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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
82453021 | 28 | #include <linux/jiffies.h> |
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/kmod.h> | |
31 | ||
32 | #include <linux/types.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/kernel.h> | |
1da177e4 LT |
35 | #include <linux/sched.h> |
36 | #include <linux/slab.h> | |
37 | #include <linux/poll.h> | |
38 | #include <linux/fcntl.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/skbuff.h> | |
f48fd9c8 | 41 | #include <linux/workqueue.h> |
1da177e4 LT |
42 | #include <linux/interrupt.h> |
43 | #include <linux/notifier.h> | |
611b30f7 | 44 | #include <linux/rfkill.h> |
6bd32326 | 45 | #include <linux/timer.h> |
3a0259bb | 46 | #include <linux/crypto.h> |
1da177e4 LT |
47 | #include <net/sock.h> |
48 | ||
49 | #include <asm/system.h> | |
70f23020 | 50 | #include <linux/uaccess.h> |
1da177e4 LT |
51 | #include <asm/unaligned.h> |
52 | ||
53 | #include <net/bluetooth/bluetooth.h> | |
54 | #include <net/bluetooth/hci_core.h> | |
55 | ||
ab81cbf9 JH |
56 | #define AUTO_OFF_TIMEOUT 2000 |
57 | ||
7784d78f AE |
58 | int enable_hs; |
59 | ||
b78752cc | 60 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 61 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 62 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 63 | |
1da177e4 LT |
64 | /* HCI device list */ |
65 | LIST_HEAD(hci_dev_list); | |
66 | DEFINE_RWLOCK(hci_dev_list_lock); | |
67 | ||
68 | /* HCI callback list */ | |
69 | LIST_HEAD(hci_cb_list); | |
70 | DEFINE_RWLOCK(hci_cb_list_lock); | |
71 | ||
1da177e4 | 72 | /* HCI notifiers list */ |
e041c683 | 73 | static ATOMIC_NOTIFIER_HEAD(hci_notifier); |
1da177e4 LT |
74 | |
75 | /* ---- HCI notifications ---- */ | |
76 | ||
77 | int hci_register_notifier(struct notifier_block *nb) | |
78 | { | |
e041c683 | 79 | return atomic_notifier_chain_register(&hci_notifier, nb); |
1da177e4 LT |
80 | } |
81 | ||
82 | int hci_unregister_notifier(struct notifier_block *nb) | |
83 | { | |
e041c683 | 84 | return atomic_notifier_chain_unregister(&hci_notifier, nb); |
1da177e4 LT |
85 | } |
86 | ||
6516455d | 87 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 88 | { |
e041c683 | 89 | atomic_notifier_call_chain(&hci_notifier, event, hdev); |
1da177e4 LT |
90 | } |
91 | ||
92 | /* ---- HCI requests ---- */ | |
93 | ||
23bb5763 | 94 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
1da177e4 | 95 | { |
23bb5763 JH |
96 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
97 | ||
a5040efa JH |
98 | /* If this is the init phase check if the completed command matches |
99 | * the last init command, and if not just return. | |
100 | */ | |
101 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) | |
23bb5763 | 102 | return; |
1da177e4 LT |
103 | |
104 | if (hdev->req_status == HCI_REQ_PEND) { | |
105 | hdev->req_result = result; | |
106 | hdev->req_status = HCI_REQ_DONE; | |
107 | wake_up_interruptible(&hdev->req_wait_q); | |
108 | } | |
109 | } | |
110 | ||
111 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
112 | { | |
113 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
114 | ||
115 | if (hdev->req_status == HCI_REQ_PEND) { | |
116 | hdev->req_result = err; | |
117 | hdev->req_status = HCI_REQ_CANCELED; | |
118 | wake_up_interruptible(&hdev->req_wait_q); | |
119 | } | |
120 | } | |
121 | ||
122 | /* Execute request and wait for completion. */ | |
8e87d142 | 123 | static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
01df8c31 | 124 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
125 | { |
126 | DECLARE_WAITQUEUE(wait, current); | |
127 | int err = 0; | |
128 | ||
129 | BT_DBG("%s start", hdev->name); | |
130 | ||
131 | hdev->req_status = HCI_REQ_PEND; | |
132 | ||
133 | add_wait_queue(&hdev->req_wait_q, &wait); | |
134 | set_current_state(TASK_INTERRUPTIBLE); | |
135 | ||
136 | req(hdev, opt); | |
137 | schedule_timeout(timeout); | |
138 | ||
139 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
140 | ||
141 | if (signal_pending(current)) | |
142 | return -EINTR; | |
143 | ||
144 | switch (hdev->req_status) { | |
145 | case HCI_REQ_DONE: | |
e175072f | 146 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
147 | break; |
148 | ||
149 | case HCI_REQ_CANCELED: | |
150 | err = -hdev->req_result; | |
151 | break; | |
152 | ||
153 | default: | |
154 | err = -ETIMEDOUT; | |
155 | break; | |
3ff50b79 | 156 | } |
1da177e4 | 157 | |
a5040efa | 158 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
159 | |
160 | BT_DBG("%s end: err %d", hdev->name, err); | |
161 | ||
162 | return err; | |
163 | } | |
164 | ||
165 | static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), | |
01df8c31 | 166 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
167 | { |
168 | int ret; | |
169 | ||
7c6a329e MH |
170 | if (!test_bit(HCI_UP, &hdev->flags)) |
171 | return -ENETDOWN; | |
172 | ||
1da177e4 LT |
173 | /* Serialize all requests */ |
174 | hci_req_lock(hdev); | |
175 | ret = __hci_request(hdev, req, opt, timeout); | |
176 | hci_req_unlock(hdev); | |
177 | ||
178 | return ret; | |
179 | } | |
180 | ||
181 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
182 | { | |
183 | BT_DBG("%s %ld", hdev->name, opt); | |
184 | ||
185 | /* Reset device */ | |
f630cf0d | 186 | set_bit(HCI_RESET, &hdev->flags); |
a9de9248 | 187 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
188 | } |
189 | ||
e61ef499 | 190 | static void bredr_init(struct hci_dev *hdev) |
1da177e4 | 191 | { |
b0916ea0 | 192 | struct hci_cp_delete_stored_link_key cp; |
1ebb9252 | 193 | __le16 param; |
89f2783d | 194 | __u8 flt_type; |
1da177e4 | 195 | |
2455a3ea AE |
196 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
197 | ||
1da177e4 LT |
198 | /* Mandatory initialization */ |
199 | ||
200 | /* Reset */ | |
f630cf0d | 201 | if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) { |
e61ef499 AE |
202 | set_bit(HCI_RESET, &hdev->flags); |
203 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
f630cf0d | 204 | } |
1da177e4 LT |
205 | |
206 | /* Read Local Supported Features */ | |
a9de9248 | 207 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 208 | |
1143e5a6 | 209 | /* Read Local Version */ |
a9de9248 | 210 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1143e5a6 | 211 | |
1da177e4 | 212 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
a9de9248 | 213 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
1da177e4 | 214 | |
1da177e4 | 215 | /* Read BD Address */ |
a9de9248 MH |
216 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
217 | ||
218 | /* Read Class of Device */ | |
219 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); | |
220 | ||
221 | /* Read Local Name */ | |
222 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); | |
1da177e4 LT |
223 | |
224 | /* Read Voice Setting */ | |
a9de9248 | 225 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
1da177e4 LT |
226 | |
227 | /* Optional initialization */ | |
228 | ||
229 | /* Clear Event Filters */ | |
89f2783d | 230 | flt_type = HCI_FLT_CLEAR_ALL; |
a9de9248 | 231 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
1da177e4 | 232 | |
1da177e4 | 233 | /* Connection accept timeout ~20 secs */ |
aca3192c | 234 | param = cpu_to_le16(0x7d00); |
a9de9248 | 235 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
b0916ea0 JH |
236 | |
237 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
238 | cp.delete_all = 1; | |
239 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); | |
1da177e4 LT |
240 | } |
241 | ||
e61ef499 AE |
242 | static void amp_init(struct hci_dev *hdev) |
243 | { | |
2455a3ea AE |
244 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
245 | ||
e61ef499 AE |
246 | /* Reset */ |
247 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
248 | ||
249 | /* Read Local Version */ | |
250 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
251 | } | |
252 | ||
253 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
254 | { | |
255 | struct sk_buff *skb; | |
256 | ||
257 | BT_DBG("%s %ld", hdev->name, opt); | |
258 | ||
259 | /* Driver initialization */ | |
260 | ||
261 | /* Special commands */ | |
262 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
263 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
264 | skb->dev = (void *) hdev; | |
265 | ||
266 | skb_queue_tail(&hdev->cmd_q, skb); | |
267 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
268 | } | |
269 | skb_queue_purge(&hdev->driver_init); | |
270 | ||
271 | switch (hdev->dev_type) { | |
272 | case HCI_BREDR: | |
273 | bredr_init(hdev); | |
274 | break; | |
275 | ||
276 | case HCI_AMP: | |
277 | amp_init(hdev); | |
278 | break; | |
279 | ||
280 | default: | |
281 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
282 | break; | |
283 | } | |
284 | ||
285 | } | |
286 | ||
6ed58ec5 VT |
287 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
288 | { | |
289 | BT_DBG("%s", hdev->name); | |
290 | ||
291 | /* Read LE buffer size */ | |
292 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); | |
293 | } | |
294 | ||
1da177e4 LT |
295 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
296 | { | |
297 | __u8 scan = opt; | |
298 | ||
299 | BT_DBG("%s %x", hdev->name, scan); | |
300 | ||
301 | /* Inquiry and Page scans */ | |
a9de9248 | 302 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
303 | } |
304 | ||
305 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
306 | { | |
307 | __u8 auth = opt; | |
308 | ||
309 | BT_DBG("%s %x", hdev->name, auth); | |
310 | ||
311 | /* Authentication */ | |
a9de9248 | 312 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
313 | } |
314 | ||
315 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
316 | { | |
317 | __u8 encrypt = opt; | |
318 | ||
319 | BT_DBG("%s %x", hdev->name, encrypt); | |
320 | ||
e4e8e37c | 321 | /* Encryption */ |
a9de9248 | 322 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
323 | } |
324 | ||
e4e8e37c MH |
325 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
326 | { | |
327 | __le16 policy = cpu_to_le16(opt); | |
328 | ||
a418b893 | 329 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
330 | |
331 | /* Default link policy */ | |
332 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
333 | } | |
334 | ||
8e87d142 | 335 | /* Get HCI device by index. |
1da177e4 LT |
336 | * Device is held on return. */ |
337 | struct hci_dev *hci_dev_get(int index) | |
338 | { | |
8035ded4 | 339 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
340 | |
341 | BT_DBG("%d", index); | |
342 | ||
343 | if (index < 0) | |
344 | return NULL; | |
345 | ||
346 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 347 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
348 | if (d->id == index) { |
349 | hdev = hci_dev_hold(d); | |
350 | break; | |
351 | } | |
352 | } | |
353 | read_unlock(&hci_dev_list_lock); | |
354 | return hdev; | |
355 | } | |
1da177e4 LT |
356 | |
357 | /* ---- Inquiry support ---- */ | |
358 | static void inquiry_cache_flush(struct hci_dev *hdev) | |
359 | { | |
30883512 | 360 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 361 | struct inquiry_entry *p, *n; |
1da177e4 | 362 | |
561aafbc JH |
363 | list_for_each_entry_safe(p, n, &cache->all, all) { |
364 | list_del(&p->all); | |
b57c1a56 | 365 | kfree(p); |
1da177e4 | 366 | } |
561aafbc JH |
367 | |
368 | INIT_LIST_HEAD(&cache->unknown); | |
369 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
370 | } |
371 | ||
372 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
373 | { | |
30883512 | 374 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
375 | struct inquiry_entry *e; |
376 | ||
377 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
378 | ||
561aafbc JH |
379 | list_for_each_entry(e, &cache->all, all) { |
380 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
381 | return e; | |
382 | } | |
383 | ||
384 | return NULL; | |
385 | } | |
386 | ||
387 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
388 | bdaddr_t *bdaddr) | |
389 | { | |
30883512 | 390 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
391 | struct inquiry_entry *e; |
392 | ||
393 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
394 | ||
395 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 396 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
397 | return e; |
398 | } | |
399 | ||
400 | return NULL; | |
1da177e4 LT |
401 | } |
402 | ||
3175405b | 403 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
561aafbc | 404 | bool name_known) |
1da177e4 | 405 | { |
30883512 | 406 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 407 | struct inquiry_entry *ie; |
1da177e4 LT |
408 | |
409 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
410 | ||
70f23020 | 411 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
561aafbc JH |
412 | if (ie) |
413 | goto update; | |
414 | ||
415 | /* Entry not in the cache. Add new one. */ | |
416 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
417 | if (!ie) | |
3175405b | 418 | return false; |
561aafbc JH |
419 | |
420 | list_add(&ie->all, &cache->all); | |
421 | ||
422 | if (name_known) { | |
423 | ie->name_state = NAME_KNOWN; | |
424 | } else { | |
425 | ie->name_state = NAME_NOT_KNOWN; | |
426 | list_add(&ie->list, &cache->unknown); | |
427 | } | |
70f23020 | 428 | |
561aafbc JH |
429 | update: |
430 | if (name_known && ie->name_state != NAME_KNOWN && | |
431 | ie->name_state != NAME_PENDING) { | |
432 | ie->name_state = NAME_KNOWN; | |
433 | list_del(&ie->list); | |
1da177e4 LT |
434 | } |
435 | ||
70f23020 AE |
436 | memcpy(&ie->data, data, sizeof(*data)); |
437 | ie->timestamp = jiffies; | |
1da177e4 | 438 | cache->timestamp = jiffies; |
3175405b JH |
439 | |
440 | if (ie->name_state == NAME_NOT_KNOWN) | |
441 | return false; | |
442 | ||
443 | return true; | |
1da177e4 LT |
444 | } |
445 | ||
446 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
447 | { | |
30883512 | 448 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
449 | struct inquiry_info *info = (struct inquiry_info *) buf; |
450 | struct inquiry_entry *e; | |
451 | int copied = 0; | |
452 | ||
561aafbc | 453 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 454 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
455 | |
456 | if (copied >= num) | |
457 | break; | |
458 | ||
1da177e4 LT |
459 | bacpy(&info->bdaddr, &data->bdaddr); |
460 | info->pscan_rep_mode = data->pscan_rep_mode; | |
461 | info->pscan_period_mode = data->pscan_period_mode; | |
462 | info->pscan_mode = data->pscan_mode; | |
463 | memcpy(info->dev_class, data->dev_class, 3); | |
464 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 465 | |
1da177e4 | 466 | info++; |
b57c1a56 | 467 | copied++; |
1da177e4 LT |
468 | } |
469 | ||
470 | BT_DBG("cache %p, copied %d", cache, copied); | |
471 | return copied; | |
472 | } | |
473 | ||
474 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
475 | { | |
476 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
477 | struct hci_cp_inquiry cp; | |
478 | ||
479 | BT_DBG("%s", hdev->name); | |
480 | ||
481 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
482 | return; | |
483 | ||
484 | /* Start Inquiry */ | |
485 | memcpy(&cp.lap, &ir->lap, 3); | |
486 | cp.length = ir->length; | |
487 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 488 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
489 | } |
490 | ||
491 | int hci_inquiry(void __user *arg) | |
492 | { | |
493 | __u8 __user *ptr = arg; | |
494 | struct hci_inquiry_req ir; | |
495 | struct hci_dev *hdev; | |
496 | int err = 0, do_inquiry = 0, max_rsp; | |
497 | long timeo; | |
498 | __u8 *buf; | |
499 | ||
500 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
501 | return -EFAULT; | |
502 | ||
5a08ecce AE |
503 | hdev = hci_dev_get(ir.dev_id); |
504 | if (!hdev) | |
1da177e4 LT |
505 | return -ENODEV; |
506 | ||
09fd0de5 | 507 | hci_dev_lock(hdev); |
8e87d142 | 508 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
70f23020 AE |
509 | inquiry_cache_empty(hdev) || |
510 | ir.flags & IREQ_CACHE_FLUSH) { | |
1da177e4 LT |
511 | inquiry_cache_flush(hdev); |
512 | do_inquiry = 1; | |
513 | } | |
09fd0de5 | 514 | hci_dev_unlock(hdev); |
1da177e4 | 515 | |
04837f64 | 516 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
517 | |
518 | if (do_inquiry) { | |
519 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
520 | if (err < 0) | |
521 | goto done; | |
522 | } | |
1da177e4 LT |
523 | |
524 | /* for unlimited number of responses we will use buffer with 255 entries */ | |
525 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; | |
526 | ||
527 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
528 | * copy it to the user space. | |
529 | */ | |
01df8c31 | 530 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 531 | if (!buf) { |
1da177e4 LT |
532 | err = -ENOMEM; |
533 | goto done; | |
534 | } | |
535 | ||
09fd0de5 | 536 | hci_dev_lock(hdev); |
1da177e4 | 537 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 538 | hci_dev_unlock(hdev); |
1da177e4 LT |
539 | |
540 | BT_DBG("num_rsp %d", ir.num_rsp); | |
541 | ||
542 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
543 | ptr += sizeof(ir); | |
544 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
545 | ir.num_rsp)) | |
546 | err = -EFAULT; | |
8e87d142 | 547 | } else |
1da177e4 LT |
548 | err = -EFAULT; |
549 | ||
550 | kfree(buf); | |
551 | ||
552 | done: | |
553 | hci_dev_put(hdev); | |
554 | return err; | |
555 | } | |
556 | ||
557 | /* ---- HCI ioctl helpers ---- */ | |
558 | ||
559 | int hci_dev_open(__u16 dev) | |
560 | { | |
561 | struct hci_dev *hdev; | |
562 | int ret = 0; | |
563 | ||
5a08ecce AE |
564 | hdev = hci_dev_get(dev); |
565 | if (!hdev) | |
1da177e4 LT |
566 | return -ENODEV; |
567 | ||
568 | BT_DBG("%s %p", hdev->name, hdev); | |
569 | ||
570 | hci_req_lock(hdev); | |
571 | ||
611b30f7 MH |
572 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
573 | ret = -ERFKILL; | |
574 | goto done; | |
575 | } | |
576 | ||
1da177e4 LT |
577 | if (test_bit(HCI_UP, &hdev->flags)) { |
578 | ret = -EALREADY; | |
579 | goto done; | |
580 | } | |
581 | ||
582 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
583 | set_bit(HCI_RAW, &hdev->flags); | |
584 | ||
07e3b94a AE |
585 | /* Treat all non BR/EDR controllers as raw devices if |
586 | enable_hs is not set */ | |
587 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
588 | set_bit(HCI_RAW, &hdev->flags); |
589 | ||
1da177e4 LT |
590 | if (hdev->open(hdev)) { |
591 | ret = -EIO; | |
592 | goto done; | |
593 | } | |
594 | ||
595 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
596 | atomic_set(&hdev->cmd_cnt, 1); | |
597 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 598 | hdev->init_last_cmd = 0; |
1da177e4 | 599 | |
04837f64 MH |
600 | ret = __hci_request(hdev, hci_init_req, 0, |
601 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 | 602 | |
eead27da | 603 | if (lmp_host_le_capable(hdev)) |
6ed58ec5 VT |
604 | ret = __hci_request(hdev, hci_le_init_req, 0, |
605 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
606 | ||
1da177e4 LT |
607 | clear_bit(HCI_INIT, &hdev->flags); |
608 | } | |
609 | ||
610 | if (!ret) { | |
611 | hci_dev_hold(hdev); | |
612 | set_bit(HCI_UP, &hdev->flags); | |
613 | hci_notify(hdev, HCI_DEV_UP); | |
56e5cb86 | 614 | if (!test_bit(HCI_SETUP, &hdev->flags)) { |
09fd0de5 | 615 | hci_dev_lock(hdev); |
744cf19e | 616 | mgmt_powered(hdev, 1); |
09fd0de5 | 617 | hci_dev_unlock(hdev); |
56e5cb86 | 618 | } |
8e87d142 | 619 | } else { |
1da177e4 | 620 | /* Init failed, cleanup */ |
3eff45ea | 621 | flush_work(&hdev->tx_work); |
c347b765 | 622 | flush_work(&hdev->cmd_work); |
b78752cc | 623 | flush_work(&hdev->rx_work); |
1da177e4 LT |
624 | |
625 | skb_queue_purge(&hdev->cmd_q); | |
626 | skb_queue_purge(&hdev->rx_q); | |
627 | ||
628 | if (hdev->flush) | |
629 | hdev->flush(hdev); | |
630 | ||
631 | if (hdev->sent_cmd) { | |
632 | kfree_skb(hdev->sent_cmd); | |
633 | hdev->sent_cmd = NULL; | |
634 | } | |
635 | ||
636 | hdev->close(hdev); | |
637 | hdev->flags = 0; | |
638 | } | |
639 | ||
640 | done: | |
641 | hci_req_unlock(hdev); | |
642 | hci_dev_put(hdev); | |
643 | return ret; | |
644 | } | |
645 | ||
646 | static int hci_dev_do_close(struct hci_dev *hdev) | |
647 | { | |
648 | BT_DBG("%s %p", hdev->name, hdev); | |
649 | ||
650 | hci_req_cancel(hdev, ENODEV); | |
651 | hci_req_lock(hdev); | |
652 | ||
653 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 654 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
655 | hci_req_unlock(hdev); |
656 | return 0; | |
657 | } | |
658 | ||
3eff45ea GP |
659 | /* Flush RX and TX works */ |
660 | flush_work(&hdev->tx_work); | |
b78752cc | 661 | flush_work(&hdev->rx_work); |
1da177e4 | 662 | |
16ab91ab | 663 | if (hdev->discov_timeout > 0) { |
e0f9309f | 664 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab JH |
665 | hdev->discov_timeout = 0; |
666 | } | |
667 | ||
3243553f | 668 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags)) |
e0f9309f | 669 | cancel_delayed_work(&hdev->power_off); |
3243553f | 670 | |
7d78525d JH |
671 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->flags)) |
672 | cancel_delayed_work(&hdev->service_cache); | |
673 | ||
09fd0de5 | 674 | hci_dev_lock(hdev); |
1da177e4 LT |
675 | inquiry_cache_flush(hdev); |
676 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 677 | hci_dev_unlock(hdev); |
1da177e4 LT |
678 | |
679 | hci_notify(hdev, HCI_DEV_DOWN); | |
680 | ||
681 | if (hdev->flush) | |
682 | hdev->flush(hdev); | |
683 | ||
684 | /* Reset device */ | |
685 | skb_queue_purge(&hdev->cmd_q); | |
686 | atomic_set(&hdev->cmd_cnt, 1); | |
687 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
688 | set_bit(HCI_INIT, &hdev->flags); | |
04837f64 | 689 | __hci_request(hdev, hci_reset_req, 0, |
cad44c2b | 690 | msecs_to_jiffies(250)); |
1da177e4 LT |
691 | clear_bit(HCI_INIT, &hdev->flags); |
692 | } | |
693 | ||
c347b765 GP |
694 | /* flush cmd work */ |
695 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
696 | |
697 | /* Drop queues */ | |
698 | skb_queue_purge(&hdev->rx_q); | |
699 | skb_queue_purge(&hdev->cmd_q); | |
700 | skb_queue_purge(&hdev->raw_q); | |
701 | ||
702 | /* Drop last sent command */ | |
703 | if (hdev->sent_cmd) { | |
b79f44c1 | 704 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
705 | kfree_skb(hdev->sent_cmd); |
706 | hdev->sent_cmd = NULL; | |
707 | } | |
708 | ||
709 | /* After this point our queues are empty | |
710 | * and no tasks are scheduled. */ | |
711 | hdev->close(hdev); | |
712 | ||
09fd0de5 | 713 | hci_dev_lock(hdev); |
744cf19e | 714 | mgmt_powered(hdev, 0); |
09fd0de5 | 715 | hci_dev_unlock(hdev); |
5add6af8 | 716 | |
1da177e4 LT |
717 | /* Clear flags */ |
718 | hdev->flags = 0; | |
719 | ||
720 | hci_req_unlock(hdev); | |
721 | ||
722 | hci_dev_put(hdev); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | int hci_dev_close(__u16 dev) | |
727 | { | |
728 | struct hci_dev *hdev; | |
729 | int err; | |
730 | ||
70f23020 AE |
731 | hdev = hci_dev_get(dev); |
732 | if (!hdev) | |
1da177e4 LT |
733 | return -ENODEV; |
734 | err = hci_dev_do_close(hdev); | |
735 | hci_dev_put(hdev); | |
736 | return err; | |
737 | } | |
738 | ||
739 | int hci_dev_reset(__u16 dev) | |
740 | { | |
741 | struct hci_dev *hdev; | |
742 | int ret = 0; | |
743 | ||
70f23020 AE |
744 | hdev = hci_dev_get(dev); |
745 | if (!hdev) | |
1da177e4 LT |
746 | return -ENODEV; |
747 | ||
748 | hci_req_lock(hdev); | |
1da177e4 LT |
749 | |
750 | if (!test_bit(HCI_UP, &hdev->flags)) | |
751 | goto done; | |
752 | ||
753 | /* Drop queues */ | |
754 | skb_queue_purge(&hdev->rx_q); | |
755 | skb_queue_purge(&hdev->cmd_q); | |
756 | ||
09fd0de5 | 757 | hci_dev_lock(hdev); |
1da177e4 LT |
758 | inquiry_cache_flush(hdev); |
759 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 760 | hci_dev_unlock(hdev); |
1da177e4 LT |
761 | |
762 | if (hdev->flush) | |
763 | hdev->flush(hdev); | |
764 | ||
8e87d142 | 765 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 766 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
767 | |
768 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
04837f64 MH |
769 | ret = __hci_request(hdev, hci_reset_req, 0, |
770 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
771 | |
772 | done: | |
1da177e4 LT |
773 | hci_req_unlock(hdev); |
774 | hci_dev_put(hdev); | |
775 | return ret; | |
776 | } | |
777 | ||
778 | int hci_dev_reset_stat(__u16 dev) | |
779 | { | |
780 | struct hci_dev *hdev; | |
781 | int ret = 0; | |
782 | ||
70f23020 AE |
783 | hdev = hci_dev_get(dev); |
784 | if (!hdev) | |
1da177e4 LT |
785 | return -ENODEV; |
786 | ||
787 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
788 | ||
789 | hci_dev_put(hdev); | |
790 | ||
791 | return ret; | |
792 | } | |
793 | ||
794 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
795 | { | |
796 | struct hci_dev *hdev; | |
797 | struct hci_dev_req dr; | |
798 | int err = 0; | |
799 | ||
800 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
801 | return -EFAULT; | |
802 | ||
70f23020 AE |
803 | hdev = hci_dev_get(dr.dev_id); |
804 | if (!hdev) | |
1da177e4 LT |
805 | return -ENODEV; |
806 | ||
807 | switch (cmd) { | |
808 | case HCISETAUTH: | |
04837f64 MH |
809 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
810 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
811 | break; |
812 | ||
813 | case HCISETENCRYPT: | |
814 | if (!lmp_encrypt_capable(hdev)) { | |
815 | err = -EOPNOTSUPP; | |
816 | break; | |
817 | } | |
818 | ||
819 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
820 | /* Auth must be enabled first */ | |
04837f64 MH |
821 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
822 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
823 | if (err) |
824 | break; | |
825 | } | |
826 | ||
04837f64 MH |
827 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
828 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
829 | break; |
830 | ||
831 | case HCISETSCAN: | |
04837f64 MH |
832 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
833 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
834 | break; |
835 | ||
1da177e4 | 836 | case HCISETLINKPOL: |
e4e8e37c MH |
837 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
838 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
839 | break; |
840 | ||
841 | case HCISETLINKMODE: | |
e4e8e37c MH |
842 | hdev->link_mode = ((__u16) dr.dev_opt) & |
843 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
844 | break; | |
845 | ||
846 | case HCISETPTYPE: | |
847 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
848 | break; |
849 | ||
850 | case HCISETACLMTU: | |
e4e8e37c MH |
851 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
852 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
853 | break; |
854 | ||
855 | case HCISETSCOMTU: | |
e4e8e37c MH |
856 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
857 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
858 | break; |
859 | ||
860 | default: | |
861 | err = -EINVAL; | |
862 | break; | |
863 | } | |
e4e8e37c | 864 | |
1da177e4 LT |
865 | hci_dev_put(hdev); |
866 | return err; | |
867 | } | |
868 | ||
869 | int hci_get_dev_list(void __user *arg) | |
870 | { | |
8035ded4 | 871 | struct hci_dev *hdev; |
1da177e4 LT |
872 | struct hci_dev_list_req *dl; |
873 | struct hci_dev_req *dr; | |
1da177e4 LT |
874 | int n = 0, size, err; |
875 | __u16 dev_num; | |
876 | ||
877 | if (get_user(dev_num, (__u16 __user *) arg)) | |
878 | return -EFAULT; | |
879 | ||
880 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
881 | return -EINVAL; | |
882 | ||
883 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
884 | ||
70f23020 AE |
885 | dl = kzalloc(size, GFP_KERNEL); |
886 | if (!dl) | |
1da177e4 LT |
887 | return -ENOMEM; |
888 | ||
889 | dr = dl->dev_req; | |
890 | ||
f20d09d5 | 891 | read_lock(&hci_dev_list_lock); |
8035ded4 | 892 | list_for_each_entry(hdev, &hci_dev_list, list) { |
3243553f | 893 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags)) |
e0f9309f | 894 | cancel_delayed_work(&hdev->power_off); |
c542a06c JH |
895 | |
896 | if (!test_bit(HCI_MGMT, &hdev->flags)) | |
897 | set_bit(HCI_PAIRABLE, &hdev->flags); | |
898 | ||
1da177e4 LT |
899 | (dr + n)->dev_id = hdev->id; |
900 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 901 | |
1da177e4 LT |
902 | if (++n >= dev_num) |
903 | break; | |
904 | } | |
f20d09d5 | 905 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
906 | |
907 | dl->dev_num = n; | |
908 | size = sizeof(*dl) + n * sizeof(*dr); | |
909 | ||
910 | err = copy_to_user(arg, dl, size); | |
911 | kfree(dl); | |
912 | ||
913 | return err ? -EFAULT : 0; | |
914 | } | |
915 | ||
916 | int hci_get_dev_info(void __user *arg) | |
917 | { | |
918 | struct hci_dev *hdev; | |
919 | struct hci_dev_info di; | |
920 | int err = 0; | |
921 | ||
922 | if (copy_from_user(&di, arg, sizeof(di))) | |
923 | return -EFAULT; | |
924 | ||
70f23020 AE |
925 | hdev = hci_dev_get(di.dev_id); |
926 | if (!hdev) | |
1da177e4 LT |
927 | return -ENODEV; |
928 | ||
3243553f JH |
929 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->flags)) |
930 | cancel_delayed_work_sync(&hdev->power_off); | |
ab81cbf9 | 931 | |
c542a06c JH |
932 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
933 | set_bit(HCI_PAIRABLE, &hdev->flags); | |
934 | ||
1da177e4 LT |
935 | strcpy(di.name, hdev->name); |
936 | di.bdaddr = hdev->bdaddr; | |
943da25d | 937 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
938 | di.flags = hdev->flags; |
939 | di.pkt_type = hdev->pkt_type; | |
940 | di.acl_mtu = hdev->acl_mtu; | |
941 | di.acl_pkts = hdev->acl_pkts; | |
942 | di.sco_mtu = hdev->sco_mtu; | |
943 | di.sco_pkts = hdev->sco_pkts; | |
944 | di.link_policy = hdev->link_policy; | |
945 | di.link_mode = hdev->link_mode; | |
946 | ||
947 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
948 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
949 | ||
950 | if (copy_to_user(arg, &di, sizeof(di))) | |
951 | err = -EFAULT; | |
952 | ||
953 | hci_dev_put(hdev); | |
954 | ||
955 | return err; | |
956 | } | |
957 | ||
958 | /* ---- Interface to HCI drivers ---- */ | |
959 | ||
611b30f7 MH |
960 | static int hci_rfkill_set_block(void *data, bool blocked) |
961 | { | |
962 | struct hci_dev *hdev = data; | |
963 | ||
964 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
965 | ||
966 | if (!blocked) | |
967 | return 0; | |
968 | ||
969 | hci_dev_do_close(hdev); | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
974 | static const struct rfkill_ops hci_rfkill_ops = { | |
975 | .set_block = hci_rfkill_set_block, | |
976 | }; | |
977 | ||
1da177e4 LT |
978 | /* Alloc HCI device */ |
979 | struct hci_dev *hci_alloc_dev(void) | |
980 | { | |
981 | struct hci_dev *hdev; | |
982 | ||
25ea6db0 | 983 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
1da177e4 LT |
984 | if (!hdev) |
985 | return NULL; | |
986 | ||
0ac7e700 | 987 | hci_init_sysfs(hdev); |
1da177e4 LT |
988 | skb_queue_head_init(&hdev->driver_init); |
989 | ||
990 | return hdev; | |
991 | } | |
992 | EXPORT_SYMBOL(hci_alloc_dev); | |
993 | ||
994 | /* Free HCI device */ | |
995 | void hci_free_dev(struct hci_dev *hdev) | |
996 | { | |
997 | skb_queue_purge(&hdev->driver_init); | |
998 | ||
a91f2e39 MH |
999 | /* will free via device release */ |
1000 | put_device(&hdev->dev); | |
1da177e4 LT |
1001 | } |
1002 | EXPORT_SYMBOL(hci_free_dev); | |
1003 | ||
ab81cbf9 JH |
1004 | static void hci_power_on(struct work_struct *work) |
1005 | { | |
1006 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1007 | ||
1008 | BT_DBG("%s", hdev->name); | |
1009 | ||
1010 | if (hci_dev_open(hdev->id) < 0) | |
1011 | return; | |
1012 | ||
1013 | if (test_bit(HCI_AUTO_OFF, &hdev->flags)) | |
80b7ab33 | 1014 | schedule_delayed_work(&hdev->power_off, |
3243553f | 1015 | msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
ab81cbf9 JH |
1016 | |
1017 | if (test_and_clear_bit(HCI_SETUP, &hdev->flags)) | |
744cf19e | 1018 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1019 | } |
1020 | ||
1021 | static void hci_power_off(struct work_struct *work) | |
1022 | { | |
3243553f JH |
1023 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1024 | power_off.work); | |
ab81cbf9 JH |
1025 | |
1026 | BT_DBG("%s", hdev->name); | |
1027 | ||
1028 | clear_bit(HCI_AUTO_OFF, &hdev->flags); | |
1029 | ||
3243553f | 1030 | hci_dev_close(hdev->id); |
ab81cbf9 JH |
1031 | } |
1032 | ||
16ab91ab JH |
1033 | static void hci_discov_off(struct work_struct *work) |
1034 | { | |
1035 | struct hci_dev *hdev; | |
1036 | u8 scan = SCAN_PAGE; | |
1037 | ||
1038 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1039 | ||
1040 | BT_DBG("%s", hdev->name); | |
1041 | ||
09fd0de5 | 1042 | hci_dev_lock(hdev); |
16ab91ab JH |
1043 | |
1044 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1045 | ||
1046 | hdev->discov_timeout = 0; | |
1047 | ||
09fd0de5 | 1048 | hci_dev_unlock(hdev); |
16ab91ab JH |
1049 | } |
1050 | ||
2aeb9a1a JH |
1051 | int hci_uuids_clear(struct hci_dev *hdev) |
1052 | { | |
1053 | struct list_head *p, *n; | |
1054 | ||
1055 | list_for_each_safe(p, n, &hdev->uuids) { | |
1056 | struct bt_uuid *uuid; | |
1057 | ||
1058 | uuid = list_entry(p, struct bt_uuid, list); | |
1059 | ||
1060 | list_del(p); | |
1061 | kfree(uuid); | |
1062 | } | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
55ed8ca1 JH |
1067 | int hci_link_keys_clear(struct hci_dev *hdev) |
1068 | { | |
1069 | struct list_head *p, *n; | |
1070 | ||
1071 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1072 | struct link_key *key; | |
1073 | ||
1074 | key = list_entry(p, struct link_key, list); | |
1075 | ||
1076 | list_del(p); | |
1077 | kfree(key); | |
1078 | } | |
1079 | ||
1080 | return 0; | |
1081 | } | |
1082 | ||
1083 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1084 | { | |
8035ded4 | 1085 | struct link_key *k; |
55ed8ca1 | 1086 | |
8035ded4 | 1087 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1088 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1089 | return k; | |
55ed8ca1 JH |
1090 | |
1091 | return NULL; | |
1092 | } | |
1093 | ||
d25e28ab JH |
1094 | static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
1095 | u8 key_type, u8 old_key_type) | |
1096 | { | |
1097 | /* Legacy key */ | |
1098 | if (key_type < 0x03) | |
1099 | return 1; | |
1100 | ||
1101 | /* Debug keys are insecure so don't store them persistently */ | |
1102 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
1103 | return 0; | |
1104 | ||
1105 | /* Changed combination key and there's no previous one */ | |
1106 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
1107 | return 0; | |
1108 | ||
1109 | /* Security mode 3 case */ | |
1110 | if (!conn) | |
1111 | return 1; | |
1112 | ||
1113 | /* Neither local nor remote side had no-bonding as requirement */ | |
1114 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
1115 | return 1; | |
1116 | ||
1117 | /* Local side had dedicated bonding as requirement */ | |
1118 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
1119 | return 1; | |
1120 | ||
1121 | /* Remote side had dedicated bonding as requirement */ | |
1122 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
1123 | return 1; | |
1124 | ||
1125 | /* If none of the above criteria match, then don't store the key | |
1126 | * persistently */ | |
1127 | return 0; | |
1128 | } | |
1129 | ||
75d262c2 VCG |
1130 | struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
1131 | { | |
1132 | struct link_key *k; | |
1133 | ||
1134 | list_for_each_entry(k, &hdev->link_keys, list) { | |
1135 | struct key_master_id *id; | |
1136 | ||
1137 | if (k->type != HCI_LK_SMP_LTK) | |
1138 | continue; | |
1139 | ||
1140 | if (k->dlen != sizeof(*id)) | |
1141 | continue; | |
1142 | ||
1143 | id = (void *) &k->data; | |
1144 | if (id->ediv == ediv && | |
1145 | (memcmp(rand, id->rand, sizeof(id->rand)) == 0)) | |
1146 | return k; | |
1147 | } | |
1148 | ||
1149 | return NULL; | |
1150 | } | |
1151 | EXPORT_SYMBOL(hci_find_ltk); | |
1152 | ||
1153 | struct link_key *hci_find_link_key_type(struct hci_dev *hdev, | |
1154 | bdaddr_t *bdaddr, u8 type) | |
1155 | { | |
1156 | struct link_key *k; | |
1157 | ||
1158 | list_for_each_entry(k, &hdev->link_keys, list) | |
1159 | if (k->type == type && bacmp(bdaddr, &k->bdaddr) == 0) | |
1160 | return k; | |
1161 | ||
1162 | return NULL; | |
1163 | } | |
1164 | EXPORT_SYMBOL(hci_find_link_key_type); | |
1165 | ||
d25e28ab JH |
1166 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
1167 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) | |
55ed8ca1 JH |
1168 | { |
1169 | struct link_key *key, *old_key; | |
4df378a1 | 1170 | u8 old_key_type, persistent; |
55ed8ca1 JH |
1171 | |
1172 | old_key = hci_find_link_key(hdev, bdaddr); | |
1173 | if (old_key) { | |
1174 | old_key_type = old_key->type; | |
1175 | key = old_key; | |
1176 | } else { | |
12adcf3a | 1177 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1178 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1179 | if (!key) | |
1180 | return -ENOMEM; | |
1181 | list_add(&key->list, &hdev->link_keys); | |
1182 | } | |
1183 | ||
1184 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); | |
1185 | ||
d25e28ab JH |
1186 | /* Some buggy controller combinations generate a changed |
1187 | * combination key for legacy pairing even when there's no | |
1188 | * previous key */ | |
1189 | if (type == HCI_LK_CHANGED_COMBINATION && | |
1190 | (!conn || conn->remote_auth == 0xff) && | |
655fe6ec | 1191 | old_key_type == 0xff) { |
d25e28ab | 1192 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1193 | if (conn) |
1194 | conn->key_type = type; | |
1195 | } | |
d25e28ab | 1196 | |
55ed8ca1 JH |
1197 | bacpy(&key->bdaddr, bdaddr); |
1198 | memcpy(key->val, val, 16); | |
55ed8ca1 JH |
1199 | key->pin_len = pin_len; |
1200 | ||
b6020ba0 | 1201 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1202 | key->type = old_key_type; |
4748fed2 JH |
1203 | else |
1204 | key->type = type; | |
1205 | ||
4df378a1 JH |
1206 | if (!new_key) |
1207 | return 0; | |
1208 | ||
1209 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1210 | ||
744cf19e | 1211 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 JH |
1212 | |
1213 | if (!persistent) { | |
1214 | list_del(&key->list); | |
1215 | kfree(key); | |
1216 | } | |
55ed8ca1 JH |
1217 | |
1218 | return 0; | |
1219 | } | |
1220 | ||
75d262c2 | 1221 | int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr, |
726b4ffc | 1222 | u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]) |
75d262c2 VCG |
1223 | { |
1224 | struct link_key *key, *old_key; | |
1225 | struct key_master_id *id; | |
1226 | u8 old_key_type; | |
1227 | ||
1228 | BT_DBG("%s addr %s", hdev->name, batostr(bdaddr)); | |
1229 | ||
1230 | old_key = hci_find_link_key_type(hdev, bdaddr, HCI_LK_SMP_LTK); | |
1231 | if (old_key) { | |
1232 | key = old_key; | |
1233 | old_key_type = old_key->type; | |
1234 | } else { | |
1235 | key = kzalloc(sizeof(*key) + sizeof(*id), GFP_ATOMIC); | |
1236 | if (!key) | |
1237 | return -ENOMEM; | |
1238 | list_add(&key->list, &hdev->link_keys); | |
1239 | old_key_type = 0xff; | |
1240 | } | |
1241 | ||
1242 | key->dlen = sizeof(*id); | |
1243 | ||
1244 | bacpy(&key->bdaddr, bdaddr); | |
1245 | memcpy(key->val, ltk, sizeof(key->val)); | |
1246 | key->type = HCI_LK_SMP_LTK; | |
726b4ffc | 1247 | key->pin_len = key_size; |
75d262c2 VCG |
1248 | |
1249 | id = (void *) &key->data; | |
1250 | id->ediv = ediv; | |
1251 | memcpy(id->rand, rand, sizeof(id->rand)); | |
1252 | ||
1253 | if (new_key) | |
744cf19e | 1254 | mgmt_new_link_key(hdev, key, old_key_type); |
75d262c2 VCG |
1255 | |
1256 | return 0; | |
1257 | } | |
1258 | ||
55ed8ca1 JH |
1259 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1260 | { | |
1261 | struct link_key *key; | |
1262 | ||
1263 | key = hci_find_link_key(hdev, bdaddr); | |
1264 | if (!key) | |
1265 | return -ENOENT; | |
1266 | ||
1267 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1268 | ||
1269 | list_del(&key->list); | |
1270 | kfree(key); | |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
6bd32326 VT |
1275 | /* HCI command timer function */ |
1276 | static void hci_cmd_timer(unsigned long arg) | |
1277 | { | |
1278 | struct hci_dev *hdev = (void *) arg; | |
1279 | ||
1280 | BT_ERR("%s command tx timeout", hdev->name); | |
1281 | atomic_set(&hdev->cmd_cnt, 1); | |
c347b765 | 1282 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1283 | } |
1284 | ||
2763eda6 SJ |
1285 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
1286 | bdaddr_t *bdaddr) | |
1287 | { | |
1288 | struct oob_data *data; | |
1289 | ||
1290 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1291 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1292 | return data; | |
1293 | ||
1294 | return NULL; | |
1295 | } | |
1296 | ||
1297 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1298 | { | |
1299 | struct oob_data *data; | |
1300 | ||
1301 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1302 | if (!data) | |
1303 | return -ENOENT; | |
1304 | ||
1305 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1306 | ||
1307 | list_del(&data->list); | |
1308 | kfree(data); | |
1309 | ||
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1314 | { | |
1315 | struct oob_data *data, *n; | |
1316 | ||
1317 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1318 | list_del(&data->list); | |
1319 | kfree(data); | |
1320 | } | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
1325 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
1326 | u8 *randomizer) | |
1327 | { | |
1328 | struct oob_data *data; | |
1329 | ||
1330 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1331 | ||
1332 | if (!data) { | |
1333 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1334 | if (!data) | |
1335 | return -ENOMEM; | |
1336 | ||
1337 | bacpy(&data->bdaddr, bdaddr); | |
1338 | list_add(&data->list, &hdev->remote_oob_data); | |
1339 | } | |
1340 | ||
1341 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1342 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1343 | ||
1344 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
b2a66aad AJ |
1349 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
1350 | bdaddr_t *bdaddr) | |
1351 | { | |
8035ded4 | 1352 | struct bdaddr_list *b; |
b2a66aad | 1353 | |
8035ded4 | 1354 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1355 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1356 | return b; | |
b2a66aad AJ |
1357 | |
1358 | return NULL; | |
1359 | } | |
1360 | ||
1361 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1362 | { | |
1363 | struct list_head *p, *n; | |
1364 | ||
1365 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1366 | struct bdaddr_list *b; | |
1367 | ||
1368 | b = list_entry(p, struct bdaddr_list, list); | |
1369 | ||
1370 | list_del(p); | |
1371 | kfree(b); | |
1372 | } | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1378 | { | |
1379 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1380 | |
1381 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1382 | return -EBADF; | |
1383 | ||
5e762444 AJ |
1384 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1385 | return -EEXIST; | |
b2a66aad AJ |
1386 | |
1387 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1388 | if (!entry) |
1389 | return -ENOMEM; | |
b2a66aad AJ |
1390 | |
1391 | bacpy(&entry->bdaddr, bdaddr); | |
1392 | ||
1393 | list_add(&entry->list, &hdev->blacklist); | |
1394 | ||
744cf19e | 1395 | return mgmt_device_blocked(hdev, bdaddr); |
b2a66aad AJ |
1396 | } |
1397 | ||
1398 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1399 | { | |
1400 | struct bdaddr_list *entry; | |
b2a66aad | 1401 | |
1ec918ce | 1402 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1403 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1404 | |
1405 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1406 | if (!entry) |
5e762444 | 1407 | return -ENOENT; |
b2a66aad AJ |
1408 | |
1409 | list_del(&entry->list); | |
1410 | kfree(entry); | |
1411 | ||
744cf19e | 1412 | return mgmt_device_unblocked(hdev, bdaddr); |
b2a66aad AJ |
1413 | } |
1414 | ||
db323f2f | 1415 | static void hci_clear_adv_cache(struct work_struct *work) |
35815085 | 1416 | { |
db323f2f GP |
1417 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1418 | adv_work.work); | |
35815085 AG |
1419 | |
1420 | hci_dev_lock(hdev); | |
1421 | ||
1422 | hci_adv_entries_clear(hdev); | |
1423 | ||
1424 | hci_dev_unlock(hdev); | |
1425 | } | |
1426 | ||
76c8686f AG |
1427 | int hci_adv_entries_clear(struct hci_dev *hdev) |
1428 | { | |
1429 | struct adv_entry *entry, *tmp; | |
1430 | ||
1431 | list_for_each_entry_safe(entry, tmp, &hdev->adv_entries, list) { | |
1432 | list_del(&entry->list); | |
1433 | kfree(entry); | |
1434 | } | |
1435 | ||
1436 | BT_DBG("%s adv cache cleared", hdev->name); | |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1442 | { | |
1443 | struct adv_entry *entry; | |
1444 | ||
1445 | list_for_each_entry(entry, &hdev->adv_entries, list) | |
1446 | if (bacmp(bdaddr, &entry->bdaddr) == 0) | |
1447 | return entry; | |
1448 | ||
1449 | return NULL; | |
1450 | } | |
1451 | ||
1452 | static inline int is_connectable_adv(u8 evt_type) | |
1453 | { | |
1454 | if (evt_type == ADV_IND || evt_type == ADV_DIRECT_IND) | |
1455 | return 1; | |
1456 | ||
1457 | return 0; | |
1458 | } | |
1459 | ||
1460 | int hci_add_adv_entry(struct hci_dev *hdev, | |
1461 | struct hci_ev_le_advertising_info *ev) | |
1462 | { | |
1463 | struct adv_entry *entry; | |
1464 | ||
1465 | if (!is_connectable_adv(ev->evt_type)) | |
1466 | return -EINVAL; | |
1467 | ||
1468 | /* Only new entries should be added to adv_entries. So, if | |
1469 | * bdaddr was found, don't add it. */ | |
1470 | if (hci_find_adv_entry(hdev, &ev->bdaddr)) | |
1471 | return 0; | |
1472 | ||
1473 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
1474 | if (!entry) | |
1475 | return -ENOMEM; | |
1476 | ||
1477 | bacpy(&entry->bdaddr, &ev->bdaddr); | |
1478 | entry->bdaddr_type = ev->bdaddr_type; | |
1479 | ||
1480 | list_add(&entry->list, &hdev->adv_entries); | |
1481 | ||
1482 | BT_DBG("%s adv entry added: address %s type %u", hdev->name, | |
1483 | batostr(&entry->bdaddr), entry->bdaddr_type); | |
1484 | ||
1485 | return 0; | |
1486 | } | |
1487 | ||
1da177e4 LT |
1488 | /* Register HCI device */ |
1489 | int hci_register_dev(struct hci_dev *hdev) | |
1490 | { | |
1491 | struct list_head *head = &hci_dev_list, *p; | |
08add513 | 1492 | int i, id, error; |
1da177e4 | 1493 | |
c13854ce MH |
1494 | BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, |
1495 | hdev->bus, hdev->owner); | |
1da177e4 LT |
1496 | |
1497 | if (!hdev->open || !hdev->close || !hdev->destruct) | |
1498 | return -EINVAL; | |
1499 | ||
08add513 MM |
1500 | /* Do not allow HCI_AMP devices to register at index 0, |
1501 | * so the index can be used as the AMP controller ID. | |
1502 | */ | |
1503 | id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; | |
1504 | ||
f20d09d5 | 1505 | write_lock(&hci_dev_list_lock); |
1da177e4 LT |
1506 | |
1507 | /* Find first available device id */ | |
1508 | list_for_each(p, &hci_dev_list) { | |
1509 | if (list_entry(p, struct hci_dev, list)->id != id) | |
1510 | break; | |
1511 | head = p; id++; | |
1512 | } | |
8e87d142 | 1513 | |
1da177e4 LT |
1514 | sprintf(hdev->name, "hci%d", id); |
1515 | hdev->id = id; | |
c6feeb28 | 1516 | list_add_tail(&hdev->list, head); |
1da177e4 LT |
1517 | |
1518 | atomic_set(&hdev->refcnt, 1); | |
09fd0de5 | 1519 | mutex_init(&hdev->lock); |
1da177e4 LT |
1520 | |
1521 | hdev->flags = 0; | |
d23264a8 | 1522 | hdev->dev_flags = 0; |
1da177e4 | 1523 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
5b7f9909 | 1524 | hdev->esco_type = (ESCO_HV1); |
1da177e4 | 1525 | hdev->link_mode = (HCI_LM_ACCEPT); |
17fa4b9d | 1526 | hdev->io_capability = 0x03; /* No Input No Output */ |
1da177e4 | 1527 | |
04837f64 MH |
1528 | hdev->idle_timeout = 0; |
1529 | hdev->sniff_max_interval = 800; | |
1530 | hdev->sniff_min_interval = 80; | |
1531 | ||
b78752cc | 1532 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
c347b765 | 1533 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
3eff45ea | 1534 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
b78752cc | 1535 | |
1da177e4 LT |
1536 | |
1537 | skb_queue_head_init(&hdev->rx_q); | |
1538 | skb_queue_head_init(&hdev->cmd_q); | |
1539 | skb_queue_head_init(&hdev->raw_q); | |
1540 | ||
6bd32326 VT |
1541 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); |
1542 | ||
cd4c5391 | 1543 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1544 | hdev->reassembly[i] = NULL; |
1545 | ||
1da177e4 | 1546 | init_waitqueue_head(&hdev->req_wait_q); |
a6a67efd | 1547 | mutex_init(&hdev->req_lock); |
1da177e4 | 1548 | |
30883512 | 1549 | discovery_init(hdev); |
1da177e4 LT |
1550 | |
1551 | hci_conn_hash_init(hdev); | |
1552 | ||
2e58ef3e JH |
1553 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
1554 | ||
ea4bd8ba | 1555 | INIT_LIST_HEAD(&hdev->blacklist); |
f0358568 | 1556 | |
2aeb9a1a JH |
1557 | INIT_LIST_HEAD(&hdev->uuids); |
1558 | ||
55ed8ca1 JH |
1559 | INIT_LIST_HEAD(&hdev->link_keys); |
1560 | ||
2763eda6 SJ |
1561 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
1562 | ||
76c8686f AG |
1563 | INIT_LIST_HEAD(&hdev->adv_entries); |
1564 | ||
db323f2f | 1565 | INIT_DELAYED_WORK(&hdev->adv_work, hci_clear_adv_cache); |
ab81cbf9 | 1566 | INIT_WORK(&hdev->power_on, hci_power_on); |
3243553f | 1567 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
ab81cbf9 | 1568 | |
16ab91ab JH |
1569 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
1570 | ||
1da177e4 LT |
1571 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1572 | ||
1573 | atomic_set(&hdev->promisc, 0); | |
1574 | ||
f20d09d5 | 1575 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1576 | |
32845eb1 GP |
1577 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
1578 | WQ_MEM_RECLAIM, 1); | |
33ca954d DH |
1579 | if (!hdev->workqueue) { |
1580 | error = -ENOMEM; | |
1581 | goto err; | |
1582 | } | |
f48fd9c8 | 1583 | |
33ca954d DH |
1584 | error = hci_add_sysfs(hdev); |
1585 | if (error < 0) | |
1586 | goto err_wqueue; | |
1da177e4 | 1587 | |
611b30f7 MH |
1588 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
1589 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); | |
1590 | if (hdev->rfkill) { | |
1591 | if (rfkill_register(hdev->rfkill) < 0) { | |
1592 | rfkill_destroy(hdev->rfkill); | |
1593 | hdev->rfkill = NULL; | |
1594 | } | |
1595 | } | |
1596 | ||
ab81cbf9 JH |
1597 | set_bit(HCI_AUTO_OFF, &hdev->flags); |
1598 | set_bit(HCI_SETUP, &hdev->flags); | |
7f971041 | 1599 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1600 | |
1da177e4 LT |
1601 | hci_notify(hdev, HCI_DEV_REG); |
1602 | ||
1603 | return id; | |
f48fd9c8 | 1604 | |
33ca954d DH |
1605 | err_wqueue: |
1606 | destroy_workqueue(hdev->workqueue); | |
1607 | err: | |
f20d09d5 | 1608 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1609 | list_del(&hdev->list); |
f20d09d5 | 1610 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1611 | |
33ca954d | 1612 | return error; |
1da177e4 LT |
1613 | } |
1614 | EXPORT_SYMBOL(hci_register_dev); | |
1615 | ||
1616 | /* Unregister HCI device */ | |
59735631 | 1617 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1618 | { |
ef222013 MH |
1619 | int i; |
1620 | ||
c13854ce | 1621 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1622 | |
f20d09d5 | 1623 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1624 | list_del(&hdev->list); |
f20d09d5 | 1625 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1626 | |
1627 | hci_dev_do_close(hdev); | |
1628 | ||
cd4c5391 | 1629 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1630 | kfree_skb(hdev->reassembly[i]); |
1631 | ||
ab81cbf9 | 1632 | if (!test_bit(HCI_INIT, &hdev->flags) && |
56e5cb86 | 1633 | !test_bit(HCI_SETUP, &hdev->flags)) { |
09fd0de5 | 1634 | hci_dev_lock(hdev); |
744cf19e | 1635 | mgmt_index_removed(hdev); |
09fd0de5 | 1636 | hci_dev_unlock(hdev); |
56e5cb86 | 1637 | } |
ab81cbf9 | 1638 | |
2e58ef3e JH |
1639 | /* mgmt_index_removed should take care of emptying the |
1640 | * pending list */ | |
1641 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1642 | ||
1da177e4 LT |
1643 | hci_notify(hdev, HCI_DEV_UNREG); |
1644 | ||
611b30f7 MH |
1645 | if (hdev->rfkill) { |
1646 | rfkill_unregister(hdev->rfkill); | |
1647 | rfkill_destroy(hdev->rfkill); | |
1648 | } | |
1649 | ||
ce242970 | 1650 | hci_del_sysfs(hdev); |
147e2d59 | 1651 | |
db323f2f | 1652 | cancel_delayed_work_sync(&hdev->adv_work); |
c6f3c5f7 | 1653 | |
f48fd9c8 MH |
1654 | destroy_workqueue(hdev->workqueue); |
1655 | ||
09fd0de5 | 1656 | hci_dev_lock(hdev); |
e2e0cacb | 1657 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1658 | hci_uuids_clear(hdev); |
55ed8ca1 | 1659 | hci_link_keys_clear(hdev); |
2763eda6 | 1660 | hci_remote_oob_data_clear(hdev); |
76c8686f | 1661 | hci_adv_entries_clear(hdev); |
09fd0de5 | 1662 | hci_dev_unlock(hdev); |
e2e0cacb | 1663 | |
1da177e4 | 1664 | __hci_dev_put(hdev); |
1da177e4 LT |
1665 | } |
1666 | EXPORT_SYMBOL(hci_unregister_dev); | |
1667 | ||
1668 | /* Suspend HCI device */ | |
1669 | int hci_suspend_dev(struct hci_dev *hdev) | |
1670 | { | |
1671 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1672 | return 0; | |
1673 | } | |
1674 | EXPORT_SYMBOL(hci_suspend_dev); | |
1675 | ||
1676 | /* Resume HCI device */ | |
1677 | int hci_resume_dev(struct hci_dev *hdev) | |
1678 | { | |
1679 | hci_notify(hdev, HCI_DEV_RESUME); | |
1680 | return 0; | |
1681 | } | |
1682 | EXPORT_SYMBOL(hci_resume_dev); | |
1683 | ||
76bca880 MH |
1684 | /* Receive frame from HCI drivers */ |
1685 | int hci_recv_frame(struct sk_buff *skb) | |
1686 | { | |
1687 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1688 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
1689 | && !test_bit(HCI_INIT, &hdev->flags))) { | |
1690 | kfree_skb(skb); | |
1691 | return -ENXIO; | |
1692 | } | |
1693 | ||
1694 | /* Incomming skb */ | |
1695 | bt_cb(skb)->incoming = 1; | |
1696 | ||
1697 | /* Time stamp */ | |
1698 | __net_timestamp(skb); | |
1699 | ||
76bca880 | 1700 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1701 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1702 | |
76bca880 MH |
1703 | return 0; |
1704 | } | |
1705 | EXPORT_SYMBOL(hci_recv_frame); | |
1706 | ||
33e882a5 | 1707 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
1e429f38 | 1708 | int count, __u8 index) |
33e882a5 SS |
1709 | { |
1710 | int len = 0; | |
1711 | int hlen = 0; | |
1712 | int remain = count; | |
1713 | struct sk_buff *skb; | |
1714 | struct bt_skb_cb *scb; | |
1715 | ||
1716 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
1717 | index >= NUM_REASSEMBLY) | |
1718 | return -EILSEQ; | |
1719 | ||
1720 | skb = hdev->reassembly[index]; | |
1721 | ||
1722 | if (!skb) { | |
1723 | switch (type) { | |
1724 | case HCI_ACLDATA_PKT: | |
1725 | len = HCI_MAX_FRAME_SIZE; | |
1726 | hlen = HCI_ACL_HDR_SIZE; | |
1727 | break; | |
1728 | case HCI_EVENT_PKT: | |
1729 | len = HCI_MAX_EVENT_SIZE; | |
1730 | hlen = HCI_EVENT_HDR_SIZE; | |
1731 | break; | |
1732 | case HCI_SCODATA_PKT: | |
1733 | len = HCI_MAX_SCO_SIZE; | |
1734 | hlen = HCI_SCO_HDR_SIZE; | |
1735 | break; | |
1736 | } | |
1737 | ||
1e429f38 | 1738 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1739 | if (!skb) |
1740 | return -ENOMEM; | |
1741 | ||
1742 | scb = (void *) skb->cb; | |
1743 | scb->expect = hlen; | |
1744 | scb->pkt_type = type; | |
1745 | ||
1746 | skb->dev = (void *) hdev; | |
1747 | hdev->reassembly[index] = skb; | |
1748 | } | |
1749 | ||
1750 | while (count) { | |
1751 | scb = (void *) skb->cb; | |
1752 | len = min(scb->expect, (__u16)count); | |
1753 | ||
1754 | memcpy(skb_put(skb, len), data, len); | |
1755 | ||
1756 | count -= len; | |
1757 | data += len; | |
1758 | scb->expect -= len; | |
1759 | remain = count; | |
1760 | ||
1761 | switch (type) { | |
1762 | case HCI_EVENT_PKT: | |
1763 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1764 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1765 | scb->expect = h->plen; | |
1766 | ||
1767 | if (skb_tailroom(skb) < scb->expect) { | |
1768 | kfree_skb(skb); | |
1769 | hdev->reassembly[index] = NULL; | |
1770 | return -ENOMEM; | |
1771 | } | |
1772 | } | |
1773 | break; | |
1774 | ||
1775 | case HCI_ACLDATA_PKT: | |
1776 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1777 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1778 | scb->expect = __le16_to_cpu(h->dlen); | |
1779 | ||
1780 | if (skb_tailroom(skb) < scb->expect) { | |
1781 | kfree_skb(skb); | |
1782 | hdev->reassembly[index] = NULL; | |
1783 | return -ENOMEM; | |
1784 | } | |
1785 | } | |
1786 | break; | |
1787 | ||
1788 | case HCI_SCODATA_PKT: | |
1789 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1790 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1791 | scb->expect = h->dlen; | |
1792 | ||
1793 | if (skb_tailroom(skb) < scb->expect) { | |
1794 | kfree_skb(skb); | |
1795 | hdev->reassembly[index] = NULL; | |
1796 | return -ENOMEM; | |
1797 | } | |
1798 | } | |
1799 | break; | |
1800 | } | |
1801 | ||
1802 | if (scb->expect == 0) { | |
1803 | /* Complete frame */ | |
1804 | ||
1805 | bt_cb(skb)->pkt_type = type; | |
1806 | hci_recv_frame(skb); | |
1807 | ||
1808 | hdev->reassembly[index] = NULL; | |
1809 | return remain; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | return remain; | |
1814 | } | |
1815 | ||
ef222013 MH |
1816 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1817 | { | |
f39a3c06 SS |
1818 | int rem = 0; |
1819 | ||
ef222013 MH |
1820 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1821 | return -EILSEQ; | |
1822 | ||
da5f6c37 | 1823 | while (count) { |
1e429f38 | 1824 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
1825 | if (rem < 0) |
1826 | return rem; | |
ef222013 | 1827 | |
f39a3c06 SS |
1828 | data += (count - rem); |
1829 | count = rem; | |
f81c6224 | 1830 | } |
ef222013 | 1831 | |
f39a3c06 | 1832 | return rem; |
ef222013 MH |
1833 | } |
1834 | EXPORT_SYMBOL(hci_recv_fragment); | |
1835 | ||
99811510 SS |
1836 | #define STREAM_REASSEMBLY 0 |
1837 | ||
1838 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
1839 | { | |
1840 | int type; | |
1841 | int rem = 0; | |
1842 | ||
da5f6c37 | 1843 | while (count) { |
99811510 SS |
1844 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
1845 | ||
1846 | if (!skb) { | |
1847 | struct { char type; } *pkt; | |
1848 | ||
1849 | /* Start of the frame */ | |
1850 | pkt = data; | |
1851 | type = pkt->type; | |
1852 | ||
1853 | data++; | |
1854 | count--; | |
1855 | } else | |
1856 | type = bt_cb(skb)->pkt_type; | |
1857 | ||
1e429f38 GP |
1858 | rem = hci_reassembly(hdev, type, data, count, |
1859 | STREAM_REASSEMBLY); | |
99811510 SS |
1860 | if (rem < 0) |
1861 | return rem; | |
1862 | ||
1863 | data += (count - rem); | |
1864 | count = rem; | |
f81c6224 | 1865 | } |
99811510 SS |
1866 | |
1867 | return rem; | |
1868 | } | |
1869 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
1870 | ||
1da177e4 LT |
1871 | /* ---- Interface to upper protocols ---- */ |
1872 | ||
1da177e4 LT |
1873 | int hci_register_cb(struct hci_cb *cb) |
1874 | { | |
1875 | BT_DBG("%p name %s", cb, cb->name); | |
1876 | ||
f20d09d5 | 1877 | write_lock(&hci_cb_list_lock); |
1da177e4 | 1878 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 1879 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
1880 | |
1881 | return 0; | |
1882 | } | |
1883 | EXPORT_SYMBOL(hci_register_cb); | |
1884 | ||
1885 | int hci_unregister_cb(struct hci_cb *cb) | |
1886 | { | |
1887 | BT_DBG("%p name %s", cb, cb->name); | |
1888 | ||
f20d09d5 | 1889 | write_lock(&hci_cb_list_lock); |
1da177e4 | 1890 | list_del(&cb->list); |
f20d09d5 | 1891 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
1892 | |
1893 | return 0; | |
1894 | } | |
1895 | EXPORT_SYMBOL(hci_unregister_cb); | |
1896 | ||
1897 | static int hci_send_frame(struct sk_buff *skb) | |
1898 | { | |
1899 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1900 | ||
1901 | if (!hdev) { | |
1902 | kfree_skb(skb); | |
1903 | return -ENODEV; | |
1904 | } | |
1905 | ||
0d48d939 | 1906 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
1907 | |
1908 | if (atomic_read(&hdev->promisc)) { | |
1909 | /* Time stamp */ | |
a61bbcf2 | 1910 | __net_timestamp(skb); |
1da177e4 | 1911 | |
eec8d2bc | 1912 | hci_send_to_sock(hdev, skb, NULL); |
1da177e4 LT |
1913 | } |
1914 | ||
1915 | /* Get rid of skb owner, prior to sending to the driver. */ | |
1916 | skb_orphan(skb); | |
1917 | ||
1918 | return hdev->send(skb); | |
1919 | } | |
1920 | ||
1921 | /* Send HCI command */ | |
a9de9248 | 1922 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
1923 | { |
1924 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
1925 | struct hci_command_hdr *hdr; | |
1926 | struct sk_buff *skb; | |
1927 | ||
a9de9248 | 1928 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
1929 | |
1930 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
1931 | if (!skb) { | |
ef222013 | 1932 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
1933 | return -ENOMEM; |
1934 | } | |
1935 | ||
1936 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 1937 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
1938 | hdr->plen = plen; |
1939 | ||
1940 | if (plen) | |
1941 | memcpy(skb_put(skb, plen), param, plen); | |
1942 | ||
1943 | BT_DBG("skb len %d", skb->len); | |
1944 | ||
0d48d939 | 1945 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 1946 | skb->dev = (void *) hdev; |
c78ae283 | 1947 | |
a5040efa JH |
1948 | if (test_bit(HCI_INIT, &hdev->flags)) |
1949 | hdev->init_last_cmd = opcode; | |
1950 | ||
1da177e4 | 1951 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1952 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1953 | |
1954 | return 0; | |
1955 | } | |
1da177e4 LT |
1956 | |
1957 | /* Get data from the previously sent command */ | |
a9de9248 | 1958 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
1959 | { |
1960 | struct hci_command_hdr *hdr; | |
1961 | ||
1962 | if (!hdev->sent_cmd) | |
1963 | return NULL; | |
1964 | ||
1965 | hdr = (void *) hdev->sent_cmd->data; | |
1966 | ||
a9de9248 | 1967 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
1968 | return NULL; |
1969 | ||
a9de9248 | 1970 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
1da177e4 LT |
1971 | |
1972 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
1973 | } | |
1974 | ||
1975 | /* Send ACL data */ | |
1976 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
1977 | { | |
1978 | struct hci_acl_hdr *hdr; | |
1979 | int len = skb->len; | |
1980 | ||
badff6d0 ACM |
1981 | skb_push(skb, HCI_ACL_HDR_SIZE); |
1982 | skb_reset_transport_header(skb); | |
9c70220b | 1983 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
1984 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
1985 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
1986 | } |
1987 | ||
73d80deb LAD |
1988 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
1989 | struct sk_buff *skb, __u16 flags) | |
1da177e4 LT |
1990 | { |
1991 | struct hci_dev *hdev = conn->hdev; | |
1992 | struct sk_buff *list; | |
1993 | ||
70f23020 AE |
1994 | list = skb_shinfo(skb)->frag_list; |
1995 | if (!list) { | |
1da177e4 LT |
1996 | /* Non fragmented */ |
1997 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
1998 | ||
73d80deb | 1999 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2000 | } else { |
2001 | /* Fragmented */ | |
2002 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2003 | ||
2004 | skb_shinfo(skb)->frag_list = NULL; | |
2005 | ||
2006 | /* Queue all fragments atomically */ | |
af3e6359 | 2007 | spin_lock(&queue->lock); |
1da177e4 | 2008 | |
73d80deb | 2009 | __skb_queue_tail(queue, skb); |
e702112f AE |
2010 | |
2011 | flags &= ~ACL_START; | |
2012 | flags |= ACL_CONT; | |
1da177e4 LT |
2013 | do { |
2014 | skb = list; list = list->next; | |
8e87d142 | 2015 | |
1da177e4 | 2016 | skb->dev = (void *) hdev; |
0d48d939 | 2017 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2018 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2019 | |
2020 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2021 | ||
73d80deb | 2022 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2023 | } while (list); |
2024 | ||
af3e6359 | 2025 | spin_unlock(&queue->lock); |
1da177e4 | 2026 | } |
73d80deb LAD |
2027 | } |
2028 | ||
2029 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2030 | { | |
2031 | struct hci_conn *conn = chan->conn; | |
2032 | struct hci_dev *hdev = conn->hdev; | |
2033 | ||
2034 | BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); | |
2035 | ||
2036 | skb->dev = (void *) hdev; | |
2037 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
2038 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2039 | ||
2040 | hci_queue_acl(conn, &chan->data_q, skb, flags); | |
1da177e4 | 2041 | |
3eff45ea | 2042 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2043 | } |
2044 | EXPORT_SYMBOL(hci_send_acl); | |
2045 | ||
2046 | /* Send SCO data */ | |
0d861d8b | 2047 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2048 | { |
2049 | struct hci_dev *hdev = conn->hdev; | |
2050 | struct hci_sco_hdr hdr; | |
2051 | ||
2052 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2053 | ||
aca3192c | 2054 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2055 | hdr.dlen = skb->len; |
2056 | ||
badff6d0 ACM |
2057 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2058 | skb_reset_transport_header(skb); | |
9c70220b | 2059 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2060 | |
2061 | skb->dev = (void *) hdev; | |
0d48d939 | 2062 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2063 | |
1da177e4 | 2064 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2065 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2066 | } |
2067 | EXPORT_SYMBOL(hci_send_sco); | |
2068 | ||
2069 | /* ---- HCI TX task (outgoing data) ---- */ | |
2070 | ||
2071 | /* HCI Connection scheduler */ | |
2072 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) | |
2073 | { | |
2074 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2075 | struct hci_conn *conn = NULL, *c; |
1da177e4 | 2076 | int num = 0, min = ~0; |
1da177e4 | 2077 | |
8e87d142 | 2078 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2079 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2080 | |
2081 | rcu_read_lock(); | |
2082 | ||
2083 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2084 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2085 | continue; |
769be974 MH |
2086 | |
2087 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2088 | continue; | |
2089 | ||
1da177e4 LT |
2090 | num++; |
2091 | ||
2092 | if (c->sent < min) { | |
2093 | min = c->sent; | |
2094 | conn = c; | |
2095 | } | |
52087a79 LAD |
2096 | |
2097 | if (hci_conn_num(hdev, type) == num) | |
2098 | break; | |
1da177e4 LT |
2099 | } |
2100 | ||
bf4c6325 GP |
2101 | rcu_read_unlock(); |
2102 | ||
1da177e4 | 2103 | if (conn) { |
6ed58ec5 VT |
2104 | int cnt, q; |
2105 | ||
2106 | switch (conn->type) { | |
2107 | case ACL_LINK: | |
2108 | cnt = hdev->acl_cnt; | |
2109 | break; | |
2110 | case SCO_LINK: | |
2111 | case ESCO_LINK: | |
2112 | cnt = hdev->sco_cnt; | |
2113 | break; | |
2114 | case LE_LINK: | |
2115 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2116 | break; | |
2117 | default: | |
2118 | cnt = 0; | |
2119 | BT_ERR("Unknown link type"); | |
2120 | } | |
2121 | ||
2122 | q = cnt / num; | |
1da177e4 LT |
2123 | *quote = q ? q : 1; |
2124 | } else | |
2125 | *quote = 0; | |
2126 | ||
2127 | BT_DBG("conn %p quote %d", conn, *quote); | |
2128 | return conn; | |
2129 | } | |
2130 | ||
bae1f5d9 | 2131 | static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2132 | { |
2133 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2134 | struct hci_conn *c; |
1da177e4 | 2135 | |
bae1f5d9 | 2136 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2137 | |
bf4c6325 GP |
2138 | rcu_read_lock(); |
2139 | ||
1da177e4 | 2140 | /* Kill stalled connections */ |
bf4c6325 | 2141 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 VT |
2142 | if (c->type == type && c->sent) { |
2143 | BT_ERR("%s killing stalled connection %s", | |
1da177e4 LT |
2144 | hdev->name, batostr(&c->dst)); |
2145 | hci_acl_disconn(c, 0x13); | |
2146 | } | |
2147 | } | |
bf4c6325 GP |
2148 | |
2149 | rcu_read_unlock(); | |
1da177e4 LT |
2150 | } |
2151 | ||
73d80deb LAD |
2152 | static inline struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2153 | int *quote) | |
1da177e4 | 2154 | { |
73d80deb LAD |
2155 | struct hci_conn_hash *h = &hdev->conn_hash; |
2156 | struct hci_chan *chan = NULL; | |
2157 | int num = 0, min = ~0, cur_prio = 0; | |
1da177e4 | 2158 | struct hci_conn *conn; |
73d80deb LAD |
2159 | int cnt, q, conn_num = 0; |
2160 | ||
2161 | BT_DBG("%s", hdev->name); | |
2162 | ||
bf4c6325 GP |
2163 | rcu_read_lock(); |
2164 | ||
2165 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2166 | struct hci_chan *tmp; |
2167 | ||
2168 | if (conn->type != type) | |
2169 | continue; | |
2170 | ||
2171 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2172 | continue; | |
2173 | ||
2174 | conn_num++; | |
2175 | ||
8192edef | 2176 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2177 | struct sk_buff *skb; |
2178 | ||
2179 | if (skb_queue_empty(&tmp->data_q)) | |
2180 | continue; | |
2181 | ||
2182 | skb = skb_peek(&tmp->data_q); | |
2183 | if (skb->priority < cur_prio) | |
2184 | continue; | |
2185 | ||
2186 | if (skb->priority > cur_prio) { | |
2187 | num = 0; | |
2188 | min = ~0; | |
2189 | cur_prio = skb->priority; | |
2190 | } | |
2191 | ||
2192 | num++; | |
2193 | ||
2194 | if (conn->sent < min) { | |
2195 | min = conn->sent; | |
2196 | chan = tmp; | |
2197 | } | |
2198 | } | |
2199 | ||
2200 | if (hci_conn_num(hdev, type) == conn_num) | |
2201 | break; | |
2202 | } | |
2203 | ||
bf4c6325 GP |
2204 | rcu_read_unlock(); |
2205 | ||
73d80deb LAD |
2206 | if (!chan) |
2207 | return NULL; | |
2208 | ||
2209 | switch (chan->conn->type) { | |
2210 | case ACL_LINK: | |
2211 | cnt = hdev->acl_cnt; | |
2212 | break; | |
2213 | case SCO_LINK: | |
2214 | case ESCO_LINK: | |
2215 | cnt = hdev->sco_cnt; | |
2216 | break; | |
2217 | case LE_LINK: | |
2218 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2219 | break; | |
2220 | default: | |
2221 | cnt = 0; | |
2222 | BT_ERR("Unknown link type"); | |
2223 | } | |
2224 | ||
2225 | q = cnt / num; | |
2226 | *quote = q ? q : 1; | |
2227 | BT_DBG("chan %p quote %d", chan, *quote); | |
2228 | return chan; | |
2229 | } | |
2230 | ||
02b20f0b LAD |
2231 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2232 | { | |
2233 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2234 | struct hci_conn *conn; | |
2235 | int num = 0; | |
2236 | ||
2237 | BT_DBG("%s", hdev->name); | |
2238 | ||
bf4c6325 GP |
2239 | rcu_read_lock(); |
2240 | ||
2241 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2242 | struct hci_chan *chan; |
2243 | ||
2244 | if (conn->type != type) | |
2245 | continue; | |
2246 | ||
2247 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2248 | continue; | |
2249 | ||
2250 | num++; | |
2251 | ||
8192edef | 2252 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2253 | struct sk_buff *skb; |
2254 | ||
2255 | if (chan->sent) { | |
2256 | chan->sent = 0; | |
2257 | continue; | |
2258 | } | |
2259 | ||
2260 | if (skb_queue_empty(&chan->data_q)) | |
2261 | continue; | |
2262 | ||
2263 | skb = skb_peek(&chan->data_q); | |
2264 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2265 | continue; | |
2266 | ||
2267 | skb->priority = HCI_PRIO_MAX - 1; | |
2268 | ||
2269 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
2270 | skb->priority); | |
2271 | } | |
2272 | ||
2273 | if (hci_conn_num(hdev, type) == num) | |
2274 | break; | |
2275 | } | |
bf4c6325 GP |
2276 | |
2277 | rcu_read_unlock(); | |
2278 | ||
02b20f0b LAD |
2279 | } |
2280 | ||
73d80deb LAD |
2281 | static inline void hci_sched_acl(struct hci_dev *hdev) |
2282 | { | |
2283 | struct hci_chan *chan; | |
1da177e4 LT |
2284 | struct sk_buff *skb; |
2285 | int quote; | |
73d80deb | 2286 | unsigned int cnt; |
1da177e4 LT |
2287 | |
2288 | BT_DBG("%s", hdev->name); | |
2289 | ||
52087a79 LAD |
2290 | if (!hci_conn_num(hdev, ACL_LINK)) |
2291 | return; | |
2292 | ||
1da177e4 LT |
2293 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2294 | /* ACL tx timeout must be longer than maximum | |
2295 | * link supervision timeout (40.9 seconds) */ | |
82453021 | 2296 | if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) |
bae1f5d9 | 2297 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 LT |
2298 | } |
2299 | ||
73d80deb | 2300 | cnt = hdev->acl_cnt; |
04837f64 | 2301 | |
73d80deb LAD |
2302 | while (hdev->acl_cnt && |
2303 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { | |
ec1cce24 LAD |
2304 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2305 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb LAD |
2306 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
2307 | skb->len, skb->priority); | |
2308 | ||
ec1cce24 LAD |
2309 | /* Stop if priority has changed */ |
2310 | if (skb->priority < priority) | |
2311 | break; | |
2312 | ||
2313 | skb = skb_dequeue(&chan->data_q); | |
2314 | ||
73d80deb LAD |
2315 | hci_conn_enter_active_mode(chan->conn, |
2316 | bt_cb(skb)->force_active); | |
04837f64 | 2317 | |
1da177e4 LT |
2318 | hci_send_frame(skb); |
2319 | hdev->acl_last_tx = jiffies; | |
2320 | ||
2321 | hdev->acl_cnt--; | |
73d80deb LAD |
2322 | chan->sent++; |
2323 | chan->conn->sent++; | |
1da177e4 LT |
2324 | } |
2325 | } | |
02b20f0b LAD |
2326 | |
2327 | if (cnt != hdev->acl_cnt) | |
2328 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2329 | } |
2330 | ||
2331 | /* Schedule SCO */ | |
2332 | static inline void hci_sched_sco(struct hci_dev *hdev) | |
2333 | { | |
2334 | struct hci_conn *conn; | |
2335 | struct sk_buff *skb; | |
2336 | int quote; | |
2337 | ||
2338 | BT_DBG("%s", hdev->name); | |
2339 | ||
52087a79 LAD |
2340 | if (!hci_conn_num(hdev, SCO_LINK)) |
2341 | return; | |
2342 | ||
1da177e4 LT |
2343 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2344 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2345 | BT_DBG("skb %p len %d", skb, skb->len); | |
2346 | hci_send_frame(skb); | |
2347 | ||
2348 | conn->sent++; | |
2349 | if (conn->sent == ~0) | |
2350 | conn->sent = 0; | |
2351 | } | |
2352 | } | |
2353 | } | |
2354 | ||
b6a0dc82 MH |
2355 | static inline void hci_sched_esco(struct hci_dev *hdev) |
2356 | { | |
2357 | struct hci_conn *conn; | |
2358 | struct sk_buff *skb; | |
2359 | int quote; | |
2360 | ||
2361 | BT_DBG("%s", hdev->name); | |
2362 | ||
52087a79 LAD |
2363 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2364 | return; | |
2365 | ||
b6a0dc82 MH |
2366 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
2367 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2368 | BT_DBG("skb %p len %d", skb, skb->len); | |
2369 | hci_send_frame(skb); | |
2370 | ||
2371 | conn->sent++; | |
2372 | if (conn->sent == ~0) | |
2373 | conn->sent = 0; | |
2374 | } | |
2375 | } | |
2376 | } | |
2377 | ||
6ed58ec5 VT |
2378 | static inline void hci_sched_le(struct hci_dev *hdev) |
2379 | { | |
73d80deb | 2380 | struct hci_chan *chan; |
6ed58ec5 | 2381 | struct sk_buff *skb; |
02b20f0b | 2382 | int quote, cnt, tmp; |
6ed58ec5 VT |
2383 | |
2384 | BT_DBG("%s", hdev->name); | |
2385 | ||
52087a79 LAD |
2386 | if (!hci_conn_num(hdev, LE_LINK)) |
2387 | return; | |
2388 | ||
6ed58ec5 VT |
2389 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2390 | /* LE tx timeout must be longer than maximum | |
2391 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2392 | if (!hdev->le_cnt && hdev->le_pkts && |
6ed58ec5 | 2393 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2394 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2395 | } |
2396 | ||
2397 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2398 | tmp = cnt; |
73d80deb | 2399 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2400 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2401 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb LAD |
2402 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
2403 | skb->len, skb->priority); | |
6ed58ec5 | 2404 | |
ec1cce24 LAD |
2405 | /* Stop if priority has changed */ |
2406 | if (skb->priority < priority) | |
2407 | break; | |
2408 | ||
2409 | skb = skb_dequeue(&chan->data_q); | |
2410 | ||
6ed58ec5 VT |
2411 | hci_send_frame(skb); |
2412 | hdev->le_last_tx = jiffies; | |
2413 | ||
2414 | cnt--; | |
73d80deb LAD |
2415 | chan->sent++; |
2416 | chan->conn->sent++; | |
6ed58ec5 VT |
2417 | } |
2418 | } | |
73d80deb | 2419 | |
6ed58ec5 VT |
2420 | if (hdev->le_pkts) |
2421 | hdev->le_cnt = cnt; | |
2422 | else | |
2423 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2424 | |
2425 | if (cnt != tmp) | |
2426 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2427 | } |
2428 | ||
3eff45ea | 2429 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2430 | { |
3eff45ea | 2431 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2432 | struct sk_buff *skb; |
2433 | ||
6ed58ec5 VT |
2434 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
2435 | hdev->sco_cnt, hdev->le_cnt); | |
1da177e4 LT |
2436 | |
2437 | /* Schedule queues and send stuff to HCI driver */ | |
2438 | ||
2439 | hci_sched_acl(hdev); | |
2440 | ||
2441 | hci_sched_sco(hdev); | |
2442 | ||
b6a0dc82 MH |
2443 | hci_sched_esco(hdev); |
2444 | ||
6ed58ec5 VT |
2445 | hci_sched_le(hdev); |
2446 | ||
1da177e4 LT |
2447 | /* Send next queued raw (unknown type) packet */ |
2448 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2449 | hci_send_frame(skb); | |
1da177e4 LT |
2450 | } |
2451 | ||
25985edc | 2452 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2453 | |
2454 | /* ACL data packet */ | |
2455 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2456 | { | |
2457 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2458 | struct hci_conn *conn; | |
2459 | __u16 handle, flags; | |
2460 | ||
2461 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2462 | ||
2463 | handle = __le16_to_cpu(hdr->handle); | |
2464 | flags = hci_flags(handle); | |
2465 | handle = hci_handle(handle); | |
2466 | ||
2467 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); | |
2468 | ||
2469 | hdev->stat.acl_rx++; | |
2470 | ||
2471 | hci_dev_lock(hdev); | |
2472 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2473 | hci_dev_unlock(hdev); | |
8e87d142 | 2474 | |
1da177e4 | 2475 | if (conn) { |
65983fc7 | 2476 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2477 | |
1da177e4 | 2478 | /* Send to upper protocol */ |
686ebf28 UF |
2479 | l2cap_recv_acldata(conn, skb, flags); |
2480 | return; | |
1da177e4 | 2481 | } else { |
8e87d142 | 2482 | BT_ERR("%s ACL packet for unknown connection handle %d", |
1da177e4 LT |
2483 | hdev->name, handle); |
2484 | } | |
2485 | ||
2486 | kfree_skb(skb); | |
2487 | } | |
2488 | ||
2489 | /* SCO data packet */ | |
2490 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2491 | { | |
2492 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2493 | struct hci_conn *conn; | |
2494 | __u16 handle; | |
2495 | ||
2496 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2497 | ||
2498 | handle = __le16_to_cpu(hdr->handle); | |
2499 | ||
2500 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); | |
2501 | ||
2502 | hdev->stat.sco_rx++; | |
2503 | ||
2504 | hci_dev_lock(hdev); | |
2505 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2506 | hci_dev_unlock(hdev); | |
2507 | ||
2508 | if (conn) { | |
1da177e4 | 2509 | /* Send to upper protocol */ |
686ebf28 UF |
2510 | sco_recv_scodata(conn, skb); |
2511 | return; | |
1da177e4 | 2512 | } else { |
8e87d142 | 2513 | BT_ERR("%s SCO packet for unknown connection handle %d", |
1da177e4 LT |
2514 | hdev->name, handle); |
2515 | } | |
2516 | ||
2517 | kfree_skb(skb); | |
2518 | } | |
2519 | ||
b78752cc | 2520 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2521 | { |
b78752cc | 2522 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2523 | struct sk_buff *skb; |
2524 | ||
2525 | BT_DBG("%s", hdev->name); | |
2526 | ||
1da177e4 LT |
2527 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
2528 | if (atomic_read(&hdev->promisc)) { | |
2529 | /* Send copy to the sockets */ | |
eec8d2bc | 2530 | hci_send_to_sock(hdev, skb, NULL); |
1da177e4 LT |
2531 | } |
2532 | ||
2533 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2534 | kfree_skb(skb); | |
2535 | continue; | |
2536 | } | |
2537 | ||
2538 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2539 | /* Don't process data packets in this states. */ | |
0d48d939 | 2540 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2541 | case HCI_ACLDATA_PKT: |
2542 | case HCI_SCODATA_PKT: | |
2543 | kfree_skb(skb); | |
2544 | continue; | |
3ff50b79 | 2545 | } |
1da177e4 LT |
2546 | } |
2547 | ||
2548 | /* Process frame */ | |
0d48d939 | 2549 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2550 | case HCI_EVENT_PKT: |
b78752cc | 2551 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2552 | hci_event_packet(hdev, skb); |
2553 | break; | |
2554 | ||
2555 | case HCI_ACLDATA_PKT: | |
2556 | BT_DBG("%s ACL data packet", hdev->name); | |
2557 | hci_acldata_packet(hdev, skb); | |
2558 | break; | |
2559 | ||
2560 | case HCI_SCODATA_PKT: | |
2561 | BT_DBG("%s SCO data packet", hdev->name); | |
2562 | hci_scodata_packet(hdev, skb); | |
2563 | break; | |
2564 | ||
2565 | default: | |
2566 | kfree_skb(skb); | |
2567 | break; | |
2568 | } | |
2569 | } | |
1da177e4 LT |
2570 | } |
2571 | ||
c347b765 | 2572 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2573 | { |
c347b765 | 2574 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2575 | struct sk_buff *skb; |
2576 | ||
2577 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); | |
2578 | ||
1da177e4 | 2579 | /* Send queued commands */ |
5a08ecce AE |
2580 | if (atomic_read(&hdev->cmd_cnt)) { |
2581 | skb = skb_dequeue(&hdev->cmd_q); | |
2582 | if (!skb) | |
2583 | return; | |
2584 | ||
7585b97a | 2585 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2586 | |
70f23020 AE |
2587 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2588 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2589 | atomic_dec(&hdev->cmd_cnt); |
2590 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2591 | if (test_bit(HCI_RESET, &hdev->flags)) |
2592 | del_timer(&hdev->cmd_timer); | |
2593 | else | |
2594 | mod_timer(&hdev->cmd_timer, | |
6bd32326 | 2595 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
1da177e4 LT |
2596 | } else { |
2597 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2598 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2599 | } |
2600 | } | |
2601 | } | |
2519a1fc AG |
2602 | |
2603 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2604 | { | |
2605 | /* General inquiry access code (GIAC) */ | |
2606 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2607 | struct hci_cp_inquiry cp; | |
2608 | ||
2609 | BT_DBG("%s", hdev->name); | |
2610 | ||
2611 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2612 | return -EINPROGRESS; | |
2613 | ||
4663262c JH |
2614 | inquiry_cache_flush(hdev); |
2615 | ||
2519a1fc AG |
2616 | memset(&cp, 0, sizeof(cp)); |
2617 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2618 | cp.length = length; | |
2619 | ||
2620 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2621 | } | |
023d5049 AG |
2622 | |
2623 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2624 | { | |
2625 | BT_DBG("%s", hdev->name); | |
2626 | ||
2627 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
2628 | return -EPERM; | |
2629 | ||
2630 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2631 | } | |
7784d78f AE |
2632 | |
2633 | module_param(enable_hs, bool, 0644); | |
2634 | MODULE_PARM_DESC(enable_hs, "Enable High Speed"); |