?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
powerpc/perf: Fix book3s kernel to userspace backtraces
[linux/fpc-iii.git] / net / bluetooth / mgmt.c
blob9ec5390c85eba61c3c3bcb5a813c8d8af326cf33
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/l2cap.h>
33 #include <net/bluetooth/mgmt.h>
34
35 #include "hci_request.h"
36 #include "smp.h"
37
38 #define MGMT_VERSION 1
39 #define MGMT_REVISION 8
40
41 static const u16 mgmt_commands[] = {
42 MGMT_OP_READ_INDEX_LIST,
43 MGMT_OP_READ_INFO,
44 MGMT_OP_SET_POWERED,
45 MGMT_OP_SET_DISCOVERABLE,
46 MGMT_OP_SET_CONNECTABLE,
47 MGMT_OP_SET_FAST_CONNECTABLE,
48 MGMT_OP_SET_BONDABLE,
49 MGMT_OP_SET_LINK_SECURITY,
50 MGMT_OP_SET_SSP,
51 MGMT_OP_SET_HS,
52 MGMT_OP_SET_LE,
53 MGMT_OP_SET_DEV_CLASS,
54 MGMT_OP_SET_LOCAL_NAME,
55 MGMT_OP_ADD_UUID,
56 MGMT_OP_REMOVE_UUID,
57 MGMT_OP_LOAD_LINK_KEYS,
58 MGMT_OP_LOAD_LONG_TERM_KEYS,
59 MGMT_OP_DISCONNECT,
60 MGMT_OP_GET_CONNECTIONS,
61 MGMT_OP_PIN_CODE_REPLY,
62 MGMT_OP_PIN_CODE_NEG_REPLY,
63 MGMT_OP_SET_IO_CAPABILITY,
64 MGMT_OP_PAIR_DEVICE,
65 MGMT_OP_CANCEL_PAIR_DEVICE,
66 MGMT_OP_UNPAIR_DEVICE,
67 MGMT_OP_USER_CONFIRM_REPLY,
68 MGMT_OP_USER_CONFIRM_NEG_REPLY,
69 MGMT_OP_USER_PASSKEY_REPLY,
70 MGMT_OP_USER_PASSKEY_NEG_REPLY,
71 MGMT_OP_READ_LOCAL_OOB_DATA,
72 MGMT_OP_ADD_REMOTE_OOB_DATA,
73 MGMT_OP_REMOVE_REMOTE_OOB_DATA,
74 MGMT_OP_START_DISCOVERY,
75 MGMT_OP_STOP_DISCOVERY,
76 MGMT_OP_CONFIRM_NAME,
77 MGMT_OP_BLOCK_DEVICE,
78 MGMT_OP_UNBLOCK_DEVICE,
79 MGMT_OP_SET_DEVICE_ID,
80 MGMT_OP_SET_ADVERTISING,
81 MGMT_OP_SET_BREDR,
82 MGMT_OP_SET_STATIC_ADDRESS,
83 MGMT_OP_SET_SCAN_PARAMS,
84 MGMT_OP_SET_SECURE_CONN,
85 MGMT_OP_SET_DEBUG_KEYS,
86 MGMT_OP_SET_PRIVACY,
87 MGMT_OP_LOAD_IRKS,
88 MGMT_OP_GET_CONN_INFO,
89 MGMT_OP_GET_CLOCK_INFO,
90 MGMT_OP_ADD_DEVICE,
91 MGMT_OP_REMOVE_DEVICE,
92 MGMT_OP_LOAD_CONN_PARAM,
93 MGMT_OP_READ_UNCONF_INDEX_LIST,
94 MGMT_OP_READ_CONFIG_INFO,
95 MGMT_OP_SET_EXTERNAL_CONFIG,
96 MGMT_OP_SET_PUBLIC_ADDRESS,
97 MGMT_OP_START_SERVICE_DISCOVERY,
98 };
99
100 static const u16 mgmt_events[] = {
101 MGMT_EV_CONTROLLER_ERROR,
102 MGMT_EV_INDEX_ADDED,
103 MGMT_EV_INDEX_REMOVED,
104 MGMT_EV_NEW_SETTINGS,
105 MGMT_EV_CLASS_OF_DEV_CHANGED,
106 MGMT_EV_LOCAL_NAME_CHANGED,
107 MGMT_EV_NEW_LINK_KEY,
108 MGMT_EV_NEW_LONG_TERM_KEY,
109 MGMT_EV_DEVICE_CONNECTED,
110 MGMT_EV_DEVICE_DISCONNECTED,
111 MGMT_EV_CONNECT_FAILED,
112 MGMT_EV_PIN_CODE_REQUEST,
113 MGMT_EV_USER_CONFIRM_REQUEST,
114 MGMT_EV_USER_PASSKEY_REQUEST,
115 MGMT_EV_AUTH_FAILED,
116 MGMT_EV_DEVICE_FOUND,
117 MGMT_EV_DISCOVERING,
118 MGMT_EV_DEVICE_BLOCKED,
119 MGMT_EV_DEVICE_UNBLOCKED,
120 MGMT_EV_DEVICE_UNPAIRED,
121 MGMT_EV_PASSKEY_NOTIFY,
122 MGMT_EV_NEW_IRK,
123 MGMT_EV_NEW_CSRK,
124 MGMT_EV_DEVICE_ADDED,
125 MGMT_EV_DEVICE_REMOVED,
126 MGMT_EV_NEW_CONN_PARAM,
127 MGMT_EV_UNCONF_INDEX_ADDED,
128 MGMT_EV_UNCONF_INDEX_REMOVED,
129 MGMT_EV_NEW_CONFIG_OPTIONS,
130 };
131
132 #define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
133
134 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
135 "\x00\x00\x00\x00\x00\x00\x00\x00"
136
137 struct pending_cmd {
138 struct list_head list;
139 u16 opcode;
140 int index;
141 void *param;
142 size_t param_len;
143 struct sock *sk;
144 void *user_data;
145 int (*cmd_complete)(struct pending_cmd *cmd, u8 status);
146 };
147
148 /* HCI to MGMT error code conversion table */
149 static u8 mgmt_status_table[] = {
150 MGMT_STATUS_SUCCESS,
151 MGMT_STATUS_UNKNOWN_COMMAND, /* Unknown Command */
152 MGMT_STATUS_NOT_CONNECTED, /* No Connection */
153 MGMT_STATUS_FAILED, /* Hardware Failure */
154 MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */
155 MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */
156 MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */
157 MGMT_STATUS_NO_RESOURCES, /* Memory Full */
158 MGMT_STATUS_TIMEOUT, /* Connection Timeout */
159 MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */
160 MGMT_STATUS_NO_RESOURCES, /* Max Number of SCO Connections */
161 MGMT_STATUS_ALREADY_CONNECTED, /* ACL Connection Exists */
162 MGMT_STATUS_BUSY, /* Command Disallowed */
163 MGMT_STATUS_NO_RESOURCES, /* Rejected Limited Resources */
164 MGMT_STATUS_REJECTED, /* Rejected Security */
165 MGMT_STATUS_REJECTED, /* Rejected Personal */
166 MGMT_STATUS_TIMEOUT, /* Host Timeout */
167 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Feature */
168 MGMT_STATUS_INVALID_PARAMS, /* Invalid Parameters */
169 MGMT_STATUS_DISCONNECTED, /* OE User Ended Connection */
170 MGMT_STATUS_NO_RESOURCES, /* OE Low Resources */
171 MGMT_STATUS_DISCONNECTED, /* OE Power Off */
172 MGMT_STATUS_DISCONNECTED, /* Connection Terminated */
173 MGMT_STATUS_BUSY, /* Repeated Attempts */
174 MGMT_STATUS_REJECTED, /* Pairing Not Allowed */
175 MGMT_STATUS_FAILED, /* Unknown LMP PDU */
176 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Remote Feature */
177 MGMT_STATUS_REJECTED, /* SCO Offset Rejected */
178 MGMT_STATUS_REJECTED, /* SCO Interval Rejected */
179 MGMT_STATUS_REJECTED, /* Air Mode Rejected */
180 MGMT_STATUS_INVALID_PARAMS, /* Invalid LMP Parameters */
181 MGMT_STATUS_FAILED, /* Unspecified Error */
182 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported LMP Parameter Value */
183 MGMT_STATUS_FAILED, /* Role Change Not Allowed */
184 MGMT_STATUS_TIMEOUT, /* LMP Response Timeout */
185 MGMT_STATUS_FAILED, /* LMP Error Transaction Collision */
186 MGMT_STATUS_FAILED, /* LMP PDU Not Allowed */
187 MGMT_STATUS_REJECTED, /* Encryption Mode Not Accepted */
188 MGMT_STATUS_FAILED, /* Unit Link Key Used */
189 MGMT_STATUS_NOT_SUPPORTED, /* QoS Not Supported */
190 MGMT_STATUS_TIMEOUT, /* Instant Passed */
191 MGMT_STATUS_NOT_SUPPORTED, /* Pairing Not Supported */
192 MGMT_STATUS_FAILED, /* Transaction Collision */
193 MGMT_STATUS_INVALID_PARAMS, /* Unacceptable Parameter */
194 MGMT_STATUS_REJECTED, /* QoS Rejected */
195 MGMT_STATUS_NOT_SUPPORTED, /* Classification Not Supported */
196 MGMT_STATUS_REJECTED, /* Insufficient Security */
197 MGMT_STATUS_INVALID_PARAMS, /* Parameter Out Of Range */
198 MGMT_STATUS_BUSY, /* Role Switch Pending */
199 MGMT_STATUS_FAILED, /* Slot Violation */
200 MGMT_STATUS_FAILED, /* Role Switch Failed */
201 MGMT_STATUS_INVALID_PARAMS, /* EIR Too Large */
202 MGMT_STATUS_NOT_SUPPORTED, /* Simple Pairing Not Supported */
203 MGMT_STATUS_BUSY, /* Host Busy Pairing */
204 MGMT_STATUS_REJECTED, /* Rejected, No Suitable Channel */
205 MGMT_STATUS_BUSY, /* Controller Busy */
206 MGMT_STATUS_INVALID_PARAMS, /* Unsuitable Connection Interval */
207 MGMT_STATUS_TIMEOUT, /* Directed Advertising Timeout */
208 MGMT_STATUS_AUTH_FAILED, /* Terminated Due to MIC Failure */
209 MGMT_STATUS_CONNECT_FAILED, /* Connection Establishment Failed */
210 MGMT_STATUS_CONNECT_FAILED, /* MAC Connection Failed */
211 };
212
213 static u8 mgmt_status(u8 hci_status)
214 {
215 if (hci_status < ARRAY_SIZE(mgmt_status_table))
216 return mgmt_status_table[hci_status];
217
218 return MGMT_STATUS_FAILED;
219 }
220
221 static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 data_len,
222 struct sock *skip_sk)
223 {
224 struct sk_buff *skb;
225 struct mgmt_hdr *hdr;
226
227 skb = alloc_skb(sizeof(*hdr) + data_len, GFP_KERNEL);
228 if (!skb)
229 return -ENOMEM;
230
231 hdr = (void *) skb_put(skb, sizeof(*hdr));
232 hdr->opcode = cpu_to_le16(event);
233 if (hdev)
234 hdr->index = cpu_to_le16(hdev->id);
235 else
236 hdr->index = cpu_to_le16(MGMT_INDEX_NONE);
237 hdr->len = cpu_to_le16(data_len);
238
239 if (data)
240 memcpy(skb_put(skb, data_len), data, data_len);
241
242 /* Time stamp */
243 __net_timestamp(skb);
244
245 hci_send_to_control(skb, skip_sk);
246 kfree_skb(skb);
247
248 return 0;
249 }
250
251 static int cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
252 {
253 struct sk_buff *skb;
254 struct mgmt_hdr *hdr;
255 struct mgmt_ev_cmd_status *ev;
256 int err;
257
258 BT_DBG("sock %p, index %u, cmd %u, status %u", sk, index, cmd, status);
259
260 skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL);
261 if (!skb)
262 return -ENOMEM;
263
264 hdr = (void *) skb_put(skb, sizeof(*hdr));
265
266 hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
267 hdr->index = cpu_to_le16(index);
268 hdr->len = cpu_to_le16(sizeof(*ev));
269
270 ev = (void *) skb_put(skb, sizeof(*ev));
271 ev->status = status;
272 ev->opcode = cpu_to_le16(cmd);
273
274 err = sock_queue_rcv_skb(sk, skb);
275 if (err < 0)
276 kfree_skb(skb);
277
278 return err;
279 }
280
281 static int cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
282 void *rp, size_t rp_len)
283 {
284 struct sk_buff *skb;
285 struct mgmt_hdr *hdr;
286 struct mgmt_ev_cmd_complete *ev;
287 int err;
288
289 BT_DBG("sock %p", sk);
290
291 skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + rp_len, GFP_KERNEL);
292 if (!skb)
293 return -ENOMEM;
294
295 hdr = (void *) skb_put(skb, sizeof(*hdr));
296
297 hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
298 hdr->index = cpu_to_le16(index);
299 hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
300
301 ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
302 ev->opcode = cpu_to_le16(cmd);
303 ev->status = status;
304
305 if (rp)
306 memcpy(ev->data, rp, rp_len);
307
308 err = sock_queue_rcv_skb(sk, skb);
309 if (err < 0)
310 kfree_skb(skb);
311
312 return err;
313 }
314
315 static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
316 u16 data_len)
317 {
318 struct mgmt_rp_read_version rp;
319
320 BT_DBG("sock %p", sk);
321
322 rp.version = MGMT_VERSION;
323 rp.revision = cpu_to_le16(MGMT_REVISION);
324
325 return cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0, &rp,
326 sizeof(rp));
327 }
328
329 static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
330 u16 data_len)
331 {
332 struct mgmt_rp_read_commands *rp;
333 const u16 num_commands = ARRAY_SIZE(mgmt_commands);
334 const u16 num_events = ARRAY_SIZE(mgmt_events);
335 __le16 *opcode;
336 size_t rp_size;
337 int i, err;
338
339 BT_DBG("sock %p", sk);
340
341 rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));
342
343 rp = kmalloc(rp_size, GFP_KERNEL);
344 if (!rp)
345 return -ENOMEM;
346
347 rp->num_commands = cpu_to_le16(num_commands);
348 rp->num_events = cpu_to_le16(num_events);
349
350 for (i = 0, opcode = rp->opcodes; i < num_commands; i++, opcode++)
351 put_unaligned_le16(mgmt_commands[i], opcode);
352
353 for (i = 0; i < num_events; i++, opcode++)
354 put_unaligned_le16(mgmt_events[i], opcode);
355
356 err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0, rp,
357 rp_size);
358 kfree(rp);
359
360 return err;
361 }
362
363 static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
364 u16 data_len)
365 {
366 struct mgmt_rp_read_index_list *rp;
367 struct hci_dev *d;
368 size_t rp_len;
369 u16 count;
370 int err;
371
372 BT_DBG("sock %p", sk);
373
374 read_lock(&hci_dev_list_lock);
375
376 count = 0;
377 list_for_each_entry(d, &hci_dev_list, list) {
378 if (d->dev_type == HCI_BREDR &&
379 !test_bit(HCI_UNCONFIGURED, &d->dev_flags))
380 count++;
381 }
382
383 rp_len = sizeof(*rp) + (2 * count);
384 rp = kmalloc(rp_len, GFP_ATOMIC);
385 if (!rp) {
386 read_unlock(&hci_dev_list_lock);
387 return -ENOMEM;
388 }
389
390 count = 0;
391 list_for_each_entry(d, &hci_dev_list, list) {
392 if (test_bit(HCI_SETUP, &d->dev_flags) ||
393 test_bit(HCI_CONFIG, &d->dev_flags) ||
394 test_bit(HCI_USER_CHANNEL, &d->dev_flags))
395 continue;
396
397 /* Devices marked as raw-only are neither configured
398 * nor unconfigured controllers.
399 */
400 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
401 continue;
402
403 if (d->dev_type == HCI_BREDR &&
404 !test_bit(HCI_UNCONFIGURED, &d->dev_flags)) {
405 rp->index[count++] = cpu_to_le16(d->id);
406 BT_DBG("Added hci%u", d->id);
407 }
408 }
409
410 rp->num_controllers = cpu_to_le16(count);
411 rp_len = sizeof(*rp) + (2 * count);
412
413 read_unlock(&hci_dev_list_lock);
414
415 err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST, 0, rp,
416 rp_len);
417
418 kfree(rp);
419
420 return err;
421 }
422
423 static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev,
424 void *data, u16 data_len)
425 {
426 struct mgmt_rp_read_unconf_index_list *rp;
427 struct hci_dev *d;
428 size_t rp_len;
429 u16 count;
430 int err;
431
432 BT_DBG("sock %p", sk);
433
434 read_lock(&hci_dev_list_lock);
435
436 count = 0;
437 list_for_each_entry(d, &hci_dev_list, list) {
438 if (d->dev_type == HCI_BREDR &&
439 test_bit(HCI_UNCONFIGURED, &d->dev_flags))
440 count++;
441 }
442
443 rp_len = sizeof(*rp) + (2 * count);
444 rp = kmalloc(rp_len, GFP_ATOMIC);
445 if (!rp) {
446 read_unlock(&hci_dev_list_lock);
447 return -ENOMEM;
448 }
449
450 count = 0;
451 list_for_each_entry(d, &hci_dev_list, list) {
452 if (test_bit(HCI_SETUP, &d->dev_flags) ||
453 test_bit(HCI_CONFIG, &d->dev_flags) ||
454 test_bit(HCI_USER_CHANNEL, &d->dev_flags))
455 continue;
456
457 /* Devices marked as raw-only are neither configured
458 * nor unconfigured controllers.
459 */
460 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
461 continue;
462
463 if (d->dev_type == HCI_BREDR &&
464 test_bit(HCI_UNCONFIGURED, &d->dev_flags)) {
465 rp->index[count++] = cpu_to_le16(d->id);
466 BT_DBG("Added hci%u", d->id);
467 }
468 }
469
470 rp->num_controllers = cpu_to_le16(count);
471 rp_len = sizeof(*rp) + (2 * count);
472
473 read_unlock(&hci_dev_list_lock);
474
475 err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_UNCONF_INDEX_LIST,
476 0, rp, rp_len);
477
478 kfree(rp);
479
480 return err;
481 }
482
483 static bool is_configured(struct hci_dev *hdev)
484 {
485 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
486 !test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))
487 return false;
488
489 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
490 !bacmp(&hdev->public_addr, BDADDR_ANY))
491 return false;
492
493 return true;
494 }
495
496 static __le32 get_missing_options(struct hci_dev *hdev)
497 {
498 u32 options = 0;
499
500 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
501 !test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))
502 options |= MGMT_OPTION_EXTERNAL_CONFIG;
503
504 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
505 !bacmp(&hdev->public_addr, BDADDR_ANY))
506 options |= MGMT_OPTION_PUBLIC_ADDRESS;
507
508 return cpu_to_le32(options);
509 }
510
511 static int new_options(struct hci_dev *hdev, struct sock *skip)
512 {
513 __le32 options = get_missing_options(hdev);
514
515 return mgmt_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
516 sizeof(options), skip);
517 }
518
519 static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
520 {
521 __le32 options = get_missing_options(hdev);
522
523 return cmd_complete(sk, hdev->id, opcode, 0, &options,
524 sizeof(options));
525 }
526
527 static int read_config_info(struct sock *sk, struct hci_dev *hdev,
528 void *data, u16 data_len)
529 {
530 struct mgmt_rp_read_config_info rp;
531 u32 options = 0;
532
533 BT_DBG("sock %p %s", sk, hdev->name);
534
535 hci_dev_lock(hdev);
536
537 memset(&rp, 0, sizeof(rp));
538 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
539
540 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
541 options |= MGMT_OPTION_EXTERNAL_CONFIG;
542
543 if (hdev->set_bdaddr)
544 options |= MGMT_OPTION_PUBLIC_ADDRESS;
545
546 rp.supported_options = cpu_to_le32(options);
547 rp.missing_options = get_missing_options(hdev);
548
549 hci_dev_unlock(hdev);
550
551 return cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0, &rp,
552 sizeof(rp));
553 }
554
555 static u32 get_supported_settings(struct hci_dev *hdev)
556 {
557 u32 settings = 0;
558
559 settings |= MGMT_SETTING_POWERED;
560 settings |= MGMT_SETTING_BONDABLE;
561 settings |= MGMT_SETTING_DEBUG_KEYS;
562 settings |= MGMT_SETTING_CONNECTABLE;
563 settings |= MGMT_SETTING_DISCOVERABLE;
564
565 if (lmp_bredr_capable(hdev)) {
566 if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
567 settings |= MGMT_SETTING_FAST_CONNECTABLE;
568 settings |= MGMT_SETTING_BREDR;
569 settings |= MGMT_SETTING_LINK_SECURITY;
570
571 if (lmp_ssp_capable(hdev)) {
572 settings |= MGMT_SETTING_SSP;
573 settings |= MGMT_SETTING_HS;
574 }
575
576 if (lmp_sc_capable(hdev))
577 settings |= MGMT_SETTING_SECURE_CONN;
578 }
579
580 if (lmp_le_capable(hdev)) {
581 settings |= MGMT_SETTING_LE;
582 settings |= MGMT_SETTING_ADVERTISING;
583 settings |= MGMT_SETTING_SECURE_CONN;
584 settings |= MGMT_SETTING_PRIVACY;
585 }
586
587 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
588 hdev->set_bdaddr)
589 settings |= MGMT_SETTING_CONFIGURATION;
590
591 return settings;
592 }
593
594 static u32 get_current_settings(struct hci_dev *hdev)
595 {
596 u32 settings = 0;
597
598 if (hdev_is_powered(hdev))
599 settings |= MGMT_SETTING_POWERED;
600
601 if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
602 settings |= MGMT_SETTING_CONNECTABLE;
603
604 if (test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags))
605 settings |= MGMT_SETTING_FAST_CONNECTABLE;
606
607 if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
608 settings |= MGMT_SETTING_DISCOVERABLE;
609
610 if (test_bit(HCI_BONDABLE, &hdev->dev_flags))
611 settings |= MGMT_SETTING_BONDABLE;
612
613 if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
614 settings |= MGMT_SETTING_BREDR;
615
616 if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
617 settings |= MGMT_SETTING_LE;
618
619 if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags))
620 settings |= MGMT_SETTING_LINK_SECURITY;
621
622 if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
623 settings |= MGMT_SETTING_SSP;
624
625 if (test_bit(HCI_HS_ENABLED, &hdev->dev_flags))
626 settings |= MGMT_SETTING_HS;
627
628 if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
629 settings |= MGMT_SETTING_ADVERTISING;
630
631 if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags))
632 settings |= MGMT_SETTING_SECURE_CONN;
633
634 if (test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags))
635 settings |= MGMT_SETTING_DEBUG_KEYS;
636
637 if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
638 settings |= MGMT_SETTING_PRIVACY;
639
640 return settings;
641 }
642
643 #define PNP_INFO_SVCLASS_ID 0x1200
644
645 static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
646 {
647 u8 *ptr = data, *uuids_start = NULL;
648 struct bt_uuid *uuid;
649
650 if (len < 4)
651 return ptr;
652
653 list_for_each_entry(uuid, &hdev->uuids, list) {
654 u16 uuid16;
655
656 if (uuid->size != 16)
657 continue;
658
659 uuid16 = get_unaligned_le16(&uuid->uuid[12]);
660 if (uuid16 < 0x1100)
661 continue;
662
663 if (uuid16 == PNP_INFO_SVCLASS_ID)
664 continue;
665
666 if (!uuids_start) {
667 uuids_start = ptr;
668 uuids_start[0] = 1;
669 uuids_start[1] = EIR_UUID16_ALL;
670 ptr += 2;
671 }
672
673 /* Stop if not enough space to put next UUID */
674 if ((ptr - data) + sizeof(u16) > len) {
675 uuids_start[1] = EIR_UUID16_SOME;
676 break;
677 }
678
679 *ptr++ = (uuid16 & 0x00ff);
680 *ptr++ = (uuid16 & 0xff00) >> 8;
681 uuids_start[0] += sizeof(uuid16);
682 }
683
684 return ptr;
685 }
686
687 static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
688 {
689 u8 *ptr = data, *uuids_start = NULL;
690 struct bt_uuid *uuid;
691
692 if (len < 6)
693 return ptr;
694
695 list_for_each_entry(uuid, &hdev->uuids, list) {
696 if (uuid->size != 32)
697 continue;
698
699 if (!uuids_start) {
700 uuids_start = ptr;
701 uuids_start[0] = 1;
702 uuids_start[1] = EIR_UUID32_ALL;
703 ptr += 2;
704 }
705
706 /* Stop if not enough space to put next UUID */
707 if ((ptr - data) + sizeof(u32) > len) {
708 uuids_start[1] = EIR_UUID32_SOME;
709 break;
710 }
711
712 memcpy(ptr, &uuid->uuid[12], sizeof(u32));
713 ptr += sizeof(u32);
714 uuids_start[0] += sizeof(u32);
715 }
716
717 return ptr;
718 }
719
720 static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
721 {
722 u8 *ptr = data, *uuids_start = NULL;
723 struct bt_uuid *uuid;
724
725 if (len < 18)
726 return ptr;
727
728 list_for_each_entry(uuid, &hdev->uuids, list) {
729 if (uuid->size != 128)
730 continue;
731
732 if (!uuids_start) {
733 uuids_start = ptr;
734 uuids_start[0] = 1;
735 uuids_start[1] = EIR_UUID128_ALL;
736 ptr += 2;
737 }
738
739 /* Stop if not enough space to put next UUID */
740 if ((ptr - data) + 16 > len) {
741 uuids_start[1] = EIR_UUID128_SOME;
742 break;
743 }
744
745 memcpy(ptr, uuid->uuid, 16);
746 ptr += 16;
747 uuids_start[0] += 16;
748 }
749
750 return ptr;
751 }
752
753 static struct pending_cmd *mgmt_pending_find(u16 opcode, struct hci_dev *hdev)
754 {
755 struct pending_cmd *cmd;
756
757 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
758 if (cmd->opcode == opcode)
759 return cmd;
760 }
761
762 return NULL;
763 }
764
765 static struct pending_cmd *mgmt_pending_find_data(u16 opcode,
766 struct hci_dev *hdev,
767 const void *data)
768 {
769 struct pending_cmd *cmd;
770
771 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
772 if (cmd->user_data != data)
773 continue;
774 if (cmd->opcode == opcode)
775 return cmd;
776 }
777
778 return NULL;
779 }
780
781 static u8 create_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
782 {
783 u8 ad_len = 0;
784 size_t name_len;
785
786 name_len = strlen(hdev->dev_name);
787 if (name_len > 0) {
788 size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2;
789
790 if (name_len > max_len) {
791 name_len = max_len;
792 ptr[1] = EIR_NAME_SHORT;
793 } else
794 ptr[1] = EIR_NAME_COMPLETE;
795
796 ptr[0] = name_len + 1;
797
798 memcpy(ptr + 2, hdev->dev_name, name_len);
799
800 ad_len += (name_len + 2);
801 ptr += (name_len + 2);
802 }
803
804 return ad_len;
805 }
806
807 static void update_scan_rsp_data(struct hci_request *req)
808 {
809 struct hci_dev *hdev = req->hdev;
810 struct hci_cp_le_set_scan_rsp_data cp;
811 u8 len;
812
813 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
814 return;
815
816 memset(&cp, 0, sizeof(cp));
817
818 len = create_scan_rsp_data(hdev, cp.data);
819
820 if (hdev->scan_rsp_data_len == len &&
821 memcmp(cp.data, hdev->scan_rsp_data, len) == 0)
822 return;
823
824 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
825 hdev->scan_rsp_data_len = len;
826
827 cp.length = len;
828
829 hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
830 }
831
832 static u8 get_adv_discov_flags(struct hci_dev *hdev)
833 {
834 struct pending_cmd *cmd;
835
836 /* If there's a pending mgmt command the flags will not yet have
837 * their final values, so check for this first.
838 */
839 cmd = mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
840 if (cmd) {
841 struct mgmt_mode *cp = cmd->param;
842 if (cp->val == 0x01)
843 return LE_AD_GENERAL;
844 else if (cp->val == 0x02)
845 return LE_AD_LIMITED;
846 } else {
847 if (test_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags))
848 return LE_AD_LIMITED;
849 else if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
850 return LE_AD_GENERAL;
851 }
852
853 return 0;
854 }
855
856 static u8 create_adv_data(struct hci_dev *hdev, u8 *ptr)
857 {
858 u8 ad_len = 0, flags = 0;
859
860 flags |= get_adv_discov_flags(hdev);
861
862 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
863 flags |= LE_AD_NO_BREDR;
864
865 if (flags) {
866 BT_DBG("adv flags 0x%02x", flags);
867
868 ptr[0] = 2;
869 ptr[1] = EIR_FLAGS;
870 ptr[2] = flags;
871
872 ad_len += 3;
873 ptr += 3;
874 }
875
876 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) {
877 ptr[0] = 2;
878 ptr[1] = EIR_TX_POWER;
879 ptr[2] = (u8) hdev->adv_tx_power;
880
881 ad_len += 3;
882 ptr += 3;
883 }
884
885 return ad_len;
886 }
887
888 static void update_adv_data(struct hci_request *req)
889 {
890 struct hci_dev *hdev = req->hdev;
891 struct hci_cp_le_set_adv_data cp;
892 u8 len;
893
894 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
895 return;
896
897 memset(&cp, 0, sizeof(cp));
898
899 len = create_adv_data(hdev, cp.data);
900
901 if (hdev->adv_data_len == len &&
902 memcmp(cp.data, hdev->adv_data, len) == 0)
903 return;
904
905 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
906 hdev->adv_data_len = len;
907
908 cp.length = len;
909
910 hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
911 }
912
913 int mgmt_update_adv_data(struct hci_dev *hdev)
914 {
915 struct hci_request req;
916
917 hci_req_init(&req, hdev);
918 update_adv_data(&req);
919
920 return hci_req_run(&req, NULL);
921 }
922
923 static void create_eir(struct hci_dev *hdev, u8 *data)
924 {
925 u8 *ptr = data;
926 size_t name_len;
927
928 name_len = strlen(hdev->dev_name);
929
930 if (name_len > 0) {
931 /* EIR Data type */
932 if (name_len > 48) {
933 name_len = 48;
934 ptr[1] = EIR_NAME_SHORT;
935 } else
936 ptr[1] = EIR_NAME_COMPLETE;
937
938 /* EIR Data length */
939 ptr[0] = name_len + 1;
940
941 memcpy(ptr + 2, hdev->dev_name, name_len);
942
943 ptr += (name_len + 2);
944 }
945
946 if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
947 ptr[0] = 2;
948 ptr[1] = EIR_TX_POWER;
949 ptr[2] = (u8) hdev->inq_tx_power;
950
951 ptr += 3;
952 }
953
954 if (hdev->devid_source > 0) {
955 ptr[0] = 9;
956 ptr[1] = EIR_DEVICE_ID;
957
958 put_unaligned_le16(hdev->devid_source, ptr + 2);
959 put_unaligned_le16(hdev->devid_vendor, ptr + 4);
960 put_unaligned_le16(hdev->devid_product, ptr + 6);
961 put_unaligned_le16(hdev->devid_version, ptr + 8);
962
963 ptr += 10;
964 }
965
966 ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
967 ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
968 ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
969 }
970
971 static void update_eir(struct hci_request *req)
972 {
973 struct hci_dev *hdev = req->hdev;
974 struct hci_cp_write_eir cp;
975
976 if (!hdev_is_powered(hdev))
977 return;
978
979 if (!lmp_ext_inq_capable(hdev))
980 return;
981
982 if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
983 return;
984
985 if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
986 return;
987
988 memset(&cp, 0, sizeof(cp));
989
990 create_eir(hdev, cp.data);
991
992 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
993 return;
994
995 memcpy(hdev->eir, cp.data, sizeof(cp.data));
996
997 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
998 }
999
1000 static u8 get_service_classes(struct hci_dev *hdev)
1001 {
1002 struct bt_uuid *uuid;
1003 u8 val = 0;
1004
1005 list_for_each_entry(uuid, &hdev->uuids, list)
1006 val |= uuid->svc_hint;
1007
1008 return val;
1009 }
1010
1011 static void update_class(struct hci_request *req)
1012 {
1013 struct hci_dev *hdev = req->hdev;
1014 u8 cod[3];
1015
1016 BT_DBG("%s", hdev->name);
1017
1018 if (!hdev_is_powered(hdev))
1019 return;
1020
1021 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1022 return;
1023
1024 if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
1025 return;
1026
1027 cod[0] = hdev->minor_class;
1028 cod[1] = hdev->major_class;
1029 cod[2] = get_service_classes(hdev);
1030
1031 if (test_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags))
1032 cod[1] |= 0x20;
1033
1034 if (memcmp(cod, hdev->dev_class, 3) == 0)
1035 return;
1036
1037 hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
1038 }
1039
1040 static bool get_connectable(struct hci_dev *hdev)
1041 {
1042 struct pending_cmd *cmd;
1043
1044 /* If there's a pending mgmt command the flag will not yet have
1045 * it's final value, so check for this first.
1046 */
1047 cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
1048 if (cmd) {
1049 struct mgmt_mode *cp = cmd->param;
1050 return cp->val;
1051 }
1052
1053 return test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
1054 }
1055
1056 static void disable_advertising(struct hci_request *req)
1057 {
1058 u8 enable = 0x00;
1059
1060 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1061 }
1062
1063 static void enable_advertising(struct hci_request *req)
1064 {
1065 struct hci_dev *hdev = req->hdev;
1066 struct hci_cp_le_set_adv_param cp;
1067 u8 own_addr_type, enable = 0x01;
1068 bool connectable;
1069
1070 if (hci_conn_num(hdev, LE_LINK) > 0)
1071 return;
1072
1073 if (test_bit(HCI_LE_ADV, &hdev->dev_flags))
1074 disable_advertising(req);
1075
1076 /* Clear the HCI_LE_ADV bit temporarily so that the
1077 * hci_update_random_address knows that it's safe to go ahead
1078 * and write a new random address. The flag will be set back on
1079 * as soon as the SET_ADV_ENABLE HCI command completes.
1080 */
1081 clear_bit(HCI_LE_ADV, &hdev->dev_flags);
1082
1083 connectable = get_connectable(hdev);
1084
1085 /* Set require_privacy to true only when non-connectable
1086 * advertising is used. In that case it is fine to use a
1087 * non-resolvable private address.
1088 */
1089 if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
1090 return;
1091
1092 memset(&cp, 0, sizeof(cp));
1093 cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval);
1094 cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval);
1095 cp.type = connectable ? LE_ADV_IND : LE_ADV_NONCONN_IND;
1096 cp.own_address_type = own_addr_type;
1097 cp.channel_map = hdev->le_adv_channel_map;
1098
1099 hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
1100
1101 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1102 }
1103
1104 static void service_cache_off(struct work_struct *work)
1105 {
1106 struct hci_dev *hdev = container_of(work, struct hci_dev,
1107 service_cache.work);
1108 struct hci_request req;
1109
1110 if (!test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
1111 return;
1112
1113 hci_req_init(&req, hdev);
1114
1115 hci_dev_lock(hdev);
1116
1117 update_eir(&req);
1118 update_class(&req);
1119
1120 hci_dev_unlock(hdev);
1121
1122 hci_req_run(&req, NULL);
1123 }
1124
1125 static void rpa_expired(struct work_struct *work)
1126 {
1127 struct hci_dev *hdev = container_of(work, struct hci_dev,
1128 rpa_expired.work);
1129 struct hci_request req;
1130
1131 BT_DBG("");
1132
1133 set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
1134
1135 if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags))
1136 return;
1137
1138 /* The generation of a new RPA and programming it into the
1139 * controller happens in the enable_advertising() function.
1140 */
1141 hci_req_init(&req, hdev);
1142 enable_advertising(&req);
1143 hci_req_run(&req, NULL);
1144 }
1145
1146 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
1147 {
1148 if (test_and_set_bit(HCI_MGMT, &hdev->dev_flags))
1149 return;
1150
1151 INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
1152 INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
1153
1154 /* Non-mgmt controlled devices get this bit set
1155 * implicitly so that pairing works for them, however
1156 * for mgmt we require user-space to explicitly enable
1157 * it
1158 */
1159 clear_bit(HCI_BONDABLE, &hdev->dev_flags);
1160 }
1161
1162 static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
1163 void *data, u16 data_len)
1164 {
1165 struct mgmt_rp_read_info rp;
1166
1167 BT_DBG("sock %p %s", sk, hdev->name);
1168
1169 hci_dev_lock(hdev);
1170
1171 memset(&rp, 0, sizeof(rp));
1172
1173 bacpy(&rp.bdaddr, &hdev->bdaddr);
1174
1175 rp.version = hdev->hci_ver;
1176 rp.manufacturer = cpu_to_le16(hdev->manufacturer);
1177
1178 rp.supported_settings = cpu_to_le32(get_supported_settings(hdev));
1179 rp.current_settings = cpu_to_le32(get_current_settings(hdev));
1180
1181 memcpy(rp.dev_class, hdev->dev_class, 3);
1182
1183 memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name));
1184 memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name));
1185
1186 hci_dev_unlock(hdev);
1187
1188 return cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp,
1189 sizeof(rp));
1190 }
1191
1192 static void mgmt_pending_free(struct pending_cmd *cmd)
1193 {
1194 sock_put(cmd->sk);
1195 kfree(cmd->param);
1196 kfree(cmd);
1197 }
1198
1199 static struct pending_cmd *mgmt_pending_add(struct sock *sk, u16 opcode,
1200 struct hci_dev *hdev, void *data,
1201 u16 len)
1202 {
1203 struct pending_cmd *cmd;
1204
1205 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1206 if (!cmd)
1207 return NULL;
1208
1209 cmd->opcode = opcode;
1210 cmd->index = hdev->id;
1211
1212 cmd->param = kmemdup(data, len, GFP_KERNEL);
1213 if (!cmd->param) {
1214 kfree(cmd);
1215 return NULL;
1216 }
1217
1218 cmd->param_len = len;
1219
1220 cmd->sk = sk;
1221 sock_hold(sk);
1222
1223 list_add(&cmd->list, &hdev->mgmt_pending);
1224
1225 return cmd;
1226 }
1227
1228 static void mgmt_pending_foreach(u16 opcode, struct hci_dev *hdev,
1229 void (*cb)(struct pending_cmd *cmd,
1230 void *data),
1231 void *data)
1232 {
1233 struct pending_cmd *cmd, *tmp;
1234
1235 list_for_each_entry_safe(cmd, tmp, &hdev->mgmt_pending, list) {
1236 if (opcode > 0 && cmd->opcode != opcode)
1237 continue;
1238
1239 cb(cmd, data);
1240 }
1241 }
1242
1243 static void mgmt_pending_remove(struct pending_cmd *cmd)
1244 {
1245 list_del(&cmd->list);
1246 mgmt_pending_free(cmd);
1247 }
1248
1249 static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
1250 {
1251 __le32 settings = cpu_to_le32(get_current_settings(hdev));
1252
1253 return cmd_complete(sk, hdev->id, opcode, 0, &settings,
1254 sizeof(settings));
1255 }
1256
1257 static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode)
1258 {
1259 BT_DBG("%s status 0x%02x", hdev->name, status);
1260
1261 if (hci_conn_count(hdev) == 0) {
1262 cancel_delayed_work(&hdev->power_off);
1263 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1264 }
1265 }
1266
1267 static bool hci_stop_discovery(struct hci_request *req)
1268 {
1269 struct hci_dev *hdev = req->hdev;
1270 struct hci_cp_remote_name_req_cancel cp;
1271 struct inquiry_entry *e;
1272
1273 switch (hdev->discovery.state) {
1274 case DISCOVERY_FINDING:
1275 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
1276 hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
1277 } else {
1278 cancel_delayed_work(&hdev->le_scan_disable);
1279 hci_req_add_le_scan_disable(req);
1280 }
1281
1282 return true;
1283
1284 case DISCOVERY_RESOLVING:
1285 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
1286 NAME_PENDING);
1287 if (!e)
1288 break;
1289
1290 bacpy(&cp.bdaddr, &e->data.bdaddr);
1291 hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
1292 &cp);
1293
1294 return true;
1295
1296 default:
1297 /* Passive scanning */
1298 if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
1299 hci_req_add_le_scan_disable(req);
1300 return true;
1301 }
1302
1303 break;
1304 }
1305
1306 return false;
1307 }
1308
1309 static int clean_up_hci_state(struct hci_dev *hdev)
1310 {
1311 struct hci_request req;
1312 struct hci_conn *conn;
1313 bool discov_stopped;
1314 int err;
1315
1316 hci_req_init(&req, hdev);
1317
1318 if (test_bit(HCI_ISCAN, &hdev->flags) ||
1319 test_bit(HCI_PSCAN, &hdev->flags)) {
1320 u8 scan = 0x00;
1321 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
1322 }
1323
1324 if (test_bit(HCI_LE_ADV, &hdev->dev_flags))
1325 disable_advertising(&req);
1326
1327 discov_stopped = hci_stop_discovery(&req);
1328
1329 list_for_each_entry(conn, &hdev->conn_hash.list, list) {
1330 struct hci_cp_disconnect dc;
1331 struct hci_cp_reject_conn_req rej;
1332
1333 switch (conn->state) {
1334 case BT_CONNECTED:
1335 case BT_CONFIG:
1336 dc.handle = cpu_to_le16(conn->handle);
1337 dc.reason = 0x15; /* Terminated due to Power Off */
1338 hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
1339 break;
1340 case BT_CONNECT:
1341 if (conn->type == LE_LINK)
1342 hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL,
1343 0, NULL);
1344 else if (conn->type == ACL_LINK)
1345 hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL,
1346 6, &conn->dst);
1347 break;
1348 case BT_CONNECT2:
1349 bacpy(&rej.bdaddr, &conn->dst);
1350 rej.reason = 0x15; /* Terminated due to Power Off */
1351 if (conn->type == ACL_LINK)
1352 hci_req_add(&req, HCI_OP_REJECT_CONN_REQ,
1353 sizeof(rej), &rej);
1354 else if (conn->type == SCO_LINK)
1355 hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ,
1356 sizeof(rej), &rej);
1357 break;
1358 }
1359 }
1360
1361 err = hci_req_run(&req, clean_up_hci_complete);
1362 if (!err && discov_stopped)
1363 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
1364
1365 return err;
1366 }
1367
1368 static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
1369 u16 len)
1370 {
1371 struct mgmt_mode *cp = data;
1372 struct pending_cmd *cmd;
1373 int err;
1374
1375 BT_DBG("request for %s", hdev->name);
1376
1377 if (cp->val != 0x00 && cp->val != 0x01)
1378 return cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1379 MGMT_STATUS_INVALID_PARAMS);
1380
1381 hci_dev_lock(hdev);
1382
1383 if (mgmt_pending_find(MGMT_OP_SET_POWERED, hdev)) {
1384 err = cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1385 MGMT_STATUS_BUSY);
1386 goto failed;
1387 }
1388
1389 if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) {
1390 cancel_delayed_work(&hdev->power_off);
1391
1392 if (cp->val) {
1393 mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev,
1394 data, len);
1395 err = mgmt_powered(hdev, 1);
1396 goto failed;
1397 }
1398 }
1399
1400 if (!!cp->val == hdev_is_powered(hdev)) {
1401 err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev);
1402 goto failed;
1403 }
1404
1405 cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len);
1406 if (!cmd) {
1407 err = -ENOMEM;
1408 goto failed;
1409 }
1410
1411 if (cp->val) {
1412 queue_work(hdev->req_workqueue, &hdev->power_on);
1413 err = 0;
1414 } else {
1415 /* Disconnect connections, stop scans, etc */
1416 err = clean_up_hci_state(hdev);
1417 if (!err)
1418 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
1419 HCI_POWER_OFF_TIMEOUT);
1420
1421 /* ENODATA means there were no HCI commands queued */
1422 if (err == -ENODATA) {
1423 cancel_delayed_work(&hdev->power_off);
1424 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1425 err = 0;
1426 }
1427 }
1428
1429 failed:
1430 hci_dev_unlock(hdev);
1431 return err;
1432 }
1433
1434 static int new_settings(struct hci_dev *hdev, struct sock *skip)
1435 {
1436 __le32 ev;
1437
1438 ev = cpu_to_le32(get_current_settings(hdev));
1439
1440 return mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev), skip);
1441 }
1442
1443 int mgmt_new_settings(struct hci_dev *hdev)
1444 {
1445 return new_settings(hdev, NULL);
1446 }
1447
1448 struct cmd_lookup {
1449 struct sock *sk;
1450 struct hci_dev *hdev;
1451 u8 mgmt_status;
1452 };
1453
1454 static void settings_rsp(struct pending_cmd *cmd, void *data)
1455 {
1456 struct cmd_lookup *match = data;
1457
1458 send_settings_rsp(cmd->sk, cmd->opcode, match->hdev);
1459
1460 list_del(&cmd->list);
1461
1462 if (match->sk == NULL) {
1463 match->sk = cmd->sk;
1464 sock_hold(match->sk);
1465 }
1466
1467 mgmt_pending_free(cmd);
1468 }
1469
1470 static void cmd_status_rsp(struct pending_cmd *cmd, void *data)
1471 {
1472 u8 *status = data;
1473
1474 cmd_status(cmd->sk, cmd->index, cmd->opcode, *status);
1475 mgmt_pending_remove(cmd);
1476 }
1477
1478 static void cmd_complete_rsp(struct pending_cmd *cmd, void *data)
1479 {
1480 if (cmd->cmd_complete) {
1481 u8 *status = data;
1482
1483 cmd->cmd_complete(cmd, *status);
1484 mgmt_pending_remove(cmd);
1485
1486 return;
1487 }
1488
1489 cmd_status_rsp(cmd, data);
1490 }
1491
1492 static int generic_cmd_complete(struct pending_cmd *cmd, u8 status)
1493 {
1494 return cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1495 cmd->param, cmd->param_len);
1496 }
1497
1498 static int addr_cmd_complete(struct pending_cmd *cmd, u8 status)
1499 {
1500 return cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, cmd->param,
1501 sizeof(struct mgmt_addr_info));
1502 }
1503
1504 static u8 mgmt_bredr_support(struct hci_dev *hdev)
1505 {
1506 if (!lmp_bredr_capable(hdev))
1507 return MGMT_STATUS_NOT_SUPPORTED;
1508 else if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1509 return MGMT_STATUS_REJECTED;
1510 else
1511 return MGMT_STATUS_SUCCESS;
1512 }
1513
1514 static u8 mgmt_le_support(struct hci_dev *hdev)
1515 {
1516 if (!lmp_le_capable(hdev))
1517 return MGMT_STATUS_NOT_SUPPORTED;
1518 else if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
1519 return MGMT_STATUS_REJECTED;
1520 else
1521 return MGMT_STATUS_SUCCESS;
1522 }
1523
1524 static void set_discoverable_complete(struct hci_dev *hdev, u8 status,
1525 u16 opcode)
1526 {
1527 struct pending_cmd *cmd;
1528 struct mgmt_mode *cp;
1529 struct hci_request req;
1530 bool changed;
1531
1532 BT_DBG("status 0x%02x", status);
1533
1534 hci_dev_lock(hdev);
1535
1536 cmd = mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
1537 if (!cmd)
1538 goto unlock;
1539
1540 if (status) {
1541 u8 mgmt_err = mgmt_status(status);
1542 cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
1543 clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
1544 goto remove_cmd;
1545 }
1546
1547 cp = cmd->param;
1548 if (cp->val) {
1549 changed = !test_and_set_bit(HCI_DISCOVERABLE,
1550 &hdev->dev_flags);
1551
1552 if (hdev->discov_timeout > 0) {
1553 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1554 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1555 to);
1556 }
1557 } else {
1558 changed = test_and_clear_bit(HCI_DISCOVERABLE,
1559 &hdev->dev_flags);
1560 }
1561
1562 send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1563
1564 if (changed)
1565 new_settings(hdev, cmd->sk);
1566
1567 /* When the discoverable mode gets changed, make sure
1568 * that class of device has the limited discoverable
1569 * bit correctly set. Also update page scan based on whitelist
1570 * entries.
1571 */
1572 hci_req_init(&req, hdev);
1573 __hci_update_page_scan(&req);
1574 update_class(&req);
1575 hci_req_run(&req, NULL);
1576
1577 remove_cmd:
1578 mgmt_pending_remove(cmd);
1579
1580 unlock:
1581 hci_dev_unlock(hdev);
1582 }
1583
1584 static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data,
1585 u16 len)
1586 {
1587 struct mgmt_cp_set_discoverable *cp = data;
1588 struct pending_cmd *cmd;
1589 struct hci_request req;
1590 u16 timeout;
1591 u8 scan;
1592 int err;
1593
1594 BT_DBG("request for %s", hdev->name);
1595
1596 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags) &&
1597 !test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1598 return cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1599 MGMT_STATUS_REJECTED);
1600
1601 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
1602 return cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1603 MGMT_STATUS_INVALID_PARAMS);
1604
1605 timeout = __le16_to_cpu(cp->timeout);
1606
1607 /* Disabling discoverable requires that no timeout is set,
1608 * and enabling limited discoverable requires a timeout.
1609 */
1610 if ((cp->val == 0x00 && timeout > 0) ||
1611 (cp->val == 0x02 && timeout == 0))
1612 return cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1613 MGMT_STATUS_INVALID_PARAMS);
1614
1615 hci_dev_lock(hdev);
1616
1617 if (!hdev_is_powered(hdev) && timeout > 0) {
1618 err = cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1619 MGMT_STATUS_NOT_POWERED);
1620 goto failed;
1621 }
1622
1623 if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
1624 mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
1625 err = cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1626 MGMT_STATUS_BUSY);
1627 goto failed;
1628 }
1629
1630 if (!test_bit(HCI_CONNECTABLE, &hdev->dev_flags)) {
1631 err = cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1632 MGMT_STATUS_REJECTED);
1633 goto failed;
1634 }
1635
1636 if (!hdev_is_powered(hdev)) {
1637 bool changed = false;
1638
1639 /* Setting limited discoverable when powered off is
1640 * not a valid operation since it requires a timeout
1641 * and so no need to check HCI_LIMITED_DISCOVERABLE.
1642 */
1643 if (!!cp->val != test_bit(HCI_DISCOVERABLE, &hdev->dev_flags)) {
1644 change_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
1645 changed = true;
1646 }
1647
1648 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1649 if (err < 0)
1650 goto failed;
1651
1652 if (changed)
1653 err = new_settings(hdev, sk);
1654
1655 goto failed;
1656 }
1657
1658 /* If the current mode is the same, then just update the timeout
1659 * value with the new value. And if only the timeout gets updated,
1660 * then no need for any HCI transactions.
1661 */
1662 if (!!cp->val == test_bit(HCI_DISCOVERABLE, &hdev->dev_flags) &&
1663 (cp->val == 0x02) == test_bit(HCI_LIMITED_DISCOVERABLE,
1664 &hdev->dev_flags)) {
1665 cancel_delayed_work(&hdev->discov_off);
1666 hdev->discov_timeout = timeout;
1667
1668 if (cp->val && hdev->discov_timeout > 0) {
1669 int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1670 queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1671 to);
1672 }
1673
1674 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1675 goto failed;
1676 }
1677
1678 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len);
1679 if (!cmd) {
1680 err = -ENOMEM;
1681 goto failed;
1682 }
1683
1684 /* Cancel any potential discoverable timeout that might be
1685 * still active and store new timeout value. The arming of
1686 * the timeout happens in the complete handler.
1687 */
1688 cancel_delayed_work(&hdev->discov_off);
1689 hdev->discov_timeout = timeout;
1690
1691 /* Limited discoverable mode */
1692 if (cp->val == 0x02)
1693 set_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
1694 else
1695 clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
1696
1697 hci_req_init(&req, hdev);
1698
1699 /* The procedure for LE-only controllers is much simpler - just
1700 * update the advertising data.
1701 */
1702 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1703 goto update_ad;
1704
1705 scan = SCAN_PAGE;
1706
1707 if (cp->val) {
1708 struct hci_cp_write_current_iac_lap hci_cp;
1709
1710 if (cp->val == 0x02) {
1711 /* Limited discoverable mode */
1712 hci_cp.num_iac = min_t(u8, hdev->num_iac, 2);
1713 hci_cp.iac_lap[0] = 0x00; /* LIAC */
1714 hci_cp.iac_lap[1] = 0x8b;
1715 hci_cp.iac_lap[2] = 0x9e;
1716 hci_cp.iac_lap[3] = 0x33; /* GIAC */
1717 hci_cp.iac_lap[4] = 0x8b;
1718 hci_cp.iac_lap[5] = 0x9e;
1719 } else {
1720 /* General discoverable mode */
1721 hci_cp.num_iac = 1;
1722 hci_cp.iac_lap[0] = 0x33; /* GIAC */
1723 hci_cp.iac_lap[1] = 0x8b;
1724 hci_cp.iac_lap[2] = 0x9e;
1725 }
1726
1727 hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP,
1728 (hci_cp.num_iac * 3) + 1, &hci_cp);
1729
1730 scan |= SCAN_INQUIRY;
1731 } else {
1732 clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
1733 }
1734
1735 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan);
1736
1737 update_ad:
1738 update_adv_data(&req);
1739
1740 err = hci_req_run(&req, set_discoverable_complete);
1741 if (err < 0)
1742 mgmt_pending_remove(cmd);
1743
1744 failed:
1745 hci_dev_unlock(hdev);
1746 return err;
1747 }
1748
1749 static void write_fast_connectable(struct hci_request *req, bool enable)
1750 {
1751 struct hci_dev *hdev = req->hdev;
1752 struct hci_cp_write_page_scan_activity acp;
1753 u8 type;
1754
1755 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1756 return;
1757
1758 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
1759 return;
1760
1761 if (enable) {
1762 type = PAGE_SCAN_TYPE_INTERLACED;
1763
1764 /* 160 msec page scan interval */
1765 acp.interval = cpu_to_le16(0x0100);
1766 } else {
1767 type = PAGE_SCAN_TYPE_STANDARD; /* default */
1768
1769 /* default 1.28 sec page scan */
1770 acp.interval = cpu_to_le16(0x0800);
1771 }
1772
1773 acp.window = cpu_to_le16(0x0012);
1774
1775 if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval ||
1776 __cpu_to_le16(hdev->page_scan_window) != acp.window)
1777 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
1778 sizeof(acp), &acp);
1779
1780 if (hdev->page_scan_type != type)
1781 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
1782 }
1783
1784 static void set_connectable_complete(struct hci_dev *hdev, u8 status,
1785 u16 opcode)
1786 {
1787 struct pending_cmd *cmd;
1788 struct mgmt_mode *cp;
1789 bool conn_changed, discov_changed;
1790
1791 BT_DBG("status 0x%02x", status);
1792
1793 hci_dev_lock(hdev);
1794
1795 cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
1796 if (!cmd)
1797 goto unlock;
1798
1799 if (status) {
1800 u8 mgmt_err = mgmt_status(status);
1801 cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
1802 goto remove_cmd;
1803 }
1804
1805 cp = cmd->param;
1806 if (cp->val) {
1807 conn_changed = !test_and_set_bit(HCI_CONNECTABLE,
1808 &hdev->dev_flags);
1809 discov_changed = false;
1810 } else {
1811 conn_changed = test_and_clear_bit(HCI_CONNECTABLE,
1812 &hdev->dev_flags);
1813 discov_changed = test_and_clear_bit(HCI_DISCOVERABLE,
1814 &hdev->dev_flags);
1815 }
1816
1817 send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev);
1818
1819 if (conn_changed || discov_changed) {
1820 new_settings(hdev, cmd->sk);
1821 hci_update_page_scan(hdev);
1822 if (discov_changed)
1823 mgmt_update_adv_data(hdev);
1824 hci_update_background_scan(hdev);
1825 }
1826
1827 remove_cmd:
1828 mgmt_pending_remove(cmd);
1829
1830 unlock:
1831 hci_dev_unlock(hdev);
1832 }
1833
1834 static int set_connectable_update_settings(struct hci_dev *hdev,
1835 struct sock *sk, u8 val)
1836 {
1837 bool changed = false;
1838 int err;
1839
1840 if (!!val != test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
1841 changed = true;
1842
1843 if (val) {
1844 set_bit(HCI_CONNECTABLE, &hdev->dev_flags);
1845 } else {
1846 clear_bit(HCI_CONNECTABLE, &hdev->dev_flags);
1847 clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
1848 }
1849
1850 err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
1851 if (err < 0)
1852 return err;
1853
1854 if (changed) {
1855 hci_update_page_scan(hdev);
1856 hci_update_background_scan(hdev);
1857 return new_settings(hdev, sk);
1858 }
1859
1860 return 0;
1861 }
1862
1863 static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data,
1864 u16 len)
1865 {
1866 struct mgmt_mode *cp = data;
1867 struct pending_cmd *cmd;
1868 struct hci_request req;
1869 u8 scan;
1870 int err;
1871
1872 BT_DBG("request for %s", hdev->name);
1873
1874 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags) &&
1875 !test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
1876 return cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
1877 MGMT_STATUS_REJECTED);
1878
1879 if (cp->val != 0x00 && cp->val != 0x01)
1880 return cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
1881 MGMT_STATUS_INVALID_PARAMS);
1882
1883 hci_dev_lock(hdev);
1884
1885 if (!hdev_is_powered(hdev)) {
1886 err = set_connectable_update_settings(hdev, sk, cp->val);
1887 goto failed;
1888 }
1889
1890 if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
1891 mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
1892 err = cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
1893 MGMT_STATUS_BUSY);
1894 goto failed;
1895 }
1896
1897 cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len);
1898 if (!cmd) {
1899 err = -ENOMEM;
1900 goto failed;
1901 }
1902
1903 hci_req_init(&req, hdev);
1904
1905 /* If BR/EDR is not enabled and we disable advertising as a
1906 * by-product of disabling connectable, we need to update the
1907 * advertising flags.
1908 */
1909 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
1910 if (!cp->val) {
1911 clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
1912 clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
1913 }
1914 update_adv_data(&req);
1915 } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) {
1916 if (cp->val) {
1917 scan = SCAN_PAGE;
1918 } else {
1919 /* If we don't have any whitelist entries just
1920 * disable all scanning. If there are entries
1921 * and we had both page and inquiry scanning
1922 * enabled then fall back to only page scanning.
1923 * Otherwise no changes are needed.
1924 */
1925 if (list_empty(&hdev->whitelist))
1926 scan = SCAN_DISABLED;
1927 else if (test_bit(HCI_ISCAN, &hdev->flags))
1928 scan = SCAN_PAGE;
1929 else
1930 goto no_scan_update;
1931
1932 if (test_bit(HCI_ISCAN, &hdev->flags) &&
1933 hdev->discov_timeout > 0)
1934 cancel_delayed_work(&hdev->discov_off);
1935 }
1936
1937 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
1938 }
1939
1940 no_scan_update:
1941 /* If we're going from non-connectable to connectable or
1942 * vice-versa when fast connectable is enabled ensure that fast
1943 * connectable gets disabled. write_fast_connectable won't do
1944 * anything if the page scan parameters are already what they
1945 * should be.
1946 */
1947 if (cp->val || test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags))
1948 write_fast_connectable(&req, false);
1949
1950 /* Update the advertising parameters if necessary */
1951 if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
1952 enable_advertising(&req);
1953
1954 err = hci_req_run(&req, set_connectable_complete);
1955 if (err < 0) {
1956 mgmt_pending_remove(cmd);
1957 if (err == -ENODATA)
1958 err = set_connectable_update_settings(hdev, sk,
1959 cp->val);
1960 goto failed;
1961 }
1962
1963 failed:
1964 hci_dev_unlock(hdev);
1965 return err;
1966 }
1967
1968 static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data,
1969 u16 len)
1970 {
1971 struct mgmt_mode *cp = data;
1972 bool changed;
1973 int err;
1974
1975 BT_DBG("request for %s", hdev->name);
1976
1977 if (cp->val != 0x00 && cp->val != 0x01)
1978 return cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE,
1979 MGMT_STATUS_INVALID_PARAMS);
1980
1981 hci_dev_lock(hdev);
1982
1983 if (cp->val)
1984 changed = !test_and_set_bit(HCI_BONDABLE, &hdev->dev_flags);
1985 else
1986 changed = test_and_clear_bit(HCI_BONDABLE, &hdev->dev_flags);
1987
1988 err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev);
1989 if (err < 0)
1990 goto unlock;
1991
1992 if (changed)
1993 err = new_settings(hdev, sk);
1994
1995 unlock:
1996 hci_dev_unlock(hdev);
1997 return err;
1998 }
1999
2000 static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data,
2001 u16 len)
2002 {
2003 struct mgmt_mode *cp = data;
2004 struct pending_cmd *cmd;
2005 u8 val, status;
2006 int err;
2007
2008 BT_DBG("request for %s", hdev->name);
2009
2010 status = mgmt_bredr_support(hdev);
2011 if (status)
2012 return cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2013 status);
2014
2015 if (cp->val != 0x00 && cp->val != 0x01)
2016 return cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2017 MGMT_STATUS_INVALID_PARAMS);
2018
2019 hci_dev_lock(hdev);
2020
2021 if (!hdev_is_powered(hdev)) {
2022 bool changed = false;
2023
2024 if (!!cp->val != test_bit(HCI_LINK_SECURITY,
2025 &hdev->dev_flags)) {
2026 change_bit(HCI_LINK_SECURITY, &hdev->dev_flags);
2027 changed = true;
2028 }
2029
2030 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2031 if (err < 0)
2032 goto failed;
2033
2034 if (changed)
2035 err = new_settings(hdev, sk);
2036
2037 goto failed;
2038 }
2039
2040 if (mgmt_pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) {
2041 err = cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2042 MGMT_STATUS_BUSY);
2043 goto failed;
2044 }
2045
2046 val = !!cp->val;
2047
2048 if (test_bit(HCI_AUTH, &hdev->flags) == val) {
2049 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2050 goto failed;
2051 }
2052
2053 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len);
2054 if (!cmd) {
2055 err = -ENOMEM;
2056 goto failed;
2057 }
2058
2059 err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val);
2060 if (err < 0) {
2061 mgmt_pending_remove(cmd);
2062 goto failed;
2063 }
2064
2065 failed:
2066 hci_dev_unlock(hdev);
2067 return err;
2068 }
2069
2070 static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2071 {
2072 struct mgmt_mode *cp = data;
2073 struct pending_cmd *cmd;
2074 u8 status;
2075 int err;
2076
2077 BT_DBG("request for %s", hdev->name);
2078
2079 status = mgmt_bredr_support(hdev);
2080 if (status)
2081 return cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status);
2082
2083 if (!lmp_ssp_capable(hdev))
2084 return cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2085 MGMT_STATUS_NOT_SUPPORTED);
2086
2087 if (cp->val != 0x00 && cp->val != 0x01)
2088 return cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2089 MGMT_STATUS_INVALID_PARAMS);
2090
2091 hci_dev_lock(hdev);
2092
2093 if (!hdev_is_powered(hdev)) {
2094 bool changed;
2095
2096 if (cp->val) {
2097 changed = !test_and_set_bit(HCI_SSP_ENABLED,
2098 &hdev->dev_flags);
2099 } else {
2100 changed = test_and_clear_bit(HCI_SSP_ENABLED,
2101 &hdev->dev_flags);
2102 if (!changed)
2103 changed = test_and_clear_bit(HCI_HS_ENABLED,
2104 &hdev->dev_flags);
2105 else
2106 clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
2107 }
2108
2109 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2110 if (err < 0)
2111 goto failed;
2112
2113 if (changed)
2114 err = new_settings(hdev, sk);
2115
2116 goto failed;
2117 }
2118
2119 if (mgmt_pending_find(MGMT_OP_SET_SSP, hdev) ||
2120 mgmt_pending_find(MGMT_OP_SET_HS, hdev)) {
2121 err = cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2122 MGMT_STATUS_BUSY);
2123 goto failed;
2124 }
2125
2126 if (!!cp->val == test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
2127 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2128 goto failed;
2129 }
2130
2131 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len);
2132 if (!cmd) {
2133 err = -ENOMEM;
2134 goto failed;
2135 }
2136
2137 if (!cp->val && test_bit(HCI_USE_DEBUG_KEYS, &hdev->dev_flags))
2138 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2139 sizeof(cp->val), &cp->val);
2140
2141 err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val);
2142 if (err < 0) {
2143 mgmt_pending_remove(cmd);
2144 goto failed;
2145 }
2146
2147 failed:
2148 hci_dev_unlock(hdev);
2149 return err;
2150 }
2151
2152 static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2153 {
2154 struct mgmt_mode *cp = data;
2155 bool changed;
2156 u8 status;
2157 int err;
2158
2159 BT_DBG("request for %s", hdev->name);
2160
2161 status = mgmt_bredr_support(hdev);
2162 if (status)
2163 return cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
2164
2165 if (!lmp_ssp_capable(hdev))
2166 return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2167 MGMT_STATUS_NOT_SUPPORTED);
2168
2169 if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
2170 return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2171 MGMT_STATUS_REJECTED);
2172
2173 if (cp->val != 0x00 && cp->val != 0x01)
2174 return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2175 MGMT_STATUS_INVALID_PARAMS);
2176
2177 hci_dev_lock(hdev);
2178
2179 if (cp->val) {
2180 changed = !test_and_set_bit(HCI_HS_ENABLED, &hdev->dev_flags);
2181 } else {
2182 if (hdev_is_powered(hdev)) {
2183 err = cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2184 MGMT_STATUS_REJECTED);
2185 goto unlock;
2186 }
2187
2188 changed = test_and_clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
2189 }
2190
2191 err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
2192 if (err < 0)
2193 goto unlock;
2194
2195 if (changed)
2196 err = new_settings(hdev, sk);
2197
2198 unlock:
2199 hci_dev_unlock(hdev);
2200 return err;
2201 }
2202
2203 static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2204 {
2205 struct cmd_lookup match = { NULL, hdev };
2206
2207 hci_dev_lock(hdev);
2208
2209 if (status) {
2210 u8 mgmt_err = mgmt_status(status);
2211
2212 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp,
2213 &mgmt_err);
2214 goto unlock;
2215 }
2216
2217 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match);
2218
2219 new_settings(hdev, match.sk);
2220
2221 if (match.sk)
2222 sock_put(match.sk);
2223
2224 /* Make sure the controller has a good default for
2225 * advertising data. Restrict the update to when LE
2226 * has actually been enabled. During power on, the
2227 * update in powered_update_hci will take care of it.
2228 */
2229 if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
2230 struct hci_request req;
2231
2232 hci_req_init(&req, hdev);
2233 update_adv_data(&req);
2234 update_scan_rsp_data(&req);
2235 __hci_update_background_scan(&req);
2236 hci_req_run(&req, NULL);
2237 }
2238
2239 unlock:
2240 hci_dev_unlock(hdev);
2241 }
2242
2243 static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2244 {
2245 struct mgmt_mode *cp = data;
2246 struct hci_cp_write_le_host_supported hci_cp;
2247 struct pending_cmd *cmd;
2248 struct hci_request req;
2249 int err;
2250 u8 val, enabled;
2251
2252 BT_DBG("request for %s", hdev->name);
2253
2254 if (!lmp_le_capable(hdev))
2255 return cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2256 MGMT_STATUS_NOT_SUPPORTED);
2257
2258 if (cp->val != 0x00 && cp->val != 0x01)
2259 return cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2260 MGMT_STATUS_INVALID_PARAMS);
2261
2262 /* LE-only devices do not allow toggling LE on/off */
2263 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
2264 return cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2265 MGMT_STATUS_REJECTED);
2266
2267 hci_dev_lock(hdev);
2268
2269 val = !!cp->val;
2270 enabled = lmp_host_le_capable(hdev);
2271
2272 if (!hdev_is_powered(hdev) || val == enabled) {
2273 bool changed = false;
2274
2275 if (val != test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
2276 change_bit(HCI_LE_ENABLED, &hdev->dev_flags);
2277 changed = true;
2278 }
2279
2280 if (!val && test_bit(HCI_ADVERTISING, &hdev->dev_flags)) {
2281 clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
2282 changed = true;
2283 }
2284
2285 err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2286 if (err < 0)
2287 goto unlock;
2288
2289 if (changed)
2290 err = new_settings(hdev, sk);
2291
2292 goto unlock;
2293 }
2294
2295 if (mgmt_pending_find(MGMT_OP_SET_LE, hdev) ||
2296 mgmt_pending_find(MGMT_OP_SET_ADVERTISING, hdev)) {
2297 err = cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2298 MGMT_STATUS_BUSY);
2299 goto unlock;
2300 }
2301
2302 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len);
2303 if (!cmd) {
2304 err = -ENOMEM;
2305 goto unlock;
2306 }
2307
2308 hci_req_init(&req, hdev);
2309
2310 memset(&hci_cp, 0, sizeof(hci_cp));
2311
2312 if (val) {
2313 hci_cp.le = val;
2314 hci_cp.simul = 0x00;
2315 } else {
2316 if (test_bit(HCI_LE_ADV, &hdev->dev_flags))
2317 disable_advertising(&req);
2318 }
2319
2320 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp),
2321 &hci_cp);
2322
2323 err = hci_req_run(&req, le_enable_complete);
2324 if (err < 0)
2325 mgmt_pending_remove(cmd);
2326
2327 unlock:
2328 hci_dev_unlock(hdev);
2329 return err;
2330 }
2331
2332 /* This is a helper function to test for pending mgmt commands that can
2333 * cause CoD or EIR HCI commands. We can only allow one such pending
2334 * mgmt command at a time since otherwise we cannot easily track what
2335 * the current values are, will be, and based on that calculate if a new
2336 * HCI command needs to be sent and if yes with what value.
2337 */
2338 static bool pending_eir_or_class(struct hci_dev *hdev)
2339 {
2340 struct pending_cmd *cmd;
2341
2342 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
2343 switch (cmd->opcode) {
2344 case MGMT_OP_ADD_UUID:
2345 case MGMT_OP_REMOVE_UUID:
2346 case MGMT_OP_SET_DEV_CLASS:
2347 case MGMT_OP_SET_POWERED:
2348 return true;
2349 }
2350 }
2351
2352 return false;
2353 }
2354
2355 static const u8 bluetooth_base_uuid[] = {
2356 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
2357 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2358 };
2359
2360 static u8 get_uuid_size(const u8 *uuid)
2361 {
2362 u32 val;
2363
2364 if (memcmp(uuid, bluetooth_base_uuid, 12))
2365 return 128;
2366
2367 val = get_unaligned_le32(&uuid[12]);
2368 if (val > 0xffff)
2369 return 32;
2370
2371 return 16;
2372 }
2373
2374 static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status)
2375 {
2376 struct pending_cmd *cmd;
2377
2378 hci_dev_lock(hdev);
2379
2380 cmd = mgmt_pending_find(mgmt_op, hdev);
2381 if (!cmd)
2382 goto unlock;
2383
2384 cmd_complete(cmd->sk, cmd->index, cmd->opcode, mgmt_status(status),
2385 hdev->dev_class, 3);
2386
2387 mgmt_pending_remove(cmd);
2388
2389 unlock:
2390 hci_dev_unlock(hdev);
2391 }
2392
2393 static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2394 {
2395 BT_DBG("status 0x%02x", status);
2396
2397 mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status);
2398 }
2399
2400 static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2401 {
2402 struct mgmt_cp_add_uuid *cp = data;
2403 struct pending_cmd *cmd;
2404 struct hci_request req;
2405 struct bt_uuid *uuid;
2406 int err;
2407
2408 BT_DBG("request for %s", hdev->name);
2409
2410 hci_dev_lock(hdev);
2411
2412 if (pending_eir_or_class(hdev)) {
2413 err = cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID,
2414 MGMT_STATUS_BUSY);
2415 goto failed;
2416 }
2417
2418 uuid = kmalloc(sizeof(*uuid), GFP_KERNEL);
2419 if (!uuid) {
2420 err = -ENOMEM;
2421 goto failed;
2422 }
2423
2424 memcpy(uuid->uuid, cp->uuid, 16);
2425 uuid->svc_hint = cp->svc_hint;
2426 uuid->size = get_uuid_size(cp->uuid);
2427
2428 list_add_tail(&uuid->list, &hdev->uuids);
2429
2430 hci_req_init(&req, hdev);
2431
2432 update_class(&req);
2433 update_eir(&req);
2434
2435 err = hci_req_run(&req, add_uuid_complete);
2436 if (err < 0) {
2437 if (err != -ENODATA)
2438 goto failed;
2439
2440 err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0,
2441 hdev->dev_class, 3);
2442 goto failed;
2443 }
2444
2445 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len);
2446 if (!cmd) {
2447 err = -ENOMEM;
2448 goto failed;
2449 }
2450
2451 err = 0;
2452
2453 failed:
2454 hci_dev_unlock(hdev);
2455 return err;
2456 }
2457
2458 static bool enable_service_cache(struct hci_dev *hdev)
2459 {
2460 if (!hdev_is_powered(hdev))
2461 return false;
2462
2463 if (!test_and_set_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) {
2464 queue_delayed_work(hdev->workqueue, &hdev->service_cache,
2465 CACHE_TIMEOUT);
2466 return true;
2467 }
2468
2469 return false;
2470 }
2471
2472 static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2473 {
2474 BT_DBG("status 0x%02x", status);
2475
2476 mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status);
2477 }
2478
2479 static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
2480 u16 len)
2481 {
2482 struct mgmt_cp_remove_uuid *cp = data;
2483 struct pending_cmd *cmd;
2484 struct bt_uuid *match, *tmp;
2485 u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
2486 struct hci_request req;
2487 int err, found;
2488
2489 BT_DBG("request for %s", hdev->name);
2490
2491 hci_dev_lock(hdev);
2492
2493 if (pending_eir_or_class(hdev)) {
2494 err = cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2495 MGMT_STATUS_BUSY);
2496 goto unlock;
2497 }
2498
2499 if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) {
2500 hci_uuids_clear(hdev);
2501
2502 if (enable_service_cache(hdev)) {
2503 err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2504 0, hdev->dev_class, 3);
2505 goto unlock;
2506 }
2507
2508 goto update_class;
2509 }
2510
2511 found = 0;
2512
2513 list_for_each_entry_safe(match, tmp, &hdev->uuids, list) {
2514 if (memcmp(match->uuid, cp->uuid, 16) != 0)
2515 continue;
2516
2517 list_del(&match->list);
2518 kfree(match);
2519 found++;
2520 }
2521
2522 if (found == 0) {
2523 err = cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2524 MGMT_STATUS_INVALID_PARAMS);
2525 goto unlock;
2526 }
2527
2528 update_class:
2529 hci_req_init(&req, hdev);
2530
2531 update_class(&req);
2532 update_eir(&req);
2533
2534 err = hci_req_run(&req, remove_uuid_complete);
2535 if (err < 0) {
2536 if (err != -ENODATA)
2537 goto unlock;
2538
2539 err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0,
2540 hdev->dev_class, 3);
2541 goto unlock;
2542 }
2543
2544 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len);
2545 if (!cmd) {
2546 err = -ENOMEM;
2547 goto unlock;
2548 }
2549
2550 err = 0;
2551
2552 unlock:
2553 hci_dev_unlock(hdev);
2554 return err;
2555 }
2556
2557 static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2558 {
2559 BT_DBG("status 0x%02x", status);
2560
2561 mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status);
2562 }
2563
2564 static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
2565 u16 len)
2566 {
2567 struct mgmt_cp_set_dev_class *cp = data;
2568 struct pending_cmd *cmd;
2569 struct hci_request req;
2570 int err;
2571
2572 BT_DBG("request for %s", hdev->name);
2573
2574 if (!lmp_bredr_capable(hdev))
2575 return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2576 MGMT_STATUS_NOT_SUPPORTED);
2577
2578 hci_dev_lock(hdev);
2579
2580 if (pending_eir_or_class(hdev)) {
2581 err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2582 MGMT_STATUS_BUSY);
2583 goto unlock;
2584 }
2585
2586 if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
2587 err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2588 MGMT_STATUS_INVALID_PARAMS);
2589 goto unlock;
2590 }
2591
2592 hdev->major_class = cp->major;
2593 hdev->minor_class = cp->minor;
2594
2595 if (!hdev_is_powered(hdev)) {
2596 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2597 hdev->dev_class, 3);
2598 goto unlock;
2599 }
2600
2601 hci_req_init(&req, hdev);
2602
2603 if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) {
2604 hci_dev_unlock(hdev);
2605 cancel_delayed_work_sync(&hdev->service_cache);
2606 hci_dev_lock(hdev);
2607 update_eir(&req);
2608 }
2609
2610 update_class(&req);
2611
2612 err = hci_req_run(&req, set_class_complete);
2613 if (err < 0) {
2614 if (err != -ENODATA)
2615 goto unlock;
2616
2617 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2618 hdev->dev_class, 3);
2619 goto unlock;
2620 }
2621
2622 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len);
2623 if (!cmd) {
2624 err = -ENOMEM;
2625 goto unlock;
2626 }
2627
2628 err = 0;
2629
2630 unlock:
2631 hci_dev_unlock(hdev);
2632 return err;
2633 }
2634
2635 static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
2636 u16 len)
2637 {
2638 struct mgmt_cp_load_link_keys *cp = data;
2639 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
2640 sizeof(struct mgmt_link_key_info));
2641 u16 key_count, expected_len;
2642 bool changed;
2643 int i;
2644
2645 BT_DBG("request for %s", hdev->name);
2646
2647 if (!lmp_bredr_capable(hdev))
2648 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2649 MGMT_STATUS_NOT_SUPPORTED);
2650
2651 key_count = __le16_to_cpu(cp->key_count);
2652 if (key_count > max_key_count) {
2653 BT_ERR("load_link_keys: too big key_count value %u",
2654 key_count);
2655 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2656 MGMT_STATUS_INVALID_PARAMS);
2657 }
2658
2659 expected_len = sizeof(*cp) + key_count *
2660 sizeof(struct mgmt_link_key_info);
2661 if (expected_len != len) {
2662 BT_ERR("load_link_keys: expected %u bytes, got %u bytes",
2663 expected_len, len);
2664 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2665 MGMT_STATUS_INVALID_PARAMS);
2666 }
2667
2668 if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01)
2669 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2670 MGMT_STATUS_INVALID_PARAMS);
2671
2672 BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys,
2673 key_count);
2674
2675 for (i = 0; i < key_count; i++) {
2676 struct mgmt_link_key_info *key = &cp->keys[i];
2677
2678 if (key->addr.type != BDADDR_BREDR || key->type > 0x08)
2679 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2680 MGMT_STATUS_INVALID_PARAMS);
2681 }
2682
2683 hci_dev_lock(hdev);
2684
2685 hci_link_keys_clear(hdev);
2686
2687 if (cp->debug_keys)
2688 changed = !test_and_set_bit(HCI_KEEP_DEBUG_KEYS,
2689 &hdev->dev_flags);
2690 else
2691 changed = test_and_clear_bit(HCI_KEEP_DEBUG_KEYS,
2692 &hdev->dev_flags);
2693
2694 if (changed)
2695 new_settings(hdev, NULL);
2696
2697 for (i = 0; i < key_count; i++) {
2698 struct mgmt_link_key_info *key = &cp->keys[i];
2699
2700 /* Always ignore debug keys and require a new pairing if
2701 * the user wants to use them.
2702 */
2703 if (key->type == HCI_LK_DEBUG_COMBINATION)
2704 continue;
2705
2706 hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
2707 key->type, key->pin_len, NULL);
2708 }
2709
2710 cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0);
2711
2712 hci_dev_unlock(hdev);
2713
2714 return 0;
2715 }
2716
2717 static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr,
2718 u8 addr_type, struct sock *skip_sk)
2719 {
2720 struct mgmt_ev_device_unpaired ev;
2721
2722 bacpy(&ev.addr.bdaddr, bdaddr);
2723 ev.addr.type = addr_type;
2724
2725 return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev),
2726 skip_sk);
2727 }
2728
2729 static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
2730 u16 len)
2731 {
2732 struct mgmt_cp_unpair_device *cp = data;
2733 struct mgmt_rp_unpair_device rp;
2734 struct hci_cp_disconnect dc;
2735 struct pending_cmd *cmd;
2736 struct hci_conn *conn;
2737 int err;
2738
2739 memset(&rp, 0, sizeof(rp));
2740 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
2741 rp.addr.type = cp->addr.type;
2742
2743 if (!bdaddr_type_is_valid(cp->addr.type))
2744 return cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
2745 MGMT_STATUS_INVALID_PARAMS,
2746 &rp, sizeof(rp));
2747
2748 if (cp->disconnect != 0x00 && cp->disconnect != 0x01)
2749 return cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
2750 MGMT_STATUS_INVALID_PARAMS,
2751 &rp, sizeof(rp));
2752
2753 hci_dev_lock(hdev);
2754
2755 if (!hdev_is_powered(hdev)) {
2756 err = cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
2757 MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
2758 goto unlock;
2759 }
2760
2761 if (cp->addr.type == BDADDR_BREDR) {
2762 /* If disconnection is requested, then look up the
2763 * connection. If the remote device is connected, it
2764 * will be later used to terminate the link.
2765 *
2766 * Setting it to NULL explicitly will cause no
2767 * termination of the link.
2768 */
2769 if (cp->disconnect)
2770 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
2771 &cp->addr.bdaddr);
2772 else
2773 conn = NULL;
2774
2775 err = hci_remove_link_key(hdev, &cp->addr.bdaddr);
2776 } else {
2777 u8 addr_type;
2778
2779 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK,
2780 &cp->addr.bdaddr);
2781 if (conn) {
2782 /* Defer clearing up the connection parameters
2783 * until closing to give a chance of keeping
2784 * them if a repairing happens.
2785 */
2786 set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
2787
2788 /* If disconnection is not requested, then
2789 * clear the connection variable so that the
2790 * link is not terminated.
2791 */
2792 if (!cp->disconnect)
2793 conn = NULL;
2794 }
2795
2796 if (cp->addr.type == BDADDR_LE_PUBLIC)
2797 addr_type = ADDR_LE_DEV_PUBLIC;
2798 else
2799 addr_type = ADDR_LE_DEV_RANDOM;
2800
2801 hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
2802
2803 err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
2804 }
2805
2806 if (err < 0) {
2807 err = cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
2808 MGMT_STATUS_NOT_PAIRED, &rp, sizeof(rp));
2809 goto unlock;
2810 }
2811
2812 /* If the connection variable is set, then termination of the
2813 * link is requested.
2814 */
2815 if (!conn) {
2816 err = cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0,
2817 &rp, sizeof(rp));
2818 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk);
2819 goto unlock;
2820 }
2821
2822 cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp,
2823 sizeof(*cp));
2824 if (!cmd) {
2825 err = -ENOMEM;
2826 goto unlock;
2827 }
2828
2829 cmd->cmd_complete = addr_cmd_complete;
2830
2831 dc.handle = cpu_to_le16(conn->handle);
2832 dc.reason = 0x13; /* Remote User Terminated Connection */
2833 err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc);
2834 if (err < 0)
2835 mgmt_pending_remove(cmd);
2836
2837 unlock:
2838 hci_dev_unlock(hdev);
2839 return err;
2840 }
2841
2842 static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
2843 u16 len)
2844 {
2845 struct mgmt_cp_disconnect *cp = data;
2846 struct mgmt_rp_disconnect rp;
2847 struct pending_cmd *cmd;
2848 struct hci_conn *conn;
2849 int err;
2850
2851 BT_DBG("");
2852
2853 memset(&rp, 0, sizeof(rp));
2854 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
2855 rp.addr.type = cp->addr.type;
2856
2857 if (!bdaddr_type_is_valid(cp->addr.type))
2858 return cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
2859 MGMT_STATUS_INVALID_PARAMS,
2860 &rp, sizeof(rp));
2861
2862 hci_dev_lock(hdev);
2863
2864 if (!test_bit(HCI_UP, &hdev->flags)) {
2865 err = cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
2866 MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
2867 goto failed;
2868 }
2869
2870 if (mgmt_pending_find(MGMT_OP_DISCONNECT, hdev)) {
2871 err = cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
2872 MGMT_STATUS_BUSY, &rp, sizeof(rp));
2873 goto failed;
2874 }
2875
2876 if (cp->addr.type == BDADDR_BREDR)
2877 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
2878 &cp->addr.bdaddr);
2879 else
2880 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
2881
2882 if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) {
2883 err = cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
2884 MGMT_STATUS_NOT_CONNECTED, &rp, sizeof(rp));
2885 goto failed;
2886 }
2887
2888 cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len);
2889 if (!cmd) {
2890 err = -ENOMEM;
2891 goto failed;
2892 }
2893
2894 cmd->cmd_complete = generic_cmd_complete;
2895
2896 err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM);
2897 if (err < 0)
2898 mgmt_pending_remove(cmd);
2899
2900 failed:
2901 hci_dev_unlock(hdev);
2902 return err;
2903 }
2904
2905 static u8 link_to_bdaddr(u8 link_type, u8 addr_type)
2906 {
2907 switch (link_type) {
2908 case LE_LINK:
2909 switch (addr_type) {
2910 case ADDR_LE_DEV_PUBLIC:
2911 return BDADDR_LE_PUBLIC;
2912
2913 default:
2914 /* Fallback to LE Random address type */
2915 return BDADDR_LE_RANDOM;
2916 }
2917
2918 default:
2919 /* Fallback to BR/EDR type */
2920 return BDADDR_BREDR;
2921 }
2922 }
2923
2924 static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data,
2925 u16 data_len)
2926 {
2927 struct mgmt_rp_get_connections *rp;
2928 struct hci_conn *c;
2929 size_t rp_len;
2930 int err;
2931 u16 i;
2932
2933 BT_DBG("");
2934
2935 hci_dev_lock(hdev);
2936
2937 if (!hdev_is_powered(hdev)) {
2938 err = cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS,
2939 MGMT_STATUS_NOT_POWERED);
2940 goto unlock;
2941 }
2942
2943 i = 0;
2944 list_for_each_entry(c, &hdev->conn_hash.list, list) {
2945 if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
2946 i++;
2947 }
2948
2949 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
2950 rp = kmalloc(rp_len, GFP_KERNEL);
2951 if (!rp) {
2952 err = -ENOMEM;
2953 goto unlock;
2954 }
2955
2956 i = 0;
2957 list_for_each_entry(c, &hdev->conn_hash.list, list) {
2958 if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
2959 continue;
2960 bacpy(&rp->addr[i].bdaddr, &c->dst);
2961 rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type);
2962 if (c->type == SCO_LINK || c->type == ESCO_LINK)
2963 continue;
2964 i++;
2965 }
2966
2967 rp->conn_count = cpu_to_le16(i);
2968
2969 /* Recalculate length in case of filtered SCO connections, etc */
2970 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
2971
2972 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp,
2973 rp_len);
2974
2975 kfree(rp);
2976
2977 unlock:
2978 hci_dev_unlock(hdev);
2979 return err;
2980 }
2981
2982 static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
2983 struct mgmt_cp_pin_code_neg_reply *cp)
2984 {
2985 struct pending_cmd *cmd;
2986 int err;
2987
2988 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp,
2989 sizeof(*cp));
2990 if (!cmd)
2991 return -ENOMEM;
2992
2993 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
2994 sizeof(cp->addr.bdaddr), &cp->addr.bdaddr);
2995 if (err < 0)
2996 mgmt_pending_remove(cmd);
2997
2998 return err;
2999 }
3000
3001 static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3002 u16 len)
3003 {
3004 struct hci_conn *conn;
3005 struct mgmt_cp_pin_code_reply *cp = data;
3006 struct hci_cp_pin_code_reply reply;
3007 struct pending_cmd *cmd;
3008 int err;
3009
3010 BT_DBG("");
3011
3012 hci_dev_lock(hdev);
3013
3014 if (!hdev_is_powered(hdev)) {
3015 err = cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3016 MGMT_STATUS_NOT_POWERED);
3017 goto failed;
3018 }
3019
3020 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr);
3021 if (!conn) {
3022 err = cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3023 MGMT_STATUS_NOT_CONNECTED);
3024 goto failed;
3025 }
3026
3027 if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) {
3028 struct mgmt_cp_pin_code_neg_reply ncp;
3029
3030 memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr));
3031
3032 BT_ERR("PIN code is not 16 bytes long");
3033
3034 err = send_pin_code_neg_reply(sk, hdev, &ncp);
3035 if (err >= 0)
3036 err = cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3037 MGMT_STATUS_INVALID_PARAMS);
3038
3039 goto failed;
3040 }
3041
3042 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len);
3043 if (!cmd) {
3044 err = -ENOMEM;
3045 goto failed;
3046 }
3047
3048 cmd->cmd_complete = addr_cmd_complete;
3049
3050 bacpy(&reply.bdaddr, &cp->addr.bdaddr);
3051 reply.pin_len = cp->pin_len;
3052 memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code));
3053
3054 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply);
3055 if (err < 0)
3056 mgmt_pending_remove(cmd);
3057
3058 failed:
3059 hci_dev_unlock(hdev);
3060 return err;
3061 }
3062
3063 static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data,
3064 u16 len)
3065 {
3066 struct mgmt_cp_set_io_capability *cp = data;
3067
3068 BT_DBG("");
3069
3070 if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY)
3071 return cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY,
3072 MGMT_STATUS_INVALID_PARAMS, NULL, 0);
3073
3074 hci_dev_lock(hdev);
3075
3076 hdev->io_capability = cp->io_capability;
3077
3078 BT_DBG("%s IO capability set to 0x%02x", hdev->name,
3079 hdev->io_capability);
3080
3081 hci_dev_unlock(hdev);
3082
3083 return cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0, NULL,
3084 0);
3085 }
3086
3087 static struct pending_cmd *find_pairing(struct hci_conn *conn)
3088 {
3089 struct hci_dev *hdev = conn->hdev;
3090 struct pending_cmd *cmd;
3091
3092 list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
3093 if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
3094 continue;
3095
3096 if (cmd->user_data != conn)
3097 continue;
3098
3099 return cmd;
3100 }
3101
3102 return NULL;
3103 }
3104
3105 static int pairing_complete(struct pending_cmd *cmd, u8 status)
3106 {
3107 struct mgmt_rp_pair_device rp;
3108 struct hci_conn *conn = cmd->user_data;
3109 int err;
3110
3111 bacpy(&rp.addr.bdaddr, &conn->dst);
3112 rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
3113
3114 err = cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE, status,
3115 &rp, sizeof(rp));
3116
3117 /* So we don't get further callbacks for this connection */
3118 conn->connect_cfm_cb = NULL;
3119 conn->security_cfm_cb = NULL;
3120 conn->disconn_cfm_cb = NULL;
3121
3122 hci_conn_drop(conn);
3123
3124 /* The device is paired so there is no need to remove
3125 * its connection parameters anymore.
3126 */
3127 clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3128
3129 hci_conn_put(conn);
3130
3131 return err;
3132 }
3133
3134 void mgmt_smp_complete(struct hci_conn *conn, bool complete)
3135 {
3136 u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
3137 struct pending_cmd *cmd;
3138
3139 cmd = find_pairing(conn);
3140 if (cmd) {
3141 cmd->cmd_complete(cmd, status);
3142 mgmt_pending_remove(cmd);
3143 }
3144 }
3145
3146 static void pairing_complete_cb(struct hci_conn *conn, u8 status)
3147 {
3148 struct pending_cmd *cmd;
3149
3150 BT_DBG("status %u", status);
3151
3152 cmd = find_pairing(conn);
3153 if (!cmd) {
3154 BT_DBG("Unable to find a pending command");
3155 return;
3156 }
3157
3158 cmd->cmd_complete(cmd, mgmt_status(status));
3159 mgmt_pending_remove(cmd);
3160 }
3161
3162 static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
3163 {
3164 struct pending_cmd *cmd;
3165
3166 BT_DBG("status %u", status);
3167
3168 if (!status)
3169 return;
3170
3171 cmd = find_pairing(conn);
3172 if (!cmd) {
3173 BT_DBG("Unable to find a pending command");
3174 return;
3175 }
3176
3177 cmd->cmd_complete(cmd, mgmt_status(status));
3178 mgmt_pending_remove(cmd);
3179 }
3180
3181 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3182 u16 len)
3183 {
3184 struct mgmt_cp_pair_device *cp = data;
3185 struct mgmt_rp_pair_device rp;
3186 struct pending_cmd *cmd;
3187 u8 sec_level, auth_type;
3188 struct hci_conn *conn;
3189 int err;
3190
3191 BT_DBG("");
3192
3193 memset(&rp, 0, sizeof(rp));
3194 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3195 rp.addr.type = cp->addr.type;
3196
3197 if (!bdaddr_type_is_valid(cp->addr.type))
3198 return cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3199 MGMT_STATUS_INVALID_PARAMS,
3200 &rp, sizeof(rp));
3201
3202 if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY)
3203 return cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3204 MGMT_STATUS_INVALID_PARAMS,
3205 &rp, sizeof(rp));
3206
3207 hci_dev_lock(hdev);
3208
3209 if (!hdev_is_powered(hdev)) {
3210 err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3211 MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
3212 goto unlock;
3213 }
3214
3215 sec_level = BT_SECURITY_MEDIUM;
3216 auth_type = HCI_AT_DEDICATED_BONDING;
3217
3218 if (cp->addr.type == BDADDR_BREDR) {
3219 conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
3220 auth_type);
3221 } else {
3222 u8 addr_type;
3223
3224 /* Convert from L2CAP channel address type to HCI address type
3225 */
3226 if (cp->addr.type == BDADDR_LE_PUBLIC)
3227 addr_type = ADDR_LE_DEV_PUBLIC;
3228 else
3229 addr_type = ADDR_LE_DEV_RANDOM;
3230
3231 /* When pairing a new device, it is expected to remember
3232 * this device for future connections. Adding the connection
3233 * parameter information ahead of time allows tracking
3234 * of the slave preferred values and will speed up any
3235 * further connection establishment.
3236 *
3237 * If connection parameters already exist, then they
3238 * will be kept and this function does nothing.
3239 */
3240 hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
3241
3242 conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type,
3243 sec_level, HCI_LE_CONN_TIMEOUT,
3244 HCI_ROLE_MASTER);
3245 }
3246
3247 if (IS_ERR(conn)) {
3248 int status;
3249
3250 if (PTR_ERR(conn) == -EBUSY)
3251 status = MGMT_STATUS_BUSY;
3252 else
3253 status = MGMT_STATUS_CONNECT_FAILED;
3254
3255 err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3256 status, &rp,
3257 sizeof(rp));
3258 goto unlock;
3259 }
3260
3261 if (conn->connect_cfm_cb) {
3262 hci_conn_drop(conn);
3263 err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3264 MGMT_STATUS_BUSY, &rp, sizeof(rp));
3265 goto unlock;
3266 }
3267
3268 cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
3269 if (!cmd) {
3270 err = -ENOMEM;
3271 hci_conn_drop(conn);
3272 goto unlock;
3273 }
3274
3275 cmd->cmd_complete = pairing_complete;
3276
3277 /* For LE, just connecting isn't a proof that the pairing finished */
3278 if (cp->addr.type == BDADDR_BREDR) {
3279 conn->connect_cfm_cb = pairing_complete_cb;
3280 conn->security_cfm_cb = pairing_complete_cb;
3281 conn->disconn_cfm_cb = pairing_complete_cb;
3282 } else {
3283 conn->connect_cfm_cb = le_pairing_complete_cb;
3284 conn->security_cfm_cb = le_pairing_complete_cb;
3285 conn->disconn_cfm_cb = le_pairing_complete_cb;
3286 }
3287
3288 conn->io_capability = cp->io_cap;
3289 cmd->user_data = hci_conn_get(conn);
3290
3291 if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) &&
3292 hci_conn_security(conn, sec_level, auth_type, true)) {
3293 cmd->cmd_complete(cmd, 0);
3294 mgmt_pending_remove(cmd);
3295 }
3296
3297 err = 0;
3298
3299 unlock:
3300 hci_dev_unlock(hdev);
3301 return err;
3302 }
3303
3304 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3305 u16 len)
3306 {
3307 struct mgmt_addr_info *addr = data;
3308 struct pending_cmd *cmd;
3309 struct hci_conn *conn;
3310 int err;
3311
3312 BT_DBG("");
3313
3314 hci_dev_lock(hdev);
3315
3316 if (!hdev_is_powered(hdev)) {
3317 err = cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3318 MGMT_STATUS_NOT_POWERED);
3319 goto unlock;
3320 }
3321
3322 cmd = mgmt_pending_find(MGMT_OP_PAIR_DEVICE, hdev);
3323 if (!cmd) {
3324 err = cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3325 MGMT_STATUS_INVALID_PARAMS);
3326 goto unlock;
3327 }
3328
3329 conn = cmd->user_data;
3330
3331 if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
3332 err = cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3333 MGMT_STATUS_INVALID_PARAMS);
3334 goto unlock;
3335 }
3336
3337 cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
3338 mgmt_pending_remove(cmd);
3339
3340 err = cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
3341 addr, sizeof(*addr));
3342 unlock:
3343 hci_dev_unlock(hdev);
3344 return err;
3345 }
3346
3347 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev,
3348 struct mgmt_addr_info *addr, u16 mgmt_op,
3349 u16 hci_op, __le32 passkey)
3350 {
3351 struct pending_cmd *cmd;
3352 struct hci_conn *conn;
3353 int err;
3354
3355 hci_dev_lock(hdev);
3356
3357 if (!hdev_is_powered(hdev)) {
3358 err = cmd_complete(sk, hdev->id, mgmt_op,
3359 MGMT_STATUS_NOT_POWERED, addr,
3360 sizeof(*addr));
3361 goto done;
3362 }
3363
3364 if (addr->type == BDADDR_BREDR)
3365 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr);
3366 else
3367 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr);
3368
3369 if (!conn) {
3370 err = cmd_complete(sk, hdev->id, mgmt_op,
3371 MGMT_STATUS_NOT_CONNECTED, addr,
3372 sizeof(*addr));
3373 goto done;
3374 }
3375
3376 if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) {
3377 err = smp_user_confirm_reply(conn, mgmt_op, passkey);
3378 if (!err)
3379 err = cmd_complete(sk, hdev->id, mgmt_op,
3380 MGMT_STATUS_SUCCESS, addr,
3381 sizeof(*addr));
3382 else
3383 err = cmd_complete(sk, hdev->id, mgmt_op,
3384 MGMT_STATUS_FAILED, addr,
3385 sizeof(*addr));
3386
3387 goto done;
3388 }
3389
3390 cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr));
3391 if (!cmd) {
3392 err = -ENOMEM;
3393 goto done;
3394 }
3395
3396 cmd->cmd_complete = addr_cmd_complete;
3397
3398 /* Continue with pairing via HCI */
3399 if (hci_op == HCI_OP_USER_PASSKEY_REPLY) {
3400 struct hci_cp_user_passkey_reply cp;
3401
3402 bacpy(&cp.bdaddr, &addr->bdaddr);
3403 cp.passkey = passkey;
3404 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp);
3405 } else
3406 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr),
3407 &addr->bdaddr);
3408
3409 if (err < 0)
3410 mgmt_pending_remove(cmd);
3411
3412 done:
3413 hci_dev_unlock(hdev);
3414 return err;
3415 }
3416
3417 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3418 void *data, u16 len)
3419 {
3420 struct mgmt_cp_pin_code_neg_reply *cp = data;
3421
3422 BT_DBG("");
3423
3424 return user_pairing_resp(sk, hdev, &cp->addr,
3425 MGMT_OP_PIN_CODE_NEG_REPLY,
3426 HCI_OP_PIN_CODE_NEG_REPLY, 0);
3427 }
3428
3429 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3430 u16 len)
3431 {
3432 struct mgmt_cp_user_confirm_reply *cp = data;
3433
3434 BT_DBG("");
3435
3436 if (len != sizeof(*cp))
3437 return cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY,
3438 MGMT_STATUS_INVALID_PARAMS);
3439
3440 return user_pairing_resp(sk, hdev, &cp->addr,
3441 MGMT_OP_USER_CONFIRM_REPLY,
3442 HCI_OP_USER_CONFIRM_REPLY, 0);
3443 }
3444
3445 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev,
3446 void *data, u16 len)
3447 {
3448 struct mgmt_cp_user_confirm_neg_reply *cp = data;
3449
3450 BT_DBG("");
3451
3452 return user_pairing_resp(sk, hdev, &cp->addr,
3453 MGMT_OP_USER_CONFIRM_NEG_REPLY,
3454 HCI_OP_USER_CONFIRM_NEG_REPLY, 0);
3455 }
3456
3457 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3458 u16 len)
3459 {
3460 struct mgmt_cp_user_passkey_reply *cp = data;
3461
3462 BT_DBG("");
3463
3464 return user_pairing_resp(sk, hdev, &cp->addr,
3465 MGMT_OP_USER_PASSKEY_REPLY,
3466 HCI_OP_USER_PASSKEY_REPLY, cp->passkey);
3467 }
3468
3469 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
3470 void *data, u16 len)
3471 {
3472 struct mgmt_cp_user_passkey_neg_reply *cp = data;
3473
3474 BT_DBG("");
3475
3476 return user_pairing_resp(sk, hdev, &cp->addr,
3477 MGMT_OP_USER_PASSKEY_NEG_REPLY,
3478 HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
3479 }
3480
3481 static void update_name(struct hci_request *req)
3482 {
3483 struct hci_dev *hdev = req->hdev;
3484 struct hci_cp_write_local_name cp;
3485
3486 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3487
3488 hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
3489 }
3490
3491 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode)
3492 {
3493 struct mgmt_cp_set_local_name *cp;
3494 struct pending_cmd *cmd;
3495
3496 BT_DBG("status 0x%02x", status);
3497
3498 hci_dev_lock(hdev);
3499
3500 cmd = mgmt_pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
3501 if (!cmd)
3502 goto unlock;
3503
3504 cp = cmd->param;
3505
3506 if (status)
3507 cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
3508 mgmt_status(status));
3509 else
3510 cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3511 cp, sizeof(*cp));
3512
3513 mgmt_pending_remove(cmd);
3514
3515 unlock:
3516 hci_dev_unlock(hdev);
3517 }
3518
3519 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
3520 u16 len)
3521 {
3522 struct mgmt_cp_set_local_name *cp = data;
3523 struct pending_cmd *cmd;
3524 struct hci_request req;
3525 int err;
3526
3527 BT_DBG("");
3528
3529 hci_dev_lock(hdev);
3530
3531 /* If the old values are the same as the new ones just return a
3532 * direct command complete event.
3533 */
3534 if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) &&
3535 !memcmp(hdev->short_name, cp->short_name,
3536 sizeof(hdev->short_name))) {
3537 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3538 data, len);
3539 goto failed;
3540 }
3541
3542 memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
3543
3544 if (!hdev_is_powered(hdev)) {
3545 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3546
3547 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3548 data, len);
3549 if (err < 0)
3550 goto failed;
3551
3552 err = mgmt_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, data, len,
3553 sk);
3554
3555 goto failed;
3556 }
3557
3558 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len);
3559 if (!cmd) {
3560 err = -ENOMEM;
3561 goto failed;
3562 }
3563
3564 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3565
3566 hci_req_init(&req, hdev);
3567
3568 if (lmp_bredr_capable(hdev)) {
3569 update_name(&req);
3570 update_eir(&req);
3571 }
3572
3573 /* The name is stored in the scan response data and so
3574 * no need to udpate the advertising data here.
3575 */
3576 if (lmp_le_capable(hdev))
3577 update_scan_rsp_data(&req);
3578
3579 err = hci_req_run(&req, set_name_complete);
3580 if (err < 0)
3581 mgmt_pending_remove(cmd);
3582
3583 failed:
3584 hci_dev_unlock(hdev);
3585 return err;
3586 }
3587
3588 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
3589 void *data, u16 data_len)
3590 {
3591 struct pending_cmd *cmd;
3592 int err;
3593
3594 BT_DBG("%s", hdev->name);
3595
3596 hci_dev_lock(hdev);
3597
3598 if (!hdev_is_powered(hdev)) {
3599 err = cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3600 MGMT_STATUS_NOT_POWERED);
3601 goto unlock;
3602 }
3603
3604 if (!lmp_ssp_capable(hdev)) {
3605 err = cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3606 MGMT_STATUS_NOT_SUPPORTED);
3607 goto unlock;
3608 }
3609
3610 if (mgmt_pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) {
3611 err = cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3612 MGMT_STATUS_BUSY);
3613 goto unlock;
3614 }
3615
3616 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0);
3617 if (!cmd) {
3618 err = -ENOMEM;
3619 goto unlock;
3620 }
3621
3622 if (bredr_sc_enabled(hdev))
3623 err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_EXT_DATA,
3624 0, NULL);
3625 else
3626 err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
3627
3628 if (err < 0)
3629 mgmt_pending_remove(cmd);
3630
3631 unlock:
3632 hci_dev_unlock(hdev);
3633 return err;
3634 }
3635
3636 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
3637 void *data, u16 len)
3638 {
3639 struct mgmt_addr_info *addr = data;
3640 int err;
3641
3642 BT_DBG("%s ", hdev->name);
3643
3644 if (!bdaddr_type_is_valid(addr->type))
3645 return cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
3646 MGMT_STATUS_INVALID_PARAMS, addr,
3647 sizeof(*addr));
3648
3649 hci_dev_lock(hdev);
3650
3651 if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
3652 struct mgmt_cp_add_remote_oob_data *cp = data;
3653 u8 status;
3654
3655 if (cp->addr.type != BDADDR_BREDR) {
3656 err = cmd_complete(sk, hdev->id,
3657 MGMT_OP_ADD_REMOTE_OOB_DATA,
3658 MGMT_STATUS_INVALID_PARAMS,
3659 &cp->addr, sizeof(cp->addr));
3660 goto unlock;
3661 }
3662
3663 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
3664 cp->addr.type, cp->hash,
3665 cp->rand, NULL, NULL);
3666 if (err < 0)
3667 status = MGMT_STATUS_FAILED;
3668 else
3669 status = MGMT_STATUS_SUCCESS;
3670
3671 err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
3672 status, &cp->addr, sizeof(cp->addr));
3673 } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
3674 struct mgmt_cp_add_remote_oob_ext_data *cp = data;
3675 u8 *rand192, *hash192, *rand256, *hash256;
3676 u8 status;
3677
3678 if (bdaddr_type_is_le(cp->addr.type)) {
3679 /* Enforce zero-valued 192-bit parameters as
3680 * long as legacy SMP OOB isn't implemented.
3681 */
3682 if (memcmp(cp->rand192, ZERO_KEY, 16) ||
3683 memcmp(cp->hash192, ZERO_KEY, 16)) {
3684 err = cmd_complete(sk, hdev->id,
3685 MGMT_OP_ADD_REMOTE_OOB_DATA,
3686 MGMT_STATUS_INVALID_PARAMS,
3687 addr, sizeof(*addr));
3688 goto unlock;
3689 }
3690
3691 rand192 = NULL;
3692 hash192 = NULL;
3693 } else {
3694 /* In case one of the P-192 values is set to zero,
3695 * then just disable OOB data for P-192.
3696 */
3697 if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
3698 !memcmp(cp->hash192, ZERO_KEY, 16)) {
3699 rand192 = NULL;
3700 hash192 = NULL;
3701 } else {
3702 rand192 = cp->rand192;
3703 hash192 = cp->hash192;
3704 }
3705 }
3706
3707 /* In case one of the P-256 values is set to zero, then just
3708 * disable OOB data for P-256.
3709 */
3710 if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
3711 !memcmp(cp->hash256, ZERO_KEY, 16)) {
3712 rand256 = NULL;
3713 hash256 = NULL;
3714 } else {
3715 rand256 = cp->rand256;
3716 hash256 = cp->hash256;
3717 }
3718
3719 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
3720 cp->addr.type, hash192, rand192,
3721 hash256, rand256);
3722 if (err < 0)
3723 status = MGMT_STATUS_FAILED;
3724 else
3725 status = MGMT_STATUS_SUCCESS;
3726
3727 err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
3728 status, &cp->addr, sizeof(cp->addr));
3729 } else {
3730 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
3731 err = cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
3732 MGMT_STATUS_INVALID_PARAMS);
3733 }
3734
3735 unlock:
3736 hci_dev_unlock(hdev);
3737 return err;
3738 }
3739
3740 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
3741 void *data, u16 len)
3742 {
3743 struct mgmt_cp_remove_remote_oob_data *cp = data;
3744 u8 status;
3745 int err;
3746
3747 BT_DBG("%s", hdev->name);
3748
3749 if (cp->addr.type != BDADDR_BREDR)
3750 return cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
3751 MGMT_STATUS_INVALID_PARAMS,
3752 &cp->addr, sizeof(cp->addr));
3753
3754 hci_dev_lock(hdev);
3755
3756 if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
3757 hci_remote_oob_data_clear(hdev);
3758 status = MGMT_STATUS_SUCCESS;
3759 goto done;
3760 }
3761
3762 err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type);
3763 if (err < 0)
3764 status = MGMT_STATUS_INVALID_PARAMS;
3765 else
3766 status = MGMT_STATUS_SUCCESS;
3767
3768 done:
3769 err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
3770 status, &cp->addr, sizeof(cp->addr));
3771
3772 hci_dev_unlock(hdev);
3773 return err;
3774 }
3775
3776 static bool trigger_discovery(struct hci_request *req, u8 *status)
3777 {
3778 struct hci_dev *hdev = req->hdev;
3779 struct hci_cp_le_set_scan_param param_cp;
3780 struct hci_cp_le_set_scan_enable enable_cp;
3781 struct hci_cp_inquiry inq_cp;
3782 /* General inquiry access code (GIAC) */
3783 u8 lap[3] = { 0x33, 0x8b, 0x9e };
3784 u8 own_addr_type;
3785 int err;
3786
3787 switch (hdev->discovery.type) {
3788 case DISCOV_TYPE_BREDR:
3789 *status = mgmt_bredr_support(hdev);
3790 if (*status)
3791 return false;
3792
3793 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
3794 *status = MGMT_STATUS_BUSY;
3795 return false;
3796 }
3797
3798 hci_inquiry_cache_flush(hdev);
3799
3800 memset(&inq_cp, 0, sizeof(inq_cp));
3801 memcpy(&inq_cp.lap, lap, sizeof(inq_cp.lap));
3802 inq_cp.length = DISCOV_BREDR_INQUIRY_LEN;
3803 hci_req_add(req, HCI_OP_INQUIRY, sizeof(inq_cp), &inq_cp);
3804 break;
3805
3806 case DISCOV_TYPE_LE:
3807 case DISCOV_TYPE_INTERLEAVED:
3808 *status = mgmt_le_support(hdev);
3809 if (*status)
3810 return false;
3811
3812 if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
3813 !test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
3814 *status = MGMT_STATUS_NOT_SUPPORTED;
3815 return false;
3816 }
3817
3818 if (test_bit(HCI_LE_ADV, &hdev->dev_flags)) {
3819 /* Don't let discovery abort an outgoing
3820 * connection attempt that's using directed
3821 * advertising.
3822 */
3823 if (hci_conn_hash_lookup_state(hdev, LE_LINK,
3824 BT_CONNECT)) {
3825 *status = MGMT_STATUS_REJECTED;
3826 return false;
3827 }
3828
3829 disable_advertising(req);
3830 }
3831
3832 /* If controller is scanning, it means the background scanning
3833 * is running. Thus, we should temporarily stop it in order to
3834 * set the discovery scanning parameters.
3835 */
3836 if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
3837 hci_req_add_le_scan_disable(req);
3838
3839 memset(&param_cp, 0, sizeof(param_cp));
3840
3841 /* All active scans will be done with either a resolvable
3842 * private address (when privacy feature has been enabled)
3843 * or non-resolvable private address.
3844 */
3845 err = hci_update_random_address(req, true, &own_addr_type);
3846 if (err < 0) {
3847 *status = MGMT_STATUS_FAILED;
3848 return false;
3849 }
3850
3851 param_cp.type = LE_SCAN_ACTIVE;
3852 param_cp.interval = cpu_to_le16(DISCOV_LE_SCAN_INT);
3853 param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
3854 param_cp.own_address_type = own_addr_type;
3855 hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
3856 &param_cp);
3857
3858 memset(&enable_cp, 0, sizeof(enable_cp));
3859 enable_cp.enable = LE_SCAN_ENABLE;
3860 enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
3861 hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
3862 &enable_cp);
3863 break;
3864
3865 default:
3866 *status = MGMT_STATUS_INVALID_PARAMS;
3867 return false;
3868 }
3869
3870 return true;
3871 }
3872
3873 static void start_discovery_complete(struct hci_dev *hdev, u8 status,
3874 u16 opcode)
3875 {
3876 struct pending_cmd *cmd;
3877 unsigned long timeout;
3878
3879 BT_DBG("status %d", status);
3880
3881 hci_dev_lock(hdev);
3882
3883 cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
3884 if (!cmd)
3885 cmd = mgmt_pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev);
3886
3887 if (cmd) {
3888 cmd->cmd_complete(cmd, mgmt_status(status));
3889 mgmt_pending_remove(cmd);
3890 }
3891
3892 if (status) {
3893 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3894 goto unlock;
3895 }
3896
3897 hci_discovery_set_state(hdev, DISCOVERY_FINDING);
3898
3899 /* If the scan involves LE scan, pick proper timeout to schedule
3900 * hdev->le_scan_disable that will stop it.
3901 */
3902 switch (hdev->discovery.type) {
3903 case DISCOV_TYPE_LE:
3904 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
3905 break;
3906 case DISCOV_TYPE_INTERLEAVED:
3907 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
3908 break;
3909 case DISCOV_TYPE_BREDR:
3910 timeout = 0;
3911 break;
3912 default:
3913 BT_ERR("Invalid discovery type %d", hdev->discovery.type);
3914 timeout = 0;
3915 break;
3916 }
3917
3918 if (timeout) {
3919 /* When service discovery is used and the controller has
3920 * a strict duplicate filter, it is important to remember
3921 * the start and duration of the scan. This is required
3922 * for restarting scanning during the discovery phase.
3923 */
3924 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
3925 &hdev->quirks) &&
3926 (hdev->discovery.uuid_count > 0 ||
3927 hdev->discovery.rssi != HCI_RSSI_INVALID)) {
3928 hdev->discovery.scan_start = jiffies;
3929 hdev->discovery.scan_duration = timeout;
3930 }
3931
3932 queue_delayed_work(hdev->workqueue,
3933 &hdev->le_scan_disable, timeout);
3934 }
3935
3936 unlock:
3937 hci_dev_unlock(hdev);
3938 }
3939
3940 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
3941 void *data, u16 len)
3942 {
3943 struct mgmt_cp_start_discovery *cp = data;
3944 struct pending_cmd *cmd;
3945 struct hci_request req;
3946 u8 status;
3947 int err;
3948
3949 BT_DBG("%s", hdev->name);
3950
3951 hci_dev_lock(hdev);
3952
3953 if (!hdev_is_powered(hdev)) {
3954 err = cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
3955 MGMT_STATUS_NOT_POWERED,
3956 &cp->type, sizeof(cp->type));
3957 goto failed;
3958 }
3959
3960 if (hdev->discovery.state != DISCOVERY_STOPPED ||
3961 test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags)) {
3962 err = cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
3963 MGMT_STATUS_BUSY, &cp->type,
3964 sizeof(cp->type));
3965 goto failed;
3966 }
3967
3968 cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len);
3969 if (!cmd) {
3970 err = -ENOMEM;
3971 goto failed;
3972 }
3973
3974 cmd->cmd_complete = generic_cmd_complete;
3975
3976 /* Clear the discovery filter first to free any previously
3977 * allocated memory for the UUID list.
3978 */
3979 hci_discovery_filter_clear(hdev);
3980
3981 hdev->discovery.type = cp->type;
3982 hdev->discovery.report_invalid_rssi = false;
3983
3984 hci_req_init(&req, hdev);
3985
3986 if (!trigger_discovery(&req, &status)) {
3987 err = cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
3988 status, &cp->type, sizeof(cp->type));
3989 mgmt_pending_remove(cmd);
3990 goto failed;
3991 }
3992
3993 err = hci_req_run(&req, start_discovery_complete);
3994 if (err < 0) {
3995 mgmt_pending_remove(cmd);
3996 goto failed;
3997 }
3998
3999 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4000
4001 failed:
4002 hci_dev_unlock(hdev);
4003 return err;
4004 }
4005
4006 static int service_discovery_cmd_complete(struct pending_cmd *cmd, u8 status)
4007 {
4008 return cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
4009 cmd->param, 1);
4010 }
4011
4012 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev,
4013 void *data, u16 len)
4014 {
4015 struct mgmt_cp_start_service_discovery *cp = data;
4016 struct pending_cmd *cmd;
4017 struct hci_request req;
4018 const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16);
4019 u16 uuid_count, expected_len;
4020 u8 status;
4021 int err;
4022
4023 BT_DBG("%s", hdev->name);
4024
4025 hci_dev_lock(hdev);
4026
4027 if (!hdev_is_powered(hdev)) {
4028 err = cmd_complete(sk, hdev->id,
4029 MGMT_OP_START_SERVICE_DISCOVERY,
4030 MGMT_STATUS_NOT_POWERED,
4031 &cp->type, sizeof(cp->type));
4032 goto failed;
4033 }
4034
4035 if (hdev->discovery.state != DISCOVERY_STOPPED ||
4036 test_bit(HCI_PERIODIC_INQ, &hdev->dev_flags)) {
4037 err = cmd_complete(sk, hdev->id,
4038 MGMT_OP_START_SERVICE_DISCOVERY,
4039 MGMT_STATUS_BUSY, &cp->type,
4040 sizeof(cp->type));
4041 goto failed;
4042 }
4043
4044 uuid_count = __le16_to_cpu(cp->uuid_count);
4045 if (uuid_count > max_uuid_count) {
4046 BT_ERR("service_discovery: too big uuid_count value %u",
4047 uuid_count);
4048 err = cmd_complete(sk, hdev->id,
4049 MGMT_OP_START_SERVICE_DISCOVERY,
4050 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4051 sizeof(cp->type));
4052 goto failed;
4053 }
4054
4055 expected_len = sizeof(*cp) + uuid_count * 16;
4056 if (expected_len != len) {
4057 BT_ERR("service_discovery: expected %u bytes, got %u bytes",
4058 expected_len, len);
4059 err = cmd_complete(sk, hdev->id,
4060 MGMT_OP_START_SERVICE_DISCOVERY,
4061 MGMT_STATUS_INVALID_PARAMS, &cp->type,
4062 sizeof(cp->type));
4063 goto failed;
4064 }
4065
4066 cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY,
4067 hdev, data, len);
4068 if (!cmd) {
4069 err = -ENOMEM;
4070 goto failed;
4071 }
4072
4073 cmd->cmd_complete = service_discovery_cmd_complete;
4074
4075 /* Clear the discovery filter first to free any previously
4076 * allocated memory for the UUID list.
4077 */
4078 hci_discovery_filter_clear(hdev);
4079
4080 hdev->discovery.type = cp->type;
4081 hdev->discovery.rssi = cp->rssi;
4082 hdev->discovery.uuid_count = uuid_count;
4083
4084 if (uuid_count > 0) {
4085 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16,
4086 GFP_KERNEL);
4087 if (!hdev->discovery.uuids) {
4088 err = cmd_complete(sk, hdev->id,
4089 MGMT_OP_START_SERVICE_DISCOVERY,
4090 MGMT_STATUS_FAILED,
4091 &cp->type, sizeof(cp->type));
4092 mgmt_pending_remove(cmd);
4093 goto failed;
4094 }
4095 }
4096
4097 hci_req_init(&req, hdev);
4098
4099 if (!trigger_discovery(&req, &status)) {
4100 err = cmd_complete(sk, hdev->id,
4101 MGMT_OP_START_SERVICE_DISCOVERY,
4102 status, &cp->type, sizeof(cp->type));
4103 mgmt_pending_remove(cmd);
4104 goto failed;
4105 }
4106
4107 err = hci_req_run(&req, start_discovery_complete);
4108 if (err < 0) {
4109 mgmt_pending_remove(cmd);
4110 goto failed;
4111 }
4112
4113 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4114
4115 failed:
4116 hci_dev_unlock(hdev);
4117 return err;
4118 }
4119
4120 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4121 {
4122 struct pending_cmd *cmd;
4123
4124 BT_DBG("status %d", status);
4125
4126 hci_dev_lock(hdev);
4127
4128 cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
4129 if (cmd) {
4130 cmd->cmd_complete(cmd, mgmt_status(status));
4131 mgmt_pending_remove(cmd);
4132 }
4133
4134 if (!status)
4135 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4136
4137 hci_dev_unlock(hdev);
4138 }
4139
4140 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
4141 u16 len)
4142 {
4143 struct mgmt_cp_stop_discovery *mgmt_cp = data;
4144 struct pending_cmd *cmd;
4145 struct hci_request req;
4146 int err;
4147
4148 BT_DBG("%s", hdev->name);
4149
4150 hci_dev_lock(hdev);
4151
4152 if (!hci_discovery_active(hdev)) {
4153 err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4154 MGMT_STATUS_REJECTED, &mgmt_cp->type,
4155 sizeof(mgmt_cp->type));
4156 goto unlock;
4157 }
4158
4159 if (hdev->discovery.type != mgmt_cp->type) {
4160 err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4161 MGMT_STATUS_INVALID_PARAMS, &mgmt_cp->type,
4162 sizeof(mgmt_cp->type));
4163 goto unlock;
4164 }
4165
4166 cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len);
4167 if (!cmd) {
4168 err = -ENOMEM;
4169 goto unlock;
4170 }
4171
4172 cmd->cmd_complete = generic_cmd_complete;
4173
4174 hci_req_init(&req, hdev);
4175
4176 hci_stop_discovery(&req);
4177
4178 err = hci_req_run(&req, stop_discovery_complete);
4179 if (!err) {
4180 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
4181 goto unlock;
4182 }
4183
4184 mgmt_pending_remove(cmd);
4185
4186 /* If no HCI commands were sent we're done */
4187 if (err == -ENODATA) {
4188 err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0,
4189 &mgmt_cp->type, sizeof(mgmt_cp->type));
4190 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4191 }
4192
4193 unlock:
4194 hci_dev_unlock(hdev);
4195 return err;
4196 }
4197
4198 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
4199 u16 len)
4200 {
4201 struct mgmt_cp_confirm_name *cp = data;
4202 struct inquiry_entry *e;
4203 int err;
4204
4205 BT_DBG("%s", hdev->name);
4206
4207 hci_dev_lock(hdev);
4208
4209 if (!hci_discovery_active(hdev)) {
4210 err = cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4211 MGMT_STATUS_FAILED, &cp->addr,
4212 sizeof(cp->addr));
4213 goto failed;
4214 }
4215
4216 e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
4217 if (!e) {
4218 err = cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4219 MGMT_STATUS_INVALID_PARAMS, &cp->addr,
4220 sizeof(cp->addr));
4221 goto failed;
4222 }
4223
4224 if (cp->name_known) {
4225 e->name_state = NAME_KNOWN;
4226 list_del(&e->list);
4227 } else {
4228 e->name_state = NAME_NEEDED;
4229 hci_inquiry_cache_update_resolve(hdev, e);
4230 }
4231
4232 err = cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0, &cp->addr,
4233 sizeof(cp->addr));
4234
4235 failed:
4236 hci_dev_unlock(hdev);
4237 return err;
4238 }
4239
4240 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
4241 u16 len)
4242 {
4243 struct mgmt_cp_block_device *cp = data;
4244 u8 status;
4245 int err;
4246
4247 BT_DBG("%s", hdev->name);
4248
4249 if (!bdaddr_type_is_valid(cp->addr.type))
4250 return cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
4251 MGMT_STATUS_INVALID_PARAMS,
4252 &cp->addr, sizeof(cp->addr));
4253
4254 hci_dev_lock(hdev);
4255
4256 err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr,
4257 cp->addr.type);
4258 if (err < 0) {
4259 status = MGMT_STATUS_FAILED;
4260 goto done;
4261 }
4262
4263 mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4264 sk);
4265 status = MGMT_STATUS_SUCCESS;
4266
4267 done:
4268 err = cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status,
4269 &cp->addr, sizeof(cp->addr));
4270
4271 hci_dev_unlock(hdev);
4272
4273 return err;
4274 }
4275
4276 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
4277 u16 len)
4278 {
4279 struct mgmt_cp_unblock_device *cp = data;
4280 u8 status;
4281 int err;
4282
4283 BT_DBG("%s", hdev->name);
4284
4285 if (!bdaddr_type_is_valid(cp->addr.type))
4286 return cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
4287 MGMT_STATUS_INVALID_PARAMS,
4288 &cp->addr, sizeof(cp->addr));
4289
4290 hci_dev_lock(hdev);
4291
4292 err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr,
4293 cp->addr.type);
4294 if (err < 0) {
4295 status = MGMT_STATUS_INVALID_PARAMS;
4296 goto done;
4297 }
4298
4299 mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4300 sk);
4301 status = MGMT_STATUS_SUCCESS;
4302
4303 done:
4304 err = cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status,
4305 &cp->addr, sizeof(cp->addr));
4306
4307 hci_dev_unlock(hdev);
4308
4309 return err;
4310 }
4311
4312 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data,
4313 u16 len)
4314 {
4315 struct mgmt_cp_set_device_id *cp = data;
4316 struct hci_request req;
4317 int err;
4318 __u16 source;
4319
4320 BT_DBG("%s", hdev->name);
4321
4322 source = __le16_to_cpu(cp->source);
4323
4324 if (source > 0x0002)
4325 return cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID,
4326 MGMT_STATUS_INVALID_PARAMS);
4327
4328 hci_dev_lock(hdev);
4329
4330 hdev->devid_source = source;
4331 hdev->devid_vendor = __le16_to_cpu(cp->vendor);
4332 hdev->devid_product = __le16_to_cpu(cp->product);
4333 hdev->devid_version = __le16_to_cpu(cp->version);
4334
4335 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0, NULL, 0);
4336
4337 hci_req_init(&req, hdev);
4338 update_eir(&req);
4339 hci_req_run(&req, NULL);
4340
4341 hci_dev_unlock(hdev);
4342
4343 return err;
4344 }
4345
4346 static void set_advertising_complete(struct hci_dev *hdev, u8 status,
4347 u16 opcode)
4348 {
4349 struct cmd_lookup match = { NULL, hdev };
4350
4351 hci_dev_lock(hdev);
4352
4353 if (status) {
4354 u8 mgmt_err = mgmt_status(status);
4355
4356 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev,
4357 cmd_status_rsp, &mgmt_err);
4358 goto unlock;
4359 }
4360
4361 if (test_bit(HCI_LE_ADV, &hdev->dev_flags))
4362 set_bit(HCI_ADVERTISING, &hdev->dev_flags);
4363 else
4364 clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
4365
4366 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp,
4367 &match);
4368
4369 new_settings(hdev, match.sk);
4370
4371 if (match.sk)
4372 sock_put(match.sk);
4373
4374 unlock:
4375 hci_dev_unlock(hdev);
4376 }
4377
4378 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
4379 u16 len)
4380 {
4381 struct mgmt_mode *cp = data;
4382 struct pending_cmd *cmd;
4383 struct hci_request req;
4384 u8 val, enabled, status;
4385 int err;
4386
4387 BT_DBG("request for %s", hdev->name);
4388
4389 status = mgmt_le_support(hdev);
4390 if (status)
4391 return cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4392 status);
4393
4394 if (cp->val != 0x00 && cp->val != 0x01)
4395 return cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4396 MGMT_STATUS_INVALID_PARAMS);
4397
4398 hci_dev_lock(hdev);
4399
4400 val = !!cp->val;
4401 enabled = test_bit(HCI_ADVERTISING, &hdev->dev_flags);
4402
4403 /* The following conditions are ones which mean that we should
4404 * not do any HCI communication but directly send a mgmt
4405 * response to user space (after toggling the flag if
4406 * necessary).
4407 */
4408 if (!hdev_is_powered(hdev) || val == enabled ||
4409 hci_conn_num(hdev, LE_LINK) > 0 ||
4410 (test_bit(HCI_LE_SCAN, &hdev->dev_flags) &&
4411 hdev->le_scan_type == LE_SCAN_ACTIVE)) {
4412 bool changed = false;
4413
4414 if (val != test_bit(HCI_ADVERTISING, &hdev->dev_flags)) {
4415 change_bit(HCI_ADVERTISING, &hdev->dev_flags);
4416 changed = true;
4417 }
4418
4419 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev);
4420 if (err < 0)
4421 goto unlock;
4422
4423 if (changed)
4424 err = new_settings(hdev, sk);
4425
4426 goto unlock;
4427 }
4428
4429 if (mgmt_pending_find(MGMT_OP_SET_ADVERTISING, hdev) ||
4430 mgmt_pending_find(MGMT_OP_SET_LE, hdev)) {
4431 err = cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4432 MGMT_STATUS_BUSY);
4433 goto unlock;
4434 }
4435
4436 cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len);
4437 if (!cmd) {
4438 err = -ENOMEM;
4439 goto unlock;
4440 }
4441
4442 hci_req_init(&req, hdev);
4443
4444 if (val)
4445 enable_advertising(&req);
4446 else
4447 disable_advertising(&req);
4448
4449 err = hci_req_run(&req, set_advertising_complete);
4450 if (err < 0)
4451 mgmt_pending_remove(cmd);
4452
4453 unlock:
4454 hci_dev_unlock(hdev);
4455 return err;
4456 }
4457
4458 static int set_static_address(struct sock *sk, struct hci_dev *hdev,
4459 void *data, u16 len)
4460 {
4461 struct mgmt_cp_set_static_address *cp = data;
4462 int err;
4463
4464 BT_DBG("%s", hdev->name);
4465
4466 if (!lmp_le_capable(hdev))
4467 return cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4468 MGMT_STATUS_NOT_SUPPORTED);
4469
4470 if (hdev_is_powered(hdev))
4471 return cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4472 MGMT_STATUS_REJECTED);
4473
4474 if (bacmp(&cp->bdaddr, BDADDR_ANY)) {
4475 if (!bacmp(&cp->bdaddr, BDADDR_NONE))
4476 return cmd_status(sk, hdev->id,
4477 MGMT_OP_SET_STATIC_ADDRESS,
4478 MGMT_STATUS_INVALID_PARAMS);
4479
4480 /* Two most significant bits shall be set */
4481 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0)
4482 return cmd_status(sk, hdev->id,
4483 MGMT_OP_SET_STATIC_ADDRESS,
4484 MGMT_STATUS_INVALID_PARAMS);
4485 }
4486
4487 hci_dev_lock(hdev);
4488
4489 bacpy(&hdev->static_addr, &cp->bdaddr);
4490
4491 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, 0, NULL, 0);
4492
4493 hci_dev_unlock(hdev);
4494
4495 return err;
4496 }
4497
4498 static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
4499 void *data, u16 len)
4500 {
4501 struct mgmt_cp_set_scan_params *cp = data;
4502 __u16 interval, window;
4503 int err;
4504
4505 BT_DBG("%s", hdev->name);
4506
4507 if (!lmp_le_capable(hdev))
4508 return cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
4509 MGMT_STATUS_NOT_SUPPORTED);
4510
4511 interval = __le16_to_cpu(cp->interval);
4512
4513 if (interval < 0x0004 || interval > 0x4000)
4514 return cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
4515 MGMT_STATUS_INVALID_PARAMS);
4516
4517 window = __le16_to_cpu(cp->window);
4518
4519 if (window < 0x0004 || window > 0x4000)
4520 return cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
4521 MGMT_STATUS_INVALID_PARAMS);
4522
4523 if (window > interval)
4524 return cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
4525 MGMT_STATUS_INVALID_PARAMS);
4526
4527 hci_dev_lock(hdev);
4528
4529 hdev->le_scan_interval = interval;
4530 hdev->le_scan_window = window;
4531
4532 err = cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, NULL, 0);
4533
4534 /* If background scan is running, restart it so new parameters are
4535 * loaded.
4536 */
4537 if (test_bit(HCI_LE_SCAN, &hdev->dev_flags) &&
4538 hdev->discovery.state == DISCOVERY_STOPPED) {
4539 struct hci_request req;
4540
4541 hci_req_init(&req, hdev);
4542
4543 hci_req_add_le_scan_disable(&req);
4544 hci_req_add_le_passive_scan(&req);
4545
4546 hci_req_run(&req, NULL);
4547 }
4548
4549 hci_dev_unlock(hdev);
4550
4551 return err;
4552 }
4553
4554 static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
4555 u16 opcode)
4556 {
4557 struct pending_cmd *cmd;
4558
4559 BT_DBG("status 0x%02x", status);
4560
4561 hci_dev_lock(hdev);
4562
4563 cmd = mgmt_pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
4564 if (!cmd)
4565 goto unlock;
4566
4567 if (status) {
4568 cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4569 mgmt_status(status));
4570 } else {
4571 struct mgmt_mode *cp = cmd->param;
4572
4573 if (cp->val)
4574 set_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags);
4575 else
4576 clear_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags);
4577
4578 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev);
4579 new_settings(hdev, cmd->sk);
4580 }
4581
4582 mgmt_pending_remove(cmd);
4583
4584 unlock:
4585 hci_dev_unlock(hdev);
4586 }
4587
4588 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
4589 void *data, u16 len)
4590 {
4591 struct mgmt_mode *cp = data;
4592 struct pending_cmd *cmd;
4593 struct hci_request req;
4594 int err;
4595
4596 BT_DBG("%s", hdev->name);
4597
4598 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags) ||
4599 hdev->hci_ver < BLUETOOTH_VER_1_2)
4600 return cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4601 MGMT_STATUS_NOT_SUPPORTED);
4602
4603 if (cp->val != 0x00 && cp->val != 0x01)
4604 return cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4605 MGMT_STATUS_INVALID_PARAMS);
4606
4607 if (!hdev_is_powered(hdev))
4608 return cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4609 MGMT_STATUS_NOT_POWERED);
4610
4611 if (!test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
4612 return cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4613 MGMT_STATUS_REJECTED);
4614
4615 hci_dev_lock(hdev);
4616
4617 if (mgmt_pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
4618 err = cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4619 MGMT_STATUS_BUSY);
4620 goto unlock;
4621 }
4622
4623 if (!!cp->val == test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags)) {
4624 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
4625 hdev);
4626 goto unlock;
4627 }
4628
4629 cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
4630 data, len);
4631 if (!cmd) {
4632 err = -ENOMEM;
4633 goto unlock;
4634 }
4635
4636 hci_req_init(&req, hdev);
4637
4638 write_fast_connectable(&req, cp->val);
4639
4640 err = hci_req_run(&req, fast_connectable_complete);
4641 if (err < 0) {
4642 err = cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
4643 MGMT_STATUS_FAILED);
4644 mgmt_pending_remove(cmd);
4645 }
4646
4647 unlock:
4648 hci_dev_unlock(hdev);
4649
4650 return err;
4651 }
4652
4653 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4654 {
4655 struct pending_cmd *cmd;
4656
4657 BT_DBG("status 0x%02x", status);
4658
4659 hci_dev_lock(hdev);
4660
4661 cmd = mgmt_pending_find(MGMT_OP_SET_BREDR, hdev);
4662 if (!cmd)
4663 goto unlock;
4664
4665 if (status) {
4666 u8 mgmt_err = mgmt_status(status);
4667
4668 /* We need to restore the flag if related HCI commands
4669 * failed.
4670 */
4671 clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags);
4672
4673 cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
4674 } else {
4675 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev);
4676 new_settings(hdev, cmd->sk);
4677 }
4678
4679 mgmt_pending_remove(cmd);
4680
4681 unlock:
4682 hci_dev_unlock(hdev);
4683 }
4684
4685 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
4686 {
4687 struct mgmt_mode *cp = data;
4688 struct pending_cmd *cmd;
4689 struct hci_request req;
4690 int err;
4691
4692 BT_DBG("request for %s", hdev->name);
4693
4694 if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev))
4695 return cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4696 MGMT_STATUS_NOT_SUPPORTED);
4697
4698 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
4699 return cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4700 MGMT_STATUS_REJECTED);
4701
4702 if (cp->val != 0x00 && cp->val != 0x01)
4703 return cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4704 MGMT_STATUS_INVALID_PARAMS);
4705
4706 hci_dev_lock(hdev);
4707
4708 if (cp->val == test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
4709 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
4710 goto unlock;
4711 }
4712
4713 if (!hdev_is_powered(hdev)) {
4714 if (!cp->val) {
4715 clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
4716 clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
4717 clear_bit(HCI_LINK_SECURITY, &hdev->dev_flags);
4718 clear_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags);
4719 clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
4720 }
4721
4722 change_bit(HCI_BREDR_ENABLED, &hdev->dev_flags);
4723
4724 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
4725 if (err < 0)
4726 goto unlock;
4727
4728 err = new_settings(hdev, sk);
4729 goto unlock;
4730 }
4731
4732 /* Reject disabling when powered on */
4733 if (!cp->val) {
4734 err = cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4735 MGMT_STATUS_REJECTED);
4736 goto unlock;
4737 } else {
4738 /* When configuring a dual-mode controller to operate
4739 * with LE only and using a static address, then switching
4740 * BR/EDR back on is not allowed.
4741 *
4742 * Dual-mode controllers shall operate with the public
4743 * address as its identity address for BR/EDR and LE. So
4744 * reject the attempt to create an invalid configuration.
4745 *
4746 * The same restrictions applies when secure connections
4747 * has been enabled. For BR/EDR this is a controller feature
4748 * while for LE it is a host stack feature. This means that
4749 * switching BR/EDR back on when secure connections has been
4750 * enabled is not a supported transaction.
4751 */
4752 if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags) &&
4753 (bacmp(&hdev->static_addr, BDADDR_ANY) ||
4754 test_bit(HCI_SC_ENABLED, &hdev->dev_flags))) {
4755 err = cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4756 MGMT_STATUS_REJECTED);
4757 goto unlock;
4758 }
4759 }
4760
4761 if (mgmt_pending_find(MGMT_OP_SET_BREDR, hdev)) {
4762 err = cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
4763 MGMT_STATUS_BUSY);
4764 goto unlock;
4765 }
4766
4767 cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
4768 if (!cmd) {
4769 err = -ENOMEM;
4770 goto unlock;
4771 }
4772
4773 /* We need to flip the bit already here so that update_adv_data
4774 * generates the correct flags.
4775 */
4776 set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags);
4777
4778 hci_req_init(&req, hdev);
4779
4780 write_fast_connectable(&req, false);
4781 __hci_update_page_scan(&req);
4782
4783 /* Since only the advertising data flags will change, there
4784 * is no need to update the scan response data.
4785 */
4786 update_adv_data(&req);
4787
4788 err = hci_req_run(&req, set_bredr_complete);
4789 if (err < 0)
4790 mgmt_pending_remove(cmd);
4791
4792 unlock:
4793 hci_dev_unlock(hdev);
4794 return err;
4795 }
4796
4797 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4798 {
4799 struct pending_cmd *cmd;
4800 struct mgmt_mode *cp;
4801
4802 BT_DBG("%s status %u", hdev->name, status);
4803
4804 hci_dev_lock(hdev);
4805
4806 cmd = mgmt_pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
4807 if (!cmd)
4808 goto unlock;
4809
4810 if (status) {
4811 cmd_status(cmd->sk, cmd->index, cmd->opcode,
4812 mgmt_status(status));
4813 goto remove;
4814 }
4815
4816 cp = cmd->param;
4817
4818 switch (cp->val) {
4819 case 0x00:
4820 clear_bit(HCI_SC_ENABLED, &hdev->dev_flags);
4821 clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
4822 break;
4823 case 0x01:
4824 set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
4825 clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
4826 break;
4827 case 0x02:
4828 set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
4829 set_bit(HCI_SC_ONLY, &hdev->dev_flags);
4830 break;
4831 }
4832
4833 send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
4834 new_settings(hdev, cmd->sk);
4835
4836 remove:
4837 mgmt_pending_remove(cmd);
4838 unlock:
4839 hci_dev_unlock(hdev);
4840 }
4841
4842 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
4843 void *data, u16 len)
4844 {
4845 struct mgmt_mode *cp = data;
4846 struct pending_cmd *cmd;
4847 struct hci_request req;
4848 u8 val;
4849 int err;
4850
4851 BT_DBG("request for %s", hdev->name);
4852
4853 if (!lmp_sc_capable(hdev) &&
4854 !test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
4855 return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
4856 MGMT_STATUS_NOT_SUPPORTED);
4857
4858 if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags) &&
4859 lmp_sc_capable(hdev) &&
4860 !test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
4861 return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
4862 MGMT_STATUS_REJECTED);
4863
4864 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4865 return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
4866 MGMT_STATUS_INVALID_PARAMS);
4867
4868 hci_dev_lock(hdev);
4869
4870 if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) ||
4871 !test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
4872 bool changed;
4873
4874 if (cp->val) {
4875 changed = !test_and_set_bit(HCI_SC_ENABLED,
4876 &hdev->dev_flags);
4877 if (cp->val == 0x02)
4878 set_bit(HCI_SC_ONLY, &hdev->dev_flags);
4879 else
4880 clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
4881 } else {
4882 changed = test_and_clear_bit(HCI_SC_ENABLED,
4883 &hdev->dev_flags);
4884 clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
4885 }
4886
4887 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
4888 if (err < 0)
4889 goto failed;
4890
4891 if (changed)
4892 err = new_settings(hdev, sk);
4893
4894 goto failed;
4895 }
4896
4897 if (mgmt_pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
4898 err = cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
4899 MGMT_STATUS_BUSY);
4900 goto failed;
4901 }
4902
4903 val = !!cp->val;
4904
4905 if (val == test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
4906 (cp->val == 0x02) == test_bit(HCI_SC_ONLY, &hdev->dev_flags)) {
4907 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
4908 goto failed;
4909 }
4910
4911 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
4912 if (!cmd) {
4913 err = -ENOMEM;
4914 goto failed;
4915 }
4916
4917 hci_req_init(&req, hdev);
4918 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
4919 err = hci_req_run(&req, sc_enable_complete);
4920 if (err < 0) {
4921 mgmt_pending_remove(cmd);
4922 goto failed;
4923 }
4924
4925 failed:
4926 hci_dev_unlock(hdev);
4927 return err;
4928 }
4929
4930 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
4931 void *data, u16 len)
4932 {
4933 struct mgmt_mode *cp = data;
4934 bool changed, use_changed;
4935 int err;
4936
4937 BT_DBG("request for %s", hdev->name);
4938
4939 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4940 return cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
4941 MGMT_STATUS_INVALID_PARAMS);
4942
4943 hci_dev_lock(hdev);
4944
4945 if (cp->val)
4946 changed = !test_and_set_bit(HCI_KEEP_DEBUG_KEYS,
4947 &hdev->dev_flags);
4948 else
4949 changed = test_and_clear_bit(HCI_KEEP_DEBUG_KEYS,
4950 &hdev->dev_flags);
4951
4952 if (cp->val == 0x02)
4953 use_changed = !test_and_set_bit(HCI_USE_DEBUG_KEYS,
4954 &hdev->dev_flags);
4955 else
4956 use_changed = test_and_clear_bit(HCI_USE_DEBUG_KEYS,
4957 &hdev->dev_flags);
4958
4959 if (hdev_is_powered(hdev) && use_changed &&
4960 test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
4961 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
4962 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
4963 sizeof(mode), &mode);
4964 }
4965
4966 err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
4967 if (err < 0)
4968 goto unlock;
4969
4970 if (changed)
4971 err = new_settings(hdev, sk);
4972
4973 unlock:
4974 hci_dev_unlock(hdev);
4975 return err;
4976 }
4977
4978 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
4979 u16 len)
4980 {
4981 struct mgmt_cp_set_privacy *cp = cp_data;
4982 bool changed;
4983 int err;
4984
4985 BT_DBG("request for %s", hdev->name);
4986
4987 if (!lmp_le_capable(hdev))
4988 return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
4989 MGMT_STATUS_NOT_SUPPORTED);
4990
4991 if (cp->privacy != 0x00 && cp->privacy != 0x01)
4992 return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
4993 MGMT_STATUS_INVALID_PARAMS);
4994
4995 if (hdev_is_powered(hdev))
4996 return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
4997 MGMT_STATUS_REJECTED);
4998
4999 hci_dev_lock(hdev);
5000
5001 /* If user space supports this command it is also expected to
5002 * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
5003 */
5004 set_bit(HCI_RPA_RESOLVING, &hdev->dev_flags);
5005
5006 if (cp->privacy) {
5007 changed = !test_and_set_bit(HCI_PRIVACY, &hdev->dev_flags);
5008 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
5009 set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
5010 } else {
5011 changed = test_and_clear_bit(HCI_PRIVACY, &hdev->dev_flags);
5012 memset(hdev->irk, 0, sizeof(hdev->irk));
5013 clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
5014 }
5015
5016 err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
5017 if (err < 0)
5018 goto unlock;
5019
5020 if (changed)
5021 err = new_settings(hdev, sk);
5022
5023 unlock:
5024 hci_dev_unlock(hdev);
5025 return err;
5026 }
5027
5028 static bool irk_is_valid(struct mgmt_irk_info *irk)
5029 {
5030 switch (irk->addr.type) {
5031 case BDADDR_LE_PUBLIC:
5032 return true;
5033
5034 case BDADDR_LE_RANDOM:
5035 /* Two most significant bits shall be set */
5036 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5037 return false;
5038 return true;
5039 }
5040
5041 return false;
5042 }
5043
5044 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5045 u16 len)
5046 {
5047 struct mgmt_cp_load_irks *cp = cp_data;
5048 const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) /
5049 sizeof(struct mgmt_irk_info));
5050 u16 irk_count, expected_len;
5051 int i, err;
5052
5053 BT_DBG("request for %s", hdev->name);
5054
5055 if (!lmp_le_capable(hdev))
5056 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5057 MGMT_STATUS_NOT_SUPPORTED);
5058
5059 irk_count = __le16_to_cpu(cp->irk_count);
5060 if (irk_count > max_irk_count) {
5061 BT_ERR("load_irks: too big irk_count value %u", irk_count);
5062 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5063 MGMT_STATUS_INVALID_PARAMS);
5064 }
5065
5066 expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
5067 if (expected_len != len) {
5068 BT_ERR("load_irks: expected %u bytes, got %u bytes",
5069 expected_len, len);
5070 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5071 MGMT_STATUS_INVALID_PARAMS);
5072 }
5073
5074 BT_DBG("%s irk_count %u", hdev->name, irk_count);
5075
5076 for (i = 0; i < irk_count; i++) {
5077 struct mgmt_irk_info *key = &cp->irks[i];
5078
5079 if (!irk_is_valid(key))
5080 return cmd_status(sk, hdev->id,
5081 MGMT_OP_LOAD_IRKS,
5082 MGMT_STATUS_INVALID_PARAMS);
5083 }
5084
5085 hci_dev_lock(hdev);
5086
5087 hci_smp_irks_clear(hdev);
5088
5089 for (i = 0; i < irk_count; i++) {
5090 struct mgmt_irk_info *irk = &cp->irks[i];
5091 u8 addr_type;
5092
5093 if (irk->addr.type == BDADDR_LE_PUBLIC)
5094 addr_type = ADDR_LE_DEV_PUBLIC;
5095 else
5096 addr_type = ADDR_LE_DEV_RANDOM;
5097
5098 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val,
5099 BDADDR_ANY);
5100 }
5101
5102 set_bit(HCI_RPA_RESOLVING, &hdev->dev_flags);
5103
5104 err = cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
5105
5106 hci_dev_unlock(hdev);
5107
5108 return err;
5109 }
5110
5111 static bool ltk_is_valid(struct mgmt_ltk_info *key)
5112 {
5113 if (key->master != 0x00 && key->master != 0x01)
5114 return false;
5115
5116 switch (key->addr.type) {
5117 case BDADDR_LE_PUBLIC:
5118 return true;
5119
5120 case BDADDR_LE_RANDOM:
5121 /* Two most significant bits shall be set */
5122 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5123 return false;
5124 return true;
5125 }
5126
5127 return false;
5128 }
5129
5130 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
5131 void *cp_data, u16 len)
5132 {
5133 struct mgmt_cp_load_long_term_keys *cp = cp_data;
5134 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
5135 sizeof(struct mgmt_ltk_info));
5136 u16 key_count, expected_len;
5137 int i, err;
5138
5139 BT_DBG("request for %s", hdev->name);
5140
5141 if (!lmp_le_capable(hdev))
5142 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5143 MGMT_STATUS_NOT_SUPPORTED);
5144
5145 key_count = __le16_to_cpu(cp->key_count);
5146 if (key_count > max_key_count) {
5147 BT_ERR("load_ltks: too big key_count value %u", key_count);
5148 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5149 MGMT_STATUS_INVALID_PARAMS);
5150 }
5151
5152 expected_len = sizeof(*cp) + key_count *
5153 sizeof(struct mgmt_ltk_info);
5154 if (expected_len != len) {
5155 BT_ERR("load_keys: expected %u bytes, got %u bytes",
5156 expected_len, len);
5157 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5158 MGMT_STATUS_INVALID_PARAMS);
5159 }
5160
5161 BT_DBG("%s key_count %u", hdev->name, key_count);
5162
5163 for (i = 0; i < key_count; i++) {
5164 struct mgmt_ltk_info *key = &cp->keys[i];
5165
5166 if (!ltk_is_valid(key))
5167 return cmd_status(sk, hdev->id,
5168 MGMT_OP_LOAD_LONG_TERM_KEYS,
5169 MGMT_STATUS_INVALID_PARAMS);
5170 }
5171
5172 hci_dev_lock(hdev);
5173
5174 hci_smp_ltks_clear(hdev);
5175
5176 for (i = 0; i < key_count; i++) {
5177 struct mgmt_ltk_info *key = &cp->keys[i];
5178 u8 type, addr_type, authenticated;
5179
5180 if (key->addr.type == BDADDR_LE_PUBLIC)
5181 addr_type = ADDR_LE_DEV_PUBLIC;
5182 else
5183 addr_type = ADDR_LE_DEV_RANDOM;
5184
5185 switch (key->type) {
5186 case MGMT_LTK_UNAUTHENTICATED:
5187 authenticated = 0x00;
5188 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5189 break;
5190 case MGMT_LTK_AUTHENTICATED:
5191 authenticated = 0x01;
5192 type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5193 break;
5194 case MGMT_LTK_P256_UNAUTH:
5195 authenticated = 0x00;
5196 type = SMP_LTK_P256;
5197 break;
5198 case MGMT_LTK_P256_AUTH:
5199 authenticated = 0x01;
5200 type = SMP_LTK_P256;
5201 break;
5202 case MGMT_LTK_P256_DEBUG:
5203 authenticated = 0x00;
5204 type = SMP_LTK_P256_DEBUG;
5205 default:
5206 continue;
5207 }
5208
5209 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type,
5210 authenticated, key->val, key->enc_size, key->ediv,
5211 key->rand);
5212 }
5213
5214 err = cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
5215 NULL, 0);
5216
5217 hci_dev_unlock(hdev);
5218
5219 return err;
5220 }
5221
5222 static int conn_info_cmd_complete(struct pending_cmd *cmd, u8 status)
5223 {
5224 struct hci_conn *conn = cmd->user_data;
5225 struct mgmt_rp_get_conn_info rp;
5226 int err;
5227
5228 memcpy(&rp.addr, cmd->param, sizeof(rp.addr));
5229
5230 if (status == MGMT_STATUS_SUCCESS) {
5231 rp.rssi = conn->rssi;
5232 rp.tx_power = conn->tx_power;
5233 rp.max_tx_power = conn->max_tx_power;
5234 } else {
5235 rp.rssi = HCI_RSSI_INVALID;
5236 rp.tx_power = HCI_TX_POWER_INVALID;
5237 rp.max_tx_power = HCI_TX_POWER_INVALID;
5238 }
5239
5240 err = cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO, status,
5241 &rp, sizeof(rp));
5242
5243 hci_conn_drop(conn);
5244 hci_conn_put(conn);
5245
5246 return err;
5247 }
5248
5249 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status,
5250 u16 opcode)
5251 {
5252 struct hci_cp_read_rssi *cp;
5253 struct pending_cmd *cmd;
5254 struct hci_conn *conn;
5255 u16 handle;
5256 u8 status;
5257
5258 BT_DBG("status 0x%02x", hci_status);
5259
5260 hci_dev_lock(hdev);
5261
5262 /* Commands sent in request are either Read RSSI or Read Transmit Power
5263 * Level so we check which one was last sent to retrieve connection
5264 * handle. Both commands have handle as first parameter so it's safe to
5265 * cast data on the same command struct.
5266 *
5267 * First command sent is always Read RSSI and we fail only if it fails.
5268 * In other case we simply override error to indicate success as we
5269 * already remembered if TX power value is actually valid.
5270 */
5271 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI);
5272 if (!cp) {
5273 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
5274 status = MGMT_STATUS_SUCCESS;
5275 } else {
5276 status = mgmt_status(hci_status);
5277 }
5278
5279 if (!cp) {
5280 BT_ERR("invalid sent_cmd in conn_info response");
5281 goto unlock;
5282 }
5283
5284 handle = __le16_to_cpu(cp->handle);
5285 conn = hci_conn_hash_lookup_handle(hdev, handle);
5286 if (!conn) {
5287 BT_ERR("unknown handle (%d) in conn_info response", handle);
5288 goto unlock;
5289 }
5290
5291 cmd = mgmt_pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn);
5292 if (!cmd)
5293 goto unlock;
5294
5295 cmd->cmd_complete(cmd, status);
5296 mgmt_pending_remove(cmd);
5297
5298 unlock:
5299 hci_dev_unlock(hdev);
5300 }
5301
5302 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
5303 u16 len)
5304 {
5305 struct mgmt_cp_get_conn_info *cp = data;
5306 struct mgmt_rp_get_conn_info rp;
5307 struct hci_conn *conn;
5308 unsigned long conn_info_age;
5309 int err = 0;
5310
5311 BT_DBG("%s", hdev->name);
5312
5313 memset(&rp, 0, sizeof(rp));
5314 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5315 rp.addr.type = cp->addr.type;
5316
5317 if (!bdaddr_type_is_valid(cp->addr.type))
5318 return cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5319 MGMT_STATUS_INVALID_PARAMS,
5320 &rp, sizeof(rp));
5321
5322 hci_dev_lock(hdev);
5323
5324 if (!hdev_is_powered(hdev)) {
5325 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5326 MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
5327 goto unlock;
5328 }
5329
5330 if (cp->addr.type == BDADDR_BREDR)
5331 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5332 &cp->addr.bdaddr);
5333 else
5334 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
5335
5336 if (!conn || conn->state != BT_CONNECTED) {
5337 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5338 MGMT_STATUS_NOT_CONNECTED, &rp, sizeof(rp));
5339 goto unlock;
5340 }
5341
5342 if (mgmt_pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) {
5343 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5344 MGMT_STATUS_BUSY, &rp, sizeof(rp));
5345 goto unlock;
5346 }
5347
5348 /* To avoid client trying to guess when to poll again for information we
5349 * calculate conn info age as random value between min/max set in hdev.
5350 */
5351 conn_info_age = hdev->conn_info_min_age +
5352 prandom_u32_max(hdev->conn_info_max_age -
5353 hdev->conn_info_min_age);
5354
5355 /* Query controller to refresh cached values if they are too old or were
5356 * never read.
5357 */
5358 if (time_after(jiffies, conn->conn_info_timestamp +
5359 msecs_to_jiffies(conn_info_age)) ||
5360 !conn->conn_info_timestamp) {
5361 struct hci_request req;
5362 struct hci_cp_read_tx_power req_txp_cp;
5363 struct hci_cp_read_rssi req_rssi_cp;
5364 struct pending_cmd *cmd;
5365
5366 hci_req_init(&req, hdev);
5367 req_rssi_cp.handle = cpu_to_le16(conn->handle);
5368 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp),
5369 &req_rssi_cp);
5370
5371 /* For LE links TX power does not change thus we don't need to
5372 * query for it once value is known.
5373 */
5374 if (!bdaddr_type_is_le(cp->addr.type) ||
5375 conn->tx_power == HCI_TX_POWER_INVALID) {
5376 req_txp_cp.handle = cpu_to_le16(conn->handle);
5377 req_txp_cp.type = 0x00;
5378 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5379 sizeof(req_txp_cp), &req_txp_cp);
5380 }
5381
5382 /* Max TX power needs to be read only once per connection */
5383 if (conn->max_tx_power == HCI_TX_POWER_INVALID) {
5384 req_txp_cp.handle = cpu_to_le16(conn->handle);
5385 req_txp_cp.type = 0x01;
5386 hci_req_add(&req, HCI_OP_READ_TX_POWER,
5387 sizeof(req_txp_cp), &req_txp_cp);
5388 }
5389
5390 err = hci_req_run(&req, conn_info_refresh_complete);
5391 if (err < 0)
5392 goto unlock;
5393
5394 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev,
5395 data, len);
5396 if (!cmd) {
5397 err = -ENOMEM;
5398 goto unlock;
5399 }
5400
5401 hci_conn_hold(conn);
5402 cmd->user_data = hci_conn_get(conn);
5403 cmd->cmd_complete = conn_info_cmd_complete;
5404
5405 conn->conn_info_timestamp = jiffies;
5406 } else {
5407 /* Cache is valid, just reply with values cached in hci_conn */
5408 rp.rssi = conn->rssi;
5409 rp.tx_power = conn->tx_power;
5410 rp.max_tx_power = conn->max_tx_power;
5411
5412 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5413 MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
5414 }
5415
5416 unlock:
5417 hci_dev_unlock(hdev);
5418 return err;
5419 }
5420
5421 static int clock_info_cmd_complete(struct pending_cmd *cmd, u8 status)
5422 {
5423 struct hci_conn *conn = cmd->user_data;
5424 struct mgmt_rp_get_clock_info rp;
5425 struct hci_dev *hdev;
5426 int err;
5427
5428 memset(&rp, 0, sizeof(rp));
5429 memcpy(&rp.addr, &cmd->param, sizeof(rp.addr));
5430
5431 if (status)
5432 goto complete;
5433
5434 hdev = hci_dev_get(cmd->index);
5435 if (hdev) {
5436 rp.local_clock = cpu_to_le32(hdev->clock);
5437 hci_dev_put(hdev);
5438 }
5439
5440 if (conn) {
5441 rp.piconet_clock = cpu_to_le32(conn->clock);
5442 rp.accuracy = cpu_to_le16(conn->clock_accuracy);
5443 }
5444
5445 complete:
5446 err = cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp,
5447 sizeof(rp));
5448
5449 if (conn) {
5450 hci_conn_drop(conn);
5451 hci_conn_put(conn);
5452 }
5453
5454 return err;
5455 }
5456
5457 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5458 {
5459 struct hci_cp_read_clock *hci_cp;
5460 struct pending_cmd *cmd;
5461 struct hci_conn *conn;
5462
5463 BT_DBG("%s status %u", hdev->name, status);
5464
5465 hci_dev_lock(hdev);
5466
5467 hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
5468 if (!hci_cp)
5469 goto unlock;
5470
5471 if (hci_cp->which) {
5472 u16 handle = __le16_to_cpu(hci_cp->handle);
5473 conn = hci_conn_hash_lookup_handle(hdev, handle);
5474 } else {
5475 conn = NULL;
5476 }
5477
5478 cmd = mgmt_pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn);
5479 if (!cmd)
5480 goto unlock;
5481
5482 cmd->cmd_complete(cmd, mgmt_status(status));
5483 mgmt_pending_remove(cmd);
5484
5485 unlock:
5486 hci_dev_unlock(hdev);
5487 }
5488
5489 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data,
5490 u16 len)
5491 {
5492 struct mgmt_cp_get_clock_info *cp = data;
5493 struct mgmt_rp_get_clock_info rp;
5494 struct hci_cp_read_clock hci_cp;
5495 struct pending_cmd *cmd;
5496 struct hci_request req;
5497 struct hci_conn *conn;
5498 int err;
5499
5500 BT_DBG("%s", hdev->name);
5501
5502 memset(&rp, 0, sizeof(rp));
5503 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5504 rp.addr.type = cp->addr.type;
5505
5506 if (cp->addr.type != BDADDR_BREDR)
5507 return cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
5508 MGMT_STATUS_INVALID_PARAMS,
5509 &rp, sizeof(rp));
5510
5511 hci_dev_lock(hdev);
5512
5513 if (!hdev_is_powered(hdev)) {
5514 err = cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
5515 MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
5516 goto unlock;
5517 }
5518
5519 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
5520 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5521 &cp->addr.bdaddr);
5522 if (!conn || conn->state != BT_CONNECTED) {
5523 err = cmd_complete(sk, hdev->id,
5524 MGMT_OP_GET_CLOCK_INFO,
5525 MGMT_STATUS_NOT_CONNECTED,
5526 &rp, sizeof(rp));
5527 goto unlock;
5528 }
5529 } else {
5530 conn = NULL;
5531 }
5532
5533 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len);
5534 if (!cmd) {
5535 err = -ENOMEM;
5536 goto unlock;
5537 }
5538
5539 cmd->cmd_complete = clock_info_cmd_complete;
5540
5541 hci_req_init(&req, hdev);
5542
5543 memset(&hci_cp, 0, sizeof(hci_cp));
5544 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
5545
5546 if (conn) {
5547 hci_conn_hold(conn);
5548 cmd->user_data = hci_conn_get(conn);
5549
5550 hci_cp.handle = cpu_to_le16(conn->handle);
5551 hci_cp.which = 0x01; /* Piconet clock */
5552 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
5553 }
5554
5555 err = hci_req_run(&req, get_clock_info_complete);
5556 if (err < 0)
5557 mgmt_pending_remove(cmd);
5558
5559 unlock:
5560 hci_dev_unlock(hdev);
5561 return err;
5562 }
5563
5564 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
5565 {
5566 struct hci_conn *conn;
5567
5568 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
5569 if (!conn)
5570 return false;
5571
5572 if (conn->dst_type != type)
5573 return false;
5574
5575 if (conn->state != BT_CONNECTED)
5576 return false;
5577
5578 return true;
5579 }
5580
5581 /* This function requires the caller holds hdev->lock */
5582 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
5583 u8 addr_type, u8 auto_connect)
5584 {
5585 struct hci_dev *hdev = req->hdev;
5586 struct hci_conn_params *params;
5587
5588 params = hci_conn_params_add(hdev, addr, addr_type);
5589 if (!params)
5590 return -EIO;
5591
5592 if (params->auto_connect == auto_connect)
5593 return 0;
5594
5595 list_del_init(&params->action);
5596
5597 switch (auto_connect) {
5598 case HCI_AUTO_CONN_DISABLED:
5599 case HCI_AUTO_CONN_LINK_LOSS:
5600 __hci_update_background_scan(req);
5601 break;
5602 case HCI_AUTO_CONN_REPORT:
5603 list_add(&params->action, &hdev->pend_le_reports);
5604 __hci_update_background_scan(req);
5605 break;
5606 case HCI_AUTO_CONN_DIRECT:
5607 case HCI_AUTO_CONN_ALWAYS:
5608 if (!is_connected(hdev, addr, addr_type)) {
5609 list_add(&params->action, &hdev->pend_le_conns);
5610 __hci_update_background_scan(req);
5611 }
5612 break;
5613 }
5614
5615 params->auto_connect = auto_connect;
5616
5617 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
5618 auto_connect);
5619
5620 return 0;
5621 }
5622
5623 static void device_added(struct sock *sk, struct hci_dev *hdev,
5624 bdaddr_t *bdaddr, u8 type, u8 action)
5625 {
5626 struct mgmt_ev_device_added ev;
5627
5628 bacpy(&ev.addr.bdaddr, bdaddr);
5629 ev.addr.type = type;
5630 ev.action = action;
5631
5632 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
5633 }
5634
5635 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5636 {
5637 struct pending_cmd *cmd;
5638
5639 BT_DBG("status 0x%02x", status);
5640
5641 hci_dev_lock(hdev);
5642
5643 cmd = mgmt_pending_find(MGMT_OP_ADD_DEVICE, hdev);
5644 if (!cmd)
5645 goto unlock;
5646
5647 cmd->cmd_complete(cmd, mgmt_status(status));
5648 mgmt_pending_remove(cmd);
5649
5650 unlock:
5651 hci_dev_unlock(hdev);
5652 }
5653
5654 static int add_device(struct sock *sk, struct hci_dev *hdev,
5655 void *data, u16 len)
5656 {
5657 struct mgmt_cp_add_device *cp = data;
5658 struct pending_cmd *cmd;
5659 struct hci_request req;
5660 u8 auto_conn, addr_type;
5661 int err;
5662
5663 BT_DBG("%s", hdev->name);
5664
5665 if (!bdaddr_type_is_valid(cp->addr.type) ||
5666 !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
5667 return cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
5668 MGMT_STATUS_INVALID_PARAMS,
5669 &cp->addr, sizeof(cp->addr));
5670
5671 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
5672 return cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
5673 MGMT_STATUS_INVALID_PARAMS,
5674 &cp->addr, sizeof(cp->addr));
5675
5676 hci_req_init(&req, hdev);
5677
5678 hci_dev_lock(hdev);
5679
5680 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
5681 if (!cmd) {
5682 err = -ENOMEM;
5683 goto unlock;
5684 }
5685
5686 cmd->cmd_complete = addr_cmd_complete;
5687
5688 if (cp->addr.type == BDADDR_BREDR) {
5689 /* Only incoming connections action is supported for now */
5690 if (cp->action != 0x01) {
5691 err = cmd->cmd_complete(cmd,
5692 MGMT_STATUS_INVALID_PARAMS);
5693 mgmt_pending_remove(cmd);
5694 goto unlock;
5695 }
5696
5697 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
5698 cp->addr.type);
5699 if (err)
5700 goto unlock;
5701
5702 __hci_update_page_scan(&req);
5703
5704 goto added;
5705 }
5706
5707 if (cp->addr.type == BDADDR_LE_PUBLIC)
5708 addr_type = ADDR_LE_DEV_PUBLIC;
5709 else
5710 addr_type = ADDR_LE_DEV_RANDOM;
5711
5712 if (cp->action == 0x02)
5713 auto_conn = HCI_AUTO_CONN_ALWAYS;
5714 else if (cp->action == 0x01)
5715 auto_conn = HCI_AUTO_CONN_DIRECT;
5716 else
5717 auto_conn = HCI_AUTO_CONN_REPORT;
5718
5719 /* If the connection parameters don't exist for this device,
5720 * they will be created and configured with defaults.
5721 */
5722 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
5723 auto_conn) < 0) {
5724 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
5725 mgmt_pending_remove(cmd);
5726 goto unlock;
5727 }
5728
5729 added:
5730 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
5731
5732 err = hci_req_run(&req, add_device_complete);
5733 if (err < 0) {
5734 /* ENODATA means no HCI commands were needed (e.g. if
5735 * the adapter is powered off).
5736 */
5737 if (err == -ENODATA)
5738 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
5739 mgmt_pending_remove(cmd);
5740 }
5741
5742 unlock:
5743 hci_dev_unlock(hdev);
5744 return err;
5745 }
5746
5747 static void device_removed(struct sock *sk, struct hci_dev *hdev,
5748 bdaddr_t *bdaddr, u8 type)
5749 {
5750 struct mgmt_ev_device_removed ev;
5751
5752 bacpy(&ev.addr.bdaddr, bdaddr);
5753 ev.addr.type = type;
5754
5755 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
5756 }
5757
5758 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5759 {
5760 struct pending_cmd *cmd;
5761
5762 BT_DBG("status 0x%02x", status);
5763
5764 hci_dev_lock(hdev);
5765
5766 cmd = mgmt_pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
5767 if (!cmd)
5768 goto unlock;
5769
5770 cmd->cmd_complete(cmd, mgmt_status(status));
5771 mgmt_pending_remove(cmd);
5772
5773 unlock:
5774 hci_dev_unlock(hdev);
5775 }
5776
5777 static int remove_device(struct sock *sk, struct hci_dev *hdev,
5778 void *data, u16 len)
5779 {
5780 struct mgmt_cp_remove_device *cp = data;
5781 struct pending_cmd *cmd;
5782 struct hci_request req;
5783 int err;
5784
5785 BT_DBG("%s", hdev->name);
5786
5787 hci_req_init(&req, hdev);
5788
5789 hci_dev_lock(hdev);
5790
5791 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
5792 if (!cmd) {
5793 err = -ENOMEM;
5794 goto unlock;
5795 }
5796
5797 cmd->cmd_complete = addr_cmd_complete;
5798
5799 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
5800 struct hci_conn_params *params;
5801 u8 addr_type;
5802
5803 if (!bdaddr_type_is_valid(cp->addr.type)) {
5804 err = cmd->cmd_complete(cmd,
5805 MGMT_STATUS_INVALID_PARAMS);
5806 mgmt_pending_remove(cmd);
5807 goto unlock;
5808 }
5809
5810 if (cp->addr.type == BDADDR_BREDR) {
5811 err = hci_bdaddr_list_del(&hdev->whitelist,
5812 &cp->addr.bdaddr,
5813 cp->addr.type);
5814 if (err) {
5815 err = cmd->cmd_complete(cmd,
5816 MGMT_STATUS_INVALID_PARAMS);
5817 mgmt_pending_remove(cmd);
5818 goto unlock;
5819 }
5820
5821 __hci_update_page_scan(&req);
5822
5823 device_removed(sk, hdev, &cp->addr.bdaddr,
5824 cp->addr.type);
5825 goto complete;
5826 }
5827
5828 if (cp->addr.type == BDADDR_LE_PUBLIC)
5829 addr_type = ADDR_LE_DEV_PUBLIC;
5830 else
5831 addr_type = ADDR_LE_DEV_RANDOM;
5832
5833 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
5834 addr_type);
5835 if (!params) {
5836 err = cmd->cmd_complete(cmd,
5837 MGMT_STATUS_INVALID_PARAMS);
5838 mgmt_pending_remove(cmd);
5839 goto unlock;
5840 }
5841
5842 if (params->auto_connect == HCI_AUTO_CONN_DISABLED) {
5843 err = cmd->cmd_complete(cmd,
5844 MGMT_STATUS_INVALID_PARAMS);
5845 mgmt_pending_remove(cmd);
5846 goto unlock;
5847 }
5848
5849 list_del(&params->action);
5850 list_del(&params->list);
5851 kfree(params);
5852 __hci_update_background_scan(&req);
5853
5854 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
5855 } else {
5856 struct hci_conn_params *p, *tmp;
5857 struct bdaddr_list *b, *btmp;
5858
5859 if (cp->addr.type) {
5860 err = cmd->cmd_complete(cmd,
5861 MGMT_STATUS_INVALID_PARAMS);
5862 mgmt_pending_remove(cmd);
5863 goto unlock;
5864 }
5865
5866 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
5867 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
5868 list_del(&b->list);
5869 kfree(b);
5870 }
5871
5872 __hci_update_page_scan(&req);
5873
5874 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
5875 if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
5876 continue;
5877 device_removed(sk, hdev, &p->addr, p->addr_type);
5878 list_del(&p->action);
5879 list_del(&p->list);
5880 kfree(p);
5881 }
5882
5883 BT_DBG("All LE connection parameters were removed");
5884
5885 __hci_update_background_scan(&req);
5886 }
5887
5888 complete:
5889 err = hci_req_run(&req, remove_device_complete);
5890 if (err < 0) {
5891 /* ENODATA means no HCI commands were needed (e.g. if
5892 * the adapter is powered off).
5893 */
5894 if (err == -ENODATA)
5895 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
5896 mgmt_pending_remove(cmd);
5897 }
5898
5899 unlock:
5900 hci_dev_unlock(hdev);
5901 return err;
5902 }
5903
5904 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
5905 u16 len)
5906 {
5907 struct mgmt_cp_load_conn_param *cp = data;
5908 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
5909 sizeof(struct mgmt_conn_param));
5910 u16 param_count, expected_len;
5911 int i;
5912
5913 if (!lmp_le_capable(hdev))
5914 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
5915 MGMT_STATUS_NOT_SUPPORTED);
5916
5917 param_count = __le16_to_cpu(cp->param_count);
5918 if (param_count > max_param_count) {
5919 BT_ERR("load_conn_param: too big param_count value %u",
5920 param_count);
5921 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
5922 MGMT_STATUS_INVALID_PARAMS);
5923 }
5924
5925 expected_len = sizeof(*cp) + param_count *
5926 sizeof(struct mgmt_conn_param);
5927 if (expected_len != len) {
5928 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
5929 expected_len, len);
5930 return cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
5931 MGMT_STATUS_INVALID_PARAMS);
5932 }
5933
5934 BT_DBG("%s param_count %u", hdev->name, param_count);
5935
5936 hci_dev_lock(hdev);
5937
5938 hci_conn_params_clear_disabled(hdev);
5939
5940 for (i = 0; i < param_count; i++) {
5941 struct mgmt_conn_param *param = &cp->params[i];
5942 struct hci_conn_params *hci_param;
5943 u16 min, max, latency, timeout;
5944 u8 addr_type;
5945
5946 BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
5947 param->addr.type);
5948
5949 if (param->addr.type == BDADDR_LE_PUBLIC) {
5950 addr_type = ADDR_LE_DEV_PUBLIC;
5951 } else if (param->addr.type == BDADDR_LE_RANDOM) {
5952 addr_type = ADDR_LE_DEV_RANDOM;
5953 } else {
5954 BT_ERR("Ignoring invalid connection parameters");
5955 continue;
5956 }
5957
5958 min = le16_to_cpu(param->min_interval);
5959 max = le16_to_cpu(param->max_interval);
5960 latency = le16_to_cpu(param->latency);
5961 timeout = le16_to_cpu(param->timeout);
5962
5963 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
5964 min, max, latency, timeout);
5965
5966 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
5967 BT_ERR("Ignoring invalid connection parameters");
5968 continue;
5969 }
5970
5971 hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
5972 addr_type);
5973 if (!hci_param) {
5974 BT_ERR("Failed to add connection parameters");
5975 continue;
5976 }
5977
5978 hci_param->conn_min_interval = min;
5979 hci_param->conn_max_interval = max;
5980 hci_param->conn_latency = latency;
5981 hci_param->supervision_timeout = timeout;
5982 }
5983
5984 hci_dev_unlock(hdev);
5985
5986 return cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, NULL, 0);
5987 }
5988
5989 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
5990 void *data, u16 len)
5991 {
5992 struct mgmt_cp_set_external_config *cp = data;
5993 bool changed;
5994 int err;
5995
5996 BT_DBG("%s", hdev->name);
5997
5998 if (hdev_is_powered(hdev))
5999 return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6000 MGMT_STATUS_REJECTED);
6001
6002 if (cp->config != 0x00 && cp->config != 0x01)
6003 return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6004 MGMT_STATUS_INVALID_PARAMS);
6005
6006 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6007 return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6008 MGMT_STATUS_NOT_SUPPORTED);
6009
6010 hci_dev_lock(hdev);
6011
6012 if (cp->config)
6013 changed = !test_and_set_bit(HCI_EXT_CONFIGURED,
6014 &hdev->dev_flags);
6015 else
6016 changed = test_and_clear_bit(HCI_EXT_CONFIGURED,
6017 &hdev->dev_flags);
6018
6019 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6020 if (err < 0)
6021 goto unlock;
6022
6023 if (!changed)
6024 goto unlock;
6025
6026 err = new_options(hdev, sk);
6027
6028 if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) == is_configured(hdev)) {
6029 mgmt_index_removed(hdev);
6030
6031 if (test_and_change_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) {
6032 set_bit(HCI_CONFIG, &hdev->dev_flags);
6033 set_bit(HCI_AUTO_OFF, &hdev->dev_flags);
6034
6035 queue_work(hdev->req_workqueue, &hdev->power_on);
6036 } else {
6037 set_bit(HCI_RAW, &hdev->flags);
6038 mgmt_index_added(hdev);
6039 }
6040 }
6041
6042 unlock:
6043 hci_dev_unlock(hdev);
6044 return err;
6045 }
6046
6047 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6048 void *data, u16 len)
6049 {
6050 struct mgmt_cp_set_public_address *cp = data;
6051 bool changed;
6052 int err;
6053
6054 BT_DBG("%s", hdev->name);
6055
6056 if (hdev_is_powered(hdev))
6057 return cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6058 MGMT_STATUS_REJECTED);
6059
6060 if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6061 return cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6062 MGMT_STATUS_INVALID_PARAMS);
6063
6064 if (!hdev->set_bdaddr)
6065 return cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6066 MGMT_STATUS_NOT_SUPPORTED);
6067
6068 hci_dev_lock(hdev);
6069
6070 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6071 bacpy(&hdev->public_addr, &cp->bdaddr);
6072
6073 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6074 if (err < 0)
6075 goto unlock;
6076
6077 if (!changed)
6078 goto unlock;
6079
6080 if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags))
6081 err = new_options(hdev, sk);
6082
6083 if (is_configured(hdev)) {
6084 mgmt_index_removed(hdev);
6085
6086 clear_bit(HCI_UNCONFIGURED, &hdev->dev_flags);
6087
6088 set_bit(HCI_CONFIG, &hdev->dev_flags);
6089 set_bit(HCI_AUTO_OFF, &hdev->dev_flags);
6090
6091 queue_work(hdev->req_workqueue, &hdev->power_on);
6092 }
6093
6094 unlock:
6095 hci_dev_unlock(hdev);
6096 return err;
6097 }
6098
6099 static const struct mgmt_handler {
6100 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
6101 u16 data_len);
6102 bool var_len;
6103 size_t data_len;
6104 } mgmt_handlers[] = {
6105 { NULL }, /* 0x0000 (no command) */
6106 { read_version, false, MGMT_READ_VERSION_SIZE },
6107 { read_commands, false, MGMT_READ_COMMANDS_SIZE },
6108 { read_index_list, false, MGMT_READ_INDEX_LIST_SIZE },
6109 { read_controller_info, false, MGMT_READ_INFO_SIZE },
6110 { set_powered, false, MGMT_SETTING_SIZE },
6111 { set_discoverable, false, MGMT_SET_DISCOVERABLE_SIZE },
6112 { set_connectable, false, MGMT_SETTING_SIZE },
6113 { set_fast_connectable, false, MGMT_SETTING_SIZE },
6114 { set_bondable, false, MGMT_SETTING_SIZE },
6115 { set_link_security, false, MGMT_SETTING_SIZE },
6116 { set_ssp, false, MGMT_SETTING_SIZE },
6117 { set_hs, false, MGMT_SETTING_SIZE },
6118 { set_le, false, MGMT_SETTING_SIZE },
6119 { set_dev_class, false, MGMT_SET_DEV_CLASS_SIZE },
6120 { set_local_name, false, MGMT_SET_LOCAL_NAME_SIZE },
6121 { add_uuid, false, MGMT_ADD_UUID_SIZE },
6122 { remove_uuid, false, MGMT_REMOVE_UUID_SIZE },
6123 { load_link_keys, true, MGMT_LOAD_LINK_KEYS_SIZE },
6124 { load_long_term_keys, true, MGMT_LOAD_LONG_TERM_KEYS_SIZE },
6125 { disconnect, false, MGMT_DISCONNECT_SIZE },
6126 { get_connections, false, MGMT_GET_CONNECTIONS_SIZE },
6127 { pin_code_reply, false, MGMT_PIN_CODE_REPLY_SIZE },
6128 { pin_code_neg_reply, false, MGMT_PIN_CODE_NEG_REPLY_SIZE },
6129 { set_io_capability, false, MGMT_SET_IO_CAPABILITY_SIZE },
6130 { pair_device, false, MGMT_PAIR_DEVICE_SIZE },
6131 { cancel_pair_device, false, MGMT_CANCEL_PAIR_DEVICE_SIZE },
6132 { unpair_device, false, MGMT_UNPAIR_DEVICE_SIZE },
6133 { user_confirm_reply, false, MGMT_USER_CONFIRM_REPLY_SIZE },
6134 { user_confirm_neg_reply, false, MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
6135 { user_passkey_reply, false, MGMT_USER_PASSKEY_REPLY_SIZE },
6136 { user_passkey_neg_reply, false, MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
6137 { read_local_oob_data, false, MGMT_READ_LOCAL_OOB_DATA_SIZE },
6138 { add_remote_oob_data, true, MGMT_ADD_REMOTE_OOB_DATA_SIZE },
6139 { remove_remote_oob_data, false, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
6140 { start_discovery, false, MGMT_START_DISCOVERY_SIZE },
6141 { stop_discovery, false, MGMT_STOP_DISCOVERY_SIZE },
6142 { confirm_name, false, MGMT_CONFIRM_NAME_SIZE },
6143 { block_device, false, MGMT_BLOCK_DEVICE_SIZE },
6144 { unblock_device, false, MGMT_UNBLOCK_DEVICE_SIZE },
6145 { set_device_id, false, MGMT_SET_DEVICE_ID_SIZE },
6146 { set_advertising, false, MGMT_SETTING_SIZE },
6147 { set_bredr, false, MGMT_SETTING_SIZE },
6148 { set_static_address, false, MGMT_SET_STATIC_ADDRESS_SIZE },
6149 { set_scan_params, false, MGMT_SET_SCAN_PARAMS_SIZE },
6150 { set_secure_conn, false, MGMT_SETTING_SIZE },
6151 { set_debug_keys, false, MGMT_SETTING_SIZE },
6152 { set_privacy, false, MGMT_SET_PRIVACY_SIZE },
6153 { load_irks, true, MGMT_LOAD_IRKS_SIZE },
6154 { get_conn_info, false, MGMT_GET_CONN_INFO_SIZE },
6155 { get_clock_info, false, MGMT_GET_CLOCK_INFO_SIZE },
6156 { add_device, false, MGMT_ADD_DEVICE_SIZE },
6157 { remove_device, false, MGMT_REMOVE_DEVICE_SIZE },
6158 { load_conn_param, true, MGMT_LOAD_CONN_PARAM_SIZE },
6159 { read_unconf_index_list, false, MGMT_READ_UNCONF_INDEX_LIST_SIZE },
6160 { read_config_info, false, MGMT_READ_CONFIG_INFO_SIZE },
6161 { set_external_config, false, MGMT_SET_EXTERNAL_CONFIG_SIZE },
6162 { set_public_address, false, MGMT_SET_PUBLIC_ADDRESS_SIZE },
6163 { start_service_discovery,true, MGMT_START_SERVICE_DISCOVERY_SIZE },
6164 };
6165
6166 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
6167 {
6168 void *buf;
6169 u8 *cp;
6170 struct mgmt_hdr *hdr;
6171 u16 opcode, index, len;
6172 struct hci_dev *hdev = NULL;
6173 const struct mgmt_handler *handler;
6174 int err;
6175
6176 BT_DBG("got %zu bytes", msglen);
6177
6178 if (msglen < sizeof(*hdr))
6179 return -EINVAL;
6180
6181 buf = kmalloc(msglen, GFP_KERNEL);
6182 if (!buf)
6183 return -ENOMEM;
6184
6185 if (memcpy_from_msg(buf, msg, msglen)) {
6186 err = -EFAULT;
6187 goto done;
6188 }
6189
6190 hdr = buf;
6191 opcode = __le16_to_cpu(hdr->opcode);
6192 index = __le16_to_cpu(hdr->index);
6193 len = __le16_to_cpu(hdr->len);
6194
6195 if (len != msglen - sizeof(*hdr)) {
6196 err = -EINVAL;
6197 goto done;
6198 }
6199
6200 if (index != MGMT_INDEX_NONE) {
6201 hdev = hci_dev_get(index);
6202 if (!hdev) {
6203 err = cmd_status(sk, index, opcode,
6204 MGMT_STATUS_INVALID_INDEX);
6205 goto done;
6206 }
6207
6208 if (test_bit(HCI_SETUP, &hdev->dev_flags) ||
6209 test_bit(HCI_CONFIG, &hdev->dev_flags) ||
6210 test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) {
6211 err = cmd_status(sk, index, opcode,
6212 MGMT_STATUS_INVALID_INDEX);
6213 goto done;
6214 }
6215
6216 if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) &&
6217 opcode != MGMT_OP_READ_CONFIG_INFO &&
6218 opcode != MGMT_OP_SET_EXTERNAL_CONFIG &&
6219 opcode != MGMT_OP_SET_PUBLIC_ADDRESS) {
6220 err = cmd_status(sk, index, opcode,
6221 MGMT_STATUS_INVALID_INDEX);
6222 goto done;
6223 }
6224 }
6225
6226 if (opcode >= ARRAY_SIZE(mgmt_handlers) ||
6227 mgmt_handlers[opcode].func == NULL) {
6228 BT_DBG("Unknown op %u", opcode);
6229 err = cmd_status(sk, index, opcode,
6230 MGMT_STATUS_UNKNOWN_COMMAND);
6231 goto done;
6232 }
6233
6234 if (hdev && (opcode <= MGMT_OP_READ_INDEX_LIST ||
6235 opcode == MGMT_OP_READ_UNCONF_INDEX_LIST)) {
6236 err = cmd_status(sk, index, opcode,
6237 MGMT_STATUS_INVALID_INDEX);
6238 goto done;
6239 }
6240
6241 if (!hdev && (opcode > MGMT_OP_READ_INDEX_LIST &&
6242 opcode != MGMT_OP_READ_UNCONF_INDEX_LIST)) {
6243 err = cmd_status(sk, index, opcode,
6244 MGMT_STATUS_INVALID_INDEX);
6245 goto done;
6246 }
6247
6248 handler = &mgmt_handlers[opcode];
6249
6250 if ((handler->var_len && len < handler->data_len) ||
6251 (!handler->var_len && len != handler->data_len)) {
6252 err = cmd_status(sk, index, opcode,
6253 MGMT_STATUS_INVALID_PARAMS);
6254 goto done;
6255 }
6256
6257 if (hdev)
6258 mgmt_init_hdev(sk, hdev);
6259
6260 cp = buf + sizeof(*hdr);
6261
6262 err = handler->func(sk, hdev, cp, len);
6263 if (err < 0)
6264 goto done;
6265
6266 err = msglen;
6267
6268 done:
6269 if (hdev)
6270 hci_dev_put(hdev);
6271
6272 kfree(buf);
6273 return err;
6274 }
6275
6276 void mgmt_index_added(struct hci_dev *hdev)
6277 {
6278 if (hdev->dev_type != HCI_BREDR)
6279 return;
6280
6281 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
6282 return;
6283
6284 if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags))
6285 mgmt_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev, NULL, 0, NULL);
6286 else
6287 mgmt_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, NULL);
6288 }
6289
6290 void mgmt_index_removed(struct hci_dev *hdev)
6291 {
6292 u8 status = MGMT_STATUS_INVALID_INDEX;
6293
6294 if (hdev->dev_type != HCI_BREDR)
6295 return;
6296
6297 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
6298 return;
6299
6300 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
6301
6302 if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags))
6303 mgmt_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev, NULL, 0, NULL);
6304 else
6305 mgmt_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, NULL);
6306 }
6307
6308 /* This function requires the caller holds hdev->lock */
6309 static void restart_le_actions(struct hci_request *req)
6310 {
6311 struct hci_dev *hdev = req->hdev;
6312 struct hci_conn_params *p;
6313
6314 list_for_each_entry(p, &hdev->le_conn_params, list) {
6315 /* Needed for AUTO_OFF case where might not "really"
6316 * have been powered off.
6317 */
6318 list_del_init(&p->action);
6319
6320 switch (p->auto_connect) {
6321 case HCI_AUTO_CONN_DIRECT:
6322 case HCI_AUTO_CONN_ALWAYS:
6323 list_add(&p->action, &hdev->pend_le_conns);
6324 break;
6325 case HCI_AUTO_CONN_REPORT:
6326 list_add(&p->action, &hdev->pend_le_reports);
6327 break;
6328 default:
6329 break;
6330 }
6331 }
6332
6333 __hci_update_background_scan(req);
6334 }
6335
6336 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6337 {
6338 struct cmd_lookup match = { NULL, hdev };
6339
6340 BT_DBG("status 0x%02x", status);
6341
6342 if (!status) {
6343 /* Register the available SMP channels (BR/EDR and LE) only
6344 * when successfully powering on the controller. This late
6345 * registration is required so that LE SMP can clearly
6346 * decide if the public address or static address is used.
6347 */
6348 smp_register(hdev);
6349 }
6350
6351 hci_dev_lock(hdev);
6352
6353 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
6354
6355 new_settings(hdev, match.sk);
6356
6357 hci_dev_unlock(hdev);
6358
6359 if (match.sk)
6360 sock_put(match.sk);
6361 }
6362
6363 static int powered_update_hci(struct hci_dev *hdev)
6364 {
6365 struct hci_request req;
6366 u8 link_sec;
6367
6368 hci_req_init(&req, hdev);
6369
6370 if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
6371 !lmp_host_ssp_capable(hdev)) {
6372 u8 mode = 0x01;
6373
6374 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
6375
6376 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
6377 u8 support = 0x01;
6378
6379 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
6380 sizeof(support), &support);
6381 }
6382 }
6383
6384 if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags) &&
6385 lmp_bredr_capable(hdev)) {
6386 struct hci_cp_write_le_host_supported cp;
6387
6388 cp.le = 0x01;
6389 cp.simul = 0x00;
6390
6391 /* Check first if we already have the right
6392 * host state (host features set)
6393 */
6394 if (cp.le != lmp_host_le_capable(hdev) ||
6395 cp.simul != lmp_host_le_br_capable(hdev))
6396 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
6397 sizeof(cp), &cp);
6398 }
6399
6400 if (lmp_le_capable(hdev)) {
6401 /* Make sure the controller has a good default for
6402 * advertising data. This also applies to the case
6403 * where BR/EDR was toggled during the AUTO_OFF phase.
6404 */
6405 if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
6406 update_adv_data(&req);
6407 update_scan_rsp_data(&req);
6408 }
6409
6410 if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
6411 enable_advertising(&req);
6412
6413 restart_le_actions(&req);
6414 }
6415
6416 link_sec = test_bit(HCI_LINK_SECURITY, &hdev->dev_flags);
6417 if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
6418 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
6419 sizeof(link_sec), &link_sec);
6420
6421 if (lmp_bredr_capable(hdev)) {
6422 write_fast_connectable(&req, false);
6423 __hci_update_page_scan(&req);
6424 update_class(&req);
6425 update_name(&req);
6426 update_eir(&req);
6427 }
6428
6429 return hci_req_run(&req, powered_complete);
6430 }
6431
6432 int mgmt_powered(struct hci_dev *hdev, u8 powered)
6433 {
6434 struct cmd_lookup match = { NULL, hdev };
6435 u8 status, zero_cod[] = { 0, 0, 0 };
6436 int err;
6437
6438 if (!test_bit(HCI_MGMT, &hdev->dev_flags))
6439 return 0;
6440
6441 if (powered) {
6442 if (powered_update_hci(hdev) == 0)
6443 return 0;
6444
6445 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
6446 &match);
6447 goto new_settings;
6448 }
6449
6450 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
6451
6452 /* If the power off is because of hdev unregistration let
6453 * use the appropriate INVALID_INDEX status. Otherwise use
6454 * NOT_POWERED. We cover both scenarios here since later in
6455 * mgmt_index_removed() any hci_conn callbacks will have already
6456 * been triggered, potentially causing misleading DISCONNECTED
6457 * status responses.
6458 */
6459 if (test_bit(HCI_UNREGISTER, &hdev->dev_flags))
6460 status = MGMT_STATUS_INVALID_INDEX;
6461 else
6462 status = MGMT_STATUS_NOT_POWERED;
6463
6464 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
6465
6466 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
6467 mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
6468 zero_cod, sizeof(zero_cod), NULL);
6469
6470 new_settings:
6471 err = new_settings(hdev, match.sk);
6472
6473 if (match.sk)
6474 sock_put(match.sk);
6475
6476 return err;
6477 }
6478
6479 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
6480 {
6481 struct pending_cmd *cmd;
6482 u8 status;
6483
6484 cmd = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev);
6485 if (!cmd)
6486 return;
6487
6488 if (err == -ERFKILL)
6489 status = MGMT_STATUS_RFKILLED;
6490 else
6491 status = MGMT_STATUS_FAILED;
6492
6493 cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
6494
6495 mgmt_pending_remove(cmd);
6496 }
6497
6498 void mgmt_discoverable_timeout(struct hci_dev *hdev)
6499 {
6500 struct hci_request req;
6501
6502 hci_dev_lock(hdev);
6503
6504 /* When discoverable timeout triggers, then just make sure
6505 * the limited discoverable flag is cleared. Even in the case
6506 * of a timeout triggered from general discoverable, it is
6507 * safe to unconditionally clear the flag.
6508 */
6509 clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags);
6510 clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
6511
6512 hci_req_init(&req, hdev);
6513 if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
6514 u8 scan = SCAN_PAGE;
6515 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
6516 sizeof(scan), &scan);
6517 }
6518 update_class(&req);
6519 update_adv_data(&req);
6520 hci_req_run(&req, NULL);
6521
6522 hdev->discov_timeout = 0;
6523
6524 new_settings(hdev, NULL);
6525
6526 hci_dev_unlock(hdev);
6527 }
6528
6529 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
6530 bool persistent)
6531 {
6532 struct mgmt_ev_new_link_key ev;
6533
6534 memset(&ev, 0, sizeof(ev));
6535
6536 ev.store_hint = persistent;
6537 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
6538 ev.key.addr.type = BDADDR_BREDR;
6539 ev.key.type = key->type;
6540 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
6541 ev.key.pin_len = key->pin_len;
6542
6543 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
6544 }
6545
6546 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
6547 {
6548 switch (ltk->type) {
6549 case SMP_LTK:
6550 case SMP_LTK_SLAVE:
6551 if (ltk->authenticated)
6552 return MGMT_LTK_AUTHENTICATED;
6553 return MGMT_LTK_UNAUTHENTICATED;
6554 case SMP_LTK_P256:
6555 if (ltk->authenticated)
6556 return MGMT_LTK_P256_AUTH;
6557 return MGMT_LTK_P256_UNAUTH;
6558 case SMP_LTK_P256_DEBUG:
6559 return MGMT_LTK_P256_DEBUG;
6560 }
6561
6562 return MGMT_LTK_UNAUTHENTICATED;
6563 }
6564
6565 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
6566 {
6567 struct mgmt_ev_new_long_term_key ev;
6568
6569 memset(&ev, 0, sizeof(ev));
6570
6571 /* Devices using resolvable or non-resolvable random addresses
6572 * without providing an indentity resolving key don't require
6573 * to store long term keys. Their addresses will change the
6574 * next time around.
6575 *
6576 * Only when a remote device provides an identity address
6577 * make sure the long term key is stored. If the remote
6578 * identity is known, the long term keys are internally
6579 * mapped to the identity address. So allow static random
6580 * and public addresses here.
6581 */
6582 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
6583 (key->bdaddr.b[5] & 0xc0) != 0xc0)
6584 ev.store_hint = 0x00;
6585 else
6586 ev.store_hint = persistent;
6587
6588 bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
6589 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
6590 ev.key.type = mgmt_ltk_type(key);
6591 ev.key.enc_size = key->enc_size;
6592 ev.key.ediv = key->ediv;
6593 ev.key.rand = key->rand;
6594
6595 if (key->type == SMP_LTK)
6596 ev.key.master = 1;
6597
6598 memcpy(ev.key.val, key->val, sizeof(key->val));
6599
6600 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
6601 }
6602
6603 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk)
6604 {
6605 struct mgmt_ev_new_irk ev;
6606
6607 memset(&ev, 0, sizeof(ev));
6608
6609 /* For identity resolving keys from devices that are already
6610 * using a public address or static random address, do not
6611 * ask for storing this key. The identity resolving key really
6612 * is only mandatory for devices using resovlable random
6613 * addresses.
6614 *
6615 * Storing all identity resolving keys has the downside that
6616 * they will be also loaded on next boot of they system. More
6617 * identity resolving keys, means more time during scanning is
6618 * needed to actually resolve these addresses.
6619 */
6620 if (bacmp(&irk->rpa, BDADDR_ANY))
6621 ev.store_hint = 0x01;
6622 else
6623 ev.store_hint = 0x00;
6624
6625 bacpy(&ev.rpa, &irk->rpa);
6626 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
6627 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
6628 memcpy(ev.irk.val, irk->val, sizeof(irk->val));
6629
6630 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
6631 }
6632
6633 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
6634 bool persistent)
6635 {
6636 struct mgmt_ev_new_csrk ev;
6637
6638 memset(&ev, 0, sizeof(ev));
6639
6640 /* Devices using resolvable or non-resolvable random addresses
6641 * without providing an indentity resolving key don't require
6642 * to store signature resolving keys. Their addresses will change
6643 * the next time around.
6644 *
6645 * Only when a remote device provides an identity address
6646 * make sure the signature resolving key is stored. So allow
6647 * static random and public addresses here.
6648 */
6649 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
6650 (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
6651 ev.store_hint = 0x00;
6652 else
6653 ev.store_hint = persistent;
6654
6655 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
6656 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
6657 ev.key.master = csrk->master;
6658 memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
6659
6660 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
6661 }
6662
6663 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
6664 u8 bdaddr_type, u8 store_hint, u16 min_interval,
6665 u16 max_interval, u16 latency, u16 timeout)
6666 {
6667 struct mgmt_ev_new_conn_param ev;
6668
6669 if (!hci_is_identity_address(bdaddr, bdaddr_type))
6670 return;
6671
6672 memset(&ev, 0, sizeof(ev));
6673 bacpy(&ev.addr.bdaddr, bdaddr);
6674 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
6675 ev.store_hint = store_hint;
6676 ev.min_interval = cpu_to_le16(min_interval);
6677 ev.max_interval = cpu_to_le16(max_interval);
6678 ev.latency = cpu_to_le16(latency);
6679 ev.timeout = cpu_to_le16(timeout);
6680
6681 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
6682 }
6683
6684 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6685 u8 data_len)
6686 {
6687 eir[eir_len++] = sizeof(type) + data_len;
6688 eir[eir_len++] = type;
6689 memcpy(&eir[eir_len], data, data_len);
6690 eir_len += data_len;
6691
6692 return eir_len;
6693 }
6694
6695 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
6696 u32 flags, u8 *name, u8 name_len)
6697 {
6698 char buf[512];
6699 struct mgmt_ev_device_connected *ev = (void *) buf;
6700 u16 eir_len = 0;
6701
6702 bacpy(&ev->addr.bdaddr, &conn->dst);
6703 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
6704
6705 ev->flags = __cpu_to_le32(flags);
6706
6707 /* We must ensure that the EIR Data fields are ordered and
6708 * unique. Keep it simple for now and avoid the problem by not
6709 * adding any BR/EDR data to the LE adv.
6710 */
6711 if (conn->le_adv_data_len > 0) {
6712 memcpy(&ev->eir[eir_len],
6713 conn->le_adv_data, conn->le_adv_data_len);
6714 eir_len = conn->le_adv_data_len;
6715 } else {
6716 if (name_len > 0)
6717 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
6718 name, name_len);
6719
6720 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
6721 eir_len = eir_append_data(ev->eir, eir_len,
6722 EIR_CLASS_OF_DEV,
6723 conn->dev_class, 3);
6724 }
6725
6726 ev->eir_len = cpu_to_le16(eir_len);
6727
6728 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
6729 sizeof(*ev) + eir_len, NULL);
6730 }
6731
6732 static void disconnect_rsp(struct pending_cmd *cmd, void *data)
6733 {
6734 struct sock **sk = data;
6735
6736 cmd->cmd_complete(cmd, 0);
6737
6738 *sk = cmd->sk;
6739 sock_hold(*sk);
6740
6741 mgmt_pending_remove(cmd);
6742 }
6743
6744 static void unpair_device_rsp(struct pending_cmd *cmd, void *data)
6745 {
6746 struct hci_dev *hdev = data;
6747 struct mgmt_cp_unpair_device *cp = cmd->param;
6748
6749 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
6750
6751 cmd->cmd_complete(cmd, 0);
6752 mgmt_pending_remove(cmd);
6753 }
6754
6755 bool mgmt_powering_down(struct hci_dev *hdev)
6756 {
6757 struct pending_cmd *cmd;
6758 struct mgmt_mode *cp;
6759
6760 cmd = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev);
6761 if (!cmd)
6762 return false;
6763
6764 cp = cmd->param;
6765 if (!cp->val)
6766 return true;
6767
6768 return false;
6769 }
6770
6771 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
6772 u8 link_type, u8 addr_type, u8 reason,
6773 bool mgmt_connected)
6774 {
6775 struct mgmt_ev_device_disconnected ev;
6776 struct sock *sk = NULL;
6777
6778 /* The connection is still in hci_conn_hash so test for 1
6779 * instead of 0 to know if this is the last one.
6780 */
6781 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
6782 cancel_delayed_work(&hdev->power_off);
6783 queue_work(hdev->req_workqueue, &hdev->power_off.work);
6784 }
6785
6786 if (!mgmt_connected)
6787 return;
6788
6789 if (link_type != ACL_LINK && link_type != LE_LINK)
6790 return;
6791
6792 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
6793
6794 bacpy(&ev.addr.bdaddr, bdaddr);
6795 ev.addr.type = link_to_bdaddr(link_type, addr_type);
6796 ev.reason = reason;
6797
6798 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
6799
6800 if (sk)
6801 sock_put(sk);
6802
6803 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
6804 hdev);
6805 }
6806
6807 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
6808 u8 link_type, u8 addr_type, u8 status)
6809 {
6810 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
6811 struct mgmt_cp_disconnect *cp;
6812 struct pending_cmd *cmd;
6813
6814 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
6815 hdev);
6816
6817 cmd = mgmt_pending_find(MGMT_OP_DISCONNECT, hdev);
6818 if (!cmd)
6819 return;
6820
6821 cp = cmd->param;
6822
6823 if (bacmp(bdaddr, &cp->addr.bdaddr))
6824 return;
6825
6826 if (cp->addr.type != bdaddr_type)
6827 return;
6828
6829 cmd->cmd_complete(cmd, mgmt_status(status));
6830 mgmt_pending_remove(cmd);
6831 }
6832
6833 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
6834 u8 addr_type, u8 status)
6835 {
6836 struct mgmt_ev_connect_failed ev;
6837
6838 /* The connection is still in hci_conn_hash so test for 1
6839 * instead of 0 to know if this is the last one.
6840 */
6841 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
6842 cancel_delayed_work(&hdev->power_off);
6843 queue_work(hdev->req_workqueue, &hdev->power_off.work);
6844 }
6845
6846 bacpy(&ev.addr.bdaddr, bdaddr);
6847 ev.addr.type = link_to_bdaddr(link_type, addr_type);
6848 ev.status = mgmt_status(status);
6849
6850 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
6851 }
6852
6853 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
6854 {
6855 struct mgmt_ev_pin_code_request ev;
6856
6857 bacpy(&ev.addr.bdaddr, bdaddr);
6858 ev.addr.type = BDADDR_BREDR;
6859 ev.secure = secure;
6860
6861 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
6862 }
6863
6864 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6865 u8 status)
6866 {
6867 struct pending_cmd *cmd;
6868
6869 cmd = mgmt_pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
6870 if (!cmd)
6871 return;
6872
6873 cmd->cmd_complete(cmd, mgmt_status(status));
6874 mgmt_pending_remove(cmd);
6875 }
6876
6877 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6878 u8 status)
6879 {
6880 struct pending_cmd *cmd;
6881
6882 cmd = mgmt_pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
6883 if (!cmd)
6884 return;
6885
6886 cmd->cmd_complete(cmd, mgmt_status(status));
6887 mgmt_pending_remove(cmd);
6888 }
6889
6890 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
6891 u8 link_type, u8 addr_type, u32 value,
6892 u8 confirm_hint)
6893 {
6894 struct mgmt_ev_user_confirm_request ev;
6895
6896 BT_DBG("%s", hdev->name);
6897
6898 bacpy(&ev.addr.bdaddr, bdaddr);
6899 ev.addr.type = link_to_bdaddr(link_type, addr_type);
6900 ev.confirm_hint = confirm_hint;
6901 ev.value = cpu_to_le32(value);
6902
6903 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
6904 NULL);
6905 }
6906
6907 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
6908 u8 link_type, u8 addr_type)
6909 {
6910 struct mgmt_ev_user_passkey_request ev;
6911
6912 BT_DBG("%s", hdev->name);
6913
6914 bacpy(&ev.addr.bdaddr, bdaddr);
6915 ev.addr.type = link_to_bdaddr(link_type, addr_type);
6916
6917 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
6918 NULL);
6919 }
6920
6921 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6922 u8 link_type, u8 addr_type, u8 status,
6923 u8 opcode)
6924 {
6925 struct pending_cmd *cmd;
6926
6927 cmd = mgmt_pending_find(opcode, hdev);
6928 if (!cmd)
6929 return -ENOENT;
6930
6931 cmd->cmd_complete(cmd, mgmt_status(status));
6932 mgmt_pending_remove(cmd);
6933
6934 return 0;
6935 }
6936
6937 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6938 u8 link_type, u8 addr_type, u8 status)
6939 {
6940 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
6941 status, MGMT_OP_USER_CONFIRM_REPLY);
6942 }
6943
6944 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6945 u8 link_type, u8 addr_type, u8 status)
6946 {
6947 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
6948 status,
6949 MGMT_OP_USER_CONFIRM_NEG_REPLY);
6950 }
6951
6952 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6953 u8 link_type, u8 addr_type, u8 status)
6954 {
6955 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
6956 status, MGMT_OP_USER_PASSKEY_REPLY);
6957 }
6958
6959 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
6960 u8 link_type, u8 addr_type, u8 status)
6961 {
6962 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
6963 status,
6964 MGMT_OP_USER_PASSKEY_NEG_REPLY);
6965 }
6966
6967 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
6968 u8 link_type, u8 addr_type, u32 passkey,
6969 u8 entered)
6970 {
6971 struct mgmt_ev_passkey_notify ev;
6972
6973 BT_DBG("%s", hdev->name);
6974
6975 bacpy(&ev.addr.bdaddr, bdaddr);
6976 ev.addr.type = link_to_bdaddr(link_type, addr_type);
6977 ev.passkey = __cpu_to_le32(passkey);
6978 ev.entered = entered;
6979
6980 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
6981 }
6982
6983 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
6984 {
6985 struct mgmt_ev_auth_failed ev;
6986 struct pending_cmd *cmd;
6987 u8 status = mgmt_status(hci_status);
6988
6989 bacpy(&ev.addr.bdaddr, &conn->dst);
6990 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
6991 ev.status = status;
6992
6993 cmd = find_pairing(conn);
6994
6995 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
6996 cmd ? cmd->sk : NULL);
6997
6998 if (cmd) {
6999 cmd->cmd_complete(cmd, status);
7000 mgmt_pending_remove(cmd);
7001 }
7002 }
7003
7004 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
7005 {
7006 struct cmd_lookup match = { NULL, hdev };
7007 bool changed;
7008
7009 if (status) {
7010 u8 mgmt_err = mgmt_status(status);
7011 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
7012 cmd_status_rsp, &mgmt_err);
7013 return;
7014 }
7015
7016 if (test_bit(HCI_AUTH, &hdev->flags))
7017 changed = !test_and_set_bit(HCI_LINK_SECURITY,
7018 &hdev->dev_flags);
7019 else
7020 changed = test_and_clear_bit(HCI_LINK_SECURITY,
7021 &hdev->dev_flags);
7022
7023 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
7024 &match);
7025
7026 if (changed)
7027 new_settings(hdev, match.sk);
7028
7029 if (match.sk)
7030 sock_put(match.sk);
7031 }
7032
7033 static void clear_eir(struct hci_request *req)
7034 {
7035 struct hci_dev *hdev = req->hdev;
7036 struct hci_cp_write_eir cp;
7037
7038 if (!lmp_ext_inq_capable(hdev))
7039 return;
7040
7041 memset(hdev->eir, 0, sizeof(hdev->eir));
7042
7043 memset(&cp, 0, sizeof(cp));
7044
7045 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
7046 }
7047
7048 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
7049 {
7050 struct cmd_lookup match = { NULL, hdev };
7051 struct hci_request req;
7052 bool changed = false;
7053
7054 if (status) {
7055 u8 mgmt_err = mgmt_status(status);
7056
7057 if (enable && test_and_clear_bit(HCI_SSP_ENABLED,
7058 &hdev->dev_flags)) {
7059 clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
7060 new_settings(hdev, NULL);
7061 }
7062
7063 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
7064 &mgmt_err);
7065 return;
7066 }
7067
7068 if (enable) {
7069 changed = !test_and_set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
7070 } else {
7071 changed = test_and_clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
7072 if (!changed)
7073 changed = test_and_clear_bit(HCI_HS_ENABLED,
7074 &hdev->dev_flags);
7075 else
7076 clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
7077 }
7078
7079 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
7080
7081 if (changed)
7082 new_settings(hdev, match.sk);
7083
7084 if (match.sk)
7085 sock_put(match.sk);
7086
7087 hci_req_init(&req, hdev);
7088
7089 if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
7090 if (test_bit(HCI_USE_DEBUG_KEYS, &hdev->dev_flags))
7091 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
7092 sizeof(enable), &enable);
7093 update_eir(&req);
7094 } else {
7095 clear_eir(&req);
7096 }
7097
7098 hci_req_run(&req, NULL);
7099 }
7100
7101 static void sk_lookup(struct pending_cmd *cmd, void *data)
7102 {
7103 struct cmd_lookup *match = data;
7104
7105 if (match->sk == NULL) {
7106 match->sk = cmd->sk;
7107 sock_hold(match->sk);
7108 }
7109 }
7110
7111 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
7112 u8 status)
7113 {
7114 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
7115
7116 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
7117 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
7118 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
7119
7120 if (!status)
7121 mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, dev_class, 3,
7122 NULL);
7123
7124 if (match.sk)
7125 sock_put(match.sk);
7126 }
7127
7128 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
7129 {
7130 struct mgmt_cp_set_local_name ev;
7131 struct pending_cmd *cmd;
7132
7133 if (status)
7134 return;
7135
7136 memset(&ev, 0, sizeof(ev));
7137 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
7138 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
7139
7140 cmd = mgmt_pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
7141 if (!cmd) {
7142 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
7143
7144 /* If this is a HCI command related to powering on the
7145 * HCI dev don't send any mgmt signals.
7146 */
7147 if (mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
7148 return;
7149 }
7150
7151 mgmt_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
7152 cmd ? cmd->sk : NULL);
7153 }
7154
7155 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
7156 u8 *rand192, u8 *hash256, u8 *rand256,
7157 u8 status)
7158 {
7159 struct pending_cmd *cmd;
7160
7161 BT_DBG("%s status %u", hdev->name, status);
7162
7163 cmd = mgmt_pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev);
7164 if (!cmd)
7165 return;
7166
7167 if (status) {
7168 cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
7169 mgmt_status(status));
7170 } else {
7171 struct mgmt_rp_read_local_oob_data rp;
7172 size_t rp_size = sizeof(rp);
7173
7174 memcpy(rp.hash192, hash192, sizeof(rp.hash192));
7175 memcpy(rp.rand192, rand192, sizeof(rp.rand192));
7176
7177 if (bredr_sc_enabled(hdev) && hash256 && rand256) {
7178 memcpy(rp.hash256, hash256, sizeof(rp.hash256));
7179 memcpy(rp.rand256, rand256, sizeof(rp.rand256));
7180 } else {
7181 rp_size -= sizeof(rp.hash256) + sizeof(rp.rand256);
7182 }
7183
7184 cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 0,
7185 &rp, rp_size);
7186 }
7187
7188 mgmt_pending_remove(cmd);
7189 }
7190
7191 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
7192 {
7193 int i;
7194
7195 for (i = 0; i < uuid_count; i++) {
7196 if (!memcmp(uuid, uuids[i], 16))
7197 return true;
7198 }
7199
7200 return false;
7201 }
7202
7203 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
7204 {
7205 u16 parsed = 0;
7206
7207 while (parsed < eir_len) {
7208 u8 field_len = eir[0];
7209 u8 uuid[16];
7210 int i;
7211
7212 if (field_len == 0)
7213 break;
7214
7215 if (eir_len - parsed < field_len + 1)
7216 break;
7217
7218 switch (eir[1]) {
7219 case EIR_UUID16_ALL:
7220 case EIR_UUID16_SOME:
7221 for (i = 0; i + 3 <= field_len; i += 2) {
7222 memcpy(uuid, bluetooth_base_uuid, 16);
7223 uuid[13] = eir[i + 3];
7224 uuid[12] = eir[i + 2];
7225 if (has_uuid(uuid, uuid_count, uuids))
7226 return true;
7227 }
7228 break;
7229 case EIR_UUID32_ALL:
7230 case EIR_UUID32_SOME:
7231 for (i = 0; i + 5 <= field_len; i += 4) {
7232 memcpy(uuid, bluetooth_base_uuid, 16);
7233 uuid[15] = eir[i + 5];
7234 uuid[14] = eir[i + 4];
7235 uuid[13] = eir[i + 3];
7236 uuid[12] = eir[i + 2];
7237 if (has_uuid(uuid, uuid_count, uuids))
7238 return true;
7239 }
7240 break;
7241 case EIR_UUID128_ALL:
7242 case EIR_UUID128_SOME:
7243 for (i = 0; i + 17 <= field_len; i += 16) {
7244 memcpy(uuid, eir + i + 2, 16);
7245 if (has_uuid(uuid, uuid_count, uuids))
7246 return true;
7247 }
7248 break;
7249 }
7250
7251 parsed += field_len + 1;
7252 eir += field_len + 1;
7253 }
7254
7255 return false;
7256 }
7257
7258 static void restart_le_scan(struct hci_dev *hdev)
7259 {
7260 /* If controller is not scanning we are done. */
7261 if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags))
7262 return;
7263
7264 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
7265 hdev->discovery.scan_start +
7266 hdev->discovery.scan_duration))
7267 return;
7268
7269 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
7270 DISCOV_LE_RESTART_DELAY);
7271 }
7272
7273 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
7274 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
7275 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
7276 {
7277 char buf[512];
7278 struct mgmt_ev_device_found *ev = (void *) buf;
7279 size_t ev_size;
7280 bool match;
7281
7282 /* Don't send events for a non-kernel initiated discovery. With
7283 * LE one exception is if we have pend_le_reports > 0 in which
7284 * case we're doing passive scanning and want these events.
7285 */
7286 if (!hci_discovery_active(hdev)) {
7287 if (link_type == ACL_LINK)
7288 return;
7289 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
7290 return;
7291 }
7292
7293 /* When using service discovery with a RSSI threshold, then check
7294 * if such a RSSI threshold is specified. If a RSSI threshold has
7295 * been specified, and HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set,
7296 * then all results with a RSSI smaller than the RSSI threshold will be
7297 * dropped. If the quirk is set, let it through for further processing,
7298 * as we might need to restart the scan.
7299 *
7300 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
7301 * the results are also dropped.
7302 */
7303 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
7304 (rssi == HCI_RSSI_INVALID ||
7305 (rssi < hdev->discovery.rssi &&
7306 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
7307 return;
7308
7309 /* Make sure that the buffer is big enough. The 5 extra bytes
7310 * are for the potential CoD field.
7311 */
7312 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
7313 return;
7314
7315 memset(buf, 0, sizeof(buf));
7316
7317 /* In case of device discovery with BR/EDR devices (pre 1.2), the
7318 * RSSI value was reported as 0 when not available. This behavior
7319 * is kept when using device discovery. This is required for full
7320 * backwards compatibility with the API.
7321 *
7322 * However when using service discovery, the value 127 will be
7323 * returned when the RSSI is not available.
7324 */
7325 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
7326 link_type == ACL_LINK)
7327 rssi = 0;
7328
7329 bacpy(&ev->addr.bdaddr, bdaddr);
7330 ev->addr.type = link_to_bdaddr(link_type, addr_type);
7331 ev->rssi = rssi;
7332 ev->flags = cpu_to_le32(flags);
7333
7334 if (eir_len > 0) {
7335 /* When using service discovery and a list of UUID is
7336 * provided, results with no matching UUID should be
7337 * dropped. In case there is a match the result is
7338 * kept and checking possible scan response data
7339 * will be skipped.
7340 */
7341 if (hdev->discovery.uuid_count > 0) {
7342 match = eir_has_uuids(eir, eir_len,
7343 hdev->discovery.uuid_count,
7344 hdev->discovery.uuids);
7345 /* If duplicate filtering does not report RSSI changes,
7346 * then restart scanning to ensure updated result with
7347 * updated RSSI values.
7348 */
7349 if (match && test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
7350 &hdev->quirks))
7351 restart_le_scan(hdev);
7352 } else {
7353 match = true;
7354 }
7355
7356 if (!match && !scan_rsp_len)
7357 return;
7358
7359 /* Copy EIR or advertising data into event */
7360 memcpy(ev->eir, eir, eir_len);
7361 } else {
7362 /* When using service discovery and a list of UUID is
7363 * provided, results with empty EIR or advertising data
7364 * should be dropped since they do not match any UUID.
7365 */
7366 if (hdev->discovery.uuid_count > 0 && !scan_rsp_len)
7367 return;
7368
7369 match = false;
7370 }
7371
7372 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
7373 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
7374 dev_class, 3);
7375
7376 if (scan_rsp_len > 0) {
7377 /* When using service discovery and a list of UUID is
7378 * provided, results with no matching UUID should be
7379 * dropped if there is no previous match from the
7380 * advertising data.
7381 */
7382 if (hdev->discovery.uuid_count > 0) {
7383 if (!match && !eir_has_uuids(scan_rsp, scan_rsp_len,
7384 hdev->discovery.uuid_count,
7385 hdev->discovery.uuids))
7386 return;
7387
7388 /* If duplicate filtering does not report RSSI changes,
7389 * then restart scanning to ensure updated result with
7390 * updated RSSI values.
7391 */
7392 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
7393 &hdev->quirks))
7394 restart_le_scan(hdev);
7395 }
7396
7397 /* Append scan response data to event */
7398 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
7399 } else {
7400 /* When using service discovery and a list of UUID is
7401 * provided, results with empty scan response and no
7402 * previous matched advertising data should be dropped.
7403 */
7404 if (hdev->discovery.uuid_count > 0 && !match)
7405 return;
7406 }
7407
7408 /* Validate the reported RSSI value against the RSSI threshold once more
7409 * incase HCI_QUIRK_STRICT_DUPLICATE_FILTER forced a restart of LE
7410 * scanning.
7411 */
7412 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
7413 rssi < hdev->discovery.rssi)
7414 return;
7415
7416 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
7417 ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
7418
7419 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
7420 }
7421
7422 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
7423 u8 addr_type, s8 rssi, u8 *name, u8 name_len)
7424 {
7425 struct mgmt_ev_device_found *ev;
7426 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
7427 u16 eir_len;
7428
7429 ev = (struct mgmt_ev_device_found *) buf;
7430
7431 memset(buf, 0, sizeof(buf));
7432
7433 bacpy(&ev->addr.bdaddr, bdaddr);
7434 ev->addr.type = link_to_bdaddr(link_type, addr_type);
7435 ev->rssi = rssi;
7436
7437 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
7438 name_len);
7439
7440 ev->eir_len = cpu_to_le16(eir_len);
7441
7442 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
7443 }
7444
7445 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
7446 {
7447 struct mgmt_ev_discovering ev;
7448
7449 BT_DBG("%s discovering %u", hdev->name, discovering);
7450
7451 memset(&ev, 0, sizeof(ev));
7452 ev.type = hdev->discovery.type;
7453 ev.discovering = discovering;
7454
7455 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
7456 }
7457
7458 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7459 {
7460 BT_DBG("%s status %u", hdev->name, status);
7461 }
7462
7463 void mgmt_reenable_advertising(struct hci_dev *hdev)
7464 {
7465 struct hci_request req;
7466
7467 if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags))
7468 return;
7469
7470 hci_req_init(&req, hdev);
7471 enable_advertising(&req);
7472 hci_req_run(&req, adv_enable_complete);
7473 }
Linux with added FPC-III support