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