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TOMOYO Linux Cross Reference
Linux/include/net/bluetooth/hci_core.h

Version: ~ [ linux-5.6-rc1 ] ~ [ linux-5.5.2 ] ~ [ linux-5.4.17 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.102 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.170 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.213 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.213 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 size;
 90         u8 svc_hint;
 91 };
 92 
 93 struct smp_ltk {
 94         struct list_head list;
 95         bdaddr_t bdaddr;
 96         u8 bdaddr_type;
 97         u8 authenticated;
 98         u8 type;
 99         u8 enc_size;
100         __le16 ediv;
101         u8 rand[8];
102         u8 val[16];
103 } __packed;
104 
105 struct link_key {
106         struct list_head list;
107         bdaddr_t bdaddr;
108         u8 type;
109         u8 val[HCI_LINK_KEY_SIZE];
110         u8 pin_len;
111 };
112 
113 struct oob_data {
114         struct list_head list;
115         bdaddr_t bdaddr;
116         u8 hash[16];
117         u8 randomizer[16];
118 };
119 
120 #define HCI_MAX_SHORT_NAME_LENGTH       10
121 
122 struct amp_assoc {
123         __u16   len;
124         __u16   offset;
125         __u16   rem_len;
126         __u16   len_so_far;
127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
128 };
129 
130 #define HCI_MAX_PAGES   3
131 
132 #define NUM_REASSEMBLY 4
133 struct hci_dev {
134         struct list_head list;
135         struct mutex    lock;
136 
137         char            name[8];
138         unsigned long   flags;
139         __u16           id;
140         __u8            bus;
141         __u8            dev_type;
142         bdaddr_t        bdaddr;
143         __u8            dev_name[HCI_MAX_NAME_LENGTH];
144         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
145         __u8            eir[HCI_MAX_EIR_LENGTH];
146         __u8            dev_class[3];
147         __u8            major_class;
148         __u8            minor_class;
149         __u8            max_page;
150         __u8            features[HCI_MAX_PAGES][8];
151         __u8            le_features[8];
152         __u8            le_white_list_size;
153         __u8            le_states[8];
154         __u8            commands[64];
155         __u8            hci_ver;
156         __u16           hci_rev;
157         __u8            lmp_ver;
158         __u16           manufacturer;
159         __u16           lmp_subver;
160         __u16           voice_setting;
161         __u8            io_capability;
162         __s8            inq_tx_power;
163         __u16           page_scan_interval;
164         __u16           page_scan_window;
165         __u8            page_scan_type;
166 
167         __u16           devid_source;
168         __u16           devid_vendor;
169         __u16           devid_product;
170         __u16           devid_version;
171 
172         __u16           pkt_type;
173         __u16           esco_type;
174         __u16           link_policy;
175         __u16           link_mode;
176 
177         __u32           idle_timeout;
178         __u16           sniff_min_interval;
179         __u16           sniff_max_interval;
180 
181         __u8            amp_status;
182         __u32           amp_total_bw;
183         __u32           amp_max_bw;
184         __u32           amp_min_latency;
185         __u32           amp_max_pdu;
186         __u8            amp_type;
187         __u16           amp_pal_cap;
188         __u16           amp_assoc_size;
189         __u32           amp_max_flush_to;
190         __u32           amp_be_flush_to;
191 
192         struct amp_assoc        loc_assoc;
193 
194         __u8            flow_ctl_mode;
195 
196         unsigned int    auto_accept_delay;
197 
198         unsigned long   quirks;
199 
200         atomic_t        cmd_cnt;
201         unsigned int    acl_cnt;
202         unsigned int    sco_cnt;
203         unsigned int    le_cnt;
204 
205         unsigned int    acl_mtu;
206         unsigned int    sco_mtu;
207         unsigned int    le_mtu;
208         unsigned int    acl_pkts;
209         unsigned int    sco_pkts;
210         unsigned int    le_pkts;
211 
212         __u16           block_len;
213         __u16           block_mtu;
214         __u16           num_blocks;
215         __u16           block_cnt;
216 
217         unsigned long   acl_last_tx;
218         unsigned long   sco_last_tx;
219         unsigned long   le_last_tx;
220 
221         struct workqueue_struct *workqueue;
222         struct workqueue_struct *req_workqueue;
223 
224         struct work_struct      power_on;
225         struct delayed_work     power_off;
226 
227         __u16                   discov_timeout;
228         struct delayed_work     discov_off;
229 
230         struct delayed_work     service_cache;
231 
232         struct timer_list       cmd_timer;
233 
234         struct work_struct      rx_work;
235         struct work_struct      cmd_work;
236         struct work_struct      tx_work;
237 
238         struct sk_buff_head     rx_q;
239         struct sk_buff_head     raw_q;
240         struct sk_buff_head     cmd_q;
241 
242         struct sk_buff          *recv_evt;
243         struct sk_buff          *sent_cmd;
244         struct sk_buff          *reassembly[NUM_REASSEMBLY];
245 
246         struct mutex            req_lock;
247         wait_queue_head_t       req_wait_q;
248         __u32                   req_status;
249         __u32                   req_result;
250 
251         struct list_head        mgmt_pending;
252 
253         struct discovery_state  discovery;
254         struct hci_conn_hash    conn_hash;
255         struct list_head        blacklist;
256 
257         struct list_head        uuids;
258 
259         struct list_head        link_keys;
260 
261         struct list_head        long_term_keys;
262 
263         struct list_head        remote_oob_data;
264 
265         struct hci_dev_stats    stat;
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         __s8                    adv_tx_power;
280         __u8                    adv_data[HCI_MAX_AD_LENGTH];
281         __u8                    adv_data_len;
282 
283         int (*open)(struct hci_dev *hdev);
284         int (*close)(struct hci_dev *hdev);
285         int (*flush)(struct hci_dev *hdev);
286         int (*setup)(struct hci_dev *hdev);
287         int (*send)(struct sk_buff *skb);
288         void (*notify)(struct hci_dev *hdev, unsigned int evt);
289         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
290 };
291 
292 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
293 
294 struct hci_conn {
295         struct list_head list;
296 
297         atomic_t        refcnt;
298 
299         bdaddr_t        dst;
300         __u8            dst_type;
301         __u16           handle;
302         __u16           state;
303         __u8            mode;
304         __u8            type;
305         bool            out;
306         __u8            attempt;
307         __u8            dev_class[3];
308         __u8            features[HCI_MAX_PAGES][8];
309         __u16           interval;
310         __u16           pkt_type;
311         __u16           link_policy;
312         __u32           link_mode;
313         __u8            key_type;
314         __u8            auth_type;
315         __u8            sec_level;
316         __u8            pending_sec_level;
317         __u8            pin_length;
318         __u8            enc_key_size;
319         __u8            io_capability;
320         __u32           passkey_notify;
321         __u8            passkey_entered;
322         __u16           disc_timeout;
323         unsigned long   flags;
324 
325         __u8            remote_cap;
326         __u8            remote_auth;
327         __u8            remote_id;
328         bool            flush_key;
329 
330         unsigned int    sent;
331 
332         struct sk_buff_head data_q;
333         struct list_head chan_list;
334 
335         struct delayed_work disc_work;
336         struct timer_list idle_timer;
337         struct timer_list auto_accept_timer;
338 
339         struct device   dev;
340 
341         struct hci_dev  *hdev;
342         void            *l2cap_data;
343         void            *sco_data;
344         void            *smp_conn;
345         struct amp_mgr  *amp_mgr;
346 
347         struct hci_conn *link;
348 
349         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
350         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
351         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
352 };
353 
354 struct hci_chan {
355         struct list_head list;
356         __u16 handle;
357         struct hci_conn *conn;
358         struct sk_buff_head data_q;
359         unsigned int    sent;
360         __u8            state;
361 };
362 
363 extern struct list_head hci_dev_list;
364 extern struct list_head hci_cb_list;
365 extern rwlock_t hci_dev_list_lock;
366 extern rwlock_t hci_cb_list_lock;
367 
368 /* ----- HCI interface to upper protocols ----- */
369 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
370 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
371 extern int l2cap_disconn_ind(struct hci_conn *hcon);
372 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
373 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
374 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
375                               u16 flags);
376 
377 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
378 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
379 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
380 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
381 
382 /* ----- Inquiry cache ----- */
383 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
384 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
385 
386 static inline void discovery_init(struct hci_dev *hdev)
387 {
388         hdev->discovery.state = DISCOVERY_STOPPED;
389         INIT_LIST_HEAD(&hdev->discovery.all);
390         INIT_LIST_HEAD(&hdev->discovery.unknown);
391         INIT_LIST_HEAD(&hdev->discovery.resolve);
392 }
393 
394 bool hci_discovery_active(struct hci_dev *hdev);
395 
396 void hci_discovery_set_state(struct hci_dev *hdev, int state);
397 
398 static inline int inquiry_cache_empty(struct hci_dev *hdev)
399 {
400         return list_empty(&hdev->discovery.all);
401 }
402 
403 static inline long inquiry_cache_age(struct hci_dev *hdev)
404 {
405         struct discovery_state *c = &hdev->discovery;
406         return jiffies - c->timestamp;
407 }
408 
409 static inline long inquiry_entry_age(struct inquiry_entry *e)
410 {
411         return jiffies - e->timestamp;
412 }
413 
414 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
415                                                bdaddr_t *bdaddr);
416 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
417                                                        bdaddr_t *bdaddr);
418 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
419                                                        bdaddr_t *bdaddr,
420                                                        int state);
421 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
422                                       struct inquiry_entry *ie);
423 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
424                               bool name_known, bool *ssp);
425 void hci_inquiry_cache_flush(struct hci_dev *hdev);
426 
427 /* ----- HCI Connections ----- */
428 enum {
429         HCI_CONN_AUTH_PEND,
430         HCI_CONN_REAUTH_PEND,
431         HCI_CONN_ENCRYPT_PEND,
432         HCI_CONN_RSWITCH_PEND,
433         HCI_CONN_MODE_CHANGE_PEND,
434         HCI_CONN_SCO_SETUP_PEND,
435         HCI_CONN_LE_SMP_PEND,
436         HCI_CONN_MGMT_CONNECTED,
437         HCI_CONN_SSP_ENABLED,
438         HCI_CONN_POWER_SAVE,
439         HCI_CONN_REMOTE_OOB,
440 };
441 
442 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
443 {
444         struct hci_dev *hdev = conn->hdev;
445         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
446                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
447 }
448 
449 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
450 {
451         struct hci_conn_hash *h = &hdev->conn_hash;
452         list_add_rcu(&c->list, &h->list);
453         switch (c->type) {
454         case ACL_LINK:
455                 h->acl_num++;
456                 break;
457         case AMP_LINK:
458                 h->amp_num++;
459                 break;
460         case LE_LINK:
461                 h->le_num++;
462                 break;
463         case SCO_LINK:
464         case ESCO_LINK:
465                 h->sco_num++;
466                 break;
467         }
468 }
469 
470 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
471 {
472         struct hci_conn_hash *h = &hdev->conn_hash;
473 
474         list_del_rcu(&c->list);
475         synchronize_rcu();
476 
477         switch (c->type) {
478         case ACL_LINK:
479                 h->acl_num--;
480                 break;
481         case AMP_LINK:
482                 h->amp_num--;
483                 break;
484         case LE_LINK:
485                 h->le_num--;
486                 break;
487         case SCO_LINK:
488         case ESCO_LINK:
489                 h->sco_num--;
490                 break;
491         }
492 }
493 
494 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
495 {
496         struct hci_conn_hash *h = &hdev->conn_hash;
497         switch (type) {
498         case ACL_LINK:
499                 return h->acl_num;
500         case AMP_LINK:
501                 return h->amp_num;
502         case LE_LINK:
503                 return h->le_num;
504         case SCO_LINK:
505         case ESCO_LINK:
506                 return h->sco_num;
507         default:
508                 return 0;
509         }
510 }
511 
512 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
513                                                                 __u16 handle)
514 {
515         struct hci_conn_hash *h = &hdev->conn_hash;
516         struct hci_conn  *c;
517 
518         rcu_read_lock();
519 
520         list_for_each_entry_rcu(c, &h->list, list) {
521                 if (c->handle == handle) {
522                         rcu_read_unlock();
523                         return c;
524                 }
525         }
526         rcu_read_unlock();
527 
528         return NULL;
529 }
530 
531 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
532                                                         __u8 type, bdaddr_t *ba)
533 {
534         struct hci_conn_hash *h = &hdev->conn_hash;
535         struct hci_conn  *c;
536 
537         rcu_read_lock();
538 
539         list_for_each_entry_rcu(c, &h->list, list) {
540                 if (c->type == type && !bacmp(&c->dst, ba)) {
541                         rcu_read_unlock();
542                         return c;
543                 }
544         }
545 
546         rcu_read_unlock();
547 
548         return NULL;
549 }
550 
551 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
552                                                         __u8 type, __u16 state)
553 {
554         struct hci_conn_hash *h = &hdev->conn_hash;
555         struct hci_conn  *c;
556 
557         rcu_read_lock();
558 
559         list_for_each_entry_rcu(c, &h->list, list) {
560                 if (c->type == type && c->state == state) {
561                         rcu_read_unlock();
562                         return c;
563                 }
564         }
565 
566         rcu_read_unlock();
567 
568         return NULL;
569 }
570 
571 void hci_disconnect(struct hci_conn *conn, __u8 reason);
572 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
573 void hci_sco_setup(struct hci_conn *conn, __u8 status);
574 
575 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
576 int hci_conn_del(struct hci_conn *conn);
577 void hci_conn_hash_flush(struct hci_dev *hdev);
578 void hci_conn_check_pending(struct hci_dev *hdev);
579 
580 struct hci_chan *hci_chan_create(struct hci_conn *conn);
581 void hci_chan_del(struct hci_chan *chan);
582 void hci_chan_list_flush(struct hci_conn *conn);
583 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
584 
585 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
586                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
587 int hci_conn_check_link_mode(struct hci_conn *conn);
588 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
589 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
590 int hci_conn_change_link_key(struct hci_conn *conn);
591 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
592 
593 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
594 
595 /*
596  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
597  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
598  * working or anything else. They just guarantee that the object is available
599  * and can be dereferenced. So you can use its locks, local variables and any
600  * other constant data.
601  * Before accessing runtime data, you _must_ lock the object and then check that
602  * it is still running. As soon as you release the locks, the connection might
603  * get dropped, though.
604  *
605  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
606  * how long the underlying connection is held. So every channel that runs on the
607  * hci_conn object calls this to prevent the connection from disappearing. As
608  * long as you hold a device, you must also guarantee that you have a valid
609  * reference to the device via hci_conn_get() (or the initial reference from
610  * hci_conn_add()).
611  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
612  * break because nobody cares for that. But this means, we cannot use
613  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
614  */
615 
616 static inline void hci_conn_get(struct hci_conn *conn)
617 {
618         get_device(&conn->dev);
619 }
620 
621 static inline void hci_conn_put(struct hci_conn *conn)
622 {
623         put_device(&conn->dev);
624 }
625 
626 static inline void hci_conn_hold(struct hci_conn *conn)
627 {
628         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
629 
630         atomic_inc(&conn->refcnt);
631         cancel_delayed_work(&conn->disc_work);
632 }
633 
634 static inline void hci_conn_drop(struct hci_conn *conn)
635 {
636         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
637 
638         if (atomic_dec_and_test(&conn->refcnt)) {
639                 unsigned long timeo;
640 
641                 switch (conn->type) {
642                 case ACL_LINK:
643                 case LE_LINK:
644                         del_timer(&conn->idle_timer);
645                         if (conn->state == BT_CONNECTED) {
646                                 timeo = conn->disc_timeout;
647                                 if (!conn->out)
648                                         timeo *= 2;
649                         } else {
650                                 timeo = msecs_to_jiffies(10);
651                         }
652                         break;
653 
654                 case AMP_LINK:
655                         timeo = conn->disc_timeout;
656                         break;
657 
658                 default:
659                         timeo = msecs_to_jiffies(10);
660                         break;
661                 }
662 
663                 cancel_delayed_work(&conn->disc_work);
664                 queue_delayed_work(conn->hdev->workqueue,
665                                    &conn->disc_work, timeo);
666         }
667 }
668 
669 /* ----- HCI Devices ----- */
670 static inline void hci_dev_put(struct hci_dev *d)
671 {
672         BT_DBG("%s orig refcnt %d", d->name,
673                atomic_read(&d->dev.kobj.kref.refcount));
674 
675         put_device(&d->dev);
676 }
677 
678 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
679 {
680         BT_DBG("%s orig refcnt %d", d->name,
681                atomic_read(&d->dev.kobj.kref.refcount));
682 
683         get_device(&d->dev);
684         return d;
685 }
686 
687 #define hci_dev_lock(d)         mutex_lock(&d->lock)
688 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
689 
690 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
691 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
692 
693 static inline void *hci_get_drvdata(struct hci_dev *hdev)
694 {
695         return dev_get_drvdata(&hdev->dev);
696 }
697 
698 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
699 {
700         dev_set_drvdata(&hdev->dev, data);
701 }
702 
703 /* hci_dev_list shall be locked */
704 static inline uint8_t __hci_num_ctrl(void)
705 {
706         uint8_t count = 0;
707         struct list_head *p;
708 
709         list_for_each(p, &hci_dev_list) {
710                 count++;
711         }
712 
713         return count;
714 }
715 
716 struct hci_dev *hci_dev_get(int index);
717 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
718 
719 struct hci_dev *hci_alloc_dev(void);
720 void hci_free_dev(struct hci_dev *hdev);
721 int hci_register_dev(struct hci_dev *hdev);
722 void hci_unregister_dev(struct hci_dev *hdev);
723 int hci_suspend_dev(struct hci_dev *hdev);
724 int hci_resume_dev(struct hci_dev *hdev);
725 int hci_dev_open(__u16 dev);
726 int hci_dev_close(__u16 dev);
727 int hci_dev_reset(__u16 dev);
728 int hci_dev_reset_stat(__u16 dev);
729 int hci_dev_cmd(unsigned int cmd, void __user *arg);
730 int hci_get_dev_list(void __user *arg);
731 int hci_get_dev_info(void __user *arg);
732 int hci_get_conn_list(void __user *arg);
733 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
734 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
735 int hci_inquiry(void __user *arg);
736 
737 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
738                                          bdaddr_t *bdaddr);
739 int hci_blacklist_clear(struct hci_dev *hdev);
740 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
741 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
742 
743 int hci_uuids_clear(struct hci_dev *hdev);
744 
745 int hci_link_keys_clear(struct hci_dev *hdev);
746 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
747 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
748                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
749 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
750 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
751                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
752                 __le16 ediv, u8 rand[8]);
753 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
754                                      u8 addr_type);
755 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
756 int hci_smp_ltks_clear(struct hci_dev *hdev);
757 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
758 
759 int hci_remote_oob_data_clear(struct hci_dev *hdev);
760 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
761                                                         bdaddr_t *bdaddr);
762 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
763                                                                 u8 *randomizer);
764 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
765 
766 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
767 
768 int hci_recv_frame(struct sk_buff *skb);
769 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
770 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
771 
772 void hci_init_sysfs(struct hci_dev *hdev);
773 int hci_add_sysfs(struct hci_dev *hdev);
774 void hci_del_sysfs(struct hci_dev *hdev);
775 void hci_conn_init_sysfs(struct hci_conn *conn);
776 void hci_conn_add_sysfs(struct hci_conn *conn);
777 void hci_conn_del_sysfs(struct hci_conn *conn);
778 
779 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
780 
781 /* ----- LMP capabilities ----- */
782 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
783 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
784 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
785 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
786 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
787 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
788 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
789 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
790 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
791 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
792 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
793 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
794 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
795 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
796 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
797 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
798 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
799 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
800 
801 /* ----- Extended LMP capabilities ----- */
802 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
803 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
804 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
805 
806 /* returns true if at least one AMP active */
807 static inline bool hci_amp_capable(void)
808 {
809         struct hci_dev *hdev;
810         bool ret = false;
811 
812         read_lock(&hci_dev_list_lock);
813         list_for_each_entry(hdev, &hci_dev_list, list)
814                 if (hdev->amp_type == HCI_AMP &&
815                     test_bit(HCI_UP, &hdev->flags))
816                         ret = true;
817         read_unlock(&hci_dev_list_lock);
818 
819         return ret;
820 }
821 
822 /* ----- HCI protocols ----- */
823 #define HCI_PROTO_DEFER             0x01
824 
825 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
826                                         __u8 type, __u8 *flags)
827 {
828         switch (type) {
829         case ACL_LINK:
830                 return l2cap_connect_ind(hdev, bdaddr);
831 
832         case SCO_LINK:
833         case ESCO_LINK:
834                 return sco_connect_ind(hdev, bdaddr, flags);
835 
836         default:
837                 BT_ERR("unknown link type %d", type);
838                 return -EINVAL;
839         }
840 }
841 
842 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
843 {
844         switch (conn->type) {
845         case ACL_LINK:
846         case LE_LINK:
847                 l2cap_connect_cfm(conn, status);
848                 break;
849 
850         case SCO_LINK:
851         case ESCO_LINK:
852                 sco_connect_cfm(conn, status);
853                 break;
854 
855         default:
856                 BT_ERR("unknown link type %d", conn->type);
857                 break;
858         }
859 
860         if (conn->connect_cfm_cb)
861                 conn->connect_cfm_cb(conn, status);
862 }
863 
864 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
865 {
866         if (conn->type != ACL_LINK && conn->type != LE_LINK)
867                 return HCI_ERROR_REMOTE_USER_TERM;
868 
869         return l2cap_disconn_ind(conn);
870 }
871 
872 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
873 {
874         switch (conn->type) {
875         case ACL_LINK:
876         case LE_LINK:
877                 l2cap_disconn_cfm(conn, reason);
878                 break;
879 
880         case SCO_LINK:
881         case ESCO_LINK:
882                 sco_disconn_cfm(conn, reason);
883                 break;
884 
885         /* L2CAP would be handled for BREDR chan */
886         case AMP_LINK:
887                 break;
888 
889         default:
890                 BT_ERR("unknown link type %d", conn->type);
891                 break;
892         }
893 
894         if (conn->disconn_cfm_cb)
895                 conn->disconn_cfm_cb(conn, reason);
896 }
897 
898 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
899 {
900         __u8 encrypt;
901 
902         if (conn->type != ACL_LINK && conn->type != LE_LINK)
903                 return;
904 
905         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
906                 return;
907 
908         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
909         l2cap_security_cfm(conn, status, encrypt);
910 
911         if (conn->security_cfm_cb)
912                 conn->security_cfm_cb(conn, status);
913 }
914 
915 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
916                                                                 __u8 encrypt)
917 {
918         if (conn->type != ACL_LINK && conn->type != LE_LINK)
919                 return;
920 
921         l2cap_security_cfm(conn, status, encrypt);
922 
923         if (conn->security_cfm_cb)
924                 conn->security_cfm_cb(conn, status);
925 }
926 
927 /* ----- HCI callbacks ----- */
928 struct hci_cb {
929         struct list_head list;
930 
931         char *name;
932 
933         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
934                                                                 __u8 encrypt);
935         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
936         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
937 };
938 
939 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
940 {
941         struct hci_cb *cb;
942         __u8 encrypt;
943 
944         hci_proto_auth_cfm(conn, status);
945 
946         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
947                 return;
948 
949         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
950 
951         read_lock(&hci_cb_list_lock);
952         list_for_each_entry(cb, &hci_cb_list, list) {
953                 if (cb->security_cfm)
954                         cb->security_cfm(conn, status, encrypt);
955         }
956         read_unlock(&hci_cb_list_lock);
957 }
958 
959 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
960                                                                 __u8 encrypt)
961 {
962         struct hci_cb *cb;
963 
964         if (conn->sec_level == BT_SECURITY_SDP)
965                 conn->sec_level = BT_SECURITY_LOW;
966 
967         if (conn->pending_sec_level > conn->sec_level)
968                 conn->sec_level = conn->pending_sec_level;
969 
970         hci_proto_encrypt_cfm(conn, status, encrypt);
971 
972         read_lock(&hci_cb_list_lock);
973         list_for_each_entry(cb, &hci_cb_list, list) {
974                 if (cb->security_cfm)
975                         cb->security_cfm(conn, status, encrypt);
976         }
977         read_unlock(&hci_cb_list_lock);
978 }
979 
980 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
981 {
982         struct hci_cb *cb;
983 
984         read_lock(&hci_cb_list_lock);
985         list_for_each_entry(cb, &hci_cb_list, list) {
986                 if (cb->key_change_cfm)
987                         cb->key_change_cfm(conn, status);
988         }
989         read_unlock(&hci_cb_list_lock);
990 }
991 
992 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
993                                                                 __u8 role)
994 {
995         struct hci_cb *cb;
996 
997         read_lock(&hci_cb_list_lock);
998         list_for_each_entry(cb, &hci_cb_list, list) {
999                 if (cb->role_switch_cfm)
1000                         cb->role_switch_cfm(conn, status, role);
1001         }
1002         read_unlock(&hci_cb_list_lock);
1003 }
1004 
1005 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1006 {
1007         size_t parsed = 0;
1008 
1009         if (data_len < 2)
1010                 return false;
1011 
1012         while (parsed < data_len - 1) {
1013                 u8 field_len = data[0];
1014 
1015                 if (field_len == 0)
1016                         break;
1017 
1018                 parsed += field_len + 1;
1019 
1020                 if (parsed > data_len)
1021                         break;
1022 
1023                 if (data[1] == type)
1024                         return true;
1025 
1026                 data += field_len + 1;
1027         }
1028 
1029         return false;
1030 }
1031 
1032 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1033 {
1034         size_t parsed = 0;
1035 
1036         while (parsed < eir_len) {
1037                 u8 field_len = eir[0];
1038 
1039                 if (field_len == 0)
1040                         return parsed;
1041 
1042                 parsed += field_len + 1;
1043                 eir += field_len + 1;
1044         }
1045 
1046         return eir_len;
1047 }
1048 
1049 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1050                                   u8 data_len)
1051 {
1052         eir[eir_len++] = sizeof(type) + data_len;
1053         eir[eir_len++] = type;
1054         memcpy(&eir[eir_len], data, data_len);
1055         eir_len += data_len;
1056 
1057         return eir_len;
1058 }
1059 
1060 int hci_register_cb(struct hci_cb *hcb);
1061 int hci_unregister_cb(struct hci_cb *hcb);
1062 
1063 struct hci_request {
1064         struct hci_dev          *hdev;
1065         struct sk_buff_head     cmd_q;
1066 
1067         /* If something goes wrong when building the HCI request, the error
1068          * value is stored in this field.
1069          */
1070         int                     err;
1071 };
1072 
1073 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1074 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1075 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1076                  const void *param);
1077 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1078                     const void *param, u8 event);
1079 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1080 
1081 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1082                                const void *param, u32 timeout);
1083 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1084                                   const void *param, u8 event, u32 timeout);
1085 
1086 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1087                  const void *param);
1088 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1089 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1090 
1091 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1092 
1093 /* ----- HCI Sockets ----- */
1094 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1095 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1096 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1097 
1098 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1099 
1100 /* Management interface */
1101 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1102 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1103                                          BIT(BDADDR_LE_RANDOM))
1104 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1105                                          BIT(BDADDR_LE_PUBLIC) | \
1106                                          BIT(BDADDR_LE_RANDOM))
1107 
1108 /* These LE scan and inquiry parameters were chosen according to LE General
1109  * Discovery Procedure specification.
1110  */
1111 #define DISCOV_LE_SCAN_WIN              0x12
1112 #define DISCOV_LE_SCAN_INT              0x12
1113 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1114 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1115 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1116 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1117 
1118 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1119 int mgmt_index_added(struct hci_dev *hdev);
1120 int mgmt_index_removed(struct hci_dev *hdev);
1121 int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1122 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1123 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1124 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1125 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1126 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1127                       bool persistent);
1128 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1129                           u8 addr_type, u32 flags, u8 *name, u8 name_len,
1130                           u8 *dev_class);
1131 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1132                              u8 link_type, u8 addr_type, u8 reason);
1133 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1134                            u8 link_type, u8 addr_type, u8 status);
1135 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1136                         u8 addr_type, u8 status);
1137 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1138 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1139                                  u8 status);
1140 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1141                                      u8 status);
1142 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1143                               u8 link_type, u8 addr_type, __le32 value,
1144                               u8 confirm_hint);
1145 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1146                                      u8 link_type, u8 addr_type, u8 status);
1147 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1148                                          u8 link_type, u8 addr_type, u8 status);
1149 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1150                               u8 link_type, u8 addr_type);
1151 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1152                                      u8 link_type, u8 addr_type, u8 status);
1153 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1154                                          u8 link_type, u8 addr_type, u8 status);
1155 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1156                              u8 link_type, u8 addr_type, u32 passkey,
1157                              u8 entered);
1158 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1159                      u8 addr_type, u8 status);
1160 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1161 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1162 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1163                                    u8 status);
1164 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1165 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1166                                             u8 *randomizer, u8 status);
1167 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1168 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1169                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1170                       u8 ssp, u8 *eir, u16 eir_len);
1171 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1172                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1173 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1174 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1175 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1176 bool mgmt_valid_hdev(struct hci_dev *hdev);
1177 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1178 
1179 /* HCI info for socket */
1180 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1181 
1182 struct hci_pinfo {
1183         struct bt_sock    bt;
1184         struct hci_dev    *hdev;
1185         struct hci_filter filter;
1186         __u32             cmsg_mask;
1187         unsigned short   channel;
1188 };
1189 
1190 /* HCI security filter */
1191 #define HCI_SFLT_MAX_OGF  5
1192 
1193 struct hci_sec_filter {
1194         __u32 type_mask;
1195         __u32 event_mask[2];
1196         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1197 };
1198 
1199 /* ----- HCI requests ----- */
1200 #define HCI_REQ_DONE      0
1201 #define HCI_REQ_PEND      1
1202 #define HCI_REQ_CANCELED  2
1203 
1204 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1205 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1206 
1207 void hci_update_ad(struct hci_request *req);
1208 
1209 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1210                                         u16 latency, u16 to_multiplier);
1211 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1212                                                         __u8 ltk[16]);
1213 
1214 u8 bdaddr_to_le(u8 bdaddr_type);
1215 
1216 #endif /* __HCI_CORE_H */
1217 

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