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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
1da177e4 | 30 | |
8c520a59 | 31 | #include <linux/rfkill.h> |
1da177e4 LT |
32 | |
33 | #include <net/bluetooth/bluetooth.h> | |
34 | #include <net/bluetooth/hci_core.h> | |
35 | ||
b78752cc | 36 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 37 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 38 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* HCI device list */ |
41 | LIST_HEAD(hci_dev_list); | |
42 | DEFINE_RWLOCK(hci_dev_list_lock); | |
43 | ||
44 | /* HCI callback list */ | |
45 | LIST_HEAD(hci_cb_list); | |
46 | DEFINE_RWLOCK(hci_cb_list_lock); | |
47 | ||
3df92b31 SL |
48 | /* HCI ID Numbering */ |
49 | static DEFINE_IDA(hci_index_ida); | |
50 | ||
1da177e4 LT |
51 | /* ---- HCI notifications ---- */ |
52 | ||
6516455d | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 54 | { |
040030ef | 55 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* ---- HCI requests ---- */ | |
59 | ||
42c6b129 | 60 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 61 | { |
42c6b129 | 62 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
63 | |
64 | if (hdev->req_status == HCI_REQ_PEND) { | |
65 | hdev->req_result = result; | |
66 | hdev->req_status = HCI_REQ_DONE; | |
67 | wake_up_interruptible(&hdev->req_wait_q); | |
68 | } | |
69 | } | |
70 | ||
71 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
72 | { | |
73 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
74 | ||
75 | if (hdev->req_status == HCI_REQ_PEND) { | |
76 | hdev->req_result = err; | |
77 | hdev->req_status = HCI_REQ_CANCELED; | |
78 | wake_up_interruptible(&hdev->req_wait_q); | |
79 | } | |
80 | } | |
81 | ||
77a63e0a FW |
82 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
83 | u8 event) | |
75e84b7c JH |
84 | { |
85 | struct hci_ev_cmd_complete *ev; | |
86 | struct hci_event_hdr *hdr; | |
87 | struct sk_buff *skb; | |
88 | ||
89 | hci_dev_lock(hdev); | |
90 | ||
91 | skb = hdev->recv_evt; | |
92 | hdev->recv_evt = NULL; | |
93 | ||
94 | hci_dev_unlock(hdev); | |
95 | ||
96 | if (!skb) | |
97 | return ERR_PTR(-ENODATA); | |
98 | ||
99 | if (skb->len < sizeof(*hdr)) { | |
100 | BT_ERR("Too short HCI event"); | |
101 | goto failed; | |
102 | } | |
103 | ||
104 | hdr = (void *) skb->data; | |
105 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
106 | ||
7b1abbbe JH |
107 | if (event) { |
108 | if (hdr->evt != event) | |
109 | goto failed; | |
110 | return skb; | |
111 | } | |
112 | ||
75e84b7c JH |
113 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
114 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
115 | goto failed; | |
116 | } | |
117 | ||
118 | if (skb->len < sizeof(*ev)) { | |
119 | BT_ERR("Too short cmd_complete event"); | |
120 | goto failed; | |
121 | } | |
122 | ||
123 | ev = (void *) skb->data; | |
124 | skb_pull(skb, sizeof(*ev)); | |
125 | ||
126 | if (opcode == __le16_to_cpu(ev->opcode)) | |
127 | return skb; | |
128 | ||
129 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
130 | __le16_to_cpu(ev->opcode)); | |
131 | ||
132 | failed: | |
133 | kfree_skb(skb); | |
134 | return ERR_PTR(-ENODATA); | |
135 | } | |
136 | ||
7b1abbbe | 137 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 138 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
139 | { |
140 | DECLARE_WAITQUEUE(wait, current); | |
141 | struct hci_request req; | |
142 | int err = 0; | |
143 | ||
144 | BT_DBG("%s", hdev->name); | |
145 | ||
146 | hci_req_init(&req, hdev); | |
147 | ||
7b1abbbe | 148 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
149 | |
150 | hdev->req_status = HCI_REQ_PEND; | |
151 | ||
152 | err = hci_req_run(&req, hci_req_sync_complete); | |
153 | if (err < 0) | |
154 | return ERR_PTR(err); | |
155 | ||
156 | add_wait_queue(&hdev->req_wait_q, &wait); | |
157 | set_current_state(TASK_INTERRUPTIBLE); | |
158 | ||
159 | schedule_timeout(timeout); | |
160 | ||
161 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
162 | ||
163 | if (signal_pending(current)) | |
164 | return ERR_PTR(-EINTR); | |
165 | ||
166 | switch (hdev->req_status) { | |
167 | case HCI_REQ_DONE: | |
168 | err = -bt_to_errno(hdev->req_result); | |
169 | break; | |
170 | ||
171 | case HCI_REQ_CANCELED: | |
172 | err = -hdev->req_result; | |
173 | break; | |
174 | ||
175 | default: | |
176 | err = -ETIMEDOUT; | |
177 | break; | |
178 | } | |
179 | ||
180 | hdev->req_status = hdev->req_result = 0; | |
181 | ||
182 | BT_DBG("%s end: err %d", hdev->name, err); | |
183 | ||
184 | if (err < 0) | |
185 | return ERR_PTR(err); | |
186 | ||
7b1abbbe JH |
187 | return hci_get_cmd_complete(hdev, opcode, event); |
188 | } | |
189 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
190 | ||
191 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 192 | const void *param, u32 timeout) |
7b1abbbe JH |
193 | { |
194 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
195 | } |
196 | EXPORT_SYMBOL(__hci_cmd_sync); | |
197 | ||
1da177e4 | 198 | /* Execute request and wait for completion. */ |
01178cd4 | 199 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
200 | void (*func)(struct hci_request *req, |
201 | unsigned long opt), | |
01178cd4 | 202 | unsigned long opt, __u32 timeout) |
1da177e4 | 203 | { |
42c6b129 | 204 | struct hci_request req; |
1da177e4 LT |
205 | DECLARE_WAITQUEUE(wait, current); |
206 | int err = 0; | |
207 | ||
208 | BT_DBG("%s start", hdev->name); | |
209 | ||
42c6b129 JH |
210 | hci_req_init(&req, hdev); |
211 | ||
1da177e4 LT |
212 | hdev->req_status = HCI_REQ_PEND; |
213 | ||
42c6b129 | 214 | func(&req, opt); |
53cce22d | 215 | |
42c6b129 JH |
216 | err = hci_req_run(&req, hci_req_sync_complete); |
217 | if (err < 0) { | |
53cce22d | 218 | hdev->req_status = 0; |
920c8300 AG |
219 | |
220 | /* ENODATA means the HCI request command queue is empty. | |
221 | * This can happen when a request with conditionals doesn't | |
222 | * trigger any commands to be sent. This is normal behavior | |
223 | * and should not trigger an error return. | |
42c6b129 | 224 | */ |
920c8300 AG |
225 | if (err == -ENODATA) |
226 | return 0; | |
227 | ||
228 | return err; | |
53cce22d JH |
229 | } |
230 | ||
bc4445c7 AG |
231 | add_wait_queue(&hdev->req_wait_q, &wait); |
232 | set_current_state(TASK_INTERRUPTIBLE); | |
233 | ||
1da177e4 LT |
234 | schedule_timeout(timeout); |
235 | ||
236 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
237 | ||
238 | if (signal_pending(current)) | |
239 | return -EINTR; | |
240 | ||
241 | switch (hdev->req_status) { | |
242 | case HCI_REQ_DONE: | |
e175072f | 243 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
244 | break; |
245 | ||
246 | case HCI_REQ_CANCELED: | |
247 | err = -hdev->req_result; | |
248 | break; | |
249 | ||
250 | default: | |
251 | err = -ETIMEDOUT; | |
252 | break; | |
3ff50b79 | 253 | } |
1da177e4 | 254 | |
a5040efa | 255 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
256 | |
257 | BT_DBG("%s end: err %d", hdev->name, err); | |
258 | ||
259 | return err; | |
260 | } | |
261 | ||
01178cd4 | 262 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
263 | void (*req)(struct hci_request *req, |
264 | unsigned long opt), | |
01178cd4 | 265 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
266 | { |
267 | int ret; | |
268 | ||
7c6a329e MH |
269 | if (!test_bit(HCI_UP, &hdev->flags)) |
270 | return -ENETDOWN; | |
271 | ||
1da177e4 LT |
272 | /* Serialize all requests */ |
273 | hci_req_lock(hdev); | |
01178cd4 | 274 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
275 | hci_req_unlock(hdev); |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
42c6b129 | 280 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 281 | { |
42c6b129 | 282 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
283 | |
284 | /* Reset device */ | |
42c6b129 JH |
285 | set_bit(HCI_RESET, &req->hdev->flags); |
286 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
287 | } |
288 | ||
42c6b129 | 289 | static void bredr_init(struct hci_request *req) |
1da177e4 | 290 | { |
42c6b129 | 291 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 292 | |
1da177e4 | 293 | /* Read Local Supported Features */ |
42c6b129 | 294 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 295 | |
1143e5a6 | 296 | /* Read Local Version */ |
42c6b129 | 297 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
298 | |
299 | /* Read BD Address */ | |
42c6b129 | 300 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
301 | } |
302 | ||
42c6b129 | 303 | static void amp_init(struct hci_request *req) |
e61ef499 | 304 | { |
42c6b129 | 305 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 306 | |
e61ef499 | 307 | /* Read Local Version */ |
42c6b129 | 308 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 AE |
309 | |
310 | /* Read Local AMP Info */ | |
42c6b129 | 311 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
312 | |
313 | /* Read Data Blk size */ | |
42c6b129 | 314 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
e61ef499 AE |
315 | } |
316 | ||
42c6b129 | 317 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 318 | { |
42c6b129 | 319 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
320 | |
321 | BT_DBG("%s %ld", hdev->name, opt); | |
322 | ||
11778716 AE |
323 | /* Reset */ |
324 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 325 | hci_reset_req(req, 0); |
11778716 | 326 | |
e61ef499 AE |
327 | switch (hdev->dev_type) { |
328 | case HCI_BREDR: | |
42c6b129 | 329 | bredr_init(req); |
e61ef499 AE |
330 | break; |
331 | ||
332 | case HCI_AMP: | |
42c6b129 | 333 | amp_init(req); |
e61ef499 AE |
334 | break; |
335 | ||
336 | default: | |
337 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
338 | break; | |
339 | } | |
e61ef499 AE |
340 | } |
341 | ||
42c6b129 | 342 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 343 | { |
2177bab5 JH |
344 | __le16 param; |
345 | __u8 flt_type; | |
346 | ||
347 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 348 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
349 | |
350 | /* Read Class of Device */ | |
42c6b129 | 351 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
352 | |
353 | /* Read Local Name */ | |
42c6b129 | 354 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
355 | |
356 | /* Read Voice Setting */ | |
42c6b129 | 357 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 JH |
358 | |
359 | /* Clear Event Filters */ | |
360 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 361 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
362 | |
363 | /* Connection accept timeout ~20 secs */ | |
364 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 365 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 366 | |
f332ec66 JH |
367 | /* Read page scan parameters */ |
368 | if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
369 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
370 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
371 | } | |
2177bab5 JH |
372 | } |
373 | ||
42c6b129 | 374 | static void le_setup(struct hci_request *req) |
2177bab5 | 375 | { |
c73eee91 JH |
376 | struct hci_dev *hdev = req->hdev; |
377 | ||
2177bab5 | 378 | /* Read LE Buffer Size */ |
42c6b129 | 379 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
380 | |
381 | /* Read LE Local Supported Features */ | |
42c6b129 | 382 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
383 | |
384 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 385 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
386 | |
387 | /* Read LE White List Size */ | |
42c6b129 | 388 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
389 | |
390 | /* Read LE Supported States */ | |
42c6b129 | 391 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
392 | |
393 | /* LE-only controllers have LE implicitly enabled */ | |
394 | if (!lmp_bredr_capable(hdev)) | |
395 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
396 | } |
397 | ||
398 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
399 | { | |
400 | if (lmp_ext_inq_capable(hdev)) | |
401 | return 0x02; | |
402 | ||
403 | if (lmp_inq_rssi_capable(hdev)) | |
404 | return 0x01; | |
405 | ||
406 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
407 | hdev->lmp_subver == 0x0757) | |
408 | return 0x01; | |
409 | ||
410 | if (hdev->manufacturer == 15) { | |
411 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
412 | return 0x01; | |
413 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
414 | return 0x01; | |
415 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
416 | return 0x01; | |
417 | } | |
418 | ||
419 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
420 | hdev->lmp_subver == 0x1805) | |
421 | return 0x01; | |
422 | ||
423 | return 0x00; | |
424 | } | |
425 | ||
42c6b129 | 426 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
427 | { |
428 | u8 mode; | |
429 | ||
42c6b129 | 430 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 431 | |
42c6b129 | 432 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
433 | } |
434 | ||
42c6b129 | 435 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 436 | { |
42c6b129 JH |
437 | struct hci_dev *hdev = req->hdev; |
438 | ||
2177bab5 JH |
439 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
440 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
441 | * command otherwise. | |
442 | */ | |
443 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
444 | ||
445 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
446 | * any event mask for pre 1.2 devices. | |
447 | */ | |
448 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
449 | return; | |
450 | ||
451 | if (lmp_bredr_capable(hdev)) { | |
452 | events[4] |= 0x01; /* Flow Specification Complete */ | |
453 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
454 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
455 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
456 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
457 | } else { |
458 | /* Use a different default for LE-only devices */ | |
459 | memset(events, 0, sizeof(events)); | |
460 | events[0] |= 0x10; /* Disconnection Complete */ | |
461 | events[0] |= 0x80; /* Encryption Change */ | |
462 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
463 | events[1] |= 0x20; /* Command Complete */ | |
464 | events[1] |= 0x40; /* Command Status */ | |
465 | events[1] |= 0x80; /* Hardware Error */ | |
466 | events[2] |= 0x04; /* Number of Completed Packets */ | |
467 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
468 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
469 | } |
470 | ||
471 | if (lmp_inq_rssi_capable(hdev)) | |
472 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
473 | ||
474 | if (lmp_sniffsubr_capable(hdev)) | |
475 | events[5] |= 0x20; /* Sniff Subrating */ | |
476 | ||
477 | if (lmp_pause_enc_capable(hdev)) | |
478 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
479 | ||
480 | if (lmp_ext_inq_capable(hdev)) | |
481 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
482 | ||
483 | if (lmp_no_flush_capable(hdev)) | |
484 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
485 | ||
486 | if (lmp_lsto_capable(hdev)) | |
487 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
488 | ||
489 | if (lmp_ssp_capable(hdev)) { | |
490 | events[6] |= 0x01; /* IO Capability Request */ | |
491 | events[6] |= 0x02; /* IO Capability Response */ | |
492 | events[6] |= 0x04; /* User Confirmation Request */ | |
493 | events[6] |= 0x08; /* User Passkey Request */ | |
494 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
495 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
496 | events[7] |= 0x04; /* User Passkey Notification */ | |
497 | events[7] |= 0x08; /* Keypress Notification */ | |
498 | events[7] |= 0x10; /* Remote Host Supported | |
499 | * Features Notification | |
500 | */ | |
501 | } | |
502 | ||
503 | if (lmp_le_capable(hdev)) | |
504 | events[7] |= 0x20; /* LE Meta-Event */ | |
505 | ||
42c6b129 | 506 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
507 | |
508 | if (lmp_le_capable(hdev)) { | |
509 | memset(events, 0, sizeof(events)); | |
510 | events[0] = 0x1f; | |
42c6b129 JH |
511 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
512 | sizeof(events), events); | |
2177bab5 JH |
513 | } |
514 | } | |
515 | ||
42c6b129 | 516 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 517 | { |
42c6b129 JH |
518 | struct hci_dev *hdev = req->hdev; |
519 | ||
2177bab5 | 520 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 521 | bredr_setup(req); |
2177bab5 JH |
522 | |
523 | if (lmp_le_capable(hdev)) | |
42c6b129 | 524 | le_setup(req); |
2177bab5 | 525 | |
42c6b129 | 526 | hci_setup_event_mask(req); |
2177bab5 | 527 | |
3f8e2d75 JH |
528 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
529 | * local supported commands HCI command. | |
530 | */ | |
531 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 532 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
533 | |
534 | if (lmp_ssp_capable(hdev)) { | |
535 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
536 | u8 mode = 0x01; | |
42c6b129 JH |
537 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
538 | sizeof(mode), &mode); | |
2177bab5 JH |
539 | } else { |
540 | struct hci_cp_write_eir cp; | |
541 | ||
542 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
543 | memset(&cp, 0, sizeof(cp)); | |
544 | ||
42c6b129 | 545 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
546 | } |
547 | } | |
548 | ||
549 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 550 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
551 | |
552 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 553 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
554 | |
555 | if (lmp_ext_feat_capable(hdev)) { | |
556 | struct hci_cp_read_local_ext_features cp; | |
557 | ||
558 | cp.page = 0x01; | |
42c6b129 JH |
559 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
560 | sizeof(cp), &cp); | |
2177bab5 JH |
561 | } |
562 | ||
563 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
564 | u8 enable = 1; | |
42c6b129 JH |
565 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
566 | &enable); | |
2177bab5 JH |
567 | } |
568 | } | |
569 | ||
42c6b129 | 570 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 571 | { |
42c6b129 | 572 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
573 | struct hci_cp_write_def_link_policy cp; |
574 | u16 link_policy = 0; | |
575 | ||
576 | if (lmp_rswitch_capable(hdev)) | |
577 | link_policy |= HCI_LP_RSWITCH; | |
578 | if (lmp_hold_capable(hdev)) | |
579 | link_policy |= HCI_LP_HOLD; | |
580 | if (lmp_sniff_capable(hdev)) | |
581 | link_policy |= HCI_LP_SNIFF; | |
582 | if (lmp_park_capable(hdev)) | |
583 | link_policy |= HCI_LP_PARK; | |
584 | ||
585 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 586 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
587 | } |
588 | ||
42c6b129 | 589 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 590 | { |
42c6b129 | 591 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
592 | struct hci_cp_write_le_host_supported cp; |
593 | ||
c73eee91 JH |
594 | /* LE-only devices do not support explicit enablement */ |
595 | if (!lmp_bredr_capable(hdev)) | |
596 | return; | |
597 | ||
2177bab5 JH |
598 | memset(&cp, 0, sizeof(cp)); |
599 | ||
600 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
601 | cp.le = 0x01; | |
602 | cp.simul = lmp_le_br_capable(hdev); | |
603 | } | |
604 | ||
605 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
606 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
607 | &cp); | |
2177bab5 JH |
608 | } |
609 | ||
42c6b129 | 610 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 611 | { |
42c6b129 | 612 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 613 | u8 p; |
42c6b129 | 614 | |
b8f4e068 GP |
615 | /* Some Broadcom based Bluetooth controllers do not support the |
616 | * Delete Stored Link Key command. They are clearly indicating its | |
617 | * absence in the bit mask of supported commands. | |
618 | * | |
619 | * Check the supported commands and only if the the command is marked | |
620 | * as supported send it. If not supported assume that the controller | |
621 | * does not have actual support for stored link keys which makes this | |
622 | * command redundant anyway. | |
637b4cae | 623 | */ |
59f45d57 JH |
624 | if (hdev->commands[6] & 0x80) { |
625 | struct hci_cp_delete_stored_link_key cp; | |
626 | ||
627 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
628 | cp.delete_all = 0x01; | |
629 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
630 | sizeof(cp), &cp); | |
631 | } | |
632 | ||
2177bab5 | 633 | if (hdev->commands[5] & 0x10) |
42c6b129 | 634 | hci_setup_link_policy(req); |
2177bab5 | 635 | |
04b4edcb | 636 | if (lmp_le_capable(hdev)) { |
42c6b129 | 637 | hci_set_le_support(req); |
04b4edcb JH |
638 | hci_update_ad(req); |
639 | } | |
d2c5d77f JH |
640 | |
641 | /* Read features beyond page 1 if available */ | |
642 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
643 | struct hci_cp_read_local_ext_features cp; | |
644 | ||
645 | cp.page = p; | |
646 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
647 | sizeof(cp), &cp); | |
648 | } | |
2177bab5 JH |
649 | } |
650 | ||
651 | static int __hci_init(struct hci_dev *hdev) | |
652 | { | |
653 | int err; | |
654 | ||
655 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
656 | if (err < 0) | |
657 | return err; | |
658 | ||
659 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
660 | * BR/EDR/LE type controllers. AMP controllers only need the | |
661 | * first stage init. | |
662 | */ | |
663 | if (hdev->dev_type != HCI_BREDR) | |
664 | return 0; | |
665 | ||
666 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
667 | if (err < 0) | |
668 | return err; | |
669 | ||
670 | return __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); | |
671 | } | |
672 | ||
42c6b129 | 673 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
674 | { |
675 | __u8 scan = opt; | |
676 | ||
42c6b129 | 677 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
678 | |
679 | /* Inquiry and Page scans */ | |
42c6b129 | 680 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
681 | } |
682 | ||
42c6b129 | 683 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
684 | { |
685 | __u8 auth = opt; | |
686 | ||
42c6b129 | 687 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
688 | |
689 | /* Authentication */ | |
42c6b129 | 690 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
691 | } |
692 | ||
42c6b129 | 693 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
694 | { |
695 | __u8 encrypt = opt; | |
696 | ||
42c6b129 | 697 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 698 | |
e4e8e37c | 699 | /* Encryption */ |
42c6b129 | 700 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
701 | } |
702 | ||
42c6b129 | 703 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
704 | { |
705 | __le16 policy = cpu_to_le16(opt); | |
706 | ||
42c6b129 | 707 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
708 | |
709 | /* Default link policy */ | |
42c6b129 | 710 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
711 | } |
712 | ||
8e87d142 | 713 | /* Get HCI device by index. |
1da177e4 LT |
714 | * Device is held on return. */ |
715 | struct hci_dev *hci_dev_get(int index) | |
716 | { | |
8035ded4 | 717 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
718 | |
719 | BT_DBG("%d", index); | |
720 | ||
721 | if (index < 0) | |
722 | return NULL; | |
723 | ||
724 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 725 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
726 | if (d->id == index) { |
727 | hdev = hci_dev_hold(d); | |
728 | break; | |
729 | } | |
730 | } | |
731 | read_unlock(&hci_dev_list_lock); | |
732 | return hdev; | |
733 | } | |
1da177e4 LT |
734 | |
735 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 736 | |
30dc78e1 JH |
737 | bool hci_discovery_active(struct hci_dev *hdev) |
738 | { | |
739 | struct discovery_state *discov = &hdev->discovery; | |
740 | ||
6fbe195d | 741 | switch (discov->state) { |
343f935b | 742 | case DISCOVERY_FINDING: |
6fbe195d | 743 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
744 | return true; |
745 | ||
6fbe195d AG |
746 | default: |
747 | return false; | |
748 | } | |
30dc78e1 JH |
749 | } |
750 | ||
ff9ef578 JH |
751 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
752 | { | |
753 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
754 | ||
755 | if (hdev->discovery.state == state) | |
756 | return; | |
757 | ||
758 | switch (state) { | |
759 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
760 | if (hdev->discovery.state != DISCOVERY_STARTING) |
761 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
762 | break; |
763 | case DISCOVERY_STARTING: | |
764 | break; | |
343f935b | 765 | case DISCOVERY_FINDING: |
ff9ef578 JH |
766 | mgmt_discovering(hdev, 1); |
767 | break; | |
30dc78e1 JH |
768 | case DISCOVERY_RESOLVING: |
769 | break; | |
ff9ef578 JH |
770 | case DISCOVERY_STOPPING: |
771 | break; | |
772 | } | |
773 | ||
774 | hdev->discovery.state = state; | |
775 | } | |
776 | ||
1f9b9a5d | 777 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 778 | { |
30883512 | 779 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 780 | struct inquiry_entry *p, *n; |
1da177e4 | 781 | |
561aafbc JH |
782 | list_for_each_entry_safe(p, n, &cache->all, all) { |
783 | list_del(&p->all); | |
b57c1a56 | 784 | kfree(p); |
1da177e4 | 785 | } |
561aafbc JH |
786 | |
787 | INIT_LIST_HEAD(&cache->unknown); | |
788 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
789 | } |
790 | ||
a8c5fb1a GP |
791 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
792 | bdaddr_t *bdaddr) | |
1da177e4 | 793 | { |
30883512 | 794 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
795 | struct inquiry_entry *e; |
796 | ||
6ed93dc6 | 797 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 798 | |
561aafbc JH |
799 | list_for_each_entry(e, &cache->all, all) { |
800 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
801 | return e; | |
802 | } | |
803 | ||
804 | return NULL; | |
805 | } | |
806 | ||
807 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 808 | bdaddr_t *bdaddr) |
561aafbc | 809 | { |
30883512 | 810 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
811 | struct inquiry_entry *e; |
812 | ||
6ed93dc6 | 813 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
814 | |
815 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 816 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
817 | return e; |
818 | } | |
819 | ||
820 | return NULL; | |
1da177e4 LT |
821 | } |
822 | ||
30dc78e1 | 823 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
824 | bdaddr_t *bdaddr, |
825 | int state) | |
30dc78e1 JH |
826 | { |
827 | struct discovery_state *cache = &hdev->discovery; | |
828 | struct inquiry_entry *e; | |
829 | ||
6ed93dc6 | 830 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
831 | |
832 | list_for_each_entry(e, &cache->resolve, list) { | |
833 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
834 | return e; | |
835 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
836 | return e; | |
837 | } | |
838 | ||
839 | return NULL; | |
840 | } | |
841 | ||
a3d4e20a | 842 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 843 | struct inquiry_entry *ie) |
a3d4e20a JH |
844 | { |
845 | struct discovery_state *cache = &hdev->discovery; | |
846 | struct list_head *pos = &cache->resolve; | |
847 | struct inquiry_entry *p; | |
848 | ||
849 | list_del(&ie->list); | |
850 | ||
851 | list_for_each_entry(p, &cache->resolve, list) { | |
852 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 853 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
854 | break; |
855 | pos = &p->list; | |
856 | } | |
857 | ||
858 | list_add(&ie->list, pos); | |
859 | } | |
860 | ||
3175405b | 861 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 862 | bool name_known, bool *ssp) |
1da177e4 | 863 | { |
30883512 | 864 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 865 | struct inquiry_entry *ie; |
1da177e4 | 866 | |
6ed93dc6 | 867 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 868 | |
2b2fec4d SJ |
869 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
870 | ||
388fc8fa JH |
871 | if (ssp) |
872 | *ssp = data->ssp_mode; | |
873 | ||
70f23020 | 874 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 875 | if (ie) { |
388fc8fa JH |
876 | if (ie->data.ssp_mode && ssp) |
877 | *ssp = true; | |
878 | ||
a3d4e20a | 879 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 880 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
881 | ie->data.rssi = data->rssi; |
882 | hci_inquiry_cache_update_resolve(hdev, ie); | |
883 | } | |
884 | ||
561aafbc | 885 | goto update; |
a3d4e20a | 886 | } |
561aafbc JH |
887 | |
888 | /* Entry not in the cache. Add new one. */ | |
889 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
890 | if (!ie) | |
3175405b | 891 | return false; |
561aafbc JH |
892 | |
893 | list_add(&ie->all, &cache->all); | |
894 | ||
895 | if (name_known) { | |
896 | ie->name_state = NAME_KNOWN; | |
897 | } else { | |
898 | ie->name_state = NAME_NOT_KNOWN; | |
899 | list_add(&ie->list, &cache->unknown); | |
900 | } | |
70f23020 | 901 | |
561aafbc JH |
902 | update: |
903 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 904 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
905 | ie->name_state = NAME_KNOWN; |
906 | list_del(&ie->list); | |
1da177e4 LT |
907 | } |
908 | ||
70f23020 AE |
909 | memcpy(&ie->data, data, sizeof(*data)); |
910 | ie->timestamp = jiffies; | |
1da177e4 | 911 | cache->timestamp = jiffies; |
3175405b JH |
912 | |
913 | if (ie->name_state == NAME_NOT_KNOWN) | |
914 | return false; | |
915 | ||
916 | return true; | |
1da177e4 LT |
917 | } |
918 | ||
919 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
920 | { | |
30883512 | 921 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
922 | struct inquiry_info *info = (struct inquiry_info *) buf; |
923 | struct inquiry_entry *e; | |
924 | int copied = 0; | |
925 | ||
561aafbc | 926 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 927 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
928 | |
929 | if (copied >= num) | |
930 | break; | |
931 | ||
1da177e4 LT |
932 | bacpy(&info->bdaddr, &data->bdaddr); |
933 | info->pscan_rep_mode = data->pscan_rep_mode; | |
934 | info->pscan_period_mode = data->pscan_period_mode; | |
935 | info->pscan_mode = data->pscan_mode; | |
936 | memcpy(info->dev_class, data->dev_class, 3); | |
937 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 938 | |
1da177e4 | 939 | info++; |
b57c1a56 | 940 | copied++; |
1da177e4 LT |
941 | } |
942 | ||
943 | BT_DBG("cache %p, copied %d", cache, copied); | |
944 | return copied; | |
945 | } | |
946 | ||
42c6b129 | 947 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
948 | { |
949 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 950 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
951 | struct hci_cp_inquiry cp; |
952 | ||
953 | BT_DBG("%s", hdev->name); | |
954 | ||
955 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
956 | return; | |
957 | ||
958 | /* Start Inquiry */ | |
959 | memcpy(&cp.lap, &ir->lap, 3); | |
960 | cp.length = ir->length; | |
961 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 962 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
963 | } |
964 | ||
3e13fa1e AG |
965 | static int wait_inquiry(void *word) |
966 | { | |
967 | schedule(); | |
968 | return signal_pending(current); | |
969 | } | |
970 | ||
1da177e4 LT |
971 | int hci_inquiry(void __user *arg) |
972 | { | |
973 | __u8 __user *ptr = arg; | |
974 | struct hci_inquiry_req ir; | |
975 | struct hci_dev *hdev; | |
976 | int err = 0, do_inquiry = 0, max_rsp; | |
977 | long timeo; | |
978 | __u8 *buf; | |
979 | ||
980 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
981 | return -EFAULT; | |
982 | ||
5a08ecce AE |
983 | hdev = hci_dev_get(ir.dev_id); |
984 | if (!hdev) | |
1da177e4 LT |
985 | return -ENODEV; |
986 | ||
09fd0de5 | 987 | hci_dev_lock(hdev); |
8e87d142 | 988 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 989 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 990 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
991 | do_inquiry = 1; |
992 | } | |
09fd0de5 | 993 | hci_dev_unlock(hdev); |
1da177e4 | 994 | |
04837f64 | 995 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
996 | |
997 | if (do_inquiry) { | |
01178cd4 JH |
998 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
999 | timeo); | |
70f23020 AE |
1000 | if (err < 0) |
1001 | goto done; | |
3e13fa1e AG |
1002 | |
1003 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1004 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1005 | */ | |
1006 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
1007 | TASK_INTERRUPTIBLE)) | |
1008 | return -EINTR; | |
70f23020 | 1009 | } |
1da177e4 | 1010 | |
8fc9ced3 GP |
1011 | /* for unlimited number of responses we will use buffer with |
1012 | * 255 entries | |
1013 | */ | |
1da177e4 LT |
1014 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1015 | ||
1016 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1017 | * copy it to the user space. | |
1018 | */ | |
01df8c31 | 1019 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1020 | if (!buf) { |
1da177e4 LT |
1021 | err = -ENOMEM; |
1022 | goto done; | |
1023 | } | |
1024 | ||
09fd0de5 | 1025 | hci_dev_lock(hdev); |
1da177e4 | 1026 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1027 | hci_dev_unlock(hdev); |
1da177e4 LT |
1028 | |
1029 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1030 | ||
1031 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1032 | ptr += sizeof(ir); | |
1033 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1034 | ir.num_rsp)) |
1da177e4 | 1035 | err = -EFAULT; |
8e87d142 | 1036 | } else |
1da177e4 LT |
1037 | err = -EFAULT; |
1038 | ||
1039 | kfree(buf); | |
1040 | ||
1041 | done: | |
1042 | hci_dev_put(hdev); | |
1043 | return err; | |
1044 | } | |
1045 | ||
3f0f524b JH |
1046 | static u8 create_ad(struct hci_dev *hdev, u8 *ptr) |
1047 | { | |
1048 | u8 ad_len = 0, flags = 0; | |
1049 | size_t name_len; | |
1050 | ||
1051 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) | |
1052 | flags |= LE_AD_GENERAL; | |
1053 | ||
1054 | if (!lmp_bredr_capable(hdev)) | |
1055 | flags |= LE_AD_NO_BREDR; | |
1056 | ||
1057 | if (lmp_le_br_capable(hdev)) | |
1058 | flags |= LE_AD_SIM_LE_BREDR_CTRL; | |
1059 | ||
1060 | if (lmp_host_le_br_capable(hdev)) | |
1061 | flags |= LE_AD_SIM_LE_BREDR_HOST; | |
1062 | ||
1063 | if (flags) { | |
1064 | BT_DBG("adv flags 0x%02x", flags); | |
1065 | ||
1066 | ptr[0] = 2; | |
1067 | ptr[1] = EIR_FLAGS; | |
1068 | ptr[2] = flags; | |
1069 | ||
1070 | ad_len += 3; | |
1071 | ptr += 3; | |
1072 | } | |
1073 | ||
1074 | if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) { | |
1075 | ptr[0] = 2; | |
1076 | ptr[1] = EIR_TX_POWER; | |
1077 | ptr[2] = (u8) hdev->adv_tx_power; | |
1078 | ||
1079 | ad_len += 3; | |
1080 | ptr += 3; | |
1081 | } | |
1082 | ||
1083 | name_len = strlen(hdev->dev_name); | |
1084 | if (name_len > 0) { | |
1085 | size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; | |
1086 | ||
1087 | if (name_len > max_len) { | |
1088 | name_len = max_len; | |
1089 | ptr[1] = EIR_NAME_SHORT; | |
1090 | } else | |
1091 | ptr[1] = EIR_NAME_COMPLETE; | |
1092 | ||
1093 | ptr[0] = name_len + 1; | |
1094 | ||
1095 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
1096 | ||
1097 | ad_len += (name_len + 2); | |
1098 | ptr += (name_len + 2); | |
1099 | } | |
1100 | ||
1101 | return ad_len; | |
1102 | } | |
1103 | ||
04b4edcb | 1104 | void hci_update_ad(struct hci_request *req) |
3f0f524b | 1105 | { |
04b4edcb | 1106 | struct hci_dev *hdev = req->hdev; |
3f0f524b JH |
1107 | struct hci_cp_le_set_adv_data cp; |
1108 | u8 len; | |
3f0f524b | 1109 | |
04b4edcb JH |
1110 | if (!lmp_le_capable(hdev)) |
1111 | return; | |
3f0f524b JH |
1112 | |
1113 | memset(&cp, 0, sizeof(cp)); | |
1114 | ||
1115 | len = create_ad(hdev, cp.data); | |
1116 | ||
1117 | if (hdev->adv_data_len == len && | |
04b4edcb JH |
1118 | memcmp(cp.data, hdev->adv_data, len) == 0) |
1119 | return; | |
3f0f524b JH |
1120 | |
1121 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1122 | hdev->adv_data_len = len; | |
1123 | ||
1124 | cp.length = len; | |
3f0f524b | 1125 | |
04b4edcb | 1126 | hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); |
3f0f524b JH |
1127 | } |
1128 | ||
1da177e4 LT |
1129 | /* ---- HCI ioctl helpers ---- */ |
1130 | ||
1131 | int hci_dev_open(__u16 dev) | |
1132 | { | |
1133 | struct hci_dev *hdev; | |
1134 | int ret = 0; | |
1135 | ||
5a08ecce AE |
1136 | hdev = hci_dev_get(dev); |
1137 | if (!hdev) | |
1da177e4 LT |
1138 | return -ENODEV; |
1139 | ||
1140 | BT_DBG("%s %p", hdev->name, hdev); | |
1141 | ||
1142 | hci_req_lock(hdev); | |
1143 | ||
94324962 JH |
1144 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1145 | ret = -ENODEV; | |
1146 | goto done; | |
1147 | } | |
1148 | ||
5e130367 | 1149 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { |
611b30f7 MH |
1150 | ret = -ERFKILL; |
1151 | goto done; | |
1152 | } | |
1153 | ||
1da177e4 LT |
1154 | if (test_bit(HCI_UP, &hdev->flags)) { |
1155 | ret = -EALREADY; | |
1156 | goto done; | |
1157 | } | |
1158 | ||
1da177e4 LT |
1159 | if (hdev->open(hdev)) { |
1160 | ret = -EIO; | |
1161 | goto done; | |
1162 | } | |
1163 | ||
f41c70c4 MH |
1164 | atomic_set(&hdev->cmd_cnt, 1); |
1165 | set_bit(HCI_INIT, &hdev->flags); | |
1166 | ||
1167 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1168 | ret = hdev->setup(hdev); | |
1169 | ||
1170 | if (!ret) { | |
1171 | /* Treat all non BR/EDR controllers as raw devices if | |
1172 | * enable_hs is not set. | |
1173 | */ | |
1174 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
1175 | set_bit(HCI_RAW, &hdev->flags); | |
1176 | ||
1177 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
1178 | set_bit(HCI_RAW, &hdev->flags); | |
1179 | ||
1180 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
1181 | ret = __hci_init(hdev); | |
1da177e4 LT |
1182 | } |
1183 | ||
f41c70c4 MH |
1184 | clear_bit(HCI_INIT, &hdev->flags); |
1185 | ||
1da177e4 LT |
1186 | if (!ret) { |
1187 | hci_dev_hold(hdev); | |
1188 | set_bit(HCI_UP, &hdev->flags); | |
1189 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a AE |
1190 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
1191 | mgmt_valid_hdev(hdev)) { | |
09fd0de5 | 1192 | hci_dev_lock(hdev); |
744cf19e | 1193 | mgmt_powered(hdev, 1); |
09fd0de5 | 1194 | hci_dev_unlock(hdev); |
56e5cb86 | 1195 | } |
8e87d142 | 1196 | } else { |
1da177e4 | 1197 | /* Init failed, cleanup */ |
3eff45ea | 1198 | flush_work(&hdev->tx_work); |
c347b765 | 1199 | flush_work(&hdev->cmd_work); |
b78752cc | 1200 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1201 | |
1202 | skb_queue_purge(&hdev->cmd_q); | |
1203 | skb_queue_purge(&hdev->rx_q); | |
1204 | ||
1205 | if (hdev->flush) | |
1206 | hdev->flush(hdev); | |
1207 | ||
1208 | if (hdev->sent_cmd) { | |
1209 | kfree_skb(hdev->sent_cmd); | |
1210 | hdev->sent_cmd = NULL; | |
1211 | } | |
1212 | ||
1213 | hdev->close(hdev); | |
1214 | hdev->flags = 0; | |
1215 | } | |
1216 | ||
1217 | done: | |
1218 | hci_req_unlock(hdev); | |
1219 | hci_dev_put(hdev); | |
1220 | return ret; | |
1221 | } | |
1222 | ||
1223 | static int hci_dev_do_close(struct hci_dev *hdev) | |
1224 | { | |
1225 | BT_DBG("%s %p", hdev->name, hdev); | |
1226 | ||
78c04c0b VCG |
1227 | cancel_delayed_work(&hdev->power_off); |
1228 | ||
1da177e4 LT |
1229 | hci_req_cancel(hdev, ENODEV); |
1230 | hci_req_lock(hdev); | |
1231 | ||
1232 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1233 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1234 | hci_req_unlock(hdev); |
1235 | return 0; | |
1236 | } | |
1237 | ||
3eff45ea GP |
1238 | /* Flush RX and TX works */ |
1239 | flush_work(&hdev->tx_work); | |
b78752cc | 1240 | flush_work(&hdev->rx_work); |
1da177e4 | 1241 | |
16ab91ab | 1242 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1243 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1244 | hdev->discov_timeout = 0; |
5e5282bb | 1245 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1246 | } |
1247 | ||
a8b2d5c2 | 1248 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1249 | cancel_delayed_work(&hdev->service_cache); |
1250 | ||
7ba8b4be AG |
1251 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1252 | ||
09fd0de5 | 1253 | hci_dev_lock(hdev); |
1f9b9a5d | 1254 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1255 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1256 | hci_dev_unlock(hdev); |
1da177e4 LT |
1257 | |
1258 | hci_notify(hdev, HCI_DEV_DOWN); | |
1259 | ||
1260 | if (hdev->flush) | |
1261 | hdev->flush(hdev); | |
1262 | ||
1263 | /* Reset device */ | |
1264 | skb_queue_purge(&hdev->cmd_q); | |
1265 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1266 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 1267 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1268 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1269 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1270 | clear_bit(HCI_INIT, &hdev->flags); |
1271 | } | |
1272 | ||
c347b765 GP |
1273 | /* flush cmd work */ |
1274 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1275 | |
1276 | /* Drop queues */ | |
1277 | skb_queue_purge(&hdev->rx_q); | |
1278 | skb_queue_purge(&hdev->cmd_q); | |
1279 | skb_queue_purge(&hdev->raw_q); | |
1280 | ||
1281 | /* Drop last sent command */ | |
1282 | if (hdev->sent_cmd) { | |
b79f44c1 | 1283 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1284 | kfree_skb(hdev->sent_cmd); |
1285 | hdev->sent_cmd = NULL; | |
1286 | } | |
1287 | ||
b6ddb638 JH |
1288 | kfree_skb(hdev->recv_evt); |
1289 | hdev->recv_evt = NULL; | |
1290 | ||
1da177e4 LT |
1291 | /* After this point our queues are empty |
1292 | * and no tasks are scheduled. */ | |
1293 | hdev->close(hdev); | |
1294 | ||
35b973c9 JH |
1295 | /* Clear flags */ |
1296 | hdev->flags = 0; | |
1297 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1298 | ||
bb4b2a9a AE |
1299 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
1300 | mgmt_valid_hdev(hdev)) { | |
8ee56540 MH |
1301 | hci_dev_lock(hdev); |
1302 | mgmt_powered(hdev, 0); | |
1303 | hci_dev_unlock(hdev); | |
1304 | } | |
5add6af8 | 1305 | |
ced5c338 AE |
1306 | /* Controller radio is available but is currently powered down */ |
1307 | hdev->amp_status = 0; | |
1308 | ||
e59fda8d | 1309 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1310 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1311 | |
1da177e4 LT |
1312 | hci_req_unlock(hdev); |
1313 | ||
1314 | hci_dev_put(hdev); | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | int hci_dev_close(__u16 dev) | |
1319 | { | |
1320 | struct hci_dev *hdev; | |
1321 | int err; | |
1322 | ||
70f23020 AE |
1323 | hdev = hci_dev_get(dev); |
1324 | if (!hdev) | |
1da177e4 | 1325 | return -ENODEV; |
8ee56540 MH |
1326 | |
1327 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1328 | cancel_delayed_work(&hdev->power_off); | |
1329 | ||
1da177e4 | 1330 | err = hci_dev_do_close(hdev); |
8ee56540 | 1331 | |
1da177e4 LT |
1332 | hci_dev_put(hdev); |
1333 | return err; | |
1334 | } | |
1335 | ||
1336 | int hci_dev_reset(__u16 dev) | |
1337 | { | |
1338 | struct hci_dev *hdev; | |
1339 | int ret = 0; | |
1340 | ||
70f23020 AE |
1341 | hdev = hci_dev_get(dev); |
1342 | if (!hdev) | |
1da177e4 LT |
1343 | return -ENODEV; |
1344 | ||
1345 | hci_req_lock(hdev); | |
1da177e4 LT |
1346 | |
1347 | if (!test_bit(HCI_UP, &hdev->flags)) | |
1348 | goto done; | |
1349 | ||
1350 | /* Drop queues */ | |
1351 | skb_queue_purge(&hdev->rx_q); | |
1352 | skb_queue_purge(&hdev->cmd_q); | |
1353 | ||
09fd0de5 | 1354 | hci_dev_lock(hdev); |
1f9b9a5d | 1355 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1356 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1357 | hci_dev_unlock(hdev); |
1da177e4 LT |
1358 | |
1359 | if (hdev->flush) | |
1360 | hdev->flush(hdev); | |
1361 | ||
8e87d142 | 1362 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1363 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1364 | |
1365 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1366 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1367 | |
1368 | done: | |
1da177e4 LT |
1369 | hci_req_unlock(hdev); |
1370 | hci_dev_put(hdev); | |
1371 | return ret; | |
1372 | } | |
1373 | ||
1374 | int hci_dev_reset_stat(__u16 dev) | |
1375 | { | |
1376 | struct hci_dev *hdev; | |
1377 | int ret = 0; | |
1378 | ||
70f23020 AE |
1379 | hdev = hci_dev_get(dev); |
1380 | if (!hdev) | |
1da177e4 LT |
1381 | return -ENODEV; |
1382 | ||
1383 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
1384 | ||
1385 | hci_dev_put(hdev); | |
1386 | ||
1387 | return ret; | |
1388 | } | |
1389 | ||
1390 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1391 | { | |
1392 | struct hci_dev *hdev; | |
1393 | struct hci_dev_req dr; | |
1394 | int err = 0; | |
1395 | ||
1396 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1397 | return -EFAULT; | |
1398 | ||
70f23020 AE |
1399 | hdev = hci_dev_get(dr.dev_id); |
1400 | if (!hdev) | |
1da177e4 LT |
1401 | return -ENODEV; |
1402 | ||
1403 | switch (cmd) { | |
1404 | case HCISETAUTH: | |
01178cd4 JH |
1405 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1406 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1407 | break; |
1408 | ||
1409 | case HCISETENCRYPT: | |
1410 | if (!lmp_encrypt_capable(hdev)) { | |
1411 | err = -EOPNOTSUPP; | |
1412 | break; | |
1413 | } | |
1414 | ||
1415 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1416 | /* Auth must be enabled first */ | |
01178cd4 JH |
1417 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1418 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1419 | if (err) |
1420 | break; | |
1421 | } | |
1422 | ||
01178cd4 JH |
1423 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1424 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1425 | break; |
1426 | ||
1427 | case HCISETSCAN: | |
01178cd4 JH |
1428 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1429 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1430 | break; |
1431 | ||
1da177e4 | 1432 | case HCISETLINKPOL: |
01178cd4 JH |
1433 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1434 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1435 | break; |
1436 | ||
1437 | case HCISETLINKMODE: | |
e4e8e37c MH |
1438 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1439 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1440 | break; | |
1441 | ||
1442 | case HCISETPTYPE: | |
1443 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1444 | break; |
1445 | ||
1446 | case HCISETACLMTU: | |
e4e8e37c MH |
1447 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1448 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1449 | break; |
1450 | ||
1451 | case HCISETSCOMTU: | |
e4e8e37c MH |
1452 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1453 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1454 | break; |
1455 | ||
1456 | default: | |
1457 | err = -EINVAL; | |
1458 | break; | |
1459 | } | |
e4e8e37c | 1460 | |
1da177e4 LT |
1461 | hci_dev_put(hdev); |
1462 | return err; | |
1463 | } | |
1464 | ||
1465 | int hci_get_dev_list(void __user *arg) | |
1466 | { | |
8035ded4 | 1467 | struct hci_dev *hdev; |
1da177e4 LT |
1468 | struct hci_dev_list_req *dl; |
1469 | struct hci_dev_req *dr; | |
1da177e4 LT |
1470 | int n = 0, size, err; |
1471 | __u16 dev_num; | |
1472 | ||
1473 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1474 | return -EFAULT; | |
1475 | ||
1476 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1477 | return -EINVAL; | |
1478 | ||
1479 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1480 | ||
70f23020 AE |
1481 | dl = kzalloc(size, GFP_KERNEL); |
1482 | if (!dl) | |
1da177e4 LT |
1483 | return -ENOMEM; |
1484 | ||
1485 | dr = dl->dev_req; | |
1486 | ||
f20d09d5 | 1487 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1488 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1489 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1490 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1491 | |
a8b2d5c2 JH |
1492 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1493 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1494 | |
1da177e4 LT |
1495 | (dr + n)->dev_id = hdev->id; |
1496 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1497 | |
1da177e4 LT |
1498 | if (++n >= dev_num) |
1499 | break; | |
1500 | } | |
f20d09d5 | 1501 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1502 | |
1503 | dl->dev_num = n; | |
1504 | size = sizeof(*dl) + n * sizeof(*dr); | |
1505 | ||
1506 | err = copy_to_user(arg, dl, size); | |
1507 | kfree(dl); | |
1508 | ||
1509 | return err ? -EFAULT : 0; | |
1510 | } | |
1511 | ||
1512 | int hci_get_dev_info(void __user *arg) | |
1513 | { | |
1514 | struct hci_dev *hdev; | |
1515 | struct hci_dev_info di; | |
1516 | int err = 0; | |
1517 | ||
1518 | if (copy_from_user(&di, arg, sizeof(di))) | |
1519 | return -EFAULT; | |
1520 | ||
70f23020 AE |
1521 | hdev = hci_dev_get(di.dev_id); |
1522 | if (!hdev) | |
1da177e4 LT |
1523 | return -ENODEV; |
1524 | ||
a8b2d5c2 | 1525 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1526 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1527 | |
a8b2d5c2 JH |
1528 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1529 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1530 | |
1da177e4 LT |
1531 | strcpy(di.name, hdev->name); |
1532 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1533 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1534 | di.flags = hdev->flags; |
1535 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1536 | if (lmp_bredr_capable(hdev)) { |
1537 | di.acl_mtu = hdev->acl_mtu; | |
1538 | di.acl_pkts = hdev->acl_pkts; | |
1539 | di.sco_mtu = hdev->sco_mtu; | |
1540 | di.sco_pkts = hdev->sco_pkts; | |
1541 | } else { | |
1542 | di.acl_mtu = hdev->le_mtu; | |
1543 | di.acl_pkts = hdev->le_pkts; | |
1544 | di.sco_mtu = 0; | |
1545 | di.sco_pkts = 0; | |
1546 | } | |
1da177e4 LT |
1547 | di.link_policy = hdev->link_policy; |
1548 | di.link_mode = hdev->link_mode; | |
1549 | ||
1550 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1551 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1552 | ||
1553 | if (copy_to_user(arg, &di, sizeof(di))) | |
1554 | err = -EFAULT; | |
1555 | ||
1556 | hci_dev_put(hdev); | |
1557 | ||
1558 | return err; | |
1559 | } | |
1560 | ||
1561 | /* ---- Interface to HCI drivers ---- */ | |
1562 | ||
611b30f7 MH |
1563 | static int hci_rfkill_set_block(void *data, bool blocked) |
1564 | { | |
1565 | struct hci_dev *hdev = data; | |
1566 | ||
1567 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1568 | ||
5e130367 JH |
1569 | if (blocked) { |
1570 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1571 | hci_dev_do_close(hdev); | |
1572 | } else { | |
1573 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1574 | } | |
611b30f7 MH |
1575 | |
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | static const struct rfkill_ops hci_rfkill_ops = { | |
1580 | .set_block = hci_rfkill_set_block, | |
1581 | }; | |
1582 | ||
ab81cbf9 JH |
1583 | static void hci_power_on(struct work_struct *work) |
1584 | { | |
1585 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1586 | int err; |
ab81cbf9 JH |
1587 | |
1588 | BT_DBG("%s", hdev->name); | |
1589 | ||
96570ffc JH |
1590 | err = hci_dev_open(hdev->id); |
1591 | if (err < 0) { | |
1592 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 1593 | return; |
96570ffc | 1594 | } |
ab81cbf9 | 1595 | |
a8b2d5c2 | 1596 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
19202573 JH |
1597 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1598 | HCI_AUTO_OFF_TIMEOUT); | |
ab81cbf9 | 1599 | |
a8b2d5c2 | 1600 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1601 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1602 | } |
1603 | ||
1604 | static void hci_power_off(struct work_struct *work) | |
1605 | { | |
3243553f | 1606 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1607 | power_off.work); |
ab81cbf9 JH |
1608 | |
1609 | BT_DBG("%s", hdev->name); | |
1610 | ||
8ee56540 | 1611 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1612 | } |
1613 | ||
16ab91ab JH |
1614 | static void hci_discov_off(struct work_struct *work) |
1615 | { | |
1616 | struct hci_dev *hdev; | |
1617 | u8 scan = SCAN_PAGE; | |
1618 | ||
1619 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1620 | ||
1621 | BT_DBG("%s", hdev->name); | |
1622 | ||
09fd0de5 | 1623 | hci_dev_lock(hdev); |
16ab91ab JH |
1624 | |
1625 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1626 | ||
1627 | hdev->discov_timeout = 0; | |
1628 | ||
09fd0de5 | 1629 | hci_dev_unlock(hdev); |
16ab91ab JH |
1630 | } |
1631 | ||
2aeb9a1a JH |
1632 | int hci_uuids_clear(struct hci_dev *hdev) |
1633 | { | |
4821002c | 1634 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1635 | |
4821002c JH |
1636 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1637 | list_del(&uuid->list); | |
2aeb9a1a JH |
1638 | kfree(uuid); |
1639 | } | |
1640 | ||
1641 | return 0; | |
1642 | } | |
1643 | ||
55ed8ca1 JH |
1644 | int hci_link_keys_clear(struct hci_dev *hdev) |
1645 | { | |
1646 | struct list_head *p, *n; | |
1647 | ||
1648 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1649 | struct link_key *key; | |
1650 | ||
1651 | key = list_entry(p, struct link_key, list); | |
1652 | ||
1653 | list_del(p); | |
1654 | kfree(key); | |
1655 | } | |
1656 | ||
1657 | return 0; | |
1658 | } | |
1659 | ||
b899efaf VCG |
1660 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1661 | { | |
1662 | struct smp_ltk *k, *tmp; | |
1663 | ||
1664 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1665 | list_del(&k->list); | |
1666 | kfree(k); | |
1667 | } | |
1668 | ||
1669 | return 0; | |
1670 | } | |
1671 | ||
55ed8ca1 JH |
1672 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1673 | { | |
8035ded4 | 1674 | struct link_key *k; |
55ed8ca1 | 1675 | |
8035ded4 | 1676 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1677 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1678 | return k; | |
55ed8ca1 JH |
1679 | |
1680 | return NULL; | |
1681 | } | |
1682 | ||
745c0ce3 | 1683 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1684 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1685 | { |
1686 | /* Legacy key */ | |
1687 | if (key_type < 0x03) | |
745c0ce3 | 1688 | return true; |
d25e28ab JH |
1689 | |
1690 | /* Debug keys are insecure so don't store them persistently */ | |
1691 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1692 | return false; |
d25e28ab JH |
1693 | |
1694 | /* Changed combination key and there's no previous one */ | |
1695 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1696 | return false; |
d25e28ab JH |
1697 | |
1698 | /* Security mode 3 case */ | |
1699 | if (!conn) | |
745c0ce3 | 1700 | return true; |
d25e28ab JH |
1701 | |
1702 | /* Neither local nor remote side had no-bonding as requirement */ | |
1703 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1704 | return true; |
d25e28ab JH |
1705 | |
1706 | /* Local side had dedicated bonding as requirement */ | |
1707 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1708 | return true; |
d25e28ab JH |
1709 | |
1710 | /* Remote side had dedicated bonding as requirement */ | |
1711 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1712 | return true; |
d25e28ab JH |
1713 | |
1714 | /* If none of the above criteria match, then don't store the key | |
1715 | * persistently */ | |
745c0ce3 | 1716 | return false; |
d25e28ab JH |
1717 | } |
1718 | ||
c9839a11 | 1719 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1720 | { |
c9839a11 | 1721 | struct smp_ltk *k; |
75d262c2 | 1722 | |
c9839a11 VCG |
1723 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1724 | if (k->ediv != ediv || | |
a8c5fb1a | 1725 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1726 | continue; |
1727 | ||
c9839a11 | 1728 | return k; |
75d262c2 VCG |
1729 | } |
1730 | ||
1731 | return NULL; | |
1732 | } | |
75d262c2 | 1733 | |
c9839a11 | 1734 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1735 | u8 addr_type) |
75d262c2 | 1736 | { |
c9839a11 | 1737 | struct smp_ltk *k; |
75d262c2 | 1738 | |
c9839a11 VCG |
1739 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1740 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1741 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1742 | return k; |
1743 | ||
1744 | return NULL; | |
1745 | } | |
75d262c2 | 1746 | |
d25e28ab | 1747 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1748 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1749 | { |
1750 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1751 | u8 old_key_type; |
1752 | bool persistent; | |
55ed8ca1 JH |
1753 | |
1754 | old_key = hci_find_link_key(hdev, bdaddr); | |
1755 | if (old_key) { | |
1756 | old_key_type = old_key->type; | |
1757 | key = old_key; | |
1758 | } else { | |
12adcf3a | 1759 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1760 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1761 | if (!key) | |
1762 | return -ENOMEM; | |
1763 | list_add(&key->list, &hdev->link_keys); | |
1764 | } | |
1765 | ||
6ed93dc6 | 1766 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1767 | |
d25e28ab JH |
1768 | /* Some buggy controller combinations generate a changed |
1769 | * combination key for legacy pairing even when there's no | |
1770 | * previous key */ | |
1771 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1772 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1773 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1774 | if (conn) |
1775 | conn->key_type = type; | |
1776 | } | |
d25e28ab | 1777 | |
55ed8ca1 | 1778 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1779 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1780 | key->pin_len = pin_len; |
1781 | ||
b6020ba0 | 1782 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1783 | key->type = old_key_type; |
4748fed2 JH |
1784 | else |
1785 | key->type = type; | |
1786 | ||
4df378a1 JH |
1787 | if (!new_key) |
1788 | return 0; | |
1789 | ||
1790 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1791 | ||
744cf19e | 1792 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1793 | |
6ec5bcad VA |
1794 | if (conn) |
1795 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1796 | |
1797 | return 0; | |
1798 | } | |
1799 | ||
c9839a11 | 1800 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1801 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1802 | ediv, u8 rand[8]) |
75d262c2 | 1803 | { |
c9839a11 | 1804 | struct smp_ltk *key, *old_key; |
75d262c2 | 1805 | |
c9839a11 VCG |
1806 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1807 | return 0; | |
75d262c2 | 1808 | |
c9839a11 VCG |
1809 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1810 | if (old_key) | |
75d262c2 | 1811 | key = old_key; |
c9839a11 VCG |
1812 | else { |
1813 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1814 | if (!key) |
1815 | return -ENOMEM; | |
c9839a11 | 1816 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1817 | } |
1818 | ||
75d262c2 | 1819 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1820 | key->bdaddr_type = addr_type; |
1821 | memcpy(key->val, tk, sizeof(key->val)); | |
1822 | key->authenticated = authenticated; | |
1823 | key->ediv = ediv; | |
1824 | key->enc_size = enc_size; | |
1825 | key->type = type; | |
1826 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1827 | |
c9839a11 VCG |
1828 | if (!new_key) |
1829 | return 0; | |
75d262c2 | 1830 | |
261cc5aa VCG |
1831 | if (type & HCI_SMP_LTK) |
1832 | mgmt_new_ltk(hdev, key, 1); | |
1833 | ||
75d262c2 VCG |
1834 | return 0; |
1835 | } | |
1836 | ||
55ed8ca1 JH |
1837 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1838 | { | |
1839 | struct link_key *key; | |
1840 | ||
1841 | key = hci_find_link_key(hdev, bdaddr); | |
1842 | if (!key) | |
1843 | return -ENOENT; | |
1844 | ||
6ed93dc6 | 1845 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
1846 | |
1847 | list_del(&key->list); | |
1848 | kfree(key); | |
1849 | ||
1850 | return 0; | |
1851 | } | |
1852 | ||
b899efaf VCG |
1853 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1854 | { | |
1855 | struct smp_ltk *k, *tmp; | |
1856 | ||
1857 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1858 | if (bacmp(bdaddr, &k->bdaddr)) | |
1859 | continue; | |
1860 | ||
6ed93dc6 | 1861 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
1862 | |
1863 | list_del(&k->list); | |
1864 | kfree(k); | |
1865 | } | |
1866 | ||
1867 | return 0; | |
1868 | } | |
1869 | ||
6bd32326 | 1870 | /* HCI command timer function */ |
bda4f23a | 1871 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1872 | { |
1873 | struct hci_dev *hdev = (void *) arg; | |
1874 | ||
bda4f23a AE |
1875 | if (hdev->sent_cmd) { |
1876 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1877 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1878 | ||
1879 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1880 | } else { | |
1881 | BT_ERR("%s command tx timeout", hdev->name); | |
1882 | } | |
1883 | ||
6bd32326 | 1884 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1885 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1886 | } |
1887 | ||
2763eda6 | 1888 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1889 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1890 | { |
1891 | struct oob_data *data; | |
1892 | ||
1893 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1894 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1895 | return data; | |
1896 | ||
1897 | return NULL; | |
1898 | } | |
1899 | ||
1900 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1901 | { | |
1902 | struct oob_data *data; | |
1903 | ||
1904 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1905 | if (!data) | |
1906 | return -ENOENT; | |
1907 | ||
6ed93dc6 | 1908 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1909 | |
1910 | list_del(&data->list); | |
1911 | kfree(data); | |
1912 | ||
1913 | return 0; | |
1914 | } | |
1915 | ||
1916 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1917 | { | |
1918 | struct oob_data *data, *n; | |
1919 | ||
1920 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1921 | list_del(&data->list); | |
1922 | kfree(data); | |
1923 | } | |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1929 | u8 *randomizer) |
2763eda6 SJ |
1930 | { |
1931 | struct oob_data *data; | |
1932 | ||
1933 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1934 | ||
1935 | if (!data) { | |
1936 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1937 | if (!data) | |
1938 | return -ENOMEM; | |
1939 | ||
1940 | bacpy(&data->bdaddr, bdaddr); | |
1941 | list_add(&data->list, &hdev->remote_oob_data); | |
1942 | } | |
1943 | ||
1944 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1945 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1946 | ||
6ed93dc6 | 1947 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1948 | |
1949 | return 0; | |
1950 | } | |
1951 | ||
04124681 | 1952 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1953 | { |
8035ded4 | 1954 | struct bdaddr_list *b; |
b2a66aad | 1955 | |
8035ded4 | 1956 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1957 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1958 | return b; | |
b2a66aad AJ |
1959 | |
1960 | return NULL; | |
1961 | } | |
1962 | ||
1963 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1964 | { | |
1965 | struct list_head *p, *n; | |
1966 | ||
1967 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1968 | struct bdaddr_list *b; | |
1969 | ||
1970 | b = list_entry(p, struct bdaddr_list, list); | |
1971 | ||
1972 | list_del(p); | |
1973 | kfree(b); | |
1974 | } | |
1975 | ||
1976 | return 0; | |
1977 | } | |
1978 | ||
88c1fe4b | 1979 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1980 | { |
1981 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1982 | |
1983 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1984 | return -EBADF; | |
1985 | ||
5e762444 AJ |
1986 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1987 | return -EEXIST; | |
b2a66aad AJ |
1988 | |
1989 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1990 | if (!entry) |
1991 | return -ENOMEM; | |
b2a66aad AJ |
1992 | |
1993 | bacpy(&entry->bdaddr, bdaddr); | |
1994 | ||
1995 | list_add(&entry->list, &hdev->blacklist); | |
1996 | ||
88c1fe4b | 1997 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1998 | } |
1999 | ||
88c1fe4b | 2000 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2001 | { |
2002 | struct bdaddr_list *entry; | |
b2a66aad | 2003 | |
1ec918ce | 2004 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 2005 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
2006 | |
2007 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 2008 | if (!entry) |
5e762444 | 2009 | return -ENOENT; |
b2a66aad AJ |
2010 | |
2011 | list_del(&entry->list); | |
2012 | kfree(entry); | |
2013 | ||
88c1fe4b | 2014 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
2015 | } |
2016 | ||
4c87eaab | 2017 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2018 | { |
4c87eaab AG |
2019 | if (status) { |
2020 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2021 | |
4c87eaab AG |
2022 | hci_dev_lock(hdev); |
2023 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2024 | hci_dev_unlock(hdev); | |
2025 | return; | |
2026 | } | |
7ba8b4be AG |
2027 | } |
2028 | ||
4c87eaab | 2029 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2030 | { |
4c87eaab AG |
2031 | /* General inquiry access code (GIAC) */ |
2032 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2033 | struct hci_request req; | |
2034 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2035 | int err; |
2036 | ||
4c87eaab AG |
2037 | if (status) { |
2038 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2039 | return; | |
2040 | } | |
7ba8b4be | 2041 | |
4c87eaab AG |
2042 | switch (hdev->discovery.type) { |
2043 | case DISCOV_TYPE_LE: | |
2044 | hci_dev_lock(hdev); | |
2045 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2046 | hci_dev_unlock(hdev); | |
2047 | break; | |
7ba8b4be | 2048 | |
4c87eaab AG |
2049 | case DISCOV_TYPE_INTERLEAVED: |
2050 | hci_req_init(&req, hdev); | |
7ba8b4be | 2051 | |
4c87eaab AG |
2052 | memset(&cp, 0, sizeof(cp)); |
2053 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2054 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2055 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2056 | |
4c87eaab | 2057 | hci_dev_lock(hdev); |
7dbfac1d | 2058 | |
4c87eaab | 2059 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2060 | |
4c87eaab AG |
2061 | err = hci_req_run(&req, inquiry_complete); |
2062 | if (err) { | |
2063 | BT_ERR("Inquiry request failed: err %d", err); | |
2064 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2065 | } | |
7dbfac1d | 2066 | |
4c87eaab AG |
2067 | hci_dev_unlock(hdev); |
2068 | break; | |
7dbfac1d | 2069 | } |
7dbfac1d AG |
2070 | } |
2071 | ||
7ba8b4be AG |
2072 | static void le_scan_disable_work(struct work_struct *work) |
2073 | { | |
2074 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2075 | le_scan_disable.work); |
7ba8b4be | 2076 | struct hci_cp_le_set_scan_enable cp; |
4c87eaab AG |
2077 | struct hci_request req; |
2078 | int err; | |
7ba8b4be AG |
2079 | |
2080 | BT_DBG("%s", hdev->name); | |
2081 | ||
4c87eaab | 2082 | hci_req_init(&req, hdev); |
28b75a89 | 2083 | |
7ba8b4be | 2084 | memset(&cp, 0, sizeof(cp)); |
4c87eaab AG |
2085 | cp.enable = LE_SCAN_DISABLE; |
2086 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
28b75a89 | 2087 | |
4c87eaab AG |
2088 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2089 | if (err) | |
2090 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2091 | } |
2092 | ||
9be0dab7 DH |
2093 | /* Alloc HCI device */ |
2094 | struct hci_dev *hci_alloc_dev(void) | |
2095 | { | |
2096 | struct hci_dev *hdev; | |
2097 | ||
2098 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2099 | if (!hdev) | |
2100 | return NULL; | |
2101 | ||
b1b813d4 DH |
2102 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2103 | hdev->esco_type = (ESCO_HV1); | |
2104 | hdev->link_mode = (HCI_LM_ACCEPT); | |
2105 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2106 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2107 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2108 | |
b1b813d4 DH |
2109 | hdev->sniff_max_interval = 800; |
2110 | hdev->sniff_min_interval = 80; | |
2111 | ||
2112 | mutex_init(&hdev->lock); | |
2113 | mutex_init(&hdev->req_lock); | |
2114 | ||
2115 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2116 | INIT_LIST_HEAD(&hdev->blacklist); | |
2117 | INIT_LIST_HEAD(&hdev->uuids); | |
2118 | INIT_LIST_HEAD(&hdev->link_keys); | |
2119 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2120 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2121 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2122 | |
2123 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2124 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2125 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2126 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 2127 | |
b1b813d4 DH |
2128 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2129 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2130 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2131 | ||
b1b813d4 DH |
2132 | skb_queue_head_init(&hdev->rx_q); |
2133 | skb_queue_head_init(&hdev->cmd_q); | |
2134 | skb_queue_head_init(&hdev->raw_q); | |
2135 | ||
2136 | init_waitqueue_head(&hdev->req_wait_q); | |
2137 | ||
bda4f23a | 2138 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2139 | |
b1b813d4 DH |
2140 | hci_init_sysfs(hdev); |
2141 | discovery_init(hdev); | |
9be0dab7 DH |
2142 | |
2143 | return hdev; | |
2144 | } | |
2145 | EXPORT_SYMBOL(hci_alloc_dev); | |
2146 | ||
2147 | /* Free HCI device */ | |
2148 | void hci_free_dev(struct hci_dev *hdev) | |
2149 | { | |
9be0dab7 DH |
2150 | /* will free via device release */ |
2151 | put_device(&hdev->dev); | |
2152 | } | |
2153 | EXPORT_SYMBOL(hci_free_dev); | |
2154 | ||
1da177e4 LT |
2155 | /* Register HCI device */ |
2156 | int hci_register_dev(struct hci_dev *hdev) | |
2157 | { | |
b1b813d4 | 2158 | int id, error; |
1da177e4 | 2159 | |
010666a1 | 2160 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2161 | return -EINVAL; |
2162 | ||
08add513 MM |
2163 | /* Do not allow HCI_AMP devices to register at index 0, |
2164 | * so the index can be used as the AMP controller ID. | |
2165 | */ | |
3df92b31 SL |
2166 | switch (hdev->dev_type) { |
2167 | case HCI_BREDR: | |
2168 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2169 | break; | |
2170 | case HCI_AMP: | |
2171 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2172 | break; | |
2173 | default: | |
2174 | return -EINVAL; | |
1da177e4 | 2175 | } |
8e87d142 | 2176 | |
3df92b31 SL |
2177 | if (id < 0) |
2178 | return id; | |
2179 | ||
1da177e4 LT |
2180 | sprintf(hdev->name, "hci%d", id); |
2181 | hdev->id = id; | |
2d8b3a11 AE |
2182 | |
2183 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2184 | ||
d8537548 KC |
2185 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2186 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
2187 | if (!hdev->workqueue) { |
2188 | error = -ENOMEM; | |
2189 | goto err; | |
2190 | } | |
f48fd9c8 | 2191 | |
d8537548 KC |
2192 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2193 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
2194 | if (!hdev->req_workqueue) { |
2195 | destroy_workqueue(hdev->workqueue); | |
2196 | error = -ENOMEM; | |
2197 | goto err; | |
2198 | } | |
2199 | ||
33ca954d DH |
2200 | error = hci_add_sysfs(hdev); |
2201 | if (error < 0) | |
2202 | goto err_wqueue; | |
1da177e4 | 2203 | |
611b30f7 | 2204 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2205 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2206 | hdev); | |
611b30f7 MH |
2207 | if (hdev->rfkill) { |
2208 | if (rfkill_register(hdev->rfkill) < 0) { | |
2209 | rfkill_destroy(hdev->rfkill); | |
2210 | hdev->rfkill = NULL; | |
2211 | } | |
2212 | } | |
2213 | ||
5e130367 JH |
2214 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
2215 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
2216 | ||
a8b2d5c2 | 2217 | set_bit(HCI_SETUP, &hdev->dev_flags); |
ce2be9ac AE |
2218 | |
2219 | if (hdev->dev_type != HCI_AMP) | |
2220 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); | |
2221 | ||
fcee3377 GP |
2222 | write_lock(&hci_dev_list_lock); |
2223 | list_add(&hdev->list, &hci_dev_list); | |
2224 | write_unlock(&hci_dev_list_lock); | |
2225 | ||
1da177e4 | 2226 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2227 | hci_dev_hold(hdev); |
1da177e4 | 2228 | |
19202573 | 2229 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2230 | |
1da177e4 | 2231 | return id; |
f48fd9c8 | 2232 | |
33ca954d DH |
2233 | err_wqueue: |
2234 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2235 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2236 | err: |
3df92b31 | 2237 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 2238 | |
33ca954d | 2239 | return error; |
1da177e4 LT |
2240 | } |
2241 | EXPORT_SYMBOL(hci_register_dev); | |
2242 | ||
2243 | /* Unregister HCI device */ | |
59735631 | 2244 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2245 | { |
3df92b31 | 2246 | int i, id; |
ef222013 | 2247 | |
c13854ce | 2248 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2249 | |
94324962 JH |
2250 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2251 | ||
3df92b31 SL |
2252 | id = hdev->id; |
2253 | ||
f20d09d5 | 2254 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2255 | list_del(&hdev->list); |
f20d09d5 | 2256 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2257 | |
2258 | hci_dev_do_close(hdev); | |
2259 | ||
cd4c5391 | 2260 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2261 | kfree_skb(hdev->reassembly[i]); |
2262 | ||
b9b5ef18 GP |
2263 | cancel_work_sync(&hdev->power_on); |
2264 | ||
ab81cbf9 | 2265 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2266 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2267 | hci_dev_lock(hdev); |
744cf19e | 2268 | mgmt_index_removed(hdev); |
09fd0de5 | 2269 | hci_dev_unlock(hdev); |
56e5cb86 | 2270 | } |
ab81cbf9 | 2271 | |
2e58ef3e JH |
2272 | /* mgmt_index_removed should take care of emptying the |
2273 | * pending list */ | |
2274 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2275 | ||
1da177e4 LT |
2276 | hci_notify(hdev, HCI_DEV_UNREG); |
2277 | ||
611b30f7 MH |
2278 | if (hdev->rfkill) { |
2279 | rfkill_unregister(hdev->rfkill); | |
2280 | rfkill_destroy(hdev->rfkill); | |
2281 | } | |
2282 | ||
ce242970 | 2283 | hci_del_sysfs(hdev); |
147e2d59 | 2284 | |
f48fd9c8 | 2285 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2286 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2287 | |
09fd0de5 | 2288 | hci_dev_lock(hdev); |
e2e0cacb | 2289 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2290 | hci_uuids_clear(hdev); |
55ed8ca1 | 2291 | hci_link_keys_clear(hdev); |
b899efaf | 2292 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2293 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2294 | hci_dev_unlock(hdev); |
e2e0cacb | 2295 | |
dc946bd8 | 2296 | hci_dev_put(hdev); |
3df92b31 SL |
2297 | |
2298 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2299 | } |
2300 | EXPORT_SYMBOL(hci_unregister_dev); | |
2301 | ||
2302 | /* Suspend HCI device */ | |
2303 | int hci_suspend_dev(struct hci_dev *hdev) | |
2304 | { | |
2305 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2306 | return 0; | |
2307 | } | |
2308 | EXPORT_SYMBOL(hci_suspend_dev); | |
2309 | ||
2310 | /* Resume HCI device */ | |
2311 | int hci_resume_dev(struct hci_dev *hdev) | |
2312 | { | |
2313 | hci_notify(hdev, HCI_DEV_RESUME); | |
2314 | return 0; | |
2315 | } | |
2316 | EXPORT_SYMBOL(hci_resume_dev); | |
2317 | ||
76bca880 MH |
2318 | /* Receive frame from HCI drivers */ |
2319 | int hci_recv_frame(struct sk_buff *skb) | |
2320 | { | |
2321 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2322 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 2323 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2324 | kfree_skb(skb); |
2325 | return -ENXIO; | |
2326 | } | |
2327 | ||
d82603c6 | 2328 | /* Incoming skb */ |
76bca880 MH |
2329 | bt_cb(skb)->incoming = 1; |
2330 | ||
2331 | /* Time stamp */ | |
2332 | __net_timestamp(skb); | |
2333 | ||
76bca880 | 2334 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2335 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2336 | |
76bca880 MH |
2337 | return 0; |
2338 | } | |
2339 | EXPORT_SYMBOL(hci_recv_frame); | |
2340 | ||
33e882a5 | 2341 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2342 | int count, __u8 index) |
33e882a5 SS |
2343 | { |
2344 | int len = 0; | |
2345 | int hlen = 0; | |
2346 | int remain = count; | |
2347 | struct sk_buff *skb; | |
2348 | struct bt_skb_cb *scb; | |
2349 | ||
2350 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2351 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2352 | return -EILSEQ; |
2353 | ||
2354 | skb = hdev->reassembly[index]; | |
2355 | ||
2356 | if (!skb) { | |
2357 | switch (type) { | |
2358 | case HCI_ACLDATA_PKT: | |
2359 | len = HCI_MAX_FRAME_SIZE; | |
2360 | hlen = HCI_ACL_HDR_SIZE; | |
2361 | break; | |
2362 | case HCI_EVENT_PKT: | |
2363 | len = HCI_MAX_EVENT_SIZE; | |
2364 | hlen = HCI_EVENT_HDR_SIZE; | |
2365 | break; | |
2366 | case HCI_SCODATA_PKT: | |
2367 | len = HCI_MAX_SCO_SIZE; | |
2368 | hlen = HCI_SCO_HDR_SIZE; | |
2369 | break; | |
2370 | } | |
2371 | ||
1e429f38 | 2372 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2373 | if (!skb) |
2374 | return -ENOMEM; | |
2375 | ||
2376 | scb = (void *) skb->cb; | |
2377 | scb->expect = hlen; | |
2378 | scb->pkt_type = type; | |
2379 | ||
2380 | skb->dev = (void *) hdev; | |
2381 | hdev->reassembly[index] = skb; | |
2382 | } | |
2383 | ||
2384 | while (count) { | |
2385 | scb = (void *) skb->cb; | |
89bb46d0 | 2386 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2387 | |
2388 | memcpy(skb_put(skb, len), data, len); | |
2389 | ||
2390 | count -= len; | |
2391 | data += len; | |
2392 | scb->expect -= len; | |
2393 | remain = count; | |
2394 | ||
2395 | switch (type) { | |
2396 | case HCI_EVENT_PKT: | |
2397 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2398 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2399 | scb->expect = h->plen; | |
2400 | ||
2401 | if (skb_tailroom(skb) < scb->expect) { | |
2402 | kfree_skb(skb); | |
2403 | hdev->reassembly[index] = NULL; | |
2404 | return -ENOMEM; | |
2405 | } | |
2406 | } | |
2407 | break; | |
2408 | ||
2409 | case HCI_ACLDATA_PKT: | |
2410 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2411 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2412 | scb->expect = __le16_to_cpu(h->dlen); | |
2413 | ||
2414 | if (skb_tailroom(skb) < scb->expect) { | |
2415 | kfree_skb(skb); | |
2416 | hdev->reassembly[index] = NULL; | |
2417 | return -ENOMEM; | |
2418 | } | |
2419 | } | |
2420 | break; | |
2421 | ||
2422 | case HCI_SCODATA_PKT: | |
2423 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2424 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2425 | scb->expect = h->dlen; | |
2426 | ||
2427 | if (skb_tailroom(skb) < scb->expect) { | |
2428 | kfree_skb(skb); | |
2429 | hdev->reassembly[index] = NULL; | |
2430 | return -ENOMEM; | |
2431 | } | |
2432 | } | |
2433 | break; | |
2434 | } | |
2435 | ||
2436 | if (scb->expect == 0) { | |
2437 | /* Complete frame */ | |
2438 | ||
2439 | bt_cb(skb)->pkt_type = type; | |
2440 | hci_recv_frame(skb); | |
2441 | ||
2442 | hdev->reassembly[index] = NULL; | |
2443 | return remain; | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | return remain; | |
2448 | } | |
2449 | ||
ef222013 MH |
2450 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2451 | { | |
f39a3c06 SS |
2452 | int rem = 0; |
2453 | ||
ef222013 MH |
2454 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2455 | return -EILSEQ; | |
2456 | ||
da5f6c37 | 2457 | while (count) { |
1e429f38 | 2458 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2459 | if (rem < 0) |
2460 | return rem; | |
ef222013 | 2461 | |
f39a3c06 SS |
2462 | data += (count - rem); |
2463 | count = rem; | |
f81c6224 | 2464 | } |
ef222013 | 2465 | |
f39a3c06 | 2466 | return rem; |
ef222013 MH |
2467 | } |
2468 | EXPORT_SYMBOL(hci_recv_fragment); | |
2469 | ||
99811510 SS |
2470 | #define STREAM_REASSEMBLY 0 |
2471 | ||
2472 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2473 | { | |
2474 | int type; | |
2475 | int rem = 0; | |
2476 | ||
da5f6c37 | 2477 | while (count) { |
99811510 SS |
2478 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2479 | ||
2480 | if (!skb) { | |
2481 | struct { char type; } *pkt; | |
2482 | ||
2483 | /* Start of the frame */ | |
2484 | pkt = data; | |
2485 | type = pkt->type; | |
2486 | ||
2487 | data++; | |
2488 | count--; | |
2489 | } else | |
2490 | type = bt_cb(skb)->pkt_type; | |
2491 | ||
1e429f38 | 2492 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2493 | STREAM_REASSEMBLY); |
99811510 SS |
2494 | if (rem < 0) |
2495 | return rem; | |
2496 | ||
2497 | data += (count - rem); | |
2498 | count = rem; | |
f81c6224 | 2499 | } |
99811510 SS |
2500 | |
2501 | return rem; | |
2502 | } | |
2503 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2504 | ||
1da177e4 LT |
2505 | /* ---- Interface to upper protocols ---- */ |
2506 | ||
1da177e4 LT |
2507 | int hci_register_cb(struct hci_cb *cb) |
2508 | { | |
2509 | BT_DBG("%p name %s", cb, cb->name); | |
2510 | ||
f20d09d5 | 2511 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2512 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2513 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2514 | |
2515 | return 0; | |
2516 | } | |
2517 | EXPORT_SYMBOL(hci_register_cb); | |
2518 | ||
2519 | int hci_unregister_cb(struct hci_cb *cb) | |
2520 | { | |
2521 | BT_DBG("%p name %s", cb, cb->name); | |
2522 | ||
f20d09d5 | 2523 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2524 | list_del(&cb->list); |
f20d09d5 | 2525 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2526 | |
2527 | return 0; | |
2528 | } | |
2529 | EXPORT_SYMBOL(hci_unregister_cb); | |
2530 | ||
2531 | static int hci_send_frame(struct sk_buff *skb) | |
2532 | { | |
2533 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2534 | ||
2535 | if (!hdev) { | |
2536 | kfree_skb(skb); | |
2537 | return -ENODEV; | |
2538 | } | |
2539 | ||
0d48d939 | 2540 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2541 | |
cd82e61c MH |
2542 | /* Time stamp */ |
2543 | __net_timestamp(skb); | |
1da177e4 | 2544 | |
cd82e61c MH |
2545 | /* Send copy to monitor */ |
2546 | hci_send_to_monitor(hdev, skb); | |
2547 | ||
2548 | if (atomic_read(&hdev->promisc)) { | |
2549 | /* Send copy to the sockets */ | |
470fe1b5 | 2550 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2551 | } |
2552 | ||
2553 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2554 | skb_orphan(skb); | |
2555 | ||
2556 | return hdev->send(skb); | |
2557 | } | |
2558 | ||
3119ae95 JH |
2559 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2560 | { | |
2561 | skb_queue_head_init(&req->cmd_q); | |
2562 | req->hdev = hdev; | |
5d73e034 | 2563 | req->err = 0; |
3119ae95 JH |
2564 | } |
2565 | ||
2566 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2567 | { | |
2568 | struct hci_dev *hdev = req->hdev; | |
2569 | struct sk_buff *skb; | |
2570 | unsigned long flags; | |
2571 | ||
2572 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2573 | ||
5d73e034 AG |
2574 | /* If an error occured during request building, remove all HCI |
2575 | * commands queued on the HCI request queue. | |
2576 | */ | |
2577 | if (req->err) { | |
2578 | skb_queue_purge(&req->cmd_q); | |
2579 | return req->err; | |
2580 | } | |
2581 | ||
3119ae95 JH |
2582 | /* Do not allow empty requests */ |
2583 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2584 | return -ENODATA; |
3119ae95 JH |
2585 | |
2586 | skb = skb_peek_tail(&req->cmd_q); | |
2587 | bt_cb(skb)->req.complete = complete; | |
2588 | ||
2589 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2590 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2591 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2592 | ||
2593 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2594 | ||
2595 | return 0; | |
2596 | } | |
2597 | ||
1ca3a9d0 | 2598 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 2599 | u32 plen, const void *param) |
1da177e4 LT |
2600 | { |
2601 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2602 | struct hci_command_hdr *hdr; | |
2603 | struct sk_buff *skb; | |
2604 | ||
1da177e4 | 2605 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2606 | if (!skb) |
2607 | return NULL; | |
1da177e4 LT |
2608 | |
2609 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2610 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2611 | hdr->plen = plen; |
2612 | ||
2613 | if (plen) | |
2614 | memcpy(skb_put(skb, plen), param, plen); | |
2615 | ||
2616 | BT_DBG("skb len %d", skb->len); | |
2617 | ||
0d48d939 | 2618 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2619 | skb->dev = (void *) hdev; |
c78ae283 | 2620 | |
1ca3a9d0 JH |
2621 | return skb; |
2622 | } | |
2623 | ||
2624 | /* Send HCI command */ | |
07dc93dd JH |
2625 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2626 | const void *param) | |
1ca3a9d0 JH |
2627 | { |
2628 | struct sk_buff *skb; | |
2629 | ||
2630 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2631 | ||
2632 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2633 | if (!skb) { | |
2634 | BT_ERR("%s no memory for command", hdev->name); | |
2635 | return -ENOMEM; | |
2636 | } | |
2637 | ||
11714b3d JH |
2638 | /* Stand-alone HCI commands must be flaged as |
2639 | * single-command requests. | |
2640 | */ | |
2641 | bt_cb(skb)->req.start = true; | |
2642 | ||
1da177e4 | 2643 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2644 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2645 | |
2646 | return 0; | |
2647 | } | |
1da177e4 | 2648 | |
71c76a17 | 2649 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
2650 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
2651 | const void *param, u8 event) | |
71c76a17 JH |
2652 | { |
2653 | struct hci_dev *hdev = req->hdev; | |
2654 | struct sk_buff *skb; | |
2655 | ||
2656 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2657 | ||
34739c1e AG |
2658 | /* If an error occured during request building, there is no point in |
2659 | * queueing the HCI command. We can simply return. | |
2660 | */ | |
2661 | if (req->err) | |
2662 | return; | |
2663 | ||
71c76a17 JH |
2664 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2665 | if (!skb) { | |
5d73e034 AG |
2666 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2667 | hdev->name, opcode); | |
2668 | req->err = -ENOMEM; | |
e348fe6b | 2669 | return; |
71c76a17 JH |
2670 | } |
2671 | ||
2672 | if (skb_queue_empty(&req->cmd_q)) | |
2673 | bt_cb(skb)->req.start = true; | |
2674 | ||
02350a72 JH |
2675 | bt_cb(skb)->req.event = event; |
2676 | ||
71c76a17 | 2677 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2678 | } |
2679 | ||
07dc93dd JH |
2680 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
2681 | const void *param) | |
02350a72 JH |
2682 | { |
2683 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2684 | } | |
2685 | ||
1da177e4 | 2686 | /* Get data from the previously sent command */ |
a9de9248 | 2687 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2688 | { |
2689 | struct hci_command_hdr *hdr; | |
2690 | ||
2691 | if (!hdev->sent_cmd) | |
2692 | return NULL; | |
2693 | ||
2694 | hdr = (void *) hdev->sent_cmd->data; | |
2695 | ||
a9de9248 | 2696 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2697 | return NULL; |
2698 | ||
f0e09510 | 2699 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2700 | |
2701 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2702 | } | |
2703 | ||
2704 | /* Send ACL data */ | |
2705 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2706 | { | |
2707 | struct hci_acl_hdr *hdr; | |
2708 | int len = skb->len; | |
2709 | ||
badff6d0 ACM |
2710 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2711 | skb_reset_transport_header(skb); | |
9c70220b | 2712 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2713 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2714 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2715 | } |
2716 | ||
ee22be7e | 2717 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2718 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2719 | { |
ee22be7e | 2720 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2721 | struct hci_dev *hdev = conn->hdev; |
2722 | struct sk_buff *list; | |
2723 | ||
087bfd99 GP |
2724 | skb->len = skb_headlen(skb); |
2725 | skb->data_len = 0; | |
2726 | ||
2727 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2728 | |
2729 | switch (hdev->dev_type) { | |
2730 | case HCI_BREDR: | |
2731 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2732 | break; | |
2733 | case HCI_AMP: | |
2734 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2735 | break; | |
2736 | default: | |
2737 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2738 | return; | |
2739 | } | |
087bfd99 | 2740 | |
70f23020 AE |
2741 | list = skb_shinfo(skb)->frag_list; |
2742 | if (!list) { | |
1da177e4 LT |
2743 | /* Non fragmented */ |
2744 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2745 | ||
73d80deb | 2746 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2747 | } else { |
2748 | /* Fragmented */ | |
2749 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2750 | ||
2751 | skb_shinfo(skb)->frag_list = NULL; | |
2752 | ||
2753 | /* Queue all fragments atomically */ | |
af3e6359 | 2754 | spin_lock(&queue->lock); |
1da177e4 | 2755 | |
73d80deb | 2756 | __skb_queue_tail(queue, skb); |
e702112f AE |
2757 | |
2758 | flags &= ~ACL_START; | |
2759 | flags |= ACL_CONT; | |
1da177e4 LT |
2760 | do { |
2761 | skb = list; list = list->next; | |
8e87d142 | 2762 | |
1da177e4 | 2763 | skb->dev = (void *) hdev; |
0d48d939 | 2764 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2765 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2766 | |
2767 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2768 | ||
73d80deb | 2769 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2770 | } while (list); |
2771 | ||
af3e6359 | 2772 | spin_unlock(&queue->lock); |
1da177e4 | 2773 | } |
73d80deb LAD |
2774 | } |
2775 | ||
2776 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2777 | { | |
ee22be7e | 2778 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2779 | |
f0e09510 | 2780 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb LAD |
2781 | |
2782 | skb->dev = (void *) hdev; | |
73d80deb | 2783 | |
ee22be7e | 2784 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2785 | |
3eff45ea | 2786 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2787 | } |
1da177e4 LT |
2788 | |
2789 | /* Send SCO data */ | |
0d861d8b | 2790 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2791 | { |
2792 | struct hci_dev *hdev = conn->hdev; | |
2793 | struct hci_sco_hdr hdr; | |
2794 | ||
2795 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2796 | ||
aca3192c | 2797 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2798 | hdr.dlen = skb->len; |
2799 | ||
badff6d0 ACM |
2800 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2801 | skb_reset_transport_header(skb); | |
9c70220b | 2802 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2803 | |
2804 | skb->dev = (void *) hdev; | |
0d48d939 | 2805 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2806 | |
1da177e4 | 2807 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2808 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2809 | } |
1da177e4 LT |
2810 | |
2811 | /* ---- HCI TX task (outgoing data) ---- */ | |
2812 | ||
2813 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2814 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2815 | int *quote) | |
1da177e4 LT |
2816 | { |
2817 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2818 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2819 | unsigned int num = 0, min = ~0; |
1da177e4 | 2820 | |
8e87d142 | 2821 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2822 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2823 | |
2824 | rcu_read_lock(); | |
2825 | ||
2826 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2827 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2828 | continue; |
769be974 MH |
2829 | |
2830 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2831 | continue; | |
2832 | ||
1da177e4 LT |
2833 | num++; |
2834 | ||
2835 | if (c->sent < min) { | |
2836 | min = c->sent; | |
2837 | conn = c; | |
2838 | } | |
52087a79 LAD |
2839 | |
2840 | if (hci_conn_num(hdev, type) == num) | |
2841 | break; | |
1da177e4 LT |
2842 | } |
2843 | ||
bf4c6325 GP |
2844 | rcu_read_unlock(); |
2845 | ||
1da177e4 | 2846 | if (conn) { |
6ed58ec5 VT |
2847 | int cnt, q; |
2848 | ||
2849 | switch (conn->type) { | |
2850 | case ACL_LINK: | |
2851 | cnt = hdev->acl_cnt; | |
2852 | break; | |
2853 | case SCO_LINK: | |
2854 | case ESCO_LINK: | |
2855 | cnt = hdev->sco_cnt; | |
2856 | break; | |
2857 | case LE_LINK: | |
2858 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2859 | break; | |
2860 | default: | |
2861 | cnt = 0; | |
2862 | BT_ERR("Unknown link type"); | |
2863 | } | |
2864 | ||
2865 | q = cnt / num; | |
1da177e4 LT |
2866 | *quote = q ? q : 1; |
2867 | } else | |
2868 | *quote = 0; | |
2869 | ||
2870 | BT_DBG("conn %p quote %d", conn, *quote); | |
2871 | return conn; | |
2872 | } | |
2873 | ||
6039aa73 | 2874 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2875 | { |
2876 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2877 | struct hci_conn *c; |
1da177e4 | 2878 | |
bae1f5d9 | 2879 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2880 | |
bf4c6325 GP |
2881 | rcu_read_lock(); |
2882 | ||
1da177e4 | 2883 | /* Kill stalled connections */ |
bf4c6325 | 2884 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 2885 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
2886 | BT_ERR("%s killing stalled connection %pMR", |
2887 | hdev->name, &c->dst); | |
bed71748 | 2888 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2889 | } |
2890 | } | |
bf4c6325 GP |
2891 | |
2892 | rcu_read_unlock(); | |
1da177e4 LT |
2893 | } |
2894 | ||
6039aa73 GP |
2895 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2896 | int *quote) | |
1da177e4 | 2897 | { |
73d80deb LAD |
2898 | struct hci_conn_hash *h = &hdev->conn_hash; |
2899 | struct hci_chan *chan = NULL; | |
abc5de8f | 2900 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2901 | struct hci_conn *conn; |
73d80deb LAD |
2902 | int cnt, q, conn_num = 0; |
2903 | ||
2904 | BT_DBG("%s", hdev->name); | |
2905 | ||
bf4c6325 GP |
2906 | rcu_read_lock(); |
2907 | ||
2908 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2909 | struct hci_chan *tmp; |
2910 | ||
2911 | if (conn->type != type) | |
2912 | continue; | |
2913 | ||
2914 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2915 | continue; | |
2916 | ||
2917 | conn_num++; | |
2918 | ||
8192edef | 2919 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2920 | struct sk_buff *skb; |
2921 | ||
2922 | if (skb_queue_empty(&tmp->data_q)) | |
2923 | continue; | |
2924 | ||
2925 | skb = skb_peek(&tmp->data_q); | |
2926 | if (skb->priority < cur_prio) | |
2927 | continue; | |
2928 | ||
2929 | if (skb->priority > cur_prio) { | |
2930 | num = 0; | |
2931 | min = ~0; | |
2932 | cur_prio = skb->priority; | |
2933 | } | |
2934 | ||
2935 | num++; | |
2936 | ||
2937 | if (conn->sent < min) { | |
2938 | min = conn->sent; | |
2939 | chan = tmp; | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | if (hci_conn_num(hdev, type) == conn_num) | |
2944 | break; | |
2945 | } | |
2946 | ||
bf4c6325 GP |
2947 | rcu_read_unlock(); |
2948 | ||
73d80deb LAD |
2949 | if (!chan) |
2950 | return NULL; | |
2951 | ||
2952 | switch (chan->conn->type) { | |
2953 | case ACL_LINK: | |
2954 | cnt = hdev->acl_cnt; | |
2955 | break; | |
bd1eb66b AE |
2956 | case AMP_LINK: |
2957 | cnt = hdev->block_cnt; | |
2958 | break; | |
73d80deb LAD |
2959 | case SCO_LINK: |
2960 | case ESCO_LINK: | |
2961 | cnt = hdev->sco_cnt; | |
2962 | break; | |
2963 | case LE_LINK: | |
2964 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2965 | break; | |
2966 | default: | |
2967 | cnt = 0; | |
2968 | BT_ERR("Unknown link type"); | |
2969 | } | |
2970 | ||
2971 | q = cnt / num; | |
2972 | *quote = q ? q : 1; | |
2973 | BT_DBG("chan %p quote %d", chan, *quote); | |
2974 | return chan; | |
2975 | } | |
2976 | ||
02b20f0b LAD |
2977 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2978 | { | |
2979 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2980 | struct hci_conn *conn; | |
2981 | int num = 0; | |
2982 | ||
2983 | BT_DBG("%s", hdev->name); | |
2984 | ||
bf4c6325 GP |
2985 | rcu_read_lock(); |
2986 | ||
2987 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2988 | struct hci_chan *chan; |
2989 | ||
2990 | if (conn->type != type) | |
2991 | continue; | |
2992 | ||
2993 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2994 | continue; | |
2995 | ||
2996 | num++; | |
2997 | ||
8192edef | 2998 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2999 | struct sk_buff *skb; |
3000 | ||
3001 | if (chan->sent) { | |
3002 | chan->sent = 0; | |
3003 | continue; | |
3004 | } | |
3005 | ||
3006 | if (skb_queue_empty(&chan->data_q)) | |
3007 | continue; | |
3008 | ||
3009 | skb = skb_peek(&chan->data_q); | |
3010 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3011 | continue; | |
3012 | ||
3013 | skb->priority = HCI_PRIO_MAX - 1; | |
3014 | ||
3015 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3016 | skb->priority); |
02b20f0b LAD |
3017 | } |
3018 | ||
3019 | if (hci_conn_num(hdev, type) == num) | |
3020 | break; | |
3021 | } | |
bf4c6325 GP |
3022 | |
3023 | rcu_read_unlock(); | |
3024 | ||
02b20f0b LAD |
3025 | } |
3026 | ||
b71d385a AE |
3027 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3028 | { | |
3029 | /* Calculate count of blocks used by this packet */ | |
3030 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3031 | } | |
3032 | ||
6039aa73 | 3033 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3034 | { |
1da177e4 LT |
3035 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3036 | /* ACL tx timeout must be longer than maximum | |
3037 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3038 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3039 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3040 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3041 | } |
63d2bc1b | 3042 | } |
1da177e4 | 3043 | |
6039aa73 | 3044 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3045 | { |
3046 | unsigned int cnt = hdev->acl_cnt; | |
3047 | struct hci_chan *chan; | |
3048 | struct sk_buff *skb; | |
3049 | int quote; | |
3050 | ||
3051 | __check_timeout(hdev, cnt); | |
04837f64 | 3052 | |
73d80deb | 3053 | while (hdev->acl_cnt && |
a8c5fb1a | 3054 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3055 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3056 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3057 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3058 | skb->len, skb->priority); |
73d80deb | 3059 | |
ec1cce24 LAD |
3060 | /* Stop if priority has changed */ |
3061 | if (skb->priority < priority) | |
3062 | break; | |
3063 | ||
3064 | skb = skb_dequeue(&chan->data_q); | |
3065 | ||
73d80deb | 3066 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3067 | bt_cb(skb)->force_active); |
04837f64 | 3068 | |
1da177e4 LT |
3069 | hci_send_frame(skb); |
3070 | hdev->acl_last_tx = jiffies; | |
3071 | ||
3072 | hdev->acl_cnt--; | |
73d80deb LAD |
3073 | chan->sent++; |
3074 | chan->conn->sent++; | |
1da177e4 LT |
3075 | } |
3076 | } | |
02b20f0b LAD |
3077 | |
3078 | if (cnt != hdev->acl_cnt) | |
3079 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3080 | } |
3081 | ||
6039aa73 | 3082 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3083 | { |
63d2bc1b | 3084 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3085 | struct hci_chan *chan; |
3086 | struct sk_buff *skb; | |
3087 | int quote; | |
bd1eb66b | 3088 | u8 type; |
b71d385a | 3089 | |
63d2bc1b | 3090 | __check_timeout(hdev, cnt); |
b71d385a | 3091 | |
bd1eb66b AE |
3092 | BT_DBG("%s", hdev->name); |
3093 | ||
3094 | if (hdev->dev_type == HCI_AMP) | |
3095 | type = AMP_LINK; | |
3096 | else | |
3097 | type = ACL_LINK; | |
3098 | ||
b71d385a | 3099 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3100 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3101 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3102 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3103 | int blocks; | |
3104 | ||
3105 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3106 | skb->len, skb->priority); |
b71d385a AE |
3107 | |
3108 | /* Stop if priority has changed */ | |
3109 | if (skb->priority < priority) | |
3110 | break; | |
3111 | ||
3112 | skb = skb_dequeue(&chan->data_q); | |
3113 | ||
3114 | blocks = __get_blocks(hdev, skb); | |
3115 | if (blocks > hdev->block_cnt) | |
3116 | return; | |
3117 | ||
3118 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3119 | bt_cb(skb)->force_active); |
b71d385a AE |
3120 | |
3121 | hci_send_frame(skb); | |
3122 | hdev->acl_last_tx = jiffies; | |
3123 | ||
3124 | hdev->block_cnt -= blocks; | |
3125 | quote -= blocks; | |
3126 | ||
3127 | chan->sent += blocks; | |
3128 | chan->conn->sent += blocks; | |
3129 | } | |
3130 | } | |
3131 | ||
3132 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3133 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3134 | } |
3135 | ||
6039aa73 | 3136 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3137 | { |
3138 | BT_DBG("%s", hdev->name); | |
3139 | ||
bd1eb66b AE |
3140 | /* No ACL link over BR/EDR controller */ |
3141 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3142 | return; | |
3143 | ||
3144 | /* No AMP link over AMP controller */ | |
3145 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3146 | return; |
3147 | ||
3148 | switch (hdev->flow_ctl_mode) { | |
3149 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3150 | hci_sched_acl_pkt(hdev); | |
3151 | break; | |
3152 | ||
3153 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3154 | hci_sched_acl_blk(hdev); | |
3155 | break; | |
3156 | } | |
3157 | } | |
3158 | ||
1da177e4 | 3159 | /* Schedule SCO */ |
6039aa73 | 3160 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3161 | { |
3162 | struct hci_conn *conn; | |
3163 | struct sk_buff *skb; | |
3164 | int quote; | |
3165 | ||
3166 | BT_DBG("%s", hdev->name); | |
3167 | ||
52087a79 LAD |
3168 | if (!hci_conn_num(hdev, SCO_LINK)) |
3169 | return; | |
3170 | ||
1da177e4 LT |
3171 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3172 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3173 | BT_DBG("skb %p len %d", skb, skb->len); | |
3174 | hci_send_frame(skb); | |
3175 | ||
3176 | conn->sent++; | |
3177 | if (conn->sent == ~0) | |
3178 | conn->sent = 0; | |
3179 | } | |
3180 | } | |
3181 | } | |
3182 | ||
6039aa73 | 3183 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3184 | { |
3185 | struct hci_conn *conn; | |
3186 | struct sk_buff *skb; | |
3187 | int quote; | |
3188 | ||
3189 | BT_DBG("%s", hdev->name); | |
3190 | ||
52087a79 LAD |
3191 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3192 | return; | |
3193 | ||
8fc9ced3 GP |
3194 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3195 | "e))) { | |
b6a0dc82 MH |
3196 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3197 | BT_DBG("skb %p len %d", skb, skb->len); | |
3198 | hci_send_frame(skb); | |
3199 | ||
3200 | conn->sent++; | |
3201 | if (conn->sent == ~0) | |
3202 | conn->sent = 0; | |
3203 | } | |
3204 | } | |
3205 | } | |
3206 | ||
6039aa73 | 3207 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3208 | { |
73d80deb | 3209 | struct hci_chan *chan; |
6ed58ec5 | 3210 | struct sk_buff *skb; |
02b20f0b | 3211 | int quote, cnt, tmp; |
6ed58ec5 VT |
3212 | |
3213 | BT_DBG("%s", hdev->name); | |
3214 | ||
52087a79 LAD |
3215 | if (!hci_conn_num(hdev, LE_LINK)) |
3216 | return; | |
3217 | ||
6ed58ec5 VT |
3218 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3219 | /* LE tx timeout must be longer than maximum | |
3220 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3221 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3222 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3223 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3224 | } |
3225 | ||
3226 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3227 | tmp = cnt; |
73d80deb | 3228 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3229 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3230 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3231 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3232 | skb->len, skb->priority); |
6ed58ec5 | 3233 | |
ec1cce24 LAD |
3234 | /* Stop if priority has changed */ |
3235 | if (skb->priority < priority) | |
3236 | break; | |
3237 | ||
3238 | skb = skb_dequeue(&chan->data_q); | |
3239 | ||
6ed58ec5 VT |
3240 | hci_send_frame(skb); |
3241 | hdev->le_last_tx = jiffies; | |
3242 | ||
3243 | cnt--; | |
73d80deb LAD |
3244 | chan->sent++; |
3245 | chan->conn->sent++; | |
6ed58ec5 VT |
3246 | } |
3247 | } | |
73d80deb | 3248 | |
6ed58ec5 VT |
3249 | if (hdev->le_pkts) |
3250 | hdev->le_cnt = cnt; | |
3251 | else | |
3252 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3253 | |
3254 | if (cnt != tmp) | |
3255 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3256 | } |
3257 | ||
3eff45ea | 3258 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3259 | { |
3eff45ea | 3260 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3261 | struct sk_buff *skb; |
3262 | ||
6ed58ec5 | 3263 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3264 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
3265 | |
3266 | /* Schedule queues and send stuff to HCI driver */ | |
3267 | ||
3268 | hci_sched_acl(hdev); | |
3269 | ||
3270 | hci_sched_sco(hdev); | |
3271 | ||
b6a0dc82 MH |
3272 | hci_sched_esco(hdev); |
3273 | ||
6ed58ec5 VT |
3274 | hci_sched_le(hdev); |
3275 | ||
1da177e4 LT |
3276 | /* Send next queued raw (unknown type) packet */ |
3277 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
3278 | hci_send_frame(skb); | |
1da177e4 LT |
3279 | } |
3280 | ||
25985edc | 3281 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3282 | |
3283 | /* ACL data packet */ | |
6039aa73 | 3284 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3285 | { |
3286 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3287 | struct hci_conn *conn; | |
3288 | __u16 handle, flags; | |
3289 | ||
3290 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3291 | ||
3292 | handle = __le16_to_cpu(hdr->handle); | |
3293 | flags = hci_flags(handle); | |
3294 | handle = hci_handle(handle); | |
3295 | ||
f0e09510 | 3296 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3297 | handle, flags); |
1da177e4 LT |
3298 | |
3299 | hdev->stat.acl_rx++; | |
3300 | ||
3301 | hci_dev_lock(hdev); | |
3302 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3303 | hci_dev_unlock(hdev); | |
8e87d142 | 3304 | |
1da177e4 | 3305 | if (conn) { |
65983fc7 | 3306 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3307 | |
1da177e4 | 3308 | /* Send to upper protocol */ |
686ebf28 UF |
3309 | l2cap_recv_acldata(conn, skb, flags); |
3310 | return; | |
1da177e4 | 3311 | } else { |
8e87d142 | 3312 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3313 | hdev->name, handle); |
1da177e4 LT |
3314 | } |
3315 | ||
3316 | kfree_skb(skb); | |
3317 | } | |
3318 | ||
3319 | /* SCO data packet */ | |
6039aa73 | 3320 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3321 | { |
3322 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3323 | struct hci_conn *conn; | |
3324 | __u16 handle; | |
3325 | ||
3326 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3327 | ||
3328 | handle = __le16_to_cpu(hdr->handle); | |
3329 | ||
f0e09510 | 3330 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3331 | |
3332 | hdev->stat.sco_rx++; | |
3333 | ||
3334 | hci_dev_lock(hdev); | |
3335 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3336 | hci_dev_unlock(hdev); | |
3337 | ||
3338 | if (conn) { | |
1da177e4 | 3339 | /* Send to upper protocol */ |
686ebf28 UF |
3340 | sco_recv_scodata(conn, skb); |
3341 | return; | |
1da177e4 | 3342 | } else { |
8e87d142 | 3343 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3344 | hdev->name, handle); |
1da177e4 LT |
3345 | } |
3346 | ||
3347 | kfree_skb(skb); | |
3348 | } | |
3349 | ||
9238f36a JH |
3350 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3351 | { | |
3352 | struct sk_buff *skb; | |
3353 | ||
3354 | skb = skb_peek(&hdev->cmd_q); | |
3355 | if (!skb) | |
3356 | return true; | |
3357 | ||
3358 | return bt_cb(skb)->req.start; | |
3359 | } | |
3360 | ||
42c6b129 JH |
3361 | static void hci_resend_last(struct hci_dev *hdev) |
3362 | { | |
3363 | struct hci_command_hdr *sent; | |
3364 | struct sk_buff *skb; | |
3365 | u16 opcode; | |
3366 | ||
3367 | if (!hdev->sent_cmd) | |
3368 | return; | |
3369 | ||
3370 | sent = (void *) hdev->sent_cmd->data; | |
3371 | opcode = __le16_to_cpu(sent->opcode); | |
3372 | if (opcode == HCI_OP_RESET) | |
3373 | return; | |
3374 | ||
3375 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3376 | if (!skb) | |
3377 | return; | |
3378 | ||
3379 | skb_queue_head(&hdev->cmd_q, skb); | |
3380 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3381 | } | |
3382 | ||
9238f36a JH |
3383 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3384 | { | |
3385 | hci_req_complete_t req_complete = NULL; | |
3386 | struct sk_buff *skb; | |
3387 | unsigned long flags; | |
3388 | ||
3389 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3390 | ||
42c6b129 JH |
3391 | /* If the completed command doesn't match the last one that was |
3392 | * sent we need to do special handling of it. | |
9238f36a | 3393 | */ |
42c6b129 JH |
3394 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3395 | /* Some CSR based controllers generate a spontaneous | |
3396 | * reset complete event during init and any pending | |
3397 | * command will never be completed. In such a case we | |
3398 | * need to resend whatever was the last sent | |
3399 | * command. | |
3400 | */ | |
3401 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3402 | hci_resend_last(hdev); | |
3403 | ||
9238f36a | 3404 | return; |
42c6b129 | 3405 | } |
9238f36a JH |
3406 | |
3407 | /* If the command succeeded and there's still more commands in | |
3408 | * this request the request is not yet complete. | |
3409 | */ | |
3410 | if (!status && !hci_req_is_complete(hdev)) | |
3411 | return; | |
3412 | ||
3413 | /* If this was the last command in a request the complete | |
3414 | * callback would be found in hdev->sent_cmd instead of the | |
3415 | * command queue (hdev->cmd_q). | |
3416 | */ | |
3417 | if (hdev->sent_cmd) { | |
3418 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
3419 | |
3420 | if (req_complete) { | |
3421 | /* We must set the complete callback to NULL to | |
3422 | * avoid calling the callback more than once if | |
3423 | * this function gets called again. | |
3424 | */ | |
3425 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
3426 | ||
9238f36a | 3427 | goto call_complete; |
53e21fbc | 3428 | } |
9238f36a JH |
3429 | } |
3430 | ||
3431 | /* Remove all pending commands belonging to this request */ | |
3432 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3433 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3434 | if (bt_cb(skb)->req.start) { | |
3435 | __skb_queue_head(&hdev->cmd_q, skb); | |
3436 | break; | |
3437 | } | |
3438 | ||
3439 | req_complete = bt_cb(skb)->req.complete; | |
3440 | kfree_skb(skb); | |
3441 | } | |
3442 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3443 | ||
3444 | call_complete: | |
3445 | if (req_complete) | |
3446 | req_complete(hdev, status); | |
3447 | } | |
3448 | ||
b78752cc | 3449 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3450 | { |
b78752cc | 3451 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3452 | struct sk_buff *skb; |
3453 | ||
3454 | BT_DBG("%s", hdev->name); | |
3455 | ||
1da177e4 | 3456 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3457 | /* Send copy to monitor */ |
3458 | hci_send_to_monitor(hdev, skb); | |
3459 | ||
1da177e4 LT |
3460 | if (atomic_read(&hdev->promisc)) { |
3461 | /* Send copy to the sockets */ | |
470fe1b5 | 3462 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3463 | } |
3464 | ||
3465 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
3466 | kfree_skb(skb); | |
3467 | continue; | |
3468 | } | |
3469 | ||
3470 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3471 | /* Don't process data packets in this states. */ | |
0d48d939 | 3472 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3473 | case HCI_ACLDATA_PKT: |
3474 | case HCI_SCODATA_PKT: | |
3475 | kfree_skb(skb); | |
3476 | continue; | |
3ff50b79 | 3477 | } |
1da177e4 LT |
3478 | } |
3479 | ||
3480 | /* Process frame */ | |
0d48d939 | 3481 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3482 | case HCI_EVENT_PKT: |
b78752cc | 3483 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3484 | hci_event_packet(hdev, skb); |
3485 | break; | |
3486 | ||
3487 | case HCI_ACLDATA_PKT: | |
3488 | BT_DBG("%s ACL data packet", hdev->name); | |
3489 | hci_acldata_packet(hdev, skb); | |
3490 | break; | |
3491 | ||
3492 | case HCI_SCODATA_PKT: | |
3493 | BT_DBG("%s SCO data packet", hdev->name); | |
3494 | hci_scodata_packet(hdev, skb); | |
3495 | break; | |
3496 | ||
3497 | default: | |
3498 | kfree_skb(skb); | |
3499 | break; | |
3500 | } | |
3501 | } | |
1da177e4 LT |
3502 | } |
3503 | ||
c347b765 | 3504 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3505 | { |
c347b765 | 3506 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3507 | struct sk_buff *skb; |
3508 | ||
2104786b AE |
3509 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3510 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3511 | |
1da177e4 | 3512 | /* Send queued commands */ |
5a08ecce AE |
3513 | if (atomic_read(&hdev->cmd_cnt)) { |
3514 | skb = skb_dequeue(&hdev->cmd_q); | |
3515 | if (!skb) | |
3516 | return; | |
3517 | ||
7585b97a | 3518 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3519 | |
70f23020 AE |
3520 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
3521 | if (hdev->sent_cmd) { | |
1da177e4 LT |
3522 | atomic_dec(&hdev->cmd_cnt); |
3523 | hci_send_frame(skb); | |
7bdb8a5c SJ |
3524 | if (test_bit(HCI_RESET, &hdev->flags)) |
3525 | del_timer(&hdev->cmd_timer); | |
3526 | else | |
3527 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3528 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3529 | } else { |
3530 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3531 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3532 | } |
3533 | } | |
3534 | } | |
2519a1fc | 3535 | |
31f7956c AG |
3536 | u8 bdaddr_to_le(u8 bdaddr_type) |
3537 | { | |
3538 | switch (bdaddr_type) { | |
3539 | case BDADDR_LE_PUBLIC: | |
3540 | return ADDR_LE_DEV_PUBLIC; | |
3541 | ||
3542 | default: | |
3543 | /* Fallback to LE Random address type */ | |
3544 | return ADDR_LE_DEV_RANDOM; | |
3545 | } | |
3546 | } |