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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 | ||
7b1abbbe | 82 | struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 event) |
75e84b7c JH |
83 | { |
84 | struct hci_ev_cmd_complete *ev; | |
85 | struct hci_event_hdr *hdr; | |
86 | struct sk_buff *skb; | |
87 | ||
88 | hci_dev_lock(hdev); | |
89 | ||
90 | skb = hdev->recv_evt; | |
91 | hdev->recv_evt = NULL; | |
92 | ||
93 | hci_dev_unlock(hdev); | |
94 | ||
95 | if (!skb) | |
96 | return ERR_PTR(-ENODATA); | |
97 | ||
98 | if (skb->len < sizeof(*hdr)) { | |
99 | BT_ERR("Too short HCI event"); | |
100 | goto failed; | |
101 | } | |
102 | ||
103 | hdr = (void *) skb->data; | |
104 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
105 | ||
7b1abbbe JH |
106 | if (event) { |
107 | if (hdr->evt != event) | |
108 | goto failed; | |
109 | return skb; | |
110 | } | |
111 | ||
75e84b7c JH |
112 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
113 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
114 | goto failed; | |
115 | } | |
116 | ||
117 | if (skb->len < sizeof(*ev)) { | |
118 | BT_ERR("Too short cmd_complete event"); | |
119 | goto failed; | |
120 | } | |
121 | ||
122 | ev = (void *) skb->data; | |
123 | skb_pull(skb, sizeof(*ev)); | |
124 | ||
125 | if (opcode == __le16_to_cpu(ev->opcode)) | |
126 | return skb; | |
127 | ||
128 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
129 | __le16_to_cpu(ev->opcode)); | |
130 | ||
131 | failed: | |
132 | kfree_skb(skb); | |
133 | return ERR_PTR(-ENODATA); | |
134 | } | |
135 | ||
7b1abbbe JH |
136 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
137 | void *param, u8 event, u32 timeout) | |
75e84b7c JH |
138 | { |
139 | DECLARE_WAITQUEUE(wait, current); | |
140 | struct hci_request req; | |
141 | int err = 0; | |
142 | ||
143 | BT_DBG("%s", hdev->name); | |
144 | ||
145 | hci_req_init(&req, hdev); | |
146 | ||
7b1abbbe | 147 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
148 | |
149 | hdev->req_status = HCI_REQ_PEND; | |
150 | ||
151 | err = hci_req_run(&req, hci_req_sync_complete); | |
152 | if (err < 0) | |
153 | return ERR_PTR(err); | |
154 | ||
155 | add_wait_queue(&hdev->req_wait_q, &wait); | |
156 | set_current_state(TASK_INTERRUPTIBLE); | |
157 | ||
158 | schedule_timeout(timeout); | |
159 | ||
160 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
161 | ||
162 | if (signal_pending(current)) | |
163 | return ERR_PTR(-EINTR); | |
164 | ||
165 | switch (hdev->req_status) { | |
166 | case HCI_REQ_DONE: | |
167 | err = -bt_to_errno(hdev->req_result); | |
168 | break; | |
169 | ||
170 | case HCI_REQ_CANCELED: | |
171 | err = -hdev->req_result; | |
172 | break; | |
173 | ||
174 | default: | |
175 | err = -ETIMEDOUT; | |
176 | break; | |
177 | } | |
178 | ||
179 | hdev->req_status = hdev->req_result = 0; | |
180 | ||
181 | BT_DBG("%s end: err %d", hdev->name, err); | |
182 | ||
183 | if (err < 0) | |
184 | return ERR_PTR(err); | |
185 | ||
7b1abbbe JH |
186 | return hci_get_cmd_complete(hdev, opcode, event); |
187 | } | |
188 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
189 | ||
190 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
191 | void *param, u32 timeout) | |
192 | { | |
193 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
194 | } |
195 | EXPORT_SYMBOL(__hci_cmd_sync); | |
196 | ||
1da177e4 | 197 | /* Execute request and wait for completion. */ |
01178cd4 | 198 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
199 | void (*func)(struct hci_request *req, |
200 | unsigned long opt), | |
01178cd4 | 201 | unsigned long opt, __u32 timeout) |
1da177e4 | 202 | { |
42c6b129 | 203 | struct hci_request req; |
1da177e4 LT |
204 | DECLARE_WAITQUEUE(wait, current); |
205 | int err = 0; | |
206 | ||
207 | BT_DBG("%s start", hdev->name); | |
208 | ||
42c6b129 JH |
209 | hci_req_init(&req, hdev); |
210 | ||
1da177e4 LT |
211 | hdev->req_status = HCI_REQ_PEND; |
212 | ||
42c6b129 | 213 | func(&req, opt); |
53cce22d | 214 | |
42c6b129 JH |
215 | err = hci_req_run(&req, hci_req_sync_complete); |
216 | if (err < 0) { | |
53cce22d | 217 | hdev->req_status = 0; |
920c8300 AG |
218 | |
219 | /* ENODATA means the HCI request command queue is empty. | |
220 | * This can happen when a request with conditionals doesn't | |
221 | * trigger any commands to be sent. This is normal behavior | |
222 | * and should not trigger an error return. | |
42c6b129 | 223 | */ |
920c8300 AG |
224 | if (err == -ENODATA) |
225 | return 0; | |
226 | ||
227 | return err; | |
53cce22d JH |
228 | } |
229 | ||
bc4445c7 AG |
230 | add_wait_queue(&hdev->req_wait_q, &wait); |
231 | set_current_state(TASK_INTERRUPTIBLE); | |
232 | ||
1da177e4 LT |
233 | schedule_timeout(timeout); |
234 | ||
235 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
236 | ||
237 | if (signal_pending(current)) | |
238 | return -EINTR; | |
239 | ||
240 | switch (hdev->req_status) { | |
241 | case HCI_REQ_DONE: | |
e175072f | 242 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
243 | break; |
244 | ||
245 | case HCI_REQ_CANCELED: | |
246 | err = -hdev->req_result; | |
247 | break; | |
248 | ||
249 | default: | |
250 | err = -ETIMEDOUT; | |
251 | break; | |
3ff50b79 | 252 | } |
1da177e4 | 253 | |
a5040efa | 254 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
255 | |
256 | BT_DBG("%s end: err %d", hdev->name, err); | |
257 | ||
258 | return err; | |
259 | } | |
260 | ||
01178cd4 | 261 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
262 | void (*req)(struct hci_request *req, |
263 | unsigned long opt), | |
01178cd4 | 264 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
265 | { |
266 | int ret; | |
267 | ||
7c6a329e MH |
268 | if (!test_bit(HCI_UP, &hdev->flags)) |
269 | return -ENETDOWN; | |
270 | ||
1da177e4 LT |
271 | /* Serialize all requests */ |
272 | hci_req_lock(hdev); | |
01178cd4 | 273 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
274 | hci_req_unlock(hdev); |
275 | ||
276 | return ret; | |
277 | } | |
278 | ||
42c6b129 | 279 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 280 | { |
42c6b129 | 281 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
282 | |
283 | /* Reset device */ | |
42c6b129 JH |
284 | set_bit(HCI_RESET, &req->hdev->flags); |
285 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
286 | } |
287 | ||
42c6b129 | 288 | static void bredr_init(struct hci_request *req) |
1da177e4 | 289 | { |
42c6b129 | 290 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 291 | |
1da177e4 | 292 | /* Read Local Supported Features */ |
42c6b129 | 293 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 294 | |
1143e5a6 | 295 | /* Read Local Version */ |
42c6b129 | 296 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
297 | |
298 | /* Read BD Address */ | |
42c6b129 | 299 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
300 | } |
301 | ||
42c6b129 | 302 | static void amp_init(struct hci_request *req) |
e61ef499 | 303 | { |
42c6b129 | 304 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 305 | |
e61ef499 | 306 | /* Read Local Version */ |
42c6b129 | 307 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 AE |
308 | |
309 | /* Read Local AMP Info */ | |
42c6b129 | 310 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
311 | |
312 | /* Read Data Blk size */ | |
42c6b129 | 313 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
e61ef499 AE |
314 | } |
315 | ||
42c6b129 | 316 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 317 | { |
42c6b129 JH |
318 | struct hci_dev *hdev = req->hdev; |
319 | struct hci_request init_req; | |
e61ef499 AE |
320 | struct sk_buff *skb; |
321 | ||
322 | BT_DBG("%s %ld", hdev->name, opt); | |
323 | ||
324 | /* Driver initialization */ | |
325 | ||
42c6b129 JH |
326 | hci_req_init(&init_req, hdev); |
327 | ||
e61ef499 AE |
328 | /* Special commands */ |
329 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
330 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
331 | skb->dev = (void *) hdev; | |
332 | ||
42c6b129 JH |
333 | if (skb_queue_empty(&init_req.cmd_q)) |
334 | bt_cb(skb)->req.start = true; | |
335 | ||
336 | skb_queue_tail(&init_req.cmd_q, skb); | |
e61ef499 AE |
337 | } |
338 | skb_queue_purge(&hdev->driver_init); | |
339 | ||
42c6b129 JH |
340 | hci_req_run(&init_req, NULL); |
341 | ||
11778716 AE |
342 | /* Reset */ |
343 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 344 | hci_reset_req(req, 0); |
11778716 | 345 | |
e61ef499 AE |
346 | switch (hdev->dev_type) { |
347 | case HCI_BREDR: | |
42c6b129 | 348 | bredr_init(req); |
e61ef499 AE |
349 | break; |
350 | ||
351 | case HCI_AMP: | |
42c6b129 | 352 | amp_init(req); |
e61ef499 AE |
353 | break; |
354 | ||
355 | default: | |
356 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
357 | break; | |
358 | } | |
e61ef499 AE |
359 | } |
360 | ||
42c6b129 | 361 | static void bredr_setup(struct hci_request *req) |
2177bab5 JH |
362 | { |
363 | struct hci_cp_delete_stored_link_key cp; | |
364 | __le16 param; | |
365 | __u8 flt_type; | |
366 | ||
367 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 368 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
369 | |
370 | /* Read Class of Device */ | |
42c6b129 | 371 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
372 | |
373 | /* Read Local Name */ | |
42c6b129 | 374 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
375 | |
376 | /* Read Voice Setting */ | |
42c6b129 | 377 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 JH |
378 | |
379 | /* Clear Event Filters */ | |
380 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 381 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
382 | |
383 | /* Connection accept timeout ~20 secs */ | |
384 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 385 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
386 | |
387 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
388 | cp.delete_all = 0x01; | |
42c6b129 | 389 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); |
f332ec66 JH |
390 | |
391 | /* Read page scan parameters */ | |
392 | if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
393 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
394 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
395 | } | |
2177bab5 JH |
396 | } |
397 | ||
42c6b129 | 398 | static void le_setup(struct hci_request *req) |
2177bab5 JH |
399 | { |
400 | /* Read LE Buffer Size */ | |
42c6b129 | 401 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
402 | |
403 | /* Read LE Local Supported Features */ | |
42c6b129 | 404 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
405 | |
406 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 407 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
408 | |
409 | /* Read LE White List Size */ | |
42c6b129 | 410 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
411 | |
412 | /* Read LE Supported States */ | |
42c6b129 | 413 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
2177bab5 JH |
414 | } |
415 | ||
416 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
417 | { | |
418 | if (lmp_ext_inq_capable(hdev)) | |
419 | return 0x02; | |
420 | ||
421 | if (lmp_inq_rssi_capable(hdev)) | |
422 | return 0x01; | |
423 | ||
424 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
425 | hdev->lmp_subver == 0x0757) | |
426 | return 0x01; | |
427 | ||
428 | if (hdev->manufacturer == 15) { | |
429 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
430 | return 0x01; | |
431 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
432 | return 0x01; | |
433 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
434 | return 0x01; | |
435 | } | |
436 | ||
437 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
438 | hdev->lmp_subver == 0x1805) | |
439 | return 0x01; | |
440 | ||
441 | return 0x00; | |
442 | } | |
443 | ||
42c6b129 | 444 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
445 | { |
446 | u8 mode; | |
447 | ||
42c6b129 | 448 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 449 | |
42c6b129 | 450 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
451 | } |
452 | ||
42c6b129 | 453 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 454 | { |
42c6b129 JH |
455 | struct hci_dev *hdev = req->hdev; |
456 | ||
2177bab5 JH |
457 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
458 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
459 | * command otherwise. | |
460 | */ | |
461 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
462 | ||
463 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
464 | * any event mask for pre 1.2 devices. | |
465 | */ | |
466 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
467 | return; | |
468 | ||
469 | if (lmp_bredr_capable(hdev)) { | |
470 | events[4] |= 0x01; /* Flow Specification Complete */ | |
471 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
472 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
473 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
474 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
475 | } | |
476 | ||
477 | if (lmp_inq_rssi_capable(hdev)) | |
478 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
479 | ||
480 | if (lmp_sniffsubr_capable(hdev)) | |
481 | events[5] |= 0x20; /* Sniff Subrating */ | |
482 | ||
483 | if (lmp_pause_enc_capable(hdev)) | |
484 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
485 | ||
486 | if (lmp_ext_inq_capable(hdev)) | |
487 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
488 | ||
489 | if (lmp_no_flush_capable(hdev)) | |
490 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
491 | ||
492 | if (lmp_lsto_capable(hdev)) | |
493 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
494 | ||
495 | if (lmp_ssp_capable(hdev)) { | |
496 | events[6] |= 0x01; /* IO Capability Request */ | |
497 | events[6] |= 0x02; /* IO Capability Response */ | |
498 | events[6] |= 0x04; /* User Confirmation Request */ | |
499 | events[6] |= 0x08; /* User Passkey Request */ | |
500 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
501 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
502 | events[7] |= 0x04; /* User Passkey Notification */ | |
503 | events[7] |= 0x08; /* Keypress Notification */ | |
504 | events[7] |= 0x10; /* Remote Host Supported | |
505 | * Features Notification | |
506 | */ | |
507 | } | |
508 | ||
509 | if (lmp_le_capable(hdev)) | |
510 | events[7] |= 0x20; /* LE Meta-Event */ | |
511 | ||
42c6b129 | 512 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
513 | |
514 | if (lmp_le_capable(hdev)) { | |
515 | memset(events, 0, sizeof(events)); | |
516 | events[0] = 0x1f; | |
42c6b129 JH |
517 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
518 | sizeof(events), events); | |
2177bab5 JH |
519 | } |
520 | } | |
521 | ||
42c6b129 | 522 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 523 | { |
42c6b129 JH |
524 | struct hci_dev *hdev = req->hdev; |
525 | ||
2177bab5 | 526 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 527 | bredr_setup(req); |
2177bab5 JH |
528 | |
529 | if (lmp_le_capable(hdev)) | |
42c6b129 | 530 | le_setup(req); |
2177bab5 | 531 | |
42c6b129 | 532 | hci_setup_event_mask(req); |
2177bab5 JH |
533 | |
534 | if (hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 535 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
536 | |
537 | if (lmp_ssp_capable(hdev)) { | |
538 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
539 | u8 mode = 0x01; | |
42c6b129 JH |
540 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
541 | sizeof(mode), &mode); | |
2177bab5 JH |
542 | } else { |
543 | struct hci_cp_write_eir cp; | |
544 | ||
545 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
546 | memset(&cp, 0, sizeof(cp)); | |
547 | ||
42c6b129 | 548 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
549 | } |
550 | } | |
551 | ||
552 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 553 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
554 | |
555 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 556 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
557 | |
558 | if (lmp_ext_feat_capable(hdev)) { | |
559 | struct hci_cp_read_local_ext_features cp; | |
560 | ||
561 | cp.page = 0x01; | |
42c6b129 JH |
562 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
563 | sizeof(cp), &cp); | |
2177bab5 JH |
564 | } |
565 | ||
566 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
567 | u8 enable = 1; | |
42c6b129 JH |
568 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
569 | &enable); | |
2177bab5 JH |
570 | } |
571 | } | |
572 | ||
42c6b129 | 573 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 574 | { |
42c6b129 | 575 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
576 | struct hci_cp_write_def_link_policy cp; |
577 | u16 link_policy = 0; | |
578 | ||
579 | if (lmp_rswitch_capable(hdev)) | |
580 | link_policy |= HCI_LP_RSWITCH; | |
581 | if (lmp_hold_capable(hdev)) | |
582 | link_policy |= HCI_LP_HOLD; | |
583 | if (lmp_sniff_capable(hdev)) | |
584 | link_policy |= HCI_LP_SNIFF; | |
585 | if (lmp_park_capable(hdev)) | |
586 | link_policy |= HCI_LP_PARK; | |
587 | ||
588 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 589 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
590 | } |
591 | ||
42c6b129 | 592 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 593 | { |
42c6b129 | 594 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
595 | struct hci_cp_write_le_host_supported cp; |
596 | ||
597 | memset(&cp, 0, sizeof(cp)); | |
598 | ||
599 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
600 | cp.le = 0x01; | |
601 | cp.simul = lmp_le_br_capable(hdev); | |
602 | } | |
603 | ||
604 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
605 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
606 | &cp); | |
2177bab5 JH |
607 | } |
608 | ||
42c6b129 | 609 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 610 | { |
42c6b129 JH |
611 | struct hci_dev *hdev = req->hdev; |
612 | ||
2177bab5 | 613 | if (hdev->commands[5] & 0x10) |
42c6b129 | 614 | hci_setup_link_policy(req); |
2177bab5 | 615 | |
04b4edcb | 616 | if (lmp_le_capable(hdev)) { |
42c6b129 | 617 | hci_set_le_support(req); |
04b4edcb JH |
618 | hci_update_ad(req); |
619 | } | |
2177bab5 JH |
620 | } |
621 | ||
622 | static int __hci_init(struct hci_dev *hdev) | |
623 | { | |
624 | int err; | |
625 | ||
626 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
627 | if (err < 0) | |
628 | return err; | |
629 | ||
630 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
631 | * BR/EDR/LE type controllers. AMP controllers only need the | |
632 | * first stage init. | |
633 | */ | |
634 | if (hdev->dev_type != HCI_BREDR) | |
635 | return 0; | |
636 | ||
637 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
638 | if (err < 0) | |
639 | return err; | |
640 | ||
641 | return __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); | |
642 | } | |
643 | ||
42c6b129 | 644 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
645 | { |
646 | __u8 scan = opt; | |
647 | ||
42c6b129 | 648 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
649 | |
650 | /* Inquiry and Page scans */ | |
42c6b129 | 651 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
652 | } |
653 | ||
42c6b129 | 654 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
655 | { |
656 | __u8 auth = opt; | |
657 | ||
42c6b129 | 658 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
659 | |
660 | /* Authentication */ | |
42c6b129 | 661 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
662 | } |
663 | ||
42c6b129 | 664 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
665 | { |
666 | __u8 encrypt = opt; | |
667 | ||
42c6b129 | 668 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 669 | |
e4e8e37c | 670 | /* Encryption */ |
42c6b129 | 671 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
672 | } |
673 | ||
42c6b129 | 674 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
675 | { |
676 | __le16 policy = cpu_to_le16(opt); | |
677 | ||
42c6b129 | 678 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
679 | |
680 | /* Default link policy */ | |
42c6b129 | 681 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
682 | } |
683 | ||
8e87d142 | 684 | /* Get HCI device by index. |
1da177e4 LT |
685 | * Device is held on return. */ |
686 | struct hci_dev *hci_dev_get(int index) | |
687 | { | |
8035ded4 | 688 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
689 | |
690 | BT_DBG("%d", index); | |
691 | ||
692 | if (index < 0) | |
693 | return NULL; | |
694 | ||
695 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 696 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
697 | if (d->id == index) { |
698 | hdev = hci_dev_hold(d); | |
699 | break; | |
700 | } | |
701 | } | |
702 | read_unlock(&hci_dev_list_lock); | |
703 | return hdev; | |
704 | } | |
1da177e4 LT |
705 | |
706 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 707 | |
30dc78e1 JH |
708 | bool hci_discovery_active(struct hci_dev *hdev) |
709 | { | |
710 | struct discovery_state *discov = &hdev->discovery; | |
711 | ||
6fbe195d | 712 | switch (discov->state) { |
343f935b | 713 | case DISCOVERY_FINDING: |
6fbe195d | 714 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
715 | return true; |
716 | ||
6fbe195d AG |
717 | default: |
718 | return false; | |
719 | } | |
30dc78e1 JH |
720 | } |
721 | ||
ff9ef578 JH |
722 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
723 | { | |
724 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
725 | ||
726 | if (hdev->discovery.state == state) | |
727 | return; | |
728 | ||
729 | switch (state) { | |
730 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
731 | if (hdev->discovery.state != DISCOVERY_STARTING) |
732 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
733 | break; |
734 | case DISCOVERY_STARTING: | |
735 | break; | |
343f935b | 736 | case DISCOVERY_FINDING: |
ff9ef578 JH |
737 | mgmt_discovering(hdev, 1); |
738 | break; | |
30dc78e1 JH |
739 | case DISCOVERY_RESOLVING: |
740 | break; | |
ff9ef578 JH |
741 | case DISCOVERY_STOPPING: |
742 | break; | |
743 | } | |
744 | ||
745 | hdev->discovery.state = state; | |
746 | } | |
747 | ||
1da177e4 LT |
748 | static void inquiry_cache_flush(struct hci_dev *hdev) |
749 | { | |
30883512 | 750 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 751 | struct inquiry_entry *p, *n; |
1da177e4 | 752 | |
561aafbc JH |
753 | list_for_each_entry_safe(p, n, &cache->all, all) { |
754 | list_del(&p->all); | |
b57c1a56 | 755 | kfree(p); |
1da177e4 | 756 | } |
561aafbc JH |
757 | |
758 | INIT_LIST_HEAD(&cache->unknown); | |
759 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
760 | } |
761 | ||
a8c5fb1a GP |
762 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
763 | bdaddr_t *bdaddr) | |
1da177e4 | 764 | { |
30883512 | 765 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
766 | struct inquiry_entry *e; |
767 | ||
6ed93dc6 | 768 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 769 | |
561aafbc JH |
770 | list_for_each_entry(e, &cache->all, all) { |
771 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
772 | return e; | |
773 | } | |
774 | ||
775 | return NULL; | |
776 | } | |
777 | ||
778 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 779 | bdaddr_t *bdaddr) |
561aafbc | 780 | { |
30883512 | 781 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
782 | struct inquiry_entry *e; |
783 | ||
6ed93dc6 | 784 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
785 | |
786 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 787 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
788 | return e; |
789 | } | |
790 | ||
791 | return NULL; | |
1da177e4 LT |
792 | } |
793 | ||
30dc78e1 | 794 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
795 | bdaddr_t *bdaddr, |
796 | int state) | |
30dc78e1 JH |
797 | { |
798 | struct discovery_state *cache = &hdev->discovery; | |
799 | struct inquiry_entry *e; | |
800 | ||
6ed93dc6 | 801 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
802 | |
803 | list_for_each_entry(e, &cache->resolve, list) { | |
804 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
805 | return e; | |
806 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
807 | return e; | |
808 | } | |
809 | ||
810 | return NULL; | |
811 | } | |
812 | ||
a3d4e20a | 813 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 814 | struct inquiry_entry *ie) |
a3d4e20a JH |
815 | { |
816 | struct discovery_state *cache = &hdev->discovery; | |
817 | struct list_head *pos = &cache->resolve; | |
818 | struct inquiry_entry *p; | |
819 | ||
820 | list_del(&ie->list); | |
821 | ||
822 | list_for_each_entry(p, &cache->resolve, list) { | |
823 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 824 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
825 | break; |
826 | pos = &p->list; | |
827 | } | |
828 | ||
829 | list_add(&ie->list, pos); | |
830 | } | |
831 | ||
3175405b | 832 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 833 | bool name_known, bool *ssp) |
1da177e4 | 834 | { |
30883512 | 835 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 836 | struct inquiry_entry *ie; |
1da177e4 | 837 | |
6ed93dc6 | 838 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 839 | |
2b2fec4d SJ |
840 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
841 | ||
388fc8fa JH |
842 | if (ssp) |
843 | *ssp = data->ssp_mode; | |
844 | ||
70f23020 | 845 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 846 | if (ie) { |
388fc8fa JH |
847 | if (ie->data.ssp_mode && ssp) |
848 | *ssp = true; | |
849 | ||
a3d4e20a | 850 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 851 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
852 | ie->data.rssi = data->rssi; |
853 | hci_inquiry_cache_update_resolve(hdev, ie); | |
854 | } | |
855 | ||
561aafbc | 856 | goto update; |
a3d4e20a | 857 | } |
561aafbc JH |
858 | |
859 | /* Entry not in the cache. Add new one. */ | |
860 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
861 | if (!ie) | |
3175405b | 862 | return false; |
561aafbc JH |
863 | |
864 | list_add(&ie->all, &cache->all); | |
865 | ||
866 | if (name_known) { | |
867 | ie->name_state = NAME_KNOWN; | |
868 | } else { | |
869 | ie->name_state = NAME_NOT_KNOWN; | |
870 | list_add(&ie->list, &cache->unknown); | |
871 | } | |
70f23020 | 872 | |
561aafbc JH |
873 | update: |
874 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 875 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
876 | ie->name_state = NAME_KNOWN; |
877 | list_del(&ie->list); | |
1da177e4 LT |
878 | } |
879 | ||
70f23020 AE |
880 | memcpy(&ie->data, data, sizeof(*data)); |
881 | ie->timestamp = jiffies; | |
1da177e4 | 882 | cache->timestamp = jiffies; |
3175405b JH |
883 | |
884 | if (ie->name_state == NAME_NOT_KNOWN) | |
885 | return false; | |
886 | ||
887 | return true; | |
1da177e4 LT |
888 | } |
889 | ||
890 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
891 | { | |
30883512 | 892 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
893 | struct inquiry_info *info = (struct inquiry_info *) buf; |
894 | struct inquiry_entry *e; | |
895 | int copied = 0; | |
896 | ||
561aafbc | 897 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 898 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
899 | |
900 | if (copied >= num) | |
901 | break; | |
902 | ||
1da177e4 LT |
903 | bacpy(&info->bdaddr, &data->bdaddr); |
904 | info->pscan_rep_mode = data->pscan_rep_mode; | |
905 | info->pscan_period_mode = data->pscan_period_mode; | |
906 | info->pscan_mode = data->pscan_mode; | |
907 | memcpy(info->dev_class, data->dev_class, 3); | |
908 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 909 | |
1da177e4 | 910 | info++; |
b57c1a56 | 911 | copied++; |
1da177e4 LT |
912 | } |
913 | ||
914 | BT_DBG("cache %p, copied %d", cache, copied); | |
915 | return copied; | |
916 | } | |
917 | ||
42c6b129 | 918 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
919 | { |
920 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 921 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
922 | struct hci_cp_inquiry cp; |
923 | ||
924 | BT_DBG("%s", hdev->name); | |
925 | ||
926 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
927 | return; | |
928 | ||
929 | /* Start Inquiry */ | |
930 | memcpy(&cp.lap, &ir->lap, 3); | |
931 | cp.length = ir->length; | |
932 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 933 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
934 | } |
935 | ||
3e13fa1e AG |
936 | static int wait_inquiry(void *word) |
937 | { | |
938 | schedule(); | |
939 | return signal_pending(current); | |
940 | } | |
941 | ||
1da177e4 LT |
942 | int hci_inquiry(void __user *arg) |
943 | { | |
944 | __u8 __user *ptr = arg; | |
945 | struct hci_inquiry_req ir; | |
946 | struct hci_dev *hdev; | |
947 | int err = 0, do_inquiry = 0, max_rsp; | |
948 | long timeo; | |
949 | __u8 *buf; | |
950 | ||
951 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
952 | return -EFAULT; | |
953 | ||
5a08ecce AE |
954 | hdev = hci_dev_get(ir.dev_id); |
955 | if (!hdev) | |
1da177e4 LT |
956 | return -ENODEV; |
957 | ||
09fd0de5 | 958 | hci_dev_lock(hdev); |
8e87d142 | 959 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 960 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
961 | inquiry_cache_flush(hdev); |
962 | do_inquiry = 1; | |
963 | } | |
09fd0de5 | 964 | hci_dev_unlock(hdev); |
1da177e4 | 965 | |
04837f64 | 966 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
967 | |
968 | if (do_inquiry) { | |
01178cd4 JH |
969 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
970 | timeo); | |
70f23020 AE |
971 | if (err < 0) |
972 | goto done; | |
3e13fa1e AG |
973 | |
974 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
975 | * cleared). If it is interrupted by a signal, return -EINTR. | |
976 | */ | |
977 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
978 | TASK_INTERRUPTIBLE)) | |
979 | return -EINTR; | |
70f23020 | 980 | } |
1da177e4 | 981 | |
8fc9ced3 GP |
982 | /* for unlimited number of responses we will use buffer with |
983 | * 255 entries | |
984 | */ | |
1da177e4 LT |
985 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
986 | ||
987 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
988 | * copy it to the user space. | |
989 | */ | |
01df8c31 | 990 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 991 | if (!buf) { |
1da177e4 LT |
992 | err = -ENOMEM; |
993 | goto done; | |
994 | } | |
995 | ||
09fd0de5 | 996 | hci_dev_lock(hdev); |
1da177e4 | 997 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 998 | hci_dev_unlock(hdev); |
1da177e4 LT |
999 | |
1000 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1001 | ||
1002 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1003 | ptr += sizeof(ir); | |
1004 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1005 | ir.num_rsp)) |
1da177e4 | 1006 | err = -EFAULT; |
8e87d142 | 1007 | } else |
1da177e4 LT |
1008 | err = -EFAULT; |
1009 | ||
1010 | kfree(buf); | |
1011 | ||
1012 | done: | |
1013 | hci_dev_put(hdev); | |
1014 | return err; | |
1015 | } | |
1016 | ||
3f0f524b JH |
1017 | static u8 create_ad(struct hci_dev *hdev, u8 *ptr) |
1018 | { | |
1019 | u8 ad_len = 0, flags = 0; | |
1020 | size_t name_len; | |
1021 | ||
1022 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) | |
1023 | flags |= LE_AD_GENERAL; | |
1024 | ||
1025 | if (!lmp_bredr_capable(hdev)) | |
1026 | flags |= LE_AD_NO_BREDR; | |
1027 | ||
1028 | if (lmp_le_br_capable(hdev)) | |
1029 | flags |= LE_AD_SIM_LE_BREDR_CTRL; | |
1030 | ||
1031 | if (lmp_host_le_br_capable(hdev)) | |
1032 | flags |= LE_AD_SIM_LE_BREDR_HOST; | |
1033 | ||
1034 | if (flags) { | |
1035 | BT_DBG("adv flags 0x%02x", flags); | |
1036 | ||
1037 | ptr[0] = 2; | |
1038 | ptr[1] = EIR_FLAGS; | |
1039 | ptr[2] = flags; | |
1040 | ||
1041 | ad_len += 3; | |
1042 | ptr += 3; | |
1043 | } | |
1044 | ||
1045 | if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) { | |
1046 | ptr[0] = 2; | |
1047 | ptr[1] = EIR_TX_POWER; | |
1048 | ptr[2] = (u8) hdev->adv_tx_power; | |
1049 | ||
1050 | ad_len += 3; | |
1051 | ptr += 3; | |
1052 | } | |
1053 | ||
1054 | name_len = strlen(hdev->dev_name); | |
1055 | if (name_len > 0) { | |
1056 | size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; | |
1057 | ||
1058 | if (name_len > max_len) { | |
1059 | name_len = max_len; | |
1060 | ptr[1] = EIR_NAME_SHORT; | |
1061 | } else | |
1062 | ptr[1] = EIR_NAME_COMPLETE; | |
1063 | ||
1064 | ptr[0] = name_len + 1; | |
1065 | ||
1066 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
1067 | ||
1068 | ad_len += (name_len + 2); | |
1069 | ptr += (name_len + 2); | |
1070 | } | |
1071 | ||
1072 | return ad_len; | |
1073 | } | |
1074 | ||
04b4edcb | 1075 | void hci_update_ad(struct hci_request *req) |
3f0f524b | 1076 | { |
04b4edcb | 1077 | struct hci_dev *hdev = req->hdev; |
3f0f524b JH |
1078 | struct hci_cp_le_set_adv_data cp; |
1079 | u8 len; | |
3f0f524b | 1080 | |
04b4edcb JH |
1081 | if (!lmp_le_capable(hdev)) |
1082 | return; | |
3f0f524b JH |
1083 | |
1084 | memset(&cp, 0, sizeof(cp)); | |
1085 | ||
1086 | len = create_ad(hdev, cp.data); | |
1087 | ||
1088 | if (hdev->adv_data_len == len && | |
04b4edcb JH |
1089 | memcmp(cp.data, hdev->adv_data, len) == 0) |
1090 | return; | |
3f0f524b JH |
1091 | |
1092 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1093 | hdev->adv_data_len = len; | |
1094 | ||
1095 | cp.length = len; | |
3f0f524b | 1096 | |
04b4edcb | 1097 | hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); |
3f0f524b JH |
1098 | } |
1099 | ||
1da177e4 LT |
1100 | /* ---- HCI ioctl helpers ---- */ |
1101 | ||
1102 | int hci_dev_open(__u16 dev) | |
1103 | { | |
1104 | struct hci_dev *hdev; | |
1105 | int ret = 0; | |
1106 | ||
5a08ecce AE |
1107 | hdev = hci_dev_get(dev); |
1108 | if (!hdev) | |
1da177e4 LT |
1109 | return -ENODEV; |
1110 | ||
1111 | BT_DBG("%s %p", hdev->name, hdev); | |
1112 | ||
1113 | hci_req_lock(hdev); | |
1114 | ||
94324962 JH |
1115 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1116 | ret = -ENODEV; | |
1117 | goto done; | |
1118 | } | |
1119 | ||
611b30f7 MH |
1120 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
1121 | ret = -ERFKILL; | |
1122 | goto done; | |
1123 | } | |
1124 | ||
1da177e4 LT |
1125 | if (test_bit(HCI_UP, &hdev->flags)) { |
1126 | ret = -EALREADY; | |
1127 | goto done; | |
1128 | } | |
1129 | ||
1130 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
1131 | set_bit(HCI_RAW, &hdev->flags); | |
1132 | ||
07e3b94a AE |
1133 | /* Treat all non BR/EDR controllers as raw devices if |
1134 | enable_hs is not set */ | |
1135 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
1136 | set_bit(HCI_RAW, &hdev->flags); |
1137 | ||
1da177e4 LT |
1138 | if (hdev->open(hdev)) { |
1139 | ret = -EIO; | |
1140 | goto done; | |
1141 | } | |
1142 | ||
1143 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
1144 | atomic_set(&hdev->cmd_cnt, 1); | |
1145 | set_bit(HCI_INIT, &hdev->flags); | |
2177bab5 | 1146 | ret = __hci_init(hdev); |
1da177e4 LT |
1147 | clear_bit(HCI_INIT, &hdev->flags); |
1148 | } | |
1149 | ||
1150 | if (!ret) { | |
1151 | hci_dev_hold(hdev); | |
1152 | set_bit(HCI_UP, &hdev->flags); | |
1153 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a AE |
1154 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
1155 | mgmt_valid_hdev(hdev)) { | |
09fd0de5 | 1156 | hci_dev_lock(hdev); |
744cf19e | 1157 | mgmt_powered(hdev, 1); |
09fd0de5 | 1158 | hci_dev_unlock(hdev); |
56e5cb86 | 1159 | } |
8e87d142 | 1160 | } else { |
1da177e4 | 1161 | /* Init failed, cleanup */ |
3eff45ea | 1162 | flush_work(&hdev->tx_work); |
c347b765 | 1163 | flush_work(&hdev->cmd_work); |
b78752cc | 1164 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1165 | |
1166 | skb_queue_purge(&hdev->cmd_q); | |
1167 | skb_queue_purge(&hdev->rx_q); | |
1168 | ||
1169 | if (hdev->flush) | |
1170 | hdev->flush(hdev); | |
1171 | ||
1172 | if (hdev->sent_cmd) { | |
1173 | kfree_skb(hdev->sent_cmd); | |
1174 | hdev->sent_cmd = NULL; | |
1175 | } | |
1176 | ||
1177 | hdev->close(hdev); | |
1178 | hdev->flags = 0; | |
1179 | } | |
1180 | ||
1181 | done: | |
1182 | hci_req_unlock(hdev); | |
1183 | hci_dev_put(hdev); | |
1184 | return ret; | |
1185 | } | |
1186 | ||
1187 | static int hci_dev_do_close(struct hci_dev *hdev) | |
1188 | { | |
1189 | BT_DBG("%s %p", hdev->name, hdev); | |
1190 | ||
28b75a89 AG |
1191 | cancel_work_sync(&hdev->le_scan); |
1192 | ||
78c04c0b VCG |
1193 | cancel_delayed_work(&hdev->power_off); |
1194 | ||
1da177e4 LT |
1195 | hci_req_cancel(hdev, ENODEV); |
1196 | hci_req_lock(hdev); | |
1197 | ||
1198 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1199 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1200 | hci_req_unlock(hdev); |
1201 | return 0; | |
1202 | } | |
1203 | ||
3eff45ea GP |
1204 | /* Flush RX and TX works */ |
1205 | flush_work(&hdev->tx_work); | |
b78752cc | 1206 | flush_work(&hdev->rx_work); |
1da177e4 | 1207 | |
16ab91ab | 1208 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1209 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1210 | hdev->discov_timeout = 0; |
5e5282bb | 1211 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1212 | } |
1213 | ||
a8b2d5c2 | 1214 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1215 | cancel_delayed_work(&hdev->service_cache); |
1216 | ||
7ba8b4be AG |
1217 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1218 | ||
09fd0de5 | 1219 | hci_dev_lock(hdev); |
1da177e4 LT |
1220 | inquiry_cache_flush(hdev); |
1221 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 1222 | hci_dev_unlock(hdev); |
1da177e4 LT |
1223 | |
1224 | hci_notify(hdev, HCI_DEV_DOWN); | |
1225 | ||
1226 | if (hdev->flush) | |
1227 | hdev->flush(hdev); | |
1228 | ||
1229 | /* Reset device */ | |
1230 | skb_queue_purge(&hdev->cmd_q); | |
1231 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1232 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 1233 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1234 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1235 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1236 | clear_bit(HCI_INIT, &hdev->flags); |
1237 | } | |
1238 | ||
c347b765 GP |
1239 | /* flush cmd work */ |
1240 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1241 | |
1242 | /* Drop queues */ | |
1243 | skb_queue_purge(&hdev->rx_q); | |
1244 | skb_queue_purge(&hdev->cmd_q); | |
1245 | skb_queue_purge(&hdev->raw_q); | |
1246 | ||
1247 | /* Drop last sent command */ | |
1248 | if (hdev->sent_cmd) { | |
b79f44c1 | 1249 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1250 | kfree_skb(hdev->sent_cmd); |
1251 | hdev->sent_cmd = NULL; | |
1252 | } | |
1253 | ||
b6ddb638 JH |
1254 | kfree_skb(hdev->recv_evt); |
1255 | hdev->recv_evt = NULL; | |
1256 | ||
1da177e4 LT |
1257 | /* After this point our queues are empty |
1258 | * and no tasks are scheduled. */ | |
1259 | hdev->close(hdev); | |
1260 | ||
35b973c9 JH |
1261 | /* Clear flags */ |
1262 | hdev->flags = 0; | |
1263 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1264 | ||
bb4b2a9a AE |
1265 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
1266 | mgmt_valid_hdev(hdev)) { | |
8ee56540 MH |
1267 | hci_dev_lock(hdev); |
1268 | mgmt_powered(hdev, 0); | |
1269 | hci_dev_unlock(hdev); | |
1270 | } | |
5add6af8 | 1271 | |
ced5c338 AE |
1272 | /* Controller radio is available but is currently powered down */ |
1273 | hdev->amp_status = 0; | |
1274 | ||
e59fda8d | 1275 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1276 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1277 | |
1da177e4 LT |
1278 | hci_req_unlock(hdev); |
1279 | ||
1280 | hci_dev_put(hdev); | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | int hci_dev_close(__u16 dev) | |
1285 | { | |
1286 | struct hci_dev *hdev; | |
1287 | int err; | |
1288 | ||
70f23020 AE |
1289 | hdev = hci_dev_get(dev); |
1290 | if (!hdev) | |
1da177e4 | 1291 | return -ENODEV; |
8ee56540 MH |
1292 | |
1293 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1294 | cancel_delayed_work(&hdev->power_off); | |
1295 | ||
1da177e4 | 1296 | err = hci_dev_do_close(hdev); |
8ee56540 | 1297 | |
1da177e4 LT |
1298 | hci_dev_put(hdev); |
1299 | return err; | |
1300 | } | |
1301 | ||
1302 | int hci_dev_reset(__u16 dev) | |
1303 | { | |
1304 | struct hci_dev *hdev; | |
1305 | int ret = 0; | |
1306 | ||
70f23020 AE |
1307 | hdev = hci_dev_get(dev); |
1308 | if (!hdev) | |
1da177e4 LT |
1309 | return -ENODEV; |
1310 | ||
1311 | hci_req_lock(hdev); | |
1da177e4 LT |
1312 | |
1313 | if (!test_bit(HCI_UP, &hdev->flags)) | |
1314 | goto done; | |
1315 | ||
1316 | /* Drop queues */ | |
1317 | skb_queue_purge(&hdev->rx_q); | |
1318 | skb_queue_purge(&hdev->cmd_q); | |
1319 | ||
09fd0de5 | 1320 | hci_dev_lock(hdev); |
1da177e4 LT |
1321 | inquiry_cache_flush(hdev); |
1322 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 1323 | hci_dev_unlock(hdev); |
1da177e4 LT |
1324 | |
1325 | if (hdev->flush) | |
1326 | hdev->flush(hdev); | |
1327 | ||
8e87d142 | 1328 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1329 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1330 | |
1331 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1332 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1333 | |
1334 | done: | |
1da177e4 LT |
1335 | hci_req_unlock(hdev); |
1336 | hci_dev_put(hdev); | |
1337 | return ret; | |
1338 | } | |
1339 | ||
1340 | int hci_dev_reset_stat(__u16 dev) | |
1341 | { | |
1342 | struct hci_dev *hdev; | |
1343 | int ret = 0; | |
1344 | ||
70f23020 AE |
1345 | hdev = hci_dev_get(dev); |
1346 | if (!hdev) | |
1da177e4 LT |
1347 | return -ENODEV; |
1348 | ||
1349 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
1350 | ||
1351 | hci_dev_put(hdev); | |
1352 | ||
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1357 | { | |
1358 | struct hci_dev *hdev; | |
1359 | struct hci_dev_req dr; | |
1360 | int err = 0; | |
1361 | ||
1362 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1363 | return -EFAULT; | |
1364 | ||
70f23020 AE |
1365 | hdev = hci_dev_get(dr.dev_id); |
1366 | if (!hdev) | |
1da177e4 LT |
1367 | return -ENODEV; |
1368 | ||
1369 | switch (cmd) { | |
1370 | case HCISETAUTH: | |
01178cd4 JH |
1371 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1372 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1373 | break; |
1374 | ||
1375 | case HCISETENCRYPT: | |
1376 | if (!lmp_encrypt_capable(hdev)) { | |
1377 | err = -EOPNOTSUPP; | |
1378 | break; | |
1379 | } | |
1380 | ||
1381 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1382 | /* Auth must be enabled first */ | |
01178cd4 JH |
1383 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1384 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1385 | if (err) |
1386 | break; | |
1387 | } | |
1388 | ||
01178cd4 JH |
1389 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1390 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1391 | break; |
1392 | ||
1393 | case HCISETSCAN: | |
01178cd4 JH |
1394 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1395 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1396 | break; |
1397 | ||
1da177e4 | 1398 | case HCISETLINKPOL: |
01178cd4 JH |
1399 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1400 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1401 | break; |
1402 | ||
1403 | case HCISETLINKMODE: | |
e4e8e37c MH |
1404 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1405 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1406 | break; | |
1407 | ||
1408 | case HCISETPTYPE: | |
1409 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1410 | break; |
1411 | ||
1412 | case HCISETACLMTU: | |
e4e8e37c MH |
1413 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1414 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1415 | break; |
1416 | ||
1417 | case HCISETSCOMTU: | |
e4e8e37c MH |
1418 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1419 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1420 | break; |
1421 | ||
1422 | default: | |
1423 | err = -EINVAL; | |
1424 | break; | |
1425 | } | |
e4e8e37c | 1426 | |
1da177e4 LT |
1427 | hci_dev_put(hdev); |
1428 | return err; | |
1429 | } | |
1430 | ||
1431 | int hci_get_dev_list(void __user *arg) | |
1432 | { | |
8035ded4 | 1433 | struct hci_dev *hdev; |
1da177e4 LT |
1434 | struct hci_dev_list_req *dl; |
1435 | struct hci_dev_req *dr; | |
1da177e4 LT |
1436 | int n = 0, size, err; |
1437 | __u16 dev_num; | |
1438 | ||
1439 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1440 | return -EFAULT; | |
1441 | ||
1442 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1443 | return -EINVAL; | |
1444 | ||
1445 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1446 | ||
70f23020 AE |
1447 | dl = kzalloc(size, GFP_KERNEL); |
1448 | if (!dl) | |
1da177e4 LT |
1449 | return -ENOMEM; |
1450 | ||
1451 | dr = dl->dev_req; | |
1452 | ||
f20d09d5 | 1453 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1454 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1455 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1456 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1457 | |
a8b2d5c2 JH |
1458 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1459 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1460 | |
1da177e4 LT |
1461 | (dr + n)->dev_id = hdev->id; |
1462 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1463 | |
1da177e4 LT |
1464 | if (++n >= dev_num) |
1465 | break; | |
1466 | } | |
f20d09d5 | 1467 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1468 | |
1469 | dl->dev_num = n; | |
1470 | size = sizeof(*dl) + n * sizeof(*dr); | |
1471 | ||
1472 | err = copy_to_user(arg, dl, size); | |
1473 | kfree(dl); | |
1474 | ||
1475 | return err ? -EFAULT : 0; | |
1476 | } | |
1477 | ||
1478 | int hci_get_dev_info(void __user *arg) | |
1479 | { | |
1480 | struct hci_dev *hdev; | |
1481 | struct hci_dev_info di; | |
1482 | int err = 0; | |
1483 | ||
1484 | if (copy_from_user(&di, arg, sizeof(di))) | |
1485 | return -EFAULT; | |
1486 | ||
70f23020 AE |
1487 | hdev = hci_dev_get(di.dev_id); |
1488 | if (!hdev) | |
1da177e4 LT |
1489 | return -ENODEV; |
1490 | ||
a8b2d5c2 | 1491 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1492 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1493 | |
a8b2d5c2 JH |
1494 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1495 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1496 | |
1da177e4 LT |
1497 | strcpy(di.name, hdev->name); |
1498 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1499 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1500 | di.flags = hdev->flags; |
1501 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1502 | if (lmp_bredr_capable(hdev)) { |
1503 | di.acl_mtu = hdev->acl_mtu; | |
1504 | di.acl_pkts = hdev->acl_pkts; | |
1505 | di.sco_mtu = hdev->sco_mtu; | |
1506 | di.sco_pkts = hdev->sco_pkts; | |
1507 | } else { | |
1508 | di.acl_mtu = hdev->le_mtu; | |
1509 | di.acl_pkts = hdev->le_pkts; | |
1510 | di.sco_mtu = 0; | |
1511 | di.sco_pkts = 0; | |
1512 | } | |
1da177e4 LT |
1513 | di.link_policy = hdev->link_policy; |
1514 | di.link_mode = hdev->link_mode; | |
1515 | ||
1516 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1517 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1518 | ||
1519 | if (copy_to_user(arg, &di, sizeof(di))) | |
1520 | err = -EFAULT; | |
1521 | ||
1522 | hci_dev_put(hdev); | |
1523 | ||
1524 | return err; | |
1525 | } | |
1526 | ||
1527 | /* ---- Interface to HCI drivers ---- */ | |
1528 | ||
611b30f7 MH |
1529 | static int hci_rfkill_set_block(void *data, bool blocked) |
1530 | { | |
1531 | struct hci_dev *hdev = data; | |
1532 | ||
1533 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1534 | ||
1535 | if (!blocked) | |
1536 | return 0; | |
1537 | ||
1538 | hci_dev_do_close(hdev); | |
1539 | ||
1540 | return 0; | |
1541 | } | |
1542 | ||
1543 | static const struct rfkill_ops hci_rfkill_ops = { | |
1544 | .set_block = hci_rfkill_set_block, | |
1545 | }; | |
1546 | ||
ab81cbf9 JH |
1547 | static void hci_power_on(struct work_struct *work) |
1548 | { | |
1549 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1550 | ||
1551 | BT_DBG("%s", hdev->name); | |
1552 | ||
1553 | if (hci_dev_open(hdev->id) < 0) | |
1554 | return; | |
1555 | ||
a8b2d5c2 | 1556 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
19202573 JH |
1557 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1558 | HCI_AUTO_OFF_TIMEOUT); | |
ab81cbf9 | 1559 | |
a8b2d5c2 | 1560 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1561 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1562 | } |
1563 | ||
1564 | static void hci_power_off(struct work_struct *work) | |
1565 | { | |
3243553f | 1566 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1567 | power_off.work); |
ab81cbf9 JH |
1568 | |
1569 | BT_DBG("%s", hdev->name); | |
1570 | ||
8ee56540 | 1571 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1572 | } |
1573 | ||
16ab91ab JH |
1574 | static void hci_discov_off(struct work_struct *work) |
1575 | { | |
1576 | struct hci_dev *hdev; | |
1577 | u8 scan = SCAN_PAGE; | |
1578 | ||
1579 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1580 | ||
1581 | BT_DBG("%s", hdev->name); | |
1582 | ||
09fd0de5 | 1583 | hci_dev_lock(hdev); |
16ab91ab JH |
1584 | |
1585 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1586 | ||
1587 | hdev->discov_timeout = 0; | |
1588 | ||
09fd0de5 | 1589 | hci_dev_unlock(hdev); |
16ab91ab JH |
1590 | } |
1591 | ||
2aeb9a1a JH |
1592 | int hci_uuids_clear(struct hci_dev *hdev) |
1593 | { | |
4821002c | 1594 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1595 | |
4821002c JH |
1596 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1597 | list_del(&uuid->list); | |
2aeb9a1a JH |
1598 | kfree(uuid); |
1599 | } | |
1600 | ||
1601 | return 0; | |
1602 | } | |
1603 | ||
55ed8ca1 JH |
1604 | int hci_link_keys_clear(struct hci_dev *hdev) |
1605 | { | |
1606 | struct list_head *p, *n; | |
1607 | ||
1608 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1609 | struct link_key *key; | |
1610 | ||
1611 | key = list_entry(p, struct link_key, list); | |
1612 | ||
1613 | list_del(p); | |
1614 | kfree(key); | |
1615 | } | |
1616 | ||
1617 | return 0; | |
1618 | } | |
1619 | ||
b899efaf VCG |
1620 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1621 | { | |
1622 | struct smp_ltk *k, *tmp; | |
1623 | ||
1624 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1625 | list_del(&k->list); | |
1626 | kfree(k); | |
1627 | } | |
1628 | ||
1629 | return 0; | |
1630 | } | |
1631 | ||
55ed8ca1 JH |
1632 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1633 | { | |
8035ded4 | 1634 | struct link_key *k; |
55ed8ca1 | 1635 | |
8035ded4 | 1636 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1637 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1638 | return k; | |
55ed8ca1 JH |
1639 | |
1640 | return NULL; | |
1641 | } | |
1642 | ||
745c0ce3 | 1643 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1644 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1645 | { |
1646 | /* Legacy key */ | |
1647 | if (key_type < 0x03) | |
745c0ce3 | 1648 | return true; |
d25e28ab JH |
1649 | |
1650 | /* Debug keys are insecure so don't store them persistently */ | |
1651 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1652 | return false; |
d25e28ab JH |
1653 | |
1654 | /* Changed combination key and there's no previous one */ | |
1655 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1656 | return false; |
d25e28ab JH |
1657 | |
1658 | /* Security mode 3 case */ | |
1659 | if (!conn) | |
745c0ce3 | 1660 | return true; |
d25e28ab JH |
1661 | |
1662 | /* Neither local nor remote side had no-bonding as requirement */ | |
1663 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1664 | return true; |
d25e28ab JH |
1665 | |
1666 | /* Local side had dedicated bonding as requirement */ | |
1667 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1668 | return true; |
d25e28ab JH |
1669 | |
1670 | /* Remote side had dedicated bonding as requirement */ | |
1671 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1672 | return true; |
d25e28ab JH |
1673 | |
1674 | /* If none of the above criteria match, then don't store the key | |
1675 | * persistently */ | |
745c0ce3 | 1676 | return false; |
d25e28ab JH |
1677 | } |
1678 | ||
c9839a11 | 1679 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1680 | { |
c9839a11 | 1681 | struct smp_ltk *k; |
75d262c2 | 1682 | |
c9839a11 VCG |
1683 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1684 | if (k->ediv != ediv || | |
a8c5fb1a | 1685 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1686 | continue; |
1687 | ||
c9839a11 | 1688 | return k; |
75d262c2 VCG |
1689 | } |
1690 | ||
1691 | return NULL; | |
1692 | } | |
75d262c2 | 1693 | |
c9839a11 | 1694 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1695 | u8 addr_type) |
75d262c2 | 1696 | { |
c9839a11 | 1697 | struct smp_ltk *k; |
75d262c2 | 1698 | |
c9839a11 VCG |
1699 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1700 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1701 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1702 | return k; |
1703 | ||
1704 | return NULL; | |
1705 | } | |
75d262c2 | 1706 | |
d25e28ab | 1707 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1708 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1709 | { |
1710 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1711 | u8 old_key_type; |
1712 | bool persistent; | |
55ed8ca1 JH |
1713 | |
1714 | old_key = hci_find_link_key(hdev, bdaddr); | |
1715 | if (old_key) { | |
1716 | old_key_type = old_key->type; | |
1717 | key = old_key; | |
1718 | } else { | |
12adcf3a | 1719 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1720 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1721 | if (!key) | |
1722 | return -ENOMEM; | |
1723 | list_add(&key->list, &hdev->link_keys); | |
1724 | } | |
1725 | ||
6ed93dc6 | 1726 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1727 | |
d25e28ab JH |
1728 | /* Some buggy controller combinations generate a changed |
1729 | * combination key for legacy pairing even when there's no | |
1730 | * previous key */ | |
1731 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1732 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1733 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1734 | if (conn) |
1735 | conn->key_type = type; | |
1736 | } | |
d25e28ab | 1737 | |
55ed8ca1 | 1738 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1739 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1740 | key->pin_len = pin_len; |
1741 | ||
b6020ba0 | 1742 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1743 | key->type = old_key_type; |
4748fed2 JH |
1744 | else |
1745 | key->type = type; | |
1746 | ||
4df378a1 JH |
1747 | if (!new_key) |
1748 | return 0; | |
1749 | ||
1750 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1751 | ||
744cf19e | 1752 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1753 | |
6ec5bcad VA |
1754 | if (conn) |
1755 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1756 | |
1757 | return 0; | |
1758 | } | |
1759 | ||
c9839a11 | 1760 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1761 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1762 | ediv, u8 rand[8]) |
75d262c2 | 1763 | { |
c9839a11 | 1764 | struct smp_ltk *key, *old_key; |
75d262c2 | 1765 | |
c9839a11 VCG |
1766 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1767 | return 0; | |
75d262c2 | 1768 | |
c9839a11 VCG |
1769 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1770 | if (old_key) | |
75d262c2 | 1771 | key = old_key; |
c9839a11 VCG |
1772 | else { |
1773 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1774 | if (!key) |
1775 | return -ENOMEM; | |
c9839a11 | 1776 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1777 | } |
1778 | ||
75d262c2 | 1779 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1780 | key->bdaddr_type = addr_type; |
1781 | memcpy(key->val, tk, sizeof(key->val)); | |
1782 | key->authenticated = authenticated; | |
1783 | key->ediv = ediv; | |
1784 | key->enc_size = enc_size; | |
1785 | key->type = type; | |
1786 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1787 | |
c9839a11 VCG |
1788 | if (!new_key) |
1789 | return 0; | |
75d262c2 | 1790 | |
261cc5aa VCG |
1791 | if (type & HCI_SMP_LTK) |
1792 | mgmt_new_ltk(hdev, key, 1); | |
1793 | ||
75d262c2 VCG |
1794 | return 0; |
1795 | } | |
1796 | ||
55ed8ca1 JH |
1797 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1798 | { | |
1799 | struct link_key *key; | |
1800 | ||
1801 | key = hci_find_link_key(hdev, bdaddr); | |
1802 | if (!key) | |
1803 | return -ENOENT; | |
1804 | ||
6ed93dc6 | 1805 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
1806 | |
1807 | list_del(&key->list); | |
1808 | kfree(key); | |
1809 | ||
1810 | return 0; | |
1811 | } | |
1812 | ||
b899efaf VCG |
1813 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1814 | { | |
1815 | struct smp_ltk *k, *tmp; | |
1816 | ||
1817 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1818 | if (bacmp(bdaddr, &k->bdaddr)) | |
1819 | continue; | |
1820 | ||
6ed93dc6 | 1821 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
1822 | |
1823 | list_del(&k->list); | |
1824 | kfree(k); | |
1825 | } | |
1826 | ||
1827 | return 0; | |
1828 | } | |
1829 | ||
6bd32326 | 1830 | /* HCI command timer function */ |
bda4f23a | 1831 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1832 | { |
1833 | struct hci_dev *hdev = (void *) arg; | |
1834 | ||
bda4f23a AE |
1835 | if (hdev->sent_cmd) { |
1836 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1837 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1838 | ||
1839 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1840 | } else { | |
1841 | BT_ERR("%s command tx timeout", hdev->name); | |
1842 | } | |
1843 | ||
6bd32326 | 1844 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1845 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1846 | } |
1847 | ||
2763eda6 | 1848 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1849 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1850 | { |
1851 | struct oob_data *data; | |
1852 | ||
1853 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1854 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1855 | return data; | |
1856 | ||
1857 | return NULL; | |
1858 | } | |
1859 | ||
1860 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1861 | { | |
1862 | struct oob_data *data; | |
1863 | ||
1864 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1865 | if (!data) | |
1866 | return -ENOENT; | |
1867 | ||
6ed93dc6 | 1868 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1869 | |
1870 | list_del(&data->list); | |
1871 | kfree(data); | |
1872 | ||
1873 | return 0; | |
1874 | } | |
1875 | ||
1876 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1877 | { | |
1878 | struct oob_data *data, *n; | |
1879 | ||
1880 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1881 | list_del(&data->list); | |
1882 | kfree(data); | |
1883 | } | |
1884 | ||
1885 | return 0; | |
1886 | } | |
1887 | ||
1888 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1889 | u8 *randomizer) |
2763eda6 SJ |
1890 | { |
1891 | struct oob_data *data; | |
1892 | ||
1893 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1894 | ||
1895 | if (!data) { | |
1896 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1897 | if (!data) | |
1898 | return -ENOMEM; | |
1899 | ||
1900 | bacpy(&data->bdaddr, bdaddr); | |
1901 | list_add(&data->list, &hdev->remote_oob_data); | |
1902 | } | |
1903 | ||
1904 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1905 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1906 | ||
6ed93dc6 | 1907 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1908 | |
1909 | return 0; | |
1910 | } | |
1911 | ||
04124681 | 1912 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1913 | { |
8035ded4 | 1914 | struct bdaddr_list *b; |
b2a66aad | 1915 | |
8035ded4 | 1916 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1917 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1918 | return b; | |
b2a66aad AJ |
1919 | |
1920 | return NULL; | |
1921 | } | |
1922 | ||
1923 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1924 | { | |
1925 | struct list_head *p, *n; | |
1926 | ||
1927 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1928 | struct bdaddr_list *b; | |
1929 | ||
1930 | b = list_entry(p, struct bdaddr_list, list); | |
1931 | ||
1932 | list_del(p); | |
1933 | kfree(b); | |
1934 | } | |
1935 | ||
1936 | return 0; | |
1937 | } | |
1938 | ||
88c1fe4b | 1939 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1940 | { |
1941 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1942 | |
1943 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1944 | return -EBADF; | |
1945 | ||
5e762444 AJ |
1946 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1947 | return -EEXIST; | |
b2a66aad AJ |
1948 | |
1949 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1950 | if (!entry) |
1951 | return -ENOMEM; | |
b2a66aad AJ |
1952 | |
1953 | bacpy(&entry->bdaddr, bdaddr); | |
1954 | ||
1955 | list_add(&entry->list, &hdev->blacklist); | |
1956 | ||
88c1fe4b | 1957 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1958 | } |
1959 | ||
88c1fe4b | 1960 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1961 | { |
1962 | struct bdaddr_list *entry; | |
b2a66aad | 1963 | |
1ec918ce | 1964 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1965 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1966 | |
1967 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1968 | if (!entry) |
5e762444 | 1969 | return -ENOENT; |
b2a66aad AJ |
1970 | |
1971 | list_del(&entry->list); | |
1972 | kfree(entry); | |
1973 | ||
88c1fe4b | 1974 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1975 | } |
1976 | ||
42c6b129 | 1977 | static void le_scan_param_req(struct hci_request *req, unsigned long opt) |
7ba8b4be AG |
1978 | { |
1979 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1980 | struct hci_cp_le_set_scan_param cp; | |
1981 | ||
1982 | memset(&cp, 0, sizeof(cp)); | |
1983 | cp.type = param->type; | |
1984 | cp.interval = cpu_to_le16(param->interval); | |
1985 | cp.window = cpu_to_le16(param->window); | |
1986 | ||
42c6b129 | 1987 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); |
7ba8b4be AG |
1988 | } |
1989 | ||
42c6b129 | 1990 | static void le_scan_enable_req(struct hci_request *req, unsigned long opt) |
7ba8b4be AG |
1991 | { |
1992 | struct hci_cp_le_set_scan_enable cp; | |
1993 | ||
1994 | memset(&cp, 0, sizeof(cp)); | |
1995 | cp.enable = 1; | |
0431a43c | 1996 | cp.filter_dup = 1; |
7ba8b4be | 1997 | |
42c6b129 | 1998 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
7ba8b4be AG |
1999 | } |
2000 | ||
2001 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 2002 | u16 window, int timeout) |
7ba8b4be AG |
2003 | { |
2004 | long timeo = msecs_to_jiffies(3000); | |
2005 | struct le_scan_params param; | |
2006 | int err; | |
2007 | ||
2008 | BT_DBG("%s", hdev->name); | |
2009 | ||
2010 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
2011 | return -EINPROGRESS; | |
2012 | ||
2013 | param.type = type; | |
2014 | param.interval = interval; | |
2015 | param.window = window; | |
2016 | ||
2017 | hci_req_lock(hdev); | |
2018 | ||
01178cd4 JH |
2019 | err = __hci_req_sync(hdev, le_scan_param_req, (unsigned long) ¶m, |
2020 | timeo); | |
7ba8b4be | 2021 | if (!err) |
01178cd4 | 2022 | err = __hci_req_sync(hdev, le_scan_enable_req, 0, timeo); |
7ba8b4be AG |
2023 | |
2024 | hci_req_unlock(hdev); | |
2025 | ||
2026 | if (err < 0) | |
2027 | return err; | |
2028 | ||
46818ed5 JH |
2029 | queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable, |
2030 | msecs_to_jiffies(timeout)); | |
7ba8b4be AG |
2031 | |
2032 | return 0; | |
2033 | } | |
2034 | ||
7dbfac1d AG |
2035 | int hci_cancel_le_scan(struct hci_dev *hdev) |
2036 | { | |
2037 | BT_DBG("%s", hdev->name); | |
2038 | ||
2039 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
2040 | return -EALREADY; | |
2041 | ||
2042 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
2043 | struct hci_cp_le_set_scan_enable cp; | |
2044 | ||
2045 | /* Send HCI command to disable LE Scan */ | |
2046 | memset(&cp, 0, sizeof(cp)); | |
2047 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2048 | } | |
2049 | ||
2050 | return 0; | |
2051 | } | |
2052 | ||
7ba8b4be AG |
2053 | static void le_scan_disable_work(struct work_struct *work) |
2054 | { | |
2055 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2056 | le_scan_disable.work); |
7ba8b4be AG |
2057 | struct hci_cp_le_set_scan_enable cp; |
2058 | ||
2059 | BT_DBG("%s", hdev->name); | |
2060 | ||
2061 | memset(&cp, 0, sizeof(cp)); | |
2062 | ||
2063 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
2064 | } | |
2065 | ||
28b75a89 AG |
2066 | static void le_scan_work(struct work_struct *work) |
2067 | { | |
2068 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
2069 | struct le_scan_params *param = &hdev->le_scan_params; | |
2070 | ||
2071 | BT_DBG("%s", hdev->name); | |
2072 | ||
04124681 GP |
2073 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
2074 | param->timeout); | |
28b75a89 AG |
2075 | } |
2076 | ||
2077 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 2078 | int timeout) |
28b75a89 AG |
2079 | { |
2080 | struct le_scan_params *param = &hdev->le_scan_params; | |
2081 | ||
2082 | BT_DBG("%s", hdev->name); | |
2083 | ||
f1550478 JH |
2084 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) |
2085 | return -ENOTSUPP; | |
2086 | ||
28b75a89 AG |
2087 | if (work_busy(&hdev->le_scan)) |
2088 | return -EINPROGRESS; | |
2089 | ||
2090 | param->type = type; | |
2091 | param->interval = interval; | |
2092 | param->window = window; | |
2093 | param->timeout = timeout; | |
2094 | ||
2095 | queue_work(system_long_wq, &hdev->le_scan); | |
2096 | ||
2097 | return 0; | |
2098 | } | |
2099 | ||
9be0dab7 DH |
2100 | /* Alloc HCI device */ |
2101 | struct hci_dev *hci_alloc_dev(void) | |
2102 | { | |
2103 | struct hci_dev *hdev; | |
2104 | ||
2105 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2106 | if (!hdev) | |
2107 | return NULL; | |
2108 | ||
b1b813d4 DH |
2109 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2110 | hdev->esco_type = (ESCO_HV1); | |
2111 | hdev->link_mode = (HCI_LM_ACCEPT); | |
2112 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2113 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2114 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2115 | |
b1b813d4 DH |
2116 | hdev->sniff_max_interval = 800; |
2117 | hdev->sniff_min_interval = 80; | |
2118 | ||
2119 | mutex_init(&hdev->lock); | |
2120 | mutex_init(&hdev->req_lock); | |
2121 | ||
2122 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2123 | INIT_LIST_HEAD(&hdev->blacklist); | |
2124 | INIT_LIST_HEAD(&hdev->uuids); | |
2125 | INIT_LIST_HEAD(&hdev->link_keys); | |
2126 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2127 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2128 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2129 | |
2130 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2131 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2132 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2133 | INIT_WORK(&hdev->power_on, hci_power_on); | |
2134 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
2135 | ||
b1b813d4 DH |
2136 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2137 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2138 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2139 | ||
9be0dab7 | 2140 | skb_queue_head_init(&hdev->driver_init); |
b1b813d4 DH |
2141 | skb_queue_head_init(&hdev->rx_q); |
2142 | skb_queue_head_init(&hdev->cmd_q); | |
2143 | skb_queue_head_init(&hdev->raw_q); | |
2144 | ||
2145 | init_waitqueue_head(&hdev->req_wait_q); | |
2146 | ||
bda4f23a | 2147 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2148 | |
b1b813d4 DH |
2149 | hci_init_sysfs(hdev); |
2150 | discovery_init(hdev); | |
9be0dab7 DH |
2151 | |
2152 | return hdev; | |
2153 | } | |
2154 | EXPORT_SYMBOL(hci_alloc_dev); | |
2155 | ||
2156 | /* Free HCI device */ | |
2157 | void hci_free_dev(struct hci_dev *hdev) | |
2158 | { | |
2159 | skb_queue_purge(&hdev->driver_init); | |
2160 | ||
2161 | /* will free via device release */ | |
2162 | put_device(&hdev->dev); | |
2163 | } | |
2164 | EXPORT_SYMBOL(hci_free_dev); | |
2165 | ||
1da177e4 LT |
2166 | /* Register HCI device */ |
2167 | int hci_register_dev(struct hci_dev *hdev) | |
2168 | { | |
b1b813d4 | 2169 | int id, error; |
1da177e4 | 2170 | |
010666a1 | 2171 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2172 | return -EINVAL; |
2173 | ||
08add513 MM |
2174 | /* Do not allow HCI_AMP devices to register at index 0, |
2175 | * so the index can be used as the AMP controller ID. | |
2176 | */ | |
3df92b31 SL |
2177 | switch (hdev->dev_type) { |
2178 | case HCI_BREDR: | |
2179 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2180 | break; | |
2181 | case HCI_AMP: | |
2182 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2183 | break; | |
2184 | default: | |
2185 | return -EINVAL; | |
1da177e4 | 2186 | } |
8e87d142 | 2187 | |
3df92b31 SL |
2188 | if (id < 0) |
2189 | return id; | |
2190 | ||
1da177e4 LT |
2191 | sprintf(hdev->name, "hci%d", id); |
2192 | hdev->id = id; | |
2d8b3a11 AE |
2193 | |
2194 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2195 | ||
3df92b31 SL |
2196 | write_lock(&hci_dev_list_lock); |
2197 | list_add(&hdev->list, &hci_dev_list); | |
f20d09d5 | 2198 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 2199 | |
32845eb1 | 2200 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 2201 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
2202 | if (!hdev->workqueue) { |
2203 | error = -ENOMEM; | |
2204 | goto err; | |
2205 | } | |
f48fd9c8 | 2206 | |
6ead1bbc JH |
2207 | hdev->req_workqueue = alloc_workqueue(hdev->name, |
2208 | WQ_HIGHPRI | WQ_UNBOUND | | |
2209 | WQ_MEM_RECLAIM, 1); | |
2210 | if (!hdev->req_workqueue) { | |
2211 | destroy_workqueue(hdev->workqueue); | |
2212 | error = -ENOMEM; | |
2213 | goto err; | |
2214 | } | |
2215 | ||
33ca954d DH |
2216 | error = hci_add_sysfs(hdev); |
2217 | if (error < 0) | |
2218 | goto err_wqueue; | |
1da177e4 | 2219 | |
611b30f7 | 2220 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2221 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2222 | hdev); | |
611b30f7 MH |
2223 | if (hdev->rfkill) { |
2224 | if (rfkill_register(hdev->rfkill) < 0) { | |
2225 | rfkill_destroy(hdev->rfkill); | |
2226 | hdev->rfkill = NULL; | |
2227 | } | |
2228 | } | |
2229 | ||
a8b2d5c2 | 2230 | set_bit(HCI_SETUP, &hdev->dev_flags); |
ce2be9ac AE |
2231 | |
2232 | if (hdev->dev_type != HCI_AMP) | |
2233 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); | |
2234 | ||
1da177e4 | 2235 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2236 | hci_dev_hold(hdev); |
1da177e4 | 2237 | |
19202573 | 2238 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2239 | |
1da177e4 | 2240 | return id; |
f48fd9c8 | 2241 | |
33ca954d DH |
2242 | err_wqueue: |
2243 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2244 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2245 | err: |
3df92b31 | 2246 | ida_simple_remove(&hci_index_ida, hdev->id); |
f20d09d5 | 2247 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 2248 | list_del(&hdev->list); |
f20d09d5 | 2249 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 2250 | |
33ca954d | 2251 | return error; |
1da177e4 LT |
2252 | } |
2253 | EXPORT_SYMBOL(hci_register_dev); | |
2254 | ||
2255 | /* Unregister HCI device */ | |
59735631 | 2256 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2257 | { |
3df92b31 | 2258 | int i, id; |
ef222013 | 2259 | |
c13854ce | 2260 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2261 | |
94324962 JH |
2262 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2263 | ||
3df92b31 SL |
2264 | id = hdev->id; |
2265 | ||
f20d09d5 | 2266 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2267 | list_del(&hdev->list); |
f20d09d5 | 2268 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2269 | |
2270 | hci_dev_do_close(hdev); | |
2271 | ||
cd4c5391 | 2272 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2273 | kfree_skb(hdev->reassembly[i]); |
2274 | ||
b9b5ef18 GP |
2275 | cancel_work_sync(&hdev->power_on); |
2276 | ||
ab81cbf9 | 2277 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2278 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2279 | hci_dev_lock(hdev); |
744cf19e | 2280 | mgmt_index_removed(hdev); |
09fd0de5 | 2281 | hci_dev_unlock(hdev); |
56e5cb86 | 2282 | } |
ab81cbf9 | 2283 | |
2e58ef3e JH |
2284 | /* mgmt_index_removed should take care of emptying the |
2285 | * pending list */ | |
2286 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2287 | ||
1da177e4 LT |
2288 | hci_notify(hdev, HCI_DEV_UNREG); |
2289 | ||
611b30f7 MH |
2290 | if (hdev->rfkill) { |
2291 | rfkill_unregister(hdev->rfkill); | |
2292 | rfkill_destroy(hdev->rfkill); | |
2293 | } | |
2294 | ||
ce242970 | 2295 | hci_del_sysfs(hdev); |
147e2d59 | 2296 | |
f48fd9c8 | 2297 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2298 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2299 | |
09fd0de5 | 2300 | hci_dev_lock(hdev); |
e2e0cacb | 2301 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2302 | hci_uuids_clear(hdev); |
55ed8ca1 | 2303 | hci_link_keys_clear(hdev); |
b899efaf | 2304 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2305 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2306 | hci_dev_unlock(hdev); |
e2e0cacb | 2307 | |
dc946bd8 | 2308 | hci_dev_put(hdev); |
3df92b31 SL |
2309 | |
2310 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2311 | } |
2312 | EXPORT_SYMBOL(hci_unregister_dev); | |
2313 | ||
2314 | /* Suspend HCI device */ | |
2315 | int hci_suspend_dev(struct hci_dev *hdev) | |
2316 | { | |
2317 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2318 | return 0; | |
2319 | } | |
2320 | EXPORT_SYMBOL(hci_suspend_dev); | |
2321 | ||
2322 | /* Resume HCI device */ | |
2323 | int hci_resume_dev(struct hci_dev *hdev) | |
2324 | { | |
2325 | hci_notify(hdev, HCI_DEV_RESUME); | |
2326 | return 0; | |
2327 | } | |
2328 | EXPORT_SYMBOL(hci_resume_dev); | |
2329 | ||
76bca880 MH |
2330 | /* Receive frame from HCI drivers */ |
2331 | int hci_recv_frame(struct sk_buff *skb) | |
2332 | { | |
2333 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2334 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 2335 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2336 | kfree_skb(skb); |
2337 | return -ENXIO; | |
2338 | } | |
2339 | ||
d82603c6 | 2340 | /* Incoming skb */ |
76bca880 MH |
2341 | bt_cb(skb)->incoming = 1; |
2342 | ||
2343 | /* Time stamp */ | |
2344 | __net_timestamp(skb); | |
2345 | ||
76bca880 | 2346 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2347 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2348 | |
76bca880 MH |
2349 | return 0; |
2350 | } | |
2351 | EXPORT_SYMBOL(hci_recv_frame); | |
2352 | ||
33e882a5 | 2353 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2354 | int count, __u8 index) |
33e882a5 SS |
2355 | { |
2356 | int len = 0; | |
2357 | int hlen = 0; | |
2358 | int remain = count; | |
2359 | struct sk_buff *skb; | |
2360 | struct bt_skb_cb *scb; | |
2361 | ||
2362 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2363 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2364 | return -EILSEQ; |
2365 | ||
2366 | skb = hdev->reassembly[index]; | |
2367 | ||
2368 | if (!skb) { | |
2369 | switch (type) { | |
2370 | case HCI_ACLDATA_PKT: | |
2371 | len = HCI_MAX_FRAME_SIZE; | |
2372 | hlen = HCI_ACL_HDR_SIZE; | |
2373 | break; | |
2374 | case HCI_EVENT_PKT: | |
2375 | len = HCI_MAX_EVENT_SIZE; | |
2376 | hlen = HCI_EVENT_HDR_SIZE; | |
2377 | break; | |
2378 | case HCI_SCODATA_PKT: | |
2379 | len = HCI_MAX_SCO_SIZE; | |
2380 | hlen = HCI_SCO_HDR_SIZE; | |
2381 | break; | |
2382 | } | |
2383 | ||
1e429f38 | 2384 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2385 | if (!skb) |
2386 | return -ENOMEM; | |
2387 | ||
2388 | scb = (void *) skb->cb; | |
2389 | scb->expect = hlen; | |
2390 | scb->pkt_type = type; | |
2391 | ||
2392 | skb->dev = (void *) hdev; | |
2393 | hdev->reassembly[index] = skb; | |
2394 | } | |
2395 | ||
2396 | while (count) { | |
2397 | scb = (void *) skb->cb; | |
89bb46d0 | 2398 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2399 | |
2400 | memcpy(skb_put(skb, len), data, len); | |
2401 | ||
2402 | count -= len; | |
2403 | data += len; | |
2404 | scb->expect -= len; | |
2405 | remain = count; | |
2406 | ||
2407 | switch (type) { | |
2408 | case HCI_EVENT_PKT: | |
2409 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2410 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2411 | scb->expect = h->plen; | |
2412 | ||
2413 | if (skb_tailroom(skb) < scb->expect) { | |
2414 | kfree_skb(skb); | |
2415 | hdev->reassembly[index] = NULL; | |
2416 | return -ENOMEM; | |
2417 | } | |
2418 | } | |
2419 | break; | |
2420 | ||
2421 | case HCI_ACLDATA_PKT: | |
2422 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2423 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2424 | scb->expect = __le16_to_cpu(h->dlen); | |
2425 | ||
2426 | if (skb_tailroom(skb) < scb->expect) { | |
2427 | kfree_skb(skb); | |
2428 | hdev->reassembly[index] = NULL; | |
2429 | return -ENOMEM; | |
2430 | } | |
2431 | } | |
2432 | break; | |
2433 | ||
2434 | case HCI_SCODATA_PKT: | |
2435 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2436 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2437 | scb->expect = h->dlen; | |
2438 | ||
2439 | if (skb_tailroom(skb) < scb->expect) { | |
2440 | kfree_skb(skb); | |
2441 | hdev->reassembly[index] = NULL; | |
2442 | return -ENOMEM; | |
2443 | } | |
2444 | } | |
2445 | break; | |
2446 | } | |
2447 | ||
2448 | if (scb->expect == 0) { | |
2449 | /* Complete frame */ | |
2450 | ||
2451 | bt_cb(skb)->pkt_type = type; | |
2452 | hci_recv_frame(skb); | |
2453 | ||
2454 | hdev->reassembly[index] = NULL; | |
2455 | return remain; | |
2456 | } | |
2457 | } | |
2458 | ||
2459 | return remain; | |
2460 | } | |
2461 | ||
ef222013 MH |
2462 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2463 | { | |
f39a3c06 SS |
2464 | int rem = 0; |
2465 | ||
ef222013 MH |
2466 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2467 | return -EILSEQ; | |
2468 | ||
da5f6c37 | 2469 | while (count) { |
1e429f38 | 2470 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2471 | if (rem < 0) |
2472 | return rem; | |
ef222013 | 2473 | |
f39a3c06 SS |
2474 | data += (count - rem); |
2475 | count = rem; | |
f81c6224 | 2476 | } |
ef222013 | 2477 | |
f39a3c06 | 2478 | return rem; |
ef222013 MH |
2479 | } |
2480 | EXPORT_SYMBOL(hci_recv_fragment); | |
2481 | ||
99811510 SS |
2482 | #define STREAM_REASSEMBLY 0 |
2483 | ||
2484 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2485 | { | |
2486 | int type; | |
2487 | int rem = 0; | |
2488 | ||
da5f6c37 | 2489 | while (count) { |
99811510 SS |
2490 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2491 | ||
2492 | if (!skb) { | |
2493 | struct { char type; } *pkt; | |
2494 | ||
2495 | /* Start of the frame */ | |
2496 | pkt = data; | |
2497 | type = pkt->type; | |
2498 | ||
2499 | data++; | |
2500 | count--; | |
2501 | } else | |
2502 | type = bt_cb(skb)->pkt_type; | |
2503 | ||
1e429f38 | 2504 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2505 | STREAM_REASSEMBLY); |
99811510 SS |
2506 | if (rem < 0) |
2507 | return rem; | |
2508 | ||
2509 | data += (count - rem); | |
2510 | count = rem; | |
f81c6224 | 2511 | } |
99811510 SS |
2512 | |
2513 | return rem; | |
2514 | } | |
2515 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2516 | ||
1da177e4 LT |
2517 | /* ---- Interface to upper protocols ---- */ |
2518 | ||
1da177e4 LT |
2519 | int hci_register_cb(struct hci_cb *cb) |
2520 | { | |
2521 | BT_DBG("%p name %s", cb, cb->name); | |
2522 | ||
f20d09d5 | 2523 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2524 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2525 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2526 | |
2527 | return 0; | |
2528 | } | |
2529 | EXPORT_SYMBOL(hci_register_cb); | |
2530 | ||
2531 | int hci_unregister_cb(struct hci_cb *cb) | |
2532 | { | |
2533 | BT_DBG("%p name %s", cb, cb->name); | |
2534 | ||
f20d09d5 | 2535 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2536 | list_del(&cb->list); |
f20d09d5 | 2537 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2538 | |
2539 | return 0; | |
2540 | } | |
2541 | EXPORT_SYMBOL(hci_unregister_cb); | |
2542 | ||
2543 | static int hci_send_frame(struct sk_buff *skb) | |
2544 | { | |
2545 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2546 | ||
2547 | if (!hdev) { | |
2548 | kfree_skb(skb); | |
2549 | return -ENODEV; | |
2550 | } | |
2551 | ||
0d48d939 | 2552 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2553 | |
cd82e61c MH |
2554 | /* Time stamp */ |
2555 | __net_timestamp(skb); | |
1da177e4 | 2556 | |
cd82e61c MH |
2557 | /* Send copy to monitor */ |
2558 | hci_send_to_monitor(hdev, skb); | |
2559 | ||
2560 | if (atomic_read(&hdev->promisc)) { | |
2561 | /* Send copy to the sockets */ | |
470fe1b5 | 2562 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2563 | } |
2564 | ||
2565 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2566 | skb_orphan(skb); | |
2567 | ||
2568 | return hdev->send(skb); | |
2569 | } | |
2570 | ||
3119ae95 JH |
2571 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2572 | { | |
2573 | skb_queue_head_init(&req->cmd_q); | |
2574 | req->hdev = hdev; | |
5d73e034 | 2575 | req->err = 0; |
3119ae95 JH |
2576 | } |
2577 | ||
2578 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2579 | { | |
2580 | struct hci_dev *hdev = req->hdev; | |
2581 | struct sk_buff *skb; | |
2582 | unsigned long flags; | |
2583 | ||
2584 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2585 | ||
5d73e034 AG |
2586 | /* If an error occured during request building, remove all HCI |
2587 | * commands queued on the HCI request queue. | |
2588 | */ | |
2589 | if (req->err) { | |
2590 | skb_queue_purge(&req->cmd_q); | |
2591 | return req->err; | |
2592 | } | |
2593 | ||
3119ae95 JH |
2594 | /* Do not allow empty requests */ |
2595 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2596 | return -ENODATA; |
3119ae95 JH |
2597 | |
2598 | skb = skb_peek_tail(&req->cmd_q); | |
2599 | bt_cb(skb)->req.complete = complete; | |
2600 | ||
2601 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2602 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2603 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2604 | ||
2605 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2606 | ||
2607 | return 0; | |
2608 | } | |
2609 | ||
1ca3a9d0 JH |
2610 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
2611 | u32 plen, void *param) | |
1da177e4 LT |
2612 | { |
2613 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2614 | struct hci_command_hdr *hdr; | |
2615 | struct sk_buff *skb; | |
2616 | ||
1da177e4 | 2617 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2618 | if (!skb) |
2619 | return NULL; | |
1da177e4 LT |
2620 | |
2621 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2622 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2623 | hdr->plen = plen; |
2624 | ||
2625 | if (plen) | |
2626 | memcpy(skb_put(skb, plen), param, plen); | |
2627 | ||
2628 | BT_DBG("skb len %d", skb->len); | |
2629 | ||
0d48d939 | 2630 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2631 | skb->dev = (void *) hdev; |
c78ae283 | 2632 | |
1ca3a9d0 JH |
2633 | return skb; |
2634 | } | |
2635 | ||
2636 | /* Send HCI command */ | |
2637 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) | |
2638 | { | |
2639 | struct sk_buff *skb; | |
2640 | ||
2641 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2642 | ||
2643 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2644 | if (!skb) { | |
2645 | BT_ERR("%s no memory for command", hdev->name); | |
2646 | return -ENOMEM; | |
2647 | } | |
2648 | ||
11714b3d JH |
2649 | /* Stand-alone HCI commands must be flaged as |
2650 | * single-command requests. | |
2651 | */ | |
2652 | bt_cb(skb)->req.start = true; | |
2653 | ||
1da177e4 | 2654 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2655 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2656 | |
2657 | return 0; | |
2658 | } | |
1da177e4 | 2659 | |
71c76a17 | 2660 | /* Queue a command to an asynchronous HCI request */ |
02350a72 JH |
2661 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, void *param, |
2662 | u8 event) | |
71c76a17 JH |
2663 | { |
2664 | struct hci_dev *hdev = req->hdev; | |
2665 | struct sk_buff *skb; | |
2666 | ||
2667 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2668 | ||
34739c1e AG |
2669 | /* If an error occured during request building, there is no point in |
2670 | * queueing the HCI command. We can simply return. | |
2671 | */ | |
2672 | if (req->err) | |
2673 | return; | |
2674 | ||
71c76a17 JH |
2675 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2676 | if (!skb) { | |
5d73e034 AG |
2677 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2678 | hdev->name, opcode); | |
2679 | req->err = -ENOMEM; | |
e348fe6b | 2680 | return; |
71c76a17 JH |
2681 | } |
2682 | ||
2683 | if (skb_queue_empty(&req->cmd_q)) | |
2684 | bt_cb(skb)->req.start = true; | |
2685 | ||
02350a72 JH |
2686 | bt_cb(skb)->req.event = event; |
2687 | ||
71c76a17 | 2688 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2689 | } |
2690 | ||
02350a72 JH |
2691 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param) |
2692 | { | |
2693 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2694 | } | |
2695 | ||
1da177e4 | 2696 | /* Get data from the previously sent command */ |
a9de9248 | 2697 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2698 | { |
2699 | struct hci_command_hdr *hdr; | |
2700 | ||
2701 | if (!hdev->sent_cmd) | |
2702 | return NULL; | |
2703 | ||
2704 | hdr = (void *) hdev->sent_cmd->data; | |
2705 | ||
a9de9248 | 2706 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2707 | return NULL; |
2708 | ||
f0e09510 | 2709 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2710 | |
2711 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2712 | } | |
2713 | ||
2714 | /* Send ACL data */ | |
2715 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2716 | { | |
2717 | struct hci_acl_hdr *hdr; | |
2718 | int len = skb->len; | |
2719 | ||
badff6d0 ACM |
2720 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2721 | skb_reset_transport_header(skb); | |
9c70220b | 2722 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2723 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2724 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2725 | } |
2726 | ||
ee22be7e | 2727 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2728 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2729 | { |
ee22be7e | 2730 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2731 | struct hci_dev *hdev = conn->hdev; |
2732 | struct sk_buff *list; | |
2733 | ||
087bfd99 GP |
2734 | skb->len = skb_headlen(skb); |
2735 | skb->data_len = 0; | |
2736 | ||
2737 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2738 | |
2739 | switch (hdev->dev_type) { | |
2740 | case HCI_BREDR: | |
2741 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2742 | break; | |
2743 | case HCI_AMP: | |
2744 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2745 | break; | |
2746 | default: | |
2747 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2748 | return; | |
2749 | } | |
087bfd99 | 2750 | |
70f23020 AE |
2751 | list = skb_shinfo(skb)->frag_list; |
2752 | if (!list) { | |
1da177e4 LT |
2753 | /* Non fragmented */ |
2754 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2755 | ||
73d80deb | 2756 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2757 | } else { |
2758 | /* Fragmented */ | |
2759 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2760 | ||
2761 | skb_shinfo(skb)->frag_list = NULL; | |
2762 | ||
2763 | /* Queue all fragments atomically */ | |
af3e6359 | 2764 | spin_lock(&queue->lock); |
1da177e4 | 2765 | |
73d80deb | 2766 | __skb_queue_tail(queue, skb); |
e702112f AE |
2767 | |
2768 | flags &= ~ACL_START; | |
2769 | flags |= ACL_CONT; | |
1da177e4 LT |
2770 | do { |
2771 | skb = list; list = list->next; | |
8e87d142 | 2772 | |
1da177e4 | 2773 | skb->dev = (void *) hdev; |
0d48d939 | 2774 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2775 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2776 | |
2777 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2778 | ||
73d80deb | 2779 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2780 | } while (list); |
2781 | ||
af3e6359 | 2782 | spin_unlock(&queue->lock); |
1da177e4 | 2783 | } |
73d80deb LAD |
2784 | } |
2785 | ||
2786 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2787 | { | |
ee22be7e | 2788 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2789 | |
f0e09510 | 2790 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb LAD |
2791 | |
2792 | skb->dev = (void *) hdev; | |
73d80deb | 2793 | |
ee22be7e | 2794 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2795 | |
3eff45ea | 2796 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2797 | } |
1da177e4 LT |
2798 | |
2799 | /* Send SCO data */ | |
0d861d8b | 2800 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2801 | { |
2802 | struct hci_dev *hdev = conn->hdev; | |
2803 | struct hci_sco_hdr hdr; | |
2804 | ||
2805 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2806 | ||
aca3192c | 2807 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2808 | hdr.dlen = skb->len; |
2809 | ||
badff6d0 ACM |
2810 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2811 | skb_reset_transport_header(skb); | |
9c70220b | 2812 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2813 | |
2814 | skb->dev = (void *) hdev; | |
0d48d939 | 2815 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2816 | |
1da177e4 | 2817 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2818 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2819 | } |
1da177e4 LT |
2820 | |
2821 | /* ---- HCI TX task (outgoing data) ---- */ | |
2822 | ||
2823 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2824 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2825 | int *quote) | |
1da177e4 LT |
2826 | { |
2827 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2828 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2829 | unsigned int num = 0, min = ~0; |
1da177e4 | 2830 | |
8e87d142 | 2831 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2832 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2833 | |
2834 | rcu_read_lock(); | |
2835 | ||
2836 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2837 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2838 | continue; |
769be974 MH |
2839 | |
2840 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2841 | continue; | |
2842 | ||
1da177e4 LT |
2843 | num++; |
2844 | ||
2845 | if (c->sent < min) { | |
2846 | min = c->sent; | |
2847 | conn = c; | |
2848 | } | |
52087a79 LAD |
2849 | |
2850 | if (hci_conn_num(hdev, type) == num) | |
2851 | break; | |
1da177e4 LT |
2852 | } |
2853 | ||
bf4c6325 GP |
2854 | rcu_read_unlock(); |
2855 | ||
1da177e4 | 2856 | if (conn) { |
6ed58ec5 VT |
2857 | int cnt, q; |
2858 | ||
2859 | switch (conn->type) { | |
2860 | case ACL_LINK: | |
2861 | cnt = hdev->acl_cnt; | |
2862 | break; | |
2863 | case SCO_LINK: | |
2864 | case ESCO_LINK: | |
2865 | cnt = hdev->sco_cnt; | |
2866 | break; | |
2867 | case LE_LINK: | |
2868 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2869 | break; | |
2870 | default: | |
2871 | cnt = 0; | |
2872 | BT_ERR("Unknown link type"); | |
2873 | } | |
2874 | ||
2875 | q = cnt / num; | |
1da177e4 LT |
2876 | *quote = q ? q : 1; |
2877 | } else | |
2878 | *quote = 0; | |
2879 | ||
2880 | BT_DBG("conn %p quote %d", conn, *quote); | |
2881 | return conn; | |
2882 | } | |
2883 | ||
6039aa73 | 2884 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2885 | { |
2886 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2887 | struct hci_conn *c; |
1da177e4 | 2888 | |
bae1f5d9 | 2889 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2890 | |
bf4c6325 GP |
2891 | rcu_read_lock(); |
2892 | ||
1da177e4 | 2893 | /* Kill stalled connections */ |
bf4c6325 | 2894 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 2895 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
2896 | BT_ERR("%s killing stalled connection %pMR", |
2897 | hdev->name, &c->dst); | |
bed71748 | 2898 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2899 | } |
2900 | } | |
bf4c6325 GP |
2901 | |
2902 | rcu_read_unlock(); | |
1da177e4 LT |
2903 | } |
2904 | ||
6039aa73 GP |
2905 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2906 | int *quote) | |
1da177e4 | 2907 | { |
73d80deb LAD |
2908 | struct hci_conn_hash *h = &hdev->conn_hash; |
2909 | struct hci_chan *chan = NULL; | |
abc5de8f | 2910 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2911 | struct hci_conn *conn; |
73d80deb LAD |
2912 | int cnt, q, conn_num = 0; |
2913 | ||
2914 | BT_DBG("%s", hdev->name); | |
2915 | ||
bf4c6325 GP |
2916 | rcu_read_lock(); |
2917 | ||
2918 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2919 | struct hci_chan *tmp; |
2920 | ||
2921 | if (conn->type != type) | |
2922 | continue; | |
2923 | ||
2924 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2925 | continue; | |
2926 | ||
2927 | conn_num++; | |
2928 | ||
8192edef | 2929 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2930 | struct sk_buff *skb; |
2931 | ||
2932 | if (skb_queue_empty(&tmp->data_q)) | |
2933 | continue; | |
2934 | ||
2935 | skb = skb_peek(&tmp->data_q); | |
2936 | if (skb->priority < cur_prio) | |
2937 | continue; | |
2938 | ||
2939 | if (skb->priority > cur_prio) { | |
2940 | num = 0; | |
2941 | min = ~0; | |
2942 | cur_prio = skb->priority; | |
2943 | } | |
2944 | ||
2945 | num++; | |
2946 | ||
2947 | if (conn->sent < min) { | |
2948 | min = conn->sent; | |
2949 | chan = tmp; | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | if (hci_conn_num(hdev, type) == conn_num) | |
2954 | break; | |
2955 | } | |
2956 | ||
bf4c6325 GP |
2957 | rcu_read_unlock(); |
2958 | ||
73d80deb LAD |
2959 | if (!chan) |
2960 | return NULL; | |
2961 | ||
2962 | switch (chan->conn->type) { | |
2963 | case ACL_LINK: | |
2964 | cnt = hdev->acl_cnt; | |
2965 | break; | |
bd1eb66b AE |
2966 | case AMP_LINK: |
2967 | cnt = hdev->block_cnt; | |
2968 | break; | |
73d80deb LAD |
2969 | case SCO_LINK: |
2970 | case ESCO_LINK: | |
2971 | cnt = hdev->sco_cnt; | |
2972 | break; | |
2973 | case LE_LINK: | |
2974 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2975 | break; | |
2976 | default: | |
2977 | cnt = 0; | |
2978 | BT_ERR("Unknown link type"); | |
2979 | } | |
2980 | ||
2981 | q = cnt / num; | |
2982 | *quote = q ? q : 1; | |
2983 | BT_DBG("chan %p quote %d", chan, *quote); | |
2984 | return chan; | |
2985 | } | |
2986 | ||
02b20f0b LAD |
2987 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2988 | { | |
2989 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2990 | struct hci_conn *conn; | |
2991 | int num = 0; | |
2992 | ||
2993 | BT_DBG("%s", hdev->name); | |
2994 | ||
bf4c6325 GP |
2995 | rcu_read_lock(); |
2996 | ||
2997 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2998 | struct hci_chan *chan; |
2999 | ||
3000 | if (conn->type != type) | |
3001 | continue; | |
3002 | ||
3003 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3004 | continue; | |
3005 | ||
3006 | num++; | |
3007 | ||
8192edef | 3008 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3009 | struct sk_buff *skb; |
3010 | ||
3011 | if (chan->sent) { | |
3012 | chan->sent = 0; | |
3013 | continue; | |
3014 | } | |
3015 | ||
3016 | if (skb_queue_empty(&chan->data_q)) | |
3017 | continue; | |
3018 | ||
3019 | skb = skb_peek(&chan->data_q); | |
3020 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3021 | continue; | |
3022 | ||
3023 | skb->priority = HCI_PRIO_MAX - 1; | |
3024 | ||
3025 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3026 | skb->priority); |
02b20f0b LAD |
3027 | } |
3028 | ||
3029 | if (hci_conn_num(hdev, type) == num) | |
3030 | break; | |
3031 | } | |
bf4c6325 GP |
3032 | |
3033 | rcu_read_unlock(); | |
3034 | ||
02b20f0b LAD |
3035 | } |
3036 | ||
b71d385a AE |
3037 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3038 | { | |
3039 | /* Calculate count of blocks used by this packet */ | |
3040 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3041 | } | |
3042 | ||
6039aa73 | 3043 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3044 | { |
1da177e4 LT |
3045 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3046 | /* ACL tx timeout must be longer than maximum | |
3047 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3048 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3049 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3050 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3051 | } |
63d2bc1b | 3052 | } |
1da177e4 | 3053 | |
6039aa73 | 3054 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3055 | { |
3056 | unsigned int cnt = hdev->acl_cnt; | |
3057 | struct hci_chan *chan; | |
3058 | struct sk_buff *skb; | |
3059 | int quote; | |
3060 | ||
3061 | __check_timeout(hdev, cnt); | |
04837f64 | 3062 | |
73d80deb | 3063 | while (hdev->acl_cnt && |
a8c5fb1a | 3064 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3065 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3066 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3067 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3068 | skb->len, skb->priority); |
73d80deb | 3069 | |
ec1cce24 LAD |
3070 | /* Stop if priority has changed */ |
3071 | if (skb->priority < priority) | |
3072 | break; | |
3073 | ||
3074 | skb = skb_dequeue(&chan->data_q); | |
3075 | ||
73d80deb | 3076 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3077 | bt_cb(skb)->force_active); |
04837f64 | 3078 | |
1da177e4 LT |
3079 | hci_send_frame(skb); |
3080 | hdev->acl_last_tx = jiffies; | |
3081 | ||
3082 | hdev->acl_cnt--; | |
73d80deb LAD |
3083 | chan->sent++; |
3084 | chan->conn->sent++; | |
1da177e4 LT |
3085 | } |
3086 | } | |
02b20f0b LAD |
3087 | |
3088 | if (cnt != hdev->acl_cnt) | |
3089 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3090 | } |
3091 | ||
6039aa73 | 3092 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3093 | { |
63d2bc1b | 3094 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3095 | struct hci_chan *chan; |
3096 | struct sk_buff *skb; | |
3097 | int quote; | |
bd1eb66b | 3098 | u8 type; |
b71d385a | 3099 | |
63d2bc1b | 3100 | __check_timeout(hdev, cnt); |
b71d385a | 3101 | |
bd1eb66b AE |
3102 | BT_DBG("%s", hdev->name); |
3103 | ||
3104 | if (hdev->dev_type == HCI_AMP) | |
3105 | type = AMP_LINK; | |
3106 | else | |
3107 | type = ACL_LINK; | |
3108 | ||
b71d385a | 3109 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3110 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3111 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3112 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3113 | int blocks; | |
3114 | ||
3115 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3116 | skb->len, skb->priority); |
b71d385a AE |
3117 | |
3118 | /* Stop if priority has changed */ | |
3119 | if (skb->priority < priority) | |
3120 | break; | |
3121 | ||
3122 | skb = skb_dequeue(&chan->data_q); | |
3123 | ||
3124 | blocks = __get_blocks(hdev, skb); | |
3125 | if (blocks > hdev->block_cnt) | |
3126 | return; | |
3127 | ||
3128 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3129 | bt_cb(skb)->force_active); |
b71d385a AE |
3130 | |
3131 | hci_send_frame(skb); | |
3132 | hdev->acl_last_tx = jiffies; | |
3133 | ||
3134 | hdev->block_cnt -= blocks; | |
3135 | quote -= blocks; | |
3136 | ||
3137 | chan->sent += blocks; | |
3138 | chan->conn->sent += blocks; | |
3139 | } | |
3140 | } | |
3141 | ||
3142 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3143 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3144 | } |
3145 | ||
6039aa73 | 3146 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3147 | { |
3148 | BT_DBG("%s", hdev->name); | |
3149 | ||
bd1eb66b AE |
3150 | /* No ACL link over BR/EDR controller */ |
3151 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3152 | return; | |
3153 | ||
3154 | /* No AMP link over AMP controller */ | |
3155 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3156 | return; |
3157 | ||
3158 | switch (hdev->flow_ctl_mode) { | |
3159 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3160 | hci_sched_acl_pkt(hdev); | |
3161 | break; | |
3162 | ||
3163 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3164 | hci_sched_acl_blk(hdev); | |
3165 | break; | |
3166 | } | |
3167 | } | |
3168 | ||
1da177e4 | 3169 | /* Schedule SCO */ |
6039aa73 | 3170 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3171 | { |
3172 | struct hci_conn *conn; | |
3173 | struct sk_buff *skb; | |
3174 | int quote; | |
3175 | ||
3176 | BT_DBG("%s", hdev->name); | |
3177 | ||
52087a79 LAD |
3178 | if (!hci_conn_num(hdev, SCO_LINK)) |
3179 | return; | |
3180 | ||
1da177e4 LT |
3181 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3182 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3183 | BT_DBG("skb %p len %d", skb, skb->len); | |
3184 | hci_send_frame(skb); | |
3185 | ||
3186 | conn->sent++; | |
3187 | if (conn->sent == ~0) | |
3188 | conn->sent = 0; | |
3189 | } | |
3190 | } | |
3191 | } | |
3192 | ||
6039aa73 | 3193 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3194 | { |
3195 | struct hci_conn *conn; | |
3196 | struct sk_buff *skb; | |
3197 | int quote; | |
3198 | ||
3199 | BT_DBG("%s", hdev->name); | |
3200 | ||
52087a79 LAD |
3201 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3202 | return; | |
3203 | ||
8fc9ced3 GP |
3204 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3205 | "e))) { | |
b6a0dc82 MH |
3206 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3207 | BT_DBG("skb %p len %d", skb, skb->len); | |
3208 | hci_send_frame(skb); | |
3209 | ||
3210 | conn->sent++; | |
3211 | if (conn->sent == ~0) | |
3212 | conn->sent = 0; | |
3213 | } | |
3214 | } | |
3215 | } | |
3216 | ||
6039aa73 | 3217 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3218 | { |
73d80deb | 3219 | struct hci_chan *chan; |
6ed58ec5 | 3220 | struct sk_buff *skb; |
02b20f0b | 3221 | int quote, cnt, tmp; |
6ed58ec5 VT |
3222 | |
3223 | BT_DBG("%s", hdev->name); | |
3224 | ||
52087a79 LAD |
3225 | if (!hci_conn_num(hdev, LE_LINK)) |
3226 | return; | |
3227 | ||
6ed58ec5 VT |
3228 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3229 | /* LE tx timeout must be longer than maximum | |
3230 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3231 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3232 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3233 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3234 | } |
3235 | ||
3236 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3237 | tmp = cnt; |
73d80deb | 3238 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3239 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3240 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3241 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3242 | skb->len, skb->priority); |
6ed58ec5 | 3243 | |
ec1cce24 LAD |
3244 | /* Stop if priority has changed */ |
3245 | if (skb->priority < priority) | |
3246 | break; | |
3247 | ||
3248 | skb = skb_dequeue(&chan->data_q); | |
3249 | ||
6ed58ec5 VT |
3250 | hci_send_frame(skb); |
3251 | hdev->le_last_tx = jiffies; | |
3252 | ||
3253 | cnt--; | |
73d80deb LAD |
3254 | chan->sent++; |
3255 | chan->conn->sent++; | |
6ed58ec5 VT |
3256 | } |
3257 | } | |
73d80deb | 3258 | |
6ed58ec5 VT |
3259 | if (hdev->le_pkts) |
3260 | hdev->le_cnt = cnt; | |
3261 | else | |
3262 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3263 | |
3264 | if (cnt != tmp) | |
3265 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3266 | } |
3267 | ||
3eff45ea | 3268 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3269 | { |
3eff45ea | 3270 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3271 | struct sk_buff *skb; |
3272 | ||
6ed58ec5 | 3273 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3274 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
3275 | |
3276 | /* Schedule queues and send stuff to HCI driver */ | |
3277 | ||
3278 | hci_sched_acl(hdev); | |
3279 | ||
3280 | hci_sched_sco(hdev); | |
3281 | ||
b6a0dc82 MH |
3282 | hci_sched_esco(hdev); |
3283 | ||
6ed58ec5 VT |
3284 | hci_sched_le(hdev); |
3285 | ||
1da177e4 LT |
3286 | /* Send next queued raw (unknown type) packet */ |
3287 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
3288 | hci_send_frame(skb); | |
1da177e4 LT |
3289 | } |
3290 | ||
25985edc | 3291 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3292 | |
3293 | /* ACL data packet */ | |
6039aa73 | 3294 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3295 | { |
3296 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3297 | struct hci_conn *conn; | |
3298 | __u16 handle, flags; | |
3299 | ||
3300 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3301 | ||
3302 | handle = __le16_to_cpu(hdr->handle); | |
3303 | flags = hci_flags(handle); | |
3304 | handle = hci_handle(handle); | |
3305 | ||
f0e09510 | 3306 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3307 | handle, flags); |
1da177e4 LT |
3308 | |
3309 | hdev->stat.acl_rx++; | |
3310 | ||
3311 | hci_dev_lock(hdev); | |
3312 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3313 | hci_dev_unlock(hdev); | |
8e87d142 | 3314 | |
1da177e4 | 3315 | if (conn) { |
65983fc7 | 3316 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3317 | |
1da177e4 | 3318 | /* Send to upper protocol */ |
686ebf28 UF |
3319 | l2cap_recv_acldata(conn, skb, flags); |
3320 | return; | |
1da177e4 | 3321 | } else { |
8e87d142 | 3322 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3323 | hdev->name, handle); |
1da177e4 LT |
3324 | } |
3325 | ||
3326 | kfree_skb(skb); | |
3327 | } | |
3328 | ||
3329 | /* SCO data packet */ | |
6039aa73 | 3330 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3331 | { |
3332 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3333 | struct hci_conn *conn; | |
3334 | __u16 handle; | |
3335 | ||
3336 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3337 | ||
3338 | handle = __le16_to_cpu(hdr->handle); | |
3339 | ||
f0e09510 | 3340 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3341 | |
3342 | hdev->stat.sco_rx++; | |
3343 | ||
3344 | hci_dev_lock(hdev); | |
3345 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3346 | hci_dev_unlock(hdev); | |
3347 | ||
3348 | if (conn) { | |
1da177e4 | 3349 | /* Send to upper protocol */ |
686ebf28 UF |
3350 | sco_recv_scodata(conn, skb); |
3351 | return; | |
1da177e4 | 3352 | } else { |
8e87d142 | 3353 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3354 | hdev->name, handle); |
1da177e4 LT |
3355 | } |
3356 | ||
3357 | kfree_skb(skb); | |
3358 | } | |
3359 | ||
9238f36a JH |
3360 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3361 | { | |
3362 | struct sk_buff *skb; | |
3363 | ||
3364 | skb = skb_peek(&hdev->cmd_q); | |
3365 | if (!skb) | |
3366 | return true; | |
3367 | ||
3368 | return bt_cb(skb)->req.start; | |
3369 | } | |
3370 | ||
42c6b129 JH |
3371 | static void hci_resend_last(struct hci_dev *hdev) |
3372 | { | |
3373 | struct hci_command_hdr *sent; | |
3374 | struct sk_buff *skb; | |
3375 | u16 opcode; | |
3376 | ||
3377 | if (!hdev->sent_cmd) | |
3378 | return; | |
3379 | ||
3380 | sent = (void *) hdev->sent_cmd->data; | |
3381 | opcode = __le16_to_cpu(sent->opcode); | |
3382 | if (opcode == HCI_OP_RESET) | |
3383 | return; | |
3384 | ||
3385 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3386 | if (!skb) | |
3387 | return; | |
3388 | ||
3389 | skb_queue_head(&hdev->cmd_q, skb); | |
3390 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3391 | } | |
3392 | ||
9238f36a JH |
3393 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3394 | { | |
3395 | hci_req_complete_t req_complete = NULL; | |
3396 | struct sk_buff *skb; | |
3397 | unsigned long flags; | |
3398 | ||
3399 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3400 | ||
42c6b129 JH |
3401 | /* If the completed command doesn't match the last one that was |
3402 | * sent we need to do special handling of it. | |
9238f36a | 3403 | */ |
42c6b129 JH |
3404 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3405 | /* Some CSR based controllers generate a spontaneous | |
3406 | * reset complete event during init and any pending | |
3407 | * command will never be completed. In such a case we | |
3408 | * need to resend whatever was the last sent | |
3409 | * command. | |
3410 | */ | |
3411 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3412 | hci_resend_last(hdev); | |
3413 | ||
9238f36a | 3414 | return; |
42c6b129 | 3415 | } |
9238f36a JH |
3416 | |
3417 | /* If the command succeeded and there's still more commands in | |
3418 | * this request the request is not yet complete. | |
3419 | */ | |
3420 | if (!status && !hci_req_is_complete(hdev)) | |
3421 | return; | |
3422 | ||
3423 | /* If this was the last command in a request the complete | |
3424 | * callback would be found in hdev->sent_cmd instead of the | |
3425 | * command queue (hdev->cmd_q). | |
3426 | */ | |
3427 | if (hdev->sent_cmd) { | |
3428 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
3429 | if (req_complete) | |
3430 | goto call_complete; | |
3431 | } | |
3432 | ||
3433 | /* Remove all pending commands belonging to this request */ | |
3434 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3435 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3436 | if (bt_cb(skb)->req.start) { | |
3437 | __skb_queue_head(&hdev->cmd_q, skb); | |
3438 | break; | |
3439 | } | |
3440 | ||
3441 | req_complete = bt_cb(skb)->req.complete; | |
3442 | kfree_skb(skb); | |
3443 | } | |
3444 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3445 | ||
3446 | call_complete: | |
3447 | if (req_complete) | |
3448 | req_complete(hdev, status); | |
3449 | } | |
3450 | ||
b78752cc | 3451 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3452 | { |
b78752cc | 3453 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3454 | struct sk_buff *skb; |
3455 | ||
3456 | BT_DBG("%s", hdev->name); | |
3457 | ||
1da177e4 | 3458 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3459 | /* Send copy to monitor */ |
3460 | hci_send_to_monitor(hdev, skb); | |
3461 | ||
1da177e4 LT |
3462 | if (atomic_read(&hdev->promisc)) { |
3463 | /* Send copy to the sockets */ | |
470fe1b5 | 3464 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3465 | } |
3466 | ||
3467 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
3468 | kfree_skb(skb); | |
3469 | continue; | |
3470 | } | |
3471 | ||
3472 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3473 | /* Don't process data packets in this states. */ | |
0d48d939 | 3474 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3475 | case HCI_ACLDATA_PKT: |
3476 | case HCI_SCODATA_PKT: | |
3477 | kfree_skb(skb); | |
3478 | continue; | |
3ff50b79 | 3479 | } |
1da177e4 LT |
3480 | } |
3481 | ||
3482 | /* Process frame */ | |
0d48d939 | 3483 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3484 | case HCI_EVENT_PKT: |
b78752cc | 3485 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3486 | hci_event_packet(hdev, skb); |
3487 | break; | |
3488 | ||
3489 | case HCI_ACLDATA_PKT: | |
3490 | BT_DBG("%s ACL data packet", hdev->name); | |
3491 | hci_acldata_packet(hdev, skb); | |
3492 | break; | |
3493 | ||
3494 | case HCI_SCODATA_PKT: | |
3495 | BT_DBG("%s SCO data packet", hdev->name); | |
3496 | hci_scodata_packet(hdev, skb); | |
3497 | break; | |
3498 | ||
3499 | default: | |
3500 | kfree_skb(skb); | |
3501 | break; | |
3502 | } | |
3503 | } | |
1da177e4 LT |
3504 | } |
3505 | ||
c347b765 | 3506 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3507 | { |
c347b765 | 3508 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3509 | struct sk_buff *skb; |
3510 | ||
2104786b AE |
3511 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3512 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3513 | |
1da177e4 | 3514 | /* Send queued commands */ |
5a08ecce AE |
3515 | if (atomic_read(&hdev->cmd_cnt)) { |
3516 | skb = skb_dequeue(&hdev->cmd_q); | |
3517 | if (!skb) | |
3518 | return; | |
3519 | ||
7585b97a | 3520 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3521 | |
70f23020 AE |
3522 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
3523 | if (hdev->sent_cmd) { | |
1da177e4 LT |
3524 | atomic_dec(&hdev->cmd_cnt); |
3525 | hci_send_frame(skb); | |
7bdb8a5c SJ |
3526 | if (test_bit(HCI_RESET, &hdev->flags)) |
3527 | del_timer(&hdev->cmd_timer); | |
3528 | else | |
3529 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3530 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3531 | } else { |
3532 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3533 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3534 | } |
3535 | } | |
3536 | } | |
2519a1fc AG |
3537 | |
3538 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
3539 | { | |
3540 | /* General inquiry access code (GIAC) */ | |
3541 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3542 | struct hci_cp_inquiry cp; | |
3543 | ||
3544 | BT_DBG("%s", hdev->name); | |
3545 | ||
3546 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
3547 | return -EINPROGRESS; | |
3548 | ||
4663262c JH |
3549 | inquiry_cache_flush(hdev); |
3550 | ||
2519a1fc AG |
3551 | memset(&cp, 0, sizeof(cp)); |
3552 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3553 | cp.length = length; | |
3554 | ||
3555 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
3556 | } | |
023d5049 AG |
3557 | |
3558 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
3559 | { | |
3560 | BT_DBG("%s", hdev->name); | |
3561 | ||
3562 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 3563 | return -EALREADY; |
023d5049 AG |
3564 | |
3565 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
3566 | } | |
31f7956c AG |
3567 | |
3568 | u8 bdaddr_to_le(u8 bdaddr_type) | |
3569 | { | |
3570 | switch (bdaddr_type) { | |
3571 | case BDADDR_LE_PUBLIC: | |
3572 | return ADDR_LE_DEV_PUBLIC; | |
3573 | ||
3574 | default: | |
3575 | /* Fallback to LE Random address type */ | |
3576 | return ADDR_LE_DEV_RANDOM; | |
3577 | } | |
3578 | } |