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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 | ||
8b281b9c | 58 | bool enable_hs; |
7784d78f | 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 ---- */ | |
ff9ef578 | 358 | |
30dc78e1 JH |
359 | bool hci_discovery_active(struct hci_dev *hdev) |
360 | { | |
361 | struct discovery_state *discov = &hdev->discovery; | |
362 | ||
363 | if (discov->state == DISCOVERY_INQUIRY || | |
364 | discov->state == DISCOVERY_RESOLVING) | |
365 | return true; | |
366 | ||
367 | return false; | |
368 | } | |
369 | ||
ff9ef578 JH |
370 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
371 | { | |
372 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
373 | ||
374 | if (hdev->discovery.state == state) | |
375 | return; | |
376 | ||
377 | switch (state) { | |
378 | case DISCOVERY_STOPPED: | |
379 | mgmt_discovering(hdev, 0); | |
380 | break; | |
381 | case DISCOVERY_STARTING: | |
382 | break; | |
30dc78e1 | 383 | case DISCOVERY_INQUIRY: |
ff9ef578 JH |
384 | mgmt_discovering(hdev, 1); |
385 | break; | |
30dc78e1 JH |
386 | case DISCOVERY_RESOLVING: |
387 | break; | |
ff9ef578 JH |
388 | case DISCOVERY_STOPPING: |
389 | break; | |
390 | } | |
391 | ||
392 | hdev->discovery.state = state; | |
393 | } | |
394 | ||
1da177e4 LT |
395 | static void inquiry_cache_flush(struct hci_dev *hdev) |
396 | { | |
30883512 | 397 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 398 | struct inquiry_entry *p, *n; |
1da177e4 | 399 | |
561aafbc JH |
400 | list_for_each_entry_safe(p, n, &cache->all, all) { |
401 | list_del(&p->all); | |
b57c1a56 | 402 | kfree(p); |
1da177e4 | 403 | } |
561aafbc JH |
404 | |
405 | INIT_LIST_HEAD(&cache->unknown); | |
406 | INIT_LIST_HEAD(&cache->resolve); | |
ff9ef578 | 407 | cache->state = DISCOVERY_STOPPED; |
1da177e4 LT |
408 | } |
409 | ||
410 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
411 | { | |
30883512 | 412 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
413 | struct inquiry_entry *e; |
414 | ||
415 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
416 | ||
561aafbc JH |
417 | list_for_each_entry(e, &cache->all, all) { |
418 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
419 | return e; | |
420 | } | |
421 | ||
422 | return NULL; | |
423 | } | |
424 | ||
425 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
426 | bdaddr_t *bdaddr) | |
427 | { | |
30883512 | 428 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
429 | struct inquiry_entry *e; |
430 | ||
431 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
432 | ||
433 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 434 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
435 | return e; |
436 | } | |
437 | ||
438 | return NULL; | |
1da177e4 LT |
439 | } |
440 | ||
30dc78e1 JH |
441 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
442 | bdaddr_t *bdaddr, | |
443 | int state) | |
444 | { | |
445 | struct discovery_state *cache = &hdev->discovery; | |
446 | struct inquiry_entry *e; | |
447 | ||
448 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); | |
449 | ||
450 | list_for_each_entry(e, &cache->resolve, list) { | |
451 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
452 | return e; | |
453 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
454 | return e; | |
455 | } | |
456 | ||
457 | return NULL; | |
458 | } | |
459 | ||
a3d4e20a JH |
460 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
461 | struct inquiry_entry *ie) | |
462 | { | |
463 | struct discovery_state *cache = &hdev->discovery; | |
464 | struct list_head *pos = &cache->resolve; | |
465 | struct inquiry_entry *p; | |
466 | ||
467 | list_del(&ie->list); | |
468 | ||
469 | list_for_each_entry(p, &cache->resolve, list) { | |
470 | if (p->name_state != NAME_PENDING && | |
471 | abs(p->data.rssi) >= abs(ie->data.rssi)) | |
472 | break; | |
473 | pos = &p->list; | |
474 | } | |
475 | ||
476 | list_add(&ie->list, pos); | |
477 | } | |
478 | ||
3175405b | 479 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
561aafbc | 480 | bool name_known) |
1da177e4 | 481 | { |
30883512 | 482 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 483 | struct inquiry_entry *ie; |
1da177e4 LT |
484 | |
485 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
486 | ||
70f23020 | 487 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a JH |
488 | if (ie) { |
489 | if (ie->name_state == NAME_NEEDED && | |
490 | data->rssi != ie->data.rssi) { | |
491 | ie->data.rssi = data->rssi; | |
492 | hci_inquiry_cache_update_resolve(hdev, ie); | |
493 | } | |
494 | ||
561aafbc | 495 | goto update; |
a3d4e20a | 496 | } |
561aafbc JH |
497 | |
498 | /* Entry not in the cache. Add new one. */ | |
499 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
500 | if (!ie) | |
3175405b | 501 | return false; |
561aafbc JH |
502 | |
503 | list_add(&ie->all, &cache->all); | |
504 | ||
505 | if (name_known) { | |
506 | ie->name_state = NAME_KNOWN; | |
507 | } else { | |
508 | ie->name_state = NAME_NOT_KNOWN; | |
509 | list_add(&ie->list, &cache->unknown); | |
510 | } | |
70f23020 | 511 | |
561aafbc JH |
512 | update: |
513 | if (name_known && ie->name_state != NAME_KNOWN && | |
514 | ie->name_state != NAME_PENDING) { | |
515 | ie->name_state = NAME_KNOWN; | |
516 | list_del(&ie->list); | |
1da177e4 LT |
517 | } |
518 | ||
70f23020 AE |
519 | memcpy(&ie->data, data, sizeof(*data)); |
520 | ie->timestamp = jiffies; | |
1da177e4 | 521 | cache->timestamp = jiffies; |
3175405b JH |
522 | |
523 | if (ie->name_state == NAME_NOT_KNOWN) | |
524 | return false; | |
525 | ||
526 | return true; | |
1da177e4 LT |
527 | } |
528 | ||
529 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
530 | { | |
30883512 | 531 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
532 | struct inquiry_info *info = (struct inquiry_info *) buf; |
533 | struct inquiry_entry *e; | |
534 | int copied = 0; | |
535 | ||
561aafbc | 536 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 537 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
538 | |
539 | if (copied >= num) | |
540 | break; | |
541 | ||
1da177e4 LT |
542 | bacpy(&info->bdaddr, &data->bdaddr); |
543 | info->pscan_rep_mode = data->pscan_rep_mode; | |
544 | info->pscan_period_mode = data->pscan_period_mode; | |
545 | info->pscan_mode = data->pscan_mode; | |
546 | memcpy(info->dev_class, data->dev_class, 3); | |
547 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 548 | |
1da177e4 | 549 | info++; |
b57c1a56 | 550 | copied++; |
1da177e4 LT |
551 | } |
552 | ||
553 | BT_DBG("cache %p, copied %d", cache, copied); | |
554 | return copied; | |
555 | } | |
556 | ||
557 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
558 | { | |
559 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
560 | struct hci_cp_inquiry cp; | |
561 | ||
562 | BT_DBG("%s", hdev->name); | |
563 | ||
564 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
565 | return; | |
566 | ||
567 | /* Start Inquiry */ | |
568 | memcpy(&cp.lap, &ir->lap, 3); | |
569 | cp.length = ir->length; | |
570 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 571 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
572 | } |
573 | ||
574 | int hci_inquiry(void __user *arg) | |
575 | { | |
576 | __u8 __user *ptr = arg; | |
577 | struct hci_inquiry_req ir; | |
578 | struct hci_dev *hdev; | |
579 | int err = 0, do_inquiry = 0, max_rsp; | |
580 | long timeo; | |
581 | __u8 *buf; | |
582 | ||
583 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
584 | return -EFAULT; | |
585 | ||
5a08ecce AE |
586 | hdev = hci_dev_get(ir.dev_id); |
587 | if (!hdev) | |
1da177e4 LT |
588 | return -ENODEV; |
589 | ||
09fd0de5 | 590 | hci_dev_lock(hdev); |
8e87d142 | 591 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
70f23020 AE |
592 | inquiry_cache_empty(hdev) || |
593 | ir.flags & IREQ_CACHE_FLUSH) { | |
1da177e4 LT |
594 | inquiry_cache_flush(hdev); |
595 | do_inquiry = 1; | |
596 | } | |
09fd0de5 | 597 | hci_dev_unlock(hdev); |
1da177e4 | 598 | |
04837f64 | 599 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
600 | |
601 | if (do_inquiry) { | |
602 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
603 | if (err < 0) | |
604 | goto done; | |
605 | } | |
1da177e4 LT |
606 | |
607 | /* for unlimited number of responses we will use buffer with 255 entries */ | |
608 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; | |
609 | ||
610 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
611 | * copy it to the user space. | |
612 | */ | |
01df8c31 | 613 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 614 | if (!buf) { |
1da177e4 LT |
615 | err = -ENOMEM; |
616 | goto done; | |
617 | } | |
618 | ||
09fd0de5 | 619 | hci_dev_lock(hdev); |
1da177e4 | 620 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 621 | hci_dev_unlock(hdev); |
1da177e4 LT |
622 | |
623 | BT_DBG("num_rsp %d", ir.num_rsp); | |
624 | ||
625 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
626 | ptr += sizeof(ir); | |
627 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
628 | ir.num_rsp)) | |
629 | err = -EFAULT; | |
8e87d142 | 630 | } else |
1da177e4 LT |
631 | err = -EFAULT; |
632 | ||
633 | kfree(buf); | |
634 | ||
635 | done: | |
636 | hci_dev_put(hdev); | |
637 | return err; | |
638 | } | |
639 | ||
640 | /* ---- HCI ioctl helpers ---- */ | |
641 | ||
642 | int hci_dev_open(__u16 dev) | |
643 | { | |
644 | struct hci_dev *hdev; | |
645 | int ret = 0; | |
646 | ||
5a08ecce AE |
647 | hdev = hci_dev_get(dev); |
648 | if (!hdev) | |
1da177e4 LT |
649 | return -ENODEV; |
650 | ||
651 | BT_DBG("%s %p", hdev->name, hdev); | |
652 | ||
653 | hci_req_lock(hdev); | |
654 | ||
611b30f7 MH |
655 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
656 | ret = -ERFKILL; | |
657 | goto done; | |
658 | } | |
659 | ||
1da177e4 LT |
660 | if (test_bit(HCI_UP, &hdev->flags)) { |
661 | ret = -EALREADY; | |
662 | goto done; | |
663 | } | |
664 | ||
665 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
666 | set_bit(HCI_RAW, &hdev->flags); | |
667 | ||
07e3b94a AE |
668 | /* Treat all non BR/EDR controllers as raw devices if |
669 | enable_hs is not set */ | |
670 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
671 | set_bit(HCI_RAW, &hdev->flags); |
672 | ||
1da177e4 LT |
673 | if (hdev->open(hdev)) { |
674 | ret = -EIO; | |
675 | goto done; | |
676 | } | |
677 | ||
678 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
679 | atomic_set(&hdev->cmd_cnt, 1); | |
680 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 681 | hdev->init_last_cmd = 0; |
1da177e4 | 682 | |
04837f64 MH |
683 | ret = __hci_request(hdev, hci_init_req, 0, |
684 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 | 685 | |
eead27da | 686 | if (lmp_host_le_capable(hdev)) |
6ed58ec5 VT |
687 | ret = __hci_request(hdev, hci_le_init_req, 0, |
688 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
689 | ||
1da177e4 LT |
690 | clear_bit(HCI_INIT, &hdev->flags); |
691 | } | |
692 | ||
693 | if (!ret) { | |
694 | hci_dev_hold(hdev); | |
695 | set_bit(HCI_UP, &hdev->flags); | |
696 | hci_notify(hdev, HCI_DEV_UP); | |
a8b2d5c2 | 697 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 698 | hci_dev_lock(hdev); |
744cf19e | 699 | mgmt_powered(hdev, 1); |
09fd0de5 | 700 | hci_dev_unlock(hdev); |
56e5cb86 | 701 | } |
8e87d142 | 702 | } else { |
1da177e4 | 703 | /* Init failed, cleanup */ |
3eff45ea | 704 | flush_work(&hdev->tx_work); |
c347b765 | 705 | flush_work(&hdev->cmd_work); |
b78752cc | 706 | flush_work(&hdev->rx_work); |
1da177e4 LT |
707 | |
708 | skb_queue_purge(&hdev->cmd_q); | |
709 | skb_queue_purge(&hdev->rx_q); | |
710 | ||
711 | if (hdev->flush) | |
712 | hdev->flush(hdev); | |
713 | ||
714 | if (hdev->sent_cmd) { | |
715 | kfree_skb(hdev->sent_cmd); | |
716 | hdev->sent_cmd = NULL; | |
717 | } | |
718 | ||
719 | hdev->close(hdev); | |
720 | hdev->flags = 0; | |
721 | } | |
722 | ||
723 | done: | |
724 | hci_req_unlock(hdev); | |
725 | hci_dev_put(hdev); | |
726 | return ret; | |
727 | } | |
728 | ||
729 | static int hci_dev_do_close(struct hci_dev *hdev) | |
730 | { | |
731 | BT_DBG("%s %p", hdev->name, hdev); | |
732 | ||
733 | hci_req_cancel(hdev, ENODEV); | |
734 | hci_req_lock(hdev); | |
735 | ||
736 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 737 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
738 | hci_req_unlock(hdev); |
739 | return 0; | |
740 | } | |
741 | ||
3eff45ea GP |
742 | /* Flush RX and TX works */ |
743 | flush_work(&hdev->tx_work); | |
b78752cc | 744 | flush_work(&hdev->rx_work); |
1da177e4 | 745 | |
16ab91ab | 746 | if (hdev->discov_timeout > 0) { |
e0f9309f | 747 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab JH |
748 | hdev->discov_timeout = 0; |
749 | } | |
750 | ||
a8b2d5c2 | 751 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 752 | cancel_delayed_work(&hdev->power_off); |
3243553f | 753 | |
a8b2d5c2 | 754 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
755 | cancel_delayed_work(&hdev->service_cache); |
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 | hci_notify(hdev, HCI_DEV_DOWN); | |
763 | ||
764 | if (hdev->flush) | |
765 | hdev->flush(hdev); | |
766 | ||
767 | /* Reset device */ | |
768 | skb_queue_purge(&hdev->cmd_q); | |
769 | atomic_set(&hdev->cmd_cnt, 1); | |
770 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
771 | set_bit(HCI_INIT, &hdev->flags); | |
04837f64 | 772 | __hci_request(hdev, hci_reset_req, 0, |
cad44c2b | 773 | msecs_to_jiffies(250)); |
1da177e4 LT |
774 | clear_bit(HCI_INIT, &hdev->flags); |
775 | } | |
776 | ||
c347b765 GP |
777 | /* flush cmd work */ |
778 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
779 | |
780 | /* Drop queues */ | |
781 | skb_queue_purge(&hdev->rx_q); | |
782 | skb_queue_purge(&hdev->cmd_q); | |
783 | skb_queue_purge(&hdev->raw_q); | |
784 | ||
785 | /* Drop last sent command */ | |
786 | if (hdev->sent_cmd) { | |
b79f44c1 | 787 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
788 | kfree_skb(hdev->sent_cmd); |
789 | hdev->sent_cmd = NULL; | |
790 | } | |
791 | ||
792 | /* After this point our queues are empty | |
793 | * and no tasks are scheduled. */ | |
794 | hdev->close(hdev); | |
795 | ||
09fd0de5 | 796 | hci_dev_lock(hdev); |
744cf19e | 797 | mgmt_powered(hdev, 0); |
09fd0de5 | 798 | hci_dev_unlock(hdev); |
5add6af8 | 799 | |
1da177e4 LT |
800 | /* Clear flags */ |
801 | hdev->flags = 0; | |
802 | ||
803 | hci_req_unlock(hdev); | |
804 | ||
805 | hci_dev_put(hdev); | |
806 | return 0; | |
807 | } | |
808 | ||
809 | int hci_dev_close(__u16 dev) | |
810 | { | |
811 | struct hci_dev *hdev; | |
812 | int err; | |
813 | ||
70f23020 AE |
814 | hdev = hci_dev_get(dev); |
815 | if (!hdev) | |
1da177e4 LT |
816 | return -ENODEV; |
817 | err = hci_dev_do_close(hdev); | |
818 | hci_dev_put(hdev); | |
819 | return err; | |
820 | } | |
821 | ||
822 | int hci_dev_reset(__u16 dev) | |
823 | { | |
824 | struct hci_dev *hdev; | |
825 | int ret = 0; | |
826 | ||
70f23020 AE |
827 | hdev = hci_dev_get(dev); |
828 | if (!hdev) | |
1da177e4 LT |
829 | return -ENODEV; |
830 | ||
831 | hci_req_lock(hdev); | |
1da177e4 LT |
832 | |
833 | if (!test_bit(HCI_UP, &hdev->flags)) | |
834 | goto done; | |
835 | ||
836 | /* Drop queues */ | |
837 | skb_queue_purge(&hdev->rx_q); | |
838 | skb_queue_purge(&hdev->cmd_q); | |
839 | ||
09fd0de5 | 840 | hci_dev_lock(hdev); |
1da177e4 LT |
841 | inquiry_cache_flush(hdev); |
842 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 843 | hci_dev_unlock(hdev); |
1da177e4 LT |
844 | |
845 | if (hdev->flush) | |
846 | hdev->flush(hdev); | |
847 | ||
8e87d142 | 848 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 849 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
850 | |
851 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
04837f64 MH |
852 | ret = __hci_request(hdev, hci_reset_req, 0, |
853 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
854 | |
855 | done: | |
1da177e4 LT |
856 | hci_req_unlock(hdev); |
857 | hci_dev_put(hdev); | |
858 | return ret; | |
859 | } | |
860 | ||
861 | int hci_dev_reset_stat(__u16 dev) | |
862 | { | |
863 | struct hci_dev *hdev; | |
864 | int ret = 0; | |
865 | ||
70f23020 AE |
866 | hdev = hci_dev_get(dev); |
867 | if (!hdev) | |
1da177e4 LT |
868 | return -ENODEV; |
869 | ||
870 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
871 | ||
872 | hci_dev_put(hdev); | |
873 | ||
874 | return ret; | |
875 | } | |
876 | ||
877 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
878 | { | |
879 | struct hci_dev *hdev; | |
880 | struct hci_dev_req dr; | |
881 | int err = 0; | |
882 | ||
883 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
884 | return -EFAULT; | |
885 | ||
70f23020 AE |
886 | hdev = hci_dev_get(dr.dev_id); |
887 | if (!hdev) | |
1da177e4 LT |
888 | return -ENODEV; |
889 | ||
890 | switch (cmd) { | |
891 | case HCISETAUTH: | |
04837f64 MH |
892 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
893 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
894 | break; |
895 | ||
896 | case HCISETENCRYPT: | |
897 | if (!lmp_encrypt_capable(hdev)) { | |
898 | err = -EOPNOTSUPP; | |
899 | break; | |
900 | } | |
901 | ||
902 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
903 | /* Auth must be enabled first */ | |
04837f64 MH |
904 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
905 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
906 | if (err) |
907 | break; | |
908 | } | |
909 | ||
04837f64 MH |
910 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
911 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
912 | break; |
913 | ||
914 | case HCISETSCAN: | |
04837f64 MH |
915 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
916 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
917 | break; |
918 | ||
1da177e4 | 919 | case HCISETLINKPOL: |
e4e8e37c MH |
920 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
921 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
922 | break; |
923 | ||
924 | case HCISETLINKMODE: | |
e4e8e37c MH |
925 | hdev->link_mode = ((__u16) dr.dev_opt) & |
926 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
927 | break; | |
928 | ||
929 | case HCISETPTYPE: | |
930 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
931 | break; |
932 | ||
933 | case HCISETACLMTU: | |
e4e8e37c MH |
934 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
935 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
936 | break; |
937 | ||
938 | case HCISETSCOMTU: | |
e4e8e37c MH |
939 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
940 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
941 | break; |
942 | ||
943 | default: | |
944 | err = -EINVAL; | |
945 | break; | |
946 | } | |
e4e8e37c | 947 | |
1da177e4 LT |
948 | hci_dev_put(hdev); |
949 | return err; | |
950 | } | |
951 | ||
952 | int hci_get_dev_list(void __user *arg) | |
953 | { | |
8035ded4 | 954 | struct hci_dev *hdev; |
1da177e4 LT |
955 | struct hci_dev_list_req *dl; |
956 | struct hci_dev_req *dr; | |
1da177e4 LT |
957 | int n = 0, size, err; |
958 | __u16 dev_num; | |
959 | ||
960 | if (get_user(dev_num, (__u16 __user *) arg)) | |
961 | return -EFAULT; | |
962 | ||
963 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
964 | return -EINVAL; | |
965 | ||
966 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
967 | ||
70f23020 AE |
968 | dl = kzalloc(size, GFP_KERNEL); |
969 | if (!dl) | |
1da177e4 LT |
970 | return -ENOMEM; |
971 | ||
972 | dr = dl->dev_req; | |
973 | ||
f20d09d5 | 974 | read_lock(&hci_dev_list_lock); |
8035ded4 | 975 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 976 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 977 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 978 | |
a8b2d5c2 JH |
979 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
980 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 981 | |
1da177e4 LT |
982 | (dr + n)->dev_id = hdev->id; |
983 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 984 | |
1da177e4 LT |
985 | if (++n >= dev_num) |
986 | break; | |
987 | } | |
f20d09d5 | 988 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
989 | |
990 | dl->dev_num = n; | |
991 | size = sizeof(*dl) + n * sizeof(*dr); | |
992 | ||
993 | err = copy_to_user(arg, dl, size); | |
994 | kfree(dl); | |
995 | ||
996 | return err ? -EFAULT : 0; | |
997 | } | |
998 | ||
999 | int hci_get_dev_info(void __user *arg) | |
1000 | { | |
1001 | struct hci_dev *hdev; | |
1002 | struct hci_dev_info di; | |
1003 | int err = 0; | |
1004 | ||
1005 | if (copy_from_user(&di, arg, sizeof(di))) | |
1006 | return -EFAULT; | |
1007 | ||
70f23020 AE |
1008 | hdev = hci_dev_get(di.dev_id); |
1009 | if (!hdev) | |
1da177e4 LT |
1010 | return -ENODEV; |
1011 | ||
a8b2d5c2 | 1012 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1013 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1014 | |
a8b2d5c2 JH |
1015 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1016 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1017 | |
1da177e4 LT |
1018 | strcpy(di.name, hdev->name); |
1019 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1020 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1021 | di.flags = hdev->flags; |
1022 | di.pkt_type = hdev->pkt_type; | |
1023 | di.acl_mtu = hdev->acl_mtu; | |
1024 | di.acl_pkts = hdev->acl_pkts; | |
1025 | di.sco_mtu = hdev->sco_mtu; | |
1026 | di.sco_pkts = hdev->sco_pkts; | |
1027 | di.link_policy = hdev->link_policy; | |
1028 | di.link_mode = hdev->link_mode; | |
1029 | ||
1030 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1031 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1032 | ||
1033 | if (copy_to_user(arg, &di, sizeof(di))) | |
1034 | err = -EFAULT; | |
1035 | ||
1036 | hci_dev_put(hdev); | |
1037 | ||
1038 | return err; | |
1039 | } | |
1040 | ||
1041 | /* ---- Interface to HCI drivers ---- */ | |
1042 | ||
611b30f7 MH |
1043 | static int hci_rfkill_set_block(void *data, bool blocked) |
1044 | { | |
1045 | struct hci_dev *hdev = data; | |
1046 | ||
1047 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1048 | ||
1049 | if (!blocked) | |
1050 | return 0; | |
1051 | ||
1052 | hci_dev_do_close(hdev); | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | static const struct rfkill_ops hci_rfkill_ops = { | |
1058 | .set_block = hci_rfkill_set_block, | |
1059 | }; | |
1060 | ||
1da177e4 LT |
1061 | /* Alloc HCI device */ |
1062 | struct hci_dev *hci_alloc_dev(void) | |
1063 | { | |
1064 | struct hci_dev *hdev; | |
1065 | ||
25ea6db0 | 1066 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
1da177e4 LT |
1067 | if (!hdev) |
1068 | return NULL; | |
1069 | ||
0ac7e700 | 1070 | hci_init_sysfs(hdev); |
1da177e4 LT |
1071 | skb_queue_head_init(&hdev->driver_init); |
1072 | ||
1073 | return hdev; | |
1074 | } | |
1075 | EXPORT_SYMBOL(hci_alloc_dev); | |
1076 | ||
1077 | /* Free HCI device */ | |
1078 | void hci_free_dev(struct hci_dev *hdev) | |
1079 | { | |
1080 | skb_queue_purge(&hdev->driver_init); | |
1081 | ||
a91f2e39 MH |
1082 | /* will free via device release */ |
1083 | put_device(&hdev->dev); | |
1da177e4 LT |
1084 | } |
1085 | EXPORT_SYMBOL(hci_free_dev); | |
1086 | ||
ab81cbf9 JH |
1087 | static void hci_power_on(struct work_struct *work) |
1088 | { | |
1089 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1090 | ||
1091 | BT_DBG("%s", hdev->name); | |
1092 | ||
1093 | if (hci_dev_open(hdev->id) < 0) | |
1094 | return; | |
1095 | ||
a8b2d5c2 | 1096 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
80b7ab33 | 1097 | schedule_delayed_work(&hdev->power_off, |
3243553f | 1098 | msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
ab81cbf9 | 1099 | |
a8b2d5c2 | 1100 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1101 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1102 | } |
1103 | ||
1104 | static void hci_power_off(struct work_struct *work) | |
1105 | { | |
3243553f JH |
1106 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1107 | power_off.work); | |
ab81cbf9 JH |
1108 | |
1109 | BT_DBG("%s", hdev->name); | |
1110 | ||
a8b2d5c2 | 1111 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ab81cbf9 | 1112 | |
3243553f | 1113 | hci_dev_close(hdev->id); |
ab81cbf9 JH |
1114 | } |
1115 | ||
16ab91ab JH |
1116 | static void hci_discov_off(struct work_struct *work) |
1117 | { | |
1118 | struct hci_dev *hdev; | |
1119 | u8 scan = SCAN_PAGE; | |
1120 | ||
1121 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1122 | ||
1123 | BT_DBG("%s", hdev->name); | |
1124 | ||
09fd0de5 | 1125 | hci_dev_lock(hdev); |
16ab91ab JH |
1126 | |
1127 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1128 | ||
1129 | hdev->discov_timeout = 0; | |
1130 | ||
09fd0de5 | 1131 | hci_dev_unlock(hdev); |
16ab91ab JH |
1132 | } |
1133 | ||
2aeb9a1a JH |
1134 | int hci_uuids_clear(struct hci_dev *hdev) |
1135 | { | |
1136 | struct list_head *p, *n; | |
1137 | ||
1138 | list_for_each_safe(p, n, &hdev->uuids) { | |
1139 | struct bt_uuid *uuid; | |
1140 | ||
1141 | uuid = list_entry(p, struct bt_uuid, list); | |
1142 | ||
1143 | list_del(p); | |
1144 | kfree(uuid); | |
1145 | } | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | ||
55ed8ca1 JH |
1150 | int hci_link_keys_clear(struct hci_dev *hdev) |
1151 | { | |
1152 | struct list_head *p, *n; | |
1153 | ||
1154 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1155 | struct link_key *key; | |
1156 | ||
1157 | key = list_entry(p, struct link_key, list); | |
1158 | ||
1159 | list_del(p); | |
1160 | kfree(key); | |
1161 | } | |
1162 | ||
1163 | return 0; | |
1164 | } | |
1165 | ||
b899efaf VCG |
1166 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1167 | { | |
1168 | struct smp_ltk *k, *tmp; | |
1169 | ||
1170 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1171 | list_del(&k->list); | |
1172 | kfree(k); | |
1173 | } | |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
55ed8ca1 JH |
1178 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1179 | { | |
8035ded4 | 1180 | struct link_key *k; |
55ed8ca1 | 1181 | |
8035ded4 | 1182 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1183 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1184 | return k; | |
55ed8ca1 JH |
1185 | |
1186 | return NULL; | |
1187 | } | |
1188 | ||
d25e28ab JH |
1189 | static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
1190 | u8 key_type, u8 old_key_type) | |
1191 | { | |
1192 | /* Legacy key */ | |
1193 | if (key_type < 0x03) | |
1194 | return 1; | |
1195 | ||
1196 | /* Debug keys are insecure so don't store them persistently */ | |
1197 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
1198 | return 0; | |
1199 | ||
1200 | /* Changed combination key and there's no previous one */ | |
1201 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
1202 | return 0; | |
1203 | ||
1204 | /* Security mode 3 case */ | |
1205 | if (!conn) | |
1206 | return 1; | |
1207 | ||
1208 | /* Neither local nor remote side had no-bonding as requirement */ | |
1209 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
1210 | return 1; | |
1211 | ||
1212 | /* Local side had dedicated bonding as requirement */ | |
1213 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
1214 | return 1; | |
1215 | ||
1216 | /* Remote side had dedicated bonding as requirement */ | |
1217 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
1218 | return 1; | |
1219 | ||
1220 | /* If none of the above criteria match, then don't store the key | |
1221 | * persistently */ | |
1222 | return 0; | |
1223 | } | |
1224 | ||
75d262c2 VCG |
1225 | struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
1226 | { | |
1227 | struct link_key *k; | |
1228 | ||
1229 | list_for_each_entry(k, &hdev->link_keys, list) { | |
1230 | struct key_master_id *id; | |
1231 | ||
1232 | if (k->type != HCI_LK_SMP_LTK) | |
1233 | continue; | |
1234 | ||
1235 | if (k->dlen != sizeof(*id)) | |
1236 | continue; | |
1237 | ||
1238 | id = (void *) &k->data; | |
1239 | if (id->ediv == ediv && | |
1240 | (memcmp(rand, id->rand, sizeof(id->rand)) == 0)) | |
1241 | return k; | |
1242 | } | |
1243 | ||
1244 | return NULL; | |
1245 | } | |
1246 | EXPORT_SYMBOL(hci_find_ltk); | |
1247 | ||
1248 | struct link_key *hci_find_link_key_type(struct hci_dev *hdev, | |
1249 | bdaddr_t *bdaddr, u8 type) | |
1250 | { | |
1251 | struct link_key *k; | |
1252 | ||
1253 | list_for_each_entry(k, &hdev->link_keys, list) | |
1254 | if (k->type == type && bacmp(bdaddr, &k->bdaddr) == 0) | |
1255 | return k; | |
1256 | ||
1257 | return NULL; | |
1258 | } | |
1259 | EXPORT_SYMBOL(hci_find_link_key_type); | |
1260 | ||
d25e28ab JH |
1261 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
1262 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) | |
55ed8ca1 JH |
1263 | { |
1264 | struct link_key *key, *old_key; | |
4df378a1 | 1265 | u8 old_key_type, persistent; |
55ed8ca1 JH |
1266 | |
1267 | old_key = hci_find_link_key(hdev, bdaddr); | |
1268 | if (old_key) { | |
1269 | old_key_type = old_key->type; | |
1270 | key = old_key; | |
1271 | } else { | |
12adcf3a | 1272 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1273 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1274 | if (!key) | |
1275 | return -ENOMEM; | |
1276 | list_add(&key->list, &hdev->link_keys); | |
1277 | } | |
1278 | ||
1279 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); | |
1280 | ||
d25e28ab JH |
1281 | /* Some buggy controller combinations generate a changed |
1282 | * combination key for legacy pairing even when there's no | |
1283 | * previous key */ | |
1284 | if (type == HCI_LK_CHANGED_COMBINATION && | |
1285 | (!conn || conn->remote_auth == 0xff) && | |
655fe6ec | 1286 | old_key_type == 0xff) { |
d25e28ab | 1287 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1288 | if (conn) |
1289 | conn->key_type = type; | |
1290 | } | |
d25e28ab | 1291 | |
55ed8ca1 JH |
1292 | bacpy(&key->bdaddr, bdaddr); |
1293 | memcpy(key->val, val, 16); | |
55ed8ca1 JH |
1294 | key->pin_len = pin_len; |
1295 | ||
b6020ba0 | 1296 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1297 | key->type = old_key_type; |
4748fed2 JH |
1298 | else |
1299 | key->type = type; | |
1300 | ||
4df378a1 JH |
1301 | if (!new_key) |
1302 | return 0; | |
1303 | ||
1304 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1305 | ||
744cf19e | 1306 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 JH |
1307 | |
1308 | if (!persistent) { | |
1309 | list_del(&key->list); | |
1310 | kfree(key); | |
1311 | } | |
55ed8ca1 JH |
1312 | |
1313 | return 0; | |
1314 | } | |
1315 | ||
75d262c2 | 1316 | int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr, |
726b4ffc | 1317 | u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]) |
75d262c2 VCG |
1318 | { |
1319 | struct link_key *key, *old_key; | |
1320 | struct key_master_id *id; | |
1321 | u8 old_key_type; | |
1322 | ||
1323 | BT_DBG("%s addr %s", hdev->name, batostr(bdaddr)); | |
1324 | ||
1325 | old_key = hci_find_link_key_type(hdev, bdaddr, HCI_LK_SMP_LTK); | |
1326 | if (old_key) { | |
1327 | key = old_key; | |
1328 | old_key_type = old_key->type; | |
1329 | } else { | |
1330 | key = kzalloc(sizeof(*key) + sizeof(*id), GFP_ATOMIC); | |
1331 | if (!key) | |
1332 | return -ENOMEM; | |
1333 | list_add(&key->list, &hdev->link_keys); | |
1334 | old_key_type = 0xff; | |
1335 | } | |
1336 | ||
1337 | key->dlen = sizeof(*id); | |
1338 | ||
1339 | bacpy(&key->bdaddr, bdaddr); | |
1340 | memcpy(key->val, ltk, sizeof(key->val)); | |
1341 | key->type = HCI_LK_SMP_LTK; | |
726b4ffc | 1342 | key->pin_len = key_size; |
75d262c2 VCG |
1343 | |
1344 | id = (void *) &key->data; | |
1345 | id->ediv = ediv; | |
1346 | memcpy(id->rand, rand, sizeof(id->rand)); | |
1347 | ||
1348 | if (new_key) | |
744cf19e | 1349 | mgmt_new_link_key(hdev, key, old_key_type); |
75d262c2 VCG |
1350 | |
1351 | return 0; | |
1352 | } | |
1353 | ||
55ed8ca1 JH |
1354 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1355 | { | |
1356 | struct link_key *key; | |
1357 | ||
1358 | key = hci_find_link_key(hdev, bdaddr); | |
1359 | if (!key) | |
1360 | return -ENOENT; | |
1361 | ||
1362 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1363 | ||
1364 | list_del(&key->list); | |
1365 | kfree(key); | |
1366 | ||
1367 | return 0; | |
1368 | } | |
1369 | ||
b899efaf VCG |
1370 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1371 | { | |
1372 | struct smp_ltk *k, *tmp; | |
1373 | ||
1374 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1375 | if (bacmp(bdaddr, &k->bdaddr)) | |
1376 | continue; | |
1377 | ||
1378 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1379 | ||
1380 | list_del(&k->list); | |
1381 | kfree(k); | |
1382 | } | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | ||
6bd32326 VT |
1387 | /* HCI command timer function */ |
1388 | static void hci_cmd_timer(unsigned long arg) | |
1389 | { | |
1390 | struct hci_dev *hdev = (void *) arg; | |
1391 | ||
1392 | BT_ERR("%s command tx timeout", hdev->name); | |
1393 | atomic_set(&hdev->cmd_cnt, 1); | |
c347b765 | 1394 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1395 | } |
1396 | ||
2763eda6 SJ |
1397 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
1398 | bdaddr_t *bdaddr) | |
1399 | { | |
1400 | struct oob_data *data; | |
1401 | ||
1402 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1403 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1404 | return data; | |
1405 | ||
1406 | return NULL; | |
1407 | } | |
1408 | ||
1409 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1410 | { | |
1411 | struct oob_data *data; | |
1412 | ||
1413 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1414 | if (!data) | |
1415 | return -ENOENT; | |
1416 | ||
1417 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1418 | ||
1419 | list_del(&data->list); | |
1420 | kfree(data); | |
1421 | ||
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1426 | { | |
1427 | struct oob_data *data, *n; | |
1428 | ||
1429 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1430 | list_del(&data->list); | |
1431 | kfree(data); | |
1432 | } | |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
1438 | u8 *randomizer) | |
1439 | { | |
1440 | struct oob_data *data; | |
1441 | ||
1442 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1443 | ||
1444 | if (!data) { | |
1445 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1446 | if (!data) | |
1447 | return -ENOMEM; | |
1448 | ||
1449 | bacpy(&data->bdaddr, bdaddr); | |
1450 | list_add(&data->list, &hdev->remote_oob_data); | |
1451 | } | |
1452 | ||
1453 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1454 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1455 | ||
1456 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
b2a66aad AJ |
1461 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
1462 | bdaddr_t *bdaddr) | |
1463 | { | |
8035ded4 | 1464 | struct bdaddr_list *b; |
b2a66aad | 1465 | |
8035ded4 | 1466 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1467 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1468 | return b; | |
b2a66aad AJ |
1469 | |
1470 | return NULL; | |
1471 | } | |
1472 | ||
1473 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1474 | { | |
1475 | struct list_head *p, *n; | |
1476 | ||
1477 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1478 | struct bdaddr_list *b; | |
1479 | ||
1480 | b = list_entry(p, struct bdaddr_list, list); | |
1481 | ||
1482 | list_del(p); | |
1483 | kfree(b); | |
1484 | } | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1490 | { | |
1491 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1492 | |
1493 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1494 | return -EBADF; | |
1495 | ||
5e762444 AJ |
1496 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1497 | return -EEXIST; | |
b2a66aad AJ |
1498 | |
1499 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1500 | if (!entry) |
1501 | return -ENOMEM; | |
b2a66aad AJ |
1502 | |
1503 | bacpy(&entry->bdaddr, bdaddr); | |
1504 | ||
1505 | list_add(&entry->list, &hdev->blacklist); | |
1506 | ||
744cf19e | 1507 | return mgmt_device_blocked(hdev, bdaddr); |
b2a66aad AJ |
1508 | } |
1509 | ||
1510 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1511 | { | |
1512 | struct bdaddr_list *entry; | |
b2a66aad | 1513 | |
1ec918ce | 1514 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1515 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1516 | |
1517 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1518 | if (!entry) |
5e762444 | 1519 | return -ENOENT; |
b2a66aad AJ |
1520 | |
1521 | list_del(&entry->list); | |
1522 | kfree(entry); | |
1523 | ||
744cf19e | 1524 | return mgmt_device_unblocked(hdev, bdaddr); |
b2a66aad AJ |
1525 | } |
1526 | ||
db323f2f | 1527 | static void hci_clear_adv_cache(struct work_struct *work) |
35815085 | 1528 | { |
db323f2f GP |
1529 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
1530 | adv_work.work); | |
35815085 AG |
1531 | |
1532 | hci_dev_lock(hdev); | |
1533 | ||
1534 | hci_adv_entries_clear(hdev); | |
1535 | ||
1536 | hci_dev_unlock(hdev); | |
1537 | } | |
1538 | ||
76c8686f AG |
1539 | int hci_adv_entries_clear(struct hci_dev *hdev) |
1540 | { | |
1541 | struct adv_entry *entry, *tmp; | |
1542 | ||
1543 | list_for_each_entry_safe(entry, tmp, &hdev->adv_entries, list) { | |
1544 | list_del(&entry->list); | |
1545 | kfree(entry); | |
1546 | } | |
1547 | ||
1548 | BT_DBG("%s adv cache cleared", hdev->name); | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1554 | { | |
1555 | struct adv_entry *entry; | |
1556 | ||
1557 | list_for_each_entry(entry, &hdev->adv_entries, list) | |
1558 | if (bacmp(bdaddr, &entry->bdaddr) == 0) | |
1559 | return entry; | |
1560 | ||
1561 | return NULL; | |
1562 | } | |
1563 | ||
1564 | static inline int is_connectable_adv(u8 evt_type) | |
1565 | { | |
1566 | if (evt_type == ADV_IND || evt_type == ADV_DIRECT_IND) | |
1567 | return 1; | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | int hci_add_adv_entry(struct hci_dev *hdev, | |
1573 | struct hci_ev_le_advertising_info *ev) | |
1574 | { | |
1575 | struct adv_entry *entry; | |
1576 | ||
1577 | if (!is_connectable_adv(ev->evt_type)) | |
1578 | return -EINVAL; | |
1579 | ||
1580 | /* Only new entries should be added to adv_entries. So, if | |
1581 | * bdaddr was found, don't add it. */ | |
1582 | if (hci_find_adv_entry(hdev, &ev->bdaddr)) | |
1583 | return 0; | |
1584 | ||
4777bfde | 1585 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
76c8686f AG |
1586 | if (!entry) |
1587 | return -ENOMEM; | |
1588 | ||
1589 | bacpy(&entry->bdaddr, &ev->bdaddr); | |
1590 | entry->bdaddr_type = ev->bdaddr_type; | |
1591 | ||
1592 | list_add(&entry->list, &hdev->adv_entries); | |
1593 | ||
1594 | BT_DBG("%s adv entry added: address %s type %u", hdev->name, | |
1595 | batostr(&entry->bdaddr), entry->bdaddr_type); | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
1da177e4 LT |
1600 | /* Register HCI device */ |
1601 | int hci_register_dev(struct hci_dev *hdev) | |
1602 | { | |
1603 | struct list_head *head = &hci_dev_list, *p; | |
08add513 | 1604 | int i, id, error; |
1da177e4 | 1605 | |
e9b9cfa1 | 1606 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1607 | |
010666a1 | 1608 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
1609 | return -EINVAL; |
1610 | ||
08add513 MM |
1611 | /* Do not allow HCI_AMP devices to register at index 0, |
1612 | * so the index can be used as the AMP controller ID. | |
1613 | */ | |
1614 | id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; | |
1615 | ||
f20d09d5 | 1616 | write_lock(&hci_dev_list_lock); |
1da177e4 LT |
1617 | |
1618 | /* Find first available device id */ | |
1619 | list_for_each(p, &hci_dev_list) { | |
1620 | if (list_entry(p, struct hci_dev, list)->id != id) | |
1621 | break; | |
1622 | head = p; id++; | |
1623 | } | |
8e87d142 | 1624 | |
1da177e4 LT |
1625 | sprintf(hdev->name, "hci%d", id); |
1626 | hdev->id = id; | |
c6feeb28 | 1627 | list_add_tail(&hdev->list, head); |
1da177e4 | 1628 | |
09fd0de5 | 1629 | mutex_init(&hdev->lock); |
1da177e4 LT |
1630 | |
1631 | hdev->flags = 0; | |
d23264a8 | 1632 | hdev->dev_flags = 0; |
1da177e4 | 1633 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
5b7f9909 | 1634 | hdev->esco_type = (ESCO_HV1); |
1da177e4 | 1635 | hdev->link_mode = (HCI_LM_ACCEPT); |
17fa4b9d | 1636 | hdev->io_capability = 0x03; /* No Input No Output */ |
1da177e4 | 1637 | |
04837f64 MH |
1638 | hdev->idle_timeout = 0; |
1639 | hdev->sniff_max_interval = 800; | |
1640 | hdev->sniff_min_interval = 80; | |
1641 | ||
b78752cc | 1642 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
c347b765 | 1643 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
3eff45ea | 1644 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
b78752cc | 1645 | |
1da177e4 LT |
1646 | |
1647 | skb_queue_head_init(&hdev->rx_q); | |
1648 | skb_queue_head_init(&hdev->cmd_q); | |
1649 | skb_queue_head_init(&hdev->raw_q); | |
1650 | ||
6bd32326 VT |
1651 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); |
1652 | ||
cd4c5391 | 1653 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1654 | hdev->reassembly[i] = NULL; |
1655 | ||
1da177e4 | 1656 | init_waitqueue_head(&hdev->req_wait_q); |
a6a67efd | 1657 | mutex_init(&hdev->req_lock); |
1da177e4 | 1658 | |
30883512 | 1659 | discovery_init(hdev); |
1da177e4 LT |
1660 | |
1661 | hci_conn_hash_init(hdev); | |
1662 | ||
2e58ef3e JH |
1663 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
1664 | ||
ea4bd8ba | 1665 | INIT_LIST_HEAD(&hdev->blacklist); |
f0358568 | 1666 | |
2aeb9a1a JH |
1667 | INIT_LIST_HEAD(&hdev->uuids); |
1668 | ||
55ed8ca1 | 1669 | INIT_LIST_HEAD(&hdev->link_keys); |
b899efaf | 1670 | INIT_LIST_HEAD(&hdev->long_term_keys); |
55ed8ca1 | 1671 | |
2763eda6 SJ |
1672 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
1673 | ||
76c8686f AG |
1674 | INIT_LIST_HEAD(&hdev->adv_entries); |
1675 | ||
db323f2f | 1676 | INIT_DELAYED_WORK(&hdev->adv_work, hci_clear_adv_cache); |
ab81cbf9 | 1677 | INIT_WORK(&hdev->power_on, hci_power_on); |
3243553f | 1678 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
ab81cbf9 | 1679 | |
16ab91ab JH |
1680 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
1681 | ||
1da177e4 LT |
1682 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1683 | ||
1684 | atomic_set(&hdev->promisc, 0); | |
1685 | ||
f20d09d5 | 1686 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1687 | |
32845eb1 GP |
1688 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
1689 | WQ_MEM_RECLAIM, 1); | |
33ca954d DH |
1690 | if (!hdev->workqueue) { |
1691 | error = -ENOMEM; | |
1692 | goto err; | |
1693 | } | |
f48fd9c8 | 1694 | |
33ca954d DH |
1695 | error = hci_add_sysfs(hdev); |
1696 | if (error < 0) | |
1697 | goto err_wqueue; | |
1da177e4 | 1698 | |
611b30f7 MH |
1699 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
1700 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); | |
1701 | if (hdev->rfkill) { | |
1702 | if (rfkill_register(hdev->rfkill) < 0) { | |
1703 | rfkill_destroy(hdev->rfkill); | |
1704 | hdev->rfkill = NULL; | |
1705 | } | |
1706 | } | |
1707 | ||
a8b2d5c2 JH |
1708 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1709 | set_bit(HCI_SETUP, &hdev->dev_flags); | |
7f971041 | 1710 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1711 | |
1da177e4 | 1712 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 1713 | hci_dev_hold(hdev); |
1da177e4 LT |
1714 | |
1715 | return id; | |
f48fd9c8 | 1716 | |
33ca954d DH |
1717 | err_wqueue: |
1718 | destroy_workqueue(hdev->workqueue); | |
1719 | err: | |
f20d09d5 | 1720 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1721 | list_del(&hdev->list); |
f20d09d5 | 1722 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1723 | |
33ca954d | 1724 | return error; |
1da177e4 LT |
1725 | } |
1726 | EXPORT_SYMBOL(hci_register_dev); | |
1727 | ||
1728 | /* Unregister HCI device */ | |
59735631 | 1729 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1730 | { |
ef222013 MH |
1731 | int i; |
1732 | ||
c13854ce | 1733 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1734 | |
f20d09d5 | 1735 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1736 | list_del(&hdev->list); |
f20d09d5 | 1737 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1738 | |
1739 | hci_dev_do_close(hdev); | |
1740 | ||
cd4c5391 | 1741 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1742 | kfree_skb(hdev->reassembly[i]); |
1743 | ||
ab81cbf9 | 1744 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8b2d5c2 | 1745 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 1746 | hci_dev_lock(hdev); |
744cf19e | 1747 | mgmt_index_removed(hdev); |
09fd0de5 | 1748 | hci_dev_unlock(hdev); |
56e5cb86 | 1749 | } |
ab81cbf9 | 1750 | |
2e58ef3e JH |
1751 | /* mgmt_index_removed should take care of emptying the |
1752 | * pending list */ | |
1753 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1754 | ||
1da177e4 LT |
1755 | hci_notify(hdev, HCI_DEV_UNREG); |
1756 | ||
611b30f7 MH |
1757 | if (hdev->rfkill) { |
1758 | rfkill_unregister(hdev->rfkill); | |
1759 | rfkill_destroy(hdev->rfkill); | |
1760 | } | |
1761 | ||
ce242970 | 1762 | hci_del_sysfs(hdev); |
147e2d59 | 1763 | |
db323f2f | 1764 | cancel_delayed_work_sync(&hdev->adv_work); |
c6f3c5f7 | 1765 | |
f48fd9c8 MH |
1766 | destroy_workqueue(hdev->workqueue); |
1767 | ||
09fd0de5 | 1768 | hci_dev_lock(hdev); |
e2e0cacb | 1769 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1770 | hci_uuids_clear(hdev); |
55ed8ca1 | 1771 | hci_link_keys_clear(hdev); |
b899efaf | 1772 | hci_smp_ltks_clear(hdev); |
2763eda6 | 1773 | hci_remote_oob_data_clear(hdev); |
76c8686f | 1774 | hci_adv_entries_clear(hdev); |
09fd0de5 | 1775 | hci_dev_unlock(hdev); |
e2e0cacb | 1776 | |
dc946bd8 | 1777 | hci_dev_put(hdev); |
1da177e4 LT |
1778 | } |
1779 | EXPORT_SYMBOL(hci_unregister_dev); | |
1780 | ||
1781 | /* Suspend HCI device */ | |
1782 | int hci_suspend_dev(struct hci_dev *hdev) | |
1783 | { | |
1784 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1785 | return 0; | |
1786 | } | |
1787 | EXPORT_SYMBOL(hci_suspend_dev); | |
1788 | ||
1789 | /* Resume HCI device */ | |
1790 | int hci_resume_dev(struct hci_dev *hdev) | |
1791 | { | |
1792 | hci_notify(hdev, HCI_DEV_RESUME); | |
1793 | return 0; | |
1794 | } | |
1795 | EXPORT_SYMBOL(hci_resume_dev); | |
1796 | ||
76bca880 MH |
1797 | /* Receive frame from HCI drivers */ |
1798 | int hci_recv_frame(struct sk_buff *skb) | |
1799 | { | |
1800 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1801 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
1802 | && !test_bit(HCI_INIT, &hdev->flags))) { | |
1803 | kfree_skb(skb); | |
1804 | return -ENXIO; | |
1805 | } | |
1806 | ||
1807 | /* Incomming skb */ | |
1808 | bt_cb(skb)->incoming = 1; | |
1809 | ||
1810 | /* Time stamp */ | |
1811 | __net_timestamp(skb); | |
1812 | ||
76bca880 | 1813 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1814 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1815 | |
76bca880 MH |
1816 | return 0; |
1817 | } | |
1818 | EXPORT_SYMBOL(hci_recv_frame); | |
1819 | ||
33e882a5 | 1820 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
1e429f38 | 1821 | int count, __u8 index) |
33e882a5 SS |
1822 | { |
1823 | int len = 0; | |
1824 | int hlen = 0; | |
1825 | int remain = count; | |
1826 | struct sk_buff *skb; | |
1827 | struct bt_skb_cb *scb; | |
1828 | ||
1829 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
1830 | index >= NUM_REASSEMBLY) | |
1831 | return -EILSEQ; | |
1832 | ||
1833 | skb = hdev->reassembly[index]; | |
1834 | ||
1835 | if (!skb) { | |
1836 | switch (type) { | |
1837 | case HCI_ACLDATA_PKT: | |
1838 | len = HCI_MAX_FRAME_SIZE; | |
1839 | hlen = HCI_ACL_HDR_SIZE; | |
1840 | break; | |
1841 | case HCI_EVENT_PKT: | |
1842 | len = HCI_MAX_EVENT_SIZE; | |
1843 | hlen = HCI_EVENT_HDR_SIZE; | |
1844 | break; | |
1845 | case HCI_SCODATA_PKT: | |
1846 | len = HCI_MAX_SCO_SIZE; | |
1847 | hlen = HCI_SCO_HDR_SIZE; | |
1848 | break; | |
1849 | } | |
1850 | ||
1e429f38 | 1851 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1852 | if (!skb) |
1853 | return -ENOMEM; | |
1854 | ||
1855 | scb = (void *) skb->cb; | |
1856 | scb->expect = hlen; | |
1857 | scb->pkt_type = type; | |
1858 | ||
1859 | skb->dev = (void *) hdev; | |
1860 | hdev->reassembly[index] = skb; | |
1861 | } | |
1862 | ||
1863 | while (count) { | |
1864 | scb = (void *) skb->cb; | |
1865 | len = min(scb->expect, (__u16)count); | |
1866 | ||
1867 | memcpy(skb_put(skb, len), data, len); | |
1868 | ||
1869 | count -= len; | |
1870 | data += len; | |
1871 | scb->expect -= len; | |
1872 | remain = count; | |
1873 | ||
1874 | switch (type) { | |
1875 | case HCI_EVENT_PKT: | |
1876 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1877 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1878 | scb->expect = h->plen; | |
1879 | ||
1880 | if (skb_tailroom(skb) < scb->expect) { | |
1881 | kfree_skb(skb); | |
1882 | hdev->reassembly[index] = NULL; | |
1883 | return -ENOMEM; | |
1884 | } | |
1885 | } | |
1886 | break; | |
1887 | ||
1888 | case HCI_ACLDATA_PKT: | |
1889 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1890 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1891 | scb->expect = __le16_to_cpu(h->dlen); | |
1892 | ||
1893 | if (skb_tailroom(skb) < scb->expect) { | |
1894 | kfree_skb(skb); | |
1895 | hdev->reassembly[index] = NULL; | |
1896 | return -ENOMEM; | |
1897 | } | |
1898 | } | |
1899 | break; | |
1900 | ||
1901 | case HCI_SCODATA_PKT: | |
1902 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1903 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1904 | scb->expect = h->dlen; | |
1905 | ||
1906 | if (skb_tailroom(skb) < scb->expect) { | |
1907 | kfree_skb(skb); | |
1908 | hdev->reassembly[index] = NULL; | |
1909 | return -ENOMEM; | |
1910 | } | |
1911 | } | |
1912 | break; | |
1913 | } | |
1914 | ||
1915 | if (scb->expect == 0) { | |
1916 | /* Complete frame */ | |
1917 | ||
1918 | bt_cb(skb)->pkt_type = type; | |
1919 | hci_recv_frame(skb); | |
1920 | ||
1921 | hdev->reassembly[index] = NULL; | |
1922 | return remain; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | return remain; | |
1927 | } | |
1928 | ||
ef222013 MH |
1929 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1930 | { | |
f39a3c06 SS |
1931 | int rem = 0; |
1932 | ||
ef222013 MH |
1933 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1934 | return -EILSEQ; | |
1935 | ||
da5f6c37 | 1936 | while (count) { |
1e429f38 | 1937 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
1938 | if (rem < 0) |
1939 | return rem; | |
ef222013 | 1940 | |
f39a3c06 SS |
1941 | data += (count - rem); |
1942 | count = rem; | |
f81c6224 | 1943 | } |
ef222013 | 1944 | |
f39a3c06 | 1945 | return rem; |
ef222013 MH |
1946 | } |
1947 | EXPORT_SYMBOL(hci_recv_fragment); | |
1948 | ||
99811510 SS |
1949 | #define STREAM_REASSEMBLY 0 |
1950 | ||
1951 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
1952 | { | |
1953 | int type; | |
1954 | int rem = 0; | |
1955 | ||
da5f6c37 | 1956 | while (count) { |
99811510 SS |
1957 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
1958 | ||
1959 | if (!skb) { | |
1960 | struct { char type; } *pkt; | |
1961 | ||
1962 | /* Start of the frame */ | |
1963 | pkt = data; | |
1964 | type = pkt->type; | |
1965 | ||
1966 | data++; | |
1967 | count--; | |
1968 | } else | |
1969 | type = bt_cb(skb)->pkt_type; | |
1970 | ||
1e429f38 GP |
1971 | rem = hci_reassembly(hdev, type, data, count, |
1972 | STREAM_REASSEMBLY); | |
99811510 SS |
1973 | if (rem < 0) |
1974 | return rem; | |
1975 | ||
1976 | data += (count - rem); | |
1977 | count = rem; | |
f81c6224 | 1978 | } |
99811510 SS |
1979 | |
1980 | return rem; | |
1981 | } | |
1982 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
1983 | ||
1da177e4 LT |
1984 | /* ---- Interface to upper protocols ---- */ |
1985 | ||
1da177e4 LT |
1986 | int hci_register_cb(struct hci_cb *cb) |
1987 | { | |
1988 | BT_DBG("%p name %s", cb, cb->name); | |
1989 | ||
f20d09d5 | 1990 | write_lock(&hci_cb_list_lock); |
1da177e4 | 1991 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 1992 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
1993 | |
1994 | return 0; | |
1995 | } | |
1996 | EXPORT_SYMBOL(hci_register_cb); | |
1997 | ||
1998 | int hci_unregister_cb(struct hci_cb *cb) | |
1999 | { | |
2000 | BT_DBG("%p name %s", cb, cb->name); | |
2001 | ||
f20d09d5 | 2002 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2003 | list_del(&cb->list); |
f20d09d5 | 2004 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2005 | |
2006 | return 0; | |
2007 | } | |
2008 | EXPORT_SYMBOL(hci_unregister_cb); | |
2009 | ||
2010 | static int hci_send_frame(struct sk_buff *skb) | |
2011 | { | |
2012 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2013 | ||
2014 | if (!hdev) { | |
2015 | kfree_skb(skb); | |
2016 | return -ENODEV; | |
2017 | } | |
2018 | ||
0d48d939 | 2019 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
2020 | |
2021 | if (atomic_read(&hdev->promisc)) { | |
2022 | /* Time stamp */ | |
a61bbcf2 | 2023 | __net_timestamp(skb); |
1da177e4 | 2024 | |
eec8d2bc | 2025 | hci_send_to_sock(hdev, skb, NULL); |
1da177e4 LT |
2026 | } |
2027 | ||
2028 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2029 | skb_orphan(skb); | |
2030 | ||
2031 | return hdev->send(skb); | |
2032 | } | |
2033 | ||
2034 | /* Send HCI command */ | |
a9de9248 | 2035 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
2036 | { |
2037 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2038 | struct hci_command_hdr *hdr; | |
2039 | struct sk_buff *skb; | |
2040 | ||
a9de9248 | 2041 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
2042 | |
2043 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
2044 | if (!skb) { | |
ef222013 | 2045 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
2046 | return -ENOMEM; |
2047 | } | |
2048 | ||
2049 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2050 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2051 | hdr->plen = plen; |
2052 | ||
2053 | if (plen) | |
2054 | memcpy(skb_put(skb, plen), param, plen); | |
2055 | ||
2056 | BT_DBG("skb len %d", skb->len); | |
2057 | ||
0d48d939 | 2058 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2059 | skb->dev = (void *) hdev; |
c78ae283 | 2060 | |
a5040efa JH |
2061 | if (test_bit(HCI_INIT, &hdev->flags)) |
2062 | hdev->init_last_cmd = opcode; | |
2063 | ||
1da177e4 | 2064 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2065 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2066 | |
2067 | return 0; | |
2068 | } | |
1da177e4 LT |
2069 | |
2070 | /* Get data from the previously sent command */ | |
a9de9248 | 2071 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2072 | { |
2073 | struct hci_command_hdr *hdr; | |
2074 | ||
2075 | if (!hdev->sent_cmd) | |
2076 | return NULL; | |
2077 | ||
2078 | hdr = (void *) hdev->sent_cmd->data; | |
2079 | ||
a9de9248 | 2080 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2081 | return NULL; |
2082 | ||
a9de9248 | 2083 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
1da177e4 LT |
2084 | |
2085 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2086 | } | |
2087 | ||
2088 | /* Send ACL data */ | |
2089 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2090 | { | |
2091 | struct hci_acl_hdr *hdr; | |
2092 | int len = skb->len; | |
2093 | ||
badff6d0 ACM |
2094 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2095 | skb_reset_transport_header(skb); | |
9c70220b | 2096 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2097 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2098 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2099 | } |
2100 | ||
73d80deb LAD |
2101 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
2102 | struct sk_buff *skb, __u16 flags) | |
1da177e4 LT |
2103 | { |
2104 | struct hci_dev *hdev = conn->hdev; | |
2105 | struct sk_buff *list; | |
2106 | ||
70f23020 AE |
2107 | list = skb_shinfo(skb)->frag_list; |
2108 | if (!list) { | |
1da177e4 LT |
2109 | /* Non fragmented */ |
2110 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2111 | ||
73d80deb | 2112 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2113 | } else { |
2114 | /* Fragmented */ | |
2115 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2116 | ||
2117 | skb_shinfo(skb)->frag_list = NULL; | |
2118 | ||
2119 | /* Queue all fragments atomically */ | |
af3e6359 | 2120 | spin_lock(&queue->lock); |
1da177e4 | 2121 | |
73d80deb | 2122 | __skb_queue_tail(queue, skb); |
e702112f AE |
2123 | |
2124 | flags &= ~ACL_START; | |
2125 | flags |= ACL_CONT; | |
1da177e4 LT |
2126 | do { |
2127 | skb = list; list = list->next; | |
8e87d142 | 2128 | |
1da177e4 | 2129 | skb->dev = (void *) hdev; |
0d48d939 | 2130 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2131 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2132 | |
2133 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2134 | ||
73d80deb | 2135 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2136 | } while (list); |
2137 | ||
af3e6359 | 2138 | spin_unlock(&queue->lock); |
1da177e4 | 2139 | } |
73d80deb LAD |
2140 | } |
2141 | ||
2142 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2143 | { | |
2144 | struct hci_conn *conn = chan->conn; | |
2145 | struct hci_dev *hdev = conn->hdev; | |
2146 | ||
2147 | BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); | |
2148 | ||
2149 | skb->dev = (void *) hdev; | |
2150 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
2151 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2152 | ||
2153 | hci_queue_acl(conn, &chan->data_q, skb, flags); | |
1da177e4 | 2154 | |
3eff45ea | 2155 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2156 | } |
2157 | EXPORT_SYMBOL(hci_send_acl); | |
2158 | ||
2159 | /* Send SCO data */ | |
0d861d8b | 2160 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2161 | { |
2162 | struct hci_dev *hdev = conn->hdev; | |
2163 | struct hci_sco_hdr hdr; | |
2164 | ||
2165 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2166 | ||
aca3192c | 2167 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2168 | hdr.dlen = skb->len; |
2169 | ||
badff6d0 ACM |
2170 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2171 | skb_reset_transport_header(skb); | |
9c70220b | 2172 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2173 | |
2174 | skb->dev = (void *) hdev; | |
0d48d939 | 2175 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2176 | |
1da177e4 | 2177 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2178 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2179 | } |
2180 | EXPORT_SYMBOL(hci_send_sco); | |
2181 | ||
2182 | /* ---- HCI TX task (outgoing data) ---- */ | |
2183 | ||
2184 | /* HCI Connection scheduler */ | |
2185 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) | |
2186 | { | |
2187 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2188 | struct hci_conn *conn = NULL, *c; |
1da177e4 | 2189 | int num = 0, min = ~0; |
1da177e4 | 2190 | |
8e87d142 | 2191 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2192 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2193 | |
2194 | rcu_read_lock(); | |
2195 | ||
2196 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2197 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2198 | continue; |
769be974 MH |
2199 | |
2200 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2201 | continue; | |
2202 | ||
1da177e4 LT |
2203 | num++; |
2204 | ||
2205 | if (c->sent < min) { | |
2206 | min = c->sent; | |
2207 | conn = c; | |
2208 | } | |
52087a79 LAD |
2209 | |
2210 | if (hci_conn_num(hdev, type) == num) | |
2211 | break; | |
1da177e4 LT |
2212 | } |
2213 | ||
bf4c6325 GP |
2214 | rcu_read_unlock(); |
2215 | ||
1da177e4 | 2216 | if (conn) { |
6ed58ec5 VT |
2217 | int cnt, q; |
2218 | ||
2219 | switch (conn->type) { | |
2220 | case ACL_LINK: | |
2221 | cnt = hdev->acl_cnt; | |
2222 | break; | |
2223 | case SCO_LINK: | |
2224 | case ESCO_LINK: | |
2225 | cnt = hdev->sco_cnt; | |
2226 | break; | |
2227 | case LE_LINK: | |
2228 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2229 | break; | |
2230 | default: | |
2231 | cnt = 0; | |
2232 | BT_ERR("Unknown link type"); | |
2233 | } | |
2234 | ||
2235 | q = cnt / num; | |
1da177e4 LT |
2236 | *quote = q ? q : 1; |
2237 | } else | |
2238 | *quote = 0; | |
2239 | ||
2240 | BT_DBG("conn %p quote %d", conn, *quote); | |
2241 | return conn; | |
2242 | } | |
2243 | ||
bae1f5d9 | 2244 | static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2245 | { |
2246 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2247 | struct hci_conn *c; |
1da177e4 | 2248 | |
bae1f5d9 | 2249 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2250 | |
bf4c6325 GP |
2251 | rcu_read_lock(); |
2252 | ||
1da177e4 | 2253 | /* Kill stalled connections */ |
bf4c6325 | 2254 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 VT |
2255 | if (c->type == type && c->sent) { |
2256 | BT_ERR("%s killing stalled connection %s", | |
1da177e4 LT |
2257 | hdev->name, batostr(&c->dst)); |
2258 | hci_acl_disconn(c, 0x13); | |
2259 | } | |
2260 | } | |
bf4c6325 GP |
2261 | |
2262 | rcu_read_unlock(); | |
1da177e4 LT |
2263 | } |
2264 | ||
73d80deb LAD |
2265 | static inline struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2266 | int *quote) | |
1da177e4 | 2267 | { |
73d80deb LAD |
2268 | struct hci_conn_hash *h = &hdev->conn_hash; |
2269 | struct hci_chan *chan = NULL; | |
2270 | int num = 0, min = ~0, cur_prio = 0; | |
1da177e4 | 2271 | struct hci_conn *conn; |
73d80deb LAD |
2272 | int cnt, q, conn_num = 0; |
2273 | ||
2274 | BT_DBG("%s", hdev->name); | |
2275 | ||
bf4c6325 GP |
2276 | rcu_read_lock(); |
2277 | ||
2278 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2279 | struct hci_chan *tmp; |
2280 | ||
2281 | if (conn->type != type) | |
2282 | continue; | |
2283 | ||
2284 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2285 | continue; | |
2286 | ||
2287 | conn_num++; | |
2288 | ||
8192edef | 2289 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2290 | struct sk_buff *skb; |
2291 | ||
2292 | if (skb_queue_empty(&tmp->data_q)) | |
2293 | continue; | |
2294 | ||
2295 | skb = skb_peek(&tmp->data_q); | |
2296 | if (skb->priority < cur_prio) | |
2297 | continue; | |
2298 | ||
2299 | if (skb->priority > cur_prio) { | |
2300 | num = 0; | |
2301 | min = ~0; | |
2302 | cur_prio = skb->priority; | |
2303 | } | |
2304 | ||
2305 | num++; | |
2306 | ||
2307 | if (conn->sent < min) { | |
2308 | min = conn->sent; | |
2309 | chan = tmp; | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | if (hci_conn_num(hdev, type) == conn_num) | |
2314 | break; | |
2315 | } | |
2316 | ||
bf4c6325 GP |
2317 | rcu_read_unlock(); |
2318 | ||
73d80deb LAD |
2319 | if (!chan) |
2320 | return NULL; | |
2321 | ||
2322 | switch (chan->conn->type) { | |
2323 | case ACL_LINK: | |
2324 | cnt = hdev->acl_cnt; | |
2325 | break; | |
2326 | case SCO_LINK: | |
2327 | case ESCO_LINK: | |
2328 | cnt = hdev->sco_cnt; | |
2329 | break; | |
2330 | case LE_LINK: | |
2331 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2332 | break; | |
2333 | default: | |
2334 | cnt = 0; | |
2335 | BT_ERR("Unknown link type"); | |
2336 | } | |
2337 | ||
2338 | q = cnt / num; | |
2339 | *quote = q ? q : 1; | |
2340 | BT_DBG("chan %p quote %d", chan, *quote); | |
2341 | return chan; | |
2342 | } | |
2343 | ||
02b20f0b LAD |
2344 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2345 | { | |
2346 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2347 | struct hci_conn *conn; | |
2348 | int num = 0; | |
2349 | ||
2350 | BT_DBG("%s", hdev->name); | |
2351 | ||
bf4c6325 GP |
2352 | rcu_read_lock(); |
2353 | ||
2354 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2355 | struct hci_chan *chan; |
2356 | ||
2357 | if (conn->type != type) | |
2358 | continue; | |
2359 | ||
2360 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2361 | continue; | |
2362 | ||
2363 | num++; | |
2364 | ||
8192edef | 2365 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2366 | struct sk_buff *skb; |
2367 | ||
2368 | if (chan->sent) { | |
2369 | chan->sent = 0; | |
2370 | continue; | |
2371 | } | |
2372 | ||
2373 | if (skb_queue_empty(&chan->data_q)) | |
2374 | continue; | |
2375 | ||
2376 | skb = skb_peek(&chan->data_q); | |
2377 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2378 | continue; | |
2379 | ||
2380 | skb->priority = HCI_PRIO_MAX - 1; | |
2381 | ||
2382 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
2383 | skb->priority); | |
2384 | } | |
2385 | ||
2386 | if (hci_conn_num(hdev, type) == num) | |
2387 | break; | |
2388 | } | |
bf4c6325 GP |
2389 | |
2390 | rcu_read_unlock(); | |
2391 | ||
02b20f0b LAD |
2392 | } |
2393 | ||
73d80deb LAD |
2394 | static inline void hci_sched_acl(struct hci_dev *hdev) |
2395 | { | |
2396 | struct hci_chan *chan; | |
1da177e4 LT |
2397 | struct sk_buff *skb; |
2398 | int quote; | |
73d80deb | 2399 | unsigned int cnt; |
1da177e4 LT |
2400 | |
2401 | BT_DBG("%s", hdev->name); | |
2402 | ||
52087a79 LAD |
2403 | if (!hci_conn_num(hdev, ACL_LINK)) |
2404 | return; | |
2405 | ||
1da177e4 LT |
2406 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2407 | /* ACL tx timeout must be longer than maximum | |
2408 | * link supervision timeout (40.9 seconds) */ | |
cc48dc0a AE |
2409 | if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + |
2410 | msecs_to_jiffies(HCI_ACL_TX_TIMEOUT))) | |
bae1f5d9 | 2411 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 LT |
2412 | } |
2413 | ||
73d80deb | 2414 | cnt = hdev->acl_cnt; |
04837f64 | 2415 | |
73d80deb LAD |
2416 | while (hdev->acl_cnt && |
2417 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { | |
ec1cce24 LAD |
2418 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2419 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb LAD |
2420 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
2421 | skb->len, skb->priority); | |
2422 | ||
ec1cce24 LAD |
2423 | /* Stop if priority has changed */ |
2424 | if (skb->priority < priority) | |
2425 | break; | |
2426 | ||
2427 | skb = skb_dequeue(&chan->data_q); | |
2428 | ||
73d80deb LAD |
2429 | hci_conn_enter_active_mode(chan->conn, |
2430 | bt_cb(skb)->force_active); | |
04837f64 | 2431 | |
1da177e4 LT |
2432 | hci_send_frame(skb); |
2433 | hdev->acl_last_tx = jiffies; | |
2434 | ||
2435 | hdev->acl_cnt--; | |
73d80deb LAD |
2436 | chan->sent++; |
2437 | chan->conn->sent++; | |
1da177e4 LT |
2438 | } |
2439 | } | |
02b20f0b LAD |
2440 | |
2441 | if (cnt != hdev->acl_cnt) | |
2442 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2443 | } |
2444 | ||
2445 | /* Schedule SCO */ | |
2446 | static inline void hci_sched_sco(struct hci_dev *hdev) | |
2447 | { | |
2448 | struct hci_conn *conn; | |
2449 | struct sk_buff *skb; | |
2450 | int quote; | |
2451 | ||
2452 | BT_DBG("%s", hdev->name); | |
2453 | ||
52087a79 LAD |
2454 | if (!hci_conn_num(hdev, SCO_LINK)) |
2455 | return; | |
2456 | ||
1da177e4 LT |
2457 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2458 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2459 | BT_DBG("skb %p len %d", skb, skb->len); | |
2460 | hci_send_frame(skb); | |
2461 | ||
2462 | conn->sent++; | |
2463 | if (conn->sent == ~0) | |
2464 | conn->sent = 0; | |
2465 | } | |
2466 | } | |
2467 | } | |
2468 | ||
b6a0dc82 MH |
2469 | static inline void hci_sched_esco(struct hci_dev *hdev) |
2470 | { | |
2471 | struct hci_conn *conn; | |
2472 | struct sk_buff *skb; | |
2473 | int quote; | |
2474 | ||
2475 | BT_DBG("%s", hdev->name); | |
2476 | ||
52087a79 LAD |
2477 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2478 | return; | |
2479 | ||
b6a0dc82 MH |
2480 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
2481 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2482 | BT_DBG("skb %p len %d", skb, skb->len); | |
2483 | hci_send_frame(skb); | |
2484 | ||
2485 | conn->sent++; | |
2486 | if (conn->sent == ~0) | |
2487 | conn->sent = 0; | |
2488 | } | |
2489 | } | |
2490 | } | |
2491 | ||
6ed58ec5 VT |
2492 | static inline void hci_sched_le(struct hci_dev *hdev) |
2493 | { | |
73d80deb | 2494 | struct hci_chan *chan; |
6ed58ec5 | 2495 | struct sk_buff *skb; |
02b20f0b | 2496 | int quote, cnt, tmp; |
6ed58ec5 VT |
2497 | |
2498 | BT_DBG("%s", hdev->name); | |
2499 | ||
52087a79 LAD |
2500 | if (!hci_conn_num(hdev, LE_LINK)) |
2501 | return; | |
2502 | ||
6ed58ec5 VT |
2503 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2504 | /* LE tx timeout must be longer than maximum | |
2505 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2506 | if (!hdev->le_cnt && hdev->le_pkts && |
6ed58ec5 | 2507 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2508 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2509 | } |
2510 | ||
2511 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2512 | tmp = cnt; |
73d80deb | 2513 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2514 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2515 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb LAD |
2516 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
2517 | skb->len, skb->priority); | |
6ed58ec5 | 2518 | |
ec1cce24 LAD |
2519 | /* Stop if priority has changed */ |
2520 | if (skb->priority < priority) | |
2521 | break; | |
2522 | ||
2523 | skb = skb_dequeue(&chan->data_q); | |
2524 | ||
6ed58ec5 VT |
2525 | hci_send_frame(skb); |
2526 | hdev->le_last_tx = jiffies; | |
2527 | ||
2528 | cnt--; | |
73d80deb LAD |
2529 | chan->sent++; |
2530 | chan->conn->sent++; | |
6ed58ec5 VT |
2531 | } |
2532 | } | |
73d80deb | 2533 | |
6ed58ec5 VT |
2534 | if (hdev->le_pkts) |
2535 | hdev->le_cnt = cnt; | |
2536 | else | |
2537 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2538 | |
2539 | if (cnt != tmp) | |
2540 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2541 | } |
2542 | ||
3eff45ea | 2543 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2544 | { |
3eff45ea | 2545 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2546 | struct sk_buff *skb; |
2547 | ||
6ed58ec5 VT |
2548 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
2549 | hdev->sco_cnt, hdev->le_cnt); | |
1da177e4 LT |
2550 | |
2551 | /* Schedule queues and send stuff to HCI driver */ | |
2552 | ||
2553 | hci_sched_acl(hdev); | |
2554 | ||
2555 | hci_sched_sco(hdev); | |
2556 | ||
b6a0dc82 MH |
2557 | hci_sched_esco(hdev); |
2558 | ||
6ed58ec5 VT |
2559 | hci_sched_le(hdev); |
2560 | ||
1da177e4 LT |
2561 | /* Send next queued raw (unknown type) packet */ |
2562 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2563 | hci_send_frame(skb); | |
1da177e4 LT |
2564 | } |
2565 | ||
25985edc | 2566 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2567 | |
2568 | /* ACL data packet */ | |
2569 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2570 | { | |
2571 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2572 | struct hci_conn *conn; | |
2573 | __u16 handle, flags; | |
2574 | ||
2575 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2576 | ||
2577 | handle = __le16_to_cpu(hdr->handle); | |
2578 | flags = hci_flags(handle); | |
2579 | handle = hci_handle(handle); | |
2580 | ||
2581 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); | |
2582 | ||
2583 | hdev->stat.acl_rx++; | |
2584 | ||
2585 | hci_dev_lock(hdev); | |
2586 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2587 | hci_dev_unlock(hdev); | |
8e87d142 | 2588 | |
1da177e4 | 2589 | if (conn) { |
65983fc7 | 2590 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2591 | |
1da177e4 | 2592 | /* Send to upper protocol */ |
686ebf28 UF |
2593 | l2cap_recv_acldata(conn, skb, flags); |
2594 | return; | |
1da177e4 | 2595 | } else { |
8e87d142 | 2596 | BT_ERR("%s ACL packet for unknown connection handle %d", |
1da177e4 LT |
2597 | hdev->name, handle); |
2598 | } | |
2599 | ||
2600 | kfree_skb(skb); | |
2601 | } | |
2602 | ||
2603 | /* SCO data packet */ | |
2604 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2605 | { | |
2606 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2607 | struct hci_conn *conn; | |
2608 | __u16 handle; | |
2609 | ||
2610 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2611 | ||
2612 | handle = __le16_to_cpu(hdr->handle); | |
2613 | ||
2614 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); | |
2615 | ||
2616 | hdev->stat.sco_rx++; | |
2617 | ||
2618 | hci_dev_lock(hdev); | |
2619 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2620 | hci_dev_unlock(hdev); | |
2621 | ||
2622 | if (conn) { | |
1da177e4 | 2623 | /* Send to upper protocol */ |
686ebf28 UF |
2624 | sco_recv_scodata(conn, skb); |
2625 | return; | |
1da177e4 | 2626 | } else { |
8e87d142 | 2627 | BT_ERR("%s SCO packet for unknown connection handle %d", |
1da177e4 LT |
2628 | hdev->name, handle); |
2629 | } | |
2630 | ||
2631 | kfree_skb(skb); | |
2632 | } | |
2633 | ||
b78752cc | 2634 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2635 | { |
b78752cc | 2636 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2637 | struct sk_buff *skb; |
2638 | ||
2639 | BT_DBG("%s", hdev->name); | |
2640 | ||
1da177e4 LT |
2641 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
2642 | if (atomic_read(&hdev->promisc)) { | |
2643 | /* Send copy to the sockets */ | |
eec8d2bc | 2644 | hci_send_to_sock(hdev, skb, NULL); |
1da177e4 LT |
2645 | } |
2646 | ||
2647 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2648 | kfree_skb(skb); | |
2649 | continue; | |
2650 | } | |
2651 | ||
2652 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2653 | /* Don't process data packets in this states. */ | |
0d48d939 | 2654 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2655 | case HCI_ACLDATA_PKT: |
2656 | case HCI_SCODATA_PKT: | |
2657 | kfree_skb(skb); | |
2658 | continue; | |
3ff50b79 | 2659 | } |
1da177e4 LT |
2660 | } |
2661 | ||
2662 | /* Process frame */ | |
0d48d939 | 2663 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2664 | case HCI_EVENT_PKT: |
b78752cc | 2665 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2666 | hci_event_packet(hdev, skb); |
2667 | break; | |
2668 | ||
2669 | case HCI_ACLDATA_PKT: | |
2670 | BT_DBG("%s ACL data packet", hdev->name); | |
2671 | hci_acldata_packet(hdev, skb); | |
2672 | break; | |
2673 | ||
2674 | case HCI_SCODATA_PKT: | |
2675 | BT_DBG("%s SCO data packet", hdev->name); | |
2676 | hci_scodata_packet(hdev, skb); | |
2677 | break; | |
2678 | ||
2679 | default: | |
2680 | kfree_skb(skb); | |
2681 | break; | |
2682 | } | |
2683 | } | |
1da177e4 LT |
2684 | } |
2685 | ||
c347b765 | 2686 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2687 | { |
c347b765 | 2688 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2689 | struct sk_buff *skb; |
2690 | ||
2691 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); | |
2692 | ||
1da177e4 | 2693 | /* Send queued commands */ |
5a08ecce AE |
2694 | if (atomic_read(&hdev->cmd_cnt)) { |
2695 | skb = skb_dequeue(&hdev->cmd_q); | |
2696 | if (!skb) | |
2697 | return; | |
2698 | ||
7585b97a | 2699 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2700 | |
70f23020 AE |
2701 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2702 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2703 | atomic_dec(&hdev->cmd_cnt); |
2704 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2705 | if (test_bit(HCI_RESET, &hdev->flags)) |
2706 | del_timer(&hdev->cmd_timer); | |
2707 | else | |
2708 | mod_timer(&hdev->cmd_timer, | |
6bd32326 | 2709 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
1da177e4 LT |
2710 | } else { |
2711 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2712 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2713 | } |
2714 | } | |
2715 | } | |
2519a1fc AG |
2716 | |
2717 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2718 | { | |
2719 | /* General inquiry access code (GIAC) */ | |
2720 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2721 | struct hci_cp_inquiry cp; | |
2722 | ||
2723 | BT_DBG("%s", hdev->name); | |
2724 | ||
2725 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2726 | return -EINPROGRESS; | |
2727 | ||
4663262c JH |
2728 | inquiry_cache_flush(hdev); |
2729 | ||
2519a1fc AG |
2730 | memset(&cp, 0, sizeof(cp)); |
2731 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2732 | cp.length = length; | |
2733 | ||
2734 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2735 | } | |
023d5049 AG |
2736 | |
2737 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2738 | { | |
2739 | BT_DBG("%s", hdev->name); | |
2740 | ||
2741 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
2742 | return -EPERM; | |
2743 | ||
2744 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2745 | } | |
7784d78f AE |
2746 | |
2747 | module_param(enable_hs, bool, 0644); | |
2748 | MODULE_PARM_DESC(enable_hs, "Enable High Speed"); |