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