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Bluetooth: Add a convenience function to check for SSP enabled
[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 bool hci_conn_ssp_enabled(struct hci_conn *conn)
415 {
416 struct hci_dev *hdev = conn->hdev;
417 return (test_bit(HCI_SSP_ENABLED, &hdev->flags) &&
418 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
419 }
420
421 static inline void hci_conn_hash_init(struct hci_dev *hdev)
422 {
423 struct hci_conn_hash *h = &hdev->conn_hash;
424 INIT_LIST_HEAD(&h->list);
425 h->acl_num = 0;
426 h->sco_num = 0;
427 h->le_num = 0;
428 }
429
430 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
431 {
432 struct hci_conn_hash *h = &hdev->conn_hash;
433 list_add_rcu(&c->list, &h->list);
434 switch (c->type) {
435 case ACL_LINK:
436 h->acl_num++;
437 break;
438 case LE_LINK:
439 h->le_num++;
440 break;
441 case SCO_LINK:
442 case ESCO_LINK:
443 h->sco_num++;
444 break;
445 }
446 }
447
448 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
449 {
450 struct hci_conn_hash *h = &hdev->conn_hash;
451
452 list_del_rcu(&c->list);
453 synchronize_rcu();
454
455 switch (c->type) {
456 case ACL_LINK:
457 h->acl_num--;
458 break;
459 case LE_LINK:
460 h->le_num--;
461 break;
462 case SCO_LINK:
463 case ESCO_LINK:
464 h->sco_num--;
465 break;
466 }
467 }
468
469 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
470 {
471 struct hci_conn_hash *h = &hdev->conn_hash;
472 switch (type) {
473 case ACL_LINK:
474 return h->acl_num;
475 case LE_LINK:
476 return h->le_num;
477 case SCO_LINK:
478 case ESCO_LINK:
479 return h->sco_num;
480 default:
481 return 0;
482 }
483 }
484
485 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
486 __u16 handle)
487 {
488 struct hci_conn_hash *h = &hdev->conn_hash;
489 struct hci_conn *c;
490
491 rcu_read_lock();
492
493 list_for_each_entry_rcu(c, &h->list, list) {
494 if (c->handle == handle) {
495 rcu_read_unlock();
496 return c;
497 }
498 }
499 rcu_read_unlock();
500
501 return NULL;
502 }
503
504 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
505 __u8 type, bdaddr_t *ba)
506 {
507 struct hci_conn_hash *h = &hdev->conn_hash;
508 struct hci_conn *c;
509
510 rcu_read_lock();
511
512 list_for_each_entry_rcu(c, &h->list, list) {
513 if (c->type == type && !bacmp(&c->dst, ba)) {
514 rcu_read_unlock();
515 return c;
516 }
517 }
518
519 rcu_read_unlock();
520
521 return NULL;
522 }
523
524 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
525 __u8 type, __u16 state)
526 {
527 struct hci_conn_hash *h = &hdev->conn_hash;
528 struct hci_conn *c;
529
530 rcu_read_lock();
531
532 list_for_each_entry_rcu(c, &h->list, list) {
533 if (c->type == type && c->state == state) {
534 rcu_read_unlock();
535 return c;
536 }
537 }
538
539 rcu_read_unlock();
540
541 return NULL;
542 }
543
544 void hci_acl_connect(struct hci_conn *conn);
545 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
546 void hci_add_sco(struct hci_conn *conn, __u16 handle);
547 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
548 void hci_sco_setup(struct hci_conn *conn, __u8 status);
549
550 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
551 int hci_conn_del(struct hci_conn *conn);
552 void hci_conn_hash_flush(struct hci_dev *hdev);
553 void hci_conn_check_pending(struct hci_dev *hdev);
554
555 struct hci_chan *hci_chan_create(struct hci_conn *conn);
556 int hci_chan_del(struct hci_chan *chan);
557 void hci_chan_list_flush(struct hci_conn *conn);
558
559 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
560 __u8 sec_level, __u8 auth_type);
561 int hci_conn_check_link_mode(struct hci_conn *conn);
562 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
563 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
564 int hci_conn_change_link_key(struct hci_conn *conn);
565 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
566
567 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
568
569 void hci_conn_hold_device(struct hci_conn *conn);
570 void hci_conn_put_device(struct hci_conn *conn);
571
572 static inline void hci_conn_hold(struct hci_conn *conn)
573 {
574 atomic_inc(&conn->refcnt);
575 cancel_delayed_work_sync(&conn->disc_work);
576 }
577
578 static inline void hci_conn_put(struct hci_conn *conn)
579 {
580 if (atomic_dec_and_test(&conn->refcnt)) {
581 unsigned long timeo;
582 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
583 del_timer(&conn->idle_timer);
584 if (conn->state == BT_CONNECTED) {
585 timeo = msecs_to_jiffies(conn->disc_timeout);
586 if (!conn->out)
587 timeo *= 2;
588 } else {
589 timeo = msecs_to_jiffies(10);
590 }
591 } else {
592 timeo = msecs_to_jiffies(10);
593 }
594 cancel_delayed_work_sync(&conn->disc_work);
595 queue_delayed_work(conn->hdev->workqueue,
596 &conn->disc_work, timeo);
597 }
598 }
599
600 /* ----- HCI Devices ----- */
601 static inline void hci_dev_put(struct hci_dev *d)
602 {
603 put_device(&d->dev);
604 }
605
606 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
607 {
608 get_device(&d->dev);
609 return d;
610 }
611
612 #define hci_dev_lock(d) mutex_lock(&d->lock)
613 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
614
615 struct hci_dev *hci_dev_get(int index);
616 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
617
618 struct hci_dev *hci_alloc_dev(void);
619 void hci_free_dev(struct hci_dev *hdev);
620 int hci_register_dev(struct hci_dev *hdev);
621 void hci_unregister_dev(struct hci_dev *hdev);
622 int hci_suspend_dev(struct hci_dev *hdev);
623 int hci_resume_dev(struct hci_dev *hdev);
624 int hci_dev_open(__u16 dev);
625 int hci_dev_close(__u16 dev);
626 int hci_dev_reset(__u16 dev);
627 int hci_dev_reset_stat(__u16 dev);
628 int hci_dev_cmd(unsigned int cmd, void __user *arg);
629 int hci_get_dev_list(void __user *arg);
630 int hci_get_dev_info(void __user *arg);
631 int hci_get_conn_list(void __user *arg);
632 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
633 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
634 int hci_inquiry(void __user *arg);
635
636 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
637 int hci_blacklist_clear(struct hci_dev *hdev);
638 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
639 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
640
641 int hci_uuids_clear(struct hci_dev *hdev);
642
643 int hci_link_keys_clear(struct hci_dev *hdev);
644 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
645 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
646 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
647 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
648 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
649 bdaddr_t *bdaddr, u8 type);
650 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
651 u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
652 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
653
654 int hci_remote_oob_data_clear(struct hci_dev *hdev);
655 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
656 bdaddr_t *bdaddr);
657 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
658 u8 *randomizer);
659 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
660
661 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
662 int hci_adv_entries_clear(struct hci_dev *hdev);
663 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
664 int hci_add_adv_entry(struct hci_dev *hdev,
665 struct hci_ev_le_advertising_info *ev);
666
667 void hci_del_off_timer(struct hci_dev *hdev);
668
669 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
670
671 int hci_recv_frame(struct sk_buff *skb);
672 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
673 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
674
675 void hci_init_sysfs(struct hci_dev *hdev);
676 int hci_add_sysfs(struct hci_dev *hdev);
677 void hci_del_sysfs(struct hci_dev *hdev);
678 void hci_conn_init_sysfs(struct hci_conn *conn);
679 void hci_conn_add_sysfs(struct hci_conn *conn);
680 void hci_conn_del_sysfs(struct hci_conn *conn);
681
682 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
683
684 /* ----- LMP capabilities ----- */
685 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
686 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
687 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
688 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
689 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
690 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
691 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH)
692 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE)
693
694 /* ----- Extended LMP capabilities ----- */
695 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE)
696
697 /* ----- HCI protocols ----- */
698 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
699 __u8 type)
700 {
701 switch (type) {
702 case ACL_LINK:
703 return l2cap_connect_ind(hdev, bdaddr);
704
705 case SCO_LINK:
706 case ESCO_LINK:
707 return sco_connect_ind(hdev, bdaddr);
708
709 default:
710 BT_ERR("unknown link type %d", type);
711 return -EINVAL;
712 }
713 }
714
715 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
716 {
717 switch (conn->type) {
718 case ACL_LINK:
719 case LE_LINK:
720 l2cap_connect_cfm(conn, status);
721 break;
722
723 case SCO_LINK:
724 case ESCO_LINK:
725 sco_connect_cfm(conn, status);
726 break;
727
728 default:
729 BT_ERR("unknown link type %d", conn->type);
730 break;
731 }
732
733 if (conn->connect_cfm_cb)
734 conn->connect_cfm_cb(conn, status);
735 }
736
737 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
738 {
739 if (conn->type != ACL_LINK && conn->type != LE_LINK)
740 return HCI_ERROR_REMOTE_USER_TERM;
741
742 return l2cap_disconn_ind(conn);
743 }
744
745 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
746 {
747 switch (conn->type) {
748 case ACL_LINK:
749 case LE_LINK:
750 l2cap_disconn_cfm(conn, reason);
751 break;
752
753 case SCO_LINK:
754 case ESCO_LINK:
755 sco_disconn_cfm(conn, reason);
756 break;
757
758 default:
759 BT_ERR("unknown link type %d", conn->type);
760 break;
761 }
762
763 if (conn->disconn_cfm_cb)
764 conn->disconn_cfm_cb(conn, reason);
765 }
766
767 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
768 {
769 __u8 encrypt;
770
771 if (conn->type != ACL_LINK && conn->type != LE_LINK)
772 return;
773
774 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
775 return;
776
777 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
778 l2cap_security_cfm(conn, status, encrypt);
779
780 if (conn->security_cfm_cb)
781 conn->security_cfm_cb(conn, status);
782 }
783
784 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
785 __u8 encrypt)
786 {
787 if (conn->type != ACL_LINK && conn->type != LE_LINK)
788 return;
789
790 l2cap_security_cfm(conn, status, encrypt);
791
792 if (conn->security_cfm_cb)
793 conn->security_cfm_cb(conn, status);
794 }
795
796 /* ----- HCI callbacks ----- */
797 struct hci_cb {
798 struct list_head list;
799
800 char *name;
801
802 void (*security_cfm) (struct hci_conn *conn, __u8 status,
803 __u8 encrypt);
804 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
805 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
806 };
807
808 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
809 {
810 struct list_head *p;
811 __u8 encrypt;
812
813 hci_proto_auth_cfm(conn, status);
814
815 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
816 return;
817
818 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
819
820 read_lock(&hci_cb_list_lock);
821 list_for_each(p, &hci_cb_list) {
822 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
823 if (cb->security_cfm)
824 cb->security_cfm(conn, status, encrypt);
825 }
826 read_unlock(&hci_cb_list_lock);
827 }
828
829 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
830 __u8 encrypt)
831 {
832 struct list_head *p;
833
834 if (conn->sec_level == BT_SECURITY_SDP)
835 conn->sec_level = BT_SECURITY_LOW;
836
837 if (conn->pending_sec_level > conn->sec_level)
838 conn->sec_level = conn->pending_sec_level;
839
840 hci_proto_encrypt_cfm(conn, status, encrypt);
841
842 read_lock(&hci_cb_list_lock);
843 list_for_each(p, &hci_cb_list) {
844 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
845 if (cb->security_cfm)
846 cb->security_cfm(conn, status, encrypt);
847 }
848 read_unlock(&hci_cb_list_lock);
849 }
850
851 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
852 {
853 struct list_head *p;
854
855 read_lock(&hci_cb_list_lock);
856 list_for_each(p, &hci_cb_list) {
857 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
858 if (cb->key_change_cfm)
859 cb->key_change_cfm(conn, status);
860 }
861 read_unlock(&hci_cb_list_lock);
862 }
863
864 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
865 __u8 role)
866 {
867 struct list_head *p;
868
869 read_lock(&hci_cb_list_lock);
870 list_for_each(p, &hci_cb_list) {
871 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
872 if (cb->role_switch_cfm)
873 cb->role_switch_cfm(conn, status, role);
874 }
875 read_unlock(&hci_cb_list_lock);
876 }
877
878 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
879 {
880 u8 field_len;
881 size_t parsed;
882
883 for (parsed = 0; parsed < data_len - 1; parsed += field_len) {
884 field_len = data[0];
885
886 if (field_len == 0)
887 break;
888
889 parsed += field_len + 1;
890
891 if (parsed > data_len)
892 break;
893
894 if (data[1] == type)
895 return true;
896
897 data += field_len + 1;
898 }
899
900 return false;
901 }
902
903 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
904 u8 data_len)
905 {
906 eir[eir_len++] = sizeof(type) + data_len;
907 eir[eir_len++] = type;
908 memcpy(&eir[eir_len], data, data_len);
909 eir_len += data_len;
910
911 return eir_len;
912 }
913
914 int hci_register_cb(struct hci_cb *hcb);
915 int hci_unregister_cb(struct hci_cb *hcb);
916
917 int hci_register_notifier(struct notifier_block *nb);
918 int hci_unregister_notifier(struct notifier_block *nb);
919
920 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
921 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
922 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
923
924 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
925
926 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
927
928 /* ----- HCI Sockets ----- */
929 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
930 struct sock *skip_sk);
931
932 /* Management interface */
933 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
934 int mgmt_index_added(struct hci_dev *hdev);
935 int mgmt_index_removed(struct hci_dev *hdev);
936 int mgmt_powered(struct hci_dev *hdev, u8 powered);
937 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
938 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
939 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
940 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
941 u8 persistent);
942 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
943 u8 addr_type, u8 *name, u8 name_len,
944 u8 *dev_class);
945 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
946 u8 link_type, u8 addr_type);
947 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
948 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
949 u8 addr_type, u8 status);
950 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
951 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
952 u8 status);
953 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
954 u8 status);
955 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
956 __le32 value, u8 confirm_hint);
957 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
958 u8 status);
959 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
960 bdaddr_t *bdaddr, u8 status);
961 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
962 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
963 u8 status);
964 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
965 bdaddr_t *bdaddr, u8 status);
966 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
967 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
968 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
969 u8 *randomizer, u8 status);
970 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
971 u8 addr_type, u8 *dev_class, s8 rssi,
972 u8 cfm_name, u8 *eir, u16 eir_len);
973 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
974 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
975 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
976 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
977 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
978 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
979 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
980
981 /* HCI info for socket */
982 #define hci_pi(sk) ((struct hci_pinfo *) sk)
983
984 /* HCI socket flags */
985 #define HCI_PI_MGMT_INIT 0
986
987 struct hci_pinfo {
988 struct bt_sock bt;
989 struct hci_dev *hdev;
990 struct hci_filter filter;
991 __u32 cmsg_mask;
992 unsigned short channel;
993 unsigned long flags;
994 };
995
996 /* HCI security filter */
997 #define HCI_SFLT_MAX_OGF 5
998
999 struct hci_sec_filter {
1000 __u32 type_mask;
1001 __u32 event_mask[2];
1002 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1003 };
1004
1005 /* ----- HCI requests ----- */
1006 #define HCI_REQ_DONE 0
1007 #define HCI_REQ_PEND 1
1008 #define HCI_REQ_CANCELED 2
1009
1010 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1011 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1012
1013 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1014
1015 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1016 u16 latency, u16 to_multiplier);
1017 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1018 __u8 ltk[16]);
1019 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
1020 void hci_le_ltk_neg_reply(struct hci_conn *conn);
1021
1022 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1023 int hci_cancel_inquiry(struct hci_dev *hdev);
1024
1025 #endif /* __HCI_CORE_H */
Linux kernel - Deliverables
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