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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> |
1da177e4 | 30 | |
8c520a59 | 31 | #include <linux/rfkill.h> |
1da177e4 LT |
32 | |
33 | #include <net/bluetooth/bluetooth.h> | |
34 | #include <net/bluetooth/hci_core.h> | |
35 | ||
b78752cc | 36 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 37 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 38 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* HCI device list */ |
41 | LIST_HEAD(hci_dev_list); | |
42 | DEFINE_RWLOCK(hci_dev_list_lock); | |
43 | ||
44 | /* HCI callback list */ | |
45 | LIST_HEAD(hci_cb_list); | |
46 | DEFINE_RWLOCK(hci_cb_list_lock); | |
47 | ||
3df92b31 SL |
48 | /* HCI ID Numbering */ |
49 | static DEFINE_IDA(hci_index_ida); | |
50 | ||
1da177e4 LT |
51 | /* ---- HCI notifications ---- */ |
52 | ||
6516455d | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 54 | { |
040030ef | 55 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* ---- HCI requests ---- */ | |
59 | ||
42c6b129 | 60 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 61 | { |
42c6b129 | 62 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
63 | |
64 | if (hdev->req_status == HCI_REQ_PEND) { | |
65 | hdev->req_result = result; | |
66 | hdev->req_status = HCI_REQ_DONE; | |
67 | wake_up_interruptible(&hdev->req_wait_q); | |
68 | } | |
69 | } | |
70 | ||
71 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
72 | { | |
73 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
74 | ||
75 | if (hdev->req_status == HCI_REQ_PEND) { | |
76 | hdev->req_result = err; | |
77 | hdev->req_status = HCI_REQ_CANCELED; | |
78 | wake_up_interruptible(&hdev->req_wait_q); | |
79 | } | |
80 | } | |
81 | ||
77a63e0a FW |
82 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
83 | u8 event) | |
75e84b7c JH |
84 | { |
85 | struct hci_ev_cmd_complete *ev; | |
86 | struct hci_event_hdr *hdr; | |
87 | struct sk_buff *skb; | |
88 | ||
89 | hci_dev_lock(hdev); | |
90 | ||
91 | skb = hdev->recv_evt; | |
92 | hdev->recv_evt = NULL; | |
93 | ||
94 | hci_dev_unlock(hdev); | |
95 | ||
96 | if (!skb) | |
97 | return ERR_PTR(-ENODATA); | |
98 | ||
99 | if (skb->len < sizeof(*hdr)) { | |
100 | BT_ERR("Too short HCI event"); | |
101 | goto failed; | |
102 | } | |
103 | ||
104 | hdr = (void *) skb->data; | |
105 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
106 | ||
7b1abbbe JH |
107 | if (event) { |
108 | if (hdr->evt != event) | |
109 | goto failed; | |
110 | return skb; | |
111 | } | |
112 | ||
75e84b7c JH |
113 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
114 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
115 | goto failed; | |
116 | } | |
117 | ||
118 | if (skb->len < sizeof(*ev)) { | |
119 | BT_ERR("Too short cmd_complete event"); | |
120 | goto failed; | |
121 | } | |
122 | ||
123 | ev = (void *) skb->data; | |
124 | skb_pull(skb, sizeof(*ev)); | |
125 | ||
126 | if (opcode == __le16_to_cpu(ev->opcode)) | |
127 | return skb; | |
128 | ||
129 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
130 | __le16_to_cpu(ev->opcode)); | |
131 | ||
132 | failed: | |
133 | kfree_skb(skb); | |
134 | return ERR_PTR(-ENODATA); | |
135 | } | |
136 | ||
7b1abbbe | 137 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 138 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
139 | { |
140 | DECLARE_WAITQUEUE(wait, current); | |
141 | struct hci_request req; | |
142 | int err = 0; | |
143 | ||
144 | BT_DBG("%s", hdev->name); | |
145 | ||
146 | hci_req_init(&req, hdev); | |
147 | ||
7b1abbbe | 148 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
149 | |
150 | hdev->req_status = HCI_REQ_PEND; | |
151 | ||
152 | err = hci_req_run(&req, hci_req_sync_complete); | |
153 | if (err < 0) | |
154 | return ERR_PTR(err); | |
155 | ||
156 | add_wait_queue(&hdev->req_wait_q, &wait); | |
157 | set_current_state(TASK_INTERRUPTIBLE); | |
158 | ||
159 | schedule_timeout(timeout); | |
160 | ||
161 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
162 | ||
163 | if (signal_pending(current)) | |
164 | return ERR_PTR(-EINTR); | |
165 | ||
166 | switch (hdev->req_status) { | |
167 | case HCI_REQ_DONE: | |
168 | err = -bt_to_errno(hdev->req_result); | |
169 | break; | |
170 | ||
171 | case HCI_REQ_CANCELED: | |
172 | err = -hdev->req_result; | |
173 | break; | |
174 | ||
175 | default: | |
176 | err = -ETIMEDOUT; | |
177 | break; | |
178 | } | |
179 | ||
180 | hdev->req_status = hdev->req_result = 0; | |
181 | ||
182 | BT_DBG("%s end: err %d", hdev->name, err); | |
183 | ||
184 | if (err < 0) | |
185 | return ERR_PTR(err); | |
186 | ||
7b1abbbe JH |
187 | return hci_get_cmd_complete(hdev, opcode, event); |
188 | } | |
189 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
190 | ||
191 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 192 | const void *param, u32 timeout) |
7b1abbbe JH |
193 | { |
194 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
195 | } |
196 | EXPORT_SYMBOL(__hci_cmd_sync); | |
197 | ||
1da177e4 | 198 | /* Execute request and wait for completion. */ |
01178cd4 | 199 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
200 | void (*func)(struct hci_request *req, |
201 | unsigned long opt), | |
01178cd4 | 202 | unsigned long opt, __u32 timeout) |
1da177e4 | 203 | { |
42c6b129 | 204 | struct hci_request req; |
1da177e4 LT |
205 | DECLARE_WAITQUEUE(wait, current); |
206 | int err = 0; | |
207 | ||
208 | BT_DBG("%s start", hdev->name); | |
209 | ||
42c6b129 JH |
210 | hci_req_init(&req, hdev); |
211 | ||
1da177e4 LT |
212 | hdev->req_status = HCI_REQ_PEND; |
213 | ||
42c6b129 | 214 | func(&req, opt); |
53cce22d | 215 | |
42c6b129 JH |
216 | err = hci_req_run(&req, hci_req_sync_complete); |
217 | if (err < 0) { | |
53cce22d | 218 | hdev->req_status = 0; |
920c8300 AG |
219 | |
220 | /* ENODATA means the HCI request command queue is empty. | |
221 | * This can happen when a request with conditionals doesn't | |
222 | * trigger any commands to be sent. This is normal behavior | |
223 | * and should not trigger an error return. | |
42c6b129 | 224 | */ |
920c8300 AG |
225 | if (err == -ENODATA) |
226 | return 0; | |
227 | ||
228 | return err; | |
53cce22d JH |
229 | } |
230 | ||
bc4445c7 AG |
231 | add_wait_queue(&hdev->req_wait_q, &wait); |
232 | set_current_state(TASK_INTERRUPTIBLE); | |
233 | ||
1da177e4 LT |
234 | schedule_timeout(timeout); |
235 | ||
236 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
237 | ||
238 | if (signal_pending(current)) | |
239 | return -EINTR; | |
240 | ||
241 | switch (hdev->req_status) { | |
242 | case HCI_REQ_DONE: | |
e175072f | 243 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
244 | break; |
245 | ||
246 | case HCI_REQ_CANCELED: | |
247 | err = -hdev->req_result; | |
248 | break; | |
249 | ||
250 | default: | |
251 | err = -ETIMEDOUT; | |
252 | break; | |
3ff50b79 | 253 | } |
1da177e4 | 254 | |
a5040efa | 255 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
256 | |
257 | BT_DBG("%s end: err %d", hdev->name, err); | |
258 | ||
259 | return err; | |
260 | } | |
261 | ||
01178cd4 | 262 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
263 | void (*req)(struct hci_request *req, |
264 | unsigned long opt), | |
01178cd4 | 265 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
266 | { |
267 | int ret; | |
268 | ||
7c6a329e MH |
269 | if (!test_bit(HCI_UP, &hdev->flags)) |
270 | return -ENETDOWN; | |
271 | ||
1da177e4 LT |
272 | /* Serialize all requests */ |
273 | hci_req_lock(hdev); | |
01178cd4 | 274 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
275 | hci_req_unlock(hdev); |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
42c6b129 | 280 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 281 | { |
42c6b129 | 282 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
283 | |
284 | /* Reset device */ | |
42c6b129 JH |
285 | set_bit(HCI_RESET, &req->hdev->flags); |
286 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
287 | } |
288 | ||
42c6b129 | 289 | static void bredr_init(struct hci_request *req) |
1da177e4 | 290 | { |
42c6b129 | 291 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 292 | |
1da177e4 | 293 | /* Read Local Supported Features */ |
42c6b129 | 294 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 295 | |
1143e5a6 | 296 | /* Read Local Version */ |
42c6b129 | 297 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
298 | |
299 | /* Read BD Address */ | |
42c6b129 | 300 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
301 | } |
302 | ||
42c6b129 | 303 | static void amp_init(struct hci_request *req) |
e61ef499 | 304 | { |
42c6b129 | 305 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 306 | |
e61ef499 | 307 | /* Read Local Version */ |
42c6b129 | 308 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 AE |
309 | |
310 | /* Read Local AMP Info */ | |
42c6b129 | 311 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
312 | |
313 | /* Read Data Blk size */ | |
42c6b129 | 314 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
e61ef499 AE |
315 | } |
316 | ||
42c6b129 | 317 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 318 | { |
42c6b129 | 319 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
320 | |
321 | BT_DBG("%s %ld", hdev->name, opt); | |
322 | ||
11778716 AE |
323 | /* Reset */ |
324 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 325 | hci_reset_req(req, 0); |
11778716 | 326 | |
e61ef499 AE |
327 | switch (hdev->dev_type) { |
328 | case HCI_BREDR: | |
42c6b129 | 329 | bredr_init(req); |
e61ef499 AE |
330 | break; |
331 | ||
332 | case HCI_AMP: | |
42c6b129 | 333 | amp_init(req); |
e61ef499 AE |
334 | break; |
335 | ||
336 | default: | |
337 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
338 | break; | |
339 | } | |
e61ef499 AE |
340 | } |
341 | ||
42c6b129 | 342 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 343 | { |
2177bab5 JH |
344 | __le16 param; |
345 | __u8 flt_type; | |
346 | ||
347 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 348 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
349 | |
350 | /* Read Class of Device */ | |
42c6b129 | 351 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
352 | |
353 | /* Read Local Name */ | |
42c6b129 | 354 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
355 | |
356 | /* Read Voice Setting */ | |
42c6b129 | 357 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 JH |
358 | |
359 | /* Clear Event Filters */ | |
360 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 361 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
362 | |
363 | /* Connection accept timeout ~20 secs */ | |
364 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 365 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 366 | |
f332ec66 JH |
367 | /* Read page scan parameters */ |
368 | if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
369 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
370 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
371 | } | |
2177bab5 JH |
372 | } |
373 | ||
42c6b129 | 374 | static void le_setup(struct hci_request *req) |
2177bab5 | 375 | { |
c73eee91 JH |
376 | struct hci_dev *hdev = req->hdev; |
377 | ||
2177bab5 | 378 | /* Read LE Buffer Size */ |
42c6b129 | 379 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
380 | |
381 | /* Read LE Local Supported Features */ | |
42c6b129 | 382 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
383 | |
384 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 385 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
386 | |
387 | /* Read LE White List Size */ | |
42c6b129 | 388 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
389 | |
390 | /* Read LE Supported States */ | |
42c6b129 | 391 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
392 | |
393 | /* LE-only controllers have LE implicitly enabled */ | |
394 | if (!lmp_bredr_capable(hdev)) | |
395 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
396 | } |
397 | ||
398 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
399 | { | |
400 | if (lmp_ext_inq_capable(hdev)) | |
401 | return 0x02; | |
402 | ||
403 | if (lmp_inq_rssi_capable(hdev)) | |
404 | return 0x01; | |
405 | ||
406 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
407 | hdev->lmp_subver == 0x0757) | |
408 | return 0x01; | |
409 | ||
410 | if (hdev->manufacturer == 15) { | |
411 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
412 | return 0x01; | |
413 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
414 | return 0x01; | |
415 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
416 | return 0x01; | |
417 | } | |
418 | ||
419 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
420 | hdev->lmp_subver == 0x1805) | |
421 | return 0x01; | |
422 | ||
423 | return 0x00; | |
424 | } | |
425 | ||
42c6b129 | 426 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
427 | { |
428 | u8 mode; | |
429 | ||
42c6b129 | 430 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 431 | |
42c6b129 | 432 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
433 | } |
434 | ||
42c6b129 | 435 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 436 | { |
42c6b129 JH |
437 | struct hci_dev *hdev = req->hdev; |
438 | ||
2177bab5 JH |
439 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
440 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
441 | * command otherwise. | |
442 | */ | |
443 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
444 | ||
445 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
446 | * any event mask for pre 1.2 devices. | |
447 | */ | |
448 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
449 | return; | |
450 | ||
451 | if (lmp_bredr_capable(hdev)) { | |
452 | events[4] |= 0x01; /* Flow Specification Complete */ | |
453 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
454 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
455 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
456 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
457 | } | |
458 | ||
459 | if (lmp_inq_rssi_capable(hdev)) | |
460 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
461 | ||
462 | if (lmp_sniffsubr_capable(hdev)) | |
463 | events[5] |= 0x20; /* Sniff Subrating */ | |
464 | ||
465 | if (lmp_pause_enc_capable(hdev)) | |
466 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
467 | ||
468 | if (lmp_ext_inq_capable(hdev)) | |
469 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
470 | ||
471 | if (lmp_no_flush_capable(hdev)) | |
472 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
473 | ||
474 | if (lmp_lsto_capable(hdev)) | |
475 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
476 | ||
477 | if (lmp_ssp_capable(hdev)) { | |
478 | events[6] |= 0x01; /* IO Capability Request */ | |
479 | events[6] |= 0x02; /* IO Capability Response */ | |
480 | events[6] |= 0x04; /* User Confirmation Request */ | |
481 | events[6] |= 0x08; /* User Passkey Request */ | |
482 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
483 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
484 | events[7] |= 0x04; /* User Passkey Notification */ | |
485 | events[7] |= 0x08; /* Keypress Notification */ | |
486 | events[7] |= 0x10; /* Remote Host Supported | |
487 | * Features Notification | |
488 | */ | |
489 | } | |
490 | ||
491 | if (lmp_le_capable(hdev)) | |
492 | events[7] |= 0x20; /* LE Meta-Event */ | |
493 | ||
42c6b129 | 494 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
495 | |
496 | if (lmp_le_capable(hdev)) { | |
497 | memset(events, 0, sizeof(events)); | |
498 | events[0] = 0x1f; | |
42c6b129 JH |
499 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
500 | sizeof(events), events); | |
2177bab5 JH |
501 | } |
502 | } | |
503 | ||
42c6b129 | 504 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 505 | { |
42c6b129 JH |
506 | struct hci_dev *hdev = req->hdev; |
507 | ||
2177bab5 | 508 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 509 | bredr_setup(req); |
2177bab5 JH |
510 | |
511 | if (lmp_le_capable(hdev)) | |
42c6b129 | 512 | le_setup(req); |
2177bab5 | 513 | |
42c6b129 | 514 | hci_setup_event_mask(req); |
2177bab5 JH |
515 | |
516 | if (hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 517 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
518 | |
519 | if (lmp_ssp_capable(hdev)) { | |
520 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
521 | u8 mode = 0x01; | |
42c6b129 JH |
522 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
523 | sizeof(mode), &mode); | |
2177bab5 JH |
524 | } else { |
525 | struct hci_cp_write_eir cp; | |
526 | ||
527 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
528 | memset(&cp, 0, sizeof(cp)); | |
529 | ||
42c6b129 | 530 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
531 | } |
532 | } | |
533 | ||
534 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 535 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
536 | |
537 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 538 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
539 | |
540 | if (lmp_ext_feat_capable(hdev)) { | |
541 | struct hci_cp_read_local_ext_features cp; | |
542 | ||
543 | cp.page = 0x01; | |
42c6b129 JH |
544 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
545 | sizeof(cp), &cp); | |
2177bab5 JH |
546 | } |
547 | ||
548 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
549 | u8 enable = 1; | |
42c6b129 JH |
550 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
551 | &enable); | |
2177bab5 JH |
552 | } |
553 | } | |
554 | ||
42c6b129 | 555 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 556 | { |
42c6b129 | 557 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
558 | struct hci_cp_write_def_link_policy cp; |
559 | u16 link_policy = 0; | |
560 | ||
561 | if (lmp_rswitch_capable(hdev)) | |
562 | link_policy |= HCI_LP_RSWITCH; | |
563 | if (lmp_hold_capable(hdev)) | |
564 | link_policy |= HCI_LP_HOLD; | |
565 | if (lmp_sniff_capable(hdev)) | |
566 | link_policy |= HCI_LP_SNIFF; | |
567 | if (lmp_park_capable(hdev)) | |
568 | link_policy |= HCI_LP_PARK; | |
569 | ||
570 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 571 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
572 | } |
573 | ||
42c6b129 | 574 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 575 | { |
42c6b129 | 576 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
577 | struct hci_cp_write_le_host_supported cp; |
578 | ||
c73eee91 JH |
579 | /* LE-only devices do not support explicit enablement */ |
580 | if (!lmp_bredr_capable(hdev)) | |
581 | return; | |
582 | ||
2177bab5 JH |
583 | memset(&cp, 0, sizeof(cp)); |
584 | ||
585 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
586 | cp.le = 0x01; | |
587 | cp.simul = lmp_le_br_capable(hdev); | |
588 | } | |
589 | ||
590 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
591 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
592 | &cp); | |
2177bab5 JH |
593 | } |
594 | ||
42c6b129 | 595 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 596 | { |
42c6b129 | 597 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 598 | u8 p; |
42c6b129 | 599 | |
59f45d57 JH |
600 | /* Only send HCI_Delete_Stored_Link_Key if it is supported */ |
601 | if (hdev->commands[6] & 0x80) { | |
602 | struct hci_cp_delete_stored_link_key cp; | |
603 | ||
604 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
605 | cp.delete_all = 0x01; | |
606 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
607 | sizeof(cp), &cp); | |
608 | } | |
609 | ||
2177bab5 | 610 | if (hdev->commands[5] & 0x10) |
42c6b129 | 611 | hci_setup_link_policy(req); |
2177bab5 | 612 | |
04b4edcb | 613 | if (lmp_le_capable(hdev)) { |
42c6b129 | 614 | hci_set_le_support(req); |
04b4edcb JH |
615 | hci_update_ad(req); |
616 | } | |
d2c5d77f JH |
617 | |
618 | /* Read features beyond page 1 if available */ | |
619 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
620 | struct hci_cp_read_local_ext_features cp; | |
621 | ||
622 | cp.page = p; | |
623 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
624 | sizeof(cp), &cp); | |
625 | } | |
2177bab5 JH |
626 | } |
627 | ||
628 | static int __hci_init(struct hci_dev *hdev) | |
629 | { | |
630 | int err; | |
631 | ||
632 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
633 | if (err < 0) | |
634 | return err; | |
635 | ||
636 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
637 | * BR/EDR/LE type controllers. AMP controllers only need the | |
638 | * first stage init. | |
639 | */ | |
640 | if (hdev->dev_type != HCI_BREDR) | |
641 | return 0; | |
642 | ||
643 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
644 | if (err < 0) | |
645 | return err; | |
646 | ||
647 | return __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); | |
648 | } | |
649 | ||
42c6b129 | 650 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
651 | { |
652 | __u8 scan = opt; | |
653 | ||
42c6b129 | 654 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
655 | |
656 | /* Inquiry and Page scans */ | |
42c6b129 | 657 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
658 | } |
659 | ||
42c6b129 | 660 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
661 | { |
662 | __u8 auth = opt; | |
663 | ||
42c6b129 | 664 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
665 | |
666 | /* Authentication */ | |
42c6b129 | 667 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
668 | } |
669 | ||
42c6b129 | 670 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
671 | { |
672 | __u8 encrypt = opt; | |
673 | ||
42c6b129 | 674 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 675 | |
e4e8e37c | 676 | /* Encryption */ |
42c6b129 | 677 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
678 | } |
679 | ||
42c6b129 | 680 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
681 | { |
682 | __le16 policy = cpu_to_le16(opt); | |
683 | ||
42c6b129 | 684 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
685 | |
686 | /* Default link policy */ | |
42c6b129 | 687 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
688 | } |
689 | ||
8e87d142 | 690 | /* Get HCI device by index. |
1da177e4 LT |
691 | * Device is held on return. */ |
692 | struct hci_dev *hci_dev_get(int index) | |
693 | { | |
8035ded4 | 694 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
695 | |
696 | BT_DBG("%d", index); | |
697 | ||
698 | if (index < 0) | |
699 | return NULL; | |
700 | ||
701 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 702 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
703 | if (d->id == index) { |
704 | hdev = hci_dev_hold(d); | |
705 | break; | |
706 | } | |
707 | } | |
708 | read_unlock(&hci_dev_list_lock); | |
709 | return hdev; | |
710 | } | |
1da177e4 LT |
711 | |
712 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 713 | |
30dc78e1 JH |
714 | bool hci_discovery_active(struct hci_dev *hdev) |
715 | { | |
716 | struct discovery_state *discov = &hdev->discovery; | |
717 | ||
6fbe195d | 718 | switch (discov->state) { |
343f935b | 719 | case DISCOVERY_FINDING: |
6fbe195d | 720 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
721 | return true; |
722 | ||
6fbe195d AG |
723 | default: |
724 | return false; | |
725 | } | |
30dc78e1 JH |
726 | } |
727 | ||
ff9ef578 JH |
728 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
729 | { | |
730 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
731 | ||
732 | if (hdev->discovery.state == state) | |
733 | return; | |
734 | ||
735 | switch (state) { | |
736 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
737 | if (hdev->discovery.state != DISCOVERY_STARTING) |
738 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
739 | break; |
740 | case DISCOVERY_STARTING: | |
741 | break; | |
343f935b | 742 | case DISCOVERY_FINDING: |
ff9ef578 JH |
743 | mgmt_discovering(hdev, 1); |
744 | break; | |
30dc78e1 JH |
745 | case DISCOVERY_RESOLVING: |
746 | break; | |
ff9ef578 JH |
747 | case DISCOVERY_STOPPING: |
748 | break; | |
749 | } | |
750 | ||
751 | hdev->discovery.state = state; | |
752 | } | |
753 | ||
1da177e4 LT |
754 | static void inquiry_cache_flush(struct hci_dev *hdev) |
755 | { | |
30883512 | 756 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 757 | struct inquiry_entry *p, *n; |
1da177e4 | 758 | |
561aafbc JH |
759 | list_for_each_entry_safe(p, n, &cache->all, all) { |
760 | list_del(&p->all); | |
b57c1a56 | 761 | kfree(p); |
1da177e4 | 762 | } |
561aafbc JH |
763 | |
764 | INIT_LIST_HEAD(&cache->unknown); | |
765 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
766 | } |
767 | ||
a8c5fb1a GP |
768 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
769 | bdaddr_t *bdaddr) | |
1da177e4 | 770 | { |
30883512 | 771 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
772 | struct inquiry_entry *e; |
773 | ||
6ed93dc6 | 774 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 775 | |
561aafbc JH |
776 | list_for_each_entry(e, &cache->all, all) { |
777 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
778 | return e; | |
779 | } | |
780 | ||
781 | return NULL; | |
782 | } | |
783 | ||
784 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 785 | bdaddr_t *bdaddr) |
561aafbc | 786 | { |
30883512 | 787 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
788 | struct inquiry_entry *e; |
789 | ||
6ed93dc6 | 790 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
791 | |
792 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 793 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
794 | return e; |
795 | } | |
796 | ||
797 | return NULL; | |
1da177e4 LT |
798 | } |
799 | ||
30dc78e1 | 800 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
801 | bdaddr_t *bdaddr, |
802 | int state) | |
30dc78e1 JH |
803 | { |
804 | struct discovery_state *cache = &hdev->discovery; | |
805 | struct inquiry_entry *e; | |
806 | ||
6ed93dc6 | 807 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
808 | |
809 | list_for_each_entry(e, &cache->resolve, list) { | |
810 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
811 | return e; | |
812 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
813 | return e; | |
814 | } | |
815 | ||
816 | return NULL; | |
817 | } | |
818 | ||
a3d4e20a | 819 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 820 | struct inquiry_entry *ie) |
a3d4e20a JH |
821 | { |
822 | struct discovery_state *cache = &hdev->discovery; | |
823 | struct list_head *pos = &cache->resolve; | |
824 | struct inquiry_entry *p; | |
825 | ||
826 | list_del(&ie->list); | |
827 | ||
828 | list_for_each_entry(p, &cache->resolve, list) { | |
829 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 830 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
831 | break; |
832 | pos = &p->list; | |
833 | } | |
834 | ||
835 | list_add(&ie->list, pos); | |
836 | } | |
837 | ||
3175405b | 838 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 839 | bool name_known, bool *ssp) |
1da177e4 | 840 | { |
30883512 | 841 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 842 | struct inquiry_entry *ie; |
1da177e4 | 843 | |
6ed93dc6 | 844 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 845 | |
2b2fec4d SJ |
846 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
847 | ||
388fc8fa JH |
848 | if (ssp) |
849 | *ssp = data->ssp_mode; | |
850 | ||
70f23020 | 851 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 852 | if (ie) { |
388fc8fa JH |
853 | if (ie->data.ssp_mode && ssp) |
854 | *ssp = true; | |
855 | ||
a3d4e20a | 856 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 857 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
858 | ie->data.rssi = data->rssi; |
859 | hci_inquiry_cache_update_resolve(hdev, ie); | |
860 | } | |
861 | ||
561aafbc | 862 | goto update; |
a3d4e20a | 863 | } |
561aafbc JH |
864 | |
865 | /* Entry not in the cache. Add new one. */ | |
866 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
867 | if (!ie) | |
3175405b | 868 | return false; |
561aafbc JH |
869 | |
870 | list_add(&ie->all, &cache->all); | |
871 | ||
872 | if (name_known) { | |
873 | ie->name_state = NAME_KNOWN; | |
874 | } else { | |
875 | ie->name_state = NAME_NOT_KNOWN; | |
876 | list_add(&ie->list, &cache->unknown); | |
877 | } | |
70f23020 | 878 | |
561aafbc JH |
879 | update: |
880 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 881 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
882 | ie->name_state = NAME_KNOWN; |
883 | list_del(&ie->list); | |
1da177e4 LT |
884 | } |
885 | ||
70f23020 AE |
886 | memcpy(&ie->data, data, sizeof(*data)); |
887 | ie->timestamp = jiffies; | |
1da177e4 | 888 | cache->timestamp = jiffies; |
3175405b JH |
889 | |
890 | if (ie->name_state == NAME_NOT_KNOWN) | |
891 | return false; | |
892 | ||
893 | return true; | |
1da177e4 LT |
894 | } |
895 | ||
896 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
897 | { | |
30883512 | 898 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
899 | struct inquiry_info *info = (struct inquiry_info *) buf; |
900 | struct inquiry_entry *e; | |
901 | int copied = 0; | |
902 | ||
561aafbc | 903 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 904 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
905 | |
906 | if (copied >= num) | |
907 | break; | |
908 | ||
1da177e4 LT |
909 | bacpy(&info->bdaddr, &data->bdaddr); |
910 | info->pscan_rep_mode = data->pscan_rep_mode; | |
911 | info->pscan_period_mode = data->pscan_period_mode; | |
912 | info->pscan_mode = data->pscan_mode; | |
913 | memcpy(info->dev_class, data->dev_class, 3); | |
914 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 915 | |
1da177e4 | 916 | info++; |
b57c1a56 | 917 | copied++; |
1da177e4 LT |
918 | } |
919 | ||
920 | BT_DBG("cache %p, copied %d", cache, copied); | |
921 | return copied; | |
922 | } | |
923 | ||
42c6b129 | 924 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
925 | { |
926 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 927 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
928 | struct hci_cp_inquiry cp; |
929 | ||
930 | BT_DBG("%s", hdev->name); | |
931 | ||
932 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
933 | return; | |
934 | ||
935 | /* Start Inquiry */ | |
936 | memcpy(&cp.lap, &ir->lap, 3); | |
937 | cp.length = ir->length; | |
938 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 939 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
940 | } |
941 | ||
3e13fa1e AG |
942 | static int wait_inquiry(void *word) |
943 | { | |
944 | schedule(); | |
945 | return signal_pending(current); | |
946 | } | |
947 | ||
1da177e4 LT |
948 | int hci_inquiry(void __user *arg) |
949 | { | |
950 | __u8 __user *ptr = arg; | |
951 | struct hci_inquiry_req ir; | |
952 | struct hci_dev *hdev; | |
953 | int err = 0, do_inquiry = 0, max_rsp; | |
954 | long timeo; | |
955 | __u8 *buf; | |
956 | ||
957 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
958 | return -EFAULT; | |
959 | ||
5a08ecce AE |
960 | hdev = hci_dev_get(ir.dev_id); |
961 | if (!hdev) | |
1da177e4 LT |
962 | return -ENODEV; |
963 | ||
09fd0de5 | 964 | hci_dev_lock(hdev); |
8e87d142 | 965 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 966 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
967 | inquiry_cache_flush(hdev); |
968 | do_inquiry = 1; | |
969 | } | |
09fd0de5 | 970 | hci_dev_unlock(hdev); |
1da177e4 | 971 | |
04837f64 | 972 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
973 | |
974 | if (do_inquiry) { | |
01178cd4 JH |
975 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
976 | timeo); | |
70f23020 AE |
977 | if (err < 0) |
978 | goto done; | |
3e13fa1e AG |
979 | |
980 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
981 | * cleared). If it is interrupted by a signal, return -EINTR. | |
982 | */ | |
983 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
984 | TASK_INTERRUPTIBLE)) | |
985 | return -EINTR; | |
70f23020 | 986 | } |
1da177e4 | 987 | |
8fc9ced3 GP |
988 | /* for unlimited number of responses we will use buffer with |
989 | * 255 entries | |
990 | */ | |
1da177e4 LT |
991 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
992 | ||
993 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
994 | * copy it to the user space. | |
995 | */ | |
01df8c31 | 996 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 997 | if (!buf) { |
1da177e4 LT |
998 | err = -ENOMEM; |
999 | goto done; | |
1000 | } | |
1001 | ||
09fd0de5 | 1002 | hci_dev_lock(hdev); |
1da177e4 | 1003 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1004 | hci_dev_unlock(hdev); |
1da177e4 LT |
1005 | |
1006 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1007 | ||
1008 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1009 | ptr += sizeof(ir); | |
1010 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1011 | ir.num_rsp)) |
1da177e4 | 1012 | err = -EFAULT; |
8e87d142 | 1013 | } else |
1da177e4 LT |
1014 | err = -EFAULT; |
1015 | ||
1016 | kfree(buf); | |
1017 | ||
1018 | done: | |
1019 | hci_dev_put(hdev); | |
1020 | return err; | |
1021 | } | |
1022 | ||
3f0f524b JH |
1023 | static u8 create_ad(struct hci_dev *hdev, u8 *ptr) |
1024 | { | |
1025 | u8 ad_len = 0, flags = 0; | |
1026 | size_t name_len; | |
1027 | ||
1028 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) | |
1029 | flags |= LE_AD_GENERAL; | |
1030 | ||
1031 | if (!lmp_bredr_capable(hdev)) | |
1032 | flags |= LE_AD_NO_BREDR; | |
1033 | ||
1034 | if (lmp_le_br_capable(hdev)) | |
1035 | flags |= LE_AD_SIM_LE_BREDR_CTRL; | |
1036 | ||
1037 | if (lmp_host_le_br_capable(hdev)) | |
1038 | flags |= LE_AD_SIM_LE_BREDR_HOST; | |
1039 | ||
1040 | if (flags) { | |
1041 | BT_DBG("adv flags 0x%02x", flags); | |
1042 | ||
1043 | ptr[0] = 2; | |
1044 | ptr[1] = EIR_FLAGS; | |
1045 | ptr[2] = flags; | |
1046 | ||
1047 | ad_len += 3; | |
1048 | ptr += 3; | |
1049 | } | |
1050 | ||
1051 | if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) { | |
1052 | ptr[0] = 2; | |
1053 | ptr[1] = EIR_TX_POWER; | |
1054 | ptr[2] = (u8) hdev->adv_tx_power; | |
1055 | ||
1056 | ad_len += 3; | |
1057 | ptr += 3; | |
1058 | } | |
1059 | ||
1060 | name_len = strlen(hdev->dev_name); | |
1061 | if (name_len > 0) { | |
1062 | size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; | |
1063 | ||
1064 | if (name_len > max_len) { | |
1065 | name_len = max_len; | |
1066 | ptr[1] = EIR_NAME_SHORT; | |
1067 | } else | |
1068 | ptr[1] = EIR_NAME_COMPLETE; | |
1069 | ||
1070 | ptr[0] = name_len + 1; | |
1071 | ||
1072 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
1073 | ||
1074 | ad_len += (name_len + 2); | |
1075 | ptr += (name_len + 2); | |
1076 | } | |
1077 | ||
1078 | return ad_len; | |
1079 | } | |
1080 | ||
04b4edcb | 1081 | void hci_update_ad(struct hci_request *req) |
3f0f524b | 1082 | { |
04b4edcb | 1083 | struct hci_dev *hdev = req->hdev; |
3f0f524b JH |
1084 | struct hci_cp_le_set_adv_data cp; |
1085 | u8 len; | |
3f0f524b | 1086 | |
04b4edcb JH |
1087 | if (!lmp_le_capable(hdev)) |
1088 | return; | |
3f0f524b JH |
1089 | |
1090 | memset(&cp, 0, sizeof(cp)); | |
1091 | ||
1092 | len = create_ad(hdev, cp.data); | |
1093 | ||
1094 | if (hdev->adv_data_len == len && | |
04b4edcb JH |
1095 | memcmp(cp.data, hdev->adv_data, len) == 0) |
1096 | return; | |
3f0f524b JH |
1097 | |
1098 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1099 | hdev->adv_data_len = len; | |
1100 | ||
1101 | cp.length = len; | |
3f0f524b | 1102 | |
04b4edcb | 1103 | hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); |
3f0f524b JH |
1104 | } |
1105 | ||
1da177e4 LT |
1106 | /* ---- HCI ioctl helpers ---- */ |
1107 | ||
1108 | int hci_dev_open(__u16 dev) | |
1109 | { | |
1110 | struct hci_dev *hdev; | |
1111 | int ret = 0; | |
1112 | ||
5a08ecce AE |
1113 | hdev = hci_dev_get(dev); |
1114 | if (!hdev) | |
1da177e4 LT |
1115 | return -ENODEV; |
1116 | ||
1117 | BT_DBG("%s %p", hdev->name, hdev); | |
1118 | ||
1119 | hci_req_lock(hdev); | |
1120 | ||
94324962 JH |
1121 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1122 | ret = -ENODEV; | |
1123 | goto done; | |
1124 | } | |
1125 | ||
611b30f7 MH |
1126 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
1127 | ret = -ERFKILL; | |
1128 | goto done; | |
1129 | } | |
1130 | ||
1da177e4 LT |
1131 | if (test_bit(HCI_UP, &hdev->flags)) { |
1132 | ret = -EALREADY; | |
1133 | goto done; | |
1134 | } | |
1135 | ||
1da177e4 LT |
1136 | if (hdev->open(hdev)) { |
1137 | ret = -EIO; | |
1138 | goto done; | |
1139 | } | |
1140 | ||
f41c70c4 MH |
1141 | atomic_set(&hdev->cmd_cnt, 1); |
1142 | set_bit(HCI_INIT, &hdev->flags); | |
1143 | ||
1144 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1145 | ret = hdev->setup(hdev); | |
1146 | ||
1147 | if (!ret) { | |
1148 | /* Treat all non BR/EDR controllers as raw devices if | |
1149 | * enable_hs is not set. | |
1150 | */ | |
1151 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
1152 | set_bit(HCI_RAW, &hdev->flags); | |
1153 | ||
1154 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
1155 | set_bit(HCI_RAW, &hdev->flags); | |
1156 | ||
1157 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
1158 | ret = __hci_init(hdev); | |
1da177e4 LT |
1159 | } |
1160 | ||
f41c70c4 MH |
1161 | clear_bit(HCI_INIT, &hdev->flags); |
1162 | ||
1da177e4 LT |
1163 | if (!ret) { |
1164 | hci_dev_hold(hdev); | |
1165 | set_bit(HCI_UP, &hdev->flags); | |
1166 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a AE |
1167 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
1168 | mgmt_valid_hdev(hdev)) { | |
09fd0de5 | 1169 | hci_dev_lock(hdev); |
744cf19e | 1170 | mgmt_powered(hdev, 1); |
09fd0de5 | 1171 | hci_dev_unlock(hdev); |
56e5cb86 | 1172 | } |
8e87d142 | 1173 | } else { |
1da177e4 | 1174 | /* Init failed, cleanup */ |
3eff45ea | 1175 | flush_work(&hdev->tx_work); |
c347b765 | 1176 | flush_work(&hdev->cmd_work); |
b78752cc | 1177 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1178 | |
1179 | skb_queue_purge(&hdev->cmd_q); | |
1180 | skb_queue_purge(&hdev->rx_q); | |
1181 | ||
1182 | if (hdev->flush) | |
1183 | hdev->flush(hdev); | |
1184 | ||
1185 | if (hdev->sent_cmd) { | |
1186 | kfree_skb(hdev->sent_cmd); | |
1187 | hdev->sent_cmd = NULL; | |
1188 | } | |
1189 | ||
1190 | hdev->close(hdev); | |
1191 | hdev->flags = 0; | |
1192 | } | |
1193 | ||
1194 | done: | |
1195 | hci_req_unlock(hdev); | |
1196 | hci_dev_put(hdev); | |
1197 | return ret; | |
1198 | } | |
1199 | ||
1200 | static int hci_dev_do_close(struct hci_dev *hdev) | |
1201 | { | |
1202 | BT_DBG("%s %p", hdev->name, hdev); | |
1203 | ||
28b75a89 AG |
1204 | cancel_work_sync(&hdev->le_scan); |
1205 | ||
78c04c0b VCG |
1206 | cancel_delayed_work(&hdev->power_off); |
1207 | ||
1da177e4 LT |
1208 | hci_req_cancel(hdev, ENODEV); |
1209 | hci_req_lock(hdev); | |
1210 | ||
1211 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1212 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1213 | hci_req_unlock(hdev); |
1214 | return 0; | |
1215 | } | |
1216 | ||
3eff45ea GP |
1217 | /* Flush RX and TX works */ |
1218 | flush_work(&hdev->tx_work); | |
b78752cc | 1219 | flush_work(&hdev->rx_work); |
1da177e4 | 1220 | |
16ab91ab | 1221 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1222 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1223 | hdev->discov_timeout = 0; |
5e5282bb | 1224 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1225 | } |
1226 | ||
a8b2d5c2 | 1227 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1228 | cancel_delayed_work(&hdev->service_cache); |
1229 | ||
7ba8b4be AG |
1230 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1231 | ||
09fd0de5 | 1232 | hci_dev_lock(hdev); |
1da177e4 LT |
1233 | inquiry_cache_flush(hdev); |
1234 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 1235 | hci_dev_unlock(hdev); |
1da177e4 LT |
1236 | |
1237 | hci_notify(hdev, HCI_DEV_DOWN); | |
1238 | ||
1239 | if (hdev->flush) | |
1240 | hdev->flush(hdev); | |
1241 | ||
1242 | /* Reset device */ | |
1243 | skb_queue_purge(&hdev->cmd_q); | |
1244 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1245 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 1246 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1247 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1248 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1249 | clear_bit(HCI_INIT, &hdev->flags); |
1250 | } | |
1251 | ||
c347b765 GP |
1252 | /* flush cmd work */ |
1253 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1254 | |
1255 | /* Drop queues */ | |
1256 | skb_queue_purge(&hdev->rx_q); | |
1257 | skb_queue_purge(&hdev->cmd_q); | |
1258 | skb_queue_purge(&hdev->raw_q); | |
1259 | ||
1260 | /* Drop last sent command */ | |
1261 | if (hdev->sent_cmd) { | |
b79f44c1 | 1262 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1263 | kfree_skb(hdev->sent_cmd); |
1264 | hdev->sent_cmd = NULL; | |
1265 | } | |
1266 | ||
b6ddb638 JH |
1267 | kfree_skb(hdev->recv_evt); |
1268 | hdev->recv_evt = NULL; | |
1269 | ||
1da177e4 LT |
1270 | /* After this point our queues are empty |
1271 | * and no tasks are scheduled. */ | |
1272 | hdev->close(hdev); | |
1273 | ||
35b973c9 JH |
1274 | /* Clear flags */ |
1275 | hdev->flags = 0; | |
1276 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1277 | ||
bb4b2a9a AE |
1278 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
1279 | mgmt_valid_hdev(hdev)) { | |
8ee56540 MH |
1280 | hci_dev_lock(hdev); |
1281 | mgmt_powered(hdev, 0); | |
1282 | hci_dev_unlock(hdev); | |
1283 | } | |
5add6af8 | 1284 | |
ced5c338 AE |
1285 | /* Controller radio is available but is currently powered down */ |
1286 | hdev->amp_status = 0; | |
1287 | ||
e59fda8d | 1288 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1289 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1290 | |
1da177e4 LT |
1291 | hci_req_unlock(hdev); |
1292 | ||
1293 | hci_dev_put(hdev); | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | int hci_dev_close(__u16 dev) | |
1298 | { | |
1299 | struct hci_dev *hdev; | |
1300 | int err; | |
1301 | ||
70f23020 AE |
1302 | hdev = hci_dev_get(dev); |
1303 | if (!hdev) | |
1da177e4 | 1304 | return -ENODEV; |
8ee56540 MH |
1305 | |
1306 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1307 | cancel_delayed_work(&hdev->power_off); | |
1308 | ||
1da177e4 | 1309 | err = hci_dev_do_close(hdev); |
8ee56540 | 1310 | |
1da177e4 LT |
1311 | hci_dev_put(hdev); |
1312 | return err; | |
1313 | } | |
1314 | ||
1315 | int hci_dev_reset(__u16 dev) | |
1316 | { | |
1317 | struct hci_dev *hdev; | |
1318 | int ret = 0; | |
1319 | ||
70f23020 AE |
1320 | hdev = hci_dev_get(dev); |
1321 | if (!hdev) | |
1da177e4 LT |
1322 | return -ENODEV; |
1323 | ||
1324 | hci_req_lock(hdev); | |
1da177e4 LT |
1325 | |
1326 | if (!test_bit(HCI_UP, &hdev->flags)) | |
1327 | goto done; | |
1328 | ||
1329 | /* Drop queues */ | |
1330 | skb_queue_purge(&hdev->rx_q); | |
1331 | skb_queue_purge(&hdev->cmd_q); | |
1332 | ||
09fd0de5 | 1333 | hci_dev_lock(hdev); |
1da177e4 LT |
1334 | inquiry_cache_flush(hdev); |
1335 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 1336 | hci_dev_unlock(hdev); |
1da177e4 LT |
1337 | |
1338 | if (hdev->flush) | |
1339 | hdev->flush(hdev); | |
1340 | ||
8e87d142 | 1341 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1342 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1343 | |
1344 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1345 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1346 | |
1347 | done: | |
1da177e4 LT |
1348 | hci_req_unlock(hdev); |
1349 | hci_dev_put(hdev); | |
1350 | return ret; | |
1351 | } | |
1352 | ||
1353 | int hci_dev_reset_stat(__u16 dev) | |
1354 | { | |
1355 | struct hci_dev *hdev; | |
1356 | int ret = 0; | |
1357 | ||
70f23020 AE |
1358 | hdev = hci_dev_get(dev); |
1359 | if (!hdev) | |
1da177e4 LT |
1360 | return -ENODEV; |
1361 | ||
1362 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
1363 | ||
1364 | hci_dev_put(hdev); | |
1365 | ||
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1370 | { | |
1371 | struct hci_dev *hdev; | |
1372 | struct hci_dev_req dr; | |
1373 | int err = 0; | |
1374 | ||
1375 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1376 | return -EFAULT; | |
1377 | ||
70f23020 AE |
1378 | hdev = hci_dev_get(dr.dev_id); |
1379 | if (!hdev) | |
1da177e4 LT |
1380 | return -ENODEV; |
1381 | ||
1382 | switch (cmd) { | |
1383 | case HCISETAUTH: | |
01178cd4 JH |
1384 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1385 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1386 | break; |
1387 | ||
1388 | case HCISETENCRYPT: | |
1389 | if (!lmp_encrypt_capable(hdev)) { | |
1390 | err = -EOPNOTSUPP; | |
1391 | break; | |
1392 | } | |
1393 | ||
1394 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1395 | /* Auth must be enabled first */ | |
01178cd4 JH |
1396 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1397 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1398 | if (err) |
1399 | break; | |
1400 | } | |
1401 | ||
01178cd4 JH |
1402 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1403 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1404 | break; |
1405 | ||
1406 | case HCISETSCAN: | |
01178cd4 JH |
1407 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1408 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1409 | break; |
1410 | ||
1da177e4 | 1411 | case HCISETLINKPOL: |
01178cd4 JH |
1412 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1413 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1414 | break; |
1415 | ||
1416 | case HCISETLINKMODE: | |
e4e8e37c MH |
1417 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1418 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1419 | break; | |
1420 | ||
1421 | case HCISETPTYPE: | |
1422 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1423 | break; |
1424 | ||
1425 | case HCISETACLMTU: | |
e4e8e37c MH |
1426 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1427 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1428 | break; |
1429 | ||
1430 | case HCISETSCOMTU: | |
e4e8e37c MH |
1431 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1432 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1433 | break; |
1434 | ||
1435 | default: | |
1436 | err = -EINVAL; | |
1437 | break; | |
1438 | } | |
e4e8e37c | 1439 | |
1da177e4 LT |
1440 | hci_dev_put(hdev); |
1441 | return err; | |
1442 | } | |
1443 | ||
1444 | int hci_get_dev_list(void __user *arg) | |
1445 | { | |
8035ded4 | 1446 | struct hci_dev *hdev; |
1da177e4 LT |
1447 | struct hci_dev_list_req *dl; |
1448 | struct hci_dev_req *dr; | |
1da177e4 LT |
1449 | int n = 0, size, err; |
1450 | __u16 dev_num; | |
1451 | ||
1452 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1453 | return -EFAULT; | |
1454 | ||
1455 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1456 | return -EINVAL; | |
1457 | ||
1458 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1459 | ||
70f23020 AE |
1460 | dl = kzalloc(size, GFP_KERNEL); |
1461 | if (!dl) | |
1da177e4 LT |
1462 | return -ENOMEM; |
1463 | ||
1464 | dr = dl->dev_req; | |
1465 | ||
f20d09d5 | 1466 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1467 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1468 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1469 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1470 | |
a8b2d5c2 JH |
1471 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1472 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1473 | |
1da177e4 LT |
1474 | (dr + n)->dev_id = hdev->id; |
1475 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1476 | |
1da177e4 LT |
1477 | if (++n >= dev_num) |
1478 | break; | |
1479 | } | |
f20d09d5 | 1480 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1481 | |
1482 | dl->dev_num = n; | |
1483 | size = sizeof(*dl) + n * sizeof(*dr); | |
1484 | ||
1485 | err = copy_to_user(arg, dl, size); | |
1486 | kfree(dl); | |
1487 | ||
1488 | return err ? -EFAULT : 0; | |
1489 | } | |
1490 | ||
1491 | int hci_get_dev_info(void __user *arg) | |
1492 | { | |
1493 | struct hci_dev *hdev; | |
1494 | struct hci_dev_info di; | |
1495 | int err = 0; | |
1496 | ||
1497 | if (copy_from_user(&di, arg, sizeof(di))) | |
1498 | return -EFAULT; | |
1499 | ||
70f23020 AE |
1500 | hdev = hci_dev_get(di.dev_id); |
1501 | if (!hdev) | |
1da177e4 LT |
1502 | return -ENODEV; |
1503 | ||
a8b2d5c2 | 1504 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1505 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1506 | |
a8b2d5c2 JH |
1507 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1508 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1509 | |
1da177e4 LT |
1510 | strcpy(di.name, hdev->name); |
1511 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1512 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1513 | di.flags = hdev->flags; |
1514 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1515 | if (lmp_bredr_capable(hdev)) { |
1516 | di.acl_mtu = hdev->acl_mtu; | |
1517 | di.acl_pkts = hdev->acl_pkts; | |
1518 | di.sco_mtu = hdev->sco_mtu; | |
1519 | di.sco_pkts = hdev->sco_pkts; | |
1520 | } else { | |
1521 | di.acl_mtu = hdev->le_mtu; | |
1522 | di.acl_pkts = hdev->le_pkts; | |
1523 | di.sco_mtu = 0; | |
1524 | di.sco_pkts = 0; | |
1525 | } | |
1da177e4 LT |
1526 | di.link_policy = hdev->link_policy; |
1527 | di.link_mode = hdev->link_mode; | |
1528 | ||
1529 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1530 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1531 | ||
1532 | if (copy_to_user(arg, &di, sizeof(di))) | |
1533 | err = -EFAULT; | |
1534 | ||
1535 | hci_dev_put(hdev); | |
1536 | ||
1537 | return err; | |
1538 | } | |
1539 | ||
1540 | /* ---- Interface to HCI drivers ---- */ | |
1541 | ||
611b30f7 MH |
1542 | static int hci_rfkill_set_block(void *data, bool blocked) |
1543 | { | |
1544 | struct hci_dev *hdev = data; | |
1545 | ||
1546 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1547 | ||
1548 | if (!blocked) | |
1549 | return 0; | |
1550 | ||
1551 | hci_dev_do_close(hdev); | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | static const struct rfkill_ops hci_rfkill_ops = { | |
1557 | .set_block = hci_rfkill_set_block, | |
1558 | }; | |
1559 | ||
ab81cbf9 JH |
1560 | static void hci_power_on(struct work_struct *work) |
1561 | { | |
1562 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1563 | int err; |
ab81cbf9 JH |
1564 | |
1565 | BT_DBG("%s", hdev->name); | |
1566 | ||
96570ffc JH |
1567 | err = hci_dev_open(hdev->id); |
1568 | if (err < 0) { | |
1569 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 1570 | return; |
96570ffc | 1571 | } |
ab81cbf9 | 1572 | |
a8b2d5c2 | 1573 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
19202573 JH |
1574 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1575 | HCI_AUTO_OFF_TIMEOUT); | |
ab81cbf9 | 1576 | |
a8b2d5c2 | 1577 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1578 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1579 | } |
1580 | ||
1581 | static void hci_power_off(struct work_struct *work) | |
1582 | { | |
3243553f | 1583 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1584 | power_off.work); |
ab81cbf9 JH |
1585 | |
1586 | BT_DBG("%s", hdev->name); | |
1587 | ||
8ee56540 | 1588 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1589 | } |
1590 | ||
16ab91ab JH |
1591 | static void hci_discov_off(struct work_struct *work) |
1592 | { | |
1593 | struct hci_dev *hdev; | |
1594 | u8 scan = SCAN_PAGE; | |
1595 | ||
1596 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1597 | ||
1598 | BT_DBG("%s", hdev->name); | |
1599 | ||
09fd0de5 | 1600 | hci_dev_lock(hdev); |
16ab91ab JH |
1601 | |
1602 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1603 | ||
1604 | hdev->discov_timeout = 0; | |
1605 | ||
09fd0de5 | 1606 | hci_dev_unlock(hdev); |
16ab91ab JH |
1607 | } |
1608 | ||
2aeb9a1a JH |
1609 | int hci_uuids_clear(struct hci_dev *hdev) |
1610 | { | |
4821002c | 1611 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1612 | |
4821002c JH |
1613 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1614 | list_del(&uuid->list); | |
2aeb9a1a JH |
1615 | kfree(uuid); |
1616 | } | |
1617 | ||
1618 | return 0; | |
1619 | } | |
1620 | ||
55ed8ca1 JH |
1621 | int hci_link_keys_clear(struct hci_dev *hdev) |
1622 | { | |
1623 | struct list_head *p, *n; | |
1624 | ||
1625 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1626 | struct link_key *key; | |
1627 | ||
1628 | key = list_entry(p, struct link_key, list); | |
1629 | ||
1630 | list_del(p); | |
1631 | kfree(key); | |
1632 | } | |
1633 | ||
1634 | return 0; | |
1635 | } | |
1636 | ||
b899efaf VCG |
1637 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1638 | { | |
1639 | struct smp_ltk *k, *tmp; | |
1640 | ||
1641 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1642 | list_del(&k->list); | |
1643 | kfree(k); | |
1644 | } | |
1645 | ||
1646 | return 0; | |
1647 | } | |
1648 | ||
55ed8ca1 JH |
1649 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1650 | { | |
8035ded4 | 1651 | struct link_key *k; |
55ed8ca1 | 1652 | |
8035ded4 | 1653 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1654 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1655 | return k; | |
55ed8ca1 JH |
1656 | |
1657 | return NULL; | |
1658 | } | |
1659 | ||
745c0ce3 | 1660 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1661 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1662 | { |
1663 | /* Legacy key */ | |
1664 | if (key_type < 0x03) | |
745c0ce3 | 1665 | return true; |
d25e28ab JH |
1666 | |
1667 | /* Debug keys are insecure so don't store them persistently */ | |
1668 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1669 | return false; |
d25e28ab JH |
1670 | |
1671 | /* Changed combination key and there's no previous one */ | |
1672 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1673 | return false; |
d25e28ab JH |
1674 | |
1675 | /* Security mode 3 case */ | |
1676 | if (!conn) | |
745c0ce3 | 1677 | return true; |
d25e28ab JH |
1678 | |
1679 | /* Neither local nor remote side had no-bonding as requirement */ | |
1680 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1681 | return true; |
d25e28ab JH |
1682 | |
1683 | /* Local side had dedicated bonding as requirement */ | |
1684 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1685 | return true; |
d25e28ab JH |
1686 | |
1687 | /* Remote side had dedicated bonding as requirement */ | |
1688 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1689 | return true; |
d25e28ab JH |
1690 | |
1691 | /* If none of the above criteria match, then don't store the key | |
1692 | * persistently */ | |
745c0ce3 | 1693 | return false; |
d25e28ab JH |
1694 | } |
1695 | ||
c9839a11 | 1696 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1697 | { |
c9839a11 | 1698 | struct smp_ltk *k; |
75d262c2 | 1699 | |
c9839a11 VCG |
1700 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1701 | if (k->ediv != ediv || | |
a8c5fb1a | 1702 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1703 | continue; |
1704 | ||
c9839a11 | 1705 | return k; |
75d262c2 VCG |
1706 | } |
1707 | ||
1708 | return NULL; | |
1709 | } | |
75d262c2 | 1710 | |
c9839a11 | 1711 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1712 | u8 addr_type) |
75d262c2 | 1713 | { |
c9839a11 | 1714 | struct smp_ltk *k; |
75d262c2 | 1715 | |
c9839a11 VCG |
1716 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1717 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1718 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1719 | return k; |
1720 | ||
1721 | return NULL; | |
1722 | } | |
75d262c2 | 1723 | |
d25e28ab | 1724 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1725 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1726 | { |
1727 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1728 | u8 old_key_type; |
1729 | bool persistent; | |
55ed8ca1 JH |
1730 | |
1731 | old_key = hci_find_link_key(hdev, bdaddr); | |
1732 | if (old_key) { | |
1733 | old_key_type = old_key->type; | |
1734 | key = old_key; | |
1735 | } else { | |
12adcf3a | 1736 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1737 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1738 | if (!key) | |
1739 | return -ENOMEM; | |
1740 | list_add(&key->list, &hdev->link_keys); | |
1741 | } | |
1742 | ||
6ed93dc6 | 1743 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1744 | |
d25e28ab JH |
1745 | /* Some buggy controller combinations generate a changed |
1746 | * combination key for legacy pairing even when there's no | |
1747 | * previous key */ | |
1748 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1749 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1750 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1751 | if (conn) |
1752 | conn->key_type = type; | |
1753 | } | |
d25e28ab | 1754 | |
55ed8ca1 | 1755 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1756 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1757 | key->pin_len = pin_len; |
1758 | ||
b6020ba0 | 1759 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1760 | key->type = old_key_type; |
4748fed2 JH |
1761 | else |
1762 | key->type = type; | |
1763 | ||
4df378a1 JH |
1764 | if (!new_key) |
1765 | return 0; | |
1766 | ||
1767 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1768 | ||
744cf19e | 1769 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1770 | |
6ec5bcad VA |
1771 | if (conn) |
1772 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1773 | |
1774 | return 0; | |
1775 | } | |
1776 | ||
c9839a11 | 1777 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1778 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1779 | ediv, u8 rand[8]) |
75d262c2 | 1780 | { |
c9839a11 | 1781 | struct smp_ltk *key, *old_key; |
75d262c2 | 1782 | |
c9839a11 VCG |
1783 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1784 | return 0; | |
75d262c2 | 1785 | |
c9839a11 VCG |
1786 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1787 | if (old_key) | |
75d262c2 | 1788 | key = old_key; |
c9839a11 VCG |
1789 | else { |
1790 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1791 | if (!key) |
1792 | return -ENOMEM; | |
c9839a11 | 1793 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1794 | } |
1795 | ||
75d262c2 | 1796 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1797 | key->bdaddr_type = addr_type; |
1798 | memcpy(key->val, tk, sizeof(key->val)); | |
1799 | key->authenticated = authenticated; | |
1800 | key->ediv = ediv; | |
1801 | key->enc_size = enc_size; | |
1802 | key->type = type; | |
1803 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1804 | |
c9839a11 VCG |
1805 | if (!new_key) |
1806 | return 0; | |
75d262c2 | 1807 | |
261cc5aa VCG |
1808 | if (type & HCI_SMP_LTK) |
1809 | mgmt_new_ltk(hdev, key, 1); | |
1810 | ||
75d262c2 VCG |
1811 | return 0; |
1812 | } | |
1813 | ||
55ed8ca1 JH |
1814 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1815 | { | |
1816 | struct link_key *key; | |
1817 | ||
1818 | key = hci_find_link_key(hdev, bdaddr); | |
1819 | if (!key) | |
1820 | return -ENOENT; | |
1821 | ||
6ed93dc6 | 1822 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
1823 | |
1824 | list_del(&key->list); | |
1825 | kfree(key); | |
1826 | ||
1827 | return 0; | |
1828 | } | |
1829 | ||
b899efaf VCG |
1830 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1831 | { | |
1832 | struct smp_ltk *k, *tmp; | |
1833 | ||
1834 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1835 | if (bacmp(bdaddr, &k->bdaddr)) | |
1836 | continue; | |
1837 | ||
6ed93dc6 | 1838 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
1839 | |
1840 | list_del(&k->list); | |
1841 | kfree(k); | |
1842 | } | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
6bd32326 | 1847 | /* HCI command timer function */ |
bda4f23a | 1848 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1849 | { |
1850 | struct hci_dev *hdev = (void *) arg; | |
1851 | ||
bda4f23a AE |
1852 | if (hdev->sent_cmd) { |
1853 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1854 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1855 | ||
1856 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1857 | } else { | |
1858 | BT_ERR("%s command tx timeout", hdev->name); | |
1859 | } | |
1860 | ||
6bd32326 | 1861 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1862 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1863 | } |
1864 | ||
2763eda6 | 1865 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1866 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1867 | { |
1868 | struct oob_data *data; | |
1869 | ||
1870 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1871 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1872 | return data; | |
1873 | ||
1874 | return NULL; | |
1875 | } | |
1876 | ||
1877 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1878 | { | |
1879 | struct oob_data *data; | |
1880 | ||
1881 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1882 | if (!data) | |
1883 | return -ENOENT; | |
1884 | ||
6ed93dc6 | 1885 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1886 | |
1887 | list_del(&data->list); | |
1888 | kfree(data); | |
1889 | ||
1890 | return 0; | |
1891 | } | |
1892 | ||
1893 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1894 | { | |
1895 | struct oob_data *data, *n; | |
1896 | ||
1897 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1898 | list_del(&data->list); | |
1899 | kfree(data); | |
1900 | } | |
1901 | ||
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1906 | u8 *randomizer) |
2763eda6 SJ |
1907 | { |
1908 | struct oob_data *data; | |
1909 | ||
1910 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1911 | ||
1912 | if (!data) { | |
1913 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1914 | if (!data) | |
1915 | return -ENOMEM; | |
1916 | ||
1917 | bacpy(&data->bdaddr, bdaddr); | |
1918 | list_add(&data->list, &hdev->remote_oob_data); | |
1919 | } | |
1920 | ||
1921 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1922 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1923 | ||
6ed93dc6 | 1924 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1925 | |
1926 | return 0; | |
1927 | } | |
1928 | ||
04124681 | 1929 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1930 | { |
8035ded4 | 1931 | struct bdaddr_list *b; |
b2a66aad | 1932 | |
8035ded4 | 1933 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1934 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1935 | return b; | |
b2a66aad AJ |
1936 | |
1937 | return NULL; | |
1938 | } | |
1939 | ||
1940 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1941 | { | |
1942 | struct list_head *p, *n; | |
1943 | ||
1944 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1945 | struct bdaddr_list *b; | |
1946 | ||
1947 | b = list_entry(p, struct bdaddr_list, list); | |
1948 | ||
1949 | list_del(p); | |
1950 | kfree(b); | |
1951 | } | |
1952 | ||
1953 | return 0; | |
1954 | } | |
1955 | ||
88c1fe4b | 1956 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1957 | { |
1958 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1959 | |
1960 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1961 | return -EBADF; | |
1962 | ||
5e762444 AJ |
1963 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1964 | return -EEXIST; | |
b2a66aad AJ |
1965 | |
1966 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1967 | if (!entry) |
1968 | return -ENOMEM; | |
b2a66aad AJ |
1969 | |
1970 | bacpy(&entry->bdaddr, bdaddr); | |
1971 | ||
1972 | list_add(&entry->list, &hdev->blacklist); | |
1973 | ||
88c1fe4b | 1974 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1975 | } |
1976 | ||
88c1fe4b | 1977 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1978 | { |
1979 | struct bdaddr_list *entry; | |
b2a66aad | 1980 | |
1ec918ce | 1981 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1982 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1983 | |
1984 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1985 | if (!entry) |
5e762444 | 1986 | return -ENOENT; |
b2a66aad AJ |
1987 | |
1988 | list_del(&entry->list); | |
1989 | kfree(entry); | |
1990 | ||
88c1fe4b | 1991 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1992 | } |
1993 | ||
42c6b129 | 1994 | static void le_scan_param_req(struct hci_request *req, unsigned long opt) |
7ba8b4be AG |
1995 | { |
1996 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1997 | struct hci_cp_le_set_scan_param cp; | |
1998 | ||
1999 | memset(&cp, 0, sizeof(cp)); | |
2000 | cp.type = param->type; | |
2001 | cp.interval = cpu_to_le16(param->interval); | |
2002 | cp.window = cpu_to_le16(param->window); | |
2003 | ||
42c6b129 | 2004 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); |
7ba8b4be AG |
2005 | } |
2006 | ||
42c6b129 | 2007 | static void le_scan_enable_req(struct hci_request *req, unsigned long opt) |
7ba8b4be AG |
2008 | { |
2009 | struct hci_cp_le_set_scan_enable cp; | |
2010 | ||
2011 | memset(&cp, 0, sizeof(cp)); | |
76a388be | 2012 | cp.enable = LE_SCAN_ENABLE; |
525e296a | 2013 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; |
7ba8b4be | 2014 | |
42c6b129 | 2015 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
7ba8b4be AG |
2016 | } |
2017 | ||
2018 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 2019 | u16 window, int timeout) |
7ba8b4be AG |
2020 | { |
2021 | long timeo = msecs_to_jiffies(3000); | |
2022 | struct le_scan_params param; | |
2023 | int err; | |
2024 | ||
2025 | BT_DBG("%s", hdev->name); | |
2026 | ||
2027 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
2028 | return -EINPROGRESS; | |
2029 | ||
2030 | param.type = type; | |
2031 | param.interval = interval; | |
2032 | param.window = window; | |
2033 | ||
2034 | hci_req_lock(hdev); | |
2035 | ||
01178cd4 JH |
2036 | err = __hci_req_sync(hdev, le_scan_param_req, (unsigned long) ¶m, |
2037 | timeo); | |
7ba8b4be | 2038 | if (!err) |
01178cd4 | 2039 | err = __hci_req_sync(hdev, le_scan_enable_req, 0, timeo); |
7ba8b4be AG |
2040 | |
2041 | hci_req_unlock(hdev); | |
2042 | ||
2043 | if (err < 0) | |
2044 | return err; | |
2045 | ||
46818ed5 | 2046 | queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable, |
b6c7515a | 2047 | timeout); |
7ba8b4be AG |
2048 | |
2049 | return 0; | |
2050 | } | |
2051 | ||
7dbfac1d AG |
2052 | int hci_cancel_le_scan(struct hci_dev *hdev) |
2053 | { | |
2054 | BT_DBG("%s", hdev->name); | |
2055 | ||
2056 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
2057 | return -EALREADY; | |
2058 | ||
2059 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
2060 | struct hci_cp_le_set_scan_enable cp; | |
2061 | ||
2062 | /* Send HCI command to disable LE Scan */ | |
2063 | memset(&cp, 0, sizeof(cp)); | |
2064 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2065 | } | |
2066 | ||
2067 | return 0; | |
2068 | } | |
2069 | ||
7ba8b4be AG |
2070 | static void le_scan_disable_work(struct work_struct *work) |
2071 | { | |
2072 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2073 | le_scan_disable.work); |
7ba8b4be AG |
2074 | struct hci_cp_le_set_scan_enable cp; |
2075 | ||
2076 | BT_DBG("%s", hdev->name); | |
2077 | ||
2078 | memset(&cp, 0, sizeof(cp)); | |
2079 | ||
2080 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2081 | } | |
2082 | ||
28b75a89 AG |
2083 | static void le_scan_work(struct work_struct *work) |
2084 | { | |
2085 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
2086 | struct le_scan_params *param = &hdev->le_scan_params; | |
2087 | ||
2088 | BT_DBG("%s", hdev->name); | |
2089 | ||
04124681 GP |
2090 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
2091 | param->timeout); | |
28b75a89 AG |
2092 | } |
2093 | ||
2094 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 2095 | int timeout) |
28b75a89 AG |
2096 | { |
2097 | struct le_scan_params *param = &hdev->le_scan_params; | |
2098 | ||
2099 | BT_DBG("%s", hdev->name); | |
2100 | ||
f1550478 JH |
2101 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) |
2102 | return -ENOTSUPP; | |
2103 | ||
28b75a89 AG |
2104 | if (work_busy(&hdev->le_scan)) |
2105 | return -EINPROGRESS; | |
2106 | ||
2107 | param->type = type; | |
2108 | param->interval = interval; | |
2109 | param->window = window; | |
2110 | param->timeout = timeout; | |
2111 | ||
2112 | queue_work(system_long_wq, &hdev->le_scan); | |
2113 | ||
2114 | return 0; | |
2115 | } | |
2116 | ||
9be0dab7 DH |
2117 | /* Alloc HCI device */ |
2118 | struct hci_dev *hci_alloc_dev(void) | |
2119 | { | |
2120 | struct hci_dev *hdev; | |
2121 | ||
2122 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2123 | if (!hdev) | |
2124 | return NULL; | |
2125 | ||
b1b813d4 DH |
2126 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2127 | hdev->esco_type = (ESCO_HV1); | |
2128 | hdev->link_mode = (HCI_LM_ACCEPT); | |
2129 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2130 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2131 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2132 | |
b1b813d4 DH |
2133 | hdev->sniff_max_interval = 800; |
2134 | hdev->sniff_min_interval = 80; | |
2135 | ||
2136 | mutex_init(&hdev->lock); | |
2137 | mutex_init(&hdev->req_lock); | |
2138 | ||
2139 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2140 | INIT_LIST_HEAD(&hdev->blacklist); | |
2141 | INIT_LIST_HEAD(&hdev->uuids); | |
2142 | INIT_LIST_HEAD(&hdev->link_keys); | |
2143 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2144 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2145 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2146 | |
2147 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2148 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2149 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2150 | INIT_WORK(&hdev->power_on, hci_power_on); | |
2151 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
2152 | ||
b1b813d4 DH |
2153 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2154 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2155 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2156 | ||
b1b813d4 DH |
2157 | skb_queue_head_init(&hdev->rx_q); |
2158 | skb_queue_head_init(&hdev->cmd_q); | |
2159 | skb_queue_head_init(&hdev->raw_q); | |
2160 | ||
2161 | init_waitqueue_head(&hdev->req_wait_q); | |
2162 | ||
bda4f23a | 2163 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2164 | |
b1b813d4 DH |
2165 | hci_init_sysfs(hdev); |
2166 | discovery_init(hdev); | |
9be0dab7 DH |
2167 | |
2168 | return hdev; | |
2169 | } | |
2170 | EXPORT_SYMBOL(hci_alloc_dev); | |
2171 | ||
2172 | /* Free HCI device */ | |
2173 | void hci_free_dev(struct hci_dev *hdev) | |
2174 | { | |
9be0dab7 DH |
2175 | /* will free via device release */ |
2176 | put_device(&hdev->dev); | |
2177 | } | |
2178 | EXPORT_SYMBOL(hci_free_dev); | |
2179 | ||
1da177e4 LT |
2180 | /* Register HCI device */ |
2181 | int hci_register_dev(struct hci_dev *hdev) | |
2182 | { | |
b1b813d4 | 2183 | int id, error; |
1da177e4 | 2184 | |
010666a1 | 2185 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2186 | return -EINVAL; |
2187 | ||
08add513 MM |
2188 | /* Do not allow HCI_AMP devices to register at index 0, |
2189 | * so the index can be used as the AMP controller ID. | |
2190 | */ | |
3df92b31 SL |
2191 | switch (hdev->dev_type) { |
2192 | case HCI_BREDR: | |
2193 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2194 | break; | |
2195 | case HCI_AMP: | |
2196 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2197 | break; | |
2198 | default: | |
2199 | return -EINVAL; | |
1da177e4 | 2200 | } |
8e87d142 | 2201 | |
3df92b31 SL |
2202 | if (id < 0) |
2203 | return id; | |
2204 | ||
1da177e4 LT |
2205 | sprintf(hdev->name, "hci%d", id); |
2206 | hdev->id = id; | |
2d8b3a11 AE |
2207 | |
2208 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2209 | ||
3df92b31 SL |
2210 | write_lock(&hci_dev_list_lock); |
2211 | list_add(&hdev->list, &hci_dev_list); | |
f20d09d5 | 2212 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 2213 | |
32845eb1 | 2214 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 2215 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
2216 | if (!hdev->workqueue) { |
2217 | error = -ENOMEM; | |
2218 | goto err; | |
2219 | } | |
f48fd9c8 | 2220 | |
6ead1bbc JH |
2221 | hdev->req_workqueue = alloc_workqueue(hdev->name, |
2222 | WQ_HIGHPRI | WQ_UNBOUND | | |
2223 | WQ_MEM_RECLAIM, 1); | |
2224 | if (!hdev->req_workqueue) { | |
2225 | destroy_workqueue(hdev->workqueue); | |
2226 | error = -ENOMEM; | |
2227 | goto err; | |
2228 | } | |
2229 | ||
33ca954d DH |
2230 | error = hci_add_sysfs(hdev); |
2231 | if (error < 0) | |
2232 | goto err_wqueue; | |
1da177e4 | 2233 | |
611b30f7 | 2234 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2235 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2236 | hdev); | |
611b30f7 MH |
2237 | if (hdev->rfkill) { |
2238 | if (rfkill_register(hdev->rfkill) < 0) { | |
2239 | rfkill_destroy(hdev->rfkill); | |
2240 | hdev->rfkill = NULL; | |
2241 | } | |
2242 | } | |
2243 | ||
a8b2d5c2 | 2244 | set_bit(HCI_SETUP, &hdev->dev_flags); |
ce2be9ac AE |
2245 | |
2246 | if (hdev->dev_type != HCI_AMP) | |
2247 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); | |
2248 | ||
1da177e4 | 2249 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2250 | hci_dev_hold(hdev); |
1da177e4 | 2251 | |
19202573 | 2252 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2253 | |
1da177e4 | 2254 | return id; |
f48fd9c8 | 2255 | |
33ca954d DH |
2256 | err_wqueue: |
2257 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2258 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2259 | err: |
3df92b31 | 2260 | ida_simple_remove(&hci_index_ida, hdev->id); |
f20d09d5 | 2261 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 2262 | list_del(&hdev->list); |
f20d09d5 | 2263 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 2264 | |
33ca954d | 2265 | return error; |
1da177e4 LT |
2266 | } |
2267 | EXPORT_SYMBOL(hci_register_dev); | |
2268 | ||
2269 | /* Unregister HCI device */ | |
59735631 | 2270 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2271 | { |
3df92b31 | 2272 | int i, id; |
ef222013 | 2273 | |
c13854ce | 2274 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2275 | |
94324962 JH |
2276 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2277 | ||
3df92b31 SL |
2278 | id = hdev->id; |
2279 | ||
f20d09d5 | 2280 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2281 | list_del(&hdev->list); |
f20d09d5 | 2282 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2283 | |
2284 | hci_dev_do_close(hdev); | |
2285 | ||
cd4c5391 | 2286 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2287 | kfree_skb(hdev->reassembly[i]); |
2288 | ||
b9b5ef18 GP |
2289 | cancel_work_sync(&hdev->power_on); |
2290 | ||
ab81cbf9 | 2291 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2292 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2293 | hci_dev_lock(hdev); |
744cf19e | 2294 | mgmt_index_removed(hdev); |
09fd0de5 | 2295 | hci_dev_unlock(hdev); |
56e5cb86 | 2296 | } |
ab81cbf9 | 2297 | |
2e58ef3e JH |
2298 | /* mgmt_index_removed should take care of emptying the |
2299 | * pending list */ | |
2300 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2301 | ||
1da177e4 LT |
2302 | hci_notify(hdev, HCI_DEV_UNREG); |
2303 | ||
611b30f7 MH |
2304 | if (hdev->rfkill) { |
2305 | rfkill_unregister(hdev->rfkill); | |
2306 | rfkill_destroy(hdev->rfkill); | |
2307 | } | |
2308 | ||
ce242970 | 2309 | hci_del_sysfs(hdev); |
147e2d59 | 2310 | |
f48fd9c8 | 2311 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2312 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2313 | |
09fd0de5 | 2314 | hci_dev_lock(hdev); |
e2e0cacb | 2315 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2316 | hci_uuids_clear(hdev); |
55ed8ca1 | 2317 | hci_link_keys_clear(hdev); |
b899efaf | 2318 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2319 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2320 | hci_dev_unlock(hdev); |
e2e0cacb | 2321 | |
dc946bd8 | 2322 | hci_dev_put(hdev); |
3df92b31 SL |
2323 | |
2324 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2325 | } |
2326 | EXPORT_SYMBOL(hci_unregister_dev); | |
2327 | ||
2328 | /* Suspend HCI device */ | |
2329 | int hci_suspend_dev(struct hci_dev *hdev) | |
2330 | { | |
2331 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2332 | return 0; | |
2333 | } | |
2334 | EXPORT_SYMBOL(hci_suspend_dev); | |
2335 | ||
2336 | /* Resume HCI device */ | |
2337 | int hci_resume_dev(struct hci_dev *hdev) | |
2338 | { | |
2339 | hci_notify(hdev, HCI_DEV_RESUME); | |
2340 | return 0; | |
2341 | } | |
2342 | EXPORT_SYMBOL(hci_resume_dev); | |
2343 | ||
76bca880 MH |
2344 | /* Receive frame from HCI drivers */ |
2345 | int hci_recv_frame(struct sk_buff *skb) | |
2346 | { | |
2347 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2348 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 2349 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2350 | kfree_skb(skb); |
2351 | return -ENXIO; | |
2352 | } | |
2353 | ||
d82603c6 | 2354 | /* Incoming skb */ |
76bca880 MH |
2355 | bt_cb(skb)->incoming = 1; |
2356 | ||
2357 | /* Time stamp */ | |
2358 | __net_timestamp(skb); | |
2359 | ||
76bca880 | 2360 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2361 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2362 | |
76bca880 MH |
2363 | return 0; |
2364 | } | |
2365 | EXPORT_SYMBOL(hci_recv_frame); | |
2366 | ||
33e882a5 | 2367 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2368 | int count, __u8 index) |
33e882a5 SS |
2369 | { |
2370 | int len = 0; | |
2371 | int hlen = 0; | |
2372 | int remain = count; | |
2373 | struct sk_buff *skb; | |
2374 | struct bt_skb_cb *scb; | |
2375 | ||
2376 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2377 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2378 | return -EILSEQ; |
2379 | ||
2380 | skb = hdev->reassembly[index]; | |
2381 | ||
2382 | if (!skb) { | |
2383 | switch (type) { | |
2384 | case HCI_ACLDATA_PKT: | |
2385 | len = HCI_MAX_FRAME_SIZE; | |
2386 | hlen = HCI_ACL_HDR_SIZE; | |
2387 | break; | |
2388 | case HCI_EVENT_PKT: | |
2389 | len = HCI_MAX_EVENT_SIZE; | |
2390 | hlen = HCI_EVENT_HDR_SIZE; | |
2391 | break; | |
2392 | case HCI_SCODATA_PKT: | |
2393 | len = HCI_MAX_SCO_SIZE; | |
2394 | hlen = HCI_SCO_HDR_SIZE; | |
2395 | break; | |
2396 | } | |
2397 | ||
1e429f38 | 2398 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2399 | if (!skb) |
2400 | return -ENOMEM; | |
2401 | ||
2402 | scb = (void *) skb->cb; | |
2403 | scb->expect = hlen; | |
2404 | scb->pkt_type = type; | |
2405 | ||
2406 | skb->dev = (void *) hdev; | |
2407 | hdev->reassembly[index] = skb; | |
2408 | } | |
2409 | ||
2410 | while (count) { | |
2411 | scb = (void *) skb->cb; | |
89bb46d0 | 2412 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2413 | |
2414 | memcpy(skb_put(skb, len), data, len); | |
2415 | ||
2416 | count -= len; | |
2417 | data += len; | |
2418 | scb->expect -= len; | |
2419 | remain = count; | |
2420 | ||
2421 | switch (type) { | |
2422 | case HCI_EVENT_PKT: | |
2423 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2424 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2425 | scb->expect = h->plen; | |
2426 | ||
2427 | if (skb_tailroom(skb) < scb->expect) { | |
2428 | kfree_skb(skb); | |
2429 | hdev->reassembly[index] = NULL; | |
2430 | return -ENOMEM; | |
2431 | } | |
2432 | } | |
2433 | break; | |
2434 | ||
2435 | case HCI_ACLDATA_PKT: | |
2436 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2437 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2438 | scb->expect = __le16_to_cpu(h->dlen); | |
2439 | ||
2440 | if (skb_tailroom(skb) < scb->expect) { | |
2441 | kfree_skb(skb); | |
2442 | hdev->reassembly[index] = NULL; | |
2443 | return -ENOMEM; | |
2444 | } | |
2445 | } | |
2446 | break; | |
2447 | ||
2448 | case HCI_SCODATA_PKT: | |
2449 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2450 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2451 | scb->expect = h->dlen; | |
2452 | ||
2453 | if (skb_tailroom(skb) < scb->expect) { | |
2454 | kfree_skb(skb); | |
2455 | hdev->reassembly[index] = NULL; | |
2456 | return -ENOMEM; | |
2457 | } | |
2458 | } | |
2459 | break; | |
2460 | } | |
2461 | ||
2462 | if (scb->expect == 0) { | |
2463 | /* Complete frame */ | |
2464 | ||
2465 | bt_cb(skb)->pkt_type = type; | |
2466 | hci_recv_frame(skb); | |
2467 | ||
2468 | hdev->reassembly[index] = NULL; | |
2469 | return remain; | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | return remain; | |
2474 | } | |
2475 | ||
ef222013 MH |
2476 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2477 | { | |
f39a3c06 SS |
2478 | int rem = 0; |
2479 | ||
ef222013 MH |
2480 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2481 | return -EILSEQ; | |
2482 | ||
da5f6c37 | 2483 | while (count) { |
1e429f38 | 2484 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2485 | if (rem < 0) |
2486 | return rem; | |
ef222013 | 2487 | |
f39a3c06 SS |
2488 | data += (count - rem); |
2489 | count = rem; | |
f81c6224 | 2490 | } |
ef222013 | 2491 | |
f39a3c06 | 2492 | return rem; |
ef222013 MH |
2493 | } |
2494 | EXPORT_SYMBOL(hci_recv_fragment); | |
2495 | ||
99811510 SS |
2496 | #define STREAM_REASSEMBLY 0 |
2497 | ||
2498 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2499 | { | |
2500 | int type; | |
2501 | int rem = 0; | |
2502 | ||
da5f6c37 | 2503 | while (count) { |
99811510 SS |
2504 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2505 | ||
2506 | if (!skb) { | |
2507 | struct { char type; } *pkt; | |
2508 | ||
2509 | /* Start of the frame */ | |
2510 | pkt = data; | |
2511 | type = pkt->type; | |
2512 | ||
2513 | data++; | |
2514 | count--; | |
2515 | } else | |
2516 | type = bt_cb(skb)->pkt_type; | |
2517 | ||
1e429f38 | 2518 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2519 | STREAM_REASSEMBLY); |
99811510 SS |
2520 | if (rem < 0) |
2521 | return rem; | |
2522 | ||
2523 | data += (count - rem); | |
2524 | count = rem; | |
f81c6224 | 2525 | } |
99811510 SS |
2526 | |
2527 | return rem; | |
2528 | } | |
2529 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2530 | ||
1da177e4 LT |
2531 | /* ---- Interface to upper protocols ---- */ |
2532 | ||
1da177e4 LT |
2533 | int hci_register_cb(struct hci_cb *cb) |
2534 | { | |
2535 | BT_DBG("%p name %s", cb, cb->name); | |
2536 | ||
f20d09d5 | 2537 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2538 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2539 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2540 | |
2541 | return 0; | |
2542 | } | |
2543 | EXPORT_SYMBOL(hci_register_cb); | |
2544 | ||
2545 | int hci_unregister_cb(struct hci_cb *cb) | |
2546 | { | |
2547 | BT_DBG("%p name %s", cb, cb->name); | |
2548 | ||
f20d09d5 | 2549 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2550 | list_del(&cb->list); |
f20d09d5 | 2551 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2552 | |
2553 | return 0; | |
2554 | } | |
2555 | EXPORT_SYMBOL(hci_unregister_cb); | |
2556 | ||
2557 | static int hci_send_frame(struct sk_buff *skb) | |
2558 | { | |
2559 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2560 | ||
2561 | if (!hdev) { | |
2562 | kfree_skb(skb); | |
2563 | return -ENODEV; | |
2564 | } | |
2565 | ||
0d48d939 | 2566 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2567 | |
cd82e61c MH |
2568 | /* Time stamp */ |
2569 | __net_timestamp(skb); | |
1da177e4 | 2570 | |
cd82e61c MH |
2571 | /* Send copy to monitor */ |
2572 | hci_send_to_monitor(hdev, skb); | |
2573 | ||
2574 | if (atomic_read(&hdev->promisc)) { | |
2575 | /* Send copy to the sockets */ | |
470fe1b5 | 2576 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2577 | } |
2578 | ||
2579 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2580 | skb_orphan(skb); | |
2581 | ||
2582 | return hdev->send(skb); | |
2583 | } | |
2584 | ||
3119ae95 JH |
2585 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2586 | { | |
2587 | skb_queue_head_init(&req->cmd_q); | |
2588 | req->hdev = hdev; | |
5d73e034 | 2589 | req->err = 0; |
3119ae95 JH |
2590 | } |
2591 | ||
2592 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2593 | { | |
2594 | struct hci_dev *hdev = req->hdev; | |
2595 | struct sk_buff *skb; | |
2596 | unsigned long flags; | |
2597 | ||
2598 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2599 | ||
5d73e034 AG |
2600 | /* If an error occured during request building, remove all HCI |
2601 | * commands queued on the HCI request queue. | |
2602 | */ | |
2603 | if (req->err) { | |
2604 | skb_queue_purge(&req->cmd_q); | |
2605 | return req->err; | |
2606 | } | |
2607 | ||
3119ae95 JH |
2608 | /* Do not allow empty requests */ |
2609 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2610 | return -ENODATA; |
3119ae95 JH |
2611 | |
2612 | skb = skb_peek_tail(&req->cmd_q); | |
2613 | bt_cb(skb)->req.complete = complete; | |
2614 | ||
2615 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2616 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2617 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2618 | ||
2619 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2620 | ||
2621 | return 0; | |
2622 | } | |
2623 | ||
1ca3a9d0 | 2624 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 2625 | u32 plen, const void *param) |
1da177e4 LT |
2626 | { |
2627 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2628 | struct hci_command_hdr *hdr; | |
2629 | struct sk_buff *skb; | |
2630 | ||
1da177e4 | 2631 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2632 | if (!skb) |
2633 | return NULL; | |
1da177e4 LT |
2634 | |
2635 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2636 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2637 | hdr->plen = plen; |
2638 | ||
2639 | if (plen) | |
2640 | memcpy(skb_put(skb, plen), param, plen); | |
2641 | ||
2642 | BT_DBG("skb len %d", skb->len); | |
2643 | ||
0d48d939 | 2644 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2645 | skb->dev = (void *) hdev; |
c78ae283 | 2646 | |
1ca3a9d0 JH |
2647 | return skb; |
2648 | } | |
2649 | ||
2650 | /* Send HCI command */ | |
07dc93dd JH |
2651 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2652 | const void *param) | |
1ca3a9d0 JH |
2653 | { |
2654 | struct sk_buff *skb; | |
2655 | ||
2656 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2657 | ||
2658 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2659 | if (!skb) { | |
2660 | BT_ERR("%s no memory for command", hdev->name); | |
2661 | return -ENOMEM; | |
2662 | } | |
2663 | ||
11714b3d JH |
2664 | /* Stand-alone HCI commands must be flaged as |
2665 | * single-command requests. | |
2666 | */ | |
2667 | bt_cb(skb)->req.start = true; | |
2668 | ||
1da177e4 | 2669 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2670 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2671 | |
2672 | return 0; | |
2673 | } | |
1da177e4 | 2674 | |
71c76a17 | 2675 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
2676 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
2677 | const void *param, u8 event) | |
71c76a17 JH |
2678 | { |
2679 | struct hci_dev *hdev = req->hdev; | |
2680 | struct sk_buff *skb; | |
2681 | ||
2682 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2683 | ||
34739c1e AG |
2684 | /* If an error occured during request building, there is no point in |
2685 | * queueing the HCI command. We can simply return. | |
2686 | */ | |
2687 | if (req->err) | |
2688 | return; | |
2689 | ||
71c76a17 JH |
2690 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2691 | if (!skb) { | |
5d73e034 AG |
2692 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2693 | hdev->name, opcode); | |
2694 | req->err = -ENOMEM; | |
e348fe6b | 2695 | return; |
71c76a17 JH |
2696 | } |
2697 | ||
2698 | if (skb_queue_empty(&req->cmd_q)) | |
2699 | bt_cb(skb)->req.start = true; | |
2700 | ||
02350a72 JH |
2701 | bt_cb(skb)->req.event = event; |
2702 | ||
71c76a17 | 2703 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2704 | } |
2705 | ||
07dc93dd JH |
2706 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
2707 | const void *param) | |
02350a72 JH |
2708 | { |
2709 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2710 | } | |
2711 | ||
1da177e4 | 2712 | /* Get data from the previously sent command */ |
a9de9248 | 2713 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2714 | { |
2715 | struct hci_command_hdr *hdr; | |
2716 | ||
2717 | if (!hdev->sent_cmd) | |
2718 | return NULL; | |
2719 | ||
2720 | hdr = (void *) hdev->sent_cmd->data; | |
2721 | ||
a9de9248 | 2722 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2723 | return NULL; |
2724 | ||
f0e09510 | 2725 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2726 | |
2727 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2728 | } | |
2729 | ||
2730 | /* Send ACL data */ | |
2731 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2732 | { | |
2733 | struct hci_acl_hdr *hdr; | |
2734 | int len = skb->len; | |
2735 | ||
badff6d0 ACM |
2736 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2737 | skb_reset_transport_header(skb); | |
9c70220b | 2738 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2739 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2740 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2741 | } |
2742 | ||
ee22be7e | 2743 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2744 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2745 | { |
ee22be7e | 2746 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2747 | struct hci_dev *hdev = conn->hdev; |
2748 | struct sk_buff *list; | |
2749 | ||
087bfd99 GP |
2750 | skb->len = skb_headlen(skb); |
2751 | skb->data_len = 0; | |
2752 | ||
2753 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2754 | |
2755 | switch (hdev->dev_type) { | |
2756 | case HCI_BREDR: | |
2757 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2758 | break; | |
2759 | case HCI_AMP: | |
2760 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2761 | break; | |
2762 | default: | |
2763 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2764 | return; | |
2765 | } | |
087bfd99 | 2766 | |
70f23020 AE |
2767 | list = skb_shinfo(skb)->frag_list; |
2768 | if (!list) { | |
1da177e4 LT |
2769 | /* Non fragmented */ |
2770 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2771 | ||
73d80deb | 2772 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2773 | } else { |
2774 | /* Fragmented */ | |
2775 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2776 | ||
2777 | skb_shinfo(skb)->frag_list = NULL; | |
2778 | ||
2779 | /* Queue all fragments atomically */ | |
af3e6359 | 2780 | spin_lock(&queue->lock); |
1da177e4 | 2781 | |
73d80deb | 2782 | __skb_queue_tail(queue, skb); |
e702112f AE |
2783 | |
2784 | flags &= ~ACL_START; | |
2785 | flags |= ACL_CONT; | |
1da177e4 LT |
2786 | do { |
2787 | skb = list; list = list->next; | |
8e87d142 | 2788 | |
1da177e4 | 2789 | skb->dev = (void *) hdev; |
0d48d939 | 2790 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2791 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2792 | |
2793 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2794 | ||
73d80deb | 2795 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2796 | } while (list); |
2797 | ||
af3e6359 | 2798 | spin_unlock(&queue->lock); |
1da177e4 | 2799 | } |
73d80deb LAD |
2800 | } |
2801 | ||
2802 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2803 | { | |
ee22be7e | 2804 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2805 | |
f0e09510 | 2806 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb LAD |
2807 | |
2808 | skb->dev = (void *) hdev; | |
73d80deb | 2809 | |
ee22be7e | 2810 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2811 | |
3eff45ea | 2812 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2813 | } |
1da177e4 LT |
2814 | |
2815 | /* Send SCO data */ | |
0d861d8b | 2816 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2817 | { |
2818 | struct hci_dev *hdev = conn->hdev; | |
2819 | struct hci_sco_hdr hdr; | |
2820 | ||
2821 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2822 | ||
aca3192c | 2823 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2824 | hdr.dlen = skb->len; |
2825 | ||
badff6d0 ACM |
2826 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2827 | skb_reset_transport_header(skb); | |
9c70220b | 2828 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2829 | |
2830 | skb->dev = (void *) hdev; | |
0d48d939 | 2831 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2832 | |
1da177e4 | 2833 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2834 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2835 | } |
1da177e4 LT |
2836 | |
2837 | /* ---- HCI TX task (outgoing data) ---- */ | |
2838 | ||
2839 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2840 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2841 | int *quote) | |
1da177e4 LT |
2842 | { |
2843 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2844 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2845 | unsigned int num = 0, min = ~0; |
1da177e4 | 2846 | |
8e87d142 | 2847 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2848 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2849 | |
2850 | rcu_read_lock(); | |
2851 | ||
2852 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2853 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2854 | continue; |
769be974 MH |
2855 | |
2856 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2857 | continue; | |
2858 | ||
1da177e4 LT |
2859 | num++; |
2860 | ||
2861 | if (c->sent < min) { | |
2862 | min = c->sent; | |
2863 | conn = c; | |
2864 | } | |
52087a79 LAD |
2865 | |
2866 | if (hci_conn_num(hdev, type) == num) | |
2867 | break; | |
1da177e4 LT |
2868 | } |
2869 | ||
bf4c6325 GP |
2870 | rcu_read_unlock(); |
2871 | ||
1da177e4 | 2872 | if (conn) { |
6ed58ec5 VT |
2873 | int cnt, q; |
2874 | ||
2875 | switch (conn->type) { | |
2876 | case ACL_LINK: | |
2877 | cnt = hdev->acl_cnt; | |
2878 | break; | |
2879 | case SCO_LINK: | |
2880 | case ESCO_LINK: | |
2881 | cnt = hdev->sco_cnt; | |
2882 | break; | |
2883 | case LE_LINK: | |
2884 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2885 | break; | |
2886 | default: | |
2887 | cnt = 0; | |
2888 | BT_ERR("Unknown link type"); | |
2889 | } | |
2890 | ||
2891 | q = cnt / num; | |
1da177e4 LT |
2892 | *quote = q ? q : 1; |
2893 | } else | |
2894 | *quote = 0; | |
2895 | ||
2896 | BT_DBG("conn %p quote %d", conn, *quote); | |
2897 | return conn; | |
2898 | } | |
2899 | ||
6039aa73 | 2900 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2901 | { |
2902 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2903 | struct hci_conn *c; |
1da177e4 | 2904 | |
bae1f5d9 | 2905 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2906 | |
bf4c6325 GP |
2907 | rcu_read_lock(); |
2908 | ||
1da177e4 | 2909 | /* Kill stalled connections */ |
bf4c6325 | 2910 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 2911 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
2912 | BT_ERR("%s killing stalled connection %pMR", |
2913 | hdev->name, &c->dst); | |
bed71748 | 2914 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2915 | } |
2916 | } | |
bf4c6325 GP |
2917 | |
2918 | rcu_read_unlock(); | |
1da177e4 LT |
2919 | } |
2920 | ||
6039aa73 GP |
2921 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2922 | int *quote) | |
1da177e4 | 2923 | { |
73d80deb LAD |
2924 | struct hci_conn_hash *h = &hdev->conn_hash; |
2925 | struct hci_chan *chan = NULL; | |
abc5de8f | 2926 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2927 | struct hci_conn *conn; |
73d80deb LAD |
2928 | int cnt, q, conn_num = 0; |
2929 | ||
2930 | BT_DBG("%s", hdev->name); | |
2931 | ||
bf4c6325 GP |
2932 | rcu_read_lock(); |
2933 | ||
2934 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2935 | struct hci_chan *tmp; |
2936 | ||
2937 | if (conn->type != type) | |
2938 | continue; | |
2939 | ||
2940 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2941 | continue; | |
2942 | ||
2943 | conn_num++; | |
2944 | ||
8192edef | 2945 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2946 | struct sk_buff *skb; |
2947 | ||
2948 | if (skb_queue_empty(&tmp->data_q)) | |
2949 | continue; | |
2950 | ||
2951 | skb = skb_peek(&tmp->data_q); | |
2952 | if (skb->priority < cur_prio) | |
2953 | continue; | |
2954 | ||
2955 | if (skb->priority > cur_prio) { | |
2956 | num = 0; | |
2957 | min = ~0; | |
2958 | cur_prio = skb->priority; | |
2959 | } | |
2960 | ||
2961 | num++; | |
2962 | ||
2963 | if (conn->sent < min) { | |
2964 | min = conn->sent; | |
2965 | chan = tmp; | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | if (hci_conn_num(hdev, type) == conn_num) | |
2970 | break; | |
2971 | } | |
2972 | ||
bf4c6325 GP |
2973 | rcu_read_unlock(); |
2974 | ||
73d80deb LAD |
2975 | if (!chan) |
2976 | return NULL; | |
2977 | ||
2978 | switch (chan->conn->type) { | |
2979 | case ACL_LINK: | |
2980 | cnt = hdev->acl_cnt; | |
2981 | break; | |
bd1eb66b AE |
2982 | case AMP_LINK: |
2983 | cnt = hdev->block_cnt; | |
2984 | break; | |
73d80deb LAD |
2985 | case SCO_LINK: |
2986 | case ESCO_LINK: | |
2987 | cnt = hdev->sco_cnt; | |
2988 | break; | |
2989 | case LE_LINK: | |
2990 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2991 | break; | |
2992 | default: | |
2993 | cnt = 0; | |
2994 | BT_ERR("Unknown link type"); | |
2995 | } | |
2996 | ||
2997 | q = cnt / num; | |
2998 | *quote = q ? q : 1; | |
2999 | BT_DBG("chan %p quote %d", chan, *quote); | |
3000 | return chan; | |
3001 | } | |
3002 | ||
02b20f0b LAD |
3003 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3004 | { | |
3005 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3006 | struct hci_conn *conn; | |
3007 | int num = 0; | |
3008 | ||
3009 | BT_DBG("%s", hdev->name); | |
3010 | ||
bf4c6325 GP |
3011 | rcu_read_lock(); |
3012 | ||
3013 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3014 | struct hci_chan *chan; |
3015 | ||
3016 | if (conn->type != type) | |
3017 | continue; | |
3018 | ||
3019 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3020 | continue; | |
3021 | ||
3022 | num++; | |
3023 | ||
8192edef | 3024 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3025 | struct sk_buff *skb; |
3026 | ||
3027 | if (chan->sent) { | |
3028 | chan->sent = 0; | |
3029 | continue; | |
3030 | } | |
3031 | ||
3032 | if (skb_queue_empty(&chan->data_q)) | |
3033 | continue; | |
3034 | ||
3035 | skb = skb_peek(&chan->data_q); | |
3036 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3037 | continue; | |
3038 | ||
3039 | skb->priority = HCI_PRIO_MAX - 1; | |
3040 | ||
3041 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3042 | skb->priority); |
02b20f0b LAD |
3043 | } |
3044 | ||
3045 | if (hci_conn_num(hdev, type) == num) | |
3046 | break; | |
3047 | } | |
bf4c6325 GP |
3048 | |
3049 | rcu_read_unlock(); | |
3050 | ||
02b20f0b LAD |
3051 | } |
3052 | ||
b71d385a AE |
3053 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3054 | { | |
3055 | /* Calculate count of blocks used by this packet */ | |
3056 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3057 | } | |
3058 | ||
6039aa73 | 3059 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3060 | { |
1da177e4 LT |
3061 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3062 | /* ACL tx timeout must be longer than maximum | |
3063 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3064 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3065 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3066 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3067 | } |
63d2bc1b | 3068 | } |
1da177e4 | 3069 | |
6039aa73 | 3070 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3071 | { |
3072 | unsigned int cnt = hdev->acl_cnt; | |
3073 | struct hci_chan *chan; | |
3074 | struct sk_buff *skb; | |
3075 | int quote; | |
3076 | ||
3077 | __check_timeout(hdev, cnt); | |
04837f64 | 3078 | |
73d80deb | 3079 | while (hdev->acl_cnt && |
a8c5fb1a | 3080 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3081 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3082 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3083 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3084 | skb->len, skb->priority); |
73d80deb | 3085 | |
ec1cce24 LAD |
3086 | /* Stop if priority has changed */ |
3087 | if (skb->priority < priority) | |
3088 | break; | |
3089 | ||
3090 | skb = skb_dequeue(&chan->data_q); | |
3091 | ||
73d80deb | 3092 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3093 | bt_cb(skb)->force_active); |
04837f64 | 3094 | |
1da177e4 LT |
3095 | hci_send_frame(skb); |
3096 | hdev->acl_last_tx = jiffies; | |
3097 | ||
3098 | hdev->acl_cnt--; | |
73d80deb LAD |
3099 | chan->sent++; |
3100 | chan->conn->sent++; | |
1da177e4 LT |
3101 | } |
3102 | } | |
02b20f0b LAD |
3103 | |
3104 | if (cnt != hdev->acl_cnt) | |
3105 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3106 | } |
3107 | ||
6039aa73 | 3108 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3109 | { |
63d2bc1b | 3110 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3111 | struct hci_chan *chan; |
3112 | struct sk_buff *skb; | |
3113 | int quote; | |
bd1eb66b | 3114 | u8 type; |
b71d385a | 3115 | |
63d2bc1b | 3116 | __check_timeout(hdev, cnt); |
b71d385a | 3117 | |
bd1eb66b AE |
3118 | BT_DBG("%s", hdev->name); |
3119 | ||
3120 | if (hdev->dev_type == HCI_AMP) | |
3121 | type = AMP_LINK; | |
3122 | else | |
3123 | type = ACL_LINK; | |
3124 | ||
b71d385a | 3125 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3126 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3127 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3128 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3129 | int blocks; | |
3130 | ||
3131 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3132 | skb->len, skb->priority); |
b71d385a AE |
3133 | |
3134 | /* Stop if priority has changed */ | |
3135 | if (skb->priority < priority) | |
3136 | break; | |
3137 | ||
3138 | skb = skb_dequeue(&chan->data_q); | |
3139 | ||
3140 | blocks = __get_blocks(hdev, skb); | |
3141 | if (blocks > hdev->block_cnt) | |
3142 | return; | |
3143 | ||
3144 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3145 | bt_cb(skb)->force_active); |
b71d385a AE |
3146 | |
3147 | hci_send_frame(skb); | |
3148 | hdev->acl_last_tx = jiffies; | |
3149 | ||
3150 | hdev->block_cnt -= blocks; | |
3151 | quote -= blocks; | |
3152 | ||
3153 | chan->sent += blocks; | |
3154 | chan->conn->sent += blocks; | |
3155 | } | |
3156 | } | |
3157 | ||
3158 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3159 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3160 | } |
3161 | ||
6039aa73 | 3162 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3163 | { |
3164 | BT_DBG("%s", hdev->name); | |
3165 | ||
bd1eb66b AE |
3166 | /* No ACL link over BR/EDR controller */ |
3167 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3168 | return; | |
3169 | ||
3170 | /* No AMP link over AMP controller */ | |
3171 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3172 | return; |
3173 | ||
3174 | switch (hdev->flow_ctl_mode) { | |
3175 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3176 | hci_sched_acl_pkt(hdev); | |
3177 | break; | |
3178 | ||
3179 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3180 | hci_sched_acl_blk(hdev); | |
3181 | break; | |
3182 | } | |
3183 | } | |
3184 | ||
1da177e4 | 3185 | /* Schedule SCO */ |
6039aa73 | 3186 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3187 | { |
3188 | struct hci_conn *conn; | |
3189 | struct sk_buff *skb; | |
3190 | int quote; | |
3191 | ||
3192 | BT_DBG("%s", hdev->name); | |
3193 | ||
52087a79 LAD |
3194 | if (!hci_conn_num(hdev, SCO_LINK)) |
3195 | return; | |
3196 | ||
1da177e4 LT |
3197 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3198 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3199 | BT_DBG("skb %p len %d", skb, skb->len); | |
3200 | hci_send_frame(skb); | |
3201 | ||
3202 | conn->sent++; | |
3203 | if (conn->sent == ~0) | |
3204 | conn->sent = 0; | |
3205 | } | |
3206 | } | |
3207 | } | |
3208 | ||
6039aa73 | 3209 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3210 | { |
3211 | struct hci_conn *conn; | |
3212 | struct sk_buff *skb; | |
3213 | int quote; | |
3214 | ||
3215 | BT_DBG("%s", hdev->name); | |
3216 | ||
52087a79 LAD |
3217 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3218 | return; | |
3219 | ||
8fc9ced3 GP |
3220 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3221 | "e))) { | |
b6a0dc82 MH |
3222 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3223 | BT_DBG("skb %p len %d", skb, skb->len); | |
3224 | hci_send_frame(skb); | |
3225 | ||
3226 | conn->sent++; | |
3227 | if (conn->sent == ~0) | |
3228 | conn->sent = 0; | |
3229 | } | |
3230 | } | |
3231 | } | |
3232 | ||
6039aa73 | 3233 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3234 | { |
73d80deb | 3235 | struct hci_chan *chan; |
6ed58ec5 | 3236 | struct sk_buff *skb; |
02b20f0b | 3237 | int quote, cnt, tmp; |
6ed58ec5 VT |
3238 | |
3239 | BT_DBG("%s", hdev->name); | |
3240 | ||
52087a79 LAD |
3241 | if (!hci_conn_num(hdev, LE_LINK)) |
3242 | return; | |
3243 | ||
6ed58ec5 VT |
3244 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3245 | /* LE tx timeout must be longer than maximum | |
3246 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3247 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3248 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3249 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3250 | } |
3251 | ||
3252 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3253 | tmp = cnt; |
73d80deb | 3254 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3255 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3256 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3257 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3258 | skb->len, skb->priority); |
6ed58ec5 | 3259 | |
ec1cce24 LAD |
3260 | /* Stop if priority has changed */ |
3261 | if (skb->priority < priority) | |
3262 | break; | |
3263 | ||
3264 | skb = skb_dequeue(&chan->data_q); | |
3265 | ||
6ed58ec5 VT |
3266 | hci_send_frame(skb); |
3267 | hdev->le_last_tx = jiffies; | |
3268 | ||
3269 | cnt--; | |
73d80deb LAD |
3270 | chan->sent++; |
3271 | chan->conn->sent++; | |
6ed58ec5 VT |
3272 | } |
3273 | } | |
73d80deb | 3274 | |
6ed58ec5 VT |
3275 | if (hdev->le_pkts) |
3276 | hdev->le_cnt = cnt; | |
3277 | else | |
3278 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3279 | |
3280 | if (cnt != tmp) | |
3281 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3282 | } |
3283 | ||
3eff45ea | 3284 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3285 | { |
3eff45ea | 3286 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3287 | struct sk_buff *skb; |
3288 | ||
6ed58ec5 | 3289 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3290 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
3291 | |
3292 | /* Schedule queues and send stuff to HCI driver */ | |
3293 | ||
3294 | hci_sched_acl(hdev); | |
3295 | ||
3296 | hci_sched_sco(hdev); | |
3297 | ||
b6a0dc82 MH |
3298 | hci_sched_esco(hdev); |
3299 | ||
6ed58ec5 VT |
3300 | hci_sched_le(hdev); |
3301 | ||
1da177e4 LT |
3302 | /* Send next queued raw (unknown type) packet */ |
3303 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
3304 | hci_send_frame(skb); | |
1da177e4 LT |
3305 | } |
3306 | ||
25985edc | 3307 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3308 | |
3309 | /* ACL data packet */ | |
6039aa73 | 3310 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3311 | { |
3312 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3313 | struct hci_conn *conn; | |
3314 | __u16 handle, flags; | |
3315 | ||
3316 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3317 | ||
3318 | handle = __le16_to_cpu(hdr->handle); | |
3319 | flags = hci_flags(handle); | |
3320 | handle = hci_handle(handle); | |
3321 | ||
f0e09510 | 3322 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3323 | handle, flags); |
1da177e4 LT |
3324 | |
3325 | hdev->stat.acl_rx++; | |
3326 | ||
3327 | hci_dev_lock(hdev); | |
3328 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3329 | hci_dev_unlock(hdev); | |
8e87d142 | 3330 | |
1da177e4 | 3331 | if (conn) { |
65983fc7 | 3332 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3333 | |
1da177e4 | 3334 | /* Send to upper protocol */ |
686ebf28 UF |
3335 | l2cap_recv_acldata(conn, skb, flags); |
3336 | return; | |
1da177e4 | 3337 | } else { |
8e87d142 | 3338 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3339 | hdev->name, handle); |
1da177e4 LT |
3340 | } |
3341 | ||
3342 | kfree_skb(skb); | |
3343 | } | |
3344 | ||
3345 | /* SCO data packet */ | |
6039aa73 | 3346 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3347 | { |
3348 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3349 | struct hci_conn *conn; | |
3350 | __u16 handle; | |
3351 | ||
3352 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3353 | ||
3354 | handle = __le16_to_cpu(hdr->handle); | |
3355 | ||
f0e09510 | 3356 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3357 | |
3358 | hdev->stat.sco_rx++; | |
3359 | ||
3360 | hci_dev_lock(hdev); | |
3361 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3362 | hci_dev_unlock(hdev); | |
3363 | ||
3364 | if (conn) { | |
1da177e4 | 3365 | /* Send to upper protocol */ |
686ebf28 UF |
3366 | sco_recv_scodata(conn, skb); |
3367 | return; | |
1da177e4 | 3368 | } else { |
8e87d142 | 3369 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3370 | hdev->name, handle); |
1da177e4 LT |
3371 | } |
3372 | ||
3373 | kfree_skb(skb); | |
3374 | } | |
3375 | ||
9238f36a JH |
3376 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3377 | { | |
3378 | struct sk_buff *skb; | |
3379 | ||
3380 | skb = skb_peek(&hdev->cmd_q); | |
3381 | if (!skb) | |
3382 | return true; | |
3383 | ||
3384 | return bt_cb(skb)->req.start; | |
3385 | } | |
3386 | ||
42c6b129 JH |
3387 | static void hci_resend_last(struct hci_dev *hdev) |
3388 | { | |
3389 | struct hci_command_hdr *sent; | |
3390 | struct sk_buff *skb; | |
3391 | u16 opcode; | |
3392 | ||
3393 | if (!hdev->sent_cmd) | |
3394 | return; | |
3395 | ||
3396 | sent = (void *) hdev->sent_cmd->data; | |
3397 | opcode = __le16_to_cpu(sent->opcode); | |
3398 | if (opcode == HCI_OP_RESET) | |
3399 | return; | |
3400 | ||
3401 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3402 | if (!skb) | |
3403 | return; | |
3404 | ||
3405 | skb_queue_head(&hdev->cmd_q, skb); | |
3406 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3407 | } | |
3408 | ||
9238f36a JH |
3409 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3410 | { | |
3411 | hci_req_complete_t req_complete = NULL; | |
3412 | struct sk_buff *skb; | |
3413 | unsigned long flags; | |
3414 | ||
3415 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3416 | ||
42c6b129 JH |
3417 | /* If the completed command doesn't match the last one that was |
3418 | * sent we need to do special handling of it. | |
9238f36a | 3419 | */ |
42c6b129 JH |
3420 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3421 | /* Some CSR based controllers generate a spontaneous | |
3422 | * reset complete event during init and any pending | |
3423 | * command will never be completed. In such a case we | |
3424 | * need to resend whatever was the last sent | |
3425 | * command. | |
3426 | */ | |
3427 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3428 | hci_resend_last(hdev); | |
3429 | ||
9238f36a | 3430 | return; |
42c6b129 | 3431 | } |
9238f36a JH |
3432 | |
3433 | /* If the command succeeded and there's still more commands in | |
3434 | * this request the request is not yet complete. | |
3435 | */ | |
3436 | if (!status && !hci_req_is_complete(hdev)) | |
3437 | return; | |
3438 | ||
3439 | /* If this was the last command in a request the complete | |
3440 | * callback would be found in hdev->sent_cmd instead of the | |
3441 | * command queue (hdev->cmd_q). | |
3442 | */ | |
3443 | if (hdev->sent_cmd) { | |
3444 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
3445 | if (req_complete) | |
3446 | goto call_complete; | |
3447 | } | |
3448 | ||
3449 | /* Remove all pending commands belonging to this request */ | |
3450 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3451 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3452 | if (bt_cb(skb)->req.start) { | |
3453 | __skb_queue_head(&hdev->cmd_q, skb); | |
3454 | break; | |
3455 | } | |
3456 | ||
3457 | req_complete = bt_cb(skb)->req.complete; | |
3458 | kfree_skb(skb); | |
3459 | } | |
3460 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3461 | ||
3462 | call_complete: | |
3463 | if (req_complete) | |
3464 | req_complete(hdev, status); | |
3465 | } | |
3466 | ||
b78752cc | 3467 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3468 | { |
b78752cc | 3469 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3470 | struct sk_buff *skb; |
3471 | ||
3472 | BT_DBG("%s", hdev->name); | |
3473 | ||
1da177e4 | 3474 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3475 | /* Send copy to monitor */ |
3476 | hci_send_to_monitor(hdev, skb); | |
3477 | ||
1da177e4 LT |
3478 | if (atomic_read(&hdev->promisc)) { |
3479 | /* Send copy to the sockets */ | |
470fe1b5 | 3480 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3481 | } |
3482 | ||
3483 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
3484 | kfree_skb(skb); | |
3485 | continue; | |
3486 | } | |
3487 | ||
3488 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3489 | /* Don't process data packets in this states. */ | |
0d48d939 | 3490 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3491 | case HCI_ACLDATA_PKT: |
3492 | case HCI_SCODATA_PKT: | |
3493 | kfree_skb(skb); | |
3494 | continue; | |
3ff50b79 | 3495 | } |
1da177e4 LT |
3496 | } |
3497 | ||
3498 | /* Process frame */ | |
0d48d939 | 3499 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3500 | case HCI_EVENT_PKT: |
b78752cc | 3501 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3502 | hci_event_packet(hdev, skb); |
3503 | break; | |
3504 | ||
3505 | case HCI_ACLDATA_PKT: | |
3506 | BT_DBG("%s ACL data packet", hdev->name); | |
3507 | hci_acldata_packet(hdev, skb); | |
3508 | break; | |
3509 | ||
3510 | case HCI_SCODATA_PKT: | |
3511 | BT_DBG("%s SCO data packet", hdev->name); | |
3512 | hci_scodata_packet(hdev, skb); | |
3513 | break; | |
3514 | ||
3515 | default: | |
3516 | kfree_skb(skb); | |
3517 | break; | |
3518 | } | |
3519 | } | |
1da177e4 LT |
3520 | } |
3521 | ||
c347b765 | 3522 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3523 | { |
c347b765 | 3524 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3525 | struct sk_buff *skb; |
3526 | ||
2104786b AE |
3527 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3528 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3529 | |
1da177e4 | 3530 | /* Send queued commands */ |
5a08ecce AE |
3531 | if (atomic_read(&hdev->cmd_cnt)) { |
3532 | skb = skb_dequeue(&hdev->cmd_q); | |
3533 | if (!skb) | |
3534 | return; | |
3535 | ||
7585b97a | 3536 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3537 | |
70f23020 AE |
3538 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
3539 | if (hdev->sent_cmd) { | |
1da177e4 LT |
3540 | atomic_dec(&hdev->cmd_cnt); |
3541 | hci_send_frame(skb); | |
7bdb8a5c SJ |
3542 | if (test_bit(HCI_RESET, &hdev->flags)) |
3543 | del_timer(&hdev->cmd_timer); | |
3544 | else | |
3545 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3546 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3547 | } else { |
3548 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3549 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3550 | } |
3551 | } | |
3552 | } | |
2519a1fc AG |
3553 | |
3554 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
3555 | { | |
3556 | /* General inquiry access code (GIAC) */ | |
3557 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3558 | struct hci_cp_inquiry cp; | |
3559 | ||
3560 | BT_DBG("%s", hdev->name); | |
3561 | ||
3562 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
3563 | return -EINPROGRESS; | |
3564 | ||
4663262c JH |
3565 | inquiry_cache_flush(hdev); |
3566 | ||
2519a1fc AG |
3567 | memset(&cp, 0, sizeof(cp)); |
3568 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3569 | cp.length = length; | |
3570 | ||
3571 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
3572 | } | |
023d5049 AG |
3573 | |
3574 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
3575 | { | |
3576 | BT_DBG("%s", hdev->name); | |
3577 | ||
3578 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 3579 | return -EALREADY; |
023d5049 AG |
3580 | |
3581 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
3582 | } | |
31f7956c AG |
3583 | |
3584 | u8 bdaddr_to_le(u8 bdaddr_type) | |
3585 | { | |
3586 | switch (bdaddr_type) { | |
3587 | case BDADDR_LE_PUBLIC: | |
3588 | return ADDR_LE_DEV_PUBLIC; | |
3589 | ||
3590 | default: | |
3591 | /* Fallback to LE Random address type */ | |
3592 | return ADDR_LE_DEV_RANDOM; | |
3593 | } | |
3594 | } |