2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4 Copyright (C) 2011 ProFUSION Embedded Systems
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
26 /* Bluetooth HCI core. */
28 #include <linux/export.h>
29 #include <linux/idr.h>
30 #include <linux/rfkill.h>
31 #include <linux/debugfs.h>
32 #include <linux/crypto.h>
33 #include <asm/unaligned.h>
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37 #include <net/bluetooth/l2cap.h>
38 #include <net/bluetooth/mgmt.h>
42 static void hci_rx_work(struct work_struct
*work
);
43 static void hci_cmd_work(struct work_struct
*work
);
44 static void hci_tx_work(struct work_struct
*work
);
47 LIST_HEAD(hci_dev_list
);
48 DEFINE_RWLOCK(hci_dev_list_lock
);
50 /* HCI callback list */
51 LIST_HEAD(hci_cb_list
);
52 DEFINE_RWLOCK(hci_cb_list_lock
);
54 /* HCI ID Numbering */
55 static DEFINE_IDA(hci_index_ida
);
57 /* ---- HCI notifications ---- */
59 static void hci_notify(struct hci_dev
*hdev
, int event
)
61 hci_sock_dev_event(hdev
, event
);
64 /* ---- HCI debugfs entries ---- */
66 static ssize_t
dut_mode_read(struct file
*file
, char __user
*user_buf
,
67 size_t count
, loff_t
*ppos
)
69 struct hci_dev
*hdev
= file
->private_data
;
72 buf
[0] = test_bit(HCI_DUT_MODE
, &hdev
->dbg_flags
) ? 'Y': 'N';
75 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
78 static ssize_t
dut_mode_write(struct file
*file
, const char __user
*user_buf
,
79 size_t count
, loff_t
*ppos
)
81 struct hci_dev
*hdev
= file
->private_data
;
84 size_t buf_size
= min(count
, (sizeof(buf
)-1));
88 if (!test_bit(HCI_UP
, &hdev
->flags
))
91 if (copy_from_user(buf
, user_buf
, buf_size
))
95 if (strtobool(buf
, &enable
))
98 if (enable
== test_bit(HCI_DUT_MODE
, &hdev
->dbg_flags
))
103 skb
= __hci_cmd_sync(hdev
, HCI_OP_ENABLE_DUT_MODE
, 0, NULL
,
106 skb
= __hci_cmd_sync(hdev
, HCI_OP_RESET
, 0, NULL
,
108 hci_req_unlock(hdev
);
113 err
= -bt_to_errno(skb
->data
[0]);
119 change_bit(HCI_DUT_MODE
, &hdev
->dbg_flags
);
124 static const struct file_operations dut_mode_fops
= {
126 .read
= dut_mode_read
,
127 .write
= dut_mode_write
,
128 .llseek
= default_llseek
,
131 static int features_show(struct seq_file
*f
, void *ptr
)
133 struct hci_dev
*hdev
= f
->private;
137 for (p
= 0; p
< HCI_MAX_PAGES
&& p
<= hdev
->max_page
; p
++) {
138 seq_printf(f
, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
139 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p
,
140 hdev
->features
[p
][0], hdev
->features
[p
][1],
141 hdev
->features
[p
][2], hdev
->features
[p
][3],
142 hdev
->features
[p
][4], hdev
->features
[p
][5],
143 hdev
->features
[p
][6], hdev
->features
[p
][7]);
145 if (lmp_le_capable(hdev
))
146 seq_printf(f
, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
147 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
148 hdev
->le_features
[0], hdev
->le_features
[1],
149 hdev
->le_features
[2], hdev
->le_features
[3],
150 hdev
->le_features
[4], hdev
->le_features
[5],
151 hdev
->le_features
[6], hdev
->le_features
[7]);
152 hci_dev_unlock(hdev
);
157 static int features_open(struct inode
*inode
, struct file
*file
)
159 return single_open(file
, features_show
, inode
->i_private
);
162 static const struct file_operations features_fops
= {
163 .open
= features_open
,
166 .release
= single_release
,
169 static int blacklist_show(struct seq_file
*f
, void *p
)
171 struct hci_dev
*hdev
= f
->private;
172 struct bdaddr_list
*b
;
175 list_for_each_entry(b
, &hdev
->blacklist
, list
)
176 seq_printf(f
, "%pMR (type %u)\n", &b
->bdaddr
, b
->bdaddr_type
);
177 hci_dev_unlock(hdev
);
182 static int blacklist_open(struct inode
*inode
, struct file
*file
)
184 return single_open(file
, blacklist_show
, inode
->i_private
);
187 static const struct file_operations blacklist_fops
= {
188 .open
= blacklist_open
,
191 .release
= single_release
,
194 static int uuids_show(struct seq_file
*f
, void *p
)
196 struct hci_dev
*hdev
= f
->private;
197 struct bt_uuid
*uuid
;
200 list_for_each_entry(uuid
, &hdev
->uuids
, list
) {
203 /* The Bluetooth UUID values are stored in big endian,
204 * but with reversed byte order. So convert them into
205 * the right order for the %pUb modifier.
207 for (i
= 0; i
< 16; i
++)
208 val
[i
] = uuid
->uuid
[15 - i
];
210 seq_printf(f
, "%pUb\n", val
);
212 hci_dev_unlock(hdev
);
217 static int uuids_open(struct inode
*inode
, struct file
*file
)
219 return single_open(file
, uuids_show
, inode
->i_private
);
222 static const struct file_operations uuids_fops
= {
226 .release
= single_release
,
229 static int inquiry_cache_show(struct seq_file
*f
, void *p
)
231 struct hci_dev
*hdev
= f
->private;
232 struct discovery_state
*cache
= &hdev
->discovery
;
233 struct inquiry_entry
*e
;
237 list_for_each_entry(e
, &cache
->all
, all
) {
238 struct inquiry_data
*data
= &e
->data
;
239 seq_printf(f
, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
241 data
->pscan_rep_mode
, data
->pscan_period_mode
,
242 data
->pscan_mode
, data
->dev_class
[2],
243 data
->dev_class
[1], data
->dev_class
[0],
244 __le16_to_cpu(data
->clock_offset
),
245 data
->rssi
, data
->ssp_mode
, e
->timestamp
);
248 hci_dev_unlock(hdev
);
253 static int inquiry_cache_open(struct inode
*inode
, struct file
*file
)
255 return single_open(file
, inquiry_cache_show
, inode
->i_private
);
258 static const struct file_operations inquiry_cache_fops
= {
259 .open
= inquiry_cache_open
,
262 .release
= single_release
,
265 static int link_keys_show(struct seq_file
*f
, void *ptr
)
267 struct hci_dev
*hdev
= f
->private;
268 struct list_head
*p
, *n
;
271 list_for_each_safe(p
, n
, &hdev
->link_keys
) {
272 struct link_key
*key
= list_entry(p
, struct link_key
, list
);
273 seq_printf(f
, "%pMR %u %*phN %u\n", &key
->bdaddr
, key
->type
,
274 HCI_LINK_KEY_SIZE
, key
->val
, key
->pin_len
);
276 hci_dev_unlock(hdev
);
281 static int link_keys_open(struct inode
*inode
, struct file
*file
)
283 return single_open(file
, link_keys_show
, inode
->i_private
);
286 static const struct file_operations link_keys_fops
= {
287 .open
= link_keys_open
,
290 .release
= single_release
,
293 static int dev_class_show(struct seq_file
*f
, void *ptr
)
295 struct hci_dev
*hdev
= f
->private;
298 seq_printf(f
, "0x%.2x%.2x%.2x\n", hdev
->dev_class
[2],
299 hdev
->dev_class
[1], hdev
->dev_class
[0]);
300 hci_dev_unlock(hdev
);
305 static int dev_class_open(struct inode
*inode
, struct file
*file
)
307 return single_open(file
, dev_class_show
, inode
->i_private
);
310 static const struct file_operations dev_class_fops
= {
311 .open
= dev_class_open
,
314 .release
= single_release
,
317 static int voice_setting_get(void *data
, u64
*val
)
319 struct hci_dev
*hdev
= data
;
322 *val
= hdev
->voice_setting
;
323 hci_dev_unlock(hdev
);
328 DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops
, voice_setting_get
,
329 NULL
, "0x%4.4llx\n");
331 static int auto_accept_delay_set(void *data
, u64 val
)
333 struct hci_dev
*hdev
= data
;
336 hdev
->auto_accept_delay
= val
;
337 hci_dev_unlock(hdev
);
342 static int auto_accept_delay_get(void *data
, u64
*val
)
344 struct hci_dev
*hdev
= data
;
347 *val
= hdev
->auto_accept_delay
;
348 hci_dev_unlock(hdev
);
353 DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops
, auto_accept_delay_get
,
354 auto_accept_delay_set
, "%llu\n");
356 static ssize_t
force_sc_support_read(struct file
*file
, char __user
*user_buf
,
357 size_t count
, loff_t
*ppos
)
359 struct hci_dev
*hdev
= file
->private_data
;
362 buf
[0] = test_bit(HCI_FORCE_SC
, &hdev
->dbg_flags
) ? 'Y': 'N';
365 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
368 static ssize_t
force_sc_support_write(struct file
*file
,
369 const char __user
*user_buf
,
370 size_t count
, loff_t
*ppos
)
372 struct hci_dev
*hdev
= file
->private_data
;
374 size_t buf_size
= min(count
, (sizeof(buf
)-1));
377 if (test_bit(HCI_UP
, &hdev
->flags
))
380 if (copy_from_user(buf
, user_buf
, buf_size
))
383 buf
[buf_size
] = '\0';
384 if (strtobool(buf
, &enable
))
387 if (enable
== test_bit(HCI_FORCE_SC
, &hdev
->dbg_flags
))
390 change_bit(HCI_FORCE_SC
, &hdev
->dbg_flags
);
395 static const struct file_operations force_sc_support_fops
= {
397 .read
= force_sc_support_read
,
398 .write
= force_sc_support_write
,
399 .llseek
= default_llseek
,
402 static ssize_t
sc_only_mode_read(struct file
*file
, char __user
*user_buf
,
403 size_t count
, loff_t
*ppos
)
405 struct hci_dev
*hdev
= file
->private_data
;
408 buf
[0] = test_bit(HCI_SC_ONLY
, &hdev
->dev_flags
) ? 'Y': 'N';
411 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
414 static const struct file_operations sc_only_mode_fops
= {
416 .read
= sc_only_mode_read
,
417 .llseek
= default_llseek
,
420 static int idle_timeout_set(void *data
, u64 val
)
422 struct hci_dev
*hdev
= data
;
424 if (val
!= 0 && (val
< 500 || val
> 3600000))
428 hdev
->idle_timeout
= val
;
429 hci_dev_unlock(hdev
);
434 static int idle_timeout_get(void *data
, u64
*val
)
436 struct hci_dev
*hdev
= data
;
439 *val
= hdev
->idle_timeout
;
440 hci_dev_unlock(hdev
);
445 DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops
, idle_timeout_get
,
446 idle_timeout_set
, "%llu\n");
448 static int rpa_timeout_set(void *data
, u64 val
)
450 struct hci_dev
*hdev
= data
;
452 /* Require the RPA timeout to be at least 30 seconds and at most
455 if (val
< 30 || val
> (60 * 60 * 24))
459 hdev
->rpa_timeout
= val
;
460 hci_dev_unlock(hdev
);
465 static int rpa_timeout_get(void *data
, u64
*val
)
467 struct hci_dev
*hdev
= data
;
470 *val
= hdev
->rpa_timeout
;
471 hci_dev_unlock(hdev
);
476 DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops
, rpa_timeout_get
,
477 rpa_timeout_set
, "%llu\n");
479 static int sniff_min_interval_set(void *data
, u64 val
)
481 struct hci_dev
*hdev
= data
;
483 if (val
== 0 || val
% 2 || val
> hdev
->sniff_max_interval
)
487 hdev
->sniff_min_interval
= val
;
488 hci_dev_unlock(hdev
);
493 static int sniff_min_interval_get(void *data
, u64
*val
)
495 struct hci_dev
*hdev
= data
;
498 *val
= hdev
->sniff_min_interval
;
499 hci_dev_unlock(hdev
);
504 DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops
, sniff_min_interval_get
,
505 sniff_min_interval_set
, "%llu\n");
507 static int sniff_max_interval_set(void *data
, u64 val
)
509 struct hci_dev
*hdev
= data
;
511 if (val
== 0 || val
% 2 || val
< hdev
->sniff_min_interval
)
515 hdev
->sniff_max_interval
= val
;
516 hci_dev_unlock(hdev
);
521 static int sniff_max_interval_get(void *data
, u64
*val
)
523 struct hci_dev
*hdev
= data
;
526 *val
= hdev
->sniff_max_interval
;
527 hci_dev_unlock(hdev
);
532 DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops
, sniff_max_interval_get
,
533 sniff_max_interval_set
, "%llu\n");
535 static int conn_info_min_age_set(void *data
, u64 val
)
537 struct hci_dev
*hdev
= data
;
539 if (val
== 0 || val
> hdev
->conn_info_max_age
)
543 hdev
->conn_info_min_age
= val
;
544 hci_dev_unlock(hdev
);
549 static int conn_info_min_age_get(void *data
, u64
*val
)
551 struct hci_dev
*hdev
= data
;
554 *val
= hdev
->conn_info_min_age
;
555 hci_dev_unlock(hdev
);
560 DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops
, conn_info_min_age_get
,
561 conn_info_min_age_set
, "%llu\n");
563 static int conn_info_max_age_set(void *data
, u64 val
)
565 struct hci_dev
*hdev
= data
;
567 if (val
== 0 || val
< hdev
->conn_info_min_age
)
571 hdev
->conn_info_max_age
= val
;
572 hci_dev_unlock(hdev
);
577 static int conn_info_max_age_get(void *data
, u64
*val
)
579 struct hci_dev
*hdev
= data
;
582 *val
= hdev
->conn_info_max_age
;
583 hci_dev_unlock(hdev
);
588 DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops
, conn_info_max_age_get
,
589 conn_info_max_age_set
, "%llu\n");
591 static int identity_show(struct seq_file
*f
, void *p
)
593 struct hci_dev
*hdev
= f
->private;
599 hci_copy_identity_address(hdev
, &addr
, &addr_type
);
601 seq_printf(f
, "%pMR (type %u) %*phN %pMR\n", &addr
, addr_type
,
602 16, hdev
->irk
, &hdev
->rpa
);
604 hci_dev_unlock(hdev
);
609 static int identity_open(struct inode
*inode
, struct file
*file
)
611 return single_open(file
, identity_show
, inode
->i_private
);
614 static const struct file_operations identity_fops
= {
615 .open
= identity_open
,
618 .release
= single_release
,
621 static int random_address_show(struct seq_file
*f
, void *p
)
623 struct hci_dev
*hdev
= f
->private;
626 seq_printf(f
, "%pMR\n", &hdev
->random_addr
);
627 hci_dev_unlock(hdev
);
632 static int random_address_open(struct inode
*inode
, struct file
*file
)
634 return single_open(file
, random_address_show
, inode
->i_private
);
637 static const struct file_operations random_address_fops
= {
638 .open
= random_address_open
,
641 .release
= single_release
,
644 static int static_address_show(struct seq_file
*f
, void *p
)
646 struct hci_dev
*hdev
= f
->private;
649 seq_printf(f
, "%pMR\n", &hdev
->static_addr
);
650 hci_dev_unlock(hdev
);
655 static int static_address_open(struct inode
*inode
, struct file
*file
)
657 return single_open(file
, static_address_show
, inode
->i_private
);
660 static const struct file_operations static_address_fops
= {
661 .open
= static_address_open
,
664 .release
= single_release
,
667 static ssize_t
force_static_address_read(struct file
*file
,
668 char __user
*user_buf
,
669 size_t count
, loff_t
*ppos
)
671 struct hci_dev
*hdev
= file
->private_data
;
674 buf
[0] = test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dbg_flags
) ? 'Y': 'N';
677 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
680 static ssize_t
force_static_address_write(struct file
*file
,
681 const char __user
*user_buf
,
682 size_t count
, loff_t
*ppos
)
684 struct hci_dev
*hdev
= file
->private_data
;
686 size_t buf_size
= min(count
, (sizeof(buf
)-1));
689 if (test_bit(HCI_UP
, &hdev
->flags
))
692 if (copy_from_user(buf
, user_buf
, buf_size
))
695 buf
[buf_size
] = '\0';
696 if (strtobool(buf
, &enable
))
699 if (enable
== test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dbg_flags
))
702 change_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dbg_flags
);
707 static const struct file_operations force_static_address_fops
= {
709 .read
= force_static_address_read
,
710 .write
= force_static_address_write
,
711 .llseek
= default_llseek
,
714 static int white_list_show(struct seq_file
*f
, void *ptr
)
716 struct hci_dev
*hdev
= f
->private;
717 struct bdaddr_list
*b
;
720 list_for_each_entry(b
, &hdev
->le_white_list
, list
)
721 seq_printf(f
, "%pMR (type %u)\n", &b
->bdaddr
, b
->bdaddr_type
);
722 hci_dev_unlock(hdev
);
727 static int white_list_open(struct inode
*inode
, struct file
*file
)
729 return single_open(file
, white_list_show
, inode
->i_private
);
732 static const struct file_operations white_list_fops
= {
733 .open
= white_list_open
,
736 .release
= single_release
,
739 static int identity_resolving_keys_show(struct seq_file
*f
, void *ptr
)
741 struct hci_dev
*hdev
= f
->private;
742 struct list_head
*p
, *n
;
745 list_for_each_safe(p
, n
, &hdev
->identity_resolving_keys
) {
746 struct smp_irk
*irk
= list_entry(p
, struct smp_irk
, list
);
747 seq_printf(f
, "%pMR (type %u) %*phN %pMR\n",
748 &irk
->bdaddr
, irk
->addr_type
,
749 16, irk
->val
, &irk
->rpa
);
751 hci_dev_unlock(hdev
);
756 static int identity_resolving_keys_open(struct inode
*inode
, struct file
*file
)
758 return single_open(file
, identity_resolving_keys_show
,
762 static const struct file_operations identity_resolving_keys_fops
= {
763 .open
= identity_resolving_keys_open
,
766 .release
= single_release
,
769 static int long_term_keys_show(struct seq_file
*f
, void *ptr
)
771 struct hci_dev
*hdev
= f
->private;
772 struct list_head
*p
, *n
;
775 list_for_each_safe(p
, n
, &hdev
->long_term_keys
) {
776 struct smp_ltk
*ltk
= list_entry(p
, struct smp_ltk
, list
);
777 seq_printf(f
, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
778 <k
->bdaddr
, ltk
->bdaddr_type
, ltk
->authenticated
,
779 ltk
->type
, ltk
->enc_size
, __le16_to_cpu(ltk
->ediv
),
780 __le64_to_cpu(ltk
->rand
), 16, ltk
->val
);
782 hci_dev_unlock(hdev
);
787 static int long_term_keys_open(struct inode
*inode
, struct file
*file
)
789 return single_open(file
, long_term_keys_show
, inode
->i_private
);
792 static const struct file_operations long_term_keys_fops
= {
793 .open
= long_term_keys_open
,
796 .release
= single_release
,
799 static int conn_min_interval_set(void *data
, u64 val
)
801 struct hci_dev
*hdev
= data
;
803 if (val
< 0x0006 || val
> 0x0c80 || val
> hdev
->le_conn_max_interval
)
807 hdev
->le_conn_min_interval
= val
;
808 hci_dev_unlock(hdev
);
813 static int conn_min_interval_get(void *data
, u64
*val
)
815 struct hci_dev
*hdev
= data
;
818 *val
= hdev
->le_conn_min_interval
;
819 hci_dev_unlock(hdev
);
824 DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops
, conn_min_interval_get
,
825 conn_min_interval_set
, "%llu\n");
827 static int conn_max_interval_set(void *data
, u64 val
)
829 struct hci_dev
*hdev
= data
;
831 if (val
< 0x0006 || val
> 0x0c80 || val
< hdev
->le_conn_min_interval
)
835 hdev
->le_conn_max_interval
= val
;
836 hci_dev_unlock(hdev
);
841 static int conn_max_interval_get(void *data
, u64
*val
)
843 struct hci_dev
*hdev
= data
;
846 *val
= hdev
->le_conn_max_interval
;
847 hci_dev_unlock(hdev
);
852 DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops
, conn_max_interval_get
,
853 conn_max_interval_set
, "%llu\n");
855 static int conn_latency_set(void *data
, u64 val
)
857 struct hci_dev
*hdev
= data
;
863 hdev
->le_conn_latency
= val
;
864 hci_dev_unlock(hdev
);
869 static int conn_latency_get(void *data
, u64
*val
)
871 struct hci_dev
*hdev
= data
;
874 *val
= hdev
->le_conn_latency
;
875 hci_dev_unlock(hdev
);
880 DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops
, conn_latency_get
,
881 conn_latency_set
, "%llu\n");
883 static int supervision_timeout_set(void *data
, u64 val
)
885 struct hci_dev
*hdev
= data
;
887 if (val
< 0x000a || val
> 0x0c80)
891 hdev
->le_supv_timeout
= val
;
892 hci_dev_unlock(hdev
);
897 static int supervision_timeout_get(void *data
, u64
*val
)
899 struct hci_dev
*hdev
= data
;
902 *val
= hdev
->le_supv_timeout
;
903 hci_dev_unlock(hdev
);
908 DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops
, supervision_timeout_get
,
909 supervision_timeout_set
, "%llu\n");
911 static int adv_channel_map_set(void *data
, u64 val
)
913 struct hci_dev
*hdev
= data
;
915 if (val
< 0x01 || val
> 0x07)
919 hdev
->le_adv_channel_map
= val
;
920 hci_dev_unlock(hdev
);
925 static int adv_channel_map_get(void *data
, u64
*val
)
927 struct hci_dev
*hdev
= data
;
930 *val
= hdev
->le_adv_channel_map
;
931 hci_dev_unlock(hdev
);
936 DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops
, adv_channel_map_get
,
937 adv_channel_map_set
, "%llu\n");
939 static int device_list_show(struct seq_file
*f
, void *ptr
)
941 struct hci_dev
*hdev
= f
->private;
942 struct hci_conn_params
*p
;
945 list_for_each_entry(p
, &hdev
->le_conn_params
, list
) {
946 seq_printf(f
, "%pMR %u %u\n", &p
->addr
, p
->addr_type
,
949 hci_dev_unlock(hdev
);
954 static int device_list_open(struct inode
*inode
, struct file
*file
)
956 return single_open(file
, device_list_show
, inode
->i_private
);
959 static const struct file_operations device_list_fops
= {
960 .open
= device_list_open
,
963 .release
= single_release
,
966 /* ---- HCI requests ---- */
968 static void hci_req_sync_complete(struct hci_dev
*hdev
, u8 result
)
970 BT_DBG("%s result 0x%2.2x", hdev
->name
, result
);
972 if (hdev
->req_status
== HCI_REQ_PEND
) {
973 hdev
->req_result
= result
;
974 hdev
->req_status
= HCI_REQ_DONE
;
975 wake_up_interruptible(&hdev
->req_wait_q
);
979 static void hci_req_cancel(struct hci_dev
*hdev
, int err
)
981 BT_DBG("%s err 0x%2.2x", hdev
->name
, err
);
983 if (hdev
->req_status
== HCI_REQ_PEND
) {
984 hdev
->req_result
= err
;
985 hdev
->req_status
= HCI_REQ_CANCELED
;
986 wake_up_interruptible(&hdev
->req_wait_q
);
990 static struct sk_buff
*hci_get_cmd_complete(struct hci_dev
*hdev
, u16 opcode
,
993 struct hci_ev_cmd_complete
*ev
;
994 struct hci_event_hdr
*hdr
;
999 skb
= hdev
->recv_evt
;
1000 hdev
->recv_evt
= NULL
;
1002 hci_dev_unlock(hdev
);
1005 return ERR_PTR(-ENODATA
);
1007 if (skb
->len
< sizeof(*hdr
)) {
1008 BT_ERR("Too short HCI event");
1012 hdr
= (void *) skb
->data
;
1013 skb_pull(skb
, HCI_EVENT_HDR_SIZE
);
1016 if (hdr
->evt
!= event
)
1021 if (hdr
->evt
!= HCI_EV_CMD_COMPLETE
) {
1022 BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr
->evt
);
1026 if (skb
->len
< sizeof(*ev
)) {
1027 BT_ERR("Too short cmd_complete event");
1031 ev
= (void *) skb
->data
;
1032 skb_pull(skb
, sizeof(*ev
));
1034 if (opcode
== __le16_to_cpu(ev
->opcode
))
1037 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode
,
1038 __le16_to_cpu(ev
->opcode
));
1042 return ERR_PTR(-ENODATA
);
1045 struct sk_buff
*__hci_cmd_sync_ev(struct hci_dev
*hdev
, u16 opcode
, u32 plen
,
1046 const void *param
, u8 event
, u32 timeout
)
1048 DECLARE_WAITQUEUE(wait
, current
);
1049 struct hci_request req
;
1052 BT_DBG("%s", hdev
->name
);
1054 hci_req_init(&req
, hdev
);
1056 hci_req_add_ev(&req
, opcode
, plen
, param
, event
);
1058 hdev
->req_status
= HCI_REQ_PEND
;
1060 err
= hci_req_run(&req
, hci_req_sync_complete
);
1062 return ERR_PTR(err
);
1064 add_wait_queue(&hdev
->req_wait_q
, &wait
);
1065 set_current_state(TASK_INTERRUPTIBLE
);
1067 schedule_timeout(timeout
);
1069 remove_wait_queue(&hdev
->req_wait_q
, &wait
);
1071 if (signal_pending(current
))
1072 return ERR_PTR(-EINTR
);
1074 switch (hdev
->req_status
) {
1076 err
= -bt_to_errno(hdev
->req_result
);
1079 case HCI_REQ_CANCELED
:
1080 err
= -hdev
->req_result
;
1088 hdev
->req_status
= hdev
->req_result
= 0;
1090 BT_DBG("%s end: err %d", hdev
->name
, err
);
1093 return ERR_PTR(err
);
1095 return hci_get_cmd_complete(hdev
, opcode
, event
);
1097 EXPORT_SYMBOL(__hci_cmd_sync_ev
);
1099 struct sk_buff
*__hci_cmd_sync(struct hci_dev
*hdev
, u16 opcode
, u32 plen
,
1100 const void *param
, u32 timeout
)
1102 return __hci_cmd_sync_ev(hdev
, opcode
, plen
, param
, 0, timeout
);
1104 EXPORT_SYMBOL(__hci_cmd_sync
);
1106 /* Execute request and wait for completion. */
1107 static int __hci_req_sync(struct hci_dev
*hdev
,
1108 void (*func
)(struct hci_request
*req
,
1110 unsigned long opt
, __u32 timeout
)
1112 struct hci_request req
;
1113 DECLARE_WAITQUEUE(wait
, current
);
1116 BT_DBG("%s start", hdev
->name
);
1118 hci_req_init(&req
, hdev
);
1120 hdev
->req_status
= HCI_REQ_PEND
;
1124 err
= hci_req_run(&req
, hci_req_sync_complete
);
1126 hdev
->req_status
= 0;
1128 /* ENODATA means the HCI request command queue is empty.
1129 * This can happen when a request with conditionals doesn't
1130 * trigger any commands to be sent. This is normal behavior
1131 * and should not trigger an error return.
1133 if (err
== -ENODATA
)
1139 add_wait_queue(&hdev
->req_wait_q
, &wait
);
1140 set_current_state(TASK_INTERRUPTIBLE
);
1142 schedule_timeout(timeout
);
1144 remove_wait_queue(&hdev
->req_wait_q
, &wait
);
1146 if (signal_pending(current
))
1149 switch (hdev
->req_status
) {
1151 err
= -bt_to_errno(hdev
->req_result
);
1154 case HCI_REQ_CANCELED
:
1155 err
= -hdev
->req_result
;
1163 hdev
->req_status
= hdev
->req_result
= 0;
1165 BT_DBG("%s end: err %d", hdev
->name
, err
);
1170 static int hci_req_sync(struct hci_dev
*hdev
,
1171 void (*req
)(struct hci_request
*req
,
1173 unsigned long opt
, __u32 timeout
)
1177 if (!test_bit(HCI_UP
, &hdev
->flags
))
1180 /* Serialize all requests */
1182 ret
= __hci_req_sync(hdev
, req
, opt
, timeout
);
1183 hci_req_unlock(hdev
);
1188 static void hci_reset_req(struct hci_request
*req
, unsigned long opt
)
1190 BT_DBG("%s %ld", req
->hdev
->name
, opt
);
1193 set_bit(HCI_RESET
, &req
->hdev
->flags
);
1194 hci_req_add(req
, HCI_OP_RESET
, 0, NULL
);
1197 static void bredr_init(struct hci_request
*req
)
1199 req
->hdev
->flow_ctl_mode
= HCI_FLOW_CTL_MODE_PACKET_BASED
;
1201 /* Read Local Supported Features */
1202 hci_req_add(req
, HCI_OP_READ_LOCAL_FEATURES
, 0, NULL
);
1204 /* Read Local Version */
1205 hci_req_add(req
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
);
1207 /* Read BD Address */
1208 hci_req_add(req
, HCI_OP_READ_BD_ADDR
, 0, NULL
);
1211 static void amp_init(struct hci_request
*req
)
1213 req
->hdev
->flow_ctl_mode
= HCI_FLOW_CTL_MODE_BLOCK_BASED
;
1215 /* Read Local Version */
1216 hci_req_add(req
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
);
1218 /* Read Local Supported Commands */
1219 hci_req_add(req
, HCI_OP_READ_LOCAL_COMMANDS
, 0, NULL
);
1221 /* Read Local Supported Features */
1222 hci_req_add(req
, HCI_OP_READ_LOCAL_FEATURES
, 0, NULL
);
1224 /* Read Local AMP Info */
1225 hci_req_add(req
, HCI_OP_READ_LOCAL_AMP_INFO
, 0, NULL
);
1227 /* Read Data Blk size */
1228 hci_req_add(req
, HCI_OP_READ_DATA_BLOCK_SIZE
, 0, NULL
);
1230 /* Read Flow Control Mode */
1231 hci_req_add(req
, HCI_OP_READ_FLOW_CONTROL_MODE
, 0, NULL
);
1233 /* Read Location Data */
1234 hci_req_add(req
, HCI_OP_READ_LOCATION_DATA
, 0, NULL
);
1237 static void hci_init1_req(struct hci_request
*req
, unsigned long opt
)
1239 struct hci_dev
*hdev
= req
->hdev
;
1241 BT_DBG("%s %ld", hdev
->name
, opt
);
1244 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
))
1245 hci_reset_req(req
, 0);
1247 switch (hdev
->dev_type
) {
1257 BT_ERR("Unknown device type %d", hdev
->dev_type
);
1262 static void bredr_setup(struct hci_request
*req
)
1264 struct hci_dev
*hdev
= req
->hdev
;
1269 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
1270 hci_req_add(req
, HCI_OP_READ_BUFFER_SIZE
, 0, NULL
);
1272 /* Read Class of Device */
1273 hci_req_add(req
, HCI_OP_READ_CLASS_OF_DEV
, 0, NULL
);
1275 /* Read Local Name */
1276 hci_req_add(req
, HCI_OP_READ_LOCAL_NAME
, 0, NULL
);
1278 /* Read Voice Setting */
1279 hci_req_add(req
, HCI_OP_READ_VOICE_SETTING
, 0, NULL
);
1281 /* Read Number of Supported IAC */
1282 hci_req_add(req
, HCI_OP_READ_NUM_SUPPORTED_IAC
, 0, NULL
);
1284 /* Read Current IAC LAP */
1285 hci_req_add(req
, HCI_OP_READ_CURRENT_IAC_LAP
, 0, NULL
);
1287 /* Clear Event Filters */
1288 flt_type
= HCI_FLT_CLEAR_ALL
;
1289 hci_req_add(req
, HCI_OP_SET_EVENT_FLT
, 1, &flt_type
);
1291 /* Connection accept timeout ~20 secs */
1292 param
= cpu_to_le16(0x7d00);
1293 hci_req_add(req
, HCI_OP_WRITE_CA_TIMEOUT
, 2, ¶m
);
1295 /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2,
1296 * but it does not support page scan related HCI commands.
1298 if (hdev
->manufacturer
!= 31 && hdev
->hci_ver
> BLUETOOTH_VER_1_1
) {
1299 hci_req_add(req
, HCI_OP_READ_PAGE_SCAN_ACTIVITY
, 0, NULL
);
1300 hci_req_add(req
, HCI_OP_READ_PAGE_SCAN_TYPE
, 0, NULL
);
1304 static void le_setup(struct hci_request
*req
)
1306 struct hci_dev
*hdev
= req
->hdev
;
1308 /* Read LE Buffer Size */
1309 hci_req_add(req
, HCI_OP_LE_READ_BUFFER_SIZE
, 0, NULL
);
1311 /* Read LE Local Supported Features */
1312 hci_req_add(req
, HCI_OP_LE_READ_LOCAL_FEATURES
, 0, NULL
);
1314 /* Read LE Supported States */
1315 hci_req_add(req
, HCI_OP_LE_READ_SUPPORTED_STATES
, 0, NULL
);
1317 /* Read LE Advertising Channel TX Power */
1318 hci_req_add(req
, HCI_OP_LE_READ_ADV_TX_POWER
, 0, NULL
);
1320 /* Read LE White List Size */
1321 hci_req_add(req
, HCI_OP_LE_READ_WHITE_LIST_SIZE
, 0, NULL
);
1323 /* Clear LE White List */
1324 hci_req_add(req
, HCI_OP_LE_CLEAR_WHITE_LIST
, 0, NULL
);
1326 /* LE-only controllers have LE implicitly enabled */
1327 if (!lmp_bredr_capable(hdev
))
1328 set_bit(HCI_LE_ENABLED
, &hdev
->dev_flags
);
1331 static u8
hci_get_inquiry_mode(struct hci_dev
*hdev
)
1333 if (lmp_ext_inq_capable(hdev
))
1336 if (lmp_inq_rssi_capable(hdev
))
1339 if (hdev
->manufacturer
== 11 && hdev
->hci_rev
== 0x00 &&
1340 hdev
->lmp_subver
== 0x0757)
1343 if (hdev
->manufacturer
== 15) {
1344 if (hdev
->hci_rev
== 0x03 && hdev
->lmp_subver
== 0x6963)
1346 if (hdev
->hci_rev
== 0x09 && hdev
->lmp_subver
== 0x6963)
1348 if (hdev
->hci_rev
== 0x00 && hdev
->lmp_subver
== 0x6965)
1352 if (hdev
->manufacturer
== 31 && hdev
->hci_rev
== 0x2005 &&
1353 hdev
->lmp_subver
== 0x1805)
1359 static void hci_setup_inquiry_mode(struct hci_request
*req
)
1363 mode
= hci_get_inquiry_mode(req
->hdev
);
1365 hci_req_add(req
, HCI_OP_WRITE_INQUIRY_MODE
, 1, &mode
);
1368 static void hci_setup_event_mask(struct hci_request
*req
)
1370 struct hci_dev
*hdev
= req
->hdev
;
1372 /* The second byte is 0xff instead of 0x9f (two reserved bits
1373 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
1374 * command otherwise.
1376 u8 events
[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
1378 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
1379 * any event mask for pre 1.2 devices.
1381 if (hdev
->hci_ver
< BLUETOOTH_VER_1_2
)
1384 if (lmp_bredr_capable(hdev
)) {
1385 events
[4] |= 0x01; /* Flow Specification Complete */
1386 events
[4] |= 0x02; /* Inquiry Result with RSSI */
1387 events
[4] |= 0x04; /* Read Remote Extended Features Complete */
1388 events
[5] |= 0x08; /* Synchronous Connection Complete */
1389 events
[5] |= 0x10; /* Synchronous Connection Changed */
1391 /* Use a different default for LE-only devices */
1392 memset(events
, 0, sizeof(events
));
1393 events
[0] |= 0x10; /* Disconnection Complete */
1394 events
[0] |= 0x80; /* Encryption Change */
1395 events
[1] |= 0x08; /* Read Remote Version Information Complete */
1396 events
[1] |= 0x20; /* Command Complete */
1397 events
[1] |= 0x40; /* Command Status */
1398 events
[1] |= 0x80; /* Hardware Error */
1399 events
[2] |= 0x04; /* Number of Completed Packets */
1400 events
[3] |= 0x02; /* Data Buffer Overflow */
1401 events
[5] |= 0x80; /* Encryption Key Refresh Complete */
1404 if (lmp_inq_rssi_capable(hdev
))
1405 events
[4] |= 0x02; /* Inquiry Result with RSSI */
1407 if (lmp_sniffsubr_capable(hdev
))
1408 events
[5] |= 0x20; /* Sniff Subrating */
1410 if (lmp_pause_enc_capable(hdev
))
1411 events
[5] |= 0x80; /* Encryption Key Refresh Complete */
1413 if (lmp_ext_inq_capable(hdev
))
1414 events
[5] |= 0x40; /* Extended Inquiry Result */
1416 if (lmp_no_flush_capable(hdev
))
1417 events
[7] |= 0x01; /* Enhanced Flush Complete */
1419 if (lmp_lsto_capable(hdev
))
1420 events
[6] |= 0x80; /* Link Supervision Timeout Changed */
1422 if (lmp_ssp_capable(hdev
)) {
1423 events
[6] |= 0x01; /* IO Capability Request */
1424 events
[6] |= 0x02; /* IO Capability Response */
1425 events
[6] |= 0x04; /* User Confirmation Request */
1426 events
[6] |= 0x08; /* User Passkey Request */
1427 events
[6] |= 0x10; /* Remote OOB Data Request */
1428 events
[6] |= 0x20; /* Simple Pairing Complete */
1429 events
[7] |= 0x04; /* User Passkey Notification */
1430 events
[7] |= 0x08; /* Keypress Notification */
1431 events
[7] |= 0x10; /* Remote Host Supported
1432 * Features Notification
1436 if (lmp_le_capable(hdev
))
1437 events
[7] |= 0x20; /* LE Meta-Event */
1439 hci_req_add(req
, HCI_OP_SET_EVENT_MASK
, sizeof(events
), events
);
1442 static void hci_init2_req(struct hci_request
*req
, unsigned long opt
)
1444 struct hci_dev
*hdev
= req
->hdev
;
1446 if (lmp_bredr_capable(hdev
))
1449 clear_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
);
1451 if (lmp_le_capable(hdev
))
1454 hci_setup_event_mask(req
);
1456 /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read
1457 * local supported commands HCI command.
1459 if (hdev
->manufacturer
!= 31 && hdev
->hci_ver
> BLUETOOTH_VER_1_1
)
1460 hci_req_add(req
, HCI_OP_READ_LOCAL_COMMANDS
, 0, NULL
);
1462 if (lmp_ssp_capable(hdev
)) {
1463 /* When SSP is available, then the host features page
1464 * should also be available as well. However some
1465 * controllers list the max_page as 0 as long as SSP
1466 * has not been enabled. To achieve proper debugging
1467 * output, force the minimum max_page to 1 at least.
1469 hdev
->max_page
= 0x01;
1471 if (test_bit(HCI_SSP_ENABLED
, &hdev
->dev_flags
)) {
1473 hci_req_add(req
, HCI_OP_WRITE_SSP_MODE
,
1474 sizeof(mode
), &mode
);
1476 struct hci_cp_write_eir cp
;
1478 memset(hdev
->eir
, 0, sizeof(hdev
->eir
));
1479 memset(&cp
, 0, sizeof(cp
));
1481 hci_req_add(req
, HCI_OP_WRITE_EIR
, sizeof(cp
), &cp
);
1485 if (lmp_inq_rssi_capable(hdev
))
1486 hci_setup_inquiry_mode(req
);
1488 if (lmp_inq_tx_pwr_capable(hdev
))
1489 hci_req_add(req
, HCI_OP_READ_INQ_RSP_TX_POWER
, 0, NULL
);
1491 if (lmp_ext_feat_capable(hdev
)) {
1492 struct hci_cp_read_local_ext_features cp
;
1495 hci_req_add(req
, HCI_OP_READ_LOCAL_EXT_FEATURES
,
1499 if (test_bit(HCI_LINK_SECURITY
, &hdev
->dev_flags
)) {
1501 hci_req_add(req
, HCI_OP_WRITE_AUTH_ENABLE
, sizeof(enable
),
1506 static void hci_setup_link_policy(struct hci_request
*req
)
1508 struct hci_dev
*hdev
= req
->hdev
;
1509 struct hci_cp_write_def_link_policy cp
;
1510 u16 link_policy
= 0;
1512 if (lmp_rswitch_capable(hdev
))
1513 link_policy
|= HCI_LP_RSWITCH
;
1514 if (lmp_hold_capable(hdev
))
1515 link_policy
|= HCI_LP_HOLD
;
1516 if (lmp_sniff_capable(hdev
))
1517 link_policy
|= HCI_LP_SNIFF
;
1518 if (lmp_park_capable(hdev
))
1519 link_policy
|= HCI_LP_PARK
;
1521 cp
.policy
= cpu_to_le16(link_policy
);
1522 hci_req_add(req
, HCI_OP_WRITE_DEF_LINK_POLICY
, sizeof(cp
), &cp
);
1525 static void hci_set_le_support(struct hci_request
*req
)
1527 struct hci_dev
*hdev
= req
->hdev
;
1528 struct hci_cp_write_le_host_supported cp
;
1530 /* LE-only devices do not support explicit enablement */
1531 if (!lmp_bredr_capable(hdev
))
1534 memset(&cp
, 0, sizeof(cp
));
1536 if (test_bit(HCI_LE_ENABLED
, &hdev
->dev_flags
)) {
1538 cp
.simul
= lmp_le_br_capable(hdev
);
1541 if (cp
.le
!= lmp_host_le_capable(hdev
))
1542 hci_req_add(req
, HCI_OP_WRITE_LE_HOST_SUPPORTED
, sizeof(cp
),
1546 static void hci_set_event_mask_page_2(struct hci_request
*req
)
1548 struct hci_dev
*hdev
= req
->hdev
;
1549 u8 events
[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
1551 /* If Connectionless Slave Broadcast master role is supported
1552 * enable all necessary events for it.
1554 if (lmp_csb_master_capable(hdev
)) {
1555 events
[1] |= 0x40; /* Triggered Clock Capture */
1556 events
[1] |= 0x80; /* Synchronization Train Complete */
1557 events
[2] |= 0x10; /* Slave Page Response Timeout */
1558 events
[2] |= 0x20; /* CSB Channel Map Change */
1561 /* If Connectionless Slave Broadcast slave role is supported
1562 * enable all necessary events for it.
1564 if (lmp_csb_slave_capable(hdev
)) {
1565 events
[2] |= 0x01; /* Synchronization Train Received */
1566 events
[2] |= 0x02; /* CSB Receive */
1567 events
[2] |= 0x04; /* CSB Timeout */
1568 events
[2] |= 0x08; /* Truncated Page Complete */
1571 /* Enable Authenticated Payload Timeout Expired event if supported */
1572 if (lmp_ping_capable(hdev
))
1575 hci_req_add(req
, HCI_OP_SET_EVENT_MASK_PAGE_2
, sizeof(events
), events
);
1578 static void hci_init3_req(struct hci_request
*req
, unsigned long opt
)
1580 struct hci_dev
*hdev
= req
->hdev
;
1583 /* Some Broadcom based Bluetooth controllers do not support the
1584 * Delete Stored Link Key command. They are clearly indicating its
1585 * absence in the bit mask of supported commands.
1587 * Check the supported commands and only if the the command is marked
1588 * as supported send it. If not supported assume that the controller
1589 * does not have actual support for stored link keys which makes this
1590 * command redundant anyway.
1592 * Some controllers indicate that they support handling deleting
1593 * stored link keys, but they don't. The quirk lets a driver
1594 * just disable this command.
1596 if (hdev
->commands
[6] & 0x80 &&
1597 !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY
, &hdev
->quirks
)) {
1598 struct hci_cp_delete_stored_link_key cp
;
1600 bacpy(&cp
.bdaddr
, BDADDR_ANY
);
1601 cp
.delete_all
= 0x01;
1602 hci_req_add(req
, HCI_OP_DELETE_STORED_LINK_KEY
,
1606 if (hdev
->commands
[5] & 0x10)
1607 hci_setup_link_policy(req
);
1609 if (lmp_le_capable(hdev
)) {
1612 memset(events
, 0, sizeof(events
));
1615 /* If controller supports the Connection Parameters Request
1616 * Link Layer Procedure, enable the corresponding event.
1618 if (hdev
->le_features
[0] & HCI_LE_CONN_PARAM_REQ_PROC
)
1619 events
[0] |= 0x20; /* LE Remote Connection
1623 hci_req_add(req
, HCI_OP_LE_SET_EVENT_MASK
, sizeof(events
),
1626 hci_set_le_support(req
);
1629 /* Read features beyond page 1 if available */
1630 for (p
= 2; p
< HCI_MAX_PAGES
&& p
<= hdev
->max_page
; p
++) {
1631 struct hci_cp_read_local_ext_features cp
;
1634 hci_req_add(req
, HCI_OP_READ_LOCAL_EXT_FEATURES
,
1639 static void hci_init4_req(struct hci_request
*req
, unsigned long opt
)
1641 struct hci_dev
*hdev
= req
->hdev
;
1643 /* Set event mask page 2 if the HCI command for it is supported */
1644 if (hdev
->commands
[22] & 0x04)
1645 hci_set_event_mask_page_2(req
);
1647 /* Check for Synchronization Train support */
1648 if (lmp_sync_train_capable(hdev
))
1649 hci_req_add(req
, HCI_OP_READ_SYNC_TRAIN_PARAMS
, 0, NULL
);
1651 /* Enable Secure Connections if supported and configured */
1652 if ((lmp_sc_capable(hdev
) ||
1653 test_bit(HCI_FORCE_SC
, &hdev
->dbg_flags
)) &&
1654 test_bit(HCI_SC_ENABLED
, &hdev
->dev_flags
)) {
1656 hci_req_add(req
, HCI_OP_WRITE_SC_SUPPORT
,
1657 sizeof(support
), &support
);
1661 static int __hci_init(struct hci_dev
*hdev
)
1665 err
= __hci_req_sync(hdev
, hci_init1_req
, 0, HCI_INIT_TIMEOUT
);
1669 /* The Device Under Test (DUT) mode is special and available for
1670 * all controller types. So just create it early on.
1672 if (test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
1673 debugfs_create_file("dut_mode", 0644, hdev
->debugfs
, hdev
,
1677 /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode
1678 * BR/EDR/LE type controllers. AMP controllers only need the
1681 if (hdev
->dev_type
!= HCI_BREDR
)
1684 err
= __hci_req_sync(hdev
, hci_init2_req
, 0, HCI_INIT_TIMEOUT
);
1688 err
= __hci_req_sync(hdev
, hci_init3_req
, 0, HCI_INIT_TIMEOUT
);
1692 err
= __hci_req_sync(hdev
, hci_init4_req
, 0, HCI_INIT_TIMEOUT
);
1696 /* Only create debugfs entries during the initial setup
1697 * phase and not every time the controller gets powered on.
1699 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
))
1702 debugfs_create_file("features", 0444, hdev
->debugfs
, hdev
,
1704 debugfs_create_u16("manufacturer", 0444, hdev
->debugfs
,
1705 &hdev
->manufacturer
);
1706 debugfs_create_u8("hci_version", 0444, hdev
->debugfs
, &hdev
->hci_ver
);
1707 debugfs_create_u16("hci_revision", 0444, hdev
->debugfs
, &hdev
->hci_rev
);
1708 debugfs_create_file("blacklist", 0444, hdev
->debugfs
, hdev
,
1710 debugfs_create_file("uuids", 0444, hdev
->debugfs
, hdev
, &uuids_fops
);
1712 debugfs_create_file("conn_info_min_age", 0644, hdev
->debugfs
, hdev
,
1713 &conn_info_min_age_fops
);
1714 debugfs_create_file("conn_info_max_age", 0644, hdev
->debugfs
, hdev
,
1715 &conn_info_max_age_fops
);
1717 if (lmp_bredr_capable(hdev
)) {
1718 debugfs_create_file("inquiry_cache", 0444, hdev
->debugfs
,
1719 hdev
, &inquiry_cache_fops
);
1720 debugfs_create_file("link_keys", 0400, hdev
->debugfs
,
1721 hdev
, &link_keys_fops
);
1722 debugfs_create_file("dev_class", 0444, hdev
->debugfs
,
1723 hdev
, &dev_class_fops
);
1724 debugfs_create_file("voice_setting", 0444, hdev
->debugfs
,
1725 hdev
, &voice_setting_fops
);
1728 if (lmp_ssp_capable(hdev
)) {
1729 debugfs_create_file("auto_accept_delay", 0644, hdev
->debugfs
,
1730 hdev
, &auto_accept_delay_fops
);
1731 debugfs_create_file("force_sc_support", 0644, hdev
->debugfs
,
1732 hdev
, &force_sc_support_fops
);
1733 debugfs_create_file("sc_only_mode", 0444, hdev
->debugfs
,
1734 hdev
, &sc_only_mode_fops
);
1737 if (lmp_sniff_capable(hdev
)) {
1738 debugfs_create_file("idle_timeout", 0644, hdev
->debugfs
,
1739 hdev
, &idle_timeout_fops
);
1740 debugfs_create_file("sniff_min_interval", 0644, hdev
->debugfs
,
1741 hdev
, &sniff_min_interval_fops
);
1742 debugfs_create_file("sniff_max_interval", 0644, hdev
->debugfs
,
1743 hdev
, &sniff_max_interval_fops
);
1746 if (lmp_le_capable(hdev
)) {
1747 debugfs_create_file("identity", 0400, hdev
->debugfs
,
1748 hdev
, &identity_fops
);
1749 debugfs_create_file("rpa_timeout", 0644, hdev
->debugfs
,
1750 hdev
, &rpa_timeout_fops
);
1751 debugfs_create_file("random_address", 0444, hdev
->debugfs
,
1752 hdev
, &random_address_fops
);
1753 debugfs_create_file("static_address", 0444, hdev
->debugfs
,
1754 hdev
, &static_address_fops
);
1756 /* For controllers with a public address, provide a debug
1757 * option to force the usage of the configured static
1758 * address. By default the public address is used.
1760 if (bacmp(&hdev
->bdaddr
, BDADDR_ANY
))
1761 debugfs_create_file("force_static_address", 0644,
1762 hdev
->debugfs
, hdev
,
1763 &force_static_address_fops
);
1765 debugfs_create_u8("white_list_size", 0444, hdev
->debugfs
,
1766 &hdev
->le_white_list_size
);
1767 debugfs_create_file("white_list", 0444, hdev
->debugfs
, hdev
,
1769 debugfs_create_file("identity_resolving_keys", 0400,
1770 hdev
->debugfs
, hdev
,
1771 &identity_resolving_keys_fops
);
1772 debugfs_create_file("long_term_keys", 0400, hdev
->debugfs
,
1773 hdev
, &long_term_keys_fops
);
1774 debugfs_create_file("conn_min_interval", 0644, hdev
->debugfs
,
1775 hdev
, &conn_min_interval_fops
);
1776 debugfs_create_file("conn_max_interval", 0644, hdev
->debugfs
,
1777 hdev
, &conn_max_interval_fops
);
1778 debugfs_create_file("conn_latency", 0644, hdev
->debugfs
,
1779 hdev
, &conn_latency_fops
);
1780 debugfs_create_file("supervision_timeout", 0644, hdev
->debugfs
,
1781 hdev
, &supervision_timeout_fops
);
1782 debugfs_create_file("adv_channel_map", 0644, hdev
->debugfs
,
1783 hdev
, &adv_channel_map_fops
);
1784 debugfs_create_file("device_list", 0444, hdev
->debugfs
, hdev
,
1786 debugfs_create_u16("discov_interleaved_timeout", 0644,
1788 &hdev
->discov_interleaved_timeout
);
1794 static void hci_scan_req(struct hci_request
*req
, unsigned long opt
)
1798 BT_DBG("%s %x", req
->hdev
->name
, scan
);
1800 /* Inquiry and Page scans */
1801 hci_req_add(req
, HCI_OP_WRITE_SCAN_ENABLE
, 1, &scan
);
1804 static void hci_auth_req(struct hci_request
*req
, unsigned long opt
)
1808 BT_DBG("%s %x", req
->hdev
->name
, auth
);
1810 /* Authentication */
1811 hci_req_add(req
, HCI_OP_WRITE_AUTH_ENABLE
, 1, &auth
);
1814 static void hci_encrypt_req(struct hci_request
*req
, unsigned long opt
)
1818 BT_DBG("%s %x", req
->hdev
->name
, encrypt
);
1821 hci_req_add(req
, HCI_OP_WRITE_ENCRYPT_MODE
, 1, &encrypt
);
1824 static void hci_linkpol_req(struct hci_request
*req
, unsigned long opt
)
1826 __le16 policy
= cpu_to_le16(opt
);
1828 BT_DBG("%s %x", req
->hdev
->name
, policy
);
1830 /* Default link policy */
1831 hci_req_add(req
, HCI_OP_WRITE_DEF_LINK_POLICY
, 2, &policy
);
1834 /* Get HCI device by index.
1835 * Device is held on return. */
1836 struct hci_dev
*hci_dev_get(int index
)
1838 struct hci_dev
*hdev
= NULL
, *d
;
1840 BT_DBG("%d", index
);
1845 read_lock(&hci_dev_list_lock
);
1846 list_for_each_entry(d
, &hci_dev_list
, list
) {
1847 if (d
->id
== index
) {
1848 hdev
= hci_dev_hold(d
);
1852 read_unlock(&hci_dev_list_lock
);
1856 /* ---- Inquiry support ---- */
1858 bool hci_discovery_active(struct hci_dev
*hdev
)
1860 struct discovery_state
*discov
= &hdev
->discovery
;
1862 switch (discov
->state
) {
1863 case DISCOVERY_FINDING
:
1864 case DISCOVERY_RESOLVING
:
1872 void hci_discovery_set_state(struct hci_dev
*hdev
, int state
)
1874 BT_DBG("%s state %u -> %u", hdev
->name
, hdev
->discovery
.state
, state
);
1876 if (hdev
->discovery
.state
== state
)
1880 case DISCOVERY_STOPPED
:
1881 hci_update_background_scan(hdev
);
1883 if (hdev
->discovery
.state
!= DISCOVERY_STARTING
)
1884 mgmt_discovering(hdev
, 0);
1886 case DISCOVERY_STARTING
:
1888 case DISCOVERY_FINDING
:
1889 mgmt_discovering(hdev
, 1);
1891 case DISCOVERY_RESOLVING
:
1893 case DISCOVERY_STOPPING
:
1897 hdev
->discovery
.state
= state
;
1900 void hci_inquiry_cache_flush(struct hci_dev
*hdev
)
1902 struct discovery_state
*cache
= &hdev
->discovery
;
1903 struct inquiry_entry
*p
, *n
;
1905 list_for_each_entry_safe(p
, n
, &cache
->all
, all
) {
1910 INIT_LIST_HEAD(&cache
->unknown
);
1911 INIT_LIST_HEAD(&cache
->resolve
);
1914 struct inquiry_entry
*hci_inquiry_cache_lookup(struct hci_dev
*hdev
,
1917 struct discovery_state
*cache
= &hdev
->discovery
;
1918 struct inquiry_entry
*e
;
1920 BT_DBG("cache %p, %pMR", cache
, bdaddr
);
1922 list_for_each_entry(e
, &cache
->all
, all
) {
1923 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
1930 struct inquiry_entry
*hci_inquiry_cache_lookup_unknown(struct hci_dev
*hdev
,
1933 struct discovery_state
*cache
= &hdev
->discovery
;
1934 struct inquiry_entry
*e
;
1936 BT_DBG("cache %p, %pMR", cache
, bdaddr
);
1938 list_for_each_entry(e
, &cache
->unknown
, list
) {
1939 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
1946 struct inquiry_entry
*hci_inquiry_cache_lookup_resolve(struct hci_dev
*hdev
,
1950 struct discovery_state
*cache
= &hdev
->discovery
;
1951 struct inquiry_entry
*e
;
1953 BT_DBG("cache %p bdaddr %pMR state %d", cache
, bdaddr
, state
);
1955 list_for_each_entry(e
, &cache
->resolve
, list
) {
1956 if (!bacmp(bdaddr
, BDADDR_ANY
) && e
->name_state
== state
)
1958 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
1965 void hci_inquiry_cache_update_resolve(struct hci_dev
*hdev
,
1966 struct inquiry_entry
*ie
)
1968 struct discovery_state
*cache
= &hdev
->discovery
;
1969 struct list_head
*pos
= &cache
->resolve
;
1970 struct inquiry_entry
*p
;
1972 list_del(&ie
->list
);
1974 list_for_each_entry(p
, &cache
->resolve
, list
) {
1975 if (p
->name_state
!= NAME_PENDING
&&
1976 abs(p
->data
.rssi
) >= abs(ie
->data
.rssi
))
1981 list_add(&ie
->list
, pos
);
1984 u32
hci_inquiry_cache_update(struct hci_dev
*hdev
, struct inquiry_data
*data
,
1987 struct discovery_state
*cache
= &hdev
->discovery
;
1988 struct inquiry_entry
*ie
;
1991 BT_DBG("cache %p, %pMR", cache
, &data
->bdaddr
);
1993 hci_remove_remote_oob_data(hdev
, &data
->bdaddr
);
1995 if (!data
->ssp_mode
)
1996 flags
|= MGMT_DEV_FOUND_LEGACY_PAIRING
;
1998 ie
= hci_inquiry_cache_lookup(hdev
, &data
->bdaddr
);
2000 if (!ie
->data
.ssp_mode
)
2001 flags
|= MGMT_DEV_FOUND_LEGACY_PAIRING
;
2003 if (ie
->name_state
== NAME_NEEDED
&&
2004 data
->rssi
!= ie
->data
.rssi
) {
2005 ie
->data
.rssi
= data
->rssi
;
2006 hci_inquiry_cache_update_resolve(hdev
, ie
);
2012 /* Entry not in the cache. Add new one. */
2013 ie
= kzalloc(sizeof(struct inquiry_entry
), GFP_ATOMIC
);
2015 flags
|= MGMT_DEV_FOUND_CONFIRM_NAME
;
2019 list_add(&ie
->all
, &cache
->all
);
2022 ie
->name_state
= NAME_KNOWN
;
2024 ie
->name_state
= NAME_NOT_KNOWN
;
2025 list_add(&ie
->list
, &cache
->unknown
);
2029 if (name_known
&& ie
->name_state
!= NAME_KNOWN
&&
2030 ie
->name_state
!= NAME_PENDING
) {
2031 ie
->name_state
= NAME_KNOWN
;
2032 list_del(&ie
->list
);
2035 memcpy(&ie
->data
, data
, sizeof(*data
));
2036 ie
->timestamp
= jiffies
;
2037 cache
->timestamp
= jiffies
;
2039 if (ie
->name_state
== NAME_NOT_KNOWN
)
2040 flags
|= MGMT_DEV_FOUND_CONFIRM_NAME
;
2046 static int inquiry_cache_dump(struct hci_dev
*hdev
, int num
, __u8
*buf
)
2048 struct discovery_state
*cache
= &hdev
->discovery
;
2049 struct inquiry_info
*info
= (struct inquiry_info
*) buf
;
2050 struct inquiry_entry
*e
;
2053 list_for_each_entry(e
, &cache
->all
, all
) {
2054 struct inquiry_data
*data
= &e
->data
;
2059 bacpy(&info
->bdaddr
, &data
->bdaddr
);
2060 info
->pscan_rep_mode
= data
->pscan_rep_mode
;
2061 info
->pscan_period_mode
= data
->pscan_period_mode
;
2062 info
->pscan_mode
= data
->pscan_mode
;
2063 memcpy(info
->dev_class
, data
->dev_class
, 3);
2064 info
->clock_offset
= data
->clock_offset
;
2070 BT_DBG("cache %p, copied %d", cache
, copied
);
2074 static void hci_inq_req(struct hci_request
*req
, unsigned long opt
)
2076 struct hci_inquiry_req
*ir
= (struct hci_inquiry_req
*) opt
;
2077 struct hci_dev
*hdev
= req
->hdev
;
2078 struct hci_cp_inquiry cp
;
2080 BT_DBG("%s", hdev
->name
);
2082 if (test_bit(HCI_INQUIRY
, &hdev
->flags
))
2086 memcpy(&cp
.lap
, &ir
->lap
, 3);
2087 cp
.length
= ir
->length
;
2088 cp
.num_rsp
= ir
->num_rsp
;
2089 hci_req_add(req
, HCI_OP_INQUIRY
, sizeof(cp
), &cp
);
2092 static int wait_inquiry(void *word
)
2095 return signal_pending(current
);
2098 int hci_inquiry(void __user
*arg
)
2100 __u8 __user
*ptr
= arg
;
2101 struct hci_inquiry_req ir
;
2102 struct hci_dev
*hdev
;
2103 int err
= 0, do_inquiry
= 0, max_rsp
;
2107 if (copy_from_user(&ir
, ptr
, sizeof(ir
)))
2110 hdev
= hci_dev_get(ir
.dev_id
);
2114 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2119 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
2124 if (hdev
->dev_type
!= HCI_BREDR
) {
2129 if (!test_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
)) {
2135 if (inquiry_cache_age(hdev
) > INQUIRY_CACHE_AGE_MAX
||
2136 inquiry_cache_empty(hdev
) || ir
.flags
& IREQ_CACHE_FLUSH
) {
2137 hci_inquiry_cache_flush(hdev
);
2140 hci_dev_unlock(hdev
);
2142 timeo
= ir
.length
* msecs_to_jiffies(2000);
2145 err
= hci_req_sync(hdev
, hci_inq_req
, (unsigned long) &ir
,
2150 /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
2151 * cleared). If it is interrupted by a signal, return -EINTR.
2153 if (wait_on_bit(&hdev
->flags
, HCI_INQUIRY
, wait_inquiry
,
2154 TASK_INTERRUPTIBLE
))
2158 /* for unlimited number of responses we will use buffer with
2161 max_rsp
= (ir
.num_rsp
== 0) ? 255 : ir
.num_rsp
;
2163 /* cache_dump can't sleep. Therefore we allocate temp buffer and then
2164 * copy it to the user space.
2166 buf
= kmalloc(sizeof(struct inquiry_info
) * max_rsp
, GFP_KERNEL
);
2173 ir
.num_rsp
= inquiry_cache_dump(hdev
, max_rsp
, buf
);
2174 hci_dev_unlock(hdev
);
2176 BT_DBG("num_rsp %d", ir
.num_rsp
);
2178 if (!copy_to_user(ptr
, &ir
, sizeof(ir
))) {
2180 if (copy_to_user(ptr
, buf
, sizeof(struct inquiry_info
) *
2193 static int hci_dev_do_open(struct hci_dev
*hdev
)
2197 BT_DBG("%s %p", hdev
->name
, hdev
);
2201 if (test_bit(HCI_UNREGISTER
, &hdev
->dev_flags
)) {
2206 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
2207 /* Check for rfkill but allow the HCI setup stage to
2208 * proceed (which in itself doesn't cause any RF activity).
2210 if (test_bit(HCI_RFKILLED
, &hdev
->dev_flags
)) {
2215 /* Check for valid public address or a configured static
2216 * random adddress, but let the HCI setup proceed to
2217 * be able to determine if there is a public address
2220 * In case of user channel usage, it is not important
2221 * if a public address or static random address is
2224 * This check is only valid for BR/EDR controllers
2225 * since AMP controllers do not have an address.
2227 if (!test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
) &&
2228 hdev
->dev_type
== HCI_BREDR
&&
2229 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
) &&
2230 !bacmp(&hdev
->static_addr
, BDADDR_ANY
)) {
2231 ret
= -EADDRNOTAVAIL
;
2236 if (test_bit(HCI_UP
, &hdev
->flags
)) {
2241 if (hdev
->open(hdev
)) {
2246 atomic_set(&hdev
->cmd_cnt
, 1);
2247 set_bit(HCI_INIT
, &hdev
->flags
);
2249 if (hdev
->setup
&& test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
2250 ret
= hdev
->setup(hdev
);
2252 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG
, &hdev
->quirks
) ||
2253 test_bit(HCI_QUIRK_INVALID_BDADDR
, &hdev
->quirks
))
2254 set_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
);
2257 /* If public address change is configured, ensure that the
2258 * address gets programmed. If the driver does not support
2259 * changing the public address, fail the power on procedure.
2261 if (!ret
&& bacmp(&hdev
->public_addr
, BDADDR_ANY
)) {
2262 if (hdev
->set_bdaddr
)
2263 ret
= hdev
->set_bdaddr(hdev
, &hdev
->public_addr
);
2265 ret
= -EADDRNOTAVAIL
;
2269 if (!test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
) &&
2270 !test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
))
2271 ret
= __hci_init(hdev
);
2274 clear_bit(HCI_INIT
, &hdev
->flags
);
2278 set_bit(HCI_RPA_EXPIRED
, &hdev
->dev_flags
);
2279 set_bit(HCI_UP
, &hdev
->flags
);
2280 hci_notify(hdev
, HCI_DEV_UP
);
2281 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
) &&
2282 !test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
) &&
2283 !test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
) &&
2284 hdev
->dev_type
== HCI_BREDR
) {
2286 mgmt_powered(hdev
, 1);
2287 hci_dev_unlock(hdev
);
2290 /* Init failed, cleanup */
2291 flush_work(&hdev
->tx_work
);
2292 flush_work(&hdev
->cmd_work
);
2293 flush_work(&hdev
->rx_work
);
2295 skb_queue_purge(&hdev
->cmd_q
);
2296 skb_queue_purge(&hdev
->rx_q
);
2301 if (hdev
->sent_cmd
) {
2302 kfree_skb(hdev
->sent_cmd
);
2303 hdev
->sent_cmd
= NULL
;
2307 hdev
->flags
&= BIT(HCI_RAW
);
2311 hci_req_unlock(hdev
);
2315 /* ---- HCI ioctl helpers ---- */
2317 int hci_dev_open(__u16 dev
)
2319 struct hci_dev
*hdev
;
2322 hdev
= hci_dev_get(dev
);
2326 /* Devices that are marked as unconfigured can only be powered
2327 * up as user channel. Trying to bring them up as normal devices
2328 * will result into a failure. Only user channel operation is
2331 * When this function is called for a user channel, the flag
2332 * HCI_USER_CHANNEL will be set first before attempting to
2335 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
) &&
2336 !test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2341 /* We need to ensure that no other power on/off work is pending
2342 * before proceeding to call hci_dev_do_open. This is
2343 * particularly important if the setup procedure has not yet
2346 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2347 cancel_delayed_work(&hdev
->power_off
);
2349 /* After this call it is guaranteed that the setup procedure
2350 * has finished. This means that error conditions like RFKILL
2351 * or no valid public or static random address apply.
2353 flush_workqueue(hdev
->req_workqueue
);
2355 err
= hci_dev_do_open(hdev
);
2362 /* This function requires the caller holds hdev->lock */
2363 static void hci_pend_le_actions_clear(struct hci_dev
*hdev
)
2365 struct hci_conn_params
*p
;
2367 list_for_each_entry(p
, &hdev
->le_conn_params
, list
)
2368 list_del_init(&p
->action
);
2370 BT_DBG("All LE pending actions cleared");
2373 static int hci_dev_do_close(struct hci_dev
*hdev
)
2375 BT_DBG("%s %p", hdev
->name
, hdev
);
2377 cancel_delayed_work(&hdev
->power_off
);
2379 hci_req_cancel(hdev
, ENODEV
);
2382 if (!test_and_clear_bit(HCI_UP
, &hdev
->flags
)) {
2383 cancel_delayed_work_sync(&hdev
->cmd_timer
);
2384 hci_req_unlock(hdev
);
2388 /* Flush RX and TX works */
2389 flush_work(&hdev
->tx_work
);
2390 flush_work(&hdev
->rx_work
);
2392 if (hdev
->discov_timeout
> 0) {
2393 cancel_delayed_work(&hdev
->discov_off
);
2394 hdev
->discov_timeout
= 0;
2395 clear_bit(HCI_DISCOVERABLE
, &hdev
->dev_flags
);
2396 clear_bit(HCI_LIMITED_DISCOVERABLE
, &hdev
->dev_flags
);
2399 if (test_and_clear_bit(HCI_SERVICE_CACHE
, &hdev
->dev_flags
))
2400 cancel_delayed_work(&hdev
->service_cache
);
2402 cancel_delayed_work_sync(&hdev
->le_scan_disable
);
2404 if (test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2405 cancel_delayed_work_sync(&hdev
->rpa_expired
);
2408 hci_inquiry_cache_flush(hdev
);
2409 hci_conn_hash_flush(hdev
);
2410 hci_pend_le_actions_clear(hdev
);
2411 hci_dev_unlock(hdev
);
2413 hci_notify(hdev
, HCI_DEV_DOWN
);
2419 skb_queue_purge(&hdev
->cmd_q
);
2420 atomic_set(&hdev
->cmd_cnt
, 1);
2421 if (!test_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
) &&
2422 !test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
) &&
2423 test_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
)) {
2424 set_bit(HCI_INIT
, &hdev
->flags
);
2425 __hci_req_sync(hdev
, hci_reset_req
, 0, HCI_CMD_TIMEOUT
);
2426 clear_bit(HCI_INIT
, &hdev
->flags
);
2429 /* flush cmd work */
2430 flush_work(&hdev
->cmd_work
);
2433 skb_queue_purge(&hdev
->rx_q
);
2434 skb_queue_purge(&hdev
->cmd_q
);
2435 skb_queue_purge(&hdev
->raw_q
);
2437 /* Drop last sent command */
2438 if (hdev
->sent_cmd
) {
2439 cancel_delayed_work_sync(&hdev
->cmd_timer
);
2440 kfree_skb(hdev
->sent_cmd
);
2441 hdev
->sent_cmd
= NULL
;
2444 kfree_skb(hdev
->recv_evt
);
2445 hdev
->recv_evt
= NULL
;
2447 /* After this point our queues are empty
2448 * and no tasks are scheduled. */
2452 hdev
->flags
&= BIT(HCI_RAW
);
2453 hdev
->dev_flags
&= ~HCI_PERSISTENT_MASK
;
2455 if (!test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
)) {
2456 if (hdev
->dev_type
== HCI_BREDR
) {
2458 mgmt_powered(hdev
, 0);
2459 hci_dev_unlock(hdev
);
2463 /* Controller radio is available but is currently powered down */
2464 hdev
->amp_status
= AMP_STATUS_POWERED_DOWN
;
2466 memset(hdev
->eir
, 0, sizeof(hdev
->eir
));
2467 memset(hdev
->dev_class
, 0, sizeof(hdev
->dev_class
));
2468 bacpy(&hdev
->random_addr
, BDADDR_ANY
);
2470 hci_req_unlock(hdev
);
2476 int hci_dev_close(__u16 dev
)
2478 struct hci_dev
*hdev
;
2481 hdev
= hci_dev_get(dev
);
2485 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2490 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2491 cancel_delayed_work(&hdev
->power_off
);
2493 err
= hci_dev_do_close(hdev
);
2500 int hci_dev_reset(__u16 dev
)
2502 struct hci_dev
*hdev
;
2505 hdev
= hci_dev_get(dev
);
2511 if (!test_bit(HCI_UP
, &hdev
->flags
)) {
2516 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2521 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
2527 skb_queue_purge(&hdev
->rx_q
);
2528 skb_queue_purge(&hdev
->cmd_q
);
2531 hci_inquiry_cache_flush(hdev
);
2532 hci_conn_hash_flush(hdev
);
2533 hci_dev_unlock(hdev
);
2538 atomic_set(&hdev
->cmd_cnt
, 1);
2539 hdev
->acl_cnt
= 0; hdev
->sco_cnt
= 0; hdev
->le_cnt
= 0;
2541 ret
= __hci_req_sync(hdev
, hci_reset_req
, 0, HCI_INIT_TIMEOUT
);
2544 hci_req_unlock(hdev
);
2549 int hci_dev_reset_stat(__u16 dev
)
2551 struct hci_dev
*hdev
;
2554 hdev
= hci_dev_get(dev
);
2558 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2563 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
2568 memset(&hdev
->stat
, 0, sizeof(struct hci_dev_stats
));
2575 int hci_dev_cmd(unsigned int cmd
, void __user
*arg
)
2577 struct hci_dev
*hdev
;
2578 struct hci_dev_req dr
;
2581 if (copy_from_user(&dr
, arg
, sizeof(dr
)))
2584 hdev
= hci_dev_get(dr
.dev_id
);
2588 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2593 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
2598 if (hdev
->dev_type
!= HCI_BREDR
) {
2603 if (!test_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
)) {
2610 err
= hci_req_sync(hdev
, hci_auth_req
, dr
.dev_opt
,
2615 if (!lmp_encrypt_capable(hdev
)) {
2620 if (!test_bit(HCI_AUTH
, &hdev
->flags
)) {
2621 /* Auth must be enabled first */
2622 err
= hci_req_sync(hdev
, hci_auth_req
, dr
.dev_opt
,
2628 err
= hci_req_sync(hdev
, hci_encrypt_req
, dr
.dev_opt
,
2633 err
= hci_req_sync(hdev
, hci_scan_req
, dr
.dev_opt
,
2638 err
= hci_req_sync(hdev
, hci_linkpol_req
, dr
.dev_opt
,
2642 case HCISETLINKMODE
:
2643 hdev
->link_mode
= ((__u16
) dr
.dev_opt
) &
2644 (HCI_LM_MASTER
| HCI_LM_ACCEPT
);
2648 hdev
->pkt_type
= (__u16
) dr
.dev_opt
;
2652 hdev
->acl_mtu
= *((__u16
*) &dr
.dev_opt
+ 1);
2653 hdev
->acl_pkts
= *((__u16
*) &dr
.dev_opt
+ 0);
2657 hdev
->sco_mtu
= *((__u16
*) &dr
.dev_opt
+ 1);
2658 hdev
->sco_pkts
= *((__u16
*) &dr
.dev_opt
+ 0);
2671 int hci_get_dev_list(void __user
*arg
)
2673 struct hci_dev
*hdev
;
2674 struct hci_dev_list_req
*dl
;
2675 struct hci_dev_req
*dr
;
2676 int n
= 0, size
, err
;
2679 if (get_user(dev_num
, (__u16 __user
*) arg
))
2682 if (!dev_num
|| dev_num
> (PAGE_SIZE
* 2) / sizeof(*dr
))
2685 size
= sizeof(*dl
) + dev_num
* sizeof(*dr
);
2687 dl
= kzalloc(size
, GFP_KERNEL
);
2693 read_lock(&hci_dev_list_lock
);
2694 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
2695 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2696 cancel_delayed_work(&hdev
->power_off
);
2698 if (!test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2699 set_bit(HCI_PAIRABLE
, &hdev
->dev_flags
);
2701 (dr
+ n
)->dev_id
= hdev
->id
;
2702 (dr
+ n
)->dev_opt
= hdev
->flags
;
2707 read_unlock(&hci_dev_list_lock
);
2710 size
= sizeof(*dl
) + n
* sizeof(*dr
);
2712 err
= copy_to_user(arg
, dl
, size
);
2715 return err
? -EFAULT
: 0;
2718 int hci_get_dev_info(void __user
*arg
)
2720 struct hci_dev
*hdev
;
2721 struct hci_dev_info di
;
2724 if (copy_from_user(&di
, arg
, sizeof(di
)))
2727 hdev
= hci_dev_get(di
.dev_id
);
2731 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2732 cancel_delayed_work_sync(&hdev
->power_off
);
2734 if (!test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2735 set_bit(HCI_PAIRABLE
, &hdev
->dev_flags
);
2737 strcpy(di
.name
, hdev
->name
);
2738 di
.bdaddr
= hdev
->bdaddr
;
2739 di
.type
= (hdev
->bus
& 0x0f) | ((hdev
->dev_type
& 0x03) << 4);
2740 di
.flags
= hdev
->flags
;
2741 di
.pkt_type
= hdev
->pkt_type
;
2742 if (lmp_bredr_capable(hdev
)) {
2743 di
.acl_mtu
= hdev
->acl_mtu
;
2744 di
.acl_pkts
= hdev
->acl_pkts
;
2745 di
.sco_mtu
= hdev
->sco_mtu
;
2746 di
.sco_pkts
= hdev
->sco_pkts
;
2748 di
.acl_mtu
= hdev
->le_mtu
;
2749 di
.acl_pkts
= hdev
->le_pkts
;
2753 di
.link_policy
= hdev
->link_policy
;
2754 di
.link_mode
= hdev
->link_mode
;
2756 memcpy(&di
.stat
, &hdev
->stat
, sizeof(di
.stat
));
2757 memcpy(&di
.features
, &hdev
->features
, sizeof(di
.features
));
2759 if (copy_to_user(arg
, &di
, sizeof(di
)))
2767 /* ---- Interface to HCI drivers ---- */
2769 static int hci_rfkill_set_block(void *data
, bool blocked
)
2771 struct hci_dev
*hdev
= data
;
2773 BT_DBG("%p name %s blocked %d", hdev
, hdev
->name
, blocked
);
2775 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
))
2779 set_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
2780 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
))
2781 hci_dev_do_close(hdev
);
2783 clear_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
2789 static const struct rfkill_ops hci_rfkill_ops
= {
2790 .set_block
= hci_rfkill_set_block
,
2793 static void hci_power_on(struct work_struct
*work
)
2795 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, power_on
);
2798 BT_DBG("%s", hdev
->name
);
2800 err
= hci_dev_do_open(hdev
);
2802 mgmt_set_powered_failed(hdev
, err
);
2806 /* During the HCI setup phase, a few error conditions are
2807 * ignored and they need to be checked now. If they are still
2808 * valid, it is important to turn the device back off.
2810 if (test_bit(HCI_RFKILLED
, &hdev
->dev_flags
) ||
2811 test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
) ||
2812 (hdev
->dev_type
== HCI_BREDR
&&
2813 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
) &&
2814 !bacmp(&hdev
->static_addr
, BDADDR_ANY
))) {
2815 clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
);
2816 hci_dev_do_close(hdev
);
2817 } else if (test_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
)) {
2818 queue_delayed_work(hdev
->req_workqueue
, &hdev
->power_off
,
2819 HCI_AUTO_OFF_TIMEOUT
);
2822 if (test_and_clear_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
2823 /* For unconfigured devices, set the HCI_RAW flag
2824 * so that userspace can easily identify them.
2826 if (test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
))
2827 set_bit(HCI_RAW
, &hdev
->flags
);
2829 /* For fully configured devices, this will send
2830 * the Index Added event. For unconfigured devices,
2831 * it will send Unconfigued Index Added event.
2833 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
2834 * and no event will be send.
2836 mgmt_index_added(hdev
);
2840 static void hci_power_off(struct work_struct
*work
)
2842 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
,
2845 BT_DBG("%s", hdev
->name
);
2847 hci_dev_do_close(hdev
);
2850 static void hci_discov_off(struct work_struct
*work
)
2852 struct hci_dev
*hdev
;
2854 hdev
= container_of(work
, struct hci_dev
, discov_off
.work
);
2856 BT_DBG("%s", hdev
->name
);
2858 mgmt_discoverable_timeout(hdev
);
2861 void hci_uuids_clear(struct hci_dev
*hdev
)
2863 struct bt_uuid
*uuid
, *tmp
;
2865 list_for_each_entry_safe(uuid
, tmp
, &hdev
->uuids
, list
) {
2866 list_del(&uuid
->list
);
2871 void hci_link_keys_clear(struct hci_dev
*hdev
)
2873 struct list_head
*p
, *n
;
2875 list_for_each_safe(p
, n
, &hdev
->link_keys
) {
2876 struct link_key
*key
;
2878 key
= list_entry(p
, struct link_key
, list
);
2885 void hci_smp_ltks_clear(struct hci_dev
*hdev
)
2887 struct smp_ltk
*k
, *tmp
;
2889 list_for_each_entry_safe(k
, tmp
, &hdev
->long_term_keys
, list
) {
2895 void hci_smp_irks_clear(struct hci_dev
*hdev
)
2897 struct smp_irk
*k
, *tmp
;
2899 list_for_each_entry_safe(k
, tmp
, &hdev
->identity_resolving_keys
, list
) {
2905 struct link_key
*hci_find_link_key(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
2909 list_for_each_entry(k
, &hdev
->link_keys
, list
)
2910 if (bacmp(bdaddr
, &k
->bdaddr
) == 0)
2916 static bool hci_persistent_key(struct hci_dev
*hdev
, struct hci_conn
*conn
,
2917 u8 key_type
, u8 old_key_type
)
2920 if (key_type
< 0x03)
2923 /* Debug keys are insecure so don't store them persistently */
2924 if (key_type
== HCI_LK_DEBUG_COMBINATION
)
2927 /* Changed combination key and there's no previous one */
2928 if (key_type
== HCI_LK_CHANGED_COMBINATION
&& old_key_type
== 0xff)
2931 /* Security mode 3 case */
2935 /* Neither local nor remote side had no-bonding as requirement */
2936 if (conn
->auth_type
> 0x01 && conn
->remote_auth
> 0x01)
2939 /* Local side had dedicated bonding as requirement */
2940 if (conn
->auth_type
== 0x02 || conn
->auth_type
== 0x03)
2943 /* Remote side had dedicated bonding as requirement */
2944 if (conn
->remote_auth
== 0x02 || conn
->remote_auth
== 0x03)
2947 /* If none of the above criteria match, then don't store the key
2952 static bool ltk_type_master(u8 type
)
2954 return (type
== SMP_LTK
);
2957 struct smp_ltk
*hci_find_ltk(struct hci_dev
*hdev
, __le16 ediv
, __le64 rand
,
2962 list_for_each_entry(k
, &hdev
->long_term_keys
, list
) {
2963 if (k
->ediv
!= ediv
|| k
->rand
!= rand
)
2966 if (ltk_type_master(k
->type
) != master
)
2975 struct smp_ltk
*hci_find_ltk_by_addr(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
2976 u8 addr_type
, bool master
)
2980 list_for_each_entry(k
, &hdev
->long_term_keys
, list
)
2981 if (addr_type
== k
->bdaddr_type
&&
2982 bacmp(bdaddr
, &k
->bdaddr
) == 0 &&
2983 ltk_type_master(k
->type
) == master
)
2989 struct smp_irk
*hci_find_irk_by_rpa(struct hci_dev
*hdev
, bdaddr_t
*rpa
)
2991 struct smp_irk
*irk
;
2993 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
2994 if (!bacmp(&irk
->rpa
, rpa
))
2998 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
2999 if (smp_irk_matches(hdev
->tfm_aes
, irk
->val
, rpa
)) {
3000 bacpy(&irk
->rpa
, rpa
);
3008 struct smp_irk
*hci_find_irk_by_addr(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3011 struct smp_irk
*irk
;
3013 /* Identity Address must be public or static random */
3014 if (addr_type
== ADDR_LE_DEV_RANDOM
&& (bdaddr
->b
[5] & 0xc0) != 0xc0)
3017 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
3018 if (addr_type
== irk
->addr_type
&&
3019 bacmp(bdaddr
, &irk
->bdaddr
) == 0)
3026 struct link_key
*hci_add_link_key(struct hci_dev
*hdev
, struct hci_conn
*conn
,
3027 bdaddr_t
*bdaddr
, u8
*val
, u8 type
,
3028 u8 pin_len
, bool *persistent
)
3030 struct link_key
*key
, *old_key
;
3033 old_key
= hci_find_link_key(hdev
, bdaddr
);
3035 old_key_type
= old_key
->type
;
3038 old_key_type
= conn
? conn
->key_type
: 0xff;
3039 key
= kzalloc(sizeof(*key
), GFP_KERNEL
);
3042 list_add(&key
->list
, &hdev
->link_keys
);
3045 BT_DBG("%s key for %pMR type %u", hdev
->name
, bdaddr
, type
);
3047 /* Some buggy controller combinations generate a changed
3048 * combination key for legacy pairing even when there's no
3050 if (type
== HCI_LK_CHANGED_COMBINATION
&&
3051 (!conn
|| conn
->remote_auth
== 0xff) && old_key_type
== 0xff) {
3052 type
= HCI_LK_COMBINATION
;
3054 conn
->key_type
= type
;
3057 bacpy(&key
->bdaddr
, bdaddr
);
3058 memcpy(key
->val
, val
, HCI_LINK_KEY_SIZE
);
3059 key
->pin_len
= pin_len
;
3061 if (type
== HCI_LK_CHANGED_COMBINATION
)
3062 key
->type
= old_key_type
;
3067 *persistent
= hci_persistent_key(hdev
, conn
, type
,
3073 struct smp_ltk
*hci_add_ltk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3074 u8 addr_type
, u8 type
, u8 authenticated
,
3075 u8 tk
[16], u8 enc_size
, __le16 ediv
, __le64 rand
)
3077 struct smp_ltk
*key
, *old_key
;
3078 bool master
= ltk_type_master(type
);
3080 old_key
= hci_find_ltk_by_addr(hdev
, bdaddr
, addr_type
, master
);
3084 key
= kzalloc(sizeof(*key
), GFP_KERNEL
);
3087 list_add(&key
->list
, &hdev
->long_term_keys
);
3090 bacpy(&key
->bdaddr
, bdaddr
);
3091 key
->bdaddr_type
= addr_type
;
3092 memcpy(key
->val
, tk
, sizeof(key
->val
));
3093 key
->authenticated
= authenticated
;
3096 key
->enc_size
= enc_size
;
3102 struct smp_irk
*hci_add_irk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3103 u8 addr_type
, u8 val
[16], bdaddr_t
*rpa
)
3105 struct smp_irk
*irk
;
3107 irk
= hci_find_irk_by_addr(hdev
, bdaddr
, addr_type
);
3109 irk
= kzalloc(sizeof(*irk
), GFP_KERNEL
);
3113 bacpy(&irk
->bdaddr
, bdaddr
);
3114 irk
->addr_type
= addr_type
;
3116 list_add(&irk
->list
, &hdev
->identity_resolving_keys
);
3119 memcpy(irk
->val
, val
, 16);
3120 bacpy(&irk
->rpa
, rpa
);
3125 int hci_remove_link_key(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
3127 struct link_key
*key
;
3129 key
= hci_find_link_key(hdev
, bdaddr
);
3133 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3135 list_del(&key
->list
);
3141 int hci_remove_ltk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 bdaddr_type
)
3143 struct smp_ltk
*k
, *tmp
;
3146 list_for_each_entry_safe(k
, tmp
, &hdev
->long_term_keys
, list
) {
3147 if (bacmp(bdaddr
, &k
->bdaddr
) || k
->bdaddr_type
!= bdaddr_type
)
3150 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3157 return removed
? 0 : -ENOENT
;
3160 void hci_remove_irk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 addr_type
)
3162 struct smp_irk
*k
, *tmp
;
3164 list_for_each_entry_safe(k
, tmp
, &hdev
->identity_resolving_keys
, list
) {
3165 if (bacmp(bdaddr
, &k
->bdaddr
) || k
->addr_type
!= addr_type
)
3168 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3175 /* HCI command timer function */
3176 static void hci_cmd_timeout(struct work_struct
*work
)
3178 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
,
3181 if (hdev
->sent_cmd
) {
3182 struct hci_command_hdr
*sent
= (void *) hdev
->sent_cmd
->data
;
3183 u16 opcode
= __le16_to_cpu(sent
->opcode
);
3185 BT_ERR("%s command 0x%4.4x tx timeout", hdev
->name
, opcode
);
3187 BT_ERR("%s command tx timeout", hdev
->name
);
3190 atomic_set(&hdev
->cmd_cnt
, 1);
3191 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
3194 struct oob_data
*hci_find_remote_oob_data(struct hci_dev
*hdev
,
3197 struct oob_data
*data
;
3199 list_for_each_entry(data
, &hdev
->remote_oob_data
, list
)
3200 if (bacmp(bdaddr
, &data
->bdaddr
) == 0)
3206 int hci_remove_remote_oob_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
3208 struct oob_data
*data
;
3210 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3214 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3216 list_del(&data
->list
);
3222 void hci_remote_oob_data_clear(struct hci_dev
*hdev
)
3224 struct oob_data
*data
, *n
;
3226 list_for_each_entry_safe(data
, n
, &hdev
->remote_oob_data
, list
) {
3227 list_del(&data
->list
);
3232 int hci_add_remote_oob_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3233 u8
*hash
, u8
*randomizer
)
3235 struct oob_data
*data
;
3237 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3239 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3243 bacpy(&data
->bdaddr
, bdaddr
);
3244 list_add(&data
->list
, &hdev
->remote_oob_data
);
3247 memcpy(data
->hash192
, hash
, sizeof(data
->hash192
));
3248 memcpy(data
->randomizer192
, randomizer
, sizeof(data
->randomizer192
));
3250 memset(data
->hash256
, 0, sizeof(data
->hash256
));
3251 memset(data
->randomizer256
, 0, sizeof(data
->randomizer256
));
3253 BT_DBG("%s for %pMR", hdev
->name
, bdaddr
);
3258 int hci_add_remote_oob_ext_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3259 u8
*hash192
, u8
*randomizer192
,
3260 u8
*hash256
, u8
*randomizer256
)
3262 struct oob_data
*data
;
3264 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3266 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3270 bacpy(&data
->bdaddr
, bdaddr
);
3271 list_add(&data
->list
, &hdev
->remote_oob_data
);
3274 memcpy(data
->hash192
, hash192
, sizeof(data
->hash192
));
3275 memcpy(data
->randomizer192
, randomizer192
, sizeof(data
->randomizer192
));
3277 memcpy(data
->hash256
, hash256
, sizeof(data
->hash256
));
3278 memcpy(data
->randomizer256
, randomizer256
, sizeof(data
->randomizer256
));
3280 BT_DBG("%s for %pMR", hdev
->name
, bdaddr
);
3285 struct bdaddr_list
*hci_blacklist_lookup(struct hci_dev
*hdev
,
3286 bdaddr_t
*bdaddr
, u8 type
)
3288 struct bdaddr_list
*b
;
3290 list_for_each_entry(b
, &hdev
->blacklist
, list
) {
3291 if (!bacmp(&b
->bdaddr
, bdaddr
) && b
->bdaddr_type
== type
)
3298 static void hci_blacklist_clear(struct hci_dev
*hdev
)
3300 struct list_head
*p
, *n
;
3302 list_for_each_safe(p
, n
, &hdev
->blacklist
) {
3303 struct bdaddr_list
*b
= list_entry(p
, struct bdaddr_list
, list
);
3310 int hci_blacklist_add(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3312 struct bdaddr_list
*entry
;
3314 if (!bacmp(bdaddr
, BDADDR_ANY
))
3317 if (hci_blacklist_lookup(hdev
, bdaddr
, type
))
3320 entry
= kzalloc(sizeof(struct bdaddr_list
), GFP_KERNEL
);
3324 bacpy(&entry
->bdaddr
, bdaddr
);
3325 entry
->bdaddr_type
= type
;
3327 list_add(&entry
->list
, &hdev
->blacklist
);
3332 int hci_blacklist_del(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3334 struct bdaddr_list
*entry
;
3336 if (!bacmp(bdaddr
, BDADDR_ANY
)) {
3337 hci_blacklist_clear(hdev
);
3341 entry
= hci_blacklist_lookup(hdev
, bdaddr
, type
);
3345 list_del(&entry
->list
);
3351 struct bdaddr_list
*hci_white_list_lookup(struct hci_dev
*hdev
,
3352 bdaddr_t
*bdaddr
, u8 type
)
3354 struct bdaddr_list
*b
;
3356 list_for_each_entry(b
, &hdev
->le_white_list
, list
) {
3357 if (!bacmp(&b
->bdaddr
, bdaddr
) && b
->bdaddr_type
== type
)
3364 void hci_white_list_clear(struct hci_dev
*hdev
)
3366 struct list_head
*p
, *n
;
3368 list_for_each_safe(p
, n
, &hdev
->le_white_list
) {
3369 struct bdaddr_list
*b
= list_entry(p
, struct bdaddr_list
, list
);
3376 int hci_white_list_add(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3378 struct bdaddr_list
*entry
;
3380 if (!bacmp(bdaddr
, BDADDR_ANY
))
3383 entry
= kzalloc(sizeof(struct bdaddr_list
), GFP_KERNEL
);
3387 bacpy(&entry
->bdaddr
, bdaddr
);
3388 entry
->bdaddr_type
= type
;
3390 list_add(&entry
->list
, &hdev
->le_white_list
);
3395 int hci_white_list_del(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3397 struct bdaddr_list
*entry
;
3399 if (!bacmp(bdaddr
, BDADDR_ANY
))
3402 entry
= hci_white_list_lookup(hdev
, bdaddr
, type
);
3406 list_del(&entry
->list
);
3412 /* This function requires the caller holds hdev->lock */
3413 struct hci_conn_params
*hci_conn_params_lookup(struct hci_dev
*hdev
,
3414 bdaddr_t
*addr
, u8 addr_type
)
3416 struct hci_conn_params
*params
;
3418 /* The conn params list only contains identity addresses */
3419 if (!hci_is_identity_address(addr
, addr_type
))
3422 list_for_each_entry(params
, &hdev
->le_conn_params
, list
) {
3423 if (bacmp(¶ms
->addr
, addr
) == 0 &&
3424 params
->addr_type
== addr_type
) {
3432 static bool is_connected(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 type
)
3434 struct hci_conn
*conn
;
3436 conn
= hci_conn_hash_lookup_ba(hdev
, LE_LINK
, addr
);
3440 if (conn
->dst_type
!= type
)
3443 if (conn
->state
!= BT_CONNECTED
)
3449 /* This function requires the caller holds hdev->lock */
3450 struct hci_conn_params
*hci_pend_le_action_lookup(struct list_head
*list
,
3451 bdaddr_t
*addr
, u8 addr_type
)
3453 struct hci_conn_params
*param
;
3455 /* The list only contains identity addresses */
3456 if (!hci_is_identity_address(addr
, addr_type
))
3459 list_for_each_entry(param
, list
, action
) {
3460 if (bacmp(¶m
->addr
, addr
) == 0 &&
3461 param
->addr_type
== addr_type
)
3468 /* This function requires the caller holds hdev->lock */
3469 struct hci_conn_params
*hci_conn_params_add(struct hci_dev
*hdev
,
3470 bdaddr_t
*addr
, u8 addr_type
)
3472 struct hci_conn_params
*params
;
3474 if (!hci_is_identity_address(addr
, addr_type
))
3477 params
= hci_conn_params_lookup(hdev
, addr
, addr_type
);
3481 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3483 BT_ERR("Out of memory");
3487 bacpy(¶ms
->addr
, addr
);
3488 params
->addr_type
= addr_type
;
3490 list_add(¶ms
->list
, &hdev
->le_conn_params
);
3491 INIT_LIST_HEAD(¶ms
->action
);
3493 params
->conn_min_interval
= hdev
->le_conn_min_interval
;
3494 params
->conn_max_interval
= hdev
->le_conn_max_interval
;
3495 params
->conn_latency
= hdev
->le_conn_latency
;
3496 params
->supervision_timeout
= hdev
->le_supv_timeout
;
3497 params
->auto_connect
= HCI_AUTO_CONN_DISABLED
;
3499 BT_DBG("addr %pMR (type %u)", addr
, addr_type
);
3504 /* This function requires the caller holds hdev->lock */
3505 int hci_conn_params_set(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
,
3508 struct hci_conn_params
*params
;
3510 params
= hci_conn_params_add(hdev
, addr
, addr_type
);
3514 if (params
->auto_connect
== auto_connect
)
3517 list_del_init(¶ms
->action
);
3519 switch (auto_connect
) {
3520 case HCI_AUTO_CONN_DISABLED
:
3521 case HCI_AUTO_CONN_LINK_LOSS
:
3522 hci_update_background_scan(hdev
);
3524 case HCI_AUTO_CONN_REPORT
:
3525 list_add(¶ms
->action
, &hdev
->pend_le_reports
);
3526 hci_update_background_scan(hdev
);
3528 case HCI_AUTO_CONN_ALWAYS
:
3529 if (!is_connected(hdev
, addr
, addr_type
)) {
3530 list_add(¶ms
->action
, &hdev
->pend_le_conns
);
3531 hci_update_background_scan(hdev
);
3536 params
->auto_connect
= auto_connect
;
3538 BT_DBG("addr %pMR (type %u) auto_connect %u", addr
, addr_type
,
3544 /* This function requires the caller holds hdev->lock */
3545 void hci_conn_params_del(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
)
3547 struct hci_conn_params
*params
;
3549 params
= hci_conn_params_lookup(hdev
, addr
, addr_type
);
3553 list_del(¶ms
->action
);
3554 list_del(¶ms
->list
);
3557 hci_update_background_scan(hdev
);
3559 BT_DBG("addr %pMR (type %u)", addr
, addr_type
);
3562 /* This function requires the caller holds hdev->lock */
3563 void hci_conn_params_clear_disabled(struct hci_dev
*hdev
)
3565 struct hci_conn_params
*params
, *tmp
;
3567 list_for_each_entry_safe(params
, tmp
, &hdev
->le_conn_params
, list
) {
3568 if (params
->auto_connect
!= HCI_AUTO_CONN_DISABLED
)
3570 list_del(¶ms
->list
);
3574 BT_DBG("All LE disabled connection parameters were removed");
3577 /* This function requires the caller holds hdev->lock */
3578 void hci_conn_params_clear_enabled(struct hci_dev
*hdev
)
3580 struct hci_conn_params
*params
, *tmp
;
3582 list_for_each_entry_safe(params
, tmp
, &hdev
->le_conn_params
, list
) {
3583 if (params
->auto_connect
== HCI_AUTO_CONN_DISABLED
)
3585 list_del(¶ms
->action
);
3586 list_del(¶ms
->list
);
3590 hci_update_background_scan(hdev
);
3592 BT_DBG("All enabled LE connection parameters were removed");
3595 /* This function requires the caller holds hdev->lock */
3596 void hci_conn_params_clear_all(struct hci_dev
*hdev
)
3598 struct hci_conn_params
*params
, *tmp
;
3600 list_for_each_entry_safe(params
, tmp
, &hdev
->le_conn_params
, list
) {
3601 list_del(¶ms
->action
);
3602 list_del(¶ms
->list
);
3606 hci_update_background_scan(hdev
);
3608 BT_DBG("All LE connection parameters were removed");
3611 static void inquiry_complete(struct hci_dev
*hdev
, u8 status
)
3614 BT_ERR("Failed to start inquiry: status %d", status
);
3617 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3618 hci_dev_unlock(hdev
);
3623 static void le_scan_disable_work_complete(struct hci_dev
*hdev
, u8 status
)
3625 /* General inquiry access code (GIAC) */
3626 u8 lap
[3] = { 0x33, 0x8b, 0x9e };
3627 struct hci_request req
;
3628 struct hci_cp_inquiry cp
;
3632 BT_ERR("Failed to disable LE scanning: status %d", status
);
3636 switch (hdev
->discovery
.type
) {
3637 case DISCOV_TYPE_LE
:
3639 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3640 hci_dev_unlock(hdev
);
3643 case DISCOV_TYPE_INTERLEAVED
:
3644 hci_req_init(&req
, hdev
);
3646 memset(&cp
, 0, sizeof(cp
));
3647 memcpy(&cp
.lap
, lap
, sizeof(cp
.lap
));
3648 cp
.length
= DISCOV_INTERLEAVED_INQUIRY_LEN
;
3649 hci_req_add(&req
, HCI_OP_INQUIRY
, sizeof(cp
), &cp
);
3653 hci_inquiry_cache_flush(hdev
);
3655 err
= hci_req_run(&req
, inquiry_complete
);
3657 BT_ERR("Inquiry request failed: err %d", err
);
3658 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3661 hci_dev_unlock(hdev
);
3666 static void le_scan_disable_work(struct work_struct
*work
)
3668 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
,
3669 le_scan_disable
.work
);
3670 struct hci_request req
;
3673 BT_DBG("%s", hdev
->name
);
3675 hci_req_init(&req
, hdev
);
3677 hci_req_add_le_scan_disable(&req
);
3679 err
= hci_req_run(&req
, le_scan_disable_work_complete
);
3681 BT_ERR("Disable LE scanning request failed: err %d", err
);
3684 static void set_random_addr(struct hci_request
*req
, bdaddr_t
*rpa
)
3686 struct hci_dev
*hdev
= req
->hdev
;
3688 /* If we're advertising or initiating an LE connection we can't
3689 * go ahead and change the random address at this time. This is
3690 * because the eventual initiator address used for the
3691 * subsequently created connection will be undefined (some
3692 * controllers use the new address and others the one we had
3693 * when the operation started).
3695 * In this kind of scenario skip the update and let the random
3696 * address be updated at the next cycle.
3698 if (test_bit(HCI_ADVERTISING
, &hdev
->dev_flags
) ||
3699 hci_conn_hash_lookup_state(hdev
, LE_LINK
, BT_CONNECT
)) {
3700 BT_DBG("Deferring random address update");
3704 hci_req_add(req
, HCI_OP_LE_SET_RANDOM_ADDR
, 6, rpa
);
3707 int hci_update_random_address(struct hci_request
*req
, bool require_privacy
,
3710 struct hci_dev
*hdev
= req
->hdev
;
3713 /* If privacy is enabled use a resolvable private address. If
3714 * current RPA has expired or there is something else than
3715 * the current RPA in use, then generate a new one.
3717 if (test_bit(HCI_PRIVACY
, &hdev
->dev_flags
)) {
3720 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3722 if (!test_and_clear_bit(HCI_RPA_EXPIRED
, &hdev
->dev_flags
) &&
3723 !bacmp(&hdev
->random_addr
, &hdev
->rpa
))
3726 err
= smp_generate_rpa(hdev
->tfm_aes
, hdev
->irk
, &hdev
->rpa
);
3728 BT_ERR("%s failed to generate new RPA", hdev
->name
);
3732 set_random_addr(req
, &hdev
->rpa
);
3734 to
= msecs_to_jiffies(hdev
->rpa_timeout
* 1000);
3735 queue_delayed_work(hdev
->workqueue
, &hdev
->rpa_expired
, to
);
3740 /* In case of required privacy without resolvable private address,
3741 * use an unresolvable private address. This is useful for active
3742 * scanning and non-connectable advertising.
3744 if (require_privacy
) {
3747 get_random_bytes(&urpa
, 6);
3748 urpa
.b
[5] &= 0x3f; /* Clear two most significant bits */
3750 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3751 set_random_addr(req
, &urpa
);
3755 /* If forcing static address is in use or there is no public
3756 * address use the static address as random address (but skip
3757 * the HCI command if the current random address is already the
3760 if (test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dbg_flags
) ||
3761 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
)) {
3762 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3763 if (bacmp(&hdev
->static_addr
, &hdev
->random_addr
))
3764 hci_req_add(req
, HCI_OP_LE_SET_RANDOM_ADDR
, 6,
3765 &hdev
->static_addr
);
3769 /* Neither privacy nor static address is being used so use a
3772 *own_addr_type
= ADDR_LE_DEV_PUBLIC
;
3777 /* Copy the Identity Address of the controller.
3779 * If the controller has a public BD_ADDR, then by default use that one.
3780 * If this is a LE only controller without a public address, default to
3781 * the static random address.
3783 * For debugging purposes it is possible to force controllers with a
3784 * public address to use the static random address instead.
3786 void hci_copy_identity_address(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3789 if (test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dbg_flags
) ||
3790 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
)) {
3791 bacpy(bdaddr
, &hdev
->static_addr
);
3792 *bdaddr_type
= ADDR_LE_DEV_RANDOM
;
3794 bacpy(bdaddr
, &hdev
->bdaddr
);
3795 *bdaddr_type
= ADDR_LE_DEV_PUBLIC
;
3799 /* Alloc HCI device */
3800 struct hci_dev
*hci_alloc_dev(void)
3802 struct hci_dev
*hdev
;
3804 hdev
= kzalloc(sizeof(struct hci_dev
), GFP_KERNEL
);
3808 hdev
->pkt_type
= (HCI_DM1
| HCI_DH1
| HCI_HV1
);
3809 hdev
->esco_type
= (ESCO_HV1
);
3810 hdev
->link_mode
= (HCI_LM_ACCEPT
);
3811 hdev
->num_iac
= 0x01; /* One IAC support is mandatory */
3812 hdev
->io_capability
= 0x03; /* No Input No Output */
3813 hdev
->manufacturer
= 0xffff; /* Default to internal use */
3814 hdev
->inq_tx_power
= HCI_TX_POWER_INVALID
;
3815 hdev
->adv_tx_power
= HCI_TX_POWER_INVALID
;
3817 hdev
->sniff_max_interval
= 800;
3818 hdev
->sniff_min_interval
= 80;
3820 hdev
->le_adv_channel_map
= 0x07;
3821 hdev
->le_scan_interval
= 0x0060;
3822 hdev
->le_scan_window
= 0x0030;
3823 hdev
->le_conn_min_interval
= 0x0028;
3824 hdev
->le_conn_max_interval
= 0x0038;
3825 hdev
->le_conn_latency
= 0x0000;
3826 hdev
->le_supv_timeout
= 0x002a;
3828 hdev
->rpa_timeout
= HCI_DEFAULT_RPA_TIMEOUT
;
3829 hdev
->discov_interleaved_timeout
= DISCOV_INTERLEAVED_TIMEOUT
;
3830 hdev
->conn_info_min_age
= DEFAULT_CONN_INFO_MIN_AGE
;
3831 hdev
->conn_info_max_age
= DEFAULT_CONN_INFO_MAX_AGE
;
3833 mutex_init(&hdev
->lock
);
3834 mutex_init(&hdev
->req_lock
);
3836 INIT_LIST_HEAD(&hdev
->mgmt_pending
);
3837 INIT_LIST_HEAD(&hdev
->blacklist
);
3838 INIT_LIST_HEAD(&hdev
->uuids
);
3839 INIT_LIST_HEAD(&hdev
->link_keys
);
3840 INIT_LIST_HEAD(&hdev
->long_term_keys
);
3841 INIT_LIST_HEAD(&hdev
->identity_resolving_keys
);
3842 INIT_LIST_HEAD(&hdev
->remote_oob_data
);
3843 INIT_LIST_HEAD(&hdev
->le_white_list
);
3844 INIT_LIST_HEAD(&hdev
->le_conn_params
);
3845 INIT_LIST_HEAD(&hdev
->pend_le_conns
);
3846 INIT_LIST_HEAD(&hdev
->pend_le_reports
);
3847 INIT_LIST_HEAD(&hdev
->conn_hash
.list
);
3849 INIT_WORK(&hdev
->rx_work
, hci_rx_work
);
3850 INIT_WORK(&hdev
->cmd_work
, hci_cmd_work
);
3851 INIT_WORK(&hdev
->tx_work
, hci_tx_work
);
3852 INIT_WORK(&hdev
->power_on
, hci_power_on
);
3854 INIT_DELAYED_WORK(&hdev
->power_off
, hci_power_off
);
3855 INIT_DELAYED_WORK(&hdev
->discov_off
, hci_discov_off
);
3856 INIT_DELAYED_WORK(&hdev
->le_scan_disable
, le_scan_disable_work
);
3858 skb_queue_head_init(&hdev
->rx_q
);
3859 skb_queue_head_init(&hdev
->cmd_q
);
3860 skb_queue_head_init(&hdev
->raw_q
);
3862 init_waitqueue_head(&hdev
->req_wait_q
);
3864 INIT_DELAYED_WORK(&hdev
->cmd_timer
, hci_cmd_timeout
);
3866 hci_init_sysfs(hdev
);
3867 discovery_init(hdev
);
3871 EXPORT_SYMBOL(hci_alloc_dev
);
3873 /* Free HCI device */
3874 void hci_free_dev(struct hci_dev
*hdev
)
3876 /* will free via device release */
3877 put_device(&hdev
->dev
);
3879 EXPORT_SYMBOL(hci_free_dev
);
3881 /* Register HCI device */
3882 int hci_register_dev(struct hci_dev
*hdev
)
3886 if (!hdev
->open
|| !hdev
->close
)
3889 /* Do not allow HCI_AMP devices to register at index 0,
3890 * so the index can be used as the AMP controller ID.
3892 switch (hdev
->dev_type
) {
3894 id
= ida_simple_get(&hci_index_ida
, 0, 0, GFP_KERNEL
);
3897 id
= ida_simple_get(&hci_index_ida
, 1, 0, GFP_KERNEL
);
3906 sprintf(hdev
->name
, "hci%d", id
);
3909 BT_DBG("%p name %s bus %d", hdev
, hdev
->name
, hdev
->bus
);
3911 hdev
->workqueue
= alloc_workqueue("%s", WQ_HIGHPRI
| WQ_UNBOUND
|
3912 WQ_MEM_RECLAIM
, 1, hdev
->name
);
3913 if (!hdev
->workqueue
) {
3918 hdev
->req_workqueue
= alloc_workqueue("%s", WQ_HIGHPRI
| WQ_UNBOUND
|
3919 WQ_MEM_RECLAIM
, 1, hdev
->name
);
3920 if (!hdev
->req_workqueue
) {
3921 destroy_workqueue(hdev
->workqueue
);
3926 if (!IS_ERR_OR_NULL(bt_debugfs
))
3927 hdev
->debugfs
= debugfs_create_dir(hdev
->name
, bt_debugfs
);
3929 dev_set_name(&hdev
->dev
, "%s", hdev
->name
);
3931 hdev
->tfm_aes
= crypto_alloc_blkcipher("ecb(aes)", 0,
3933 if (IS_ERR(hdev
->tfm_aes
)) {
3934 BT_ERR("Unable to create crypto context");
3935 error
= PTR_ERR(hdev
->tfm_aes
);
3936 hdev
->tfm_aes
= NULL
;
3940 error
= device_add(&hdev
->dev
);
3944 hdev
->rfkill
= rfkill_alloc(hdev
->name
, &hdev
->dev
,
3945 RFKILL_TYPE_BLUETOOTH
, &hci_rfkill_ops
,
3948 if (rfkill_register(hdev
->rfkill
) < 0) {
3949 rfkill_destroy(hdev
->rfkill
);
3950 hdev
->rfkill
= NULL
;
3954 if (hdev
->rfkill
&& rfkill_blocked(hdev
->rfkill
))
3955 set_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
3957 set_bit(HCI_SETUP
, &hdev
->dev_flags
);
3958 set_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
);
3960 if (hdev
->dev_type
== HCI_BREDR
) {
3961 /* Assume BR/EDR support until proven otherwise (such as
3962 * through reading supported features during init.
3964 set_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
);
3967 write_lock(&hci_dev_list_lock
);
3968 list_add(&hdev
->list
, &hci_dev_list
);
3969 write_unlock(&hci_dev_list_lock
);
3971 /* Devices that are marked for raw-only usage are unconfigured
3972 * and should not be included in normal operation.
3974 if (test_bit(HCI_QUIRK_RAW_DEVICE
, &hdev
->quirks
))
3975 set_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
);
3977 hci_notify(hdev
, HCI_DEV_REG
);
3980 queue_work(hdev
->req_workqueue
, &hdev
->power_on
);
3985 crypto_free_blkcipher(hdev
->tfm_aes
);
3987 destroy_workqueue(hdev
->workqueue
);
3988 destroy_workqueue(hdev
->req_workqueue
);
3990 ida_simple_remove(&hci_index_ida
, hdev
->id
);
3994 EXPORT_SYMBOL(hci_register_dev
);
3996 /* Unregister HCI device */
3997 void hci_unregister_dev(struct hci_dev
*hdev
)
4001 BT_DBG("%p name %s bus %d", hdev
, hdev
->name
, hdev
->bus
);
4003 set_bit(HCI_UNREGISTER
, &hdev
->dev_flags
);
4007 write_lock(&hci_dev_list_lock
);
4008 list_del(&hdev
->list
);
4009 write_unlock(&hci_dev_list_lock
);
4011 hci_dev_do_close(hdev
);
4013 for (i
= 0; i
< NUM_REASSEMBLY
; i
++)
4014 kfree_skb(hdev
->reassembly
[i
]);
4016 cancel_work_sync(&hdev
->power_on
);
4018 if (!test_bit(HCI_INIT
, &hdev
->flags
) &&
4019 !test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
4021 mgmt_index_removed(hdev
);
4022 hci_dev_unlock(hdev
);
4025 /* mgmt_index_removed should take care of emptying the
4027 BUG_ON(!list_empty(&hdev
->mgmt_pending
));
4029 hci_notify(hdev
, HCI_DEV_UNREG
);
4032 rfkill_unregister(hdev
->rfkill
);
4033 rfkill_destroy(hdev
->rfkill
);
4037 crypto_free_blkcipher(hdev
->tfm_aes
);
4039 device_del(&hdev
->dev
);
4041 debugfs_remove_recursive(hdev
->debugfs
);
4043 destroy_workqueue(hdev
->workqueue
);
4044 destroy_workqueue(hdev
->req_workqueue
);
4047 hci_blacklist_clear(hdev
);
4048 hci_uuids_clear(hdev
);
4049 hci_link_keys_clear(hdev
);
4050 hci_smp_ltks_clear(hdev
);
4051 hci_smp_irks_clear(hdev
);
4052 hci_remote_oob_data_clear(hdev
);
4053 hci_white_list_clear(hdev
);
4054 hci_conn_params_clear_all(hdev
);
4055 hci_dev_unlock(hdev
);
4059 ida_simple_remove(&hci_index_ida
, id
);
4061 EXPORT_SYMBOL(hci_unregister_dev
);
4063 /* Suspend HCI device */
4064 int hci_suspend_dev(struct hci_dev
*hdev
)
4066 hci_notify(hdev
, HCI_DEV_SUSPEND
);
4069 EXPORT_SYMBOL(hci_suspend_dev
);
4071 /* Resume HCI device */
4072 int hci_resume_dev(struct hci_dev
*hdev
)
4074 hci_notify(hdev
, HCI_DEV_RESUME
);
4077 EXPORT_SYMBOL(hci_resume_dev
);
4079 /* Receive frame from HCI drivers */
4080 int hci_recv_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4082 if (!hdev
|| (!test_bit(HCI_UP
, &hdev
->flags
)
4083 && !test_bit(HCI_INIT
, &hdev
->flags
))) {
4089 bt_cb(skb
)->incoming
= 1;
4092 __net_timestamp(skb
);
4094 skb_queue_tail(&hdev
->rx_q
, skb
);
4095 queue_work(hdev
->workqueue
, &hdev
->rx_work
);
4099 EXPORT_SYMBOL(hci_recv_frame
);
4101 static int hci_reassembly(struct hci_dev
*hdev
, int type
, void *data
,
4102 int count
, __u8 index
)
4107 struct sk_buff
*skb
;
4108 struct bt_skb_cb
*scb
;
4110 if ((type
< HCI_ACLDATA_PKT
|| type
> HCI_EVENT_PKT
) ||
4111 index
>= NUM_REASSEMBLY
)
4114 skb
= hdev
->reassembly
[index
];
4118 case HCI_ACLDATA_PKT
:
4119 len
= HCI_MAX_FRAME_SIZE
;
4120 hlen
= HCI_ACL_HDR_SIZE
;
4123 len
= HCI_MAX_EVENT_SIZE
;
4124 hlen
= HCI_EVENT_HDR_SIZE
;
4126 case HCI_SCODATA_PKT
:
4127 len
= HCI_MAX_SCO_SIZE
;
4128 hlen
= HCI_SCO_HDR_SIZE
;
4132 skb
= bt_skb_alloc(len
, GFP_ATOMIC
);
4136 scb
= (void *) skb
->cb
;
4138 scb
->pkt_type
= type
;
4140 hdev
->reassembly
[index
] = skb
;
4144 scb
= (void *) skb
->cb
;
4145 len
= min_t(uint
, scb
->expect
, count
);
4147 memcpy(skb_put(skb
, len
), data
, len
);
4156 if (skb
->len
== HCI_EVENT_HDR_SIZE
) {
4157 struct hci_event_hdr
*h
= hci_event_hdr(skb
);
4158 scb
->expect
= h
->plen
;
4160 if (skb_tailroom(skb
) < scb
->expect
) {
4162 hdev
->reassembly
[index
] = NULL
;
4168 case HCI_ACLDATA_PKT
:
4169 if (skb
->len
== HCI_ACL_HDR_SIZE
) {
4170 struct hci_acl_hdr
*h
= hci_acl_hdr(skb
);
4171 scb
->expect
= __le16_to_cpu(h
->dlen
);
4173 if (skb_tailroom(skb
) < scb
->expect
) {
4175 hdev
->reassembly
[index
] = NULL
;
4181 case HCI_SCODATA_PKT
:
4182 if (skb
->len
== HCI_SCO_HDR_SIZE
) {
4183 struct hci_sco_hdr
*h
= hci_sco_hdr(skb
);
4184 scb
->expect
= h
->dlen
;
4186 if (skb_tailroom(skb
) < scb
->expect
) {
4188 hdev
->reassembly
[index
] = NULL
;
4195 if (scb
->expect
== 0) {
4196 /* Complete frame */
4198 bt_cb(skb
)->pkt_type
= type
;
4199 hci_recv_frame(hdev
, skb
);
4201 hdev
->reassembly
[index
] = NULL
;
4209 int hci_recv_fragment(struct hci_dev
*hdev
, int type
, void *data
, int count
)
4213 if (type
< HCI_ACLDATA_PKT
|| type
> HCI_EVENT_PKT
)
4217 rem
= hci_reassembly(hdev
, type
, data
, count
, type
- 1);
4221 data
+= (count
- rem
);
4227 EXPORT_SYMBOL(hci_recv_fragment
);
4229 #define STREAM_REASSEMBLY 0
4231 int hci_recv_stream_fragment(struct hci_dev
*hdev
, void *data
, int count
)
4237 struct sk_buff
*skb
= hdev
->reassembly
[STREAM_REASSEMBLY
];
4240 struct { char type
; } *pkt
;
4242 /* Start of the frame */
4249 type
= bt_cb(skb
)->pkt_type
;
4251 rem
= hci_reassembly(hdev
, type
, data
, count
,
4256 data
+= (count
- rem
);
4262 EXPORT_SYMBOL(hci_recv_stream_fragment
);
4264 /* ---- Interface to upper protocols ---- */
4266 int hci_register_cb(struct hci_cb
*cb
)
4268 BT_DBG("%p name %s", cb
, cb
->name
);
4270 write_lock(&hci_cb_list_lock
);
4271 list_add(&cb
->list
, &hci_cb_list
);
4272 write_unlock(&hci_cb_list_lock
);
4276 EXPORT_SYMBOL(hci_register_cb
);
4278 int hci_unregister_cb(struct hci_cb
*cb
)
4280 BT_DBG("%p name %s", cb
, cb
->name
);
4282 write_lock(&hci_cb_list_lock
);
4283 list_del(&cb
->list
);
4284 write_unlock(&hci_cb_list_lock
);
4288 EXPORT_SYMBOL(hci_unregister_cb
);
4290 static void hci_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4292 BT_DBG("%s type %d len %d", hdev
->name
, bt_cb(skb
)->pkt_type
, skb
->len
);
4295 __net_timestamp(skb
);
4297 /* Send copy to monitor */
4298 hci_send_to_monitor(hdev
, skb
);
4300 if (atomic_read(&hdev
->promisc
)) {
4301 /* Send copy to the sockets */
4302 hci_send_to_sock(hdev
, skb
);
4305 /* Get rid of skb owner, prior to sending to the driver. */
4308 if (hdev
->send(hdev
, skb
) < 0)
4309 BT_ERR("%s sending frame failed", hdev
->name
);
4312 void hci_req_init(struct hci_request
*req
, struct hci_dev
*hdev
)
4314 skb_queue_head_init(&req
->cmd_q
);
4319 int hci_req_run(struct hci_request
*req
, hci_req_complete_t complete
)
4321 struct hci_dev
*hdev
= req
->hdev
;
4322 struct sk_buff
*skb
;
4323 unsigned long flags
;
4325 BT_DBG("length %u", skb_queue_len(&req
->cmd_q
));
4327 /* If an error occured during request building, remove all HCI
4328 * commands queued on the HCI request queue.
4331 skb_queue_purge(&req
->cmd_q
);
4335 /* Do not allow empty requests */
4336 if (skb_queue_empty(&req
->cmd_q
))
4339 skb
= skb_peek_tail(&req
->cmd_q
);
4340 bt_cb(skb
)->req
.complete
= complete
;
4342 spin_lock_irqsave(&hdev
->cmd_q
.lock
, flags
);
4343 skb_queue_splice_tail(&req
->cmd_q
, &hdev
->cmd_q
);
4344 spin_unlock_irqrestore(&hdev
->cmd_q
.lock
, flags
);
4346 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
4351 static struct sk_buff
*hci_prepare_cmd(struct hci_dev
*hdev
, u16 opcode
,
4352 u32 plen
, const void *param
)
4354 int len
= HCI_COMMAND_HDR_SIZE
+ plen
;
4355 struct hci_command_hdr
*hdr
;
4356 struct sk_buff
*skb
;
4358 skb
= bt_skb_alloc(len
, GFP_ATOMIC
);
4362 hdr
= (struct hci_command_hdr
*) skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
4363 hdr
->opcode
= cpu_to_le16(opcode
);
4367 memcpy(skb_put(skb
, plen
), param
, plen
);
4369 BT_DBG("skb len %d", skb
->len
);
4371 bt_cb(skb
)->pkt_type
= HCI_COMMAND_PKT
;
4376 /* Send HCI command */
4377 int hci_send_cmd(struct hci_dev
*hdev
, __u16 opcode
, __u32 plen
,
4380 struct sk_buff
*skb
;
4382 BT_DBG("%s opcode 0x%4.4x plen %d", hdev
->name
, opcode
, plen
);
4384 skb
= hci_prepare_cmd(hdev
, opcode
, plen
, param
);
4386 BT_ERR("%s no memory for command", hdev
->name
);
4390 /* Stand-alone HCI commands must be flaged as
4391 * single-command requests.
4393 bt_cb(skb
)->req
.start
= true;
4395 skb_queue_tail(&hdev
->cmd_q
, skb
);
4396 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
4401 /* Queue a command to an asynchronous HCI request */
4402 void hci_req_add_ev(struct hci_request
*req
, u16 opcode
, u32 plen
,
4403 const void *param
, u8 event
)
4405 struct hci_dev
*hdev
= req
->hdev
;
4406 struct sk_buff
*skb
;
4408 BT_DBG("%s opcode 0x%4.4x plen %d", hdev
->name
, opcode
, plen
);
4410 /* If an error occured during request building, there is no point in
4411 * queueing the HCI command. We can simply return.
4416 skb
= hci_prepare_cmd(hdev
, opcode
, plen
, param
);
4418 BT_ERR("%s no memory for command (opcode 0x%4.4x)",
4419 hdev
->name
, opcode
);
4424 if (skb_queue_empty(&req
->cmd_q
))
4425 bt_cb(skb
)->req
.start
= true;
4427 bt_cb(skb
)->req
.event
= event
;
4429 skb_queue_tail(&req
->cmd_q
, skb
);
4432 void hci_req_add(struct hci_request
*req
, u16 opcode
, u32 plen
,
4435 hci_req_add_ev(req
, opcode
, plen
, param
, 0);
4438 /* Get data from the previously sent command */
4439 void *hci_sent_cmd_data(struct hci_dev
*hdev
, __u16 opcode
)
4441 struct hci_command_hdr
*hdr
;
4443 if (!hdev
->sent_cmd
)
4446 hdr
= (void *) hdev
->sent_cmd
->data
;
4448 if (hdr
->opcode
!= cpu_to_le16(opcode
))
4451 BT_DBG("%s opcode 0x%4.4x", hdev
->name
, opcode
);
4453 return hdev
->sent_cmd
->data
+ HCI_COMMAND_HDR_SIZE
;
4457 static void hci_add_acl_hdr(struct sk_buff
*skb
, __u16 handle
, __u16 flags
)
4459 struct hci_acl_hdr
*hdr
;
4462 skb_push(skb
, HCI_ACL_HDR_SIZE
);
4463 skb_reset_transport_header(skb
);
4464 hdr
= (struct hci_acl_hdr
*)skb_transport_header(skb
);
4465 hdr
->handle
= cpu_to_le16(hci_handle_pack(handle
, flags
));
4466 hdr
->dlen
= cpu_to_le16(len
);
4469 static void hci_queue_acl(struct hci_chan
*chan
, struct sk_buff_head
*queue
,
4470 struct sk_buff
*skb
, __u16 flags
)
4472 struct hci_conn
*conn
= chan
->conn
;
4473 struct hci_dev
*hdev
= conn
->hdev
;
4474 struct sk_buff
*list
;
4476 skb
->len
= skb_headlen(skb
);
4479 bt_cb(skb
)->pkt_type
= HCI_ACLDATA_PKT
;
4481 switch (hdev
->dev_type
) {
4483 hci_add_acl_hdr(skb
, conn
->handle
, flags
);
4486 hci_add_acl_hdr(skb
, chan
->handle
, flags
);
4489 BT_ERR("%s unknown dev_type %d", hdev
->name
, hdev
->dev_type
);
4493 list
= skb_shinfo(skb
)->frag_list
;
4495 /* Non fragmented */
4496 BT_DBG("%s nonfrag skb %p len %d", hdev
->name
, skb
, skb
->len
);
4498 skb_queue_tail(queue
, skb
);
4501 BT_DBG("%s frag %p len %d", hdev
->name
, skb
, skb
->len
);
4503 skb_shinfo(skb
)->frag_list
= NULL
;
4505 /* Queue all fragments atomically */
4506 spin_lock(&queue
->lock
);
4508 __skb_queue_tail(queue
, skb
);
4510 flags
&= ~ACL_START
;
4513 skb
= list
; list
= list
->next
;
4515 bt_cb(skb
)->pkt_type
= HCI_ACLDATA_PKT
;
4516 hci_add_acl_hdr(skb
, conn
->handle
, flags
);
4518 BT_DBG("%s frag %p len %d", hdev
->name
, skb
, skb
->len
);
4520 __skb_queue_tail(queue
, skb
);
4523 spin_unlock(&queue
->lock
);
4527 void hci_send_acl(struct hci_chan
*chan
, struct sk_buff
*skb
, __u16 flags
)
4529 struct hci_dev
*hdev
= chan
->conn
->hdev
;
4531 BT_DBG("%s chan %p flags 0x%4.4x", hdev
->name
, chan
, flags
);
4533 hci_queue_acl(chan
, &chan
->data_q
, skb
, flags
);
4535 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
4539 void hci_send_sco(struct hci_conn
*conn
, struct sk_buff
*skb
)
4541 struct hci_dev
*hdev
= conn
->hdev
;
4542 struct hci_sco_hdr hdr
;
4544 BT_DBG("%s len %d", hdev
->name
, skb
->len
);
4546 hdr
.handle
= cpu_to_le16(conn
->handle
);
4547 hdr
.dlen
= skb
->len
;
4549 skb_push(skb
, HCI_SCO_HDR_SIZE
);
4550 skb_reset_transport_header(skb
);
4551 memcpy(skb_transport_header(skb
), &hdr
, HCI_SCO_HDR_SIZE
);
4553 bt_cb(skb
)->pkt_type
= HCI_SCODATA_PKT
;
4555 skb_queue_tail(&conn
->data_q
, skb
);
4556 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
4559 /* ---- HCI TX task (outgoing data) ---- */
4561 /* HCI Connection scheduler */
4562 static struct hci_conn
*hci_low_sent(struct hci_dev
*hdev
, __u8 type
,
4565 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4566 struct hci_conn
*conn
= NULL
, *c
;
4567 unsigned int num
= 0, min
= ~0;
4569 /* We don't have to lock device here. Connections are always
4570 * added and removed with TX task disabled. */
4574 list_for_each_entry_rcu(c
, &h
->list
, list
) {
4575 if (c
->type
!= type
|| skb_queue_empty(&c
->data_q
))
4578 if (c
->state
!= BT_CONNECTED
&& c
->state
!= BT_CONFIG
)
4583 if (c
->sent
< min
) {
4588 if (hci_conn_num(hdev
, type
) == num
)
4597 switch (conn
->type
) {
4599 cnt
= hdev
->acl_cnt
;
4603 cnt
= hdev
->sco_cnt
;
4606 cnt
= hdev
->le_mtu
? hdev
->le_cnt
: hdev
->acl_cnt
;
4610 BT_ERR("Unknown link type");
4618 BT_DBG("conn %p quote %d", conn
, *quote
);
4622 static void hci_link_tx_to(struct hci_dev
*hdev
, __u8 type
)
4624 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4627 BT_ERR("%s link tx timeout", hdev
->name
);
4631 /* Kill stalled connections */
4632 list_for_each_entry_rcu(c
, &h
->list
, list
) {
4633 if (c
->type
== type
&& c
->sent
) {
4634 BT_ERR("%s killing stalled connection %pMR",
4635 hdev
->name
, &c
->dst
);
4636 hci_disconnect(c
, HCI_ERROR_REMOTE_USER_TERM
);
4643 static struct hci_chan
*hci_chan_sent(struct hci_dev
*hdev
, __u8 type
,
4646 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4647 struct hci_chan
*chan
= NULL
;
4648 unsigned int num
= 0, min
= ~0, cur_prio
= 0;
4649 struct hci_conn
*conn
;
4650 int cnt
, q
, conn_num
= 0;
4652 BT_DBG("%s", hdev
->name
);
4656 list_for_each_entry_rcu(conn
, &h
->list
, list
) {
4657 struct hci_chan
*tmp
;
4659 if (conn
->type
!= type
)
4662 if (conn
->state
!= BT_CONNECTED
&& conn
->state
!= BT_CONFIG
)
4667 list_for_each_entry_rcu(tmp
, &conn
->chan_list
, list
) {
4668 struct sk_buff
*skb
;
4670 if (skb_queue_empty(&tmp
->data_q
))
4673 skb
= skb_peek(&tmp
->data_q
);
4674 if (skb
->priority
< cur_prio
)
4677 if (skb
->priority
> cur_prio
) {
4680 cur_prio
= skb
->priority
;
4685 if (conn
->sent
< min
) {
4691 if (hci_conn_num(hdev
, type
) == conn_num
)
4700 switch (chan
->conn
->type
) {
4702 cnt
= hdev
->acl_cnt
;
4705 cnt
= hdev
->block_cnt
;
4709 cnt
= hdev
->sco_cnt
;
4712 cnt
= hdev
->le_mtu
? hdev
->le_cnt
: hdev
->acl_cnt
;
4716 BT_ERR("Unknown link type");
4721 BT_DBG("chan %p quote %d", chan
, *quote
);
4725 static void hci_prio_recalculate(struct hci_dev
*hdev
, __u8 type
)
4727 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4728 struct hci_conn
*conn
;
4731 BT_DBG("%s", hdev
->name
);
4735 list_for_each_entry_rcu(conn
, &h
->list
, list
) {
4736 struct hci_chan
*chan
;
4738 if (conn
->type
!= type
)
4741 if (conn
->state
!= BT_CONNECTED
&& conn
->state
!= BT_CONFIG
)
4746 list_for_each_entry_rcu(chan
, &conn
->chan_list
, list
) {
4747 struct sk_buff
*skb
;
4754 if (skb_queue_empty(&chan
->data_q
))
4757 skb
= skb_peek(&chan
->data_q
);
4758 if (skb
->priority
>= HCI_PRIO_MAX
- 1)
4761 skb
->priority
= HCI_PRIO_MAX
- 1;
4763 BT_DBG("chan %p skb %p promoted to %d", chan
, skb
,
4767 if (hci_conn_num(hdev
, type
) == num
)
4775 static inline int __get_blocks(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4777 /* Calculate count of blocks used by this packet */
4778 return DIV_ROUND_UP(skb
->len
- HCI_ACL_HDR_SIZE
, hdev
->block_len
);
4781 static void __check_timeout(struct hci_dev
*hdev
, unsigned int cnt
)
4783 if (!test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
4784 /* ACL tx timeout must be longer than maximum
4785 * link supervision timeout (40.9 seconds) */
4786 if (!cnt
&& time_after(jiffies
, hdev
->acl_last_tx
+
4787 HCI_ACL_TX_TIMEOUT
))
4788 hci_link_tx_to(hdev
, ACL_LINK
);
4792 static void hci_sched_acl_pkt(struct hci_dev
*hdev
)
4794 unsigned int cnt
= hdev
->acl_cnt
;
4795 struct hci_chan
*chan
;
4796 struct sk_buff
*skb
;
4799 __check_timeout(hdev
, cnt
);
4801 while (hdev
->acl_cnt
&&
4802 (chan
= hci_chan_sent(hdev
, ACL_LINK
, "e
))) {
4803 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4804 while (quote
-- && (skb
= skb_peek(&chan
->data_q
))) {
4805 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4806 skb
->len
, skb
->priority
);
4808 /* Stop if priority has changed */
4809 if (skb
->priority
< priority
)
4812 skb
= skb_dequeue(&chan
->data_q
);
4814 hci_conn_enter_active_mode(chan
->conn
,
4815 bt_cb(skb
)->force_active
);
4817 hci_send_frame(hdev
, skb
);
4818 hdev
->acl_last_tx
= jiffies
;
4826 if (cnt
!= hdev
->acl_cnt
)
4827 hci_prio_recalculate(hdev
, ACL_LINK
);
4830 static void hci_sched_acl_blk(struct hci_dev
*hdev
)
4832 unsigned int cnt
= hdev
->block_cnt
;
4833 struct hci_chan
*chan
;
4834 struct sk_buff
*skb
;
4838 __check_timeout(hdev
, cnt
);
4840 BT_DBG("%s", hdev
->name
);
4842 if (hdev
->dev_type
== HCI_AMP
)
4847 while (hdev
->block_cnt
> 0 &&
4848 (chan
= hci_chan_sent(hdev
, type
, "e
))) {
4849 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4850 while (quote
> 0 && (skb
= skb_peek(&chan
->data_q
))) {
4853 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4854 skb
->len
, skb
->priority
);
4856 /* Stop if priority has changed */
4857 if (skb
->priority
< priority
)
4860 skb
= skb_dequeue(&chan
->data_q
);
4862 blocks
= __get_blocks(hdev
, skb
);
4863 if (blocks
> hdev
->block_cnt
)
4866 hci_conn_enter_active_mode(chan
->conn
,
4867 bt_cb(skb
)->force_active
);
4869 hci_send_frame(hdev
, skb
);
4870 hdev
->acl_last_tx
= jiffies
;
4872 hdev
->block_cnt
-= blocks
;
4875 chan
->sent
+= blocks
;
4876 chan
->conn
->sent
+= blocks
;
4880 if (cnt
!= hdev
->block_cnt
)
4881 hci_prio_recalculate(hdev
, type
);
4884 static void hci_sched_acl(struct hci_dev
*hdev
)
4886 BT_DBG("%s", hdev
->name
);
4888 /* No ACL link over BR/EDR controller */
4889 if (!hci_conn_num(hdev
, ACL_LINK
) && hdev
->dev_type
== HCI_BREDR
)
4892 /* No AMP link over AMP controller */
4893 if (!hci_conn_num(hdev
, AMP_LINK
) && hdev
->dev_type
== HCI_AMP
)
4896 switch (hdev
->flow_ctl_mode
) {
4897 case HCI_FLOW_CTL_MODE_PACKET_BASED
:
4898 hci_sched_acl_pkt(hdev
);
4901 case HCI_FLOW_CTL_MODE_BLOCK_BASED
:
4902 hci_sched_acl_blk(hdev
);
4908 static void hci_sched_sco(struct hci_dev
*hdev
)
4910 struct hci_conn
*conn
;
4911 struct sk_buff
*skb
;
4914 BT_DBG("%s", hdev
->name
);
4916 if (!hci_conn_num(hdev
, SCO_LINK
))
4919 while (hdev
->sco_cnt
&& (conn
= hci_low_sent(hdev
, SCO_LINK
, "e
))) {
4920 while (quote
-- && (skb
= skb_dequeue(&conn
->data_q
))) {
4921 BT_DBG("skb %p len %d", skb
, skb
->len
);
4922 hci_send_frame(hdev
, skb
);
4925 if (conn
->sent
== ~0)
4931 static void hci_sched_esco(struct hci_dev
*hdev
)
4933 struct hci_conn
*conn
;
4934 struct sk_buff
*skb
;
4937 BT_DBG("%s", hdev
->name
);
4939 if (!hci_conn_num(hdev
, ESCO_LINK
))
4942 while (hdev
->sco_cnt
&& (conn
= hci_low_sent(hdev
, ESCO_LINK
,
4944 while (quote
-- && (skb
= skb_dequeue(&conn
->data_q
))) {
4945 BT_DBG("skb %p len %d", skb
, skb
->len
);
4946 hci_send_frame(hdev
, skb
);
4949 if (conn
->sent
== ~0)
4955 static void hci_sched_le(struct hci_dev
*hdev
)
4957 struct hci_chan
*chan
;
4958 struct sk_buff
*skb
;
4959 int quote
, cnt
, tmp
;
4961 BT_DBG("%s", hdev
->name
);
4963 if (!hci_conn_num(hdev
, LE_LINK
))
4966 if (!test_bit(HCI_UNCONFIGURED
, &hdev
->dev_flags
)) {
4967 /* LE tx timeout must be longer than maximum
4968 * link supervision timeout (40.9 seconds) */
4969 if (!hdev
->le_cnt
&& hdev
->le_pkts
&&
4970 time_after(jiffies
, hdev
->le_last_tx
+ HZ
* 45))
4971 hci_link_tx_to(hdev
, LE_LINK
);
4974 cnt
= hdev
->le_pkts
? hdev
->le_cnt
: hdev
->acl_cnt
;
4976 while (cnt
&& (chan
= hci_chan_sent(hdev
, LE_LINK
, "e
))) {
4977 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4978 while (quote
-- && (skb
= skb_peek(&chan
->data_q
))) {
4979 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4980 skb
->len
, skb
->priority
);
4982 /* Stop if priority has changed */
4983 if (skb
->priority
< priority
)
4986 skb
= skb_dequeue(&chan
->data_q
);
4988 hci_send_frame(hdev
, skb
);
4989 hdev
->le_last_tx
= jiffies
;
5000 hdev
->acl_cnt
= cnt
;
5003 hci_prio_recalculate(hdev
, LE_LINK
);
5006 static void hci_tx_work(struct work_struct
*work
)
5008 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, tx_work
);
5009 struct sk_buff
*skb
;
5011 BT_DBG("%s acl %d sco %d le %d", hdev
->name
, hdev
->acl_cnt
,
5012 hdev
->sco_cnt
, hdev
->le_cnt
);
5014 if (!test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
5015 /* Schedule queues and send stuff to HCI driver */
5016 hci_sched_acl(hdev
);
5017 hci_sched_sco(hdev
);
5018 hci_sched_esco(hdev
);
5022 /* Send next queued raw (unknown type) packet */
5023 while ((skb
= skb_dequeue(&hdev
->raw_q
)))
5024 hci_send_frame(hdev
, skb
);
5027 /* ----- HCI RX task (incoming data processing) ----- */
5029 /* ACL data packet */
5030 static void hci_acldata_packet(struct hci_dev
*hdev
, struct sk_buff
*skb
)
5032 struct hci_acl_hdr
*hdr
= (void *) skb
->data
;
5033 struct hci_conn
*conn
;
5034 __u16 handle
, flags
;
5036 skb_pull(skb
, HCI_ACL_HDR_SIZE
);
5038 handle
= __le16_to_cpu(hdr
->handle
);
5039 flags
= hci_flags(handle
);
5040 handle
= hci_handle(handle
);
5042 BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev
->name
, skb
->len
,
5045 hdev
->stat
.acl_rx
++;
5048 conn
= hci_conn_hash_lookup_handle(hdev
, handle
);
5049 hci_dev_unlock(hdev
);
5052 hci_conn_enter_active_mode(conn
, BT_POWER_FORCE_ACTIVE_OFF
);
5054 /* Send to upper protocol */
5055 l2cap_recv_acldata(conn
, skb
, flags
);
5058 BT_ERR("%s ACL packet for unknown connection handle %d",
5059 hdev
->name
, handle
);
5065 /* SCO data packet */
5066 static void hci_scodata_packet(struct hci_dev
*hdev
, struct sk_buff
*skb
)
5068 struct hci_sco_hdr
*hdr
= (void *) skb
->data
;
5069 struct hci_conn
*conn
;
5072 skb_pull(skb
, HCI_SCO_HDR_SIZE
);
5074 handle
= __le16_to_cpu(hdr
->handle
);
5076 BT_DBG("%s len %d handle 0x%4.4x", hdev
->name
, skb
->len
, handle
);
5078 hdev
->stat
.sco_rx
++;
5081 conn
= hci_conn_hash_lookup_handle(hdev
, handle
);
5082 hci_dev_unlock(hdev
);
5085 /* Send to upper protocol */
5086 sco_recv_scodata(conn
, skb
);
5089 BT_ERR("%s SCO packet for unknown connection handle %d",
5090 hdev
->name
, handle
);
5096 static bool hci_req_is_complete(struct hci_dev
*hdev
)
5098 struct sk_buff
*skb
;
5100 skb
= skb_peek(&hdev
->cmd_q
);
5104 return bt_cb(skb
)->req
.start
;
5107 static void hci_resend_last(struct hci_dev
*hdev
)
5109 struct hci_command_hdr
*sent
;
5110 struct sk_buff
*skb
;
5113 if (!hdev
->sent_cmd
)
5116 sent
= (void *) hdev
->sent_cmd
->data
;
5117 opcode
= __le16_to_cpu(sent
->opcode
);
5118 if (opcode
== HCI_OP_RESET
)
5121 skb
= skb_clone(hdev
->sent_cmd
, GFP_KERNEL
);
5125 skb_queue_head(&hdev
->cmd_q
, skb
);
5126 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
5129 void hci_req_cmd_complete(struct hci_dev
*hdev
, u16 opcode
, u8 status
)
5131 hci_req_complete_t req_complete
= NULL
;
5132 struct sk_buff
*skb
;
5133 unsigned long flags
;
5135 BT_DBG("opcode 0x%04x status 0x%02x", opcode
, status
);
5137 /* If the completed command doesn't match the last one that was
5138 * sent we need to do special handling of it.
5140 if (!hci_sent_cmd_data(hdev
, opcode
)) {
5141 /* Some CSR based controllers generate a spontaneous
5142 * reset complete event during init and any pending
5143 * command will never be completed. In such a case we
5144 * need to resend whatever was the last sent
5147 if (test_bit(HCI_INIT
, &hdev
->flags
) && opcode
== HCI_OP_RESET
)
5148 hci_resend_last(hdev
);
5153 /* If the command succeeded and there's still more commands in
5154 * this request the request is not yet complete.
5156 if (!status
&& !hci_req_is_complete(hdev
))
5159 /* If this was the last command in a request the complete
5160 * callback would be found in hdev->sent_cmd instead of the
5161 * command queue (hdev->cmd_q).
5163 if (hdev
->sent_cmd
) {
5164 req_complete
= bt_cb(hdev
->sent_cmd
)->req
.complete
;
5167 /* We must set the complete callback to NULL to
5168 * avoid calling the callback more than once if
5169 * this function gets called again.
5171 bt_cb(hdev
->sent_cmd
)->req
.complete
= NULL
;
5177 /* Remove all pending commands belonging to this request */
5178 spin_lock_irqsave(&hdev
->cmd_q
.lock
, flags
);
5179 while ((skb
= __skb_dequeue(&hdev
->cmd_q
))) {
5180 if (bt_cb(skb
)->req
.start
) {
5181 __skb_queue_head(&hdev
->cmd_q
, skb
);
5185 req_complete
= bt_cb(skb
)->req
.complete
;
5188 spin_unlock_irqrestore(&hdev
->cmd_q
.lock
, flags
);
5192 req_complete(hdev
, status
);
5195 static void hci_rx_work(struct work_struct
*work
)
5197 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, rx_work
);
5198 struct sk_buff
*skb
;
5200 BT_DBG("%s", hdev
->name
);
5202 while ((skb
= skb_dequeue(&hdev
->rx_q
))) {
5203 /* Send copy to monitor */
5204 hci_send_to_monitor(hdev
, skb
);
5206 if (atomic_read(&hdev
->promisc
)) {
5207 /* Send copy to the sockets */
5208 hci_send_to_sock(hdev
, skb
);
5211 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
5216 if (test_bit(HCI_INIT
, &hdev
->flags
)) {
5217 /* Don't process data packets in this states. */
5218 switch (bt_cb(skb
)->pkt_type
) {
5219 case HCI_ACLDATA_PKT
:
5220 case HCI_SCODATA_PKT
:
5227 switch (bt_cb(skb
)->pkt_type
) {
5229 BT_DBG("%s Event packet", hdev
->name
);
5230 hci_event_packet(hdev
, skb
);
5233 case HCI_ACLDATA_PKT
:
5234 BT_DBG("%s ACL data packet", hdev
->name
);
5235 hci_acldata_packet(hdev
, skb
);
5238 case HCI_SCODATA_PKT
:
5239 BT_DBG("%s SCO data packet", hdev
->name
);
5240 hci_scodata_packet(hdev
, skb
);
5250 static void hci_cmd_work(struct work_struct
*work
)
5252 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, cmd_work
);
5253 struct sk_buff
*skb
;
5255 BT_DBG("%s cmd_cnt %d cmd queued %d", hdev
->name
,
5256 atomic_read(&hdev
->cmd_cnt
), skb_queue_len(&hdev
->cmd_q
));
5258 /* Send queued commands */
5259 if (atomic_read(&hdev
->cmd_cnt
)) {
5260 skb
= skb_dequeue(&hdev
->cmd_q
);
5264 kfree_skb(hdev
->sent_cmd
);
5266 hdev
->sent_cmd
= skb_clone(skb
, GFP_KERNEL
);
5267 if (hdev
->sent_cmd
) {
5268 atomic_dec(&hdev
->cmd_cnt
);
5269 hci_send_frame(hdev
, skb
);
5270 if (test_bit(HCI_RESET
, &hdev
->flags
))
5271 cancel_delayed_work(&hdev
->cmd_timer
);
5273 schedule_delayed_work(&hdev
->cmd_timer
,
5276 skb_queue_head(&hdev
->cmd_q
, skb
);
5277 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
5282 void hci_req_add_le_scan_disable(struct hci_request
*req
)
5284 struct hci_cp_le_set_scan_enable cp
;
5286 memset(&cp
, 0, sizeof(cp
));
5287 cp
.enable
= LE_SCAN_DISABLE
;
5288 hci_req_add(req
, HCI_OP_LE_SET_SCAN_ENABLE
, sizeof(cp
), &cp
);
5291 void hci_req_add_le_passive_scan(struct hci_request
*req
)
5293 struct hci_cp_le_set_scan_param param_cp
;
5294 struct hci_cp_le_set_scan_enable enable_cp
;
5295 struct hci_dev
*hdev
= req
->hdev
;
5298 /* Set require_privacy to false since no SCAN_REQ are send
5299 * during passive scanning. Not using an unresolvable address
5300 * here is important so that peer devices using direct
5301 * advertising with our address will be correctly reported
5302 * by the controller.
5304 if (hci_update_random_address(req
, false, &own_addr_type
))
5307 memset(¶m_cp
, 0, sizeof(param_cp
));
5308 param_cp
.type
= LE_SCAN_PASSIVE
;
5309 param_cp
.interval
= cpu_to_le16(hdev
->le_scan_interval
);
5310 param_cp
.window
= cpu_to_le16(hdev
->le_scan_window
);
5311 param_cp
.own_address_type
= own_addr_type
;
5312 hci_req_add(req
, HCI_OP_LE_SET_SCAN_PARAM
, sizeof(param_cp
),
5315 memset(&enable_cp
, 0, sizeof(enable_cp
));
5316 enable_cp
.enable
= LE_SCAN_ENABLE
;
5317 enable_cp
.filter_dup
= LE_SCAN_FILTER_DUP_ENABLE
;
5318 hci_req_add(req
, HCI_OP_LE_SET_SCAN_ENABLE
, sizeof(enable_cp
),
5322 static void update_background_scan_complete(struct hci_dev
*hdev
, u8 status
)
5325 BT_DBG("HCI request failed to update background scanning: "
5326 "status 0x%2.2x", status
);
5329 /* This function controls the background scanning based on hdev->pend_le_conns
5330 * list. If there are pending LE connection we start the background scanning,
5331 * otherwise we stop it.
5333 * This function requires the caller holds hdev->lock.
5335 void hci_update_background_scan(struct hci_dev
*hdev
)
5337 struct hci_request req
;
5338 struct hci_conn
*conn
;
5341 if (!test_bit(HCI_UP
, &hdev
->flags
) ||
5342 test_bit(HCI_INIT
, &hdev
->flags
) ||
5343 test_bit(HCI_SETUP
, &hdev
->dev_flags
) ||
5344 test_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
) ||
5345 test_bit(HCI_UNREGISTER
, &hdev
->dev_flags
))
5348 hci_req_init(&req
, hdev
);
5350 if (list_empty(&hdev
->pend_le_conns
) &&
5351 list_empty(&hdev
->pend_le_reports
)) {
5352 /* If there is no pending LE connections or devices
5353 * to be scanned for, we should stop the background
5357 /* If controller is not scanning we are done. */
5358 if (!test_bit(HCI_LE_SCAN
, &hdev
->dev_flags
))
5361 hci_req_add_le_scan_disable(&req
);
5363 BT_DBG("%s stopping background scanning", hdev
->name
);
5365 /* If there is at least one pending LE connection, we should
5366 * keep the background scan running.
5369 /* If controller is connecting, we should not start scanning
5370 * since some controllers are not able to scan and connect at
5373 conn
= hci_conn_hash_lookup_state(hdev
, LE_LINK
, BT_CONNECT
);
5377 /* If controller is currently scanning, we stop it to ensure we
5378 * don't miss any advertising (due to duplicates filter).
5380 if (test_bit(HCI_LE_SCAN
, &hdev
->dev_flags
))
5381 hci_req_add_le_scan_disable(&req
);
5383 hci_req_add_le_passive_scan(&req
);
5385 BT_DBG("%s starting background scanning", hdev
->name
);
5388 err
= hci_req_run(&req
, update_background_scan_complete
);
5390 BT_ERR("Failed to run HCI request: err %d", err
);