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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
8c520a59 | 29 | #include <linux/rfkill.h> |
baf27f6e | 30 | #include <linux/debugfs.h> |
99780a7b | 31 | #include <linux/crypto.h> |
9f30de9e | 32 | #include <linux/kcov.h> |
7a0e5b15 | 33 | #include <linux/property.h> |
9952d90e APS |
34 | #include <linux/suspend.h> |
35 | #include <linux/wait.h> | |
47219839 | 36 | #include <asm/unaligned.h> |
1da177e4 LT |
37 | |
38 | #include <net/bluetooth/bluetooth.h> | |
39 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 40 | #include <net/bluetooth/l2cap.h> |
af58925c | 41 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 42 | |
0857dd3b | 43 | #include "hci_request.h" |
60c5f5fb | 44 | #include "hci_debugfs.h" |
970c4e46 | 45 | #include "smp.h" |
6d5d2ee6 | 46 | #include "leds.h" |
145373cb | 47 | #include "msft.h" |
f67743f9 | 48 | #include "aosp.h" |
8961987f | 49 | #include "hci_codec.h" |
970c4e46 | 50 | |
b78752cc | 51 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 52 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 53 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 54 | |
1da177e4 LT |
55 | /* HCI device list */ |
56 | LIST_HEAD(hci_dev_list); | |
57 | DEFINE_RWLOCK(hci_dev_list_lock); | |
58 | ||
59 | /* HCI callback list */ | |
60 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 61 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 62 | |
3df92b31 SL |
63 | /* HCI ID Numbering */ |
64 | static DEFINE_IDA(hci_index_ida); | |
65 | ||
a1d01db1 | 66 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
67 | { |
68 | __u8 scan = opt; | |
69 | ||
42c6b129 | 70 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
71 | |
72 | /* Inquiry and Page scans */ | |
42c6b129 | 73 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 74 | return 0; |
1da177e4 LT |
75 | } |
76 | ||
a1d01db1 | 77 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
78 | { |
79 | __u8 auth = opt; | |
80 | ||
42c6b129 | 81 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
82 | |
83 | /* Authentication */ | |
42c6b129 | 84 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 85 | return 0; |
1da177e4 LT |
86 | } |
87 | ||
a1d01db1 | 88 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
89 | { |
90 | __u8 encrypt = opt; | |
91 | ||
42c6b129 | 92 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 93 | |
e4e8e37c | 94 | /* Encryption */ |
42c6b129 | 95 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 96 | return 0; |
1da177e4 LT |
97 | } |
98 | ||
a1d01db1 | 99 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
100 | { |
101 | __le16 policy = cpu_to_le16(opt); | |
102 | ||
42c6b129 | 103 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
104 | |
105 | /* Default link policy */ | |
42c6b129 | 106 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 107 | return 0; |
e4e8e37c MH |
108 | } |
109 | ||
8e87d142 | 110 | /* Get HCI device by index. |
1da177e4 LT |
111 | * Device is held on return. */ |
112 | struct hci_dev *hci_dev_get(int index) | |
113 | { | |
8035ded4 | 114 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
115 | |
116 | BT_DBG("%d", index); | |
117 | ||
118 | if (index < 0) | |
119 | return NULL; | |
120 | ||
121 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 122 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
123 | if (d->id == index) { |
124 | hdev = hci_dev_hold(d); | |
125 | break; | |
126 | } | |
127 | } | |
128 | read_unlock(&hci_dev_list_lock); | |
129 | return hdev; | |
130 | } | |
1da177e4 LT |
131 | |
132 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 133 | |
30dc78e1 JH |
134 | bool hci_discovery_active(struct hci_dev *hdev) |
135 | { | |
136 | struct discovery_state *discov = &hdev->discovery; | |
137 | ||
6fbe195d | 138 | switch (discov->state) { |
343f935b | 139 | case DISCOVERY_FINDING: |
6fbe195d | 140 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
141 | return true; |
142 | ||
6fbe195d AG |
143 | default: |
144 | return false; | |
145 | } | |
30dc78e1 JH |
146 | } |
147 | ||
ff9ef578 JH |
148 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
149 | { | |
bb3e0a33 JH |
150 | int old_state = hdev->discovery.state; |
151 | ||
bb3e0a33 | 152 | if (old_state == state) |
ff9ef578 JH |
153 | return; |
154 | ||
bb3e0a33 JH |
155 | hdev->discovery.state = state; |
156 | ||
ff9ef578 JH |
157 | switch (state) { |
158 | case DISCOVERY_STOPPED: | |
5bee2fd6 | 159 | hci_update_passive_scan(hdev); |
c54c3860 | 160 | |
bb3e0a33 | 161 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 162 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
163 | break; |
164 | case DISCOVERY_STARTING: | |
165 | break; | |
343f935b | 166 | case DISCOVERY_FINDING: |
2e2515c1 LAD |
167 | /* If discovery was not started then it was initiated by the |
168 | * MGMT interface so no MGMT event shall be generated either | |
169 | */ | |
170 | if (old_state != DISCOVERY_STARTING) { | |
171 | hdev->discovery.state = old_state; | |
172 | return; | |
173 | } | |
ff9ef578 JH |
174 | mgmt_discovering(hdev, 1); |
175 | break; | |
30dc78e1 JH |
176 | case DISCOVERY_RESOLVING: |
177 | break; | |
ff9ef578 JH |
178 | case DISCOVERY_STOPPING: |
179 | break; | |
180 | } | |
2e2515c1 LAD |
181 | |
182 | bt_dev_dbg(hdev, "state %u -> %u", old_state, state); | |
ff9ef578 JH |
183 | } |
184 | ||
1f9b9a5d | 185 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 186 | { |
30883512 | 187 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 188 | struct inquiry_entry *p, *n; |
1da177e4 | 189 | |
561aafbc JH |
190 | list_for_each_entry_safe(p, n, &cache->all, all) { |
191 | list_del(&p->all); | |
b57c1a56 | 192 | kfree(p); |
1da177e4 | 193 | } |
561aafbc JH |
194 | |
195 | INIT_LIST_HEAD(&cache->unknown); | |
196 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
197 | } |
198 | ||
a8c5fb1a GP |
199 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
200 | bdaddr_t *bdaddr) | |
1da177e4 | 201 | { |
30883512 | 202 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
203 | struct inquiry_entry *e; |
204 | ||
6ed93dc6 | 205 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 206 | |
561aafbc JH |
207 | list_for_each_entry(e, &cache->all, all) { |
208 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
209 | return e; | |
210 | } | |
211 | ||
212 | return NULL; | |
213 | } | |
214 | ||
215 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 216 | bdaddr_t *bdaddr) |
561aafbc | 217 | { |
30883512 | 218 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
219 | struct inquiry_entry *e; |
220 | ||
6ed93dc6 | 221 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
222 | |
223 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 224 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
225 | return e; |
226 | } | |
227 | ||
228 | return NULL; | |
1da177e4 LT |
229 | } |
230 | ||
30dc78e1 | 231 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
232 | bdaddr_t *bdaddr, |
233 | int state) | |
30dc78e1 JH |
234 | { |
235 | struct discovery_state *cache = &hdev->discovery; | |
236 | struct inquiry_entry *e; | |
237 | ||
6ed93dc6 | 238 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
239 | |
240 | list_for_each_entry(e, &cache->resolve, list) { | |
241 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
242 | return e; | |
243 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
244 | return e; | |
245 | } | |
246 | ||
247 | return NULL; | |
248 | } | |
249 | ||
a3d4e20a | 250 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 251 | struct inquiry_entry *ie) |
a3d4e20a JH |
252 | { |
253 | struct discovery_state *cache = &hdev->discovery; | |
254 | struct list_head *pos = &cache->resolve; | |
255 | struct inquiry_entry *p; | |
256 | ||
257 | list_del(&ie->list); | |
258 | ||
259 | list_for_each_entry(p, &cache->resolve, list) { | |
260 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 261 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
262 | break; |
263 | pos = &p->list; | |
264 | } | |
265 | ||
266 | list_add(&ie->list, pos); | |
267 | } | |
268 | ||
af58925c MH |
269 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
270 | bool name_known) | |
1da177e4 | 271 | { |
30883512 | 272 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 273 | struct inquiry_entry *ie; |
af58925c | 274 | u32 flags = 0; |
1da177e4 | 275 | |
6ed93dc6 | 276 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 277 | |
6928a924 | 278 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 279 | |
af58925c MH |
280 | if (!data->ssp_mode) |
281 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 282 | |
70f23020 | 283 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 284 | if (ie) { |
af58925c MH |
285 | if (!ie->data.ssp_mode) |
286 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 287 | |
a3d4e20a | 288 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 289 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
290 | ie->data.rssi = data->rssi; |
291 | hci_inquiry_cache_update_resolve(hdev, ie); | |
292 | } | |
293 | ||
561aafbc | 294 | goto update; |
a3d4e20a | 295 | } |
561aafbc JH |
296 | |
297 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 298 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
299 | if (!ie) { |
300 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
301 | goto done; | |
302 | } | |
561aafbc JH |
303 | |
304 | list_add(&ie->all, &cache->all); | |
305 | ||
306 | if (name_known) { | |
307 | ie->name_state = NAME_KNOWN; | |
308 | } else { | |
309 | ie->name_state = NAME_NOT_KNOWN; | |
310 | list_add(&ie->list, &cache->unknown); | |
311 | } | |
70f23020 | 312 | |
561aafbc JH |
313 | update: |
314 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 315 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
316 | ie->name_state = NAME_KNOWN; |
317 | list_del(&ie->list); | |
1da177e4 LT |
318 | } |
319 | ||
70f23020 AE |
320 | memcpy(&ie->data, data, sizeof(*data)); |
321 | ie->timestamp = jiffies; | |
1da177e4 | 322 | cache->timestamp = jiffies; |
3175405b JH |
323 | |
324 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 325 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 326 | |
af58925c MH |
327 | done: |
328 | return flags; | |
1da177e4 LT |
329 | } |
330 | ||
331 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
332 | { | |
30883512 | 333 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
334 | struct inquiry_info *info = (struct inquiry_info *) buf; |
335 | struct inquiry_entry *e; | |
336 | int copied = 0; | |
337 | ||
561aafbc | 338 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 339 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
340 | |
341 | if (copied >= num) | |
342 | break; | |
343 | ||
1da177e4 LT |
344 | bacpy(&info->bdaddr, &data->bdaddr); |
345 | info->pscan_rep_mode = data->pscan_rep_mode; | |
346 | info->pscan_period_mode = data->pscan_period_mode; | |
347 | info->pscan_mode = data->pscan_mode; | |
348 | memcpy(info->dev_class, data->dev_class, 3); | |
349 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 350 | |
1da177e4 | 351 | info++; |
b57c1a56 | 352 | copied++; |
1da177e4 LT |
353 | } |
354 | ||
355 | BT_DBG("cache %p, copied %d", cache, copied); | |
356 | return copied; | |
357 | } | |
358 | ||
a1d01db1 | 359 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
360 | { |
361 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 362 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
363 | struct hci_cp_inquiry cp; |
364 | ||
365 | BT_DBG("%s", hdev->name); | |
366 | ||
367 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 368 | return 0; |
1da177e4 LT |
369 | |
370 | /* Start Inquiry */ | |
371 | memcpy(&cp.lap, &ir->lap, 3); | |
372 | cp.length = ir->length; | |
373 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 374 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
375 | |
376 | return 0; | |
1da177e4 LT |
377 | } |
378 | ||
379 | int hci_inquiry(void __user *arg) | |
380 | { | |
381 | __u8 __user *ptr = arg; | |
382 | struct hci_inquiry_req ir; | |
383 | struct hci_dev *hdev; | |
384 | int err = 0, do_inquiry = 0, max_rsp; | |
385 | long timeo; | |
386 | __u8 *buf; | |
387 | ||
388 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
389 | return -EFAULT; | |
390 | ||
5a08ecce AE |
391 | hdev = hci_dev_get(ir.dev_id); |
392 | if (!hdev) | |
1da177e4 LT |
393 | return -ENODEV; |
394 | ||
d7a5a11d | 395 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
396 | err = -EBUSY; |
397 | goto done; | |
398 | } | |
399 | ||
d7a5a11d | 400 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
401 | err = -EOPNOTSUPP; |
402 | goto done; | |
403 | } | |
404 | ||
ca8bee5d | 405 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
406 | err = -EOPNOTSUPP; |
407 | goto done; | |
408 | } | |
409 | ||
d7a5a11d | 410 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
411 | err = -EOPNOTSUPP; |
412 | goto done; | |
413 | } | |
414 | ||
f41a4b2b PS |
415 | /* Restrict maximum inquiry length to 60 seconds */ |
416 | if (ir.length > 60) { | |
417 | err = -EINVAL; | |
418 | goto done; | |
419 | } | |
420 | ||
09fd0de5 | 421 | hci_dev_lock(hdev); |
8e87d142 | 422 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 423 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 424 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
425 | do_inquiry = 1; |
426 | } | |
09fd0de5 | 427 | hci_dev_unlock(hdev); |
1da177e4 | 428 | |
04837f64 | 429 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
430 | |
431 | if (do_inquiry) { | |
01178cd4 | 432 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 433 | timeo, NULL); |
70f23020 AE |
434 | if (err < 0) |
435 | goto done; | |
3e13fa1e AG |
436 | |
437 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
438 | * cleared). If it is interrupted by a signal, return -EINTR. | |
439 | */ | |
74316201 | 440 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
28a758c8 PB |
441 | TASK_INTERRUPTIBLE)) { |
442 | err = -EINTR; | |
443 | goto done; | |
444 | } | |
70f23020 | 445 | } |
1da177e4 | 446 | |
8fc9ced3 GP |
447 | /* for unlimited number of responses we will use buffer with |
448 | * 255 entries | |
449 | */ | |
1da177e4 LT |
450 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
451 | ||
452 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
453 | * copy it to the user space. | |
454 | */ | |
6da2ec56 | 455 | buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL); |
70f23020 | 456 | if (!buf) { |
1da177e4 LT |
457 | err = -ENOMEM; |
458 | goto done; | |
459 | } | |
460 | ||
09fd0de5 | 461 | hci_dev_lock(hdev); |
1da177e4 | 462 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 463 | hci_dev_unlock(hdev); |
1da177e4 LT |
464 | |
465 | BT_DBG("num_rsp %d", ir.num_rsp); | |
466 | ||
467 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
468 | ptr += sizeof(ir); | |
469 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 470 | ir.num_rsp)) |
1da177e4 | 471 | err = -EFAULT; |
8e87d142 | 472 | } else |
1da177e4 LT |
473 | err = -EFAULT; |
474 | ||
475 | kfree(buf); | |
476 | ||
477 | done: | |
478 | hci_dev_put(hdev); | |
479 | return err; | |
480 | } | |
481 | ||
cf75ad8b LAD |
482 | static int hci_dev_do_open(struct hci_dev *hdev) |
483 | { | |
484 | int ret = 0; | |
485 | ||
486 | BT_DBG("%s %p", hdev->name, hdev); | |
487 | ||
488 | hci_req_sync_lock(hdev); | |
489 | ||
490 | ret = hci_dev_open_sync(hdev); | |
491 | ||
b504430c | 492 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
493 | return ret; |
494 | } | |
495 | ||
cbed0ca1 JH |
496 | /* ---- HCI ioctl helpers ---- */ |
497 | ||
498 | int hci_dev_open(__u16 dev) | |
499 | { | |
500 | struct hci_dev *hdev; | |
501 | int err; | |
502 | ||
503 | hdev = hci_dev_get(dev); | |
504 | if (!hdev) | |
505 | return -ENODEV; | |
506 | ||
4a964404 | 507 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
508 | * up as user channel. Trying to bring them up as normal devices |
509 | * will result into a failure. Only user channel operation is | |
510 | * possible. | |
511 | * | |
512 | * When this function is called for a user channel, the flag | |
513 | * HCI_USER_CHANNEL will be set first before attempting to | |
514 | * open the device. | |
515 | */ | |
d7a5a11d MH |
516 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
517 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
518 | err = -EOPNOTSUPP; |
519 | goto done; | |
520 | } | |
521 | ||
e1d08f40 JH |
522 | /* We need to ensure that no other power on/off work is pending |
523 | * before proceeding to call hci_dev_do_open. This is | |
524 | * particularly important if the setup procedure has not yet | |
525 | * completed. | |
526 | */ | |
a69d8927 | 527 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
528 | cancel_delayed_work(&hdev->power_off); |
529 | ||
a5c8f270 MH |
530 | /* After this call it is guaranteed that the setup procedure |
531 | * has finished. This means that error conditions like RFKILL | |
532 | * or no valid public or static random address apply. | |
533 | */ | |
e1d08f40 JH |
534 | flush_workqueue(hdev->req_workqueue); |
535 | ||
12aa4f0a | 536 | /* For controllers not using the management interface and that |
b6ae8457 | 537 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
538 | * so that pairing works for them. Once the management interface |
539 | * is in use this bit will be cleared again and userspace has | |
540 | * to explicitly enable it. | |
541 | */ | |
d7a5a11d MH |
542 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
543 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 544 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 545 | |
cbed0ca1 JH |
546 | err = hci_dev_do_open(hdev); |
547 | ||
fee746b0 | 548 | done: |
cbed0ca1 | 549 | hci_dev_put(hdev); |
cbed0ca1 JH |
550 | return err; |
551 | } | |
552 | ||
cf75ad8b LAD |
553 | int hci_dev_do_close(struct hci_dev *hdev) |
554 | { | |
555 | int err; | |
556 | ||
557 | BT_DBG("%s %p", hdev->name, hdev); | |
558 | ||
559 | hci_req_sync_lock(hdev); | |
560 | ||
561 | err = hci_dev_close_sync(hdev); | |
562 | ||
b504430c | 563 | hci_req_sync_unlock(hdev); |
1da177e4 | 564 | |
61969ef8 | 565 | return err; |
1da177e4 LT |
566 | } |
567 | ||
568 | int hci_dev_close(__u16 dev) | |
569 | { | |
570 | struct hci_dev *hdev; | |
571 | int err; | |
572 | ||
70f23020 AE |
573 | hdev = hci_dev_get(dev); |
574 | if (!hdev) | |
1da177e4 | 575 | return -ENODEV; |
8ee56540 | 576 | |
d7a5a11d | 577 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
578 | err = -EBUSY; |
579 | goto done; | |
580 | } | |
581 | ||
e36bea6e | 582 | cancel_work_sync(&hdev->power_on); |
a69d8927 | 583 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
584 | cancel_delayed_work(&hdev->power_off); |
585 | ||
1da177e4 | 586 | err = hci_dev_do_close(hdev); |
8ee56540 | 587 | |
0736cfa8 | 588 | done: |
1da177e4 LT |
589 | hci_dev_put(hdev); |
590 | return err; | |
591 | } | |
592 | ||
5c912495 | 593 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 594 | { |
5c912495 | 595 | int ret; |
1da177e4 | 596 | |
5c912495 | 597 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 598 | |
b504430c | 599 | hci_req_sync_lock(hdev); |
1da177e4 | 600 | |
1da177e4 LT |
601 | /* Drop queues */ |
602 | skb_queue_purge(&hdev->rx_q); | |
603 | skb_queue_purge(&hdev->cmd_q); | |
604 | ||
877afada SS |
605 | /* Cancel these to avoid queueing non-chained pending work */ |
606 | hci_dev_set_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE); | |
deee93d1 TH |
607 | /* Wait for |
608 | * | |
609 | * if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) | |
610 | * queue_delayed_work(&hdev->{cmd,ncmd}_timer) | |
611 | * | |
612 | * inside RCU section to see the flag or complete scheduling. | |
613 | */ | |
614 | synchronize_rcu(); | |
615 | /* Explicitly cancel works in case scheduled after setting the flag. */ | |
877afada SS |
616 | cancel_delayed_work(&hdev->cmd_timer); |
617 | cancel_delayed_work(&hdev->ncmd_timer); | |
618 | ||
76727c02 JH |
619 | /* Avoid potential lockdep warnings from the *_flush() calls by |
620 | * ensuring the workqueue is empty up front. | |
621 | */ | |
622 | drain_workqueue(hdev->workqueue); | |
623 | ||
09fd0de5 | 624 | hci_dev_lock(hdev); |
1f9b9a5d | 625 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 626 | hci_conn_hash_flush(hdev); |
09fd0de5 | 627 | hci_dev_unlock(hdev); |
1da177e4 LT |
628 | |
629 | if (hdev->flush) | |
630 | hdev->flush(hdev); | |
631 | ||
877afada SS |
632 | hci_dev_clear_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE); |
633 | ||
8e87d142 | 634 | atomic_set(&hdev->cmd_cnt, 1); |
26afbd82 LAD |
635 | hdev->acl_cnt = 0; |
636 | hdev->sco_cnt = 0; | |
637 | hdev->le_cnt = 0; | |
638 | hdev->iso_cnt = 0; | |
1da177e4 | 639 | |
d0b13706 | 640 | ret = hci_reset_sync(hdev); |
1da177e4 | 641 | |
b504430c | 642 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
643 | return ret; |
644 | } | |
645 | ||
5c912495 MH |
646 | int hci_dev_reset(__u16 dev) |
647 | { | |
648 | struct hci_dev *hdev; | |
649 | int err; | |
650 | ||
651 | hdev = hci_dev_get(dev); | |
652 | if (!hdev) | |
653 | return -ENODEV; | |
654 | ||
655 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
656 | err = -ENETDOWN; | |
657 | goto done; | |
658 | } | |
659 | ||
d7a5a11d | 660 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
661 | err = -EBUSY; |
662 | goto done; | |
663 | } | |
664 | ||
d7a5a11d | 665 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
666 | err = -EOPNOTSUPP; |
667 | goto done; | |
668 | } | |
669 | ||
670 | err = hci_dev_do_reset(hdev); | |
671 | ||
672 | done: | |
673 | hci_dev_put(hdev); | |
674 | return err; | |
675 | } | |
676 | ||
1da177e4 LT |
677 | int hci_dev_reset_stat(__u16 dev) |
678 | { | |
679 | struct hci_dev *hdev; | |
680 | int ret = 0; | |
681 | ||
70f23020 AE |
682 | hdev = hci_dev_get(dev); |
683 | if (!hdev) | |
1da177e4 LT |
684 | return -ENODEV; |
685 | ||
d7a5a11d | 686 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
687 | ret = -EBUSY; |
688 | goto done; | |
689 | } | |
690 | ||
d7a5a11d | 691 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
692 | ret = -EOPNOTSUPP; |
693 | goto done; | |
694 | } | |
695 | ||
1da177e4 LT |
696 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
697 | ||
0736cfa8 | 698 | done: |
1da177e4 | 699 | hci_dev_put(hdev); |
1da177e4 LT |
700 | return ret; |
701 | } | |
702 | ||
5bee2fd6 | 703 | static void hci_update_passive_scan_state(struct hci_dev *hdev, u8 scan) |
123abc08 | 704 | { |
bc6d2d04 | 705 | bool conn_changed, discov_changed; |
123abc08 JH |
706 | |
707 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
708 | ||
709 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
710 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
711 | HCI_CONNECTABLE); | |
123abc08 | 712 | else |
a69d8927 MH |
713 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
714 | HCI_CONNECTABLE); | |
123abc08 | 715 | |
bc6d2d04 | 716 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
717 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
718 | HCI_DISCOVERABLE); | |
bc6d2d04 | 719 | } else { |
a358dc11 | 720 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
721 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
722 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
723 | } |
724 | ||
d7a5a11d | 725 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
726 | return; |
727 | ||
bc6d2d04 JH |
728 | if (conn_changed || discov_changed) { |
729 | /* In case this was disabled through mgmt */ | |
a1536da2 | 730 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 731 | |
d7a5a11d | 732 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
651cd3d6 | 733 | hci_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 734 | |
123abc08 | 735 | mgmt_new_settings(hdev); |
bc6d2d04 | 736 | } |
123abc08 JH |
737 | } |
738 | ||
1da177e4 LT |
739 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
740 | { | |
741 | struct hci_dev *hdev; | |
742 | struct hci_dev_req dr; | |
743 | int err = 0; | |
744 | ||
745 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
746 | return -EFAULT; | |
747 | ||
70f23020 AE |
748 | hdev = hci_dev_get(dr.dev_id); |
749 | if (!hdev) | |
1da177e4 LT |
750 | return -ENODEV; |
751 | ||
d7a5a11d | 752 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
753 | err = -EBUSY; |
754 | goto done; | |
755 | } | |
756 | ||
d7a5a11d | 757 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
758 | err = -EOPNOTSUPP; |
759 | goto done; | |
760 | } | |
761 | ||
ca8bee5d | 762 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
763 | err = -EOPNOTSUPP; |
764 | goto done; | |
765 | } | |
766 | ||
d7a5a11d | 767 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
768 | err = -EOPNOTSUPP; |
769 | goto done; | |
770 | } | |
771 | ||
1da177e4 LT |
772 | switch (cmd) { |
773 | case HCISETAUTH: | |
01178cd4 | 774 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 775 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
776 | break; |
777 | ||
778 | case HCISETENCRYPT: | |
779 | if (!lmp_encrypt_capable(hdev)) { | |
780 | err = -EOPNOTSUPP; | |
781 | break; | |
782 | } | |
783 | ||
784 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
785 | /* Auth must be enabled first */ | |
01178cd4 | 786 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 787 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
788 | if (err) |
789 | break; | |
790 | } | |
791 | ||
01178cd4 | 792 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 793 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
794 | break; |
795 | ||
796 | case HCISETSCAN: | |
01178cd4 | 797 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 798 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 799 | |
bc6d2d04 JH |
800 | /* Ensure that the connectable and discoverable states |
801 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 802 | */ |
123abc08 | 803 | if (!err) |
5bee2fd6 | 804 | hci_update_passive_scan_state(hdev, dr.dev_opt); |
1da177e4 LT |
805 | break; |
806 | ||
1da177e4 | 807 | case HCISETLINKPOL: |
01178cd4 | 808 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 809 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
810 | break; |
811 | ||
812 | case HCISETLINKMODE: | |
e4e8e37c MH |
813 | hdev->link_mode = ((__u16) dr.dev_opt) & |
814 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
815 | break; | |
816 | ||
817 | case HCISETPTYPE: | |
b7c23df8 JK |
818 | if (hdev->pkt_type == (__u16) dr.dev_opt) |
819 | break; | |
820 | ||
e4e8e37c | 821 | hdev->pkt_type = (__u16) dr.dev_opt; |
b7c23df8 | 822 | mgmt_phy_configuration_changed(hdev, NULL); |
1da177e4 LT |
823 | break; |
824 | ||
825 | case HCISETACLMTU: | |
e4e8e37c MH |
826 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
827 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
828 | break; |
829 | ||
830 | case HCISETSCOMTU: | |
e4e8e37c MH |
831 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
832 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
833 | break; |
834 | ||
835 | default: | |
836 | err = -EINVAL; | |
837 | break; | |
838 | } | |
e4e8e37c | 839 | |
0736cfa8 | 840 | done: |
1da177e4 LT |
841 | hci_dev_put(hdev); |
842 | return err; | |
843 | } | |
844 | ||
845 | int hci_get_dev_list(void __user *arg) | |
846 | { | |
8035ded4 | 847 | struct hci_dev *hdev; |
1da177e4 LT |
848 | struct hci_dev_list_req *dl; |
849 | struct hci_dev_req *dr; | |
1da177e4 LT |
850 | int n = 0, size, err; |
851 | __u16 dev_num; | |
852 | ||
853 | if (get_user(dev_num, (__u16 __user *) arg)) | |
854 | return -EFAULT; | |
855 | ||
856 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
857 | return -EINVAL; | |
858 | ||
859 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
860 | ||
70f23020 AE |
861 | dl = kzalloc(size, GFP_KERNEL); |
862 | if (!dl) | |
1da177e4 LT |
863 | return -ENOMEM; |
864 | ||
865 | dr = dl->dev_req; | |
866 | ||
f20d09d5 | 867 | read_lock(&hci_dev_list_lock); |
8035ded4 | 868 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 869 | unsigned long flags = hdev->flags; |
c542a06c | 870 | |
2e84d8db MH |
871 | /* When the auto-off is configured it means the transport |
872 | * is running, but in that case still indicate that the | |
873 | * device is actually down. | |
874 | */ | |
d7a5a11d | 875 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 876 | flags &= ~BIT(HCI_UP); |
c542a06c | 877 | |
1da177e4 | 878 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 879 | (dr + n)->dev_opt = flags; |
c542a06c | 880 | |
1da177e4 LT |
881 | if (++n >= dev_num) |
882 | break; | |
883 | } | |
f20d09d5 | 884 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
885 | |
886 | dl->dev_num = n; | |
887 | size = sizeof(*dl) + n * sizeof(*dr); | |
888 | ||
889 | err = copy_to_user(arg, dl, size); | |
890 | kfree(dl); | |
891 | ||
892 | return err ? -EFAULT : 0; | |
893 | } | |
894 | ||
895 | int hci_get_dev_info(void __user *arg) | |
896 | { | |
897 | struct hci_dev *hdev; | |
898 | struct hci_dev_info di; | |
2e84d8db | 899 | unsigned long flags; |
1da177e4 LT |
900 | int err = 0; |
901 | ||
902 | if (copy_from_user(&di, arg, sizeof(di))) | |
903 | return -EFAULT; | |
904 | ||
70f23020 AE |
905 | hdev = hci_dev_get(di.dev_id); |
906 | if (!hdev) | |
1da177e4 LT |
907 | return -ENODEV; |
908 | ||
2e84d8db MH |
909 | /* When the auto-off is configured it means the transport |
910 | * is running, but in that case still indicate that the | |
911 | * device is actually down. | |
912 | */ | |
d7a5a11d | 913 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
914 | flags = hdev->flags & ~BIT(HCI_UP); |
915 | else | |
916 | flags = hdev->flags; | |
c542a06c | 917 | |
81137162 | 918 | strscpy(di.name, hdev->name, sizeof(di.name)); |
1da177e4 | 919 | di.bdaddr = hdev->bdaddr; |
60f2a3ed | 920 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 921 | di.flags = flags; |
1da177e4 | 922 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
923 | if (lmp_bredr_capable(hdev)) { |
924 | di.acl_mtu = hdev->acl_mtu; | |
925 | di.acl_pkts = hdev->acl_pkts; | |
926 | di.sco_mtu = hdev->sco_mtu; | |
927 | di.sco_pkts = hdev->sco_pkts; | |
928 | } else { | |
929 | di.acl_mtu = hdev->le_mtu; | |
930 | di.acl_pkts = hdev->le_pkts; | |
931 | di.sco_mtu = 0; | |
932 | di.sco_pkts = 0; | |
933 | } | |
1da177e4 LT |
934 | di.link_policy = hdev->link_policy; |
935 | di.link_mode = hdev->link_mode; | |
936 | ||
937 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
938 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
939 | ||
940 | if (copy_to_user(arg, &di, sizeof(di))) | |
941 | err = -EFAULT; | |
942 | ||
943 | hci_dev_put(hdev); | |
944 | ||
945 | return err; | |
946 | } | |
947 | ||
948 | /* ---- Interface to HCI drivers ---- */ | |
949 | ||
d77433cd JD |
950 | static int hci_dev_do_poweroff(struct hci_dev *hdev) |
951 | { | |
952 | int err; | |
953 | ||
954 | BT_DBG("%s %p", hdev->name, hdev); | |
955 | ||
956 | hci_req_sync_lock(hdev); | |
957 | ||
958 | err = hci_set_powered_sync(hdev, false); | |
959 | ||
960 | hci_req_sync_unlock(hdev); | |
961 | ||
962 | return err; | |
963 | } | |
964 | ||
611b30f7 MH |
965 | static int hci_rfkill_set_block(void *data, bool blocked) |
966 | { | |
967 | struct hci_dev *hdev = data; | |
d77433cd | 968 | int err; |
611b30f7 MH |
969 | |
970 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
971 | ||
d7a5a11d | 972 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
973 | return -EBUSY; |
974 | ||
d77433cd JD |
975 | if (blocked == hci_dev_test_flag(hdev, HCI_RFKILLED)) |
976 | return 0; | |
977 | ||
5e130367 | 978 | if (blocked) { |
a1536da2 | 979 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d77433cd | 980 | |
d7a5a11d | 981 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
d77433cd JD |
982 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { |
983 | err = hci_dev_do_poweroff(hdev); | |
984 | if (err) { | |
985 | bt_dev_err(hdev, "Error when powering off device on rfkill (%d)", | |
986 | err); | |
987 | ||
988 | /* Make sure the device is still closed even if | |
989 | * anything during power off sequence (eg. | |
990 | * disconnecting devices) failed. | |
991 | */ | |
992 | hci_dev_do_close(hdev); | |
993 | } | |
994 | } | |
5e130367 | 995 | } else { |
a358dc11 | 996 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 997 | } |
611b30f7 MH |
998 | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | static const struct rfkill_ops hci_rfkill_ops = { | |
1003 | .set_block = hci_rfkill_set_block, | |
1004 | }; | |
1005 | ||
ab81cbf9 JH |
1006 | static void hci_power_on(struct work_struct *work) |
1007 | { | |
1008 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1009 | int err; |
ab81cbf9 JH |
1010 | |
1011 | BT_DBG("%s", hdev->name); | |
1012 | ||
2ff13894 JH |
1013 | if (test_bit(HCI_UP, &hdev->flags) && |
1014 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
1015 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 1016 | cancel_delayed_work(&hdev->power_off); |
cf75ad8b | 1017 | err = hci_powered_update_sync(hdev); |
2ff13894 JH |
1018 | mgmt_power_on(hdev, err); |
1019 | return; | |
1020 | } | |
1021 | ||
cbed0ca1 | 1022 | err = hci_dev_do_open(hdev); |
96570ffc | 1023 | if (err < 0) { |
3ad67582 | 1024 | hci_dev_lock(hdev); |
96570ffc | 1025 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 1026 | hci_dev_unlock(hdev); |
ab81cbf9 | 1027 | return; |
96570ffc | 1028 | } |
ab81cbf9 | 1029 | |
a5c8f270 MH |
1030 | /* During the HCI setup phase, a few error conditions are |
1031 | * ignored and they need to be checked now. If they are still | |
1032 | * valid, it is important to turn the device back off. | |
1033 | */ | |
d7a5a11d MH |
1034 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
1035 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
ca8bee5d | 1036 | (hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
1037 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1038 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 1039 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 1040 | hci_dev_do_close(hdev); |
d7a5a11d | 1041 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
1042 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1043 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 1044 | } |
ab81cbf9 | 1045 | |
a69d8927 | 1046 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
1047 | /* For unconfigured devices, set the HCI_RAW flag |
1048 | * so that userspace can easily identify them. | |
4a964404 | 1049 | */ |
d7a5a11d | 1050 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 1051 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
1052 | |
1053 | /* For fully configured devices, this will send | |
1054 | * the Index Added event. For unconfigured devices, | |
1055 | * it will send Unconfigued Index Added event. | |
1056 | * | |
1057 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
1058 | * and no event will be send. | |
1059 | */ | |
1060 | mgmt_index_added(hdev); | |
a69d8927 | 1061 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
1062 | /* When the controller is now configured, then it |
1063 | * is important to clear the HCI_RAW flag. | |
1064 | */ | |
d7a5a11d | 1065 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
1066 | clear_bit(HCI_RAW, &hdev->flags); |
1067 | ||
d603b76b MH |
1068 | /* Powering on the controller with HCI_CONFIG set only |
1069 | * happens with the transition from unconfigured to | |
1070 | * configured. This will send the Index Added event. | |
1071 | */ | |
744cf19e | 1072 | mgmt_index_added(hdev); |
fee746b0 | 1073 | } |
ab81cbf9 JH |
1074 | } |
1075 | ||
1076 | static void hci_power_off(struct work_struct *work) | |
1077 | { | |
3243553f | 1078 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1079 | power_off.work); |
ab81cbf9 JH |
1080 | |
1081 | BT_DBG("%s", hdev->name); | |
1082 | ||
8ee56540 | 1083 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1084 | } |
1085 | ||
c7741d16 MH |
1086 | static void hci_error_reset(struct work_struct *work) |
1087 | { | |
1088 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
1089 | ||
2449007d | 1090 | hci_dev_hold(hdev); |
c7741d16 MH |
1091 | BT_DBG("%s", hdev->name); |
1092 | ||
1093 | if (hdev->hw_error) | |
1094 | hdev->hw_error(hdev, hdev->hw_error_code); | |
1095 | else | |
2064ee33 | 1096 | bt_dev_err(hdev, "hardware error 0x%2.2x", hdev->hw_error_code); |
c7741d16 | 1097 | |
2449007d YH |
1098 | if (!hci_dev_do_close(hdev)) |
1099 | hci_dev_do_open(hdev); | |
c7741d16 | 1100 | |
2449007d | 1101 | hci_dev_put(hdev); |
c7741d16 MH |
1102 | } |
1103 | ||
35f7498a | 1104 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 1105 | { |
4821002c | 1106 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1107 | |
4821002c JH |
1108 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1109 | list_del(&uuid->list); | |
2aeb9a1a JH |
1110 | kfree(uuid); |
1111 | } | |
2aeb9a1a JH |
1112 | } |
1113 | ||
35f7498a | 1114 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 1115 | { |
3673952c | 1116 | struct link_key *key, *tmp; |
55ed8ca1 | 1117 | |
3673952c | 1118 | list_for_each_entry_safe(key, tmp, &hdev->link_keys, list) { |
0378b597 JH |
1119 | list_del_rcu(&key->list); |
1120 | kfree_rcu(key, rcu); | |
55ed8ca1 | 1121 | } |
55ed8ca1 JH |
1122 | } |
1123 | ||
35f7498a | 1124 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 1125 | { |
3673952c | 1126 | struct smp_ltk *k, *tmp; |
b899efaf | 1127 | |
3673952c | 1128 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
970d0f1b JH |
1129 | list_del_rcu(&k->list); |
1130 | kfree_rcu(k, rcu); | |
b899efaf | 1131 | } |
b899efaf VCG |
1132 | } |
1133 | ||
970c4e46 JH |
1134 | void hci_smp_irks_clear(struct hci_dev *hdev) |
1135 | { | |
3673952c | 1136 | struct smp_irk *k, *tmp; |
970c4e46 | 1137 | |
3673952c | 1138 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
adae20cb JH |
1139 | list_del_rcu(&k->list); |
1140 | kfree_rcu(k, rcu); | |
970c4e46 JH |
1141 | } |
1142 | } | |
1143 | ||
600a8749 AM |
1144 | void hci_blocked_keys_clear(struct hci_dev *hdev) |
1145 | { | |
3673952c | 1146 | struct blocked_key *b, *tmp; |
600a8749 | 1147 | |
3673952c | 1148 | list_for_each_entry_safe(b, tmp, &hdev->blocked_keys, list) { |
600a8749 AM |
1149 | list_del_rcu(&b->list); |
1150 | kfree_rcu(b, rcu); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]) | |
1155 | { | |
1156 | bool blocked = false; | |
1157 | struct blocked_key *b; | |
1158 | ||
1159 | rcu_read_lock(); | |
0c2ac7d4 | 1160 | list_for_each_entry_rcu(b, &hdev->blocked_keys, list) { |
600a8749 AM |
1161 | if (b->type == type && !memcmp(b->val, val, sizeof(b->val))) { |
1162 | blocked = true; | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | rcu_read_unlock(); | |
1168 | return blocked; | |
1169 | } | |
1170 | ||
55ed8ca1 JH |
1171 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1172 | { | |
8035ded4 | 1173 | struct link_key *k; |
55ed8ca1 | 1174 | |
0378b597 JH |
1175 | rcu_read_lock(); |
1176 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
1177 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
1178 | rcu_read_unlock(); | |
600a8749 AM |
1179 | |
1180 | if (hci_is_blocked_key(hdev, | |
1181 | HCI_BLOCKED_KEY_TYPE_LINKKEY, | |
1182 | k->val)) { | |
1183 | bt_dev_warn_ratelimited(hdev, | |
1184 | "Link key blocked for %pMR", | |
1185 | &k->bdaddr); | |
1186 | return NULL; | |
1187 | } | |
1188 | ||
55ed8ca1 | 1189 | return k; |
0378b597 JH |
1190 | } |
1191 | } | |
1192 | rcu_read_unlock(); | |
55ed8ca1 JH |
1193 | |
1194 | return NULL; | |
1195 | } | |
1196 | ||
745c0ce3 | 1197 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1198 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1199 | { |
1200 | /* Legacy key */ | |
1201 | if (key_type < 0x03) | |
745c0ce3 | 1202 | return true; |
d25e28ab JH |
1203 | |
1204 | /* Debug keys are insecure so don't store them persistently */ | |
1205 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1206 | return false; |
d25e28ab JH |
1207 | |
1208 | /* Changed combination key and there's no previous one */ | |
1209 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1210 | return false; |
d25e28ab JH |
1211 | |
1212 | /* Security mode 3 case */ | |
1213 | if (!conn) | |
745c0ce3 | 1214 | return true; |
d25e28ab | 1215 | |
e3befab9 JH |
1216 | /* BR/EDR key derived using SC from an LE link */ |
1217 | if (conn->type == LE_LINK) | |
1218 | return true; | |
1219 | ||
d25e28ab JH |
1220 | /* Neither local nor remote side had no-bonding as requirement */ |
1221 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1222 | return true; |
d25e28ab JH |
1223 | |
1224 | /* Local side had dedicated bonding as requirement */ | |
1225 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1226 | return true; |
d25e28ab JH |
1227 | |
1228 | /* Remote side had dedicated bonding as requirement */ | |
1229 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1230 | return true; |
d25e28ab JH |
1231 | |
1232 | /* If none of the above criteria match, then don't store the key | |
1233 | * persistently */ | |
745c0ce3 | 1234 | return false; |
d25e28ab JH |
1235 | } |
1236 | ||
e804d25d | 1237 | static u8 ltk_role(u8 type) |
98a0b845 | 1238 | { |
e804d25d JH |
1239 | if (type == SMP_LTK) |
1240 | return HCI_ROLE_MASTER; | |
98a0b845 | 1241 | |
e804d25d | 1242 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
1243 | } |
1244 | ||
f3a73d97 JH |
1245 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1246 | u8 addr_type, u8 role) | |
75d262c2 | 1247 | { |
c9839a11 | 1248 | struct smp_ltk *k; |
75d262c2 | 1249 | |
970d0f1b JH |
1250 | rcu_read_lock(); |
1251 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
1252 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
1253 | continue; | |
1254 | ||
923e2414 | 1255 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 1256 | rcu_read_unlock(); |
600a8749 AM |
1257 | |
1258 | if (hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_LTK, | |
1259 | k->val)) { | |
1260 | bt_dev_warn_ratelimited(hdev, | |
1261 | "LTK blocked for %pMR", | |
1262 | &k->bdaddr); | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
75d262c2 | 1266 | return k; |
970d0f1b JH |
1267 | } |
1268 | } | |
1269 | rcu_read_unlock(); | |
75d262c2 VCG |
1270 | |
1271 | return NULL; | |
1272 | } | |
75d262c2 | 1273 | |
970c4e46 JH |
1274 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
1275 | { | |
600a8749 | 1276 | struct smp_irk *irk_to_return = NULL; |
970c4e46 JH |
1277 | struct smp_irk *irk; |
1278 | ||
adae20cb JH |
1279 | rcu_read_lock(); |
1280 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
1281 | if (!bacmp(&irk->rpa, rpa)) { | |
600a8749 AM |
1282 | irk_to_return = irk; |
1283 | goto done; | |
adae20cb | 1284 | } |
970c4e46 JH |
1285 | } |
1286 | ||
adae20cb | 1287 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 1288 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 1289 | bacpy(&irk->rpa, rpa); |
600a8749 AM |
1290 | irk_to_return = irk; |
1291 | goto done; | |
970c4e46 JH |
1292 | } |
1293 | } | |
600a8749 AM |
1294 | |
1295 | done: | |
1296 | if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK, | |
1297 | irk_to_return->val)) { | |
1298 | bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR", | |
1299 | &irk_to_return->bdaddr); | |
1300 | irk_to_return = NULL; | |
1301 | } | |
1302 | ||
adae20cb | 1303 | rcu_read_unlock(); |
970c4e46 | 1304 | |
600a8749 | 1305 | return irk_to_return; |
970c4e46 JH |
1306 | } |
1307 | ||
1308 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
1309 | u8 addr_type) | |
1310 | { | |
600a8749 | 1311 | struct smp_irk *irk_to_return = NULL; |
970c4e46 JH |
1312 | struct smp_irk *irk; |
1313 | ||
6cfc9988 JH |
1314 | /* Identity Address must be public or static random */ |
1315 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
1316 | return NULL; | |
1317 | ||
adae20cb JH |
1318 | rcu_read_lock(); |
1319 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 1320 | if (addr_type == irk->addr_type && |
adae20cb | 1321 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
600a8749 AM |
1322 | irk_to_return = irk; |
1323 | goto done; | |
adae20cb | 1324 | } |
970c4e46 | 1325 | } |
600a8749 AM |
1326 | |
1327 | done: | |
1328 | ||
1329 | if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK, | |
1330 | irk_to_return->val)) { | |
1331 | bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR", | |
1332 | &irk_to_return->bdaddr); | |
1333 | irk_to_return = NULL; | |
1334 | } | |
1335 | ||
adae20cb | 1336 | rcu_read_unlock(); |
970c4e46 | 1337 | |
600a8749 | 1338 | return irk_to_return; |
970c4e46 JH |
1339 | } |
1340 | ||
567fa2aa | 1341 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
1342 | bdaddr_t *bdaddr, u8 *val, u8 type, |
1343 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
1344 | { |
1345 | struct link_key *key, *old_key; | |
745c0ce3 | 1346 | u8 old_key_type; |
55ed8ca1 JH |
1347 | |
1348 | old_key = hci_find_link_key(hdev, bdaddr); | |
1349 | if (old_key) { | |
1350 | old_key_type = old_key->type; | |
1351 | key = old_key; | |
1352 | } else { | |
12adcf3a | 1353 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 1354 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 1355 | if (!key) |
567fa2aa | 1356 | return NULL; |
0378b597 | 1357 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
1358 | } |
1359 | ||
6ed93dc6 | 1360 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1361 | |
d25e28ab JH |
1362 | /* Some buggy controller combinations generate a changed |
1363 | * combination key for legacy pairing even when there's no | |
1364 | * previous key */ | |
1365 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1366 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1367 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1368 | if (conn) |
1369 | conn->key_type = type; | |
1370 | } | |
d25e28ab | 1371 | |
55ed8ca1 | 1372 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1373 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1374 | key->pin_len = pin_len; |
1375 | ||
b6020ba0 | 1376 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1377 | key->type = old_key_type; |
4748fed2 JH |
1378 | else |
1379 | key->type = type; | |
1380 | ||
7652ff6a JH |
1381 | if (persistent) |
1382 | *persistent = hci_persistent_key(hdev, conn, type, | |
1383 | old_key_type); | |
4df378a1 | 1384 | |
567fa2aa | 1385 | return key; |
55ed8ca1 JH |
1386 | } |
1387 | ||
ca9142b8 | 1388 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 1389 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 1390 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 1391 | { |
c9839a11 | 1392 | struct smp_ltk *key, *old_key; |
e804d25d | 1393 | u8 role = ltk_role(type); |
75d262c2 | 1394 | |
f3a73d97 | 1395 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 1396 | if (old_key) |
75d262c2 | 1397 | key = old_key; |
c9839a11 | 1398 | else { |
0a14ab41 | 1399 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 1400 | if (!key) |
ca9142b8 | 1401 | return NULL; |
970d0f1b | 1402 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1403 | } |
1404 | ||
75d262c2 | 1405 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1406 | key->bdaddr_type = addr_type; |
1407 | memcpy(key->val, tk, sizeof(key->val)); | |
1408 | key->authenticated = authenticated; | |
1409 | key->ediv = ediv; | |
fe39c7b2 | 1410 | key->rand = rand; |
c9839a11 VCG |
1411 | key->enc_size = enc_size; |
1412 | key->type = type; | |
75d262c2 | 1413 | |
ca9142b8 | 1414 | return key; |
75d262c2 VCG |
1415 | } |
1416 | ||
ca9142b8 JH |
1417 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1418 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
1419 | { |
1420 | struct smp_irk *irk; | |
1421 | ||
1422 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
1423 | if (!irk) { | |
1424 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
1425 | if (!irk) | |
ca9142b8 | 1426 | return NULL; |
970c4e46 JH |
1427 | |
1428 | bacpy(&irk->bdaddr, bdaddr); | |
1429 | irk->addr_type = addr_type; | |
1430 | ||
adae20cb | 1431 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
1432 | } |
1433 | ||
1434 | memcpy(irk->val, val, 16); | |
1435 | bacpy(&irk->rpa, rpa); | |
1436 | ||
ca9142b8 | 1437 | return irk; |
970c4e46 JH |
1438 | } |
1439 | ||
55ed8ca1 JH |
1440 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1441 | { | |
1442 | struct link_key *key; | |
1443 | ||
1444 | key = hci_find_link_key(hdev, bdaddr); | |
1445 | if (!key) | |
1446 | return -ENOENT; | |
1447 | ||
6ed93dc6 | 1448 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 1449 | |
0378b597 JH |
1450 | list_del_rcu(&key->list); |
1451 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
1452 | |
1453 | return 0; | |
1454 | } | |
1455 | ||
e0b2b27e | 1456 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 1457 | { |
c5d2b6fa | 1458 | struct smp_ltk *k, *tmp; |
c51ffa0b | 1459 | int removed = 0; |
b899efaf | 1460 | |
c5d2b6fa | 1461 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
e0b2b27e | 1462 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
1463 | continue; |
1464 | ||
6ed93dc6 | 1465 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 1466 | |
970d0f1b JH |
1467 | list_del_rcu(&k->list); |
1468 | kfree_rcu(k, rcu); | |
c51ffa0b | 1469 | removed++; |
b899efaf VCG |
1470 | } |
1471 | ||
c51ffa0b | 1472 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
1473 | } |
1474 | ||
a7ec7338 JH |
1475 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
1476 | { | |
c5d2b6fa | 1477 | struct smp_irk *k, *tmp; |
a7ec7338 | 1478 | |
c5d2b6fa | 1479 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
1480 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
1481 | continue; | |
1482 | ||
1483 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
1484 | ||
adae20cb JH |
1485 | list_del_rcu(&k->list); |
1486 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
1487 | } |
1488 | } | |
1489 | ||
55e76b38 JH |
1490 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
1491 | { | |
1492 | struct smp_ltk *k; | |
4ba9faf3 | 1493 | struct smp_irk *irk; |
55e76b38 JH |
1494 | u8 addr_type; |
1495 | ||
1496 | if (type == BDADDR_BREDR) { | |
1497 | if (hci_find_link_key(hdev, bdaddr)) | |
1498 | return true; | |
1499 | return false; | |
1500 | } | |
1501 | ||
1502 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
1503 | if (type == BDADDR_LE_PUBLIC) | |
1504 | addr_type = ADDR_LE_DEV_PUBLIC; | |
1505 | else | |
1506 | addr_type = ADDR_LE_DEV_RANDOM; | |
1507 | ||
4ba9faf3 JH |
1508 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
1509 | if (irk) { | |
1510 | bdaddr = &irk->bdaddr; | |
1511 | addr_type = irk->addr_type; | |
1512 | } | |
1513 | ||
55e76b38 JH |
1514 | rcu_read_lock(); |
1515 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
1516 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
1517 | rcu_read_unlock(); | |
55e76b38 | 1518 | return true; |
87c8b28d | 1519 | } |
55e76b38 JH |
1520 | } |
1521 | rcu_read_unlock(); | |
1522 | ||
1523 | return false; | |
1524 | } | |
1525 | ||
6bd32326 | 1526 | /* HCI command timer function */ |
65cc2b49 | 1527 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 1528 | { |
65cc2b49 MH |
1529 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1530 | cmd_timer.work); | |
6bd32326 | 1531 | |
2615fd9a LAD |
1532 | if (hdev->req_skb) { |
1533 | u16 opcode = hci_skb_opcode(hdev->req_skb); | |
bda4f23a | 1534 | |
2064ee33 | 1535 | bt_dev_err(hdev, "command 0x%4.4x tx timeout", opcode); |
63298d6e LAD |
1536 | |
1537 | hci_cmd_sync_cancel_sync(hdev, ETIMEDOUT); | |
bda4f23a | 1538 | } else { |
2064ee33 | 1539 | bt_dev_err(hdev, "command tx timeout"); |
bda4f23a AE |
1540 | } |
1541 | ||
e2bef384 RJ |
1542 | if (hdev->cmd_timeout) |
1543 | hdev->cmd_timeout(hdev); | |
1544 | ||
6bd32326 | 1545 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1546 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1547 | } |
1548 | ||
de75cd0d MM |
1549 | /* HCI ncmd timer function */ |
1550 | static void hci_ncmd_timeout(struct work_struct *work) | |
1551 | { | |
1552 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
1553 | ncmd_timer.work); | |
1554 | ||
1555 | bt_dev_err(hdev, "Controller not accepting commands anymore: ncmd = 0"); | |
1556 | ||
1557 | /* During HCI_INIT phase no events can be injected if the ncmd timer | |
1558 | * triggers since the procedure has its own timeout handling. | |
1559 | */ | |
1560 | if (test_bit(HCI_INIT, &hdev->flags)) | |
1561 | return; | |
1562 | ||
1563 | /* This is an irrecoverable state, inject hardware error event */ | |
1564 | hci_reset_dev(hdev); | |
1565 | } | |
1566 | ||
2763eda6 | 1567 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 1568 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
1569 | { |
1570 | struct oob_data *data; | |
1571 | ||
6928a924 JH |
1572 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
1573 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
1574 | continue; | |
1575 | if (data->bdaddr_type != bdaddr_type) | |
1576 | continue; | |
1577 | return data; | |
1578 | } | |
2763eda6 SJ |
1579 | |
1580 | return NULL; | |
1581 | } | |
1582 | ||
6928a924 JH |
1583 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1584 | u8 bdaddr_type) | |
2763eda6 SJ |
1585 | { |
1586 | struct oob_data *data; | |
1587 | ||
6928a924 | 1588 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
1589 | if (!data) |
1590 | return -ENOENT; | |
1591 | ||
6928a924 | 1592 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
1593 | |
1594 | list_del(&data->list); | |
1595 | kfree(data); | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
35f7498a | 1600 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
1601 | { |
1602 | struct oob_data *data, *n; | |
1603 | ||
1604 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1605 | list_del(&data->list); | |
1606 | kfree(data); | |
1607 | } | |
2763eda6 SJ |
1608 | } |
1609 | ||
0798872e | 1610 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 1611 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 1612 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
1613 | { |
1614 | struct oob_data *data; | |
1615 | ||
6928a924 | 1616 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 1617 | if (!data) { |
0a14ab41 | 1618 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
1619 | if (!data) |
1620 | return -ENOMEM; | |
1621 | ||
1622 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 1623 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
1624 | list_add(&data->list, &hdev->remote_oob_data); |
1625 | } | |
1626 | ||
81328d5c JH |
1627 | if (hash192 && rand192) { |
1628 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
1629 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
1630 | if (hash256 && rand256) |
1631 | data->present = 0x03; | |
81328d5c JH |
1632 | } else { |
1633 | memset(data->hash192, 0, sizeof(data->hash192)); | |
1634 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
1635 | if (hash256 && rand256) |
1636 | data->present = 0x02; | |
1637 | else | |
1638 | data->present = 0x00; | |
0798872e MH |
1639 | } |
1640 | ||
81328d5c JH |
1641 | if (hash256 && rand256) { |
1642 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
1643 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
1644 | } else { | |
1645 | memset(data->hash256, 0, sizeof(data->hash256)); | |
1646 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
1647 | if (hash192 && rand192) |
1648 | data->present = 0x01; | |
81328d5c | 1649 | } |
0798872e | 1650 | |
6ed93dc6 | 1651 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1652 | |
1653 | return 0; | |
1654 | } | |
1655 | ||
d2609b34 FG |
1656 | /* This function requires the caller holds hdev->lock */ |
1657 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
1658 | { | |
1659 | struct adv_info *adv_instance; | |
1660 | ||
1661 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
1662 | if (adv_instance->instance == instance) | |
1663 | return adv_instance; | |
1664 | } | |
1665 | ||
1666 | return NULL; | |
1667 | } | |
1668 | ||
1669 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
1670 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
1671 | { | |
d2609b34 FG |
1672 | struct adv_info *cur_instance; |
1673 | ||
1674 | cur_instance = hci_find_adv_instance(hdev, instance); | |
1675 | if (!cur_instance) | |
1676 | return NULL; | |
1677 | ||
1678 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
1679 | struct adv_info, list)) | |
1680 | return list_first_entry(&hdev->adv_instances, | |
1681 | struct adv_info, list); | |
1682 | else | |
1683 | return list_next_entry(cur_instance, list); | |
1684 | } | |
1685 | ||
1686 | /* This function requires the caller holds hdev->lock */ | |
1687 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
1688 | { | |
1689 | struct adv_info *adv_instance; | |
1690 | ||
1691 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1692 | if (!adv_instance) | |
1693 | return -ENOENT; | |
1694 | ||
1695 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
1696 | ||
cab054ab JH |
1697 | if (hdev->cur_adv_instance == instance) { |
1698 | if (hdev->adv_instance_timeout) { | |
1699 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1700 | hdev->adv_instance_timeout = 0; | |
1701 | } | |
1702 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
1703 | } |
1704 | ||
a73c046a JK |
1705 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
1706 | ||
d2609b34 FG |
1707 | list_del(&adv_instance->list); |
1708 | kfree(adv_instance); | |
1709 | ||
1710 | hdev->adv_instance_cnt--; | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
a73c046a JK |
1715 | void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired) |
1716 | { | |
1717 | struct adv_info *adv_instance, *n; | |
1718 | ||
1719 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) | |
1720 | adv_instance->rpa_expired = rpa_expired; | |
1721 | } | |
1722 | ||
d2609b34 FG |
1723 | /* This function requires the caller holds hdev->lock */ |
1724 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
1725 | { | |
1726 | struct adv_info *adv_instance, *n; | |
1727 | ||
5d900e46 FG |
1728 | if (hdev->adv_instance_timeout) { |
1729 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1730 | hdev->adv_instance_timeout = 0; | |
1731 | } | |
1732 | ||
d2609b34 | 1733 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
a73c046a | 1734 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
d2609b34 FG |
1735 | list_del(&adv_instance->list); |
1736 | kfree(adv_instance); | |
1737 | } | |
1738 | ||
1739 | hdev->adv_instance_cnt = 0; | |
cab054ab | 1740 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
1741 | } |
1742 | ||
a73c046a JK |
1743 | static void adv_instance_rpa_expired(struct work_struct *work) |
1744 | { | |
1745 | struct adv_info *adv_instance = container_of(work, struct adv_info, | |
1746 | rpa_expired_cb.work); | |
1747 | ||
1748 | BT_DBG(""); | |
1749 | ||
1750 | adv_instance->rpa_expired = true; | |
1751 | } | |
1752 | ||
d2609b34 | 1753 | /* This function requires the caller holds hdev->lock */ |
eca0ae4a LAD |
1754 | struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, |
1755 | u32 flags, u16 adv_data_len, u8 *adv_data, | |
1756 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
1757 | u16 timeout, u16 duration, s8 tx_power, | |
b338d917 BG |
1758 | u32 min_interval, u32 max_interval, |
1759 | u8 mesh_handle) | |
d2609b34 | 1760 | { |
eca0ae4a | 1761 | struct adv_info *adv; |
d2609b34 | 1762 | |
eca0ae4a LAD |
1763 | adv = hci_find_adv_instance(hdev, instance); |
1764 | if (adv) { | |
1765 | memset(adv->adv_data, 0, sizeof(adv->adv_data)); | |
1766 | memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data)); | |
1767 | memset(adv->per_adv_data, 0, sizeof(adv->per_adv_data)); | |
d2609b34 | 1768 | } else { |
1d0fac2c | 1769 | if (hdev->adv_instance_cnt >= hdev->le_num_of_adv_sets || |
b338d917 | 1770 | instance < 1 || instance > hdev->le_num_of_adv_sets + 1) |
eca0ae4a | 1771 | return ERR_PTR(-EOVERFLOW); |
d2609b34 | 1772 | |
eca0ae4a LAD |
1773 | adv = kzalloc(sizeof(*adv), GFP_KERNEL); |
1774 | if (!adv) | |
1775 | return ERR_PTR(-ENOMEM); | |
d2609b34 | 1776 | |
eca0ae4a LAD |
1777 | adv->pending = true; |
1778 | adv->instance = instance; | |
1779 | list_add(&adv->list, &hdev->adv_instances); | |
d2609b34 FG |
1780 | hdev->adv_instance_cnt++; |
1781 | } | |
1782 | ||
eca0ae4a LAD |
1783 | adv->flags = flags; |
1784 | adv->min_interval = min_interval; | |
1785 | adv->max_interval = max_interval; | |
1786 | adv->tx_power = tx_power; | |
b338d917 BG |
1787 | /* Defining a mesh_handle changes the timing units to ms, |
1788 | * rather than seconds, and ties the instance to the requested | |
1789 | * mesh_tx queue. | |
1790 | */ | |
1791 | adv->mesh = mesh_handle; | |
d2609b34 | 1792 | |
34a718bc LAD |
1793 | hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data, |
1794 | scan_rsp_len, scan_rsp_data); | |
d2609b34 | 1795 | |
eca0ae4a LAD |
1796 | adv->timeout = timeout; |
1797 | adv->remaining_time = timeout; | |
d2609b34 FG |
1798 | |
1799 | if (duration == 0) | |
eca0ae4a | 1800 | adv->duration = hdev->def_multi_adv_rotation_duration; |
d2609b34 | 1801 | else |
eca0ae4a | 1802 | adv->duration = duration; |
d2609b34 | 1803 | |
eca0ae4a | 1804 | INIT_DELAYED_WORK(&adv->rpa_expired_cb, adv_instance_rpa_expired); |
a73c046a | 1805 | |
d2609b34 FG |
1806 | BT_DBG("%s for %dMR", hdev->name, instance); |
1807 | ||
eca0ae4a LAD |
1808 | return adv; |
1809 | } | |
1810 | ||
1811 | /* This function requires the caller holds hdev->lock */ | |
1812 | struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, | |
1813 | u32 flags, u8 data_len, u8 *data, | |
1814 | u32 min_interval, u32 max_interval) | |
1815 | { | |
1816 | struct adv_info *adv; | |
1817 | ||
1818 | adv = hci_add_adv_instance(hdev, instance, flags, 0, NULL, 0, NULL, | |
1819 | 0, 0, HCI_ADV_TX_POWER_NO_PREFERENCE, | |
b338d917 | 1820 | min_interval, max_interval, 0); |
eca0ae4a LAD |
1821 | if (IS_ERR(adv)) |
1822 | return adv; | |
1823 | ||
1824 | adv->periodic = true; | |
1825 | adv->per_adv_data_len = data_len; | |
1826 | ||
1827 | if (data) | |
1828 | memcpy(adv->per_adv_data, data, data_len); | |
1829 | ||
1830 | return adv; | |
d2609b34 FG |
1831 | } |
1832 | ||
31aab5c2 DW |
1833 | /* This function requires the caller holds hdev->lock */ |
1834 | int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, | |
1835 | u16 adv_data_len, u8 *adv_data, | |
1836 | u16 scan_rsp_len, u8 *scan_rsp_data) | |
1837 | { | |
34a718bc | 1838 | struct adv_info *adv; |
31aab5c2 | 1839 | |
34a718bc | 1840 | adv = hci_find_adv_instance(hdev, instance); |
31aab5c2 DW |
1841 | |
1842 | /* If advertisement doesn't exist, we can't modify its data */ | |
34a718bc | 1843 | if (!adv) |
31aab5c2 DW |
1844 | return -ENOENT; |
1845 | ||
34a718bc LAD |
1846 | if (adv_data_len && ADV_DATA_CMP(adv, adv_data, adv_data_len)) { |
1847 | memset(adv->adv_data, 0, sizeof(adv->adv_data)); | |
1848 | memcpy(adv->adv_data, adv_data, adv_data_len); | |
1849 | adv->adv_data_len = adv_data_len; | |
1850 | adv->adv_data_changed = true; | |
31aab5c2 DW |
1851 | } |
1852 | ||
34a718bc LAD |
1853 | if (scan_rsp_len && SCAN_RSP_CMP(adv, scan_rsp_data, scan_rsp_len)) { |
1854 | memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data)); | |
1855 | memcpy(adv->scan_rsp_data, scan_rsp_data, scan_rsp_len); | |
1856 | adv->scan_rsp_len = scan_rsp_len; | |
1857 | adv->scan_rsp_changed = true; | |
31aab5c2 DW |
1858 | } |
1859 | ||
34a718bc LAD |
1860 | /* Mark as changed if there are flags which would affect it */ |
1861 | if (((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) || | |
1862 | adv->flags & MGMT_ADV_FLAG_LOCAL_NAME) | |
1863 | adv->scan_rsp_changed = true; | |
1864 | ||
31aab5c2 DW |
1865 | return 0; |
1866 | } | |
1867 | ||
01ce70b0 LAD |
1868 | /* This function requires the caller holds hdev->lock */ |
1869 | u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance) | |
1870 | { | |
1871 | u32 flags; | |
1872 | struct adv_info *adv; | |
1873 | ||
1874 | if (instance == 0x00) { | |
1875 | /* Instance 0 always manages the "Tx Power" and "Flags" | |
1876 | * fields | |
1877 | */ | |
1878 | flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS; | |
1879 | ||
1880 | /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting | |
1881 | * corresponds to the "connectable" instance flag. | |
1882 | */ | |
1883 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) | |
1884 | flags |= MGMT_ADV_FLAG_CONNECTABLE; | |
1885 | ||
1886 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) | |
1887 | flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; | |
1888 | else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
1889 | flags |= MGMT_ADV_FLAG_DISCOV; | |
1890 | ||
1891 | return flags; | |
1892 | } | |
1893 | ||
1894 | adv = hci_find_adv_instance(hdev, instance); | |
1895 | ||
1896 | /* Return 0 when we got an invalid instance identifier. */ | |
1897 | if (!adv) | |
1898 | return 0; | |
1899 | ||
1900 | return adv->flags; | |
1901 | } | |
1902 | ||
1903 | bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance) | |
1904 | { | |
1905 | struct adv_info *adv; | |
1906 | ||
1907 | /* Instance 0x00 always set local name */ | |
1908 | if (instance == 0x00) | |
1909 | return true; | |
1910 | ||
1911 | adv = hci_find_adv_instance(hdev, instance); | |
1912 | if (!adv) | |
1913 | return false; | |
1914 | ||
1915 | if (adv->flags & MGMT_ADV_FLAG_APPEARANCE || | |
1916 | adv->flags & MGMT_ADV_FLAG_LOCAL_NAME) | |
1917 | return true; | |
1918 | ||
1919 | return adv->scan_rsp_len ? true : false; | |
1920 | } | |
1921 | ||
e5e1e7fd MC |
1922 | /* This function requires the caller holds hdev->lock */ |
1923 | void hci_adv_monitors_clear(struct hci_dev *hdev) | |
1924 | { | |
b139553d MC |
1925 | struct adv_monitor *monitor; |
1926 | int handle; | |
1927 | ||
1928 | idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle) | |
66bd095a | 1929 | hci_free_adv_monitor(hdev, monitor); |
b139553d | 1930 | |
e5e1e7fd MC |
1931 | idr_destroy(&hdev->adv_monitors_idr); |
1932 | } | |
1933 | ||
66bd095a AP |
1934 | /* Frees the monitor structure and do some bookkeepings. |
1935 | * This function requires the caller holds hdev->lock. | |
1936 | */ | |
1937 | void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) | |
b139553d MC |
1938 | { |
1939 | struct adv_pattern *pattern; | |
1940 | struct adv_pattern *tmp; | |
1941 | ||
1942 | if (!monitor) | |
1943 | return; | |
1944 | ||
66bd095a AP |
1945 | list_for_each_entry_safe(pattern, tmp, &monitor->patterns, list) { |
1946 | list_del(&pattern->list); | |
b139553d | 1947 | kfree(pattern); |
66bd095a AP |
1948 | } |
1949 | ||
1950 | if (monitor->handle) | |
1951 | idr_remove(&hdev->adv_monitors_idr, monitor->handle); | |
1952 | ||
1953 | if (monitor->state != ADV_MONITOR_STATE_NOT_REGISTERED) { | |
1954 | hdev->adv_monitors_cnt--; | |
1955 | mgmt_adv_monitor_removed(hdev, monitor->handle); | |
1956 | } | |
b139553d MC |
1957 | |
1958 | kfree(monitor); | |
1959 | } | |
1960 | ||
a2a4dedf AP |
1961 | /* Assigns handle to a monitor, and if offloading is supported and power is on, |
1962 | * also attempts to forward the request to the controller. | |
b747a836 | 1963 | * This function requires the caller holds hci_req_sync_lock. |
a2a4dedf | 1964 | */ |
b747a836 | 1965 | int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) |
b139553d MC |
1966 | { |
1967 | int min, max, handle; | |
b747a836 | 1968 | int status = 0; |
b139553d | 1969 | |
b747a836 MM |
1970 | if (!monitor) |
1971 | return -EINVAL; | |
a2a4dedf | 1972 | |
b747a836 | 1973 | hci_dev_lock(hdev); |
b139553d MC |
1974 | |
1975 | min = HCI_MIN_ADV_MONITOR_HANDLE; | |
1976 | max = HCI_MIN_ADV_MONITOR_HANDLE + HCI_MAX_ADV_MONITOR_NUM_HANDLES; | |
1977 | handle = idr_alloc(&hdev->adv_monitors_idr, monitor, min, max, | |
1978 | GFP_KERNEL); | |
b747a836 MM |
1979 | |
1980 | hci_dev_unlock(hdev); | |
1981 | ||
1982 | if (handle < 0) | |
1983 | return handle; | |
b139553d | 1984 | |
b139553d | 1985 | monitor->handle = handle; |
8208f5a9 | 1986 | |
a2a4dedf | 1987 | if (!hdev_is_powered(hdev)) |
b747a836 | 1988 | return status; |
8208f5a9 | 1989 | |
a2a4dedf AP |
1990 | switch (hci_get_adv_monitor_offload_ext(hdev)) { |
1991 | case HCI_ADV_MONITOR_EXT_NONE: | |
6f55eea1 | 1992 | bt_dev_dbg(hdev, "add monitor %d status %d", |
b747a836 | 1993 | monitor->handle, status); |
a2a4dedf | 1994 | /* Message was not forwarded to controller - not an error */ |
b747a836 MM |
1995 | break; |
1996 | ||
a2a4dedf | 1997 | case HCI_ADV_MONITOR_EXT_MSFT: |
b747a836 | 1998 | status = msft_add_monitor_pattern(hdev, monitor); |
6f55eea1 | 1999 | bt_dev_dbg(hdev, "add monitor %d msft status %d", |
a2bcd2b6 | 2000 | handle, status); |
a2a4dedf AP |
2001 | break; |
2002 | } | |
2003 | ||
b747a836 | 2004 | return status; |
b139553d MC |
2005 | } |
2006 | ||
66bd095a AP |
2007 | /* Attempts to tell the controller and free the monitor. If somehow the |
2008 | * controller doesn't have a corresponding handle, remove anyway. | |
7cf5c297 | 2009 | * This function requires the caller holds hci_req_sync_lock. |
66bd095a | 2010 | */ |
7cf5c297 MM |
2011 | static int hci_remove_adv_monitor(struct hci_dev *hdev, |
2012 | struct adv_monitor *monitor) | |
bd2fbc6c | 2013 | { |
7cf5c297 | 2014 | int status = 0; |
de6dfcef | 2015 | int handle; |
bd2fbc6c | 2016 | |
66bd095a AP |
2017 | switch (hci_get_adv_monitor_offload_ext(hdev)) { |
2018 | case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */ | |
6f55eea1 | 2019 | bt_dev_dbg(hdev, "remove monitor %d status %d", |
7cf5c297 | 2020 | monitor->handle, status); |
66bd095a | 2021 | goto free_monitor; |
7cf5c297 | 2022 | |
66bd095a | 2023 | case HCI_ADV_MONITOR_EXT_MSFT: |
de6dfcef | 2024 | handle = monitor->handle; |
7cf5c297 | 2025 | status = msft_remove_monitor(hdev, monitor); |
6f55eea1 DA |
2026 | bt_dev_dbg(hdev, "remove monitor %d msft status %d", |
2027 | handle, status); | |
66bd095a AP |
2028 | break; |
2029 | } | |
bd2fbc6c | 2030 | |
66bd095a | 2031 | /* In case no matching handle registered, just free the monitor */ |
7cf5c297 | 2032 | if (status == -ENOENT) |
66bd095a AP |
2033 | goto free_monitor; |
2034 | ||
7cf5c297 | 2035 | return status; |
66bd095a AP |
2036 | |
2037 | free_monitor: | |
7cf5c297 | 2038 | if (status == -ENOENT) |
66bd095a AP |
2039 | bt_dev_warn(hdev, "Removing monitor with no matching handle %d", |
2040 | monitor->handle); | |
2041 | hci_free_adv_monitor(hdev, monitor); | |
2042 | ||
7cf5c297 | 2043 | return status; |
bd2fbc6c MC |
2044 | } |
2045 | ||
7cf5c297 MM |
2046 | /* This function requires the caller holds hci_req_sync_lock */ |
2047 | int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle) | |
66bd095a AP |
2048 | { |
2049 | struct adv_monitor *monitor = idr_find(&hdev->adv_monitors_idr, handle); | |
66bd095a | 2050 | |
7cf5c297 MM |
2051 | if (!monitor) |
2052 | return -EINVAL; | |
66bd095a | 2053 | |
7cf5c297 | 2054 | return hci_remove_adv_monitor(hdev, monitor); |
66bd095a AP |
2055 | } |
2056 | ||
7cf5c297 MM |
2057 | /* This function requires the caller holds hci_req_sync_lock */ |
2058 | int hci_remove_all_adv_monitor(struct hci_dev *hdev) | |
bd2fbc6c MC |
2059 | { |
2060 | struct adv_monitor *monitor; | |
66bd095a | 2061 | int idr_next_id = 0; |
7cf5c297 | 2062 | int status = 0; |
66bd095a | 2063 | |
7cf5c297 | 2064 | while (1) { |
66bd095a | 2065 | monitor = idr_get_next(&hdev->adv_monitors_idr, &idr_next_id); |
bd2fbc6c | 2066 | if (!monitor) |
66bd095a | 2067 | break; |
bd2fbc6c | 2068 | |
7cf5c297 MM |
2069 | status = hci_remove_adv_monitor(hdev, monitor); |
2070 | if (status) | |
2071 | return status; | |
66bd095a | 2072 | |
7cf5c297 | 2073 | idr_next_id++; |
bd2fbc6c MC |
2074 | } |
2075 | ||
7cf5c297 | 2076 | return status; |
bd2fbc6c MC |
2077 | } |
2078 | ||
8208f5a9 MC |
2079 | /* This function requires the caller holds hdev->lock */ |
2080 | bool hci_is_adv_monitoring(struct hci_dev *hdev) | |
2081 | { | |
2082 | return !idr_is_empty(&hdev->adv_monitors_idr); | |
2083 | } | |
2084 | ||
a2a4dedf AP |
2085 | int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev) |
2086 | { | |
2087 | if (msft_monitor_supported(hdev)) | |
2088 | return HCI_ADV_MONITOR_EXT_MSFT; | |
2089 | ||
2090 | return HCI_ADV_MONITOR_EXT_NONE; | |
2091 | } | |
2092 | ||
dcc36c16 | 2093 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2094 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2095 | { |
8035ded4 | 2096 | struct bdaddr_list *b; |
b2a66aad | 2097 | |
dcc36c16 | 2098 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2099 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2100 | return b; |
b9ee0a78 | 2101 | } |
b2a66aad AJ |
2102 | |
2103 | return NULL; | |
2104 | } | |
2105 | ||
b950aa88 AN |
2106 | struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( |
2107 | struct list_head *bdaddr_list, bdaddr_t *bdaddr, | |
2108 | u8 type) | |
2109 | { | |
2110 | struct bdaddr_list_with_irk *b; | |
2111 | ||
2112 | list_for_each_entry(b, bdaddr_list, list) { | |
2113 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
2114 | return b; | |
2115 | } | |
2116 | ||
2117 | return NULL; | |
2118 | } | |
2119 | ||
8baaa403 APS |
2120 | struct bdaddr_list_with_flags * |
2121 | hci_bdaddr_list_lookup_with_flags(struct list_head *bdaddr_list, | |
2122 | bdaddr_t *bdaddr, u8 type) | |
2123 | { | |
2124 | struct bdaddr_list_with_flags *b; | |
2125 | ||
2126 | list_for_each_entry(b, bdaddr_list, list) { | |
2127 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
2128 | return b; | |
2129 | } | |
2130 | ||
2131 | return NULL; | |
2132 | } | |
2133 | ||
dcc36c16 | 2134 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2135 | { |
7eb7404f | 2136 | struct bdaddr_list *b, *n; |
b2a66aad | 2137 | |
7eb7404f GT |
2138 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2139 | list_del(&b->list); | |
b2a66aad AJ |
2140 | kfree(b); |
2141 | } | |
b2a66aad AJ |
2142 | } |
2143 | ||
dcc36c16 | 2144 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2145 | { |
2146 | struct bdaddr_list *entry; | |
b2a66aad | 2147 | |
b9ee0a78 | 2148 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2149 | return -EBADF; |
2150 | ||
dcc36c16 | 2151 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2152 | return -EEXIST; |
b2a66aad | 2153 | |
27f70f3e | 2154 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2155 | if (!entry) |
2156 | return -ENOMEM; | |
b2a66aad AJ |
2157 | |
2158 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2159 | entry->bdaddr_type = type; |
b2a66aad | 2160 | |
dcc36c16 | 2161 | list_add(&entry->list, list); |
b2a66aad | 2162 | |
2a8357f2 | 2163 | return 0; |
b2a66aad AJ |
2164 | } |
2165 | ||
b950aa88 AN |
2166 | int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
2167 | u8 type, u8 *peer_irk, u8 *local_irk) | |
2168 | { | |
2169 | struct bdaddr_list_with_irk *entry; | |
2170 | ||
2171 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
2172 | return -EBADF; | |
2173 | ||
2174 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) | |
2175 | return -EEXIST; | |
2176 | ||
2177 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
2178 | if (!entry) | |
2179 | return -ENOMEM; | |
2180 | ||
2181 | bacpy(&entry->bdaddr, bdaddr); | |
2182 | entry->bdaddr_type = type; | |
2183 | ||
2184 | if (peer_irk) | |
2185 | memcpy(entry->peer_irk, peer_irk, 16); | |
2186 | ||
2187 | if (local_irk) | |
2188 | memcpy(entry->local_irk, local_irk, 16); | |
2189 | ||
2190 | list_add(&entry->list, list); | |
2191 | ||
2192 | return 0; | |
2193 | } | |
2194 | ||
8baaa403 APS |
2195 | int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, |
2196 | u8 type, u32 flags) | |
2197 | { | |
2198 | struct bdaddr_list_with_flags *entry; | |
2199 | ||
2200 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
2201 | return -EBADF; | |
2202 | ||
2203 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) | |
2204 | return -EEXIST; | |
2205 | ||
2206 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
2207 | if (!entry) | |
2208 | return -ENOMEM; | |
2209 | ||
2210 | bacpy(&entry->bdaddr, bdaddr); | |
2211 | entry->bdaddr_type = type; | |
e1cff700 | 2212 | entry->flags = flags; |
8baaa403 APS |
2213 | |
2214 | list_add(&entry->list, list); | |
2215 | ||
2216 | return 0; | |
2217 | } | |
2218 | ||
dcc36c16 | 2219 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2220 | { |
2221 | struct bdaddr_list *entry; | |
b2a66aad | 2222 | |
35f7498a | 2223 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2224 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2225 | return 0; |
2226 | } | |
b2a66aad | 2227 | |
dcc36c16 | 2228 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2229 | if (!entry) |
2230 | return -ENOENT; | |
2231 | ||
2232 | list_del(&entry->list); | |
2233 | kfree(entry); | |
2234 | ||
2235 | return 0; | |
2236 | } | |
2237 | ||
b950aa88 AN |
2238 | int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
2239 | u8 type) | |
2240 | { | |
2241 | struct bdaddr_list_with_irk *entry; | |
2242 | ||
2243 | if (!bacmp(bdaddr, BDADDR_ANY)) { | |
2244 | hci_bdaddr_list_clear(list); | |
2245 | return 0; | |
2246 | } | |
2247 | ||
2248 | entry = hci_bdaddr_list_lookup_with_irk(list, bdaddr, type); | |
2249 | if (!entry) | |
2250 | return -ENOENT; | |
2251 | ||
2252 | list_del(&entry->list); | |
2253 | kfree(entry); | |
2254 | ||
2255 | return 0; | |
2256 | } | |
2257 | ||
8baaa403 APS |
2258 | int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, |
2259 | u8 type) | |
2260 | { | |
2261 | struct bdaddr_list_with_flags *entry; | |
2262 | ||
2263 | if (!bacmp(bdaddr, BDADDR_ANY)) { | |
2264 | hci_bdaddr_list_clear(list); | |
2265 | return 0; | |
2266 | } | |
2267 | ||
2268 | entry = hci_bdaddr_list_lookup_with_flags(list, bdaddr, type); | |
2269 | if (!entry) | |
2270 | return -ENOENT; | |
2271 | ||
2272 | list_del(&entry->list); | |
2273 | kfree(entry); | |
2274 | ||
2275 | return 0; | |
2276 | } | |
2277 | ||
15819a70 AG |
2278 | /* This function requires the caller holds hdev->lock */ |
2279 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2280 | bdaddr_t *addr, u8 addr_type) | |
2281 | { | |
2282 | struct hci_conn_params *params; | |
2283 | ||
2284 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2285 | if (bacmp(¶ms->addr, addr) == 0 && | |
2286 | params->addr_type == addr_type) { | |
2287 | return params; | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | return NULL; | |
2292 | } | |
2293 | ||
195ef75e | 2294 | /* This function requires the caller holds hdev->lock or rcu_read_lock */ |
501f8827 JH |
2295 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2296 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2297 | { |
912b42ef | 2298 | struct hci_conn_params *param; |
a9b0a04c | 2299 | |
195ef75e PV |
2300 | rcu_read_lock(); |
2301 | ||
2302 | list_for_each_entry_rcu(param, list, action) { | |
912b42ef | 2303 | if (bacmp(¶m->addr, addr) == 0 && |
195ef75e PV |
2304 | param->addr_type == addr_type) { |
2305 | rcu_read_unlock(); | |
912b42ef | 2306 | return param; |
195ef75e | 2307 | } |
4b10966f MH |
2308 | } |
2309 | ||
195ef75e PV |
2310 | rcu_read_unlock(); |
2311 | ||
4b10966f | 2312 | return NULL; |
a9b0a04c AG |
2313 | } |
2314 | ||
195ef75e PV |
2315 | /* This function requires the caller holds hdev->lock */ |
2316 | void hci_pend_le_list_del_init(struct hci_conn_params *param) | |
2317 | { | |
2318 | if (list_empty(¶m->action)) | |
2319 | return; | |
2320 | ||
2321 | list_del_rcu(¶m->action); | |
2322 | synchronize_rcu(); | |
2323 | INIT_LIST_HEAD(¶m->action); | |
2324 | } | |
2325 | ||
2326 | /* This function requires the caller holds hdev->lock */ | |
2327 | void hci_pend_le_list_add(struct hci_conn_params *param, | |
2328 | struct list_head *list) | |
2329 | { | |
2330 | list_add_rcu(¶m->action, list); | |
2331 | } | |
2332 | ||
15819a70 | 2333 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2334 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2335 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2336 | { |
2337 | struct hci_conn_params *params; | |
2338 | ||
2339 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2340 | if (params) |
51d167c0 | 2341 | return params; |
15819a70 AG |
2342 | |
2343 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2344 | if (!params) { | |
2064ee33 | 2345 | bt_dev_err(hdev, "out of memory"); |
51d167c0 | 2346 | return NULL; |
15819a70 AG |
2347 | } |
2348 | ||
2349 | bacpy(¶ms->addr, addr); | |
2350 | params->addr_type = addr_type; | |
cef952ce AG |
2351 | |
2352 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2353 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2354 | |
bf5b3c8b MH |
2355 | params->conn_min_interval = hdev->le_conn_min_interval; |
2356 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2357 | params->conn_latency = hdev->le_conn_latency; | |
2358 | params->supervision_timeout = hdev->le_supv_timeout; | |
2359 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2360 | ||
2361 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2362 | ||
51d167c0 | 2363 | return params; |
bf5b3c8b MH |
2364 | } |
2365 | ||
195ef75e | 2366 | void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2367 | { |
195ef75e PV |
2368 | hci_pend_le_list_del_init(params); |
2369 | ||
f8aaf9b6 | 2370 | if (params->conn) { |
f161dd41 | 2371 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2372 | hci_conn_put(params->conn); |
2373 | } | |
f161dd41 | 2374 | |
15819a70 AG |
2375 | list_del(¶ms->list); |
2376 | kfree(params); | |
f6c63249 JH |
2377 | } |
2378 | ||
2379 | /* This function requires the caller holds hdev->lock */ | |
2380 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2381 | { | |
2382 | struct hci_conn_params *params; | |
2383 | ||
2384 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2385 | if (!params) | |
2386 | return; | |
2387 | ||
2388 | hci_conn_params_free(params); | |
15819a70 | 2389 | |
5bee2fd6 | 2390 | hci_update_passive_scan(hdev); |
95305baa | 2391 | |
15819a70 AG |
2392 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2393 | } | |
2394 | ||
2395 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2396 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2397 | { |
2398 | struct hci_conn_params *params, *tmp; | |
2399 | ||
2400 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2401 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2402 | continue; | |
f75113a2 | 2403 | |
91641b79 | 2404 | /* If trying to establish one time connection to disabled |
f75113a2 JP |
2405 | * device, leave the params, but mark them as just once. |
2406 | */ | |
2407 | if (params->explicit_connect) { | |
2408 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2409 | continue; | |
2410 | } | |
2411 | ||
195ef75e | 2412 | hci_conn_params_free(params); |
15819a70 AG |
2413 | } |
2414 | ||
55af49a8 | 2415 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2416 | } |
2417 | ||
2418 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2419 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2420 | { |
15819a70 | 2421 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2422 | |
f6c63249 JH |
2423 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2424 | hci_conn_params_free(params); | |
77a77a30 | 2425 | |
15819a70 | 2426 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2427 | } |
2428 | ||
a1f4c318 JH |
2429 | /* Copy the Identity Address of the controller. |
2430 | * | |
2431 | * If the controller has a public BD_ADDR, then by default use that one. | |
2432 | * If this is a LE only controller without a public address, default to | |
2433 | * the static random address. | |
2434 | * | |
2435 | * For debugging purposes it is possible to force controllers with a | |
2436 | * public address to use the static random address instead. | |
50b5b952 MH |
2437 | * |
2438 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2439 | * userspace has configured a static address, then that address | |
2440 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2441 | */ |
2442 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2443 | u8 *bdaddr_type) | |
2444 | { | |
b7cb93e5 | 2445 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2446 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2447 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2448 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2449 | bacpy(bdaddr, &hdev->static_addr); |
2450 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2451 | } else { | |
2452 | bacpy(bdaddr, &hdev->bdaddr); | |
2453 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2454 | } | |
2455 | } | |
2456 | ||
2f20216c APS |
2457 | static void hci_clear_wake_reason(struct hci_dev *hdev) |
2458 | { | |
2459 | hci_dev_lock(hdev); | |
2460 | ||
2461 | hdev->wake_reason = 0; | |
2462 | bacpy(&hdev->wake_addr, BDADDR_ANY); | |
2463 | hdev->wake_addr_type = 0; | |
2464 | ||
2465 | hci_dev_unlock(hdev); | |
2466 | } | |
2467 | ||
9952d90e APS |
2468 | static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, |
2469 | void *data) | |
2470 | { | |
2471 | struct hci_dev *hdev = | |
2472 | container_of(nb, struct hci_dev, suspend_notifier); | |
2473 | int ret = 0; | |
9952d90e | 2474 | |
4b8af331 APS |
2475 | /* Userspace has full control of this device. Do nothing. */ |
2476 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
2477 | return NOTIFY_DONE; | |
2478 | ||
573ebae1 YH |
2479 | /* To avoid a potential race with hci_unregister_dev. */ |
2480 | hci_dev_hold(hdev); | |
2481 | ||
e1b77d68 LAD |
2482 | if (action == PM_SUSPEND_PREPARE) |
2483 | ret = hci_suspend_dev(hdev); | |
2484 | else if (action == PM_POST_SUSPEND) | |
2485 | ret = hci_resume_dev(hdev); | |
2f20216c | 2486 | |
a9ec8423 APS |
2487 | if (ret) |
2488 | bt_dev_err(hdev, "Suspend notifier action (%lu) failed: %d", | |
2489 | action, ret); | |
2490 | ||
573ebae1 | 2491 | hci_dev_put(hdev); |
24b06572 | 2492 | return NOTIFY_DONE; |
9952d90e | 2493 | } |
8731840a | 2494 | |
9be0dab7 | 2495 | /* Alloc HCI device */ |
6ec56613 | 2496 | struct hci_dev *hci_alloc_dev_priv(int sizeof_priv) |
9be0dab7 DR |
2497 | { |
2498 | struct hci_dev *hdev; | |
6ec56613 | 2499 | unsigned int alloc_size; |
9be0dab7 | 2500 | |
6ec56613 THJA |
2501 | alloc_size = sizeof(*hdev); |
2502 | if (sizeof_priv) { | |
2503 | /* Fixme: May need ALIGN-ment? */ | |
2504 | alloc_size += sizeof_priv; | |
2505 | } | |
9be0dab7 | 2506 | |
6ec56613 | 2507 | hdev = kzalloc(alloc_size, GFP_KERNEL); |
9be0dab7 DR |
2508 | if (!hdev) |
2509 | return NULL; | |
2510 | ||
b1b813d4 DR |
2511 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2512 | hdev->esco_type = (ESCO_HV1); | |
2513 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2514 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2515 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2516 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2517 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2518 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2519 | hdev->adv_instance_cnt = 0; |
2520 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2521 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2522 | |
c4f1f408 HC |
2523 | hdev->advmon_allowlist_duration = 300; |
2524 | hdev->advmon_no_filter_duration = 500; | |
80af16a3 | 2525 | hdev->enable_advmon_interleave_scan = 0x00; /* Default to disable */ |
c4f1f408 | 2526 | |
b1b813d4 DR |
2527 | hdev->sniff_max_interval = 800; |
2528 | hdev->sniff_min_interval = 80; | |
2529 | ||
3f959d46 | 2530 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2531 | hdev->le_adv_min_interval = 0x0800; |
2532 | hdev->le_adv_max_interval = 0x0800; | |
7c2cc5b1 LAD |
2533 | hdev->le_scan_interval = DISCOV_LE_SCAN_INT_FAST; |
2534 | hdev->le_scan_window = DISCOV_LE_SCAN_WIN_FAST; | |
2535 | hdev->le_scan_int_suspend = DISCOV_LE_SCAN_INT_SLOW1; | |
2536 | hdev->le_scan_window_suspend = DISCOV_LE_SCAN_WIN_SLOW1; | |
10873f99 AM |
2537 | hdev->le_scan_int_discovery = DISCOV_LE_SCAN_INT; |
2538 | hdev->le_scan_window_discovery = DISCOV_LE_SCAN_WIN; | |
7c2cc5b1 LAD |
2539 | hdev->le_scan_int_adv_monitor = DISCOV_LE_SCAN_INT_FAST; |
2540 | hdev->le_scan_window_adv_monitor = DISCOV_LE_SCAN_WIN_FAST; | |
2541 | hdev->le_scan_int_connect = DISCOV_LE_SCAN_INT_CONN; | |
2542 | hdev->le_scan_window_connect = DISCOV_LE_SCAN_WIN_CONN; | |
b48c3b59 JH |
2543 | hdev->le_conn_min_interval = 0x0018; |
2544 | hdev->le_conn_max_interval = 0x0028; | |
04fb7d90 MH |
2545 | hdev->le_conn_latency = 0x0000; |
2546 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2547 | hdev->le_def_tx_len = 0x001b; |
2548 | hdev->le_def_tx_time = 0x0148; | |
2549 | hdev->le_max_tx_len = 0x001b; | |
2550 | hdev->le_max_tx_time = 0x0148; | |
2551 | hdev->le_max_rx_len = 0x001b; | |
2552 | hdev->le_max_rx_time = 0x0148; | |
30d65e08 MK |
2553 | hdev->le_max_key_size = SMP_MAX_ENC_KEY_SIZE; |
2554 | hdev->le_min_key_size = SMP_MIN_ENC_KEY_SIZE; | |
6decb5b4 JK |
2555 | hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M; |
2556 | hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M; | |
1d0fac2c | 2557 | hdev->le_num_of_adv_sets = HCI_MAX_ADV_INSTANCES; |
10873f99 | 2558 | hdev->def_multi_adv_rotation_duration = HCI_DEFAULT_ADV_DURATION; |
21d74b6b | 2559 | hdev->def_le_autoconnect_timeout = HCI_LE_CONN_TIMEOUT; |
7c395ea5 DW |
2560 | hdev->min_le_tx_power = HCI_TX_POWER_INVALID; |
2561 | hdev->max_le_tx_power = HCI_TX_POWER_INVALID; | |
bef64738 | 2562 | |
d6bfd59c | 2563 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2564 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2565 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2566 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
302975cb | 2567 | hdev->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT; |
58a96fc3 | 2568 | hdev->min_enc_key_size = HCI_MIN_ENC_KEY_SIZE; |
d6bfd59c | 2569 | |
10873f99 AM |
2570 | /* default 1.28 sec page scan */ |
2571 | hdev->def_page_scan_type = PAGE_SCAN_TYPE_STANDARD; | |
2572 | hdev->def_page_scan_int = 0x0800; | |
2573 | hdev->def_page_scan_window = 0x0012; | |
2574 | ||
b1b813d4 DR |
2575 | mutex_init(&hdev->lock); |
2576 | mutex_init(&hdev->req_lock); | |
2577 | ||
181a42ed ZX |
2578 | ida_init(&hdev->unset_handle_ida); |
2579 | ||
b338d917 | 2580 | INIT_LIST_HEAD(&hdev->mesh_pending); |
b1b813d4 | 2581 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
3d4f9c00 AP |
2582 | INIT_LIST_HEAD(&hdev->reject_list); |
2583 | INIT_LIST_HEAD(&hdev->accept_list); | |
b1b813d4 DR |
2584 | INIT_LIST_HEAD(&hdev->uuids); |
2585 | INIT_LIST_HEAD(&hdev->link_keys); | |
2586 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2587 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2588 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
3d4f9c00 | 2589 | INIT_LIST_HEAD(&hdev->le_accept_list); |
cfdb0c2d | 2590 | INIT_LIST_HEAD(&hdev->le_resolv_list); |
15819a70 | 2591 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2592 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2593 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2594 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 2595 | INIT_LIST_HEAD(&hdev->adv_instances); |
600a8749 | 2596 | INIT_LIST_HEAD(&hdev->blocked_keys); |
3368aa35 | 2597 | INIT_LIST_HEAD(&hdev->monitored_devices); |
b1b813d4 | 2598 | |
8961987f | 2599 | INIT_LIST_HEAD(&hdev->local_codecs); |
b1b813d4 DR |
2600 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
2601 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2602 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2603 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2604 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2605 | |
6a98e383 MH |
2606 | hci_cmd_sync_init(hdev); |
2607 | ||
b1b813d4 | 2608 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 2609 | |
b1b813d4 DR |
2610 | skb_queue_head_init(&hdev->rx_q); |
2611 | skb_queue_head_init(&hdev->cmd_q); | |
2612 | skb_queue_head_init(&hdev->raw_q); | |
2613 | ||
2614 | init_waitqueue_head(&hdev->req_wait_q); | |
2615 | ||
65cc2b49 | 2616 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
de75cd0d | 2617 | INIT_DELAYED_WORK(&hdev->ncmd_timer, hci_ncmd_timeout); |
b1b813d4 | 2618 | |
9695ef87 | 2619 | hci_devcd_setup(hdev); |
5fc16cc4 JH |
2620 | hci_request_setup(hdev); |
2621 | ||
b1b813d4 DR |
2622 | hci_init_sysfs(hdev); |
2623 | discovery_init(hdev); | |
9be0dab7 DR |
2624 | |
2625 | return hdev; | |
2626 | } | |
6ec56613 | 2627 | EXPORT_SYMBOL(hci_alloc_dev_priv); |
9be0dab7 DR |
2628 | |
2629 | /* Free HCI device */ | |
2630 | void hci_free_dev(struct hci_dev *hdev) | |
2631 | { | |
9be0dab7 DR |
2632 | /* will free via device release */ |
2633 | put_device(&hdev->dev); | |
2634 | } | |
2635 | EXPORT_SYMBOL(hci_free_dev); | |
2636 | ||
1da177e4 LT |
2637 | /* Register HCI device */ |
2638 | int hci_register_dev(struct hci_dev *hdev) | |
2639 | { | |
b1b813d4 | 2640 | int id, error; |
1da177e4 | 2641 | |
74292d5a | 2642 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
2643 | return -EINVAL; |
2644 | ||
08add513 MM |
2645 | /* Do not allow HCI_AMP devices to register at index 0, |
2646 | * so the index can be used as the AMP controller ID. | |
2647 | */ | |
3df92b31 | 2648 | switch (hdev->dev_type) { |
ca8bee5d | 2649 | case HCI_PRIMARY: |
9c16d0c8 | 2650 | id = ida_alloc_max(&hci_index_ida, HCI_MAX_ID - 1, GFP_KERNEL); |
3df92b31 SL |
2651 | break; |
2652 | case HCI_AMP: | |
9c16d0c8 CJ |
2653 | id = ida_alloc_range(&hci_index_ida, 1, HCI_MAX_ID - 1, |
2654 | GFP_KERNEL); | |
3df92b31 SL |
2655 | break; |
2656 | default: | |
2657 | return -EINVAL; | |
1da177e4 | 2658 | } |
8e87d142 | 2659 | |
3df92b31 SL |
2660 | if (id < 0) |
2661 | return id; | |
2662 | ||
dcda1657 LAD |
2663 | error = dev_set_name(&hdev->dev, "hci%u", id); |
2664 | if (error) | |
2665 | return error; | |
2666 | ||
2667 | hdev->name = dev_name(&hdev->dev); | |
1da177e4 | 2668 | hdev->id = id; |
2d8b3a11 AE |
2669 | |
2670 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2671 | ||
29e2dd0d | 2672 | hdev->workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, hdev->name); |
33ca954d DR |
2673 | if (!hdev->workqueue) { |
2674 | error = -ENOMEM; | |
2675 | goto err; | |
2676 | } | |
f48fd9c8 | 2677 | |
29e2dd0d TH |
2678 | hdev->req_workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, |
2679 | hdev->name); | |
6ead1bbc JH |
2680 | if (!hdev->req_workqueue) { |
2681 | destroy_workqueue(hdev->workqueue); | |
2682 | error = -ENOMEM; | |
2683 | goto err; | |
2684 | } | |
2685 | ||
0153e2ec MH |
2686 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
2687 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
2688 | ||
bdc3e0f1 | 2689 | error = device_add(&hdev->dev); |
33ca954d | 2690 | if (error < 0) |
54506918 | 2691 | goto err_wqueue; |
1da177e4 | 2692 | |
6d5d2ee6 HK |
2693 | hci_leds_init(hdev); |
2694 | ||
611b30f7 | 2695 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2696 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2697 | hdev); | |
611b30f7 MH |
2698 | if (hdev->rfkill) { |
2699 | if (rfkill_register(hdev->rfkill) < 0) { | |
2700 | rfkill_destroy(hdev->rfkill); | |
2701 | hdev->rfkill = NULL; | |
2702 | } | |
2703 | } | |
2704 | ||
5e130367 | 2705 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 2706 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 2707 | |
a1536da2 MH |
2708 | hci_dev_set_flag(hdev, HCI_SETUP); |
2709 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 2710 | |
ca8bee5d | 2711 | if (hdev->dev_type == HCI_PRIMARY) { |
56f87901 JH |
2712 | /* Assume BR/EDR support until proven otherwise (such as |
2713 | * through reading supported features during init. | |
2714 | */ | |
a1536da2 | 2715 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 2716 | } |
ce2be9ac | 2717 | |
fcee3377 GP |
2718 | write_lock(&hci_dev_list_lock); |
2719 | list_add(&hdev->list, &hci_dev_list); | |
2720 | write_unlock(&hci_dev_list_lock); | |
2721 | ||
4a964404 MH |
2722 | /* Devices that are marked for raw-only usage are unconfigured |
2723 | * and should not be included in normal operation. | |
fee746b0 MH |
2724 | */ |
2725 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 2726 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 2727 | |
fe92ee64 LAD |
2728 | /* Mark Remote Wakeup connection flag as supported if driver has wakeup |
2729 | * callback. | |
2730 | */ | |
2731 | if (hdev->wakeup) | |
e1cff700 | 2732 | hdev->conn_flags |= HCI_CONN_FLAG_REMOTE_WAKEUP; |
fe92ee64 | 2733 | |
05fcd4c4 | 2734 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 2735 | hci_dev_hold(hdev); |
1da177e4 | 2736 | |
91117864 DC |
2737 | error = hci_register_suspend_notifier(hdev); |
2738 | if (error) | |
0d75da38 | 2739 | BT_WARN("register suspend notifier failed error:%d\n", error); |
9952d90e | 2740 | |
19202573 | 2741 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2742 | |
e5e1e7fd | 2743 | idr_init(&hdev->adv_monitors_idr); |
5031ffcc | 2744 | msft_register(hdev); |
e5e1e7fd | 2745 | |
1da177e4 | 2746 | return id; |
f48fd9c8 | 2747 | |
33ca954d | 2748 | err_wqueue: |
5a4bb6a8 | 2749 | debugfs_remove_recursive(hdev->debugfs); |
33ca954d | 2750 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2751 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2752 | err: |
9c16d0c8 | 2753 | ida_free(&hci_index_ida, hdev->id); |
f48fd9c8 | 2754 | |
33ca954d | 2755 | return error; |
1da177e4 LT |
2756 | } |
2757 | EXPORT_SYMBOL(hci_register_dev); | |
2758 | ||
2759 | /* Unregister HCI device */ | |
59735631 | 2760 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2761 | { |
c13854ce | 2762 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2763 | |
1857c199 | 2764 | mutex_lock(&hdev->unregister_lock); |
a1536da2 | 2765 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
1857c199 | 2766 | mutex_unlock(&hdev->unregister_lock); |
94324962 | 2767 | |
f20d09d5 | 2768 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2769 | list_del(&hdev->list); |
f20d09d5 | 2770 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 2771 | |
e36bea6e VV |
2772 | cancel_work_sync(&hdev->power_on); |
2773 | ||
6a98e383 MH |
2774 | hci_cmd_sync_clear(hdev); |
2775 | ||
359ee4f8 | 2776 | hci_unregister_suspend_notifier(hdev); |
4e8c36c3 APS |
2777 | |
2778 | hci_dev_do_close(hdev); | |
9952d90e | 2779 | |
ab81cbf9 | 2780 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
2781 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
2782 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 2783 | hci_dev_lock(hdev); |
744cf19e | 2784 | mgmt_index_removed(hdev); |
09fd0de5 | 2785 | hci_dev_unlock(hdev); |
56e5cb86 | 2786 | } |
ab81cbf9 | 2787 | |
2e58ef3e JH |
2788 | /* mgmt_index_removed should take care of emptying the |
2789 | * pending list */ | |
2790 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2791 | ||
05fcd4c4 | 2792 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 2793 | |
611b30f7 MH |
2794 | if (hdev->rfkill) { |
2795 | rfkill_unregister(hdev->rfkill); | |
2796 | rfkill_destroy(hdev->rfkill); | |
2797 | } | |
2798 | ||
bdc3e0f1 | 2799 | device_del(&hdev->dev); |
e61fbee7 | 2800 | /* Actual cleanup is deferred until hci_release_dev(). */ |
e0448092 TH |
2801 | hci_dev_put(hdev); |
2802 | } | |
2803 | EXPORT_SYMBOL(hci_unregister_dev); | |
147e2d59 | 2804 | |
58ce6d5b TH |
2805 | /* Release HCI device */ |
2806 | void hci_release_dev(struct hci_dev *hdev) | |
e0448092 | 2807 | { |
0153e2ec | 2808 | debugfs_remove_recursive(hdev->debugfs); |
5177a838 MH |
2809 | kfree_const(hdev->hw_info); |
2810 | kfree_const(hdev->fw_info); | |
0153e2ec | 2811 | |
f48fd9c8 | 2812 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2813 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2814 | |
09fd0de5 | 2815 | hci_dev_lock(hdev); |
3d4f9c00 AP |
2816 | hci_bdaddr_list_clear(&hdev->reject_list); |
2817 | hci_bdaddr_list_clear(&hdev->accept_list); | |
2aeb9a1a | 2818 | hci_uuids_clear(hdev); |
55ed8ca1 | 2819 | hci_link_keys_clear(hdev); |
b899efaf | 2820 | hci_smp_ltks_clear(hdev); |
970c4e46 | 2821 | hci_smp_irks_clear(hdev); |
2763eda6 | 2822 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 2823 | hci_adv_instances_clear(hdev); |
e5e1e7fd | 2824 | hci_adv_monitors_clear(hdev); |
3d4f9c00 | 2825 | hci_bdaddr_list_clear(&hdev->le_accept_list); |
cfdb0c2d | 2826 | hci_bdaddr_list_clear(&hdev->le_resolv_list); |
373110c5 | 2827 | hci_conn_params_clear_all(hdev); |
22078800 | 2828 | hci_discovery_filter_clear(hdev); |
600a8749 | 2829 | hci_blocked_keys_clear(hdev); |
b938790e | 2830 | hci_codec_list_clear(&hdev->local_codecs); |
10f9f426 | 2831 | msft_release(hdev); |
09fd0de5 | 2832 | hci_dev_unlock(hdev); |
e2e0cacb | 2833 | |
181a42ed | 2834 | ida_destroy(&hdev->unset_handle_ida); |
9c16d0c8 | 2835 | ida_free(&hci_index_ida, hdev->id); |
dd3b1dc3 | 2836 | kfree_skb(hdev->sent_cmd); |
2615fd9a | 2837 | kfree_skb(hdev->req_skb); |
dfe6d5c3 | 2838 | kfree_skb(hdev->recv_event); |
58ce6d5b | 2839 | kfree(hdev); |
1da177e4 | 2840 | } |
58ce6d5b | 2841 | EXPORT_SYMBOL(hci_release_dev); |
1da177e4 | 2842 | |
359ee4f8 APS |
2843 | int hci_register_suspend_notifier(struct hci_dev *hdev) |
2844 | { | |
2845 | int ret = 0; | |
2846 | ||
b5ca3387 LAD |
2847 | if (!hdev->suspend_notifier.notifier_call && |
2848 | !test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) { | |
359ee4f8 APS |
2849 | hdev->suspend_notifier.notifier_call = hci_suspend_notifier; |
2850 | ret = register_pm_notifier(&hdev->suspend_notifier); | |
2851 | } | |
2852 | ||
2853 | return ret; | |
2854 | } | |
2855 | ||
2856 | int hci_unregister_suspend_notifier(struct hci_dev *hdev) | |
2857 | { | |
2858 | int ret = 0; | |
2859 | ||
b5ca3387 | 2860 | if (hdev->suspend_notifier.notifier_call) { |
359ee4f8 | 2861 | ret = unregister_pm_notifier(&hdev->suspend_notifier); |
b5ca3387 LAD |
2862 | if (!ret) |
2863 | hdev->suspend_notifier.notifier_call = NULL; | |
2864 | } | |
359ee4f8 APS |
2865 | |
2866 | return ret; | |
2867 | } | |
2868 | ||
63298d6e LAD |
2869 | /* Cancel ongoing command synchronously: |
2870 | * | |
2871 | * - Cancel command timer | |
2872 | * - Reset command counter | |
2873 | * - Cancel command request | |
2874 | */ | |
2875 | static void hci_cancel_cmd_sync(struct hci_dev *hdev, int err) | |
2876 | { | |
2877 | bt_dev_dbg(hdev, "err 0x%2.2x", err); | |
2878 | ||
2879 | cancel_delayed_work_sync(&hdev->cmd_timer); | |
2880 | cancel_delayed_work_sync(&hdev->ncmd_timer); | |
2881 | atomic_set(&hdev->cmd_cnt, 1); | |
2882 | ||
6946b9c9 | 2883 | hci_cmd_sync_cancel_sync(hdev, err); |
63298d6e LAD |
2884 | } |
2885 | ||
1da177e4 LT |
2886 | /* Suspend HCI device */ |
2887 | int hci_suspend_dev(struct hci_dev *hdev) | |
2888 | { | |
e1b77d68 | 2889 | int ret; |
e1b77d68 LAD |
2890 | |
2891 | bt_dev_dbg(hdev, ""); | |
2892 | ||
2893 | /* Suspend should only act on when powered. */ | |
2894 | if (!hdev_is_powered(hdev) || | |
2895 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2896 | return 0; | |
2897 | ||
182ee45d LAD |
2898 | /* If powering down don't attempt to suspend */ |
2899 | if (mgmt_powering_down(hdev)) | |
2900 | return 0; | |
4539ca67 | 2901 | |
f4198635 | 2902 | /* Cancel potentially blocking sync operation before suspend */ |
6946b9c9 | 2903 | hci_cancel_cmd_sync(hdev, EHOSTDOWN); |
f4198635 | 2904 | |
182ee45d LAD |
2905 | hci_req_sync_lock(hdev); |
2906 | ret = hci_suspend_sync(hdev); | |
2907 | hci_req_sync_unlock(hdev); | |
e1b77d68 LAD |
2908 | |
2909 | hci_clear_wake_reason(hdev); | |
182ee45d | 2910 | mgmt_suspending(hdev, hdev->suspend_state); |
e1b77d68 | 2911 | |
05fcd4c4 | 2912 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
e1b77d68 | 2913 | return ret; |
1da177e4 LT |
2914 | } |
2915 | EXPORT_SYMBOL(hci_suspend_dev); | |
2916 | ||
2917 | /* Resume HCI device */ | |
2918 | int hci_resume_dev(struct hci_dev *hdev) | |
2919 | { | |
e1b77d68 LAD |
2920 | int ret; |
2921 | ||
2922 | bt_dev_dbg(hdev, ""); | |
2923 | ||
2924 | /* Resume should only act on when powered. */ | |
2925 | if (!hdev_is_powered(hdev) || | |
2926 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2927 | return 0; | |
2928 | ||
2929 | /* If powering down don't attempt to resume */ | |
2930 | if (mgmt_powering_down(hdev)) | |
2931 | return 0; | |
2932 | ||
182ee45d LAD |
2933 | hci_req_sync_lock(hdev); |
2934 | ret = hci_resume_sync(hdev); | |
2935 | hci_req_sync_unlock(hdev); | |
e1b77d68 LAD |
2936 | |
2937 | mgmt_resuming(hdev, hdev->wake_reason, &hdev->wake_addr, | |
182ee45d | 2938 | hdev->wake_addr_type); |
e1b77d68 | 2939 | |
05fcd4c4 | 2940 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
e1b77d68 | 2941 | return ret; |
1da177e4 LT |
2942 | } |
2943 | EXPORT_SYMBOL(hci_resume_dev); | |
2944 | ||
75e0569f MH |
2945 | /* Reset HCI device */ |
2946 | int hci_reset_dev(struct hci_dev *hdev) | |
2947 | { | |
1e4b6e91 | 2948 | static const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; |
75e0569f MH |
2949 | struct sk_buff *skb; |
2950 | ||
2951 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
2952 | if (!skb) | |
2953 | return -ENOMEM; | |
2954 | ||
d79f34e3 | 2955 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
59ae1d12 | 2956 | skb_put_data(skb, hw_err, 3); |
75e0569f | 2957 | |
de75cd0d MM |
2958 | bt_dev_err(hdev, "Injecting HCI hardware error event"); |
2959 | ||
75e0569f MH |
2960 | /* Send Hardware Error to upper stack */ |
2961 | return hci_recv_frame(hdev, skb); | |
2962 | } | |
2963 | EXPORT_SYMBOL(hci_reset_dev); | |
2964 | ||
76bca880 | 2965 | /* Receive frame from HCI drivers */ |
e1a26170 | 2966 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 2967 | { |
76bca880 | 2968 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 2969 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2970 | kfree_skb(skb); |
2971 | return -ENXIO; | |
2972 | } | |
2973 | ||
876e7810 LAD |
2974 | switch (hci_skb_pkt_type(skb)) { |
2975 | case HCI_EVENT_PKT: | |
2976 | break; | |
2977 | case HCI_ACLDATA_PKT: | |
2978 | /* Detect if ISO packet has been sent as ACL */ | |
2979 | if (hci_conn_num(hdev, ISO_LINK)) { | |
2980 | __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle); | |
2981 | __u8 type; | |
2982 | ||
2983 | type = hci_conn_lookup_type(hdev, hci_handle(handle)); | |
2984 | if (type == ISO_LINK) | |
2985 | hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; | |
2986 | } | |
2987 | break; | |
2988 | case HCI_SCODATA_PKT: | |
2989 | break; | |
2990 | case HCI_ISODATA_PKT: | |
2991 | break; | |
2992 | default: | |
fe806dce MH |
2993 | kfree_skb(skb); |
2994 | return -EINVAL; | |
2995 | } | |
2996 | ||
d82603c6 | 2997 | /* Incoming skb */ |
76bca880 MH |
2998 | bt_cb(skb)->incoming = 1; |
2999 | ||
3000 | /* Time stamp */ | |
3001 | __net_timestamp(skb); | |
3002 | ||
76bca880 | 3003 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3004 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3005 | |
76bca880 MH |
3006 | return 0; |
3007 | } | |
3008 | EXPORT_SYMBOL(hci_recv_frame); | |
3009 | ||
e875ff84 MH |
3010 | /* Receive diagnostic message from HCI drivers */ |
3011 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3012 | { | |
581d6fd6 | 3013 | /* Mark as diagnostic packet */ |
d79f34e3 | 3014 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3015 | |
e875ff84 MH |
3016 | /* Time stamp */ |
3017 | __net_timestamp(skb); | |
3018 | ||
581d6fd6 MH |
3019 | skb_queue_tail(&hdev->rx_q, skb); |
3020 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3021 | |
e875ff84 MH |
3022 | return 0; |
3023 | } | |
3024 | EXPORT_SYMBOL(hci_recv_diag); | |
3025 | ||
5177a838 MH |
3026 | void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...) |
3027 | { | |
3028 | va_list vargs; | |
3029 | ||
3030 | va_start(vargs, fmt); | |
3031 | kfree_const(hdev->hw_info); | |
3032 | hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3033 | va_end(vargs); | |
3034 | } | |
3035 | EXPORT_SYMBOL(hci_set_hw_info); | |
3036 | ||
3037 | void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...) | |
3038 | { | |
3039 | va_list vargs; | |
3040 | ||
3041 | va_start(vargs, fmt); | |
3042 | kfree_const(hdev->fw_info); | |
3043 | hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3044 | va_end(vargs); | |
3045 | } | |
3046 | EXPORT_SYMBOL(hci_set_fw_info); | |
3047 | ||
1da177e4 LT |
3048 | /* ---- Interface to upper protocols ---- */ |
3049 | ||
1da177e4 LT |
3050 | int hci_register_cb(struct hci_cb *cb) |
3051 | { | |
3052 | BT_DBG("%p name %s", cb, cb->name); | |
3053 | ||
fba7ecf0 | 3054 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3055 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3056 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3057 | |
3058 | return 0; | |
3059 | } | |
3060 | EXPORT_SYMBOL(hci_register_cb); | |
3061 | ||
3062 | int hci_unregister_cb(struct hci_cb *cb) | |
3063 | { | |
3064 | BT_DBG("%p name %s", cb, cb->name); | |
3065 | ||
fba7ecf0 | 3066 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3067 | list_del(&cb->list); |
fba7ecf0 | 3068 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3069 | |
3070 | return 0; | |
3071 | } | |
3072 | EXPORT_SYMBOL(hci_unregister_cb); | |
3073 | ||
2250abad | 3074 | static int hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3075 | { |
cdc52faa MH |
3076 | int err; |
3077 | ||
d79f34e3 MH |
3078 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3079 | skb->len); | |
1da177e4 | 3080 | |
cd82e61c MH |
3081 | /* Time stamp */ |
3082 | __net_timestamp(skb); | |
1da177e4 | 3083 | |
cd82e61c MH |
3084 | /* Send copy to monitor */ |
3085 | hci_send_to_monitor(hdev, skb); | |
3086 | ||
3087 | if (atomic_read(&hdev->promisc)) { | |
3088 | /* Send copy to the sockets */ | |
470fe1b5 | 3089 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3090 | } |
3091 | ||
3092 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3093 | skb_orphan(skb); | |
3094 | ||
73d0d3c8 MH |
3095 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3096 | kfree_skb(skb); | |
2250abad | 3097 | return -EINVAL; |
73d0d3c8 MH |
3098 | } |
3099 | ||
cdc52faa MH |
3100 | err = hdev->send(hdev, skb); |
3101 | if (err < 0) { | |
2064ee33 | 3102 | bt_dev_err(hdev, "sending frame failed (%d)", err); |
cdc52faa | 3103 | kfree_skb(skb); |
2250abad | 3104 | return err; |
cdc52faa | 3105 | } |
2250abad BB |
3106 | |
3107 | return 0; | |
1da177e4 LT |
3108 | } |
3109 | ||
1ca3a9d0 | 3110 | /* Send HCI command */ |
07dc93dd JH |
3111 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3112 | const void *param) | |
1ca3a9d0 JH |
3113 | { |
3114 | struct sk_buff *skb; | |
3115 | ||
3116 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3117 | ||
3118 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3119 | if (!skb) { | |
2064ee33 | 3120 | bt_dev_err(hdev, "no memory for command"); |
1ca3a9d0 JH |
3121 | return -ENOMEM; |
3122 | } | |
3123 | ||
49c922bb | 3124 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3125 | * single-command requests. |
3126 | */ | |
44d27137 | 3127 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3128 | |
1da177e4 | 3129 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3130 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3131 | |
3132 | return 0; | |
3133 | } | |
1da177e4 | 3134 | |
d6ee6ad7 LP |
3135 | int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, |
3136 | const void *param) | |
3137 | { | |
3138 | struct sk_buff *skb; | |
3139 | ||
3140 | if (hci_opcode_ogf(opcode) != 0x3f) { | |
3141 | /* A controller receiving a command shall respond with either | |
3142 | * a Command Status Event or a Command Complete Event. | |
3143 | * Therefore, all standard HCI commands must be sent via the | |
3144 | * standard API, using hci_send_cmd or hci_cmd_sync helpers. | |
3145 | * Some vendors do not comply with this rule for vendor-specific | |
3146 | * commands and do not return any event. We want to support | |
3147 | * unresponded commands for such cases only. | |
3148 | */ | |
3149 | bt_dev_err(hdev, "unresponded command not supported"); | |
3150 | return -EINVAL; | |
3151 | } | |
3152 | ||
3153 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3154 | if (!skb) { | |
3155 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", | |
3156 | opcode); | |
3157 | return -ENOMEM; | |
3158 | } | |
3159 | ||
3160 | hci_send_frame(hdev, skb); | |
3161 | ||
3162 | return 0; | |
3163 | } | |
3164 | EXPORT_SYMBOL(__hci_cmd_send); | |
3165 | ||
1da177e4 | 3166 | /* Get data from the previously sent command */ |
2615fd9a | 3167 | static void *hci_cmd_data(struct sk_buff *skb, __u16 opcode) |
1da177e4 LT |
3168 | { |
3169 | struct hci_command_hdr *hdr; | |
3170 | ||
2615fd9a | 3171 | if (!skb || skb->len < HCI_COMMAND_HDR_SIZE) |
1da177e4 LT |
3172 | return NULL; |
3173 | ||
2615fd9a | 3174 | hdr = (void *)skb->data; |
1da177e4 | 3175 | |
a9de9248 | 3176 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3177 | return NULL; |
3178 | ||
2615fd9a LAD |
3179 | return skb->data + HCI_COMMAND_HDR_SIZE; |
3180 | } | |
1da177e4 | 3181 | |
2615fd9a LAD |
3182 | /* Get data from the previously sent command */ |
3183 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) | |
3184 | { | |
3185 | void *data; | |
3186 | ||
3187 | /* Check if opcode matches last sent command */ | |
3188 | data = hci_cmd_data(hdev->sent_cmd, opcode); | |
3189 | if (!data) | |
3190 | /* Check if opcode matches last request */ | |
3191 | data = hci_cmd_data(hdev->req_skb, opcode); | |
3192 | ||
3193 | return data; | |
1da177e4 LT |
3194 | } |
3195 | ||
dfe6d5c3 LAD |
3196 | /* Get data from last received event */ |
3197 | void *hci_recv_event_data(struct hci_dev *hdev, __u8 event) | |
3198 | { | |
3199 | struct hci_event_hdr *hdr; | |
3200 | int offset; | |
3201 | ||
3202 | if (!hdev->recv_event) | |
3203 | return NULL; | |
3204 | ||
3205 | hdr = (void *)hdev->recv_event->data; | |
3206 | offset = sizeof(*hdr); | |
3207 | ||
3208 | if (hdr->evt != event) { | |
3209 | /* In case of LE metaevent check the subevent match */ | |
3210 | if (hdr->evt == HCI_EV_LE_META) { | |
3211 | struct hci_ev_le_meta *ev; | |
3212 | ||
3213 | ev = (void *)hdev->recv_event->data + offset; | |
3214 | offset += sizeof(*ev); | |
3215 | if (ev->subevent == event) | |
3216 | goto found; | |
3217 | } | |
3218 | return NULL; | |
3219 | } | |
3220 | ||
3221 | found: | |
3222 | bt_dev_dbg(hdev, "event 0x%2.2x", event); | |
3223 | ||
3224 | return hdev->recv_event->data + offset; | |
3225 | } | |
3226 | ||
1da177e4 LT |
3227 | /* Send ACL data */ |
3228 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3229 | { | |
3230 | struct hci_acl_hdr *hdr; | |
3231 | int len = skb->len; | |
3232 | ||
badff6d0 ACM |
3233 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3234 | skb_reset_transport_header(skb); | |
9c70220b | 3235 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3236 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3237 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3238 | } |
3239 | ||
ee22be7e | 3240 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3241 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3242 | { |
ee22be7e | 3243 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3244 | struct hci_dev *hdev = conn->hdev; |
3245 | struct sk_buff *list; | |
3246 | ||
087bfd99 GP |
3247 | skb->len = skb_headlen(skb); |
3248 | skb->data_len = 0; | |
3249 | ||
d79f34e3 | 3250 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3251 | |
3252 | switch (hdev->dev_type) { | |
ca8bee5d | 3253 | case HCI_PRIMARY: |
204a6e54 AE |
3254 | hci_add_acl_hdr(skb, conn->handle, flags); |
3255 | break; | |
3256 | case HCI_AMP: | |
3257 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3258 | break; | |
3259 | default: | |
2064ee33 | 3260 | bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); |
204a6e54 AE |
3261 | return; |
3262 | } | |
087bfd99 | 3263 | |
70f23020 AE |
3264 | list = skb_shinfo(skb)->frag_list; |
3265 | if (!list) { | |
1da177e4 LT |
3266 | /* Non fragmented */ |
3267 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3268 | ||
73d80deb | 3269 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3270 | } else { |
3271 | /* Fragmented */ | |
3272 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3273 | ||
3274 | skb_shinfo(skb)->frag_list = NULL; | |
3275 | ||
9cfd5a23 JR |
3276 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3277 | * here because of 6LoWPAN links, as there this function is | |
3278 | * called from softirq and using normal spin lock could cause | |
3279 | * deadlocks. | |
3280 | */ | |
3281 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3282 | |
73d80deb | 3283 | __skb_queue_tail(queue, skb); |
e702112f AE |
3284 | |
3285 | flags &= ~ACL_START; | |
3286 | flags |= ACL_CONT; | |
1da177e4 LT |
3287 | do { |
3288 | skb = list; list = list->next; | |
8e87d142 | 3289 | |
d79f34e3 | 3290 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3291 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3292 | |
3293 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3294 | ||
73d80deb | 3295 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3296 | } while (list); |
3297 | ||
9cfd5a23 | 3298 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3299 | } |
73d80deb LAD |
3300 | } |
3301 | ||
3302 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3303 | { | |
ee22be7e | 3304 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3305 | |
f0e09510 | 3306 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3307 | |
ee22be7e | 3308 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3309 | |
3eff45ea | 3310 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3311 | } |
1da177e4 LT |
3312 | |
3313 | /* Send SCO data */ | |
0d861d8b | 3314 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3315 | { |
3316 | struct hci_dev *hdev = conn->hdev; | |
3317 | struct hci_sco_hdr hdr; | |
3318 | ||
3319 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3320 | ||
aca3192c | 3321 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3322 | hdr.dlen = skb->len; |
3323 | ||
badff6d0 ACM |
3324 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3325 | skb_reset_transport_header(skb); | |
9c70220b | 3326 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3327 | |
d79f34e3 | 3328 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3329 | |
1da177e4 | 3330 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3331 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3332 | } |
1da177e4 | 3333 | |
26afbd82 LAD |
3334 | /* Send ISO data */ |
3335 | static void hci_add_iso_hdr(struct sk_buff *skb, __u16 handle, __u8 flags) | |
3336 | { | |
3337 | struct hci_iso_hdr *hdr; | |
3338 | int len = skb->len; | |
3339 | ||
3340 | skb_push(skb, HCI_ISO_HDR_SIZE); | |
3341 | skb_reset_transport_header(skb); | |
3342 | hdr = (struct hci_iso_hdr *)skb_transport_header(skb); | |
3343 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); | |
3344 | hdr->dlen = cpu_to_le16(len); | |
3345 | } | |
3346 | ||
3347 | static void hci_queue_iso(struct hci_conn *conn, struct sk_buff_head *queue, | |
3348 | struct sk_buff *skb) | |
3349 | { | |
3350 | struct hci_dev *hdev = conn->hdev; | |
3351 | struct sk_buff *list; | |
3352 | __u16 flags; | |
3353 | ||
3354 | skb->len = skb_headlen(skb); | |
3355 | skb->data_len = 0; | |
3356 | ||
3357 | hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; | |
3358 | ||
3359 | list = skb_shinfo(skb)->frag_list; | |
3360 | ||
3361 | flags = hci_iso_flags_pack(list ? ISO_START : ISO_SINGLE, 0x00); | |
3362 | hci_add_iso_hdr(skb, conn->handle, flags); | |
3363 | ||
3364 | if (!list) { | |
3365 | /* Non fragmented */ | |
3366 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3367 | ||
3368 | skb_queue_tail(queue, skb); | |
3369 | } else { | |
3370 | /* Fragmented */ | |
3371 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3372 | ||
3373 | skb_shinfo(skb)->frag_list = NULL; | |
3374 | ||
3375 | __skb_queue_tail(queue, skb); | |
3376 | ||
3377 | do { | |
3378 | skb = list; list = list->next; | |
3379 | ||
3380 | hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; | |
3381 | flags = hci_iso_flags_pack(list ? ISO_CONT : ISO_END, | |
3382 | 0x00); | |
3383 | hci_add_iso_hdr(skb, conn->handle, flags); | |
3384 | ||
3385 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3386 | ||
3387 | __skb_queue_tail(queue, skb); | |
3388 | } while (list); | |
3389 | } | |
3390 | } | |
3391 | ||
3392 | void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb) | |
3393 | { | |
3394 | struct hci_dev *hdev = conn->hdev; | |
3395 | ||
3396 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3397 | ||
3398 | hci_queue_iso(conn, &conn->data_q, skb); | |
3399 | ||
3400 | queue_work(hdev->workqueue, &hdev->tx_work); | |
3401 | } | |
3402 | ||
1da177e4 LT |
3403 | /* ---- HCI TX task (outgoing data) ---- */ |
3404 | ||
3405 | /* HCI Connection scheduler */ | |
26afbd82 LAD |
3406 | static inline void hci_quote_sent(struct hci_conn *conn, int num, int *quote) |
3407 | { | |
3408 | struct hci_dev *hdev; | |
3409 | int cnt, q; | |
3410 | ||
3411 | if (!conn) { | |
3412 | *quote = 0; | |
3413 | return; | |
3414 | } | |
3415 | ||
3416 | hdev = conn->hdev; | |
3417 | ||
3418 | switch (conn->type) { | |
3419 | case ACL_LINK: | |
3420 | cnt = hdev->acl_cnt; | |
3421 | break; | |
3422 | case AMP_LINK: | |
3423 | cnt = hdev->block_cnt; | |
3424 | break; | |
3425 | case SCO_LINK: | |
3426 | case ESCO_LINK: | |
3427 | cnt = hdev->sco_cnt; | |
3428 | break; | |
3429 | case LE_LINK: | |
3430 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3431 | break; | |
3432 | case ISO_LINK: | |
3433 | cnt = hdev->iso_mtu ? hdev->iso_cnt : | |
3434 | hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3435 | break; | |
3436 | default: | |
3437 | cnt = 0; | |
3438 | bt_dev_err(hdev, "unknown link type %d", conn->type); | |
3439 | } | |
3440 | ||
3441 | q = cnt / num; | |
3442 | *quote = q ? q : 1; | |
3443 | } | |
3444 | ||
6039aa73 GP |
3445 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3446 | int *quote) | |
1da177e4 LT |
3447 | { |
3448 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3449 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3450 | unsigned int num = 0, min = ~0; |
1da177e4 | 3451 | |
8e87d142 | 3452 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3453 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3454 | |
3455 | rcu_read_lock(); | |
3456 | ||
3457 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3458 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3459 | continue; |
769be974 MH |
3460 | |
3461 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3462 | continue; | |
3463 | ||
1da177e4 LT |
3464 | num++; |
3465 | ||
3466 | if (c->sent < min) { | |
3467 | min = c->sent; | |
3468 | conn = c; | |
3469 | } | |
52087a79 LAD |
3470 | |
3471 | if (hci_conn_num(hdev, type) == num) | |
3472 | break; | |
1da177e4 LT |
3473 | } |
3474 | ||
bf4c6325 GP |
3475 | rcu_read_unlock(); |
3476 | ||
26afbd82 | 3477 | hci_quote_sent(conn, num, quote); |
1da177e4 LT |
3478 | |
3479 | BT_DBG("conn %p quote %d", conn, *quote); | |
3480 | return conn; | |
3481 | } | |
3482 | ||
6039aa73 | 3483 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3484 | { |
3485 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3486 | struct hci_conn *c; |
1da177e4 | 3487 | |
2064ee33 | 3488 | bt_dev_err(hdev, "link tx timeout"); |
1da177e4 | 3489 | |
bf4c6325 GP |
3490 | rcu_read_lock(); |
3491 | ||
1da177e4 | 3492 | /* Kill stalled connections */ |
bf4c6325 | 3493 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3494 | if (c->type == type && c->sent) { |
2064ee33 MH |
3495 | bt_dev_err(hdev, "killing stalled connection %pMR", |
3496 | &c->dst); | |
c7eaf80b YH |
3497 | /* hci_disconnect might sleep, so, we have to release |
3498 | * the RCU read lock before calling it. | |
3499 | */ | |
3500 | rcu_read_unlock(); | |
bed71748 | 3501 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
c7eaf80b | 3502 | rcu_read_lock(); |
1da177e4 LT |
3503 | } |
3504 | } | |
bf4c6325 GP |
3505 | |
3506 | rcu_read_unlock(); | |
1da177e4 LT |
3507 | } |
3508 | ||
6039aa73 GP |
3509 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3510 | int *quote) | |
1da177e4 | 3511 | { |
73d80deb LAD |
3512 | struct hci_conn_hash *h = &hdev->conn_hash; |
3513 | struct hci_chan *chan = NULL; | |
abc5de8f | 3514 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3515 | struct hci_conn *conn; |
26afbd82 | 3516 | int conn_num = 0; |
73d80deb LAD |
3517 | |
3518 | BT_DBG("%s", hdev->name); | |
3519 | ||
bf4c6325 GP |
3520 | rcu_read_lock(); |
3521 | ||
3522 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3523 | struct hci_chan *tmp; |
3524 | ||
3525 | if (conn->type != type) | |
3526 | continue; | |
3527 | ||
3528 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3529 | continue; | |
3530 | ||
3531 | conn_num++; | |
3532 | ||
8192edef | 3533 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3534 | struct sk_buff *skb; |
3535 | ||
3536 | if (skb_queue_empty(&tmp->data_q)) | |
3537 | continue; | |
3538 | ||
3539 | skb = skb_peek(&tmp->data_q); | |
3540 | if (skb->priority < cur_prio) | |
3541 | continue; | |
3542 | ||
3543 | if (skb->priority > cur_prio) { | |
3544 | num = 0; | |
3545 | min = ~0; | |
3546 | cur_prio = skb->priority; | |
3547 | } | |
3548 | ||
3549 | num++; | |
3550 | ||
3551 | if (conn->sent < min) { | |
3552 | min = conn->sent; | |
3553 | chan = tmp; | |
3554 | } | |
3555 | } | |
3556 | ||
3557 | if (hci_conn_num(hdev, type) == conn_num) | |
3558 | break; | |
3559 | } | |
3560 | ||
bf4c6325 GP |
3561 | rcu_read_unlock(); |
3562 | ||
73d80deb LAD |
3563 | if (!chan) |
3564 | return NULL; | |
3565 | ||
26afbd82 | 3566 | hci_quote_sent(chan->conn, num, quote); |
73d80deb | 3567 | |
73d80deb LAD |
3568 | BT_DBG("chan %p quote %d", chan, *quote); |
3569 | return chan; | |
3570 | } | |
3571 | ||
02b20f0b LAD |
3572 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3573 | { | |
3574 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3575 | struct hci_conn *conn; | |
3576 | int num = 0; | |
3577 | ||
3578 | BT_DBG("%s", hdev->name); | |
3579 | ||
bf4c6325 GP |
3580 | rcu_read_lock(); |
3581 | ||
3582 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3583 | struct hci_chan *chan; |
3584 | ||
3585 | if (conn->type != type) | |
3586 | continue; | |
3587 | ||
3588 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3589 | continue; | |
3590 | ||
3591 | num++; | |
3592 | ||
8192edef | 3593 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3594 | struct sk_buff *skb; |
3595 | ||
3596 | if (chan->sent) { | |
3597 | chan->sent = 0; | |
3598 | continue; | |
3599 | } | |
3600 | ||
3601 | if (skb_queue_empty(&chan->data_q)) | |
3602 | continue; | |
3603 | ||
3604 | skb = skb_peek(&chan->data_q); | |
3605 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3606 | continue; | |
3607 | ||
3608 | skb->priority = HCI_PRIO_MAX - 1; | |
3609 | ||
3610 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3611 | skb->priority); |
02b20f0b LAD |
3612 | } |
3613 | ||
3614 | if (hci_conn_num(hdev, type) == num) | |
3615 | break; | |
3616 | } | |
bf4c6325 GP |
3617 | |
3618 | rcu_read_unlock(); | |
3619 | ||
02b20f0b LAD |
3620 | } |
3621 | ||
b71d385a AE |
3622 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3623 | { | |
3624 | /* Calculate count of blocks used by this packet */ | |
3625 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3626 | } | |
3627 | ||
116523c8 | 3628 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt, u8 type) |
73d80deb | 3629 | { |
116523c8 LAD |
3630 | unsigned long last_tx; |
3631 | ||
3632 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) | |
3633 | return; | |
3634 | ||
3635 | switch (type) { | |
3636 | case LE_LINK: | |
3637 | last_tx = hdev->le_last_tx; | |
3638 | break; | |
3639 | default: | |
3640 | last_tx = hdev->acl_last_tx; | |
3641 | break; | |
1da177e4 | 3642 | } |
116523c8 LAD |
3643 | |
3644 | /* tx timeout must be longer than maximum link supervision timeout | |
3645 | * (40.9 seconds) | |
3646 | */ | |
3647 | if (!cnt && time_after(jiffies, last_tx + HCI_ACL_TX_TIMEOUT)) | |
3648 | hci_link_tx_to(hdev, type); | |
63d2bc1b | 3649 | } |
1da177e4 | 3650 | |
7fedd3bb APS |
3651 | /* Schedule SCO */ |
3652 | static void hci_sched_sco(struct hci_dev *hdev) | |
3653 | { | |
3654 | struct hci_conn *conn; | |
3655 | struct sk_buff *skb; | |
3656 | int quote; | |
3657 | ||
3658 | BT_DBG("%s", hdev->name); | |
3659 | ||
3660 | if (!hci_conn_num(hdev, SCO_LINK)) | |
3661 | return; | |
3662 | ||
3663 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { | |
3664 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3665 | BT_DBG("skb %p len %d", skb, skb->len); | |
3666 | hci_send_frame(hdev, skb); | |
3667 | ||
3668 | conn->sent++; | |
3669 | if (conn->sent == ~0) | |
3670 | conn->sent = 0; | |
3671 | } | |
3672 | } | |
3673 | } | |
3674 | ||
3675 | static void hci_sched_esco(struct hci_dev *hdev) | |
3676 | { | |
3677 | struct hci_conn *conn; | |
3678 | struct sk_buff *skb; | |
3679 | int quote; | |
3680 | ||
3681 | BT_DBG("%s", hdev->name); | |
3682 | ||
3683 | if (!hci_conn_num(hdev, ESCO_LINK)) | |
3684 | return; | |
3685 | ||
3686 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, | |
3687 | "e))) { | |
3688 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3689 | BT_DBG("skb %p len %d", skb, skb->len); | |
3690 | hci_send_frame(hdev, skb); | |
3691 | ||
3692 | conn->sent++; | |
3693 | if (conn->sent == ~0) | |
3694 | conn->sent = 0; | |
3695 | } | |
3696 | } | |
3697 | } | |
3698 | ||
6039aa73 | 3699 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3700 | { |
3701 | unsigned int cnt = hdev->acl_cnt; | |
3702 | struct hci_chan *chan; | |
3703 | struct sk_buff *skb; | |
3704 | int quote; | |
3705 | ||
116523c8 | 3706 | __check_timeout(hdev, cnt, ACL_LINK); |
04837f64 | 3707 | |
73d80deb | 3708 | while (hdev->acl_cnt && |
a8c5fb1a | 3709 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3710 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3711 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3712 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3713 | skb->len, skb->priority); |
73d80deb | 3714 | |
ec1cce24 LAD |
3715 | /* Stop if priority has changed */ |
3716 | if (skb->priority < priority) | |
3717 | break; | |
3718 | ||
3719 | skb = skb_dequeue(&chan->data_q); | |
3720 | ||
73d80deb | 3721 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3722 | bt_cb(skb)->force_active); |
04837f64 | 3723 | |
57d17d70 | 3724 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3725 | hdev->acl_last_tx = jiffies; |
3726 | ||
3727 | hdev->acl_cnt--; | |
73d80deb LAD |
3728 | chan->sent++; |
3729 | chan->conn->sent++; | |
7fedd3bb APS |
3730 | |
3731 | /* Send pending SCO packets right away */ | |
3732 | hci_sched_sco(hdev); | |
3733 | hci_sched_esco(hdev); | |
1da177e4 LT |
3734 | } |
3735 | } | |
02b20f0b LAD |
3736 | |
3737 | if (cnt != hdev->acl_cnt) | |
3738 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3739 | } |
3740 | ||
6039aa73 | 3741 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3742 | { |
63d2bc1b | 3743 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3744 | struct hci_chan *chan; |
3745 | struct sk_buff *skb; | |
3746 | int quote; | |
bd1eb66b | 3747 | u8 type; |
b71d385a | 3748 | |
bd1eb66b AE |
3749 | BT_DBG("%s", hdev->name); |
3750 | ||
3751 | if (hdev->dev_type == HCI_AMP) | |
3752 | type = AMP_LINK; | |
3753 | else | |
3754 | type = ACL_LINK; | |
3755 | ||
116523c8 LAD |
3756 | __check_timeout(hdev, cnt, type); |
3757 | ||
b71d385a | 3758 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3759 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3760 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3761 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3762 | int blocks; | |
3763 | ||
3764 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3765 | skb->len, skb->priority); |
b71d385a AE |
3766 | |
3767 | /* Stop if priority has changed */ | |
3768 | if (skb->priority < priority) | |
3769 | break; | |
3770 | ||
3771 | skb = skb_dequeue(&chan->data_q); | |
3772 | ||
3773 | blocks = __get_blocks(hdev, skb); | |
3774 | if (blocks > hdev->block_cnt) | |
3775 | return; | |
3776 | ||
3777 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3778 | bt_cb(skb)->force_active); |
b71d385a | 3779 | |
57d17d70 | 3780 | hci_send_frame(hdev, skb); |
b71d385a AE |
3781 | hdev->acl_last_tx = jiffies; |
3782 | ||
3783 | hdev->block_cnt -= blocks; | |
3784 | quote -= blocks; | |
3785 | ||
3786 | chan->sent += blocks; | |
3787 | chan->conn->sent += blocks; | |
3788 | } | |
3789 | } | |
3790 | ||
3791 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3792 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3793 | } |
3794 | ||
6039aa73 | 3795 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3796 | { |
3797 | BT_DBG("%s", hdev->name); | |
3798 | ||
bd1eb66b | 3799 | /* No ACL link over BR/EDR controller */ |
ca8bee5d | 3800 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY) |
bd1eb66b AE |
3801 | return; |
3802 | ||
3803 | /* No AMP link over AMP controller */ | |
3804 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3805 | return; |
3806 | ||
3807 | switch (hdev->flow_ctl_mode) { | |
3808 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3809 | hci_sched_acl_pkt(hdev); | |
3810 | break; | |
3811 | ||
3812 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3813 | hci_sched_acl_blk(hdev); | |
3814 | break; | |
3815 | } | |
3816 | } | |
3817 | ||
6039aa73 | 3818 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3819 | { |
73d80deb | 3820 | struct hci_chan *chan; |
6ed58ec5 | 3821 | struct sk_buff *skb; |
02b20f0b | 3822 | int quote, cnt, tmp; |
6ed58ec5 VT |
3823 | |
3824 | BT_DBG("%s", hdev->name); | |
3825 | ||
52087a79 LAD |
3826 | if (!hci_conn_num(hdev, LE_LINK)) |
3827 | return; | |
3828 | ||
6ed58ec5 | 3829 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
1b1d29e5 | 3830 | |
116523c8 | 3831 | __check_timeout(hdev, cnt, LE_LINK); |
1b1d29e5 | 3832 | |
02b20f0b | 3833 | tmp = cnt; |
73d80deb | 3834 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3835 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3836 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3837 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3838 | skb->len, skb->priority); |
6ed58ec5 | 3839 | |
ec1cce24 LAD |
3840 | /* Stop if priority has changed */ |
3841 | if (skb->priority < priority) | |
3842 | break; | |
3843 | ||
3844 | skb = skb_dequeue(&chan->data_q); | |
3845 | ||
57d17d70 | 3846 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3847 | hdev->le_last_tx = jiffies; |
3848 | ||
3849 | cnt--; | |
73d80deb LAD |
3850 | chan->sent++; |
3851 | chan->conn->sent++; | |
7fedd3bb APS |
3852 | |
3853 | /* Send pending SCO packets right away */ | |
3854 | hci_sched_sco(hdev); | |
3855 | hci_sched_esco(hdev); | |
6ed58ec5 VT |
3856 | } |
3857 | } | |
73d80deb | 3858 | |
6ed58ec5 VT |
3859 | if (hdev->le_pkts) |
3860 | hdev->le_cnt = cnt; | |
3861 | else | |
3862 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3863 | |
3864 | if (cnt != tmp) | |
3865 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3866 | } |
3867 | ||
26afbd82 LAD |
3868 | /* Schedule CIS */ |
3869 | static void hci_sched_iso(struct hci_dev *hdev) | |
3870 | { | |
3871 | struct hci_conn *conn; | |
3872 | struct sk_buff *skb; | |
3873 | int quote, *cnt; | |
3874 | ||
3875 | BT_DBG("%s", hdev->name); | |
3876 | ||
3877 | if (!hci_conn_num(hdev, ISO_LINK)) | |
3878 | return; | |
3879 | ||
3880 | cnt = hdev->iso_pkts ? &hdev->iso_cnt : | |
3881 | hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt; | |
3882 | while (*cnt && (conn = hci_low_sent(hdev, ISO_LINK, "e))) { | |
3883 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3884 | BT_DBG("skb %p len %d", skb, skb->len); | |
3885 | hci_send_frame(hdev, skb); | |
3886 | ||
3887 | conn->sent++; | |
3888 | if (conn->sent == ~0) | |
3889 | conn->sent = 0; | |
3890 | (*cnt)--; | |
3891 | } | |
3892 | } | |
3893 | } | |
3894 | ||
3eff45ea | 3895 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3896 | { |
3eff45ea | 3897 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3898 | struct sk_buff *skb; |
3899 | ||
26afbd82 LAD |
3900 | BT_DBG("%s acl %d sco %d le %d iso %d", hdev->name, hdev->acl_cnt, |
3901 | hdev->sco_cnt, hdev->le_cnt, hdev->iso_cnt); | |
1da177e4 | 3902 | |
d7a5a11d | 3903 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e | 3904 | /* Schedule queues and send stuff to HCI driver */ |
52de599e MH |
3905 | hci_sched_sco(hdev); |
3906 | hci_sched_esco(hdev); | |
26afbd82 | 3907 | hci_sched_iso(hdev); |
7fedd3bb | 3908 | hci_sched_acl(hdev); |
52de599e MH |
3909 | hci_sched_le(hdev); |
3910 | } | |
6ed58ec5 | 3911 | |
1da177e4 LT |
3912 | /* Send next queued raw (unknown type) packet */ |
3913 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3914 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3915 | } |
3916 | ||
25985edc | 3917 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3918 | |
3919 | /* ACL data packet */ | |
6039aa73 | 3920 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3921 | { |
3922 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3923 | struct hci_conn *conn; | |
3924 | __u16 handle, flags; | |
3925 | ||
3926 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3927 | ||
3928 | handle = __le16_to_cpu(hdr->handle); | |
3929 | flags = hci_flags(handle); | |
3930 | handle = hci_handle(handle); | |
3931 | ||
f0e09510 | 3932 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3933 | handle, flags); |
1da177e4 LT |
3934 | |
3935 | hdev->stat.acl_rx++; | |
3936 | ||
3937 | hci_dev_lock(hdev); | |
3938 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3939 | hci_dev_unlock(hdev); | |
8e87d142 | 3940 | |
1da177e4 | 3941 | if (conn) { |
65983fc7 | 3942 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3943 | |
1da177e4 | 3944 | /* Send to upper protocol */ |
686ebf28 UF |
3945 | l2cap_recv_acldata(conn, skb, flags); |
3946 | return; | |
1da177e4 | 3947 | } else { |
2064ee33 MH |
3948 | bt_dev_err(hdev, "ACL packet for unknown connection handle %d", |
3949 | handle); | |
1da177e4 LT |
3950 | } |
3951 | ||
3952 | kfree_skb(skb); | |
3953 | } | |
3954 | ||
3955 | /* SCO data packet */ | |
6039aa73 | 3956 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3957 | { |
3958 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3959 | struct hci_conn *conn; | |
debdedf2 | 3960 | __u16 handle, flags; |
1da177e4 LT |
3961 | |
3962 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3963 | ||
3964 | handle = __le16_to_cpu(hdr->handle); | |
debdedf2 MH |
3965 | flags = hci_flags(handle); |
3966 | handle = hci_handle(handle); | |
1da177e4 | 3967 | |
debdedf2 MH |
3968 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
3969 | handle, flags); | |
1da177e4 LT |
3970 | |
3971 | hdev->stat.sco_rx++; | |
3972 | ||
3973 | hci_dev_lock(hdev); | |
3974 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3975 | hci_dev_unlock(hdev); | |
3976 | ||
3977 | if (conn) { | |
1da177e4 | 3978 | /* Send to upper protocol */ |
3f19ffb2 | 3979 | hci_skb_pkt_status(skb) = flags & 0x03; |
686ebf28 UF |
3980 | sco_recv_scodata(conn, skb); |
3981 | return; | |
1da177e4 | 3982 | } else { |
2d4b37b6 LAD |
3983 | bt_dev_err_ratelimited(hdev, "SCO packet for unknown connection handle %d", |
3984 | handle); | |
1da177e4 LT |
3985 | } |
3986 | ||
3987 | kfree_skb(skb); | |
3988 | } | |
3989 | ||
26afbd82 LAD |
3990 | static void hci_isodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
3991 | { | |
3992 | struct hci_iso_hdr *hdr; | |
3993 | struct hci_conn *conn; | |
3994 | __u16 handle, flags; | |
3995 | ||
3996 | hdr = skb_pull_data(skb, sizeof(*hdr)); | |
3997 | if (!hdr) { | |
3998 | bt_dev_err(hdev, "ISO packet too small"); | |
3999 | goto drop; | |
4000 | } | |
4001 | ||
4002 | handle = __le16_to_cpu(hdr->handle); | |
4003 | flags = hci_flags(handle); | |
4004 | handle = hci_handle(handle); | |
4005 | ||
4006 | bt_dev_dbg(hdev, "len %d handle 0x%4.4x flags 0x%4.4x", skb->len, | |
4007 | handle, flags); | |
4008 | ||
4009 | hci_dev_lock(hdev); | |
4010 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4011 | hci_dev_unlock(hdev); | |
4012 | ||
26afbd82 LAD |
4013 | if (!conn) { |
4014 | bt_dev_err(hdev, "ISO packet for unknown connection handle %d", | |
4015 | handle); | |
ccf74f23 | 4016 | goto drop; |
26afbd82 LAD |
4017 | } |
4018 | ||
ccf74f23 LAD |
4019 | /* Send to upper protocol */ |
4020 | iso_recv(conn, skb, flags); | |
4021 | return; | |
4022 | ||
26afbd82 LAD |
4023 | drop: |
4024 | kfree_skb(skb); | |
4025 | } | |
4026 | ||
9238f36a JH |
4027 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4028 | { | |
4029 | struct sk_buff *skb; | |
4030 | ||
4031 | skb = skb_peek(&hdev->cmd_q); | |
4032 | if (!skb) | |
4033 | return true; | |
4034 | ||
44d27137 | 4035 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4036 | } |
4037 | ||
42c6b129 JH |
4038 | static void hci_resend_last(struct hci_dev *hdev) |
4039 | { | |
4040 | struct hci_command_hdr *sent; | |
4041 | struct sk_buff *skb; | |
4042 | u16 opcode; | |
4043 | ||
4044 | if (!hdev->sent_cmd) | |
4045 | return; | |
4046 | ||
4047 | sent = (void *) hdev->sent_cmd->data; | |
4048 | opcode = __le16_to_cpu(sent->opcode); | |
4049 | if (opcode == HCI_OP_RESET) | |
4050 | return; | |
4051 | ||
4052 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4053 | if (!skb) | |
4054 | return; | |
4055 | ||
4056 | skb_queue_head(&hdev->cmd_q, skb); | |
4057 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4058 | } | |
4059 | ||
e6214487 JH |
4060 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4061 | hci_req_complete_t *req_complete, | |
4062 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4063 | { |
9238f36a JH |
4064 | struct sk_buff *skb; |
4065 | unsigned long flags; | |
4066 | ||
4067 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4068 | ||
42c6b129 JH |
4069 | /* If the completed command doesn't match the last one that was |
4070 | * sent we need to do special handling of it. | |
9238f36a | 4071 | */ |
42c6b129 JH |
4072 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4073 | /* Some CSR based controllers generate a spontaneous | |
4074 | * reset complete event during init and any pending | |
4075 | * command will never be completed. In such a case we | |
4076 | * need to resend whatever was the last sent | |
4077 | * command. | |
4078 | */ | |
4079 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4080 | hci_resend_last(hdev); | |
4081 | ||
9238f36a | 4082 | return; |
42c6b129 | 4083 | } |
9238f36a | 4084 | |
f80c5dad JPRV |
4085 | /* If we reach this point this event matches the last command sent */ |
4086 | hci_dev_clear_flag(hdev, HCI_CMD_PENDING); | |
4087 | ||
9238f36a JH |
4088 | /* If the command succeeded and there's still more commands in |
4089 | * this request the request is not yet complete. | |
4090 | */ | |
4091 | if (!status && !hci_req_is_complete(hdev)) | |
4092 | return; | |
4093 | ||
2615fd9a LAD |
4094 | skb = hdev->req_skb; |
4095 | ||
9238f36a | 4096 | /* If this was the last command in a request the complete |
2615fd9a | 4097 | * callback would be found in hdev->req_skb instead of the |
9238f36a JH |
4098 | * command queue (hdev->cmd_q). |
4099 | */ | |
2615fd9a LAD |
4100 | if (skb && bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) { |
4101 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
e6214487 JH |
4102 | return; |
4103 | } | |
53e21fbc | 4104 | |
2615fd9a LAD |
4105 | if (skb && bt_cb(skb)->hci.req_complete) { |
4106 | *req_complete = bt_cb(skb)->hci.req_complete; | |
e6214487 | 4107 | return; |
9238f36a JH |
4108 | } |
4109 | ||
4110 | /* Remove all pending commands belonging to this request */ | |
4111 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4112 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4113 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4114 | __skb_queue_head(&hdev->cmd_q, skb); |
4115 | break; | |
4116 | } | |
4117 | ||
3bd7594e DA |
4118 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
4119 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
4120 | else | |
4121 | *req_complete = bt_cb(skb)->hci.req_complete; | |
39c1eb6f | 4122 | dev_kfree_skb_irq(skb); |
9238f36a JH |
4123 | } |
4124 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4125 | } |
4126 | ||
b78752cc | 4127 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4128 | { |
b78752cc | 4129 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4130 | struct sk_buff *skb; |
4131 | ||
4132 | BT_DBG("%s", hdev->name); | |
4133 | ||
9f30de9e TK |
4134 | /* The kcov_remote functions used for collecting packet parsing |
4135 | * coverage information from this background thread and associate | |
4136 | * the coverage with the syscall's thread which originally injected | |
4137 | * the packet. This helps fuzzing the kernel. | |
4138 | */ | |
4139 | for (; (skb = skb_dequeue(&hdev->rx_q)); kcov_remote_stop()) { | |
4140 | kcov_remote_start_common(skb_get_kcov_handle(skb)); | |
4141 | ||
cd82e61c MH |
4142 | /* Send copy to monitor */ |
4143 | hci_send_to_monitor(hdev, skb); | |
4144 | ||
1da177e4 LT |
4145 | if (atomic_read(&hdev->promisc)) { |
4146 | /* Send copy to the sockets */ | |
470fe1b5 | 4147 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4148 | } |
4149 | ||
eb8c101e MK |
4150 | /* If the device has been opened in HCI_USER_CHANNEL, |
4151 | * the userspace has exclusive access to device. | |
4152 | * When device is HCI_INIT, we still need to process | |
4153 | * the data packets to the driver in order | |
4154 | * to complete its setup(). | |
4155 | */ | |
4156 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4157 | !test_bit(HCI_INIT, &hdev->flags)) { | |
1da177e4 LT |
4158 | kfree_skb(skb); |
4159 | continue; | |
4160 | } | |
4161 | ||
4162 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4163 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4164 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4165 | case HCI_ACLDATA_PKT: |
4166 | case HCI_SCODATA_PKT: | |
cc974003 | 4167 | case HCI_ISODATA_PKT: |
1da177e4 LT |
4168 | kfree_skb(skb); |
4169 | continue; | |
3ff50b79 | 4170 | } |
1da177e4 LT |
4171 | } |
4172 | ||
4173 | /* Process frame */ | |
d79f34e3 | 4174 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4175 | case HCI_EVENT_PKT: |
b78752cc | 4176 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4177 | hci_event_packet(hdev, skb); |
4178 | break; | |
4179 | ||
4180 | case HCI_ACLDATA_PKT: | |
4181 | BT_DBG("%s ACL data packet", hdev->name); | |
4182 | hci_acldata_packet(hdev, skb); | |
4183 | break; | |
4184 | ||
4185 | case HCI_SCODATA_PKT: | |
4186 | BT_DBG("%s SCO data packet", hdev->name); | |
4187 | hci_scodata_packet(hdev, skb); | |
4188 | break; | |
4189 | ||
26afbd82 LAD |
4190 | case HCI_ISODATA_PKT: |
4191 | BT_DBG("%s ISO data packet", hdev->name); | |
4192 | hci_isodata_packet(hdev, skb); | |
4193 | break; | |
4194 | ||
1da177e4 LT |
4195 | default: |
4196 | kfree_skb(skb); | |
4197 | break; | |
4198 | } | |
4199 | } | |
1da177e4 LT |
4200 | } |
4201 | ||
63298d6e LAD |
4202 | static void hci_send_cmd_sync(struct hci_dev *hdev, struct sk_buff *skb) |
4203 | { | |
4204 | int err; | |
4205 | ||
4206 | bt_dev_dbg(hdev, "skb %p", skb); | |
4207 | ||
4208 | kfree_skb(hdev->sent_cmd); | |
4209 | ||
4210 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); | |
4211 | if (!hdev->sent_cmd) { | |
4212 | skb_queue_head(&hdev->cmd_q, skb); | |
4213 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4214 | return; | |
4215 | } | |
4216 | ||
4217 | err = hci_send_frame(hdev, skb); | |
4218 | if (err < 0) { | |
6946b9c9 | 4219 | hci_cmd_sync_cancel_sync(hdev, -err); |
63298d6e LAD |
4220 | return; |
4221 | } | |
4222 | ||
2615fd9a LAD |
4223 | if (hci_req_status_pend(hdev) && |
4224 | !hci_dev_test_and_set_flag(hdev, HCI_CMD_PENDING)) { | |
4225 | kfree_skb(hdev->req_skb); | |
947ec0d0 | 4226 | hdev->req_skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); |
2615fd9a | 4227 | } |
63298d6e LAD |
4228 | |
4229 | atomic_dec(&hdev->cmd_cnt); | |
4230 | } | |
4231 | ||
c347b765 | 4232 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4233 | { |
c347b765 | 4234 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4235 | struct sk_buff *skb; |
4236 | ||
2104786b AE |
4237 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4238 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4239 | |
1da177e4 | 4240 | /* Send queued commands */ |
5a08ecce AE |
4241 | if (atomic_read(&hdev->cmd_cnt)) { |
4242 | skb = skb_dequeue(&hdev->cmd_q); | |
4243 | if (!skb) | |
4244 | return; | |
4245 | ||
63298d6e | 4246 | hci_send_cmd_sync(hdev, skb); |
2250abad | 4247 | |
63298d6e LAD |
4248 | rcu_read_lock(); |
4249 | if (test_bit(HCI_RESET, &hdev->flags) || | |
4250 | hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) | |
4251 | cancel_delayed_work(&hdev->cmd_timer); | |
4252 | else | |
4253 | queue_delayed_work(hdev->workqueue, &hdev->cmd_timer, | |
4254 | HCI_CMD_TIMEOUT); | |
4255 | rcu_read_unlock(); | |
1da177e4 LT |
4256 | } |
4257 | } |