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
mgmt_status(u8 hci_status)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
mgmt_index_event(u16 event,struct hci_dev * hdev,void * data,u16 len,int flag)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
mgmt_limited_event(u16 event,struct hci_dev * hdev,void * data,u16 len,int flag,struct sock * skip_sk)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
mgmt_generic_event(u16 event,struct hci_dev * hdev,void * data,u16 len,struct sock * skip_sk)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
mgmt_event(u16 event,struct hci_dev * hdev,void * data,u16 len,struct sock * skip_sk)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
le_addr_type(u8 mgmt_addr_type)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
read_version(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
read_commands(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
read_index_list(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
read_unconf_index_list(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
read_ext_index_list(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
is_configured(struct hci_dev * hdev)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
get_missing_options(struct hci_dev * hdev)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
new_options(struct hci_dev * hdev,struct sock * skip)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
send_options_rsp(struct sock * sk,u16 opcode,struct hci_dev * hdev)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
read_config_info(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
get_supported_settings(struct hci_dev * hdev)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
get_current_settings(struct hci_dev * hdev)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
create_uuid16_list(struct hci_dev * hdev,u8 * data,ptrdiff_t len)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
create_uuid32_list(struct hci_dev * hdev,u8 * data,ptrdiff_t len)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
create_uuid128_list(struct hci_dev * hdev,u8 * data,ptrdiff_t len)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
pending_find(u16 opcode,struct hci_dev * hdev)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
pending_find_data(u16 opcode,struct hci_dev * hdev,const void * data)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
get_current_adv_instance(struct hci_dev * hdev)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
create_default_scan_rsp_data(struct hci_dev * hdev,u8 * ptr)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
create_instance_scan_rsp_data(struct hci_dev * hdev,u8 instance,u8 * ptr)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
update_inst_scan_rsp_data(struct hci_request * req,u8 instance)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
update_scan_rsp_data(struct hci_request * req)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
get_adv_discov_flags(struct hci_dev * hdev)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
get_connectable(struct hci_dev * hdev)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
get_adv_instance_flags(struct hci_dev * hdev,u8 instance)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
get_cur_adv_instance_scan_rsp_len(struct hci_dev * hdev)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
create_instance_adv_data(struct hci_dev * hdev,u8 instance,u8 * ptr)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
update_inst_adv_data(struct hci_request * req,u8 instance)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
update_adv_data(struct hci_request * req)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
mgmt_update_adv_data(struct hci_dev * hdev)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
create_eir(struct hci_dev * hdev,u8 * data)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
update_eir(struct hci_request * req)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
get_service_classes(struct hci_dev * hdev)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
update_class(struct hci_request * req)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
disable_advertising(struct hci_request * req)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
enable_advertising(struct hci_request * req)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
service_cache_off(struct work_struct * work)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
rpa_expired(struct work_struct * work)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
mgmt_init_hdev(struct sock * sk,struct hci_dev * hdev)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
read_controller_info(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
send_settings_rsp(struct sock * sk,u16 opcode,struct hci_dev * hdev)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
clean_up_hci_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
hci_stop_discovery(struct hci_request * req)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
advertising_added(struct sock * sk,struct hci_dev * hdev,u8 instance)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
advertising_removed(struct sock * sk,struct hci_dev * hdev,u8 instance)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
schedule_adv_instance(struct hci_request * req,u8 instance,bool force)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
cancel_adv_timeout(struct hci_dev * hdev)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 */
clear_adv_instance(struct hci_dev * hdev,struct hci_request * req,u8 instance,bool force)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
clean_up_hci_state(struct hci_dev * hdev)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
set_powered(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
new_settings(struct hci_dev * hdev,struct sock * skip)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
mgmt_new_settings(struct hci_dev * hdev)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
settings_rsp(struct mgmt_pending_cmd * cmd,void * data)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
cmd_status_rsp(struct mgmt_pending_cmd * cmd,void * data)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
cmd_complete_rsp(struct mgmt_pending_cmd * cmd,void * data)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
generic_cmd_complete(struct mgmt_pending_cmd * cmd,u8 status)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
addr_cmd_complete(struct mgmt_pending_cmd * cmd,u8 status)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
mgmt_bredr_support(struct hci_dev * hdev)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
mgmt_le_support(struct hci_dev * hdev)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
set_discoverable_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_discoverable(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
write_fast_connectable(struct hci_request * req,bool enable)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
set_connectable_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_connectable_update_settings(struct hci_dev * hdev,struct sock * sk,u8 val)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
set_connectable(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_bondable(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_link_security(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_ssp(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_hs(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
le_enable_complete(struct hci_dev * hdev,u8 status,u16 opcode)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_update_background_scan(&req);
2514 hci_req_run(&req, NULL);
2515 }
2516
2517 unlock:
2518 hci_dev_unlock(hdev);
2519 }
2520
set_le(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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 */
pending_eir_or_class(struct hci_dev * hdev)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
get_uuid_size(const u8 * uuid)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
mgmt_class_complete(struct hci_dev * hdev,u16 mgmt_op,u8 status)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
add_uuid_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
add_uuid(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
enable_service_cache(struct hci_dev * hdev)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
remove_uuid_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
remove_uuid(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_class_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_dev_class(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
load_link_keys(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
device_unpaired(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type,struct sock * skip_sk)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
unpair_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
disconnect(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
link_to_bdaddr(u8 link_type,u8 addr_type)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
get_connections(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
send_pin_code_neg_reply(struct sock * sk,struct hci_dev * hdev,struct mgmt_cp_pin_code_neg_reply * cp)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
pin_code_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_io_capability(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
find_pairing(struct hci_conn * conn)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
pairing_complete(struct mgmt_pending_cmd * cmd,u8 status)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
mgmt_smp_complete(struct hci_conn * conn,bool complete)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
pairing_complete_cb(struct hci_conn * conn,u8 status)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
le_pairing_complete_cb(struct hci_conn * conn,u8 status)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
pair_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
cancel_pair_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
user_pairing_resp(struct sock * sk,struct hci_dev * hdev,struct mgmt_addr_info * addr,u16 mgmt_op,u16 hci_op,__le32 passkey)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
pin_code_neg_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
user_confirm_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
user_confirm_neg_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
user_passkey_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
user_passkey_neg_reply(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
update_name(struct hci_request * req)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
set_name_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_local_name(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
read_local_oob_data_complete(struct hci_dev * hdev,u8 status,u16 opcode,struct sk_buff * skb)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
read_local_oob_data(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)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
add_remote_oob_data(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
remove_remote_oob_data(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
trigger_bredr_inquiry(struct hci_request * req,u8 * status)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
trigger_le_scan(struct hci_request * req,u16 interval,u8 * status)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(¶m_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 ¶m_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
trigger_discovery(struct hci_request * req,u8 * status)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
start_discovery_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
start_discovery(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
service_discovery_cmd_complete(struct mgmt_pending_cmd * cmd,u8 status)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
start_service_discovery(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
stop_discovery_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
stop_discovery(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
confirm_name(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
block_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
unblock_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_device_id(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
enable_advertising_instance(struct hci_dev * hdev,u8 status,u16 opcode)4787 static void enable_advertising_instance(struct hci_dev *hdev, u8 status,
4788 u16 opcode)
4789 {
4790 BT_DBG("status %d", status);
4791 }
4792
set_advertising_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_advertising(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_static_address(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_scan_params(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
fast_connectable_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_fast_connectable(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_bredr_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_bredr(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
sc_enable_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
set_secure_conn(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_debug_keys(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
set_privacy(struct sock * sk,struct hci_dev * hdev,void * cp_data,u16 len)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
irk_is_valid(struct mgmt_irk_info * irk)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
load_irks(struct sock * sk,struct hci_dev * hdev,void * cp_data,u16 len)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
ltk_is_valid(struct mgmt_ltk_info * key)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
load_long_term_keys(struct sock * sk,struct hci_dev * hdev,void * cp_data,u16 len)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
conn_info_cmd_complete(struct mgmt_pending_cmd * cmd,u8 status)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
conn_info_refresh_complete(struct hci_dev * hdev,u8 hci_status,u16 opcode)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
get_conn_info(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
clock_info_cmd_complete(struct mgmt_pending_cmd * cmd,u8 status)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
get_clock_info_complete(struct hci_dev * hdev,u8 status,u16 opcode)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
get_clock_info(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)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
is_connected(struct hci_dev * hdev,bdaddr_t * addr,u8 type)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 */
hci_conn_params_set(struct hci_request * req,bdaddr_t * addr,u8 addr_type,u8 auto_connect)6079 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
6080 u8 addr_type, u8 auto_connect)
6081 {
6082 struct hci_dev *hdev = req->hdev;
6083 struct hci_conn_params *params;
6084
6085 params = hci_conn_params_add(hdev, addr, addr_type);
6086 if (!params)
6087 return -EIO;
6088
6089 if (params->auto_connect == auto_connect)
6090 return 0;
6091
6092 list_del_init(¶ms->action);
6093
6094 switch (auto_connect) {
6095 case HCI_AUTO_CONN_DISABLED:
6096 case HCI_AUTO_CONN_LINK_LOSS:
6097 /* If auto connect is being disabled when we're trying to
6098 * connect to device, keep connecting.
6099 */
6100 if (params->explicit_connect)
6101 list_add(¶ms->action, &hdev->pend_le_conns);
6102
6103 __hci_update_background_scan(req);
6104 break;
6105 case HCI_AUTO_CONN_REPORT:
6106 if (params->explicit_connect)
6107 list_add(¶ms->action, &hdev->pend_le_conns);
6108 else
6109 list_add(¶ms->action, &hdev->pend_le_reports);
6110 __hci_update_background_scan(req);
6111 break;
6112 case HCI_AUTO_CONN_DIRECT:
6113 case HCI_AUTO_CONN_ALWAYS:
6114 if (!is_connected(hdev, addr, addr_type)) {
6115 list_add(¶ms->action, &hdev->pend_le_conns);
6116 /* If we are in scan phase of connecting, we were
6117 * already added to pend_le_conns and scanning.
6118 */
6119 if (params->auto_connect != HCI_AUTO_CONN_EXPLICIT)
6120 __hci_update_background_scan(req);
6121 }
6122 break;
6123 }
6124
6125 params->auto_connect = auto_connect;
6126
6127 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
6128 auto_connect);
6129
6130 return 0;
6131 }
6132
device_added(struct sock * sk,struct hci_dev * hdev,bdaddr_t * bdaddr,u8 type,u8 action)6133 static void device_added(struct sock *sk, struct hci_dev *hdev,
6134 bdaddr_t *bdaddr, u8 type, u8 action)
6135 {
6136 struct mgmt_ev_device_added ev;
6137
6138 bacpy(&ev.addr.bdaddr, bdaddr);
6139 ev.addr.type = type;
6140 ev.action = action;
6141
6142 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
6143 }
6144
add_device_complete(struct hci_dev * hdev,u8 status,u16 opcode)6145 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6146 {
6147 struct mgmt_pending_cmd *cmd;
6148
6149 BT_DBG("status 0x%02x", status);
6150
6151 hci_dev_lock(hdev);
6152
6153 cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev);
6154 if (!cmd)
6155 goto unlock;
6156
6157 cmd->cmd_complete(cmd, mgmt_status(status));
6158 mgmt_pending_remove(cmd);
6159
6160 unlock:
6161 hci_dev_unlock(hdev);
6162 }
6163
add_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)6164 static int add_device(struct sock *sk, struct hci_dev *hdev,
6165 void *data, u16 len)
6166 {
6167 struct mgmt_cp_add_device *cp = data;
6168 struct mgmt_pending_cmd *cmd;
6169 struct hci_request req;
6170 u8 auto_conn, addr_type;
6171 int err;
6172
6173 BT_DBG("%s", hdev->name);
6174
6175 if (!bdaddr_type_is_valid(cp->addr.type) ||
6176 !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
6177 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6178 MGMT_STATUS_INVALID_PARAMS,
6179 &cp->addr, sizeof(cp->addr));
6180
6181 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
6182 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6183 MGMT_STATUS_INVALID_PARAMS,
6184 &cp->addr, sizeof(cp->addr));
6185
6186 hci_req_init(&req, hdev);
6187
6188 hci_dev_lock(hdev);
6189
6190 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
6191 if (!cmd) {
6192 err = -ENOMEM;
6193 goto unlock;
6194 }
6195
6196 cmd->cmd_complete = addr_cmd_complete;
6197
6198 if (cp->addr.type == BDADDR_BREDR) {
6199 /* Only incoming connections action is supported for now */
6200 if (cp->action != 0x01) {
6201 err = cmd->cmd_complete(cmd,
6202 MGMT_STATUS_INVALID_PARAMS);
6203 mgmt_pending_remove(cmd);
6204 goto unlock;
6205 }
6206
6207 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
6208 cp->addr.type);
6209 if (err)
6210 goto unlock;
6211
6212 __hci_update_page_scan(&req);
6213
6214 goto added;
6215 }
6216
6217 addr_type = le_addr_type(cp->addr.type);
6218
6219 if (cp->action == 0x02)
6220 auto_conn = HCI_AUTO_CONN_ALWAYS;
6221 else if (cp->action == 0x01)
6222 auto_conn = HCI_AUTO_CONN_DIRECT;
6223 else
6224 auto_conn = HCI_AUTO_CONN_REPORT;
6225
6226 /* Kernel internally uses conn_params with resolvable private
6227 * address, but Add Device allows only identity addresses.
6228 * Make sure it is enforced before calling
6229 * hci_conn_params_lookup.
6230 */
6231 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6232 err = cmd->cmd_complete(cmd, MGMT_STATUS_INVALID_PARAMS);
6233 mgmt_pending_remove(cmd);
6234 goto unlock;
6235 }
6236
6237 /* If the connection parameters don't exist for this device,
6238 * they will be created and configured with defaults.
6239 */
6240 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
6241 auto_conn) < 0) {
6242 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
6243 mgmt_pending_remove(cmd);
6244 goto unlock;
6245 }
6246
6247 added:
6248 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
6249
6250 err = hci_req_run(&req, add_device_complete);
6251 if (err < 0) {
6252 /* ENODATA means no HCI commands were needed (e.g. if
6253 * the adapter is powered off).
6254 */
6255 if (err == -ENODATA)
6256 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6257 mgmt_pending_remove(cmd);
6258 }
6259
6260 unlock:
6261 hci_dev_unlock(hdev);
6262 return err;
6263 }
6264
device_removed(struct sock * sk,struct hci_dev * hdev,bdaddr_t * bdaddr,u8 type)6265 static void device_removed(struct sock *sk, struct hci_dev *hdev,
6266 bdaddr_t *bdaddr, u8 type)
6267 {
6268 struct mgmt_ev_device_removed ev;
6269
6270 bacpy(&ev.addr.bdaddr, bdaddr);
6271 ev.addr.type = type;
6272
6273 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
6274 }
6275
remove_device_complete(struct hci_dev * hdev,u8 status,u16 opcode)6276 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6277 {
6278 struct mgmt_pending_cmd *cmd;
6279
6280 BT_DBG("status 0x%02x", status);
6281
6282 hci_dev_lock(hdev);
6283
6284 cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
6285 if (!cmd)
6286 goto unlock;
6287
6288 cmd->cmd_complete(cmd, mgmt_status(status));
6289 mgmt_pending_remove(cmd);
6290
6291 unlock:
6292 hci_dev_unlock(hdev);
6293 }
6294
remove_device(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)6295 static int remove_device(struct sock *sk, struct hci_dev *hdev,
6296 void *data, u16 len)
6297 {
6298 struct mgmt_cp_remove_device *cp = data;
6299 struct mgmt_pending_cmd *cmd;
6300 struct hci_request req;
6301 int err;
6302
6303 BT_DBG("%s", hdev->name);
6304
6305 hci_req_init(&req, hdev);
6306
6307 hci_dev_lock(hdev);
6308
6309 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
6310 if (!cmd) {
6311 err = -ENOMEM;
6312 goto unlock;
6313 }
6314
6315 cmd->cmd_complete = addr_cmd_complete;
6316
6317 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6318 struct hci_conn_params *params;
6319 u8 addr_type;
6320
6321 if (!bdaddr_type_is_valid(cp->addr.type)) {
6322 err = cmd->cmd_complete(cmd,
6323 MGMT_STATUS_INVALID_PARAMS);
6324 mgmt_pending_remove(cmd);
6325 goto unlock;
6326 }
6327
6328 if (cp->addr.type == BDADDR_BREDR) {
6329 err = hci_bdaddr_list_del(&hdev->whitelist,
6330 &cp->addr.bdaddr,
6331 cp->addr.type);
6332 if (err) {
6333 err = cmd->cmd_complete(cmd,
6334 MGMT_STATUS_INVALID_PARAMS);
6335 mgmt_pending_remove(cmd);
6336 goto unlock;
6337 }
6338
6339 __hci_update_page_scan(&req);
6340
6341 device_removed(sk, hdev, &cp->addr.bdaddr,
6342 cp->addr.type);
6343 goto complete;
6344 }
6345
6346 addr_type = le_addr_type(cp->addr.type);
6347
6348 /* Kernel internally uses conn_params with resolvable private
6349 * address, but Remove Device allows only identity addresses.
6350 * Make sure it is enforced before calling
6351 * hci_conn_params_lookup.
6352 */
6353 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6354 err = cmd->cmd_complete(cmd,
6355 MGMT_STATUS_INVALID_PARAMS);
6356 mgmt_pending_remove(cmd);
6357 goto unlock;
6358 }
6359
6360 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
6361 addr_type);
6362 if (!params) {
6363 err = cmd->cmd_complete(cmd,
6364 MGMT_STATUS_INVALID_PARAMS);
6365 mgmt_pending_remove(cmd);
6366 goto unlock;
6367 }
6368
6369 if (params->auto_connect == HCI_AUTO_CONN_DISABLED ||
6370 params->auto_connect == HCI_AUTO_CONN_EXPLICIT) {
6371 err = cmd->cmd_complete(cmd,
6372 MGMT_STATUS_INVALID_PARAMS);
6373 mgmt_pending_remove(cmd);
6374 goto unlock;
6375 }
6376
6377 list_del(¶ms->action);
6378 list_del(¶ms->list);
6379 kfree(params);
6380 __hci_update_background_scan(&req);
6381
6382 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
6383 } else {
6384 struct hci_conn_params *p, *tmp;
6385 struct bdaddr_list *b, *btmp;
6386
6387 if (cp->addr.type) {
6388 err = cmd->cmd_complete(cmd,
6389 MGMT_STATUS_INVALID_PARAMS);
6390 mgmt_pending_remove(cmd);
6391 goto unlock;
6392 }
6393
6394 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
6395 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
6396 list_del(&b->list);
6397 kfree(b);
6398 }
6399
6400 __hci_update_page_scan(&req);
6401
6402 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
6403 if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
6404 continue;
6405 device_removed(sk, hdev, &p->addr, p->addr_type);
6406 if (p->explicit_connect) {
6407 p->auto_connect = HCI_AUTO_CONN_EXPLICIT;
6408 continue;
6409 }
6410 list_del(&p->action);
6411 list_del(&p->list);
6412 kfree(p);
6413 }
6414
6415 BT_DBG("All LE connection parameters were removed");
6416
6417 __hci_update_background_scan(&req);
6418 }
6419
6420 complete:
6421 err = hci_req_run(&req, remove_device_complete);
6422 if (err < 0) {
6423 /* ENODATA means no HCI commands were needed (e.g. if
6424 * the adapter is powered off).
6425 */
6426 if (err == -ENODATA)
6427 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6428 mgmt_pending_remove(cmd);
6429 }
6430
6431 unlock:
6432 hci_dev_unlock(hdev);
6433 return err;
6434 }
6435
load_conn_param(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)6436 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
6437 u16 len)
6438 {
6439 struct mgmt_cp_load_conn_param *cp = data;
6440 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
6441 sizeof(struct mgmt_conn_param));
6442 u16 param_count, expected_len;
6443 int i;
6444
6445 if (!lmp_le_capable(hdev))
6446 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6447 MGMT_STATUS_NOT_SUPPORTED);
6448
6449 param_count = __le16_to_cpu(cp->param_count);
6450 if (param_count > max_param_count) {
6451 BT_ERR("load_conn_param: too big param_count value %u",
6452 param_count);
6453 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6454 MGMT_STATUS_INVALID_PARAMS);
6455 }
6456
6457 expected_len = sizeof(*cp) + param_count *
6458 sizeof(struct mgmt_conn_param);
6459 if (expected_len != len) {
6460 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
6461 expected_len, len);
6462 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6463 MGMT_STATUS_INVALID_PARAMS);
6464 }
6465
6466 BT_DBG("%s param_count %u", hdev->name, param_count);
6467
6468 hci_dev_lock(hdev);
6469
6470 hci_conn_params_clear_disabled(hdev);
6471
6472 for (i = 0; i < param_count; i++) {
6473 struct mgmt_conn_param *param = &cp->params[i];
6474 struct hci_conn_params *hci_param;
6475 u16 min, max, latency, timeout;
6476 u8 addr_type;
6477
6478 BT_DBG("Adding %pMR (type %u)", ¶m->addr.bdaddr,
6479 param->addr.type);
6480
6481 if (param->addr.type == BDADDR_LE_PUBLIC) {
6482 addr_type = ADDR_LE_DEV_PUBLIC;
6483 } else if (param->addr.type == BDADDR_LE_RANDOM) {
6484 addr_type = ADDR_LE_DEV_RANDOM;
6485 } else {
6486 BT_ERR("Ignoring invalid connection parameters");
6487 continue;
6488 }
6489
6490 min = le16_to_cpu(param->min_interval);
6491 max = le16_to_cpu(param->max_interval);
6492 latency = le16_to_cpu(param->latency);
6493 timeout = le16_to_cpu(param->timeout);
6494
6495 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
6496 min, max, latency, timeout);
6497
6498 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
6499 BT_ERR("Ignoring invalid connection parameters");
6500 continue;
6501 }
6502
6503 hci_param = hci_conn_params_add(hdev, ¶m->addr.bdaddr,
6504 addr_type);
6505 if (!hci_param) {
6506 BT_ERR("Failed to add connection parameters");
6507 continue;
6508 }
6509
6510 hci_param->conn_min_interval = min;
6511 hci_param->conn_max_interval = max;
6512 hci_param->conn_latency = latency;
6513 hci_param->supervision_timeout = timeout;
6514 }
6515
6516 hci_dev_unlock(hdev);
6517
6518 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0,
6519 NULL, 0);
6520 }
6521
set_external_config(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)6522 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
6523 void *data, u16 len)
6524 {
6525 struct mgmt_cp_set_external_config *cp = data;
6526 bool changed;
6527 int err;
6528
6529 BT_DBG("%s", hdev->name);
6530
6531 if (hdev_is_powered(hdev))
6532 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6533 MGMT_STATUS_REJECTED);
6534
6535 if (cp->config != 0x00 && cp->config != 0x01)
6536 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6537 MGMT_STATUS_INVALID_PARAMS);
6538
6539 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6540 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6541 MGMT_STATUS_NOT_SUPPORTED);
6542
6543 hci_dev_lock(hdev);
6544
6545 if (cp->config)
6546 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED);
6547 else
6548 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED);
6549
6550 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6551 if (err < 0)
6552 goto unlock;
6553
6554 if (!changed)
6555 goto unlock;
6556
6557 err = new_options(hdev, sk);
6558
6559 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) {
6560 mgmt_index_removed(hdev);
6561
6562 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) {
6563 hci_dev_set_flag(hdev, HCI_CONFIG);
6564 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6565
6566 queue_work(hdev->req_workqueue, &hdev->power_on);
6567 } else {
6568 set_bit(HCI_RAW, &hdev->flags);
6569 mgmt_index_added(hdev);
6570 }
6571 }
6572
6573 unlock:
6574 hci_dev_unlock(hdev);
6575 return err;
6576 }
6577
set_public_address(struct sock * sk,struct hci_dev * hdev,void * data,u16 len)6578 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6579 void *data, u16 len)
6580 {
6581 struct mgmt_cp_set_public_address *cp = data;
6582 bool changed;
6583 int err;
6584
6585 BT_DBG("%s", hdev->name);
6586
6587 if (hdev_is_powered(hdev))
6588 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6589 MGMT_STATUS_REJECTED);
6590
6591 if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6592 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6593 MGMT_STATUS_INVALID_PARAMS);
6594
6595 if (!hdev->set_bdaddr)
6596 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6597 MGMT_STATUS_NOT_SUPPORTED);
6598
6599 hci_dev_lock(hdev);
6600
6601 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6602 bacpy(&hdev->public_addr, &cp->bdaddr);
6603
6604 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6605 if (err < 0)
6606 goto unlock;
6607
6608 if (!changed)
6609 goto unlock;
6610
6611 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
6612 err = new_options(hdev, sk);
6613
6614 if (is_configured(hdev)) {
6615 mgmt_index_removed(hdev);
6616
6617 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED);
6618
6619 hci_dev_set_flag(hdev, HCI_CONFIG);
6620 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6621
6622 queue_work(hdev->req_workqueue, &hdev->power_on);
6623 }
6624
6625 unlock:
6626 hci_dev_unlock(hdev);
6627 return err;
6628 }
6629
eir_append_data(u8 * eir,u16 eir_len,u8 type,u8 * data,u8 data_len)6630 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6631 u8 data_len)
6632 {
6633 eir[eir_len++] = sizeof(type) + data_len;
6634 eir[eir_len++] = type;
6635 memcpy(&eir[eir_len], data, data_len);
6636 eir_len += data_len;
6637
6638 return eir_len;
6639 }
6640
read_local_oob_ext_data_complete(struct hci_dev * hdev,u8 status,u16 opcode,struct sk_buff * skb)6641 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
6642 u16 opcode, struct sk_buff *skb)
6643 {
6644 const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp;
6645 struct mgmt_rp_read_local_oob_ext_data *mgmt_rp;
6646 u8 *h192, *r192, *h256, *r256;
6647 struct mgmt_pending_cmd *cmd;
6648 u16 eir_len;
6649 int err;
6650
6651 BT_DBG("%s status %u", hdev->name, status);
6652
6653 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev);
6654 if (!cmd)
6655 return;
6656
6657 mgmt_cp = cmd->param;
6658
6659 if (status) {
6660 status = mgmt_status(status);
6661 eir_len = 0;
6662
6663 h192 = NULL;
6664 r192 = NULL;
6665 h256 = NULL;
6666 r256 = NULL;
6667 } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
6668 struct hci_rp_read_local_oob_data *rp;
6669
6670 if (skb->len != sizeof(*rp)) {
6671 status = MGMT_STATUS_FAILED;
6672 eir_len = 0;
6673 } else {
6674 status = MGMT_STATUS_SUCCESS;
6675 rp = (void *)skb->data;
6676
6677 eir_len = 5 + 18 + 18;
6678 h192 = rp->hash;
6679 r192 = rp->rand;
6680 h256 = NULL;
6681 r256 = NULL;
6682 }
6683 } else {
6684 struct hci_rp_read_local_oob_ext_data *rp;
6685
6686 if (skb->len != sizeof(*rp)) {
6687 status = MGMT_STATUS_FAILED;
6688 eir_len = 0;
6689 } else {
6690 status = MGMT_STATUS_SUCCESS;
6691 rp = (void *)skb->data;
6692
6693 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
6694 eir_len = 5 + 18 + 18;
6695 h192 = NULL;
6696 r192 = NULL;
6697 } else {
6698 eir_len = 5 + 18 + 18 + 18 + 18;
6699 h192 = rp->hash192;
6700 r192 = rp->rand192;
6701 }
6702
6703 h256 = rp->hash256;
6704 r256 = rp->rand256;
6705 }
6706 }
6707
6708 mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL);
6709 if (!mgmt_rp)
6710 goto done;
6711
6712 if (status)
6713 goto send_rsp;
6714
6715 eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
6716 hdev->dev_class, 3);
6717
6718 if (h192 && r192) {
6719 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6720 EIR_SSP_HASH_C192, h192, 16);
6721 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6722 EIR_SSP_RAND_R192, r192, 16);
6723 }
6724
6725 if (h256 && r256) {
6726 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6727 EIR_SSP_HASH_C256, h256, 16);
6728 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6729 EIR_SSP_RAND_R256, r256, 16);
6730 }
6731
6732 send_rsp:
6733 mgmt_rp->type = mgmt_cp->type;
6734 mgmt_rp->eir_len = cpu_to_le16(eir_len);
6735
6736 err = mgmt_cmd_complete(cmd->sk, hdev->id,
6737 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status,
6738 mgmt_rp, sizeof(*mgmt_rp) + eir_len);
6739 if (err < 0 || status)
6740 goto done;
6741
6742 hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS);
6743
6744 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6745 mgmt_rp, sizeof(*mgmt_rp) + eir_len,
6746 HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
6747 done:
6748 kfree(mgmt_rp);
6749 mgmt_pending_remove(cmd);
6750 }
6751
read_local_ssp_oob_req(struct hci_dev * hdev,struct sock * sk,struct mgmt_cp_read_local_oob_ext_data * cp)6752 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
6753 struct mgmt_cp_read_local_oob_ext_data *cp)
6754 {
6755 struct mgmt_pending_cmd *cmd;
6756 struct hci_request req;
6757 int err;
6758
6759 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
6760 cp, sizeof(*cp));
6761 if (!cmd)
6762 return -ENOMEM;
6763
6764 hci_req_init(&req, hdev);
6765
6766 if (bredr_sc_enabled(hdev))
6767 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
6768 else
6769 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
6770
6771 err = hci_req_run_skb(&req, read_local_oob_ext_data_complete);
6772 if (err < 0) {
6773 mgmt_pending_remove(cmd);
6774 return err;
6775 }
6776
6777 return 0;
6778 }
6779
read_local_oob_ext_data(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)6780 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
6781 void *data, u16 data_len)
6782 {
6783 struct mgmt_cp_read_local_oob_ext_data *cp = data;
6784 struct mgmt_rp_read_local_oob_ext_data *rp;
6785 size_t rp_len;
6786 u16 eir_len;
6787 u8 status, flags, role, addr[7], hash[16], rand[16];
6788 int err;
6789
6790 BT_DBG("%s", hdev->name);
6791
6792 if (hdev_is_powered(hdev)) {
6793 switch (cp->type) {
6794 case BIT(BDADDR_BREDR):
6795 status = mgmt_bredr_support(hdev);
6796 if (status)
6797 eir_len = 0;
6798 else
6799 eir_len = 5;
6800 break;
6801 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6802 status = mgmt_le_support(hdev);
6803 if (status)
6804 eir_len = 0;
6805 else
6806 eir_len = 9 + 3 + 18 + 18 + 3;
6807 break;
6808 default:
6809 status = MGMT_STATUS_INVALID_PARAMS;
6810 eir_len = 0;
6811 break;
6812 }
6813 } else {
6814 status = MGMT_STATUS_NOT_POWERED;
6815 eir_len = 0;
6816 }
6817
6818 rp_len = sizeof(*rp) + eir_len;
6819 rp = kmalloc(rp_len, GFP_ATOMIC);
6820 if (!rp)
6821 return -ENOMEM;
6822
6823 if (status)
6824 goto complete;
6825
6826 hci_dev_lock(hdev);
6827
6828 eir_len = 0;
6829 switch (cp->type) {
6830 case BIT(BDADDR_BREDR):
6831 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
6832 err = read_local_ssp_oob_req(hdev, sk, cp);
6833 hci_dev_unlock(hdev);
6834 if (!err)
6835 goto done;
6836
6837 status = MGMT_STATUS_FAILED;
6838 goto complete;
6839 } else {
6840 eir_len = eir_append_data(rp->eir, eir_len,
6841 EIR_CLASS_OF_DEV,
6842 hdev->dev_class, 3);
6843 }
6844 break;
6845 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6846 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
6847 smp_generate_oob(hdev, hash, rand) < 0) {
6848 hci_dev_unlock(hdev);
6849 status = MGMT_STATUS_FAILED;
6850 goto complete;
6851 }
6852
6853 /* This should return the active RPA, but since the RPA
6854 * is only programmed on demand, it is really hard to fill
6855 * this in at the moment. For now disallow retrieving
6856 * local out-of-band data when privacy is in use.
6857 *
6858 * Returning the identity address will not help here since
6859 * pairing happens before the identity resolving key is
6860 * known and thus the connection establishment happens
6861 * based on the RPA and not the identity address.
6862 */
6863 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6864 hci_dev_unlock(hdev);
6865 status = MGMT_STATUS_REJECTED;
6866 goto complete;
6867 }
6868
6869 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
6870 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
6871 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
6872 bacmp(&hdev->static_addr, BDADDR_ANY))) {
6873 memcpy(addr, &hdev->static_addr, 6);
6874 addr[6] = 0x01;
6875 } else {
6876 memcpy(addr, &hdev->bdaddr, 6);
6877 addr[6] = 0x00;
6878 }
6879
6880 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR,
6881 addr, sizeof(addr));
6882
6883 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
6884 role = 0x02;
6885 else
6886 role = 0x01;
6887
6888 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE,
6889 &role, sizeof(role));
6890
6891 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) {
6892 eir_len = eir_append_data(rp->eir, eir_len,
6893 EIR_LE_SC_CONFIRM,
6894 hash, sizeof(hash));
6895
6896 eir_len = eir_append_data(rp->eir, eir_len,
6897 EIR_LE_SC_RANDOM,
6898 rand, sizeof(rand));
6899 }
6900
6901 flags = get_adv_discov_flags(hdev);
6902
6903 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
6904 flags |= LE_AD_NO_BREDR;
6905
6906 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS,
6907 &flags, sizeof(flags));
6908 break;
6909 }
6910
6911 hci_dev_unlock(hdev);
6912
6913 hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS);
6914
6915 status = MGMT_STATUS_SUCCESS;
6916
6917 complete:
6918 rp->type = cp->type;
6919 rp->eir_len = cpu_to_le16(eir_len);
6920
6921 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
6922 status, rp, sizeof(*rp) + eir_len);
6923 if (err < 0 || status)
6924 goto done;
6925
6926 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6927 rp, sizeof(*rp) + eir_len,
6928 HCI_MGMT_OOB_DATA_EVENTS, sk);
6929
6930 done:
6931 kfree(rp);
6932
6933 return err;
6934 }
6935
get_supported_adv_flags(struct hci_dev * hdev)6936 static u32 get_supported_adv_flags(struct hci_dev *hdev)
6937 {
6938 u32 flags = 0;
6939
6940 flags |= MGMT_ADV_FLAG_CONNECTABLE;
6941 flags |= MGMT_ADV_FLAG_DISCOV;
6942 flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
6943 flags |= MGMT_ADV_FLAG_MANAGED_FLAGS;
6944
6945 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID)
6946 flags |= MGMT_ADV_FLAG_TX_POWER;
6947
6948 return flags;
6949 }
6950
read_adv_features(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)6951 static int read_adv_features(struct sock *sk, struct hci_dev *hdev,
6952 void *data, u16 data_len)
6953 {
6954 struct mgmt_rp_read_adv_features *rp;
6955 size_t rp_len;
6956 int err, i;
6957 bool instance;
6958 struct adv_info *adv_instance;
6959 u32 supported_flags;
6960
6961 BT_DBG("%s", hdev->name);
6962
6963 if (!lmp_le_capable(hdev))
6964 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6965 MGMT_STATUS_REJECTED);
6966
6967 hci_dev_lock(hdev);
6968
6969 rp_len = sizeof(*rp);
6970
6971 instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE);
6972 if (instance)
6973 rp_len += hdev->adv_instance_cnt;
6974
6975 rp = kmalloc(rp_len, GFP_ATOMIC);
6976 if (!rp) {
6977 hci_dev_unlock(hdev);
6978 return -ENOMEM;
6979 }
6980
6981 supported_flags = get_supported_adv_flags(hdev);
6982
6983 rp->supported_flags = cpu_to_le32(supported_flags);
6984 rp->max_adv_data_len = HCI_MAX_AD_LENGTH;
6985 rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH;
6986 rp->max_instances = HCI_MAX_ADV_INSTANCES;
6987
6988 if (instance) {
6989 i = 0;
6990 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
6991 if (i >= hdev->adv_instance_cnt)
6992 break;
6993
6994 rp->instance[i] = adv_instance->instance;
6995 i++;
6996 }
6997 rp->num_instances = hdev->adv_instance_cnt;
6998 } else {
6999 rp->num_instances = 0;
7000 }
7001
7002 hci_dev_unlock(hdev);
7003
7004 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
7005 MGMT_STATUS_SUCCESS, rp, rp_len);
7006
7007 kfree(rp);
7008
7009 return err;
7010 }
7011
tlv_data_is_valid(struct hci_dev * hdev,u32 adv_flags,u8 * data,u8 len,bool is_adv_data)7012 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data,
7013 u8 len, bool is_adv_data)
7014 {
7015 u8 max_len = HCI_MAX_AD_LENGTH;
7016 int i, cur_len;
7017 bool flags_managed = false;
7018 bool tx_power_managed = false;
7019 u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV |
7020 MGMT_ADV_FLAG_MANAGED_FLAGS;
7021
7022 if (is_adv_data && (adv_flags & flags_params)) {
7023 flags_managed = true;
7024 max_len -= 3;
7025 }
7026
7027 if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) {
7028 tx_power_managed = true;
7029 max_len -= 3;
7030 }
7031
7032 if (len > max_len)
7033 return false;
7034
7035 /* Make sure that the data is correctly formatted. */
7036 for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) {
7037 cur_len = data[i];
7038
7039 if (flags_managed && data[i + 1] == EIR_FLAGS)
7040 return false;
7041
7042 if (tx_power_managed && data[i + 1] == EIR_TX_POWER)
7043 return false;
7044
7045 /* If the current field length would exceed the total data
7046 * length, then it's invalid.
7047 */
7048 if (i + cur_len >= len)
7049 return false;
7050 }
7051
7052 return true;
7053 }
7054
add_advertising_complete(struct hci_dev * hdev,u8 status,u16 opcode)7055 static void add_advertising_complete(struct hci_dev *hdev, u8 status,
7056 u16 opcode)
7057 {
7058 struct mgmt_pending_cmd *cmd;
7059 struct mgmt_cp_add_advertising *cp;
7060 struct mgmt_rp_add_advertising rp;
7061 struct adv_info *adv_instance, *n;
7062 u8 instance;
7063
7064 BT_DBG("status %d", status);
7065
7066 hci_dev_lock(hdev);
7067
7068 cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev);
7069
7070 if (status)
7071 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
7072
7073 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
7074 if (!adv_instance->pending)
7075 continue;
7076
7077 if (!status) {
7078 adv_instance->pending = false;
7079 continue;
7080 }
7081
7082 instance = adv_instance->instance;
7083
7084 if (hdev->cur_adv_instance == instance)
7085 cancel_adv_timeout(hdev);
7086
7087 hci_remove_adv_instance(hdev, instance);
7088 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance);
7089 }
7090
7091 if (!cmd)
7092 goto unlock;
7093
7094 cp = cmd->param;
7095 rp.instance = cp->instance;
7096
7097 if (status)
7098 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
7099 mgmt_status(status));
7100 else
7101 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
7102 mgmt_status(status), &rp, sizeof(rp));
7103
7104 mgmt_pending_remove(cmd);
7105
7106 unlock:
7107 hci_dev_unlock(hdev);
7108 }
7109
mgmt_adv_timeout_expired(struct hci_dev * hdev)7110 void mgmt_adv_timeout_expired(struct hci_dev *hdev)
7111 {
7112 u8 instance;
7113 struct hci_request req;
7114
7115 hdev->adv_instance_timeout = 0;
7116
7117 instance = get_current_adv_instance(hdev);
7118 if (instance == 0x00)
7119 return;
7120
7121 hci_dev_lock(hdev);
7122 hci_req_init(&req, hdev);
7123
7124 clear_adv_instance(hdev, &req, instance, false);
7125
7126 if (list_empty(&hdev->adv_instances))
7127 disable_advertising(&req);
7128
7129 if (!skb_queue_empty(&req.cmd_q))
7130 hci_req_run(&req, NULL);
7131
7132 hci_dev_unlock(hdev);
7133 }
7134
add_advertising(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)7135 static int add_advertising(struct sock *sk, struct hci_dev *hdev,
7136 void *data, u16 data_len)
7137 {
7138 struct mgmt_cp_add_advertising *cp = data;
7139 struct mgmt_rp_add_advertising rp;
7140 u32 flags;
7141 u32 supported_flags;
7142 u8 status;
7143 u16 timeout, duration;
7144 unsigned int prev_instance_cnt = hdev->adv_instance_cnt;
7145 u8 schedule_instance = 0;
7146 struct adv_info *next_instance;
7147 int err;
7148 struct mgmt_pending_cmd *cmd;
7149 struct hci_request req;
7150
7151 BT_DBG("%s", hdev->name);
7152
7153 status = mgmt_le_support(hdev);
7154 if (status)
7155 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7156 status);
7157
7158 if (data_len != sizeof(*cp) + cp->adv_data_len + cp->scan_rsp_len)
7159 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7160 MGMT_STATUS_INVALID_PARAMS);
7161
7162 flags = __le32_to_cpu(cp->flags);
7163 timeout = __le16_to_cpu(cp->timeout);
7164 duration = __le16_to_cpu(cp->duration);
7165
7166 /* The current implementation only supports a subset of the specified
7167 * flags.
7168 */
7169 supported_flags = get_supported_adv_flags(hdev);
7170 if (flags & ~supported_flags)
7171 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7172 MGMT_STATUS_INVALID_PARAMS);
7173
7174 hci_dev_lock(hdev);
7175
7176 if (timeout && !hdev_is_powered(hdev)) {
7177 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7178 MGMT_STATUS_REJECTED);
7179 goto unlock;
7180 }
7181
7182 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7183 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7184 pending_find(MGMT_OP_SET_LE, hdev)) {
7185 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7186 MGMT_STATUS_BUSY);
7187 goto unlock;
7188 }
7189
7190 if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) ||
7191 !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len,
7192 cp->scan_rsp_len, false)) {
7193 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7194 MGMT_STATUS_INVALID_PARAMS);
7195 goto unlock;
7196 }
7197
7198 err = hci_add_adv_instance(hdev, cp->instance, flags,
7199 cp->adv_data_len, cp->data,
7200 cp->scan_rsp_len,
7201 cp->data + cp->adv_data_len,
7202 timeout, duration);
7203 if (err < 0) {
7204 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7205 MGMT_STATUS_FAILED);
7206 goto unlock;
7207 }
7208
7209 /* Only trigger an advertising added event if a new instance was
7210 * actually added.
7211 */
7212 if (hdev->adv_instance_cnt > prev_instance_cnt)
7213 advertising_added(sk, hdev, cp->instance);
7214
7215 hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE);
7216
7217 if (hdev->cur_adv_instance == cp->instance) {
7218 /* If the currently advertised instance is being changed then
7219 * cancel the current advertising and schedule the next
7220 * instance. If there is only one instance then the overridden
7221 * advertising data will be visible right away.
7222 */
7223 cancel_adv_timeout(hdev);
7224
7225 next_instance = hci_get_next_instance(hdev, cp->instance);
7226 if (next_instance)
7227 schedule_instance = next_instance->instance;
7228 } else if (!hdev->adv_instance_timeout) {
7229 /* Immediately advertise the new instance if no other
7230 * instance is currently being advertised.
7231 */
7232 schedule_instance = cp->instance;
7233 }
7234
7235 /* If the HCI_ADVERTISING flag is set or the device isn't powered or
7236 * there is no instance to be advertised then we have no HCI
7237 * communication to make. Simply return.
7238 */
7239 if (!hdev_is_powered(hdev) ||
7240 hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7241 !schedule_instance) {
7242 rp.instance = cp->instance;
7243 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7244 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7245 goto unlock;
7246 }
7247
7248 /* We're good to go, update advertising data, parameters, and start
7249 * advertising.
7250 */
7251 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data,
7252 data_len);
7253 if (!cmd) {
7254 err = -ENOMEM;
7255 goto unlock;
7256 }
7257
7258 hci_req_init(&req, hdev);
7259
7260 err = schedule_adv_instance(&req, schedule_instance, true);
7261
7262 if (!err)
7263 err = hci_req_run(&req, add_advertising_complete);
7264
7265 if (err < 0)
7266 mgmt_pending_remove(cmd);
7267
7268 unlock:
7269 hci_dev_unlock(hdev);
7270
7271 return err;
7272 }
7273
remove_advertising_complete(struct hci_dev * hdev,u8 status,u16 opcode)7274 static void remove_advertising_complete(struct hci_dev *hdev, u8 status,
7275 u16 opcode)
7276 {
7277 struct mgmt_pending_cmd *cmd;
7278 struct mgmt_cp_remove_advertising *cp;
7279 struct mgmt_rp_remove_advertising rp;
7280
7281 BT_DBG("status %d", status);
7282
7283 hci_dev_lock(hdev);
7284
7285 /* A failure status here only means that we failed to disable
7286 * advertising. Otherwise, the advertising instance has been removed,
7287 * so report success.
7288 */
7289 cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev);
7290 if (!cmd)
7291 goto unlock;
7292
7293 cp = cmd->param;
7294 rp.instance = cp->instance;
7295
7296 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS,
7297 &rp, sizeof(rp));
7298 mgmt_pending_remove(cmd);
7299
7300 unlock:
7301 hci_dev_unlock(hdev);
7302 }
7303
remove_advertising(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)7304 static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
7305 void *data, u16 data_len)
7306 {
7307 struct mgmt_cp_remove_advertising *cp = data;
7308 struct mgmt_rp_remove_advertising rp;
7309 struct mgmt_pending_cmd *cmd;
7310 struct hci_request req;
7311 int err;
7312
7313 BT_DBG("%s", hdev->name);
7314
7315 hci_dev_lock(hdev);
7316
7317 if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) {
7318 err = mgmt_cmd_status(sk, hdev->id,
7319 MGMT_OP_REMOVE_ADVERTISING,
7320 MGMT_STATUS_INVALID_PARAMS);
7321 goto unlock;
7322 }
7323
7324 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7325 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7326 pending_find(MGMT_OP_SET_LE, hdev)) {
7327 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7328 MGMT_STATUS_BUSY);
7329 goto unlock;
7330 }
7331
7332 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) {
7333 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7334 MGMT_STATUS_INVALID_PARAMS);
7335 goto unlock;
7336 }
7337
7338 hci_req_init(&req, hdev);
7339
7340 clear_adv_instance(hdev, &req, cp->instance, true);
7341
7342 if (list_empty(&hdev->adv_instances))
7343 disable_advertising(&req);
7344
7345 /* If no HCI commands have been collected so far or the HCI_ADVERTISING
7346 * flag is set or the device isn't powered then we have no HCI
7347 * communication to make. Simply return.
7348 */
7349 if (skb_queue_empty(&req.cmd_q) ||
7350 !hdev_is_powered(hdev) ||
7351 hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
7352 rp.instance = cp->instance;
7353 err = mgmt_cmd_complete(sk, hdev->id,
7354 MGMT_OP_REMOVE_ADVERTISING,
7355 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7356 goto unlock;
7357 }
7358
7359 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data,
7360 data_len);
7361 if (!cmd) {
7362 err = -ENOMEM;
7363 goto unlock;
7364 }
7365
7366 err = hci_req_run(&req, remove_advertising_complete);
7367 if (err < 0)
7368 mgmt_pending_remove(cmd);
7369
7370 unlock:
7371 hci_dev_unlock(hdev);
7372
7373 return err;
7374 }
7375
7376 static const struct hci_mgmt_handler mgmt_handlers[] = {
7377 { NULL }, /* 0x0000 (no command) */
7378 { read_version, MGMT_READ_VERSION_SIZE,
7379 HCI_MGMT_NO_HDEV |
7380 HCI_MGMT_UNTRUSTED },
7381 { read_commands, MGMT_READ_COMMANDS_SIZE,
7382 HCI_MGMT_NO_HDEV |
7383 HCI_MGMT_UNTRUSTED },
7384 { read_index_list, MGMT_READ_INDEX_LIST_SIZE,
7385 HCI_MGMT_NO_HDEV |
7386 HCI_MGMT_UNTRUSTED },
7387 { read_controller_info, MGMT_READ_INFO_SIZE,
7388 HCI_MGMT_UNTRUSTED },
7389 { set_powered, MGMT_SETTING_SIZE },
7390 { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE },
7391 { set_connectable, MGMT_SETTING_SIZE },
7392 { set_fast_connectable, MGMT_SETTING_SIZE },
7393 { set_bondable, MGMT_SETTING_SIZE },
7394 { set_link_security, MGMT_SETTING_SIZE },
7395 { set_ssp, MGMT_SETTING_SIZE },
7396 { set_hs, MGMT_SETTING_SIZE },
7397 { set_le, MGMT_SETTING_SIZE },
7398 { set_dev_class, MGMT_SET_DEV_CLASS_SIZE },
7399 { set_local_name, MGMT_SET_LOCAL_NAME_SIZE },
7400 { add_uuid, MGMT_ADD_UUID_SIZE },
7401 { remove_uuid, MGMT_REMOVE_UUID_SIZE },
7402 { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE,
7403 HCI_MGMT_VAR_LEN },
7404 { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE,
7405 HCI_MGMT_VAR_LEN },
7406 { disconnect, MGMT_DISCONNECT_SIZE },
7407 { get_connections, MGMT_GET_CONNECTIONS_SIZE },
7408 { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE },
7409 { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE },
7410 { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE },
7411 { pair_device, MGMT_PAIR_DEVICE_SIZE },
7412 { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE },
7413 { unpair_device, MGMT_UNPAIR_DEVICE_SIZE },
7414 { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE },
7415 { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
7416 { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE },
7417 { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
7418 { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE },
7419 { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE,
7420 HCI_MGMT_VAR_LEN },
7421 { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
7422 { start_discovery, MGMT_START_DISCOVERY_SIZE },
7423 { stop_discovery, MGMT_STOP_DISCOVERY_SIZE },
7424 { confirm_name, MGMT_CONFIRM_NAME_SIZE },
7425 { block_device, MGMT_BLOCK_DEVICE_SIZE },
7426 { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE },
7427 { set_device_id, MGMT_SET_DEVICE_ID_SIZE },
7428 { set_advertising, MGMT_SETTING_SIZE },
7429 { set_bredr, MGMT_SETTING_SIZE },
7430 { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE },
7431 { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE },
7432 { set_secure_conn, MGMT_SETTING_SIZE },
7433 { set_debug_keys, MGMT_SETTING_SIZE },
7434 { set_privacy, MGMT_SET_PRIVACY_SIZE },
7435 { load_irks, MGMT_LOAD_IRKS_SIZE,
7436 HCI_MGMT_VAR_LEN },
7437 { get_conn_info, MGMT_GET_CONN_INFO_SIZE },
7438 { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE },
7439 { add_device, MGMT_ADD_DEVICE_SIZE },
7440 { remove_device, MGMT_REMOVE_DEVICE_SIZE },
7441 { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE,
7442 HCI_MGMT_VAR_LEN },
7443 { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE,
7444 HCI_MGMT_NO_HDEV |
7445 HCI_MGMT_UNTRUSTED },
7446 { read_config_info, MGMT_READ_CONFIG_INFO_SIZE,
7447 HCI_MGMT_UNCONFIGURED |
7448 HCI_MGMT_UNTRUSTED },
7449 { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE,
7450 HCI_MGMT_UNCONFIGURED },
7451 { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE,
7452 HCI_MGMT_UNCONFIGURED },
7453 { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE,
7454 HCI_MGMT_VAR_LEN },
7455 { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE },
7456 { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE,
7457 HCI_MGMT_NO_HDEV |
7458 HCI_MGMT_UNTRUSTED },
7459 { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE },
7460 { add_advertising, MGMT_ADD_ADVERTISING_SIZE,
7461 HCI_MGMT_VAR_LEN },
7462 { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE },
7463 };
7464
mgmt_index_added(struct hci_dev * hdev)7465 void mgmt_index_added(struct hci_dev *hdev)
7466 {
7467 struct mgmt_ev_ext_index ev;
7468
7469 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7470 return;
7471
7472 switch (hdev->dev_type) {
7473 case HCI_BREDR:
7474 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7475 mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev,
7476 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7477 ev.type = 0x01;
7478 } else {
7479 mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0,
7480 HCI_MGMT_INDEX_EVENTS);
7481 ev.type = 0x00;
7482 }
7483 break;
7484 case HCI_AMP:
7485 ev.type = 0x02;
7486 break;
7487 default:
7488 return;
7489 }
7490
7491 ev.bus = hdev->bus;
7492
7493 mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev),
7494 HCI_MGMT_EXT_INDEX_EVENTS);
7495 }
7496
mgmt_index_removed(struct hci_dev * hdev)7497 void mgmt_index_removed(struct hci_dev *hdev)
7498 {
7499 struct mgmt_ev_ext_index ev;
7500 u8 status = MGMT_STATUS_INVALID_INDEX;
7501
7502 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7503 return;
7504
7505 switch (hdev->dev_type) {
7506 case HCI_BREDR:
7507 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7508
7509 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7510 mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev,
7511 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7512 ev.type = 0x01;
7513 } else {
7514 mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0,
7515 HCI_MGMT_INDEX_EVENTS);
7516 ev.type = 0x00;
7517 }
7518 break;
7519 case HCI_AMP:
7520 ev.type = 0x02;
7521 break;
7522 default:
7523 return;
7524 }
7525
7526 ev.bus = hdev->bus;
7527
7528 mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev),
7529 HCI_MGMT_EXT_INDEX_EVENTS);
7530 }
7531
7532 /* This function requires the caller holds hdev->lock */
restart_le_actions(struct hci_request * req)7533 static void restart_le_actions(struct hci_request *req)
7534 {
7535 struct hci_dev *hdev = req->hdev;
7536 struct hci_conn_params *p;
7537
7538 list_for_each_entry(p, &hdev->le_conn_params, list) {
7539 /* Needed for AUTO_OFF case where might not "really"
7540 * have been powered off.
7541 */
7542 list_del_init(&p->action);
7543
7544 switch (p->auto_connect) {
7545 case HCI_AUTO_CONN_DIRECT:
7546 case HCI_AUTO_CONN_ALWAYS:
7547 list_add(&p->action, &hdev->pend_le_conns);
7548 break;
7549 case HCI_AUTO_CONN_REPORT:
7550 list_add(&p->action, &hdev->pend_le_reports);
7551 break;
7552 default:
7553 break;
7554 }
7555 }
7556
7557 __hci_update_background_scan(req);
7558 }
7559
powered_complete(struct hci_dev * hdev,u8 status,u16 opcode)7560 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7561 {
7562 struct cmd_lookup match = { NULL, hdev };
7563
7564 BT_DBG("status 0x%02x", status);
7565
7566 if (!status) {
7567 /* Register the available SMP channels (BR/EDR and LE) only
7568 * when successfully powering on the controller. This late
7569 * registration is required so that LE SMP can clearly
7570 * decide if the public address or static address is used.
7571 */
7572 smp_register(hdev);
7573 }
7574
7575 hci_dev_lock(hdev);
7576
7577 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7578
7579 new_settings(hdev, match.sk);
7580
7581 hci_dev_unlock(hdev);
7582
7583 if (match.sk)
7584 sock_put(match.sk);
7585 }
7586
powered_update_hci(struct hci_dev * hdev)7587 static int powered_update_hci(struct hci_dev *hdev)
7588 {
7589 struct hci_request req;
7590 struct adv_info *adv_instance;
7591 u8 link_sec;
7592
7593 hci_req_init(&req, hdev);
7594
7595 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
7596 !lmp_host_ssp_capable(hdev)) {
7597 u8 mode = 0x01;
7598
7599 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
7600
7601 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
7602 u8 support = 0x01;
7603
7604 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
7605 sizeof(support), &support);
7606 }
7607 }
7608
7609 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7610 lmp_bredr_capable(hdev)) {
7611 struct hci_cp_write_le_host_supported cp;
7612
7613 cp.le = 0x01;
7614 cp.simul = 0x00;
7615
7616 /* Check first if we already have the right
7617 * host state (host features set)
7618 */
7619 if (cp.le != lmp_host_le_capable(hdev) ||
7620 cp.simul != lmp_host_le_br_capable(hdev))
7621 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
7622 sizeof(cp), &cp);
7623 }
7624
7625 if (lmp_le_capable(hdev)) {
7626 /* Make sure the controller has a good default for
7627 * advertising data. This also applies to the case
7628 * where BR/EDR was toggled during the AUTO_OFF phase.
7629 */
7630 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7631 (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7632 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) {
7633 update_adv_data(&req);
7634 update_scan_rsp_data(&req);
7635 }
7636
7637 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7638 hdev->cur_adv_instance == 0x00 &&
7639 !list_empty(&hdev->adv_instances)) {
7640 adv_instance = list_first_entry(&hdev->adv_instances,
7641 struct adv_info, list);
7642 hdev->cur_adv_instance = adv_instance->instance;
7643 }
7644
7645 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7646 enable_advertising(&req);
7647 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7648 hdev->cur_adv_instance)
7649 schedule_adv_instance(&req, hdev->cur_adv_instance,
7650 true);
7651
7652 restart_le_actions(&req);
7653 }
7654
7655 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
7656 if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
7657 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
7658 sizeof(link_sec), &link_sec);
7659
7660 if (lmp_bredr_capable(hdev)) {
7661 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
7662 write_fast_connectable(&req, true);
7663 else
7664 write_fast_connectable(&req, false);
7665 __hci_update_page_scan(&req);
7666 update_class(&req);
7667 update_name(&req);
7668 update_eir(&req);
7669 }
7670
7671 return hci_req_run(&req, powered_complete);
7672 }
7673
mgmt_powered(struct hci_dev * hdev,u8 powered)7674 int mgmt_powered(struct hci_dev *hdev, u8 powered)
7675 {
7676 struct cmd_lookup match = { NULL, hdev };
7677 u8 status, zero_cod[] = { 0, 0, 0 };
7678 int err;
7679
7680 if (!hci_dev_test_flag(hdev, HCI_MGMT))
7681 return 0;
7682
7683 if (powered) {
7684 if (powered_update_hci(hdev) == 0)
7685 return 0;
7686
7687 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
7688 &match);
7689 goto new_settings;
7690 }
7691
7692 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7693
7694 /* If the power off is because of hdev unregistration let
7695 * use the appropriate INVALID_INDEX status. Otherwise use
7696 * NOT_POWERED. We cover both scenarios here since later in
7697 * mgmt_index_removed() any hci_conn callbacks will have already
7698 * been triggered, potentially causing misleading DISCONNECTED
7699 * status responses.
7700 */
7701 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
7702 status = MGMT_STATUS_INVALID_INDEX;
7703 else
7704 status = MGMT_STATUS_NOT_POWERED;
7705
7706 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7707
7708 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
7709 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
7710 zero_cod, sizeof(zero_cod), NULL);
7711
7712 new_settings:
7713 err = new_settings(hdev, match.sk);
7714
7715 if (match.sk)
7716 sock_put(match.sk);
7717
7718 return err;
7719 }
7720
mgmt_set_powered_failed(struct hci_dev * hdev,int err)7721 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
7722 {
7723 struct mgmt_pending_cmd *cmd;
7724 u8 status;
7725
7726 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7727 if (!cmd)
7728 return;
7729
7730 if (err == -ERFKILL)
7731 status = MGMT_STATUS_RFKILLED;
7732 else
7733 status = MGMT_STATUS_FAILED;
7734
7735 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
7736
7737 mgmt_pending_remove(cmd);
7738 }
7739
mgmt_discoverable_timeout(struct hci_dev * hdev)7740 void mgmt_discoverable_timeout(struct hci_dev *hdev)
7741 {
7742 struct hci_request req;
7743
7744 hci_dev_lock(hdev);
7745
7746 /* When discoverable timeout triggers, then just make sure
7747 * the limited discoverable flag is cleared. Even in the case
7748 * of a timeout triggered from general discoverable, it is
7749 * safe to unconditionally clear the flag.
7750 */
7751 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
7752 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
7753
7754 hci_req_init(&req, hdev);
7755 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
7756 u8 scan = SCAN_PAGE;
7757 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
7758 sizeof(scan), &scan);
7759 }
7760 update_class(&req);
7761
7762 /* Advertising instances don't use the global discoverable setting, so
7763 * only update AD if advertising was enabled using Set Advertising.
7764 */
7765 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7766 update_adv_data(&req);
7767
7768 hci_req_run(&req, NULL);
7769
7770 hdev->discov_timeout = 0;
7771
7772 new_settings(hdev, NULL);
7773
7774 hci_dev_unlock(hdev);
7775 }
7776
mgmt_new_link_key(struct hci_dev * hdev,struct link_key * key,bool persistent)7777 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
7778 bool persistent)
7779 {
7780 struct mgmt_ev_new_link_key ev;
7781
7782 memset(&ev, 0, sizeof(ev));
7783
7784 ev.store_hint = persistent;
7785 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7786 ev.key.addr.type = BDADDR_BREDR;
7787 ev.key.type = key->type;
7788 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
7789 ev.key.pin_len = key->pin_len;
7790
7791 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
7792 }
7793
mgmt_ltk_type(struct smp_ltk * ltk)7794 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
7795 {
7796 switch (ltk->type) {
7797 case SMP_LTK:
7798 case SMP_LTK_SLAVE:
7799 if (ltk->authenticated)
7800 return MGMT_LTK_AUTHENTICATED;
7801 return MGMT_LTK_UNAUTHENTICATED;
7802 case SMP_LTK_P256:
7803 if (ltk->authenticated)
7804 return MGMT_LTK_P256_AUTH;
7805 return MGMT_LTK_P256_UNAUTH;
7806 case SMP_LTK_P256_DEBUG:
7807 return MGMT_LTK_P256_DEBUG;
7808 }
7809
7810 return MGMT_LTK_UNAUTHENTICATED;
7811 }
7812
mgmt_new_ltk(struct hci_dev * hdev,struct smp_ltk * key,bool persistent)7813 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
7814 {
7815 struct mgmt_ev_new_long_term_key ev;
7816
7817 memset(&ev, 0, sizeof(ev));
7818
7819 /* Devices using resolvable or non-resolvable random addresses
7820 * without providing an identity resolving key don't require
7821 * to store long term keys. Their addresses will change the
7822 * next time around.
7823 *
7824 * Only when a remote device provides an identity address
7825 * make sure the long term key is stored. If the remote
7826 * identity is known, the long term keys are internally
7827 * mapped to the identity address. So allow static random
7828 * and public addresses here.
7829 */
7830 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7831 (key->bdaddr.b[5] & 0xc0) != 0xc0)
7832 ev.store_hint = 0x00;
7833 else
7834 ev.store_hint = persistent;
7835
7836 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7837 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
7838 ev.key.type = mgmt_ltk_type(key);
7839 ev.key.enc_size = key->enc_size;
7840 ev.key.ediv = key->ediv;
7841 ev.key.rand = key->rand;
7842
7843 if (key->type == SMP_LTK)
7844 ev.key.master = 1;
7845
7846 /* Make sure we copy only the significant bytes based on the
7847 * encryption key size, and set the rest of the value to zeroes.
7848 */
7849 memcpy(ev.key.val, key->val, key->enc_size);
7850 memset(ev.key.val + key->enc_size, 0,
7851 sizeof(ev.key.val) - key->enc_size);
7852
7853 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
7854 }
7855
mgmt_new_irk(struct hci_dev * hdev,struct smp_irk * irk,bool persistent)7856 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent)
7857 {
7858 struct mgmt_ev_new_irk ev;
7859
7860 memset(&ev, 0, sizeof(ev));
7861
7862 ev.store_hint = persistent;
7863
7864 bacpy(&ev.rpa, &irk->rpa);
7865 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
7866 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
7867 memcpy(ev.irk.val, irk->val, sizeof(irk->val));
7868
7869 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
7870 }
7871
mgmt_new_csrk(struct hci_dev * hdev,struct smp_csrk * csrk,bool persistent)7872 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
7873 bool persistent)
7874 {
7875 struct mgmt_ev_new_csrk ev;
7876
7877 memset(&ev, 0, sizeof(ev));
7878
7879 /* Devices using resolvable or non-resolvable random addresses
7880 * without providing an identity resolving key don't require
7881 * to store signature resolving keys. Their addresses will change
7882 * the next time around.
7883 *
7884 * Only when a remote device provides an identity address
7885 * make sure the signature resolving key is stored. So allow
7886 * static random and public addresses here.
7887 */
7888 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7889 (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
7890 ev.store_hint = 0x00;
7891 else
7892 ev.store_hint = persistent;
7893
7894 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
7895 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
7896 ev.key.type = csrk->type;
7897 memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
7898
7899 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
7900 }
7901
mgmt_new_conn_param(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 bdaddr_type,u8 store_hint,u16 min_interval,u16 max_interval,u16 latency,u16 timeout)7902 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
7903 u8 bdaddr_type, u8 store_hint, u16 min_interval,
7904 u16 max_interval, u16 latency, u16 timeout)
7905 {
7906 struct mgmt_ev_new_conn_param ev;
7907
7908 if (!hci_is_identity_address(bdaddr, bdaddr_type))
7909 return;
7910
7911 memset(&ev, 0, sizeof(ev));
7912 bacpy(&ev.addr.bdaddr, bdaddr);
7913 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
7914 ev.store_hint = store_hint;
7915 ev.min_interval = cpu_to_le16(min_interval);
7916 ev.max_interval = cpu_to_le16(max_interval);
7917 ev.latency = cpu_to_le16(latency);
7918 ev.timeout = cpu_to_le16(timeout);
7919
7920 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
7921 }
7922
mgmt_device_connected(struct hci_dev * hdev,struct hci_conn * conn,u32 flags,u8 * name,u8 name_len)7923 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
7924 u32 flags, u8 *name, u8 name_len)
7925 {
7926 char buf[512];
7927 struct mgmt_ev_device_connected *ev = (void *) buf;
7928 u16 eir_len = 0;
7929
7930 bacpy(&ev->addr.bdaddr, &conn->dst);
7931 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
7932
7933 ev->flags = __cpu_to_le32(flags);
7934
7935 /* We must ensure that the EIR Data fields are ordered and
7936 * unique. Keep it simple for now and avoid the problem by not
7937 * adding any BR/EDR data to the LE adv.
7938 */
7939 if (conn->le_adv_data_len > 0) {
7940 memcpy(&ev->eir[eir_len],
7941 conn->le_adv_data, conn->le_adv_data_len);
7942 eir_len = conn->le_adv_data_len;
7943 } else {
7944 if (name_len > 0)
7945 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
7946 name, name_len);
7947
7948 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
7949 eir_len = eir_append_data(ev->eir, eir_len,
7950 EIR_CLASS_OF_DEV,
7951 conn->dev_class, 3);
7952 }
7953
7954 ev->eir_len = cpu_to_le16(eir_len);
7955
7956 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
7957 sizeof(*ev) + eir_len, NULL);
7958 }
7959
disconnect_rsp(struct mgmt_pending_cmd * cmd,void * data)7960 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data)
7961 {
7962 struct sock **sk = data;
7963
7964 cmd->cmd_complete(cmd, 0);
7965
7966 *sk = cmd->sk;
7967 sock_hold(*sk);
7968
7969 mgmt_pending_remove(cmd);
7970 }
7971
unpair_device_rsp(struct mgmt_pending_cmd * cmd,void * data)7972 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data)
7973 {
7974 struct hci_dev *hdev = data;
7975 struct mgmt_cp_unpair_device *cp = cmd->param;
7976
7977 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
7978
7979 cmd->cmd_complete(cmd, 0);
7980 mgmt_pending_remove(cmd);
7981 }
7982
mgmt_powering_down(struct hci_dev * hdev)7983 bool mgmt_powering_down(struct hci_dev *hdev)
7984 {
7985 struct mgmt_pending_cmd *cmd;
7986 struct mgmt_mode *cp;
7987
7988 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7989 if (!cmd)
7990 return false;
7991
7992 cp = cmd->param;
7993 if (!cp->val)
7994 return true;
7995
7996 return false;
7997 }
7998
mgmt_device_disconnected(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 reason,bool mgmt_connected)7999 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
8000 u8 link_type, u8 addr_type, u8 reason,
8001 bool mgmt_connected)
8002 {
8003 struct mgmt_ev_device_disconnected ev;
8004 struct sock *sk = NULL;
8005
8006 /* The connection is still in hci_conn_hash so test for 1
8007 * instead of 0 to know if this is the last one.
8008 */
8009 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8010 cancel_delayed_work(&hdev->power_off);
8011 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8012 }
8013
8014 if (!mgmt_connected)
8015 return;
8016
8017 if (link_type != ACL_LINK && link_type != LE_LINK)
8018 return;
8019
8020 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
8021
8022 bacpy(&ev.addr.bdaddr, bdaddr);
8023 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8024 ev.reason = reason;
8025
8026 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
8027
8028 if (sk)
8029 sock_put(sk);
8030
8031 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8032 hdev);
8033 }
8034
mgmt_disconnect_failed(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8035 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
8036 u8 link_type, u8 addr_type, u8 status)
8037 {
8038 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
8039 struct mgmt_cp_disconnect *cp;
8040 struct mgmt_pending_cmd *cmd;
8041
8042 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8043 hdev);
8044
8045 cmd = pending_find(MGMT_OP_DISCONNECT, hdev);
8046 if (!cmd)
8047 return;
8048
8049 cp = cmd->param;
8050
8051 if (bacmp(bdaddr, &cp->addr.bdaddr))
8052 return;
8053
8054 if (cp->addr.type != bdaddr_type)
8055 return;
8056
8057 cmd->cmd_complete(cmd, mgmt_status(status));
8058 mgmt_pending_remove(cmd);
8059 }
8060
mgmt_connect_failed(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8061 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8062 u8 addr_type, u8 status)
8063 {
8064 struct mgmt_ev_connect_failed ev;
8065
8066 /* The connection is still in hci_conn_hash so test for 1
8067 * instead of 0 to know if this is the last one.
8068 */
8069 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8070 cancel_delayed_work(&hdev->power_off);
8071 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8072 }
8073
8074 bacpy(&ev.addr.bdaddr, bdaddr);
8075 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8076 ev.status = mgmt_status(status);
8077
8078 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
8079 }
8080
mgmt_pin_code_request(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 secure)8081 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
8082 {
8083 struct mgmt_ev_pin_code_request ev;
8084
8085 bacpy(&ev.addr.bdaddr, bdaddr);
8086 ev.addr.type = BDADDR_BREDR;
8087 ev.secure = secure;
8088
8089 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
8090 }
8091
mgmt_pin_code_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 status)8092 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8093 u8 status)
8094 {
8095 struct mgmt_pending_cmd *cmd;
8096
8097 cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
8098 if (!cmd)
8099 return;
8100
8101 cmd->cmd_complete(cmd, mgmt_status(status));
8102 mgmt_pending_remove(cmd);
8103 }
8104
mgmt_pin_code_neg_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 status)8105 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8106 u8 status)
8107 {
8108 struct mgmt_pending_cmd *cmd;
8109
8110 cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
8111 if (!cmd)
8112 return;
8113
8114 cmd->cmd_complete(cmd, mgmt_status(status));
8115 mgmt_pending_remove(cmd);
8116 }
8117
mgmt_user_confirm_request(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u32 value,u8 confirm_hint)8118 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8119 u8 link_type, u8 addr_type, u32 value,
8120 u8 confirm_hint)
8121 {
8122 struct mgmt_ev_user_confirm_request ev;
8123
8124 BT_DBG("%s", hdev->name);
8125
8126 bacpy(&ev.addr.bdaddr, bdaddr);
8127 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8128 ev.confirm_hint = confirm_hint;
8129 ev.value = cpu_to_le32(value);
8130
8131 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
8132 NULL);
8133 }
8134
mgmt_user_passkey_request(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type)8135 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8136 u8 link_type, u8 addr_type)
8137 {
8138 struct mgmt_ev_user_passkey_request ev;
8139
8140 BT_DBG("%s", hdev->name);
8141
8142 bacpy(&ev.addr.bdaddr, bdaddr);
8143 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8144
8145 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
8146 NULL);
8147 }
8148
user_pairing_resp_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status,u8 opcode)8149 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8150 u8 link_type, u8 addr_type, u8 status,
8151 u8 opcode)
8152 {
8153 struct mgmt_pending_cmd *cmd;
8154
8155 cmd = pending_find(opcode, hdev);
8156 if (!cmd)
8157 return -ENOENT;
8158
8159 cmd->cmd_complete(cmd, mgmt_status(status));
8160 mgmt_pending_remove(cmd);
8161
8162 return 0;
8163 }
8164
mgmt_user_confirm_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8165 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8166 u8 link_type, u8 addr_type, u8 status)
8167 {
8168 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8169 status, MGMT_OP_USER_CONFIRM_REPLY);
8170 }
8171
mgmt_user_confirm_neg_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8172 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8173 u8 link_type, u8 addr_type, u8 status)
8174 {
8175 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8176 status,
8177 MGMT_OP_USER_CONFIRM_NEG_REPLY);
8178 }
8179
mgmt_user_passkey_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8180 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8181 u8 link_type, u8 addr_type, u8 status)
8182 {
8183 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8184 status, MGMT_OP_USER_PASSKEY_REPLY);
8185 }
8186
mgmt_user_passkey_neg_reply_complete(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 status)8187 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8188 u8 link_type, u8 addr_type, u8 status)
8189 {
8190 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8191 status,
8192 MGMT_OP_USER_PASSKEY_NEG_REPLY);
8193 }
8194
mgmt_user_passkey_notify(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u32 passkey,u8 entered)8195 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
8196 u8 link_type, u8 addr_type, u32 passkey,
8197 u8 entered)
8198 {
8199 struct mgmt_ev_passkey_notify ev;
8200
8201 BT_DBG("%s", hdev->name);
8202
8203 bacpy(&ev.addr.bdaddr, bdaddr);
8204 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8205 ev.passkey = __cpu_to_le32(passkey);
8206 ev.entered = entered;
8207
8208 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
8209 }
8210
mgmt_auth_failed(struct hci_conn * conn,u8 hci_status)8211 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
8212 {
8213 struct mgmt_ev_auth_failed ev;
8214 struct mgmt_pending_cmd *cmd;
8215 u8 status = mgmt_status(hci_status);
8216
8217 bacpy(&ev.addr.bdaddr, &conn->dst);
8218 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
8219 ev.status = status;
8220
8221 cmd = find_pairing(conn);
8222
8223 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
8224 cmd ? cmd->sk : NULL);
8225
8226 if (cmd) {
8227 cmd->cmd_complete(cmd, status);
8228 mgmt_pending_remove(cmd);
8229 }
8230 }
8231
mgmt_auth_enable_complete(struct hci_dev * hdev,u8 status)8232 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
8233 {
8234 struct cmd_lookup match = { NULL, hdev };
8235 bool changed;
8236
8237 if (status) {
8238 u8 mgmt_err = mgmt_status(status);
8239 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
8240 cmd_status_rsp, &mgmt_err);
8241 return;
8242 }
8243
8244 if (test_bit(HCI_AUTH, &hdev->flags))
8245 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
8246 else
8247 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
8248
8249 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
8250 &match);
8251
8252 if (changed)
8253 new_settings(hdev, match.sk);
8254
8255 if (match.sk)
8256 sock_put(match.sk);
8257 }
8258
clear_eir(struct hci_request * req)8259 static void clear_eir(struct hci_request *req)
8260 {
8261 struct hci_dev *hdev = req->hdev;
8262 struct hci_cp_write_eir cp;
8263
8264 if (!lmp_ext_inq_capable(hdev))
8265 return;
8266
8267 memset(hdev->eir, 0, sizeof(hdev->eir));
8268
8269 memset(&cp, 0, sizeof(cp));
8270
8271 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
8272 }
8273
mgmt_ssp_enable_complete(struct hci_dev * hdev,u8 enable,u8 status)8274 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
8275 {
8276 struct cmd_lookup match = { NULL, hdev };
8277 struct hci_request req;
8278 bool changed = false;
8279
8280 if (status) {
8281 u8 mgmt_err = mgmt_status(status);
8282
8283 if (enable && hci_dev_test_and_clear_flag(hdev,
8284 HCI_SSP_ENABLED)) {
8285 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8286 new_settings(hdev, NULL);
8287 }
8288
8289 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
8290 &mgmt_err);
8291 return;
8292 }
8293
8294 if (enable) {
8295 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
8296 } else {
8297 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
8298 if (!changed)
8299 changed = hci_dev_test_and_clear_flag(hdev,
8300 HCI_HS_ENABLED);
8301 else
8302 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8303 }
8304
8305 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
8306
8307 if (changed)
8308 new_settings(hdev, match.sk);
8309
8310 if (match.sk)
8311 sock_put(match.sk);
8312
8313 hci_req_init(&req, hdev);
8314
8315 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
8316 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
8317 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
8318 sizeof(enable), &enable);
8319 update_eir(&req);
8320 } else {
8321 clear_eir(&req);
8322 }
8323
8324 hci_req_run(&req, NULL);
8325 }
8326
sk_lookup(struct mgmt_pending_cmd * cmd,void * data)8327 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data)
8328 {
8329 struct cmd_lookup *match = data;
8330
8331 if (match->sk == NULL) {
8332 match->sk = cmd->sk;
8333 sock_hold(match->sk);
8334 }
8335 }
8336
mgmt_set_class_of_dev_complete(struct hci_dev * hdev,u8 * dev_class,u8 status)8337 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
8338 u8 status)
8339 {
8340 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
8341
8342 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
8343 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
8344 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
8345
8346 if (!status)
8347 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
8348 dev_class, 3, NULL);
8349
8350 if (match.sk)
8351 sock_put(match.sk);
8352 }
8353
mgmt_set_local_name_complete(struct hci_dev * hdev,u8 * name,u8 status)8354 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
8355 {
8356 struct mgmt_cp_set_local_name ev;
8357 struct mgmt_pending_cmd *cmd;
8358
8359 if (status)
8360 return;
8361
8362 memset(&ev, 0, sizeof(ev));
8363 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
8364 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
8365
8366 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
8367 if (!cmd) {
8368 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
8369
8370 /* If this is a HCI command related to powering on the
8371 * HCI dev don't send any mgmt signals.
8372 */
8373 if (pending_find(MGMT_OP_SET_POWERED, hdev))
8374 return;
8375 }
8376
8377 mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
8378 cmd ? cmd->sk : NULL);
8379 }
8380
has_uuid(u8 * uuid,u16 uuid_count,u8 (* uuids)[16])8381 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
8382 {
8383 int i;
8384
8385 for (i = 0; i < uuid_count; i++) {
8386 if (!memcmp(uuid, uuids[i], 16))
8387 return true;
8388 }
8389
8390 return false;
8391 }
8392
eir_has_uuids(u8 * eir,u16 eir_len,u16 uuid_count,u8 (* uuids)[16])8393 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
8394 {
8395 u16 parsed = 0;
8396
8397 while (parsed < eir_len) {
8398 u8 field_len = eir[0];
8399 u8 uuid[16];
8400 int i;
8401
8402 if (field_len == 0)
8403 break;
8404
8405 if (eir_len - parsed < field_len + 1)
8406 break;
8407
8408 switch (eir[1]) {
8409 case EIR_UUID16_ALL:
8410 case EIR_UUID16_SOME:
8411 for (i = 0; i + 3 <= field_len; i += 2) {
8412 memcpy(uuid, bluetooth_base_uuid, 16);
8413 uuid[13] = eir[i + 3];
8414 uuid[12] = eir[i + 2];
8415 if (has_uuid(uuid, uuid_count, uuids))
8416 return true;
8417 }
8418 break;
8419 case EIR_UUID32_ALL:
8420 case EIR_UUID32_SOME:
8421 for (i = 0; i + 5 <= field_len; i += 4) {
8422 memcpy(uuid, bluetooth_base_uuid, 16);
8423 uuid[15] = eir[i + 5];
8424 uuid[14] = eir[i + 4];
8425 uuid[13] = eir[i + 3];
8426 uuid[12] = eir[i + 2];
8427 if (has_uuid(uuid, uuid_count, uuids))
8428 return true;
8429 }
8430 break;
8431 case EIR_UUID128_ALL:
8432 case EIR_UUID128_SOME:
8433 for (i = 0; i + 17 <= field_len; i += 16) {
8434 memcpy(uuid, eir + i + 2, 16);
8435 if (has_uuid(uuid, uuid_count, uuids))
8436 return true;
8437 }
8438 break;
8439 }
8440
8441 parsed += field_len + 1;
8442 eir += field_len + 1;
8443 }
8444
8445 return false;
8446 }
8447
restart_le_scan(struct hci_dev * hdev)8448 static void restart_le_scan(struct hci_dev *hdev)
8449 {
8450 /* If controller is not scanning we are done. */
8451 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
8452 return;
8453
8454 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
8455 hdev->discovery.scan_start +
8456 hdev->discovery.scan_duration))
8457 return;
8458
8459 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
8460 DISCOV_LE_RESTART_DELAY);
8461 }
8462
is_filter_match(struct hci_dev * hdev,s8 rssi,u8 * eir,u16 eir_len,u8 * scan_rsp,u8 scan_rsp_len)8463 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir,
8464 u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8465 {
8466 /* If a RSSI threshold has been specified, and
8467 * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with
8468 * a RSSI smaller than the RSSI threshold will be dropped. If the quirk
8469 * is set, let it through for further processing, as we might need to
8470 * restart the scan.
8471 *
8472 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
8473 * the results are also dropped.
8474 */
8475 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8476 (rssi == HCI_RSSI_INVALID ||
8477 (rssi < hdev->discovery.rssi &&
8478 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
8479 return false;
8480
8481 if (hdev->discovery.uuid_count != 0) {
8482 /* If a list of UUIDs is provided in filter, results with no
8483 * matching UUID should be dropped.
8484 */
8485 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count,
8486 hdev->discovery.uuids) &&
8487 !eir_has_uuids(scan_rsp, scan_rsp_len,
8488 hdev->discovery.uuid_count,
8489 hdev->discovery.uuids))
8490 return false;
8491 }
8492
8493 /* If duplicate filtering does not report RSSI changes, then restart
8494 * scanning to ensure updated result with updated RSSI values.
8495 */
8496 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) {
8497 restart_le_scan(hdev);
8498
8499 /* Validate RSSI value against the RSSI threshold once more. */
8500 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8501 rssi < hdev->discovery.rssi)
8502 return false;
8503 }
8504
8505 return true;
8506 }
8507
mgmt_device_found(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,u8 * dev_class,s8 rssi,u32 flags,u8 * eir,u16 eir_len,u8 * scan_rsp,u8 scan_rsp_len)8508 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8509 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
8510 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8511 {
8512 char buf[512];
8513 struct mgmt_ev_device_found *ev = (void *)buf;
8514 size_t ev_size;
8515
8516 /* Don't send events for a non-kernel initiated discovery. With
8517 * LE one exception is if we have pend_le_reports > 0 in which
8518 * case we're doing passive scanning and want these events.
8519 */
8520 if (!hci_discovery_active(hdev)) {
8521 if (link_type == ACL_LINK)
8522 return;
8523 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
8524 return;
8525 }
8526
8527 if (hdev->discovery.result_filtering) {
8528 /* We are using service discovery */
8529 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp,
8530 scan_rsp_len))
8531 return;
8532 }
8533
8534 /* Make sure that the buffer is big enough. The 5 extra bytes
8535 * are for the potential CoD field.
8536 */
8537 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
8538 return;
8539
8540 memset(buf, 0, sizeof(buf));
8541
8542 /* In case of device discovery with BR/EDR devices (pre 1.2), the
8543 * RSSI value was reported as 0 when not available. This behavior
8544 * is kept when using device discovery. This is required for full
8545 * backwards compatibility with the API.
8546 *
8547 * However when using service discovery, the value 127 will be
8548 * returned when the RSSI is not available.
8549 */
8550 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
8551 link_type == ACL_LINK)
8552 rssi = 0;
8553
8554 bacpy(&ev->addr.bdaddr, bdaddr);
8555 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8556 ev->rssi = rssi;
8557 ev->flags = cpu_to_le32(flags);
8558
8559 if (eir_len > 0)
8560 /* Copy EIR or advertising data into event */
8561 memcpy(ev->eir, eir, eir_len);
8562
8563 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
8564 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
8565 dev_class, 3);
8566
8567 if (scan_rsp_len > 0)
8568 /* Append scan response data to event */
8569 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
8570
8571 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
8572 ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
8573
8574 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
8575 }
8576
mgmt_remote_name(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 link_type,u8 addr_type,s8 rssi,u8 * name,u8 name_len)8577 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8578 u8 addr_type, s8 rssi, u8 *name, u8 name_len)
8579 {
8580 struct mgmt_ev_device_found *ev;
8581 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
8582 u16 eir_len;
8583
8584 ev = (struct mgmt_ev_device_found *) buf;
8585
8586 memset(buf, 0, sizeof(buf));
8587
8588 bacpy(&ev->addr.bdaddr, bdaddr);
8589 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8590 ev->rssi = rssi;
8591
8592 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
8593 name_len);
8594
8595 ev->eir_len = cpu_to_le16(eir_len);
8596
8597 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
8598 }
8599
mgmt_discovering(struct hci_dev * hdev,u8 discovering)8600 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
8601 {
8602 struct mgmt_ev_discovering ev;
8603
8604 BT_DBG("%s discovering %u", hdev->name, discovering);
8605
8606 memset(&ev, 0, sizeof(ev));
8607 ev.type = hdev->discovery.type;
8608 ev.discovering = discovering;
8609
8610 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
8611 }
8612
adv_enable_complete(struct hci_dev * hdev,u8 status,u16 opcode)8613 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
8614 {
8615 BT_DBG("%s status %u", hdev->name, status);
8616 }
8617
mgmt_reenable_advertising(struct hci_dev * hdev)8618 void mgmt_reenable_advertising(struct hci_dev *hdev)
8619 {
8620 struct hci_request req;
8621 u8 instance;
8622
8623 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
8624 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
8625 return;
8626
8627 instance = get_current_adv_instance(hdev);
8628
8629 hci_req_init(&req, hdev);
8630
8631 if (instance) {
8632 schedule_adv_instance(&req, instance, true);
8633 } else {
8634 update_adv_data(&req);
8635 update_scan_rsp_data(&req);
8636 enable_advertising(&req);
8637 }
8638
8639 hci_req_run(&req, adv_enable_complete);
8640 }
8641
8642 static struct hci_mgmt_chan chan = {
8643 .channel = HCI_CHANNEL_CONTROL,
8644 .handler_count = ARRAY_SIZE(mgmt_handlers),
8645 .handlers = mgmt_handlers,
8646 .hdev_init = mgmt_init_hdev,
8647 };
8648
mgmt_init(void)8649 int mgmt_init(void)
8650 {
8651 return hci_mgmt_chan_register(&chan);
8652 }
8653
mgmt_exit(void)8654 void mgmt_exit(void)
8655 {
8656 hci_mgmt_chan_unregister(&chan);
8657 }
8658