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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 | 309 | |
f6996cfe MH |
310 | /* Read Local Supported Commands */ |
311 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
312 | ||
313 | /* Read Local Supported Features */ | |
314 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
315 | ||
6bcbc489 | 316 | /* Read Local AMP Info */ |
42c6b129 | 317 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
318 | |
319 | /* Read Data Blk size */ | |
42c6b129 | 320 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 321 | |
f38ba941 MH |
322 | /* Read Flow Control Mode */ |
323 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
324 | ||
7528ca1c MH |
325 | /* Read Location Data */ |
326 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
327 | } |
328 | ||
42c6b129 | 329 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 330 | { |
42c6b129 | 331 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
332 | |
333 | BT_DBG("%s %ld", hdev->name, opt); | |
334 | ||
11778716 AE |
335 | /* Reset */ |
336 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 337 | hci_reset_req(req, 0); |
11778716 | 338 | |
e61ef499 AE |
339 | switch (hdev->dev_type) { |
340 | case HCI_BREDR: | |
42c6b129 | 341 | bredr_init(req); |
e61ef499 AE |
342 | break; |
343 | ||
344 | case HCI_AMP: | |
42c6b129 | 345 | amp_init(req); |
e61ef499 AE |
346 | break; |
347 | ||
348 | default: | |
349 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
350 | break; | |
351 | } | |
e61ef499 AE |
352 | } |
353 | ||
42c6b129 | 354 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 355 | { |
4ca048e3 MH |
356 | struct hci_dev *hdev = req->hdev; |
357 | ||
2177bab5 JH |
358 | __le16 param; |
359 | __u8 flt_type; | |
360 | ||
361 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 362 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
363 | |
364 | /* Read Class of Device */ | |
42c6b129 | 365 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
366 | |
367 | /* Read Local Name */ | |
42c6b129 | 368 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
369 | |
370 | /* Read Voice Setting */ | |
42c6b129 | 371 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 372 | |
b4cb9fb2 MH |
373 | /* Read Number of Supported IAC */ |
374 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
375 | ||
4b836f39 MH |
376 | /* Read Current IAC LAP */ |
377 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
378 | ||
2177bab5 JH |
379 | /* Clear Event Filters */ |
380 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 381 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
382 | |
383 | /* Connection accept timeout ~20 secs */ | |
384 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 385 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 386 | |
4ca048e3 MH |
387 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
388 | * but it does not support page scan related HCI commands. | |
389 | */ | |
390 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
391 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
392 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
393 | } | |
2177bab5 JH |
394 | } |
395 | ||
42c6b129 | 396 | static void le_setup(struct hci_request *req) |
2177bab5 | 397 | { |
c73eee91 JH |
398 | struct hci_dev *hdev = req->hdev; |
399 | ||
2177bab5 | 400 | /* Read LE Buffer Size */ |
42c6b129 | 401 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
402 | |
403 | /* Read LE Local Supported Features */ | |
42c6b129 | 404 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
405 | |
406 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 407 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
408 | |
409 | /* Read LE White List Size */ | |
42c6b129 | 410 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
411 | |
412 | /* Read LE Supported States */ | |
42c6b129 | 413 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
414 | |
415 | /* LE-only controllers have LE implicitly enabled */ | |
416 | if (!lmp_bredr_capable(hdev)) | |
417 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
418 | } |
419 | ||
420 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
421 | { | |
422 | if (lmp_ext_inq_capable(hdev)) | |
423 | return 0x02; | |
424 | ||
425 | if (lmp_inq_rssi_capable(hdev)) | |
426 | return 0x01; | |
427 | ||
428 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
429 | hdev->lmp_subver == 0x0757) | |
430 | return 0x01; | |
431 | ||
432 | if (hdev->manufacturer == 15) { | |
433 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
434 | return 0x01; | |
435 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
436 | return 0x01; | |
437 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
438 | return 0x01; | |
439 | } | |
440 | ||
441 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
442 | hdev->lmp_subver == 0x1805) | |
443 | return 0x01; | |
444 | ||
445 | return 0x00; | |
446 | } | |
447 | ||
42c6b129 | 448 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
449 | { |
450 | u8 mode; | |
451 | ||
42c6b129 | 452 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 453 | |
42c6b129 | 454 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
455 | } |
456 | ||
42c6b129 | 457 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 458 | { |
42c6b129 JH |
459 | struct hci_dev *hdev = req->hdev; |
460 | ||
2177bab5 JH |
461 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
462 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
463 | * command otherwise. | |
464 | */ | |
465 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
466 | ||
467 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
468 | * any event mask for pre 1.2 devices. | |
469 | */ | |
470 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
471 | return; | |
472 | ||
473 | if (lmp_bredr_capable(hdev)) { | |
474 | events[4] |= 0x01; /* Flow Specification Complete */ | |
475 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
476 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
477 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
478 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
479 | } else { |
480 | /* Use a different default for LE-only devices */ | |
481 | memset(events, 0, sizeof(events)); | |
482 | events[0] |= 0x10; /* Disconnection Complete */ | |
483 | events[0] |= 0x80; /* Encryption Change */ | |
484 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
485 | events[1] |= 0x20; /* Command Complete */ | |
486 | events[1] |= 0x40; /* Command Status */ | |
487 | events[1] |= 0x80; /* Hardware Error */ | |
488 | events[2] |= 0x04; /* Number of Completed Packets */ | |
489 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
490 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
491 | } |
492 | ||
493 | if (lmp_inq_rssi_capable(hdev)) | |
494 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
495 | ||
496 | if (lmp_sniffsubr_capable(hdev)) | |
497 | events[5] |= 0x20; /* Sniff Subrating */ | |
498 | ||
499 | if (lmp_pause_enc_capable(hdev)) | |
500 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
501 | ||
502 | if (lmp_ext_inq_capable(hdev)) | |
503 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
504 | ||
505 | if (lmp_no_flush_capable(hdev)) | |
506 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
507 | ||
508 | if (lmp_lsto_capable(hdev)) | |
509 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
510 | ||
511 | if (lmp_ssp_capable(hdev)) { | |
512 | events[6] |= 0x01; /* IO Capability Request */ | |
513 | events[6] |= 0x02; /* IO Capability Response */ | |
514 | events[6] |= 0x04; /* User Confirmation Request */ | |
515 | events[6] |= 0x08; /* User Passkey Request */ | |
516 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
517 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
518 | events[7] |= 0x04; /* User Passkey Notification */ | |
519 | events[7] |= 0x08; /* Keypress Notification */ | |
520 | events[7] |= 0x10; /* Remote Host Supported | |
521 | * Features Notification | |
522 | */ | |
523 | } | |
524 | ||
525 | if (lmp_le_capable(hdev)) | |
526 | events[7] |= 0x20; /* LE Meta-Event */ | |
527 | ||
42c6b129 | 528 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
529 | |
530 | if (lmp_le_capable(hdev)) { | |
531 | memset(events, 0, sizeof(events)); | |
532 | events[0] = 0x1f; | |
42c6b129 JH |
533 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
534 | sizeof(events), events); | |
2177bab5 JH |
535 | } |
536 | } | |
537 | ||
42c6b129 | 538 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 539 | { |
42c6b129 JH |
540 | struct hci_dev *hdev = req->hdev; |
541 | ||
2177bab5 | 542 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 543 | bredr_setup(req); |
56f87901 JH |
544 | else |
545 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
546 | |
547 | if (lmp_le_capable(hdev)) | |
42c6b129 | 548 | le_setup(req); |
2177bab5 | 549 | |
42c6b129 | 550 | hci_setup_event_mask(req); |
2177bab5 | 551 | |
3f8e2d75 JH |
552 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
553 | * local supported commands HCI command. | |
554 | */ | |
555 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 556 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
557 | |
558 | if (lmp_ssp_capable(hdev)) { | |
559 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
560 | u8 mode = 0x01; | |
42c6b129 JH |
561 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
562 | sizeof(mode), &mode); | |
2177bab5 JH |
563 | } else { |
564 | struct hci_cp_write_eir cp; | |
565 | ||
566 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
567 | memset(&cp, 0, sizeof(cp)); | |
568 | ||
42c6b129 | 569 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
570 | } |
571 | } | |
572 | ||
573 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 574 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
575 | |
576 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 577 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
578 | |
579 | if (lmp_ext_feat_capable(hdev)) { | |
580 | struct hci_cp_read_local_ext_features cp; | |
581 | ||
582 | cp.page = 0x01; | |
42c6b129 JH |
583 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
584 | sizeof(cp), &cp); | |
2177bab5 JH |
585 | } |
586 | ||
587 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
588 | u8 enable = 1; | |
42c6b129 JH |
589 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
590 | &enable); | |
2177bab5 JH |
591 | } |
592 | } | |
593 | ||
42c6b129 | 594 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 595 | { |
42c6b129 | 596 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
597 | struct hci_cp_write_def_link_policy cp; |
598 | u16 link_policy = 0; | |
599 | ||
600 | if (lmp_rswitch_capable(hdev)) | |
601 | link_policy |= HCI_LP_RSWITCH; | |
602 | if (lmp_hold_capable(hdev)) | |
603 | link_policy |= HCI_LP_HOLD; | |
604 | if (lmp_sniff_capable(hdev)) | |
605 | link_policy |= HCI_LP_SNIFF; | |
606 | if (lmp_park_capable(hdev)) | |
607 | link_policy |= HCI_LP_PARK; | |
608 | ||
609 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 610 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
611 | } |
612 | ||
42c6b129 | 613 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 614 | { |
42c6b129 | 615 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
616 | struct hci_cp_write_le_host_supported cp; |
617 | ||
c73eee91 JH |
618 | /* LE-only devices do not support explicit enablement */ |
619 | if (!lmp_bredr_capable(hdev)) | |
620 | return; | |
621 | ||
2177bab5 JH |
622 | memset(&cp, 0, sizeof(cp)); |
623 | ||
624 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
625 | cp.le = 0x01; | |
626 | cp.simul = lmp_le_br_capable(hdev); | |
627 | } | |
628 | ||
629 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
630 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
631 | &cp); | |
2177bab5 JH |
632 | } |
633 | ||
d62e6d67 JH |
634 | static void hci_set_event_mask_page_2(struct hci_request *req) |
635 | { | |
636 | struct hci_dev *hdev = req->hdev; | |
637 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
638 | ||
639 | /* If Connectionless Slave Broadcast master role is supported | |
640 | * enable all necessary events for it. | |
641 | */ | |
642 | if (hdev->features[2][0] & 0x01) { | |
643 | events[1] |= 0x40; /* Triggered Clock Capture */ | |
644 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
645 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
646 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
647 | } | |
648 | ||
649 | /* If Connectionless Slave Broadcast slave role is supported | |
650 | * enable all necessary events for it. | |
651 | */ | |
652 | if (hdev->features[2][0] & 0x02) { | |
653 | events[2] |= 0x01; /* Synchronization Train Received */ | |
654 | events[2] |= 0x02; /* CSB Receive */ | |
655 | events[2] |= 0x04; /* CSB Timeout */ | |
656 | events[2] |= 0x08; /* Truncated Page Complete */ | |
657 | } | |
658 | ||
659 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); | |
660 | } | |
661 | ||
42c6b129 | 662 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 663 | { |
42c6b129 | 664 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 665 | u8 p; |
42c6b129 | 666 | |
b8f4e068 GP |
667 | /* Some Broadcom based Bluetooth controllers do not support the |
668 | * Delete Stored Link Key command. They are clearly indicating its | |
669 | * absence in the bit mask of supported commands. | |
670 | * | |
671 | * Check the supported commands and only if the the command is marked | |
672 | * as supported send it. If not supported assume that the controller | |
673 | * does not have actual support for stored link keys which makes this | |
674 | * command redundant anyway. | |
637b4cae | 675 | */ |
59f45d57 JH |
676 | if (hdev->commands[6] & 0x80) { |
677 | struct hci_cp_delete_stored_link_key cp; | |
678 | ||
679 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
680 | cp.delete_all = 0x01; | |
681 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
682 | sizeof(cp), &cp); | |
683 | } | |
684 | ||
2177bab5 | 685 | if (hdev->commands[5] & 0x10) |
42c6b129 | 686 | hci_setup_link_policy(req); |
2177bab5 | 687 | |
441ad2d0 | 688 | if (lmp_le_capable(hdev)) |
42c6b129 | 689 | hci_set_le_support(req); |
d2c5d77f JH |
690 | |
691 | /* Read features beyond page 1 if available */ | |
692 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
693 | struct hci_cp_read_local_ext_features cp; | |
694 | ||
695 | cp.page = p; | |
696 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
697 | sizeof(cp), &cp); | |
698 | } | |
2177bab5 JH |
699 | } |
700 | ||
5d4e7e8d JH |
701 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
702 | { | |
703 | struct hci_dev *hdev = req->hdev; | |
704 | ||
d62e6d67 JH |
705 | /* Set event mask page 2 if the HCI command for it is supported */ |
706 | if (hdev->commands[22] & 0x04) | |
707 | hci_set_event_mask_page_2(req); | |
708 | ||
5d4e7e8d JH |
709 | /* Check for Synchronization Train support */ |
710 | if (hdev->features[2][0] & 0x04) | |
711 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); | |
712 | } | |
713 | ||
2177bab5 JH |
714 | static int __hci_init(struct hci_dev *hdev) |
715 | { | |
716 | int err; | |
717 | ||
718 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
719 | if (err < 0) | |
720 | return err; | |
721 | ||
722 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
723 | * BR/EDR/LE type controllers. AMP controllers only need the | |
724 | * first stage init. | |
725 | */ | |
726 | if (hdev->dev_type != HCI_BREDR) | |
727 | return 0; | |
728 | ||
729 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
730 | if (err < 0) | |
731 | return err; | |
732 | ||
5d4e7e8d JH |
733 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
734 | if (err < 0) | |
735 | return err; | |
736 | ||
737 | return __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); | |
2177bab5 JH |
738 | } |
739 | ||
42c6b129 | 740 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
741 | { |
742 | __u8 scan = opt; | |
743 | ||
42c6b129 | 744 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
745 | |
746 | /* Inquiry and Page scans */ | |
42c6b129 | 747 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
748 | } |
749 | ||
42c6b129 | 750 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
751 | { |
752 | __u8 auth = opt; | |
753 | ||
42c6b129 | 754 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
755 | |
756 | /* Authentication */ | |
42c6b129 | 757 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
758 | } |
759 | ||
42c6b129 | 760 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
761 | { |
762 | __u8 encrypt = opt; | |
763 | ||
42c6b129 | 764 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 765 | |
e4e8e37c | 766 | /* Encryption */ |
42c6b129 | 767 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
768 | } |
769 | ||
42c6b129 | 770 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
771 | { |
772 | __le16 policy = cpu_to_le16(opt); | |
773 | ||
42c6b129 | 774 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
775 | |
776 | /* Default link policy */ | |
42c6b129 | 777 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
778 | } |
779 | ||
8e87d142 | 780 | /* Get HCI device by index. |
1da177e4 LT |
781 | * Device is held on return. */ |
782 | struct hci_dev *hci_dev_get(int index) | |
783 | { | |
8035ded4 | 784 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
785 | |
786 | BT_DBG("%d", index); | |
787 | ||
788 | if (index < 0) | |
789 | return NULL; | |
790 | ||
791 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 792 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
793 | if (d->id == index) { |
794 | hdev = hci_dev_hold(d); | |
795 | break; | |
796 | } | |
797 | } | |
798 | read_unlock(&hci_dev_list_lock); | |
799 | return hdev; | |
800 | } | |
1da177e4 LT |
801 | |
802 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 803 | |
30dc78e1 JH |
804 | bool hci_discovery_active(struct hci_dev *hdev) |
805 | { | |
806 | struct discovery_state *discov = &hdev->discovery; | |
807 | ||
6fbe195d | 808 | switch (discov->state) { |
343f935b | 809 | case DISCOVERY_FINDING: |
6fbe195d | 810 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
811 | return true; |
812 | ||
6fbe195d AG |
813 | default: |
814 | return false; | |
815 | } | |
30dc78e1 JH |
816 | } |
817 | ||
ff9ef578 JH |
818 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
819 | { | |
820 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
821 | ||
822 | if (hdev->discovery.state == state) | |
823 | return; | |
824 | ||
825 | switch (state) { | |
826 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
827 | if (hdev->discovery.state != DISCOVERY_STARTING) |
828 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
829 | break; |
830 | case DISCOVERY_STARTING: | |
831 | break; | |
343f935b | 832 | case DISCOVERY_FINDING: |
ff9ef578 JH |
833 | mgmt_discovering(hdev, 1); |
834 | break; | |
30dc78e1 JH |
835 | case DISCOVERY_RESOLVING: |
836 | break; | |
ff9ef578 JH |
837 | case DISCOVERY_STOPPING: |
838 | break; | |
839 | } | |
840 | ||
841 | hdev->discovery.state = state; | |
842 | } | |
843 | ||
1f9b9a5d | 844 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 845 | { |
30883512 | 846 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 847 | struct inquiry_entry *p, *n; |
1da177e4 | 848 | |
561aafbc JH |
849 | list_for_each_entry_safe(p, n, &cache->all, all) { |
850 | list_del(&p->all); | |
b57c1a56 | 851 | kfree(p); |
1da177e4 | 852 | } |
561aafbc JH |
853 | |
854 | INIT_LIST_HEAD(&cache->unknown); | |
855 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
856 | } |
857 | ||
a8c5fb1a GP |
858 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
859 | bdaddr_t *bdaddr) | |
1da177e4 | 860 | { |
30883512 | 861 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
862 | struct inquiry_entry *e; |
863 | ||
6ed93dc6 | 864 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 865 | |
561aafbc JH |
866 | list_for_each_entry(e, &cache->all, all) { |
867 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
868 | return e; | |
869 | } | |
870 | ||
871 | return NULL; | |
872 | } | |
873 | ||
874 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 875 | bdaddr_t *bdaddr) |
561aafbc | 876 | { |
30883512 | 877 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
878 | struct inquiry_entry *e; |
879 | ||
6ed93dc6 | 880 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
881 | |
882 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 883 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
884 | return e; |
885 | } | |
886 | ||
887 | return NULL; | |
1da177e4 LT |
888 | } |
889 | ||
30dc78e1 | 890 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
891 | bdaddr_t *bdaddr, |
892 | int state) | |
30dc78e1 JH |
893 | { |
894 | struct discovery_state *cache = &hdev->discovery; | |
895 | struct inquiry_entry *e; | |
896 | ||
6ed93dc6 | 897 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
898 | |
899 | list_for_each_entry(e, &cache->resolve, list) { | |
900 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
901 | return e; | |
902 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
903 | return e; | |
904 | } | |
905 | ||
906 | return NULL; | |
907 | } | |
908 | ||
a3d4e20a | 909 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 910 | struct inquiry_entry *ie) |
a3d4e20a JH |
911 | { |
912 | struct discovery_state *cache = &hdev->discovery; | |
913 | struct list_head *pos = &cache->resolve; | |
914 | struct inquiry_entry *p; | |
915 | ||
916 | list_del(&ie->list); | |
917 | ||
918 | list_for_each_entry(p, &cache->resolve, list) { | |
919 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 920 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
921 | break; |
922 | pos = &p->list; | |
923 | } | |
924 | ||
925 | list_add(&ie->list, pos); | |
926 | } | |
927 | ||
3175405b | 928 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 929 | bool name_known, bool *ssp) |
1da177e4 | 930 | { |
30883512 | 931 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 932 | struct inquiry_entry *ie; |
1da177e4 | 933 | |
6ed93dc6 | 934 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 935 | |
2b2fec4d SJ |
936 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
937 | ||
388fc8fa JH |
938 | if (ssp) |
939 | *ssp = data->ssp_mode; | |
940 | ||
70f23020 | 941 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 942 | if (ie) { |
388fc8fa JH |
943 | if (ie->data.ssp_mode && ssp) |
944 | *ssp = true; | |
945 | ||
a3d4e20a | 946 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 947 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
948 | ie->data.rssi = data->rssi; |
949 | hci_inquiry_cache_update_resolve(hdev, ie); | |
950 | } | |
951 | ||
561aafbc | 952 | goto update; |
a3d4e20a | 953 | } |
561aafbc JH |
954 | |
955 | /* Entry not in the cache. Add new one. */ | |
956 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
957 | if (!ie) | |
3175405b | 958 | return false; |
561aafbc JH |
959 | |
960 | list_add(&ie->all, &cache->all); | |
961 | ||
962 | if (name_known) { | |
963 | ie->name_state = NAME_KNOWN; | |
964 | } else { | |
965 | ie->name_state = NAME_NOT_KNOWN; | |
966 | list_add(&ie->list, &cache->unknown); | |
967 | } | |
70f23020 | 968 | |
561aafbc JH |
969 | update: |
970 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 971 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
972 | ie->name_state = NAME_KNOWN; |
973 | list_del(&ie->list); | |
1da177e4 LT |
974 | } |
975 | ||
70f23020 AE |
976 | memcpy(&ie->data, data, sizeof(*data)); |
977 | ie->timestamp = jiffies; | |
1da177e4 | 978 | cache->timestamp = jiffies; |
3175405b JH |
979 | |
980 | if (ie->name_state == NAME_NOT_KNOWN) | |
981 | return false; | |
982 | ||
983 | return true; | |
1da177e4 LT |
984 | } |
985 | ||
986 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
987 | { | |
30883512 | 988 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
989 | struct inquiry_info *info = (struct inquiry_info *) buf; |
990 | struct inquiry_entry *e; | |
991 | int copied = 0; | |
992 | ||
561aafbc | 993 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 994 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
995 | |
996 | if (copied >= num) | |
997 | break; | |
998 | ||
1da177e4 LT |
999 | bacpy(&info->bdaddr, &data->bdaddr); |
1000 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1001 | info->pscan_period_mode = data->pscan_period_mode; | |
1002 | info->pscan_mode = data->pscan_mode; | |
1003 | memcpy(info->dev_class, data->dev_class, 3); | |
1004 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1005 | |
1da177e4 | 1006 | info++; |
b57c1a56 | 1007 | copied++; |
1da177e4 LT |
1008 | } |
1009 | ||
1010 | BT_DBG("cache %p, copied %d", cache, copied); | |
1011 | return copied; | |
1012 | } | |
1013 | ||
42c6b129 | 1014 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1015 | { |
1016 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1017 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1018 | struct hci_cp_inquiry cp; |
1019 | ||
1020 | BT_DBG("%s", hdev->name); | |
1021 | ||
1022 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1023 | return; | |
1024 | ||
1025 | /* Start Inquiry */ | |
1026 | memcpy(&cp.lap, &ir->lap, 3); | |
1027 | cp.length = ir->length; | |
1028 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1029 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1030 | } |
1031 | ||
3e13fa1e AG |
1032 | static int wait_inquiry(void *word) |
1033 | { | |
1034 | schedule(); | |
1035 | return signal_pending(current); | |
1036 | } | |
1037 | ||
1da177e4 LT |
1038 | int hci_inquiry(void __user *arg) |
1039 | { | |
1040 | __u8 __user *ptr = arg; | |
1041 | struct hci_inquiry_req ir; | |
1042 | struct hci_dev *hdev; | |
1043 | int err = 0, do_inquiry = 0, max_rsp; | |
1044 | long timeo; | |
1045 | __u8 *buf; | |
1046 | ||
1047 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1048 | return -EFAULT; | |
1049 | ||
5a08ecce AE |
1050 | hdev = hci_dev_get(ir.dev_id); |
1051 | if (!hdev) | |
1da177e4 LT |
1052 | return -ENODEV; |
1053 | ||
0736cfa8 MH |
1054 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1055 | err = -EBUSY; | |
1056 | goto done; | |
1057 | } | |
1058 | ||
5b69bef5 MH |
1059 | if (hdev->dev_type != HCI_BREDR) { |
1060 | err = -EOPNOTSUPP; | |
1061 | goto done; | |
1062 | } | |
1063 | ||
56f87901 JH |
1064 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1065 | err = -EOPNOTSUPP; | |
1066 | goto done; | |
1067 | } | |
1068 | ||
09fd0de5 | 1069 | hci_dev_lock(hdev); |
8e87d142 | 1070 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1071 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1072 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1073 | do_inquiry = 1; |
1074 | } | |
09fd0de5 | 1075 | hci_dev_unlock(hdev); |
1da177e4 | 1076 | |
04837f64 | 1077 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1078 | |
1079 | if (do_inquiry) { | |
01178cd4 JH |
1080 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1081 | timeo); | |
70f23020 AE |
1082 | if (err < 0) |
1083 | goto done; | |
3e13fa1e AG |
1084 | |
1085 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1086 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1087 | */ | |
1088 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
1089 | TASK_INTERRUPTIBLE)) | |
1090 | return -EINTR; | |
70f23020 | 1091 | } |
1da177e4 | 1092 | |
8fc9ced3 GP |
1093 | /* for unlimited number of responses we will use buffer with |
1094 | * 255 entries | |
1095 | */ | |
1da177e4 LT |
1096 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1097 | ||
1098 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1099 | * copy it to the user space. | |
1100 | */ | |
01df8c31 | 1101 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1102 | if (!buf) { |
1da177e4 LT |
1103 | err = -ENOMEM; |
1104 | goto done; | |
1105 | } | |
1106 | ||
09fd0de5 | 1107 | hci_dev_lock(hdev); |
1da177e4 | 1108 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1109 | hci_dev_unlock(hdev); |
1da177e4 LT |
1110 | |
1111 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1112 | ||
1113 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1114 | ptr += sizeof(ir); | |
1115 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1116 | ir.num_rsp)) |
1da177e4 | 1117 | err = -EFAULT; |
8e87d142 | 1118 | } else |
1da177e4 LT |
1119 | err = -EFAULT; |
1120 | ||
1121 | kfree(buf); | |
1122 | ||
1123 | done: | |
1124 | hci_dev_put(hdev); | |
1125 | return err; | |
1126 | } | |
1127 | ||
cbed0ca1 | 1128 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1129 | { |
1da177e4 LT |
1130 | int ret = 0; |
1131 | ||
1da177e4 LT |
1132 | BT_DBG("%s %p", hdev->name, hdev); |
1133 | ||
1134 | hci_req_lock(hdev); | |
1135 | ||
94324962 JH |
1136 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1137 | ret = -ENODEV; | |
1138 | goto done; | |
1139 | } | |
1140 | ||
a5c8f270 MH |
1141 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1142 | /* Check for rfkill but allow the HCI setup stage to | |
1143 | * proceed (which in itself doesn't cause any RF activity). | |
1144 | */ | |
1145 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
1146 | ret = -ERFKILL; | |
1147 | goto done; | |
1148 | } | |
1149 | ||
1150 | /* Check for valid public address or a configured static | |
1151 | * random adddress, but let the HCI setup proceed to | |
1152 | * be able to determine if there is a public address | |
1153 | * or not. | |
1154 | * | |
1155 | * This check is only valid for BR/EDR controllers | |
1156 | * since AMP controllers do not have an address. | |
1157 | */ | |
1158 | if (hdev->dev_type == HCI_BREDR && | |
1159 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1160 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1161 | ret = -EADDRNOTAVAIL; | |
1162 | goto done; | |
1163 | } | |
611b30f7 MH |
1164 | } |
1165 | ||
1da177e4 LT |
1166 | if (test_bit(HCI_UP, &hdev->flags)) { |
1167 | ret = -EALREADY; | |
1168 | goto done; | |
1169 | } | |
1170 | ||
1da177e4 LT |
1171 | if (hdev->open(hdev)) { |
1172 | ret = -EIO; | |
1173 | goto done; | |
1174 | } | |
1175 | ||
f41c70c4 MH |
1176 | atomic_set(&hdev->cmd_cnt, 1); |
1177 | set_bit(HCI_INIT, &hdev->flags); | |
1178 | ||
1179 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1180 | ret = hdev->setup(hdev); | |
1181 | ||
1182 | if (!ret) { | |
f41c70c4 MH |
1183 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1184 | set_bit(HCI_RAW, &hdev->flags); | |
1185 | ||
0736cfa8 MH |
1186 | if (!test_bit(HCI_RAW, &hdev->flags) && |
1187 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 1188 | ret = __hci_init(hdev); |
1da177e4 LT |
1189 | } |
1190 | ||
f41c70c4 MH |
1191 | clear_bit(HCI_INIT, &hdev->flags); |
1192 | ||
1da177e4 LT |
1193 | if (!ret) { |
1194 | hci_dev_hold(hdev); | |
1195 | set_bit(HCI_UP, &hdev->flags); | |
1196 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 1197 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 1198 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 1199 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1200 | hci_dev_lock(hdev); |
744cf19e | 1201 | mgmt_powered(hdev, 1); |
09fd0de5 | 1202 | hci_dev_unlock(hdev); |
56e5cb86 | 1203 | } |
8e87d142 | 1204 | } else { |
1da177e4 | 1205 | /* Init failed, cleanup */ |
3eff45ea | 1206 | flush_work(&hdev->tx_work); |
c347b765 | 1207 | flush_work(&hdev->cmd_work); |
b78752cc | 1208 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1209 | |
1210 | skb_queue_purge(&hdev->cmd_q); | |
1211 | skb_queue_purge(&hdev->rx_q); | |
1212 | ||
1213 | if (hdev->flush) | |
1214 | hdev->flush(hdev); | |
1215 | ||
1216 | if (hdev->sent_cmd) { | |
1217 | kfree_skb(hdev->sent_cmd); | |
1218 | hdev->sent_cmd = NULL; | |
1219 | } | |
1220 | ||
1221 | hdev->close(hdev); | |
1222 | hdev->flags = 0; | |
1223 | } | |
1224 | ||
1225 | done: | |
1226 | hci_req_unlock(hdev); | |
1da177e4 LT |
1227 | return ret; |
1228 | } | |
1229 | ||
cbed0ca1 JH |
1230 | /* ---- HCI ioctl helpers ---- */ |
1231 | ||
1232 | int hci_dev_open(__u16 dev) | |
1233 | { | |
1234 | struct hci_dev *hdev; | |
1235 | int err; | |
1236 | ||
1237 | hdev = hci_dev_get(dev); | |
1238 | if (!hdev) | |
1239 | return -ENODEV; | |
1240 | ||
e1d08f40 JH |
1241 | /* We need to ensure that no other power on/off work is pending |
1242 | * before proceeding to call hci_dev_do_open. This is | |
1243 | * particularly important if the setup procedure has not yet | |
1244 | * completed. | |
1245 | */ | |
1246 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1247 | cancel_delayed_work(&hdev->power_off); | |
1248 | ||
a5c8f270 MH |
1249 | /* After this call it is guaranteed that the setup procedure |
1250 | * has finished. This means that error conditions like RFKILL | |
1251 | * or no valid public or static random address apply. | |
1252 | */ | |
e1d08f40 JH |
1253 | flush_workqueue(hdev->req_workqueue); |
1254 | ||
cbed0ca1 JH |
1255 | err = hci_dev_do_open(hdev); |
1256 | ||
1257 | hci_dev_put(hdev); | |
1258 | ||
1259 | return err; | |
1260 | } | |
1261 | ||
1da177e4 LT |
1262 | static int hci_dev_do_close(struct hci_dev *hdev) |
1263 | { | |
1264 | BT_DBG("%s %p", hdev->name, hdev); | |
1265 | ||
78c04c0b VCG |
1266 | cancel_delayed_work(&hdev->power_off); |
1267 | ||
1da177e4 LT |
1268 | hci_req_cancel(hdev, ENODEV); |
1269 | hci_req_lock(hdev); | |
1270 | ||
1271 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1272 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1273 | hci_req_unlock(hdev); |
1274 | return 0; | |
1275 | } | |
1276 | ||
3eff45ea GP |
1277 | /* Flush RX and TX works */ |
1278 | flush_work(&hdev->tx_work); | |
b78752cc | 1279 | flush_work(&hdev->rx_work); |
1da177e4 | 1280 | |
16ab91ab | 1281 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1282 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1283 | hdev->discov_timeout = 0; |
5e5282bb | 1284 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 1285 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1286 | } |
1287 | ||
a8b2d5c2 | 1288 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1289 | cancel_delayed_work(&hdev->service_cache); |
1290 | ||
7ba8b4be AG |
1291 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1292 | ||
09fd0de5 | 1293 | hci_dev_lock(hdev); |
1f9b9a5d | 1294 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1295 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1296 | hci_dev_unlock(hdev); |
1da177e4 LT |
1297 | |
1298 | hci_notify(hdev, HCI_DEV_DOWN); | |
1299 | ||
1300 | if (hdev->flush) | |
1301 | hdev->flush(hdev); | |
1302 | ||
1303 | /* Reset device */ | |
1304 | skb_queue_purge(&hdev->cmd_q); | |
1305 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1306 | if (!test_bit(HCI_RAW, &hdev->flags) && |
3a6afbd2 | 1307 | !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
a6c511c6 | 1308 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1309 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1310 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1311 | clear_bit(HCI_INIT, &hdev->flags); |
1312 | } | |
1313 | ||
c347b765 GP |
1314 | /* flush cmd work */ |
1315 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1316 | |
1317 | /* Drop queues */ | |
1318 | skb_queue_purge(&hdev->rx_q); | |
1319 | skb_queue_purge(&hdev->cmd_q); | |
1320 | skb_queue_purge(&hdev->raw_q); | |
1321 | ||
1322 | /* Drop last sent command */ | |
1323 | if (hdev->sent_cmd) { | |
b79f44c1 | 1324 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1325 | kfree_skb(hdev->sent_cmd); |
1326 | hdev->sent_cmd = NULL; | |
1327 | } | |
1328 | ||
b6ddb638 JH |
1329 | kfree_skb(hdev->recv_evt); |
1330 | hdev->recv_evt = NULL; | |
1331 | ||
1da177e4 LT |
1332 | /* After this point our queues are empty |
1333 | * and no tasks are scheduled. */ | |
1334 | hdev->close(hdev); | |
1335 | ||
35b973c9 JH |
1336 | /* Clear flags */ |
1337 | hdev->flags = 0; | |
1338 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1339 | ||
93c311a0 MH |
1340 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
1341 | if (hdev->dev_type == HCI_BREDR) { | |
1342 | hci_dev_lock(hdev); | |
1343 | mgmt_powered(hdev, 0); | |
1344 | hci_dev_unlock(hdev); | |
1345 | } | |
8ee56540 | 1346 | } |
5add6af8 | 1347 | |
ced5c338 | 1348 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1349 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1350 | |
e59fda8d | 1351 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1352 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1353 | |
1da177e4 LT |
1354 | hci_req_unlock(hdev); |
1355 | ||
1356 | hci_dev_put(hdev); | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | int hci_dev_close(__u16 dev) | |
1361 | { | |
1362 | struct hci_dev *hdev; | |
1363 | int err; | |
1364 | ||
70f23020 AE |
1365 | hdev = hci_dev_get(dev); |
1366 | if (!hdev) | |
1da177e4 | 1367 | return -ENODEV; |
8ee56540 | 1368 | |
0736cfa8 MH |
1369 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1370 | err = -EBUSY; | |
1371 | goto done; | |
1372 | } | |
1373 | ||
8ee56540 MH |
1374 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
1375 | cancel_delayed_work(&hdev->power_off); | |
1376 | ||
1da177e4 | 1377 | err = hci_dev_do_close(hdev); |
8ee56540 | 1378 | |
0736cfa8 | 1379 | done: |
1da177e4 LT |
1380 | hci_dev_put(hdev); |
1381 | return err; | |
1382 | } | |
1383 | ||
1384 | int hci_dev_reset(__u16 dev) | |
1385 | { | |
1386 | struct hci_dev *hdev; | |
1387 | int ret = 0; | |
1388 | ||
70f23020 AE |
1389 | hdev = hci_dev_get(dev); |
1390 | if (!hdev) | |
1da177e4 LT |
1391 | return -ENODEV; |
1392 | ||
1393 | hci_req_lock(hdev); | |
1da177e4 | 1394 | |
808a049e MH |
1395 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1396 | ret = -ENETDOWN; | |
1da177e4 | 1397 | goto done; |
808a049e | 1398 | } |
1da177e4 | 1399 | |
0736cfa8 MH |
1400 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1401 | ret = -EBUSY; | |
1402 | goto done; | |
1403 | } | |
1404 | ||
1da177e4 LT |
1405 | /* Drop queues */ |
1406 | skb_queue_purge(&hdev->rx_q); | |
1407 | skb_queue_purge(&hdev->cmd_q); | |
1408 | ||
09fd0de5 | 1409 | hci_dev_lock(hdev); |
1f9b9a5d | 1410 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1411 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1412 | hci_dev_unlock(hdev); |
1da177e4 LT |
1413 | |
1414 | if (hdev->flush) | |
1415 | hdev->flush(hdev); | |
1416 | ||
8e87d142 | 1417 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1418 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1419 | |
1420 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1421 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1422 | |
1423 | done: | |
1da177e4 LT |
1424 | hci_req_unlock(hdev); |
1425 | hci_dev_put(hdev); | |
1426 | return ret; | |
1427 | } | |
1428 | ||
1429 | int hci_dev_reset_stat(__u16 dev) | |
1430 | { | |
1431 | struct hci_dev *hdev; | |
1432 | int ret = 0; | |
1433 | ||
70f23020 AE |
1434 | hdev = hci_dev_get(dev); |
1435 | if (!hdev) | |
1da177e4 LT |
1436 | return -ENODEV; |
1437 | ||
0736cfa8 MH |
1438 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1439 | ret = -EBUSY; | |
1440 | goto done; | |
1441 | } | |
1442 | ||
1da177e4 LT |
1443 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1444 | ||
0736cfa8 | 1445 | done: |
1da177e4 | 1446 | hci_dev_put(hdev); |
1da177e4 LT |
1447 | return ret; |
1448 | } | |
1449 | ||
1450 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1451 | { | |
1452 | struct hci_dev *hdev; | |
1453 | struct hci_dev_req dr; | |
1454 | int err = 0; | |
1455 | ||
1456 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1457 | return -EFAULT; | |
1458 | ||
70f23020 AE |
1459 | hdev = hci_dev_get(dr.dev_id); |
1460 | if (!hdev) | |
1da177e4 LT |
1461 | return -ENODEV; |
1462 | ||
0736cfa8 MH |
1463 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1464 | err = -EBUSY; | |
1465 | goto done; | |
1466 | } | |
1467 | ||
5b69bef5 MH |
1468 | if (hdev->dev_type != HCI_BREDR) { |
1469 | err = -EOPNOTSUPP; | |
1470 | goto done; | |
1471 | } | |
1472 | ||
56f87901 JH |
1473 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1474 | err = -EOPNOTSUPP; | |
1475 | goto done; | |
1476 | } | |
1477 | ||
1da177e4 LT |
1478 | switch (cmd) { |
1479 | case HCISETAUTH: | |
01178cd4 JH |
1480 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1481 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1482 | break; |
1483 | ||
1484 | case HCISETENCRYPT: | |
1485 | if (!lmp_encrypt_capable(hdev)) { | |
1486 | err = -EOPNOTSUPP; | |
1487 | break; | |
1488 | } | |
1489 | ||
1490 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1491 | /* Auth must be enabled first */ | |
01178cd4 JH |
1492 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1493 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1494 | if (err) |
1495 | break; | |
1496 | } | |
1497 | ||
01178cd4 JH |
1498 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1499 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1500 | break; |
1501 | ||
1502 | case HCISETSCAN: | |
01178cd4 JH |
1503 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1504 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1505 | break; |
1506 | ||
1da177e4 | 1507 | case HCISETLINKPOL: |
01178cd4 JH |
1508 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1509 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1510 | break; |
1511 | ||
1512 | case HCISETLINKMODE: | |
e4e8e37c MH |
1513 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1514 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1515 | break; | |
1516 | ||
1517 | case HCISETPTYPE: | |
1518 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1519 | break; |
1520 | ||
1521 | case HCISETACLMTU: | |
e4e8e37c MH |
1522 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1523 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1524 | break; |
1525 | ||
1526 | case HCISETSCOMTU: | |
e4e8e37c MH |
1527 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1528 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1529 | break; |
1530 | ||
1531 | default: | |
1532 | err = -EINVAL; | |
1533 | break; | |
1534 | } | |
e4e8e37c | 1535 | |
0736cfa8 | 1536 | done: |
1da177e4 LT |
1537 | hci_dev_put(hdev); |
1538 | return err; | |
1539 | } | |
1540 | ||
1541 | int hci_get_dev_list(void __user *arg) | |
1542 | { | |
8035ded4 | 1543 | struct hci_dev *hdev; |
1da177e4 LT |
1544 | struct hci_dev_list_req *dl; |
1545 | struct hci_dev_req *dr; | |
1da177e4 LT |
1546 | int n = 0, size, err; |
1547 | __u16 dev_num; | |
1548 | ||
1549 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1550 | return -EFAULT; | |
1551 | ||
1552 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1553 | return -EINVAL; | |
1554 | ||
1555 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1556 | ||
70f23020 AE |
1557 | dl = kzalloc(size, GFP_KERNEL); |
1558 | if (!dl) | |
1da177e4 LT |
1559 | return -ENOMEM; |
1560 | ||
1561 | dr = dl->dev_req; | |
1562 | ||
f20d09d5 | 1563 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1564 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1565 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1566 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1567 | |
a8b2d5c2 JH |
1568 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1569 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1570 | |
1da177e4 LT |
1571 | (dr + n)->dev_id = hdev->id; |
1572 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1573 | |
1da177e4 LT |
1574 | if (++n >= dev_num) |
1575 | break; | |
1576 | } | |
f20d09d5 | 1577 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1578 | |
1579 | dl->dev_num = n; | |
1580 | size = sizeof(*dl) + n * sizeof(*dr); | |
1581 | ||
1582 | err = copy_to_user(arg, dl, size); | |
1583 | kfree(dl); | |
1584 | ||
1585 | return err ? -EFAULT : 0; | |
1586 | } | |
1587 | ||
1588 | int hci_get_dev_info(void __user *arg) | |
1589 | { | |
1590 | struct hci_dev *hdev; | |
1591 | struct hci_dev_info di; | |
1592 | int err = 0; | |
1593 | ||
1594 | if (copy_from_user(&di, arg, sizeof(di))) | |
1595 | return -EFAULT; | |
1596 | ||
70f23020 AE |
1597 | hdev = hci_dev_get(di.dev_id); |
1598 | if (!hdev) | |
1da177e4 LT |
1599 | return -ENODEV; |
1600 | ||
a8b2d5c2 | 1601 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1602 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1603 | |
a8b2d5c2 JH |
1604 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1605 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1606 | |
1da177e4 LT |
1607 | strcpy(di.name, hdev->name); |
1608 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1609 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
1610 | di.flags = hdev->flags; |
1611 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1612 | if (lmp_bredr_capable(hdev)) { |
1613 | di.acl_mtu = hdev->acl_mtu; | |
1614 | di.acl_pkts = hdev->acl_pkts; | |
1615 | di.sco_mtu = hdev->sco_mtu; | |
1616 | di.sco_pkts = hdev->sco_pkts; | |
1617 | } else { | |
1618 | di.acl_mtu = hdev->le_mtu; | |
1619 | di.acl_pkts = hdev->le_pkts; | |
1620 | di.sco_mtu = 0; | |
1621 | di.sco_pkts = 0; | |
1622 | } | |
1da177e4 LT |
1623 | di.link_policy = hdev->link_policy; |
1624 | di.link_mode = hdev->link_mode; | |
1625 | ||
1626 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1627 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1628 | ||
1629 | if (copy_to_user(arg, &di, sizeof(di))) | |
1630 | err = -EFAULT; | |
1631 | ||
1632 | hci_dev_put(hdev); | |
1633 | ||
1634 | return err; | |
1635 | } | |
1636 | ||
1637 | /* ---- Interface to HCI drivers ---- */ | |
1638 | ||
611b30f7 MH |
1639 | static int hci_rfkill_set_block(void *data, bool blocked) |
1640 | { | |
1641 | struct hci_dev *hdev = data; | |
1642 | ||
1643 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1644 | ||
0736cfa8 MH |
1645 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
1646 | return -EBUSY; | |
1647 | ||
5e130367 JH |
1648 | if (blocked) { |
1649 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
1650 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
1651 | hci_dev_do_close(hdev); | |
5e130367 JH |
1652 | } else { |
1653 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 1654 | } |
611b30f7 MH |
1655 | |
1656 | return 0; | |
1657 | } | |
1658 | ||
1659 | static const struct rfkill_ops hci_rfkill_ops = { | |
1660 | .set_block = hci_rfkill_set_block, | |
1661 | }; | |
1662 | ||
ab81cbf9 JH |
1663 | static void hci_power_on(struct work_struct *work) |
1664 | { | |
1665 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1666 | int err; |
ab81cbf9 JH |
1667 | |
1668 | BT_DBG("%s", hdev->name); | |
1669 | ||
cbed0ca1 | 1670 | err = hci_dev_do_open(hdev); |
96570ffc JH |
1671 | if (err < 0) { |
1672 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 1673 | return; |
96570ffc | 1674 | } |
ab81cbf9 | 1675 | |
a5c8f270 MH |
1676 | /* During the HCI setup phase, a few error conditions are |
1677 | * ignored and they need to be checked now. If they are still | |
1678 | * valid, it is important to turn the device back off. | |
1679 | */ | |
1680 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
1681 | (hdev->dev_type == HCI_BREDR && | |
1682 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1683 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
1684 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1685 | hci_dev_do_close(hdev); | |
1686 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
1687 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1688 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 1689 | } |
ab81cbf9 | 1690 | |
a8b2d5c2 | 1691 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1692 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1693 | } |
1694 | ||
1695 | static void hci_power_off(struct work_struct *work) | |
1696 | { | |
3243553f | 1697 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1698 | power_off.work); |
ab81cbf9 JH |
1699 | |
1700 | BT_DBG("%s", hdev->name); | |
1701 | ||
8ee56540 | 1702 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1703 | } |
1704 | ||
16ab91ab JH |
1705 | static void hci_discov_off(struct work_struct *work) |
1706 | { | |
1707 | struct hci_dev *hdev; | |
b1e73124 | 1708 | struct hci_request req; |
16ab91ab JH |
1709 | u8 scan = SCAN_PAGE; |
1710 | ||
1711 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1712 | ||
1713 | BT_DBG("%s", hdev->name); | |
1714 | ||
09fd0de5 | 1715 | hci_dev_lock(hdev); |
16ab91ab | 1716 | |
b1e73124 MH |
1717 | hci_req_init(&req, hdev); |
1718 | hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1719 | hci_req_run(&req, NULL); | |
16ab91ab | 1720 | |
310a3d48 MH |
1721 | /* When discoverable timeout triggers, then just make sure |
1722 | * the limited discoverable flag is cleared. Even in the case | |
1723 | * of a timeout triggered from general discoverable, it is | |
1724 | * safe to unconditionally clear the flag. | |
1725 | */ | |
1726 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); | |
1727 | ||
16ab91ab JH |
1728 | hdev->discov_timeout = 0; |
1729 | ||
09fd0de5 | 1730 | hci_dev_unlock(hdev); |
16ab91ab JH |
1731 | } |
1732 | ||
2aeb9a1a JH |
1733 | int hci_uuids_clear(struct hci_dev *hdev) |
1734 | { | |
4821002c | 1735 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1736 | |
4821002c JH |
1737 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1738 | list_del(&uuid->list); | |
2aeb9a1a JH |
1739 | kfree(uuid); |
1740 | } | |
1741 | ||
1742 | return 0; | |
1743 | } | |
1744 | ||
55ed8ca1 JH |
1745 | int hci_link_keys_clear(struct hci_dev *hdev) |
1746 | { | |
1747 | struct list_head *p, *n; | |
1748 | ||
1749 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1750 | struct link_key *key; | |
1751 | ||
1752 | key = list_entry(p, struct link_key, list); | |
1753 | ||
1754 | list_del(p); | |
1755 | kfree(key); | |
1756 | } | |
1757 | ||
1758 | return 0; | |
1759 | } | |
1760 | ||
b899efaf VCG |
1761 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1762 | { | |
1763 | struct smp_ltk *k, *tmp; | |
1764 | ||
1765 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1766 | list_del(&k->list); | |
1767 | kfree(k); | |
1768 | } | |
1769 | ||
1770 | return 0; | |
1771 | } | |
1772 | ||
55ed8ca1 JH |
1773 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1774 | { | |
8035ded4 | 1775 | struct link_key *k; |
55ed8ca1 | 1776 | |
8035ded4 | 1777 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1778 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1779 | return k; | |
55ed8ca1 JH |
1780 | |
1781 | return NULL; | |
1782 | } | |
1783 | ||
745c0ce3 | 1784 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1785 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1786 | { |
1787 | /* Legacy key */ | |
1788 | if (key_type < 0x03) | |
745c0ce3 | 1789 | return true; |
d25e28ab JH |
1790 | |
1791 | /* Debug keys are insecure so don't store them persistently */ | |
1792 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1793 | return false; |
d25e28ab JH |
1794 | |
1795 | /* Changed combination key and there's no previous one */ | |
1796 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1797 | return false; |
d25e28ab JH |
1798 | |
1799 | /* Security mode 3 case */ | |
1800 | if (!conn) | |
745c0ce3 | 1801 | return true; |
d25e28ab JH |
1802 | |
1803 | /* Neither local nor remote side had no-bonding as requirement */ | |
1804 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1805 | return true; |
d25e28ab JH |
1806 | |
1807 | /* Local side had dedicated bonding as requirement */ | |
1808 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1809 | return true; |
d25e28ab JH |
1810 | |
1811 | /* Remote side had dedicated bonding as requirement */ | |
1812 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1813 | return true; |
d25e28ab JH |
1814 | |
1815 | /* If none of the above criteria match, then don't store the key | |
1816 | * persistently */ | |
745c0ce3 | 1817 | return false; |
d25e28ab JH |
1818 | } |
1819 | ||
c9839a11 | 1820 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1821 | { |
c9839a11 | 1822 | struct smp_ltk *k; |
75d262c2 | 1823 | |
c9839a11 VCG |
1824 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1825 | if (k->ediv != ediv || | |
a8c5fb1a | 1826 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1827 | continue; |
1828 | ||
c9839a11 | 1829 | return k; |
75d262c2 VCG |
1830 | } |
1831 | ||
1832 | return NULL; | |
1833 | } | |
75d262c2 | 1834 | |
c9839a11 | 1835 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1836 | u8 addr_type) |
75d262c2 | 1837 | { |
c9839a11 | 1838 | struct smp_ltk *k; |
75d262c2 | 1839 | |
c9839a11 VCG |
1840 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1841 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1842 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1843 | return k; |
1844 | ||
1845 | return NULL; | |
1846 | } | |
75d262c2 | 1847 | |
d25e28ab | 1848 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1849 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1850 | { |
1851 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1852 | u8 old_key_type; |
1853 | bool persistent; | |
55ed8ca1 JH |
1854 | |
1855 | old_key = hci_find_link_key(hdev, bdaddr); | |
1856 | if (old_key) { | |
1857 | old_key_type = old_key->type; | |
1858 | key = old_key; | |
1859 | } else { | |
12adcf3a | 1860 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1861 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1862 | if (!key) | |
1863 | return -ENOMEM; | |
1864 | list_add(&key->list, &hdev->link_keys); | |
1865 | } | |
1866 | ||
6ed93dc6 | 1867 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1868 | |
d25e28ab JH |
1869 | /* Some buggy controller combinations generate a changed |
1870 | * combination key for legacy pairing even when there's no | |
1871 | * previous key */ | |
1872 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1873 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1874 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1875 | if (conn) |
1876 | conn->key_type = type; | |
1877 | } | |
d25e28ab | 1878 | |
55ed8ca1 | 1879 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1880 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1881 | key->pin_len = pin_len; |
1882 | ||
b6020ba0 | 1883 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1884 | key->type = old_key_type; |
4748fed2 JH |
1885 | else |
1886 | key->type = type; | |
1887 | ||
4df378a1 JH |
1888 | if (!new_key) |
1889 | return 0; | |
1890 | ||
1891 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1892 | ||
744cf19e | 1893 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1894 | |
6ec5bcad VA |
1895 | if (conn) |
1896 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1897 | |
1898 | return 0; | |
1899 | } | |
1900 | ||
c9839a11 | 1901 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1902 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1903 | ediv, u8 rand[8]) |
75d262c2 | 1904 | { |
c9839a11 | 1905 | struct smp_ltk *key, *old_key; |
75d262c2 | 1906 | |
c9839a11 VCG |
1907 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1908 | return 0; | |
75d262c2 | 1909 | |
c9839a11 VCG |
1910 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1911 | if (old_key) | |
75d262c2 | 1912 | key = old_key; |
c9839a11 VCG |
1913 | else { |
1914 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1915 | if (!key) |
1916 | return -ENOMEM; | |
c9839a11 | 1917 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1918 | } |
1919 | ||
75d262c2 | 1920 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1921 | key->bdaddr_type = addr_type; |
1922 | memcpy(key->val, tk, sizeof(key->val)); | |
1923 | key->authenticated = authenticated; | |
1924 | key->ediv = ediv; | |
1925 | key->enc_size = enc_size; | |
1926 | key->type = type; | |
1927 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1928 | |
c9839a11 VCG |
1929 | if (!new_key) |
1930 | return 0; | |
75d262c2 | 1931 | |
261cc5aa VCG |
1932 | if (type & HCI_SMP_LTK) |
1933 | mgmt_new_ltk(hdev, key, 1); | |
1934 | ||
75d262c2 VCG |
1935 | return 0; |
1936 | } | |
1937 | ||
55ed8ca1 JH |
1938 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1939 | { | |
1940 | struct link_key *key; | |
1941 | ||
1942 | key = hci_find_link_key(hdev, bdaddr); | |
1943 | if (!key) | |
1944 | return -ENOENT; | |
1945 | ||
6ed93dc6 | 1946 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
1947 | |
1948 | list_del(&key->list); | |
1949 | kfree(key); | |
1950 | ||
1951 | return 0; | |
1952 | } | |
1953 | ||
b899efaf VCG |
1954 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1955 | { | |
1956 | struct smp_ltk *k, *tmp; | |
1957 | ||
1958 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1959 | if (bacmp(bdaddr, &k->bdaddr)) | |
1960 | continue; | |
1961 | ||
6ed93dc6 | 1962 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
1963 | |
1964 | list_del(&k->list); | |
1965 | kfree(k); | |
1966 | } | |
1967 | ||
1968 | return 0; | |
1969 | } | |
1970 | ||
6bd32326 | 1971 | /* HCI command timer function */ |
bda4f23a | 1972 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1973 | { |
1974 | struct hci_dev *hdev = (void *) arg; | |
1975 | ||
bda4f23a AE |
1976 | if (hdev->sent_cmd) { |
1977 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1978 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1979 | ||
1980 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1981 | } else { | |
1982 | BT_ERR("%s command tx timeout", hdev->name); | |
1983 | } | |
1984 | ||
6bd32326 | 1985 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1986 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1987 | } |
1988 | ||
2763eda6 | 1989 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1990 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1991 | { |
1992 | struct oob_data *data; | |
1993 | ||
1994 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1995 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1996 | return data; | |
1997 | ||
1998 | return NULL; | |
1999 | } | |
2000 | ||
2001 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
2002 | { | |
2003 | struct oob_data *data; | |
2004 | ||
2005 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2006 | if (!data) | |
2007 | return -ENOENT; | |
2008 | ||
6ed93dc6 | 2009 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2010 | |
2011 | list_del(&data->list); | |
2012 | kfree(data); | |
2013 | ||
2014 | return 0; | |
2015 | } | |
2016 | ||
2017 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
2018 | { | |
2019 | struct oob_data *data, *n; | |
2020 | ||
2021 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2022 | list_del(&data->list); | |
2023 | kfree(data); | |
2024 | } | |
2025 | ||
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 2030 | u8 *randomizer) |
2763eda6 SJ |
2031 | { |
2032 | struct oob_data *data; | |
2033 | ||
2034 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2035 | ||
2036 | if (!data) { | |
2037 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
2038 | if (!data) | |
2039 | return -ENOMEM; | |
2040 | ||
2041 | bacpy(&data->bdaddr, bdaddr); | |
2042 | list_add(&data->list, &hdev->remote_oob_data); | |
2043 | } | |
2044 | ||
2045 | memcpy(data->hash, hash, sizeof(data->hash)); | |
2046 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
2047 | ||
6ed93dc6 | 2048 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2049 | |
2050 | return 0; | |
2051 | } | |
2052 | ||
04124681 | 2053 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 2054 | { |
8035ded4 | 2055 | struct bdaddr_list *b; |
b2a66aad | 2056 | |
8035ded4 | 2057 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
2058 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
2059 | return b; | |
b2a66aad AJ |
2060 | |
2061 | return NULL; | |
2062 | } | |
2063 | ||
2064 | int hci_blacklist_clear(struct hci_dev *hdev) | |
2065 | { | |
2066 | struct list_head *p, *n; | |
2067 | ||
2068 | list_for_each_safe(p, n, &hdev->blacklist) { | |
2069 | struct bdaddr_list *b; | |
2070 | ||
2071 | b = list_entry(p, struct bdaddr_list, list); | |
2072 | ||
2073 | list_del(p); | |
2074 | kfree(b); | |
2075 | } | |
2076 | ||
2077 | return 0; | |
2078 | } | |
2079 | ||
88c1fe4b | 2080 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2081 | { |
2082 | struct bdaddr_list *entry; | |
b2a66aad AJ |
2083 | |
2084 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
2085 | return -EBADF; | |
2086 | ||
5e762444 AJ |
2087 | if (hci_blacklist_lookup(hdev, bdaddr)) |
2088 | return -EEXIST; | |
b2a66aad AJ |
2089 | |
2090 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
2091 | if (!entry) |
2092 | return -ENOMEM; | |
b2a66aad AJ |
2093 | |
2094 | bacpy(&entry->bdaddr, bdaddr); | |
2095 | ||
2096 | list_add(&entry->list, &hdev->blacklist); | |
2097 | ||
88c1fe4b | 2098 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
2099 | } |
2100 | ||
88c1fe4b | 2101 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2102 | { |
2103 | struct bdaddr_list *entry; | |
b2a66aad | 2104 | |
1ec918ce | 2105 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 2106 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
2107 | |
2108 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 2109 | if (!entry) |
5e762444 | 2110 | return -ENOENT; |
b2a66aad AJ |
2111 | |
2112 | list_del(&entry->list); | |
2113 | kfree(entry); | |
2114 | ||
88c1fe4b | 2115 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
2116 | } |
2117 | ||
4c87eaab | 2118 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2119 | { |
4c87eaab AG |
2120 | if (status) { |
2121 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2122 | |
4c87eaab AG |
2123 | hci_dev_lock(hdev); |
2124 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2125 | hci_dev_unlock(hdev); | |
2126 | return; | |
2127 | } | |
7ba8b4be AG |
2128 | } |
2129 | ||
4c87eaab | 2130 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2131 | { |
4c87eaab AG |
2132 | /* General inquiry access code (GIAC) */ |
2133 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2134 | struct hci_request req; | |
2135 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2136 | int err; |
2137 | ||
4c87eaab AG |
2138 | if (status) { |
2139 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2140 | return; | |
2141 | } | |
7ba8b4be | 2142 | |
4c87eaab AG |
2143 | switch (hdev->discovery.type) { |
2144 | case DISCOV_TYPE_LE: | |
2145 | hci_dev_lock(hdev); | |
2146 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2147 | hci_dev_unlock(hdev); | |
2148 | break; | |
7ba8b4be | 2149 | |
4c87eaab AG |
2150 | case DISCOV_TYPE_INTERLEAVED: |
2151 | hci_req_init(&req, hdev); | |
7ba8b4be | 2152 | |
4c87eaab AG |
2153 | memset(&cp, 0, sizeof(cp)); |
2154 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2155 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2156 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2157 | |
4c87eaab | 2158 | hci_dev_lock(hdev); |
7dbfac1d | 2159 | |
4c87eaab | 2160 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2161 | |
4c87eaab AG |
2162 | err = hci_req_run(&req, inquiry_complete); |
2163 | if (err) { | |
2164 | BT_ERR("Inquiry request failed: err %d", err); | |
2165 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2166 | } | |
7dbfac1d | 2167 | |
4c87eaab AG |
2168 | hci_dev_unlock(hdev); |
2169 | break; | |
7dbfac1d | 2170 | } |
7dbfac1d AG |
2171 | } |
2172 | ||
7ba8b4be AG |
2173 | static void le_scan_disable_work(struct work_struct *work) |
2174 | { | |
2175 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2176 | le_scan_disable.work); |
7ba8b4be | 2177 | struct hci_cp_le_set_scan_enable cp; |
4c87eaab AG |
2178 | struct hci_request req; |
2179 | int err; | |
7ba8b4be AG |
2180 | |
2181 | BT_DBG("%s", hdev->name); | |
2182 | ||
4c87eaab | 2183 | hci_req_init(&req, hdev); |
28b75a89 | 2184 | |
7ba8b4be | 2185 | memset(&cp, 0, sizeof(cp)); |
4c87eaab AG |
2186 | cp.enable = LE_SCAN_DISABLE; |
2187 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
28b75a89 | 2188 | |
4c87eaab AG |
2189 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2190 | if (err) | |
2191 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2192 | } |
2193 | ||
9be0dab7 DH |
2194 | /* Alloc HCI device */ |
2195 | struct hci_dev *hci_alloc_dev(void) | |
2196 | { | |
2197 | struct hci_dev *hdev; | |
2198 | ||
2199 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2200 | if (!hdev) | |
2201 | return NULL; | |
2202 | ||
b1b813d4 DH |
2203 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2204 | hdev->esco_type = (ESCO_HV1); | |
2205 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2206 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2207 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2208 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2209 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2210 | |
b1b813d4 DH |
2211 | hdev->sniff_max_interval = 800; |
2212 | hdev->sniff_min_interval = 80; | |
2213 | ||
bef64738 MH |
2214 | hdev->le_scan_interval = 0x0060; |
2215 | hdev->le_scan_window = 0x0030; | |
2216 | ||
b1b813d4 DH |
2217 | mutex_init(&hdev->lock); |
2218 | mutex_init(&hdev->req_lock); | |
2219 | ||
2220 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2221 | INIT_LIST_HEAD(&hdev->blacklist); | |
2222 | INIT_LIST_HEAD(&hdev->uuids); | |
2223 | INIT_LIST_HEAD(&hdev->link_keys); | |
2224 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2225 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2226 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2227 | |
2228 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2229 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2230 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2231 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 2232 | |
b1b813d4 DH |
2233 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2234 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2235 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2236 | ||
b1b813d4 DH |
2237 | skb_queue_head_init(&hdev->rx_q); |
2238 | skb_queue_head_init(&hdev->cmd_q); | |
2239 | skb_queue_head_init(&hdev->raw_q); | |
2240 | ||
2241 | init_waitqueue_head(&hdev->req_wait_q); | |
2242 | ||
bda4f23a | 2243 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2244 | |
b1b813d4 DH |
2245 | hci_init_sysfs(hdev); |
2246 | discovery_init(hdev); | |
9be0dab7 DH |
2247 | |
2248 | return hdev; | |
2249 | } | |
2250 | EXPORT_SYMBOL(hci_alloc_dev); | |
2251 | ||
2252 | /* Free HCI device */ | |
2253 | void hci_free_dev(struct hci_dev *hdev) | |
2254 | { | |
9be0dab7 DH |
2255 | /* will free via device release */ |
2256 | put_device(&hdev->dev); | |
2257 | } | |
2258 | EXPORT_SYMBOL(hci_free_dev); | |
2259 | ||
1da177e4 LT |
2260 | /* Register HCI device */ |
2261 | int hci_register_dev(struct hci_dev *hdev) | |
2262 | { | |
b1b813d4 | 2263 | int id, error; |
1da177e4 | 2264 | |
010666a1 | 2265 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2266 | return -EINVAL; |
2267 | ||
08add513 MM |
2268 | /* Do not allow HCI_AMP devices to register at index 0, |
2269 | * so the index can be used as the AMP controller ID. | |
2270 | */ | |
3df92b31 SL |
2271 | switch (hdev->dev_type) { |
2272 | case HCI_BREDR: | |
2273 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2274 | break; | |
2275 | case HCI_AMP: | |
2276 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2277 | break; | |
2278 | default: | |
2279 | return -EINVAL; | |
1da177e4 | 2280 | } |
8e87d142 | 2281 | |
3df92b31 SL |
2282 | if (id < 0) |
2283 | return id; | |
2284 | ||
1da177e4 LT |
2285 | sprintf(hdev->name, "hci%d", id); |
2286 | hdev->id = id; | |
2d8b3a11 AE |
2287 | |
2288 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2289 | ||
d8537548 KC |
2290 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2291 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
2292 | if (!hdev->workqueue) { |
2293 | error = -ENOMEM; | |
2294 | goto err; | |
2295 | } | |
f48fd9c8 | 2296 | |
d8537548 KC |
2297 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2298 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
2299 | if (!hdev->req_workqueue) { |
2300 | destroy_workqueue(hdev->workqueue); | |
2301 | error = -ENOMEM; | |
2302 | goto err; | |
2303 | } | |
2304 | ||
33ca954d DH |
2305 | error = hci_add_sysfs(hdev); |
2306 | if (error < 0) | |
2307 | goto err_wqueue; | |
1da177e4 | 2308 | |
611b30f7 | 2309 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2310 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2311 | hdev); | |
611b30f7 MH |
2312 | if (hdev->rfkill) { |
2313 | if (rfkill_register(hdev->rfkill) < 0) { | |
2314 | rfkill_destroy(hdev->rfkill); | |
2315 | hdev->rfkill = NULL; | |
2316 | } | |
2317 | } | |
2318 | ||
5e130367 JH |
2319 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
2320 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
2321 | ||
a8b2d5c2 | 2322 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 2323 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 2324 | |
01cd3404 | 2325 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
2326 | /* Assume BR/EDR support until proven otherwise (such as |
2327 | * through reading supported features during init. | |
2328 | */ | |
2329 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2330 | } | |
ce2be9ac | 2331 | |
fcee3377 GP |
2332 | write_lock(&hci_dev_list_lock); |
2333 | list_add(&hdev->list, &hci_dev_list); | |
2334 | write_unlock(&hci_dev_list_lock); | |
2335 | ||
1da177e4 | 2336 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2337 | hci_dev_hold(hdev); |
1da177e4 | 2338 | |
19202573 | 2339 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2340 | |
1da177e4 | 2341 | return id; |
f48fd9c8 | 2342 | |
33ca954d DH |
2343 | err_wqueue: |
2344 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2345 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2346 | err: |
3df92b31 | 2347 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 2348 | |
33ca954d | 2349 | return error; |
1da177e4 LT |
2350 | } |
2351 | EXPORT_SYMBOL(hci_register_dev); | |
2352 | ||
2353 | /* Unregister HCI device */ | |
59735631 | 2354 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2355 | { |
3df92b31 | 2356 | int i, id; |
ef222013 | 2357 | |
c13854ce | 2358 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2359 | |
94324962 JH |
2360 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2361 | ||
3df92b31 SL |
2362 | id = hdev->id; |
2363 | ||
f20d09d5 | 2364 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2365 | list_del(&hdev->list); |
f20d09d5 | 2366 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2367 | |
2368 | hci_dev_do_close(hdev); | |
2369 | ||
cd4c5391 | 2370 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2371 | kfree_skb(hdev->reassembly[i]); |
2372 | ||
b9b5ef18 GP |
2373 | cancel_work_sync(&hdev->power_on); |
2374 | ||
ab81cbf9 | 2375 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2376 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2377 | hci_dev_lock(hdev); |
744cf19e | 2378 | mgmt_index_removed(hdev); |
09fd0de5 | 2379 | hci_dev_unlock(hdev); |
56e5cb86 | 2380 | } |
ab81cbf9 | 2381 | |
2e58ef3e JH |
2382 | /* mgmt_index_removed should take care of emptying the |
2383 | * pending list */ | |
2384 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2385 | ||
1da177e4 LT |
2386 | hci_notify(hdev, HCI_DEV_UNREG); |
2387 | ||
611b30f7 MH |
2388 | if (hdev->rfkill) { |
2389 | rfkill_unregister(hdev->rfkill); | |
2390 | rfkill_destroy(hdev->rfkill); | |
2391 | } | |
2392 | ||
ce242970 | 2393 | hci_del_sysfs(hdev); |
147e2d59 | 2394 | |
f48fd9c8 | 2395 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2396 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2397 | |
09fd0de5 | 2398 | hci_dev_lock(hdev); |
e2e0cacb | 2399 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2400 | hci_uuids_clear(hdev); |
55ed8ca1 | 2401 | hci_link_keys_clear(hdev); |
b899efaf | 2402 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2403 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2404 | hci_dev_unlock(hdev); |
e2e0cacb | 2405 | |
dc946bd8 | 2406 | hci_dev_put(hdev); |
3df92b31 SL |
2407 | |
2408 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2409 | } |
2410 | EXPORT_SYMBOL(hci_unregister_dev); | |
2411 | ||
2412 | /* Suspend HCI device */ | |
2413 | int hci_suspend_dev(struct hci_dev *hdev) | |
2414 | { | |
2415 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2416 | return 0; | |
2417 | } | |
2418 | EXPORT_SYMBOL(hci_suspend_dev); | |
2419 | ||
2420 | /* Resume HCI device */ | |
2421 | int hci_resume_dev(struct hci_dev *hdev) | |
2422 | { | |
2423 | hci_notify(hdev, HCI_DEV_RESUME); | |
2424 | return 0; | |
2425 | } | |
2426 | EXPORT_SYMBOL(hci_resume_dev); | |
2427 | ||
76bca880 | 2428 | /* Receive frame from HCI drivers */ |
e1a26170 | 2429 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 2430 | { |
76bca880 | 2431 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 2432 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2433 | kfree_skb(skb); |
2434 | return -ENXIO; | |
2435 | } | |
2436 | ||
d82603c6 | 2437 | /* Incoming skb */ |
76bca880 MH |
2438 | bt_cb(skb)->incoming = 1; |
2439 | ||
2440 | /* Time stamp */ | |
2441 | __net_timestamp(skb); | |
2442 | ||
76bca880 | 2443 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2444 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2445 | |
76bca880 MH |
2446 | return 0; |
2447 | } | |
2448 | EXPORT_SYMBOL(hci_recv_frame); | |
2449 | ||
33e882a5 | 2450 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2451 | int count, __u8 index) |
33e882a5 SS |
2452 | { |
2453 | int len = 0; | |
2454 | int hlen = 0; | |
2455 | int remain = count; | |
2456 | struct sk_buff *skb; | |
2457 | struct bt_skb_cb *scb; | |
2458 | ||
2459 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2460 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2461 | return -EILSEQ; |
2462 | ||
2463 | skb = hdev->reassembly[index]; | |
2464 | ||
2465 | if (!skb) { | |
2466 | switch (type) { | |
2467 | case HCI_ACLDATA_PKT: | |
2468 | len = HCI_MAX_FRAME_SIZE; | |
2469 | hlen = HCI_ACL_HDR_SIZE; | |
2470 | break; | |
2471 | case HCI_EVENT_PKT: | |
2472 | len = HCI_MAX_EVENT_SIZE; | |
2473 | hlen = HCI_EVENT_HDR_SIZE; | |
2474 | break; | |
2475 | case HCI_SCODATA_PKT: | |
2476 | len = HCI_MAX_SCO_SIZE; | |
2477 | hlen = HCI_SCO_HDR_SIZE; | |
2478 | break; | |
2479 | } | |
2480 | ||
1e429f38 | 2481 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2482 | if (!skb) |
2483 | return -ENOMEM; | |
2484 | ||
2485 | scb = (void *) skb->cb; | |
2486 | scb->expect = hlen; | |
2487 | scb->pkt_type = type; | |
2488 | ||
33e882a5 SS |
2489 | hdev->reassembly[index] = skb; |
2490 | } | |
2491 | ||
2492 | while (count) { | |
2493 | scb = (void *) skb->cb; | |
89bb46d0 | 2494 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2495 | |
2496 | memcpy(skb_put(skb, len), data, len); | |
2497 | ||
2498 | count -= len; | |
2499 | data += len; | |
2500 | scb->expect -= len; | |
2501 | remain = count; | |
2502 | ||
2503 | switch (type) { | |
2504 | case HCI_EVENT_PKT: | |
2505 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2506 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2507 | scb->expect = h->plen; | |
2508 | ||
2509 | if (skb_tailroom(skb) < scb->expect) { | |
2510 | kfree_skb(skb); | |
2511 | hdev->reassembly[index] = NULL; | |
2512 | return -ENOMEM; | |
2513 | } | |
2514 | } | |
2515 | break; | |
2516 | ||
2517 | case HCI_ACLDATA_PKT: | |
2518 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2519 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2520 | scb->expect = __le16_to_cpu(h->dlen); | |
2521 | ||
2522 | if (skb_tailroom(skb) < scb->expect) { | |
2523 | kfree_skb(skb); | |
2524 | hdev->reassembly[index] = NULL; | |
2525 | return -ENOMEM; | |
2526 | } | |
2527 | } | |
2528 | break; | |
2529 | ||
2530 | case HCI_SCODATA_PKT: | |
2531 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2532 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2533 | scb->expect = h->dlen; | |
2534 | ||
2535 | if (skb_tailroom(skb) < scb->expect) { | |
2536 | kfree_skb(skb); | |
2537 | hdev->reassembly[index] = NULL; | |
2538 | return -ENOMEM; | |
2539 | } | |
2540 | } | |
2541 | break; | |
2542 | } | |
2543 | ||
2544 | if (scb->expect == 0) { | |
2545 | /* Complete frame */ | |
2546 | ||
2547 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 2548 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
2549 | |
2550 | hdev->reassembly[index] = NULL; | |
2551 | return remain; | |
2552 | } | |
2553 | } | |
2554 | ||
2555 | return remain; | |
2556 | } | |
2557 | ||
ef222013 MH |
2558 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2559 | { | |
f39a3c06 SS |
2560 | int rem = 0; |
2561 | ||
ef222013 MH |
2562 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2563 | return -EILSEQ; | |
2564 | ||
da5f6c37 | 2565 | while (count) { |
1e429f38 | 2566 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2567 | if (rem < 0) |
2568 | return rem; | |
ef222013 | 2569 | |
f39a3c06 SS |
2570 | data += (count - rem); |
2571 | count = rem; | |
f81c6224 | 2572 | } |
ef222013 | 2573 | |
f39a3c06 | 2574 | return rem; |
ef222013 MH |
2575 | } |
2576 | EXPORT_SYMBOL(hci_recv_fragment); | |
2577 | ||
99811510 SS |
2578 | #define STREAM_REASSEMBLY 0 |
2579 | ||
2580 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2581 | { | |
2582 | int type; | |
2583 | int rem = 0; | |
2584 | ||
da5f6c37 | 2585 | while (count) { |
99811510 SS |
2586 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2587 | ||
2588 | if (!skb) { | |
2589 | struct { char type; } *pkt; | |
2590 | ||
2591 | /* Start of the frame */ | |
2592 | pkt = data; | |
2593 | type = pkt->type; | |
2594 | ||
2595 | data++; | |
2596 | count--; | |
2597 | } else | |
2598 | type = bt_cb(skb)->pkt_type; | |
2599 | ||
1e429f38 | 2600 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2601 | STREAM_REASSEMBLY); |
99811510 SS |
2602 | if (rem < 0) |
2603 | return rem; | |
2604 | ||
2605 | data += (count - rem); | |
2606 | count = rem; | |
f81c6224 | 2607 | } |
99811510 SS |
2608 | |
2609 | return rem; | |
2610 | } | |
2611 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2612 | ||
1da177e4 LT |
2613 | /* ---- Interface to upper protocols ---- */ |
2614 | ||
1da177e4 LT |
2615 | int hci_register_cb(struct hci_cb *cb) |
2616 | { | |
2617 | BT_DBG("%p name %s", cb, cb->name); | |
2618 | ||
f20d09d5 | 2619 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2620 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2621 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2622 | |
2623 | return 0; | |
2624 | } | |
2625 | EXPORT_SYMBOL(hci_register_cb); | |
2626 | ||
2627 | int hci_unregister_cb(struct hci_cb *cb) | |
2628 | { | |
2629 | BT_DBG("%p name %s", cb, cb->name); | |
2630 | ||
f20d09d5 | 2631 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2632 | list_del(&cb->list); |
f20d09d5 | 2633 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2634 | |
2635 | return 0; | |
2636 | } | |
2637 | EXPORT_SYMBOL(hci_unregister_cb); | |
2638 | ||
51086991 | 2639 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 2640 | { |
0d48d939 | 2641 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2642 | |
cd82e61c MH |
2643 | /* Time stamp */ |
2644 | __net_timestamp(skb); | |
1da177e4 | 2645 | |
cd82e61c MH |
2646 | /* Send copy to monitor */ |
2647 | hci_send_to_monitor(hdev, skb); | |
2648 | ||
2649 | if (atomic_read(&hdev->promisc)) { | |
2650 | /* Send copy to the sockets */ | |
470fe1b5 | 2651 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2652 | } |
2653 | ||
2654 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2655 | skb_orphan(skb); | |
2656 | ||
7bd8f09f | 2657 | if (hdev->send(hdev, skb) < 0) |
51086991 | 2658 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
2659 | } |
2660 | ||
3119ae95 JH |
2661 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2662 | { | |
2663 | skb_queue_head_init(&req->cmd_q); | |
2664 | req->hdev = hdev; | |
5d73e034 | 2665 | req->err = 0; |
3119ae95 JH |
2666 | } |
2667 | ||
2668 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2669 | { | |
2670 | struct hci_dev *hdev = req->hdev; | |
2671 | struct sk_buff *skb; | |
2672 | unsigned long flags; | |
2673 | ||
2674 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2675 | ||
5d73e034 AG |
2676 | /* If an error occured during request building, remove all HCI |
2677 | * commands queued on the HCI request queue. | |
2678 | */ | |
2679 | if (req->err) { | |
2680 | skb_queue_purge(&req->cmd_q); | |
2681 | return req->err; | |
2682 | } | |
2683 | ||
3119ae95 JH |
2684 | /* Do not allow empty requests */ |
2685 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2686 | return -ENODATA; |
3119ae95 JH |
2687 | |
2688 | skb = skb_peek_tail(&req->cmd_q); | |
2689 | bt_cb(skb)->req.complete = complete; | |
2690 | ||
2691 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2692 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2693 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2694 | ||
2695 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2696 | ||
2697 | return 0; | |
2698 | } | |
2699 | ||
1ca3a9d0 | 2700 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 2701 | u32 plen, const void *param) |
1da177e4 LT |
2702 | { |
2703 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2704 | struct hci_command_hdr *hdr; | |
2705 | struct sk_buff *skb; | |
2706 | ||
1da177e4 | 2707 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2708 | if (!skb) |
2709 | return NULL; | |
1da177e4 LT |
2710 | |
2711 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2712 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2713 | hdr->plen = plen; |
2714 | ||
2715 | if (plen) | |
2716 | memcpy(skb_put(skb, plen), param, plen); | |
2717 | ||
2718 | BT_DBG("skb len %d", skb->len); | |
2719 | ||
0d48d939 | 2720 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 2721 | |
1ca3a9d0 JH |
2722 | return skb; |
2723 | } | |
2724 | ||
2725 | /* Send HCI command */ | |
07dc93dd JH |
2726 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2727 | const void *param) | |
1ca3a9d0 JH |
2728 | { |
2729 | struct sk_buff *skb; | |
2730 | ||
2731 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2732 | ||
2733 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2734 | if (!skb) { | |
2735 | BT_ERR("%s no memory for command", hdev->name); | |
2736 | return -ENOMEM; | |
2737 | } | |
2738 | ||
11714b3d JH |
2739 | /* Stand-alone HCI commands must be flaged as |
2740 | * single-command requests. | |
2741 | */ | |
2742 | bt_cb(skb)->req.start = true; | |
2743 | ||
1da177e4 | 2744 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2745 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2746 | |
2747 | return 0; | |
2748 | } | |
1da177e4 | 2749 | |
71c76a17 | 2750 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
2751 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
2752 | const void *param, u8 event) | |
71c76a17 JH |
2753 | { |
2754 | struct hci_dev *hdev = req->hdev; | |
2755 | struct sk_buff *skb; | |
2756 | ||
2757 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2758 | ||
34739c1e AG |
2759 | /* If an error occured during request building, there is no point in |
2760 | * queueing the HCI command. We can simply return. | |
2761 | */ | |
2762 | if (req->err) | |
2763 | return; | |
2764 | ||
71c76a17 JH |
2765 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2766 | if (!skb) { | |
5d73e034 AG |
2767 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2768 | hdev->name, opcode); | |
2769 | req->err = -ENOMEM; | |
e348fe6b | 2770 | return; |
71c76a17 JH |
2771 | } |
2772 | ||
2773 | if (skb_queue_empty(&req->cmd_q)) | |
2774 | bt_cb(skb)->req.start = true; | |
2775 | ||
02350a72 JH |
2776 | bt_cb(skb)->req.event = event; |
2777 | ||
71c76a17 | 2778 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2779 | } |
2780 | ||
07dc93dd JH |
2781 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
2782 | const void *param) | |
02350a72 JH |
2783 | { |
2784 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2785 | } | |
2786 | ||
1da177e4 | 2787 | /* Get data from the previously sent command */ |
a9de9248 | 2788 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2789 | { |
2790 | struct hci_command_hdr *hdr; | |
2791 | ||
2792 | if (!hdev->sent_cmd) | |
2793 | return NULL; | |
2794 | ||
2795 | hdr = (void *) hdev->sent_cmd->data; | |
2796 | ||
a9de9248 | 2797 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2798 | return NULL; |
2799 | ||
f0e09510 | 2800 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2801 | |
2802 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2803 | } | |
2804 | ||
2805 | /* Send ACL data */ | |
2806 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2807 | { | |
2808 | struct hci_acl_hdr *hdr; | |
2809 | int len = skb->len; | |
2810 | ||
badff6d0 ACM |
2811 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2812 | skb_reset_transport_header(skb); | |
9c70220b | 2813 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2814 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2815 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2816 | } |
2817 | ||
ee22be7e | 2818 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2819 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2820 | { |
ee22be7e | 2821 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2822 | struct hci_dev *hdev = conn->hdev; |
2823 | struct sk_buff *list; | |
2824 | ||
087bfd99 GP |
2825 | skb->len = skb_headlen(skb); |
2826 | skb->data_len = 0; | |
2827 | ||
2828 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2829 | |
2830 | switch (hdev->dev_type) { | |
2831 | case HCI_BREDR: | |
2832 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2833 | break; | |
2834 | case HCI_AMP: | |
2835 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2836 | break; | |
2837 | default: | |
2838 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2839 | return; | |
2840 | } | |
087bfd99 | 2841 | |
70f23020 AE |
2842 | list = skb_shinfo(skb)->frag_list; |
2843 | if (!list) { | |
1da177e4 LT |
2844 | /* Non fragmented */ |
2845 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2846 | ||
73d80deb | 2847 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2848 | } else { |
2849 | /* Fragmented */ | |
2850 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2851 | ||
2852 | skb_shinfo(skb)->frag_list = NULL; | |
2853 | ||
2854 | /* Queue all fragments atomically */ | |
af3e6359 | 2855 | spin_lock(&queue->lock); |
1da177e4 | 2856 | |
73d80deb | 2857 | __skb_queue_tail(queue, skb); |
e702112f AE |
2858 | |
2859 | flags &= ~ACL_START; | |
2860 | flags |= ACL_CONT; | |
1da177e4 LT |
2861 | do { |
2862 | skb = list; list = list->next; | |
8e87d142 | 2863 | |
0d48d939 | 2864 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2865 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2866 | |
2867 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2868 | ||
73d80deb | 2869 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2870 | } while (list); |
2871 | ||
af3e6359 | 2872 | spin_unlock(&queue->lock); |
1da177e4 | 2873 | } |
73d80deb LAD |
2874 | } |
2875 | ||
2876 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2877 | { | |
ee22be7e | 2878 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2879 | |
f0e09510 | 2880 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 2881 | |
ee22be7e | 2882 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2883 | |
3eff45ea | 2884 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2885 | } |
1da177e4 LT |
2886 | |
2887 | /* Send SCO data */ | |
0d861d8b | 2888 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2889 | { |
2890 | struct hci_dev *hdev = conn->hdev; | |
2891 | struct hci_sco_hdr hdr; | |
2892 | ||
2893 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2894 | ||
aca3192c | 2895 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2896 | hdr.dlen = skb->len; |
2897 | ||
badff6d0 ACM |
2898 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2899 | skb_reset_transport_header(skb); | |
9c70220b | 2900 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 2901 | |
0d48d939 | 2902 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2903 | |
1da177e4 | 2904 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2905 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2906 | } |
1da177e4 LT |
2907 | |
2908 | /* ---- HCI TX task (outgoing data) ---- */ | |
2909 | ||
2910 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2911 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2912 | int *quote) | |
1da177e4 LT |
2913 | { |
2914 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2915 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2916 | unsigned int num = 0, min = ~0; |
1da177e4 | 2917 | |
8e87d142 | 2918 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2919 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2920 | |
2921 | rcu_read_lock(); | |
2922 | ||
2923 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2924 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2925 | continue; |
769be974 MH |
2926 | |
2927 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2928 | continue; | |
2929 | ||
1da177e4 LT |
2930 | num++; |
2931 | ||
2932 | if (c->sent < min) { | |
2933 | min = c->sent; | |
2934 | conn = c; | |
2935 | } | |
52087a79 LAD |
2936 | |
2937 | if (hci_conn_num(hdev, type) == num) | |
2938 | break; | |
1da177e4 LT |
2939 | } |
2940 | ||
bf4c6325 GP |
2941 | rcu_read_unlock(); |
2942 | ||
1da177e4 | 2943 | if (conn) { |
6ed58ec5 VT |
2944 | int cnt, q; |
2945 | ||
2946 | switch (conn->type) { | |
2947 | case ACL_LINK: | |
2948 | cnt = hdev->acl_cnt; | |
2949 | break; | |
2950 | case SCO_LINK: | |
2951 | case ESCO_LINK: | |
2952 | cnt = hdev->sco_cnt; | |
2953 | break; | |
2954 | case LE_LINK: | |
2955 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2956 | break; | |
2957 | default: | |
2958 | cnt = 0; | |
2959 | BT_ERR("Unknown link type"); | |
2960 | } | |
2961 | ||
2962 | q = cnt / num; | |
1da177e4 LT |
2963 | *quote = q ? q : 1; |
2964 | } else | |
2965 | *quote = 0; | |
2966 | ||
2967 | BT_DBG("conn %p quote %d", conn, *quote); | |
2968 | return conn; | |
2969 | } | |
2970 | ||
6039aa73 | 2971 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2972 | { |
2973 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2974 | struct hci_conn *c; |
1da177e4 | 2975 | |
bae1f5d9 | 2976 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2977 | |
bf4c6325 GP |
2978 | rcu_read_lock(); |
2979 | ||
1da177e4 | 2980 | /* Kill stalled connections */ |
bf4c6325 | 2981 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 2982 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
2983 | BT_ERR("%s killing stalled connection %pMR", |
2984 | hdev->name, &c->dst); | |
bed71748 | 2985 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2986 | } |
2987 | } | |
bf4c6325 GP |
2988 | |
2989 | rcu_read_unlock(); | |
1da177e4 LT |
2990 | } |
2991 | ||
6039aa73 GP |
2992 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2993 | int *quote) | |
1da177e4 | 2994 | { |
73d80deb LAD |
2995 | struct hci_conn_hash *h = &hdev->conn_hash; |
2996 | struct hci_chan *chan = NULL; | |
abc5de8f | 2997 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2998 | struct hci_conn *conn; |
73d80deb LAD |
2999 | int cnt, q, conn_num = 0; |
3000 | ||
3001 | BT_DBG("%s", hdev->name); | |
3002 | ||
bf4c6325 GP |
3003 | rcu_read_lock(); |
3004 | ||
3005 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3006 | struct hci_chan *tmp; |
3007 | ||
3008 | if (conn->type != type) | |
3009 | continue; | |
3010 | ||
3011 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3012 | continue; | |
3013 | ||
3014 | conn_num++; | |
3015 | ||
8192edef | 3016 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3017 | struct sk_buff *skb; |
3018 | ||
3019 | if (skb_queue_empty(&tmp->data_q)) | |
3020 | continue; | |
3021 | ||
3022 | skb = skb_peek(&tmp->data_q); | |
3023 | if (skb->priority < cur_prio) | |
3024 | continue; | |
3025 | ||
3026 | if (skb->priority > cur_prio) { | |
3027 | num = 0; | |
3028 | min = ~0; | |
3029 | cur_prio = skb->priority; | |
3030 | } | |
3031 | ||
3032 | num++; | |
3033 | ||
3034 | if (conn->sent < min) { | |
3035 | min = conn->sent; | |
3036 | chan = tmp; | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | if (hci_conn_num(hdev, type) == conn_num) | |
3041 | break; | |
3042 | } | |
3043 | ||
bf4c6325 GP |
3044 | rcu_read_unlock(); |
3045 | ||
73d80deb LAD |
3046 | if (!chan) |
3047 | return NULL; | |
3048 | ||
3049 | switch (chan->conn->type) { | |
3050 | case ACL_LINK: | |
3051 | cnt = hdev->acl_cnt; | |
3052 | break; | |
bd1eb66b AE |
3053 | case AMP_LINK: |
3054 | cnt = hdev->block_cnt; | |
3055 | break; | |
73d80deb LAD |
3056 | case SCO_LINK: |
3057 | case ESCO_LINK: | |
3058 | cnt = hdev->sco_cnt; | |
3059 | break; | |
3060 | case LE_LINK: | |
3061 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3062 | break; | |
3063 | default: | |
3064 | cnt = 0; | |
3065 | BT_ERR("Unknown link type"); | |
3066 | } | |
3067 | ||
3068 | q = cnt / num; | |
3069 | *quote = q ? q : 1; | |
3070 | BT_DBG("chan %p quote %d", chan, *quote); | |
3071 | return chan; | |
3072 | } | |
3073 | ||
02b20f0b LAD |
3074 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3075 | { | |
3076 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3077 | struct hci_conn *conn; | |
3078 | int num = 0; | |
3079 | ||
3080 | BT_DBG("%s", hdev->name); | |
3081 | ||
bf4c6325 GP |
3082 | rcu_read_lock(); |
3083 | ||
3084 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3085 | struct hci_chan *chan; |
3086 | ||
3087 | if (conn->type != type) | |
3088 | continue; | |
3089 | ||
3090 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3091 | continue; | |
3092 | ||
3093 | num++; | |
3094 | ||
8192edef | 3095 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3096 | struct sk_buff *skb; |
3097 | ||
3098 | if (chan->sent) { | |
3099 | chan->sent = 0; | |
3100 | continue; | |
3101 | } | |
3102 | ||
3103 | if (skb_queue_empty(&chan->data_q)) | |
3104 | continue; | |
3105 | ||
3106 | skb = skb_peek(&chan->data_q); | |
3107 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3108 | continue; | |
3109 | ||
3110 | skb->priority = HCI_PRIO_MAX - 1; | |
3111 | ||
3112 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3113 | skb->priority); |
02b20f0b LAD |
3114 | } |
3115 | ||
3116 | if (hci_conn_num(hdev, type) == num) | |
3117 | break; | |
3118 | } | |
bf4c6325 GP |
3119 | |
3120 | rcu_read_unlock(); | |
3121 | ||
02b20f0b LAD |
3122 | } |
3123 | ||
b71d385a AE |
3124 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3125 | { | |
3126 | /* Calculate count of blocks used by this packet */ | |
3127 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3128 | } | |
3129 | ||
6039aa73 | 3130 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3131 | { |
1da177e4 LT |
3132 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3133 | /* ACL tx timeout must be longer than maximum | |
3134 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3135 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3136 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3137 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3138 | } |
63d2bc1b | 3139 | } |
1da177e4 | 3140 | |
6039aa73 | 3141 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3142 | { |
3143 | unsigned int cnt = hdev->acl_cnt; | |
3144 | struct hci_chan *chan; | |
3145 | struct sk_buff *skb; | |
3146 | int quote; | |
3147 | ||
3148 | __check_timeout(hdev, cnt); | |
04837f64 | 3149 | |
73d80deb | 3150 | while (hdev->acl_cnt && |
a8c5fb1a | 3151 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3152 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3153 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3154 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3155 | skb->len, skb->priority); |
73d80deb | 3156 | |
ec1cce24 LAD |
3157 | /* Stop if priority has changed */ |
3158 | if (skb->priority < priority) | |
3159 | break; | |
3160 | ||
3161 | skb = skb_dequeue(&chan->data_q); | |
3162 | ||
73d80deb | 3163 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3164 | bt_cb(skb)->force_active); |
04837f64 | 3165 | |
57d17d70 | 3166 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3167 | hdev->acl_last_tx = jiffies; |
3168 | ||
3169 | hdev->acl_cnt--; | |
73d80deb LAD |
3170 | chan->sent++; |
3171 | chan->conn->sent++; | |
1da177e4 LT |
3172 | } |
3173 | } | |
02b20f0b LAD |
3174 | |
3175 | if (cnt != hdev->acl_cnt) | |
3176 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3177 | } |
3178 | ||
6039aa73 | 3179 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3180 | { |
63d2bc1b | 3181 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3182 | struct hci_chan *chan; |
3183 | struct sk_buff *skb; | |
3184 | int quote; | |
bd1eb66b | 3185 | u8 type; |
b71d385a | 3186 | |
63d2bc1b | 3187 | __check_timeout(hdev, cnt); |
b71d385a | 3188 | |
bd1eb66b AE |
3189 | BT_DBG("%s", hdev->name); |
3190 | ||
3191 | if (hdev->dev_type == HCI_AMP) | |
3192 | type = AMP_LINK; | |
3193 | else | |
3194 | type = ACL_LINK; | |
3195 | ||
b71d385a | 3196 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3197 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3198 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3199 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3200 | int blocks; | |
3201 | ||
3202 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3203 | skb->len, skb->priority); |
b71d385a AE |
3204 | |
3205 | /* Stop if priority has changed */ | |
3206 | if (skb->priority < priority) | |
3207 | break; | |
3208 | ||
3209 | skb = skb_dequeue(&chan->data_q); | |
3210 | ||
3211 | blocks = __get_blocks(hdev, skb); | |
3212 | if (blocks > hdev->block_cnt) | |
3213 | return; | |
3214 | ||
3215 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3216 | bt_cb(skb)->force_active); |
b71d385a | 3217 | |
57d17d70 | 3218 | hci_send_frame(hdev, skb); |
b71d385a AE |
3219 | hdev->acl_last_tx = jiffies; |
3220 | ||
3221 | hdev->block_cnt -= blocks; | |
3222 | quote -= blocks; | |
3223 | ||
3224 | chan->sent += blocks; | |
3225 | chan->conn->sent += blocks; | |
3226 | } | |
3227 | } | |
3228 | ||
3229 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3230 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3231 | } |
3232 | ||
6039aa73 | 3233 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3234 | { |
3235 | BT_DBG("%s", hdev->name); | |
3236 | ||
bd1eb66b AE |
3237 | /* No ACL link over BR/EDR controller */ |
3238 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3239 | return; | |
3240 | ||
3241 | /* No AMP link over AMP controller */ | |
3242 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3243 | return; |
3244 | ||
3245 | switch (hdev->flow_ctl_mode) { | |
3246 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3247 | hci_sched_acl_pkt(hdev); | |
3248 | break; | |
3249 | ||
3250 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3251 | hci_sched_acl_blk(hdev); | |
3252 | break; | |
3253 | } | |
3254 | } | |
3255 | ||
1da177e4 | 3256 | /* Schedule SCO */ |
6039aa73 | 3257 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3258 | { |
3259 | struct hci_conn *conn; | |
3260 | struct sk_buff *skb; | |
3261 | int quote; | |
3262 | ||
3263 | BT_DBG("%s", hdev->name); | |
3264 | ||
52087a79 LAD |
3265 | if (!hci_conn_num(hdev, SCO_LINK)) |
3266 | return; | |
3267 | ||
1da177e4 LT |
3268 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3269 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3270 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3271 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3272 | |
3273 | conn->sent++; | |
3274 | if (conn->sent == ~0) | |
3275 | conn->sent = 0; | |
3276 | } | |
3277 | } | |
3278 | } | |
3279 | ||
6039aa73 | 3280 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3281 | { |
3282 | struct hci_conn *conn; | |
3283 | struct sk_buff *skb; | |
3284 | int quote; | |
3285 | ||
3286 | BT_DBG("%s", hdev->name); | |
3287 | ||
52087a79 LAD |
3288 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3289 | return; | |
3290 | ||
8fc9ced3 GP |
3291 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3292 | "e))) { | |
b6a0dc82 MH |
3293 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3294 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3295 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3296 | |
3297 | conn->sent++; | |
3298 | if (conn->sent == ~0) | |
3299 | conn->sent = 0; | |
3300 | } | |
3301 | } | |
3302 | } | |
3303 | ||
6039aa73 | 3304 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3305 | { |
73d80deb | 3306 | struct hci_chan *chan; |
6ed58ec5 | 3307 | struct sk_buff *skb; |
02b20f0b | 3308 | int quote, cnt, tmp; |
6ed58ec5 VT |
3309 | |
3310 | BT_DBG("%s", hdev->name); | |
3311 | ||
52087a79 LAD |
3312 | if (!hci_conn_num(hdev, LE_LINK)) |
3313 | return; | |
3314 | ||
6ed58ec5 VT |
3315 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3316 | /* LE tx timeout must be longer than maximum | |
3317 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3318 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3319 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3320 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3321 | } |
3322 | ||
3323 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3324 | tmp = cnt; |
73d80deb | 3325 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3326 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3327 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3328 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3329 | skb->len, skb->priority); |
6ed58ec5 | 3330 | |
ec1cce24 LAD |
3331 | /* Stop if priority has changed */ |
3332 | if (skb->priority < priority) | |
3333 | break; | |
3334 | ||
3335 | skb = skb_dequeue(&chan->data_q); | |
3336 | ||
57d17d70 | 3337 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3338 | hdev->le_last_tx = jiffies; |
3339 | ||
3340 | cnt--; | |
73d80deb LAD |
3341 | chan->sent++; |
3342 | chan->conn->sent++; | |
6ed58ec5 VT |
3343 | } |
3344 | } | |
73d80deb | 3345 | |
6ed58ec5 VT |
3346 | if (hdev->le_pkts) |
3347 | hdev->le_cnt = cnt; | |
3348 | else | |
3349 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3350 | |
3351 | if (cnt != tmp) | |
3352 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3353 | } |
3354 | ||
3eff45ea | 3355 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3356 | { |
3eff45ea | 3357 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3358 | struct sk_buff *skb; |
3359 | ||
6ed58ec5 | 3360 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3361 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3362 | |
52de599e MH |
3363 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
3364 | /* Schedule queues and send stuff to HCI driver */ | |
3365 | hci_sched_acl(hdev); | |
3366 | hci_sched_sco(hdev); | |
3367 | hci_sched_esco(hdev); | |
3368 | hci_sched_le(hdev); | |
3369 | } | |
6ed58ec5 | 3370 | |
1da177e4 LT |
3371 | /* Send next queued raw (unknown type) packet */ |
3372 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3373 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3374 | } |
3375 | ||
25985edc | 3376 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3377 | |
3378 | /* ACL data packet */ | |
6039aa73 | 3379 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3380 | { |
3381 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3382 | struct hci_conn *conn; | |
3383 | __u16 handle, flags; | |
3384 | ||
3385 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3386 | ||
3387 | handle = __le16_to_cpu(hdr->handle); | |
3388 | flags = hci_flags(handle); | |
3389 | handle = hci_handle(handle); | |
3390 | ||
f0e09510 | 3391 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3392 | handle, flags); |
1da177e4 LT |
3393 | |
3394 | hdev->stat.acl_rx++; | |
3395 | ||
3396 | hci_dev_lock(hdev); | |
3397 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3398 | hci_dev_unlock(hdev); | |
8e87d142 | 3399 | |
1da177e4 | 3400 | if (conn) { |
65983fc7 | 3401 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3402 | |
1da177e4 | 3403 | /* Send to upper protocol */ |
686ebf28 UF |
3404 | l2cap_recv_acldata(conn, skb, flags); |
3405 | return; | |
1da177e4 | 3406 | } else { |
8e87d142 | 3407 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3408 | hdev->name, handle); |
1da177e4 LT |
3409 | } |
3410 | ||
3411 | kfree_skb(skb); | |
3412 | } | |
3413 | ||
3414 | /* SCO data packet */ | |
6039aa73 | 3415 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3416 | { |
3417 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3418 | struct hci_conn *conn; | |
3419 | __u16 handle; | |
3420 | ||
3421 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3422 | ||
3423 | handle = __le16_to_cpu(hdr->handle); | |
3424 | ||
f0e09510 | 3425 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3426 | |
3427 | hdev->stat.sco_rx++; | |
3428 | ||
3429 | hci_dev_lock(hdev); | |
3430 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3431 | hci_dev_unlock(hdev); | |
3432 | ||
3433 | if (conn) { | |
1da177e4 | 3434 | /* Send to upper protocol */ |
686ebf28 UF |
3435 | sco_recv_scodata(conn, skb); |
3436 | return; | |
1da177e4 | 3437 | } else { |
8e87d142 | 3438 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3439 | hdev->name, handle); |
1da177e4 LT |
3440 | } |
3441 | ||
3442 | kfree_skb(skb); | |
3443 | } | |
3444 | ||
9238f36a JH |
3445 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3446 | { | |
3447 | struct sk_buff *skb; | |
3448 | ||
3449 | skb = skb_peek(&hdev->cmd_q); | |
3450 | if (!skb) | |
3451 | return true; | |
3452 | ||
3453 | return bt_cb(skb)->req.start; | |
3454 | } | |
3455 | ||
42c6b129 JH |
3456 | static void hci_resend_last(struct hci_dev *hdev) |
3457 | { | |
3458 | struct hci_command_hdr *sent; | |
3459 | struct sk_buff *skb; | |
3460 | u16 opcode; | |
3461 | ||
3462 | if (!hdev->sent_cmd) | |
3463 | return; | |
3464 | ||
3465 | sent = (void *) hdev->sent_cmd->data; | |
3466 | opcode = __le16_to_cpu(sent->opcode); | |
3467 | if (opcode == HCI_OP_RESET) | |
3468 | return; | |
3469 | ||
3470 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3471 | if (!skb) | |
3472 | return; | |
3473 | ||
3474 | skb_queue_head(&hdev->cmd_q, skb); | |
3475 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3476 | } | |
3477 | ||
9238f36a JH |
3478 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3479 | { | |
3480 | hci_req_complete_t req_complete = NULL; | |
3481 | struct sk_buff *skb; | |
3482 | unsigned long flags; | |
3483 | ||
3484 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3485 | ||
42c6b129 JH |
3486 | /* If the completed command doesn't match the last one that was |
3487 | * sent we need to do special handling of it. | |
9238f36a | 3488 | */ |
42c6b129 JH |
3489 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3490 | /* Some CSR based controllers generate a spontaneous | |
3491 | * reset complete event during init and any pending | |
3492 | * command will never be completed. In such a case we | |
3493 | * need to resend whatever was the last sent | |
3494 | * command. | |
3495 | */ | |
3496 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3497 | hci_resend_last(hdev); | |
3498 | ||
9238f36a | 3499 | return; |
42c6b129 | 3500 | } |
9238f36a JH |
3501 | |
3502 | /* If the command succeeded and there's still more commands in | |
3503 | * this request the request is not yet complete. | |
3504 | */ | |
3505 | if (!status && !hci_req_is_complete(hdev)) | |
3506 | return; | |
3507 | ||
3508 | /* If this was the last command in a request the complete | |
3509 | * callback would be found in hdev->sent_cmd instead of the | |
3510 | * command queue (hdev->cmd_q). | |
3511 | */ | |
3512 | if (hdev->sent_cmd) { | |
3513 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
3514 | |
3515 | if (req_complete) { | |
3516 | /* We must set the complete callback to NULL to | |
3517 | * avoid calling the callback more than once if | |
3518 | * this function gets called again. | |
3519 | */ | |
3520 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
3521 | ||
9238f36a | 3522 | goto call_complete; |
53e21fbc | 3523 | } |
9238f36a JH |
3524 | } |
3525 | ||
3526 | /* Remove all pending commands belonging to this request */ | |
3527 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3528 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3529 | if (bt_cb(skb)->req.start) { | |
3530 | __skb_queue_head(&hdev->cmd_q, skb); | |
3531 | break; | |
3532 | } | |
3533 | ||
3534 | req_complete = bt_cb(skb)->req.complete; | |
3535 | kfree_skb(skb); | |
3536 | } | |
3537 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3538 | ||
3539 | call_complete: | |
3540 | if (req_complete) | |
3541 | req_complete(hdev, status); | |
3542 | } | |
3543 | ||
b78752cc | 3544 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3545 | { |
b78752cc | 3546 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3547 | struct sk_buff *skb; |
3548 | ||
3549 | BT_DBG("%s", hdev->name); | |
3550 | ||
1da177e4 | 3551 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3552 | /* Send copy to monitor */ |
3553 | hci_send_to_monitor(hdev, skb); | |
3554 | ||
1da177e4 LT |
3555 | if (atomic_read(&hdev->promisc)) { |
3556 | /* Send copy to the sockets */ | |
470fe1b5 | 3557 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3558 | } |
3559 | ||
0736cfa8 MH |
3560 | if (test_bit(HCI_RAW, &hdev->flags) || |
3561 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
3562 | kfree_skb(skb); |
3563 | continue; | |
3564 | } | |
3565 | ||
3566 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3567 | /* Don't process data packets in this states. */ | |
0d48d939 | 3568 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3569 | case HCI_ACLDATA_PKT: |
3570 | case HCI_SCODATA_PKT: | |
3571 | kfree_skb(skb); | |
3572 | continue; | |
3ff50b79 | 3573 | } |
1da177e4 LT |
3574 | } |
3575 | ||
3576 | /* Process frame */ | |
0d48d939 | 3577 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3578 | case HCI_EVENT_PKT: |
b78752cc | 3579 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3580 | hci_event_packet(hdev, skb); |
3581 | break; | |
3582 | ||
3583 | case HCI_ACLDATA_PKT: | |
3584 | BT_DBG("%s ACL data packet", hdev->name); | |
3585 | hci_acldata_packet(hdev, skb); | |
3586 | break; | |
3587 | ||
3588 | case HCI_SCODATA_PKT: | |
3589 | BT_DBG("%s SCO data packet", hdev->name); | |
3590 | hci_scodata_packet(hdev, skb); | |
3591 | break; | |
3592 | ||
3593 | default: | |
3594 | kfree_skb(skb); | |
3595 | break; | |
3596 | } | |
3597 | } | |
1da177e4 LT |
3598 | } |
3599 | ||
c347b765 | 3600 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3601 | { |
c347b765 | 3602 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3603 | struct sk_buff *skb; |
3604 | ||
2104786b AE |
3605 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3606 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3607 | |
1da177e4 | 3608 | /* Send queued commands */ |
5a08ecce AE |
3609 | if (atomic_read(&hdev->cmd_cnt)) { |
3610 | skb = skb_dequeue(&hdev->cmd_q); | |
3611 | if (!skb) | |
3612 | return; | |
3613 | ||
7585b97a | 3614 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3615 | |
a675d7f1 | 3616 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 3617 | if (hdev->sent_cmd) { |
1da177e4 | 3618 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 3619 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
3620 | if (test_bit(HCI_RESET, &hdev->flags)) |
3621 | del_timer(&hdev->cmd_timer); | |
3622 | else | |
3623 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3624 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3625 | } else { |
3626 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3627 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3628 | } |
3629 | } | |
3630 | } |