Commit | Line | Data |
---|---|---|
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 | ||
ff9ef578 JH |
152 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
153 | ||
bb3e0a33 | 154 | if (old_state == state) |
ff9ef578 JH |
155 | return; |
156 | ||
bb3e0a33 JH |
157 | hdev->discovery.state = state; |
158 | ||
ff9ef578 JH |
159 | switch (state) { |
160 | case DISCOVERY_STOPPED: | |
5bee2fd6 | 161 | hci_update_passive_scan(hdev); |
c54c3860 | 162 | |
bb3e0a33 | 163 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 164 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
165 | break; |
166 | case DISCOVERY_STARTING: | |
167 | break; | |
343f935b | 168 | case DISCOVERY_FINDING: |
ff9ef578 JH |
169 | mgmt_discovering(hdev, 1); |
170 | break; | |
30dc78e1 JH |
171 | case DISCOVERY_RESOLVING: |
172 | break; | |
ff9ef578 JH |
173 | case DISCOVERY_STOPPING: |
174 | break; | |
175 | } | |
ff9ef578 JH |
176 | } |
177 | ||
1f9b9a5d | 178 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 179 | { |
30883512 | 180 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 181 | struct inquiry_entry *p, *n; |
1da177e4 | 182 | |
561aafbc JH |
183 | list_for_each_entry_safe(p, n, &cache->all, all) { |
184 | list_del(&p->all); | |
b57c1a56 | 185 | kfree(p); |
1da177e4 | 186 | } |
561aafbc JH |
187 | |
188 | INIT_LIST_HEAD(&cache->unknown); | |
189 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
190 | } |
191 | ||
a8c5fb1a GP |
192 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
193 | bdaddr_t *bdaddr) | |
1da177e4 | 194 | { |
30883512 | 195 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
196 | struct inquiry_entry *e; |
197 | ||
6ed93dc6 | 198 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 199 | |
561aafbc JH |
200 | list_for_each_entry(e, &cache->all, all) { |
201 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
202 | return e; | |
203 | } | |
204 | ||
205 | return NULL; | |
206 | } | |
207 | ||
208 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 209 | bdaddr_t *bdaddr) |
561aafbc | 210 | { |
30883512 | 211 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
212 | struct inquiry_entry *e; |
213 | ||
6ed93dc6 | 214 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
215 | |
216 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 217 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
218 | return e; |
219 | } | |
220 | ||
221 | return NULL; | |
1da177e4 LT |
222 | } |
223 | ||
30dc78e1 | 224 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
225 | bdaddr_t *bdaddr, |
226 | int state) | |
30dc78e1 JH |
227 | { |
228 | struct discovery_state *cache = &hdev->discovery; | |
229 | struct inquiry_entry *e; | |
230 | ||
6ed93dc6 | 231 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
232 | |
233 | list_for_each_entry(e, &cache->resolve, list) { | |
234 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
235 | return e; | |
236 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
237 | return e; | |
238 | } | |
239 | ||
240 | return NULL; | |
241 | } | |
242 | ||
a3d4e20a | 243 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 244 | struct inquiry_entry *ie) |
a3d4e20a JH |
245 | { |
246 | struct discovery_state *cache = &hdev->discovery; | |
247 | struct list_head *pos = &cache->resolve; | |
248 | struct inquiry_entry *p; | |
249 | ||
250 | list_del(&ie->list); | |
251 | ||
252 | list_for_each_entry(p, &cache->resolve, list) { | |
253 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 254 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
255 | break; |
256 | pos = &p->list; | |
257 | } | |
258 | ||
259 | list_add(&ie->list, pos); | |
260 | } | |
261 | ||
af58925c MH |
262 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
263 | bool name_known) | |
1da177e4 | 264 | { |
30883512 | 265 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 266 | struct inquiry_entry *ie; |
af58925c | 267 | u32 flags = 0; |
1da177e4 | 268 | |
6ed93dc6 | 269 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 270 | |
6928a924 | 271 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 272 | |
af58925c MH |
273 | if (!data->ssp_mode) |
274 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 275 | |
70f23020 | 276 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 277 | if (ie) { |
af58925c MH |
278 | if (!ie->data.ssp_mode) |
279 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 280 | |
a3d4e20a | 281 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 282 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
283 | ie->data.rssi = data->rssi; |
284 | hci_inquiry_cache_update_resolve(hdev, ie); | |
285 | } | |
286 | ||
561aafbc | 287 | goto update; |
a3d4e20a | 288 | } |
561aafbc JH |
289 | |
290 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 291 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
292 | if (!ie) { |
293 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
294 | goto done; | |
295 | } | |
561aafbc JH |
296 | |
297 | list_add(&ie->all, &cache->all); | |
298 | ||
299 | if (name_known) { | |
300 | ie->name_state = NAME_KNOWN; | |
301 | } else { | |
302 | ie->name_state = NAME_NOT_KNOWN; | |
303 | list_add(&ie->list, &cache->unknown); | |
304 | } | |
70f23020 | 305 | |
561aafbc JH |
306 | update: |
307 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 308 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
309 | ie->name_state = NAME_KNOWN; |
310 | list_del(&ie->list); | |
1da177e4 LT |
311 | } |
312 | ||
70f23020 AE |
313 | memcpy(&ie->data, data, sizeof(*data)); |
314 | ie->timestamp = jiffies; | |
1da177e4 | 315 | cache->timestamp = jiffies; |
3175405b JH |
316 | |
317 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 318 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 319 | |
af58925c MH |
320 | done: |
321 | return flags; | |
1da177e4 LT |
322 | } |
323 | ||
324 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
325 | { | |
30883512 | 326 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
327 | struct inquiry_info *info = (struct inquiry_info *) buf; |
328 | struct inquiry_entry *e; | |
329 | int copied = 0; | |
330 | ||
561aafbc | 331 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 332 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
333 | |
334 | if (copied >= num) | |
335 | break; | |
336 | ||
1da177e4 LT |
337 | bacpy(&info->bdaddr, &data->bdaddr); |
338 | info->pscan_rep_mode = data->pscan_rep_mode; | |
339 | info->pscan_period_mode = data->pscan_period_mode; | |
340 | info->pscan_mode = data->pscan_mode; | |
341 | memcpy(info->dev_class, data->dev_class, 3); | |
342 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 343 | |
1da177e4 | 344 | info++; |
b57c1a56 | 345 | copied++; |
1da177e4 LT |
346 | } |
347 | ||
348 | BT_DBG("cache %p, copied %d", cache, copied); | |
349 | return copied; | |
350 | } | |
351 | ||
a1d01db1 | 352 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
353 | { |
354 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 355 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
356 | struct hci_cp_inquiry cp; |
357 | ||
358 | BT_DBG("%s", hdev->name); | |
359 | ||
360 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 361 | return 0; |
1da177e4 LT |
362 | |
363 | /* Start Inquiry */ | |
364 | memcpy(&cp.lap, &ir->lap, 3); | |
365 | cp.length = ir->length; | |
366 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 367 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
368 | |
369 | return 0; | |
1da177e4 LT |
370 | } |
371 | ||
372 | int hci_inquiry(void __user *arg) | |
373 | { | |
374 | __u8 __user *ptr = arg; | |
375 | struct hci_inquiry_req ir; | |
376 | struct hci_dev *hdev; | |
377 | int err = 0, do_inquiry = 0, max_rsp; | |
378 | long timeo; | |
379 | __u8 *buf; | |
380 | ||
381 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
382 | return -EFAULT; | |
383 | ||
5a08ecce AE |
384 | hdev = hci_dev_get(ir.dev_id); |
385 | if (!hdev) | |
1da177e4 LT |
386 | return -ENODEV; |
387 | ||
d7a5a11d | 388 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
389 | err = -EBUSY; |
390 | goto done; | |
391 | } | |
392 | ||
d7a5a11d | 393 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
394 | err = -EOPNOTSUPP; |
395 | goto done; | |
396 | } | |
397 | ||
ca8bee5d | 398 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
399 | err = -EOPNOTSUPP; |
400 | goto done; | |
401 | } | |
402 | ||
d7a5a11d | 403 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
404 | err = -EOPNOTSUPP; |
405 | goto done; | |
406 | } | |
407 | ||
f41a4b2b PS |
408 | /* Restrict maximum inquiry length to 60 seconds */ |
409 | if (ir.length > 60) { | |
410 | err = -EINVAL; | |
411 | goto done; | |
412 | } | |
413 | ||
09fd0de5 | 414 | hci_dev_lock(hdev); |
8e87d142 | 415 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 416 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 417 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
418 | do_inquiry = 1; |
419 | } | |
09fd0de5 | 420 | hci_dev_unlock(hdev); |
1da177e4 | 421 | |
04837f64 | 422 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
423 | |
424 | if (do_inquiry) { | |
01178cd4 | 425 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 426 | timeo, NULL); |
70f23020 AE |
427 | if (err < 0) |
428 | goto done; | |
3e13fa1e AG |
429 | |
430 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
431 | * cleared). If it is interrupted by a signal, return -EINTR. | |
432 | */ | |
74316201 | 433 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
28a758c8 PB |
434 | TASK_INTERRUPTIBLE)) { |
435 | err = -EINTR; | |
436 | goto done; | |
437 | } | |
70f23020 | 438 | } |
1da177e4 | 439 | |
8fc9ced3 GP |
440 | /* for unlimited number of responses we will use buffer with |
441 | * 255 entries | |
442 | */ | |
1da177e4 LT |
443 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
444 | ||
445 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
446 | * copy it to the user space. | |
447 | */ | |
6da2ec56 | 448 | buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL); |
70f23020 | 449 | if (!buf) { |
1da177e4 LT |
450 | err = -ENOMEM; |
451 | goto done; | |
452 | } | |
453 | ||
09fd0de5 | 454 | hci_dev_lock(hdev); |
1da177e4 | 455 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 456 | hci_dev_unlock(hdev); |
1da177e4 LT |
457 | |
458 | BT_DBG("num_rsp %d", ir.num_rsp); | |
459 | ||
460 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
461 | ptr += sizeof(ir); | |
462 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 463 | ir.num_rsp)) |
1da177e4 | 464 | err = -EFAULT; |
8e87d142 | 465 | } else |
1da177e4 LT |
466 | err = -EFAULT; |
467 | ||
468 | kfree(buf); | |
469 | ||
470 | done: | |
471 | hci_dev_put(hdev); | |
472 | return err; | |
473 | } | |
474 | ||
cf75ad8b LAD |
475 | static int hci_dev_do_open(struct hci_dev *hdev) |
476 | { | |
477 | int ret = 0; | |
478 | ||
479 | BT_DBG("%s %p", hdev->name, hdev); | |
480 | ||
481 | hci_req_sync_lock(hdev); | |
482 | ||
483 | ret = hci_dev_open_sync(hdev); | |
484 | ||
b504430c | 485 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
486 | return ret; |
487 | } | |
488 | ||
cbed0ca1 JH |
489 | /* ---- HCI ioctl helpers ---- */ |
490 | ||
491 | int hci_dev_open(__u16 dev) | |
492 | { | |
493 | struct hci_dev *hdev; | |
494 | int err; | |
495 | ||
496 | hdev = hci_dev_get(dev); | |
497 | if (!hdev) | |
498 | return -ENODEV; | |
499 | ||
4a964404 | 500 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
501 | * up as user channel. Trying to bring them up as normal devices |
502 | * will result into a failure. Only user channel operation is | |
503 | * possible. | |
504 | * | |
505 | * When this function is called for a user channel, the flag | |
506 | * HCI_USER_CHANNEL will be set first before attempting to | |
507 | * open the device. | |
508 | */ | |
d7a5a11d MH |
509 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
510 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
511 | err = -EOPNOTSUPP; |
512 | goto done; | |
513 | } | |
514 | ||
e1d08f40 JH |
515 | /* We need to ensure that no other power on/off work is pending |
516 | * before proceeding to call hci_dev_do_open. This is | |
517 | * particularly important if the setup procedure has not yet | |
518 | * completed. | |
519 | */ | |
a69d8927 | 520 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
521 | cancel_delayed_work(&hdev->power_off); |
522 | ||
a5c8f270 MH |
523 | /* After this call it is guaranteed that the setup procedure |
524 | * has finished. This means that error conditions like RFKILL | |
525 | * or no valid public or static random address apply. | |
526 | */ | |
e1d08f40 JH |
527 | flush_workqueue(hdev->req_workqueue); |
528 | ||
12aa4f0a | 529 | /* For controllers not using the management interface and that |
b6ae8457 | 530 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
531 | * so that pairing works for them. Once the management interface |
532 | * is in use this bit will be cleared again and userspace has | |
533 | * to explicitly enable it. | |
534 | */ | |
d7a5a11d MH |
535 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
536 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 537 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 538 | |
cbed0ca1 JH |
539 | err = hci_dev_do_open(hdev); |
540 | ||
fee746b0 | 541 | done: |
cbed0ca1 | 542 | hci_dev_put(hdev); |
cbed0ca1 JH |
543 | return err; |
544 | } | |
545 | ||
cf75ad8b LAD |
546 | int hci_dev_do_close(struct hci_dev *hdev) |
547 | { | |
548 | int err; | |
549 | ||
550 | BT_DBG("%s %p", hdev->name, hdev); | |
551 | ||
552 | hci_req_sync_lock(hdev); | |
553 | ||
554 | err = hci_dev_close_sync(hdev); | |
555 | ||
b504430c | 556 | hci_req_sync_unlock(hdev); |
1da177e4 | 557 | |
61969ef8 | 558 | return err; |
1da177e4 LT |
559 | } |
560 | ||
561 | int hci_dev_close(__u16 dev) | |
562 | { | |
563 | struct hci_dev *hdev; | |
564 | int err; | |
565 | ||
70f23020 AE |
566 | hdev = hci_dev_get(dev); |
567 | if (!hdev) | |
1da177e4 | 568 | return -ENODEV; |
8ee56540 | 569 | |
d7a5a11d | 570 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
571 | err = -EBUSY; |
572 | goto done; | |
573 | } | |
574 | ||
e36bea6e | 575 | cancel_work_sync(&hdev->power_on); |
a69d8927 | 576 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
577 | cancel_delayed_work(&hdev->power_off); |
578 | ||
1da177e4 | 579 | err = hci_dev_do_close(hdev); |
8ee56540 | 580 | |
0736cfa8 | 581 | done: |
1da177e4 LT |
582 | hci_dev_put(hdev); |
583 | return err; | |
584 | } | |
585 | ||
5c912495 | 586 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 587 | { |
5c912495 | 588 | int ret; |
1da177e4 | 589 | |
5c912495 | 590 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 591 | |
b504430c | 592 | hci_req_sync_lock(hdev); |
1da177e4 | 593 | |
1da177e4 LT |
594 | /* Drop queues */ |
595 | skb_queue_purge(&hdev->rx_q); | |
596 | skb_queue_purge(&hdev->cmd_q); | |
597 | ||
877afada SS |
598 | /* Cancel these to avoid queueing non-chained pending work */ |
599 | hci_dev_set_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE); | |
deee93d1 TH |
600 | /* Wait for |
601 | * | |
602 | * if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) | |
603 | * queue_delayed_work(&hdev->{cmd,ncmd}_timer) | |
604 | * | |
605 | * inside RCU section to see the flag or complete scheduling. | |
606 | */ | |
607 | synchronize_rcu(); | |
608 | /* Explicitly cancel works in case scheduled after setting the flag. */ | |
877afada SS |
609 | cancel_delayed_work(&hdev->cmd_timer); |
610 | cancel_delayed_work(&hdev->ncmd_timer); | |
611 | ||
76727c02 JH |
612 | /* Avoid potential lockdep warnings from the *_flush() calls by |
613 | * ensuring the workqueue is empty up front. | |
614 | */ | |
615 | drain_workqueue(hdev->workqueue); | |
616 | ||
09fd0de5 | 617 | hci_dev_lock(hdev); |
1f9b9a5d | 618 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 619 | hci_conn_hash_flush(hdev); |
09fd0de5 | 620 | hci_dev_unlock(hdev); |
1da177e4 LT |
621 | |
622 | if (hdev->flush) | |
623 | hdev->flush(hdev); | |
624 | ||
877afada SS |
625 | hci_dev_clear_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE); |
626 | ||
8e87d142 | 627 | atomic_set(&hdev->cmd_cnt, 1); |
26afbd82 LAD |
628 | hdev->acl_cnt = 0; |
629 | hdev->sco_cnt = 0; | |
630 | hdev->le_cnt = 0; | |
631 | hdev->iso_cnt = 0; | |
1da177e4 | 632 | |
d0b13706 | 633 | ret = hci_reset_sync(hdev); |
1da177e4 | 634 | |
b504430c | 635 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
636 | return ret; |
637 | } | |
638 | ||
5c912495 MH |
639 | int hci_dev_reset(__u16 dev) |
640 | { | |
641 | struct hci_dev *hdev; | |
642 | int err; | |
643 | ||
644 | hdev = hci_dev_get(dev); | |
645 | if (!hdev) | |
646 | return -ENODEV; | |
647 | ||
648 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
649 | err = -ENETDOWN; | |
650 | goto done; | |
651 | } | |
652 | ||
d7a5a11d | 653 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
654 | err = -EBUSY; |
655 | goto done; | |
656 | } | |
657 | ||
d7a5a11d | 658 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
659 | err = -EOPNOTSUPP; |
660 | goto done; | |
661 | } | |
662 | ||
663 | err = hci_dev_do_reset(hdev); | |
664 | ||
665 | done: | |
666 | hci_dev_put(hdev); | |
667 | return err; | |
668 | } | |
669 | ||
1da177e4 LT |
670 | int hci_dev_reset_stat(__u16 dev) |
671 | { | |
672 | struct hci_dev *hdev; | |
673 | int ret = 0; | |
674 | ||
70f23020 AE |
675 | hdev = hci_dev_get(dev); |
676 | if (!hdev) | |
1da177e4 LT |
677 | return -ENODEV; |
678 | ||
d7a5a11d | 679 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
680 | ret = -EBUSY; |
681 | goto done; | |
682 | } | |
683 | ||
d7a5a11d | 684 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
685 | ret = -EOPNOTSUPP; |
686 | goto done; | |
687 | } | |
688 | ||
1da177e4 LT |
689 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
690 | ||
0736cfa8 | 691 | done: |
1da177e4 | 692 | hci_dev_put(hdev); |
1da177e4 LT |
693 | return ret; |
694 | } | |
695 | ||
5bee2fd6 | 696 | static void hci_update_passive_scan_state(struct hci_dev *hdev, u8 scan) |
123abc08 | 697 | { |
bc6d2d04 | 698 | bool conn_changed, discov_changed; |
123abc08 JH |
699 | |
700 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
701 | ||
702 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
703 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
704 | HCI_CONNECTABLE); | |
123abc08 | 705 | else |
a69d8927 MH |
706 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
707 | HCI_CONNECTABLE); | |
123abc08 | 708 | |
bc6d2d04 | 709 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
710 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
711 | HCI_DISCOVERABLE); | |
bc6d2d04 | 712 | } else { |
a358dc11 | 713 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
714 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
715 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
716 | } |
717 | ||
d7a5a11d | 718 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
719 | return; |
720 | ||
bc6d2d04 JH |
721 | if (conn_changed || discov_changed) { |
722 | /* In case this was disabled through mgmt */ | |
a1536da2 | 723 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 724 | |
d7a5a11d | 725 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
651cd3d6 | 726 | hci_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 727 | |
123abc08 | 728 | mgmt_new_settings(hdev); |
bc6d2d04 | 729 | } |
123abc08 JH |
730 | } |
731 | ||
1da177e4 LT |
732 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
733 | { | |
734 | struct hci_dev *hdev; | |
735 | struct hci_dev_req dr; | |
736 | int err = 0; | |
737 | ||
738 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
739 | return -EFAULT; | |
740 | ||
70f23020 AE |
741 | hdev = hci_dev_get(dr.dev_id); |
742 | if (!hdev) | |
1da177e4 LT |
743 | return -ENODEV; |
744 | ||
d7a5a11d | 745 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
746 | err = -EBUSY; |
747 | goto done; | |
748 | } | |
749 | ||
d7a5a11d | 750 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
751 | err = -EOPNOTSUPP; |
752 | goto done; | |
753 | } | |
754 | ||
ca8bee5d | 755 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
756 | err = -EOPNOTSUPP; |
757 | goto done; | |
758 | } | |
759 | ||
d7a5a11d | 760 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
761 | err = -EOPNOTSUPP; |
762 | goto done; | |
763 | } | |
764 | ||
1da177e4 LT |
765 | switch (cmd) { |
766 | case HCISETAUTH: | |
01178cd4 | 767 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 768 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
769 | break; |
770 | ||
771 | case HCISETENCRYPT: | |
772 | if (!lmp_encrypt_capable(hdev)) { | |
773 | err = -EOPNOTSUPP; | |
774 | break; | |
775 | } | |
776 | ||
777 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
778 | /* Auth must be enabled first */ | |
01178cd4 | 779 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 780 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
781 | if (err) |
782 | break; | |
783 | } | |
784 | ||
01178cd4 | 785 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 786 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
787 | break; |
788 | ||
789 | case HCISETSCAN: | |
01178cd4 | 790 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 791 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 792 | |
bc6d2d04 JH |
793 | /* Ensure that the connectable and discoverable states |
794 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 795 | */ |
123abc08 | 796 | if (!err) |
5bee2fd6 | 797 | hci_update_passive_scan_state(hdev, dr.dev_opt); |
1da177e4 LT |
798 | break; |
799 | ||
1da177e4 | 800 | case HCISETLINKPOL: |
01178cd4 | 801 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 802 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
803 | break; |
804 | ||
805 | case HCISETLINKMODE: | |
e4e8e37c MH |
806 | hdev->link_mode = ((__u16) dr.dev_opt) & |
807 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
808 | break; | |
809 | ||
810 | case HCISETPTYPE: | |
b7c23df8 JK |
811 | if (hdev->pkt_type == (__u16) dr.dev_opt) |
812 | break; | |
813 | ||
e4e8e37c | 814 | hdev->pkt_type = (__u16) dr.dev_opt; |
b7c23df8 | 815 | mgmt_phy_configuration_changed(hdev, NULL); |
1da177e4 LT |
816 | break; |
817 | ||
818 | case HCISETACLMTU: | |
e4e8e37c MH |
819 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
820 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
821 | break; |
822 | ||
823 | case HCISETSCOMTU: | |
e4e8e37c MH |
824 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
825 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
826 | break; |
827 | ||
828 | default: | |
829 | err = -EINVAL; | |
830 | break; | |
831 | } | |
e4e8e37c | 832 | |
0736cfa8 | 833 | done: |
1da177e4 LT |
834 | hci_dev_put(hdev); |
835 | return err; | |
836 | } | |
837 | ||
838 | int hci_get_dev_list(void __user *arg) | |
839 | { | |
8035ded4 | 840 | struct hci_dev *hdev; |
1da177e4 LT |
841 | struct hci_dev_list_req *dl; |
842 | struct hci_dev_req *dr; | |
1da177e4 LT |
843 | int n = 0, size, err; |
844 | __u16 dev_num; | |
845 | ||
846 | if (get_user(dev_num, (__u16 __user *) arg)) | |
847 | return -EFAULT; | |
848 | ||
849 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
850 | return -EINVAL; | |
851 | ||
852 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
853 | ||
70f23020 AE |
854 | dl = kzalloc(size, GFP_KERNEL); |
855 | if (!dl) | |
1da177e4 LT |
856 | return -ENOMEM; |
857 | ||
858 | dr = dl->dev_req; | |
859 | ||
f20d09d5 | 860 | read_lock(&hci_dev_list_lock); |
8035ded4 | 861 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 862 | unsigned long flags = hdev->flags; |
c542a06c | 863 | |
2e84d8db MH |
864 | /* When the auto-off is configured it means the transport |
865 | * is running, but in that case still indicate that the | |
866 | * device is actually down. | |
867 | */ | |
d7a5a11d | 868 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 869 | flags &= ~BIT(HCI_UP); |
c542a06c | 870 | |
1da177e4 | 871 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 872 | (dr + n)->dev_opt = flags; |
c542a06c | 873 | |
1da177e4 LT |
874 | if (++n >= dev_num) |
875 | break; | |
876 | } | |
f20d09d5 | 877 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
878 | |
879 | dl->dev_num = n; | |
880 | size = sizeof(*dl) + n * sizeof(*dr); | |
881 | ||
882 | err = copy_to_user(arg, dl, size); | |
883 | kfree(dl); | |
884 | ||
885 | return err ? -EFAULT : 0; | |
886 | } | |
887 | ||
888 | int hci_get_dev_info(void __user *arg) | |
889 | { | |
890 | struct hci_dev *hdev; | |
891 | struct hci_dev_info di; | |
2e84d8db | 892 | unsigned long flags; |
1da177e4 LT |
893 | int err = 0; |
894 | ||
895 | if (copy_from_user(&di, arg, sizeof(di))) | |
896 | return -EFAULT; | |
897 | ||
70f23020 AE |
898 | hdev = hci_dev_get(di.dev_id); |
899 | if (!hdev) | |
1da177e4 LT |
900 | return -ENODEV; |
901 | ||
2e84d8db MH |
902 | /* When the auto-off is configured it means the transport |
903 | * is running, but in that case still indicate that the | |
904 | * device is actually down. | |
905 | */ | |
d7a5a11d | 906 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
907 | flags = hdev->flags & ~BIT(HCI_UP); |
908 | else | |
909 | flags = hdev->flags; | |
c542a06c | 910 | |
1da177e4 LT |
911 | strcpy(di.name, hdev->name); |
912 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 913 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 914 | di.flags = flags; |
1da177e4 | 915 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
916 | if (lmp_bredr_capable(hdev)) { |
917 | di.acl_mtu = hdev->acl_mtu; | |
918 | di.acl_pkts = hdev->acl_pkts; | |
919 | di.sco_mtu = hdev->sco_mtu; | |
920 | di.sco_pkts = hdev->sco_pkts; | |
921 | } else { | |
922 | di.acl_mtu = hdev->le_mtu; | |
923 | di.acl_pkts = hdev->le_pkts; | |
924 | di.sco_mtu = 0; | |
925 | di.sco_pkts = 0; | |
926 | } | |
1da177e4 LT |
927 | di.link_policy = hdev->link_policy; |
928 | di.link_mode = hdev->link_mode; | |
929 | ||
930 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
931 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
932 | ||
933 | if (copy_to_user(arg, &di, sizeof(di))) | |
934 | err = -EFAULT; | |
935 | ||
936 | hci_dev_put(hdev); | |
937 | ||
938 | return err; | |
939 | } | |
940 | ||
941 | /* ---- Interface to HCI drivers ---- */ | |
942 | ||
611b30f7 MH |
943 | static int hci_rfkill_set_block(void *data, bool blocked) |
944 | { | |
945 | struct hci_dev *hdev = data; | |
946 | ||
947 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
948 | ||
d7a5a11d | 949 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
950 | return -EBUSY; |
951 | ||
5e130367 | 952 | if (blocked) { |
a1536da2 | 953 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
954 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
955 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 956 | hci_dev_do_close(hdev); |
5e130367 | 957 | } else { |
a358dc11 | 958 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 959 | } |
611b30f7 MH |
960 | |
961 | return 0; | |
962 | } | |
963 | ||
964 | static const struct rfkill_ops hci_rfkill_ops = { | |
965 | .set_block = hci_rfkill_set_block, | |
966 | }; | |
967 | ||
ab81cbf9 JH |
968 | static void hci_power_on(struct work_struct *work) |
969 | { | |
970 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 971 | int err; |
ab81cbf9 JH |
972 | |
973 | BT_DBG("%s", hdev->name); | |
974 | ||
2ff13894 JH |
975 | if (test_bit(HCI_UP, &hdev->flags) && |
976 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
977 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 978 | cancel_delayed_work(&hdev->power_off); |
cf75ad8b | 979 | err = hci_powered_update_sync(hdev); |
2ff13894 JH |
980 | mgmt_power_on(hdev, err); |
981 | return; | |
982 | } | |
983 | ||
cbed0ca1 | 984 | err = hci_dev_do_open(hdev); |
96570ffc | 985 | if (err < 0) { |
3ad67582 | 986 | hci_dev_lock(hdev); |
96570ffc | 987 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 988 | hci_dev_unlock(hdev); |
ab81cbf9 | 989 | return; |
96570ffc | 990 | } |
ab81cbf9 | 991 | |
a5c8f270 MH |
992 | /* During the HCI setup phase, a few error conditions are |
993 | * ignored and they need to be checked now. If they are still | |
994 | * valid, it is important to turn the device back off. | |
995 | */ | |
d7a5a11d MH |
996 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
997 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
ca8bee5d | 998 | (hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
999 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1000 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 1001 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 1002 | hci_dev_do_close(hdev); |
d7a5a11d | 1003 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
1004 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1005 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 1006 | } |
ab81cbf9 | 1007 | |
a69d8927 | 1008 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
1009 | /* For unconfigured devices, set the HCI_RAW flag |
1010 | * so that userspace can easily identify them. | |
4a964404 | 1011 | */ |
d7a5a11d | 1012 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 1013 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
1014 | |
1015 | /* For fully configured devices, this will send | |
1016 | * the Index Added event. For unconfigured devices, | |
1017 | * it will send Unconfigued Index Added event. | |
1018 | * | |
1019 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
1020 | * and no event will be send. | |
1021 | */ | |
1022 | mgmt_index_added(hdev); | |
a69d8927 | 1023 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
1024 | /* When the controller is now configured, then it |
1025 | * is important to clear the HCI_RAW flag. | |
1026 | */ | |
d7a5a11d | 1027 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
1028 | clear_bit(HCI_RAW, &hdev->flags); |
1029 | ||
d603b76b MH |
1030 | /* Powering on the controller with HCI_CONFIG set only |
1031 | * happens with the transition from unconfigured to | |
1032 | * configured. This will send the Index Added event. | |
1033 | */ | |
744cf19e | 1034 | mgmt_index_added(hdev); |
fee746b0 | 1035 | } |
ab81cbf9 JH |
1036 | } |
1037 | ||
1038 | static void hci_power_off(struct work_struct *work) | |
1039 | { | |
3243553f | 1040 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1041 | power_off.work); |
ab81cbf9 JH |
1042 | |
1043 | BT_DBG("%s", hdev->name); | |
1044 | ||
8ee56540 | 1045 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1046 | } |
1047 | ||
c7741d16 MH |
1048 | static void hci_error_reset(struct work_struct *work) |
1049 | { | |
1050 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
1051 | ||
1052 | BT_DBG("%s", hdev->name); | |
1053 | ||
1054 | if (hdev->hw_error) | |
1055 | hdev->hw_error(hdev, hdev->hw_error_code); | |
1056 | else | |
2064ee33 | 1057 | bt_dev_err(hdev, "hardware error 0x%2.2x", hdev->hw_error_code); |
c7741d16 MH |
1058 | |
1059 | if (hci_dev_do_close(hdev)) | |
1060 | return; | |
1061 | ||
c7741d16 MH |
1062 | hci_dev_do_open(hdev); |
1063 | } | |
1064 | ||
35f7498a | 1065 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 1066 | { |
4821002c | 1067 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1068 | |
4821002c JH |
1069 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1070 | list_del(&uuid->list); | |
2aeb9a1a JH |
1071 | kfree(uuid); |
1072 | } | |
2aeb9a1a JH |
1073 | } |
1074 | ||
35f7498a | 1075 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 1076 | { |
0378b597 | 1077 | struct link_key *key; |
55ed8ca1 | 1078 | |
d7d41682 | 1079 | list_for_each_entry(key, &hdev->link_keys, list) { |
0378b597 JH |
1080 | list_del_rcu(&key->list); |
1081 | kfree_rcu(key, rcu); | |
55ed8ca1 | 1082 | } |
55ed8ca1 JH |
1083 | } |
1084 | ||
35f7498a | 1085 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 1086 | { |
970d0f1b | 1087 | struct smp_ltk *k; |
b899efaf | 1088 | |
d7d41682 | 1089 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
970d0f1b JH |
1090 | list_del_rcu(&k->list); |
1091 | kfree_rcu(k, rcu); | |
b899efaf | 1092 | } |
b899efaf VCG |
1093 | } |
1094 | ||
970c4e46 JH |
1095 | void hci_smp_irks_clear(struct hci_dev *hdev) |
1096 | { | |
adae20cb | 1097 | struct smp_irk *k; |
970c4e46 | 1098 | |
d7d41682 | 1099 | list_for_each_entry(k, &hdev->identity_resolving_keys, list) { |
adae20cb JH |
1100 | list_del_rcu(&k->list); |
1101 | kfree_rcu(k, rcu); | |
970c4e46 JH |
1102 | } |
1103 | } | |
1104 | ||
600a8749 AM |
1105 | void hci_blocked_keys_clear(struct hci_dev *hdev) |
1106 | { | |
1107 | struct blocked_key *b; | |
1108 | ||
d7d41682 | 1109 | list_for_each_entry(b, &hdev->blocked_keys, list) { |
600a8749 AM |
1110 | list_del_rcu(&b->list); |
1111 | kfree_rcu(b, rcu); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]) | |
1116 | { | |
1117 | bool blocked = false; | |
1118 | struct blocked_key *b; | |
1119 | ||
1120 | rcu_read_lock(); | |
0c2ac7d4 | 1121 | list_for_each_entry_rcu(b, &hdev->blocked_keys, list) { |
600a8749 AM |
1122 | if (b->type == type && !memcmp(b->val, val, sizeof(b->val))) { |
1123 | blocked = true; | |
1124 | break; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | rcu_read_unlock(); | |
1129 | return blocked; | |
1130 | } | |
1131 | ||
55ed8ca1 JH |
1132 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1133 | { | |
8035ded4 | 1134 | struct link_key *k; |
55ed8ca1 | 1135 | |
0378b597 JH |
1136 | rcu_read_lock(); |
1137 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
1138 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
1139 | rcu_read_unlock(); | |
600a8749 AM |
1140 | |
1141 | if (hci_is_blocked_key(hdev, | |
1142 | HCI_BLOCKED_KEY_TYPE_LINKKEY, | |
1143 | k->val)) { | |
1144 | bt_dev_warn_ratelimited(hdev, | |
1145 | "Link key blocked for %pMR", | |
1146 | &k->bdaddr); | |
1147 | return NULL; | |
1148 | } | |
1149 | ||
55ed8ca1 | 1150 | return k; |
0378b597 JH |
1151 | } |
1152 | } | |
1153 | rcu_read_unlock(); | |
55ed8ca1 JH |
1154 | |
1155 | return NULL; | |
1156 | } | |
1157 | ||
745c0ce3 | 1158 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1159 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1160 | { |
1161 | /* Legacy key */ | |
1162 | if (key_type < 0x03) | |
745c0ce3 | 1163 | return true; |
d25e28ab JH |
1164 | |
1165 | /* Debug keys are insecure so don't store them persistently */ | |
1166 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1167 | return false; |
d25e28ab JH |
1168 | |
1169 | /* Changed combination key and there's no previous one */ | |
1170 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1171 | return false; |
d25e28ab JH |
1172 | |
1173 | /* Security mode 3 case */ | |
1174 | if (!conn) | |
745c0ce3 | 1175 | return true; |
d25e28ab | 1176 | |
e3befab9 JH |
1177 | /* BR/EDR key derived using SC from an LE link */ |
1178 | if (conn->type == LE_LINK) | |
1179 | return true; | |
1180 | ||
d25e28ab JH |
1181 | /* Neither local nor remote side had no-bonding as requirement */ |
1182 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1183 | return true; |
d25e28ab JH |
1184 | |
1185 | /* Local side had dedicated bonding as requirement */ | |
1186 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1187 | return true; |
d25e28ab JH |
1188 | |
1189 | /* Remote side had dedicated bonding as requirement */ | |
1190 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1191 | return true; |
d25e28ab JH |
1192 | |
1193 | /* If none of the above criteria match, then don't store the key | |
1194 | * persistently */ | |
745c0ce3 | 1195 | return false; |
d25e28ab JH |
1196 | } |
1197 | ||
e804d25d | 1198 | static u8 ltk_role(u8 type) |
98a0b845 | 1199 | { |
e804d25d JH |
1200 | if (type == SMP_LTK) |
1201 | return HCI_ROLE_MASTER; | |
98a0b845 | 1202 | |
e804d25d | 1203 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
1204 | } |
1205 | ||
f3a73d97 JH |
1206 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1207 | u8 addr_type, u8 role) | |
75d262c2 | 1208 | { |
c9839a11 | 1209 | struct smp_ltk *k; |
75d262c2 | 1210 | |
970d0f1b JH |
1211 | rcu_read_lock(); |
1212 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
1213 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
1214 | continue; | |
1215 | ||
923e2414 | 1216 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 1217 | rcu_read_unlock(); |
600a8749 AM |
1218 | |
1219 | if (hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_LTK, | |
1220 | k->val)) { | |
1221 | bt_dev_warn_ratelimited(hdev, | |
1222 | "LTK blocked for %pMR", | |
1223 | &k->bdaddr); | |
1224 | return NULL; | |
1225 | } | |
1226 | ||
75d262c2 | 1227 | return k; |
970d0f1b JH |
1228 | } |
1229 | } | |
1230 | rcu_read_unlock(); | |
75d262c2 VCG |
1231 | |
1232 | return NULL; | |
1233 | } | |
75d262c2 | 1234 | |
970c4e46 JH |
1235 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
1236 | { | |
600a8749 | 1237 | struct smp_irk *irk_to_return = NULL; |
970c4e46 JH |
1238 | struct smp_irk *irk; |
1239 | ||
adae20cb JH |
1240 | rcu_read_lock(); |
1241 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
1242 | if (!bacmp(&irk->rpa, rpa)) { | |
600a8749 AM |
1243 | irk_to_return = irk; |
1244 | goto done; | |
adae20cb | 1245 | } |
970c4e46 JH |
1246 | } |
1247 | ||
adae20cb | 1248 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 1249 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 1250 | bacpy(&irk->rpa, rpa); |
600a8749 AM |
1251 | irk_to_return = irk; |
1252 | goto done; | |
970c4e46 JH |
1253 | } |
1254 | } | |
600a8749 AM |
1255 | |
1256 | done: | |
1257 | if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK, | |
1258 | irk_to_return->val)) { | |
1259 | bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR", | |
1260 | &irk_to_return->bdaddr); | |
1261 | irk_to_return = NULL; | |
1262 | } | |
1263 | ||
adae20cb | 1264 | rcu_read_unlock(); |
970c4e46 | 1265 | |
600a8749 | 1266 | return irk_to_return; |
970c4e46 JH |
1267 | } |
1268 | ||
1269 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
1270 | u8 addr_type) | |
1271 | { | |
600a8749 | 1272 | struct smp_irk *irk_to_return = NULL; |
970c4e46 JH |
1273 | struct smp_irk *irk; |
1274 | ||
6cfc9988 JH |
1275 | /* Identity Address must be public or static random */ |
1276 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
1277 | return NULL; | |
1278 | ||
adae20cb JH |
1279 | rcu_read_lock(); |
1280 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 1281 | if (addr_type == irk->addr_type && |
adae20cb | 1282 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
600a8749 AM |
1283 | irk_to_return = irk; |
1284 | goto done; | |
adae20cb | 1285 | } |
970c4e46 | 1286 | } |
600a8749 AM |
1287 | |
1288 | done: | |
1289 | ||
1290 | if (irk_to_return && hci_is_blocked_key(hdev, HCI_BLOCKED_KEY_TYPE_IRK, | |
1291 | irk_to_return->val)) { | |
1292 | bt_dev_warn_ratelimited(hdev, "Identity key blocked for %pMR", | |
1293 | &irk_to_return->bdaddr); | |
1294 | irk_to_return = NULL; | |
1295 | } | |
1296 | ||
adae20cb | 1297 | rcu_read_unlock(); |
970c4e46 | 1298 | |
600a8749 | 1299 | return irk_to_return; |
970c4e46 JH |
1300 | } |
1301 | ||
567fa2aa | 1302 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
1303 | bdaddr_t *bdaddr, u8 *val, u8 type, |
1304 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
1305 | { |
1306 | struct link_key *key, *old_key; | |
745c0ce3 | 1307 | u8 old_key_type; |
55ed8ca1 JH |
1308 | |
1309 | old_key = hci_find_link_key(hdev, bdaddr); | |
1310 | if (old_key) { | |
1311 | old_key_type = old_key->type; | |
1312 | key = old_key; | |
1313 | } else { | |
12adcf3a | 1314 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 1315 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 1316 | if (!key) |
567fa2aa | 1317 | return NULL; |
0378b597 | 1318 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
1319 | } |
1320 | ||
6ed93dc6 | 1321 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1322 | |
d25e28ab JH |
1323 | /* Some buggy controller combinations generate a changed |
1324 | * combination key for legacy pairing even when there's no | |
1325 | * previous key */ | |
1326 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1327 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1328 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1329 | if (conn) |
1330 | conn->key_type = type; | |
1331 | } | |
d25e28ab | 1332 | |
55ed8ca1 | 1333 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1334 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1335 | key->pin_len = pin_len; |
1336 | ||
b6020ba0 | 1337 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1338 | key->type = old_key_type; |
4748fed2 JH |
1339 | else |
1340 | key->type = type; | |
1341 | ||
7652ff6a JH |
1342 | if (persistent) |
1343 | *persistent = hci_persistent_key(hdev, conn, type, | |
1344 | old_key_type); | |
4df378a1 | 1345 | |
567fa2aa | 1346 | return key; |
55ed8ca1 JH |
1347 | } |
1348 | ||
ca9142b8 | 1349 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 1350 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 1351 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 1352 | { |
c9839a11 | 1353 | struct smp_ltk *key, *old_key; |
e804d25d | 1354 | u8 role = ltk_role(type); |
75d262c2 | 1355 | |
f3a73d97 | 1356 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 1357 | if (old_key) |
75d262c2 | 1358 | key = old_key; |
c9839a11 | 1359 | else { |
0a14ab41 | 1360 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 1361 | if (!key) |
ca9142b8 | 1362 | return NULL; |
970d0f1b | 1363 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1364 | } |
1365 | ||
75d262c2 | 1366 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1367 | key->bdaddr_type = addr_type; |
1368 | memcpy(key->val, tk, sizeof(key->val)); | |
1369 | key->authenticated = authenticated; | |
1370 | key->ediv = ediv; | |
fe39c7b2 | 1371 | key->rand = rand; |
c9839a11 VCG |
1372 | key->enc_size = enc_size; |
1373 | key->type = type; | |
75d262c2 | 1374 | |
ca9142b8 | 1375 | return key; |
75d262c2 VCG |
1376 | } |
1377 | ||
ca9142b8 JH |
1378 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1379 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
1380 | { |
1381 | struct smp_irk *irk; | |
1382 | ||
1383 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
1384 | if (!irk) { | |
1385 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
1386 | if (!irk) | |
ca9142b8 | 1387 | return NULL; |
970c4e46 JH |
1388 | |
1389 | bacpy(&irk->bdaddr, bdaddr); | |
1390 | irk->addr_type = addr_type; | |
1391 | ||
adae20cb | 1392 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
1393 | } |
1394 | ||
1395 | memcpy(irk->val, val, 16); | |
1396 | bacpy(&irk->rpa, rpa); | |
1397 | ||
ca9142b8 | 1398 | return irk; |
970c4e46 JH |
1399 | } |
1400 | ||
55ed8ca1 JH |
1401 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1402 | { | |
1403 | struct link_key *key; | |
1404 | ||
1405 | key = hci_find_link_key(hdev, bdaddr); | |
1406 | if (!key) | |
1407 | return -ENOENT; | |
1408 | ||
6ed93dc6 | 1409 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 1410 | |
0378b597 JH |
1411 | list_del_rcu(&key->list); |
1412 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
1413 | |
1414 | return 0; | |
1415 | } | |
1416 | ||
e0b2b27e | 1417 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 1418 | { |
970d0f1b | 1419 | struct smp_ltk *k; |
c51ffa0b | 1420 | int removed = 0; |
b899efaf | 1421 | |
970d0f1b | 1422 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 1423 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
1424 | continue; |
1425 | ||
6ed93dc6 | 1426 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 1427 | |
970d0f1b JH |
1428 | list_del_rcu(&k->list); |
1429 | kfree_rcu(k, rcu); | |
c51ffa0b | 1430 | removed++; |
b899efaf VCG |
1431 | } |
1432 | ||
c51ffa0b | 1433 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
1434 | } |
1435 | ||
a7ec7338 JH |
1436 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
1437 | { | |
adae20cb | 1438 | struct smp_irk *k; |
a7ec7338 | 1439 | |
adae20cb | 1440 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
1441 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
1442 | continue; | |
1443 | ||
1444 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
1445 | ||
adae20cb JH |
1446 | list_del_rcu(&k->list); |
1447 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
1448 | } |
1449 | } | |
1450 | ||
55e76b38 JH |
1451 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
1452 | { | |
1453 | struct smp_ltk *k; | |
4ba9faf3 | 1454 | struct smp_irk *irk; |
55e76b38 JH |
1455 | u8 addr_type; |
1456 | ||
1457 | if (type == BDADDR_BREDR) { | |
1458 | if (hci_find_link_key(hdev, bdaddr)) | |
1459 | return true; | |
1460 | return false; | |
1461 | } | |
1462 | ||
1463 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
1464 | if (type == BDADDR_LE_PUBLIC) | |
1465 | addr_type = ADDR_LE_DEV_PUBLIC; | |
1466 | else | |
1467 | addr_type = ADDR_LE_DEV_RANDOM; | |
1468 | ||
4ba9faf3 JH |
1469 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
1470 | if (irk) { | |
1471 | bdaddr = &irk->bdaddr; | |
1472 | addr_type = irk->addr_type; | |
1473 | } | |
1474 | ||
55e76b38 JH |
1475 | rcu_read_lock(); |
1476 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
1477 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
1478 | rcu_read_unlock(); | |
55e76b38 | 1479 | return true; |
87c8b28d | 1480 | } |
55e76b38 JH |
1481 | } |
1482 | rcu_read_unlock(); | |
1483 | ||
1484 | return false; | |
1485 | } | |
1486 | ||
6bd32326 | 1487 | /* HCI command timer function */ |
65cc2b49 | 1488 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 1489 | { |
65cc2b49 MH |
1490 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1491 | cmd_timer.work); | |
6bd32326 | 1492 | |
bda4f23a AE |
1493 | if (hdev->sent_cmd) { |
1494 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1495 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1496 | ||
2064ee33 | 1497 | bt_dev_err(hdev, "command 0x%4.4x tx timeout", opcode); |
bda4f23a | 1498 | } else { |
2064ee33 | 1499 | bt_dev_err(hdev, "command tx timeout"); |
bda4f23a AE |
1500 | } |
1501 | ||
e2bef384 RJ |
1502 | if (hdev->cmd_timeout) |
1503 | hdev->cmd_timeout(hdev); | |
1504 | ||
6bd32326 | 1505 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1506 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1507 | } |
1508 | ||
de75cd0d MM |
1509 | /* HCI ncmd timer function */ |
1510 | static void hci_ncmd_timeout(struct work_struct *work) | |
1511 | { | |
1512 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
1513 | ncmd_timer.work); | |
1514 | ||
1515 | bt_dev_err(hdev, "Controller not accepting commands anymore: ncmd = 0"); | |
1516 | ||
1517 | /* During HCI_INIT phase no events can be injected if the ncmd timer | |
1518 | * triggers since the procedure has its own timeout handling. | |
1519 | */ | |
1520 | if (test_bit(HCI_INIT, &hdev->flags)) | |
1521 | return; | |
1522 | ||
1523 | /* This is an irrecoverable state, inject hardware error event */ | |
1524 | hci_reset_dev(hdev); | |
1525 | } | |
1526 | ||
2763eda6 | 1527 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 1528 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
1529 | { |
1530 | struct oob_data *data; | |
1531 | ||
6928a924 JH |
1532 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
1533 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
1534 | continue; | |
1535 | if (data->bdaddr_type != bdaddr_type) | |
1536 | continue; | |
1537 | return data; | |
1538 | } | |
2763eda6 SJ |
1539 | |
1540 | return NULL; | |
1541 | } | |
1542 | ||
6928a924 JH |
1543 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
1544 | u8 bdaddr_type) | |
2763eda6 SJ |
1545 | { |
1546 | struct oob_data *data; | |
1547 | ||
6928a924 | 1548 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
1549 | if (!data) |
1550 | return -ENOENT; | |
1551 | ||
6928a924 | 1552 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
1553 | |
1554 | list_del(&data->list); | |
1555 | kfree(data); | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
35f7498a | 1560 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
1561 | { |
1562 | struct oob_data *data, *n; | |
1563 | ||
1564 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1565 | list_del(&data->list); | |
1566 | kfree(data); | |
1567 | } | |
2763eda6 SJ |
1568 | } |
1569 | ||
0798872e | 1570 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 1571 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 1572 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
1573 | { |
1574 | struct oob_data *data; | |
1575 | ||
6928a924 | 1576 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 1577 | if (!data) { |
0a14ab41 | 1578 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
1579 | if (!data) |
1580 | return -ENOMEM; | |
1581 | ||
1582 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 1583 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
1584 | list_add(&data->list, &hdev->remote_oob_data); |
1585 | } | |
1586 | ||
81328d5c JH |
1587 | if (hash192 && rand192) { |
1588 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
1589 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
1590 | if (hash256 && rand256) |
1591 | data->present = 0x03; | |
81328d5c JH |
1592 | } else { |
1593 | memset(data->hash192, 0, sizeof(data->hash192)); | |
1594 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
1595 | if (hash256 && rand256) |
1596 | data->present = 0x02; | |
1597 | else | |
1598 | data->present = 0x00; | |
0798872e MH |
1599 | } |
1600 | ||
81328d5c JH |
1601 | if (hash256 && rand256) { |
1602 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
1603 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
1604 | } else { | |
1605 | memset(data->hash256, 0, sizeof(data->hash256)); | |
1606 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
1607 | if (hash192 && rand192) |
1608 | data->present = 0x01; | |
81328d5c | 1609 | } |
0798872e | 1610 | |
6ed93dc6 | 1611 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1612 | |
1613 | return 0; | |
1614 | } | |
1615 | ||
d2609b34 FG |
1616 | /* This function requires the caller holds hdev->lock */ |
1617 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
1618 | { | |
1619 | struct adv_info *adv_instance; | |
1620 | ||
1621 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
1622 | if (adv_instance->instance == instance) | |
1623 | return adv_instance; | |
1624 | } | |
1625 | ||
1626 | return NULL; | |
1627 | } | |
1628 | ||
1629 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
1630 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
1631 | { | |
d2609b34 FG |
1632 | struct adv_info *cur_instance; |
1633 | ||
1634 | cur_instance = hci_find_adv_instance(hdev, instance); | |
1635 | if (!cur_instance) | |
1636 | return NULL; | |
1637 | ||
1638 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
1639 | struct adv_info, list)) | |
1640 | return list_first_entry(&hdev->adv_instances, | |
1641 | struct adv_info, list); | |
1642 | else | |
1643 | return list_next_entry(cur_instance, list); | |
1644 | } | |
1645 | ||
1646 | /* This function requires the caller holds hdev->lock */ | |
1647 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
1648 | { | |
1649 | struct adv_info *adv_instance; | |
1650 | ||
1651 | adv_instance = hci_find_adv_instance(hdev, instance); | |
1652 | if (!adv_instance) | |
1653 | return -ENOENT; | |
1654 | ||
1655 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
1656 | ||
cab054ab JH |
1657 | if (hdev->cur_adv_instance == instance) { |
1658 | if (hdev->adv_instance_timeout) { | |
1659 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1660 | hdev->adv_instance_timeout = 0; | |
1661 | } | |
1662 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
1663 | } |
1664 | ||
a73c046a JK |
1665 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
1666 | ||
d2609b34 FG |
1667 | list_del(&adv_instance->list); |
1668 | kfree(adv_instance); | |
1669 | ||
1670 | hdev->adv_instance_cnt--; | |
1671 | ||
1672 | return 0; | |
1673 | } | |
1674 | ||
a73c046a JK |
1675 | void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired) |
1676 | { | |
1677 | struct adv_info *adv_instance, *n; | |
1678 | ||
1679 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) | |
1680 | adv_instance->rpa_expired = rpa_expired; | |
1681 | } | |
1682 | ||
d2609b34 FG |
1683 | /* This function requires the caller holds hdev->lock */ |
1684 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
1685 | { | |
1686 | struct adv_info *adv_instance, *n; | |
1687 | ||
5d900e46 FG |
1688 | if (hdev->adv_instance_timeout) { |
1689 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1690 | hdev->adv_instance_timeout = 0; | |
1691 | } | |
1692 | ||
d2609b34 | 1693 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
a73c046a | 1694 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
d2609b34 FG |
1695 | list_del(&adv_instance->list); |
1696 | kfree(adv_instance); | |
1697 | } | |
1698 | ||
1699 | hdev->adv_instance_cnt = 0; | |
cab054ab | 1700 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
1701 | } |
1702 | ||
a73c046a JK |
1703 | static void adv_instance_rpa_expired(struct work_struct *work) |
1704 | { | |
1705 | struct adv_info *adv_instance = container_of(work, struct adv_info, | |
1706 | rpa_expired_cb.work); | |
1707 | ||
1708 | BT_DBG(""); | |
1709 | ||
1710 | adv_instance->rpa_expired = true; | |
1711 | } | |
1712 | ||
d2609b34 | 1713 | /* This function requires the caller holds hdev->lock */ |
eca0ae4a LAD |
1714 | struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, |
1715 | u32 flags, u16 adv_data_len, u8 *adv_data, | |
1716 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
1717 | u16 timeout, u16 duration, s8 tx_power, | |
b338d917 BG |
1718 | u32 min_interval, u32 max_interval, |
1719 | u8 mesh_handle) | |
d2609b34 | 1720 | { |
eca0ae4a | 1721 | struct adv_info *adv; |
d2609b34 | 1722 | |
eca0ae4a LAD |
1723 | adv = hci_find_adv_instance(hdev, instance); |
1724 | if (adv) { | |
1725 | memset(adv->adv_data, 0, sizeof(adv->adv_data)); | |
1726 | memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data)); | |
1727 | memset(adv->per_adv_data, 0, sizeof(adv->per_adv_data)); | |
d2609b34 | 1728 | } else { |
1d0fac2c | 1729 | if (hdev->adv_instance_cnt >= hdev->le_num_of_adv_sets || |
b338d917 | 1730 | instance < 1 || instance > hdev->le_num_of_adv_sets + 1) |
eca0ae4a | 1731 | return ERR_PTR(-EOVERFLOW); |
d2609b34 | 1732 | |
eca0ae4a LAD |
1733 | adv = kzalloc(sizeof(*adv), GFP_KERNEL); |
1734 | if (!adv) | |
1735 | return ERR_PTR(-ENOMEM); | |
d2609b34 | 1736 | |
eca0ae4a LAD |
1737 | adv->pending = true; |
1738 | adv->instance = instance; | |
1739 | list_add(&adv->list, &hdev->adv_instances); | |
d2609b34 FG |
1740 | hdev->adv_instance_cnt++; |
1741 | } | |
1742 | ||
eca0ae4a LAD |
1743 | adv->flags = flags; |
1744 | adv->min_interval = min_interval; | |
1745 | adv->max_interval = max_interval; | |
1746 | adv->tx_power = tx_power; | |
b338d917 BG |
1747 | /* Defining a mesh_handle changes the timing units to ms, |
1748 | * rather than seconds, and ties the instance to the requested | |
1749 | * mesh_tx queue. | |
1750 | */ | |
1751 | adv->mesh = mesh_handle; | |
d2609b34 | 1752 | |
34a718bc LAD |
1753 | hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data, |
1754 | scan_rsp_len, scan_rsp_data); | |
d2609b34 | 1755 | |
eca0ae4a LAD |
1756 | adv->timeout = timeout; |
1757 | adv->remaining_time = timeout; | |
d2609b34 FG |
1758 | |
1759 | if (duration == 0) | |
eca0ae4a | 1760 | adv->duration = hdev->def_multi_adv_rotation_duration; |
d2609b34 | 1761 | else |
eca0ae4a | 1762 | adv->duration = duration; |
d2609b34 | 1763 | |
eca0ae4a | 1764 | INIT_DELAYED_WORK(&adv->rpa_expired_cb, adv_instance_rpa_expired); |
a73c046a | 1765 | |
d2609b34 FG |
1766 | BT_DBG("%s for %dMR", hdev->name, instance); |
1767 | ||
eca0ae4a LAD |
1768 | return adv; |
1769 | } | |
1770 | ||
1771 | /* This function requires the caller holds hdev->lock */ | |
1772 | struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, | |
1773 | u32 flags, u8 data_len, u8 *data, | |
1774 | u32 min_interval, u32 max_interval) | |
1775 | { | |
1776 | struct adv_info *adv; | |
1777 | ||
1778 | adv = hci_add_adv_instance(hdev, instance, flags, 0, NULL, 0, NULL, | |
1779 | 0, 0, HCI_ADV_TX_POWER_NO_PREFERENCE, | |
b338d917 | 1780 | min_interval, max_interval, 0); |
eca0ae4a LAD |
1781 | if (IS_ERR(adv)) |
1782 | return adv; | |
1783 | ||
1784 | adv->periodic = true; | |
1785 | adv->per_adv_data_len = data_len; | |
1786 | ||
1787 | if (data) | |
1788 | memcpy(adv->per_adv_data, data, data_len); | |
1789 | ||
1790 | return adv; | |
d2609b34 FG |
1791 | } |
1792 | ||
31aab5c2 DW |
1793 | /* This function requires the caller holds hdev->lock */ |
1794 | int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, | |
1795 | u16 adv_data_len, u8 *adv_data, | |
1796 | u16 scan_rsp_len, u8 *scan_rsp_data) | |
1797 | { | |
34a718bc | 1798 | struct adv_info *adv; |
31aab5c2 | 1799 | |
34a718bc | 1800 | adv = hci_find_adv_instance(hdev, instance); |
31aab5c2 DW |
1801 | |
1802 | /* If advertisement doesn't exist, we can't modify its data */ | |
34a718bc | 1803 | if (!adv) |
31aab5c2 DW |
1804 | return -ENOENT; |
1805 | ||
34a718bc LAD |
1806 | if (adv_data_len && ADV_DATA_CMP(adv, adv_data, adv_data_len)) { |
1807 | memset(adv->adv_data, 0, sizeof(adv->adv_data)); | |
1808 | memcpy(adv->adv_data, adv_data, adv_data_len); | |
1809 | adv->adv_data_len = adv_data_len; | |
1810 | adv->adv_data_changed = true; | |
31aab5c2 DW |
1811 | } |
1812 | ||
34a718bc LAD |
1813 | if (scan_rsp_len && SCAN_RSP_CMP(adv, scan_rsp_data, scan_rsp_len)) { |
1814 | memset(adv->scan_rsp_data, 0, sizeof(adv->scan_rsp_data)); | |
1815 | memcpy(adv->scan_rsp_data, scan_rsp_data, scan_rsp_len); | |
1816 | adv->scan_rsp_len = scan_rsp_len; | |
1817 | adv->scan_rsp_changed = true; | |
31aab5c2 DW |
1818 | } |
1819 | ||
34a718bc LAD |
1820 | /* Mark as changed if there are flags which would affect it */ |
1821 | if (((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) || | |
1822 | adv->flags & MGMT_ADV_FLAG_LOCAL_NAME) | |
1823 | adv->scan_rsp_changed = true; | |
1824 | ||
31aab5c2 DW |
1825 | return 0; |
1826 | } | |
1827 | ||
01ce70b0 LAD |
1828 | /* This function requires the caller holds hdev->lock */ |
1829 | u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance) | |
1830 | { | |
1831 | u32 flags; | |
1832 | struct adv_info *adv; | |
1833 | ||
1834 | if (instance == 0x00) { | |
1835 | /* Instance 0 always manages the "Tx Power" and "Flags" | |
1836 | * fields | |
1837 | */ | |
1838 | flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS; | |
1839 | ||
1840 | /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting | |
1841 | * corresponds to the "connectable" instance flag. | |
1842 | */ | |
1843 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) | |
1844 | flags |= MGMT_ADV_FLAG_CONNECTABLE; | |
1845 | ||
1846 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) | |
1847 | flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; | |
1848 | else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
1849 | flags |= MGMT_ADV_FLAG_DISCOV; | |
1850 | ||
1851 | return flags; | |
1852 | } | |
1853 | ||
1854 | adv = hci_find_adv_instance(hdev, instance); | |
1855 | ||
1856 | /* Return 0 when we got an invalid instance identifier. */ | |
1857 | if (!adv) | |
1858 | return 0; | |
1859 | ||
1860 | return adv->flags; | |
1861 | } | |
1862 | ||
1863 | bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance) | |
1864 | { | |
1865 | struct adv_info *adv; | |
1866 | ||
1867 | /* Instance 0x00 always set local name */ | |
1868 | if (instance == 0x00) | |
1869 | return true; | |
1870 | ||
1871 | adv = hci_find_adv_instance(hdev, instance); | |
1872 | if (!adv) | |
1873 | return false; | |
1874 | ||
1875 | if (adv->flags & MGMT_ADV_FLAG_APPEARANCE || | |
1876 | adv->flags & MGMT_ADV_FLAG_LOCAL_NAME) | |
1877 | return true; | |
1878 | ||
1879 | return adv->scan_rsp_len ? true : false; | |
1880 | } | |
1881 | ||
e5e1e7fd MC |
1882 | /* This function requires the caller holds hdev->lock */ |
1883 | void hci_adv_monitors_clear(struct hci_dev *hdev) | |
1884 | { | |
b139553d MC |
1885 | struct adv_monitor *monitor; |
1886 | int handle; | |
1887 | ||
1888 | idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle) | |
66bd095a | 1889 | hci_free_adv_monitor(hdev, monitor); |
b139553d | 1890 | |
e5e1e7fd MC |
1891 | idr_destroy(&hdev->adv_monitors_idr); |
1892 | } | |
1893 | ||
66bd095a AP |
1894 | /* Frees the monitor structure and do some bookkeepings. |
1895 | * This function requires the caller holds hdev->lock. | |
1896 | */ | |
1897 | void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) | |
b139553d MC |
1898 | { |
1899 | struct adv_pattern *pattern; | |
1900 | struct adv_pattern *tmp; | |
1901 | ||
1902 | if (!monitor) | |
1903 | return; | |
1904 | ||
66bd095a AP |
1905 | list_for_each_entry_safe(pattern, tmp, &monitor->patterns, list) { |
1906 | list_del(&pattern->list); | |
b139553d | 1907 | kfree(pattern); |
66bd095a AP |
1908 | } |
1909 | ||
1910 | if (monitor->handle) | |
1911 | idr_remove(&hdev->adv_monitors_idr, monitor->handle); | |
1912 | ||
1913 | if (monitor->state != ADV_MONITOR_STATE_NOT_REGISTERED) { | |
1914 | hdev->adv_monitors_cnt--; | |
1915 | mgmt_adv_monitor_removed(hdev, monitor->handle); | |
1916 | } | |
b139553d MC |
1917 | |
1918 | kfree(monitor); | |
1919 | } | |
1920 | ||
a2a4dedf AP |
1921 | /* Assigns handle to a monitor, and if offloading is supported and power is on, |
1922 | * also attempts to forward the request to the controller. | |
b747a836 | 1923 | * This function requires the caller holds hci_req_sync_lock. |
a2a4dedf | 1924 | */ |
b747a836 | 1925 | int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) |
b139553d MC |
1926 | { |
1927 | int min, max, handle; | |
b747a836 | 1928 | int status = 0; |
b139553d | 1929 | |
b747a836 MM |
1930 | if (!monitor) |
1931 | return -EINVAL; | |
a2a4dedf | 1932 | |
b747a836 | 1933 | hci_dev_lock(hdev); |
b139553d MC |
1934 | |
1935 | min = HCI_MIN_ADV_MONITOR_HANDLE; | |
1936 | max = HCI_MIN_ADV_MONITOR_HANDLE + HCI_MAX_ADV_MONITOR_NUM_HANDLES; | |
1937 | handle = idr_alloc(&hdev->adv_monitors_idr, monitor, min, max, | |
1938 | GFP_KERNEL); | |
b747a836 MM |
1939 | |
1940 | hci_dev_unlock(hdev); | |
1941 | ||
1942 | if (handle < 0) | |
1943 | return handle; | |
b139553d | 1944 | |
b139553d | 1945 | monitor->handle = handle; |
8208f5a9 | 1946 | |
a2a4dedf | 1947 | if (!hdev_is_powered(hdev)) |
b747a836 | 1948 | return status; |
8208f5a9 | 1949 | |
a2a4dedf AP |
1950 | switch (hci_get_adv_monitor_offload_ext(hdev)) { |
1951 | case HCI_ADV_MONITOR_EXT_NONE: | |
b747a836 MM |
1952 | bt_dev_dbg(hdev, "%s add monitor %d status %d", hdev->name, |
1953 | monitor->handle, status); | |
a2a4dedf | 1954 | /* Message was not forwarded to controller - not an error */ |
b747a836 MM |
1955 | break; |
1956 | ||
a2a4dedf | 1957 | case HCI_ADV_MONITOR_EXT_MSFT: |
b747a836 MM |
1958 | status = msft_add_monitor_pattern(hdev, monitor); |
1959 | bt_dev_dbg(hdev, "%s add monitor %d msft status %d", hdev->name, | |
1960 | monitor->handle, status); | |
a2a4dedf AP |
1961 | break; |
1962 | } | |
1963 | ||
b747a836 | 1964 | return status; |
b139553d MC |
1965 | } |
1966 | ||
66bd095a AP |
1967 | /* Attempts to tell the controller and free the monitor. If somehow the |
1968 | * controller doesn't have a corresponding handle, remove anyway. | |
7cf5c297 | 1969 | * This function requires the caller holds hci_req_sync_lock. |
66bd095a | 1970 | */ |
7cf5c297 MM |
1971 | static int hci_remove_adv_monitor(struct hci_dev *hdev, |
1972 | struct adv_monitor *monitor) | |
bd2fbc6c | 1973 | { |
7cf5c297 | 1974 | int status = 0; |
bd2fbc6c | 1975 | |
66bd095a AP |
1976 | switch (hci_get_adv_monitor_offload_ext(hdev)) { |
1977 | case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */ | |
7cf5c297 MM |
1978 | bt_dev_dbg(hdev, "%s remove monitor %d status %d", hdev->name, |
1979 | monitor->handle, status); | |
66bd095a | 1980 | goto free_monitor; |
7cf5c297 | 1981 | |
66bd095a | 1982 | case HCI_ADV_MONITOR_EXT_MSFT: |
7cf5c297 MM |
1983 | status = msft_remove_monitor(hdev, monitor); |
1984 | bt_dev_dbg(hdev, "%s remove monitor %d msft status %d", | |
1985 | hdev->name, monitor->handle, status); | |
66bd095a AP |
1986 | break; |
1987 | } | |
bd2fbc6c | 1988 | |
66bd095a | 1989 | /* In case no matching handle registered, just free the monitor */ |
7cf5c297 | 1990 | if (status == -ENOENT) |
66bd095a AP |
1991 | goto free_monitor; |
1992 | ||
7cf5c297 | 1993 | return status; |
66bd095a AP |
1994 | |
1995 | free_monitor: | |
7cf5c297 | 1996 | if (status == -ENOENT) |
66bd095a AP |
1997 | bt_dev_warn(hdev, "Removing monitor with no matching handle %d", |
1998 | monitor->handle); | |
1999 | hci_free_adv_monitor(hdev, monitor); | |
2000 | ||
7cf5c297 | 2001 | return status; |
bd2fbc6c MC |
2002 | } |
2003 | ||
7cf5c297 MM |
2004 | /* This function requires the caller holds hci_req_sync_lock */ |
2005 | int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle) | |
66bd095a AP |
2006 | { |
2007 | struct adv_monitor *monitor = idr_find(&hdev->adv_monitors_idr, handle); | |
66bd095a | 2008 | |
7cf5c297 MM |
2009 | if (!monitor) |
2010 | return -EINVAL; | |
66bd095a | 2011 | |
7cf5c297 | 2012 | return hci_remove_adv_monitor(hdev, monitor); |
66bd095a AP |
2013 | } |
2014 | ||
7cf5c297 MM |
2015 | /* This function requires the caller holds hci_req_sync_lock */ |
2016 | int hci_remove_all_adv_monitor(struct hci_dev *hdev) | |
bd2fbc6c MC |
2017 | { |
2018 | struct adv_monitor *monitor; | |
66bd095a | 2019 | int idr_next_id = 0; |
7cf5c297 | 2020 | int status = 0; |
66bd095a | 2021 | |
7cf5c297 | 2022 | while (1) { |
66bd095a | 2023 | monitor = idr_get_next(&hdev->adv_monitors_idr, &idr_next_id); |
bd2fbc6c | 2024 | if (!monitor) |
66bd095a | 2025 | break; |
bd2fbc6c | 2026 | |
7cf5c297 MM |
2027 | status = hci_remove_adv_monitor(hdev, monitor); |
2028 | if (status) | |
2029 | return status; | |
66bd095a | 2030 | |
7cf5c297 | 2031 | idr_next_id++; |
bd2fbc6c MC |
2032 | } |
2033 | ||
7cf5c297 | 2034 | return status; |
bd2fbc6c MC |
2035 | } |
2036 | ||
8208f5a9 MC |
2037 | /* This function requires the caller holds hdev->lock */ |
2038 | bool hci_is_adv_monitoring(struct hci_dev *hdev) | |
2039 | { | |
2040 | return !idr_is_empty(&hdev->adv_monitors_idr); | |
2041 | } | |
2042 | ||
a2a4dedf AP |
2043 | int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev) |
2044 | { | |
2045 | if (msft_monitor_supported(hdev)) | |
2046 | return HCI_ADV_MONITOR_EXT_MSFT; | |
2047 | ||
2048 | return HCI_ADV_MONITOR_EXT_NONE; | |
2049 | } | |
2050 | ||
dcc36c16 | 2051 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2052 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2053 | { |
8035ded4 | 2054 | struct bdaddr_list *b; |
b2a66aad | 2055 | |
dcc36c16 | 2056 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2057 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2058 | return b; |
b9ee0a78 | 2059 | } |
b2a66aad AJ |
2060 | |
2061 | return NULL; | |
2062 | } | |
2063 | ||
b950aa88 AN |
2064 | struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( |
2065 | struct list_head *bdaddr_list, bdaddr_t *bdaddr, | |
2066 | u8 type) | |
2067 | { | |
2068 | struct bdaddr_list_with_irk *b; | |
2069 | ||
2070 | list_for_each_entry(b, bdaddr_list, list) { | |
2071 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
2072 | return b; | |
2073 | } | |
2074 | ||
2075 | return NULL; | |
2076 | } | |
2077 | ||
8baaa403 APS |
2078 | struct bdaddr_list_with_flags * |
2079 | hci_bdaddr_list_lookup_with_flags(struct list_head *bdaddr_list, | |
2080 | bdaddr_t *bdaddr, u8 type) | |
2081 | { | |
2082 | struct bdaddr_list_with_flags *b; | |
2083 | ||
2084 | list_for_each_entry(b, bdaddr_list, list) { | |
2085 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
2086 | return b; | |
2087 | } | |
2088 | ||
2089 | return NULL; | |
2090 | } | |
2091 | ||
dcc36c16 | 2092 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2093 | { |
7eb7404f | 2094 | struct bdaddr_list *b, *n; |
b2a66aad | 2095 | |
7eb7404f GT |
2096 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2097 | list_del(&b->list); | |
b2a66aad AJ |
2098 | kfree(b); |
2099 | } | |
b2a66aad AJ |
2100 | } |
2101 | ||
dcc36c16 | 2102 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2103 | { |
2104 | struct bdaddr_list *entry; | |
b2a66aad | 2105 | |
b9ee0a78 | 2106 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2107 | return -EBADF; |
2108 | ||
dcc36c16 | 2109 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2110 | return -EEXIST; |
b2a66aad | 2111 | |
27f70f3e | 2112 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2113 | if (!entry) |
2114 | return -ENOMEM; | |
b2a66aad AJ |
2115 | |
2116 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2117 | entry->bdaddr_type = type; |
b2a66aad | 2118 | |
dcc36c16 | 2119 | list_add(&entry->list, list); |
b2a66aad | 2120 | |
2a8357f2 | 2121 | return 0; |
b2a66aad AJ |
2122 | } |
2123 | ||
b950aa88 AN |
2124 | int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
2125 | u8 type, u8 *peer_irk, u8 *local_irk) | |
2126 | { | |
2127 | struct bdaddr_list_with_irk *entry; | |
2128 | ||
2129 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
2130 | return -EBADF; | |
2131 | ||
2132 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) | |
2133 | return -EEXIST; | |
2134 | ||
2135 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
2136 | if (!entry) | |
2137 | return -ENOMEM; | |
2138 | ||
2139 | bacpy(&entry->bdaddr, bdaddr); | |
2140 | entry->bdaddr_type = type; | |
2141 | ||
2142 | if (peer_irk) | |
2143 | memcpy(entry->peer_irk, peer_irk, 16); | |
2144 | ||
2145 | if (local_irk) | |
2146 | memcpy(entry->local_irk, local_irk, 16); | |
2147 | ||
2148 | list_add(&entry->list, list); | |
2149 | ||
2150 | return 0; | |
2151 | } | |
2152 | ||
8baaa403 APS |
2153 | int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, |
2154 | u8 type, u32 flags) | |
2155 | { | |
2156 | struct bdaddr_list_with_flags *entry; | |
2157 | ||
2158 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
2159 | return -EBADF; | |
2160 | ||
2161 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) | |
2162 | return -EEXIST; | |
2163 | ||
2164 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
2165 | if (!entry) | |
2166 | return -ENOMEM; | |
2167 | ||
2168 | bacpy(&entry->bdaddr, bdaddr); | |
2169 | entry->bdaddr_type = type; | |
e1cff700 | 2170 | entry->flags = flags; |
8baaa403 APS |
2171 | |
2172 | list_add(&entry->list, list); | |
2173 | ||
2174 | return 0; | |
2175 | } | |
2176 | ||
dcc36c16 | 2177 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2178 | { |
2179 | struct bdaddr_list *entry; | |
b2a66aad | 2180 | |
35f7498a | 2181 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2182 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2183 | return 0; |
2184 | } | |
b2a66aad | 2185 | |
dcc36c16 | 2186 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2187 | if (!entry) |
2188 | return -ENOENT; | |
2189 | ||
2190 | list_del(&entry->list); | |
2191 | kfree(entry); | |
2192 | ||
2193 | return 0; | |
2194 | } | |
2195 | ||
b950aa88 AN |
2196 | int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
2197 | u8 type) | |
2198 | { | |
2199 | struct bdaddr_list_with_irk *entry; | |
2200 | ||
2201 | if (!bacmp(bdaddr, BDADDR_ANY)) { | |
2202 | hci_bdaddr_list_clear(list); | |
2203 | return 0; | |
2204 | } | |
2205 | ||
2206 | entry = hci_bdaddr_list_lookup_with_irk(list, bdaddr, type); | |
2207 | if (!entry) | |
2208 | return -ENOENT; | |
2209 | ||
2210 | list_del(&entry->list); | |
2211 | kfree(entry); | |
2212 | ||
2213 | return 0; | |
2214 | } | |
2215 | ||
8baaa403 APS |
2216 | int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, |
2217 | u8 type) | |
2218 | { | |
2219 | struct bdaddr_list_with_flags *entry; | |
2220 | ||
2221 | if (!bacmp(bdaddr, BDADDR_ANY)) { | |
2222 | hci_bdaddr_list_clear(list); | |
2223 | return 0; | |
2224 | } | |
2225 | ||
2226 | entry = hci_bdaddr_list_lookup_with_flags(list, bdaddr, type); | |
2227 | if (!entry) | |
2228 | return -ENOENT; | |
2229 | ||
2230 | list_del(&entry->list); | |
2231 | kfree(entry); | |
2232 | ||
2233 | return 0; | |
2234 | } | |
2235 | ||
15819a70 AG |
2236 | /* This function requires the caller holds hdev->lock */ |
2237 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2238 | bdaddr_t *addr, u8 addr_type) | |
2239 | { | |
2240 | struct hci_conn_params *params; | |
2241 | ||
2242 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2243 | if (bacmp(¶ms->addr, addr) == 0 && | |
2244 | params->addr_type == addr_type) { | |
2245 | return params; | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | return NULL; | |
2250 | } | |
2251 | ||
4b10966f | 2252 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2253 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2254 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2255 | { |
912b42ef | 2256 | struct hci_conn_params *param; |
a9b0a04c | 2257 | |
501f8827 | 2258 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2259 | if (bacmp(¶m->addr, addr) == 0 && |
2260 | param->addr_type == addr_type) | |
2261 | return param; | |
4b10966f MH |
2262 | } |
2263 | ||
2264 | return NULL; | |
a9b0a04c AG |
2265 | } |
2266 | ||
15819a70 | 2267 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2268 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2269 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2270 | { |
2271 | struct hci_conn_params *params; | |
2272 | ||
2273 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2274 | if (params) |
51d167c0 | 2275 | return params; |
15819a70 AG |
2276 | |
2277 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2278 | if (!params) { | |
2064ee33 | 2279 | bt_dev_err(hdev, "out of memory"); |
51d167c0 | 2280 | return NULL; |
15819a70 AG |
2281 | } |
2282 | ||
2283 | bacpy(¶ms->addr, addr); | |
2284 | params->addr_type = addr_type; | |
cef952ce AG |
2285 | |
2286 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2287 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2288 | |
bf5b3c8b MH |
2289 | params->conn_min_interval = hdev->le_conn_min_interval; |
2290 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2291 | params->conn_latency = hdev->le_conn_latency; | |
2292 | params->supervision_timeout = hdev->le_supv_timeout; | |
2293 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2294 | ||
2295 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2296 | ||
51d167c0 | 2297 | return params; |
bf5b3c8b MH |
2298 | } |
2299 | ||
f6c63249 | 2300 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2301 | { |
f8aaf9b6 | 2302 | if (params->conn) { |
f161dd41 | 2303 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2304 | hci_conn_put(params->conn); |
2305 | } | |
f161dd41 | 2306 | |
95305baa | 2307 | list_del(¶ms->action); |
15819a70 AG |
2308 | list_del(¶ms->list); |
2309 | kfree(params); | |
f6c63249 JH |
2310 | } |
2311 | ||
2312 | /* This function requires the caller holds hdev->lock */ | |
2313 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2314 | { | |
2315 | struct hci_conn_params *params; | |
2316 | ||
2317 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2318 | if (!params) | |
2319 | return; | |
2320 | ||
2321 | hci_conn_params_free(params); | |
15819a70 | 2322 | |
5bee2fd6 | 2323 | hci_update_passive_scan(hdev); |
95305baa | 2324 | |
15819a70 AG |
2325 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2326 | } | |
2327 | ||
2328 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2329 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2330 | { |
2331 | struct hci_conn_params *params, *tmp; | |
2332 | ||
2333 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2334 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2335 | continue; | |
f75113a2 | 2336 | |
91641b79 | 2337 | /* If trying to establish one time connection to disabled |
f75113a2 JP |
2338 | * device, leave the params, but mark them as just once. |
2339 | */ | |
2340 | if (params->explicit_connect) { | |
2341 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2342 | continue; | |
2343 | } | |
2344 | ||
15819a70 AG |
2345 | list_del(¶ms->list); |
2346 | kfree(params); | |
2347 | } | |
2348 | ||
55af49a8 | 2349 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2350 | } |
2351 | ||
2352 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2353 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2354 | { |
15819a70 | 2355 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2356 | |
f6c63249 JH |
2357 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2358 | hci_conn_params_free(params); | |
77a77a30 | 2359 | |
15819a70 | 2360 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2361 | } |
2362 | ||
a1f4c318 JH |
2363 | /* Copy the Identity Address of the controller. |
2364 | * | |
2365 | * If the controller has a public BD_ADDR, then by default use that one. | |
2366 | * If this is a LE only controller without a public address, default to | |
2367 | * the static random address. | |
2368 | * | |
2369 | * For debugging purposes it is possible to force controllers with a | |
2370 | * public address to use the static random address instead. | |
50b5b952 MH |
2371 | * |
2372 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2373 | * userspace has configured a static address, then that address | |
2374 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2375 | */ |
2376 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2377 | u8 *bdaddr_type) | |
2378 | { | |
b7cb93e5 | 2379 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2380 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2381 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2382 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2383 | bacpy(bdaddr, &hdev->static_addr); |
2384 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2385 | } else { | |
2386 | bacpy(bdaddr, &hdev->bdaddr); | |
2387 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2388 | } | |
2389 | } | |
2390 | ||
2f20216c APS |
2391 | static void hci_clear_wake_reason(struct hci_dev *hdev) |
2392 | { | |
2393 | hci_dev_lock(hdev); | |
2394 | ||
2395 | hdev->wake_reason = 0; | |
2396 | bacpy(&hdev->wake_addr, BDADDR_ANY); | |
2397 | hdev->wake_addr_type = 0; | |
2398 | ||
2399 | hci_dev_unlock(hdev); | |
2400 | } | |
2401 | ||
9952d90e APS |
2402 | static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, |
2403 | void *data) | |
2404 | { | |
2405 | struct hci_dev *hdev = | |
2406 | container_of(nb, struct hci_dev, suspend_notifier); | |
2407 | int ret = 0; | |
9952d90e | 2408 | |
4b8af331 APS |
2409 | /* Userspace has full control of this device. Do nothing. */ |
2410 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
2411 | return NOTIFY_DONE; | |
2412 | ||
e1b77d68 LAD |
2413 | if (action == PM_SUSPEND_PREPARE) |
2414 | ret = hci_suspend_dev(hdev); | |
2415 | else if (action == PM_POST_SUSPEND) | |
2416 | ret = hci_resume_dev(hdev); | |
2f20216c | 2417 | |
a9ec8423 APS |
2418 | if (ret) |
2419 | bt_dev_err(hdev, "Suspend notifier action (%lu) failed: %d", | |
2420 | action, ret); | |
2421 | ||
24b06572 | 2422 | return NOTIFY_DONE; |
9952d90e | 2423 | } |
8731840a | 2424 | |
9be0dab7 | 2425 | /* Alloc HCI device */ |
6ec56613 | 2426 | struct hci_dev *hci_alloc_dev_priv(int sizeof_priv) |
9be0dab7 DH |
2427 | { |
2428 | struct hci_dev *hdev; | |
6ec56613 | 2429 | unsigned int alloc_size; |
9be0dab7 | 2430 | |
6ec56613 THJA |
2431 | alloc_size = sizeof(*hdev); |
2432 | if (sizeof_priv) { | |
2433 | /* Fixme: May need ALIGN-ment? */ | |
2434 | alloc_size += sizeof_priv; | |
2435 | } | |
9be0dab7 | 2436 | |
6ec56613 | 2437 | hdev = kzalloc(alloc_size, GFP_KERNEL); |
9be0dab7 DH |
2438 | if (!hdev) |
2439 | return NULL; | |
2440 | ||
b1b813d4 DH |
2441 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2442 | hdev->esco_type = (ESCO_HV1); | |
2443 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2444 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2445 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2446 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2447 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2448 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2449 | hdev->adv_instance_cnt = 0; |
2450 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2451 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2452 | |
c4f1f408 HC |
2453 | hdev->advmon_allowlist_duration = 300; |
2454 | hdev->advmon_no_filter_duration = 500; | |
80af16a3 | 2455 | hdev->enable_advmon_interleave_scan = 0x00; /* Default to disable */ |
c4f1f408 | 2456 | |
b1b813d4 DH |
2457 | hdev->sniff_max_interval = 800; |
2458 | hdev->sniff_min_interval = 80; | |
2459 | ||
3f959d46 | 2460 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2461 | hdev->le_adv_min_interval = 0x0800; |
2462 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2463 | hdev->le_scan_interval = 0x0060; |
2464 | hdev->le_scan_window = 0x0030; | |
10873f99 AM |
2465 | hdev->le_scan_int_suspend = 0x0400; |
2466 | hdev->le_scan_window_suspend = 0x0012; | |
2467 | hdev->le_scan_int_discovery = DISCOV_LE_SCAN_INT; | |
2468 | hdev->le_scan_window_discovery = DISCOV_LE_SCAN_WIN; | |
ba29d036 MH |
2469 | hdev->le_scan_int_adv_monitor = 0x0060; |
2470 | hdev->le_scan_window_adv_monitor = 0x0030; | |
10873f99 AM |
2471 | hdev->le_scan_int_connect = 0x0060; |
2472 | hdev->le_scan_window_connect = 0x0060; | |
b48c3b59 JH |
2473 | hdev->le_conn_min_interval = 0x0018; |
2474 | hdev->le_conn_max_interval = 0x0028; | |
04fb7d90 MH |
2475 | hdev->le_conn_latency = 0x0000; |
2476 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2477 | hdev->le_def_tx_len = 0x001b; |
2478 | hdev->le_def_tx_time = 0x0148; | |
2479 | hdev->le_max_tx_len = 0x001b; | |
2480 | hdev->le_max_tx_time = 0x0148; | |
2481 | hdev->le_max_rx_len = 0x001b; | |
2482 | hdev->le_max_rx_time = 0x0148; | |
30d65e08 MK |
2483 | hdev->le_max_key_size = SMP_MAX_ENC_KEY_SIZE; |
2484 | hdev->le_min_key_size = SMP_MIN_ENC_KEY_SIZE; | |
6decb5b4 JK |
2485 | hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M; |
2486 | hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M; | |
1d0fac2c | 2487 | hdev->le_num_of_adv_sets = HCI_MAX_ADV_INSTANCES; |
10873f99 | 2488 | hdev->def_multi_adv_rotation_duration = HCI_DEFAULT_ADV_DURATION; |
49b020c1 | 2489 | hdev->def_le_autoconnect_timeout = HCI_LE_AUTOCONN_TIMEOUT; |
7c395ea5 DW |
2490 | hdev->min_le_tx_power = HCI_TX_POWER_INVALID; |
2491 | hdev->max_le_tx_power = HCI_TX_POWER_INVALID; | |
bef64738 | 2492 | |
d6bfd59c | 2493 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2494 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2495 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2496 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
302975cb | 2497 | hdev->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT; |
58a96fc3 | 2498 | hdev->min_enc_key_size = HCI_MIN_ENC_KEY_SIZE; |
d6bfd59c | 2499 | |
10873f99 AM |
2500 | /* default 1.28 sec page scan */ |
2501 | hdev->def_page_scan_type = PAGE_SCAN_TYPE_STANDARD; | |
2502 | hdev->def_page_scan_int = 0x0800; | |
2503 | hdev->def_page_scan_window = 0x0012; | |
2504 | ||
b1b813d4 DH |
2505 | mutex_init(&hdev->lock); |
2506 | mutex_init(&hdev->req_lock); | |
2507 | ||
b338d917 | 2508 | INIT_LIST_HEAD(&hdev->mesh_pending); |
b1b813d4 | 2509 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
3d4f9c00 AP |
2510 | INIT_LIST_HEAD(&hdev->reject_list); |
2511 | INIT_LIST_HEAD(&hdev->accept_list); | |
b1b813d4 DH |
2512 | INIT_LIST_HEAD(&hdev->uuids); |
2513 | INIT_LIST_HEAD(&hdev->link_keys); | |
2514 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2515 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2516 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
3d4f9c00 | 2517 | INIT_LIST_HEAD(&hdev->le_accept_list); |
cfdb0c2d | 2518 | INIT_LIST_HEAD(&hdev->le_resolv_list); |
15819a70 | 2519 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2520 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2521 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2522 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 2523 | INIT_LIST_HEAD(&hdev->adv_instances); |
600a8749 | 2524 | INIT_LIST_HEAD(&hdev->blocked_keys); |
3368aa35 | 2525 | INIT_LIST_HEAD(&hdev->monitored_devices); |
b1b813d4 | 2526 | |
8961987f | 2527 | INIT_LIST_HEAD(&hdev->local_codecs); |
b1b813d4 DH |
2528 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
2529 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2530 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2531 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2532 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2533 | |
6a98e383 MH |
2534 | hci_cmd_sync_init(hdev); |
2535 | ||
b1b813d4 | 2536 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 2537 | |
b1b813d4 DH |
2538 | skb_queue_head_init(&hdev->rx_q); |
2539 | skb_queue_head_init(&hdev->cmd_q); | |
2540 | skb_queue_head_init(&hdev->raw_q); | |
2541 | ||
2542 | init_waitqueue_head(&hdev->req_wait_q); | |
2543 | ||
65cc2b49 | 2544 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
de75cd0d | 2545 | INIT_DELAYED_WORK(&hdev->ncmd_timer, hci_ncmd_timeout); |
b1b813d4 | 2546 | |
5fc16cc4 JH |
2547 | hci_request_setup(hdev); |
2548 | ||
b1b813d4 DH |
2549 | hci_init_sysfs(hdev); |
2550 | discovery_init(hdev); | |
9be0dab7 DH |
2551 | |
2552 | return hdev; | |
2553 | } | |
6ec56613 | 2554 | EXPORT_SYMBOL(hci_alloc_dev_priv); |
9be0dab7 DH |
2555 | |
2556 | /* Free HCI device */ | |
2557 | void hci_free_dev(struct hci_dev *hdev) | |
2558 | { | |
9be0dab7 DH |
2559 | /* will free via device release */ |
2560 | put_device(&hdev->dev); | |
2561 | } | |
2562 | EXPORT_SYMBOL(hci_free_dev); | |
2563 | ||
1da177e4 LT |
2564 | /* Register HCI device */ |
2565 | int hci_register_dev(struct hci_dev *hdev) | |
2566 | { | |
b1b813d4 | 2567 | int id, error; |
1da177e4 | 2568 | |
74292d5a | 2569 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
2570 | return -EINVAL; |
2571 | ||
08add513 MM |
2572 | /* Do not allow HCI_AMP devices to register at index 0, |
2573 | * so the index can be used as the AMP controller ID. | |
2574 | */ | |
3df92b31 | 2575 | switch (hdev->dev_type) { |
ca8bee5d | 2576 | case HCI_PRIMARY: |
103a2f32 | 2577 | id = ida_simple_get(&hci_index_ida, 0, HCI_MAX_ID, GFP_KERNEL); |
3df92b31 SL |
2578 | break; |
2579 | case HCI_AMP: | |
103a2f32 | 2580 | id = ida_simple_get(&hci_index_ida, 1, HCI_MAX_ID, GFP_KERNEL); |
3df92b31 SL |
2581 | break; |
2582 | default: | |
2583 | return -EINVAL; | |
1da177e4 | 2584 | } |
8e87d142 | 2585 | |
3df92b31 SL |
2586 | if (id < 0) |
2587 | return id; | |
2588 | ||
103a2f32 | 2589 | snprintf(hdev->name, sizeof(hdev->name), "hci%d", id); |
1da177e4 | 2590 | hdev->id = id; |
2d8b3a11 AE |
2591 | |
2592 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2593 | ||
29e2dd0d | 2594 | hdev->workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, hdev->name); |
33ca954d DH |
2595 | if (!hdev->workqueue) { |
2596 | error = -ENOMEM; | |
2597 | goto err; | |
2598 | } | |
f48fd9c8 | 2599 | |
29e2dd0d TH |
2600 | hdev->req_workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, |
2601 | hdev->name); | |
6ead1bbc JH |
2602 | if (!hdev->req_workqueue) { |
2603 | destroy_workqueue(hdev->workqueue); | |
2604 | error = -ENOMEM; | |
2605 | goto err; | |
2606 | } | |
2607 | ||
0153e2ec MH |
2608 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
2609 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
2610 | ||
bdc3e0f1 MH |
2611 | dev_set_name(&hdev->dev, "%s", hdev->name); |
2612 | ||
2613 | error = device_add(&hdev->dev); | |
33ca954d | 2614 | if (error < 0) |
54506918 | 2615 | goto err_wqueue; |
1da177e4 | 2616 | |
6d5d2ee6 HK |
2617 | hci_leds_init(hdev); |
2618 | ||
611b30f7 | 2619 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2620 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2621 | hdev); | |
611b30f7 MH |
2622 | if (hdev->rfkill) { |
2623 | if (rfkill_register(hdev->rfkill) < 0) { | |
2624 | rfkill_destroy(hdev->rfkill); | |
2625 | hdev->rfkill = NULL; | |
2626 | } | |
2627 | } | |
2628 | ||
5e130367 | 2629 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 2630 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 2631 | |
a1536da2 MH |
2632 | hci_dev_set_flag(hdev, HCI_SETUP); |
2633 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 2634 | |
ca8bee5d | 2635 | if (hdev->dev_type == HCI_PRIMARY) { |
56f87901 JH |
2636 | /* Assume BR/EDR support until proven otherwise (such as |
2637 | * through reading supported features during init. | |
2638 | */ | |
a1536da2 | 2639 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 2640 | } |
ce2be9ac | 2641 | |
fcee3377 GP |
2642 | write_lock(&hci_dev_list_lock); |
2643 | list_add(&hdev->list, &hci_dev_list); | |
2644 | write_unlock(&hci_dev_list_lock); | |
2645 | ||
4a964404 MH |
2646 | /* Devices that are marked for raw-only usage are unconfigured |
2647 | * and should not be included in normal operation. | |
fee746b0 MH |
2648 | */ |
2649 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 2650 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 2651 | |
fe92ee64 LAD |
2652 | /* Mark Remote Wakeup connection flag as supported if driver has wakeup |
2653 | * callback. | |
2654 | */ | |
2655 | if (hdev->wakeup) | |
e1cff700 | 2656 | hdev->conn_flags |= HCI_CONN_FLAG_REMOTE_WAKEUP; |
fe92ee64 | 2657 | |
05fcd4c4 | 2658 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 2659 | hci_dev_hold(hdev); |
1da177e4 | 2660 | |
91117864 DC |
2661 | error = hci_register_suspend_notifier(hdev); |
2662 | if (error) | |
0d75da38 | 2663 | BT_WARN("register suspend notifier failed error:%d\n", error); |
9952d90e | 2664 | |
19202573 | 2665 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2666 | |
e5e1e7fd | 2667 | idr_init(&hdev->adv_monitors_idr); |
5031ffcc | 2668 | msft_register(hdev); |
e5e1e7fd | 2669 | |
1da177e4 | 2670 | return id; |
f48fd9c8 | 2671 | |
33ca954d | 2672 | err_wqueue: |
5a4bb6a8 | 2673 | debugfs_remove_recursive(hdev->debugfs); |
33ca954d | 2674 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2675 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2676 | err: |
3df92b31 | 2677 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 2678 | |
33ca954d | 2679 | return error; |
1da177e4 LT |
2680 | } |
2681 | EXPORT_SYMBOL(hci_register_dev); | |
2682 | ||
2683 | /* Unregister HCI device */ | |
59735631 | 2684 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2685 | { |
c13854ce | 2686 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2687 | |
a1536da2 | 2688 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 2689 | |
f20d09d5 | 2690 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2691 | list_del(&hdev->list); |
f20d09d5 | 2692 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 2693 | |
e36bea6e VV |
2694 | cancel_work_sync(&hdev->power_on); |
2695 | ||
6a98e383 MH |
2696 | hci_cmd_sync_clear(hdev); |
2697 | ||
359ee4f8 | 2698 | hci_unregister_suspend_notifier(hdev); |
4e8c36c3 | 2699 | |
5031ffcc MC |
2700 | msft_unregister(hdev); |
2701 | ||
4e8c36c3 | 2702 | hci_dev_do_close(hdev); |
9952d90e | 2703 | |
ab81cbf9 | 2704 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
2705 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
2706 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 2707 | hci_dev_lock(hdev); |
744cf19e | 2708 | mgmt_index_removed(hdev); |
09fd0de5 | 2709 | hci_dev_unlock(hdev); |
56e5cb86 | 2710 | } |
ab81cbf9 | 2711 | |
2e58ef3e JH |
2712 | /* mgmt_index_removed should take care of emptying the |
2713 | * pending list */ | |
2714 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2715 | ||
05fcd4c4 | 2716 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 2717 | |
611b30f7 MH |
2718 | if (hdev->rfkill) { |
2719 | rfkill_unregister(hdev->rfkill); | |
2720 | rfkill_destroy(hdev->rfkill); | |
2721 | } | |
2722 | ||
bdc3e0f1 | 2723 | device_del(&hdev->dev); |
e61fbee7 | 2724 | /* Actual cleanup is deferred until hci_release_dev(). */ |
e0448092 TH |
2725 | hci_dev_put(hdev); |
2726 | } | |
2727 | EXPORT_SYMBOL(hci_unregister_dev); | |
147e2d59 | 2728 | |
58ce6d5b TH |
2729 | /* Release HCI device */ |
2730 | void hci_release_dev(struct hci_dev *hdev) | |
e0448092 | 2731 | { |
0153e2ec | 2732 | debugfs_remove_recursive(hdev->debugfs); |
5177a838 MH |
2733 | kfree_const(hdev->hw_info); |
2734 | kfree_const(hdev->fw_info); | |
0153e2ec | 2735 | |
f48fd9c8 | 2736 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2737 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2738 | |
09fd0de5 | 2739 | hci_dev_lock(hdev); |
3d4f9c00 AP |
2740 | hci_bdaddr_list_clear(&hdev->reject_list); |
2741 | hci_bdaddr_list_clear(&hdev->accept_list); | |
2aeb9a1a | 2742 | hci_uuids_clear(hdev); |
55ed8ca1 | 2743 | hci_link_keys_clear(hdev); |
b899efaf | 2744 | hci_smp_ltks_clear(hdev); |
970c4e46 | 2745 | hci_smp_irks_clear(hdev); |
2763eda6 | 2746 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 2747 | hci_adv_instances_clear(hdev); |
e5e1e7fd | 2748 | hci_adv_monitors_clear(hdev); |
3d4f9c00 | 2749 | hci_bdaddr_list_clear(&hdev->le_accept_list); |
cfdb0c2d | 2750 | hci_bdaddr_list_clear(&hdev->le_resolv_list); |
373110c5 | 2751 | hci_conn_params_clear_all(hdev); |
22078800 | 2752 | hci_discovery_filter_clear(hdev); |
600a8749 | 2753 | hci_blocked_keys_clear(hdev); |
09fd0de5 | 2754 | hci_dev_unlock(hdev); |
e2e0cacb | 2755 | |
e0448092 | 2756 | ida_simple_remove(&hci_index_ida, hdev->id); |
dd3b1dc3 | 2757 | kfree_skb(hdev->sent_cmd); |
dfe6d5c3 | 2758 | kfree_skb(hdev->recv_event); |
58ce6d5b | 2759 | kfree(hdev); |
1da177e4 | 2760 | } |
58ce6d5b | 2761 | EXPORT_SYMBOL(hci_release_dev); |
1da177e4 | 2762 | |
359ee4f8 APS |
2763 | int hci_register_suspend_notifier(struct hci_dev *hdev) |
2764 | { | |
2765 | int ret = 0; | |
2766 | ||
b5ca3387 LAD |
2767 | if (!hdev->suspend_notifier.notifier_call && |
2768 | !test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) { | |
359ee4f8 APS |
2769 | hdev->suspend_notifier.notifier_call = hci_suspend_notifier; |
2770 | ret = register_pm_notifier(&hdev->suspend_notifier); | |
2771 | } | |
2772 | ||
2773 | return ret; | |
2774 | } | |
2775 | ||
2776 | int hci_unregister_suspend_notifier(struct hci_dev *hdev) | |
2777 | { | |
2778 | int ret = 0; | |
2779 | ||
b5ca3387 | 2780 | if (hdev->suspend_notifier.notifier_call) { |
359ee4f8 | 2781 | ret = unregister_pm_notifier(&hdev->suspend_notifier); |
b5ca3387 LAD |
2782 | if (!ret) |
2783 | hdev->suspend_notifier.notifier_call = NULL; | |
2784 | } | |
359ee4f8 APS |
2785 | |
2786 | return ret; | |
2787 | } | |
2788 | ||
1da177e4 LT |
2789 | /* Suspend HCI device */ |
2790 | int hci_suspend_dev(struct hci_dev *hdev) | |
2791 | { | |
e1b77d68 | 2792 | int ret; |
e1b77d68 LAD |
2793 | |
2794 | bt_dev_dbg(hdev, ""); | |
2795 | ||
2796 | /* Suspend should only act on when powered. */ | |
2797 | if (!hdev_is_powered(hdev) || | |
2798 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2799 | return 0; | |
2800 | ||
182ee45d LAD |
2801 | /* If powering down don't attempt to suspend */ |
2802 | if (mgmt_powering_down(hdev)) | |
2803 | return 0; | |
4539ca67 | 2804 | |
182ee45d LAD |
2805 | hci_req_sync_lock(hdev); |
2806 | ret = hci_suspend_sync(hdev); | |
2807 | hci_req_sync_unlock(hdev); | |
e1b77d68 LAD |
2808 | |
2809 | hci_clear_wake_reason(hdev); | |
182ee45d | 2810 | mgmt_suspending(hdev, hdev->suspend_state); |
e1b77d68 | 2811 | |
05fcd4c4 | 2812 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
e1b77d68 | 2813 | return ret; |
1da177e4 LT |
2814 | } |
2815 | EXPORT_SYMBOL(hci_suspend_dev); | |
2816 | ||
2817 | /* Resume HCI device */ | |
2818 | int hci_resume_dev(struct hci_dev *hdev) | |
2819 | { | |
e1b77d68 LAD |
2820 | int ret; |
2821 | ||
2822 | bt_dev_dbg(hdev, ""); | |
2823 | ||
2824 | /* Resume should only act on when powered. */ | |
2825 | if (!hdev_is_powered(hdev) || | |
2826 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2827 | return 0; | |
2828 | ||
2829 | /* If powering down don't attempt to resume */ | |
2830 | if (mgmt_powering_down(hdev)) | |
2831 | return 0; | |
2832 | ||
182ee45d LAD |
2833 | hci_req_sync_lock(hdev); |
2834 | ret = hci_resume_sync(hdev); | |
2835 | hci_req_sync_unlock(hdev); | |
e1b77d68 LAD |
2836 | |
2837 | mgmt_resuming(hdev, hdev->wake_reason, &hdev->wake_addr, | |
182ee45d | 2838 | hdev->wake_addr_type); |
e1b77d68 | 2839 | |
05fcd4c4 | 2840 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
e1b77d68 | 2841 | return ret; |
1da177e4 LT |
2842 | } |
2843 | EXPORT_SYMBOL(hci_resume_dev); | |
2844 | ||
75e0569f MH |
2845 | /* Reset HCI device */ |
2846 | int hci_reset_dev(struct hci_dev *hdev) | |
2847 | { | |
1e4b6e91 | 2848 | static const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; |
75e0569f MH |
2849 | struct sk_buff *skb; |
2850 | ||
2851 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
2852 | if (!skb) | |
2853 | return -ENOMEM; | |
2854 | ||
d79f34e3 | 2855 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
59ae1d12 | 2856 | skb_put_data(skb, hw_err, 3); |
75e0569f | 2857 | |
de75cd0d MM |
2858 | bt_dev_err(hdev, "Injecting HCI hardware error event"); |
2859 | ||
75e0569f MH |
2860 | /* Send Hardware Error to upper stack */ |
2861 | return hci_recv_frame(hdev, skb); | |
2862 | } | |
2863 | EXPORT_SYMBOL(hci_reset_dev); | |
2864 | ||
76bca880 | 2865 | /* Receive frame from HCI drivers */ |
e1a26170 | 2866 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 2867 | { |
76bca880 | 2868 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 2869 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2870 | kfree_skb(skb); |
2871 | return -ENXIO; | |
2872 | } | |
2873 | ||
d79f34e3 MH |
2874 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
2875 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
2876 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
2877 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) { | |
fe806dce MH |
2878 | kfree_skb(skb); |
2879 | return -EINVAL; | |
2880 | } | |
2881 | ||
d82603c6 | 2882 | /* Incoming skb */ |
76bca880 MH |
2883 | bt_cb(skb)->incoming = 1; |
2884 | ||
2885 | /* Time stamp */ | |
2886 | __net_timestamp(skb); | |
2887 | ||
76bca880 | 2888 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2889 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2890 | |
76bca880 MH |
2891 | return 0; |
2892 | } | |
2893 | EXPORT_SYMBOL(hci_recv_frame); | |
2894 | ||
e875ff84 MH |
2895 | /* Receive diagnostic message from HCI drivers */ |
2896 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
2897 | { | |
581d6fd6 | 2898 | /* Mark as diagnostic packet */ |
d79f34e3 | 2899 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 2900 | |
e875ff84 MH |
2901 | /* Time stamp */ |
2902 | __net_timestamp(skb); | |
2903 | ||
581d6fd6 MH |
2904 | skb_queue_tail(&hdev->rx_q, skb); |
2905 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 2906 | |
e875ff84 MH |
2907 | return 0; |
2908 | } | |
2909 | EXPORT_SYMBOL(hci_recv_diag); | |
2910 | ||
5177a838 MH |
2911 | void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...) |
2912 | { | |
2913 | va_list vargs; | |
2914 | ||
2915 | va_start(vargs, fmt); | |
2916 | kfree_const(hdev->hw_info); | |
2917 | hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
2918 | va_end(vargs); | |
2919 | } | |
2920 | EXPORT_SYMBOL(hci_set_hw_info); | |
2921 | ||
2922 | void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...) | |
2923 | { | |
2924 | va_list vargs; | |
2925 | ||
2926 | va_start(vargs, fmt); | |
2927 | kfree_const(hdev->fw_info); | |
2928 | hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
2929 | va_end(vargs); | |
2930 | } | |
2931 | EXPORT_SYMBOL(hci_set_fw_info); | |
2932 | ||
1da177e4 LT |
2933 | /* ---- Interface to upper protocols ---- */ |
2934 | ||
1da177e4 LT |
2935 | int hci_register_cb(struct hci_cb *cb) |
2936 | { | |
2937 | BT_DBG("%p name %s", cb, cb->name); | |
2938 | ||
fba7ecf0 | 2939 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 2940 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 2941 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2942 | |
2943 | return 0; | |
2944 | } | |
2945 | EXPORT_SYMBOL(hci_register_cb); | |
2946 | ||
2947 | int hci_unregister_cb(struct hci_cb *cb) | |
2948 | { | |
2949 | BT_DBG("%p name %s", cb, cb->name); | |
2950 | ||
fba7ecf0 | 2951 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 2952 | list_del(&cb->list); |
fba7ecf0 | 2953 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2954 | |
2955 | return 0; | |
2956 | } | |
2957 | EXPORT_SYMBOL(hci_unregister_cb); | |
2958 | ||
2250abad | 2959 | static int hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 2960 | { |
cdc52faa MH |
2961 | int err; |
2962 | ||
d79f34e3 MH |
2963 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
2964 | skb->len); | |
1da177e4 | 2965 | |
cd82e61c MH |
2966 | /* Time stamp */ |
2967 | __net_timestamp(skb); | |
1da177e4 | 2968 | |
cd82e61c MH |
2969 | /* Send copy to monitor */ |
2970 | hci_send_to_monitor(hdev, skb); | |
2971 | ||
2972 | if (atomic_read(&hdev->promisc)) { | |
2973 | /* Send copy to the sockets */ | |
470fe1b5 | 2974 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2975 | } |
2976 | ||
2977 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2978 | skb_orphan(skb); | |
2979 | ||
73d0d3c8 MH |
2980 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
2981 | kfree_skb(skb); | |
2250abad | 2982 | return -EINVAL; |
73d0d3c8 MH |
2983 | } |
2984 | ||
cdc52faa MH |
2985 | err = hdev->send(hdev, skb); |
2986 | if (err < 0) { | |
2064ee33 | 2987 | bt_dev_err(hdev, "sending frame failed (%d)", err); |
cdc52faa | 2988 | kfree_skb(skb); |
2250abad | 2989 | return err; |
cdc52faa | 2990 | } |
2250abad BB |
2991 | |
2992 | return 0; | |
1da177e4 LT |
2993 | } |
2994 | ||
1ca3a9d0 | 2995 | /* Send HCI command */ |
07dc93dd JH |
2996 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2997 | const void *param) | |
1ca3a9d0 JH |
2998 | { |
2999 | struct sk_buff *skb; | |
3000 | ||
3001 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3002 | ||
3003 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3004 | if (!skb) { | |
2064ee33 | 3005 | bt_dev_err(hdev, "no memory for command"); |
1ca3a9d0 JH |
3006 | return -ENOMEM; |
3007 | } | |
3008 | ||
49c922bb | 3009 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3010 | * single-command requests. |
3011 | */ | |
44d27137 | 3012 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3013 | |
1da177e4 | 3014 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3015 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3016 | |
3017 | return 0; | |
3018 | } | |
1da177e4 | 3019 | |
d6ee6ad7 LP |
3020 | int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, |
3021 | const void *param) | |
3022 | { | |
3023 | struct sk_buff *skb; | |
3024 | ||
3025 | if (hci_opcode_ogf(opcode) != 0x3f) { | |
3026 | /* A controller receiving a command shall respond with either | |
3027 | * a Command Status Event or a Command Complete Event. | |
3028 | * Therefore, all standard HCI commands must be sent via the | |
3029 | * standard API, using hci_send_cmd or hci_cmd_sync helpers. | |
3030 | * Some vendors do not comply with this rule for vendor-specific | |
3031 | * commands and do not return any event. We want to support | |
3032 | * unresponded commands for such cases only. | |
3033 | */ | |
3034 | bt_dev_err(hdev, "unresponded command not supported"); | |
3035 | return -EINVAL; | |
3036 | } | |
3037 | ||
3038 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3039 | if (!skb) { | |
3040 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", | |
3041 | opcode); | |
3042 | return -ENOMEM; | |
3043 | } | |
3044 | ||
3045 | hci_send_frame(hdev, skb); | |
3046 | ||
3047 | return 0; | |
3048 | } | |
3049 | EXPORT_SYMBOL(__hci_cmd_send); | |
3050 | ||
1da177e4 | 3051 | /* Get data from the previously sent command */ |
a9de9248 | 3052 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3053 | { |
3054 | struct hci_command_hdr *hdr; | |
3055 | ||
3056 | if (!hdev->sent_cmd) | |
3057 | return NULL; | |
3058 | ||
3059 | hdr = (void *) hdev->sent_cmd->data; | |
3060 | ||
a9de9248 | 3061 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3062 | return NULL; |
3063 | ||
f0e09510 | 3064 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3065 | |
3066 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3067 | } | |
3068 | ||
dfe6d5c3 LAD |
3069 | /* Get data from last received event */ |
3070 | void *hci_recv_event_data(struct hci_dev *hdev, __u8 event) | |
3071 | { | |
3072 | struct hci_event_hdr *hdr; | |
3073 | int offset; | |
3074 | ||
3075 | if (!hdev->recv_event) | |
3076 | return NULL; | |
3077 | ||
3078 | hdr = (void *)hdev->recv_event->data; | |
3079 | offset = sizeof(*hdr); | |
3080 | ||
3081 | if (hdr->evt != event) { | |
3082 | /* In case of LE metaevent check the subevent match */ | |
3083 | if (hdr->evt == HCI_EV_LE_META) { | |
3084 | struct hci_ev_le_meta *ev; | |
3085 | ||
3086 | ev = (void *)hdev->recv_event->data + offset; | |
3087 | offset += sizeof(*ev); | |
3088 | if (ev->subevent == event) | |
3089 | goto found; | |
3090 | } | |
3091 | return NULL; | |
3092 | } | |
3093 | ||
3094 | found: | |
3095 | bt_dev_dbg(hdev, "event 0x%2.2x", event); | |
3096 | ||
3097 | return hdev->recv_event->data + offset; | |
3098 | } | |
3099 | ||
1da177e4 LT |
3100 | /* Send ACL data */ |
3101 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3102 | { | |
3103 | struct hci_acl_hdr *hdr; | |
3104 | int len = skb->len; | |
3105 | ||
badff6d0 ACM |
3106 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3107 | skb_reset_transport_header(skb); | |
9c70220b | 3108 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3109 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3110 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3111 | } |
3112 | ||
ee22be7e | 3113 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3114 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3115 | { |
ee22be7e | 3116 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3117 | struct hci_dev *hdev = conn->hdev; |
3118 | struct sk_buff *list; | |
3119 | ||
087bfd99 GP |
3120 | skb->len = skb_headlen(skb); |
3121 | skb->data_len = 0; | |
3122 | ||
d79f34e3 | 3123 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3124 | |
3125 | switch (hdev->dev_type) { | |
ca8bee5d | 3126 | case HCI_PRIMARY: |
204a6e54 AE |
3127 | hci_add_acl_hdr(skb, conn->handle, flags); |
3128 | break; | |
3129 | case HCI_AMP: | |
3130 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3131 | break; | |
3132 | default: | |
2064ee33 | 3133 | bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); |
204a6e54 AE |
3134 | return; |
3135 | } | |
087bfd99 | 3136 | |
70f23020 AE |
3137 | list = skb_shinfo(skb)->frag_list; |
3138 | if (!list) { | |
1da177e4 LT |
3139 | /* Non fragmented */ |
3140 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3141 | ||
73d80deb | 3142 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3143 | } else { |
3144 | /* Fragmented */ | |
3145 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3146 | ||
3147 | skb_shinfo(skb)->frag_list = NULL; | |
3148 | ||
9cfd5a23 JR |
3149 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3150 | * here because of 6LoWPAN links, as there this function is | |
3151 | * called from softirq and using normal spin lock could cause | |
3152 | * deadlocks. | |
3153 | */ | |
3154 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3155 | |
73d80deb | 3156 | __skb_queue_tail(queue, skb); |
e702112f AE |
3157 | |
3158 | flags &= ~ACL_START; | |
3159 | flags |= ACL_CONT; | |
1da177e4 LT |
3160 | do { |
3161 | skb = list; list = list->next; | |
8e87d142 | 3162 | |
d79f34e3 | 3163 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3164 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3165 | |
3166 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3167 | ||
73d80deb | 3168 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3169 | } while (list); |
3170 | ||
9cfd5a23 | 3171 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3172 | } |
73d80deb LAD |
3173 | } |
3174 | ||
3175 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3176 | { | |
ee22be7e | 3177 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3178 | |
f0e09510 | 3179 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3180 | |
ee22be7e | 3181 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3182 | |
3eff45ea | 3183 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3184 | } |
1da177e4 LT |
3185 | |
3186 | /* Send SCO data */ | |
0d861d8b | 3187 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3188 | { |
3189 | struct hci_dev *hdev = conn->hdev; | |
3190 | struct hci_sco_hdr hdr; | |
3191 | ||
3192 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3193 | ||
aca3192c | 3194 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3195 | hdr.dlen = skb->len; |
3196 | ||
badff6d0 ACM |
3197 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3198 | skb_reset_transport_header(skb); | |
9c70220b | 3199 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3200 | |
d79f34e3 | 3201 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3202 | |
1da177e4 | 3203 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3204 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3205 | } |
1da177e4 | 3206 | |
26afbd82 LAD |
3207 | /* Send ISO data */ |
3208 | static void hci_add_iso_hdr(struct sk_buff *skb, __u16 handle, __u8 flags) | |
3209 | { | |
3210 | struct hci_iso_hdr *hdr; | |
3211 | int len = skb->len; | |
3212 | ||
3213 | skb_push(skb, HCI_ISO_HDR_SIZE); | |
3214 | skb_reset_transport_header(skb); | |
3215 | hdr = (struct hci_iso_hdr *)skb_transport_header(skb); | |
3216 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); | |
3217 | hdr->dlen = cpu_to_le16(len); | |
3218 | } | |
3219 | ||
3220 | static void hci_queue_iso(struct hci_conn *conn, struct sk_buff_head *queue, | |
3221 | struct sk_buff *skb) | |
3222 | { | |
3223 | struct hci_dev *hdev = conn->hdev; | |
3224 | struct sk_buff *list; | |
3225 | __u16 flags; | |
3226 | ||
3227 | skb->len = skb_headlen(skb); | |
3228 | skb->data_len = 0; | |
3229 | ||
3230 | hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; | |
3231 | ||
3232 | list = skb_shinfo(skb)->frag_list; | |
3233 | ||
3234 | flags = hci_iso_flags_pack(list ? ISO_START : ISO_SINGLE, 0x00); | |
3235 | hci_add_iso_hdr(skb, conn->handle, flags); | |
3236 | ||
3237 | if (!list) { | |
3238 | /* Non fragmented */ | |
3239 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3240 | ||
3241 | skb_queue_tail(queue, skb); | |
3242 | } else { | |
3243 | /* Fragmented */ | |
3244 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3245 | ||
3246 | skb_shinfo(skb)->frag_list = NULL; | |
3247 | ||
3248 | __skb_queue_tail(queue, skb); | |
3249 | ||
3250 | do { | |
3251 | skb = list; list = list->next; | |
3252 | ||
3253 | hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; | |
3254 | flags = hci_iso_flags_pack(list ? ISO_CONT : ISO_END, | |
3255 | 0x00); | |
3256 | hci_add_iso_hdr(skb, conn->handle, flags); | |
3257 | ||
3258 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3259 | ||
3260 | __skb_queue_tail(queue, skb); | |
3261 | } while (list); | |
3262 | } | |
3263 | } | |
3264 | ||
3265 | void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb) | |
3266 | { | |
3267 | struct hci_dev *hdev = conn->hdev; | |
3268 | ||
3269 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3270 | ||
3271 | hci_queue_iso(conn, &conn->data_q, skb); | |
3272 | ||
3273 | queue_work(hdev->workqueue, &hdev->tx_work); | |
3274 | } | |
3275 | ||
1da177e4 LT |
3276 | /* ---- HCI TX task (outgoing data) ---- */ |
3277 | ||
3278 | /* HCI Connection scheduler */ | |
26afbd82 LAD |
3279 | static inline void hci_quote_sent(struct hci_conn *conn, int num, int *quote) |
3280 | { | |
3281 | struct hci_dev *hdev; | |
3282 | int cnt, q; | |
3283 | ||
3284 | if (!conn) { | |
3285 | *quote = 0; | |
3286 | return; | |
3287 | } | |
3288 | ||
3289 | hdev = conn->hdev; | |
3290 | ||
3291 | switch (conn->type) { | |
3292 | case ACL_LINK: | |
3293 | cnt = hdev->acl_cnt; | |
3294 | break; | |
3295 | case AMP_LINK: | |
3296 | cnt = hdev->block_cnt; | |
3297 | break; | |
3298 | case SCO_LINK: | |
3299 | case ESCO_LINK: | |
3300 | cnt = hdev->sco_cnt; | |
3301 | break; | |
3302 | case LE_LINK: | |
3303 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3304 | break; | |
3305 | case ISO_LINK: | |
3306 | cnt = hdev->iso_mtu ? hdev->iso_cnt : | |
3307 | hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3308 | break; | |
3309 | default: | |
3310 | cnt = 0; | |
3311 | bt_dev_err(hdev, "unknown link type %d", conn->type); | |
3312 | } | |
3313 | ||
3314 | q = cnt / num; | |
3315 | *quote = q ? q : 1; | |
3316 | } | |
3317 | ||
6039aa73 GP |
3318 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3319 | int *quote) | |
1da177e4 LT |
3320 | { |
3321 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3322 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3323 | unsigned int num = 0, min = ~0; |
1da177e4 | 3324 | |
8e87d142 | 3325 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3326 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3327 | |
3328 | rcu_read_lock(); | |
3329 | ||
3330 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3331 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3332 | continue; |
769be974 MH |
3333 | |
3334 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3335 | continue; | |
3336 | ||
1da177e4 LT |
3337 | num++; |
3338 | ||
3339 | if (c->sent < min) { | |
3340 | min = c->sent; | |
3341 | conn = c; | |
3342 | } | |
52087a79 LAD |
3343 | |
3344 | if (hci_conn_num(hdev, type) == num) | |
3345 | break; | |
1da177e4 LT |
3346 | } |
3347 | ||
bf4c6325 GP |
3348 | rcu_read_unlock(); |
3349 | ||
26afbd82 | 3350 | hci_quote_sent(conn, num, quote); |
1da177e4 LT |
3351 | |
3352 | BT_DBG("conn %p quote %d", conn, *quote); | |
3353 | return conn; | |
3354 | } | |
3355 | ||
6039aa73 | 3356 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3357 | { |
3358 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3359 | struct hci_conn *c; |
1da177e4 | 3360 | |
2064ee33 | 3361 | bt_dev_err(hdev, "link tx timeout"); |
1da177e4 | 3362 | |
bf4c6325 GP |
3363 | rcu_read_lock(); |
3364 | ||
1da177e4 | 3365 | /* Kill stalled connections */ |
bf4c6325 | 3366 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3367 | if (c->type == type && c->sent) { |
2064ee33 MH |
3368 | bt_dev_err(hdev, "killing stalled connection %pMR", |
3369 | &c->dst); | |
bed71748 | 3370 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3371 | } |
3372 | } | |
bf4c6325 GP |
3373 | |
3374 | rcu_read_unlock(); | |
1da177e4 LT |
3375 | } |
3376 | ||
6039aa73 GP |
3377 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3378 | int *quote) | |
1da177e4 | 3379 | { |
73d80deb LAD |
3380 | struct hci_conn_hash *h = &hdev->conn_hash; |
3381 | struct hci_chan *chan = NULL; | |
abc5de8f | 3382 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3383 | struct hci_conn *conn; |
26afbd82 | 3384 | int conn_num = 0; |
73d80deb LAD |
3385 | |
3386 | BT_DBG("%s", hdev->name); | |
3387 | ||
bf4c6325 GP |
3388 | rcu_read_lock(); |
3389 | ||
3390 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3391 | struct hci_chan *tmp; |
3392 | ||
3393 | if (conn->type != type) | |
3394 | continue; | |
3395 | ||
3396 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3397 | continue; | |
3398 | ||
3399 | conn_num++; | |
3400 | ||
8192edef | 3401 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3402 | struct sk_buff *skb; |
3403 | ||
3404 | if (skb_queue_empty(&tmp->data_q)) | |
3405 | continue; | |
3406 | ||
3407 | skb = skb_peek(&tmp->data_q); | |
3408 | if (skb->priority < cur_prio) | |
3409 | continue; | |
3410 | ||
3411 | if (skb->priority > cur_prio) { | |
3412 | num = 0; | |
3413 | min = ~0; | |
3414 | cur_prio = skb->priority; | |
3415 | } | |
3416 | ||
3417 | num++; | |
3418 | ||
3419 | if (conn->sent < min) { | |
3420 | min = conn->sent; | |
3421 | chan = tmp; | |
3422 | } | |
3423 | } | |
3424 | ||
3425 | if (hci_conn_num(hdev, type) == conn_num) | |
3426 | break; | |
3427 | } | |
3428 | ||
bf4c6325 GP |
3429 | rcu_read_unlock(); |
3430 | ||
73d80deb LAD |
3431 | if (!chan) |
3432 | return NULL; | |
3433 | ||
26afbd82 | 3434 | hci_quote_sent(chan->conn, num, quote); |
73d80deb | 3435 | |
73d80deb LAD |
3436 | BT_DBG("chan %p quote %d", chan, *quote); |
3437 | return chan; | |
3438 | } | |
3439 | ||
02b20f0b LAD |
3440 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3441 | { | |
3442 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3443 | struct hci_conn *conn; | |
3444 | int num = 0; | |
3445 | ||
3446 | BT_DBG("%s", hdev->name); | |
3447 | ||
bf4c6325 GP |
3448 | rcu_read_lock(); |
3449 | ||
3450 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3451 | struct hci_chan *chan; |
3452 | ||
3453 | if (conn->type != type) | |
3454 | continue; | |
3455 | ||
3456 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3457 | continue; | |
3458 | ||
3459 | num++; | |
3460 | ||
8192edef | 3461 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3462 | struct sk_buff *skb; |
3463 | ||
3464 | if (chan->sent) { | |
3465 | chan->sent = 0; | |
3466 | continue; | |
3467 | } | |
3468 | ||
3469 | if (skb_queue_empty(&chan->data_q)) | |
3470 | continue; | |
3471 | ||
3472 | skb = skb_peek(&chan->data_q); | |
3473 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3474 | continue; | |
3475 | ||
3476 | skb->priority = HCI_PRIO_MAX - 1; | |
3477 | ||
3478 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3479 | skb->priority); |
02b20f0b LAD |
3480 | } |
3481 | ||
3482 | if (hci_conn_num(hdev, type) == num) | |
3483 | break; | |
3484 | } | |
bf4c6325 GP |
3485 | |
3486 | rcu_read_unlock(); | |
3487 | ||
02b20f0b LAD |
3488 | } |
3489 | ||
b71d385a AE |
3490 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3491 | { | |
3492 | /* Calculate count of blocks used by this packet */ | |
3493 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3494 | } | |
3495 | ||
116523c8 | 3496 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt, u8 type) |
73d80deb | 3497 | { |
116523c8 LAD |
3498 | unsigned long last_tx; |
3499 | ||
3500 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) | |
3501 | return; | |
3502 | ||
3503 | switch (type) { | |
3504 | case LE_LINK: | |
3505 | last_tx = hdev->le_last_tx; | |
3506 | break; | |
3507 | default: | |
3508 | last_tx = hdev->acl_last_tx; | |
3509 | break; | |
1da177e4 | 3510 | } |
116523c8 LAD |
3511 | |
3512 | /* tx timeout must be longer than maximum link supervision timeout | |
3513 | * (40.9 seconds) | |
3514 | */ | |
3515 | if (!cnt && time_after(jiffies, last_tx + HCI_ACL_TX_TIMEOUT)) | |
3516 | hci_link_tx_to(hdev, type); | |
63d2bc1b | 3517 | } |
1da177e4 | 3518 | |
7fedd3bb APS |
3519 | /* Schedule SCO */ |
3520 | static void hci_sched_sco(struct hci_dev *hdev) | |
3521 | { | |
3522 | struct hci_conn *conn; | |
3523 | struct sk_buff *skb; | |
3524 | int quote; | |
3525 | ||
3526 | BT_DBG("%s", hdev->name); | |
3527 | ||
3528 | if (!hci_conn_num(hdev, SCO_LINK)) | |
3529 | return; | |
3530 | ||
3531 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { | |
3532 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3533 | BT_DBG("skb %p len %d", skb, skb->len); | |
3534 | hci_send_frame(hdev, skb); | |
3535 | ||
3536 | conn->sent++; | |
3537 | if (conn->sent == ~0) | |
3538 | conn->sent = 0; | |
3539 | } | |
3540 | } | |
3541 | } | |
3542 | ||
3543 | static void hci_sched_esco(struct hci_dev *hdev) | |
3544 | { | |
3545 | struct hci_conn *conn; | |
3546 | struct sk_buff *skb; | |
3547 | int quote; | |
3548 | ||
3549 | BT_DBG("%s", hdev->name); | |
3550 | ||
3551 | if (!hci_conn_num(hdev, ESCO_LINK)) | |
3552 | return; | |
3553 | ||
3554 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, | |
3555 | "e))) { | |
3556 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3557 | BT_DBG("skb %p len %d", skb, skb->len); | |
3558 | hci_send_frame(hdev, skb); | |
3559 | ||
3560 | conn->sent++; | |
3561 | if (conn->sent == ~0) | |
3562 | conn->sent = 0; | |
3563 | } | |
3564 | } | |
3565 | } | |
3566 | ||
6039aa73 | 3567 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3568 | { |
3569 | unsigned int cnt = hdev->acl_cnt; | |
3570 | struct hci_chan *chan; | |
3571 | struct sk_buff *skb; | |
3572 | int quote; | |
3573 | ||
116523c8 | 3574 | __check_timeout(hdev, cnt, ACL_LINK); |
04837f64 | 3575 | |
73d80deb | 3576 | while (hdev->acl_cnt && |
a8c5fb1a | 3577 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3578 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3579 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3580 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3581 | skb->len, skb->priority); |
73d80deb | 3582 | |
ec1cce24 LAD |
3583 | /* Stop if priority has changed */ |
3584 | if (skb->priority < priority) | |
3585 | break; | |
3586 | ||
3587 | skb = skb_dequeue(&chan->data_q); | |
3588 | ||
73d80deb | 3589 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3590 | bt_cb(skb)->force_active); |
04837f64 | 3591 | |
57d17d70 | 3592 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3593 | hdev->acl_last_tx = jiffies; |
3594 | ||
3595 | hdev->acl_cnt--; | |
73d80deb LAD |
3596 | chan->sent++; |
3597 | chan->conn->sent++; | |
7fedd3bb APS |
3598 | |
3599 | /* Send pending SCO packets right away */ | |
3600 | hci_sched_sco(hdev); | |
3601 | hci_sched_esco(hdev); | |
1da177e4 LT |
3602 | } |
3603 | } | |
02b20f0b LAD |
3604 | |
3605 | if (cnt != hdev->acl_cnt) | |
3606 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3607 | } |
3608 | ||
6039aa73 | 3609 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3610 | { |
63d2bc1b | 3611 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3612 | struct hci_chan *chan; |
3613 | struct sk_buff *skb; | |
3614 | int quote; | |
bd1eb66b | 3615 | u8 type; |
b71d385a | 3616 | |
bd1eb66b AE |
3617 | BT_DBG("%s", hdev->name); |
3618 | ||
3619 | if (hdev->dev_type == HCI_AMP) | |
3620 | type = AMP_LINK; | |
3621 | else | |
3622 | type = ACL_LINK; | |
3623 | ||
116523c8 LAD |
3624 | __check_timeout(hdev, cnt, type); |
3625 | ||
b71d385a | 3626 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3627 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3628 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3629 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3630 | int blocks; | |
3631 | ||
3632 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3633 | skb->len, skb->priority); |
b71d385a AE |
3634 | |
3635 | /* Stop if priority has changed */ | |
3636 | if (skb->priority < priority) | |
3637 | break; | |
3638 | ||
3639 | skb = skb_dequeue(&chan->data_q); | |
3640 | ||
3641 | blocks = __get_blocks(hdev, skb); | |
3642 | if (blocks > hdev->block_cnt) | |
3643 | return; | |
3644 | ||
3645 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3646 | bt_cb(skb)->force_active); |
b71d385a | 3647 | |
57d17d70 | 3648 | hci_send_frame(hdev, skb); |
b71d385a AE |
3649 | hdev->acl_last_tx = jiffies; |
3650 | ||
3651 | hdev->block_cnt -= blocks; | |
3652 | quote -= blocks; | |
3653 | ||
3654 | chan->sent += blocks; | |
3655 | chan->conn->sent += blocks; | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3660 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3661 | } |
3662 | ||
6039aa73 | 3663 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3664 | { |
3665 | BT_DBG("%s", hdev->name); | |
3666 | ||
bd1eb66b | 3667 | /* No ACL link over BR/EDR controller */ |
ca8bee5d | 3668 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY) |
bd1eb66b AE |
3669 | return; |
3670 | ||
3671 | /* No AMP link over AMP controller */ | |
3672 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3673 | return; |
3674 | ||
3675 | switch (hdev->flow_ctl_mode) { | |
3676 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3677 | hci_sched_acl_pkt(hdev); | |
3678 | break; | |
3679 | ||
3680 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3681 | hci_sched_acl_blk(hdev); | |
3682 | break; | |
3683 | } | |
3684 | } | |
3685 | ||
6039aa73 | 3686 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3687 | { |
73d80deb | 3688 | struct hci_chan *chan; |
6ed58ec5 | 3689 | struct sk_buff *skb; |
02b20f0b | 3690 | int quote, cnt, tmp; |
6ed58ec5 VT |
3691 | |
3692 | BT_DBG("%s", hdev->name); | |
3693 | ||
52087a79 LAD |
3694 | if (!hci_conn_num(hdev, LE_LINK)) |
3695 | return; | |
3696 | ||
6ed58ec5 | 3697 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
1b1d29e5 | 3698 | |
116523c8 | 3699 | __check_timeout(hdev, cnt, LE_LINK); |
1b1d29e5 | 3700 | |
02b20f0b | 3701 | tmp = cnt; |
73d80deb | 3702 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3703 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3704 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3705 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3706 | skb->len, skb->priority); |
6ed58ec5 | 3707 | |
ec1cce24 LAD |
3708 | /* Stop if priority has changed */ |
3709 | if (skb->priority < priority) | |
3710 | break; | |
3711 | ||
3712 | skb = skb_dequeue(&chan->data_q); | |
3713 | ||
57d17d70 | 3714 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3715 | hdev->le_last_tx = jiffies; |
3716 | ||
3717 | cnt--; | |
73d80deb LAD |
3718 | chan->sent++; |
3719 | chan->conn->sent++; | |
7fedd3bb APS |
3720 | |
3721 | /* Send pending SCO packets right away */ | |
3722 | hci_sched_sco(hdev); | |
3723 | hci_sched_esco(hdev); | |
6ed58ec5 VT |
3724 | } |
3725 | } | |
73d80deb | 3726 | |
6ed58ec5 VT |
3727 | if (hdev->le_pkts) |
3728 | hdev->le_cnt = cnt; | |
3729 | else | |
3730 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3731 | |
3732 | if (cnt != tmp) | |
3733 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3734 | } |
3735 | ||
26afbd82 LAD |
3736 | /* Schedule CIS */ |
3737 | static void hci_sched_iso(struct hci_dev *hdev) | |
3738 | { | |
3739 | struct hci_conn *conn; | |
3740 | struct sk_buff *skb; | |
3741 | int quote, *cnt; | |
3742 | ||
3743 | BT_DBG("%s", hdev->name); | |
3744 | ||
3745 | if (!hci_conn_num(hdev, ISO_LINK)) | |
3746 | return; | |
3747 | ||
3748 | cnt = hdev->iso_pkts ? &hdev->iso_cnt : | |
3749 | hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt; | |
3750 | while (*cnt && (conn = hci_low_sent(hdev, ISO_LINK, "e))) { | |
3751 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3752 | BT_DBG("skb %p len %d", skb, skb->len); | |
3753 | hci_send_frame(hdev, skb); | |
3754 | ||
3755 | conn->sent++; | |
3756 | if (conn->sent == ~0) | |
3757 | conn->sent = 0; | |
3758 | (*cnt)--; | |
3759 | } | |
3760 | } | |
3761 | } | |
3762 | ||
3eff45ea | 3763 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3764 | { |
3eff45ea | 3765 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3766 | struct sk_buff *skb; |
3767 | ||
26afbd82 LAD |
3768 | BT_DBG("%s acl %d sco %d le %d iso %d", hdev->name, hdev->acl_cnt, |
3769 | hdev->sco_cnt, hdev->le_cnt, hdev->iso_cnt); | |
1da177e4 | 3770 | |
d7a5a11d | 3771 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e | 3772 | /* Schedule queues and send stuff to HCI driver */ |
52de599e MH |
3773 | hci_sched_sco(hdev); |
3774 | hci_sched_esco(hdev); | |
26afbd82 | 3775 | hci_sched_iso(hdev); |
7fedd3bb | 3776 | hci_sched_acl(hdev); |
52de599e MH |
3777 | hci_sched_le(hdev); |
3778 | } | |
6ed58ec5 | 3779 | |
1da177e4 LT |
3780 | /* Send next queued raw (unknown type) packet */ |
3781 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3782 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3783 | } |
3784 | ||
25985edc | 3785 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3786 | |
3787 | /* ACL data packet */ | |
6039aa73 | 3788 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3789 | { |
3790 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3791 | struct hci_conn *conn; | |
3792 | __u16 handle, flags; | |
3793 | ||
3794 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3795 | ||
3796 | handle = __le16_to_cpu(hdr->handle); | |
3797 | flags = hci_flags(handle); | |
3798 | handle = hci_handle(handle); | |
3799 | ||
f0e09510 | 3800 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3801 | handle, flags); |
1da177e4 LT |
3802 | |
3803 | hdev->stat.acl_rx++; | |
3804 | ||
3805 | hci_dev_lock(hdev); | |
3806 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3807 | hci_dev_unlock(hdev); | |
8e87d142 | 3808 | |
1da177e4 | 3809 | if (conn) { |
65983fc7 | 3810 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3811 | |
1da177e4 | 3812 | /* Send to upper protocol */ |
686ebf28 UF |
3813 | l2cap_recv_acldata(conn, skb, flags); |
3814 | return; | |
1da177e4 | 3815 | } else { |
2064ee33 MH |
3816 | bt_dev_err(hdev, "ACL packet for unknown connection handle %d", |
3817 | handle); | |
1da177e4 LT |
3818 | } |
3819 | ||
3820 | kfree_skb(skb); | |
3821 | } | |
3822 | ||
3823 | /* SCO data packet */ | |
6039aa73 | 3824 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3825 | { |
3826 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3827 | struct hci_conn *conn; | |
debdedf2 | 3828 | __u16 handle, flags; |
1da177e4 LT |
3829 | |
3830 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3831 | ||
3832 | handle = __le16_to_cpu(hdr->handle); | |
debdedf2 MH |
3833 | flags = hci_flags(handle); |
3834 | handle = hci_handle(handle); | |
1da177e4 | 3835 | |
debdedf2 MH |
3836 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
3837 | handle, flags); | |
1da177e4 LT |
3838 | |
3839 | hdev->stat.sco_rx++; | |
3840 | ||
3841 | hci_dev_lock(hdev); | |
3842 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3843 | hci_dev_unlock(hdev); | |
3844 | ||
3845 | if (conn) { | |
1da177e4 | 3846 | /* Send to upper protocol */ |
00398e1d | 3847 | bt_cb(skb)->sco.pkt_status = flags & 0x03; |
686ebf28 UF |
3848 | sco_recv_scodata(conn, skb); |
3849 | return; | |
1da177e4 | 3850 | } else { |
2d4b37b6 LAD |
3851 | bt_dev_err_ratelimited(hdev, "SCO packet for unknown connection handle %d", |
3852 | handle); | |
1da177e4 LT |
3853 | } |
3854 | ||
3855 | kfree_skb(skb); | |
3856 | } | |
3857 | ||
26afbd82 LAD |
3858 | static void hci_isodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
3859 | { | |
3860 | struct hci_iso_hdr *hdr; | |
3861 | struct hci_conn *conn; | |
3862 | __u16 handle, flags; | |
3863 | ||
3864 | hdr = skb_pull_data(skb, sizeof(*hdr)); | |
3865 | if (!hdr) { | |
3866 | bt_dev_err(hdev, "ISO packet too small"); | |
3867 | goto drop; | |
3868 | } | |
3869 | ||
3870 | handle = __le16_to_cpu(hdr->handle); | |
3871 | flags = hci_flags(handle); | |
3872 | handle = hci_handle(handle); | |
3873 | ||
3874 | bt_dev_dbg(hdev, "len %d handle 0x%4.4x flags 0x%4.4x", skb->len, | |
3875 | handle, flags); | |
3876 | ||
3877 | hci_dev_lock(hdev); | |
3878 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3879 | hci_dev_unlock(hdev); | |
3880 | ||
26afbd82 LAD |
3881 | if (!conn) { |
3882 | bt_dev_err(hdev, "ISO packet for unknown connection handle %d", | |
3883 | handle); | |
ccf74f23 | 3884 | goto drop; |
26afbd82 LAD |
3885 | } |
3886 | ||
ccf74f23 LAD |
3887 | /* Send to upper protocol */ |
3888 | iso_recv(conn, skb, flags); | |
3889 | return; | |
3890 | ||
26afbd82 LAD |
3891 | drop: |
3892 | kfree_skb(skb); | |
3893 | } | |
3894 | ||
9238f36a JH |
3895 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3896 | { | |
3897 | struct sk_buff *skb; | |
3898 | ||
3899 | skb = skb_peek(&hdev->cmd_q); | |
3900 | if (!skb) | |
3901 | return true; | |
3902 | ||
44d27137 | 3903 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
3904 | } |
3905 | ||
42c6b129 JH |
3906 | static void hci_resend_last(struct hci_dev *hdev) |
3907 | { | |
3908 | struct hci_command_hdr *sent; | |
3909 | struct sk_buff *skb; | |
3910 | u16 opcode; | |
3911 | ||
3912 | if (!hdev->sent_cmd) | |
3913 | return; | |
3914 | ||
3915 | sent = (void *) hdev->sent_cmd->data; | |
3916 | opcode = __le16_to_cpu(sent->opcode); | |
3917 | if (opcode == HCI_OP_RESET) | |
3918 | return; | |
3919 | ||
3920 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3921 | if (!skb) | |
3922 | return; | |
3923 | ||
3924 | skb_queue_head(&hdev->cmd_q, skb); | |
3925 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3926 | } | |
3927 | ||
e6214487 JH |
3928 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
3929 | hci_req_complete_t *req_complete, | |
3930 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 3931 | { |
9238f36a JH |
3932 | struct sk_buff *skb; |
3933 | unsigned long flags; | |
3934 | ||
3935 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3936 | ||
42c6b129 JH |
3937 | /* If the completed command doesn't match the last one that was |
3938 | * sent we need to do special handling of it. | |
9238f36a | 3939 | */ |
42c6b129 JH |
3940 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3941 | /* Some CSR based controllers generate a spontaneous | |
3942 | * reset complete event during init and any pending | |
3943 | * command will never be completed. In such a case we | |
3944 | * need to resend whatever was the last sent | |
3945 | * command. | |
3946 | */ | |
3947 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3948 | hci_resend_last(hdev); | |
3949 | ||
9238f36a | 3950 | return; |
42c6b129 | 3951 | } |
9238f36a | 3952 | |
f80c5dad JPRV |
3953 | /* If we reach this point this event matches the last command sent */ |
3954 | hci_dev_clear_flag(hdev, HCI_CMD_PENDING); | |
3955 | ||
9238f36a JH |
3956 | /* If the command succeeded and there's still more commands in |
3957 | * this request the request is not yet complete. | |
3958 | */ | |
3959 | if (!status && !hci_req_is_complete(hdev)) | |
3960 | return; | |
3961 | ||
3962 | /* If this was the last command in a request the complete | |
3963 | * callback would be found in hdev->sent_cmd instead of the | |
3964 | * command queue (hdev->cmd_q). | |
3965 | */ | |
44d27137 JH |
3966 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
3967 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
3968 | return; |
3969 | } | |
53e21fbc | 3970 | |
44d27137 JH |
3971 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
3972 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 3973 | return; |
9238f36a JH |
3974 | } |
3975 | ||
3976 | /* Remove all pending commands belonging to this request */ | |
3977 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3978 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 3979 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
3980 | __skb_queue_head(&hdev->cmd_q, skb); |
3981 | break; | |
3982 | } | |
3983 | ||
3bd7594e DA |
3984 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
3985 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
3986 | else | |
3987 | *req_complete = bt_cb(skb)->hci.req_complete; | |
39c1eb6f | 3988 | dev_kfree_skb_irq(skb); |
9238f36a JH |
3989 | } |
3990 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
3991 | } |
3992 | ||
b78752cc | 3993 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3994 | { |
b78752cc | 3995 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3996 | struct sk_buff *skb; |
3997 | ||
3998 | BT_DBG("%s", hdev->name); | |
3999 | ||
9f30de9e TK |
4000 | /* The kcov_remote functions used for collecting packet parsing |
4001 | * coverage information from this background thread and associate | |
4002 | * the coverage with the syscall's thread which originally injected | |
4003 | * the packet. This helps fuzzing the kernel. | |
4004 | */ | |
4005 | for (; (skb = skb_dequeue(&hdev->rx_q)); kcov_remote_stop()) { | |
4006 | kcov_remote_start_common(skb_get_kcov_handle(skb)); | |
4007 | ||
cd82e61c MH |
4008 | /* Send copy to monitor */ |
4009 | hci_send_to_monitor(hdev, skb); | |
4010 | ||
1da177e4 LT |
4011 | if (atomic_read(&hdev->promisc)) { |
4012 | /* Send copy to the sockets */ | |
470fe1b5 | 4013 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4014 | } |
4015 | ||
eb8c101e MK |
4016 | /* If the device has been opened in HCI_USER_CHANNEL, |
4017 | * the userspace has exclusive access to device. | |
4018 | * When device is HCI_INIT, we still need to process | |
4019 | * the data packets to the driver in order | |
4020 | * to complete its setup(). | |
4021 | */ | |
4022 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4023 | !test_bit(HCI_INIT, &hdev->flags)) { | |
1da177e4 LT |
4024 | kfree_skb(skb); |
4025 | continue; | |
4026 | } | |
4027 | ||
4028 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4029 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4030 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4031 | case HCI_ACLDATA_PKT: |
4032 | case HCI_SCODATA_PKT: | |
cc974003 | 4033 | case HCI_ISODATA_PKT: |
1da177e4 LT |
4034 | kfree_skb(skb); |
4035 | continue; | |
3ff50b79 | 4036 | } |
1da177e4 LT |
4037 | } |
4038 | ||
4039 | /* Process frame */ | |
d79f34e3 | 4040 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4041 | case HCI_EVENT_PKT: |
b78752cc | 4042 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4043 | hci_event_packet(hdev, skb); |
4044 | break; | |
4045 | ||
4046 | case HCI_ACLDATA_PKT: | |
4047 | BT_DBG("%s ACL data packet", hdev->name); | |
4048 | hci_acldata_packet(hdev, skb); | |
4049 | break; | |
4050 | ||
4051 | case HCI_SCODATA_PKT: | |
4052 | BT_DBG("%s SCO data packet", hdev->name); | |
4053 | hci_scodata_packet(hdev, skb); | |
4054 | break; | |
4055 | ||
26afbd82 LAD |
4056 | case HCI_ISODATA_PKT: |
4057 | BT_DBG("%s ISO data packet", hdev->name); | |
4058 | hci_isodata_packet(hdev, skb); | |
4059 | break; | |
4060 | ||
1da177e4 LT |
4061 | default: |
4062 | kfree_skb(skb); | |
4063 | break; | |
4064 | } | |
4065 | } | |
1da177e4 LT |
4066 | } |
4067 | ||
c347b765 | 4068 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4069 | { |
c347b765 | 4070 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4071 | struct sk_buff *skb; |
4072 | ||
2104786b AE |
4073 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4074 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4075 | |
1da177e4 | 4076 | /* Send queued commands */ |
5a08ecce AE |
4077 | if (atomic_read(&hdev->cmd_cnt)) { |
4078 | skb = skb_dequeue(&hdev->cmd_q); | |
4079 | if (!skb) | |
4080 | return; | |
4081 | ||
7585b97a | 4082 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4083 | |
a675d7f1 | 4084 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4085 | if (hdev->sent_cmd) { |
2250abad | 4086 | int res; |
f80c5dad JPRV |
4087 | if (hci_req_status_pend(hdev)) |
4088 | hci_dev_set_flag(hdev, HCI_CMD_PENDING); | |
1da177e4 | 4089 | atomic_dec(&hdev->cmd_cnt); |
2250abad BB |
4090 | |
4091 | res = hci_send_frame(hdev, skb); | |
4092 | if (res < 0) | |
744451c1 | 4093 | __hci_cmd_sync_cancel(hdev, -res); |
2250abad | 4094 | |
deee93d1 | 4095 | rcu_read_lock(); |
877afada SS |
4096 | if (test_bit(HCI_RESET, &hdev->flags) || |
4097 | hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) | |
65cc2b49 | 4098 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4099 | else |
deee93d1 TH |
4100 | queue_delayed_work(hdev->workqueue, &hdev->cmd_timer, |
4101 | HCI_CMD_TIMEOUT); | |
4102 | rcu_read_unlock(); | |
1da177e4 LT |
4103 | } else { |
4104 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4105 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4106 | } |
4107 | } | |
4108 | } |