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