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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 JH |
42 | #include "smp.h" |
43 | ||
b78752cc | 44 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 45 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 46 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 47 | |
1da177e4 LT |
48 | /* HCI device list */ |
49 | LIST_HEAD(hci_dev_list); | |
50 | DEFINE_RWLOCK(hci_dev_list_lock); | |
51 | ||
52 | /* HCI callback list */ | |
53 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 54 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 55 | |
3df92b31 SL |
56 | /* HCI ID Numbering */ |
57 | static DEFINE_IDA(hci_index_ida); | |
58 | ||
899de765 MH |
59 | /* ----- HCI requests ----- */ |
60 | ||
61 | #define HCI_REQ_DONE 0 | |
62 | #define HCI_REQ_PEND 1 | |
63 | #define HCI_REQ_CANCELED 2 | |
64 | ||
65 | #define hci_req_lock(d) mutex_lock(&d->req_lock) | |
66 | #define hci_req_unlock(d) mutex_unlock(&d->req_lock) | |
67 | ||
baf27f6e MH |
68 | /* ---- HCI debugfs entries ---- */ |
69 | ||
4b4148e9 MH |
70 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
71 | size_t count, loff_t *ppos) | |
72 | { | |
73 | struct hci_dev *hdev = file->private_data; | |
74 | char buf[3]; | |
75 | ||
b7cb93e5 | 76 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y': 'N'; |
4b4148e9 MH |
77 | buf[1] = '\n'; |
78 | buf[2] = '\0'; | |
79 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
80 | } | |
81 | ||
82 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
83 | size_t count, loff_t *ppos) | |
84 | { | |
85 | struct hci_dev *hdev = file->private_data; | |
86 | struct sk_buff *skb; | |
87 | char buf[32]; | |
88 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
89 | bool enable; | |
4b4148e9 MH |
90 | |
91 | if (!test_bit(HCI_UP, &hdev->flags)) | |
92 | return -ENETDOWN; | |
93 | ||
94 | if (copy_from_user(buf, user_buf, buf_size)) | |
95 | return -EFAULT; | |
96 | ||
97 | buf[buf_size] = '\0'; | |
98 | if (strtobool(buf, &enable)) | |
99 | return -EINVAL; | |
100 | ||
b7cb93e5 | 101 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
102 | return -EALREADY; |
103 | ||
104 | hci_req_lock(hdev); | |
105 | if (enable) | |
106 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
107 | HCI_CMD_TIMEOUT); | |
108 | else | |
109 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
110 | HCI_CMD_TIMEOUT); | |
111 | hci_req_unlock(hdev); | |
112 | ||
113 | if (IS_ERR(skb)) | |
114 | return PTR_ERR(skb); | |
115 | ||
4b4148e9 MH |
116 | kfree_skb(skb); |
117 | ||
b7cb93e5 | 118 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
119 | |
120 | return count; | |
121 | } | |
122 | ||
123 | static const struct file_operations dut_mode_fops = { | |
124 | .open = simple_open, | |
125 | .read = dut_mode_read, | |
126 | .write = dut_mode_write, | |
127 | .llseek = default_llseek, | |
128 | }; | |
129 | ||
4b4113d6 MH |
130 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
131 | size_t count, loff_t *ppos) | |
132 | { | |
133 | struct hci_dev *hdev = file->private_data; | |
134 | char buf[3]; | |
135 | ||
136 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y': 'N'; | |
137 | buf[1] = '\n'; | |
138 | buf[2] = '\0'; | |
139 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
140 | } | |
141 | ||
142 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
143 | size_t count, loff_t *ppos) | |
144 | { | |
145 | struct hci_dev *hdev = file->private_data; | |
146 | char buf[32]; | |
147 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
148 | bool enable; | |
149 | int err; | |
150 | ||
151 | if (copy_from_user(buf, user_buf, buf_size)) | |
152 | return -EFAULT; | |
153 | ||
154 | buf[buf_size] = '\0'; | |
155 | if (strtobool(buf, &enable)) | |
156 | return -EINVAL; | |
157 | ||
7e995b9e MH |
158 | /* When the diagnostic flags are not persistent and the transport |
159 | * is not active, then there is no need for the vendor callback. | |
160 | * | |
161 | * Instead just store the desired value. If needed the setting | |
162 | * will be programmed when the controller gets powered on. | |
163 | */ | |
164 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
165 | !test_bit(HCI_RUNNING, &hdev->flags)) | |
166 | goto done; | |
167 | ||
4b4113d6 MH |
168 | hci_req_lock(hdev); |
169 | err = hdev->set_diag(hdev, enable); | |
170 | hci_req_unlock(hdev); | |
171 | ||
172 | if (err < 0) | |
173 | return err; | |
174 | ||
7e995b9e | 175 | done: |
4b4113d6 MH |
176 | if (enable) |
177 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
178 | else | |
179 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
180 | ||
181 | return count; | |
182 | } | |
183 | ||
184 | static const struct file_operations vendor_diag_fops = { | |
185 | .open = simple_open, | |
186 | .read = vendor_diag_read, | |
187 | .write = vendor_diag_write, | |
188 | .llseek = default_llseek, | |
189 | }; | |
190 | ||
f640ee98 MH |
191 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
192 | { | |
193 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
194 | &dut_mode_fops); | |
195 | ||
196 | if (hdev->set_diag) | |
197 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
198 | &vendor_diag_fops); | |
199 | } | |
200 | ||
1da177e4 LT |
201 | /* ---- HCI requests ---- */ |
202 | ||
f60cb305 JH |
203 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
204 | struct sk_buff *skb) | |
1da177e4 | 205 | { |
42c6b129 | 206 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
207 | |
208 | if (hdev->req_status == HCI_REQ_PEND) { | |
209 | hdev->req_result = result; | |
210 | hdev->req_status = HCI_REQ_DONE; | |
f60cb305 JH |
211 | if (skb) |
212 | hdev->req_skb = skb_get(skb); | |
1da177e4 LT |
213 | wake_up_interruptible(&hdev->req_wait_q); |
214 | } | |
215 | } | |
216 | ||
217 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
218 | { | |
219 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
220 | ||
221 | if (hdev->req_status == HCI_REQ_PEND) { | |
222 | hdev->req_result = err; | |
223 | hdev->req_status = HCI_REQ_CANCELED; | |
224 | wake_up_interruptible(&hdev->req_wait_q); | |
225 | } | |
226 | } | |
227 | ||
7b1abbbe | 228 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 229 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
230 | { |
231 | DECLARE_WAITQUEUE(wait, current); | |
232 | struct hci_request req; | |
f60cb305 | 233 | struct sk_buff *skb; |
75e84b7c JH |
234 | int err = 0; |
235 | ||
236 | BT_DBG("%s", hdev->name); | |
237 | ||
238 | hci_req_init(&req, hdev); | |
239 | ||
7b1abbbe | 240 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
241 | |
242 | hdev->req_status = HCI_REQ_PEND; | |
243 | ||
75e84b7c JH |
244 | add_wait_queue(&hdev->req_wait_q, &wait); |
245 | set_current_state(TASK_INTERRUPTIBLE); | |
246 | ||
f60cb305 | 247 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
039fada5 CP |
248 | if (err < 0) { |
249 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
22a3ceab | 250 | set_current_state(TASK_RUNNING); |
039fada5 CP |
251 | return ERR_PTR(err); |
252 | } | |
253 | ||
75e84b7c JH |
254 | schedule_timeout(timeout); |
255 | ||
256 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
257 | ||
258 | if (signal_pending(current)) | |
259 | return ERR_PTR(-EINTR); | |
260 | ||
261 | switch (hdev->req_status) { | |
262 | case HCI_REQ_DONE: | |
263 | err = -bt_to_errno(hdev->req_result); | |
264 | break; | |
265 | ||
266 | case HCI_REQ_CANCELED: | |
267 | err = -hdev->req_result; | |
268 | break; | |
269 | ||
270 | default: | |
271 | err = -ETIMEDOUT; | |
272 | break; | |
273 | } | |
274 | ||
275 | hdev->req_status = hdev->req_result = 0; | |
f60cb305 JH |
276 | skb = hdev->req_skb; |
277 | hdev->req_skb = NULL; | |
75e84b7c JH |
278 | |
279 | BT_DBG("%s end: err %d", hdev->name, err); | |
280 | ||
f60cb305 JH |
281 | if (err < 0) { |
282 | kfree_skb(skb); | |
75e84b7c | 283 | return ERR_PTR(err); |
f60cb305 | 284 | } |
75e84b7c | 285 | |
757aa0b5 JH |
286 | if (!skb) |
287 | return ERR_PTR(-ENODATA); | |
288 | ||
289 | return skb; | |
7b1abbbe JH |
290 | } |
291 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
292 | ||
293 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 294 | const void *param, u32 timeout) |
7b1abbbe JH |
295 | { |
296 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
297 | } |
298 | EXPORT_SYMBOL(__hci_cmd_sync); | |
299 | ||
1da177e4 | 300 | /* Execute request and wait for completion. */ |
01178cd4 | 301 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
302 | void (*func)(struct hci_request *req, |
303 | unsigned long opt), | |
01178cd4 | 304 | unsigned long opt, __u32 timeout) |
1da177e4 | 305 | { |
42c6b129 | 306 | struct hci_request req; |
1da177e4 LT |
307 | DECLARE_WAITQUEUE(wait, current); |
308 | int err = 0; | |
309 | ||
310 | BT_DBG("%s start", hdev->name); | |
311 | ||
42c6b129 JH |
312 | hci_req_init(&req, hdev); |
313 | ||
1da177e4 LT |
314 | hdev->req_status = HCI_REQ_PEND; |
315 | ||
42c6b129 | 316 | func(&req, opt); |
53cce22d | 317 | |
039fada5 CP |
318 | add_wait_queue(&hdev->req_wait_q, &wait); |
319 | set_current_state(TASK_INTERRUPTIBLE); | |
320 | ||
f60cb305 | 321 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
42c6b129 | 322 | if (err < 0) { |
53cce22d | 323 | hdev->req_status = 0; |
920c8300 | 324 | |
039fada5 | 325 | remove_wait_queue(&hdev->req_wait_q, &wait); |
22a3ceab | 326 | set_current_state(TASK_RUNNING); |
039fada5 | 327 | |
920c8300 AG |
328 | /* ENODATA means the HCI request command queue is empty. |
329 | * This can happen when a request with conditionals doesn't | |
330 | * trigger any commands to be sent. This is normal behavior | |
331 | * and should not trigger an error return. | |
42c6b129 | 332 | */ |
920c8300 AG |
333 | if (err == -ENODATA) |
334 | return 0; | |
335 | ||
336 | return err; | |
53cce22d JH |
337 | } |
338 | ||
1da177e4 LT |
339 | schedule_timeout(timeout); |
340 | ||
341 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
342 | ||
343 | if (signal_pending(current)) | |
344 | return -EINTR; | |
345 | ||
346 | switch (hdev->req_status) { | |
347 | case HCI_REQ_DONE: | |
e175072f | 348 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
349 | break; |
350 | ||
351 | case HCI_REQ_CANCELED: | |
352 | err = -hdev->req_result; | |
353 | break; | |
354 | ||
355 | default: | |
356 | err = -ETIMEDOUT; | |
357 | break; | |
3ff50b79 | 358 | } |
1da177e4 | 359 | |
a5040efa | 360 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
361 | |
362 | BT_DBG("%s end: err %d", hdev->name, err); | |
363 | ||
364 | return err; | |
365 | } | |
366 | ||
01178cd4 | 367 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
368 | void (*req)(struct hci_request *req, |
369 | unsigned long opt), | |
01178cd4 | 370 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
371 | { |
372 | int ret; | |
373 | ||
7c6a329e MH |
374 | if (!test_bit(HCI_UP, &hdev->flags)) |
375 | return -ENETDOWN; | |
376 | ||
1da177e4 LT |
377 | /* Serialize all requests */ |
378 | hci_req_lock(hdev); | |
01178cd4 | 379 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
380 | hci_req_unlock(hdev); |
381 | ||
382 | return ret; | |
383 | } | |
384 | ||
42c6b129 | 385 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 386 | { |
42c6b129 | 387 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
388 | |
389 | /* Reset device */ | |
42c6b129 JH |
390 | set_bit(HCI_RESET, &req->hdev->flags); |
391 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
392 | } |
393 | ||
42c6b129 | 394 | static void bredr_init(struct hci_request *req) |
1da177e4 | 395 | { |
42c6b129 | 396 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 397 | |
1da177e4 | 398 | /* Read Local Supported Features */ |
42c6b129 | 399 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 400 | |
1143e5a6 | 401 | /* Read Local Version */ |
42c6b129 | 402 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
403 | |
404 | /* Read BD Address */ | |
42c6b129 | 405 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
406 | } |
407 | ||
0af801b9 | 408 | static void amp_init1(struct hci_request *req) |
e61ef499 | 409 | { |
42c6b129 | 410 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 411 | |
e61ef499 | 412 | /* Read Local Version */ |
42c6b129 | 413 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 414 | |
f6996cfe MH |
415 | /* Read Local Supported Commands */ |
416 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
417 | ||
6bcbc489 | 418 | /* Read Local AMP Info */ |
42c6b129 | 419 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
420 | |
421 | /* Read Data Blk size */ | |
42c6b129 | 422 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 423 | |
f38ba941 MH |
424 | /* Read Flow Control Mode */ |
425 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
426 | ||
7528ca1c MH |
427 | /* Read Location Data */ |
428 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
429 | } |
430 | ||
0af801b9 JH |
431 | static void amp_init2(struct hci_request *req) |
432 | { | |
433 | /* Read Local Supported Features. Not all AMP controllers | |
434 | * support this so it's placed conditionally in the second | |
435 | * stage init. | |
436 | */ | |
437 | if (req->hdev->commands[14] & 0x20) | |
438 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
439 | } | |
440 | ||
42c6b129 | 441 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 442 | { |
42c6b129 | 443 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
444 | |
445 | BT_DBG("%s %ld", hdev->name, opt); | |
446 | ||
11778716 AE |
447 | /* Reset */ |
448 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 449 | hci_reset_req(req, 0); |
11778716 | 450 | |
e61ef499 AE |
451 | switch (hdev->dev_type) { |
452 | case HCI_BREDR: | |
42c6b129 | 453 | bredr_init(req); |
e61ef499 AE |
454 | break; |
455 | ||
456 | case HCI_AMP: | |
0af801b9 | 457 | amp_init1(req); |
e61ef499 AE |
458 | break; |
459 | ||
460 | default: | |
461 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
462 | break; | |
463 | } | |
e61ef499 AE |
464 | } |
465 | ||
42c6b129 | 466 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 467 | { |
2177bab5 JH |
468 | __le16 param; |
469 | __u8 flt_type; | |
470 | ||
471 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 472 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
473 | |
474 | /* Read Class of Device */ | |
42c6b129 | 475 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
476 | |
477 | /* Read Local Name */ | |
42c6b129 | 478 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
479 | |
480 | /* Read Voice Setting */ | |
42c6b129 | 481 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 482 | |
b4cb9fb2 MH |
483 | /* Read Number of Supported IAC */ |
484 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
485 | ||
4b836f39 MH |
486 | /* Read Current IAC LAP */ |
487 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
488 | ||
2177bab5 JH |
489 | /* Clear Event Filters */ |
490 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 491 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
492 | |
493 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 494 | param = cpu_to_le16(0x7d00); |
42c6b129 | 495 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
496 | } |
497 | ||
42c6b129 | 498 | static void le_setup(struct hci_request *req) |
2177bab5 | 499 | { |
c73eee91 JH |
500 | struct hci_dev *hdev = req->hdev; |
501 | ||
2177bab5 | 502 | /* Read LE Buffer Size */ |
42c6b129 | 503 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
504 | |
505 | /* Read LE Local Supported Features */ | |
42c6b129 | 506 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 507 | |
747d3f03 MH |
508 | /* Read LE Supported States */ |
509 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
510 | ||
2177bab5 | 511 | /* Read LE White List Size */ |
42c6b129 | 512 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 513 | |
747d3f03 MH |
514 | /* Clear LE White List */ |
515 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
516 | |
517 | /* LE-only controllers have LE implicitly enabled */ | |
518 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 519 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
520 | } |
521 | ||
42c6b129 | 522 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 523 | { |
42c6b129 JH |
524 | struct hci_dev *hdev = req->hdev; |
525 | ||
2177bab5 JH |
526 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
527 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
528 | * command otherwise. | |
529 | */ | |
530 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
531 | ||
532 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
533 | * any event mask for pre 1.2 devices. | |
534 | */ | |
535 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
536 | return; | |
537 | ||
538 | if (lmp_bredr_capable(hdev)) { | |
539 | events[4] |= 0x01; /* Flow Specification Complete */ | |
540 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
541 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
542 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
543 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
544 | } else { |
545 | /* Use a different default for LE-only devices */ | |
546 | memset(events, 0, sizeof(events)); | |
547 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
548 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
549 | events[1] |= 0x20; /* Command Complete */ | |
550 | events[1] |= 0x40; /* Command Status */ | |
551 | events[1] |= 0x80; /* Hardware Error */ | |
552 | events[2] |= 0x04; /* Number of Completed Packets */ | |
553 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
554 | |
555 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
556 | events[0] |= 0x80; /* Encryption Change */ | |
557 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
558 | } | |
2177bab5 JH |
559 | } |
560 | ||
561 | if (lmp_inq_rssi_capable(hdev)) | |
562 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
563 | ||
564 | if (lmp_sniffsubr_capable(hdev)) | |
565 | events[5] |= 0x20; /* Sniff Subrating */ | |
566 | ||
567 | if (lmp_pause_enc_capable(hdev)) | |
568 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
569 | ||
570 | if (lmp_ext_inq_capable(hdev)) | |
571 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
572 | ||
573 | if (lmp_no_flush_capable(hdev)) | |
574 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
575 | ||
576 | if (lmp_lsto_capable(hdev)) | |
577 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
578 | ||
579 | if (lmp_ssp_capable(hdev)) { | |
580 | events[6] |= 0x01; /* IO Capability Request */ | |
581 | events[6] |= 0x02; /* IO Capability Response */ | |
582 | events[6] |= 0x04; /* User Confirmation Request */ | |
583 | events[6] |= 0x08; /* User Passkey Request */ | |
584 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
585 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
586 | events[7] |= 0x04; /* User Passkey Notification */ | |
587 | events[7] |= 0x08; /* Keypress Notification */ | |
588 | events[7] |= 0x10; /* Remote Host Supported | |
589 | * Features Notification | |
590 | */ | |
591 | } | |
592 | ||
593 | if (lmp_le_capable(hdev)) | |
594 | events[7] |= 0x20; /* LE Meta-Event */ | |
595 | ||
42c6b129 | 596 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
597 | } |
598 | ||
42c6b129 | 599 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 600 | { |
42c6b129 JH |
601 | struct hci_dev *hdev = req->hdev; |
602 | ||
0af801b9 JH |
603 | if (hdev->dev_type == HCI_AMP) |
604 | return amp_init2(req); | |
605 | ||
2177bab5 | 606 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 607 | bredr_setup(req); |
56f87901 | 608 | else |
a358dc11 | 609 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
610 | |
611 | if (lmp_le_capable(hdev)) | |
42c6b129 | 612 | le_setup(req); |
2177bab5 | 613 | |
0f3adeae MH |
614 | /* All Bluetooth 1.2 and later controllers should support the |
615 | * HCI command for reading the local supported commands. | |
616 | * | |
617 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
618 | * but do not have support for this command. If that is the case, | |
619 | * the driver can quirk the behavior and skip reading the local | |
620 | * supported commands. | |
3f8e2d75 | 621 | */ |
0f3adeae MH |
622 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
623 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 624 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
625 | |
626 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
627 | /* When SSP is available, then the host features page |
628 | * should also be available as well. However some | |
629 | * controllers list the max_page as 0 as long as SSP | |
630 | * has not been enabled. To achieve proper debugging | |
631 | * output, force the minimum max_page to 1 at least. | |
632 | */ | |
633 | hdev->max_page = 0x01; | |
634 | ||
d7a5a11d | 635 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 636 | u8 mode = 0x01; |
574ea3c7 | 637 | |
42c6b129 JH |
638 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
639 | sizeof(mode), &mode); | |
2177bab5 JH |
640 | } else { |
641 | struct hci_cp_write_eir cp; | |
642 | ||
643 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
644 | memset(&cp, 0, sizeof(cp)); | |
645 | ||
42c6b129 | 646 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
647 | } |
648 | } | |
649 | ||
043ec9bf MH |
650 | if (lmp_inq_rssi_capable(hdev) || |
651 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
652 | u8 mode; |
653 | ||
654 | /* If Extended Inquiry Result events are supported, then | |
655 | * they are clearly preferred over Inquiry Result with RSSI | |
656 | * events. | |
657 | */ | |
658 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
659 | ||
660 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
661 | } | |
2177bab5 JH |
662 | |
663 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 664 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
665 | |
666 | if (lmp_ext_feat_capable(hdev)) { | |
667 | struct hci_cp_read_local_ext_features cp; | |
668 | ||
669 | cp.page = 0x01; | |
42c6b129 JH |
670 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
671 | sizeof(cp), &cp); | |
2177bab5 JH |
672 | } |
673 | ||
d7a5a11d | 674 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 675 | u8 enable = 1; |
42c6b129 JH |
676 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
677 | &enable); | |
2177bab5 JH |
678 | } |
679 | } | |
680 | ||
42c6b129 | 681 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 682 | { |
42c6b129 | 683 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
684 | struct hci_cp_write_def_link_policy cp; |
685 | u16 link_policy = 0; | |
686 | ||
687 | if (lmp_rswitch_capable(hdev)) | |
688 | link_policy |= HCI_LP_RSWITCH; | |
689 | if (lmp_hold_capable(hdev)) | |
690 | link_policy |= HCI_LP_HOLD; | |
691 | if (lmp_sniff_capable(hdev)) | |
692 | link_policy |= HCI_LP_SNIFF; | |
693 | if (lmp_park_capable(hdev)) | |
694 | link_policy |= HCI_LP_PARK; | |
695 | ||
696 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 697 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
698 | } |
699 | ||
42c6b129 | 700 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 701 | { |
42c6b129 | 702 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
703 | struct hci_cp_write_le_host_supported cp; |
704 | ||
c73eee91 JH |
705 | /* LE-only devices do not support explicit enablement */ |
706 | if (!lmp_bredr_capable(hdev)) | |
707 | return; | |
708 | ||
2177bab5 JH |
709 | memset(&cp, 0, sizeof(cp)); |
710 | ||
d7a5a11d | 711 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 712 | cp.le = 0x01; |
32226e4f | 713 | cp.simul = 0x00; |
2177bab5 JH |
714 | } |
715 | ||
716 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
717 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
718 | &cp); | |
2177bab5 JH |
719 | } |
720 | ||
d62e6d67 JH |
721 | static void hci_set_event_mask_page_2(struct hci_request *req) |
722 | { | |
723 | struct hci_dev *hdev = req->hdev; | |
724 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
725 | ||
726 | /* If Connectionless Slave Broadcast master role is supported | |
727 | * enable all necessary events for it. | |
728 | */ | |
53b834d2 | 729 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
730 | events[1] |= 0x40; /* Triggered Clock Capture */ |
731 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
732 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
733 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
734 | } | |
735 | ||
736 | /* If Connectionless Slave Broadcast slave role is supported | |
737 | * enable all necessary events for it. | |
738 | */ | |
53b834d2 | 739 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
740 | events[2] |= 0x01; /* Synchronization Train Received */ |
741 | events[2] |= 0x02; /* CSB Receive */ | |
742 | events[2] |= 0x04; /* CSB Timeout */ | |
743 | events[2] |= 0x08; /* Truncated Page Complete */ | |
744 | } | |
745 | ||
40c59fcb | 746 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 747 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
748 | events[2] |= 0x80; |
749 | ||
d62e6d67 JH |
750 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
751 | } | |
752 | ||
42c6b129 | 753 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 754 | { |
42c6b129 | 755 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 756 | u8 p; |
42c6b129 | 757 | |
0da71f1b MH |
758 | hci_setup_event_mask(req); |
759 | ||
e81be90b JH |
760 | if (hdev->commands[6] & 0x20 && |
761 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
762 | struct hci_cp_read_stored_link_key cp; |
763 | ||
764 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
765 | cp.read_all = 0x01; | |
766 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
767 | } | |
768 | ||
2177bab5 | 769 | if (hdev->commands[5] & 0x10) |
42c6b129 | 770 | hci_setup_link_policy(req); |
2177bab5 | 771 | |
417287de MH |
772 | if (hdev->commands[8] & 0x01) |
773 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
774 | ||
775 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
776 | * support the Read Page Scan Type command. Check support for | |
777 | * this command in the bit mask of supported commands. | |
778 | */ | |
779 | if (hdev->commands[13] & 0x01) | |
780 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
781 | ||
9193c6e8 AG |
782 | if (lmp_le_capable(hdev)) { |
783 | u8 events[8]; | |
784 | ||
785 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
786 | events[0] = 0x0f; |
787 | ||
788 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
789 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
790 | |
791 | /* If controller supports the Connection Parameters Request | |
792 | * Link Layer Procedure, enable the corresponding event. | |
793 | */ | |
794 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
795 | events[0] |= 0x20; /* LE Remote Connection | |
796 | * Parameter Request | |
797 | */ | |
798 | ||
a9f6068e MH |
799 | /* If the controller supports the Data Length Extension |
800 | * feature, enable the corresponding event. | |
801 | */ | |
802 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
803 | events[0] |= 0x40; /* LE Data Length Change */ | |
804 | ||
4b71bba4 MH |
805 | /* If the controller supports Extended Scanner Filter |
806 | * Policies, enable the correspondig event. | |
807 | */ | |
808 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
809 | events[1] |= 0x04; /* LE Direct Advertising | |
810 | * Report | |
811 | */ | |
812 | ||
5a34bd5f MH |
813 | /* If the controller supports the LE Read Local P-256 |
814 | * Public Key command, enable the corresponding event. | |
815 | */ | |
816 | if (hdev->commands[34] & 0x02) | |
817 | events[0] |= 0x80; /* LE Read Local P-256 | |
818 | * Public Key Complete | |
819 | */ | |
820 | ||
821 | /* If the controller supports the LE Generate DHKey | |
822 | * command, enable the corresponding event. | |
823 | */ | |
824 | if (hdev->commands[34] & 0x04) | |
825 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
826 | ||
9193c6e8 AG |
827 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
828 | events); | |
829 | ||
15a49cca MH |
830 | if (hdev->commands[25] & 0x40) { |
831 | /* Read LE Advertising Channel TX Power */ | |
832 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
833 | } | |
834 | ||
a9f6068e MH |
835 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
836 | /* Read LE Maximum Data Length */ | |
837 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
838 | ||
839 | /* Read LE Suggested Default Data Length */ | |
840 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
841 | } | |
842 | ||
42c6b129 | 843 | hci_set_le_support(req); |
9193c6e8 | 844 | } |
d2c5d77f JH |
845 | |
846 | /* Read features beyond page 1 if available */ | |
847 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
848 | struct hci_cp_read_local_ext_features cp; | |
849 | ||
850 | cp.page = p; | |
851 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
852 | sizeof(cp), &cp); | |
853 | } | |
2177bab5 JH |
854 | } |
855 | ||
5d4e7e8d JH |
856 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
857 | { | |
858 | struct hci_dev *hdev = req->hdev; | |
859 | ||
36f260ce MH |
860 | /* Some Broadcom based Bluetooth controllers do not support the |
861 | * Delete Stored Link Key command. They are clearly indicating its | |
862 | * absence in the bit mask of supported commands. | |
863 | * | |
864 | * Check the supported commands and only if the the command is marked | |
865 | * as supported send it. If not supported assume that the controller | |
866 | * does not have actual support for stored link keys which makes this | |
867 | * command redundant anyway. | |
868 | * | |
869 | * Some controllers indicate that they support handling deleting | |
870 | * stored link keys, but they don't. The quirk lets a driver | |
871 | * just disable this command. | |
872 | */ | |
873 | if (hdev->commands[6] & 0x80 && | |
874 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
875 | struct hci_cp_delete_stored_link_key cp; | |
876 | ||
877 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
878 | cp.delete_all = 0x01; | |
879 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
880 | sizeof(cp), &cp); | |
881 | } | |
882 | ||
d62e6d67 JH |
883 | /* Set event mask page 2 if the HCI command for it is supported */ |
884 | if (hdev->commands[22] & 0x04) | |
885 | hci_set_event_mask_page_2(req); | |
886 | ||
109e3191 MH |
887 | /* Read local codec list if the HCI command is supported */ |
888 | if (hdev->commands[29] & 0x20) | |
889 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
890 | ||
f4fe73ed MH |
891 | /* Get MWS transport configuration if the HCI command is supported */ |
892 | if (hdev->commands[30] & 0x08) | |
893 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
894 | ||
5d4e7e8d | 895 | /* Check for Synchronization Train support */ |
53b834d2 | 896 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 897 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
898 | |
899 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 900 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 901 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 902 | u8 support = 0x01; |
574ea3c7 | 903 | |
a6d0d690 MH |
904 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
905 | sizeof(support), &support); | |
906 | } | |
5d4e7e8d JH |
907 | } |
908 | ||
2177bab5 JH |
909 | static int __hci_init(struct hci_dev *hdev) |
910 | { | |
911 | int err; | |
912 | ||
913 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
914 | if (err < 0) | |
915 | return err; | |
916 | ||
f640ee98 MH |
917 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
918 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 919 | |
0af801b9 JH |
920 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
921 | if (err < 0) | |
922 | return err; | |
923 | ||
2177bab5 JH |
924 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
925 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 926 | * first two stages of init. |
2177bab5 JH |
927 | */ |
928 | if (hdev->dev_type != HCI_BREDR) | |
929 | return 0; | |
930 | ||
5d4e7e8d JH |
931 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
932 | if (err < 0) | |
933 | return err; | |
934 | ||
baf27f6e MH |
935 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
936 | if (err < 0) | |
937 | return err; | |
938 | ||
ec6cef9c MH |
939 | /* This function is only called when the controller is actually in |
940 | * configured state. When the controller is marked as unconfigured, | |
941 | * this initialization procedure is not run. | |
942 | * | |
943 | * It means that it is possible that a controller runs through its | |
944 | * setup phase and then discovers missing settings. If that is the | |
945 | * case, then this function will not be called. It then will only | |
946 | * be called during the config phase. | |
947 | * | |
948 | * So only when in setup phase or config phase, create the debugfs | |
949 | * entries and register the SMP channels. | |
baf27f6e | 950 | */ |
d7a5a11d MH |
951 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
952 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
953 | return 0; |
954 | ||
60c5f5fb MH |
955 | hci_debugfs_create_common(hdev); |
956 | ||
71c3b60e | 957 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 958 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 959 | |
162a3bac | 960 | if (lmp_le_capable(hdev)) |
60c5f5fb | 961 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 962 | |
baf27f6e | 963 | return 0; |
2177bab5 JH |
964 | } |
965 | ||
0ebca7d6 MH |
966 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
967 | { | |
968 | struct hci_dev *hdev = req->hdev; | |
969 | ||
970 | BT_DBG("%s %ld", hdev->name, opt); | |
971 | ||
972 | /* Reset */ | |
973 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
974 | hci_reset_req(req, 0); | |
975 | ||
976 | /* Read Local Version */ | |
977 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
978 | ||
979 | /* Read BD Address */ | |
980 | if (hdev->set_bdaddr) | |
981 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
982 | } | |
983 | ||
984 | static int __hci_unconf_init(struct hci_dev *hdev) | |
985 | { | |
986 | int err; | |
987 | ||
cc78b44b MH |
988 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
989 | return 0; | |
990 | ||
0ebca7d6 MH |
991 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
992 | if (err < 0) | |
993 | return err; | |
994 | ||
f640ee98 MH |
995 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
996 | hci_debugfs_create_basic(hdev); | |
997 | ||
0ebca7d6 MH |
998 | return 0; |
999 | } | |
1000 | ||
42c6b129 | 1001 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1002 | { |
1003 | __u8 scan = opt; | |
1004 | ||
42c6b129 | 1005 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1006 | |
1007 | /* Inquiry and Page scans */ | |
42c6b129 | 1008 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1009 | } |
1010 | ||
42c6b129 | 1011 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1012 | { |
1013 | __u8 auth = opt; | |
1014 | ||
42c6b129 | 1015 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1016 | |
1017 | /* Authentication */ | |
42c6b129 | 1018 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1019 | } |
1020 | ||
42c6b129 | 1021 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1022 | { |
1023 | __u8 encrypt = opt; | |
1024 | ||
42c6b129 | 1025 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1026 | |
e4e8e37c | 1027 | /* Encryption */ |
42c6b129 | 1028 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1029 | } |
1030 | ||
42c6b129 | 1031 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1032 | { |
1033 | __le16 policy = cpu_to_le16(opt); | |
1034 | ||
42c6b129 | 1035 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1036 | |
1037 | /* Default link policy */ | |
42c6b129 | 1038 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1039 | } |
1040 | ||
8e87d142 | 1041 | /* Get HCI device by index. |
1da177e4 LT |
1042 | * Device is held on return. */ |
1043 | struct hci_dev *hci_dev_get(int index) | |
1044 | { | |
8035ded4 | 1045 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1046 | |
1047 | BT_DBG("%d", index); | |
1048 | ||
1049 | if (index < 0) | |
1050 | return NULL; | |
1051 | ||
1052 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1053 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1054 | if (d->id == index) { |
1055 | hdev = hci_dev_hold(d); | |
1056 | break; | |
1057 | } | |
1058 | } | |
1059 | read_unlock(&hci_dev_list_lock); | |
1060 | return hdev; | |
1061 | } | |
1da177e4 LT |
1062 | |
1063 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1064 | |
30dc78e1 JH |
1065 | bool hci_discovery_active(struct hci_dev *hdev) |
1066 | { | |
1067 | struct discovery_state *discov = &hdev->discovery; | |
1068 | ||
6fbe195d | 1069 | switch (discov->state) { |
343f935b | 1070 | case DISCOVERY_FINDING: |
6fbe195d | 1071 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1072 | return true; |
1073 | ||
6fbe195d AG |
1074 | default: |
1075 | return false; | |
1076 | } | |
30dc78e1 JH |
1077 | } |
1078 | ||
ff9ef578 JH |
1079 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1080 | { | |
bb3e0a33 JH |
1081 | int old_state = hdev->discovery.state; |
1082 | ||
ff9ef578 JH |
1083 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1084 | ||
bb3e0a33 | 1085 | if (old_state == state) |
ff9ef578 JH |
1086 | return; |
1087 | ||
bb3e0a33 JH |
1088 | hdev->discovery.state = state; |
1089 | ||
ff9ef578 JH |
1090 | switch (state) { |
1091 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1092 | hci_update_background_scan(hdev); |
1093 | ||
bb3e0a33 | 1094 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1095 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1096 | break; |
1097 | case DISCOVERY_STARTING: | |
1098 | break; | |
343f935b | 1099 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1100 | mgmt_discovering(hdev, 1); |
1101 | break; | |
30dc78e1 JH |
1102 | case DISCOVERY_RESOLVING: |
1103 | break; | |
ff9ef578 JH |
1104 | case DISCOVERY_STOPPING: |
1105 | break; | |
1106 | } | |
ff9ef578 JH |
1107 | } |
1108 | ||
1f9b9a5d | 1109 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1110 | { |
30883512 | 1111 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1112 | struct inquiry_entry *p, *n; |
1da177e4 | 1113 | |
561aafbc JH |
1114 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1115 | list_del(&p->all); | |
b57c1a56 | 1116 | kfree(p); |
1da177e4 | 1117 | } |
561aafbc JH |
1118 | |
1119 | INIT_LIST_HEAD(&cache->unknown); | |
1120 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1121 | } |
1122 | ||
a8c5fb1a GP |
1123 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1124 | bdaddr_t *bdaddr) | |
1da177e4 | 1125 | { |
30883512 | 1126 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1127 | struct inquiry_entry *e; |
1128 | ||
6ed93dc6 | 1129 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1130 | |
561aafbc JH |
1131 | list_for_each_entry(e, &cache->all, all) { |
1132 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1133 | return e; | |
1134 | } | |
1135 | ||
1136 | return NULL; | |
1137 | } | |
1138 | ||
1139 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1140 | bdaddr_t *bdaddr) |
561aafbc | 1141 | { |
30883512 | 1142 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1143 | struct inquiry_entry *e; |
1144 | ||
6ed93dc6 | 1145 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1146 | |
1147 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1148 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1149 | return e; |
1150 | } | |
1151 | ||
1152 | return NULL; | |
1da177e4 LT |
1153 | } |
1154 | ||
30dc78e1 | 1155 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1156 | bdaddr_t *bdaddr, |
1157 | int state) | |
30dc78e1 JH |
1158 | { |
1159 | struct discovery_state *cache = &hdev->discovery; | |
1160 | struct inquiry_entry *e; | |
1161 | ||
6ed93dc6 | 1162 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1163 | |
1164 | list_for_each_entry(e, &cache->resolve, list) { | |
1165 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1166 | return e; | |
1167 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1168 | return e; | |
1169 | } | |
1170 | ||
1171 | return NULL; | |
1172 | } | |
1173 | ||
a3d4e20a | 1174 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1175 | struct inquiry_entry *ie) |
a3d4e20a JH |
1176 | { |
1177 | struct discovery_state *cache = &hdev->discovery; | |
1178 | struct list_head *pos = &cache->resolve; | |
1179 | struct inquiry_entry *p; | |
1180 | ||
1181 | list_del(&ie->list); | |
1182 | ||
1183 | list_for_each_entry(p, &cache->resolve, list) { | |
1184 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1185 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1186 | break; |
1187 | pos = &p->list; | |
1188 | } | |
1189 | ||
1190 | list_add(&ie->list, pos); | |
1191 | } | |
1192 | ||
af58925c MH |
1193 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1194 | bool name_known) | |
1da177e4 | 1195 | { |
30883512 | 1196 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1197 | struct inquiry_entry *ie; |
af58925c | 1198 | u32 flags = 0; |
1da177e4 | 1199 | |
6ed93dc6 | 1200 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1201 | |
6928a924 | 1202 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1203 | |
af58925c MH |
1204 | if (!data->ssp_mode) |
1205 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1206 | |
70f23020 | 1207 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1208 | if (ie) { |
af58925c MH |
1209 | if (!ie->data.ssp_mode) |
1210 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1211 | |
a3d4e20a | 1212 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1213 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1214 | ie->data.rssi = data->rssi; |
1215 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1216 | } | |
1217 | ||
561aafbc | 1218 | goto update; |
a3d4e20a | 1219 | } |
561aafbc JH |
1220 | |
1221 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1222 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1223 | if (!ie) { |
1224 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1225 | goto done; | |
1226 | } | |
561aafbc JH |
1227 | |
1228 | list_add(&ie->all, &cache->all); | |
1229 | ||
1230 | if (name_known) { | |
1231 | ie->name_state = NAME_KNOWN; | |
1232 | } else { | |
1233 | ie->name_state = NAME_NOT_KNOWN; | |
1234 | list_add(&ie->list, &cache->unknown); | |
1235 | } | |
70f23020 | 1236 | |
561aafbc JH |
1237 | update: |
1238 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1239 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1240 | ie->name_state = NAME_KNOWN; |
1241 | list_del(&ie->list); | |
1da177e4 LT |
1242 | } |
1243 | ||
70f23020 AE |
1244 | memcpy(&ie->data, data, sizeof(*data)); |
1245 | ie->timestamp = jiffies; | |
1da177e4 | 1246 | cache->timestamp = jiffies; |
3175405b JH |
1247 | |
1248 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1249 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1250 | |
af58925c MH |
1251 | done: |
1252 | return flags; | |
1da177e4 LT |
1253 | } |
1254 | ||
1255 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1256 | { | |
30883512 | 1257 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1258 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1259 | struct inquiry_entry *e; | |
1260 | int copied = 0; | |
1261 | ||
561aafbc | 1262 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1263 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1264 | |
1265 | if (copied >= num) | |
1266 | break; | |
1267 | ||
1da177e4 LT |
1268 | bacpy(&info->bdaddr, &data->bdaddr); |
1269 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1270 | info->pscan_period_mode = data->pscan_period_mode; | |
1271 | info->pscan_mode = data->pscan_mode; | |
1272 | memcpy(info->dev_class, data->dev_class, 3); | |
1273 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1274 | |
1da177e4 | 1275 | info++; |
b57c1a56 | 1276 | copied++; |
1da177e4 LT |
1277 | } |
1278 | ||
1279 | BT_DBG("cache %p, copied %d", cache, copied); | |
1280 | return copied; | |
1281 | } | |
1282 | ||
42c6b129 | 1283 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1284 | { |
1285 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1286 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1287 | struct hci_cp_inquiry cp; |
1288 | ||
1289 | BT_DBG("%s", hdev->name); | |
1290 | ||
1291 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1292 | return; | |
1293 | ||
1294 | /* Start Inquiry */ | |
1295 | memcpy(&cp.lap, &ir->lap, 3); | |
1296 | cp.length = ir->length; | |
1297 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1298 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | int hci_inquiry(void __user *arg) | |
1302 | { | |
1303 | __u8 __user *ptr = arg; | |
1304 | struct hci_inquiry_req ir; | |
1305 | struct hci_dev *hdev; | |
1306 | int err = 0, do_inquiry = 0, max_rsp; | |
1307 | long timeo; | |
1308 | __u8 *buf; | |
1309 | ||
1310 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1311 | return -EFAULT; | |
1312 | ||
5a08ecce AE |
1313 | hdev = hci_dev_get(ir.dev_id); |
1314 | if (!hdev) | |
1da177e4 LT |
1315 | return -ENODEV; |
1316 | ||
d7a5a11d | 1317 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1318 | err = -EBUSY; |
1319 | goto done; | |
1320 | } | |
1321 | ||
d7a5a11d | 1322 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1323 | err = -EOPNOTSUPP; |
1324 | goto done; | |
1325 | } | |
1326 | ||
5b69bef5 MH |
1327 | if (hdev->dev_type != HCI_BREDR) { |
1328 | err = -EOPNOTSUPP; | |
1329 | goto done; | |
1330 | } | |
1331 | ||
d7a5a11d | 1332 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1333 | err = -EOPNOTSUPP; |
1334 | goto done; | |
1335 | } | |
1336 | ||
09fd0de5 | 1337 | hci_dev_lock(hdev); |
8e87d142 | 1338 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1339 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1340 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1341 | do_inquiry = 1; |
1342 | } | |
09fd0de5 | 1343 | hci_dev_unlock(hdev); |
1da177e4 | 1344 | |
04837f64 | 1345 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1346 | |
1347 | if (do_inquiry) { | |
01178cd4 JH |
1348 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1349 | timeo); | |
70f23020 AE |
1350 | if (err < 0) |
1351 | goto done; | |
3e13fa1e AG |
1352 | |
1353 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1354 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1355 | */ | |
74316201 | 1356 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1357 | TASK_INTERRUPTIBLE)) |
1358 | return -EINTR; | |
70f23020 | 1359 | } |
1da177e4 | 1360 | |
8fc9ced3 GP |
1361 | /* for unlimited number of responses we will use buffer with |
1362 | * 255 entries | |
1363 | */ | |
1da177e4 LT |
1364 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1365 | ||
1366 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1367 | * copy it to the user space. | |
1368 | */ | |
01df8c31 | 1369 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1370 | if (!buf) { |
1da177e4 LT |
1371 | err = -ENOMEM; |
1372 | goto done; | |
1373 | } | |
1374 | ||
09fd0de5 | 1375 | hci_dev_lock(hdev); |
1da177e4 | 1376 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1377 | hci_dev_unlock(hdev); |
1da177e4 LT |
1378 | |
1379 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1380 | ||
1381 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1382 | ptr += sizeof(ir); | |
1383 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1384 | ir.num_rsp)) |
1da177e4 | 1385 | err = -EFAULT; |
8e87d142 | 1386 | } else |
1da177e4 LT |
1387 | err = -EFAULT; |
1388 | ||
1389 | kfree(buf); | |
1390 | ||
1391 | done: | |
1392 | hci_dev_put(hdev); | |
1393 | return err; | |
1394 | } | |
1395 | ||
cbed0ca1 | 1396 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1397 | { |
1da177e4 LT |
1398 | int ret = 0; |
1399 | ||
1da177e4 LT |
1400 | BT_DBG("%s %p", hdev->name, hdev); |
1401 | ||
1402 | hci_req_lock(hdev); | |
1403 | ||
d7a5a11d | 1404 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1405 | ret = -ENODEV; |
1406 | goto done; | |
1407 | } | |
1408 | ||
d7a5a11d MH |
1409 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1410 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1411 | /* Check for rfkill but allow the HCI setup stage to |
1412 | * proceed (which in itself doesn't cause any RF activity). | |
1413 | */ | |
d7a5a11d | 1414 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1415 | ret = -ERFKILL; |
1416 | goto done; | |
1417 | } | |
1418 | ||
1419 | /* Check for valid public address or a configured static | |
1420 | * random adddress, but let the HCI setup proceed to | |
1421 | * be able to determine if there is a public address | |
1422 | * or not. | |
1423 | * | |
c6beca0e MH |
1424 | * In case of user channel usage, it is not important |
1425 | * if a public address or static random address is | |
1426 | * available. | |
1427 | * | |
a5c8f270 MH |
1428 | * This check is only valid for BR/EDR controllers |
1429 | * since AMP controllers do not have an address. | |
1430 | */ | |
d7a5a11d | 1431 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1432 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1433 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1434 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1435 | ret = -EADDRNOTAVAIL; | |
1436 | goto done; | |
1437 | } | |
611b30f7 MH |
1438 | } |
1439 | ||
1da177e4 LT |
1440 | if (test_bit(HCI_UP, &hdev->flags)) { |
1441 | ret = -EALREADY; | |
1442 | goto done; | |
1443 | } | |
1444 | ||
1da177e4 LT |
1445 | if (hdev->open(hdev)) { |
1446 | ret = -EIO; | |
1447 | goto done; | |
1448 | } | |
1449 | ||
e9ca8bf1 | 1450 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1451 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1452 | |
f41c70c4 MH |
1453 | atomic_set(&hdev->cmd_cnt, 1); |
1454 | set_bit(HCI_INIT, &hdev->flags); | |
1455 | ||
d7a5a11d | 1456 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
e131d74a MH |
1457 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1458 | ||
af202f84 MH |
1459 | if (hdev->setup) |
1460 | ret = hdev->setup(hdev); | |
f41c70c4 | 1461 | |
af202f84 MH |
1462 | /* The transport driver can set these quirks before |
1463 | * creating the HCI device or in its setup callback. | |
1464 | * | |
1465 | * In case any of them is set, the controller has to | |
1466 | * start up as unconfigured. | |
1467 | */ | |
eb1904f4 MH |
1468 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1469 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1470 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1471 | |
0ebca7d6 MH |
1472 | /* For an unconfigured controller it is required to |
1473 | * read at least the version information provided by | |
1474 | * the Read Local Version Information command. | |
1475 | * | |
1476 | * If the set_bdaddr driver callback is provided, then | |
1477 | * also the original Bluetooth public device address | |
1478 | * will be read using the Read BD Address command. | |
1479 | */ | |
d7a5a11d | 1480 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1481 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1482 | } |
1483 | ||
d7a5a11d | 1484 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1485 | /* If public address change is configured, ensure that |
1486 | * the address gets programmed. If the driver does not | |
1487 | * support changing the public address, fail the power | |
1488 | * on procedure. | |
1489 | */ | |
1490 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1491 | hdev->set_bdaddr) | |
24c457e2 MH |
1492 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1493 | else | |
1494 | ret = -EADDRNOTAVAIL; | |
1495 | } | |
1496 | ||
f41c70c4 | 1497 | if (!ret) { |
d7a5a11d | 1498 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1499 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1500 | ret = __hci_init(hdev); |
98a63aaf MH |
1501 | if (!ret && hdev->post_init) |
1502 | ret = hdev->post_init(hdev); | |
1503 | } | |
1da177e4 LT |
1504 | } |
1505 | ||
7e995b9e MH |
1506 | /* If the HCI Reset command is clearing all diagnostic settings, |
1507 | * then they need to be reprogrammed after the init procedure | |
1508 | * completed. | |
1509 | */ | |
1510 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
1511 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) | |
1512 | ret = hdev->set_diag(hdev, true); | |
1513 | ||
f41c70c4 MH |
1514 | clear_bit(HCI_INIT, &hdev->flags); |
1515 | ||
1da177e4 LT |
1516 | if (!ret) { |
1517 | hci_dev_hold(hdev); | |
a1536da2 | 1518 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 | 1519 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1520 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
d7a5a11d MH |
1521 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1522 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1523 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1524 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1514b892 | 1525 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1526 | hci_dev_lock(hdev); |
744cf19e | 1527 | mgmt_powered(hdev, 1); |
09fd0de5 | 1528 | hci_dev_unlock(hdev); |
56e5cb86 | 1529 | } |
8e87d142 | 1530 | } else { |
1da177e4 | 1531 | /* Init failed, cleanup */ |
3eff45ea | 1532 | flush_work(&hdev->tx_work); |
c347b765 | 1533 | flush_work(&hdev->cmd_work); |
b78752cc | 1534 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1535 | |
1536 | skb_queue_purge(&hdev->cmd_q); | |
1537 | skb_queue_purge(&hdev->rx_q); | |
1538 | ||
1539 | if (hdev->flush) | |
1540 | hdev->flush(hdev); | |
1541 | ||
1542 | if (hdev->sent_cmd) { | |
1543 | kfree_skb(hdev->sent_cmd); | |
1544 | hdev->sent_cmd = NULL; | |
1545 | } | |
1546 | ||
e9ca8bf1 | 1547 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1548 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1549 | |
1da177e4 | 1550 | hdev->close(hdev); |
fee746b0 | 1551 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | done: | |
1555 | hci_req_unlock(hdev); | |
1da177e4 LT |
1556 | return ret; |
1557 | } | |
1558 | ||
cbed0ca1 JH |
1559 | /* ---- HCI ioctl helpers ---- */ |
1560 | ||
1561 | int hci_dev_open(__u16 dev) | |
1562 | { | |
1563 | struct hci_dev *hdev; | |
1564 | int err; | |
1565 | ||
1566 | hdev = hci_dev_get(dev); | |
1567 | if (!hdev) | |
1568 | return -ENODEV; | |
1569 | ||
4a964404 | 1570 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1571 | * up as user channel. Trying to bring them up as normal devices |
1572 | * will result into a failure. Only user channel operation is | |
1573 | * possible. | |
1574 | * | |
1575 | * When this function is called for a user channel, the flag | |
1576 | * HCI_USER_CHANNEL will be set first before attempting to | |
1577 | * open the device. | |
1578 | */ | |
d7a5a11d MH |
1579 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1580 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1581 | err = -EOPNOTSUPP; |
1582 | goto done; | |
1583 | } | |
1584 | ||
e1d08f40 JH |
1585 | /* We need to ensure that no other power on/off work is pending |
1586 | * before proceeding to call hci_dev_do_open. This is | |
1587 | * particularly important if the setup procedure has not yet | |
1588 | * completed. | |
1589 | */ | |
a69d8927 | 1590 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1591 | cancel_delayed_work(&hdev->power_off); |
1592 | ||
a5c8f270 MH |
1593 | /* After this call it is guaranteed that the setup procedure |
1594 | * has finished. This means that error conditions like RFKILL | |
1595 | * or no valid public or static random address apply. | |
1596 | */ | |
e1d08f40 JH |
1597 | flush_workqueue(hdev->req_workqueue); |
1598 | ||
12aa4f0a | 1599 | /* For controllers not using the management interface and that |
b6ae8457 | 1600 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1601 | * so that pairing works for them. Once the management interface |
1602 | * is in use this bit will be cleared again and userspace has | |
1603 | * to explicitly enable it. | |
1604 | */ | |
d7a5a11d MH |
1605 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1606 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1607 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1608 | |
cbed0ca1 JH |
1609 | err = hci_dev_do_open(hdev); |
1610 | ||
fee746b0 | 1611 | done: |
cbed0ca1 | 1612 | hci_dev_put(hdev); |
cbed0ca1 JH |
1613 | return err; |
1614 | } | |
1615 | ||
d7347f3c JH |
1616 | /* This function requires the caller holds hdev->lock */ |
1617 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1618 | { | |
1619 | struct hci_conn_params *p; | |
1620 | ||
f161dd41 JH |
1621 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1622 | if (p->conn) { | |
1623 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1624 | hci_conn_put(p->conn); |
f161dd41 JH |
1625 | p->conn = NULL; |
1626 | } | |
d7347f3c | 1627 | list_del_init(&p->action); |
f161dd41 | 1628 | } |
d7347f3c JH |
1629 | |
1630 | BT_DBG("All LE pending actions cleared"); | |
1631 | } | |
1632 | ||
6b3cc1db | 1633 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1634 | { |
acc649c6 MH |
1635 | bool auto_off; |
1636 | ||
1da177e4 LT |
1637 | BT_DBG("%s %p", hdev->name, hdev); |
1638 | ||
d24d8144 | 1639 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1640 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1641 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1642 | /* Execute vendor specific shutdown routine */ |
1643 | if (hdev->shutdown) | |
1644 | hdev->shutdown(hdev); | |
1645 | } | |
1646 | ||
78c04c0b VCG |
1647 | cancel_delayed_work(&hdev->power_off); |
1648 | ||
1da177e4 LT |
1649 | hci_req_cancel(hdev, ENODEV); |
1650 | hci_req_lock(hdev); | |
1651 | ||
1652 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1653 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1654 | hci_req_unlock(hdev); |
1655 | return 0; | |
1656 | } | |
1657 | ||
3eff45ea GP |
1658 | /* Flush RX and TX works */ |
1659 | flush_work(&hdev->tx_work); | |
b78752cc | 1660 | flush_work(&hdev->rx_work); |
1da177e4 | 1661 | |
16ab91ab | 1662 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1663 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1664 | hdev->discov_timeout = 0; |
a358dc11 MH |
1665 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1666 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1667 | } |
1668 | ||
a69d8927 | 1669 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1670 | cancel_delayed_work(&hdev->service_cache); |
1671 | ||
7ba8b4be | 1672 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2d28cfe7 | 1673 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
4518bb0f | 1674 | |
d7a5a11d | 1675 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1676 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1677 | |
5d900e46 FG |
1678 | if (hdev->adv_instance_timeout) { |
1679 | cancel_delayed_work_sync(&hdev->adv_instance_expire); | |
1680 | hdev->adv_instance_timeout = 0; | |
1681 | } | |
1682 | ||
76727c02 JH |
1683 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1684 | * ensuring the workqueue is empty up front. | |
1685 | */ | |
1686 | drain_workqueue(hdev->workqueue); | |
1687 | ||
09fd0de5 | 1688 | hci_dev_lock(hdev); |
1aeb9c65 | 1689 | |
8f502f84 JH |
1690 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1691 | ||
acc649c6 MH |
1692 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1693 | ||
1694 | if (!auto_off && hdev->dev_type == HCI_BREDR) | |
1695 | mgmt_powered(hdev, 0); | |
1aeb9c65 | 1696 | |
1f9b9a5d | 1697 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1698 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1699 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1700 | hci_dev_unlock(hdev); |
1da177e4 | 1701 | |
64dae967 MH |
1702 | smp_unregister(hdev); |
1703 | ||
05fcd4c4 | 1704 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1705 | |
1706 | if (hdev->flush) | |
1707 | hdev->flush(hdev); | |
1708 | ||
1709 | /* Reset device */ | |
1710 | skb_queue_purge(&hdev->cmd_q); | |
1711 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1712 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1713 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1714 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1715 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1716 | clear_bit(HCI_INIT, &hdev->flags); |
1717 | } | |
1718 | ||
c347b765 GP |
1719 | /* flush cmd work */ |
1720 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1721 | |
1722 | /* Drop queues */ | |
1723 | skb_queue_purge(&hdev->rx_q); | |
1724 | skb_queue_purge(&hdev->cmd_q); | |
1725 | skb_queue_purge(&hdev->raw_q); | |
1726 | ||
1727 | /* Drop last sent command */ | |
1728 | if (hdev->sent_cmd) { | |
65cc2b49 | 1729 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1730 | kfree_skb(hdev->sent_cmd); |
1731 | hdev->sent_cmd = NULL; | |
1732 | } | |
1733 | ||
e9ca8bf1 | 1734 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1735 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1736 | |
1da177e4 LT |
1737 | /* After this point our queues are empty |
1738 | * and no tasks are scheduled. */ | |
1739 | hdev->close(hdev); | |
1740 | ||
35b973c9 | 1741 | /* Clear flags */ |
fee746b0 | 1742 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1743 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1744 | |
ced5c338 | 1745 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1746 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1747 | |
e59fda8d | 1748 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1749 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1750 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1751 | |
1da177e4 LT |
1752 | hci_req_unlock(hdev); |
1753 | ||
1754 | hci_dev_put(hdev); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
1758 | int hci_dev_close(__u16 dev) | |
1759 | { | |
1760 | struct hci_dev *hdev; | |
1761 | int err; | |
1762 | ||
70f23020 AE |
1763 | hdev = hci_dev_get(dev); |
1764 | if (!hdev) | |
1da177e4 | 1765 | return -ENODEV; |
8ee56540 | 1766 | |
d7a5a11d | 1767 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1768 | err = -EBUSY; |
1769 | goto done; | |
1770 | } | |
1771 | ||
a69d8927 | 1772 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1773 | cancel_delayed_work(&hdev->power_off); |
1774 | ||
1da177e4 | 1775 | err = hci_dev_do_close(hdev); |
8ee56540 | 1776 | |
0736cfa8 | 1777 | done: |
1da177e4 LT |
1778 | hci_dev_put(hdev); |
1779 | return err; | |
1780 | } | |
1781 | ||
5c912495 | 1782 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1783 | { |
5c912495 | 1784 | int ret; |
1da177e4 | 1785 | |
5c912495 | 1786 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1787 | |
1788 | hci_req_lock(hdev); | |
1da177e4 | 1789 | |
1da177e4 LT |
1790 | /* Drop queues */ |
1791 | skb_queue_purge(&hdev->rx_q); | |
1792 | skb_queue_purge(&hdev->cmd_q); | |
1793 | ||
76727c02 JH |
1794 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1795 | * ensuring the workqueue is empty up front. | |
1796 | */ | |
1797 | drain_workqueue(hdev->workqueue); | |
1798 | ||
09fd0de5 | 1799 | hci_dev_lock(hdev); |
1f9b9a5d | 1800 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1801 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1802 | hci_dev_unlock(hdev); |
1da177e4 LT |
1803 | |
1804 | if (hdev->flush) | |
1805 | hdev->flush(hdev); | |
1806 | ||
8e87d142 | 1807 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1808 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1809 | |
fee746b0 | 1810 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1811 | |
1da177e4 | 1812 | hci_req_unlock(hdev); |
1da177e4 LT |
1813 | return ret; |
1814 | } | |
1815 | ||
5c912495 MH |
1816 | int hci_dev_reset(__u16 dev) |
1817 | { | |
1818 | struct hci_dev *hdev; | |
1819 | int err; | |
1820 | ||
1821 | hdev = hci_dev_get(dev); | |
1822 | if (!hdev) | |
1823 | return -ENODEV; | |
1824 | ||
1825 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1826 | err = -ENETDOWN; | |
1827 | goto done; | |
1828 | } | |
1829 | ||
d7a5a11d | 1830 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1831 | err = -EBUSY; |
1832 | goto done; | |
1833 | } | |
1834 | ||
d7a5a11d | 1835 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1836 | err = -EOPNOTSUPP; |
1837 | goto done; | |
1838 | } | |
1839 | ||
1840 | err = hci_dev_do_reset(hdev); | |
1841 | ||
1842 | done: | |
1843 | hci_dev_put(hdev); | |
1844 | return err; | |
1845 | } | |
1846 | ||
1da177e4 LT |
1847 | int hci_dev_reset_stat(__u16 dev) |
1848 | { | |
1849 | struct hci_dev *hdev; | |
1850 | int ret = 0; | |
1851 | ||
70f23020 AE |
1852 | hdev = hci_dev_get(dev); |
1853 | if (!hdev) | |
1da177e4 LT |
1854 | return -ENODEV; |
1855 | ||
d7a5a11d | 1856 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1857 | ret = -EBUSY; |
1858 | goto done; | |
1859 | } | |
1860 | ||
d7a5a11d | 1861 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1862 | ret = -EOPNOTSUPP; |
1863 | goto done; | |
1864 | } | |
1865 | ||
1da177e4 LT |
1866 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1867 | ||
0736cfa8 | 1868 | done: |
1da177e4 | 1869 | hci_dev_put(hdev); |
1da177e4 LT |
1870 | return ret; |
1871 | } | |
1872 | ||
123abc08 JH |
1873 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1874 | { | |
bc6d2d04 | 1875 | bool conn_changed, discov_changed; |
123abc08 JH |
1876 | |
1877 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1878 | ||
1879 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1880 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1881 | HCI_CONNECTABLE); | |
123abc08 | 1882 | else |
a69d8927 MH |
1883 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1884 | HCI_CONNECTABLE); | |
123abc08 | 1885 | |
bc6d2d04 | 1886 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1887 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1888 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1889 | } else { |
a358dc11 | 1890 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1891 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1892 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1893 | } |
1894 | ||
d7a5a11d | 1895 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1896 | return; |
1897 | ||
bc6d2d04 JH |
1898 | if (conn_changed || discov_changed) { |
1899 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1900 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1901 | |
d7a5a11d | 1902 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
bc6d2d04 JH |
1903 | mgmt_update_adv_data(hdev); |
1904 | ||
123abc08 | 1905 | mgmt_new_settings(hdev); |
bc6d2d04 | 1906 | } |
123abc08 JH |
1907 | } |
1908 | ||
1da177e4 LT |
1909 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1910 | { | |
1911 | struct hci_dev *hdev; | |
1912 | struct hci_dev_req dr; | |
1913 | int err = 0; | |
1914 | ||
1915 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1916 | return -EFAULT; | |
1917 | ||
70f23020 AE |
1918 | hdev = hci_dev_get(dr.dev_id); |
1919 | if (!hdev) | |
1da177e4 LT |
1920 | return -ENODEV; |
1921 | ||
d7a5a11d | 1922 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1923 | err = -EBUSY; |
1924 | goto done; | |
1925 | } | |
1926 | ||
d7a5a11d | 1927 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1928 | err = -EOPNOTSUPP; |
1929 | goto done; | |
1930 | } | |
1931 | ||
5b69bef5 MH |
1932 | if (hdev->dev_type != HCI_BREDR) { |
1933 | err = -EOPNOTSUPP; | |
1934 | goto done; | |
1935 | } | |
1936 | ||
d7a5a11d | 1937 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1938 | err = -EOPNOTSUPP; |
1939 | goto done; | |
1940 | } | |
1941 | ||
1da177e4 LT |
1942 | switch (cmd) { |
1943 | case HCISETAUTH: | |
01178cd4 JH |
1944 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1945 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1946 | break; |
1947 | ||
1948 | case HCISETENCRYPT: | |
1949 | if (!lmp_encrypt_capable(hdev)) { | |
1950 | err = -EOPNOTSUPP; | |
1951 | break; | |
1952 | } | |
1953 | ||
1954 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1955 | /* Auth must be enabled first */ | |
01178cd4 JH |
1956 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1957 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1958 | if (err) |
1959 | break; | |
1960 | } | |
1961 | ||
01178cd4 JH |
1962 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1963 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1964 | break; |
1965 | ||
1966 | case HCISETSCAN: | |
01178cd4 JH |
1967 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1968 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1969 | |
bc6d2d04 JH |
1970 | /* Ensure that the connectable and discoverable states |
1971 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1972 | */ |
123abc08 JH |
1973 | if (!err) |
1974 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1975 | break; |
1976 | ||
1da177e4 | 1977 | case HCISETLINKPOL: |
01178cd4 JH |
1978 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1979 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1980 | break; |
1981 | ||
1982 | case HCISETLINKMODE: | |
e4e8e37c MH |
1983 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1984 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1985 | break; | |
1986 | ||
1987 | case HCISETPTYPE: | |
1988 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1989 | break; |
1990 | ||
1991 | case HCISETACLMTU: | |
e4e8e37c MH |
1992 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1993 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1994 | break; |
1995 | ||
1996 | case HCISETSCOMTU: | |
e4e8e37c MH |
1997 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1998 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1999 | break; |
2000 | ||
2001 | default: | |
2002 | err = -EINVAL; | |
2003 | break; | |
2004 | } | |
e4e8e37c | 2005 | |
0736cfa8 | 2006 | done: |
1da177e4 LT |
2007 | hci_dev_put(hdev); |
2008 | return err; | |
2009 | } | |
2010 | ||
2011 | int hci_get_dev_list(void __user *arg) | |
2012 | { | |
8035ded4 | 2013 | struct hci_dev *hdev; |
1da177e4 LT |
2014 | struct hci_dev_list_req *dl; |
2015 | struct hci_dev_req *dr; | |
1da177e4 LT |
2016 | int n = 0, size, err; |
2017 | __u16 dev_num; | |
2018 | ||
2019 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2020 | return -EFAULT; | |
2021 | ||
2022 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2023 | return -EINVAL; | |
2024 | ||
2025 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2026 | ||
70f23020 AE |
2027 | dl = kzalloc(size, GFP_KERNEL); |
2028 | if (!dl) | |
1da177e4 LT |
2029 | return -ENOMEM; |
2030 | ||
2031 | dr = dl->dev_req; | |
2032 | ||
f20d09d5 | 2033 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2034 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 2035 | unsigned long flags = hdev->flags; |
c542a06c | 2036 | |
2e84d8db MH |
2037 | /* When the auto-off is configured it means the transport |
2038 | * is running, but in that case still indicate that the | |
2039 | * device is actually down. | |
2040 | */ | |
d7a5a11d | 2041 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 2042 | flags &= ~BIT(HCI_UP); |
c542a06c | 2043 | |
1da177e4 | 2044 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2045 | (dr + n)->dev_opt = flags; |
c542a06c | 2046 | |
1da177e4 LT |
2047 | if (++n >= dev_num) |
2048 | break; | |
2049 | } | |
f20d09d5 | 2050 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2051 | |
2052 | dl->dev_num = n; | |
2053 | size = sizeof(*dl) + n * sizeof(*dr); | |
2054 | ||
2055 | err = copy_to_user(arg, dl, size); | |
2056 | kfree(dl); | |
2057 | ||
2058 | return err ? -EFAULT : 0; | |
2059 | } | |
2060 | ||
2061 | int hci_get_dev_info(void __user *arg) | |
2062 | { | |
2063 | struct hci_dev *hdev; | |
2064 | struct hci_dev_info di; | |
2e84d8db | 2065 | unsigned long flags; |
1da177e4 LT |
2066 | int err = 0; |
2067 | ||
2068 | if (copy_from_user(&di, arg, sizeof(di))) | |
2069 | return -EFAULT; | |
2070 | ||
70f23020 AE |
2071 | hdev = hci_dev_get(di.dev_id); |
2072 | if (!hdev) | |
1da177e4 LT |
2073 | return -ENODEV; |
2074 | ||
2e84d8db MH |
2075 | /* When the auto-off is configured it means the transport |
2076 | * is running, but in that case still indicate that the | |
2077 | * device is actually down. | |
2078 | */ | |
d7a5a11d | 2079 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
2080 | flags = hdev->flags & ~BIT(HCI_UP); |
2081 | else | |
2082 | flags = hdev->flags; | |
c542a06c | 2083 | |
1da177e4 LT |
2084 | strcpy(di.name, hdev->name); |
2085 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2086 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2087 | di.flags = flags; |
1da177e4 | 2088 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2089 | if (lmp_bredr_capable(hdev)) { |
2090 | di.acl_mtu = hdev->acl_mtu; | |
2091 | di.acl_pkts = hdev->acl_pkts; | |
2092 | di.sco_mtu = hdev->sco_mtu; | |
2093 | di.sco_pkts = hdev->sco_pkts; | |
2094 | } else { | |
2095 | di.acl_mtu = hdev->le_mtu; | |
2096 | di.acl_pkts = hdev->le_pkts; | |
2097 | di.sco_mtu = 0; | |
2098 | di.sco_pkts = 0; | |
2099 | } | |
1da177e4 LT |
2100 | di.link_policy = hdev->link_policy; |
2101 | di.link_mode = hdev->link_mode; | |
2102 | ||
2103 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2104 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2105 | ||
2106 | if (copy_to_user(arg, &di, sizeof(di))) | |
2107 | err = -EFAULT; | |
2108 | ||
2109 | hci_dev_put(hdev); | |
2110 | ||
2111 | return err; | |
2112 | } | |
2113 | ||
2114 | /* ---- Interface to HCI drivers ---- */ | |
2115 | ||
611b30f7 MH |
2116 | static int hci_rfkill_set_block(void *data, bool blocked) |
2117 | { | |
2118 | struct hci_dev *hdev = data; | |
2119 | ||
2120 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2121 | ||
d7a5a11d | 2122 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2123 | return -EBUSY; |
2124 | ||
5e130367 | 2125 | if (blocked) { |
a1536da2 | 2126 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2127 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2128 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2129 | hci_dev_do_close(hdev); |
5e130367 | 2130 | } else { |
a358dc11 | 2131 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2132 | } |
611b30f7 MH |
2133 | |
2134 | return 0; | |
2135 | } | |
2136 | ||
2137 | static const struct rfkill_ops hci_rfkill_ops = { | |
2138 | .set_block = hci_rfkill_set_block, | |
2139 | }; | |
2140 | ||
ab81cbf9 JH |
2141 | static void hci_power_on(struct work_struct *work) |
2142 | { | |
2143 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2144 | int err; |
ab81cbf9 JH |
2145 | |
2146 | BT_DBG("%s", hdev->name); | |
2147 | ||
cbed0ca1 | 2148 | err = hci_dev_do_open(hdev); |
96570ffc | 2149 | if (err < 0) { |
3ad67582 | 2150 | hci_dev_lock(hdev); |
96570ffc | 2151 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2152 | hci_dev_unlock(hdev); |
ab81cbf9 | 2153 | return; |
96570ffc | 2154 | } |
ab81cbf9 | 2155 | |
a5c8f270 MH |
2156 | /* During the HCI setup phase, a few error conditions are |
2157 | * ignored and they need to be checked now. If they are still | |
2158 | * valid, it is important to turn the device back off. | |
2159 | */ | |
d7a5a11d MH |
2160 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2161 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2162 | (hdev->dev_type == HCI_BREDR && |
2163 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2164 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2165 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2166 | hci_dev_do_close(hdev); |
d7a5a11d | 2167 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2168 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2169 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2170 | } |
ab81cbf9 | 2171 | |
a69d8927 | 2172 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2173 | /* For unconfigured devices, set the HCI_RAW flag |
2174 | * so that userspace can easily identify them. | |
4a964404 | 2175 | */ |
d7a5a11d | 2176 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2177 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2178 | |
2179 | /* For fully configured devices, this will send | |
2180 | * the Index Added event. For unconfigured devices, | |
2181 | * it will send Unconfigued Index Added event. | |
2182 | * | |
2183 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2184 | * and no event will be send. | |
2185 | */ | |
2186 | mgmt_index_added(hdev); | |
a69d8927 | 2187 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2188 | /* When the controller is now configured, then it |
2189 | * is important to clear the HCI_RAW flag. | |
2190 | */ | |
d7a5a11d | 2191 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2192 | clear_bit(HCI_RAW, &hdev->flags); |
2193 | ||
d603b76b MH |
2194 | /* Powering on the controller with HCI_CONFIG set only |
2195 | * happens with the transition from unconfigured to | |
2196 | * configured. This will send the Index Added event. | |
2197 | */ | |
744cf19e | 2198 | mgmt_index_added(hdev); |
fee746b0 | 2199 | } |
ab81cbf9 JH |
2200 | } |
2201 | ||
2202 | static void hci_power_off(struct work_struct *work) | |
2203 | { | |
3243553f | 2204 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2205 | power_off.work); |
ab81cbf9 JH |
2206 | |
2207 | BT_DBG("%s", hdev->name); | |
2208 | ||
8ee56540 | 2209 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2210 | } |
2211 | ||
c7741d16 MH |
2212 | static void hci_error_reset(struct work_struct *work) |
2213 | { | |
2214 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2215 | ||
2216 | BT_DBG("%s", hdev->name); | |
2217 | ||
2218 | if (hdev->hw_error) | |
2219 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2220 | else | |
2221 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2222 | hdev->hw_error_code); | |
2223 | ||
2224 | if (hci_dev_do_close(hdev)) | |
2225 | return; | |
2226 | ||
c7741d16 MH |
2227 | hci_dev_do_open(hdev); |
2228 | } | |
2229 | ||
16ab91ab JH |
2230 | static void hci_discov_off(struct work_struct *work) |
2231 | { | |
2232 | struct hci_dev *hdev; | |
16ab91ab JH |
2233 | |
2234 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2235 | ||
2236 | BT_DBG("%s", hdev->name); | |
2237 | ||
d1967ff8 | 2238 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2239 | } |
2240 | ||
5d900e46 FG |
2241 | static void hci_adv_timeout_expire(struct work_struct *work) |
2242 | { | |
2243 | struct hci_dev *hdev; | |
2244 | ||
2245 | hdev = container_of(work, struct hci_dev, adv_instance_expire.work); | |
2246 | ||
2247 | BT_DBG("%s", hdev->name); | |
2248 | ||
2249 | mgmt_adv_timeout_expired(hdev); | |
2250 | } | |
2251 | ||
35f7498a | 2252 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2253 | { |
4821002c | 2254 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2255 | |
4821002c JH |
2256 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2257 | list_del(&uuid->list); | |
2aeb9a1a JH |
2258 | kfree(uuid); |
2259 | } | |
2aeb9a1a JH |
2260 | } |
2261 | ||
35f7498a | 2262 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2263 | { |
0378b597 | 2264 | struct link_key *key; |
55ed8ca1 | 2265 | |
0378b597 JH |
2266 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2267 | list_del_rcu(&key->list); | |
2268 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2269 | } |
55ed8ca1 JH |
2270 | } |
2271 | ||
35f7498a | 2272 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2273 | { |
970d0f1b | 2274 | struct smp_ltk *k; |
b899efaf | 2275 | |
970d0f1b JH |
2276 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2277 | list_del_rcu(&k->list); | |
2278 | kfree_rcu(k, rcu); | |
b899efaf | 2279 | } |
b899efaf VCG |
2280 | } |
2281 | ||
970c4e46 JH |
2282 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2283 | { | |
adae20cb | 2284 | struct smp_irk *k; |
970c4e46 | 2285 | |
adae20cb JH |
2286 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2287 | list_del_rcu(&k->list); | |
2288 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2289 | } |
2290 | } | |
2291 | ||
55ed8ca1 JH |
2292 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2293 | { | |
8035ded4 | 2294 | struct link_key *k; |
55ed8ca1 | 2295 | |
0378b597 JH |
2296 | rcu_read_lock(); |
2297 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2298 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2299 | rcu_read_unlock(); | |
55ed8ca1 | 2300 | return k; |
0378b597 JH |
2301 | } |
2302 | } | |
2303 | rcu_read_unlock(); | |
55ed8ca1 JH |
2304 | |
2305 | return NULL; | |
2306 | } | |
2307 | ||
745c0ce3 | 2308 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2309 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2310 | { |
2311 | /* Legacy key */ | |
2312 | if (key_type < 0x03) | |
745c0ce3 | 2313 | return true; |
d25e28ab JH |
2314 | |
2315 | /* Debug keys are insecure so don't store them persistently */ | |
2316 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2317 | return false; |
d25e28ab JH |
2318 | |
2319 | /* Changed combination key and there's no previous one */ | |
2320 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2321 | return false; |
d25e28ab JH |
2322 | |
2323 | /* Security mode 3 case */ | |
2324 | if (!conn) | |
745c0ce3 | 2325 | return true; |
d25e28ab | 2326 | |
e3befab9 JH |
2327 | /* BR/EDR key derived using SC from an LE link */ |
2328 | if (conn->type == LE_LINK) | |
2329 | return true; | |
2330 | ||
d25e28ab JH |
2331 | /* Neither local nor remote side had no-bonding as requirement */ |
2332 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2333 | return true; |
d25e28ab JH |
2334 | |
2335 | /* Local side had dedicated bonding as requirement */ | |
2336 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2337 | return true; |
d25e28ab JH |
2338 | |
2339 | /* Remote side had dedicated bonding as requirement */ | |
2340 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2341 | return true; |
d25e28ab JH |
2342 | |
2343 | /* If none of the above criteria match, then don't store the key | |
2344 | * persistently */ | |
745c0ce3 | 2345 | return false; |
d25e28ab JH |
2346 | } |
2347 | ||
e804d25d | 2348 | static u8 ltk_role(u8 type) |
98a0b845 | 2349 | { |
e804d25d JH |
2350 | if (type == SMP_LTK) |
2351 | return HCI_ROLE_MASTER; | |
98a0b845 | 2352 | |
e804d25d | 2353 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2354 | } |
2355 | ||
f3a73d97 JH |
2356 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2357 | u8 addr_type, u8 role) | |
75d262c2 | 2358 | { |
c9839a11 | 2359 | struct smp_ltk *k; |
75d262c2 | 2360 | |
970d0f1b JH |
2361 | rcu_read_lock(); |
2362 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2363 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2364 | continue; | |
2365 | ||
923e2414 | 2366 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2367 | rcu_read_unlock(); |
75d262c2 | 2368 | return k; |
970d0f1b JH |
2369 | } |
2370 | } | |
2371 | rcu_read_unlock(); | |
75d262c2 VCG |
2372 | |
2373 | return NULL; | |
2374 | } | |
75d262c2 | 2375 | |
970c4e46 JH |
2376 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2377 | { | |
2378 | struct smp_irk *irk; | |
2379 | ||
adae20cb JH |
2380 | rcu_read_lock(); |
2381 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2382 | if (!bacmp(&irk->rpa, rpa)) { | |
2383 | rcu_read_unlock(); | |
970c4e46 | 2384 | return irk; |
adae20cb | 2385 | } |
970c4e46 JH |
2386 | } |
2387 | ||
adae20cb | 2388 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2389 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2390 | bacpy(&irk->rpa, rpa); |
adae20cb | 2391 | rcu_read_unlock(); |
970c4e46 JH |
2392 | return irk; |
2393 | } | |
2394 | } | |
adae20cb | 2395 | rcu_read_unlock(); |
970c4e46 JH |
2396 | |
2397 | return NULL; | |
2398 | } | |
2399 | ||
2400 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2401 | u8 addr_type) | |
2402 | { | |
2403 | struct smp_irk *irk; | |
2404 | ||
6cfc9988 JH |
2405 | /* Identity Address must be public or static random */ |
2406 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2407 | return NULL; | |
2408 | ||
adae20cb JH |
2409 | rcu_read_lock(); |
2410 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2411 | if (addr_type == irk->addr_type && |
adae20cb JH |
2412 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2413 | rcu_read_unlock(); | |
970c4e46 | 2414 | return irk; |
adae20cb | 2415 | } |
970c4e46 | 2416 | } |
adae20cb | 2417 | rcu_read_unlock(); |
970c4e46 JH |
2418 | |
2419 | return NULL; | |
2420 | } | |
2421 | ||
567fa2aa | 2422 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2423 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2424 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2425 | { |
2426 | struct link_key *key, *old_key; | |
745c0ce3 | 2427 | u8 old_key_type; |
55ed8ca1 JH |
2428 | |
2429 | old_key = hci_find_link_key(hdev, bdaddr); | |
2430 | if (old_key) { | |
2431 | old_key_type = old_key->type; | |
2432 | key = old_key; | |
2433 | } else { | |
12adcf3a | 2434 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2435 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2436 | if (!key) |
567fa2aa | 2437 | return NULL; |
0378b597 | 2438 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2439 | } |
2440 | ||
6ed93dc6 | 2441 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2442 | |
d25e28ab JH |
2443 | /* Some buggy controller combinations generate a changed |
2444 | * combination key for legacy pairing even when there's no | |
2445 | * previous key */ | |
2446 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2447 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2448 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2449 | if (conn) |
2450 | conn->key_type = type; | |
2451 | } | |
d25e28ab | 2452 | |
55ed8ca1 | 2453 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2454 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2455 | key->pin_len = pin_len; |
2456 | ||
b6020ba0 | 2457 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2458 | key->type = old_key_type; |
4748fed2 JH |
2459 | else |
2460 | key->type = type; | |
2461 | ||
7652ff6a JH |
2462 | if (persistent) |
2463 | *persistent = hci_persistent_key(hdev, conn, type, | |
2464 | old_key_type); | |
4df378a1 | 2465 | |
567fa2aa | 2466 | return key; |
55ed8ca1 JH |
2467 | } |
2468 | ||
ca9142b8 | 2469 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2470 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2471 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2472 | { |
c9839a11 | 2473 | struct smp_ltk *key, *old_key; |
e804d25d | 2474 | u8 role = ltk_role(type); |
75d262c2 | 2475 | |
f3a73d97 | 2476 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2477 | if (old_key) |
75d262c2 | 2478 | key = old_key; |
c9839a11 | 2479 | else { |
0a14ab41 | 2480 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2481 | if (!key) |
ca9142b8 | 2482 | return NULL; |
970d0f1b | 2483 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2484 | } |
2485 | ||
75d262c2 | 2486 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2487 | key->bdaddr_type = addr_type; |
2488 | memcpy(key->val, tk, sizeof(key->val)); | |
2489 | key->authenticated = authenticated; | |
2490 | key->ediv = ediv; | |
fe39c7b2 | 2491 | key->rand = rand; |
c9839a11 VCG |
2492 | key->enc_size = enc_size; |
2493 | key->type = type; | |
75d262c2 | 2494 | |
ca9142b8 | 2495 | return key; |
75d262c2 VCG |
2496 | } |
2497 | ||
ca9142b8 JH |
2498 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2499 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2500 | { |
2501 | struct smp_irk *irk; | |
2502 | ||
2503 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2504 | if (!irk) { | |
2505 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2506 | if (!irk) | |
ca9142b8 | 2507 | return NULL; |
970c4e46 JH |
2508 | |
2509 | bacpy(&irk->bdaddr, bdaddr); | |
2510 | irk->addr_type = addr_type; | |
2511 | ||
adae20cb | 2512 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2513 | } |
2514 | ||
2515 | memcpy(irk->val, val, 16); | |
2516 | bacpy(&irk->rpa, rpa); | |
2517 | ||
ca9142b8 | 2518 | return irk; |
970c4e46 JH |
2519 | } |
2520 | ||
55ed8ca1 JH |
2521 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2522 | { | |
2523 | struct link_key *key; | |
2524 | ||
2525 | key = hci_find_link_key(hdev, bdaddr); | |
2526 | if (!key) | |
2527 | return -ENOENT; | |
2528 | ||
6ed93dc6 | 2529 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2530 | |
0378b597 JH |
2531 | list_del_rcu(&key->list); |
2532 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2533 | |
2534 | return 0; | |
2535 | } | |
2536 | ||
e0b2b27e | 2537 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2538 | { |
970d0f1b | 2539 | struct smp_ltk *k; |
c51ffa0b | 2540 | int removed = 0; |
b899efaf | 2541 | |
970d0f1b | 2542 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2543 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2544 | continue; |
2545 | ||
6ed93dc6 | 2546 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2547 | |
970d0f1b JH |
2548 | list_del_rcu(&k->list); |
2549 | kfree_rcu(k, rcu); | |
c51ffa0b | 2550 | removed++; |
b899efaf VCG |
2551 | } |
2552 | ||
c51ffa0b | 2553 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2554 | } |
2555 | ||
a7ec7338 JH |
2556 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2557 | { | |
adae20cb | 2558 | struct smp_irk *k; |
a7ec7338 | 2559 | |
adae20cb | 2560 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2561 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2562 | continue; | |
2563 | ||
2564 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2565 | ||
adae20cb JH |
2566 | list_del_rcu(&k->list); |
2567 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2568 | } |
2569 | } | |
2570 | ||
55e76b38 JH |
2571 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2572 | { | |
2573 | struct smp_ltk *k; | |
4ba9faf3 | 2574 | struct smp_irk *irk; |
55e76b38 JH |
2575 | u8 addr_type; |
2576 | ||
2577 | if (type == BDADDR_BREDR) { | |
2578 | if (hci_find_link_key(hdev, bdaddr)) | |
2579 | return true; | |
2580 | return false; | |
2581 | } | |
2582 | ||
2583 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2584 | if (type == BDADDR_LE_PUBLIC) | |
2585 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2586 | else | |
2587 | addr_type = ADDR_LE_DEV_RANDOM; | |
2588 | ||
4ba9faf3 JH |
2589 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2590 | if (irk) { | |
2591 | bdaddr = &irk->bdaddr; | |
2592 | addr_type = irk->addr_type; | |
2593 | } | |
2594 | ||
55e76b38 JH |
2595 | rcu_read_lock(); |
2596 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2597 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2598 | rcu_read_unlock(); | |
55e76b38 | 2599 | return true; |
87c8b28d | 2600 | } |
55e76b38 JH |
2601 | } |
2602 | rcu_read_unlock(); | |
2603 | ||
2604 | return false; | |
2605 | } | |
2606 | ||
6bd32326 | 2607 | /* HCI command timer function */ |
65cc2b49 | 2608 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2609 | { |
65cc2b49 MH |
2610 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2611 | cmd_timer.work); | |
6bd32326 | 2612 | |
bda4f23a AE |
2613 | if (hdev->sent_cmd) { |
2614 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2615 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2616 | ||
2617 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2618 | } else { | |
2619 | BT_ERR("%s command tx timeout", hdev->name); | |
2620 | } | |
2621 | ||
6bd32326 | 2622 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2623 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2624 | } |
2625 | ||
2763eda6 | 2626 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2627 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2628 | { |
2629 | struct oob_data *data; | |
2630 | ||
6928a924 JH |
2631 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2632 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2633 | continue; | |
2634 | if (data->bdaddr_type != bdaddr_type) | |
2635 | continue; | |
2636 | return data; | |
2637 | } | |
2763eda6 SJ |
2638 | |
2639 | return NULL; | |
2640 | } | |
2641 | ||
6928a924 JH |
2642 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2643 | u8 bdaddr_type) | |
2763eda6 SJ |
2644 | { |
2645 | struct oob_data *data; | |
2646 | ||
6928a924 | 2647 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2648 | if (!data) |
2649 | return -ENOENT; | |
2650 | ||
6928a924 | 2651 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2652 | |
2653 | list_del(&data->list); | |
2654 | kfree(data); | |
2655 | ||
2656 | return 0; | |
2657 | } | |
2658 | ||
35f7498a | 2659 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2660 | { |
2661 | struct oob_data *data, *n; | |
2662 | ||
2663 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2664 | list_del(&data->list); | |
2665 | kfree(data); | |
2666 | } | |
2763eda6 SJ |
2667 | } |
2668 | ||
0798872e | 2669 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2670 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2671 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2672 | { |
2673 | struct oob_data *data; | |
2674 | ||
6928a924 | 2675 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2676 | if (!data) { |
0a14ab41 | 2677 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2678 | if (!data) |
2679 | return -ENOMEM; | |
2680 | ||
2681 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2682 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2683 | list_add(&data->list, &hdev->remote_oob_data); |
2684 | } | |
2685 | ||
81328d5c JH |
2686 | if (hash192 && rand192) { |
2687 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2688 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2689 | if (hash256 && rand256) |
2690 | data->present = 0x03; | |
81328d5c JH |
2691 | } else { |
2692 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2693 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2694 | if (hash256 && rand256) |
2695 | data->present = 0x02; | |
2696 | else | |
2697 | data->present = 0x00; | |
0798872e MH |
2698 | } |
2699 | ||
81328d5c JH |
2700 | if (hash256 && rand256) { |
2701 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2702 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2703 | } else { | |
2704 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2705 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2706 | if (hash192 && rand192) |
2707 | data->present = 0x01; | |
81328d5c | 2708 | } |
0798872e | 2709 | |
6ed93dc6 | 2710 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2711 | |
2712 | return 0; | |
2713 | } | |
2714 | ||
d2609b34 FG |
2715 | /* This function requires the caller holds hdev->lock */ |
2716 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2717 | { | |
2718 | struct adv_info *adv_instance; | |
2719 | ||
2720 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2721 | if (adv_instance->instance == instance) | |
2722 | return adv_instance; | |
2723 | } | |
2724 | ||
2725 | return NULL; | |
2726 | } | |
2727 | ||
2728 | /* This function requires the caller holds hdev->lock */ | |
2729 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) { | |
2730 | struct adv_info *cur_instance; | |
2731 | ||
2732 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2733 | if (!cur_instance) | |
2734 | return NULL; | |
2735 | ||
2736 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2737 | struct adv_info, list)) | |
2738 | return list_first_entry(&hdev->adv_instances, | |
2739 | struct adv_info, list); | |
2740 | else | |
2741 | return list_next_entry(cur_instance, list); | |
2742 | } | |
2743 | ||
2744 | /* This function requires the caller holds hdev->lock */ | |
2745 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2746 | { | |
2747 | struct adv_info *adv_instance; | |
2748 | ||
2749 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2750 | if (!adv_instance) | |
2751 | return -ENOENT; | |
2752 | ||
2753 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2754 | ||
5d900e46 FG |
2755 | if (hdev->cur_adv_instance == instance && hdev->adv_instance_timeout) { |
2756 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2757 | hdev->adv_instance_timeout = 0; | |
2758 | } | |
2759 | ||
d2609b34 FG |
2760 | list_del(&adv_instance->list); |
2761 | kfree(adv_instance); | |
2762 | ||
2763 | hdev->adv_instance_cnt--; | |
2764 | ||
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | /* This function requires the caller holds hdev->lock */ | |
2769 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2770 | { | |
2771 | struct adv_info *adv_instance, *n; | |
2772 | ||
5d900e46 FG |
2773 | if (hdev->adv_instance_timeout) { |
2774 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2775 | hdev->adv_instance_timeout = 0; | |
2776 | } | |
2777 | ||
d2609b34 FG |
2778 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2779 | list_del(&adv_instance->list); | |
2780 | kfree(adv_instance); | |
2781 | } | |
2782 | ||
2783 | hdev->adv_instance_cnt = 0; | |
2784 | } | |
2785 | ||
2786 | /* This function requires the caller holds hdev->lock */ | |
2787 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2788 | u16 adv_data_len, u8 *adv_data, | |
2789 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2790 | u16 timeout, u16 duration) | |
2791 | { | |
2792 | struct adv_info *adv_instance; | |
2793 | ||
2794 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2795 | if (adv_instance) { | |
2796 | memset(adv_instance->adv_data, 0, | |
2797 | sizeof(adv_instance->adv_data)); | |
2798 | memset(adv_instance->scan_rsp_data, 0, | |
2799 | sizeof(adv_instance->scan_rsp_data)); | |
2800 | } else { | |
2801 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2802 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2803 | return -EOVERFLOW; | |
2804 | ||
39ecfad6 | 2805 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2806 | if (!adv_instance) |
2807 | return -ENOMEM; | |
2808 | ||
fffd38bc | 2809 | adv_instance->pending = true; |
d2609b34 FG |
2810 | adv_instance->instance = instance; |
2811 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2812 | hdev->adv_instance_cnt++; | |
2813 | } | |
2814 | ||
2815 | adv_instance->flags = flags; | |
2816 | adv_instance->adv_data_len = adv_data_len; | |
2817 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2818 | ||
2819 | if (adv_data_len) | |
2820 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2821 | ||
2822 | if (scan_rsp_len) | |
2823 | memcpy(adv_instance->scan_rsp_data, | |
2824 | scan_rsp_data, scan_rsp_len); | |
2825 | ||
2826 | adv_instance->timeout = timeout; | |
5d900e46 | 2827 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2828 | |
2829 | if (duration == 0) | |
2830 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2831 | else | |
2832 | adv_instance->duration = duration; | |
2833 | ||
2834 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2835 | ||
2836 | return 0; | |
2837 | } | |
2838 | ||
dcc36c16 | 2839 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2840 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2841 | { |
8035ded4 | 2842 | struct bdaddr_list *b; |
b2a66aad | 2843 | |
dcc36c16 | 2844 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2845 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2846 | return b; |
b9ee0a78 | 2847 | } |
b2a66aad AJ |
2848 | |
2849 | return NULL; | |
2850 | } | |
2851 | ||
dcc36c16 | 2852 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2853 | { |
2854 | struct list_head *p, *n; | |
2855 | ||
dcc36c16 | 2856 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2857 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2858 | |
2859 | list_del(p); | |
2860 | kfree(b); | |
2861 | } | |
b2a66aad AJ |
2862 | } |
2863 | ||
dcc36c16 | 2864 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2865 | { |
2866 | struct bdaddr_list *entry; | |
b2a66aad | 2867 | |
b9ee0a78 | 2868 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2869 | return -EBADF; |
2870 | ||
dcc36c16 | 2871 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2872 | return -EEXIST; |
b2a66aad | 2873 | |
27f70f3e | 2874 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2875 | if (!entry) |
2876 | return -ENOMEM; | |
b2a66aad AJ |
2877 | |
2878 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2879 | entry->bdaddr_type = type; |
b2a66aad | 2880 | |
dcc36c16 | 2881 | list_add(&entry->list, list); |
b2a66aad | 2882 | |
2a8357f2 | 2883 | return 0; |
b2a66aad AJ |
2884 | } |
2885 | ||
dcc36c16 | 2886 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2887 | { |
2888 | struct bdaddr_list *entry; | |
b2a66aad | 2889 | |
35f7498a | 2890 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2891 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2892 | return 0; |
2893 | } | |
b2a66aad | 2894 | |
dcc36c16 | 2895 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2896 | if (!entry) |
2897 | return -ENOENT; | |
2898 | ||
2899 | list_del(&entry->list); | |
2900 | kfree(entry); | |
2901 | ||
2902 | return 0; | |
2903 | } | |
2904 | ||
15819a70 AG |
2905 | /* This function requires the caller holds hdev->lock */ |
2906 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2907 | bdaddr_t *addr, u8 addr_type) | |
2908 | { | |
2909 | struct hci_conn_params *params; | |
2910 | ||
2911 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2912 | if (bacmp(¶ms->addr, addr) == 0 && | |
2913 | params->addr_type == addr_type) { | |
2914 | return params; | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | return NULL; | |
2919 | } | |
2920 | ||
4b10966f | 2921 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2922 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2923 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2924 | { |
912b42ef | 2925 | struct hci_conn_params *param; |
a9b0a04c | 2926 | |
501f8827 | 2927 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2928 | if (bacmp(¶m->addr, addr) == 0 && |
2929 | param->addr_type == addr_type) | |
2930 | return param; | |
4b10966f MH |
2931 | } |
2932 | ||
2933 | return NULL; | |
a9b0a04c AG |
2934 | } |
2935 | ||
15819a70 | 2936 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2937 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2938 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2939 | { |
2940 | struct hci_conn_params *params; | |
2941 | ||
2942 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2943 | if (params) |
51d167c0 | 2944 | return params; |
15819a70 AG |
2945 | |
2946 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2947 | if (!params) { | |
2948 | BT_ERR("Out of memory"); | |
51d167c0 | 2949 | return NULL; |
15819a70 AG |
2950 | } |
2951 | ||
2952 | bacpy(¶ms->addr, addr); | |
2953 | params->addr_type = addr_type; | |
cef952ce AG |
2954 | |
2955 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2956 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2957 | |
bf5b3c8b MH |
2958 | params->conn_min_interval = hdev->le_conn_min_interval; |
2959 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2960 | params->conn_latency = hdev->le_conn_latency; | |
2961 | params->supervision_timeout = hdev->le_supv_timeout; | |
2962 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2963 | ||
2964 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2965 | ||
51d167c0 | 2966 | return params; |
bf5b3c8b MH |
2967 | } |
2968 | ||
f6c63249 | 2969 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2970 | { |
f8aaf9b6 | 2971 | if (params->conn) { |
f161dd41 | 2972 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2973 | hci_conn_put(params->conn); |
2974 | } | |
f161dd41 | 2975 | |
95305baa | 2976 | list_del(¶ms->action); |
15819a70 AG |
2977 | list_del(¶ms->list); |
2978 | kfree(params); | |
f6c63249 JH |
2979 | } |
2980 | ||
2981 | /* This function requires the caller holds hdev->lock */ | |
2982 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2983 | { | |
2984 | struct hci_conn_params *params; | |
2985 | ||
2986 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2987 | if (!params) | |
2988 | return; | |
2989 | ||
2990 | hci_conn_params_free(params); | |
15819a70 | 2991 | |
95305baa JH |
2992 | hci_update_background_scan(hdev); |
2993 | ||
15819a70 AG |
2994 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2995 | } | |
2996 | ||
2997 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2998 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2999 | { |
3000 | struct hci_conn_params *params, *tmp; | |
3001 | ||
3002 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
3003 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
3004 | continue; | |
f75113a2 JP |
3005 | |
3006 | /* If trying to estabilish one time connection to disabled | |
3007 | * device, leave the params, but mark them as just once. | |
3008 | */ | |
3009 | if (params->explicit_connect) { | |
3010 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
3011 | continue; | |
3012 | } | |
3013 | ||
15819a70 AG |
3014 | list_del(¶ms->list); |
3015 | kfree(params); | |
3016 | } | |
3017 | ||
55af49a8 | 3018 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
3019 | } |
3020 | ||
3021 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 3022 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 3023 | { |
15819a70 | 3024 | struct hci_conn_params *params, *tmp; |
77a77a30 | 3025 | |
f6c63249 JH |
3026 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
3027 | hci_conn_params_free(params); | |
77a77a30 | 3028 | |
a4790dbd | 3029 | hci_update_background_scan(hdev); |
77a77a30 | 3030 | |
15819a70 | 3031 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
3032 | } |
3033 | ||
1904a853 | 3034 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 3035 | { |
4c87eaab AG |
3036 | if (status) { |
3037 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3038 | |
4c87eaab AG |
3039 | hci_dev_lock(hdev); |
3040 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3041 | hci_dev_unlock(hdev); | |
3042 | return; | |
3043 | } | |
7ba8b4be AG |
3044 | } |
3045 | ||
1904a853 MH |
3046 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
3047 | u16 opcode) | |
7ba8b4be | 3048 | { |
4c87eaab AG |
3049 | /* General inquiry access code (GIAC) */ |
3050 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
4c87eaab | 3051 | struct hci_cp_inquiry cp; |
7ba8b4be AG |
3052 | int err; |
3053 | ||
4c87eaab AG |
3054 | if (status) { |
3055 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3056 | return; | |
3057 | } | |
7ba8b4be | 3058 | |
2d28cfe7 JP |
3059 | hdev->discovery.scan_start = 0; |
3060 | ||
4c87eaab AG |
3061 | switch (hdev->discovery.type) { |
3062 | case DISCOV_TYPE_LE: | |
3063 | hci_dev_lock(hdev); | |
3064 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3065 | hci_dev_unlock(hdev); | |
3066 | break; | |
7ba8b4be | 3067 | |
4c87eaab | 3068 | case DISCOV_TYPE_INTERLEAVED: |
4c87eaab | 3069 | hci_dev_lock(hdev); |
7dbfac1d | 3070 | |
07d2334a JP |
3071 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, |
3072 | &hdev->quirks)) { | |
3073 | /* If we were running LE only scan, change discovery | |
3074 | * state. If we were running both LE and BR/EDR inquiry | |
3075 | * simultaneously, and BR/EDR inquiry is already | |
3076 | * finished, stop discovery, otherwise BR/EDR inquiry | |
177d0506 WK |
3077 | * will stop discovery when finished. If we will resolve |
3078 | * remote device name, do not change discovery state. | |
07d2334a | 3079 | */ |
177d0506 WK |
3080 | if (!test_bit(HCI_INQUIRY, &hdev->flags) && |
3081 | hdev->discovery.state != DISCOVERY_RESOLVING) | |
07d2334a JP |
3082 | hci_discovery_set_state(hdev, |
3083 | DISCOVERY_STOPPED); | |
3084 | } else { | |
baf880a9 JH |
3085 | struct hci_request req; |
3086 | ||
07d2334a JP |
3087 | hci_inquiry_cache_flush(hdev); |
3088 | ||
baf880a9 JH |
3089 | hci_req_init(&req, hdev); |
3090 | ||
3091 | memset(&cp, 0, sizeof(cp)); | |
3092 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3093 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3094 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
3095 | ||
07d2334a JP |
3096 | err = hci_req_run(&req, inquiry_complete); |
3097 | if (err) { | |
3098 | BT_ERR("Inquiry request failed: err %d", err); | |
3099 | hci_discovery_set_state(hdev, | |
3100 | DISCOVERY_STOPPED); | |
3101 | } | |
4c87eaab | 3102 | } |
7dbfac1d | 3103 | |
4c87eaab AG |
3104 | hci_dev_unlock(hdev); |
3105 | break; | |
7dbfac1d | 3106 | } |
7dbfac1d AG |
3107 | } |
3108 | ||
7ba8b4be AG |
3109 | static void le_scan_disable_work(struct work_struct *work) |
3110 | { | |
3111 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3112 | le_scan_disable.work); |
4c87eaab AG |
3113 | struct hci_request req; |
3114 | int err; | |
7ba8b4be AG |
3115 | |
3116 | BT_DBG("%s", hdev->name); | |
3117 | ||
2d28cfe7 JP |
3118 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
3119 | ||
4c87eaab | 3120 | hci_req_init(&req, hdev); |
28b75a89 | 3121 | |
b1efcc28 | 3122 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3123 | |
4c87eaab AG |
3124 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3125 | if (err) | |
3126 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3127 | } |
3128 | ||
2d28cfe7 JP |
3129 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
3130 | u16 opcode) | |
3131 | { | |
3132 | unsigned long timeout, duration, scan_start, now; | |
3133 | ||
3134 | BT_DBG("%s", hdev->name); | |
3135 | ||
3136 | if (status) { | |
3137 | BT_ERR("Failed to restart LE scan: status %d", status); | |
3138 | return; | |
3139 | } | |
3140 | ||
3141 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
3142 | !hdev->discovery.scan_start) | |
3143 | return; | |
3144 | ||
3145 | /* When the scan was started, hdev->le_scan_disable has been queued | |
3146 | * after duration from scan_start. During scan restart this job | |
3147 | * has been canceled, and we need to queue it again after proper | |
3148 | * timeout, to make sure that scan does not run indefinitely. | |
3149 | */ | |
3150 | duration = hdev->discovery.scan_duration; | |
3151 | scan_start = hdev->discovery.scan_start; | |
3152 | now = jiffies; | |
3153 | if (now - scan_start <= duration) { | |
3154 | int elapsed; | |
3155 | ||
3156 | if (now >= scan_start) | |
3157 | elapsed = now - scan_start; | |
3158 | else | |
3159 | elapsed = ULONG_MAX - scan_start + now; | |
3160 | ||
3161 | timeout = duration - elapsed; | |
3162 | } else { | |
3163 | timeout = 0; | |
3164 | } | |
3165 | queue_delayed_work(hdev->workqueue, | |
3166 | &hdev->le_scan_disable, timeout); | |
3167 | } | |
3168 | ||
3169 | static void le_scan_restart_work(struct work_struct *work) | |
3170 | { | |
3171 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
3172 | le_scan_restart.work); | |
3173 | struct hci_request req; | |
3174 | struct hci_cp_le_set_scan_enable cp; | |
3175 | int err; | |
3176 | ||
3177 | BT_DBG("%s", hdev->name); | |
3178 | ||
3179 | /* If controller is not scanning we are done. */ | |
d7a5a11d | 3180 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2d28cfe7 JP |
3181 | return; |
3182 | ||
3183 | hci_req_init(&req, hdev); | |
3184 | ||
3185 | hci_req_add_le_scan_disable(&req); | |
3186 | ||
3187 | memset(&cp, 0, sizeof(cp)); | |
3188 | cp.enable = LE_SCAN_ENABLE; | |
3189 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
3190 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
3191 | ||
3192 | err = hci_req_run(&req, le_scan_restart_work_complete); | |
3193 | if (err) | |
3194 | BT_ERR("Restart LE scan request failed: err %d", err); | |
3195 | } | |
3196 | ||
a1f4c318 JH |
3197 | /* Copy the Identity Address of the controller. |
3198 | * | |
3199 | * If the controller has a public BD_ADDR, then by default use that one. | |
3200 | * If this is a LE only controller without a public address, default to | |
3201 | * the static random address. | |
3202 | * | |
3203 | * For debugging purposes it is possible to force controllers with a | |
3204 | * public address to use the static random address instead. | |
50b5b952 MH |
3205 | * |
3206 | * In case BR/EDR has been disabled on a dual-mode controller and | |
3207 | * userspace has configured a static address, then that address | |
3208 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
3209 | */ |
3210 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3211 | u8 *bdaddr_type) | |
3212 | { | |
b7cb93e5 | 3213 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 3214 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 3215 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 3216 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
3217 | bacpy(bdaddr, &hdev->static_addr); |
3218 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3219 | } else { | |
3220 | bacpy(bdaddr, &hdev->bdaddr); | |
3221 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3222 | } | |
3223 | } | |
3224 | ||
9be0dab7 DH |
3225 | /* Alloc HCI device */ |
3226 | struct hci_dev *hci_alloc_dev(void) | |
3227 | { | |
3228 | struct hci_dev *hdev; | |
3229 | ||
27f70f3e | 3230 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3231 | if (!hdev) |
3232 | return NULL; | |
3233 | ||
b1b813d4 DH |
3234 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3235 | hdev->esco_type = (ESCO_HV1); | |
3236 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3237 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3238 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3239 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3240 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3241 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
3242 | hdev->adv_instance_cnt = 0; |
3243 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 3244 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 3245 | |
b1b813d4 DH |
3246 | hdev->sniff_max_interval = 800; |
3247 | hdev->sniff_min_interval = 80; | |
3248 | ||
3f959d46 | 3249 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3250 | hdev->le_adv_min_interval = 0x0800; |
3251 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3252 | hdev->le_scan_interval = 0x0060; |
3253 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3254 | hdev->le_conn_min_interval = 0x0028; |
3255 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3256 | hdev->le_conn_latency = 0x0000; |
3257 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3258 | hdev->le_def_tx_len = 0x001b; |
3259 | hdev->le_def_tx_time = 0x0148; | |
3260 | hdev->le_max_tx_len = 0x001b; | |
3261 | hdev->le_max_tx_time = 0x0148; | |
3262 | hdev->le_max_rx_len = 0x001b; | |
3263 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3264 | |
d6bfd59c | 3265 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3266 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3267 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3268 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3269 | |
b1b813d4 DH |
3270 | mutex_init(&hdev->lock); |
3271 | mutex_init(&hdev->req_lock); | |
3272 | ||
3273 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3274 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3275 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3276 | INIT_LIST_HEAD(&hdev->uuids); |
3277 | INIT_LIST_HEAD(&hdev->link_keys); | |
3278 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3279 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3280 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3281 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3282 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3283 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3284 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3285 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 3286 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
3287 | |
3288 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3289 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3290 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3291 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3292 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3293 | |
b1b813d4 DH |
3294 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3295 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3296 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2d28cfe7 | 3297 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
5d900e46 | 3298 | INIT_DELAYED_WORK(&hdev->adv_instance_expire, hci_adv_timeout_expire); |
b1b813d4 | 3299 | |
b1b813d4 DH |
3300 | skb_queue_head_init(&hdev->rx_q); |
3301 | skb_queue_head_init(&hdev->cmd_q); | |
3302 | skb_queue_head_init(&hdev->raw_q); | |
3303 | ||
3304 | init_waitqueue_head(&hdev->req_wait_q); | |
3305 | ||
65cc2b49 | 3306 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3307 | |
b1b813d4 DH |
3308 | hci_init_sysfs(hdev); |
3309 | discovery_init(hdev); | |
9be0dab7 DH |
3310 | |
3311 | return hdev; | |
3312 | } | |
3313 | EXPORT_SYMBOL(hci_alloc_dev); | |
3314 | ||
3315 | /* Free HCI device */ | |
3316 | void hci_free_dev(struct hci_dev *hdev) | |
3317 | { | |
9be0dab7 DH |
3318 | /* will free via device release */ |
3319 | put_device(&hdev->dev); | |
3320 | } | |
3321 | EXPORT_SYMBOL(hci_free_dev); | |
3322 | ||
1da177e4 LT |
3323 | /* Register HCI device */ |
3324 | int hci_register_dev(struct hci_dev *hdev) | |
3325 | { | |
b1b813d4 | 3326 | int id, error; |
1da177e4 | 3327 | |
74292d5a | 3328 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3329 | return -EINVAL; |
3330 | ||
08add513 MM |
3331 | /* Do not allow HCI_AMP devices to register at index 0, |
3332 | * so the index can be used as the AMP controller ID. | |
3333 | */ | |
3df92b31 SL |
3334 | switch (hdev->dev_type) { |
3335 | case HCI_BREDR: | |
3336 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3337 | break; | |
3338 | case HCI_AMP: | |
3339 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3340 | break; | |
3341 | default: | |
3342 | return -EINVAL; | |
1da177e4 | 3343 | } |
8e87d142 | 3344 | |
3df92b31 SL |
3345 | if (id < 0) |
3346 | return id; | |
3347 | ||
1da177e4 LT |
3348 | sprintf(hdev->name, "hci%d", id); |
3349 | hdev->id = id; | |
2d8b3a11 AE |
3350 | |
3351 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3352 | ||
d8537548 KC |
3353 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3354 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3355 | if (!hdev->workqueue) { |
3356 | error = -ENOMEM; | |
3357 | goto err; | |
3358 | } | |
f48fd9c8 | 3359 | |
d8537548 KC |
3360 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3361 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3362 | if (!hdev->req_workqueue) { |
3363 | destroy_workqueue(hdev->workqueue); | |
3364 | error = -ENOMEM; | |
3365 | goto err; | |
3366 | } | |
3367 | ||
0153e2ec MH |
3368 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3369 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3370 | ||
bdc3e0f1 MH |
3371 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3372 | ||
3373 | error = device_add(&hdev->dev); | |
33ca954d | 3374 | if (error < 0) |
54506918 | 3375 | goto err_wqueue; |
1da177e4 | 3376 | |
611b30f7 | 3377 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3378 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3379 | hdev); | |
611b30f7 MH |
3380 | if (hdev->rfkill) { |
3381 | if (rfkill_register(hdev->rfkill) < 0) { | |
3382 | rfkill_destroy(hdev->rfkill); | |
3383 | hdev->rfkill = NULL; | |
3384 | } | |
3385 | } | |
3386 | ||
5e130367 | 3387 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3388 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3389 | |
a1536da2 MH |
3390 | hci_dev_set_flag(hdev, HCI_SETUP); |
3391 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3392 | |
01cd3404 | 3393 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3394 | /* Assume BR/EDR support until proven otherwise (such as |
3395 | * through reading supported features during init. | |
3396 | */ | |
a1536da2 | 3397 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3398 | } |
ce2be9ac | 3399 | |
fcee3377 GP |
3400 | write_lock(&hci_dev_list_lock); |
3401 | list_add(&hdev->list, &hci_dev_list); | |
3402 | write_unlock(&hci_dev_list_lock); | |
3403 | ||
4a964404 MH |
3404 | /* Devices that are marked for raw-only usage are unconfigured |
3405 | * and should not be included in normal operation. | |
fee746b0 MH |
3406 | */ |
3407 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3408 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3409 | |
05fcd4c4 | 3410 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3411 | hci_dev_hold(hdev); |
1da177e4 | 3412 | |
19202573 | 3413 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3414 | |
1da177e4 | 3415 | return id; |
f48fd9c8 | 3416 | |
33ca954d DH |
3417 | err_wqueue: |
3418 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3419 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3420 | err: |
3df92b31 | 3421 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3422 | |
33ca954d | 3423 | return error; |
1da177e4 LT |
3424 | } |
3425 | EXPORT_SYMBOL(hci_register_dev); | |
3426 | ||
3427 | /* Unregister HCI device */ | |
59735631 | 3428 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3429 | { |
2d7cc19e | 3430 | int id; |
ef222013 | 3431 | |
c13854ce | 3432 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3433 | |
a1536da2 | 3434 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3435 | |
3df92b31 SL |
3436 | id = hdev->id; |
3437 | ||
f20d09d5 | 3438 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3439 | list_del(&hdev->list); |
f20d09d5 | 3440 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3441 | |
3442 | hci_dev_do_close(hdev); | |
3443 | ||
b9b5ef18 GP |
3444 | cancel_work_sync(&hdev->power_on); |
3445 | ||
ab81cbf9 | 3446 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3447 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3448 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3449 | hci_dev_lock(hdev); |
744cf19e | 3450 | mgmt_index_removed(hdev); |
09fd0de5 | 3451 | hci_dev_unlock(hdev); |
56e5cb86 | 3452 | } |
ab81cbf9 | 3453 | |
2e58ef3e JH |
3454 | /* mgmt_index_removed should take care of emptying the |
3455 | * pending list */ | |
3456 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3457 | ||
05fcd4c4 | 3458 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3459 | |
611b30f7 MH |
3460 | if (hdev->rfkill) { |
3461 | rfkill_unregister(hdev->rfkill); | |
3462 | rfkill_destroy(hdev->rfkill); | |
3463 | } | |
3464 | ||
bdc3e0f1 | 3465 | device_del(&hdev->dev); |
147e2d59 | 3466 | |
0153e2ec MH |
3467 | debugfs_remove_recursive(hdev->debugfs); |
3468 | ||
f48fd9c8 | 3469 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3470 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3471 | |
09fd0de5 | 3472 | hci_dev_lock(hdev); |
dcc36c16 | 3473 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3474 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3475 | hci_uuids_clear(hdev); |
55ed8ca1 | 3476 | hci_link_keys_clear(hdev); |
b899efaf | 3477 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3478 | hci_smp_irks_clear(hdev); |
2763eda6 | 3479 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3480 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3481 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3482 | hci_conn_params_clear_all(hdev); |
22078800 | 3483 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3484 | hci_dev_unlock(hdev); |
e2e0cacb | 3485 | |
dc946bd8 | 3486 | hci_dev_put(hdev); |
3df92b31 SL |
3487 | |
3488 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3489 | } |
3490 | EXPORT_SYMBOL(hci_unregister_dev); | |
3491 | ||
3492 | /* Suspend HCI device */ | |
3493 | int hci_suspend_dev(struct hci_dev *hdev) | |
3494 | { | |
05fcd4c4 | 3495 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3496 | return 0; |
3497 | } | |
3498 | EXPORT_SYMBOL(hci_suspend_dev); | |
3499 | ||
3500 | /* Resume HCI device */ | |
3501 | int hci_resume_dev(struct hci_dev *hdev) | |
3502 | { | |
05fcd4c4 | 3503 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3504 | return 0; |
3505 | } | |
3506 | EXPORT_SYMBOL(hci_resume_dev); | |
3507 | ||
75e0569f MH |
3508 | /* Reset HCI device */ |
3509 | int hci_reset_dev(struct hci_dev *hdev) | |
3510 | { | |
3511 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3512 | struct sk_buff *skb; | |
3513 | ||
3514 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3515 | if (!skb) | |
3516 | return -ENOMEM; | |
3517 | ||
3518 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3519 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3520 | ||
3521 | /* Send Hardware Error to upper stack */ | |
3522 | return hci_recv_frame(hdev, skb); | |
3523 | } | |
3524 | EXPORT_SYMBOL(hci_reset_dev); | |
3525 | ||
76bca880 | 3526 | /* Receive frame from HCI drivers */ |
e1a26170 | 3527 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3528 | { |
76bca880 | 3529 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3530 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3531 | kfree_skb(skb); |
3532 | return -ENXIO; | |
3533 | } | |
3534 | ||
fe806dce MH |
3535 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && |
3536 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
3537 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
3538 | kfree_skb(skb); | |
3539 | return -EINVAL; | |
3540 | } | |
3541 | ||
d82603c6 | 3542 | /* Incoming skb */ |
76bca880 MH |
3543 | bt_cb(skb)->incoming = 1; |
3544 | ||
3545 | /* Time stamp */ | |
3546 | __net_timestamp(skb); | |
3547 | ||
76bca880 | 3548 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3549 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3550 | |
76bca880 MH |
3551 | return 0; |
3552 | } | |
3553 | EXPORT_SYMBOL(hci_recv_frame); | |
3554 | ||
e875ff84 MH |
3555 | /* Receive diagnostic message from HCI drivers */ |
3556 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3557 | { | |
581d6fd6 MH |
3558 | /* Mark as diagnostic packet */ |
3559 | bt_cb(skb)->pkt_type = HCI_DIAG_PKT; | |
3560 | ||
e875ff84 MH |
3561 | /* Time stamp */ |
3562 | __net_timestamp(skb); | |
3563 | ||
581d6fd6 MH |
3564 | skb_queue_tail(&hdev->rx_q, skb); |
3565 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3566 | |
e875ff84 MH |
3567 | return 0; |
3568 | } | |
3569 | EXPORT_SYMBOL(hci_recv_diag); | |
3570 | ||
1da177e4 LT |
3571 | /* ---- Interface to upper protocols ---- */ |
3572 | ||
1da177e4 LT |
3573 | int hci_register_cb(struct hci_cb *cb) |
3574 | { | |
3575 | BT_DBG("%p name %s", cb, cb->name); | |
3576 | ||
fba7ecf0 | 3577 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3578 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3579 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3580 | |
3581 | return 0; | |
3582 | } | |
3583 | EXPORT_SYMBOL(hci_register_cb); | |
3584 | ||
3585 | int hci_unregister_cb(struct hci_cb *cb) | |
3586 | { | |
3587 | BT_DBG("%p name %s", cb, cb->name); | |
3588 | ||
fba7ecf0 | 3589 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3590 | list_del(&cb->list); |
fba7ecf0 | 3591 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3592 | |
3593 | return 0; | |
3594 | } | |
3595 | EXPORT_SYMBOL(hci_unregister_cb); | |
3596 | ||
51086991 | 3597 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3598 | { |
cdc52faa MH |
3599 | int err; |
3600 | ||
0d48d939 | 3601 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3602 | |
cd82e61c MH |
3603 | /* Time stamp */ |
3604 | __net_timestamp(skb); | |
1da177e4 | 3605 | |
cd82e61c MH |
3606 | /* Send copy to monitor */ |
3607 | hci_send_to_monitor(hdev, skb); | |
3608 | ||
3609 | if (atomic_read(&hdev->promisc)) { | |
3610 | /* Send copy to the sockets */ | |
470fe1b5 | 3611 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3612 | } |
3613 | ||
3614 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3615 | skb_orphan(skb); | |
3616 | ||
73d0d3c8 MH |
3617 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3618 | kfree_skb(skb); | |
3619 | return; | |
3620 | } | |
3621 | ||
cdc52faa MH |
3622 | err = hdev->send(hdev, skb); |
3623 | if (err < 0) { | |
3624 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3625 | kfree_skb(skb); | |
3626 | } | |
1da177e4 LT |
3627 | } |
3628 | ||
1ca3a9d0 | 3629 | /* Send HCI command */ |
07dc93dd JH |
3630 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3631 | const void *param) | |
1ca3a9d0 JH |
3632 | { |
3633 | struct sk_buff *skb; | |
3634 | ||
3635 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3636 | ||
3637 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3638 | if (!skb) { | |
3639 | BT_ERR("%s no memory for command", hdev->name); | |
3640 | return -ENOMEM; | |
3641 | } | |
3642 | ||
49c922bb | 3643 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3644 | * single-command requests. |
3645 | */ | |
242c0ebd | 3646 | bt_cb(skb)->hci.req_start = true; |
11714b3d | 3647 | |
1da177e4 | 3648 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3649 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3650 | |
3651 | return 0; | |
3652 | } | |
1da177e4 LT |
3653 | |
3654 | /* Get data from the previously sent command */ | |
a9de9248 | 3655 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3656 | { |
3657 | struct hci_command_hdr *hdr; | |
3658 | ||
3659 | if (!hdev->sent_cmd) | |
3660 | return NULL; | |
3661 | ||
3662 | hdr = (void *) hdev->sent_cmd->data; | |
3663 | ||
a9de9248 | 3664 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3665 | return NULL; |
3666 | ||
f0e09510 | 3667 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3668 | |
3669 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3670 | } | |
3671 | ||
fbef168f LP |
3672 | /* Send HCI command and wait for command commplete event */ |
3673 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3674 | const void *param, u32 timeout) | |
3675 | { | |
3676 | struct sk_buff *skb; | |
3677 | ||
3678 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3679 | return ERR_PTR(-ENETDOWN); | |
3680 | ||
3681 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3682 | ||
3683 | hci_req_lock(hdev); | |
3684 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); | |
3685 | hci_req_unlock(hdev); | |
3686 | ||
3687 | return skb; | |
3688 | } | |
3689 | EXPORT_SYMBOL(hci_cmd_sync); | |
3690 | ||
1da177e4 LT |
3691 | /* Send ACL data */ |
3692 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3693 | { | |
3694 | struct hci_acl_hdr *hdr; | |
3695 | int len = skb->len; | |
3696 | ||
badff6d0 ACM |
3697 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3698 | skb_reset_transport_header(skb); | |
9c70220b | 3699 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3700 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3701 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3702 | } |
3703 | ||
ee22be7e | 3704 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3705 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3706 | { |
ee22be7e | 3707 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3708 | struct hci_dev *hdev = conn->hdev; |
3709 | struct sk_buff *list; | |
3710 | ||
087bfd99 GP |
3711 | skb->len = skb_headlen(skb); |
3712 | skb->data_len = 0; | |
3713 | ||
3714 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3715 | |
3716 | switch (hdev->dev_type) { | |
3717 | case HCI_BREDR: | |
3718 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3719 | break; | |
3720 | case HCI_AMP: | |
3721 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3722 | break; | |
3723 | default: | |
3724 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3725 | return; | |
3726 | } | |
087bfd99 | 3727 | |
70f23020 AE |
3728 | list = skb_shinfo(skb)->frag_list; |
3729 | if (!list) { | |
1da177e4 LT |
3730 | /* Non fragmented */ |
3731 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3732 | ||
73d80deb | 3733 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3734 | } else { |
3735 | /* Fragmented */ | |
3736 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3737 | ||
3738 | skb_shinfo(skb)->frag_list = NULL; | |
3739 | ||
9cfd5a23 JR |
3740 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3741 | * here because of 6LoWPAN links, as there this function is | |
3742 | * called from softirq and using normal spin lock could cause | |
3743 | * deadlocks. | |
3744 | */ | |
3745 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3746 | |
73d80deb | 3747 | __skb_queue_tail(queue, skb); |
e702112f AE |
3748 | |
3749 | flags &= ~ACL_START; | |
3750 | flags |= ACL_CONT; | |
1da177e4 LT |
3751 | do { |
3752 | skb = list; list = list->next; | |
8e87d142 | 3753 | |
0d48d939 | 3754 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3755 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3756 | |
3757 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3758 | ||
73d80deb | 3759 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3760 | } while (list); |
3761 | ||
9cfd5a23 | 3762 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3763 | } |
73d80deb LAD |
3764 | } |
3765 | ||
3766 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3767 | { | |
ee22be7e | 3768 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3769 | |
f0e09510 | 3770 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3771 | |
ee22be7e | 3772 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3773 | |
3eff45ea | 3774 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3775 | } |
1da177e4 LT |
3776 | |
3777 | /* Send SCO data */ | |
0d861d8b | 3778 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3779 | { |
3780 | struct hci_dev *hdev = conn->hdev; | |
3781 | struct hci_sco_hdr hdr; | |
3782 | ||
3783 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3784 | ||
aca3192c | 3785 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3786 | hdr.dlen = skb->len; |
3787 | ||
badff6d0 ACM |
3788 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3789 | skb_reset_transport_header(skb); | |
9c70220b | 3790 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3791 | |
0d48d939 | 3792 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3793 | |
1da177e4 | 3794 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3795 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3796 | } |
1da177e4 LT |
3797 | |
3798 | /* ---- HCI TX task (outgoing data) ---- */ | |
3799 | ||
3800 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3801 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3802 | int *quote) | |
1da177e4 LT |
3803 | { |
3804 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3805 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3806 | unsigned int num = 0, min = ~0; |
1da177e4 | 3807 | |
8e87d142 | 3808 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3809 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3810 | |
3811 | rcu_read_lock(); | |
3812 | ||
3813 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3814 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3815 | continue; |
769be974 MH |
3816 | |
3817 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3818 | continue; | |
3819 | ||
1da177e4 LT |
3820 | num++; |
3821 | ||
3822 | if (c->sent < min) { | |
3823 | min = c->sent; | |
3824 | conn = c; | |
3825 | } | |
52087a79 LAD |
3826 | |
3827 | if (hci_conn_num(hdev, type) == num) | |
3828 | break; | |
1da177e4 LT |
3829 | } |
3830 | ||
bf4c6325 GP |
3831 | rcu_read_unlock(); |
3832 | ||
1da177e4 | 3833 | if (conn) { |
6ed58ec5 VT |
3834 | int cnt, q; |
3835 | ||
3836 | switch (conn->type) { | |
3837 | case ACL_LINK: | |
3838 | cnt = hdev->acl_cnt; | |
3839 | break; | |
3840 | case SCO_LINK: | |
3841 | case ESCO_LINK: | |
3842 | cnt = hdev->sco_cnt; | |
3843 | break; | |
3844 | case LE_LINK: | |
3845 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3846 | break; | |
3847 | default: | |
3848 | cnt = 0; | |
3849 | BT_ERR("Unknown link type"); | |
3850 | } | |
3851 | ||
3852 | q = cnt / num; | |
1da177e4 LT |
3853 | *quote = q ? q : 1; |
3854 | } else | |
3855 | *quote = 0; | |
3856 | ||
3857 | BT_DBG("conn %p quote %d", conn, *quote); | |
3858 | return conn; | |
3859 | } | |
3860 | ||
6039aa73 | 3861 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3862 | { |
3863 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3864 | struct hci_conn *c; |
1da177e4 | 3865 | |
bae1f5d9 | 3866 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3867 | |
bf4c6325 GP |
3868 | rcu_read_lock(); |
3869 | ||
1da177e4 | 3870 | /* Kill stalled connections */ |
bf4c6325 | 3871 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3872 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3873 | BT_ERR("%s killing stalled connection %pMR", |
3874 | hdev->name, &c->dst); | |
bed71748 | 3875 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3876 | } |
3877 | } | |
bf4c6325 GP |
3878 | |
3879 | rcu_read_unlock(); | |
1da177e4 LT |
3880 | } |
3881 | ||
6039aa73 GP |
3882 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3883 | int *quote) | |
1da177e4 | 3884 | { |
73d80deb LAD |
3885 | struct hci_conn_hash *h = &hdev->conn_hash; |
3886 | struct hci_chan *chan = NULL; | |
abc5de8f | 3887 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3888 | struct hci_conn *conn; |
73d80deb LAD |
3889 | int cnt, q, conn_num = 0; |
3890 | ||
3891 | BT_DBG("%s", hdev->name); | |
3892 | ||
bf4c6325 GP |
3893 | rcu_read_lock(); |
3894 | ||
3895 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3896 | struct hci_chan *tmp; |
3897 | ||
3898 | if (conn->type != type) | |
3899 | continue; | |
3900 | ||
3901 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3902 | continue; | |
3903 | ||
3904 | conn_num++; | |
3905 | ||
8192edef | 3906 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3907 | struct sk_buff *skb; |
3908 | ||
3909 | if (skb_queue_empty(&tmp->data_q)) | |
3910 | continue; | |
3911 | ||
3912 | skb = skb_peek(&tmp->data_q); | |
3913 | if (skb->priority < cur_prio) | |
3914 | continue; | |
3915 | ||
3916 | if (skb->priority > cur_prio) { | |
3917 | num = 0; | |
3918 | min = ~0; | |
3919 | cur_prio = skb->priority; | |
3920 | } | |
3921 | ||
3922 | num++; | |
3923 | ||
3924 | if (conn->sent < min) { | |
3925 | min = conn->sent; | |
3926 | chan = tmp; | |
3927 | } | |
3928 | } | |
3929 | ||
3930 | if (hci_conn_num(hdev, type) == conn_num) | |
3931 | break; | |
3932 | } | |
3933 | ||
bf4c6325 GP |
3934 | rcu_read_unlock(); |
3935 | ||
73d80deb LAD |
3936 | if (!chan) |
3937 | return NULL; | |
3938 | ||
3939 | switch (chan->conn->type) { | |
3940 | case ACL_LINK: | |
3941 | cnt = hdev->acl_cnt; | |
3942 | break; | |
bd1eb66b AE |
3943 | case AMP_LINK: |
3944 | cnt = hdev->block_cnt; | |
3945 | break; | |
73d80deb LAD |
3946 | case SCO_LINK: |
3947 | case ESCO_LINK: | |
3948 | cnt = hdev->sco_cnt; | |
3949 | break; | |
3950 | case LE_LINK: | |
3951 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3952 | break; | |
3953 | default: | |
3954 | cnt = 0; | |
3955 | BT_ERR("Unknown link type"); | |
3956 | } | |
3957 | ||
3958 | q = cnt / num; | |
3959 | *quote = q ? q : 1; | |
3960 | BT_DBG("chan %p quote %d", chan, *quote); | |
3961 | return chan; | |
3962 | } | |
3963 | ||
02b20f0b LAD |
3964 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3965 | { | |
3966 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3967 | struct hci_conn *conn; | |
3968 | int num = 0; | |
3969 | ||
3970 | BT_DBG("%s", hdev->name); | |
3971 | ||
bf4c6325 GP |
3972 | rcu_read_lock(); |
3973 | ||
3974 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3975 | struct hci_chan *chan; |
3976 | ||
3977 | if (conn->type != type) | |
3978 | continue; | |
3979 | ||
3980 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3981 | continue; | |
3982 | ||
3983 | num++; | |
3984 | ||
8192edef | 3985 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3986 | struct sk_buff *skb; |
3987 | ||
3988 | if (chan->sent) { | |
3989 | chan->sent = 0; | |
3990 | continue; | |
3991 | } | |
3992 | ||
3993 | if (skb_queue_empty(&chan->data_q)) | |
3994 | continue; | |
3995 | ||
3996 | skb = skb_peek(&chan->data_q); | |
3997 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3998 | continue; | |
3999 | ||
4000 | skb->priority = HCI_PRIO_MAX - 1; | |
4001 | ||
4002 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4003 | skb->priority); |
02b20f0b LAD |
4004 | } |
4005 | ||
4006 | if (hci_conn_num(hdev, type) == num) | |
4007 | break; | |
4008 | } | |
bf4c6325 GP |
4009 | |
4010 | rcu_read_unlock(); | |
4011 | ||
02b20f0b LAD |
4012 | } |
4013 | ||
b71d385a AE |
4014 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4015 | { | |
4016 | /* Calculate count of blocks used by this packet */ | |
4017 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4018 | } | |
4019 | ||
6039aa73 | 4020 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4021 | { |
d7a5a11d | 4022 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
4023 | /* ACL tx timeout must be longer than maximum |
4024 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4025 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4026 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4027 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4028 | } |
63d2bc1b | 4029 | } |
1da177e4 | 4030 | |
6039aa73 | 4031 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4032 | { |
4033 | unsigned int cnt = hdev->acl_cnt; | |
4034 | struct hci_chan *chan; | |
4035 | struct sk_buff *skb; | |
4036 | int quote; | |
4037 | ||
4038 | __check_timeout(hdev, cnt); | |
04837f64 | 4039 | |
73d80deb | 4040 | while (hdev->acl_cnt && |
a8c5fb1a | 4041 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4042 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4043 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4044 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4045 | skb->len, skb->priority); |
73d80deb | 4046 | |
ec1cce24 LAD |
4047 | /* Stop if priority has changed */ |
4048 | if (skb->priority < priority) | |
4049 | break; | |
4050 | ||
4051 | skb = skb_dequeue(&chan->data_q); | |
4052 | ||
73d80deb | 4053 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4054 | bt_cb(skb)->force_active); |
04837f64 | 4055 | |
57d17d70 | 4056 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4057 | hdev->acl_last_tx = jiffies; |
4058 | ||
4059 | hdev->acl_cnt--; | |
73d80deb LAD |
4060 | chan->sent++; |
4061 | chan->conn->sent++; | |
1da177e4 LT |
4062 | } |
4063 | } | |
02b20f0b LAD |
4064 | |
4065 | if (cnt != hdev->acl_cnt) | |
4066 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4067 | } |
4068 | ||
6039aa73 | 4069 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4070 | { |
63d2bc1b | 4071 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4072 | struct hci_chan *chan; |
4073 | struct sk_buff *skb; | |
4074 | int quote; | |
bd1eb66b | 4075 | u8 type; |
b71d385a | 4076 | |
63d2bc1b | 4077 | __check_timeout(hdev, cnt); |
b71d385a | 4078 | |
bd1eb66b AE |
4079 | BT_DBG("%s", hdev->name); |
4080 | ||
4081 | if (hdev->dev_type == HCI_AMP) | |
4082 | type = AMP_LINK; | |
4083 | else | |
4084 | type = ACL_LINK; | |
4085 | ||
b71d385a | 4086 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4087 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4088 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4089 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4090 | int blocks; | |
4091 | ||
4092 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4093 | skb->len, skb->priority); |
b71d385a AE |
4094 | |
4095 | /* Stop if priority has changed */ | |
4096 | if (skb->priority < priority) | |
4097 | break; | |
4098 | ||
4099 | skb = skb_dequeue(&chan->data_q); | |
4100 | ||
4101 | blocks = __get_blocks(hdev, skb); | |
4102 | if (blocks > hdev->block_cnt) | |
4103 | return; | |
4104 | ||
4105 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4106 | bt_cb(skb)->force_active); |
b71d385a | 4107 | |
57d17d70 | 4108 | hci_send_frame(hdev, skb); |
b71d385a AE |
4109 | hdev->acl_last_tx = jiffies; |
4110 | ||
4111 | hdev->block_cnt -= blocks; | |
4112 | quote -= blocks; | |
4113 | ||
4114 | chan->sent += blocks; | |
4115 | chan->conn->sent += blocks; | |
4116 | } | |
4117 | } | |
4118 | ||
4119 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4120 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4121 | } |
4122 | ||
6039aa73 | 4123 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4124 | { |
4125 | BT_DBG("%s", hdev->name); | |
4126 | ||
bd1eb66b AE |
4127 | /* No ACL link over BR/EDR controller */ |
4128 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4129 | return; | |
4130 | ||
4131 | /* No AMP link over AMP controller */ | |
4132 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4133 | return; |
4134 | ||
4135 | switch (hdev->flow_ctl_mode) { | |
4136 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4137 | hci_sched_acl_pkt(hdev); | |
4138 | break; | |
4139 | ||
4140 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4141 | hci_sched_acl_blk(hdev); | |
4142 | break; | |
4143 | } | |
4144 | } | |
4145 | ||
1da177e4 | 4146 | /* Schedule SCO */ |
6039aa73 | 4147 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4148 | { |
4149 | struct hci_conn *conn; | |
4150 | struct sk_buff *skb; | |
4151 | int quote; | |
4152 | ||
4153 | BT_DBG("%s", hdev->name); | |
4154 | ||
52087a79 LAD |
4155 | if (!hci_conn_num(hdev, SCO_LINK)) |
4156 | return; | |
4157 | ||
1da177e4 LT |
4158 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4159 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4160 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4161 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4162 | |
4163 | conn->sent++; | |
4164 | if (conn->sent == ~0) | |
4165 | conn->sent = 0; | |
4166 | } | |
4167 | } | |
4168 | } | |
4169 | ||
6039aa73 | 4170 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4171 | { |
4172 | struct hci_conn *conn; | |
4173 | struct sk_buff *skb; | |
4174 | int quote; | |
4175 | ||
4176 | BT_DBG("%s", hdev->name); | |
4177 | ||
52087a79 LAD |
4178 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4179 | return; | |
4180 | ||
8fc9ced3 GP |
4181 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4182 | "e))) { | |
b6a0dc82 MH |
4183 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4184 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4185 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4186 | |
4187 | conn->sent++; | |
4188 | if (conn->sent == ~0) | |
4189 | conn->sent = 0; | |
4190 | } | |
4191 | } | |
4192 | } | |
4193 | ||
6039aa73 | 4194 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4195 | { |
73d80deb | 4196 | struct hci_chan *chan; |
6ed58ec5 | 4197 | struct sk_buff *skb; |
02b20f0b | 4198 | int quote, cnt, tmp; |
6ed58ec5 VT |
4199 | |
4200 | BT_DBG("%s", hdev->name); | |
4201 | ||
52087a79 LAD |
4202 | if (!hci_conn_num(hdev, LE_LINK)) |
4203 | return; | |
4204 | ||
d7a5a11d | 4205 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
4206 | /* LE tx timeout must be longer than maximum |
4207 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4208 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4209 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4210 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4211 | } |
4212 | ||
4213 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4214 | tmp = cnt; |
73d80deb | 4215 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4216 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4217 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4218 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4219 | skb->len, skb->priority); |
6ed58ec5 | 4220 | |
ec1cce24 LAD |
4221 | /* Stop if priority has changed */ |
4222 | if (skb->priority < priority) | |
4223 | break; | |
4224 | ||
4225 | skb = skb_dequeue(&chan->data_q); | |
4226 | ||
57d17d70 | 4227 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4228 | hdev->le_last_tx = jiffies; |
4229 | ||
4230 | cnt--; | |
73d80deb LAD |
4231 | chan->sent++; |
4232 | chan->conn->sent++; | |
6ed58ec5 VT |
4233 | } |
4234 | } | |
73d80deb | 4235 | |
6ed58ec5 VT |
4236 | if (hdev->le_pkts) |
4237 | hdev->le_cnt = cnt; | |
4238 | else | |
4239 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4240 | |
4241 | if (cnt != tmp) | |
4242 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4243 | } |
4244 | ||
3eff45ea | 4245 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4246 | { |
3eff45ea | 4247 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4248 | struct sk_buff *skb; |
4249 | ||
6ed58ec5 | 4250 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4251 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4252 | |
d7a5a11d | 4253 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4254 | /* Schedule queues and send stuff to HCI driver */ |
4255 | hci_sched_acl(hdev); | |
4256 | hci_sched_sco(hdev); | |
4257 | hci_sched_esco(hdev); | |
4258 | hci_sched_le(hdev); | |
4259 | } | |
6ed58ec5 | 4260 | |
1da177e4 LT |
4261 | /* Send next queued raw (unknown type) packet */ |
4262 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4263 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4264 | } |
4265 | ||
25985edc | 4266 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4267 | |
4268 | /* ACL data packet */ | |
6039aa73 | 4269 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4270 | { |
4271 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4272 | struct hci_conn *conn; | |
4273 | __u16 handle, flags; | |
4274 | ||
4275 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4276 | ||
4277 | handle = __le16_to_cpu(hdr->handle); | |
4278 | flags = hci_flags(handle); | |
4279 | handle = hci_handle(handle); | |
4280 | ||
f0e09510 | 4281 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4282 | handle, flags); |
1da177e4 LT |
4283 | |
4284 | hdev->stat.acl_rx++; | |
4285 | ||
4286 | hci_dev_lock(hdev); | |
4287 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4288 | hci_dev_unlock(hdev); | |
8e87d142 | 4289 | |
1da177e4 | 4290 | if (conn) { |
65983fc7 | 4291 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4292 | |
1da177e4 | 4293 | /* Send to upper protocol */ |
686ebf28 UF |
4294 | l2cap_recv_acldata(conn, skb, flags); |
4295 | return; | |
1da177e4 | 4296 | } else { |
8e87d142 | 4297 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4298 | hdev->name, handle); |
1da177e4 LT |
4299 | } |
4300 | ||
4301 | kfree_skb(skb); | |
4302 | } | |
4303 | ||
4304 | /* SCO data packet */ | |
6039aa73 | 4305 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4306 | { |
4307 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4308 | struct hci_conn *conn; | |
4309 | __u16 handle; | |
4310 | ||
4311 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4312 | ||
4313 | handle = __le16_to_cpu(hdr->handle); | |
4314 | ||
f0e09510 | 4315 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4316 | |
4317 | hdev->stat.sco_rx++; | |
4318 | ||
4319 | hci_dev_lock(hdev); | |
4320 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4321 | hci_dev_unlock(hdev); | |
4322 | ||
4323 | if (conn) { | |
1da177e4 | 4324 | /* Send to upper protocol */ |
686ebf28 UF |
4325 | sco_recv_scodata(conn, skb); |
4326 | return; | |
1da177e4 | 4327 | } else { |
8e87d142 | 4328 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4329 | hdev->name, handle); |
1da177e4 LT |
4330 | } |
4331 | ||
4332 | kfree_skb(skb); | |
4333 | } | |
4334 | ||
9238f36a JH |
4335 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4336 | { | |
4337 | struct sk_buff *skb; | |
4338 | ||
4339 | skb = skb_peek(&hdev->cmd_q); | |
4340 | if (!skb) | |
4341 | return true; | |
4342 | ||
242c0ebd | 4343 | return bt_cb(skb)->hci.req_start; |
9238f36a JH |
4344 | } |
4345 | ||
42c6b129 JH |
4346 | static void hci_resend_last(struct hci_dev *hdev) |
4347 | { | |
4348 | struct hci_command_hdr *sent; | |
4349 | struct sk_buff *skb; | |
4350 | u16 opcode; | |
4351 | ||
4352 | if (!hdev->sent_cmd) | |
4353 | return; | |
4354 | ||
4355 | sent = (void *) hdev->sent_cmd->data; | |
4356 | opcode = __le16_to_cpu(sent->opcode); | |
4357 | if (opcode == HCI_OP_RESET) | |
4358 | return; | |
4359 | ||
4360 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4361 | if (!skb) | |
4362 | return; | |
4363 | ||
4364 | skb_queue_head(&hdev->cmd_q, skb); | |
4365 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4366 | } | |
4367 | ||
e6214487 JH |
4368 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4369 | hci_req_complete_t *req_complete, | |
4370 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4371 | { |
9238f36a JH |
4372 | struct sk_buff *skb; |
4373 | unsigned long flags; | |
4374 | ||
4375 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4376 | ||
42c6b129 JH |
4377 | /* If the completed command doesn't match the last one that was |
4378 | * sent we need to do special handling of it. | |
9238f36a | 4379 | */ |
42c6b129 JH |
4380 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4381 | /* Some CSR based controllers generate a spontaneous | |
4382 | * reset complete event during init and any pending | |
4383 | * command will never be completed. In such a case we | |
4384 | * need to resend whatever was the last sent | |
4385 | * command. | |
4386 | */ | |
4387 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4388 | hci_resend_last(hdev); | |
4389 | ||
9238f36a | 4390 | return; |
42c6b129 | 4391 | } |
9238f36a JH |
4392 | |
4393 | /* If the command succeeded and there's still more commands in | |
4394 | * this request the request is not yet complete. | |
4395 | */ | |
4396 | if (!status && !hci_req_is_complete(hdev)) | |
4397 | return; | |
4398 | ||
4399 | /* If this was the last command in a request the complete | |
4400 | * callback would be found in hdev->sent_cmd instead of the | |
4401 | * command queue (hdev->cmd_q). | |
4402 | */ | |
242c0ebd MH |
4403 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4404 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 JH |
4405 | return; |
4406 | } | |
53e21fbc | 4407 | |
242c0ebd MH |
4408 | if (bt_cb(hdev->sent_cmd)->hci.req_complete_skb) { |
4409 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 | 4410 | return; |
9238f36a JH |
4411 | } |
4412 | ||
4413 | /* Remove all pending commands belonging to this request */ | |
4414 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4415 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
242c0ebd | 4416 | if (bt_cb(skb)->hci.req_start) { |
9238f36a JH |
4417 | __skb_queue_head(&hdev->cmd_q, skb); |
4418 | break; | |
4419 | } | |
4420 | ||
242c0ebd MH |
4421 | *req_complete = bt_cb(skb)->hci.req_complete; |
4422 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
9238f36a JH |
4423 | kfree_skb(skb); |
4424 | } | |
4425 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4426 | } |
4427 | ||
b78752cc | 4428 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4429 | { |
b78752cc | 4430 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4431 | struct sk_buff *skb; |
4432 | ||
4433 | BT_DBG("%s", hdev->name); | |
4434 | ||
1da177e4 | 4435 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4436 | /* Send copy to monitor */ |
4437 | hci_send_to_monitor(hdev, skb); | |
4438 | ||
1da177e4 LT |
4439 | if (atomic_read(&hdev->promisc)) { |
4440 | /* Send copy to the sockets */ | |
470fe1b5 | 4441 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4442 | } |
4443 | ||
d7a5a11d | 4444 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4445 | kfree_skb(skb); |
4446 | continue; | |
4447 | } | |
4448 | ||
4449 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4450 | /* Don't process data packets in this states. */ | |
0d48d939 | 4451 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4452 | case HCI_ACLDATA_PKT: |
4453 | case HCI_SCODATA_PKT: | |
4454 | kfree_skb(skb); | |
4455 | continue; | |
3ff50b79 | 4456 | } |
1da177e4 LT |
4457 | } |
4458 | ||
4459 | /* Process frame */ | |
0d48d939 | 4460 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4461 | case HCI_EVENT_PKT: |
b78752cc | 4462 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4463 | hci_event_packet(hdev, skb); |
4464 | break; | |
4465 | ||
4466 | case HCI_ACLDATA_PKT: | |
4467 | BT_DBG("%s ACL data packet", hdev->name); | |
4468 | hci_acldata_packet(hdev, skb); | |
4469 | break; | |
4470 | ||
4471 | case HCI_SCODATA_PKT: | |
4472 | BT_DBG("%s SCO data packet", hdev->name); | |
4473 | hci_scodata_packet(hdev, skb); | |
4474 | break; | |
4475 | ||
4476 | default: | |
4477 | kfree_skb(skb); | |
4478 | break; | |
4479 | } | |
4480 | } | |
1da177e4 LT |
4481 | } |
4482 | ||
c347b765 | 4483 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4484 | { |
c347b765 | 4485 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4486 | struct sk_buff *skb; |
4487 | ||
2104786b AE |
4488 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4489 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4490 | |
1da177e4 | 4491 | /* Send queued commands */ |
5a08ecce AE |
4492 | if (atomic_read(&hdev->cmd_cnt)) { |
4493 | skb = skb_dequeue(&hdev->cmd_q); | |
4494 | if (!skb) | |
4495 | return; | |
4496 | ||
7585b97a | 4497 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4498 | |
a675d7f1 | 4499 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4500 | if (hdev->sent_cmd) { |
1da177e4 | 4501 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4502 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4503 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4504 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4505 | else |
65cc2b49 MH |
4506 | schedule_delayed_work(&hdev->cmd_timer, |
4507 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4508 | } else { |
4509 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4510 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4511 | } |
4512 | } | |
4513 | } |