Commit | Line | Data |
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0857dd3b JH |
1 | /* |
2 | BlueZ - Bluetooth protocol stack for Linux | |
3 | ||
4 | Copyright (C) 2014 Intel Corporation | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License version 2 as | |
8 | published by the Free Software Foundation; | |
9 | ||
10 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
11 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
12 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
13 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
14 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
15 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
16 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
17 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
18 | ||
19 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
20 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
21 | SOFTWARE IS DISCLAIMED. | |
22 | */ | |
23 | ||
174cd4b1 IM |
24 | #include <linux/sched/signal.h> |
25 | ||
0857dd3b JH |
26 | #include <net/bluetooth/bluetooth.h> |
27 | #include <net/bluetooth/hci_core.h> | |
f2252570 | 28 | #include <net/bluetooth/mgmt.h> |
0857dd3b JH |
29 | |
30 | #include "smp.h" | |
31 | #include "hci_request.h" | |
32 | ||
be91cd05 JH |
33 | #define HCI_REQ_DONE 0 |
34 | #define HCI_REQ_PEND 1 | |
35 | #define HCI_REQ_CANCELED 2 | |
36 | ||
0857dd3b JH |
37 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
38 | { | |
39 | skb_queue_head_init(&req->cmd_q); | |
40 | req->hdev = hdev; | |
41 | req->err = 0; | |
42 | } | |
43 | ||
f17d858e JK |
44 | void hci_req_purge(struct hci_request *req) |
45 | { | |
46 | skb_queue_purge(&req->cmd_q); | |
47 | } | |
48 | ||
f80c5dad JPRV |
49 | bool hci_req_status_pend(struct hci_dev *hdev) |
50 | { | |
51 | return hdev->req_status == HCI_REQ_PEND; | |
52 | } | |
53 | ||
e6214487 JH |
54 | static int req_run(struct hci_request *req, hci_req_complete_t complete, |
55 | hci_req_complete_skb_t complete_skb) | |
0857dd3b JH |
56 | { |
57 | struct hci_dev *hdev = req->hdev; | |
58 | struct sk_buff *skb; | |
59 | unsigned long flags; | |
60 | ||
61 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
62 | ||
63 | /* If an error occurred during request building, remove all HCI | |
64 | * commands queued on the HCI request queue. | |
65 | */ | |
66 | if (req->err) { | |
67 | skb_queue_purge(&req->cmd_q); | |
68 | return req->err; | |
69 | } | |
70 | ||
71 | /* Do not allow empty requests */ | |
72 | if (skb_queue_empty(&req->cmd_q)) | |
73 | return -ENODATA; | |
74 | ||
75 | skb = skb_peek_tail(&req->cmd_q); | |
44d27137 JH |
76 | if (complete) { |
77 | bt_cb(skb)->hci.req_complete = complete; | |
78 | } else if (complete_skb) { | |
79 | bt_cb(skb)->hci.req_complete_skb = complete_skb; | |
80 | bt_cb(skb)->hci.req_flags |= HCI_REQ_SKB; | |
81 | } | |
0857dd3b JH |
82 | |
83 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
84 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
85 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
86 | ||
87 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
e6214487 JH |
92 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) |
93 | { | |
94 | return req_run(req, complete, NULL); | |
95 | } | |
96 | ||
97 | int hci_req_run_skb(struct hci_request *req, hci_req_complete_skb_t complete) | |
98 | { | |
99 | return req_run(req, NULL, complete); | |
100 | } | |
101 | ||
be91cd05 JH |
102 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
103 | struct sk_buff *skb) | |
104 | { | |
105 | BT_DBG("%s result 0x%2.2x", hdev->name, result); | |
106 | ||
107 | if (hdev->req_status == HCI_REQ_PEND) { | |
108 | hdev->req_result = result; | |
109 | hdev->req_status = HCI_REQ_DONE; | |
110 | if (skb) | |
111 | hdev->req_skb = skb_get(skb); | |
112 | wake_up_interruptible(&hdev->req_wait_q); | |
113 | } | |
114 | } | |
115 | ||
b504430c | 116 | void hci_req_sync_cancel(struct hci_dev *hdev, int err) |
be91cd05 JH |
117 | { |
118 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
119 | ||
120 | if (hdev->req_status == HCI_REQ_PEND) { | |
121 | hdev->req_result = err; | |
122 | hdev->req_status = HCI_REQ_CANCELED; | |
123 | wake_up_interruptible(&hdev->req_wait_q); | |
124 | } | |
125 | } | |
126 | ||
127 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, | |
128 | const void *param, u8 event, u32 timeout) | |
129 | { | |
be91cd05 JH |
130 | struct hci_request req; |
131 | struct sk_buff *skb; | |
132 | int err = 0; | |
133 | ||
134 | BT_DBG("%s", hdev->name); | |
135 | ||
136 | hci_req_init(&req, hdev); | |
137 | ||
138 | hci_req_add_ev(&req, opcode, plen, param, event); | |
139 | ||
140 | hdev->req_status = HCI_REQ_PEND; | |
141 | ||
be91cd05 | 142 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
67d8cee4 | 143 | if (err < 0) |
be91cd05 | 144 | return ERR_PTR(err); |
be91cd05 | 145 | |
67d8cee4 JK |
146 | err = wait_event_interruptible_timeout(hdev->req_wait_q, |
147 | hdev->req_status != HCI_REQ_PEND, timeout); | |
be91cd05 | 148 | |
67d8cee4 | 149 | if (err == -ERESTARTSYS) |
be91cd05 JH |
150 | return ERR_PTR(-EINTR); |
151 | ||
152 | switch (hdev->req_status) { | |
153 | case HCI_REQ_DONE: | |
154 | err = -bt_to_errno(hdev->req_result); | |
155 | break; | |
156 | ||
157 | case HCI_REQ_CANCELED: | |
158 | err = -hdev->req_result; | |
159 | break; | |
160 | ||
161 | default: | |
162 | err = -ETIMEDOUT; | |
163 | break; | |
164 | } | |
165 | ||
166 | hdev->req_status = hdev->req_result = 0; | |
167 | skb = hdev->req_skb; | |
168 | hdev->req_skb = NULL; | |
169 | ||
170 | BT_DBG("%s end: err %d", hdev->name, err); | |
171 | ||
172 | if (err < 0) { | |
173 | kfree_skb(skb); | |
174 | return ERR_PTR(err); | |
175 | } | |
176 | ||
177 | if (!skb) | |
178 | return ERR_PTR(-ENODATA); | |
179 | ||
180 | return skb; | |
181 | } | |
182 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
183 | ||
184 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
185 | const void *param, u32 timeout) | |
186 | { | |
187 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
188 | } | |
189 | EXPORT_SYMBOL(__hci_cmd_sync); | |
190 | ||
191 | /* Execute request and wait for completion. */ | |
a1d01db1 JH |
192 | int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req, |
193 | unsigned long opt), | |
4ebeee2d | 194 | unsigned long opt, u32 timeout, u8 *hci_status) |
be91cd05 JH |
195 | { |
196 | struct hci_request req; | |
be91cd05 JH |
197 | int err = 0; |
198 | ||
199 | BT_DBG("%s start", hdev->name); | |
200 | ||
201 | hci_req_init(&req, hdev); | |
202 | ||
203 | hdev->req_status = HCI_REQ_PEND; | |
204 | ||
a1d01db1 JH |
205 | err = func(&req, opt); |
206 | if (err) { | |
207 | if (hci_status) | |
208 | *hci_status = HCI_ERROR_UNSPECIFIED; | |
209 | return err; | |
210 | } | |
be91cd05 | 211 | |
be91cd05 JH |
212 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
213 | if (err < 0) { | |
214 | hdev->req_status = 0; | |
215 | ||
be91cd05 JH |
216 | /* ENODATA means the HCI request command queue is empty. |
217 | * This can happen when a request with conditionals doesn't | |
218 | * trigger any commands to be sent. This is normal behavior | |
219 | * and should not trigger an error return. | |
220 | */ | |
568f44f6 JH |
221 | if (err == -ENODATA) { |
222 | if (hci_status) | |
223 | *hci_status = 0; | |
be91cd05 | 224 | return 0; |
568f44f6 JH |
225 | } |
226 | ||
227 | if (hci_status) | |
228 | *hci_status = HCI_ERROR_UNSPECIFIED; | |
be91cd05 JH |
229 | |
230 | return err; | |
231 | } | |
232 | ||
67d8cee4 JK |
233 | err = wait_event_interruptible_timeout(hdev->req_wait_q, |
234 | hdev->req_status != HCI_REQ_PEND, timeout); | |
be91cd05 | 235 | |
67d8cee4 | 236 | if (err == -ERESTARTSYS) |
be91cd05 JH |
237 | return -EINTR; |
238 | ||
239 | switch (hdev->req_status) { | |
240 | case HCI_REQ_DONE: | |
241 | err = -bt_to_errno(hdev->req_result); | |
4ebeee2d JH |
242 | if (hci_status) |
243 | *hci_status = hdev->req_result; | |
be91cd05 JH |
244 | break; |
245 | ||
246 | case HCI_REQ_CANCELED: | |
247 | err = -hdev->req_result; | |
4ebeee2d JH |
248 | if (hci_status) |
249 | *hci_status = HCI_ERROR_UNSPECIFIED; | |
be91cd05 JH |
250 | break; |
251 | ||
252 | default: | |
253 | err = -ETIMEDOUT; | |
4ebeee2d JH |
254 | if (hci_status) |
255 | *hci_status = HCI_ERROR_UNSPECIFIED; | |
be91cd05 JH |
256 | break; |
257 | } | |
258 | ||
9afee949 FD |
259 | kfree_skb(hdev->req_skb); |
260 | hdev->req_skb = NULL; | |
be91cd05 JH |
261 | hdev->req_status = hdev->req_result = 0; |
262 | ||
263 | BT_DBG("%s end: err %d", hdev->name, err); | |
264 | ||
265 | return err; | |
266 | } | |
267 | ||
a1d01db1 JH |
268 | int hci_req_sync(struct hci_dev *hdev, int (*req)(struct hci_request *req, |
269 | unsigned long opt), | |
4ebeee2d | 270 | unsigned long opt, u32 timeout, u8 *hci_status) |
be91cd05 JH |
271 | { |
272 | int ret; | |
273 | ||
274 | if (!test_bit(HCI_UP, &hdev->flags)) | |
275 | return -ENETDOWN; | |
276 | ||
277 | /* Serialize all requests */ | |
b504430c | 278 | hci_req_sync_lock(hdev); |
4ebeee2d | 279 | ret = __hci_req_sync(hdev, req, opt, timeout, hci_status); |
b504430c | 280 | hci_req_sync_unlock(hdev); |
be91cd05 JH |
281 | |
282 | return ret; | |
283 | } | |
284 | ||
0857dd3b JH |
285 | struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen, |
286 | const void *param) | |
287 | { | |
288 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
289 | struct hci_command_hdr *hdr; | |
290 | struct sk_buff *skb; | |
291 | ||
292 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
293 | if (!skb) | |
294 | return NULL; | |
295 | ||
4df864c1 | 296 | hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE); |
0857dd3b JH |
297 | hdr->opcode = cpu_to_le16(opcode); |
298 | hdr->plen = plen; | |
299 | ||
300 | if (plen) | |
59ae1d12 | 301 | skb_put_data(skb, param, plen); |
0857dd3b JH |
302 | |
303 | BT_DBG("skb len %d", skb->len); | |
304 | ||
d79f34e3 MH |
305 | hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; |
306 | hci_skb_opcode(skb) = opcode; | |
0857dd3b JH |
307 | |
308 | return skb; | |
309 | } | |
310 | ||
311 | /* Queue a command to an asynchronous HCI request */ | |
312 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, | |
313 | const void *param, u8 event) | |
314 | { | |
315 | struct hci_dev *hdev = req->hdev; | |
316 | struct sk_buff *skb; | |
317 | ||
318 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
319 | ||
320 | /* If an error occurred during request building, there is no point in | |
321 | * queueing the HCI command. We can simply return. | |
322 | */ | |
323 | if (req->err) | |
324 | return; | |
325 | ||
326 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
327 | if (!skb) { | |
2064ee33 MH |
328 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", |
329 | opcode); | |
0857dd3b JH |
330 | req->err = -ENOMEM; |
331 | return; | |
332 | } | |
333 | ||
334 | if (skb_queue_empty(&req->cmd_q)) | |
44d27137 | 335 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
0857dd3b | 336 | |
242c0ebd | 337 | bt_cb(skb)->hci.req_event = event; |
0857dd3b JH |
338 | |
339 | skb_queue_tail(&req->cmd_q, skb); | |
340 | } | |
341 | ||
342 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, | |
343 | const void *param) | |
344 | { | |
345 | hci_req_add_ev(req, opcode, plen, param, 0); | |
346 | } | |
347 | ||
bf943cbf JH |
348 | void __hci_req_write_fast_connectable(struct hci_request *req, bool enable) |
349 | { | |
350 | struct hci_dev *hdev = req->hdev; | |
351 | struct hci_cp_write_page_scan_activity acp; | |
352 | u8 type; | |
353 | ||
354 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
355 | return; | |
356 | ||
357 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
358 | return; | |
359 | ||
360 | if (enable) { | |
361 | type = PAGE_SCAN_TYPE_INTERLACED; | |
362 | ||
363 | /* 160 msec page scan interval */ | |
364 | acp.interval = cpu_to_le16(0x0100); | |
365 | } else { | |
366 | type = PAGE_SCAN_TYPE_STANDARD; /* default */ | |
367 | ||
368 | /* default 1.28 sec page scan */ | |
369 | acp.interval = cpu_to_le16(0x0800); | |
370 | } | |
371 | ||
372 | acp.window = cpu_to_le16(0x0012); | |
373 | ||
374 | if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval || | |
375 | __cpu_to_le16(hdev->page_scan_window) != acp.window) | |
376 | hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, | |
377 | sizeof(acp), &acp); | |
378 | ||
379 | if (hdev->page_scan_type != type) | |
380 | hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); | |
381 | } | |
382 | ||
196a5e97 JH |
383 | /* This function controls the background scanning based on hdev->pend_le_conns |
384 | * list. If there are pending LE connection we start the background scanning, | |
385 | * otherwise we stop it. | |
386 | * | |
387 | * This function requires the caller holds hdev->lock. | |
388 | */ | |
389 | static void __hci_update_background_scan(struct hci_request *req) | |
390 | { | |
391 | struct hci_dev *hdev = req->hdev; | |
392 | ||
393 | if (!test_bit(HCI_UP, &hdev->flags) || | |
394 | test_bit(HCI_INIT, &hdev->flags) || | |
395 | hci_dev_test_flag(hdev, HCI_SETUP) || | |
396 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
397 | hci_dev_test_flag(hdev, HCI_AUTO_OFF) || | |
398 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
399 | return; | |
400 | ||
401 | /* No point in doing scanning if LE support hasn't been enabled */ | |
402 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
403 | return; | |
404 | ||
405 | /* If discovery is active don't interfere with it */ | |
406 | if (hdev->discovery.state != DISCOVERY_STOPPED) | |
407 | return; | |
408 | ||
409 | /* Reset RSSI and UUID filters when starting background scanning | |
410 | * since these filters are meant for service discovery only. | |
411 | * | |
412 | * The Start Discovery and Start Service Discovery operations | |
413 | * ensure to set proper values for RSSI threshold and UUID | |
414 | * filter list. So it is safe to just reset them here. | |
415 | */ | |
416 | hci_discovery_filter_clear(hdev); | |
417 | ||
418 | if (list_empty(&hdev->pend_le_conns) && | |
419 | list_empty(&hdev->pend_le_reports)) { | |
420 | /* If there is no pending LE connections or devices | |
421 | * to be scanned for, we should stop the background | |
422 | * scanning. | |
423 | */ | |
424 | ||
425 | /* If controller is not scanning we are done. */ | |
426 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) | |
427 | return; | |
428 | ||
429 | hci_req_add_le_scan_disable(req); | |
430 | ||
431 | BT_DBG("%s stopping background scanning", hdev->name); | |
432 | } else { | |
433 | /* If there is at least one pending LE connection, we should | |
434 | * keep the background scan running. | |
435 | */ | |
436 | ||
437 | /* If controller is connecting, we should not start scanning | |
438 | * since some controllers are not able to scan and connect at | |
439 | * the same time. | |
440 | */ | |
441 | if (hci_lookup_le_connect(hdev)) | |
442 | return; | |
443 | ||
444 | /* If controller is currently scanning, we stop it to ensure we | |
445 | * don't miss any advertising (due to duplicates filter). | |
446 | */ | |
447 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) | |
448 | hci_req_add_le_scan_disable(req); | |
449 | ||
450 | hci_req_add_le_passive_scan(req); | |
451 | ||
452 | BT_DBG("%s starting background scanning", hdev->name); | |
453 | } | |
454 | } | |
455 | ||
00cf5040 JH |
456 | void __hci_req_update_name(struct hci_request *req) |
457 | { | |
458 | struct hci_dev *hdev = req->hdev; | |
459 | struct hci_cp_write_local_name cp; | |
460 | ||
461 | memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); | |
462 | ||
463 | hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); | |
464 | } | |
465 | ||
b1a8917c JH |
466 | #define PNP_INFO_SVCLASS_ID 0x1200 |
467 | ||
468 | static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) | |
469 | { | |
470 | u8 *ptr = data, *uuids_start = NULL; | |
471 | struct bt_uuid *uuid; | |
472 | ||
473 | if (len < 4) | |
474 | return ptr; | |
475 | ||
476 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
477 | u16 uuid16; | |
478 | ||
479 | if (uuid->size != 16) | |
480 | continue; | |
481 | ||
482 | uuid16 = get_unaligned_le16(&uuid->uuid[12]); | |
483 | if (uuid16 < 0x1100) | |
484 | continue; | |
485 | ||
486 | if (uuid16 == PNP_INFO_SVCLASS_ID) | |
487 | continue; | |
488 | ||
489 | if (!uuids_start) { | |
490 | uuids_start = ptr; | |
491 | uuids_start[0] = 1; | |
492 | uuids_start[1] = EIR_UUID16_ALL; | |
493 | ptr += 2; | |
494 | } | |
495 | ||
496 | /* Stop if not enough space to put next UUID */ | |
497 | if ((ptr - data) + sizeof(u16) > len) { | |
498 | uuids_start[1] = EIR_UUID16_SOME; | |
499 | break; | |
500 | } | |
501 | ||
502 | *ptr++ = (uuid16 & 0x00ff); | |
503 | *ptr++ = (uuid16 & 0xff00) >> 8; | |
504 | uuids_start[0] += sizeof(uuid16); | |
505 | } | |
506 | ||
507 | return ptr; | |
508 | } | |
509 | ||
510 | static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) | |
511 | { | |
512 | u8 *ptr = data, *uuids_start = NULL; | |
513 | struct bt_uuid *uuid; | |
514 | ||
515 | if (len < 6) | |
516 | return ptr; | |
517 | ||
518 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
519 | if (uuid->size != 32) | |
520 | continue; | |
521 | ||
522 | if (!uuids_start) { | |
523 | uuids_start = ptr; | |
524 | uuids_start[0] = 1; | |
525 | uuids_start[1] = EIR_UUID32_ALL; | |
526 | ptr += 2; | |
527 | } | |
528 | ||
529 | /* Stop if not enough space to put next UUID */ | |
530 | if ((ptr - data) + sizeof(u32) > len) { | |
531 | uuids_start[1] = EIR_UUID32_SOME; | |
532 | break; | |
533 | } | |
534 | ||
535 | memcpy(ptr, &uuid->uuid[12], sizeof(u32)); | |
536 | ptr += sizeof(u32); | |
537 | uuids_start[0] += sizeof(u32); | |
538 | } | |
539 | ||
540 | return ptr; | |
541 | } | |
542 | ||
543 | static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) | |
544 | { | |
545 | u8 *ptr = data, *uuids_start = NULL; | |
546 | struct bt_uuid *uuid; | |
547 | ||
548 | if (len < 18) | |
549 | return ptr; | |
550 | ||
551 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
552 | if (uuid->size != 128) | |
553 | continue; | |
554 | ||
555 | if (!uuids_start) { | |
556 | uuids_start = ptr; | |
557 | uuids_start[0] = 1; | |
558 | uuids_start[1] = EIR_UUID128_ALL; | |
559 | ptr += 2; | |
560 | } | |
561 | ||
562 | /* Stop if not enough space to put next UUID */ | |
563 | if ((ptr - data) + 16 > len) { | |
564 | uuids_start[1] = EIR_UUID128_SOME; | |
565 | break; | |
566 | } | |
567 | ||
568 | memcpy(ptr, uuid->uuid, 16); | |
569 | ptr += 16; | |
570 | uuids_start[0] += 16; | |
571 | } | |
572 | ||
573 | return ptr; | |
574 | } | |
575 | ||
576 | static void create_eir(struct hci_dev *hdev, u8 *data) | |
577 | { | |
578 | u8 *ptr = data; | |
579 | size_t name_len; | |
580 | ||
581 | name_len = strlen(hdev->dev_name); | |
582 | ||
583 | if (name_len > 0) { | |
584 | /* EIR Data type */ | |
585 | if (name_len > 48) { | |
586 | name_len = 48; | |
587 | ptr[1] = EIR_NAME_SHORT; | |
588 | } else | |
589 | ptr[1] = EIR_NAME_COMPLETE; | |
590 | ||
591 | /* EIR Data length */ | |
592 | ptr[0] = name_len + 1; | |
593 | ||
594 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
595 | ||
596 | ptr += (name_len + 2); | |
597 | } | |
598 | ||
599 | if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) { | |
600 | ptr[0] = 2; | |
601 | ptr[1] = EIR_TX_POWER; | |
602 | ptr[2] = (u8) hdev->inq_tx_power; | |
603 | ||
604 | ptr += 3; | |
605 | } | |
606 | ||
607 | if (hdev->devid_source > 0) { | |
608 | ptr[0] = 9; | |
609 | ptr[1] = EIR_DEVICE_ID; | |
610 | ||
611 | put_unaligned_le16(hdev->devid_source, ptr + 2); | |
612 | put_unaligned_le16(hdev->devid_vendor, ptr + 4); | |
613 | put_unaligned_le16(hdev->devid_product, ptr + 6); | |
614 | put_unaligned_le16(hdev->devid_version, ptr + 8); | |
615 | ||
616 | ptr += 10; | |
617 | } | |
618 | ||
619 | ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); | |
620 | ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); | |
621 | ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); | |
622 | } | |
623 | ||
624 | void __hci_req_update_eir(struct hci_request *req) | |
625 | { | |
626 | struct hci_dev *hdev = req->hdev; | |
627 | struct hci_cp_write_eir cp; | |
628 | ||
629 | if (!hdev_is_powered(hdev)) | |
630 | return; | |
631 | ||
632 | if (!lmp_ext_inq_capable(hdev)) | |
633 | return; | |
634 | ||
635 | if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) | |
636 | return; | |
637 | ||
638 | if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) | |
639 | return; | |
640 | ||
641 | memset(&cp, 0, sizeof(cp)); | |
642 | ||
643 | create_eir(hdev, cp.data); | |
644 | ||
645 | if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0) | |
646 | return; | |
647 | ||
648 | memcpy(hdev->eir, cp.data, sizeof(cp.data)); | |
649 | ||
650 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); | |
651 | } | |
652 | ||
0857dd3b JH |
653 | void hci_req_add_le_scan_disable(struct hci_request *req) |
654 | { | |
a2344b9e | 655 | struct hci_dev *hdev = req->hdev; |
0857dd3b | 656 | |
a2344b9e JK |
657 | if (use_ext_scan(hdev)) { |
658 | struct hci_cp_le_set_ext_scan_enable cp; | |
659 | ||
660 | memset(&cp, 0, sizeof(cp)); | |
661 | cp.enable = LE_SCAN_DISABLE; | |
662 | hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_ENABLE, sizeof(cp), | |
663 | &cp); | |
664 | } else { | |
665 | struct hci_cp_le_set_scan_enable cp; | |
666 | ||
667 | memset(&cp, 0, sizeof(cp)); | |
668 | cp.enable = LE_SCAN_DISABLE; | |
669 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
670 | } | |
0857dd3b JH |
671 | } |
672 | ||
673 | static void add_to_white_list(struct hci_request *req, | |
674 | struct hci_conn_params *params) | |
675 | { | |
676 | struct hci_cp_le_add_to_white_list cp; | |
677 | ||
678 | cp.bdaddr_type = params->addr_type; | |
679 | bacpy(&cp.bdaddr, ¶ms->addr); | |
680 | ||
681 | hci_req_add(req, HCI_OP_LE_ADD_TO_WHITE_LIST, sizeof(cp), &cp); | |
682 | } | |
683 | ||
684 | static u8 update_white_list(struct hci_request *req) | |
685 | { | |
686 | struct hci_dev *hdev = req->hdev; | |
687 | struct hci_conn_params *params; | |
688 | struct bdaddr_list *b; | |
689 | uint8_t white_list_entries = 0; | |
690 | ||
691 | /* Go through the current white list programmed into the | |
692 | * controller one by one and check if that address is still | |
693 | * in the list of pending connections or list of devices to | |
694 | * report. If not present in either list, then queue the | |
695 | * command to remove it from the controller. | |
696 | */ | |
697 | list_for_each_entry(b, &hdev->le_white_list, list) { | |
cff10ce7 JH |
698 | /* If the device is neither in pend_le_conns nor |
699 | * pend_le_reports then remove it from the whitelist. | |
700 | */ | |
701 | if (!hci_pend_le_action_lookup(&hdev->pend_le_conns, | |
702 | &b->bdaddr, b->bdaddr_type) && | |
703 | !hci_pend_le_action_lookup(&hdev->pend_le_reports, | |
704 | &b->bdaddr, b->bdaddr_type)) { | |
705 | struct hci_cp_le_del_from_white_list cp; | |
706 | ||
707 | cp.bdaddr_type = b->bdaddr_type; | |
708 | bacpy(&cp.bdaddr, &b->bdaddr); | |
0857dd3b | 709 | |
cff10ce7 JH |
710 | hci_req_add(req, HCI_OP_LE_DEL_FROM_WHITE_LIST, |
711 | sizeof(cp), &cp); | |
0857dd3b JH |
712 | continue; |
713 | } | |
714 | ||
cff10ce7 JH |
715 | if (hci_find_irk_by_addr(hdev, &b->bdaddr, b->bdaddr_type)) { |
716 | /* White list can not be used with RPAs */ | |
717 | return 0x00; | |
718 | } | |
0857dd3b | 719 | |
cff10ce7 | 720 | white_list_entries++; |
0857dd3b JH |
721 | } |
722 | ||
723 | /* Since all no longer valid white list entries have been | |
724 | * removed, walk through the list of pending connections | |
725 | * and ensure that any new device gets programmed into | |
726 | * the controller. | |
727 | * | |
728 | * If the list of the devices is larger than the list of | |
729 | * available white list entries in the controller, then | |
730 | * just abort and return filer policy value to not use the | |
731 | * white list. | |
732 | */ | |
733 | list_for_each_entry(params, &hdev->pend_le_conns, action) { | |
734 | if (hci_bdaddr_list_lookup(&hdev->le_white_list, | |
735 | ¶ms->addr, params->addr_type)) | |
736 | continue; | |
737 | ||
738 | if (white_list_entries >= hdev->le_white_list_size) { | |
739 | /* Select filter policy to accept all advertising */ | |
740 | return 0x00; | |
741 | } | |
742 | ||
743 | if (hci_find_irk_by_addr(hdev, ¶ms->addr, | |
744 | params->addr_type)) { | |
745 | /* White list can not be used with RPAs */ | |
746 | return 0x00; | |
747 | } | |
748 | ||
749 | white_list_entries++; | |
750 | add_to_white_list(req, params); | |
751 | } | |
752 | ||
753 | /* After adding all new pending connections, walk through | |
754 | * the list of pending reports and also add these to the | |
755 | * white list if there is still space. | |
756 | */ | |
757 | list_for_each_entry(params, &hdev->pend_le_reports, action) { | |
758 | if (hci_bdaddr_list_lookup(&hdev->le_white_list, | |
759 | ¶ms->addr, params->addr_type)) | |
760 | continue; | |
761 | ||
762 | if (white_list_entries >= hdev->le_white_list_size) { | |
763 | /* Select filter policy to accept all advertising */ | |
764 | return 0x00; | |
765 | } | |
766 | ||
767 | if (hci_find_irk_by_addr(hdev, ¶ms->addr, | |
768 | params->addr_type)) { | |
769 | /* White list can not be used with RPAs */ | |
770 | return 0x00; | |
771 | } | |
772 | ||
773 | white_list_entries++; | |
774 | add_to_white_list(req, params); | |
775 | } | |
776 | ||
777 | /* Select filter policy to use white list */ | |
778 | return 0x01; | |
779 | } | |
780 | ||
82a37ade JH |
781 | static bool scan_use_rpa(struct hci_dev *hdev) |
782 | { | |
783 | return hci_dev_test_flag(hdev, HCI_PRIVACY); | |
784 | } | |
785 | ||
3baef810 JK |
786 | static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval, |
787 | u16 window, u8 own_addr_type, u8 filter_policy) | |
0857dd3b | 788 | { |
a2344b9e | 789 | struct hci_dev *hdev = req->hdev; |
3baef810 | 790 | |
a2344b9e JK |
791 | /* Use ext scanning if set ext scan param and ext scan enable is |
792 | * supported | |
793 | */ | |
794 | if (use_ext_scan(hdev)) { | |
795 | struct hci_cp_le_set_ext_scan_params *ext_param_cp; | |
796 | struct hci_cp_le_set_ext_scan_enable ext_enable_cp; | |
797 | struct hci_cp_le_scan_phy_params *phy_params; | |
45bdd86e JK |
798 | u8 data[sizeof(*ext_param_cp) + sizeof(*phy_params) * 2]; |
799 | u32 plen; | |
a2344b9e JK |
800 | |
801 | ext_param_cp = (void *)data; | |
802 | phy_params = (void *)ext_param_cp->data; | |
803 | ||
804 | memset(ext_param_cp, 0, sizeof(*ext_param_cp)); | |
805 | ext_param_cp->own_addr_type = own_addr_type; | |
806 | ext_param_cp->filter_policy = filter_policy; | |
a2344b9e | 807 | |
45bdd86e JK |
808 | plen = sizeof(*ext_param_cp); |
809 | ||
810 | if (scan_1m(hdev) || scan_2m(hdev)) { | |
811 | ext_param_cp->scanning_phys |= LE_SCAN_PHY_1M; | |
812 | ||
813 | memset(phy_params, 0, sizeof(*phy_params)); | |
814 | phy_params->type = type; | |
815 | phy_params->interval = cpu_to_le16(interval); | |
816 | phy_params->window = cpu_to_le16(window); | |
817 | ||
818 | plen += sizeof(*phy_params); | |
819 | phy_params++; | |
820 | } | |
821 | ||
822 | if (scan_coded(hdev)) { | |
823 | ext_param_cp->scanning_phys |= LE_SCAN_PHY_CODED; | |
824 | ||
825 | memset(phy_params, 0, sizeof(*phy_params)); | |
826 | phy_params->type = type; | |
827 | phy_params->interval = cpu_to_le16(interval); | |
828 | phy_params->window = cpu_to_le16(window); | |
829 | ||
830 | plen += sizeof(*phy_params); | |
831 | phy_params++; | |
832 | } | |
a2344b9e JK |
833 | |
834 | hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_PARAMS, | |
45bdd86e | 835 | plen, ext_param_cp); |
a2344b9e JK |
836 | |
837 | memset(&ext_enable_cp, 0, sizeof(ext_enable_cp)); | |
838 | ext_enable_cp.enable = LE_SCAN_ENABLE; | |
839 | ext_enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
840 | ||
841 | hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_ENABLE, | |
842 | sizeof(ext_enable_cp), &ext_enable_cp); | |
843 | } else { | |
844 | struct hci_cp_le_set_scan_param param_cp; | |
845 | struct hci_cp_le_set_scan_enable enable_cp; | |
846 | ||
847 | memset(¶m_cp, 0, sizeof(param_cp)); | |
848 | param_cp.type = type; | |
849 | param_cp.interval = cpu_to_le16(interval); | |
850 | param_cp.window = cpu_to_le16(window); | |
851 | param_cp.own_address_type = own_addr_type; | |
852 | param_cp.filter_policy = filter_policy; | |
853 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), | |
854 | ¶m_cp); | |
855 | ||
856 | memset(&enable_cp, 0, sizeof(enable_cp)); | |
857 | enable_cp.enable = LE_SCAN_ENABLE; | |
858 | enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
859 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), | |
860 | &enable_cp); | |
861 | } | |
3baef810 JK |
862 | } |
863 | ||
864 | void hci_req_add_le_passive_scan(struct hci_request *req) | |
865 | { | |
0857dd3b JH |
866 | struct hci_dev *hdev = req->hdev; |
867 | u8 own_addr_type; | |
868 | u8 filter_policy; | |
869 | ||
870 | /* Set require_privacy to false since no SCAN_REQ are send | |
871 | * during passive scanning. Not using an non-resolvable address | |
872 | * here is important so that peer devices using direct | |
873 | * advertising with our address will be correctly reported | |
874 | * by the controller. | |
875 | */ | |
82a37ade JH |
876 | if (hci_update_random_address(req, false, scan_use_rpa(hdev), |
877 | &own_addr_type)) | |
0857dd3b JH |
878 | return; |
879 | ||
880 | /* Adding or removing entries from the white list must | |
881 | * happen before enabling scanning. The controller does | |
882 | * not allow white list modification while scanning. | |
883 | */ | |
884 | filter_policy = update_white_list(req); | |
885 | ||
886 | /* When the controller is using random resolvable addresses and | |
887 | * with that having LE privacy enabled, then controllers with | |
888 | * Extended Scanner Filter Policies support can now enable support | |
889 | * for handling directed advertising. | |
890 | * | |
891 | * So instead of using filter polices 0x00 (no whitelist) | |
892 | * and 0x01 (whitelist enabled) use the new filter policies | |
893 | * 0x02 (no whitelist) and 0x03 (whitelist enabled). | |
894 | */ | |
d7a5a11d | 895 | if (hci_dev_test_flag(hdev, HCI_PRIVACY) && |
0857dd3b JH |
896 | (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)) |
897 | filter_policy |= 0x02; | |
898 | ||
3baef810 JK |
899 | hci_req_start_scan(req, LE_SCAN_PASSIVE, hdev->le_scan_interval, |
900 | hdev->le_scan_window, own_addr_type, filter_policy); | |
0857dd3b JH |
901 | } |
902 | ||
de181e88 JK |
903 | static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance) |
904 | { | |
905 | struct adv_info *adv_instance; | |
906 | ||
492ad783 | 907 | /* Instance 0x00 always set local name */ |
de181e88 | 908 | if (instance == 0x00) |
492ad783 | 909 | return 1; |
de181e88 JK |
910 | |
911 | adv_instance = hci_find_adv_instance(hdev, instance); | |
912 | if (!adv_instance) | |
913 | return 0; | |
914 | ||
915 | /* TODO: Take into account the "appearance" and "local-name" flags here. | |
916 | * These are currently being ignored as they are not supported. | |
917 | */ | |
918 | return adv_instance->scan_rsp_len; | |
919 | } | |
920 | ||
f2252570 JH |
921 | static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev) |
922 | { | |
cab054ab | 923 | u8 instance = hdev->cur_adv_instance; |
f2252570 JH |
924 | struct adv_info *adv_instance; |
925 | ||
492ad783 | 926 | /* Instance 0x00 always set local name */ |
f2252570 | 927 | if (instance == 0x00) |
492ad783 | 928 | return 1; |
f2252570 JH |
929 | |
930 | adv_instance = hci_find_adv_instance(hdev, instance); | |
931 | if (!adv_instance) | |
932 | return 0; | |
933 | ||
934 | /* TODO: Take into account the "appearance" and "local-name" flags here. | |
935 | * These are currently being ignored as they are not supported. | |
936 | */ | |
937 | return adv_instance->scan_rsp_len; | |
938 | } | |
939 | ||
940 | void __hci_req_disable_advertising(struct hci_request *req) | |
941 | { | |
45b7749f JK |
942 | if (ext_adv_capable(req->hdev)) { |
943 | struct hci_cp_le_set_ext_adv_enable cp; | |
f2252570 | 944 | |
45b7749f JK |
945 | cp.enable = 0x00; |
946 | /* Disable all sets since we only support one set at the moment */ | |
947 | cp.num_of_sets = 0x00; | |
948 | ||
949 | hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_ENABLE, sizeof(cp), &cp); | |
950 | } else { | |
951 | u8 enable = 0x00; | |
952 | ||
953 | hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); | |
954 | } | |
f2252570 JH |
955 | } |
956 | ||
957 | static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance) | |
958 | { | |
959 | u32 flags; | |
960 | struct adv_info *adv_instance; | |
961 | ||
962 | if (instance == 0x00) { | |
963 | /* Instance 0 always manages the "Tx Power" and "Flags" | |
964 | * fields | |
965 | */ | |
966 | flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS; | |
967 | ||
968 | /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting | |
969 | * corresponds to the "connectable" instance flag. | |
970 | */ | |
971 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) | |
972 | flags |= MGMT_ADV_FLAG_CONNECTABLE; | |
973 | ||
6a19cc8c JH |
974 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) |
975 | flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; | |
976 | else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
d43efbd0 JH |
977 | flags |= MGMT_ADV_FLAG_DISCOV; |
978 | ||
f2252570 JH |
979 | return flags; |
980 | } | |
981 | ||
982 | adv_instance = hci_find_adv_instance(hdev, instance); | |
983 | ||
984 | /* Return 0 when we got an invalid instance identifier. */ | |
985 | if (!adv_instance) | |
986 | return 0; | |
987 | ||
988 | return adv_instance->flags; | |
989 | } | |
990 | ||
82a37ade JH |
991 | static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags) |
992 | { | |
993 | /* If privacy is not enabled don't use RPA */ | |
994 | if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) | |
995 | return false; | |
996 | ||
997 | /* If basic privacy mode is enabled use RPA */ | |
998 | if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) | |
999 | return true; | |
1000 | ||
1001 | /* If limited privacy mode is enabled don't use RPA if we're | |
1002 | * both discoverable and bondable. | |
1003 | */ | |
1004 | if ((flags & MGMT_ADV_FLAG_DISCOV) && | |
1005 | hci_dev_test_flag(hdev, HCI_BONDABLE)) | |
1006 | return false; | |
1007 | ||
1008 | /* We're neither bondable nor discoverable in the limited | |
1009 | * privacy mode, therefore use RPA. | |
1010 | */ | |
1011 | return true; | |
1012 | } | |
1013 | ||
9e1e9f20 ŁR |
1014 | static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable) |
1015 | { | |
1016 | /* If there is no connection we are OK to advertise. */ | |
1017 | if (hci_conn_num(hdev, LE_LINK) == 0) | |
1018 | return true; | |
1019 | ||
1020 | /* Check le_states if there is any connection in slave role. */ | |
1021 | if (hdev->conn_hash.le_num_slave > 0) { | |
1022 | /* Slave connection state and non connectable mode bit 20. */ | |
1023 | if (!connectable && !(hdev->le_states[2] & 0x10)) | |
1024 | return false; | |
1025 | ||
1026 | /* Slave connection state and connectable mode bit 38 | |
1027 | * and scannable bit 21. | |
1028 | */ | |
62ebdc25 ŁR |
1029 | if (connectable && (!(hdev->le_states[4] & 0x40) || |
1030 | !(hdev->le_states[2] & 0x20))) | |
9e1e9f20 ŁR |
1031 | return false; |
1032 | } | |
1033 | ||
1034 | /* Check le_states if there is any connection in master role. */ | |
1035 | if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_slave) { | |
1036 | /* Master connection state and non connectable mode bit 18. */ | |
1037 | if (!connectable && !(hdev->le_states[2] & 0x02)) | |
1038 | return false; | |
1039 | ||
1040 | /* Master connection state and connectable mode bit 35 and | |
1041 | * scannable 19. | |
1042 | */ | |
62ebdc25 | 1043 | if (connectable && (!(hdev->le_states[4] & 0x08) || |
9e1e9f20 ŁR |
1044 | !(hdev->le_states[2] & 0x08))) |
1045 | return false; | |
1046 | } | |
1047 | ||
1048 | return true; | |
1049 | } | |
1050 | ||
f2252570 JH |
1051 | void __hci_req_enable_advertising(struct hci_request *req) |
1052 | { | |
1053 | struct hci_dev *hdev = req->hdev; | |
1054 | struct hci_cp_le_set_adv_param cp; | |
1055 | u8 own_addr_type, enable = 0x01; | |
1056 | bool connectable; | |
ad4a6795 | 1057 | u16 adv_min_interval, adv_max_interval; |
f2252570 JH |
1058 | u32 flags; |
1059 | ||
9e1e9f20 ŁR |
1060 | flags = get_adv_instance_flags(hdev, hdev->cur_adv_instance); |
1061 | ||
1062 | /* If the "connectable" instance flag was not set, then choose between | |
1063 | * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. | |
1064 | */ | |
1065 | connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || | |
1066 | mgmt_get_connectable(hdev); | |
1067 | ||
1068 | if (!is_advertising_allowed(hdev, connectable)) | |
f2252570 JH |
1069 | return; |
1070 | ||
1071 | if (hci_dev_test_flag(hdev, HCI_LE_ADV)) | |
1072 | __hci_req_disable_advertising(req); | |
1073 | ||
1074 | /* Clear the HCI_LE_ADV bit temporarily so that the | |
1075 | * hci_update_random_address knows that it's safe to go ahead | |
1076 | * and write a new random address. The flag will be set back on | |
1077 | * as soon as the SET_ADV_ENABLE HCI command completes. | |
1078 | */ | |
1079 | hci_dev_clear_flag(hdev, HCI_LE_ADV); | |
1080 | ||
f2252570 JH |
1081 | /* Set require_privacy to true only when non-connectable |
1082 | * advertising is used. In that case it is fine to use a | |
1083 | * non-resolvable private address. | |
1084 | */ | |
82a37ade JH |
1085 | if (hci_update_random_address(req, !connectable, |
1086 | adv_use_rpa(hdev, flags), | |
1087 | &own_addr_type) < 0) | |
f2252570 JH |
1088 | return; |
1089 | ||
1090 | memset(&cp, 0, sizeof(cp)); | |
f2252570 | 1091 | |
ad4a6795 | 1092 | if (connectable) { |
f2252570 | 1093 | cp.type = LE_ADV_IND; |
f2252570 | 1094 | |
ad4a6795 SRK |
1095 | adv_min_interval = hdev->le_adv_min_interval; |
1096 | adv_max_interval = hdev->le_adv_max_interval; | |
1097 | } else { | |
1098 | if (get_cur_adv_instance_scan_rsp_len(hdev)) | |
1099 | cp.type = LE_ADV_SCAN_IND; | |
1100 | else | |
1101 | cp.type = LE_ADV_NONCONN_IND; | |
1102 | ||
1103 | if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) || | |
1104 | hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) { | |
1105 | adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN; | |
1106 | adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX; | |
1107 | } else { | |
1108 | adv_min_interval = hdev->le_adv_min_interval; | |
1109 | adv_max_interval = hdev->le_adv_max_interval; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | cp.min_interval = cpu_to_le16(adv_min_interval); | |
1114 | cp.max_interval = cpu_to_le16(adv_max_interval); | |
f2252570 JH |
1115 | cp.own_address_type = own_addr_type; |
1116 | cp.channel_map = hdev->le_adv_channel_map; | |
1117 | ||
1118 | hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp); | |
1119 | ||
1120 | hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); | |
1121 | } | |
1122 | ||
f61851f6 | 1123 | u8 append_local_name(struct hci_dev *hdev, u8 *ptr, u8 ad_len) |
f2252570 | 1124 | { |
cecbf3e9 | 1125 | size_t short_len; |
f61851f6 | 1126 | size_t complete_len; |
f2252570 | 1127 | |
f61851f6 MN |
1128 | /* no space left for name (+ NULL + type + len) */ |
1129 | if ((HCI_MAX_AD_LENGTH - ad_len) < HCI_MAX_SHORT_NAME_LENGTH + 3) | |
cecbf3e9 | 1130 | return ad_len; |
f2252570 | 1131 | |
f61851f6 MN |
1132 | /* use complete name if present and fits */ |
1133 | complete_len = strlen(hdev->dev_name); | |
1134 | if (complete_len && complete_len <= HCI_MAX_SHORT_NAME_LENGTH) | |
1b422066 | 1135 | return eir_append_data(ptr, ad_len, EIR_NAME_COMPLETE, |
f61851f6 | 1136 | hdev->dev_name, complete_len + 1); |
cecbf3e9 | 1137 | |
f61851f6 MN |
1138 | /* use short name if present */ |
1139 | short_len = strlen(hdev->short_name); | |
1140 | if (short_len) | |
1b422066 | 1141 | return eir_append_data(ptr, ad_len, EIR_NAME_SHORT, |
f61851f6 | 1142 | hdev->short_name, short_len + 1); |
cecbf3e9 | 1143 | |
f61851f6 MN |
1144 | /* use shortened full name if present, we already know that name |
1145 | * is longer then HCI_MAX_SHORT_NAME_LENGTH | |
1146 | */ | |
1147 | if (complete_len) { | |
1148 | u8 name[HCI_MAX_SHORT_NAME_LENGTH + 1]; | |
1149 | ||
1150 | memcpy(name, hdev->dev_name, HCI_MAX_SHORT_NAME_LENGTH); | |
1151 | name[HCI_MAX_SHORT_NAME_LENGTH] = '\0'; | |
1152 | ||
1153 | return eir_append_data(ptr, ad_len, EIR_NAME_SHORT, name, | |
1154 | sizeof(name)); | |
f2252570 JH |
1155 | } |
1156 | ||
1157 | return ad_len; | |
1158 | } | |
1159 | ||
1b422066 MN |
1160 | static u8 append_appearance(struct hci_dev *hdev, u8 *ptr, u8 ad_len) |
1161 | { | |
1162 | return eir_append_le16(ptr, ad_len, EIR_APPEARANCE, hdev->appearance); | |
1163 | } | |
1164 | ||
7c295c48 MN |
1165 | static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr) |
1166 | { | |
7ddb30c7 MN |
1167 | u8 scan_rsp_len = 0; |
1168 | ||
1169 | if (hdev->appearance) { | |
1b422066 | 1170 | scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len); |
7ddb30c7 MN |
1171 | } |
1172 | ||
1b422066 | 1173 | return append_local_name(hdev, ptr, scan_rsp_len); |
7c295c48 MN |
1174 | } |
1175 | ||
f2252570 JH |
1176 | static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance, |
1177 | u8 *ptr) | |
1178 | { | |
1179 | struct adv_info *adv_instance; | |
7c295c48 MN |
1180 | u32 instance_flags; |
1181 | u8 scan_rsp_len = 0; | |
f2252570 JH |
1182 | |
1183 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1184 | if (!adv_instance) | |
1185 | return 0; | |
1186 | ||
7c295c48 MN |
1187 | instance_flags = adv_instance->flags; |
1188 | ||
c4960ecf | 1189 | if ((instance_flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) { |
1b422066 | 1190 | scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len); |
c4960ecf MN |
1191 | } |
1192 | ||
1b422066 | 1193 | memcpy(&ptr[scan_rsp_len], adv_instance->scan_rsp_data, |
f2252570 JH |
1194 | adv_instance->scan_rsp_len); |
1195 | ||
7c295c48 | 1196 | scan_rsp_len += adv_instance->scan_rsp_len; |
7c295c48 MN |
1197 | |
1198 | if (instance_flags & MGMT_ADV_FLAG_LOCAL_NAME) | |
1199 | scan_rsp_len = append_local_name(hdev, ptr, scan_rsp_len); | |
1200 | ||
1201 | return scan_rsp_len; | |
f2252570 JH |
1202 | } |
1203 | ||
cab054ab | 1204 | void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance) |
f2252570 JH |
1205 | { |
1206 | struct hci_dev *hdev = req->hdev; | |
f2252570 JH |
1207 | u8 len; |
1208 | ||
1209 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
1210 | return; | |
1211 | ||
a0fb3726 JK |
1212 | if (ext_adv_capable(hdev)) { |
1213 | struct hci_cp_le_set_ext_scan_rsp_data cp; | |
f2252570 | 1214 | |
a0fb3726 | 1215 | memset(&cp, 0, sizeof(cp)); |
f2252570 | 1216 | |
a0fb3726 JK |
1217 | if (instance) |
1218 | len = create_instance_scan_rsp_data(hdev, instance, | |
1219 | cp.data); | |
1220 | else | |
1221 | len = create_default_scan_rsp_data(hdev, cp.data); | |
1222 | ||
1223 | if (hdev->scan_rsp_data_len == len && | |
1224 | !memcmp(cp.data, hdev->scan_rsp_data, len)) | |
1225 | return; | |
1226 | ||
1227 | memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data)); | |
1228 | hdev->scan_rsp_data_len = len; | |
1229 | ||
1230 | cp.handle = 0; | |
1231 | cp.length = len; | |
1232 | cp.operation = LE_SET_ADV_DATA_OP_COMPLETE; | |
1233 | cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG; | |
1234 | ||
1235 | hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA, sizeof(cp), | |
1236 | &cp); | |
1237 | } else { | |
1238 | struct hci_cp_le_set_scan_rsp_data cp; | |
1239 | ||
1240 | memset(&cp, 0, sizeof(cp)); | |
1241 | ||
1242 | if (instance) | |
1243 | len = create_instance_scan_rsp_data(hdev, instance, | |
1244 | cp.data); | |
1245 | else | |
1246 | len = create_default_scan_rsp_data(hdev, cp.data); | |
1247 | ||
1248 | if (hdev->scan_rsp_data_len == len && | |
1249 | !memcmp(cp.data, hdev->scan_rsp_data, len)) | |
1250 | return; | |
f2252570 | 1251 | |
a0fb3726 JK |
1252 | memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data)); |
1253 | hdev->scan_rsp_data_len = len; | |
f2252570 | 1254 | |
a0fb3726 | 1255 | cp.length = len; |
f2252570 | 1256 | |
a0fb3726 JK |
1257 | hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp); |
1258 | } | |
f2252570 JH |
1259 | } |
1260 | ||
f2252570 JH |
1261 | static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr) |
1262 | { | |
1263 | struct adv_info *adv_instance = NULL; | |
1264 | u8 ad_len = 0, flags = 0; | |
1265 | u32 instance_flags; | |
1266 | ||
1267 | /* Return 0 when the current instance identifier is invalid. */ | |
1268 | if (instance) { | |
1269 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1270 | if (!adv_instance) | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | instance_flags = get_adv_instance_flags(hdev, instance); | |
1275 | ||
6012b934 LAD |
1276 | /* If instance already has the flags set skip adding it once |
1277 | * again. | |
1278 | */ | |
1279 | if (adv_instance && eir_get_data(adv_instance->adv_data, | |
1280 | adv_instance->adv_data_len, EIR_FLAGS, | |
1281 | NULL)) | |
1282 | goto skip_flags; | |
1283 | ||
f2252570 JH |
1284 | /* The Add Advertising command allows userspace to set both the general |
1285 | * and limited discoverable flags. | |
1286 | */ | |
1287 | if (instance_flags & MGMT_ADV_FLAG_DISCOV) | |
1288 | flags |= LE_AD_GENERAL; | |
1289 | ||
1290 | if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV) | |
1291 | flags |= LE_AD_LIMITED; | |
1292 | ||
f18ba58f JH |
1293 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) |
1294 | flags |= LE_AD_NO_BREDR; | |
1295 | ||
f2252570 JH |
1296 | if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) { |
1297 | /* If a discovery flag wasn't provided, simply use the global | |
1298 | * settings. | |
1299 | */ | |
1300 | if (!flags) | |
1301 | flags |= mgmt_get_adv_discov_flags(hdev); | |
1302 | ||
f2252570 JH |
1303 | /* If flags would still be empty, then there is no need to |
1304 | * include the "Flags" AD field". | |
1305 | */ | |
1306 | if (flags) { | |
1307 | ptr[0] = 0x02; | |
1308 | ptr[1] = EIR_FLAGS; | |
1309 | ptr[2] = flags; | |
1310 | ||
1311 | ad_len += 3; | |
1312 | ptr += 3; | |
1313 | } | |
1314 | } | |
1315 | ||
6012b934 | 1316 | skip_flags: |
f2252570 JH |
1317 | if (adv_instance) { |
1318 | memcpy(ptr, adv_instance->adv_data, | |
1319 | adv_instance->adv_data_len); | |
1320 | ad_len += adv_instance->adv_data_len; | |
1321 | ptr += adv_instance->adv_data_len; | |
1322 | } | |
1323 | ||
de181e88 JK |
1324 | if (instance_flags & MGMT_ADV_FLAG_TX_POWER) { |
1325 | s8 adv_tx_power; | |
f2252570 | 1326 | |
de181e88 JK |
1327 | if (ext_adv_capable(hdev)) { |
1328 | if (adv_instance) | |
1329 | adv_tx_power = adv_instance->tx_power; | |
1330 | else | |
1331 | adv_tx_power = hdev->adv_tx_power; | |
1332 | } else { | |
1333 | adv_tx_power = hdev->adv_tx_power; | |
1334 | } | |
1335 | ||
1336 | /* Provide Tx Power only if we can provide a valid value for it */ | |
1337 | if (adv_tx_power != HCI_TX_POWER_INVALID) { | |
1338 | ptr[0] = 0x02; | |
1339 | ptr[1] = EIR_TX_POWER; | |
1340 | ptr[2] = (u8)adv_tx_power; | |
1341 | ||
1342 | ad_len += 3; | |
1343 | ptr += 3; | |
1344 | } | |
f2252570 JH |
1345 | } |
1346 | ||
1347 | return ad_len; | |
1348 | } | |
1349 | ||
cab054ab | 1350 | void __hci_req_update_adv_data(struct hci_request *req, u8 instance) |
f2252570 JH |
1351 | { |
1352 | struct hci_dev *hdev = req->hdev; | |
f2252570 JH |
1353 | u8 len; |
1354 | ||
1355 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
1356 | return; | |
1357 | ||
a0fb3726 JK |
1358 | if (ext_adv_capable(hdev)) { |
1359 | struct hci_cp_le_set_ext_adv_data cp; | |
f2252570 | 1360 | |
a0fb3726 | 1361 | memset(&cp, 0, sizeof(cp)); |
f2252570 | 1362 | |
a0fb3726 JK |
1363 | len = create_instance_adv_data(hdev, instance, cp.data); |
1364 | ||
1365 | /* There's nothing to do if the data hasn't changed */ | |
1366 | if (hdev->adv_data_len == len && | |
1367 | memcmp(cp.data, hdev->adv_data, len) == 0) | |
1368 | return; | |
1369 | ||
1370 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1371 | hdev->adv_data_len = len; | |
1372 | ||
1373 | cp.length = len; | |
1374 | cp.handle = 0; | |
1375 | cp.operation = LE_SET_ADV_DATA_OP_COMPLETE; | |
1376 | cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG; | |
f2252570 | 1377 | |
a0fb3726 JK |
1378 | hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_DATA, sizeof(cp), &cp); |
1379 | } else { | |
1380 | struct hci_cp_le_set_adv_data cp; | |
1381 | ||
1382 | memset(&cp, 0, sizeof(cp)); | |
f2252570 | 1383 | |
a0fb3726 JK |
1384 | len = create_instance_adv_data(hdev, instance, cp.data); |
1385 | ||
1386 | /* There's nothing to do if the data hasn't changed */ | |
1387 | if (hdev->adv_data_len == len && | |
1388 | memcmp(cp.data, hdev->adv_data, len) == 0) | |
1389 | return; | |
f2252570 | 1390 | |
a0fb3726 JK |
1391 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); |
1392 | hdev->adv_data_len = len; | |
1393 | ||
1394 | cp.length = len; | |
1395 | ||
1396 | hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); | |
1397 | } | |
f2252570 JH |
1398 | } |
1399 | ||
cab054ab | 1400 | int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance) |
f2252570 JH |
1401 | { |
1402 | struct hci_request req; | |
1403 | ||
1404 | hci_req_init(&req, hdev); | |
1405 | __hci_req_update_adv_data(&req, instance); | |
1406 | ||
1407 | return hci_req_run(&req, NULL); | |
1408 | } | |
1409 | ||
1410 | static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) | |
1411 | { | |
1412 | BT_DBG("%s status %u", hdev->name, status); | |
1413 | } | |
1414 | ||
1415 | void hci_req_reenable_advertising(struct hci_dev *hdev) | |
1416 | { | |
1417 | struct hci_request req; | |
f2252570 JH |
1418 | |
1419 | if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) && | |
17fd08ff | 1420 | list_empty(&hdev->adv_instances)) |
f2252570 JH |
1421 | return; |
1422 | ||
f2252570 JH |
1423 | hci_req_init(&req, hdev); |
1424 | ||
cab054ab JH |
1425 | if (hdev->cur_adv_instance) { |
1426 | __hci_req_schedule_adv_instance(&req, hdev->cur_adv_instance, | |
1427 | true); | |
f2252570 | 1428 | } else { |
de181e88 JK |
1429 | if (ext_adv_capable(hdev)) { |
1430 | __hci_req_start_ext_adv(&req, 0x00); | |
1431 | } else { | |
1432 | __hci_req_update_adv_data(&req, 0x00); | |
1433 | __hci_req_update_scan_rsp_data(&req, 0x00); | |
1434 | __hci_req_enable_advertising(&req); | |
1435 | } | |
f2252570 JH |
1436 | } |
1437 | ||
1438 | hci_req_run(&req, adv_enable_complete); | |
1439 | } | |
1440 | ||
1441 | static void adv_timeout_expire(struct work_struct *work) | |
1442 | { | |
1443 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
1444 | adv_instance_expire.work); | |
1445 | ||
1446 | struct hci_request req; | |
1447 | u8 instance; | |
1448 | ||
1449 | BT_DBG("%s", hdev->name); | |
1450 | ||
1451 | hci_dev_lock(hdev); | |
1452 | ||
1453 | hdev->adv_instance_timeout = 0; | |
1454 | ||
cab054ab | 1455 | instance = hdev->cur_adv_instance; |
f2252570 JH |
1456 | if (instance == 0x00) |
1457 | goto unlock; | |
1458 | ||
1459 | hci_req_init(&req, hdev); | |
1460 | ||
37d3a1fa | 1461 | hci_req_clear_adv_instance(hdev, NULL, &req, instance, false); |
f2252570 JH |
1462 | |
1463 | if (list_empty(&hdev->adv_instances)) | |
1464 | __hci_req_disable_advertising(&req); | |
1465 | ||
550a8ca7 | 1466 | hci_req_run(&req, NULL); |
f2252570 JH |
1467 | |
1468 | unlock: | |
1469 | hci_dev_unlock(hdev); | |
1470 | } | |
1471 | ||
a73c046a JK |
1472 | int hci_get_random_address(struct hci_dev *hdev, bool require_privacy, |
1473 | bool use_rpa, struct adv_info *adv_instance, | |
1474 | u8 *own_addr_type, bdaddr_t *rand_addr) | |
1475 | { | |
1476 | int err; | |
1477 | ||
1478 | bacpy(rand_addr, BDADDR_ANY); | |
1479 | ||
1480 | /* If privacy is enabled use a resolvable private address. If | |
1481 | * current RPA has expired then generate a new one. | |
1482 | */ | |
1483 | if (use_rpa) { | |
1484 | int to; | |
1485 | ||
1486 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
1487 | ||
1488 | if (adv_instance) { | |
1489 | if (!adv_instance->rpa_expired && | |
1490 | !bacmp(&adv_instance->random_addr, &hdev->rpa)) | |
1491 | return 0; | |
1492 | ||
1493 | adv_instance->rpa_expired = false; | |
1494 | } else { | |
1495 | if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) && | |
1496 | !bacmp(&hdev->random_addr, &hdev->rpa)) | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa); | |
1501 | if (err < 0) { | |
1502 | BT_ERR("%s failed to generate new RPA", hdev->name); | |
1503 | return err; | |
1504 | } | |
1505 | ||
1506 | bacpy(rand_addr, &hdev->rpa); | |
1507 | ||
1508 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
1509 | if (adv_instance) | |
1510 | queue_delayed_work(hdev->workqueue, | |
1511 | &adv_instance->rpa_expired_cb, to); | |
1512 | else | |
1513 | queue_delayed_work(hdev->workqueue, | |
1514 | &hdev->rpa_expired, to); | |
1515 | ||
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | /* In case of required privacy without resolvable private address, | |
1520 | * use an non-resolvable private address. This is useful for | |
1521 | * non-connectable advertising. | |
1522 | */ | |
1523 | if (require_privacy) { | |
1524 | bdaddr_t nrpa; | |
1525 | ||
1526 | while (true) { | |
1527 | /* The non-resolvable private address is generated | |
1528 | * from random six bytes with the two most significant | |
1529 | * bits cleared. | |
1530 | */ | |
1531 | get_random_bytes(&nrpa, 6); | |
1532 | nrpa.b[5] &= 0x3f; | |
1533 | ||
1534 | /* The non-resolvable private address shall not be | |
1535 | * equal to the public address. | |
1536 | */ | |
1537 | if (bacmp(&hdev->bdaddr, &nrpa)) | |
1538 | break; | |
1539 | } | |
1540 | ||
1541 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
1542 | bacpy(rand_addr, &nrpa); | |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | ||
1547 | /* No privacy so use a public address. */ | |
1548 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
45b7749f JK |
1553 | void __hci_req_clear_ext_adv_sets(struct hci_request *req) |
1554 | { | |
1555 | hci_req_add(req, HCI_OP_LE_CLEAR_ADV_SETS, 0, NULL); | |
1556 | } | |
1557 | ||
a0fb3726 | 1558 | int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance) |
de181e88 JK |
1559 | { |
1560 | struct hci_cp_le_set_ext_adv_params cp; | |
1561 | struct hci_dev *hdev = req->hdev; | |
1562 | bool connectable; | |
1563 | u32 flags; | |
a73c046a JK |
1564 | bdaddr_t random_addr; |
1565 | u8 own_addr_type; | |
1566 | int err; | |
1567 | struct adv_info *adv_instance; | |
85a721a8 | 1568 | bool secondary_adv; |
de181e88 JK |
1569 | /* In ext adv set param interval is 3 octets */ |
1570 | const u8 adv_interval[3] = { 0x00, 0x08, 0x00 }; | |
1571 | ||
a73c046a JK |
1572 | if (instance > 0) { |
1573 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1574 | if (!adv_instance) | |
1575 | return -EINVAL; | |
1576 | } else { | |
1577 | adv_instance = NULL; | |
1578 | } | |
1579 | ||
de181e88 JK |
1580 | flags = get_adv_instance_flags(hdev, instance); |
1581 | ||
1582 | /* If the "connectable" instance flag was not set, then choose between | |
1583 | * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. | |
1584 | */ | |
1585 | connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || | |
1586 | mgmt_get_connectable(hdev); | |
1587 | ||
75edd1f2 | 1588 | if (!is_advertising_allowed(hdev, connectable)) |
de181e88 JK |
1589 | return -EPERM; |
1590 | ||
a73c046a JK |
1591 | /* Set require_privacy to true only when non-connectable |
1592 | * advertising is used. In that case it is fine to use a | |
1593 | * non-resolvable private address. | |
1594 | */ | |
1595 | err = hci_get_random_address(hdev, !connectable, | |
1596 | adv_use_rpa(hdev, flags), adv_instance, | |
1597 | &own_addr_type, &random_addr); | |
1598 | if (err < 0) | |
1599 | return err; | |
1600 | ||
de181e88 JK |
1601 | memset(&cp, 0, sizeof(cp)); |
1602 | ||
1603 | memcpy(cp.min_interval, adv_interval, sizeof(cp.min_interval)); | |
1604 | memcpy(cp.max_interval, adv_interval, sizeof(cp.max_interval)); | |
1605 | ||
85a721a8 JK |
1606 | secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK); |
1607 | ||
1608 | if (connectable) { | |
1609 | if (secondary_adv) | |
1610 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND); | |
1611 | else | |
1612 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND); | |
1613 | } else if (get_adv_instance_scan_rsp_len(hdev, instance)) { | |
1614 | if (secondary_adv) | |
1615 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND); | |
1616 | else | |
1617 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND); | |
1618 | } else { | |
1619 | if (secondary_adv) | |
1620 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND); | |
1621 | else | |
1622 | cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND); | |
1623 | } | |
de181e88 | 1624 | |
a73c046a | 1625 | cp.own_addr_type = own_addr_type; |
de181e88 JK |
1626 | cp.channel_map = hdev->le_adv_channel_map; |
1627 | cp.tx_power = 127; | |
1d0fac2c | 1628 | cp.handle = instance; |
de181e88 | 1629 | |
85a721a8 JK |
1630 | if (flags & MGMT_ADV_FLAG_SEC_2M) { |
1631 | cp.primary_phy = HCI_ADV_PHY_1M; | |
1632 | cp.secondary_phy = HCI_ADV_PHY_2M; | |
1633 | } else if (flags & MGMT_ADV_FLAG_SEC_CODED) { | |
1634 | cp.primary_phy = HCI_ADV_PHY_CODED; | |
1635 | cp.secondary_phy = HCI_ADV_PHY_CODED; | |
1636 | } else { | |
1637 | /* In all other cases use 1M */ | |
1638 | cp.primary_phy = HCI_ADV_PHY_1M; | |
1639 | cp.secondary_phy = HCI_ADV_PHY_1M; | |
1640 | } | |
1641 | ||
de181e88 JK |
1642 | hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_PARAMS, sizeof(cp), &cp); |
1643 | ||
a73c046a JK |
1644 | if (own_addr_type == ADDR_LE_DEV_RANDOM && |
1645 | bacmp(&random_addr, BDADDR_ANY)) { | |
1646 | struct hci_cp_le_set_adv_set_rand_addr cp; | |
1647 | ||
1648 | /* Check if random address need to be updated */ | |
1649 | if (adv_instance) { | |
1650 | if (!bacmp(&random_addr, &adv_instance->random_addr)) | |
1651 | return 0; | |
1652 | } else { | |
1653 | if (!bacmp(&random_addr, &hdev->random_addr)) | |
1654 | return 0; | |
1655 | } | |
1656 | ||
1657 | memset(&cp, 0, sizeof(cp)); | |
1658 | ||
1659 | cp.handle = 0; | |
1660 | bacpy(&cp.bdaddr, &random_addr); | |
1661 | ||
1662 | hci_req_add(req, | |
1663 | HCI_OP_LE_SET_ADV_SET_RAND_ADDR, | |
1664 | sizeof(cp), &cp); | |
1665 | } | |
1666 | ||
de181e88 JK |
1667 | return 0; |
1668 | } | |
1669 | ||
1d0fac2c | 1670 | int __hci_req_enable_ext_advertising(struct hci_request *req, u8 instance) |
de181e88 | 1671 | { |
1d0fac2c | 1672 | struct hci_dev *hdev = req->hdev; |
de181e88 JK |
1673 | struct hci_cp_le_set_ext_adv_enable *cp; |
1674 | struct hci_cp_ext_adv_set *adv_set; | |
1675 | u8 data[sizeof(*cp) + sizeof(*adv_set) * 1]; | |
1d0fac2c LAD |
1676 | struct adv_info *adv_instance; |
1677 | ||
1678 | if (instance > 0) { | |
1679 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1680 | if (!adv_instance) | |
1681 | return -EINVAL; | |
1682 | } else { | |
1683 | adv_instance = NULL; | |
1684 | } | |
de181e88 JK |
1685 | |
1686 | cp = (void *) data; | |
1687 | adv_set = (void *) cp->data; | |
1688 | ||
1689 | memset(cp, 0, sizeof(*cp)); | |
1690 | ||
1691 | cp->enable = 0x01; | |
1692 | cp->num_of_sets = 0x01; | |
1693 | ||
1694 | memset(adv_set, 0, sizeof(*adv_set)); | |
1695 | ||
1d0fac2c LAD |
1696 | adv_set->handle = instance; |
1697 | ||
1698 | /* Set duration per instance since controller is responsible for | |
1699 | * scheduling it. | |
1700 | */ | |
1701 | if (adv_instance && adv_instance->duration) { | |
10bbffa3 | 1702 | u16 duration = adv_instance->timeout * MSEC_PER_SEC; |
1d0fac2c LAD |
1703 | |
1704 | /* Time = N * 10 ms */ | |
1705 | adv_set->duration = cpu_to_le16(duration / 10); | |
1706 | } | |
de181e88 JK |
1707 | |
1708 | hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_ENABLE, | |
1709 | sizeof(*cp) + sizeof(*adv_set) * cp->num_of_sets, | |
1710 | data); | |
1d0fac2c LAD |
1711 | |
1712 | return 0; | |
de181e88 JK |
1713 | } |
1714 | ||
1715 | int __hci_req_start_ext_adv(struct hci_request *req, u8 instance) | |
1716 | { | |
45b7749f | 1717 | struct hci_dev *hdev = req->hdev; |
de181e88 JK |
1718 | int err; |
1719 | ||
45b7749f JK |
1720 | if (hci_dev_test_flag(hdev, HCI_LE_ADV)) |
1721 | __hci_req_disable_advertising(req); | |
1722 | ||
de181e88 JK |
1723 | err = __hci_req_setup_ext_adv_instance(req, instance); |
1724 | if (err < 0) | |
1725 | return err; | |
1726 | ||
a0fb3726 | 1727 | __hci_req_update_scan_rsp_data(req, instance); |
1d0fac2c | 1728 | __hci_req_enable_ext_advertising(req, instance); |
de181e88 JK |
1729 | |
1730 | return 0; | |
1731 | } | |
1732 | ||
f2252570 JH |
1733 | int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance, |
1734 | bool force) | |
1735 | { | |
1736 | struct hci_dev *hdev = req->hdev; | |
1737 | struct adv_info *adv_instance = NULL; | |
1738 | u16 timeout; | |
1739 | ||
1740 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || | |
17fd08ff | 1741 | list_empty(&hdev->adv_instances)) |
f2252570 JH |
1742 | return -EPERM; |
1743 | ||
1744 | if (hdev->adv_instance_timeout) | |
1745 | return -EBUSY; | |
1746 | ||
1747 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1748 | if (!adv_instance) | |
1749 | return -ENOENT; | |
1750 | ||
1751 | /* A zero timeout means unlimited advertising. As long as there is | |
1752 | * only one instance, duration should be ignored. We still set a timeout | |
1753 | * in case further instances are being added later on. | |
1754 | * | |
1755 | * If the remaining lifetime of the instance is more than the duration | |
1756 | * then the timeout corresponds to the duration, otherwise it will be | |
1757 | * reduced to the remaining instance lifetime. | |
1758 | */ | |
1759 | if (adv_instance->timeout == 0 || | |
1760 | adv_instance->duration <= adv_instance->remaining_time) | |
1761 | timeout = adv_instance->duration; | |
1762 | else | |
1763 | timeout = adv_instance->remaining_time; | |
1764 | ||
1765 | /* The remaining time is being reduced unless the instance is being | |
1766 | * advertised without time limit. | |
1767 | */ | |
1768 | if (adv_instance->timeout) | |
1769 | adv_instance->remaining_time = | |
1770 | adv_instance->remaining_time - timeout; | |
1771 | ||
1d0fac2c LAD |
1772 | /* Only use work for scheduling instances with legacy advertising */ |
1773 | if (!ext_adv_capable(hdev)) { | |
1774 | hdev->adv_instance_timeout = timeout; | |
1775 | queue_delayed_work(hdev->req_workqueue, | |
f2252570 JH |
1776 | &hdev->adv_instance_expire, |
1777 | msecs_to_jiffies(timeout * 1000)); | |
1d0fac2c | 1778 | } |
f2252570 JH |
1779 | |
1780 | /* If we're just re-scheduling the same instance again then do not | |
1781 | * execute any HCI commands. This happens when a single instance is | |
1782 | * being advertised. | |
1783 | */ | |
1784 | if (!force && hdev->cur_adv_instance == instance && | |
1785 | hci_dev_test_flag(hdev, HCI_LE_ADV)) | |
1786 | return 0; | |
1787 | ||
1788 | hdev->cur_adv_instance = instance; | |
de181e88 JK |
1789 | if (ext_adv_capable(hdev)) { |
1790 | __hci_req_start_ext_adv(req, instance); | |
1791 | } else { | |
1792 | __hci_req_update_adv_data(req, instance); | |
1793 | __hci_req_update_scan_rsp_data(req, instance); | |
1794 | __hci_req_enable_advertising(req); | |
1795 | } | |
f2252570 JH |
1796 | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | static void cancel_adv_timeout(struct hci_dev *hdev) | |
1801 | { | |
1802 | if (hdev->adv_instance_timeout) { | |
1803 | hdev->adv_instance_timeout = 0; | |
1804 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | /* For a single instance: | |
1809 | * - force == true: The instance will be removed even when its remaining | |
1810 | * lifetime is not zero. | |
1811 | * - force == false: the instance will be deactivated but kept stored unless | |
1812 | * the remaining lifetime is zero. | |
1813 | * | |
1814 | * For instance == 0x00: | |
1815 | * - force == true: All instances will be removed regardless of their timeout | |
1816 | * setting. | |
1817 | * - force == false: Only instances that have a timeout will be removed. | |
1818 | */ | |
37d3a1fa JH |
1819 | void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk, |
1820 | struct hci_request *req, u8 instance, | |
1821 | bool force) | |
f2252570 JH |
1822 | { |
1823 | struct adv_info *adv_instance, *n, *next_instance = NULL; | |
1824 | int err; | |
1825 | u8 rem_inst; | |
1826 | ||
1827 | /* Cancel any timeout concerning the removed instance(s). */ | |
1828 | if (!instance || hdev->cur_adv_instance == instance) | |
1829 | cancel_adv_timeout(hdev); | |
1830 | ||
1831 | /* Get the next instance to advertise BEFORE we remove | |
1832 | * the current one. This can be the same instance again | |
1833 | * if there is only one instance. | |
1834 | */ | |
1835 | if (instance && hdev->cur_adv_instance == instance) | |
1836 | next_instance = hci_get_next_instance(hdev, instance); | |
1837 | ||
1838 | if (instance == 0x00) { | |
1839 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, | |
1840 | list) { | |
1841 | if (!(force || adv_instance->timeout)) | |
1842 | continue; | |
1843 | ||
1844 | rem_inst = adv_instance->instance; | |
1845 | err = hci_remove_adv_instance(hdev, rem_inst); | |
1846 | if (!err) | |
37d3a1fa | 1847 | mgmt_advertising_removed(sk, hdev, rem_inst); |
f2252570 | 1848 | } |
f2252570 JH |
1849 | } else { |
1850 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1851 | ||
1852 | if (force || (adv_instance && adv_instance->timeout && | |
1853 | !adv_instance->remaining_time)) { | |
1854 | /* Don't advertise a removed instance. */ | |
1855 | if (next_instance && | |
1856 | next_instance->instance == instance) | |
1857 | next_instance = NULL; | |
1858 | ||
1859 | err = hci_remove_adv_instance(hdev, instance); | |
1860 | if (!err) | |
37d3a1fa | 1861 | mgmt_advertising_removed(sk, hdev, instance); |
f2252570 JH |
1862 | } |
1863 | } | |
1864 | ||
f2252570 JH |
1865 | if (!req || !hdev_is_powered(hdev) || |
1866 | hci_dev_test_flag(hdev, HCI_ADVERTISING)) | |
1867 | return; | |
1868 | ||
1869 | if (next_instance) | |
1870 | __hci_req_schedule_adv_instance(req, next_instance->instance, | |
1871 | false); | |
1872 | } | |
1873 | ||
0857dd3b JH |
1874 | static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) |
1875 | { | |
1876 | struct hci_dev *hdev = req->hdev; | |
1877 | ||
1878 | /* If we're advertising or initiating an LE connection we can't | |
1879 | * go ahead and change the random address at this time. This is | |
1880 | * because the eventual initiator address used for the | |
1881 | * subsequently created connection will be undefined (some | |
1882 | * controllers use the new address and others the one we had | |
1883 | * when the operation started). | |
1884 | * | |
1885 | * In this kind of scenario skip the update and let the random | |
1886 | * address be updated at the next cycle. | |
1887 | */ | |
d7a5a11d | 1888 | if (hci_dev_test_flag(hdev, HCI_LE_ADV) || |
e7d9ab73 | 1889 | hci_lookup_le_connect(hdev)) { |
0857dd3b | 1890 | BT_DBG("Deferring random address update"); |
a1536da2 | 1891 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
0857dd3b JH |
1892 | return; |
1893 | } | |
1894 | ||
1895 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); | |
1896 | } | |
1897 | ||
1898 | int hci_update_random_address(struct hci_request *req, bool require_privacy, | |
82a37ade | 1899 | bool use_rpa, u8 *own_addr_type) |
0857dd3b JH |
1900 | { |
1901 | struct hci_dev *hdev = req->hdev; | |
1902 | int err; | |
1903 | ||
1904 | /* If privacy is enabled use a resolvable private address. If | |
1905 | * current RPA has expired or there is something else than | |
1906 | * the current RPA in use, then generate a new one. | |
1907 | */ | |
82a37ade | 1908 | if (use_rpa) { |
0857dd3b JH |
1909 | int to; |
1910 | ||
1911 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
1912 | ||
a69d8927 | 1913 | if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) && |
0857dd3b JH |
1914 | !bacmp(&hdev->random_addr, &hdev->rpa)) |
1915 | return 0; | |
1916 | ||
1917 | err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa); | |
1918 | if (err < 0) { | |
2064ee33 | 1919 | bt_dev_err(hdev, "failed to generate new RPA"); |
0857dd3b JH |
1920 | return err; |
1921 | } | |
1922 | ||
1923 | set_random_addr(req, &hdev->rpa); | |
1924 | ||
1925 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
1926 | queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); | |
1927 | ||
1928 | return 0; | |
1929 | } | |
1930 | ||
1931 | /* In case of required privacy without resolvable private address, | |
1932 | * use an non-resolvable private address. This is useful for active | |
1933 | * scanning and non-connectable advertising. | |
1934 | */ | |
1935 | if (require_privacy) { | |
1936 | bdaddr_t nrpa; | |
1937 | ||
1938 | while (true) { | |
1939 | /* The non-resolvable private address is generated | |
1940 | * from random six bytes with the two most significant | |
1941 | * bits cleared. | |
1942 | */ | |
1943 | get_random_bytes(&nrpa, 6); | |
1944 | nrpa.b[5] &= 0x3f; | |
1945 | ||
1946 | /* The non-resolvable private address shall not be | |
1947 | * equal to the public address. | |
1948 | */ | |
1949 | if (bacmp(&hdev->bdaddr, &nrpa)) | |
1950 | break; | |
1951 | } | |
1952 | ||
1953 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
1954 | set_random_addr(req, &nrpa); | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | /* If forcing static address is in use or there is no public | |
1959 | * address use the static address as random address (but skip | |
1960 | * the HCI command if the current random address is already the | |
1961 | * static one. | |
50b5b952 MH |
1962 | * |
1963 | * In case BR/EDR has been disabled on a dual-mode controller | |
1964 | * and a static address has been configured, then use that | |
1965 | * address instead of the public BR/EDR address. | |
0857dd3b | 1966 | */ |
b7cb93e5 | 1967 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 1968 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 1969 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 1970 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
0857dd3b JH |
1971 | *own_addr_type = ADDR_LE_DEV_RANDOM; |
1972 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
1973 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
1974 | &hdev->static_addr); | |
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | /* Neither privacy nor static address is being used so use a | |
1979 | * public address. | |
1980 | */ | |
1981 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
1982 | ||
1983 | return 0; | |
1984 | } | |
2cf22218 | 1985 | |
405a2611 JH |
1986 | static bool disconnected_whitelist_entries(struct hci_dev *hdev) |
1987 | { | |
1988 | struct bdaddr_list *b; | |
1989 | ||
1990 | list_for_each_entry(b, &hdev->whitelist, list) { | |
1991 | struct hci_conn *conn; | |
1992 | ||
1993 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr); | |
1994 | if (!conn) | |
1995 | return true; | |
1996 | ||
1997 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
1998 | return true; | |
1999 | } | |
2000 | ||
2001 | return false; | |
2002 | } | |
2003 | ||
01b1cb87 | 2004 | void __hci_req_update_scan(struct hci_request *req) |
405a2611 JH |
2005 | { |
2006 | struct hci_dev *hdev = req->hdev; | |
2007 | u8 scan; | |
2008 | ||
d7a5a11d | 2009 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) |
405a2611 JH |
2010 | return; |
2011 | ||
2012 | if (!hdev_is_powered(hdev)) | |
2013 | return; | |
2014 | ||
2015 | if (mgmt_powering_down(hdev)) | |
2016 | return; | |
2017 | ||
d7a5a11d | 2018 | if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) || |
405a2611 JH |
2019 | disconnected_whitelist_entries(hdev)) |
2020 | scan = SCAN_PAGE; | |
2021 | else | |
2022 | scan = SCAN_DISABLED; | |
2023 | ||
d7a5a11d | 2024 | if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) |
405a2611 JH |
2025 | scan |= SCAN_INQUIRY; |
2026 | ||
01b1cb87 JH |
2027 | if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) && |
2028 | test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY)) | |
2029 | return; | |
2030 | ||
405a2611 JH |
2031 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
2032 | } | |
2033 | ||
01b1cb87 | 2034 | static int update_scan(struct hci_request *req, unsigned long opt) |
405a2611 | 2035 | { |
01b1cb87 JH |
2036 | hci_dev_lock(req->hdev); |
2037 | __hci_req_update_scan(req); | |
2038 | hci_dev_unlock(req->hdev); | |
2039 | return 0; | |
2040 | } | |
405a2611 | 2041 | |
01b1cb87 JH |
2042 | static void scan_update_work(struct work_struct *work) |
2043 | { | |
2044 | struct hci_dev *hdev = container_of(work, struct hci_dev, scan_update); | |
2045 | ||
2046 | hci_req_sync(hdev, update_scan, 0, HCI_CMD_TIMEOUT, NULL); | |
405a2611 JH |
2047 | } |
2048 | ||
53c0ba74 JH |
2049 | static int connectable_update(struct hci_request *req, unsigned long opt) |
2050 | { | |
2051 | struct hci_dev *hdev = req->hdev; | |
2052 | ||
2053 | hci_dev_lock(hdev); | |
2054 | ||
2055 | __hci_req_update_scan(req); | |
2056 | ||
2057 | /* If BR/EDR is not enabled and we disable advertising as a | |
2058 | * by-product of disabling connectable, we need to update the | |
2059 | * advertising flags. | |
2060 | */ | |
2061 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
cab054ab | 2062 | __hci_req_update_adv_data(req, hdev->cur_adv_instance); |
53c0ba74 JH |
2063 | |
2064 | /* Update the advertising parameters if necessary */ | |
2065 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || | |
de181e88 JK |
2066 | !list_empty(&hdev->adv_instances)) { |
2067 | if (ext_adv_capable(hdev)) | |
2068 | __hci_req_start_ext_adv(req, hdev->cur_adv_instance); | |
2069 | else | |
2070 | __hci_req_enable_advertising(req); | |
2071 | } | |
53c0ba74 JH |
2072 | |
2073 | __hci_update_background_scan(req); | |
2074 | ||
2075 | hci_dev_unlock(hdev); | |
2076 | ||
2077 | return 0; | |
2078 | } | |
2079 | ||
2080 | static void connectable_update_work(struct work_struct *work) | |
2081 | { | |
2082 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2083 | connectable_update); | |
2084 | u8 status; | |
2085 | ||
2086 | hci_req_sync(hdev, connectable_update, 0, HCI_CMD_TIMEOUT, &status); | |
2087 | mgmt_set_connectable_complete(hdev, status); | |
2088 | } | |
2089 | ||
14bf5eac JH |
2090 | static u8 get_service_classes(struct hci_dev *hdev) |
2091 | { | |
2092 | struct bt_uuid *uuid; | |
2093 | u8 val = 0; | |
2094 | ||
2095 | list_for_each_entry(uuid, &hdev->uuids, list) | |
2096 | val |= uuid->svc_hint; | |
2097 | ||
2098 | return val; | |
2099 | } | |
2100 | ||
2101 | void __hci_req_update_class(struct hci_request *req) | |
2102 | { | |
2103 | struct hci_dev *hdev = req->hdev; | |
2104 | u8 cod[3]; | |
2105 | ||
2106 | BT_DBG("%s", hdev->name); | |
2107 | ||
2108 | if (!hdev_is_powered(hdev)) | |
2109 | return; | |
2110 | ||
2111 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
2112 | return; | |
2113 | ||
2114 | if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) | |
2115 | return; | |
2116 | ||
2117 | cod[0] = hdev->minor_class; | |
2118 | cod[1] = hdev->major_class; | |
2119 | cod[2] = get_service_classes(hdev); | |
2120 | ||
2121 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) | |
2122 | cod[1] |= 0x20; | |
2123 | ||
2124 | if (memcmp(cod, hdev->dev_class, 3) == 0) | |
2125 | return; | |
2126 | ||
2127 | hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod); | |
2128 | } | |
2129 | ||
aed1a885 JH |
2130 | static void write_iac(struct hci_request *req) |
2131 | { | |
2132 | struct hci_dev *hdev = req->hdev; | |
2133 | struct hci_cp_write_current_iac_lap cp; | |
2134 | ||
2135 | if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
2136 | return; | |
2137 | ||
2138 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) { | |
2139 | /* Limited discoverable mode */ | |
2140 | cp.num_iac = min_t(u8, hdev->num_iac, 2); | |
2141 | cp.iac_lap[0] = 0x00; /* LIAC */ | |
2142 | cp.iac_lap[1] = 0x8b; | |
2143 | cp.iac_lap[2] = 0x9e; | |
2144 | cp.iac_lap[3] = 0x33; /* GIAC */ | |
2145 | cp.iac_lap[4] = 0x8b; | |
2146 | cp.iac_lap[5] = 0x9e; | |
2147 | } else { | |
2148 | /* General discoverable mode */ | |
2149 | cp.num_iac = 1; | |
2150 | cp.iac_lap[0] = 0x33; /* GIAC */ | |
2151 | cp.iac_lap[1] = 0x8b; | |
2152 | cp.iac_lap[2] = 0x9e; | |
2153 | } | |
2154 | ||
2155 | hci_req_add(req, HCI_OP_WRITE_CURRENT_IAC_LAP, | |
2156 | (cp.num_iac * 3) + 1, &cp); | |
2157 | } | |
2158 | ||
2159 | static int discoverable_update(struct hci_request *req, unsigned long opt) | |
2160 | { | |
2161 | struct hci_dev *hdev = req->hdev; | |
2162 | ||
2163 | hci_dev_lock(hdev); | |
2164 | ||
2165 | if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { | |
2166 | write_iac(req); | |
2167 | __hci_req_update_scan(req); | |
2168 | __hci_req_update_class(req); | |
2169 | } | |
2170 | ||
2171 | /* Advertising instances don't use the global discoverable setting, so | |
2172 | * only update AD if advertising was enabled using Set Advertising. | |
2173 | */ | |
82a37ade | 2174 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) { |
cab054ab | 2175 | __hci_req_update_adv_data(req, 0x00); |
aed1a885 | 2176 | |
82a37ade JH |
2177 | /* Discoverable mode affects the local advertising |
2178 | * address in limited privacy mode. | |
2179 | */ | |
de181e88 JK |
2180 | if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) { |
2181 | if (ext_adv_capable(hdev)) | |
2182 | __hci_req_start_ext_adv(req, 0x00); | |
2183 | else | |
2184 | __hci_req_enable_advertising(req); | |
2185 | } | |
82a37ade JH |
2186 | } |
2187 | ||
aed1a885 JH |
2188 | hci_dev_unlock(hdev); |
2189 | ||
2190 | return 0; | |
2191 | } | |
2192 | ||
2193 | static void discoverable_update_work(struct work_struct *work) | |
2194 | { | |
2195 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2196 | discoverable_update); | |
2197 | u8 status; | |
2198 | ||
2199 | hci_req_sync(hdev, discoverable_update, 0, HCI_CMD_TIMEOUT, &status); | |
2200 | mgmt_set_discoverable_complete(hdev, status); | |
2201 | } | |
2202 | ||
dcc0f0d9 JH |
2203 | void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn, |
2204 | u8 reason) | |
2205 | { | |
2206 | switch (conn->state) { | |
2207 | case BT_CONNECTED: | |
2208 | case BT_CONFIG: | |
2209 | if (conn->type == AMP_LINK) { | |
2210 | struct hci_cp_disconn_phy_link cp; | |
2211 | ||
2212 | cp.phy_handle = HCI_PHY_HANDLE(conn->handle); | |
2213 | cp.reason = reason; | |
2214 | hci_req_add(req, HCI_OP_DISCONN_PHY_LINK, sizeof(cp), | |
2215 | &cp); | |
2216 | } else { | |
2217 | struct hci_cp_disconnect dc; | |
2218 | ||
2219 | dc.handle = cpu_to_le16(conn->handle); | |
2220 | dc.reason = reason; | |
2221 | hci_req_add(req, HCI_OP_DISCONNECT, sizeof(dc), &dc); | |
2222 | } | |
2223 | ||
2224 | conn->state = BT_DISCONN; | |
2225 | ||
2226 | break; | |
2227 | case BT_CONNECT: | |
2228 | if (conn->type == LE_LINK) { | |
2229 | if (test_bit(HCI_CONN_SCANNING, &conn->flags)) | |
2230 | break; | |
2231 | hci_req_add(req, HCI_OP_LE_CREATE_CONN_CANCEL, | |
2232 | 0, NULL); | |
2233 | } else if (conn->type == ACL_LINK) { | |
2234 | if (req->hdev->hci_ver < BLUETOOTH_VER_1_2) | |
2235 | break; | |
2236 | hci_req_add(req, HCI_OP_CREATE_CONN_CANCEL, | |
2237 | 6, &conn->dst); | |
2238 | } | |
2239 | break; | |
2240 | case BT_CONNECT2: | |
2241 | if (conn->type == ACL_LINK) { | |
2242 | struct hci_cp_reject_conn_req rej; | |
2243 | ||
2244 | bacpy(&rej.bdaddr, &conn->dst); | |
2245 | rej.reason = reason; | |
2246 | ||
2247 | hci_req_add(req, HCI_OP_REJECT_CONN_REQ, | |
2248 | sizeof(rej), &rej); | |
2249 | } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { | |
2250 | struct hci_cp_reject_sync_conn_req rej; | |
2251 | ||
2252 | bacpy(&rej.bdaddr, &conn->dst); | |
2253 | ||
2254 | /* SCO rejection has its own limited set of | |
2255 | * allowed error values (0x0D-0x0F) which isn't | |
2256 | * compatible with most values passed to this | |
2257 | * function. To be safe hard-code one of the | |
2258 | * values that's suitable for SCO. | |
2259 | */ | |
3c0975a7 | 2260 | rej.reason = HCI_ERROR_REJ_LIMITED_RESOURCES; |
dcc0f0d9 JH |
2261 | |
2262 | hci_req_add(req, HCI_OP_REJECT_SYNC_CONN_REQ, | |
2263 | sizeof(rej), &rej); | |
2264 | } | |
2265 | break; | |
2266 | default: | |
2267 | conn->state = BT_CLOSED; | |
2268 | break; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | static void abort_conn_complete(struct hci_dev *hdev, u8 status, u16 opcode) | |
2273 | { | |
2274 | if (status) | |
2275 | BT_DBG("Failed to abort connection: status 0x%2.2x", status); | |
2276 | } | |
2277 | ||
2278 | int hci_abort_conn(struct hci_conn *conn, u8 reason) | |
2279 | { | |
2280 | struct hci_request req; | |
2281 | int err; | |
2282 | ||
2283 | hci_req_init(&req, conn->hdev); | |
2284 | ||
2285 | __hci_abort_conn(&req, conn, reason); | |
2286 | ||
2287 | err = hci_req_run(&req, abort_conn_complete); | |
2288 | if (err && err != -ENODATA) { | |
2064ee33 | 2289 | bt_dev_err(conn->hdev, "failed to run HCI request: err %d", err); |
dcc0f0d9 JH |
2290 | return err; |
2291 | } | |
2292 | ||
2293 | return 0; | |
2294 | } | |
5fc16cc4 | 2295 | |
a1d01db1 | 2296 | static int update_bg_scan(struct hci_request *req, unsigned long opt) |
2e93e53b JH |
2297 | { |
2298 | hci_dev_lock(req->hdev); | |
2299 | __hci_update_background_scan(req); | |
2300 | hci_dev_unlock(req->hdev); | |
a1d01db1 | 2301 | return 0; |
2e93e53b JH |
2302 | } |
2303 | ||
2304 | static void bg_scan_update(struct work_struct *work) | |
2305 | { | |
2306 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2307 | bg_scan_update); | |
84235d22 JH |
2308 | struct hci_conn *conn; |
2309 | u8 status; | |
2310 | int err; | |
2311 | ||
2312 | err = hci_req_sync(hdev, update_bg_scan, 0, HCI_CMD_TIMEOUT, &status); | |
2313 | if (!err) | |
2314 | return; | |
2315 | ||
2316 | hci_dev_lock(hdev); | |
2317 | ||
2318 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); | |
2319 | if (conn) | |
2320 | hci_le_conn_failed(conn, status); | |
2e93e53b | 2321 | |
84235d22 | 2322 | hci_dev_unlock(hdev); |
2e93e53b JH |
2323 | } |
2324 | ||
f4a2cb4d | 2325 | static int le_scan_disable(struct hci_request *req, unsigned long opt) |
7c1fbed2 | 2326 | { |
f4a2cb4d JH |
2327 | hci_req_add_le_scan_disable(req); |
2328 | return 0; | |
7c1fbed2 JH |
2329 | } |
2330 | ||
f4a2cb4d | 2331 | static int bredr_inquiry(struct hci_request *req, unsigned long opt) |
7c1fbed2 | 2332 | { |
f4a2cb4d | 2333 | u8 length = opt; |
78b781ca JH |
2334 | const u8 giac[3] = { 0x33, 0x8b, 0x9e }; |
2335 | const u8 liac[3] = { 0x00, 0x8b, 0x9e }; | |
7c1fbed2 | 2336 | struct hci_cp_inquiry cp; |
7c1fbed2 | 2337 | |
f4a2cb4d | 2338 | BT_DBG("%s", req->hdev->name); |
7c1fbed2 | 2339 | |
f4a2cb4d JH |
2340 | hci_dev_lock(req->hdev); |
2341 | hci_inquiry_cache_flush(req->hdev); | |
2342 | hci_dev_unlock(req->hdev); | |
7c1fbed2 | 2343 | |
f4a2cb4d | 2344 | memset(&cp, 0, sizeof(cp)); |
78b781ca JH |
2345 | |
2346 | if (req->hdev->discovery.limited) | |
2347 | memcpy(&cp.lap, liac, sizeof(cp.lap)); | |
2348 | else | |
2349 | memcpy(&cp.lap, giac, sizeof(cp.lap)); | |
2350 | ||
f4a2cb4d | 2351 | cp.length = length; |
7c1fbed2 | 2352 | |
f4a2cb4d | 2353 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
7c1fbed2 | 2354 | |
a1d01db1 | 2355 | return 0; |
7c1fbed2 JH |
2356 | } |
2357 | ||
2358 | static void le_scan_disable_work(struct work_struct *work) | |
2359 | { | |
2360 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2361 | le_scan_disable.work); | |
2362 | u8 status; | |
7c1fbed2 JH |
2363 | |
2364 | BT_DBG("%s", hdev->name); | |
2365 | ||
f4a2cb4d JH |
2366 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2367 | return; | |
2368 | ||
7c1fbed2 JH |
2369 | cancel_delayed_work(&hdev->le_scan_restart); |
2370 | ||
f4a2cb4d JH |
2371 | hci_req_sync(hdev, le_scan_disable, 0, HCI_CMD_TIMEOUT, &status); |
2372 | if (status) { | |
2064ee33 MH |
2373 | bt_dev_err(hdev, "failed to disable LE scan: status 0x%02x", |
2374 | status); | |
f4a2cb4d JH |
2375 | return; |
2376 | } | |
2377 | ||
2378 | hdev->discovery.scan_start = 0; | |
2379 | ||
2380 | /* If we were running LE only scan, change discovery state. If | |
2381 | * we were running both LE and BR/EDR inquiry simultaneously, | |
2382 | * and BR/EDR inquiry is already finished, stop discovery, | |
2383 | * otherwise BR/EDR inquiry will stop discovery when finished. | |
2384 | * If we will resolve remote device name, do not change | |
2385 | * discovery state. | |
2386 | */ | |
2387 | ||
2388 | if (hdev->discovery.type == DISCOV_TYPE_LE) | |
2389 | goto discov_stopped; | |
2390 | ||
2391 | if (hdev->discovery.type != DISCOV_TYPE_INTERLEAVED) | |
7c1fbed2 JH |
2392 | return; |
2393 | ||
f4a2cb4d JH |
2394 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) { |
2395 | if (!test_bit(HCI_INQUIRY, &hdev->flags) && | |
2396 | hdev->discovery.state != DISCOVERY_RESOLVING) | |
2397 | goto discov_stopped; | |
2398 | ||
2399 | return; | |
2400 | } | |
2401 | ||
2402 | hci_req_sync(hdev, bredr_inquiry, DISCOV_INTERLEAVED_INQUIRY_LEN, | |
2403 | HCI_CMD_TIMEOUT, &status); | |
2404 | if (status) { | |
2064ee33 | 2405 | bt_dev_err(hdev, "inquiry failed: status 0x%02x", status); |
f4a2cb4d JH |
2406 | goto discov_stopped; |
2407 | } | |
2408 | ||
2409 | return; | |
2410 | ||
2411 | discov_stopped: | |
2412 | hci_dev_lock(hdev); | |
2413 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2414 | hci_dev_unlock(hdev); | |
7c1fbed2 JH |
2415 | } |
2416 | ||
3dfe5905 JH |
2417 | static int le_scan_restart(struct hci_request *req, unsigned long opt) |
2418 | { | |
2419 | struct hci_dev *hdev = req->hdev; | |
3dfe5905 JH |
2420 | |
2421 | /* If controller is not scanning we are done. */ | |
2422 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) | |
2423 | return 0; | |
2424 | ||
2425 | hci_req_add_le_scan_disable(req); | |
2426 | ||
a2344b9e JK |
2427 | if (use_ext_scan(hdev)) { |
2428 | struct hci_cp_le_set_ext_scan_enable ext_enable_cp; | |
2429 | ||
2430 | memset(&ext_enable_cp, 0, sizeof(ext_enable_cp)); | |
2431 | ext_enable_cp.enable = LE_SCAN_ENABLE; | |
2432 | ext_enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
2433 | ||
2434 | hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_ENABLE, | |
2435 | sizeof(ext_enable_cp), &ext_enable_cp); | |
2436 | } else { | |
2437 | struct hci_cp_le_set_scan_enable cp; | |
2438 | ||
2439 | memset(&cp, 0, sizeof(cp)); | |
2440 | cp.enable = LE_SCAN_ENABLE; | |
2441 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
2442 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2443 | } | |
3dfe5905 JH |
2444 | |
2445 | return 0; | |
2446 | } | |
2447 | ||
2448 | static void le_scan_restart_work(struct work_struct *work) | |
7c1fbed2 | 2449 | { |
3dfe5905 JH |
2450 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2451 | le_scan_restart.work); | |
7c1fbed2 | 2452 | unsigned long timeout, duration, scan_start, now; |
3dfe5905 | 2453 | u8 status; |
7c1fbed2 JH |
2454 | |
2455 | BT_DBG("%s", hdev->name); | |
2456 | ||
3dfe5905 | 2457 | hci_req_sync(hdev, le_scan_restart, 0, HCI_CMD_TIMEOUT, &status); |
7c1fbed2 | 2458 | if (status) { |
2064ee33 MH |
2459 | bt_dev_err(hdev, "failed to restart LE scan: status %d", |
2460 | status); | |
7c1fbed2 JH |
2461 | return; |
2462 | } | |
2463 | ||
2464 | hci_dev_lock(hdev); | |
2465 | ||
2466 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
2467 | !hdev->discovery.scan_start) | |
2468 | goto unlock; | |
2469 | ||
2470 | /* When the scan was started, hdev->le_scan_disable has been queued | |
2471 | * after duration from scan_start. During scan restart this job | |
2472 | * has been canceled, and we need to queue it again after proper | |
2473 | * timeout, to make sure that scan does not run indefinitely. | |
2474 | */ | |
2475 | duration = hdev->discovery.scan_duration; | |
2476 | scan_start = hdev->discovery.scan_start; | |
2477 | now = jiffies; | |
2478 | if (now - scan_start <= duration) { | |
2479 | int elapsed; | |
2480 | ||
2481 | if (now >= scan_start) | |
2482 | elapsed = now - scan_start; | |
2483 | else | |
2484 | elapsed = ULONG_MAX - scan_start + now; | |
2485 | ||
2486 | timeout = duration - elapsed; | |
2487 | } else { | |
2488 | timeout = 0; | |
2489 | } | |
2490 | ||
2491 | queue_delayed_work(hdev->req_workqueue, | |
2492 | &hdev->le_scan_disable, timeout); | |
2493 | ||
2494 | unlock: | |
2495 | hci_dev_unlock(hdev); | |
2496 | } | |
2497 | ||
e68f072b JH |
2498 | static int active_scan(struct hci_request *req, unsigned long opt) |
2499 | { | |
2500 | uint16_t interval = opt; | |
2501 | struct hci_dev *hdev = req->hdev; | |
e68f072b JH |
2502 | u8 own_addr_type; |
2503 | int err; | |
2504 | ||
2505 | BT_DBG("%s", hdev->name); | |
2506 | ||
2507 | if (hci_dev_test_flag(hdev, HCI_LE_ADV)) { | |
2508 | hci_dev_lock(hdev); | |
2509 | ||
2510 | /* Don't let discovery abort an outgoing connection attempt | |
2511 | * that's using directed advertising. | |
2512 | */ | |
2513 | if (hci_lookup_le_connect(hdev)) { | |
2514 | hci_dev_unlock(hdev); | |
2515 | return -EBUSY; | |
2516 | } | |
2517 | ||
2518 | cancel_adv_timeout(hdev); | |
2519 | hci_dev_unlock(hdev); | |
2520 | ||
94386b6a | 2521 | __hci_req_disable_advertising(req); |
e68f072b JH |
2522 | } |
2523 | ||
2524 | /* If controller is scanning, it means the background scanning is | |
2525 | * running. Thus, we should temporarily stop it in order to set the | |
2526 | * discovery scanning parameters. | |
2527 | */ | |
2528 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) | |
2529 | hci_req_add_le_scan_disable(req); | |
2530 | ||
2531 | /* All active scans will be done with either a resolvable private | |
2532 | * address (when privacy feature has been enabled) or non-resolvable | |
2533 | * private address. | |
2534 | */ | |
82a37ade JH |
2535 | err = hci_update_random_address(req, true, scan_use_rpa(hdev), |
2536 | &own_addr_type); | |
e68f072b JH |
2537 | if (err < 0) |
2538 | own_addr_type = ADDR_LE_DEV_PUBLIC; | |
2539 | ||
3baef810 JK |
2540 | hci_req_start_scan(req, LE_SCAN_ACTIVE, interval, DISCOV_LE_SCAN_WIN, |
2541 | own_addr_type, 0); | |
e68f072b JH |
2542 | return 0; |
2543 | } | |
2544 | ||
2545 | static int interleaved_discov(struct hci_request *req, unsigned long opt) | |
2546 | { | |
2547 | int err; | |
2548 | ||
2549 | BT_DBG("%s", req->hdev->name); | |
2550 | ||
2551 | err = active_scan(req, opt); | |
2552 | if (err) | |
2553 | return err; | |
2554 | ||
7df26b56 | 2555 | return bredr_inquiry(req, DISCOV_BREDR_INQUIRY_LEN); |
e68f072b JH |
2556 | } |
2557 | ||
2558 | static void start_discovery(struct hci_dev *hdev, u8 *status) | |
2559 | { | |
2560 | unsigned long timeout; | |
2561 | ||
2562 | BT_DBG("%s type %u", hdev->name, hdev->discovery.type); | |
2563 | ||
2564 | switch (hdev->discovery.type) { | |
2565 | case DISCOV_TYPE_BREDR: | |
2566 | if (!hci_dev_test_flag(hdev, HCI_INQUIRY)) | |
7df26b56 JH |
2567 | hci_req_sync(hdev, bredr_inquiry, |
2568 | DISCOV_BREDR_INQUIRY_LEN, HCI_CMD_TIMEOUT, | |
e68f072b JH |
2569 | status); |
2570 | return; | |
2571 | case DISCOV_TYPE_INTERLEAVED: | |
2572 | /* When running simultaneous discovery, the LE scanning time | |
2573 | * should occupy the whole discovery time sine BR/EDR inquiry | |
2574 | * and LE scanning are scheduled by the controller. | |
2575 | * | |
2576 | * For interleaving discovery in comparison, BR/EDR inquiry | |
2577 | * and LE scanning are done sequentially with separate | |
2578 | * timeouts. | |
2579 | */ | |
2580 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, | |
2581 | &hdev->quirks)) { | |
2582 | timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); | |
2583 | /* During simultaneous discovery, we double LE scan | |
2584 | * interval. We must leave some time for the controller | |
2585 | * to do BR/EDR inquiry. | |
2586 | */ | |
2587 | hci_req_sync(hdev, interleaved_discov, | |
2588 | DISCOV_LE_SCAN_INT * 2, HCI_CMD_TIMEOUT, | |
2589 | status); | |
2590 | break; | |
2591 | } | |
2592 | ||
2593 | timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout); | |
2594 | hci_req_sync(hdev, active_scan, DISCOV_LE_SCAN_INT, | |
2595 | HCI_CMD_TIMEOUT, status); | |
2596 | break; | |
2597 | case DISCOV_TYPE_LE: | |
2598 | timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); | |
2599 | hci_req_sync(hdev, active_scan, DISCOV_LE_SCAN_INT, | |
2600 | HCI_CMD_TIMEOUT, status); | |
2601 | break; | |
2602 | default: | |
2603 | *status = HCI_ERROR_UNSPECIFIED; | |
2604 | return; | |
2605 | } | |
2606 | ||
2607 | if (*status) | |
2608 | return; | |
2609 | ||
2610 | BT_DBG("%s timeout %u ms", hdev->name, jiffies_to_msecs(timeout)); | |
2611 | ||
2612 | /* When service discovery is used and the controller has a | |
2613 | * strict duplicate filter, it is important to remember the | |
2614 | * start and duration of the scan. This is required for | |
2615 | * restarting scanning during the discovery phase. | |
2616 | */ | |
2617 | if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) && | |
2618 | hdev->discovery.result_filtering) { | |
2619 | hdev->discovery.scan_start = jiffies; | |
2620 | hdev->discovery.scan_duration = timeout; | |
2621 | } | |
2622 | ||
2623 | queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable, | |
2624 | timeout); | |
2625 | } | |
2626 | ||
2154d3f4 JH |
2627 | bool hci_req_stop_discovery(struct hci_request *req) |
2628 | { | |
2629 | struct hci_dev *hdev = req->hdev; | |
2630 | struct discovery_state *d = &hdev->discovery; | |
2631 | struct hci_cp_remote_name_req_cancel cp; | |
2632 | struct inquiry_entry *e; | |
2633 | bool ret = false; | |
2634 | ||
2635 | BT_DBG("%s state %u", hdev->name, hdev->discovery.state); | |
2636 | ||
2637 | if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) { | |
2638 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2639 | hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2640 | ||
2641 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { | |
2642 | cancel_delayed_work(&hdev->le_scan_disable); | |
2643 | hci_req_add_le_scan_disable(req); | |
2644 | } | |
2645 | ||
2646 | ret = true; | |
2647 | } else { | |
2648 | /* Passive scanning */ | |
2649 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { | |
2650 | hci_req_add_le_scan_disable(req); | |
2651 | ret = true; | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | /* No further actions needed for LE-only discovery */ | |
2656 | if (d->type == DISCOV_TYPE_LE) | |
2657 | return ret; | |
2658 | ||
2659 | if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) { | |
2660 | e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, | |
2661 | NAME_PENDING); | |
2662 | if (!e) | |
2663 | return ret; | |
2664 | ||
2665 | bacpy(&cp.bdaddr, &e->data.bdaddr); | |
2666 | hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp), | |
2667 | &cp); | |
2668 | ret = true; | |
2669 | } | |
2670 | ||
2671 | return ret; | |
2672 | } | |
2673 | ||
2674 | static int stop_discovery(struct hci_request *req, unsigned long opt) | |
2675 | { | |
2676 | hci_dev_lock(req->hdev); | |
2677 | hci_req_stop_discovery(req); | |
2678 | hci_dev_unlock(req->hdev); | |
2679 | ||
2680 | return 0; | |
2681 | } | |
2682 | ||
e68f072b JH |
2683 | static void discov_update(struct work_struct *work) |
2684 | { | |
2685 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2686 | discov_update); | |
2687 | u8 status = 0; | |
2688 | ||
2689 | switch (hdev->discovery.state) { | |
2690 | case DISCOVERY_STARTING: | |
2691 | start_discovery(hdev, &status); | |
2692 | mgmt_start_discovery_complete(hdev, status); | |
2693 | if (status) | |
2694 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2695 | else | |
2696 | hci_discovery_set_state(hdev, DISCOVERY_FINDING); | |
2697 | break; | |
2154d3f4 JH |
2698 | case DISCOVERY_STOPPING: |
2699 | hci_req_sync(hdev, stop_discovery, 0, HCI_CMD_TIMEOUT, &status); | |
2700 | mgmt_stop_discovery_complete(hdev, status); | |
2701 | if (!status) | |
2702 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2703 | break; | |
e68f072b JH |
2704 | case DISCOVERY_STOPPED: |
2705 | default: | |
2706 | return; | |
2707 | } | |
2708 | } | |
2709 | ||
c366f555 JH |
2710 | static void discov_off(struct work_struct *work) |
2711 | { | |
2712 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2713 | discov_off.work); | |
2714 | ||
2715 | BT_DBG("%s", hdev->name); | |
2716 | ||
2717 | hci_dev_lock(hdev); | |
2718 | ||
2719 | /* When discoverable timeout triggers, then just make sure | |
2720 | * the limited discoverable flag is cleared. Even in the case | |
2721 | * of a timeout triggered from general discoverable, it is | |
2722 | * safe to unconditionally clear the flag. | |
2723 | */ | |
2724 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
2725 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); | |
2726 | hdev->discov_timeout = 0; | |
2727 | ||
2728 | hci_dev_unlock(hdev); | |
2729 | ||
2730 | hci_req_sync(hdev, discoverable_update, 0, HCI_CMD_TIMEOUT, NULL); | |
2731 | mgmt_new_settings(hdev); | |
2732 | } | |
2733 | ||
2ff13894 JH |
2734 | static int powered_update_hci(struct hci_request *req, unsigned long opt) |
2735 | { | |
2736 | struct hci_dev *hdev = req->hdev; | |
2ff13894 JH |
2737 | u8 link_sec; |
2738 | ||
2739 | hci_dev_lock(hdev); | |
2740 | ||
2741 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && | |
2742 | !lmp_host_ssp_capable(hdev)) { | |
2743 | u8 mode = 0x01; | |
2744 | ||
2745 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode); | |
2746 | ||
2747 | if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) { | |
2748 | u8 support = 0x01; | |
2749 | ||
2750 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
2751 | sizeof(support), &support); | |
2752 | } | |
2753 | } | |
2754 | ||
2755 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && | |
2756 | lmp_bredr_capable(hdev)) { | |
2757 | struct hci_cp_write_le_host_supported cp; | |
2758 | ||
2759 | cp.le = 0x01; | |
2760 | cp.simul = 0x00; | |
2761 | ||
2762 | /* Check first if we already have the right | |
2763 | * host state (host features set) | |
2764 | */ | |
2765 | if (cp.le != lmp_host_le_capable(hdev) || | |
2766 | cp.simul != lmp_host_le_br_capable(hdev)) | |
2767 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, | |
2768 | sizeof(cp), &cp); | |
2769 | } | |
2770 | ||
d6b7e2cd | 2771 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2ff13894 JH |
2772 | /* Make sure the controller has a good default for |
2773 | * advertising data. This also applies to the case | |
2774 | * where BR/EDR was toggled during the AUTO_OFF phase. | |
2775 | */ | |
d6b7e2cd JH |
2776 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || |
2777 | list_empty(&hdev->adv_instances)) { | |
a0fb3726 JK |
2778 | int err; |
2779 | ||
2780 | if (ext_adv_capable(hdev)) { | |
2781 | err = __hci_req_setup_ext_adv_instance(req, | |
2782 | 0x00); | |
2783 | if (!err) | |
2784 | __hci_req_update_scan_rsp_data(req, | |
2785 | 0x00); | |
2786 | } else { | |
2787 | err = 0; | |
2788 | __hci_req_update_adv_data(req, 0x00); | |
2789 | __hci_req_update_scan_rsp_data(req, 0x00); | |
2790 | } | |
d6b7e2cd | 2791 | |
de181e88 | 2792 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) { |
a0fb3726 | 2793 | if (!ext_adv_capable(hdev)) |
de181e88 | 2794 | __hci_req_enable_advertising(req); |
a0fb3726 | 2795 | else if (!err) |
1d0fac2c LAD |
2796 | __hci_req_enable_ext_advertising(req, |
2797 | 0x00); | |
de181e88 | 2798 | } |
d6b7e2cd JH |
2799 | } else if (!list_empty(&hdev->adv_instances)) { |
2800 | struct adv_info *adv_instance; | |
2ff13894 | 2801 | |
2ff13894 JH |
2802 | adv_instance = list_first_entry(&hdev->adv_instances, |
2803 | struct adv_info, list); | |
2ff13894 | 2804 | __hci_req_schedule_adv_instance(req, |
d6b7e2cd | 2805 | adv_instance->instance, |
2ff13894 | 2806 | true); |
d6b7e2cd | 2807 | } |
2ff13894 JH |
2808 | } |
2809 | ||
2810 | link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY); | |
2811 | if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) | |
2812 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, | |
2813 | sizeof(link_sec), &link_sec); | |
2814 | ||
2815 | if (lmp_bredr_capable(hdev)) { | |
2816 | if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) | |
2817 | __hci_req_write_fast_connectable(req, true); | |
2818 | else | |
2819 | __hci_req_write_fast_connectable(req, false); | |
2820 | __hci_req_update_scan(req); | |
2821 | __hci_req_update_class(req); | |
2822 | __hci_req_update_name(req); | |
2823 | __hci_req_update_eir(req); | |
2824 | } | |
2825 | ||
2826 | hci_dev_unlock(hdev); | |
2827 | return 0; | |
2828 | } | |
2829 | ||
2830 | int __hci_req_hci_power_on(struct hci_dev *hdev) | |
2831 | { | |
2832 | /* Register the available SMP channels (BR/EDR and LE) only when | |
2833 | * successfully powering on the controller. This late | |
2834 | * registration is required so that LE SMP can clearly decide if | |
2835 | * the public address or static address is used. | |
2836 | */ | |
2837 | smp_register(hdev); | |
2838 | ||
2839 | return __hci_req_sync(hdev, powered_update_hci, 0, HCI_CMD_TIMEOUT, | |
2840 | NULL); | |
2841 | } | |
2842 | ||
5fc16cc4 JH |
2843 | void hci_request_setup(struct hci_dev *hdev) |
2844 | { | |
e68f072b | 2845 | INIT_WORK(&hdev->discov_update, discov_update); |
2e93e53b | 2846 | INIT_WORK(&hdev->bg_scan_update, bg_scan_update); |
01b1cb87 | 2847 | INIT_WORK(&hdev->scan_update, scan_update_work); |
53c0ba74 | 2848 | INIT_WORK(&hdev->connectable_update, connectable_update_work); |
aed1a885 | 2849 | INIT_WORK(&hdev->discoverable_update, discoverable_update_work); |
c366f555 | 2850 | INIT_DELAYED_WORK(&hdev->discov_off, discov_off); |
7c1fbed2 JH |
2851 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); |
2852 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); | |
f2252570 | 2853 | INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire); |
5fc16cc4 JH |
2854 | } |
2855 | ||
2856 | void hci_request_cancel_all(struct hci_dev *hdev) | |
2857 | { | |
7df0f73e JH |
2858 | hci_req_sync_cancel(hdev, ENODEV); |
2859 | ||
e68f072b | 2860 | cancel_work_sync(&hdev->discov_update); |
2e93e53b | 2861 | cancel_work_sync(&hdev->bg_scan_update); |
01b1cb87 | 2862 | cancel_work_sync(&hdev->scan_update); |
53c0ba74 | 2863 | cancel_work_sync(&hdev->connectable_update); |
aed1a885 | 2864 | cancel_work_sync(&hdev->discoverable_update); |
c366f555 | 2865 | cancel_delayed_work_sync(&hdev->discov_off); |
7c1fbed2 JH |
2866 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2867 | cancel_delayed_work_sync(&hdev->le_scan_restart); | |
f2252570 JH |
2868 | |
2869 | if (hdev->adv_instance_timeout) { | |
2870 | cancel_delayed_work_sync(&hdev->adv_instance_expire); | |
2871 | hdev->adv_instance_timeout = 0; | |
2872 | } | |
5fc16cc4 | 2873 | } |