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ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks
[linux/fpc-iii.git] / net / bluetooth / mgmt.c
blobecc3da6a14a18b5528318b1bdf6ce80c3934ba0f
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3
4 Copyright (C) 2010 Nokia Corporation
5 Copyright (C) 2011-2012 Intel Corporation
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 /* Bluetooth HCI Management interface */
26
27 #include <linux/module.h>
28 #include <asm/unaligned.h>
29
30 #include <net/bluetooth/bluetooth.h>
31 #include <net/bluetooth/hci_core.h>
32 #include <net/bluetooth/hci_sock.h>
33 #include <net/bluetooth/l2cap.h>
34 #include <net/bluetooth/mgmt.h>
35
36 #include "hci_request.h"
37 #include "smp.h"
38 #include "mgmt_util.h"
39
40 #define MGMT_VERSION 1
41 #define MGMT_REVISION 10
42
43 static const u16 mgmt_commands[] = {
44 MGMT_OP_READ_INDEX_LIST,
45 MGMT_OP_READ_INFO,
46 MGMT_OP_SET_POWERED,
47 MGMT_OP_SET_DISCOVERABLE,
48 MGMT_OP_SET_CONNECTABLE,
49 MGMT_OP_SET_FAST_CONNECTABLE,
50 MGMT_OP_SET_BONDABLE,
51 MGMT_OP_SET_LINK_SECURITY,
52 MGMT_OP_SET_SSP,
53 MGMT_OP_SET_HS,
54 MGMT_OP_SET_LE,
55 MGMT_OP_SET_DEV_CLASS,
56 MGMT_OP_SET_LOCAL_NAME,
57 MGMT_OP_ADD_UUID,
58 MGMT_OP_REMOVE_UUID,
59 MGMT_OP_LOAD_LINK_KEYS,
60 MGMT_OP_LOAD_LONG_TERM_KEYS,
61 MGMT_OP_DISCONNECT,
62 MGMT_OP_GET_CONNECTIONS,
63 MGMT_OP_PIN_CODE_REPLY,
64 MGMT_OP_PIN_CODE_NEG_REPLY,
65 MGMT_OP_SET_IO_CAPABILITY,
66 MGMT_OP_PAIR_DEVICE,
67 MGMT_OP_CANCEL_PAIR_DEVICE,
68 MGMT_OP_UNPAIR_DEVICE,
69 MGMT_OP_USER_CONFIRM_REPLY,
70 MGMT_OP_USER_CONFIRM_NEG_REPLY,
71 MGMT_OP_USER_PASSKEY_REPLY,
72 MGMT_OP_USER_PASSKEY_NEG_REPLY,
73 MGMT_OP_READ_LOCAL_OOB_DATA,
74 MGMT_OP_ADD_REMOTE_OOB_DATA,
75 MGMT_OP_REMOVE_REMOTE_OOB_DATA,
76 MGMT_OP_START_DISCOVERY,
77 MGMT_OP_STOP_DISCOVERY,
78 MGMT_OP_CONFIRM_NAME,
79 MGMT_OP_BLOCK_DEVICE,
80 MGMT_OP_UNBLOCK_DEVICE,
81 MGMT_OP_SET_DEVICE_ID,
82 MGMT_OP_SET_ADVERTISING,
83 MGMT_OP_SET_BREDR,
84 MGMT_OP_SET_STATIC_ADDRESS,
85 MGMT_OP_SET_SCAN_PARAMS,
86 MGMT_OP_SET_SECURE_CONN,
87 MGMT_OP_SET_DEBUG_KEYS,
88 MGMT_OP_SET_PRIVACY,
89 MGMT_OP_LOAD_IRKS,
90 MGMT_OP_GET_CONN_INFO,
91 MGMT_OP_GET_CLOCK_INFO,
92 MGMT_OP_ADD_DEVICE,
93 MGMT_OP_REMOVE_DEVICE,
94 MGMT_OP_LOAD_CONN_PARAM,
95 MGMT_OP_READ_UNCONF_INDEX_LIST,
96 MGMT_OP_READ_CONFIG_INFO,
97 MGMT_OP_SET_EXTERNAL_CONFIG,
98 MGMT_OP_SET_PUBLIC_ADDRESS,
99 MGMT_OP_START_SERVICE_DISCOVERY,
100 MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
101 MGMT_OP_READ_EXT_INDEX_LIST,
102 MGMT_OP_READ_ADV_FEATURES,
103 MGMT_OP_ADD_ADVERTISING,
104 MGMT_OP_REMOVE_ADVERTISING,
105 };
106
107 static const u16 mgmt_events[] = {
108 MGMT_EV_CONTROLLER_ERROR,
109 MGMT_EV_INDEX_ADDED,
110 MGMT_EV_INDEX_REMOVED,
111 MGMT_EV_NEW_SETTINGS,
112 MGMT_EV_CLASS_OF_DEV_CHANGED,
113 MGMT_EV_LOCAL_NAME_CHANGED,
114 MGMT_EV_NEW_LINK_KEY,
115 MGMT_EV_NEW_LONG_TERM_KEY,
116 MGMT_EV_DEVICE_CONNECTED,
117 MGMT_EV_DEVICE_DISCONNECTED,
118 MGMT_EV_CONNECT_FAILED,
119 MGMT_EV_PIN_CODE_REQUEST,
120 MGMT_EV_USER_CONFIRM_REQUEST,
121 MGMT_EV_USER_PASSKEY_REQUEST,
122 MGMT_EV_AUTH_FAILED,
123 MGMT_EV_DEVICE_FOUND,
124 MGMT_EV_DISCOVERING,
125 MGMT_EV_DEVICE_BLOCKED,
126 MGMT_EV_DEVICE_UNBLOCKED,
127 MGMT_EV_DEVICE_UNPAIRED,
128 MGMT_EV_PASSKEY_NOTIFY,
129 MGMT_EV_NEW_IRK,
130 MGMT_EV_NEW_CSRK,
131 MGMT_EV_DEVICE_ADDED,
132 MGMT_EV_DEVICE_REMOVED,
133 MGMT_EV_NEW_CONN_PARAM,
134 MGMT_EV_UNCONF_INDEX_ADDED,
135 MGMT_EV_UNCONF_INDEX_REMOVED,
136 MGMT_EV_NEW_CONFIG_OPTIONS,
137 MGMT_EV_EXT_INDEX_ADDED,
138 MGMT_EV_EXT_INDEX_REMOVED,
139 MGMT_EV_LOCAL_OOB_DATA_UPDATED,
140 MGMT_EV_ADVERTISING_ADDED,
141 MGMT_EV_ADVERTISING_REMOVED,
142 };
143
144 static const u16 mgmt_untrusted_commands[] = {
145 MGMT_OP_READ_INDEX_LIST,
146 MGMT_OP_READ_INFO,
147 MGMT_OP_READ_UNCONF_INDEX_LIST,
148 MGMT_OP_READ_CONFIG_INFO,
149 MGMT_OP_READ_EXT_INDEX_LIST,
150 };
151
152 static const u16 mgmt_untrusted_events[] = {
153 MGMT_EV_INDEX_ADDED,
154 MGMT_EV_INDEX_REMOVED,
155 MGMT_EV_NEW_SETTINGS,
156 MGMT_EV_CLASS_OF_DEV_CHANGED,
157 MGMT_EV_LOCAL_NAME_CHANGED,
158 MGMT_EV_UNCONF_INDEX_ADDED,
159 MGMT_EV_UNCONF_INDEX_REMOVED,
160 MGMT_EV_NEW_CONFIG_OPTIONS,
161 MGMT_EV_EXT_INDEX_ADDED,
162 MGMT_EV_EXT_INDEX_REMOVED,
163 };
164
165 #define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
166
167 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
168 "\x00\x00\x00\x00\x00\x00\x00\x00"
169
170 /* HCI to MGMT error code conversion table */
171 static u8 mgmt_status_table[] = {
172 MGMT_STATUS_SUCCESS,
173 MGMT_STATUS_UNKNOWN_COMMAND, /* Unknown Command */
174 MGMT_STATUS_NOT_CONNECTED, /* No Connection */
175 MGMT_STATUS_FAILED, /* Hardware Failure */
176 MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */
177 MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */
178 MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */
179 MGMT_STATUS_NO_RESOURCES, /* Memory Full */
180 MGMT_STATUS_TIMEOUT, /* Connection Timeout */
181 MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */
182 MGMT_STATUS_NO_RESOURCES, /* Max Number of SCO Connections */
183 MGMT_STATUS_ALREADY_CONNECTED, /* ACL Connection Exists */
184 MGMT_STATUS_BUSY, /* Command Disallowed */
185 MGMT_STATUS_NO_RESOURCES, /* Rejected Limited Resources */
186 MGMT_STATUS_REJECTED, /* Rejected Security */
187 MGMT_STATUS_REJECTED, /* Rejected Personal */
188 MGMT_STATUS_TIMEOUT, /* Host Timeout */
189 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Feature */
190 MGMT_STATUS_INVALID_PARAMS, /* Invalid Parameters */
191 MGMT_STATUS_DISCONNECTED, /* OE User Ended Connection */
192 MGMT_STATUS_NO_RESOURCES, /* OE Low Resources */
193 MGMT_STATUS_DISCONNECTED, /* OE Power Off */
194 MGMT_STATUS_DISCONNECTED, /* Connection Terminated */
195 MGMT_STATUS_BUSY, /* Repeated Attempts */
196 MGMT_STATUS_REJECTED, /* Pairing Not Allowed */
197 MGMT_STATUS_FAILED, /* Unknown LMP PDU */
198 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Remote Feature */
199 MGMT_STATUS_REJECTED, /* SCO Offset Rejected */
200 MGMT_STATUS_REJECTED, /* SCO Interval Rejected */
201 MGMT_STATUS_REJECTED, /* Air Mode Rejected */
202 MGMT_STATUS_INVALID_PARAMS, /* Invalid LMP Parameters */
203 MGMT_STATUS_FAILED, /* Unspecified Error */
204 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported LMP Parameter Value */
205 MGMT_STATUS_FAILED, /* Role Change Not Allowed */
206 MGMT_STATUS_TIMEOUT, /* LMP Response Timeout */
207 MGMT_STATUS_FAILED, /* LMP Error Transaction Collision */
208 MGMT_STATUS_FAILED, /* LMP PDU Not Allowed */
209 MGMT_STATUS_REJECTED, /* Encryption Mode Not Accepted */
210 MGMT_STATUS_FAILED, /* Unit Link Key Used */
211 MGMT_STATUS_NOT_SUPPORTED, /* QoS Not Supported */
212 MGMT_STATUS_TIMEOUT, /* Instant Passed */
213 MGMT_STATUS_NOT_SUPPORTED, /* Pairing Not Supported */
214 MGMT_STATUS_FAILED, /* Transaction Collision */
215 MGMT_STATUS_INVALID_PARAMS, /* Unacceptable Parameter */
216 MGMT_STATUS_REJECTED, /* QoS Rejected */
217 MGMT_STATUS_NOT_SUPPORTED, /* Classification Not Supported */
218 MGMT_STATUS_REJECTED, /* Insufficient Security */
219 MGMT_STATUS_INVALID_PARAMS, /* Parameter Out Of Range */
220 MGMT_STATUS_BUSY, /* Role Switch Pending */
221 MGMT_STATUS_FAILED, /* Slot Violation */
222 MGMT_STATUS_FAILED, /* Role Switch Failed */
223 MGMT_STATUS_INVALID_PARAMS, /* EIR Too Large */
224 MGMT_STATUS_NOT_SUPPORTED, /* Simple Pairing Not Supported */
225 MGMT_STATUS_BUSY, /* Host Busy Pairing */
226 MGMT_STATUS_REJECTED, /* Rejected, No Suitable Channel */
227 MGMT_STATUS_BUSY, /* Controller Busy */
228 MGMT_STATUS_INVALID_PARAMS, /* Unsuitable Connection Interval */
229 MGMT_STATUS_TIMEOUT, /* Directed Advertising Timeout */
230 MGMT_STATUS_AUTH_FAILED, /* Terminated Due to MIC Failure */
231 MGMT_STATUS_CONNECT_FAILED, /* Connection Establishment Failed */
232 MGMT_STATUS_CONNECT_FAILED, /* MAC Connection Failed */
233 };
234
235 static u8 mgmt_status(u8 hci_status)
236 {
237 if (hci_status < ARRAY_SIZE(mgmt_status_table))
238 return mgmt_status_table[hci_status];
239
240 return MGMT_STATUS_FAILED;
241 }
242
243 static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data,
244 u16 len, int flag)
245 {
246 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
247 flag, NULL);
248 }
249
250 static int mgmt_limited_event(u16 event, struct hci_dev *hdev, void *data,
251 u16 len, int flag, struct sock *skip_sk)
252 {
253 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
254 flag, skip_sk);
255 }
256
257 static int mgmt_generic_event(u16 event, struct hci_dev *hdev, void *data,
258 u16 len, struct sock *skip_sk)
259 {
260 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
261 HCI_MGMT_GENERIC_EVENTS, skip_sk);
262 }
263
264 static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len,
265 struct sock *skip_sk)
266 {
267 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
268 HCI_SOCK_TRUSTED, skip_sk);
269 }
270
271 static u8 le_addr_type(u8 mgmt_addr_type)
272 {
273 if (mgmt_addr_type == BDADDR_LE_PUBLIC)
274 return ADDR_LE_DEV_PUBLIC;
275 else
276 return ADDR_LE_DEV_RANDOM;
277 }
278
279 static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
280 u16 data_len)
281 {
282 struct mgmt_rp_read_version rp;
283
284 BT_DBG("sock %p", sk);
285
286 rp.version = MGMT_VERSION;
287 rp.revision = cpu_to_le16(MGMT_REVISION);
288
289 return mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0,
290 &rp, sizeof(rp));
291 }
292
293 static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
294 u16 data_len)
295 {
296 struct mgmt_rp_read_commands *rp;
297 u16 num_commands, num_events;
298 size_t rp_size;
299 int i, err;
300
301 BT_DBG("sock %p", sk);
302
303 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
304 num_commands = ARRAY_SIZE(mgmt_commands);
305 num_events = ARRAY_SIZE(mgmt_events);
306 } else {
307 num_commands = ARRAY_SIZE(mgmt_untrusted_commands);
308 num_events = ARRAY_SIZE(mgmt_untrusted_events);
309 }
310
311 rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));
312
313 rp = kmalloc(rp_size, GFP_KERNEL);
314 if (!rp)
315 return -ENOMEM;
316
317 rp->num_commands = cpu_to_le16(num_commands);
318 rp->num_events = cpu_to_le16(num_events);
319
320 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
321 __le16 *opcode = rp->opcodes;
322
323 for (i = 0; i < num_commands; i++, opcode++)
324 put_unaligned_le16(mgmt_commands[i], opcode);
325
326 for (i = 0; i < num_events; i++, opcode++)
327 put_unaligned_le16(mgmt_events[i], opcode);
328 } else {
329 __le16 *opcode = rp->opcodes;
330
331 for (i = 0; i < num_commands; i++, opcode++)
332 put_unaligned_le16(mgmt_untrusted_commands[i], opcode);
333
334 for (i = 0; i < num_events; i++, opcode++)
335 put_unaligned_le16(mgmt_untrusted_events[i], opcode);
336 }
337
338 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0,
339 rp, rp_size);
340 kfree(rp);
341
342 return err;
343 }
344
345 static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
346 u16 data_len)
347 {
348 struct mgmt_rp_read_index_list *rp;
349 struct hci_dev *d;
350 size_t rp_len;
351 u16 count;
352 int err;
353
354 BT_DBG("sock %p", sk);
355
356 read_lock(&hci_dev_list_lock);
357
358 count = 0;
359 list_for_each_entry(d, &hci_dev_list, list) {
360 if (d->dev_type == HCI_BREDR &&
361 !hci_dev_test_flag(d, HCI_UNCONFIGURED))
362 count++;
363 }
364
365 rp_len = sizeof(*rp) + (2 * count);
366 rp = kmalloc(rp_len, GFP_ATOMIC);
367 if (!rp) {
368 read_unlock(&hci_dev_list_lock);
369 return -ENOMEM;
370 }
371
372 count = 0;
373 list_for_each_entry(d, &hci_dev_list, list) {
374 if (hci_dev_test_flag(d, HCI_SETUP) ||
375 hci_dev_test_flag(d, HCI_CONFIG) ||
376 hci_dev_test_flag(d, HCI_USER_CHANNEL))
377 continue;
378
379 /* Devices marked as raw-only are neither configured
380 * nor unconfigured controllers.
381 */
382 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
383 continue;
384
385 if (d->dev_type == HCI_BREDR &&
386 !hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
387 rp->index[count++] = cpu_to_le16(d->id);
388 BT_DBG("Added hci%u", d->id);
389 }
390 }
391
392 rp->num_controllers = cpu_to_le16(count);
393 rp_len = sizeof(*rp) + (2 * count);
394
395 read_unlock(&hci_dev_list_lock);
396
397 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST,
398 0, rp, rp_len);
399
400 kfree(rp);
401
402 return err;
403 }
404
405 static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev,
406 void *data, u16 data_len)
407 {
408 struct mgmt_rp_read_unconf_index_list *rp;
409 struct hci_dev *d;
410 size_t rp_len;
411 u16 count;
412 int err;
413
414 BT_DBG("sock %p", sk);
415
416 read_lock(&hci_dev_list_lock);
417
418 count = 0;
419 list_for_each_entry(d, &hci_dev_list, list) {
420 if (d->dev_type == HCI_BREDR &&
421 hci_dev_test_flag(d, HCI_UNCONFIGURED))
422 count++;
423 }
424
425 rp_len = sizeof(*rp) + (2 * count);
426 rp = kmalloc(rp_len, GFP_ATOMIC);
427 if (!rp) {
428 read_unlock(&hci_dev_list_lock);
429 return -ENOMEM;
430 }
431
432 count = 0;
433 list_for_each_entry(d, &hci_dev_list, list) {
434 if (hci_dev_test_flag(d, HCI_SETUP) ||
435 hci_dev_test_flag(d, HCI_CONFIG) ||
436 hci_dev_test_flag(d, HCI_USER_CHANNEL))
437 continue;
438
439 /* Devices marked as raw-only are neither configured
440 * nor unconfigured controllers.
441 */
442 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
443 continue;
444
445 if (d->dev_type == HCI_BREDR &&
446 hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
447 rp->index[count++] = cpu_to_le16(d->id);
448 BT_DBG("Added hci%u", d->id);
449 }
450 }
451
452 rp->num_controllers = cpu_to_le16(count);
453 rp_len = sizeof(*rp) + (2 * count);
454
455 read_unlock(&hci_dev_list_lock);
456
457 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
458 MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len);
459
460 kfree(rp);
461
462 return err;
463 }
464
465 static int read_ext_index_list(struct sock *sk, struct hci_dev *hdev,
466 void *data, u16 data_len)
467 {
468 struct mgmt_rp_read_ext_index_list *rp;
469 struct hci_dev *d;
470 size_t rp_len;
471 u16 count;
472 int err;
473
474 BT_DBG("sock %p", sk);
475
476 read_lock(&hci_dev_list_lock);
477
478 count = 0;
479 list_for_each_entry(d, &hci_dev_list, list) {
480 if (d->dev_type == HCI_BREDR || d->dev_type == HCI_AMP)
481 count++;
482 }
483
484 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
485 rp = kmalloc(rp_len, GFP_ATOMIC);
486 if (!rp) {
487 read_unlock(&hci_dev_list_lock);
488 return -ENOMEM;
489 }
490
491 count = 0;
492 list_for_each_entry(d, &hci_dev_list, list) {
493 if (hci_dev_test_flag(d, HCI_SETUP) ||
494 hci_dev_test_flag(d, HCI_CONFIG) ||
495 hci_dev_test_flag(d, HCI_USER_CHANNEL))
496 continue;
497
498 /* Devices marked as raw-only are neither configured
499 * nor unconfigured controllers.
500 */
501 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
502 continue;
503
504 if (d->dev_type == HCI_BREDR) {
505 if (hci_dev_test_flag(d, HCI_UNCONFIGURED))
506 rp->entry[count].type = 0x01;
507 else
508 rp->entry[count].type = 0x00;
509 } else if (d->dev_type == HCI_AMP) {
510 rp->entry[count].type = 0x02;
511 } else {
512 continue;
513 }
514
515 rp->entry[count].bus = d->bus;
516 rp->entry[count++].index = cpu_to_le16(d->id);
517 BT_DBG("Added hci%u", d->id);
518 }
519
520 rp->num_controllers = cpu_to_le16(count);
521 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
522
523 read_unlock(&hci_dev_list_lock);
524
525 /* If this command is called at least once, then all the
526 * default index and unconfigured index events are disabled
527 * and from now on only extended index events are used.
528 */
529 hci_sock_set_flag(sk, HCI_MGMT_EXT_INDEX_EVENTS);
530 hci_sock_clear_flag(sk, HCI_MGMT_INDEX_EVENTS);
531 hci_sock_clear_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS);
532
533 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
534 MGMT_OP_READ_EXT_INDEX_LIST, 0, rp, rp_len);
535
536 kfree(rp);
537
538 return err;
539 }
540
541 static bool is_configured(struct hci_dev *hdev)
542 {
543 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
544 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
545 return false;
546
547 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
548 !bacmp(&hdev->public_addr, BDADDR_ANY))
549 return false;
550
551 return true;
552 }
553
554 static __le32 get_missing_options(struct hci_dev *hdev)
555 {
556 u32 options = 0;
557
558 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
559 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
560 options |= MGMT_OPTION_EXTERNAL_CONFIG;
561
562 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
563 !bacmp(&hdev->public_addr, BDADDR_ANY))
564 options |= MGMT_OPTION_PUBLIC_ADDRESS;
565
566 return cpu_to_le32(options);
567 }
568
569 static int new_options(struct hci_dev *hdev, struct sock *skip)
570 {
571 __le32 options = get_missing_options(hdev);
572
573 return mgmt_generic_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
574 sizeof(options), skip);
575 }
576
577 static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
578 {
579 __le32 options = get_missing_options(hdev);
580
581 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &options,
582 sizeof(options));
583 }
584
585 static int read_config_info(struct sock *sk, struct hci_dev *hdev,
586 void *data, u16 data_len)
587 {
588 struct mgmt_rp_read_config_info rp;
589 u32 options = 0;
590
591 BT_DBG("sock %p %s", sk, hdev->name);
592
593 hci_dev_lock(hdev);
594
595 memset(&rp, 0, sizeof(rp));
596 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
597
598 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
599 options |= MGMT_OPTION_EXTERNAL_CONFIG;
600
601 if (hdev->set_bdaddr)
602 options |= MGMT_OPTION_PUBLIC_ADDRESS;
603
604 rp.supported_options = cpu_to_le32(options);
605 rp.missing_options = get_missing_options(hdev);
606
607 hci_dev_unlock(hdev);
608
609 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0,
610 &rp, sizeof(rp));
611 }
612
613 static u32 get_supported_settings(struct hci_dev *hdev)
614 {
615 u32 settings = 0;
616
617 settings |= MGMT_SETTING_POWERED;
618 settings |= MGMT_SETTING_BONDABLE;
619 settings |= MGMT_SETTING_DEBUG_KEYS;
620 settings |= MGMT_SETTING_CONNECTABLE;
621 settings |= MGMT_SETTING_DISCOVERABLE;
622
623 if (lmp_bredr_capable(hdev)) {
624 if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
625 settings |= MGMT_SETTING_FAST_CONNECTABLE;
626 settings |= MGMT_SETTING_BREDR;
627 settings |= MGMT_SETTING_LINK_SECURITY;
628
629 if (lmp_ssp_capable(hdev)) {
630 settings |= MGMT_SETTING_SSP;
631 settings |= MGMT_SETTING_HS;
632 }
633
634 if (lmp_sc_capable(hdev))
635 settings |= MGMT_SETTING_SECURE_CONN;
636 }
637
638 if (lmp_le_capable(hdev)) {
639 settings |= MGMT_SETTING_LE;
640 settings |= MGMT_SETTING_ADVERTISING;
641 settings |= MGMT_SETTING_SECURE_CONN;
642 settings |= MGMT_SETTING_PRIVACY;
643 settings |= MGMT_SETTING_STATIC_ADDRESS;
644 }
645
646 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
647 hdev->set_bdaddr)
648 settings |= MGMT_SETTING_CONFIGURATION;
649
650 return settings;
651 }
652
653 static u32 get_current_settings(struct hci_dev *hdev)
654 {
655 u32 settings = 0;
656
657 if (hdev_is_powered(hdev))
658 settings |= MGMT_SETTING_POWERED;
659
660 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE))
661 settings |= MGMT_SETTING_CONNECTABLE;
662
663 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
664 settings |= MGMT_SETTING_FAST_CONNECTABLE;
665
666 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
667 settings |= MGMT_SETTING_DISCOVERABLE;
668
669 if (hci_dev_test_flag(hdev, HCI_BONDABLE))
670 settings |= MGMT_SETTING_BONDABLE;
671
672 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
673 settings |= MGMT_SETTING_BREDR;
674
675 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
676 settings |= MGMT_SETTING_LE;
677
678 if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY))
679 settings |= MGMT_SETTING_LINK_SECURITY;
680
681 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
682 settings |= MGMT_SETTING_SSP;
683
684 if (hci_dev_test_flag(hdev, HCI_HS_ENABLED))
685 settings |= MGMT_SETTING_HS;
686
687 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
688 settings |= MGMT_SETTING_ADVERTISING;
689
690 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED))
691 settings |= MGMT_SETTING_SECURE_CONN;
692
693 if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS))
694 settings |= MGMT_SETTING_DEBUG_KEYS;
695
696 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
697 settings |= MGMT_SETTING_PRIVACY;
698
699 /* The current setting for static address has two purposes. The
700 * first is to indicate if the static address will be used and
701 * the second is to indicate if it is actually set.
702 *
703 * This means if the static address is not configured, this flag
704 * will never be set. If the address is configured, then if the
705 * address is actually used decides if the flag is set or not.
706 *
707 * For single mode LE only controllers and dual-mode controllers
708 * with BR/EDR disabled, the existence of the static address will
709 * be evaluated.
710 */
711 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
712 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
713 !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
714 if (bacmp(&hdev->static_addr, BDADDR_ANY))
715 settings |= MGMT_SETTING_STATIC_ADDRESS;
716 }
717
718 return settings;
719 }
720
721 #define PNP_INFO_SVCLASS_ID 0x1200
722
723 static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
724 {
725 u8 *ptr = data, *uuids_start = NULL;
726 struct bt_uuid *uuid;
727
728 if (len < 4)
729 return ptr;
730
731 list_for_each_entry(uuid, &hdev->uuids, list) {
732 u16 uuid16;
733
734 if (uuid->size != 16)
735 continue;
736
737 uuid16 = get_unaligned_le16(&uuid->uuid[12]);
738 if (uuid16 < 0x1100)
739 continue;
740
741 if (uuid16 == PNP_INFO_SVCLASS_ID)
742 continue;
743
744 if (!uuids_start) {
745 uuids_start = ptr;
746 uuids_start[0] = 1;
747 uuids_start[1] = EIR_UUID16_ALL;
748 ptr += 2;
749 }
750
751 /* Stop if not enough space to put next UUID */
752 if ((ptr - data) + sizeof(u16) > len) {
753 uuids_start[1] = EIR_UUID16_SOME;
754 break;
755 }
756
757 *ptr++ = (uuid16 & 0x00ff);
758 *ptr++ = (uuid16 & 0xff00) >> 8;
759 uuids_start[0] += sizeof(uuid16);
760 }
761
762 return ptr;
763 }
764
765 static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
766 {
767 u8 *ptr = data, *uuids_start = NULL;
768 struct bt_uuid *uuid;
769
770 if (len < 6)
771 return ptr;
772
773 list_for_each_entry(uuid, &hdev->uuids, list) {
774 if (uuid->size != 32)
775 continue;
776
777 if (!uuids_start) {
778 uuids_start = ptr;
779 uuids_start[0] = 1;
780 uuids_start[1] = EIR_UUID32_ALL;
781 ptr += 2;
782 }
783
784 /* Stop if not enough space to put next UUID */
785 if ((ptr - data) + sizeof(u32) > len) {
786 uuids_start[1] = EIR_UUID32_SOME;
787 break;
788 }
789
790 memcpy(ptr, &uuid->uuid[12], sizeof(u32));
791 ptr += sizeof(u32);
792 uuids_start[0] += sizeof(u32);
793 }
794
795 return ptr;
796 }
797
798 static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
799 {
800 u8 *ptr = data, *uuids_start = NULL;
801 struct bt_uuid *uuid;
802
803 if (len < 18)
804 return ptr;
805
806 list_for_each_entry(uuid, &hdev->uuids, list) {
807 if (uuid->size != 128)
808 continue;
809
810 if (!uuids_start) {
811 uuids_start = ptr;
812 uuids_start[0] = 1;
813 uuids_start[1] = EIR_UUID128_ALL;
814 ptr += 2;
815 }
816
817 /* Stop if not enough space to put next UUID */
818 if ((ptr - data) + 16 > len) {
819 uuids_start[1] = EIR_UUID128_SOME;
820 break;
821 }
822
823 memcpy(ptr, uuid->uuid, 16);
824 ptr += 16;
825 uuids_start[0] += 16;
826 }
827
828 return ptr;
829 }
830
831 static struct mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev)
832 {
833 return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev);
834 }
835
836 static struct mgmt_pending_cmd *pending_find_data(u16 opcode,
837 struct hci_dev *hdev,
838 const void *data)
839 {
840 return mgmt_pending_find_data(HCI_CHANNEL_CONTROL, opcode, hdev, data);
841 }
842
843 static u8 get_current_adv_instance(struct hci_dev *hdev)
844 {
845 /* The "Set Advertising" setting supersedes the "Add Advertising"
846 * setting. Here we set the advertising data based on which
847 * setting was set. When neither apply, default to the global settings,
848 * represented by instance "0".
849 */
850 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
851 !hci_dev_test_flag(hdev, HCI_ADVERTISING))
852 return hdev->cur_adv_instance;
853
854 return 0x00;
855 }
856
857 static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
858 {
859 u8 ad_len = 0;
860 size_t name_len;
861
862 name_len = strlen(hdev->dev_name);
863 if (name_len > 0) {
864 size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2;
865
866 if (name_len > max_len) {
867 name_len = max_len;
868 ptr[1] = EIR_NAME_SHORT;
869 } else
870 ptr[1] = EIR_NAME_COMPLETE;
871
872 ptr[0] = name_len + 1;
873
874 memcpy(ptr + 2, hdev->dev_name, name_len);
875
876 ad_len += (name_len + 2);
877 ptr += (name_len + 2);
878 }
879
880 return ad_len;
881 }
882
883 static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
884 u8 *ptr)
885 {
886 struct adv_info *adv_instance;
887
888 adv_instance = hci_find_adv_instance(hdev, instance);
889 if (!adv_instance)
890 return 0;
891
892 /* TODO: Set the appropriate entries based on advertising instance flags
893 * here once flags other than 0 are supported.
894 */
895 memcpy(ptr, adv_instance->scan_rsp_data,
896 adv_instance->scan_rsp_len);
897
898 return adv_instance->scan_rsp_len;
899 }
900
901 static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
902 {
903 struct hci_dev *hdev = req->hdev;
904 struct hci_cp_le_set_scan_rsp_data cp;
905 u8 len;
906
907 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
908 return;
909
910 memset(&cp, 0, sizeof(cp));
911
912 if (instance)
913 len = create_instance_scan_rsp_data(hdev, instance, cp.data);
914 else
915 len = create_default_scan_rsp_data(hdev, cp.data);
916
917 if (hdev->scan_rsp_data_len == len &&
918 !memcmp(cp.data, hdev->scan_rsp_data, len))
919 return;
920
921 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
922 hdev->scan_rsp_data_len = len;
923
924 cp.length = len;
925
926 hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
927 }
928
929 static void update_scan_rsp_data(struct hci_request *req)
930 {
931 update_inst_scan_rsp_data(req, get_current_adv_instance(req->hdev));
932 }
933
934 static u8 get_adv_discov_flags(struct hci_dev *hdev)
935 {
936 struct mgmt_pending_cmd *cmd;
937
938 /* If there's a pending mgmt command the flags will not yet have
939 * their final values, so check for this first.
940 */
941 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
942 if (cmd) {
943 struct mgmt_mode *cp = cmd->param;
944 if (cp->val == 0x01)
945 return LE_AD_GENERAL;
946 else if (cp->val == 0x02)
947 return LE_AD_LIMITED;
948 } else {
949 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
950 return LE_AD_LIMITED;
951 else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
952 return LE_AD_GENERAL;
953 }
954
955 return 0;
956 }
957
958 static bool get_connectable(struct hci_dev *hdev)
959 {
960 struct mgmt_pending_cmd *cmd;
961
962 /* If there's a pending mgmt command the flag will not yet have
963 * it's final value, so check for this first.
964 */
965 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
966 if (cmd) {
967 struct mgmt_mode *cp = cmd->param;
968
969 return cp->val;
970 }
971
972 return hci_dev_test_flag(hdev, HCI_CONNECTABLE);
973 }
974
975 static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance)
976 {
977 u32 flags;
978 struct adv_info *adv_instance;
979
980 if (instance == 0x00) {
981 /* Instance 0 always manages the "Tx Power" and "Flags"
982 * fields
983 */
984 flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
985
986 /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
987 * corresponds to the "connectable" instance flag.
988 */
989 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
990 flags |= MGMT_ADV_FLAG_CONNECTABLE;
991
992 return flags;
993 }
994
995 adv_instance = hci_find_adv_instance(hdev, instance);
996
997 /* Return 0 when we got an invalid instance identifier. */
998 if (!adv_instance)
999 return 0;
1000
1001 return adv_instance->flags;
1002 }
1003
1004 static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
1005 {
1006 u8 instance = get_current_adv_instance(hdev);
1007 struct adv_info *adv_instance;
1008
1009 /* Ignore instance 0 */
1010 if (instance == 0x00)
1011 return 0;
1012
1013 adv_instance = hci_find_adv_instance(hdev, instance);
1014 if (!adv_instance)
1015 return 0;
1016
1017 /* TODO: Take into account the "appearance" and "local-name" flags here.
1018 * These are currently being ignored as they are not supported.
1019 */
1020 return adv_instance->scan_rsp_len;
1021 }
1022
1023 static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
1024 {
1025 struct adv_info *adv_instance = NULL;
1026 u8 ad_len = 0, flags = 0;
1027 u32 instance_flags;
1028
1029 /* Return 0 when the current instance identifier is invalid. */
1030 if (instance) {
1031 adv_instance = hci_find_adv_instance(hdev, instance);
1032 if (!adv_instance)
1033 return 0;
1034 }
1035
1036 instance_flags = get_adv_instance_flags(hdev, instance);
1037
1038 /* The Add Advertising command allows userspace to set both the general
1039 * and limited discoverable flags.
1040 */
1041 if (instance_flags & MGMT_ADV_FLAG_DISCOV)
1042 flags |= LE_AD_GENERAL;
1043
1044 if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
1045 flags |= LE_AD_LIMITED;
1046
1047 if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
1048 /* If a discovery flag wasn't provided, simply use the global
1049 * settings.
1050 */
1051 if (!flags)
1052 flags |= get_adv_discov_flags(hdev);
1053
1054 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1055 flags |= LE_AD_NO_BREDR;
1056
1057 /* If flags would still be empty, then there is no need to
1058 * include the "Flags" AD field".
1059 */
1060 if (flags) {
1061 ptr[0] = 0x02;
1062 ptr[1] = EIR_FLAGS;
1063 ptr[2] = flags;
1064
1065 ad_len += 3;
1066 ptr += 3;
1067 }
1068 }
1069
1070 if (adv_instance) {
1071 memcpy(ptr, adv_instance->adv_data,
1072 adv_instance->adv_data_len);
1073 ad_len += adv_instance->adv_data_len;
1074 ptr += adv_instance->adv_data_len;
1075 }
1076
1077 /* Provide Tx Power only if we can provide a valid value for it */
1078 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID &&
1079 (instance_flags & MGMT_ADV_FLAG_TX_POWER)) {
1080 ptr[0] = 0x02;
1081 ptr[1] = EIR_TX_POWER;
1082 ptr[2] = (u8)hdev->adv_tx_power;
1083
1084 ad_len += 3;
1085 ptr += 3;
1086 }
1087
1088 return ad_len;
1089 }
1090
1091 static void update_inst_adv_data(struct hci_request *req, u8 instance)
1092 {
1093 struct hci_dev *hdev = req->hdev;
1094 struct hci_cp_le_set_adv_data cp;
1095 u8 len;
1096
1097 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1098 return;
1099
1100 memset(&cp, 0, sizeof(cp));
1101
1102 len = create_instance_adv_data(hdev, instance, cp.data);
1103
1104 /* There's nothing to do if the data hasn't changed */
1105 if (hdev->adv_data_len == len &&
1106 memcmp(cp.data, hdev->adv_data, len) == 0)
1107 return;
1108
1109 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1110 hdev->adv_data_len = len;
1111
1112 cp.length = len;
1113
1114 hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
1115 }
1116
1117 static void update_adv_data(struct hci_request *req)
1118 {
1119 update_inst_adv_data(req, get_current_adv_instance(req->hdev));
1120 }
1121
1122 int mgmt_update_adv_data(struct hci_dev *hdev)
1123 {
1124 struct hci_request req;
1125
1126 hci_req_init(&req, hdev);
1127 update_adv_data(&req);
1128
1129 return hci_req_run(&req, NULL);
1130 }
1131
1132 static void create_eir(struct hci_dev *hdev, u8 *data)
1133 {
1134 u8 *ptr = data;
1135 size_t name_len;
1136
1137 name_len = strlen(hdev->dev_name);
1138
1139 if (name_len > 0) {
1140 /* EIR Data type */
1141 if (name_len > 48) {
1142 name_len = 48;
1143 ptr[1] = EIR_NAME_SHORT;
1144 } else
1145 ptr[1] = EIR_NAME_COMPLETE;
1146
1147 /* EIR Data length */
1148 ptr[0] = name_len + 1;
1149
1150 memcpy(ptr + 2, hdev->dev_name, name_len);
1151
1152 ptr += (name_len + 2);
1153 }
1154
1155 if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
1156 ptr[0] = 2;
1157 ptr[1] = EIR_TX_POWER;
1158 ptr[2] = (u8) hdev->inq_tx_power;
1159
1160 ptr += 3;
1161 }
1162
1163 if (hdev->devid_source > 0) {
1164 ptr[0] = 9;
1165 ptr[1] = EIR_DEVICE_ID;
1166
1167 put_unaligned_le16(hdev->devid_source, ptr + 2);
1168 put_unaligned_le16(hdev->devid_vendor, ptr + 4);
1169 put_unaligned_le16(hdev->devid_product, ptr + 6);
1170 put_unaligned_le16(hdev->devid_version, ptr + 8);
1171
1172 ptr += 10;
1173 }
1174
1175 ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1176 ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1177 ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1178 }
1179
1180 static void update_eir(struct hci_request *req)
1181 {
1182 struct hci_dev *hdev = req->hdev;
1183 struct hci_cp_write_eir cp;
1184
1185 if (!hdev_is_powered(hdev))
1186 return;
1187
1188 if (!lmp_ext_inq_capable(hdev))
1189 return;
1190
1191 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
1192 return;
1193
1194 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1195 return;
1196
1197 memset(&cp, 0, sizeof(cp));
1198
1199 create_eir(hdev, cp.data);
1200
1201 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
1202 return;
1203
1204 memcpy(hdev->eir, cp.data, sizeof(cp.data));
1205
1206 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
1207 }
1208
1209 static u8 get_service_classes(struct hci_dev *hdev)
1210 {
1211 struct bt_uuid *uuid;
1212 u8 val = 0;
1213
1214 list_for_each_entry(uuid, &hdev->uuids, list)
1215 val |= uuid->svc_hint;
1216
1217 return val;
1218 }
1219
1220 static void update_class(struct hci_request *req)
1221 {
1222 struct hci_dev *hdev = req->hdev;
1223 u8 cod[3];
1224
1225 BT_DBG("%s", hdev->name);
1226
1227 if (!hdev_is_powered(hdev))
1228 return;
1229
1230 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1231 return;
1232
1233 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1234 return;
1235
1236 cod[0] = hdev->minor_class;
1237 cod[1] = hdev->major_class;
1238 cod[2] = get_service_classes(hdev);
1239
1240 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
1241 cod[1] |= 0x20;
1242
1243 if (memcmp(cod, hdev->dev_class, 3) == 0)
1244 return;
1245
1246 hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
1247 }
1248
1249 static void disable_advertising(struct hci_request *req)
1250 {
1251 u8 enable = 0x00;
1252
1253 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1254 }
1255
1256 static void enable_advertising(struct hci_request *req)
1257 {
1258 struct hci_dev *hdev = req->hdev;
1259 struct hci_cp_le_set_adv_param cp;
1260 u8 own_addr_type, enable = 0x01;
1261 bool connectable;
1262 u8 instance;
1263 u32 flags;
1264
1265 if (hci_conn_num(hdev, LE_LINK) > 0)
1266 return;
1267
1268 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1269 disable_advertising(req);
1270
1271 /* Clear the HCI_LE_ADV bit temporarily so that the
1272 * hci_update_random_address knows that it's safe to go ahead
1273 * and write a new random address. The flag will be set back on
1274 * as soon as the SET_ADV_ENABLE HCI command completes.
1275 */
1276 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1277
1278 instance = get_current_adv_instance(hdev);
1279 flags = get_adv_instance_flags(hdev, instance);
1280
1281 /* If the "connectable" instance flag was not set, then choose between
1282 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1283 */
1284 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1285 get_connectable(hdev);
1286
1287 /* Set require_privacy to true only when non-connectable
1288 * advertising is used. In that case it is fine to use a
1289 * non-resolvable private address.
1290 */
1291 if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
1292 return;
1293
1294 memset(&cp, 0, sizeof(cp));
1295 cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval);
1296 cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval);
1297
1298 if (connectable)
1299 cp.type = LE_ADV_IND;
1300 else if (get_cur_adv_instance_scan_rsp_len(hdev))
1301 cp.type = LE_ADV_SCAN_IND;
1302 else
1303 cp.type = LE_ADV_NONCONN_IND;
1304
1305 cp.own_address_type = own_addr_type;
1306 cp.channel_map = hdev->le_adv_channel_map;
1307
1308 hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
1309
1310 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1311 }
1312
1313 static void service_cache_off(struct work_struct *work)
1314 {
1315 struct hci_dev *hdev = container_of(work, struct hci_dev,
1316 service_cache.work);
1317 struct hci_request req;
1318
1319 if (!hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
1320 return;
1321
1322 hci_req_init(&req, hdev);
1323
1324 hci_dev_lock(hdev);
1325
1326 update_eir(&req);
1327 update_class(&req);
1328
1329 hci_dev_unlock(hdev);
1330
1331 hci_req_run(&req, NULL);
1332 }
1333
1334 static void rpa_expired(struct work_struct *work)
1335 {
1336 struct hci_dev *hdev = container_of(work, struct hci_dev,
1337 rpa_expired.work);
1338 struct hci_request req;
1339
1340 BT_DBG("");
1341
1342 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
1343
1344 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING))
1345 return;
1346
1347 /* The generation of a new RPA and programming it into the
1348 * controller happens in the enable_advertising() function.
1349 */
1350 hci_req_init(&req, hdev);
1351 enable_advertising(&req);
1352 hci_req_run(&req, NULL);
1353 }
1354
1355 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
1356 {
1357 if (hci_dev_test_and_set_flag(hdev, HCI_MGMT))
1358 return;
1359
1360 INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
1361 INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
1362
1363 /* Non-mgmt controlled devices get this bit set
1364 * implicitly so that pairing works for them, however
1365 * for mgmt we require user-space to explicitly enable
1366 * it
1367 */
1368 hci_dev_clear_flag(hdev, HCI_BONDABLE);
1369 }
1370
1371 static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
1372 void *data, u16 data_len)
1373 {
1374 struct mgmt_rp_read_info rp;
1375
1376 BT_DBG("sock %p %s", sk, hdev->name);
1377
1378 hci_dev_lock(hdev);
1379
1380 memset(&rp, 0, sizeof(rp));
1381
1382 bacpy(&rp.bdaddr, &hdev->bdaddr);
1383
1384 rp.version = hdev->hci_ver;
1385 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
1386
1387 rp.supported_settings = cpu_to_le32(get_supported_settings(hdev));
1388 rp.current_settings = cpu_to_le32(get_current_settings(hdev));
1389
1390 memcpy(rp.dev_class, hdev->dev_class, 3);
1391
1392 memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name));
1393 memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name));
1394
1395 hci_dev_unlock(hdev);
1396
1397 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp,
1398 sizeof(rp));
1399 }
1400
1401 static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
1402 {
1403 __le32 settings = cpu_to_le32(get_current_settings(hdev));
1404
1405 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &settings,
1406 sizeof(settings));
1407 }
1408
1409 static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode)
1410 {
1411 BT_DBG("%s status 0x%02x", hdev->name, status);
1412
1413 if (hci_conn_count(hdev) == 0) {
1414 cancel_delayed_work(&hdev->power_off);
1415 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1416 }
1417 }
1418
1419 static bool hci_stop_discovery(struct hci_request *req)
1420 {
1421 struct hci_dev *hdev = req->hdev;
1422 struct hci_cp_remote_name_req_cancel cp;
1423 struct inquiry_entry *e;
1424
1425 switch (hdev->discovery.state) {
1426 case DISCOVERY_FINDING:
1427 if (test_bit(HCI_INQUIRY, &hdev->flags))
1428 hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
1429
1430 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1431 cancel_delayed_work(&hdev->le_scan_disable);
1432 hci_req_add_le_scan_disable(req);
1433 }
1434
1435 return true;
1436
1437 case DISCOVERY_RESOLVING:
1438 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
1439 NAME_PENDING);
1440 if (!e)
1441 break;
1442
1443 bacpy(&cp.bdaddr, &e->data.bdaddr);
1444 hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
1445 &cp);
1446
1447 return true;
1448
1449 default:
1450 /* Passive scanning */
1451 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1452 hci_req_add_le_scan_disable(req);
1453 return true;
1454 }
1455
1456 break;
1457 }
1458
1459 return false;
1460 }
1461
1462 static void advertising_added(struct sock *sk, struct hci_dev *hdev,
1463 u8 instance)
1464 {
1465 struct mgmt_ev_advertising_added ev;
1466
1467 ev.instance = instance;
1468
1469 mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk);
1470 }
1471
1472 static void advertising_removed(struct sock *sk, struct hci_dev *hdev,
1473 u8 instance)
1474 {
1475 struct mgmt_ev_advertising_removed ev;
1476
1477 ev.instance = instance;
1478
1479 mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk);
1480 }
1481
1482 static int schedule_adv_instance(struct hci_request *req, u8 instance,
1483 bool force) {
1484 struct hci_dev *hdev = req->hdev;
1485 struct adv_info *adv_instance = NULL;
1486 u16 timeout;
1487
1488 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
1489 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
1490 return -EPERM;
1491
1492 if (hdev->adv_instance_timeout)
1493 return -EBUSY;
1494
1495 adv_instance = hci_find_adv_instance(hdev, instance);
1496 if (!adv_instance)
1497 return -ENOENT;
1498
1499 /* A zero timeout means unlimited advertising. As long as there is
1500 * only one instance, duration should be ignored. We still set a timeout
1501 * in case further instances are being added later on.
1502 *
1503 * If the remaining lifetime of the instance is more than the duration
1504 * then the timeout corresponds to the duration, otherwise it will be
1505 * reduced to the remaining instance lifetime.
1506 */
1507 if (adv_instance->timeout == 0 ||
1508 adv_instance->duration <= adv_instance->remaining_time)
1509 timeout = adv_instance->duration;
1510 else
1511 timeout = adv_instance->remaining_time;
1512
1513 /* The remaining time is being reduced unless the instance is being
1514 * advertised without time limit.
1515 */
1516 if (adv_instance->timeout)
1517 adv_instance->remaining_time =
1518 adv_instance->remaining_time - timeout;
1519
1520 hdev->adv_instance_timeout = timeout;
1521 queue_delayed_work(hdev->workqueue,
1522 &hdev->adv_instance_expire,
1523 msecs_to_jiffies(timeout * 1000));
1524
1525 /* If we're just re-scheduling the same instance again then do not
1526 * execute any HCI commands. This happens when a single instance is
1527 * being advertised.
1528 */
1529 if (!force && hdev->cur_adv_instance == instance &&
1530 hci_dev_test_flag(hdev, HCI_LE_ADV))
1531 return 0;
1532
1533 hdev->cur_adv_instance = instance;
1534 update_adv_data(req);
1535 update_scan_rsp_data(req);
1536 enable_advertising(req);
1537
1538 return 0;
1539 }
1540
1541 static void cancel_adv_timeout(struct hci_dev *hdev)
1542 {
1543 if (hdev->adv_instance_timeout) {
1544 hdev->adv_instance_timeout = 0;
1545 cancel_delayed_work(&hdev->adv_instance_expire);
1546 }
1547 }
1548
1549 /* For a single instance:
1550 * - force == true: The instance will be removed even when its remaining
1551 * lifetime is not zero.
1552 * - force == false: the instance will be deactivated but kept stored unless
1553 * the remaining lifetime is zero.
1554 *
1555 * For instance == 0x00:
1556 * - force == true: All instances will be removed regardless of their timeout
1557 * setting.
1558 * - force == false: Only instances that have a timeout will be removed.
1559 */
1560 static void clear_adv_instance(struct hci_dev *hdev, struct hci_request *req,
1561 u8 instance, bool force)
1562 {
1563 struct adv_info *adv_instance, *n, *next_instance = NULL;
1564 int err;
1565 u8 rem_inst;
1566
1567 /* Cancel any timeout concerning the removed instance(s). */
1568 if (!instance || hdev->cur_adv_instance == instance)
1569 cancel_adv_timeout(hdev);
1570
1571 /* Get the next instance to advertise BEFORE we remove
1572 * the current one. This can be the same instance again
1573 * if there is only one instance.
1574 */
1575 if (instance && hdev->cur_adv_instance == instance)
1576 next_instance = hci_get_next_instance(hdev, instance);
1577
1578 if (instance == 0x00) {
1579 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
1580 list) {
1581 if (!(force || adv_instance->timeout))
1582 continue;
1583
1584 rem_inst = adv_instance->instance;
1585 err = hci_remove_adv_instance(hdev, rem_inst);
1586 if (!err)
1587 advertising_removed(NULL, hdev, rem_inst);
1588 }
1589 hdev->cur_adv_instance = 0x00;
1590 } else {
1591 adv_instance = hci_find_adv_instance(hdev, instance);
1592
1593 if (force || (adv_instance && adv_instance->timeout &&
1594 !adv_instance->remaining_time)) {
1595 /* Don't advertise a removed instance. */
1596 if (next_instance &&
1597 next_instance->instance == instance)
1598 next_instance = NULL;
1599
1600 err = hci_remove_adv_instance(hdev, instance);
1601 if (!err)
1602 advertising_removed(NULL, hdev, instance);
1603 }
1604 }
1605
1606 if (list_empty(&hdev->adv_instances)) {
1607 hdev->cur_adv_instance = 0x00;
1608 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
1609 }
1610
1611 if (!req || !hdev_is_powered(hdev) ||
1612 hci_dev_test_flag(hdev, HCI_ADVERTISING))
1613 return;
1614
1615 if (next_instance)
1616 schedule_adv_instance(req, next_instance->instance, false);
1617 }
1618
1619 static int clean_up_hci_state(struct hci_dev *hdev)
1620 {
1621 struct hci_request req;
1622 struct hci_conn *conn;
1623 bool discov_stopped;
1624 int err;
1625
1626 hci_req_init(&req, hdev);
1627
1628 if (test_bit(HCI_ISCAN, &hdev->flags) ||
1629 test_bit(HCI_PSCAN, &hdev->flags)) {
1630 u8 scan = 0x00;
1631 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
1632 }
1633
1634 clear_adv_instance(hdev, NULL, 0x00, false);
1635
1636 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1637 disable_advertising(&req);
1638
1639 discov_stopped = hci_stop_discovery(&req);
1640
1641 list_for_each_entry(conn, &hdev->conn_hash.list, list) {
1642 /* 0x15 == Terminated due to Power Off */
1643 __hci_abort_conn(&req, conn, 0x15);
1644 }
1645
1646 err = hci_req_run(&req, clean_up_hci_complete);
1647 if (!err && discov_stopped)
1648 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
1649
1650 return err;
1651 }
1652
1653 static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
1654 u16 len)
1655 {
1656 struct mgmt_mode *cp = data;
1657 struct mgmt_pending_cmd *cmd;
1658 int err;
1659
1660 BT_DBG("request for %s", hdev->name);
1661
1662 if (cp->val != 0x00 && cp->val != 0x01)
1663 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1664 MGMT_STATUS_INVALID_PARAMS);
1665
1666 hci_dev_lock(hdev);
1667
1668 if (pending_find(MGMT_OP_SET_POWERED, hdev)) {
1669 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1670 MGMT_STATUS_BUSY);
1671 goto failed;
1672 }
1673
1674 if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
1675 cancel_delayed_work(&hdev->power_off);
1676
1677 if (cp->val) {
1678 mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev,
1679 data, len);
1680 err = mgmt_powered(hdev, 1);
1681 goto failed;
1682 }
1683 }
1684
1685 if (!!cp->val == hdev_is_powered(hdev)) {
1686 err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev);
1687 goto failed;
1688 }
1689
1690 cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len);
1691 if (!cmd) {
1692 err = -ENOMEM;
1693 goto failed;
1694 }
1695
1696 if (cp->val) {
1697 queue_work(hdev->req_workqueue, &hdev->power_on);
1698 err = 0;
1699 } else {
1700 /* Disconnect connections, stop scans, etc */
1701 err = clean_up_hci_state(hdev);
1702 if (!err)
1703 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
1704 HCI_POWER_OFF_TIMEOUT);
1705
1706 /* ENODATA means there were no HCI commands queued */
1707 if (err == -ENODATA) {
1708 cancel_delayed_work(&hdev->power_off);
1709 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1710 err = 0;
1711 }
1712 }
1713
1714 failed:
1715 hci_dev_unlock(hdev);
1716 return err;
1717 }
1718
1719 static int new_settings(struct hci_dev *hdev, struct sock *skip)
1720 {
1721 __le32 ev = cpu_to_le32(get_current_settings(hdev));
1722
1723 return mgmt_generic_event(MGMT_EV_NEW_SETTINGS, hdev, &ev,
1724 sizeof(ev), skip);
1725 }
1726
1727 int mgmt_new_settings(struct hci_dev *hdev)
1728 {
1729 return new_settings(hdev, NULL);
1730 }
1731
1732 struct cmd_lookup {
1733 struct sock *sk;
1734 struct hci_dev *hdev;
1735 u8 mgmt_status;
1736 };
1737
1738 static void settings_rsp(struct mgmt_pending_cmd *cmd, void *data)
1739 {
1740 struct cmd_lookup *match = data;
1741
1742 send_settings_rsp(cmd->sk, cmd->opcode, match->hdev);
1743
1744 list_del(&cmd->list);
1745
1746 if (match->sk == NULL) {
1747 match->sk = cmd->sk;
1748 sock_hold(match->sk);
1749 }
1750
1751 mgmt_pending_free(cmd);
1752 }
1753
1754 static void cmd_status_rsp(struct mgmt_pending_cmd *cmd, void *data)
1755 {
1756 u8 *status = data;
1757
1758 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, *status);
1759 mgmt_pending_remove(cmd);
1760 }
1761
1762 static void cmd_complete_rsp(struct mgmt_pending_cmd *cmd, void *data)
1763 {
1764 if (cmd->cmd_complete) {
1765 u8 *status = data;
1766
1767 cmd->cmd_complete(cmd, *status);
1768 mgmt_pending_remove(cmd);
1769
1770 return;
1771 }
1772
1773 cmd_status_rsp(cmd, data);
1774 }
1775
1776 static int generic_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1777 {
1778 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1779 cmd->param, cmd->param_len);
1780 }
1781
1782 static int addr_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1783 {
1784 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1785 cmd->param, sizeof(struct mgmt_addr_info));
1786 }
1787
1788 static u8 mgmt_bredr_support(struct hci_dev *hdev)
1789 {
1790 if (!lmp_bredr_capable(hdev))
1791 return MGMT_STATUS_NOT_SUPPORTED;
1792 else if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1793 return MGMT_STATUS_REJECTED;
1794 else
1795 return MGMT_STATUS_SUCCESS;
1796 }
1797
1798 static u8 mgmt_le_support(struct hci_dev *hdev)
1799 {
1800 if (!lmp_le_capable(hdev))
1801 return MGMT_STATUS_NOT_SUPPORTED;
1802 else if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1803 return MGMT_STATUS_REJECTED;
1804 else
1805 return MGMT_STATUS_SUCCESS;
1806 }
1807
1808 static void set_discoverable_complete(struct hci_dev *hdev, u8 status,
1809 u16 opcode)
1810 {
1811 struct mgmt_pending_cmd *cmd;
1812 struct mgmt_mode *cp;
1813 struct hci_request req;
1814 bool changed;
1815
1816 BT_DBG("status 0x%02x", status);
1817
1818 hci_dev_lock(hdev);
1819
1820 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
1821 if (!cmd)
1822 goto unlock;
1823
1824 if (status) {
1825 u8 mgmt_err = mgmt_status(status);
1826 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
1827 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1828 goto remove_cmd;
1829 }
1830
1831 cp = cmd->param;
1832 if (cp->val) {
1833 changed = !hci_dev_test_and_set_flag(hdev, HCI_DISCOVERABLE);
1834
1835 if (hdev->discov_timeout > 0) {
1836 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1837 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1838 to);
1839 }
1840 } else {
1841 changed = hci_dev_test_and_clear_flag(hdev, HCI_DISCOVERABLE);
1842 }
1843
1844 send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1845
1846 if (changed)
1847 new_settings(hdev, cmd->sk);
1848
1849 /* When the discoverable mode gets changed, make sure
1850 * that class of device has the limited discoverable
1851 * bit correctly set. Also update page scan based on whitelist
1852 * entries.
1853 */
1854 hci_req_init(&req, hdev);
1855 __hci_update_page_scan(&req);
1856 update_class(&req);
1857 hci_req_run(&req, NULL);
1858
1859 remove_cmd:
1860 mgmt_pending_remove(cmd);
1861
1862 unlock:
1863 hci_dev_unlock(hdev);
1864 }
1865
1866 static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data,
1867 u16 len)
1868 {
1869 struct mgmt_cp_set_discoverable *cp = data;
1870 struct mgmt_pending_cmd *cmd;
1871 struct hci_request req;
1872 u16 timeout;
1873 u8 scan;
1874 int err;
1875
1876 BT_DBG("request for %s", hdev->name);
1877
1878 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
1879 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1880 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1881 MGMT_STATUS_REJECTED);
1882
1883 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
1884 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1885 MGMT_STATUS_INVALID_PARAMS);
1886
1887 timeout = __le16_to_cpu(cp->timeout);
1888
1889 /* Disabling discoverable requires that no timeout is set,
1890 * and enabling limited discoverable requires a timeout.
1891 */
1892 if ((cp->val == 0x00 && timeout > 0) ||
1893 (cp->val == 0x02 && timeout == 0))
1894 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1895 MGMT_STATUS_INVALID_PARAMS);
1896
1897 hci_dev_lock(hdev);
1898
1899 if (!hdev_is_powered(hdev) && timeout > 0) {
1900 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1901 MGMT_STATUS_NOT_POWERED);
1902 goto failed;
1903 }
1904
1905 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
1906 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
1907 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1908 MGMT_STATUS_BUSY);
1909 goto failed;
1910 }
1911
1912 if (!hci_dev_test_flag(hdev, HCI_CONNECTABLE)) {
1913 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1914 MGMT_STATUS_REJECTED);
1915 goto failed;
1916 }
1917
1918 if (!hdev_is_powered(hdev)) {
1919 bool changed = false;
1920
1921 /* Setting limited discoverable when powered off is
1922 * not a valid operation since it requires a timeout
1923 * and so no need to check HCI_LIMITED_DISCOVERABLE.
1924 */
1925 if (!!cp->val != hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) {
1926 hci_dev_change_flag(hdev, HCI_DISCOVERABLE);
1927 changed = true;
1928 }
1929
1930 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1931 if (err < 0)
1932 goto failed;
1933
1934 if (changed)
1935 err = new_settings(hdev, sk);
1936
1937 goto failed;
1938 }
1939
1940 /* If the current mode is the same, then just update the timeout
1941 * value with the new value. And if only the timeout gets updated,
1942 * then no need for any HCI transactions.
1943 */
1944 if (!!cp->val == hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
1945 (cp->val == 0x02) == hci_dev_test_flag(hdev,
1946 HCI_LIMITED_DISCOVERABLE)) {
1947 cancel_delayed_work(&hdev->discov_off);
1948 hdev->discov_timeout = timeout;
1949
1950 if (cp->val && hdev->discov_timeout > 0) {
1951 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1952 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1953 to);
1954 }
1955
1956 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1957 goto failed;
1958 }
1959
1960 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len);
1961 if (!cmd) {
1962 err = -ENOMEM;
1963 goto failed;
1964 }
1965
1966 /* Cancel any potential discoverable timeout that might be
1967 * still active and store new timeout value. The arming of
1968 * the timeout happens in the complete handler.
1969 */
1970 cancel_delayed_work(&hdev->discov_off);
1971 hdev->discov_timeout = timeout;
1972
1973 /* Limited discoverable mode */
1974 if (cp->val == 0x02)
1975 hci_dev_set_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1976 else
1977 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1978
1979 hci_req_init(&req, hdev);
1980
1981 /* The procedure for LE-only controllers is much simpler - just
1982 * update the advertising data.
1983 */
1984 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1985 goto update_ad;
1986
1987 scan = SCAN_PAGE;
1988
1989 if (cp->val) {
1990 struct hci_cp_write_current_iac_lap hci_cp;
1991
1992 if (cp->val == 0x02) {
1993 /* Limited discoverable mode */
1994 hci_cp.num_iac = min_t(u8, hdev->num_iac, 2);
1995 hci_cp.iac_lap[0] = 0x00; /* LIAC */
1996 hci_cp.iac_lap[1] = 0x8b;
1997 hci_cp.iac_lap[2] = 0x9e;
1998 hci_cp.iac_lap[3] = 0x33; /* GIAC */
1999 hci_cp.iac_lap[4] = 0x8b;
2000 hci_cp.iac_lap[5] = 0x9e;
2001 } else {
2002 /* General discoverable mode */
2003 hci_cp.num_iac = 1;
2004 hci_cp.iac_lap[0] = 0x33; /* GIAC */
2005 hci_cp.iac_lap[1] = 0x8b;
2006 hci_cp.iac_lap[2] = 0x9e;
2007 }
2008
2009 hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP,
2010 (hci_cp.num_iac * 3) + 1, &hci_cp);
2011
2012 scan |= SCAN_INQUIRY;
2013 } else {
2014 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2015 }
2016
2017 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan);
2018
2019 update_ad:
2020 update_adv_data(&req);
2021
2022 err = hci_req_run(&req, set_discoverable_complete);
2023 if (err < 0)
2024 mgmt_pending_remove(cmd);
2025
2026 failed:
2027 hci_dev_unlock(hdev);
2028 return err;
2029 }
2030
2031 static void write_fast_connectable(struct hci_request *req, bool enable)
2032 {
2033 struct hci_dev *hdev = req->hdev;
2034 struct hci_cp_write_page_scan_activity acp;
2035 u8 type;
2036
2037 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2038 return;
2039
2040 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2041 return;
2042
2043 if (enable) {
2044 type = PAGE_SCAN_TYPE_INTERLACED;
2045
2046 /* 160 msec page scan interval */
2047 acp.interval = cpu_to_le16(0x0100);
2048 } else {
2049 type = PAGE_SCAN_TYPE_STANDARD; /* default */
2050
2051 /* default 1.28 sec page scan */
2052 acp.interval = cpu_to_le16(0x0800);
2053 }
2054
2055 acp.window = cpu_to_le16(0x0012);
2056
2057 if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval ||
2058 __cpu_to_le16(hdev->page_scan_window) != acp.window)
2059 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
2060 sizeof(acp), &acp);
2061
2062 if (hdev->page_scan_type != type)
2063 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
2064 }
2065
2066 static void set_connectable_complete(struct hci_dev *hdev, u8 status,
2067 u16 opcode)
2068 {
2069 struct mgmt_pending_cmd *cmd;
2070 struct mgmt_mode *cp;
2071 bool conn_changed, discov_changed;
2072
2073 BT_DBG("status 0x%02x", status);
2074
2075 hci_dev_lock(hdev);
2076
2077 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
2078 if (!cmd)
2079 goto unlock;
2080
2081 if (status) {
2082 u8 mgmt_err = mgmt_status(status);
2083 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
2084 goto remove_cmd;
2085 }
2086
2087 cp = cmd->param;
2088 if (cp->val) {
2089 conn_changed = !hci_dev_test_and_set_flag(hdev,
2090 HCI_CONNECTABLE);
2091 discov_changed = false;
2092 } else {
2093 conn_changed = hci_dev_test_and_clear_flag(hdev,
2094 HCI_CONNECTABLE);
2095 discov_changed = hci_dev_test_and_clear_flag(hdev,
2096 HCI_DISCOVERABLE);
2097 }
2098
2099 send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev);
2100
2101 if (conn_changed || discov_changed) {
2102 new_settings(hdev, cmd->sk);
2103 hci_update_page_scan(hdev);
2104 if (discov_changed)
2105 mgmt_update_adv_data(hdev);
2106 hci_update_background_scan(hdev);
2107 }
2108
2109 remove_cmd:
2110 mgmt_pending_remove(cmd);
2111
2112 unlock:
2113 hci_dev_unlock(hdev);
2114 }
2115
2116 static int set_connectable_update_settings(struct hci_dev *hdev,
2117 struct sock *sk, u8 val)
2118 {
2119 bool changed = false;
2120 int err;
2121
2122 if (!!val != hci_dev_test_flag(hdev, HCI_CONNECTABLE))
2123 changed = true;
2124
2125 if (val) {
2126 hci_dev_set_flag(hdev, HCI_CONNECTABLE);
2127 } else {
2128 hci_dev_clear_flag(hdev, HCI_CONNECTABLE);
2129 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2130 }
2131
2132 err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
2133 if (err < 0)
2134 return err;
2135
2136 if (changed) {
2137 hci_update_page_scan(hdev);
2138 hci_update_background_scan(hdev);
2139 return new_settings(hdev, sk);
2140 }
2141
2142 return 0;
2143 }
2144
2145 static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data,
2146 u16 len)
2147 {
2148 struct mgmt_mode *cp = data;
2149 struct mgmt_pending_cmd *cmd;
2150 struct hci_request req;
2151 u8 scan;
2152 int err;
2153
2154 BT_DBG("request for %s", hdev->name);
2155
2156 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
2157 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2158 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2159 MGMT_STATUS_REJECTED);
2160
2161 if (cp->val != 0x00 && cp->val != 0x01)
2162 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2163 MGMT_STATUS_INVALID_PARAMS);
2164
2165 hci_dev_lock(hdev);
2166
2167 if (!hdev_is_powered(hdev)) {
2168 err = set_connectable_update_settings(hdev, sk, cp->val);
2169 goto failed;
2170 }
2171
2172 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
2173 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
2174 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2175 MGMT_STATUS_BUSY);
2176 goto failed;
2177 }
2178
2179 cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len);
2180 if (!cmd) {
2181 err = -ENOMEM;
2182 goto failed;
2183 }
2184
2185 hci_req_init(&req, hdev);
2186
2187 /* If BR/EDR is not enabled and we disable advertising as a
2188 * by-product of disabling connectable, we need to update the
2189 * advertising flags.
2190 */
2191 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2192 if (!cp->val) {
2193 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2194 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2195 }
2196 update_adv_data(&req);
2197 } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) {
2198 if (cp->val) {
2199 scan = SCAN_PAGE;
2200 } else {
2201 /* If we don't have any whitelist entries just
2202 * disable all scanning. If there are entries
2203 * and we had both page and inquiry scanning
2204 * enabled then fall back to only page scanning.
2205 * Otherwise no changes are needed.
2206 */
2207 if (list_empty(&hdev->whitelist))
2208 scan = SCAN_DISABLED;
2209 else if (test_bit(HCI_ISCAN, &hdev->flags))
2210 scan = SCAN_PAGE;
2211 else
2212 goto no_scan_update;
2213
2214 if (test_bit(HCI_ISCAN, &hdev->flags) &&
2215 hdev->discov_timeout > 0)
2216 cancel_delayed_work(&hdev->discov_off);
2217 }
2218
2219 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
2220 }
2221
2222 no_scan_update:
2223 /* Update the advertising parameters if necessary */
2224 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2225 hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
2226 enable_advertising(&req);
2227
2228 err = hci_req_run(&req, set_connectable_complete);
2229 if (err < 0) {
2230 mgmt_pending_remove(cmd);
2231 if (err == -ENODATA)
2232 err = set_connectable_update_settings(hdev, sk,
2233 cp->val);
2234 goto failed;
2235 }
2236
2237 failed:
2238 hci_dev_unlock(hdev);
2239 return err;
2240 }
2241
2242 static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data,
2243 u16 len)
2244 {
2245 struct mgmt_mode *cp = data;
2246 bool changed;
2247 int err;
2248
2249 BT_DBG("request for %s", hdev->name);
2250
2251 if (cp->val != 0x00 && cp->val != 0x01)
2252 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE,
2253 MGMT_STATUS_INVALID_PARAMS);
2254
2255 hci_dev_lock(hdev);
2256
2257 if (cp->val)
2258 changed = !hci_dev_test_and_set_flag(hdev, HCI_BONDABLE);
2259 else
2260 changed = hci_dev_test_and_clear_flag(hdev, HCI_BONDABLE);
2261
2262 err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev);
2263 if (err < 0)
2264 goto unlock;
2265
2266 if (changed)
2267 err = new_settings(hdev, sk);
2268
2269 unlock:
2270 hci_dev_unlock(hdev);
2271 return err;
2272 }
2273
2274 static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data,
2275 u16 len)
2276 {
2277 struct mgmt_mode *cp = data;
2278 struct mgmt_pending_cmd *cmd;
2279 u8 val, status;
2280 int err;
2281
2282 BT_DBG("request for %s", hdev->name);
2283
2284 status = mgmt_bredr_support(hdev);
2285 if (status)
2286 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2287 status);
2288
2289 if (cp->val != 0x00 && cp->val != 0x01)
2290 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2291 MGMT_STATUS_INVALID_PARAMS);
2292
2293 hci_dev_lock(hdev);
2294
2295 if (!hdev_is_powered(hdev)) {
2296 bool changed = false;
2297
2298 if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) {
2299 hci_dev_change_flag(hdev, HCI_LINK_SECURITY);
2300 changed = true;
2301 }
2302
2303 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2304 if (err < 0)
2305 goto failed;
2306
2307 if (changed)
2308 err = new_settings(hdev, sk);
2309
2310 goto failed;
2311 }
2312
2313 if (pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) {
2314 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2315 MGMT_STATUS_BUSY);
2316 goto failed;
2317 }
2318
2319 val = !!cp->val;
2320
2321 if (test_bit(HCI_AUTH, &hdev->flags) == val) {
2322 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2323 goto failed;
2324 }
2325
2326 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len);
2327 if (!cmd) {
2328 err = -ENOMEM;
2329 goto failed;
2330 }
2331
2332 err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val);
2333 if (err < 0) {
2334 mgmt_pending_remove(cmd);
2335 goto failed;
2336 }
2337
2338 failed:
2339 hci_dev_unlock(hdev);
2340 return err;
2341 }
2342
2343 static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2344 {
2345 struct mgmt_mode *cp = data;
2346 struct mgmt_pending_cmd *cmd;
2347 u8 status;
2348 int err;
2349
2350 BT_DBG("request for %s", hdev->name);
2351
2352 status = mgmt_bredr_support(hdev);
2353 if (status)
2354 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status);
2355
2356 if (!lmp_ssp_capable(hdev))
2357 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2358 MGMT_STATUS_NOT_SUPPORTED);
2359
2360 if (cp->val != 0x00 && cp->val != 0x01)
2361 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2362 MGMT_STATUS_INVALID_PARAMS);
2363
2364 hci_dev_lock(hdev);
2365
2366 if (!hdev_is_powered(hdev)) {
2367 bool changed;
2368
2369 if (cp->val) {
2370 changed = !hci_dev_test_and_set_flag(hdev,
2371 HCI_SSP_ENABLED);
2372 } else {
2373 changed = hci_dev_test_and_clear_flag(hdev,
2374 HCI_SSP_ENABLED);
2375 if (!changed)
2376 changed = hci_dev_test_and_clear_flag(hdev,
2377 HCI_HS_ENABLED);
2378 else
2379 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
2380 }
2381
2382 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2383 if (err < 0)
2384 goto failed;
2385
2386 if (changed)
2387 err = new_settings(hdev, sk);
2388
2389 goto failed;
2390 }
2391
2392 if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2393 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2394 MGMT_STATUS_BUSY);
2395 goto failed;
2396 }
2397
2398 if (!!cp->val == hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
2399 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2400 goto failed;
2401 }
2402
2403 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len);
2404 if (!cmd) {
2405 err = -ENOMEM;
2406 goto failed;
2407 }
2408
2409 if (!cp->val && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
2410 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2411 sizeof(cp->val), &cp->val);
2412
2413 err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val);
2414 if (err < 0) {
2415 mgmt_pending_remove(cmd);
2416 goto failed;
2417 }
2418
2419 failed:
2420 hci_dev_unlock(hdev);
2421 return err;
2422 }
2423
2424 static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2425 {
2426 struct mgmt_mode *cp = data;
2427 bool changed;
2428 u8 status;
2429 int err;
2430
2431 BT_DBG("request for %s", hdev->name);
2432
2433 status = mgmt_bredr_support(hdev);
2434 if (status)
2435 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
2436
2437 if (!lmp_ssp_capable(hdev))
2438 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2439 MGMT_STATUS_NOT_SUPPORTED);
2440
2441 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
2442 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2443 MGMT_STATUS_REJECTED);
2444
2445 if (cp->val != 0x00 && cp->val != 0x01)
2446 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2447 MGMT_STATUS_INVALID_PARAMS);
2448
2449 hci_dev_lock(hdev);
2450
2451 if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2452 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2453 MGMT_STATUS_BUSY);
2454 goto unlock;
2455 }
2456
2457 if (cp->val) {
2458 changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED);
2459 } else {
2460 if (hdev_is_powered(hdev)) {
2461 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2462 MGMT_STATUS_REJECTED);
2463 goto unlock;
2464 }
2465
2466 changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED);
2467 }
2468
2469 err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
2470 if (err < 0)
2471 goto unlock;
2472
2473 if (changed)
2474 err = new_settings(hdev, sk);
2475
2476 unlock:
2477 hci_dev_unlock(hdev);
2478 return err;
2479 }
2480
2481 static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2482 {
2483 struct cmd_lookup match = { NULL, hdev };
2484
2485 hci_dev_lock(hdev);
2486
2487 if (status) {
2488 u8 mgmt_err = mgmt_status(status);
2489
2490 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp,
2491 &mgmt_err);
2492 goto unlock;
2493 }
2494
2495 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match);
2496
2497 new_settings(hdev, match.sk);
2498
2499 if (match.sk)
2500 sock_put(match.sk);
2501
2502 /* Make sure the controller has a good default for
2503 * advertising data. Restrict the update to when LE
2504 * has actually been enabled. During power on, the
2505 * update in powered_update_hci will take care of it.
2506 */
2507 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2508 struct hci_request req;
2509
2510 hci_req_init(&req, hdev);
2511 update_adv_data(&req);
2512 update_scan_rsp_data(&req);
2513 __hci_update_background_scan(&req);
2514 hci_req_run(&req, NULL);
2515 }
2516
2517 unlock:
2518 hci_dev_unlock(hdev);
2519 }
2520
2521 static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2522 {
2523 struct mgmt_mode *cp = data;
2524 struct hci_cp_write_le_host_supported hci_cp;
2525 struct mgmt_pending_cmd *cmd;
2526 struct hci_request req;
2527 int err;
2528 u8 val, enabled;
2529
2530 BT_DBG("request for %s", hdev->name);
2531
2532 if (!lmp_le_capable(hdev))
2533 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2534 MGMT_STATUS_NOT_SUPPORTED);
2535
2536 if (cp->val != 0x00 && cp->val != 0x01)
2537 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2538 MGMT_STATUS_INVALID_PARAMS);
2539
2540 /* Bluetooth single mode LE only controllers or dual-mode
2541 * controllers configured as LE only devices, do not allow
2542 * switching LE off. These have either LE enabled explicitly
2543 * or BR/EDR has been previously switched off.
2544 *
2545 * When trying to enable an already enabled LE, then gracefully
2546 * send a positive response. Trying to disable it however will
2547 * result into rejection.
2548 */
2549 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2550 if (cp->val == 0x01)
2551 return send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2552
2553 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2554 MGMT_STATUS_REJECTED);
2555 }
2556
2557 hci_dev_lock(hdev);
2558
2559 val = !!cp->val;
2560 enabled = lmp_host_le_capable(hdev);
2561
2562 if (!val)
2563 clear_adv_instance(hdev, NULL, 0x00, true);
2564
2565 if (!hdev_is_powered(hdev) || val == enabled) {
2566 bool changed = false;
2567
2568 if (val != hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2569 hci_dev_change_flag(hdev, HCI_LE_ENABLED);
2570 changed = true;
2571 }
2572
2573 if (!val && hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
2574 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2575 changed = true;
2576 }
2577
2578 err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2579 if (err < 0)
2580 goto unlock;
2581
2582 if (changed)
2583 err = new_settings(hdev, sk);
2584
2585 goto unlock;
2586 }
2587
2588 if (pending_find(MGMT_OP_SET_LE, hdev) ||
2589 pending_find(MGMT_OP_SET_ADVERTISING, hdev)) {
2590 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2591 MGMT_STATUS_BUSY);
2592 goto unlock;
2593 }
2594
2595 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len);
2596 if (!cmd) {
2597 err = -ENOMEM;
2598 goto unlock;
2599 }
2600
2601 hci_req_init(&req, hdev);
2602
2603 memset(&hci_cp, 0, sizeof(hci_cp));
2604
2605 if (val) {
2606 hci_cp.le = val;
2607 hci_cp.simul = 0x00;
2608 } else {
2609 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
2610 disable_advertising(&req);
2611 }
2612
2613 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp),
2614 &hci_cp);
2615
2616 err = hci_req_run(&req, le_enable_complete);
2617 if (err < 0)
2618 mgmt_pending_remove(cmd);
2619
2620 unlock:
2621 hci_dev_unlock(hdev);
2622 return err;
2623 }
2624
2625 /* This is a helper function to test for pending mgmt commands that can
2626 * cause CoD or EIR HCI commands. We can only allow one such pending
2627 * mgmt command at a time since otherwise we cannot easily track what
2628 * the current values are, will be, and based on that calculate if a new
2629 * HCI command needs to be sent and if yes with what value.
2630 */
2631 static bool pending_eir_or_class(struct hci_dev *hdev)
2632 {
2633 struct mgmt_pending_cmd *cmd;
2634
2635 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
2636 switch (cmd->opcode) {
2637 case MGMT_OP_ADD_UUID:
2638 case MGMT_OP_REMOVE_UUID:
2639 case MGMT_OP_SET_DEV_CLASS:
2640 case MGMT_OP_SET_POWERED:
2641 return true;
2642 }
2643 }
2644
2645 return false;
2646 }
2647
2648 static const u8 bluetooth_base_uuid[] = {
2649 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
2650 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2651 };
2652
2653 static u8 get_uuid_size(const u8 *uuid)
2654 {
2655 u32 val;
2656
2657 if (memcmp(uuid, bluetooth_base_uuid, 12))
2658 return 128;
2659
2660 val = get_unaligned_le32(&uuid[12]);
2661 if (val > 0xffff)
2662 return 32;
2663
2664 return 16;
2665 }
2666
2667 static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status)
2668 {
2669 struct mgmt_pending_cmd *cmd;
2670
2671 hci_dev_lock(hdev);
2672
2673 cmd = pending_find(mgmt_op, hdev);
2674 if (!cmd)
2675 goto unlock;
2676
2677 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
2678 mgmt_status(status), hdev->dev_class, 3);
2679
2680 mgmt_pending_remove(cmd);
2681
2682 unlock:
2683 hci_dev_unlock(hdev);
2684 }
2685
2686 static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2687 {
2688 BT_DBG("status 0x%02x", status);
2689
2690 mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status);
2691 }
2692
2693 static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2694 {
2695 struct mgmt_cp_add_uuid *cp = data;
2696 struct mgmt_pending_cmd *cmd;
2697 struct hci_request req;
2698 struct bt_uuid *uuid;
2699 int err;
2700
2701 BT_DBG("request for %s", hdev->name);
2702
2703 hci_dev_lock(hdev);
2704
2705 if (pending_eir_or_class(hdev)) {
2706 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID,
2707 MGMT_STATUS_BUSY);
2708 goto failed;
2709 }
2710
2711 uuid = kmalloc(sizeof(*uuid), GFP_KERNEL);
2712 if (!uuid) {
2713 err = -ENOMEM;
2714 goto failed;
2715 }
2716
2717 memcpy(uuid->uuid, cp->uuid, 16);
2718 uuid->svc_hint = cp->svc_hint;
2719 uuid->size = get_uuid_size(cp->uuid);
2720
2721 list_add_tail(&uuid->list, &hdev->uuids);
2722
2723 hci_req_init(&req, hdev);
2724
2725 update_class(&req);
2726 update_eir(&req);
2727
2728 err = hci_req_run(&req, add_uuid_complete);
2729 if (err < 0) {
2730 if (err != -ENODATA)
2731 goto failed;
2732
2733 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0,
2734 hdev->dev_class, 3);
2735 goto failed;
2736 }
2737
2738 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len);
2739 if (!cmd) {
2740 err = -ENOMEM;
2741 goto failed;
2742 }
2743
2744 err = 0;
2745
2746 failed:
2747 hci_dev_unlock(hdev);
2748 return err;
2749 }
2750
2751 static bool enable_service_cache(struct hci_dev *hdev)
2752 {
2753 if (!hdev_is_powered(hdev))
2754 return false;
2755
2756 if (!hci_dev_test_and_set_flag(hdev, HCI_SERVICE_CACHE)) {
2757 queue_delayed_work(hdev->workqueue, &hdev->service_cache,
2758 CACHE_TIMEOUT);
2759 return true;
2760 }
2761
2762 return false;
2763 }
2764
2765 static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2766 {
2767 BT_DBG("status 0x%02x", status);
2768
2769 mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status);
2770 }
2771
2772 static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
2773 u16 len)
2774 {
2775 struct mgmt_cp_remove_uuid *cp = data;
2776 struct mgmt_pending_cmd *cmd;
2777 struct bt_uuid *match, *tmp;
2778 u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
2779 struct hci_request req;
2780 int err, found;
2781
2782 BT_DBG("request for %s", hdev->name);
2783
2784 hci_dev_lock(hdev);
2785
2786 if (pending_eir_or_class(hdev)) {
2787 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2788 MGMT_STATUS_BUSY);
2789 goto unlock;
2790 }
2791
2792 if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) {
2793 hci_uuids_clear(hdev);
2794
2795 if (enable_service_cache(hdev)) {
2796 err = mgmt_cmd_complete(sk, hdev->id,
2797 MGMT_OP_REMOVE_UUID,
2798 0, hdev->dev_class, 3);
2799 goto unlock;
2800 }
2801
2802 goto update_class;
2803 }
2804
2805 found = 0;
2806
2807 list_for_each_entry_safe(match, tmp, &hdev->uuids, list) {
2808 if (memcmp(match->uuid, cp->uuid, 16) != 0)
2809 continue;
2810
2811 list_del(&match->list);
2812 kfree(match);
2813 found++;
2814 }
2815
2816 if (found == 0) {
2817 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2818 MGMT_STATUS_INVALID_PARAMS);
2819 goto unlock;
2820 }
2821
2822 update_class:
2823 hci_req_init(&req, hdev);
2824
2825 update_class(&req);
2826 update_eir(&req);
2827
2828 err = hci_req_run(&req, remove_uuid_complete);
2829 if (err < 0) {
2830 if (err != -ENODATA)
2831 goto unlock;
2832
2833 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0,
2834 hdev->dev_class, 3);
2835 goto unlock;
2836 }
2837
2838 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len);
2839 if (!cmd) {
2840 err = -ENOMEM;
2841 goto unlock;
2842 }
2843
2844 err = 0;
2845
2846 unlock:
2847 hci_dev_unlock(hdev);
2848 return err;
2849 }
2850
2851 static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2852 {
2853 BT_DBG("status 0x%02x", status);
2854
2855 mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status);
2856 }
2857
2858 static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
2859 u16 len)
2860 {
2861 struct mgmt_cp_set_dev_class *cp = data;
2862 struct mgmt_pending_cmd *cmd;
2863 struct hci_request req;
2864 int err;
2865
2866 BT_DBG("request for %s", hdev->name);
2867
2868 if (!lmp_bredr_capable(hdev))
2869 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2870 MGMT_STATUS_NOT_SUPPORTED);
2871
2872 hci_dev_lock(hdev);
2873
2874 if (pending_eir_or_class(hdev)) {
2875 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2876 MGMT_STATUS_BUSY);
2877 goto unlock;
2878 }
2879
2880 if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
2881 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2882 MGMT_STATUS_INVALID_PARAMS);
2883 goto unlock;
2884 }
2885
2886 hdev->major_class = cp->major;
2887 hdev->minor_class = cp->minor;
2888
2889 if (!hdev_is_powered(hdev)) {
2890 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2891 hdev->dev_class, 3);
2892 goto unlock;
2893 }
2894
2895 hci_req_init(&req, hdev);
2896
2897 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) {
2898 hci_dev_unlock(hdev);
2899 cancel_delayed_work_sync(&hdev->service_cache);
2900 hci_dev_lock(hdev);
2901 update_eir(&req);
2902 }
2903
2904 update_class(&req);
2905
2906 err = hci_req_run(&req, set_class_complete);
2907 if (err < 0) {
2908 if (err != -ENODATA)
2909 goto unlock;
2910
2911 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2912 hdev->dev_class, 3);
2913 goto unlock;
2914 }
2915
2916 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len);
2917 if (!cmd) {
2918 err = -ENOMEM;
2919 goto unlock;
2920 }
2921
2922 err = 0;
2923
2924 unlock:
2925 hci_dev_unlock(hdev);
2926 return err;
2927 }
2928
2929 static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
2930 u16 len)
2931 {
2932 struct mgmt_cp_load_link_keys *cp = data;
2933 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
2934 sizeof(struct mgmt_link_key_info));
2935 u16 key_count, expected_len;
2936 bool changed;
2937 int i;
2938
2939 BT_DBG("request for %s", hdev->name);
2940
2941 if (!lmp_bredr_capable(hdev))
2942 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2943 MGMT_STATUS_NOT_SUPPORTED);
2944
2945 key_count = __le16_to_cpu(cp->key_count);
2946 if (key_count > max_key_count) {
2947 BT_ERR("load_link_keys: too big key_count value %u",
2948 key_count);
2949 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2950 MGMT_STATUS_INVALID_PARAMS);
2951 }
2952
2953 expected_len = sizeof(*cp) + key_count *
2954 sizeof(struct mgmt_link_key_info);
2955 if (expected_len != len) {
2956 BT_ERR("load_link_keys: expected %u bytes, got %u bytes",
2957 expected_len, len);
2958 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2959 MGMT_STATUS_INVALID_PARAMS);
2960 }
2961
2962 if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01)
2963 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2964 MGMT_STATUS_INVALID_PARAMS);
2965
2966 BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys,
2967 key_count);
2968
2969 for (i = 0; i < key_count; i++) {
2970 struct mgmt_link_key_info *key = &cp->keys[i];
2971
2972 if (key->addr.type != BDADDR_BREDR || key->type > 0x08)
2973 return mgmt_cmd_status(sk, hdev->id,
2974 MGMT_OP_LOAD_LINK_KEYS,
2975 MGMT_STATUS_INVALID_PARAMS);
2976 }
2977
2978 hci_dev_lock(hdev);
2979
2980 hci_link_keys_clear(hdev);
2981
2982 if (cp->debug_keys)
2983 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
2984 else
2985 changed = hci_dev_test_and_clear_flag(hdev,
2986 HCI_KEEP_DEBUG_KEYS);
2987
2988 if (changed)
2989 new_settings(hdev, NULL);
2990
2991 for (i = 0; i < key_count; i++) {
2992 struct mgmt_link_key_info *key = &cp->keys[i];
2993
2994 /* Always ignore debug keys and require a new pairing if
2995 * the user wants to use them.
2996 */
2997 if (key->type == HCI_LK_DEBUG_COMBINATION)
2998 continue;
2999
3000 hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
3001 key->type, key->pin_len, NULL);
3002 }
3003
3004 mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0);
3005
3006 hci_dev_unlock(hdev);
3007
3008 return 0;
3009 }
3010
3011 static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr,
3012 u8 addr_type, struct sock *skip_sk)
3013 {
3014 struct mgmt_ev_device_unpaired ev;
3015
3016 bacpy(&ev.addr.bdaddr, bdaddr);
3017 ev.addr.type = addr_type;
3018
3019 return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev),
3020 skip_sk);
3021 }
3022
3023 static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3024 u16 len)
3025 {
3026 struct mgmt_cp_unpair_device *cp = data;
3027 struct mgmt_rp_unpair_device rp;
3028 struct hci_conn_params *params;
3029 struct mgmt_pending_cmd *cmd;
3030 struct hci_conn *conn;
3031 u8 addr_type;
3032 int err;
3033
3034 memset(&rp, 0, sizeof(rp));
3035 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3036 rp.addr.type = cp->addr.type;
3037
3038 if (!bdaddr_type_is_valid(cp->addr.type))
3039 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3040 MGMT_STATUS_INVALID_PARAMS,
3041 &rp, sizeof(rp));
3042
3043 if (cp->disconnect != 0x00 && cp->disconnect != 0x01)
3044 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3045 MGMT_STATUS_INVALID_PARAMS,
3046 &rp, sizeof(rp));
3047
3048 hci_dev_lock(hdev);
3049
3050 if (!hdev_is_powered(hdev)) {
3051 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3052 MGMT_STATUS_NOT_POWERED, &rp,
3053 sizeof(rp));
3054 goto unlock;
3055 }
3056
3057 if (cp->addr.type == BDADDR_BREDR) {
3058 /* If disconnection is requested, then look up the
3059 * connection. If the remote device is connected, it
3060 * will be later used to terminate the link.
3061 *
3062 * Setting it to NULL explicitly will cause no
3063 * termination of the link.
3064 */
3065 if (cp->disconnect)
3066 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3067 &cp->addr.bdaddr);
3068 else
3069 conn = NULL;
3070
3071 err = hci_remove_link_key(hdev, &cp->addr.bdaddr);
3072 if (err < 0) {
3073 err = mgmt_cmd_complete(sk, hdev->id,
3074 MGMT_OP_UNPAIR_DEVICE,
3075 MGMT_STATUS_NOT_PAIRED, &rp,
3076 sizeof(rp));
3077 goto unlock;
3078 }
3079
3080 goto done;
3081 }
3082
3083 /* LE address type */
3084 addr_type = le_addr_type(cp->addr.type);
3085
3086 /* Abort any ongoing SMP pairing. Removes ltk and irk if they exist. */
3087 err = smp_cancel_and_remove_pairing(hdev, &cp->addr.bdaddr, addr_type);
3088 if (err < 0) {
3089 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3090 MGMT_STATUS_NOT_PAIRED, &rp,
3091 sizeof(rp));
3092 goto unlock;
3093 }
3094
3095 conn = hci_conn_hash_lookup_le(hdev, &cp->addr.bdaddr, addr_type);
3096 if (!conn) {
3097 hci_conn_params_del(hdev, &cp->addr.bdaddr, addr_type);
3098 goto done;
3099 }
3100
3101
3102 /* Defer clearing up the connection parameters until closing to
3103 * give a chance of keeping them if a repairing happens.
3104 */
3105 set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3106
3107 /* Disable auto-connection parameters if present */
3108 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, addr_type);
3109 if (params) {
3110 if (params->explicit_connect)
3111 params->auto_connect = HCI_AUTO_CONN_EXPLICIT;
3112 else
3113 params->auto_connect = HCI_AUTO_CONN_DISABLED;
3114 }
3115
3116 /* If disconnection is not requested, then clear the connection
3117 * variable so that the link is not terminated.
3118 */
3119 if (!cp->disconnect)
3120 conn = NULL;
3121
3122 done:
3123 /* If the connection variable is set, then termination of the
3124 * link is requested.
3125 */
3126 if (!conn) {
3127 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0,
3128 &rp, sizeof(rp));
3129 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk);
3130 goto unlock;
3131 }
3132
3133 cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp,
3134 sizeof(*cp));
3135 if (!cmd) {
3136 err = -ENOMEM;
3137 goto unlock;
3138 }
3139
3140 cmd->cmd_complete = addr_cmd_complete;
3141
3142 err = hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
3143 if (err < 0)
3144 mgmt_pending_remove(cmd);
3145
3146 unlock:
3147 hci_dev_unlock(hdev);
3148 return err;
3149 }
3150
3151 static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
3152 u16 len)
3153 {
3154 struct mgmt_cp_disconnect *cp = data;
3155 struct mgmt_rp_disconnect rp;
3156 struct mgmt_pending_cmd *cmd;
3157 struct hci_conn *conn;
3158 int err;
3159
3160 BT_DBG("");
3161
3162 memset(&rp, 0, sizeof(rp));
3163 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3164 rp.addr.type = cp->addr.type;
3165
3166 if (!bdaddr_type_is_valid(cp->addr.type))
3167 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3168 MGMT_STATUS_INVALID_PARAMS,
3169 &rp, sizeof(rp));
3170
3171 hci_dev_lock(hdev);
3172
3173 if (!test_bit(HCI_UP, &hdev->flags)) {
3174 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3175 MGMT_STATUS_NOT_POWERED, &rp,
3176 sizeof(rp));
3177 goto failed;
3178 }
3179
3180 if (pending_find(MGMT_OP_DISCONNECT, hdev)) {
3181 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3182 MGMT_STATUS_BUSY, &rp, sizeof(rp));
3183 goto failed;
3184 }
3185
3186 if (cp->addr.type == BDADDR_BREDR)
3187 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3188 &cp->addr.bdaddr);
3189 else
3190 conn = hci_conn_hash_lookup_le(hdev, &cp->addr.bdaddr,
3191 le_addr_type(cp->addr.type));
3192
3193 if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) {
3194 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3195 MGMT_STATUS_NOT_CONNECTED, &rp,
3196 sizeof(rp));
3197 goto failed;
3198 }
3199
3200 cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len);
3201 if (!cmd) {
3202 err = -ENOMEM;
3203 goto failed;
3204 }
3205
3206 cmd->cmd_complete = generic_cmd_complete;
3207
3208 err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM);
3209 if (err < 0)
3210 mgmt_pending_remove(cmd);
3211
3212 failed:
3213 hci_dev_unlock(hdev);
3214 return err;
3215 }
3216
3217 static u8 link_to_bdaddr(u8 link_type, u8 addr_type)
3218 {
3219 switch (link_type) {
3220 case LE_LINK:
3221 switch (addr_type) {
3222 case ADDR_LE_DEV_PUBLIC:
3223 return BDADDR_LE_PUBLIC;
3224
3225 default:
3226 /* Fallback to LE Random address type */
3227 return BDADDR_LE_RANDOM;
3228 }
3229
3230 default:
3231 /* Fallback to BR/EDR type */
3232 return BDADDR_BREDR;
3233 }
3234 }
3235
3236 static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data,
3237 u16 data_len)
3238 {
3239 struct mgmt_rp_get_connections *rp;
3240 struct hci_conn *c;
3241 size_t rp_len;
3242 int err;
3243 u16 i;
3244
3245 BT_DBG("");
3246
3247 hci_dev_lock(hdev);
3248
3249 if (!hdev_is_powered(hdev)) {
3250 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS,
3251 MGMT_STATUS_NOT_POWERED);
3252 goto unlock;
3253 }
3254
3255 i = 0;
3256 list_for_each_entry(c, &hdev->conn_hash.list, list) {
3257 if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3258 i++;
3259 }
3260
3261 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3262 rp = kmalloc(rp_len, GFP_KERNEL);
3263 if (!rp) {
3264 err = -ENOMEM;
3265 goto unlock;
3266 }
3267
3268 i = 0;
3269 list_for_each_entry(c, &hdev->conn_hash.list, list) {
3270 if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3271 continue;
3272 bacpy(&rp->addr[i].bdaddr, &c->dst);
3273 rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type);
3274 if (c->type == SCO_LINK || c->type == ESCO_LINK)
3275 continue;
3276 i++;
3277 }
3278
3279 rp->conn_count = cpu_to_le16(i);
3280
3281 /* Recalculate length in case of filtered SCO connections, etc */
3282 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3283
3284 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp,
3285 rp_len);
3286
3287 kfree(rp);
3288
3289 unlock:
3290 hci_dev_unlock(hdev);
3291 return err;
3292 }
3293
3294 static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3295 struct mgmt_cp_pin_code_neg_reply *cp)
3296 {
3297 struct mgmt_pending_cmd *cmd;
3298 int err;
3299
3300 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp,
3301 sizeof(*cp));
3302 if (!cmd)
3303 return -ENOMEM;
3304
3305 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3306 sizeof(cp->addr.bdaddr), &cp->addr.bdaddr);
3307 if (err < 0)
3308 mgmt_pending_remove(cmd);
3309
3310 return err;
3311 }
3312
3313 static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3314 u16 len)
3315 {
3316 struct hci_conn *conn;
3317 struct mgmt_cp_pin_code_reply *cp = data;
3318 struct hci_cp_pin_code_reply reply;
3319 struct mgmt_pending_cmd *cmd;
3320 int err;
3321
3322 BT_DBG("");
3323
3324 hci_dev_lock(hdev);
3325
3326 if (!hdev_is_powered(hdev)) {
3327 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3328 MGMT_STATUS_NOT_POWERED);
3329 goto failed;
3330 }
3331
3332 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr);
3333 if (!conn) {
3334 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3335 MGMT_STATUS_NOT_CONNECTED);
3336 goto failed;
3337 }
3338
3339 if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) {
3340 struct mgmt_cp_pin_code_neg_reply ncp;
3341
3342 memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr));
3343
3344 BT_ERR("PIN code is not 16 bytes long");
3345
3346 err = send_pin_code_neg_reply(sk, hdev, &ncp);
3347 if (err >= 0)
3348 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3349 MGMT_STATUS_INVALID_PARAMS);
3350
3351 goto failed;
3352 }
3353
3354 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len);
3355 if (!cmd) {
3356 err = -ENOMEM;
3357 goto failed;
3358 }
3359
3360 cmd->cmd_complete = addr_cmd_complete;
3361
3362 bacpy(&reply.bdaddr, &cp->addr.bdaddr);
3363 reply.pin_len = cp->pin_len;
3364 memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code));
3365
3366 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply);
3367 if (err < 0)
3368 mgmt_pending_remove(cmd);
3369
3370 failed:
3371 hci_dev_unlock(hdev);
3372 return err;
3373 }
3374
3375 static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data,
3376 u16 len)
3377 {
3378 struct mgmt_cp_set_io_capability *cp = data;
3379
3380 BT_DBG("");
3381
3382 if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY)
3383 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY,
3384 MGMT_STATUS_INVALID_PARAMS, NULL, 0);
3385
3386 hci_dev_lock(hdev);
3387
3388 hdev->io_capability = cp->io_capability;
3389
3390 BT_DBG("%s IO capability set to 0x%02x", hdev->name,
3391 hdev->io_capability);
3392
3393 hci_dev_unlock(hdev);
3394
3395 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0,
3396 NULL, 0);
3397 }
3398
3399 static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn)
3400 {
3401 struct hci_dev *hdev = conn->hdev;
3402 struct mgmt_pending_cmd *cmd;
3403
3404 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
3405 if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
3406 continue;
3407
3408 if (cmd->user_data != conn)
3409 continue;
3410
3411 return cmd;
3412 }
3413
3414 return NULL;
3415 }
3416
3417 static int pairing_complete(struct mgmt_pending_cmd *cmd, u8 status)
3418 {
3419 struct mgmt_rp_pair_device rp;
3420 struct hci_conn *conn = cmd->user_data;
3421 int err;
3422
3423 bacpy(&rp.addr.bdaddr, &conn->dst);
3424 rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
3425
3426 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE,
3427 status, &rp, sizeof(rp));
3428
3429 /* So we don't get further callbacks for this connection */
3430 conn->connect_cfm_cb = NULL;
3431 conn->security_cfm_cb = NULL;
3432 conn->disconn_cfm_cb = NULL;
3433
3434 hci_conn_drop(conn);
3435
3436 /* The device is paired so there is no need to remove
3437 * its connection parameters anymore.
3438 */
3439 clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3440
3441 hci_conn_put(conn);
3442
3443 return err;
3444 }
3445
3446 void mgmt_smp_complete(struct hci_conn *conn, bool complete)
3447 {
3448 u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
3449 struct mgmt_pending_cmd *cmd;
3450
3451 cmd = find_pairing(conn);
3452 if (cmd) {
3453 cmd->cmd_complete(cmd, status);
3454 mgmt_pending_remove(cmd);
3455 }
3456 }
3457
3458 static void pairing_complete_cb(struct hci_conn *conn, u8 status)
3459 {
3460 struct mgmt_pending_cmd *cmd;
3461
3462 BT_DBG("status %u", status);
3463
3464 cmd = find_pairing(conn);
3465 if (!cmd) {
3466 BT_DBG("Unable to find a pending command");
3467 return;
3468 }
3469
3470 cmd->cmd_complete(cmd, mgmt_status(status));
3471 mgmt_pending_remove(cmd);
3472 }
3473
3474 static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
3475 {
3476 struct mgmt_pending_cmd *cmd;
3477
3478 BT_DBG("status %u", status);
3479
3480 if (!status)
3481 return;
3482
3483 cmd = find_pairing(conn);
3484 if (!cmd) {
3485 BT_DBG("Unable to find a pending command");
3486 return;
3487 }
3488
3489 cmd->cmd_complete(cmd, mgmt_status(status));
3490 mgmt_pending_remove(cmd);
3491 }
3492
3493 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3494 u16 len)
3495 {
3496 struct mgmt_cp_pair_device *cp = data;
3497 struct mgmt_rp_pair_device rp;
3498 struct mgmt_pending_cmd *cmd;
3499 u8 sec_level, auth_type;
3500 struct hci_conn *conn;
3501 int err;
3502
3503 BT_DBG("");
3504
3505 memset(&rp, 0, sizeof(rp));
3506 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3507 rp.addr.type = cp->addr.type;
3508
3509 if (!bdaddr_type_is_valid(cp->addr.type))
3510 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3511 MGMT_STATUS_INVALID_PARAMS,
3512 &rp, sizeof(rp));
3513
3514 if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY)
3515 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3516 MGMT_STATUS_INVALID_PARAMS,
3517 &rp, sizeof(rp));
3518
3519 hci_dev_lock(hdev);
3520
3521 if (!hdev_is_powered(hdev)) {
3522 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3523 MGMT_STATUS_NOT_POWERED, &rp,
3524 sizeof(rp));
3525 goto unlock;
3526 }
3527
3528 if (hci_bdaddr_is_paired(hdev, &cp->addr.bdaddr, cp->addr.type)) {
3529 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3530 MGMT_STATUS_ALREADY_PAIRED, &rp,
3531 sizeof(rp));
3532 goto unlock;
3533 }
3534
3535 sec_level = BT_SECURITY_MEDIUM;
3536 auth_type = HCI_AT_DEDICATED_BONDING;
3537
3538 if (cp->addr.type == BDADDR_BREDR) {
3539 conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
3540 auth_type);
3541 } else {
3542 u8 addr_type = le_addr_type(cp->addr.type);
3543 struct hci_conn_params *p;
3544
3545 /* When pairing a new device, it is expected to remember
3546 * this device for future connections. Adding the connection
3547 * parameter information ahead of time allows tracking
3548 * of the slave preferred values and will speed up any
3549 * further connection establishment.
3550 *
3551 * If connection parameters already exist, then they
3552 * will be kept and this function does nothing.
3553 */
3554 p = hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
3555
3556 if (p->auto_connect == HCI_AUTO_CONN_EXPLICIT)
3557 p->auto_connect = HCI_AUTO_CONN_DISABLED;
3558
3559 conn = hci_connect_le_scan(hdev, &cp->addr.bdaddr,
3560 addr_type, sec_level,
3561 HCI_LE_CONN_TIMEOUT,
3562 HCI_ROLE_MASTER);
3563 }
3564
3565 if (IS_ERR(conn)) {
3566 int status;
3567
3568 if (PTR_ERR(conn) == -EBUSY)
3569 status = MGMT_STATUS_BUSY;
3570 else if (PTR_ERR(conn) == -EOPNOTSUPP)
3571 status = MGMT_STATUS_NOT_SUPPORTED;
3572 else if (PTR_ERR(conn) == -ECONNREFUSED)
3573 status = MGMT_STATUS_REJECTED;
3574 else
3575 status = MGMT_STATUS_CONNECT_FAILED;
3576
3577 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3578 status, &rp, sizeof(rp));
3579 goto unlock;
3580 }
3581
3582 if (conn->connect_cfm_cb) {
3583 hci_conn_drop(conn);
3584 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3585 MGMT_STATUS_BUSY, &rp, sizeof(rp));
3586 goto unlock;
3587 }
3588
3589 cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
3590 if (!cmd) {
3591 err = -ENOMEM;
3592 hci_conn_drop(conn);
3593 goto unlock;
3594 }
3595
3596 cmd->cmd_complete = pairing_complete;
3597
3598 /* For LE, just connecting isn't a proof that the pairing finished */
3599 if (cp->addr.type == BDADDR_BREDR) {
3600 conn->connect_cfm_cb = pairing_complete_cb;
3601 conn->security_cfm_cb = pairing_complete_cb;
3602 conn->disconn_cfm_cb = pairing_complete_cb;
3603 } else {
3604 conn->connect_cfm_cb = le_pairing_complete_cb;
3605 conn->security_cfm_cb = le_pairing_complete_cb;
3606 conn->disconn_cfm_cb = le_pairing_complete_cb;
3607 }
3608
3609 conn->io_capability = cp->io_cap;
3610 cmd->user_data = hci_conn_get(conn);
3611
3612 if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) &&
3613 hci_conn_security(conn, sec_level, auth_type, true)) {
3614 cmd->cmd_complete(cmd, 0);
3615 mgmt_pending_remove(cmd);
3616 }
3617
3618 err = 0;
3619
3620 unlock:
3621 hci_dev_unlock(hdev);
3622 return err;
3623 }
3624
3625 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3626 u16 len)
3627 {
3628 struct mgmt_addr_info *addr = data;
3629 struct mgmt_pending_cmd *cmd;
3630 struct hci_conn *conn;
3631 int err;
3632
3633 BT_DBG("");
3634
3635 hci_dev_lock(hdev);
3636
3637 if (!hdev_is_powered(hdev)) {
3638 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3639 MGMT_STATUS_NOT_POWERED);
3640 goto unlock;
3641 }
3642
3643 cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev);
3644 if (!cmd) {
3645 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3646 MGMT_STATUS_INVALID_PARAMS);
3647 goto unlock;
3648 }
3649
3650 conn = cmd->user_data;
3651
3652 if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
3653 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3654 MGMT_STATUS_INVALID_PARAMS);
3655 goto unlock;
3656 }
3657
3658 cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
3659 mgmt_pending_remove(cmd);
3660
3661 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
3662 addr, sizeof(*addr));
3663 unlock:
3664 hci_dev_unlock(hdev);
3665 return err;
3666 }
3667
3668 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev,
3669 struct mgmt_addr_info *addr, u16 mgmt_op,
3670 u16 hci_op, __le32 passkey)
3671 {
3672 struct mgmt_pending_cmd *cmd;
3673 struct hci_conn *conn;
3674 int err;
3675
3676 hci_dev_lock(hdev);
3677
3678 if (!hdev_is_powered(hdev)) {
3679 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3680 MGMT_STATUS_NOT_POWERED, addr,
3681 sizeof(*addr));
3682 goto done;
3683 }
3684
3685 if (addr->type == BDADDR_BREDR)
3686 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr);
3687 else
3688 conn = hci_conn_hash_lookup_le(hdev, &addr->bdaddr,
3689 le_addr_type(addr->type));
3690
3691 if (!conn) {
3692 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3693 MGMT_STATUS_NOT_CONNECTED, addr,
3694 sizeof(*addr));
3695 goto done;
3696 }
3697
3698 if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) {
3699 err = smp_user_confirm_reply(conn, mgmt_op, passkey);
3700 if (!err)
3701 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3702 MGMT_STATUS_SUCCESS, addr,
3703 sizeof(*addr));
3704 else
3705 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3706 MGMT_STATUS_FAILED, addr,
3707 sizeof(*addr));
3708
3709 goto done;
3710 }
3711
3712 cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr));
3713 if (!cmd) {
3714 err = -ENOMEM;
3715 goto done;
3716 }
3717
3718 cmd->cmd_complete = addr_cmd_complete;
3719
3720 /* Continue with pairing via HCI */
3721 if (hci_op == HCI_OP_USER_PASSKEY_REPLY) {
3722 struct hci_cp_user_passkey_reply cp;
3723
3724 bacpy(&cp.bdaddr, &addr->bdaddr);
3725 cp.passkey = passkey;
3726 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp);
3727 } else
3728 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr),
3729 &addr->bdaddr);
3730
3731 if (err < 0)
3732 mgmt_pending_remove(cmd);
3733
3734 done:
3735 hci_dev_unlock(hdev);
3736 return err;
3737 }
3738
3739 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3740 void *data, u16 len)
3741 {
3742 struct mgmt_cp_pin_code_neg_reply *cp = data;
3743
3744 BT_DBG("");
3745
3746 return user_pairing_resp(sk, hdev, &cp->addr,
3747 MGMT_OP_PIN_CODE_NEG_REPLY,
3748 HCI_OP_PIN_CODE_NEG_REPLY, 0);
3749 }
3750
3751 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3752 u16 len)
3753 {
3754 struct mgmt_cp_user_confirm_reply *cp = data;
3755
3756 BT_DBG("");
3757
3758 if (len != sizeof(*cp))
3759 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY,
3760 MGMT_STATUS_INVALID_PARAMS);
3761
3762 return user_pairing_resp(sk, hdev, &cp->addr,
3763 MGMT_OP_USER_CONFIRM_REPLY,
3764 HCI_OP_USER_CONFIRM_REPLY, 0);
3765 }
3766
3767 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev,
3768 void *data, u16 len)
3769 {
3770 struct mgmt_cp_user_confirm_neg_reply *cp = data;
3771
3772 BT_DBG("");
3773
3774 return user_pairing_resp(sk, hdev, &cp->addr,
3775 MGMT_OP_USER_CONFIRM_NEG_REPLY,
3776 HCI_OP_USER_CONFIRM_NEG_REPLY, 0);
3777 }
3778
3779 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3780 u16 len)
3781 {
3782 struct mgmt_cp_user_passkey_reply *cp = data;
3783
3784 BT_DBG("");
3785
3786 return user_pairing_resp(sk, hdev, &cp->addr,
3787 MGMT_OP_USER_PASSKEY_REPLY,
3788 HCI_OP_USER_PASSKEY_REPLY, cp->passkey);
3789 }
3790
3791 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
3792 void *data, u16 len)
3793 {
3794 struct mgmt_cp_user_passkey_neg_reply *cp = data;
3795
3796 BT_DBG("");
3797
3798 return user_pairing_resp(sk, hdev, &cp->addr,
3799 MGMT_OP_USER_PASSKEY_NEG_REPLY,
3800 HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
3801 }
3802
3803 static void update_name(struct hci_request *req)
3804 {
3805 struct hci_dev *hdev = req->hdev;
3806 struct hci_cp_write_local_name cp;
3807
3808 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3809
3810 hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
3811 }
3812
3813 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode)
3814 {
3815 struct mgmt_cp_set_local_name *cp;
3816 struct mgmt_pending_cmd *cmd;
3817
3818 BT_DBG("status 0x%02x", status);
3819
3820 hci_dev_lock(hdev);
3821
3822 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
3823 if (!cmd)
3824 goto unlock;
3825
3826 cp = cmd->param;
3827
3828 if (status)
3829 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
3830 mgmt_status(status));
3831 else
3832 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3833 cp, sizeof(*cp));
3834
3835 mgmt_pending_remove(cmd);
3836
3837 unlock:
3838 hci_dev_unlock(hdev);
3839 }
3840
3841 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
3842 u16 len)
3843 {
3844 struct mgmt_cp_set_local_name *cp = data;
3845 struct mgmt_pending_cmd *cmd;
3846 struct hci_request req;
3847 int err;
3848
3849 BT_DBG("");
3850
3851 hci_dev_lock(hdev);
3852
3853 /* If the old values are the same as the new ones just return a
3854 * direct command complete event.
3855 */
3856 if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) &&
3857 !memcmp(hdev->short_name, cp->short_name,
3858 sizeof(hdev->short_name))) {
3859 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3860 data, len);
3861 goto failed;
3862 }
3863
3864 memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
3865
3866 if (!hdev_is_powered(hdev)) {
3867 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3868
3869 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3870 data, len);
3871 if (err < 0)
3872 goto failed;
3873
3874 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev,
3875 data, len, sk);
3876
3877 goto failed;
3878 }
3879
3880 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len);
3881 if (!cmd) {
3882 err = -ENOMEM;
3883 goto failed;
3884 }
3885
3886 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3887
3888 hci_req_init(&req, hdev);
3889
3890 if (lmp_bredr_capable(hdev)) {
3891 update_name(&req);
3892 update_eir(&req);
3893 }
3894
3895 /* The name is stored in the scan response data and so
3896 * no need to udpate the advertising data here.
3897 */
3898 if (lmp_le_capable(hdev))
3899 update_scan_rsp_data(&req);
3900
3901 err = hci_req_run(&req, set_name_complete);
3902 if (err < 0)
3903 mgmt_pending_remove(cmd);
3904
3905 failed:
3906 hci_dev_unlock(hdev);
3907 return err;
3908 }
3909
3910 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
3911 u16 opcode, struct sk_buff *skb)
3912 {
3913 struct mgmt_rp_read_local_oob_data mgmt_rp;
3914 size_t rp_size = sizeof(mgmt_rp);
3915 struct mgmt_pending_cmd *cmd;
3916
3917 BT_DBG("%s status %u", hdev->name, status);
3918
3919 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev);
3920 if (!cmd)
3921 return;
3922
3923 if (status || !skb) {
3924 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3925 status ? mgmt_status(status) : MGMT_STATUS_FAILED);
3926 goto remove;
3927 }
3928
3929 memset(&mgmt_rp, 0, sizeof(mgmt_rp));
3930
3931 if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
3932 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
3933
3934 if (skb->len < sizeof(*rp)) {
3935 mgmt_cmd_status(cmd->sk, hdev->id,
3936 MGMT_OP_READ_LOCAL_OOB_DATA,
3937 MGMT_STATUS_FAILED);
3938 goto remove;
3939 }
3940
3941 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash));
3942 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand));
3943
3944 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256);
3945 } else {
3946 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
3947
3948 if (skb->len < sizeof(*rp)) {
3949 mgmt_cmd_status(cmd->sk, hdev->id,
3950 MGMT_OP_READ_LOCAL_OOB_DATA,
3951 MGMT_STATUS_FAILED);
3952 goto remove;
3953 }
3954
3955 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192));
3956 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192));
3957
3958 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256));
3959 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256));
3960 }
3961
3962 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3963 MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size);
3964
3965 remove:
3966 mgmt_pending_remove(cmd);
3967 }
3968
3969 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
3970 void *data, u16 data_len)
3971 {
3972 struct mgmt_pending_cmd *cmd;
3973 struct hci_request req;
3974 int err;
3975
3976 BT_DBG("%s", hdev->name);
3977
3978 hci_dev_lock(hdev);
3979
3980 if (!hdev_is_powered(hdev)) {
3981 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3982 MGMT_STATUS_NOT_POWERED);
3983 goto unlock;
3984 }
3985
3986 if (!lmp_ssp_capable(hdev)) {
3987 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3988 MGMT_STATUS_NOT_SUPPORTED);
3989 goto unlock;
3990 }
3991
3992 if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) {
3993 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3994 MGMT_STATUS_BUSY);
3995 goto unlock;
3996 }
3997
3998 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0);
3999 if (!cmd) {
4000 err = -ENOMEM;
4001 goto unlock;
4002 }
4003
4004 hci_req_init(&req, hdev);
4005
4006 if (bredr_sc_enabled(hdev))
4007 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
4008 else
4009 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
4010
4011 err = hci_req_run_skb(&req, read_local_oob_data_complete);
4012 if (err < 0)
4013 mgmt_pending_remove(cmd);
4014
4015 unlock:
4016 hci_dev_unlock(hdev);
4017 return err;
4018 }
4019
4020 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4021 void *data, u16 len)
4022 {
4023 struct mgmt_addr_info *addr = data;
4024 int err;
4025
4026 BT_DBG("%s ", hdev->name);
4027
4028 if (!bdaddr_type_is_valid(addr->type))
4029 return mgmt_cmd_complete(sk, hdev->id,
4030 MGMT_OP_ADD_REMOTE_OOB_DATA,
4031 MGMT_STATUS_INVALID_PARAMS,
4032 addr, sizeof(*addr));
4033
4034 hci_dev_lock(hdev);
4035
4036 if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
4037 struct mgmt_cp_add_remote_oob_data *cp = data;
4038 u8 status;
4039
4040 if (cp->addr.type != BDADDR_BREDR) {
4041 err = mgmt_cmd_complete(sk, hdev->id,
4042 MGMT_OP_ADD_REMOTE_OOB_DATA,
4043 MGMT_STATUS_INVALID_PARAMS,
4044 &cp->addr, sizeof(cp->addr));
4045 goto unlock;
4046 }
4047
4048 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4049 cp->addr.type, cp->hash,
4050 cp->rand, NULL, NULL);
4051 if (err < 0)
4052 status = MGMT_STATUS_FAILED;
4053 else
4054 status = MGMT_STATUS_SUCCESS;
4055
4056 err = mgmt_cmd_complete(sk, hdev->id,
4057 MGMT_OP_ADD_REMOTE_OOB_DATA, status,
4058 &cp->addr, sizeof(cp->addr));
4059 } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
4060 struct mgmt_cp_add_remote_oob_ext_data *cp = data;
4061 u8 *rand192, *hash192, *rand256, *hash256;
4062 u8 status;
4063
4064 if (bdaddr_type_is_le(cp->addr.type)) {
4065 /* Enforce zero-valued 192-bit parameters as
4066 * long as legacy SMP OOB isn't implemented.
4067 */
4068 if (memcmp(cp->rand192, ZERO_KEY, 16) ||
4069 memcmp(cp->hash192, ZERO_KEY, 16)) {
4070 err = mgmt_cmd_complete(sk, hdev->id,
4071 MGMT_OP_ADD_REMOTE_OOB_DATA,
4072 MGMT_STATUS_INVALID_PARAMS,
4073 addr, sizeof(*addr));
4074 goto unlock;
4075 }
4076
4077 rand192 = NULL;
4078 hash192 = NULL;
4079 } else {
4080 /* In case one of the P-192 values is set to zero,
4081 * then just disable OOB data for P-192.
4082 */
4083 if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
4084 !memcmp(cp->hash192, ZERO_KEY, 16)) {
4085 rand192 = NULL;
4086 hash192 = NULL;
4087 } else {
4088 rand192 = cp->rand192;
4089 hash192 = cp->hash192;
4090 }
4091 }
4092
4093 /* In case one of the P-256 values is set to zero, then just
4094 * disable OOB data for P-256.
4095 */
4096 if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
4097 !memcmp(cp->hash256, ZERO_KEY, 16)) {
4098 rand256 = NULL;
4099 hash256 = NULL;
4100 } else {
4101 rand256 = cp->rand256;
4102 hash256 = cp->hash256;
4103 }
4104
4105 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4106 cp->addr.type, hash192, rand192,
4107 hash256, rand256);
4108 if (err < 0)
4109 status = MGMT_STATUS_FAILED;
4110 else
4111 status = MGMT_STATUS_SUCCESS;
4112
4113 err = mgmt_cmd_complete(sk, hdev->id,
4114 MGMT_OP_ADD_REMOTE_OOB_DATA,
4115 status, &cp->addr, sizeof(cp->addr));
4116 } else {
4117 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
4118 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
4119 MGMT_STATUS_INVALID_PARAMS);
4120 }
4121
4122 unlock:
4123 hci_dev_unlock(hdev);
4124 return err;
4125 }
4126
4127 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4128 void *data, u16 len)
4129 {
4130 struct mgmt_cp_remove_remote_oob_data *cp = data;
4131 u8 status;
4132 int err;
4133
4134 BT_DBG("%s", hdev->name);
4135
4136 if (cp->addr.type != BDADDR_BREDR)
4137 return mgmt_cmd_complete(sk, hdev->id,
4138 MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4139 MGMT_STATUS_INVALID_PARAMS,
4140 &cp->addr, sizeof(cp->addr));
4141
4142 hci_dev_lock(hdev);
4143
4144 if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
4145 hci_remote_oob_data_clear(hdev);
4146 status = MGMT_STATUS_SUCCESS;
4147 goto done;
4148 }
4149
4150 err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type);
4151 if (err < 0)
4152 status = MGMT_STATUS_INVALID_PARAMS;
4153 else
4154 status = MGMT_STATUS_SUCCESS;
4155
4156 done:
4157 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4158 status, &cp->addr, sizeof(cp->addr));
4159
4160 hci_dev_unlock(hdev);
4161 return err;
4162 }
4163
4164 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status)
4165 {
4166 struct hci_dev *hdev = req->hdev;
4167 struct hci_cp_inquiry cp;
4168 /* General inquiry access code (GIAC) */
4169 u8 lap[3] = { 0x33, 0x8b, 0x9e };
4170
4171 *status = mgmt_bredr_support(hdev);
4172 if (*status)
4173 return false;
4174
4175 if (hci_dev_test_flag(hdev, HCI_INQUIRY)) {
4176 *status = MGMT_STATUS_BUSY;
4177 return false;
4178 }
4179
4180 hci_inquiry_cache_flush(hdev);
4181
4182 memset(&cp, 0, sizeof(cp));
4183 memcpy(&cp.lap, lap, sizeof(cp.lap));
4184 cp.length = DISCOV_BREDR_INQUIRY_LEN;
4185
4186 hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
4187
4188 return true;
4189 }
4190
4191 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status)
4192 {
4193 struct hci_dev *hdev = req->hdev;
4194 struct hci_cp_le_set_scan_param param_cp;
4195 struct hci_cp_le_set_scan_enable enable_cp;
4196 u8 own_addr_type;
4197 int err;
4198
4199 *status = mgmt_le_support(hdev);
4200 if (*status)
4201 return false;
4202
4203 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) {
4204 /* Don't let discovery abort an outgoing connection attempt
4205 * that's using directed advertising.
4206 */
4207 if (hci_lookup_le_connect(hdev)) {
4208 *status = MGMT_STATUS_REJECTED;
4209 return false;
4210 }
4211
4212 cancel_adv_timeout(hdev);
4213 disable_advertising(req);
4214 }
4215
4216 /* If controller is scanning, it means the background scanning is
4217 * running. Thus, we should temporarily stop it in order to set the
4218 * discovery scanning parameters.
4219 */
4220 if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
4221 hci_req_add_le_scan_disable(req);
4222
4223 /* All active scans will be done with either a resolvable private
4224 * address (when privacy feature has been enabled) or non-resolvable
4225 * private address.
4226 */
4227 err = hci_update_random_address(req, true, &own_addr_type);
4228 if (err < 0) {
4229 *status = MGMT_STATUS_FAILED;
4230 return false;
4231 }
4232
4233 memset(&param_cp, 0, sizeof(param_cp));
4234 param_cp.type = LE_SCAN_ACTIVE;
4235 param_cp.interval = cpu_to_le16(interval);
4236 param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
4237 param_cp.own_address_type = own_addr_type;
4238
4239 hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
4240 &param_cp);
4241
4242 memset(&enable_cp, 0, sizeof(enable_cp));
4243 enable_cp.enable = LE_SCAN_ENABLE;
4244 enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
4245
4246 hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
4247 &enable_cp);
4248
4249 return true;
4250 }
4251
4252 static bool trigger_discovery(struct hci_request *req, u8 *status)
4253 {
4254 struct hci_dev *hdev = req->hdev;
4255
4256 switch (hdev->discovery.type) {
4257 case DISCOV_TYPE_BREDR:
4258 if (!trigger_bredr_inquiry(req, status))
4259 return false;
4260 break;
4261
4262 case DISCOV_TYPE_INTERLEAVED:
4263 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
4264 &hdev->quirks)) {
4265 /* During simultaneous discovery, we double LE scan
4266 * interval. We must leave some time for the controller
4267 * to do BR/EDR inquiry.
4268 */
4269 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2,
4270 status))
4271 return false;
4272
4273 if (!trigger_bredr_inquiry(req, status))
4274 return false;
4275
4276 return true;
4277 }
4278
4279 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4280 *status = MGMT_STATUS_NOT_SUPPORTED;
4281 return false;
4282 }
4283 /* fall through */
4284
4285 case DISCOV_TYPE_LE:
4286 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status))
4287 return false;
4288 break;
4289
4290 default:
4291 *status = MGMT_STATUS_INVALID_PARAMS;
4292 return false;
4293 }
4294
4295 return true;
4296 }
4297
4298 static void start_discovery_complete(struct hci_dev *hdev, u8 status,
4299 u16 opcode)
4300 {
4301 struct mgmt_pending_cmd *cmd;
4302 unsigned long timeout;
4303
4304 BT_DBG("status %d", status);
4305
4306 hci_dev_lock(hdev);
4307
4308 cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev);
4309 if (!cmd)
4310 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev);
4311
4312 if (cmd) {
4313 cmd->cmd_complete(cmd, mgmt_status(status));
4314 mgmt_pending_remove(cmd);
4315 }
4316
4317 if (status) {
4318 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4319 goto unlock;
4320 }
4321
4322 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
4323
4324 /* If the scan involves LE scan, pick proper timeout to schedule
4325 * hdev->le_scan_disable that will stop it.
4326 */
4327 switch (hdev->discovery.type) {
4328 case DISCOV_TYPE_LE:
4329 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4330 break;
4331 case DISCOV_TYPE_INTERLEAVED:
4332 /* When running simultaneous discovery, the LE scanning time
4333 * should occupy the whole discovery time sine BR/EDR inquiry
4334 * and LE scanning are scheduled by the controller.
4335 *
4336 * For interleaving discovery in comparison, BR/EDR inquiry
4337 * and LE scanning are done sequentially with separate
4338 * timeouts.
4339 */
4340 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
4341 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4342 else
4343 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
4344 break;
4345 case DISCOV_TYPE_BREDR:
4346 timeout = 0;
4347 break;
4348 default:
4349 BT_ERR("Invalid discovery type %d", hdev->discovery.type);
4350 timeout = 0;
4351 break;
4352 }
4353
4354 if (timeout) {
4355 /* When service discovery is used and the controller has
4356 * a strict duplicate filter, it is important to remember
4357 * the start and duration of the scan. This is required
4358 * for restarting scanning during the discovery phase.
4359 */
4360 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
4361 &hdev->quirks) &&
4362 hdev->discovery.result_filtering) {
4363 hdev->discovery.scan_start = jiffies;
4364 hdev->discovery.scan_duration = timeout;
4365 }
4366
4367 queue_delayed_work(hdev->workqueue,
4368 &hdev->le_scan_disable, timeout);
4369 }
4370
4371 unlock:
4372 hci_dev_unlock(hdev);
4373 }
4374
4375 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
4376 void *data, u16 len)
4377 {
4378 struct mgmt_cp_start_discovery *cp = data;
4379 struct mgmt_pending_cmd *cmd;
4380 struct hci_request req;
4381 u8 status;
4382 int err;
4383
4384 BT_DBG("%s", hdev->name);
4385
4386 hci_dev_lock(hdev);
4387
4388 if (!hdev_is_powered(hdev)) {
4389 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4390 MGMT_STATUS_NOT_POWERED,
4391 &cp->type, sizeof(cp->type));
4392 goto failed;
4393 }
4394
4395 if (hdev->discovery.state != DISCOVERY_STOPPED ||
4396 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4397 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4398 MGMT_STATUS_BUSY, &cp->type,
4399 sizeof(cp->type));
4400 goto failed;
4401 }
4402
4403 cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len);
4404 if (!cmd) {
4405 err = -ENOMEM;
4406 goto failed;
4407 }
4408
4409 cmd->cmd_complete = generic_cmd_complete;
4410
4411 /* Clear the discovery filter first to free any previously
4412 * allocated memory for the UUID list.
4413 */
4414 hci_discovery_filter_clear(hdev);
4415
4416 hdev->discovery.type = cp->type;
4417 hdev->discovery.report_invalid_rssi = false;
4418
4419 hci_req_init(&req, hdev);
4420
4421 if (!trigger_discovery(&req, &status)) {
4422 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4423 status, &cp->type, sizeof(cp->type));
4424 mgmt_pending_remove(cmd);
4425 goto failed;
4426 }
4427
4428 err = hci_req_run(&req, start_discovery_complete);
4429 if (err < 0) {
4430 mgmt_pending_remove(cmd);
4431 goto failed;
4432 }
4433
4434 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4435
4436 failed:
4437 hci_dev_unlock(hdev);
4438 return err;
4439 }
4440
4441 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd,
4442 u8 status)
4443 {
4444 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
4445 cmd->param, 1);
4446 }
4447
4448 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev,
4449 void *data, u16 len)
4450 {
4451 struct mgmt_cp_start_service_discovery *cp = data;
4452 struct mgmt_pending_cmd *cmd;
4453 struct hci_request req;
4454 const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16);
4455 u16 uuid_count, expected_len;
4456 u8 status;
4457 int err;
4458
4459 BT_DBG("%s", hdev->name);
4460
4461 hci_dev_lock(hdev);
4462
4463 if (!hdev_is_powered(hdev)) {
4464 err = mgmt_cmd_complete(sk, hdev->id,
4465 MGMT_OP_START_SERVICE_DISCOVERY,
4466 MGMT_STATUS_NOT_POWERED,
4467 &cp->type, sizeof(cp->type));
4468 goto failed;
4469 }
4470
4471 if (hdev->discovery.state != DISCOVERY_STOPPED ||
4472 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4473 err = mgmt_cmd_complete(sk, hdev->id,
4474 MGMT_OP_START_SERVICE_DISCOVERY,
4475 MGMT_STATUS_BUSY, &cp->type,
4476 sizeof(cp->type));
4477 goto failed;
4478 }
4479
4480 uuid_count = __le16_to_cpu(cp->uuid_count);
4481 if (uuid_count > max_uuid_count) {
4482 BT_ERR("service_discovery: too big uuid_count value %u",
4483 uuid_count);
4484 err = mgmt_cmd_complete(sk, hdev->id,
4485 MGMT_OP_START_SERVICE_DISCOVERY,
4486 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4487 sizeof(cp->type));
4488 goto failed;
4489 }
4490
4491 expected_len = sizeof(*cp) + uuid_count * 16;
4492 if (expected_len != len) {
4493 BT_ERR("service_discovery: expected %u bytes, got %u bytes",
4494 expected_len, len);
4495 err = mgmt_cmd_complete(sk, hdev->id,
4496 MGMT_OP_START_SERVICE_DISCOVERY,
4497 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4498 sizeof(cp->type));
4499 goto failed;
4500 }
4501
4502 cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY,
4503 hdev, data, len);
4504 if (!cmd) {
4505 err = -ENOMEM;
4506 goto failed;
4507 }
4508
4509 cmd->cmd_complete = service_discovery_cmd_complete;
4510
4511 /* Clear the discovery filter first to free any previously
4512 * allocated memory for the UUID list.
4513 */
4514 hci_discovery_filter_clear(hdev);
4515
4516 hdev->discovery.result_filtering = true;
4517 hdev->discovery.type = cp->type;
4518 hdev->discovery.rssi = cp->rssi;
4519 hdev->discovery.uuid_count = uuid_count;
4520
4521 if (uuid_count > 0) {
4522 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16,
4523 GFP_KERNEL);
4524 if (!hdev->discovery.uuids) {
4525 err = mgmt_cmd_complete(sk, hdev->id,
4526 MGMT_OP_START_SERVICE_DISCOVERY,
4527 MGMT_STATUS_FAILED,
4528 &cp->type, sizeof(cp->type));
4529 mgmt_pending_remove(cmd);
4530 goto failed;
4531 }
4532 }
4533
4534 hci_req_init(&req, hdev);
4535
4536 if (!trigger_discovery(&req, &status)) {
4537 err = mgmt_cmd_complete(sk, hdev->id,
4538 MGMT_OP_START_SERVICE_DISCOVERY,
4539 status, &cp->type, sizeof(cp->type));
4540 mgmt_pending_remove(cmd);
4541 goto failed;
4542 }
4543
4544 err = hci_req_run(&req, start_discovery_complete);
4545 if (err < 0) {
4546 mgmt_pending_remove(cmd);
4547 goto failed;
4548 }
4549
4550 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4551
4552 failed:
4553 hci_dev_unlock(hdev);
4554 return err;
4555 }
4556
4557 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4558 {
4559 struct mgmt_pending_cmd *cmd;
4560
4561 BT_DBG("status %d", status);
4562
4563 hci_dev_lock(hdev);
4564
4565 cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
4566 if (cmd) {
4567 cmd->cmd_complete(cmd, mgmt_status(status));
4568 mgmt_pending_remove(cmd);
4569 }
4570
4571 if (!status)
4572 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4573
4574 hci_dev_unlock(hdev);
4575 }
4576
4577 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
4578 u16 len)
4579 {
4580 struct mgmt_cp_stop_discovery *mgmt_cp = data;
4581 struct mgmt_pending_cmd *cmd;
4582 struct hci_request req;
4583 int err;
4584
4585 BT_DBG("%s", hdev->name);
4586
4587 hci_dev_lock(hdev);
4588
4589 if (!hci_discovery_active(hdev)) {
4590 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4591 MGMT_STATUS_REJECTED, &mgmt_cp->type,
4592 sizeof(mgmt_cp->type));
4593 goto unlock;
4594 }
4595
4596 if (hdev->discovery.type != mgmt_cp->type) {
4597 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4598 MGMT_STATUS_INVALID_PARAMS,
4599 &mgmt_cp->type, sizeof(mgmt_cp->type));
4600 goto unlock;
4601 }
4602
4603 cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len);
4604 if (!cmd) {
4605 err = -ENOMEM;
4606 goto unlock;
4607 }
4608
4609 cmd->cmd_complete = generic_cmd_complete;
4610
4611 hci_req_init(&req, hdev);
4612
4613 hci_stop_discovery(&req);
4614
4615 err = hci_req_run(&req, stop_discovery_complete);
4616 if (!err) {
4617 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
4618 goto unlock;
4619 }
4620
4621 mgmt_pending_remove(cmd);
4622
4623 /* If no HCI commands were sent we're done */
4624 if (err == -ENODATA) {
4625 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0,
4626 &mgmt_cp->type, sizeof(mgmt_cp->type));
4627 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4628 }
4629
4630 unlock:
4631 hci_dev_unlock(hdev);
4632 return err;
4633 }
4634
4635 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
4636 u16 len)
4637 {
4638 struct mgmt_cp_confirm_name *cp = data;
4639 struct inquiry_entry *e;
4640 int err;
4641
4642 BT_DBG("%s", hdev->name);
4643
4644 hci_dev_lock(hdev);
4645
4646 if (!hci_discovery_active(hdev)) {
4647 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4648 MGMT_STATUS_FAILED, &cp->addr,
4649 sizeof(cp->addr));
4650 goto failed;
4651 }
4652
4653 e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
4654 if (!e) {
4655 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4656 MGMT_STATUS_INVALID_PARAMS, &cp->addr,
4657 sizeof(cp->addr));
4658 goto failed;
4659 }
4660
4661 if (cp->name_known) {
4662 e->name_state = NAME_KNOWN;
4663 list_del(&e->list);
4664 } else {
4665 e->name_state = NAME_NEEDED;
4666 hci_inquiry_cache_update_resolve(hdev, e);
4667 }
4668
4669 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0,
4670 &cp->addr, sizeof(cp->addr));
4671
4672 failed:
4673 hci_dev_unlock(hdev);
4674 return err;
4675 }
4676
4677 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
4678 u16 len)
4679 {
4680 struct mgmt_cp_block_device *cp = data;
4681 u8 status;
4682 int err;
4683
4684 BT_DBG("%s", hdev->name);
4685
4686 if (!bdaddr_type_is_valid(cp->addr.type))
4687 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
4688 MGMT_STATUS_INVALID_PARAMS,
4689 &cp->addr, sizeof(cp->addr));
4690
4691 hci_dev_lock(hdev);
4692
4693 err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr,
4694 cp->addr.type);
4695 if (err < 0) {
4696 status = MGMT_STATUS_FAILED;
4697 goto done;
4698 }
4699
4700 mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4701 sk);
4702 status = MGMT_STATUS_SUCCESS;
4703
4704 done:
4705 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status,
4706 &cp->addr, sizeof(cp->addr));
4707
4708 hci_dev_unlock(hdev);
4709
4710 return err;
4711 }
4712
4713 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
4714 u16 len)
4715 {
4716 struct mgmt_cp_unblock_device *cp = data;
4717 u8 status;
4718 int err;
4719
4720 BT_DBG("%s", hdev->name);
4721
4722 if (!bdaddr_type_is_valid(cp->addr.type))
4723 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
4724 MGMT_STATUS_INVALID_PARAMS,
4725 &cp->addr, sizeof(cp->addr));
4726
4727 hci_dev_lock(hdev);
4728
4729 err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr,
4730 cp->addr.type);
4731 if (err < 0) {
4732 status = MGMT_STATUS_INVALID_PARAMS;
4733 goto done;
4734 }
4735
4736 mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4737 sk);
4738 status = MGMT_STATUS_SUCCESS;
4739
4740 done:
4741 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status,
4742 &cp->addr, sizeof(cp->addr));
4743
4744 hci_dev_unlock(hdev);
4745
4746 return err;
4747 }
4748
4749 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data,
4750 u16 len)
4751 {
4752 struct mgmt_cp_set_device_id *cp = data;
4753 struct hci_request req;
4754 int err;
4755 __u16 source;
4756
4757 BT_DBG("%s", hdev->name);
4758
4759 source = __le16_to_cpu(cp->source);
4760
4761 if (source > 0x0002)
4762 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID,
4763 MGMT_STATUS_INVALID_PARAMS);
4764
4765 hci_dev_lock(hdev);
4766
4767 hdev->devid_source = source;
4768 hdev->devid_vendor = __le16_to_cpu(cp->vendor);
4769 hdev->devid_product = __le16_to_cpu(cp->product);
4770 hdev->devid_version = __le16_to_cpu(cp->version);
4771
4772 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0,
4773 NULL, 0);
4774
4775 hci_req_init(&req, hdev);
4776 update_eir(&req);
4777 hci_req_run(&req, NULL);
4778
4779 hci_dev_unlock(hdev);
4780
4781 return err;
4782 }
4783
4784 static void enable_advertising_instance(struct hci_dev *hdev, u8 status,
4785 u16 opcode)
4786 {
4787 BT_DBG("status %d", status);
4788 }
4789
4790 static void set_advertising_complete(struct hci_dev *hdev, u8 status,
4791 u16 opcode)
4792 {
4793 struct cmd_lookup match = { NULL, hdev };
4794 struct hci_request req;
4795 u8 instance;
4796 struct adv_info *adv_instance;
4797 int err;
4798
4799 hci_dev_lock(hdev);
4800
4801 if (status) {
4802 u8 mgmt_err = mgmt_status(status);
4803
4804 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev,
4805 cmd_status_rsp, &mgmt_err);
4806 goto unlock;
4807 }
4808
4809 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
4810 hci_dev_set_flag(hdev, HCI_ADVERTISING);
4811 else
4812 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
4813
4814 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp,
4815 &match);
4816
4817 new_settings(hdev, match.sk);
4818
4819 if (match.sk)
4820 sock_put(match.sk);
4821
4822 /* If "Set Advertising" was just disabled and instance advertising was
4823 * set up earlier, then re-enable multi-instance advertising.
4824 */
4825 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
4826 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) ||
4827 list_empty(&hdev->adv_instances))
4828 goto unlock;
4829
4830 instance = hdev->cur_adv_instance;
4831 if (!instance) {
4832 adv_instance = list_first_entry_or_null(&hdev->adv_instances,
4833 struct adv_info, list);
4834 if (!adv_instance)
4835 goto unlock;
4836
4837 instance = adv_instance->instance;
4838 }
4839
4840 hci_req_init(&req, hdev);
4841
4842 err = schedule_adv_instance(&req, instance, true);
4843
4844 if (!err)
4845 err = hci_req_run(&req, enable_advertising_instance);
4846
4847 if (err)
4848 BT_ERR("Failed to re-configure advertising");
4849
4850 unlock:
4851 hci_dev_unlock(hdev);
4852 }
4853
4854 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
4855 u16 len)
4856 {
4857 struct mgmt_mode *cp = data;
4858 struct mgmt_pending_cmd *cmd;
4859 struct hci_request req;
4860 u8 val, status;
4861 int err;
4862
4863 BT_DBG("request for %s", hdev->name);
4864
4865 status = mgmt_le_support(hdev);
4866 if (status)
4867 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4868 status);
4869
4870 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4871 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4872 MGMT_STATUS_INVALID_PARAMS);
4873
4874 hci_dev_lock(hdev);
4875
4876 val = !!cp->val;
4877
4878 /* The following conditions are ones which mean that we should
4879 * not do any HCI communication but directly send a mgmt
4880 * response to user space (after toggling the flag if
4881 * necessary).
4882 */
4883 if (!hdev_is_powered(hdev) ||
4884 (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
4885 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) ||
4886 hci_conn_num(hdev, LE_LINK) > 0 ||
4887 (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
4888 hdev->le_scan_type == LE_SCAN_ACTIVE)) {
4889 bool changed;
4890
4891 if (cp->val) {
4892 changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING);
4893 if (cp->val == 0x02)
4894 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4895 else
4896 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4897 } else {
4898 changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING);
4899 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4900 }
4901
4902 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev);
4903 if (err < 0)
4904 goto unlock;
4905
4906 if (changed)
4907 err = new_settings(hdev, sk);
4908
4909 goto unlock;
4910 }
4911
4912 if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) ||
4913 pending_find(MGMT_OP_SET_LE, hdev)) {
4914 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4915 MGMT_STATUS_BUSY);
4916 goto unlock;
4917 }
4918
4919 cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len);
4920 if (!cmd) {
4921 err = -ENOMEM;
4922 goto unlock;
4923 }
4924
4925 hci_req_init(&req, hdev);
4926
4927 if (cp->val == 0x02)
4928 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4929 else
4930 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4931
4932 cancel_adv_timeout(hdev);
4933
4934 if (val) {
4935 /* Switch to instance "0" for the Set Advertising setting.
4936 * We cannot use update_[adv|scan_rsp]_data() here as the
4937 * HCI_ADVERTISING flag is not yet set.
4938 */
4939 update_inst_adv_data(&req, 0x00);
4940 update_inst_scan_rsp_data(&req, 0x00);
4941 enable_advertising(&req);
4942 } else {
4943 disable_advertising(&req);
4944 }
4945
4946 err = hci_req_run(&req, set_advertising_complete);
4947 if (err < 0)
4948 mgmt_pending_remove(cmd);
4949
4950 unlock:
4951 hci_dev_unlock(hdev);
4952 return err;
4953 }
4954
4955 static int set_static_address(struct sock *sk, struct hci_dev *hdev,
4956 void *data, u16 len)
4957 {
4958 struct mgmt_cp_set_static_address *cp = data;
4959 int err;
4960
4961 BT_DBG("%s", hdev->name);
4962
4963 if (!lmp_le_capable(hdev))
4964 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4965 MGMT_STATUS_NOT_SUPPORTED);
4966
4967 if (hdev_is_powered(hdev))
4968 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4969 MGMT_STATUS_REJECTED);
4970
4971 if (bacmp(&cp->bdaddr, BDADDR_ANY)) {
4972 if (!bacmp(&cp->bdaddr, BDADDR_NONE))
4973 return mgmt_cmd_status(sk, hdev->id,
4974 MGMT_OP_SET_STATIC_ADDRESS,
4975 MGMT_STATUS_INVALID_PARAMS);
4976
4977 /* Two most significant bits shall be set */
4978 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0)
4979 return mgmt_cmd_status(sk, hdev->id,
4980 MGMT_OP_SET_STATIC_ADDRESS,
4981 MGMT_STATUS_INVALID_PARAMS);
4982 }
4983
4984 hci_dev_lock(hdev);
4985
4986 bacpy(&hdev->static_addr, &cp->bdaddr);
4987
4988 err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev);
4989 if (err < 0)
4990 goto unlock;
4991
4992 err = new_settings(hdev, sk);
4993
4994 unlock:
4995 hci_dev_unlock(hdev);
4996 return err;
4997 }
4998
4999 static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
5000 void *data, u16 len)
5001 {
5002 struct mgmt_cp_set_scan_params *cp = data;
5003 __u16 interval, window;
5004 int err;
5005
5006 BT_DBG("%s", hdev->name);
5007
5008 if (!lmp_le_capable(hdev))
5009 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5010 MGMT_STATUS_NOT_SUPPORTED);
5011
5012 interval = __le16_to_cpu(cp->interval);
5013
5014 if (interval < 0x0004 || interval > 0x4000)
5015 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5016 MGMT_STATUS_INVALID_PARAMS);
5017
5018 window = __le16_to_cpu(cp->window);
5019
5020 if (window < 0x0004 || window > 0x4000)
5021 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5022 MGMT_STATUS_INVALID_PARAMS);
5023
5024 if (window > interval)
5025 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5026 MGMT_STATUS_INVALID_PARAMS);
5027
5028 hci_dev_lock(hdev);
5029
5030 hdev->le_scan_interval = interval;
5031 hdev->le_scan_window = window;
5032
5033 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0,
5034 NULL, 0);
5035
5036 /* If background scan is running, restart it so new parameters are
5037 * loaded.
5038 */
5039 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
5040 hdev->discovery.state == DISCOVERY_STOPPED) {
5041 struct hci_request req;
5042
5043 hci_req_init(&req, hdev);
5044
5045 hci_req_add_le_scan_disable(&req);
5046 hci_req_add_le_passive_scan(&req);
5047
5048 hci_req_run(&req, NULL);
5049 }
5050
5051 hci_dev_unlock(hdev);
5052
5053 return err;
5054 }
5055
5056 static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
5057 u16 opcode)
5058 {
5059 struct mgmt_pending_cmd *cmd;
5060
5061 BT_DBG("status 0x%02x", status);
5062
5063 hci_dev_lock(hdev);
5064
5065 cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5066 if (!cmd)
5067 goto unlock;
5068
5069 if (status) {
5070 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5071 mgmt_status(status));
5072 } else {
5073 struct mgmt_mode *cp = cmd->param;
5074
5075 if (cp->val)
5076 hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE);
5077 else
5078 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5079
5080 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5081 new_settings(hdev, cmd->sk);
5082 }
5083
5084 mgmt_pending_remove(cmd);
5085
5086 unlock:
5087 hci_dev_unlock(hdev);
5088 }
5089
5090 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
5091 void *data, u16 len)
5092 {
5093 struct mgmt_mode *cp = data;
5094 struct mgmt_pending_cmd *cmd;
5095 struct hci_request req;
5096 int err;
5097
5098 BT_DBG("%s", hdev->name);
5099
5100 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
5101 hdev->hci_ver < BLUETOOTH_VER_1_2)
5102 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5103 MGMT_STATUS_NOT_SUPPORTED);
5104
5105 if (cp->val != 0x00 && cp->val != 0x01)
5106 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5107 MGMT_STATUS_INVALID_PARAMS);
5108
5109 hci_dev_lock(hdev);
5110
5111 if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
5112 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5113 MGMT_STATUS_BUSY);
5114 goto unlock;
5115 }
5116
5117 if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) {
5118 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5119 hdev);
5120 goto unlock;
5121 }
5122
5123 if (!hdev_is_powered(hdev)) {
5124 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE);
5125 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5126 hdev);
5127 new_settings(hdev, sk);
5128 goto unlock;
5129 }
5130
5131 cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
5132 data, len);
5133 if (!cmd) {
5134 err = -ENOMEM;
5135 goto unlock;
5136 }
5137
5138 hci_req_init(&req, hdev);
5139
5140 write_fast_connectable(&req, cp->val);
5141
5142 err = hci_req_run(&req, fast_connectable_complete);
5143 if (err < 0) {
5144 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5145 MGMT_STATUS_FAILED);
5146 mgmt_pending_remove(cmd);
5147 }
5148
5149 unlock:
5150 hci_dev_unlock(hdev);
5151
5152 return err;
5153 }
5154
5155 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5156 {
5157 struct mgmt_pending_cmd *cmd;
5158
5159 BT_DBG("status 0x%02x", status);
5160
5161 hci_dev_lock(hdev);
5162
5163 cmd = pending_find(MGMT_OP_SET_BREDR, hdev);
5164 if (!cmd)
5165 goto unlock;
5166
5167 if (status) {
5168 u8 mgmt_err = mgmt_status(status);
5169
5170 /* We need to restore the flag if related HCI commands
5171 * failed.
5172 */
5173 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
5174
5175 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
5176 } else {
5177 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev);
5178 new_settings(hdev, cmd->sk);
5179 }
5180
5181 mgmt_pending_remove(cmd);
5182
5183 unlock:
5184 hci_dev_unlock(hdev);
5185 }
5186
5187 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
5188 {
5189 struct mgmt_mode *cp = data;
5190 struct mgmt_pending_cmd *cmd;
5191 struct hci_request req;
5192 int err;
5193
5194 BT_DBG("request for %s", hdev->name);
5195
5196 if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev))
5197 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5198 MGMT_STATUS_NOT_SUPPORTED);
5199
5200 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5201 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5202 MGMT_STATUS_REJECTED);
5203
5204 if (cp->val != 0x00 && cp->val != 0x01)
5205 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5206 MGMT_STATUS_INVALID_PARAMS);
5207
5208 hci_dev_lock(hdev);
5209
5210 if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5211 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5212 goto unlock;
5213 }
5214
5215 if (!hdev_is_powered(hdev)) {
5216 if (!cp->val) {
5217 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
5218 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
5219 hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
5220 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5221 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
5222 }
5223
5224 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED);
5225
5226 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5227 if (err < 0)
5228 goto unlock;
5229
5230 err = new_settings(hdev, sk);
5231 goto unlock;
5232 }
5233
5234 /* Reject disabling when powered on */
5235 if (!cp->val) {
5236 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5237 MGMT_STATUS_REJECTED);
5238 goto unlock;
5239 } else {
5240 /* When configuring a dual-mode controller to operate
5241 * with LE only and using a static address, then switching
5242 * BR/EDR back on is not allowed.
5243 *
5244 * Dual-mode controllers shall operate with the public
5245 * address as its identity address for BR/EDR and LE. So
5246 * reject the attempt to create an invalid configuration.
5247 *
5248 * The same restrictions applies when secure connections
5249 * has been enabled. For BR/EDR this is a controller feature
5250 * while for LE it is a host stack feature. This means that
5251 * switching BR/EDR back on when secure connections has been
5252 * enabled is not a supported transaction.
5253 */
5254 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5255 (bacmp(&hdev->static_addr, BDADDR_ANY) ||
5256 hci_dev_test_flag(hdev, HCI_SC_ENABLED))) {
5257 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5258 MGMT_STATUS_REJECTED);
5259 goto unlock;
5260 }
5261 }
5262
5263 if (pending_find(MGMT_OP_SET_BREDR, hdev)) {
5264 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5265 MGMT_STATUS_BUSY);
5266 goto unlock;
5267 }
5268
5269 cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
5270 if (!cmd) {
5271 err = -ENOMEM;
5272 goto unlock;
5273 }
5274
5275 /* We need to flip the bit already here so that update_adv_data
5276 * generates the correct flags.
5277 */
5278 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
5279
5280 hci_req_init(&req, hdev);
5281
5282 write_fast_connectable(&req, false);
5283 __hci_update_page_scan(&req);
5284
5285 /* Since only the advertising data flags will change, there
5286 * is no need to update the scan response data.
5287 */
5288 update_adv_data(&req);
5289
5290 err = hci_req_run(&req, set_bredr_complete);
5291 if (err < 0)
5292 mgmt_pending_remove(cmd);
5293
5294 unlock:
5295 hci_dev_unlock(hdev);
5296 return err;
5297 }
5298
5299 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5300 {
5301 struct mgmt_pending_cmd *cmd;
5302 struct mgmt_mode *cp;
5303
5304 BT_DBG("%s status %u", hdev->name, status);
5305
5306 hci_dev_lock(hdev);
5307
5308 cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
5309 if (!cmd)
5310 goto unlock;
5311
5312 if (status) {
5313 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
5314 mgmt_status(status));
5315 goto remove;
5316 }
5317
5318 cp = cmd->param;
5319
5320 switch (cp->val) {
5321 case 0x00:
5322 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
5323 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5324 break;
5325 case 0x01:
5326 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5327 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5328 break;
5329 case 0x02:
5330 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5331 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5332 break;
5333 }
5334
5335 send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
5336 new_settings(hdev, cmd->sk);
5337
5338 remove:
5339 mgmt_pending_remove(cmd);
5340 unlock:
5341 hci_dev_unlock(hdev);
5342 }
5343
5344 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
5345 void *data, u16 len)
5346 {
5347 struct mgmt_mode *cp = data;
5348 struct mgmt_pending_cmd *cmd;
5349 struct hci_request req;
5350 u8 val;
5351 int err;
5352
5353 BT_DBG("request for %s", hdev->name);
5354
5355 if (!lmp_sc_capable(hdev) &&
5356 !hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5357 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5358 MGMT_STATUS_NOT_SUPPORTED);
5359
5360 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5361 lmp_sc_capable(hdev) &&
5362 !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5363 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5364 MGMT_STATUS_REJECTED);
5365
5366 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5367 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5368 MGMT_STATUS_INVALID_PARAMS);
5369
5370 hci_dev_lock(hdev);
5371
5372 if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) ||
5373 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5374 bool changed;
5375
5376 if (cp->val) {
5377 changed = !hci_dev_test_and_set_flag(hdev,
5378 HCI_SC_ENABLED);
5379 if (cp->val == 0x02)
5380 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5381 else
5382 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5383 } else {
5384 changed = hci_dev_test_and_clear_flag(hdev,
5385 HCI_SC_ENABLED);
5386 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5387 }
5388
5389 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5390 if (err < 0)
5391 goto failed;
5392
5393 if (changed)
5394 err = new_settings(hdev, sk);
5395
5396 goto failed;
5397 }
5398
5399 if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
5400 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5401 MGMT_STATUS_BUSY);
5402 goto failed;
5403 }
5404
5405 val = !!cp->val;
5406
5407 if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
5408 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5409 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5410 goto failed;
5411 }
5412
5413 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
5414 if (!cmd) {
5415 err = -ENOMEM;
5416 goto failed;
5417 }
5418
5419 hci_req_init(&req, hdev);
5420 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
5421 err = hci_req_run(&req, sc_enable_complete);
5422 if (err < 0) {
5423 mgmt_pending_remove(cmd);
5424 goto failed;
5425 }
5426
5427 failed:
5428 hci_dev_unlock(hdev);
5429 return err;
5430 }
5431
5432 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
5433 void *data, u16 len)
5434 {
5435 struct mgmt_mode *cp = data;
5436 bool changed, use_changed;
5437 int err;
5438
5439 BT_DBG("request for %s", hdev->name);
5440
5441 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5442 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
5443 MGMT_STATUS_INVALID_PARAMS);
5444
5445 hci_dev_lock(hdev);
5446
5447 if (cp->val)
5448 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
5449 else
5450 changed = hci_dev_test_and_clear_flag(hdev,
5451 HCI_KEEP_DEBUG_KEYS);
5452
5453 if (cp->val == 0x02)
5454 use_changed = !hci_dev_test_and_set_flag(hdev,
5455 HCI_USE_DEBUG_KEYS);
5456 else
5457 use_changed = hci_dev_test_and_clear_flag(hdev,
5458 HCI_USE_DEBUG_KEYS);
5459
5460 if (hdev_is_powered(hdev) && use_changed &&
5461 hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
5462 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
5463 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
5464 sizeof(mode), &mode);
5465 }
5466
5467 err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
5468 if (err < 0)
5469 goto unlock;
5470
5471 if (changed)
5472 err = new_settings(hdev, sk);
5473
5474 unlock:
5475 hci_dev_unlock(hdev);
5476 return err;
5477 }
5478
5479 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5480 u16 len)
5481 {
5482 struct mgmt_cp_set_privacy *cp = cp_data;
5483 bool changed;
5484 int err;
5485
5486 BT_DBG("request for %s", hdev->name);
5487
5488 if (!lmp_le_capable(hdev))
5489 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5490 MGMT_STATUS_NOT_SUPPORTED);
5491
5492 if (cp->privacy != 0x00 && cp->privacy != 0x01)
5493 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5494 MGMT_STATUS_INVALID_PARAMS);
5495
5496 if (hdev_is_powered(hdev))
5497 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5498 MGMT_STATUS_REJECTED);
5499
5500 hci_dev_lock(hdev);
5501
5502 /* If user space supports this command it is also expected to
5503 * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
5504 */
5505 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5506
5507 if (cp->privacy) {
5508 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY);
5509 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
5510 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
5511 } else {
5512 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY);
5513 memset(hdev->irk, 0, sizeof(hdev->irk));
5514 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
5515 }
5516
5517 err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
5518 if (err < 0)
5519 goto unlock;
5520
5521 if (changed)
5522 err = new_settings(hdev, sk);
5523
5524 unlock:
5525 hci_dev_unlock(hdev);
5526 return err;
5527 }
5528
5529 static bool irk_is_valid(struct mgmt_irk_info *irk)
5530 {
5531 switch (irk->addr.type) {
5532 case BDADDR_LE_PUBLIC:
5533 return true;
5534
5535 case BDADDR_LE_RANDOM:
5536 /* Two most significant bits shall be set */
5537 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5538 return false;
5539 return true;
5540 }
5541
5542 return false;
5543 }
5544
5545 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5546 u16 len)
5547 {
5548 struct mgmt_cp_load_irks *cp = cp_data;
5549 const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) /
5550 sizeof(struct mgmt_irk_info));
5551 u16 irk_count, expected_len;
5552 int i, err;
5553
5554 BT_DBG("request for %s", hdev->name);
5555
5556 if (!lmp_le_capable(hdev))
5557 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5558 MGMT_STATUS_NOT_SUPPORTED);
5559
5560 irk_count = __le16_to_cpu(cp->irk_count);
5561 if (irk_count > max_irk_count) {
5562 BT_ERR("load_irks: too big irk_count value %u", irk_count);
5563 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5564 MGMT_STATUS_INVALID_PARAMS);
5565 }
5566
5567 expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
5568 if (expected_len != len) {
5569 BT_ERR("load_irks: expected %u bytes, got %u bytes",
5570 expected_len, len);
5571 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5572 MGMT_STATUS_INVALID_PARAMS);
5573 }
5574
5575 BT_DBG("%s irk_count %u", hdev->name, irk_count);
5576
5577 for (i = 0; i < irk_count; i++) {
5578 struct mgmt_irk_info *key = &cp->irks[i];
5579
5580 if (!irk_is_valid(key))
5581 return mgmt_cmd_status(sk, hdev->id,
5582 MGMT_OP_LOAD_IRKS,
5583 MGMT_STATUS_INVALID_PARAMS);
5584 }
5585
5586 hci_dev_lock(hdev);
5587
5588 hci_smp_irks_clear(hdev);
5589
5590 for (i = 0; i < irk_count; i++) {
5591 struct mgmt_irk_info *irk = &cp->irks[i];
5592
5593 hci_add_irk(hdev, &irk->addr.bdaddr,
5594 le_addr_type(irk->addr.type), irk->val,
5595 BDADDR_ANY);
5596 }
5597
5598 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5599
5600 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
5601
5602 hci_dev_unlock(hdev);
5603
5604 return err;
5605 }
5606
5607 static bool ltk_is_valid(struct mgmt_ltk_info *key)
5608 {
5609 if (key->master != 0x00 && key->master != 0x01)
5610 return false;
5611
5612 switch (key->addr.type) {
5613 case BDADDR_LE_PUBLIC:
5614 return true;
5615
5616 case BDADDR_LE_RANDOM:
5617 /* Two most significant bits shall be set */
5618 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5619 return false;
5620 return true;
5621 }
5622
5623 return false;
5624 }
5625
5626 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
5627 void *cp_data, u16 len)
5628 {
5629 struct mgmt_cp_load_long_term_keys *cp = cp_data;
5630 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
5631 sizeof(struct mgmt_ltk_info));
5632 u16 key_count, expected_len;
5633 int i, err;
5634
5635 BT_DBG("request for %s", hdev->name);
5636
5637 if (!lmp_le_capable(hdev))
5638 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5639 MGMT_STATUS_NOT_SUPPORTED);
5640
5641 key_count = __le16_to_cpu(cp->key_count);
5642 if (key_count > max_key_count) {
5643 BT_ERR("load_ltks: too big key_count value %u", key_count);
5644 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5645 MGMT_STATUS_INVALID_PARAMS);
5646 }
5647
5648 expected_len = sizeof(*cp) + key_count *
5649 sizeof(struct mgmt_ltk_info);
5650 if (expected_len != len) {
5651 BT_ERR("load_keys: expected %u bytes, got %u bytes",
5652 expected_len, len);
5653 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5654 MGMT_STATUS_INVALID_PARAMS);
5655 }
5656
5657 BT_DBG("%s key_count %u", hdev->name, key_count);
5658
5659 for (i = 0; i < key_count; i++) {
5660 struct mgmt_ltk_info *key = &cp->keys[i];
5661
5662 if (!ltk_is_valid(key))
5663 return mgmt_cmd_status(sk, hdev->id,
5664 MGMT_OP_LOAD_LONG_TERM_KEYS,
5665 MGMT_STATUS_INVALID_PARAMS);
5666 }
5667
5668 hci_dev_lock(hdev);
5669
5670 hci_smp_ltks_clear(hdev);
5671
5672 for (i = 0; i < key_count; i++) {
5673 struct mgmt_ltk_info *key = &cp->keys[i];
5674 u8 type, authenticated;
5675
5676 switch (key->type) {
5677 case MGMT_LTK_UNAUTHENTICATED:
5678 authenticated = 0x00;
5679 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5680 break;
5681 case MGMT_LTK_AUTHENTICATED:
5682 authenticated = 0x01;
5683 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5684 break;
5685 case MGMT_LTK_P256_UNAUTH:
5686 authenticated = 0x00;
5687 type = SMP_LTK_P256;
5688 break;
5689 case MGMT_LTK_P256_AUTH:
5690 authenticated = 0x01;
5691 type = SMP_LTK_P256;
5692 break;
5693 case MGMT_LTK_P256_DEBUG:
5694 authenticated = 0x00;
5695 type = SMP_LTK_P256_DEBUG;
5696 default:
5697 continue;
5698 }
5699
5700 hci_add_ltk(hdev, &key->addr.bdaddr,
5701 le_addr_type(key->addr.type), type, authenticated,
5702 key->val, key->enc_size, key->ediv, key->rand);
5703 }
5704
5705 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
5706 NULL, 0);
5707
5708 hci_dev_unlock(hdev);
5709
5710 return err;
5711 }
5712
5713 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5714 {
5715 struct hci_conn *conn = cmd->user_data;
5716 struct mgmt_rp_get_conn_info rp;
5717 int err;
5718
5719 memcpy(&rp.addr, cmd->param, sizeof(rp.addr));
5720
5721 if (status == MGMT_STATUS_SUCCESS) {
5722 rp.rssi = conn->rssi;
5723 rp.tx_power = conn->tx_power;
5724 rp.max_tx_power = conn->max_tx_power;
5725 } else {
5726 rp.rssi = HCI_RSSI_INVALID;
5727 rp.tx_power = HCI_TX_POWER_INVALID;
5728 rp.max_tx_power = HCI_TX_POWER_INVALID;
5729 }
5730
5731 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO,
5732 status, &rp, sizeof(rp));
5733
5734 hci_conn_drop(conn);
5735 hci_conn_put(conn);
5736
5737 return err;
5738 }
5739
5740 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status,
5741 u16 opcode)
5742 {
5743 struct hci_cp_read_rssi *cp;
5744 struct mgmt_pending_cmd *cmd;
5745 struct hci_conn *conn;
5746 u16 handle;
5747 u8 status;
5748
5749 BT_DBG("status 0x%02x", hci_status);
5750
5751 hci_dev_lock(hdev);
5752
5753 /* Commands sent in request are either Read RSSI or Read Transmit Power
5754 * Level so we check which one was last sent to retrieve connection
5755 * handle. Both commands have handle as first parameter so it's safe to
5756 * cast data on the same command struct.
5757 *
5758 * First command sent is always Read RSSI and we fail only if it fails.
5759 * In other case we simply override error to indicate success as we
5760 * already remembered if TX power value is actually valid.
5761 */
5762 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI);
5763 if (!cp) {
5764 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
5765 status = MGMT_STATUS_SUCCESS;
5766 } else {
5767 status = mgmt_status(hci_status);
5768 }
5769
5770 if (!cp) {
5771 BT_ERR("invalid sent_cmd in conn_info response");
5772 goto unlock;
5773 }
5774
5775 handle = __le16_to_cpu(cp->handle);
5776 conn = hci_conn_hash_lookup_handle(hdev, handle);
5777 if (!conn) {
5778 BT_ERR("unknown handle (%d) in conn_info response", handle);
5779 goto unlock;
5780 }
5781
5782 cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn);
5783 if (!cmd)
5784 goto unlock;
5785
5786 cmd->cmd_complete(cmd, status);
5787 mgmt_pending_remove(cmd);
5788
5789 unlock:
5790 hci_dev_unlock(hdev);
5791 }
5792
5793 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
5794 u16 len)
5795 {
5796 struct mgmt_cp_get_conn_info *cp = data;
5797 struct mgmt_rp_get_conn_info rp;
5798 struct hci_conn *conn;
5799 unsigned long conn_info_age;
5800 int err = 0;
5801
5802 BT_DBG("%s", hdev->name);
5803
5804 memset(&rp, 0, sizeof(rp));
5805 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5806 rp.addr.type = cp->addr.type;
5807
5808 if (!bdaddr_type_is_valid(cp->addr.type))
5809 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5810 MGMT_STATUS_INVALID_PARAMS,
5811 &rp, sizeof(rp));
5812
5813 hci_dev_lock(hdev);
5814
5815 if (!hdev_is_powered(hdev)) {
5816 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5817 MGMT_STATUS_NOT_POWERED, &rp,
5818 sizeof(rp));
5819 goto unlock;
5820 }
5821
5822 if (cp->addr.type == BDADDR_BREDR)
5823 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5824 &cp->addr.bdaddr);
5825 else
5826 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
5827
5828 if (!conn || conn->state != BT_CONNECTED) {
5829 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5830 MGMT_STATUS_NOT_CONNECTED, &rp,
5831 sizeof(rp));
5832 goto unlock;
5833 }
5834
5835 if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) {
5836 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5837 MGMT_STATUS_BUSY, &rp, sizeof(rp));
5838 goto unlock;
5839 }
5840
5841 /* To avoid client trying to guess when to poll again for information we
5842 * calculate conn info age as random value between min/max set in hdev.
5843 */
5844 conn_info_age = hdev->conn_info_min_age +
5845 prandom_u32_max(hdev->conn_info_max_age -
5846 hdev->conn_info_min_age);
5847
5848 /* Query controller to refresh cached values if they are too old or were
5849 * never read.
5850 */
5851 if (time_after(jiffies, conn->conn_info_timestamp +
5852 msecs_to_jiffies(conn_info_age)) ||
5853 !conn->conn_info_timestamp) {
5854 struct hci_request req;
5855 struct hci_cp_read_tx_power req_txp_cp;
5856 struct hci_cp_read_rssi req_rssi_cp;
5857 struct mgmt_pending_cmd *cmd;
5858
5859 hci_req_init(&req, hdev);
5860 req_rssi_cp.handle = cpu_to_le16(conn->handle);
5861 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp),
5862 &req_rssi_cp);
5863
5864 /* For LE links TX power does not change thus we don't need to
5865 * query for it once value is known.
5866 */
5867 if (!bdaddr_type_is_le(cp->addr.type) ||
5868 conn->tx_power == HCI_TX_POWER_INVALID) {
5869 req_txp_cp.handle = cpu_to_le16(conn->handle);
5870 req_txp_cp.type = 0x00;
5871 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5872 sizeof(req_txp_cp), &req_txp_cp);
5873 }
5874
5875 /* Max TX power needs to be read only once per connection */
5876 if (conn->max_tx_power == HCI_TX_POWER_INVALID) {
5877 req_txp_cp.handle = cpu_to_le16(conn->handle);
5878 req_txp_cp.type = 0x01;
5879 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5880 sizeof(req_txp_cp), &req_txp_cp);
5881 }
5882
5883 err = hci_req_run(&req, conn_info_refresh_complete);
5884 if (err < 0)
5885 goto unlock;
5886
5887 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev,
5888 data, len);
5889 if (!cmd) {
5890 err = -ENOMEM;
5891 goto unlock;
5892 }
5893
5894 hci_conn_hold(conn);
5895 cmd->user_data = hci_conn_get(conn);
5896 cmd->cmd_complete = conn_info_cmd_complete;
5897
5898 conn->conn_info_timestamp = jiffies;
5899 } else {
5900 /* Cache is valid, just reply with values cached in hci_conn */
5901 rp.rssi = conn->rssi;
5902 rp.tx_power = conn->tx_power;
5903 rp.max_tx_power = conn->max_tx_power;
5904
5905 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5906 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
5907 }
5908
5909 unlock:
5910 hci_dev_unlock(hdev);
5911 return err;
5912 }
5913
5914 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5915 {
5916 struct hci_conn *conn = cmd->user_data;
5917 struct mgmt_rp_get_clock_info rp;
5918 struct hci_dev *hdev;
5919 int err;
5920
5921 memset(&rp, 0, sizeof(rp));
5922 memcpy(&rp.addr, &cmd->param, sizeof(rp.addr));
5923
5924 if (status)
5925 goto complete;
5926
5927 hdev = hci_dev_get(cmd->index);
5928 if (hdev) {
5929 rp.local_clock = cpu_to_le32(hdev->clock);
5930 hci_dev_put(hdev);
5931 }
5932
5933 if (conn) {
5934 rp.piconet_clock = cpu_to_le32(conn->clock);
5935 rp.accuracy = cpu_to_le16(conn->clock_accuracy);
5936 }
5937
5938 complete:
5939 err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp,
5940 sizeof(rp));
5941
5942 if (conn) {
5943 hci_conn_drop(conn);
5944 hci_conn_put(conn);
5945 }
5946
5947 return err;
5948 }
5949
5950 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5951 {
5952 struct hci_cp_read_clock *hci_cp;
5953 struct mgmt_pending_cmd *cmd;
5954 struct hci_conn *conn;
5955
5956 BT_DBG("%s status %u", hdev->name, status);
5957
5958 hci_dev_lock(hdev);
5959
5960 hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
5961 if (!hci_cp)
5962 goto unlock;
5963
5964 if (hci_cp->which) {
5965 u16 handle = __le16_to_cpu(hci_cp->handle);
5966 conn = hci_conn_hash_lookup_handle(hdev, handle);
5967 } else {
5968 conn = NULL;
5969 }
5970
5971 cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn);
5972 if (!cmd)
5973 goto unlock;
5974
5975 cmd->cmd_complete(cmd, mgmt_status(status));
5976 mgmt_pending_remove(cmd);
5977
5978 unlock:
5979 hci_dev_unlock(hdev);
5980 }
5981
5982 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data,
5983 u16 len)
5984 {
5985 struct mgmt_cp_get_clock_info *cp = data;
5986 struct mgmt_rp_get_clock_info rp;
5987 struct hci_cp_read_clock hci_cp;
5988 struct mgmt_pending_cmd *cmd;
5989 struct hci_request req;
5990 struct hci_conn *conn;
5991 int err;
5992
5993 BT_DBG("%s", hdev->name);
5994
5995 memset(&rp, 0, sizeof(rp));
5996 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5997 rp.addr.type = cp->addr.type;
5998
5999 if (cp->addr.type != BDADDR_BREDR)
6000 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6001 MGMT_STATUS_INVALID_PARAMS,
6002 &rp, sizeof(rp));
6003
6004 hci_dev_lock(hdev);
6005
6006 if (!hdev_is_powered(hdev)) {
6007 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6008 MGMT_STATUS_NOT_POWERED, &rp,
6009 sizeof(rp));
6010 goto unlock;
6011 }
6012
6013 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6014 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
6015 &cp->addr.bdaddr);
6016 if (!conn || conn->state != BT_CONNECTED) {
6017 err = mgmt_cmd_complete(sk, hdev->id,
6018 MGMT_OP_GET_CLOCK_INFO,
6019 MGMT_STATUS_NOT_CONNECTED,
6020 &rp, sizeof(rp));
6021 goto unlock;
6022 }
6023 } else {
6024 conn = NULL;
6025 }
6026
6027 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len);
6028 if (!cmd) {
6029 err = -ENOMEM;
6030 goto unlock;
6031 }
6032
6033 cmd->cmd_complete = clock_info_cmd_complete;
6034
6035 hci_req_init(&req, hdev);
6036
6037 memset(&hci_cp, 0, sizeof(hci_cp));
6038 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6039
6040 if (conn) {
6041 hci_conn_hold(conn);
6042 cmd->user_data = hci_conn_get(conn);
6043
6044 hci_cp.handle = cpu_to_le16(conn->handle);
6045 hci_cp.which = 0x01; /* Piconet clock */
6046 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6047 }
6048
6049 err = hci_req_run(&req, get_clock_info_complete);
6050 if (err < 0)
6051 mgmt_pending_remove(cmd);
6052
6053 unlock:
6054 hci_dev_unlock(hdev);
6055 return err;
6056 }
6057
6058 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
6059 {
6060 struct hci_conn *conn;
6061
6062 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
6063 if (!conn)
6064 return false;
6065
6066 if (conn->dst_type != type)
6067 return false;
6068
6069 if (conn->state != BT_CONNECTED)
6070 return false;
6071
6072 return true;
6073 }
6074
6075 /* This function requires the caller holds hdev->lock */
6076 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
6077 u8 addr_type, u8 auto_connect)
6078 {
6079 struct hci_dev *hdev = req->hdev;
6080 struct hci_conn_params *params;
6081
6082 params = hci_conn_params_add(hdev, addr, addr_type);
6083 if (!params)
6084 return -EIO;
6085
6086 if (params->auto_connect == auto_connect)
6087 return 0;
6088
6089 list_del_init(&params->action);
6090
6091 switch (auto_connect) {
6092 case HCI_AUTO_CONN_DISABLED:
6093 case HCI_AUTO_CONN_LINK_LOSS:
6094 /* If auto connect is being disabled when we're trying to
6095 * connect to device, keep connecting.
6096 */
6097 if (params->explicit_connect)
6098 list_add(&params->action, &hdev->pend_le_conns);
6099
6100 __hci_update_background_scan(req);
6101 break;
6102 case HCI_AUTO_CONN_REPORT:
6103 if (params->explicit_connect)
6104 list_add(&params->action, &hdev->pend_le_conns);
6105 else
6106 list_add(&params->action, &hdev->pend_le_reports);
6107 __hci_update_background_scan(req);
6108 break;
6109 case HCI_AUTO_CONN_DIRECT:
6110 case HCI_AUTO_CONN_ALWAYS:
6111 if (!is_connected(hdev, addr, addr_type)) {
6112 list_add(&params->action, &hdev->pend_le_conns);
6113 /* If we are in scan phase of connecting, we were
6114 * already added to pend_le_conns and scanning.
6115 */
6116 if (params->auto_connect != HCI_AUTO_CONN_EXPLICIT)
6117 __hci_update_background_scan(req);
6118 }
6119 break;
6120 }
6121
6122 params->auto_connect = auto_connect;
6123
6124 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
6125 auto_connect);
6126
6127 return 0;
6128 }
6129
6130 static void device_added(struct sock *sk, struct hci_dev *hdev,
6131 bdaddr_t *bdaddr, u8 type, u8 action)
6132 {
6133 struct mgmt_ev_device_added ev;
6134
6135 bacpy(&ev.addr.bdaddr, bdaddr);
6136 ev.addr.type = type;
6137 ev.action = action;
6138
6139 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
6140 }
6141
6142 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6143 {
6144 struct mgmt_pending_cmd *cmd;
6145
6146 BT_DBG("status 0x%02x", status);
6147
6148 hci_dev_lock(hdev);
6149
6150 cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev);
6151 if (!cmd)
6152 goto unlock;
6153
6154 cmd->cmd_complete(cmd, mgmt_status(status));
6155 mgmt_pending_remove(cmd);
6156
6157 unlock:
6158 hci_dev_unlock(hdev);
6159 }
6160
6161 static int add_device(struct sock *sk, struct hci_dev *hdev,
6162 void *data, u16 len)
6163 {
6164 struct mgmt_cp_add_device *cp = data;
6165 struct mgmt_pending_cmd *cmd;
6166 struct hci_request req;
6167 u8 auto_conn, addr_type;
6168 int err;
6169
6170 BT_DBG("%s", hdev->name);
6171
6172 if (!bdaddr_type_is_valid(cp->addr.type) ||
6173 !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
6174 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6175 MGMT_STATUS_INVALID_PARAMS,
6176 &cp->addr, sizeof(cp->addr));
6177
6178 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
6179 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6180 MGMT_STATUS_INVALID_PARAMS,
6181 &cp->addr, sizeof(cp->addr));
6182
6183 hci_req_init(&req, hdev);
6184
6185 hci_dev_lock(hdev);
6186
6187 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
6188 if (!cmd) {
6189 err = -ENOMEM;
6190 goto unlock;
6191 }
6192
6193 cmd->cmd_complete = addr_cmd_complete;
6194
6195 if (cp->addr.type == BDADDR_BREDR) {
6196 /* Only incoming connections action is supported for now */
6197 if (cp->action != 0x01) {
6198 err = cmd->cmd_complete(cmd,
6199 MGMT_STATUS_INVALID_PARAMS);
6200 mgmt_pending_remove(cmd);
6201 goto unlock;
6202 }
6203
6204 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
6205 cp->addr.type);
6206 if (err)
6207 goto unlock;
6208
6209 __hci_update_page_scan(&req);
6210
6211 goto added;
6212 }
6213
6214 addr_type = le_addr_type(cp->addr.type);
6215
6216 if (cp->action == 0x02)
6217 auto_conn = HCI_AUTO_CONN_ALWAYS;
6218 else if (cp->action == 0x01)
6219 auto_conn = HCI_AUTO_CONN_DIRECT;
6220 else
6221 auto_conn = HCI_AUTO_CONN_REPORT;
6222
6223 /* Kernel internally uses conn_params with resolvable private
6224 * address, but Add Device allows only identity addresses.
6225 * Make sure it is enforced before calling
6226 * hci_conn_params_lookup.
6227 */
6228 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6229 err = cmd->cmd_complete(cmd, MGMT_STATUS_INVALID_PARAMS);
6230 mgmt_pending_remove(cmd);
6231 goto unlock;
6232 }
6233
6234 /* If the connection parameters don't exist for this device,
6235 * they will be created and configured with defaults.
6236 */
6237 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
6238 auto_conn) < 0) {
6239 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
6240 mgmt_pending_remove(cmd);
6241 goto unlock;
6242 }
6243
6244 added:
6245 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
6246
6247 err = hci_req_run(&req, add_device_complete);
6248 if (err < 0) {
6249 /* ENODATA means no HCI commands were needed (e.g. if
6250 * the adapter is powered off).
6251 */
6252 if (err == -ENODATA)
6253 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6254 mgmt_pending_remove(cmd);
6255 }
6256
6257 unlock:
6258 hci_dev_unlock(hdev);
6259 return err;
6260 }
6261
6262 static void device_removed(struct sock *sk, struct hci_dev *hdev,
6263 bdaddr_t *bdaddr, u8 type)
6264 {
6265 struct mgmt_ev_device_removed ev;
6266
6267 bacpy(&ev.addr.bdaddr, bdaddr);
6268 ev.addr.type = type;
6269
6270 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
6271 }
6272
6273 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6274 {
6275 struct mgmt_pending_cmd *cmd;
6276
6277 BT_DBG("status 0x%02x", status);
6278
6279 hci_dev_lock(hdev);
6280
6281 cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
6282 if (!cmd)
6283 goto unlock;
6284
6285 cmd->cmd_complete(cmd, mgmt_status(status));
6286 mgmt_pending_remove(cmd);
6287
6288 unlock:
6289 hci_dev_unlock(hdev);
6290 }
6291
6292 static int remove_device(struct sock *sk, struct hci_dev *hdev,
6293 void *data, u16 len)
6294 {
6295 struct mgmt_cp_remove_device *cp = data;
6296 struct mgmt_pending_cmd *cmd;
6297 struct hci_request req;
6298 int err;
6299
6300 BT_DBG("%s", hdev->name);
6301
6302 hci_req_init(&req, hdev);
6303
6304 hci_dev_lock(hdev);
6305
6306 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
6307 if (!cmd) {
6308 err = -ENOMEM;
6309 goto unlock;
6310 }
6311
6312 cmd->cmd_complete = addr_cmd_complete;
6313
6314 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6315 struct hci_conn_params *params;
6316 u8 addr_type;
6317
6318 if (!bdaddr_type_is_valid(cp->addr.type)) {
6319 err = cmd->cmd_complete(cmd,
6320 MGMT_STATUS_INVALID_PARAMS);
6321 mgmt_pending_remove(cmd);
6322 goto unlock;
6323 }
6324
6325 if (cp->addr.type == BDADDR_BREDR) {
6326 err = hci_bdaddr_list_del(&hdev->whitelist,
6327 &cp->addr.bdaddr,
6328 cp->addr.type);
6329 if (err) {
6330 err = cmd->cmd_complete(cmd,
6331 MGMT_STATUS_INVALID_PARAMS);
6332 mgmt_pending_remove(cmd);
6333 goto unlock;
6334 }
6335
6336 __hci_update_page_scan(&req);
6337
6338 device_removed(sk, hdev, &cp->addr.bdaddr,
6339 cp->addr.type);
6340 goto complete;
6341 }
6342
6343 addr_type = le_addr_type(cp->addr.type);
6344
6345 /* Kernel internally uses conn_params with resolvable private
6346 * address, but Remove Device allows only identity addresses.
6347 * Make sure it is enforced before calling
6348 * hci_conn_params_lookup.
6349 */
6350 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6351 err = cmd->cmd_complete(cmd,
6352 MGMT_STATUS_INVALID_PARAMS);
6353 mgmt_pending_remove(cmd);
6354 goto unlock;
6355 }
6356
6357 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
6358 addr_type);
6359 if (!params) {
6360 err = cmd->cmd_complete(cmd,
6361 MGMT_STATUS_INVALID_PARAMS);
6362 mgmt_pending_remove(cmd);
6363 goto unlock;
6364 }
6365
6366 if (params->auto_connect == HCI_AUTO_CONN_DISABLED ||
6367 params->auto_connect == HCI_AUTO_CONN_EXPLICIT) {
6368 err = cmd->cmd_complete(cmd,
6369 MGMT_STATUS_INVALID_PARAMS);
6370 mgmt_pending_remove(cmd);
6371 goto unlock;
6372 }
6373
6374 list_del(&params->action);
6375 list_del(&params->list);
6376 kfree(params);
6377 __hci_update_background_scan(&req);
6378
6379 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
6380 } else {
6381 struct hci_conn_params *p, *tmp;
6382 struct bdaddr_list *b, *btmp;
6383
6384 if (cp->addr.type) {
6385 err = cmd->cmd_complete(cmd,
6386 MGMT_STATUS_INVALID_PARAMS);
6387 mgmt_pending_remove(cmd);
6388 goto unlock;
6389 }
6390
6391 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
6392 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
6393 list_del(&b->list);
6394 kfree(b);
6395 }
6396
6397 __hci_update_page_scan(&req);
6398
6399 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
6400 if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
6401 continue;
6402 device_removed(sk, hdev, &p->addr, p->addr_type);
6403 if (p->explicit_connect) {
6404 p->auto_connect = HCI_AUTO_CONN_EXPLICIT;
6405 continue;
6406 }
6407 list_del(&p->action);
6408 list_del(&p->list);
6409 kfree(p);
6410 }
6411
6412 BT_DBG("All LE connection parameters were removed");
6413
6414 __hci_update_background_scan(&req);
6415 }
6416
6417 complete:
6418 err = hci_req_run(&req, remove_device_complete);
6419 if (err < 0) {
6420 /* ENODATA means no HCI commands were needed (e.g. if
6421 * the adapter is powered off).
6422 */
6423 if (err == -ENODATA)
6424 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6425 mgmt_pending_remove(cmd);
6426 }
6427
6428 unlock:
6429 hci_dev_unlock(hdev);
6430 return err;
6431 }
6432
6433 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
6434 u16 len)
6435 {
6436 struct mgmt_cp_load_conn_param *cp = data;
6437 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
6438 sizeof(struct mgmt_conn_param));
6439 u16 param_count, expected_len;
6440 int i;
6441
6442 if (!lmp_le_capable(hdev))
6443 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6444 MGMT_STATUS_NOT_SUPPORTED);
6445
6446 param_count = __le16_to_cpu(cp->param_count);
6447 if (param_count > max_param_count) {
6448 BT_ERR("load_conn_param: too big param_count value %u",
6449 param_count);
6450 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6451 MGMT_STATUS_INVALID_PARAMS);
6452 }
6453
6454 expected_len = sizeof(*cp) + param_count *
6455 sizeof(struct mgmt_conn_param);
6456 if (expected_len != len) {
6457 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
6458 expected_len, len);
6459 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6460 MGMT_STATUS_INVALID_PARAMS);
6461 }
6462
6463 BT_DBG("%s param_count %u", hdev->name, param_count);
6464
6465 hci_dev_lock(hdev);
6466
6467 hci_conn_params_clear_disabled(hdev);
6468
6469 for (i = 0; i < param_count; i++) {
6470 struct mgmt_conn_param *param = &cp->params[i];
6471 struct hci_conn_params *hci_param;
6472 u16 min, max, latency, timeout;
6473 u8 addr_type;
6474
6475 BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
6476 param->addr.type);
6477
6478 if (param->addr.type == BDADDR_LE_PUBLIC) {
6479 addr_type = ADDR_LE_DEV_PUBLIC;
6480 } else if (param->addr.type == BDADDR_LE_RANDOM) {
6481 addr_type = ADDR_LE_DEV_RANDOM;
6482 } else {
6483 BT_ERR("Ignoring invalid connection parameters");
6484 continue;
6485 }
6486
6487 min = le16_to_cpu(param->min_interval);
6488 max = le16_to_cpu(param->max_interval);
6489 latency = le16_to_cpu(param->latency);
6490 timeout = le16_to_cpu(param->timeout);
6491
6492 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
6493 min, max, latency, timeout);
6494
6495 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
6496 BT_ERR("Ignoring invalid connection parameters");
6497 continue;
6498 }
6499
6500 hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
6501 addr_type);
6502 if (!hci_param) {
6503 BT_ERR("Failed to add connection parameters");
6504 continue;
6505 }
6506
6507 hci_param->conn_min_interval = min;
6508 hci_param->conn_max_interval = max;
6509 hci_param->conn_latency = latency;
6510 hci_param->supervision_timeout = timeout;
6511 }
6512
6513 hci_dev_unlock(hdev);
6514
6515 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0,
6516 NULL, 0);
6517 }
6518
6519 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
6520 void *data, u16 len)
6521 {
6522 struct mgmt_cp_set_external_config *cp = data;
6523 bool changed;
6524 int err;
6525
6526 BT_DBG("%s", hdev->name);
6527
6528 if (hdev_is_powered(hdev))
6529 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6530 MGMT_STATUS_REJECTED);
6531
6532 if (cp->config != 0x00 && cp->config != 0x01)
6533 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6534 MGMT_STATUS_INVALID_PARAMS);
6535
6536 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6537 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6538 MGMT_STATUS_NOT_SUPPORTED);
6539
6540 hci_dev_lock(hdev);
6541
6542 if (cp->config)
6543 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED);
6544 else
6545 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED);
6546
6547 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6548 if (err < 0)
6549 goto unlock;
6550
6551 if (!changed)
6552 goto unlock;
6553
6554 err = new_options(hdev, sk);
6555
6556 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) {
6557 mgmt_index_removed(hdev);
6558
6559 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) {
6560 hci_dev_set_flag(hdev, HCI_CONFIG);
6561 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6562
6563 queue_work(hdev->req_workqueue, &hdev->power_on);
6564 } else {
6565 set_bit(HCI_RAW, &hdev->flags);
6566 mgmt_index_added(hdev);
6567 }
6568 }
6569
6570 unlock:
6571 hci_dev_unlock(hdev);
6572 return err;
6573 }
6574
6575 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6576 void *data, u16 len)
6577 {
6578 struct mgmt_cp_set_public_address *cp = data;
6579 bool changed;
6580 int err;
6581
6582 BT_DBG("%s", hdev->name);
6583
6584 if (hdev_is_powered(hdev))
6585 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6586 MGMT_STATUS_REJECTED);
6587
6588 if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6589 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6590 MGMT_STATUS_INVALID_PARAMS);
6591
6592 if (!hdev->set_bdaddr)
6593 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6594 MGMT_STATUS_NOT_SUPPORTED);
6595
6596 hci_dev_lock(hdev);
6597
6598 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6599 bacpy(&hdev->public_addr, &cp->bdaddr);
6600
6601 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6602 if (err < 0)
6603 goto unlock;
6604
6605 if (!changed)
6606 goto unlock;
6607
6608 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
6609 err = new_options(hdev, sk);
6610
6611 if (is_configured(hdev)) {
6612 mgmt_index_removed(hdev);
6613
6614 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED);
6615
6616 hci_dev_set_flag(hdev, HCI_CONFIG);
6617 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6618
6619 queue_work(hdev->req_workqueue, &hdev->power_on);
6620 }
6621
6622 unlock:
6623 hci_dev_unlock(hdev);
6624 return err;
6625 }
6626
6627 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6628 u8 data_len)
6629 {
6630 eir[eir_len++] = sizeof(type) + data_len;
6631 eir[eir_len++] = type;
6632 memcpy(&eir[eir_len], data, data_len);
6633 eir_len += data_len;
6634
6635 return eir_len;
6636 }
6637
6638 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
6639 u16 opcode, struct sk_buff *skb)
6640 {
6641 const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp;
6642 struct mgmt_rp_read_local_oob_ext_data *mgmt_rp;
6643 u8 *h192, *r192, *h256, *r256;
6644 struct mgmt_pending_cmd *cmd;
6645 u16 eir_len;
6646 int err;
6647
6648 BT_DBG("%s status %u", hdev->name, status);
6649
6650 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev);
6651 if (!cmd)
6652 return;
6653
6654 mgmt_cp = cmd->param;
6655
6656 if (status) {
6657 status = mgmt_status(status);
6658 eir_len = 0;
6659
6660 h192 = NULL;
6661 r192 = NULL;
6662 h256 = NULL;
6663 r256 = NULL;
6664 } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
6665 struct hci_rp_read_local_oob_data *rp;
6666
6667 if (skb->len != sizeof(*rp)) {
6668 status = MGMT_STATUS_FAILED;
6669 eir_len = 0;
6670 } else {
6671 status = MGMT_STATUS_SUCCESS;
6672 rp = (void *)skb->data;
6673
6674 eir_len = 5 + 18 + 18;
6675 h192 = rp->hash;
6676 r192 = rp->rand;
6677 h256 = NULL;
6678 r256 = NULL;
6679 }
6680 } else {
6681 struct hci_rp_read_local_oob_ext_data *rp;
6682
6683 if (skb->len != sizeof(*rp)) {
6684 status = MGMT_STATUS_FAILED;
6685 eir_len = 0;
6686 } else {
6687 status = MGMT_STATUS_SUCCESS;
6688 rp = (void *)skb->data;
6689
6690 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
6691 eir_len = 5 + 18 + 18;
6692 h192 = NULL;
6693 r192 = NULL;
6694 } else {
6695 eir_len = 5 + 18 + 18 + 18 + 18;
6696 h192 = rp->hash192;
6697 r192 = rp->rand192;
6698 }
6699
6700 h256 = rp->hash256;
6701 r256 = rp->rand256;
6702 }
6703 }
6704
6705 mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL);
6706 if (!mgmt_rp)
6707 goto done;
6708
6709 if (status)
6710 goto send_rsp;
6711
6712 eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
6713 hdev->dev_class, 3);
6714
6715 if (h192 && r192) {
6716 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6717 EIR_SSP_HASH_C192, h192, 16);
6718 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6719 EIR_SSP_RAND_R192, r192, 16);
6720 }
6721
6722 if (h256 && r256) {
6723 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6724 EIR_SSP_HASH_C256, h256, 16);
6725 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6726 EIR_SSP_RAND_R256, r256, 16);
6727 }
6728
6729 send_rsp:
6730 mgmt_rp->type = mgmt_cp->type;
6731 mgmt_rp->eir_len = cpu_to_le16(eir_len);
6732
6733 err = mgmt_cmd_complete(cmd->sk, hdev->id,
6734 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status,
6735 mgmt_rp, sizeof(*mgmt_rp) + eir_len);
6736 if (err < 0 || status)
6737 goto done;
6738
6739 hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS);
6740
6741 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6742 mgmt_rp, sizeof(*mgmt_rp) + eir_len,
6743 HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
6744 done:
6745 kfree(mgmt_rp);
6746 mgmt_pending_remove(cmd);
6747 }
6748
6749 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
6750 struct mgmt_cp_read_local_oob_ext_data *cp)
6751 {
6752 struct mgmt_pending_cmd *cmd;
6753 struct hci_request req;
6754 int err;
6755
6756 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
6757 cp, sizeof(*cp));
6758 if (!cmd)
6759 return -ENOMEM;
6760
6761 hci_req_init(&req, hdev);
6762
6763 if (bredr_sc_enabled(hdev))
6764 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
6765 else
6766 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
6767
6768 err = hci_req_run_skb(&req, read_local_oob_ext_data_complete);
6769 if (err < 0) {
6770 mgmt_pending_remove(cmd);
6771 return err;
6772 }
6773
6774 return 0;
6775 }
6776
6777 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
6778 void *data, u16 data_len)
6779 {
6780 struct mgmt_cp_read_local_oob_ext_data *cp = data;
6781 struct mgmt_rp_read_local_oob_ext_data *rp;
6782 size_t rp_len;
6783 u16 eir_len;
6784 u8 status, flags, role, addr[7], hash[16], rand[16];
6785 int err;
6786
6787 BT_DBG("%s", hdev->name);
6788
6789 if (hdev_is_powered(hdev)) {
6790 switch (cp->type) {
6791 case BIT(BDADDR_BREDR):
6792 status = mgmt_bredr_support(hdev);
6793 if (status)
6794 eir_len = 0;
6795 else
6796 eir_len = 5;
6797 break;
6798 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6799 status = mgmt_le_support(hdev);
6800 if (status)
6801 eir_len = 0;
6802 else
6803 eir_len = 9 + 3 + 18 + 18 + 3;
6804 break;
6805 default:
6806 status = MGMT_STATUS_INVALID_PARAMS;
6807 eir_len = 0;
6808 break;
6809 }
6810 } else {
6811 status = MGMT_STATUS_NOT_POWERED;
6812 eir_len = 0;
6813 }
6814
6815 rp_len = sizeof(*rp) + eir_len;
6816 rp = kmalloc(rp_len, GFP_ATOMIC);
6817 if (!rp)
6818 return -ENOMEM;
6819
6820 if (status)
6821 goto complete;
6822
6823 hci_dev_lock(hdev);
6824
6825 eir_len = 0;
6826 switch (cp->type) {
6827 case BIT(BDADDR_BREDR):
6828 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
6829 err = read_local_ssp_oob_req(hdev, sk, cp);
6830 hci_dev_unlock(hdev);
6831 if (!err)
6832 goto done;
6833
6834 status = MGMT_STATUS_FAILED;
6835 goto complete;
6836 } else {
6837 eir_len = eir_append_data(rp->eir, eir_len,
6838 EIR_CLASS_OF_DEV,
6839 hdev->dev_class, 3);
6840 }
6841 break;
6842 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6843 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
6844 smp_generate_oob(hdev, hash, rand) < 0) {
6845 hci_dev_unlock(hdev);
6846 status = MGMT_STATUS_FAILED;
6847 goto complete;
6848 }
6849
6850 /* This should return the active RPA, but since the RPA
6851 * is only programmed on demand, it is really hard to fill
6852 * this in at the moment. For now disallow retrieving
6853 * local out-of-band data when privacy is in use.
6854 *
6855 * Returning the identity address will not help here since
6856 * pairing happens before the identity resolving key is
6857 * known and thus the connection establishment happens
6858 * based on the RPA and not the identity address.
6859 */
6860 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6861 hci_dev_unlock(hdev);
6862 status = MGMT_STATUS_REJECTED;
6863 goto complete;
6864 }
6865
6866 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
6867 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
6868 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
6869 bacmp(&hdev->static_addr, BDADDR_ANY))) {
6870 memcpy(addr, &hdev->static_addr, 6);
6871 addr[6] = 0x01;
6872 } else {
6873 memcpy(addr, &hdev->bdaddr, 6);
6874 addr[6] = 0x00;
6875 }
6876
6877 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR,
6878 addr, sizeof(addr));
6879
6880 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
6881 role = 0x02;
6882 else
6883 role = 0x01;
6884
6885 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE,
6886 &role, sizeof(role));
6887
6888 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) {
6889 eir_len = eir_append_data(rp->eir, eir_len,
6890 EIR_LE_SC_CONFIRM,
6891 hash, sizeof(hash));
6892
6893 eir_len = eir_append_data(rp->eir, eir_len,
6894 EIR_LE_SC_RANDOM,
6895 rand, sizeof(rand));
6896 }
6897
6898 flags = get_adv_discov_flags(hdev);
6899
6900 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
6901 flags |= LE_AD_NO_BREDR;
6902
6903 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS,
6904 &flags, sizeof(flags));
6905 break;
6906 }
6907
6908 hci_dev_unlock(hdev);
6909
6910 hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS);
6911
6912 status = MGMT_STATUS_SUCCESS;
6913
6914 complete:
6915 rp->type = cp->type;
6916 rp->eir_len = cpu_to_le16(eir_len);
6917
6918 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
6919 status, rp, sizeof(*rp) + eir_len);
6920 if (err < 0 || status)
6921 goto done;
6922
6923 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6924 rp, sizeof(*rp) + eir_len,
6925 HCI_MGMT_OOB_DATA_EVENTS, sk);
6926
6927 done:
6928 kfree(rp);
6929
6930 return err;
6931 }
6932
6933 static u32 get_supported_adv_flags(struct hci_dev *hdev)
6934 {
6935 u32 flags = 0;
6936
6937 flags |= MGMT_ADV_FLAG_CONNECTABLE;
6938 flags |= MGMT_ADV_FLAG_DISCOV;
6939 flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
6940 flags |= MGMT_ADV_FLAG_MANAGED_FLAGS;
6941
6942 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID)
6943 flags |= MGMT_ADV_FLAG_TX_POWER;
6944
6945 return flags;
6946 }
6947
6948 static int read_adv_features(struct sock *sk, struct hci_dev *hdev,
6949 void *data, u16 data_len)
6950 {
6951 struct mgmt_rp_read_adv_features *rp;
6952 size_t rp_len;
6953 int err, i;
6954 bool instance;
6955 struct adv_info *adv_instance;
6956 u32 supported_flags;
6957
6958 BT_DBG("%s", hdev->name);
6959
6960 if (!lmp_le_capable(hdev))
6961 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6962 MGMT_STATUS_REJECTED);
6963
6964 hci_dev_lock(hdev);
6965
6966 rp_len = sizeof(*rp);
6967
6968 instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE);
6969 if (instance)
6970 rp_len += hdev->adv_instance_cnt;
6971
6972 rp = kmalloc(rp_len, GFP_ATOMIC);
6973 if (!rp) {
6974 hci_dev_unlock(hdev);
6975 return -ENOMEM;
6976 }
6977
6978 supported_flags = get_supported_adv_flags(hdev);
6979
6980 rp->supported_flags = cpu_to_le32(supported_flags);
6981 rp->max_adv_data_len = HCI_MAX_AD_LENGTH;
6982 rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH;
6983 rp->max_instances = HCI_MAX_ADV_INSTANCES;
6984
6985 if (instance) {
6986 i = 0;
6987 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
6988 if (i >= hdev->adv_instance_cnt)
6989 break;
6990
6991 rp->instance[i] = adv_instance->instance;
6992 i++;
6993 }
6994 rp->num_instances = hdev->adv_instance_cnt;
6995 } else {
6996 rp->num_instances = 0;
6997 }
6998
6999 hci_dev_unlock(hdev);
7000
7001 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
7002 MGMT_STATUS_SUCCESS, rp, rp_len);
7003
7004 kfree(rp);
7005
7006 return err;
7007 }
7008
7009 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data,
7010 u8 len, bool is_adv_data)
7011 {
7012 u8 max_len = HCI_MAX_AD_LENGTH;
7013 int i, cur_len;
7014 bool flags_managed = false;
7015 bool tx_power_managed = false;
7016 u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV |
7017 MGMT_ADV_FLAG_MANAGED_FLAGS;
7018
7019 if (is_adv_data && (adv_flags & flags_params)) {
7020 flags_managed = true;
7021 max_len -= 3;
7022 }
7023
7024 if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) {
7025 tx_power_managed = true;
7026 max_len -= 3;
7027 }
7028
7029 if (len > max_len)
7030 return false;
7031
7032 /* Make sure that the data is correctly formatted. */
7033 for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) {
7034 cur_len = data[i];
7035
7036 if (flags_managed && data[i + 1] == EIR_FLAGS)
7037 return false;
7038
7039 if (tx_power_managed && data[i + 1] == EIR_TX_POWER)
7040 return false;
7041
7042 /* If the current field length would exceed the total data
7043 * length, then it's invalid.
7044 */
7045 if (i + cur_len >= len)
7046 return false;
7047 }
7048
7049 return true;
7050 }
7051
7052 static void add_advertising_complete(struct hci_dev *hdev, u8 status,
7053 u16 opcode)
7054 {
7055 struct mgmt_pending_cmd *cmd;
7056 struct mgmt_cp_add_advertising *cp;
7057 struct mgmt_rp_add_advertising rp;
7058 struct adv_info *adv_instance, *n;
7059 u8 instance;
7060
7061 BT_DBG("status %d", status);
7062
7063 hci_dev_lock(hdev);
7064
7065 cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev);
7066
7067 if (status)
7068 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
7069
7070 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
7071 if (!adv_instance->pending)
7072 continue;
7073
7074 if (!status) {
7075 adv_instance->pending = false;
7076 continue;
7077 }
7078
7079 instance = adv_instance->instance;
7080
7081 if (hdev->cur_adv_instance == instance)
7082 cancel_adv_timeout(hdev);
7083
7084 hci_remove_adv_instance(hdev, instance);
7085 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance);
7086 }
7087
7088 if (!cmd)
7089 goto unlock;
7090
7091 cp = cmd->param;
7092 rp.instance = cp->instance;
7093
7094 if (status)
7095 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
7096 mgmt_status(status));
7097 else
7098 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
7099 mgmt_status(status), &rp, sizeof(rp));
7100
7101 mgmt_pending_remove(cmd);
7102
7103 unlock:
7104 hci_dev_unlock(hdev);
7105 }
7106
7107 void mgmt_adv_timeout_expired(struct hci_dev *hdev)
7108 {
7109 u8 instance;
7110 struct hci_request req;
7111
7112 hdev->adv_instance_timeout = 0;
7113
7114 instance = get_current_adv_instance(hdev);
7115 if (instance == 0x00)
7116 return;
7117
7118 hci_dev_lock(hdev);
7119 hci_req_init(&req, hdev);
7120
7121 clear_adv_instance(hdev, &req, instance, false);
7122
7123 if (list_empty(&hdev->adv_instances))
7124 disable_advertising(&req);
7125
7126 if (!skb_queue_empty(&req.cmd_q))
7127 hci_req_run(&req, NULL);
7128
7129 hci_dev_unlock(hdev);
7130 }
7131
7132 static int add_advertising(struct sock *sk, struct hci_dev *hdev,
7133 void *data, u16 data_len)
7134 {
7135 struct mgmt_cp_add_advertising *cp = data;
7136 struct mgmt_rp_add_advertising rp;
7137 u32 flags;
7138 u32 supported_flags;
7139 u8 status;
7140 u16 timeout, duration;
7141 unsigned int prev_instance_cnt = hdev->adv_instance_cnt;
7142 u8 schedule_instance = 0;
7143 struct adv_info *next_instance;
7144 int err;
7145 struct mgmt_pending_cmd *cmd;
7146 struct hci_request req;
7147
7148 BT_DBG("%s", hdev->name);
7149
7150 status = mgmt_le_support(hdev);
7151 if (status)
7152 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7153 status);
7154
7155 if (data_len != sizeof(*cp) + cp->adv_data_len + cp->scan_rsp_len)
7156 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7157 MGMT_STATUS_INVALID_PARAMS);
7158
7159 flags = __le32_to_cpu(cp->flags);
7160 timeout = __le16_to_cpu(cp->timeout);
7161 duration = __le16_to_cpu(cp->duration);
7162
7163 /* The current implementation only supports a subset of the specified
7164 * flags.
7165 */
7166 supported_flags = get_supported_adv_flags(hdev);
7167 if (flags & ~supported_flags)
7168 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7169 MGMT_STATUS_INVALID_PARAMS);
7170
7171 hci_dev_lock(hdev);
7172
7173 if (timeout && !hdev_is_powered(hdev)) {
7174 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7175 MGMT_STATUS_REJECTED);
7176 goto unlock;
7177 }
7178
7179 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7180 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7181 pending_find(MGMT_OP_SET_LE, hdev)) {
7182 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7183 MGMT_STATUS_BUSY);
7184 goto unlock;
7185 }
7186
7187 if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) ||
7188 !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len,
7189 cp->scan_rsp_len, false)) {
7190 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7191 MGMT_STATUS_INVALID_PARAMS);
7192 goto unlock;
7193 }
7194
7195 err = hci_add_adv_instance(hdev, cp->instance, flags,
7196 cp->adv_data_len, cp->data,
7197 cp->scan_rsp_len,
7198 cp->data + cp->adv_data_len,
7199 timeout, duration);
7200 if (err < 0) {
7201 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7202 MGMT_STATUS_FAILED);
7203 goto unlock;
7204 }
7205
7206 /* Only trigger an advertising added event if a new instance was
7207 * actually added.
7208 */
7209 if (hdev->adv_instance_cnt > prev_instance_cnt)
7210 advertising_added(sk, hdev, cp->instance);
7211
7212 hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE);
7213
7214 if (hdev->cur_adv_instance == cp->instance) {
7215 /* If the currently advertised instance is being changed then
7216 * cancel the current advertising and schedule the next
7217 * instance. If there is only one instance then the overridden
7218 * advertising data will be visible right away.
7219 */
7220 cancel_adv_timeout(hdev);
7221
7222 next_instance = hci_get_next_instance(hdev, cp->instance);
7223 if (next_instance)
7224 schedule_instance = next_instance->instance;
7225 } else if (!hdev->adv_instance_timeout) {
7226 /* Immediately advertise the new instance if no other
7227 * instance is currently being advertised.
7228 */
7229 schedule_instance = cp->instance;
7230 }
7231
7232 /* If the HCI_ADVERTISING flag is set or the device isn't powered or
7233 * there is no instance to be advertised then we have no HCI
7234 * communication to make. Simply return.
7235 */
7236 if (!hdev_is_powered(hdev) ||
7237 hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7238 !schedule_instance) {
7239 rp.instance = cp->instance;
7240 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7241 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7242 goto unlock;
7243 }
7244
7245 /* We're good to go, update advertising data, parameters, and start
7246 * advertising.
7247 */
7248 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data,
7249 data_len);
7250 if (!cmd) {
7251 err = -ENOMEM;
7252 goto unlock;
7253 }
7254
7255 hci_req_init(&req, hdev);
7256
7257 err = schedule_adv_instance(&req, schedule_instance, true);
7258
7259 if (!err)
7260 err = hci_req_run(&req, add_advertising_complete);
7261
7262 if (err < 0)
7263 mgmt_pending_remove(cmd);
7264
7265 unlock:
7266 hci_dev_unlock(hdev);
7267
7268 return err;
7269 }
7270
7271 static void remove_advertising_complete(struct hci_dev *hdev, u8 status,
7272 u16 opcode)
7273 {
7274 struct mgmt_pending_cmd *cmd;
7275 struct mgmt_cp_remove_advertising *cp;
7276 struct mgmt_rp_remove_advertising rp;
7277
7278 BT_DBG("status %d", status);
7279
7280 hci_dev_lock(hdev);
7281
7282 /* A failure status here only means that we failed to disable
7283 * advertising. Otherwise, the advertising instance has been removed,
7284 * so report success.
7285 */
7286 cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev);
7287 if (!cmd)
7288 goto unlock;
7289
7290 cp = cmd->param;
7291 rp.instance = cp->instance;
7292
7293 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS,
7294 &rp, sizeof(rp));
7295 mgmt_pending_remove(cmd);
7296
7297 unlock:
7298 hci_dev_unlock(hdev);
7299 }
7300
7301 static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
7302 void *data, u16 data_len)
7303 {
7304 struct mgmt_cp_remove_advertising *cp = data;
7305 struct mgmt_rp_remove_advertising rp;
7306 struct mgmt_pending_cmd *cmd;
7307 struct hci_request req;
7308 int err;
7309
7310 BT_DBG("%s", hdev->name);
7311
7312 hci_dev_lock(hdev);
7313
7314 if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) {
7315 err = mgmt_cmd_status(sk, hdev->id,
7316 MGMT_OP_REMOVE_ADVERTISING,
7317 MGMT_STATUS_INVALID_PARAMS);
7318 goto unlock;
7319 }
7320
7321 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7322 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7323 pending_find(MGMT_OP_SET_LE, hdev)) {
7324 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7325 MGMT_STATUS_BUSY);
7326 goto unlock;
7327 }
7328
7329 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) {
7330 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7331 MGMT_STATUS_INVALID_PARAMS);
7332 goto unlock;
7333 }
7334
7335 hci_req_init(&req, hdev);
7336
7337 clear_adv_instance(hdev, &req, cp->instance, true);
7338
7339 if (list_empty(&hdev->adv_instances))
7340 disable_advertising(&req);
7341
7342 /* If no HCI commands have been collected so far or the HCI_ADVERTISING
7343 * flag is set or the device isn't powered then we have no HCI
7344 * communication to make. Simply return.
7345 */
7346 if (skb_queue_empty(&req.cmd_q) ||
7347 !hdev_is_powered(hdev) ||
7348 hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
7349 rp.instance = cp->instance;
7350 err = mgmt_cmd_complete(sk, hdev->id,
7351 MGMT_OP_REMOVE_ADVERTISING,
7352 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7353 goto unlock;
7354 }
7355
7356 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data,
7357 data_len);
7358 if (!cmd) {
7359 err = -ENOMEM;
7360 goto unlock;
7361 }
7362
7363 err = hci_req_run(&req, remove_advertising_complete);
7364 if (err < 0)
7365 mgmt_pending_remove(cmd);
7366
7367 unlock:
7368 hci_dev_unlock(hdev);
7369
7370 return err;
7371 }
7372
7373 static const struct hci_mgmt_handler mgmt_handlers[] = {
7374 { NULL }, /* 0x0000 (no command) */
7375 { read_version, MGMT_READ_VERSION_SIZE,
7376 HCI_MGMT_NO_HDEV |
7377 HCI_MGMT_UNTRUSTED },
7378 { read_commands, MGMT_READ_COMMANDS_SIZE,
7379 HCI_MGMT_NO_HDEV |
7380 HCI_MGMT_UNTRUSTED },
7381 { read_index_list, MGMT_READ_INDEX_LIST_SIZE,
7382 HCI_MGMT_NO_HDEV |
7383 HCI_MGMT_UNTRUSTED },
7384 { read_controller_info, MGMT_READ_INFO_SIZE,
7385 HCI_MGMT_UNTRUSTED },
7386 { set_powered, MGMT_SETTING_SIZE },
7387 { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE },
7388 { set_connectable, MGMT_SETTING_SIZE },
7389 { set_fast_connectable, MGMT_SETTING_SIZE },
7390 { set_bondable, MGMT_SETTING_SIZE },
7391 { set_link_security, MGMT_SETTING_SIZE },
7392 { set_ssp, MGMT_SETTING_SIZE },
7393 { set_hs, MGMT_SETTING_SIZE },
7394 { set_le, MGMT_SETTING_SIZE },
7395 { set_dev_class, MGMT_SET_DEV_CLASS_SIZE },
7396 { set_local_name, MGMT_SET_LOCAL_NAME_SIZE },
7397 { add_uuid, MGMT_ADD_UUID_SIZE },
7398 { remove_uuid, MGMT_REMOVE_UUID_SIZE },
7399 { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE,
7400 HCI_MGMT_VAR_LEN },
7401 { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE,
7402 HCI_MGMT_VAR_LEN },
7403 { disconnect, MGMT_DISCONNECT_SIZE },
7404 { get_connections, MGMT_GET_CONNECTIONS_SIZE },
7405 { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE },
7406 { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE },
7407 { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE },
7408 { pair_device, MGMT_PAIR_DEVICE_SIZE },
7409 { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE },
7410 { unpair_device, MGMT_UNPAIR_DEVICE_SIZE },
7411 { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE },
7412 { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
7413 { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE },
7414 { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
7415 { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE },
7416 { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE,
7417 HCI_MGMT_VAR_LEN },
7418 { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
7419 { start_discovery, MGMT_START_DISCOVERY_SIZE },
7420 { stop_discovery, MGMT_STOP_DISCOVERY_SIZE },
7421 { confirm_name, MGMT_CONFIRM_NAME_SIZE },
7422 { block_device, MGMT_BLOCK_DEVICE_SIZE },
7423 { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE },
7424 { set_device_id, MGMT_SET_DEVICE_ID_SIZE },
7425 { set_advertising, MGMT_SETTING_SIZE },
7426 { set_bredr, MGMT_SETTING_SIZE },
7427 { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE },
7428 { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE },
7429 { set_secure_conn, MGMT_SETTING_SIZE },
7430 { set_debug_keys, MGMT_SETTING_SIZE },
7431 { set_privacy, MGMT_SET_PRIVACY_SIZE },
7432 { load_irks, MGMT_LOAD_IRKS_SIZE,
7433 HCI_MGMT_VAR_LEN },
7434 { get_conn_info, MGMT_GET_CONN_INFO_SIZE },
7435 { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE },
7436 { add_device, MGMT_ADD_DEVICE_SIZE },
7437 { remove_device, MGMT_REMOVE_DEVICE_SIZE },
7438 { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE,
7439 HCI_MGMT_VAR_LEN },
7440 { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE,
7441 HCI_MGMT_NO_HDEV |
7442 HCI_MGMT_UNTRUSTED },
7443 { read_config_info, MGMT_READ_CONFIG_INFO_SIZE,
7444 HCI_MGMT_UNCONFIGURED |
7445 HCI_MGMT_UNTRUSTED },
7446 { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE,
7447 HCI_MGMT_UNCONFIGURED },
7448 { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE,
7449 HCI_MGMT_UNCONFIGURED },
7450 { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE,
7451 HCI_MGMT_VAR_LEN },
7452 { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE },
7453 { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE,
7454 HCI_MGMT_NO_HDEV |
7455 HCI_MGMT_UNTRUSTED },
7456 { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE },
7457 { add_advertising, MGMT_ADD_ADVERTISING_SIZE,
7458 HCI_MGMT_VAR_LEN },
7459 { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE },
7460 };
7461
7462 void mgmt_index_added(struct hci_dev *hdev)
7463 {
7464 struct mgmt_ev_ext_index ev;
7465
7466 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7467 return;
7468
7469 switch (hdev->dev_type) {
7470 case HCI_BREDR:
7471 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7472 mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev,
7473 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7474 ev.type = 0x01;
7475 } else {
7476 mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0,
7477 HCI_MGMT_INDEX_EVENTS);
7478 ev.type = 0x00;
7479 }
7480 break;
7481 case HCI_AMP:
7482 ev.type = 0x02;
7483 break;
7484 default:
7485 return;
7486 }
7487
7488 ev.bus = hdev->bus;
7489
7490 mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev),
7491 HCI_MGMT_EXT_INDEX_EVENTS);
7492 }
7493
7494 void mgmt_index_removed(struct hci_dev *hdev)
7495 {
7496 struct mgmt_ev_ext_index ev;
7497 u8 status = MGMT_STATUS_INVALID_INDEX;
7498
7499 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7500 return;
7501
7502 switch (hdev->dev_type) {
7503 case HCI_BREDR:
7504 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7505
7506 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7507 mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev,
7508 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7509 ev.type = 0x01;
7510 } else {
7511 mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0,
7512 HCI_MGMT_INDEX_EVENTS);
7513 ev.type = 0x00;
7514 }
7515 break;
7516 case HCI_AMP:
7517 ev.type = 0x02;
7518 break;
7519 default:
7520 return;
7521 }
7522
7523 ev.bus = hdev->bus;
7524
7525 mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev),
7526 HCI_MGMT_EXT_INDEX_EVENTS);
7527 }
7528
7529 /* This function requires the caller holds hdev->lock */
7530 static void restart_le_actions(struct hci_request *req)
7531 {
7532 struct hci_dev *hdev = req->hdev;
7533 struct hci_conn_params *p;
7534
7535 list_for_each_entry(p, &hdev->le_conn_params, list) {
7536 /* Needed for AUTO_OFF case where might not "really"
7537 * have been powered off.
7538 */
7539 list_del_init(&p->action);
7540
7541 switch (p->auto_connect) {
7542 case HCI_AUTO_CONN_DIRECT:
7543 case HCI_AUTO_CONN_ALWAYS:
7544 list_add(&p->action, &hdev->pend_le_conns);
7545 break;
7546 case HCI_AUTO_CONN_REPORT:
7547 list_add(&p->action, &hdev->pend_le_reports);
7548 break;
7549 default:
7550 break;
7551 }
7552 }
7553
7554 __hci_update_background_scan(req);
7555 }
7556
7557 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7558 {
7559 struct cmd_lookup match = { NULL, hdev };
7560
7561 BT_DBG("status 0x%02x", status);
7562
7563 if (!status) {
7564 /* Register the available SMP channels (BR/EDR and LE) only
7565 * when successfully powering on the controller. This late
7566 * registration is required so that LE SMP can clearly
7567 * decide if the public address or static address is used.
7568 */
7569 smp_register(hdev);
7570 }
7571
7572 hci_dev_lock(hdev);
7573
7574 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7575
7576 new_settings(hdev, match.sk);
7577
7578 hci_dev_unlock(hdev);
7579
7580 if (match.sk)
7581 sock_put(match.sk);
7582 }
7583
7584 static int powered_update_hci(struct hci_dev *hdev)
7585 {
7586 struct hci_request req;
7587 struct adv_info *adv_instance;
7588 u8 link_sec;
7589
7590 hci_req_init(&req, hdev);
7591
7592 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
7593 !lmp_host_ssp_capable(hdev)) {
7594 u8 mode = 0x01;
7595
7596 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
7597
7598 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
7599 u8 support = 0x01;
7600
7601 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
7602 sizeof(support), &support);
7603 }
7604 }
7605
7606 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7607 lmp_bredr_capable(hdev)) {
7608 struct hci_cp_write_le_host_supported cp;
7609
7610 cp.le = 0x01;
7611 cp.simul = 0x00;
7612
7613 /* Check first if we already have the right
7614 * host state (host features set)
7615 */
7616 if (cp.le != lmp_host_le_capable(hdev) ||
7617 cp.simul != lmp_host_le_br_capable(hdev))
7618 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
7619 sizeof(cp), &cp);
7620 }
7621
7622 if (lmp_le_capable(hdev)) {
7623 /* Make sure the controller has a good default for
7624 * advertising data. This also applies to the case
7625 * where BR/EDR was toggled during the AUTO_OFF phase.
7626 */
7627 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7628 (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7629 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) {
7630 update_adv_data(&req);
7631 update_scan_rsp_data(&req);
7632 }
7633
7634 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7635 hdev->cur_adv_instance == 0x00 &&
7636 !list_empty(&hdev->adv_instances)) {
7637 adv_instance = list_first_entry(&hdev->adv_instances,
7638 struct adv_info, list);
7639 hdev->cur_adv_instance = adv_instance->instance;
7640 }
7641
7642 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7643 enable_advertising(&req);
7644 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7645 hdev->cur_adv_instance)
7646 schedule_adv_instance(&req, hdev->cur_adv_instance,
7647 true);
7648
7649 restart_le_actions(&req);
7650 }
7651
7652 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
7653 if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
7654 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
7655 sizeof(link_sec), &link_sec);
7656
7657 if (lmp_bredr_capable(hdev)) {
7658 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
7659 write_fast_connectable(&req, true);
7660 else
7661 write_fast_connectable(&req, false);
7662 __hci_update_page_scan(&req);
7663 update_class(&req);
7664 update_name(&req);
7665 update_eir(&req);
7666 }
7667
7668 return hci_req_run(&req, powered_complete);
7669 }
7670
7671 int mgmt_powered(struct hci_dev *hdev, u8 powered)
7672 {
7673 struct cmd_lookup match = { NULL, hdev };
7674 u8 status, zero_cod[] = { 0, 0, 0 };
7675 int err;
7676
7677 if (!hci_dev_test_flag(hdev, HCI_MGMT))
7678 return 0;
7679
7680 if (powered) {
7681 if (powered_update_hci(hdev) == 0)
7682 return 0;
7683
7684 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
7685 &match);
7686 goto new_settings;
7687 }
7688
7689 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7690
7691 /* If the power off is because of hdev unregistration let
7692 * use the appropriate INVALID_INDEX status. Otherwise use
7693 * NOT_POWERED. We cover both scenarios here since later in
7694 * mgmt_index_removed() any hci_conn callbacks will have already
7695 * been triggered, potentially causing misleading DISCONNECTED
7696 * status responses.
7697 */
7698 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
7699 status = MGMT_STATUS_INVALID_INDEX;
7700 else
7701 status = MGMT_STATUS_NOT_POWERED;
7702
7703 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7704
7705 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
7706 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
7707 zero_cod, sizeof(zero_cod), NULL);
7708
7709 new_settings:
7710 err = new_settings(hdev, match.sk);
7711
7712 if (match.sk)
7713 sock_put(match.sk);
7714
7715 return err;
7716 }
7717
7718 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
7719 {
7720 struct mgmt_pending_cmd *cmd;
7721 u8 status;
7722
7723 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7724 if (!cmd)
7725 return;
7726
7727 if (err == -ERFKILL)
7728 status = MGMT_STATUS_RFKILLED;
7729 else
7730 status = MGMT_STATUS_FAILED;
7731
7732 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
7733
7734 mgmt_pending_remove(cmd);
7735 }
7736
7737 void mgmt_discoverable_timeout(struct hci_dev *hdev)
7738 {
7739 struct hci_request req;
7740
7741 hci_dev_lock(hdev);
7742
7743 /* When discoverable timeout triggers, then just make sure
7744 * the limited discoverable flag is cleared. Even in the case
7745 * of a timeout triggered from general discoverable, it is
7746 * safe to unconditionally clear the flag.
7747 */
7748 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
7749 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
7750
7751 hci_req_init(&req, hdev);
7752 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
7753 u8 scan = SCAN_PAGE;
7754 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
7755 sizeof(scan), &scan);
7756 }
7757 update_class(&req);
7758
7759 /* Advertising instances don't use the global discoverable setting, so
7760 * only update AD if advertising was enabled using Set Advertising.
7761 */
7762 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7763 update_adv_data(&req);
7764
7765 hci_req_run(&req, NULL);
7766
7767 hdev->discov_timeout = 0;
7768
7769 new_settings(hdev, NULL);
7770
7771 hci_dev_unlock(hdev);
7772 }
7773
7774 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
7775 bool persistent)
7776 {
7777 struct mgmt_ev_new_link_key ev;
7778
7779 memset(&ev, 0, sizeof(ev));
7780
7781 ev.store_hint = persistent;
7782 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7783 ev.key.addr.type = BDADDR_BREDR;
7784 ev.key.type = key->type;
7785 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
7786 ev.key.pin_len = key->pin_len;
7787
7788 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
7789 }
7790
7791 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
7792 {
7793 switch (ltk->type) {
7794 case SMP_LTK:
7795 case SMP_LTK_SLAVE:
7796 if (ltk->authenticated)
7797 return MGMT_LTK_AUTHENTICATED;
7798 return MGMT_LTK_UNAUTHENTICATED;
7799 case SMP_LTK_P256:
7800 if (ltk->authenticated)
7801 return MGMT_LTK_P256_AUTH;
7802 return MGMT_LTK_P256_UNAUTH;
7803 case SMP_LTK_P256_DEBUG:
7804 return MGMT_LTK_P256_DEBUG;
7805 }
7806
7807 return MGMT_LTK_UNAUTHENTICATED;
7808 }
7809
7810 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
7811 {
7812 struct mgmt_ev_new_long_term_key ev;
7813
7814 memset(&ev, 0, sizeof(ev));
7815
7816 /* Devices using resolvable or non-resolvable random addresses
7817 * without providing an identity resolving key don't require
7818 * to store long term keys. Their addresses will change the
7819 * next time around.
7820 *
7821 * Only when a remote device provides an identity address
7822 * make sure the long term key is stored. If the remote
7823 * identity is known, the long term keys are internally
7824 * mapped to the identity address. So allow static random
7825 * and public addresses here.
7826 */
7827 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7828 (key->bdaddr.b[5] & 0xc0) != 0xc0)
7829 ev.store_hint = 0x00;
7830 else
7831 ev.store_hint = persistent;
7832
7833 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7834 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
7835 ev.key.type = mgmt_ltk_type(key);
7836 ev.key.enc_size = key->enc_size;
7837 ev.key.ediv = key->ediv;
7838 ev.key.rand = key->rand;
7839
7840 if (key->type == SMP_LTK)
7841 ev.key.master = 1;
7842
7843 /* Make sure we copy only the significant bytes based on the
7844 * encryption key size, and set the rest of the value to zeroes.
7845 */
7846 memcpy(ev.key.val, key->val, key->enc_size);
7847 memset(ev.key.val + key->enc_size, 0,
7848 sizeof(ev.key.val) - key->enc_size);
7849
7850 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
7851 }
7852
7853 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent)
7854 {
7855 struct mgmt_ev_new_irk ev;
7856
7857 memset(&ev, 0, sizeof(ev));
7858
7859 ev.store_hint = persistent;
7860
7861 bacpy(&ev.rpa, &irk->rpa);
7862 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
7863 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
7864 memcpy(ev.irk.val, irk->val, sizeof(irk->val));
7865
7866 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
7867 }
7868
7869 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
7870 bool persistent)
7871 {
7872 struct mgmt_ev_new_csrk ev;
7873
7874 memset(&ev, 0, sizeof(ev));
7875
7876 /* Devices using resolvable or non-resolvable random addresses
7877 * without providing an identity resolving key don't require
7878 * to store signature resolving keys. Their addresses will change
7879 * the next time around.
7880 *
7881 * Only when a remote device provides an identity address
7882 * make sure the signature resolving key is stored. So allow
7883 * static random and public addresses here.
7884 */
7885 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7886 (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
7887 ev.store_hint = 0x00;
7888 else
7889 ev.store_hint = persistent;
7890
7891 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
7892 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
7893 ev.key.type = csrk->type;
7894 memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
7895
7896 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
7897 }
7898
7899 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
7900 u8 bdaddr_type, u8 store_hint, u16 min_interval,
7901 u16 max_interval, u16 latency, u16 timeout)
7902 {
7903 struct mgmt_ev_new_conn_param ev;
7904
7905 if (!hci_is_identity_address(bdaddr, bdaddr_type))
7906 return;
7907
7908 memset(&ev, 0, sizeof(ev));
7909 bacpy(&ev.addr.bdaddr, bdaddr);
7910 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
7911 ev.store_hint = store_hint;
7912 ev.min_interval = cpu_to_le16(min_interval);
7913 ev.max_interval = cpu_to_le16(max_interval);
7914 ev.latency = cpu_to_le16(latency);
7915 ev.timeout = cpu_to_le16(timeout);
7916
7917 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
7918 }
7919
7920 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
7921 u32 flags, u8 *name, u8 name_len)
7922 {
7923 char buf[512];
7924 struct mgmt_ev_device_connected *ev = (void *) buf;
7925 u16 eir_len = 0;
7926
7927 bacpy(&ev->addr.bdaddr, &conn->dst);
7928 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
7929
7930 ev->flags = __cpu_to_le32(flags);
7931
7932 /* We must ensure that the EIR Data fields are ordered and
7933 * unique. Keep it simple for now and avoid the problem by not
7934 * adding any BR/EDR data to the LE adv.
7935 */
7936 if (conn->le_adv_data_len > 0) {
7937 memcpy(&ev->eir[eir_len],
7938 conn->le_adv_data, conn->le_adv_data_len);
7939 eir_len = conn->le_adv_data_len;
7940 } else {
7941 if (name_len > 0)
7942 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
7943 name, name_len);
7944
7945 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
7946 eir_len = eir_append_data(ev->eir, eir_len,
7947 EIR_CLASS_OF_DEV,
7948 conn->dev_class, 3);
7949 }
7950
7951 ev->eir_len = cpu_to_le16(eir_len);
7952
7953 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
7954 sizeof(*ev) + eir_len, NULL);
7955 }
7956
7957 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data)
7958 {
7959 struct sock **sk = data;
7960
7961 cmd->cmd_complete(cmd, 0);
7962
7963 *sk = cmd->sk;
7964 sock_hold(*sk);
7965
7966 mgmt_pending_remove(cmd);
7967 }
7968
7969 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data)
7970 {
7971 struct hci_dev *hdev = data;
7972 struct mgmt_cp_unpair_device *cp = cmd->param;
7973
7974 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
7975
7976 cmd->cmd_complete(cmd, 0);
7977 mgmt_pending_remove(cmd);
7978 }
7979
7980 bool mgmt_powering_down(struct hci_dev *hdev)
7981 {
7982 struct mgmt_pending_cmd *cmd;
7983 struct mgmt_mode *cp;
7984
7985 cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7986 if (!cmd)
7987 return false;
7988
7989 cp = cmd->param;
7990 if (!cp->val)
7991 return true;
7992
7993 return false;
7994 }
7995
7996 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
7997 u8 link_type, u8 addr_type, u8 reason,
7998 bool mgmt_connected)
7999 {
8000 struct mgmt_ev_device_disconnected ev;
8001 struct sock *sk = NULL;
8002
8003 /* The connection is still in hci_conn_hash so test for 1
8004 * instead of 0 to know if this is the last one.
8005 */
8006 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8007 cancel_delayed_work(&hdev->power_off);
8008 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8009 }
8010
8011 if (!mgmt_connected)
8012 return;
8013
8014 if (link_type != ACL_LINK && link_type != LE_LINK)
8015 return;
8016
8017 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
8018
8019 bacpy(&ev.addr.bdaddr, bdaddr);
8020 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8021 ev.reason = reason;
8022
8023 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
8024
8025 if (sk)
8026 sock_put(sk);
8027
8028 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8029 hdev);
8030 }
8031
8032 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
8033 u8 link_type, u8 addr_type, u8 status)
8034 {
8035 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
8036 struct mgmt_cp_disconnect *cp;
8037 struct mgmt_pending_cmd *cmd;
8038
8039 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8040 hdev);
8041
8042 cmd = pending_find(MGMT_OP_DISCONNECT, hdev);
8043 if (!cmd)
8044 return;
8045
8046 cp = cmd->param;
8047
8048 if (bacmp(bdaddr, &cp->addr.bdaddr))
8049 return;
8050
8051 if (cp->addr.type != bdaddr_type)
8052 return;
8053
8054 cmd->cmd_complete(cmd, mgmt_status(status));
8055 mgmt_pending_remove(cmd);
8056 }
8057
8058 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8059 u8 addr_type, u8 status)
8060 {
8061 struct mgmt_ev_connect_failed ev;
8062
8063 /* The connection is still in hci_conn_hash so test for 1
8064 * instead of 0 to know if this is the last one.
8065 */
8066 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8067 cancel_delayed_work(&hdev->power_off);
8068 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8069 }
8070
8071 bacpy(&ev.addr.bdaddr, bdaddr);
8072 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8073 ev.status = mgmt_status(status);
8074
8075 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
8076 }
8077
8078 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
8079 {
8080 struct mgmt_ev_pin_code_request ev;
8081
8082 bacpy(&ev.addr.bdaddr, bdaddr);
8083 ev.addr.type = BDADDR_BREDR;
8084 ev.secure = secure;
8085
8086 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
8087 }
8088
8089 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8090 u8 status)
8091 {
8092 struct mgmt_pending_cmd *cmd;
8093
8094 cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
8095 if (!cmd)
8096 return;
8097
8098 cmd->cmd_complete(cmd, mgmt_status(status));
8099 mgmt_pending_remove(cmd);
8100 }
8101
8102 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8103 u8 status)
8104 {
8105 struct mgmt_pending_cmd *cmd;
8106
8107 cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
8108 if (!cmd)
8109 return;
8110
8111 cmd->cmd_complete(cmd, mgmt_status(status));
8112 mgmt_pending_remove(cmd);
8113 }
8114
8115 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8116 u8 link_type, u8 addr_type, u32 value,
8117 u8 confirm_hint)
8118 {
8119 struct mgmt_ev_user_confirm_request ev;
8120
8121 BT_DBG("%s", hdev->name);
8122
8123 bacpy(&ev.addr.bdaddr, bdaddr);
8124 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8125 ev.confirm_hint = confirm_hint;
8126 ev.value = cpu_to_le32(value);
8127
8128 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
8129 NULL);
8130 }
8131
8132 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8133 u8 link_type, u8 addr_type)
8134 {
8135 struct mgmt_ev_user_passkey_request ev;
8136
8137 BT_DBG("%s", hdev->name);
8138
8139 bacpy(&ev.addr.bdaddr, bdaddr);
8140 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8141
8142 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
8143 NULL);
8144 }
8145
8146 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8147 u8 link_type, u8 addr_type, u8 status,
8148 u8 opcode)
8149 {
8150 struct mgmt_pending_cmd *cmd;
8151
8152 cmd = pending_find(opcode, hdev);
8153 if (!cmd)
8154 return -ENOENT;
8155
8156 cmd->cmd_complete(cmd, mgmt_status(status));
8157 mgmt_pending_remove(cmd);
8158
8159 return 0;
8160 }
8161
8162 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8163 u8 link_type, u8 addr_type, u8 status)
8164 {
8165 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8166 status, MGMT_OP_USER_CONFIRM_REPLY);
8167 }
8168
8169 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8170 u8 link_type, u8 addr_type, u8 status)
8171 {
8172 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8173 status,
8174 MGMT_OP_USER_CONFIRM_NEG_REPLY);
8175 }
8176
8177 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8178 u8 link_type, u8 addr_type, u8 status)
8179 {
8180 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8181 status, MGMT_OP_USER_PASSKEY_REPLY);
8182 }
8183
8184 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8185 u8 link_type, u8 addr_type, u8 status)
8186 {
8187 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8188 status,
8189 MGMT_OP_USER_PASSKEY_NEG_REPLY);
8190 }
8191
8192 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
8193 u8 link_type, u8 addr_type, u32 passkey,
8194 u8 entered)
8195 {
8196 struct mgmt_ev_passkey_notify ev;
8197
8198 BT_DBG("%s", hdev->name);
8199
8200 bacpy(&ev.addr.bdaddr, bdaddr);
8201 ev.addr.type = link_to_bdaddr(link_type, addr_type);
8202 ev.passkey = __cpu_to_le32(passkey);
8203 ev.entered = entered;
8204
8205 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
8206 }
8207
8208 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
8209 {
8210 struct mgmt_ev_auth_failed ev;
8211 struct mgmt_pending_cmd *cmd;
8212 u8 status = mgmt_status(hci_status);
8213
8214 bacpy(&ev.addr.bdaddr, &conn->dst);
8215 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
8216 ev.status = status;
8217
8218 cmd = find_pairing(conn);
8219
8220 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
8221 cmd ? cmd->sk : NULL);
8222
8223 if (cmd) {
8224 cmd->cmd_complete(cmd, status);
8225 mgmt_pending_remove(cmd);
8226 }
8227 }
8228
8229 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
8230 {
8231 struct cmd_lookup match = { NULL, hdev };
8232 bool changed;
8233
8234 if (status) {
8235 u8 mgmt_err = mgmt_status(status);
8236 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
8237 cmd_status_rsp, &mgmt_err);
8238 return;
8239 }
8240
8241 if (test_bit(HCI_AUTH, &hdev->flags))
8242 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
8243 else
8244 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
8245
8246 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
8247 &match);
8248
8249 if (changed)
8250 new_settings(hdev, match.sk);
8251
8252 if (match.sk)
8253 sock_put(match.sk);
8254 }
8255
8256 static void clear_eir(struct hci_request *req)
8257 {
8258 struct hci_dev *hdev = req->hdev;
8259 struct hci_cp_write_eir cp;
8260
8261 if (!lmp_ext_inq_capable(hdev))
8262 return;
8263
8264 memset(hdev->eir, 0, sizeof(hdev->eir));
8265
8266 memset(&cp, 0, sizeof(cp));
8267
8268 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
8269 }
8270
8271 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
8272 {
8273 struct cmd_lookup match = { NULL, hdev };
8274 struct hci_request req;
8275 bool changed = false;
8276
8277 if (status) {
8278 u8 mgmt_err = mgmt_status(status);
8279
8280 if (enable && hci_dev_test_and_clear_flag(hdev,
8281 HCI_SSP_ENABLED)) {
8282 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8283 new_settings(hdev, NULL);
8284 }
8285
8286 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
8287 &mgmt_err);
8288 return;
8289 }
8290
8291 if (enable) {
8292 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
8293 } else {
8294 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
8295 if (!changed)
8296 changed = hci_dev_test_and_clear_flag(hdev,
8297 HCI_HS_ENABLED);
8298 else
8299 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8300 }
8301
8302 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
8303
8304 if (changed)
8305 new_settings(hdev, match.sk);
8306
8307 if (match.sk)
8308 sock_put(match.sk);
8309
8310 hci_req_init(&req, hdev);
8311
8312 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
8313 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
8314 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
8315 sizeof(enable), &enable);
8316 update_eir(&req);
8317 } else {
8318 clear_eir(&req);
8319 }
8320
8321 hci_req_run(&req, NULL);
8322 }
8323
8324 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data)
8325 {
8326 struct cmd_lookup *match = data;
8327
8328 if (match->sk == NULL) {
8329 match->sk = cmd->sk;
8330 sock_hold(match->sk);
8331 }
8332 }
8333
8334 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
8335 u8 status)
8336 {
8337 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
8338
8339 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
8340 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
8341 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
8342
8343 if (!status)
8344 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
8345 dev_class, 3, NULL);
8346
8347 if (match.sk)
8348 sock_put(match.sk);
8349 }
8350
8351 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
8352 {
8353 struct mgmt_cp_set_local_name ev;
8354 struct mgmt_pending_cmd *cmd;
8355
8356 if (status)
8357 return;
8358
8359 memset(&ev, 0, sizeof(ev));
8360 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
8361 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
8362
8363 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
8364 if (!cmd) {
8365 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
8366
8367 /* If this is a HCI command related to powering on the
8368 * HCI dev don't send any mgmt signals.
8369 */
8370 if (pending_find(MGMT_OP_SET_POWERED, hdev))
8371 return;
8372 }
8373
8374 mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
8375 cmd ? cmd->sk : NULL);
8376 }
8377
8378 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
8379 {
8380 int i;
8381
8382 for (i = 0; i < uuid_count; i++) {
8383 if (!memcmp(uuid, uuids[i], 16))
8384 return true;
8385 }
8386
8387 return false;
8388 }
8389
8390 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
8391 {
8392 u16 parsed = 0;
8393
8394 while (parsed < eir_len) {
8395 u8 field_len = eir[0];
8396 u8 uuid[16];
8397 int i;
8398
8399 if (field_len == 0)
8400 break;
8401
8402 if (eir_len - parsed < field_len + 1)
8403 break;
8404
8405 switch (eir[1]) {
8406 case EIR_UUID16_ALL:
8407 case EIR_UUID16_SOME:
8408 for (i = 0; i + 3 <= field_len; i += 2) {
8409 memcpy(uuid, bluetooth_base_uuid, 16);
8410 uuid[13] = eir[i + 3];
8411 uuid[12] = eir[i + 2];
8412 if (has_uuid(uuid, uuid_count, uuids))
8413 return true;
8414 }
8415 break;
8416 case EIR_UUID32_ALL:
8417 case EIR_UUID32_SOME:
8418 for (i = 0; i + 5 <= field_len; i += 4) {
8419 memcpy(uuid, bluetooth_base_uuid, 16);
8420 uuid[15] = eir[i + 5];
8421 uuid[14] = eir[i + 4];
8422 uuid[13] = eir[i + 3];
8423 uuid[12] = eir[i + 2];
8424 if (has_uuid(uuid, uuid_count, uuids))
8425 return true;
8426 }
8427 break;
8428 case EIR_UUID128_ALL:
8429 case EIR_UUID128_SOME:
8430 for (i = 0; i + 17 <= field_len; i += 16) {
8431 memcpy(uuid, eir + i + 2, 16);
8432 if (has_uuid(uuid, uuid_count, uuids))
8433 return true;
8434 }
8435 break;
8436 }
8437
8438 parsed += field_len + 1;
8439 eir += field_len + 1;
8440 }
8441
8442 return false;
8443 }
8444
8445 static void restart_le_scan(struct hci_dev *hdev)
8446 {
8447 /* If controller is not scanning we are done. */
8448 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
8449 return;
8450
8451 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
8452 hdev->discovery.scan_start +
8453 hdev->discovery.scan_duration))
8454 return;
8455
8456 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
8457 DISCOV_LE_RESTART_DELAY);
8458 }
8459
8460 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir,
8461 u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8462 {
8463 /* If a RSSI threshold has been specified, and
8464 * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with
8465 * a RSSI smaller than the RSSI threshold will be dropped. If the quirk
8466 * is set, let it through for further processing, as we might need to
8467 * restart the scan.
8468 *
8469 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
8470 * the results are also dropped.
8471 */
8472 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8473 (rssi == HCI_RSSI_INVALID ||
8474 (rssi < hdev->discovery.rssi &&
8475 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
8476 return false;
8477
8478 if (hdev->discovery.uuid_count != 0) {
8479 /* If a list of UUIDs is provided in filter, results with no
8480 * matching UUID should be dropped.
8481 */
8482 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count,
8483 hdev->discovery.uuids) &&
8484 !eir_has_uuids(scan_rsp, scan_rsp_len,
8485 hdev->discovery.uuid_count,
8486 hdev->discovery.uuids))
8487 return false;
8488 }
8489
8490 /* If duplicate filtering does not report RSSI changes, then restart
8491 * scanning to ensure updated result with updated RSSI values.
8492 */
8493 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) {
8494 restart_le_scan(hdev);
8495
8496 /* Validate RSSI value against the RSSI threshold once more. */
8497 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8498 rssi < hdev->discovery.rssi)
8499 return false;
8500 }
8501
8502 return true;
8503 }
8504
8505 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
8507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8508 {
8509 char buf[512];
8510 struct mgmt_ev_device_found *ev = (void *)buf;
8511 size_t ev_size;
8512
8513 /* Don't send events for a non-kernel initiated discovery. With
8514 * LE one exception is if we have pend_le_reports > 0 in which
8515 * case we're doing passive scanning and want these events.
8516 */
8517 if (!hci_discovery_active(hdev)) {
8518 if (link_type == ACL_LINK)
8519 return;
8520 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
8521 return;
8522 }
8523
8524 if (hdev->discovery.result_filtering) {
8525 /* We are using service discovery */
8526 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp,
8527 scan_rsp_len))
8528 return;
8529 }
8530
8531 /* Make sure that the buffer is big enough. The 5 extra bytes
8532 * are for the potential CoD field.
8533 */
8534 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
8535 return;
8536
8537 memset(buf, 0, sizeof(buf));
8538
8539 /* In case of device discovery with BR/EDR devices (pre 1.2), the
8540 * RSSI value was reported as 0 when not available. This behavior
8541 * is kept when using device discovery. This is required for full
8542 * backwards compatibility with the API.
8543 *
8544 * However when using service discovery, the value 127 will be
8545 * returned when the RSSI is not available.
8546 */
8547 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
8548 link_type == ACL_LINK)
8549 rssi = 0;
8550
8551 bacpy(&ev->addr.bdaddr, bdaddr);
8552 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8553 ev->rssi = rssi;
8554 ev->flags = cpu_to_le32(flags);
8555
8556 if (eir_len > 0)
8557 /* Copy EIR or advertising data into event */
8558 memcpy(ev->eir, eir, eir_len);
8559
8560 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
8561 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
8562 dev_class, 3);
8563
8564 if (scan_rsp_len > 0)
8565 /* Append scan response data to event */
8566 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
8567
8568 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
8569 ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
8570
8571 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
8572 }
8573
8574 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8575 u8 addr_type, s8 rssi, u8 *name, u8 name_len)
8576 {
8577 struct mgmt_ev_device_found *ev;
8578 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
8579 u16 eir_len;
8580
8581 ev = (struct mgmt_ev_device_found *) buf;
8582
8583 memset(buf, 0, sizeof(buf));
8584
8585 bacpy(&ev->addr.bdaddr, bdaddr);
8586 ev->addr.type = link_to_bdaddr(link_type, addr_type);
8587 ev->rssi = rssi;
8588
8589 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
8590 name_len);
8591
8592 ev->eir_len = cpu_to_le16(eir_len);
8593
8594 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
8595 }
8596
8597 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
8598 {
8599 struct mgmt_ev_discovering ev;
8600
8601 BT_DBG("%s discovering %u", hdev->name, discovering);
8602
8603 memset(&ev, 0, sizeof(ev));
8604 ev.type = hdev->discovery.type;
8605 ev.discovering = discovering;
8606
8607 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
8608 }
8609
8610 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
8611 {
8612 BT_DBG("%s status %u", hdev->name, status);
8613 }
8614
8615 void mgmt_reenable_advertising(struct hci_dev *hdev)
8616 {
8617 struct hci_request req;
8618 u8 instance;
8619
8620 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
8621 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
8622 return;
8623
8624 instance = get_current_adv_instance(hdev);
8625
8626 hci_req_init(&req, hdev);
8627
8628 if (instance) {
8629 schedule_adv_instance(&req, instance, true);
8630 } else {
8631 update_adv_data(&req);
8632 update_scan_rsp_data(&req);
8633 enable_advertising(&req);
8634 }
8635
8636 hci_req_run(&req, adv_enable_complete);
8637 }
8638
8639 static struct hci_mgmt_chan chan = {
8640 .channel = HCI_CHANNEL_CONTROL,
8641 .handler_count = ARRAY_SIZE(mgmt_handlers),
8642 .handlers = mgmt_handlers,
8643 .hdev_init = mgmt_init_hdev,
8644 };
8645
8646 int mgmt_init(void)
8647 {
8648 return hci_mgmt_chan_register(&chan);
8649 }
8650
8651 void mgmt_exit(void)
8652 {
8653 hci_mgmt_chan_unregister(&chan);
8654 }
Linux with added FPC-III support