Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
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; | |
97 | int err; | |
98 | ||
99 | if (!test_bit(HCI_UP, &hdev->flags)) | |
100 | return -ENETDOWN; | |
101 | ||
102 | if (copy_from_user(buf, user_buf, buf_size)) | |
103 | return -EFAULT; | |
104 | ||
105 | buf[buf_size] = '\0'; | |
106 | if (strtobool(buf, &enable)) | |
107 | return -EINVAL; | |
108 | ||
b7cb93e5 | 109 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
110 | return -EALREADY; |
111 | ||
112 | hci_req_lock(hdev); | |
113 | if (enable) | |
114 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
115 | HCI_CMD_TIMEOUT); | |
116 | else | |
117 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
118 | HCI_CMD_TIMEOUT); | |
119 | hci_req_unlock(hdev); | |
120 | ||
121 | if (IS_ERR(skb)) | |
122 | return PTR_ERR(skb); | |
123 | ||
124 | err = -bt_to_errno(skb->data[0]); | |
125 | kfree_skb(skb); | |
126 | ||
127 | if (err < 0) | |
128 | return err; | |
129 | ||
b7cb93e5 | 130 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
131 | |
132 | return count; | |
133 | } | |
134 | ||
135 | static const struct file_operations dut_mode_fops = { | |
136 | .open = simple_open, | |
137 | .read = dut_mode_read, | |
138 | .write = dut_mode_write, | |
139 | .llseek = default_llseek, | |
140 | }; | |
141 | ||
1da177e4 LT |
142 | /* ---- HCI requests ---- */ |
143 | ||
f60cb305 JH |
144 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
145 | struct sk_buff *skb) | |
1da177e4 | 146 | { |
42c6b129 | 147 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
148 | |
149 | if (hdev->req_status == HCI_REQ_PEND) { | |
150 | hdev->req_result = result; | |
151 | hdev->req_status = HCI_REQ_DONE; | |
f60cb305 JH |
152 | if (skb) |
153 | hdev->req_skb = skb_get(skb); | |
1da177e4 LT |
154 | wake_up_interruptible(&hdev->req_wait_q); |
155 | } | |
156 | } | |
157 | ||
158 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
159 | { | |
160 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
161 | ||
162 | if (hdev->req_status == HCI_REQ_PEND) { | |
163 | hdev->req_result = err; | |
164 | hdev->req_status = HCI_REQ_CANCELED; | |
165 | wake_up_interruptible(&hdev->req_wait_q); | |
166 | } | |
167 | } | |
168 | ||
7b1abbbe | 169 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 170 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
171 | { |
172 | DECLARE_WAITQUEUE(wait, current); | |
173 | struct hci_request req; | |
f60cb305 | 174 | struct sk_buff *skb; |
75e84b7c JH |
175 | int err = 0; |
176 | ||
177 | BT_DBG("%s", hdev->name); | |
178 | ||
179 | hci_req_init(&req, hdev); | |
180 | ||
7b1abbbe | 181 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
182 | |
183 | hdev->req_status = HCI_REQ_PEND; | |
184 | ||
75e84b7c JH |
185 | add_wait_queue(&hdev->req_wait_q, &wait); |
186 | set_current_state(TASK_INTERRUPTIBLE); | |
187 | ||
f60cb305 | 188 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
039fada5 CP |
189 | if (err < 0) { |
190 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
22a3ceab | 191 | set_current_state(TASK_RUNNING); |
039fada5 CP |
192 | return ERR_PTR(err); |
193 | } | |
194 | ||
75e84b7c JH |
195 | schedule_timeout(timeout); |
196 | ||
197 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
198 | ||
199 | if (signal_pending(current)) | |
200 | return ERR_PTR(-EINTR); | |
201 | ||
202 | switch (hdev->req_status) { | |
203 | case HCI_REQ_DONE: | |
204 | err = -bt_to_errno(hdev->req_result); | |
205 | break; | |
206 | ||
207 | case HCI_REQ_CANCELED: | |
208 | err = -hdev->req_result; | |
209 | break; | |
210 | ||
211 | default: | |
212 | err = -ETIMEDOUT; | |
213 | break; | |
214 | } | |
215 | ||
216 | hdev->req_status = hdev->req_result = 0; | |
f60cb305 JH |
217 | skb = hdev->req_skb; |
218 | hdev->req_skb = NULL; | |
75e84b7c JH |
219 | |
220 | BT_DBG("%s end: err %d", hdev->name, err); | |
221 | ||
f60cb305 JH |
222 | if (err < 0) { |
223 | kfree_skb(skb); | |
75e84b7c | 224 | return ERR_PTR(err); |
f60cb305 | 225 | } |
75e84b7c | 226 | |
757aa0b5 JH |
227 | if (!skb) |
228 | return ERR_PTR(-ENODATA); | |
229 | ||
230 | return skb; | |
7b1abbbe JH |
231 | } |
232 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
233 | ||
234 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 235 | const void *param, u32 timeout) |
7b1abbbe JH |
236 | { |
237 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
238 | } |
239 | EXPORT_SYMBOL(__hci_cmd_sync); | |
240 | ||
1da177e4 | 241 | /* Execute request and wait for completion. */ |
01178cd4 | 242 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
243 | void (*func)(struct hci_request *req, |
244 | unsigned long opt), | |
01178cd4 | 245 | unsigned long opt, __u32 timeout) |
1da177e4 | 246 | { |
42c6b129 | 247 | struct hci_request req; |
1da177e4 LT |
248 | DECLARE_WAITQUEUE(wait, current); |
249 | int err = 0; | |
250 | ||
251 | BT_DBG("%s start", hdev->name); | |
252 | ||
42c6b129 JH |
253 | hci_req_init(&req, hdev); |
254 | ||
1da177e4 LT |
255 | hdev->req_status = HCI_REQ_PEND; |
256 | ||
42c6b129 | 257 | func(&req, opt); |
53cce22d | 258 | |
039fada5 CP |
259 | add_wait_queue(&hdev->req_wait_q, &wait); |
260 | set_current_state(TASK_INTERRUPTIBLE); | |
261 | ||
f60cb305 | 262 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
42c6b129 | 263 | if (err < 0) { |
53cce22d | 264 | hdev->req_status = 0; |
920c8300 | 265 | |
039fada5 | 266 | remove_wait_queue(&hdev->req_wait_q, &wait); |
22a3ceab | 267 | set_current_state(TASK_RUNNING); |
039fada5 | 268 | |
920c8300 AG |
269 | /* ENODATA means the HCI request command queue is empty. |
270 | * This can happen when a request with conditionals doesn't | |
271 | * trigger any commands to be sent. This is normal behavior | |
272 | * and should not trigger an error return. | |
42c6b129 | 273 | */ |
920c8300 AG |
274 | if (err == -ENODATA) |
275 | return 0; | |
276 | ||
277 | return err; | |
53cce22d JH |
278 | } |
279 | ||
1da177e4 LT |
280 | schedule_timeout(timeout); |
281 | ||
282 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
283 | ||
284 | if (signal_pending(current)) | |
285 | return -EINTR; | |
286 | ||
287 | switch (hdev->req_status) { | |
288 | case HCI_REQ_DONE: | |
e175072f | 289 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
290 | break; |
291 | ||
292 | case HCI_REQ_CANCELED: | |
293 | err = -hdev->req_result; | |
294 | break; | |
295 | ||
296 | default: | |
297 | err = -ETIMEDOUT; | |
298 | break; | |
3ff50b79 | 299 | } |
1da177e4 | 300 | |
a5040efa | 301 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
302 | |
303 | BT_DBG("%s end: err %d", hdev->name, err); | |
304 | ||
305 | return err; | |
306 | } | |
307 | ||
01178cd4 | 308 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
309 | void (*req)(struct hci_request *req, |
310 | unsigned long opt), | |
01178cd4 | 311 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
312 | { |
313 | int ret; | |
314 | ||
7c6a329e MH |
315 | if (!test_bit(HCI_UP, &hdev->flags)) |
316 | return -ENETDOWN; | |
317 | ||
1da177e4 LT |
318 | /* Serialize all requests */ |
319 | hci_req_lock(hdev); | |
01178cd4 | 320 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
321 | hci_req_unlock(hdev); |
322 | ||
323 | return ret; | |
324 | } | |
325 | ||
42c6b129 | 326 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 327 | { |
42c6b129 | 328 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
329 | |
330 | /* Reset device */ | |
42c6b129 JH |
331 | set_bit(HCI_RESET, &req->hdev->flags); |
332 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
333 | } |
334 | ||
42c6b129 | 335 | static void bredr_init(struct hci_request *req) |
1da177e4 | 336 | { |
42c6b129 | 337 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 338 | |
1da177e4 | 339 | /* Read Local Supported Features */ |
42c6b129 | 340 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 341 | |
1143e5a6 | 342 | /* Read Local Version */ |
42c6b129 | 343 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
344 | |
345 | /* Read BD Address */ | |
42c6b129 | 346 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
347 | } |
348 | ||
0af801b9 | 349 | static void amp_init1(struct hci_request *req) |
e61ef499 | 350 | { |
42c6b129 | 351 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 352 | |
e61ef499 | 353 | /* Read Local Version */ |
42c6b129 | 354 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 355 | |
f6996cfe MH |
356 | /* Read Local Supported Commands */ |
357 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
358 | ||
6bcbc489 | 359 | /* Read Local AMP Info */ |
42c6b129 | 360 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
361 | |
362 | /* Read Data Blk size */ | |
42c6b129 | 363 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 364 | |
f38ba941 MH |
365 | /* Read Flow Control Mode */ |
366 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
367 | ||
7528ca1c MH |
368 | /* Read Location Data */ |
369 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
370 | } |
371 | ||
0af801b9 JH |
372 | static void amp_init2(struct hci_request *req) |
373 | { | |
374 | /* Read Local Supported Features. Not all AMP controllers | |
375 | * support this so it's placed conditionally in the second | |
376 | * stage init. | |
377 | */ | |
378 | if (req->hdev->commands[14] & 0x20) | |
379 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
380 | } | |
381 | ||
42c6b129 | 382 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 383 | { |
42c6b129 | 384 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
385 | |
386 | BT_DBG("%s %ld", hdev->name, opt); | |
387 | ||
11778716 AE |
388 | /* Reset */ |
389 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 390 | hci_reset_req(req, 0); |
11778716 | 391 | |
e61ef499 AE |
392 | switch (hdev->dev_type) { |
393 | case HCI_BREDR: | |
42c6b129 | 394 | bredr_init(req); |
e61ef499 AE |
395 | break; |
396 | ||
397 | case HCI_AMP: | |
0af801b9 | 398 | amp_init1(req); |
e61ef499 AE |
399 | break; |
400 | ||
401 | default: | |
402 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
403 | break; | |
404 | } | |
e61ef499 AE |
405 | } |
406 | ||
42c6b129 | 407 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 408 | { |
2177bab5 JH |
409 | __le16 param; |
410 | __u8 flt_type; | |
411 | ||
412 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 413 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
414 | |
415 | /* Read Class of Device */ | |
42c6b129 | 416 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
417 | |
418 | /* Read Local Name */ | |
42c6b129 | 419 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
420 | |
421 | /* Read Voice Setting */ | |
42c6b129 | 422 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 423 | |
b4cb9fb2 MH |
424 | /* Read Number of Supported IAC */ |
425 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
426 | ||
4b836f39 MH |
427 | /* Read Current IAC LAP */ |
428 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
429 | ||
2177bab5 JH |
430 | /* Clear Event Filters */ |
431 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 432 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
433 | |
434 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 435 | param = cpu_to_le16(0x7d00); |
42c6b129 | 436 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
437 | } |
438 | ||
42c6b129 | 439 | static void le_setup(struct hci_request *req) |
2177bab5 | 440 | { |
c73eee91 JH |
441 | struct hci_dev *hdev = req->hdev; |
442 | ||
2177bab5 | 443 | /* Read LE Buffer Size */ |
42c6b129 | 444 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
445 | |
446 | /* Read LE Local Supported Features */ | |
42c6b129 | 447 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 448 | |
747d3f03 MH |
449 | /* Read LE Supported States */ |
450 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
451 | ||
2177bab5 | 452 | /* Read LE White List Size */ |
42c6b129 | 453 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 454 | |
747d3f03 MH |
455 | /* Clear LE White List */ |
456 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
457 | |
458 | /* LE-only controllers have LE implicitly enabled */ | |
459 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 460 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
461 | } |
462 | ||
42c6b129 | 463 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 464 | { |
42c6b129 JH |
465 | struct hci_dev *hdev = req->hdev; |
466 | ||
2177bab5 JH |
467 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
468 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
469 | * command otherwise. | |
470 | */ | |
471 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
472 | ||
473 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
474 | * any event mask for pre 1.2 devices. | |
475 | */ | |
476 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
477 | return; | |
478 | ||
479 | if (lmp_bredr_capable(hdev)) { | |
480 | events[4] |= 0x01; /* Flow Specification Complete */ | |
481 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
482 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
483 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
484 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
485 | } else { |
486 | /* Use a different default for LE-only devices */ | |
487 | memset(events, 0, sizeof(events)); | |
488 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
489 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
490 | events[1] |= 0x20; /* Command Complete */ | |
491 | events[1] |= 0x40; /* Command Status */ | |
492 | events[1] |= 0x80; /* Hardware Error */ | |
493 | events[2] |= 0x04; /* Number of Completed Packets */ | |
494 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
495 | |
496 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
497 | events[0] |= 0x80; /* Encryption Change */ | |
498 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
499 | } | |
2177bab5 JH |
500 | } |
501 | ||
502 | if (lmp_inq_rssi_capable(hdev)) | |
503 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
504 | ||
505 | if (lmp_sniffsubr_capable(hdev)) | |
506 | events[5] |= 0x20; /* Sniff Subrating */ | |
507 | ||
508 | if (lmp_pause_enc_capable(hdev)) | |
509 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
510 | ||
511 | if (lmp_ext_inq_capable(hdev)) | |
512 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
513 | ||
514 | if (lmp_no_flush_capable(hdev)) | |
515 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
516 | ||
517 | if (lmp_lsto_capable(hdev)) | |
518 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
519 | ||
520 | if (lmp_ssp_capable(hdev)) { | |
521 | events[6] |= 0x01; /* IO Capability Request */ | |
522 | events[6] |= 0x02; /* IO Capability Response */ | |
523 | events[6] |= 0x04; /* User Confirmation Request */ | |
524 | events[6] |= 0x08; /* User Passkey Request */ | |
525 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
526 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
527 | events[7] |= 0x04; /* User Passkey Notification */ | |
528 | events[7] |= 0x08; /* Keypress Notification */ | |
529 | events[7] |= 0x10; /* Remote Host Supported | |
530 | * Features Notification | |
531 | */ | |
532 | } | |
533 | ||
534 | if (lmp_le_capable(hdev)) | |
535 | events[7] |= 0x20; /* LE Meta-Event */ | |
536 | ||
42c6b129 | 537 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
538 | } |
539 | ||
42c6b129 | 540 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 541 | { |
42c6b129 JH |
542 | struct hci_dev *hdev = req->hdev; |
543 | ||
0af801b9 JH |
544 | if (hdev->dev_type == HCI_AMP) |
545 | return amp_init2(req); | |
546 | ||
2177bab5 | 547 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 548 | bredr_setup(req); |
56f87901 | 549 | else |
a358dc11 | 550 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
551 | |
552 | if (lmp_le_capable(hdev)) | |
42c6b129 | 553 | le_setup(req); |
2177bab5 | 554 | |
0f3adeae MH |
555 | /* All Bluetooth 1.2 and later controllers should support the |
556 | * HCI command for reading the local supported commands. | |
557 | * | |
558 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
559 | * but do not have support for this command. If that is the case, | |
560 | * the driver can quirk the behavior and skip reading the local | |
561 | * supported commands. | |
3f8e2d75 | 562 | */ |
0f3adeae MH |
563 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
564 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 565 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
566 | |
567 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
568 | /* When SSP is available, then the host features page |
569 | * should also be available as well. However some | |
570 | * controllers list the max_page as 0 as long as SSP | |
571 | * has not been enabled. To achieve proper debugging | |
572 | * output, force the minimum max_page to 1 at least. | |
573 | */ | |
574 | hdev->max_page = 0x01; | |
575 | ||
d7a5a11d | 576 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 577 | u8 mode = 0x01; |
574ea3c7 | 578 | |
42c6b129 JH |
579 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
580 | sizeof(mode), &mode); | |
2177bab5 JH |
581 | } else { |
582 | struct hci_cp_write_eir cp; | |
583 | ||
584 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
585 | memset(&cp, 0, sizeof(cp)); | |
586 | ||
42c6b129 | 587 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
588 | } |
589 | } | |
590 | ||
043ec9bf MH |
591 | if (lmp_inq_rssi_capable(hdev) || |
592 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
593 | u8 mode; |
594 | ||
595 | /* If Extended Inquiry Result events are supported, then | |
596 | * they are clearly preferred over Inquiry Result with RSSI | |
597 | * events. | |
598 | */ | |
599 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
600 | ||
601 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
602 | } | |
2177bab5 JH |
603 | |
604 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 605 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
606 | |
607 | if (lmp_ext_feat_capable(hdev)) { | |
608 | struct hci_cp_read_local_ext_features cp; | |
609 | ||
610 | cp.page = 0x01; | |
42c6b129 JH |
611 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
612 | sizeof(cp), &cp); | |
2177bab5 JH |
613 | } |
614 | ||
d7a5a11d | 615 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 616 | u8 enable = 1; |
42c6b129 JH |
617 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
618 | &enable); | |
2177bab5 JH |
619 | } |
620 | } | |
621 | ||
42c6b129 | 622 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 623 | { |
42c6b129 | 624 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
625 | struct hci_cp_write_def_link_policy cp; |
626 | u16 link_policy = 0; | |
627 | ||
628 | if (lmp_rswitch_capable(hdev)) | |
629 | link_policy |= HCI_LP_RSWITCH; | |
630 | if (lmp_hold_capable(hdev)) | |
631 | link_policy |= HCI_LP_HOLD; | |
632 | if (lmp_sniff_capable(hdev)) | |
633 | link_policy |= HCI_LP_SNIFF; | |
634 | if (lmp_park_capable(hdev)) | |
635 | link_policy |= HCI_LP_PARK; | |
636 | ||
637 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 638 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
639 | } |
640 | ||
42c6b129 | 641 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 642 | { |
42c6b129 | 643 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
644 | struct hci_cp_write_le_host_supported cp; |
645 | ||
c73eee91 JH |
646 | /* LE-only devices do not support explicit enablement */ |
647 | if (!lmp_bredr_capable(hdev)) | |
648 | return; | |
649 | ||
2177bab5 JH |
650 | memset(&cp, 0, sizeof(cp)); |
651 | ||
d7a5a11d | 652 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 653 | cp.le = 0x01; |
32226e4f | 654 | cp.simul = 0x00; |
2177bab5 JH |
655 | } |
656 | ||
657 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
658 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
659 | &cp); | |
2177bab5 JH |
660 | } |
661 | ||
d62e6d67 JH |
662 | static void hci_set_event_mask_page_2(struct hci_request *req) |
663 | { | |
664 | struct hci_dev *hdev = req->hdev; | |
665 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
666 | ||
667 | /* If Connectionless Slave Broadcast master role is supported | |
668 | * enable all necessary events for it. | |
669 | */ | |
53b834d2 | 670 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
671 | events[1] |= 0x40; /* Triggered Clock Capture */ |
672 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
673 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
674 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
675 | } | |
676 | ||
677 | /* If Connectionless Slave Broadcast slave role is supported | |
678 | * enable all necessary events for it. | |
679 | */ | |
53b834d2 | 680 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
681 | events[2] |= 0x01; /* Synchronization Train Received */ |
682 | events[2] |= 0x02; /* CSB Receive */ | |
683 | events[2] |= 0x04; /* CSB Timeout */ | |
684 | events[2] |= 0x08; /* Truncated Page Complete */ | |
685 | } | |
686 | ||
40c59fcb | 687 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 688 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
689 | events[2] |= 0x80; |
690 | ||
d62e6d67 JH |
691 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
692 | } | |
693 | ||
42c6b129 | 694 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 695 | { |
42c6b129 | 696 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 697 | u8 p; |
42c6b129 | 698 | |
0da71f1b MH |
699 | hci_setup_event_mask(req); |
700 | ||
48ce62c4 MH |
701 | if (hdev->commands[6] & 0x20) { |
702 | struct hci_cp_read_stored_link_key cp; | |
703 | ||
704 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
705 | cp.read_all = 0x01; | |
706 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
707 | } | |
708 | ||
2177bab5 | 709 | if (hdev->commands[5] & 0x10) |
42c6b129 | 710 | hci_setup_link_policy(req); |
2177bab5 | 711 | |
417287de MH |
712 | if (hdev->commands[8] & 0x01) |
713 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
714 | ||
715 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
716 | * support the Read Page Scan Type command. Check support for | |
717 | * this command in the bit mask of supported commands. | |
718 | */ | |
719 | if (hdev->commands[13] & 0x01) | |
720 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
721 | ||
9193c6e8 AG |
722 | if (lmp_le_capable(hdev)) { |
723 | u8 events[8]; | |
724 | ||
725 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
726 | events[0] = 0x0f; |
727 | ||
728 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
729 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
730 | |
731 | /* If controller supports the Connection Parameters Request | |
732 | * Link Layer Procedure, enable the corresponding event. | |
733 | */ | |
734 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
735 | events[0] |= 0x20; /* LE Remote Connection | |
736 | * Parameter Request | |
737 | */ | |
738 | ||
a9f6068e MH |
739 | /* If the controller supports the Data Length Extension |
740 | * feature, enable the corresponding event. | |
741 | */ | |
742 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
743 | events[0] |= 0x40; /* LE Data Length Change */ | |
744 | ||
4b71bba4 MH |
745 | /* If the controller supports Extended Scanner Filter |
746 | * Policies, enable the correspondig event. | |
747 | */ | |
748 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
749 | events[1] |= 0x04; /* LE Direct Advertising | |
750 | * Report | |
751 | */ | |
752 | ||
5a34bd5f MH |
753 | /* If the controller supports the LE Read Local P-256 |
754 | * Public Key command, enable the corresponding event. | |
755 | */ | |
756 | if (hdev->commands[34] & 0x02) | |
757 | events[0] |= 0x80; /* LE Read Local P-256 | |
758 | * Public Key Complete | |
759 | */ | |
760 | ||
761 | /* If the controller supports the LE Generate DHKey | |
762 | * command, enable the corresponding event. | |
763 | */ | |
764 | if (hdev->commands[34] & 0x04) | |
765 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
766 | ||
9193c6e8 AG |
767 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
768 | events); | |
769 | ||
15a49cca MH |
770 | if (hdev->commands[25] & 0x40) { |
771 | /* Read LE Advertising Channel TX Power */ | |
772 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
773 | } | |
774 | ||
a9f6068e MH |
775 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
776 | /* Read LE Maximum Data Length */ | |
777 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
778 | ||
779 | /* Read LE Suggested Default Data Length */ | |
780 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
781 | } | |
782 | ||
42c6b129 | 783 | hci_set_le_support(req); |
9193c6e8 | 784 | } |
d2c5d77f JH |
785 | |
786 | /* Read features beyond page 1 if available */ | |
787 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
788 | struct hci_cp_read_local_ext_features cp; | |
789 | ||
790 | cp.page = p; | |
791 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
792 | sizeof(cp), &cp); | |
793 | } | |
2177bab5 JH |
794 | } |
795 | ||
5d4e7e8d JH |
796 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
797 | { | |
798 | struct hci_dev *hdev = req->hdev; | |
799 | ||
36f260ce MH |
800 | /* Some Broadcom based Bluetooth controllers do not support the |
801 | * Delete Stored Link Key command. They are clearly indicating its | |
802 | * absence in the bit mask of supported commands. | |
803 | * | |
804 | * Check the supported commands and only if the the command is marked | |
805 | * as supported send it. If not supported assume that the controller | |
806 | * does not have actual support for stored link keys which makes this | |
807 | * command redundant anyway. | |
808 | * | |
809 | * Some controllers indicate that they support handling deleting | |
810 | * stored link keys, but they don't. The quirk lets a driver | |
811 | * just disable this command. | |
812 | */ | |
813 | if (hdev->commands[6] & 0x80 && | |
814 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
815 | struct hci_cp_delete_stored_link_key cp; | |
816 | ||
817 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
818 | cp.delete_all = 0x01; | |
819 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
820 | sizeof(cp), &cp); | |
821 | } | |
822 | ||
d62e6d67 JH |
823 | /* Set event mask page 2 if the HCI command for it is supported */ |
824 | if (hdev->commands[22] & 0x04) | |
825 | hci_set_event_mask_page_2(req); | |
826 | ||
109e3191 MH |
827 | /* Read local codec list if the HCI command is supported */ |
828 | if (hdev->commands[29] & 0x20) | |
829 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
830 | ||
f4fe73ed MH |
831 | /* Get MWS transport configuration if the HCI command is supported */ |
832 | if (hdev->commands[30] & 0x08) | |
833 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
834 | ||
5d4e7e8d | 835 | /* Check for Synchronization Train support */ |
53b834d2 | 836 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 837 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
838 | |
839 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 840 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 841 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 842 | u8 support = 0x01; |
574ea3c7 | 843 | |
a6d0d690 MH |
844 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
845 | sizeof(support), &support); | |
846 | } | |
5d4e7e8d JH |
847 | } |
848 | ||
2177bab5 JH |
849 | static int __hci_init(struct hci_dev *hdev) |
850 | { | |
851 | int err; | |
852 | ||
853 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
854 | if (err < 0) | |
855 | return err; | |
856 | ||
4b4148e9 MH |
857 | /* The Device Under Test (DUT) mode is special and available for |
858 | * all controller types. So just create it early on. | |
859 | */ | |
d7a5a11d | 860 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
4b4148e9 MH |
861 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, |
862 | &dut_mode_fops); | |
863 | } | |
864 | ||
0af801b9 JH |
865 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
866 | if (err < 0) | |
867 | return err; | |
868 | ||
2177bab5 JH |
869 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
870 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 871 | * first two stages of init. |
2177bab5 JH |
872 | */ |
873 | if (hdev->dev_type != HCI_BREDR) | |
874 | return 0; | |
875 | ||
5d4e7e8d JH |
876 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
877 | if (err < 0) | |
878 | return err; | |
879 | ||
baf27f6e MH |
880 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
881 | if (err < 0) | |
882 | return err; | |
883 | ||
ec6cef9c MH |
884 | /* This function is only called when the controller is actually in |
885 | * configured state. When the controller is marked as unconfigured, | |
886 | * this initialization procedure is not run. | |
887 | * | |
888 | * It means that it is possible that a controller runs through its | |
889 | * setup phase and then discovers missing settings. If that is the | |
890 | * case, then this function will not be called. It then will only | |
891 | * be called during the config phase. | |
892 | * | |
893 | * So only when in setup phase or config phase, create the debugfs | |
894 | * entries and register the SMP channels. | |
baf27f6e | 895 | */ |
d7a5a11d MH |
896 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
897 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
898 | return 0; |
899 | ||
60c5f5fb MH |
900 | hci_debugfs_create_common(hdev); |
901 | ||
71c3b60e | 902 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 903 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 904 | |
162a3bac | 905 | if (lmp_le_capable(hdev)) |
60c5f5fb | 906 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 907 | |
baf27f6e | 908 | return 0; |
2177bab5 JH |
909 | } |
910 | ||
0ebca7d6 MH |
911 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
912 | { | |
913 | struct hci_dev *hdev = req->hdev; | |
914 | ||
915 | BT_DBG("%s %ld", hdev->name, opt); | |
916 | ||
917 | /* Reset */ | |
918 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
919 | hci_reset_req(req, 0); | |
920 | ||
921 | /* Read Local Version */ | |
922 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
923 | ||
924 | /* Read BD Address */ | |
925 | if (hdev->set_bdaddr) | |
926 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
927 | } | |
928 | ||
929 | static int __hci_unconf_init(struct hci_dev *hdev) | |
930 | { | |
931 | int err; | |
932 | ||
cc78b44b MH |
933 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
934 | return 0; | |
935 | ||
0ebca7d6 MH |
936 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
937 | if (err < 0) | |
938 | return err; | |
939 | ||
940 | return 0; | |
941 | } | |
942 | ||
42c6b129 | 943 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
944 | { |
945 | __u8 scan = opt; | |
946 | ||
42c6b129 | 947 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
948 | |
949 | /* Inquiry and Page scans */ | |
42c6b129 | 950 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
951 | } |
952 | ||
42c6b129 | 953 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
954 | { |
955 | __u8 auth = opt; | |
956 | ||
42c6b129 | 957 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
958 | |
959 | /* Authentication */ | |
42c6b129 | 960 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
961 | } |
962 | ||
42c6b129 | 963 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
964 | { |
965 | __u8 encrypt = opt; | |
966 | ||
42c6b129 | 967 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 968 | |
e4e8e37c | 969 | /* Encryption */ |
42c6b129 | 970 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
971 | } |
972 | ||
42c6b129 | 973 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
974 | { |
975 | __le16 policy = cpu_to_le16(opt); | |
976 | ||
42c6b129 | 977 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
978 | |
979 | /* Default link policy */ | |
42c6b129 | 980 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
981 | } |
982 | ||
8e87d142 | 983 | /* Get HCI device by index. |
1da177e4 LT |
984 | * Device is held on return. */ |
985 | struct hci_dev *hci_dev_get(int index) | |
986 | { | |
8035ded4 | 987 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
988 | |
989 | BT_DBG("%d", index); | |
990 | ||
991 | if (index < 0) | |
992 | return NULL; | |
993 | ||
994 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 995 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
996 | if (d->id == index) { |
997 | hdev = hci_dev_hold(d); | |
998 | break; | |
999 | } | |
1000 | } | |
1001 | read_unlock(&hci_dev_list_lock); | |
1002 | return hdev; | |
1003 | } | |
1da177e4 LT |
1004 | |
1005 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1006 | |
30dc78e1 JH |
1007 | bool hci_discovery_active(struct hci_dev *hdev) |
1008 | { | |
1009 | struct discovery_state *discov = &hdev->discovery; | |
1010 | ||
6fbe195d | 1011 | switch (discov->state) { |
343f935b | 1012 | case DISCOVERY_FINDING: |
6fbe195d | 1013 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1014 | return true; |
1015 | ||
6fbe195d AG |
1016 | default: |
1017 | return false; | |
1018 | } | |
30dc78e1 JH |
1019 | } |
1020 | ||
ff9ef578 JH |
1021 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1022 | { | |
bb3e0a33 JH |
1023 | int old_state = hdev->discovery.state; |
1024 | ||
ff9ef578 JH |
1025 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1026 | ||
bb3e0a33 | 1027 | if (old_state == state) |
ff9ef578 JH |
1028 | return; |
1029 | ||
bb3e0a33 JH |
1030 | hdev->discovery.state = state; |
1031 | ||
ff9ef578 JH |
1032 | switch (state) { |
1033 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1034 | hci_update_background_scan(hdev); |
1035 | ||
bb3e0a33 | 1036 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1037 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1038 | break; |
1039 | case DISCOVERY_STARTING: | |
1040 | break; | |
343f935b | 1041 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1042 | mgmt_discovering(hdev, 1); |
1043 | break; | |
30dc78e1 JH |
1044 | case DISCOVERY_RESOLVING: |
1045 | break; | |
ff9ef578 JH |
1046 | case DISCOVERY_STOPPING: |
1047 | break; | |
1048 | } | |
ff9ef578 JH |
1049 | } |
1050 | ||
1f9b9a5d | 1051 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1052 | { |
30883512 | 1053 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1054 | struct inquiry_entry *p, *n; |
1da177e4 | 1055 | |
561aafbc JH |
1056 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1057 | list_del(&p->all); | |
b57c1a56 | 1058 | kfree(p); |
1da177e4 | 1059 | } |
561aafbc JH |
1060 | |
1061 | INIT_LIST_HEAD(&cache->unknown); | |
1062 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1063 | } |
1064 | ||
a8c5fb1a GP |
1065 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1066 | bdaddr_t *bdaddr) | |
1da177e4 | 1067 | { |
30883512 | 1068 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1069 | struct inquiry_entry *e; |
1070 | ||
6ed93dc6 | 1071 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1072 | |
561aafbc JH |
1073 | list_for_each_entry(e, &cache->all, all) { |
1074 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1075 | return e; | |
1076 | } | |
1077 | ||
1078 | return NULL; | |
1079 | } | |
1080 | ||
1081 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1082 | bdaddr_t *bdaddr) |
561aafbc | 1083 | { |
30883512 | 1084 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1085 | struct inquiry_entry *e; |
1086 | ||
6ed93dc6 | 1087 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1088 | |
1089 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1090 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1091 | return e; |
1092 | } | |
1093 | ||
1094 | return NULL; | |
1da177e4 LT |
1095 | } |
1096 | ||
30dc78e1 | 1097 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1098 | bdaddr_t *bdaddr, |
1099 | int state) | |
30dc78e1 JH |
1100 | { |
1101 | struct discovery_state *cache = &hdev->discovery; | |
1102 | struct inquiry_entry *e; | |
1103 | ||
6ed93dc6 | 1104 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1105 | |
1106 | list_for_each_entry(e, &cache->resolve, list) { | |
1107 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1108 | return e; | |
1109 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1110 | return e; | |
1111 | } | |
1112 | ||
1113 | return NULL; | |
1114 | } | |
1115 | ||
a3d4e20a | 1116 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1117 | struct inquiry_entry *ie) |
a3d4e20a JH |
1118 | { |
1119 | struct discovery_state *cache = &hdev->discovery; | |
1120 | struct list_head *pos = &cache->resolve; | |
1121 | struct inquiry_entry *p; | |
1122 | ||
1123 | list_del(&ie->list); | |
1124 | ||
1125 | list_for_each_entry(p, &cache->resolve, list) { | |
1126 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1127 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1128 | break; |
1129 | pos = &p->list; | |
1130 | } | |
1131 | ||
1132 | list_add(&ie->list, pos); | |
1133 | } | |
1134 | ||
af58925c MH |
1135 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1136 | bool name_known) | |
1da177e4 | 1137 | { |
30883512 | 1138 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1139 | struct inquiry_entry *ie; |
af58925c | 1140 | u32 flags = 0; |
1da177e4 | 1141 | |
6ed93dc6 | 1142 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1143 | |
6928a924 | 1144 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1145 | |
af58925c MH |
1146 | if (!data->ssp_mode) |
1147 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1148 | |
70f23020 | 1149 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1150 | if (ie) { |
af58925c MH |
1151 | if (!ie->data.ssp_mode) |
1152 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1153 | |
a3d4e20a | 1154 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1155 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1156 | ie->data.rssi = data->rssi; |
1157 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1158 | } | |
1159 | ||
561aafbc | 1160 | goto update; |
a3d4e20a | 1161 | } |
561aafbc JH |
1162 | |
1163 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1164 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1165 | if (!ie) { |
1166 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1167 | goto done; | |
1168 | } | |
561aafbc JH |
1169 | |
1170 | list_add(&ie->all, &cache->all); | |
1171 | ||
1172 | if (name_known) { | |
1173 | ie->name_state = NAME_KNOWN; | |
1174 | } else { | |
1175 | ie->name_state = NAME_NOT_KNOWN; | |
1176 | list_add(&ie->list, &cache->unknown); | |
1177 | } | |
70f23020 | 1178 | |
561aafbc JH |
1179 | update: |
1180 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1181 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1182 | ie->name_state = NAME_KNOWN; |
1183 | list_del(&ie->list); | |
1da177e4 LT |
1184 | } |
1185 | ||
70f23020 AE |
1186 | memcpy(&ie->data, data, sizeof(*data)); |
1187 | ie->timestamp = jiffies; | |
1da177e4 | 1188 | cache->timestamp = jiffies; |
3175405b JH |
1189 | |
1190 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1191 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1192 | |
af58925c MH |
1193 | done: |
1194 | return flags; | |
1da177e4 LT |
1195 | } |
1196 | ||
1197 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1198 | { | |
30883512 | 1199 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1200 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1201 | struct inquiry_entry *e; | |
1202 | int copied = 0; | |
1203 | ||
561aafbc | 1204 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1205 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1206 | |
1207 | if (copied >= num) | |
1208 | break; | |
1209 | ||
1da177e4 LT |
1210 | bacpy(&info->bdaddr, &data->bdaddr); |
1211 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1212 | info->pscan_period_mode = data->pscan_period_mode; | |
1213 | info->pscan_mode = data->pscan_mode; | |
1214 | memcpy(info->dev_class, data->dev_class, 3); | |
1215 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1216 | |
1da177e4 | 1217 | info++; |
b57c1a56 | 1218 | copied++; |
1da177e4 LT |
1219 | } |
1220 | ||
1221 | BT_DBG("cache %p, copied %d", cache, copied); | |
1222 | return copied; | |
1223 | } | |
1224 | ||
42c6b129 | 1225 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1226 | { |
1227 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1228 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1229 | struct hci_cp_inquiry cp; |
1230 | ||
1231 | BT_DBG("%s", hdev->name); | |
1232 | ||
1233 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1234 | return; | |
1235 | ||
1236 | /* Start Inquiry */ | |
1237 | memcpy(&cp.lap, &ir->lap, 3); | |
1238 | cp.length = ir->length; | |
1239 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1240 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1241 | } |
1242 | ||
1243 | int hci_inquiry(void __user *arg) | |
1244 | { | |
1245 | __u8 __user *ptr = arg; | |
1246 | struct hci_inquiry_req ir; | |
1247 | struct hci_dev *hdev; | |
1248 | int err = 0, do_inquiry = 0, max_rsp; | |
1249 | long timeo; | |
1250 | __u8 *buf; | |
1251 | ||
1252 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1253 | return -EFAULT; | |
1254 | ||
5a08ecce AE |
1255 | hdev = hci_dev_get(ir.dev_id); |
1256 | if (!hdev) | |
1da177e4 LT |
1257 | return -ENODEV; |
1258 | ||
d7a5a11d | 1259 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1260 | err = -EBUSY; |
1261 | goto done; | |
1262 | } | |
1263 | ||
d7a5a11d | 1264 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1265 | err = -EOPNOTSUPP; |
1266 | goto done; | |
1267 | } | |
1268 | ||
5b69bef5 MH |
1269 | if (hdev->dev_type != HCI_BREDR) { |
1270 | err = -EOPNOTSUPP; | |
1271 | goto done; | |
1272 | } | |
1273 | ||
d7a5a11d | 1274 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1275 | err = -EOPNOTSUPP; |
1276 | goto done; | |
1277 | } | |
1278 | ||
09fd0de5 | 1279 | hci_dev_lock(hdev); |
8e87d142 | 1280 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1281 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1282 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1283 | do_inquiry = 1; |
1284 | } | |
09fd0de5 | 1285 | hci_dev_unlock(hdev); |
1da177e4 | 1286 | |
04837f64 | 1287 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1288 | |
1289 | if (do_inquiry) { | |
01178cd4 JH |
1290 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1291 | timeo); | |
70f23020 AE |
1292 | if (err < 0) |
1293 | goto done; | |
3e13fa1e AG |
1294 | |
1295 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1296 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1297 | */ | |
74316201 | 1298 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1299 | TASK_INTERRUPTIBLE)) |
1300 | return -EINTR; | |
70f23020 | 1301 | } |
1da177e4 | 1302 | |
8fc9ced3 GP |
1303 | /* for unlimited number of responses we will use buffer with |
1304 | * 255 entries | |
1305 | */ | |
1da177e4 LT |
1306 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1307 | ||
1308 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1309 | * copy it to the user space. | |
1310 | */ | |
01df8c31 | 1311 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1312 | if (!buf) { |
1da177e4 LT |
1313 | err = -ENOMEM; |
1314 | goto done; | |
1315 | } | |
1316 | ||
09fd0de5 | 1317 | hci_dev_lock(hdev); |
1da177e4 | 1318 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1319 | hci_dev_unlock(hdev); |
1da177e4 LT |
1320 | |
1321 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1322 | ||
1323 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1324 | ptr += sizeof(ir); | |
1325 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1326 | ir.num_rsp)) |
1da177e4 | 1327 | err = -EFAULT; |
8e87d142 | 1328 | } else |
1da177e4 LT |
1329 | err = -EFAULT; |
1330 | ||
1331 | kfree(buf); | |
1332 | ||
1333 | done: | |
1334 | hci_dev_put(hdev); | |
1335 | return err; | |
1336 | } | |
1337 | ||
cbed0ca1 | 1338 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1339 | { |
1da177e4 LT |
1340 | int ret = 0; |
1341 | ||
1da177e4 LT |
1342 | BT_DBG("%s %p", hdev->name, hdev); |
1343 | ||
1344 | hci_req_lock(hdev); | |
1345 | ||
d7a5a11d | 1346 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1347 | ret = -ENODEV; |
1348 | goto done; | |
1349 | } | |
1350 | ||
d7a5a11d MH |
1351 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1352 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1353 | /* Check for rfkill but allow the HCI setup stage to |
1354 | * proceed (which in itself doesn't cause any RF activity). | |
1355 | */ | |
d7a5a11d | 1356 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1357 | ret = -ERFKILL; |
1358 | goto done; | |
1359 | } | |
1360 | ||
1361 | /* Check for valid public address or a configured static | |
1362 | * random adddress, but let the HCI setup proceed to | |
1363 | * be able to determine if there is a public address | |
1364 | * or not. | |
1365 | * | |
c6beca0e MH |
1366 | * In case of user channel usage, it is not important |
1367 | * if a public address or static random address is | |
1368 | * available. | |
1369 | * | |
a5c8f270 MH |
1370 | * This check is only valid for BR/EDR controllers |
1371 | * since AMP controllers do not have an address. | |
1372 | */ | |
d7a5a11d | 1373 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1374 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1375 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1376 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1377 | ret = -EADDRNOTAVAIL; | |
1378 | goto done; | |
1379 | } | |
611b30f7 MH |
1380 | } |
1381 | ||
1da177e4 LT |
1382 | if (test_bit(HCI_UP, &hdev->flags)) { |
1383 | ret = -EALREADY; | |
1384 | goto done; | |
1385 | } | |
1386 | ||
1da177e4 LT |
1387 | if (hdev->open(hdev)) { |
1388 | ret = -EIO; | |
1389 | goto done; | |
1390 | } | |
1391 | ||
f41c70c4 MH |
1392 | atomic_set(&hdev->cmd_cnt, 1); |
1393 | set_bit(HCI_INIT, &hdev->flags); | |
1394 | ||
d7a5a11d | 1395 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
af202f84 MH |
1396 | if (hdev->setup) |
1397 | ret = hdev->setup(hdev); | |
f41c70c4 | 1398 | |
af202f84 MH |
1399 | /* The transport driver can set these quirks before |
1400 | * creating the HCI device or in its setup callback. | |
1401 | * | |
1402 | * In case any of them is set, the controller has to | |
1403 | * start up as unconfigured. | |
1404 | */ | |
eb1904f4 MH |
1405 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1406 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1407 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1408 | |
0ebca7d6 MH |
1409 | /* For an unconfigured controller it is required to |
1410 | * read at least the version information provided by | |
1411 | * the Read Local Version Information command. | |
1412 | * | |
1413 | * If the set_bdaddr driver callback is provided, then | |
1414 | * also the original Bluetooth public device address | |
1415 | * will be read using the Read BD Address command. | |
1416 | */ | |
d7a5a11d | 1417 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1418 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1419 | } |
1420 | ||
d7a5a11d | 1421 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1422 | /* If public address change is configured, ensure that |
1423 | * the address gets programmed. If the driver does not | |
1424 | * support changing the public address, fail the power | |
1425 | * on procedure. | |
1426 | */ | |
1427 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1428 | hdev->set_bdaddr) | |
24c457e2 MH |
1429 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1430 | else | |
1431 | ret = -EADDRNOTAVAIL; | |
1432 | } | |
1433 | ||
f41c70c4 | 1434 | if (!ret) { |
d7a5a11d MH |
1435 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1436 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
f41c70c4 | 1437 | ret = __hci_init(hdev); |
1da177e4 LT |
1438 | } |
1439 | ||
f41c70c4 MH |
1440 | clear_bit(HCI_INIT, &hdev->flags); |
1441 | ||
1da177e4 LT |
1442 | if (!ret) { |
1443 | hci_dev_hold(hdev); | |
a1536da2 | 1444 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 LT |
1445 | set_bit(HCI_UP, &hdev->flags); |
1446 | hci_notify(hdev, HCI_DEV_UP); | |
d7a5a11d MH |
1447 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1448 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1449 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1450 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1514b892 | 1451 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1452 | hci_dev_lock(hdev); |
744cf19e | 1453 | mgmt_powered(hdev, 1); |
09fd0de5 | 1454 | hci_dev_unlock(hdev); |
56e5cb86 | 1455 | } |
8e87d142 | 1456 | } else { |
1da177e4 | 1457 | /* Init failed, cleanup */ |
3eff45ea | 1458 | flush_work(&hdev->tx_work); |
c347b765 | 1459 | flush_work(&hdev->cmd_work); |
b78752cc | 1460 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1461 | |
1462 | skb_queue_purge(&hdev->cmd_q); | |
1463 | skb_queue_purge(&hdev->rx_q); | |
1464 | ||
1465 | if (hdev->flush) | |
1466 | hdev->flush(hdev); | |
1467 | ||
1468 | if (hdev->sent_cmd) { | |
1469 | kfree_skb(hdev->sent_cmd); | |
1470 | hdev->sent_cmd = NULL; | |
1471 | } | |
1472 | ||
1473 | hdev->close(hdev); | |
fee746b0 | 1474 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1475 | } |
1476 | ||
1477 | done: | |
1478 | hci_req_unlock(hdev); | |
1da177e4 LT |
1479 | return ret; |
1480 | } | |
1481 | ||
cbed0ca1 JH |
1482 | /* ---- HCI ioctl helpers ---- */ |
1483 | ||
1484 | int hci_dev_open(__u16 dev) | |
1485 | { | |
1486 | struct hci_dev *hdev; | |
1487 | int err; | |
1488 | ||
1489 | hdev = hci_dev_get(dev); | |
1490 | if (!hdev) | |
1491 | return -ENODEV; | |
1492 | ||
4a964404 | 1493 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1494 | * up as user channel. Trying to bring them up as normal devices |
1495 | * will result into a failure. Only user channel operation is | |
1496 | * possible. | |
1497 | * | |
1498 | * When this function is called for a user channel, the flag | |
1499 | * HCI_USER_CHANNEL will be set first before attempting to | |
1500 | * open the device. | |
1501 | */ | |
d7a5a11d MH |
1502 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1503 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1504 | err = -EOPNOTSUPP; |
1505 | goto done; | |
1506 | } | |
1507 | ||
e1d08f40 JH |
1508 | /* We need to ensure that no other power on/off work is pending |
1509 | * before proceeding to call hci_dev_do_open. This is | |
1510 | * particularly important if the setup procedure has not yet | |
1511 | * completed. | |
1512 | */ | |
a69d8927 | 1513 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1514 | cancel_delayed_work(&hdev->power_off); |
1515 | ||
a5c8f270 MH |
1516 | /* After this call it is guaranteed that the setup procedure |
1517 | * has finished. This means that error conditions like RFKILL | |
1518 | * or no valid public or static random address apply. | |
1519 | */ | |
e1d08f40 JH |
1520 | flush_workqueue(hdev->req_workqueue); |
1521 | ||
12aa4f0a | 1522 | /* For controllers not using the management interface and that |
b6ae8457 | 1523 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1524 | * so that pairing works for them. Once the management interface |
1525 | * is in use this bit will be cleared again and userspace has | |
1526 | * to explicitly enable it. | |
1527 | */ | |
d7a5a11d MH |
1528 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1529 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1530 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1531 | |
cbed0ca1 JH |
1532 | err = hci_dev_do_open(hdev); |
1533 | ||
fee746b0 | 1534 | done: |
cbed0ca1 | 1535 | hci_dev_put(hdev); |
cbed0ca1 JH |
1536 | return err; |
1537 | } | |
1538 | ||
d7347f3c JH |
1539 | /* This function requires the caller holds hdev->lock */ |
1540 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1541 | { | |
1542 | struct hci_conn_params *p; | |
1543 | ||
f161dd41 JH |
1544 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1545 | if (p->conn) { | |
1546 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1547 | hci_conn_put(p->conn); |
f161dd41 JH |
1548 | p->conn = NULL; |
1549 | } | |
d7347f3c | 1550 | list_del_init(&p->action); |
f161dd41 | 1551 | } |
d7347f3c JH |
1552 | |
1553 | BT_DBG("All LE pending actions cleared"); | |
1554 | } | |
1555 | ||
1da177e4 LT |
1556 | static int hci_dev_do_close(struct hci_dev *hdev) |
1557 | { | |
1558 | BT_DBG("%s %p", hdev->name, hdev); | |
1559 | ||
d7a5a11d | 1560 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
a44fecbd THJA |
1561 | /* Execute vendor specific shutdown routine */ |
1562 | if (hdev->shutdown) | |
1563 | hdev->shutdown(hdev); | |
1564 | } | |
1565 | ||
78c04c0b VCG |
1566 | cancel_delayed_work(&hdev->power_off); |
1567 | ||
1da177e4 LT |
1568 | hci_req_cancel(hdev, ENODEV); |
1569 | hci_req_lock(hdev); | |
1570 | ||
1571 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1572 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1573 | hci_req_unlock(hdev); |
1574 | return 0; | |
1575 | } | |
1576 | ||
3eff45ea GP |
1577 | /* Flush RX and TX works */ |
1578 | flush_work(&hdev->tx_work); | |
b78752cc | 1579 | flush_work(&hdev->rx_work); |
1da177e4 | 1580 | |
16ab91ab | 1581 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1582 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1583 | hdev->discov_timeout = 0; |
a358dc11 MH |
1584 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1585 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1586 | } |
1587 | ||
a69d8927 | 1588 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1589 | cancel_delayed_work(&hdev->service_cache); |
1590 | ||
7ba8b4be | 1591 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2d28cfe7 | 1592 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
4518bb0f | 1593 | |
d7a5a11d | 1594 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1595 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1596 | |
76727c02 JH |
1597 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1598 | * ensuring the workqueue is empty up front. | |
1599 | */ | |
1600 | drain_workqueue(hdev->workqueue); | |
1601 | ||
09fd0de5 | 1602 | hci_dev_lock(hdev); |
1aeb9c65 | 1603 | |
8f502f84 JH |
1604 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1605 | ||
a69d8927 | 1606 | if (!hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { |
1aeb9c65 JH |
1607 | if (hdev->dev_type == HCI_BREDR) |
1608 | mgmt_powered(hdev, 0); | |
1609 | } | |
1610 | ||
1f9b9a5d | 1611 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1612 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1613 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1614 | hci_dev_unlock(hdev); |
1da177e4 | 1615 | |
64dae967 MH |
1616 | smp_unregister(hdev); |
1617 | ||
1da177e4 LT |
1618 | hci_notify(hdev, HCI_DEV_DOWN); |
1619 | ||
1620 | if (hdev->flush) | |
1621 | hdev->flush(hdev); | |
1622 | ||
1623 | /* Reset device */ | |
1624 | skb_queue_purge(&hdev->cmd_q); | |
1625 | atomic_set(&hdev->cmd_cnt, 1); | |
d7a5a11d MH |
1626 | if (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && |
1627 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
a6c511c6 | 1628 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1629 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1630 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1631 | clear_bit(HCI_INIT, &hdev->flags); |
1632 | } | |
1633 | ||
c347b765 GP |
1634 | /* flush cmd work */ |
1635 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1636 | |
1637 | /* Drop queues */ | |
1638 | skb_queue_purge(&hdev->rx_q); | |
1639 | skb_queue_purge(&hdev->cmd_q); | |
1640 | skb_queue_purge(&hdev->raw_q); | |
1641 | ||
1642 | /* Drop last sent command */ | |
1643 | if (hdev->sent_cmd) { | |
65cc2b49 | 1644 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1645 | kfree_skb(hdev->sent_cmd); |
1646 | hdev->sent_cmd = NULL; | |
1647 | } | |
1648 | ||
1649 | /* After this point our queues are empty | |
1650 | * and no tasks are scheduled. */ | |
1651 | hdev->close(hdev); | |
1652 | ||
35b973c9 | 1653 | /* Clear flags */ |
fee746b0 | 1654 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1655 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1656 | |
ced5c338 | 1657 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1658 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1659 | |
e59fda8d | 1660 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1661 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1662 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1663 | |
1da177e4 LT |
1664 | hci_req_unlock(hdev); |
1665 | ||
1666 | hci_dev_put(hdev); | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | int hci_dev_close(__u16 dev) | |
1671 | { | |
1672 | struct hci_dev *hdev; | |
1673 | int err; | |
1674 | ||
70f23020 AE |
1675 | hdev = hci_dev_get(dev); |
1676 | if (!hdev) | |
1da177e4 | 1677 | return -ENODEV; |
8ee56540 | 1678 | |
d7a5a11d | 1679 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1680 | err = -EBUSY; |
1681 | goto done; | |
1682 | } | |
1683 | ||
a69d8927 | 1684 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1685 | cancel_delayed_work(&hdev->power_off); |
1686 | ||
1da177e4 | 1687 | err = hci_dev_do_close(hdev); |
8ee56540 | 1688 | |
0736cfa8 | 1689 | done: |
1da177e4 LT |
1690 | hci_dev_put(hdev); |
1691 | return err; | |
1692 | } | |
1693 | ||
5c912495 | 1694 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1695 | { |
5c912495 | 1696 | int ret; |
1da177e4 | 1697 | |
5c912495 | 1698 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1699 | |
1700 | hci_req_lock(hdev); | |
1da177e4 | 1701 | |
1da177e4 LT |
1702 | /* Drop queues */ |
1703 | skb_queue_purge(&hdev->rx_q); | |
1704 | skb_queue_purge(&hdev->cmd_q); | |
1705 | ||
76727c02 JH |
1706 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1707 | * ensuring the workqueue is empty up front. | |
1708 | */ | |
1709 | drain_workqueue(hdev->workqueue); | |
1710 | ||
09fd0de5 | 1711 | hci_dev_lock(hdev); |
1f9b9a5d | 1712 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1713 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1714 | hci_dev_unlock(hdev); |
1da177e4 LT |
1715 | |
1716 | if (hdev->flush) | |
1717 | hdev->flush(hdev); | |
1718 | ||
8e87d142 | 1719 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1720 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1721 | |
fee746b0 | 1722 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1723 | |
1da177e4 | 1724 | hci_req_unlock(hdev); |
1da177e4 LT |
1725 | return ret; |
1726 | } | |
1727 | ||
5c912495 MH |
1728 | int hci_dev_reset(__u16 dev) |
1729 | { | |
1730 | struct hci_dev *hdev; | |
1731 | int err; | |
1732 | ||
1733 | hdev = hci_dev_get(dev); | |
1734 | if (!hdev) | |
1735 | return -ENODEV; | |
1736 | ||
1737 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1738 | err = -ENETDOWN; | |
1739 | goto done; | |
1740 | } | |
1741 | ||
d7a5a11d | 1742 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1743 | err = -EBUSY; |
1744 | goto done; | |
1745 | } | |
1746 | ||
d7a5a11d | 1747 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1748 | err = -EOPNOTSUPP; |
1749 | goto done; | |
1750 | } | |
1751 | ||
1752 | err = hci_dev_do_reset(hdev); | |
1753 | ||
1754 | done: | |
1755 | hci_dev_put(hdev); | |
1756 | return err; | |
1757 | } | |
1758 | ||
1da177e4 LT |
1759 | int hci_dev_reset_stat(__u16 dev) |
1760 | { | |
1761 | struct hci_dev *hdev; | |
1762 | int ret = 0; | |
1763 | ||
70f23020 AE |
1764 | hdev = hci_dev_get(dev); |
1765 | if (!hdev) | |
1da177e4 LT |
1766 | return -ENODEV; |
1767 | ||
d7a5a11d | 1768 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1769 | ret = -EBUSY; |
1770 | goto done; | |
1771 | } | |
1772 | ||
d7a5a11d | 1773 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1774 | ret = -EOPNOTSUPP; |
1775 | goto done; | |
1776 | } | |
1777 | ||
1da177e4 LT |
1778 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1779 | ||
0736cfa8 | 1780 | done: |
1da177e4 | 1781 | hci_dev_put(hdev); |
1da177e4 LT |
1782 | return ret; |
1783 | } | |
1784 | ||
123abc08 JH |
1785 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1786 | { | |
bc6d2d04 | 1787 | bool conn_changed, discov_changed; |
123abc08 JH |
1788 | |
1789 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1790 | ||
1791 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1792 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1793 | HCI_CONNECTABLE); | |
123abc08 | 1794 | else |
a69d8927 MH |
1795 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1796 | HCI_CONNECTABLE); | |
123abc08 | 1797 | |
bc6d2d04 | 1798 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1799 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1800 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1801 | } else { |
a358dc11 | 1802 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1803 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1804 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1805 | } |
1806 | ||
d7a5a11d | 1807 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1808 | return; |
1809 | ||
bc6d2d04 JH |
1810 | if (conn_changed || discov_changed) { |
1811 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1812 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1813 | |
d7a5a11d | 1814 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
bc6d2d04 JH |
1815 | mgmt_update_adv_data(hdev); |
1816 | ||
123abc08 | 1817 | mgmt_new_settings(hdev); |
bc6d2d04 | 1818 | } |
123abc08 JH |
1819 | } |
1820 | ||
1da177e4 LT |
1821 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1822 | { | |
1823 | struct hci_dev *hdev; | |
1824 | struct hci_dev_req dr; | |
1825 | int err = 0; | |
1826 | ||
1827 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1828 | return -EFAULT; | |
1829 | ||
70f23020 AE |
1830 | hdev = hci_dev_get(dr.dev_id); |
1831 | if (!hdev) | |
1da177e4 LT |
1832 | return -ENODEV; |
1833 | ||
d7a5a11d | 1834 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1835 | err = -EBUSY; |
1836 | goto done; | |
1837 | } | |
1838 | ||
d7a5a11d | 1839 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1840 | err = -EOPNOTSUPP; |
1841 | goto done; | |
1842 | } | |
1843 | ||
5b69bef5 MH |
1844 | if (hdev->dev_type != HCI_BREDR) { |
1845 | err = -EOPNOTSUPP; | |
1846 | goto done; | |
1847 | } | |
1848 | ||
d7a5a11d | 1849 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1850 | err = -EOPNOTSUPP; |
1851 | goto done; | |
1852 | } | |
1853 | ||
1da177e4 LT |
1854 | switch (cmd) { |
1855 | case HCISETAUTH: | |
01178cd4 JH |
1856 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1857 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1858 | break; |
1859 | ||
1860 | case HCISETENCRYPT: | |
1861 | if (!lmp_encrypt_capable(hdev)) { | |
1862 | err = -EOPNOTSUPP; | |
1863 | break; | |
1864 | } | |
1865 | ||
1866 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1867 | /* Auth must be enabled first */ | |
01178cd4 JH |
1868 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1869 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1870 | if (err) |
1871 | break; | |
1872 | } | |
1873 | ||
01178cd4 JH |
1874 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1875 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1876 | break; |
1877 | ||
1878 | case HCISETSCAN: | |
01178cd4 JH |
1879 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1880 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1881 | |
bc6d2d04 JH |
1882 | /* Ensure that the connectable and discoverable states |
1883 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1884 | */ |
123abc08 JH |
1885 | if (!err) |
1886 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1887 | break; |
1888 | ||
1da177e4 | 1889 | case HCISETLINKPOL: |
01178cd4 JH |
1890 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1891 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1892 | break; |
1893 | ||
1894 | case HCISETLINKMODE: | |
e4e8e37c MH |
1895 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1896 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1897 | break; | |
1898 | ||
1899 | case HCISETPTYPE: | |
1900 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1901 | break; |
1902 | ||
1903 | case HCISETACLMTU: | |
e4e8e37c MH |
1904 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1905 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1906 | break; |
1907 | ||
1908 | case HCISETSCOMTU: | |
e4e8e37c MH |
1909 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1910 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1911 | break; |
1912 | ||
1913 | default: | |
1914 | err = -EINVAL; | |
1915 | break; | |
1916 | } | |
e4e8e37c | 1917 | |
0736cfa8 | 1918 | done: |
1da177e4 LT |
1919 | hci_dev_put(hdev); |
1920 | return err; | |
1921 | } | |
1922 | ||
1923 | int hci_get_dev_list(void __user *arg) | |
1924 | { | |
8035ded4 | 1925 | struct hci_dev *hdev; |
1da177e4 LT |
1926 | struct hci_dev_list_req *dl; |
1927 | struct hci_dev_req *dr; | |
1da177e4 LT |
1928 | int n = 0, size, err; |
1929 | __u16 dev_num; | |
1930 | ||
1931 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1932 | return -EFAULT; | |
1933 | ||
1934 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1935 | return -EINVAL; | |
1936 | ||
1937 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1938 | ||
70f23020 AE |
1939 | dl = kzalloc(size, GFP_KERNEL); |
1940 | if (!dl) | |
1da177e4 LT |
1941 | return -ENOMEM; |
1942 | ||
1943 | dr = dl->dev_req; | |
1944 | ||
f20d09d5 | 1945 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1946 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1947 | unsigned long flags = hdev->flags; |
c542a06c | 1948 | |
2e84d8db MH |
1949 | /* When the auto-off is configured it means the transport |
1950 | * is running, but in that case still indicate that the | |
1951 | * device is actually down. | |
1952 | */ | |
d7a5a11d | 1953 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1954 | flags &= ~BIT(HCI_UP); |
c542a06c | 1955 | |
1da177e4 | 1956 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1957 | (dr + n)->dev_opt = flags; |
c542a06c | 1958 | |
1da177e4 LT |
1959 | if (++n >= dev_num) |
1960 | break; | |
1961 | } | |
f20d09d5 | 1962 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1963 | |
1964 | dl->dev_num = n; | |
1965 | size = sizeof(*dl) + n * sizeof(*dr); | |
1966 | ||
1967 | err = copy_to_user(arg, dl, size); | |
1968 | kfree(dl); | |
1969 | ||
1970 | return err ? -EFAULT : 0; | |
1971 | } | |
1972 | ||
1973 | int hci_get_dev_info(void __user *arg) | |
1974 | { | |
1975 | struct hci_dev *hdev; | |
1976 | struct hci_dev_info di; | |
2e84d8db | 1977 | unsigned long flags; |
1da177e4 LT |
1978 | int err = 0; |
1979 | ||
1980 | if (copy_from_user(&di, arg, sizeof(di))) | |
1981 | return -EFAULT; | |
1982 | ||
70f23020 AE |
1983 | hdev = hci_dev_get(di.dev_id); |
1984 | if (!hdev) | |
1da177e4 LT |
1985 | return -ENODEV; |
1986 | ||
2e84d8db MH |
1987 | /* When the auto-off is configured it means the transport |
1988 | * is running, but in that case still indicate that the | |
1989 | * device is actually down. | |
1990 | */ | |
d7a5a11d | 1991 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1992 | flags = hdev->flags & ~BIT(HCI_UP); |
1993 | else | |
1994 | flags = hdev->flags; | |
c542a06c | 1995 | |
1da177e4 LT |
1996 | strcpy(di.name, hdev->name); |
1997 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1998 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 1999 | di.flags = flags; |
1da177e4 | 2000 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2001 | if (lmp_bredr_capable(hdev)) { |
2002 | di.acl_mtu = hdev->acl_mtu; | |
2003 | di.acl_pkts = hdev->acl_pkts; | |
2004 | di.sco_mtu = hdev->sco_mtu; | |
2005 | di.sco_pkts = hdev->sco_pkts; | |
2006 | } else { | |
2007 | di.acl_mtu = hdev->le_mtu; | |
2008 | di.acl_pkts = hdev->le_pkts; | |
2009 | di.sco_mtu = 0; | |
2010 | di.sco_pkts = 0; | |
2011 | } | |
1da177e4 LT |
2012 | di.link_policy = hdev->link_policy; |
2013 | di.link_mode = hdev->link_mode; | |
2014 | ||
2015 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2016 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2017 | ||
2018 | if (copy_to_user(arg, &di, sizeof(di))) | |
2019 | err = -EFAULT; | |
2020 | ||
2021 | hci_dev_put(hdev); | |
2022 | ||
2023 | return err; | |
2024 | } | |
2025 | ||
2026 | /* ---- Interface to HCI drivers ---- */ | |
2027 | ||
611b30f7 MH |
2028 | static int hci_rfkill_set_block(void *data, bool blocked) |
2029 | { | |
2030 | struct hci_dev *hdev = data; | |
2031 | ||
2032 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2033 | ||
d7a5a11d | 2034 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2035 | return -EBUSY; |
2036 | ||
5e130367 | 2037 | if (blocked) { |
a1536da2 | 2038 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2039 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2040 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2041 | hci_dev_do_close(hdev); |
5e130367 | 2042 | } else { |
a358dc11 | 2043 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2044 | } |
611b30f7 MH |
2045 | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | static const struct rfkill_ops hci_rfkill_ops = { | |
2050 | .set_block = hci_rfkill_set_block, | |
2051 | }; | |
2052 | ||
ab81cbf9 JH |
2053 | static void hci_power_on(struct work_struct *work) |
2054 | { | |
2055 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2056 | int err; |
ab81cbf9 JH |
2057 | |
2058 | BT_DBG("%s", hdev->name); | |
2059 | ||
cbed0ca1 | 2060 | err = hci_dev_do_open(hdev); |
96570ffc | 2061 | if (err < 0) { |
3ad67582 | 2062 | hci_dev_lock(hdev); |
96570ffc | 2063 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2064 | hci_dev_unlock(hdev); |
ab81cbf9 | 2065 | return; |
96570ffc | 2066 | } |
ab81cbf9 | 2067 | |
a5c8f270 MH |
2068 | /* During the HCI setup phase, a few error conditions are |
2069 | * ignored and they need to be checked now. If they are still | |
2070 | * valid, it is important to turn the device back off. | |
2071 | */ | |
d7a5a11d MH |
2072 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2073 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2074 | (hdev->dev_type == HCI_BREDR && |
2075 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2076 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2077 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2078 | hci_dev_do_close(hdev); |
d7a5a11d | 2079 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2080 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2081 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2082 | } |
ab81cbf9 | 2083 | |
a69d8927 | 2084 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2085 | /* For unconfigured devices, set the HCI_RAW flag |
2086 | * so that userspace can easily identify them. | |
4a964404 | 2087 | */ |
d7a5a11d | 2088 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2089 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2090 | |
2091 | /* For fully configured devices, this will send | |
2092 | * the Index Added event. For unconfigured devices, | |
2093 | * it will send Unconfigued Index Added event. | |
2094 | * | |
2095 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2096 | * and no event will be send. | |
2097 | */ | |
2098 | mgmt_index_added(hdev); | |
a69d8927 | 2099 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2100 | /* When the controller is now configured, then it |
2101 | * is important to clear the HCI_RAW flag. | |
2102 | */ | |
d7a5a11d | 2103 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2104 | clear_bit(HCI_RAW, &hdev->flags); |
2105 | ||
d603b76b MH |
2106 | /* Powering on the controller with HCI_CONFIG set only |
2107 | * happens with the transition from unconfigured to | |
2108 | * configured. This will send the Index Added event. | |
2109 | */ | |
744cf19e | 2110 | mgmt_index_added(hdev); |
fee746b0 | 2111 | } |
ab81cbf9 JH |
2112 | } |
2113 | ||
2114 | static void hci_power_off(struct work_struct *work) | |
2115 | { | |
3243553f | 2116 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2117 | power_off.work); |
ab81cbf9 JH |
2118 | |
2119 | BT_DBG("%s", hdev->name); | |
2120 | ||
8ee56540 | 2121 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2122 | } |
2123 | ||
c7741d16 MH |
2124 | static void hci_error_reset(struct work_struct *work) |
2125 | { | |
2126 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2127 | ||
2128 | BT_DBG("%s", hdev->name); | |
2129 | ||
2130 | if (hdev->hw_error) | |
2131 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2132 | else | |
2133 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2134 | hdev->hw_error_code); | |
2135 | ||
2136 | if (hci_dev_do_close(hdev)) | |
2137 | return; | |
2138 | ||
c7741d16 MH |
2139 | hci_dev_do_open(hdev); |
2140 | } | |
2141 | ||
16ab91ab JH |
2142 | static void hci_discov_off(struct work_struct *work) |
2143 | { | |
2144 | struct hci_dev *hdev; | |
16ab91ab JH |
2145 | |
2146 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2147 | ||
2148 | BT_DBG("%s", hdev->name); | |
2149 | ||
d1967ff8 | 2150 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2151 | } |
2152 | ||
35f7498a | 2153 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2154 | { |
4821002c | 2155 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2156 | |
4821002c JH |
2157 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2158 | list_del(&uuid->list); | |
2aeb9a1a JH |
2159 | kfree(uuid); |
2160 | } | |
2aeb9a1a JH |
2161 | } |
2162 | ||
35f7498a | 2163 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2164 | { |
0378b597 | 2165 | struct link_key *key; |
55ed8ca1 | 2166 | |
0378b597 JH |
2167 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2168 | list_del_rcu(&key->list); | |
2169 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2170 | } |
55ed8ca1 JH |
2171 | } |
2172 | ||
35f7498a | 2173 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2174 | { |
970d0f1b | 2175 | struct smp_ltk *k; |
b899efaf | 2176 | |
970d0f1b JH |
2177 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2178 | list_del_rcu(&k->list); | |
2179 | kfree_rcu(k, rcu); | |
b899efaf | 2180 | } |
b899efaf VCG |
2181 | } |
2182 | ||
970c4e46 JH |
2183 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2184 | { | |
adae20cb | 2185 | struct smp_irk *k; |
970c4e46 | 2186 | |
adae20cb JH |
2187 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2188 | list_del_rcu(&k->list); | |
2189 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2190 | } |
2191 | } | |
2192 | ||
55ed8ca1 JH |
2193 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2194 | { | |
8035ded4 | 2195 | struct link_key *k; |
55ed8ca1 | 2196 | |
0378b597 JH |
2197 | rcu_read_lock(); |
2198 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2199 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2200 | rcu_read_unlock(); | |
55ed8ca1 | 2201 | return k; |
0378b597 JH |
2202 | } |
2203 | } | |
2204 | rcu_read_unlock(); | |
55ed8ca1 JH |
2205 | |
2206 | return NULL; | |
2207 | } | |
2208 | ||
745c0ce3 | 2209 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2210 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2211 | { |
2212 | /* Legacy key */ | |
2213 | if (key_type < 0x03) | |
745c0ce3 | 2214 | return true; |
d25e28ab JH |
2215 | |
2216 | /* Debug keys are insecure so don't store them persistently */ | |
2217 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2218 | return false; |
d25e28ab JH |
2219 | |
2220 | /* Changed combination key and there's no previous one */ | |
2221 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2222 | return false; |
d25e28ab JH |
2223 | |
2224 | /* Security mode 3 case */ | |
2225 | if (!conn) | |
745c0ce3 | 2226 | return true; |
d25e28ab | 2227 | |
e3befab9 JH |
2228 | /* BR/EDR key derived using SC from an LE link */ |
2229 | if (conn->type == LE_LINK) | |
2230 | return true; | |
2231 | ||
d25e28ab JH |
2232 | /* Neither local nor remote side had no-bonding as requirement */ |
2233 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2234 | return true; |
d25e28ab JH |
2235 | |
2236 | /* Local side had dedicated bonding as requirement */ | |
2237 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2238 | return true; |
d25e28ab JH |
2239 | |
2240 | /* Remote side had dedicated bonding as requirement */ | |
2241 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2242 | return true; |
d25e28ab JH |
2243 | |
2244 | /* If none of the above criteria match, then don't store the key | |
2245 | * persistently */ | |
745c0ce3 | 2246 | return false; |
d25e28ab JH |
2247 | } |
2248 | ||
e804d25d | 2249 | static u8 ltk_role(u8 type) |
98a0b845 | 2250 | { |
e804d25d JH |
2251 | if (type == SMP_LTK) |
2252 | return HCI_ROLE_MASTER; | |
98a0b845 | 2253 | |
e804d25d | 2254 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2255 | } |
2256 | ||
f3a73d97 JH |
2257 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2258 | u8 addr_type, u8 role) | |
75d262c2 | 2259 | { |
c9839a11 | 2260 | struct smp_ltk *k; |
75d262c2 | 2261 | |
970d0f1b JH |
2262 | rcu_read_lock(); |
2263 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2264 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2265 | continue; | |
2266 | ||
923e2414 | 2267 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2268 | rcu_read_unlock(); |
75d262c2 | 2269 | return k; |
970d0f1b JH |
2270 | } |
2271 | } | |
2272 | rcu_read_unlock(); | |
75d262c2 VCG |
2273 | |
2274 | return NULL; | |
2275 | } | |
75d262c2 | 2276 | |
970c4e46 JH |
2277 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2278 | { | |
2279 | struct smp_irk *irk; | |
2280 | ||
adae20cb JH |
2281 | rcu_read_lock(); |
2282 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2283 | if (!bacmp(&irk->rpa, rpa)) { | |
2284 | rcu_read_unlock(); | |
970c4e46 | 2285 | return irk; |
adae20cb | 2286 | } |
970c4e46 JH |
2287 | } |
2288 | ||
adae20cb | 2289 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2290 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2291 | bacpy(&irk->rpa, rpa); |
adae20cb | 2292 | rcu_read_unlock(); |
970c4e46 JH |
2293 | return irk; |
2294 | } | |
2295 | } | |
adae20cb | 2296 | rcu_read_unlock(); |
970c4e46 JH |
2297 | |
2298 | return NULL; | |
2299 | } | |
2300 | ||
2301 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2302 | u8 addr_type) | |
2303 | { | |
2304 | struct smp_irk *irk; | |
2305 | ||
6cfc9988 JH |
2306 | /* Identity Address must be public or static random */ |
2307 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2308 | return NULL; | |
2309 | ||
adae20cb JH |
2310 | rcu_read_lock(); |
2311 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2312 | if (addr_type == irk->addr_type && |
adae20cb JH |
2313 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2314 | rcu_read_unlock(); | |
970c4e46 | 2315 | return irk; |
adae20cb | 2316 | } |
970c4e46 | 2317 | } |
adae20cb | 2318 | rcu_read_unlock(); |
970c4e46 JH |
2319 | |
2320 | return NULL; | |
2321 | } | |
2322 | ||
567fa2aa | 2323 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2324 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2325 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2326 | { |
2327 | struct link_key *key, *old_key; | |
745c0ce3 | 2328 | u8 old_key_type; |
55ed8ca1 JH |
2329 | |
2330 | old_key = hci_find_link_key(hdev, bdaddr); | |
2331 | if (old_key) { | |
2332 | old_key_type = old_key->type; | |
2333 | key = old_key; | |
2334 | } else { | |
12adcf3a | 2335 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2336 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2337 | if (!key) |
567fa2aa | 2338 | return NULL; |
0378b597 | 2339 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2340 | } |
2341 | ||
6ed93dc6 | 2342 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2343 | |
d25e28ab JH |
2344 | /* Some buggy controller combinations generate a changed |
2345 | * combination key for legacy pairing even when there's no | |
2346 | * previous key */ | |
2347 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2348 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2349 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2350 | if (conn) |
2351 | conn->key_type = type; | |
2352 | } | |
d25e28ab | 2353 | |
55ed8ca1 | 2354 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2355 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2356 | key->pin_len = pin_len; |
2357 | ||
b6020ba0 | 2358 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2359 | key->type = old_key_type; |
4748fed2 JH |
2360 | else |
2361 | key->type = type; | |
2362 | ||
7652ff6a JH |
2363 | if (persistent) |
2364 | *persistent = hci_persistent_key(hdev, conn, type, | |
2365 | old_key_type); | |
4df378a1 | 2366 | |
567fa2aa | 2367 | return key; |
55ed8ca1 JH |
2368 | } |
2369 | ||
ca9142b8 | 2370 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2371 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2372 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2373 | { |
c9839a11 | 2374 | struct smp_ltk *key, *old_key; |
e804d25d | 2375 | u8 role = ltk_role(type); |
75d262c2 | 2376 | |
f3a73d97 | 2377 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2378 | if (old_key) |
75d262c2 | 2379 | key = old_key; |
c9839a11 | 2380 | else { |
0a14ab41 | 2381 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2382 | if (!key) |
ca9142b8 | 2383 | return NULL; |
970d0f1b | 2384 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2385 | } |
2386 | ||
75d262c2 | 2387 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2388 | key->bdaddr_type = addr_type; |
2389 | memcpy(key->val, tk, sizeof(key->val)); | |
2390 | key->authenticated = authenticated; | |
2391 | key->ediv = ediv; | |
fe39c7b2 | 2392 | key->rand = rand; |
c9839a11 VCG |
2393 | key->enc_size = enc_size; |
2394 | key->type = type; | |
75d262c2 | 2395 | |
ca9142b8 | 2396 | return key; |
75d262c2 VCG |
2397 | } |
2398 | ||
ca9142b8 JH |
2399 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2400 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2401 | { |
2402 | struct smp_irk *irk; | |
2403 | ||
2404 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2405 | if (!irk) { | |
2406 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2407 | if (!irk) | |
ca9142b8 | 2408 | return NULL; |
970c4e46 JH |
2409 | |
2410 | bacpy(&irk->bdaddr, bdaddr); | |
2411 | irk->addr_type = addr_type; | |
2412 | ||
adae20cb | 2413 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2414 | } |
2415 | ||
2416 | memcpy(irk->val, val, 16); | |
2417 | bacpy(&irk->rpa, rpa); | |
2418 | ||
ca9142b8 | 2419 | return irk; |
970c4e46 JH |
2420 | } |
2421 | ||
55ed8ca1 JH |
2422 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2423 | { | |
2424 | struct link_key *key; | |
2425 | ||
2426 | key = hci_find_link_key(hdev, bdaddr); | |
2427 | if (!key) | |
2428 | return -ENOENT; | |
2429 | ||
6ed93dc6 | 2430 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2431 | |
0378b597 JH |
2432 | list_del_rcu(&key->list); |
2433 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2434 | |
2435 | return 0; | |
2436 | } | |
2437 | ||
e0b2b27e | 2438 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2439 | { |
970d0f1b | 2440 | struct smp_ltk *k; |
c51ffa0b | 2441 | int removed = 0; |
b899efaf | 2442 | |
970d0f1b | 2443 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2444 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2445 | continue; |
2446 | ||
6ed93dc6 | 2447 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2448 | |
970d0f1b JH |
2449 | list_del_rcu(&k->list); |
2450 | kfree_rcu(k, rcu); | |
c51ffa0b | 2451 | removed++; |
b899efaf VCG |
2452 | } |
2453 | ||
c51ffa0b | 2454 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2455 | } |
2456 | ||
a7ec7338 JH |
2457 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2458 | { | |
adae20cb | 2459 | struct smp_irk *k; |
a7ec7338 | 2460 | |
adae20cb | 2461 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2462 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2463 | continue; | |
2464 | ||
2465 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2466 | ||
adae20cb JH |
2467 | list_del_rcu(&k->list); |
2468 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2469 | } |
2470 | } | |
2471 | ||
55e76b38 JH |
2472 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2473 | { | |
2474 | struct smp_ltk *k; | |
4ba9faf3 | 2475 | struct smp_irk *irk; |
55e76b38 JH |
2476 | u8 addr_type; |
2477 | ||
2478 | if (type == BDADDR_BREDR) { | |
2479 | if (hci_find_link_key(hdev, bdaddr)) | |
2480 | return true; | |
2481 | return false; | |
2482 | } | |
2483 | ||
2484 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2485 | if (type == BDADDR_LE_PUBLIC) | |
2486 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2487 | else | |
2488 | addr_type = ADDR_LE_DEV_RANDOM; | |
2489 | ||
4ba9faf3 JH |
2490 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2491 | if (irk) { | |
2492 | bdaddr = &irk->bdaddr; | |
2493 | addr_type = irk->addr_type; | |
2494 | } | |
2495 | ||
55e76b38 JH |
2496 | rcu_read_lock(); |
2497 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2498 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2499 | rcu_read_unlock(); | |
55e76b38 | 2500 | return true; |
87c8b28d | 2501 | } |
55e76b38 JH |
2502 | } |
2503 | rcu_read_unlock(); | |
2504 | ||
2505 | return false; | |
2506 | } | |
2507 | ||
6bd32326 | 2508 | /* HCI command timer function */ |
65cc2b49 | 2509 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2510 | { |
65cc2b49 MH |
2511 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2512 | cmd_timer.work); | |
6bd32326 | 2513 | |
bda4f23a AE |
2514 | if (hdev->sent_cmd) { |
2515 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2516 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2517 | ||
2518 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2519 | } else { | |
2520 | BT_ERR("%s command tx timeout", hdev->name); | |
2521 | } | |
2522 | ||
6bd32326 | 2523 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2524 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2525 | } |
2526 | ||
2763eda6 | 2527 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2528 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2529 | { |
2530 | struct oob_data *data; | |
2531 | ||
6928a924 JH |
2532 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2533 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2534 | continue; | |
2535 | if (data->bdaddr_type != bdaddr_type) | |
2536 | continue; | |
2537 | return data; | |
2538 | } | |
2763eda6 SJ |
2539 | |
2540 | return NULL; | |
2541 | } | |
2542 | ||
6928a924 JH |
2543 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2544 | u8 bdaddr_type) | |
2763eda6 SJ |
2545 | { |
2546 | struct oob_data *data; | |
2547 | ||
6928a924 | 2548 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2549 | if (!data) |
2550 | return -ENOENT; | |
2551 | ||
6928a924 | 2552 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2553 | |
2554 | list_del(&data->list); | |
2555 | kfree(data); | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | ||
35f7498a | 2560 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2561 | { |
2562 | struct oob_data *data, *n; | |
2563 | ||
2564 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2565 | list_del(&data->list); | |
2566 | kfree(data); | |
2567 | } | |
2763eda6 SJ |
2568 | } |
2569 | ||
0798872e | 2570 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2571 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2572 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2573 | { |
2574 | struct oob_data *data; | |
2575 | ||
6928a924 | 2576 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2577 | if (!data) { |
0a14ab41 | 2578 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2579 | if (!data) |
2580 | return -ENOMEM; | |
2581 | ||
2582 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2583 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2584 | list_add(&data->list, &hdev->remote_oob_data); |
2585 | } | |
2586 | ||
81328d5c JH |
2587 | if (hash192 && rand192) { |
2588 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2589 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2590 | if (hash256 && rand256) |
2591 | data->present = 0x03; | |
81328d5c JH |
2592 | } else { |
2593 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2594 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2595 | if (hash256 && rand256) |
2596 | data->present = 0x02; | |
2597 | else | |
2598 | data->present = 0x00; | |
0798872e MH |
2599 | } |
2600 | ||
81328d5c JH |
2601 | if (hash256 && rand256) { |
2602 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2603 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2604 | } else { | |
2605 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2606 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2607 | if (hash192 && rand192) |
2608 | data->present = 0x01; | |
81328d5c | 2609 | } |
0798872e | 2610 | |
6ed93dc6 | 2611 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2612 | |
2613 | return 0; | |
2614 | } | |
2615 | ||
dcc36c16 | 2616 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2617 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2618 | { |
8035ded4 | 2619 | struct bdaddr_list *b; |
b2a66aad | 2620 | |
dcc36c16 | 2621 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2622 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2623 | return b; |
b9ee0a78 | 2624 | } |
b2a66aad AJ |
2625 | |
2626 | return NULL; | |
2627 | } | |
2628 | ||
dcc36c16 | 2629 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2630 | { |
2631 | struct list_head *p, *n; | |
2632 | ||
dcc36c16 | 2633 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2634 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2635 | |
2636 | list_del(p); | |
2637 | kfree(b); | |
2638 | } | |
b2a66aad AJ |
2639 | } |
2640 | ||
dcc36c16 | 2641 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2642 | { |
2643 | struct bdaddr_list *entry; | |
b2a66aad | 2644 | |
b9ee0a78 | 2645 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2646 | return -EBADF; |
2647 | ||
dcc36c16 | 2648 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2649 | return -EEXIST; |
b2a66aad | 2650 | |
27f70f3e | 2651 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2652 | if (!entry) |
2653 | return -ENOMEM; | |
b2a66aad AJ |
2654 | |
2655 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2656 | entry->bdaddr_type = type; |
b2a66aad | 2657 | |
dcc36c16 | 2658 | list_add(&entry->list, list); |
b2a66aad | 2659 | |
2a8357f2 | 2660 | return 0; |
b2a66aad AJ |
2661 | } |
2662 | ||
dcc36c16 | 2663 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2664 | { |
2665 | struct bdaddr_list *entry; | |
b2a66aad | 2666 | |
35f7498a | 2667 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2668 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2669 | return 0; |
2670 | } | |
b2a66aad | 2671 | |
dcc36c16 | 2672 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2673 | if (!entry) |
2674 | return -ENOENT; | |
2675 | ||
2676 | list_del(&entry->list); | |
2677 | kfree(entry); | |
2678 | ||
2679 | return 0; | |
2680 | } | |
2681 | ||
15819a70 AG |
2682 | /* This function requires the caller holds hdev->lock */ |
2683 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2684 | bdaddr_t *addr, u8 addr_type) | |
2685 | { | |
2686 | struct hci_conn_params *params; | |
2687 | ||
738f6185 JH |
2688 | /* The conn params list only contains identity addresses */ |
2689 | if (!hci_is_identity_address(addr, addr_type)) | |
2690 | return NULL; | |
2691 | ||
15819a70 AG |
2692 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
2693 | if (bacmp(¶ms->addr, addr) == 0 && | |
2694 | params->addr_type == addr_type) { | |
2695 | return params; | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | return NULL; | |
2700 | } | |
2701 | ||
4b10966f | 2702 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2703 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2704 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2705 | { |
912b42ef | 2706 | struct hci_conn_params *param; |
a9b0a04c | 2707 | |
738f6185 JH |
2708 | /* The list only contains identity addresses */ |
2709 | if (!hci_is_identity_address(addr, addr_type)) | |
2710 | return NULL; | |
a9b0a04c | 2711 | |
501f8827 | 2712 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2713 | if (bacmp(¶m->addr, addr) == 0 && |
2714 | param->addr_type == addr_type) | |
2715 | return param; | |
4b10966f MH |
2716 | } |
2717 | ||
2718 | return NULL; | |
a9b0a04c AG |
2719 | } |
2720 | ||
15819a70 | 2721 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2722 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2723 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2724 | { |
2725 | struct hci_conn_params *params; | |
2726 | ||
c46245b3 | 2727 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 2728 | return NULL; |
a9b0a04c | 2729 | |
15819a70 | 2730 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce | 2731 | if (params) |
51d167c0 | 2732 | return params; |
15819a70 AG |
2733 | |
2734 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2735 | if (!params) { | |
2736 | BT_ERR("Out of memory"); | |
51d167c0 | 2737 | return NULL; |
15819a70 AG |
2738 | } |
2739 | ||
2740 | bacpy(¶ms->addr, addr); | |
2741 | params->addr_type = addr_type; | |
cef952ce AG |
2742 | |
2743 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2744 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2745 | |
bf5b3c8b MH |
2746 | params->conn_min_interval = hdev->le_conn_min_interval; |
2747 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2748 | params->conn_latency = hdev->le_conn_latency; | |
2749 | params->supervision_timeout = hdev->le_supv_timeout; | |
2750 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2751 | ||
2752 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2753 | ||
51d167c0 | 2754 | return params; |
bf5b3c8b MH |
2755 | } |
2756 | ||
f6c63249 | 2757 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2758 | { |
f8aaf9b6 | 2759 | if (params->conn) { |
f161dd41 | 2760 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2761 | hci_conn_put(params->conn); |
2762 | } | |
f161dd41 | 2763 | |
95305baa | 2764 | list_del(¶ms->action); |
15819a70 AG |
2765 | list_del(¶ms->list); |
2766 | kfree(params); | |
f6c63249 JH |
2767 | } |
2768 | ||
2769 | /* This function requires the caller holds hdev->lock */ | |
2770 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2771 | { | |
2772 | struct hci_conn_params *params; | |
2773 | ||
2774 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2775 | if (!params) | |
2776 | return; | |
2777 | ||
2778 | hci_conn_params_free(params); | |
15819a70 | 2779 | |
95305baa JH |
2780 | hci_update_background_scan(hdev); |
2781 | ||
15819a70 AG |
2782 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2783 | } | |
2784 | ||
2785 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2786 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2787 | { |
2788 | struct hci_conn_params *params, *tmp; | |
2789 | ||
2790 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2791 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2792 | continue; | |
15819a70 AG |
2793 | list_del(¶ms->list); |
2794 | kfree(params); | |
2795 | } | |
2796 | ||
55af49a8 | 2797 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2798 | } |
2799 | ||
2800 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 2801 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2802 | { |
15819a70 | 2803 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2804 | |
f6c63249 JH |
2805 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2806 | hci_conn_params_free(params); | |
77a77a30 | 2807 | |
a4790dbd | 2808 | hci_update_background_scan(hdev); |
77a77a30 | 2809 | |
15819a70 | 2810 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2811 | } |
2812 | ||
1904a853 | 2813 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 2814 | { |
4c87eaab AG |
2815 | if (status) { |
2816 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2817 | |
4c87eaab AG |
2818 | hci_dev_lock(hdev); |
2819 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2820 | hci_dev_unlock(hdev); | |
2821 | return; | |
2822 | } | |
7ba8b4be AG |
2823 | } |
2824 | ||
1904a853 MH |
2825 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
2826 | u16 opcode) | |
7ba8b4be | 2827 | { |
4c87eaab AG |
2828 | /* General inquiry access code (GIAC) */ |
2829 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
4c87eaab | 2830 | struct hci_cp_inquiry cp; |
7ba8b4be AG |
2831 | int err; |
2832 | ||
4c87eaab AG |
2833 | if (status) { |
2834 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2835 | return; | |
2836 | } | |
7ba8b4be | 2837 | |
2d28cfe7 JP |
2838 | hdev->discovery.scan_start = 0; |
2839 | ||
4c87eaab AG |
2840 | switch (hdev->discovery.type) { |
2841 | case DISCOV_TYPE_LE: | |
2842 | hci_dev_lock(hdev); | |
2843 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2844 | hci_dev_unlock(hdev); | |
2845 | break; | |
7ba8b4be | 2846 | |
4c87eaab | 2847 | case DISCOV_TYPE_INTERLEAVED: |
4c87eaab | 2848 | hci_dev_lock(hdev); |
7dbfac1d | 2849 | |
07d2334a JP |
2850 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, |
2851 | &hdev->quirks)) { | |
2852 | /* If we were running LE only scan, change discovery | |
2853 | * state. If we were running both LE and BR/EDR inquiry | |
2854 | * simultaneously, and BR/EDR inquiry is already | |
2855 | * finished, stop discovery, otherwise BR/EDR inquiry | |
2856 | * will stop discovery when finished. | |
2857 | */ | |
2858 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
2859 | hci_discovery_set_state(hdev, | |
2860 | DISCOVERY_STOPPED); | |
2861 | } else { | |
baf880a9 JH |
2862 | struct hci_request req; |
2863 | ||
07d2334a JP |
2864 | hci_inquiry_cache_flush(hdev); |
2865 | ||
baf880a9 JH |
2866 | hci_req_init(&req, hdev); |
2867 | ||
2868 | memset(&cp, 0, sizeof(cp)); | |
2869 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2870 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2871 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2872 | ||
07d2334a JP |
2873 | err = hci_req_run(&req, inquiry_complete); |
2874 | if (err) { | |
2875 | BT_ERR("Inquiry request failed: err %d", err); | |
2876 | hci_discovery_set_state(hdev, | |
2877 | DISCOVERY_STOPPED); | |
2878 | } | |
4c87eaab | 2879 | } |
7dbfac1d | 2880 | |
4c87eaab AG |
2881 | hci_dev_unlock(hdev); |
2882 | break; | |
7dbfac1d | 2883 | } |
7dbfac1d AG |
2884 | } |
2885 | ||
7ba8b4be AG |
2886 | static void le_scan_disable_work(struct work_struct *work) |
2887 | { | |
2888 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2889 | le_scan_disable.work); |
4c87eaab AG |
2890 | struct hci_request req; |
2891 | int err; | |
7ba8b4be AG |
2892 | |
2893 | BT_DBG("%s", hdev->name); | |
2894 | ||
2d28cfe7 JP |
2895 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
2896 | ||
4c87eaab | 2897 | hci_req_init(&req, hdev); |
28b75a89 | 2898 | |
b1efcc28 | 2899 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 2900 | |
4c87eaab AG |
2901 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2902 | if (err) | |
2903 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2904 | } |
2905 | ||
2d28cfe7 JP |
2906 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
2907 | u16 opcode) | |
2908 | { | |
2909 | unsigned long timeout, duration, scan_start, now; | |
2910 | ||
2911 | BT_DBG("%s", hdev->name); | |
2912 | ||
2913 | if (status) { | |
2914 | BT_ERR("Failed to restart LE scan: status %d", status); | |
2915 | return; | |
2916 | } | |
2917 | ||
2918 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
2919 | !hdev->discovery.scan_start) | |
2920 | return; | |
2921 | ||
2922 | /* When the scan was started, hdev->le_scan_disable has been queued | |
2923 | * after duration from scan_start. During scan restart this job | |
2924 | * has been canceled, and we need to queue it again after proper | |
2925 | * timeout, to make sure that scan does not run indefinitely. | |
2926 | */ | |
2927 | duration = hdev->discovery.scan_duration; | |
2928 | scan_start = hdev->discovery.scan_start; | |
2929 | now = jiffies; | |
2930 | if (now - scan_start <= duration) { | |
2931 | int elapsed; | |
2932 | ||
2933 | if (now >= scan_start) | |
2934 | elapsed = now - scan_start; | |
2935 | else | |
2936 | elapsed = ULONG_MAX - scan_start + now; | |
2937 | ||
2938 | timeout = duration - elapsed; | |
2939 | } else { | |
2940 | timeout = 0; | |
2941 | } | |
2942 | queue_delayed_work(hdev->workqueue, | |
2943 | &hdev->le_scan_disable, timeout); | |
2944 | } | |
2945 | ||
2946 | static void le_scan_restart_work(struct work_struct *work) | |
2947 | { | |
2948 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2949 | le_scan_restart.work); | |
2950 | struct hci_request req; | |
2951 | struct hci_cp_le_set_scan_enable cp; | |
2952 | int err; | |
2953 | ||
2954 | BT_DBG("%s", hdev->name); | |
2955 | ||
2956 | /* If controller is not scanning we are done. */ | |
d7a5a11d | 2957 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2d28cfe7 JP |
2958 | return; |
2959 | ||
2960 | hci_req_init(&req, hdev); | |
2961 | ||
2962 | hci_req_add_le_scan_disable(&req); | |
2963 | ||
2964 | memset(&cp, 0, sizeof(cp)); | |
2965 | cp.enable = LE_SCAN_ENABLE; | |
2966 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
2967 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2968 | ||
2969 | err = hci_req_run(&req, le_scan_restart_work_complete); | |
2970 | if (err) | |
2971 | BT_ERR("Restart LE scan request failed: err %d", err); | |
2972 | } | |
2973 | ||
a1f4c318 JH |
2974 | /* Copy the Identity Address of the controller. |
2975 | * | |
2976 | * If the controller has a public BD_ADDR, then by default use that one. | |
2977 | * If this is a LE only controller without a public address, default to | |
2978 | * the static random address. | |
2979 | * | |
2980 | * For debugging purposes it is possible to force controllers with a | |
2981 | * public address to use the static random address instead. | |
50b5b952 MH |
2982 | * |
2983 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2984 | * userspace has configured a static address, then that address | |
2985 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2986 | */ |
2987 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2988 | u8 *bdaddr_type) | |
2989 | { | |
b7cb93e5 | 2990 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2991 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2992 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2993 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2994 | bacpy(bdaddr, &hdev->static_addr); |
2995 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2996 | } else { | |
2997 | bacpy(bdaddr, &hdev->bdaddr); | |
2998 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2999 | } | |
3000 | } | |
3001 | ||
9be0dab7 DH |
3002 | /* Alloc HCI device */ |
3003 | struct hci_dev *hci_alloc_dev(void) | |
3004 | { | |
3005 | struct hci_dev *hdev; | |
3006 | ||
27f70f3e | 3007 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3008 | if (!hdev) |
3009 | return NULL; | |
3010 | ||
b1b813d4 DH |
3011 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3012 | hdev->esco_type = (ESCO_HV1); | |
3013 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3014 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3015 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3016 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3017 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3018 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3019 | |
b1b813d4 DH |
3020 | hdev->sniff_max_interval = 800; |
3021 | hdev->sniff_min_interval = 80; | |
3022 | ||
3f959d46 | 3023 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3024 | hdev->le_adv_min_interval = 0x0800; |
3025 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3026 | hdev->le_scan_interval = 0x0060; |
3027 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3028 | hdev->le_conn_min_interval = 0x0028; |
3029 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3030 | hdev->le_conn_latency = 0x0000; |
3031 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3032 | hdev->le_def_tx_len = 0x001b; |
3033 | hdev->le_def_tx_time = 0x0148; | |
3034 | hdev->le_max_tx_len = 0x001b; | |
3035 | hdev->le_max_tx_time = 0x0148; | |
3036 | hdev->le_max_rx_len = 0x001b; | |
3037 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3038 | |
d6bfd59c | 3039 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3040 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3041 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3042 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3043 | |
b1b813d4 DH |
3044 | mutex_init(&hdev->lock); |
3045 | mutex_init(&hdev->req_lock); | |
3046 | ||
3047 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3048 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3049 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3050 | INIT_LIST_HEAD(&hdev->uuids); |
3051 | INIT_LIST_HEAD(&hdev->link_keys); | |
3052 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3053 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3054 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3055 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3056 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3057 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3058 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3059 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3060 | |
3061 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3062 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3063 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3064 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3065 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3066 | |
b1b813d4 DH |
3067 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3068 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3069 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2d28cfe7 | 3070 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
b1b813d4 | 3071 | |
b1b813d4 DH |
3072 | skb_queue_head_init(&hdev->rx_q); |
3073 | skb_queue_head_init(&hdev->cmd_q); | |
3074 | skb_queue_head_init(&hdev->raw_q); | |
3075 | ||
3076 | init_waitqueue_head(&hdev->req_wait_q); | |
3077 | ||
65cc2b49 | 3078 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3079 | |
b1b813d4 DH |
3080 | hci_init_sysfs(hdev); |
3081 | discovery_init(hdev); | |
203fea01 | 3082 | adv_info_init(hdev); |
9be0dab7 DH |
3083 | |
3084 | return hdev; | |
3085 | } | |
3086 | EXPORT_SYMBOL(hci_alloc_dev); | |
3087 | ||
3088 | /* Free HCI device */ | |
3089 | void hci_free_dev(struct hci_dev *hdev) | |
3090 | { | |
9be0dab7 DH |
3091 | /* will free via device release */ |
3092 | put_device(&hdev->dev); | |
3093 | } | |
3094 | EXPORT_SYMBOL(hci_free_dev); | |
3095 | ||
1da177e4 LT |
3096 | /* Register HCI device */ |
3097 | int hci_register_dev(struct hci_dev *hdev) | |
3098 | { | |
b1b813d4 | 3099 | int id, error; |
1da177e4 | 3100 | |
74292d5a | 3101 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3102 | return -EINVAL; |
3103 | ||
08add513 MM |
3104 | /* Do not allow HCI_AMP devices to register at index 0, |
3105 | * so the index can be used as the AMP controller ID. | |
3106 | */ | |
3df92b31 SL |
3107 | switch (hdev->dev_type) { |
3108 | case HCI_BREDR: | |
3109 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3110 | break; | |
3111 | case HCI_AMP: | |
3112 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3113 | break; | |
3114 | default: | |
3115 | return -EINVAL; | |
1da177e4 | 3116 | } |
8e87d142 | 3117 | |
3df92b31 SL |
3118 | if (id < 0) |
3119 | return id; | |
3120 | ||
1da177e4 LT |
3121 | sprintf(hdev->name, "hci%d", id); |
3122 | hdev->id = id; | |
2d8b3a11 AE |
3123 | |
3124 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3125 | ||
d8537548 KC |
3126 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3127 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3128 | if (!hdev->workqueue) { |
3129 | error = -ENOMEM; | |
3130 | goto err; | |
3131 | } | |
f48fd9c8 | 3132 | |
d8537548 KC |
3133 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3134 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3135 | if (!hdev->req_workqueue) { |
3136 | destroy_workqueue(hdev->workqueue); | |
3137 | error = -ENOMEM; | |
3138 | goto err; | |
3139 | } | |
3140 | ||
0153e2ec MH |
3141 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3142 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3143 | ||
bdc3e0f1 MH |
3144 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3145 | ||
3146 | error = device_add(&hdev->dev); | |
33ca954d | 3147 | if (error < 0) |
54506918 | 3148 | goto err_wqueue; |
1da177e4 | 3149 | |
611b30f7 | 3150 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3151 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3152 | hdev); | |
611b30f7 MH |
3153 | if (hdev->rfkill) { |
3154 | if (rfkill_register(hdev->rfkill) < 0) { | |
3155 | rfkill_destroy(hdev->rfkill); | |
3156 | hdev->rfkill = NULL; | |
3157 | } | |
3158 | } | |
3159 | ||
5e130367 | 3160 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3161 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3162 | |
a1536da2 MH |
3163 | hci_dev_set_flag(hdev, HCI_SETUP); |
3164 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3165 | |
01cd3404 | 3166 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3167 | /* Assume BR/EDR support until proven otherwise (such as |
3168 | * through reading supported features during init. | |
3169 | */ | |
a1536da2 | 3170 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3171 | } |
ce2be9ac | 3172 | |
fcee3377 GP |
3173 | write_lock(&hci_dev_list_lock); |
3174 | list_add(&hdev->list, &hci_dev_list); | |
3175 | write_unlock(&hci_dev_list_lock); | |
3176 | ||
4a964404 MH |
3177 | /* Devices that are marked for raw-only usage are unconfigured |
3178 | * and should not be included in normal operation. | |
fee746b0 MH |
3179 | */ |
3180 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3181 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3182 | |
1da177e4 | 3183 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3184 | hci_dev_hold(hdev); |
1da177e4 | 3185 | |
19202573 | 3186 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3187 | |
1da177e4 | 3188 | return id; |
f48fd9c8 | 3189 | |
33ca954d DH |
3190 | err_wqueue: |
3191 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3192 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3193 | err: |
3df92b31 | 3194 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3195 | |
33ca954d | 3196 | return error; |
1da177e4 LT |
3197 | } |
3198 | EXPORT_SYMBOL(hci_register_dev); | |
3199 | ||
3200 | /* Unregister HCI device */ | |
59735631 | 3201 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3202 | { |
2d7cc19e | 3203 | int id; |
ef222013 | 3204 | |
c13854ce | 3205 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3206 | |
a1536da2 | 3207 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3208 | |
3df92b31 SL |
3209 | id = hdev->id; |
3210 | ||
f20d09d5 | 3211 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3212 | list_del(&hdev->list); |
f20d09d5 | 3213 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3214 | |
3215 | hci_dev_do_close(hdev); | |
3216 | ||
b9b5ef18 GP |
3217 | cancel_work_sync(&hdev->power_on); |
3218 | ||
ab81cbf9 | 3219 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3220 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3221 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3222 | hci_dev_lock(hdev); |
744cf19e | 3223 | mgmt_index_removed(hdev); |
09fd0de5 | 3224 | hci_dev_unlock(hdev); |
56e5cb86 | 3225 | } |
ab81cbf9 | 3226 | |
2e58ef3e JH |
3227 | /* mgmt_index_removed should take care of emptying the |
3228 | * pending list */ | |
3229 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3230 | ||
1da177e4 LT |
3231 | hci_notify(hdev, HCI_DEV_UNREG); |
3232 | ||
611b30f7 MH |
3233 | if (hdev->rfkill) { |
3234 | rfkill_unregister(hdev->rfkill); | |
3235 | rfkill_destroy(hdev->rfkill); | |
3236 | } | |
3237 | ||
bdc3e0f1 | 3238 | device_del(&hdev->dev); |
147e2d59 | 3239 | |
0153e2ec MH |
3240 | debugfs_remove_recursive(hdev->debugfs); |
3241 | ||
f48fd9c8 | 3242 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3243 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3244 | |
09fd0de5 | 3245 | hci_dev_lock(hdev); |
dcc36c16 | 3246 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3247 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3248 | hci_uuids_clear(hdev); |
55ed8ca1 | 3249 | hci_link_keys_clear(hdev); |
b899efaf | 3250 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3251 | hci_smp_irks_clear(hdev); |
2763eda6 | 3252 | hci_remote_oob_data_clear(hdev); |
dcc36c16 | 3253 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3254 | hci_conn_params_clear_all(hdev); |
22078800 | 3255 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3256 | hci_dev_unlock(hdev); |
e2e0cacb | 3257 | |
dc946bd8 | 3258 | hci_dev_put(hdev); |
3df92b31 SL |
3259 | |
3260 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3261 | } |
3262 | EXPORT_SYMBOL(hci_unregister_dev); | |
3263 | ||
3264 | /* Suspend HCI device */ | |
3265 | int hci_suspend_dev(struct hci_dev *hdev) | |
3266 | { | |
3267 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3268 | return 0; | |
3269 | } | |
3270 | EXPORT_SYMBOL(hci_suspend_dev); | |
3271 | ||
3272 | /* Resume HCI device */ | |
3273 | int hci_resume_dev(struct hci_dev *hdev) | |
3274 | { | |
3275 | hci_notify(hdev, HCI_DEV_RESUME); | |
3276 | return 0; | |
3277 | } | |
3278 | EXPORT_SYMBOL(hci_resume_dev); | |
3279 | ||
75e0569f MH |
3280 | /* Reset HCI device */ |
3281 | int hci_reset_dev(struct hci_dev *hdev) | |
3282 | { | |
3283 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3284 | struct sk_buff *skb; | |
3285 | ||
3286 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3287 | if (!skb) | |
3288 | return -ENOMEM; | |
3289 | ||
3290 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3291 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3292 | ||
3293 | /* Send Hardware Error to upper stack */ | |
3294 | return hci_recv_frame(hdev, skb); | |
3295 | } | |
3296 | EXPORT_SYMBOL(hci_reset_dev); | |
3297 | ||
76bca880 | 3298 | /* Receive frame from HCI drivers */ |
e1a26170 | 3299 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3300 | { |
76bca880 | 3301 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3302 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3303 | kfree_skb(skb); |
3304 | return -ENXIO; | |
3305 | } | |
3306 | ||
d82603c6 | 3307 | /* Incoming skb */ |
76bca880 MH |
3308 | bt_cb(skb)->incoming = 1; |
3309 | ||
3310 | /* Time stamp */ | |
3311 | __net_timestamp(skb); | |
3312 | ||
76bca880 | 3313 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3314 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3315 | |
76bca880 MH |
3316 | return 0; |
3317 | } | |
3318 | EXPORT_SYMBOL(hci_recv_frame); | |
3319 | ||
1da177e4 LT |
3320 | /* ---- Interface to upper protocols ---- */ |
3321 | ||
1da177e4 LT |
3322 | int hci_register_cb(struct hci_cb *cb) |
3323 | { | |
3324 | BT_DBG("%p name %s", cb, cb->name); | |
3325 | ||
fba7ecf0 | 3326 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3327 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3328 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3329 | |
3330 | return 0; | |
3331 | } | |
3332 | EXPORT_SYMBOL(hci_register_cb); | |
3333 | ||
3334 | int hci_unregister_cb(struct hci_cb *cb) | |
3335 | { | |
3336 | BT_DBG("%p name %s", cb, cb->name); | |
3337 | ||
fba7ecf0 | 3338 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3339 | list_del(&cb->list); |
fba7ecf0 | 3340 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3341 | |
3342 | return 0; | |
3343 | } | |
3344 | EXPORT_SYMBOL(hci_unregister_cb); | |
3345 | ||
51086991 | 3346 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3347 | { |
cdc52faa MH |
3348 | int err; |
3349 | ||
0d48d939 | 3350 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3351 | |
cd82e61c MH |
3352 | /* Time stamp */ |
3353 | __net_timestamp(skb); | |
1da177e4 | 3354 | |
cd82e61c MH |
3355 | /* Send copy to monitor */ |
3356 | hci_send_to_monitor(hdev, skb); | |
3357 | ||
3358 | if (atomic_read(&hdev->promisc)) { | |
3359 | /* Send copy to the sockets */ | |
470fe1b5 | 3360 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3361 | } |
3362 | ||
3363 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3364 | skb_orphan(skb); | |
3365 | ||
cdc52faa MH |
3366 | err = hdev->send(hdev, skb); |
3367 | if (err < 0) { | |
3368 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3369 | kfree_skb(skb); | |
3370 | } | |
1da177e4 LT |
3371 | } |
3372 | ||
1ca3a9d0 | 3373 | /* Send HCI command */ |
07dc93dd JH |
3374 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3375 | const void *param) | |
1ca3a9d0 JH |
3376 | { |
3377 | struct sk_buff *skb; | |
3378 | ||
3379 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3380 | ||
3381 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3382 | if (!skb) { | |
3383 | BT_ERR("%s no memory for command", hdev->name); | |
3384 | return -ENOMEM; | |
3385 | } | |
3386 | ||
49c922bb | 3387 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3388 | * single-command requests. |
3389 | */ | |
db6e3e8d | 3390 | bt_cb(skb)->req.start = true; |
11714b3d | 3391 | |
1da177e4 | 3392 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3393 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3394 | |
3395 | return 0; | |
3396 | } | |
1da177e4 LT |
3397 | |
3398 | /* Get data from the previously sent command */ | |
a9de9248 | 3399 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3400 | { |
3401 | struct hci_command_hdr *hdr; | |
3402 | ||
3403 | if (!hdev->sent_cmd) | |
3404 | return NULL; | |
3405 | ||
3406 | hdr = (void *) hdev->sent_cmd->data; | |
3407 | ||
a9de9248 | 3408 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3409 | return NULL; |
3410 | ||
f0e09510 | 3411 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3412 | |
3413 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3414 | } | |
3415 | ||
3416 | /* Send ACL data */ | |
3417 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3418 | { | |
3419 | struct hci_acl_hdr *hdr; | |
3420 | int len = skb->len; | |
3421 | ||
badff6d0 ACM |
3422 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3423 | skb_reset_transport_header(skb); | |
9c70220b | 3424 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3425 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3426 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3427 | } |
3428 | ||
ee22be7e | 3429 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3430 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3431 | { |
ee22be7e | 3432 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3433 | struct hci_dev *hdev = conn->hdev; |
3434 | struct sk_buff *list; | |
3435 | ||
087bfd99 GP |
3436 | skb->len = skb_headlen(skb); |
3437 | skb->data_len = 0; | |
3438 | ||
3439 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3440 | |
3441 | switch (hdev->dev_type) { | |
3442 | case HCI_BREDR: | |
3443 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3444 | break; | |
3445 | case HCI_AMP: | |
3446 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3447 | break; | |
3448 | default: | |
3449 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3450 | return; | |
3451 | } | |
087bfd99 | 3452 | |
70f23020 AE |
3453 | list = skb_shinfo(skb)->frag_list; |
3454 | if (!list) { | |
1da177e4 LT |
3455 | /* Non fragmented */ |
3456 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3457 | ||
73d80deb | 3458 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3459 | } else { |
3460 | /* Fragmented */ | |
3461 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3462 | ||
3463 | skb_shinfo(skb)->frag_list = NULL; | |
3464 | ||
9cfd5a23 JR |
3465 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3466 | * here because of 6LoWPAN links, as there this function is | |
3467 | * called from softirq and using normal spin lock could cause | |
3468 | * deadlocks. | |
3469 | */ | |
3470 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3471 | |
73d80deb | 3472 | __skb_queue_tail(queue, skb); |
e702112f AE |
3473 | |
3474 | flags &= ~ACL_START; | |
3475 | flags |= ACL_CONT; | |
1da177e4 LT |
3476 | do { |
3477 | skb = list; list = list->next; | |
8e87d142 | 3478 | |
0d48d939 | 3479 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3480 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3481 | |
3482 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3483 | ||
73d80deb | 3484 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3485 | } while (list); |
3486 | ||
9cfd5a23 | 3487 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3488 | } |
73d80deb LAD |
3489 | } |
3490 | ||
3491 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3492 | { | |
ee22be7e | 3493 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3494 | |
f0e09510 | 3495 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3496 | |
ee22be7e | 3497 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3498 | |
3eff45ea | 3499 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3500 | } |
1da177e4 LT |
3501 | |
3502 | /* Send SCO data */ | |
0d861d8b | 3503 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3504 | { |
3505 | struct hci_dev *hdev = conn->hdev; | |
3506 | struct hci_sco_hdr hdr; | |
3507 | ||
3508 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3509 | ||
aca3192c | 3510 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3511 | hdr.dlen = skb->len; |
3512 | ||
badff6d0 ACM |
3513 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3514 | skb_reset_transport_header(skb); | |
9c70220b | 3515 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3516 | |
0d48d939 | 3517 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3518 | |
1da177e4 | 3519 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3520 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3521 | } |
1da177e4 LT |
3522 | |
3523 | /* ---- HCI TX task (outgoing data) ---- */ | |
3524 | ||
3525 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3526 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3527 | int *quote) | |
1da177e4 LT |
3528 | { |
3529 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3530 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3531 | unsigned int num = 0, min = ~0; |
1da177e4 | 3532 | |
8e87d142 | 3533 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3534 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3535 | |
3536 | rcu_read_lock(); | |
3537 | ||
3538 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3539 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3540 | continue; |
769be974 MH |
3541 | |
3542 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3543 | continue; | |
3544 | ||
1da177e4 LT |
3545 | num++; |
3546 | ||
3547 | if (c->sent < min) { | |
3548 | min = c->sent; | |
3549 | conn = c; | |
3550 | } | |
52087a79 LAD |
3551 | |
3552 | if (hci_conn_num(hdev, type) == num) | |
3553 | break; | |
1da177e4 LT |
3554 | } |
3555 | ||
bf4c6325 GP |
3556 | rcu_read_unlock(); |
3557 | ||
1da177e4 | 3558 | if (conn) { |
6ed58ec5 VT |
3559 | int cnt, q; |
3560 | ||
3561 | switch (conn->type) { | |
3562 | case ACL_LINK: | |
3563 | cnt = hdev->acl_cnt; | |
3564 | break; | |
3565 | case SCO_LINK: | |
3566 | case ESCO_LINK: | |
3567 | cnt = hdev->sco_cnt; | |
3568 | break; | |
3569 | case LE_LINK: | |
3570 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3571 | break; | |
3572 | default: | |
3573 | cnt = 0; | |
3574 | BT_ERR("Unknown link type"); | |
3575 | } | |
3576 | ||
3577 | q = cnt / num; | |
1da177e4 LT |
3578 | *quote = q ? q : 1; |
3579 | } else | |
3580 | *quote = 0; | |
3581 | ||
3582 | BT_DBG("conn %p quote %d", conn, *quote); | |
3583 | return conn; | |
3584 | } | |
3585 | ||
6039aa73 | 3586 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3587 | { |
3588 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3589 | struct hci_conn *c; |
1da177e4 | 3590 | |
bae1f5d9 | 3591 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3592 | |
bf4c6325 GP |
3593 | rcu_read_lock(); |
3594 | ||
1da177e4 | 3595 | /* Kill stalled connections */ |
bf4c6325 | 3596 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3597 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3598 | BT_ERR("%s killing stalled connection %pMR", |
3599 | hdev->name, &c->dst); | |
bed71748 | 3600 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3601 | } |
3602 | } | |
bf4c6325 GP |
3603 | |
3604 | rcu_read_unlock(); | |
1da177e4 LT |
3605 | } |
3606 | ||
6039aa73 GP |
3607 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3608 | int *quote) | |
1da177e4 | 3609 | { |
73d80deb LAD |
3610 | struct hci_conn_hash *h = &hdev->conn_hash; |
3611 | struct hci_chan *chan = NULL; | |
abc5de8f | 3612 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3613 | struct hci_conn *conn; |
73d80deb LAD |
3614 | int cnt, q, conn_num = 0; |
3615 | ||
3616 | BT_DBG("%s", hdev->name); | |
3617 | ||
bf4c6325 GP |
3618 | rcu_read_lock(); |
3619 | ||
3620 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3621 | struct hci_chan *tmp; |
3622 | ||
3623 | if (conn->type != type) | |
3624 | continue; | |
3625 | ||
3626 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3627 | continue; | |
3628 | ||
3629 | conn_num++; | |
3630 | ||
8192edef | 3631 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3632 | struct sk_buff *skb; |
3633 | ||
3634 | if (skb_queue_empty(&tmp->data_q)) | |
3635 | continue; | |
3636 | ||
3637 | skb = skb_peek(&tmp->data_q); | |
3638 | if (skb->priority < cur_prio) | |
3639 | continue; | |
3640 | ||
3641 | if (skb->priority > cur_prio) { | |
3642 | num = 0; | |
3643 | min = ~0; | |
3644 | cur_prio = skb->priority; | |
3645 | } | |
3646 | ||
3647 | num++; | |
3648 | ||
3649 | if (conn->sent < min) { | |
3650 | min = conn->sent; | |
3651 | chan = tmp; | |
3652 | } | |
3653 | } | |
3654 | ||
3655 | if (hci_conn_num(hdev, type) == conn_num) | |
3656 | break; | |
3657 | } | |
3658 | ||
bf4c6325 GP |
3659 | rcu_read_unlock(); |
3660 | ||
73d80deb LAD |
3661 | if (!chan) |
3662 | return NULL; | |
3663 | ||
3664 | switch (chan->conn->type) { | |
3665 | case ACL_LINK: | |
3666 | cnt = hdev->acl_cnt; | |
3667 | break; | |
bd1eb66b AE |
3668 | case AMP_LINK: |
3669 | cnt = hdev->block_cnt; | |
3670 | break; | |
73d80deb LAD |
3671 | case SCO_LINK: |
3672 | case ESCO_LINK: | |
3673 | cnt = hdev->sco_cnt; | |
3674 | break; | |
3675 | case LE_LINK: | |
3676 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3677 | break; | |
3678 | default: | |
3679 | cnt = 0; | |
3680 | BT_ERR("Unknown link type"); | |
3681 | } | |
3682 | ||
3683 | q = cnt / num; | |
3684 | *quote = q ? q : 1; | |
3685 | BT_DBG("chan %p quote %d", chan, *quote); | |
3686 | return chan; | |
3687 | } | |
3688 | ||
02b20f0b LAD |
3689 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3690 | { | |
3691 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3692 | struct hci_conn *conn; | |
3693 | int num = 0; | |
3694 | ||
3695 | BT_DBG("%s", hdev->name); | |
3696 | ||
bf4c6325 GP |
3697 | rcu_read_lock(); |
3698 | ||
3699 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3700 | struct hci_chan *chan; |
3701 | ||
3702 | if (conn->type != type) | |
3703 | continue; | |
3704 | ||
3705 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3706 | continue; | |
3707 | ||
3708 | num++; | |
3709 | ||
8192edef | 3710 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3711 | struct sk_buff *skb; |
3712 | ||
3713 | if (chan->sent) { | |
3714 | chan->sent = 0; | |
3715 | continue; | |
3716 | } | |
3717 | ||
3718 | if (skb_queue_empty(&chan->data_q)) | |
3719 | continue; | |
3720 | ||
3721 | skb = skb_peek(&chan->data_q); | |
3722 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3723 | continue; | |
3724 | ||
3725 | skb->priority = HCI_PRIO_MAX - 1; | |
3726 | ||
3727 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3728 | skb->priority); |
02b20f0b LAD |
3729 | } |
3730 | ||
3731 | if (hci_conn_num(hdev, type) == num) | |
3732 | break; | |
3733 | } | |
bf4c6325 GP |
3734 | |
3735 | rcu_read_unlock(); | |
3736 | ||
02b20f0b LAD |
3737 | } |
3738 | ||
b71d385a AE |
3739 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3740 | { | |
3741 | /* Calculate count of blocks used by this packet */ | |
3742 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3743 | } | |
3744 | ||
6039aa73 | 3745 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3746 | { |
d7a5a11d | 3747 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3748 | /* ACL tx timeout must be longer than maximum |
3749 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3750 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3751 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3752 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3753 | } |
63d2bc1b | 3754 | } |
1da177e4 | 3755 | |
6039aa73 | 3756 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3757 | { |
3758 | unsigned int cnt = hdev->acl_cnt; | |
3759 | struct hci_chan *chan; | |
3760 | struct sk_buff *skb; | |
3761 | int quote; | |
3762 | ||
3763 | __check_timeout(hdev, cnt); | |
04837f64 | 3764 | |
73d80deb | 3765 | while (hdev->acl_cnt && |
a8c5fb1a | 3766 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3767 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3768 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3769 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3770 | skb->len, skb->priority); |
73d80deb | 3771 | |
ec1cce24 LAD |
3772 | /* Stop if priority has changed */ |
3773 | if (skb->priority < priority) | |
3774 | break; | |
3775 | ||
3776 | skb = skb_dequeue(&chan->data_q); | |
3777 | ||
73d80deb | 3778 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3779 | bt_cb(skb)->force_active); |
04837f64 | 3780 | |
57d17d70 | 3781 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3782 | hdev->acl_last_tx = jiffies; |
3783 | ||
3784 | hdev->acl_cnt--; | |
73d80deb LAD |
3785 | chan->sent++; |
3786 | chan->conn->sent++; | |
1da177e4 LT |
3787 | } |
3788 | } | |
02b20f0b LAD |
3789 | |
3790 | if (cnt != hdev->acl_cnt) | |
3791 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3792 | } |
3793 | ||
6039aa73 | 3794 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3795 | { |
63d2bc1b | 3796 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3797 | struct hci_chan *chan; |
3798 | struct sk_buff *skb; | |
3799 | int quote; | |
bd1eb66b | 3800 | u8 type; |
b71d385a | 3801 | |
63d2bc1b | 3802 | __check_timeout(hdev, cnt); |
b71d385a | 3803 | |
bd1eb66b AE |
3804 | BT_DBG("%s", hdev->name); |
3805 | ||
3806 | if (hdev->dev_type == HCI_AMP) | |
3807 | type = AMP_LINK; | |
3808 | else | |
3809 | type = ACL_LINK; | |
3810 | ||
b71d385a | 3811 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3812 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3813 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3814 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3815 | int blocks; | |
3816 | ||
3817 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3818 | skb->len, skb->priority); |
b71d385a AE |
3819 | |
3820 | /* Stop if priority has changed */ | |
3821 | if (skb->priority < priority) | |
3822 | break; | |
3823 | ||
3824 | skb = skb_dequeue(&chan->data_q); | |
3825 | ||
3826 | blocks = __get_blocks(hdev, skb); | |
3827 | if (blocks > hdev->block_cnt) | |
3828 | return; | |
3829 | ||
3830 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3831 | bt_cb(skb)->force_active); |
b71d385a | 3832 | |
57d17d70 | 3833 | hci_send_frame(hdev, skb); |
b71d385a AE |
3834 | hdev->acl_last_tx = jiffies; |
3835 | ||
3836 | hdev->block_cnt -= blocks; | |
3837 | quote -= blocks; | |
3838 | ||
3839 | chan->sent += blocks; | |
3840 | chan->conn->sent += blocks; | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3845 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3846 | } |
3847 | ||
6039aa73 | 3848 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3849 | { |
3850 | BT_DBG("%s", hdev->name); | |
3851 | ||
bd1eb66b AE |
3852 | /* No ACL link over BR/EDR controller */ |
3853 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3854 | return; | |
3855 | ||
3856 | /* No AMP link over AMP controller */ | |
3857 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3858 | return; |
3859 | ||
3860 | switch (hdev->flow_ctl_mode) { | |
3861 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3862 | hci_sched_acl_pkt(hdev); | |
3863 | break; | |
3864 | ||
3865 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3866 | hci_sched_acl_blk(hdev); | |
3867 | break; | |
3868 | } | |
3869 | } | |
3870 | ||
1da177e4 | 3871 | /* Schedule SCO */ |
6039aa73 | 3872 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3873 | { |
3874 | struct hci_conn *conn; | |
3875 | struct sk_buff *skb; | |
3876 | int quote; | |
3877 | ||
3878 | BT_DBG("%s", hdev->name); | |
3879 | ||
52087a79 LAD |
3880 | if (!hci_conn_num(hdev, SCO_LINK)) |
3881 | return; | |
3882 | ||
1da177e4 LT |
3883 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3884 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3885 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3886 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3887 | |
3888 | conn->sent++; | |
3889 | if (conn->sent == ~0) | |
3890 | conn->sent = 0; | |
3891 | } | |
3892 | } | |
3893 | } | |
3894 | ||
6039aa73 | 3895 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3896 | { |
3897 | struct hci_conn *conn; | |
3898 | struct sk_buff *skb; | |
3899 | int quote; | |
3900 | ||
3901 | BT_DBG("%s", hdev->name); | |
3902 | ||
52087a79 LAD |
3903 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3904 | return; | |
3905 | ||
8fc9ced3 GP |
3906 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3907 | "e))) { | |
b6a0dc82 MH |
3908 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3909 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3910 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3911 | |
3912 | conn->sent++; | |
3913 | if (conn->sent == ~0) | |
3914 | conn->sent = 0; | |
3915 | } | |
3916 | } | |
3917 | } | |
3918 | ||
6039aa73 | 3919 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3920 | { |
73d80deb | 3921 | struct hci_chan *chan; |
6ed58ec5 | 3922 | struct sk_buff *skb; |
02b20f0b | 3923 | int quote, cnt, tmp; |
6ed58ec5 VT |
3924 | |
3925 | BT_DBG("%s", hdev->name); | |
3926 | ||
52087a79 LAD |
3927 | if (!hci_conn_num(hdev, LE_LINK)) |
3928 | return; | |
3929 | ||
d7a5a11d | 3930 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
3931 | /* LE tx timeout must be longer than maximum |
3932 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3933 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3934 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3935 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3936 | } |
3937 | ||
3938 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3939 | tmp = cnt; |
73d80deb | 3940 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3941 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3942 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3943 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3944 | skb->len, skb->priority); |
6ed58ec5 | 3945 | |
ec1cce24 LAD |
3946 | /* Stop if priority has changed */ |
3947 | if (skb->priority < priority) | |
3948 | break; | |
3949 | ||
3950 | skb = skb_dequeue(&chan->data_q); | |
3951 | ||
57d17d70 | 3952 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3953 | hdev->le_last_tx = jiffies; |
3954 | ||
3955 | cnt--; | |
73d80deb LAD |
3956 | chan->sent++; |
3957 | chan->conn->sent++; | |
6ed58ec5 VT |
3958 | } |
3959 | } | |
73d80deb | 3960 | |
6ed58ec5 VT |
3961 | if (hdev->le_pkts) |
3962 | hdev->le_cnt = cnt; | |
3963 | else | |
3964 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3965 | |
3966 | if (cnt != tmp) | |
3967 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3968 | } |
3969 | ||
3eff45ea | 3970 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3971 | { |
3eff45ea | 3972 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3973 | struct sk_buff *skb; |
3974 | ||
6ed58ec5 | 3975 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3976 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3977 | |
d7a5a11d | 3978 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
3979 | /* Schedule queues and send stuff to HCI driver */ |
3980 | hci_sched_acl(hdev); | |
3981 | hci_sched_sco(hdev); | |
3982 | hci_sched_esco(hdev); | |
3983 | hci_sched_le(hdev); | |
3984 | } | |
6ed58ec5 | 3985 | |
1da177e4 LT |
3986 | /* Send next queued raw (unknown type) packet */ |
3987 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3988 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3989 | } |
3990 | ||
25985edc | 3991 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3992 | |
3993 | /* ACL data packet */ | |
6039aa73 | 3994 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3995 | { |
3996 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3997 | struct hci_conn *conn; | |
3998 | __u16 handle, flags; | |
3999 | ||
4000 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4001 | ||
4002 | handle = __le16_to_cpu(hdr->handle); | |
4003 | flags = hci_flags(handle); | |
4004 | handle = hci_handle(handle); | |
4005 | ||
f0e09510 | 4006 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4007 | handle, flags); |
1da177e4 LT |
4008 | |
4009 | hdev->stat.acl_rx++; | |
4010 | ||
4011 | hci_dev_lock(hdev); | |
4012 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4013 | hci_dev_unlock(hdev); | |
8e87d142 | 4014 | |
1da177e4 | 4015 | if (conn) { |
65983fc7 | 4016 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4017 | |
1da177e4 | 4018 | /* Send to upper protocol */ |
686ebf28 UF |
4019 | l2cap_recv_acldata(conn, skb, flags); |
4020 | return; | |
1da177e4 | 4021 | } else { |
8e87d142 | 4022 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4023 | hdev->name, handle); |
1da177e4 LT |
4024 | } |
4025 | ||
4026 | kfree_skb(skb); | |
4027 | } | |
4028 | ||
4029 | /* SCO data packet */ | |
6039aa73 | 4030 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4031 | { |
4032 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4033 | struct hci_conn *conn; | |
4034 | __u16 handle; | |
4035 | ||
4036 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4037 | ||
4038 | handle = __le16_to_cpu(hdr->handle); | |
4039 | ||
f0e09510 | 4040 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4041 | |
4042 | hdev->stat.sco_rx++; | |
4043 | ||
4044 | hci_dev_lock(hdev); | |
4045 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4046 | hci_dev_unlock(hdev); | |
4047 | ||
4048 | if (conn) { | |
1da177e4 | 4049 | /* Send to upper protocol */ |
686ebf28 UF |
4050 | sco_recv_scodata(conn, skb); |
4051 | return; | |
1da177e4 | 4052 | } else { |
8e87d142 | 4053 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4054 | hdev->name, handle); |
1da177e4 LT |
4055 | } |
4056 | ||
4057 | kfree_skb(skb); | |
4058 | } | |
4059 | ||
9238f36a JH |
4060 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4061 | { | |
4062 | struct sk_buff *skb; | |
4063 | ||
4064 | skb = skb_peek(&hdev->cmd_q); | |
4065 | if (!skb) | |
4066 | return true; | |
4067 | ||
db6e3e8d | 4068 | return bt_cb(skb)->req.start; |
9238f36a JH |
4069 | } |
4070 | ||
42c6b129 JH |
4071 | static void hci_resend_last(struct hci_dev *hdev) |
4072 | { | |
4073 | struct hci_command_hdr *sent; | |
4074 | struct sk_buff *skb; | |
4075 | u16 opcode; | |
4076 | ||
4077 | if (!hdev->sent_cmd) | |
4078 | return; | |
4079 | ||
4080 | sent = (void *) hdev->sent_cmd->data; | |
4081 | opcode = __le16_to_cpu(sent->opcode); | |
4082 | if (opcode == HCI_OP_RESET) | |
4083 | return; | |
4084 | ||
4085 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4086 | if (!skb) | |
4087 | return; | |
4088 | ||
4089 | skb_queue_head(&hdev->cmd_q, skb); | |
4090 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4091 | } | |
4092 | ||
e6214487 JH |
4093 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4094 | hci_req_complete_t *req_complete, | |
4095 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4096 | { |
9238f36a JH |
4097 | struct sk_buff *skb; |
4098 | unsigned long flags; | |
4099 | ||
4100 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4101 | ||
42c6b129 JH |
4102 | /* If the completed command doesn't match the last one that was |
4103 | * sent we need to do special handling of it. | |
9238f36a | 4104 | */ |
42c6b129 JH |
4105 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4106 | /* Some CSR based controllers generate a spontaneous | |
4107 | * reset complete event during init and any pending | |
4108 | * command will never be completed. In such a case we | |
4109 | * need to resend whatever was the last sent | |
4110 | * command. | |
4111 | */ | |
4112 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4113 | hci_resend_last(hdev); | |
4114 | ||
9238f36a | 4115 | return; |
42c6b129 | 4116 | } |
9238f36a JH |
4117 | |
4118 | /* If the command succeeded and there's still more commands in | |
4119 | * this request the request is not yet complete. | |
4120 | */ | |
4121 | if (!status && !hci_req_is_complete(hdev)) | |
4122 | return; | |
4123 | ||
4124 | /* If this was the last command in a request the complete | |
4125 | * callback would be found in hdev->sent_cmd instead of the | |
4126 | * command queue (hdev->cmd_q). | |
4127 | */ | |
e6214487 JH |
4128 | if (bt_cb(hdev->sent_cmd)->req.complete) { |
4129 | *req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
4130 | return; | |
4131 | } | |
53e21fbc | 4132 | |
e6214487 JH |
4133 | if (bt_cb(hdev->sent_cmd)->req.complete_skb) { |
4134 | *req_complete_skb = bt_cb(hdev->sent_cmd)->req.complete_skb; | |
4135 | return; | |
9238f36a JH |
4136 | } |
4137 | ||
4138 | /* Remove all pending commands belonging to this request */ | |
4139 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4140 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
db6e3e8d | 4141 | if (bt_cb(skb)->req.start) { |
9238f36a JH |
4142 | __skb_queue_head(&hdev->cmd_q, skb); |
4143 | break; | |
4144 | } | |
4145 | ||
e6214487 JH |
4146 | *req_complete = bt_cb(skb)->req.complete; |
4147 | *req_complete_skb = bt_cb(skb)->req.complete_skb; | |
9238f36a JH |
4148 | kfree_skb(skb); |
4149 | } | |
4150 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4151 | } |
4152 | ||
b78752cc | 4153 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4154 | { |
b78752cc | 4155 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4156 | struct sk_buff *skb; |
4157 | ||
4158 | BT_DBG("%s", hdev->name); | |
4159 | ||
1da177e4 | 4160 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4161 | /* Send copy to monitor */ |
4162 | hci_send_to_monitor(hdev, skb); | |
4163 | ||
1da177e4 LT |
4164 | if (atomic_read(&hdev->promisc)) { |
4165 | /* Send copy to the sockets */ | |
470fe1b5 | 4166 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4167 | } |
4168 | ||
d7a5a11d | 4169 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4170 | kfree_skb(skb); |
4171 | continue; | |
4172 | } | |
4173 | ||
4174 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4175 | /* Don't process data packets in this states. */ | |
0d48d939 | 4176 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4177 | case HCI_ACLDATA_PKT: |
4178 | case HCI_SCODATA_PKT: | |
4179 | kfree_skb(skb); | |
4180 | continue; | |
3ff50b79 | 4181 | } |
1da177e4 LT |
4182 | } |
4183 | ||
4184 | /* Process frame */ | |
0d48d939 | 4185 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4186 | case HCI_EVENT_PKT: |
b78752cc | 4187 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4188 | hci_event_packet(hdev, skb); |
4189 | break; | |
4190 | ||
4191 | case HCI_ACLDATA_PKT: | |
4192 | BT_DBG("%s ACL data packet", hdev->name); | |
4193 | hci_acldata_packet(hdev, skb); | |
4194 | break; | |
4195 | ||
4196 | case HCI_SCODATA_PKT: | |
4197 | BT_DBG("%s SCO data packet", hdev->name); | |
4198 | hci_scodata_packet(hdev, skb); | |
4199 | break; | |
4200 | ||
4201 | default: | |
4202 | kfree_skb(skb); | |
4203 | break; | |
4204 | } | |
4205 | } | |
1da177e4 LT |
4206 | } |
4207 | ||
c347b765 | 4208 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4209 | { |
c347b765 | 4210 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4211 | struct sk_buff *skb; |
4212 | ||
2104786b AE |
4213 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4214 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4215 | |
1da177e4 | 4216 | /* Send queued commands */ |
5a08ecce AE |
4217 | if (atomic_read(&hdev->cmd_cnt)) { |
4218 | skb = skb_dequeue(&hdev->cmd_q); | |
4219 | if (!skb) | |
4220 | return; | |
4221 | ||
7585b97a | 4222 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4223 | |
a675d7f1 | 4224 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4225 | if (hdev->sent_cmd) { |
1da177e4 | 4226 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4227 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4228 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4229 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4230 | else |
65cc2b49 MH |
4231 | schedule_delayed_work(&hdev->cmd_timer, |
4232 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4233 | } else { |
4234 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4235 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4236 | } |
4237 | } | |
4238 | } |