Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
1da177e4 | 30 | |
8c520a59 | 31 | #include <linux/rfkill.h> |
1da177e4 LT |
32 | |
33 | #include <net/bluetooth/bluetooth.h> | |
34 | #include <net/bluetooth/hci_core.h> | |
35 | ||
b78752cc | 36 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 37 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 38 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* HCI device list */ |
41 | LIST_HEAD(hci_dev_list); | |
42 | DEFINE_RWLOCK(hci_dev_list_lock); | |
43 | ||
44 | /* HCI callback list */ | |
45 | LIST_HEAD(hci_cb_list); | |
46 | DEFINE_RWLOCK(hci_cb_list_lock); | |
47 | ||
3df92b31 SL |
48 | /* HCI ID Numbering */ |
49 | static DEFINE_IDA(hci_index_ida); | |
50 | ||
1da177e4 LT |
51 | /* ---- HCI notifications ---- */ |
52 | ||
6516455d | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 54 | { |
040030ef | 55 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* ---- HCI requests ---- */ | |
59 | ||
42c6b129 | 60 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 61 | { |
42c6b129 | 62 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
63 | |
64 | if (hdev->req_status == HCI_REQ_PEND) { | |
65 | hdev->req_result = result; | |
66 | hdev->req_status = HCI_REQ_DONE; | |
67 | wake_up_interruptible(&hdev->req_wait_q); | |
68 | } | |
69 | } | |
70 | ||
71 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
72 | { | |
73 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
74 | ||
75 | if (hdev->req_status == HCI_REQ_PEND) { | |
76 | hdev->req_result = err; | |
77 | hdev->req_status = HCI_REQ_CANCELED; | |
78 | wake_up_interruptible(&hdev->req_wait_q); | |
79 | } | |
80 | } | |
81 | ||
77a63e0a FW |
82 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
83 | u8 event) | |
75e84b7c JH |
84 | { |
85 | struct hci_ev_cmd_complete *ev; | |
86 | struct hci_event_hdr *hdr; | |
87 | struct sk_buff *skb; | |
88 | ||
89 | hci_dev_lock(hdev); | |
90 | ||
91 | skb = hdev->recv_evt; | |
92 | hdev->recv_evt = NULL; | |
93 | ||
94 | hci_dev_unlock(hdev); | |
95 | ||
96 | if (!skb) | |
97 | return ERR_PTR(-ENODATA); | |
98 | ||
99 | if (skb->len < sizeof(*hdr)) { | |
100 | BT_ERR("Too short HCI event"); | |
101 | goto failed; | |
102 | } | |
103 | ||
104 | hdr = (void *) skb->data; | |
105 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
106 | ||
7b1abbbe JH |
107 | if (event) { |
108 | if (hdr->evt != event) | |
109 | goto failed; | |
110 | return skb; | |
111 | } | |
112 | ||
75e84b7c JH |
113 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
114 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
115 | goto failed; | |
116 | } | |
117 | ||
118 | if (skb->len < sizeof(*ev)) { | |
119 | BT_ERR("Too short cmd_complete event"); | |
120 | goto failed; | |
121 | } | |
122 | ||
123 | ev = (void *) skb->data; | |
124 | skb_pull(skb, sizeof(*ev)); | |
125 | ||
126 | if (opcode == __le16_to_cpu(ev->opcode)) | |
127 | return skb; | |
128 | ||
129 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
130 | __le16_to_cpu(ev->opcode)); | |
131 | ||
132 | failed: | |
133 | kfree_skb(skb); | |
134 | return ERR_PTR(-ENODATA); | |
135 | } | |
136 | ||
7b1abbbe | 137 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 138 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
139 | { |
140 | DECLARE_WAITQUEUE(wait, current); | |
141 | struct hci_request req; | |
142 | int err = 0; | |
143 | ||
144 | BT_DBG("%s", hdev->name); | |
145 | ||
146 | hci_req_init(&req, hdev); | |
147 | ||
7b1abbbe | 148 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
149 | |
150 | hdev->req_status = HCI_REQ_PEND; | |
151 | ||
152 | err = hci_req_run(&req, hci_req_sync_complete); | |
153 | if (err < 0) | |
154 | return ERR_PTR(err); | |
155 | ||
156 | add_wait_queue(&hdev->req_wait_q, &wait); | |
157 | set_current_state(TASK_INTERRUPTIBLE); | |
158 | ||
159 | schedule_timeout(timeout); | |
160 | ||
161 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
162 | ||
163 | if (signal_pending(current)) | |
164 | return ERR_PTR(-EINTR); | |
165 | ||
166 | switch (hdev->req_status) { | |
167 | case HCI_REQ_DONE: | |
168 | err = -bt_to_errno(hdev->req_result); | |
169 | break; | |
170 | ||
171 | case HCI_REQ_CANCELED: | |
172 | err = -hdev->req_result; | |
173 | break; | |
174 | ||
175 | default: | |
176 | err = -ETIMEDOUT; | |
177 | break; | |
178 | } | |
179 | ||
180 | hdev->req_status = hdev->req_result = 0; | |
181 | ||
182 | BT_DBG("%s end: err %d", hdev->name, err); | |
183 | ||
184 | if (err < 0) | |
185 | return ERR_PTR(err); | |
186 | ||
7b1abbbe JH |
187 | return hci_get_cmd_complete(hdev, opcode, event); |
188 | } | |
189 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
190 | ||
191 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 192 | const void *param, u32 timeout) |
7b1abbbe JH |
193 | { |
194 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
195 | } |
196 | EXPORT_SYMBOL(__hci_cmd_sync); | |
197 | ||
1da177e4 | 198 | /* Execute request and wait for completion. */ |
01178cd4 | 199 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
200 | void (*func)(struct hci_request *req, |
201 | unsigned long opt), | |
01178cd4 | 202 | unsigned long opt, __u32 timeout) |
1da177e4 | 203 | { |
42c6b129 | 204 | struct hci_request req; |
1da177e4 LT |
205 | DECLARE_WAITQUEUE(wait, current); |
206 | int err = 0; | |
207 | ||
208 | BT_DBG("%s start", hdev->name); | |
209 | ||
42c6b129 JH |
210 | hci_req_init(&req, hdev); |
211 | ||
1da177e4 LT |
212 | hdev->req_status = HCI_REQ_PEND; |
213 | ||
42c6b129 | 214 | func(&req, opt); |
53cce22d | 215 | |
42c6b129 JH |
216 | err = hci_req_run(&req, hci_req_sync_complete); |
217 | if (err < 0) { | |
53cce22d | 218 | hdev->req_status = 0; |
920c8300 AG |
219 | |
220 | /* ENODATA means the HCI request command queue is empty. | |
221 | * This can happen when a request with conditionals doesn't | |
222 | * trigger any commands to be sent. This is normal behavior | |
223 | * and should not trigger an error return. | |
42c6b129 | 224 | */ |
920c8300 AG |
225 | if (err == -ENODATA) |
226 | return 0; | |
227 | ||
228 | return err; | |
53cce22d JH |
229 | } |
230 | ||
bc4445c7 AG |
231 | add_wait_queue(&hdev->req_wait_q, &wait); |
232 | set_current_state(TASK_INTERRUPTIBLE); | |
233 | ||
1da177e4 LT |
234 | schedule_timeout(timeout); |
235 | ||
236 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
237 | ||
238 | if (signal_pending(current)) | |
239 | return -EINTR; | |
240 | ||
241 | switch (hdev->req_status) { | |
242 | case HCI_REQ_DONE: | |
e175072f | 243 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
244 | break; |
245 | ||
246 | case HCI_REQ_CANCELED: | |
247 | err = -hdev->req_result; | |
248 | break; | |
249 | ||
250 | default: | |
251 | err = -ETIMEDOUT; | |
252 | break; | |
3ff50b79 | 253 | } |
1da177e4 | 254 | |
a5040efa | 255 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
256 | |
257 | BT_DBG("%s end: err %d", hdev->name, err); | |
258 | ||
259 | return err; | |
260 | } | |
261 | ||
01178cd4 | 262 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
263 | void (*req)(struct hci_request *req, |
264 | unsigned long opt), | |
01178cd4 | 265 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
266 | { |
267 | int ret; | |
268 | ||
7c6a329e MH |
269 | if (!test_bit(HCI_UP, &hdev->flags)) |
270 | return -ENETDOWN; | |
271 | ||
1da177e4 LT |
272 | /* Serialize all requests */ |
273 | hci_req_lock(hdev); | |
01178cd4 | 274 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
275 | hci_req_unlock(hdev); |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
42c6b129 | 280 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 281 | { |
42c6b129 | 282 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
283 | |
284 | /* Reset device */ | |
42c6b129 JH |
285 | set_bit(HCI_RESET, &req->hdev->flags); |
286 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
287 | } |
288 | ||
42c6b129 | 289 | static void bredr_init(struct hci_request *req) |
1da177e4 | 290 | { |
42c6b129 | 291 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 292 | |
1da177e4 | 293 | /* Read Local Supported Features */ |
42c6b129 | 294 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 295 | |
1143e5a6 | 296 | /* Read Local Version */ |
42c6b129 | 297 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
298 | |
299 | /* Read BD Address */ | |
42c6b129 | 300 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
301 | } |
302 | ||
42c6b129 | 303 | static void amp_init(struct hci_request *req) |
e61ef499 | 304 | { |
42c6b129 | 305 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 306 | |
e61ef499 | 307 | /* Read Local Version */ |
42c6b129 | 308 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 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 | { |
2177bab5 JH |
356 | __le16 param; |
357 | __u8 flt_type; | |
358 | ||
359 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 360 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
361 | |
362 | /* Read Class of Device */ | |
42c6b129 | 363 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
364 | |
365 | /* Read Local Name */ | |
42c6b129 | 366 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
367 | |
368 | /* Read Voice Setting */ | |
42c6b129 | 369 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 JH |
370 | |
371 | /* Clear Event Filters */ | |
372 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 373 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
374 | |
375 | /* Connection accept timeout ~20 secs */ | |
376 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 377 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 378 | |
f332ec66 JH |
379 | /* Read page scan parameters */ |
380 | if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
381 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
382 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
383 | } | |
2177bab5 JH |
384 | } |
385 | ||
42c6b129 | 386 | static void le_setup(struct hci_request *req) |
2177bab5 | 387 | { |
c73eee91 JH |
388 | struct hci_dev *hdev = req->hdev; |
389 | ||
2177bab5 | 390 | /* Read LE Buffer Size */ |
42c6b129 | 391 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
392 | |
393 | /* Read LE Local Supported Features */ | |
42c6b129 | 394 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
395 | |
396 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 397 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
398 | |
399 | /* Read LE White List Size */ | |
42c6b129 | 400 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
401 | |
402 | /* Read LE Supported States */ | |
42c6b129 | 403 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
404 | |
405 | /* LE-only controllers have LE implicitly enabled */ | |
406 | if (!lmp_bredr_capable(hdev)) | |
407 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
408 | } |
409 | ||
410 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
411 | { | |
412 | if (lmp_ext_inq_capable(hdev)) | |
413 | return 0x02; | |
414 | ||
415 | if (lmp_inq_rssi_capable(hdev)) | |
416 | return 0x01; | |
417 | ||
418 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
419 | hdev->lmp_subver == 0x0757) | |
420 | return 0x01; | |
421 | ||
422 | if (hdev->manufacturer == 15) { | |
423 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
424 | return 0x01; | |
425 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
426 | return 0x01; | |
427 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
428 | return 0x01; | |
429 | } | |
430 | ||
431 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
432 | hdev->lmp_subver == 0x1805) | |
433 | return 0x01; | |
434 | ||
435 | return 0x00; | |
436 | } | |
437 | ||
42c6b129 | 438 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
439 | { |
440 | u8 mode; | |
441 | ||
42c6b129 | 442 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 443 | |
42c6b129 | 444 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
445 | } |
446 | ||
42c6b129 | 447 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 448 | { |
42c6b129 JH |
449 | struct hci_dev *hdev = req->hdev; |
450 | ||
2177bab5 JH |
451 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
452 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
453 | * command otherwise. | |
454 | */ | |
455 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
456 | ||
457 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
458 | * any event mask for pre 1.2 devices. | |
459 | */ | |
460 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
461 | return; | |
462 | ||
463 | if (lmp_bredr_capable(hdev)) { | |
464 | events[4] |= 0x01; /* Flow Specification Complete */ | |
465 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
466 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
467 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
468 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
469 | } else { |
470 | /* Use a different default for LE-only devices */ | |
471 | memset(events, 0, sizeof(events)); | |
472 | events[0] |= 0x10; /* Disconnection Complete */ | |
473 | events[0] |= 0x80; /* Encryption Change */ | |
474 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
475 | events[1] |= 0x20; /* Command Complete */ | |
476 | events[1] |= 0x40; /* Command Status */ | |
477 | events[1] |= 0x80; /* Hardware Error */ | |
478 | events[2] |= 0x04; /* Number of Completed Packets */ | |
479 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
480 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
481 | } |
482 | ||
483 | if (lmp_inq_rssi_capable(hdev)) | |
484 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
485 | ||
486 | if (lmp_sniffsubr_capable(hdev)) | |
487 | events[5] |= 0x20; /* Sniff Subrating */ | |
488 | ||
489 | if (lmp_pause_enc_capable(hdev)) | |
490 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
491 | ||
492 | if (lmp_ext_inq_capable(hdev)) | |
493 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
494 | ||
495 | if (lmp_no_flush_capable(hdev)) | |
496 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
497 | ||
498 | if (lmp_lsto_capable(hdev)) | |
499 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
500 | ||
501 | if (lmp_ssp_capable(hdev)) { | |
502 | events[6] |= 0x01; /* IO Capability Request */ | |
503 | events[6] |= 0x02; /* IO Capability Response */ | |
504 | events[6] |= 0x04; /* User Confirmation Request */ | |
505 | events[6] |= 0x08; /* User Passkey Request */ | |
506 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
507 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
508 | events[7] |= 0x04; /* User Passkey Notification */ | |
509 | events[7] |= 0x08; /* Keypress Notification */ | |
510 | events[7] |= 0x10; /* Remote Host Supported | |
511 | * Features Notification | |
512 | */ | |
513 | } | |
514 | ||
515 | if (lmp_le_capable(hdev)) | |
516 | events[7] |= 0x20; /* LE Meta-Event */ | |
517 | ||
42c6b129 | 518 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
519 | |
520 | if (lmp_le_capable(hdev)) { | |
521 | memset(events, 0, sizeof(events)); | |
522 | events[0] = 0x1f; | |
42c6b129 JH |
523 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
524 | sizeof(events), events); | |
2177bab5 JH |
525 | } |
526 | } | |
527 | ||
42c6b129 | 528 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 529 | { |
42c6b129 JH |
530 | struct hci_dev *hdev = req->hdev; |
531 | ||
2177bab5 | 532 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 533 | bredr_setup(req); |
56f87901 JH |
534 | else |
535 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
536 | |
537 | if (lmp_le_capable(hdev)) | |
42c6b129 | 538 | le_setup(req); |
2177bab5 | 539 | |
42c6b129 | 540 | hci_setup_event_mask(req); |
2177bab5 | 541 | |
3f8e2d75 JH |
542 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
543 | * local supported commands HCI command. | |
544 | */ | |
545 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 546 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
547 | |
548 | if (lmp_ssp_capable(hdev)) { | |
549 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
550 | u8 mode = 0x01; | |
42c6b129 JH |
551 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
552 | sizeof(mode), &mode); | |
2177bab5 JH |
553 | } else { |
554 | struct hci_cp_write_eir cp; | |
555 | ||
556 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
557 | memset(&cp, 0, sizeof(cp)); | |
558 | ||
42c6b129 | 559 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
560 | } |
561 | } | |
562 | ||
563 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 564 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
565 | |
566 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 567 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
568 | |
569 | if (lmp_ext_feat_capable(hdev)) { | |
570 | struct hci_cp_read_local_ext_features cp; | |
571 | ||
572 | cp.page = 0x01; | |
42c6b129 JH |
573 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
574 | sizeof(cp), &cp); | |
2177bab5 JH |
575 | } |
576 | ||
577 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
578 | u8 enable = 1; | |
42c6b129 JH |
579 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
580 | &enable); | |
2177bab5 JH |
581 | } |
582 | } | |
583 | ||
42c6b129 | 584 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 585 | { |
42c6b129 | 586 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
587 | struct hci_cp_write_def_link_policy cp; |
588 | u16 link_policy = 0; | |
589 | ||
590 | if (lmp_rswitch_capable(hdev)) | |
591 | link_policy |= HCI_LP_RSWITCH; | |
592 | if (lmp_hold_capable(hdev)) | |
593 | link_policy |= HCI_LP_HOLD; | |
594 | if (lmp_sniff_capable(hdev)) | |
595 | link_policy |= HCI_LP_SNIFF; | |
596 | if (lmp_park_capable(hdev)) | |
597 | link_policy |= HCI_LP_PARK; | |
598 | ||
599 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 600 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
601 | } |
602 | ||
42c6b129 | 603 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 604 | { |
42c6b129 | 605 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
606 | struct hci_cp_write_le_host_supported cp; |
607 | ||
c73eee91 JH |
608 | /* LE-only devices do not support explicit enablement */ |
609 | if (!lmp_bredr_capable(hdev)) | |
610 | return; | |
611 | ||
2177bab5 JH |
612 | memset(&cp, 0, sizeof(cp)); |
613 | ||
614 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
615 | cp.le = 0x01; | |
616 | cp.simul = lmp_le_br_capable(hdev); | |
617 | } | |
618 | ||
619 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
620 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
621 | &cp); | |
2177bab5 JH |
622 | } |
623 | ||
d62e6d67 JH |
624 | static void hci_set_event_mask_page_2(struct hci_request *req) |
625 | { | |
626 | struct hci_dev *hdev = req->hdev; | |
627 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
628 | ||
629 | /* If Connectionless Slave Broadcast master role is supported | |
630 | * enable all necessary events for it. | |
631 | */ | |
632 | if (hdev->features[2][0] & 0x01) { | |
633 | events[1] |= 0x40; /* Triggered Clock Capture */ | |
634 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
635 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
636 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
637 | } | |
638 | ||
639 | /* If Connectionless Slave Broadcast slave role is supported | |
640 | * enable all necessary events for it. | |
641 | */ | |
642 | if (hdev->features[2][0] & 0x02) { | |
643 | events[2] |= 0x01; /* Synchronization Train Received */ | |
644 | events[2] |= 0x02; /* CSB Receive */ | |
645 | events[2] |= 0x04; /* CSB Timeout */ | |
646 | events[2] |= 0x08; /* Truncated Page Complete */ | |
647 | } | |
648 | ||
649 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); | |
650 | } | |
651 | ||
42c6b129 | 652 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 653 | { |
42c6b129 | 654 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 655 | u8 p; |
42c6b129 | 656 | |
b8f4e068 GP |
657 | /* Some Broadcom based Bluetooth controllers do not support the |
658 | * Delete Stored Link Key command. They are clearly indicating its | |
659 | * absence in the bit mask of supported commands. | |
660 | * | |
661 | * Check the supported commands and only if the the command is marked | |
662 | * as supported send it. If not supported assume that the controller | |
663 | * does not have actual support for stored link keys which makes this | |
664 | * command redundant anyway. | |
637b4cae | 665 | */ |
59f45d57 JH |
666 | if (hdev->commands[6] & 0x80) { |
667 | struct hci_cp_delete_stored_link_key cp; | |
668 | ||
669 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
670 | cp.delete_all = 0x01; | |
671 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
672 | sizeof(cp), &cp); | |
673 | } | |
674 | ||
2177bab5 | 675 | if (hdev->commands[5] & 0x10) |
42c6b129 | 676 | hci_setup_link_policy(req); |
2177bab5 | 677 | |
04b4edcb | 678 | if (lmp_le_capable(hdev)) { |
42c6b129 | 679 | hci_set_le_support(req); |
04b4edcb JH |
680 | hci_update_ad(req); |
681 | } | |
d2c5d77f JH |
682 | |
683 | /* Read features beyond page 1 if available */ | |
684 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
685 | struct hci_cp_read_local_ext_features cp; | |
686 | ||
687 | cp.page = p; | |
688 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
689 | sizeof(cp), &cp); | |
690 | } | |
2177bab5 JH |
691 | } |
692 | ||
5d4e7e8d JH |
693 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
694 | { | |
695 | struct hci_dev *hdev = req->hdev; | |
696 | ||
d62e6d67 JH |
697 | /* Set event mask page 2 if the HCI command for it is supported */ |
698 | if (hdev->commands[22] & 0x04) | |
699 | hci_set_event_mask_page_2(req); | |
700 | ||
5d4e7e8d JH |
701 | /* Check for Synchronization Train support */ |
702 | if (hdev->features[2][0] & 0x04) | |
703 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); | |
704 | } | |
705 | ||
2177bab5 JH |
706 | static int __hci_init(struct hci_dev *hdev) |
707 | { | |
708 | int err; | |
709 | ||
710 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
711 | if (err < 0) | |
712 | return err; | |
713 | ||
714 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
715 | * BR/EDR/LE type controllers. AMP controllers only need the | |
716 | * first stage init. | |
717 | */ | |
718 | if (hdev->dev_type != HCI_BREDR) | |
719 | return 0; | |
720 | ||
721 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
722 | if (err < 0) | |
723 | return err; | |
724 | ||
5d4e7e8d JH |
725 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
726 | if (err < 0) | |
727 | return err; | |
728 | ||
729 | return __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); | |
2177bab5 JH |
730 | } |
731 | ||
42c6b129 | 732 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
733 | { |
734 | __u8 scan = opt; | |
735 | ||
42c6b129 | 736 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
737 | |
738 | /* Inquiry and Page scans */ | |
42c6b129 | 739 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
740 | } |
741 | ||
42c6b129 | 742 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
743 | { |
744 | __u8 auth = opt; | |
745 | ||
42c6b129 | 746 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
747 | |
748 | /* Authentication */ | |
42c6b129 | 749 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
750 | } |
751 | ||
42c6b129 | 752 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
753 | { |
754 | __u8 encrypt = opt; | |
755 | ||
42c6b129 | 756 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 757 | |
e4e8e37c | 758 | /* Encryption */ |
42c6b129 | 759 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
760 | } |
761 | ||
42c6b129 | 762 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
763 | { |
764 | __le16 policy = cpu_to_le16(opt); | |
765 | ||
42c6b129 | 766 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
767 | |
768 | /* Default link policy */ | |
42c6b129 | 769 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
770 | } |
771 | ||
8e87d142 | 772 | /* Get HCI device by index. |
1da177e4 LT |
773 | * Device is held on return. */ |
774 | struct hci_dev *hci_dev_get(int index) | |
775 | { | |
8035ded4 | 776 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
777 | |
778 | BT_DBG("%d", index); | |
779 | ||
780 | if (index < 0) | |
781 | return NULL; | |
782 | ||
783 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 784 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
785 | if (d->id == index) { |
786 | hdev = hci_dev_hold(d); | |
787 | break; | |
788 | } | |
789 | } | |
790 | read_unlock(&hci_dev_list_lock); | |
791 | return hdev; | |
792 | } | |
1da177e4 LT |
793 | |
794 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 795 | |
30dc78e1 JH |
796 | bool hci_discovery_active(struct hci_dev *hdev) |
797 | { | |
798 | struct discovery_state *discov = &hdev->discovery; | |
799 | ||
6fbe195d | 800 | switch (discov->state) { |
343f935b | 801 | case DISCOVERY_FINDING: |
6fbe195d | 802 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
803 | return true; |
804 | ||
6fbe195d AG |
805 | default: |
806 | return false; | |
807 | } | |
30dc78e1 JH |
808 | } |
809 | ||
ff9ef578 JH |
810 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
811 | { | |
812 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
813 | ||
814 | if (hdev->discovery.state == state) | |
815 | return; | |
816 | ||
817 | switch (state) { | |
818 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
819 | if (hdev->discovery.state != DISCOVERY_STARTING) |
820 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
821 | break; |
822 | case DISCOVERY_STARTING: | |
823 | break; | |
343f935b | 824 | case DISCOVERY_FINDING: |
ff9ef578 JH |
825 | mgmt_discovering(hdev, 1); |
826 | break; | |
30dc78e1 JH |
827 | case DISCOVERY_RESOLVING: |
828 | break; | |
ff9ef578 JH |
829 | case DISCOVERY_STOPPING: |
830 | break; | |
831 | } | |
832 | ||
833 | hdev->discovery.state = state; | |
834 | } | |
835 | ||
1f9b9a5d | 836 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 837 | { |
30883512 | 838 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 839 | struct inquiry_entry *p, *n; |
1da177e4 | 840 | |
561aafbc JH |
841 | list_for_each_entry_safe(p, n, &cache->all, all) { |
842 | list_del(&p->all); | |
b57c1a56 | 843 | kfree(p); |
1da177e4 | 844 | } |
561aafbc JH |
845 | |
846 | INIT_LIST_HEAD(&cache->unknown); | |
847 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
848 | } |
849 | ||
a8c5fb1a GP |
850 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
851 | bdaddr_t *bdaddr) | |
1da177e4 | 852 | { |
30883512 | 853 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
854 | struct inquiry_entry *e; |
855 | ||
6ed93dc6 | 856 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 857 | |
561aafbc JH |
858 | list_for_each_entry(e, &cache->all, all) { |
859 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
860 | return e; | |
861 | } | |
862 | ||
863 | return NULL; | |
864 | } | |
865 | ||
866 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 867 | bdaddr_t *bdaddr) |
561aafbc | 868 | { |
30883512 | 869 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
870 | struct inquiry_entry *e; |
871 | ||
6ed93dc6 | 872 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
873 | |
874 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 875 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
876 | return e; |
877 | } | |
878 | ||
879 | return NULL; | |
1da177e4 LT |
880 | } |
881 | ||
30dc78e1 | 882 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
883 | bdaddr_t *bdaddr, |
884 | int state) | |
30dc78e1 JH |
885 | { |
886 | struct discovery_state *cache = &hdev->discovery; | |
887 | struct inquiry_entry *e; | |
888 | ||
6ed93dc6 | 889 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
890 | |
891 | list_for_each_entry(e, &cache->resolve, list) { | |
892 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
893 | return e; | |
894 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
895 | return e; | |
896 | } | |
897 | ||
898 | return NULL; | |
899 | } | |
900 | ||
a3d4e20a | 901 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 902 | struct inquiry_entry *ie) |
a3d4e20a JH |
903 | { |
904 | struct discovery_state *cache = &hdev->discovery; | |
905 | struct list_head *pos = &cache->resolve; | |
906 | struct inquiry_entry *p; | |
907 | ||
908 | list_del(&ie->list); | |
909 | ||
910 | list_for_each_entry(p, &cache->resolve, list) { | |
911 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 912 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
913 | break; |
914 | pos = &p->list; | |
915 | } | |
916 | ||
917 | list_add(&ie->list, pos); | |
918 | } | |
919 | ||
3175405b | 920 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 921 | bool name_known, bool *ssp) |
1da177e4 | 922 | { |
30883512 | 923 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 924 | struct inquiry_entry *ie; |
1da177e4 | 925 | |
6ed93dc6 | 926 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 927 | |
2b2fec4d SJ |
928 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
929 | ||
388fc8fa JH |
930 | if (ssp) |
931 | *ssp = data->ssp_mode; | |
932 | ||
70f23020 | 933 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 934 | if (ie) { |
388fc8fa JH |
935 | if (ie->data.ssp_mode && ssp) |
936 | *ssp = true; | |
937 | ||
a3d4e20a | 938 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 939 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
940 | ie->data.rssi = data->rssi; |
941 | hci_inquiry_cache_update_resolve(hdev, ie); | |
942 | } | |
943 | ||
561aafbc | 944 | goto update; |
a3d4e20a | 945 | } |
561aafbc JH |
946 | |
947 | /* Entry not in the cache. Add new one. */ | |
948 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
949 | if (!ie) | |
3175405b | 950 | return false; |
561aafbc JH |
951 | |
952 | list_add(&ie->all, &cache->all); | |
953 | ||
954 | if (name_known) { | |
955 | ie->name_state = NAME_KNOWN; | |
956 | } else { | |
957 | ie->name_state = NAME_NOT_KNOWN; | |
958 | list_add(&ie->list, &cache->unknown); | |
959 | } | |
70f23020 | 960 | |
561aafbc JH |
961 | update: |
962 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 963 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
964 | ie->name_state = NAME_KNOWN; |
965 | list_del(&ie->list); | |
1da177e4 LT |
966 | } |
967 | ||
70f23020 AE |
968 | memcpy(&ie->data, data, sizeof(*data)); |
969 | ie->timestamp = jiffies; | |
1da177e4 | 970 | cache->timestamp = jiffies; |
3175405b JH |
971 | |
972 | if (ie->name_state == NAME_NOT_KNOWN) | |
973 | return false; | |
974 | ||
975 | return true; | |
1da177e4 LT |
976 | } |
977 | ||
978 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
979 | { | |
30883512 | 980 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
981 | struct inquiry_info *info = (struct inquiry_info *) buf; |
982 | struct inquiry_entry *e; | |
983 | int copied = 0; | |
984 | ||
561aafbc | 985 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 986 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
987 | |
988 | if (copied >= num) | |
989 | break; | |
990 | ||
1da177e4 LT |
991 | bacpy(&info->bdaddr, &data->bdaddr); |
992 | info->pscan_rep_mode = data->pscan_rep_mode; | |
993 | info->pscan_period_mode = data->pscan_period_mode; | |
994 | info->pscan_mode = data->pscan_mode; | |
995 | memcpy(info->dev_class, data->dev_class, 3); | |
996 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 997 | |
1da177e4 | 998 | info++; |
b57c1a56 | 999 | copied++; |
1da177e4 LT |
1000 | } |
1001 | ||
1002 | BT_DBG("cache %p, copied %d", cache, copied); | |
1003 | return copied; | |
1004 | } | |
1005 | ||
42c6b129 | 1006 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1007 | { |
1008 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1009 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1010 | struct hci_cp_inquiry cp; |
1011 | ||
1012 | BT_DBG("%s", hdev->name); | |
1013 | ||
1014 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1015 | return; | |
1016 | ||
1017 | /* Start Inquiry */ | |
1018 | memcpy(&cp.lap, &ir->lap, 3); | |
1019 | cp.length = ir->length; | |
1020 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1021 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1022 | } |
1023 | ||
3e13fa1e AG |
1024 | static int wait_inquiry(void *word) |
1025 | { | |
1026 | schedule(); | |
1027 | return signal_pending(current); | |
1028 | } | |
1029 | ||
1da177e4 LT |
1030 | int hci_inquiry(void __user *arg) |
1031 | { | |
1032 | __u8 __user *ptr = arg; | |
1033 | struct hci_inquiry_req ir; | |
1034 | struct hci_dev *hdev; | |
1035 | int err = 0, do_inquiry = 0, max_rsp; | |
1036 | long timeo; | |
1037 | __u8 *buf; | |
1038 | ||
1039 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1040 | return -EFAULT; | |
1041 | ||
5a08ecce AE |
1042 | hdev = hci_dev_get(ir.dev_id); |
1043 | if (!hdev) | |
1da177e4 LT |
1044 | return -ENODEV; |
1045 | ||
0736cfa8 MH |
1046 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1047 | err = -EBUSY; | |
1048 | goto done; | |
1049 | } | |
1050 | ||
5b69bef5 MH |
1051 | if (hdev->dev_type != HCI_BREDR) { |
1052 | err = -EOPNOTSUPP; | |
1053 | goto done; | |
1054 | } | |
1055 | ||
56f87901 JH |
1056 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1057 | err = -EOPNOTSUPP; | |
1058 | goto done; | |
1059 | } | |
1060 | ||
09fd0de5 | 1061 | hci_dev_lock(hdev); |
8e87d142 | 1062 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1063 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1064 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1065 | do_inquiry = 1; |
1066 | } | |
09fd0de5 | 1067 | hci_dev_unlock(hdev); |
1da177e4 | 1068 | |
04837f64 | 1069 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1070 | |
1071 | if (do_inquiry) { | |
01178cd4 JH |
1072 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1073 | timeo); | |
70f23020 AE |
1074 | if (err < 0) |
1075 | goto done; | |
3e13fa1e AG |
1076 | |
1077 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1078 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1079 | */ | |
1080 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
1081 | TASK_INTERRUPTIBLE)) | |
1082 | return -EINTR; | |
70f23020 | 1083 | } |
1da177e4 | 1084 | |
8fc9ced3 GP |
1085 | /* for unlimited number of responses we will use buffer with |
1086 | * 255 entries | |
1087 | */ | |
1da177e4 LT |
1088 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1089 | ||
1090 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1091 | * copy it to the user space. | |
1092 | */ | |
01df8c31 | 1093 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1094 | if (!buf) { |
1da177e4 LT |
1095 | err = -ENOMEM; |
1096 | goto done; | |
1097 | } | |
1098 | ||
09fd0de5 | 1099 | hci_dev_lock(hdev); |
1da177e4 | 1100 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1101 | hci_dev_unlock(hdev); |
1da177e4 LT |
1102 | |
1103 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1104 | ||
1105 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1106 | ptr += sizeof(ir); | |
1107 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1108 | ir.num_rsp)) |
1da177e4 | 1109 | err = -EFAULT; |
8e87d142 | 1110 | } else |
1da177e4 LT |
1111 | err = -EFAULT; |
1112 | ||
1113 | kfree(buf); | |
1114 | ||
1115 | done: | |
1116 | hci_dev_put(hdev); | |
1117 | return err; | |
1118 | } | |
1119 | ||
3f0f524b JH |
1120 | static u8 create_ad(struct hci_dev *hdev, u8 *ptr) |
1121 | { | |
1122 | u8 ad_len = 0, flags = 0; | |
1123 | size_t name_len; | |
1124 | ||
f3d3444a | 1125 | if (test_bit(HCI_ADVERTISING, &hdev->dev_flags)) |
3f0f524b JH |
1126 | flags |= LE_AD_GENERAL; |
1127 | ||
11802b29 JH |
1128 | if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1129 | if (lmp_le_br_capable(hdev)) | |
1130 | flags |= LE_AD_SIM_LE_BREDR_CTRL; | |
1131 | if (lmp_host_le_br_capable(hdev)) | |
1132 | flags |= LE_AD_SIM_LE_BREDR_HOST; | |
1133 | } else { | |
3f0f524b | 1134 | flags |= LE_AD_NO_BREDR; |
11802b29 | 1135 | } |
3f0f524b JH |
1136 | |
1137 | if (flags) { | |
1138 | BT_DBG("adv flags 0x%02x", flags); | |
1139 | ||
1140 | ptr[0] = 2; | |
1141 | ptr[1] = EIR_FLAGS; | |
1142 | ptr[2] = flags; | |
1143 | ||
1144 | ad_len += 3; | |
1145 | ptr += 3; | |
1146 | } | |
1147 | ||
1148 | if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) { | |
1149 | ptr[0] = 2; | |
1150 | ptr[1] = EIR_TX_POWER; | |
1151 | ptr[2] = (u8) hdev->adv_tx_power; | |
1152 | ||
1153 | ad_len += 3; | |
1154 | ptr += 3; | |
1155 | } | |
1156 | ||
1157 | name_len = strlen(hdev->dev_name); | |
1158 | if (name_len > 0) { | |
1159 | size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; | |
1160 | ||
1161 | if (name_len > max_len) { | |
1162 | name_len = max_len; | |
1163 | ptr[1] = EIR_NAME_SHORT; | |
1164 | } else | |
1165 | ptr[1] = EIR_NAME_COMPLETE; | |
1166 | ||
1167 | ptr[0] = name_len + 1; | |
1168 | ||
1169 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
1170 | ||
1171 | ad_len += (name_len + 2); | |
1172 | ptr += (name_len + 2); | |
1173 | } | |
1174 | ||
1175 | return ad_len; | |
1176 | } | |
1177 | ||
04b4edcb | 1178 | void hci_update_ad(struct hci_request *req) |
3f0f524b | 1179 | { |
04b4edcb | 1180 | struct hci_dev *hdev = req->hdev; |
3f0f524b JH |
1181 | struct hci_cp_le_set_adv_data cp; |
1182 | u8 len; | |
3f0f524b | 1183 | |
04b4edcb JH |
1184 | if (!lmp_le_capable(hdev)) |
1185 | return; | |
3f0f524b JH |
1186 | |
1187 | memset(&cp, 0, sizeof(cp)); | |
1188 | ||
1189 | len = create_ad(hdev, cp.data); | |
1190 | ||
1191 | if (hdev->adv_data_len == len && | |
04b4edcb JH |
1192 | memcmp(cp.data, hdev->adv_data, len) == 0) |
1193 | return; | |
3f0f524b JH |
1194 | |
1195 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1196 | hdev->adv_data_len = len; | |
1197 | ||
1198 | cp.length = len; | |
3f0f524b | 1199 | |
04b4edcb | 1200 | hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); |
3f0f524b JH |
1201 | } |
1202 | ||
cbed0ca1 | 1203 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1204 | { |
1da177e4 LT |
1205 | int ret = 0; |
1206 | ||
1da177e4 LT |
1207 | BT_DBG("%s %p", hdev->name, hdev); |
1208 | ||
1209 | hci_req_lock(hdev); | |
1210 | ||
94324962 JH |
1211 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1212 | ret = -ENODEV; | |
1213 | goto done; | |
1214 | } | |
1215 | ||
a5c8f270 MH |
1216 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1217 | /* Check for rfkill but allow the HCI setup stage to | |
1218 | * proceed (which in itself doesn't cause any RF activity). | |
1219 | */ | |
1220 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
1221 | ret = -ERFKILL; | |
1222 | goto done; | |
1223 | } | |
1224 | ||
1225 | /* Check for valid public address or a configured static | |
1226 | * random adddress, but let the HCI setup proceed to | |
1227 | * be able to determine if there is a public address | |
1228 | * or not. | |
1229 | * | |
1230 | * This check is only valid for BR/EDR controllers | |
1231 | * since AMP controllers do not have an address. | |
1232 | */ | |
1233 | if (hdev->dev_type == HCI_BREDR && | |
1234 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1235 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1236 | ret = -EADDRNOTAVAIL; | |
1237 | goto done; | |
1238 | } | |
611b30f7 MH |
1239 | } |
1240 | ||
1da177e4 LT |
1241 | if (test_bit(HCI_UP, &hdev->flags)) { |
1242 | ret = -EALREADY; | |
1243 | goto done; | |
1244 | } | |
1245 | ||
1da177e4 LT |
1246 | if (hdev->open(hdev)) { |
1247 | ret = -EIO; | |
1248 | goto done; | |
1249 | } | |
1250 | ||
f41c70c4 MH |
1251 | atomic_set(&hdev->cmd_cnt, 1); |
1252 | set_bit(HCI_INIT, &hdev->flags); | |
1253 | ||
1254 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1255 | ret = hdev->setup(hdev); | |
1256 | ||
1257 | if (!ret) { | |
f41c70c4 MH |
1258 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1259 | set_bit(HCI_RAW, &hdev->flags); | |
1260 | ||
0736cfa8 MH |
1261 | if (!test_bit(HCI_RAW, &hdev->flags) && |
1262 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 1263 | ret = __hci_init(hdev); |
1da177e4 LT |
1264 | } |
1265 | ||
f41c70c4 MH |
1266 | clear_bit(HCI_INIT, &hdev->flags); |
1267 | ||
1da177e4 LT |
1268 | if (!ret) { |
1269 | hci_dev_hold(hdev); | |
1270 | set_bit(HCI_UP, &hdev->flags); | |
1271 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 1272 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 1273 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 1274 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1275 | hci_dev_lock(hdev); |
744cf19e | 1276 | mgmt_powered(hdev, 1); |
09fd0de5 | 1277 | hci_dev_unlock(hdev); |
56e5cb86 | 1278 | } |
8e87d142 | 1279 | } else { |
1da177e4 | 1280 | /* Init failed, cleanup */ |
3eff45ea | 1281 | flush_work(&hdev->tx_work); |
c347b765 | 1282 | flush_work(&hdev->cmd_work); |
b78752cc | 1283 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1284 | |
1285 | skb_queue_purge(&hdev->cmd_q); | |
1286 | skb_queue_purge(&hdev->rx_q); | |
1287 | ||
1288 | if (hdev->flush) | |
1289 | hdev->flush(hdev); | |
1290 | ||
1291 | if (hdev->sent_cmd) { | |
1292 | kfree_skb(hdev->sent_cmd); | |
1293 | hdev->sent_cmd = NULL; | |
1294 | } | |
1295 | ||
1296 | hdev->close(hdev); | |
1297 | hdev->flags = 0; | |
1298 | } | |
1299 | ||
1300 | done: | |
1301 | hci_req_unlock(hdev); | |
1da177e4 LT |
1302 | return ret; |
1303 | } | |
1304 | ||
cbed0ca1 JH |
1305 | /* ---- HCI ioctl helpers ---- */ |
1306 | ||
1307 | int hci_dev_open(__u16 dev) | |
1308 | { | |
1309 | struct hci_dev *hdev; | |
1310 | int err; | |
1311 | ||
1312 | hdev = hci_dev_get(dev); | |
1313 | if (!hdev) | |
1314 | return -ENODEV; | |
1315 | ||
e1d08f40 JH |
1316 | /* We need to ensure that no other power on/off work is pending |
1317 | * before proceeding to call hci_dev_do_open. This is | |
1318 | * particularly important if the setup procedure has not yet | |
1319 | * completed. | |
1320 | */ | |
1321 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1322 | cancel_delayed_work(&hdev->power_off); | |
1323 | ||
a5c8f270 MH |
1324 | /* After this call it is guaranteed that the setup procedure |
1325 | * has finished. This means that error conditions like RFKILL | |
1326 | * or no valid public or static random address apply. | |
1327 | */ | |
e1d08f40 JH |
1328 | flush_workqueue(hdev->req_workqueue); |
1329 | ||
cbed0ca1 JH |
1330 | err = hci_dev_do_open(hdev); |
1331 | ||
1332 | hci_dev_put(hdev); | |
1333 | ||
1334 | return err; | |
1335 | } | |
1336 | ||
1da177e4 LT |
1337 | static int hci_dev_do_close(struct hci_dev *hdev) |
1338 | { | |
1339 | BT_DBG("%s %p", hdev->name, hdev); | |
1340 | ||
78c04c0b VCG |
1341 | cancel_delayed_work(&hdev->power_off); |
1342 | ||
1da177e4 LT |
1343 | hci_req_cancel(hdev, ENODEV); |
1344 | hci_req_lock(hdev); | |
1345 | ||
1346 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1347 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1348 | hci_req_unlock(hdev); |
1349 | return 0; | |
1350 | } | |
1351 | ||
3eff45ea GP |
1352 | /* Flush RX and TX works */ |
1353 | flush_work(&hdev->tx_work); | |
b78752cc | 1354 | flush_work(&hdev->rx_work); |
1da177e4 | 1355 | |
16ab91ab | 1356 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1357 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1358 | hdev->discov_timeout = 0; |
5e5282bb | 1359 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1360 | } |
1361 | ||
a8b2d5c2 | 1362 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1363 | cancel_delayed_work(&hdev->service_cache); |
1364 | ||
7ba8b4be AG |
1365 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1366 | ||
09fd0de5 | 1367 | hci_dev_lock(hdev); |
1f9b9a5d | 1368 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1369 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1370 | hci_dev_unlock(hdev); |
1da177e4 LT |
1371 | |
1372 | hci_notify(hdev, HCI_DEV_DOWN); | |
1373 | ||
1374 | if (hdev->flush) | |
1375 | hdev->flush(hdev); | |
1376 | ||
1377 | /* Reset device */ | |
1378 | skb_queue_purge(&hdev->cmd_q); | |
1379 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1380 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 1381 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1382 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1383 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1384 | clear_bit(HCI_INIT, &hdev->flags); |
1385 | } | |
1386 | ||
c347b765 GP |
1387 | /* flush cmd work */ |
1388 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1389 | |
1390 | /* Drop queues */ | |
1391 | skb_queue_purge(&hdev->rx_q); | |
1392 | skb_queue_purge(&hdev->cmd_q); | |
1393 | skb_queue_purge(&hdev->raw_q); | |
1394 | ||
1395 | /* Drop last sent command */ | |
1396 | if (hdev->sent_cmd) { | |
b79f44c1 | 1397 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1398 | kfree_skb(hdev->sent_cmd); |
1399 | hdev->sent_cmd = NULL; | |
1400 | } | |
1401 | ||
b6ddb638 JH |
1402 | kfree_skb(hdev->recv_evt); |
1403 | hdev->recv_evt = NULL; | |
1404 | ||
1da177e4 LT |
1405 | /* After this point our queues are empty |
1406 | * and no tasks are scheduled. */ | |
1407 | hdev->close(hdev); | |
1408 | ||
35b973c9 JH |
1409 | /* Clear flags */ |
1410 | hdev->flags = 0; | |
1411 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1412 | ||
93c311a0 MH |
1413 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
1414 | if (hdev->dev_type == HCI_BREDR) { | |
1415 | hci_dev_lock(hdev); | |
1416 | mgmt_powered(hdev, 0); | |
1417 | hci_dev_unlock(hdev); | |
1418 | } | |
8ee56540 | 1419 | } |
5add6af8 | 1420 | |
ced5c338 | 1421 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1422 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1423 | |
e59fda8d | 1424 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1425 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1426 | |
1da177e4 LT |
1427 | hci_req_unlock(hdev); |
1428 | ||
1429 | hci_dev_put(hdev); | |
1430 | return 0; | |
1431 | } | |
1432 | ||
1433 | int hci_dev_close(__u16 dev) | |
1434 | { | |
1435 | struct hci_dev *hdev; | |
1436 | int err; | |
1437 | ||
70f23020 AE |
1438 | hdev = hci_dev_get(dev); |
1439 | if (!hdev) | |
1da177e4 | 1440 | return -ENODEV; |
8ee56540 | 1441 | |
0736cfa8 MH |
1442 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1443 | err = -EBUSY; | |
1444 | goto done; | |
1445 | } | |
1446 | ||
8ee56540 MH |
1447 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
1448 | cancel_delayed_work(&hdev->power_off); | |
1449 | ||
1da177e4 | 1450 | err = hci_dev_do_close(hdev); |
8ee56540 | 1451 | |
0736cfa8 | 1452 | done: |
1da177e4 LT |
1453 | hci_dev_put(hdev); |
1454 | return err; | |
1455 | } | |
1456 | ||
1457 | int hci_dev_reset(__u16 dev) | |
1458 | { | |
1459 | struct hci_dev *hdev; | |
1460 | int ret = 0; | |
1461 | ||
70f23020 AE |
1462 | hdev = hci_dev_get(dev); |
1463 | if (!hdev) | |
1da177e4 LT |
1464 | return -ENODEV; |
1465 | ||
1466 | hci_req_lock(hdev); | |
1da177e4 | 1467 | |
808a049e MH |
1468 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1469 | ret = -ENETDOWN; | |
1da177e4 | 1470 | goto done; |
808a049e | 1471 | } |
1da177e4 | 1472 | |
0736cfa8 MH |
1473 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1474 | ret = -EBUSY; | |
1475 | goto done; | |
1476 | } | |
1477 | ||
1da177e4 LT |
1478 | /* Drop queues */ |
1479 | skb_queue_purge(&hdev->rx_q); | |
1480 | skb_queue_purge(&hdev->cmd_q); | |
1481 | ||
09fd0de5 | 1482 | hci_dev_lock(hdev); |
1f9b9a5d | 1483 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1484 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1485 | hci_dev_unlock(hdev); |
1da177e4 LT |
1486 | |
1487 | if (hdev->flush) | |
1488 | hdev->flush(hdev); | |
1489 | ||
8e87d142 | 1490 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1491 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1492 | |
1493 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1494 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1495 | |
1496 | done: | |
1da177e4 LT |
1497 | hci_req_unlock(hdev); |
1498 | hci_dev_put(hdev); | |
1499 | return ret; | |
1500 | } | |
1501 | ||
1502 | int hci_dev_reset_stat(__u16 dev) | |
1503 | { | |
1504 | struct hci_dev *hdev; | |
1505 | int ret = 0; | |
1506 | ||
70f23020 AE |
1507 | hdev = hci_dev_get(dev); |
1508 | if (!hdev) | |
1da177e4 LT |
1509 | return -ENODEV; |
1510 | ||
0736cfa8 MH |
1511 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1512 | ret = -EBUSY; | |
1513 | goto done; | |
1514 | } | |
1515 | ||
1da177e4 LT |
1516 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1517 | ||
0736cfa8 | 1518 | done: |
1da177e4 | 1519 | hci_dev_put(hdev); |
1da177e4 LT |
1520 | return ret; |
1521 | } | |
1522 | ||
1523 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1524 | { | |
1525 | struct hci_dev *hdev; | |
1526 | struct hci_dev_req dr; | |
1527 | int err = 0; | |
1528 | ||
1529 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1530 | return -EFAULT; | |
1531 | ||
70f23020 AE |
1532 | hdev = hci_dev_get(dr.dev_id); |
1533 | if (!hdev) | |
1da177e4 LT |
1534 | return -ENODEV; |
1535 | ||
0736cfa8 MH |
1536 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1537 | err = -EBUSY; | |
1538 | goto done; | |
1539 | } | |
1540 | ||
5b69bef5 MH |
1541 | if (hdev->dev_type != HCI_BREDR) { |
1542 | err = -EOPNOTSUPP; | |
1543 | goto done; | |
1544 | } | |
1545 | ||
56f87901 JH |
1546 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1547 | err = -EOPNOTSUPP; | |
1548 | goto done; | |
1549 | } | |
1550 | ||
1da177e4 LT |
1551 | switch (cmd) { |
1552 | case HCISETAUTH: | |
01178cd4 JH |
1553 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1554 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1555 | break; |
1556 | ||
1557 | case HCISETENCRYPT: | |
1558 | if (!lmp_encrypt_capable(hdev)) { | |
1559 | err = -EOPNOTSUPP; | |
1560 | break; | |
1561 | } | |
1562 | ||
1563 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1564 | /* Auth must be enabled first */ | |
01178cd4 JH |
1565 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1566 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1567 | if (err) |
1568 | break; | |
1569 | } | |
1570 | ||
01178cd4 JH |
1571 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1572 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1573 | break; |
1574 | ||
1575 | case HCISETSCAN: | |
01178cd4 JH |
1576 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1577 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1578 | break; |
1579 | ||
1da177e4 | 1580 | case HCISETLINKPOL: |
01178cd4 JH |
1581 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1582 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1583 | break; |
1584 | ||
1585 | case HCISETLINKMODE: | |
e4e8e37c MH |
1586 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1587 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1588 | break; | |
1589 | ||
1590 | case HCISETPTYPE: | |
1591 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1592 | break; |
1593 | ||
1594 | case HCISETACLMTU: | |
e4e8e37c MH |
1595 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1596 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1597 | break; |
1598 | ||
1599 | case HCISETSCOMTU: | |
e4e8e37c MH |
1600 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1601 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1602 | break; |
1603 | ||
1604 | default: | |
1605 | err = -EINVAL; | |
1606 | break; | |
1607 | } | |
e4e8e37c | 1608 | |
0736cfa8 | 1609 | done: |
1da177e4 LT |
1610 | hci_dev_put(hdev); |
1611 | return err; | |
1612 | } | |
1613 | ||
1614 | int hci_get_dev_list(void __user *arg) | |
1615 | { | |
8035ded4 | 1616 | struct hci_dev *hdev; |
1da177e4 LT |
1617 | struct hci_dev_list_req *dl; |
1618 | struct hci_dev_req *dr; | |
1da177e4 LT |
1619 | int n = 0, size, err; |
1620 | __u16 dev_num; | |
1621 | ||
1622 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1623 | return -EFAULT; | |
1624 | ||
1625 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1626 | return -EINVAL; | |
1627 | ||
1628 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1629 | ||
70f23020 AE |
1630 | dl = kzalloc(size, GFP_KERNEL); |
1631 | if (!dl) | |
1da177e4 LT |
1632 | return -ENOMEM; |
1633 | ||
1634 | dr = dl->dev_req; | |
1635 | ||
f20d09d5 | 1636 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1637 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1638 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1639 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1640 | |
a8b2d5c2 JH |
1641 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1642 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1643 | |
1da177e4 LT |
1644 | (dr + n)->dev_id = hdev->id; |
1645 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1646 | |
1da177e4 LT |
1647 | if (++n >= dev_num) |
1648 | break; | |
1649 | } | |
f20d09d5 | 1650 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1651 | |
1652 | dl->dev_num = n; | |
1653 | size = sizeof(*dl) + n * sizeof(*dr); | |
1654 | ||
1655 | err = copy_to_user(arg, dl, size); | |
1656 | kfree(dl); | |
1657 | ||
1658 | return err ? -EFAULT : 0; | |
1659 | } | |
1660 | ||
1661 | int hci_get_dev_info(void __user *arg) | |
1662 | { | |
1663 | struct hci_dev *hdev; | |
1664 | struct hci_dev_info di; | |
1665 | int err = 0; | |
1666 | ||
1667 | if (copy_from_user(&di, arg, sizeof(di))) | |
1668 | return -EFAULT; | |
1669 | ||
70f23020 AE |
1670 | hdev = hci_dev_get(di.dev_id); |
1671 | if (!hdev) | |
1da177e4 LT |
1672 | return -ENODEV; |
1673 | ||
a8b2d5c2 | 1674 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1675 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1676 | |
a8b2d5c2 JH |
1677 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1678 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1679 | |
1da177e4 LT |
1680 | strcpy(di.name, hdev->name); |
1681 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1682 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
1683 | di.flags = hdev->flags; |
1684 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1685 | if (lmp_bredr_capable(hdev)) { |
1686 | di.acl_mtu = hdev->acl_mtu; | |
1687 | di.acl_pkts = hdev->acl_pkts; | |
1688 | di.sco_mtu = hdev->sco_mtu; | |
1689 | di.sco_pkts = hdev->sco_pkts; | |
1690 | } else { | |
1691 | di.acl_mtu = hdev->le_mtu; | |
1692 | di.acl_pkts = hdev->le_pkts; | |
1693 | di.sco_mtu = 0; | |
1694 | di.sco_pkts = 0; | |
1695 | } | |
1da177e4 LT |
1696 | di.link_policy = hdev->link_policy; |
1697 | di.link_mode = hdev->link_mode; | |
1698 | ||
1699 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1700 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1701 | ||
1702 | if (copy_to_user(arg, &di, sizeof(di))) | |
1703 | err = -EFAULT; | |
1704 | ||
1705 | hci_dev_put(hdev); | |
1706 | ||
1707 | return err; | |
1708 | } | |
1709 | ||
1710 | /* ---- Interface to HCI drivers ---- */ | |
1711 | ||
611b30f7 MH |
1712 | static int hci_rfkill_set_block(void *data, bool blocked) |
1713 | { | |
1714 | struct hci_dev *hdev = data; | |
1715 | ||
1716 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1717 | ||
0736cfa8 MH |
1718 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
1719 | return -EBUSY; | |
1720 | ||
5e130367 JH |
1721 | if (blocked) { |
1722 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
1723 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
1724 | hci_dev_do_close(hdev); | |
5e130367 JH |
1725 | } else { |
1726 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 1727 | } |
611b30f7 MH |
1728 | |
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | static const struct rfkill_ops hci_rfkill_ops = { | |
1733 | .set_block = hci_rfkill_set_block, | |
1734 | }; | |
1735 | ||
ab81cbf9 JH |
1736 | static void hci_power_on(struct work_struct *work) |
1737 | { | |
1738 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1739 | int err; |
ab81cbf9 JH |
1740 | |
1741 | BT_DBG("%s", hdev->name); | |
1742 | ||
cbed0ca1 | 1743 | err = hci_dev_do_open(hdev); |
96570ffc JH |
1744 | if (err < 0) { |
1745 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 1746 | return; |
96570ffc | 1747 | } |
ab81cbf9 | 1748 | |
a5c8f270 MH |
1749 | /* During the HCI setup phase, a few error conditions are |
1750 | * ignored and they need to be checked now. If they are still | |
1751 | * valid, it is important to turn the device back off. | |
1752 | */ | |
1753 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
1754 | (hdev->dev_type == HCI_BREDR && | |
1755 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1756 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
1757 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1758 | hci_dev_do_close(hdev); | |
1759 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
1760 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1761 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 1762 | } |
ab81cbf9 | 1763 | |
a8b2d5c2 | 1764 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1765 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1766 | } |
1767 | ||
1768 | static void hci_power_off(struct work_struct *work) | |
1769 | { | |
3243553f | 1770 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1771 | power_off.work); |
ab81cbf9 JH |
1772 | |
1773 | BT_DBG("%s", hdev->name); | |
1774 | ||
8ee56540 | 1775 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1776 | } |
1777 | ||
16ab91ab JH |
1778 | static void hci_discov_off(struct work_struct *work) |
1779 | { | |
1780 | struct hci_dev *hdev; | |
1781 | u8 scan = SCAN_PAGE; | |
1782 | ||
1783 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1784 | ||
1785 | BT_DBG("%s", hdev->name); | |
1786 | ||
09fd0de5 | 1787 | hci_dev_lock(hdev); |
16ab91ab JH |
1788 | |
1789 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1790 | ||
1791 | hdev->discov_timeout = 0; | |
1792 | ||
09fd0de5 | 1793 | hci_dev_unlock(hdev); |
16ab91ab JH |
1794 | } |
1795 | ||
2aeb9a1a JH |
1796 | int hci_uuids_clear(struct hci_dev *hdev) |
1797 | { | |
4821002c | 1798 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1799 | |
4821002c JH |
1800 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1801 | list_del(&uuid->list); | |
2aeb9a1a JH |
1802 | kfree(uuid); |
1803 | } | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
55ed8ca1 JH |
1808 | int hci_link_keys_clear(struct hci_dev *hdev) |
1809 | { | |
1810 | struct list_head *p, *n; | |
1811 | ||
1812 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1813 | struct link_key *key; | |
1814 | ||
1815 | key = list_entry(p, struct link_key, list); | |
1816 | ||
1817 | list_del(p); | |
1818 | kfree(key); | |
1819 | } | |
1820 | ||
1821 | return 0; | |
1822 | } | |
1823 | ||
b899efaf VCG |
1824 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1825 | { | |
1826 | struct smp_ltk *k, *tmp; | |
1827 | ||
1828 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1829 | list_del(&k->list); | |
1830 | kfree(k); | |
1831 | } | |
1832 | ||
1833 | return 0; | |
1834 | } | |
1835 | ||
55ed8ca1 JH |
1836 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1837 | { | |
8035ded4 | 1838 | struct link_key *k; |
55ed8ca1 | 1839 | |
8035ded4 | 1840 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1841 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1842 | return k; | |
55ed8ca1 JH |
1843 | |
1844 | return NULL; | |
1845 | } | |
1846 | ||
745c0ce3 | 1847 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1848 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1849 | { |
1850 | /* Legacy key */ | |
1851 | if (key_type < 0x03) | |
745c0ce3 | 1852 | return true; |
d25e28ab JH |
1853 | |
1854 | /* Debug keys are insecure so don't store them persistently */ | |
1855 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1856 | return false; |
d25e28ab JH |
1857 | |
1858 | /* Changed combination key and there's no previous one */ | |
1859 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1860 | return false; |
d25e28ab JH |
1861 | |
1862 | /* Security mode 3 case */ | |
1863 | if (!conn) | |
745c0ce3 | 1864 | return true; |
d25e28ab JH |
1865 | |
1866 | /* Neither local nor remote side had no-bonding as requirement */ | |
1867 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1868 | return true; |
d25e28ab JH |
1869 | |
1870 | /* Local side had dedicated bonding as requirement */ | |
1871 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1872 | return true; |
d25e28ab JH |
1873 | |
1874 | /* Remote side had dedicated bonding as requirement */ | |
1875 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1876 | return true; |
d25e28ab JH |
1877 | |
1878 | /* If none of the above criteria match, then don't store the key | |
1879 | * persistently */ | |
745c0ce3 | 1880 | return false; |
d25e28ab JH |
1881 | } |
1882 | ||
c9839a11 | 1883 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1884 | { |
c9839a11 | 1885 | struct smp_ltk *k; |
75d262c2 | 1886 | |
c9839a11 VCG |
1887 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1888 | if (k->ediv != ediv || | |
a8c5fb1a | 1889 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1890 | continue; |
1891 | ||
c9839a11 | 1892 | return k; |
75d262c2 VCG |
1893 | } |
1894 | ||
1895 | return NULL; | |
1896 | } | |
75d262c2 | 1897 | |
c9839a11 | 1898 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1899 | u8 addr_type) |
75d262c2 | 1900 | { |
c9839a11 | 1901 | struct smp_ltk *k; |
75d262c2 | 1902 | |
c9839a11 VCG |
1903 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1904 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1905 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1906 | return k; |
1907 | ||
1908 | return NULL; | |
1909 | } | |
75d262c2 | 1910 | |
d25e28ab | 1911 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1912 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1913 | { |
1914 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1915 | u8 old_key_type; |
1916 | bool persistent; | |
55ed8ca1 JH |
1917 | |
1918 | old_key = hci_find_link_key(hdev, bdaddr); | |
1919 | if (old_key) { | |
1920 | old_key_type = old_key->type; | |
1921 | key = old_key; | |
1922 | } else { | |
12adcf3a | 1923 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1924 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1925 | if (!key) | |
1926 | return -ENOMEM; | |
1927 | list_add(&key->list, &hdev->link_keys); | |
1928 | } | |
1929 | ||
6ed93dc6 | 1930 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1931 | |
d25e28ab JH |
1932 | /* Some buggy controller combinations generate a changed |
1933 | * combination key for legacy pairing even when there's no | |
1934 | * previous key */ | |
1935 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1936 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1937 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1938 | if (conn) |
1939 | conn->key_type = type; | |
1940 | } | |
d25e28ab | 1941 | |
55ed8ca1 | 1942 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1943 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1944 | key->pin_len = pin_len; |
1945 | ||
b6020ba0 | 1946 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1947 | key->type = old_key_type; |
4748fed2 JH |
1948 | else |
1949 | key->type = type; | |
1950 | ||
4df378a1 JH |
1951 | if (!new_key) |
1952 | return 0; | |
1953 | ||
1954 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1955 | ||
744cf19e | 1956 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1957 | |
6ec5bcad VA |
1958 | if (conn) |
1959 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1960 | |
1961 | return 0; | |
1962 | } | |
1963 | ||
c9839a11 | 1964 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1965 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1966 | ediv, u8 rand[8]) |
75d262c2 | 1967 | { |
c9839a11 | 1968 | struct smp_ltk *key, *old_key; |
75d262c2 | 1969 | |
c9839a11 VCG |
1970 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1971 | return 0; | |
75d262c2 | 1972 | |
c9839a11 VCG |
1973 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1974 | if (old_key) | |
75d262c2 | 1975 | key = old_key; |
c9839a11 VCG |
1976 | else { |
1977 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1978 | if (!key) |
1979 | return -ENOMEM; | |
c9839a11 | 1980 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1981 | } |
1982 | ||
75d262c2 | 1983 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1984 | key->bdaddr_type = addr_type; |
1985 | memcpy(key->val, tk, sizeof(key->val)); | |
1986 | key->authenticated = authenticated; | |
1987 | key->ediv = ediv; | |
1988 | key->enc_size = enc_size; | |
1989 | key->type = type; | |
1990 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1991 | |
c9839a11 VCG |
1992 | if (!new_key) |
1993 | return 0; | |
75d262c2 | 1994 | |
261cc5aa VCG |
1995 | if (type & HCI_SMP_LTK) |
1996 | mgmt_new_ltk(hdev, key, 1); | |
1997 | ||
75d262c2 VCG |
1998 | return 0; |
1999 | } | |
2000 | ||
55ed8ca1 JH |
2001 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2002 | { | |
2003 | struct link_key *key; | |
2004 | ||
2005 | key = hci_find_link_key(hdev, bdaddr); | |
2006 | if (!key) | |
2007 | return -ENOENT; | |
2008 | ||
6ed93dc6 | 2009 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
2010 | |
2011 | list_del(&key->list); | |
2012 | kfree(key); | |
2013 | ||
2014 | return 0; | |
2015 | } | |
2016 | ||
b899efaf VCG |
2017 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2018 | { | |
2019 | struct smp_ltk *k, *tmp; | |
2020 | ||
2021 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
2022 | if (bacmp(bdaddr, &k->bdaddr)) | |
2023 | continue; | |
2024 | ||
6ed93dc6 | 2025 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
2026 | |
2027 | list_del(&k->list); | |
2028 | kfree(k); | |
2029 | } | |
2030 | ||
2031 | return 0; | |
2032 | } | |
2033 | ||
6bd32326 | 2034 | /* HCI command timer function */ |
bda4f23a | 2035 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
2036 | { |
2037 | struct hci_dev *hdev = (void *) arg; | |
2038 | ||
bda4f23a AE |
2039 | if (hdev->sent_cmd) { |
2040 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2041 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2042 | ||
2043 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2044 | } else { | |
2045 | BT_ERR("%s command tx timeout", hdev->name); | |
2046 | } | |
2047 | ||
6bd32326 | 2048 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2049 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2050 | } |
2051 | ||
2763eda6 | 2052 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 2053 | bdaddr_t *bdaddr) |
2763eda6 SJ |
2054 | { |
2055 | struct oob_data *data; | |
2056 | ||
2057 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
2058 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
2059 | return data; | |
2060 | ||
2061 | return NULL; | |
2062 | } | |
2063 | ||
2064 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
2065 | { | |
2066 | struct oob_data *data; | |
2067 | ||
2068 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2069 | if (!data) | |
2070 | return -ENOENT; | |
2071 | ||
6ed93dc6 | 2072 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2073 | |
2074 | list_del(&data->list); | |
2075 | kfree(data); | |
2076 | ||
2077 | return 0; | |
2078 | } | |
2079 | ||
2080 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
2081 | { | |
2082 | struct oob_data *data, *n; | |
2083 | ||
2084 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2085 | list_del(&data->list); | |
2086 | kfree(data); | |
2087 | } | |
2088 | ||
2089 | return 0; | |
2090 | } | |
2091 | ||
2092 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 2093 | u8 *randomizer) |
2763eda6 SJ |
2094 | { |
2095 | struct oob_data *data; | |
2096 | ||
2097 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2098 | ||
2099 | if (!data) { | |
2100 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
2101 | if (!data) | |
2102 | return -ENOMEM; | |
2103 | ||
2104 | bacpy(&data->bdaddr, bdaddr); | |
2105 | list_add(&data->list, &hdev->remote_oob_data); | |
2106 | } | |
2107 | ||
2108 | memcpy(data->hash, hash, sizeof(data->hash)); | |
2109 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
2110 | ||
6ed93dc6 | 2111 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2112 | |
2113 | return 0; | |
2114 | } | |
2115 | ||
04124681 | 2116 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 2117 | { |
8035ded4 | 2118 | struct bdaddr_list *b; |
b2a66aad | 2119 | |
8035ded4 | 2120 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
2121 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
2122 | return b; | |
b2a66aad AJ |
2123 | |
2124 | return NULL; | |
2125 | } | |
2126 | ||
2127 | int hci_blacklist_clear(struct hci_dev *hdev) | |
2128 | { | |
2129 | struct list_head *p, *n; | |
2130 | ||
2131 | list_for_each_safe(p, n, &hdev->blacklist) { | |
2132 | struct bdaddr_list *b; | |
2133 | ||
2134 | b = list_entry(p, struct bdaddr_list, list); | |
2135 | ||
2136 | list_del(p); | |
2137 | kfree(b); | |
2138 | } | |
2139 | ||
2140 | return 0; | |
2141 | } | |
2142 | ||
88c1fe4b | 2143 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2144 | { |
2145 | struct bdaddr_list *entry; | |
b2a66aad AJ |
2146 | |
2147 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
2148 | return -EBADF; | |
2149 | ||
5e762444 AJ |
2150 | if (hci_blacklist_lookup(hdev, bdaddr)) |
2151 | return -EEXIST; | |
b2a66aad AJ |
2152 | |
2153 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
2154 | if (!entry) |
2155 | return -ENOMEM; | |
b2a66aad AJ |
2156 | |
2157 | bacpy(&entry->bdaddr, bdaddr); | |
2158 | ||
2159 | list_add(&entry->list, &hdev->blacklist); | |
2160 | ||
88c1fe4b | 2161 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
2162 | } |
2163 | ||
88c1fe4b | 2164 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2165 | { |
2166 | struct bdaddr_list *entry; | |
b2a66aad | 2167 | |
1ec918ce | 2168 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 2169 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
2170 | |
2171 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 2172 | if (!entry) |
5e762444 | 2173 | return -ENOENT; |
b2a66aad AJ |
2174 | |
2175 | list_del(&entry->list); | |
2176 | kfree(entry); | |
2177 | ||
88c1fe4b | 2178 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
2179 | } |
2180 | ||
4c87eaab | 2181 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2182 | { |
4c87eaab AG |
2183 | if (status) { |
2184 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2185 | |
4c87eaab AG |
2186 | hci_dev_lock(hdev); |
2187 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2188 | hci_dev_unlock(hdev); | |
2189 | return; | |
2190 | } | |
7ba8b4be AG |
2191 | } |
2192 | ||
4c87eaab | 2193 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2194 | { |
4c87eaab AG |
2195 | /* General inquiry access code (GIAC) */ |
2196 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2197 | struct hci_request req; | |
2198 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2199 | int err; |
2200 | ||
4c87eaab AG |
2201 | if (status) { |
2202 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2203 | return; | |
2204 | } | |
7ba8b4be | 2205 | |
4c87eaab AG |
2206 | switch (hdev->discovery.type) { |
2207 | case DISCOV_TYPE_LE: | |
2208 | hci_dev_lock(hdev); | |
2209 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2210 | hci_dev_unlock(hdev); | |
2211 | break; | |
7ba8b4be | 2212 | |
4c87eaab AG |
2213 | case DISCOV_TYPE_INTERLEAVED: |
2214 | hci_req_init(&req, hdev); | |
7ba8b4be | 2215 | |
4c87eaab AG |
2216 | memset(&cp, 0, sizeof(cp)); |
2217 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2218 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2219 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2220 | |
4c87eaab | 2221 | hci_dev_lock(hdev); |
7dbfac1d | 2222 | |
4c87eaab | 2223 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2224 | |
4c87eaab AG |
2225 | err = hci_req_run(&req, inquiry_complete); |
2226 | if (err) { | |
2227 | BT_ERR("Inquiry request failed: err %d", err); | |
2228 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2229 | } | |
7dbfac1d | 2230 | |
4c87eaab AG |
2231 | hci_dev_unlock(hdev); |
2232 | break; | |
7dbfac1d | 2233 | } |
7dbfac1d AG |
2234 | } |
2235 | ||
7ba8b4be AG |
2236 | static void le_scan_disable_work(struct work_struct *work) |
2237 | { | |
2238 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2239 | le_scan_disable.work); |
7ba8b4be | 2240 | struct hci_cp_le_set_scan_enable cp; |
4c87eaab AG |
2241 | struct hci_request req; |
2242 | int err; | |
7ba8b4be AG |
2243 | |
2244 | BT_DBG("%s", hdev->name); | |
2245 | ||
4c87eaab | 2246 | hci_req_init(&req, hdev); |
28b75a89 | 2247 | |
7ba8b4be | 2248 | memset(&cp, 0, sizeof(cp)); |
4c87eaab AG |
2249 | cp.enable = LE_SCAN_DISABLE; |
2250 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
28b75a89 | 2251 | |
4c87eaab AG |
2252 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2253 | if (err) | |
2254 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2255 | } |
2256 | ||
9be0dab7 DH |
2257 | /* Alloc HCI device */ |
2258 | struct hci_dev *hci_alloc_dev(void) | |
2259 | { | |
2260 | struct hci_dev *hdev; | |
2261 | ||
2262 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2263 | if (!hdev) | |
2264 | return NULL; | |
2265 | ||
b1b813d4 DH |
2266 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2267 | hdev->esco_type = (ESCO_HV1); | |
2268 | hdev->link_mode = (HCI_LM_ACCEPT); | |
2269 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2270 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2271 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2272 | |
b1b813d4 DH |
2273 | hdev->sniff_max_interval = 800; |
2274 | hdev->sniff_min_interval = 80; | |
2275 | ||
2276 | mutex_init(&hdev->lock); | |
2277 | mutex_init(&hdev->req_lock); | |
2278 | ||
2279 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2280 | INIT_LIST_HEAD(&hdev->blacklist); | |
2281 | INIT_LIST_HEAD(&hdev->uuids); | |
2282 | INIT_LIST_HEAD(&hdev->link_keys); | |
2283 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2284 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2285 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2286 | |
2287 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2288 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2289 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2290 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 2291 | |
b1b813d4 DH |
2292 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2293 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2294 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2295 | ||
b1b813d4 DH |
2296 | skb_queue_head_init(&hdev->rx_q); |
2297 | skb_queue_head_init(&hdev->cmd_q); | |
2298 | skb_queue_head_init(&hdev->raw_q); | |
2299 | ||
2300 | init_waitqueue_head(&hdev->req_wait_q); | |
2301 | ||
bda4f23a | 2302 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2303 | |
b1b813d4 DH |
2304 | hci_init_sysfs(hdev); |
2305 | discovery_init(hdev); | |
9be0dab7 DH |
2306 | |
2307 | return hdev; | |
2308 | } | |
2309 | EXPORT_SYMBOL(hci_alloc_dev); | |
2310 | ||
2311 | /* Free HCI device */ | |
2312 | void hci_free_dev(struct hci_dev *hdev) | |
2313 | { | |
9be0dab7 DH |
2314 | /* will free via device release */ |
2315 | put_device(&hdev->dev); | |
2316 | } | |
2317 | EXPORT_SYMBOL(hci_free_dev); | |
2318 | ||
1da177e4 LT |
2319 | /* Register HCI device */ |
2320 | int hci_register_dev(struct hci_dev *hdev) | |
2321 | { | |
b1b813d4 | 2322 | int id, error; |
1da177e4 | 2323 | |
010666a1 | 2324 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2325 | return -EINVAL; |
2326 | ||
08add513 MM |
2327 | /* Do not allow HCI_AMP devices to register at index 0, |
2328 | * so the index can be used as the AMP controller ID. | |
2329 | */ | |
3df92b31 SL |
2330 | switch (hdev->dev_type) { |
2331 | case HCI_BREDR: | |
2332 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2333 | break; | |
2334 | case HCI_AMP: | |
2335 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2336 | break; | |
2337 | default: | |
2338 | return -EINVAL; | |
1da177e4 | 2339 | } |
8e87d142 | 2340 | |
3df92b31 SL |
2341 | if (id < 0) |
2342 | return id; | |
2343 | ||
1da177e4 LT |
2344 | sprintf(hdev->name, "hci%d", id); |
2345 | hdev->id = id; | |
2d8b3a11 AE |
2346 | |
2347 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2348 | ||
d8537548 KC |
2349 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2350 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
2351 | if (!hdev->workqueue) { |
2352 | error = -ENOMEM; | |
2353 | goto err; | |
2354 | } | |
f48fd9c8 | 2355 | |
d8537548 KC |
2356 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2357 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
2358 | if (!hdev->req_workqueue) { |
2359 | destroy_workqueue(hdev->workqueue); | |
2360 | error = -ENOMEM; | |
2361 | goto err; | |
2362 | } | |
2363 | ||
33ca954d DH |
2364 | error = hci_add_sysfs(hdev); |
2365 | if (error < 0) | |
2366 | goto err_wqueue; | |
1da177e4 | 2367 | |
611b30f7 | 2368 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2369 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2370 | hdev); | |
611b30f7 MH |
2371 | if (hdev->rfkill) { |
2372 | if (rfkill_register(hdev->rfkill) < 0) { | |
2373 | rfkill_destroy(hdev->rfkill); | |
2374 | hdev->rfkill = NULL; | |
2375 | } | |
2376 | } | |
2377 | ||
5e130367 JH |
2378 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
2379 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
2380 | ||
a8b2d5c2 | 2381 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 2382 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 2383 | |
01cd3404 | 2384 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
2385 | /* Assume BR/EDR support until proven otherwise (such as |
2386 | * through reading supported features during init. | |
2387 | */ | |
2388 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2389 | } | |
ce2be9ac | 2390 | |
fcee3377 GP |
2391 | write_lock(&hci_dev_list_lock); |
2392 | list_add(&hdev->list, &hci_dev_list); | |
2393 | write_unlock(&hci_dev_list_lock); | |
2394 | ||
1da177e4 | 2395 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2396 | hci_dev_hold(hdev); |
1da177e4 | 2397 | |
19202573 | 2398 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2399 | |
1da177e4 | 2400 | return id; |
f48fd9c8 | 2401 | |
33ca954d DH |
2402 | err_wqueue: |
2403 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2404 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2405 | err: |
3df92b31 | 2406 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 2407 | |
33ca954d | 2408 | return error; |
1da177e4 LT |
2409 | } |
2410 | EXPORT_SYMBOL(hci_register_dev); | |
2411 | ||
2412 | /* Unregister HCI device */ | |
59735631 | 2413 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2414 | { |
3df92b31 | 2415 | int i, id; |
ef222013 | 2416 | |
c13854ce | 2417 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2418 | |
94324962 JH |
2419 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2420 | ||
3df92b31 SL |
2421 | id = hdev->id; |
2422 | ||
f20d09d5 | 2423 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2424 | list_del(&hdev->list); |
f20d09d5 | 2425 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2426 | |
2427 | hci_dev_do_close(hdev); | |
2428 | ||
cd4c5391 | 2429 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2430 | kfree_skb(hdev->reassembly[i]); |
2431 | ||
b9b5ef18 GP |
2432 | cancel_work_sync(&hdev->power_on); |
2433 | ||
ab81cbf9 | 2434 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2435 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2436 | hci_dev_lock(hdev); |
744cf19e | 2437 | mgmt_index_removed(hdev); |
09fd0de5 | 2438 | hci_dev_unlock(hdev); |
56e5cb86 | 2439 | } |
ab81cbf9 | 2440 | |
2e58ef3e JH |
2441 | /* mgmt_index_removed should take care of emptying the |
2442 | * pending list */ | |
2443 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2444 | ||
1da177e4 LT |
2445 | hci_notify(hdev, HCI_DEV_UNREG); |
2446 | ||
611b30f7 MH |
2447 | if (hdev->rfkill) { |
2448 | rfkill_unregister(hdev->rfkill); | |
2449 | rfkill_destroy(hdev->rfkill); | |
2450 | } | |
2451 | ||
ce242970 | 2452 | hci_del_sysfs(hdev); |
147e2d59 | 2453 | |
f48fd9c8 | 2454 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2455 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2456 | |
09fd0de5 | 2457 | hci_dev_lock(hdev); |
e2e0cacb | 2458 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2459 | hci_uuids_clear(hdev); |
55ed8ca1 | 2460 | hci_link_keys_clear(hdev); |
b899efaf | 2461 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2462 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2463 | hci_dev_unlock(hdev); |
e2e0cacb | 2464 | |
dc946bd8 | 2465 | hci_dev_put(hdev); |
3df92b31 SL |
2466 | |
2467 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2468 | } |
2469 | EXPORT_SYMBOL(hci_unregister_dev); | |
2470 | ||
2471 | /* Suspend HCI device */ | |
2472 | int hci_suspend_dev(struct hci_dev *hdev) | |
2473 | { | |
2474 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2475 | return 0; | |
2476 | } | |
2477 | EXPORT_SYMBOL(hci_suspend_dev); | |
2478 | ||
2479 | /* Resume HCI device */ | |
2480 | int hci_resume_dev(struct hci_dev *hdev) | |
2481 | { | |
2482 | hci_notify(hdev, HCI_DEV_RESUME); | |
2483 | return 0; | |
2484 | } | |
2485 | EXPORT_SYMBOL(hci_resume_dev); | |
2486 | ||
76bca880 | 2487 | /* Receive frame from HCI drivers */ |
e1a26170 | 2488 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 2489 | { |
76bca880 | 2490 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 2491 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2492 | kfree_skb(skb); |
2493 | return -ENXIO; | |
2494 | } | |
2495 | ||
d82603c6 | 2496 | /* Incoming skb */ |
76bca880 MH |
2497 | bt_cb(skb)->incoming = 1; |
2498 | ||
2499 | /* Time stamp */ | |
2500 | __net_timestamp(skb); | |
2501 | ||
76bca880 | 2502 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2503 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2504 | |
76bca880 MH |
2505 | return 0; |
2506 | } | |
2507 | EXPORT_SYMBOL(hci_recv_frame); | |
2508 | ||
33e882a5 | 2509 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2510 | int count, __u8 index) |
33e882a5 SS |
2511 | { |
2512 | int len = 0; | |
2513 | int hlen = 0; | |
2514 | int remain = count; | |
2515 | struct sk_buff *skb; | |
2516 | struct bt_skb_cb *scb; | |
2517 | ||
2518 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2519 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2520 | return -EILSEQ; |
2521 | ||
2522 | skb = hdev->reassembly[index]; | |
2523 | ||
2524 | if (!skb) { | |
2525 | switch (type) { | |
2526 | case HCI_ACLDATA_PKT: | |
2527 | len = HCI_MAX_FRAME_SIZE; | |
2528 | hlen = HCI_ACL_HDR_SIZE; | |
2529 | break; | |
2530 | case HCI_EVENT_PKT: | |
2531 | len = HCI_MAX_EVENT_SIZE; | |
2532 | hlen = HCI_EVENT_HDR_SIZE; | |
2533 | break; | |
2534 | case HCI_SCODATA_PKT: | |
2535 | len = HCI_MAX_SCO_SIZE; | |
2536 | hlen = HCI_SCO_HDR_SIZE; | |
2537 | break; | |
2538 | } | |
2539 | ||
1e429f38 | 2540 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2541 | if (!skb) |
2542 | return -ENOMEM; | |
2543 | ||
2544 | scb = (void *) skb->cb; | |
2545 | scb->expect = hlen; | |
2546 | scb->pkt_type = type; | |
2547 | ||
33e882a5 SS |
2548 | hdev->reassembly[index] = skb; |
2549 | } | |
2550 | ||
2551 | while (count) { | |
2552 | scb = (void *) skb->cb; | |
89bb46d0 | 2553 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2554 | |
2555 | memcpy(skb_put(skb, len), data, len); | |
2556 | ||
2557 | count -= len; | |
2558 | data += len; | |
2559 | scb->expect -= len; | |
2560 | remain = count; | |
2561 | ||
2562 | switch (type) { | |
2563 | case HCI_EVENT_PKT: | |
2564 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2565 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2566 | scb->expect = h->plen; | |
2567 | ||
2568 | if (skb_tailroom(skb) < scb->expect) { | |
2569 | kfree_skb(skb); | |
2570 | hdev->reassembly[index] = NULL; | |
2571 | return -ENOMEM; | |
2572 | } | |
2573 | } | |
2574 | break; | |
2575 | ||
2576 | case HCI_ACLDATA_PKT: | |
2577 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2578 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2579 | scb->expect = __le16_to_cpu(h->dlen); | |
2580 | ||
2581 | if (skb_tailroom(skb) < scb->expect) { | |
2582 | kfree_skb(skb); | |
2583 | hdev->reassembly[index] = NULL; | |
2584 | return -ENOMEM; | |
2585 | } | |
2586 | } | |
2587 | break; | |
2588 | ||
2589 | case HCI_SCODATA_PKT: | |
2590 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2591 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2592 | scb->expect = h->dlen; | |
2593 | ||
2594 | if (skb_tailroom(skb) < scb->expect) { | |
2595 | kfree_skb(skb); | |
2596 | hdev->reassembly[index] = NULL; | |
2597 | return -ENOMEM; | |
2598 | } | |
2599 | } | |
2600 | break; | |
2601 | } | |
2602 | ||
2603 | if (scb->expect == 0) { | |
2604 | /* Complete frame */ | |
2605 | ||
2606 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 2607 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
2608 | |
2609 | hdev->reassembly[index] = NULL; | |
2610 | return remain; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | return remain; | |
2615 | } | |
2616 | ||
ef222013 MH |
2617 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2618 | { | |
f39a3c06 SS |
2619 | int rem = 0; |
2620 | ||
ef222013 MH |
2621 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2622 | return -EILSEQ; | |
2623 | ||
da5f6c37 | 2624 | while (count) { |
1e429f38 | 2625 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2626 | if (rem < 0) |
2627 | return rem; | |
ef222013 | 2628 | |
f39a3c06 SS |
2629 | data += (count - rem); |
2630 | count = rem; | |
f81c6224 | 2631 | } |
ef222013 | 2632 | |
f39a3c06 | 2633 | return rem; |
ef222013 MH |
2634 | } |
2635 | EXPORT_SYMBOL(hci_recv_fragment); | |
2636 | ||
99811510 SS |
2637 | #define STREAM_REASSEMBLY 0 |
2638 | ||
2639 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2640 | { | |
2641 | int type; | |
2642 | int rem = 0; | |
2643 | ||
da5f6c37 | 2644 | while (count) { |
99811510 SS |
2645 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2646 | ||
2647 | if (!skb) { | |
2648 | struct { char type; } *pkt; | |
2649 | ||
2650 | /* Start of the frame */ | |
2651 | pkt = data; | |
2652 | type = pkt->type; | |
2653 | ||
2654 | data++; | |
2655 | count--; | |
2656 | } else | |
2657 | type = bt_cb(skb)->pkt_type; | |
2658 | ||
1e429f38 | 2659 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2660 | STREAM_REASSEMBLY); |
99811510 SS |
2661 | if (rem < 0) |
2662 | return rem; | |
2663 | ||
2664 | data += (count - rem); | |
2665 | count = rem; | |
f81c6224 | 2666 | } |
99811510 SS |
2667 | |
2668 | return rem; | |
2669 | } | |
2670 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2671 | ||
1da177e4 LT |
2672 | /* ---- Interface to upper protocols ---- */ |
2673 | ||
1da177e4 LT |
2674 | int hci_register_cb(struct hci_cb *cb) |
2675 | { | |
2676 | BT_DBG("%p name %s", cb, cb->name); | |
2677 | ||
f20d09d5 | 2678 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2679 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2680 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2681 | |
2682 | return 0; | |
2683 | } | |
2684 | EXPORT_SYMBOL(hci_register_cb); | |
2685 | ||
2686 | int hci_unregister_cb(struct hci_cb *cb) | |
2687 | { | |
2688 | BT_DBG("%p name %s", cb, cb->name); | |
2689 | ||
f20d09d5 | 2690 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2691 | list_del(&cb->list); |
f20d09d5 | 2692 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2693 | |
2694 | return 0; | |
2695 | } | |
2696 | EXPORT_SYMBOL(hci_unregister_cb); | |
2697 | ||
51086991 | 2698 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 2699 | { |
0d48d939 | 2700 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2701 | |
cd82e61c MH |
2702 | /* Time stamp */ |
2703 | __net_timestamp(skb); | |
1da177e4 | 2704 | |
cd82e61c MH |
2705 | /* Send copy to monitor */ |
2706 | hci_send_to_monitor(hdev, skb); | |
2707 | ||
2708 | if (atomic_read(&hdev->promisc)) { | |
2709 | /* Send copy to the sockets */ | |
470fe1b5 | 2710 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2711 | } |
2712 | ||
2713 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2714 | skb_orphan(skb); | |
2715 | ||
7bd8f09f | 2716 | if (hdev->send(hdev, skb) < 0) |
51086991 | 2717 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
2718 | } |
2719 | ||
3119ae95 JH |
2720 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2721 | { | |
2722 | skb_queue_head_init(&req->cmd_q); | |
2723 | req->hdev = hdev; | |
5d73e034 | 2724 | req->err = 0; |
3119ae95 JH |
2725 | } |
2726 | ||
2727 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2728 | { | |
2729 | struct hci_dev *hdev = req->hdev; | |
2730 | struct sk_buff *skb; | |
2731 | unsigned long flags; | |
2732 | ||
2733 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2734 | ||
5d73e034 AG |
2735 | /* If an error occured during request building, remove all HCI |
2736 | * commands queued on the HCI request queue. | |
2737 | */ | |
2738 | if (req->err) { | |
2739 | skb_queue_purge(&req->cmd_q); | |
2740 | return req->err; | |
2741 | } | |
2742 | ||
3119ae95 JH |
2743 | /* Do not allow empty requests */ |
2744 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2745 | return -ENODATA; |
3119ae95 JH |
2746 | |
2747 | skb = skb_peek_tail(&req->cmd_q); | |
2748 | bt_cb(skb)->req.complete = complete; | |
2749 | ||
2750 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2751 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2752 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2753 | ||
2754 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2755 | ||
2756 | return 0; | |
2757 | } | |
2758 | ||
1ca3a9d0 | 2759 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 2760 | u32 plen, const void *param) |
1da177e4 LT |
2761 | { |
2762 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2763 | struct hci_command_hdr *hdr; | |
2764 | struct sk_buff *skb; | |
2765 | ||
1da177e4 | 2766 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2767 | if (!skb) |
2768 | return NULL; | |
1da177e4 LT |
2769 | |
2770 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2771 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2772 | hdr->plen = plen; |
2773 | ||
2774 | if (plen) | |
2775 | memcpy(skb_put(skb, plen), param, plen); | |
2776 | ||
2777 | BT_DBG("skb len %d", skb->len); | |
2778 | ||
0d48d939 | 2779 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 2780 | |
1ca3a9d0 JH |
2781 | return skb; |
2782 | } | |
2783 | ||
2784 | /* Send HCI command */ | |
07dc93dd JH |
2785 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2786 | const void *param) | |
1ca3a9d0 JH |
2787 | { |
2788 | struct sk_buff *skb; | |
2789 | ||
2790 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2791 | ||
2792 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2793 | if (!skb) { | |
2794 | BT_ERR("%s no memory for command", hdev->name); | |
2795 | return -ENOMEM; | |
2796 | } | |
2797 | ||
11714b3d JH |
2798 | /* Stand-alone HCI commands must be flaged as |
2799 | * single-command requests. | |
2800 | */ | |
2801 | bt_cb(skb)->req.start = true; | |
2802 | ||
1da177e4 | 2803 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2804 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2805 | |
2806 | return 0; | |
2807 | } | |
1da177e4 | 2808 | |
71c76a17 | 2809 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
2810 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
2811 | const void *param, u8 event) | |
71c76a17 JH |
2812 | { |
2813 | struct hci_dev *hdev = req->hdev; | |
2814 | struct sk_buff *skb; | |
2815 | ||
2816 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2817 | ||
34739c1e AG |
2818 | /* If an error occured during request building, there is no point in |
2819 | * queueing the HCI command. We can simply return. | |
2820 | */ | |
2821 | if (req->err) | |
2822 | return; | |
2823 | ||
71c76a17 JH |
2824 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2825 | if (!skb) { | |
5d73e034 AG |
2826 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2827 | hdev->name, opcode); | |
2828 | req->err = -ENOMEM; | |
e348fe6b | 2829 | return; |
71c76a17 JH |
2830 | } |
2831 | ||
2832 | if (skb_queue_empty(&req->cmd_q)) | |
2833 | bt_cb(skb)->req.start = true; | |
2834 | ||
02350a72 JH |
2835 | bt_cb(skb)->req.event = event; |
2836 | ||
71c76a17 | 2837 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2838 | } |
2839 | ||
07dc93dd JH |
2840 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
2841 | const void *param) | |
02350a72 JH |
2842 | { |
2843 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2844 | } | |
2845 | ||
1da177e4 | 2846 | /* Get data from the previously sent command */ |
a9de9248 | 2847 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2848 | { |
2849 | struct hci_command_hdr *hdr; | |
2850 | ||
2851 | if (!hdev->sent_cmd) | |
2852 | return NULL; | |
2853 | ||
2854 | hdr = (void *) hdev->sent_cmd->data; | |
2855 | ||
a9de9248 | 2856 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2857 | return NULL; |
2858 | ||
f0e09510 | 2859 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2860 | |
2861 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2862 | } | |
2863 | ||
2864 | /* Send ACL data */ | |
2865 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2866 | { | |
2867 | struct hci_acl_hdr *hdr; | |
2868 | int len = skb->len; | |
2869 | ||
badff6d0 ACM |
2870 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2871 | skb_reset_transport_header(skb); | |
9c70220b | 2872 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2873 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2874 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2875 | } |
2876 | ||
ee22be7e | 2877 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2878 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2879 | { |
ee22be7e | 2880 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2881 | struct hci_dev *hdev = conn->hdev; |
2882 | struct sk_buff *list; | |
2883 | ||
087bfd99 GP |
2884 | skb->len = skb_headlen(skb); |
2885 | skb->data_len = 0; | |
2886 | ||
2887 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2888 | |
2889 | switch (hdev->dev_type) { | |
2890 | case HCI_BREDR: | |
2891 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2892 | break; | |
2893 | case HCI_AMP: | |
2894 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2895 | break; | |
2896 | default: | |
2897 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2898 | return; | |
2899 | } | |
087bfd99 | 2900 | |
70f23020 AE |
2901 | list = skb_shinfo(skb)->frag_list; |
2902 | if (!list) { | |
1da177e4 LT |
2903 | /* Non fragmented */ |
2904 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2905 | ||
73d80deb | 2906 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2907 | } else { |
2908 | /* Fragmented */ | |
2909 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2910 | ||
2911 | skb_shinfo(skb)->frag_list = NULL; | |
2912 | ||
2913 | /* Queue all fragments atomically */ | |
af3e6359 | 2914 | spin_lock(&queue->lock); |
1da177e4 | 2915 | |
73d80deb | 2916 | __skb_queue_tail(queue, skb); |
e702112f AE |
2917 | |
2918 | flags &= ~ACL_START; | |
2919 | flags |= ACL_CONT; | |
1da177e4 LT |
2920 | do { |
2921 | skb = list; list = list->next; | |
8e87d142 | 2922 | |
0d48d939 | 2923 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2924 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2925 | |
2926 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2927 | ||
73d80deb | 2928 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2929 | } while (list); |
2930 | ||
af3e6359 | 2931 | spin_unlock(&queue->lock); |
1da177e4 | 2932 | } |
73d80deb LAD |
2933 | } |
2934 | ||
2935 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2936 | { | |
ee22be7e | 2937 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2938 | |
f0e09510 | 2939 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 2940 | |
ee22be7e | 2941 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2942 | |
3eff45ea | 2943 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2944 | } |
1da177e4 LT |
2945 | |
2946 | /* Send SCO data */ | |
0d861d8b | 2947 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2948 | { |
2949 | struct hci_dev *hdev = conn->hdev; | |
2950 | struct hci_sco_hdr hdr; | |
2951 | ||
2952 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2953 | ||
aca3192c | 2954 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2955 | hdr.dlen = skb->len; |
2956 | ||
badff6d0 ACM |
2957 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2958 | skb_reset_transport_header(skb); | |
9c70220b | 2959 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 2960 | |
0d48d939 | 2961 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2962 | |
1da177e4 | 2963 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2964 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2965 | } |
1da177e4 LT |
2966 | |
2967 | /* ---- HCI TX task (outgoing data) ---- */ | |
2968 | ||
2969 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2970 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2971 | int *quote) | |
1da177e4 LT |
2972 | { |
2973 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2974 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2975 | unsigned int num = 0, min = ~0; |
1da177e4 | 2976 | |
8e87d142 | 2977 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2978 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2979 | |
2980 | rcu_read_lock(); | |
2981 | ||
2982 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2983 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2984 | continue; |
769be974 MH |
2985 | |
2986 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2987 | continue; | |
2988 | ||
1da177e4 LT |
2989 | num++; |
2990 | ||
2991 | if (c->sent < min) { | |
2992 | min = c->sent; | |
2993 | conn = c; | |
2994 | } | |
52087a79 LAD |
2995 | |
2996 | if (hci_conn_num(hdev, type) == num) | |
2997 | break; | |
1da177e4 LT |
2998 | } |
2999 | ||
bf4c6325 GP |
3000 | rcu_read_unlock(); |
3001 | ||
1da177e4 | 3002 | if (conn) { |
6ed58ec5 VT |
3003 | int cnt, q; |
3004 | ||
3005 | switch (conn->type) { | |
3006 | case ACL_LINK: | |
3007 | cnt = hdev->acl_cnt; | |
3008 | break; | |
3009 | case SCO_LINK: | |
3010 | case ESCO_LINK: | |
3011 | cnt = hdev->sco_cnt; | |
3012 | break; | |
3013 | case LE_LINK: | |
3014 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3015 | break; | |
3016 | default: | |
3017 | cnt = 0; | |
3018 | BT_ERR("Unknown link type"); | |
3019 | } | |
3020 | ||
3021 | q = cnt / num; | |
1da177e4 LT |
3022 | *quote = q ? q : 1; |
3023 | } else | |
3024 | *quote = 0; | |
3025 | ||
3026 | BT_DBG("conn %p quote %d", conn, *quote); | |
3027 | return conn; | |
3028 | } | |
3029 | ||
6039aa73 | 3030 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3031 | { |
3032 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3033 | struct hci_conn *c; |
1da177e4 | 3034 | |
bae1f5d9 | 3035 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3036 | |
bf4c6325 GP |
3037 | rcu_read_lock(); |
3038 | ||
1da177e4 | 3039 | /* Kill stalled connections */ |
bf4c6325 | 3040 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3041 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3042 | BT_ERR("%s killing stalled connection %pMR", |
3043 | hdev->name, &c->dst); | |
bed71748 | 3044 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3045 | } |
3046 | } | |
bf4c6325 GP |
3047 | |
3048 | rcu_read_unlock(); | |
1da177e4 LT |
3049 | } |
3050 | ||
6039aa73 GP |
3051 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3052 | int *quote) | |
1da177e4 | 3053 | { |
73d80deb LAD |
3054 | struct hci_conn_hash *h = &hdev->conn_hash; |
3055 | struct hci_chan *chan = NULL; | |
abc5de8f | 3056 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3057 | struct hci_conn *conn; |
73d80deb LAD |
3058 | int cnt, q, conn_num = 0; |
3059 | ||
3060 | BT_DBG("%s", hdev->name); | |
3061 | ||
bf4c6325 GP |
3062 | rcu_read_lock(); |
3063 | ||
3064 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3065 | struct hci_chan *tmp; |
3066 | ||
3067 | if (conn->type != type) | |
3068 | continue; | |
3069 | ||
3070 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3071 | continue; | |
3072 | ||
3073 | conn_num++; | |
3074 | ||
8192edef | 3075 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3076 | struct sk_buff *skb; |
3077 | ||
3078 | if (skb_queue_empty(&tmp->data_q)) | |
3079 | continue; | |
3080 | ||
3081 | skb = skb_peek(&tmp->data_q); | |
3082 | if (skb->priority < cur_prio) | |
3083 | continue; | |
3084 | ||
3085 | if (skb->priority > cur_prio) { | |
3086 | num = 0; | |
3087 | min = ~0; | |
3088 | cur_prio = skb->priority; | |
3089 | } | |
3090 | ||
3091 | num++; | |
3092 | ||
3093 | if (conn->sent < min) { | |
3094 | min = conn->sent; | |
3095 | chan = tmp; | |
3096 | } | |
3097 | } | |
3098 | ||
3099 | if (hci_conn_num(hdev, type) == conn_num) | |
3100 | break; | |
3101 | } | |
3102 | ||
bf4c6325 GP |
3103 | rcu_read_unlock(); |
3104 | ||
73d80deb LAD |
3105 | if (!chan) |
3106 | return NULL; | |
3107 | ||
3108 | switch (chan->conn->type) { | |
3109 | case ACL_LINK: | |
3110 | cnt = hdev->acl_cnt; | |
3111 | break; | |
bd1eb66b AE |
3112 | case AMP_LINK: |
3113 | cnt = hdev->block_cnt; | |
3114 | break; | |
73d80deb LAD |
3115 | case SCO_LINK: |
3116 | case ESCO_LINK: | |
3117 | cnt = hdev->sco_cnt; | |
3118 | break; | |
3119 | case LE_LINK: | |
3120 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3121 | break; | |
3122 | default: | |
3123 | cnt = 0; | |
3124 | BT_ERR("Unknown link type"); | |
3125 | } | |
3126 | ||
3127 | q = cnt / num; | |
3128 | *quote = q ? q : 1; | |
3129 | BT_DBG("chan %p quote %d", chan, *quote); | |
3130 | return chan; | |
3131 | } | |
3132 | ||
02b20f0b LAD |
3133 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3134 | { | |
3135 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3136 | struct hci_conn *conn; | |
3137 | int num = 0; | |
3138 | ||
3139 | BT_DBG("%s", hdev->name); | |
3140 | ||
bf4c6325 GP |
3141 | rcu_read_lock(); |
3142 | ||
3143 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3144 | struct hci_chan *chan; |
3145 | ||
3146 | if (conn->type != type) | |
3147 | continue; | |
3148 | ||
3149 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3150 | continue; | |
3151 | ||
3152 | num++; | |
3153 | ||
8192edef | 3154 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3155 | struct sk_buff *skb; |
3156 | ||
3157 | if (chan->sent) { | |
3158 | chan->sent = 0; | |
3159 | continue; | |
3160 | } | |
3161 | ||
3162 | if (skb_queue_empty(&chan->data_q)) | |
3163 | continue; | |
3164 | ||
3165 | skb = skb_peek(&chan->data_q); | |
3166 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3167 | continue; | |
3168 | ||
3169 | skb->priority = HCI_PRIO_MAX - 1; | |
3170 | ||
3171 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3172 | skb->priority); |
02b20f0b LAD |
3173 | } |
3174 | ||
3175 | if (hci_conn_num(hdev, type) == num) | |
3176 | break; | |
3177 | } | |
bf4c6325 GP |
3178 | |
3179 | rcu_read_unlock(); | |
3180 | ||
02b20f0b LAD |
3181 | } |
3182 | ||
b71d385a AE |
3183 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3184 | { | |
3185 | /* Calculate count of blocks used by this packet */ | |
3186 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3187 | } | |
3188 | ||
6039aa73 | 3189 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3190 | { |
1da177e4 LT |
3191 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3192 | /* ACL tx timeout must be longer than maximum | |
3193 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3194 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3195 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3196 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3197 | } |
63d2bc1b | 3198 | } |
1da177e4 | 3199 | |
6039aa73 | 3200 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3201 | { |
3202 | unsigned int cnt = hdev->acl_cnt; | |
3203 | struct hci_chan *chan; | |
3204 | struct sk_buff *skb; | |
3205 | int quote; | |
3206 | ||
3207 | __check_timeout(hdev, cnt); | |
04837f64 | 3208 | |
73d80deb | 3209 | while (hdev->acl_cnt && |
a8c5fb1a | 3210 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3211 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3212 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3213 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3214 | skb->len, skb->priority); |
73d80deb | 3215 | |
ec1cce24 LAD |
3216 | /* Stop if priority has changed */ |
3217 | if (skb->priority < priority) | |
3218 | break; | |
3219 | ||
3220 | skb = skb_dequeue(&chan->data_q); | |
3221 | ||
73d80deb | 3222 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3223 | bt_cb(skb)->force_active); |
04837f64 | 3224 | |
57d17d70 | 3225 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3226 | hdev->acl_last_tx = jiffies; |
3227 | ||
3228 | hdev->acl_cnt--; | |
73d80deb LAD |
3229 | chan->sent++; |
3230 | chan->conn->sent++; | |
1da177e4 LT |
3231 | } |
3232 | } | |
02b20f0b LAD |
3233 | |
3234 | if (cnt != hdev->acl_cnt) | |
3235 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3236 | } |
3237 | ||
6039aa73 | 3238 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3239 | { |
63d2bc1b | 3240 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3241 | struct hci_chan *chan; |
3242 | struct sk_buff *skb; | |
3243 | int quote; | |
bd1eb66b | 3244 | u8 type; |
b71d385a | 3245 | |
63d2bc1b | 3246 | __check_timeout(hdev, cnt); |
b71d385a | 3247 | |
bd1eb66b AE |
3248 | BT_DBG("%s", hdev->name); |
3249 | ||
3250 | if (hdev->dev_type == HCI_AMP) | |
3251 | type = AMP_LINK; | |
3252 | else | |
3253 | type = ACL_LINK; | |
3254 | ||
b71d385a | 3255 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3256 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3257 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3258 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3259 | int blocks; | |
3260 | ||
3261 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3262 | skb->len, skb->priority); |
b71d385a AE |
3263 | |
3264 | /* Stop if priority has changed */ | |
3265 | if (skb->priority < priority) | |
3266 | break; | |
3267 | ||
3268 | skb = skb_dequeue(&chan->data_q); | |
3269 | ||
3270 | blocks = __get_blocks(hdev, skb); | |
3271 | if (blocks > hdev->block_cnt) | |
3272 | return; | |
3273 | ||
3274 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3275 | bt_cb(skb)->force_active); |
b71d385a | 3276 | |
57d17d70 | 3277 | hci_send_frame(hdev, skb); |
b71d385a AE |
3278 | hdev->acl_last_tx = jiffies; |
3279 | ||
3280 | hdev->block_cnt -= blocks; | |
3281 | quote -= blocks; | |
3282 | ||
3283 | chan->sent += blocks; | |
3284 | chan->conn->sent += blocks; | |
3285 | } | |
3286 | } | |
3287 | ||
3288 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3289 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3290 | } |
3291 | ||
6039aa73 | 3292 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3293 | { |
3294 | BT_DBG("%s", hdev->name); | |
3295 | ||
bd1eb66b AE |
3296 | /* No ACL link over BR/EDR controller */ |
3297 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3298 | return; | |
3299 | ||
3300 | /* No AMP link over AMP controller */ | |
3301 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3302 | return; |
3303 | ||
3304 | switch (hdev->flow_ctl_mode) { | |
3305 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3306 | hci_sched_acl_pkt(hdev); | |
3307 | break; | |
3308 | ||
3309 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3310 | hci_sched_acl_blk(hdev); | |
3311 | break; | |
3312 | } | |
3313 | } | |
3314 | ||
1da177e4 | 3315 | /* Schedule SCO */ |
6039aa73 | 3316 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3317 | { |
3318 | struct hci_conn *conn; | |
3319 | struct sk_buff *skb; | |
3320 | int quote; | |
3321 | ||
3322 | BT_DBG("%s", hdev->name); | |
3323 | ||
52087a79 LAD |
3324 | if (!hci_conn_num(hdev, SCO_LINK)) |
3325 | return; | |
3326 | ||
1da177e4 LT |
3327 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3328 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3329 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3330 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3331 | |
3332 | conn->sent++; | |
3333 | if (conn->sent == ~0) | |
3334 | conn->sent = 0; | |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | ||
6039aa73 | 3339 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3340 | { |
3341 | struct hci_conn *conn; | |
3342 | struct sk_buff *skb; | |
3343 | int quote; | |
3344 | ||
3345 | BT_DBG("%s", hdev->name); | |
3346 | ||
52087a79 LAD |
3347 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3348 | return; | |
3349 | ||
8fc9ced3 GP |
3350 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3351 | "e))) { | |
b6a0dc82 MH |
3352 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3353 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3354 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3355 | |
3356 | conn->sent++; | |
3357 | if (conn->sent == ~0) | |
3358 | conn->sent = 0; | |
3359 | } | |
3360 | } | |
3361 | } | |
3362 | ||
6039aa73 | 3363 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3364 | { |
73d80deb | 3365 | struct hci_chan *chan; |
6ed58ec5 | 3366 | struct sk_buff *skb; |
02b20f0b | 3367 | int quote, cnt, tmp; |
6ed58ec5 VT |
3368 | |
3369 | BT_DBG("%s", hdev->name); | |
3370 | ||
52087a79 LAD |
3371 | if (!hci_conn_num(hdev, LE_LINK)) |
3372 | return; | |
3373 | ||
6ed58ec5 VT |
3374 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3375 | /* LE tx timeout must be longer than maximum | |
3376 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3377 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3378 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3379 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3380 | } |
3381 | ||
3382 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3383 | tmp = cnt; |
73d80deb | 3384 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3385 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3386 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3387 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3388 | skb->len, skb->priority); |
6ed58ec5 | 3389 | |
ec1cce24 LAD |
3390 | /* Stop if priority has changed */ |
3391 | if (skb->priority < priority) | |
3392 | break; | |
3393 | ||
3394 | skb = skb_dequeue(&chan->data_q); | |
3395 | ||
57d17d70 | 3396 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3397 | hdev->le_last_tx = jiffies; |
3398 | ||
3399 | cnt--; | |
73d80deb LAD |
3400 | chan->sent++; |
3401 | chan->conn->sent++; | |
6ed58ec5 VT |
3402 | } |
3403 | } | |
73d80deb | 3404 | |
6ed58ec5 VT |
3405 | if (hdev->le_pkts) |
3406 | hdev->le_cnt = cnt; | |
3407 | else | |
3408 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3409 | |
3410 | if (cnt != tmp) | |
3411 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3412 | } |
3413 | ||
3eff45ea | 3414 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3415 | { |
3eff45ea | 3416 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3417 | struct sk_buff *skb; |
3418 | ||
6ed58ec5 | 3419 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3420 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3421 | |
52de599e MH |
3422 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
3423 | /* Schedule queues and send stuff to HCI driver */ | |
3424 | hci_sched_acl(hdev); | |
3425 | hci_sched_sco(hdev); | |
3426 | hci_sched_esco(hdev); | |
3427 | hci_sched_le(hdev); | |
3428 | } | |
6ed58ec5 | 3429 | |
1da177e4 LT |
3430 | /* Send next queued raw (unknown type) packet */ |
3431 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3432 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3433 | } |
3434 | ||
25985edc | 3435 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3436 | |
3437 | /* ACL data packet */ | |
6039aa73 | 3438 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3439 | { |
3440 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3441 | struct hci_conn *conn; | |
3442 | __u16 handle, flags; | |
3443 | ||
3444 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3445 | ||
3446 | handle = __le16_to_cpu(hdr->handle); | |
3447 | flags = hci_flags(handle); | |
3448 | handle = hci_handle(handle); | |
3449 | ||
f0e09510 | 3450 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3451 | handle, flags); |
1da177e4 LT |
3452 | |
3453 | hdev->stat.acl_rx++; | |
3454 | ||
3455 | hci_dev_lock(hdev); | |
3456 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3457 | hci_dev_unlock(hdev); | |
8e87d142 | 3458 | |
1da177e4 | 3459 | if (conn) { |
65983fc7 | 3460 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3461 | |
1da177e4 | 3462 | /* Send to upper protocol */ |
686ebf28 UF |
3463 | l2cap_recv_acldata(conn, skb, flags); |
3464 | return; | |
1da177e4 | 3465 | } else { |
8e87d142 | 3466 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3467 | hdev->name, handle); |
1da177e4 LT |
3468 | } |
3469 | ||
3470 | kfree_skb(skb); | |
3471 | } | |
3472 | ||
3473 | /* SCO data packet */ | |
6039aa73 | 3474 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3475 | { |
3476 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3477 | struct hci_conn *conn; | |
3478 | __u16 handle; | |
3479 | ||
3480 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3481 | ||
3482 | handle = __le16_to_cpu(hdr->handle); | |
3483 | ||
f0e09510 | 3484 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3485 | |
3486 | hdev->stat.sco_rx++; | |
3487 | ||
3488 | hci_dev_lock(hdev); | |
3489 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3490 | hci_dev_unlock(hdev); | |
3491 | ||
3492 | if (conn) { | |
1da177e4 | 3493 | /* Send to upper protocol */ |
686ebf28 UF |
3494 | sco_recv_scodata(conn, skb); |
3495 | return; | |
1da177e4 | 3496 | } else { |
8e87d142 | 3497 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3498 | hdev->name, handle); |
1da177e4 LT |
3499 | } |
3500 | ||
3501 | kfree_skb(skb); | |
3502 | } | |
3503 | ||
9238f36a JH |
3504 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3505 | { | |
3506 | struct sk_buff *skb; | |
3507 | ||
3508 | skb = skb_peek(&hdev->cmd_q); | |
3509 | if (!skb) | |
3510 | return true; | |
3511 | ||
3512 | return bt_cb(skb)->req.start; | |
3513 | } | |
3514 | ||
42c6b129 JH |
3515 | static void hci_resend_last(struct hci_dev *hdev) |
3516 | { | |
3517 | struct hci_command_hdr *sent; | |
3518 | struct sk_buff *skb; | |
3519 | u16 opcode; | |
3520 | ||
3521 | if (!hdev->sent_cmd) | |
3522 | return; | |
3523 | ||
3524 | sent = (void *) hdev->sent_cmd->data; | |
3525 | opcode = __le16_to_cpu(sent->opcode); | |
3526 | if (opcode == HCI_OP_RESET) | |
3527 | return; | |
3528 | ||
3529 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3530 | if (!skb) | |
3531 | return; | |
3532 | ||
3533 | skb_queue_head(&hdev->cmd_q, skb); | |
3534 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3535 | } | |
3536 | ||
9238f36a JH |
3537 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3538 | { | |
3539 | hci_req_complete_t req_complete = NULL; | |
3540 | struct sk_buff *skb; | |
3541 | unsigned long flags; | |
3542 | ||
3543 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3544 | ||
42c6b129 JH |
3545 | /* If the completed command doesn't match the last one that was |
3546 | * sent we need to do special handling of it. | |
9238f36a | 3547 | */ |
42c6b129 JH |
3548 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3549 | /* Some CSR based controllers generate a spontaneous | |
3550 | * reset complete event during init and any pending | |
3551 | * command will never be completed. In such a case we | |
3552 | * need to resend whatever was the last sent | |
3553 | * command. | |
3554 | */ | |
3555 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3556 | hci_resend_last(hdev); | |
3557 | ||
9238f36a | 3558 | return; |
42c6b129 | 3559 | } |
9238f36a JH |
3560 | |
3561 | /* If the command succeeded and there's still more commands in | |
3562 | * this request the request is not yet complete. | |
3563 | */ | |
3564 | if (!status && !hci_req_is_complete(hdev)) | |
3565 | return; | |
3566 | ||
3567 | /* If this was the last command in a request the complete | |
3568 | * callback would be found in hdev->sent_cmd instead of the | |
3569 | * command queue (hdev->cmd_q). | |
3570 | */ | |
3571 | if (hdev->sent_cmd) { | |
3572 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
3573 | |
3574 | if (req_complete) { | |
3575 | /* We must set the complete callback to NULL to | |
3576 | * avoid calling the callback more than once if | |
3577 | * this function gets called again. | |
3578 | */ | |
3579 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
3580 | ||
9238f36a | 3581 | goto call_complete; |
53e21fbc | 3582 | } |
9238f36a JH |
3583 | } |
3584 | ||
3585 | /* Remove all pending commands belonging to this request */ | |
3586 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3587 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3588 | if (bt_cb(skb)->req.start) { | |
3589 | __skb_queue_head(&hdev->cmd_q, skb); | |
3590 | break; | |
3591 | } | |
3592 | ||
3593 | req_complete = bt_cb(skb)->req.complete; | |
3594 | kfree_skb(skb); | |
3595 | } | |
3596 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3597 | ||
3598 | call_complete: | |
3599 | if (req_complete) | |
3600 | req_complete(hdev, status); | |
3601 | } | |
3602 | ||
b78752cc | 3603 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3604 | { |
b78752cc | 3605 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3606 | struct sk_buff *skb; |
3607 | ||
3608 | BT_DBG("%s", hdev->name); | |
3609 | ||
1da177e4 | 3610 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3611 | /* Send copy to monitor */ |
3612 | hci_send_to_monitor(hdev, skb); | |
3613 | ||
1da177e4 LT |
3614 | if (atomic_read(&hdev->promisc)) { |
3615 | /* Send copy to the sockets */ | |
470fe1b5 | 3616 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3617 | } |
3618 | ||
0736cfa8 MH |
3619 | if (test_bit(HCI_RAW, &hdev->flags) || |
3620 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
3621 | kfree_skb(skb); |
3622 | continue; | |
3623 | } | |
3624 | ||
3625 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3626 | /* Don't process data packets in this states. */ | |
0d48d939 | 3627 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3628 | case HCI_ACLDATA_PKT: |
3629 | case HCI_SCODATA_PKT: | |
3630 | kfree_skb(skb); | |
3631 | continue; | |
3ff50b79 | 3632 | } |
1da177e4 LT |
3633 | } |
3634 | ||
3635 | /* Process frame */ | |
0d48d939 | 3636 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3637 | case HCI_EVENT_PKT: |
b78752cc | 3638 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3639 | hci_event_packet(hdev, skb); |
3640 | break; | |
3641 | ||
3642 | case HCI_ACLDATA_PKT: | |
3643 | BT_DBG("%s ACL data packet", hdev->name); | |
3644 | hci_acldata_packet(hdev, skb); | |
3645 | break; | |
3646 | ||
3647 | case HCI_SCODATA_PKT: | |
3648 | BT_DBG("%s SCO data packet", hdev->name); | |
3649 | hci_scodata_packet(hdev, skb); | |
3650 | break; | |
3651 | ||
3652 | default: | |
3653 | kfree_skb(skb); | |
3654 | break; | |
3655 | } | |
3656 | } | |
1da177e4 LT |
3657 | } |
3658 | ||
c347b765 | 3659 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3660 | { |
c347b765 | 3661 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3662 | struct sk_buff *skb; |
3663 | ||
2104786b AE |
3664 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3665 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3666 | |
1da177e4 | 3667 | /* Send queued commands */ |
5a08ecce AE |
3668 | if (atomic_read(&hdev->cmd_cnt)) { |
3669 | skb = skb_dequeue(&hdev->cmd_q); | |
3670 | if (!skb) | |
3671 | return; | |
3672 | ||
7585b97a | 3673 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3674 | |
a675d7f1 | 3675 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 3676 | if (hdev->sent_cmd) { |
1da177e4 | 3677 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 3678 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
3679 | if (test_bit(HCI_RESET, &hdev->flags)) |
3680 | del_timer(&hdev->cmd_timer); | |
3681 | else | |
3682 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3683 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3684 | } else { |
3685 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3686 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3687 | } |
3688 | } | |
3689 | } | |
2519a1fc | 3690 | |
31f7956c AG |
3691 | u8 bdaddr_to_le(u8 bdaddr_type) |
3692 | { | |
3693 | switch (bdaddr_type) { | |
3694 | case BDADDR_LE_PUBLIC: | |
3695 | return ADDR_LE_DEV_PUBLIC; | |
3696 | ||
3697 | default: | |
3698 | /* Fallback to LE Random address type */ | |
3699 | return ADDR_LE_DEV_RANDOM; | |
3700 | } | |
3701 | } |