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[mirror_ubuntu-bionic-kernel.git] / net / bluetooth / mgmt.c
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3
4 Copyright (C) 2010 Nokia Corporation
5 Copyright (C) 2011-2012 Intel Corporation
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI Management interface */
26
27 #include <linux/module.h>
28 #include <asm/unaligned.h>
29
30 #include <net/bluetooth/bluetooth.h>
31 #include <net/bluetooth/hci_core.h>
32 #include <net/bluetooth/hci_sock.h>
33 #include <net/bluetooth/l2cap.h>
34 #include <net/bluetooth/mgmt.h>
35
36 #include "hci_request.h"
37 #include "smp.h"
38 #include "mgmt_util.h"
39
40 #define MGMT_VERSION 1
41 #define MGMT_REVISION 10
42
43 static const u16 mgmt_commands[] = {
44 MGMT_OP_READ_INDEX_LIST,
45 MGMT_OP_READ_INFO,
46 MGMT_OP_SET_POWERED,
47 MGMT_OP_SET_DISCOVERABLE,
48 MGMT_OP_SET_CONNECTABLE,
49 MGMT_OP_SET_FAST_CONNECTABLE,
50 MGMT_OP_SET_BONDABLE,
51 MGMT_OP_SET_LINK_SECURITY,
52 MGMT_OP_SET_SSP,
53 MGMT_OP_SET_HS,
54 MGMT_OP_SET_LE,
55 MGMT_OP_SET_DEV_CLASS,
56 MGMT_OP_SET_LOCAL_NAME,
57 MGMT_OP_ADD_UUID,
58 MGMT_OP_REMOVE_UUID,
59 MGMT_OP_LOAD_LINK_KEYS,
60 MGMT_OP_LOAD_LONG_TERM_KEYS,
61 MGMT_OP_DISCONNECT,
62 MGMT_OP_GET_CONNECTIONS,
63 MGMT_OP_PIN_CODE_REPLY,
64 MGMT_OP_PIN_CODE_NEG_REPLY,
65 MGMT_OP_SET_IO_CAPABILITY,
66 MGMT_OP_PAIR_DEVICE,
67 MGMT_OP_CANCEL_PAIR_DEVICE,
68 MGMT_OP_UNPAIR_DEVICE,
69 MGMT_OP_USER_CONFIRM_REPLY,
70 MGMT_OP_USER_CONFIRM_NEG_REPLY,
71 MGMT_OP_USER_PASSKEY_REPLY,
72 MGMT_OP_USER_PASSKEY_NEG_REPLY,
73 MGMT_OP_READ_LOCAL_OOB_DATA,
74 MGMT_OP_ADD_REMOTE_OOB_DATA,
75 MGMT_OP_REMOVE_REMOTE_OOB_DATA,
76 MGMT_OP_START_DISCOVERY,
77 MGMT_OP_STOP_DISCOVERY,
78 MGMT_OP_CONFIRM_NAME,
79 MGMT_OP_BLOCK_DEVICE,
80 MGMT_OP_UNBLOCK_DEVICE,
81 MGMT_OP_SET_DEVICE_ID,
82 MGMT_OP_SET_ADVERTISING,
83 MGMT_OP_SET_BREDR,
84 MGMT_OP_SET_STATIC_ADDRESS,
85 MGMT_OP_SET_SCAN_PARAMS,
86 MGMT_OP_SET_SECURE_CONN,
87 MGMT_OP_SET_DEBUG_KEYS,
88 MGMT_OP_SET_PRIVACY,
89 MGMT_OP_LOAD_IRKS,
90 MGMT_OP_GET_CONN_INFO,
91 MGMT_OP_GET_CLOCK_INFO,
92 MGMT_OP_ADD_DEVICE,
93 MGMT_OP_REMOVE_DEVICE,
94 MGMT_OP_LOAD_CONN_PARAM,
95 MGMT_OP_READ_UNCONF_INDEX_LIST,
96 MGMT_OP_READ_CONFIG_INFO,
97 MGMT_OP_SET_EXTERNAL_CONFIG,
98 MGMT_OP_SET_PUBLIC_ADDRESS,
99 MGMT_OP_START_SERVICE_DISCOVERY,
100 MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
101 MGMT_OP_READ_EXT_INDEX_LIST,
102 MGMT_OP_READ_ADV_FEATURES,
103 MGMT_OP_ADD_ADVERTISING,
104 MGMT_OP_REMOVE_ADVERTISING,
105 };
106
107 static const u16 mgmt_events[] = {
108 MGMT_EV_CONTROLLER_ERROR,
109 MGMT_EV_INDEX_ADDED,
110 MGMT_EV_INDEX_REMOVED,
111 MGMT_EV_NEW_SETTINGS,
112 MGMT_EV_CLASS_OF_DEV_CHANGED,
113 MGMT_EV_LOCAL_NAME_CHANGED,
114 MGMT_EV_NEW_LINK_KEY,
115 MGMT_EV_NEW_LONG_TERM_KEY,
116 MGMT_EV_DEVICE_CONNECTED,
117 MGMT_EV_DEVICE_DISCONNECTED,
118 MGMT_EV_CONNECT_FAILED,
119 MGMT_EV_PIN_CODE_REQUEST,
120 MGMT_EV_USER_CONFIRM_REQUEST,
121 MGMT_EV_USER_PASSKEY_REQUEST,
122 MGMT_EV_AUTH_FAILED,
123 MGMT_EV_DEVICE_FOUND,
124 MGMT_EV_DISCOVERING,
125 MGMT_EV_DEVICE_BLOCKED,
126 MGMT_EV_DEVICE_UNBLOCKED,
127 MGMT_EV_DEVICE_UNPAIRED,
128 MGMT_EV_PASSKEY_NOTIFY,
129 MGMT_EV_NEW_IRK,
130 MGMT_EV_NEW_CSRK,
131 MGMT_EV_DEVICE_ADDED,
132 MGMT_EV_DEVICE_REMOVED,
133 MGMT_EV_NEW_CONN_PARAM,
134 MGMT_EV_UNCONF_INDEX_ADDED,
135 MGMT_EV_UNCONF_INDEX_REMOVED,
136 MGMT_EV_NEW_CONFIG_OPTIONS,
137 MGMT_EV_EXT_INDEX_ADDED,
138 MGMT_EV_EXT_INDEX_REMOVED,
139 MGMT_EV_LOCAL_OOB_DATA_UPDATED,
140 MGMT_EV_ADVERTISING_ADDED,
141 MGMT_EV_ADVERTISING_REMOVED,
142 };
143
144 static const u16 mgmt_untrusted_commands[] = {
145 MGMT_OP_READ_INDEX_LIST,
146 MGMT_OP_READ_INFO,
147 MGMT_OP_READ_UNCONF_INDEX_LIST,
148 MGMT_OP_READ_CONFIG_INFO,
149 MGMT_OP_READ_EXT_INDEX_LIST,
150 };
151
152 static const u16 mgmt_untrusted_events[] = {
153 MGMT_EV_INDEX_ADDED,
154 MGMT_EV_INDEX_REMOVED,
155 MGMT_EV_NEW_SETTINGS,
156 MGMT_EV_CLASS_OF_DEV_CHANGED,
157 MGMT_EV_LOCAL_NAME_CHANGED,
158 MGMT_EV_UNCONF_INDEX_ADDED,
159 MGMT_EV_UNCONF_INDEX_REMOVED,
160 MGMT_EV_NEW_CONFIG_OPTIONS,
161 MGMT_EV_EXT_INDEX_ADDED,
162 MGMT_EV_EXT_INDEX_REMOVED,
163 };
164
165 #define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
166
167 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
168 "\x00\x00\x00\x00\x00\x00\x00\x00"
169
170 /* HCI to MGMT error code conversion table */
171 static u8 mgmt_status_table[] = {
172 MGMT_STATUS_SUCCESS,
173 MGMT_STATUS_UNKNOWN_COMMAND, /* Unknown Command */
174 MGMT_STATUS_NOT_CONNECTED, /* No Connection */
175 MGMT_STATUS_FAILED, /* Hardware Failure */
176 MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */
177 MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */
178 MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */
179 MGMT_STATUS_NO_RESOURCES, /* Memory Full */
180 MGMT_STATUS_TIMEOUT, /* Connection Timeout */
181 MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */
182 MGMT_STATUS_NO_RESOURCES, /* Max Number of SCO Connections */
183 MGMT_STATUS_ALREADY_CONNECTED, /* ACL Connection Exists */
184 MGMT_STATUS_BUSY, /* Command Disallowed */
185 MGMT_STATUS_NO_RESOURCES, /* Rejected Limited Resources */
186 MGMT_STATUS_REJECTED, /* Rejected Security */
187 MGMT_STATUS_REJECTED, /* Rejected Personal */
188 MGMT_STATUS_TIMEOUT, /* Host Timeout */
189 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Feature */
190 MGMT_STATUS_INVALID_PARAMS, /* Invalid Parameters */
191 MGMT_STATUS_DISCONNECTED, /* OE User Ended Connection */
192 MGMT_STATUS_NO_RESOURCES, /* OE Low Resources */
193 MGMT_STATUS_DISCONNECTED, /* OE Power Off */
194 MGMT_STATUS_DISCONNECTED, /* Connection Terminated */
195 MGMT_STATUS_BUSY, /* Repeated Attempts */
196 MGMT_STATUS_REJECTED, /* Pairing Not Allowed */
197 MGMT_STATUS_FAILED, /* Unknown LMP PDU */
198 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Remote Feature */
199 MGMT_STATUS_REJECTED, /* SCO Offset Rejected */
200 MGMT_STATUS_REJECTED, /* SCO Interval Rejected */
201 MGMT_STATUS_REJECTED, /* Air Mode Rejected */
202 MGMT_STATUS_INVALID_PARAMS, /* Invalid LMP Parameters */
203 MGMT_STATUS_FAILED, /* Unspecified Error */
204 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported LMP Parameter Value */
205 MGMT_STATUS_FAILED, /* Role Change Not Allowed */
206 MGMT_STATUS_TIMEOUT, /* LMP Response Timeout */
207 MGMT_STATUS_FAILED, /* LMP Error Transaction Collision */
208 MGMT_STATUS_FAILED, /* LMP PDU Not Allowed */
209 MGMT_STATUS_REJECTED, /* Encryption Mode Not Accepted */
210 MGMT_STATUS_FAILED, /* Unit Link Key Used */
211 MGMT_STATUS_NOT_SUPPORTED, /* QoS Not Supported */
212 MGMT_STATUS_TIMEOUT, /* Instant Passed */
213 MGMT_STATUS_NOT_SUPPORTED, /* Pairing Not Supported */
214 MGMT_STATUS_FAILED, /* Transaction Collision */
215 MGMT_STATUS_INVALID_PARAMS, /* Unacceptable Parameter */
216 MGMT_STATUS_REJECTED, /* QoS Rejected */
217 MGMT_STATUS_NOT_SUPPORTED, /* Classification Not Supported */
218 MGMT_STATUS_REJECTED, /* Insufficient Security */
219 MGMT_STATUS_INVALID_PARAMS, /* Parameter Out Of Range */
220 MGMT_STATUS_BUSY, /* Role Switch Pending */
221 MGMT_STATUS_FAILED, /* Slot Violation */
222 MGMT_STATUS_FAILED, /* Role Switch Failed */
223 MGMT_STATUS_INVALID_PARAMS, /* EIR Too Large */
224 MGMT_STATUS_NOT_SUPPORTED, /* Simple Pairing Not Supported */
225 MGMT_STATUS_BUSY, /* Host Busy Pairing */
226 MGMT_STATUS_REJECTED, /* Rejected, No Suitable Channel */
227 MGMT_STATUS_BUSY, /* Controller Busy */
228 MGMT_STATUS_INVALID_PARAMS, /* Unsuitable Connection Interval */
229 MGMT_STATUS_TIMEOUT, /* Directed Advertising Timeout */
230 MGMT_STATUS_AUTH_FAILED, /* Terminated Due to MIC Failure */
231 MGMT_STATUS_CONNECT_FAILED, /* Connection Establishment Failed */
232 MGMT_STATUS_CONNECT_FAILED, /* MAC Connection Failed */
233 };
234
235 static u8 mgmt_status(u8 hci_status)
236 {
237 if (hci_status < ARRAY_SIZE(mgmt_status_table))
238 return mgmt_status_table[hci_status];
239
240 return MGMT_STATUS_FAILED;
241 }
242
243 static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data,
244 u16 len, int flag)
245 {
246 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
247 flag, NULL);
248 }
249
250 static int mgmt_limited_event(u16 event, struct hci_dev *hdev, void *data,
251 u16 len, int flag, struct sock *skip_sk)
252 {
253 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
254 flag, skip_sk);
255 }
256
257 static int mgmt_generic_event(u16 event, struct hci_dev *hdev, void *data,
258 u16 len, struct sock *skip_sk)
259 {
260 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
261 HCI_MGMT_GENERIC_EVENTS, skip_sk);
262 }
263
264 static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len,
265 struct sock *skip_sk)
266 {
267 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
268 HCI_SOCK_TRUSTED, skip_sk);
269 }
270
271 static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
272 u16 data_len)
273 {
274 struct mgmt_rp_read_version rp;
275
276 BT_DBG("sock %p", sk);
277
278 rp.version = MGMT_VERSION;
279 rp.revision = cpu_to_le16(MGMT_REVISION);
280
281 return mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0,
282 &rp, sizeof(rp));
283 }
284
285 static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
286 u16 data_len)
287 {
288 struct mgmt_rp_read_commands *rp;
289 u16 num_commands, num_events;
290 size_t rp_size;
291 int i, err;
292
293 BT_DBG("sock %p", sk);
294
295 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
296 num_commands = ARRAY_SIZE(mgmt_commands);
297 num_events = ARRAY_SIZE(mgmt_events);
298 } else {
299 num_commands = ARRAY_SIZE(mgmt_untrusted_commands);
300 num_events = ARRAY_SIZE(mgmt_untrusted_events);
301 }
302
303 rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));
304
305 rp = kmalloc(rp_size, GFP_KERNEL);
306 if (!rp)
307 return -ENOMEM;
308
309 rp->num_commands = cpu_to_le16(num_commands);
310 rp->num_events = cpu_to_le16(num_events);
311
312 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
313 __le16 *opcode = rp->opcodes;
314
315 for (i = 0; i < num_commands; i++, opcode++)
316 put_unaligned_le16(mgmt_commands[i], opcode);
317
318 for (i = 0; i < num_events; i++, opcode++)
319 put_unaligned_le16(mgmt_events[i], opcode);
320 } else {
321 __le16 *opcode = rp->opcodes;
322
323 for (i = 0; i < num_commands; i++, opcode++)
324 put_unaligned_le16(mgmt_untrusted_commands[i], opcode);
325
326 for (i = 0; i < num_events; i++, opcode++)
327 put_unaligned_le16(mgmt_untrusted_events[i], opcode);
328 }
329
330 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0,
331 rp, rp_size);
332 kfree(rp);
333
334 return err;
335 }
336
337 static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
338 u16 data_len)
339 {
340 struct mgmt_rp_read_index_list *rp;
341 struct hci_dev *d;
342 size_t rp_len;
343 u16 count;
344 int err;
345
346 BT_DBG("sock %p", sk);
347
348 read_lock(&hci_dev_list_lock);
349
350 count = 0;
351 list_for_each_entry(d, &hci_dev_list, list) {
352 if (d->dev_type == HCI_BREDR &&
353 !hci_dev_test_flag(d, HCI_UNCONFIGURED))
354 count++;
355 }
356
357 rp_len = sizeof(*rp) + (2 * count);
358 rp = kmalloc(rp_len, GFP_ATOMIC);
359 if (!rp) {
360 read_unlock(&hci_dev_list_lock);
361 return -ENOMEM;
362 }
363
364 count = 0;
365 list_for_each_entry(d, &hci_dev_list, list) {
366 if (hci_dev_test_flag(d, HCI_SETUP) ||
367 hci_dev_test_flag(d, HCI_CONFIG) ||
368 hci_dev_test_flag(d, HCI_USER_CHANNEL))
369 continue;
370
371 /* Devices marked as raw-only are neither configured
372 * nor unconfigured controllers.
373 */
374 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
375 continue;
376
377 if (d->dev_type == HCI_BREDR &&
378 !hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
379 rp->index[count++] = cpu_to_le16(d->id);
380 BT_DBG("Added hci%u", d->id);
381 }
382 }
383
384 rp->num_controllers = cpu_to_le16(count);
385 rp_len = sizeof(*rp) + (2 * count);
386
387 read_unlock(&hci_dev_list_lock);
388
389 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST,
390 0, rp, rp_len);
391
392 kfree(rp);
393
394 return err;
395 }
396
397 static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev,
398 void *data, u16 data_len)
399 {
400 struct mgmt_rp_read_unconf_index_list *rp;
401 struct hci_dev *d;
402 size_t rp_len;
403 u16 count;
404 int err;
405
406 BT_DBG("sock %p", sk);
407
408 read_lock(&hci_dev_list_lock);
409
410 count = 0;
411 list_for_each_entry(d, &hci_dev_list, list) {
412 if (d->dev_type == HCI_BREDR &&
413 hci_dev_test_flag(d, HCI_UNCONFIGURED))
414 count++;
415 }
416
417 rp_len = sizeof(*rp) + (2 * count);
418 rp = kmalloc(rp_len, GFP_ATOMIC);
419 if (!rp) {
420 read_unlock(&hci_dev_list_lock);
421 return -ENOMEM;
422 }
423
424 count = 0;
425 list_for_each_entry(d, &hci_dev_list, list) {
426 if (hci_dev_test_flag(d, HCI_SETUP) ||
427 hci_dev_test_flag(d, HCI_CONFIG) ||
428 hci_dev_test_flag(d, HCI_USER_CHANNEL))
429 continue;
430
431 /* Devices marked as raw-only are neither configured
432 * nor unconfigured controllers.
433 */
434 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
435 continue;
436
437 if (d->dev_type == HCI_BREDR &&
438 hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
439 rp->index[count++] = cpu_to_le16(d->id);
440 BT_DBG("Added hci%u", d->id);
441 }
442 }
443
444 rp->num_controllers = cpu_to_le16(count);
445 rp_len = sizeof(*rp) + (2 * count);
446
447 read_unlock(&hci_dev_list_lock);
448
449 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
450 MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len);
451
452 kfree(rp);
453
454 return err;
455 }
456
457 static int read_ext_index_list(struct sock *sk, struct hci_dev *hdev,
458 void *data, u16 data_len)
459 {
460 struct mgmt_rp_read_ext_index_list *rp;
461 struct hci_dev *d;
462 size_t rp_len;
463 u16 count;
464 int err;
465
466 BT_DBG("sock %p", sk);
467
468 read_lock(&hci_dev_list_lock);
469
470 count = 0;
471 list_for_each_entry(d, &hci_dev_list, list) {
472 if (d->dev_type == HCI_BREDR || d->dev_type == HCI_AMP)
473 count++;
474 }
475
476 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
477 rp = kmalloc(rp_len, GFP_ATOMIC);
478 if (!rp) {
479 read_unlock(&hci_dev_list_lock);
480 return -ENOMEM;
481 }
482
483 count = 0;
484 list_for_each_entry(d, &hci_dev_list, list) {
485 if (hci_dev_test_flag(d, HCI_SETUP) ||
486 hci_dev_test_flag(d, HCI_CONFIG) ||
487 hci_dev_test_flag(d, HCI_USER_CHANNEL))
488 continue;
489
490 /* Devices marked as raw-only are neither configured
491 * nor unconfigured controllers.
492 */
493 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
494 continue;
495
496 if (d->dev_type == HCI_BREDR) {
497 if (hci_dev_test_flag(d, HCI_UNCONFIGURED))
498 rp->entry[count].type = 0x01;
499 else
500 rp->entry[count].type = 0x00;
501 } else if (d->dev_type == HCI_AMP) {
502 rp->entry[count].type = 0x02;
503 } else {
504 continue;
505 }
506
507 rp->entry[count].bus = d->bus;
508 rp->entry[count++].index = cpu_to_le16(d->id);
509 BT_DBG("Added hci%u", d->id);
510 }
511
512 rp->num_controllers = cpu_to_le16(count);
513 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
514
515 read_unlock(&hci_dev_list_lock);
516
517 /* If this command is called at least once, then all the
518 * default index and unconfigured index events are disabled
519 * and from now on only extended index events are used.
520 */
521 hci_sock_set_flag(sk, HCI_MGMT_EXT_INDEX_EVENTS);
522 hci_sock_clear_flag(sk, HCI_MGMT_INDEX_EVENTS);
523 hci_sock_clear_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS);
524
525 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
526 MGMT_OP_READ_EXT_INDEX_LIST, 0, rp, rp_len);
527
528 kfree(rp);
529
530 return err;
531 }
532
533 static bool is_configured(struct hci_dev *hdev)
534 {
535 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
536 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
537 return false;
538
539 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
540 !bacmp(&hdev->public_addr, BDADDR_ANY))
541 return false;
542
543 return true;
544 }
545
546 static __le32 get_missing_options(struct hci_dev *hdev)
547 {
548 u32 options = 0;
549
550 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
551 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
552 options |= MGMT_OPTION_EXTERNAL_CONFIG;
553
554 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
555 !bacmp(&hdev->public_addr, BDADDR_ANY))
556 options |= MGMT_OPTION_PUBLIC_ADDRESS;
557
558 return cpu_to_le32(options);
559 }
560
561 static int new_options(struct hci_dev *hdev, struct sock *skip)
562 {
563 __le32 options = get_missing_options(hdev);
564
565 return mgmt_generic_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
566 sizeof(options), skip);
567 }
568
569 static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
570 {
571 __le32 options = get_missing_options(hdev);
572
573 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &options,
574 sizeof(options));
575 }
576
577 static int read_config_info(struct sock *sk, struct hci_dev *hdev,
578 void *data, u16 data_len)
579 {
580 struct mgmt_rp_read_config_info rp;
581 u32 options = 0;
582
583 BT_DBG("sock %p %s", sk, hdev->name);
584
585 hci_dev_lock(hdev);
586
587 memset(&rp, 0, sizeof(rp));
588 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
589
590 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
591 options |= MGMT_OPTION_EXTERNAL_CONFIG;
592
593 if (hdev->set_bdaddr)
594 options |= MGMT_OPTION_PUBLIC_ADDRESS;
595
596 rp.supported_options = cpu_to_le32(options);
597 rp.missing_options = get_missing_options(hdev);
598
599 hci_dev_unlock(hdev);
600
601 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0,
602 &rp, sizeof(rp));
603 }
604
605 static u32 get_supported_settings(struct hci_dev *hdev)
606 {
607 u32 settings = 0;
608
609 settings |= MGMT_SETTING_POWERED;
610 settings |= MGMT_SETTING_BONDABLE;
611 settings |= MGMT_SETTING_DEBUG_KEYS;
612 settings |= MGMT_SETTING_CONNECTABLE;
613 settings |= MGMT_SETTING_DISCOVERABLE;
614
615 if (lmp_bredr_capable(hdev)) {
616 if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
617 settings |= MGMT_SETTING_FAST_CONNECTABLE;
618 settings |= MGMT_SETTING_BREDR;
619 settings |= MGMT_SETTING_LINK_SECURITY;
620
621 if (lmp_ssp_capable(hdev)) {
622 settings |= MGMT_SETTING_SSP;
623 settings |= MGMT_SETTING_HS;
624 }
625
626 if (lmp_sc_capable(hdev))
627 settings |= MGMT_SETTING_SECURE_CONN;
628 }
629
630 if (lmp_le_capable(hdev)) {
631 settings |= MGMT_SETTING_LE;
632 settings |= MGMT_SETTING_ADVERTISING;
633 settings |= MGMT_SETTING_SECURE_CONN;
634 settings |= MGMT_SETTING_PRIVACY;
635 settings |= MGMT_SETTING_STATIC_ADDRESS;
636 }
637
638 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
639 hdev->set_bdaddr)
640 settings |= MGMT_SETTING_CONFIGURATION;
641
642 return settings;
643 }
644
645 static u32 get_current_settings(struct hci_dev *hdev)
646 {
647 u32 settings = 0;
648
649 if (hdev_is_powered(hdev))
650 settings |= MGMT_SETTING_POWERED;
651
652 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE))
653 settings |= MGMT_SETTING_CONNECTABLE;
654
655 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
656 settings |= MGMT_SETTING_FAST_CONNECTABLE;
657
658 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
659 settings |= MGMT_SETTING_DISCOVERABLE;
660
661 if (hci_dev_test_flag(hdev, HCI_BONDABLE))
662 settings |= MGMT_SETTING_BONDABLE;
663
664 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
665 settings |= MGMT_SETTING_BREDR;
666
667 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
668 settings |= MGMT_SETTING_LE;
669
670 if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY))
671 settings |= MGMT_SETTING_LINK_SECURITY;
672
673 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
674 settings |= MGMT_SETTING_SSP;
675
676 if (hci_dev_test_flag(hdev, HCI_HS_ENABLED))
677 settings |= MGMT_SETTING_HS;
678
679 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
680 settings |= MGMT_SETTING_ADVERTISING;
681
682 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED))
683 settings |= MGMT_SETTING_SECURE_CONN;
684
685 if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS))
686 settings |= MGMT_SETTING_DEBUG_KEYS;
687
688 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
689 settings |= MGMT_SETTING_PRIVACY;
690
691 /* The current setting for static address has two purposes. The
692 * first is to indicate if the static address will be used and
693 * the second is to indicate if it is actually set.
694 *
695 * This means if the static address is not configured, this flag
696 * will never be set. If the address is configured, then if the
697 * address is actually used decides if the flag is set or not.
698 *
699 * For single mode LE only controllers and dual-mode controllers
700 * with BR/EDR disabled, the existence of the static address will
701 * be evaluated.
702 */
703 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
704 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
705 !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
706 if (bacmp(&hdev->static_addr, BDADDR_ANY))
707 settings |= MGMT_SETTING_STATIC_ADDRESS;
708 }
709
710 return settings;
711 }
712
713 #define PNP_INFO_SVCLASS_ID 0x1200
714
715 static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
716 {
717 u8 *ptr = data, *uuids_start = NULL;
718 struct bt_uuid *uuid;
719
720 if (len < 4)
721 return ptr;
722
723 list_for_each_entry(uuid, &hdev->uuids, list) {
724 u16 uuid16;
725
726 if (uuid->size != 16)
727 continue;
728
729 uuid16 = get_unaligned_le16(&uuid->uuid[12]);
730 if (uuid16 < 0x1100)
731 continue;
732
733 if (uuid16 == PNP_INFO_SVCLASS_ID)
734 continue;
735
736 if (!uuids_start) {
737 uuids_start = ptr;
738 uuids_start[0] = 1;
739 uuids_start[1] = EIR_UUID16_ALL;
740 ptr += 2;
741 }
742
743 /* Stop if not enough space to put next UUID */
744 if ((ptr - data) + sizeof(u16) > len) {
745 uuids_start[1] = EIR_UUID16_SOME;
746 break;
747 }
748
749 *ptr++ = (uuid16 & 0x00ff);
750 *ptr++ = (uuid16 & 0xff00) >> 8;
751 uuids_start[0] += sizeof(uuid16);
752 }
753
754 return ptr;
755 }
756
757 static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
758 {
759 u8 *ptr = data, *uuids_start = NULL;
760 struct bt_uuid *uuid;
761
762 if (len < 6)
763 return ptr;
764
765 list_for_each_entry(uuid, &hdev->uuids, list) {
766 if (uuid->size != 32)
767 continue;
768
769 if (!uuids_start) {
770 uuids_start = ptr;
771 uuids_start[0] = 1;
772 uuids_start[1] = EIR_UUID32_ALL;
773 ptr += 2;
774 }
775
776 /* Stop if not enough space to put next UUID */
777 if ((ptr - data) + sizeof(u32) > len) {
778 uuids_start[1] = EIR_UUID32_SOME;
779 break;
780 }
781
782 memcpy(ptr, &uuid->uuid[12], sizeof(u32));
783 ptr += sizeof(u32);
784 uuids_start[0] += sizeof(u32);
785 }
786
787 return ptr;
788 }
789
790 static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
791 {
792 u8 *ptr = data, *uuids_start = NULL;
793 struct bt_uuid *uuid;
794
795 if (len < 18)
796 return ptr;
797
798 list_for_each_entry(uuid, &hdev->uuids, list) {
799 if (uuid->size != 128)
800 continue;
801
802 if (!uuids_start) {
803 uuids_start = ptr;
804 uuids_start[0] = 1;
805 uuids_start[1] = EIR_UUID128_ALL;
806 ptr += 2;
807 }
808
809 /* Stop if not enough space to put next UUID */
810 if ((ptr - data) + 16 > len) {
811 uuids_start[1] = EIR_UUID128_SOME;
812 break;
813 }
814
815 memcpy(ptr, uuid->uuid, 16);
816 ptr += 16;
817 uuids_start[0] += 16;
818 }
819
820 return ptr;
821 }
822
823 static struct mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev)
824 {
825 return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev);
826 }
827
828 static struct mgmt_pending_cmd *pending_find_data(u16 opcode,
829 struct hci_dev *hdev,
830 const void *data)
831 {
832 return mgmt_pending_find_data(HCI_CHANNEL_CONTROL, opcode, hdev, data);
833 }
834
835 static u8 get_current_adv_instance(struct hci_dev *hdev)
836 {
837 /* The "Set Advertising" setting supersedes the "Add Advertising"
838 * setting. Here we set the advertising data based on which
839 * setting was set. When neither apply, default to the global settings,
840 * represented by instance "0".
841 */
842 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
843 !hci_dev_test_flag(hdev, HCI_ADVERTISING))
844 return hdev->cur_adv_instance;
845
846 return 0x00;
847 }
848
849 static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
850 {
851 u8 ad_len = 0;
852 size_t name_len;
853
854 name_len = strlen(hdev->dev_name);
855 if (name_len > 0) {
856 size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2;
857
858 if (name_len > max_len) {
859 name_len = max_len;
860 ptr[1] = EIR_NAME_SHORT;
861 } else
862 ptr[1] = EIR_NAME_COMPLETE;
863
864 ptr[0] = name_len + 1;
865
866 memcpy(ptr + 2, hdev->dev_name, name_len);
867
868 ad_len += (name_len + 2);
869 ptr += (name_len + 2);
870 }
871
872 return ad_len;
873 }
874
875 static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
876 u8 *ptr)
877 {
878 struct adv_info *adv_instance;
879
880 adv_instance = hci_find_adv_instance(hdev, instance);
881 if (!adv_instance)
882 return 0;
883
884 /* TODO: Set the appropriate entries based on advertising instance flags
885 * here once flags other than 0 are supported.
886 */
887 memcpy(ptr, adv_instance->scan_rsp_data,
888 adv_instance->scan_rsp_len);
889
890 return adv_instance->scan_rsp_len;
891 }
892
893 static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
894 {
895 struct hci_dev *hdev = req->hdev;
896 struct hci_cp_le_set_scan_rsp_data cp;
897 u8 len;
898
899 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
900 return;
901
902 memset(&cp, 0, sizeof(cp));
903
904 if (instance)
905 len = create_instance_scan_rsp_data(hdev, instance, cp.data);
906 else
907 len = create_default_scan_rsp_data(hdev, cp.data);
908
909 if (hdev->scan_rsp_data_len == len &&
910 !memcmp(cp.data, hdev->scan_rsp_data, len))
911 return;
912
913 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
914 hdev->scan_rsp_data_len = len;
915
916 cp.length = len;
917
918 hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
919 }
920
921 static void update_scan_rsp_data(struct hci_request *req)
922 {
923 update_inst_scan_rsp_data(req, get_current_adv_instance(req->hdev));
924 }
925
926 static u8 get_adv_discov_flags(struct hci_dev *hdev)
927 {
928 struct mgmt_pending_cmd *cmd;
929
930 /* If there's a pending mgmt command the flags will not yet have
931 * their final values, so check for this first.
932 */
933 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
934 if (cmd) {
935 struct mgmt_mode *cp = cmd->param;
936 if (cp->val == 0x01)
937 return LE_AD_GENERAL;
938 else if (cp->val == 0x02)
939 return LE_AD_LIMITED;
940 } else {
941 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
942 return LE_AD_LIMITED;
943 else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
944 return LE_AD_GENERAL;
945 }
946
947 return 0;
948 }
949
950 static bool get_connectable(struct hci_dev *hdev)
951 {
952 struct mgmt_pending_cmd *cmd;
953
954 /* If there's a pending mgmt command the flag will not yet have
955 * it's final value, so check for this first.
956 */
957 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
958 if (cmd) {
959 struct mgmt_mode *cp = cmd->param;
960
961 return cp->val;
962 }
963
964 return hci_dev_test_flag(hdev, HCI_CONNECTABLE);
965 }
966
967 static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance)
968 {
969 u32 flags;
970 struct adv_info *adv_instance;
971
972 if (instance == 0x00) {
973 /* Instance 0 always manages the "Tx Power" and "Flags"
974 * fields
975 */
976 flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
977
978 /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
979 * corresponds to the "connectable" instance flag.
980 */
981 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
982 flags |= MGMT_ADV_FLAG_CONNECTABLE;
983
984 return flags;
985 }
986
987 adv_instance = hci_find_adv_instance(hdev, instance);
988
989 /* Return 0 when we got an invalid instance identifier. */
990 if (!adv_instance)
991 return 0;
992
993 return adv_instance->flags;
994 }
995
996 static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
997 {
998 u8 instance = get_current_adv_instance(hdev);
999 struct adv_info *adv_instance;
1000
1001 /* Ignore instance 0 */
1002 if (instance == 0x00)
1003 return 0;
1004
1005 adv_instance = hci_find_adv_instance(hdev, instance);
1006 if (!adv_instance)
1007 return 0;
1008
1009 /* TODO: Take into account the "appearance" and "local-name" flags here.
1010 * These are currently being ignored as they are not supported.
1011 */
1012 return adv_instance->scan_rsp_len;
1013 }
1014
1015 static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
1016 {
1017 struct adv_info *adv_instance = NULL;
1018 u8 ad_len = 0, flags = 0;
1019 u32 instance_flags;
1020
1021 /* Return 0 when the current instance identifier is invalid. */
1022 if (instance) {
1023 adv_instance = hci_find_adv_instance(hdev, instance);
1024 if (!adv_instance)
1025 return 0;
1026 }
1027
1028 instance_flags = get_adv_instance_flags(hdev, instance);
1029
1030 /* The Add Advertising command allows userspace to set both the general
1031 * and limited discoverable flags.
1032 */
1033 if (instance_flags & MGMT_ADV_FLAG_DISCOV)
1034 flags |= LE_AD_GENERAL;
1035
1036 if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
1037 flags |= LE_AD_LIMITED;
1038
1039 if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
1040 /* If a discovery flag wasn't provided, simply use the global
1041 * settings.
1042 */
1043 if (!flags)
1044 flags |= get_adv_discov_flags(hdev);
1045
1046 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1047 flags |= LE_AD_NO_BREDR;
1048
1049 /* If flags would still be empty, then there is no need to
1050 * include the "Flags" AD field".
1051 */
1052 if (flags) {
1053 ptr[0] = 0x02;
1054 ptr[1] = EIR_FLAGS;
1055 ptr[2] = flags;
1056
1057 ad_len += 3;
1058 ptr += 3;
1059 }
1060 }
1061
1062 if (adv_instance) {
1063 memcpy(ptr, adv_instance->adv_data,
1064 adv_instance->adv_data_len);
1065 ad_len += adv_instance->adv_data_len;
1066 ptr += adv_instance->adv_data_len;
1067 }
1068
1069 /* Provide Tx Power only if we can provide a valid value for it */
1070 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID &&
1071 (instance_flags & MGMT_ADV_FLAG_TX_POWER)) {
1072 ptr[0] = 0x02;
1073 ptr[1] = EIR_TX_POWER;
1074 ptr[2] = (u8)hdev->adv_tx_power;
1075
1076 ad_len += 3;
1077 ptr += 3;
1078 }
1079
1080 return ad_len;
1081 }
1082
1083 static void update_inst_adv_data(struct hci_request *req, u8 instance)
1084 {
1085 struct hci_dev *hdev = req->hdev;
1086 struct hci_cp_le_set_adv_data cp;
1087 u8 len;
1088
1089 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1090 return;
1091
1092 memset(&cp, 0, sizeof(cp));
1093
1094 len = create_instance_adv_data(hdev, instance, cp.data);
1095
1096 /* There's nothing to do if the data hasn't changed */
1097 if (hdev->adv_data_len == len &&
1098 memcmp(cp.data, hdev->adv_data, len) == 0)
1099 return;
1100
1101 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1102 hdev->adv_data_len = len;
1103
1104 cp.length = len;
1105
1106 hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
1107 }
1108
1109 static void update_adv_data(struct hci_request *req)
1110 {
1111 update_inst_adv_data(req, get_current_adv_instance(req->hdev));
1112 }
1113
1114 int mgmt_update_adv_data(struct hci_dev *hdev)
1115 {
1116 struct hci_request req;
1117
1118 hci_req_init(&req, hdev);
1119 update_adv_data(&req);
1120
1121 return hci_req_run(&req, NULL);
1122 }
1123
1124 static void create_eir(struct hci_dev *hdev, u8 *data)
1125 {
1126 u8 *ptr = data;
1127 size_t name_len;
1128
1129 name_len = strlen(hdev->dev_name);
1130
1131 if (name_len > 0) {
1132 /* EIR Data type */
1133 if (name_len > 48) {
1134 name_len = 48;
1135 ptr[1] = EIR_NAME_SHORT;
1136 } else
1137 ptr[1] = EIR_NAME_COMPLETE;
1138
1139 /* EIR Data length */
1140 ptr[0] = name_len + 1;
1141
1142 memcpy(ptr + 2, hdev->dev_name, name_len);
1143
1144 ptr += (name_len + 2);
1145 }
1146
1147 if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
1148 ptr[0] = 2;
1149 ptr[1] = EIR_TX_POWER;
1150 ptr[2] = (u8) hdev->inq_tx_power;
1151
1152 ptr += 3;
1153 }
1154
1155 if (hdev->devid_source > 0) {
1156 ptr[0] = 9;
1157 ptr[1] = EIR_DEVICE_ID;
1158
1159 put_unaligned_le16(hdev->devid_source, ptr + 2);
1160 put_unaligned_le16(hdev->devid_vendor, ptr + 4);
1161 put_unaligned_le16(hdev->devid_product, ptr + 6);
1162 put_unaligned_le16(hdev->devid_version, ptr + 8);
1163
1164 ptr += 10;
1165 }
1166
1167 ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1168 ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1169 ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1170 }
1171
1172 static void update_eir(struct hci_request *req)
1173 {
1174 struct hci_dev *hdev = req->hdev;
1175 struct hci_cp_write_eir cp;
1176
1177 if (!hdev_is_powered(hdev))
1178 return;
1179
1180 if (!lmp_ext_inq_capable(hdev))
1181 return;
1182
1183 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
1184 return;
1185
1186 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1187 return;
1188
1189 memset(&cp, 0, sizeof(cp));
1190
1191 create_eir(hdev, cp.data);
1192
1193 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
1194 return;
1195
1196 memcpy(hdev->eir, cp.data, sizeof(cp.data));
1197
1198 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
1199 }
1200
1201 static u8 get_service_classes(struct hci_dev *hdev)
1202 {
1203 struct bt_uuid *uuid;
1204 u8 val = 0;
1205
1206 list_for_each_entry(uuid, &hdev->uuids, list)
1207 val |= uuid->svc_hint;
1208
1209 return val;
1210 }
1211
1212 static void update_class(struct hci_request *req)
1213 {
1214 struct hci_dev *hdev = req->hdev;
1215 u8 cod[3];
1216
1217 BT_DBG("%s", hdev->name);
1218
1219 if (!hdev_is_powered(hdev))
1220 return;
1221
1222 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1223 return;
1224
1225 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1226 return;
1227
1228 cod[0] = hdev->minor_class;
1229 cod[1] = hdev->major_class;
1230 cod[2] = get_service_classes(hdev);
1231
1232 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
1233 cod[1] |= 0x20;
1234
1235 if (memcmp(cod, hdev->dev_class, 3) == 0)
1236 return;
1237
1238 hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
1239 }
1240
1241 static void disable_advertising(struct hci_request *req)
1242 {
1243 u8 enable = 0x00;
1244
1245 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1246 }
1247
1248 static void enable_advertising(struct hci_request *req)
1249 {
1250 struct hci_dev *hdev = req->hdev;
1251 struct hci_cp_le_set_adv_param cp;
1252 u8 own_addr_type, enable = 0x01;
1253 bool connectable;
1254 u8 instance;
1255 u32 flags;
1256
1257 if (hci_conn_num(hdev, LE_LINK) > 0)
1258 return;
1259
1260 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1261 disable_advertising(req);
1262
1263 /* Clear the HCI_LE_ADV bit temporarily so that the
1264 * hci_update_random_address knows that it's safe to go ahead
1265 * and write a new random address. The flag will be set back on
1266 * as soon as the SET_ADV_ENABLE HCI command completes.
1267 */
1268 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1269
1270 instance = get_current_adv_instance(hdev);
1271 flags = get_adv_instance_flags(hdev, instance);
1272
1273 /* If the "connectable" instance flag was not set, then choose between
1274 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1275 */
1276 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1277 get_connectable(hdev);
1278
1279 /* Set require_privacy to true only when non-connectable
1280 * advertising is used. In that case it is fine to use a
1281 * non-resolvable private address.
1282 */
1283 if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
1284 return;
1285
1286 memset(&cp, 0, sizeof(cp));
1287 cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval);
1288 cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval);
1289
1290 if (connectable)
1291 cp.type = LE_ADV_IND;
1292 else if (get_cur_adv_instance_scan_rsp_len(hdev))
1293 cp.type = LE_ADV_SCAN_IND;
1294 else
1295 cp.type = LE_ADV_NONCONN_IND;
1296
1297 cp.own_address_type = own_addr_type;
1298 cp.channel_map = hdev->le_adv_channel_map;
1299
1300 hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
1301
1302 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1303 }
1304
1305 static void service_cache_off(struct work_struct *work)
1306 {
1307 struct hci_dev *hdev = container_of(work, struct hci_dev,
1308 service_cache.work);
1309 struct hci_request req;
1310
1311 if (!hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
1312 return;
1313
1314 hci_req_init(&req, hdev);
1315
1316 hci_dev_lock(hdev);
1317
1318 update_eir(&req);
1319 update_class(&req);
1320
1321 hci_dev_unlock(hdev);
1322
1323 hci_req_run(&req, NULL);
1324 }
1325
1326 static void rpa_expired(struct work_struct *work)
1327 {
1328 struct hci_dev *hdev = container_of(work, struct hci_dev,
1329 rpa_expired.work);
1330 struct hci_request req;
1331
1332 BT_DBG("");
1333
1334 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
1335
1336 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING))
1337 return;
1338
1339 /* The generation of a new RPA and programming it into the
1340 * controller happens in the enable_advertising() function.
1341 */
1342 hci_req_init(&req, hdev);
1343 enable_advertising(&req);
1344 hci_req_run(&req, NULL);
1345 }
1346
1347 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
1348 {
1349 if (hci_dev_test_and_set_flag(hdev, HCI_MGMT))
1350 return;
1351
1352 INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
1353 INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
1354
1355 /* Non-mgmt controlled devices get this bit set
1356 * implicitly so that pairing works for them, however
1357 * for mgmt we require user-space to explicitly enable
1358 * it
1359 */
1360 hci_dev_clear_flag(hdev, HCI_BONDABLE);
1361 }
1362
1363 static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
1364 void *data, u16 data_len)
1365 {
1366 struct mgmt_rp_read_info rp;
1367
1368 BT_DBG("sock %p %s", sk, hdev->name);
1369
1370 hci_dev_lock(hdev);
1371
1372 memset(&rp, 0, sizeof(rp));
1373
1374 bacpy(&rp.bdaddr, &hdev->bdaddr);
1375
1376 rp.version = hdev->hci_ver;
1377 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
1378
1379 rp.supported_settings = cpu_to_le32(get_supported_settings(hdev));
1380 rp.current_settings = cpu_to_le32(get_current_settings(hdev));
1381
1382 memcpy(rp.dev_class, hdev->dev_class, 3);
1383
1384 memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name));
1385 memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name));
1386
1387 hci_dev_unlock(hdev);
1388
1389 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp,
1390 sizeof(rp));
1391 }
1392
1393 static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
1394 {
1395 __le32 settings = cpu_to_le32(get_current_settings(hdev));
1396
1397 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &settings,
1398 sizeof(settings));
1399 }
1400
1401 static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode)
1402 {
1403 BT_DBG("%s status 0x%02x", hdev->name, status);
1404
1405 if (hci_conn_count(hdev) == 0) {
1406 cancel_delayed_work(&hdev->power_off);
1407 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1408 }
1409 }
1410
1411 static bool hci_stop_discovery(struct hci_request *req)
1412 {
1413 struct hci_dev *hdev = req->hdev;
1414 struct hci_cp_remote_name_req_cancel cp;
1415 struct inquiry_entry *e;
1416
1417 switch (hdev->discovery.state) {
1418 case DISCOVERY_FINDING:
1419 if (test_bit(HCI_INQUIRY, &hdev->flags))
1420 hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
1421
1422 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1423 cancel_delayed_work(&hdev->le_scan_disable);
1424 hci_req_add_le_scan_disable(req);
1425 }
1426
1427 return true;
1428
1429 case DISCOVERY_RESOLVING:
1430 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
1431 NAME_PENDING);
1432 if (!e)
1433 break;
1434
1435 bacpy(&cp.bdaddr, &e->data.bdaddr);
1436 hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
1437 &cp);
1438
1439 return true;
1440
1441 default:
1442 /* Passive scanning */
1443 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1444 hci_req_add_le_scan_disable(req);
1445 return true;
1446 }
1447
1448 break;
1449 }
1450
1451 return false;
1452 }
1453
1454 static void advertising_added(struct sock *sk, struct hci_dev *hdev,
1455 u8 instance)
1456 {
1457 struct mgmt_ev_advertising_added ev;
1458
1459 ev.instance = instance;
1460
1461 mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk);
1462 }
1463
1464 static void advertising_removed(struct sock *sk, struct hci_dev *hdev,
1465 u8 instance)
1466 {
1467 struct mgmt_ev_advertising_removed ev;
1468
1469 ev.instance = instance;
1470
1471 mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk);
1472 }
1473
1474 static int schedule_adv_instance(struct hci_request *req, u8 instance,
1475 bool force) {
1476 struct hci_dev *hdev = req->hdev;
1477 struct adv_info *adv_instance = NULL;
1478 u16 timeout;
1479
1480 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
1481 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
1482 return -EPERM;
1483
1484 if (hdev->adv_instance_timeout)
1485 return -EBUSY;
1486
1487 adv_instance = hci_find_adv_instance(hdev, instance);
1488 if (!adv_instance)
1489 return -ENOENT;
1490
1491 /* A zero timeout means unlimited advertising. As long as there is
1492 * only one instance, duration should be ignored. We still set a timeout
1493 * in case further instances are being added later on.
1494 *
1495 * If the remaining lifetime of the instance is more than the duration
1496 * then the timeout corresponds to the duration, otherwise it will be
1497 * reduced to the remaining instance lifetime.
1498 */
1499 if (adv_instance->timeout == 0 ||
1500 adv_instance->duration <= adv_instance->remaining_time)
1501 timeout = adv_instance->duration;
1502 else
1503 timeout = adv_instance->remaining_time;
1504
1505 /* The remaining time is being reduced unless the instance is being
1506 * advertised without time limit.
1507 */
1508 if (adv_instance->timeout)
1509 adv_instance->remaining_time =
1510 adv_instance->remaining_time - timeout;
1511
1512 hdev->adv_instance_timeout = timeout;
1513 queue_delayed_work(hdev->workqueue,
1514 &hdev->adv_instance_expire,
1515 msecs_to_jiffies(timeout * 1000));
1516
1517 /* If we're just re-scheduling the same instance again then do not
1518 * execute any HCI commands. This happens when a single instance is
1519 * being advertised.
1520 */
1521 if (!force && hdev->cur_adv_instance == instance &&
1522 hci_dev_test_flag(hdev, HCI_LE_ADV))
1523 return 0;
1524
1525 hdev->cur_adv_instance = instance;
1526 update_adv_data(req);
1527 update_scan_rsp_data(req);
1528 enable_advertising(req);
1529
1530 return 0;
1531 }
1532
1533 static void cancel_adv_timeout(struct hci_dev *hdev)
1534 {
1535 if (hdev->adv_instance_timeout) {
1536 hdev->adv_instance_timeout = 0;
1537 cancel_delayed_work(&hdev->adv_instance_expire);
1538 }
1539 }
1540
1541 /* For a single instance:
1542 * - force == true: The instance will be removed even when its remaining
1543 * lifetime is not zero.
1544 * - force == false: the instance will be deactivated but kept stored unless
1545 * the remaining lifetime is zero.
1546 *
1547 * For instance == 0x00:
1548 * - force == true: All instances will be removed regardless of their timeout
1549 * setting.
1550 * - force == false: Only instances that have a timeout will be removed.
1551 */
1552 static void clear_adv_instance(struct hci_dev *hdev, struct hci_request *req,
1553 u8 instance, bool force)
1554 {
1555 struct adv_info *adv_instance, *n, *next_instance = NULL;
1556 int err;
1557 u8 rem_inst;
1558
1559 /* Cancel any timeout concerning the removed instance(s). */
1560 if (!instance || hdev->cur_adv_instance == instance)
1561 cancel_adv_timeout(hdev);
1562
1563 /* Get the next instance to advertise BEFORE we remove
1564 * the current one. This can be the same instance again
1565 * if there is only one instance.
1566 */
1567 if (instance && hdev->cur_adv_instance == instance)
1568 next_instance = hci_get_next_instance(hdev, instance);
1569
1570 if (instance == 0x00) {
1571 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
1572 list) {
1573 if (!(force || adv_instance->timeout))
1574 continue;
1575
1576 rem_inst = adv_instance->instance;
1577 err = hci_remove_adv_instance(hdev, rem_inst);
1578 if (!err)
1579 advertising_removed(NULL, hdev, rem_inst);
1580 }
1581 hdev->cur_adv_instance = 0x00;
1582 } else {
1583 adv_instance = hci_find_adv_instance(hdev, instance);
1584
1585 if (force || (adv_instance && adv_instance->timeout &&
1586 !adv_instance->remaining_time)) {
1587 /* Don't advertise a removed instance. */
1588 if (next_instance &&
1589 next_instance->instance == instance)
1590 next_instance = NULL;
1591
1592 err = hci_remove_adv_instance(hdev, instance);
1593 if (!err)
1594 advertising_removed(NULL, hdev, instance);
1595 }
1596 }
1597
1598 if (list_empty(&hdev->adv_instances)) {
1599 hdev->cur_adv_instance = 0x00;
1600 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
1601 }
1602
1603 if (!req || !hdev_is_powered(hdev) ||
1604 hci_dev_test_flag(hdev, HCI_ADVERTISING))
1605 return;
1606
1607 if (next_instance)
1608 schedule_adv_instance(req, next_instance->instance, false);
1609 }
1610
1611 static int clean_up_hci_state(struct hci_dev *hdev)
1612 {
1613 struct hci_request req;
1614 struct hci_conn *conn;
1615 bool discov_stopped;
1616 int err;
1617
1618 hci_req_init(&req, hdev);
1619
1620 if (test_bit(HCI_ISCAN, &hdev->flags) ||
1621 test_bit(HCI_PSCAN, &hdev->flags)) {
1622 u8 scan = 0x00;
1623 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
1624 }
1625
1626 clear_adv_instance(hdev, NULL, 0x00, false);
1627
1628 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1629 disable_advertising(&req);
1630
1631 discov_stopped = hci_stop_discovery(&req);
1632
1633 list_for_each_entry(conn, &hdev->conn_hash.list, list) {
1634 struct hci_cp_disconnect dc;
1635 struct hci_cp_reject_conn_req rej;
1636
1637 switch (conn->state) {
1638 case BT_CONNECTED:
1639 case BT_CONFIG:
1640 dc.handle = cpu_to_le16(conn->handle);
1641 dc.reason = 0x15; /* Terminated due to Power Off */
1642 hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
1643 break;
1644 case BT_CONNECT:
1645 if (conn->type == LE_LINK)
1646 hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL,
1647 0, NULL);
1648 else if (conn->type == ACL_LINK)
1649 hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL,
1650 6, &conn->dst);
1651 break;
1652 case BT_CONNECT2:
1653 bacpy(&rej.bdaddr, &conn->dst);
1654 rej.reason = 0x15; /* Terminated due to Power Off */
1655 if (conn->type == ACL_LINK)
1656 hci_req_add(&req, HCI_OP_REJECT_CONN_REQ,
1657 sizeof(rej), &rej);
1658 else if (conn->type == SCO_LINK)
1659 hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ,
1660 sizeof(rej), &rej);
1661 break;
1662 }
1663 }
1664
1665 err = hci_req_run(&req, clean_up_hci_complete);
1666 if (!err && discov_stopped)
1667 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
1668
1669 return err;
1670 }
1671
1672 static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
1673 u16 len)
1674 {
1675 struct mgmt_mode *cp = data;
1676 struct mgmt_pending_cmd *cmd;
1677 int err;
1678
1679 BT_DBG("request for %s", hdev->name);
1680
1681 if (cp->val != 0x00 && cp->val != 0x01)
1682 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1683 MGMT_STATUS_INVALID_PARAMS);
1684
1685 hci_dev_lock(hdev);
1686
1687 if (pending_find(MGMT_OP_SET_POWERED, hdev)) {
1688 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1689 MGMT_STATUS_BUSY);
1690 goto failed;
1691 }
1692
1693 if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
1694 cancel_delayed_work(&hdev->power_off);
1695
1696 if (cp->val) {
1697 mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev,
1698 data, len);
1699 err = mgmt_powered(hdev, 1);
1700 goto failed;
1701 }
1702 }
1703
1704 if (!!cp->val == hdev_is_powered(hdev)) {
1705 err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev);
1706 goto failed;
1707 }
1708
1709 cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len);
1710 if (!cmd) {
1711 err = -ENOMEM;
1712 goto failed;
1713 }
1714
1715 if (cp->val) {
1716 queue_work(hdev->req_workqueue, &hdev->power_on);
1717 err = 0;
1718 } else {
1719 /* Disconnect connections, stop scans, etc */
1720 err = clean_up_hci_state(hdev);
1721 if (!err)
1722 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
1723 HCI_POWER_OFF_TIMEOUT);
1724
1725 /* ENODATA means there were no HCI commands queued */
1726 if (err == -ENODATA) {
1727 cancel_delayed_work(&hdev->power_off);
1728 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1729 err = 0;
1730 }
1731 }
1732
1733 failed:
1734 hci_dev_unlock(hdev);
1735 return err;
1736 }
1737
1738 static int new_settings(struct hci_dev *hdev, struct sock *skip)
1739 {
1740 __le32 ev = cpu_to_le32(get_current_settings(hdev));
1741
1742 return mgmt_generic_event(MGMT_EV_NEW_SETTINGS, hdev, &ev,
1743 sizeof(ev), skip);
1744 }
1745
1746 int mgmt_new_settings(struct hci_dev *hdev)
1747 {
1748 return new_settings(hdev, NULL);
1749 }
1750
1751 struct cmd_lookup {
1752 struct sock *sk;
1753 struct hci_dev *hdev;
1754 u8 mgmt_status;
1755 };
1756
1757 static void settings_rsp(struct mgmt_pending_cmd *cmd, void *data)
1758 {
1759 struct cmd_lookup *match = data;
1760
1761 send_settings_rsp(cmd->sk, cmd->opcode, match->hdev);
1762
1763 list_del(&cmd->list);
1764
1765 if (match->sk == NULL) {
1766 match->sk = cmd->sk;
1767 sock_hold(match->sk);
1768 }
1769
1770 mgmt_pending_free(cmd);
1771 }
1772
1773 static void cmd_status_rsp(struct mgmt_pending_cmd *cmd, void *data)
1774 {
1775 u8 *status = data;
1776
1777 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, *status);
1778 mgmt_pending_remove(cmd);
1779 }
1780
1781 static void cmd_complete_rsp(struct mgmt_pending_cmd *cmd, void *data)
1782 {
1783 if (cmd->cmd_complete) {
1784 u8 *status = data;
1785
1786 cmd->cmd_complete(cmd, *status);
1787 mgmt_pending_remove(cmd);
1788
1789 return;
1790 }
1791
1792 cmd_status_rsp(cmd, data);
1793 }
1794
1795 static int generic_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1796 {
1797 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1798 cmd->param, cmd->param_len);
1799 }
1800
1801 static int addr_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1802 {
1803 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1804 cmd->param, sizeof(struct mgmt_addr_info));
1805 }
1806
1807 static u8 mgmt_bredr_support(struct hci_dev *hdev)
1808 {
1809 if (!lmp_bredr_capable(hdev))
1810 return MGMT_STATUS_NOT_SUPPORTED;
1811 else if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1812 return MGMT_STATUS_REJECTED;
1813 else
1814 return MGMT_STATUS_SUCCESS;
1815 }
1816
1817 static u8 mgmt_le_support(struct hci_dev *hdev)
1818 {
1819 if (!lmp_le_capable(hdev))
1820 return MGMT_STATUS_NOT_SUPPORTED;
1821 else if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1822 return MGMT_STATUS_REJECTED;
1823 else
1824 return MGMT_STATUS_SUCCESS;
1825 }
1826
1827 static void set_discoverable_complete(struct hci_dev *hdev, u8 status,
1828 u16 opcode)
1829 {
1830 struct mgmt_pending_cmd *cmd;
1831 struct mgmt_mode *cp;
1832 struct hci_request req;
1833 bool changed;
1834
1835 BT_DBG("status 0x%02x", status);
1836
1837 hci_dev_lock(hdev);
1838
1839 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
1840 if (!cmd)
1841 goto unlock;
1842
1843 if (status) {
1844 u8 mgmt_err = mgmt_status(status);
1845 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
1846 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1847 goto remove_cmd;
1848 }
1849
1850 cp = cmd->param;
1851 if (cp->val) {
1852 changed = !hci_dev_test_and_set_flag(hdev, HCI_DISCOVERABLE);
1853
1854 if (hdev->discov_timeout > 0) {
1855 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1856 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1857 to);
1858 }
1859 } else {
1860 changed = hci_dev_test_and_clear_flag(hdev, HCI_DISCOVERABLE);
1861 }
1862
1863 send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1864
1865 if (changed)
1866 new_settings(hdev, cmd->sk);
1867
1868 /* When the discoverable mode gets changed, make sure
1869 * that class of device has the limited discoverable
1870 * bit correctly set. Also update page scan based on whitelist
1871 * entries.
1872 */
1873 hci_req_init(&req, hdev);
1874 __hci_update_page_scan(&req);
1875 update_class(&req);
1876 hci_req_run(&req, NULL);
1877
1878 remove_cmd:
1879 mgmt_pending_remove(cmd);
1880
1881 unlock:
1882 hci_dev_unlock(hdev);
1883 }
1884
1885 static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data,
1886 u16 len)
1887 {
1888 struct mgmt_cp_set_discoverable *cp = data;
1889 struct mgmt_pending_cmd *cmd;
1890 struct hci_request req;
1891 u16 timeout;
1892 u8 scan;
1893 int err;
1894
1895 BT_DBG("request for %s", hdev->name);
1896
1897 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
1898 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1899 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1900 MGMT_STATUS_REJECTED);
1901
1902 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
1903 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1904 MGMT_STATUS_INVALID_PARAMS);
1905
1906 timeout = __le16_to_cpu(cp->timeout);
1907
1908 /* Disabling discoverable requires that no timeout is set,
1909 * and enabling limited discoverable requires a timeout.
1910 */
1911 if ((cp->val == 0x00 && timeout > 0) ||
1912 (cp->val == 0x02 && timeout == 0))
1913 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1914 MGMT_STATUS_INVALID_PARAMS);
1915
1916 hci_dev_lock(hdev);
1917
1918 if (!hdev_is_powered(hdev) && timeout > 0) {
1919 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1920 MGMT_STATUS_NOT_POWERED);
1921 goto failed;
1922 }
1923
1924 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
1925 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
1926 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1927 MGMT_STATUS_BUSY);
1928 goto failed;
1929 }
1930
1931 if (!hci_dev_test_flag(hdev, HCI_CONNECTABLE)) {
1932 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1933 MGMT_STATUS_REJECTED);
1934 goto failed;
1935 }
1936
1937 if (!hdev_is_powered(hdev)) {
1938 bool changed = false;
1939
1940 /* Setting limited discoverable when powered off is
1941 * not a valid operation since it requires a timeout
1942 * and so no need to check HCI_LIMITED_DISCOVERABLE.
1943 */
1944 if (!!cp->val != hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) {
1945 hci_dev_change_flag(hdev, HCI_DISCOVERABLE);
1946 changed = true;
1947 }
1948
1949 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1950 if (err < 0)
1951 goto failed;
1952
1953 if (changed)
1954 err = new_settings(hdev, sk);
1955
1956 goto failed;
1957 }
1958
1959 /* If the current mode is the same, then just update the timeout
1960 * value with the new value. And if only the timeout gets updated,
1961 * then no need for any HCI transactions.
1962 */
1963 if (!!cp->val == hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
1964 (cp->val == 0x02) == hci_dev_test_flag(hdev,
1965 HCI_LIMITED_DISCOVERABLE)) {
1966 cancel_delayed_work(&hdev->discov_off);
1967 hdev->discov_timeout = timeout;
1968
1969 if (cp->val && hdev->discov_timeout > 0) {
1970 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1971 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1972 to);
1973 }
1974
1975 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1976 goto failed;
1977 }
1978
1979 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len);
1980 if (!cmd) {
1981 err = -ENOMEM;
1982 goto failed;
1983 }
1984
1985 /* Cancel any potential discoverable timeout that might be
1986 * still active and store new timeout value. The arming of
1987 * the timeout happens in the complete handler.
1988 */
1989 cancel_delayed_work(&hdev->discov_off);
1990 hdev->discov_timeout = timeout;
1991
1992 /* Limited discoverable mode */
1993 if (cp->val == 0x02)
1994 hci_dev_set_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1995 else
1996 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1997
1998 hci_req_init(&req, hdev);
1999
2000 /* The procedure for LE-only controllers is much simpler - just
2001 * update the advertising data.
2002 */
2003 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2004 goto update_ad;
2005
2006 scan = SCAN_PAGE;
2007
2008 if (cp->val) {
2009 struct hci_cp_write_current_iac_lap hci_cp;
2010
2011 if (cp->val == 0x02) {
2012 /* Limited discoverable mode */
2013 hci_cp.num_iac = min_t(u8, hdev->num_iac, 2);
2014 hci_cp.iac_lap[0] = 0x00; /* LIAC */
2015 hci_cp.iac_lap[1] = 0x8b;
2016 hci_cp.iac_lap[2] = 0x9e;
2017 hci_cp.iac_lap[3] = 0x33; /* GIAC */
2018 hci_cp.iac_lap[4] = 0x8b;
2019 hci_cp.iac_lap[5] = 0x9e;
2020 } else {
2021 /* General discoverable mode */
2022 hci_cp.num_iac = 1;
2023 hci_cp.iac_lap[0] = 0x33; /* GIAC */
2024 hci_cp.iac_lap[1] = 0x8b;
2025 hci_cp.iac_lap[2] = 0x9e;
2026 }
2027
2028 hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP,
2029 (hci_cp.num_iac * 3) + 1, &hci_cp);
2030
2031 scan |= SCAN_INQUIRY;
2032 } else {
2033 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2034 }
2035
2036 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan);
2037
2038 update_ad:
2039 update_adv_data(&req);
2040
2041 err = hci_req_run(&req, set_discoverable_complete);
2042 if (err < 0)
2043 mgmt_pending_remove(cmd);
2044
2045 failed:
2046 hci_dev_unlock(hdev);
2047 return err;
2048 }
2049
2050 static void write_fast_connectable(struct hci_request *req, bool enable)
2051 {
2052 struct hci_dev *hdev = req->hdev;
2053 struct hci_cp_write_page_scan_activity acp;
2054 u8 type;
2055
2056 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2057 return;
2058
2059 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2060 return;
2061
2062 if (enable) {
2063 type = PAGE_SCAN_TYPE_INTERLACED;
2064
2065 /* 160 msec page scan interval */
2066 acp.interval = cpu_to_le16(0x0100);
2067 } else {
2068 type = PAGE_SCAN_TYPE_STANDARD; /* default */
2069
2070 /* default 1.28 sec page scan */
2071 acp.interval = cpu_to_le16(0x0800);
2072 }
2073
2074 acp.window = cpu_to_le16(0x0012);
2075
2076 if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval ||
2077 __cpu_to_le16(hdev->page_scan_window) != acp.window)
2078 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
2079 sizeof(acp), &acp);
2080
2081 if (hdev->page_scan_type != type)
2082 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
2083 }
2084
2085 static void set_connectable_complete(struct hci_dev *hdev, u8 status,
2086 u16 opcode)
2087 {
2088 struct mgmt_pending_cmd *cmd;
2089 struct mgmt_mode *cp;
2090 bool conn_changed, discov_changed;
2091
2092 BT_DBG("status 0x%02x", status);
2093
2094 hci_dev_lock(hdev);
2095
2096 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
2097 if (!cmd)
2098 goto unlock;
2099
2100 if (status) {
2101 u8 mgmt_err = mgmt_status(status);
2102 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
2103 goto remove_cmd;
2104 }
2105
2106 cp = cmd->param;
2107 if (cp->val) {
2108 conn_changed = !hci_dev_test_and_set_flag(hdev,
2109 HCI_CONNECTABLE);
2110 discov_changed = false;
2111 } else {
2112 conn_changed = hci_dev_test_and_clear_flag(hdev,
2113 HCI_CONNECTABLE);
2114 discov_changed = hci_dev_test_and_clear_flag(hdev,
2115 HCI_DISCOVERABLE);
2116 }
2117
2118 send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev);
2119
2120 if (conn_changed || discov_changed) {
2121 new_settings(hdev, cmd->sk);
2122 hci_update_page_scan(hdev);
2123 if (discov_changed)
2124 mgmt_update_adv_data(hdev);
2125 hci_update_background_scan(hdev);
2126 }
2127
2128 remove_cmd:
2129 mgmt_pending_remove(cmd);
2130
2131 unlock:
2132 hci_dev_unlock(hdev);
2133 }
2134
2135 static int set_connectable_update_settings(struct hci_dev *hdev,
2136 struct sock *sk, u8 val)
2137 {
2138 bool changed = false;
2139 int err;
2140
2141 if (!!val != hci_dev_test_flag(hdev, HCI_CONNECTABLE))
2142 changed = true;
2143
2144 if (val) {
2145 hci_dev_set_flag(hdev, HCI_CONNECTABLE);
2146 } else {
2147 hci_dev_clear_flag(hdev, HCI_CONNECTABLE);
2148 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2149 }
2150
2151 err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
2152 if (err < 0)
2153 return err;
2154
2155 if (changed) {
2156 hci_update_page_scan(hdev);
2157 hci_update_background_scan(hdev);
2158 return new_settings(hdev, sk);
2159 }
2160
2161 return 0;
2162 }
2163
2164 static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data,
2165 u16 len)
2166 {
2167 struct mgmt_mode *cp = data;
2168 struct mgmt_pending_cmd *cmd;
2169 struct hci_request req;
2170 u8 scan;
2171 int err;
2172
2173 BT_DBG("request for %s", hdev->name);
2174
2175 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
2176 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2177 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2178 MGMT_STATUS_REJECTED);
2179
2180 if (cp->val != 0x00 && cp->val != 0x01)
2181 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2182 MGMT_STATUS_INVALID_PARAMS);
2183
2184 hci_dev_lock(hdev);
2185
2186 if (!hdev_is_powered(hdev)) {
2187 err = set_connectable_update_settings(hdev, sk, cp->val);
2188 goto failed;
2189 }
2190
2191 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
2192 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
2193 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2194 MGMT_STATUS_BUSY);
2195 goto failed;
2196 }
2197
2198 cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len);
2199 if (!cmd) {
2200 err = -ENOMEM;
2201 goto failed;
2202 }
2203
2204 hci_req_init(&req, hdev);
2205
2206 /* If BR/EDR is not enabled and we disable advertising as a
2207 * by-product of disabling connectable, we need to update the
2208 * advertising flags.
2209 */
2210 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2211 if (!cp->val) {
2212 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2213 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2214 }
2215 update_adv_data(&req);
2216 } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) {
2217 if (cp->val) {
2218 scan = SCAN_PAGE;
2219 } else {
2220 /* If we don't have any whitelist entries just
2221 * disable all scanning. If there are entries
2222 * and we had both page and inquiry scanning
2223 * enabled then fall back to only page scanning.
2224 * Otherwise no changes are needed.
2225 */
2226 if (list_empty(&hdev->whitelist))
2227 scan = SCAN_DISABLED;
2228 else if (test_bit(HCI_ISCAN, &hdev->flags))
2229 scan = SCAN_PAGE;
2230 else
2231 goto no_scan_update;
2232
2233 if (test_bit(HCI_ISCAN, &hdev->flags) &&
2234 hdev->discov_timeout > 0)
2235 cancel_delayed_work(&hdev->discov_off);
2236 }
2237
2238 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
2239 }
2240
2241 no_scan_update:
2242 /* Update the advertising parameters if necessary */
2243 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2244 hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
2245 enable_advertising(&req);
2246
2247 err = hci_req_run(&req, set_connectable_complete);
2248 if (err < 0) {
2249 mgmt_pending_remove(cmd);
2250 if (err == -ENODATA)
2251 err = set_connectable_update_settings(hdev, sk,
2252 cp->val);
2253 goto failed;
2254 }
2255
2256 failed:
2257 hci_dev_unlock(hdev);
2258 return err;
2259 }
2260
2261 static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data,
2262 u16 len)
2263 {
2264 struct mgmt_mode *cp = data;
2265 bool changed;
2266 int err;
2267
2268 BT_DBG("request for %s", hdev->name);
2269
2270 if (cp->val != 0x00 && cp->val != 0x01)
2271 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE,
2272 MGMT_STATUS_INVALID_PARAMS);
2273
2274 hci_dev_lock(hdev);
2275
2276 if (cp->val)
2277 changed = !hci_dev_test_and_set_flag(hdev, HCI_BONDABLE);
2278 else
2279 changed = hci_dev_test_and_clear_flag(hdev, HCI_BONDABLE);
2280
2281 err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev);
2282 if (err < 0)
2283 goto unlock;
2284
2285 if (changed)
2286 err = new_settings(hdev, sk);
2287
2288 unlock:
2289 hci_dev_unlock(hdev);
2290 return err;
2291 }
2292
2293 static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data,
2294 u16 len)
2295 {
2296 struct mgmt_mode *cp = data;
2297 struct mgmt_pending_cmd *cmd;
2298 u8 val, status;
2299 int err;
2300
2301 BT_DBG("request for %s", hdev->name);
2302
2303 status = mgmt_bredr_support(hdev);
2304 if (status)
2305 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2306 status);
2307
2308 if (cp->val != 0x00 && cp->val != 0x01)
2309 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2310 MGMT_STATUS_INVALID_PARAMS);
2311
2312 hci_dev_lock(hdev);
2313
2314 if (!hdev_is_powered(hdev)) {
2315 bool changed = false;
2316
2317 if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) {
2318 hci_dev_change_flag(hdev, HCI_LINK_SECURITY);
2319 changed = true;
2320 }
2321
2322 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2323 if (err < 0)
2324 goto failed;
2325
2326 if (changed)
2327 err = new_settings(hdev, sk);
2328
2329 goto failed;
2330 }
2331
2332 if (pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) {
2333 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2334 MGMT_STATUS_BUSY);
2335 goto failed;
2336 }
2337
2338 val = !!cp->val;
2339
2340 if (test_bit(HCI_AUTH, &hdev->flags) == val) {
2341 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2342 goto failed;
2343 }
2344
2345 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len);
2346 if (!cmd) {
2347 err = -ENOMEM;
2348 goto failed;
2349 }
2350
2351 err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val);
2352 if (err < 0) {
2353 mgmt_pending_remove(cmd);
2354 goto failed;
2355 }
2356
2357 failed:
2358 hci_dev_unlock(hdev);
2359 return err;
2360 }
2361
2362 static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2363 {
2364 struct mgmt_mode *cp = data;
2365 struct mgmt_pending_cmd *cmd;
2366 u8 status;
2367 int err;
2368
2369 BT_DBG("request for %s", hdev->name);
2370
2371 status = mgmt_bredr_support(hdev);
2372 if (status)
2373 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status);
2374
2375 if (!lmp_ssp_capable(hdev))
2376 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2377 MGMT_STATUS_NOT_SUPPORTED);
2378
2379 if (cp->val != 0x00 && cp->val != 0x01)
2380 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2381 MGMT_STATUS_INVALID_PARAMS);
2382
2383 hci_dev_lock(hdev);
2384
2385 if (!hdev_is_powered(hdev)) {
2386 bool changed;
2387
2388 if (cp->val) {
2389 changed = !hci_dev_test_and_set_flag(hdev,
2390 HCI_SSP_ENABLED);
2391 } else {
2392 changed = hci_dev_test_and_clear_flag(hdev,
2393 HCI_SSP_ENABLED);
2394 if (!changed)
2395 changed = hci_dev_test_and_clear_flag(hdev,
2396 HCI_HS_ENABLED);
2397 else
2398 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
2399 }
2400
2401 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2402 if (err < 0)
2403 goto failed;
2404
2405 if (changed)
2406 err = new_settings(hdev, sk);
2407
2408 goto failed;
2409 }
2410
2411 if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2412 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2413 MGMT_STATUS_BUSY);
2414 goto failed;
2415 }
2416
2417 if (!!cp->val == hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
2418 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2419 goto failed;
2420 }
2421
2422 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len);
2423 if (!cmd) {
2424 err = -ENOMEM;
2425 goto failed;
2426 }
2427
2428 if (!cp->val && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
2429 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2430 sizeof(cp->val), &cp->val);
2431
2432 err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val);
2433 if (err < 0) {
2434 mgmt_pending_remove(cmd);
2435 goto failed;
2436 }
2437
2438 failed:
2439 hci_dev_unlock(hdev);
2440 return err;
2441 }
2442
2443 static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2444 {
2445 struct mgmt_mode *cp = data;
2446 bool changed;
2447 u8 status;
2448 int err;
2449
2450 BT_DBG("request for %s", hdev->name);
2451
2452 status = mgmt_bredr_support(hdev);
2453 if (status)
2454 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
2455
2456 if (!lmp_ssp_capable(hdev))
2457 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2458 MGMT_STATUS_NOT_SUPPORTED);
2459
2460 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
2461 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2462 MGMT_STATUS_REJECTED);
2463
2464 if (cp->val != 0x00 && cp->val != 0x01)
2465 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2466 MGMT_STATUS_INVALID_PARAMS);
2467
2468 hci_dev_lock(hdev);
2469
2470 if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2471 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2472 MGMT_STATUS_BUSY);
2473 goto unlock;
2474 }
2475
2476 if (cp->val) {
2477 changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED);
2478 } else {
2479 if (hdev_is_powered(hdev)) {
2480 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2481 MGMT_STATUS_REJECTED);
2482 goto unlock;
2483 }
2484
2485 changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED);
2486 }
2487
2488 err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
2489 if (err < 0)
2490 goto unlock;
2491
2492 if (changed)
2493 err = new_settings(hdev, sk);
2494
2495 unlock:
2496 hci_dev_unlock(hdev);
2497 return err;
2498 }
2499
2500 static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2501 {
2502 struct cmd_lookup match = { NULL, hdev };
2503
2504 hci_dev_lock(hdev);
2505
2506 if (status) {
2507 u8 mgmt_err = mgmt_status(status);
2508
2509 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp,
2510 &mgmt_err);
2511 goto unlock;
2512 }
2513
2514 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match);
2515
2516 new_settings(hdev, match.sk);
2517
2518 if (match.sk)
2519 sock_put(match.sk);
2520
2521 /* Make sure the controller has a good default for
2522 * advertising data. Restrict the update to when LE
2523 * has actually been enabled. During power on, the
2524 * update in powered_update_hci will take care of it.
2525 */
2526 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2527 struct hci_request req;
2528
2529 hci_req_init(&req, hdev);
2530 update_adv_data(&req);
2531 update_scan_rsp_data(&req);
2532 __hci_update_background_scan(&req);
2533 hci_req_run(&req, NULL);
2534 }
2535
2536 unlock:
2537 hci_dev_unlock(hdev);
2538 }
2539
2540 static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2541 {
2542 struct mgmt_mode *cp = data;
2543 struct hci_cp_write_le_host_supported hci_cp;
2544 struct mgmt_pending_cmd *cmd;
2545 struct hci_request req;
2546 int err;
2547 u8 val, enabled;
2548
2549 BT_DBG("request for %s", hdev->name);
2550
2551 if (!lmp_le_capable(hdev))
2552 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2553 MGMT_STATUS_NOT_SUPPORTED);
2554
2555 if (cp->val != 0x00 && cp->val != 0x01)
2556 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2557 MGMT_STATUS_INVALID_PARAMS);
2558
2559 /* Bluetooth single mode LE only controllers or dual-mode
2560 * controllers configured as LE only devices, do not allow
2561 * switching LE off. These have either LE enabled explicitly
2562 * or BR/EDR has been previously switched off.
2563 *
2564 * When trying to enable an already enabled LE, then gracefully
2565 * send a positive response. Trying to disable it however will
2566 * result into rejection.
2567 */
2568 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2569 if (cp->val == 0x01)
2570 return send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2571
2572 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2573 MGMT_STATUS_REJECTED);
2574 }
2575
2576 hci_dev_lock(hdev);
2577
2578 val = !!cp->val;
2579 enabled = lmp_host_le_capable(hdev);
2580
2581 if (!val)
2582 clear_adv_instance(hdev, NULL, 0x00, true);
2583
2584 if (!hdev_is_powered(hdev) || val == enabled) {
2585 bool changed = false;
2586
2587 if (val != hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2588 hci_dev_change_flag(hdev, HCI_LE_ENABLED);
2589 changed = true;
2590 }
2591
2592 if (!val && hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
2593 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2594 changed = true;
2595 }
2596
2597 err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2598 if (err < 0)
2599 goto unlock;
2600
2601 if (changed)
2602 err = new_settings(hdev, sk);
2603
2604 goto unlock;
2605 }
2606
2607 if (pending_find(MGMT_OP_SET_LE, hdev) ||
2608 pending_find(MGMT_OP_SET_ADVERTISING, hdev)) {
2609 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2610 MGMT_STATUS_BUSY);
2611 goto unlock;
2612 }
2613
2614 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len);
2615 if (!cmd) {
2616 err = -ENOMEM;
2617 goto unlock;
2618 }
2619
2620 hci_req_init(&req, hdev);
2621
2622 memset(&hci_cp, 0, sizeof(hci_cp));
2623
2624 if (val) {
2625 hci_cp.le = val;
2626 hci_cp.simul = 0x00;
2627 } else {
2628 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
2629 disable_advertising(&req);
2630 }
2631
2632 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp),
2633 &hci_cp);
2634
2635 err = hci_req_run(&req, le_enable_complete);
2636 if (err < 0)
2637 mgmt_pending_remove(cmd);
2638
2639 unlock:
2640 hci_dev_unlock(hdev);
2641 return err;
2642 }
2643
2644 /* This is a helper function to test for pending mgmt commands that can
2645 * cause CoD or EIR HCI commands. We can only allow one such pending
2646 * mgmt command at a time since otherwise we cannot easily track what
2647 * the current values are, will be, and based on that calculate if a new
2648 * HCI command needs to be sent and if yes with what value.
2649 */
2650 static bool pending_eir_or_class(struct hci_dev *hdev)
2651 {
2652 struct mgmt_pending_cmd *cmd;
2653
2654 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
2655 switch (cmd->opcode) {
2656 case MGMT_OP_ADD_UUID:
2657 case MGMT_OP_REMOVE_UUID:
2658 case MGMT_OP_SET_DEV_CLASS:
2659 case MGMT_OP_SET_POWERED:
2660 return true;
2661 }
2662 }
2663
2664 return false;
2665 }
2666
2667 static const u8 bluetooth_base_uuid[] = {
2668 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
2669 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2670 };
2671
2672 static u8 get_uuid_size(const u8 *uuid)
2673 {
2674 u32 val;
2675
2676 if (memcmp(uuid, bluetooth_base_uuid, 12))
2677 return 128;
2678
2679 val = get_unaligned_le32(&uuid[12]);
2680 if (val > 0xffff)
2681 return 32;
2682
2683 return 16;
2684 }
2685
2686 static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status)
2687 {
2688 struct mgmt_pending_cmd *cmd;
2689
2690 hci_dev_lock(hdev);
2691
2692 cmd = pending_find(mgmt_op, hdev);
2693 if (!cmd)
2694 goto unlock;
2695
2696 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
2697 mgmt_status(status), hdev->dev_class, 3);
2698
2699 mgmt_pending_remove(cmd);
2700
2701 unlock:
2702 hci_dev_unlock(hdev);
2703 }
2704
2705 static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2706 {
2707 BT_DBG("status 0x%02x", status);
2708
2709 mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status);
2710 }
2711
2712 static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2713 {
2714 struct mgmt_cp_add_uuid *cp = data;
2715 struct mgmt_pending_cmd *cmd;
2716 struct hci_request req;
2717 struct bt_uuid *uuid;
2718 int err;
2719
2720 BT_DBG("request for %s", hdev->name);
2721
2722 hci_dev_lock(hdev);
2723
2724 if (pending_eir_or_class(hdev)) {
2725 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID,
2726 MGMT_STATUS_BUSY);
2727 goto failed;
2728 }
2729
2730 uuid = kmalloc(sizeof(*uuid), GFP_KERNEL);
2731 if (!uuid) {
2732 err = -ENOMEM;
2733 goto failed;
2734 }
2735
2736 memcpy(uuid->uuid, cp->uuid, 16);
2737 uuid->svc_hint = cp->svc_hint;
2738 uuid->size = get_uuid_size(cp->uuid);
2739
2740 list_add_tail(&uuid->list, &hdev->uuids);
2741
2742 hci_req_init(&req, hdev);
2743
2744 update_class(&req);
2745 update_eir(&req);
2746
2747 err = hci_req_run(&req, add_uuid_complete);
2748 if (err < 0) {
2749 if (err != -ENODATA)
2750 goto failed;
2751
2752 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0,
2753 hdev->dev_class, 3);
2754 goto failed;
2755 }
2756
2757 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len);
2758 if (!cmd) {
2759 err = -ENOMEM;
2760 goto failed;
2761 }
2762
2763 err = 0;
2764
2765 failed:
2766 hci_dev_unlock(hdev);
2767 return err;
2768 }
2769
2770 static bool enable_service_cache(struct hci_dev *hdev)
2771 {
2772 if (!hdev_is_powered(hdev))
2773 return false;
2774
2775 if (!hci_dev_test_and_set_flag(hdev, HCI_SERVICE_CACHE)) {
2776 queue_delayed_work(hdev->workqueue, &hdev->service_cache,
2777 CACHE_TIMEOUT);
2778 return true;
2779 }
2780
2781 return false;
2782 }
2783
2784 static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2785 {
2786 BT_DBG("status 0x%02x", status);
2787
2788 mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status);
2789 }
2790
2791 static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
2792 u16 len)
2793 {
2794 struct mgmt_cp_remove_uuid *cp = data;
2795 struct mgmt_pending_cmd *cmd;
2796 struct bt_uuid *match, *tmp;
2797 u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
2798 struct hci_request req;
2799 int err, found;
2800
2801 BT_DBG("request for %s", hdev->name);
2802
2803 hci_dev_lock(hdev);
2804
2805 if (pending_eir_or_class(hdev)) {
2806 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2807 MGMT_STATUS_BUSY);
2808 goto unlock;
2809 }
2810
2811 if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) {
2812 hci_uuids_clear(hdev);
2813
2814 if (enable_service_cache(hdev)) {
2815 err = mgmt_cmd_complete(sk, hdev->id,
2816 MGMT_OP_REMOVE_UUID,
2817 0, hdev->dev_class, 3);
2818 goto unlock;
2819 }
2820
2821 goto update_class;
2822 }
2823
2824 found = 0;
2825
2826 list_for_each_entry_safe(match, tmp, &hdev->uuids, list) {
2827 if (memcmp(match->uuid, cp->uuid, 16) != 0)
2828 continue;
2829
2830 list_del(&match->list);
2831 kfree(match);
2832 found++;
2833 }
2834
2835 if (found == 0) {
2836 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2837 MGMT_STATUS_INVALID_PARAMS);
2838 goto unlock;
2839 }
2840
2841 update_class:
2842 hci_req_init(&req, hdev);
2843
2844 update_class(&req);
2845 update_eir(&req);
2846
2847 err = hci_req_run(&req, remove_uuid_complete);
2848 if (err < 0) {
2849 if (err != -ENODATA)
2850 goto unlock;
2851
2852 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0,
2853 hdev->dev_class, 3);
2854 goto unlock;
2855 }
2856
2857 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len);
2858 if (!cmd) {
2859 err = -ENOMEM;
2860 goto unlock;
2861 }
2862
2863 err = 0;
2864
2865 unlock:
2866 hci_dev_unlock(hdev);
2867 return err;
2868 }
2869
2870 static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2871 {
2872 BT_DBG("status 0x%02x", status);
2873
2874 mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status);
2875 }
2876
2877 static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
2878 u16 len)
2879 {
2880 struct mgmt_cp_set_dev_class *cp = data;
2881 struct mgmt_pending_cmd *cmd;
2882 struct hci_request req;
2883 int err;
2884
2885 BT_DBG("request for %s", hdev->name);
2886
2887 if (!lmp_bredr_capable(hdev))
2888 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2889 MGMT_STATUS_NOT_SUPPORTED);
2890
2891 hci_dev_lock(hdev);
2892
2893 if (pending_eir_or_class(hdev)) {
2894 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2895 MGMT_STATUS_BUSY);
2896 goto unlock;
2897 }
2898
2899 if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
2900 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2901 MGMT_STATUS_INVALID_PARAMS);
2902 goto unlock;
2903 }
2904
2905 hdev->major_class = cp->major;
2906 hdev->minor_class = cp->minor;
2907
2908 if (!hdev_is_powered(hdev)) {
2909 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2910 hdev->dev_class, 3);
2911 goto unlock;
2912 }
2913
2914 hci_req_init(&req, hdev);
2915
2916 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) {
2917 hci_dev_unlock(hdev);
2918 cancel_delayed_work_sync(&hdev->service_cache);
2919 hci_dev_lock(hdev);
2920 update_eir(&req);
2921 }
2922
2923 update_class(&req);
2924
2925 err = hci_req_run(&req, set_class_complete);
2926 if (err < 0) {
2927 if (err != -ENODATA)
2928 goto unlock;
2929
2930 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2931 hdev->dev_class, 3);
2932 goto unlock;
2933 }
2934
2935 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len);
2936 if (!cmd) {
2937 err = -ENOMEM;
2938 goto unlock;
2939 }
2940
2941 err = 0;
2942
2943 unlock:
2944 hci_dev_unlock(hdev);
2945 return err;
2946 }
2947
2948 static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
2949 u16 len)
2950 {
2951 struct mgmt_cp_load_link_keys *cp = data;
2952 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
2953 sizeof(struct mgmt_link_key_info));
2954 u16 key_count, expected_len;
2955 bool changed;
2956 int i;
2957
2958 BT_DBG("request for %s", hdev->name);
2959
2960 if (!lmp_bredr_capable(hdev))
2961 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2962 MGMT_STATUS_NOT_SUPPORTED);
2963
2964 key_count = __le16_to_cpu(cp->key_count);
2965 if (key_count > max_key_count) {
2966 BT_ERR("load_link_keys: too big key_count value %u",
2967 key_count);
2968 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2969 MGMT_STATUS_INVALID_PARAMS);
2970 }
2971
2972 expected_len = sizeof(*cp) + key_count *
2973 sizeof(struct mgmt_link_key_info);
2974 if (expected_len != len) {
2975 BT_ERR("load_link_keys: expected %u bytes, got %u bytes",
2976 expected_len, len);
2977 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2978 MGMT_STATUS_INVALID_PARAMS);
2979 }
2980
2981 if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01)
2982 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2983 MGMT_STATUS_INVALID_PARAMS);
2984
2985 BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys,
2986 key_count);
2987
2988 for (i = 0; i < key_count; i++) {
2989 struct mgmt_link_key_info *key = &cp->keys[i];
2990
2991 if (key->addr.type != BDADDR_BREDR || key->type > 0x08)
2992 return mgmt_cmd_status(sk, hdev->id,
2993 MGMT_OP_LOAD_LINK_KEYS,
2994 MGMT_STATUS_INVALID_PARAMS);
2995 }
2996
2997 hci_dev_lock(hdev);
2998
2999 hci_link_keys_clear(hdev);
3000
3001 if (cp->debug_keys)
3002 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
3003 else
3004 changed = hci_dev_test_and_clear_flag(hdev,
3005 HCI_KEEP_DEBUG_KEYS);
3006
3007 if (changed)
3008 new_settings(hdev, NULL);
3009
3010 for (i = 0; i < key_count; i++) {
3011 struct mgmt_link_key_info *key = &cp->keys[i];
3012
3013 /* Always ignore debug keys and require a new pairing if
3014 * the user wants to use them.
3015 */
3016 if (key->type == HCI_LK_DEBUG_COMBINATION)
3017 continue;
3018
3019 hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
3020 key->type, key->pin_len, NULL);
3021 }
3022
3023 mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0);
3024
3025 hci_dev_unlock(hdev);
3026
3027 return 0;
3028 }
3029
3030 static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr,
3031 u8 addr_type, struct sock *skip_sk)
3032 {
3033 struct mgmt_ev_device_unpaired ev;
3034
3035 bacpy(&ev.addr.bdaddr, bdaddr);
3036 ev.addr.type = addr_type;
3037
3038 return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev),
3039 skip_sk);
3040 }
3041
3042 static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3043 u16 len)
3044 {
3045 struct mgmt_cp_unpair_device *cp = data;
3046 struct mgmt_rp_unpair_device rp;
3047 struct hci_cp_disconnect dc;
3048 struct mgmt_pending_cmd *cmd;
3049 struct hci_conn *conn;
3050 int err;
3051
3052 memset(&rp, 0, sizeof(rp));
3053 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3054 rp.addr.type = cp->addr.type;
3055
3056 if (!bdaddr_type_is_valid(cp->addr.type))
3057 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3058 MGMT_STATUS_INVALID_PARAMS,
3059 &rp, sizeof(rp));
3060
3061 if (cp->disconnect != 0x00 && cp->disconnect != 0x01)
3062 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3063 MGMT_STATUS_INVALID_PARAMS,
3064 &rp, sizeof(rp));
3065
3066 hci_dev_lock(hdev);
3067
3068 if (!hdev_is_powered(hdev)) {
3069 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3070 MGMT_STATUS_NOT_POWERED, &rp,
3071 sizeof(rp));
3072 goto unlock;
3073 }
3074
3075 if (cp->addr.type == BDADDR_BREDR) {
3076 /* If disconnection is requested, then look up the
3077 * connection. If the remote device is connected, it
3078 * will be later used to terminate the link.
3079 *
3080 * Setting it to NULL explicitly will cause no
3081 * termination of the link.
3082 */
3083 if (cp->disconnect)
3084 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3085 &cp->addr.bdaddr);
3086 else
3087 conn = NULL;
3088
3089 err = hci_remove_link_key(hdev, &cp->addr.bdaddr);
3090 } else {
3091 u8 addr_type;
3092
3093 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK,
3094 &cp->addr.bdaddr);
3095 if (conn) {
3096 /* Defer clearing up the connection parameters
3097 * until closing to give a chance of keeping
3098 * them if a repairing happens.
3099 */
3100 set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3101
3102 /* If disconnection is not requested, then
3103 * clear the connection variable so that the
3104 * link is not terminated.
3105 */
3106 if (!cp->disconnect)
3107 conn = NULL;
3108 }
3109
3110 if (cp->addr.type == BDADDR_LE_PUBLIC)
3111 addr_type = ADDR_LE_DEV_PUBLIC;
3112 else
3113 addr_type = ADDR_LE_DEV_RANDOM;
3114
3115 hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
3116
3117 err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
3118 }
3119
3120 if (err < 0) {
3121 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3122 MGMT_STATUS_NOT_PAIRED, &rp,
3123 sizeof(rp));
3124 goto unlock;
3125 }
3126
3127 /* If the connection variable is set, then termination of the
3128 * link is requested.
3129 */
3130 if (!conn) {
3131 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0,
3132 &rp, sizeof(rp));
3133 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk);
3134 goto unlock;
3135 }
3136
3137 cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp,
3138 sizeof(*cp));
3139 if (!cmd) {
3140 err = -ENOMEM;
3141 goto unlock;
3142 }
3143
3144 cmd->cmd_complete = addr_cmd_complete;
3145
3146 dc.handle = cpu_to_le16(conn->handle);
3147 dc.reason = 0x13; /* Remote User Terminated Connection */
3148 err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc);
3149 if (err < 0)
3150 mgmt_pending_remove(cmd);
3151
3152 unlock:
3153 hci_dev_unlock(hdev);
3154 return err;
3155 }
3156
3157 static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
3158 u16 len)
3159 {
3160 struct mgmt_cp_disconnect *cp = data;
3161 struct mgmt_rp_disconnect rp;
3162 struct mgmt_pending_cmd *cmd;
3163 struct hci_conn *conn;
3164 int err;
3165
3166 BT_DBG("");
3167
3168 memset(&rp, 0, sizeof(rp));
3169 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3170 rp.addr.type = cp->addr.type;
3171
3172 if (!bdaddr_type_is_valid(cp->addr.type))
3173 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3174 MGMT_STATUS_INVALID_PARAMS,
3175 &rp, sizeof(rp));
3176
3177 hci_dev_lock(hdev);
3178
3179 if (!test_bit(HCI_UP, &hdev->flags)) {
3180 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3181 MGMT_STATUS_NOT_POWERED, &rp,
3182 sizeof(rp));
3183 goto failed;
3184 }
3185
3186 if (pending_find(MGMT_OP_DISCONNECT, hdev)) {
3187 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3188 MGMT_STATUS_BUSY, &rp, sizeof(rp));
3189 goto failed;
3190 }
3191
3192 if (cp->addr.type == BDADDR_BREDR)
3193 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3194 &cp->addr.bdaddr);
3195 else
3196 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
3197
3198 if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) {
3199 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3200 MGMT_STATUS_NOT_CONNECTED, &rp,
3201 sizeof(rp));
3202 goto failed;
3203 }
3204
3205 cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len);
3206 if (!cmd) {
3207 err = -ENOMEM;
3208 goto failed;
3209 }
3210
3211 cmd->cmd_complete = generic_cmd_complete;
3212
3213 err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM);
3214 if (err < 0)
3215 mgmt_pending_remove(cmd);
3216
3217 failed:
3218 hci_dev_unlock(hdev);
3219 return err;
3220 }
3221
3222 static u8 link_to_bdaddr(u8 link_type, u8 addr_type)
3223 {
3224 switch (link_type) {
3225 case LE_LINK:
3226 switch (addr_type) {
3227 case ADDR_LE_DEV_PUBLIC:
3228 return BDADDR_LE_PUBLIC;
3229
3230 default:
3231 /* Fallback to LE Random address type */
3232 return BDADDR_LE_RANDOM;
3233 }
3234
3235 default:
3236 /* Fallback to BR/EDR type */
3237 return BDADDR_BREDR;
3238 }
3239 }
3240
3241 static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data,
3242 u16 data_len)
3243 {
3244 struct mgmt_rp_get_connections *rp;
3245 struct hci_conn *c;
3246 size_t rp_len;
3247 int err;
3248 u16 i;
3249
3250 BT_DBG("");
3251
3252 hci_dev_lock(hdev);
3253
3254 if (!hdev_is_powered(hdev)) {
3255 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS,
3256 MGMT_STATUS_NOT_POWERED);
3257 goto unlock;
3258 }
3259
3260 i = 0;
3261 list_for_each_entry(c, &hdev->conn_hash.list, list) {
3262 if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3263 i++;
3264 }
3265
3266 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3267 rp = kmalloc(rp_len, GFP_KERNEL);
3268 if (!rp) {
3269 err = -ENOMEM;
3270 goto unlock;
3271 }
3272
3273 i = 0;
3274 list_for_each_entry(c, &hdev->conn_hash.list, list) {
3275 if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3276 continue;
3277 bacpy(&rp->addr[i].bdaddr, &c->dst);
3278 rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type);
3279 if (c->type == SCO_LINK || c->type == ESCO_LINK)
3280 continue;
3281 i++;
3282 }
3283
3284 rp->conn_count = cpu_to_le16(i);
3285
3286 /* Recalculate length in case of filtered SCO connections, etc */
3287 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3288
3289 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp,
3290 rp_len);
3291
3292 kfree(rp);
3293
3294 unlock:
3295 hci_dev_unlock(hdev);
3296 return err;
3297 }
3298
3299 static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3300 struct mgmt_cp_pin_code_neg_reply *cp)
3301 {
3302 struct mgmt_pending_cmd *cmd;
3303 int err;
3304
3305 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp,
3306 sizeof(*cp));
3307 if (!cmd)
3308 return -ENOMEM;
3309
3310 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3311 sizeof(cp->addr.bdaddr), &cp->addr.bdaddr);
3312 if (err < 0)
3313 mgmt_pending_remove(cmd);
3314
3315 return err;
3316 }
3317
3318 static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3319 u16 len)
3320 {
3321 struct hci_conn *conn;
3322 struct mgmt_cp_pin_code_reply *cp = data;
3323 struct hci_cp_pin_code_reply reply;
3324 struct mgmt_pending_cmd *cmd;
3325 int err;
3326
3327 BT_DBG("");
3328
3329 hci_dev_lock(hdev);
3330
3331 if (!hdev_is_powered(hdev)) {
3332 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3333 MGMT_STATUS_NOT_POWERED);
3334 goto failed;
3335 }
3336
3337 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr);
3338 if (!conn) {
3339 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3340 MGMT_STATUS_NOT_CONNECTED);
3341 goto failed;
3342 }
3343
3344 if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) {
3345 struct mgmt_cp_pin_code_neg_reply ncp;
3346
3347 memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr));
3348
3349 BT_ERR("PIN code is not 16 bytes long");
3350
3351 err = send_pin_code_neg_reply(sk, hdev, &ncp);
3352 if (err >= 0)
3353 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3354 MGMT_STATUS_INVALID_PARAMS);
3355
3356 goto failed;
3357 }
3358
3359 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len);
3360 if (!cmd) {
3361 err = -ENOMEM;
3362 goto failed;
3363 }
3364
3365 cmd->cmd_complete = addr_cmd_complete;
3366
3367 bacpy(&reply.bdaddr, &cp->addr.bdaddr);
3368 reply.pin_len = cp->pin_len;
3369 memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code));
3370
3371 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply);
3372 if (err < 0)
3373 mgmt_pending_remove(cmd);
3374
3375 failed:
3376 hci_dev_unlock(hdev);
3377 return err;
3378 }
3379
3380 static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data,
3381 u16 len)
3382 {
3383 struct mgmt_cp_set_io_capability *cp = data;
3384
3385 BT_DBG("");
3386
3387 if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY)
3388 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY,
3389 MGMT_STATUS_INVALID_PARAMS, NULL, 0);
3390
3391 hci_dev_lock(hdev);
3392
3393 hdev->io_capability = cp->io_capability;
3394
3395 BT_DBG("%s IO capability set to 0x%02x", hdev->name,
3396 hdev->io_capability);
3397
3398 hci_dev_unlock(hdev);
3399
3400 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0,
3401 NULL, 0);
3402 }
3403
3404 static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn)
3405 {
3406 struct hci_dev *hdev = conn->hdev;
3407 struct mgmt_pending_cmd *cmd;
3408
3409 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
3410 if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
3411 continue;
3412
3413 if (cmd->user_data != conn)
3414 continue;
3415
3416 return cmd;
3417 }
3418
3419 return NULL;
3420 }
3421
3422 static int pairing_complete(struct mgmt_pending_cmd *cmd, u8 status)
3423 {
3424 struct mgmt_rp_pair_device rp;
3425 struct hci_conn *conn = cmd->user_data;
3426 int err;
3427
3428 bacpy(&rp.addr.bdaddr, &conn->dst);
3429 rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
3430
3431 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE,
3432 status, &rp, sizeof(rp));
3433
3434 /* So we don't get further callbacks for this connection */
3435 conn->connect_cfm_cb = NULL;
3436 conn->security_cfm_cb = NULL;
3437 conn->disconn_cfm_cb = NULL;
3438
3439 hci_conn_drop(conn);
3440
3441 /* The device is paired so there is no need to remove
3442 * its connection parameters anymore.
3443 */
3444 clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3445
3446 hci_conn_put(conn);
3447
3448 return err;
3449 }
3450
3451 void mgmt_smp_complete(struct hci_conn *conn, bool complete)
3452 {
3453 u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
3454 struct mgmt_pending_cmd *cmd;
3455
3456 cmd = find_pairing(conn);
3457 if (cmd) {
3458 cmd->cmd_complete(cmd, status);
3459 mgmt_pending_remove(cmd);
3460 }
3461 }
3462
3463 static void pairing_complete_cb(struct hci_conn *conn, u8 status)
3464 {
3465 struct mgmt_pending_cmd *cmd;
3466
3467 BT_DBG("status %u", status);
3468
3469 cmd = find_pairing(conn);
3470 if (!cmd) {
3471 BT_DBG("Unable to find a pending command");
3472 return;
3473 }
3474
3475 cmd->cmd_complete(cmd, mgmt_status(status));
3476 mgmt_pending_remove(cmd);
3477 }
3478
3479 static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
3480 {
3481 struct mgmt_pending_cmd *cmd;
3482
3483 BT_DBG("status %u", status);
3484
3485 if (!status)
3486 return;
3487
3488 cmd = find_pairing(conn);
3489 if (!cmd) {
3490 BT_DBG("Unable to find a pending command");
3491 return;
3492 }
3493
3494 cmd->cmd_complete(cmd, mgmt_status(status));
3495 mgmt_pending_remove(cmd);
3496 }
3497
3498 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3499 u16 len)
3500 {
3501 struct mgmt_cp_pair_device *cp = data;
3502 struct mgmt_rp_pair_device rp;
3503 struct mgmt_pending_cmd *cmd;
3504 u8 sec_level, auth_type;
3505 struct hci_conn *conn;
3506 int err;
3507
3508 BT_DBG("");
3509
3510 memset(&rp, 0, sizeof(rp));
3511 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3512 rp.addr.type = cp->addr.type;
3513
3514 if (!bdaddr_type_is_valid(cp->addr.type))
3515 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3516 MGMT_STATUS_INVALID_PARAMS,
3517 &rp, sizeof(rp));
3518
3519 if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY)
3520 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3521 MGMT_STATUS_INVALID_PARAMS,
3522 &rp, sizeof(rp));
3523
3524 hci_dev_lock(hdev);
3525
3526 if (!hdev_is_powered(hdev)) {
3527 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3528 MGMT_STATUS_NOT_POWERED, &rp,
3529 sizeof(rp));
3530 goto unlock;
3531 }
3532
3533 if (hci_bdaddr_is_paired(hdev, &cp->addr.bdaddr, cp->addr.type)) {
3534 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3535 MGMT_STATUS_ALREADY_PAIRED, &rp,
3536 sizeof(rp));
3537 goto unlock;
3538 }
3539
3540 sec_level = BT_SECURITY_MEDIUM;
3541 auth_type = HCI_AT_DEDICATED_BONDING;
3542
3543 if (cp->addr.type == BDADDR_BREDR) {
3544 conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
3545 auth_type);
3546 } else {
3547 u8 addr_type;
3548
3549 /* Convert from L2CAP channel address type to HCI address type
3550 */
3551 if (cp->addr.type == BDADDR_LE_PUBLIC)
3552 addr_type = ADDR_LE_DEV_PUBLIC;
3553 else
3554 addr_type = ADDR_LE_DEV_RANDOM;
3555
3556 /* When pairing a new device, it is expected to remember
3557 * this device for future connections. Adding the connection
3558 * parameter information ahead of time allows tracking
3559 * of the slave preferred values and will speed up any
3560 * further connection establishment.
3561 *
3562 * If connection parameters already exist, then they
3563 * will be kept and this function does nothing.
3564 */
3565 hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
3566
3567 conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type,
3568 sec_level, HCI_LE_CONN_TIMEOUT,
3569 HCI_ROLE_MASTER);
3570 }
3571
3572 if (IS_ERR(conn)) {
3573 int status;
3574
3575 if (PTR_ERR(conn) == -EBUSY)
3576 status = MGMT_STATUS_BUSY;
3577 else if (PTR_ERR(conn) == -EOPNOTSUPP)
3578 status = MGMT_STATUS_NOT_SUPPORTED;
3579 else if (PTR_ERR(conn) == -ECONNREFUSED)
3580 status = MGMT_STATUS_REJECTED;
3581 else
3582 status = MGMT_STATUS_CONNECT_FAILED;
3583
3584 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3585 status, &rp, sizeof(rp));
3586 goto unlock;
3587 }
3588
3589 if (conn->connect_cfm_cb) {
3590 hci_conn_drop(conn);
3591 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3592 MGMT_STATUS_BUSY, &rp, sizeof(rp));
3593 goto unlock;
3594 }
3595
3596 cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
3597 if (!cmd) {
3598 err = -ENOMEM;
3599 hci_conn_drop(conn);
3600 goto unlock;
3601 }
3602
3603 cmd->cmd_complete = pairing_complete;
3604
3605 /* For LE, just connecting isn't a proof that the pairing finished */
3606 if (cp->addr.type == BDADDR_BREDR) {
3607 conn->connect_cfm_cb = pairing_complete_cb;
3608 conn->security_cfm_cb = pairing_complete_cb;
3609 conn->disconn_cfm_cb = pairing_complete_cb;
3610 } else {
3611 conn->connect_cfm_cb = le_pairing_complete_cb;
3612 conn->security_cfm_cb = le_pairing_complete_cb;
3613 conn->disconn_cfm_cb = le_pairing_complete_cb;
3614 }
3615
3616 conn->io_capability = cp->io_cap;
3617 cmd->user_data = hci_conn_get(conn);
3618
3619 if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) &&
3620 hci_conn_security(conn, sec_level, auth_type, true)) {
3621 cmd->cmd_complete(cmd, 0);
3622 mgmt_pending_remove(cmd);
3623 }
3624
3625 err = 0;
3626
3627 unlock:
3628 hci_dev_unlock(hdev);
3629 return err;
3630 }
3631
3632 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3633 u16 len)
3634 {
3635 struct mgmt_addr_info *addr = data;
3636 struct mgmt_pending_cmd *cmd;
3637 struct hci_conn *conn;
3638 int err;
3639
3640 BT_DBG("");
3641
3642 hci_dev_lock(hdev);
3643
3644 if (!hdev_is_powered(hdev)) {
3645 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3646 MGMT_STATUS_NOT_POWERED);
3647 goto unlock;
3648 }
3649
3650 cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev);
3651 if (!cmd) {
3652 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3653 MGMT_STATUS_INVALID_PARAMS);
3654 goto unlock;
3655 }
3656
3657 conn = cmd->user_data;
3658
3659 if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
3660 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3661 MGMT_STATUS_INVALID_PARAMS);
3662 goto unlock;
3663 }
3664
3665 cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
3666 mgmt_pending_remove(cmd);
3667
3668 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
3669 addr, sizeof(*addr));
3670 unlock:
3671 hci_dev_unlock(hdev);
3672 return err;
3673 }
3674
3675 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev,
3676 struct mgmt_addr_info *addr, u16 mgmt_op,
3677 u16 hci_op, __le32 passkey)
3678 {
3679 struct mgmt_pending_cmd *cmd;
3680 struct hci_conn *conn;
3681 int err;
3682
3683 hci_dev_lock(hdev);
3684
3685 if (!hdev_is_powered(hdev)) {
3686 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3687 MGMT_STATUS_NOT_POWERED, addr,
3688 sizeof(*addr));
3689 goto done;
3690 }
3691
3692 if (addr->type == BDADDR_BREDR)
3693 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr);
3694 else
3695 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr);
3696
3697 if (!conn) {
3698 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3699 MGMT_STATUS_NOT_CONNECTED, addr,
3700 sizeof(*addr));
3701 goto done;
3702 }
3703
3704 if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) {
3705 err = smp_user_confirm_reply(conn, mgmt_op, passkey);
3706 if (!err)
3707 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3708 MGMT_STATUS_SUCCESS, addr,
3709 sizeof(*addr));
3710 else
3711 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3712 MGMT_STATUS_FAILED, addr,
3713 sizeof(*addr));
3714
3715 goto done;
3716 }
3717
3718 cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr));
3719 if (!cmd) {
3720 err = -ENOMEM;
3721 goto done;
3722 }
3723
3724 cmd->cmd_complete = addr_cmd_complete;
3725
3726 /* Continue with pairing via HCI */
3727 if (hci_op == HCI_OP_USER_PASSKEY_REPLY) {
3728 struct hci_cp_user_passkey_reply cp;
3729
3730 bacpy(&cp.bdaddr, &addr->bdaddr);
3731 cp.passkey = passkey;
3732 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp);
3733 } else
3734 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr),
3735 &addr->bdaddr);
3736
3737 if (err < 0)
3738 mgmt_pending_remove(cmd);
3739
3740 done:
3741 hci_dev_unlock(hdev);
3742 return err;
3743 }
3744
3745 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3746 void *data, u16 len)
3747 {
3748 struct mgmt_cp_pin_code_neg_reply *cp = data;
3749
3750 BT_DBG("");
3751
3752 return user_pairing_resp(sk, hdev, &cp->addr,
3753 MGMT_OP_PIN_CODE_NEG_REPLY,
3754 HCI_OP_PIN_CODE_NEG_REPLY, 0);
3755 }
3756
3757 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3758 u16 len)
3759 {
3760 struct mgmt_cp_user_confirm_reply *cp = data;
3761
3762 BT_DBG("");
3763
3764 if (len != sizeof(*cp))
3765 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY,
3766 MGMT_STATUS_INVALID_PARAMS);
3767
3768 return user_pairing_resp(sk, hdev, &cp->addr,
3769 MGMT_OP_USER_CONFIRM_REPLY,
3770 HCI_OP_USER_CONFIRM_REPLY, 0);
3771 }
3772
3773 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev,
3774 void *data, u16 len)
3775 {
3776 struct mgmt_cp_user_confirm_neg_reply *cp = data;
3777
3778 BT_DBG("");
3779
3780 return user_pairing_resp(sk, hdev, &cp->addr,
3781 MGMT_OP_USER_CONFIRM_NEG_REPLY,
3782 HCI_OP_USER_CONFIRM_NEG_REPLY, 0);
3783 }
3784
3785 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3786 u16 len)
3787 {
3788 struct mgmt_cp_user_passkey_reply *cp = data;
3789
3790 BT_DBG("");
3791
3792 return user_pairing_resp(sk, hdev, &cp->addr,
3793 MGMT_OP_USER_PASSKEY_REPLY,
3794 HCI_OP_USER_PASSKEY_REPLY, cp->passkey);
3795 }
3796
3797 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
3798 void *data, u16 len)
3799 {
3800 struct mgmt_cp_user_passkey_neg_reply *cp = data;
3801
3802 BT_DBG("");
3803
3804 return user_pairing_resp(sk, hdev, &cp->addr,
3805 MGMT_OP_USER_PASSKEY_NEG_REPLY,
3806 HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
3807 }
3808
3809 static void update_name(struct hci_request *req)
3810 {
3811 struct hci_dev *hdev = req->hdev;
3812 struct hci_cp_write_local_name cp;
3813
3814 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3815
3816 hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
3817 }
3818
3819 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode)
3820 {
3821 struct mgmt_cp_set_local_name *cp;
3822 struct mgmt_pending_cmd *cmd;
3823
3824 BT_DBG("status 0x%02x", status);
3825
3826 hci_dev_lock(hdev);
3827
3828 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
3829 if (!cmd)
3830 goto unlock;
3831
3832 cp = cmd->param;
3833
3834 if (status)
3835 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
3836 mgmt_status(status));
3837 else
3838 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3839 cp, sizeof(*cp));
3840
3841 mgmt_pending_remove(cmd);
3842
3843 unlock:
3844 hci_dev_unlock(hdev);
3845 }
3846
3847 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
3848 u16 len)
3849 {
3850 struct mgmt_cp_set_local_name *cp = data;
3851 struct mgmt_pending_cmd *cmd;
3852 struct hci_request req;
3853 int err;
3854
3855 BT_DBG("");
3856
3857 hci_dev_lock(hdev);
3858
3859 /* If the old values are the same as the new ones just return a
3860 * direct command complete event.
3861 */
3862 if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) &&
3863 !memcmp(hdev->short_name, cp->short_name,
3864 sizeof(hdev->short_name))) {
3865 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3866 data, len);
3867 goto failed;
3868 }
3869
3870 memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
3871
3872 if (!hdev_is_powered(hdev)) {
3873 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3874
3875 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3876 data, len);
3877 if (err < 0)
3878 goto failed;
3879
3880 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev,
3881 data, len, sk);
3882
3883 goto failed;
3884 }
3885
3886 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len);
3887 if (!cmd) {
3888 err = -ENOMEM;
3889 goto failed;
3890 }
3891
3892 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3893
3894 hci_req_init(&req, hdev);
3895
3896 if (lmp_bredr_capable(hdev)) {
3897 update_name(&req);
3898 update_eir(&req);
3899 }
3900
3901 /* The name is stored in the scan response data and so
3902 * no need to udpate the advertising data here.
3903 */
3904 if (lmp_le_capable(hdev))
3905 update_scan_rsp_data(&req);
3906
3907 err = hci_req_run(&req, set_name_complete);
3908 if (err < 0)
3909 mgmt_pending_remove(cmd);
3910
3911 failed:
3912 hci_dev_unlock(hdev);
3913 return err;
3914 }
3915
3916 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
3917 u16 opcode, struct sk_buff *skb)
3918 {
3919 struct mgmt_rp_read_local_oob_data mgmt_rp;
3920 size_t rp_size = sizeof(mgmt_rp);
3921 struct mgmt_pending_cmd *cmd;
3922
3923 BT_DBG("%s status %u", hdev->name, status);
3924
3925 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev);
3926 if (!cmd)
3927 return;
3928
3929 if (status || !skb) {
3930 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3931 status ? mgmt_status(status) : MGMT_STATUS_FAILED);
3932 goto remove;
3933 }
3934
3935 memset(&mgmt_rp, 0, sizeof(mgmt_rp));
3936
3937 if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
3938 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
3939
3940 if (skb->len < sizeof(*rp)) {
3941 mgmt_cmd_status(cmd->sk, hdev->id,
3942 MGMT_OP_READ_LOCAL_OOB_DATA,
3943 MGMT_STATUS_FAILED);
3944 goto remove;
3945 }
3946
3947 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash));
3948 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand));
3949
3950 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256);
3951 } else {
3952 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
3953
3954 if (skb->len < sizeof(*rp)) {
3955 mgmt_cmd_status(cmd->sk, hdev->id,
3956 MGMT_OP_READ_LOCAL_OOB_DATA,
3957 MGMT_STATUS_FAILED);
3958 goto remove;
3959 }
3960
3961 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192));
3962 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192));
3963
3964 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256));
3965 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256));
3966 }
3967
3968 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3969 MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size);
3970
3971 remove:
3972 mgmt_pending_remove(cmd);
3973 }
3974
3975 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
3976 void *data, u16 data_len)
3977 {
3978 struct mgmt_pending_cmd *cmd;
3979 struct hci_request req;
3980 int err;
3981
3982 BT_DBG("%s", hdev->name);
3983
3984 hci_dev_lock(hdev);
3985
3986 if (!hdev_is_powered(hdev)) {
3987 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3988 MGMT_STATUS_NOT_POWERED);
3989 goto unlock;
3990 }
3991
3992 if (!lmp_ssp_capable(hdev)) {
3993 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3994 MGMT_STATUS_NOT_SUPPORTED);
3995 goto unlock;
3996 }
3997
3998 if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) {
3999 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
4000 MGMT_STATUS_BUSY);
4001 goto unlock;
4002 }
4003
4004 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0);
4005 if (!cmd) {
4006 err = -ENOMEM;
4007 goto unlock;
4008 }
4009
4010 hci_req_init(&req, hdev);
4011
4012 if (bredr_sc_enabled(hdev))
4013 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
4014 else
4015 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
4016
4017 err = hci_req_run_skb(&req, read_local_oob_data_complete);
4018 if (err < 0)
4019 mgmt_pending_remove(cmd);
4020
4021 unlock:
4022 hci_dev_unlock(hdev);
4023 return err;
4024 }
4025
4026 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4027 void *data, u16 len)
4028 {
4029 struct mgmt_addr_info *addr = data;
4030 int err;
4031
4032 BT_DBG("%s ", hdev->name);
4033
4034 if (!bdaddr_type_is_valid(addr->type))
4035 return mgmt_cmd_complete(sk, hdev->id,
4036 MGMT_OP_ADD_REMOTE_OOB_DATA,
4037 MGMT_STATUS_INVALID_PARAMS,
4038 addr, sizeof(*addr));
4039
4040 hci_dev_lock(hdev);
4041
4042 if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
4043 struct mgmt_cp_add_remote_oob_data *cp = data;
4044 u8 status;
4045
4046 if (cp->addr.type != BDADDR_BREDR) {
4047 err = mgmt_cmd_complete(sk, hdev->id,
4048 MGMT_OP_ADD_REMOTE_OOB_DATA,
4049 MGMT_STATUS_INVALID_PARAMS,
4050 &cp->addr, sizeof(cp->addr));
4051 goto unlock;
4052 }
4053
4054 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4055 cp->addr.type, cp->hash,
4056 cp->rand, NULL, NULL);
4057 if (err < 0)
4058 status = MGMT_STATUS_FAILED;
4059 else
4060 status = MGMT_STATUS_SUCCESS;
4061
4062 err = mgmt_cmd_complete(sk, hdev->id,
4063 MGMT_OP_ADD_REMOTE_OOB_DATA, status,
4064 &cp->addr, sizeof(cp->addr));
4065 } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
4066 struct mgmt_cp_add_remote_oob_ext_data *cp = data;
4067 u8 *rand192, *hash192, *rand256, *hash256;
4068 u8 status;
4069
4070 if (bdaddr_type_is_le(cp->addr.type)) {
4071 /* Enforce zero-valued 192-bit parameters as
4072 * long as legacy SMP OOB isn't implemented.
4073 */
4074 if (memcmp(cp->rand192, ZERO_KEY, 16) ||
4075 memcmp(cp->hash192, ZERO_KEY, 16)) {
4076 err = mgmt_cmd_complete(sk, hdev->id,
4077 MGMT_OP_ADD_REMOTE_OOB_DATA,
4078 MGMT_STATUS_INVALID_PARAMS,
4079 addr, sizeof(*addr));
4080 goto unlock;
4081 }
4082
4083 rand192 = NULL;
4084 hash192 = NULL;
4085 } else {
4086 /* In case one of the P-192 values is set to zero,
4087 * then just disable OOB data for P-192.
4088 */
4089 if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
4090 !memcmp(cp->hash192, ZERO_KEY, 16)) {
4091 rand192 = NULL;
4092 hash192 = NULL;
4093 } else {
4094 rand192 = cp->rand192;
4095 hash192 = cp->hash192;
4096 }
4097 }
4098
4099 /* In case one of the P-256 values is set to zero, then just
4100 * disable OOB data for P-256.
4101 */
4102 if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
4103 !memcmp(cp->hash256, ZERO_KEY, 16)) {
4104 rand256 = NULL;
4105 hash256 = NULL;
4106 } else {
4107 rand256 = cp->rand256;
4108 hash256 = cp->hash256;
4109 }
4110
4111 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4112 cp->addr.type, hash192, rand192,
4113 hash256, rand256);
4114 if (err < 0)
4115 status = MGMT_STATUS_FAILED;
4116 else
4117 status = MGMT_STATUS_SUCCESS;
4118
4119 err = mgmt_cmd_complete(sk, hdev->id,
4120 MGMT_OP_ADD_REMOTE_OOB_DATA,
4121 status, &cp->addr, sizeof(cp->addr));
4122 } else {
4123 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
4124 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
4125 MGMT_STATUS_INVALID_PARAMS);
4126 }
4127
4128 unlock:
4129 hci_dev_unlock(hdev);
4130 return err;
4131 }
4132
4133 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4134 void *data, u16 len)
4135 {
4136 struct mgmt_cp_remove_remote_oob_data *cp = data;
4137 u8 status;
4138 int err;
4139
4140 BT_DBG("%s", hdev->name);
4141
4142 if (cp->addr.type != BDADDR_BREDR)
4143 return mgmt_cmd_complete(sk, hdev->id,
4144 MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4145 MGMT_STATUS_INVALID_PARAMS,
4146 &cp->addr, sizeof(cp->addr));
4147
4148 hci_dev_lock(hdev);
4149
4150 if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
4151 hci_remote_oob_data_clear(hdev);
4152 status = MGMT_STATUS_SUCCESS;
4153 goto done;
4154 }
4155
4156 err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type);
4157 if (err < 0)
4158 status = MGMT_STATUS_INVALID_PARAMS;
4159 else
4160 status = MGMT_STATUS_SUCCESS;
4161
4162 done:
4163 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4164 status, &cp->addr, sizeof(cp->addr));
4165
4166 hci_dev_unlock(hdev);
4167 return err;
4168 }
4169
4170 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status)
4171 {
4172 struct hci_dev *hdev = req->hdev;
4173 struct hci_cp_inquiry cp;
4174 /* General inquiry access code (GIAC) */
4175 u8 lap[3] = { 0x33, 0x8b, 0x9e };
4176
4177 *status = mgmt_bredr_support(hdev);
4178 if (*status)
4179 return false;
4180
4181 if (hci_dev_test_flag(hdev, HCI_INQUIRY)) {
4182 *status = MGMT_STATUS_BUSY;
4183 return false;
4184 }
4185
4186 hci_inquiry_cache_flush(hdev);
4187
4188 memset(&cp, 0, sizeof(cp));
4189 memcpy(&cp.lap, lap, sizeof(cp.lap));
4190 cp.length = DISCOV_BREDR_INQUIRY_LEN;
4191
4192 hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
4193
4194 return true;
4195 }
4196
4197 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status)
4198 {
4199 struct hci_dev *hdev = req->hdev;
4200 struct hci_cp_le_set_scan_param param_cp;
4201 struct hci_cp_le_set_scan_enable enable_cp;
4202 u8 own_addr_type;
4203 int err;
4204
4205 *status = mgmt_le_support(hdev);
4206 if (*status)
4207 return false;
4208
4209 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) {
4210 /* Don't let discovery abort an outgoing connection attempt
4211 * that's using directed advertising.
4212 */
4213 if (hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) {
4214 *status = MGMT_STATUS_REJECTED;
4215 return false;
4216 }
4217
4218 cancel_adv_timeout(hdev);
4219 disable_advertising(req);
4220 }
4221
4222 /* If controller is scanning, it means the background scanning is
4223 * running. Thus, we should temporarily stop it in order to set the
4224 * discovery scanning parameters.
4225 */
4226 if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
4227 hci_req_add_le_scan_disable(req);
4228
4229 /* All active scans will be done with either a resolvable private
4230 * address (when privacy feature has been enabled) or non-resolvable
4231 * private address.
4232 */
4233 err = hci_update_random_address(req, true, &own_addr_type);
4234 if (err < 0) {
4235 *status = MGMT_STATUS_FAILED;
4236 return false;
4237 }
4238
4239 memset(&param_cp, 0, sizeof(param_cp));
4240 param_cp.type = LE_SCAN_ACTIVE;
4241 param_cp.interval = cpu_to_le16(interval);
4242 param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
4243 param_cp.own_address_type = own_addr_type;
4244
4245 hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
4246 &param_cp);
4247
4248 memset(&enable_cp, 0, sizeof(enable_cp));
4249 enable_cp.enable = LE_SCAN_ENABLE;
4250 enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
4251
4252 hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
4253 &enable_cp);
4254
4255 return true;
4256 }
4257
4258 static bool trigger_discovery(struct hci_request *req, u8 *status)
4259 {
4260 struct hci_dev *hdev = req->hdev;
4261
4262 switch (hdev->discovery.type) {
4263 case DISCOV_TYPE_BREDR:
4264 if (!trigger_bredr_inquiry(req, status))
4265 return false;
4266 break;
4267
4268 case DISCOV_TYPE_INTERLEAVED:
4269 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
4270 &hdev->quirks)) {
4271 /* During simultaneous discovery, we double LE scan
4272 * interval. We must leave some time for the controller
4273 * to do BR/EDR inquiry.
4274 */
4275 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2,
4276 status))
4277 return false;
4278
4279 if (!trigger_bredr_inquiry(req, status))
4280 return false;
4281
4282 return true;
4283 }
4284
4285 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4286 *status = MGMT_STATUS_NOT_SUPPORTED;
4287 return false;
4288 }
4289 /* fall through */
4290
4291 case DISCOV_TYPE_LE:
4292 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status))
4293 return false;
4294 break;
4295
4296 default:
4297 *status = MGMT_STATUS_INVALID_PARAMS;
4298 return false;
4299 }
4300
4301 return true;
4302 }
4303
4304 static void start_discovery_complete(struct hci_dev *hdev, u8 status,
4305 u16 opcode)
4306 {
4307 struct mgmt_pending_cmd *cmd;
4308 unsigned long timeout;
4309
4310 BT_DBG("status %d", status);
4311
4312 hci_dev_lock(hdev);
4313
4314 cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev);
4315 if (!cmd)
4316 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev);
4317
4318 if (cmd) {
4319 cmd->cmd_complete(cmd, mgmt_status(status));
4320 mgmt_pending_remove(cmd);
4321 }
4322
4323 if (status) {
4324 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4325 goto unlock;
4326 }
4327
4328 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
4329
4330 /* If the scan involves LE scan, pick proper timeout to schedule
4331 * hdev->le_scan_disable that will stop it.
4332 */
4333 switch (hdev->discovery.type) {
4334 case DISCOV_TYPE_LE:
4335 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4336 break;
4337 case DISCOV_TYPE_INTERLEAVED:
4338 /* When running simultaneous discovery, the LE scanning time
4339 * should occupy the whole discovery time sine BR/EDR inquiry
4340 * and LE scanning are scheduled by the controller.
4341 *
4342 * For interleaving discovery in comparison, BR/EDR inquiry
4343 * and LE scanning are done sequentially with separate
4344 * timeouts.
4345 */
4346 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
4347 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4348 else
4349 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
4350 break;
4351 case DISCOV_TYPE_BREDR:
4352 timeout = 0;
4353 break;
4354 default:
4355 BT_ERR("Invalid discovery type %d", hdev->discovery.type);
4356 timeout = 0;
4357 break;
4358 }
4359
4360 if (timeout) {
4361 /* When service discovery is used and the controller has
4362 * a strict duplicate filter, it is important to remember
4363 * the start and duration of the scan. This is required
4364 * for restarting scanning during the discovery phase.
4365 */
4366 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
4367 &hdev->quirks) &&
4368 hdev->discovery.result_filtering) {
4369 hdev->discovery.scan_start = jiffies;
4370 hdev->discovery.scan_duration = timeout;
4371 }
4372
4373 queue_delayed_work(hdev->workqueue,
4374 &hdev->le_scan_disable, timeout);
4375 }
4376
4377 unlock:
4378 hci_dev_unlock(hdev);
4379 }
4380
4381 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
4382 void *data, u16 len)
4383 {
4384 struct mgmt_cp_start_discovery *cp = data;
4385 struct mgmt_pending_cmd *cmd;
4386 struct hci_request req;
4387 u8 status;
4388 int err;
4389
4390 BT_DBG("%s", hdev->name);
4391
4392 hci_dev_lock(hdev);
4393
4394 if (!hdev_is_powered(hdev)) {
4395 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4396 MGMT_STATUS_NOT_POWERED,
4397 &cp->type, sizeof(cp->type));
4398 goto failed;
4399 }
4400
4401 if (hdev->discovery.state != DISCOVERY_STOPPED ||
4402 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4403 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4404 MGMT_STATUS_BUSY, &cp->type,
4405 sizeof(cp->type));
4406 goto failed;
4407 }
4408
4409 cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len);
4410 if (!cmd) {
4411 err = -ENOMEM;
4412 goto failed;
4413 }
4414
4415 cmd->cmd_complete = generic_cmd_complete;
4416
4417 /* Clear the discovery filter first to free any previously
4418 * allocated memory for the UUID list.
4419 */
4420 hci_discovery_filter_clear(hdev);
4421
4422 hdev->discovery.type = cp->type;
4423 hdev->discovery.report_invalid_rssi = false;
4424
4425 hci_req_init(&req, hdev);
4426
4427 if (!trigger_discovery(&req, &status)) {
4428 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4429 status, &cp->type, sizeof(cp->type));
4430 mgmt_pending_remove(cmd);
4431 goto failed;
4432 }
4433
4434 err = hci_req_run(&req, start_discovery_complete);
4435 if (err < 0) {
4436 mgmt_pending_remove(cmd);
4437 goto failed;
4438 }
4439
4440 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4441
4442 failed:
4443 hci_dev_unlock(hdev);
4444 return err;
4445 }
4446
4447 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd,
4448 u8 status)
4449 {
4450 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
4451 cmd->param, 1);
4452 }
4453
4454 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev,
4455 void *data, u16 len)
4456 {
4457 struct mgmt_cp_start_service_discovery *cp = data;
4458 struct mgmt_pending_cmd *cmd;
4459 struct hci_request req;
4460 const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16);
4461 u16 uuid_count, expected_len;
4462 u8 status;
4463 int err;
4464
4465 BT_DBG("%s", hdev->name);
4466
4467 hci_dev_lock(hdev);
4468
4469 if (!hdev_is_powered(hdev)) {
4470 err = mgmt_cmd_complete(sk, hdev->id,
4471 MGMT_OP_START_SERVICE_DISCOVERY,
4472 MGMT_STATUS_NOT_POWERED,
4473 &cp->type, sizeof(cp->type));
4474 goto failed;
4475 }
4476
4477 if (hdev->discovery.state != DISCOVERY_STOPPED ||
4478 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4479 err = mgmt_cmd_complete(sk, hdev->id,
4480 MGMT_OP_START_SERVICE_DISCOVERY,
4481 MGMT_STATUS_BUSY, &cp->type,
4482 sizeof(cp->type));
4483 goto failed;
4484 }
4485
4486 uuid_count = __le16_to_cpu(cp->uuid_count);
4487 if (uuid_count > max_uuid_count) {
4488 BT_ERR("service_discovery: too big uuid_count value %u",
4489 uuid_count);
4490 err = mgmt_cmd_complete(sk, hdev->id,
4491 MGMT_OP_START_SERVICE_DISCOVERY,
4492 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4493 sizeof(cp->type));
4494 goto failed;
4495 }
4496
4497 expected_len = sizeof(*cp) + uuid_count * 16;
4498 if (expected_len != len) {
4499 BT_ERR("service_discovery: expected %u bytes, got %u bytes",
4500 expected_len, len);
4501 err = mgmt_cmd_complete(sk, hdev->id,
4502 MGMT_OP_START_SERVICE_DISCOVERY,
4503 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4504 sizeof(cp->type));
4505 goto failed;
4506 }
4507
4508 cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY,
4509 hdev, data, len);
4510 if (!cmd) {
4511 err = -ENOMEM;
4512 goto failed;
4513 }
4514
4515 cmd->cmd_complete = service_discovery_cmd_complete;
4516
4517 /* Clear the discovery filter first to free any previously
4518 * allocated memory for the UUID list.
4519 */
4520 hci_discovery_filter_clear(hdev);
4521
4522 hdev->discovery.result_filtering = true;
4523 hdev->discovery.type = cp->type;
4524 hdev->discovery.rssi = cp->rssi;
4525 hdev->discovery.uuid_count = uuid_count;
4526
4527 if (uuid_count > 0) {
4528 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16,
4529 GFP_KERNEL);
4530 if (!hdev->discovery.uuids) {
4531 err = mgmt_cmd_complete(sk, hdev->id,
4532 MGMT_OP_START_SERVICE_DISCOVERY,
4533 MGMT_STATUS_FAILED,
4534 &cp->type, sizeof(cp->type));
4535 mgmt_pending_remove(cmd);
4536 goto failed;
4537 }
4538 }
4539
4540 hci_req_init(&req, hdev);
4541
4542 if (!trigger_discovery(&req, &status)) {
4543 err = mgmt_cmd_complete(sk, hdev->id,
4544 MGMT_OP_START_SERVICE_DISCOVERY,
4545 status, &cp->type, sizeof(cp->type));
4546 mgmt_pending_remove(cmd);
4547 goto failed;
4548 }
4549
4550 err = hci_req_run(&req, start_discovery_complete);
4551 if (err < 0) {
4552 mgmt_pending_remove(cmd);
4553 goto failed;
4554 }
4555
4556 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4557
4558 failed:
4559 hci_dev_unlock(hdev);
4560 return err;
4561 }
4562
4563 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4564 {
4565 struct mgmt_pending_cmd *cmd;
4566
4567 BT_DBG("status %d", status);
4568
4569 hci_dev_lock(hdev);
4570
4571 cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
4572 if (cmd) {
4573 cmd->cmd_complete(cmd, mgmt_status(status));
4574 mgmt_pending_remove(cmd);
4575 }
4576
4577 if (!status)
4578 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4579
4580 hci_dev_unlock(hdev);
4581 }
4582
4583 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
4584 u16 len)
4585 {
4586 struct mgmt_cp_stop_discovery *mgmt_cp = data;
4587 struct mgmt_pending_cmd *cmd;
4588 struct hci_request req;
4589 int err;
4590
4591 BT_DBG("%s", hdev->name);
4592
4593 hci_dev_lock(hdev);
4594
4595 if (!hci_discovery_active(hdev)) {
4596 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4597 MGMT_STATUS_REJECTED, &mgmt_cp->type,
4598 sizeof(mgmt_cp->type));
4599 goto unlock;
4600 }
4601
4602 if (hdev->discovery.type != mgmt_cp->type) {
4603 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4604 MGMT_STATUS_INVALID_PARAMS,
4605 &mgmt_cp->type, sizeof(mgmt_cp->type));
4606 goto unlock;
4607 }
4608
4609 cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len);
4610 if (!cmd) {
4611 err = -ENOMEM;
4612 goto unlock;
4613 }
4614
4615 cmd->cmd_complete = generic_cmd_complete;
4616
4617 hci_req_init(&req, hdev);
4618
4619 hci_stop_discovery(&req);
4620
4621 err = hci_req_run(&req, stop_discovery_complete);
4622 if (!err) {
4623 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
4624 goto unlock;
4625 }
4626
4627 mgmt_pending_remove(cmd);
4628
4629 /* If no HCI commands were sent we're done */
4630 if (err == -ENODATA) {
4631 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0,
4632 &mgmt_cp->type, sizeof(mgmt_cp->type));
4633 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4634 }
4635
4636 unlock:
4637 hci_dev_unlock(hdev);
4638 return err;
4639 }
4640
4641 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
4642 u16 len)
4643 {
4644 struct mgmt_cp_confirm_name *cp = data;
4645 struct inquiry_entry *e;
4646 int err;
4647
4648 BT_DBG("%s", hdev->name);
4649
4650 hci_dev_lock(hdev);
4651
4652 if (!hci_discovery_active(hdev)) {
4653 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4654 MGMT_STATUS_FAILED, &cp->addr,
4655 sizeof(cp->addr));
4656 goto failed;
4657 }
4658
4659 e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
4660 if (!e) {
4661 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4662 MGMT_STATUS_INVALID_PARAMS, &cp->addr,
4663 sizeof(cp->addr));
4664 goto failed;
4665 }
4666
4667 if (cp->name_known) {
4668 e->name_state = NAME_KNOWN;
4669 list_del(&e->list);
4670 } else {
4671 e->name_state = NAME_NEEDED;
4672 hci_inquiry_cache_update_resolve(hdev, e);
4673 }
4674
4675 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0,
4676 &cp->addr, sizeof(cp->addr));
4677
4678 failed:
4679 hci_dev_unlock(hdev);
4680 return err;
4681 }
4682
4683 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
4684 u16 len)
4685 {
4686 struct mgmt_cp_block_device *cp = data;
4687 u8 status;
4688 int err;
4689
4690 BT_DBG("%s", hdev->name);
4691
4692 if (!bdaddr_type_is_valid(cp->addr.type))
4693 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
4694 MGMT_STATUS_INVALID_PARAMS,
4695 &cp->addr, sizeof(cp->addr));
4696
4697 hci_dev_lock(hdev);
4698
4699 err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr,
4700 cp->addr.type);
4701 if (err < 0) {
4702 status = MGMT_STATUS_FAILED;
4703 goto done;
4704 }
4705
4706 mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4707 sk);
4708 status = MGMT_STATUS_SUCCESS;
4709
4710 done:
4711 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status,
4712 &cp->addr, sizeof(cp->addr));
4713
4714 hci_dev_unlock(hdev);
4715
4716 return err;
4717 }
4718
4719 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
4720 u16 len)
4721 {
4722 struct mgmt_cp_unblock_device *cp = data;
4723 u8 status;
4724 int err;
4725
4726 BT_DBG("%s", hdev->name);
4727
4728 if (!bdaddr_type_is_valid(cp->addr.type))
4729 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
4730 MGMT_STATUS_INVALID_PARAMS,
4731 &cp->addr, sizeof(cp->addr));
4732
4733 hci_dev_lock(hdev);
4734
4735 err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr,
4736 cp->addr.type);
4737 if (err < 0) {
4738 status = MGMT_STATUS_INVALID_PARAMS;
4739 goto done;
4740 }
4741
4742 mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4743 sk);
4744 status = MGMT_STATUS_SUCCESS;
4745
4746 done:
4747 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status,
4748 &cp->addr, sizeof(cp->addr));
4749
4750 hci_dev_unlock(hdev);
4751
4752 return err;
4753 }
4754
4755 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data,
4756 u16 len)
4757 {
4758 struct mgmt_cp_set_device_id *cp = data;
4759 struct hci_request req;
4760 int err;
4761 __u16 source;
4762
4763 BT_DBG("%s", hdev->name);
4764
4765 source = __le16_to_cpu(cp->source);
4766
4767 if (source > 0x0002)
4768 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID,
4769 MGMT_STATUS_INVALID_PARAMS);
4770
4771 hci_dev_lock(hdev);
4772
4773 hdev->devid_source = source;
4774 hdev->devid_vendor = __le16_to_cpu(cp->vendor);
4775 hdev->devid_product = __le16_to_cpu(cp->product);
4776 hdev->devid_version = __le16_to_cpu(cp->version);
4777
4778 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0,
4779 NULL, 0);
4780
4781 hci_req_init(&req, hdev);
4782 update_eir(&req);
4783 hci_req_run(&req, NULL);
4784
4785 hci_dev_unlock(hdev);
4786
4787 return err;
4788 }
4789
4790 static void enable_advertising_instance(struct hci_dev *hdev, u8 status,
4791 u16 opcode)
4792 {
4793 BT_DBG("status %d", status);
4794 }
4795
4796 static void set_advertising_complete(struct hci_dev *hdev, u8 status,
4797 u16 opcode)
4798 {
4799 struct cmd_lookup match = { NULL, hdev };
4800 struct hci_request req;
4801 u8 instance;
4802 struct adv_info *adv_instance;
4803 int err;
4804
4805 hci_dev_lock(hdev);
4806
4807 if (status) {
4808 u8 mgmt_err = mgmt_status(status);
4809
4810 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev,
4811 cmd_status_rsp, &mgmt_err);
4812 goto unlock;
4813 }
4814
4815 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
4816 hci_dev_set_flag(hdev, HCI_ADVERTISING);
4817 else
4818 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
4819
4820 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp,
4821 &match);
4822
4823 new_settings(hdev, match.sk);
4824
4825 if (match.sk)
4826 sock_put(match.sk);
4827
4828 /* If "Set Advertising" was just disabled and instance advertising was
4829 * set up earlier, then re-enable multi-instance advertising.
4830 */
4831 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
4832 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) ||
4833 list_empty(&hdev->adv_instances))
4834 goto unlock;
4835
4836 instance = hdev->cur_adv_instance;
4837 if (!instance) {
4838 adv_instance = list_first_entry_or_null(&hdev->adv_instances,
4839 struct adv_info, list);
4840 if (!adv_instance)
4841 goto unlock;
4842
4843 instance = adv_instance->instance;
4844 }
4845
4846 hci_req_init(&req, hdev);
4847
4848 err = schedule_adv_instance(&req, instance, true);
4849
4850 if (!err)
4851 err = hci_req_run(&req, enable_advertising_instance);
4852
4853 if (err)
4854 BT_ERR("Failed to re-configure advertising");
4855
4856 unlock:
4857 hci_dev_unlock(hdev);
4858 }
4859
4860 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
4861 u16 len)
4862 {
4863 struct mgmt_mode *cp = data;
4864 struct mgmt_pending_cmd *cmd;
4865 struct hci_request req;
4866 u8 val, status;
4867 int err;
4868
4869 BT_DBG("request for %s", hdev->name);
4870
4871 status = mgmt_le_support(hdev);
4872 if (status)
4873 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4874 status);
4875
4876 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4877 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4878 MGMT_STATUS_INVALID_PARAMS);
4879
4880 hci_dev_lock(hdev);
4881
4882 val = !!cp->val;
4883
4884 /* The following conditions are ones which mean that we should
4885 * not do any HCI communication but directly send a mgmt
4886 * response to user space (after toggling the flag if
4887 * necessary).
4888 */
4889 if (!hdev_is_powered(hdev) ||
4890 (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
4891 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) ||
4892 hci_conn_num(hdev, LE_LINK) > 0 ||
4893 (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
4894 hdev->le_scan_type == LE_SCAN_ACTIVE)) {
4895 bool changed;
4896
4897 if (cp->val) {
4898 changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING);
4899 if (cp->val == 0x02)
4900 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4901 else
4902 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4903 } else {
4904 changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING);
4905 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4906 }
4907
4908 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev);
4909 if (err < 0)
4910 goto unlock;
4911
4912 if (changed)
4913 err = new_settings(hdev, sk);
4914
4915 goto unlock;
4916 }
4917
4918 if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) ||
4919 pending_find(MGMT_OP_SET_LE, hdev)) {
4920 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4921 MGMT_STATUS_BUSY);
4922 goto unlock;
4923 }
4924
4925 cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len);
4926 if (!cmd) {
4927 err = -ENOMEM;
4928 goto unlock;
4929 }
4930
4931 hci_req_init(&req, hdev);
4932
4933 if (cp->val == 0x02)
4934 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4935 else
4936 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4937
4938 cancel_adv_timeout(hdev);
4939
4940 if (val) {
4941 /* Switch to instance "0" for the Set Advertising setting.
4942 * We cannot use update_[adv|scan_rsp]_data() here as the
4943 * HCI_ADVERTISING flag is not yet set.
4944 */
4945 update_inst_adv_data(&req, 0x00);
4946 update_inst_scan_rsp_data(&req, 0x00);
4947 enable_advertising(&req);
4948 } else {
4949 disable_advertising(&req);
4950 }
4951
4952 err = hci_req_run(&req, set_advertising_complete);
4953 if (err < 0)
4954 mgmt_pending_remove(cmd);
4955
4956 unlock:
4957 hci_dev_unlock(hdev);
4958 return err;
4959 }
4960
4961 static int set_static_address(struct sock *sk, struct hci_dev *hdev,
4962 void *data, u16 len)
4963 {
4964 struct mgmt_cp_set_static_address *cp = data;
4965 int err;
4966
4967 BT_DBG("%s", hdev->name);
4968
4969 if (!lmp_le_capable(hdev))
4970 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4971 MGMT_STATUS_NOT_SUPPORTED);
4972
4973 if (hdev_is_powered(hdev))
4974 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4975 MGMT_STATUS_REJECTED);
4976
4977 if (bacmp(&cp->bdaddr, BDADDR_ANY)) {
4978 if (!bacmp(&cp->bdaddr, BDADDR_NONE))
4979 return mgmt_cmd_status(sk, hdev->id,
4980 MGMT_OP_SET_STATIC_ADDRESS,
4981 MGMT_STATUS_INVALID_PARAMS);
4982
4983 /* Two most significant bits shall be set */
4984 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0)
4985 return mgmt_cmd_status(sk, hdev->id,
4986 MGMT_OP_SET_STATIC_ADDRESS,
4987 MGMT_STATUS_INVALID_PARAMS);
4988 }
4989
4990 hci_dev_lock(hdev);
4991
4992 bacpy(&hdev->static_addr, &cp->bdaddr);
4993
4994 err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev);
4995 if (err < 0)
4996 goto unlock;
4997
4998 err = new_settings(hdev, sk);
4999
5000 unlock:
5001 hci_dev_unlock(hdev);
5002 return err;
5003 }
5004
5005 static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
5006 void *data, u16 len)
5007 {
5008 struct mgmt_cp_set_scan_params *cp = data;
5009 __u16 interval, window;
5010 int err;
5011
5012 BT_DBG("%s", hdev->name);
5013
5014 if (!lmp_le_capable(hdev))
5015 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5016 MGMT_STATUS_NOT_SUPPORTED);
5017
5018 interval = __le16_to_cpu(cp->interval);
5019
5020 if (interval < 0x0004 || interval > 0x4000)
5021 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5022 MGMT_STATUS_INVALID_PARAMS);
5023
5024 window = __le16_to_cpu(cp->window);
5025
5026 if (window < 0x0004 || window > 0x4000)
5027 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5028 MGMT_STATUS_INVALID_PARAMS);
5029
5030 if (window > interval)
5031 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5032 MGMT_STATUS_INVALID_PARAMS);
5033
5034 hci_dev_lock(hdev);
5035
5036 hdev->le_scan_interval = interval;
5037 hdev->le_scan_window = window;
5038
5039 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0,
5040 NULL, 0);
5041
5042 /* If background scan is running, restart it so new parameters are
5043 * loaded.
5044 */
5045 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
5046 hdev->discovery.state == DISCOVERY_STOPPED) {
5047 struct hci_request req;
5048
5049 hci_req_init(&req, hdev);
5050
5051 hci_req_add_le_scan_disable(&req);
5052 hci_req_add_le_passive_scan(&req);
5053
5054 hci_req_run(&req, NULL);
5055 }
5056
5057 hci_dev_unlock(hdev);
5058
5059 return err;
5060 }
5061
5062 static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
5063 u16 opcode)
5064 {
5065 struct mgmt_pending_cmd *cmd;
5066
5067 BT_DBG("status 0x%02x", status);
5068
5069 hci_dev_lock(hdev);
5070
5071 cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5072 if (!cmd)
5073 goto unlock;
5074
5075 if (status) {
5076 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5077 mgmt_status(status));
5078 } else {
5079 struct mgmt_mode *cp = cmd->param;
5080
5081 if (cp->val)
5082 hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE);
5083 else
5084 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5085
5086 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5087 new_settings(hdev, cmd->sk);
5088 }
5089
5090 mgmt_pending_remove(cmd);
5091
5092 unlock:
5093 hci_dev_unlock(hdev);
5094 }
5095
5096 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
5097 void *data, u16 len)
5098 {
5099 struct mgmt_mode *cp = data;
5100 struct mgmt_pending_cmd *cmd;
5101 struct hci_request req;
5102 int err;
5103
5104 BT_DBG("%s", hdev->name);
5105
5106 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
5107 hdev->hci_ver < BLUETOOTH_VER_1_2)
5108 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5109 MGMT_STATUS_NOT_SUPPORTED);
5110
5111 if (cp->val != 0x00 && cp->val != 0x01)
5112 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5113 MGMT_STATUS_INVALID_PARAMS);
5114
5115 hci_dev_lock(hdev);
5116
5117 if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
5118 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5119 MGMT_STATUS_BUSY);
5120 goto unlock;
5121 }
5122
5123 if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) {
5124 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5125 hdev);
5126 goto unlock;
5127 }
5128
5129 if (!hdev_is_powered(hdev)) {
5130 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE);
5131 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5132 hdev);
5133 new_settings(hdev, sk);
5134 goto unlock;
5135 }
5136
5137 cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
5138 data, len);
5139 if (!cmd) {
5140 err = -ENOMEM;
5141 goto unlock;
5142 }
5143
5144 hci_req_init(&req, hdev);
5145
5146 write_fast_connectable(&req, cp->val);
5147
5148 err = hci_req_run(&req, fast_connectable_complete);
5149 if (err < 0) {
5150 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5151 MGMT_STATUS_FAILED);
5152 mgmt_pending_remove(cmd);
5153 }
5154
5155 unlock:
5156 hci_dev_unlock(hdev);
5157
5158 return err;
5159 }
5160
5161 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5162 {
5163 struct mgmt_pending_cmd *cmd;
5164
5165 BT_DBG("status 0x%02x", status);
5166
5167 hci_dev_lock(hdev);
5168
5169 cmd = pending_find(MGMT_OP_SET_BREDR, hdev);
5170 if (!cmd)
5171 goto unlock;
5172
5173 if (status) {
5174 u8 mgmt_err = mgmt_status(status);
5175
5176 /* We need to restore the flag if related HCI commands
5177 * failed.
5178 */
5179 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
5180
5181 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
5182 } else {
5183 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev);
5184 new_settings(hdev, cmd->sk);
5185 }
5186
5187 mgmt_pending_remove(cmd);
5188
5189 unlock:
5190 hci_dev_unlock(hdev);
5191 }
5192
5193 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
5194 {
5195 struct mgmt_mode *cp = data;
5196 struct mgmt_pending_cmd *cmd;
5197 struct hci_request req;
5198 int err;
5199
5200 BT_DBG("request for %s", hdev->name);
5201
5202 if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev))
5203 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5204 MGMT_STATUS_NOT_SUPPORTED);
5205
5206 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5207 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5208 MGMT_STATUS_REJECTED);
5209
5210 if (cp->val != 0x00 && cp->val != 0x01)
5211 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5212 MGMT_STATUS_INVALID_PARAMS);
5213
5214 hci_dev_lock(hdev);
5215
5216 if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5217 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5218 goto unlock;
5219 }
5220
5221 if (!hdev_is_powered(hdev)) {
5222 if (!cp->val) {
5223 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
5224 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
5225 hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
5226 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5227 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
5228 }
5229
5230 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED);
5231
5232 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5233 if (err < 0)
5234 goto unlock;
5235
5236 err = new_settings(hdev, sk);
5237 goto unlock;
5238 }
5239
5240 /* Reject disabling when powered on */
5241 if (!cp->val) {
5242 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5243 MGMT_STATUS_REJECTED);
5244 goto unlock;
5245 } else {
5246 /* When configuring a dual-mode controller to operate
5247 * with LE only and using a static address, then switching
5248 * BR/EDR back on is not allowed.
5249 *
5250 * Dual-mode controllers shall operate with the public
5251 * address as its identity address for BR/EDR and LE. So
5252 * reject the attempt to create an invalid configuration.
5253 *
5254 * The same restrictions applies when secure connections
5255 * has been enabled. For BR/EDR this is a controller feature
5256 * while for LE it is a host stack feature. This means that
5257 * switching BR/EDR back on when secure connections has been
5258 * enabled is not a supported transaction.
5259 */
5260 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5261 (bacmp(&hdev->static_addr, BDADDR_ANY) ||
5262 hci_dev_test_flag(hdev, HCI_SC_ENABLED))) {
5263 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5264 MGMT_STATUS_REJECTED);
5265 goto unlock;
5266 }
5267 }
5268
5269 if (pending_find(MGMT_OP_SET_BREDR, hdev)) {
5270 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5271 MGMT_STATUS_BUSY);
5272 goto unlock;
5273 }
5274
5275 cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
5276 if (!cmd) {
5277 err = -ENOMEM;
5278 goto unlock;
5279 }
5280
5281 /* We need to flip the bit already here so that update_adv_data
5282 * generates the correct flags.
5283 */
5284 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
5285
5286 hci_req_init(&req, hdev);
5287
5288 write_fast_connectable(&req, false);
5289 __hci_update_page_scan(&req);
5290
5291 /* Since only the advertising data flags will change, there
5292 * is no need to update the scan response data.
5293 */
5294 update_adv_data(&req);
5295
5296 err = hci_req_run(&req, set_bredr_complete);
5297 if (err < 0)
5298 mgmt_pending_remove(cmd);
5299
5300 unlock:
5301 hci_dev_unlock(hdev);
5302 return err;
5303 }
5304
5305 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5306 {
5307 struct mgmt_pending_cmd *cmd;
5308 struct mgmt_mode *cp;
5309
5310 BT_DBG("%s status %u", hdev->name, status);
5311
5312 hci_dev_lock(hdev);
5313
5314 cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
5315 if (!cmd)
5316 goto unlock;
5317
5318 if (status) {
5319 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
5320 mgmt_status(status));
5321 goto remove;
5322 }
5323
5324 cp = cmd->param;
5325
5326 switch (cp->val) {
5327 case 0x00:
5328 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
5329 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5330 break;
5331 case 0x01:
5332 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5333 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5334 break;
5335 case 0x02:
5336 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5337 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5338 break;
5339 }
5340
5341 send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
5342 new_settings(hdev, cmd->sk);
5343
5344 remove:
5345 mgmt_pending_remove(cmd);
5346 unlock:
5347 hci_dev_unlock(hdev);
5348 }
5349
5350 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
5351 void *data, u16 len)
5352 {
5353 struct mgmt_mode *cp = data;
5354 struct mgmt_pending_cmd *cmd;
5355 struct hci_request req;
5356 u8 val;
5357 int err;
5358
5359 BT_DBG("request for %s", hdev->name);
5360
5361 if (!lmp_sc_capable(hdev) &&
5362 !hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5363 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5364 MGMT_STATUS_NOT_SUPPORTED);
5365
5366 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5367 lmp_sc_capable(hdev) &&
5368 !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5369 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5370 MGMT_STATUS_REJECTED);
5371
5372 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5373 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5374 MGMT_STATUS_INVALID_PARAMS);
5375
5376 hci_dev_lock(hdev);
5377
5378 if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) ||
5379 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5380 bool changed;
5381
5382 if (cp->val) {
5383 changed = !hci_dev_test_and_set_flag(hdev,
5384 HCI_SC_ENABLED);
5385 if (cp->val == 0x02)
5386 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5387 else
5388 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5389 } else {
5390 changed = hci_dev_test_and_clear_flag(hdev,
5391 HCI_SC_ENABLED);
5392 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5393 }
5394
5395 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5396 if (err < 0)
5397 goto failed;
5398
5399 if (changed)
5400 err = new_settings(hdev, sk);
5401
5402 goto failed;
5403 }
5404
5405 if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
5406 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5407 MGMT_STATUS_BUSY);
5408 goto failed;
5409 }
5410
5411 val = !!cp->val;
5412
5413 if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
5414 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5415 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5416 goto failed;
5417 }
5418
5419 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
5420 if (!cmd) {
5421 err = -ENOMEM;
5422 goto failed;
5423 }
5424
5425 hci_req_init(&req, hdev);
5426 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
5427 err = hci_req_run(&req, sc_enable_complete);
5428 if (err < 0) {
5429 mgmt_pending_remove(cmd);
5430 goto failed;
5431 }
5432
5433 failed:
5434 hci_dev_unlock(hdev);
5435 return err;
5436 }
5437
5438 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
5439 void *data, u16 len)
5440 {
5441 struct mgmt_mode *cp = data;
5442 bool changed, use_changed;
5443 int err;
5444
5445 BT_DBG("request for %s", hdev->name);
5446
5447 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5448 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
5449 MGMT_STATUS_INVALID_PARAMS);
5450
5451 hci_dev_lock(hdev);
5452
5453 if (cp->val)
5454 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
5455 else
5456 changed = hci_dev_test_and_clear_flag(hdev,
5457 HCI_KEEP_DEBUG_KEYS);
5458
5459 if (cp->val == 0x02)
5460 use_changed = !hci_dev_test_and_set_flag(hdev,
5461 HCI_USE_DEBUG_KEYS);
5462 else
5463 use_changed = hci_dev_test_and_clear_flag(hdev,
5464 HCI_USE_DEBUG_KEYS);
5465
5466 if (hdev_is_powered(hdev) && use_changed &&
5467 hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
5468 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
5469 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
5470 sizeof(mode), &mode);
5471 }
5472
5473 err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
5474 if (err < 0)
5475 goto unlock;
5476
5477 if (changed)
5478 err = new_settings(hdev, sk);
5479
5480 unlock:
5481 hci_dev_unlock(hdev);
5482 return err;
5483 }
5484
5485 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5486 u16 len)
5487 {
5488 struct mgmt_cp_set_privacy *cp = cp_data;
5489 bool changed;
5490 int err;
5491
5492 BT_DBG("request for %s", hdev->name);
5493
5494 if (!lmp_le_capable(hdev))
5495 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5496 MGMT_STATUS_NOT_SUPPORTED);
5497
5498 if (cp->privacy != 0x00 && cp->privacy != 0x01)
5499 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5500 MGMT_STATUS_INVALID_PARAMS);
5501
5502 if (hdev_is_powered(hdev))
5503 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5504 MGMT_STATUS_REJECTED);
5505
5506 hci_dev_lock(hdev);
5507
5508 /* If user space supports this command it is also expected to
5509 * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
5510 */
5511 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5512
5513 if (cp->privacy) {
5514 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY);
5515 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
5516 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
5517 } else {
5518 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY);
5519 memset(hdev->irk, 0, sizeof(hdev->irk));
5520 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
5521 }
5522
5523 err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
5524 if (err < 0)
5525 goto unlock;
5526
5527 if (changed)
5528 err = new_settings(hdev, sk);
5529
5530 unlock:
5531 hci_dev_unlock(hdev);
5532 return err;
5533 }
5534
5535 static bool irk_is_valid(struct mgmt_irk_info *irk)
5536 {
5537 switch (irk->addr.type) {
5538 case BDADDR_LE_PUBLIC:
5539 return true;
5540
5541 case BDADDR_LE_RANDOM:
5542 /* Two most significant bits shall be set */
5543 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5544 return false;
5545 return true;
5546 }
5547
5548 return false;
5549 }
5550
5551 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5552 u16 len)
5553 {
5554 struct mgmt_cp_load_irks *cp = cp_data;
5555 const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) /
5556 sizeof(struct mgmt_irk_info));
5557 u16 irk_count, expected_len;
5558 int i, err;
5559
5560 BT_DBG("request for %s", hdev->name);
5561
5562 if (!lmp_le_capable(hdev))
5563 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5564 MGMT_STATUS_NOT_SUPPORTED);
5565
5566 irk_count = __le16_to_cpu(cp->irk_count);
5567 if (irk_count > max_irk_count) {
5568 BT_ERR("load_irks: too big irk_count value %u", irk_count);
5569 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5570 MGMT_STATUS_INVALID_PARAMS);
5571 }
5572
5573 expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
5574 if (expected_len != len) {
5575 BT_ERR("load_irks: expected %u bytes, got %u bytes",
5576 expected_len, len);
5577 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5578 MGMT_STATUS_INVALID_PARAMS);
5579 }
5580
5581 BT_DBG("%s irk_count %u", hdev->name, irk_count);
5582
5583 for (i = 0; i < irk_count; i++) {
5584 struct mgmt_irk_info *key = &cp->irks[i];
5585
5586 if (!irk_is_valid(key))
5587 return mgmt_cmd_status(sk, hdev->id,
5588 MGMT_OP_LOAD_IRKS,
5589 MGMT_STATUS_INVALID_PARAMS);
5590 }
5591
5592 hci_dev_lock(hdev);
5593
5594 hci_smp_irks_clear(hdev);
5595
5596 for (i = 0; i < irk_count; i++) {
5597 struct mgmt_irk_info *irk = &cp->irks[i];
5598 u8 addr_type;
5599
5600 if (irk->addr.type == BDADDR_LE_PUBLIC)
5601 addr_type = ADDR_LE_DEV_PUBLIC;
5602 else
5603 addr_type = ADDR_LE_DEV_RANDOM;
5604
5605 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val,
5606 BDADDR_ANY);
5607 }
5608
5609 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5610
5611 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
5612
5613 hci_dev_unlock(hdev);
5614
5615 return err;
5616 }
5617
5618 static bool ltk_is_valid(struct mgmt_ltk_info *key)
5619 {
5620 if (key->master != 0x00 && key->master != 0x01)
5621 return false;
5622
5623 switch (key->addr.type) {
5624 case BDADDR_LE_PUBLIC:
5625 return true;
5626
5627 case BDADDR_LE_RANDOM:
5628 /* Two most significant bits shall be set */
5629 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5630 return false;
5631 return true;
5632 }
5633
5634 return false;
5635 }
5636
5637 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
5638 void *cp_data, u16 len)
5639 {
5640 struct mgmt_cp_load_long_term_keys *cp = cp_data;
5641 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
5642 sizeof(struct mgmt_ltk_info));
5643 u16 key_count, expected_len;
5644 int i, err;
5645
5646 BT_DBG("request for %s", hdev->name);
5647
5648 if (!lmp_le_capable(hdev))
5649 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5650 MGMT_STATUS_NOT_SUPPORTED);
5651
5652 key_count = __le16_to_cpu(cp->key_count);
5653 if (key_count > max_key_count) {
5654 BT_ERR("load_ltks: too big key_count value %u", key_count);
5655 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5656 MGMT_STATUS_INVALID_PARAMS);
5657 }
5658
5659 expected_len = sizeof(*cp) + key_count *
5660 sizeof(struct mgmt_ltk_info);
5661 if (expected_len != len) {
5662 BT_ERR("load_keys: expected %u bytes, got %u bytes",
5663 expected_len, len);
5664 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5665 MGMT_STATUS_INVALID_PARAMS);
5666 }
5667
5668 BT_DBG("%s key_count %u", hdev->name, key_count);
5669
5670 for (i = 0; i < key_count; i++) {
5671 struct mgmt_ltk_info *key = &cp->keys[i];
5672
5673 if (!ltk_is_valid(key))
5674 return mgmt_cmd_status(sk, hdev->id,
5675 MGMT_OP_LOAD_LONG_TERM_KEYS,
5676 MGMT_STATUS_INVALID_PARAMS);
5677 }
5678
5679 hci_dev_lock(hdev);
5680
5681 hci_smp_ltks_clear(hdev);
5682
5683 for (i = 0; i < key_count; i++) {
5684 struct mgmt_ltk_info *key = &cp->keys[i];
5685 u8 type, addr_type, authenticated;
5686
5687 if (key->addr.type == BDADDR_LE_PUBLIC)
5688 addr_type = ADDR_LE_DEV_PUBLIC;
5689 else
5690 addr_type = ADDR_LE_DEV_RANDOM;
5691
5692 switch (key->type) {
5693 case MGMT_LTK_UNAUTHENTICATED:
5694 authenticated = 0x00;
5695 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5696 break;
5697 case MGMT_LTK_AUTHENTICATED:
5698 authenticated = 0x01;
5699 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5700 break;
5701 case MGMT_LTK_P256_UNAUTH:
5702 authenticated = 0x00;
5703 type = SMP_LTK_P256;
5704 break;
5705 case MGMT_LTK_P256_AUTH:
5706 authenticated = 0x01;
5707 type = SMP_LTK_P256;
5708 break;
5709 case MGMT_LTK_P256_DEBUG:
5710 authenticated = 0x00;
5711 type = SMP_LTK_P256_DEBUG;
5712 default:
5713 continue;
5714 }
5715
5716 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type,
5717 authenticated, key->val, key->enc_size, key->ediv,
5718 key->rand);
5719 }
5720
5721 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
5722 NULL, 0);
5723
5724 hci_dev_unlock(hdev);
5725
5726 return err;
5727 }
5728
5729 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5730 {
5731 struct hci_conn *conn = cmd->user_data;
5732 struct mgmt_rp_get_conn_info rp;
5733 int err;
5734
5735 memcpy(&rp.addr, cmd->param, sizeof(rp.addr));
5736
5737 if (status == MGMT_STATUS_SUCCESS) {
5738 rp.rssi = conn->rssi;
5739 rp.tx_power = conn->tx_power;
5740 rp.max_tx_power = conn->max_tx_power;
5741 } else {
5742 rp.rssi = HCI_RSSI_INVALID;
5743 rp.tx_power = HCI_TX_POWER_INVALID;
5744 rp.max_tx_power = HCI_TX_POWER_INVALID;
5745 }
5746
5747 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO,
5748 status, &rp, sizeof(rp));
5749
5750 hci_conn_drop(conn);
5751 hci_conn_put(conn);
5752
5753 return err;
5754 }
5755
5756 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status,
5757 u16 opcode)
5758 {
5759 struct hci_cp_read_rssi *cp;
5760 struct mgmt_pending_cmd *cmd;
5761 struct hci_conn *conn;
5762 u16 handle;
5763 u8 status;
5764
5765 BT_DBG("status 0x%02x", hci_status);
5766
5767 hci_dev_lock(hdev);
5768
5769 /* Commands sent in request are either Read RSSI or Read Transmit Power
5770 * Level so we check which one was last sent to retrieve connection
5771 * handle. Both commands have handle as first parameter so it's safe to
5772 * cast data on the same command struct.
5773 *
5774 * First command sent is always Read RSSI and we fail only if it fails.
5775 * In other case we simply override error to indicate success as we
5776 * already remembered if TX power value is actually valid.
5777 */
5778 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI);
5779 if (!cp) {
5780 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
5781 status = MGMT_STATUS_SUCCESS;
5782 } else {
5783 status = mgmt_status(hci_status);
5784 }
5785
5786 if (!cp) {
5787 BT_ERR("invalid sent_cmd in conn_info response");
5788 goto unlock;
5789 }
5790
5791 handle = __le16_to_cpu(cp->handle);
5792 conn = hci_conn_hash_lookup_handle(hdev, handle);
5793 if (!conn) {
5794 BT_ERR("unknown handle (%d) in conn_info response", handle);
5795 goto unlock;
5796 }
5797
5798 cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn);
5799 if (!cmd)
5800 goto unlock;
5801
5802 cmd->cmd_complete(cmd, status);
5803 mgmt_pending_remove(cmd);
5804
5805 unlock:
5806 hci_dev_unlock(hdev);
5807 }
5808
5809 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
5810 u16 len)
5811 {
5812 struct mgmt_cp_get_conn_info *cp = data;
5813 struct mgmt_rp_get_conn_info rp;
5814 struct hci_conn *conn;
5815 unsigned long conn_info_age;
5816 int err = 0;
5817
5818 BT_DBG("%s", hdev->name);
5819
5820 memset(&rp, 0, sizeof(rp));
5821 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5822 rp.addr.type = cp->addr.type;
5823
5824 if (!bdaddr_type_is_valid(cp->addr.type))
5825 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5826 MGMT_STATUS_INVALID_PARAMS,
5827 &rp, sizeof(rp));
5828
5829 hci_dev_lock(hdev);
5830
5831 if (!hdev_is_powered(hdev)) {
5832 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5833 MGMT_STATUS_NOT_POWERED, &rp,
5834 sizeof(rp));
5835 goto unlock;
5836 }
5837
5838 if (cp->addr.type == BDADDR_BREDR)
5839 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5840 &cp->addr.bdaddr);
5841 else
5842 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
5843
5844 if (!conn || conn->state != BT_CONNECTED) {
5845 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5846 MGMT_STATUS_NOT_CONNECTED, &rp,
5847 sizeof(rp));
5848 goto unlock;
5849 }
5850
5851 if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) {
5852 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5853 MGMT_STATUS_BUSY, &rp, sizeof(rp));
5854 goto unlock;
5855 }
5856
5857 /* To avoid client trying to guess when to poll again for information we
5858 * calculate conn info age as random value between min/max set in hdev.
5859 */
5860 conn_info_age = hdev->conn_info_min_age +
5861 prandom_u32_max(hdev->conn_info_max_age -
5862 hdev->conn_info_min_age);
5863
5864 /* Query controller to refresh cached values if they are too old or were
5865 * never read.
5866 */
5867 if (time_after(jiffies, conn->conn_info_timestamp +
5868 msecs_to_jiffies(conn_info_age)) ||
5869 !conn->conn_info_timestamp) {
5870 struct hci_request req;
5871 struct hci_cp_read_tx_power req_txp_cp;
5872 struct hci_cp_read_rssi req_rssi_cp;
5873 struct mgmt_pending_cmd *cmd;
5874
5875 hci_req_init(&req, hdev);
5876 req_rssi_cp.handle = cpu_to_le16(conn->handle);
5877 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp),
5878 &req_rssi_cp);
5879
5880 /* For LE links TX power does not change thus we don't need to
5881 * query for it once value is known.
5882 */
5883 if (!bdaddr_type_is_le(cp->addr.type) ||
5884 conn->tx_power == HCI_TX_POWER_INVALID) {
5885 req_txp_cp.handle = cpu_to_le16(conn->handle);
5886 req_txp_cp.type = 0x00;
5887 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5888 sizeof(req_txp_cp), &req_txp_cp);
5889 }
5890
5891 /* Max TX power needs to be read only once per connection */
5892 if (conn->max_tx_power == HCI_TX_POWER_INVALID) {
5893 req_txp_cp.handle = cpu_to_le16(conn->handle);
5894 req_txp_cp.type = 0x01;
5895 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5896 sizeof(req_txp_cp), &req_txp_cp);
5897 }
5898
5899 err = hci_req_run(&req, conn_info_refresh_complete);
5900 if (err < 0)
5901 goto unlock;
5902
5903 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev,
5904 data, len);
5905 if (!cmd) {
5906 err = -ENOMEM;
5907 goto unlock;
5908 }
5909
5910 hci_conn_hold(conn);
5911 cmd->user_data = hci_conn_get(conn);
5912 cmd->cmd_complete = conn_info_cmd_complete;
5913
5914 conn->conn_info_timestamp = jiffies;
5915 } else {
5916 /* Cache is valid, just reply with values cached in hci_conn */
5917 rp.rssi = conn->rssi;
5918 rp.tx_power = conn->tx_power;
5919 rp.max_tx_power = conn->max_tx_power;
5920
5921 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5922 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
5923 }
5924
5925 unlock:
5926 hci_dev_unlock(hdev);
5927 return err;
5928 }
5929
5930 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5931 {
5932 struct hci_conn *conn = cmd->user_data;
5933 struct mgmt_rp_get_clock_info rp;
5934 struct hci_dev *hdev;
5935 int err;
5936
5937 memset(&rp, 0, sizeof(rp));
5938 memcpy(&rp.addr, &cmd->param, sizeof(rp.addr));
5939
5940 if (status)
5941 goto complete;
5942
5943 hdev = hci_dev_get(cmd->index);
5944 if (hdev) {
5945 rp.local_clock = cpu_to_le32(hdev->clock);
5946 hci_dev_put(hdev);
5947 }
5948
5949 if (conn) {
5950 rp.piconet_clock = cpu_to_le32(conn->clock);
5951 rp.accuracy = cpu_to_le16(conn->clock_accuracy);
5952 }
5953
5954 complete:
5955 err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp,
5956 sizeof(rp));
5957
5958 if (conn) {
5959 hci_conn_drop(conn);
5960 hci_conn_put(conn);
5961 }
5962
5963 return err;
5964 }
5965
5966 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5967 {
5968 struct hci_cp_read_clock *hci_cp;
5969 struct mgmt_pending_cmd *cmd;
5970 struct hci_conn *conn;
5971
5972 BT_DBG("%s status %u", hdev->name, status);
5973
5974 hci_dev_lock(hdev);
5975
5976 hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
5977 if (!hci_cp)
5978 goto unlock;
5979
5980 if (hci_cp->which) {
5981 u16 handle = __le16_to_cpu(hci_cp->handle);
5982 conn = hci_conn_hash_lookup_handle(hdev, handle);
5983 } else {
5984 conn = NULL;
5985 }
5986
5987 cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn);
5988 if (!cmd)
5989 goto unlock;
5990
5991 cmd->cmd_complete(cmd, mgmt_status(status));
5992 mgmt_pending_remove(cmd);
5993
5994 unlock:
5995 hci_dev_unlock(hdev);
5996 }
5997
5998 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data,
5999 u16 len)
6000 {
6001 struct mgmt_cp_get_clock_info *cp = data;
6002 struct mgmt_rp_get_clock_info rp;
6003 struct hci_cp_read_clock hci_cp;
6004 struct mgmt_pending_cmd *cmd;
6005 struct hci_request req;
6006 struct hci_conn *conn;
6007 int err;
6008
6009 BT_DBG("%s", hdev->name);
6010
6011 memset(&rp, 0, sizeof(rp));
6012 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
6013 rp.addr.type = cp->addr.type;
6014
6015 if (cp->addr.type != BDADDR_BREDR)
6016 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6017 MGMT_STATUS_INVALID_PARAMS,
6018 &rp, sizeof(rp));
6019
6020 hci_dev_lock(hdev);
6021
6022 if (!hdev_is_powered(hdev)) {
6023 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6024 MGMT_STATUS_NOT_POWERED, &rp,
6025 sizeof(rp));
6026 goto unlock;
6027 }
6028
6029 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6030 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
6031 &cp->addr.bdaddr);
6032 if (!conn || conn->state != BT_CONNECTED) {
6033 err = mgmt_cmd_complete(sk, hdev->id,
6034 MGMT_OP_GET_CLOCK_INFO,
6035 MGMT_STATUS_NOT_CONNECTED,
6036 &rp, sizeof(rp));
6037 goto unlock;
6038 }
6039 } else {
6040 conn = NULL;
6041 }
6042
6043 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len);
6044 if (!cmd) {
6045 err = -ENOMEM;
6046 goto unlock;
6047 }
6048
6049 cmd->cmd_complete = clock_info_cmd_complete;
6050
6051 hci_req_init(&req, hdev);
6052
6053 memset(&hci_cp, 0, sizeof(hci_cp));
6054 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6055
6056 if (conn) {
6057 hci_conn_hold(conn);
6058 cmd->user_data = hci_conn_get(conn);
6059
6060 hci_cp.handle = cpu_to_le16(conn->handle);
6061 hci_cp.which = 0x01; /* Piconet clock */
6062 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6063 }
6064
6065 err = hci_req_run(&req, get_clock_info_complete);
6066 if (err < 0)
6067 mgmt_pending_remove(cmd);
6068
6069 unlock:
6070 hci_dev_unlock(hdev);
6071 return err;
6072 }
6073
6074 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
6075 {
6076 struct hci_conn *conn;
6077
6078 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
6079 if (!conn)
6080 return false;
6081
6082 if (conn->dst_type != type)
6083 return false;
6084
6085 if (conn->state != BT_CONNECTED)
6086 return false;
6087
6088 return true;
6089 }
6090
6091 /* This function requires the caller holds hdev->lock */
6092 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
6093 u8 addr_type, u8 auto_connect)
6094 {
6095 struct hci_dev *hdev = req->hdev;
6096 struct hci_conn_params *params;
6097
6098 params = hci_conn_params_add(hdev, addr, addr_type);
6099 if (!params)
6100 return -EIO;
6101
6102 if (params->auto_connect == auto_connect)
6103 return 0;
6104
6105 list_del_init(&params->action);
6106
6107 switch (auto_connect) {
6108 case HCI_AUTO_CONN_DISABLED:
6109 case HCI_AUTO_CONN_LINK_LOSS:
6110 __hci_update_background_scan(req);
6111 break;
6112 case HCI_AUTO_CONN_REPORT:
6113 list_add(&params->action, &hdev->pend_le_reports);
6114 __hci_update_background_scan(req);
6115 break;
6116 case HCI_AUTO_CONN_DIRECT:
6117 case HCI_AUTO_CONN_ALWAYS:
6118 if (!is_connected(hdev, addr, addr_type)) {
6119 list_add(&params->action, &hdev->pend_le_conns);
6120 __hci_update_background_scan(req);
6121 }
6122 break;
6123 }
6124
6125 params->auto_connect = auto_connect;
6126
6127 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
6128 auto_connect);
6129
6130 return 0;
6131 }
6132
6133 static void device_added(struct sock *sk, struct hci_dev *hdev,
6134 bdaddr_t *bdaddr, u8 type, u8 action)
6135 {
6136 struct mgmt_ev_device_added ev;
6137
6138 bacpy(&ev.addr.bdaddr, bdaddr);
6139 ev.addr.type = type;
6140 ev.action = action;
6141
6142 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
6143 }
6144
6145 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6146 {
6147 struct mgmt_pending_cmd *cmd;
6148
6149 BT_DBG("status 0x%02x", status);
6150
6151 hci_dev_lock(hdev);
6152
6153 cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev);
6154 if (!cmd)
6155 goto unlock;
6156
6157 cmd->cmd_complete(cmd, mgmt_status(status));
6158 mgmt_pending_remove(cmd);
6159
6160 unlock:
6161 hci_dev_unlock(hdev);
6162 }
6163
6164 static int add_device(struct sock *sk, struct hci_dev *hdev,
6165 void *data, u16 len)
6166 {
6167 struct mgmt_cp_add_device *cp = data;
6168 struct mgmt_pending_cmd *cmd;
6169 struct hci_request req;
6170 u8 auto_conn, addr_type;
6171 int err;
6172
6173 BT_DBG("%s", hdev->name);
6174
6175 if (!bdaddr_type_is_valid(cp->addr.type) ||
6176 !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
6177 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6178 MGMT_STATUS_INVALID_PARAMS,
6179 &cp->addr, sizeof(cp->addr));
6180
6181 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
6182 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6183 MGMT_STATUS_INVALID_PARAMS,
6184 &cp->addr, sizeof(cp->addr));
6185
6186 hci_req_init(&req, hdev);
6187
6188 hci_dev_lock(hdev);
6189
6190 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
6191 if (!cmd) {
6192 err = -ENOMEM;
6193 goto unlock;
6194 }
6195
6196 cmd->cmd_complete = addr_cmd_complete;
6197
6198 if (cp->addr.type == BDADDR_BREDR) {
6199 /* Only incoming connections action is supported for now */
6200 if (cp->action != 0x01) {
6201 err = cmd->cmd_complete(cmd,
6202 MGMT_STATUS_INVALID_PARAMS);
6203 mgmt_pending_remove(cmd);
6204 goto unlock;
6205 }
6206
6207 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
6208 cp->addr.type);
6209 if (err)
6210 goto unlock;
6211
6212 __hci_update_page_scan(&req);
6213
6214 goto added;
6215 }
6216
6217 if (cp->addr.type == BDADDR_LE_PUBLIC)
6218 addr_type = ADDR_LE_DEV_PUBLIC;
6219 else
6220 addr_type = ADDR_LE_DEV_RANDOM;
6221
6222 if (cp->action == 0x02)
6223 auto_conn = HCI_AUTO_CONN_ALWAYS;
6224 else if (cp->action == 0x01)
6225 auto_conn = HCI_AUTO_CONN_DIRECT;
6226 else
6227 auto_conn = HCI_AUTO_CONN_REPORT;
6228
6229 /* Kernel internally uses conn_params with resolvable private
6230 * address, but Add Device allows only identity addresses.
6231 * Make sure it is enforced before calling
6232 * hci_conn_params_lookup.
6233 */
6234 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6235 err = cmd->cmd_complete(cmd, MGMT_STATUS_INVALID_PARAMS);
6236 mgmt_pending_remove(cmd);
6237 goto unlock;
6238 }
6239
6240 /* If the connection parameters don't exist for this device,
6241 * they will be created and configured with defaults.
6242 */
6243 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
6244 auto_conn) < 0) {
6245 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
6246 mgmt_pending_remove(cmd);
6247 goto unlock;
6248 }
6249
6250 added:
6251 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
6252
6253 err = hci_req_run(&req, add_device_complete);
6254 if (err < 0) {
6255 /* ENODATA means no HCI commands were needed (e.g. if
6256 * the adapter is powered off).
6257 */
6258 if (err == -ENODATA)
6259 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6260 mgmt_pending_remove(cmd);
6261 }
6262
6263 unlock:
6264 hci_dev_unlock(hdev);
6265 return err;
6266 }
6267
6268 static void device_removed(struct sock *sk, struct hci_dev *hdev,
6269 bdaddr_t *bdaddr, u8 type)
6270 {
6271 struct mgmt_ev_device_removed ev;
6272
6273 bacpy(&ev.addr.bdaddr, bdaddr);
6274 ev.addr.type = type;
6275
6276 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
6277 }
6278
6279 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6280 {
6281 struct mgmt_pending_cmd *cmd;
6282
6283 BT_DBG("status 0x%02x", status);
6284
6285 hci_dev_lock(hdev);
6286
6287 cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
6288 if (!cmd)
6289 goto unlock;
6290
6291 cmd->cmd_complete(cmd, mgmt_status(status));
6292 mgmt_pending_remove(cmd);
6293
6294 unlock:
6295 hci_dev_unlock(hdev);
6296 }
6297
6298 static int remove_device(struct sock *sk, struct hci_dev *hdev,
6299 void *data, u16 len)
6300 {
6301 struct mgmt_cp_remove_device *cp = data;
6302 struct mgmt_pending_cmd *cmd;
6303 struct hci_request req;
6304 int err;
6305
6306 BT_DBG("%s", hdev->name);
6307
6308 hci_req_init(&req, hdev);
6309
6310 hci_dev_lock(hdev);
6311
6312 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
6313 if (!cmd) {
6314 err = -ENOMEM;
6315 goto unlock;
6316 }
6317
6318 cmd->cmd_complete = addr_cmd_complete;
6319
6320 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6321 struct hci_conn_params *params;
6322 u8 addr_type;
6323
6324 if (!bdaddr_type_is_valid(cp->addr.type)) {
6325 err = cmd->cmd_complete(cmd,
6326 MGMT_STATUS_INVALID_PARAMS);
6327 mgmt_pending_remove(cmd);
6328 goto unlock;
6329 }
6330
6331 if (cp->addr.type == BDADDR_BREDR) {
6332 err = hci_bdaddr_list_del(&hdev->whitelist,
6333 &cp->addr.bdaddr,
6334 cp->addr.type);
6335 if (err) {
6336 err = cmd->cmd_complete(cmd,
6337 MGMT_STATUS_INVALID_PARAMS);
6338 mgmt_pending_remove(cmd);
6339 goto unlock;
6340 }
6341
6342 __hci_update_page_scan(&req);
6343
6344 device_removed(sk, hdev, &cp->addr.bdaddr,
6345 cp->addr.type);
6346 goto complete;
6347 }
6348
6349 if (cp->addr.type == BDADDR_LE_PUBLIC)
6350 addr_type = ADDR_LE_DEV_PUBLIC;
6351 else
6352 addr_type = ADDR_LE_DEV_RANDOM;
6353
6354 /* Kernel internally uses conn_params with resolvable private
6355 * address, but Remove Device allows only identity addresses.
6356 * Make sure it is enforced before calling
6357 * hci_conn_params_lookup.
6358 */
6359 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6360 err = cmd->cmd_complete(cmd,
6361 MGMT_STATUS_INVALID_PARAMS);
6362 mgmt_pending_remove(cmd);
6363 goto unlock;
6364 }
6365
6366 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
6367 addr_type);
6368 if (!params) {
6369 err = cmd->cmd_complete(cmd,
6370 MGMT_STATUS_INVALID_PARAMS);
6371 mgmt_pending_remove(cmd);
6372 goto unlock;
6373 }
6374
6375 if (params->auto_connect == HCI_AUTO_CONN_DISABLED) {
6376 err = cmd->cmd_complete(cmd,
6377 MGMT_STATUS_INVALID_PARAMS);
6378 mgmt_pending_remove(cmd);
6379 goto unlock;
6380 }
6381
6382 list_del(&params->action);
6383 list_del(&params->list);
6384 kfree(params);
6385 __hci_update_background_scan(&req);
6386
6387 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
6388 } else {
6389 struct hci_conn_params *p, *tmp;
6390 struct bdaddr_list *b, *btmp;
6391
6392 if (cp->addr.type) {
6393 err = cmd->cmd_complete(cmd,
6394 MGMT_STATUS_INVALID_PARAMS);
6395 mgmt_pending_remove(cmd);
6396 goto unlock;
6397 }
6398
6399 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
6400 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
6401 list_del(&b->list);
6402 kfree(b);
6403 }
6404
6405 __hci_update_page_scan(&req);
6406
6407 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
6408 if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
6409 continue;
6410 device_removed(sk, hdev, &p->addr, p->addr_type);
6411 list_del(&p->action);
6412 list_del(&p->list);
6413 kfree(p);
6414 }
6415
6416 BT_DBG("All LE connection parameters were removed");
6417
6418 __hci_update_background_scan(&req);
6419 }
6420
6421 complete:
6422 err = hci_req_run(&req, remove_device_complete);
6423 if (err < 0) {
6424 /* ENODATA means no HCI commands were needed (e.g. if
6425 * the adapter is powered off).
6426 */
6427 if (err == -ENODATA)
6428 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6429 mgmt_pending_remove(cmd);
6430 }
6431
6432 unlock:
6433 hci_dev_unlock(hdev);
6434 return err;
6435 }
6436
6437 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
6438 u16 len)
6439 {
6440 struct mgmt_cp_load_conn_param *cp = data;
6441 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
6442 sizeof(struct mgmt_conn_param));
6443 u16 param_count, expected_len;
6444 int i;
6445
6446 if (!lmp_le_capable(hdev))
6447 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6448 MGMT_STATUS_NOT_SUPPORTED);
6449
6450 param_count = __le16_to_cpu(cp->param_count);
6451 if (param_count > max_param_count) {
6452 BT_ERR("load_conn_param: too big param_count value %u",
6453 param_count);
6454 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6455 MGMT_STATUS_INVALID_PARAMS);
6456 }
6457
6458 expected_len = sizeof(*cp) + param_count *
6459 sizeof(struct mgmt_conn_param);
6460 if (expected_len != len) {
6461 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
6462 expected_len, len);
6463 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6464 MGMT_STATUS_INVALID_PARAMS);
6465 }
6466
6467 BT_DBG("%s param_count %u", hdev->name, param_count);
6468
6469 hci_dev_lock(hdev);
6470
6471 hci_conn_params_clear_disabled(hdev);
6472
6473 for (i = 0; i < param_count; i++) {
6474 struct mgmt_conn_param *param = &cp->params[i];
6475 struct hci_conn_params *hci_param;
6476 u16 min, max, latency, timeout;
6477 u8 addr_type;
6478
6479 BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
6480 param->addr.type);
6481
6482 if (param->addr.type == BDADDR_LE_PUBLIC) {
6483 addr_type = ADDR_LE_DEV_PUBLIC;
6484 } else if (param->addr.type == BDADDR_LE_RANDOM) {
6485 addr_type = ADDR_LE_DEV_RANDOM;
6486 } else {
6487 BT_ERR("Ignoring invalid connection parameters");
6488 continue;
6489 }
6490
6491 min = le16_to_cpu(param->min_interval);
6492 max = le16_to_cpu(param->max_interval);
6493 latency = le16_to_cpu(param->latency);
6494 timeout = le16_to_cpu(param->timeout);
6495
6496 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
6497 min, max, latency, timeout);
6498
6499 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
6500 BT_ERR("Ignoring invalid connection parameters");
6501 continue;
6502 }
6503
6504 hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
6505 addr_type);
6506 if (!hci_param) {
6507 BT_ERR("Failed to add connection parameters");
6508 continue;
6509 }
6510
6511 hci_param->conn_min_interval = min;
6512 hci_param->conn_max_interval = max;
6513 hci_param->conn_latency = latency;
6514 hci_param->supervision_timeout = timeout;
6515 }
6516
6517 hci_dev_unlock(hdev);
6518
6519 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0,
6520 NULL, 0);
6521 }
6522
6523 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
6524 void *data, u16 len)
6525 {
6526 struct mgmt_cp_set_external_config *cp = data;
6527 bool changed;
6528 int err;
6529
6530 BT_DBG("%s", hdev->name);
6531
6532 if (hdev_is_powered(hdev))
6533 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6534 MGMT_STATUS_REJECTED);
6535
6536 if (cp->config != 0x00 && cp->config != 0x01)
6537 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6538 MGMT_STATUS_INVALID_PARAMS);
6539
6540 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6541 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6542 MGMT_STATUS_NOT_SUPPORTED);
6543
6544 hci_dev_lock(hdev);
6545
6546 if (cp->config)
6547 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED);
6548 else
6549 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED);
6550
6551 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6552 if (err < 0)
6553 goto unlock;
6554
6555 if (!changed)
6556 goto unlock;
6557
6558 err = new_options(hdev, sk);
6559
6560 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) {
6561 mgmt_index_removed(hdev);
6562
6563 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) {
6564 hci_dev_set_flag(hdev, HCI_CONFIG);
6565 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6566
6567 queue_work(hdev->req_workqueue, &hdev->power_on);
6568 } else {
6569 set_bit(HCI_RAW, &hdev->flags);
6570 mgmt_index_added(hdev);
6571 }
6572 }
6573
6574 unlock:
6575 hci_dev_unlock(hdev);
6576 return err;
6577 }
6578
6579 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6580 void *data, u16 len)
6581 {
6582 struct mgmt_cp_set_public_address *cp = data;
6583 bool changed;
6584 int err;
6585
6586 BT_DBG("%s", hdev->name);
6587
6588 if (hdev_is_powered(hdev))
6589 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6590 MGMT_STATUS_REJECTED);
6591
6592 if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6593 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6594 MGMT_STATUS_INVALID_PARAMS);
6595
6596 if (!hdev->set_bdaddr)
6597 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6598 MGMT_STATUS_NOT_SUPPORTED);
6599
6600 hci_dev_lock(hdev);
6601
6602 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6603 bacpy(&hdev->public_addr, &cp->bdaddr);
6604
6605 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6606 if (err < 0)
6607 goto unlock;
6608
6609 if (!changed)
6610 goto unlock;
6611
6612 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
6613 err = new_options(hdev, sk);
6614
6615 if (is_configured(hdev)) {
6616 mgmt_index_removed(hdev);
6617
6618 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED);
6619
6620 hci_dev_set_flag(hdev, HCI_CONFIG);
6621 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6622
6623 queue_work(hdev->req_workqueue, &hdev->power_on);
6624 }
6625
6626 unlock:
6627 hci_dev_unlock(hdev);
6628 return err;
6629 }
6630
6631 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6632 u8 data_len)
6633 {
6634 eir[eir_len++] = sizeof(type) + data_len;
6635 eir[eir_len++] = type;
6636 memcpy(&eir[eir_len], data, data_len);
6637 eir_len += data_len;
6638
6639 return eir_len;
6640 }
6641
6642 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
6643 u16 opcode, struct sk_buff *skb)
6644 {
6645 const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp;
6646 struct mgmt_rp_read_local_oob_ext_data *mgmt_rp;
6647 u8 *h192, *r192, *h256, *r256;
6648 struct mgmt_pending_cmd *cmd;
6649 u16 eir_len;
6650 int err;
6651
6652 BT_DBG("%s status %u", hdev->name, status);
6653
6654 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev);
6655 if (!cmd)
6656 return;
6657
6658 mgmt_cp = cmd->param;
6659
6660 if (status) {
6661 status = mgmt_status(status);
6662 eir_len = 0;
6663
6664 h192 = NULL;
6665 r192 = NULL;
6666 h256 = NULL;
6667 r256 = NULL;
6668 } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
6669 struct hci_rp_read_local_oob_data *rp;
6670
6671 if (skb->len != sizeof(*rp)) {
6672 status = MGMT_STATUS_FAILED;
6673 eir_len = 0;
6674 } else {
6675 status = MGMT_STATUS_SUCCESS;
6676 rp = (void *)skb->data;
6677
6678 eir_len = 5 + 18 + 18;
6679 h192 = rp->hash;
6680 r192 = rp->rand;
6681 h256 = NULL;
6682 r256 = NULL;
6683 }
6684 } else {
6685 struct hci_rp_read_local_oob_ext_data *rp;
6686
6687 if (skb->len != sizeof(*rp)) {
6688 status = MGMT_STATUS_FAILED;
6689 eir_len = 0;
6690 } else {
6691 status = MGMT_STATUS_SUCCESS;
6692 rp = (void *)skb->data;
6693
6694 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
6695 eir_len = 5 + 18 + 18;
6696 h192 = NULL;
6697 r192 = NULL;
6698 } else {
6699 eir_len = 5 + 18 + 18 + 18 + 18;
6700 h192 = rp->hash192;
6701 r192 = rp->rand192;
6702 }
6703
6704 h256 = rp->hash256;
6705 r256 = rp->rand256;
6706 }
6707 }
6708
6709 mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL);
6710 if (!mgmt_rp)
6711 goto done;
6712
6713 if (status)
6714 goto send_rsp;
6715
6716 eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
6717 hdev->dev_class, 3);
6718
6719 if (h192 && r192) {
6720 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6721 EIR_SSP_HASH_C192, h192, 16);
6722 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6723 EIR_SSP_RAND_R192, r192, 16);
6724 }
6725
6726 if (h256 && r256) {
6727 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6728 EIR_SSP_HASH_C256, h256, 16);
6729 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6730 EIR_SSP_RAND_R256, r256, 16);
6731 }
6732
6733 send_rsp:
6734 mgmt_rp->type = mgmt_cp->type;
6735 mgmt_rp->eir_len = cpu_to_le16(eir_len);
6736
6737 err = mgmt_cmd_complete(cmd->sk, hdev->id,
6738 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status,
6739 mgmt_rp, sizeof(*mgmt_rp) + eir_len);
6740 if (err < 0 || status)
6741 goto done;
6742
6743 hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS);
6744
6745 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6746 mgmt_rp, sizeof(*mgmt_rp) + eir_len,
6747 HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
6748 done:
6749 kfree(mgmt_rp);
6750 mgmt_pending_remove(cmd);
6751 }
6752
6753 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
6754 struct mgmt_cp_read_local_oob_ext_data *cp)
6755 {
6756 struct mgmt_pending_cmd *cmd;
6757 struct hci_request req;
6758 int err;
6759
6760 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
6761 cp, sizeof(*cp));
6762 if (!cmd)
6763 return -ENOMEM;
6764
6765 hci_req_init(&req, hdev);
6766
6767 if (bredr_sc_enabled(hdev))
6768 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
6769 else
6770 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
6771
6772 err = hci_req_run_skb(&req, read_local_oob_ext_data_complete);
6773 if (err < 0) {
6774 mgmt_pending_remove(cmd);
6775 return err;
6776 }
6777
6778 return 0;
6779 }
6780
6781 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
6782 void *data, u16 data_len)
6783 {
6784 struct mgmt_cp_read_local_oob_ext_data *cp = data;
6785 struct mgmt_rp_read_local_oob_ext_data *rp;
6786 size_t rp_len;
6787 u16 eir_len;
6788 u8 status, flags, role, addr[7], hash[16], rand[16];
6789 int err;
6790
6791 BT_DBG("%s", hdev->name);
6792
6793 if (hdev_is_powered(hdev)) {
6794 switch (cp->type) {
6795 case BIT(BDADDR_BREDR):
6796 status = mgmt_bredr_support(hdev);
6797 if (status)
6798 eir_len = 0;
6799 else
6800 eir_len = 5;
6801 break;
6802 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6803 status = mgmt_le_support(hdev);
6804 if (status)
6805 eir_len = 0;
6806 else
6807 eir_len = 9 + 3 + 18 + 18 + 3;
6808 break;
6809 default:
6810 status = MGMT_STATUS_INVALID_PARAMS;
6811 eir_len = 0;
6812 break;
6813 }
6814 } else {
6815 status = MGMT_STATUS_NOT_POWERED;
6816 eir_len = 0;
6817 }
6818
6819 rp_len = sizeof(*rp) + eir_len;
6820 rp = kmalloc(rp_len, GFP_ATOMIC);
6821 if (!rp)
6822 return -ENOMEM;
6823
6824 if (status)
6825 goto complete;
6826
6827 hci_dev_lock(hdev);
6828
6829 eir_len = 0;
6830 switch (cp->type) {
6831 case BIT(BDADDR_BREDR):
6832 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
6833 err = read_local_ssp_oob_req(hdev, sk, cp);
6834 hci_dev_unlock(hdev);
6835 if (!err)
6836 goto done;
6837
6838 status = MGMT_STATUS_FAILED;
6839 goto complete;
6840 } else {
6841 eir_len = eir_append_data(rp->eir, eir_len,
6842 EIR_CLASS_OF_DEV,
6843 hdev->dev_class, 3);
6844 }
6845 break;
6846 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6847 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
6848 smp_generate_oob(hdev, hash, rand) < 0) {
6849 hci_dev_unlock(hdev);
6850 status = MGMT_STATUS_FAILED;
6851 goto complete;
6852 }
6853
6854 /* This should return the active RPA, but since the RPA
6855 * is only programmed on demand, it is really hard to fill
6856 * this in at the moment. For now disallow retrieving
6857 * local out-of-band data when privacy is in use.
6858 *
6859 * Returning the identity address will not help here since
6860 * pairing happens before the identity resolving key is
6861 * known and thus the connection establishment happens
6862 * based on the RPA and not the identity address.
6863 */
6864 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6865 hci_dev_unlock(hdev);
6866 status = MGMT_STATUS_REJECTED;
6867 goto complete;
6868 }
6869
6870 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
6871 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
6872 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
6873 bacmp(&hdev->static_addr, BDADDR_ANY))) {
6874 memcpy(addr, &hdev->static_addr, 6);
6875 addr[6] = 0x01;
6876 } else {
6877 memcpy(addr, &hdev->bdaddr, 6);
6878 addr[6] = 0x00;
6879 }
6880
6881 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR,
6882 addr, sizeof(addr));
6883
6884 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
6885 role = 0x02;
6886 else
6887 role = 0x01;
6888
6889 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE,
6890 &role, sizeof(role));
6891
6892 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) {
6893 eir_len = eir_append_data(rp->eir, eir_len,
6894 EIR_LE_SC_CONFIRM,
6895 hash, sizeof(hash));
6896
6897 eir_len = eir_append_data(rp->eir, eir_len,
6898 EIR_LE_SC_RANDOM,
6899 rand, sizeof(rand));
6900 }
6901
6902 flags = get_adv_discov_flags(hdev);
6903
6904 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
6905 flags |= LE_AD_NO_BREDR;
6906
6907 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS,
6908 &flags, sizeof(flags));
6909 break;
6910 }
6911
6912 hci_dev_unlock(hdev);
6913
6914 hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS);
6915
6916 status = MGMT_STATUS_SUCCESS;
6917
6918 complete:
6919 rp->type = cp->type;
6920 rp->eir_len = cpu_to_le16(eir_len);
6921
6922 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
6923 status, rp, sizeof(*rp) + eir_len);
6924 if (err < 0 || status)
6925 goto done;
6926
6927 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6928 rp, sizeof(*rp) + eir_len,
6929 HCI_MGMT_OOB_DATA_EVENTS, sk);
6930
6931 done:
6932 kfree(rp);
6933
6934 return err;
6935 }
6936
6937 static u32 get_supported_adv_flags(struct hci_dev *hdev)
6938 {
6939 u32 flags = 0;
6940
6941 flags |= MGMT_ADV_FLAG_CONNECTABLE;
6942 flags |= MGMT_ADV_FLAG_DISCOV;
6943 flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
6944 flags |= MGMT_ADV_FLAG_MANAGED_FLAGS;
6945
6946 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID)
6947 flags |= MGMT_ADV_FLAG_TX_POWER;
6948
6949 return flags;
6950 }
6951
6952 static int read_adv_features(struct sock *sk, struct hci_dev *hdev,
6953 void *data, u16 data_len)
6954 {
6955 struct mgmt_rp_read_adv_features *rp;
6956 size_t rp_len;
6957 int err, i;
6958 bool instance;
6959 struct adv_info *adv_instance;
6960 u32 supported_flags;
6961
6962 BT_DBG("%s", hdev->name);
6963
6964 if (!lmp_le_capable(hdev))
6965 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6966 MGMT_STATUS_REJECTED);
6967
6968 hci_dev_lock(hdev);
6969
6970 rp_len = sizeof(*rp);
6971
6972 instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE);
6973 if (instance)
6974 rp_len += hdev->adv_instance_cnt;
6975
6976 rp = kmalloc(rp_len, GFP_ATOMIC);
6977 if (!rp) {
6978 hci_dev_unlock(hdev);
6979 return -ENOMEM;
6980 }
6981
6982 supported_flags = get_supported_adv_flags(hdev);
6983
6984 rp->supported_flags = cpu_to_le32(supported_flags);
6985 rp->max_adv_data_len = HCI_MAX_AD_LENGTH;
6986 rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH;
6987 rp->max_instances = HCI_MAX_ADV_INSTANCES;
6988
6989 if (instance) {
6990 i = 0;
6991 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
6992 if (i >= hdev->adv_instance_cnt)
6993 break;
6994
6995 rp->instance[i] = adv_instance->instance;
6996 i++;
6997 }
6998 rp->num_instances = hdev->adv_instance_cnt;
6999 } else {
7000 rp->num_instances = 0;
7001 }
7002
7003 hci_dev_unlock(hdev);
7004
7005 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
7006 MGMT_STATUS_SUCCESS, rp, rp_len);
7007
7008 kfree(rp);
7009
7010 return err;
7011 }
7012
7013 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data,
7014 u8 len, bool is_adv_data)
7015 {
7016 u8 max_len = HCI_MAX_AD_LENGTH;
7017 int i, cur_len;
7018 bool flags_managed = false;
7019 bool tx_power_managed = false;
7020 u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV |
7021 MGMT_ADV_FLAG_MANAGED_FLAGS;
7022
7023 if (is_adv_data && (adv_flags & flags_params)) {
7024 flags_managed = true;
7025 max_len -= 3;
7026 }
7027
7028 if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) {
7029 tx_power_managed = true;
7030 max_len -= 3;
7031 }
7032
7033 if (len > max_len)
7034 return false;
7035
7036 /* Make sure that the data is correctly formatted. */
7037 for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) {
7038 cur_len = data[i];
7039
7040 if (flags_managed && data[i + 1] == EIR_FLAGS)
7041 return false;
7042
7043 if (tx_power_managed && data[i + 1] == EIR_TX_POWER)
7044 return false;
7045
7046 /* If the current field length would exceed the total data
7047 * length, then it's invalid.
7048 */
7049 if (i + cur_len >= len)
7050 return false;
7051 }
7052
7053 return true;
7054 }
7055
7056 static void add_advertising_complete(struct hci_dev *hdev, u8 status,
7057 u16 opcode)
7058 {
7059 struct mgmt_pending_cmd *cmd;
7060 struct mgmt_cp_add_advertising *cp;
7061 struct mgmt_rp_add_advertising rp;
7062 struct adv_info *adv_instance, *n;
7063 u8 instance;
7064
7065 BT_DBG("status %d", status);
7066
7067 hci_dev_lock(hdev);
7068
7069 cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev);
7070
7071 if (status)
7072 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
7073
7074 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
7075 if (!adv_instance->pending)
7076 continue;
7077
7078 if (!status) {
7079 adv_instance->pending = false;
7080 continue;
7081 }
7082
7083 instance = adv_instance->instance;
7084
7085 if (hdev->cur_adv_instance == instance)
7086 cancel_adv_timeout(hdev);
7087
7088 hci_remove_adv_instance(hdev, instance);
7089 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance);
7090 }
7091
7092 if (!cmd)
7093 goto unlock;
7094
7095 cp = cmd->param;
7096 rp.instance = cp->instance;
7097
7098 if (status)
7099 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
7100 mgmt_status(status));
7101 else
7102 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
7103 mgmt_status(status), &rp, sizeof(rp));
7104
7105 mgmt_pending_remove(cmd);
7106
7107 unlock:
7108 hci_dev_unlock(hdev);
7109 }
7110
7111 void mgmt_adv_timeout_expired(struct hci_dev *hdev)
7112 {
7113 u8 instance;
7114 struct hci_request req;
7115
7116 hdev->adv_instance_timeout = 0;
7117
7118 instance = get_current_adv_instance(hdev);
7119 if (instance == 0x00)
7120 return;
7121
7122 hci_dev_lock(hdev);
7123 hci_req_init(&req, hdev);
7124
7125 clear_adv_instance(hdev, &req, instance, false);
7126
7127 if (list_empty(&hdev->adv_instances))
7128 disable_advertising(&req);
7129
7130 if (!skb_queue_empty(&req.cmd_q))
7131 hci_req_run(&req, NULL);
7132
7133 hci_dev_unlock(hdev);
7134 }
7135
7136 static int add_advertising(struct sock *sk, struct hci_dev *hdev,
7137 void *data, u16 data_len)
7138 {
7139 struct mgmt_cp_add_advertising *cp = data;
7140 struct mgmt_rp_add_advertising rp;
7141 u32 flags;
7142 u32 supported_flags;
7143 u8 status;
7144 u16 timeout, duration;
7145 unsigned int prev_instance_cnt = hdev->adv_instance_cnt;
7146 u8 schedule_instance = 0;
7147 struct adv_info *next_instance;
7148 int err;
7149 struct mgmt_pending_cmd *cmd;
7150 struct hci_request req;
7151
7152 BT_DBG("%s", hdev->name);
7153
7154 status = mgmt_le_support(hdev);
7155 if (status)
7156 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7157 status);
7158
7159 flags = __le32_to_cpu(cp->flags);
7160 timeout = __le16_to_cpu(cp->timeout);
7161 duration = __le16_to_cpu(cp->duration);
7162
7163 /* The current implementation only supports a subset of the specified
7164 * flags.
7165 */
7166 supported_flags = get_supported_adv_flags(hdev);
7167 if (flags & ~supported_flags)
7168 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7169 MGMT_STATUS_INVALID_PARAMS);
7170
7171 hci_dev_lock(hdev);
7172
7173 if (timeout && !hdev_is_powered(hdev)) {
7174 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7175 MGMT_STATUS_REJECTED);
7176 goto unlock;
7177 }
7178
7179 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7180 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7181 pending_find(MGMT_OP_SET_LE, hdev)) {
7182 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7183 MGMT_STATUS_BUSY);
7184 goto unlock;
7185 }
7186
7187 if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) ||
7188 !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len,
7189 cp->scan_rsp_len, false)) {
7190 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7191 MGMT_STATUS_INVALID_PARAMS);
7192 goto unlock;
7193 }
7194
7195 err = hci_add_adv_instance(hdev, cp->instance, flags,
7196 cp->adv_data_len, cp->data,
7197 cp->scan_rsp_len,
7198 cp->data + cp->adv_data_len,
7199 timeout, duration);
7200 if (err < 0) {
7201 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7202 MGMT_STATUS_FAILED);
7203 goto unlock;
7204 }
7205
7206 /* Only trigger an advertising added event if a new instance was
7207 * actually added.
7208 */
7209 if (hdev->adv_instance_cnt > prev_instance_cnt)
7210 advertising_added(sk, hdev, cp->instance);
7211
7212 hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE);
7213
7214 if (hdev->cur_adv_instance == cp->instance) {
7215 /* If the currently advertised instance is being changed then
7216 * cancel the current advertising and schedule the next
7217 * instance. If there is only one instance then the overridden
7218 * advertising data will be visible right away.
7219 */
7220 cancel_adv_timeout(hdev);
7221
7222 next_instance = hci_get_next_instance(hdev, cp->instance);
7223 if (next_instance)
7224 schedule_instance = next_instance->instance;
7225 } else if (!hdev->adv_instance_timeout) {
7226 /* Immediately advertise the new instance if no other
7227 * instance is currently being advertised.
7228 */
7229 schedule_instance = cp->instance;
7230 }
7231
7232 /* If the HCI_ADVERTISING flag is set or the device isn't powered or
7233 * there is no instance to be advertised then we have no HCI
7234 * communication to make. Simply return.
7235 */
7236 if (!hdev_is_powered(hdev) ||
7237 hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7238 !schedule_instance) {
7239 rp.instance = cp->instance;
7240 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7241 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7242 goto unlock;
7243 }
7244
7245 /* We're good to go, update advertising data, parameters, and start
7246 * advertising.
7247 */
7248 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data,
7249 data_len);
7250 if (!cmd) {
7251 err = -ENOMEM;
7252 goto unlock;
7253 }
7254
7255 hci_req_init(&req, hdev);
7256
7257 err = schedule_adv_instance(&req, schedule_instance, true);
7258
7259 if (!err)
7260 err = hci_req_run(&req, add_advertising_complete);
7261
7262 if (err < 0)
7263 mgmt_pending_remove(cmd);
7264
7265 unlock:
7266 hci_dev_unlock(hdev);
7267
7268 return err;
7269 }
7270
7271 static void remove_advertising_complete(struct hci_dev *hdev, u8 status,
7272 u16 opcode)
7273 {
7274 struct mgmt_pending_cmd *cmd;
7275 struct mgmt_cp_remove_advertising *cp;
7276 struct mgmt_rp_remove_advertising rp;
7277
7278 BT_DBG("status %d", status);
7279
7280 hci_dev_lock(hdev);
7281
7282 /* A failure status here only means that we failed to disable
7283 * advertising. Otherwise, the advertising instance has been removed,
7284 * so report success.
7285 */
7286 cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev);
7287 if (!cmd)
7288 goto unlock;
7289
7290 cp = cmd->param;
7291 rp.instance = cp->instance;
7292
7293 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS,
7294 &rp, sizeof(rp));
7295 mgmt_pending_remove(cmd);
7296
7297 unlock:
7298 hci_dev_unlock(hdev);
7299 }
7300
7301 static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
7302 void *data, u16 data_len)
7303 {
7304 struct mgmt_cp_remove_advertising *cp = data;
7305 struct mgmt_rp_remove_advertising rp;
7306 struct mgmt_pending_cmd *cmd;
7307 struct hci_request req;
7308 int err;
7309
7310 BT_DBG("%s", hdev->name);
7311
7312 hci_dev_lock(hdev);
7313
7314 if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) {
7315 err = mgmt_cmd_status(sk, hdev->id,
7316 MGMT_OP_REMOVE_ADVERTISING,
7317 MGMT_STATUS_INVALID_PARAMS);
7318 goto unlock;
7319 }
7320
7321 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7322 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7323 pending_find(MGMT_OP_SET_LE, hdev)) {
7324 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7325 MGMT_STATUS_BUSY);
7326 goto unlock;
7327 }
7328
7329 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) {
7330 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7331 MGMT_STATUS_INVALID_PARAMS);
7332 goto unlock;
7333 }
7334
7335 hci_req_init(&req, hdev);
7336
7337 clear_adv_instance(hdev, &req, cp->instance, true);
7338
7339 if (list_empty(&hdev->adv_instances))
7340 disable_advertising(&req);
7341
7342 /* If no HCI commands have been collected so far or the HCI_ADVERTISING
7343 * flag is set or the device isn't powered then we have no HCI
7344 * communication to make. Simply return.
7345 */
7346 if (skb_queue_empty(&req.cmd_q) ||
7347 !hdev_is_powered(hdev) ||
7348 hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
7349 rp.instance = cp->instance;
7350 err = mgmt_cmd_complete(sk, hdev->id,
7351 MGMT_OP_REMOVE_ADVERTISING,
7352 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7353 goto unlock;
7354 }
7355
7356 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data,
7357 data_len);
7358 if (!cmd) {
7359 err = -ENOMEM;
7360 goto unlock;
7361 }
7362
7363 err = hci_req_run(&req, remove_advertising_complete);
7364 if (err < 0)
7365 mgmt_pending_remove(cmd);
7366
7367 unlock:
7368 hci_dev_unlock(hdev);
7369
7370 return err;
7371 }
7372
7373 static const struct hci_mgmt_handler mgmt_handlers[] = {
7374 { NULL }, /* 0x0000 (no command) */
7375 { read_version, MGMT_READ_VERSION_SIZE,
7376 HCI_MGMT_NO_HDEV |
7377 HCI_MGMT_UNTRUSTED },
7378 { read_commands, MGMT_READ_COMMANDS_SIZE,
7379 HCI_MGMT_NO_HDEV |
7380 HCI_MGMT_UNTRUSTED },
7381 { read_index_list, MGMT_READ_INDEX_LIST_SIZE,
7382 HCI_MGMT_NO_HDEV |
7383 HCI_MGMT_UNTRUSTED },
7384 { read_controller_info, MGMT_READ_INFO_SIZE,
7385 HCI_MGMT_UNTRUSTED },
7386 { set_powered, MGMT_SETTING_SIZE },
7387 { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE },
7388 { set_connectable, MGMT_SETTING_SIZE },
7389 { set_fast_connectable, MGMT_SETTING_SIZE },
7390 { set_bondable, MGMT_SETTING_SIZE },
7391 { set_link_security, MGMT_SETTING_SIZE },
7392 { set_ssp, MGMT_SETTING_SIZE },
7393 { set_hs, MGMT_SETTING_SIZE },
7394 { set_le, MGMT_SETTING_SIZE },
7395 { set_dev_class, MGMT_SET_DEV_CLASS_SIZE },
7396 { set_local_name, MGMT_SET_LOCAL_NAME_SIZE },
7397 { add_uuid, MGMT_ADD_UUID_SIZE },
7398 { remove_uuid, MGMT_REMOVE_UUID_SIZE },
7399 { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE,
7400 HCI_MGMT_VAR_LEN },
7401 { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE,
7402 HCI_MGMT_VAR_LEN },
7403 { disconnect, MGMT_DISCONNECT_SIZE },
7404 { get_connections, MGMT_GET_CONNECTIONS_SIZE },
7405 { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE },
7406 { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE },
7407 { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE },
7408 { pair_device, MGMT_PAIR_DEVICE_SIZE },
7409 { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE },
7410 { unpair_device, MGMT_UNPAIR_DEVICE_SIZE },
7411 { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE },
7412 { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
7413 { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE },
7414 { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
7415 { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE },
7416 { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE,
7417 HCI_MGMT_VAR_LEN },
7418 { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
7419 { start_discovery, MGMT_START_DISCOVERY_SIZE },
7420 { stop_discovery, MGMT_STOP_DISCOVERY_SIZE },
7421 { confirm_name, MGMT_CONFIRM_NAME_SIZE },
7422 { block_device, MGMT_BLOCK_DEVICE_SIZE },
7423 { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE },
7424 { set_device_id, MGMT_SET_DEVICE_ID_SIZE },
7425 { set_advertising, MGMT_SETTING_SIZE },
7426 { set_bredr, MGMT_SETTING_SIZE },
7427 { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE },
7428 { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE },
7429 { set_secure_conn, MGMT_SETTING_SIZE },
7430 { set_debug_keys, MGMT_SETTING_SIZE },
7431 { set_privacy, MGMT_SET_PRIVACY_SIZE },
7432 { load_irks, MGMT_LOAD_IRKS_SIZE,
7433 HCI_MGMT_VAR_LEN },
7434 { get_conn_info, MGMT_GET_CONN_INFO_SIZE },
7435 { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE },
7436 { add_device, MGMT_ADD_DEVICE_SIZE },
7437 { remove_device, MGMT_REMOVE_DEVICE_SIZE },
7438 { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE,
7439 HCI_MGMT_VAR_LEN },
7440 { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE,
7441 HCI_MGMT_NO_HDEV |
7442 HCI_MGMT_UNTRUSTED },
7443 { read_config_info, MGMT_READ_CONFIG_INFO_SIZE,
7444 HCI_MGMT_UNCONFIGURED |
7445 HCI_MGMT_UNTRUSTED },
7446 { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE,
7447 HCI_MGMT_UNCONFIGURED },
7448 { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE,
7449 HCI_MGMT_UNCONFIGURED },
7450 { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE,
7451 HCI_MGMT_VAR_LEN },
7452 { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE },
7453 { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE,
7454 HCI_MGMT_NO_HDEV |
7455 HCI_MGMT_UNTRUSTED },
7456 { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE },
7457 { add_advertising, MGMT_ADD_ADVERTISING_SIZE,
7458 HCI_MGMT_VAR_LEN },
7459 { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE },
7460 };
7461
7462 void mgmt_index_added(struct hci_dev *hdev)
7463 {
7464 struct mgmt_ev_ext_index ev;
7465
7466 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7467 return;
7468
7469 switch (hdev->dev_type) {
7470 case HCI_BREDR:
7471 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7472 mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev,
7473 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7474 ev.type = 0x01;
7475 } else {
7476 mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0,
7477 HCI_MGMT_INDEX_EVENTS);
7478 ev.type = 0x00;
7479 }
7480 break;
7481 case HCI_AMP:
7482 ev.type = 0x02;
7483 break;
7484 default:
7485 return;
7486 }
7487
7488 ev.bus = hdev->bus;
7489
7490 mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev),
7491 HCI_MGMT_EXT_INDEX_EVENTS);
7492 }
7493
7494 void mgmt_index_removed(struct hci_dev *hdev)
7495 {
7496 struct mgmt_ev_ext_index ev;
7497 u8 status = MGMT_STATUS_INVALID_INDEX;
7498
7499 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7500 return;
7501
7502 switch (hdev->dev_type) {
7503 case HCI_BREDR:
7504 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7505
7506 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7507 mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev,
7508 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7509 ev.type = 0x01;
7510 } else {
7511 mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0,
7512 HCI_MGMT_INDEX_EVENTS);
7513 ev.type = 0x00;
7514 }
7515 break;
7516 case HCI_AMP:
7517 ev.type = 0x02;
7518 break;
7519 default:
7520 return;
7521 }
7522
7523 ev.bus = hdev->bus;
7524
7525 mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev),
7526 HCI_MGMT_EXT_INDEX_EVENTS);
7527 }
7528
7529 /* This function requires the caller holds hdev->lock */
7530 static void restart_le_actions(struct hci_request *req)
7531 {
7532 struct hci_dev *hdev = req->hdev;
7533 struct hci_conn_params *p;
7534
7535 list_for_each_entry(p, &hdev->le_conn_params, list) {
7536 /* Needed for AUTO_OFF case where might not "really"
7537 * have been powered off.
7538 */
7539 list_del_init(&p->action);
7540
7541 switch (p->auto_connect) {
7542 case HCI_AUTO_CONN_DIRECT:
7543 case HCI_AUTO_CONN_ALWAYS:
7544 list_add(&p->action, &hdev->pend_le_conns);
7545 break;
7546 case HCI_AUTO_CONN_REPORT:
7547 list_add(&p->action, &hdev->pend_le_reports);
7548 break;
7549 default:
7550 break;
7551 }
7552 }
7553
7554 __hci_update_background_scan(req);
7555 }
7556
7557 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7558 {
7559 struct cmd_lookup match = { NULL, hdev };
7560
7561 BT_DBG("status 0x%02x", status);
7562
7563 if (!status) {
7564 /* Register the available SMP channels (BR/EDR and LE) only
7565 * when successfully powering on the controller. This late
7566 * registration is required so that LE SMP can clearly
7567 * decide if the public address or static address is used.
7568 */
7569 smp_register(hdev);
7570 }
7571
7572 hci_dev_lock(hdev);
7573
7574 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7575
7576 new_settings(hdev, match.sk);
7577
7578 hci_dev_unlock(hdev);
7579
7580 if (match.sk)
7581 sock_put(match.sk);
7582 }
7583
7584 static int powered_update_hci(struct hci_dev *hdev)
7585 {
7586 struct hci_request req;
7587 struct adv_info *adv_instance;
7588 u8 link_sec;
7589
7590 hci_req_init(&req, hdev);
7591
7592 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
7593 !lmp_host_ssp_capable(hdev)) {
7594 u8 mode = 0x01;
7595
7596 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
7597
7598 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
7599 u8 support = 0x01;
7600
7601 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
7602 sizeof(support), &support);
7603 }
7604 }
7605
7606 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7607 lmp_bredr_capable(hdev)) {
7608 struct hci_cp_write_le_host_supported cp;
7609
7610 cp.le = 0x01;
7611 cp.simul = 0x00;
7612
7613 /* Check first if we already have the right
7614 * host state (host features set)
7615 */
7616 if (cp.le != lmp_host_le_capable(hdev) ||
7617 cp.simul != lmp_host_le_br_capable(hdev))
7618 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
7619 sizeof(cp), &cp);
7620 }
7621
7622 if (lmp_le_capable(hdev)) {
7623 /* Make sure the controller has a good default for
7624 * advertising data. This also applies to the case
7625 * where BR/EDR was toggled during the AUTO_OFF phase.
7626 */
7627 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7628 (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7629 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) {
7630 update_adv_data(&req);
7631 update_scan_rsp_data(&req);
7632 }
7633
7634 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7635 hdev->cur_adv_instance == 0x00 &&
7636 !list_empty(&hdev->adv_instances)) {
7637 adv_instance = list_first_entry(&hdev->adv_instances,
7638 struct adv_info, list);
7639 hdev->cur_adv_instance = adv_instance->instance;
7640 }
7641
7642 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7643 enable_advertising(&req);
7644 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7645 hdev->cur_adv_instance)
7646 schedule_adv_instance(&req, hdev->cur_adv_instance,
7647 true);
7648
7649 restart_le_actions(&req);
7650 }
7651
7652 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
7653 if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
7654 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
7655 sizeof(link_sec), &link_sec);
7656
7657 if (lmp_bredr_capable(hdev)) {
7658 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
7659 write_fast_connectable(&req, true);
7660 else
7661 write_fast_connectable(&req, false);
7662 __hci_update_page_scan(&req);
7663 update_class(&req);
7664 update_name(&req);
7665 update_eir(&req);
7666 }
7667
7668 return hci_req_run(&req, powered_complete);
7669 }
7670
7671 int mgmt_powered(struct hci_dev *hdev, u8 powered)
7672 {
7673 struct cmd_lookup match = { NULL, hdev };
7674 u8 status, zero_cod[] = { 0, 0, 0 };
7675 int err;
7676
7677 if (!hci_dev_test_flag(hdev, HCI_MGMT))
7678 return 0;
7679
7680 if (powered) {
7681 if (powered_update_hci(hdev) == 0)
7682 return 0;
7683
7684 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
7685 &match);
7686 goto new_settings;
7687 }
7688
7689 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7690
7691 /* If the power off is because of hdev unregistration let
7692 * use the appropriate INVALID_INDEX status. Otherwise use
7693 * NOT_POWERED. We cover both scenarios here since later in
7694 * mgmt_index_removed() any hci_conn callbacks will have already
7695 * been triggered, potentially causing misleading DISCONNECTED
7696 * status responses.
7697 */
7698 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
7699 status = MGMT_STATUS_INVALID_INDEX;
7700 else
7701 status = MGMT_STATUS_NOT_POWERED;
7702
7703 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7704
7705 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
7706 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
7707 zero_cod, sizeof(zero_cod), NULL);
7708
7709 new_settings:
7710 err = new_settings(hdev, match.sk);
7711
7712 if (match.sk)
7713 sock_put(match.sk);
7714
7715 return err;
7716 }
7717
7718 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
7719 {
7720 struct mgmt_pending_cmd *cmd;
7721 u8 status;
7722
7723 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7724 if (!cmd)
7725 return;
7726
7727 if (err == -ERFKILL)
7728 status = MGMT_STATUS_RFKILLED;
7729 else
7730 status = MGMT_STATUS_FAILED;
7731
7732 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
7733
7734 mgmt_pending_remove(cmd);
7735 }
7736
7737 void mgmt_discoverable_timeout(struct hci_dev *hdev)
7738 {
7739 struct hci_request req;
7740
7741 hci_dev_lock(hdev);
7742
7743 /* When discoverable timeout triggers, then just make sure
7744 * the limited discoverable flag is cleared. Even in the case
7745 * of a timeout triggered from general discoverable, it is
7746 * safe to unconditionally clear the flag.
7747 */
7748 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
7749 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
7750
7751 hci_req_init(&req, hdev);
7752 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
7753 u8 scan = SCAN_PAGE;
7754 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
7755 sizeof(scan), &scan);
7756 }
7757 update_class(&req);
7758
7759 /* Advertising instances don't use the global discoverable setting, so
7760 * only update AD if advertising was enabled using Set Advertising.
7761 */
7762 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7763 update_adv_data(&req);
7764
7765 hci_req_run(&req, NULL);
7766
7767 hdev->discov_timeout = 0;
7768
7769 new_settings(hdev, NULL);
7770
7771 hci_dev_unlock(hdev);
7772 }
7773
7774 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
7775 bool persistent)
7776 {
7777 struct mgmt_ev_new_link_key ev;
7778
7779 memset(&ev, 0, sizeof(ev));
7780
7781 ev.store_hint = persistent;
7782 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7783 ev.key.addr.type = BDADDR_BREDR;
7784 ev.key.type = key->type;
7785 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
7786 ev.key.pin_len = key->pin_len;
7787
7788 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
7789 }
7790
7791 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
7792 {
7793 switch (ltk->type) {
7794 case SMP_LTK:
7795 case SMP_LTK_SLAVE:
7796 if (ltk->authenticated)
7797 return MGMT_LTK_AUTHENTICATED;
7798 return MGMT_LTK_UNAUTHENTICATED;
7799 case SMP_LTK_P256:
7800 if (ltk->authenticated)
7801 return MGMT_LTK_P256_AUTH;
7802 return MGMT_LTK_P256_UNAUTH;
7803 case SMP_LTK_P256_DEBUG:
7804 return MGMT_LTK_P256_DEBUG;
7805 }
7806
7807 return MGMT_LTK_UNAUTHENTICATED;
7808 }
7809
7810 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
7811 {
7812 struct mgmt_ev_new_long_term_key ev;
7813
7814 memset(&ev, 0, sizeof(ev));
7815
7816 /* Devices using resolvable or non-resolvable random addresses
7817 * without providing an identity resolving key don't require
7818 * to store long term keys. Their addresses will change the
7819 * next time around.
7820 *
7821 * Only when a remote device provides an identity address
7822 * make sure the long term key is stored. If the remote
7823 * identity is known, the long term keys are internally
7824 * mapped to the identity address. So allow static random
7825 * and public addresses here.
7826 */
7827 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7828 (key->bdaddr.b[5] & 0xc0) != 0xc0)
7829 ev.store_hint = 0x00;
7830 else
7831 ev.store_hint = persistent;
7832
7833 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7834 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
7835 ev.key.type = mgmt_ltk_type(key);
7836 ev.key.enc_size = key->enc_size;
7837 ev.key.ediv = key->ediv;
7838 ev.key.rand = key->rand;
7839
7840 if (key->type == SMP_LTK)
7841 ev.key.master = 1;
7842
7843 /* Make sure we copy only the significant bytes based on the
7844 * encryption key size, and set the rest of the value to zeroes.
7845 */
7846 memcpy(ev.key.val, key->val, sizeof(key->enc_size));
7847 memset(ev.key.val + key->enc_size, 0,
7848 sizeof(ev.key.val) - key->enc_size);
7849
7850 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
7851 }
7852
7853 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk)
7854 {
7855 struct mgmt_ev_new_irk ev;
7856
7857 memset(&ev, 0, sizeof(ev));
7858
7859 /* For identity resolving keys from devices that are already
7860 * using a public address or static random address, do not
7861 * ask for storing this key. The identity resolving key really
7862 * is only mandatory for devices using resolvable random
7863 * addresses.
7864 *
7865 * Storing all identity resolving keys has the downside that
7866 * they will be also loaded on next boot of they system. More
7867 * identity resolving keys, means more time during scanning is
7868 * needed to actually resolve these addresses.
7869 */
7870 if (bacmp(&irk->rpa, BDADDR_ANY))
7871 ev.store_hint = 0x01;
7872 else
7873 ev.store_hint = 0x00;
7874
7875 bacpy(&ev.rpa, &irk->rpa);
7876 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
7877 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
7878 memcpy(ev.irk.val, irk->val, sizeof(irk->val));
7879
7880 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
7881 }
7882
7883 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
7884 bool persistent)
7885 {
7886 struct mgmt_ev_new_csrk ev;
7887
7888 memset(&ev, 0, sizeof(ev));
7889
7890 /* Devices using resolvable or non-resolvable random addresses
7891 * without providing an identity resolving key don't require
7892 * to store signature resolving keys. Their addresses will change
7893 * the next time around.
7894 *
7895 * Only when a remote device provides an identity address
7896 * make sure the signature resolving key is stored. So allow
7897 * static random and public addresses here.
7898 */
7899 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7900 (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
7901 ev.store_hint = 0x00;
7902 else
7903 ev.store_hint = persistent;
7904
7905 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
7906 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
7907 ev.key.type = csrk->type;
7908 memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
7909
7910 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
7911 }
7912
7913 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
7914 u8 bdaddr_type, u8 store_hint, u16 min_interval,
7915 u16 max_interval, u16 latency, u16 timeout)
7916 {
7917 struct mgmt_ev_new_conn_param ev;
7918
7919 if (!hci_is_identity_address(bdaddr, bdaddr_type))
7920 return;
7921
7922 memset(&ev, 0, sizeof(ev));
7923 bacpy(&ev.addr.bdaddr, bdaddr);
7924 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
7925 ev.store_hint = store_hint;
7926 ev.min_interval = cpu_to_le16(min_interval);
7927 ev.max_interval = cpu_to_le16(max_interval);
7928 ev.latency = cpu_to_le16(latency);
7929 ev.timeout = cpu_to_le16(timeout);
7930
7931 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
7932 }
7933
7934 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
7935 u32 flags, u8 *name, u8 name_len)
7936 {
7937 char buf[512];
7938 struct mgmt_ev_device_connected *ev = (void *) buf;
7939 u16 eir_len = 0;
7940
7941 bacpy(&ev->addr.bdaddr, &conn->dst);
7942 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
7943
7944 ev->flags = __cpu_to_le32(flags);
7945
7946 /* We must ensure that the EIR Data fields are ordered and
7947 * unique. Keep it simple for now and avoid the problem by not
7948 * adding any BR/EDR data to the LE adv.
7949 */
7950 if (conn->le_adv_data_len > 0) {
7951 memcpy(&ev->eir[eir_len],
7952 conn->le_adv_data, conn->le_adv_data_len);
7953 eir_len = conn->le_adv_data_len;
7954 } else {
7955 if (name_len > 0)
7956 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
7957 name, name_len);
7958
7959 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
7960 eir_len = eir_append_data(ev->eir, eir_len,
7961 EIR_CLASS_OF_DEV,
7962 conn->dev_class, 3);
7963 }
7964
7965 ev->eir_len = cpu_to_le16(eir_len);
7966
7967 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
7968 sizeof(*ev) + eir_len, NULL);
7969 }
7970
7971 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data)
7972 {
7973 struct sock **sk = data;
7974
7975 cmd->cmd_complete(cmd, 0);
7976
7977 *sk = cmd->sk;
7978 sock_hold(*sk);
7979
7980 mgmt_pending_remove(cmd);
7981 }
7982
7983 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data)
7984 {
7985 struct hci_dev *hdev = data;
7986 struct mgmt_cp_unpair_device *cp = cmd->param;
7987
7988 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
7989
7990 cmd->cmd_complete(cmd, 0);
7991 mgmt_pending_remove(cmd);
7992 }
7993
7994 bool mgmt_powering_down(struct hci_dev *hdev)
7995 {
7996 struct mgmt_pending_cmd *cmd;
7997 struct mgmt_mode *cp;
7998
7999 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
8000 if (!cmd)
8001 return false;
8002
8003 cp = cmd->param;
8004 if (!cp->val)
8005 return true;
8006
8007 return false;
8008 }
8009
8010 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
8011 u8 link_type, u8 addr_type, u8 reason,
8012 bool mgmt_connected)
8013 {
8014 struct mgmt_ev_device_disconnected ev;
8015 struct sock *sk = NULL;
8016
8017 /* The connection is still in hci_conn_hash so test for 1
8018 * instead of 0 to know if this is the last one.
8019 */
8020 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8021 cancel_delayed_work(&hdev->power_off);
8022 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8023 }
8024
8025 if (!mgmt_connected)
8026 return;
8027
8028 if (link_type != ACL_LINK && link_type != LE_LINK)
8029 return;
8030
8031 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
8032
8033 bacpy(&ev.addr.bdaddr, bdaddr);
8034 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8035 ev.reason = reason;
8036
8037 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
8038
8039 if (sk)
8040 sock_put(sk);
8041
8042 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8043 hdev);
8044 }
8045
8046 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
8047 u8 link_type, u8 addr_type, u8 status)
8048 {
8049 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
8050 struct mgmt_cp_disconnect *cp;
8051 struct mgmt_pending_cmd *cmd;
8052
8053 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8054 hdev);
8055
8056 cmd = pending_find(MGMT_OP_DISCONNECT, hdev);
8057 if (!cmd)
8058 return;
8059
8060 cp = cmd->param;
8061
8062 if (bacmp(bdaddr, &cp->addr.bdaddr))
8063 return;
8064
8065 if (cp->addr.type != bdaddr_type)
8066 return;
8067
8068 cmd->cmd_complete(cmd, mgmt_status(status));
8069 mgmt_pending_remove(cmd);
8070 }
8071
8072 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8073 u8 addr_type, u8 status)
8074 {
8075 struct mgmt_ev_connect_failed ev;
8076
8077 /* The connection is still in hci_conn_hash so test for 1
8078 * instead of 0 to know if this is the last one.
8079 */
8080 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8081 cancel_delayed_work(&hdev->power_off);
8082 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8083 }
8084
8085 bacpy(&ev.addr.bdaddr, bdaddr);
8086 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8087 ev.status = mgmt_status(status);
8088
8089 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
8090 }
8091
8092 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
8093 {
8094 struct mgmt_ev_pin_code_request ev;
8095
8096 bacpy(&ev.addr.bdaddr, bdaddr);
8097 ev.addr.type = BDADDR_BREDR;
8098 ev.secure = secure;
8099
8100 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
8101 }
8102
8103 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8104 u8 status)
8105 {
8106 struct mgmt_pending_cmd *cmd;
8107
8108 cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
8109 if (!cmd)
8110 return;
8111
8112 cmd->cmd_complete(cmd, mgmt_status(status));
8113 mgmt_pending_remove(cmd);
8114 }
8115
8116 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8117 u8 status)
8118 {
8119 struct mgmt_pending_cmd *cmd;
8120
8121 cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
8122 if (!cmd)
8123 return;
8124
8125 cmd->cmd_complete(cmd, mgmt_status(status));
8126 mgmt_pending_remove(cmd);
8127 }
8128
8129 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8130 u8 link_type, u8 addr_type, u32 value,
8131 u8 confirm_hint)
8132 {
8133 struct mgmt_ev_user_confirm_request ev;
8134
8135 BT_DBG("%s", hdev->name);
8136
8137 bacpy(&ev.addr.bdaddr, bdaddr);
8138 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8139 ev.confirm_hint = confirm_hint;
8140 ev.value = cpu_to_le32(value);
8141
8142 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
8143 NULL);
8144 }
8145
8146 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8147 u8 link_type, u8 addr_type)
8148 {
8149 struct mgmt_ev_user_passkey_request ev;
8150
8151 BT_DBG("%s", hdev->name);
8152
8153 bacpy(&ev.addr.bdaddr, bdaddr);
8154 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8155
8156 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
8157 NULL);
8158 }
8159
8160 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8161 u8 link_type, u8 addr_type, u8 status,
8162 u8 opcode)
8163 {
8164 struct mgmt_pending_cmd *cmd;
8165
8166 cmd = pending_find(opcode, hdev);
8167 if (!cmd)
8168 return -ENOENT;
8169
8170 cmd->cmd_complete(cmd, mgmt_status(status));
8171 mgmt_pending_remove(cmd);
8172
8173 return 0;
8174 }
8175
8176 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8177 u8 link_type, u8 addr_type, u8 status)
8178 {
8179 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8180 status, MGMT_OP_USER_CONFIRM_REPLY);
8181 }
8182
8183 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8184 u8 link_type, u8 addr_type, u8 status)
8185 {
8186 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8187 status,
8188 MGMT_OP_USER_CONFIRM_NEG_REPLY);
8189 }
8190
8191 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8192 u8 link_type, u8 addr_type, u8 status)
8193 {
8194 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8195 status, MGMT_OP_USER_PASSKEY_REPLY);
8196 }
8197
8198 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8199 u8 link_type, u8 addr_type, u8 status)
8200 {
8201 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8202 status,
8203 MGMT_OP_USER_PASSKEY_NEG_REPLY);
8204 }
8205
8206 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
8207 u8 link_type, u8 addr_type, u32 passkey,
8208 u8 entered)
8209 {
8210 struct mgmt_ev_passkey_notify ev;
8211
8212 BT_DBG("%s", hdev->name);
8213
8214 bacpy(&ev.addr.bdaddr, bdaddr);
8215 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8216 ev.passkey = __cpu_to_le32(passkey);
8217 ev.entered = entered;
8218
8219 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
8220 }
8221
8222 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
8223 {
8224 struct mgmt_ev_auth_failed ev;
8225 struct mgmt_pending_cmd *cmd;
8226 u8 status = mgmt_status(hci_status);
8227
8228 bacpy(&ev.addr.bdaddr, &conn->dst);
8229 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
8230 ev.status = status;
8231
8232 cmd = find_pairing(conn);
8233
8234 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
8235 cmd ? cmd->sk : NULL);
8236
8237 if (cmd) {
8238 cmd->cmd_complete(cmd, status);
8239 mgmt_pending_remove(cmd);
8240 }
8241 }
8242
8243 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
8244 {
8245 struct cmd_lookup match = { NULL, hdev };
8246 bool changed;
8247
8248 if (status) {
8249 u8 mgmt_err = mgmt_status(status);
8250 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
8251 cmd_status_rsp, &mgmt_err);
8252 return;
8253 }
8254
8255 if (test_bit(HCI_AUTH, &hdev->flags))
8256 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
8257 else
8258 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
8259
8260 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
8261 &match);
8262
8263 if (changed)
8264 new_settings(hdev, match.sk);
8265
8266 if (match.sk)
8267 sock_put(match.sk);
8268 }
8269
8270 static void clear_eir(struct hci_request *req)
8271 {
8272 struct hci_dev *hdev = req->hdev;
8273 struct hci_cp_write_eir cp;
8274
8275 if (!lmp_ext_inq_capable(hdev))
8276 return;
8277
8278 memset(hdev->eir, 0, sizeof(hdev->eir));
8279
8280 memset(&cp, 0, sizeof(cp));
8281
8282 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
8283 }
8284
8285 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
8286 {
8287 struct cmd_lookup match = { NULL, hdev };
8288 struct hci_request req;
8289 bool changed = false;
8290
8291 if (status) {
8292 u8 mgmt_err = mgmt_status(status);
8293
8294 if (enable && hci_dev_test_and_clear_flag(hdev,
8295 HCI_SSP_ENABLED)) {
8296 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8297 new_settings(hdev, NULL);
8298 }
8299
8300 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
8301 &mgmt_err);
8302 return;
8303 }
8304
8305 if (enable) {
8306 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
8307 } else {
8308 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
8309 if (!changed)
8310 changed = hci_dev_test_and_clear_flag(hdev,
8311 HCI_HS_ENABLED);
8312 else
8313 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8314 }
8315
8316 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
8317
8318 if (changed)
8319 new_settings(hdev, match.sk);
8320
8321 if (match.sk)
8322 sock_put(match.sk);
8323
8324 hci_req_init(&req, hdev);
8325
8326 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
8327 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
8328 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
8329 sizeof(enable), &enable);
8330 update_eir(&req);
8331 } else {
8332 clear_eir(&req);
8333 }
8334
8335 hci_req_run(&req, NULL);
8336 }
8337
8338 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data)
8339 {
8340 struct cmd_lookup *match = data;
8341
8342 if (match->sk == NULL) {
8343 match->sk = cmd->sk;
8344 sock_hold(match->sk);
8345 }
8346 }
8347
8348 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
8349 u8 status)
8350 {
8351 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
8352
8353 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
8354 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
8355 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
8356
8357 if (!status)
8358 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
8359 dev_class, 3, NULL);
8360
8361 if (match.sk)
8362 sock_put(match.sk);
8363 }
8364
8365 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
8366 {
8367 struct mgmt_cp_set_local_name ev;
8368 struct mgmt_pending_cmd *cmd;
8369
8370 if (status)
8371 return;
8372
8373 memset(&ev, 0, sizeof(ev));
8374 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
8375 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
8376
8377 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
8378 if (!cmd) {
8379 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
8380
8381 /* If this is a HCI command related to powering on the
8382 * HCI dev don't send any mgmt signals.
8383 */
8384 if (pending_find(MGMT_OP_SET_POWERED, hdev))
8385 return;
8386 }
8387
8388 mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
8389 cmd ? cmd->sk : NULL);
8390 }
8391
8392 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
8393 {
8394 int i;
8395
8396 for (i = 0; i < uuid_count; i++) {
8397 if (!memcmp(uuid, uuids[i], 16))
8398 return true;
8399 }
8400
8401 return false;
8402 }
8403
8404 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
8405 {
8406 u16 parsed = 0;
8407
8408 while (parsed < eir_len) {
8409 u8 field_len = eir[0];
8410 u8 uuid[16];
8411 int i;
8412
8413 if (field_len == 0)
8414 break;
8415
8416 if (eir_len - parsed < field_len + 1)
8417 break;
8418
8419 switch (eir[1]) {
8420 case EIR_UUID16_ALL:
8421 case EIR_UUID16_SOME:
8422 for (i = 0; i + 3 <= field_len; i += 2) {
8423 memcpy(uuid, bluetooth_base_uuid, 16);
8424 uuid[13] = eir[i + 3];
8425 uuid[12] = eir[i + 2];
8426 if (has_uuid(uuid, uuid_count, uuids))
8427 return true;
8428 }
8429 break;
8430 case EIR_UUID32_ALL:
8431 case EIR_UUID32_SOME:
8432 for (i = 0; i + 5 <= field_len; i += 4) {
8433 memcpy(uuid, bluetooth_base_uuid, 16);
8434 uuid[15] = eir[i + 5];
8435 uuid[14] = eir[i + 4];
8436 uuid[13] = eir[i + 3];
8437 uuid[12] = eir[i + 2];
8438 if (has_uuid(uuid, uuid_count, uuids))
8439 return true;
8440 }
8441 break;
8442 case EIR_UUID128_ALL:
8443 case EIR_UUID128_SOME:
8444 for (i = 0; i + 17 <= field_len; i += 16) {
8445 memcpy(uuid, eir + i + 2, 16);
8446 if (has_uuid(uuid, uuid_count, uuids))
8447 return true;
8448 }
8449 break;
8450 }
8451
8452 parsed += field_len + 1;
8453 eir += field_len + 1;
8454 }
8455
8456 return false;
8457 }
8458
8459 static void restart_le_scan(struct hci_dev *hdev)
8460 {
8461 /* If controller is not scanning we are done. */
8462 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
8463 return;
8464
8465 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
8466 hdev->discovery.scan_start +
8467 hdev->discovery.scan_duration))
8468 return;
8469
8470 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
8471 DISCOV_LE_RESTART_DELAY);
8472 }
8473
8474 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir,
8475 u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8476 {
8477 /* If a RSSI threshold has been specified, and
8478 * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with
8479 * a RSSI smaller than the RSSI threshold will be dropped. If the quirk
8480 * is set, let it through for further processing, as we might need to
8481 * restart the scan.
8482 *
8483 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
8484 * the results are also dropped.
8485 */
8486 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8487 (rssi == HCI_RSSI_INVALID ||
8488 (rssi < hdev->discovery.rssi &&
8489 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
8490 return false;
8491
8492 if (hdev->discovery.uuid_count != 0) {
8493 /* If a list of UUIDs is provided in filter, results with no
8494 * matching UUID should be dropped.
8495 */
8496 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count,
8497 hdev->discovery.uuids) &&
8498 !eir_has_uuids(scan_rsp, scan_rsp_len,
8499 hdev->discovery.uuid_count,
8500 hdev->discovery.uuids))
8501 return false;
8502 }
8503
8504 /* If duplicate filtering does not report RSSI changes, then restart
8505 * scanning to ensure updated result with updated RSSI values.
8506 */
8507 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) {
8508 restart_le_scan(hdev);
8509
8510 /* Validate RSSI value against the RSSI threshold once more. */
8511 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8512 rssi < hdev->discovery.rssi)
8513 return false;
8514 }
8515
8516 return true;
8517 }
8518
8519 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8520 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
8521 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8522 {
8523 char buf[512];
8524 struct mgmt_ev_device_found *ev = (void *)buf;
8525 size_t ev_size;
8526
8527 /* Don't send events for a non-kernel initiated discovery. With
8528 * LE one exception is if we have pend_le_reports > 0 in which
8529 * case we're doing passive scanning and want these events.
8530 */
8531 if (!hci_discovery_active(hdev)) {
8532 if (link_type == ACL_LINK)
8533 return;
8534 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
8535 return;
8536 }
8537
8538 if (hdev->discovery.result_filtering) {
8539 /* We are using service discovery */
8540 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp,
8541 scan_rsp_len))
8542 return;
8543 }
8544
8545 /* Make sure that the buffer is big enough. The 5 extra bytes
8546 * are for the potential CoD field.
8547 */
8548 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
8549 return;
8550
8551 memset(buf, 0, sizeof(buf));
8552
8553 /* In case of device discovery with BR/EDR devices (pre 1.2), the
8554 * RSSI value was reported as 0 when not available. This behavior
8555 * is kept when using device discovery. This is required for full
8556 * backwards compatibility with the API.
8557 *
8558 * However when using service discovery, the value 127 will be
8559 * returned when the RSSI is not available.
8560 */
8561 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
8562 link_type == ACL_LINK)
8563 rssi = 0;
8564
8565 bacpy(&ev->addr.bdaddr, bdaddr);
8566 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8567 ev->rssi = rssi;
8568 ev->flags = cpu_to_le32(flags);
8569
8570 if (eir_len > 0)
8571 /* Copy EIR or advertising data into event */
8572 memcpy(ev->eir, eir, eir_len);
8573
8574 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
8575 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
8576 dev_class, 3);
8577
8578 if (scan_rsp_len > 0)
8579 /* Append scan response data to event */
8580 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
8581
8582 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
8583 ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
8584
8585 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
8586 }
8587
8588 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8589 u8 addr_type, s8 rssi, u8 *name, u8 name_len)
8590 {
8591 struct mgmt_ev_device_found *ev;
8592 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
8593 u16 eir_len;
8594
8595 ev = (struct mgmt_ev_device_found *) buf;
8596
8597 memset(buf, 0, sizeof(buf));
8598
8599 bacpy(&ev->addr.bdaddr, bdaddr);
8600 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8601 ev->rssi = rssi;
8602
8603 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
8604 name_len);
8605
8606 ev->eir_len = cpu_to_le16(eir_len);
8607
8608 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
8609 }
8610
8611 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
8612 {
8613 struct mgmt_ev_discovering ev;
8614
8615 BT_DBG("%s discovering %u", hdev->name, discovering);
8616
8617 memset(&ev, 0, sizeof(ev));
8618 ev.type = hdev->discovery.type;
8619 ev.discovering = discovering;
8620
8621 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
8622 }
8623
8624 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
8625 {
8626 BT_DBG("%s status %u", hdev->name, status);
8627 }
8628
8629 void mgmt_reenable_advertising(struct hci_dev *hdev)
8630 {
8631 struct hci_request req;
8632 u8 instance;
8633
8634 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
8635 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
8636 return;
8637
8638 instance = get_current_adv_instance(hdev);
8639
8640 hci_req_init(&req, hdev);
8641
8642 if (instance) {
8643 schedule_adv_instance(&req, instance, true);
8644 } else {
8645 update_adv_data(&req);
8646 update_scan_rsp_data(&req);
8647 enable_advertising(&req);
8648 }
8649
8650 hci_req_run(&req, adv_enable_complete);
8651 }
8652
8653 static struct hci_mgmt_chan chan = {
8654 .channel = HCI_CHANNEL_CONTROL,
8655 .handler_count = ARRAY_SIZE(mgmt_handlers),
8656 .handlers = mgmt_handlers,
8657 .hdev_init = mgmt_init_hdev,
8658 };
8659
8660 int mgmt_init(void)
8661 {
8662 return hci_mgmt_chan_register(&chan);
8663 }
8664
8665 void mgmt_exit(void)
8666 {
8667 hci_mgmt_chan_unregister(&chan);
8668 }
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