 struct timer_list cmd_timer;
213
214 struct work_struct rx_work;
215 struct work_struct cmd_work;
216 struct work_struct tx_work;
217
218 struct sk_buff_head rx_q;
219 struct sk_buff_head raw_q;
220 struct sk_buff_head cmd_q;
221
222 struct sk_buff *sent_cmd;
223 struct sk_buff *reassembly[NUM_REASSEMBLY];
224
225 struct mutex req_lock;
226 wait_queue_head_t req_wait_q;
227 __u32 req_status;
228 __u32 req_result;
229
230 __u16 init_last_cmd;
231
232 struct list_head mgmt_pending;
233
234 struct discovery_state discovery;
235 struct hci_conn_hash conn_hash;
236 struct list_head blacklist;
237
238 struct list_head uuids;
239
240 struct list_head link_keys;
241
242 struct list_head remote_oob_data;
243
244 struct list_head adv_entries;
245 struct delayed_work adv_work;
246
247 struct hci_dev_stats stat;
248
249 struct sk_buff_head driver_init;
250
251 void *driver_data;
252 void *core_data;
253
254 atomic_t promisc;
255
256 struct dentry *debugfs;
257
258 struct device *parent;
259 struct device dev;
260
261 struct rfkill *rfkill;
262
263 unsigned long dev_flags;
264
265 int (*open)(struct hci_dev *hdev);
266 int (*close)(struct hci_dev *hdev);
267 int (*flush)(struct hci_dev *hdev);
268 int (*send)(struct sk_buff *skb);
269 void (*notify)(struct hci_dev *hdev, unsigned int evt);
270 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
271 };
272
273 struct hci_conn {
274 struct list_head list;
275
276 atomic_t refcnt;
277
278 bdaddr_t dst;
279 __u8 dst_type;
280 __u16 handle;
281 __u16 state;
282 __u8 mode;
283 __u8 type;
284 bool out;
285 __u8 attempt;
286 __u8 dev_class[3];
287 __u8 features[8];
288 __u16 interval;
289 __u16 pkt_type;
290 __u16 link_policy;
291 __u32 link_mode;
292 __u8 key_type;
293 __u8 auth_type;
294 __u8 sec_level;
295 __u8 pending_sec_level;
296 __u8 pin_length;
297 __u8 enc_key_size;
298 __u8 io_capability;
299 __u16 disc_timeout;
300 unsigned long flags;
301
302 __u8 remote_cap;
303 __u8 remote_auth;
304
305 unsigned int sent;
306
307 struct sk_buff_head data_q;
308 struct list_head chan_list;
309
310 struct delayed_work disc_work;
311 struct timer_list idle_timer;
312 struct timer_list auto_accept_timer;
313
314 struct device dev;
315 atomic_t devref;
316
317 struct hci_dev *hdev;
318 void *l2cap_data;
319 void *sco_data;
320 void *smp_conn;
321
322 struct hci_conn *link;
323
324 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
325 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
326 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
327 };
328
329 struct hci_chan {
330 struct list_head list;
331
332 struct hci_conn *conn;
333 struct sk_buff_head data_q;
334 unsigned int sent;
335 };
336
337 extern struct list_head hci_dev_list;
338 extern struct list_head hci_cb_list;
339 extern rwlock_t hci_dev_list_lock;
340 extern rwlock_t hci_cb_list_lock;
341
342 /* ----- HCI interface to upper protocols ----- */
343 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
344 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
345 extern int l2cap_disconn_ind(struct hci_conn *hcon);
346 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
347 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
348 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
349
350 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
351 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
352 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
353 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
354
355 /* ----- Inquiry cache ----- */
356 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
357 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
358
359 static inline void discovery_init(struct hci_dev *hdev)
360 {
361 hdev->discovery.state = DISCOVERY_STOPPED;
362 INIT_LIST_HEAD(&hdev->discovery.all);
363 INIT_LIST_HEAD(&hdev->discovery.unknown);
364 INIT_LIST_HEAD(&hdev->discovery.resolve);
365 }
366
367 bool hci_discovery_active(struct hci_dev *hdev);
368
369 void hci_discovery_set_state(struct hci_dev *hdev, int state);
370
371 static inline int inquiry_cache_empty(struct hci_dev *hdev)
372 {
373 return list_empty(&hdev->discovery.all);
374 }
375
376 static inline long inquiry_cache_age(struct hci_dev *hdev)
377 {
378 struct discovery_state *c = &hdev->discovery;
379 return jiffies - c->timestamp;
380 }
381
382 static inline long inquiry_entry_age(struct inquiry_entry *e)
383 {
384 return jiffies - e->timestamp;
385 }
386
387 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
388 bdaddr_t *bdaddr);
389 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
390 bdaddr_t *bdaddr);
391 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
392 bdaddr_t *bdaddr,
393 int state);
394 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
395 struct inquiry_entry *ie);
396 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
397 bool name_known);
398
399 /* ----- HCI Connections ----- */
400 enum {
401 HCI_CONN_AUTH_PEND,
402 HCI_CONN_REAUTH_PEND,
403 HCI_CONN_ENCRYPT_PEND,
404 HCI_CONN_RSWITCH_PEND,
405 HCI_CONN_MODE_CHANGE_PEND,
406 HCI_CONN_SCO_SETUP_PEND,
407 HCI_CONN_LE_SMP_PEND,
408 HCI_CONN_MGMT_CONNECTED,
409 HCI_CONN_SSP_ENABLED,
410 HCI_CONN_POWER_SAVE,
411 HCI_CONN_REMOTE_OOB,
412 };
413
414 static inline void hci_conn_hash_init(struct hci_dev *hdev)
415 {
416 struct hci_conn_hash *h = &hdev->conn_hash;
417 INIT_LIST_HEAD(&h->list);
418 h->acl_num = 0;
419 h->sco_num = 0;
420 h->le_num = 0;
421 }
422
423 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
424 {
425 struct hci_conn_hash *h = &hdev->conn_hash;
426 list_add_rcu(&c->list, &h->list);
427 switch (c->type) {
428 case ACL_LINK:
429 h->acl_num++;
430 break;
431 case LE_LINK:
432 h->le_num++;
433 break;
434 case SCO_LINK:
435 case ESCO_LINK:
436 h->sco_num++;
437 break;
438 }
439 }
440
441 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
442 {
443 struct hci_conn_hash *h = &hdev->conn_hash;
444
445 list_del_rcu(&c->list);
446 synchronize_rcu();
447
448 switch (c->type) {
449 case ACL_LINK:
450 h->acl_num--;
451 break;
452 case LE_LINK:
453 h->le_num--;
454 break;
455 case SCO_LINK:
456 case ESCO_LINK:
457 h->sco_num--;
458 break;
459 }
460 }
461
462 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
463 {
464 struct hci_conn_hash *h = &hdev->conn_hash;
465 switch (type) {
466 case ACL_LINK:
467 return h->acl_num;
468 case LE_LINK:
469 return h->le_num;
470 case SCO_LINK:
471 case ESCO_LINK:
472 return h->sco_num;
473 default:
474 return 0;
475 }
476 }
477
478 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
479 __u16 handle)
480 {
481 struct hci_conn_hash *h = &hdev->conn_hash;
482 struct hci_conn *c;
483
484 rcu_read_lock();
485
486 list_for_each_entry_rcu(c, &h->list, list) {
487 if (c->handle == handle) {
488 rcu_read_unlock();
489 return c;
490 }
491 }
492 rcu_read_unlock();
493
494 return NULL;
495 }
496
497 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
498 __u8 type, bdaddr_t *ba)
499 {
500 struct hci_conn_hash *h = &hdev->conn_hash;
501 struct hci_conn *c;
502
503 rcu_read_lock();
504
505 list_for_each_entry_rcu(c, &h->list, list) {
506 if (c->type == type && !bacmp(&c->dst, ba)) {
507 rcu_read_unlock();
508 return c;
509 }
510 }
511
512 rcu_read_unlock();
513
514 return NULL;
515 }
516
517 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
518 __u8 type, __u16 state)
519 {
520 struct hci_conn_hash *h = &hdev->conn_hash;
521 struct hci_conn *c;
522
523 rcu_read_lock();
524
525 list_for_each_entry_rcu(c, &h->list, list) {
526 if (c->type == type && c->state == state) {
527 rcu_read_unlock();
528 return c;
529 }
530 }
531
532 rcu_read_unlock();
533
534 return NULL;
535 }
536
537 void hci_acl_connect(struct hci_conn *conn);
538 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
539 void hci_add_sco(struct hci_conn *conn, __u16 handle);
540 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
541 void hci_sco_setup(struct hci_conn *conn, __u8 status);
542
543 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
544 int hci_conn_del(struct hci_conn *conn);
545 void hci_conn_hash_flush(struct hci_dev *hdev);
546 void hci_conn_check_pending(struct hci_dev *hdev);
547
548 struct hci_chan *hci_chan_create(struct hci_conn *conn);
549 int hci_chan_del(struct hci_chan *chan);
550 void hci_chan_list_flush(struct hci_conn *conn);
551
552 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
553 __u8 sec_level, __u8 auth_type);
554 int hci_conn_check_link_mode(struct hci_conn *conn);
555 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
556 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
557 int hci_conn_change_link_key(struct hci_conn *conn);
558 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
559
560 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
561
562 void hci_conn_hold_device(struct hci_conn *conn);
563 void hci_conn_put_device(struct hci_conn *conn);
564
565 static inline void hci_conn_hold(struct hci_conn *conn)
566 {
567 atomic_inc(&conn->refcnt);
568 cancel_delayed_work_sync(&conn->disc_work);
569 }
570
571 static inline void hci_conn_put(struct hci_conn *conn)
572 {
573 if (atomic_dec_and_test(&conn->refcnt)) {
574 unsigned long timeo;
575 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
576 del_timer(&conn->idle_timer);
577 if (conn->state == BT_CONNECTED) {
578 timeo = msecs_to_jiffies(conn->disc_timeout);
579 if (!conn->out)
580 timeo *= 2;
581 } else {
582 timeo = msecs_to_jiffies(10);
583 }
584 } else {
585 timeo = msecs_to_jiffies(10);
586 }
587 cancel_delayed_work_sync(&conn->disc_work);
588 queue_delayed_work(conn->hdev->workqueue,
589 &conn->disc_work, timeo);
590 }
591 }
592
593 /* ----- HCI Devices ----- */
594 static inline void hci_dev_put(struct hci_dev *d)
595 {
596 put_device(&d->dev);
597 }
598
599 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
600 {
601 get_device(&d->dev);
602 return d;
603 }
604
605 #define hci_dev_lock(d) mutex_lock(&d->lock)
606 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
607
608 struct hci_dev *hci_dev_get(int index);
609 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
610
611 struct hci_dev *hci_alloc_dev(void);
612 void hci_free_dev(struct hci_dev *hdev);
613 int hci_register_dev(struct hci_dev *hdev);
614 void hci_unregister_dev(struct hci_dev *hdev);
615 int hci_suspend_dev(struct hci_dev *hdev);
616 int hci_resume_dev(struct hci_dev *hdev);
617 int hci_dev_open(__u16 dev);
618 int hci_dev_close(__u16 dev);
619 int hci_dev_reset(__u16 dev);
620 int hci_dev_reset_stat(__u16 dev);
621 int hci_dev_cmd(unsigned int cmd, void __user *arg);
622 int hci_get_dev_list(void __user *arg);
623 int hci_get_dev_info(void __user *arg);
624 int hci_get_conn_list(void __user *arg);
625 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
626 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
627 int hci_inquiry(void __user *arg);
628
629 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
630 int hci_blacklist_clear(struct hci_dev *hdev);
631 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
632 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
633
634 int hci_uuids_clear(struct hci_dev *hdev);
635
636 int hci_link_keys_clear(struct hci_dev *hdev);
637 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
638 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
639 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
640 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
641 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
642 bdaddr_t *bdaddr, u8 type);
643 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
644 u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
645 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
646
647 int hci_remote_oob_data_clear(struct hci_dev *hdev);
648 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
649 bdaddr_t *bdaddr);
650 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
651 u8 *randomizer);
652 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
653
654 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
655 int hci_adv_entries_clear(struct hci_dev *hdev);
656 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
657 int hci_add_adv_entry(struct hci_dev *hdev,
658 struct hci_ev_le_advertising_info *ev);
659
660 void hci_del_off_timer(struct hci_dev *hdev);
661
662 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
663
664 int hci_recv_frame(struct sk_buff *skb);
665 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
666 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
667
668 void hci_init_sysfs(struct hci_dev *hdev);
669 int hci_add_sysfs(struct hci_dev *hdev);
670 void hci_del_sysfs(struct hci_dev *hdev);
671 void hci_conn_init_sysfs(struct hci_conn *conn);
672 void hci_conn_add_sysfs(struct hci_conn *conn);
673 void hci_conn_del_sysfs(struct hci_conn *conn);
674
675 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
676
677 /* ----- LMP capabilities ----- */
678 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
679 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
680 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
681 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
682 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
683 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
684 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
685 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
686
687 /* ----- Extended LMP capabilities ----- */
688 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
689
690 /* ----- HCI protocols ----- */
691 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
692 __u8 type)
693 {
694 switch (type) {
695 case ACL_LINK:
696 return l2cap_connect_ind(hdev, bdaddr);
697
698 case SCO_LINK:
699 case ESCO_LINK:
700 return sco_connect_ind(hdev, bdaddr);
701
702 default:
703 BT_ERR("unknown link type %d", type);
704 return -EINVAL;
705 }
706 }
707
708 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
709 {
710 switch (conn->type) {
711 case ACL_LINK:
712 case LE_LINK:
713 l2cap_connect_cfm(conn, status);
714 break;
715
716 case SCO_LINK:
717 case ESCO_LINK:
718 sco_connect_cfm(conn, status);
719 break;
720
721 default:
722 BT_ERR("unknown link type %d", conn->type);
723 break;
724 }
725
726 if (conn->connect_cfm_cb)
727 conn->connect_cfm_cb(conn, status);
728 }
729
730 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
731 {
732 if (conn->type != ACL_LINK && conn->type != LE_LINK)
733 return HCI_ERROR_REMOTE_USER_TERM;
734
735 return l2cap_disconn_ind(conn);
736 }
737
738 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
739 {
740 switch (conn->type) {
741 case ACL_LINK:
742 case LE_LINK:
743 l2cap_disconn_cfm(conn, reason);
744 break;
745
746 case SCO_LINK:
747 case ESCO_LINK:
748 sco_disconn_cfm(conn, reason);
749 break;
750
751 default:
752 BT_ERR("unknown link type %d", conn->type);
753 break;
754 }
755
756 if (conn->disconn_cfm_cb)
757 conn->disconn_cfm_cb(conn, reason);
758 }
759
760 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
761 {
762 __u8 encrypt;
763
764 if (conn->type != ACL_LINK && conn->type != LE_LINK)
765 return;
766
767 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
768 return;
769
770 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
771 l2cap_security_cfm(conn, status, encrypt);
772
773 if (conn->security_cfm_cb)
774 conn->security_cfm_cb(conn, status);
775 }
776
777 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
778 __u8 encrypt)
779 {
780 if (conn->type != ACL_LINK && conn->type != LE_LINK)
781 return;
782
783 l2cap_security_cfm(conn, status, encrypt);
784
785 if (conn->security_cfm_cb)
786 conn->security_cfm_cb(conn, status);
787 }
788
789 /* ----- HCI callbacks ----- */
790 struct hci_cb {
791 struct list_head list;
792
793 char *name;
794
795 void (*security_cfm) (struct hci_conn *conn, __u8 status,
796 __u8 encrypt);
797 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
798 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
799 };
800
801 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
802 {
803 struct list_head *p;
804 __u8 encrypt;
805
806 hci_proto_auth_cfm(conn, status);
807
808 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
809 return;
810
811 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
812
813 read_lock(&hci_cb_list_lock);
814 list_for_each(p, &hci_cb_list) {
815 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
816 if (cb->security_cfm)
817 cb->security_cfm(conn, status, encrypt);
818 }
819 read_unlock(&hci_cb_list_lock);
820 }
821
822 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
823 __u8 encrypt)
824 {
825 struct list_head *p;
826
827 if (conn->sec_level == BT_SECURITY_SDP)
828 conn->sec_level = BT_SECURITY_LOW;
829
830 if (conn->pending_sec_level > conn->sec_level)
831 conn->sec_level = conn->pending_sec_level;
832
833 hci_proto_encrypt_cfm(conn, status, encrypt);
834
835 read_lock(&hci_cb_list_lock);
836 list_for_each(p, &hci_cb_list) {
837 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
838 if (cb->security_cfm)
839 cb->security_cfm(conn, status, encrypt);
840 }
841 read_unlock(&hci_cb_list_lock);
842 }
843
844 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
845 {
846 struct list_head *p;
847
848 read_lock(&hci_cb_list_lock);
849 list_for_each(p, &hci_cb_list) {
850 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
851 if (cb->key_change_cfm)
852 cb->key_change_cfm(conn, status);
853 }
854 read_unlock(&hci_cb_list_lock);
855 }
856
857 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
858 __u8 role)
859 {
860 struct list_head *p;
861
862 read_lock(&hci_cb_list_lock);
863 list_for_each(p, &hci_cb_list) {
864 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
865 if (cb->role_switch_cfm)
866 cb->role_switch_cfm(conn, status, role);
867 }
868 read_unlock(&hci_cb_list_lock);
869 }
870
871 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
872 {
873 u8 field_len;
874 size_t parsed;
875
876 for (parsed = 0; parsed < data_len - 1; parsed += field_len) {
877 field_len = data[0];
878
879 if (field_len == 0)
880 break;
881
882 parsed += field_len + 1;
883
884 if (parsed > data_len)
885 break;
886
887 if (data[1] == type)
888 return true;
889
890 data += field_len + 1;
891 }
892
893 return false;
894 }
895
896 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
897 u8 data_len)
898 {
899 eir[eir_len++] = sizeof(type) + data_len;
900 eir[eir_len++] = type;
901 memcpy(&eir[eir_len], data, data_len);
902 eir_len += data_len;
903
904 return eir_len;
905 }
906
907 int hci_register_cb(struct hci_cb *hcb);
908 int hci_unregister_cb(struct hci_cb *hcb);
909
910 int hci_register_notifier(struct notifier_block *nb);
911 int hci_unregister_notifier(struct notifier_block *nb);
912
913 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
914 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
915 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
916
917 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
918
919 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
920
921 /* ----- HCI Sockets ----- */
922 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
923 struct sock *skip_sk);
924
925 /* Management interface */
926 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
927 int mgmt_index_added(struct hci_dev *hdev);
928 int mgmt_index_removed(struct hci_dev *hdev);
929 int mgmt_powered(struct hci_dev *hdev, u8 powered);
930 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
931 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
932 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
933 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
934 u8 persistent);
935 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
936 u8 addr_type, u8 *name, u8 name_len,
937 u8 *dev_class);
938 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
939 u8 link_type, u8 addr_type);
940 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
941 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
942 u8 addr_type, u8 status);
943 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
944 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
945 u8 status);
946 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
947 u8 status);
948 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
949 __le32 value, u8 confirm_hint);
950 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
951 u8 status);
952 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
953 bdaddr_t *bdaddr, u8 status);
954 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
955 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
956 u8 status);
957 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
958 bdaddr_t *bdaddr, u8 status);
959 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
960 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
961 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
962 u8 *randomizer, u8 status);
963 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
964 u8 addr_type, u8 *dev_class, s8 rssi,
965 u8 cfm_name, u8 *eir, u16 eir_len);
966 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
967 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
968 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
969 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
970 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
971 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
972 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
973
974 /* HCI info for socket */
975 #define hci_pi(sk) ((struct hci_pinfo *) sk)
976
977 /* HCI socket flags */
978 #define HCI_PI_MGMT_INIT 0
979
980 struct hci_pinfo {
981 struct bt_sock bt;
982 struct hci_dev *hdev;
983 struct hci_filter filter;
984 __u32 cmsg_mask;
985 unsigned short channel;
986 unsigned long flags;
987 };
988
989 /* HCI security filter */
990 #define HCI_SFLT_MAX_OGF 5
991
992 struct hci_sec_filter {
993 __u32 type_mask;
994 __u32 event_mask[2];
995 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
996 };
997
998 /* ----- HCI requests ----- */
999 #define HCI_REQ_DONE 0
1000 #define HCI_REQ_PEND 1
1001 #define HCI_REQ_CANCELED 2
1002
1003 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1004 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1005
1006 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1007
1008 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1009 u16 latency, u16 to_multiplier);
1010 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1011 __u8 ltk[16]);
1012 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
1013 void hci_le_ltk_neg_reply(struct hci_conn *conn);
1014
1015 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1016 int hci_cancel_inquiry(struct hci_dev *hdev);
1017
1018 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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