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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 JH |
42 | #include "smp.h" |
43 | ||
b78752cc | 44 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 45 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 46 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 47 | |
1da177e4 LT |
48 | /* HCI device list */ |
49 | LIST_HEAD(hci_dev_list); | |
50 | DEFINE_RWLOCK(hci_dev_list_lock); | |
51 | ||
52 | /* HCI callback list */ | |
53 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 54 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 55 | |
3df92b31 SL |
56 | /* HCI ID Numbering */ |
57 | static DEFINE_IDA(hci_index_ida); | |
58 | ||
899de765 MH |
59 | /* ----- HCI requests ----- */ |
60 | ||
61 | #define HCI_REQ_DONE 0 | |
62 | #define HCI_REQ_PEND 1 | |
63 | #define HCI_REQ_CANCELED 2 | |
64 | ||
65 | #define hci_req_lock(d) mutex_lock(&d->req_lock) | |
66 | #define hci_req_unlock(d) mutex_unlock(&d->req_lock) | |
67 | ||
1da177e4 LT |
68 | /* ---- HCI notifications ---- */ |
69 | ||
6516455d | 70 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 71 | { |
040030ef | 72 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
73 | } |
74 | ||
baf27f6e MH |
75 | /* ---- HCI debugfs entries ---- */ |
76 | ||
4b4148e9 MH |
77 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | struct hci_dev *hdev = file->private_data; | |
81 | char buf[3]; | |
82 | ||
b7cb93e5 | 83 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y': 'N'; |
4b4148e9 MH |
84 | buf[1] = '\n'; |
85 | buf[2] = '\0'; | |
86 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
87 | } | |
88 | ||
89 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
90 | size_t count, loff_t *ppos) | |
91 | { | |
92 | struct hci_dev *hdev = file->private_data; | |
93 | struct sk_buff *skb; | |
94 | char buf[32]; | |
95 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
96 | bool enable; | |
4b4148e9 MH |
97 | |
98 | if (!test_bit(HCI_UP, &hdev->flags)) | |
99 | return -ENETDOWN; | |
100 | ||
101 | if (copy_from_user(buf, user_buf, buf_size)) | |
102 | return -EFAULT; | |
103 | ||
104 | buf[buf_size] = '\0'; | |
105 | if (strtobool(buf, &enable)) | |
106 | return -EINVAL; | |
107 | ||
b7cb93e5 | 108 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
109 | return -EALREADY; |
110 | ||
111 | hci_req_lock(hdev); | |
112 | if (enable) | |
113 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
114 | HCI_CMD_TIMEOUT); | |
115 | else | |
116 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
117 | HCI_CMD_TIMEOUT); | |
118 | hci_req_unlock(hdev); | |
119 | ||
120 | if (IS_ERR(skb)) | |
121 | return PTR_ERR(skb); | |
122 | ||
4b4148e9 MH |
123 | kfree_skb(skb); |
124 | ||
b7cb93e5 | 125 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
126 | |
127 | return count; | |
128 | } | |
129 | ||
130 | static const struct file_operations dut_mode_fops = { | |
131 | .open = simple_open, | |
132 | .read = dut_mode_read, | |
133 | .write = dut_mode_write, | |
134 | .llseek = default_llseek, | |
135 | }; | |
136 | ||
1da177e4 LT |
137 | /* ---- HCI requests ---- */ |
138 | ||
f60cb305 JH |
139 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
140 | struct sk_buff *skb) | |
1da177e4 | 141 | { |
42c6b129 | 142 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
143 | |
144 | if (hdev->req_status == HCI_REQ_PEND) { | |
145 | hdev->req_result = result; | |
146 | hdev->req_status = HCI_REQ_DONE; | |
f60cb305 JH |
147 | if (skb) |
148 | hdev->req_skb = skb_get(skb); | |
1da177e4 LT |
149 | wake_up_interruptible(&hdev->req_wait_q); |
150 | } | |
151 | } | |
152 | ||
153 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
154 | { | |
155 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
156 | ||
157 | if (hdev->req_status == HCI_REQ_PEND) { | |
158 | hdev->req_result = err; | |
159 | hdev->req_status = HCI_REQ_CANCELED; | |
160 | wake_up_interruptible(&hdev->req_wait_q); | |
161 | } | |
162 | } | |
163 | ||
7b1abbbe | 164 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 165 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
166 | { |
167 | DECLARE_WAITQUEUE(wait, current); | |
168 | struct hci_request req; | |
f60cb305 | 169 | struct sk_buff *skb; |
75e84b7c JH |
170 | int err = 0; |
171 | ||
172 | BT_DBG("%s", hdev->name); | |
173 | ||
174 | hci_req_init(&req, hdev); | |
175 | ||
7b1abbbe | 176 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
177 | |
178 | hdev->req_status = HCI_REQ_PEND; | |
179 | ||
75e84b7c JH |
180 | add_wait_queue(&hdev->req_wait_q, &wait); |
181 | set_current_state(TASK_INTERRUPTIBLE); | |
182 | ||
f60cb305 | 183 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
039fada5 CP |
184 | if (err < 0) { |
185 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
22a3ceab | 186 | set_current_state(TASK_RUNNING); |
039fada5 CP |
187 | return ERR_PTR(err); |
188 | } | |
189 | ||
75e84b7c JH |
190 | schedule_timeout(timeout); |
191 | ||
192 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
193 | ||
194 | if (signal_pending(current)) | |
195 | return ERR_PTR(-EINTR); | |
196 | ||
197 | switch (hdev->req_status) { | |
198 | case HCI_REQ_DONE: | |
199 | err = -bt_to_errno(hdev->req_result); | |
200 | break; | |
201 | ||
202 | case HCI_REQ_CANCELED: | |
203 | err = -hdev->req_result; | |
204 | break; | |
205 | ||
206 | default: | |
207 | err = -ETIMEDOUT; | |
208 | break; | |
209 | } | |
210 | ||
211 | hdev->req_status = hdev->req_result = 0; | |
f60cb305 JH |
212 | skb = hdev->req_skb; |
213 | hdev->req_skb = NULL; | |
75e84b7c JH |
214 | |
215 | BT_DBG("%s end: err %d", hdev->name, err); | |
216 | ||
f60cb305 JH |
217 | if (err < 0) { |
218 | kfree_skb(skb); | |
75e84b7c | 219 | return ERR_PTR(err); |
f60cb305 | 220 | } |
75e84b7c | 221 | |
757aa0b5 JH |
222 | if (!skb) |
223 | return ERR_PTR(-ENODATA); | |
224 | ||
225 | return skb; | |
7b1abbbe JH |
226 | } |
227 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
228 | ||
229 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 230 | const void *param, u32 timeout) |
7b1abbbe JH |
231 | { |
232 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
233 | } |
234 | EXPORT_SYMBOL(__hci_cmd_sync); | |
235 | ||
1da177e4 | 236 | /* Execute request and wait for completion. */ |
01178cd4 | 237 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
238 | void (*func)(struct hci_request *req, |
239 | unsigned long opt), | |
01178cd4 | 240 | unsigned long opt, __u32 timeout) |
1da177e4 | 241 | { |
42c6b129 | 242 | struct hci_request req; |
1da177e4 LT |
243 | DECLARE_WAITQUEUE(wait, current); |
244 | int err = 0; | |
245 | ||
246 | BT_DBG("%s start", hdev->name); | |
247 | ||
42c6b129 JH |
248 | hci_req_init(&req, hdev); |
249 | ||
1da177e4 LT |
250 | hdev->req_status = HCI_REQ_PEND; |
251 | ||
42c6b129 | 252 | func(&req, opt); |
53cce22d | 253 | |
039fada5 CP |
254 | add_wait_queue(&hdev->req_wait_q, &wait); |
255 | set_current_state(TASK_INTERRUPTIBLE); | |
256 | ||
f60cb305 | 257 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
42c6b129 | 258 | if (err < 0) { |
53cce22d | 259 | hdev->req_status = 0; |
920c8300 | 260 | |
039fada5 | 261 | remove_wait_queue(&hdev->req_wait_q, &wait); |
22a3ceab | 262 | set_current_state(TASK_RUNNING); |
039fada5 | 263 | |
920c8300 AG |
264 | /* ENODATA means the HCI request command queue is empty. |
265 | * This can happen when a request with conditionals doesn't | |
266 | * trigger any commands to be sent. This is normal behavior | |
267 | * and should not trigger an error return. | |
42c6b129 | 268 | */ |
920c8300 AG |
269 | if (err == -ENODATA) |
270 | return 0; | |
271 | ||
272 | return err; | |
53cce22d JH |
273 | } |
274 | ||
1da177e4 LT |
275 | schedule_timeout(timeout); |
276 | ||
277 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
278 | ||
279 | if (signal_pending(current)) | |
280 | return -EINTR; | |
281 | ||
282 | switch (hdev->req_status) { | |
283 | case HCI_REQ_DONE: | |
e175072f | 284 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
285 | break; |
286 | ||
287 | case HCI_REQ_CANCELED: | |
288 | err = -hdev->req_result; | |
289 | break; | |
290 | ||
291 | default: | |
292 | err = -ETIMEDOUT; | |
293 | break; | |
3ff50b79 | 294 | } |
1da177e4 | 295 | |
a5040efa | 296 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
297 | |
298 | BT_DBG("%s end: err %d", hdev->name, err); | |
299 | ||
300 | return err; | |
301 | } | |
302 | ||
01178cd4 | 303 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
304 | void (*req)(struct hci_request *req, |
305 | unsigned long opt), | |
01178cd4 | 306 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
307 | { |
308 | int ret; | |
309 | ||
7c6a329e MH |
310 | if (!test_bit(HCI_UP, &hdev->flags)) |
311 | return -ENETDOWN; | |
312 | ||
1da177e4 LT |
313 | /* Serialize all requests */ |
314 | hci_req_lock(hdev); | |
01178cd4 | 315 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
316 | hci_req_unlock(hdev); |
317 | ||
318 | return ret; | |
319 | } | |
320 | ||
42c6b129 | 321 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 322 | { |
42c6b129 | 323 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
324 | |
325 | /* Reset device */ | |
42c6b129 JH |
326 | set_bit(HCI_RESET, &req->hdev->flags); |
327 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
328 | } |
329 | ||
42c6b129 | 330 | static void bredr_init(struct hci_request *req) |
1da177e4 | 331 | { |
42c6b129 | 332 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 333 | |
1da177e4 | 334 | /* Read Local Supported Features */ |
42c6b129 | 335 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 336 | |
1143e5a6 | 337 | /* Read Local Version */ |
42c6b129 | 338 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
339 | |
340 | /* Read BD Address */ | |
42c6b129 | 341 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
342 | } |
343 | ||
0af801b9 | 344 | static void amp_init1(struct hci_request *req) |
e61ef499 | 345 | { |
42c6b129 | 346 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 347 | |
e61ef499 | 348 | /* Read Local Version */ |
42c6b129 | 349 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 350 | |
f6996cfe MH |
351 | /* Read Local Supported Commands */ |
352 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
353 | ||
6bcbc489 | 354 | /* Read Local AMP Info */ |
42c6b129 | 355 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
356 | |
357 | /* Read Data Blk size */ | |
42c6b129 | 358 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 359 | |
f38ba941 MH |
360 | /* Read Flow Control Mode */ |
361 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
362 | ||
7528ca1c MH |
363 | /* Read Location Data */ |
364 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
365 | } |
366 | ||
0af801b9 JH |
367 | static void amp_init2(struct hci_request *req) |
368 | { | |
369 | /* Read Local Supported Features. Not all AMP controllers | |
370 | * support this so it's placed conditionally in the second | |
371 | * stage init. | |
372 | */ | |
373 | if (req->hdev->commands[14] & 0x20) | |
374 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
375 | } | |
376 | ||
42c6b129 | 377 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 378 | { |
42c6b129 | 379 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
380 | |
381 | BT_DBG("%s %ld", hdev->name, opt); | |
382 | ||
11778716 AE |
383 | /* Reset */ |
384 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 385 | hci_reset_req(req, 0); |
11778716 | 386 | |
e61ef499 AE |
387 | switch (hdev->dev_type) { |
388 | case HCI_BREDR: | |
42c6b129 | 389 | bredr_init(req); |
e61ef499 AE |
390 | break; |
391 | ||
392 | case HCI_AMP: | |
0af801b9 | 393 | amp_init1(req); |
e61ef499 AE |
394 | break; |
395 | ||
396 | default: | |
397 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
398 | break; | |
399 | } | |
e61ef499 AE |
400 | } |
401 | ||
42c6b129 | 402 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 403 | { |
2177bab5 JH |
404 | __le16 param; |
405 | __u8 flt_type; | |
406 | ||
407 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 408 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
409 | |
410 | /* Read Class of Device */ | |
42c6b129 | 411 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
412 | |
413 | /* Read Local Name */ | |
42c6b129 | 414 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
415 | |
416 | /* Read Voice Setting */ | |
42c6b129 | 417 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 418 | |
b4cb9fb2 MH |
419 | /* Read Number of Supported IAC */ |
420 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
421 | ||
4b836f39 MH |
422 | /* Read Current IAC LAP */ |
423 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
424 | ||
2177bab5 JH |
425 | /* Clear Event Filters */ |
426 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 427 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
428 | |
429 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 430 | param = cpu_to_le16(0x7d00); |
42c6b129 | 431 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
432 | } |
433 | ||
42c6b129 | 434 | static void le_setup(struct hci_request *req) |
2177bab5 | 435 | { |
c73eee91 JH |
436 | struct hci_dev *hdev = req->hdev; |
437 | ||
2177bab5 | 438 | /* Read LE Buffer Size */ |
42c6b129 | 439 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
440 | |
441 | /* Read LE Local Supported Features */ | |
42c6b129 | 442 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 443 | |
747d3f03 MH |
444 | /* Read LE Supported States */ |
445 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
446 | ||
2177bab5 | 447 | /* Read LE White List Size */ |
42c6b129 | 448 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 449 | |
747d3f03 MH |
450 | /* Clear LE White List */ |
451 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
452 | |
453 | /* LE-only controllers have LE implicitly enabled */ | |
454 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 455 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
456 | } |
457 | ||
42c6b129 | 458 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 459 | { |
42c6b129 JH |
460 | struct hci_dev *hdev = req->hdev; |
461 | ||
2177bab5 JH |
462 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
463 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
464 | * command otherwise. | |
465 | */ | |
466 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
467 | ||
468 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
469 | * any event mask for pre 1.2 devices. | |
470 | */ | |
471 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
472 | return; | |
473 | ||
474 | if (lmp_bredr_capable(hdev)) { | |
475 | events[4] |= 0x01; /* Flow Specification Complete */ | |
476 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
477 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
478 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
479 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
480 | } else { |
481 | /* Use a different default for LE-only devices */ | |
482 | memset(events, 0, sizeof(events)); | |
483 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
484 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
485 | events[1] |= 0x20; /* Command Complete */ | |
486 | events[1] |= 0x40; /* Command Status */ | |
487 | events[1] |= 0x80; /* Hardware Error */ | |
488 | events[2] |= 0x04; /* Number of Completed Packets */ | |
489 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
490 | |
491 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
492 | events[0] |= 0x80; /* Encryption Change */ | |
493 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
494 | } | |
2177bab5 JH |
495 | } |
496 | ||
497 | if (lmp_inq_rssi_capable(hdev)) | |
498 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
499 | ||
500 | if (lmp_sniffsubr_capable(hdev)) | |
501 | events[5] |= 0x20; /* Sniff Subrating */ | |
502 | ||
503 | if (lmp_pause_enc_capable(hdev)) | |
504 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
505 | ||
506 | if (lmp_ext_inq_capable(hdev)) | |
507 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
508 | ||
509 | if (lmp_no_flush_capable(hdev)) | |
510 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
511 | ||
512 | if (lmp_lsto_capable(hdev)) | |
513 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
514 | ||
515 | if (lmp_ssp_capable(hdev)) { | |
516 | events[6] |= 0x01; /* IO Capability Request */ | |
517 | events[6] |= 0x02; /* IO Capability Response */ | |
518 | events[6] |= 0x04; /* User Confirmation Request */ | |
519 | events[6] |= 0x08; /* User Passkey Request */ | |
520 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
521 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
522 | events[7] |= 0x04; /* User Passkey Notification */ | |
523 | events[7] |= 0x08; /* Keypress Notification */ | |
524 | events[7] |= 0x10; /* Remote Host Supported | |
525 | * Features Notification | |
526 | */ | |
527 | } | |
528 | ||
529 | if (lmp_le_capable(hdev)) | |
530 | events[7] |= 0x20; /* LE Meta-Event */ | |
531 | ||
42c6b129 | 532 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
533 | } |
534 | ||
42c6b129 | 535 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 536 | { |
42c6b129 JH |
537 | struct hci_dev *hdev = req->hdev; |
538 | ||
0af801b9 JH |
539 | if (hdev->dev_type == HCI_AMP) |
540 | return amp_init2(req); | |
541 | ||
2177bab5 | 542 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 543 | bredr_setup(req); |
56f87901 | 544 | else |
a358dc11 | 545 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
546 | |
547 | if (lmp_le_capable(hdev)) | |
42c6b129 | 548 | le_setup(req); |
2177bab5 | 549 | |
0f3adeae MH |
550 | /* All Bluetooth 1.2 and later controllers should support the |
551 | * HCI command for reading the local supported commands. | |
552 | * | |
553 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
554 | * but do not have support for this command. If that is the case, | |
555 | * the driver can quirk the behavior and skip reading the local | |
556 | * supported commands. | |
3f8e2d75 | 557 | */ |
0f3adeae MH |
558 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
559 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 560 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
561 | |
562 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
563 | /* When SSP is available, then the host features page |
564 | * should also be available as well. However some | |
565 | * controllers list the max_page as 0 as long as SSP | |
566 | * has not been enabled. To achieve proper debugging | |
567 | * output, force the minimum max_page to 1 at least. | |
568 | */ | |
569 | hdev->max_page = 0x01; | |
570 | ||
d7a5a11d | 571 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 572 | u8 mode = 0x01; |
574ea3c7 | 573 | |
42c6b129 JH |
574 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
575 | sizeof(mode), &mode); | |
2177bab5 JH |
576 | } else { |
577 | struct hci_cp_write_eir cp; | |
578 | ||
579 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
580 | memset(&cp, 0, sizeof(cp)); | |
581 | ||
42c6b129 | 582 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
583 | } |
584 | } | |
585 | ||
043ec9bf MH |
586 | if (lmp_inq_rssi_capable(hdev) || |
587 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
588 | u8 mode; |
589 | ||
590 | /* If Extended Inquiry Result events are supported, then | |
591 | * they are clearly preferred over Inquiry Result with RSSI | |
592 | * events. | |
593 | */ | |
594 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
595 | ||
596 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
597 | } | |
2177bab5 JH |
598 | |
599 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 600 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
601 | |
602 | if (lmp_ext_feat_capable(hdev)) { | |
603 | struct hci_cp_read_local_ext_features cp; | |
604 | ||
605 | cp.page = 0x01; | |
42c6b129 JH |
606 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
607 | sizeof(cp), &cp); | |
2177bab5 JH |
608 | } |
609 | ||
d7a5a11d | 610 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 611 | u8 enable = 1; |
42c6b129 JH |
612 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
613 | &enable); | |
2177bab5 JH |
614 | } |
615 | } | |
616 | ||
42c6b129 | 617 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 618 | { |
42c6b129 | 619 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
620 | struct hci_cp_write_def_link_policy cp; |
621 | u16 link_policy = 0; | |
622 | ||
623 | if (lmp_rswitch_capable(hdev)) | |
624 | link_policy |= HCI_LP_RSWITCH; | |
625 | if (lmp_hold_capable(hdev)) | |
626 | link_policy |= HCI_LP_HOLD; | |
627 | if (lmp_sniff_capable(hdev)) | |
628 | link_policy |= HCI_LP_SNIFF; | |
629 | if (lmp_park_capable(hdev)) | |
630 | link_policy |= HCI_LP_PARK; | |
631 | ||
632 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 633 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
634 | } |
635 | ||
42c6b129 | 636 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 637 | { |
42c6b129 | 638 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
639 | struct hci_cp_write_le_host_supported cp; |
640 | ||
c73eee91 JH |
641 | /* LE-only devices do not support explicit enablement */ |
642 | if (!lmp_bredr_capable(hdev)) | |
643 | return; | |
644 | ||
2177bab5 JH |
645 | memset(&cp, 0, sizeof(cp)); |
646 | ||
d7a5a11d | 647 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 648 | cp.le = 0x01; |
32226e4f | 649 | cp.simul = 0x00; |
2177bab5 JH |
650 | } |
651 | ||
652 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
653 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
654 | &cp); | |
2177bab5 JH |
655 | } |
656 | ||
d62e6d67 JH |
657 | static void hci_set_event_mask_page_2(struct hci_request *req) |
658 | { | |
659 | struct hci_dev *hdev = req->hdev; | |
660 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
661 | ||
662 | /* If Connectionless Slave Broadcast master role is supported | |
663 | * enable all necessary events for it. | |
664 | */ | |
53b834d2 | 665 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
666 | events[1] |= 0x40; /* Triggered Clock Capture */ |
667 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
668 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
669 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
670 | } | |
671 | ||
672 | /* If Connectionless Slave Broadcast slave role is supported | |
673 | * enable all necessary events for it. | |
674 | */ | |
53b834d2 | 675 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
676 | events[2] |= 0x01; /* Synchronization Train Received */ |
677 | events[2] |= 0x02; /* CSB Receive */ | |
678 | events[2] |= 0x04; /* CSB Timeout */ | |
679 | events[2] |= 0x08; /* Truncated Page Complete */ | |
680 | } | |
681 | ||
40c59fcb | 682 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 683 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
684 | events[2] |= 0x80; |
685 | ||
d62e6d67 JH |
686 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
687 | } | |
688 | ||
42c6b129 | 689 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 690 | { |
42c6b129 | 691 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 692 | u8 p; |
42c6b129 | 693 | |
0da71f1b MH |
694 | hci_setup_event_mask(req); |
695 | ||
48ce62c4 MH |
696 | if (hdev->commands[6] & 0x20) { |
697 | struct hci_cp_read_stored_link_key cp; | |
698 | ||
699 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
700 | cp.read_all = 0x01; | |
701 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
702 | } | |
703 | ||
2177bab5 | 704 | if (hdev->commands[5] & 0x10) |
42c6b129 | 705 | hci_setup_link_policy(req); |
2177bab5 | 706 | |
417287de MH |
707 | if (hdev->commands[8] & 0x01) |
708 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
709 | ||
710 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
711 | * support the Read Page Scan Type command. Check support for | |
712 | * this command in the bit mask of supported commands. | |
713 | */ | |
714 | if (hdev->commands[13] & 0x01) | |
715 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
716 | ||
9193c6e8 AG |
717 | if (lmp_le_capable(hdev)) { |
718 | u8 events[8]; | |
719 | ||
720 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
721 | events[0] = 0x0f; |
722 | ||
723 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
724 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
725 | |
726 | /* If controller supports the Connection Parameters Request | |
727 | * Link Layer Procedure, enable the corresponding event. | |
728 | */ | |
729 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
730 | events[0] |= 0x20; /* LE Remote Connection | |
731 | * Parameter Request | |
732 | */ | |
733 | ||
a9f6068e MH |
734 | /* If the controller supports the Data Length Extension |
735 | * feature, enable the corresponding event. | |
736 | */ | |
737 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
738 | events[0] |= 0x40; /* LE Data Length Change */ | |
739 | ||
4b71bba4 MH |
740 | /* If the controller supports Extended Scanner Filter |
741 | * Policies, enable the correspondig event. | |
742 | */ | |
743 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
744 | events[1] |= 0x04; /* LE Direct Advertising | |
745 | * Report | |
746 | */ | |
747 | ||
5a34bd5f MH |
748 | /* If the controller supports the LE Read Local P-256 |
749 | * Public Key command, enable the corresponding event. | |
750 | */ | |
751 | if (hdev->commands[34] & 0x02) | |
752 | events[0] |= 0x80; /* LE Read Local P-256 | |
753 | * Public Key Complete | |
754 | */ | |
755 | ||
756 | /* If the controller supports the LE Generate DHKey | |
757 | * command, enable the corresponding event. | |
758 | */ | |
759 | if (hdev->commands[34] & 0x04) | |
760 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
761 | ||
9193c6e8 AG |
762 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
763 | events); | |
764 | ||
15a49cca MH |
765 | if (hdev->commands[25] & 0x40) { |
766 | /* Read LE Advertising Channel TX Power */ | |
767 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
768 | } | |
769 | ||
a9f6068e MH |
770 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
771 | /* Read LE Maximum Data Length */ | |
772 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
773 | ||
774 | /* Read LE Suggested Default Data Length */ | |
775 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
776 | } | |
777 | ||
42c6b129 | 778 | hci_set_le_support(req); |
9193c6e8 | 779 | } |
d2c5d77f JH |
780 | |
781 | /* Read features beyond page 1 if available */ | |
782 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
783 | struct hci_cp_read_local_ext_features cp; | |
784 | ||
785 | cp.page = p; | |
786 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
787 | sizeof(cp), &cp); | |
788 | } | |
2177bab5 JH |
789 | } |
790 | ||
5d4e7e8d JH |
791 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
792 | { | |
793 | struct hci_dev *hdev = req->hdev; | |
794 | ||
36f260ce MH |
795 | /* Some Broadcom based Bluetooth controllers do not support the |
796 | * Delete Stored Link Key command. They are clearly indicating its | |
797 | * absence in the bit mask of supported commands. | |
798 | * | |
799 | * Check the supported commands and only if the the command is marked | |
800 | * as supported send it. If not supported assume that the controller | |
801 | * does not have actual support for stored link keys which makes this | |
802 | * command redundant anyway. | |
803 | * | |
804 | * Some controllers indicate that they support handling deleting | |
805 | * stored link keys, but they don't. The quirk lets a driver | |
806 | * just disable this command. | |
807 | */ | |
808 | if (hdev->commands[6] & 0x80 && | |
809 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
810 | struct hci_cp_delete_stored_link_key cp; | |
811 | ||
812 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
813 | cp.delete_all = 0x01; | |
814 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
815 | sizeof(cp), &cp); | |
816 | } | |
817 | ||
d62e6d67 JH |
818 | /* Set event mask page 2 if the HCI command for it is supported */ |
819 | if (hdev->commands[22] & 0x04) | |
820 | hci_set_event_mask_page_2(req); | |
821 | ||
109e3191 MH |
822 | /* Read local codec list if the HCI command is supported */ |
823 | if (hdev->commands[29] & 0x20) | |
824 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
825 | ||
f4fe73ed MH |
826 | /* Get MWS transport configuration if the HCI command is supported */ |
827 | if (hdev->commands[30] & 0x08) | |
828 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
829 | ||
5d4e7e8d | 830 | /* Check for Synchronization Train support */ |
53b834d2 | 831 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 832 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
833 | |
834 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 835 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 836 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 837 | u8 support = 0x01; |
574ea3c7 | 838 | |
a6d0d690 MH |
839 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
840 | sizeof(support), &support); | |
841 | } | |
5d4e7e8d JH |
842 | } |
843 | ||
2177bab5 JH |
844 | static int __hci_init(struct hci_dev *hdev) |
845 | { | |
846 | int err; | |
847 | ||
848 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
849 | if (err < 0) | |
850 | return err; | |
851 | ||
4b4148e9 MH |
852 | /* The Device Under Test (DUT) mode is special and available for |
853 | * all controller types. So just create it early on. | |
854 | */ | |
d7a5a11d | 855 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
4b4148e9 MH |
856 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, |
857 | &dut_mode_fops); | |
858 | } | |
859 | ||
0af801b9 JH |
860 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
861 | if (err < 0) | |
862 | return err; | |
863 | ||
2177bab5 JH |
864 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
865 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 866 | * first two stages of init. |
2177bab5 JH |
867 | */ |
868 | if (hdev->dev_type != HCI_BREDR) | |
869 | return 0; | |
870 | ||
5d4e7e8d JH |
871 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
872 | if (err < 0) | |
873 | return err; | |
874 | ||
baf27f6e MH |
875 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
876 | if (err < 0) | |
877 | return err; | |
878 | ||
ec6cef9c MH |
879 | /* This function is only called when the controller is actually in |
880 | * configured state. When the controller is marked as unconfigured, | |
881 | * this initialization procedure is not run. | |
882 | * | |
883 | * It means that it is possible that a controller runs through its | |
884 | * setup phase and then discovers missing settings. If that is the | |
885 | * case, then this function will not be called. It then will only | |
886 | * be called during the config phase. | |
887 | * | |
888 | * So only when in setup phase or config phase, create the debugfs | |
889 | * entries and register the SMP channels. | |
baf27f6e | 890 | */ |
d7a5a11d MH |
891 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
892 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
893 | return 0; |
894 | ||
60c5f5fb MH |
895 | hci_debugfs_create_common(hdev); |
896 | ||
71c3b60e | 897 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 898 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 899 | |
162a3bac | 900 | if (lmp_le_capable(hdev)) |
60c5f5fb | 901 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 902 | |
baf27f6e | 903 | return 0; |
2177bab5 JH |
904 | } |
905 | ||
0ebca7d6 MH |
906 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
907 | { | |
908 | struct hci_dev *hdev = req->hdev; | |
909 | ||
910 | BT_DBG("%s %ld", hdev->name, opt); | |
911 | ||
912 | /* Reset */ | |
913 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
914 | hci_reset_req(req, 0); | |
915 | ||
916 | /* Read Local Version */ | |
917 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
918 | ||
919 | /* Read BD Address */ | |
920 | if (hdev->set_bdaddr) | |
921 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
922 | } | |
923 | ||
924 | static int __hci_unconf_init(struct hci_dev *hdev) | |
925 | { | |
926 | int err; | |
927 | ||
cc78b44b MH |
928 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
929 | return 0; | |
930 | ||
0ebca7d6 MH |
931 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
932 | if (err < 0) | |
933 | return err; | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
42c6b129 | 938 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
939 | { |
940 | __u8 scan = opt; | |
941 | ||
42c6b129 | 942 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
943 | |
944 | /* Inquiry and Page scans */ | |
42c6b129 | 945 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
946 | } |
947 | ||
42c6b129 | 948 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
949 | { |
950 | __u8 auth = opt; | |
951 | ||
42c6b129 | 952 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
953 | |
954 | /* Authentication */ | |
42c6b129 | 955 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
956 | } |
957 | ||
42c6b129 | 958 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
959 | { |
960 | __u8 encrypt = opt; | |
961 | ||
42c6b129 | 962 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 963 | |
e4e8e37c | 964 | /* Encryption */ |
42c6b129 | 965 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
966 | } |
967 | ||
42c6b129 | 968 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
969 | { |
970 | __le16 policy = cpu_to_le16(opt); | |
971 | ||
42c6b129 | 972 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
973 | |
974 | /* Default link policy */ | |
42c6b129 | 975 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
976 | } |
977 | ||
8e87d142 | 978 | /* Get HCI device by index. |
1da177e4 LT |
979 | * Device is held on return. */ |
980 | struct hci_dev *hci_dev_get(int index) | |
981 | { | |
8035ded4 | 982 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
983 | |
984 | BT_DBG("%d", index); | |
985 | ||
986 | if (index < 0) | |
987 | return NULL; | |
988 | ||
989 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 990 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
991 | if (d->id == index) { |
992 | hdev = hci_dev_hold(d); | |
993 | break; | |
994 | } | |
995 | } | |
996 | read_unlock(&hci_dev_list_lock); | |
997 | return hdev; | |
998 | } | |
1da177e4 LT |
999 | |
1000 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1001 | |
30dc78e1 JH |
1002 | bool hci_discovery_active(struct hci_dev *hdev) |
1003 | { | |
1004 | struct discovery_state *discov = &hdev->discovery; | |
1005 | ||
6fbe195d | 1006 | switch (discov->state) { |
343f935b | 1007 | case DISCOVERY_FINDING: |
6fbe195d | 1008 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1009 | return true; |
1010 | ||
6fbe195d AG |
1011 | default: |
1012 | return false; | |
1013 | } | |
30dc78e1 JH |
1014 | } |
1015 | ||
ff9ef578 JH |
1016 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1017 | { | |
bb3e0a33 JH |
1018 | int old_state = hdev->discovery.state; |
1019 | ||
ff9ef578 JH |
1020 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1021 | ||
bb3e0a33 | 1022 | if (old_state == state) |
ff9ef578 JH |
1023 | return; |
1024 | ||
bb3e0a33 JH |
1025 | hdev->discovery.state = state; |
1026 | ||
ff9ef578 JH |
1027 | switch (state) { |
1028 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1029 | hci_update_background_scan(hdev); |
1030 | ||
bb3e0a33 | 1031 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1032 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1033 | break; |
1034 | case DISCOVERY_STARTING: | |
1035 | break; | |
343f935b | 1036 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1037 | mgmt_discovering(hdev, 1); |
1038 | break; | |
30dc78e1 JH |
1039 | case DISCOVERY_RESOLVING: |
1040 | break; | |
ff9ef578 JH |
1041 | case DISCOVERY_STOPPING: |
1042 | break; | |
1043 | } | |
ff9ef578 JH |
1044 | } |
1045 | ||
1f9b9a5d | 1046 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1047 | { |
30883512 | 1048 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1049 | struct inquiry_entry *p, *n; |
1da177e4 | 1050 | |
561aafbc JH |
1051 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1052 | list_del(&p->all); | |
b57c1a56 | 1053 | kfree(p); |
1da177e4 | 1054 | } |
561aafbc JH |
1055 | |
1056 | INIT_LIST_HEAD(&cache->unknown); | |
1057 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1058 | } |
1059 | ||
a8c5fb1a GP |
1060 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1061 | bdaddr_t *bdaddr) | |
1da177e4 | 1062 | { |
30883512 | 1063 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1064 | struct inquiry_entry *e; |
1065 | ||
6ed93dc6 | 1066 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1067 | |
561aafbc JH |
1068 | list_for_each_entry(e, &cache->all, all) { |
1069 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1070 | return e; | |
1071 | } | |
1072 | ||
1073 | return NULL; | |
1074 | } | |
1075 | ||
1076 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1077 | bdaddr_t *bdaddr) |
561aafbc | 1078 | { |
30883512 | 1079 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1080 | struct inquiry_entry *e; |
1081 | ||
6ed93dc6 | 1082 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1083 | |
1084 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1085 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1086 | return e; |
1087 | } | |
1088 | ||
1089 | return NULL; | |
1da177e4 LT |
1090 | } |
1091 | ||
30dc78e1 | 1092 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1093 | bdaddr_t *bdaddr, |
1094 | int state) | |
30dc78e1 JH |
1095 | { |
1096 | struct discovery_state *cache = &hdev->discovery; | |
1097 | struct inquiry_entry *e; | |
1098 | ||
6ed93dc6 | 1099 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1100 | |
1101 | list_for_each_entry(e, &cache->resolve, list) { | |
1102 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1103 | return e; | |
1104 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1105 | return e; | |
1106 | } | |
1107 | ||
1108 | return NULL; | |
1109 | } | |
1110 | ||
a3d4e20a | 1111 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1112 | struct inquiry_entry *ie) |
a3d4e20a JH |
1113 | { |
1114 | struct discovery_state *cache = &hdev->discovery; | |
1115 | struct list_head *pos = &cache->resolve; | |
1116 | struct inquiry_entry *p; | |
1117 | ||
1118 | list_del(&ie->list); | |
1119 | ||
1120 | list_for_each_entry(p, &cache->resolve, list) { | |
1121 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1122 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1123 | break; |
1124 | pos = &p->list; | |
1125 | } | |
1126 | ||
1127 | list_add(&ie->list, pos); | |
1128 | } | |
1129 | ||
af58925c MH |
1130 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1131 | bool name_known) | |
1da177e4 | 1132 | { |
30883512 | 1133 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1134 | struct inquiry_entry *ie; |
af58925c | 1135 | u32 flags = 0; |
1da177e4 | 1136 | |
6ed93dc6 | 1137 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1138 | |
6928a924 | 1139 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1140 | |
af58925c MH |
1141 | if (!data->ssp_mode) |
1142 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1143 | |
70f23020 | 1144 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1145 | if (ie) { |
af58925c MH |
1146 | if (!ie->data.ssp_mode) |
1147 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1148 | |
a3d4e20a | 1149 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1150 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1151 | ie->data.rssi = data->rssi; |
1152 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1153 | } | |
1154 | ||
561aafbc | 1155 | goto update; |
a3d4e20a | 1156 | } |
561aafbc JH |
1157 | |
1158 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1159 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1160 | if (!ie) { |
1161 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1162 | goto done; | |
1163 | } | |
561aafbc JH |
1164 | |
1165 | list_add(&ie->all, &cache->all); | |
1166 | ||
1167 | if (name_known) { | |
1168 | ie->name_state = NAME_KNOWN; | |
1169 | } else { | |
1170 | ie->name_state = NAME_NOT_KNOWN; | |
1171 | list_add(&ie->list, &cache->unknown); | |
1172 | } | |
70f23020 | 1173 | |
561aafbc JH |
1174 | update: |
1175 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1176 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1177 | ie->name_state = NAME_KNOWN; |
1178 | list_del(&ie->list); | |
1da177e4 LT |
1179 | } |
1180 | ||
70f23020 AE |
1181 | memcpy(&ie->data, data, sizeof(*data)); |
1182 | ie->timestamp = jiffies; | |
1da177e4 | 1183 | cache->timestamp = jiffies; |
3175405b JH |
1184 | |
1185 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1186 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1187 | |
af58925c MH |
1188 | done: |
1189 | return flags; | |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1193 | { | |
30883512 | 1194 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1195 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1196 | struct inquiry_entry *e; | |
1197 | int copied = 0; | |
1198 | ||
561aafbc | 1199 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1200 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1201 | |
1202 | if (copied >= num) | |
1203 | break; | |
1204 | ||
1da177e4 LT |
1205 | bacpy(&info->bdaddr, &data->bdaddr); |
1206 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1207 | info->pscan_period_mode = data->pscan_period_mode; | |
1208 | info->pscan_mode = data->pscan_mode; | |
1209 | memcpy(info->dev_class, data->dev_class, 3); | |
1210 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1211 | |
1da177e4 | 1212 | info++; |
b57c1a56 | 1213 | copied++; |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | BT_DBG("cache %p, copied %d", cache, copied); | |
1217 | return copied; | |
1218 | } | |
1219 | ||
42c6b129 | 1220 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1221 | { |
1222 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1223 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1224 | struct hci_cp_inquiry cp; |
1225 | ||
1226 | BT_DBG("%s", hdev->name); | |
1227 | ||
1228 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1229 | return; | |
1230 | ||
1231 | /* Start Inquiry */ | |
1232 | memcpy(&cp.lap, &ir->lap, 3); | |
1233 | cp.length = ir->length; | |
1234 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1235 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1236 | } |
1237 | ||
1238 | int hci_inquiry(void __user *arg) | |
1239 | { | |
1240 | __u8 __user *ptr = arg; | |
1241 | struct hci_inquiry_req ir; | |
1242 | struct hci_dev *hdev; | |
1243 | int err = 0, do_inquiry = 0, max_rsp; | |
1244 | long timeo; | |
1245 | __u8 *buf; | |
1246 | ||
1247 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1248 | return -EFAULT; | |
1249 | ||
5a08ecce AE |
1250 | hdev = hci_dev_get(ir.dev_id); |
1251 | if (!hdev) | |
1da177e4 LT |
1252 | return -ENODEV; |
1253 | ||
d7a5a11d | 1254 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1255 | err = -EBUSY; |
1256 | goto done; | |
1257 | } | |
1258 | ||
d7a5a11d | 1259 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1260 | err = -EOPNOTSUPP; |
1261 | goto done; | |
1262 | } | |
1263 | ||
5b69bef5 MH |
1264 | if (hdev->dev_type != HCI_BREDR) { |
1265 | err = -EOPNOTSUPP; | |
1266 | goto done; | |
1267 | } | |
1268 | ||
d7a5a11d | 1269 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1270 | err = -EOPNOTSUPP; |
1271 | goto done; | |
1272 | } | |
1273 | ||
09fd0de5 | 1274 | hci_dev_lock(hdev); |
8e87d142 | 1275 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1276 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1277 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1278 | do_inquiry = 1; |
1279 | } | |
09fd0de5 | 1280 | hci_dev_unlock(hdev); |
1da177e4 | 1281 | |
04837f64 | 1282 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1283 | |
1284 | if (do_inquiry) { | |
01178cd4 JH |
1285 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1286 | timeo); | |
70f23020 AE |
1287 | if (err < 0) |
1288 | goto done; | |
3e13fa1e AG |
1289 | |
1290 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1291 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1292 | */ | |
74316201 | 1293 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1294 | TASK_INTERRUPTIBLE)) |
1295 | return -EINTR; | |
70f23020 | 1296 | } |
1da177e4 | 1297 | |
8fc9ced3 GP |
1298 | /* for unlimited number of responses we will use buffer with |
1299 | * 255 entries | |
1300 | */ | |
1da177e4 LT |
1301 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1302 | ||
1303 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1304 | * copy it to the user space. | |
1305 | */ | |
01df8c31 | 1306 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1307 | if (!buf) { |
1da177e4 LT |
1308 | err = -ENOMEM; |
1309 | goto done; | |
1310 | } | |
1311 | ||
09fd0de5 | 1312 | hci_dev_lock(hdev); |
1da177e4 | 1313 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1314 | hci_dev_unlock(hdev); |
1da177e4 LT |
1315 | |
1316 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1317 | ||
1318 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1319 | ptr += sizeof(ir); | |
1320 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1321 | ir.num_rsp)) |
1da177e4 | 1322 | err = -EFAULT; |
8e87d142 | 1323 | } else |
1da177e4 LT |
1324 | err = -EFAULT; |
1325 | ||
1326 | kfree(buf); | |
1327 | ||
1328 | done: | |
1329 | hci_dev_put(hdev); | |
1330 | return err; | |
1331 | } | |
1332 | ||
cbed0ca1 | 1333 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1334 | { |
1da177e4 LT |
1335 | int ret = 0; |
1336 | ||
1da177e4 LT |
1337 | BT_DBG("%s %p", hdev->name, hdev); |
1338 | ||
1339 | hci_req_lock(hdev); | |
1340 | ||
d7a5a11d | 1341 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1342 | ret = -ENODEV; |
1343 | goto done; | |
1344 | } | |
1345 | ||
d7a5a11d MH |
1346 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1347 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1348 | /* Check for rfkill but allow the HCI setup stage to |
1349 | * proceed (which in itself doesn't cause any RF activity). | |
1350 | */ | |
d7a5a11d | 1351 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1352 | ret = -ERFKILL; |
1353 | goto done; | |
1354 | } | |
1355 | ||
1356 | /* Check for valid public address or a configured static | |
1357 | * random adddress, but let the HCI setup proceed to | |
1358 | * be able to determine if there is a public address | |
1359 | * or not. | |
1360 | * | |
c6beca0e MH |
1361 | * In case of user channel usage, it is not important |
1362 | * if a public address or static random address is | |
1363 | * available. | |
1364 | * | |
a5c8f270 MH |
1365 | * This check is only valid for BR/EDR controllers |
1366 | * since AMP controllers do not have an address. | |
1367 | */ | |
d7a5a11d | 1368 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1369 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1370 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1371 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1372 | ret = -EADDRNOTAVAIL; | |
1373 | goto done; | |
1374 | } | |
611b30f7 MH |
1375 | } |
1376 | ||
1da177e4 LT |
1377 | if (test_bit(HCI_UP, &hdev->flags)) { |
1378 | ret = -EALREADY; | |
1379 | goto done; | |
1380 | } | |
1381 | ||
1da177e4 LT |
1382 | if (hdev->open(hdev)) { |
1383 | ret = -EIO; | |
1384 | goto done; | |
1385 | } | |
1386 | ||
f41c70c4 MH |
1387 | atomic_set(&hdev->cmd_cnt, 1); |
1388 | set_bit(HCI_INIT, &hdev->flags); | |
1389 | ||
d7a5a11d | 1390 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
af202f84 MH |
1391 | if (hdev->setup) |
1392 | ret = hdev->setup(hdev); | |
f41c70c4 | 1393 | |
af202f84 MH |
1394 | /* The transport driver can set these quirks before |
1395 | * creating the HCI device or in its setup callback. | |
1396 | * | |
1397 | * In case any of them is set, the controller has to | |
1398 | * start up as unconfigured. | |
1399 | */ | |
eb1904f4 MH |
1400 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1401 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1402 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1403 | |
0ebca7d6 MH |
1404 | /* For an unconfigured controller it is required to |
1405 | * read at least the version information provided by | |
1406 | * the Read Local Version Information command. | |
1407 | * | |
1408 | * If the set_bdaddr driver callback is provided, then | |
1409 | * also the original Bluetooth public device address | |
1410 | * will be read using the Read BD Address command. | |
1411 | */ | |
d7a5a11d | 1412 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1413 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1414 | } |
1415 | ||
d7a5a11d | 1416 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1417 | /* If public address change is configured, ensure that |
1418 | * the address gets programmed. If the driver does not | |
1419 | * support changing the public address, fail the power | |
1420 | * on procedure. | |
1421 | */ | |
1422 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1423 | hdev->set_bdaddr) | |
24c457e2 MH |
1424 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1425 | else | |
1426 | ret = -EADDRNOTAVAIL; | |
1427 | } | |
1428 | ||
f41c70c4 | 1429 | if (!ret) { |
d7a5a11d MH |
1430 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1431 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
f41c70c4 | 1432 | ret = __hci_init(hdev); |
1da177e4 LT |
1433 | } |
1434 | ||
f41c70c4 MH |
1435 | clear_bit(HCI_INIT, &hdev->flags); |
1436 | ||
1da177e4 LT |
1437 | if (!ret) { |
1438 | hci_dev_hold(hdev); | |
a1536da2 | 1439 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 LT |
1440 | set_bit(HCI_UP, &hdev->flags); |
1441 | hci_notify(hdev, HCI_DEV_UP); | |
d7a5a11d MH |
1442 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1443 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1444 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1445 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1514b892 | 1446 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1447 | hci_dev_lock(hdev); |
744cf19e | 1448 | mgmt_powered(hdev, 1); |
09fd0de5 | 1449 | hci_dev_unlock(hdev); |
56e5cb86 | 1450 | } |
8e87d142 | 1451 | } else { |
1da177e4 | 1452 | /* Init failed, cleanup */ |
3eff45ea | 1453 | flush_work(&hdev->tx_work); |
c347b765 | 1454 | flush_work(&hdev->cmd_work); |
b78752cc | 1455 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1456 | |
1457 | skb_queue_purge(&hdev->cmd_q); | |
1458 | skb_queue_purge(&hdev->rx_q); | |
1459 | ||
1460 | if (hdev->flush) | |
1461 | hdev->flush(hdev); | |
1462 | ||
1463 | if (hdev->sent_cmd) { | |
1464 | kfree_skb(hdev->sent_cmd); | |
1465 | hdev->sent_cmd = NULL; | |
1466 | } | |
1467 | ||
1468 | hdev->close(hdev); | |
fee746b0 | 1469 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1470 | } |
1471 | ||
1472 | done: | |
1473 | hci_req_unlock(hdev); | |
1da177e4 LT |
1474 | return ret; |
1475 | } | |
1476 | ||
cbed0ca1 JH |
1477 | /* ---- HCI ioctl helpers ---- */ |
1478 | ||
1479 | int hci_dev_open(__u16 dev) | |
1480 | { | |
1481 | struct hci_dev *hdev; | |
1482 | int err; | |
1483 | ||
1484 | hdev = hci_dev_get(dev); | |
1485 | if (!hdev) | |
1486 | return -ENODEV; | |
1487 | ||
4a964404 | 1488 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1489 | * up as user channel. Trying to bring them up as normal devices |
1490 | * will result into a failure. Only user channel operation is | |
1491 | * possible. | |
1492 | * | |
1493 | * When this function is called for a user channel, the flag | |
1494 | * HCI_USER_CHANNEL will be set first before attempting to | |
1495 | * open the device. | |
1496 | */ | |
d7a5a11d MH |
1497 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1498 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1499 | err = -EOPNOTSUPP; |
1500 | goto done; | |
1501 | } | |
1502 | ||
e1d08f40 JH |
1503 | /* We need to ensure that no other power on/off work is pending |
1504 | * before proceeding to call hci_dev_do_open. This is | |
1505 | * particularly important if the setup procedure has not yet | |
1506 | * completed. | |
1507 | */ | |
a69d8927 | 1508 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1509 | cancel_delayed_work(&hdev->power_off); |
1510 | ||
a5c8f270 MH |
1511 | /* After this call it is guaranteed that the setup procedure |
1512 | * has finished. This means that error conditions like RFKILL | |
1513 | * or no valid public or static random address apply. | |
1514 | */ | |
e1d08f40 JH |
1515 | flush_workqueue(hdev->req_workqueue); |
1516 | ||
12aa4f0a | 1517 | /* For controllers not using the management interface and that |
b6ae8457 | 1518 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1519 | * so that pairing works for them. Once the management interface |
1520 | * is in use this bit will be cleared again and userspace has | |
1521 | * to explicitly enable it. | |
1522 | */ | |
d7a5a11d MH |
1523 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1524 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1525 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1526 | |
cbed0ca1 JH |
1527 | err = hci_dev_do_open(hdev); |
1528 | ||
fee746b0 | 1529 | done: |
cbed0ca1 | 1530 | hci_dev_put(hdev); |
cbed0ca1 JH |
1531 | return err; |
1532 | } | |
1533 | ||
d7347f3c JH |
1534 | /* This function requires the caller holds hdev->lock */ |
1535 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1536 | { | |
1537 | struct hci_conn_params *p; | |
1538 | ||
f161dd41 JH |
1539 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1540 | if (p->conn) { | |
1541 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1542 | hci_conn_put(p->conn); |
f161dd41 JH |
1543 | p->conn = NULL; |
1544 | } | |
d7347f3c | 1545 | list_del_init(&p->action); |
f161dd41 | 1546 | } |
d7347f3c JH |
1547 | |
1548 | BT_DBG("All LE pending actions cleared"); | |
1549 | } | |
1550 | ||
1da177e4 LT |
1551 | static int hci_dev_do_close(struct hci_dev *hdev) |
1552 | { | |
1553 | BT_DBG("%s %p", hdev->name, hdev); | |
1554 | ||
d24d8144 | 1555 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1556 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1557 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1558 | /* Execute vendor specific shutdown routine */ |
1559 | if (hdev->shutdown) | |
1560 | hdev->shutdown(hdev); | |
1561 | } | |
1562 | ||
78c04c0b VCG |
1563 | cancel_delayed_work(&hdev->power_off); |
1564 | ||
1da177e4 LT |
1565 | hci_req_cancel(hdev, ENODEV); |
1566 | hci_req_lock(hdev); | |
1567 | ||
1568 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1569 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1570 | hci_req_unlock(hdev); |
1571 | return 0; | |
1572 | } | |
1573 | ||
3eff45ea GP |
1574 | /* Flush RX and TX works */ |
1575 | flush_work(&hdev->tx_work); | |
b78752cc | 1576 | flush_work(&hdev->rx_work); |
1da177e4 | 1577 | |
16ab91ab | 1578 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1579 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1580 | hdev->discov_timeout = 0; |
a358dc11 MH |
1581 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1582 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1583 | } |
1584 | ||
a69d8927 | 1585 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1586 | cancel_delayed_work(&hdev->service_cache); |
1587 | ||
7ba8b4be | 1588 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2d28cfe7 | 1589 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
4518bb0f | 1590 | |
d7a5a11d | 1591 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1592 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1593 | |
5d900e46 FG |
1594 | if (hdev->adv_instance_timeout) { |
1595 | cancel_delayed_work_sync(&hdev->adv_instance_expire); | |
1596 | hdev->adv_instance_timeout = 0; | |
1597 | } | |
1598 | ||
76727c02 JH |
1599 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1600 | * ensuring the workqueue is empty up front. | |
1601 | */ | |
1602 | drain_workqueue(hdev->workqueue); | |
1603 | ||
09fd0de5 | 1604 | hci_dev_lock(hdev); |
1aeb9c65 | 1605 | |
8f502f84 JH |
1606 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1607 | ||
a69d8927 | 1608 | if (!hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { |
1aeb9c65 JH |
1609 | if (hdev->dev_type == HCI_BREDR) |
1610 | mgmt_powered(hdev, 0); | |
1611 | } | |
1612 | ||
1f9b9a5d | 1613 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1614 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1615 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1616 | hci_dev_unlock(hdev); |
1da177e4 | 1617 | |
64dae967 MH |
1618 | smp_unregister(hdev); |
1619 | ||
1da177e4 LT |
1620 | hci_notify(hdev, HCI_DEV_DOWN); |
1621 | ||
1622 | if (hdev->flush) | |
1623 | hdev->flush(hdev); | |
1624 | ||
1625 | /* Reset device */ | |
1626 | skb_queue_purge(&hdev->cmd_q); | |
1627 | atomic_set(&hdev->cmd_cnt, 1); | |
d7a5a11d MH |
1628 | if (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && |
1629 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
a6c511c6 | 1630 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1631 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1632 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1633 | clear_bit(HCI_INIT, &hdev->flags); |
1634 | } | |
1635 | ||
c347b765 GP |
1636 | /* flush cmd work */ |
1637 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1638 | |
1639 | /* Drop queues */ | |
1640 | skb_queue_purge(&hdev->rx_q); | |
1641 | skb_queue_purge(&hdev->cmd_q); | |
1642 | skb_queue_purge(&hdev->raw_q); | |
1643 | ||
1644 | /* Drop last sent command */ | |
1645 | if (hdev->sent_cmd) { | |
65cc2b49 | 1646 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1647 | kfree_skb(hdev->sent_cmd); |
1648 | hdev->sent_cmd = NULL; | |
1649 | } | |
1650 | ||
1651 | /* After this point our queues are empty | |
1652 | * and no tasks are scheduled. */ | |
1653 | hdev->close(hdev); | |
1654 | ||
35b973c9 | 1655 | /* Clear flags */ |
fee746b0 | 1656 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1657 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1658 | |
ced5c338 | 1659 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1660 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1661 | |
e59fda8d | 1662 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1663 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1664 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1665 | |
1da177e4 LT |
1666 | hci_req_unlock(hdev); |
1667 | ||
1668 | hci_dev_put(hdev); | |
1669 | return 0; | |
1670 | } | |
1671 | ||
1672 | int hci_dev_close(__u16 dev) | |
1673 | { | |
1674 | struct hci_dev *hdev; | |
1675 | int err; | |
1676 | ||
70f23020 AE |
1677 | hdev = hci_dev_get(dev); |
1678 | if (!hdev) | |
1da177e4 | 1679 | return -ENODEV; |
8ee56540 | 1680 | |
d7a5a11d | 1681 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1682 | err = -EBUSY; |
1683 | goto done; | |
1684 | } | |
1685 | ||
a69d8927 | 1686 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1687 | cancel_delayed_work(&hdev->power_off); |
1688 | ||
1da177e4 | 1689 | err = hci_dev_do_close(hdev); |
8ee56540 | 1690 | |
0736cfa8 | 1691 | done: |
1da177e4 LT |
1692 | hci_dev_put(hdev); |
1693 | return err; | |
1694 | } | |
1695 | ||
5c912495 | 1696 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1697 | { |
5c912495 | 1698 | int ret; |
1da177e4 | 1699 | |
5c912495 | 1700 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1701 | |
1702 | hci_req_lock(hdev); | |
1da177e4 | 1703 | |
1da177e4 LT |
1704 | /* Drop queues */ |
1705 | skb_queue_purge(&hdev->rx_q); | |
1706 | skb_queue_purge(&hdev->cmd_q); | |
1707 | ||
76727c02 JH |
1708 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1709 | * ensuring the workqueue is empty up front. | |
1710 | */ | |
1711 | drain_workqueue(hdev->workqueue); | |
1712 | ||
09fd0de5 | 1713 | hci_dev_lock(hdev); |
1f9b9a5d | 1714 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1715 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1716 | hci_dev_unlock(hdev); |
1da177e4 LT |
1717 | |
1718 | if (hdev->flush) | |
1719 | hdev->flush(hdev); | |
1720 | ||
8e87d142 | 1721 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1722 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1723 | |
fee746b0 | 1724 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1725 | |
1da177e4 | 1726 | hci_req_unlock(hdev); |
1da177e4 LT |
1727 | return ret; |
1728 | } | |
1729 | ||
5c912495 MH |
1730 | int hci_dev_reset(__u16 dev) |
1731 | { | |
1732 | struct hci_dev *hdev; | |
1733 | int err; | |
1734 | ||
1735 | hdev = hci_dev_get(dev); | |
1736 | if (!hdev) | |
1737 | return -ENODEV; | |
1738 | ||
1739 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1740 | err = -ENETDOWN; | |
1741 | goto done; | |
1742 | } | |
1743 | ||
d7a5a11d | 1744 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1745 | err = -EBUSY; |
1746 | goto done; | |
1747 | } | |
1748 | ||
d7a5a11d | 1749 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1750 | err = -EOPNOTSUPP; |
1751 | goto done; | |
1752 | } | |
1753 | ||
1754 | err = hci_dev_do_reset(hdev); | |
1755 | ||
1756 | done: | |
1757 | hci_dev_put(hdev); | |
1758 | return err; | |
1759 | } | |
1760 | ||
1da177e4 LT |
1761 | int hci_dev_reset_stat(__u16 dev) |
1762 | { | |
1763 | struct hci_dev *hdev; | |
1764 | int ret = 0; | |
1765 | ||
70f23020 AE |
1766 | hdev = hci_dev_get(dev); |
1767 | if (!hdev) | |
1da177e4 LT |
1768 | return -ENODEV; |
1769 | ||
d7a5a11d | 1770 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1771 | ret = -EBUSY; |
1772 | goto done; | |
1773 | } | |
1774 | ||
d7a5a11d | 1775 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1776 | ret = -EOPNOTSUPP; |
1777 | goto done; | |
1778 | } | |
1779 | ||
1da177e4 LT |
1780 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1781 | ||
0736cfa8 | 1782 | done: |
1da177e4 | 1783 | hci_dev_put(hdev); |
1da177e4 LT |
1784 | return ret; |
1785 | } | |
1786 | ||
123abc08 JH |
1787 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1788 | { | |
bc6d2d04 | 1789 | bool conn_changed, discov_changed; |
123abc08 JH |
1790 | |
1791 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1792 | ||
1793 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1794 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1795 | HCI_CONNECTABLE); | |
123abc08 | 1796 | else |
a69d8927 MH |
1797 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1798 | HCI_CONNECTABLE); | |
123abc08 | 1799 | |
bc6d2d04 | 1800 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1801 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1802 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1803 | } else { |
a358dc11 | 1804 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1805 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1806 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1807 | } |
1808 | ||
d7a5a11d | 1809 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1810 | return; |
1811 | ||
bc6d2d04 JH |
1812 | if (conn_changed || discov_changed) { |
1813 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1814 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1815 | |
d7a5a11d | 1816 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
bc6d2d04 JH |
1817 | mgmt_update_adv_data(hdev); |
1818 | ||
123abc08 | 1819 | mgmt_new_settings(hdev); |
bc6d2d04 | 1820 | } |
123abc08 JH |
1821 | } |
1822 | ||
1da177e4 LT |
1823 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1824 | { | |
1825 | struct hci_dev *hdev; | |
1826 | struct hci_dev_req dr; | |
1827 | int err = 0; | |
1828 | ||
1829 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1830 | return -EFAULT; | |
1831 | ||
70f23020 AE |
1832 | hdev = hci_dev_get(dr.dev_id); |
1833 | if (!hdev) | |
1da177e4 LT |
1834 | return -ENODEV; |
1835 | ||
d7a5a11d | 1836 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1837 | err = -EBUSY; |
1838 | goto done; | |
1839 | } | |
1840 | ||
d7a5a11d | 1841 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1842 | err = -EOPNOTSUPP; |
1843 | goto done; | |
1844 | } | |
1845 | ||
5b69bef5 MH |
1846 | if (hdev->dev_type != HCI_BREDR) { |
1847 | err = -EOPNOTSUPP; | |
1848 | goto done; | |
1849 | } | |
1850 | ||
d7a5a11d | 1851 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1852 | err = -EOPNOTSUPP; |
1853 | goto done; | |
1854 | } | |
1855 | ||
1da177e4 LT |
1856 | switch (cmd) { |
1857 | case HCISETAUTH: | |
01178cd4 JH |
1858 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1859 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1860 | break; |
1861 | ||
1862 | case HCISETENCRYPT: | |
1863 | if (!lmp_encrypt_capable(hdev)) { | |
1864 | err = -EOPNOTSUPP; | |
1865 | break; | |
1866 | } | |
1867 | ||
1868 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1869 | /* Auth must be enabled first */ | |
01178cd4 JH |
1870 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1871 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1872 | if (err) |
1873 | break; | |
1874 | } | |
1875 | ||
01178cd4 JH |
1876 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1877 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1878 | break; |
1879 | ||
1880 | case HCISETSCAN: | |
01178cd4 JH |
1881 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1882 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1883 | |
bc6d2d04 JH |
1884 | /* Ensure that the connectable and discoverable states |
1885 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1886 | */ |
123abc08 JH |
1887 | if (!err) |
1888 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1889 | break; |
1890 | ||
1da177e4 | 1891 | case HCISETLINKPOL: |
01178cd4 JH |
1892 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1893 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1894 | break; |
1895 | ||
1896 | case HCISETLINKMODE: | |
e4e8e37c MH |
1897 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1898 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1899 | break; | |
1900 | ||
1901 | case HCISETPTYPE: | |
1902 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1903 | break; |
1904 | ||
1905 | case HCISETACLMTU: | |
e4e8e37c MH |
1906 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1907 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1908 | break; |
1909 | ||
1910 | case HCISETSCOMTU: | |
e4e8e37c MH |
1911 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1912 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1913 | break; |
1914 | ||
1915 | default: | |
1916 | err = -EINVAL; | |
1917 | break; | |
1918 | } | |
e4e8e37c | 1919 | |
0736cfa8 | 1920 | done: |
1da177e4 LT |
1921 | hci_dev_put(hdev); |
1922 | return err; | |
1923 | } | |
1924 | ||
1925 | int hci_get_dev_list(void __user *arg) | |
1926 | { | |
8035ded4 | 1927 | struct hci_dev *hdev; |
1da177e4 LT |
1928 | struct hci_dev_list_req *dl; |
1929 | struct hci_dev_req *dr; | |
1da177e4 LT |
1930 | int n = 0, size, err; |
1931 | __u16 dev_num; | |
1932 | ||
1933 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1934 | return -EFAULT; | |
1935 | ||
1936 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1937 | return -EINVAL; | |
1938 | ||
1939 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1940 | ||
70f23020 AE |
1941 | dl = kzalloc(size, GFP_KERNEL); |
1942 | if (!dl) | |
1da177e4 LT |
1943 | return -ENOMEM; |
1944 | ||
1945 | dr = dl->dev_req; | |
1946 | ||
f20d09d5 | 1947 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1948 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1949 | unsigned long flags = hdev->flags; |
c542a06c | 1950 | |
2e84d8db MH |
1951 | /* When the auto-off is configured it means the transport |
1952 | * is running, but in that case still indicate that the | |
1953 | * device is actually down. | |
1954 | */ | |
d7a5a11d | 1955 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1956 | flags &= ~BIT(HCI_UP); |
c542a06c | 1957 | |
1da177e4 | 1958 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1959 | (dr + n)->dev_opt = flags; |
c542a06c | 1960 | |
1da177e4 LT |
1961 | if (++n >= dev_num) |
1962 | break; | |
1963 | } | |
f20d09d5 | 1964 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1965 | |
1966 | dl->dev_num = n; | |
1967 | size = sizeof(*dl) + n * sizeof(*dr); | |
1968 | ||
1969 | err = copy_to_user(arg, dl, size); | |
1970 | kfree(dl); | |
1971 | ||
1972 | return err ? -EFAULT : 0; | |
1973 | } | |
1974 | ||
1975 | int hci_get_dev_info(void __user *arg) | |
1976 | { | |
1977 | struct hci_dev *hdev; | |
1978 | struct hci_dev_info di; | |
2e84d8db | 1979 | unsigned long flags; |
1da177e4 LT |
1980 | int err = 0; |
1981 | ||
1982 | if (copy_from_user(&di, arg, sizeof(di))) | |
1983 | return -EFAULT; | |
1984 | ||
70f23020 AE |
1985 | hdev = hci_dev_get(di.dev_id); |
1986 | if (!hdev) | |
1da177e4 LT |
1987 | return -ENODEV; |
1988 | ||
2e84d8db MH |
1989 | /* When the auto-off is configured it means the transport |
1990 | * is running, but in that case still indicate that the | |
1991 | * device is actually down. | |
1992 | */ | |
d7a5a11d | 1993 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1994 | flags = hdev->flags & ~BIT(HCI_UP); |
1995 | else | |
1996 | flags = hdev->flags; | |
c542a06c | 1997 | |
1da177e4 LT |
1998 | strcpy(di.name, hdev->name); |
1999 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2000 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2001 | di.flags = flags; |
1da177e4 | 2002 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2003 | if (lmp_bredr_capable(hdev)) { |
2004 | di.acl_mtu = hdev->acl_mtu; | |
2005 | di.acl_pkts = hdev->acl_pkts; | |
2006 | di.sco_mtu = hdev->sco_mtu; | |
2007 | di.sco_pkts = hdev->sco_pkts; | |
2008 | } else { | |
2009 | di.acl_mtu = hdev->le_mtu; | |
2010 | di.acl_pkts = hdev->le_pkts; | |
2011 | di.sco_mtu = 0; | |
2012 | di.sco_pkts = 0; | |
2013 | } | |
1da177e4 LT |
2014 | di.link_policy = hdev->link_policy; |
2015 | di.link_mode = hdev->link_mode; | |
2016 | ||
2017 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2018 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2019 | ||
2020 | if (copy_to_user(arg, &di, sizeof(di))) | |
2021 | err = -EFAULT; | |
2022 | ||
2023 | hci_dev_put(hdev); | |
2024 | ||
2025 | return err; | |
2026 | } | |
2027 | ||
2028 | /* ---- Interface to HCI drivers ---- */ | |
2029 | ||
611b30f7 MH |
2030 | static int hci_rfkill_set_block(void *data, bool blocked) |
2031 | { | |
2032 | struct hci_dev *hdev = data; | |
2033 | ||
2034 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2035 | ||
d7a5a11d | 2036 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2037 | return -EBUSY; |
2038 | ||
5e130367 | 2039 | if (blocked) { |
a1536da2 | 2040 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2041 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2042 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2043 | hci_dev_do_close(hdev); |
5e130367 | 2044 | } else { |
a358dc11 | 2045 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2046 | } |
611b30f7 MH |
2047 | |
2048 | return 0; | |
2049 | } | |
2050 | ||
2051 | static const struct rfkill_ops hci_rfkill_ops = { | |
2052 | .set_block = hci_rfkill_set_block, | |
2053 | }; | |
2054 | ||
ab81cbf9 JH |
2055 | static void hci_power_on(struct work_struct *work) |
2056 | { | |
2057 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2058 | int err; |
ab81cbf9 JH |
2059 | |
2060 | BT_DBG("%s", hdev->name); | |
2061 | ||
cbed0ca1 | 2062 | err = hci_dev_do_open(hdev); |
96570ffc | 2063 | if (err < 0) { |
3ad67582 | 2064 | hci_dev_lock(hdev); |
96570ffc | 2065 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2066 | hci_dev_unlock(hdev); |
ab81cbf9 | 2067 | return; |
96570ffc | 2068 | } |
ab81cbf9 | 2069 | |
a5c8f270 MH |
2070 | /* During the HCI setup phase, a few error conditions are |
2071 | * ignored and they need to be checked now. If they are still | |
2072 | * valid, it is important to turn the device back off. | |
2073 | */ | |
d7a5a11d MH |
2074 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2075 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2076 | (hdev->dev_type == HCI_BREDR && |
2077 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2078 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2079 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2080 | hci_dev_do_close(hdev); |
d7a5a11d | 2081 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2082 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2083 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2084 | } |
ab81cbf9 | 2085 | |
a69d8927 | 2086 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2087 | /* For unconfigured devices, set the HCI_RAW flag |
2088 | * so that userspace can easily identify them. | |
4a964404 | 2089 | */ |
d7a5a11d | 2090 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2091 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2092 | |
2093 | /* For fully configured devices, this will send | |
2094 | * the Index Added event. For unconfigured devices, | |
2095 | * it will send Unconfigued Index Added event. | |
2096 | * | |
2097 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2098 | * and no event will be send. | |
2099 | */ | |
2100 | mgmt_index_added(hdev); | |
a69d8927 | 2101 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2102 | /* When the controller is now configured, then it |
2103 | * is important to clear the HCI_RAW flag. | |
2104 | */ | |
d7a5a11d | 2105 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2106 | clear_bit(HCI_RAW, &hdev->flags); |
2107 | ||
d603b76b MH |
2108 | /* Powering on the controller with HCI_CONFIG set only |
2109 | * happens with the transition from unconfigured to | |
2110 | * configured. This will send the Index Added event. | |
2111 | */ | |
744cf19e | 2112 | mgmt_index_added(hdev); |
fee746b0 | 2113 | } |
ab81cbf9 JH |
2114 | } |
2115 | ||
2116 | static void hci_power_off(struct work_struct *work) | |
2117 | { | |
3243553f | 2118 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2119 | power_off.work); |
ab81cbf9 JH |
2120 | |
2121 | BT_DBG("%s", hdev->name); | |
2122 | ||
8ee56540 | 2123 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2124 | } |
2125 | ||
c7741d16 MH |
2126 | static void hci_error_reset(struct work_struct *work) |
2127 | { | |
2128 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2129 | ||
2130 | BT_DBG("%s", hdev->name); | |
2131 | ||
2132 | if (hdev->hw_error) | |
2133 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2134 | else | |
2135 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2136 | hdev->hw_error_code); | |
2137 | ||
2138 | if (hci_dev_do_close(hdev)) | |
2139 | return; | |
2140 | ||
c7741d16 MH |
2141 | hci_dev_do_open(hdev); |
2142 | } | |
2143 | ||
16ab91ab JH |
2144 | static void hci_discov_off(struct work_struct *work) |
2145 | { | |
2146 | struct hci_dev *hdev; | |
16ab91ab JH |
2147 | |
2148 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2149 | ||
2150 | BT_DBG("%s", hdev->name); | |
2151 | ||
d1967ff8 | 2152 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2153 | } |
2154 | ||
5d900e46 FG |
2155 | static void hci_adv_timeout_expire(struct work_struct *work) |
2156 | { | |
2157 | struct hci_dev *hdev; | |
2158 | ||
2159 | hdev = container_of(work, struct hci_dev, adv_instance_expire.work); | |
2160 | ||
2161 | BT_DBG("%s", hdev->name); | |
2162 | ||
2163 | mgmt_adv_timeout_expired(hdev); | |
2164 | } | |
2165 | ||
35f7498a | 2166 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2167 | { |
4821002c | 2168 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2169 | |
4821002c JH |
2170 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2171 | list_del(&uuid->list); | |
2aeb9a1a JH |
2172 | kfree(uuid); |
2173 | } | |
2aeb9a1a JH |
2174 | } |
2175 | ||
35f7498a | 2176 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2177 | { |
0378b597 | 2178 | struct link_key *key; |
55ed8ca1 | 2179 | |
0378b597 JH |
2180 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2181 | list_del_rcu(&key->list); | |
2182 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2183 | } |
55ed8ca1 JH |
2184 | } |
2185 | ||
35f7498a | 2186 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2187 | { |
970d0f1b | 2188 | struct smp_ltk *k; |
b899efaf | 2189 | |
970d0f1b JH |
2190 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2191 | list_del_rcu(&k->list); | |
2192 | kfree_rcu(k, rcu); | |
b899efaf | 2193 | } |
b899efaf VCG |
2194 | } |
2195 | ||
970c4e46 JH |
2196 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2197 | { | |
adae20cb | 2198 | struct smp_irk *k; |
970c4e46 | 2199 | |
adae20cb JH |
2200 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2201 | list_del_rcu(&k->list); | |
2202 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2203 | } |
2204 | } | |
2205 | ||
55ed8ca1 JH |
2206 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2207 | { | |
8035ded4 | 2208 | struct link_key *k; |
55ed8ca1 | 2209 | |
0378b597 JH |
2210 | rcu_read_lock(); |
2211 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2212 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2213 | rcu_read_unlock(); | |
55ed8ca1 | 2214 | return k; |
0378b597 JH |
2215 | } |
2216 | } | |
2217 | rcu_read_unlock(); | |
55ed8ca1 JH |
2218 | |
2219 | return NULL; | |
2220 | } | |
2221 | ||
745c0ce3 | 2222 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2223 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2224 | { |
2225 | /* Legacy key */ | |
2226 | if (key_type < 0x03) | |
745c0ce3 | 2227 | return true; |
d25e28ab JH |
2228 | |
2229 | /* Debug keys are insecure so don't store them persistently */ | |
2230 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2231 | return false; |
d25e28ab JH |
2232 | |
2233 | /* Changed combination key and there's no previous one */ | |
2234 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2235 | return false; |
d25e28ab JH |
2236 | |
2237 | /* Security mode 3 case */ | |
2238 | if (!conn) | |
745c0ce3 | 2239 | return true; |
d25e28ab | 2240 | |
e3befab9 JH |
2241 | /* BR/EDR key derived using SC from an LE link */ |
2242 | if (conn->type == LE_LINK) | |
2243 | return true; | |
2244 | ||
d25e28ab JH |
2245 | /* Neither local nor remote side had no-bonding as requirement */ |
2246 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2247 | return true; |
d25e28ab JH |
2248 | |
2249 | /* Local side had dedicated bonding as requirement */ | |
2250 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2251 | return true; |
d25e28ab JH |
2252 | |
2253 | /* Remote side had dedicated bonding as requirement */ | |
2254 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2255 | return true; |
d25e28ab JH |
2256 | |
2257 | /* If none of the above criteria match, then don't store the key | |
2258 | * persistently */ | |
745c0ce3 | 2259 | return false; |
d25e28ab JH |
2260 | } |
2261 | ||
e804d25d | 2262 | static u8 ltk_role(u8 type) |
98a0b845 | 2263 | { |
e804d25d JH |
2264 | if (type == SMP_LTK) |
2265 | return HCI_ROLE_MASTER; | |
98a0b845 | 2266 | |
e804d25d | 2267 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2268 | } |
2269 | ||
f3a73d97 JH |
2270 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2271 | u8 addr_type, u8 role) | |
75d262c2 | 2272 | { |
c9839a11 | 2273 | struct smp_ltk *k; |
75d262c2 | 2274 | |
970d0f1b JH |
2275 | rcu_read_lock(); |
2276 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2277 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2278 | continue; | |
2279 | ||
923e2414 | 2280 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2281 | rcu_read_unlock(); |
75d262c2 | 2282 | return k; |
970d0f1b JH |
2283 | } |
2284 | } | |
2285 | rcu_read_unlock(); | |
75d262c2 VCG |
2286 | |
2287 | return NULL; | |
2288 | } | |
75d262c2 | 2289 | |
970c4e46 JH |
2290 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2291 | { | |
2292 | struct smp_irk *irk; | |
2293 | ||
adae20cb JH |
2294 | rcu_read_lock(); |
2295 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2296 | if (!bacmp(&irk->rpa, rpa)) { | |
2297 | rcu_read_unlock(); | |
970c4e46 | 2298 | return irk; |
adae20cb | 2299 | } |
970c4e46 JH |
2300 | } |
2301 | ||
adae20cb | 2302 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2303 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2304 | bacpy(&irk->rpa, rpa); |
adae20cb | 2305 | rcu_read_unlock(); |
970c4e46 JH |
2306 | return irk; |
2307 | } | |
2308 | } | |
adae20cb | 2309 | rcu_read_unlock(); |
970c4e46 JH |
2310 | |
2311 | return NULL; | |
2312 | } | |
2313 | ||
2314 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2315 | u8 addr_type) | |
2316 | { | |
2317 | struct smp_irk *irk; | |
2318 | ||
6cfc9988 JH |
2319 | /* Identity Address must be public or static random */ |
2320 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2321 | return NULL; | |
2322 | ||
adae20cb JH |
2323 | rcu_read_lock(); |
2324 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2325 | if (addr_type == irk->addr_type && |
adae20cb JH |
2326 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2327 | rcu_read_unlock(); | |
970c4e46 | 2328 | return irk; |
adae20cb | 2329 | } |
970c4e46 | 2330 | } |
adae20cb | 2331 | rcu_read_unlock(); |
970c4e46 JH |
2332 | |
2333 | return NULL; | |
2334 | } | |
2335 | ||
567fa2aa | 2336 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2337 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2338 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2339 | { |
2340 | struct link_key *key, *old_key; | |
745c0ce3 | 2341 | u8 old_key_type; |
55ed8ca1 JH |
2342 | |
2343 | old_key = hci_find_link_key(hdev, bdaddr); | |
2344 | if (old_key) { | |
2345 | old_key_type = old_key->type; | |
2346 | key = old_key; | |
2347 | } else { | |
12adcf3a | 2348 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2349 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2350 | if (!key) |
567fa2aa | 2351 | return NULL; |
0378b597 | 2352 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2353 | } |
2354 | ||
6ed93dc6 | 2355 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2356 | |
d25e28ab JH |
2357 | /* Some buggy controller combinations generate a changed |
2358 | * combination key for legacy pairing even when there's no | |
2359 | * previous key */ | |
2360 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2361 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2362 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2363 | if (conn) |
2364 | conn->key_type = type; | |
2365 | } | |
d25e28ab | 2366 | |
55ed8ca1 | 2367 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2368 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2369 | key->pin_len = pin_len; |
2370 | ||
b6020ba0 | 2371 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2372 | key->type = old_key_type; |
4748fed2 JH |
2373 | else |
2374 | key->type = type; | |
2375 | ||
7652ff6a JH |
2376 | if (persistent) |
2377 | *persistent = hci_persistent_key(hdev, conn, type, | |
2378 | old_key_type); | |
4df378a1 | 2379 | |
567fa2aa | 2380 | return key; |
55ed8ca1 JH |
2381 | } |
2382 | ||
ca9142b8 | 2383 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2384 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2385 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2386 | { |
c9839a11 | 2387 | struct smp_ltk *key, *old_key; |
e804d25d | 2388 | u8 role = ltk_role(type); |
75d262c2 | 2389 | |
f3a73d97 | 2390 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2391 | if (old_key) |
75d262c2 | 2392 | key = old_key; |
c9839a11 | 2393 | else { |
0a14ab41 | 2394 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2395 | if (!key) |
ca9142b8 | 2396 | return NULL; |
970d0f1b | 2397 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2398 | } |
2399 | ||
75d262c2 | 2400 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2401 | key->bdaddr_type = addr_type; |
2402 | memcpy(key->val, tk, sizeof(key->val)); | |
2403 | key->authenticated = authenticated; | |
2404 | key->ediv = ediv; | |
fe39c7b2 | 2405 | key->rand = rand; |
c9839a11 VCG |
2406 | key->enc_size = enc_size; |
2407 | key->type = type; | |
75d262c2 | 2408 | |
ca9142b8 | 2409 | return key; |
75d262c2 VCG |
2410 | } |
2411 | ||
ca9142b8 JH |
2412 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2413 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2414 | { |
2415 | struct smp_irk *irk; | |
2416 | ||
2417 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2418 | if (!irk) { | |
2419 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2420 | if (!irk) | |
ca9142b8 | 2421 | return NULL; |
970c4e46 JH |
2422 | |
2423 | bacpy(&irk->bdaddr, bdaddr); | |
2424 | irk->addr_type = addr_type; | |
2425 | ||
adae20cb | 2426 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2427 | } |
2428 | ||
2429 | memcpy(irk->val, val, 16); | |
2430 | bacpy(&irk->rpa, rpa); | |
2431 | ||
ca9142b8 | 2432 | return irk; |
970c4e46 JH |
2433 | } |
2434 | ||
55ed8ca1 JH |
2435 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2436 | { | |
2437 | struct link_key *key; | |
2438 | ||
2439 | key = hci_find_link_key(hdev, bdaddr); | |
2440 | if (!key) | |
2441 | return -ENOENT; | |
2442 | ||
6ed93dc6 | 2443 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2444 | |
0378b597 JH |
2445 | list_del_rcu(&key->list); |
2446 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2447 | |
2448 | return 0; | |
2449 | } | |
2450 | ||
e0b2b27e | 2451 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2452 | { |
970d0f1b | 2453 | struct smp_ltk *k; |
c51ffa0b | 2454 | int removed = 0; |
b899efaf | 2455 | |
970d0f1b | 2456 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2457 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2458 | continue; |
2459 | ||
6ed93dc6 | 2460 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2461 | |
970d0f1b JH |
2462 | list_del_rcu(&k->list); |
2463 | kfree_rcu(k, rcu); | |
c51ffa0b | 2464 | removed++; |
b899efaf VCG |
2465 | } |
2466 | ||
c51ffa0b | 2467 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2468 | } |
2469 | ||
a7ec7338 JH |
2470 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2471 | { | |
adae20cb | 2472 | struct smp_irk *k; |
a7ec7338 | 2473 | |
adae20cb | 2474 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2475 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2476 | continue; | |
2477 | ||
2478 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2479 | ||
adae20cb JH |
2480 | list_del_rcu(&k->list); |
2481 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2482 | } |
2483 | } | |
2484 | ||
55e76b38 JH |
2485 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2486 | { | |
2487 | struct smp_ltk *k; | |
4ba9faf3 | 2488 | struct smp_irk *irk; |
55e76b38 JH |
2489 | u8 addr_type; |
2490 | ||
2491 | if (type == BDADDR_BREDR) { | |
2492 | if (hci_find_link_key(hdev, bdaddr)) | |
2493 | return true; | |
2494 | return false; | |
2495 | } | |
2496 | ||
2497 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2498 | if (type == BDADDR_LE_PUBLIC) | |
2499 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2500 | else | |
2501 | addr_type = ADDR_LE_DEV_RANDOM; | |
2502 | ||
4ba9faf3 JH |
2503 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2504 | if (irk) { | |
2505 | bdaddr = &irk->bdaddr; | |
2506 | addr_type = irk->addr_type; | |
2507 | } | |
2508 | ||
55e76b38 JH |
2509 | rcu_read_lock(); |
2510 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2511 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2512 | rcu_read_unlock(); | |
55e76b38 | 2513 | return true; |
87c8b28d | 2514 | } |
55e76b38 JH |
2515 | } |
2516 | rcu_read_unlock(); | |
2517 | ||
2518 | return false; | |
2519 | } | |
2520 | ||
6bd32326 | 2521 | /* HCI command timer function */ |
65cc2b49 | 2522 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2523 | { |
65cc2b49 MH |
2524 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2525 | cmd_timer.work); | |
6bd32326 | 2526 | |
bda4f23a AE |
2527 | if (hdev->sent_cmd) { |
2528 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2529 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2530 | ||
2531 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2532 | } else { | |
2533 | BT_ERR("%s command tx timeout", hdev->name); | |
2534 | } | |
2535 | ||
6bd32326 | 2536 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2537 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2538 | } |
2539 | ||
2763eda6 | 2540 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2541 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2542 | { |
2543 | struct oob_data *data; | |
2544 | ||
6928a924 JH |
2545 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2546 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2547 | continue; | |
2548 | if (data->bdaddr_type != bdaddr_type) | |
2549 | continue; | |
2550 | return data; | |
2551 | } | |
2763eda6 SJ |
2552 | |
2553 | return NULL; | |
2554 | } | |
2555 | ||
6928a924 JH |
2556 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2557 | u8 bdaddr_type) | |
2763eda6 SJ |
2558 | { |
2559 | struct oob_data *data; | |
2560 | ||
6928a924 | 2561 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2562 | if (!data) |
2563 | return -ENOENT; | |
2564 | ||
6928a924 | 2565 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2566 | |
2567 | list_del(&data->list); | |
2568 | kfree(data); | |
2569 | ||
2570 | return 0; | |
2571 | } | |
2572 | ||
35f7498a | 2573 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2574 | { |
2575 | struct oob_data *data, *n; | |
2576 | ||
2577 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2578 | list_del(&data->list); | |
2579 | kfree(data); | |
2580 | } | |
2763eda6 SJ |
2581 | } |
2582 | ||
0798872e | 2583 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2584 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2585 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2586 | { |
2587 | struct oob_data *data; | |
2588 | ||
6928a924 | 2589 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2590 | if (!data) { |
0a14ab41 | 2591 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2592 | if (!data) |
2593 | return -ENOMEM; | |
2594 | ||
2595 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2596 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2597 | list_add(&data->list, &hdev->remote_oob_data); |
2598 | } | |
2599 | ||
81328d5c JH |
2600 | if (hash192 && rand192) { |
2601 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2602 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2603 | if (hash256 && rand256) |
2604 | data->present = 0x03; | |
81328d5c JH |
2605 | } else { |
2606 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2607 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2608 | if (hash256 && rand256) |
2609 | data->present = 0x02; | |
2610 | else | |
2611 | data->present = 0x00; | |
0798872e MH |
2612 | } |
2613 | ||
81328d5c JH |
2614 | if (hash256 && rand256) { |
2615 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2616 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2617 | } else { | |
2618 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2619 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2620 | if (hash192 && rand192) |
2621 | data->present = 0x01; | |
81328d5c | 2622 | } |
0798872e | 2623 | |
6ed93dc6 | 2624 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2625 | |
2626 | return 0; | |
2627 | } | |
2628 | ||
d2609b34 FG |
2629 | /* This function requires the caller holds hdev->lock */ |
2630 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2631 | { | |
2632 | struct adv_info *adv_instance; | |
2633 | ||
2634 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2635 | if (adv_instance->instance == instance) | |
2636 | return adv_instance; | |
2637 | } | |
2638 | ||
2639 | return NULL; | |
2640 | } | |
2641 | ||
2642 | /* This function requires the caller holds hdev->lock */ | |
2643 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) { | |
2644 | struct adv_info *cur_instance; | |
2645 | ||
2646 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2647 | if (!cur_instance) | |
2648 | return NULL; | |
2649 | ||
2650 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2651 | struct adv_info, list)) | |
2652 | return list_first_entry(&hdev->adv_instances, | |
2653 | struct adv_info, list); | |
2654 | else | |
2655 | return list_next_entry(cur_instance, list); | |
2656 | } | |
2657 | ||
2658 | /* This function requires the caller holds hdev->lock */ | |
2659 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2660 | { | |
2661 | struct adv_info *adv_instance; | |
2662 | ||
2663 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2664 | if (!adv_instance) | |
2665 | return -ENOENT; | |
2666 | ||
2667 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2668 | ||
5d900e46 FG |
2669 | if (hdev->cur_adv_instance == instance && hdev->adv_instance_timeout) { |
2670 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2671 | hdev->adv_instance_timeout = 0; | |
2672 | } | |
2673 | ||
d2609b34 FG |
2674 | list_del(&adv_instance->list); |
2675 | kfree(adv_instance); | |
2676 | ||
2677 | hdev->adv_instance_cnt--; | |
2678 | ||
2679 | return 0; | |
2680 | } | |
2681 | ||
2682 | /* This function requires the caller holds hdev->lock */ | |
2683 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2684 | { | |
2685 | struct adv_info *adv_instance, *n; | |
2686 | ||
5d900e46 FG |
2687 | if (hdev->adv_instance_timeout) { |
2688 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2689 | hdev->adv_instance_timeout = 0; | |
2690 | } | |
2691 | ||
d2609b34 FG |
2692 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2693 | list_del(&adv_instance->list); | |
2694 | kfree(adv_instance); | |
2695 | } | |
2696 | ||
2697 | hdev->adv_instance_cnt = 0; | |
2698 | } | |
2699 | ||
2700 | /* This function requires the caller holds hdev->lock */ | |
2701 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2702 | u16 adv_data_len, u8 *adv_data, | |
2703 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2704 | u16 timeout, u16 duration) | |
2705 | { | |
2706 | struct adv_info *adv_instance; | |
2707 | ||
2708 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2709 | if (adv_instance) { | |
2710 | memset(adv_instance->adv_data, 0, | |
2711 | sizeof(adv_instance->adv_data)); | |
2712 | memset(adv_instance->scan_rsp_data, 0, | |
2713 | sizeof(adv_instance->scan_rsp_data)); | |
2714 | } else { | |
2715 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2716 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2717 | return -EOVERFLOW; | |
2718 | ||
2719 | adv_instance = kmalloc(sizeof(*adv_instance), GFP_KERNEL); | |
2720 | if (!adv_instance) | |
2721 | return -ENOMEM; | |
2722 | ||
2723 | memset(adv_instance, 0, sizeof(*adv_instance)); | |
fffd38bc | 2724 | adv_instance->pending = true; |
d2609b34 FG |
2725 | adv_instance->instance = instance; |
2726 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2727 | hdev->adv_instance_cnt++; | |
2728 | } | |
2729 | ||
2730 | adv_instance->flags = flags; | |
2731 | adv_instance->adv_data_len = adv_data_len; | |
2732 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2733 | ||
2734 | if (adv_data_len) | |
2735 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2736 | ||
2737 | if (scan_rsp_len) | |
2738 | memcpy(adv_instance->scan_rsp_data, | |
2739 | scan_rsp_data, scan_rsp_len); | |
2740 | ||
2741 | adv_instance->timeout = timeout; | |
5d900e46 | 2742 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2743 | |
2744 | if (duration == 0) | |
2745 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2746 | else | |
2747 | adv_instance->duration = duration; | |
2748 | ||
2749 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2750 | ||
2751 | return 0; | |
2752 | } | |
2753 | ||
dcc36c16 | 2754 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2755 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2756 | { |
8035ded4 | 2757 | struct bdaddr_list *b; |
b2a66aad | 2758 | |
dcc36c16 | 2759 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2760 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2761 | return b; |
b9ee0a78 | 2762 | } |
b2a66aad AJ |
2763 | |
2764 | return NULL; | |
2765 | } | |
2766 | ||
dcc36c16 | 2767 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2768 | { |
2769 | struct list_head *p, *n; | |
2770 | ||
dcc36c16 | 2771 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2772 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2773 | |
2774 | list_del(p); | |
2775 | kfree(b); | |
2776 | } | |
b2a66aad AJ |
2777 | } |
2778 | ||
dcc36c16 | 2779 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2780 | { |
2781 | struct bdaddr_list *entry; | |
b2a66aad | 2782 | |
b9ee0a78 | 2783 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2784 | return -EBADF; |
2785 | ||
dcc36c16 | 2786 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2787 | return -EEXIST; |
b2a66aad | 2788 | |
27f70f3e | 2789 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2790 | if (!entry) |
2791 | return -ENOMEM; | |
b2a66aad AJ |
2792 | |
2793 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2794 | entry->bdaddr_type = type; |
b2a66aad | 2795 | |
dcc36c16 | 2796 | list_add(&entry->list, list); |
b2a66aad | 2797 | |
2a8357f2 | 2798 | return 0; |
b2a66aad AJ |
2799 | } |
2800 | ||
dcc36c16 | 2801 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2802 | { |
2803 | struct bdaddr_list *entry; | |
b2a66aad | 2804 | |
35f7498a | 2805 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2806 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2807 | return 0; |
2808 | } | |
b2a66aad | 2809 | |
dcc36c16 | 2810 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2811 | if (!entry) |
2812 | return -ENOENT; | |
2813 | ||
2814 | list_del(&entry->list); | |
2815 | kfree(entry); | |
2816 | ||
2817 | return 0; | |
2818 | } | |
2819 | ||
15819a70 AG |
2820 | /* This function requires the caller holds hdev->lock */ |
2821 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2822 | bdaddr_t *addr, u8 addr_type) | |
2823 | { | |
2824 | struct hci_conn_params *params; | |
2825 | ||
738f6185 JH |
2826 | /* The conn params list only contains identity addresses */ |
2827 | if (!hci_is_identity_address(addr, addr_type)) | |
2828 | return NULL; | |
2829 | ||
15819a70 AG |
2830 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
2831 | if (bacmp(¶ms->addr, addr) == 0 && | |
2832 | params->addr_type == addr_type) { | |
2833 | return params; | |
2834 | } | |
2835 | } | |
2836 | ||
2837 | return NULL; | |
2838 | } | |
2839 | ||
4b10966f | 2840 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2841 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2842 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2843 | { |
912b42ef | 2844 | struct hci_conn_params *param; |
a9b0a04c | 2845 | |
738f6185 JH |
2846 | /* The list only contains identity addresses */ |
2847 | if (!hci_is_identity_address(addr, addr_type)) | |
2848 | return NULL; | |
a9b0a04c | 2849 | |
501f8827 | 2850 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2851 | if (bacmp(¶m->addr, addr) == 0 && |
2852 | param->addr_type == addr_type) | |
2853 | return param; | |
4b10966f MH |
2854 | } |
2855 | ||
2856 | return NULL; | |
a9b0a04c AG |
2857 | } |
2858 | ||
15819a70 | 2859 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2860 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2861 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2862 | { |
2863 | struct hci_conn_params *params; | |
2864 | ||
c46245b3 | 2865 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 2866 | return NULL; |
a9b0a04c | 2867 | |
15819a70 | 2868 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce | 2869 | if (params) |
51d167c0 | 2870 | return params; |
15819a70 AG |
2871 | |
2872 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2873 | if (!params) { | |
2874 | BT_ERR("Out of memory"); | |
51d167c0 | 2875 | return NULL; |
15819a70 AG |
2876 | } |
2877 | ||
2878 | bacpy(¶ms->addr, addr); | |
2879 | params->addr_type = addr_type; | |
cef952ce AG |
2880 | |
2881 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2882 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2883 | |
bf5b3c8b MH |
2884 | params->conn_min_interval = hdev->le_conn_min_interval; |
2885 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2886 | params->conn_latency = hdev->le_conn_latency; | |
2887 | params->supervision_timeout = hdev->le_supv_timeout; | |
2888 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2889 | ||
2890 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2891 | ||
51d167c0 | 2892 | return params; |
bf5b3c8b MH |
2893 | } |
2894 | ||
f6c63249 | 2895 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2896 | { |
f8aaf9b6 | 2897 | if (params->conn) { |
f161dd41 | 2898 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2899 | hci_conn_put(params->conn); |
2900 | } | |
f161dd41 | 2901 | |
95305baa | 2902 | list_del(¶ms->action); |
15819a70 AG |
2903 | list_del(¶ms->list); |
2904 | kfree(params); | |
f6c63249 JH |
2905 | } |
2906 | ||
2907 | /* This function requires the caller holds hdev->lock */ | |
2908 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2909 | { | |
2910 | struct hci_conn_params *params; | |
2911 | ||
2912 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2913 | if (!params) | |
2914 | return; | |
2915 | ||
2916 | hci_conn_params_free(params); | |
15819a70 | 2917 | |
95305baa JH |
2918 | hci_update_background_scan(hdev); |
2919 | ||
15819a70 AG |
2920 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2921 | } | |
2922 | ||
2923 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2924 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2925 | { |
2926 | struct hci_conn_params *params, *tmp; | |
2927 | ||
2928 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2929 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2930 | continue; | |
15819a70 AG |
2931 | list_del(¶ms->list); |
2932 | kfree(params); | |
2933 | } | |
2934 | ||
55af49a8 | 2935 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2936 | } |
2937 | ||
2938 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 2939 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2940 | { |
15819a70 | 2941 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2942 | |
f6c63249 JH |
2943 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2944 | hci_conn_params_free(params); | |
77a77a30 | 2945 | |
a4790dbd | 2946 | hci_update_background_scan(hdev); |
77a77a30 | 2947 | |
15819a70 | 2948 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2949 | } |
2950 | ||
1904a853 | 2951 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 2952 | { |
4c87eaab AG |
2953 | if (status) { |
2954 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2955 | |
4c87eaab AG |
2956 | hci_dev_lock(hdev); |
2957 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2958 | hci_dev_unlock(hdev); | |
2959 | return; | |
2960 | } | |
7ba8b4be AG |
2961 | } |
2962 | ||
1904a853 MH |
2963 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
2964 | u16 opcode) | |
7ba8b4be | 2965 | { |
4c87eaab AG |
2966 | /* General inquiry access code (GIAC) */ |
2967 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
4c87eaab | 2968 | struct hci_cp_inquiry cp; |
7ba8b4be AG |
2969 | int err; |
2970 | ||
4c87eaab AG |
2971 | if (status) { |
2972 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2973 | return; | |
2974 | } | |
7ba8b4be | 2975 | |
2d28cfe7 JP |
2976 | hdev->discovery.scan_start = 0; |
2977 | ||
4c87eaab AG |
2978 | switch (hdev->discovery.type) { |
2979 | case DISCOV_TYPE_LE: | |
2980 | hci_dev_lock(hdev); | |
2981 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2982 | hci_dev_unlock(hdev); | |
2983 | break; | |
7ba8b4be | 2984 | |
4c87eaab | 2985 | case DISCOV_TYPE_INTERLEAVED: |
4c87eaab | 2986 | hci_dev_lock(hdev); |
7dbfac1d | 2987 | |
07d2334a JP |
2988 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, |
2989 | &hdev->quirks)) { | |
2990 | /* If we were running LE only scan, change discovery | |
2991 | * state. If we were running both LE and BR/EDR inquiry | |
2992 | * simultaneously, and BR/EDR inquiry is already | |
2993 | * finished, stop discovery, otherwise BR/EDR inquiry | |
177d0506 WK |
2994 | * will stop discovery when finished. If we will resolve |
2995 | * remote device name, do not change discovery state. | |
07d2334a | 2996 | */ |
177d0506 WK |
2997 | if (!test_bit(HCI_INQUIRY, &hdev->flags) && |
2998 | hdev->discovery.state != DISCOVERY_RESOLVING) | |
07d2334a JP |
2999 | hci_discovery_set_state(hdev, |
3000 | DISCOVERY_STOPPED); | |
3001 | } else { | |
baf880a9 JH |
3002 | struct hci_request req; |
3003 | ||
07d2334a JP |
3004 | hci_inquiry_cache_flush(hdev); |
3005 | ||
baf880a9 JH |
3006 | hci_req_init(&req, hdev); |
3007 | ||
3008 | memset(&cp, 0, sizeof(cp)); | |
3009 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3010 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3011 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
3012 | ||
07d2334a JP |
3013 | err = hci_req_run(&req, inquiry_complete); |
3014 | if (err) { | |
3015 | BT_ERR("Inquiry request failed: err %d", err); | |
3016 | hci_discovery_set_state(hdev, | |
3017 | DISCOVERY_STOPPED); | |
3018 | } | |
4c87eaab | 3019 | } |
7dbfac1d | 3020 | |
4c87eaab AG |
3021 | hci_dev_unlock(hdev); |
3022 | break; | |
7dbfac1d | 3023 | } |
7dbfac1d AG |
3024 | } |
3025 | ||
7ba8b4be AG |
3026 | static void le_scan_disable_work(struct work_struct *work) |
3027 | { | |
3028 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3029 | le_scan_disable.work); |
4c87eaab AG |
3030 | struct hci_request req; |
3031 | int err; | |
7ba8b4be AG |
3032 | |
3033 | BT_DBG("%s", hdev->name); | |
3034 | ||
2d28cfe7 JP |
3035 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
3036 | ||
4c87eaab | 3037 | hci_req_init(&req, hdev); |
28b75a89 | 3038 | |
b1efcc28 | 3039 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3040 | |
4c87eaab AG |
3041 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3042 | if (err) | |
3043 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3044 | } |
3045 | ||
2d28cfe7 JP |
3046 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
3047 | u16 opcode) | |
3048 | { | |
3049 | unsigned long timeout, duration, scan_start, now; | |
3050 | ||
3051 | BT_DBG("%s", hdev->name); | |
3052 | ||
3053 | if (status) { | |
3054 | BT_ERR("Failed to restart LE scan: status %d", status); | |
3055 | return; | |
3056 | } | |
3057 | ||
3058 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
3059 | !hdev->discovery.scan_start) | |
3060 | return; | |
3061 | ||
3062 | /* When the scan was started, hdev->le_scan_disable has been queued | |
3063 | * after duration from scan_start. During scan restart this job | |
3064 | * has been canceled, and we need to queue it again after proper | |
3065 | * timeout, to make sure that scan does not run indefinitely. | |
3066 | */ | |
3067 | duration = hdev->discovery.scan_duration; | |
3068 | scan_start = hdev->discovery.scan_start; | |
3069 | now = jiffies; | |
3070 | if (now - scan_start <= duration) { | |
3071 | int elapsed; | |
3072 | ||
3073 | if (now >= scan_start) | |
3074 | elapsed = now - scan_start; | |
3075 | else | |
3076 | elapsed = ULONG_MAX - scan_start + now; | |
3077 | ||
3078 | timeout = duration - elapsed; | |
3079 | } else { | |
3080 | timeout = 0; | |
3081 | } | |
3082 | queue_delayed_work(hdev->workqueue, | |
3083 | &hdev->le_scan_disable, timeout); | |
3084 | } | |
3085 | ||
3086 | static void le_scan_restart_work(struct work_struct *work) | |
3087 | { | |
3088 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
3089 | le_scan_restart.work); | |
3090 | struct hci_request req; | |
3091 | struct hci_cp_le_set_scan_enable cp; | |
3092 | int err; | |
3093 | ||
3094 | BT_DBG("%s", hdev->name); | |
3095 | ||
3096 | /* If controller is not scanning we are done. */ | |
d7a5a11d | 3097 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2d28cfe7 JP |
3098 | return; |
3099 | ||
3100 | hci_req_init(&req, hdev); | |
3101 | ||
3102 | hci_req_add_le_scan_disable(&req); | |
3103 | ||
3104 | memset(&cp, 0, sizeof(cp)); | |
3105 | cp.enable = LE_SCAN_ENABLE; | |
3106 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
3107 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
3108 | ||
3109 | err = hci_req_run(&req, le_scan_restart_work_complete); | |
3110 | if (err) | |
3111 | BT_ERR("Restart LE scan request failed: err %d", err); | |
3112 | } | |
3113 | ||
a1f4c318 JH |
3114 | /* Copy the Identity Address of the controller. |
3115 | * | |
3116 | * If the controller has a public BD_ADDR, then by default use that one. | |
3117 | * If this is a LE only controller without a public address, default to | |
3118 | * the static random address. | |
3119 | * | |
3120 | * For debugging purposes it is possible to force controllers with a | |
3121 | * public address to use the static random address instead. | |
50b5b952 MH |
3122 | * |
3123 | * In case BR/EDR has been disabled on a dual-mode controller and | |
3124 | * userspace has configured a static address, then that address | |
3125 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
3126 | */ |
3127 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3128 | u8 *bdaddr_type) | |
3129 | { | |
b7cb93e5 | 3130 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 3131 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 3132 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 3133 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
3134 | bacpy(bdaddr, &hdev->static_addr); |
3135 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3136 | } else { | |
3137 | bacpy(bdaddr, &hdev->bdaddr); | |
3138 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3139 | } | |
3140 | } | |
3141 | ||
9be0dab7 DH |
3142 | /* Alloc HCI device */ |
3143 | struct hci_dev *hci_alloc_dev(void) | |
3144 | { | |
3145 | struct hci_dev *hdev; | |
3146 | ||
27f70f3e | 3147 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3148 | if (!hdev) |
3149 | return NULL; | |
3150 | ||
b1b813d4 DH |
3151 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3152 | hdev->esco_type = (ESCO_HV1); | |
3153 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3154 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3155 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3156 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3157 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3158 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
3159 | hdev->adv_instance_cnt = 0; |
3160 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 3161 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 3162 | |
b1b813d4 DH |
3163 | hdev->sniff_max_interval = 800; |
3164 | hdev->sniff_min_interval = 80; | |
3165 | ||
3f959d46 | 3166 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3167 | hdev->le_adv_min_interval = 0x0800; |
3168 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3169 | hdev->le_scan_interval = 0x0060; |
3170 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3171 | hdev->le_conn_min_interval = 0x0028; |
3172 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3173 | hdev->le_conn_latency = 0x0000; |
3174 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3175 | hdev->le_def_tx_len = 0x001b; |
3176 | hdev->le_def_tx_time = 0x0148; | |
3177 | hdev->le_max_tx_len = 0x001b; | |
3178 | hdev->le_max_tx_time = 0x0148; | |
3179 | hdev->le_max_rx_len = 0x001b; | |
3180 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3181 | |
d6bfd59c | 3182 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3183 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3184 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3185 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3186 | |
b1b813d4 DH |
3187 | mutex_init(&hdev->lock); |
3188 | mutex_init(&hdev->req_lock); | |
3189 | ||
3190 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3191 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3192 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3193 | INIT_LIST_HEAD(&hdev->uuids); |
3194 | INIT_LIST_HEAD(&hdev->link_keys); | |
3195 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3196 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3197 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3198 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3199 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3200 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3201 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3202 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 3203 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
3204 | |
3205 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3206 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3207 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3208 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3209 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3210 | |
b1b813d4 DH |
3211 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3212 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3213 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2d28cfe7 | 3214 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
5d900e46 | 3215 | INIT_DELAYED_WORK(&hdev->adv_instance_expire, hci_adv_timeout_expire); |
b1b813d4 | 3216 | |
b1b813d4 DH |
3217 | skb_queue_head_init(&hdev->rx_q); |
3218 | skb_queue_head_init(&hdev->cmd_q); | |
3219 | skb_queue_head_init(&hdev->raw_q); | |
3220 | ||
3221 | init_waitqueue_head(&hdev->req_wait_q); | |
3222 | ||
65cc2b49 | 3223 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3224 | |
b1b813d4 DH |
3225 | hci_init_sysfs(hdev); |
3226 | discovery_init(hdev); | |
9be0dab7 DH |
3227 | |
3228 | return hdev; | |
3229 | } | |
3230 | EXPORT_SYMBOL(hci_alloc_dev); | |
3231 | ||
3232 | /* Free HCI device */ | |
3233 | void hci_free_dev(struct hci_dev *hdev) | |
3234 | { | |
9be0dab7 DH |
3235 | /* will free via device release */ |
3236 | put_device(&hdev->dev); | |
3237 | } | |
3238 | EXPORT_SYMBOL(hci_free_dev); | |
3239 | ||
1da177e4 LT |
3240 | /* Register HCI device */ |
3241 | int hci_register_dev(struct hci_dev *hdev) | |
3242 | { | |
b1b813d4 | 3243 | int id, error; |
1da177e4 | 3244 | |
74292d5a | 3245 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3246 | return -EINVAL; |
3247 | ||
08add513 MM |
3248 | /* Do not allow HCI_AMP devices to register at index 0, |
3249 | * so the index can be used as the AMP controller ID. | |
3250 | */ | |
3df92b31 SL |
3251 | switch (hdev->dev_type) { |
3252 | case HCI_BREDR: | |
3253 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3254 | break; | |
3255 | case HCI_AMP: | |
3256 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3257 | break; | |
3258 | default: | |
3259 | return -EINVAL; | |
1da177e4 | 3260 | } |
8e87d142 | 3261 | |
3df92b31 SL |
3262 | if (id < 0) |
3263 | return id; | |
3264 | ||
1da177e4 LT |
3265 | sprintf(hdev->name, "hci%d", id); |
3266 | hdev->id = id; | |
2d8b3a11 AE |
3267 | |
3268 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3269 | ||
d8537548 KC |
3270 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3271 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3272 | if (!hdev->workqueue) { |
3273 | error = -ENOMEM; | |
3274 | goto err; | |
3275 | } | |
f48fd9c8 | 3276 | |
d8537548 KC |
3277 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3278 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3279 | if (!hdev->req_workqueue) { |
3280 | destroy_workqueue(hdev->workqueue); | |
3281 | error = -ENOMEM; | |
3282 | goto err; | |
3283 | } | |
3284 | ||
0153e2ec MH |
3285 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3286 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3287 | ||
bdc3e0f1 MH |
3288 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3289 | ||
3290 | error = device_add(&hdev->dev); | |
33ca954d | 3291 | if (error < 0) |
54506918 | 3292 | goto err_wqueue; |
1da177e4 | 3293 | |
611b30f7 | 3294 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3295 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3296 | hdev); | |
611b30f7 MH |
3297 | if (hdev->rfkill) { |
3298 | if (rfkill_register(hdev->rfkill) < 0) { | |
3299 | rfkill_destroy(hdev->rfkill); | |
3300 | hdev->rfkill = NULL; | |
3301 | } | |
3302 | } | |
3303 | ||
5e130367 | 3304 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3305 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3306 | |
a1536da2 MH |
3307 | hci_dev_set_flag(hdev, HCI_SETUP); |
3308 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3309 | |
01cd3404 | 3310 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3311 | /* Assume BR/EDR support until proven otherwise (such as |
3312 | * through reading supported features during init. | |
3313 | */ | |
a1536da2 | 3314 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3315 | } |
ce2be9ac | 3316 | |
fcee3377 GP |
3317 | write_lock(&hci_dev_list_lock); |
3318 | list_add(&hdev->list, &hci_dev_list); | |
3319 | write_unlock(&hci_dev_list_lock); | |
3320 | ||
4a964404 MH |
3321 | /* Devices that are marked for raw-only usage are unconfigured |
3322 | * and should not be included in normal operation. | |
fee746b0 MH |
3323 | */ |
3324 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3325 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3326 | |
1da177e4 | 3327 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3328 | hci_dev_hold(hdev); |
1da177e4 | 3329 | |
19202573 | 3330 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3331 | |
1da177e4 | 3332 | return id; |
f48fd9c8 | 3333 | |
33ca954d DH |
3334 | err_wqueue: |
3335 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3336 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3337 | err: |
3df92b31 | 3338 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3339 | |
33ca954d | 3340 | return error; |
1da177e4 LT |
3341 | } |
3342 | EXPORT_SYMBOL(hci_register_dev); | |
3343 | ||
3344 | /* Unregister HCI device */ | |
59735631 | 3345 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3346 | { |
2d7cc19e | 3347 | int id; |
ef222013 | 3348 | |
c13854ce | 3349 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3350 | |
a1536da2 | 3351 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3352 | |
3df92b31 SL |
3353 | id = hdev->id; |
3354 | ||
f20d09d5 | 3355 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3356 | list_del(&hdev->list); |
f20d09d5 | 3357 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3358 | |
3359 | hci_dev_do_close(hdev); | |
3360 | ||
b9b5ef18 GP |
3361 | cancel_work_sync(&hdev->power_on); |
3362 | ||
ab81cbf9 | 3363 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3364 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3365 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3366 | hci_dev_lock(hdev); |
744cf19e | 3367 | mgmt_index_removed(hdev); |
09fd0de5 | 3368 | hci_dev_unlock(hdev); |
56e5cb86 | 3369 | } |
ab81cbf9 | 3370 | |
2e58ef3e JH |
3371 | /* mgmt_index_removed should take care of emptying the |
3372 | * pending list */ | |
3373 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3374 | ||
1da177e4 LT |
3375 | hci_notify(hdev, HCI_DEV_UNREG); |
3376 | ||
611b30f7 MH |
3377 | if (hdev->rfkill) { |
3378 | rfkill_unregister(hdev->rfkill); | |
3379 | rfkill_destroy(hdev->rfkill); | |
3380 | } | |
3381 | ||
bdc3e0f1 | 3382 | device_del(&hdev->dev); |
147e2d59 | 3383 | |
0153e2ec MH |
3384 | debugfs_remove_recursive(hdev->debugfs); |
3385 | ||
f48fd9c8 | 3386 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3387 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3388 | |
09fd0de5 | 3389 | hci_dev_lock(hdev); |
dcc36c16 | 3390 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3391 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3392 | hci_uuids_clear(hdev); |
55ed8ca1 | 3393 | hci_link_keys_clear(hdev); |
b899efaf | 3394 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3395 | hci_smp_irks_clear(hdev); |
2763eda6 | 3396 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3397 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3398 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3399 | hci_conn_params_clear_all(hdev); |
22078800 | 3400 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3401 | hci_dev_unlock(hdev); |
e2e0cacb | 3402 | |
dc946bd8 | 3403 | hci_dev_put(hdev); |
3df92b31 SL |
3404 | |
3405 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3406 | } |
3407 | EXPORT_SYMBOL(hci_unregister_dev); | |
3408 | ||
3409 | /* Suspend HCI device */ | |
3410 | int hci_suspend_dev(struct hci_dev *hdev) | |
3411 | { | |
3412 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3413 | return 0; | |
3414 | } | |
3415 | EXPORT_SYMBOL(hci_suspend_dev); | |
3416 | ||
3417 | /* Resume HCI device */ | |
3418 | int hci_resume_dev(struct hci_dev *hdev) | |
3419 | { | |
3420 | hci_notify(hdev, HCI_DEV_RESUME); | |
3421 | return 0; | |
3422 | } | |
3423 | EXPORT_SYMBOL(hci_resume_dev); | |
3424 | ||
75e0569f MH |
3425 | /* Reset HCI device */ |
3426 | int hci_reset_dev(struct hci_dev *hdev) | |
3427 | { | |
3428 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3429 | struct sk_buff *skb; | |
3430 | ||
3431 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3432 | if (!skb) | |
3433 | return -ENOMEM; | |
3434 | ||
3435 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3436 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3437 | ||
3438 | /* Send Hardware Error to upper stack */ | |
3439 | return hci_recv_frame(hdev, skb); | |
3440 | } | |
3441 | EXPORT_SYMBOL(hci_reset_dev); | |
3442 | ||
76bca880 | 3443 | /* Receive frame from HCI drivers */ |
e1a26170 | 3444 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3445 | { |
76bca880 | 3446 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3447 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3448 | kfree_skb(skb); |
3449 | return -ENXIO; | |
3450 | } | |
3451 | ||
d82603c6 | 3452 | /* Incoming skb */ |
76bca880 MH |
3453 | bt_cb(skb)->incoming = 1; |
3454 | ||
3455 | /* Time stamp */ | |
3456 | __net_timestamp(skb); | |
3457 | ||
76bca880 | 3458 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3459 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3460 | |
76bca880 MH |
3461 | return 0; |
3462 | } | |
3463 | EXPORT_SYMBOL(hci_recv_frame); | |
3464 | ||
1da177e4 LT |
3465 | /* ---- Interface to upper protocols ---- */ |
3466 | ||
1da177e4 LT |
3467 | int hci_register_cb(struct hci_cb *cb) |
3468 | { | |
3469 | BT_DBG("%p name %s", cb, cb->name); | |
3470 | ||
fba7ecf0 | 3471 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3472 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3473 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3474 | |
3475 | return 0; | |
3476 | } | |
3477 | EXPORT_SYMBOL(hci_register_cb); | |
3478 | ||
3479 | int hci_unregister_cb(struct hci_cb *cb) | |
3480 | { | |
3481 | BT_DBG("%p name %s", cb, cb->name); | |
3482 | ||
fba7ecf0 | 3483 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3484 | list_del(&cb->list); |
fba7ecf0 | 3485 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3486 | |
3487 | return 0; | |
3488 | } | |
3489 | EXPORT_SYMBOL(hci_unregister_cb); | |
3490 | ||
51086991 | 3491 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3492 | { |
cdc52faa MH |
3493 | int err; |
3494 | ||
0d48d939 | 3495 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3496 | |
cd82e61c MH |
3497 | /* Time stamp */ |
3498 | __net_timestamp(skb); | |
1da177e4 | 3499 | |
cd82e61c MH |
3500 | /* Send copy to monitor */ |
3501 | hci_send_to_monitor(hdev, skb); | |
3502 | ||
3503 | if (atomic_read(&hdev->promisc)) { | |
3504 | /* Send copy to the sockets */ | |
470fe1b5 | 3505 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3506 | } |
3507 | ||
3508 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3509 | skb_orphan(skb); | |
3510 | ||
cdc52faa MH |
3511 | err = hdev->send(hdev, skb); |
3512 | if (err < 0) { | |
3513 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3514 | kfree_skb(skb); | |
3515 | } | |
1da177e4 LT |
3516 | } |
3517 | ||
1ca3a9d0 | 3518 | /* Send HCI command */ |
07dc93dd JH |
3519 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3520 | const void *param) | |
1ca3a9d0 JH |
3521 | { |
3522 | struct sk_buff *skb; | |
3523 | ||
3524 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3525 | ||
3526 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3527 | if (!skb) { | |
3528 | BT_ERR("%s no memory for command", hdev->name); | |
3529 | return -ENOMEM; | |
3530 | } | |
3531 | ||
49c922bb | 3532 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3533 | * single-command requests. |
3534 | */ | |
db6e3e8d | 3535 | bt_cb(skb)->req.start = true; |
11714b3d | 3536 | |
1da177e4 | 3537 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3538 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3539 | |
3540 | return 0; | |
3541 | } | |
1da177e4 LT |
3542 | |
3543 | /* Get data from the previously sent command */ | |
a9de9248 | 3544 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3545 | { |
3546 | struct hci_command_hdr *hdr; | |
3547 | ||
3548 | if (!hdev->sent_cmd) | |
3549 | return NULL; | |
3550 | ||
3551 | hdr = (void *) hdev->sent_cmd->data; | |
3552 | ||
a9de9248 | 3553 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3554 | return NULL; |
3555 | ||
f0e09510 | 3556 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3557 | |
3558 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3559 | } | |
3560 | ||
3561 | /* Send ACL data */ | |
3562 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3563 | { | |
3564 | struct hci_acl_hdr *hdr; | |
3565 | int len = skb->len; | |
3566 | ||
badff6d0 ACM |
3567 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3568 | skb_reset_transport_header(skb); | |
9c70220b | 3569 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3570 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3571 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3572 | } |
3573 | ||
ee22be7e | 3574 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3575 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3576 | { |
ee22be7e | 3577 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3578 | struct hci_dev *hdev = conn->hdev; |
3579 | struct sk_buff *list; | |
3580 | ||
087bfd99 GP |
3581 | skb->len = skb_headlen(skb); |
3582 | skb->data_len = 0; | |
3583 | ||
3584 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3585 | |
3586 | switch (hdev->dev_type) { | |
3587 | case HCI_BREDR: | |
3588 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3589 | break; | |
3590 | case HCI_AMP: | |
3591 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3592 | break; | |
3593 | default: | |
3594 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3595 | return; | |
3596 | } | |
087bfd99 | 3597 | |
70f23020 AE |
3598 | list = skb_shinfo(skb)->frag_list; |
3599 | if (!list) { | |
1da177e4 LT |
3600 | /* Non fragmented */ |
3601 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3602 | ||
73d80deb | 3603 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3604 | } else { |
3605 | /* Fragmented */ | |
3606 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3607 | ||
3608 | skb_shinfo(skb)->frag_list = NULL; | |
3609 | ||
9cfd5a23 JR |
3610 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3611 | * here because of 6LoWPAN links, as there this function is | |
3612 | * called from softirq and using normal spin lock could cause | |
3613 | * deadlocks. | |
3614 | */ | |
3615 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3616 | |
73d80deb | 3617 | __skb_queue_tail(queue, skb); |
e702112f AE |
3618 | |
3619 | flags &= ~ACL_START; | |
3620 | flags |= ACL_CONT; | |
1da177e4 LT |
3621 | do { |
3622 | skb = list; list = list->next; | |
8e87d142 | 3623 | |
0d48d939 | 3624 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3625 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3626 | |
3627 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3628 | ||
73d80deb | 3629 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3630 | } while (list); |
3631 | ||
9cfd5a23 | 3632 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3633 | } |
73d80deb LAD |
3634 | } |
3635 | ||
3636 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3637 | { | |
ee22be7e | 3638 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3639 | |
f0e09510 | 3640 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3641 | |
ee22be7e | 3642 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3643 | |
3eff45ea | 3644 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3645 | } |
1da177e4 LT |
3646 | |
3647 | /* Send SCO data */ | |
0d861d8b | 3648 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3649 | { |
3650 | struct hci_dev *hdev = conn->hdev; | |
3651 | struct hci_sco_hdr hdr; | |
3652 | ||
3653 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3654 | ||
aca3192c | 3655 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3656 | hdr.dlen = skb->len; |
3657 | ||
badff6d0 ACM |
3658 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3659 | skb_reset_transport_header(skb); | |
9c70220b | 3660 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3661 | |
0d48d939 | 3662 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3663 | |
1da177e4 | 3664 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3665 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3666 | } |
1da177e4 LT |
3667 | |
3668 | /* ---- HCI TX task (outgoing data) ---- */ | |
3669 | ||
3670 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3671 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3672 | int *quote) | |
1da177e4 LT |
3673 | { |
3674 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3675 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3676 | unsigned int num = 0, min = ~0; |
1da177e4 | 3677 | |
8e87d142 | 3678 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3679 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3680 | |
3681 | rcu_read_lock(); | |
3682 | ||
3683 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3684 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3685 | continue; |
769be974 MH |
3686 | |
3687 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3688 | continue; | |
3689 | ||
1da177e4 LT |
3690 | num++; |
3691 | ||
3692 | if (c->sent < min) { | |
3693 | min = c->sent; | |
3694 | conn = c; | |
3695 | } | |
52087a79 LAD |
3696 | |
3697 | if (hci_conn_num(hdev, type) == num) | |
3698 | break; | |
1da177e4 LT |
3699 | } |
3700 | ||
bf4c6325 GP |
3701 | rcu_read_unlock(); |
3702 | ||
1da177e4 | 3703 | if (conn) { |
6ed58ec5 VT |
3704 | int cnt, q; |
3705 | ||
3706 | switch (conn->type) { | |
3707 | case ACL_LINK: | |
3708 | cnt = hdev->acl_cnt; | |
3709 | break; | |
3710 | case SCO_LINK: | |
3711 | case ESCO_LINK: | |
3712 | cnt = hdev->sco_cnt; | |
3713 | break; | |
3714 | case LE_LINK: | |
3715 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3716 | break; | |
3717 | default: | |
3718 | cnt = 0; | |
3719 | BT_ERR("Unknown link type"); | |
3720 | } | |
3721 | ||
3722 | q = cnt / num; | |
1da177e4 LT |
3723 | *quote = q ? q : 1; |
3724 | } else | |
3725 | *quote = 0; | |
3726 | ||
3727 | BT_DBG("conn %p quote %d", conn, *quote); | |
3728 | return conn; | |
3729 | } | |
3730 | ||
6039aa73 | 3731 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3732 | { |
3733 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3734 | struct hci_conn *c; |
1da177e4 | 3735 | |
bae1f5d9 | 3736 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3737 | |
bf4c6325 GP |
3738 | rcu_read_lock(); |
3739 | ||
1da177e4 | 3740 | /* Kill stalled connections */ |
bf4c6325 | 3741 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3742 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3743 | BT_ERR("%s killing stalled connection %pMR", |
3744 | hdev->name, &c->dst); | |
bed71748 | 3745 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3746 | } |
3747 | } | |
bf4c6325 GP |
3748 | |
3749 | rcu_read_unlock(); | |
1da177e4 LT |
3750 | } |
3751 | ||
6039aa73 GP |
3752 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3753 | int *quote) | |
1da177e4 | 3754 | { |
73d80deb LAD |
3755 | struct hci_conn_hash *h = &hdev->conn_hash; |
3756 | struct hci_chan *chan = NULL; | |
abc5de8f | 3757 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3758 | struct hci_conn *conn; |
73d80deb LAD |
3759 | int cnt, q, conn_num = 0; |
3760 | ||
3761 | BT_DBG("%s", hdev->name); | |
3762 | ||
bf4c6325 GP |
3763 | rcu_read_lock(); |
3764 | ||
3765 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3766 | struct hci_chan *tmp; |
3767 | ||
3768 | if (conn->type != type) | |
3769 | continue; | |
3770 | ||
3771 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3772 | continue; | |
3773 | ||
3774 | conn_num++; | |
3775 | ||
8192edef | 3776 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3777 | struct sk_buff *skb; |
3778 | ||
3779 | if (skb_queue_empty(&tmp->data_q)) | |
3780 | continue; | |
3781 | ||
3782 | skb = skb_peek(&tmp->data_q); | |
3783 | if (skb->priority < cur_prio) | |
3784 | continue; | |
3785 | ||
3786 | if (skb->priority > cur_prio) { | |
3787 | num = 0; | |
3788 | min = ~0; | |
3789 | cur_prio = skb->priority; | |
3790 | } | |
3791 | ||
3792 | num++; | |
3793 | ||
3794 | if (conn->sent < min) { | |
3795 | min = conn->sent; | |
3796 | chan = tmp; | |
3797 | } | |
3798 | } | |
3799 | ||
3800 | if (hci_conn_num(hdev, type) == conn_num) | |
3801 | break; | |
3802 | } | |
3803 | ||
bf4c6325 GP |
3804 | rcu_read_unlock(); |
3805 | ||
73d80deb LAD |
3806 | if (!chan) |
3807 | return NULL; | |
3808 | ||
3809 | switch (chan->conn->type) { | |
3810 | case ACL_LINK: | |
3811 | cnt = hdev->acl_cnt; | |
3812 | break; | |
bd1eb66b AE |
3813 | case AMP_LINK: |
3814 | cnt = hdev->block_cnt; | |
3815 | break; | |
73d80deb LAD |
3816 | case SCO_LINK: |
3817 | case ESCO_LINK: | |
3818 | cnt = hdev->sco_cnt; | |
3819 | break; | |
3820 | case LE_LINK: | |
3821 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3822 | break; | |
3823 | default: | |
3824 | cnt = 0; | |
3825 | BT_ERR("Unknown link type"); | |
3826 | } | |
3827 | ||
3828 | q = cnt / num; | |
3829 | *quote = q ? q : 1; | |
3830 | BT_DBG("chan %p quote %d", chan, *quote); | |
3831 | return chan; | |
3832 | } | |
3833 | ||
02b20f0b LAD |
3834 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3835 | { | |
3836 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3837 | struct hci_conn *conn; | |
3838 | int num = 0; | |
3839 | ||
3840 | BT_DBG("%s", hdev->name); | |
3841 | ||
bf4c6325 GP |
3842 | rcu_read_lock(); |
3843 | ||
3844 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3845 | struct hci_chan *chan; |
3846 | ||
3847 | if (conn->type != type) | |
3848 | continue; | |
3849 | ||
3850 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3851 | continue; | |
3852 | ||
3853 | num++; | |
3854 | ||
8192edef | 3855 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3856 | struct sk_buff *skb; |
3857 | ||
3858 | if (chan->sent) { | |
3859 | chan->sent = 0; | |
3860 | continue; | |
3861 | } | |
3862 | ||
3863 | if (skb_queue_empty(&chan->data_q)) | |
3864 | continue; | |
3865 | ||
3866 | skb = skb_peek(&chan->data_q); | |
3867 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3868 | continue; | |
3869 | ||
3870 | skb->priority = HCI_PRIO_MAX - 1; | |
3871 | ||
3872 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3873 | skb->priority); |
02b20f0b LAD |
3874 | } |
3875 | ||
3876 | if (hci_conn_num(hdev, type) == num) | |
3877 | break; | |
3878 | } | |
bf4c6325 GP |
3879 | |
3880 | rcu_read_unlock(); | |
3881 | ||
02b20f0b LAD |
3882 | } |
3883 | ||
b71d385a AE |
3884 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3885 | { | |
3886 | /* Calculate count of blocks used by this packet */ | |
3887 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3888 | } | |
3889 | ||
6039aa73 | 3890 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3891 | { |
d7a5a11d | 3892 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3893 | /* ACL tx timeout must be longer than maximum |
3894 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3895 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3896 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3897 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3898 | } |
63d2bc1b | 3899 | } |
1da177e4 | 3900 | |
6039aa73 | 3901 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3902 | { |
3903 | unsigned int cnt = hdev->acl_cnt; | |
3904 | struct hci_chan *chan; | |
3905 | struct sk_buff *skb; | |
3906 | int quote; | |
3907 | ||
3908 | __check_timeout(hdev, cnt); | |
04837f64 | 3909 | |
73d80deb | 3910 | while (hdev->acl_cnt && |
a8c5fb1a | 3911 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3912 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3913 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3914 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3915 | skb->len, skb->priority); |
73d80deb | 3916 | |
ec1cce24 LAD |
3917 | /* Stop if priority has changed */ |
3918 | if (skb->priority < priority) | |
3919 | break; | |
3920 | ||
3921 | skb = skb_dequeue(&chan->data_q); | |
3922 | ||
73d80deb | 3923 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3924 | bt_cb(skb)->force_active); |
04837f64 | 3925 | |
57d17d70 | 3926 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3927 | hdev->acl_last_tx = jiffies; |
3928 | ||
3929 | hdev->acl_cnt--; | |
73d80deb LAD |
3930 | chan->sent++; |
3931 | chan->conn->sent++; | |
1da177e4 LT |
3932 | } |
3933 | } | |
02b20f0b LAD |
3934 | |
3935 | if (cnt != hdev->acl_cnt) | |
3936 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3937 | } |
3938 | ||
6039aa73 | 3939 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3940 | { |
63d2bc1b | 3941 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3942 | struct hci_chan *chan; |
3943 | struct sk_buff *skb; | |
3944 | int quote; | |
bd1eb66b | 3945 | u8 type; |
b71d385a | 3946 | |
63d2bc1b | 3947 | __check_timeout(hdev, cnt); |
b71d385a | 3948 | |
bd1eb66b AE |
3949 | BT_DBG("%s", hdev->name); |
3950 | ||
3951 | if (hdev->dev_type == HCI_AMP) | |
3952 | type = AMP_LINK; | |
3953 | else | |
3954 | type = ACL_LINK; | |
3955 | ||
b71d385a | 3956 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3957 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3958 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3959 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3960 | int blocks; | |
3961 | ||
3962 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3963 | skb->len, skb->priority); |
b71d385a AE |
3964 | |
3965 | /* Stop if priority has changed */ | |
3966 | if (skb->priority < priority) | |
3967 | break; | |
3968 | ||
3969 | skb = skb_dequeue(&chan->data_q); | |
3970 | ||
3971 | blocks = __get_blocks(hdev, skb); | |
3972 | if (blocks > hdev->block_cnt) | |
3973 | return; | |
3974 | ||
3975 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3976 | bt_cb(skb)->force_active); |
b71d385a | 3977 | |
57d17d70 | 3978 | hci_send_frame(hdev, skb); |
b71d385a AE |
3979 | hdev->acl_last_tx = jiffies; |
3980 | ||
3981 | hdev->block_cnt -= blocks; | |
3982 | quote -= blocks; | |
3983 | ||
3984 | chan->sent += blocks; | |
3985 | chan->conn->sent += blocks; | |
3986 | } | |
3987 | } | |
3988 | ||
3989 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3990 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3991 | } |
3992 | ||
6039aa73 | 3993 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3994 | { |
3995 | BT_DBG("%s", hdev->name); | |
3996 | ||
bd1eb66b AE |
3997 | /* No ACL link over BR/EDR controller */ |
3998 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3999 | return; | |
4000 | ||
4001 | /* No AMP link over AMP controller */ | |
4002 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4003 | return; |
4004 | ||
4005 | switch (hdev->flow_ctl_mode) { | |
4006 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4007 | hci_sched_acl_pkt(hdev); | |
4008 | break; | |
4009 | ||
4010 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4011 | hci_sched_acl_blk(hdev); | |
4012 | break; | |
4013 | } | |
4014 | } | |
4015 | ||
1da177e4 | 4016 | /* Schedule SCO */ |
6039aa73 | 4017 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4018 | { |
4019 | struct hci_conn *conn; | |
4020 | struct sk_buff *skb; | |
4021 | int quote; | |
4022 | ||
4023 | BT_DBG("%s", hdev->name); | |
4024 | ||
52087a79 LAD |
4025 | if (!hci_conn_num(hdev, SCO_LINK)) |
4026 | return; | |
4027 | ||
1da177e4 LT |
4028 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4029 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4030 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4031 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4032 | |
4033 | conn->sent++; | |
4034 | if (conn->sent == ~0) | |
4035 | conn->sent = 0; | |
4036 | } | |
4037 | } | |
4038 | } | |
4039 | ||
6039aa73 | 4040 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4041 | { |
4042 | struct hci_conn *conn; | |
4043 | struct sk_buff *skb; | |
4044 | int quote; | |
4045 | ||
4046 | BT_DBG("%s", hdev->name); | |
4047 | ||
52087a79 LAD |
4048 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4049 | return; | |
4050 | ||
8fc9ced3 GP |
4051 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4052 | "e))) { | |
b6a0dc82 MH |
4053 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4054 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4055 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4056 | |
4057 | conn->sent++; | |
4058 | if (conn->sent == ~0) | |
4059 | conn->sent = 0; | |
4060 | } | |
4061 | } | |
4062 | } | |
4063 | ||
6039aa73 | 4064 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4065 | { |
73d80deb | 4066 | struct hci_chan *chan; |
6ed58ec5 | 4067 | struct sk_buff *skb; |
02b20f0b | 4068 | int quote, cnt, tmp; |
6ed58ec5 VT |
4069 | |
4070 | BT_DBG("%s", hdev->name); | |
4071 | ||
52087a79 LAD |
4072 | if (!hci_conn_num(hdev, LE_LINK)) |
4073 | return; | |
4074 | ||
d7a5a11d | 4075 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
4076 | /* LE tx timeout must be longer than maximum |
4077 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4078 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4079 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4080 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4081 | } |
4082 | ||
4083 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4084 | tmp = cnt; |
73d80deb | 4085 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4086 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4087 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4088 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4089 | skb->len, skb->priority); |
6ed58ec5 | 4090 | |
ec1cce24 LAD |
4091 | /* Stop if priority has changed */ |
4092 | if (skb->priority < priority) | |
4093 | break; | |
4094 | ||
4095 | skb = skb_dequeue(&chan->data_q); | |
4096 | ||
57d17d70 | 4097 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4098 | hdev->le_last_tx = jiffies; |
4099 | ||
4100 | cnt--; | |
73d80deb LAD |
4101 | chan->sent++; |
4102 | chan->conn->sent++; | |
6ed58ec5 VT |
4103 | } |
4104 | } | |
73d80deb | 4105 | |
6ed58ec5 VT |
4106 | if (hdev->le_pkts) |
4107 | hdev->le_cnt = cnt; | |
4108 | else | |
4109 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4110 | |
4111 | if (cnt != tmp) | |
4112 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4113 | } |
4114 | ||
3eff45ea | 4115 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4116 | { |
3eff45ea | 4117 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4118 | struct sk_buff *skb; |
4119 | ||
6ed58ec5 | 4120 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4121 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4122 | |
d7a5a11d | 4123 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4124 | /* Schedule queues and send stuff to HCI driver */ |
4125 | hci_sched_acl(hdev); | |
4126 | hci_sched_sco(hdev); | |
4127 | hci_sched_esco(hdev); | |
4128 | hci_sched_le(hdev); | |
4129 | } | |
6ed58ec5 | 4130 | |
1da177e4 LT |
4131 | /* Send next queued raw (unknown type) packet */ |
4132 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4133 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4134 | } |
4135 | ||
25985edc | 4136 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4137 | |
4138 | /* ACL data packet */ | |
6039aa73 | 4139 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4140 | { |
4141 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4142 | struct hci_conn *conn; | |
4143 | __u16 handle, flags; | |
4144 | ||
4145 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4146 | ||
4147 | handle = __le16_to_cpu(hdr->handle); | |
4148 | flags = hci_flags(handle); | |
4149 | handle = hci_handle(handle); | |
4150 | ||
f0e09510 | 4151 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4152 | handle, flags); |
1da177e4 LT |
4153 | |
4154 | hdev->stat.acl_rx++; | |
4155 | ||
4156 | hci_dev_lock(hdev); | |
4157 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4158 | hci_dev_unlock(hdev); | |
8e87d142 | 4159 | |
1da177e4 | 4160 | if (conn) { |
65983fc7 | 4161 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4162 | |
1da177e4 | 4163 | /* Send to upper protocol */ |
686ebf28 UF |
4164 | l2cap_recv_acldata(conn, skb, flags); |
4165 | return; | |
1da177e4 | 4166 | } else { |
8e87d142 | 4167 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4168 | hdev->name, handle); |
1da177e4 LT |
4169 | } |
4170 | ||
4171 | kfree_skb(skb); | |
4172 | } | |
4173 | ||
4174 | /* SCO data packet */ | |
6039aa73 | 4175 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4176 | { |
4177 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4178 | struct hci_conn *conn; | |
4179 | __u16 handle; | |
4180 | ||
4181 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4182 | ||
4183 | handle = __le16_to_cpu(hdr->handle); | |
4184 | ||
f0e09510 | 4185 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4186 | |
4187 | hdev->stat.sco_rx++; | |
4188 | ||
4189 | hci_dev_lock(hdev); | |
4190 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4191 | hci_dev_unlock(hdev); | |
4192 | ||
4193 | if (conn) { | |
1da177e4 | 4194 | /* Send to upper protocol */ |
686ebf28 UF |
4195 | sco_recv_scodata(conn, skb); |
4196 | return; | |
1da177e4 | 4197 | } else { |
8e87d142 | 4198 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4199 | hdev->name, handle); |
1da177e4 LT |
4200 | } |
4201 | ||
4202 | kfree_skb(skb); | |
4203 | } | |
4204 | ||
9238f36a JH |
4205 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4206 | { | |
4207 | struct sk_buff *skb; | |
4208 | ||
4209 | skb = skb_peek(&hdev->cmd_q); | |
4210 | if (!skb) | |
4211 | return true; | |
4212 | ||
db6e3e8d | 4213 | return bt_cb(skb)->req.start; |
9238f36a JH |
4214 | } |
4215 | ||
42c6b129 JH |
4216 | static void hci_resend_last(struct hci_dev *hdev) |
4217 | { | |
4218 | struct hci_command_hdr *sent; | |
4219 | struct sk_buff *skb; | |
4220 | u16 opcode; | |
4221 | ||
4222 | if (!hdev->sent_cmd) | |
4223 | return; | |
4224 | ||
4225 | sent = (void *) hdev->sent_cmd->data; | |
4226 | opcode = __le16_to_cpu(sent->opcode); | |
4227 | if (opcode == HCI_OP_RESET) | |
4228 | return; | |
4229 | ||
4230 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4231 | if (!skb) | |
4232 | return; | |
4233 | ||
4234 | skb_queue_head(&hdev->cmd_q, skb); | |
4235 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4236 | } | |
4237 | ||
e6214487 JH |
4238 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4239 | hci_req_complete_t *req_complete, | |
4240 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4241 | { |
9238f36a JH |
4242 | struct sk_buff *skb; |
4243 | unsigned long flags; | |
4244 | ||
4245 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4246 | ||
42c6b129 JH |
4247 | /* If the completed command doesn't match the last one that was |
4248 | * sent we need to do special handling of it. | |
9238f36a | 4249 | */ |
42c6b129 JH |
4250 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4251 | /* Some CSR based controllers generate a spontaneous | |
4252 | * reset complete event during init and any pending | |
4253 | * command will never be completed. In such a case we | |
4254 | * need to resend whatever was the last sent | |
4255 | * command. | |
4256 | */ | |
4257 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4258 | hci_resend_last(hdev); | |
4259 | ||
9238f36a | 4260 | return; |
42c6b129 | 4261 | } |
9238f36a JH |
4262 | |
4263 | /* If the command succeeded and there's still more commands in | |
4264 | * this request the request is not yet complete. | |
4265 | */ | |
4266 | if (!status && !hci_req_is_complete(hdev)) | |
4267 | return; | |
4268 | ||
4269 | /* If this was the last command in a request the complete | |
4270 | * callback would be found in hdev->sent_cmd instead of the | |
4271 | * command queue (hdev->cmd_q). | |
4272 | */ | |
e6214487 JH |
4273 | if (bt_cb(hdev->sent_cmd)->req.complete) { |
4274 | *req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
4275 | return; | |
4276 | } | |
53e21fbc | 4277 | |
e6214487 JH |
4278 | if (bt_cb(hdev->sent_cmd)->req.complete_skb) { |
4279 | *req_complete_skb = bt_cb(hdev->sent_cmd)->req.complete_skb; | |
4280 | return; | |
9238f36a JH |
4281 | } |
4282 | ||
4283 | /* Remove all pending commands belonging to this request */ | |
4284 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4285 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
db6e3e8d | 4286 | if (bt_cb(skb)->req.start) { |
9238f36a JH |
4287 | __skb_queue_head(&hdev->cmd_q, skb); |
4288 | break; | |
4289 | } | |
4290 | ||
e6214487 JH |
4291 | *req_complete = bt_cb(skb)->req.complete; |
4292 | *req_complete_skb = bt_cb(skb)->req.complete_skb; | |
9238f36a JH |
4293 | kfree_skb(skb); |
4294 | } | |
4295 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4296 | } |
4297 | ||
b78752cc | 4298 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4299 | { |
b78752cc | 4300 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4301 | struct sk_buff *skb; |
4302 | ||
4303 | BT_DBG("%s", hdev->name); | |
4304 | ||
1da177e4 | 4305 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4306 | /* Send copy to monitor */ |
4307 | hci_send_to_monitor(hdev, skb); | |
4308 | ||
1da177e4 LT |
4309 | if (atomic_read(&hdev->promisc)) { |
4310 | /* Send copy to the sockets */ | |
470fe1b5 | 4311 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4312 | } |
4313 | ||
d7a5a11d | 4314 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4315 | kfree_skb(skb); |
4316 | continue; | |
4317 | } | |
4318 | ||
4319 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4320 | /* Don't process data packets in this states. */ | |
0d48d939 | 4321 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4322 | case HCI_ACLDATA_PKT: |
4323 | case HCI_SCODATA_PKT: | |
4324 | kfree_skb(skb); | |
4325 | continue; | |
3ff50b79 | 4326 | } |
1da177e4 LT |
4327 | } |
4328 | ||
4329 | /* Process frame */ | |
0d48d939 | 4330 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4331 | case HCI_EVENT_PKT: |
b78752cc | 4332 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4333 | hci_event_packet(hdev, skb); |
4334 | break; | |
4335 | ||
4336 | case HCI_ACLDATA_PKT: | |
4337 | BT_DBG("%s ACL data packet", hdev->name); | |
4338 | hci_acldata_packet(hdev, skb); | |
4339 | break; | |
4340 | ||
4341 | case HCI_SCODATA_PKT: | |
4342 | BT_DBG("%s SCO data packet", hdev->name); | |
4343 | hci_scodata_packet(hdev, skb); | |
4344 | break; | |
4345 | ||
4346 | default: | |
4347 | kfree_skb(skb); | |
4348 | break; | |
4349 | } | |
4350 | } | |
1da177e4 LT |
4351 | } |
4352 | ||
c347b765 | 4353 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4354 | { |
c347b765 | 4355 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4356 | struct sk_buff *skb; |
4357 | ||
2104786b AE |
4358 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4359 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4360 | |
1da177e4 | 4361 | /* Send queued commands */ |
5a08ecce AE |
4362 | if (atomic_read(&hdev->cmd_cnt)) { |
4363 | skb = skb_dequeue(&hdev->cmd_q); | |
4364 | if (!skb) | |
4365 | return; | |
4366 | ||
7585b97a | 4367 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4368 | |
a675d7f1 | 4369 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4370 | if (hdev->sent_cmd) { |
1da177e4 | 4371 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4372 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4373 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4374 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4375 | else |
65cc2b49 MH |
4376 | schedule_delayed_work(&hdev->cmd_timer, |
4377 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4378 | } else { |
4379 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4380 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4381 | } |
4382 | } | |
4383 | } |