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 | ||
111902f7 | 83 | buf[0] = test_bit(HCI_DUT_MODE, &hdev->dbg_flags) ? 'Y': 'N'; |
4b4148e9 MH |
84 | buf[1] = '\n'; |
85 | buf[2] = '\0'; | |
86 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
87 | } | |
88 | ||
89 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
90 | size_t count, loff_t *ppos) | |
91 | { | |
92 | struct hci_dev *hdev = file->private_data; | |
93 | struct sk_buff *skb; | |
94 | char buf[32]; | |
95 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
96 | bool enable; | |
97 | int err; | |
98 | ||
99 | if (!test_bit(HCI_UP, &hdev->flags)) | |
100 | return -ENETDOWN; | |
101 | ||
102 | if (copy_from_user(buf, user_buf, buf_size)) | |
103 | return -EFAULT; | |
104 | ||
105 | buf[buf_size] = '\0'; | |
106 | if (strtobool(buf, &enable)) | |
107 | return -EINVAL; | |
108 | ||
111902f7 | 109 | if (enable == test_bit(HCI_DUT_MODE, &hdev->dbg_flags)) |
4b4148e9 MH |
110 | return -EALREADY; |
111 | ||
112 | hci_req_lock(hdev); | |
113 | if (enable) | |
114 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
115 | HCI_CMD_TIMEOUT); | |
116 | else | |
117 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
118 | HCI_CMD_TIMEOUT); | |
119 | hci_req_unlock(hdev); | |
120 | ||
121 | if (IS_ERR(skb)) | |
122 | return PTR_ERR(skb); | |
123 | ||
124 | err = -bt_to_errno(skb->data[0]); | |
125 | kfree_skb(skb); | |
126 | ||
127 | if (err < 0) | |
128 | return err; | |
129 | ||
111902f7 | 130 | change_bit(HCI_DUT_MODE, &hdev->dbg_flags); |
4b4148e9 MH |
131 | |
132 | return count; | |
133 | } | |
134 | ||
135 | static const struct file_operations dut_mode_fops = { | |
136 | .open = simple_open, | |
137 | .read = dut_mode_read, | |
138 | .write = dut_mode_write, | |
139 | .llseek = default_llseek, | |
140 | }; | |
141 | ||
1da177e4 LT |
142 | /* ---- HCI requests ---- */ |
143 | ||
1904a853 | 144 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode) |
1da177e4 | 145 | { |
42c6b129 | 146 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
147 | |
148 | if (hdev->req_status == HCI_REQ_PEND) { | |
149 | hdev->req_result = result; | |
150 | hdev->req_status = HCI_REQ_DONE; | |
151 | wake_up_interruptible(&hdev->req_wait_q); | |
152 | } | |
153 | } | |
154 | ||
155 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
156 | { | |
157 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
158 | ||
159 | if (hdev->req_status == HCI_REQ_PEND) { | |
160 | hdev->req_result = err; | |
161 | hdev->req_status = HCI_REQ_CANCELED; | |
162 | wake_up_interruptible(&hdev->req_wait_q); | |
163 | } | |
164 | } | |
165 | ||
77a63e0a FW |
166 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
167 | u8 event) | |
75e84b7c JH |
168 | { |
169 | struct hci_ev_cmd_complete *ev; | |
170 | struct hci_event_hdr *hdr; | |
171 | struct sk_buff *skb; | |
172 | ||
173 | hci_dev_lock(hdev); | |
174 | ||
175 | skb = hdev->recv_evt; | |
176 | hdev->recv_evt = NULL; | |
177 | ||
178 | hci_dev_unlock(hdev); | |
179 | ||
180 | if (!skb) | |
181 | return ERR_PTR(-ENODATA); | |
182 | ||
183 | if (skb->len < sizeof(*hdr)) { | |
184 | BT_ERR("Too short HCI event"); | |
185 | goto failed; | |
186 | } | |
187 | ||
188 | hdr = (void *) skb->data; | |
189 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
190 | ||
7b1abbbe JH |
191 | if (event) { |
192 | if (hdr->evt != event) | |
193 | goto failed; | |
194 | return skb; | |
195 | } | |
196 | ||
75e84b7c JH |
197 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
198 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
199 | goto failed; | |
200 | } | |
201 | ||
202 | if (skb->len < sizeof(*ev)) { | |
203 | BT_ERR("Too short cmd_complete event"); | |
204 | goto failed; | |
205 | } | |
206 | ||
207 | ev = (void *) skb->data; | |
208 | skb_pull(skb, sizeof(*ev)); | |
209 | ||
210 | if (opcode == __le16_to_cpu(ev->opcode)) | |
211 | return skb; | |
212 | ||
213 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
214 | __le16_to_cpu(ev->opcode)); | |
215 | ||
216 | failed: | |
217 | kfree_skb(skb); | |
218 | return ERR_PTR(-ENODATA); | |
219 | } | |
220 | ||
7b1abbbe | 221 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 222 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
223 | { |
224 | DECLARE_WAITQUEUE(wait, current); | |
225 | struct hci_request req; | |
226 | int err = 0; | |
227 | ||
228 | BT_DBG("%s", hdev->name); | |
229 | ||
230 | hci_req_init(&req, hdev); | |
231 | ||
7b1abbbe | 232 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
233 | |
234 | hdev->req_status = HCI_REQ_PEND; | |
235 | ||
75e84b7c JH |
236 | add_wait_queue(&hdev->req_wait_q, &wait); |
237 | set_current_state(TASK_INTERRUPTIBLE); | |
238 | ||
039fada5 CP |
239 | err = hci_req_run(&req, hci_req_sync_complete); |
240 | if (err < 0) { | |
241 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
22a3ceab | 242 | set_current_state(TASK_RUNNING); |
039fada5 CP |
243 | return ERR_PTR(err); |
244 | } | |
245 | ||
75e84b7c JH |
246 | schedule_timeout(timeout); |
247 | ||
248 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
249 | ||
250 | if (signal_pending(current)) | |
251 | return ERR_PTR(-EINTR); | |
252 | ||
253 | switch (hdev->req_status) { | |
254 | case HCI_REQ_DONE: | |
255 | err = -bt_to_errno(hdev->req_result); | |
256 | break; | |
257 | ||
258 | case HCI_REQ_CANCELED: | |
259 | err = -hdev->req_result; | |
260 | break; | |
261 | ||
262 | default: | |
263 | err = -ETIMEDOUT; | |
264 | break; | |
265 | } | |
266 | ||
267 | hdev->req_status = hdev->req_result = 0; | |
268 | ||
269 | BT_DBG("%s end: err %d", hdev->name, err); | |
270 | ||
271 | if (err < 0) | |
272 | return ERR_PTR(err); | |
273 | ||
7b1abbbe JH |
274 | return hci_get_cmd_complete(hdev, opcode, event); |
275 | } | |
276 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
277 | ||
278 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 279 | const void *param, u32 timeout) |
7b1abbbe JH |
280 | { |
281 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
282 | } |
283 | EXPORT_SYMBOL(__hci_cmd_sync); | |
284 | ||
1da177e4 | 285 | /* Execute request and wait for completion. */ |
01178cd4 | 286 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
287 | void (*func)(struct hci_request *req, |
288 | unsigned long opt), | |
01178cd4 | 289 | unsigned long opt, __u32 timeout) |
1da177e4 | 290 | { |
42c6b129 | 291 | struct hci_request req; |
1da177e4 LT |
292 | DECLARE_WAITQUEUE(wait, current); |
293 | int err = 0; | |
294 | ||
295 | BT_DBG("%s start", hdev->name); | |
296 | ||
42c6b129 JH |
297 | hci_req_init(&req, hdev); |
298 | ||
1da177e4 LT |
299 | hdev->req_status = HCI_REQ_PEND; |
300 | ||
42c6b129 | 301 | func(&req, opt); |
53cce22d | 302 | |
039fada5 CP |
303 | add_wait_queue(&hdev->req_wait_q, &wait); |
304 | set_current_state(TASK_INTERRUPTIBLE); | |
305 | ||
42c6b129 JH |
306 | err = hci_req_run(&req, hci_req_sync_complete); |
307 | if (err < 0) { | |
53cce22d | 308 | hdev->req_status = 0; |
920c8300 | 309 | |
039fada5 | 310 | remove_wait_queue(&hdev->req_wait_q, &wait); |
22a3ceab | 311 | set_current_state(TASK_RUNNING); |
039fada5 | 312 | |
920c8300 AG |
313 | /* ENODATA means the HCI request command queue is empty. |
314 | * This can happen when a request with conditionals doesn't | |
315 | * trigger any commands to be sent. This is normal behavior | |
316 | * and should not trigger an error return. | |
42c6b129 | 317 | */ |
920c8300 AG |
318 | if (err == -ENODATA) |
319 | return 0; | |
320 | ||
321 | return err; | |
53cce22d JH |
322 | } |
323 | ||
1da177e4 LT |
324 | schedule_timeout(timeout); |
325 | ||
326 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
327 | ||
328 | if (signal_pending(current)) | |
329 | return -EINTR; | |
330 | ||
331 | switch (hdev->req_status) { | |
332 | case HCI_REQ_DONE: | |
e175072f | 333 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
334 | break; |
335 | ||
336 | case HCI_REQ_CANCELED: | |
337 | err = -hdev->req_result; | |
338 | break; | |
339 | ||
340 | default: | |
341 | err = -ETIMEDOUT; | |
342 | break; | |
3ff50b79 | 343 | } |
1da177e4 | 344 | |
a5040efa | 345 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
346 | |
347 | BT_DBG("%s end: err %d", hdev->name, err); | |
348 | ||
349 | return err; | |
350 | } | |
351 | ||
01178cd4 | 352 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
353 | void (*req)(struct hci_request *req, |
354 | unsigned long opt), | |
01178cd4 | 355 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
356 | { |
357 | int ret; | |
358 | ||
7c6a329e MH |
359 | if (!test_bit(HCI_UP, &hdev->flags)) |
360 | return -ENETDOWN; | |
361 | ||
1da177e4 LT |
362 | /* Serialize all requests */ |
363 | hci_req_lock(hdev); | |
01178cd4 | 364 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
365 | hci_req_unlock(hdev); |
366 | ||
367 | return ret; | |
368 | } | |
369 | ||
42c6b129 | 370 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 371 | { |
42c6b129 | 372 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
373 | |
374 | /* Reset device */ | |
42c6b129 JH |
375 | set_bit(HCI_RESET, &req->hdev->flags); |
376 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
377 | } |
378 | ||
42c6b129 | 379 | static void bredr_init(struct hci_request *req) |
1da177e4 | 380 | { |
42c6b129 | 381 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 382 | |
1da177e4 | 383 | /* Read Local Supported Features */ |
42c6b129 | 384 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 385 | |
1143e5a6 | 386 | /* Read Local Version */ |
42c6b129 | 387 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
388 | |
389 | /* Read BD Address */ | |
42c6b129 | 390 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
391 | } |
392 | ||
0af801b9 | 393 | static void amp_init1(struct hci_request *req) |
e61ef499 | 394 | { |
42c6b129 | 395 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 396 | |
e61ef499 | 397 | /* Read Local Version */ |
42c6b129 | 398 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 399 | |
f6996cfe MH |
400 | /* Read Local Supported Commands */ |
401 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
402 | ||
6bcbc489 | 403 | /* Read Local AMP Info */ |
42c6b129 | 404 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
405 | |
406 | /* Read Data Blk size */ | |
42c6b129 | 407 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 408 | |
f38ba941 MH |
409 | /* Read Flow Control Mode */ |
410 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
411 | ||
7528ca1c MH |
412 | /* Read Location Data */ |
413 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
414 | } |
415 | ||
0af801b9 JH |
416 | static void amp_init2(struct hci_request *req) |
417 | { | |
418 | /* Read Local Supported Features. Not all AMP controllers | |
419 | * support this so it's placed conditionally in the second | |
420 | * stage init. | |
421 | */ | |
422 | if (req->hdev->commands[14] & 0x20) | |
423 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
424 | } | |
425 | ||
42c6b129 | 426 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 427 | { |
42c6b129 | 428 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
429 | |
430 | BT_DBG("%s %ld", hdev->name, opt); | |
431 | ||
11778716 AE |
432 | /* Reset */ |
433 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 434 | hci_reset_req(req, 0); |
11778716 | 435 | |
e61ef499 AE |
436 | switch (hdev->dev_type) { |
437 | case HCI_BREDR: | |
42c6b129 | 438 | bredr_init(req); |
e61ef499 AE |
439 | break; |
440 | ||
441 | case HCI_AMP: | |
0af801b9 | 442 | amp_init1(req); |
e61ef499 AE |
443 | break; |
444 | ||
445 | default: | |
446 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
447 | break; | |
448 | } | |
e61ef499 AE |
449 | } |
450 | ||
42c6b129 | 451 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 452 | { |
2177bab5 JH |
453 | __le16 param; |
454 | __u8 flt_type; | |
455 | ||
456 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 457 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
458 | |
459 | /* Read Class of Device */ | |
42c6b129 | 460 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
461 | |
462 | /* Read Local Name */ | |
42c6b129 | 463 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
464 | |
465 | /* Read Voice Setting */ | |
42c6b129 | 466 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 467 | |
b4cb9fb2 MH |
468 | /* Read Number of Supported IAC */ |
469 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
470 | ||
4b836f39 MH |
471 | /* Read Current IAC LAP */ |
472 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
473 | ||
2177bab5 JH |
474 | /* Clear Event Filters */ |
475 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 476 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
477 | |
478 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 479 | param = cpu_to_le16(0x7d00); |
42c6b129 | 480 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
481 | } |
482 | ||
42c6b129 | 483 | static void le_setup(struct hci_request *req) |
2177bab5 | 484 | { |
c73eee91 JH |
485 | struct hci_dev *hdev = req->hdev; |
486 | ||
2177bab5 | 487 | /* Read LE Buffer Size */ |
42c6b129 | 488 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
489 | |
490 | /* Read LE Local Supported Features */ | |
42c6b129 | 491 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 492 | |
747d3f03 MH |
493 | /* Read LE Supported States */ |
494 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
495 | ||
2177bab5 | 496 | /* Read LE White List Size */ |
42c6b129 | 497 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 498 | |
747d3f03 MH |
499 | /* Clear LE White List */ |
500 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
501 | |
502 | /* LE-only controllers have LE implicitly enabled */ | |
503 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 504 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
505 | } |
506 | ||
42c6b129 | 507 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 508 | { |
42c6b129 JH |
509 | struct hci_dev *hdev = req->hdev; |
510 | ||
2177bab5 JH |
511 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
512 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
513 | * command otherwise. | |
514 | */ | |
515 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
516 | ||
517 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
518 | * any event mask for pre 1.2 devices. | |
519 | */ | |
520 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
521 | return; | |
522 | ||
523 | if (lmp_bredr_capable(hdev)) { | |
524 | events[4] |= 0x01; /* Flow Specification Complete */ | |
525 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
526 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
527 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
528 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
529 | } else { |
530 | /* Use a different default for LE-only devices */ | |
531 | memset(events, 0, sizeof(events)); | |
532 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
533 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
534 | events[1] |= 0x20; /* Command Complete */ | |
535 | events[1] |= 0x40; /* Command Status */ | |
536 | events[1] |= 0x80; /* Hardware Error */ | |
537 | events[2] |= 0x04; /* Number of Completed Packets */ | |
538 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
539 | |
540 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
541 | events[0] |= 0x80; /* Encryption Change */ | |
542 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
543 | } | |
2177bab5 JH |
544 | } |
545 | ||
546 | if (lmp_inq_rssi_capable(hdev)) | |
547 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
548 | ||
549 | if (lmp_sniffsubr_capable(hdev)) | |
550 | events[5] |= 0x20; /* Sniff Subrating */ | |
551 | ||
552 | if (lmp_pause_enc_capable(hdev)) | |
553 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
554 | ||
555 | if (lmp_ext_inq_capable(hdev)) | |
556 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
557 | ||
558 | if (lmp_no_flush_capable(hdev)) | |
559 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
560 | ||
561 | if (lmp_lsto_capable(hdev)) | |
562 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
563 | ||
564 | if (lmp_ssp_capable(hdev)) { | |
565 | events[6] |= 0x01; /* IO Capability Request */ | |
566 | events[6] |= 0x02; /* IO Capability Response */ | |
567 | events[6] |= 0x04; /* User Confirmation Request */ | |
568 | events[6] |= 0x08; /* User Passkey Request */ | |
569 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
570 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
571 | events[7] |= 0x04; /* User Passkey Notification */ | |
572 | events[7] |= 0x08; /* Keypress Notification */ | |
573 | events[7] |= 0x10; /* Remote Host Supported | |
574 | * Features Notification | |
575 | */ | |
576 | } | |
577 | ||
578 | if (lmp_le_capable(hdev)) | |
579 | events[7] |= 0x20; /* LE Meta-Event */ | |
580 | ||
42c6b129 | 581 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
582 | } |
583 | ||
42c6b129 | 584 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 585 | { |
42c6b129 JH |
586 | struct hci_dev *hdev = req->hdev; |
587 | ||
0af801b9 JH |
588 | if (hdev->dev_type == HCI_AMP) |
589 | return amp_init2(req); | |
590 | ||
2177bab5 | 591 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 592 | bredr_setup(req); |
56f87901 | 593 | else |
a358dc11 | 594 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
595 | |
596 | if (lmp_le_capable(hdev)) | |
42c6b129 | 597 | le_setup(req); |
2177bab5 | 598 | |
0f3adeae MH |
599 | /* All Bluetooth 1.2 and later controllers should support the |
600 | * HCI command for reading the local supported commands. | |
601 | * | |
602 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
603 | * but do not have support for this command. If that is the case, | |
604 | * the driver can quirk the behavior and skip reading the local | |
605 | * supported commands. | |
3f8e2d75 | 606 | */ |
0f3adeae MH |
607 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
608 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 609 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
610 | |
611 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
612 | /* When SSP is available, then the host features page |
613 | * should also be available as well. However some | |
614 | * controllers list the max_page as 0 as long as SSP | |
615 | * has not been enabled. To achieve proper debugging | |
616 | * output, force the minimum max_page to 1 at least. | |
617 | */ | |
618 | hdev->max_page = 0x01; | |
619 | ||
d7a5a11d | 620 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 621 | u8 mode = 0x01; |
574ea3c7 | 622 | |
42c6b129 JH |
623 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
624 | sizeof(mode), &mode); | |
2177bab5 JH |
625 | } else { |
626 | struct hci_cp_write_eir cp; | |
627 | ||
628 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
629 | memset(&cp, 0, sizeof(cp)); | |
630 | ||
42c6b129 | 631 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
632 | } |
633 | } | |
634 | ||
043ec9bf MH |
635 | if (lmp_inq_rssi_capable(hdev) || |
636 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
637 | u8 mode; |
638 | ||
639 | /* If Extended Inquiry Result events are supported, then | |
640 | * they are clearly preferred over Inquiry Result with RSSI | |
641 | * events. | |
642 | */ | |
643 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
644 | ||
645 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
646 | } | |
2177bab5 JH |
647 | |
648 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 649 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
650 | |
651 | if (lmp_ext_feat_capable(hdev)) { | |
652 | struct hci_cp_read_local_ext_features cp; | |
653 | ||
654 | cp.page = 0x01; | |
42c6b129 JH |
655 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
656 | sizeof(cp), &cp); | |
2177bab5 JH |
657 | } |
658 | ||
d7a5a11d | 659 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 660 | u8 enable = 1; |
42c6b129 JH |
661 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
662 | &enable); | |
2177bab5 JH |
663 | } |
664 | } | |
665 | ||
42c6b129 | 666 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 667 | { |
42c6b129 | 668 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
669 | struct hci_cp_write_def_link_policy cp; |
670 | u16 link_policy = 0; | |
671 | ||
672 | if (lmp_rswitch_capable(hdev)) | |
673 | link_policy |= HCI_LP_RSWITCH; | |
674 | if (lmp_hold_capable(hdev)) | |
675 | link_policy |= HCI_LP_HOLD; | |
676 | if (lmp_sniff_capable(hdev)) | |
677 | link_policy |= HCI_LP_SNIFF; | |
678 | if (lmp_park_capable(hdev)) | |
679 | link_policy |= HCI_LP_PARK; | |
680 | ||
681 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 682 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
683 | } |
684 | ||
42c6b129 | 685 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 686 | { |
42c6b129 | 687 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
688 | struct hci_cp_write_le_host_supported cp; |
689 | ||
c73eee91 JH |
690 | /* LE-only devices do not support explicit enablement */ |
691 | if (!lmp_bredr_capable(hdev)) | |
692 | return; | |
693 | ||
2177bab5 JH |
694 | memset(&cp, 0, sizeof(cp)); |
695 | ||
d7a5a11d | 696 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 697 | cp.le = 0x01; |
32226e4f | 698 | cp.simul = 0x00; |
2177bab5 JH |
699 | } |
700 | ||
701 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
702 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
703 | &cp); | |
2177bab5 JH |
704 | } |
705 | ||
d62e6d67 JH |
706 | static void hci_set_event_mask_page_2(struct hci_request *req) |
707 | { | |
708 | struct hci_dev *hdev = req->hdev; | |
709 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
710 | ||
711 | /* If Connectionless Slave Broadcast master role is supported | |
712 | * enable all necessary events for it. | |
713 | */ | |
53b834d2 | 714 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
715 | events[1] |= 0x40; /* Triggered Clock Capture */ |
716 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
717 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
718 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
719 | } | |
720 | ||
721 | /* If Connectionless Slave Broadcast slave role is supported | |
722 | * enable all necessary events for it. | |
723 | */ | |
53b834d2 | 724 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
725 | events[2] |= 0x01; /* Synchronization Train Received */ |
726 | events[2] |= 0x02; /* CSB Receive */ | |
727 | events[2] |= 0x04; /* CSB Timeout */ | |
728 | events[2] |= 0x08; /* Truncated Page Complete */ | |
729 | } | |
730 | ||
40c59fcb | 731 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 732 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
733 | events[2] |= 0x80; |
734 | ||
d62e6d67 JH |
735 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
736 | } | |
737 | ||
42c6b129 | 738 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 739 | { |
42c6b129 | 740 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 741 | u8 p; |
42c6b129 | 742 | |
0da71f1b MH |
743 | hci_setup_event_mask(req); |
744 | ||
48ce62c4 MH |
745 | if (hdev->commands[6] & 0x20) { |
746 | struct hci_cp_read_stored_link_key cp; | |
747 | ||
748 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
749 | cp.read_all = 0x01; | |
750 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
751 | } | |
752 | ||
2177bab5 | 753 | if (hdev->commands[5] & 0x10) |
42c6b129 | 754 | hci_setup_link_policy(req); |
2177bab5 | 755 | |
417287de MH |
756 | if (hdev->commands[8] & 0x01) |
757 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
758 | ||
759 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
760 | * support the Read Page Scan Type command. Check support for | |
761 | * this command in the bit mask of supported commands. | |
762 | */ | |
763 | if (hdev->commands[13] & 0x01) | |
764 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
765 | ||
9193c6e8 AG |
766 | if (lmp_le_capable(hdev)) { |
767 | u8 events[8]; | |
768 | ||
769 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
770 | events[0] = 0x0f; |
771 | ||
772 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
773 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
774 | |
775 | /* If controller supports the Connection Parameters Request | |
776 | * Link Layer Procedure, enable the corresponding event. | |
777 | */ | |
778 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
779 | events[0] |= 0x20; /* LE Remote Connection | |
780 | * Parameter Request | |
781 | */ | |
782 | ||
a9f6068e MH |
783 | /* If the controller supports the Data Length Extension |
784 | * feature, enable the corresponding event. | |
785 | */ | |
786 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
787 | events[0] |= 0x40; /* LE Data Length Change */ | |
788 | ||
4b71bba4 MH |
789 | /* If the controller supports Extended Scanner Filter |
790 | * Policies, enable the correspondig event. | |
791 | */ | |
792 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
793 | events[1] |= 0x04; /* LE Direct Advertising | |
794 | * Report | |
795 | */ | |
796 | ||
5a34bd5f MH |
797 | /* If the controller supports the LE Read Local P-256 |
798 | * Public Key command, enable the corresponding event. | |
799 | */ | |
800 | if (hdev->commands[34] & 0x02) | |
801 | events[0] |= 0x80; /* LE Read Local P-256 | |
802 | * Public Key Complete | |
803 | */ | |
804 | ||
805 | /* If the controller supports the LE Generate DHKey | |
806 | * command, enable the corresponding event. | |
807 | */ | |
808 | if (hdev->commands[34] & 0x04) | |
809 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
810 | ||
9193c6e8 AG |
811 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
812 | events); | |
813 | ||
15a49cca MH |
814 | if (hdev->commands[25] & 0x40) { |
815 | /* Read LE Advertising Channel TX Power */ | |
816 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
817 | } | |
818 | ||
a9f6068e MH |
819 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
820 | /* Read LE Maximum Data Length */ | |
821 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
822 | ||
823 | /* Read LE Suggested Default Data Length */ | |
824 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
825 | } | |
826 | ||
42c6b129 | 827 | hci_set_le_support(req); |
9193c6e8 | 828 | } |
d2c5d77f JH |
829 | |
830 | /* Read features beyond page 1 if available */ | |
831 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
832 | struct hci_cp_read_local_ext_features cp; | |
833 | ||
834 | cp.page = p; | |
835 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
836 | sizeof(cp), &cp); | |
837 | } | |
2177bab5 JH |
838 | } |
839 | ||
5d4e7e8d JH |
840 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
841 | { | |
842 | struct hci_dev *hdev = req->hdev; | |
843 | ||
36f260ce MH |
844 | /* Some Broadcom based Bluetooth controllers do not support the |
845 | * Delete Stored Link Key command. They are clearly indicating its | |
846 | * absence in the bit mask of supported commands. | |
847 | * | |
848 | * Check the supported commands and only if the the command is marked | |
849 | * as supported send it. If not supported assume that the controller | |
850 | * does not have actual support for stored link keys which makes this | |
851 | * command redundant anyway. | |
852 | * | |
853 | * Some controllers indicate that they support handling deleting | |
854 | * stored link keys, but they don't. The quirk lets a driver | |
855 | * just disable this command. | |
856 | */ | |
857 | if (hdev->commands[6] & 0x80 && | |
858 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
859 | struct hci_cp_delete_stored_link_key cp; | |
860 | ||
861 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
862 | cp.delete_all = 0x01; | |
863 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
864 | sizeof(cp), &cp); | |
865 | } | |
866 | ||
d62e6d67 JH |
867 | /* Set event mask page 2 if the HCI command for it is supported */ |
868 | if (hdev->commands[22] & 0x04) | |
869 | hci_set_event_mask_page_2(req); | |
870 | ||
109e3191 MH |
871 | /* Read local codec list if the HCI command is supported */ |
872 | if (hdev->commands[29] & 0x20) | |
873 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
874 | ||
f4fe73ed MH |
875 | /* Get MWS transport configuration if the HCI command is supported */ |
876 | if (hdev->commands[30] & 0x08) | |
877 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
878 | ||
5d4e7e8d | 879 | /* Check for Synchronization Train support */ |
53b834d2 | 880 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 881 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
882 | |
883 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 884 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 885 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 886 | u8 support = 0x01; |
574ea3c7 | 887 | |
a6d0d690 MH |
888 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
889 | sizeof(support), &support); | |
890 | } | |
5d4e7e8d JH |
891 | } |
892 | ||
2177bab5 JH |
893 | static int __hci_init(struct hci_dev *hdev) |
894 | { | |
895 | int err; | |
896 | ||
897 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
898 | if (err < 0) | |
899 | return err; | |
900 | ||
4b4148e9 MH |
901 | /* The Device Under Test (DUT) mode is special and available for |
902 | * all controller types. So just create it early on. | |
903 | */ | |
d7a5a11d | 904 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
4b4148e9 MH |
905 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, |
906 | &dut_mode_fops); | |
907 | } | |
908 | ||
0af801b9 JH |
909 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
910 | if (err < 0) | |
911 | return err; | |
912 | ||
2177bab5 JH |
913 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
914 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 915 | * first two stages of init. |
2177bab5 JH |
916 | */ |
917 | if (hdev->dev_type != HCI_BREDR) | |
918 | return 0; | |
919 | ||
5d4e7e8d JH |
920 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
921 | if (err < 0) | |
922 | return err; | |
923 | ||
baf27f6e MH |
924 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
925 | if (err < 0) | |
926 | return err; | |
927 | ||
ec6cef9c MH |
928 | /* This function is only called when the controller is actually in |
929 | * configured state. When the controller is marked as unconfigured, | |
930 | * this initialization procedure is not run. | |
931 | * | |
932 | * It means that it is possible that a controller runs through its | |
933 | * setup phase and then discovers missing settings. If that is the | |
934 | * case, then this function will not be called. It then will only | |
935 | * be called during the config phase. | |
936 | * | |
937 | * So only when in setup phase or config phase, create the debugfs | |
938 | * entries and register the SMP channels. | |
baf27f6e | 939 | */ |
d7a5a11d MH |
940 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
941 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
942 | return 0; |
943 | ||
60c5f5fb MH |
944 | hci_debugfs_create_common(hdev); |
945 | ||
71c3b60e | 946 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 947 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 948 | |
162a3bac | 949 | if (lmp_le_capable(hdev)) |
60c5f5fb | 950 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 951 | |
baf27f6e | 952 | return 0; |
2177bab5 JH |
953 | } |
954 | ||
0ebca7d6 MH |
955 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
956 | { | |
957 | struct hci_dev *hdev = req->hdev; | |
958 | ||
959 | BT_DBG("%s %ld", hdev->name, opt); | |
960 | ||
961 | /* Reset */ | |
962 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
963 | hci_reset_req(req, 0); | |
964 | ||
965 | /* Read Local Version */ | |
966 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
967 | ||
968 | /* Read BD Address */ | |
969 | if (hdev->set_bdaddr) | |
970 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
971 | } | |
972 | ||
973 | static int __hci_unconf_init(struct hci_dev *hdev) | |
974 | { | |
975 | int err; | |
976 | ||
cc78b44b MH |
977 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
978 | return 0; | |
979 | ||
0ebca7d6 MH |
980 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
981 | if (err < 0) | |
982 | return err; | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
42c6b129 | 987 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
988 | { |
989 | __u8 scan = opt; | |
990 | ||
42c6b129 | 991 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
992 | |
993 | /* Inquiry and Page scans */ | |
42c6b129 | 994 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
995 | } |
996 | ||
42c6b129 | 997 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
998 | { |
999 | __u8 auth = opt; | |
1000 | ||
42c6b129 | 1001 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1002 | |
1003 | /* Authentication */ | |
42c6b129 | 1004 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1005 | } |
1006 | ||
42c6b129 | 1007 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1008 | { |
1009 | __u8 encrypt = opt; | |
1010 | ||
42c6b129 | 1011 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1012 | |
e4e8e37c | 1013 | /* Encryption */ |
42c6b129 | 1014 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1015 | } |
1016 | ||
42c6b129 | 1017 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1018 | { |
1019 | __le16 policy = cpu_to_le16(opt); | |
1020 | ||
42c6b129 | 1021 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1022 | |
1023 | /* Default link policy */ | |
42c6b129 | 1024 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1025 | } |
1026 | ||
8e87d142 | 1027 | /* Get HCI device by index. |
1da177e4 LT |
1028 | * Device is held on return. */ |
1029 | struct hci_dev *hci_dev_get(int index) | |
1030 | { | |
8035ded4 | 1031 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1032 | |
1033 | BT_DBG("%d", index); | |
1034 | ||
1035 | if (index < 0) | |
1036 | return NULL; | |
1037 | ||
1038 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1039 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1040 | if (d->id == index) { |
1041 | hdev = hci_dev_hold(d); | |
1042 | break; | |
1043 | } | |
1044 | } | |
1045 | read_unlock(&hci_dev_list_lock); | |
1046 | return hdev; | |
1047 | } | |
1da177e4 LT |
1048 | |
1049 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1050 | |
30dc78e1 JH |
1051 | bool hci_discovery_active(struct hci_dev *hdev) |
1052 | { | |
1053 | struct discovery_state *discov = &hdev->discovery; | |
1054 | ||
6fbe195d | 1055 | switch (discov->state) { |
343f935b | 1056 | case DISCOVERY_FINDING: |
6fbe195d | 1057 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1058 | return true; |
1059 | ||
6fbe195d AG |
1060 | default: |
1061 | return false; | |
1062 | } | |
30dc78e1 JH |
1063 | } |
1064 | ||
ff9ef578 JH |
1065 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1066 | { | |
bb3e0a33 JH |
1067 | int old_state = hdev->discovery.state; |
1068 | ||
ff9ef578 JH |
1069 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1070 | ||
bb3e0a33 | 1071 | if (old_state == state) |
ff9ef578 JH |
1072 | return; |
1073 | ||
bb3e0a33 JH |
1074 | hdev->discovery.state = state; |
1075 | ||
ff9ef578 JH |
1076 | switch (state) { |
1077 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1078 | hci_update_background_scan(hdev); |
1079 | ||
bb3e0a33 | 1080 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1081 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1082 | break; |
1083 | case DISCOVERY_STARTING: | |
1084 | break; | |
343f935b | 1085 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1086 | mgmt_discovering(hdev, 1); |
1087 | break; | |
30dc78e1 JH |
1088 | case DISCOVERY_RESOLVING: |
1089 | break; | |
ff9ef578 JH |
1090 | case DISCOVERY_STOPPING: |
1091 | break; | |
1092 | } | |
ff9ef578 JH |
1093 | } |
1094 | ||
1f9b9a5d | 1095 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1096 | { |
30883512 | 1097 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1098 | struct inquiry_entry *p, *n; |
1da177e4 | 1099 | |
561aafbc JH |
1100 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1101 | list_del(&p->all); | |
b57c1a56 | 1102 | kfree(p); |
1da177e4 | 1103 | } |
561aafbc JH |
1104 | |
1105 | INIT_LIST_HEAD(&cache->unknown); | |
1106 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1107 | } |
1108 | ||
a8c5fb1a GP |
1109 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1110 | bdaddr_t *bdaddr) | |
1da177e4 | 1111 | { |
30883512 | 1112 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1113 | struct inquiry_entry *e; |
1114 | ||
6ed93dc6 | 1115 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1116 | |
561aafbc JH |
1117 | list_for_each_entry(e, &cache->all, all) { |
1118 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1119 | return e; | |
1120 | } | |
1121 | ||
1122 | return NULL; | |
1123 | } | |
1124 | ||
1125 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1126 | bdaddr_t *bdaddr) |
561aafbc | 1127 | { |
30883512 | 1128 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1129 | struct inquiry_entry *e; |
1130 | ||
6ed93dc6 | 1131 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1132 | |
1133 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1134 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1135 | return e; |
1136 | } | |
1137 | ||
1138 | return NULL; | |
1da177e4 LT |
1139 | } |
1140 | ||
30dc78e1 | 1141 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1142 | bdaddr_t *bdaddr, |
1143 | int state) | |
30dc78e1 JH |
1144 | { |
1145 | struct discovery_state *cache = &hdev->discovery; | |
1146 | struct inquiry_entry *e; | |
1147 | ||
6ed93dc6 | 1148 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1149 | |
1150 | list_for_each_entry(e, &cache->resolve, list) { | |
1151 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1152 | return e; | |
1153 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1154 | return e; | |
1155 | } | |
1156 | ||
1157 | return NULL; | |
1158 | } | |
1159 | ||
a3d4e20a | 1160 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1161 | struct inquiry_entry *ie) |
a3d4e20a JH |
1162 | { |
1163 | struct discovery_state *cache = &hdev->discovery; | |
1164 | struct list_head *pos = &cache->resolve; | |
1165 | struct inquiry_entry *p; | |
1166 | ||
1167 | list_del(&ie->list); | |
1168 | ||
1169 | list_for_each_entry(p, &cache->resolve, list) { | |
1170 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1171 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1172 | break; |
1173 | pos = &p->list; | |
1174 | } | |
1175 | ||
1176 | list_add(&ie->list, pos); | |
1177 | } | |
1178 | ||
af58925c MH |
1179 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1180 | bool name_known) | |
1da177e4 | 1181 | { |
30883512 | 1182 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1183 | struct inquiry_entry *ie; |
af58925c | 1184 | u32 flags = 0; |
1da177e4 | 1185 | |
6ed93dc6 | 1186 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1187 | |
6928a924 | 1188 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1189 | |
af58925c MH |
1190 | if (!data->ssp_mode) |
1191 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1192 | |
70f23020 | 1193 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1194 | if (ie) { |
af58925c MH |
1195 | if (!ie->data.ssp_mode) |
1196 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1197 | |
a3d4e20a | 1198 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1199 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1200 | ie->data.rssi = data->rssi; |
1201 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1202 | } | |
1203 | ||
561aafbc | 1204 | goto update; |
a3d4e20a | 1205 | } |
561aafbc JH |
1206 | |
1207 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1208 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1209 | if (!ie) { |
1210 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1211 | goto done; | |
1212 | } | |
561aafbc JH |
1213 | |
1214 | list_add(&ie->all, &cache->all); | |
1215 | ||
1216 | if (name_known) { | |
1217 | ie->name_state = NAME_KNOWN; | |
1218 | } else { | |
1219 | ie->name_state = NAME_NOT_KNOWN; | |
1220 | list_add(&ie->list, &cache->unknown); | |
1221 | } | |
70f23020 | 1222 | |
561aafbc JH |
1223 | update: |
1224 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1225 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1226 | ie->name_state = NAME_KNOWN; |
1227 | list_del(&ie->list); | |
1da177e4 LT |
1228 | } |
1229 | ||
70f23020 AE |
1230 | memcpy(&ie->data, data, sizeof(*data)); |
1231 | ie->timestamp = jiffies; | |
1da177e4 | 1232 | cache->timestamp = jiffies; |
3175405b JH |
1233 | |
1234 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1235 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1236 | |
af58925c MH |
1237 | done: |
1238 | return flags; | |
1da177e4 LT |
1239 | } |
1240 | ||
1241 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1242 | { | |
30883512 | 1243 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1244 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1245 | struct inquiry_entry *e; | |
1246 | int copied = 0; | |
1247 | ||
561aafbc | 1248 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1249 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1250 | |
1251 | if (copied >= num) | |
1252 | break; | |
1253 | ||
1da177e4 LT |
1254 | bacpy(&info->bdaddr, &data->bdaddr); |
1255 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1256 | info->pscan_period_mode = data->pscan_period_mode; | |
1257 | info->pscan_mode = data->pscan_mode; | |
1258 | memcpy(info->dev_class, data->dev_class, 3); | |
1259 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1260 | |
1da177e4 | 1261 | info++; |
b57c1a56 | 1262 | copied++; |
1da177e4 LT |
1263 | } |
1264 | ||
1265 | BT_DBG("cache %p, copied %d", cache, copied); | |
1266 | return copied; | |
1267 | } | |
1268 | ||
42c6b129 | 1269 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1270 | { |
1271 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1272 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1273 | struct hci_cp_inquiry cp; |
1274 | ||
1275 | BT_DBG("%s", hdev->name); | |
1276 | ||
1277 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1278 | return; | |
1279 | ||
1280 | /* Start Inquiry */ | |
1281 | memcpy(&cp.lap, &ir->lap, 3); | |
1282 | cp.length = ir->length; | |
1283 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1284 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1285 | } |
1286 | ||
1287 | int hci_inquiry(void __user *arg) | |
1288 | { | |
1289 | __u8 __user *ptr = arg; | |
1290 | struct hci_inquiry_req ir; | |
1291 | struct hci_dev *hdev; | |
1292 | int err = 0, do_inquiry = 0, max_rsp; | |
1293 | long timeo; | |
1294 | __u8 *buf; | |
1295 | ||
1296 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1297 | return -EFAULT; | |
1298 | ||
5a08ecce AE |
1299 | hdev = hci_dev_get(ir.dev_id); |
1300 | if (!hdev) | |
1da177e4 LT |
1301 | return -ENODEV; |
1302 | ||
d7a5a11d | 1303 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1304 | err = -EBUSY; |
1305 | goto done; | |
1306 | } | |
1307 | ||
d7a5a11d | 1308 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1309 | err = -EOPNOTSUPP; |
1310 | goto done; | |
1311 | } | |
1312 | ||
5b69bef5 MH |
1313 | if (hdev->dev_type != HCI_BREDR) { |
1314 | err = -EOPNOTSUPP; | |
1315 | goto done; | |
1316 | } | |
1317 | ||
d7a5a11d | 1318 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1319 | err = -EOPNOTSUPP; |
1320 | goto done; | |
1321 | } | |
1322 | ||
09fd0de5 | 1323 | hci_dev_lock(hdev); |
8e87d142 | 1324 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1325 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1326 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1327 | do_inquiry = 1; |
1328 | } | |
09fd0de5 | 1329 | hci_dev_unlock(hdev); |
1da177e4 | 1330 | |
04837f64 | 1331 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1332 | |
1333 | if (do_inquiry) { | |
01178cd4 JH |
1334 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1335 | timeo); | |
70f23020 AE |
1336 | if (err < 0) |
1337 | goto done; | |
3e13fa1e AG |
1338 | |
1339 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1340 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1341 | */ | |
74316201 | 1342 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1343 | TASK_INTERRUPTIBLE)) |
1344 | return -EINTR; | |
70f23020 | 1345 | } |
1da177e4 | 1346 | |
8fc9ced3 GP |
1347 | /* for unlimited number of responses we will use buffer with |
1348 | * 255 entries | |
1349 | */ | |
1da177e4 LT |
1350 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1351 | ||
1352 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1353 | * copy it to the user space. | |
1354 | */ | |
01df8c31 | 1355 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1356 | if (!buf) { |
1da177e4 LT |
1357 | err = -ENOMEM; |
1358 | goto done; | |
1359 | } | |
1360 | ||
09fd0de5 | 1361 | hci_dev_lock(hdev); |
1da177e4 | 1362 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1363 | hci_dev_unlock(hdev); |
1da177e4 LT |
1364 | |
1365 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1366 | ||
1367 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1368 | ptr += sizeof(ir); | |
1369 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1370 | ir.num_rsp)) |
1da177e4 | 1371 | err = -EFAULT; |
8e87d142 | 1372 | } else |
1da177e4 LT |
1373 | err = -EFAULT; |
1374 | ||
1375 | kfree(buf); | |
1376 | ||
1377 | done: | |
1378 | hci_dev_put(hdev); | |
1379 | return err; | |
1380 | } | |
1381 | ||
cbed0ca1 | 1382 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1383 | { |
1da177e4 LT |
1384 | int ret = 0; |
1385 | ||
1da177e4 LT |
1386 | BT_DBG("%s %p", hdev->name, hdev); |
1387 | ||
1388 | hci_req_lock(hdev); | |
1389 | ||
d7a5a11d | 1390 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1391 | ret = -ENODEV; |
1392 | goto done; | |
1393 | } | |
1394 | ||
d7a5a11d MH |
1395 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1396 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1397 | /* Check for rfkill but allow the HCI setup stage to |
1398 | * proceed (which in itself doesn't cause any RF activity). | |
1399 | */ | |
d7a5a11d | 1400 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1401 | ret = -ERFKILL; |
1402 | goto done; | |
1403 | } | |
1404 | ||
1405 | /* Check for valid public address or a configured static | |
1406 | * random adddress, but let the HCI setup proceed to | |
1407 | * be able to determine if there is a public address | |
1408 | * or not. | |
1409 | * | |
c6beca0e MH |
1410 | * In case of user channel usage, it is not important |
1411 | * if a public address or static random address is | |
1412 | * available. | |
1413 | * | |
a5c8f270 MH |
1414 | * This check is only valid for BR/EDR controllers |
1415 | * since AMP controllers do not have an address. | |
1416 | */ | |
d7a5a11d | 1417 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1418 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1419 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1420 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1421 | ret = -EADDRNOTAVAIL; | |
1422 | goto done; | |
1423 | } | |
611b30f7 MH |
1424 | } |
1425 | ||
1da177e4 LT |
1426 | if (test_bit(HCI_UP, &hdev->flags)) { |
1427 | ret = -EALREADY; | |
1428 | goto done; | |
1429 | } | |
1430 | ||
1da177e4 LT |
1431 | if (hdev->open(hdev)) { |
1432 | ret = -EIO; | |
1433 | goto done; | |
1434 | } | |
1435 | ||
f41c70c4 MH |
1436 | atomic_set(&hdev->cmd_cnt, 1); |
1437 | set_bit(HCI_INIT, &hdev->flags); | |
1438 | ||
d7a5a11d | 1439 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
af202f84 MH |
1440 | if (hdev->setup) |
1441 | ret = hdev->setup(hdev); | |
f41c70c4 | 1442 | |
af202f84 MH |
1443 | /* The transport driver can set these quirks before |
1444 | * creating the HCI device or in its setup callback. | |
1445 | * | |
1446 | * In case any of them is set, the controller has to | |
1447 | * start up as unconfigured. | |
1448 | */ | |
eb1904f4 MH |
1449 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1450 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1451 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1452 | |
0ebca7d6 MH |
1453 | /* For an unconfigured controller it is required to |
1454 | * read at least the version information provided by | |
1455 | * the Read Local Version Information command. | |
1456 | * | |
1457 | * If the set_bdaddr driver callback is provided, then | |
1458 | * also the original Bluetooth public device address | |
1459 | * will be read using the Read BD Address command. | |
1460 | */ | |
d7a5a11d | 1461 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1462 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1463 | } |
1464 | ||
d7a5a11d | 1465 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1466 | /* If public address change is configured, ensure that |
1467 | * the address gets programmed. If the driver does not | |
1468 | * support changing the public address, fail the power | |
1469 | * on procedure. | |
1470 | */ | |
1471 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1472 | hdev->set_bdaddr) | |
24c457e2 MH |
1473 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1474 | else | |
1475 | ret = -EADDRNOTAVAIL; | |
1476 | } | |
1477 | ||
f41c70c4 | 1478 | if (!ret) { |
d7a5a11d MH |
1479 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1480 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) | |
f41c70c4 | 1481 | ret = __hci_init(hdev); |
1da177e4 LT |
1482 | } |
1483 | ||
f41c70c4 MH |
1484 | clear_bit(HCI_INIT, &hdev->flags); |
1485 | ||
1da177e4 LT |
1486 | if (!ret) { |
1487 | hci_dev_hold(hdev); | |
a1536da2 | 1488 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 LT |
1489 | set_bit(HCI_UP, &hdev->flags); |
1490 | hci_notify(hdev, HCI_DEV_UP); | |
d7a5a11d MH |
1491 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1492 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1493 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1494 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1514b892 | 1495 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1496 | hci_dev_lock(hdev); |
744cf19e | 1497 | mgmt_powered(hdev, 1); |
09fd0de5 | 1498 | hci_dev_unlock(hdev); |
56e5cb86 | 1499 | } |
8e87d142 | 1500 | } else { |
1da177e4 | 1501 | /* Init failed, cleanup */ |
3eff45ea | 1502 | flush_work(&hdev->tx_work); |
c347b765 | 1503 | flush_work(&hdev->cmd_work); |
b78752cc | 1504 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1505 | |
1506 | skb_queue_purge(&hdev->cmd_q); | |
1507 | skb_queue_purge(&hdev->rx_q); | |
1508 | ||
1509 | if (hdev->flush) | |
1510 | hdev->flush(hdev); | |
1511 | ||
1512 | if (hdev->sent_cmd) { | |
1513 | kfree_skb(hdev->sent_cmd); | |
1514 | hdev->sent_cmd = NULL; | |
1515 | } | |
1516 | ||
1517 | hdev->close(hdev); | |
fee746b0 | 1518 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1519 | } |
1520 | ||
1521 | done: | |
1522 | hci_req_unlock(hdev); | |
1da177e4 LT |
1523 | return ret; |
1524 | } | |
1525 | ||
cbed0ca1 JH |
1526 | /* ---- HCI ioctl helpers ---- */ |
1527 | ||
1528 | int hci_dev_open(__u16 dev) | |
1529 | { | |
1530 | struct hci_dev *hdev; | |
1531 | int err; | |
1532 | ||
1533 | hdev = hci_dev_get(dev); | |
1534 | if (!hdev) | |
1535 | return -ENODEV; | |
1536 | ||
4a964404 | 1537 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1538 | * up as user channel. Trying to bring them up as normal devices |
1539 | * will result into a failure. Only user channel operation is | |
1540 | * possible. | |
1541 | * | |
1542 | * When this function is called for a user channel, the flag | |
1543 | * HCI_USER_CHANNEL will be set first before attempting to | |
1544 | * open the device. | |
1545 | */ | |
d7a5a11d MH |
1546 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1547 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1548 | err = -EOPNOTSUPP; |
1549 | goto done; | |
1550 | } | |
1551 | ||
e1d08f40 JH |
1552 | /* We need to ensure that no other power on/off work is pending |
1553 | * before proceeding to call hci_dev_do_open. This is | |
1554 | * particularly important if the setup procedure has not yet | |
1555 | * completed. | |
1556 | */ | |
1557 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1558 | cancel_delayed_work(&hdev->power_off); | |
1559 | ||
a5c8f270 MH |
1560 | /* After this call it is guaranteed that the setup procedure |
1561 | * has finished. This means that error conditions like RFKILL | |
1562 | * or no valid public or static random address apply. | |
1563 | */ | |
e1d08f40 JH |
1564 | flush_workqueue(hdev->req_workqueue); |
1565 | ||
12aa4f0a | 1566 | /* For controllers not using the management interface and that |
b6ae8457 | 1567 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1568 | * so that pairing works for them. Once the management interface |
1569 | * is in use this bit will be cleared again and userspace has | |
1570 | * to explicitly enable it. | |
1571 | */ | |
d7a5a11d MH |
1572 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1573 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1574 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1575 | |
cbed0ca1 JH |
1576 | err = hci_dev_do_open(hdev); |
1577 | ||
fee746b0 | 1578 | done: |
cbed0ca1 | 1579 | hci_dev_put(hdev); |
cbed0ca1 JH |
1580 | return err; |
1581 | } | |
1582 | ||
d7347f3c JH |
1583 | /* This function requires the caller holds hdev->lock */ |
1584 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1585 | { | |
1586 | struct hci_conn_params *p; | |
1587 | ||
f161dd41 JH |
1588 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1589 | if (p->conn) { | |
1590 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1591 | hci_conn_put(p->conn); |
f161dd41 JH |
1592 | p->conn = NULL; |
1593 | } | |
d7347f3c | 1594 | list_del_init(&p->action); |
f161dd41 | 1595 | } |
d7347f3c JH |
1596 | |
1597 | BT_DBG("All LE pending actions cleared"); | |
1598 | } | |
1599 | ||
1da177e4 LT |
1600 | static int hci_dev_do_close(struct hci_dev *hdev) |
1601 | { | |
1602 | BT_DBG("%s %p", hdev->name, hdev); | |
1603 | ||
d7a5a11d | 1604 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
a44fecbd THJA |
1605 | /* Execute vendor specific shutdown routine */ |
1606 | if (hdev->shutdown) | |
1607 | hdev->shutdown(hdev); | |
1608 | } | |
1609 | ||
78c04c0b VCG |
1610 | cancel_delayed_work(&hdev->power_off); |
1611 | ||
1da177e4 LT |
1612 | hci_req_cancel(hdev, ENODEV); |
1613 | hci_req_lock(hdev); | |
1614 | ||
1615 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1616 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1617 | hci_req_unlock(hdev); |
1618 | return 0; | |
1619 | } | |
1620 | ||
3eff45ea GP |
1621 | /* Flush RX and TX works */ |
1622 | flush_work(&hdev->tx_work); | |
b78752cc | 1623 | flush_work(&hdev->rx_work); |
1da177e4 | 1624 | |
16ab91ab | 1625 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1626 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1627 | hdev->discov_timeout = 0; |
a358dc11 MH |
1628 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1629 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1630 | } |
1631 | ||
a8b2d5c2 | 1632 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1633 | cancel_delayed_work(&hdev->service_cache); |
1634 | ||
7ba8b4be | 1635 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2d28cfe7 | 1636 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
4518bb0f | 1637 | |
d7a5a11d | 1638 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1639 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1640 | |
76727c02 JH |
1641 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1642 | * ensuring the workqueue is empty up front. | |
1643 | */ | |
1644 | drain_workqueue(hdev->workqueue); | |
1645 | ||
09fd0de5 | 1646 | hci_dev_lock(hdev); |
1aeb9c65 | 1647 | |
8f502f84 JH |
1648 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1649 | ||
1aeb9c65 JH |
1650 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
1651 | if (hdev->dev_type == HCI_BREDR) | |
1652 | mgmt_powered(hdev, 0); | |
1653 | } | |
1654 | ||
1f9b9a5d | 1655 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1656 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1657 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1658 | hci_dev_unlock(hdev); |
1da177e4 | 1659 | |
64dae967 MH |
1660 | smp_unregister(hdev); |
1661 | ||
1da177e4 LT |
1662 | hci_notify(hdev, HCI_DEV_DOWN); |
1663 | ||
1664 | if (hdev->flush) | |
1665 | hdev->flush(hdev); | |
1666 | ||
1667 | /* Reset device */ | |
1668 | skb_queue_purge(&hdev->cmd_q); | |
1669 | atomic_set(&hdev->cmd_cnt, 1); | |
d7a5a11d MH |
1670 | if (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && |
1671 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
a6c511c6 | 1672 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1673 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1674 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1675 | clear_bit(HCI_INIT, &hdev->flags); |
1676 | } | |
1677 | ||
c347b765 GP |
1678 | /* flush cmd work */ |
1679 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1680 | |
1681 | /* Drop queues */ | |
1682 | skb_queue_purge(&hdev->rx_q); | |
1683 | skb_queue_purge(&hdev->cmd_q); | |
1684 | skb_queue_purge(&hdev->raw_q); | |
1685 | ||
1686 | /* Drop last sent command */ | |
1687 | if (hdev->sent_cmd) { | |
65cc2b49 | 1688 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1689 | kfree_skb(hdev->sent_cmd); |
1690 | hdev->sent_cmd = NULL; | |
1691 | } | |
1692 | ||
b6ddb638 JH |
1693 | kfree_skb(hdev->recv_evt); |
1694 | hdev->recv_evt = NULL; | |
1695 | ||
1da177e4 LT |
1696 | /* After this point our queues are empty |
1697 | * and no tasks are scheduled. */ | |
1698 | hdev->close(hdev); | |
1699 | ||
35b973c9 | 1700 | /* Clear flags */ |
fee746b0 | 1701 | hdev->flags &= BIT(HCI_RAW); |
35b973c9 JH |
1702 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; |
1703 | ||
ced5c338 | 1704 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1705 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1706 | |
e59fda8d | 1707 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1708 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1709 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1710 | |
1da177e4 LT |
1711 | hci_req_unlock(hdev); |
1712 | ||
1713 | hci_dev_put(hdev); | |
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | int hci_dev_close(__u16 dev) | |
1718 | { | |
1719 | struct hci_dev *hdev; | |
1720 | int err; | |
1721 | ||
70f23020 AE |
1722 | hdev = hci_dev_get(dev); |
1723 | if (!hdev) | |
1da177e4 | 1724 | return -ENODEV; |
8ee56540 | 1725 | |
d7a5a11d | 1726 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1727 | err = -EBUSY; |
1728 | goto done; | |
1729 | } | |
1730 | ||
8ee56540 MH |
1731 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
1732 | cancel_delayed_work(&hdev->power_off); | |
1733 | ||
1da177e4 | 1734 | err = hci_dev_do_close(hdev); |
8ee56540 | 1735 | |
0736cfa8 | 1736 | done: |
1da177e4 LT |
1737 | hci_dev_put(hdev); |
1738 | return err; | |
1739 | } | |
1740 | ||
5c912495 | 1741 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1742 | { |
5c912495 | 1743 | int ret; |
1da177e4 | 1744 | |
5c912495 | 1745 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1746 | |
1747 | hci_req_lock(hdev); | |
1da177e4 | 1748 | |
1da177e4 LT |
1749 | /* Drop queues */ |
1750 | skb_queue_purge(&hdev->rx_q); | |
1751 | skb_queue_purge(&hdev->cmd_q); | |
1752 | ||
76727c02 JH |
1753 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1754 | * ensuring the workqueue is empty up front. | |
1755 | */ | |
1756 | drain_workqueue(hdev->workqueue); | |
1757 | ||
09fd0de5 | 1758 | hci_dev_lock(hdev); |
1f9b9a5d | 1759 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1760 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1761 | hci_dev_unlock(hdev); |
1da177e4 LT |
1762 | |
1763 | if (hdev->flush) | |
1764 | hdev->flush(hdev); | |
1765 | ||
8e87d142 | 1766 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1767 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1768 | |
fee746b0 | 1769 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1770 | |
1da177e4 | 1771 | hci_req_unlock(hdev); |
1da177e4 LT |
1772 | return ret; |
1773 | } | |
1774 | ||
5c912495 MH |
1775 | int hci_dev_reset(__u16 dev) |
1776 | { | |
1777 | struct hci_dev *hdev; | |
1778 | int err; | |
1779 | ||
1780 | hdev = hci_dev_get(dev); | |
1781 | if (!hdev) | |
1782 | return -ENODEV; | |
1783 | ||
1784 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1785 | err = -ENETDOWN; | |
1786 | goto done; | |
1787 | } | |
1788 | ||
d7a5a11d | 1789 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1790 | err = -EBUSY; |
1791 | goto done; | |
1792 | } | |
1793 | ||
d7a5a11d | 1794 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1795 | err = -EOPNOTSUPP; |
1796 | goto done; | |
1797 | } | |
1798 | ||
1799 | err = hci_dev_do_reset(hdev); | |
1800 | ||
1801 | done: | |
1802 | hci_dev_put(hdev); | |
1803 | return err; | |
1804 | } | |
1805 | ||
1da177e4 LT |
1806 | int hci_dev_reset_stat(__u16 dev) |
1807 | { | |
1808 | struct hci_dev *hdev; | |
1809 | int ret = 0; | |
1810 | ||
70f23020 AE |
1811 | hdev = hci_dev_get(dev); |
1812 | if (!hdev) | |
1da177e4 LT |
1813 | return -ENODEV; |
1814 | ||
d7a5a11d | 1815 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1816 | ret = -EBUSY; |
1817 | goto done; | |
1818 | } | |
1819 | ||
d7a5a11d | 1820 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1821 | ret = -EOPNOTSUPP; |
1822 | goto done; | |
1823 | } | |
1824 | ||
1da177e4 LT |
1825 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1826 | ||
0736cfa8 | 1827 | done: |
1da177e4 | 1828 | hci_dev_put(hdev); |
1da177e4 LT |
1829 | return ret; |
1830 | } | |
1831 | ||
123abc08 JH |
1832 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1833 | { | |
bc6d2d04 | 1834 | bool conn_changed, discov_changed; |
123abc08 JH |
1835 | |
1836 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1837 | ||
1838 | if ((scan & SCAN_PAGE)) | |
1839 | conn_changed = !test_and_set_bit(HCI_CONNECTABLE, | |
1840 | &hdev->dev_flags); | |
1841 | else | |
1842 | conn_changed = test_and_clear_bit(HCI_CONNECTABLE, | |
1843 | &hdev->dev_flags); | |
1844 | ||
bc6d2d04 JH |
1845 | if ((scan & SCAN_INQUIRY)) { |
1846 | discov_changed = !test_and_set_bit(HCI_DISCOVERABLE, | |
1847 | &hdev->dev_flags); | |
1848 | } else { | |
a358dc11 | 1849 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
bc6d2d04 JH |
1850 | discov_changed = test_and_clear_bit(HCI_DISCOVERABLE, |
1851 | &hdev->dev_flags); | |
1852 | } | |
1853 | ||
d7a5a11d | 1854 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1855 | return; |
1856 | ||
bc6d2d04 JH |
1857 | if (conn_changed || discov_changed) { |
1858 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1859 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1860 | |
d7a5a11d | 1861 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
bc6d2d04 JH |
1862 | mgmt_update_adv_data(hdev); |
1863 | ||
123abc08 | 1864 | mgmt_new_settings(hdev); |
bc6d2d04 | 1865 | } |
123abc08 JH |
1866 | } |
1867 | ||
1da177e4 LT |
1868 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1869 | { | |
1870 | struct hci_dev *hdev; | |
1871 | struct hci_dev_req dr; | |
1872 | int err = 0; | |
1873 | ||
1874 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1875 | return -EFAULT; | |
1876 | ||
70f23020 AE |
1877 | hdev = hci_dev_get(dr.dev_id); |
1878 | if (!hdev) | |
1da177e4 LT |
1879 | return -ENODEV; |
1880 | ||
d7a5a11d | 1881 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1882 | err = -EBUSY; |
1883 | goto done; | |
1884 | } | |
1885 | ||
d7a5a11d | 1886 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1887 | err = -EOPNOTSUPP; |
1888 | goto done; | |
1889 | } | |
1890 | ||
5b69bef5 MH |
1891 | if (hdev->dev_type != HCI_BREDR) { |
1892 | err = -EOPNOTSUPP; | |
1893 | goto done; | |
1894 | } | |
1895 | ||
d7a5a11d | 1896 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1897 | err = -EOPNOTSUPP; |
1898 | goto done; | |
1899 | } | |
1900 | ||
1da177e4 LT |
1901 | switch (cmd) { |
1902 | case HCISETAUTH: | |
01178cd4 JH |
1903 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1904 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1905 | break; |
1906 | ||
1907 | case HCISETENCRYPT: | |
1908 | if (!lmp_encrypt_capable(hdev)) { | |
1909 | err = -EOPNOTSUPP; | |
1910 | break; | |
1911 | } | |
1912 | ||
1913 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1914 | /* Auth must be enabled first */ | |
01178cd4 JH |
1915 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1916 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1917 | if (err) |
1918 | break; | |
1919 | } | |
1920 | ||
01178cd4 JH |
1921 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1922 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1923 | break; |
1924 | ||
1925 | case HCISETSCAN: | |
01178cd4 JH |
1926 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1927 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1928 | |
bc6d2d04 JH |
1929 | /* Ensure that the connectable and discoverable states |
1930 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1931 | */ |
123abc08 JH |
1932 | if (!err) |
1933 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1934 | break; |
1935 | ||
1da177e4 | 1936 | case HCISETLINKPOL: |
01178cd4 JH |
1937 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1938 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1939 | break; |
1940 | ||
1941 | case HCISETLINKMODE: | |
e4e8e37c MH |
1942 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1943 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1944 | break; | |
1945 | ||
1946 | case HCISETPTYPE: | |
1947 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1948 | break; |
1949 | ||
1950 | case HCISETACLMTU: | |
e4e8e37c MH |
1951 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1952 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1953 | break; |
1954 | ||
1955 | case HCISETSCOMTU: | |
e4e8e37c MH |
1956 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1957 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1958 | break; |
1959 | ||
1960 | default: | |
1961 | err = -EINVAL; | |
1962 | break; | |
1963 | } | |
e4e8e37c | 1964 | |
0736cfa8 | 1965 | done: |
1da177e4 LT |
1966 | hci_dev_put(hdev); |
1967 | return err; | |
1968 | } | |
1969 | ||
1970 | int hci_get_dev_list(void __user *arg) | |
1971 | { | |
8035ded4 | 1972 | struct hci_dev *hdev; |
1da177e4 LT |
1973 | struct hci_dev_list_req *dl; |
1974 | struct hci_dev_req *dr; | |
1da177e4 LT |
1975 | int n = 0, size, err; |
1976 | __u16 dev_num; | |
1977 | ||
1978 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1979 | return -EFAULT; | |
1980 | ||
1981 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1982 | return -EINVAL; | |
1983 | ||
1984 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1985 | ||
70f23020 AE |
1986 | dl = kzalloc(size, GFP_KERNEL); |
1987 | if (!dl) | |
1da177e4 LT |
1988 | return -ENOMEM; |
1989 | ||
1990 | dr = dl->dev_req; | |
1991 | ||
f20d09d5 | 1992 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1993 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1994 | unsigned long flags = hdev->flags; |
c542a06c | 1995 | |
2e84d8db MH |
1996 | /* When the auto-off is configured it means the transport |
1997 | * is running, but in that case still indicate that the | |
1998 | * device is actually down. | |
1999 | */ | |
d7a5a11d | 2000 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 2001 | flags &= ~BIT(HCI_UP); |
c542a06c | 2002 | |
1da177e4 | 2003 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2004 | (dr + n)->dev_opt = flags; |
c542a06c | 2005 | |
1da177e4 LT |
2006 | if (++n >= dev_num) |
2007 | break; | |
2008 | } | |
f20d09d5 | 2009 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2010 | |
2011 | dl->dev_num = n; | |
2012 | size = sizeof(*dl) + n * sizeof(*dr); | |
2013 | ||
2014 | err = copy_to_user(arg, dl, size); | |
2015 | kfree(dl); | |
2016 | ||
2017 | return err ? -EFAULT : 0; | |
2018 | } | |
2019 | ||
2020 | int hci_get_dev_info(void __user *arg) | |
2021 | { | |
2022 | struct hci_dev *hdev; | |
2023 | struct hci_dev_info di; | |
2e84d8db | 2024 | unsigned long flags; |
1da177e4 LT |
2025 | int err = 0; |
2026 | ||
2027 | if (copy_from_user(&di, arg, sizeof(di))) | |
2028 | return -EFAULT; | |
2029 | ||
70f23020 AE |
2030 | hdev = hci_dev_get(di.dev_id); |
2031 | if (!hdev) | |
1da177e4 LT |
2032 | return -ENODEV; |
2033 | ||
2e84d8db MH |
2034 | /* When the auto-off is configured it means the transport |
2035 | * is running, but in that case still indicate that the | |
2036 | * device is actually down. | |
2037 | */ | |
d7a5a11d | 2038 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
2039 | flags = hdev->flags & ~BIT(HCI_UP); |
2040 | else | |
2041 | flags = hdev->flags; | |
c542a06c | 2042 | |
1da177e4 LT |
2043 | strcpy(di.name, hdev->name); |
2044 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2045 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2046 | di.flags = flags; |
1da177e4 | 2047 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2048 | if (lmp_bredr_capable(hdev)) { |
2049 | di.acl_mtu = hdev->acl_mtu; | |
2050 | di.acl_pkts = hdev->acl_pkts; | |
2051 | di.sco_mtu = hdev->sco_mtu; | |
2052 | di.sco_pkts = hdev->sco_pkts; | |
2053 | } else { | |
2054 | di.acl_mtu = hdev->le_mtu; | |
2055 | di.acl_pkts = hdev->le_pkts; | |
2056 | di.sco_mtu = 0; | |
2057 | di.sco_pkts = 0; | |
2058 | } | |
1da177e4 LT |
2059 | di.link_policy = hdev->link_policy; |
2060 | di.link_mode = hdev->link_mode; | |
2061 | ||
2062 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2063 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2064 | ||
2065 | if (copy_to_user(arg, &di, sizeof(di))) | |
2066 | err = -EFAULT; | |
2067 | ||
2068 | hci_dev_put(hdev); | |
2069 | ||
2070 | return err; | |
2071 | } | |
2072 | ||
2073 | /* ---- Interface to HCI drivers ---- */ | |
2074 | ||
611b30f7 MH |
2075 | static int hci_rfkill_set_block(void *data, bool blocked) |
2076 | { | |
2077 | struct hci_dev *hdev = data; | |
2078 | ||
2079 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2080 | ||
d7a5a11d | 2081 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2082 | return -EBUSY; |
2083 | ||
5e130367 | 2084 | if (blocked) { |
a1536da2 | 2085 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2086 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2087 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2088 | hci_dev_do_close(hdev); |
5e130367 | 2089 | } else { |
a358dc11 | 2090 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2091 | } |
611b30f7 MH |
2092 | |
2093 | return 0; | |
2094 | } | |
2095 | ||
2096 | static const struct rfkill_ops hci_rfkill_ops = { | |
2097 | .set_block = hci_rfkill_set_block, | |
2098 | }; | |
2099 | ||
ab81cbf9 JH |
2100 | static void hci_power_on(struct work_struct *work) |
2101 | { | |
2102 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2103 | int err; |
ab81cbf9 JH |
2104 | |
2105 | BT_DBG("%s", hdev->name); | |
2106 | ||
cbed0ca1 | 2107 | err = hci_dev_do_open(hdev); |
96570ffc | 2108 | if (err < 0) { |
3ad67582 | 2109 | hci_dev_lock(hdev); |
96570ffc | 2110 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2111 | hci_dev_unlock(hdev); |
ab81cbf9 | 2112 | return; |
96570ffc | 2113 | } |
ab81cbf9 | 2114 | |
a5c8f270 MH |
2115 | /* During the HCI setup phase, a few error conditions are |
2116 | * ignored and they need to be checked now. If they are still | |
2117 | * valid, it is important to turn the device back off. | |
2118 | */ | |
d7a5a11d MH |
2119 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2120 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2121 | (hdev->dev_type == HCI_BREDR && |
2122 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2123 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2124 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2125 | hci_dev_do_close(hdev); |
d7a5a11d | 2126 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2127 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2128 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2129 | } |
ab81cbf9 | 2130 | |
fee746b0 | 2131 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) { |
4a964404 MH |
2132 | /* For unconfigured devices, set the HCI_RAW flag |
2133 | * so that userspace can easily identify them. | |
4a964404 | 2134 | */ |
d7a5a11d | 2135 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2136 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2137 | |
2138 | /* For fully configured devices, this will send | |
2139 | * the Index Added event. For unconfigured devices, | |
2140 | * it will send Unconfigued Index Added event. | |
2141 | * | |
2142 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2143 | * and no event will be send. | |
2144 | */ | |
2145 | mgmt_index_added(hdev); | |
d603b76b | 2146 | } else if (test_and_clear_bit(HCI_CONFIG, &hdev->dev_flags)) { |
5ea234d3 MH |
2147 | /* When the controller is now configured, then it |
2148 | * is important to clear the HCI_RAW flag. | |
2149 | */ | |
d7a5a11d | 2150 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2151 | clear_bit(HCI_RAW, &hdev->flags); |
2152 | ||
d603b76b MH |
2153 | /* Powering on the controller with HCI_CONFIG set only |
2154 | * happens with the transition from unconfigured to | |
2155 | * configured. This will send the Index Added event. | |
2156 | */ | |
744cf19e | 2157 | mgmt_index_added(hdev); |
fee746b0 | 2158 | } |
ab81cbf9 JH |
2159 | } |
2160 | ||
2161 | static void hci_power_off(struct work_struct *work) | |
2162 | { | |
3243553f | 2163 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2164 | power_off.work); |
ab81cbf9 JH |
2165 | |
2166 | BT_DBG("%s", hdev->name); | |
2167 | ||
8ee56540 | 2168 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2169 | } |
2170 | ||
c7741d16 MH |
2171 | static void hci_error_reset(struct work_struct *work) |
2172 | { | |
2173 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2174 | ||
2175 | BT_DBG("%s", hdev->name); | |
2176 | ||
2177 | if (hdev->hw_error) | |
2178 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2179 | else | |
2180 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2181 | hdev->hw_error_code); | |
2182 | ||
2183 | if (hci_dev_do_close(hdev)) | |
2184 | return; | |
2185 | ||
c7741d16 MH |
2186 | hci_dev_do_open(hdev); |
2187 | } | |
2188 | ||
16ab91ab JH |
2189 | static void hci_discov_off(struct work_struct *work) |
2190 | { | |
2191 | struct hci_dev *hdev; | |
16ab91ab JH |
2192 | |
2193 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2194 | ||
2195 | BT_DBG("%s", hdev->name); | |
2196 | ||
d1967ff8 | 2197 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2198 | } |
2199 | ||
35f7498a | 2200 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2201 | { |
4821002c | 2202 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2203 | |
4821002c JH |
2204 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2205 | list_del(&uuid->list); | |
2aeb9a1a JH |
2206 | kfree(uuid); |
2207 | } | |
2aeb9a1a JH |
2208 | } |
2209 | ||
35f7498a | 2210 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2211 | { |
0378b597 | 2212 | struct link_key *key; |
55ed8ca1 | 2213 | |
0378b597 JH |
2214 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2215 | list_del_rcu(&key->list); | |
2216 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2217 | } |
55ed8ca1 JH |
2218 | } |
2219 | ||
35f7498a | 2220 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2221 | { |
970d0f1b | 2222 | struct smp_ltk *k; |
b899efaf | 2223 | |
970d0f1b JH |
2224 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2225 | list_del_rcu(&k->list); | |
2226 | kfree_rcu(k, rcu); | |
b899efaf | 2227 | } |
b899efaf VCG |
2228 | } |
2229 | ||
970c4e46 JH |
2230 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2231 | { | |
adae20cb | 2232 | struct smp_irk *k; |
970c4e46 | 2233 | |
adae20cb JH |
2234 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2235 | list_del_rcu(&k->list); | |
2236 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2237 | } |
2238 | } | |
2239 | ||
55ed8ca1 JH |
2240 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2241 | { | |
8035ded4 | 2242 | struct link_key *k; |
55ed8ca1 | 2243 | |
0378b597 JH |
2244 | rcu_read_lock(); |
2245 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2246 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2247 | rcu_read_unlock(); | |
55ed8ca1 | 2248 | return k; |
0378b597 JH |
2249 | } |
2250 | } | |
2251 | rcu_read_unlock(); | |
55ed8ca1 JH |
2252 | |
2253 | return NULL; | |
2254 | } | |
2255 | ||
745c0ce3 | 2256 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2257 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2258 | { |
2259 | /* Legacy key */ | |
2260 | if (key_type < 0x03) | |
745c0ce3 | 2261 | return true; |
d25e28ab JH |
2262 | |
2263 | /* Debug keys are insecure so don't store them persistently */ | |
2264 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2265 | return false; |
d25e28ab JH |
2266 | |
2267 | /* Changed combination key and there's no previous one */ | |
2268 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2269 | return false; |
d25e28ab JH |
2270 | |
2271 | /* Security mode 3 case */ | |
2272 | if (!conn) | |
745c0ce3 | 2273 | return true; |
d25e28ab | 2274 | |
e3befab9 JH |
2275 | /* BR/EDR key derived using SC from an LE link */ |
2276 | if (conn->type == LE_LINK) | |
2277 | return true; | |
2278 | ||
d25e28ab JH |
2279 | /* Neither local nor remote side had no-bonding as requirement */ |
2280 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2281 | return true; |
d25e28ab JH |
2282 | |
2283 | /* Local side had dedicated bonding as requirement */ | |
2284 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2285 | return true; |
d25e28ab JH |
2286 | |
2287 | /* Remote side had dedicated bonding as requirement */ | |
2288 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2289 | return true; |
d25e28ab JH |
2290 | |
2291 | /* If none of the above criteria match, then don't store the key | |
2292 | * persistently */ | |
745c0ce3 | 2293 | return false; |
d25e28ab JH |
2294 | } |
2295 | ||
e804d25d | 2296 | static u8 ltk_role(u8 type) |
98a0b845 | 2297 | { |
e804d25d JH |
2298 | if (type == SMP_LTK) |
2299 | return HCI_ROLE_MASTER; | |
98a0b845 | 2300 | |
e804d25d | 2301 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2302 | } |
2303 | ||
f3a73d97 JH |
2304 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2305 | u8 addr_type, u8 role) | |
75d262c2 | 2306 | { |
c9839a11 | 2307 | struct smp_ltk *k; |
75d262c2 | 2308 | |
970d0f1b JH |
2309 | rcu_read_lock(); |
2310 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2311 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2312 | continue; | |
2313 | ||
923e2414 | 2314 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2315 | rcu_read_unlock(); |
75d262c2 | 2316 | return k; |
970d0f1b JH |
2317 | } |
2318 | } | |
2319 | rcu_read_unlock(); | |
75d262c2 VCG |
2320 | |
2321 | return NULL; | |
2322 | } | |
75d262c2 | 2323 | |
970c4e46 JH |
2324 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2325 | { | |
2326 | struct smp_irk *irk; | |
2327 | ||
adae20cb JH |
2328 | rcu_read_lock(); |
2329 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2330 | if (!bacmp(&irk->rpa, rpa)) { | |
2331 | rcu_read_unlock(); | |
970c4e46 | 2332 | return irk; |
adae20cb | 2333 | } |
970c4e46 JH |
2334 | } |
2335 | ||
adae20cb | 2336 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2337 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2338 | bacpy(&irk->rpa, rpa); |
adae20cb | 2339 | rcu_read_unlock(); |
970c4e46 JH |
2340 | return irk; |
2341 | } | |
2342 | } | |
adae20cb | 2343 | rcu_read_unlock(); |
970c4e46 JH |
2344 | |
2345 | return NULL; | |
2346 | } | |
2347 | ||
2348 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2349 | u8 addr_type) | |
2350 | { | |
2351 | struct smp_irk *irk; | |
2352 | ||
6cfc9988 JH |
2353 | /* Identity Address must be public or static random */ |
2354 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2355 | return NULL; | |
2356 | ||
adae20cb JH |
2357 | rcu_read_lock(); |
2358 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2359 | if (addr_type == irk->addr_type && |
adae20cb JH |
2360 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2361 | rcu_read_unlock(); | |
970c4e46 | 2362 | return irk; |
adae20cb | 2363 | } |
970c4e46 | 2364 | } |
adae20cb | 2365 | rcu_read_unlock(); |
970c4e46 JH |
2366 | |
2367 | return NULL; | |
2368 | } | |
2369 | ||
567fa2aa | 2370 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2371 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2372 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2373 | { |
2374 | struct link_key *key, *old_key; | |
745c0ce3 | 2375 | u8 old_key_type; |
55ed8ca1 JH |
2376 | |
2377 | old_key = hci_find_link_key(hdev, bdaddr); | |
2378 | if (old_key) { | |
2379 | old_key_type = old_key->type; | |
2380 | key = old_key; | |
2381 | } else { | |
12adcf3a | 2382 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2383 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2384 | if (!key) |
567fa2aa | 2385 | return NULL; |
0378b597 | 2386 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2387 | } |
2388 | ||
6ed93dc6 | 2389 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2390 | |
d25e28ab JH |
2391 | /* Some buggy controller combinations generate a changed |
2392 | * combination key for legacy pairing even when there's no | |
2393 | * previous key */ | |
2394 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2395 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2396 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2397 | if (conn) |
2398 | conn->key_type = type; | |
2399 | } | |
d25e28ab | 2400 | |
55ed8ca1 | 2401 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2402 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2403 | key->pin_len = pin_len; |
2404 | ||
b6020ba0 | 2405 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2406 | key->type = old_key_type; |
4748fed2 JH |
2407 | else |
2408 | key->type = type; | |
2409 | ||
7652ff6a JH |
2410 | if (persistent) |
2411 | *persistent = hci_persistent_key(hdev, conn, type, | |
2412 | old_key_type); | |
4df378a1 | 2413 | |
567fa2aa | 2414 | return key; |
55ed8ca1 JH |
2415 | } |
2416 | ||
ca9142b8 | 2417 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2418 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2419 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2420 | { |
c9839a11 | 2421 | struct smp_ltk *key, *old_key; |
e804d25d | 2422 | u8 role = ltk_role(type); |
75d262c2 | 2423 | |
f3a73d97 | 2424 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2425 | if (old_key) |
75d262c2 | 2426 | key = old_key; |
c9839a11 | 2427 | else { |
0a14ab41 | 2428 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2429 | if (!key) |
ca9142b8 | 2430 | return NULL; |
970d0f1b | 2431 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2432 | } |
2433 | ||
75d262c2 | 2434 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2435 | key->bdaddr_type = addr_type; |
2436 | memcpy(key->val, tk, sizeof(key->val)); | |
2437 | key->authenticated = authenticated; | |
2438 | key->ediv = ediv; | |
fe39c7b2 | 2439 | key->rand = rand; |
c9839a11 VCG |
2440 | key->enc_size = enc_size; |
2441 | key->type = type; | |
75d262c2 | 2442 | |
ca9142b8 | 2443 | return key; |
75d262c2 VCG |
2444 | } |
2445 | ||
ca9142b8 JH |
2446 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2447 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2448 | { |
2449 | struct smp_irk *irk; | |
2450 | ||
2451 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2452 | if (!irk) { | |
2453 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2454 | if (!irk) | |
ca9142b8 | 2455 | return NULL; |
970c4e46 JH |
2456 | |
2457 | bacpy(&irk->bdaddr, bdaddr); | |
2458 | irk->addr_type = addr_type; | |
2459 | ||
adae20cb | 2460 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2461 | } |
2462 | ||
2463 | memcpy(irk->val, val, 16); | |
2464 | bacpy(&irk->rpa, rpa); | |
2465 | ||
ca9142b8 | 2466 | return irk; |
970c4e46 JH |
2467 | } |
2468 | ||
55ed8ca1 JH |
2469 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2470 | { | |
2471 | struct link_key *key; | |
2472 | ||
2473 | key = hci_find_link_key(hdev, bdaddr); | |
2474 | if (!key) | |
2475 | return -ENOENT; | |
2476 | ||
6ed93dc6 | 2477 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2478 | |
0378b597 JH |
2479 | list_del_rcu(&key->list); |
2480 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2481 | |
2482 | return 0; | |
2483 | } | |
2484 | ||
e0b2b27e | 2485 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2486 | { |
970d0f1b | 2487 | struct smp_ltk *k; |
c51ffa0b | 2488 | int removed = 0; |
b899efaf | 2489 | |
970d0f1b | 2490 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2491 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2492 | continue; |
2493 | ||
6ed93dc6 | 2494 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2495 | |
970d0f1b JH |
2496 | list_del_rcu(&k->list); |
2497 | kfree_rcu(k, rcu); | |
c51ffa0b | 2498 | removed++; |
b899efaf VCG |
2499 | } |
2500 | ||
c51ffa0b | 2501 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2502 | } |
2503 | ||
a7ec7338 JH |
2504 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2505 | { | |
adae20cb | 2506 | struct smp_irk *k; |
a7ec7338 | 2507 | |
adae20cb | 2508 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2509 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2510 | continue; | |
2511 | ||
2512 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2513 | ||
adae20cb JH |
2514 | list_del_rcu(&k->list); |
2515 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2516 | } |
2517 | } | |
2518 | ||
55e76b38 JH |
2519 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2520 | { | |
2521 | struct smp_ltk *k; | |
4ba9faf3 | 2522 | struct smp_irk *irk; |
55e76b38 JH |
2523 | u8 addr_type; |
2524 | ||
2525 | if (type == BDADDR_BREDR) { | |
2526 | if (hci_find_link_key(hdev, bdaddr)) | |
2527 | return true; | |
2528 | return false; | |
2529 | } | |
2530 | ||
2531 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2532 | if (type == BDADDR_LE_PUBLIC) | |
2533 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2534 | else | |
2535 | addr_type = ADDR_LE_DEV_RANDOM; | |
2536 | ||
4ba9faf3 JH |
2537 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2538 | if (irk) { | |
2539 | bdaddr = &irk->bdaddr; | |
2540 | addr_type = irk->addr_type; | |
2541 | } | |
2542 | ||
55e76b38 JH |
2543 | rcu_read_lock(); |
2544 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2545 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2546 | rcu_read_unlock(); | |
55e76b38 | 2547 | return true; |
87c8b28d | 2548 | } |
55e76b38 JH |
2549 | } |
2550 | rcu_read_unlock(); | |
2551 | ||
2552 | return false; | |
2553 | } | |
2554 | ||
6bd32326 | 2555 | /* HCI command timer function */ |
65cc2b49 | 2556 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2557 | { |
65cc2b49 MH |
2558 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2559 | cmd_timer.work); | |
6bd32326 | 2560 | |
bda4f23a AE |
2561 | if (hdev->sent_cmd) { |
2562 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2563 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2564 | ||
2565 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2566 | } else { | |
2567 | BT_ERR("%s command tx timeout", hdev->name); | |
2568 | } | |
2569 | ||
6bd32326 | 2570 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2571 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2572 | } |
2573 | ||
2763eda6 | 2574 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2575 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2576 | { |
2577 | struct oob_data *data; | |
2578 | ||
6928a924 JH |
2579 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2580 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2581 | continue; | |
2582 | if (data->bdaddr_type != bdaddr_type) | |
2583 | continue; | |
2584 | return data; | |
2585 | } | |
2763eda6 SJ |
2586 | |
2587 | return NULL; | |
2588 | } | |
2589 | ||
6928a924 JH |
2590 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2591 | u8 bdaddr_type) | |
2763eda6 SJ |
2592 | { |
2593 | struct oob_data *data; | |
2594 | ||
6928a924 | 2595 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2596 | if (!data) |
2597 | return -ENOENT; | |
2598 | ||
6928a924 | 2599 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2600 | |
2601 | list_del(&data->list); | |
2602 | kfree(data); | |
2603 | ||
2604 | return 0; | |
2605 | } | |
2606 | ||
35f7498a | 2607 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2608 | { |
2609 | struct oob_data *data, *n; | |
2610 | ||
2611 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2612 | list_del(&data->list); | |
2613 | kfree(data); | |
2614 | } | |
2763eda6 SJ |
2615 | } |
2616 | ||
0798872e | 2617 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2618 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2619 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2620 | { |
2621 | struct oob_data *data; | |
2622 | ||
6928a924 | 2623 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2624 | if (!data) { |
0a14ab41 | 2625 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2626 | if (!data) |
2627 | return -ENOMEM; | |
2628 | ||
2629 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2630 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2631 | list_add(&data->list, &hdev->remote_oob_data); |
2632 | } | |
2633 | ||
81328d5c JH |
2634 | if (hash192 && rand192) { |
2635 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2636 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2637 | if (hash256 && rand256) |
2638 | data->present = 0x03; | |
81328d5c JH |
2639 | } else { |
2640 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2641 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2642 | if (hash256 && rand256) |
2643 | data->present = 0x02; | |
2644 | else | |
2645 | data->present = 0x00; | |
0798872e MH |
2646 | } |
2647 | ||
81328d5c JH |
2648 | if (hash256 && rand256) { |
2649 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2650 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2651 | } else { | |
2652 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2653 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2654 | if (hash192 && rand192) |
2655 | data->present = 0x01; | |
81328d5c | 2656 | } |
0798872e | 2657 | |
6ed93dc6 | 2658 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2659 | |
2660 | return 0; | |
2661 | } | |
2662 | ||
dcc36c16 | 2663 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2664 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2665 | { |
8035ded4 | 2666 | struct bdaddr_list *b; |
b2a66aad | 2667 | |
dcc36c16 | 2668 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2669 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2670 | return b; |
b9ee0a78 | 2671 | } |
b2a66aad AJ |
2672 | |
2673 | return NULL; | |
2674 | } | |
2675 | ||
dcc36c16 | 2676 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2677 | { |
2678 | struct list_head *p, *n; | |
2679 | ||
dcc36c16 | 2680 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2681 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2682 | |
2683 | list_del(p); | |
2684 | kfree(b); | |
2685 | } | |
b2a66aad AJ |
2686 | } |
2687 | ||
dcc36c16 | 2688 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2689 | { |
2690 | struct bdaddr_list *entry; | |
b2a66aad | 2691 | |
b9ee0a78 | 2692 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2693 | return -EBADF; |
2694 | ||
dcc36c16 | 2695 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2696 | return -EEXIST; |
b2a66aad | 2697 | |
27f70f3e | 2698 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2699 | if (!entry) |
2700 | return -ENOMEM; | |
b2a66aad AJ |
2701 | |
2702 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2703 | entry->bdaddr_type = type; |
b2a66aad | 2704 | |
dcc36c16 | 2705 | list_add(&entry->list, list); |
b2a66aad | 2706 | |
2a8357f2 | 2707 | return 0; |
b2a66aad AJ |
2708 | } |
2709 | ||
dcc36c16 | 2710 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2711 | { |
2712 | struct bdaddr_list *entry; | |
b2a66aad | 2713 | |
35f7498a | 2714 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2715 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2716 | return 0; |
2717 | } | |
b2a66aad | 2718 | |
dcc36c16 | 2719 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2720 | if (!entry) |
2721 | return -ENOENT; | |
2722 | ||
2723 | list_del(&entry->list); | |
2724 | kfree(entry); | |
2725 | ||
2726 | return 0; | |
2727 | } | |
2728 | ||
15819a70 AG |
2729 | /* This function requires the caller holds hdev->lock */ |
2730 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2731 | bdaddr_t *addr, u8 addr_type) | |
2732 | { | |
2733 | struct hci_conn_params *params; | |
2734 | ||
738f6185 JH |
2735 | /* The conn params list only contains identity addresses */ |
2736 | if (!hci_is_identity_address(addr, addr_type)) | |
2737 | return NULL; | |
2738 | ||
15819a70 AG |
2739 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
2740 | if (bacmp(¶ms->addr, addr) == 0 && | |
2741 | params->addr_type == addr_type) { | |
2742 | return params; | |
2743 | } | |
2744 | } | |
2745 | ||
2746 | return NULL; | |
2747 | } | |
2748 | ||
4b10966f | 2749 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2750 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2751 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2752 | { |
912b42ef | 2753 | struct hci_conn_params *param; |
a9b0a04c | 2754 | |
738f6185 JH |
2755 | /* The list only contains identity addresses */ |
2756 | if (!hci_is_identity_address(addr, addr_type)) | |
2757 | return NULL; | |
a9b0a04c | 2758 | |
501f8827 | 2759 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2760 | if (bacmp(¶m->addr, addr) == 0 && |
2761 | param->addr_type == addr_type) | |
2762 | return param; | |
4b10966f MH |
2763 | } |
2764 | ||
2765 | return NULL; | |
a9b0a04c AG |
2766 | } |
2767 | ||
15819a70 | 2768 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2769 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2770 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2771 | { |
2772 | struct hci_conn_params *params; | |
2773 | ||
c46245b3 | 2774 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 2775 | return NULL; |
a9b0a04c | 2776 | |
15819a70 | 2777 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce | 2778 | if (params) |
51d167c0 | 2779 | return params; |
15819a70 AG |
2780 | |
2781 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2782 | if (!params) { | |
2783 | BT_ERR("Out of memory"); | |
51d167c0 | 2784 | return NULL; |
15819a70 AG |
2785 | } |
2786 | ||
2787 | bacpy(¶ms->addr, addr); | |
2788 | params->addr_type = addr_type; | |
cef952ce AG |
2789 | |
2790 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2791 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2792 | |
bf5b3c8b MH |
2793 | params->conn_min_interval = hdev->le_conn_min_interval; |
2794 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2795 | params->conn_latency = hdev->le_conn_latency; | |
2796 | params->supervision_timeout = hdev->le_supv_timeout; | |
2797 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2798 | ||
2799 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2800 | ||
51d167c0 | 2801 | return params; |
bf5b3c8b MH |
2802 | } |
2803 | ||
f6c63249 | 2804 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2805 | { |
f8aaf9b6 | 2806 | if (params->conn) { |
f161dd41 | 2807 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2808 | hci_conn_put(params->conn); |
2809 | } | |
f161dd41 | 2810 | |
95305baa | 2811 | list_del(¶ms->action); |
15819a70 AG |
2812 | list_del(¶ms->list); |
2813 | kfree(params); | |
f6c63249 JH |
2814 | } |
2815 | ||
2816 | /* This function requires the caller holds hdev->lock */ | |
2817 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2818 | { | |
2819 | struct hci_conn_params *params; | |
2820 | ||
2821 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2822 | if (!params) | |
2823 | return; | |
2824 | ||
2825 | hci_conn_params_free(params); | |
15819a70 | 2826 | |
95305baa JH |
2827 | hci_update_background_scan(hdev); |
2828 | ||
15819a70 AG |
2829 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2830 | } | |
2831 | ||
2832 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2833 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2834 | { |
2835 | struct hci_conn_params *params, *tmp; | |
2836 | ||
2837 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2838 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2839 | continue; | |
15819a70 AG |
2840 | list_del(¶ms->list); |
2841 | kfree(params); | |
2842 | } | |
2843 | ||
55af49a8 | 2844 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2845 | } |
2846 | ||
2847 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 2848 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2849 | { |
15819a70 | 2850 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2851 | |
f6c63249 JH |
2852 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2853 | hci_conn_params_free(params); | |
77a77a30 | 2854 | |
a4790dbd | 2855 | hci_update_background_scan(hdev); |
77a77a30 | 2856 | |
15819a70 | 2857 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2858 | } |
2859 | ||
1904a853 | 2860 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 2861 | { |
4c87eaab AG |
2862 | if (status) { |
2863 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2864 | |
4c87eaab AG |
2865 | hci_dev_lock(hdev); |
2866 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2867 | hci_dev_unlock(hdev); | |
2868 | return; | |
2869 | } | |
7ba8b4be AG |
2870 | } |
2871 | ||
1904a853 MH |
2872 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
2873 | u16 opcode) | |
7ba8b4be | 2874 | { |
4c87eaab AG |
2875 | /* General inquiry access code (GIAC) */ |
2876 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2877 | struct hci_request req; | |
2878 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2879 | int err; |
2880 | ||
4c87eaab AG |
2881 | if (status) { |
2882 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2883 | return; | |
2884 | } | |
7ba8b4be | 2885 | |
2d28cfe7 JP |
2886 | hdev->discovery.scan_start = 0; |
2887 | ||
4c87eaab AG |
2888 | switch (hdev->discovery.type) { |
2889 | case DISCOV_TYPE_LE: | |
2890 | hci_dev_lock(hdev); | |
2891 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2892 | hci_dev_unlock(hdev); | |
2893 | break; | |
7ba8b4be | 2894 | |
4c87eaab AG |
2895 | case DISCOV_TYPE_INTERLEAVED: |
2896 | hci_req_init(&req, hdev); | |
7ba8b4be | 2897 | |
4c87eaab AG |
2898 | memset(&cp, 0, sizeof(cp)); |
2899 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2900 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2901 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2902 | |
4c87eaab | 2903 | hci_dev_lock(hdev); |
7dbfac1d | 2904 | |
4c87eaab | 2905 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2906 | |
4c87eaab AG |
2907 | err = hci_req_run(&req, inquiry_complete); |
2908 | if (err) { | |
2909 | BT_ERR("Inquiry request failed: err %d", err); | |
2910 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2911 | } | |
7dbfac1d | 2912 | |
4c87eaab AG |
2913 | hci_dev_unlock(hdev); |
2914 | break; | |
7dbfac1d | 2915 | } |
7dbfac1d AG |
2916 | } |
2917 | ||
7ba8b4be AG |
2918 | static void le_scan_disable_work(struct work_struct *work) |
2919 | { | |
2920 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2921 | le_scan_disable.work); |
4c87eaab AG |
2922 | struct hci_request req; |
2923 | int err; | |
7ba8b4be AG |
2924 | |
2925 | BT_DBG("%s", hdev->name); | |
2926 | ||
2d28cfe7 JP |
2927 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
2928 | ||
4c87eaab | 2929 | hci_req_init(&req, hdev); |
28b75a89 | 2930 | |
b1efcc28 | 2931 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 2932 | |
4c87eaab AG |
2933 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2934 | if (err) | |
2935 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2936 | } |
2937 | ||
2d28cfe7 JP |
2938 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
2939 | u16 opcode) | |
2940 | { | |
2941 | unsigned long timeout, duration, scan_start, now; | |
2942 | ||
2943 | BT_DBG("%s", hdev->name); | |
2944 | ||
2945 | if (status) { | |
2946 | BT_ERR("Failed to restart LE scan: status %d", status); | |
2947 | return; | |
2948 | } | |
2949 | ||
2950 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || | |
2951 | !hdev->discovery.scan_start) | |
2952 | return; | |
2953 | ||
2954 | /* When the scan was started, hdev->le_scan_disable has been queued | |
2955 | * after duration from scan_start. During scan restart this job | |
2956 | * has been canceled, and we need to queue it again after proper | |
2957 | * timeout, to make sure that scan does not run indefinitely. | |
2958 | */ | |
2959 | duration = hdev->discovery.scan_duration; | |
2960 | scan_start = hdev->discovery.scan_start; | |
2961 | now = jiffies; | |
2962 | if (now - scan_start <= duration) { | |
2963 | int elapsed; | |
2964 | ||
2965 | if (now >= scan_start) | |
2966 | elapsed = now - scan_start; | |
2967 | else | |
2968 | elapsed = ULONG_MAX - scan_start + now; | |
2969 | ||
2970 | timeout = duration - elapsed; | |
2971 | } else { | |
2972 | timeout = 0; | |
2973 | } | |
2974 | queue_delayed_work(hdev->workqueue, | |
2975 | &hdev->le_scan_disable, timeout); | |
2976 | } | |
2977 | ||
2978 | static void le_scan_restart_work(struct work_struct *work) | |
2979 | { | |
2980 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
2981 | le_scan_restart.work); | |
2982 | struct hci_request req; | |
2983 | struct hci_cp_le_set_scan_enable cp; | |
2984 | int err; | |
2985 | ||
2986 | BT_DBG("%s", hdev->name); | |
2987 | ||
2988 | /* If controller is not scanning we are done. */ | |
d7a5a11d | 2989 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
2d28cfe7 JP |
2990 | return; |
2991 | ||
2992 | hci_req_init(&req, hdev); | |
2993 | ||
2994 | hci_req_add_le_scan_disable(&req); | |
2995 | ||
2996 | memset(&cp, 0, sizeof(cp)); | |
2997 | cp.enable = LE_SCAN_ENABLE; | |
2998 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
2999 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
3000 | ||
3001 | err = hci_req_run(&req, le_scan_restart_work_complete); | |
3002 | if (err) | |
3003 | BT_ERR("Restart LE scan request failed: err %d", err); | |
3004 | } | |
3005 | ||
a1f4c318 JH |
3006 | /* Copy the Identity Address of the controller. |
3007 | * | |
3008 | * If the controller has a public BD_ADDR, then by default use that one. | |
3009 | * If this is a LE only controller without a public address, default to | |
3010 | * the static random address. | |
3011 | * | |
3012 | * For debugging purposes it is possible to force controllers with a | |
3013 | * public address to use the static random address instead. | |
50b5b952 MH |
3014 | * |
3015 | * In case BR/EDR has been disabled on a dual-mode controller and | |
3016 | * userspace has configured a static address, then that address | |
3017 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
3018 | */ |
3019 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3020 | u8 *bdaddr_type) | |
3021 | { | |
111902f7 | 3022 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
50b5b952 | 3023 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 3024 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 3025 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
3026 | bacpy(bdaddr, &hdev->static_addr); |
3027 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3028 | } else { | |
3029 | bacpy(bdaddr, &hdev->bdaddr); | |
3030 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3031 | } | |
3032 | } | |
3033 | ||
9be0dab7 DH |
3034 | /* Alloc HCI device */ |
3035 | struct hci_dev *hci_alloc_dev(void) | |
3036 | { | |
3037 | struct hci_dev *hdev; | |
3038 | ||
27f70f3e | 3039 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3040 | if (!hdev) |
3041 | return NULL; | |
3042 | ||
b1b813d4 DH |
3043 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3044 | hdev->esco_type = (ESCO_HV1); | |
3045 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3046 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3047 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3048 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3049 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3050 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3051 | |
b1b813d4 DH |
3052 | hdev->sniff_max_interval = 800; |
3053 | hdev->sniff_min_interval = 80; | |
3054 | ||
3f959d46 | 3055 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3056 | hdev->le_adv_min_interval = 0x0800; |
3057 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3058 | hdev->le_scan_interval = 0x0060; |
3059 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3060 | hdev->le_conn_min_interval = 0x0028; |
3061 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3062 | hdev->le_conn_latency = 0x0000; |
3063 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3064 | hdev->le_def_tx_len = 0x001b; |
3065 | hdev->le_def_tx_time = 0x0148; | |
3066 | hdev->le_max_tx_len = 0x001b; | |
3067 | hdev->le_max_tx_time = 0x0148; | |
3068 | hdev->le_max_rx_len = 0x001b; | |
3069 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3070 | |
d6bfd59c | 3071 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3072 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3073 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3074 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3075 | |
b1b813d4 DH |
3076 | mutex_init(&hdev->lock); |
3077 | mutex_init(&hdev->req_lock); | |
3078 | ||
3079 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3080 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3081 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3082 | INIT_LIST_HEAD(&hdev->uuids); |
3083 | INIT_LIST_HEAD(&hdev->link_keys); | |
3084 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3085 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3086 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3087 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3088 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3089 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3090 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3091 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3092 | |
3093 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3094 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3095 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3096 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3097 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3098 | |
b1b813d4 DH |
3099 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3100 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3101 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2d28cfe7 | 3102 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
b1b813d4 | 3103 | |
b1b813d4 DH |
3104 | skb_queue_head_init(&hdev->rx_q); |
3105 | skb_queue_head_init(&hdev->cmd_q); | |
3106 | skb_queue_head_init(&hdev->raw_q); | |
3107 | ||
3108 | init_waitqueue_head(&hdev->req_wait_q); | |
3109 | ||
65cc2b49 | 3110 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3111 | |
b1b813d4 DH |
3112 | hci_init_sysfs(hdev); |
3113 | discovery_init(hdev); | |
9be0dab7 DH |
3114 | |
3115 | return hdev; | |
3116 | } | |
3117 | EXPORT_SYMBOL(hci_alloc_dev); | |
3118 | ||
3119 | /* Free HCI device */ | |
3120 | void hci_free_dev(struct hci_dev *hdev) | |
3121 | { | |
9be0dab7 DH |
3122 | /* will free via device release */ |
3123 | put_device(&hdev->dev); | |
3124 | } | |
3125 | EXPORT_SYMBOL(hci_free_dev); | |
3126 | ||
1da177e4 LT |
3127 | /* Register HCI device */ |
3128 | int hci_register_dev(struct hci_dev *hdev) | |
3129 | { | |
b1b813d4 | 3130 | int id, error; |
1da177e4 | 3131 | |
74292d5a | 3132 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3133 | return -EINVAL; |
3134 | ||
08add513 MM |
3135 | /* Do not allow HCI_AMP devices to register at index 0, |
3136 | * so the index can be used as the AMP controller ID. | |
3137 | */ | |
3df92b31 SL |
3138 | switch (hdev->dev_type) { |
3139 | case HCI_BREDR: | |
3140 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3141 | break; | |
3142 | case HCI_AMP: | |
3143 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3144 | break; | |
3145 | default: | |
3146 | return -EINVAL; | |
1da177e4 | 3147 | } |
8e87d142 | 3148 | |
3df92b31 SL |
3149 | if (id < 0) |
3150 | return id; | |
3151 | ||
1da177e4 LT |
3152 | sprintf(hdev->name, "hci%d", id); |
3153 | hdev->id = id; | |
2d8b3a11 AE |
3154 | |
3155 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3156 | ||
d8537548 KC |
3157 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3158 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3159 | if (!hdev->workqueue) { |
3160 | error = -ENOMEM; | |
3161 | goto err; | |
3162 | } | |
f48fd9c8 | 3163 | |
d8537548 KC |
3164 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3165 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3166 | if (!hdev->req_workqueue) { |
3167 | destroy_workqueue(hdev->workqueue); | |
3168 | error = -ENOMEM; | |
3169 | goto err; | |
3170 | } | |
3171 | ||
0153e2ec MH |
3172 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3173 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3174 | ||
bdc3e0f1 MH |
3175 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3176 | ||
3177 | error = device_add(&hdev->dev); | |
33ca954d | 3178 | if (error < 0) |
54506918 | 3179 | goto err_wqueue; |
1da177e4 | 3180 | |
611b30f7 | 3181 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3182 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3183 | hdev); | |
611b30f7 MH |
3184 | if (hdev->rfkill) { |
3185 | if (rfkill_register(hdev->rfkill) < 0) { | |
3186 | rfkill_destroy(hdev->rfkill); | |
3187 | hdev->rfkill = NULL; | |
3188 | } | |
3189 | } | |
3190 | ||
5e130367 | 3191 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3192 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3193 | |
a1536da2 MH |
3194 | hci_dev_set_flag(hdev, HCI_SETUP); |
3195 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3196 | |
01cd3404 | 3197 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3198 | /* Assume BR/EDR support until proven otherwise (such as |
3199 | * through reading supported features during init. | |
3200 | */ | |
a1536da2 | 3201 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3202 | } |
ce2be9ac | 3203 | |
fcee3377 GP |
3204 | write_lock(&hci_dev_list_lock); |
3205 | list_add(&hdev->list, &hci_dev_list); | |
3206 | write_unlock(&hci_dev_list_lock); | |
3207 | ||
4a964404 MH |
3208 | /* Devices that are marked for raw-only usage are unconfigured |
3209 | * and should not be included in normal operation. | |
fee746b0 MH |
3210 | */ |
3211 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3212 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3213 | |
1da177e4 | 3214 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3215 | hci_dev_hold(hdev); |
1da177e4 | 3216 | |
19202573 | 3217 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3218 | |
1da177e4 | 3219 | return id; |
f48fd9c8 | 3220 | |
33ca954d DH |
3221 | err_wqueue: |
3222 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3223 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3224 | err: |
3df92b31 | 3225 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3226 | |
33ca954d | 3227 | return error; |
1da177e4 LT |
3228 | } |
3229 | EXPORT_SYMBOL(hci_register_dev); | |
3230 | ||
3231 | /* Unregister HCI device */ | |
59735631 | 3232 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3233 | { |
3df92b31 | 3234 | int i, id; |
ef222013 | 3235 | |
c13854ce | 3236 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3237 | |
a1536da2 | 3238 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3239 | |
3df92b31 SL |
3240 | id = hdev->id; |
3241 | ||
f20d09d5 | 3242 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3243 | list_del(&hdev->list); |
f20d09d5 | 3244 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3245 | |
3246 | hci_dev_do_close(hdev); | |
3247 | ||
cd4c5391 | 3248 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
3249 | kfree_skb(hdev->reassembly[i]); |
3250 | ||
b9b5ef18 GP |
3251 | cancel_work_sync(&hdev->power_on); |
3252 | ||
ab81cbf9 | 3253 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3254 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3255 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3256 | hci_dev_lock(hdev); |
744cf19e | 3257 | mgmt_index_removed(hdev); |
09fd0de5 | 3258 | hci_dev_unlock(hdev); |
56e5cb86 | 3259 | } |
ab81cbf9 | 3260 | |
2e58ef3e JH |
3261 | /* mgmt_index_removed should take care of emptying the |
3262 | * pending list */ | |
3263 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3264 | ||
1da177e4 LT |
3265 | hci_notify(hdev, HCI_DEV_UNREG); |
3266 | ||
611b30f7 MH |
3267 | if (hdev->rfkill) { |
3268 | rfkill_unregister(hdev->rfkill); | |
3269 | rfkill_destroy(hdev->rfkill); | |
3270 | } | |
3271 | ||
bdc3e0f1 | 3272 | device_del(&hdev->dev); |
147e2d59 | 3273 | |
0153e2ec MH |
3274 | debugfs_remove_recursive(hdev->debugfs); |
3275 | ||
f48fd9c8 | 3276 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3277 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3278 | |
09fd0de5 | 3279 | hci_dev_lock(hdev); |
dcc36c16 | 3280 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3281 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3282 | hci_uuids_clear(hdev); |
55ed8ca1 | 3283 | hci_link_keys_clear(hdev); |
b899efaf | 3284 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3285 | hci_smp_irks_clear(hdev); |
2763eda6 | 3286 | hci_remote_oob_data_clear(hdev); |
dcc36c16 | 3287 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3288 | hci_conn_params_clear_all(hdev); |
22078800 | 3289 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3290 | hci_dev_unlock(hdev); |
e2e0cacb | 3291 | |
dc946bd8 | 3292 | hci_dev_put(hdev); |
3df92b31 SL |
3293 | |
3294 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3295 | } |
3296 | EXPORT_SYMBOL(hci_unregister_dev); | |
3297 | ||
3298 | /* Suspend HCI device */ | |
3299 | int hci_suspend_dev(struct hci_dev *hdev) | |
3300 | { | |
3301 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3302 | return 0; | |
3303 | } | |
3304 | EXPORT_SYMBOL(hci_suspend_dev); | |
3305 | ||
3306 | /* Resume HCI device */ | |
3307 | int hci_resume_dev(struct hci_dev *hdev) | |
3308 | { | |
3309 | hci_notify(hdev, HCI_DEV_RESUME); | |
3310 | return 0; | |
3311 | } | |
3312 | EXPORT_SYMBOL(hci_resume_dev); | |
3313 | ||
75e0569f MH |
3314 | /* Reset HCI device */ |
3315 | int hci_reset_dev(struct hci_dev *hdev) | |
3316 | { | |
3317 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3318 | struct sk_buff *skb; | |
3319 | ||
3320 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3321 | if (!skb) | |
3322 | return -ENOMEM; | |
3323 | ||
3324 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3325 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3326 | ||
3327 | /* Send Hardware Error to upper stack */ | |
3328 | return hci_recv_frame(hdev, skb); | |
3329 | } | |
3330 | EXPORT_SYMBOL(hci_reset_dev); | |
3331 | ||
76bca880 | 3332 | /* Receive frame from HCI drivers */ |
e1a26170 | 3333 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3334 | { |
76bca880 | 3335 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3336 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3337 | kfree_skb(skb); |
3338 | return -ENXIO; | |
3339 | } | |
3340 | ||
d82603c6 | 3341 | /* Incoming skb */ |
76bca880 MH |
3342 | bt_cb(skb)->incoming = 1; |
3343 | ||
3344 | /* Time stamp */ | |
3345 | __net_timestamp(skb); | |
3346 | ||
76bca880 | 3347 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3348 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3349 | |
76bca880 MH |
3350 | return 0; |
3351 | } | |
3352 | EXPORT_SYMBOL(hci_recv_frame); | |
3353 | ||
33e882a5 | 3354 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 3355 | int count, __u8 index) |
33e882a5 SS |
3356 | { |
3357 | int len = 0; | |
3358 | int hlen = 0; | |
3359 | int remain = count; | |
3360 | struct sk_buff *skb; | |
3361 | struct bt_skb_cb *scb; | |
3362 | ||
3363 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 3364 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
3365 | return -EILSEQ; |
3366 | ||
3367 | skb = hdev->reassembly[index]; | |
3368 | ||
3369 | if (!skb) { | |
3370 | switch (type) { | |
3371 | case HCI_ACLDATA_PKT: | |
3372 | len = HCI_MAX_FRAME_SIZE; | |
3373 | hlen = HCI_ACL_HDR_SIZE; | |
3374 | break; | |
3375 | case HCI_EVENT_PKT: | |
3376 | len = HCI_MAX_EVENT_SIZE; | |
3377 | hlen = HCI_EVENT_HDR_SIZE; | |
3378 | break; | |
3379 | case HCI_SCODATA_PKT: | |
3380 | len = HCI_MAX_SCO_SIZE; | |
3381 | hlen = HCI_SCO_HDR_SIZE; | |
3382 | break; | |
3383 | } | |
3384 | ||
1e429f38 | 3385 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
3386 | if (!skb) |
3387 | return -ENOMEM; | |
3388 | ||
3389 | scb = (void *) skb->cb; | |
3390 | scb->expect = hlen; | |
3391 | scb->pkt_type = type; | |
3392 | ||
33e882a5 SS |
3393 | hdev->reassembly[index] = skb; |
3394 | } | |
3395 | ||
3396 | while (count) { | |
3397 | scb = (void *) skb->cb; | |
89bb46d0 | 3398 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
3399 | |
3400 | memcpy(skb_put(skb, len), data, len); | |
3401 | ||
3402 | count -= len; | |
3403 | data += len; | |
3404 | scb->expect -= len; | |
3405 | remain = count; | |
3406 | ||
3407 | switch (type) { | |
3408 | case HCI_EVENT_PKT: | |
3409 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
3410 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
3411 | scb->expect = h->plen; | |
3412 | ||
3413 | if (skb_tailroom(skb) < scb->expect) { | |
3414 | kfree_skb(skb); | |
3415 | hdev->reassembly[index] = NULL; | |
3416 | return -ENOMEM; | |
3417 | } | |
3418 | } | |
3419 | break; | |
3420 | ||
3421 | case HCI_ACLDATA_PKT: | |
3422 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
3423 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
3424 | scb->expect = __le16_to_cpu(h->dlen); | |
3425 | ||
3426 | if (skb_tailroom(skb) < scb->expect) { | |
3427 | kfree_skb(skb); | |
3428 | hdev->reassembly[index] = NULL; | |
3429 | return -ENOMEM; | |
3430 | } | |
3431 | } | |
3432 | break; | |
3433 | ||
3434 | case HCI_SCODATA_PKT: | |
3435 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
3436 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
3437 | scb->expect = h->dlen; | |
3438 | ||
3439 | if (skb_tailroom(skb) < scb->expect) { | |
3440 | kfree_skb(skb); | |
3441 | hdev->reassembly[index] = NULL; | |
3442 | return -ENOMEM; | |
3443 | } | |
3444 | } | |
3445 | break; | |
3446 | } | |
3447 | ||
3448 | if (scb->expect == 0) { | |
3449 | /* Complete frame */ | |
3450 | ||
3451 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 3452 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
3453 | |
3454 | hdev->reassembly[index] = NULL; | |
3455 | return remain; | |
3456 | } | |
3457 | } | |
3458 | ||
3459 | return remain; | |
3460 | } | |
3461 | ||
99811510 SS |
3462 | #define STREAM_REASSEMBLY 0 |
3463 | ||
3464 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
3465 | { | |
3466 | int type; | |
3467 | int rem = 0; | |
3468 | ||
da5f6c37 | 3469 | while (count) { |
99811510 SS |
3470 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
3471 | ||
3472 | if (!skb) { | |
3473 | struct { char type; } *pkt; | |
3474 | ||
3475 | /* Start of the frame */ | |
3476 | pkt = data; | |
3477 | type = pkt->type; | |
3478 | ||
3479 | data++; | |
3480 | count--; | |
3481 | } else | |
3482 | type = bt_cb(skb)->pkt_type; | |
3483 | ||
1e429f38 | 3484 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 3485 | STREAM_REASSEMBLY); |
99811510 SS |
3486 | if (rem < 0) |
3487 | return rem; | |
3488 | ||
3489 | data += (count - rem); | |
3490 | count = rem; | |
f81c6224 | 3491 | } |
99811510 SS |
3492 | |
3493 | return rem; | |
3494 | } | |
3495 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
3496 | ||
1da177e4 LT |
3497 | /* ---- Interface to upper protocols ---- */ |
3498 | ||
1da177e4 LT |
3499 | int hci_register_cb(struct hci_cb *cb) |
3500 | { | |
3501 | BT_DBG("%p name %s", cb, cb->name); | |
3502 | ||
fba7ecf0 | 3503 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3504 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3505 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3506 | |
3507 | return 0; | |
3508 | } | |
3509 | EXPORT_SYMBOL(hci_register_cb); | |
3510 | ||
3511 | int hci_unregister_cb(struct hci_cb *cb) | |
3512 | { | |
3513 | BT_DBG("%p name %s", cb, cb->name); | |
3514 | ||
fba7ecf0 | 3515 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3516 | list_del(&cb->list); |
fba7ecf0 | 3517 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3518 | |
3519 | return 0; | |
3520 | } | |
3521 | EXPORT_SYMBOL(hci_unregister_cb); | |
3522 | ||
51086991 | 3523 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3524 | { |
cdc52faa MH |
3525 | int err; |
3526 | ||
0d48d939 | 3527 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3528 | |
cd82e61c MH |
3529 | /* Time stamp */ |
3530 | __net_timestamp(skb); | |
1da177e4 | 3531 | |
cd82e61c MH |
3532 | /* Send copy to monitor */ |
3533 | hci_send_to_monitor(hdev, skb); | |
3534 | ||
3535 | if (atomic_read(&hdev->promisc)) { | |
3536 | /* Send copy to the sockets */ | |
470fe1b5 | 3537 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3538 | } |
3539 | ||
3540 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3541 | skb_orphan(skb); | |
3542 | ||
cdc52faa MH |
3543 | err = hdev->send(hdev, skb); |
3544 | if (err < 0) { | |
3545 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3546 | kfree_skb(skb); | |
3547 | } | |
1da177e4 LT |
3548 | } |
3549 | ||
899de765 MH |
3550 | bool hci_req_pending(struct hci_dev *hdev) |
3551 | { | |
3552 | return (hdev->req_status == HCI_REQ_PEND); | |
3553 | } | |
3554 | ||
1ca3a9d0 | 3555 | /* Send HCI command */ |
07dc93dd JH |
3556 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3557 | const void *param) | |
1ca3a9d0 JH |
3558 | { |
3559 | struct sk_buff *skb; | |
3560 | ||
3561 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3562 | ||
3563 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3564 | if (!skb) { | |
3565 | BT_ERR("%s no memory for command", hdev->name); | |
3566 | return -ENOMEM; | |
3567 | } | |
3568 | ||
49c922bb | 3569 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3570 | * single-command requests. |
3571 | */ | |
6368c235 | 3572 | bt_cb(skb)->req_start = 1; |
11714b3d | 3573 | |
1da177e4 | 3574 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3575 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3576 | |
3577 | return 0; | |
3578 | } | |
1da177e4 LT |
3579 | |
3580 | /* Get data from the previously sent command */ | |
a9de9248 | 3581 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3582 | { |
3583 | struct hci_command_hdr *hdr; | |
3584 | ||
3585 | if (!hdev->sent_cmd) | |
3586 | return NULL; | |
3587 | ||
3588 | hdr = (void *) hdev->sent_cmd->data; | |
3589 | ||
a9de9248 | 3590 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3591 | return NULL; |
3592 | ||
f0e09510 | 3593 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3594 | |
3595 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3596 | } | |
3597 | ||
3598 | /* Send ACL data */ | |
3599 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3600 | { | |
3601 | struct hci_acl_hdr *hdr; | |
3602 | int len = skb->len; | |
3603 | ||
badff6d0 ACM |
3604 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3605 | skb_reset_transport_header(skb); | |
9c70220b | 3606 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3607 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3608 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3609 | } |
3610 | ||
ee22be7e | 3611 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3612 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3613 | { |
ee22be7e | 3614 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3615 | struct hci_dev *hdev = conn->hdev; |
3616 | struct sk_buff *list; | |
3617 | ||
087bfd99 GP |
3618 | skb->len = skb_headlen(skb); |
3619 | skb->data_len = 0; | |
3620 | ||
3621 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3622 | |
3623 | switch (hdev->dev_type) { | |
3624 | case HCI_BREDR: | |
3625 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3626 | break; | |
3627 | case HCI_AMP: | |
3628 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3629 | break; | |
3630 | default: | |
3631 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3632 | return; | |
3633 | } | |
087bfd99 | 3634 | |
70f23020 AE |
3635 | list = skb_shinfo(skb)->frag_list; |
3636 | if (!list) { | |
1da177e4 LT |
3637 | /* Non fragmented */ |
3638 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3639 | ||
73d80deb | 3640 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3641 | } else { |
3642 | /* Fragmented */ | |
3643 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3644 | ||
3645 | skb_shinfo(skb)->frag_list = NULL; | |
3646 | ||
9cfd5a23 JR |
3647 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3648 | * here because of 6LoWPAN links, as there this function is | |
3649 | * called from softirq and using normal spin lock could cause | |
3650 | * deadlocks. | |
3651 | */ | |
3652 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3653 | |
73d80deb | 3654 | __skb_queue_tail(queue, skb); |
e702112f AE |
3655 | |
3656 | flags &= ~ACL_START; | |
3657 | flags |= ACL_CONT; | |
1da177e4 LT |
3658 | do { |
3659 | skb = list; list = list->next; | |
8e87d142 | 3660 | |
0d48d939 | 3661 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3662 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3663 | |
3664 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3665 | ||
73d80deb | 3666 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3667 | } while (list); |
3668 | ||
9cfd5a23 | 3669 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3670 | } |
73d80deb LAD |
3671 | } |
3672 | ||
3673 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3674 | { | |
ee22be7e | 3675 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3676 | |
f0e09510 | 3677 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3678 | |
ee22be7e | 3679 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3680 | |
3eff45ea | 3681 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3682 | } |
1da177e4 LT |
3683 | |
3684 | /* Send SCO data */ | |
0d861d8b | 3685 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3686 | { |
3687 | struct hci_dev *hdev = conn->hdev; | |
3688 | struct hci_sco_hdr hdr; | |
3689 | ||
3690 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3691 | ||
aca3192c | 3692 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3693 | hdr.dlen = skb->len; |
3694 | ||
badff6d0 ACM |
3695 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3696 | skb_reset_transport_header(skb); | |
9c70220b | 3697 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3698 | |
0d48d939 | 3699 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3700 | |
1da177e4 | 3701 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3702 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3703 | } |
1da177e4 LT |
3704 | |
3705 | /* ---- HCI TX task (outgoing data) ---- */ | |
3706 | ||
3707 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3708 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3709 | int *quote) | |
1da177e4 LT |
3710 | { |
3711 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3712 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3713 | unsigned int num = 0, min = ~0; |
1da177e4 | 3714 | |
8e87d142 | 3715 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3716 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3717 | |
3718 | rcu_read_lock(); | |
3719 | ||
3720 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3721 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3722 | continue; |
769be974 MH |
3723 | |
3724 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3725 | continue; | |
3726 | ||
1da177e4 LT |
3727 | num++; |
3728 | ||
3729 | if (c->sent < min) { | |
3730 | min = c->sent; | |
3731 | conn = c; | |
3732 | } | |
52087a79 LAD |
3733 | |
3734 | if (hci_conn_num(hdev, type) == num) | |
3735 | break; | |
1da177e4 LT |
3736 | } |
3737 | ||
bf4c6325 GP |
3738 | rcu_read_unlock(); |
3739 | ||
1da177e4 | 3740 | if (conn) { |
6ed58ec5 VT |
3741 | int cnt, q; |
3742 | ||
3743 | switch (conn->type) { | |
3744 | case ACL_LINK: | |
3745 | cnt = hdev->acl_cnt; | |
3746 | break; | |
3747 | case SCO_LINK: | |
3748 | case ESCO_LINK: | |
3749 | cnt = hdev->sco_cnt; | |
3750 | break; | |
3751 | case LE_LINK: | |
3752 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3753 | break; | |
3754 | default: | |
3755 | cnt = 0; | |
3756 | BT_ERR("Unknown link type"); | |
3757 | } | |
3758 | ||
3759 | q = cnt / num; | |
1da177e4 LT |
3760 | *quote = q ? q : 1; |
3761 | } else | |
3762 | *quote = 0; | |
3763 | ||
3764 | BT_DBG("conn %p quote %d", conn, *quote); | |
3765 | return conn; | |
3766 | } | |
3767 | ||
6039aa73 | 3768 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3769 | { |
3770 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3771 | struct hci_conn *c; |
1da177e4 | 3772 | |
bae1f5d9 | 3773 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3774 | |
bf4c6325 GP |
3775 | rcu_read_lock(); |
3776 | ||
1da177e4 | 3777 | /* Kill stalled connections */ |
bf4c6325 | 3778 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3779 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3780 | BT_ERR("%s killing stalled connection %pMR", |
3781 | hdev->name, &c->dst); | |
bed71748 | 3782 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3783 | } |
3784 | } | |
bf4c6325 GP |
3785 | |
3786 | rcu_read_unlock(); | |
1da177e4 LT |
3787 | } |
3788 | ||
6039aa73 GP |
3789 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3790 | int *quote) | |
1da177e4 | 3791 | { |
73d80deb LAD |
3792 | struct hci_conn_hash *h = &hdev->conn_hash; |
3793 | struct hci_chan *chan = NULL; | |
abc5de8f | 3794 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3795 | struct hci_conn *conn; |
73d80deb LAD |
3796 | int cnt, q, conn_num = 0; |
3797 | ||
3798 | BT_DBG("%s", hdev->name); | |
3799 | ||
bf4c6325 GP |
3800 | rcu_read_lock(); |
3801 | ||
3802 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3803 | struct hci_chan *tmp; |
3804 | ||
3805 | if (conn->type != type) | |
3806 | continue; | |
3807 | ||
3808 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3809 | continue; | |
3810 | ||
3811 | conn_num++; | |
3812 | ||
8192edef | 3813 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3814 | struct sk_buff *skb; |
3815 | ||
3816 | if (skb_queue_empty(&tmp->data_q)) | |
3817 | continue; | |
3818 | ||
3819 | skb = skb_peek(&tmp->data_q); | |
3820 | if (skb->priority < cur_prio) | |
3821 | continue; | |
3822 | ||
3823 | if (skb->priority > cur_prio) { | |
3824 | num = 0; | |
3825 | min = ~0; | |
3826 | cur_prio = skb->priority; | |
3827 | } | |
3828 | ||
3829 | num++; | |
3830 | ||
3831 | if (conn->sent < min) { | |
3832 | min = conn->sent; | |
3833 | chan = tmp; | |
3834 | } | |
3835 | } | |
3836 | ||
3837 | if (hci_conn_num(hdev, type) == conn_num) | |
3838 | break; | |
3839 | } | |
3840 | ||
bf4c6325 GP |
3841 | rcu_read_unlock(); |
3842 | ||
73d80deb LAD |
3843 | if (!chan) |
3844 | return NULL; | |
3845 | ||
3846 | switch (chan->conn->type) { | |
3847 | case ACL_LINK: | |
3848 | cnt = hdev->acl_cnt; | |
3849 | break; | |
bd1eb66b AE |
3850 | case AMP_LINK: |
3851 | cnt = hdev->block_cnt; | |
3852 | break; | |
73d80deb LAD |
3853 | case SCO_LINK: |
3854 | case ESCO_LINK: | |
3855 | cnt = hdev->sco_cnt; | |
3856 | break; | |
3857 | case LE_LINK: | |
3858 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3859 | break; | |
3860 | default: | |
3861 | cnt = 0; | |
3862 | BT_ERR("Unknown link type"); | |
3863 | } | |
3864 | ||
3865 | q = cnt / num; | |
3866 | *quote = q ? q : 1; | |
3867 | BT_DBG("chan %p quote %d", chan, *quote); | |
3868 | return chan; | |
3869 | } | |
3870 | ||
02b20f0b LAD |
3871 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3872 | { | |
3873 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3874 | struct hci_conn *conn; | |
3875 | int num = 0; | |
3876 | ||
3877 | BT_DBG("%s", hdev->name); | |
3878 | ||
bf4c6325 GP |
3879 | rcu_read_lock(); |
3880 | ||
3881 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3882 | struct hci_chan *chan; |
3883 | ||
3884 | if (conn->type != type) | |
3885 | continue; | |
3886 | ||
3887 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3888 | continue; | |
3889 | ||
3890 | num++; | |
3891 | ||
8192edef | 3892 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3893 | struct sk_buff *skb; |
3894 | ||
3895 | if (chan->sent) { | |
3896 | chan->sent = 0; | |
3897 | continue; | |
3898 | } | |
3899 | ||
3900 | if (skb_queue_empty(&chan->data_q)) | |
3901 | continue; | |
3902 | ||
3903 | skb = skb_peek(&chan->data_q); | |
3904 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3905 | continue; | |
3906 | ||
3907 | skb->priority = HCI_PRIO_MAX - 1; | |
3908 | ||
3909 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3910 | skb->priority); |
02b20f0b LAD |
3911 | } |
3912 | ||
3913 | if (hci_conn_num(hdev, type) == num) | |
3914 | break; | |
3915 | } | |
bf4c6325 GP |
3916 | |
3917 | rcu_read_unlock(); | |
3918 | ||
02b20f0b LAD |
3919 | } |
3920 | ||
b71d385a AE |
3921 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3922 | { | |
3923 | /* Calculate count of blocks used by this packet */ | |
3924 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3925 | } | |
3926 | ||
6039aa73 | 3927 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3928 | { |
d7a5a11d | 3929 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3930 | /* ACL tx timeout must be longer than maximum |
3931 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3932 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3933 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3934 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3935 | } |
63d2bc1b | 3936 | } |
1da177e4 | 3937 | |
6039aa73 | 3938 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3939 | { |
3940 | unsigned int cnt = hdev->acl_cnt; | |
3941 | struct hci_chan *chan; | |
3942 | struct sk_buff *skb; | |
3943 | int quote; | |
3944 | ||
3945 | __check_timeout(hdev, cnt); | |
04837f64 | 3946 | |
73d80deb | 3947 | while (hdev->acl_cnt && |
a8c5fb1a | 3948 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3949 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3950 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3951 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3952 | skb->len, skb->priority); |
73d80deb | 3953 | |
ec1cce24 LAD |
3954 | /* Stop if priority has changed */ |
3955 | if (skb->priority < priority) | |
3956 | break; | |
3957 | ||
3958 | skb = skb_dequeue(&chan->data_q); | |
3959 | ||
73d80deb | 3960 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3961 | bt_cb(skb)->force_active); |
04837f64 | 3962 | |
57d17d70 | 3963 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3964 | hdev->acl_last_tx = jiffies; |
3965 | ||
3966 | hdev->acl_cnt--; | |
73d80deb LAD |
3967 | chan->sent++; |
3968 | chan->conn->sent++; | |
1da177e4 LT |
3969 | } |
3970 | } | |
02b20f0b LAD |
3971 | |
3972 | if (cnt != hdev->acl_cnt) | |
3973 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3974 | } |
3975 | ||
6039aa73 | 3976 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3977 | { |
63d2bc1b | 3978 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3979 | struct hci_chan *chan; |
3980 | struct sk_buff *skb; | |
3981 | int quote; | |
bd1eb66b | 3982 | u8 type; |
b71d385a | 3983 | |
63d2bc1b | 3984 | __check_timeout(hdev, cnt); |
b71d385a | 3985 | |
bd1eb66b AE |
3986 | BT_DBG("%s", hdev->name); |
3987 | ||
3988 | if (hdev->dev_type == HCI_AMP) | |
3989 | type = AMP_LINK; | |
3990 | else | |
3991 | type = ACL_LINK; | |
3992 | ||
b71d385a | 3993 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3994 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3995 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3996 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3997 | int blocks; | |
3998 | ||
3999 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4000 | skb->len, skb->priority); |
b71d385a AE |
4001 | |
4002 | /* Stop if priority has changed */ | |
4003 | if (skb->priority < priority) | |
4004 | break; | |
4005 | ||
4006 | skb = skb_dequeue(&chan->data_q); | |
4007 | ||
4008 | blocks = __get_blocks(hdev, skb); | |
4009 | if (blocks > hdev->block_cnt) | |
4010 | return; | |
4011 | ||
4012 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4013 | bt_cb(skb)->force_active); |
b71d385a | 4014 | |
57d17d70 | 4015 | hci_send_frame(hdev, skb); |
b71d385a AE |
4016 | hdev->acl_last_tx = jiffies; |
4017 | ||
4018 | hdev->block_cnt -= blocks; | |
4019 | quote -= blocks; | |
4020 | ||
4021 | chan->sent += blocks; | |
4022 | chan->conn->sent += blocks; | |
4023 | } | |
4024 | } | |
4025 | ||
4026 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4027 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4028 | } |
4029 | ||
6039aa73 | 4030 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4031 | { |
4032 | BT_DBG("%s", hdev->name); | |
4033 | ||
bd1eb66b AE |
4034 | /* No ACL link over BR/EDR controller */ |
4035 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4036 | return; | |
4037 | ||
4038 | /* No AMP link over AMP controller */ | |
4039 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4040 | return; |
4041 | ||
4042 | switch (hdev->flow_ctl_mode) { | |
4043 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4044 | hci_sched_acl_pkt(hdev); | |
4045 | break; | |
4046 | ||
4047 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4048 | hci_sched_acl_blk(hdev); | |
4049 | break; | |
4050 | } | |
4051 | } | |
4052 | ||
1da177e4 | 4053 | /* Schedule SCO */ |
6039aa73 | 4054 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4055 | { |
4056 | struct hci_conn *conn; | |
4057 | struct sk_buff *skb; | |
4058 | int quote; | |
4059 | ||
4060 | BT_DBG("%s", hdev->name); | |
4061 | ||
52087a79 LAD |
4062 | if (!hci_conn_num(hdev, SCO_LINK)) |
4063 | return; | |
4064 | ||
1da177e4 LT |
4065 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4066 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4067 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4068 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4069 | |
4070 | conn->sent++; | |
4071 | if (conn->sent == ~0) | |
4072 | conn->sent = 0; | |
4073 | } | |
4074 | } | |
4075 | } | |
4076 | ||
6039aa73 | 4077 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4078 | { |
4079 | struct hci_conn *conn; | |
4080 | struct sk_buff *skb; | |
4081 | int quote; | |
4082 | ||
4083 | BT_DBG("%s", hdev->name); | |
4084 | ||
52087a79 LAD |
4085 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4086 | return; | |
4087 | ||
8fc9ced3 GP |
4088 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4089 | "e))) { | |
b6a0dc82 MH |
4090 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4091 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4092 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4093 | |
4094 | conn->sent++; | |
4095 | if (conn->sent == ~0) | |
4096 | conn->sent = 0; | |
4097 | } | |
4098 | } | |
4099 | } | |
4100 | ||
6039aa73 | 4101 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4102 | { |
73d80deb | 4103 | struct hci_chan *chan; |
6ed58ec5 | 4104 | struct sk_buff *skb; |
02b20f0b | 4105 | int quote, cnt, tmp; |
6ed58ec5 VT |
4106 | |
4107 | BT_DBG("%s", hdev->name); | |
4108 | ||
52087a79 LAD |
4109 | if (!hci_conn_num(hdev, LE_LINK)) |
4110 | return; | |
4111 | ||
d7a5a11d | 4112 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
4113 | /* LE tx timeout must be longer than maximum |
4114 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4115 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4116 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4117 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4118 | } |
4119 | ||
4120 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4121 | tmp = cnt; |
73d80deb | 4122 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4123 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4124 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4125 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4126 | skb->len, skb->priority); |
6ed58ec5 | 4127 | |
ec1cce24 LAD |
4128 | /* Stop if priority has changed */ |
4129 | if (skb->priority < priority) | |
4130 | break; | |
4131 | ||
4132 | skb = skb_dequeue(&chan->data_q); | |
4133 | ||
57d17d70 | 4134 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4135 | hdev->le_last_tx = jiffies; |
4136 | ||
4137 | cnt--; | |
73d80deb LAD |
4138 | chan->sent++; |
4139 | chan->conn->sent++; | |
6ed58ec5 VT |
4140 | } |
4141 | } | |
73d80deb | 4142 | |
6ed58ec5 VT |
4143 | if (hdev->le_pkts) |
4144 | hdev->le_cnt = cnt; | |
4145 | else | |
4146 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4147 | |
4148 | if (cnt != tmp) | |
4149 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4150 | } |
4151 | ||
3eff45ea | 4152 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4153 | { |
3eff45ea | 4154 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4155 | struct sk_buff *skb; |
4156 | ||
6ed58ec5 | 4157 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4158 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4159 | |
d7a5a11d | 4160 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4161 | /* Schedule queues and send stuff to HCI driver */ |
4162 | hci_sched_acl(hdev); | |
4163 | hci_sched_sco(hdev); | |
4164 | hci_sched_esco(hdev); | |
4165 | hci_sched_le(hdev); | |
4166 | } | |
6ed58ec5 | 4167 | |
1da177e4 LT |
4168 | /* Send next queued raw (unknown type) packet */ |
4169 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4170 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4171 | } |
4172 | ||
25985edc | 4173 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4174 | |
4175 | /* ACL data packet */ | |
6039aa73 | 4176 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4177 | { |
4178 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4179 | struct hci_conn *conn; | |
4180 | __u16 handle, flags; | |
4181 | ||
4182 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4183 | ||
4184 | handle = __le16_to_cpu(hdr->handle); | |
4185 | flags = hci_flags(handle); | |
4186 | handle = hci_handle(handle); | |
4187 | ||
f0e09510 | 4188 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4189 | handle, flags); |
1da177e4 LT |
4190 | |
4191 | hdev->stat.acl_rx++; | |
4192 | ||
4193 | hci_dev_lock(hdev); | |
4194 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4195 | hci_dev_unlock(hdev); | |
8e87d142 | 4196 | |
1da177e4 | 4197 | if (conn) { |
65983fc7 | 4198 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4199 | |
1da177e4 | 4200 | /* Send to upper protocol */ |
686ebf28 UF |
4201 | l2cap_recv_acldata(conn, skb, flags); |
4202 | return; | |
1da177e4 | 4203 | } else { |
8e87d142 | 4204 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4205 | hdev->name, handle); |
1da177e4 LT |
4206 | } |
4207 | ||
4208 | kfree_skb(skb); | |
4209 | } | |
4210 | ||
4211 | /* SCO data packet */ | |
6039aa73 | 4212 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4213 | { |
4214 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4215 | struct hci_conn *conn; | |
4216 | __u16 handle; | |
4217 | ||
4218 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4219 | ||
4220 | handle = __le16_to_cpu(hdr->handle); | |
4221 | ||
f0e09510 | 4222 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4223 | |
4224 | hdev->stat.sco_rx++; | |
4225 | ||
4226 | hci_dev_lock(hdev); | |
4227 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4228 | hci_dev_unlock(hdev); | |
4229 | ||
4230 | if (conn) { | |
1da177e4 | 4231 | /* Send to upper protocol */ |
686ebf28 UF |
4232 | sco_recv_scodata(conn, skb); |
4233 | return; | |
1da177e4 | 4234 | } else { |
8e87d142 | 4235 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4236 | hdev->name, handle); |
1da177e4 LT |
4237 | } |
4238 | ||
4239 | kfree_skb(skb); | |
4240 | } | |
4241 | ||
9238f36a JH |
4242 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4243 | { | |
4244 | struct sk_buff *skb; | |
4245 | ||
4246 | skb = skb_peek(&hdev->cmd_q); | |
4247 | if (!skb) | |
4248 | return true; | |
4249 | ||
49a6fe05 | 4250 | return bt_cb(skb)->req_start; |
9238f36a JH |
4251 | } |
4252 | ||
42c6b129 JH |
4253 | static void hci_resend_last(struct hci_dev *hdev) |
4254 | { | |
4255 | struct hci_command_hdr *sent; | |
4256 | struct sk_buff *skb; | |
4257 | u16 opcode; | |
4258 | ||
4259 | if (!hdev->sent_cmd) | |
4260 | return; | |
4261 | ||
4262 | sent = (void *) hdev->sent_cmd->data; | |
4263 | opcode = __le16_to_cpu(sent->opcode); | |
4264 | if (opcode == HCI_OP_RESET) | |
4265 | return; | |
4266 | ||
4267 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4268 | if (!skb) | |
4269 | return; | |
4270 | ||
4271 | skb_queue_head(&hdev->cmd_q, skb); | |
4272 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4273 | } | |
4274 | ||
9238f36a JH |
4275 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
4276 | { | |
4277 | hci_req_complete_t req_complete = NULL; | |
4278 | struct sk_buff *skb; | |
4279 | unsigned long flags; | |
4280 | ||
4281 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4282 | ||
42c6b129 JH |
4283 | /* If the completed command doesn't match the last one that was |
4284 | * sent we need to do special handling of it. | |
9238f36a | 4285 | */ |
42c6b129 JH |
4286 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4287 | /* Some CSR based controllers generate a spontaneous | |
4288 | * reset complete event during init and any pending | |
4289 | * command will never be completed. In such a case we | |
4290 | * need to resend whatever was the last sent | |
4291 | * command. | |
4292 | */ | |
4293 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4294 | hci_resend_last(hdev); | |
4295 | ||
9238f36a | 4296 | return; |
42c6b129 | 4297 | } |
9238f36a JH |
4298 | |
4299 | /* If the command succeeded and there's still more commands in | |
4300 | * this request the request is not yet complete. | |
4301 | */ | |
4302 | if (!status && !hci_req_is_complete(hdev)) | |
4303 | return; | |
4304 | ||
4305 | /* If this was the last command in a request the complete | |
4306 | * callback would be found in hdev->sent_cmd instead of the | |
4307 | * command queue (hdev->cmd_q). | |
4308 | */ | |
4309 | if (hdev->sent_cmd) { | |
49a6fe05 | 4310 | req_complete = bt_cb(hdev->sent_cmd)->req_complete; |
53e21fbc JH |
4311 | |
4312 | if (req_complete) { | |
4313 | /* We must set the complete callback to NULL to | |
4314 | * avoid calling the callback more than once if | |
4315 | * this function gets called again. | |
4316 | */ | |
49a6fe05 | 4317 | bt_cb(hdev->sent_cmd)->req_complete = NULL; |
53e21fbc | 4318 | |
9238f36a | 4319 | goto call_complete; |
53e21fbc | 4320 | } |
9238f36a JH |
4321 | } |
4322 | ||
4323 | /* Remove all pending commands belonging to this request */ | |
4324 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4325 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
49a6fe05 | 4326 | if (bt_cb(skb)->req_start) { |
9238f36a JH |
4327 | __skb_queue_head(&hdev->cmd_q, skb); |
4328 | break; | |
4329 | } | |
4330 | ||
49a6fe05 | 4331 | req_complete = bt_cb(skb)->req_complete; |
9238f36a JH |
4332 | kfree_skb(skb); |
4333 | } | |
4334 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4335 | ||
4336 | call_complete: | |
4337 | if (req_complete) | |
1904a853 | 4338 | req_complete(hdev, status, status ? opcode : HCI_OP_NOP); |
9238f36a JH |
4339 | } |
4340 | ||
b78752cc | 4341 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4342 | { |
b78752cc | 4343 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4344 | struct sk_buff *skb; |
4345 | ||
4346 | BT_DBG("%s", hdev->name); | |
4347 | ||
1da177e4 | 4348 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4349 | /* Send copy to monitor */ |
4350 | hci_send_to_monitor(hdev, skb); | |
4351 | ||
1da177e4 LT |
4352 | if (atomic_read(&hdev->promisc)) { |
4353 | /* Send copy to the sockets */ | |
470fe1b5 | 4354 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4355 | } |
4356 | ||
d7a5a11d | 4357 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4358 | kfree_skb(skb); |
4359 | continue; | |
4360 | } | |
4361 | ||
4362 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4363 | /* Don't process data packets in this states. */ | |
0d48d939 | 4364 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4365 | case HCI_ACLDATA_PKT: |
4366 | case HCI_SCODATA_PKT: | |
4367 | kfree_skb(skb); | |
4368 | continue; | |
3ff50b79 | 4369 | } |
1da177e4 LT |
4370 | } |
4371 | ||
4372 | /* Process frame */ | |
0d48d939 | 4373 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4374 | case HCI_EVENT_PKT: |
b78752cc | 4375 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4376 | hci_event_packet(hdev, skb); |
4377 | break; | |
4378 | ||
4379 | case HCI_ACLDATA_PKT: | |
4380 | BT_DBG("%s ACL data packet", hdev->name); | |
4381 | hci_acldata_packet(hdev, skb); | |
4382 | break; | |
4383 | ||
4384 | case HCI_SCODATA_PKT: | |
4385 | BT_DBG("%s SCO data packet", hdev->name); | |
4386 | hci_scodata_packet(hdev, skb); | |
4387 | break; | |
4388 | ||
4389 | default: | |
4390 | kfree_skb(skb); | |
4391 | break; | |
4392 | } | |
4393 | } | |
1da177e4 LT |
4394 | } |
4395 | ||
c347b765 | 4396 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4397 | { |
c347b765 | 4398 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4399 | struct sk_buff *skb; |
4400 | ||
2104786b AE |
4401 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4402 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4403 | |
1da177e4 | 4404 | /* Send queued commands */ |
5a08ecce AE |
4405 | if (atomic_read(&hdev->cmd_cnt)) { |
4406 | skb = skb_dequeue(&hdev->cmd_q); | |
4407 | if (!skb) | |
4408 | return; | |
4409 | ||
7585b97a | 4410 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4411 | |
a675d7f1 | 4412 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4413 | if (hdev->sent_cmd) { |
1da177e4 | 4414 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4415 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4416 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4417 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4418 | else |
65cc2b49 MH |
4419 | schedule_delayed_work(&hdev->cmd_timer, |
4420 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4421 | } else { |
4422 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4423 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4424 | } |
4425 | } | |
4426 | } |