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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 | ||
1da177e4 LT |
68 | /* ---- HCI notifications ---- */ |
69 | ||
6516455d | 70 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 71 | { |
040030ef | 72 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
73 | } |
74 | ||
baf27f6e MH |
75 | /* ---- HCI debugfs entries ---- */ |
76 | ||
4b4148e9 MH |
77 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | struct hci_dev *hdev = file->private_data; | |
81 | char buf[3]; | |
82 | ||
b7cb93e5 | 83 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y': 'N'; |
4b4148e9 MH |
84 | buf[1] = '\n'; |
85 | buf[2] = '\0'; | |
86 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
87 | } | |
88 | ||
89 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
90 | size_t count, loff_t *ppos) | |
91 | { | |
92 | struct hci_dev *hdev = file->private_data; | |
93 | struct sk_buff *skb; | |
94 | char buf[32]; | |
95 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
96 | bool enable; | |
4b4148e9 MH |
97 | |
98 | if (!test_bit(HCI_UP, &hdev->flags)) | |
99 | return -ENETDOWN; | |
100 | ||
101 | if (copy_from_user(buf, user_buf, buf_size)) | |
102 | return -EFAULT; | |
103 | ||
104 | buf[buf_size] = '\0'; | |
105 | if (strtobool(buf, &enable)) | |
106 | return -EINVAL; | |
107 | ||
b7cb93e5 | 108 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
109 | return -EALREADY; |
110 | ||
111 | hci_req_lock(hdev); | |
112 | if (enable) | |
113 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
114 | HCI_CMD_TIMEOUT); | |
115 | else | |
116 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
117 | HCI_CMD_TIMEOUT); | |
118 | hci_req_unlock(hdev); | |
119 | ||
120 | if (IS_ERR(skb)) | |
121 | return PTR_ERR(skb); | |
122 | ||
4b4148e9 MH |
123 | kfree_skb(skb); |
124 | ||
b7cb93e5 | 125 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
126 | |
127 | return count; | |
128 | } | |
129 | ||
130 | static const struct file_operations dut_mode_fops = { | |
131 | .open = simple_open, | |
132 | .read = dut_mode_read, | |
133 | .write = dut_mode_write, | |
134 | .llseek = default_llseek, | |
135 | }; | |
136 | ||
4b4113d6 MH |
137 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
138 | size_t count, loff_t *ppos) | |
139 | { | |
140 | struct hci_dev *hdev = file->private_data; | |
141 | char buf[3]; | |
142 | ||
143 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y': 'N'; | |
144 | buf[1] = '\n'; | |
145 | buf[2] = '\0'; | |
146 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
147 | } | |
148 | ||
149 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
150 | size_t count, loff_t *ppos) | |
151 | { | |
152 | struct hci_dev *hdev = file->private_data; | |
153 | char buf[32]; | |
154 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
155 | bool enable; | |
156 | int err; | |
157 | ||
158 | if (copy_from_user(buf, user_buf, buf_size)) | |
159 | return -EFAULT; | |
160 | ||
161 | buf[buf_size] = '\0'; | |
162 | if (strtobool(buf, &enable)) | |
163 | return -EINVAL; | |
164 | ||
165 | hci_req_lock(hdev); | |
166 | err = hdev->set_diag(hdev, enable); | |
167 | hci_req_unlock(hdev); | |
168 | ||
169 | if (err < 0) | |
170 | return err; | |
171 | ||
172 | if (enable) | |
173 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
174 | else | |
175 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
176 | ||
177 | return count; | |
178 | } | |
179 | ||
180 | static const struct file_operations vendor_diag_fops = { | |
181 | .open = simple_open, | |
182 | .read = vendor_diag_read, | |
183 | .write = vendor_diag_write, | |
184 | .llseek = default_llseek, | |
185 | }; | |
186 | ||
f640ee98 MH |
187 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
188 | { | |
189 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
190 | &dut_mode_fops); | |
191 | ||
192 | if (hdev->set_diag) | |
193 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
194 | &vendor_diag_fops); | |
195 | } | |
196 | ||
1da177e4 LT |
197 | /* ---- HCI requests ---- */ |
198 | ||
f60cb305 JH |
199 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
200 | struct sk_buff *skb) | |
1da177e4 | 201 | { |
42c6b129 | 202 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
203 | |
204 | if (hdev->req_status == HCI_REQ_PEND) { | |
205 | hdev->req_result = result; | |
206 | hdev->req_status = HCI_REQ_DONE; | |
f60cb305 JH |
207 | if (skb) |
208 | hdev->req_skb = skb_get(skb); | |
1da177e4 LT |
209 | wake_up_interruptible(&hdev->req_wait_q); |
210 | } | |
211 | } | |
212 | ||
213 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
214 | { | |
215 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
216 | ||
217 | if (hdev->req_status == HCI_REQ_PEND) { | |
218 | hdev->req_result = err; | |
219 | hdev->req_status = HCI_REQ_CANCELED; | |
220 | wake_up_interruptible(&hdev->req_wait_q); | |
221 | } | |
222 | } | |
223 | ||
7b1abbbe | 224 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 225 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
226 | { |
227 | DECLARE_WAITQUEUE(wait, current); | |
228 | struct hci_request req; | |
f60cb305 | 229 | struct sk_buff *skb; |
75e84b7c JH |
230 | int err = 0; |
231 | ||
232 | BT_DBG("%s", hdev->name); | |
233 | ||
234 | hci_req_init(&req, hdev); | |
235 | ||
7b1abbbe | 236 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
237 | |
238 | hdev->req_status = HCI_REQ_PEND; | |
239 | ||
75e84b7c JH |
240 | add_wait_queue(&hdev->req_wait_q, &wait); |
241 | set_current_state(TASK_INTERRUPTIBLE); | |
242 | ||
f60cb305 | 243 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
039fada5 CP |
244 | if (err < 0) { |
245 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
22a3ceab | 246 | set_current_state(TASK_RUNNING); |
039fada5 CP |
247 | return ERR_PTR(err); |
248 | } | |
249 | ||
75e84b7c JH |
250 | schedule_timeout(timeout); |
251 | ||
252 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
253 | ||
254 | if (signal_pending(current)) | |
255 | return ERR_PTR(-EINTR); | |
256 | ||
257 | switch (hdev->req_status) { | |
258 | case HCI_REQ_DONE: | |
259 | err = -bt_to_errno(hdev->req_result); | |
260 | break; | |
261 | ||
262 | case HCI_REQ_CANCELED: | |
263 | err = -hdev->req_result; | |
264 | break; | |
265 | ||
266 | default: | |
267 | err = -ETIMEDOUT; | |
268 | break; | |
269 | } | |
270 | ||
271 | hdev->req_status = hdev->req_result = 0; | |
f60cb305 JH |
272 | skb = hdev->req_skb; |
273 | hdev->req_skb = NULL; | |
75e84b7c JH |
274 | |
275 | BT_DBG("%s end: err %d", hdev->name, err); | |
276 | ||
f60cb305 JH |
277 | if (err < 0) { |
278 | kfree_skb(skb); | |
75e84b7c | 279 | return ERR_PTR(err); |
f60cb305 | 280 | } |
75e84b7c | 281 | |
757aa0b5 JH |
282 | if (!skb) |
283 | return ERR_PTR(-ENODATA); | |
284 | ||
285 | return skb; | |
7b1abbbe JH |
286 | } |
287 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
288 | ||
289 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 290 | const void *param, u32 timeout) |
7b1abbbe JH |
291 | { |
292 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
293 | } |
294 | EXPORT_SYMBOL(__hci_cmd_sync); | |
295 | ||
1da177e4 | 296 | /* Execute request and wait for completion. */ |
01178cd4 | 297 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
298 | void (*func)(struct hci_request *req, |
299 | unsigned long opt), | |
01178cd4 | 300 | unsigned long opt, __u32 timeout) |
1da177e4 | 301 | { |
42c6b129 | 302 | struct hci_request req; |
1da177e4 LT |
303 | DECLARE_WAITQUEUE(wait, current); |
304 | int err = 0; | |
305 | ||
306 | BT_DBG("%s start", hdev->name); | |
307 | ||
42c6b129 JH |
308 | hci_req_init(&req, hdev); |
309 | ||
1da177e4 LT |
310 | hdev->req_status = HCI_REQ_PEND; |
311 | ||
42c6b129 | 312 | func(&req, opt); |
53cce22d | 313 | |
039fada5 CP |
314 | add_wait_queue(&hdev->req_wait_q, &wait); |
315 | set_current_state(TASK_INTERRUPTIBLE); | |
316 | ||
f60cb305 | 317 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
42c6b129 | 318 | if (err < 0) { |
53cce22d | 319 | hdev->req_status = 0; |
920c8300 | 320 | |
039fada5 | 321 | remove_wait_queue(&hdev->req_wait_q, &wait); |
22a3ceab | 322 | set_current_state(TASK_RUNNING); |
039fada5 | 323 | |
920c8300 AG |
324 | /* ENODATA means the HCI request command queue is empty. |
325 | * This can happen when a request with conditionals doesn't | |
326 | * trigger any commands to be sent. This is normal behavior | |
327 | * and should not trigger an error return. | |
42c6b129 | 328 | */ |
920c8300 AG |
329 | if (err == -ENODATA) |
330 | return 0; | |
331 | ||
332 | return err; | |
53cce22d JH |
333 | } |
334 | ||
1da177e4 LT |
335 | schedule_timeout(timeout); |
336 | ||
337 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
338 | ||
339 | if (signal_pending(current)) | |
340 | return -EINTR; | |
341 | ||
342 | switch (hdev->req_status) { | |
343 | case HCI_REQ_DONE: | |
e175072f | 344 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
345 | break; |
346 | ||
347 | case HCI_REQ_CANCELED: | |
348 | err = -hdev->req_result; | |
349 | break; | |
350 | ||
351 | default: | |
352 | err = -ETIMEDOUT; | |
353 | break; | |
3ff50b79 | 354 | } |
1da177e4 | 355 | |
a5040efa | 356 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
357 | |
358 | BT_DBG("%s end: err %d", hdev->name, err); | |
359 | ||
360 | return err; | |
361 | } | |
362 | ||
01178cd4 | 363 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
364 | void (*req)(struct hci_request *req, |
365 | unsigned long opt), | |
01178cd4 | 366 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
367 | { |
368 | int ret; | |
369 | ||
7c6a329e MH |
370 | if (!test_bit(HCI_UP, &hdev->flags)) |
371 | return -ENETDOWN; | |
372 | ||
1da177e4 LT |
373 | /* Serialize all requests */ |
374 | hci_req_lock(hdev); | |
01178cd4 | 375 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
376 | hci_req_unlock(hdev); |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
42c6b129 | 381 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 382 | { |
42c6b129 | 383 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
384 | |
385 | /* Reset device */ | |
42c6b129 JH |
386 | set_bit(HCI_RESET, &req->hdev->flags); |
387 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
388 | } |
389 | ||
42c6b129 | 390 | static void bredr_init(struct hci_request *req) |
1da177e4 | 391 | { |
42c6b129 | 392 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 393 | |
1da177e4 | 394 | /* Read Local Supported Features */ |
42c6b129 | 395 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 396 | |
1143e5a6 | 397 | /* Read Local Version */ |
42c6b129 | 398 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
399 | |
400 | /* Read BD Address */ | |
42c6b129 | 401 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
402 | } |
403 | ||
0af801b9 | 404 | static void amp_init1(struct hci_request *req) |
e61ef499 | 405 | { |
42c6b129 | 406 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 407 | |
e61ef499 | 408 | /* Read Local Version */ |
42c6b129 | 409 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 410 | |
f6996cfe MH |
411 | /* Read Local Supported Commands */ |
412 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
413 | ||
6bcbc489 | 414 | /* Read Local AMP Info */ |
42c6b129 | 415 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
416 | |
417 | /* Read Data Blk size */ | |
42c6b129 | 418 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 419 | |
f38ba941 MH |
420 | /* Read Flow Control Mode */ |
421 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
422 | ||
7528ca1c MH |
423 | /* Read Location Data */ |
424 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
425 | } |
426 | ||
0af801b9 JH |
427 | static void amp_init2(struct hci_request *req) |
428 | { | |
429 | /* Read Local Supported Features. Not all AMP controllers | |
430 | * support this so it's placed conditionally in the second | |
431 | * stage init. | |
432 | */ | |
433 | if (req->hdev->commands[14] & 0x20) | |
434 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
435 | } | |
436 | ||
42c6b129 | 437 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 438 | { |
42c6b129 | 439 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
440 | |
441 | BT_DBG("%s %ld", hdev->name, opt); | |
442 | ||
11778716 AE |
443 | /* Reset */ |
444 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 445 | hci_reset_req(req, 0); |
11778716 | 446 | |
e61ef499 AE |
447 | switch (hdev->dev_type) { |
448 | case HCI_BREDR: | |
42c6b129 | 449 | bredr_init(req); |
e61ef499 AE |
450 | break; |
451 | ||
452 | case HCI_AMP: | |
0af801b9 | 453 | amp_init1(req); |
e61ef499 AE |
454 | break; |
455 | ||
456 | default: | |
457 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
458 | break; | |
459 | } | |
e61ef499 AE |
460 | } |
461 | ||
42c6b129 | 462 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 463 | { |
2177bab5 JH |
464 | __le16 param; |
465 | __u8 flt_type; | |
466 | ||
467 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 468 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
469 | |
470 | /* Read Class of Device */ | |
42c6b129 | 471 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
472 | |
473 | /* Read Local Name */ | |
42c6b129 | 474 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
475 | |
476 | /* Read Voice Setting */ | |
42c6b129 | 477 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 478 | |
b4cb9fb2 MH |
479 | /* Read Number of Supported IAC */ |
480 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
481 | ||
4b836f39 MH |
482 | /* Read Current IAC LAP */ |
483 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
484 | ||
2177bab5 JH |
485 | /* Clear Event Filters */ |
486 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 487 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
488 | |
489 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 490 | param = cpu_to_le16(0x7d00); |
42c6b129 | 491 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
492 | } |
493 | ||
42c6b129 | 494 | static void le_setup(struct hci_request *req) |
2177bab5 | 495 | { |
c73eee91 JH |
496 | struct hci_dev *hdev = req->hdev; |
497 | ||
2177bab5 | 498 | /* Read LE Buffer Size */ |
42c6b129 | 499 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
500 | |
501 | /* Read LE Local Supported Features */ | |
42c6b129 | 502 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 503 | |
747d3f03 MH |
504 | /* Read LE Supported States */ |
505 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
506 | ||
2177bab5 | 507 | /* Read LE White List Size */ |
42c6b129 | 508 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 509 | |
747d3f03 MH |
510 | /* Clear LE White List */ |
511 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
512 | |
513 | /* LE-only controllers have LE implicitly enabled */ | |
514 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 515 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
516 | } |
517 | ||
42c6b129 | 518 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 519 | { |
42c6b129 JH |
520 | struct hci_dev *hdev = req->hdev; |
521 | ||
2177bab5 JH |
522 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
523 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
524 | * command otherwise. | |
525 | */ | |
526 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
527 | ||
528 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
529 | * any event mask for pre 1.2 devices. | |
530 | */ | |
531 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
532 | return; | |
533 | ||
534 | if (lmp_bredr_capable(hdev)) { | |
535 | events[4] |= 0x01; /* Flow Specification Complete */ | |
536 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
537 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
538 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
539 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
540 | } else { |
541 | /* Use a different default for LE-only devices */ | |
542 | memset(events, 0, sizeof(events)); | |
543 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
544 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
545 | events[1] |= 0x20; /* Command Complete */ | |
546 | events[1] |= 0x40; /* Command Status */ | |
547 | events[1] |= 0x80; /* Hardware Error */ | |
548 | events[2] |= 0x04; /* Number of Completed Packets */ | |
549 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
550 | |
551 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
552 | events[0] |= 0x80; /* Encryption Change */ | |
553 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
554 | } | |
2177bab5 JH |
555 | } |
556 | ||
557 | if (lmp_inq_rssi_capable(hdev)) | |
558 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
559 | ||
560 | if (lmp_sniffsubr_capable(hdev)) | |
561 | events[5] |= 0x20; /* Sniff Subrating */ | |
562 | ||
563 | if (lmp_pause_enc_capable(hdev)) | |
564 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
565 | ||
566 | if (lmp_ext_inq_capable(hdev)) | |
567 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
568 | ||
569 | if (lmp_no_flush_capable(hdev)) | |
570 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
571 | ||
572 | if (lmp_lsto_capable(hdev)) | |
573 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
574 | ||
575 | if (lmp_ssp_capable(hdev)) { | |
576 | events[6] |= 0x01; /* IO Capability Request */ | |
577 | events[6] |= 0x02; /* IO Capability Response */ | |
578 | events[6] |= 0x04; /* User Confirmation Request */ | |
579 | events[6] |= 0x08; /* User Passkey Request */ | |
580 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
581 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
582 | events[7] |= 0x04; /* User Passkey Notification */ | |
583 | events[7] |= 0x08; /* Keypress Notification */ | |
584 | events[7] |= 0x10; /* Remote Host Supported | |
585 | * Features Notification | |
586 | */ | |
587 | } | |
588 | ||
589 | if (lmp_le_capable(hdev)) | |
590 | events[7] |= 0x20; /* LE Meta-Event */ | |
591 | ||
42c6b129 | 592 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
593 | } |
594 | ||
42c6b129 | 595 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 596 | { |
42c6b129 JH |
597 | struct hci_dev *hdev = req->hdev; |
598 | ||
0af801b9 JH |
599 | if (hdev->dev_type == HCI_AMP) |
600 | return amp_init2(req); | |
601 | ||
2177bab5 | 602 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 603 | bredr_setup(req); |
56f87901 | 604 | else |
a358dc11 | 605 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
606 | |
607 | if (lmp_le_capable(hdev)) | |
42c6b129 | 608 | le_setup(req); |
2177bab5 | 609 | |
0f3adeae MH |
610 | /* All Bluetooth 1.2 and later controllers should support the |
611 | * HCI command for reading the local supported commands. | |
612 | * | |
613 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
614 | * but do not have support for this command. If that is the case, | |
615 | * the driver can quirk the behavior and skip reading the local | |
616 | * supported commands. | |
3f8e2d75 | 617 | */ |
0f3adeae MH |
618 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
619 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 620 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
621 | |
622 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
623 | /* When SSP is available, then the host features page |
624 | * should also be available as well. However some | |
625 | * controllers list the max_page as 0 as long as SSP | |
626 | * has not been enabled. To achieve proper debugging | |
627 | * output, force the minimum max_page to 1 at least. | |
628 | */ | |
629 | hdev->max_page = 0x01; | |
630 | ||
d7a5a11d | 631 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 632 | u8 mode = 0x01; |
574ea3c7 | 633 | |
42c6b129 JH |
634 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
635 | sizeof(mode), &mode); | |
2177bab5 JH |
636 | } else { |
637 | struct hci_cp_write_eir cp; | |
638 | ||
639 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
640 | memset(&cp, 0, sizeof(cp)); | |
641 | ||
42c6b129 | 642 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
643 | } |
644 | } | |
645 | ||
043ec9bf MH |
646 | if (lmp_inq_rssi_capable(hdev) || |
647 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
648 | u8 mode; |
649 | ||
650 | /* If Extended Inquiry Result events are supported, then | |
651 | * they are clearly preferred over Inquiry Result with RSSI | |
652 | * events. | |
653 | */ | |
654 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
655 | ||
656 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
657 | } | |
2177bab5 JH |
658 | |
659 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 660 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
661 | |
662 | if (lmp_ext_feat_capable(hdev)) { | |
663 | struct hci_cp_read_local_ext_features cp; | |
664 | ||
665 | cp.page = 0x01; | |
42c6b129 JH |
666 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
667 | sizeof(cp), &cp); | |
2177bab5 JH |
668 | } |
669 | ||
d7a5a11d | 670 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 671 | u8 enable = 1; |
42c6b129 JH |
672 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
673 | &enable); | |
2177bab5 JH |
674 | } |
675 | } | |
676 | ||
42c6b129 | 677 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 678 | { |
42c6b129 | 679 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
680 | struct hci_cp_write_def_link_policy cp; |
681 | u16 link_policy = 0; | |
682 | ||
683 | if (lmp_rswitch_capable(hdev)) | |
684 | link_policy |= HCI_LP_RSWITCH; | |
685 | if (lmp_hold_capable(hdev)) | |
686 | link_policy |= HCI_LP_HOLD; | |
687 | if (lmp_sniff_capable(hdev)) | |
688 | link_policy |= HCI_LP_SNIFF; | |
689 | if (lmp_park_capable(hdev)) | |
690 | link_policy |= HCI_LP_PARK; | |
691 | ||
692 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 693 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
694 | } |
695 | ||
42c6b129 | 696 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 697 | { |
42c6b129 | 698 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
699 | struct hci_cp_write_le_host_supported cp; |
700 | ||
c73eee91 JH |
701 | /* LE-only devices do not support explicit enablement */ |
702 | if (!lmp_bredr_capable(hdev)) | |
703 | return; | |
704 | ||
2177bab5 JH |
705 | memset(&cp, 0, sizeof(cp)); |
706 | ||
d7a5a11d | 707 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 708 | cp.le = 0x01; |
32226e4f | 709 | cp.simul = 0x00; |
2177bab5 JH |
710 | } |
711 | ||
712 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
713 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
714 | &cp); | |
2177bab5 JH |
715 | } |
716 | ||
d62e6d67 JH |
717 | static void hci_set_event_mask_page_2(struct hci_request *req) |
718 | { | |
719 | struct hci_dev *hdev = req->hdev; | |
720 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
721 | ||
722 | /* If Connectionless Slave Broadcast master role is supported | |
723 | * enable all necessary events for it. | |
724 | */ | |
53b834d2 | 725 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
726 | events[1] |= 0x40; /* Triggered Clock Capture */ |
727 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
728 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
729 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
730 | } | |
731 | ||
732 | /* If Connectionless Slave Broadcast slave role is supported | |
733 | * enable all necessary events for it. | |
734 | */ | |
53b834d2 | 735 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
736 | events[2] |= 0x01; /* Synchronization Train Received */ |
737 | events[2] |= 0x02; /* CSB Receive */ | |
738 | events[2] |= 0x04; /* CSB Timeout */ | |
739 | events[2] |= 0x08; /* Truncated Page Complete */ | |
740 | } | |
741 | ||
40c59fcb | 742 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 743 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
744 | events[2] |= 0x80; |
745 | ||
d62e6d67 JH |
746 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
747 | } | |
748 | ||
42c6b129 | 749 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 750 | { |
42c6b129 | 751 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 752 | u8 p; |
42c6b129 | 753 | |
0da71f1b MH |
754 | hci_setup_event_mask(req); |
755 | ||
e81be90b JH |
756 | if (hdev->commands[6] & 0x20 && |
757 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
758 | struct hci_cp_read_stored_link_key cp; |
759 | ||
760 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
761 | cp.read_all = 0x01; | |
762 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
763 | } | |
764 | ||
2177bab5 | 765 | if (hdev->commands[5] & 0x10) |
42c6b129 | 766 | hci_setup_link_policy(req); |
2177bab5 | 767 | |
417287de MH |
768 | if (hdev->commands[8] & 0x01) |
769 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
770 | ||
771 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
772 | * support the Read Page Scan Type command. Check support for | |
773 | * this command in the bit mask of supported commands. | |
774 | */ | |
775 | if (hdev->commands[13] & 0x01) | |
776 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
777 | ||
9193c6e8 AG |
778 | if (lmp_le_capable(hdev)) { |
779 | u8 events[8]; | |
780 | ||
781 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
782 | events[0] = 0x0f; |
783 | ||
784 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
785 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
786 | |
787 | /* If controller supports the Connection Parameters Request | |
788 | * Link Layer Procedure, enable the corresponding event. | |
789 | */ | |
790 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
791 | events[0] |= 0x20; /* LE Remote Connection | |
792 | * Parameter Request | |
793 | */ | |
794 | ||
a9f6068e MH |
795 | /* If the controller supports the Data Length Extension |
796 | * feature, enable the corresponding event. | |
797 | */ | |
798 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
799 | events[0] |= 0x40; /* LE Data Length Change */ | |
800 | ||
4b71bba4 MH |
801 | /* If the controller supports Extended Scanner Filter |
802 | * Policies, enable the correspondig event. | |
803 | */ | |
804 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
805 | events[1] |= 0x04; /* LE Direct Advertising | |
806 | * Report | |
807 | */ | |
808 | ||
5a34bd5f MH |
809 | /* If the controller supports the LE Read Local P-256 |
810 | * Public Key command, enable the corresponding event. | |
811 | */ | |
812 | if (hdev->commands[34] & 0x02) | |
813 | events[0] |= 0x80; /* LE Read Local P-256 | |
814 | * Public Key Complete | |
815 | */ | |
816 | ||
817 | /* If the controller supports the LE Generate DHKey | |
818 | * command, enable the corresponding event. | |
819 | */ | |
820 | if (hdev->commands[34] & 0x04) | |
821 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
822 | ||
9193c6e8 AG |
823 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
824 | events); | |
825 | ||
15a49cca MH |
826 | if (hdev->commands[25] & 0x40) { |
827 | /* Read LE Advertising Channel TX Power */ | |
828 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
829 | } | |
830 | ||
a9f6068e MH |
831 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
832 | /* Read LE Maximum Data Length */ | |
833 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
834 | ||
835 | /* Read LE Suggested Default Data Length */ | |
836 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
837 | } | |
838 | ||
42c6b129 | 839 | hci_set_le_support(req); |
9193c6e8 | 840 | } |
d2c5d77f JH |
841 | |
842 | /* Read features beyond page 1 if available */ | |
843 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
844 | struct hci_cp_read_local_ext_features cp; | |
845 | ||
846 | cp.page = p; | |
847 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
848 | sizeof(cp), &cp); | |
849 | } | |
2177bab5 JH |
850 | } |
851 | ||
5d4e7e8d JH |
852 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
853 | { | |
854 | struct hci_dev *hdev = req->hdev; | |
855 | ||
36f260ce MH |
856 | /* Some Broadcom based Bluetooth controllers do not support the |
857 | * Delete Stored Link Key command. They are clearly indicating its | |
858 | * absence in the bit mask of supported commands. | |
859 | * | |
860 | * Check the supported commands and only if the the command is marked | |
861 | * as supported send it. If not supported assume that the controller | |
862 | * does not have actual support for stored link keys which makes this | |
863 | * command redundant anyway. | |
864 | * | |
865 | * Some controllers indicate that they support handling deleting | |
866 | * stored link keys, but they don't. The quirk lets a driver | |
867 | * just disable this command. | |
868 | */ | |
869 | if (hdev->commands[6] & 0x80 && | |
870 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
871 | struct hci_cp_delete_stored_link_key cp; | |
872 | ||
873 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
874 | cp.delete_all = 0x01; | |
875 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
876 | sizeof(cp), &cp); | |
877 | } | |
878 | ||
d62e6d67 JH |
879 | /* Set event mask page 2 if the HCI command for it is supported */ |
880 | if (hdev->commands[22] & 0x04) | |
881 | hci_set_event_mask_page_2(req); | |
882 | ||
109e3191 MH |
883 | /* Read local codec list if the HCI command is supported */ |
884 | if (hdev->commands[29] & 0x20) | |
885 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
886 | ||
f4fe73ed MH |
887 | /* Get MWS transport configuration if the HCI command is supported */ |
888 | if (hdev->commands[30] & 0x08) | |
889 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
890 | ||
5d4e7e8d | 891 | /* Check for Synchronization Train support */ |
53b834d2 | 892 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 893 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
894 | |
895 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 896 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 897 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 898 | u8 support = 0x01; |
574ea3c7 | 899 | |
a6d0d690 MH |
900 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
901 | sizeof(support), &support); | |
902 | } | |
5d4e7e8d JH |
903 | } |
904 | ||
2177bab5 JH |
905 | static int __hci_init(struct hci_dev *hdev) |
906 | { | |
907 | int err; | |
908 | ||
909 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
910 | if (err < 0) | |
911 | return err; | |
912 | ||
f640ee98 MH |
913 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
914 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 915 | |
0af801b9 JH |
916 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
917 | if (err < 0) | |
918 | return err; | |
919 | ||
2177bab5 JH |
920 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
921 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 922 | * first two stages of init. |
2177bab5 JH |
923 | */ |
924 | if (hdev->dev_type != HCI_BREDR) | |
925 | return 0; | |
926 | ||
5d4e7e8d JH |
927 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
928 | if (err < 0) | |
929 | return err; | |
930 | ||
baf27f6e MH |
931 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
932 | if (err < 0) | |
933 | return err; | |
934 | ||
ec6cef9c MH |
935 | /* This function is only called when the controller is actually in |
936 | * configured state. When the controller is marked as unconfigured, | |
937 | * this initialization procedure is not run. | |
938 | * | |
939 | * It means that it is possible that a controller runs through its | |
940 | * setup phase and then discovers missing settings. If that is the | |
941 | * case, then this function will not be called. It then will only | |
942 | * be called during the config phase. | |
943 | * | |
944 | * So only when in setup phase or config phase, create the debugfs | |
945 | * entries and register the SMP channels. | |
baf27f6e | 946 | */ |
d7a5a11d MH |
947 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
948 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
949 | return 0; |
950 | ||
60c5f5fb MH |
951 | hci_debugfs_create_common(hdev); |
952 | ||
71c3b60e | 953 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 954 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 955 | |
162a3bac | 956 | if (lmp_le_capable(hdev)) |
60c5f5fb | 957 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 958 | |
baf27f6e | 959 | return 0; |
2177bab5 JH |
960 | } |
961 | ||
0ebca7d6 MH |
962 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
963 | { | |
964 | struct hci_dev *hdev = req->hdev; | |
965 | ||
966 | BT_DBG("%s %ld", hdev->name, opt); | |
967 | ||
968 | /* Reset */ | |
969 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
970 | hci_reset_req(req, 0); | |
971 | ||
972 | /* Read Local Version */ | |
973 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
974 | ||
975 | /* Read BD Address */ | |
976 | if (hdev->set_bdaddr) | |
977 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
978 | } | |
979 | ||
980 | static int __hci_unconf_init(struct hci_dev *hdev) | |
981 | { | |
982 | int err; | |
983 | ||
cc78b44b MH |
984 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
985 | return 0; | |
986 | ||
0ebca7d6 MH |
987 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
988 | if (err < 0) | |
989 | return err; | |
990 | ||
f640ee98 MH |
991 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
992 | hci_debugfs_create_basic(hdev); | |
993 | ||
0ebca7d6 MH |
994 | return 0; |
995 | } | |
996 | ||
42c6b129 | 997 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
998 | { |
999 | __u8 scan = opt; | |
1000 | ||
42c6b129 | 1001 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1002 | |
1003 | /* Inquiry and Page scans */ | |
42c6b129 | 1004 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1005 | } |
1006 | ||
42c6b129 | 1007 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1008 | { |
1009 | __u8 auth = opt; | |
1010 | ||
42c6b129 | 1011 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1012 | |
1013 | /* Authentication */ | |
42c6b129 | 1014 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1015 | } |
1016 | ||
42c6b129 | 1017 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1018 | { |
1019 | __u8 encrypt = opt; | |
1020 | ||
42c6b129 | 1021 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1022 | |
e4e8e37c | 1023 | /* Encryption */ |
42c6b129 | 1024 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1025 | } |
1026 | ||
42c6b129 | 1027 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1028 | { |
1029 | __le16 policy = cpu_to_le16(opt); | |
1030 | ||
42c6b129 | 1031 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1032 | |
1033 | /* Default link policy */ | |
42c6b129 | 1034 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1035 | } |
1036 | ||
8e87d142 | 1037 | /* Get HCI device by index. |
1da177e4 LT |
1038 | * Device is held on return. */ |
1039 | struct hci_dev *hci_dev_get(int index) | |
1040 | { | |
8035ded4 | 1041 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1042 | |
1043 | BT_DBG("%d", index); | |
1044 | ||
1045 | if (index < 0) | |
1046 | return NULL; | |
1047 | ||
1048 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1049 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1050 | if (d->id == index) { |
1051 | hdev = hci_dev_hold(d); | |
1052 | break; | |
1053 | } | |
1054 | } | |
1055 | read_unlock(&hci_dev_list_lock); | |
1056 | return hdev; | |
1057 | } | |
1da177e4 LT |
1058 | |
1059 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1060 | |
30dc78e1 JH |
1061 | bool hci_discovery_active(struct hci_dev *hdev) |
1062 | { | |
1063 | struct discovery_state *discov = &hdev->discovery; | |
1064 | ||
6fbe195d | 1065 | switch (discov->state) { |
343f935b | 1066 | case DISCOVERY_FINDING: |
6fbe195d | 1067 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1068 | return true; |
1069 | ||
6fbe195d AG |
1070 | default: |
1071 | return false; | |
1072 | } | |
30dc78e1 JH |
1073 | } |
1074 | ||
ff9ef578 JH |
1075 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1076 | { | |
bb3e0a33 JH |
1077 | int old_state = hdev->discovery.state; |
1078 | ||
ff9ef578 JH |
1079 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1080 | ||
bb3e0a33 | 1081 | if (old_state == state) |
ff9ef578 JH |
1082 | return; |
1083 | ||
bb3e0a33 JH |
1084 | hdev->discovery.state = state; |
1085 | ||
ff9ef578 JH |
1086 | switch (state) { |
1087 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1088 | hci_update_background_scan(hdev); |
1089 | ||
bb3e0a33 | 1090 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1091 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1092 | break; |
1093 | case DISCOVERY_STARTING: | |
1094 | break; | |
343f935b | 1095 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1096 | mgmt_discovering(hdev, 1); |
1097 | break; | |
30dc78e1 JH |
1098 | case DISCOVERY_RESOLVING: |
1099 | break; | |
ff9ef578 JH |
1100 | case DISCOVERY_STOPPING: |
1101 | break; | |
1102 | } | |
ff9ef578 JH |
1103 | } |
1104 | ||
1f9b9a5d | 1105 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1106 | { |
30883512 | 1107 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1108 | struct inquiry_entry *p, *n; |
1da177e4 | 1109 | |
561aafbc JH |
1110 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1111 | list_del(&p->all); | |
b57c1a56 | 1112 | kfree(p); |
1da177e4 | 1113 | } |
561aafbc JH |
1114 | |
1115 | INIT_LIST_HEAD(&cache->unknown); | |
1116 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1117 | } |
1118 | ||
a8c5fb1a GP |
1119 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1120 | bdaddr_t *bdaddr) | |
1da177e4 | 1121 | { |
30883512 | 1122 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1123 | struct inquiry_entry *e; |
1124 | ||
6ed93dc6 | 1125 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1126 | |
561aafbc JH |
1127 | list_for_each_entry(e, &cache->all, all) { |
1128 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1129 | return e; | |
1130 | } | |
1131 | ||
1132 | return NULL; | |
1133 | } | |
1134 | ||
1135 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1136 | bdaddr_t *bdaddr) |
561aafbc | 1137 | { |
30883512 | 1138 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1139 | struct inquiry_entry *e; |
1140 | ||
6ed93dc6 | 1141 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1142 | |
1143 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1144 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1145 | return e; |
1146 | } | |
1147 | ||
1148 | return NULL; | |
1da177e4 LT |
1149 | } |
1150 | ||
30dc78e1 | 1151 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1152 | bdaddr_t *bdaddr, |
1153 | int state) | |
30dc78e1 JH |
1154 | { |
1155 | struct discovery_state *cache = &hdev->discovery; | |
1156 | struct inquiry_entry *e; | |
1157 | ||
6ed93dc6 | 1158 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1159 | |
1160 | list_for_each_entry(e, &cache->resolve, list) { | |
1161 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1162 | return e; | |
1163 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1164 | return e; | |
1165 | } | |
1166 | ||
1167 | return NULL; | |
1168 | } | |
1169 | ||
a3d4e20a | 1170 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1171 | struct inquiry_entry *ie) |
a3d4e20a JH |
1172 | { |
1173 | struct discovery_state *cache = &hdev->discovery; | |
1174 | struct list_head *pos = &cache->resolve; | |
1175 | struct inquiry_entry *p; | |
1176 | ||
1177 | list_del(&ie->list); | |
1178 | ||
1179 | list_for_each_entry(p, &cache->resolve, list) { | |
1180 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1181 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1182 | break; |
1183 | pos = &p->list; | |
1184 | } | |
1185 | ||
1186 | list_add(&ie->list, pos); | |
1187 | } | |
1188 | ||
af58925c MH |
1189 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1190 | bool name_known) | |
1da177e4 | 1191 | { |
30883512 | 1192 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1193 | struct inquiry_entry *ie; |
af58925c | 1194 | u32 flags = 0; |
1da177e4 | 1195 | |
6ed93dc6 | 1196 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1197 | |
6928a924 | 1198 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1199 | |
af58925c MH |
1200 | if (!data->ssp_mode) |
1201 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1202 | |
70f23020 | 1203 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1204 | if (ie) { |
af58925c MH |
1205 | if (!ie->data.ssp_mode) |
1206 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1207 | |
a3d4e20a | 1208 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1209 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1210 | ie->data.rssi = data->rssi; |
1211 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1212 | } | |
1213 | ||
561aafbc | 1214 | goto update; |
a3d4e20a | 1215 | } |
561aafbc JH |
1216 | |
1217 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1218 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1219 | if (!ie) { |
1220 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1221 | goto done; | |
1222 | } | |
561aafbc JH |
1223 | |
1224 | list_add(&ie->all, &cache->all); | |
1225 | ||
1226 | if (name_known) { | |
1227 | ie->name_state = NAME_KNOWN; | |
1228 | } else { | |
1229 | ie->name_state = NAME_NOT_KNOWN; | |
1230 | list_add(&ie->list, &cache->unknown); | |
1231 | } | |
70f23020 | 1232 | |
561aafbc JH |
1233 | update: |
1234 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1235 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1236 | ie->name_state = NAME_KNOWN; |
1237 | list_del(&ie->list); | |
1da177e4 LT |
1238 | } |
1239 | ||
70f23020 AE |
1240 | memcpy(&ie->data, data, sizeof(*data)); |
1241 | ie->timestamp = jiffies; | |
1da177e4 | 1242 | cache->timestamp = jiffies; |
3175405b JH |
1243 | |
1244 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1245 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1246 | |
af58925c MH |
1247 | done: |
1248 | return flags; | |
1da177e4 LT |
1249 | } |
1250 | ||
1251 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1252 | { | |
30883512 | 1253 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1254 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1255 | struct inquiry_entry *e; | |
1256 | int copied = 0; | |
1257 | ||
561aafbc | 1258 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1259 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1260 | |
1261 | if (copied >= num) | |
1262 | break; | |
1263 | ||
1da177e4 LT |
1264 | bacpy(&info->bdaddr, &data->bdaddr); |
1265 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1266 | info->pscan_period_mode = data->pscan_period_mode; | |
1267 | info->pscan_mode = data->pscan_mode; | |
1268 | memcpy(info->dev_class, data->dev_class, 3); | |
1269 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1270 | |
1da177e4 | 1271 | info++; |
b57c1a56 | 1272 | copied++; |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | BT_DBG("cache %p, copied %d", cache, copied); | |
1276 | return copied; | |
1277 | } | |
1278 | ||
42c6b129 | 1279 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1280 | { |
1281 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1282 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1283 | struct hci_cp_inquiry cp; |
1284 | ||
1285 | BT_DBG("%s", hdev->name); | |
1286 | ||
1287 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1288 | return; | |
1289 | ||
1290 | /* Start Inquiry */ | |
1291 | memcpy(&cp.lap, &ir->lap, 3); | |
1292 | cp.length = ir->length; | |
1293 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1294 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1295 | } |
1296 | ||
1297 | int hci_inquiry(void __user *arg) | |
1298 | { | |
1299 | __u8 __user *ptr = arg; | |
1300 | struct hci_inquiry_req ir; | |
1301 | struct hci_dev *hdev; | |
1302 | int err = 0, do_inquiry = 0, max_rsp; | |
1303 | long timeo; | |
1304 | __u8 *buf; | |
1305 | ||
1306 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1307 | return -EFAULT; | |
1308 | ||
5a08ecce AE |
1309 | hdev = hci_dev_get(ir.dev_id); |
1310 | if (!hdev) | |
1da177e4 LT |
1311 | return -ENODEV; |
1312 | ||
d7a5a11d | 1313 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1314 | err = -EBUSY; |
1315 | goto done; | |
1316 | } | |
1317 | ||
d7a5a11d | 1318 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1319 | err = -EOPNOTSUPP; |
1320 | goto done; | |
1321 | } | |
1322 | ||
5b69bef5 MH |
1323 | if (hdev->dev_type != HCI_BREDR) { |
1324 | err = -EOPNOTSUPP; | |
1325 | goto done; | |
1326 | } | |
1327 | ||
d7a5a11d | 1328 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1329 | err = -EOPNOTSUPP; |
1330 | goto done; | |
1331 | } | |
1332 | ||
09fd0de5 | 1333 | hci_dev_lock(hdev); |
8e87d142 | 1334 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1335 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1336 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1337 | do_inquiry = 1; |
1338 | } | |
09fd0de5 | 1339 | hci_dev_unlock(hdev); |
1da177e4 | 1340 | |
04837f64 | 1341 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1342 | |
1343 | if (do_inquiry) { | |
01178cd4 JH |
1344 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1345 | timeo); | |
70f23020 AE |
1346 | if (err < 0) |
1347 | goto done; | |
3e13fa1e AG |
1348 | |
1349 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1350 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1351 | */ | |
74316201 | 1352 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1353 | TASK_INTERRUPTIBLE)) |
1354 | return -EINTR; | |
70f23020 | 1355 | } |
1da177e4 | 1356 | |
8fc9ced3 GP |
1357 | /* for unlimited number of responses we will use buffer with |
1358 | * 255 entries | |
1359 | */ | |
1da177e4 LT |
1360 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1361 | ||
1362 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1363 | * copy it to the user space. | |
1364 | */ | |
01df8c31 | 1365 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1366 | if (!buf) { |
1da177e4 LT |
1367 | err = -ENOMEM; |
1368 | goto done; | |
1369 | } | |
1370 | ||
09fd0de5 | 1371 | hci_dev_lock(hdev); |
1da177e4 | 1372 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1373 | hci_dev_unlock(hdev); |
1da177e4 LT |
1374 | |
1375 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1376 | ||
1377 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1378 | ptr += sizeof(ir); | |
1379 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1380 | ir.num_rsp)) |
1da177e4 | 1381 | err = -EFAULT; |
8e87d142 | 1382 | } else |
1da177e4 LT |
1383 | err = -EFAULT; |
1384 | ||
1385 | kfree(buf); | |
1386 | ||
1387 | done: | |
1388 | hci_dev_put(hdev); | |
1389 | return err; | |
1390 | } | |
1391 | ||
cbed0ca1 | 1392 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1393 | { |
1da177e4 LT |
1394 | int ret = 0; |
1395 | ||
1da177e4 LT |
1396 | BT_DBG("%s %p", hdev->name, hdev); |
1397 | ||
1398 | hci_req_lock(hdev); | |
1399 | ||
d7a5a11d | 1400 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1401 | ret = -ENODEV; |
1402 | goto done; | |
1403 | } | |
1404 | ||
d7a5a11d MH |
1405 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1406 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1407 | /* Check for rfkill but allow the HCI setup stage to |
1408 | * proceed (which in itself doesn't cause any RF activity). | |
1409 | */ | |
d7a5a11d | 1410 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1411 | ret = -ERFKILL; |
1412 | goto done; | |
1413 | } | |
1414 | ||
1415 | /* Check for valid public address or a configured static | |
1416 | * random adddress, but let the HCI setup proceed to | |
1417 | * be able to determine if there is a public address | |
1418 | * or not. | |
1419 | * | |
c6beca0e MH |
1420 | * In case of user channel usage, it is not important |
1421 | * if a public address or static random address is | |
1422 | * available. | |
1423 | * | |
a5c8f270 MH |
1424 | * This check is only valid for BR/EDR controllers |
1425 | * since AMP controllers do not have an address. | |
1426 | */ | |
d7a5a11d | 1427 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1428 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1429 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1430 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1431 | ret = -EADDRNOTAVAIL; | |
1432 | goto done; | |
1433 | } | |
611b30f7 MH |
1434 | } |
1435 | ||
1da177e4 LT |
1436 | if (test_bit(HCI_UP, &hdev->flags)) { |
1437 | ret = -EALREADY; | |
1438 | goto done; | |
1439 | } | |
1440 | ||
1da177e4 LT |
1441 | if (hdev->open(hdev)) { |
1442 | ret = -EIO; | |
1443 | goto done; | |
1444 | } | |
1445 | ||
e9ca8bf1 | 1446 | set_bit(HCI_RUNNING, &hdev->flags); |
4a3f95b7 MH |
1447 | hci_notify(hdev, HCI_DEV_OPEN); |
1448 | ||
f41c70c4 MH |
1449 | atomic_set(&hdev->cmd_cnt, 1); |
1450 | set_bit(HCI_INIT, &hdev->flags); | |
1451 | ||
d7a5a11d | 1452 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
af202f84 MH |
1453 | if (hdev->setup) |
1454 | ret = hdev->setup(hdev); | |
f41c70c4 | 1455 | |
af202f84 MH |
1456 | /* The transport driver can set these quirks before |
1457 | * creating the HCI device or in its setup callback. | |
1458 | * | |
1459 | * In case any of them is set, the controller has to | |
1460 | * start up as unconfigured. | |
1461 | */ | |
eb1904f4 MH |
1462 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1463 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1464 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1465 | |
0ebca7d6 MH |
1466 | /* For an unconfigured controller it is required to |
1467 | * read at least the version information provided by | |
1468 | * the Read Local Version Information command. | |
1469 | * | |
1470 | * If the set_bdaddr driver callback is provided, then | |
1471 | * also the original Bluetooth public device address | |
1472 | * will be read using the Read BD Address command. | |
1473 | */ | |
d7a5a11d | 1474 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1475 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1476 | } |
1477 | ||
d7a5a11d | 1478 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1479 | /* If public address change is configured, ensure that |
1480 | * the address gets programmed. If the driver does not | |
1481 | * support changing the public address, fail the power | |
1482 | * on procedure. | |
1483 | */ | |
1484 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1485 | hdev->set_bdaddr) | |
24c457e2 MH |
1486 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1487 | else | |
1488 | ret = -EADDRNOTAVAIL; | |
1489 | } | |
1490 | ||
f41c70c4 | 1491 | if (!ret) { |
d7a5a11d MH |
1492 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1493 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
f41c70c4 | 1494 | ret = __hci_init(hdev); |
1da177e4 LT |
1495 | } |
1496 | ||
f41c70c4 MH |
1497 | clear_bit(HCI_INIT, &hdev->flags); |
1498 | ||
1da177e4 LT |
1499 | if (!ret) { |
1500 | hci_dev_hold(hdev); | |
a1536da2 | 1501 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 LT |
1502 | set_bit(HCI_UP, &hdev->flags); |
1503 | hci_notify(hdev, HCI_DEV_UP); | |
d7a5a11d MH |
1504 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1505 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1506 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1507 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1514b892 | 1508 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1509 | hci_dev_lock(hdev); |
744cf19e | 1510 | mgmt_powered(hdev, 1); |
09fd0de5 | 1511 | hci_dev_unlock(hdev); |
56e5cb86 | 1512 | } |
8e87d142 | 1513 | } else { |
1da177e4 | 1514 | /* Init failed, cleanup */ |
3eff45ea | 1515 | flush_work(&hdev->tx_work); |
c347b765 | 1516 | flush_work(&hdev->cmd_work); |
b78752cc | 1517 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1518 | |
1519 | skb_queue_purge(&hdev->cmd_q); | |
1520 | skb_queue_purge(&hdev->rx_q); | |
1521 | ||
1522 | if (hdev->flush) | |
1523 | hdev->flush(hdev); | |
1524 | ||
1525 | if (hdev->sent_cmd) { | |
1526 | kfree_skb(hdev->sent_cmd); | |
1527 | hdev->sent_cmd = NULL; | |
1528 | } | |
1529 | ||
e9ca8bf1 | 1530 | clear_bit(HCI_RUNNING, &hdev->flags); |
4a3f95b7 MH |
1531 | hci_notify(hdev, HCI_DEV_CLOSE); |
1532 | ||
1da177e4 | 1533 | hdev->close(hdev); |
fee746b0 | 1534 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1535 | } |
1536 | ||
1537 | done: | |
1538 | hci_req_unlock(hdev); | |
1da177e4 LT |
1539 | return ret; |
1540 | } | |
1541 | ||
cbed0ca1 JH |
1542 | /* ---- HCI ioctl helpers ---- */ |
1543 | ||
1544 | int hci_dev_open(__u16 dev) | |
1545 | { | |
1546 | struct hci_dev *hdev; | |
1547 | int err; | |
1548 | ||
1549 | hdev = hci_dev_get(dev); | |
1550 | if (!hdev) | |
1551 | return -ENODEV; | |
1552 | ||
4a964404 | 1553 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1554 | * up as user channel. Trying to bring them up as normal devices |
1555 | * will result into a failure. Only user channel operation is | |
1556 | * possible. | |
1557 | * | |
1558 | * When this function is called for a user channel, the flag | |
1559 | * HCI_USER_CHANNEL will be set first before attempting to | |
1560 | * open the device. | |
1561 | */ | |
d7a5a11d MH |
1562 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1563 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1564 | err = -EOPNOTSUPP; |
1565 | goto done; | |
1566 | } | |
1567 | ||
e1d08f40 JH |
1568 | /* We need to ensure that no other power on/off work is pending |
1569 | * before proceeding to call hci_dev_do_open. This is | |
1570 | * particularly important if the setup procedure has not yet | |
1571 | * completed. | |
1572 | */ | |
a69d8927 | 1573 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1574 | cancel_delayed_work(&hdev->power_off); |
1575 | ||
a5c8f270 MH |
1576 | /* After this call it is guaranteed that the setup procedure |
1577 | * has finished. This means that error conditions like RFKILL | |
1578 | * or no valid public or static random address apply. | |
1579 | */ | |
e1d08f40 JH |
1580 | flush_workqueue(hdev->req_workqueue); |
1581 | ||
12aa4f0a | 1582 | /* For controllers not using the management interface and that |
b6ae8457 | 1583 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1584 | * so that pairing works for them. Once the management interface |
1585 | * is in use this bit will be cleared again and userspace has | |
1586 | * to explicitly enable it. | |
1587 | */ | |
d7a5a11d MH |
1588 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1589 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1590 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1591 | |
cbed0ca1 JH |
1592 | err = hci_dev_do_open(hdev); |
1593 | ||
fee746b0 | 1594 | done: |
cbed0ca1 | 1595 | hci_dev_put(hdev); |
cbed0ca1 JH |
1596 | return err; |
1597 | } | |
1598 | ||
d7347f3c JH |
1599 | /* This function requires the caller holds hdev->lock */ |
1600 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1601 | { | |
1602 | struct hci_conn_params *p; | |
1603 | ||
f161dd41 JH |
1604 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1605 | if (p->conn) { | |
1606 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1607 | hci_conn_put(p->conn); |
f161dd41 JH |
1608 | p->conn = NULL; |
1609 | } | |
d7347f3c | 1610 | list_del_init(&p->action); |
f161dd41 | 1611 | } |
d7347f3c JH |
1612 | |
1613 | BT_DBG("All LE pending actions cleared"); | |
1614 | } | |
1615 | ||
6b3cc1db | 1616 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1617 | { |
acc649c6 MH |
1618 | bool auto_off; |
1619 | ||
1da177e4 LT |
1620 | BT_DBG("%s %p", hdev->name, hdev); |
1621 | ||
d24d8144 | 1622 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1623 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1624 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1625 | /* Execute vendor specific shutdown routine */ |
1626 | if (hdev->shutdown) | |
1627 | hdev->shutdown(hdev); | |
1628 | } | |
1629 | ||
78c04c0b VCG |
1630 | cancel_delayed_work(&hdev->power_off); |
1631 | ||
1da177e4 LT |
1632 | hci_req_cancel(hdev, ENODEV); |
1633 | hci_req_lock(hdev); | |
1634 | ||
1635 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1636 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1637 | hci_req_unlock(hdev); |
1638 | return 0; | |
1639 | } | |
1640 | ||
3eff45ea GP |
1641 | /* Flush RX and TX works */ |
1642 | flush_work(&hdev->tx_work); | |
b78752cc | 1643 | flush_work(&hdev->rx_work); |
1da177e4 | 1644 | |
16ab91ab | 1645 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1646 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1647 | hdev->discov_timeout = 0; |
a358dc11 MH |
1648 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1649 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1650 | } |
1651 | ||
a69d8927 | 1652 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1653 | cancel_delayed_work(&hdev->service_cache); |
1654 | ||
7ba8b4be | 1655 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2d28cfe7 | 1656 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
4518bb0f | 1657 | |
d7a5a11d | 1658 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1659 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1660 | |
5d900e46 FG |
1661 | if (hdev->adv_instance_timeout) { |
1662 | cancel_delayed_work_sync(&hdev->adv_instance_expire); | |
1663 | hdev->adv_instance_timeout = 0; | |
1664 | } | |
1665 | ||
76727c02 JH |
1666 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1667 | * ensuring the workqueue is empty up front. | |
1668 | */ | |
1669 | drain_workqueue(hdev->workqueue); | |
1670 | ||
09fd0de5 | 1671 | hci_dev_lock(hdev); |
1aeb9c65 | 1672 | |
8f502f84 JH |
1673 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1674 | ||
acc649c6 MH |
1675 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1676 | ||
1677 | if (!auto_off && hdev->dev_type == HCI_BREDR) | |
1678 | mgmt_powered(hdev, 0); | |
1aeb9c65 | 1679 | |
1f9b9a5d | 1680 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1681 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1682 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1683 | hci_dev_unlock(hdev); |
1da177e4 | 1684 | |
64dae967 MH |
1685 | smp_unregister(hdev); |
1686 | ||
1da177e4 LT |
1687 | hci_notify(hdev, HCI_DEV_DOWN); |
1688 | ||
1689 | if (hdev->flush) | |
1690 | hdev->flush(hdev); | |
1691 | ||
1692 | /* Reset device */ | |
1693 | skb_queue_purge(&hdev->cmd_q); | |
1694 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1695 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1696 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1697 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1698 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1699 | clear_bit(HCI_INIT, &hdev->flags); |
1700 | } | |
1701 | ||
c347b765 GP |
1702 | /* flush cmd work */ |
1703 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1704 | |
1705 | /* Drop queues */ | |
1706 | skb_queue_purge(&hdev->rx_q); | |
1707 | skb_queue_purge(&hdev->cmd_q); | |
1708 | skb_queue_purge(&hdev->raw_q); | |
1709 | ||
1710 | /* Drop last sent command */ | |
1711 | if (hdev->sent_cmd) { | |
65cc2b49 | 1712 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1713 | kfree_skb(hdev->sent_cmd); |
1714 | hdev->sent_cmd = NULL; | |
1715 | } | |
1716 | ||
e9ca8bf1 | 1717 | clear_bit(HCI_RUNNING, &hdev->flags); |
4a3f95b7 MH |
1718 | hci_notify(hdev, HCI_DEV_CLOSE); |
1719 | ||
1da177e4 LT |
1720 | /* After this point our queues are empty |
1721 | * and no tasks are scheduled. */ | |
1722 | hdev->close(hdev); | |
1723 | ||
35b973c9 | 1724 | /* Clear flags */ |
fee746b0 | 1725 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1726 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1727 | |
ced5c338 | 1728 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1729 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1730 | |
e59fda8d | 1731 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1732 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1733 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1734 | |
1da177e4 LT |
1735 | hci_req_unlock(hdev); |
1736 | ||
1737 | hci_dev_put(hdev); | |
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | int hci_dev_close(__u16 dev) | |
1742 | { | |
1743 | struct hci_dev *hdev; | |
1744 | int err; | |
1745 | ||
70f23020 AE |
1746 | hdev = hci_dev_get(dev); |
1747 | if (!hdev) | |
1da177e4 | 1748 | return -ENODEV; |
8ee56540 | 1749 | |
d7a5a11d | 1750 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1751 | err = -EBUSY; |
1752 | goto done; | |
1753 | } | |
1754 | ||
a69d8927 | 1755 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1756 | cancel_delayed_work(&hdev->power_off); |
1757 | ||
1da177e4 | 1758 | err = hci_dev_do_close(hdev); |
8ee56540 | 1759 | |
0736cfa8 | 1760 | done: |
1da177e4 LT |
1761 | hci_dev_put(hdev); |
1762 | return err; | |
1763 | } | |
1764 | ||
5c912495 | 1765 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1766 | { |
5c912495 | 1767 | int ret; |
1da177e4 | 1768 | |
5c912495 | 1769 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1770 | |
1771 | hci_req_lock(hdev); | |
1da177e4 | 1772 | |
1da177e4 LT |
1773 | /* Drop queues */ |
1774 | skb_queue_purge(&hdev->rx_q); | |
1775 | skb_queue_purge(&hdev->cmd_q); | |
1776 | ||
76727c02 JH |
1777 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1778 | * ensuring the workqueue is empty up front. | |
1779 | */ | |
1780 | drain_workqueue(hdev->workqueue); | |
1781 | ||
09fd0de5 | 1782 | hci_dev_lock(hdev); |
1f9b9a5d | 1783 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1784 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1785 | hci_dev_unlock(hdev); |
1da177e4 LT |
1786 | |
1787 | if (hdev->flush) | |
1788 | hdev->flush(hdev); | |
1789 | ||
8e87d142 | 1790 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1791 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1792 | |
fee746b0 | 1793 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1794 | |
1da177e4 | 1795 | hci_req_unlock(hdev); |
1da177e4 LT |
1796 | return ret; |
1797 | } | |
1798 | ||
5c912495 MH |
1799 | int hci_dev_reset(__u16 dev) |
1800 | { | |
1801 | struct hci_dev *hdev; | |
1802 | int err; | |
1803 | ||
1804 | hdev = hci_dev_get(dev); | |
1805 | if (!hdev) | |
1806 | return -ENODEV; | |
1807 | ||
1808 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1809 | err = -ENETDOWN; | |
1810 | goto done; | |
1811 | } | |
1812 | ||
d7a5a11d | 1813 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1814 | err = -EBUSY; |
1815 | goto done; | |
1816 | } | |
1817 | ||
d7a5a11d | 1818 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1819 | err = -EOPNOTSUPP; |
1820 | goto done; | |
1821 | } | |
1822 | ||
1823 | err = hci_dev_do_reset(hdev); | |
1824 | ||
1825 | done: | |
1826 | hci_dev_put(hdev); | |
1827 | return err; | |
1828 | } | |
1829 | ||
1da177e4 LT |
1830 | int hci_dev_reset_stat(__u16 dev) |
1831 | { | |
1832 | struct hci_dev *hdev; | |
1833 | int ret = 0; | |
1834 | ||
70f23020 AE |
1835 | hdev = hci_dev_get(dev); |
1836 | if (!hdev) | |
1da177e4 LT |
1837 | return -ENODEV; |
1838 | ||
d7a5a11d | 1839 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1840 | ret = -EBUSY; |
1841 | goto done; | |
1842 | } | |
1843 | ||
d7a5a11d | 1844 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1845 | ret = -EOPNOTSUPP; |
1846 | goto done; | |
1847 | } | |
1848 | ||
1da177e4 LT |
1849 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1850 | ||
0736cfa8 | 1851 | done: |
1da177e4 | 1852 | hci_dev_put(hdev); |
1da177e4 LT |
1853 | return ret; |
1854 | } | |
1855 | ||
123abc08 JH |
1856 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1857 | { | |
bc6d2d04 | 1858 | bool conn_changed, discov_changed; |
123abc08 JH |
1859 | |
1860 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1861 | ||
1862 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1863 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1864 | HCI_CONNECTABLE); | |
123abc08 | 1865 | else |
a69d8927 MH |
1866 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1867 | HCI_CONNECTABLE); | |
123abc08 | 1868 | |
bc6d2d04 | 1869 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1870 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1871 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1872 | } else { |
a358dc11 | 1873 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1874 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1875 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1876 | } |
1877 | ||
d7a5a11d | 1878 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1879 | return; |
1880 | ||
bc6d2d04 JH |
1881 | if (conn_changed || discov_changed) { |
1882 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1883 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1884 | |
d7a5a11d | 1885 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
bc6d2d04 JH |
1886 | mgmt_update_adv_data(hdev); |
1887 | ||
123abc08 | 1888 | mgmt_new_settings(hdev); |
bc6d2d04 | 1889 | } |
123abc08 JH |
1890 | } |
1891 | ||
1da177e4 LT |
1892 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1893 | { | |
1894 | struct hci_dev *hdev; | |
1895 | struct hci_dev_req dr; | |
1896 | int err = 0; | |
1897 | ||
1898 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1899 | return -EFAULT; | |
1900 | ||
70f23020 AE |
1901 | hdev = hci_dev_get(dr.dev_id); |
1902 | if (!hdev) | |
1da177e4 LT |
1903 | return -ENODEV; |
1904 | ||
d7a5a11d | 1905 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1906 | err = -EBUSY; |
1907 | goto done; | |
1908 | } | |
1909 | ||
d7a5a11d | 1910 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1911 | err = -EOPNOTSUPP; |
1912 | goto done; | |
1913 | } | |
1914 | ||
5b69bef5 MH |
1915 | if (hdev->dev_type != HCI_BREDR) { |
1916 | err = -EOPNOTSUPP; | |
1917 | goto done; | |
1918 | } | |
1919 | ||
d7a5a11d | 1920 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1921 | err = -EOPNOTSUPP; |
1922 | goto done; | |
1923 | } | |
1924 | ||
1da177e4 LT |
1925 | switch (cmd) { |
1926 | case HCISETAUTH: | |
01178cd4 JH |
1927 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1928 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1929 | break; |
1930 | ||
1931 | case HCISETENCRYPT: | |
1932 | if (!lmp_encrypt_capable(hdev)) { | |
1933 | err = -EOPNOTSUPP; | |
1934 | break; | |
1935 | } | |
1936 | ||
1937 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1938 | /* Auth must be enabled first */ | |
01178cd4 JH |
1939 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1940 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1941 | if (err) |
1942 | break; | |
1943 | } | |
1944 | ||
01178cd4 JH |
1945 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1946 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1947 | break; |
1948 | ||
1949 | case HCISETSCAN: | |
01178cd4 JH |
1950 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1951 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1952 | |
bc6d2d04 JH |
1953 | /* Ensure that the connectable and discoverable states |
1954 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1955 | */ |
123abc08 JH |
1956 | if (!err) |
1957 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1958 | break; |
1959 | ||
1da177e4 | 1960 | case HCISETLINKPOL: |
01178cd4 JH |
1961 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1962 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1963 | break; |
1964 | ||
1965 | case HCISETLINKMODE: | |
e4e8e37c MH |
1966 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1967 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1968 | break; | |
1969 | ||
1970 | case HCISETPTYPE: | |
1971 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1972 | break; |
1973 | ||
1974 | case HCISETACLMTU: | |
e4e8e37c MH |
1975 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1976 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1977 | break; |
1978 | ||
1979 | case HCISETSCOMTU: | |
e4e8e37c MH |
1980 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1981 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1982 | break; |
1983 | ||
1984 | default: | |
1985 | err = -EINVAL; | |
1986 | break; | |
1987 | } | |
e4e8e37c | 1988 | |
0736cfa8 | 1989 | done: |
1da177e4 LT |
1990 | hci_dev_put(hdev); |
1991 | return err; | |
1992 | } | |
1993 | ||
1994 | int hci_get_dev_list(void __user *arg) | |
1995 | { | |
8035ded4 | 1996 | struct hci_dev *hdev; |
1da177e4 LT |
1997 | struct hci_dev_list_req *dl; |
1998 | struct hci_dev_req *dr; | |
1da177e4 LT |
1999 | int n = 0, size, err; |
2000 | __u16 dev_num; | |
2001 | ||
2002 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2003 | return -EFAULT; | |
2004 | ||
2005 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2006 | return -EINVAL; | |
2007 | ||
2008 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2009 | ||
70f23020 AE |
2010 | dl = kzalloc(size, GFP_KERNEL); |
2011 | if (!dl) | |
1da177e4 LT |
2012 | return -ENOMEM; |
2013 | ||
2014 | dr = dl->dev_req; | |
2015 | ||
f20d09d5 | 2016 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2017 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 2018 | unsigned long flags = hdev->flags; |
c542a06c | 2019 | |
2e84d8db MH |
2020 | /* When the auto-off is configured it means the transport |
2021 | * is running, but in that case still indicate that the | |
2022 | * device is actually down. | |
2023 | */ | |
d7a5a11d | 2024 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 2025 | flags &= ~BIT(HCI_UP); |
c542a06c | 2026 | |
1da177e4 | 2027 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2028 | (dr + n)->dev_opt = flags; |
c542a06c | 2029 | |
1da177e4 LT |
2030 | if (++n >= dev_num) |
2031 | break; | |
2032 | } | |
f20d09d5 | 2033 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2034 | |
2035 | dl->dev_num = n; | |
2036 | size = sizeof(*dl) + n * sizeof(*dr); | |
2037 | ||
2038 | err = copy_to_user(arg, dl, size); | |
2039 | kfree(dl); | |
2040 | ||
2041 | return err ? -EFAULT : 0; | |
2042 | } | |
2043 | ||
2044 | int hci_get_dev_info(void __user *arg) | |
2045 | { | |
2046 | struct hci_dev *hdev; | |
2047 | struct hci_dev_info di; | |
2e84d8db | 2048 | unsigned long flags; |
1da177e4 LT |
2049 | int err = 0; |
2050 | ||
2051 | if (copy_from_user(&di, arg, sizeof(di))) | |
2052 | return -EFAULT; | |
2053 | ||
70f23020 AE |
2054 | hdev = hci_dev_get(di.dev_id); |
2055 | if (!hdev) | |
1da177e4 LT |
2056 | return -ENODEV; |
2057 | ||
2e84d8db MH |
2058 | /* When the auto-off is configured it means the transport |
2059 | * is running, but in that case still indicate that the | |
2060 | * device is actually down. | |
2061 | */ | |
d7a5a11d | 2062 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
2063 | flags = hdev->flags & ~BIT(HCI_UP); |
2064 | else | |
2065 | flags = hdev->flags; | |
c542a06c | 2066 | |
1da177e4 LT |
2067 | strcpy(di.name, hdev->name); |
2068 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2069 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2070 | di.flags = flags; |
1da177e4 | 2071 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2072 | if (lmp_bredr_capable(hdev)) { |
2073 | di.acl_mtu = hdev->acl_mtu; | |
2074 | di.acl_pkts = hdev->acl_pkts; | |
2075 | di.sco_mtu = hdev->sco_mtu; | |
2076 | di.sco_pkts = hdev->sco_pkts; | |
2077 | } else { | |
2078 | di.acl_mtu = hdev->le_mtu; | |
2079 | di.acl_pkts = hdev->le_pkts; | |
2080 | di.sco_mtu = 0; | |
2081 | di.sco_pkts = 0; | |
2082 | } | |
1da177e4 LT |
2083 | di.link_policy = hdev->link_policy; |
2084 | di.link_mode = hdev->link_mode; | |
2085 | ||
2086 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2087 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2088 | ||
2089 | if (copy_to_user(arg, &di, sizeof(di))) | |
2090 | err = -EFAULT; | |
2091 | ||
2092 | hci_dev_put(hdev); | |
2093 | ||
2094 | return err; | |
2095 | } | |
2096 | ||
2097 | /* ---- Interface to HCI drivers ---- */ | |
2098 | ||
611b30f7 MH |
2099 | static int hci_rfkill_set_block(void *data, bool blocked) |
2100 | { | |
2101 | struct hci_dev *hdev = data; | |
2102 | ||
2103 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2104 | ||
d7a5a11d | 2105 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2106 | return -EBUSY; |
2107 | ||
5e130367 | 2108 | if (blocked) { |
a1536da2 | 2109 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2110 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2111 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2112 | hci_dev_do_close(hdev); |
5e130367 | 2113 | } else { |
a358dc11 | 2114 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2115 | } |
611b30f7 MH |
2116 | |
2117 | return 0; | |
2118 | } | |
2119 | ||
2120 | static const struct rfkill_ops hci_rfkill_ops = { | |
2121 | .set_block = hci_rfkill_set_block, | |
2122 | }; | |
2123 | ||
ab81cbf9 JH |
2124 | static void hci_power_on(struct work_struct *work) |
2125 | { | |
2126 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2127 | int err; |
ab81cbf9 JH |
2128 | |
2129 | BT_DBG("%s", hdev->name); | |
2130 | ||
cbed0ca1 | 2131 | err = hci_dev_do_open(hdev); |
96570ffc | 2132 | if (err < 0) { |
3ad67582 | 2133 | hci_dev_lock(hdev); |
96570ffc | 2134 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2135 | hci_dev_unlock(hdev); |
ab81cbf9 | 2136 | return; |
96570ffc | 2137 | } |
ab81cbf9 | 2138 | |
a5c8f270 MH |
2139 | /* During the HCI setup phase, a few error conditions are |
2140 | * ignored and they need to be checked now. If they are still | |
2141 | * valid, it is important to turn the device back off. | |
2142 | */ | |
d7a5a11d MH |
2143 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2144 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2145 | (hdev->dev_type == HCI_BREDR && |
2146 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2147 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2148 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2149 | hci_dev_do_close(hdev); |
d7a5a11d | 2150 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2151 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2152 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2153 | } |
ab81cbf9 | 2154 | |
a69d8927 | 2155 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2156 | /* For unconfigured devices, set the HCI_RAW flag |
2157 | * so that userspace can easily identify them. | |
4a964404 | 2158 | */ |
d7a5a11d | 2159 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2160 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2161 | |
2162 | /* For fully configured devices, this will send | |
2163 | * the Index Added event. For unconfigured devices, | |
2164 | * it will send Unconfigued Index Added event. | |
2165 | * | |
2166 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2167 | * and no event will be send. | |
2168 | */ | |
2169 | mgmt_index_added(hdev); | |
a69d8927 | 2170 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2171 | /* When the controller is now configured, then it |
2172 | * is important to clear the HCI_RAW flag. | |
2173 | */ | |
d7a5a11d | 2174 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2175 | clear_bit(HCI_RAW, &hdev->flags); |
2176 | ||
d603b76b MH |
2177 | /* Powering on the controller with HCI_CONFIG set only |
2178 | * happens with the transition from unconfigured to | |
2179 | * configured. This will send the Index Added event. | |
2180 | */ | |
744cf19e | 2181 | mgmt_index_added(hdev); |
fee746b0 | 2182 | } |
ab81cbf9 JH |
2183 | } |
2184 | ||
2185 | static void hci_power_off(struct work_struct *work) | |
2186 | { | |
3243553f | 2187 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2188 | power_off.work); |
ab81cbf9 JH |
2189 | |
2190 | BT_DBG("%s", hdev->name); | |
2191 | ||
8ee56540 | 2192 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2193 | } |
2194 | ||
c7741d16 MH |
2195 | static void hci_error_reset(struct work_struct *work) |
2196 | { | |
2197 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2198 | ||
2199 | BT_DBG("%s", hdev->name); | |
2200 | ||
2201 | if (hdev->hw_error) | |
2202 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2203 | else | |
2204 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2205 | hdev->hw_error_code); | |
2206 | ||
2207 | if (hci_dev_do_close(hdev)) | |
2208 | return; | |
2209 | ||
c7741d16 MH |
2210 | hci_dev_do_open(hdev); |
2211 | } | |
2212 | ||
16ab91ab JH |
2213 | static void hci_discov_off(struct work_struct *work) |
2214 | { | |
2215 | struct hci_dev *hdev; | |
16ab91ab JH |
2216 | |
2217 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2218 | ||
2219 | BT_DBG("%s", hdev->name); | |
2220 | ||
d1967ff8 | 2221 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2222 | } |
2223 | ||
5d900e46 FG |
2224 | static void hci_adv_timeout_expire(struct work_struct *work) |
2225 | { | |
2226 | struct hci_dev *hdev; | |
2227 | ||
2228 | hdev = container_of(work, struct hci_dev, adv_instance_expire.work); | |
2229 | ||
2230 | BT_DBG("%s", hdev->name); | |
2231 | ||
2232 | mgmt_adv_timeout_expired(hdev); | |
2233 | } | |
2234 | ||
35f7498a | 2235 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2236 | { |
4821002c | 2237 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2238 | |
4821002c JH |
2239 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2240 | list_del(&uuid->list); | |
2aeb9a1a JH |
2241 | kfree(uuid); |
2242 | } | |
2aeb9a1a JH |
2243 | } |
2244 | ||
35f7498a | 2245 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2246 | { |
0378b597 | 2247 | struct link_key *key; |
55ed8ca1 | 2248 | |
0378b597 JH |
2249 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2250 | list_del_rcu(&key->list); | |
2251 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2252 | } |
55ed8ca1 JH |
2253 | } |
2254 | ||
35f7498a | 2255 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2256 | { |
970d0f1b | 2257 | struct smp_ltk *k; |
b899efaf | 2258 | |
970d0f1b JH |
2259 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2260 | list_del_rcu(&k->list); | |
2261 | kfree_rcu(k, rcu); | |
b899efaf | 2262 | } |
b899efaf VCG |
2263 | } |
2264 | ||
970c4e46 JH |
2265 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2266 | { | |
adae20cb | 2267 | struct smp_irk *k; |
970c4e46 | 2268 | |
adae20cb JH |
2269 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2270 | list_del_rcu(&k->list); | |
2271 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2272 | } |
2273 | } | |
2274 | ||
55ed8ca1 JH |
2275 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2276 | { | |
8035ded4 | 2277 | struct link_key *k; |
55ed8ca1 | 2278 | |
0378b597 JH |
2279 | rcu_read_lock(); |
2280 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2281 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2282 | rcu_read_unlock(); | |
55ed8ca1 | 2283 | return k; |
0378b597 JH |
2284 | } |
2285 | } | |
2286 | rcu_read_unlock(); | |
55ed8ca1 JH |
2287 | |
2288 | return NULL; | |
2289 | } | |
2290 | ||
745c0ce3 | 2291 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2292 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2293 | { |
2294 | /* Legacy key */ | |
2295 | if (key_type < 0x03) | |
745c0ce3 | 2296 | return true; |
d25e28ab JH |
2297 | |
2298 | /* Debug keys are insecure so don't store them persistently */ | |
2299 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2300 | return false; |
d25e28ab JH |
2301 | |
2302 | /* Changed combination key and there's no previous one */ | |
2303 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2304 | return false; |
d25e28ab JH |
2305 | |
2306 | /* Security mode 3 case */ | |
2307 | if (!conn) | |
745c0ce3 | 2308 | return true; |
d25e28ab | 2309 | |
e3befab9 JH |
2310 | /* BR/EDR key derived using SC from an LE link */ |
2311 | if (conn->type == LE_LINK) | |
2312 | return true; | |
2313 | ||
d25e28ab JH |
2314 | /* Neither local nor remote side had no-bonding as requirement */ |
2315 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2316 | return true; |
d25e28ab JH |
2317 | |
2318 | /* Local side had dedicated bonding as requirement */ | |
2319 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2320 | return true; |
d25e28ab JH |
2321 | |
2322 | /* Remote side had dedicated bonding as requirement */ | |
2323 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2324 | return true; |
d25e28ab JH |
2325 | |
2326 | /* If none of the above criteria match, then don't store the key | |
2327 | * persistently */ | |
745c0ce3 | 2328 | return false; |
d25e28ab JH |
2329 | } |
2330 | ||
e804d25d | 2331 | static u8 ltk_role(u8 type) |
98a0b845 | 2332 | { |
e804d25d JH |
2333 | if (type == SMP_LTK) |
2334 | return HCI_ROLE_MASTER; | |
98a0b845 | 2335 | |
e804d25d | 2336 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2337 | } |
2338 | ||
f3a73d97 JH |
2339 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2340 | u8 addr_type, u8 role) | |
75d262c2 | 2341 | { |
c9839a11 | 2342 | struct smp_ltk *k; |
75d262c2 | 2343 | |
970d0f1b JH |
2344 | rcu_read_lock(); |
2345 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2346 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2347 | continue; | |
2348 | ||
923e2414 | 2349 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2350 | rcu_read_unlock(); |
75d262c2 | 2351 | return k; |
970d0f1b JH |
2352 | } |
2353 | } | |
2354 | rcu_read_unlock(); | |
75d262c2 VCG |
2355 | |
2356 | return NULL; | |
2357 | } | |
75d262c2 | 2358 | |
970c4e46 JH |
2359 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2360 | { | |
2361 | struct smp_irk *irk; | |
2362 | ||
adae20cb JH |
2363 | rcu_read_lock(); |
2364 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2365 | if (!bacmp(&irk->rpa, rpa)) { | |
2366 | rcu_read_unlock(); | |
970c4e46 | 2367 | return irk; |
adae20cb | 2368 | } |
970c4e46 JH |
2369 | } |
2370 | ||
adae20cb | 2371 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2372 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2373 | bacpy(&irk->rpa, rpa); |
adae20cb | 2374 | rcu_read_unlock(); |
970c4e46 JH |
2375 | return irk; |
2376 | } | |
2377 | } | |
adae20cb | 2378 | rcu_read_unlock(); |
970c4e46 JH |
2379 | |
2380 | return NULL; | |
2381 | } | |
2382 | ||
2383 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2384 | u8 addr_type) | |
2385 | { | |
2386 | struct smp_irk *irk; | |
2387 | ||
6cfc9988 JH |
2388 | /* Identity Address must be public or static random */ |
2389 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2390 | return NULL; | |
2391 | ||
adae20cb JH |
2392 | rcu_read_lock(); |
2393 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2394 | if (addr_type == irk->addr_type && |
adae20cb JH |
2395 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2396 | rcu_read_unlock(); | |
970c4e46 | 2397 | return irk; |
adae20cb | 2398 | } |
970c4e46 | 2399 | } |
adae20cb | 2400 | rcu_read_unlock(); |
970c4e46 JH |
2401 | |
2402 | return NULL; | |
2403 | } | |
2404 | ||
567fa2aa | 2405 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2406 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2407 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2408 | { |
2409 | struct link_key *key, *old_key; | |
745c0ce3 | 2410 | u8 old_key_type; |
55ed8ca1 JH |
2411 | |
2412 | old_key = hci_find_link_key(hdev, bdaddr); | |
2413 | if (old_key) { | |
2414 | old_key_type = old_key->type; | |
2415 | key = old_key; | |
2416 | } else { | |
12adcf3a | 2417 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2418 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2419 | if (!key) |
567fa2aa | 2420 | return NULL; |
0378b597 | 2421 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2422 | } |
2423 | ||
6ed93dc6 | 2424 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2425 | |
d25e28ab JH |
2426 | /* Some buggy controller combinations generate a changed |
2427 | * combination key for legacy pairing even when there's no | |
2428 | * previous key */ | |
2429 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2430 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2431 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2432 | if (conn) |
2433 | conn->key_type = type; | |
2434 | } | |
d25e28ab | 2435 | |
55ed8ca1 | 2436 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2437 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2438 | key->pin_len = pin_len; |
2439 | ||
b6020ba0 | 2440 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2441 | key->type = old_key_type; |
4748fed2 JH |
2442 | else |
2443 | key->type = type; | |
2444 | ||
7652ff6a JH |
2445 | if (persistent) |
2446 | *persistent = hci_persistent_key(hdev, conn, type, | |
2447 | old_key_type); | |
4df378a1 | 2448 | |
567fa2aa | 2449 | return key; |
55ed8ca1 JH |
2450 | } |
2451 | ||
ca9142b8 | 2452 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2453 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2454 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2455 | { |
c9839a11 | 2456 | struct smp_ltk *key, *old_key; |
e804d25d | 2457 | u8 role = ltk_role(type); |
75d262c2 | 2458 | |
f3a73d97 | 2459 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2460 | if (old_key) |
75d262c2 | 2461 | key = old_key; |
c9839a11 | 2462 | else { |
0a14ab41 | 2463 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2464 | if (!key) |
ca9142b8 | 2465 | return NULL; |
970d0f1b | 2466 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2467 | } |
2468 | ||
75d262c2 | 2469 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2470 | key->bdaddr_type = addr_type; |
2471 | memcpy(key->val, tk, sizeof(key->val)); | |
2472 | key->authenticated = authenticated; | |
2473 | key->ediv = ediv; | |
fe39c7b2 | 2474 | key->rand = rand; |
c9839a11 VCG |
2475 | key->enc_size = enc_size; |
2476 | key->type = type; | |
75d262c2 | 2477 | |
ca9142b8 | 2478 | return key; |
75d262c2 VCG |
2479 | } |
2480 | ||
ca9142b8 JH |
2481 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2482 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2483 | { |
2484 | struct smp_irk *irk; | |
2485 | ||
2486 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2487 | if (!irk) { | |
2488 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2489 | if (!irk) | |
ca9142b8 | 2490 | return NULL; |
970c4e46 JH |
2491 | |
2492 | bacpy(&irk->bdaddr, bdaddr); | |
2493 | irk->addr_type = addr_type; | |
2494 | ||
adae20cb | 2495 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2496 | } |
2497 | ||
2498 | memcpy(irk->val, val, 16); | |
2499 | bacpy(&irk->rpa, rpa); | |
2500 | ||
ca9142b8 | 2501 | return irk; |
970c4e46 JH |
2502 | } |
2503 | ||
55ed8ca1 JH |
2504 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2505 | { | |
2506 | struct link_key *key; | |
2507 | ||
2508 | key = hci_find_link_key(hdev, bdaddr); | |
2509 | if (!key) | |
2510 | return -ENOENT; | |
2511 | ||
6ed93dc6 | 2512 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2513 | |
0378b597 JH |
2514 | list_del_rcu(&key->list); |
2515 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2516 | |
2517 | return 0; | |
2518 | } | |
2519 | ||
e0b2b27e | 2520 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2521 | { |
970d0f1b | 2522 | struct smp_ltk *k; |
c51ffa0b | 2523 | int removed = 0; |
b899efaf | 2524 | |
970d0f1b | 2525 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2526 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2527 | continue; |
2528 | ||
6ed93dc6 | 2529 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2530 | |
970d0f1b JH |
2531 | list_del_rcu(&k->list); |
2532 | kfree_rcu(k, rcu); | |
c51ffa0b | 2533 | removed++; |
b899efaf VCG |
2534 | } |
2535 | ||
c51ffa0b | 2536 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2537 | } |
2538 | ||
a7ec7338 JH |
2539 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2540 | { | |
adae20cb | 2541 | struct smp_irk *k; |
a7ec7338 | 2542 | |
adae20cb | 2543 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2544 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2545 | continue; | |
2546 | ||
2547 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2548 | ||
adae20cb JH |
2549 | list_del_rcu(&k->list); |
2550 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2551 | } |
2552 | } | |
2553 | ||
55e76b38 JH |
2554 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2555 | { | |
2556 | struct smp_ltk *k; | |
4ba9faf3 | 2557 | struct smp_irk *irk; |
55e76b38 JH |
2558 | u8 addr_type; |
2559 | ||
2560 | if (type == BDADDR_BREDR) { | |
2561 | if (hci_find_link_key(hdev, bdaddr)) | |
2562 | return true; | |
2563 | return false; | |
2564 | } | |
2565 | ||
2566 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2567 | if (type == BDADDR_LE_PUBLIC) | |
2568 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2569 | else | |
2570 | addr_type = ADDR_LE_DEV_RANDOM; | |
2571 | ||
4ba9faf3 JH |
2572 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2573 | if (irk) { | |
2574 | bdaddr = &irk->bdaddr; | |
2575 | addr_type = irk->addr_type; | |
2576 | } | |
2577 | ||
55e76b38 JH |
2578 | rcu_read_lock(); |
2579 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2580 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2581 | rcu_read_unlock(); | |
55e76b38 | 2582 | return true; |
87c8b28d | 2583 | } |
55e76b38 JH |
2584 | } |
2585 | rcu_read_unlock(); | |
2586 | ||
2587 | return false; | |
2588 | } | |
2589 | ||
6bd32326 | 2590 | /* HCI command timer function */ |
65cc2b49 | 2591 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2592 | { |
65cc2b49 MH |
2593 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2594 | cmd_timer.work); | |
6bd32326 | 2595 | |
bda4f23a AE |
2596 | if (hdev->sent_cmd) { |
2597 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2598 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2599 | ||
2600 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2601 | } else { | |
2602 | BT_ERR("%s command tx timeout", hdev->name); | |
2603 | } | |
2604 | ||
6bd32326 | 2605 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2606 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2607 | } |
2608 | ||
2763eda6 | 2609 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2610 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2611 | { |
2612 | struct oob_data *data; | |
2613 | ||
6928a924 JH |
2614 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2615 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2616 | continue; | |
2617 | if (data->bdaddr_type != bdaddr_type) | |
2618 | continue; | |
2619 | return data; | |
2620 | } | |
2763eda6 SJ |
2621 | |
2622 | return NULL; | |
2623 | } | |
2624 | ||
6928a924 JH |
2625 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2626 | u8 bdaddr_type) | |
2763eda6 SJ |
2627 | { |
2628 | struct oob_data *data; | |
2629 | ||
6928a924 | 2630 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2631 | if (!data) |
2632 | return -ENOENT; | |
2633 | ||
6928a924 | 2634 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2635 | |
2636 | list_del(&data->list); | |
2637 | kfree(data); | |
2638 | ||
2639 | return 0; | |
2640 | } | |
2641 | ||
35f7498a | 2642 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2643 | { |
2644 | struct oob_data *data, *n; | |
2645 | ||
2646 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2647 | list_del(&data->list); | |
2648 | kfree(data); | |
2649 | } | |
2763eda6 SJ |
2650 | } |
2651 | ||
0798872e | 2652 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2653 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2654 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2655 | { |
2656 | struct oob_data *data; | |
2657 | ||
6928a924 | 2658 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2659 | if (!data) { |
0a14ab41 | 2660 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2661 | if (!data) |
2662 | return -ENOMEM; | |
2663 | ||
2664 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2665 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2666 | list_add(&data->list, &hdev->remote_oob_data); |
2667 | } | |
2668 | ||
81328d5c JH |
2669 | if (hash192 && rand192) { |
2670 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2671 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2672 | if (hash256 && rand256) |
2673 | data->present = 0x03; | |
81328d5c JH |
2674 | } else { |
2675 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2676 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2677 | if (hash256 && rand256) |
2678 | data->present = 0x02; | |
2679 | else | |
2680 | data->present = 0x00; | |
0798872e MH |
2681 | } |
2682 | ||
81328d5c JH |
2683 | if (hash256 && rand256) { |
2684 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2685 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2686 | } else { | |
2687 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2688 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2689 | if (hash192 && rand192) |
2690 | data->present = 0x01; | |
81328d5c | 2691 | } |
0798872e | 2692 | |
6ed93dc6 | 2693 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2694 | |
2695 | return 0; | |
2696 | } | |
2697 | ||
d2609b34 FG |
2698 | /* This function requires the caller holds hdev->lock */ |
2699 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2700 | { | |
2701 | struct adv_info *adv_instance; | |
2702 | ||
2703 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2704 | if (adv_instance->instance == instance) | |
2705 | return adv_instance; | |
2706 | } | |
2707 | ||
2708 | return NULL; | |
2709 | } | |
2710 | ||
2711 | /* This function requires the caller holds hdev->lock */ | |
2712 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) { | |
2713 | struct adv_info *cur_instance; | |
2714 | ||
2715 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2716 | if (!cur_instance) | |
2717 | return NULL; | |
2718 | ||
2719 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2720 | struct adv_info, list)) | |
2721 | return list_first_entry(&hdev->adv_instances, | |
2722 | struct adv_info, list); | |
2723 | else | |
2724 | return list_next_entry(cur_instance, list); | |
2725 | } | |
2726 | ||
2727 | /* This function requires the caller holds hdev->lock */ | |
2728 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2729 | { | |
2730 | struct adv_info *adv_instance; | |
2731 | ||
2732 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2733 | if (!adv_instance) | |
2734 | return -ENOENT; | |
2735 | ||
2736 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2737 | ||
5d900e46 FG |
2738 | if (hdev->cur_adv_instance == instance && hdev->adv_instance_timeout) { |
2739 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2740 | hdev->adv_instance_timeout = 0; | |
2741 | } | |
2742 | ||
d2609b34 FG |
2743 | list_del(&adv_instance->list); |
2744 | kfree(adv_instance); | |
2745 | ||
2746 | hdev->adv_instance_cnt--; | |
2747 | ||
2748 | return 0; | |
2749 | } | |
2750 | ||
2751 | /* This function requires the caller holds hdev->lock */ | |
2752 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2753 | { | |
2754 | struct adv_info *adv_instance, *n; | |
2755 | ||
5d900e46 FG |
2756 | if (hdev->adv_instance_timeout) { |
2757 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2758 | hdev->adv_instance_timeout = 0; | |
2759 | } | |
2760 | ||
d2609b34 FG |
2761 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2762 | list_del(&adv_instance->list); | |
2763 | kfree(adv_instance); | |
2764 | } | |
2765 | ||
2766 | hdev->adv_instance_cnt = 0; | |
2767 | } | |
2768 | ||
2769 | /* This function requires the caller holds hdev->lock */ | |
2770 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2771 | u16 adv_data_len, u8 *adv_data, | |
2772 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2773 | u16 timeout, u16 duration) | |
2774 | { | |
2775 | struct adv_info *adv_instance; | |
2776 | ||
2777 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2778 | if (adv_instance) { | |
2779 | memset(adv_instance->adv_data, 0, | |
2780 | sizeof(adv_instance->adv_data)); | |
2781 | memset(adv_instance->scan_rsp_data, 0, | |
2782 | sizeof(adv_instance->scan_rsp_data)); | |
2783 | } else { | |
2784 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2785 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2786 | return -EOVERFLOW; | |
2787 | ||
39ecfad6 | 2788 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2789 | if (!adv_instance) |
2790 | return -ENOMEM; | |
2791 | ||
fffd38bc | 2792 | adv_instance->pending = true; |
d2609b34 FG |
2793 | adv_instance->instance = instance; |
2794 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2795 | hdev->adv_instance_cnt++; | |
2796 | } | |
2797 | ||
2798 | adv_instance->flags = flags; | |
2799 | adv_instance->adv_data_len = adv_data_len; | |
2800 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2801 | ||
2802 | if (adv_data_len) | |
2803 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2804 | ||
2805 | if (scan_rsp_len) | |
2806 | memcpy(adv_instance->scan_rsp_data, | |
2807 | scan_rsp_data, scan_rsp_len); | |
2808 | ||
2809 | adv_instance->timeout = timeout; | |
5d900e46 | 2810 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2811 | |
2812 | if (duration == 0) | |
2813 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2814 | else | |
2815 | adv_instance->duration = duration; | |
2816 | ||
2817 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2818 | ||
2819 | return 0; | |
2820 | } | |
2821 | ||
dcc36c16 | 2822 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2823 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2824 | { |
8035ded4 | 2825 | struct bdaddr_list *b; |
b2a66aad | 2826 | |
dcc36c16 | 2827 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2828 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2829 | return b; |
b9ee0a78 | 2830 | } |
b2a66aad AJ |
2831 | |
2832 | return NULL; | |
2833 | } | |
2834 | ||
dcc36c16 | 2835 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2836 | { |
2837 | struct list_head *p, *n; | |
2838 | ||
dcc36c16 | 2839 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2840 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2841 | |
2842 | list_del(p); | |
2843 | kfree(b); | |
2844 | } | |
b2a66aad AJ |
2845 | } |
2846 | ||
dcc36c16 | 2847 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2848 | { |
2849 | struct bdaddr_list *entry; | |
b2a66aad | 2850 | |
b9ee0a78 | 2851 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2852 | return -EBADF; |
2853 | ||
dcc36c16 | 2854 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2855 | return -EEXIST; |
b2a66aad | 2856 | |
27f70f3e | 2857 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2858 | if (!entry) |
2859 | return -ENOMEM; | |
b2a66aad AJ |
2860 | |
2861 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2862 | entry->bdaddr_type = type; |
b2a66aad | 2863 | |
dcc36c16 | 2864 | list_add(&entry->list, list); |
b2a66aad | 2865 | |
2a8357f2 | 2866 | return 0; |
b2a66aad AJ |
2867 | } |
2868 | ||
dcc36c16 | 2869 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2870 | { |
2871 | struct bdaddr_list *entry; | |
b2a66aad | 2872 | |
35f7498a | 2873 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2874 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2875 | return 0; |
2876 | } | |
b2a66aad | 2877 | |
dcc36c16 | 2878 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2879 | if (!entry) |
2880 | return -ENOENT; | |
2881 | ||
2882 | list_del(&entry->list); | |
2883 | kfree(entry); | |
2884 | ||
2885 | return 0; | |
2886 | } | |
2887 | ||
15819a70 AG |
2888 | /* This function requires the caller holds hdev->lock */ |
2889 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2890 | bdaddr_t *addr, u8 addr_type) | |
2891 | { | |
2892 | struct hci_conn_params *params; | |
2893 | ||
2894 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2895 | if (bacmp(¶ms->addr, addr) == 0 && | |
2896 | params->addr_type == addr_type) { | |
2897 | return params; | |
2898 | } | |
2899 | } | |
2900 | ||
2901 | return NULL; | |
2902 | } | |
2903 | ||
4b10966f | 2904 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2905 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2906 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2907 | { |
912b42ef | 2908 | struct hci_conn_params *param; |
a9b0a04c | 2909 | |
501f8827 | 2910 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2911 | if (bacmp(¶m->addr, addr) == 0 && |
2912 | param->addr_type == addr_type) | |
2913 | return param; | |
4b10966f MH |
2914 | } |
2915 | ||
2916 | return NULL; | |
a9b0a04c AG |
2917 | } |
2918 | ||
f75113a2 JP |
2919 | /* This function requires the caller holds hdev->lock */ |
2920 | struct hci_conn_params *hci_explicit_connect_lookup(struct hci_dev *hdev, | |
2921 | bdaddr_t *addr, | |
2922 | u8 addr_type) | |
2923 | { | |
2924 | struct hci_conn_params *param; | |
2925 | ||
2926 | list_for_each_entry(param, &hdev->pend_le_conns, action) { | |
2927 | if (bacmp(¶m->addr, addr) == 0 && | |
2928 | param->addr_type == addr_type && | |
2929 | param->explicit_connect) | |
2930 | return param; | |
2931 | } | |
2932 | ||
2933 | list_for_each_entry(param, &hdev->pend_le_reports, action) { | |
2934 | if (bacmp(¶m->addr, addr) == 0 && | |
2935 | param->addr_type == addr_type && | |
2936 | param->explicit_connect) | |
2937 | return param; | |
2938 | } | |
2939 | ||
2940 | return NULL; | |
2941 | } | |
2942 | ||
15819a70 | 2943 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2944 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2945 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2946 | { |
2947 | struct hci_conn_params *params; | |
2948 | ||
2949 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2950 | if (params) |
51d167c0 | 2951 | return params; |
15819a70 AG |
2952 | |
2953 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2954 | if (!params) { | |
2955 | BT_ERR("Out of memory"); | |
51d167c0 | 2956 | return NULL; |
15819a70 AG |
2957 | } |
2958 | ||
2959 | bacpy(¶ms->addr, addr); | |
2960 | params->addr_type = addr_type; | |
cef952ce AG |
2961 | |
2962 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2963 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2964 | |
bf5b3c8b MH |
2965 | params->conn_min_interval = hdev->le_conn_min_interval; |
2966 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2967 | params->conn_latency = hdev->le_conn_latency; | |
2968 | params->supervision_timeout = hdev->le_supv_timeout; | |
2969 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2970 | ||
2971 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2972 | ||
51d167c0 | 2973 | return params; |
bf5b3c8b MH |
2974 | } |
2975 | ||
f6c63249 | 2976 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2977 | { |
f8aaf9b6 | 2978 | if (params->conn) { |
f161dd41 | 2979 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2980 | hci_conn_put(params->conn); |
2981 | } | |
f161dd41 | 2982 | |
95305baa | 2983 | list_del(¶ms->action); |
15819a70 AG |
2984 | list_del(¶ms->list); |
2985 | kfree(params); | |
f6c63249 JH |
2986 | } |
2987 | ||
2988 | /* This function requires the caller holds hdev->lock */ | |
2989 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2990 | { | |
2991 | struct hci_conn_params *params; | |
2992 | ||
2993 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2994 | if (!params) | |
2995 | return; | |
2996 | ||
2997 | hci_conn_params_free(params); | |
15819a70 | 2998 | |
95305baa JH |
2999 | hci_update_background_scan(hdev); |
3000 | ||
15819a70 AG |
3001 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
3002 | } | |
3003 | ||
3004 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 3005 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
3006 | { |
3007 | struct hci_conn_params *params, *tmp; | |
3008 | ||
3009 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
3010 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
3011 | continue; | |
f75113a2 JP |
3012 | |
3013 | /* If trying to estabilish one time connection to disabled | |
3014 | * device, leave the params, but mark them as just once. | |
3015 | */ | |
3016 | if (params->explicit_connect) { | |
3017 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
3018 | continue; | |
3019 | } | |
3020 | ||
15819a70 AG |
3021 | list_del(¶ms->list); |
3022 | kfree(params); | |
3023 | } | |
3024 | ||
55af49a8 | 3025 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
3026 | } |
3027 | ||
3028 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 3029 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 3030 | { |
15819a70 | 3031 | struct hci_conn_params *params, *tmp; |
77a77a30 | 3032 | |
f6c63249 JH |
3033 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
3034 | hci_conn_params_free(params); | |
77a77a30 | 3035 | |
a4790dbd | 3036 | hci_update_background_scan(hdev); |
77a77a30 | 3037 | |
15819a70 | 3038 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
3039 | } |
3040 | ||
1904a853 | 3041 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 3042 | { |
4c87eaab AG |
3043 | if (status) { |
3044 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3045 | |
4c87eaab AG |
3046 | hci_dev_lock(hdev); |
3047 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3048 | hci_dev_unlock(hdev); | |
3049 | return; | |
3050 | } | |
7ba8b4be AG |
3051 | } |
3052 | ||
1904a853 MH |
3053 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
3054 | u16 opcode) | |
7ba8b4be | 3055 | { |
4c87eaab AG |
3056 | /* General inquiry access code (GIAC) */ |
3057 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
4c87eaab | 3058 | struct hci_cp_inquiry cp; |
7ba8b4be AG |
3059 | int err; |
3060 | ||
4c87eaab AG |
3061 | if (status) { |
3062 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3063 | return; | |
3064 | } | |
7ba8b4be | 3065 | |
2d28cfe7 JP |
3066 | hdev->discovery.scan_start = 0; |
3067 | ||
4c87eaab AG |
3068 | switch (hdev->discovery.type) { |
3069 | case DISCOV_TYPE_LE: | |
3070 | hci_dev_lock(hdev); | |
3071 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3072 | hci_dev_unlock(hdev); | |
3073 | break; | |
7ba8b4be | 3074 | |
4c87eaab | 3075 | case DISCOV_TYPE_INTERLEAVED: |
4c87eaab | 3076 | hci_dev_lock(hdev); |
7dbfac1d | 3077 | |
07d2334a JP |
3078 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, |
3079 | &hdev->quirks)) { | |
3080 | /* If we were running LE only scan, change discovery | |
3081 | * state. If we were running both LE and BR/EDR inquiry | |
3082 | * simultaneously, and BR/EDR inquiry is already | |
3083 | * finished, stop discovery, otherwise BR/EDR inquiry | |
177d0506 WK |
3084 | * will stop discovery when finished. If we will resolve |
3085 | * remote device name, do not change discovery state. | |
07d2334a | 3086 | */ |
177d0506 WK |
3087 | if (!test_bit(HCI_INQUIRY, &hdev->flags) && |
3088 | hdev->discovery.state != DISCOVERY_RESOLVING) | |
07d2334a JP |
3089 | hci_discovery_set_state(hdev, |
3090 | DISCOVERY_STOPPED); | |
3091 | } else { | |
baf880a9 JH |
3092 | struct hci_request req; |
3093 | ||
07d2334a JP |
3094 | hci_inquiry_cache_flush(hdev); |
3095 | ||
baf880a9 JH |
3096 | hci_req_init(&req, hdev); |
3097 | ||
3098 | memset(&cp, 0, sizeof(cp)); | |
3099 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3100 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3101 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
3102 | ||
07d2334a JP |
3103 | err = hci_req_run(&req, inquiry_complete); |
3104 | if (err) { | |
3105 | BT_ERR("Inquiry request failed: err %d", err); | |
3106 | hci_discovery_set_state(hdev, | |
3107 | DISCOVERY_STOPPED); | |
3108 | } | |
4c87eaab | 3109 | } |
7dbfac1d | 3110 | |
4c87eaab AG |
3111 | hci_dev_unlock(hdev); |
3112 | break; | |
7dbfac1d | 3113 | } |
7dbfac1d AG |
3114 | } |
3115 | ||
7ba8b4be AG |
3116 | static void le_scan_disable_work(struct work_struct *work) |
3117 | { | |
3118 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3119 | le_scan_disable.work); |
4c87eaab AG |
3120 | struct hci_request req; |
3121 | int err; | |
7ba8b4be AG |
3122 | |
3123 | BT_DBG("%s", hdev->name); | |
3124 | ||
2d28cfe7 JP |
3125 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
3126 | ||
4c87eaab | 3127 | hci_req_init(&req, hdev); |
28b75a89 | 3128 | |
b1efcc28 | 3129 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3130 | |
4c87eaab AG |
3131 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3132 | if (err) | |
3133 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3134 | } |
3135 | ||
2d28cfe7 JP |
3136 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
3137 | u16 opcode) | |
3138 | { | |
3139 | unsigned long timeout, duration, scan_start, now; | |
3140 | ||
3141 | BT_DBG("%s", hdev->name); | |
3142 | ||
3143 | if (status) { | |
3144 | BT_ERR("Failed to restart LE scan: status %d", status); | |
3145 | return; | |
3146 | } | |
3147 | ||
3148 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
3149 | !hdev->discovery.scan_start) | |
3150 | return; | |
3151 | ||
3152 | /* When the scan was started, hdev->le_scan_disable has been queued | |
3153 | * after duration from scan_start. During scan restart this job | |
3154 | * has been canceled, and we need to queue it again after proper | |
3155 | * timeout, to make sure that scan does not run indefinitely. | |
3156 | */ | |
3157 | duration = hdev->discovery.scan_duration; | |
3158 | scan_start = hdev->discovery.scan_start; | |
3159 | now = jiffies; | |
3160 | if (now - scan_start <= duration) { | |
3161 | int elapsed; | |
3162 | ||
3163 | if (now >= scan_start) | |
3164 | elapsed = now - scan_start; | |
3165 | else | |
3166 | elapsed = ULONG_MAX - scan_start + now; | |
3167 | ||
3168 | timeout = duration - elapsed; | |
3169 | } else { | |
3170 | timeout = 0; | |
3171 | } | |
3172 | queue_delayed_work(hdev->workqueue, | |
3173 | &hdev->le_scan_disable, timeout); | |
3174 | } | |
3175 | ||
3176 | static void le_scan_restart_work(struct work_struct *work) | |
3177 | { | |
3178 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
3179 | le_scan_restart.work); | |
3180 | struct hci_request req; | |
3181 | struct hci_cp_le_set_scan_enable cp; | |
3182 | int err; | |
3183 | ||
3184 | BT_DBG("%s", hdev->name); | |
3185 | ||
3186 | /* If controller is not scanning we are done. */ | |
d7a5a11d | 3187 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2d28cfe7 JP |
3188 | return; |
3189 | ||
3190 | hci_req_init(&req, hdev); | |
3191 | ||
3192 | hci_req_add_le_scan_disable(&req); | |
3193 | ||
3194 | memset(&cp, 0, sizeof(cp)); | |
3195 | cp.enable = LE_SCAN_ENABLE; | |
3196 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
3197 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
3198 | ||
3199 | err = hci_req_run(&req, le_scan_restart_work_complete); | |
3200 | if (err) | |
3201 | BT_ERR("Restart LE scan request failed: err %d", err); | |
3202 | } | |
3203 | ||
a1f4c318 JH |
3204 | /* Copy the Identity Address of the controller. |
3205 | * | |
3206 | * If the controller has a public BD_ADDR, then by default use that one. | |
3207 | * If this is a LE only controller without a public address, default to | |
3208 | * the static random address. | |
3209 | * | |
3210 | * For debugging purposes it is possible to force controllers with a | |
3211 | * public address to use the static random address instead. | |
50b5b952 MH |
3212 | * |
3213 | * In case BR/EDR has been disabled on a dual-mode controller and | |
3214 | * userspace has configured a static address, then that address | |
3215 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
3216 | */ |
3217 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3218 | u8 *bdaddr_type) | |
3219 | { | |
b7cb93e5 | 3220 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 3221 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 3222 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 3223 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
3224 | bacpy(bdaddr, &hdev->static_addr); |
3225 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3226 | } else { | |
3227 | bacpy(bdaddr, &hdev->bdaddr); | |
3228 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3229 | } | |
3230 | } | |
3231 | ||
9be0dab7 DH |
3232 | /* Alloc HCI device */ |
3233 | struct hci_dev *hci_alloc_dev(void) | |
3234 | { | |
3235 | struct hci_dev *hdev; | |
3236 | ||
27f70f3e | 3237 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3238 | if (!hdev) |
3239 | return NULL; | |
3240 | ||
b1b813d4 DH |
3241 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3242 | hdev->esco_type = (ESCO_HV1); | |
3243 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3244 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3245 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3246 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3247 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3248 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
3249 | hdev->adv_instance_cnt = 0; |
3250 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 3251 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 3252 | |
b1b813d4 DH |
3253 | hdev->sniff_max_interval = 800; |
3254 | hdev->sniff_min_interval = 80; | |
3255 | ||
3f959d46 | 3256 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3257 | hdev->le_adv_min_interval = 0x0800; |
3258 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3259 | hdev->le_scan_interval = 0x0060; |
3260 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3261 | hdev->le_conn_min_interval = 0x0028; |
3262 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3263 | hdev->le_conn_latency = 0x0000; |
3264 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3265 | hdev->le_def_tx_len = 0x001b; |
3266 | hdev->le_def_tx_time = 0x0148; | |
3267 | hdev->le_max_tx_len = 0x001b; | |
3268 | hdev->le_max_tx_time = 0x0148; | |
3269 | hdev->le_max_rx_len = 0x001b; | |
3270 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3271 | |
d6bfd59c | 3272 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3273 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3274 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3275 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3276 | |
b1b813d4 DH |
3277 | mutex_init(&hdev->lock); |
3278 | mutex_init(&hdev->req_lock); | |
3279 | ||
3280 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3281 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3282 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3283 | INIT_LIST_HEAD(&hdev->uuids); |
3284 | INIT_LIST_HEAD(&hdev->link_keys); | |
3285 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3286 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3287 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3288 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3289 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3290 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3291 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3292 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 3293 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
3294 | |
3295 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3296 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3297 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3298 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3299 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3300 | |
b1b813d4 DH |
3301 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3302 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3303 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2d28cfe7 | 3304 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
5d900e46 | 3305 | INIT_DELAYED_WORK(&hdev->adv_instance_expire, hci_adv_timeout_expire); |
b1b813d4 | 3306 | |
b1b813d4 DH |
3307 | skb_queue_head_init(&hdev->rx_q); |
3308 | skb_queue_head_init(&hdev->cmd_q); | |
3309 | skb_queue_head_init(&hdev->raw_q); | |
3310 | ||
3311 | init_waitqueue_head(&hdev->req_wait_q); | |
3312 | ||
65cc2b49 | 3313 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3314 | |
b1b813d4 DH |
3315 | hci_init_sysfs(hdev); |
3316 | discovery_init(hdev); | |
9be0dab7 DH |
3317 | |
3318 | return hdev; | |
3319 | } | |
3320 | EXPORT_SYMBOL(hci_alloc_dev); | |
3321 | ||
3322 | /* Free HCI device */ | |
3323 | void hci_free_dev(struct hci_dev *hdev) | |
3324 | { | |
9be0dab7 DH |
3325 | /* will free via device release */ |
3326 | put_device(&hdev->dev); | |
3327 | } | |
3328 | EXPORT_SYMBOL(hci_free_dev); | |
3329 | ||
1da177e4 LT |
3330 | /* Register HCI device */ |
3331 | int hci_register_dev(struct hci_dev *hdev) | |
3332 | { | |
b1b813d4 | 3333 | int id, error; |
1da177e4 | 3334 | |
74292d5a | 3335 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3336 | return -EINVAL; |
3337 | ||
08add513 MM |
3338 | /* Do not allow HCI_AMP devices to register at index 0, |
3339 | * so the index can be used as the AMP controller ID. | |
3340 | */ | |
3df92b31 SL |
3341 | switch (hdev->dev_type) { |
3342 | case HCI_BREDR: | |
3343 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3344 | break; | |
3345 | case HCI_AMP: | |
3346 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3347 | break; | |
3348 | default: | |
3349 | return -EINVAL; | |
1da177e4 | 3350 | } |
8e87d142 | 3351 | |
3df92b31 SL |
3352 | if (id < 0) |
3353 | return id; | |
3354 | ||
1da177e4 LT |
3355 | sprintf(hdev->name, "hci%d", id); |
3356 | hdev->id = id; | |
2d8b3a11 AE |
3357 | |
3358 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3359 | ||
d8537548 KC |
3360 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3361 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3362 | if (!hdev->workqueue) { |
3363 | error = -ENOMEM; | |
3364 | goto err; | |
3365 | } | |
f48fd9c8 | 3366 | |
d8537548 KC |
3367 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3368 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3369 | if (!hdev->req_workqueue) { |
3370 | destroy_workqueue(hdev->workqueue); | |
3371 | error = -ENOMEM; | |
3372 | goto err; | |
3373 | } | |
3374 | ||
0153e2ec MH |
3375 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3376 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3377 | ||
bdc3e0f1 MH |
3378 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3379 | ||
3380 | error = device_add(&hdev->dev); | |
33ca954d | 3381 | if (error < 0) |
54506918 | 3382 | goto err_wqueue; |
1da177e4 | 3383 | |
611b30f7 | 3384 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3385 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3386 | hdev); | |
611b30f7 MH |
3387 | if (hdev->rfkill) { |
3388 | if (rfkill_register(hdev->rfkill) < 0) { | |
3389 | rfkill_destroy(hdev->rfkill); | |
3390 | hdev->rfkill = NULL; | |
3391 | } | |
3392 | } | |
3393 | ||
5e130367 | 3394 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3395 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3396 | |
a1536da2 MH |
3397 | hci_dev_set_flag(hdev, HCI_SETUP); |
3398 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3399 | |
01cd3404 | 3400 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3401 | /* Assume BR/EDR support until proven otherwise (such as |
3402 | * through reading supported features during init. | |
3403 | */ | |
a1536da2 | 3404 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3405 | } |
ce2be9ac | 3406 | |
fcee3377 GP |
3407 | write_lock(&hci_dev_list_lock); |
3408 | list_add(&hdev->list, &hci_dev_list); | |
3409 | write_unlock(&hci_dev_list_lock); | |
3410 | ||
4a964404 MH |
3411 | /* Devices that are marked for raw-only usage are unconfigured |
3412 | * and should not be included in normal operation. | |
fee746b0 MH |
3413 | */ |
3414 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3415 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3416 | |
1da177e4 | 3417 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3418 | hci_dev_hold(hdev); |
1da177e4 | 3419 | |
19202573 | 3420 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3421 | |
1da177e4 | 3422 | return id; |
f48fd9c8 | 3423 | |
33ca954d DH |
3424 | err_wqueue: |
3425 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3426 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3427 | err: |
3df92b31 | 3428 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3429 | |
33ca954d | 3430 | return error; |
1da177e4 LT |
3431 | } |
3432 | EXPORT_SYMBOL(hci_register_dev); | |
3433 | ||
3434 | /* Unregister HCI device */ | |
59735631 | 3435 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3436 | { |
2d7cc19e | 3437 | int id; |
ef222013 | 3438 | |
c13854ce | 3439 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3440 | |
a1536da2 | 3441 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3442 | |
3df92b31 SL |
3443 | id = hdev->id; |
3444 | ||
f20d09d5 | 3445 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3446 | list_del(&hdev->list); |
f20d09d5 | 3447 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3448 | |
3449 | hci_dev_do_close(hdev); | |
3450 | ||
b9b5ef18 GP |
3451 | cancel_work_sync(&hdev->power_on); |
3452 | ||
ab81cbf9 | 3453 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3454 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3455 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3456 | hci_dev_lock(hdev); |
744cf19e | 3457 | mgmt_index_removed(hdev); |
09fd0de5 | 3458 | hci_dev_unlock(hdev); |
56e5cb86 | 3459 | } |
ab81cbf9 | 3460 | |
2e58ef3e JH |
3461 | /* mgmt_index_removed should take care of emptying the |
3462 | * pending list */ | |
3463 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3464 | ||
1da177e4 LT |
3465 | hci_notify(hdev, HCI_DEV_UNREG); |
3466 | ||
611b30f7 MH |
3467 | if (hdev->rfkill) { |
3468 | rfkill_unregister(hdev->rfkill); | |
3469 | rfkill_destroy(hdev->rfkill); | |
3470 | } | |
3471 | ||
bdc3e0f1 | 3472 | device_del(&hdev->dev); |
147e2d59 | 3473 | |
0153e2ec MH |
3474 | debugfs_remove_recursive(hdev->debugfs); |
3475 | ||
f48fd9c8 | 3476 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3477 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3478 | |
09fd0de5 | 3479 | hci_dev_lock(hdev); |
dcc36c16 | 3480 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3481 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3482 | hci_uuids_clear(hdev); |
55ed8ca1 | 3483 | hci_link_keys_clear(hdev); |
b899efaf | 3484 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3485 | hci_smp_irks_clear(hdev); |
2763eda6 | 3486 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3487 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3488 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3489 | hci_conn_params_clear_all(hdev); |
22078800 | 3490 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3491 | hci_dev_unlock(hdev); |
e2e0cacb | 3492 | |
dc946bd8 | 3493 | hci_dev_put(hdev); |
3df92b31 SL |
3494 | |
3495 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3496 | } |
3497 | EXPORT_SYMBOL(hci_unregister_dev); | |
3498 | ||
3499 | /* Suspend HCI device */ | |
3500 | int hci_suspend_dev(struct hci_dev *hdev) | |
3501 | { | |
3502 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3503 | return 0; | |
3504 | } | |
3505 | EXPORT_SYMBOL(hci_suspend_dev); | |
3506 | ||
3507 | /* Resume HCI device */ | |
3508 | int hci_resume_dev(struct hci_dev *hdev) | |
3509 | { | |
3510 | hci_notify(hdev, HCI_DEV_RESUME); | |
3511 | return 0; | |
3512 | } | |
3513 | EXPORT_SYMBOL(hci_resume_dev); | |
3514 | ||
75e0569f MH |
3515 | /* Reset HCI device */ |
3516 | int hci_reset_dev(struct hci_dev *hdev) | |
3517 | { | |
3518 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3519 | struct sk_buff *skb; | |
3520 | ||
3521 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3522 | if (!skb) | |
3523 | return -ENOMEM; | |
3524 | ||
3525 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3526 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3527 | ||
3528 | /* Send Hardware Error to upper stack */ | |
3529 | return hci_recv_frame(hdev, skb); | |
3530 | } | |
3531 | EXPORT_SYMBOL(hci_reset_dev); | |
3532 | ||
76bca880 | 3533 | /* Receive frame from HCI drivers */ |
e1a26170 | 3534 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3535 | { |
76bca880 | 3536 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3537 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3538 | kfree_skb(skb); |
3539 | return -ENXIO; | |
3540 | } | |
3541 | ||
fe806dce MH |
3542 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && |
3543 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
3544 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
3545 | kfree_skb(skb); | |
3546 | return -EINVAL; | |
3547 | } | |
3548 | ||
d82603c6 | 3549 | /* Incoming skb */ |
76bca880 MH |
3550 | bt_cb(skb)->incoming = 1; |
3551 | ||
3552 | /* Time stamp */ | |
3553 | __net_timestamp(skb); | |
3554 | ||
76bca880 | 3555 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3556 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3557 | |
76bca880 MH |
3558 | return 0; |
3559 | } | |
3560 | EXPORT_SYMBOL(hci_recv_frame); | |
3561 | ||
e875ff84 MH |
3562 | /* Receive diagnostic message from HCI drivers */ |
3563 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3564 | { | |
3565 | /* Time stamp */ | |
3566 | __net_timestamp(skb); | |
3567 | ||
3568 | /* Mark as diagnostic packet and send to monitor */ | |
3569 | bt_cb(skb)->pkt_type = HCI_DIAG_PKT; | |
3570 | hci_send_to_monitor(hdev, skb); | |
3571 | ||
3572 | kfree_skb(skb); | |
3573 | return 0; | |
3574 | } | |
3575 | EXPORT_SYMBOL(hci_recv_diag); | |
3576 | ||
1da177e4 LT |
3577 | /* ---- Interface to upper protocols ---- */ |
3578 | ||
1da177e4 LT |
3579 | int hci_register_cb(struct hci_cb *cb) |
3580 | { | |
3581 | BT_DBG("%p name %s", cb, cb->name); | |
3582 | ||
fba7ecf0 | 3583 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3584 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3585 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3586 | |
3587 | return 0; | |
3588 | } | |
3589 | EXPORT_SYMBOL(hci_register_cb); | |
3590 | ||
3591 | int hci_unregister_cb(struct hci_cb *cb) | |
3592 | { | |
3593 | BT_DBG("%p name %s", cb, cb->name); | |
3594 | ||
fba7ecf0 | 3595 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3596 | list_del(&cb->list); |
fba7ecf0 | 3597 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3598 | |
3599 | return 0; | |
3600 | } | |
3601 | EXPORT_SYMBOL(hci_unregister_cb); | |
3602 | ||
51086991 | 3603 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3604 | { |
cdc52faa MH |
3605 | int err; |
3606 | ||
0d48d939 | 3607 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3608 | |
cd82e61c MH |
3609 | /* Time stamp */ |
3610 | __net_timestamp(skb); | |
1da177e4 | 3611 | |
cd82e61c MH |
3612 | /* Send copy to monitor */ |
3613 | hci_send_to_monitor(hdev, skb); | |
3614 | ||
3615 | if (atomic_read(&hdev->promisc)) { | |
3616 | /* Send copy to the sockets */ | |
470fe1b5 | 3617 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3618 | } |
3619 | ||
3620 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3621 | skb_orphan(skb); | |
3622 | ||
73d0d3c8 MH |
3623 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3624 | kfree_skb(skb); | |
3625 | return; | |
3626 | } | |
3627 | ||
cdc52faa MH |
3628 | err = hdev->send(hdev, skb); |
3629 | if (err < 0) { | |
3630 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3631 | kfree_skb(skb); | |
3632 | } | |
1da177e4 LT |
3633 | } |
3634 | ||
1ca3a9d0 | 3635 | /* Send HCI command */ |
07dc93dd JH |
3636 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3637 | const void *param) | |
1ca3a9d0 JH |
3638 | { |
3639 | struct sk_buff *skb; | |
3640 | ||
3641 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3642 | ||
3643 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3644 | if (!skb) { | |
3645 | BT_ERR("%s no memory for command", hdev->name); | |
3646 | return -ENOMEM; | |
3647 | } | |
3648 | ||
49c922bb | 3649 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3650 | * single-command requests. |
3651 | */ | |
db6e3e8d | 3652 | bt_cb(skb)->req.start = true; |
11714b3d | 3653 | |
1da177e4 | 3654 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3655 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3656 | |
3657 | return 0; | |
3658 | } | |
1da177e4 LT |
3659 | |
3660 | /* Get data from the previously sent command */ | |
a9de9248 | 3661 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3662 | { |
3663 | struct hci_command_hdr *hdr; | |
3664 | ||
3665 | if (!hdev->sent_cmd) | |
3666 | return NULL; | |
3667 | ||
3668 | hdr = (void *) hdev->sent_cmd->data; | |
3669 | ||
a9de9248 | 3670 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3671 | return NULL; |
3672 | ||
f0e09510 | 3673 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3674 | |
3675 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3676 | } | |
3677 | ||
fbef168f LP |
3678 | /* Send HCI command and wait for command commplete event */ |
3679 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3680 | const void *param, u32 timeout) | |
3681 | { | |
3682 | struct sk_buff *skb; | |
3683 | ||
3684 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3685 | return ERR_PTR(-ENETDOWN); | |
3686 | ||
3687 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3688 | ||
3689 | hci_req_lock(hdev); | |
3690 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); | |
3691 | hci_req_unlock(hdev); | |
3692 | ||
3693 | return skb; | |
3694 | } | |
3695 | EXPORT_SYMBOL(hci_cmd_sync); | |
3696 | ||
1da177e4 LT |
3697 | /* Send ACL data */ |
3698 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3699 | { | |
3700 | struct hci_acl_hdr *hdr; | |
3701 | int len = skb->len; | |
3702 | ||
badff6d0 ACM |
3703 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3704 | skb_reset_transport_header(skb); | |
9c70220b | 3705 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3706 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3707 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3708 | } |
3709 | ||
ee22be7e | 3710 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3711 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3712 | { |
ee22be7e | 3713 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3714 | struct hci_dev *hdev = conn->hdev; |
3715 | struct sk_buff *list; | |
3716 | ||
087bfd99 GP |
3717 | skb->len = skb_headlen(skb); |
3718 | skb->data_len = 0; | |
3719 | ||
3720 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3721 | |
3722 | switch (hdev->dev_type) { | |
3723 | case HCI_BREDR: | |
3724 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3725 | break; | |
3726 | case HCI_AMP: | |
3727 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3728 | break; | |
3729 | default: | |
3730 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3731 | return; | |
3732 | } | |
087bfd99 | 3733 | |
70f23020 AE |
3734 | list = skb_shinfo(skb)->frag_list; |
3735 | if (!list) { | |
1da177e4 LT |
3736 | /* Non fragmented */ |
3737 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3738 | ||
73d80deb | 3739 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3740 | } else { |
3741 | /* Fragmented */ | |
3742 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3743 | ||
3744 | skb_shinfo(skb)->frag_list = NULL; | |
3745 | ||
9cfd5a23 JR |
3746 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3747 | * here because of 6LoWPAN links, as there this function is | |
3748 | * called from softirq and using normal spin lock could cause | |
3749 | * deadlocks. | |
3750 | */ | |
3751 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3752 | |
73d80deb | 3753 | __skb_queue_tail(queue, skb); |
e702112f AE |
3754 | |
3755 | flags &= ~ACL_START; | |
3756 | flags |= ACL_CONT; | |
1da177e4 LT |
3757 | do { |
3758 | skb = list; list = list->next; | |
8e87d142 | 3759 | |
0d48d939 | 3760 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3761 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3762 | |
3763 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3764 | ||
73d80deb | 3765 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3766 | } while (list); |
3767 | ||
9cfd5a23 | 3768 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3769 | } |
73d80deb LAD |
3770 | } |
3771 | ||
3772 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3773 | { | |
ee22be7e | 3774 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3775 | |
f0e09510 | 3776 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3777 | |
ee22be7e | 3778 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3779 | |
3eff45ea | 3780 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3781 | } |
1da177e4 LT |
3782 | |
3783 | /* Send SCO data */ | |
0d861d8b | 3784 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3785 | { |
3786 | struct hci_dev *hdev = conn->hdev; | |
3787 | struct hci_sco_hdr hdr; | |
3788 | ||
3789 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3790 | ||
aca3192c | 3791 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3792 | hdr.dlen = skb->len; |
3793 | ||
badff6d0 ACM |
3794 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3795 | skb_reset_transport_header(skb); | |
9c70220b | 3796 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3797 | |
0d48d939 | 3798 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3799 | |
1da177e4 | 3800 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3801 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3802 | } |
1da177e4 LT |
3803 | |
3804 | /* ---- HCI TX task (outgoing data) ---- */ | |
3805 | ||
3806 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3807 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3808 | int *quote) | |
1da177e4 LT |
3809 | { |
3810 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3811 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3812 | unsigned int num = 0, min = ~0; |
1da177e4 | 3813 | |
8e87d142 | 3814 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3815 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3816 | |
3817 | rcu_read_lock(); | |
3818 | ||
3819 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3820 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3821 | continue; |
769be974 MH |
3822 | |
3823 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3824 | continue; | |
3825 | ||
1da177e4 LT |
3826 | num++; |
3827 | ||
3828 | if (c->sent < min) { | |
3829 | min = c->sent; | |
3830 | conn = c; | |
3831 | } | |
52087a79 LAD |
3832 | |
3833 | if (hci_conn_num(hdev, type) == num) | |
3834 | break; | |
1da177e4 LT |
3835 | } |
3836 | ||
bf4c6325 GP |
3837 | rcu_read_unlock(); |
3838 | ||
1da177e4 | 3839 | if (conn) { |
6ed58ec5 VT |
3840 | int cnt, q; |
3841 | ||
3842 | switch (conn->type) { | |
3843 | case ACL_LINK: | |
3844 | cnt = hdev->acl_cnt; | |
3845 | break; | |
3846 | case SCO_LINK: | |
3847 | case ESCO_LINK: | |
3848 | cnt = hdev->sco_cnt; | |
3849 | break; | |
3850 | case LE_LINK: | |
3851 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3852 | break; | |
3853 | default: | |
3854 | cnt = 0; | |
3855 | BT_ERR("Unknown link type"); | |
3856 | } | |
3857 | ||
3858 | q = cnt / num; | |
1da177e4 LT |
3859 | *quote = q ? q : 1; |
3860 | } else | |
3861 | *quote = 0; | |
3862 | ||
3863 | BT_DBG("conn %p quote %d", conn, *quote); | |
3864 | return conn; | |
3865 | } | |
3866 | ||
6039aa73 | 3867 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3868 | { |
3869 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3870 | struct hci_conn *c; |
1da177e4 | 3871 | |
bae1f5d9 | 3872 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3873 | |
bf4c6325 GP |
3874 | rcu_read_lock(); |
3875 | ||
1da177e4 | 3876 | /* Kill stalled connections */ |
bf4c6325 | 3877 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3878 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3879 | BT_ERR("%s killing stalled connection %pMR", |
3880 | hdev->name, &c->dst); | |
bed71748 | 3881 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3882 | } |
3883 | } | |
bf4c6325 GP |
3884 | |
3885 | rcu_read_unlock(); | |
1da177e4 LT |
3886 | } |
3887 | ||
6039aa73 GP |
3888 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3889 | int *quote) | |
1da177e4 | 3890 | { |
73d80deb LAD |
3891 | struct hci_conn_hash *h = &hdev->conn_hash; |
3892 | struct hci_chan *chan = NULL; | |
abc5de8f | 3893 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3894 | struct hci_conn *conn; |
73d80deb LAD |
3895 | int cnt, q, conn_num = 0; |
3896 | ||
3897 | BT_DBG("%s", hdev->name); | |
3898 | ||
bf4c6325 GP |
3899 | rcu_read_lock(); |
3900 | ||
3901 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3902 | struct hci_chan *tmp; |
3903 | ||
3904 | if (conn->type != type) | |
3905 | continue; | |
3906 | ||
3907 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3908 | continue; | |
3909 | ||
3910 | conn_num++; | |
3911 | ||
8192edef | 3912 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3913 | struct sk_buff *skb; |
3914 | ||
3915 | if (skb_queue_empty(&tmp->data_q)) | |
3916 | continue; | |
3917 | ||
3918 | skb = skb_peek(&tmp->data_q); | |
3919 | if (skb->priority < cur_prio) | |
3920 | continue; | |
3921 | ||
3922 | if (skb->priority > cur_prio) { | |
3923 | num = 0; | |
3924 | min = ~0; | |
3925 | cur_prio = skb->priority; | |
3926 | } | |
3927 | ||
3928 | num++; | |
3929 | ||
3930 | if (conn->sent < min) { | |
3931 | min = conn->sent; | |
3932 | chan = tmp; | |
3933 | } | |
3934 | } | |
3935 | ||
3936 | if (hci_conn_num(hdev, type) == conn_num) | |
3937 | break; | |
3938 | } | |
3939 | ||
bf4c6325 GP |
3940 | rcu_read_unlock(); |
3941 | ||
73d80deb LAD |
3942 | if (!chan) |
3943 | return NULL; | |
3944 | ||
3945 | switch (chan->conn->type) { | |
3946 | case ACL_LINK: | |
3947 | cnt = hdev->acl_cnt; | |
3948 | break; | |
bd1eb66b AE |
3949 | case AMP_LINK: |
3950 | cnt = hdev->block_cnt; | |
3951 | break; | |
73d80deb LAD |
3952 | case SCO_LINK: |
3953 | case ESCO_LINK: | |
3954 | cnt = hdev->sco_cnt; | |
3955 | break; | |
3956 | case LE_LINK: | |
3957 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3958 | break; | |
3959 | default: | |
3960 | cnt = 0; | |
3961 | BT_ERR("Unknown link type"); | |
3962 | } | |
3963 | ||
3964 | q = cnt / num; | |
3965 | *quote = q ? q : 1; | |
3966 | BT_DBG("chan %p quote %d", chan, *quote); | |
3967 | return chan; | |
3968 | } | |
3969 | ||
02b20f0b LAD |
3970 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3971 | { | |
3972 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3973 | struct hci_conn *conn; | |
3974 | int num = 0; | |
3975 | ||
3976 | BT_DBG("%s", hdev->name); | |
3977 | ||
bf4c6325 GP |
3978 | rcu_read_lock(); |
3979 | ||
3980 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3981 | struct hci_chan *chan; |
3982 | ||
3983 | if (conn->type != type) | |
3984 | continue; | |
3985 | ||
3986 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3987 | continue; | |
3988 | ||
3989 | num++; | |
3990 | ||
8192edef | 3991 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3992 | struct sk_buff *skb; |
3993 | ||
3994 | if (chan->sent) { | |
3995 | chan->sent = 0; | |
3996 | continue; | |
3997 | } | |
3998 | ||
3999 | if (skb_queue_empty(&chan->data_q)) | |
4000 | continue; | |
4001 | ||
4002 | skb = skb_peek(&chan->data_q); | |
4003 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4004 | continue; | |
4005 | ||
4006 | skb->priority = HCI_PRIO_MAX - 1; | |
4007 | ||
4008 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4009 | skb->priority); |
02b20f0b LAD |
4010 | } |
4011 | ||
4012 | if (hci_conn_num(hdev, type) == num) | |
4013 | break; | |
4014 | } | |
bf4c6325 GP |
4015 | |
4016 | rcu_read_unlock(); | |
4017 | ||
02b20f0b LAD |
4018 | } |
4019 | ||
b71d385a AE |
4020 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4021 | { | |
4022 | /* Calculate count of blocks used by this packet */ | |
4023 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4024 | } | |
4025 | ||
6039aa73 | 4026 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4027 | { |
d7a5a11d | 4028 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
4029 | /* ACL tx timeout must be longer than maximum |
4030 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4031 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4032 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4033 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4034 | } |
63d2bc1b | 4035 | } |
1da177e4 | 4036 | |
6039aa73 | 4037 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4038 | { |
4039 | unsigned int cnt = hdev->acl_cnt; | |
4040 | struct hci_chan *chan; | |
4041 | struct sk_buff *skb; | |
4042 | int quote; | |
4043 | ||
4044 | __check_timeout(hdev, cnt); | |
04837f64 | 4045 | |
73d80deb | 4046 | while (hdev->acl_cnt && |
a8c5fb1a | 4047 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4048 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4049 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4050 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4051 | skb->len, skb->priority); |
73d80deb | 4052 | |
ec1cce24 LAD |
4053 | /* Stop if priority has changed */ |
4054 | if (skb->priority < priority) | |
4055 | break; | |
4056 | ||
4057 | skb = skb_dequeue(&chan->data_q); | |
4058 | ||
73d80deb | 4059 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4060 | bt_cb(skb)->force_active); |
04837f64 | 4061 | |
57d17d70 | 4062 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4063 | hdev->acl_last_tx = jiffies; |
4064 | ||
4065 | hdev->acl_cnt--; | |
73d80deb LAD |
4066 | chan->sent++; |
4067 | chan->conn->sent++; | |
1da177e4 LT |
4068 | } |
4069 | } | |
02b20f0b LAD |
4070 | |
4071 | if (cnt != hdev->acl_cnt) | |
4072 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4073 | } |
4074 | ||
6039aa73 | 4075 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4076 | { |
63d2bc1b | 4077 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4078 | struct hci_chan *chan; |
4079 | struct sk_buff *skb; | |
4080 | int quote; | |
bd1eb66b | 4081 | u8 type; |
b71d385a | 4082 | |
63d2bc1b | 4083 | __check_timeout(hdev, cnt); |
b71d385a | 4084 | |
bd1eb66b AE |
4085 | BT_DBG("%s", hdev->name); |
4086 | ||
4087 | if (hdev->dev_type == HCI_AMP) | |
4088 | type = AMP_LINK; | |
4089 | else | |
4090 | type = ACL_LINK; | |
4091 | ||
b71d385a | 4092 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4093 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4094 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4095 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4096 | int blocks; | |
4097 | ||
4098 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4099 | skb->len, skb->priority); |
b71d385a AE |
4100 | |
4101 | /* Stop if priority has changed */ | |
4102 | if (skb->priority < priority) | |
4103 | break; | |
4104 | ||
4105 | skb = skb_dequeue(&chan->data_q); | |
4106 | ||
4107 | blocks = __get_blocks(hdev, skb); | |
4108 | if (blocks > hdev->block_cnt) | |
4109 | return; | |
4110 | ||
4111 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4112 | bt_cb(skb)->force_active); |
b71d385a | 4113 | |
57d17d70 | 4114 | hci_send_frame(hdev, skb); |
b71d385a AE |
4115 | hdev->acl_last_tx = jiffies; |
4116 | ||
4117 | hdev->block_cnt -= blocks; | |
4118 | quote -= blocks; | |
4119 | ||
4120 | chan->sent += blocks; | |
4121 | chan->conn->sent += blocks; | |
4122 | } | |
4123 | } | |
4124 | ||
4125 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4126 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4127 | } |
4128 | ||
6039aa73 | 4129 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4130 | { |
4131 | BT_DBG("%s", hdev->name); | |
4132 | ||
bd1eb66b AE |
4133 | /* No ACL link over BR/EDR controller */ |
4134 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4135 | return; | |
4136 | ||
4137 | /* No AMP link over AMP controller */ | |
4138 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4139 | return; |
4140 | ||
4141 | switch (hdev->flow_ctl_mode) { | |
4142 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4143 | hci_sched_acl_pkt(hdev); | |
4144 | break; | |
4145 | ||
4146 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4147 | hci_sched_acl_blk(hdev); | |
4148 | break; | |
4149 | } | |
4150 | } | |
4151 | ||
1da177e4 | 4152 | /* Schedule SCO */ |
6039aa73 | 4153 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4154 | { |
4155 | struct hci_conn *conn; | |
4156 | struct sk_buff *skb; | |
4157 | int quote; | |
4158 | ||
4159 | BT_DBG("%s", hdev->name); | |
4160 | ||
52087a79 LAD |
4161 | if (!hci_conn_num(hdev, SCO_LINK)) |
4162 | return; | |
4163 | ||
1da177e4 LT |
4164 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4165 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4166 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4167 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4168 | |
4169 | conn->sent++; | |
4170 | if (conn->sent == ~0) | |
4171 | conn->sent = 0; | |
4172 | } | |
4173 | } | |
4174 | } | |
4175 | ||
6039aa73 | 4176 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4177 | { |
4178 | struct hci_conn *conn; | |
4179 | struct sk_buff *skb; | |
4180 | int quote; | |
4181 | ||
4182 | BT_DBG("%s", hdev->name); | |
4183 | ||
52087a79 LAD |
4184 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4185 | return; | |
4186 | ||
8fc9ced3 GP |
4187 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4188 | "e))) { | |
b6a0dc82 MH |
4189 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4190 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4191 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4192 | |
4193 | conn->sent++; | |
4194 | if (conn->sent == ~0) | |
4195 | conn->sent = 0; | |
4196 | } | |
4197 | } | |
4198 | } | |
4199 | ||
6039aa73 | 4200 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4201 | { |
73d80deb | 4202 | struct hci_chan *chan; |
6ed58ec5 | 4203 | struct sk_buff *skb; |
02b20f0b | 4204 | int quote, cnt, tmp; |
6ed58ec5 VT |
4205 | |
4206 | BT_DBG("%s", hdev->name); | |
4207 | ||
52087a79 LAD |
4208 | if (!hci_conn_num(hdev, LE_LINK)) |
4209 | return; | |
4210 | ||
d7a5a11d | 4211 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
4212 | /* LE tx timeout must be longer than maximum |
4213 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4214 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4215 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4216 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4217 | } |
4218 | ||
4219 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4220 | tmp = cnt; |
73d80deb | 4221 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4222 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4223 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4224 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4225 | skb->len, skb->priority); |
6ed58ec5 | 4226 | |
ec1cce24 LAD |
4227 | /* Stop if priority has changed */ |
4228 | if (skb->priority < priority) | |
4229 | break; | |
4230 | ||
4231 | skb = skb_dequeue(&chan->data_q); | |
4232 | ||
57d17d70 | 4233 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4234 | hdev->le_last_tx = jiffies; |
4235 | ||
4236 | cnt--; | |
73d80deb LAD |
4237 | chan->sent++; |
4238 | chan->conn->sent++; | |
6ed58ec5 VT |
4239 | } |
4240 | } | |
73d80deb | 4241 | |
6ed58ec5 VT |
4242 | if (hdev->le_pkts) |
4243 | hdev->le_cnt = cnt; | |
4244 | else | |
4245 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4246 | |
4247 | if (cnt != tmp) | |
4248 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4249 | } |
4250 | ||
3eff45ea | 4251 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4252 | { |
3eff45ea | 4253 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4254 | struct sk_buff *skb; |
4255 | ||
6ed58ec5 | 4256 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4257 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4258 | |
d7a5a11d | 4259 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4260 | /* Schedule queues and send stuff to HCI driver */ |
4261 | hci_sched_acl(hdev); | |
4262 | hci_sched_sco(hdev); | |
4263 | hci_sched_esco(hdev); | |
4264 | hci_sched_le(hdev); | |
4265 | } | |
6ed58ec5 | 4266 | |
1da177e4 LT |
4267 | /* Send next queued raw (unknown type) packet */ |
4268 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4269 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4270 | } |
4271 | ||
25985edc | 4272 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4273 | |
4274 | /* ACL data packet */ | |
6039aa73 | 4275 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4276 | { |
4277 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4278 | struct hci_conn *conn; | |
4279 | __u16 handle, flags; | |
4280 | ||
4281 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4282 | ||
4283 | handle = __le16_to_cpu(hdr->handle); | |
4284 | flags = hci_flags(handle); | |
4285 | handle = hci_handle(handle); | |
4286 | ||
f0e09510 | 4287 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4288 | handle, flags); |
1da177e4 LT |
4289 | |
4290 | hdev->stat.acl_rx++; | |
4291 | ||
4292 | hci_dev_lock(hdev); | |
4293 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4294 | hci_dev_unlock(hdev); | |
8e87d142 | 4295 | |
1da177e4 | 4296 | if (conn) { |
65983fc7 | 4297 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4298 | |
1da177e4 | 4299 | /* Send to upper protocol */ |
686ebf28 UF |
4300 | l2cap_recv_acldata(conn, skb, flags); |
4301 | return; | |
1da177e4 | 4302 | } else { |
8e87d142 | 4303 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4304 | hdev->name, handle); |
1da177e4 LT |
4305 | } |
4306 | ||
4307 | kfree_skb(skb); | |
4308 | } | |
4309 | ||
4310 | /* SCO data packet */ | |
6039aa73 | 4311 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4312 | { |
4313 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4314 | struct hci_conn *conn; | |
4315 | __u16 handle; | |
4316 | ||
4317 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4318 | ||
4319 | handle = __le16_to_cpu(hdr->handle); | |
4320 | ||
f0e09510 | 4321 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4322 | |
4323 | hdev->stat.sco_rx++; | |
4324 | ||
4325 | hci_dev_lock(hdev); | |
4326 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4327 | hci_dev_unlock(hdev); | |
4328 | ||
4329 | if (conn) { | |
1da177e4 | 4330 | /* Send to upper protocol */ |
686ebf28 UF |
4331 | sco_recv_scodata(conn, skb); |
4332 | return; | |
1da177e4 | 4333 | } else { |
8e87d142 | 4334 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4335 | hdev->name, handle); |
1da177e4 LT |
4336 | } |
4337 | ||
4338 | kfree_skb(skb); | |
4339 | } | |
4340 | ||
9238f36a JH |
4341 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4342 | { | |
4343 | struct sk_buff *skb; | |
4344 | ||
4345 | skb = skb_peek(&hdev->cmd_q); | |
4346 | if (!skb) | |
4347 | return true; | |
4348 | ||
db6e3e8d | 4349 | return bt_cb(skb)->req.start; |
9238f36a JH |
4350 | } |
4351 | ||
42c6b129 JH |
4352 | static void hci_resend_last(struct hci_dev *hdev) |
4353 | { | |
4354 | struct hci_command_hdr *sent; | |
4355 | struct sk_buff *skb; | |
4356 | u16 opcode; | |
4357 | ||
4358 | if (!hdev->sent_cmd) | |
4359 | return; | |
4360 | ||
4361 | sent = (void *) hdev->sent_cmd->data; | |
4362 | opcode = __le16_to_cpu(sent->opcode); | |
4363 | if (opcode == HCI_OP_RESET) | |
4364 | return; | |
4365 | ||
4366 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4367 | if (!skb) | |
4368 | return; | |
4369 | ||
4370 | skb_queue_head(&hdev->cmd_q, skb); | |
4371 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4372 | } | |
4373 | ||
e6214487 JH |
4374 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4375 | hci_req_complete_t *req_complete, | |
4376 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4377 | { |
9238f36a JH |
4378 | struct sk_buff *skb; |
4379 | unsigned long flags; | |
4380 | ||
4381 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4382 | ||
42c6b129 JH |
4383 | /* If the completed command doesn't match the last one that was |
4384 | * sent we need to do special handling of it. | |
9238f36a | 4385 | */ |
42c6b129 JH |
4386 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4387 | /* Some CSR based controllers generate a spontaneous | |
4388 | * reset complete event during init and any pending | |
4389 | * command will never be completed. In such a case we | |
4390 | * need to resend whatever was the last sent | |
4391 | * command. | |
4392 | */ | |
4393 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4394 | hci_resend_last(hdev); | |
4395 | ||
9238f36a | 4396 | return; |
42c6b129 | 4397 | } |
9238f36a JH |
4398 | |
4399 | /* If the command succeeded and there's still more commands in | |
4400 | * this request the request is not yet complete. | |
4401 | */ | |
4402 | if (!status && !hci_req_is_complete(hdev)) | |
4403 | return; | |
4404 | ||
4405 | /* If this was the last command in a request the complete | |
4406 | * callback would be found in hdev->sent_cmd instead of the | |
4407 | * command queue (hdev->cmd_q). | |
4408 | */ | |
e6214487 JH |
4409 | if (bt_cb(hdev->sent_cmd)->req.complete) { |
4410 | *req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
4411 | return; | |
4412 | } | |
53e21fbc | 4413 | |
e6214487 JH |
4414 | if (bt_cb(hdev->sent_cmd)->req.complete_skb) { |
4415 | *req_complete_skb = bt_cb(hdev->sent_cmd)->req.complete_skb; | |
4416 | return; | |
9238f36a JH |
4417 | } |
4418 | ||
4419 | /* Remove all pending commands belonging to this request */ | |
4420 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4421 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
db6e3e8d | 4422 | if (bt_cb(skb)->req.start) { |
9238f36a JH |
4423 | __skb_queue_head(&hdev->cmd_q, skb); |
4424 | break; | |
4425 | } | |
4426 | ||
e6214487 JH |
4427 | *req_complete = bt_cb(skb)->req.complete; |
4428 | *req_complete_skb = bt_cb(skb)->req.complete_skb; | |
9238f36a JH |
4429 | kfree_skb(skb); |
4430 | } | |
4431 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4432 | } |
4433 | ||
b78752cc | 4434 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4435 | { |
b78752cc | 4436 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4437 | struct sk_buff *skb; |
4438 | ||
4439 | BT_DBG("%s", hdev->name); | |
4440 | ||
1da177e4 | 4441 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4442 | /* Send copy to monitor */ |
4443 | hci_send_to_monitor(hdev, skb); | |
4444 | ||
1da177e4 LT |
4445 | if (atomic_read(&hdev->promisc)) { |
4446 | /* Send copy to the sockets */ | |
470fe1b5 | 4447 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4448 | } |
4449 | ||
d7a5a11d | 4450 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4451 | kfree_skb(skb); |
4452 | continue; | |
4453 | } | |
4454 | ||
4455 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4456 | /* Don't process data packets in this states. */ | |
0d48d939 | 4457 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4458 | case HCI_ACLDATA_PKT: |
4459 | case HCI_SCODATA_PKT: | |
4460 | kfree_skb(skb); | |
4461 | continue; | |
3ff50b79 | 4462 | } |
1da177e4 LT |
4463 | } |
4464 | ||
4465 | /* Process frame */ | |
0d48d939 | 4466 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4467 | case HCI_EVENT_PKT: |
b78752cc | 4468 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4469 | hci_event_packet(hdev, skb); |
4470 | break; | |
4471 | ||
4472 | case HCI_ACLDATA_PKT: | |
4473 | BT_DBG("%s ACL data packet", hdev->name); | |
4474 | hci_acldata_packet(hdev, skb); | |
4475 | break; | |
4476 | ||
4477 | case HCI_SCODATA_PKT: | |
4478 | BT_DBG("%s SCO data packet", hdev->name); | |
4479 | hci_scodata_packet(hdev, skb); | |
4480 | break; | |
4481 | ||
4482 | default: | |
4483 | kfree_skb(skb); | |
4484 | break; | |
4485 | } | |
4486 | } | |
1da177e4 LT |
4487 | } |
4488 | ||
c347b765 | 4489 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4490 | { |
c347b765 | 4491 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4492 | struct sk_buff *skb; |
4493 | ||
2104786b AE |
4494 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4495 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4496 | |
1da177e4 | 4497 | /* Send queued commands */ |
5a08ecce AE |
4498 | if (atomic_read(&hdev->cmd_cnt)) { |
4499 | skb = skb_dequeue(&hdev->cmd_q); | |
4500 | if (!skb) | |
4501 | return; | |
4502 | ||
7585b97a | 4503 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4504 | |
a675d7f1 | 4505 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4506 | if (hdev->sent_cmd) { |
1da177e4 | 4507 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4508 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4509 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4510 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4511 | else |
65cc2b49 MH |
4512 | schedule_delayed_work(&hdev->cmd_timer, |
4513 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4514 | } else { |
4515 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4516 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4517 | } |
4518 | } | |
4519 | } |