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>
41 static void hci_rx_work(struct work_struct
*work
);
42 static void hci_cmd_work(struct work_struct
*work
);
43 static void hci_tx_work(struct work_struct
*work
);
46 LIST_HEAD(hci_dev_list
);
47 DEFINE_RWLOCK(hci_dev_list_lock
);
49 /* HCI callback list */
50 LIST_HEAD(hci_cb_list
);
51 DEFINE_RWLOCK(hci_cb_list_lock
);
53 /* HCI ID Numbering */
54 static DEFINE_IDA(hci_index_ida
);
56 /* ---- HCI notifications ---- */
58 static void hci_notify(struct hci_dev
*hdev
, int event
)
60 hci_sock_dev_event(hdev
, event
);
63 /* ---- HCI debugfs entries ---- */
65 static ssize_t
dut_mode_read(struct file
*file
, char __user
*user_buf
,
66 size_t count
, loff_t
*ppos
)
68 struct hci_dev
*hdev
= file
->private_data
;
71 buf
[0] = test_bit(HCI_DUT_MODE
, &hdev
->dev_flags
) ? 'Y': 'N';
74 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
77 static ssize_t
dut_mode_write(struct file
*file
, const char __user
*user_buf
,
78 size_t count
, loff_t
*ppos
)
80 struct hci_dev
*hdev
= file
->private_data
;
83 size_t buf_size
= min(count
, (sizeof(buf
)-1));
87 if (!test_bit(HCI_UP
, &hdev
->flags
))
90 if (copy_from_user(buf
, user_buf
, buf_size
))
94 if (strtobool(buf
, &enable
))
97 if (enable
== test_bit(HCI_DUT_MODE
, &hdev
->dev_flags
))
102 skb
= __hci_cmd_sync(hdev
, HCI_OP_ENABLE_DUT_MODE
, 0, NULL
,
105 skb
= __hci_cmd_sync(hdev
, HCI_OP_RESET
, 0, NULL
,
107 hci_req_unlock(hdev
);
112 err
= -bt_to_errno(skb
->data
[0]);
118 change_bit(HCI_DUT_MODE
, &hdev
->dev_flags
);
123 static const struct file_operations dut_mode_fops
= {
125 .read
= dut_mode_read
,
126 .write
= dut_mode_write
,
127 .llseek
= default_llseek
,
130 static int features_show(struct seq_file
*f
, void *ptr
)
132 struct hci_dev
*hdev
= f
->private;
136 for (p
= 0; p
< HCI_MAX_PAGES
&& p
<= hdev
->max_page
; p
++) {
137 seq_printf(f
, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
138 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p
,
139 hdev
->features
[p
][0], hdev
->features
[p
][1],
140 hdev
->features
[p
][2], hdev
->features
[p
][3],
141 hdev
->features
[p
][4], hdev
->features
[p
][5],
142 hdev
->features
[p
][6], hdev
->features
[p
][7]);
144 if (lmp_le_capable(hdev
))
145 seq_printf(f
, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
146 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
147 hdev
->le_features
[0], hdev
->le_features
[1],
148 hdev
->le_features
[2], hdev
->le_features
[3],
149 hdev
->le_features
[4], hdev
->le_features
[5],
150 hdev
->le_features
[6], hdev
->le_features
[7]);
151 hci_dev_unlock(hdev
);
156 static int features_open(struct inode
*inode
, struct file
*file
)
158 return single_open(file
, features_show
, inode
->i_private
);
161 static const struct file_operations features_fops
= {
162 .open
= features_open
,
165 .release
= single_release
,
168 static int blacklist_show(struct seq_file
*f
, void *p
)
170 struct hci_dev
*hdev
= f
->private;
171 struct bdaddr_list
*b
;
174 list_for_each_entry(b
, &hdev
->blacklist
, list
)
175 seq_printf(f
, "%pMR (type %u)\n", &b
->bdaddr
, b
->bdaddr_type
);
176 hci_dev_unlock(hdev
);
181 static int blacklist_open(struct inode
*inode
, struct file
*file
)
183 return single_open(file
, blacklist_show
, inode
->i_private
);
186 static const struct file_operations blacklist_fops
= {
187 .open
= blacklist_open
,
190 .release
= single_release
,
193 static int uuids_show(struct seq_file
*f
, void *p
)
195 struct hci_dev
*hdev
= f
->private;
196 struct bt_uuid
*uuid
;
199 list_for_each_entry(uuid
, &hdev
->uuids
, list
) {
202 /* The Bluetooth UUID values are stored in big endian,
203 * but with reversed byte order. So convert them into
204 * the right order for the %pUb modifier.
206 for (i
= 0; i
< 16; i
++)
207 val
[i
] = uuid
->uuid
[15 - i
];
209 seq_printf(f
, "%pUb\n", val
);
211 hci_dev_unlock(hdev
);
216 static int uuids_open(struct inode
*inode
, struct file
*file
)
218 return single_open(file
, uuids_show
, inode
->i_private
);
221 static const struct file_operations uuids_fops
= {
225 .release
= single_release
,
228 static int inquiry_cache_show(struct seq_file
*f
, void *p
)
230 struct hci_dev
*hdev
= f
->private;
231 struct discovery_state
*cache
= &hdev
->discovery
;
232 struct inquiry_entry
*e
;
236 list_for_each_entry(e
, &cache
->all
, all
) {
237 struct inquiry_data
*data
= &e
->data
;
238 seq_printf(f
, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
240 data
->pscan_rep_mode
, data
->pscan_period_mode
,
241 data
->pscan_mode
, data
->dev_class
[2],
242 data
->dev_class
[1], data
->dev_class
[0],
243 __le16_to_cpu(data
->clock_offset
),
244 data
->rssi
, data
->ssp_mode
, e
->timestamp
);
247 hci_dev_unlock(hdev
);
252 static int inquiry_cache_open(struct inode
*inode
, struct file
*file
)
254 return single_open(file
, inquiry_cache_show
, inode
->i_private
);
257 static const struct file_operations inquiry_cache_fops
= {
258 .open
= inquiry_cache_open
,
261 .release
= single_release
,
264 static int link_keys_show(struct seq_file
*f
, void *ptr
)
266 struct hci_dev
*hdev
= f
->private;
267 struct list_head
*p
, *n
;
270 list_for_each_safe(p
, n
, &hdev
->link_keys
) {
271 struct link_key
*key
= list_entry(p
, struct link_key
, list
);
272 seq_printf(f
, "%pMR %u %*phN %u\n", &key
->bdaddr
, key
->type
,
273 HCI_LINK_KEY_SIZE
, key
->val
, key
->pin_len
);
275 hci_dev_unlock(hdev
);
280 static int link_keys_open(struct inode
*inode
, struct file
*file
)
282 return single_open(file
, link_keys_show
, inode
->i_private
);
285 static const struct file_operations link_keys_fops
= {
286 .open
= link_keys_open
,
289 .release
= single_release
,
292 static int dev_class_show(struct seq_file
*f
, void *ptr
)
294 struct hci_dev
*hdev
= f
->private;
297 seq_printf(f
, "0x%.2x%.2x%.2x\n", hdev
->dev_class
[2],
298 hdev
->dev_class
[1], hdev
->dev_class
[0]);
299 hci_dev_unlock(hdev
);
304 static int dev_class_open(struct inode
*inode
, struct file
*file
)
306 return single_open(file
, dev_class_show
, inode
->i_private
);
309 static const struct file_operations dev_class_fops
= {
310 .open
= dev_class_open
,
313 .release
= single_release
,
316 static int voice_setting_get(void *data
, u64
*val
)
318 struct hci_dev
*hdev
= data
;
321 *val
= hdev
->voice_setting
;
322 hci_dev_unlock(hdev
);
327 DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops
, voice_setting_get
,
328 NULL
, "0x%4.4llx\n");
330 static int auto_accept_delay_set(void *data
, u64 val
)
332 struct hci_dev
*hdev
= data
;
335 hdev
->auto_accept_delay
= val
;
336 hci_dev_unlock(hdev
);
341 static int auto_accept_delay_get(void *data
, u64
*val
)
343 struct hci_dev
*hdev
= data
;
346 *val
= hdev
->auto_accept_delay
;
347 hci_dev_unlock(hdev
);
352 DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops
, auto_accept_delay_get
,
353 auto_accept_delay_set
, "%llu\n");
355 static int ssp_debug_mode_set(void *data
, u64 val
)
357 struct hci_dev
*hdev
= data
;
362 if (val
!= 0 && val
!= 1)
365 if (!test_bit(HCI_UP
, &hdev
->flags
))
370 skb
= __hci_cmd_sync(hdev
, HCI_OP_WRITE_SSP_DEBUG_MODE
, sizeof(mode
),
371 &mode
, HCI_CMD_TIMEOUT
);
372 hci_req_unlock(hdev
);
377 err
= -bt_to_errno(skb
->data
[0]);
384 hdev
->ssp_debug_mode
= val
;
385 hci_dev_unlock(hdev
);
390 static int ssp_debug_mode_get(void *data
, u64
*val
)
392 struct hci_dev
*hdev
= data
;
395 *val
= hdev
->ssp_debug_mode
;
396 hci_dev_unlock(hdev
);
401 DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops
, ssp_debug_mode_get
,
402 ssp_debug_mode_set
, "%llu\n");
404 static ssize_t
force_sc_support_read(struct file
*file
, char __user
*user_buf
,
405 size_t count
, loff_t
*ppos
)
407 struct hci_dev
*hdev
= file
->private_data
;
410 buf
[0] = test_bit(HCI_FORCE_SC
, &hdev
->dev_flags
) ? 'Y': 'N';
413 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
416 static ssize_t
force_sc_support_write(struct file
*file
,
417 const char __user
*user_buf
,
418 size_t count
, loff_t
*ppos
)
420 struct hci_dev
*hdev
= file
->private_data
;
422 size_t buf_size
= min(count
, (sizeof(buf
)-1));
425 if (test_bit(HCI_UP
, &hdev
->flags
))
428 if (copy_from_user(buf
, user_buf
, buf_size
))
431 buf
[buf_size
] = '\0';
432 if (strtobool(buf
, &enable
))
435 if (enable
== test_bit(HCI_FORCE_SC
, &hdev
->dev_flags
))
438 change_bit(HCI_FORCE_SC
, &hdev
->dev_flags
);
443 static const struct file_operations force_sc_support_fops
= {
445 .read
= force_sc_support_read
,
446 .write
= force_sc_support_write
,
447 .llseek
= default_llseek
,
450 static ssize_t
sc_only_mode_read(struct file
*file
, char __user
*user_buf
,
451 size_t count
, loff_t
*ppos
)
453 struct hci_dev
*hdev
= file
->private_data
;
456 buf
[0] = test_bit(HCI_SC_ONLY
, &hdev
->dev_flags
) ? 'Y': 'N';
459 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
462 static const struct file_operations sc_only_mode_fops
= {
464 .read
= sc_only_mode_read
,
465 .llseek
= default_llseek
,
468 static int idle_timeout_set(void *data
, u64 val
)
470 struct hci_dev
*hdev
= data
;
472 if (val
!= 0 && (val
< 500 || val
> 3600000))
476 hdev
->idle_timeout
= val
;
477 hci_dev_unlock(hdev
);
482 static int idle_timeout_get(void *data
, u64
*val
)
484 struct hci_dev
*hdev
= data
;
487 *val
= hdev
->idle_timeout
;
488 hci_dev_unlock(hdev
);
493 DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops
, idle_timeout_get
,
494 idle_timeout_set
, "%llu\n");
496 static int rpa_timeout_set(void *data
, u64 val
)
498 struct hci_dev
*hdev
= data
;
500 /* Require the RPA timeout to be at least 30 seconds and at most
503 if (val
< 30 || val
> (60 * 60 * 24))
507 hdev
->rpa_timeout
= val
;
508 hci_dev_unlock(hdev
);
513 static int rpa_timeout_get(void *data
, u64
*val
)
515 struct hci_dev
*hdev
= data
;
518 *val
= hdev
->rpa_timeout
;
519 hci_dev_unlock(hdev
);
524 DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops
, rpa_timeout_get
,
525 rpa_timeout_set
, "%llu\n");
527 static int sniff_min_interval_set(void *data
, u64 val
)
529 struct hci_dev
*hdev
= data
;
531 if (val
== 0 || val
% 2 || val
> hdev
->sniff_max_interval
)
535 hdev
->sniff_min_interval
= val
;
536 hci_dev_unlock(hdev
);
541 static int sniff_min_interval_get(void *data
, u64
*val
)
543 struct hci_dev
*hdev
= data
;
546 *val
= hdev
->sniff_min_interval
;
547 hci_dev_unlock(hdev
);
552 DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops
, sniff_min_interval_get
,
553 sniff_min_interval_set
, "%llu\n");
555 static int sniff_max_interval_set(void *data
, u64 val
)
557 struct hci_dev
*hdev
= data
;
559 if (val
== 0 || val
% 2 || val
< hdev
->sniff_min_interval
)
563 hdev
->sniff_max_interval
= val
;
564 hci_dev_unlock(hdev
);
569 static int sniff_max_interval_get(void *data
, u64
*val
)
571 struct hci_dev
*hdev
= data
;
574 *val
= hdev
->sniff_max_interval
;
575 hci_dev_unlock(hdev
);
580 DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops
, sniff_max_interval_get
,
581 sniff_max_interval_set
, "%llu\n");
583 static int conn_info_min_age_set(void *data
, u64 val
)
585 struct hci_dev
*hdev
= data
;
587 if (val
== 0 || val
> hdev
->conn_info_max_age
)
591 hdev
->conn_info_min_age
= val
;
592 hci_dev_unlock(hdev
);
597 static int conn_info_min_age_get(void *data
, u64
*val
)
599 struct hci_dev
*hdev
= data
;
602 *val
= hdev
->conn_info_min_age
;
603 hci_dev_unlock(hdev
);
608 DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops
, conn_info_min_age_get
,
609 conn_info_min_age_set
, "%llu\n");
611 static int conn_info_max_age_set(void *data
, u64 val
)
613 struct hci_dev
*hdev
= data
;
615 if (val
== 0 || val
< hdev
->conn_info_min_age
)
619 hdev
->conn_info_max_age
= val
;
620 hci_dev_unlock(hdev
);
625 static int conn_info_max_age_get(void *data
, u64
*val
)
627 struct hci_dev
*hdev
= data
;
630 *val
= hdev
->conn_info_max_age
;
631 hci_dev_unlock(hdev
);
636 DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops
, conn_info_max_age_get
,
637 conn_info_max_age_set
, "%llu\n");
639 static int identity_show(struct seq_file
*f
, void *p
)
641 struct hci_dev
*hdev
= f
->private;
647 hci_copy_identity_address(hdev
, &addr
, &addr_type
);
649 seq_printf(f
, "%pMR (type %u) %*phN %pMR\n", &addr
, addr_type
,
650 16, hdev
->irk
, &hdev
->rpa
);
652 hci_dev_unlock(hdev
);
657 static int identity_open(struct inode
*inode
, struct file
*file
)
659 return single_open(file
, identity_show
, inode
->i_private
);
662 static const struct file_operations identity_fops
= {
663 .open
= identity_open
,
666 .release
= single_release
,
669 static int random_address_show(struct seq_file
*f
, void *p
)
671 struct hci_dev
*hdev
= f
->private;
674 seq_printf(f
, "%pMR\n", &hdev
->random_addr
);
675 hci_dev_unlock(hdev
);
680 static int random_address_open(struct inode
*inode
, struct file
*file
)
682 return single_open(file
, random_address_show
, inode
->i_private
);
685 static const struct file_operations random_address_fops
= {
686 .open
= random_address_open
,
689 .release
= single_release
,
692 static int static_address_show(struct seq_file
*f
, void *p
)
694 struct hci_dev
*hdev
= f
->private;
697 seq_printf(f
, "%pMR\n", &hdev
->static_addr
);
698 hci_dev_unlock(hdev
);
703 static int static_address_open(struct inode
*inode
, struct file
*file
)
705 return single_open(file
, static_address_show
, inode
->i_private
);
708 static const struct file_operations static_address_fops
= {
709 .open
= static_address_open
,
712 .release
= single_release
,
715 static ssize_t
force_static_address_read(struct file
*file
,
716 char __user
*user_buf
,
717 size_t count
, loff_t
*ppos
)
719 struct hci_dev
*hdev
= file
->private_data
;
722 buf
[0] = test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dev_flags
) ? 'Y': 'N';
725 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
728 static ssize_t
force_static_address_write(struct file
*file
,
729 const char __user
*user_buf
,
730 size_t count
, loff_t
*ppos
)
732 struct hci_dev
*hdev
= file
->private_data
;
734 size_t buf_size
= min(count
, (sizeof(buf
)-1));
737 if (test_bit(HCI_UP
, &hdev
->flags
))
740 if (copy_from_user(buf
, user_buf
, buf_size
))
743 buf
[buf_size
] = '\0';
744 if (strtobool(buf
, &enable
))
747 if (enable
== test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dev_flags
))
750 change_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dev_flags
);
755 static const struct file_operations force_static_address_fops
= {
757 .read
= force_static_address_read
,
758 .write
= force_static_address_write
,
759 .llseek
= default_llseek
,
762 static int white_list_show(struct seq_file
*f
, void *ptr
)
764 struct hci_dev
*hdev
= f
->private;
765 struct bdaddr_list
*b
;
768 list_for_each_entry(b
, &hdev
->le_white_list
, list
)
769 seq_printf(f
, "%pMR (type %u)\n", &b
->bdaddr
, b
->bdaddr_type
);
770 hci_dev_unlock(hdev
);
775 static int white_list_open(struct inode
*inode
, struct file
*file
)
777 return single_open(file
, white_list_show
, inode
->i_private
);
780 static const struct file_operations white_list_fops
= {
781 .open
= white_list_open
,
784 .release
= single_release
,
787 static int identity_resolving_keys_show(struct seq_file
*f
, void *ptr
)
789 struct hci_dev
*hdev
= f
->private;
790 struct list_head
*p
, *n
;
793 list_for_each_safe(p
, n
, &hdev
->identity_resolving_keys
) {
794 struct smp_irk
*irk
= list_entry(p
, struct smp_irk
, list
);
795 seq_printf(f
, "%pMR (type %u) %*phN %pMR\n",
796 &irk
->bdaddr
, irk
->addr_type
,
797 16, irk
->val
, &irk
->rpa
);
799 hci_dev_unlock(hdev
);
804 static int identity_resolving_keys_open(struct inode
*inode
, struct file
*file
)
806 return single_open(file
, identity_resolving_keys_show
,
810 static const struct file_operations identity_resolving_keys_fops
= {
811 .open
= identity_resolving_keys_open
,
814 .release
= single_release
,
817 static int long_term_keys_show(struct seq_file
*f
, void *ptr
)
819 struct hci_dev
*hdev
= f
->private;
820 struct list_head
*p
, *n
;
823 list_for_each_safe(p
, n
, &hdev
->long_term_keys
) {
824 struct smp_ltk
*ltk
= list_entry(p
, struct smp_ltk
, list
);
825 seq_printf(f
, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
826 <k
->bdaddr
, ltk
->bdaddr_type
, ltk
->authenticated
,
827 ltk
->type
, ltk
->enc_size
, __le16_to_cpu(ltk
->ediv
),
828 __le64_to_cpu(ltk
->rand
), 16, ltk
->val
);
830 hci_dev_unlock(hdev
);
835 static int long_term_keys_open(struct inode
*inode
, struct file
*file
)
837 return single_open(file
, long_term_keys_show
, inode
->i_private
);
840 static const struct file_operations long_term_keys_fops
= {
841 .open
= long_term_keys_open
,
844 .release
= single_release
,
847 static int conn_min_interval_set(void *data
, u64 val
)
849 struct hci_dev
*hdev
= data
;
851 if (val
< 0x0006 || val
> 0x0c80 || val
> hdev
->le_conn_max_interval
)
855 hdev
->le_conn_min_interval
= val
;
856 hci_dev_unlock(hdev
);
861 static int conn_min_interval_get(void *data
, u64
*val
)
863 struct hci_dev
*hdev
= data
;
866 *val
= hdev
->le_conn_min_interval
;
867 hci_dev_unlock(hdev
);
872 DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops
, conn_min_interval_get
,
873 conn_min_interval_set
, "%llu\n");
875 static int conn_max_interval_set(void *data
, u64 val
)
877 struct hci_dev
*hdev
= data
;
879 if (val
< 0x0006 || val
> 0x0c80 || val
< hdev
->le_conn_min_interval
)
883 hdev
->le_conn_max_interval
= val
;
884 hci_dev_unlock(hdev
);
889 static int conn_max_interval_get(void *data
, u64
*val
)
891 struct hci_dev
*hdev
= data
;
894 *val
= hdev
->le_conn_max_interval
;
895 hci_dev_unlock(hdev
);
900 DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops
, conn_max_interval_get
,
901 conn_max_interval_set
, "%llu\n");
903 static int adv_channel_map_set(void *data
, u64 val
)
905 struct hci_dev
*hdev
= data
;
907 if (val
< 0x01 || val
> 0x07)
911 hdev
->le_adv_channel_map
= val
;
912 hci_dev_unlock(hdev
);
917 static int adv_channel_map_get(void *data
, u64
*val
)
919 struct hci_dev
*hdev
= data
;
922 *val
= hdev
->le_adv_channel_map
;
923 hci_dev_unlock(hdev
);
928 DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops
, adv_channel_map_get
,
929 adv_channel_map_set
, "%llu\n");
931 static ssize_t
lowpan_read(struct file
*file
, char __user
*user_buf
,
932 size_t count
, loff_t
*ppos
)
934 struct hci_dev
*hdev
= file
->private_data
;
937 buf
[0] = test_bit(HCI_6LOWPAN_ENABLED
, &hdev
->dev_flags
) ? 'Y' : 'N';
940 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, 2);
943 static ssize_t
lowpan_write(struct file
*fp
, const char __user
*user_buffer
,
944 size_t count
, loff_t
*position
)
946 struct hci_dev
*hdev
= fp
->private_data
;
949 size_t buf_size
= min(count
, (sizeof(buf
)-1));
951 if (copy_from_user(buf
, user_buffer
, buf_size
))
954 buf
[buf_size
] = '\0';
956 if (strtobool(buf
, &enable
) < 0)
959 if (enable
== test_bit(HCI_6LOWPAN_ENABLED
, &hdev
->dev_flags
))
962 change_bit(HCI_6LOWPAN_ENABLED
, &hdev
->dev_flags
);
967 static const struct file_operations lowpan_debugfs_fops
= {
970 .write
= lowpan_write
,
971 .llseek
= default_llseek
,
974 static int le_auto_conn_show(struct seq_file
*sf
, void *ptr
)
976 struct hci_dev
*hdev
= sf
->private;
977 struct hci_conn_params
*p
;
981 list_for_each_entry(p
, &hdev
->le_conn_params
, list
) {
982 seq_printf(sf
, "%pMR %u %u\n", &p
->addr
, p
->addr_type
,
986 hci_dev_unlock(hdev
);
991 static int le_auto_conn_open(struct inode
*inode
, struct file
*file
)
993 return single_open(file
, le_auto_conn_show
, inode
->i_private
);
996 static ssize_t
le_auto_conn_write(struct file
*file
, const char __user
*data
,
997 size_t count
, loff_t
*offset
)
999 struct seq_file
*sf
= file
->private_data
;
1000 struct hci_dev
*hdev
= sf
->private;
1001 u8 auto_connect
= 0;
1008 /* Don't allow partial write */
1015 buf
= memdup_user(data
, count
);
1017 return PTR_ERR(buf
);
1019 if (memcmp(buf
, "add", 3) == 0) {
1020 n
= sscanf(&buf
[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu",
1021 &addr
.b
[5], &addr
.b
[4], &addr
.b
[3], &addr
.b
[2],
1022 &addr
.b
[1], &addr
.b
[0], &addr_type
,
1031 err
= hci_conn_params_add(hdev
, &addr
, addr_type
, auto_connect
,
1032 hdev
->le_conn_min_interval
,
1033 hdev
->le_conn_max_interval
);
1034 hci_dev_unlock(hdev
);
1038 } else if (memcmp(buf
, "del", 3) == 0) {
1039 n
= sscanf(&buf
[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu",
1040 &addr
.b
[5], &addr
.b
[4], &addr
.b
[3], &addr
.b
[2],
1041 &addr
.b
[1], &addr
.b
[0], &addr_type
);
1049 hci_conn_params_del(hdev
, &addr
, addr_type
);
1050 hci_dev_unlock(hdev
);
1051 } else if (memcmp(buf
, "clr", 3) == 0) {
1053 hci_conn_params_clear(hdev
);
1054 hci_pend_le_conns_clear(hdev
);
1055 hci_update_background_scan(hdev
);
1056 hci_dev_unlock(hdev
);
1070 static const struct file_operations le_auto_conn_fops
= {
1071 .open
= le_auto_conn_open
,
1073 .write
= le_auto_conn_write
,
1074 .llseek
= seq_lseek
,
1075 .release
= single_release
,
1078 /* ---- HCI requests ---- */
1080 static void hci_req_sync_complete(struct hci_dev
*hdev
, u8 result
)
1082 BT_DBG("%s result 0x%2.2x", hdev
->name
, result
);
1084 if (hdev
->req_status
== HCI_REQ_PEND
) {
1085 hdev
->req_result
= result
;
1086 hdev
->req_status
= HCI_REQ_DONE
;
1087 wake_up_interruptible(&hdev
->req_wait_q
);
1091 static void hci_req_cancel(struct hci_dev
*hdev
, int err
)
1093 BT_DBG("%s err 0x%2.2x", hdev
->name
, err
);
1095 if (hdev
->req_status
== HCI_REQ_PEND
) {
1096 hdev
->req_result
= err
;
1097 hdev
->req_status
= HCI_REQ_CANCELED
;
1098 wake_up_interruptible(&hdev
->req_wait_q
);
1102 static struct sk_buff
*hci_get_cmd_complete(struct hci_dev
*hdev
, u16 opcode
,
1105 struct hci_ev_cmd_complete
*ev
;
1106 struct hci_event_hdr
*hdr
;
1107 struct sk_buff
*skb
;
1111 skb
= hdev
->recv_evt
;
1112 hdev
->recv_evt
= NULL
;
1114 hci_dev_unlock(hdev
);
1117 return ERR_PTR(-ENODATA
);
1119 if (skb
->len
< sizeof(*hdr
)) {
1120 BT_ERR("Too short HCI event");
1124 hdr
= (void *) skb
->data
;
1125 skb_pull(skb
, HCI_EVENT_HDR_SIZE
);
1128 if (hdr
->evt
!= event
)
1133 if (hdr
->evt
!= HCI_EV_CMD_COMPLETE
) {
1134 BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr
->evt
);
1138 if (skb
->len
< sizeof(*ev
)) {
1139 BT_ERR("Too short cmd_complete event");
1143 ev
= (void *) skb
->data
;
1144 skb_pull(skb
, sizeof(*ev
));
1146 if (opcode
== __le16_to_cpu(ev
->opcode
))
1149 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode
,
1150 __le16_to_cpu(ev
->opcode
));
1154 return ERR_PTR(-ENODATA
);
1157 struct sk_buff
*__hci_cmd_sync_ev(struct hci_dev
*hdev
, u16 opcode
, u32 plen
,
1158 const void *param
, u8 event
, u32 timeout
)
1160 DECLARE_WAITQUEUE(wait
, current
);
1161 struct hci_request req
;
1164 BT_DBG("%s", hdev
->name
);
1166 hci_req_init(&req
, hdev
);
1168 hci_req_add_ev(&req
, opcode
, plen
, param
, event
);
1170 hdev
->req_status
= HCI_REQ_PEND
;
1172 err
= hci_req_run(&req
, hci_req_sync_complete
);
1174 return ERR_PTR(err
);
1176 add_wait_queue(&hdev
->req_wait_q
, &wait
);
1177 set_current_state(TASK_INTERRUPTIBLE
);
1179 schedule_timeout(timeout
);
1181 remove_wait_queue(&hdev
->req_wait_q
, &wait
);
1183 if (signal_pending(current
))
1184 return ERR_PTR(-EINTR
);
1186 switch (hdev
->req_status
) {
1188 err
= -bt_to_errno(hdev
->req_result
);
1191 case HCI_REQ_CANCELED
:
1192 err
= -hdev
->req_result
;
1200 hdev
->req_status
= hdev
->req_result
= 0;
1202 BT_DBG("%s end: err %d", hdev
->name
, err
);
1205 return ERR_PTR(err
);
1207 return hci_get_cmd_complete(hdev
, opcode
, event
);
1209 EXPORT_SYMBOL(__hci_cmd_sync_ev
);
1211 struct sk_buff
*__hci_cmd_sync(struct hci_dev
*hdev
, u16 opcode
, u32 plen
,
1212 const void *param
, u32 timeout
)
1214 return __hci_cmd_sync_ev(hdev
, opcode
, plen
, param
, 0, timeout
);
1216 EXPORT_SYMBOL(__hci_cmd_sync
);
1218 /* Execute request and wait for completion. */
1219 static int __hci_req_sync(struct hci_dev
*hdev
,
1220 void (*func
)(struct hci_request
*req
,
1222 unsigned long opt
, __u32 timeout
)
1224 struct hci_request req
;
1225 DECLARE_WAITQUEUE(wait
, current
);
1228 BT_DBG("%s start", hdev
->name
);
1230 hci_req_init(&req
, hdev
);
1232 hdev
->req_status
= HCI_REQ_PEND
;
1236 err
= hci_req_run(&req
, hci_req_sync_complete
);
1238 hdev
->req_status
= 0;
1240 /* ENODATA means the HCI request command queue is empty.
1241 * This can happen when a request with conditionals doesn't
1242 * trigger any commands to be sent. This is normal behavior
1243 * and should not trigger an error return.
1245 if (err
== -ENODATA
)
1251 add_wait_queue(&hdev
->req_wait_q
, &wait
);
1252 set_current_state(TASK_INTERRUPTIBLE
);
1254 schedule_timeout(timeout
);
1256 remove_wait_queue(&hdev
->req_wait_q
, &wait
);
1258 if (signal_pending(current
))
1261 switch (hdev
->req_status
) {
1263 err
= -bt_to_errno(hdev
->req_result
);
1266 case HCI_REQ_CANCELED
:
1267 err
= -hdev
->req_result
;
1275 hdev
->req_status
= hdev
->req_result
= 0;
1277 BT_DBG("%s end: err %d", hdev
->name
, err
);
1282 static int hci_req_sync(struct hci_dev
*hdev
,
1283 void (*req
)(struct hci_request
*req
,
1285 unsigned long opt
, __u32 timeout
)
1289 if (!test_bit(HCI_UP
, &hdev
->flags
))
1292 /* Serialize all requests */
1294 ret
= __hci_req_sync(hdev
, req
, opt
, timeout
);
1295 hci_req_unlock(hdev
);
1300 static void hci_reset_req(struct hci_request
*req
, unsigned long opt
)
1302 BT_DBG("%s %ld", req
->hdev
->name
, opt
);
1305 set_bit(HCI_RESET
, &req
->hdev
->flags
);
1306 hci_req_add(req
, HCI_OP_RESET
, 0, NULL
);
1309 static void bredr_init(struct hci_request
*req
)
1311 req
->hdev
->flow_ctl_mode
= HCI_FLOW_CTL_MODE_PACKET_BASED
;
1313 /* Read Local Supported Features */
1314 hci_req_add(req
, HCI_OP_READ_LOCAL_FEATURES
, 0, NULL
);
1316 /* Read Local Version */
1317 hci_req_add(req
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
);
1319 /* Read BD Address */
1320 hci_req_add(req
, HCI_OP_READ_BD_ADDR
, 0, NULL
);
1323 static void amp_init(struct hci_request
*req
)
1325 req
->hdev
->flow_ctl_mode
= HCI_FLOW_CTL_MODE_BLOCK_BASED
;
1327 /* Read Local Version */
1328 hci_req_add(req
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
);
1330 /* Read Local Supported Commands */
1331 hci_req_add(req
, HCI_OP_READ_LOCAL_COMMANDS
, 0, NULL
);
1333 /* Read Local Supported Features */
1334 hci_req_add(req
, HCI_OP_READ_LOCAL_FEATURES
, 0, NULL
);
1336 /* Read Local AMP Info */
1337 hci_req_add(req
, HCI_OP_READ_LOCAL_AMP_INFO
, 0, NULL
);
1339 /* Read Data Blk size */
1340 hci_req_add(req
, HCI_OP_READ_DATA_BLOCK_SIZE
, 0, NULL
);
1342 /* Read Flow Control Mode */
1343 hci_req_add(req
, HCI_OP_READ_FLOW_CONTROL_MODE
, 0, NULL
);
1345 /* Read Location Data */
1346 hci_req_add(req
, HCI_OP_READ_LOCATION_DATA
, 0, NULL
);
1349 static void hci_init1_req(struct hci_request
*req
, unsigned long opt
)
1351 struct hci_dev
*hdev
= req
->hdev
;
1353 BT_DBG("%s %ld", hdev
->name
, opt
);
1356 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
))
1357 hci_reset_req(req
, 0);
1359 switch (hdev
->dev_type
) {
1369 BT_ERR("Unknown device type %d", hdev
->dev_type
);
1374 static void bredr_setup(struct hci_request
*req
)
1376 struct hci_dev
*hdev
= req
->hdev
;
1381 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
1382 hci_req_add(req
, HCI_OP_READ_BUFFER_SIZE
, 0, NULL
);
1384 /* Read Class of Device */
1385 hci_req_add(req
, HCI_OP_READ_CLASS_OF_DEV
, 0, NULL
);
1387 /* Read Local Name */
1388 hci_req_add(req
, HCI_OP_READ_LOCAL_NAME
, 0, NULL
);
1390 /* Read Voice Setting */
1391 hci_req_add(req
, HCI_OP_READ_VOICE_SETTING
, 0, NULL
);
1393 /* Read Number of Supported IAC */
1394 hci_req_add(req
, HCI_OP_READ_NUM_SUPPORTED_IAC
, 0, NULL
);
1396 /* Read Current IAC LAP */
1397 hci_req_add(req
, HCI_OP_READ_CURRENT_IAC_LAP
, 0, NULL
);
1399 /* Clear Event Filters */
1400 flt_type
= HCI_FLT_CLEAR_ALL
;
1401 hci_req_add(req
, HCI_OP_SET_EVENT_FLT
, 1, &flt_type
);
1403 /* Connection accept timeout ~20 secs */
1404 param
= cpu_to_le16(0x7d00);
1405 hci_req_add(req
, HCI_OP_WRITE_CA_TIMEOUT
, 2, ¶m
);
1407 /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2,
1408 * but it does not support page scan related HCI commands.
1410 if (hdev
->manufacturer
!= 31 && hdev
->hci_ver
> BLUETOOTH_VER_1_1
) {
1411 hci_req_add(req
, HCI_OP_READ_PAGE_SCAN_ACTIVITY
, 0, NULL
);
1412 hci_req_add(req
, HCI_OP_READ_PAGE_SCAN_TYPE
, 0, NULL
);
1416 static void le_setup(struct hci_request
*req
)
1418 struct hci_dev
*hdev
= req
->hdev
;
1420 /* Read LE Buffer Size */
1421 hci_req_add(req
, HCI_OP_LE_READ_BUFFER_SIZE
, 0, NULL
);
1423 /* Read LE Local Supported Features */
1424 hci_req_add(req
, HCI_OP_LE_READ_LOCAL_FEATURES
, 0, NULL
);
1426 /* Read LE Supported States */
1427 hci_req_add(req
, HCI_OP_LE_READ_SUPPORTED_STATES
, 0, NULL
);
1429 /* Read LE Advertising Channel TX Power */
1430 hci_req_add(req
, HCI_OP_LE_READ_ADV_TX_POWER
, 0, NULL
);
1432 /* Read LE White List Size */
1433 hci_req_add(req
, HCI_OP_LE_READ_WHITE_LIST_SIZE
, 0, NULL
);
1435 /* Clear LE White List */
1436 hci_req_add(req
, HCI_OP_LE_CLEAR_WHITE_LIST
, 0, NULL
);
1438 /* LE-only controllers have LE implicitly enabled */
1439 if (!lmp_bredr_capable(hdev
))
1440 set_bit(HCI_LE_ENABLED
, &hdev
->dev_flags
);
1443 static u8
hci_get_inquiry_mode(struct hci_dev
*hdev
)
1445 if (lmp_ext_inq_capable(hdev
))
1448 if (lmp_inq_rssi_capable(hdev
))
1451 if (hdev
->manufacturer
== 11 && hdev
->hci_rev
== 0x00 &&
1452 hdev
->lmp_subver
== 0x0757)
1455 if (hdev
->manufacturer
== 15) {
1456 if (hdev
->hci_rev
== 0x03 && hdev
->lmp_subver
== 0x6963)
1458 if (hdev
->hci_rev
== 0x09 && hdev
->lmp_subver
== 0x6963)
1460 if (hdev
->hci_rev
== 0x00 && hdev
->lmp_subver
== 0x6965)
1464 if (hdev
->manufacturer
== 31 && hdev
->hci_rev
== 0x2005 &&
1465 hdev
->lmp_subver
== 0x1805)
1471 static void hci_setup_inquiry_mode(struct hci_request
*req
)
1475 mode
= hci_get_inquiry_mode(req
->hdev
);
1477 hci_req_add(req
, HCI_OP_WRITE_INQUIRY_MODE
, 1, &mode
);
1480 static void hci_setup_event_mask(struct hci_request
*req
)
1482 struct hci_dev
*hdev
= req
->hdev
;
1484 /* The second byte is 0xff instead of 0x9f (two reserved bits
1485 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
1486 * command otherwise.
1488 u8 events
[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
1490 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
1491 * any event mask for pre 1.2 devices.
1493 if (hdev
->hci_ver
< BLUETOOTH_VER_1_2
)
1496 if (lmp_bredr_capable(hdev
)) {
1497 events
[4] |= 0x01; /* Flow Specification Complete */
1498 events
[4] |= 0x02; /* Inquiry Result with RSSI */
1499 events
[4] |= 0x04; /* Read Remote Extended Features Complete */
1500 events
[5] |= 0x08; /* Synchronous Connection Complete */
1501 events
[5] |= 0x10; /* Synchronous Connection Changed */
1503 /* Use a different default for LE-only devices */
1504 memset(events
, 0, sizeof(events
));
1505 events
[0] |= 0x10; /* Disconnection Complete */
1506 events
[0] |= 0x80; /* Encryption Change */
1507 events
[1] |= 0x08; /* Read Remote Version Information Complete */
1508 events
[1] |= 0x20; /* Command Complete */
1509 events
[1] |= 0x40; /* Command Status */
1510 events
[1] |= 0x80; /* Hardware Error */
1511 events
[2] |= 0x04; /* Number of Completed Packets */
1512 events
[3] |= 0x02; /* Data Buffer Overflow */
1513 events
[5] |= 0x80; /* Encryption Key Refresh Complete */
1516 if (lmp_inq_rssi_capable(hdev
))
1517 events
[4] |= 0x02; /* Inquiry Result with RSSI */
1519 if (lmp_sniffsubr_capable(hdev
))
1520 events
[5] |= 0x20; /* Sniff Subrating */
1522 if (lmp_pause_enc_capable(hdev
))
1523 events
[5] |= 0x80; /* Encryption Key Refresh Complete */
1525 if (lmp_ext_inq_capable(hdev
))
1526 events
[5] |= 0x40; /* Extended Inquiry Result */
1528 if (lmp_no_flush_capable(hdev
))
1529 events
[7] |= 0x01; /* Enhanced Flush Complete */
1531 if (lmp_lsto_capable(hdev
))
1532 events
[6] |= 0x80; /* Link Supervision Timeout Changed */
1534 if (lmp_ssp_capable(hdev
)) {
1535 events
[6] |= 0x01; /* IO Capability Request */
1536 events
[6] |= 0x02; /* IO Capability Response */
1537 events
[6] |= 0x04; /* User Confirmation Request */
1538 events
[6] |= 0x08; /* User Passkey Request */
1539 events
[6] |= 0x10; /* Remote OOB Data Request */
1540 events
[6] |= 0x20; /* Simple Pairing Complete */
1541 events
[7] |= 0x04; /* User Passkey Notification */
1542 events
[7] |= 0x08; /* Keypress Notification */
1543 events
[7] |= 0x10; /* Remote Host Supported
1544 * Features Notification
1548 if (lmp_le_capable(hdev
))
1549 events
[7] |= 0x20; /* LE Meta-Event */
1551 hci_req_add(req
, HCI_OP_SET_EVENT_MASK
, sizeof(events
), events
);
1553 if (lmp_le_capable(hdev
)) {
1554 memset(events
, 0, sizeof(events
));
1556 hci_req_add(req
, HCI_OP_LE_SET_EVENT_MASK
,
1557 sizeof(events
), events
);
1561 static void hci_init2_req(struct hci_request
*req
, unsigned long opt
)
1563 struct hci_dev
*hdev
= req
->hdev
;
1565 if (lmp_bredr_capable(hdev
))
1568 clear_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
);
1570 if (lmp_le_capable(hdev
))
1573 hci_setup_event_mask(req
);
1575 /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read
1576 * local supported commands HCI command.
1578 if (hdev
->manufacturer
!= 31 && hdev
->hci_ver
> BLUETOOTH_VER_1_1
)
1579 hci_req_add(req
, HCI_OP_READ_LOCAL_COMMANDS
, 0, NULL
);
1581 if (lmp_ssp_capable(hdev
)) {
1582 /* When SSP is available, then the host features page
1583 * should also be available as well. However some
1584 * controllers list the max_page as 0 as long as SSP
1585 * has not been enabled. To achieve proper debugging
1586 * output, force the minimum max_page to 1 at least.
1588 hdev
->max_page
= 0x01;
1590 if (test_bit(HCI_SSP_ENABLED
, &hdev
->dev_flags
)) {
1592 hci_req_add(req
, HCI_OP_WRITE_SSP_MODE
,
1593 sizeof(mode
), &mode
);
1595 struct hci_cp_write_eir cp
;
1597 memset(hdev
->eir
, 0, sizeof(hdev
->eir
));
1598 memset(&cp
, 0, sizeof(cp
));
1600 hci_req_add(req
, HCI_OP_WRITE_EIR
, sizeof(cp
), &cp
);
1604 if (lmp_inq_rssi_capable(hdev
))
1605 hci_setup_inquiry_mode(req
);
1607 if (lmp_inq_tx_pwr_capable(hdev
))
1608 hci_req_add(req
, HCI_OP_READ_INQ_RSP_TX_POWER
, 0, NULL
);
1610 if (lmp_ext_feat_capable(hdev
)) {
1611 struct hci_cp_read_local_ext_features cp
;
1614 hci_req_add(req
, HCI_OP_READ_LOCAL_EXT_FEATURES
,
1618 if (test_bit(HCI_LINK_SECURITY
, &hdev
->dev_flags
)) {
1620 hci_req_add(req
, HCI_OP_WRITE_AUTH_ENABLE
, sizeof(enable
),
1625 static void hci_setup_link_policy(struct hci_request
*req
)
1627 struct hci_dev
*hdev
= req
->hdev
;
1628 struct hci_cp_write_def_link_policy cp
;
1629 u16 link_policy
= 0;
1631 if (lmp_rswitch_capable(hdev
))
1632 link_policy
|= HCI_LP_RSWITCH
;
1633 if (lmp_hold_capable(hdev
))
1634 link_policy
|= HCI_LP_HOLD
;
1635 if (lmp_sniff_capable(hdev
))
1636 link_policy
|= HCI_LP_SNIFF
;
1637 if (lmp_park_capable(hdev
))
1638 link_policy
|= HCI_LP_PARK
;
1640 cp
.policy
= cpu_to_le16(link_policy
);
1641 hci_req_add(req
, HCI_OP_WRITE_DEF_LINK_POLICY
, sizeof(cp
), &cp
);
1644 static void hci_set_le_support(struct hci_request
*req
)
1646 struct hci_dev
*hdev
= req
->hdev
;
1647 struct hci_cp_write_le_host_supported cp
;
1649 /* LE-only devices do not support explicit enablement */
1650 if (!lmp_bredr_capable(hdev
))
1653 memset(&cp
, 0, sizeof(cp
));
1655 if (test_bit(HCI_LE_ENABLED
, &hdev
->dev_flags
)) {
1657 cp
.simul
= lmp_le_br_capable(hdev
);
1660 if (cp
.le
!= lmp_host_le_capable(hdev
))
1661 hci_req_add(req
, HCI_OP_WRITE_LE_HOST_SUPPORTED
, sizeof(cp
),
1665 static void hci_set_event_mask_page_2(struct hci_request
*req
)
1667 struct hci_dev
*hdev
= req
->hdev
;
1668 u8 events
[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
1670 /* If Connectionless Slave Broadcast master role is supported
1671 * enable all necessary events for it.
1673 if (lmp_csb_master_capable(hdev
)) {
1674 events
[1] |= 0x40; /* Triggered Clock Capture */
1675 events
[1] |= 0x80; /* Synchronization Train Complete */
1676 events
[2] |= 0x10; /* Slave Page Response Timeout */
1677 events
[2] |= 0x20; /* CSB Channel Map Change */
1680 /* If Connectionless Slave Broadcast slave role is supported
1681 * enable all necessary events for it.
1683 if (lmp_csb_slave_capable(hdev
)) {
1684 events
[2] |= 0x01; /* Synchronization Train Received */
1685 events
[2] |= 0x02; /* CSB Receive */
1686 events
[2] |= 0x04; /* CSB Timeout */
1687 events
[2] |= 0x08; /* Truncated Page Complete */
1690 /* Enable Authenticated Payload Timeout Expired event if supported */
1691 if (lmp_ping_capable(hdev
))
1694 hci_req_add(req
, HCI_OP_SET_EVENT_MASK_PAGE_2
, sizeof(events
), events
);
1697 static void hci_init3_req(struct hci_request
*req
, unsigned long opt
)
1699 struct hci_dev
*hdev
= req
->hdev
;
1702 /* Some Broadcom based Bluetooth controllers do not support the
1703 * Delete Stored Link Key command. They are clearly indicating its
1704 * absence in the bit mask of supported commands.
1706 * Check the supported commands and only if the the command is marked
1707 * as supported send it. If not supported assume that the controller
1708 * does not have actual support for stored link keys which makes this
1709 * command redundant anyway.
1711 * Some controllers indicate that they support handling deleting
1712 * stored link keys, but they don't. The quirk lets a driver
1713 * just disable this command.
1715 if (hdev
->commands
[6] & 0x80 &&
1716 !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY
, &hdev
->quirks
)) {
1717 struct hci_cp_delete_stored_link_key cp
;
1719 bacpy(&cp
.bdaddr
, BDADDR_ANY
);
1720 cp
.delete_all
= 0x01;
1721 hci_req_add(req
, HCI_OP_DELETE_STORED_LINK_KEY
,
1725 if (hdev
->commands
[5] & 0x10)
1726 hci_setup_link_policy(req
);
1728 if (lmp_le_capable(hdev
))
1729 hci_set_le_support(req
);
1731 /* Read features beyond page 1 if available */
1732 for (p
= 2; p
< HCI_MAX_PAGES
&& p
<= hdev
->max_page
; p
++) {
1733 struct hci_cp_read_local_ext_features cp
;
1736 hci_req_add(req
, HCI_OP_READ_LOCAL_EXT_FEATURES
,
1741 static void hci_init4_req(struct hci_request
*req
, unsigned long opt
)
1743 struct hci_dev
*hdev
= req
->hdev
;
1745 /* Set event mask page 2 if the HCI command for it is supported */
1746 if (hdev
->commands
[22] & 0x04)
1747 hci_set_event_mask_page_2(req
);
1749 /* Check for Synchronization Train support */
1750 if (lmp_sync_train_capable(hdev
))
1751 hci_req_add(req
, HCI_OP_READ_SYNC_TRAIN_PARAMS
, 0, NULL
);
1753 /* Enable Secure Connections if supported and configured */
1754 if ((lmp_sc_capable(hdev
) ||
1755 test_bit(HCI_FORCE_SC
, &hdev
->dev_flags
)) &&
1756 test_bit(HCI_SC_ENABLED
, &hdev
->dev_flags
)) {
1758 hci_req_add(req
, HCI_OP_WRITE_SC_SUPPORT
,
1759 sizeof(support
), &support
);
1763 static int __hci_init(struct hci_dev
*hdev
)
1767 err
= __hci_req_sync(hdev
, hci_init1_req
, 0, HCI_INIT_TIMEOUT
);
1771 /* The Device Under Test (DUT) mode is special and available for
1772 * all controller types. So just create it early on.
1774 if (test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
1775 debugfs_create_file("dut_mode", 0644, hdev
->debugfs
, hdev
,
1779 /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode
1780 * BR/EDR/LE type controllers. AMP controllers only need the
1783 if (hdev
->dev_type
!= HCI_BREDR
)
1786 err
= __hci_req_sync(hdev
, hci_init2_req
, 0, HCI_INIT_TIMEOUT
);
1790 err
= __hci_req_sync(hdev
, hci_init3_req
, 0, HCI_INIT_TIMEOUT
);
1794 err
= __hci_req_sync(hdev
, hci_init4_req
, 0, HCI_INIT_TIMEOUT
);
1798 /* Only create debugfs entries during the initial setup
1799 * phase and not every time the controller gets powered on.
1801 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
))
1804 debugfs_create_file("features", 0444, hdev
->debugfs
, hdev
,
1806 debugfs_create_u16("manufacturer", 0444, hdev
->debugfs
,
1807 &hdev
->manufacturer
);
1808 debugfs_create_u8("hci_version", 0444, hdev
->debugfs
, &hdev
->hci_ver
);
1809 debugfs_create_u16("hci_revision", 0444, hdev
->debugfs
, &hdev
->hci_rev
);
1810 debugfs_create_file("blacklist", 0444, hdev
->debugfs
, hdev
,
1812 debugfs_create_file("uuids", 0444, hdev
->debugfs
, hdev
, &uuids_fops
);
1814 debugfs_create_file("conn_info_min_age", 0644, hdev
->debugfs
, hdev
,
1815 &conn_info_min_age_fops
);
1816 debugfs_create_file("conn_info_max_age", 0644, hdev
->debugfs
, hdev
,
1817 &conn_info_max_age_fops
);
1819 if (lmp_bredr_capable(hdev
)) {
1820 debugfs_create_file("inquiry_cache", 0444, hdev
->debugfs
,
1821 hdev
, &inquiry_cache_fops
);
1822 debugfs_create_file("link_keys", 0400, hdev
->debugfs
,
1823 hdev
, &link_keys_fops
);
1824 debugfs_create_file("dev_class", 0444, hdev
->debugfs
,
1825 hdev
, &dev_class_fops
);
1826 debugfs_create_file("voice_setting", 0444, hdev
->debugfs
,
1827 hdev
, &voice_setting_fops
);
1830 if (lmp_ssp_capable(hdev
)) {
1831 debugfs_create_file("auto_accept_delay", 0644, hdev
->debugfs
,
1832 hdev
, &auto_accept_delay_fops
);
1833 debugfs_create_file("ssp_debug_mode", 0644, hdev
->debugfs
,
1834 hdev
, &ssp_debug_mode_fops
);
1835 debugfs_create_file("force_sc_support", 0644, hdev
->debugfs
,
1836 hdev
, &force_sc_support_fops
);
1837 debugfs_create_file("sc_only_mode", 0444, hdev
->debugfs
,
1838 hdev
, &sc_only_mode_fops
);
1841 if (lmp_sniff_capable(hdev
)) {
1842 debugfs_create_file("idle_timeout", 0644, hdev
->debugfs
,
1843 hdev
, &idle_timeout_fops
);
1844 debugfs_create_file("sniff_min_interval", 0644, hdev
->debugfs
,
1845 hdev
, &sniff_min_interval_fops
);
1846 debugfs_create_file("sniff_max_interval", 0644, hdev
->debugfs
,
1847 hdev
, &sniff_max_interval_fops
);
1850 if (lmp_le_capable(hdev
)) {
1851 debugfs_create_file("identity", 0400, hdev
->debugfs
,
1852 hdev
, &identity_fops
);
1853 debugfs_create_file("rpa_timeout", 0644, hdev
->debugfs
,
1854 hdev
, &rpa_timeout_fops
);
1855 debugfs_create_file("random_address", 0444, hdev
->debugfs
,
1856 hdev
, &random_address_fops
);
1857 debugfs_create_file("static_address", 0444, hdev
->debugfs
,
1858 hdev
, &static_address_fops
);
1860 /* For controllers with a public address, provide a debug
1861 * option to force the usage of the configured static
1862 * address. By default the public address is used.
1864 if (bacmp(&hdev
->bdaddr
, BDADDR_ANY
))
1865 debugfs_create_file("force_static_address", 0644,
1866 hdev
->debugfs
, hdev
,
1867 &force_static_address_fops
);
1869 debugfs_create_u8("white_list_size", 0444, hdev
->debugfs
,
1870 &hdev
->le_white_list_size
);
1871 debugfs_create_file("white_list", 0444, hdev
->debugfs
, hdev
,
1873 debugfs_create_file("identity_resolving_keys", 0400,
1874 hdev
->debugfs
, hdev
,
1875 &identity_resolving_keys_fops
);
1876 debugfs_create_file("long_term_keys", 0400, hdev
->debugfs
,
1877 hdev
, &long_term_keys_fops
);
1878 debugfs_create_file("conn_min_interval", 0644, hdev
->debugfs
,
1879 hdev
, &conn_min_interval_fops
);
1880 debugfs_create_file("conn_max_interval", 0644, hdev
->debugfs
,
1881 hdev
, &conn_max_interval_fops
);
1882 debugfs_create_file("adv_channel_map", 0644, hdev
->debugfs
,
1883 hdev
, &adv_channel_map_fops
);
1884 debugfs_create_file("6lowpan", 0644, hdev
->debugfs
, hdev
,
1885 &lowpan_debugfs_fops
);
1886 debugfs_create_file("le_auto_conn", 0644, hdev
->debugfs
, hdev
,
1887 &le_auto_conn_fops
);
1888 debugfs_create_u16("discov_interleaved_timeout", 0644,
1890 &hdev
->discov_interleaved_timeout
);
1896 static void hci_scan_req(struct hci_request
*req
, unsigned long opt
)
1900 BT_DBG("%s %x", req
->hdev
->name
, scan
);
1902 /* Inquiry and Page scans */
1903 hci_req_add(req
, HCI_OP_WRITE_SCAN_ENABLE
, 1, &scan
);
1906 static void hci_auth_req(struct hci_request
*req
, unsigned long opt
)
1910 BT_DBG("%s %x", req
->hdev
->name
, auth
);
1912 /* Authentication */
1913 hci_req_add(req
, HCI_OP_WRITE_AUTH_ENABLE
, 1, &auth
);
1916 static void hci_encrypt_req(struct hci_request
*req
, unsigned long opt
)
1920 BT_DBG("%s %x", req
->hdev
->name
, encrypt
);
1923 hci_req_add(req
, HCI_OP_WRITE_ENCRYPT_MODE
, 1, &encrypt
);
1926 static void hci_linkpol_req(struct hci_request
*req
, unsigned long opt
)
1928 __le16 policy
= cpu_to_le16(opt
);
1930 BT_DBG("%s %x", req
->hdev
->name
, policy
);
1932 /* Default link policy */
1933 hci_req_add(req
, HCI_OP_WRITE_DEF_LINK_POLICY
, 2, &policy
);
1936 /* Get HCI device by index.
1937 * Device is held on return. */
1938 struct hci_dev
*hci_dev_get(int index
)
1940 struct hci_dev
*hdev
= NULL
, *d
;
1942 BT_DBG("%d", index
);
1947 read_lock(&hci_dev_list_lock
);
1948 list_for_each_entry(d
, &hci_dev_list
, list
) {
1949 if (d
->id
== index
) {
1950 hdev
= hci_dev_hold(d
);
1954 read_unlock(&hci_dev_list_lock
);
1958 /* ---- Inquiry support ---- */
1960 bool hci_discovery_active(struct hci_dev
*hdev
)
1962 struct discovery_state
*discov
= &hdev
->discovery
;
1964 switch (discov
->state
) {
1965 case DISCOVERY_FINDING
:
1966 case DISCOVERY_RESOLVING
:
1974 void hci_discovery_set_state(struct hci_dev
*hdev
, int state
)
1976 BT_DBG("%s state %u -> %u", hdev
->name
, hdev
->discovery
.state
, state
);
1978 if (hdev
->discovery
.state
== state
)
1982 case DISCOVERY_STOPPED
:
1983 hci_update_background_scan(hdev
);
1985 if (hdev
->discovery
.state
!= DISCOVERY_STARTING
)
1986 mgmt_discovering(hdev
, 0);
1988 case DISCOVERY_STARTING
:
1990 case DISCOVERY_FINDING
:
1991 mgmt_discovering(hdev
, 1);
1993 case DISCOVERY_RESOLVING
:
1995 case DISCOVERY_STOPPING
:
1999 hdev
->discovery
.state
= state
;
2002 void hci_inquiry_cache_flush(struct hci_dev
*hdev
)
2004 struct discovery_state
*cache
= &hdev
->discovery
;
2005 struct inquiry_entry
*p
, *n
;
2007 list_for_each_entry_safe(p
, n
, &cache
->all
, all
) {
2012 INIT_LIST_HEAD(&cache
->unknown
);
2013 INIT_LIST_HEAD(&cache
->resolve
);
2016 struct inquiry_entry
*hci_inquiry_cache_lookup(struct hci_dev
*hdev
,
2019 struct discovery_state
*cache
= &hdev
->discovery
;
2020 struct inquiry_entry
*e
;
2022 BT_DBG("cache %p, %pMR", cache
, bdaddr
);
2024 list_for_each_entry(e
, &cache
->all
, all
) {
2025 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
2032 struct inquiry_entry
*hci_inquiry_cache_lookup_unknown(struct hci_dev
*hdev
,
2035 struct discovery_state
*cache
= &hdev
->discovery
;
2036 struct inquiry_entry
*e
;
2038 BT_DBG("cache %p, %pMR", cache
, bdaddr
);
2040 list_for_each_entry(e
, &cache
->unknown
, list
) {
2041 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
2048 struct inquiry_entry
*hci_inquiry_cache_lookup_resolve(struct hci_dev
*hdev
,
2052 struct discovery_state
*cache
= &hdev
->discovery
;
2053 struct inquiry_entry
*e
;
2055 BT_DBG("cache %p bdaddr %pMR state %d", cache
, bdaddr
, state
);
2057 list_for_each_entry(e
, &cache
->resolve
, list
) {
2058 if (!bacmp(bdaddr
, BDADDR_ANY
) && e
->name_state
== state
)
2060 if (!bacmp(&e
->data
.bdaddr
, bdaddr
))
2067 void hci_inquiry_cache_update_resolve(struct hci_dev
*hdev
,
2068 struct inquiry_entry
*ie
)
2070 struct discovery_state
*cache
= &hdev
->discovery
;
2071 struct list_head
*pos
= &cache
->resolve
;
2072 struct inquiry_entry
*p
;
2074 list_del(&ie
->list
);
2076 list_for_each_entry(p
, &cache
->resolve
, list
) {
2077 if (p
->name_state
!= NAME_PENDING
&&
2078 abs(p
->data
.rssi
) >= abs(ie
->data
.rssi
))
2083 list_add(&ie
->list
, pos
);
2086 bool hci_inquiry_cache_update(struct hci_dev
*hdev
, struct inquiry_data
*data
,
2087 bool name_known
, bool *ssp
)
2089 struct discovery_state
*cache
= &hdev
->discovery
;
2090 struct inquiry_entry
*ie
;
2092 BT_DBG("cache %p, %pMR", cache
, &data
->bdaddr
);
2094 hci_remove_remote_oob_data(hdev
, &data
->bdaddr
);
2096 *ssp
= data
->ssp_mode
;
2098 ie
= hci_inquiry_cache_lookup(hdev
, &data
->bdaddr
);
2100 if (ie
->data
.ssp_mode
)
2103 if (ie
->name_state
== NAME_NEEDED
&&
2104 data
->rssi
!= ie
->data
.rssi
) {
2105 ie
->data
.rssi
= data
->rssi
;
2106 hci_inquiry_cache_update_resolve(hdev
, ie
);
2112 /* Entry not in the cache. Add new one. */
2113 ie
= kzalloc(sizeof(struct inquiry_entry
), GFP_ATOMIC
);
2117 list_add(&ie
->all
, &cache
->all
);
2120 ie
->name_state
= NAME_KNOWN
;
2122 ie
->name_state
= NAME_NOT_KNOWN
;
2123 list_add(&ie
->list
, &cache
->unknown
);
2127 if (name_known
&& ie
->name_state
!= NAME_KNOWN
&&
2128 ie
->name_state
!= NAME_PENDING
) {
2129 ie
->name_state
= NAME_KNOWN
;
2130 list_del(&ie
->list
);
2133 memcpy(&ie
->data
, data
, sizeof(*data
));
2134 ie
->timestamp
= jiffies
;
2135 cache
->timestamp
= jiffies
;
2137 if (ie
->name_state
== NAME_NOT_KNOWN
)
2143 static int inquiry_cache_dump(struct hci_dev
*hdev
, int num
, __u8
*buf
)
2145 struct discovery_state
*cache
= &hdev
->discovery
;
2146 struct inquiry_info
*info
= (struct inquiry_info
*) buf
;
2147 struct inquiry_entry
*e
;
2150 list_for_each_entry(e
, &cache
->all
, all
) {
2151 struct inquiry_data
*data
= &e
->data
;
2156 bacpy(&info
->bdaddr
, &data
->bdaddr
);
2157 info
->pscan_rep_mode
= data
->pscan_rep_mode
;
2158 info
->pscan_period_mode
= data
->pscan_period_mode
;
2159 info
->pscan_mode
= data
->pscan_mode
;
2160 memcpy(info
->dev_class
, data
->dev_class
, 3);
2161 info
->clock_offset
= data
->clock_offset
;
2167 BT_DBG("cache %p, copied %d", cache
, copied
);
2171 static void hci_inq_req(struct hci_request
*req
, unsigned long opt
)
2173 struct hci_inquiry_req
*ir
= (struct hci_inquiry_req
*) opt
;
2174 struct hci_dev
*hdev
= req
->hdev
;
2175 struct hci_cp_inquiry cp
;
2177 BT_DBG("%s", hdev
->name
);
2179 if (test_bit(HCI_INQUIRY
, &hdev
->flags
))
2183 memcpy(&cp
.lap
, &ir
->lap
, 3);
2184 cp
.length
= ir
->length
;
2185 cp
.num_rsp
= ir
->num_rsp
;
2186 hci_req_add(req
, HCI_OP_INQUIRY
, sizeof(cp
), &cp
);
2189 int hci_inquiry(void __user
*arg
)
2191 __u8 __user
*ptr
= arg
;
2192 struct hci_inquiry_req ir
;
2193 struct hci_dev
*hdev
;
2194 int err
= 0, do_inquiry
= 0, max_rsp
;
2198 if (copy_from_user(&ir
, ptr
, sizeof(ir
)))
2201 hdev
= hci_dev_get(ir
.dev_id
);
2205 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2210 if (hdev
->dev_type
!= HCI_BREDR
) {
2215 if (!test_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
)) {
2221 if (inquiry_cache_age(hdev
) > INQUIRY_CACHE_AGE_MAX
||
2222 inquiry_cache_empty(hdev
) || ir
.flags
& IREQ_CACHE_FLUSH
) {
2223 hci_inquiry_cache_flush(hdev
);
2226 hci_dev_unlock(hdev
);
2228 timeo
= ir
.length
* msecs_to_jiffies(2000);
2231 err
= hci_req_sync(hdev
, hci_inq_req
, (unsigned long) &ir
,
2236 /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
2237 * cleared). If it is interrupted by a signal, return -EINTR.
2239 if (wait_on_bit(&hdev
->flags
, HCI_INQUIRY
,
2240 TASK_INTERRUPTIBLE
))
2244 /* for unlimited number of responses we will use buffer with
2247 max_rsp
= (ir
.num_rsp
== 0) ? 255 : ir
.num_rsp
;
2249 /* cache_dump can't sleep. Therefore we allocate temp buffer and then
2250 * copy it to the user space.
2252 buf
= kmalloc(sizeof(struct inquiry_info
) * max_rsp
, GFP_KERNEL
);
2259 ir
.num_rsp
= inquiry_cache_dump(hdev
, max_rsp
, buf
);
2260 hci_dev_unlock(hdev
);
2262 BT_DBG("num_rsp %d", ir
.num_rsp
);
2264 if (!copy_to_user(ptr
, &ir
, sizeof(ir
))) {
2266 if (copy_to_user(ptr
, buf
, sizeof(struct inquiry_info
) *
2279 static int hci_dev_do_open(struct hci_dev
*hdev
)
2283 BT_DBG("%s %p", hdev
->name
, hdev
);
2287 if (test_bit(HCI_UNREGISTER
, &hdev
->dev_flags
)) {
2292 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
2293 /* Check for rfkill but allow the HCI setup stage to
2294 * proceed (which in itself doesn't cause any RF activity).
2296 if (test_bit(HCI_RFKILLED
, &hdev
->dev_flags
)) {
2301 /* Check for valid public address or a configured static
2302 * random adddress, but let the HCI setup proceed to
2303 * be able to determine if there is a public address
2306 * In case of user channel usage, it is not important
2307 * if a public address or static random address is
2310 * This check is only valid for BR/EDR controllers
2311 * since AMP controllers do not have an address.
2313 if (!test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
) &&
2314 hdev
->dev_type
== HCI_BREDR
&&
2315 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
) &&
2316 !bacmp(&hdev
->static_addr
, BDADDR_ANY
)) {
2317 ret
= -EADDRNOTAVAIL
;
2322 if (test_bit(HCI_UP
, &hdev
->flags
)) {
2327 if (hdev
->open(hdev
)) {
2332 atomic_set(&hdev
->cmd_cnt
, 1);
2333 set_bit(HCI_INIT
, &hdev
->flags
);
2335 if (hdev
->setup
&& test_bit(HCI_SETUP
, &hdev
->dev_flags
))
2336 ret
= hdev
->setup(hdev
);
2339 if (test_bit(HCI_QUIRK_RAW_DEVICE
, &hdev
->quirks
))
2340 set_bit(HCI_RAW
, &hdev
->flags
);
2342 if (!test_bit(HCI_RAW
, &hdev
->flags
) &&
2343 !test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
))
2344 ret
= __hci_init(hdev
);
2347 clear_bit(HCI_INIT
, &hdev
->flags
);
2351 set_bit(HCI_RPA_EXPIRED
, &hdev
->dev_flags
);
2352 set_bit(HCI_UP
, &hdev
->flags
);
2353 hci_notify(hdev
, HCI_DEV_UP
);
2354 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
) &&
2355 !test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
) &&
2356 hdev
->dev_type
== HCI_BREDR
) {
2358 mgmt_powered(hdev
, 1);
2359 hci_dev_unlock(hdev
);
2362 /* Init failed, cleanup */
2363 flush_work(&hdev
->tx_work
);
2364 flush_work(&hdev
->cmd_work
);
2365 flush_work(&hdev
->rx_work
);
2367 skb_queue_purge(&hdev
->cmd_q
);
2368 skb_queue_purge(&hdev
->rx_q
);
2373 if (hdev
->sent_cmd
) {
2374 kfree_skb(hdev
->sent_cmd
);
2375 hdev
->sent_cmd
= NULL
;
2383 hci_req_unlock(hdev
);
2387 /* ---- HCI ioctl helpers ---- */
2389 int hci_dev_open(__u16 dev
)
2391 struct hci_dev
*hdev
;
2394 hdev
= hci_dev_get(dev
);
2398 /* We need to ensure that no other power on/off work is pending
2399 * before proceeding to call hci_dev_do_open. This is
2400 * particularly important if the setup procedure has not yet
2403 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2404 cancel_delayed_work(&hdev
->power_off
);
2406 /* After this call it is guaranteed that the setup procedure
2407 * has finished. This means that error conditions like RFKILL
2408 * or no valid public or static random address apply.
2410 flush_workqueue(hdev
->req_workqueue
);
2412 err
= hci_dev_do_open(hdev
);
2419 static int hci_dev_do_close(struct hci_dev
*hdev
)
2421 BT_DBG("%s %p", hdev
->name
, hdev
);
2423 cancel_delayed_work(&hdev
->power_off
);
2425 hci_req_cancel(hdev
, ENODEV
);
2428 if (!test_and_clear_bit(HCI_UP
, &hdev
->flags
)) {
2429 del_timer_sync(&hdev
->cmd_timer
);
2430 hci_req_unlock(hdev
);
2434 /* Flush RX and TX works */
2435 flush_work(&hdev
->tx_work
);
2436 flush_work(&hdev
->rx_work
);
2438 if (hdev
->discov_timeout
> 0) {
2439 cancel_delayed_work(&hdev
->discov_off
);
2440 hdev
->discov_timeout
= 0;
2441 clear_bit(HCI_DISCOVERABLE
, &hdev
->dev_flags
);
2442 clear_bit(HCI_LIMITED_DISCOVERABLE
, &hdev
->dev_flags
);
2445 if (test_and_clear_bit(HCI_SERVICE_CACHE
, &hdev
->dev_flags
))
2446 cancel_delayed_work(&hdev
->service_cache
);
2448 cancel_delayed_work_sync(&hdev
->le_scan_disable
);
2450 if (test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2451 cancel_delayed_work_sync(&hdev
->rpa_expired
);
2454 hci_inquiry_cache_flush(hdev
);
2455 hci_conn_hash_flush(hdev
);
2456 hci_pend_le_conns_clear(hdev
);
2457 hci_dev_unlock(hdev
);
2459 hci_notify(hdev
, HCI_DEV_DOWN
);
2465 skb_queue_purge(&hdev
->cmd_q
);
2466 atomic_set(&hdev
->cmd_cnt
, 1);
2467 if (!test_bit(HCI_RAW
, &hdev
->flags
) &&
2468 !test_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
) &&
2469 test_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
)) {
2470 set_bit(HCI_INIT
, &hdev
->flags
);
2471 __hci_req_sync(hdev
, hci_reset_req
, 0, HCI_CMD_TIMEOUT
);
2472 clear_bit(HCI_INIT
, &hdev
->flags
);
2475 /* flush cmd work */
2476 flush_work(&hdev
->cmd_work
);
2479 skb_queue_purge(&hdev
->rx_q
);
2480 skb_queue_purge(&hdev
->cmd_q
);
2481 skb_queue_purge(&hdev
->raw_q
);
2483 /* Drop last sent command */
2484 if (hdev
->sent_cmd
) {
2485 del_timer_sync(&hdev
->cmd_timer
);
2486 kfree_skb(hdev
->sent_cmd
);
2487 hdev
->sent_cmd
= NULL
;
2490 kfree_skb(hdev
->recv_evt
);
2491 hdev
->recv_evt
= NULL
;
2493 /* After this point our queues are empty
2494 * and no tasks are scheduled. */
2499 hdev
->dev_flags
&= ~HCI_PERSISTENT_MASK
;
2501 if (!test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
)) {
2502 if (hdev
->dev_type
== HCI_BREDR
) {
2504 mgmt_powered(hdev
, 0);
2505 hci_dev_unlock(hdev
);
2509 /* Controller radio is available but is currently powered down */
2510 hdev
->amp_status
= AMP_STATUS_POWERED_DOWN
;
2512 memset(hdev
->eir
, 0, sizeof(hdev
->eir
));
2513 memset(hdev
->dev_class
, 0, sizeof(hdev
->dev_class
));
2514 bacpy(&hdev
->random_addr
, BDADDR_ANY
);
2516 hci_req_unlock(hdev
);
2522 int hci_dev_close(__u16 dev
)
2524 struct hci_dev
*hdev
;
2527 hdev
= hci_dev_get(dev
);
2531 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2536 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2537 cancel_delayed_work(&hdev
->power_off
);
2539 err
= hci_dev_do_close(hdev
);
2546 int hci_dev_reset(__u16 dev
)
2548 struct hci_dev
*hdev
;
2551 hdev
= hci_dev_get(dev
);
2557 if (!test_bit(HCI_UP
, &hdev
->flags
)) {
2562 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2568 skb_queue_purge(&hdev
->rx_q
);
2569 skb_queue_purge(&hdev
->cmd_q
);
2572 hci_inquiry_cache_flush(hdev
);
2573 hci_conn_hash_flush(hdev
);
2574 hci_dev_unlock(hdev
);
2579 atomic_set(&hdev
->cmd_cnt
, 1);
2580 hdev
->acl_cnt
= 0; hdev
->sco_cnt
= 0; hdev
->le_cnt
= 0;
2582 if (!test_bit(HCI_RAW
, &hdev
->flags
))
2583 ret
= __hci_req_sync(hdev
, hci_reset_req
, 0, HCI_INIT_TIMEOUT
);
2586 hci_req_unlock(hdev
);
2591 int hci_dev_reset_stat(__u16 dev
)
2593 struct hci_dev
*hdev
;
2596 hdev
= hci_dev_get(dev
);
2600 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2605 memset(&hdev
->stat
, 0, sizeof(struct hci_dev_stats
));
2612 int hci_dev_cmd(unsigned int cmd
, void __user
*arg
)
2614 struct hci_dev
*hdev
;
2615 struct hci_dev_req dr
;
2618 if (copy_from_user(&dr
, arg
, sizeof(dr
)))
2621 hdev
= hci_dev_get(dr
.dev_id
);
2625 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
2630 if (hdev
->dev_type
!= HCI_BREDR
) {
2635 if (!test_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
)) {
2642 err
= hci_req_sync(hdev
, hci_auth_req
, dr
.dev_opt
,
2647 if (!lmp_encrypt_capable(hdev
)) {
2652 if (!test_bit(HCI_AUTH
, &hdev
->flags
)) {
2653 /* Auth must be enabled first */
2654 err
= hci_req_sync(hdev
, hci_auth_req
, dr
.dev_opt
,
2660 err
= hci_req_sync(hdev
, hci_encrypt_req
, dr
.dev_opt
,
2665 err
= hci_req_sync(hdev
, hci_scan_req
, dr
.dev_opt
,
2670 err
= hci_req_sync(hdev
, hci_linkpol_req
, dr
.dev_opt
,
2674 case HCISETLINKMODE
:
2675 hdev
->link_mode
= ((__u16
) dr
.dev_opt
) &
2676 (HCI_LM_MASTER
| HCI_LM_ACCEPT
);
2680 hdev
->pkt_type
= (__u16
) dr
.dev_opt
;
2684 hdev
->acl_mtu
= *((__u16
*) &dr
.dev_opt
+ 1);
2685 hdev
->acl_pkts
= *((__u16
*) &dr
.dev_opt
+ 0);
2689 hdev
->sco_mtu
= *((__u16
*) &dr
.dev_opt
+ 1);
2690 hdev
->sco_pkts
= *((__u16
*) &dr
.dev_opt
+ 0);
2703 int hci_get_dev_list(void __user
*arg
)
2705 struct hci_dev
*hdev
;
2706 struct hci_dev_list_req
*dl
;
2707 struct hci_dev_req
*dr
;
2708 int n
= 0, size
, err
;
2711 if (get_user(dev_num
, (__u16 __user
*) arg
))
2714 if (!dev_num
|| dev_num
> (PAGE_SIZE
* 2) / sizeof(*dr
))
2717 size
= sizeof(*dl
) + dev_num
* sizeof(*dr
);
2719 dl
= kzalloc(size
, GFP_KERNEL
);
2725 read_lock(&hci_dev_list_lock
);
2726 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
2727 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2728 cancel_delayed_work(&hdev
->power_off
);
2730 if (!test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2731 set_bit(HCI_PAIRABLE
, &hdev
->dev_flags
);
2733 (dr
+ n
)->dev_id
= hdev
->id
;
2734 (dr
+ n
)->dev_opt
= hdev
->flags
;
2739 read_unlock(&hci_dev_list_lock
);
2742 size
= sizeof(*dl
) + n
* sizeof(*dr
);
2744 err
= copy_to_user(arg
, dl
, size
);
2747 return err
? -EFAULT
: 0;
2750 int hci_get_dev_info(void __user
*arg
)
2752 struct hci_dev
*hdev
;
2753 struct hci_dev_info di
;
2756 if (copy_from_user(&di
, arg
, sizeof(di
)))
2759 hdev
= hci_dev_get(di
.dev_id
);
2763 if (test_and_clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
))
2764 cancel_delayed_work_sync(&hdev
->power_off
);
2766 if (!test_bit(HCI_MGMT
, &hdev
->dev_flags
))
2767 set_bit(HCI_PAIRABLE
, &hdev
->dev_flags
);
2769 strcpy(di
.name
, hdev
->name
);
2770 di
.bdaddr
= hdev
->bdaddr
;
2771 di
.type
= (hdev
->bus
& 0x0f) | ((hdev
->dev_type
& 0x03) << 4);
2772 di
.flags
= hdev
->flags
;
2773 di
.pkt_type
= hdev
->pkt_type
;
2774 if (lmp_bredr_capable(hdev
)) {
2775 di
.acl_mtu
= hdev
->acl_mtu
;
2776 di
.acl_pkts
= hdev
->acl_pkts
;
2777 di
.sco_mtu
= hdev
->sco_mtu
;
2778 di
.sco_pkts
= hdev
->sco_pkts
;
2780 di
.acl_mtu
= hdev
->le_mtu
;
2781 di
.acl_pkts
= hdev
->le_pkts
;
2785 di
.link_policy
= hdev
->link_policy
;
2786 di
.link_mode
= hdev
->link_mode
;
2788 memcpy(&di
.stat
, &hdev
->stat
, sizeof(di
.stat
));
2789 memcpy(&di
.features
, &hdev
->features
, sizeof(di
.features
));
2791 if (copy_to_user(arg
, &di
, sizeof(di
)))
2799 /* ---- Interface to HCI drivers ---- */
2801 static int hci_rfkill_set_block(void *data
, bool blocked
)
2803 struct hci_dev
*hdev
= data
;
2805 BT_DBG("%p name %s blocked %d", hdev
, hdev
->name
, blocked
);
2807 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
))
2811 set_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
2812 if (!test_bit(HCI_SETUP
, &hdev
->dev_flags
))
2813 hci_dev_do_close(hdev
);
2815 clear_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
2821 static const struct rfkill_ops hci_rfkill_ops
= {
2822 .set_block
= hci_rfkill_set_block
,
2825 static void hci_power_on(struct work_struct
*work
)
2827 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, power_on
);
2830 BT_DBG("%s", hdev
->name
);
2832 err
= hci_dev_do_open(hdev
);
2834 mgmt_set_powered_failed(hdev
, err
);
2838 /* During the HCI setup phase, a few error conditions are
2839 * ignored and they need to be checked now. If they are still
2840 * valid, it is important to turn the device back off.
2842 if (test_bit(HCI_RFKILLED
, &hdev
->dev_flags
) ||
2843 (hdev
->dev_type
== HCI_BREDR
&&
2844 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
) &&
2845 !bacmp(&hdev
->static_addr
, BDADDR_ANY
))) {
2846 clear_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
);
2847 hci_dev_do_close(hdev
);
2848 } else if (test_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
)) {
2849 queue_delayed_work(hdev
->req_workqueue
, &hdev
->power_off
,
2850 HCI_AUTO_OFF_TIMEOUT
);
2853 if (test_and_clear_bit(HCI_SETUP
, &hdev
->dev_flags
))
2854 mgmt_index_added(hdev
);
2857 static void hci_power_off(struct work_struct
*work
)
2859 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
,
2862 BT_DBG("%s", hdev
->name
);
2864 hci_dev_do_close(hdev
);
2867 static void hci_discov_off(struct work_struct
*work
)
2869 struct hci_dev
*hdev
;
2871 hdev
= container_of(work
, struct hci_dev
, discov_off
.work
);
2873 BT_DBG("%s", hdev
->name
);
2875 mgmt_discoverable_timeout(hdev
);
2878 void hci_uuids_clear(struct hci_dev
*hdev
)
2880 struct bt_uuid
*uuid
, *tmp
;
2882 list_for_each_entry_safe(uuid
, tmp
, &hdev
->uuids
, list
) {
2883 list_del(&uuid
->list
);
2888 void hci_link_keys_clear(struct hci_dev
*hdev
)
2890 struct list_head
*p
, *n
;
2892 list_for_each_safe(p
, n
, &hdev
->link_keys
) {
2893 struct link_key
*key
;
2895 key
= list_entry(p
, struct link_key
, list
);
2902 void hci_smp_ltks_clear(struct hci_dev
*hdev
)
2904 struct smp_ltk
*k
, *tmp
;
2906 list_for_each_entry_safe(k
, tmp
, &hdev
->long_term_keys
, list
) {
2912 void hci_smp_irks_clear(struct hci_dev
*hdev
)
2914 struct smp_irk
*k
, *tmp
;
2916 list_for_each_entry_safe(k
, tmp
, &hdev
->identity_resolving_keys
, list
) {
2922 struct link_key
*hci_find_link_key(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
2926 list_for_each_entry(k
, &hdev
->link_keys
, list
)
2927 if (bacmp(bdaddr
, &k
->bdaddr
) == 0)
2933 static bool hci_persistent_key(struct hci_dev
*hdev
, struct hci_conn
*conn
,
2934 u8 key_type
, u8 old_key_type
)
2937 if (key_type
< 0x03)
2940 /* Debug keys are insecure so don't store them persistently */
2941 if (key_type
== HCI_LK_DEBUG_COMBINATION
)
2944 /* Changed combination key and there's no previous one */
2945 if (key_type
== HCI_LK_CHANGED_COMBINATION
&& old_key_type
== 0xff)
2948 /* Security mode 3 case */
2952 /* Neither local nor remote side had no-bonding as requirement */
2953 if (conn
->auth_type
> 0x01 && conn
->remote_auth
> 0x01)
2956 /* Local side had dedicated bonding as requirement */
2957 if (conn
->auth_type
== 0x02 || conn
->auth_type
== 0x03)
2960 /* Remote side had dedicated bonding as requirement */
2961 if (conn
->remote_auth
== 0x02 || conn
->remote_auth
== 0x03)
2964 /* If none of the above criteria match, then don't store the key
2969 static bool ltk_type_master(u8 type
)
2971 if (type
== HCI_SMP_STK
|| type
== HCI_SMP_LTK
)
2977 struct smp_ltk
*hci_find_ltk(struct hci_dev
*hdev
, __le16 ediv
, __le64 rand
,
2982 list_for_each_entry(k
, &hdev
->long_term_keys
, list
) {
2983 if (k
->ediv
!= ediv
|| k
->rand
!= rand
)
2986 if (ltk_type_master(k
->type
) != master
)
2995 struct smp_ltk
*hci_find_ltk_by_addr(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
2996 u8 addr_type
, bool master
)
3000 list_for_each_entry(k
, &hdev
->long_term_keys
, list
)
3001 if (addr_type
== k
->bdaddr_type
&&
3002 bacmp(bdaddr
, &k
->bdaddr
) == 0 &&
3003 ltk_type_master(k
->type
) == master
)
3009 struct smp_irk
*hci_find_irk_by_rpa(struct hci_dev
*hdev
, bdaddr_t
*rpa
)
3011 struct smp_irk
*irk
;
3013 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
3014 if (!bacmp(&irk
->rpa
, rpa
))
3018 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
3019 if (smp_irk_matches(hdev
->tfm_aes
, irk
->val
, rpa
)) {
3020 bacpy(&irk
->rpa
, rpa
);
3028 struct smp_irk
*hci_find_irk_by_addr(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3031 struct smp_irk
*irk
;
3033 /* Identity Address must be public or static random */
3034 if (addr_type
== ADDR_LE_DEV_RANDOM
&& (bdaddr
->b
[5] & 0xc0) != 0xc0)
3037 list_for_each_entry(irk
, &hdev
->identity_resolving_keys
, list
) {
3038 if (addr_type
== irk
->addr_type
&&
3039 bacmp(bdaddr
, &irk
->bdaddr
) == 0)
3046 int hci_add_link_key(struct hci_dev
*hdev
, struct hci_conn
*conn
, int new_key
,
3047 bdaddr_t
*bdaddr
, u8
*val
, u8 type
, u8 pin_len
)
3049 struct link_key
*key
, *old_key
;
3053 old_key
= hci_find_link_key(hdev
, bdaddr
);
3055 old_key_type
= old_key
->type
;
3058 old_key_type
= conn
? conn
->key_type
: 0xff;
3059 key
= kzalloc(sizeof(*key
), GFP_KERNEL
);
3062 list_add(&key
->list
, &hdev
->link_keys
);
3065 BT_DBG("%s key for %pMR type %u", hdev
->name
, bdaddr
, type
);
3067 /* Some buggy controller combinations generate a changed
3068 * combination key for legacy pairing even when there's no
3070 if (type
== HCI_LK_CHANGED_COMBINATION
&&
3071 (!conn
|| conn
->remote_auth
== 0xff) && old_key_type
== 0xff) {
3072 type
= HCI_LK_COMBINATION
;
3074 conn
->key_type
= type
;
3077 bacpy(&key
->bdaddr
, bdaddr
);
3078 memcpy(key
->val
, val
, HCI_LINK_KEY_SIZE
);
3079 key
->pin_len
= pin_len
;
3081 if (type
== HCI_LK_CHANGED_COMBINATION
)
3082 key
->type
= old_key_type
;
3089 persistent
= hci_persistent_key(hdev
, conn
, type
, old_key_type
);
3091 mgmt_new_link_key(hdev
, key
, persistent
);
3094 conn
->flush_key
= !persistent
;
3099 struct smp_ltk
*hci_add_ltk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3100 u8 addr_type
, u8 type
, u8 authenticated
,
3101 u8 tk
[16], u8 enc_size
, __le16 ediv
, __le64 rand
)
3103 struct smp_ltk
*key
, *old_key
;
3104 bool master
= ltk_type_master(type
);
3106 old_key
= hci_find_ltk_by_addr(hdev
, bdaddr
, addr_type
, master
);
3110 key
= kzalloc(sizeof(*key
), GFP_KERNEL
);
3113 list_add(&key
->list
, &hdev
->long_term_keys
);
3116 bacpy(&key
->bdaddr
, bdaddr
);
3117 key
->bdaddr_type
= addr_type
;
3118 memcpy(key
->val
, tk
, sizeof(key
->val
));
3119 key
->authenticated
= authenticated
;
3122 key
->enc_size
= enc_size
;
3128 struct smp_irk
*hci_add_irk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3129 u8 addr_type
, u8 val
[16], bdaddr_t
*rpa
)
3131 struct smp_irk
*irk
;
3133 irk
= hci_find_irk_by_addr(hdev
, bdaddr
, addr_type
);
3135 irk
= kzalloc(sizeof(*irk
), GFP_KERNEL
);
3139 bacpy(&irk
->bdaddr
, bdaddr
);
3140 irk
->addr_type
= addr_type
;
3142 list_add(&irk
->list
, &hdev
->identity_resolving_keys
);
3145 memcpy(irk
->val
, val
, 16);
3146 bacpy(&irk
->rpa
, rpa
);
3151 int hci_remove_link_key(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
3153 struct link_key
*key
;
3155 key
= hci_find_link_key(hdev
, bdaddr
);
3159 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3161 list_del(&key
->list
);
3167 int hci_remove_ltk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 bdaddr_type
)
3169 struct smp_ltk
*k
, *tmp
;
3172 list_for_each_entry_safe(k
, tmp
, &hdev
->long_term_keys
, list
) {
3173 if (bacmp(bdaddr
, &k
->bdaddr
) || k
->bdaddr_type
!= bdaddr_type
)
3176 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3183 return removed
? 0 : -ENOENT
;
3186 void hci_remove_irk(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 addr_type
)
3188 struct smp_irk
*k
, *tmp
;
3190 list_for_each_entry_safe(k
, tmp
, &hdev
->identity_resolving_keys
, list
) {
3191 if (bacmp(bdaddr
, &k
->bdaddr
) || k
->addr_type
!= addr_type
)
3194 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3201 /* HCI command timer function */
3202 static void hci_cmd_timeout(unsigned long arg
)
3204 struct hci_dev
*hdev
= (void *) arg
;
3206 if (hdev
->sent_cmd
) {
3207 struct hci_command_hdr
*sent
= (void *) hdev
->sent_cmd
->data
;
3208 u16 opcode
= __le16_to_cpu(sent
->opcode
);
3210 BT_ERR("%s command 0x%4.4x tx timeout", hdev
->name
, opcode
);
3212 BT_ERR("%s command tx timeout", hdev
->name
);
3215 atomic_set(&hdev
->cmd_cnt
, 1);
3216 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
3219 struct oob_data
*hci_find_remote_oob_data(struct hci_dev
*hdev
,
3222 struct oob_data
*data
;
3224 list_for_each_entry(data
, &hdev
->remote_oob_data
, list
)
3225 if (bacmp(bdaddr
, &data
->bdaddr
) == 0)
3231 int hci_remove_remote_oob_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
)
3233 struct oob_data
*data
;
3235 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3239 BT_DBG("%s removing %pMR", hdev
->name
, bdaddr
);
3241 list_del(&data
->list
);
3247 void hci_remote_oob_data_clear(struct hci_dev
*hdev
)
3249 struct oob_data
*data
, *n
;
3251 list_for_each_entry_safe(data
, n
, &hdev
->remote_oob_data
, list
) {
3252 list_del(&data
->list
);
3257 int hci_add_remote_oob_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3258 u8
*hash
, u8
*randomizer
)
3260 struct oob_data
*data
;
3262 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3264 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3268 bacpy(&data
->bdaddr
, bdaddr
);
3269 list_add(&data
->list
, &hdev
->remote_oob_data
);
3272 memcpy(data
->hash192
, hash
, sizeof(data
->hash192
));
3273 memcpy(data
->randomizer192
, randomizer
, sizeof(data
->randomizer192
));
3275 memset(data
->hash256
, 0, sizeof(data
->hash256
));
3276 memset(data
->randomizer256
, 0, sizeof(data
->randomizer256
));
3278 BT_DBG("%s for %pMR", hdev
->name
, bdaddr
);
3283 int hci_add_remote_oob_ext_data(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3284 u8
*hash192
, u8
*randomizer192
,
3285 u8
*hash256
, u8
*randomizer256
)
3287 struct oob_data
*data
;
3289 data
= hci_find_remote_oob_data(hdev
, bdaddr
);
3291 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3295 bacpy(&data
->bdaddr
, bdaddr
);
3296 list_add(&data
->list
, &hdev
->remote_oob_data
);
3299 memcpy(data
->hash192
, hash192
, sizeof(data
->hash192
));
3300 memcpy(data
->randomizer192
, randomizer192
, sizeof(data
->randomizer192
));
3302 memcpy(data
->hash256
, hash256
, sizeof(data
->hash256
));
3303 memcpy(data
->randomizer256
, randomizer256
, sizeof(data
->randomizer256
));
3305 BT_DBG("%s for %pMR", hdev
->name
, bdaddr
);
3310 struct bdaddr_list
*hci_blacklist_lookup(struct hci_dev
*hdev
,
3311 bdaddr_t
*bdaddr
, u8 type
)
3313 struct bdaddr_list
*b
;
3315 list_for_each_entry(b
, &hdev
->blacklist
, list
) {
3316 if (!bacmp(&b
->bdaddr
, bdaddr
) && b
->bdaddr_type
== type
)
3323 static void hci_blacklist_clear(struct hci_dev
*hdev
)
3325 struct list_head
*p
, *n
;
3327 list_for_each_safe(p
, n
, &hdev
->blacklist
) {
3328 struct bdaddr_list
*b
= list_entry(p
, struct bdaddr_list
, list
);
3335 int hci_blacklist_add(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3337 struct bdaddr_list
*entry
;
3339 if (!bacmp(bdaddr
, BDADDR_ANY
))
3342 if (hci_blacklist_lookup(hdev
, bdaddr
, type
))
3345 entry
= kzalloc(sizeof(struct bdaddr_list
), GFP_KERNEL
);
3349 bacpy(&entry
->bdaddr
, bdaddr
);
3350 entry
->bdaddr_type
= type
;
3352 list_add(&entry
->list
, &hdev
->blacklist
);
3354 return mgmt_device_blocked(hdev
, bdaddr
, type
);
3357 int hci_blacklist_del(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3359 struct bdaddr_list
*entry
;
3361 if (!bacmp(bdaddr
, BDADDR_ANY
)) {
3362 hci_blacklist_clear(hdev
);
3366 entry
= hci_blacklist_lookup(hdev
, bdaddr
, type
);
3370 list_del(&entry
->list
);
3373 return mgmt_device_unblocked(hdev
, bdaddr
, type
);
3376 struct bdaddr_list
*hci_white_list_lookup(struct hci_dev
*hdev
,
3377 bdaddr_t
*bdaddr
, u8 type
)
3379 struct bdaddr_list
*b
;
3381 list_for_each_entry(b
, &hdev
->le_white_list
, list
) {
3382 if (!bacmp(&b
->bdaddr
, bdaddr
) && b
->bdaddr_type
== type
)
3389 void hci_white_list_clear(struct hci_dev
*hdev
)
3391 struct list_head
*p
, *n
;
3393 list_for_each_safe(p
, n
, &hdev
->le_white_list
) {
3394 struct bdaddr_list
*b
= list_entry(p
, struct bdaddr_list
, list
);
3401 int hci_white_list_add(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3403 struct bdaddr_list
*entry
;
3405 if (!bacmp(bdaddr
, BDADDR_ANY
))
3408 entry
= kzalloc(sizeof(struct bdaddr_list
), GFP_KERNEL
);
3412 bacpy(&entry
->bdaddr
, bdaddr
);
3413 entry
->bdaddr_type
= type
;
3415 list_add(&entry
->list
, &hdev
->le_white_list
);
3420 int hci_white_list_del(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, u8 type
)
3422 struct bdaddr_list
*entry
;
3424 if (!bacmp(bdaddr
, BDADDR_ANY
))
3427 entry
= hci_white_list_lookup(hdev
, bdaddr
, type
);
3431 list_del(&entry
->list
);
3437 /* This function requires the caller holds hdev->lock */
3438 struct hci_conn_params
*hci_conn_params_lookup(struct hci_dev
*hdev
,
3439 bdaddr_t
*addr
, u8 addr_type
)
3441 struct hci_conn_params
*params
;
3443 list_for_each_entry(params
, &hdev
->le_conn_params
, list
) {
3444 if (bacmp(¶ms
->addr
, addr
) == 0 &&
3445 params
->addr_type
== addr_type
) {
3453 static bool is_connected(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 type
)
3455 struct hci_conn
*conn
;
3457 conn
= hci_conn_hash_lookup_ba(hdev
, LE_LINK
, addr
);
3461 if (conn
->dst_type
!= type
)
3464 if (conn
->state
!= BT_CONNECTED
)
3470 static bool is_identity_address(bdaddr_t
*addr
, u8 addr_type
)
3472 if (addr_type
== ADDR_LE_DEV_PUBLIC
)
3475 /* Check for Random Static address type */
3476 if ((addr
->b
[5] & 0xc0) == 0xc0)
3482 /* This function requires the caller holds hdev->lock */
3483 int hci_conn_params_add(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
,
3484 u8 auto_connect
, u16 conn_min_interval
,
3485 u16 conn_max_interval
)
3487 struct hci_conn_params
*params
;
3489 if (!is_identity_address(addr
, addr_type
))
3492 params
= hci_conn_params_lookup(hdev
, addr
, addr_type
);
3496 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3498 BT_ERR("Out of memory");
3502 bacpy(¶ms
->addr
, addr
);
3503 params
->addr_type
= addr_type
;
3505 list_add(¶ms
->list
, &hdev
->le_conn_params
);
3508 params
->conn_min_interval
= conn_min_interval
;
3509 params
->conn_max_interval
= conn_max_interval
;
3510 params
->auto_connect
= auto_connect
;
3512 switch (auto_connect
) {
3513 case HCI_AUTO_CONN_DISABLED
:
3514 case HCI_AUTO_CONN_LINK_LOSS
:
3515 hci_pend_le_conn_del(hdev
, addr
, addr_type
);
3517 case HCI_AUTO_CONN_ALWAYS
:
3518 if (!is_connected(hdev
, addr
, addr_type
))
3519 hci_pend_le_conn_add(hdev
, addr
, addr_type
);
3523 BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
3524 "conn_max_interval 0x%.4x", addr
, addr_type
, auto_connect
,
3525 conn_min_interval
, conn_max_interval
);
3530 /* This function requires the caller holds hdev->lock */
3531 void hci_conn_params_del(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
)
3533 struct hci_conn_params
*params
;
3535 params
= hci_conn_params_lookup(hdev
, addr
, addr_type
);
3539 hci_pend_le_conn_del(hdev
, addr
, addr_type
);
3541 list_del(¶ms
->list
);
3544 BT_DBG("addr %pMR (type %u)", addr
, addr_type
);
3547 /* This function requires the caller holds hdev->lock */
3548 void hci_conn_params_clear(struct hci_dev
*hdev
)
3550 struct hci_conn_params
*params
, *tmp
;
3552 list_for_each_entry_safe(params
, tmp
, &hdev
->le_conn_params
, list
) {
3553 list_del(¶ms
->list
);
3557 BT_DBG("All LE connection parameters were removed");
3560 /* This function requires the caller holds hdev->lock */
3561 struct bdaddr_list
*hci_pend_le_conn_lookup(struct hci_dev
*hdev
,
3562 bdaddr_t
*addr
, u8 addr_type
)
3564 struct bdaddr_list
*entry
;
3566 list_for_each_entry(entry
, &hdev
->pend_le_conns
, list
) {
3567 if (bacmp(&entry
->bdaddr
, addr
) == 0 &&
3568 entry
->bdaddr_type
== addr_type
)
3575 /* This function requires the caller holds hdev->lock */
3576 void hci_pend_le_conn_add(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
)
3578 struct bdaddr_list
*entry
;
3580 entry
= hci_pend_le_conn_lookup(hdev
, addr
, addr_type
);
3584 entry
= kzalloc(sizeof(*entry
), GFP_KERNEL
);
3586 BT_ERR("Out of memory");
3590 bacpy(&entry
->bdaddr
, addr
);
3591 entry
->bdaddr_type
= addr_type
;
3593 list_add(&entry
->list
, &hdev
->pend_le_conns
);
3595 BT_DBG("addr %pMR (type %u)", addr
, addr_type
);
3598 hci_update_background_scan(hdev
);
3601 /* This function requires the caller holds hdev->lock */
3602 void hci_pend_le_conn_del(struct hci_dev
*hdev
, bdaddr_t
*addr
, u8 addr_type
)
3604 struct bdaddr_list
*entry
;
3606 entry
= hci_pend_le_conn_lookup(hdev
, addr
, addr_type
);
3610 list_del(&entry
->list
);
3613 BT_DBG("addr %pMR (type %u)", addr
, addr_type
);
3616 hci_update_background_scan(hdev
);
3619 /* This function requires the caller holds hdev->lock */
3620 void hci_pend_le_conns_clear(struct hci_dev
*hdev
)
3622 struct bdaddr_list
*entry
, *tmp
;
3624 list_for_each_entry_safe(entry
, tmp
, &hdev
->pend_le_conns
, list
) {
3625 list_del(&entry
->list
);
3629 BT_DBG("All LE pending connections cleared");
3632 static void inquiry_complete(struct hci_dev
*hdev
, u8 status
)
3635 BT_ERR("Failed to start inquiry: status %d", status
);
3638 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3639 hci_dev_unlock(hdev
);
3644 static void le_scan_disable_work_complete(struct hci_dev
*hdev
, u8 status
)
3646 /* General inquiry access code (GIAC) */
3647 u8 lap
[3] = { 0x33, 0x8b, 0x9e };
3648 struct hci_request req
;
3649 struct hci_cp_inquiry cp
;
3653 BT_ERR("Failed to disable LE scanning: status %d", status
);
3657 switch (hdev
->discovery
.type
) {
3658 case DISCOV_TYPE_LE
:
3660 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3661 hci_dev_unlock(hdev
);
3664 case DISCOV_TYPE_INTERLEAVED
:
3665 hci_req_init(&req
, hdev
);
3667 memset(&cp
, 0, sizeof(cp
));
3668 memcpy(&cp
.lap
, lap
, sizeof(cp
.lap
));
3669 cp
.length
= DISCOV_INTERLEAVED_INQUIRY_LEN
;
3670 hci_req_add(&req
, HCI_OP_INQUIRY
, sizeof(cp
), &cp
);
3674 hci_inquiry_cache_flush(hdev
);
3676 err
= hci_req_run(&req
, inquiry_complete
);
3678 BT_ERR("Inquiry request failed: err %d", err
);
3679 hci_discovery_set_state(hdev
, DISCOVERY_STOPPED
);
3682 hci_dev_unlock(hdev
);
3687 static void le_scan_disable_work(struct work_struct
*work
)
3689 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
,
3690 le_scan_disable
.work
);
3691 struct hci_request req
;
3694 BT_DBG("%s", hdev
->name
);
3696 hci_req_init(&req
, hdev
);
3698 hci_req_add_le_scan_disable(&req
);
3700 err
= hci_req_run(&req
, le_scan_disable_work_complete
);
3702 BT_ERR("Disable LE scanning request failed: err %d", err
);
3705 static void set_random_addr(struct hci_request
*req
, bdaddr_t
*rpa
)
3707 struct hci_dev
*hdev
= req
->hdev
;
3709 /* If we're advertising or initiating an LE connection we can't
3710 * go ahead and change the random address at this time. This is
3711 * because the eventual initiator address used for the
3712 * subsequently created connection will be undefined (some
3713 * controllers use the new address and others the one we had
3714 * when the operation started).
3716 * In this kind of scenario skip the update and let the random
3717 * address be updated at the next cycle.
3719 if (test_bit(HCI_ADVERTISING
, &hdev
->dev_flags
) ||
3720 hci_conn_hash_lookup_state(hdev
, LE_LINK
, BT_CONNECT
)) {
3721 BT_DBG("Deferring random address update");
3725 hci_req_add(req
, HCI_OP_LE_SET_RANDOM_ADDR
, 6, rpa
);
3728 int hci_update_random_address(struct hci_request
*req
, bool require_privacy
,
3731 struct hci_dev
*hdev
= req
->hdev
;
3734 /* If privacy is enabled use a resolvable private address. If
3735 * current RPA has expired or there is something else than
3736 * the current RPA in use, then generate a new one.
3738 if (test_bit(HCI_PRIVACY
, &hdev
->dev_flags
)) {
3741 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3743 if (!test_and_clear_bit(HCI_RPA_EXPIRED
, &hdev
->dev_flags
) &&
3744 !bacmp(&hdev
->random_addr
, &hdev
->rpa
))
3747 err
= smp_generate_rpa(hdev
->tfm_aes
, hdev
->irk
, &hdev
->rpa
);
3749 BT_ERR("%s failed to generate new RPA", hdev
->name
);
3753 set_random_addr(req
, &hdev
->rpa
);
3755 to
= msecs_to_jiffies(hdev
->rpa_timeout
* 1000);
3756 queue_delayed_work(hdev
->workqueue
, &hdev
->rpa_expired
, to
);
3761 /* In case of required privacy without resolvable private address,
3762 * use an unresolvable private address. This is useful for active
3763 * scanning and non-connectable advertising.
3765 if (require_privacy
) {
3768 get_random_bytes(&urpa
, 6);
3769 urpa
.b
[5] &= 0x3f; /* Clear two most significant bits */
3771 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3772 set_random_addr(req
, &urpa
);
3776 /* If forcing static address is in use or there is no public
3777 * address use the static address as random address (but skip
3778 * the HCI command if the current random address is already the
3781 if (test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dev_flags
) ||
3782 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
)) {
3783 *own_addr_type
= ADDR_LE_DEV_RANDOM
;
3784 if (bacmp(&hdev
->static_addr
, &hdev
->random_addr
))
3785 hci_req_add(req
, HCI_OP_LE_SET_RANDOM_ADDR
, 6,
3786 &hdev
->static_addr
);
3790 /* Neither privacy nor static address is being used so use a
3793 *own_addr_type
= ADDR_LE_DEV_PUBLIC
;
3798 /* Copy the Identity Address of the controller.
3800 * If the controller has a public BD_ADDR, then by default use that one.
3801 * If this is a LE only controller without a public address, default to
3802 * the static random address.
3804 * For debugging purposes it is possible to force controllers with a
3805 * public address to use the static random address instead.
3807 void hci_copy_identity_address(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
,
3810 if (test_bit(HCI_FORCE_STATIC_ADDR
, &hdev
->dev_flags
) ||
3811 !bacmp(&hdev
->bdaddr
, BDADDR_ANY
)) {
3812 bacpy(bdaddr
, &hdev
->static_addr
);
3813 *bdaddr_type
= ADDR_LE_DEV_RANDOM
;
3815 bacpy(bdaddr
, &hdev
->bdaddr
);
3816 *bdaddr_type
= ADDR_LE_DEV_PUBLIC
;
3820 /* Alloc HCI device */
3821 struct hci_dev
*hci_alloc_dev(void)
3823 struct hci_dev
*hdev
;
3825 hdev
= kzalloc(sizeof(struct hci_dev
), GFP_KERNEL
);
3829 hdev
->pkt_type
= (HCI_DM1
| HCI_DH1
| HCI_HV1
);
3830 hdev
->esco_type
= (ESCO_HV1
);
3831 hdev
->link_mode
= (HCI_LM_ACCEPT
);
3832 hdev
->num_iac
= 0x01; /* One IAC support is mandatory */
3833 hdev
->io_capability
= 0x03; /* No Input No Output */
3834 hdev
->inq_tx_power
= HCI_TX_POWER_INVALID
;
3835 hdev
->adv_tx_power
= HCI_TX_POWER_INVALID
;
3837 hdev
->sniff_max_interval
= 800;
3838 hdev
->sniff_min_interval
= 80;
3840 hdev
->le_adv_channel_map
= 0x07;
3841 hdev
->le_scan_interval
= 0x0060;
3842 hdev
->le_scan_window
= 0x0030;
3843 hdev
->le_conn_min_interval
= 0x0028;
3844 hdev
->le_conn_max_interval
= 0x0038;
3846 hdev
->rpa_timeout
= HCI_DEFAULT_RPA_TIMEOUT
;
3847 hdev
->discov_interleaved_timeout
= DISCOV_INTERLEAVED_TIMEOUT
;
3848 hdev
->conn_info_min_age
= DEFAULT_CONN_INFO_MIN_AGE
;
3849 hdev
->conn_info_max_age
= DEFAULT_CONN_INFO_MAX_AGE
;
3851 mutex_init(&hdev
->lock
);
3852 mutex_init(&hdev
->req_lock
);
3854 INIT_LIST_HEAD(&hdev
->mgmt_pending
);
3855 INIT_LIST_HEAD(&hdev
->blacklist
);
3856 INIT_LIST_HEAD(&hdev
->uuids
);
3857 INIT_LIST_HEAD(&hdev
->link_keys
);
3858 INIT_LIST_HEAD(&hdev
->long_term_keys
);
3859 INIT_LIST_HEAD(&hdev
->identity_resolving_keys
);
3860 INIT_LIST_HEAD(&hdev
->remote_oob_data
);
3861 INIT_LIST_HEAD(&hdev
->le_white_list
);
3862 INIT_LIST_HEAD(&hdev
->le_conn_params
);
3863 INIT_LIST_HEAD(&hdev
->pend_le_conns
);
3864 INIT_LIST_HEAD(&hdev
->conn_hash
.list
);
3866 INIT_WORK(&hdev
->rx_work
, hci_rx_work
);
3867 INIT_WORK(&hdev
->cmd_work
, hci_cmd_work
);
3868 INIT_WORK(&hdev
->tx_work
, hci_tx_work
);
3869 INIT_WORK(&hdev
->power_on
, hci_power_on
);
3871 INIT_DELAYED_WORK(&hdev
->power_off
, hci_power_off
);
3872 INIT_DELAYED_WORK(&hdev
->discov_off
, hci_discov_off
);
3873 INIT_DELAYED_WORK(&hdev
->le_scan_disable
, le_scan_disable_work
);
3875 skb_queue_head_init(&hdev
->rx_q
);
3876 skb_queue_head_init(&hdev
->cmd_q
);
3877 skb_queue_head_init(&hdev
->raw_q
);
3879 init_waitqueue_head(&hdev
->req_wait_q
);
3881 setup_timer(&hdev
->cmd_timer
, hci_cmd_timeout
, (unsigned long) hdev
);
3883 hci_init_sysfs(hdev
);
3884 discovery_init(hdev
);
3888 EXPORT_SYMBOL(hci_alloc_dev
);
3890 /* Free HCI device */
3891 void hci_free_dev(struct hci_dev
*hdev
)
3893 /* will free via device release */
3894 put_device(&hdev
->dev
);
3896 EXPORT_SYMBOL(hci_free_dev
);
3898 /* Register HCI device */
3899 int hci_register_dev(struct hci_dev
*hdev
)
3903 if (!hdev
->open
|| !hdev
->close
)
3906 /* Do not allow HCI_AMP devices to register at index 0,
3907 * so the index can be used as the AMP controller ID.
3909 switch (hdev
->dev_type
) {
3911 id
= ida_simple_get(&hci_index_ida
, 0, 0, GFP_KERNEL
);
3914 id
= ida_simple_get(&hci_index_ida
, 1, 0, GFP_KERNEL
);
3923 sprintf(hdev
->name
, "hci%d", id
);
3926 BT_DBG("%p name %s bus %d", hdev
, hdev
->name
, hdev
->bus
);
3928 hdev
->workqueue
= alloc_workqueue("%s", WQ_HIGHPRI
| WQ_UNBOUND
|
3929 WQ_MEM_RECLAIM
, 1, hdev
->name
);
3930 if (!hdev
->workqueue
) {
3935 hdev
->req_workqueue
= alloc_workqueue("%s", WQ_HIGHPRI
| WQ_UNBOUND
|
3936 WQ_MEM_RECLAIM
, 1, hdev
->name
);
3937 if (!hdev
->req_workqueue
) {
3938 destroy_workqueue(hdev
->workqueue
);
3943 if (!IS_ERR_OR_NULL(bt_debugfs
))
3944 hdev
->debugfs
= debugfs_create_dir(hdev
->name
, bt_debugfs
);
3946 dev_set_name(&hdev
->dev
, "%s", hdev
->name
);
3948 hdev
->tfm_aes
= crypto_alloc_blkcipher("ecb(aes)", 0,
3950 if (IS_ERR(hdev
->tfm_aes
)) {
3951 BT_ERR("Unable to create crypto context");
3952 error
= PTR_ERR(hdev
->tfm_aes
);
3953 hdev
->tfm_aes
= NULL
;
3957 error
= device_add(&hdev
->dev
);
3961 hdev
->rfkill
= rfkill_alloc(hdev
->name
, &hdev
->dev
,
3962 RFKILL_TYPE_BLUETOOTH
, &hci_rfkill_ops
,
3965 if (rfkill_register(hdev
->rfkill
) < 0) {
3966 rfkill_destroy(hdev
->rfkill
);
3967 hdev
->rfkill
= NULL
;
3971 if (hdev
->rfkill
&& rfkill_blocked(hdev
->rfkill
))
3972 set_bit(HCI_RFKILLED
, &hdev
->dev_flags
);
3974 set_bit(HCI_SETUP
, &hdev
->dev_flags
);
3975 set_bit(HCI_AUTO_OFF
, &hdev
->dev_flags
);
3977 if (hdev
->dev_type
== HCI_BREDR
) {
3978 /* Assume BR/EDR support until proven otherwise (such as
3979 * through reading supported features during init.
3981 set_bit(HCI_BREDR_ENABLED
, &hdev
->dev_flags
);
3984 write_lock(&hci_dev_list_lock
);
3985 list_add(&hdev
->list
, &hci_dev_list
);
3986 write_unlock(&hci_dev_list_lock
);
3988 hci_notify(hdev
, HCI_DEV_REG
);
3991 queue_work(hdev
->req_workqueue
, &hdev
->power_on
);
3996 crypto_free_blkcipher(hdev
->tfm_aes
);
3998 destroy_workqueue(hdev
->workqueue
);
3999 destroy_workqueue(hdev
->req_workqueue
);
4001 ida_simple_remove(&hci_index_ida
, hdev
->id
);
4005 EXPORT_SYMBOL(hci_register_dev
);
4007 /* Unregister HCI device */
4008 void hci_unregister_dev(struct hci_dev
*hdev
)
4012 BT_DBG("%p name %s bus %d", hdev
, hdev
->name
, hdev
->bus
);
4014 set_bit(HCI_UNREGISTER
, &hdev
->dev_flags
);
4018 write_lock(&hci_dev_list_lock
);
4019 list_del(&hdev
->list
);
4020 write_unlock(&hci_dev_list_lock
);
4022 hci_dev_do_close(hdev
);
4024 for (i
= 0; i
< NUM_REASSEMBLY
; i
++)
4025 kfree_skb(hdev
->reassembly
[i
]);
4027 cancel_work_sync(&hdev
->power_on
);
4029 if (!test_bit(HCI_INIT
, &hdev
->flags
) &&
4030 !test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
4032 mgmt_index_removed(hdev
);
4033 hci_dev_unlock(hdev
);
4036 /* mgmt_index_removed should take care of emptying the
4038 BUG_ON(!list_empty(&hdev
->mgmt_pending
));
4040 hci_notify(hdev
, HCI_DEV_UNREG
);
4043 rfkill_unregister(hdev
->rfkill
);
4044 rfkill_destroy(hdev
->rfkill
);
4048 crypto_free_blkcipher(hdev
->tfm_aes
);
4050 device_del(&hdev
->dev
);
4052 debugfs_remove_recursive(hdev
->debugfs
);
4054 destroy_workqueue(hdev
->workqueue
);
4055 destroy_workqueue(hdev
->req_workqueue
);
4058 hci_blacklist_clear(hdev
);
4059 hci_uuids_clear(hdev
);
4060 hci_link_keys_clear(hdev
);
4061 hci_smp_ltks_clear(hdev
);
4062 hci_smp_irks_clear(hdev
);
4063 hci_remote_oob_data_clear(hdev
);
4064 hci_white_list_clear(hdev
);
4065 hci_conn_params_clear(hdev
);
4066 hci_pend_le_conns_clear(hdev
);
4067 hci_dev_unlock(hdev
);
4071 ida_simple_remove(&hci_index_ida
, id
);
4073 EXPORT_SYMBOL(hci_unregister_dev
);
4075 /* Suspend HCI device */
4076 int hci_suspend_dev(struct hci_dev
*hdev
)
4078 hci_notify(hdev
, HCI_DEV_SUSPEND
);
4081 EXPORT_SYMBOL(hci_suspend_dev
);
4083 /* Resume HCI device */
4084 int hci_resume_dev(struct hci_dev
*hdev
)
4086 hci_notify(hdev
, HCI_DEV_RESUME
);
4089 EXPORT_SYMBOL(hci_resume_dev
);
4091 /* Receive frame from HCI drivers */
4092 int hci_recv_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4094 if (!hdev
|| (!test_bit(HCI_UP
, &hdev
->flags
)
4095 && !test_bit(HCI_INIT
, &hdev
->flags
))) {
4101 bt_cb(skb
)->incoming
= 1;
4104 __net_timestamp(skb
);
4106 skb_queue_tail(&hdev
->rx_q
, skb
);
4107 queue_work(hdev
->workqueue
, &hdev
->rx_work
);
4111 EXPORT_SYMBOL(hci_recv_frame
);
4113 static int hci_reassembly(struct hci_dev
*hdev
, int type
, void *data
,
4114 int count
, __u8 index
)
4119 struct sk_buff
*skb
;
4120 struct bt_skb_cb
*scb
;
4122 if ((type
< HCI_ACLDATA_PKT
|| type
> HCI_EVENT_PKT
) ||
4123 index
>= NUM_REASSEMBLY
)
4126 skb
= hdev
->reassembly
[index
];
4130 case HCI_ACLDATA_PKT
:
4131 len
= HCI_MAX_FRAME_SIZE
;
4132 hlen
= HCI_ACL_HDR_SIZE
;
4135 len
= HCI_MAX_EVENT_SIZE
;
4136 hlen
= HCI_EVENT_HDR_SIZE
;
4138 case HCI_SCODATA_PKT
:
4139 len
= HCI_MAX_SCO_SIZE
;
4140 hlen
= HCI_SCO_HDR_SIZE
;
4144 skb
= bt_skb_alloc(len
, GFP_ATOMIC
);
4148 scb
= (void *) skb
->cb
;
4150 scb
->pkt_type
= type
;
4152 hdev
->reassembly
[index
] = skb
;
4156 scb
= (void *) skb
->cb
;
4157 len
= min_t(uint
, scb
->expect
, count
);
4159 memcpy(skb_put(skb
, len
), data
, len
);
4168 if (skb
->len
== HCI_EVENT_HDR_SIZE
) {
4169 struct hci_event_hdr
*h
= hci_event_hdr(skb
);
4170 scb
->expect
= h
->plen
;
4172 if (skb_tailroom(skb
) < scb
->expect
) {
4174 hdev
->reassembly
[index
] = NULL
;
4180 case HCI_ACLDATA_PKT
:
4181 if (skb
->len
== HCI_ACL_HDR_SIZE
) {
4182 struct hci_acl_hdr
*h
= hci_acl_hdr(skb
);
4183 scb
->expect
= __le16_to_cpu(h
->dlen
);
4185 if (skb_tailroom(skb
) < scb
->expect
) {
4187 hdev
->reassembly
[index
] = NULL
;
4193 case HCI_SCODATA_PKT
:
4194 if (skb
->len
== HCI_SCO_HDR_SIZE
) {
4195 struct hci_sco_hdr
*h
= hci_sco_hdr(skb
);
4196 scb
->expect
= h
->dlen
;
4198 if (skb_tailroom(skb
) < scb
->expect
) {
4200 hdev
->reassembly
[index
] = NULL
;
4207 if (scb
->expect
== 0) {
4208 /* Complete frame */
4210 bt_cb(skb
)->pkt_type
= type
;
4211 hci_recv_frame(hdev
, skb
);
4213 hdev
->reassembly
[index
] = NULL
;
4221 int hci_recv_fragment(struct hci_dev
*hdev
, int type
, void *data
, int count
)
4225 if (type
< HCI_ACLDATA_PKT
|| type
> HCI_EVENT_PKT
)
4229 rem
= hci_reassembly(hdev
, type
, data
, count
, type
- 1);
4233 data
+= (count
- rem
);
4239 EXPORT_SYMBOL(hci_recv_fragment
);
4241 #define STREAM_REASSEMBLY 0
4243 int hci_recv_stream_fragment(struct hci_dev
*hdev
, void *data
, int count
)
4249 struct sk_buff
*skb
= hdev
->reassembly
[STREAM_REASSEMBLY
];
4252 struct { char type
; } *pkt
;
4254 /* Start of the frame */
4261 type
= bt_cb(skb
)->pkt_type
;
4263 rem
= hci_reassembly(hdev
, type
, data
, count
,
4268 data
+= (count
- rem
);
4274 EXPORT_SYMBOL(hci_recv_stream_fragment
);
4276 /* ---- Interface to upper protocols ---- */
4278 int hci_register_cb(struct hci_cb
*cb
)
4280 BT_DBG("%p name %s", cb
, cb
->name
);
4282 write_lock(&hci_cb_list_lock
);
4283 list_add(&cb
->list
, &hci_cb_list
);
4284 write_unlock(&hci_cb_list_lock
);
4288 EXPORT_SYMBOL(hci_register_cb
);
4290 int hci_unregister_cb(struct hci_cb
*cb
)
4292 BT_DBG("%p name %s", cb
, cb
->name
);
4294 write_lock(&hci_cb_list_lock
);
4295 list_del(&cb
->list
);
4296 write_unlock(&hci_cb_list_lock
);
4300 EXPORT_SYMBOL(hci_unregister_cb
);
4302 static void hci_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4304 BT_DBG("%s type %d len %d", hdev
->name
, bt_cb(skb
)->pkt_type
, skb
->len
);
4307 __net_timestamp(skb
);
4309 /* Send copy to monitor */
4310 hci_send_to_monitor(hdev
, skb
);
4312 if (atomic_read(&hdev
->promisc
)) {
4313 /* Send copy to the sockets */
4314 hci_send_to_sock(hdev
, skb
);
4317 /* Get rid of skb owner, prior to sending to the driver. */
4320 if (hdev
->send(hdev
, skb
) < 0)
4321 BT_ERR("%s sending frame failed", hdev
->name
);
4324 void hci_req_init(struct hci_request
*req
, struct hci_dev
*hdev
)
4326 skb_queue_head_init(&req
->cmd_q
);
4331 int hci_req_run(struct hci_request
*req
, hci_req_complete_t complete
)
4333 struct hci_dev
*hdev
= req
->hdev
;
4334 struct sk_buff
*skb
;
4335 unsigned long flags
;
4337 BT_DBG("length %u", skb_queue_len(&req
->cmd_q
));
4339 /* If an error occured during request building, remove all HCI
4340 * commands queued on the HCI request queue.
4343 skb_queue_purge(&req
->cmd_q
);
4347 /* Do not allow empty requests */
4348 if (skb_queue_empty(&req
->cmd_q
))
4351 skb
= skb_peek_tail(&req
->cmd_q
);
4352 bt_cb(skb
)->req
.complete
= complete
;
4354 spin_lock_irqsave(&hdev
->cmd_q
.lock
, flags
);
4355 skb_queue_splice_tail(&req
->cmd_q
, &hdev
->cmd_q
);
4356 spin_unlock_irqrestore(&hdev
->cmd_q
.lock
, flags
);
4358 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
4363 static struct sk_buff
*hci_prepare_cmd(struct hci_dev
*hdev
, u16 opcode
,
4364 u32 plen
, const void *param
)
4366 int len
= HCI_COMMAND_HDR_SIZE
+ plen
;
4367 struct hci_command_hdr
*hdr
;
4368 struct sk_buff
*skb
;
4370 skb
= bt_skb_alloc(len
, GFP_ATOMIC
);
4374 hdr
= (struct hci_command_hdr
*) skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
4375 hdr
->opcode
= cpu_to_le16(opcode
);
4379 memcpy(skb_put(skb
, plen
), param
, plen
);
4381 BT_DBG("skb len %d", skb
->len
);
4383 bt_cb(skb
)->pkt_type
= HCI_COMMAND_PKT
;
4388 /* Send HCI command */
4389 int hci_send_cmd(struct hci_dev
*hdev
, __u16 opcode
, __u32 plen
,
4392 struct sk_buff
*skb
;
4394 BT_DBG("%s opcode 0x%4.4x plen %d", hdev
->name
, opcode
, plen
);
4396 skb
= hci_prepare_cmd(hdev
, opcode
, plen
, param
);
4398 BT_ERR("%s no memory for command", hdev
->name
);
4402 /* Stand-alone HCI commands must be flaged as
4403 * single-command requests.
4405 bt_cb(skb
)->req
.start
= true;
4407 skb_queue_tail(&hdev
->cmd_q
, skb
);
4408 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
4413 /* Queue a command to an asynchronous HCI request */
4414 void hci_req_add_ev(struct hci_request
*req
, u16 opcode
, u32 plen
,
4415 const void *param
, u8 event
)
4417 struct hci_dev
*hdev
= req
->hdev
;
4418 struct sk_buff
*skb
;
4420 BT_DBG("%s opcode 0x%4.4x plen %d", hdev
->name
, opcode
, plen
);
4422 /* If an error occured during request building, there is no point in
4423 * queueing the HCI command. We can simply return.
4428 skb
= hci_prepare_cmd(hdev
, opcode
, plen
, param
);
4430 BT_ERR("%s no memory for command (opcode 0x%4.4x)",
4431 hdev
->name
, opcode
);
4436 if (skb_queue_empty(&req
->cmd_q
))
4437 bt_cb(skb
)->req
.start
= true;
4439 bt_cb(skb
)->req
.event
= event
;
4441 skb_queue_tail(&req
->cmd_q
, skb
);
4444 void hci_req_add(struct hci_request
*req
, u16 opcode
, u32 plen
,
4447 hci_req_add_ev(req
, opcode
, plen
, param
, 0);
4450 /* Get data from the previously sent command */
4451 void *hci_sent_cmd_data(struct hci_dev
*hdev
, __u16 opcode
)
4453 struct hci_command_hdr
*hdr
;
4455 if (!hdev
->sent_cmd
)
4458 hdr
= (void *) hdev
->sent_cmd
->data
;
4460 if (hdr
->opcode
!= cpu_to_le16(opcode
))
4463 BT_DBG("%s opcode 0x%4.4x", hdev
->name
, opcode
);
4465 return hdev
->sent_cmd
->data
+ HCI_COMMAND_HDR_SIZE
;
4469 static void hci_add_acl_hdr(struct sk_buff
*skb
, __u16 handle
, __u16 flags
)
4471 struct hci_acl_hdr
*hdr
;
4474 skb_push(skb
, HCI_ACL_HDR_SIZE
);
4475 skb_reset_transport_header(skb
);
4476 hdr
= (struct hci_acl_hdr
*)skb_transport_header(skb
);
4477 hdr
->handle
= cpu_to_le16(hci_handle_pack(handle
, flags
));
4478 hdr
->dlen
= cpu_to_le16(len
);
4481 static void hci_queue_acl(struct hci_chan
*chan
, struct sk_buff_head
*queue
,
4482 struct sk_buff
*skb
, __u16 flags
)
4484 struct hci_conn
*conn
= chan
->conn
;
4485 struct hci_dev
*hdev
= conn
->hdev
;
4486 struct sk_buff
*list
;
4488 skb
->len
= skb_headlen(skb
);
4491 bt_cb(skb
)->pkt_type
= HCI_ACLDATA_PKT
;
4493 switch (hdev
->dev_type
) {
4495 hci_add_acl_hdr(skb
, conn
->handle
, flags
);
4498 hci_add_acl_hdr(skb
, chan
->handle
, flags
);
4501 BT_ERR("%s unknown dev_type %d", hdev
->name
, hdev
->dev_type
);
4505 list
= skb_shinfo(skb
)->frag_list
;
4507 /* Non fragmented */
4508 BT_DBG("%s nonfrag skb %p len %d", hdev
->name
, skb
, skb
->len
);
4510 skb_queue_tail(queue
, skb
);
4513 BT_DBG("%s frag %p len %d", hdev
->name
, skb
, skb
->len
);
4515 skb_shinfo(skb
)->frag_list
= NULL
;
4517 /* Queue all fragments atomically */
4518 spin_lock(&queue
->lock
);
4520 __skb_queue_tail(queue
, skb
);
4522 flags
&= ~ACL_START
;
4525 skb
= list
; list
= list
->next
;
4527 bt_cb(skb
)->pkt_type
= HCI_ACLDATA_PKT
;
4528 hci_add_acl_hdr(skb
, conn
->handle
, flags
);
4530 BT_DBG("%s frag %p len %d", hdev
->name
, skb
, skb
->len
);
4532 __skb_queue_tail(queue
, skb
);
4535 spin_unlock(&queue
->lock
);
4539 void hci_send_acl(struct hci_chan
*chan
, struct sk_buff
*skb
, __u16 flags
)
4541 struct hci_dev
*hdev
= chan
->conn
->hdev
;
4543 BT_DBG("%s chan %p flags 0x%4.4x", hdev
->name
, chan
, flags
);
4545 hci_queue_acl(chan
, &chan
->data_q
, skb
, flags
);
4547 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
4551 void hci_send_sco(struct hci_conn
*conn
, struct sk_buff
*skb
)
4553 struct hci_dev
*hdev
= conn
->hdev
;
4554 struct hci_sco_hdr hdr
;
4556 BT_DBG("%s len %d", hdev
->name
, skb
->len
);
4558 hdr
.handle
= cpu_to_le16(conn
->handle
);
4559 hdr
.dlen
= skb
->len
;
4561 skb_push(skb
, HCI_SCO_HDR_SIZE
);
4562 skb_reset_transport_header(skb
);
4563 memcpy(skb_transport_header(skb
), &hdr
, HCI_SCO_HDR_SIZE
);
4565 bt_cb(skb
)->pkt_type
= HCI_SCODATA_PKT
;
4567 skb_queue_tail(&conn
->data_q
, skb
);
4568 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
4571 /* ---- HCI TX task (outgoing data) ---- */
4573 /* HCI Connection scheduler */
4574 static struct hci_conn
*hci_low_sent(struct hci_dev
*hdev
, __u8 type
,
4577 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4578 struct hci_conn
*conn
= NULL
, *c
;
4579 unsigned int num
= 0, min
= ~0;
4581 /* We don't have to lock device here. Connections are always
4582 * added and removed with TX task disabled. */
4586 list_for_each_entry_rcu(c
, &h
->list
, list
) {
4587 if (c
->type
!= type
|| skb_queue_empty(&c
->data_q
))
4590 if (c
->state
!= BT_CONNECTED
&& c
->state
!= BT_CONFIG
)
4595 if (c
->sent
< min
) {
4600 if (hci_conn_num(hdev
, type
) == num
)
4609 switch (conn
->type
) {
4611 cnt
= hdev
->acl_cnt
;
4615 cnt
= hdev
->sco_cnt
;
4618 cnt
= hdev
->le_mtu
? hdev
->le_cnt
: hdev
->acl_cnt
;
4622 BT_ERR("Unknown link type");
4630 BT_DBG("conn %p quote %d", conn
, *quote
);
4634 static void hci_link_tx_to(struct hci_dev
*hdev
, __u8 type
)
4636 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4639 BT_ERR("%s link tx timeout", hdev
->name
);
4643 /* Kill stalled connections */
4644 list_for_each_entry_rcu(c
, &h
->list
, list
) {
4645 if (c
->type
== type
&& c
->sent
) {
4646 BT_ERR("%s killing stalled connection %pMR",
4647 hdev
->name
, &c
->dst
);
4648 hci_disconnect(c
, HCI_ERROR_REMOTE_USER_TERM
);
4655 static struct hci_chan
*hci_chan_sent(struct hci_dev
*hdev
, __u8 type
,
4658 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4659 struct hci_chan
*chan
= NULL
;
4660 unsigned int num
= 0, min
= ~0, cur_prio
= 0;
4661 struct hci_conn
*conn
;
4662 int cnt
, q
, conn_num
= 0;
4664 BT_DBG("%s", hdev
->name
);
4668 list_for_each_entry_rcu(conn
, &h
->list
, list
) {
4669 struct hci_chan
*tmp
;
4671 if (conn
->type
!= type
)
4674 if (conn
->state
!= BT_CONNECTED
&& conn
->state
!= BT_CONFIG
)
4679 list_for_each_entry_rcu(tmp
, &conn
->chan_list
, list
) {
4680 struct sk_buff
*skb
;
4682 if (skb_queue_empty(&tmp
->data_q
))
4685 skb
= skb_peek(&tmp
->data_q
);
4686 if (skb
->priority
< cur_prio
)
4689 if (skb
->priority
> cur_prio
) {
4692 cur_prio
= skb
->priority
;
4697 if (conn
->sent
< min
) {
4703 if (hci_conn_num(hdev
, type
) == conn_num
)
4712 switch (chan
->conn
->type
) {
4714 cnt
= hdev
->acl_cnt
;
4717 cnt
= hdev
->block_cnt
;
4721 cnt
= hdev
->sco_cnt
;
4724 cnt
= hdev
->le_mtu
? hdev
->le_cnt
: hdev
->acl_cnt
;
4728 BT_ERR("Unknown link type");
4733 BT_DBG("chan %p quote %d", chan
, *quote
);
4737 static void hci_prio_recalculate(struct hci_dev
*hdev
, __u8 type
)
4739 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
4740 struct hci_conn
*conn
;
4743 BT_DBG("%s", hdev
->name
);
4747 list_for_each_entry_rcu(conn
, &h
->list
, list
) {
4748 struct hci_chan
*chan
;
4750 if (conn
->type
!= type
)
4753 if (conn
->state
!= BT_CONNECTED
&& conn
->state
!= BT_CONFIG
)
4758 list_for_each_entry_rcu(chan
, &conn
->chan_list
, list
) {
4759 struct sk_buff
*skb
;
4766 if (skb_queue_empty(&chan
->data_q
))
4769 skb
= skb_peek(&chan
->data_q
);
4770 if (skb
->priority
>= HCI_PRIO_MAX
- 1)
4773 skb
->priority
= HCI_PRIO_MAX
- 1;
4775 BT_DBG("chan %p skb %p promoted to %d", chan
, skb
,
4779 if (hci_conn_num(hdev
, type
) == num
)
4787 static inline int __get_blocks(struct hci_dev
*hdev
, struct sk_buff
*skb
)
4789 /* Calculate count of blocks used by this packet */
4790 return DIV_ROUND_UP(skb
->len
- HCI_ACL_HDR_SIZE
, hdev
->block_len
);
4793 static void __check_timeout(struct hci_dev
*hdev
, unsigned int cnt
)
4795 if (!test_bit(HCI_RAW
, &hdev
->flags
)) {
4796 /* ACL tx timeout must be longer than maximum
4797 * link supervision timeout (40.9 seconds) */
4798 if (!cnt
&& time_after(jiffies
, hdev
->acl_last_tx
+
4799 HCI_ACL_TX_TIMEOUT
))
4800 hci_link_tx_to(hdev
, ACL_LINK
);
4804 static void hci_sched_acl_pkt(struct hci_dev
*hdev
)
4806 unsigned int cnt
= hdev
->acl_cnt
;
4807 struct hci_chan
*chan
;
4808 struct sk_buff
*skb
;
4811 __check_timeout(hdev
, cnt
);
4813 while (hdev
->acl_cnt
&&
4814 (chan
= hci_chan_sent(hdev
, ACL_LINK
, "e
))) {
4815 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4816 while (quote
-- && (skb
= skb_peek(&chan
->data_q
))) {
4817 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4818 skb
->len
, skb
->priority
);
4820 /* Stop if priority has changed */
4821 if (skb
->priority
< priority
)
4824 skb
= skb_dequeue(&chan
->data_q
);
4826 hci_conn_enter_active_mode(chan
->conn
,
4827 bt_cb(skb
)->force_active
);
4829 hci_send_frame(hdev
, skb
);
4830 hdev
->acl_last_tx
= jiffies
;
4838 if (cnt
!= hdev
->acl_cnt
)
4839 hci_prio_recalculate(hdev
, ACL_LINK
);
4842 static void hci_sched_acl_blk(struct hci_dev
*hdev
)
4844 unsigned int cnt
= hdev
->block_cnt
;
4845 struct hci_chan
*chan
;
4846 struct sk_buff
*skb
;
4850 __check_timeout(hdev
, cnt
);
4852 BT_DBG("%s", hdev
->name
);
4854 if (hdev
->dev_type
== HCI_AMP
)
4859 while (hdev
->block_cnt
> 0 &&
4860 (chan
= hci_chan_sent(hdev
, type
, "e
))) {
4861 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4862 while (quote
> 0 && (skb
= skb_peek(&chan
->data_q
))) {
4865 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4866 skb
->len
, skb
->priority
);
4868 /* Stop if priority has changed */
4869 if (skb
->priority
< priority
)
4872 skb
= skb_dequeue(&chan
->data_q
);
4874 blocks
= __get_blocks(hdev
, skb
);
4875 if (blocks
> hdev
->block_cnt
)
4878 hci_conn_enter_active_mode(chan
->conn
,
4879 bt_cb(skb
)->force_active
);
4881 hci_send_frame(hdev
, skb
);
4882 hdev
->acl_last_tx
= jiffies
;
4884 hdev
->block_cnt
-= blocks
;
4887 chan
->sent
+= blocks
;
4888 chan
->conn
->sent
+= blocks
;
4892 if (cnt
!= hdev
->block_cnt
)
4893 hci_prio_recalculate(hdev
, type
);
4896 static void hci_sched_acl(struct hci_dev
*hdev
)
4898 BT_DBG("%s", hdev
->name
);
4900 /* No ACL link over BR/EDR controller */
4901 if (!hci_conn_num(hdev
, ACL_LINK
) && hdev
->dev_type
== HCI_BREDR
)
4904 /* No AMP link over AMP controller */
4905 if (!hci_conn_num(hdev
, AMP_LINK
) && hdev
->dev_type
== HCI_AMP
)
4908 switch (hdev
->flow_ctl_mode
) {
4909 case HCI_FLOW_CTL_MODE_PACKET_BASED
:
4910 hci_sched_acl_pkt(hdev
);
4913 case HCI_FLOW_CTL_MODE_BLOCK_BASED
:
4914 hci_sched_acl_blk(hdev
);
4920 static void hci_sched_sco(struct hci_dev
*hdev
)
4922 struct hci_conn
*conn
;
4923 struct sk_buff
*skb
;
4926 BT_DBG("%s", hdev
->name
);
4928 if (!hci_conn_num(hdev
, SCO_LINK
))
4931 while (hdev
->sco_cnt
&& (conn
= hci_low_sent(hdev
, SCO_LINK
, "e
))) {
4932 while (quote
-- && (skb
= skb_dequeue(&conn
->data_q
))) {
4933 BT_DBG("skb %p len %d", skb
, skb
->len
);
4934 hci_send_frame(hdev
, skb
);
4937 if (conn
->sent
== ~0)
4943 static void hci_sched_esco(struct hci_dev
*hdev
)
4945 struct hci_conn
*conn
;
4946 struct sk_buff
*skb
;
4949 BT_DBG("%s", hdev
->name
);
4951 if (!hci_conn_num(hdev
, ESCO_LINK
))
4954 while (hdev
->sco_cnt
&& (conn
= hci_low_sent(hdev
, ESCO_LINK
,
4956 while (quote
-- && (skb
= skb_dequeue(&conn
->data_q
))) {
4957 BT_DBG("skb %p len %d", skb
, skb
->len
);
4958 hci_send_frame(hdev
, skb
);
4961 if (conn
->sent
== ~0)
4967 static void hci_sched_le(struct hci_dev
*hdev
)
4969 struct hci_chan
*chan
;
4970 struct sk_buff
*skb
;
4971 int quote
, cnt
, tmp
;
4973 BT_DBG("%s", hdev
->name
);
4975 if (!hci_conn_num(hdev
, LE_LINK
))
4978 if (!test_bit(HCI_RAW
, &hdev
->flags
)) {
4979 /* LE tx timeout must be longer than maximum
4980 * link supervision timeout (40.9 seconds) */
4981 if (!hdev
->le_cnt
&& hdev
->le_pkts
&&
4982 time_after(jiffies
, hdev
->le_last_tx
+ HZ
* 45))
4983 hci_link_tx_to(hdev
, LE_LINK
);
4986 cnt
= hdev
->le_pkts
? hdev
->le_cnt
: hdev
->acl_cnt
;
4988 while (cnt
&& (chan
= hci_chan_sent(hdev
, LE_LINK
, "e
))) {
4989 u32 priority
= (skb_peek(&chan
->data_q
))->priority
;
4990 while (quote
-- && (skb
= skb_peek(&chan
->data_q
))) {
4991 BT_DBG("chan %p skb %p len %d priority %u", chan
, skb
,
4992 skb
->len
, skb
->priority
);
4994 /* Stop if priority has changed */
4995 if (skb
->priority
< priority
)
4998 skb
= skb_dequeue(&chan
->data_q
);
5000 hci_send_frame(hdev
, skb
);
5001 hdev
->le_last_tx
= jiffies
;
5012 hdev
->acl_cnt
= cnt
;
5015 hci_prio_recalculate(hdev
, LE_LINK
);
5018 static void hci_tx_work(struct work_struct
*work
)
5020 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, tx_work
);
5021 struct sk_buff
*skb
;
5023 BT_DBG("%s acl %d sco %d le %d", hdev
->name
, hdev
->acl_cnt
,
5024 hdev
->sco_cnt
, hdev
->le_cnt
);
5026 if (!test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
5027 /* Schedule queues and send stuff to HCI driver */
5028 hci_sched_acl(hdev
);
5029 hci_sched_sco(hdev
);
5030 hci_sched_esco(hdev
);
5034 /* Send next queued raw (unknown type) packet */
5035 while ((skb
= skb_dequeue(&hdev
->raw_q
)))
5036 hci_send_frame(hdev
, skb
);
5039 /* ----- HCI RX task (incoming data processing) ----- */
5041 /* ACL data packet */
5042 static void hci_acldata_packet(struct hci_dev
*hdev
, struct sk_buff
*skb
)
5044 struct hci_acl_hdr
*hdr
= (void *) skb
->data
;
5045 struct hci_conn
*conn
;
5046 __u16 handle
, flags
;
5048 skb_pull(skb
, HCI_ACL_HDR_SIZE
);
5050 handle
= __le16_to_cpu(hdr
->handle
);
5051 flags
= hci_flags(handle
);
5052 handle
= hci_handle(handle
);
5054 BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev
->name
, skb
->len
,
5057 hdev
->stat
.acl_rx
++;
5060 conn
= hci_conn_hash_lookup_handle(hdev
, handle
);
5061 hci_dev_unlock(hdev
);
5064 hci_conn_enter_active_mode(conn
, BT_POWER_FORCE_ACTIVE_OFF
);
5066 /* Send to upper protocol */
5067 l2cap_recv_acldata(conn
, skb
, flags
);
5070 BT_ERR("%s ACL packet for unknown connection handle %d",
5071 hdev
->name
, handle
);
5077 /* SCO data packet */
5078 static void hci_scodata_packet(struct hci_dev
*hdev
, struct sk_buff
*skb
)
5080 struct hci_sco_hdr
*hdr
= (void *) skb
->data
;
5081 struct hci_conn
*conn
;
5084 skb_pull(skb
, HCI_SCO_HDR_SIZE
);
5086 handle
= __le16_to_cpu(hdr
->handle
);
5088 BT_DBG("%s len %d handle 0x%4.4x", hdev
->name
, skb
->len
, handle
);
5090 hdev
->stat
.sco_rx
++;
5093 conn
= hci_conn_hash_lookup_handle(hdev
, handle
);
5094 hci_dev_unlock(hdev
);
5097 /* Send to upper protocol */
5098 sco_recv_scodata(conn
, skb
);
5101 BT_ERR("%s SCO packet for unknown connection handle %d",
5102 hdev
->name
, handle
);
5108 static bool hci_req_is_complete(struct hci_dev
*hdev
)
5110 struct sk_buff
*skb
;
5112 skb
= skb_peek(&hdev
->cmd_q
);
5116 return bt_cb(skb
)->req
.start
;
5119 static void hci_resend_last(struct hci_dev
*hdev
)
5121 struct hci_command_hdr
*sent
;
5122 struct sk_buff
*skb
;
5125 if (!hdev
->sent_cmd
)
5128 sent
= (void *) hdev
->sent_cmd
->data
;
5129 opcode
= __le16_to_cpu(sent
->opcode
);
5130 if (opcode
== HCI_OP_RESET
)
5133 skb
= skb_clone(hdev
->sent_cmd
, GFP_KERNEL
);
5137 skb_queue_head(&hdev
->cmd_q
, skb
);
5138 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
5141 void hci_req_cmd_complete(struct hci_dev
*hdev
, u16 opcode
, u8 status
)
5143 hci_req_complete_t req_complete
= NULL
;
5144 struct sk_buff
*skb
;
5145 unsigned long flags
;
5147 BT_DBG("opcode 0x%04x status 0x%02x", opcode
, status
);
5149 /* If the completed command doesn't match the last one that was
5150 * sent we need to do special handling of it.
5152 if (!hci_sent_cmd_data(hdev
, opcode
)) {
5153 /* Some CSR based controllers generate a spontaneous
5154 * reset complete event during init and any pending
5155 * command will never be completed. In such a case we
5156 * need to resend whatever was the last sent
5159 if (test_bit(HCI_INIT
, &hdev
->flags
) && opcode
== HCI_OP_RESET
)
5160 hci_resend_last(hdev
);
5165 /* If the command succeeded and there's still more commands in
5166 * this request the request is not yet complete.
5168 if (!status
&& !hci_req_is_complete(hdev
))
5171 /* If this was the last command in a request the complete
5172 * callback would be found in hdev->sent_cmd instead of the
5173 * command queue (hdev->cmd_q).
5175 if (hdev
->sent_cmd
) {
5176 req_complete
= bt_cb(hdev
->sent_cmd
)->req
.complete
;
5179 /* We must set the complete callback to NULL to
5180 * avoid calling the callback more than once if
5181 * this function gets called again.
5183 bt_cb(hdev
->sent_cmd
)->req
.complete
= NULL
;
5189 /* Remove all pending commands belonging to this request */
5190 spin_lock_irqsave(&hdev
->cmd_q
.lock
, flags
);
5191 while ((skb
= __skb_dequeue(&hdev
->cmd_q
))) {
5192 if (bt_cb(skb
)->req
.start
) {
5193 __skb_queue_head(&hdev
->cmd_q
, skb
);
5197 req_complete
= bt_cb(skb
)->req
.complete
;
5200 spin_unlock_irqrestore(&hdev
->cmd_q
.lock
, flags
);
5204 req_complete(hdev
, status
);
5207 static void hci_rx_work(struct work_struct
*work
)
5209 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, rx_work
);
5210 struct sk_buff
*skb
;
5212 BT_DBG("%s", hdev
->name
);
5214 while ((skb
= skb_dequeue(&hdev
->rx_q
))) {
5215 /* Send copy to monitor */
5216 hci_send_to_monitor(hdev
, skb
);
5218 if (atomic_read(&hdev
->promisc
)) {
5219 /* Send copy to the sockets */
5220 hci_send_to_sock(hdev
, skb
);
5223 if (test_bit(HCI_RAW
, &hdev
->flags
) ||
5224 test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
5229 if (test_bit(HCI_INIT
, &hdev
->flags
)) {
5230 /* Don't process data packets in this states. */
5231 switch (bt_cb(skb
)->pkt_type
) {
5232 case HCI_ACLDATA_PKT
:
5233 case HCI_SCODATA_PKT
:
5240 switch (bt_cb(skb
)->pkt_type
) {
5242 BT_DBG("%s Event packet", hdev
->name
);
5243 hci_event_packet(hdev
, skb
);
5246 case HCI_ACLDATA_PKT
:
5247 BT_DBG("%s ACL data packet", hdev
->name
);
5248 hci_acldata_packet(hdev
, skb
);
5251 case HCI_SCODATA_PKT
:
5252 BT_DBG("%s SCO data packet", hdev
->name
);
5253 hci_scodata_packet(hdev
, skb
);
5263 static void hci_cmd_work(struct work_struct
*work
)
5265 struct hci_dev
*hdev
= container_of(work
, struct hci_dev
, cmd_work
);
5266 struct sk_buff
*skb
;
5268 BT_DBG("%s cmd_cnt %d cmd queued %d", hdev
->name
,
5269 atomic_read(&hdev
->cmd_cnt
), skb_queue_len(&hdev
->cmd_q
));
5271 /* Send queued commands */
5272 if (atomic_read(&hdev
->cmd_cnt
)) {
5273 skb
= skb_dequeue(&hdev
->cmd_q
);
5277 kfree_skb(hdev
->sent_cmd
);
5279 hdev
->sent_cmd
= skb_clone(skb
, GFP_KERNEL
);
5280 if (hdev
->sent_cmd
) {
5281 atomic_dec(&hdev
->cmd_cnt
);
5282 hci_send_frame(hdev
, skb
);
5283 if (test_bit(HCI_RESET
, &hdev
->flags
))
5284 del_timer(&hdev
->cmd_timer
);
5286 mod_timer(&hdev
->cmd_timer
,
5287 jiffies
+ HCI_CMD_TIMEOUT
);
5289 skb_queue_head(&hdev
->cmd_q
, skb
);
5290 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
5295 void hci_req_add_le_scan_disable(struct hci_request
*req
)
5297 struct hci_cp_le_set_scan_enable cp
;
5299 memset(&cp
, 0, sizeof(cp
));
5300 cp
.enable
= LE_SCAN_DISABLE
;
5301 hci_req_add(req
, HCI_OP_LE_SET_SCAN_ENABLE
, sizeof(cp
), &cp
);
5304 void hci_req_add_le_passive_scan(struct hci_request
*req
)
5306 struct hci_cp_le_set_scan_param param_cp
;
5307 struct hci_cp_le_set_scan_enable enable_cp
;
5308 struct hci_dev
*hdev
= req
->hdev
;
5311 /* Set require_privacy to true to avoid identification from
5312 * unknown peer devices. Since this is passive scanning, no
5313 * SCAN_REQ using the local identity should be sent. Mandating
5314 * privacy is just an extra precaution.
5316 if (hci_update_random_address(req
, true, &own_addr_type
))
5319 memset(¶m_cp
, 0, sizeof(param_cp
));
5320 param_cp
.type
= LE_SCAN_PASSIVE
;
5321 param_cp
.interval
= cpu_to_le16(hdev
->le_scan_interval
);
5322 param_cp
.window
= cpu_to_le16(hdev
->le_scan_window
);
5323 param_cp
.own_address_type
= own_addr_type
;
5324 hci_req_add(req
, HCI_OP_LE_SET_SCAN_PARAM
, sizeof(param_cp
),
5327 memset(&enable_cp
, 0, sizeof(enable_cp
));
5328 enable_cp
.enable
= LE_SCAN_ENABLE
;
5329 enable_cp
.filter_dup
= LE_SCAN_FILTER_DUP_ENABLE
;
5330 hci_req_add(req
, HCI_OP_LE_SET_SCAN_ENABLE
, sizeof(enable_cp
),
5334 static void update_background_scan_complete(struct hci_dev
*hdev
, u8 status
)
5337 BT_DBG("HCI request failed to update background scanning: "
5338 "status 0x%2.2x", status
);
5341 /* This function controls the background scanning based on hdev->pend_le_conns
5342 * list. If there are pending LE connection we start the background scanning,
5343 * otherwise we stop it.
5345 * This function requires the caller holds hdev->lock.
5347 void hci_update_background_scan(struct hci_dev
*hdev
)
5349 struct hci_request req
;
5350 struct hci_conn
*conn
;
5353 hci_req_init(&req
, hdev
);
5355 if (list_empty(&hdev
->pend_le_conns
)) {
5356 /* If there is no pending LE connections, we should stop
5357 * the background scanning.
5360 /* If controller is not scanning we are done. */
5361 if (!test_bit(HCI_LE_SCAN
, &hdev
->dev_flags
))
5364 hci_req_add_le_scan_disable(&req
);
5366 BT_DBG("%s stopping background scanning", hdev
->name
);
5368 /* If there is at least one pending LE connection, we should
5369 * keep the background scan running.
5372 /* If controller is connecting, we should not start scanning
5373 * since some controllers are not able to scan and connect at
5376 conn
= hci_conn_hash_lookup_state(hdev
, LE_LINK
, BT_CONNECT
);
5380 /* If controller is currently scanning, we stop it to ensure we
5381 * don't miss any advertising (due to duplicates filter).
5383 if (test_bit(HCI_LE_SCAN
, &hdev
->dev_flags
))
5384 hci_req_add_le_scan_disable(&req
);
5386 hci_req_add_le_passive_scan(&req
);
5388 BT_DBG("%s starting background scanning", hdev
->name
);
5391 err
= hci_req_run(&req
, update_background_scan_complete
);
5393 BT_ERR("Failed to run HCI request: err %d", err
);