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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 JH |
42 | #include "smp.h" |
43 | ||
b78752cc | 44 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 45 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 46 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 47 | |
1da177e4 LT |
48 | /* HCI device list */ |
49 | LIST_HEAD(hci_dev_list); | |
50 | DEFINE_RWLOCK(hci_dev_list_lock); | |
51 | ||
52 | /* HCI callback list */ | |
53 | LIST_HEAD(hci_cb_list); | |
54 | DEFINE_RWLOCK(hci_cb_list_lock); | |
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 | ||
42c6b129 | 393 | static void amp_init(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 | ||
403 | /* Read Local Supported Features */ | |
404 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
405 | ||
6bcbc489 | 406 | /* Read Local AMP Info */ |
42c6b129 | 407 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
408 | |
409 | /* Read Data Blk size */ | |
42c6b129 | 410 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 411 | |
f38ba941 MH |
412 | /* Read Flow Control Mode */ |
413 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
414 | ||
7528ca1c MH |
415 | /* Read Location Data */ |
416 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
417 | } |
418 | ||
42c6b129 | 419 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 420 | { |
42c6b129 | 421 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
422 | |
423 | BT_DBG("%s %ld", hdev->name, opt); | |
424 | ||
11778716 AE |
425 | /* Reset */ |
426 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 427 | hci_reset_req(req, 0); |
11778716 | 428 | |
e61ef499 AE |
429 | switch (hdev->dev_type) { |
430 | case HCI_BREDR: | |
42c6b129 | 431 | bredr_init(req); |
e61ef499 AE |
432 | break; |
433 | ||
434 | case HCI_AMP: | |
42c6b129 | 435 | amp_init(req); |
e61ef499 AE |
436 | break; |
437 | ||
438 | default: | |
439 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
440 | break; | |
441 | } | |
e61ef499 AE |
442 | } |
443 | ||
42c6b129 | 444 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 445 | { |
2177bab5 JH |
446 | __le16 param; |
447 | __u8 flt_type; | |
448 | ||
449 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 450 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
451 | |
452 | /* Read Class of Device */ | |
42c6b129 | 453 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
454 | |
455 | /* Read Local Name */ | |
42c6b129 | 456 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
457 | |
458 | /* Read Voice Setting */ | |
42c6b129 | 459 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 460 | |
b4cb9fb2 MH |
461 | /* Read Number of Supported IAC */ |
462 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
463 | ||
4b836f39 MH |
464 | /* Read Current IAC LAP */ |
465 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
466 | ||
2177bab5 JH |
467 | /* Clear Event Filters */ |
468 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 469 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
470 | |
471 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 472 | param = cpu_to_le16(0x7d00); |
42c6b129 | 473 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
474 | } |
475 | ||
42c6b129 | 476 | static void le_setup(struct hci_request *req) |
2177bab5 | 477 | { |
c73eee91 JH |
478 | struct hci_dev *hdev = req->hdev; |
479 | ||
2177bab5 | 480 | /* Read LE Buffer Size */ |
42c6b129 | 481 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
482 | |
483 | /* Read LE Local Supported Features */ | |
42c6b129 | 484 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 485 | |
747d3f03 MH |
486 | /* Read LE Supported States */ |
487 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
488 | ||
2177bab5 | 489 | /* Read LE White List Size */ |
42c6b129 | 490 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 491 | |
747d3f03 MH |
492 | /* Clear LE White List */ |
493 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
494 | |
495 | /* LE-only controllers have LE implicitly enabled */ | |
496 | if (!lmp_bredr_capable(hdev)) | |
497 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
498 | } |
499 | ||
42c6b129 | 500 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 501 | { |
42c6b129 JH |
502 | struct hci_dev *hdev = req->hdev; |
503 | ||
2177bab5 JH |
504 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
505 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
506 | * command otherwise. | |
507 | */ | |
508 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
509 | ||
510 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
511 | * any event mask for pre 1.2 devices. | |
512 | */ | |
513 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
514 | return; | |
515 | ||
516 | if (lmp_bredr_capable(hdev)) { | |
517 | events[4] |= 0x01; /* Flow Specification Complete */ | |
518 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
519 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
520 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
521 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
522 | } else { |
523 | /* Use a different default for LE-only devices */ | |
524 | memset(events, 0, sizeof(events)); | |
525 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
526 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
527 | events[1] |= 0x20; /* Command Complete */ | |
528 | events[1] |= 0x40; /* Command Status */ | |
529 | events[1] |= 0x80; /* Hardware Error */ | |
530 | events[2] |= 0x04; /* Number of Completed Packets */ | |
531 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
532 | |
533 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
534 | events[0] |= 0x80; /* Encryption Change */ | |
535 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
536 | } | |
2177bab5 JH |
537 | } |
538 | ||
539 | if (lmp_inq_rssi_capable(hdev)) | |
540 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
541 | ||
542 | if (lmp_sniffsubr_capable(hdev)) | |
543 | events[5] |= 0x20; /* Sniff Subrating */ | |
544 | ||
545 | if (lmp_pause_enc_capable(hdev)) | |
546 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
547 | ||
548 | if (lmp_ext_inq_capable(hdev)) | |
549 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
550 | ||
551 | if (lmp_no_flush_capable(hdev)) | |
552 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
553 | ||
554 | if (lmp_lsto_capable(hdev)) | |
555 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
556 | ||
557 | if (lmp_ssp_capable(hdev)) { | |
558 | events[6] |= 0x01; /* IO Capability Request */ | |
559 | events[6] |= 0x02; /* IO Capability Response */ | |
560 | events[6] |= 0x04; /* User Confirmation Request */ | |
561 | events[6] |= 0x08; /* User Passkey Request */ | |
562 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
563 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
564 | events[7] |= 0x04; /* User Passkey Notification */ | |
565 | events[7] |= 0x08; /* Keypress Notification */ | |
566 | events[7] |= 0x10; /* Remote Host Supported | |
567 | * Features Notification | |
568 | */ | |
569 | } | |
570 | ||
571 | if (lmp_le_capable(hdev)) | |
572 | events[7] |= 0x20; /* LE Meta-Event */ | |
573 | ||
42c6b129 | 574 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
575 | } |
576 | ||
42c6b129 | 577 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 578 | { |
42c6b129 JH |
579 | struct hci_dev *hdev = req->hdev; |
580 | ||
2177bab5 | 581 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 582 | bredr_setup(req); |
56f87901 JH |
583 | else |
584 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
585 | |
586 | if (lmp_le_capable(hdev)) | |
42c6b129 | 587 | le_setup(req); |
2177bab5 | 588 | |
0f3adeae MH |
589 | /* All Bluetooth 1.2 and later controllers should support the |
590 | * HCI command for reading the local supported commands. | |
591 | * | |
592 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
593 | * but do not have support for this command. If that is the case, | |
594 | * the driver can quirk the behavior and skip reading the local | |
595 | * supported commands. | |
3f8e2d75 | 596 | */ |
0f3adeae MH |
597 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
598 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 599 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
600 | |
601 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
602 | /* When SSP is available, then the host features page |
603 | * should also be available as well. However some | |
604 | * controllers list the max_page as 0 as long as SSP | |
605 | * has not been enabled. To achieve proper debugging | |
606 | * output, force the minimum max_page to 1 at least. | |
607 | */ | |
608 | hdev->max_page = 0x01; | |
609 | ||
2177bab5 JH |
610 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
611 | u8 mode = 0x01; | |
574ea3c7 | 612 | |
42c6b129 JH |
613 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
614 | sizeof(mode), &mode); | |
2177bab5 JH |
615 | } else { |
616 | struct hci_cp_write_eir cp; | |
617 | ||
618 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
619 | memset(&cp, 0, sizeof(cp)); | |
620 | ||
42c6b129 | 621 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
622 | } |
623 | } | |
624 | ||
043ec9bf MH |
625 | if (lmp_inq_rssi_capable(hdev) || |
626 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
627 | u8 mode; |
628 | ||
629 | /* If Extended Inquiry Result events are supported, then | |
630 | * they are clearly preferred over Inquiry Result with RSSI | |
631 | * events. | |
632 | */ | |
633 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
634 | ||
635 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
636 | } | |
2177bab5 JH |
637 | |
638 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 639 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
640 | |
641 | if (lmp_ext_feat_capable(hdev)) { | |
642 | struct hci_cp_read_local_ext_features cp; | |
643 | ||
644 | cp.page = 0x01; | |
42c6b129 JH |
645 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
646 | sizeof(cp), &cp); | |
2177bab5 JH |
647 | } |
648 | ||
649 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
650 | u8 enable = 1; | |
42c6b129 JH |
651 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
652 | &enable); | |
2177bab5 JH |
653 | } |
654 | } | |
655 | ||
42c6b129 | 656 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 657 | { |
42c6b129 | 658 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
659 | struct hci_cp_write_def_link_policy cp; |
660 | u16 link_policy = 0; | |
661 | ||
662 | if (lmp_rswitch_capable(hdev)) | |
663 | link_policy |= HCI_LP_RSWITCH; | |
664 | if (lmp_hold_capable(hdev)) | |
665 | link_policy |= HCI_LP_HOLD; | |
666 | if (lmp_sniff_capable(hdev)) | |
667 | link_policy |= HCI_LP_SNIFF; | |
668 | if (lmp_park_capable(hdev)) | |
669 | link_policy |= HCI_LP_PARK; | |
670 | ||
671 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 672 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
673 | } |
674 | ||
42c6b129 | 675 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 676 | { |
42c6b129 | 677 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
678 | struct hci_cp_write_le_host_supported cp; |
679 | ||
c73eee91 JH |
680 | /* LE-only devices do not support explicit enablement */ |
681 | if (!lmp_bredr_capable(hdev)) | |
682 | return; | |
683 | ||
2177bab5 JH |
684 | memset(&cp, 0, sizeof(cp)); |
685 | ||
686 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
687 | cp.le = 0x01; | |
32226e4f | 688 | cp.simul = 0x00; |
2177bab5 JH |
689 | } |
690 | ||
691 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
692 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
693 | &cp); | |
2177bab5 JH |
694 | } |
695 | ||
d62e6d67 JH |
696 | static void hci_set_event_mask_page_2(struct hci_request *req) |
697 | { | |
698 | struct hci_dev *hdev = req->hdev; | |
699 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
700 | ||
701 | /* If Connectionless Slave Broadcast master role is supported | |
702 | * enable all necessary events for it. | |
703 | */ | |
53b834d2 | 704 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
705 | events[1] |= 0x40; /* Triggered Clock Capture */ |
706 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
707 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
708 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
709 | } | |
710 | ||
711 | /* If Connectionless Slave Broadcast slave role is supported | |
712 | * enable all necessary events for it. | |
713 | */ | |
53b834d2 | 714 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
715 | events[2] |= 0x01; /* Synchronization Train Received */ |
716 | events[2] |= 0x02; /* CSB Receive */ | |
717 | events[2] |= 0x04; /* CSB Timeout */ | |
718 | events[2] |= 0x08; /* Truncated Page Complete */ | |
719 | } | |
720 | ||
40c59fcb | 721 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 722 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
723 | events[2] |= 0x80; |
724 | ||
d62e6d67 JH |
725 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
726 | } | |
727 | ||
42c6b129 | 728 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 729 | { |
42c6b129 | 730 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 731 | u8 p; |
42c6b129 | 732 | |
0da71f1b MH |
733 | hci_setup_event_mask(req); |
734 | ||
48ce62c4 MH |
735 | if (hdev->commands[6] & 0x20) { |
736 | struct hci_cp_read_stored_link_key cp; | |
737 | ||
738 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
739 | cp.read_all = 0x01; | |
740 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
741 | } | |
742 | ||
2177bab5 | 743 | if (hdev->commands[5] & 0x10) |
42c6b129 | 744 | hci_setup_link_policy(req); |
2177bab5 | 745 | |
417287de MH |
746 | if (hdev->commands[8] & 0x01) |
747 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
748 | ||
749 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
750 | * support the Read Page Scan Type command. Check support for | |
751 | * this command in the bit mask of supported commands. | |
752 | */ | |
753 | if (hdev->commands[13] & 0x01) | |
754 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
755 | ||
9193c6e8 AG |
756 | if (lmp_le_capable(hdev)) { |
757 | u8 events[8]; | |
758 | ||
759 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
760 | events[0] = 0x0f; |
761 | ||
762 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
763 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
764 | |
765 | /* If controller supports the Connection Parameters Request | |
766 | * Link Layer Procedure, enable the corresponding event. | |
767 | */ | |
768 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
769 | events[0] |= 0x20; /* LE Remote Connection | |
770 | * Parameter Request | |
771 | */ | |
772 | ||
a9f6068e MH |
773 | /* If the controller supports the Data Length Extension |
774 | * feature, enable the corresponding event. | |
775 | */ | |
776 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
777 | events[0] |= 0x40; /* LE Data Length Change */ | |
778 | ||
4b71bba4 MH |
779 | /* If the controller supports Extended Scanner Filter |
780 | * Policies, enable the correspondig event. | |
781 | */ | |
782 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
783 | events[1] |= 0x04; /* LE Direct Advertising | |
784 | * Report | |
785 | */ | |
786 | ||
5a34bd5f MH |
787 | /* If the controller supports the LE Read Local P-256 |
788 | * Public Key command, enable the corresponding event. | |
789 | */ | |
790 | if (hdev->commands[34] & 0x02) | |
791 | events[0] |= 0x80; /* LE Read Local P-256 | |
792 | * Public Key Complete | |
793 | */ | |
794 | ||
795 | /* If the controller supports the LE Generate DHKey | |
796 | * command, enable the corresponding event. | |
797 | */ | |
798 | if (hdev->commands[34] & 0x04) | |
799 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
800 | ||
9193c6e8 AG |
801 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
802 | events); | |
803 | ||
15a49cca MH |
804 | if (hdev->commands[25] & 0x40) { |
805 | /* Read LE Advertising Channel TX Power */ | |
806 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
807 | } | |
808 | ||
a9f6068e MH |
809 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
810 | /* Read LE Maximum Data Length */ | |
811 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
812 | ||
813 | /* Read LE Suggested Default Data Length */ | |
814 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
815 | } | |
816 | ||
42c6b129 | 817 | hci_set_le_support(req); |
9193c6e8 | 818 | } |
d2c5d77f JH |
819 | |
820 | /* Read features beyond page 1 if available */ | |
821 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
822 | struct hci_cp_read_local_ext_features cp; | |
823 | ||
824 | cp.page = p; | |
825 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
826 | sizeof(cp), &cp); | |
827 | } | |
2177bab5 JH |
828 | } |
829 | ||
5d4e7e8d JH |
830 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
831 | { | |
832 | struct hci_dev *hdev = req->hdev; | |
833 | ||
36f260ce MH |
834 | /* Some Broadcom based Bluetooth controllers do not support the |
835 | * Delete Stored Link Key command. They are clearly indicating its | |
836 | * absence in the bit mask of supported commands. | |
837 | * | |
838 | * Check the supported commands and only if the the command is marked | |
839 | * as supported send it. If not supported assume that the controller | |
840 | * does not have actual support for stored link keys which makes this | |
841 | * command redundant anyway. | |
842 | * | |
843 | * Some controllers indicate that they support handling deleting | |
844 | * stored link keys, but they don't. The quirk lets a driver | |
845 | * just disable this command. | |
846 | */ | |
847 | if (hdev->commands[6] & 0x80 && | |
848 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
849 | struct hci_cp_delete_stored_link_key cp; | |
850 | ||
851 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
852 | cp.delete_all = 0x01; | |
853 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
854 | sizeof(cp), &cp); | |
855 | } | |
856 | ||
d62e6d67 JH |
857 | /* Set event mask page 2 if the HCI command for it is supported */ |
858 | if (hdev->commands[22] & 0x04) | |
859 | hci_set_event_mask_page_2(req); | |
860 | ||
109e3191 MH |
861 | /* Read local codec list if the HCI command is supported */ |
862 | if (hdev->commands[29] & 0x20) | |
863 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
864 | ||
f4fe73ed MH |
865 | /* Get MWS transport configuration if the HCI command is supported */ |
866 | if (hdev->commands[30] & 0x08) | |
867 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
868 | ||
5d4e7e8d | 869 | /* Check for Synchronization Train support */ |
53b834d2 | 870 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 871 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
872 | |
873 | /* Enable Secure Connections if supported and configured */ | |
574ea3c7 MH |
874 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && |
875 | bredr_sc_enabled(hdev)) { | |
a6d0d690 | 876 | u8 support = 0x01; |
574ea3c7 | 877 | |
a6d0d690 MH |
878 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
879 | sizeof(support), &support); | |
880 | } | |
5d4e7e8d JH |
881 | } |
882 | ||
2177bab5 JH |
883 | static int __hci_init(struct hci_dev *hdev) |
884 | { | |
885 | int err; | |
886 | ||
887 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
888 | if (err < 0) | |
889 | return err; | |
890 | ||
4b4148e9 MH |
891 | /* The Device Under Test (DUT) mode is special and available for |
892 | * all controller types. So just create it early on. | |
893 | */ | |
894 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
895 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
896 | &dut_mode_fops); | |
897 | } | |
898 | ||
2177bab5 JH |
899 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
900 | * BR/EDR/LE type controllers. AMP controllers only need the | |
901 | * first stage init. | |
902 | */ | |
903 | if (hdev->dev_type != HCI_BREDR) | |
904 | return 0; | |
905 | ||
906 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
907 | if (err < 0) | |
908 | return err; | |
909 | ||
5d4e7e8d JH |
910 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
911 | if (err < 0) | |
912 | return err; | |
913 | ||
baf27f6e MH |
914 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
915 | if (err < 0) | |
916 | return err; | |
917 | ||
ec6cef9c MH |
918 | /* This function is only called when the controller is actually in |
919 | * configured state. When the controller is marked as unconfigured, | |
920 | * this initialization procedure is not run. | |
921 | * | |
922 | * It means that it is possible that a controller runs through its | |
923 | * setup phase and then discovers missing settings. If that is the | |
924 | * case, then this function will not be called. It then will only | |
925 | * be called during the config phase. | |
926 | * | |
927 | * So only when in setup phase or config phase, create the debugfs | |
928 | * entries and register the SMP channels. | |
baf27f6e | 929 | */ |
ec6cef9c MH |
930 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
931 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) | |
baf27f6e MH |
932 | return 0; |
933 | ||
60c5f5fb MH |
934 | hci_debugfs_create_common(hdev); |
935 | ||
71c3b60e | 936 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 937 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 938 | |
162a3bac | 939 | if (lmp_le_capable(hdev)) |
60c5f5fb | 940 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 941 | |
baf27f6e | 942 | return 0; |
2177bab5 JH |
943 | } |
944 | ||
0ebca7d6 MH |
945 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
946 | { | |
947 | struct hci_dev *hdev = req->hdev; | |
948 | ||
949 | BT_DBG("%s %ld", hdev->name, opt); | |
950 | ||
951 | /* Reset */ | |
952 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
953 | hci_reset_req(req, 0); | |
954 | ||
955 | /* Read Local Version */ | |
956 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
957 | ||
958 | /* Read BD Address */ | |
959 | if (hdev->set_bdaddr) | |
960 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
961 | } | |
962 | ||
963 | static int __hci_unconf_init(struct hci_dev *hdev) | |
964 | { | |
965 | int err; | |
966 | ||
cc78b44b MH |
967 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
968 | return 0; | |
969 | ||
0ebca7d6 MH |
970 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
971 | if (err < 0) | |
972 | return err; | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
42c6b129 | 977 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
978 | { |
979 | __u8 scan = opt; | |
980 | ||
42c6b129 | 981 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
982 | |
983 | /* Inquiry and Page scans */ | |
42c6b129 | 984 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
985 | } |
986 | ||
42c6b129 | 987 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
988 | { |
989 | __u8 auth = opt; | |
990 | ||
42c6b129 | 991 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
992 | |
993 | /* Authentication */ | |
42c6b129 | 994 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
995 | } |
996 | ||
42c6b129 | 997 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
998 | { |
999 | __u8 encrypt = opt; | |
1000 | ||
42c6b129 | 1001 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1002 | |
e4e8e37c | 1003 | /* Encryption */ |
42c6b129 | 1004 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1005 | } |
1006 | ||
42c6b129 | 1007 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1008 | { |
1009 | __le16 policy = cpu_to_le16(opt); | |
1010 | ||
42c6b129 | 1011 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1012 | |
1013 | /* Default link policy */ | |
42c6b129 | 1014 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1015 | } |
1016 | ||
8e87d142 | 1017 | /* Get HCI device by index. |
1da177e4 LT |
1018 | * Device is held on return. */ |
1019 | struct hci_dev *hci_dev_get(int index) | |
1020 | { | |
8035ded4 | 1021 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1022 | |
1023 | BT_DBG("%d", index); | |
1024 | ||
1025 | if (index < 0) | |
1026 | return NULL; | |
1027 | ||
1028 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1029 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1030 | if (d->id == index) { |
1031 | hdev = hci_dev_hold(d); | |
1032 | break; | |
1033 | } | |
1034 | } | |
1035 | read_unlock(&hci_dev_list_lock); | |
1036 | return hdev; | |
1037 | } | |
1da177e4 LT |
1038 | |
1039 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1040 | |
30dc78e1 JH |
1041 | bool hci_discovery_active(struct hci_dev *hdev) |
1042 | { | |
1043 | struct discovery_state *discov = &hdev->discovery; | |
1044 | ||
6fbe195d | 1045 | switch (discov->state) { |
343f935b | 1046 | case DISCOVERY_FINDING: |
6fbe195d | 1047 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1048 | return true; |
1049 | ||
6fbe195d AG |
1050 | default: |
1051 | return false; | |
1052 | } | |
30dc78e1 JH |
1053 | } |
1054 | ||
ff9ef578 JH |
1055 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1056 | { | |
bb3e0a33 JH |
1057 | int old_state = hdev->discovery.state; |
1058 | ||
ff9ef578 JH |
1059 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1060 | ||
bb3e0a33 | 1061 | if (old_state == state) |
ff9ef578 JH |
1062 | return; |
1063 | ||
bb3e0a33 JH |
1064 | hdev->discovery.state = state; |
1065 | ||
ff9ef578 JH |
1066 | switch (state) { |
1067 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1068 | hci_update_background_scan(hdev); |
1069 | ||
bb3e0a33 | 1070 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1071 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1072 | break; |
1073 | case DISCOVERY_STARTING: | |
1074 | break; | |
343f935b | 1075 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1076 | mgmt_discovering(hdev, 1); |
1077 | break; | |
30dc78e1 JH |
1078 | case DISCOVERY_RESOLVING: |
1079 | break; | |
ff9ef578 JH |
1080 | case DISCOVERY_STOPPING: |
1081 | break; | |
1082 | } | |
ff9ef578 JH |
1083 | } |
1084 | ||
1f9b9a5d | 1085 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1086 | { |
30883512 | 1087 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1088 | struct inquiry_entry *p, *n; |
1da177e4 | 1089 | |
561aafbc JH |
1090 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1091 | list_del(&p->all); | |
b57c1a56 | 1092 | kfree(p); |
1da177e4 | 1093 | } |
561aafbc JH |
1094 | |
1095 | INIT_LIST_HEAD(&cache->unknown); | |
1096 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1097 | } |
1098 | ||
a8c5fb1a GP |
1099 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1100 | bdaddr_t *bdaddr) | |
1da177e4 | 1101 | { |
30883512 | 1102 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1103 | struct inquiry_entry *e; |
1104 | ||
6ed93dc6 | 1105 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1106 | |
561aafbc JH |
1107 | list_for_each_entry(e, &cache->all, all) { |
1108 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1109 | return e; | |
1110 | } | |
1111 | ||
1112 | return NULL; | |
1113 | } | |
1114 | ||
1115 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1116 | bdaddr_t *bdaddr) |
561aafbc | 1117 | { |
30883512 | 1118 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1119 | struct inquiry_entry *e; |
1120 | ||
6ed93dc6 | 1121 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1122 | |
1123 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1124 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1125 | return e; |
1126 | } | |
1127 | ||
1128 | return NULL; | |
1da177e4 LT |
1129 | } |
1130 | ||
30dc78e1 | 1131 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1132 | bdaddr_t *bdaddr, |
1133 | int state) | |
30dc78e1 JH |
1134 | { |
1135 | struct discovery_state *cache = &hdev->discovery; | |
1136 | struct inquiry_entry *e; | |
1137 | ||
6ed93dc6 | 1138 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1139 | |
1140 | list_for_each_entry(e, &cache->resolve, list) { | |
1141 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1142 | return e; | |
1143 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1144 | return e; | |
1145 | } | |
1146 | ||
1147 | return NULL; | |
1148 | } | |
1149 | ||
a3d4e20a | 1150 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1151 | struct inquiry_entry *ie) |
a3d4e20a JH |
1152 | { |
1153 | struct discovery_state *cache = &hdev->discovery; | |
1154 | struct list_head *pos = &cache->resolve; | |
1155 | struct inquiry_entry *p; | |
1156 | ||
1157 | list_del(&ie->list); | |
1158 | ||
1159 | list_for_each_entry(p, &cache->resolve, list) { | |
1160 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1161 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1162 | break; |
1163 | pos = &p->list; | |
1164 | } | |
1165 | ||
1166 | list_add(&ie->list, pos); | |
1167 | } | |
1168 | ||
af58925c MH |
1169 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1170 | bool name_known) | |
1da177e4 | 1171 | { |
30883512 | 1172 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1173 | struct inquiry_entry *ie; |
af58925c | 1174 | u32 flags = 0; |
1da177e4 | 1175 | |
6ed93dc6 | 1176 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1177 | |
6928a924 | 1178 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1179 | |
af58925c MH |
1180 | if (!data->ssp_mode) |
1181 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1182 | |
70f23020 | 1183 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1184 | if (ie) { |
af58925c MH |
1185 | if (!ie->data.ssp_mode) |
1186 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1187 | |
a3d4e20a | 1188 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1189 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1190 | ie->data.rssi = data->rssi; |
1191 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1192 | } | |
1193 | ||
561aafbc | 1194 | goto update; |
a3d4e20a | 1195 | } |
561aafbc JH |
1196 | |
1197 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1198 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1199 | if (!ie) { |
1200 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1201 | goto done; | |
1202 | } | |
561aafbc JH |
1203 | |
1204 | list_add(&ie->all, &cache->all); | |
1205 | ||
1206 | if (name_known) { | |
1207 | ie->name_state = NAME_KNOWN; | |
1208 | } else { | |
1209 | ie->name_state = NAME_NOT_KNOWN; | |
1210 | list_add(&ie->list, &cache->unknown); | |
1211 | } | |
70f23020 | 1212 | |
561aafbc JH |
1213 | update: |
1214 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1215 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1216 | ie->name_state = NAME_KNOWN; |
1217 | list_del(&ie->list); | |
1da177e4 LT |
1218 | } |
1219 | ||
70f23020 AE |
1220 | memcpy(&ie->data, data, sizeof(*data)); |
1221 | ie->timestamp = jiffies; | |
1da177e4 | 1222 | cache->timestamp = jiffies; |
3175405b JH |
1223 | |
1224 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1225 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1226 | |
af58925c MH |
1227 | done: |
1228 | return flags; | |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1232 | { | |
30883512 | 1233 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1234 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1235 | struct inquiry_entry *e; | |
1236 | int copied = 0; | |
1237 | ||
561aafbc | 1238 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1239 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1240 | |
1241 | if (copied >= num) | |
1242 | break; | |
1243 | ||
1da177e4 LT |
1244 | bacpy(&info->bdaddr, &data->bdaddr); |
1245 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1246 | info->pscan_period_mode = data->pscan_period_mode; | |
1247 | info->pscan_mode = data->pscan_mode; | |
1248 | memcpy(info->dev_class, data->dev_class, 3); | |
1249 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1250 | |
1da177e4 | 1251 | info++; |
b57c1a56 | 1252 | copied++; |
1da177e4 LT |
1253 | } |
1254 | ||
1255 | BT_DBG("cache %p, copied %d", cache, copied); | |
1256 | return copied; | |
1257 | } | |
1258 | ||
42c6b129 | 1259 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1260 | { |
1261 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1262 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1263 | struct hci_cp_inquiry cp; |
1264 | ||
1265 | BT_DBG("%s", hdev->name); | |
1266 | ||
1267 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1268 | return; | |
1269 | ||
1270 | /* Start Inquiry */ | |
1271 | memcpy(&cp.lap, &ir->lap, 3); | |
1272 | cp.length = ir->length; | |
1273 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1274 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1275 | } |
1276 | ||
1277 | int hci_inquiry(void __user *arg) | |
1278 | { | |
1279 | __u8 __user *ptr = arg; | |
1280 | struct hci_inquiry_req ir; | |
1281 | struct hci_dev *hdev; | |
1282 | int err = 0, do_inquiry = 0, max_rsp; | |
1283 | long timeo; | |
1284 | __u8 *buf; | |
1285 | ||
1286 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1287 | return -EFAULT; | |
1288 | ||
5a08ecce AE |
1289 | hdev = hci_dev_get(ir.dev_id); |
1290 | if (!hdev) | |
1da177e4 LT |
1291 | return -ENODEV; |
1292 | ||
0736cfa8 MH |
1293 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1294 | err = -EBUSY; | |
1295 | goto done; | |
1296 | } | |
1297 | ||
4a964404 | 1298 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
1299 | err = -EOPNOTSUPP; |
1300 | goto done; | |
1301 | } | |
1302 | ||
5b69bef5 MH |
1303 | if (hdev->dev_type != HCI_BREDR) { |
1304 | err = -EOPNOTSUPP; | |
1305 | goto done; | |
1306 | } | |
1307 | ||
56f87901 JH |
1308 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1309 | err = -EOPNOTSUPP; | |
1310 | goto done; | |
1311 | } | |
1312 | ||
09fd0de5 | 1313 | hci_dev_lock(hdev); |
8e87d142 | 1314 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1315 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1316 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1317 | do_inquiry = 1; |
1318 | } | |
09fd0de5 | 1319 | hci_dev_unlock(hdev); |
1da177e4 | 1320 | |
04837f64 | 1321 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1322 | |
1323 | if (do_inquiry) { | |
01178cd4 JH |
1324 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1325 | timeo); | |
70f23020 AE |
1326 | if (err < 0) |
1327 | goto done; | |
3e13fa1e AG |
1328 | |
1329 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1330 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1331 | */ | |
74316201 | 1332 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1333 | TASK_INTERRUPTIBLE)) |
1334 | return -EINTR; | |
70f23020 | 1335 | } |
1da177e4 | 1336 | |
8fc9ced3 GP |
1337 | /* for unlimited number of responses we will use buffer with |
1338 | * 255 entries | |
1339 | */ | |
1da177e4 LT |
1340 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1341 | ||
1342 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1343 | * copy it to the user space. | |
1344 | */ | |
01df8c31 | 1345 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1346 | if (!buf) { |
1da177e4 LT |
1347 | err = -ENOMEM; |
1348 | goto done; | |
1349 | } | |
1350 | ||
09fd0de5 | 1351 | hci_dev_lock(hdev); |
1da177e4 | 1352 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1353 | hci_dev_unlock(hdev); |
1da177e4 LT |
1354 | |
1355 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1356 | ||
1357 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1358 | ptr += sizeof(ir); | |
1359 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1360 | ir.num_rsp)) |
1da177e4 | 1361 | err = -EFAULT; |
8e87d142 | 1362 | } else |
1da177e4 LT |
1363 | err = -EFAULT; |
1364 | ||
1365 | kfree(buf); | |
1366 | ||
1367 | done: | |
1368 | hci_dev_put(hdev); | |
1369 | return err; | |
1370 | } | |
1371 | ||
cbed0ca1 | 1372 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1373 | { |
1da177e4 LT |
1374 | int ret = 0; |
1375 | ||
1da177e4 LT |
1376 | BT_DBG("%s %p", hdev->name, hdev); |
1377 | ||
1378 | hci_req_lock(hdev); | |
1379 | ||
94324962 JH |
1380 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1381 | ret = -ENODEV; | |
1382 | goto done; | |
1383 | } | |
1384 | ||
d603b76b MH |
1385 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
1386 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
a5c8f270 MH |
1387 | /* Check for rfkill but allow the HCI setup stage to |
1388 | * proceed (which in itself doesn't cause any RF activity). | |
1389 | */ | |
1390 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
1391 | ret = -ERFKILL; | |
1392 | goto done; | |
1393 | } | |
1394 | ||
1395 | /* Check for valid public address or a configured static | |
1396 | * random adddress, but let the HCI setup proceed to | |
1397 | * be able to determine if there is a public address | |
1398 | * or not. | |
1399 | * | |
c6beca0e MH |
1400 | * In case of user channel usage, it is not important |
1401 | * if a public address or static random address is | |
1402 | * available. | |
1403 | * | |
a5c8f270 MH |
1404 | * This check is only valid for BR/EDR controllers |
1405 | * since AMP controllers do not have an address. | |
1406 | */ | |
c6beca0e MH |
1407 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1408 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
1409 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1410 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1411 | ret = -EADDRNOTAVAIL; | |
1412 | goto done; | |
1413 | } | |
611b30f7 MH |
1414 | } |
1415 | ||
1da177e4 LT |
1416 | if (test_bit(HCI_UP, &hdev->flags)) { |
1417 | ret = -EALREADY; | |
1418 | goto done; | |
1419 | } | |
1420 | ||
1da177e4 LT |
1421 | if (hdev->open(hdev)) { |
1422 | ret = -EIO; | |
1423 | goto done; | |
1424 | } | |
1425 | ||
f41c70c4 MH |
1426 | atomic_set(&hdev->cmd_cnt, 1); |
1427 | set_bit(HCI_INIT, &hdev->flags); | |
1428 | ||
af202f84 MH |
1429 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1430 | if (hdev->setup) | |
1431 | ret = hdev->setup(hdev); | |
f41c70c4 | 1432 | |
af202f84 MH |
1433 | /* The transport driver can set these quirks before |
1434 | * creating the HCI device or in its setup callback. | |
1435 | * | |
1436 | * In case any of them is set, the controller has to | |
1437 | * start up as unconfigured. | |
1438 | */ | |
eb1904f4 MH |
1439 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1440 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
89bc22d2 | 1441 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
f41c70c4 | 1442 | |
0ebca7d6 MH |
1443 | /* For an unconfigured controller it is required to |
1444 | * read at least the version information provided by | |
1445 | * the Read Local Version Information command. | |
1446 | * | |
1447 | * If the set_bdaddr driver callback is provided, then | |
1448 | * also the original Bluetooth public device address | |
1449 | * will be read using the Read BD Address command. | |
1450 | */ | |
1451 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
1452 | ret = __hci_unconf_init(hdev); | |
89bc22d2 MH |
1453 | } |
1454 | ||
9713c17b MH |
1455 | if (test_bit(HCI_CONFIG, &hdev->dev_flags)) { |
1456 | /* If public address change is configured, ensure that | |
1457 | * the address gets programmed. If the driver does not | |
1458 | * support changing the public address, fail the power | |
1459 | * on procedure. | |
1460 | */ | |
1461 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1462 | hdev->set_bdaddr) | |
24c457e2 MH |
1463 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1464 | else | |
1465 | ret = -EADDRNOTAVAIL; | |
1466 | } | |
1467 | ||
f41c70c4 | 1468 | if (!ret) { |
4a964404 | 1469 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 1470 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
f41c70c4 | 1471 | ret = __hci_init(hdev); |
1da177e4 LT |
1472 | } |
1473 | ||
f41c70c4 MH |
1474 | clear_bit(HCI_INIT, &hdev->flags); |
1475 | ||
1da177e4 LT |
1476 | if (!ret) { |
1477 | hci_dev_hold(hdev); | |
d6bfd59c | 1478 | set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); |
1da177e4 LT |
1479 | set_bit(HCI_UP, &hdev->flags); |
1480 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 1481 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
d603b76b | 1482 | !test_bit(HCI_CONFIG, &hdev->dev_flags) && |
4a964404 | 1483 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 1484 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 1485 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1486 | hci_dev_lock(hdev); |
744cf19e | 1487 | mgmt_powered(hdev, 1); |
09fd0de5 | 1488 | hci_dev_unlock(hdev); |
56e5cb86 | 1489 | } |
8e87d142 | 1490 | } else { |
1da177e4 | 1491 | /* Init failed, cleanup */ |
3eff45ea | 1492 | flush_work(&hdev->tx_work); |
c347b765 | 1493 | flush_work(&hdev->cmd_work); |
b78752cc | 1494 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1495 | |
1496 | skb_queue_purge(&hdev->cmd_q); | |
1497 | skb_queue_purge(&hdev->rx_q); | |
1498 | ||
1499 | if (hdev->flush) | |
1500 | hdev->flush(hdev); | |
1501 | ||
1502 | if (hdev->sent_cmd) { | |
1503 | kfree_skb(hdev->sent_cmd); | |
1504 | hdev->sent_cmd = NULL; | |
1505 | } | |
1506 | ||
1507 | hdev->close(hdev); | |
fee746b0 | 1508 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1509 | } |
1510 | ||
1511 | done: | |
1512 | hci_req_unlock(hdev); | |
1da177e4 LT |
1513 | return ret; |
1514 | } | |
1515 | ||
cbed0ca1 JH |
1516 | /* ---- HCI ioctl helpers ---- */ |
1517 | ||
1518 | int hci_dev_open(__u16 dev) | |
1519 | { | |
1520 | struct hci_dev *hdev; | |
1521 | int err; | |
1522 | ||
1523 | hdev = hci_dev_get(dev); | |
1524 | if (!hdev) | |
1525 | return -ENODEV; | |
1526 | ||
4a964404 | 1527 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1528 | * up as user channel. Trying to bring them up as normal devices |
1529 | * will result into a failure. Only user channel operation is | |
1530 | * possible. | |
1531 | * | |
1532 | * When this function is called for a user channel, the flag | |
1533 | * HCI_USER_CHANNEL will be set first before attempting to | |
1534 | * open the device. | |
1535 | */ | |
4a964404 | 1536 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
fee746b0 MH |
1537 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1538 | err = -EOPNOTSUPP; | |
1539 | goto done; | |
1540 | } | |
1541 | ||
e1d08f40 JH |
1542 | /* We need to ensure that no other power on/off work is pending |
1543 | * before proceeding to call hci_dev_do_open. This is | |
1544 | * particularly important if the setup procedure has not yet | |
1545 | * completed. | |
1546 | */ | |
1547 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1548 | cancel_delayed_work(&hdev->power_off); | |
1549 | ||
a5c8f270 MH |
1550 | /* After this call it is guaranteed that the setup procedure |
1551 | * has finished. This means that error conditions like RFKILL | |
1552 | * or no valid public or static random address apply. | |
1553 | */ | |
e1d08f40 JH |
1554 | flush_workqueue(hdev->req_workqueue); |
1555 | ||
12aa4f0a | 1556 | /* For controllers not using the management interface and that |
b6ae8457 | 1557 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1558 | * so that pairing works for them. Once the management interface |
1559 | * is in use this bit will be cleared again and userspace has | |
1560 | * to explicitly enable it. | |
1561 | */ | |
1562 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && | |
1563 | !test_bit(HCI_MGMT, &hdev->dev_flags)) | |
b6ae8457 | 1564 | set_bit(HCI_BONDABLE, &hdev->dev_flags); |
12aa4f0a | 1565 | |
cbed0ca1 JH |
1566 | err = hci_dev_do_open(hdev); |
1567 | ||
fee746b0 | 1568 | done: |
cbed0ca1 | 1569 | hci_dev_put(hdev); |
cbed0ca1 JH |
1570 | return err; |
1571 | } | |
1572 | ||
d7347f3c JH |
1573 | /* This function requires the caller holds hdev->lock */ |
1574 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1575 | { | |
1576 | struct hci_conn_params *p; | |
1577 | ||
f161dd41 JH |
1578 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1579 | if (p->conn) { | |
1580 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1581 | hci_conn_put(p->conn); |
f161dd41 JH |
1582 | p->conn = NULL; |
1583 | } | |
d7347f3c | 1584 | list_del_init(&p->action); |
f161dd41 | 1585 | } |
d7347f3c JH |
1586 | |
1587 | BT_DBG("All LE pending actions cleared"); | |
1588 | } | |
1589 | ||
1da177e4 LT |
1590 | static int hci_dev_do_close(struct hci_dev *hdev) |
1591 | { | |
1592 | BT_DBG("%s %p", hdev->name, hdev); | |
1593 | ||
78c04c0b VCG |
1594 | cancel_delayed_work(&hdev->power_off); |
1595 | ||
1da177e4 LT |
1596 | hci_req_cancel(hdev, ENODEV); |
1597 | hci_req_lock(hdev); | |
1598 | ||
1599 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1600 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1601 | hci_req_unlock(hdev); |
1602 | return 0; | |
1603 | } | |
1604 | ||
3eff45ea GP |
1605 | /* Flush RX and TX works */ |
1606 | flush_work(&hdev->tx_work); | |
b78752cc | 1607 | flush_work(&hdev->rx_work); |
1da177e4 | 1608 | |
16ab91ab | 1609 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1610 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1611 | hdev->discov_timeout = 0; |
5e5282bb | 1612 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 1613 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1614 | } |
1615 | ||
a8b2d5c2 | 1616 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1617 | cancel_delayed_work(&hdev->service_cache); |
1618 | ||
7ba8b4be | 1619 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
4518bb0f JH |
1620 | |
1621 | if (test_bit(HCI_MGMT, &hdev->dev_flags)) | |
1622 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
7ba8b4be | 1623 | |
76727c02 JH |
1624 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1625 | * ensuring the workqueue is empty up front. | |
1626 | */ | |
1627 | drain_workqueue(hdev->workqueue); | |
1628 | ||
09fd0de5 | 1629 | hci_dev_lock(hdev); |
1aeb9c65 | 1630 | |
8f502f84 JH |
1631 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1632 | ||
1aeb9c65 JH |
1633 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
1634 | if (hdev->dev_type == HCI_BREDR) | |
1635 | mgmt_powered(hdev, 0); | |
1636 | } | |
1637 | ||
1f9b9a5d | 1638 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1639 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1640 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1641 | hci_dev_unlock(hdev); |
1da177e4 | 1642 | |
64dae967 MH |
1643 | smp_unregister(hdev); |
1644 | ||
1da177e4 LT |
1645 | hci_notify(hdev, HCI_DEV_DOWN); |
1646 | ||
1647 | if (hdev->flush) | |
1648 | hdev->flush(hdev); | |
1649 | ||
1650 | /* Reset device */ | |
1651 | skb_queue_purge(&hdev->cmd_q); | |
1652 | atomic_set(&hdev->cmd_cnt, 1); | |
4a964404 MH |
1653 | if (!test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
1654 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && | |
a6c511c6 | 1655 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1656 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1657 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1658 | clear_bit(HCI_INIT, &hdev->flags); |
1659 | } | |
1660 | ||
c347b765 GP |
1661 | /* flush cmd work */ |
1662 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1663 | |
1664 | /* Drop queues */ | |
1665 | skb_queue_purge(&hdev->rx_q); | |
1666 | skb_queue_purge(&hdev->cmd_q); | |
1667 | skb_queue_purge(&hdev->raw_q); | |
1668 | ||
1669 | /* Drop last sent command */ | |
1670 | if (hdev->sent_cmd) { | |
65cc2b49 | 1671 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1672 | kfree_skb(hdev->sent_cmd); |
1673 | hdev->sent_cmd = NULL; | |
1674 | } | |
1675 | ||
b6ddb638 JH |
1676 | kfree_skb(hdev->recv_evt); |
1677 | hdev->recv_evt = NULL; | |
1678 | ||
1da177e4 LT |
1679 | /* After this point our queues are empty |
1680 | * and no tasks are scheduled. */ | |
1681 | hdev->close(hdev); | |
1682 | ||
35b973c9 | 1683 | /* Clear flags */ |
fee746b0 | 1684 | hdev->flags &= BIT(HCI_RAW); |
35b973c9 JH |
1685 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; |
1686 | ||
ced5c338 | 1687 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1688 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1689 | |
e59fda8d | 1690 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1691 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1692 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1693 | |
1da177e4 LT |
1694 | hci_req_unlock(hdev); |
1695 | ||
1696 | hci_dev_put(hdev); | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | int hci_dev_close(__u16 dev) | |
1701 | { | |
1702 | struct hci_dev *hdev; | |
1703 | int err; | |
1704 | ||
70f23020 AE |
1705 | hdev = hci_dev_get(dev); |
1706 | if (!hdev) | |
1da177e4 | 1707 | return -ENODEV; |
8ee56540 | 1708 | |
0736cfa8 MH |
1709 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1710 | err = -EBUSY; | |
1711 | goto done; | |
1712 | } | |
1713 | ||
8ee56540 MH |
1714 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
1715 | cancel_delayed_work(&hdev->power_off); | |
1716 | ||
1da177e4 | 1717 | err = hci_dev_do_close(hdev); |
8ee56540 | 1718 | |
0736cfa8 | 1719 | done: |
1da177e4 LT |
1720 | hci_dev_put(hdev); |
1721 | return err; | |
1722 | } | |
1723 | ||
5c912495 | 1724 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1725 | { |
5c912495 | 1726 | int ret; |
1da177e4 | 1727 | |
5c912495 | 1728 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 LT |
1729 | |
1730 | hci_req_lock(hdev); | |
1da177e4 | 1731 | |
1da177e4 LT |
1732 | /* Drop queues */ |
1733 | skb_queue_purge(&hdev->rx_q); | |
1734 | skb_queue_purge(&hdev->cmd_q); | |
1735 | ||
76727c02 JH |
1736 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1737 | * ensuring the workqueue is empty up front. | |
1738 | */ | |
1739 | drain_workqueue(hdev->workqueue); | |
1740 | ||
09fd0de5 | 1741 | hci_dev_lock(hdev); |
1f9b9a5d | 1742 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1743 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1744 | hci_dev_unlock(hdev); |
1da177e4 LT |
1745 | |
1746 | if (hdev->flush) | |
1747 | hdev->flush(hdev); | |
1748 | ||
8e87d142 | 1749 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1750 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1751 | |
fee746b0 | 1752 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 1753 | |
1da177e4 | 1754 | hci_req_unlock(hdev); |
1da177e4 LT |
1755 | return ret; |
1756 | } | |
1757 | ||
5c912495 MH |
1758 | int hci_dev_reset(__u16 dev) |
1759 | { | |
1760 | struct hci_dev *hdev; | |
1761 | int err; | |
1762 | ||
1763 | hdev = hci_dev_get(dev); | |
1764 | if (!hdev) | |
1765 | return -ENODEV; | |
1766 | ||
1767 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1768 | err = -ENETDOWN; | |
1769 | goto done; | |
1770 | } | |
1771 | ||
1772 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1773 | err = -EBUSY; | |
1774 | goto done; | |
1775 | } | |
1776 | ||
1777 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { | |
1778 | err = -EOPNOTSUPP; | |
1779 | goto done; | |
1780 | } | |
1781 | ||
1782 | err = hci_dev_do_reset(hdev); | |
1783 | ||
1784 | done: | |
1785 | hci_dev_put(hdev); | |
1786 | return err; | |
1787 | } | |
1788 | ||
1da177e4 LT |
1789 | int hci_dev_reset_stat(__u16 dev) |
1790 | { | |
1791 | struct hci_dev *hdev; | |
1792 | int ret = 0; | |
1793 | ||
70f23020 AE |
1794 | hdev = hci_dev_get(dev); |
1795 | if (!hdev) | |
1da177e4 LT |
1796 | return -ENODEV; |
1797 | ||
0736cfa8 MH |
1798 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1799 | ret = -EBUSY; | |
1800 | goto done; | |
1801 | } | |
1802 | ||
4a964404 | 1803 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
1804 | ret = -EOPNOTSUPP; |
1805 | goto done; | |
1806 | } | |
1807 | ||
1da177e4 LT |
1808 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1809 | ||
0736cfa8 | 1810 | done: |
1da177e4 | 1811 | hci_dev_put(hdev); |
1da177e4 LT |
1812 | return ret; |
1813 | } | |
1814 | ||
123abc08 JH |
1815 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1816 | { | |
bc6d2d04 | 1817 | bool conn_changed, discov_changed; |
123abc08 JH |
1818 | |
1819 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1820 | ||
1821 | if ((scan & SCAN_PAGE)) | |
1822 | conn_changed = !test_and_set_bit(HCI_CONNECTABLE, | |
1823 | &hdev->dev_flags); | |
1824 | else | |
1825 | conn_changed = test_and_clear_bit(HCI_CONNECTABLE, | |
1826 | &hdev->dev_flags); | |
1827 | ||
bc6d2d04 JH |
1828 | if ((scan & SCAN_INQUIRY)) { |
1829 | discov_changed = !test_and_set_bit(HCI_DISCOVERABLE, | |
1830 | &hdev->dev_flags); | |
1831 | } else { | |
1832 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); | |
1833 | discov_changed = test_and_clear_bit(HCI_DISCOVERABLE, | |
1834 | &hdev->dev_flags); | |
1835 | } | |
1836 | ||
123abc08 JH |
1837 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1838 | return; | |
1839 | ||
bc6d2d04 JH |
1840 | if (conn_changed || discov_changed) { |
1841 | /* In case this was disabled through mgmt */ | |
1842 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
1843 | ||
1844 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) | |
1845 | mgmt_update_adv_data(hdev); | |
1846 | ||
123abc08 | 1847 | mgmt_new_settings(hdev); |
bc6d2d04 | 1848 | } |
123abc08 JH |
1849 | } |
1850 | ||
1da177e4 LT |
1851 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1852 | { | |
1853 | struct hci_dev *hdev; | |
1854 | struct hci_dev_req dr; | |
1855 | int err = 0; | |
1856 | ||
1857 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1858 | return -EFAULT; | |
1859 | ||
70f23020 AE |
1860 | hdev = hci_dev_get(dr.dev_id); |
1861 | if (!hdev) | |
1da177e4 LT |
1862 | return -ENODEV; |
1863 | ||
0736cfa8 MH |
1864 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1865 | err = -EBUSY; | |
1866 | goto done; | |
1867 | } | |
1868 | ||
4a964404 | 1869 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
1870 | err = -EOPNOTSUPP; |
1871 | goto done; | |
1872 | } | |
1873 | ||
5b69bef5 MH |
1874 | if (hdev->dev_type != HCI_BREDR) { |
1875 | err = -EOPNOTSUPP; | |
1876 | goto done; | |
1877 | } | |
1878 | ||
56f87901 JH |
1879 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1880 | err = -EOPNOTSUPP; | |
1881 | goto done; | |
1882 | } | |
1883 | ||
1da177e4 LT |
1884 | switch (cmd) { |
1885 | case HCISETAUTH: | |
01178cd4 JH |
1886 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1887 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1888 | break; |
1889 | ||
1890 | case HCISETENCRYPT: | |
1891 | if (!lmp_encrypt_capable(hdev)) { | |
1892 | err = -EOPNOTSUPP; | |
1893 | break; | |
1894 | } | |
1895 | ||
1896 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1897 | /* Auth must be enabled first */ | |
01178cd4 JH |
1898 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1899 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1900 | if (err) |
1901 | break; | |
1902 | } | |
1903 | ||
01178cd4 JH |
1904 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1905 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1906 | break; |
1907 | ||
1908 | case HCISETSCAN: | |
01178cd4 JH |
1909 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1910 | HCI_INIT_TIMEOUT); | |
91a668b0 | 1911 | |
bc6d2d04 JH |
1912 | /* Ensure that the connectable and discoverable states |
1913 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1914 | */ |
123abc08 JH |
1915 | if (!err) |
1916 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1917 | break; |
1918 | ||
1da177e4 | 1919 | case HCISETLINKPOL: |
01178cd4 JH |
1920 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1921 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1922 | break; |
1923 | ||
1924 | case HCISETLINKMODE: | |
e4e8e37c MH |
1925 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1926 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1927 | break; | |
1928 | ||
1929 | case HCISETPTYPE: | |
1930 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1931 | break; |
1932 | ||
1933 | case HCISETACLMTU: | |
e4e8e37c MH |
1934 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1935 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1936 | break; |
1937 | ||
1938 | case HCISETSCOMTU: | |
e4e8e37c MH |
1939 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1940 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1941 | break; |
1942 | ||
1943 | default: | |
1944 | err = -EINVAL; | |
1945 | break; | |
1946 | } | |
e4e8e37c | 1947 | |
0736cfa8 | 1948 | done: |
1da177e4 LT |
1949 | hci_dev_put(hdev); |
1950 | return err; | |
1951 | } | |
1952 | ||
1953 | int hci_get_dev_list(void __user *arg) | |
1954 | { | |
8035ded4 | 1955 | struct hci_dev *hdev; |
1da177e4 LT |
1956 | struct hci_dev_list_req *dl; |
1957 | struct hci_dev_req *dr; | |
1da177e4 LT |
1958 | int n = 0, size, err; |
1959 | __u16 dev_num; | |
1960 | ||
1961 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1962 | return -EFAULT; | |
1963 | ||
1964 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1965 | return -EINVAL; | |
1966 | ||
1967 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1968 | ||
70f23020 AE |
1969 | dl = kzalloc(size, GFP_KERNEL); |
1970 | if (!dl) | |
1da177e4 LT |
1971 | return -ENOMEM; |
1972 | ||
1973 | dr = dl->dev_req; | |
1974 | ||
f20d09d5 | 1975 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1976 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1977 | unsigned long flags = hdev->flags; |
c542a06c | 1978 | |
2e84d8db MH |
1979 | /* When the auto-off is configured it means the transport |
1980 | * is running, but in that case still indicate that the | |
1981 | * device is actually down. | |
1982 | */ | |
1983 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1984 | flags &= ~BIT(HCI_UP); | |
c542a06c | 1985 | |
1da177e4 | 1986 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1987 | (dr + n)->dev_opt = flags; |
c542a06c | 1988 | |
1da177e4 LT |
1989 | if (++n >= dev_num) |
1990 | break; | |
1991 | } | |
f20d09d5 | 1992 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1993 | |
1994 | dl->dev_num = n; | |
1995 | size = sizeof(*dl) + n * sizeof(*dr); | |
1996 | ||
1997 | err = copy_to_user(arg, dl, size); | |
1998 | kfree(dl); | |
1999 | ||
2000 | return err ? -EFAULT : 0; | |
2001 | } | |
2002 | ||
2003 | int hci_get_dev_info(void __user *arg) | |
2004 | { | |
2005 | struct hci_dev *hdev; | |
2006 | struct hci_dev_info di; | |
2e84d8db | 2007 | unsigned long flags; |
1da177e4 LT |
2008 | int err = 0; |
2009 | ||
2010 | if (copy_from_user(&di, arg, sizeof(di))) | |
2011 | return -EFAULT; | |
2012 | ||
70f23020 AE |
2013 | hdev = hci_dev_get(di.dev_id); |
2014 | if (!hdev) | |
1da177e4 LT |
2015 | return -ENODEV; |
2016 | ||
2e84d8db MH |
2017 | /* When the auto-off is configured it means the transport |
2018 | * is running, but in that case still indicate that the | |
2019 | * device is actually down. | |
2020 | */ | |
2021 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2022 | flags = hdev->flags & ~BIT(HCI_UP); | |
2023 | else | |
2024 | flags = hdev->flags; | |
c542a06c | 2025 | |
1da177e4 LT |
2026 | strcpy(di.name, hdev->name); |
2027 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2028 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2029 | di.flags = flags; |
1da177e4 | 2030 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2031 | if (lmp_bredr_capable(hdev)) { |
2032 | di.acl_mtu = hdev->acl_mtu; | |
2033 | di.acl_pkts = hdev->acl_pkts; | |
2034 | di.sco_mtu = hdev->sco_mtu; | |
2035 | di.sco_pkts = hdev->sco_pkts; | |
2036 | } else { | |
2037 | di.acl_mtu = hdev->le_mtu; | |
2038 | di.acl_pkts = hdev->le_pkts; | |
2039 | di.sco_mtu = 0; | |
2040 | di.sco_pkts = 0; | |
2041 | } | |
1da177e4 LT |
2042 | di.link_policy = hdev->link_policy; |
2043 | di.link_mode = hdev->link_mode; | |
2044 | ||
2045 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2046 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2047 | ||
2048 | if (copy_to_user(arg, &di, sizeof(di))) | |
2049 | err = -EFAULT; | |
2050 | ||
2051 | hci_dev_put(hdev); | |
2052 | ||
2053 | return err; | |
2054 | } | |
2055 | ||
2056 | /* ---- Interface to HCI drivers ---- */ | |
2057 | ||
611b30f7 MH |
2058 | static int hci_rfkill_set_block(void *data, bool blocked) |
2059 | { | |
2060 | struct hci_dev *hdev = data; | |
2061 | ||
2062 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2063 | ||
0736cfa8 MH |
2064 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2065 | return -EBUSY; | |
2066 | ||
5e130367 JH |
2067 | if (blocked) { |
2068 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
d603b76b MH |
2069 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
2070 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) | |
bf543036 | 2071 | hci_dev_do_close(hdev); |
5e130367 JH |
2072 | } else { |
2073 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 2074 | } |
611b30f7 MH |
2075 | |
2076 | return 0; | |
2077 | } | |
2078 | ||
2079 | static const struct rfkill_ops hci_rfkill_ops = { | |
2080 | .set_block = hci_rfkill_set_block, | |
2081 | }; | |
2082 | ||
ab81cbf9 JH |
2083 | static void hci_power_on(struct work_struct *work) |
2084 | { | |
2085 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2086 | int err; |
ab81cbf9 JH |
2087 | |
2088 | BT_DBG("%s", hdev->name); | |
2089 | ||
cbed0ca1 | 2090 | err = hci_dev_do_open(hdev); |
96570ffc | 2091 | if (err < 0) { |
3ad67582 | 2092 | hci_dev_lock(hdev); |
96570ffc | 2093 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2094 | hci_dev_unlock(hdev); |
ab81cbf9 | 2095 | return; |
96570ffc | 2096 | } |
ab81cbf9 | 2097 | |
a5c8f270 MH |
2098 | /* During the HCI setup phase, a few error conditions are |
2099 | * ignored and they need to be checked now. If they are still | |
2100 | * valid, it is important to turn the device back off. | |
2101 | */ | |
2102 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
4a964404 | 2103 | test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) || |
a5c8f270 MH |
2104 | (hdev->dev_type == HCI_BREDR && |
2105 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2106 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
2107 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
2108 | hci_dev_do_close(hdev); | |
2109 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
2110 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2111 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2112 | } |
ab81cbf9 | 2113 | |
fee746b0 | 2114 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) { |
4a964404 MH |
2115 | /* For unconfigured devices, set the HCI_RAW flag |
2116 | * so that userspace can easily identify them. | |
4a964404 MH |
2117 | */ |
2118 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
2119 | set_bit(HCI_RAW, &hdev->flags); | |
0602a8ad MH |
2120 | |
2121 | /* For fully configured devices, this will send | |
2122 | * the Index Added event. For unconfigured devices, | |
2123 | * it will send Unconfigued Index Added event. | |
2124 | * | |
2125 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2126 | * and no event will be send. | |
2127 | */ | |
2128 | mgmt_index_added(hdev); | |
d603b76b | 2129 | } else if (test_and_clear_bit(HCI_CONFIG, &hdev->dev_flags)) { |
5ea234d3 MH |
2130 | /* When the controller is now configured, then it |
2131 | * is important to clear the HCI_RAW flag. | |
2132 | */ | |
2133 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
2134 | clear_bit(HCI_RAW, &hdev->flags); | |
2135 | ||
d603b76b MH |
2136 | /* Powering on the controller with HCI_CONFIG set only |
2137 | * happens with the transition from unconfigured to | |
2138 | * configured. This will send the Index Added event. | |
2139 | */ | |
744cf19e | 2140 | mgmt_index_added(hdev); |
fee746b0 | 2141 | } |
ab81cbf9 JH |
2142 | } |
2143 | ||
2144 | static void hci_power_off(struct work_struct *work) | |
2145 | { | |
3243553f | 2146 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2147 | power_off.work); |
ab81cbf9 JH |
2148 | |
2149 | BT_DBG("%s", hdev->name); | |
2150 | ||
8ee56540 | 2151 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2152 | } |
2153 | ||
c7741d16 MH |
2154 | static void hci_error_reset(struct work_struct *work) |
2155 | { | |
2156 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2157 | ||
2158 | BT_DBG("%s", hdev->name); | |
2159 | ||
2160 | if (hdev->hw_error) | |
2161 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2162 | else | |
2163 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2164 | hdev->hw_error_code); | |
2165 | ||
2166 | if (hci_dev_do_close(hdev)) | |
2167 | return; | |
2168 | ||
c7741d16 MH |
2169 | hci_dev_do_open(hdev); |
2170 | } | |
2171 | ||
16ab91ab JH |
2172 | static void hci_discov_off(struct work_struct *work) |
2173 | { | |
2174 | struct hci_dev *hdev; | |
16ab91ab JH |
2175 | |
2176 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2177 | ||
2178 | BT_DBG("%s", hdev->name); | |
2179 | ||
d1967ff8 | 2180 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2181 | } |
2182 | ||
35f7498a | 2183 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2184 | { |
4821002c | 2185 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2186 | |
4821002c JH |
2187 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2188 | list_del(&uuid->list); | |
2aeb9a1a JH |
2189 | kfree(uuid); |
2190 | } | |
2aeb9a1a JH |
2191 | } |
2192 | ||
35f7498a | 2193 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2194 | { |
0378b597 | 2195 | struct link_key *key; |
55ed8ca1 | 2196 | |
0378b597 JH |
2197 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2198 | list_del_rcu(&key->list); | |
2199 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2200 | } |
55ed8ca1 JH |
2201 | } |
2202 | ||
35f7498a | 2203 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2204 | { |
970d0f1b | 2205 | struct smp_ltk *k; |
b899efaf | 2206 | |
970d0f1b JH |
2207 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2208 | list_del_rcu(&k->list); | |
2209 | kfree_rcu(k, rcu); | |
b899efaf | 2210 | } |
b899efaf VCG |
2211 | } |
2212 | ||
970c4e46 JH |
2213 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2214 | { | |
adae20cb | 2215 | struct smp_irk *k; |
970c4e46 | 2216 | |
adae20cb JH |
2217 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2218 | list_del_rcu(&k->list); | |
2219 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2220 | } |
2221 | } | |
2222 | ||
55ed8ca1 JH |
2223 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2224 | { | |
8035ded4 | 2225 | struct link_key *k; |
55ed8ca1 | 2226 | |
0378b597 JH |
2227 | rcu_read_lock(); |
2228 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2229 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2230 | rcu_read_unlock(); | |
55ed8ca1 | 2231 | return k; |
0378b597 JH |
2232 | } |
2233 | } | |
2234 | rcu_read_unlock(); | |
55ed8ca1 JH |
2235 | |
2236 | return NULL; | |
2237 | } | |
2238 | ||
745c0ce3 | 2239 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2240 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2241 | { |
2242 | /* Legacy key */ | |
2243 | if (key_type < 0x03) | |
745c0ce3 | 2244 | return true; |
d25e28ab JH |
2245 | |
2246 | /* Debug keys are insecure so don't store them persistently */ | |
2247 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2248 | return false; |
d25e28ab JH |
2249 | |
2250 | /* Changed combination key and there's no previous one */ | |
2251 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2252 | return false; |
d25e28ab JH |
2253 | |
2254 | /* Security mode 3 case */ | |
2255 | if (!conn) | |
745c0ce3 | 2256 | return true; |
d25e28ab | 2257 | |
e3befab9 JH |
2258 | /* BR/EDR key derived using SC from an LE link */ |
2259 | if (conn->type == LE_LINK) | |
2260 | return true; | |
2261 | ||
d25e28ab JH |
2262 | /* Neither local nor remote side had no-bonding as requirement */ |
2263 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2264 | return true; |
d25e28ab JH |
2265 | |
2266 | /* Local side had dedicated bonding as requirement */ | |
2267 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2268 | return true; |
d25e28ab JH |
2269 | |
2270 | /* Remote side had dedicated bonding as requirement */ | |
2271 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2272 | return true; |
d25e28ab JH |
2273 | |
2274 | /* If none of the above criteria match, then don't store the key | |
2275 | * persistently */ | |
745c0ce3 | 2276 | return false; |
d25e28ab JH |
2277 | } |
2278 | ||
e804d25d | 2279 | static u8 ltk_role(u8 type) |
98a0b845 | 2280 | { |
e804d25d JH |
2281 | if (type == SMP_LTK) |
2282 | return HCI_ROLE_MASTER; | |
98a0b845 | 2283 | |
e804d25d | 2284 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2285 | } |
2286 | ||
f3a73d97 JH |
2287 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2288 | u8 addr_type, u8 role) | |
75d262c2 | 2289 | { |
c9839a11 | 2290 | struct smp_ltk *k; |
75d262c2 | 2291 | |
970d0f1b JH |
2292 | rcu_read_lock(); |
2293 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2294 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2295 | continue; | |
2296 | ||
923e2414 | 2297 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2298 | rcu_read_unlock(); |
75d262c2 | 2299 | return k; |
970d0f1b JH |
2300 | } |
2301 | } | |
2302 | rcu_read_unlock(); | |
75d262c2 VCG |
2303 | |
2304 | return NULL; | |
2305 | } | |
75d262c2 | 2306 | |
970c4e46 JH |
2307 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2308 | { | |
2309 | struct smp_irk *irk; | |
2310 | ||
adae20cb JH |
2311 | rcu_read_lock(); |
2312 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2313 | if (!bacmp(&irk->rpa, rpa)) { | |
2314 | rcu_read_unlock(); | |
970c4e46 | 2315 | return irk; |
adae20cb | 2316 | } |
970c4e46 JH |
2317 | } |
2318 | ||
adae20cb | 2319 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2320 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2321 | bacpy(&irk->rpa, rpa); |
adae20cb | 2322 | rcu_read_unlock(); |
970c4e46 JH |
2323 | return irk; |
2324 | } | |
2325 | } | |
adae20cb | 2326 | rcu_read_unlock(); |
970c4e46 JH |
2327 | |
2328 | return NULL; | |
2329 | } | |
2330 | ||
2331 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2332 | u8 addr_type) | |
2333 | { | |
2334 | struct smp_irk *irk; | |
2335 | ||
6cfc9988 JH |
2336 | /* Identity Address must be public or static random */ |
2337 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2338 | return NULL; | |
2339 | ||
adae20cb JH |
2340 | rcu_read_lock(); |
2341 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2342 | if (addr_type == irk->addr_type && |
adae20cb JH |
2343 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2344 | rcu_read_unlock(); | |
970c4e46 | 2345 | return irk; |
adae20cb | 2346 | } |
970c4e46 | 2347 | } |
adae20cb | 2348 | rcu_read_unlock(); |
970c4e46 JH |
2349 | |
2350 | return NULL; | |
2351 | } | |
2352 | ||
567fa2aa | 2353 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2354 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2355 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2356 | { |
2357 | struct link_key *key, *old_key; | |
745c0ce3 | 2358 | u8 old_key_type; |
55ed8ca1 JH |
2359 | |
2360 | old_key = hci_find_link_key(hdev, bdaddr); | |
2361 | if (old_key) { | |
2362 | old_key_type = old_key->type; | |
2363 | key = old_key; | |
2364 | } else { | |
12adcf3a | 2365 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2366 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2367 | if (!key) |
567fa2aa | 2368 | return NULL; |
0378b597 | 2369 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2370 | } |
2371 | ||
6ed93dc6 | 2372 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2373 | |
d25e28ab JH |
2374 | /* Some buggy controller combinations generate a changed |
2375 | * combination key for legacy pairing even when there's no | |
2376 | * previous key */ | |
2377 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2378 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2379 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2380 | if (conn) |
2381 | conn->key_type = type; | |
2382 | } | |
d25e28ab | 2383 | |
55ed8ca1 | 2384 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2385 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2386 | key->pin_len = pin_len; |
2387 | ||
b6020ba0 | 2388 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2389 | key->type = old_key_type; |
4748fed2 JH |
2390 | else |
2391 | key->type = type; | |
2392 | ||
7652ff6a JH |
2393 | if (persistent) |
2394 | *persistent = hci_persistent_key(hdev, conn, type, | |
2395 | old_key_type); | |
4df378a1 | 2396 | |
567fa2aa | 2397 | return key; |
55ed8ca1 JH |
2398 | } |
2399 | ||
ca9142b8 | 2400 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2401 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2402 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2403 | { |
c9839a11 | 2404 | struct smp_ltk *key, *old_key; |
e804d25d | 2405 | u8 role = ltk_role(type); |
75d262c2 | 2406 | |
f3a73d97 | 2407 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2408 | if (old_key) |
75d262c2 | 2409 | key = old_key; |
c9839a11 | 2410 | else { |
0a14ab41 | 2411 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2412 | if (!key) |
ca9142b8 | 2413 | return NULL; |
970d0f1b | 2414 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2415 | } |
2416 | ||
75d262c2 | 2417 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2418 | key->bdaddr_type = addr_type; |
2419 | memcpy(key->val, tk, sizeof(key->val)); | |
2420 | key->authenticated = authenticated; | |
2421 | key->ediv = ediv; | |
fe39c7b2 | 2422 | key->rand = rand; |
c9839a11 VCG |
2423 | key->enc_size = enc_size; |
2424 | key->type = type; | |
75d262c2 | 2425 | |
ca9142b8 | 2426 | return key; |
75d262c2 VCG |
2427 | } |
2428 | ||
ca9142b8 JH |
2429 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2430 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2431 | { |
2432 | struct smp_irk *irk; | |
2433 | ||
2434 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2435 | if (!irk) { | |
2436 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2437 | if (!irk) | |
ca9142b8 | 2438 | return NULL; |
970c4e46 JH |
2439 | |
2440 | bacpy(&irk->bdaddr, bdaddr); | |
2441 | irk->addr_type = addr_type; | |
2442 | ||
adae20cb | 2443 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2444 | } |
2445 | ||
2446 | memcpy(irk->val, val, 16); | |
2447 | bacpy(&irk->rpa, rpa); | |
2448 | ||
ca9142b8 | 2449 | return irk; |
970c4e46 JH |
2450 | } |
2451 | ||
55ed8ca1 JH |
2452 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2453 | { | |
2454 | struct link_key *key; | |
2455 | ||
2456 | key = hci_find_link_key(hdev, bdaddr); | |
2457 | if (!key) | |
2458 | return -ENOENT; | |
2459 | ||
6ed93dc6 | 2460 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2461 | |
0378b597 JH |
2462 | list_del_rcu(&key->list); |
2463 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2464 | |
2465 | return 0; | |
2466 | } | |
2467 | ||
e0b2b27e | 2468 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2469 | { |
970d0f1b | 2470 | struct smp_ltk *k; |
c51ffa0b | 2471 | int removed = 0; |
b899efaf | 2472 | |
970d0f1b | 2473 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2474 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2475 | continue; |
2476 | ||
6ed93dc6 | 2477 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2478 | |
970d0f1b JH |
2479 | list_del_rcu(&k->list); |
2480 | kfree_rcu(k, rcu); | |
c51ffa0b | 2481 | removed++; |
b899efaf VCG |
2482 | } |
2483 | ||
c51ffa0b | 2484 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2485 | } |
2486 | ||
a7ec7338 JH |
2487 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2488 | { | |
adae20cb | 2489 | struct smp_irk *k; |
a7ec7338 | 2490 | |
adae20cb | 2491 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2492 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2493 | continue; | |
2494 | ||
2495 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2496 | ||
adae20cb JH |
2497 | list_del_rcu(&k->list); |
2498 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2499 | } |
2500 | } | |
2501 | ||
6bd32326 | 2502 | /* HCI command timer function */ |
65cc2b49 | 2503 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2504 | { |
65cc2b49 MH |
2505 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2506 | cmd_timer.work); | |
6bd32326 | 2507 | |
bda4f23a AE |
2508 | if (hdev->sent_cmd) { |
2509 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2510 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2511 | ||
2512 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2513 | } else { | |
2514 | BT_ERR("%s command tx timeout", hdev->name); | |
2515 | } | |
2516 | ||
6bd32326 | 2517 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2518 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2519 | } |
2520 | ||
2763eda6 | 2521 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2522 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2523 | { |
2524 | struct oob_data *data; | |
2525 | ||
6928a924 JH |
2526 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2527 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2528 | continue; | |
2529 | if (data->bdaddr_type != bdaddr_type) | |
2530 | continue; | |
2531 | return data; | |
2532 | } | |
2763eda6 SJ |
2533 | |
2534 | return NULL; | |
2535 | } | |
2536 | ||
6928a924 JH |
2537 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2538 | u8 bdaddr_type) | |
2763eda6 SJ |
2539 | { |
2540 | struct oob_data *data; | |
2541 | ||
6928a924 | 2542 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2543 | if (!data) |
2544 | return -ENOENT; | |
2545 | ||
6928a924 | 2546 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2547 | |
2548 | list_del(&data->list); | |
2549 | kfree(data); | |
2550 | ||
2551 | return 0; | |
2552 | } | |
2553 | ||
35f7498a | 2554 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2555 | { |
2556 | struct oob_data *data, *n; | |
2557 | ||
2558 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2559 | list_del(&data->list); | |
2560 | kfree(data); | |
2561 | } | |
2763eda6 SJ |
2562 | } |
2563 | ||
0798872e | 2564 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2565 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2566 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2567 | { |
2568 | struct oob_data *data; | |
2569 | ||
6928a924 | 2570 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2571 | if (!data) { |
0a14ab41 | 2572 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2573 | if (!data) |
2574 | return -ENOMEM; | |
2575 | ||
2576 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2577 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2578 | list_add(&data->list, &hdev->remote_oob_data); |
2579 | } | |
2580 | ||
81328d5c JH |
2581 | if (hash192 && rand192) { |
2582 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2583 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
2584 | } else { | |
2585 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2586 | memset(data->rand192, 0, sizeof(data->rand192)); | |
0798872e MH |
2587 | } |
2588 | ||
81328d5c JH |
2589 | if (hash256 && rand256) { |
2590 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2591 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2592 | } else { | |
2593 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2594 | memset(data->rand256, 0, sizeof(data->rand256)); | |
2595 | } | |
0798872e | 2596 | |
6ed93dc6 | 2597 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2598 | |
2599 | return 0; | |
2600 | } | |
2601 | ||
dcc36c16 | 2602 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2603 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2604 | { |
8035ded4 | 2605 | struct bdaddr_list *b; |
b2a66aad | 2606 | |
dcc36c16 | 2607 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2608 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2609 | return b; |
b9ee0a78 | 2610 | } |
b2a66aad AJ |
2611 | |
2612 | return NULL; | |
2613 | } | |
2614 | ||
dcc36c16 | 2615 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
2616 | { |
2617 | struct list_head *p, *n; | |
2618 | ||
dcc36c16 | 2619 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 2620 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2621 | |
2622 | list_del(p); | |
2623 | kfree(b); | |
2624 | } | |
b2a66aad AJ |
2625 | } |
2626 | ||
dcc36c16 | 2627 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2628 | { |
2629 | struct bdaddr_list *entry; | |
b2a66aad | 2630 | |
b9ee0a78 | 2631 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2632 | return -EBADF; |
2633 | ||
dcc36c16 | 2634 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2635 | return -EEXIST; |
b2a66aad | 2636 | |
27f70f3e | 2637 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2638 | if (!entry) |
2639 | return -ENOMEM; | |
b2a66aad AJ |
2640 | |
2641 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2642 | entry->bdaddr_type = type; |
b2a66aad | 2643 | |
dcc36c16 | 2644 | list_add(&entry->list, list); |
b2a66aad | 2645 | |
2a8357f2 | 2646 | return 0; |
b2a66aad AJ |
2647 | } |
2648 | ||
dcc36c16 | 2649 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2650 | { |
2651 | struct bdaddr_list *entry; | |
b2a66aad | 2652 | |
35f7498a | 2653 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2654 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2655 | return 0; |
2656 | } | |
b2a66aad | 2657 | |
dcc36c16 | 2658 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2659 | if (!entry) |
2660 | return -ENOENT; | |
2661 | ||
2662 | list_del(&entry->list); | |
2663 | kfree(entry); | |
2664 | ||
2665 | return 0; | |
2666 | } | |
2667 | ||
15819a70 AG |
2668 | /* This function requires the caller holds hdev->lock */ |
2669 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2670 | bdaddr_t *addr, u8 addr_type) | |
2671 | { | |
2672 | struct hci_conn_params *params; | |
2673 | ||
738f6185 JH |
2674 | /* The conn params list only contains identity addresses */ |
2675 | if (!hci_is_identity_address(addr, addr_type)) | |
2676 | return NULL; | |
2677 | ||
15819a70 AG |
2678 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
2679 | if (bacmp(¶ms->addr, addr) == 0 && | |
2680 | params->addr_type == addr_type) { | |
2681 | return params; | |
2682 | } | |
2683 | } | |
2684 | ||
2685 | return NULL; | |
2686 | } | |
2687 | ||
4b10966f | 2688 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2689 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2690 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2691 | { |
912b42ef | 2692 | struct hci_conn_params *param; |
a9b0a04c | 2693 | |
738f6185 JH |
2694 | /* The list only contains identity addresses */ |
2695 | if (!hci_is_identity_address(addr, addr_type)) | |
2696 | return NULL; | |
a9b0a04c | 2697 | |
501f8827 | 2698 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2699 | if (bacmp(¶m->addr, addr) == 0 && |
2700 | param->addr_type == addr_type) | |
2701 | return param; | |
4b10966f MH |
2702 | } |
2703 | ||
2704 | return NULL; | |
a9b0a04c AG |
2705 | } |
2706 | ||
15819a70 | 2707 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2708 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2709 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2710 | { |
2711 | struct hci_conn_params *params; | |
2712 | ||
c46245b3 | 2713 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 2714 | return NULL; |
a9b0a04c | 2715 | |
15819a70 | 2716 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce | 2717 | if (params) |
51d167c0 | 2718 | return params; |
15819a70 AG |
2719 | |
2720 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2721 | if (!params) { | |
2722 | BT_ERR("Out of memory"); | |
51d167c0 | 2723 | return NULL; |
15819a70 AG |
2724 | } |
2725 | ||
2726 | bacpy(¶ms->addr, addr); | |
2727 | params->addr_type = addr_type; | |
cef952ce AG |
2728 | |
2729 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2730 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2731 | |
bf5b3c8b MH |
2732 | params->conn_min_interval = hdev->le_conn_min_interval; |
2733 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2734 | params->conn_latency = hdev->le_conn_latency; | |
2735 | params->supervision_timeout = hdev->le_supv_timeout; | |
2736 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2737 | ||
2738 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2739 | ||
51d167c0 | 2740 | return params; |
bf5b3c8b MH |
2741 | } |
2742 | ||
f6c63249 | 2743 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2744 | { |
f8aaf9b6 | 2745 | if (params->conn) { |
f161dd41 | 2746 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2747 | hci_conn_put(params->conn); |
2748 | } | |
f161dd41 | 2749 | |
95305baa | 2750 | list_del(¶ms->action); |
15819a70 AG |
2751 | list_del(¶ms->list); |
2752 | kfree(params); | |
f6c63249 JH |
2753 | } |
2754 | ||
2755 | /* This function requires the caller holds hdev->lock */ | |
2756 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2757 | { | |
2758 | struct hci_conn_params *params; | |
2759 | ||
2760 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2761 | if (!params) | |
2762 | return; | |
2763 | ||
2764 | hci_conn_params_free(params); | |
15819a70 | 2765 | |
95305baa JH |
2766 | hci_update_background_scan(hdev); |
2767 | ||
15819a70 AG |
2768 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2769 | } | |
2770 | ||
2771 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2772 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2773 | { |
2774 | struct hci_conn_params *params, *tmp; | |
2775 | ||
2776 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2777 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2778 | continue; | |
15819a70 AG |
2779 | list_del(¶ms->list); |
2780 | kfree(params); | |
2781 | } | |
2782 | ||
55af49a8 | 2783 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2784 | } |
2785 | ||
2786 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 2787 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2788 | { |
15819a70 | 2789 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2790 | |
f6c63249 JH |
2791 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2792 | hci_conn_params_free(params); | |
77a77a30 | 2793 | |
a4790dbd | 2794 | hci_update_background_scan(hdev); |
77a77a30 | 2795 | |
15819a70 | 2796 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2797 | } |
2798 | ||
1904a853 | 2799 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
7ba8b4be | 2800 | { |
4c87eaab AG |
2801 | if (status) { |
2802 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2803 | |
4c87eaab AG |
2804 | hci_dev_lock(hdev); |
2805 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2806 | hci_dev_unlock(hdev); | |
2807 | return; | |
2808 | } | |
7ba8b4be AG |
2809 | } |
2810 | ||
1904a853 MH |
2811 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
2812 | u16 opcode) | |
7ba8b4be | 2813 | { |
4c87eaab AG |
2814 | /* General inquiry access code (GIAC) */ |
2815 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2816 | struct hci_request req; | |
2817 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2818 | int err; |
2819 | ||
4c87eaab AG |
2820 | if (status) { |
2821 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2822 | return; | |
2823 | } | |
7ba8b4be | 2824 | |
4c87eaab AG |
2825 | switch (hdev->discovery.type) { |
2826 | case DISCOV_TYPE_LE: | |
2827 | hci_dev_lock(hdev); | |
2828 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2829 | hci_dev_unlock(hdev); | |
2830 | break; | |
7ba8b4be | 2831 | |
4c87eaab AG |
2832 | case DISCOV_TYPE_INTERLEAVED: |
2833 | hci_req_init(&req, hdev); | |
7ba8b4be | 2834 | |
4c87eaab AG |
2835 | memset(&cp, 0, sizeof(cp)); |
2836 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2837 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2838 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2839 | |
4c87eaab | 2840 | hci_dev_lock(hdev); |
7dbfac1d | 2841 | |
4c87eaab | 2842 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2843 | |
4c87eaab AG |
2844 | err = hci_req_run(&req, inquiry_complete); |
2845 | if (err) { | |
2846 | BT_ERR("Inquiry request failed: err %d", err); | |
2847 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2848 | } | |
7dbfac1d | 2849 | |
4c87eaab AG |
2850 | hci_dev_unlock(hdev); |
2851 | break; | |
7dbfac1d | 2852 | } |
7dbfac1d AG |
2853 | } |
2854 | ||
7ba8b4be AG |
2855 | static void le_scan_disable_work(struct work_struct *work) |
2856 | { | |
2857 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2858 | le_scan_disable.work); |
4c87eaab AG |
2859 | struct hci_request req; |
2860 | int err; | |
7ba8b4be AG |
2861 | |
2862 | BT_DBG("%s", hdev->name); | |
2863 | ||
4c87eaab | 2864 | hci_req_init(&req, hdev); |
28b75a89 | 2865 | |
b1efcc28 | 2866 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 2867 | |
4c87eaab AG |
2868 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2869 | if (err) | |
2870 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2871 | } |
2872 | ||
a1f4c318 JH |
2873 | /* Copy the Identity Address of the controller. |
2874 | * | |
2875 | * If the controller has a public BD_ADDR, then by default use that one. | |
2876 | * If this is a LE only controller without a public address, default to | |
2877 | * the static random address. | |
2878 | * | |
2879 | * For debugging purposes it is possible to force controllers with a | |
2880 | * public address to use the static random address instead. | |
50b5b952 MH |
2881 | * |
2882 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2883 | * userspace has configured a static address, then that address | |
2884 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2885 | */ |
2886 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2887 | u8 *bdaddr_type) | |
2888 | { | |
111902f7 | 2889 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
50b5b952 MH |
2890 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
2891 | (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags) && | |
2892 | bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a1f4c318 JH |
2893 | bacpy(bdaddr, &hdev->static_addr); |
2894 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2895 | } else { | |
2896 | bacpy(bdaddr, &hdev->bdaddr); | |
2897 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2898 | } | |
2899 | } | |
2900 | ||
9be0dab7 DH |
2901 | /* Alloc HCI device */ |
2902 | struct hci_dev *hci_alloc_dev(void) | |
2903 | { | |
2904 | struct hci_dev *hdev; | |
2905 | ||
27f70f3e | 2906 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
2907 | if (!hdev) |
2908 | return NULL; | |
2909 | ||
b1b813d4 DH |
2910 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2911 | hdev->esco_type = (ESCO_HV1); | |
2912 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2913 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2914 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2915 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2916 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2917 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2918 | |
b1b813d4 DH |
2919 | hdev->sniff_max_interval = 800; |
2920 | hdev->sniff_min_interval = 80; | |
2921 | ||
3f959d46 | 2922 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2923 | hdev->le_adv_min_interval = 0x0800; |
2924 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2925 | hdev->le_scan_interval = 0x0060; |
2926 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
2927 | hdev->le_conn_min_interval = 0x0028; |
2928 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
2929 | hdev->le_conn_latency = 0x0000; |
2930 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2931 | hdev->le_def_tx_len = 0x001b; |
2932 | hdev->le_def_tx_time = 0x0148; | |
2933 | hdev->le_max_tx_len = 0x001b; | |
2934 | hdev->le_max_tx_time = 0x0148; | |
2935 | hdev->le_max_rx_len = 0x001b; | |
2936 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 2937 | |
d6bfd59c | 2938 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2939 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2940 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2941 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 2942 | |
b1b813d4 DH |
2943 | mutex_init(&hdev->lock); |
2944 | mutex_init(&hdev->req_lock); | |
2945 | ||
2946 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2947 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 2948 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
2949 | INIT_LIST_HEAD(&hdev->uuids); |
2950 | INIT_LIST_HEAD(&hdev->link_keys); | |
2951 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2952 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2953 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 2954 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 2955 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2956 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2957 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2958 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2959 | |
2960 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2961 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2962 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2963 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2964 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2965 | |
b1b813d4 DH |
2966 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2967 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2968 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2969 | ||
b1b813d4 DH |
2970 | skb_queue_head_init(&hdev->rx_q); |
2971 | skb_queue_head_init(&hdev->cmd_q); | |
2972 | skb_queue_head_init(&hdev->raw_q); | |
2973 | ||
2974 | init_waitqueue_head(&hdev->req_wait_q); | |
2975 | ||
65cc2b49 | 2976 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 2977 | |
b1b813d4 DH |
2978 | hci_init_sysfs(hdev); |
2979 | discovery_init(hdev); | |
9be0dab7 DH |
2980 | |
2981 | return hdev; | |
2982 | } | |
2983 | EXPORT_SYMBOL(hci_alloc_dev); | |
2984 | ||
2985 | /* Free HCI device */ | |
2986 | void hci_free_dev(struct hci_dev *hdev) | |
2987 | { | |
9be0dab7 DH |
2988 | /* will free via device release */ |
2989 | put_device(&hdev->dev); | |
2990 | } | |
2991 | EXPORT_SYMBOL(hci_free_dev); | |
2992 | ||
1da177e4 LT |
2993 | /* Register HCI device */ |
2994 | int hci_register_dev(struct hci_dev *hdev) | |
2995 | { | |
b1b813d4 | 2996 | int id, error; |
1da177e4 | 2997 | |
74292d5a | 2998 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
2999 | return -EINVAL; |
3000 | ||
08add513 MM |
3001 | /* Do not allow HCI_AMP devices to register at index 0, |
3002 | * so the index can be used as the AMP controller ID. | |
3003 | */ | |
3df92b31 SL |
3004 | switch (hdev->dev_type) { |
3005 | case HCI_BREDR: | |
3006 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3007 | break; | |
3008 | case HCI_AMP: | |
3009 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3010 | break; | |
3011 | default: | |
3012 | return -EINVAL; | |
1da177e4 | 3013 | } |
8e87d142 | 3014 | |
3df92b31 SL |
3015 | if (id < 0) |
3016 | return id; | |
3017 | ||
1da177e4 LT |
3018 | sprintf(hdev->name, "hci%d", id); |
3019 | hdev->id = id; | |
2d8b3a11 AE |
3020 | |
3021 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3022 | ||
d8537548 KC |
3023 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3024 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3025 | if (!hdev->workqueue) { |
3026 | error = -ENOMEM; | |
3027 | goto err; | |
3028 | } | |
f48fd9c8 | 3029 | |
d8537548 KC |
3030 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3031 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3032 | if (!hdev->req_workqueue) { |
3033 | destroy_workqueue(hdev->workqueue); | |
3034 | error = -ENOMEM; | |
3035 | goto err; | |
3036 | } | |
3037 | ||
0153e2ec MH |
3038 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3039 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3040 | ||
bdc3e0f1 MH |
3041 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3042 | ||
3043 | error = device_add(&hdev->dev); | |
33ca954d | 3044 | if (error < 0) |
54506918 | 3045 | goto err_wqueue; |
1da177e4 | 3046 | |
611b30f7 | 3047 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3048 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3049 | hdev); | |
611b30f7 MH |
3050 | if (hdev->rfkill) { |
3051 | if (rfkill_register(hdev->rfkill) < 0) { | |
3052 | rfkill_destroy(hdev->rfkill); | |
3053 | hdev->rfkill = NULL; | |
3054 | } | |
3055 | } | |
3056 | ||
5e130367 JH |
3057 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
3058 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
3059 | ||
a8b2d5c2 | 3060 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 3061 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 3062 | |
01cd3404 | 3063 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3064 | /* Assume BR/EDR support until proven otherwise (such as |
3065 | * through reading supported features during init. | |
3066 | */ | |
3067 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
3068 | } | |
ce2be9ac | 3069 | |
fcee3377 GP |
3070 | write_lock(&hci_dev_list_lock); |
3071 | list_add(&hdev->list, &hci_dev_list); | |
3072 | write_unlock(&hci_dev_list_lock); | |
3073 | ||
4a964404 MH |
3074 | /* Devices that are marked for raw-only usage are unconfigured |
3075 | * and should not be included in normal operation. | |
fee746b0 MH |
3076 | */ |
3077 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
4a964404 | 3078 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
fee746b0 | 3079 | |
1da177e4 | 3080 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3081 | hci_dev_hold(hdev); |
1da177e4 | 3082 | |
19202573 | 3083 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3084 | |
1da177e4 | 3085 | return id; |
f48fd9c8 | 3086 | |
33ca954d DH |
3087 | err_wqueue: |
3088 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3089 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3090 | err: |
3df92b31 | 3091 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3092 | |
33ca954d | 3093 | return error; |
1da177e4 LT |
3094 | } |
3095 | EXPORT_SYMBOL(hci_register_dev); | |
3096 | ||
3097 | /* Unregister HCI device */ | |
59735631 | 3098 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3099 | { |
3df92b31 | 3100 | int i, id; |
ef222013 | 3101 | |
c13854ce | 3102 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3103 | |
94324962 JH |
3104 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
3105 | ||
3df92b31 SL |
3106 | id = hdev->id; |
3107 | ||
f20d09d5 | 3108 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3109 | list_del(&hdev->list); |
f20d09d5 | 3110 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3111 | |
3112 | hci_dev_do_close(hdev); | |
3113 | ||
cd4c5391 | 3114 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
3115 | kfree_skb(hdev->reassembly[i]); |
3116 | ||
b9b5ef18 GP |
3117 | cancel_work_sync(&hdev->power_on); |
3118 | ||
ab81cbf9 | 3119 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d603b76b MH |
3120 | !test_bit(HCI_SETUP, &hdev->dev_flags) && |
3121 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
09fd0de5 | 3122 | hci_dev_lock(hdev); |
744cf19e | 3123 | mgmt_index_removed(hdev); |
09fd0de5 | 3124 | hci_dev_unlock(hdev); |
56e5cb86 | 3125 | } |
ab81cbf9 | 3126 | |
2e58ef3e JH |
3127 | /* mgmt_index_removed should take care of emptying the |
3128 | * pending list */ | |
3129 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3130 | ||
1da177e4 LT |
3131 | hci_notify(hdev, HCI_DEV_UNREG); |
3132 | ||
611b30f7 MH |
3133 | if (hdev->rfkill) { |
3134 | rfkill_unregister(hdev->rfkill); | |
3135 | rfkill_destroy(hdev->rfkill); | |
3136 | } | |
3137 | ||
bdc3e0f1 | 3138 | device_del(&hdev->dev); |
147e2d59 | 3139 | |
0153e2ec MH |
3140 | debugfs_remove_recursive(hdev->debugfs); |
3141 | ||
f48fd9c8 | 3142 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3143 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3144 | |
09fd0de5 | 3145 | hci_dev_lock(hdev); |
dcc36c16 | 3146 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3147 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3148 | hci_uuids_clear(hdev); |
55ed8ca1 | 3149 | hci_link_keys_clear(hdev); |
b899efaf | 3150 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3151 | hci_smp_irks_clear(hdev); |
2763eda6 | 3152 | hci_remote_oob_data_clear(hdev); |
dcc36c16 | 3153 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3154 | hci_conn_params_clear_all(hdev); |
22078800 | 3155 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3156 | hci_dev_unlock(hdev); |
e2e0cacb | 3157 | |
dc946bd8 | 3158 | hci_dev_put(hdev); |
3df92b31 SL |
3159 | |
3160 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3161 | } |
3162 | EXPORT_SYMBOL(hci_unregister_dev); | |
3163 | ||
3164 | /* Suspend HCI device */ | |
3165 | int hci_suspend_dev(struct hci_dev *hdev) | |
3166 | { | |
3167 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3168 | return 0; | |
3169 | } | |
3170 | EXPORT_SYMBOL(hci_suspend_dev); | |
3171 | ||
3172 | /* Resume HCI device */ | |
3173 | int hci_resume_dev(struct hci_dev *hdev) | |
3174 | { | |
3175 | hci_notify(hdev, HCI_DEV_RESUME); | |
3176 | return 0; | |
3177 | } | |
3178 | EXPORT_SYMBOL(hci_resume_dev); | |
3179 | ||
75e0569f MH |
3180 | /* Reset HCI device */ |
3181 | int hci_reset_dev(struct hci_dev *hdev) | |
3182 | { | |
3183 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3184 | struct sk_buff *skb; | |
3185 | ||
3186 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3187 | if (!skb) | |
3188 | return -ENOMEM; | |
3189 | ||
3190 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
3191 | memcpy(skb_put(skb, 3), hw_err, 3); | |
3192 | ||
3193 | /* Send Hardware Error to upper stack */ | |
3194 | return hci_recv_frame(hdev, skb); | |
3195 | } | |
3196 | EXPORT_SYMBOL(hci_reset_dev); | |
3197 | ||
76bca880 | 3198 | /* Receive frame from HCI drivers */ |
e1a26170 | 3199 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3200 | { |
76bca880 | 3201 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3202 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3203 | kfree_skb(skb); |
3204 | return -ENXIO; | |
3205 | } | |
3206 | ||
d82603c6 | 3207 | /* Incoming skb */ |
76bca880 MH |
3208 | bt_cb(skb)->incoming = 1; |
3209 | ||
3210 | /* Time stamp */ | |
3211 | __net_timestamp(skb); | |
3212 | ||
76bca880 | 3213 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3214 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3215 | |
76bca880 MH |
3216 | return 0; |
3217 | } | |
3218 | EXPORT_SYMBOL(hci_recv_frame); | |
3219 | ||
33e882a5 | 3220 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 3221 | int count, __u8 index) |
33e882a5 SS |
3222 | { |
3223 | int len = 0; | |
3224 | int hlen = 0; | |
3225 | int remain = count; | |
3226 | struct sk_buff *skb; | |
3227 | struct bt_skb_cb *scb; | |
3228 | ||
3229 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 3230 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
3231 | return -EILSEQ; |
3232 | ||
3233 | skb = hdev->reassembly[index]; | |
3234 | ||
3235 | if (!skb) { | |
3236 | switch (type) { | |
3237 | case HCI_ACLDATA_PKT: | |
3238 | len = HCI_MAX_FRAME_SIZE; | |
3239 | hlen = HCI_ACL_HDR_SIZE; | |
3240 | break; | |
3241 | case HCI_EVENT_PKT: | |
3242 | len = HCI_MAX_EVENT_SIZE; | |
3243 | hlen = HCI_EVENT_HDR_SIZE; | |
3244 | break; | |
3245 | case HCI_SCODATA_PKT: | |
3246 | len = HCI_MAX_SCO_SIZE; | |
3247 | hlen = HCI_SCO_HDR_SIZE; | |
3248 | break; | |
3249 | } | |
3250 | ||
1e429f38 | 3251 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
3252 | if (!skb) |
3253 | return -ENOMEM; | |
3254 | ||
3255 | scb = (void *) skb->cb; | |
3256 | scb->expect = hlen; | |
3257 | scb->pkt_type = type; | |
3258 | ||
33e882a5 SS |
3259 | hdev->reassembly[index] = skb; |
3260 | } | |
3261 | ||
3262 | while (count) { | |
3263 | scb = (void *) skb->cb; | |
89bb46d0 | 3264 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
3265 | |
3266 | memcpy(skb_put(skb, len), data, len); | |
3267 | ||
3268 | count -= len; | |
3269 | data += len; | |
3270 | scb->expect -= len; | |
3271 | remain = count; | |
3272 | ||
3273 | switch (type) { | |
3274 | case HCI_EVENT_PKT: | |
3275 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
3276 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
3277 | scb->expect = h->plen; | |
3278 | ||
3279 | if (skb_tailroom(skb) < scb->expect) { | |
3280 | kfree_skb(skb); | |
3281 | hdev->reassembly[index] = NULL; | |
3282 | return -ENOMEM; | |
3283 | } | |
3284 | } | |
3285 | break; | |
3286 | ||
3287 | case HCI_ACLDATA_PKT: | |
3288 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
3289 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
3290 | scb->expect = __le16_to_cpu(h->dlen); | |
3291 | ||
3292 | if (skb_tailroom(skb) < scb->expect) { | |
3293 | kfree_skb(skb); | |
3294 | hdev->reassembly[index] = NULL; | |
3295 | return -ENOMEM; | |
3296 | } | |
3297 | } | |
3298 | break; | |
3299 | ||
3300 | case HCI_SCODATA_PKT: | |
3301 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
3302 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
3303 | scb->expect = h->dlen; | |
3304 | ||
3305 | if (skb_tailroom(skb) < scb->expect) { | |
3306 | kfree_skb(skb); | |
3307 | hdev->reassembly[index] = NULL; | |
3308 | return -ENOMEM; | |
3309 | } | |
3310 | } | |
3311 | break; | |
3312 | } | |
3313 | ||
3314 | if (scb->expect == 0) { | |
3315 | /* Complete frame */ | |
3316 | ||
3317 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 3318 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
3319 | |
3320 | hdev->reassembly[index] = NULL; | |
3321 | return remain; | |
3322 | } | |
3323 | } | |
3324 | ||
3325 | return remain; | |
3326 | } | |
3327 | ||
99811510 SS |
3328 | #define STREAM_REASSEMBLY 0 |
3329 | ||
3330 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
3331 | { | |
3332 | int type; | |
3333 | int rem = 0; | |
3334 | ||
da5f6c37 | 3335 | while (count) { |
99811510 SS |
3336 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
3337 | ||
3338 | if (!skb) { | |
3339 | struct { char type; } *pkt; | |
3340 | ||
3341 | /* Start of the frame */ | |
3342 | pkt = data; | |
3343 | type = pkt->type; | |
3344 | ||
3345 | data++; | |
3346 | count--; | |
3347 | } else | |
3348 | type = bt_cb(skb)->pkt_type; | |
3349 | ||
1e429f38 | 3350 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 3351 | STREAM_REASSEMBLY); |
99811510 SS |
3352 | if (rem < 0) |
3353 | return rem; | |
3354 | ||
3355 | data += (count - rem); | |
3356 | count = rem; | |
f81c6224 | 3357 | } |
99811510 SS |
3358 | |
3359 | return rem; | |
3360 | } | |
3361 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
3362 | ||
1da177e4 LT |
3363 | /* ---- Interface to upper protocols ---- */ |
3364 | ||
1da177e4 LT |
3365 | int hci_register_cb(struct hci_cb *cb) |
3366 | { | |
3367 | BT_DBG("%p name %s", cb, cb->name); | |
3368 | ||
f20d09d5 | 3369 | write_lock(&hci_cb_list_lock); |
1da177e4 | 3370 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 3371 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3372 | |
3373 | return 0; | |
3374 | } | |
3375 | EXPORT_SYMBOL(hci_register_cb); | |
3376 | ||
3377 | int hci_unregister_cb(struct hci_cb *cb) | |
3378 | { | |
3379 | BT_DBG("%p name %s", cb, cb->name); | |
3380 | ||
f20d09d5 | 3381 | write_lock(&hci_cb_list_lock); |
1da177e4 | 3382 | list_del(&cb->list); |
f20d09d5 | 3383 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3384 | |
3385 | return 0; | |
3386 | } | |
3387 | EXPORT_SYMBOL(hci_unregister_cb); | |
3388 | ||
51086991 | 3389 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3390 | { |
cdc52faa MH |
3391 | int err; |
3392 | ||
0d48d939 | 3393 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3394 | |
cd82e61c MH |
3395 | /* Time stamp */ |
3396 | __net_timestamp(skb); | |
1da177e4 | 3397 | |
cd82e61c MH |
3398 | /* Send copy to monitor */ |
3399 | hci_send_to_monitor(hdev, skb); | |
3400 | ||
3401 | if (atomic_read(&hdev->promisc)) { | |
3402 | /* Send copy to the sockets */ | |
470fe1b5 | 3403 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3404 | } |
3405 | ||
3406 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3407 | skb_orphan(skb); | |
3408 | ||
cdc52faa MH |
3409 | err = hdev->send(hdev, skb); |
3410 | if (err < 0) { | |
3411 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3412 | kfree_skb(skb); | |
3413 | } | |
1da177e4 LT |
3414 | } |
3415 | ||
899de765 MH |
3416 | bool hci_req_pending(struct hci_dev *hdev) |
3417 | { | |
3418 | return (hdev->req_status == HCI_REQ_PEND); | |
3419 | } | |
3420 | ||
1ca3a9d0 | 3421 | /* Send HCI command */ |
07dc93dd JH |
3422 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3423 | const void *param) | |
1ca3a9d0 JH |
3424 | { |
3425 | struct sk_buff *skb; | |
3426 | ||
3427 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3428 | ||
3429 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3430 | if (!skb) { | |
3431 | BT_ERR("%s no memory for command", hdev->name); | |
3432 | return -ENOMEM; | |
3433 | } | |
3434 | ||
49c922bb | 3435 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3436 | * single-command requests. |
3437 | */ | |
3438 | bt_cb(skb)->req.start = true; | |
3439 | ||
1da177e4 | 3440 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3441 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3442 | |
3443 | return 0; | |
3444 | } | |
1da177e4 LT |
3445 | |
3446 | /* Get data from the previously sent command */ | |
a9de9248 | 3447 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3448 | { |
3449 | struct hci_command_hdr *hdr; | |
3450 | ||
3451 | if (!hdev->sent_cmd) | |
3452 | return NULL; | |
3453 | ||
3454 | hdr = (void *) hdev->sent_cmd->data; | |
3455 | ||
a9de9248 | 3456 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3457 | return NULL; |
3458 | ||
f0e09510 | 3459 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3460 | |
3461 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3462 | } | |
3463 | ||
3464 | /* Send ACL data */ | |
3465 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3466 | { | |
3467 | struct hci_acl_hdr *hdr; | |
3468 | int len = skb->len; | |
3469 | ||
badff6d0 ACM |
3470 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3471 | skb_reset_transport_header(skb); | |
9c70220b | 3472 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3473 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3474 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3475 | } |
3476 | ||
ee22be7e | 3477 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3478 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3479 | { |
ee22be7e | 3480 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3481 | struct hci_dev *hdev = conn->hdev; |
3482 | struct sk_buff *list; | |
3483 | ||
087bfd99 GP |
3484 | skb->len = skb_headlen(skb); |
3485 | skb->data_len = 0; | |
3486 | ||
3487 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3488 | |
3489 | switch (hdev->dev_type) { | |
3490 | case HCI_BREDR: | |
3491 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3492 | break; | |
3493 | case HCI_AMP: | |
3494 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3495 | break; | |
3496 | default: | |
3497 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3498 | return; | |
3499 | } | |
087bfd99 | 3500 | |
70f23020 AE |
3501 | list = skb_shinfo(skb)->frag_list; |
3502 | if (!list) { | |
1da177e4 LT |
3503 | /* Non fragmented */ |
3504 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3505 | ||
73d80deb | 3506 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3507 | } else { |
3508 | /* Fragmented */ | |
3509 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3510 | ||
3511 | skb_shinfo(skb)->frag_list = NULL; | |
3512 | ||
9cfd5a23 JR |
3513 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3514 | * here because of 6LoWPAN links, as there this function is | |
3515 | * called from softirq and using normal spin lock could cause | |
3516 | * deadlocks. | |
3517 | */ | |
3518 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3519 | |
73d80deb | 3520 | __skb_queue_tail(queue, skb); |
e702112f AE |
3521 | |
3522 | flags &= ~ACL_START; | |
3523 | flags |= ACL_CONT; | |
1da177e4 LT |
3524 | do { |
3525 | skb = list; list = list->next; | |
8e87d142 | 3526 | |
0d48d939 | 3527 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3528 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3529 | |
3530 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3531 | ||
73d80deb | 3532 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3533 | } while (list); |
3534 | ||
9cfd5a23 | 3535 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3536 | } |
73d80deb LAD |
3537 | } |
3538 | ||
3539 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3540 | { | |
ee22be7e | 3541 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3542 | |
f0e09510 | 3543 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3544 | |
ee22be7e | 3545 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3546 | |
3eff45ea | 3547 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3548 | } |
1da177e4 LT |
3549 | |
3550 | /* Send SCO data */ | |
0d861d8b | 3551 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3552 | { |
3553 | struct hci_dev *hdev = conn->hdev; | |
3554 | struct hci_sco_hdr hdr; | |
3555 | ||
3556 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3557 | ||
aca3192c | 3558 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3559 | hdr.dlen = skb->len; |
3560 | ||
badff6d0 ACM |
3561 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3562 | skb_reset_transport_header(skb); | |
9c70220b | 3563 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3564 | |
0d48d939 | 3565 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3566 | |
1da177e4 | 3567 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3568 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3569 | } |
1da177e4 LT |
3570 | |
3571 | /* ---- HCI TX task (outgoing data) ---- */ | |
3572 | ||
3573 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3574 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3575 | int *quote) | |
1da177e4 LT |
3576 | { |
3577 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3578 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3579 | unsigned int num = 0, min = ~0; |
1da177e4 | 3580 | |
8e87d142 | 3581 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3582 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3583 | |
3584 | rcu_read_lock(); | |
3585 | ||
3586 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3587 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3588 | continue; |
769be974 MH |
3589 | |
3590 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3591 | continue; | |
3592 | ||
1da177e4 LT |
3593 | num++; |
3594 | ||
3595 | if (c->sent < min) { | |
3596 | min = c->sent; | |
3597 | conn = c; | |
3598 | } | |
52087a79 LAD |
3599 | |
3600 | if (hci_conn_num(hdev, type) == num) | |
3601 | break; | |
1da177e4 LT |
3602 | } |
3603 | ||
bf4c6325 GP |
3604 | rcu_read_unlock(); |
3605 | ||
1da177e4 | 3606 | if (conn) { |
6ed58ec5 VT |
3607 | int cnt, q; |
3608 | ||
3609 | switch (conn->type) { | |
3610 | case ACL_LINK: | |
3611 | cnt = hdev->acl_cnt; | |
3612 | break; | |
3613 | case SCO_LINK: | |
3614 | case ESCO_LINK: | |
3615 | cnt = hdev->sco_cnt; | |
3616 | break; | |
3617 | case LE_LINK: | |
3618 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3619 | break; | |
3620 | default: | |
3621 | cnt = 0; | |
3622 | BT_ERR("Unknown link type"); | |
3623 | } | |
3624 | ||
3625 | q = cnt / num; | |
1da177e4 LT |
3626 | *quote = q ? q : 1; |
3627 | } else | |
3628 | *quote = 0; | |
3629 | ||
3630 | BT_DBG("conn %p quote %d", conn, *quote); | |
3631 | return conn; | |
3632 | } | |
3633 | ||
6039aa73 | 3634 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3635 | { |
3636 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3637 | struct hci_conn *c; |
1da177e4 | 3638 | |
bae1f5d9 | 3639 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3640 | |
bf4c6325 GP |
3641 | rcu_read_lock(); |
3642 | ||
1da177e4 | 3643 | /* Kill stalled connections */ |
bf4c6325 | 3644 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3645 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3646 | BT_ERR("%s killing stalled connection %pMR", |
3647 | hdev->name, &c->dst); | |
bed71748 | 3648 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3649 | } |
3650 | } | |
bf4c6325 GP |
3651 | |
3652 | rcu_read_unlock(); | |
1da177e4 LT |
3653 | } |
3654 | ||
6039aa73 GP |
3655 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3656 | int *quote) | |
1da177e4 | 3657 | { |
73d80deb LAD |
3658 | struct hci_conn_hash *h = &hdev->conn_hash; |
3659 | struct hci_chan *chan = NULL; | |
abc5de8f | 3660 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3661 | struct hci_conn *conn; |
73d80deb LAD |
3662 | int cnt, q, conn_num = 0; |
3663 | ||
3664 | BT_DBG("%s", hdev->name); | |
3665 | ||
bf4c6325 GP |
3666 | rcu_read_lock(); |
3667 | ||
3668 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3669 | struct hci_chan *tmp; |
3670 | ||
3671 | if (conn->type != type) | |
3672 | continue; | |
3673 | ||
3674 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3675 | continue; | |
3676 | ||
3677 | conn_num++; | |
3678 | ||
8192edef | 3679 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3680 | struct sk_buff *skb; |
3681 | ||
3682 | if (skb_queue_empty(&tmp->data_q)) | |
3683 | continue; | |
3684 | ||
3685 | skb = skb_peek(&tmp->data_q); | |
3686 | if (skb->priority < cur_prio) | |
3687 | continue; | |
3688 | ||
3689 | if (skb->priority > cur_prio) { | |
3690 | num = 0; | |
3691 | min = ~0; | |
3692 | cur_prio = skb->priority; | |
3693 | } | |
3694 | ||
3695 | num++; | |
3696 | ||
3697 | if (conn->sent < min) { | |
3698 | min = conn->sent; | |
3699 | chan = tmp; | |
3700 | } | |
3701 | } | |
3702 | ||
3703 | if (hci_conn_num(hdev, type) == conn_num) | |
3704 | break; | |
3705 | } | |
3706 | ||
bf4c6325 GP |
3707 | rcu_read_unlock(); |
3708 | ||
73d80deb LAD |
3709 | if (!chan) |
3710 | return NULL; | |
3711 | ||
3712 | switch (chan->conn->type) { | |
3713 | case ACL_LINK: | |
3714 | cnt = hdev->acl_cnt; | |
3715 | break; | |
bd1eb66b AE |
3716 | case AMP_LINK: |
3717 | cnt = hdev->block_cnt; | |
3718 | break; | |
73d80deb LAD |
3719 | case SCO_LINK: |
3720 | case ESCO_LINK: | |
3721 | cnt = hdev->sco_cnt; | |
3722 | break; | |
3723 | case LE_LINK: | |
3724 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3725 | break; | |
3726 | default: | |
3727 | cnt = 0; | |
3728 | BT_ERR("Unknown link type"); | |
3729 | } | |
3730 | ||
3731 | q = cnt / num; | |
3732 | *quote = q ? q : 1; | |
3733 | BT_DBG("chan %p quote %d", chan, *quote); | |
3734 | return chan; | |
3735 | } | |
3736 | ||
02b20f0b LAD |
3737 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3738 | { | |
3739 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3740 | struct hci_conn *conn; | |
3741 | int num = 0; | |
3742 | ||
3743 | BT_DBG("%s", hdev->name); | |
3744 | ||
bf4c6325 GP |
3745 | rcu_read_lock(); |
3746 | ||
3747 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3748 | struct hci_chan *chan; |
3749 | ||
3750 | if (conn->type != type) | |
3751 | continue; | |
3752 | ||
3753 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3754 | continue; | |
3755 | ||
3756 | num++; | |
3757 | ||
8192edef | 3758 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3759 | struct sk_buff *skb; |
3760 | ||
3761 | if (chan->sent) { | |
3762 | chan->sent = 0; | |
3763 | continue; | |
3764 | } | |
3765 | ||
3766 | if (skb_queue_empty(&chan->data_q)) | |
3767 | continue; | |
3768 | ||
3769 | skb = skb_peek(&chan->data_q); | |
3770 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3771 | continue; | |
3772 | ||
3773 | skb->priority = HCI_PRIO_MAX - 1; | |
3774 | ||
3775 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3776 | skb->priority); |
02b20f0b LAD |
3777 | } |
3778 | ||
3779 | if (hci_conn_num(hdev, type) == num) | |
3780 | break; | |
3781 | } | |
bf4c6325 GP |
3782 | |
3783 | rcu_read_unlock(); | |
3784 | ||
02b20f0b LAD |
3785 | } |
3786 | ||
b71d385a AE |
3787 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3788 | { | |
3789 | /* Calculate count of blocks used by this packet */ | |
3790 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3791 | } | |
3792 | ||
6039aa73 | 3793 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3794 | { |
4a964404 | 3795 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
1da177e4 LT |
3796 | /* ACL tx timeout must be longer than maximum |
3797 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3798 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3799 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3800 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3801 | } |
63d2bc1b | 3802 | } |
1da177e4 | 3803 | |
6039aa73 | 3804 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3805 | { |
3806 | unsigned int cnt = hdev->acl_cnt; | |
3807 | struct hci_chan *chan; | |
3808 | struct sk_buff *skb; | |
3809 | int quote; | |
3810 | ||
3811 | __check_timeout(hdev, cnt); | |
04837f64 | 3812 | |
73d80deb | 3813 | while (hdev->acl_cnt && |
a8c5fb1a | 3814 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3815 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3816 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3817 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3818 | skb->len, skb->priority); |
73d80deb | 3819 | |
ec1cce24 LAD |
3820 | /* Stop if priority has changed */ |
3821 | if (skb->priority < priority) | |
3822 | break; | |
3823 | ||
3824 | skb = skb_dequeue(&chan->data_q); | |
3825 | ||
73d80deb | 3826 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3827 | bt_cb(skb)->force_active); |
04837f64 | 3828 | |
57d17d70 | 3829 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3830 | hdev->acl_last_tx = jiffies; |
3831 | ||
3832 | hdev->acl_cnt--; | |
73d80deb LAD |
3833 | chan->sent++; |
3834 | chan->conn->sent++; | |
1da177e4 LT |
3835 | } |
3836 | } | |
02b20f0b LAD |
3837 | |
3838 | if (cnt != hdev->acl_cnt) | |
3839 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3840 | } |
3841 | ||
6039aa73 | 3842 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3843 | { |
63d2bc1b | 3844 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3845 | struct hci_chan *chan; |
3846 | struct sk_buff *skb; | |
3847 | int quote; | |
bd1eb66b | 3848 | u8 type; |
b71d385a | 3849 | |
63d2bc1b | 3850 | __check_timeout(hdev, cnt); |
b71d385a | 3851 | |
bd1eb66b AE |
3852 | BT_DBG("%s", hdev->name); |
3853 | ||
3854 | if (hdev->dev_type == HCI_AMP) | |
3855 | type = AMP_LINK; | |
3856 | else | |
3857 | type = ACL_LINK; | |
3858 | ||
b71d385a | 3859 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3860 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3861 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3862 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3863 | int blocks; | |
3864 | ||
3865 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3866 | skb->len, skb->priority); |
b71d385a AE |
3867 | |
3868 | /* Stop if priority has changed */ | |
3869 | if (skb->priority < priority) | |
3870 | break; | |
3871 | ||
3872 | skb = skb_dequeue(&chan->data_q); | |
3873 | ||
3874 | blocks = __get_blocks(hdev, skb); | |
3875 | if (blocks > hdev->block_cnt) | |
3876 | return; | |
3877 | ||
3878 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3879 | bt_cb(skb)->force_active); |
b71d385a | 3880 | |
57d17d70 | 3881 | hci_send_frame(hdev, skb); |
b71d385a AE |
3882 | hdev->acl_last_tx = jiffies; |
3883 | ||
3884 | hdev->block_cnt -= blocks; | |
3885 | quote -= blocks; | |
3886 | ||
3887 | chan->sent += blocks; | |
3888 | chan->conn->sent += blocks; | |
3889 | } | |
3890 | } | |
3891 | ||
3892 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3893 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3894 | } |
3895 | ||
6039aa73 | 3896 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3897 | { |
3898 | BT_DBG("%s", hdev->name); | |
3899 | ||
bd1eb66b AE |
3900 | /* No ACL link over BR/EDR controller */ |
3901 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3902 | return; | |
3903 | ||
3904 | /* No AMP link over AMP controller */ | |
3905 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3906 | return; |
3907 | ||
3908 | switch (hdev->flow_ctl_mode) { | |
3909 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3910 | hci_sched_acl_pkt(hdev); | |
3911 | break; | |
3912 | ||
3913 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3914 | hci_sched_acl_blk(hdev); | |
3915 | break; | |
3916 | } | |
3917 | } | |
3918 | ||
1da177e4 | 3919 | /* Schedule SCO */ |
6039aa73 | 3920 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3921 | { |
3922 | struct hci_conn *conn; | |
3923 | struct sk_buff *skb; | |
3924 | int quote; | |
3925 | ||
3926 | BT_DBG("%s", hdev->name); | |
3927 | ||
52087a79 LAD |
3928 | if (!hci_conn_num(hdev, SCO_LINK)) |
3929 | return; | |
3930 | ||
1da177e4 LT |
3931 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3932 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3933 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3934 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3935 | |
3936 | conn->sent++; | |
3937 | if (conn->sent == ~0) | |
3938 | conn->sent = 0; | |
3939 | } | |
3940 | } | |
3941 | } | |
3942 | ||
6039aa73 | 3943 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3944 | { |
3945 | struct hci_conn *conn; | |
3946 | struct sk_buff *skb; | |
3947 | int quote; | |
3948 | ||
3949 | BT_DBG("%s", hdev->name); | |
3950 | ||
52087a79 LAD |
3951 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3952 | return; | |
3953 | ||
8fc9ced3 GP |
3954 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3955 | "e))) { | |
b6a0dc82 MH |
3956 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3957 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3958 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3959 | |
3960 | conn->sent++; | |
3961 | if (conn->sent == ~0) | |
3962 | conn->sent = 0; | |
3963 | } | |
3964 | } | |
3965 | } | |
3966 | ||
6039aa73 | 3967 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3968 | { |
73d80deb | 3969 | struct hci_chan *chan; |
6ed58ec5 | 3970 | struct sk_buff *skb; |
02b20f0b | 3971 | int quote, cnt, tmp; |
6ed58ec5 VT |
3972 | |
3973 | BT_DBG("%s", hdev->name); | |
3974 | ||
52087a79 LAD |
3975 | if (!hci_conn_num(hdev, LE_LINK)) |
3976 | return; | |
3977 | ||
4a964404 | 3978 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
6ed58ec5 VT |
3979 | /* LE tx timeout must be longer than maximum |
3980 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3981 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3982 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3983 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3984 | } |
3985 | ||
3986 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3987 | tmp = cnt; |
73d80deb | 3988 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3989 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3990 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3991 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3992 | skb->len, skb->priority); |
6ed58ec5 | 3993 | |
ec1cce24 LAD |
3994 | /* Stop if priority has changed */ |
3995 | if (skb->priority < priority) | |
3996 | break; | |
3997 | ||
3998 | skb = skb_dequeue(&chan->data_q); | |
3999 | ||
57d17d70 | 4000 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4001 | hdev->le_last_tx = jiffies; |
4002 | ||
4003 | cnt--; | |
73d80deb LAD |
4004 | chan->sent++; |
4005 | chan->conn->sent++; | |
6ed58ec5 VT |
4006 | } |
4007 | } | |
73d80deb | 4008 | |
6ed58ec5 VT |
4009 | if (hdev->le_pkts) |
4010 | hdev->le_cnt = cnt; | |
4011 | else | |
4012 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4013 | |
4014 | if (cnt != tmp) | |
4015 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4016 | } |
4017 | ||
3eff45ea | 4018 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4019 | { |
3eff45ea | 4020 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4021 | struct sk_buff *skb; |
4022 | ||
6ed58ec5 | 4023 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4024 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4025 | |
52de599e MH |
4026 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
4027 | /* Schedule queues and send stuff to HCI driver */ | |
4028 | hci_sched_acl(hdev); | |
4029 | hci_sched_sco(hdev); | |
4030 | hci_sched_esco(hdev); | |
4031 | hci_sched_le(hdev); | |
4032 | } | |
6ed58ec5 | 4033 | |
1da177e4 LT |
4034 | /* Send next queued raw (unknown type) packet */ |
4035 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4036 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4037 | } |
4038 | ||
25985edc | 4039 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4040 | |
4041 | /* ACL data packet */ | |
6039aa73 | 4042 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4043 | { |
4044 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4045 | struct hci_conn *conn; | |
4046 | __u16 handle, flags; | |
4047 | ||
4048 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4049 | ||
4050 | handle = __le16_to_cpu(hdr->handle); | |
4051 | flags = hci_flags(handle); | |
4052 | handle = hci_handle(handle); | |
4053 | ||
f0e09510 | 4054 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4055 | handle, flags); |
1da177e4 LT |
4056 | |
4057 | hdev->stat.acl_rx++; | |
4058 | ||
4059 | hci_dev_lock(hdev); | |
4060 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4061 | hci_dev_unlock(hdev); | |
8e87d142 | 4062 | |
1da177e4 | 4063 | if (conn) { |
65983fc7 | 4064 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4065 | |
1da177e4 | 4066 | /* Send to upper protocol */ |
686ebf28 UF |
4067 | l2cap_recv_acldata(conn, skb, flags); |
4068 | return; | |
1da177e4 | 4069 | } else { |
8e87d142 | 4070 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4071 | hdev->name, handle); |
1da177e4 LT |
4072 | } |
4073 | ||
4074 | kfree_skb(skb); | |
4075 | } | |
4076 | ||
4077 | /* SCO data packet */ | |
6039aa73 | 4078 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4079 | { |
4080 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4081 | struct hci_conn *conn; | |
4082 | __u16 handle; | |
4083 | ||
4084 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4085 | ||
4086 | handle = __le16_to_cpu(hdr->handle); | |
4087 | ||
f0e09510 | 4088 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4089 | |
4090 | hdev->stat.sco_rx++; | |
4091 | ||
4092 | hci_dev_lock(hdev); | |
4093 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4094 | hci_dev_unlock(hdev); | |
4095 | ||
4096 | if (conn) { | |
1da177e4 | 4097 | /* Send to upper protocol */ |
686ebf28 UF |
4098 | sco_recv_scodata(conn, skb); |
4099 | return; | |
1da177e4 | 4100 | } else { |
8e87d142 | 4101 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4102 | hdev->name, handle); |
1da177e4 LT |
4103 | } |
4104 | ||
4105 | kfree_skb(skb); | |
4106 | } | |
4107 | ||
9238f36a JH |
4108 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4109 | { | |
4110 | struct sk_buff *skb; | |
4111 | ||
4112 | skb = skb_peek(&hdev->cmd_q); | |
4113 | if (!skb) | |
4114 | return true; | |
4115 | ||
4116 | return bt_cb(skb)->req.start; | |
4117 | } | |
4118 | ||
42c6b129 JH |
4119 | static void hci_resend_last(struct hci_dev *hdev) |
4120 | { | |
4121 | struct hci_command_hdr *sent; | |
4122 | struct sk_buff *skb; | |
4123 | u16 opcode; | |
4124 | ||
4125 | if (!hdev->sent_cmd) | |
4126 | return; | |
4127 | ||
4128 | sent = (void *) hdev->sent_cmd->data; | |
4129 | opcode = __le16_to_cpu(sent->opcode); | |
4130 | if (opcode == HCI_OP_RESET) | |
4131 | return; | |
4132 | ||
4133 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4134 | if (!skb) | |
4135 | return; | |
4136 | ||
4137 | skb_queue_head(&hdev->cmd_q, skb); | |
4138 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4139 | } | |
4140 | ||
9238f36a JH |
4141 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
4142 | { | |
4143 | hci_req_complete_t req_complete = NULL; | |
4144 | struct sk_buff *skb; | |
4145 | unsigned long flags; | |
4146 | ||
4147 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4148 | ||
42c6b129 JH |
4149 | /* If the completed command doesn't match the last one that was |
4150 | * sent we need to do special handling of it. | |
9238f36a | 4151 | */ |
42c6b129 JH |
4152 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4153 | /* Some CSR based controllers generate a spontaneous | |
4154 | * reset complete event during init and any pending | |
4155 | * command will never be completed. In such a case we | |
4156 | * need to resend whatever was the last sent | |
4157 | * command. | |
4158 | */ | |
4159 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4160 | hci_resend_last(hdev); | |
4161 | ||
9238f36a | 4162 | return; |
42c6b129 | 4163 | } |
9238f36a JH |
4164 | |
4165 | /* If the command succeeded and there's still more commands in | |
4166 | * this request the request is not yet complete. | |
4167 | */ | |
4168 | if (!status && !hci_req_is_complete(hdev)) | |
4169 | return; | |
4170 | ||
4171 | /* If this was the last command in a request the complete | |
4172 | * callback would be found in hdev->sent_cmd instead of the | |
4173 | * command queue (hdev->cmd_q). | |
4174 | */ | |
4175 | if (hdev->sent_cmd) { | |
4176 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
4177 | |
4178 | if (req_complete) { | |
4179 | /* We must set the complete callback to NULL to | |
4180 | * avoid calling the callback more than once if | |
4181 | * this function gets called again. | |
4182 | */ | |
4183 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
4184 | ||
9238f36a | 4185 | goto call_complete; |
53e21fbc | 4186 | } |
9238f36a JH |
4187 | } |
4188 | ||
4189 | /* Remove all pending commands belonging to this request */ | |
4190 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4191 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
4192 | if (bt_cb(skb)->req.start) { | |
4193 | __skb_queue_head(&hdev->cmd_q, skb); | |
4194 | break; | |
4195 | } | |
4196 | ||
4197 | req_complete = bt_cb(skb)->req.complete; | |
4198 | kfree_skb(skb); | |
4199 | } | |
4200 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4201 | ||
4202 | call_complete: | |
4203 | if (req_complete) | |
1904a853 | 4204 | req_complete(hdev, status, status ? opcode : HCI_OP_NOP); |
9238f36a JH |
4205 | } |
4206 | ||
b78752cc | 4207 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4208 | { |
b78752cc | 4209 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4210 | struct sk_buff *skb; |
4211 | ||
4212 | BT_DBG("%s", hdev->name); | |
4213 | ||
1da177e4 | 4214 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4215 | /* Send copy to monitor */ |
4216 | hci_send_to_monitor(hdev, skb); | |
4217 | ||
1da177e4 LT |
4218 | if (atomic_read(&hdev->promisc)) { |
4219 | /* Send copy to the sockets */ | |
470fe1b5 | 4220 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4221 | } |
4222 | ||
fee746b0 | 4223 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1da177e4 LT |
4224 | kfree_skb(skb); |
4225 | continue; | |
4226 | } | |
4227 | ||
4228 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4229 | /* Don't process data packets in this states. */ | |
0d48d939 | 4230 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4231 | case HCI_ACLDATA_PKT: |
4232 | case HCI_SCODATA_PKT: | |
4233 | kfree_skb(skb); | |
4234 | continue; | |
3ff50b79 | 4235 | } |
1da177e4 LT |
4236 | } |
4237 | ||
4238 | /* Process frame */ | |
0d48d939 | 4239 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4240 | case HCI_EVENT_PKT: |
b78752cc | 4241 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4242 | hci_event_packet(hdev, skb); |
4243 | break; | |
4244 | ||
4245 | case HCI_ACLDATA_PKT: | |
4246 | BT_DBG("%s ACL data packet", hdev->name); | |
4247 | hci_acldata_packet(hdev, skb); | |
4248 | break; | |
4249 | ||
4250 | case HCI_SCODATA_PKT: | |
4251 | BT_DBG("%s SCO data packet", hdev->name); | |
4252 | hci_scodata_packet(hdev, skb); | |
4253 | break; | |
4254 | ||
4255 | default: | |
4256 | kfree_skb(skb); | |
4257 | break; | |
4258 | } | |
4259 | } | |
1da177e4 LT |
4260 | } |
4261 | ||
c347b765 | 4262 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4263 | { |
c347b765 | 4264 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4265 | struct sk_buff *skb; |
4266 | ||
2104786b AE |
4267 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4268 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4269 | |
1da177e4 | 4270 | /* Send queued commands */ |
5a08ecce AE |
4271 | if (atomic_read(&hdev->cmd_cnt)) { |
4272 | skb = skb_dequeue(&hdev->cmd_q); | |
4273 | if (!skb) | |
4274 | return; | |
4275 | ||
7585b97a | 4276 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4277 | |
a675d7f1 | 4278 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4279 | if (hdev->sent_cmd) { |
1da177e4 | 4280 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4281 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4282 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4283 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4284 | else |
65cc2b49 MH |
4285 | schedule_delayed_work(&hdev->cmd_timer, |
4286 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4287 | } else { |
4288 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4289 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4290 | } |
4291 | } | |
4292 | } |