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 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
1da177e4 | 30 | |
8c520a59 | 31 | #include <linux/rfkill.h> |
1da177e4 LT |
32 | |
33 | #include <net/bluetooth/bluetooth.h> | |
34 | #include <net/bluetooth/hci_core.h> | |
35 | ||
b78752cc | 36 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 37 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 38 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* HCI device list */ |
41 | LIST_HEAD(hci_dev_list); | |
42 | DEFINE_RWLOCK(hci_dev_list_lock); | |
43 | ||
44 | /* HCI callback list */ | |
45 | LIST_HEAD(hci_cb_list); | |
46 | DEFINE_RWLOCK(hci_cb_list_lock); | |
47 | ||
3df92b31 SL |
48 | /* HCI ID Numbering */ |
49 | static DEFINE_IDA(hci_index_ida); | |
50 | ||
1da177e4 LT |
51 | /* ---- HCI notifications ---- */ |
52 | ||
6516455d | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 54 | { |
040030ef | 55 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* ---- HCI requests ---- */ | |
59 | ||
23bb5763 | 60 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
1da177e4 | 61 | { |
f0e09510 | 62 | BT_DBG("%s command 0x%4.4x result 0x%2.2x", hdev->name, cmd, result); |
23bb5763 | 63 | |
a5040efa JH |
64 | /* If this is the init phase check if the completed command matches |
65 | * the last init command, and if not just return. | |
66 | */ | |
75fb0e32 JH |
67 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
68 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1036b890 | 69 | u16 opcode = __le16_to_cpu(sent->opcode); |
75fb0e32 JH |
70 | struct sk_buff *skb; |
71 | ||
72 | /* Some CSR based controllers generate a spontaneous | |
73 | * reset complete event during init and any pending | |
74 | * command will never be completed. In such a case we | |
75 | * need to resend whatever was the last sent | |
76 | * command. | |
77 | */ | |
78 | ||
1036b890 | 79 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
75fb0e32 JH |
80 | return; |
81 | ||
82 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); | |
83 | if (skb) { | |
84 | skb_queue_head(&hdev->cmd_q, skb); | |
85 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
86 | } | |
87 | ||
23bb5763 | 88 | return; |
75fb0e32 | 89 | } |
1da177e4 LT |
90 | |
91 | if (hdev->req_status == HCI_REQ_PEND) { | |
92 | hdev->req_result = result; | |
93 | hdev->req_status = HCI_REQ_DONE; | |
94 | wake_up_interruptible(&hdev->req_wait_q); | |
95 | } | |
96 | } | |
97 | ||
98 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
99 | { | |
100 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
101 | ||
102 | if (hdev->req_status == HCI_REQ_PEND) { | |
103 | hdev->req_result = err; | |
104 | hdev->req_status = HCI_REQ_CANCELED; | |
105 | wake_up_interruptible(&hdev->req_wait_q); | |
106 | } | |
107 | } | |
108 | ||
109 | /* Execute request and wait for completion. */ | |
a8c5fb1a GP |
110 | static int __hci_request(struct hci_dev *hdev, |
111 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
112 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
113 | { |
114 | DECLARE_WAITQUEUE(wait, current); | |
115 | int err = 0; | |
116 | ||
117 | BT_DBG("%s start", hdev->name); | |
118 | ||
119 | hdev->req_status = HCI_REQ_PEND; | |
120 | ||
121 | add_wait_queue(&hdev->req_wait_q, &wait); | |
122 | set_current_state(TASK_INTERRUPTIBLE); | |
123 | ||
124 | req(hdev, opt); | |
125 | schedule_timeout(timeout); | |
126 | ||
127 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
128 | ||
129 | if (signal_pending(current)) | |
130 | return -EINTR; | |
131 | ||
132 | switch (hdev->req_status) { | |
133 | case HCI_REQ_DONE: | |
e175072f | 134 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
135 | break; |
136 | ||
137 | case HCI_REQ_CANCELED: | |
138 | err = -hdev->req_result; | |
139 | break; | |
140 | ||
141 | default: | |
142 | err = -ETIMEDOUT; | |
143 | break; | |
3ff50b79 | 144 | } |
1da177e4 | 145 | |
a5040efa | 146 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
147 | |
148 | BT_DBG("%s end: err %d", hdev->name, err); | |
149 | ||
150 | return err; | |
151 | } | |
152 | ||
6039aa73 GP |
153 | static int hci_request(struct hci_dev *hdev, |
154 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
155 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
156 | { |
157 | int ret; | |
158 | ||
7c6a329e MH |
159 | if (!test_bit(HCI_UP, &hdev->flags)) |
160 | return -ENETDOWN; | |
161 | ||
1da177e4 LT |
162 | /* Serialize all requests */ |
163 | hci_req_lock(hdev); | |
164 | ret = __hci_request(hdev, req, opt, timeout); | |
165 | hci_req_unlock(hdev); | |
166 | ||
167 | return ret; | |
168 | } | |
169 | ||
170 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
171 | { | |
172 | BT_DBG("%s %ld", hdev->name, opt); | |
173 | ||
174 | /* Reset device */ | |
f630cf0d | 175 | set_bit(HCI_RESET, &hdev->flags); |
a9de9248 | 176 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
177 | } |
178 | ||
e61ef499 | 179 | static void bredr_init(struct hci_dev *hdev) |
1da177e4 | 180 | { |
2455a3ea AE |
181 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
182 | ||
1da177e4 | 183 | /* Read Local Supported Features */ |
a9de9248 | 184 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 185 | |
1143e5a6 | 186 | /* Read Local Version */ |
a9de9248 | 187 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1da177e4 LT |
188 | } |
189 | ||
e61ef499 AE |
190 | static void amp_init(struct hci_dev *hdev) |
191 | { | |
2455a3ea AE |
192 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
193 | ||
e61ef499 AE |
194 | /* Read Local Version */ |
195 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
6bcbc489 AE |
196 | |
197 | /* Read Local AMP Info */ | |
198 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); | |
e71dfaba AE |
199 | |
200 | /* Read Data Blk size */ | |
201 | hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); | |
e61ef499 AE |
202 | } |
203 | ||
204 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
205 | { | |
206 | struct sk_buff *skb; | |
207 | ||
208 | BT_DBG("%s %ld", hdev->name, opt); | |
209 | ||
210 | /* Driver initialization */ | |
211 | ||
212 | /* Special commands */ | |
213 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
214 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
215 | skb->dev = (void *) hdev; | |
216 | ||
217 | skb_queue_tail(&hdev->cmd_q, skb); | |
218 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
219 | } | |
220 | skb_queue_purge(&hdev->driver_init); | |
221 | ||
11778716 AE |
222 | /* Reset */ |
223 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
224 | hci_reset_req(hdev, 0); | |
225 | ||
e61ef499 AE |
226 | switch (hdev->dev_type) { |
227 | case HCI_BREDR: | |
228 | bredr_init(hdev); | |
229 | break; | |
230 | ||
231 | case HCI_AMP: | |
232 | amp_init(hdev); | |
233 | break; | |
234 | ||
235 | default: | |
236 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
237 | break; | |
238 | } | |
e61ef499 AE |
239 | } |
240 | ||
1da177e4 LT |
241 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
242 | { | |
243 | __u8 scan = opt; | |
244 | ||
245 | BT_DBG("%s %x", hdev->name, scan); | |
246 | ||
247 | /* Inquiry and Page scans */ | |
a9de9248 | 248 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
249 | } |
250 | ||
251 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
252 | { | |
253 | __u8 auth = opt; | |
254 | ||
255 | BT_DBG("%s %x", hdev->name, auth); | |
256 | ||
257 | /* Authentication */ | |
a9de9248 | 258 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
259 | } |
260 | ||
261 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
262 | { | |
263 | __u8 encrypt = opt; | |
264 | ||
265 | BT_DBG("%s %x", hdev->name, encrypt); | |
266 | ||
e4e8e37c | 267 | /* Encryption */ |
a9de9248 | 268 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
269 | } |
270 | ||
e4e8e37c MH |
271 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
272 | { | |
273 | __le16 policy = cpu_to_le16(opt); | |
274 | ||
a418b893 | 275 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
276 | |
277 | /* Default link policy */ | |
278 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
279 | } | |
280 | ||
8e87d142 | 281 | /* Get HCI device by index. |
1da177e4 LT |
282 | * Device is held on return. */ |
283 | struct hci_dev *hci_dev_get(int index) | |
284 | { | |
8035ded4 | 285 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
286 | |
287 | BT_DBG("%d", index); | |
288 | ||
289 | if (index < 0) | |
290 | return NULL; | |
291 | ||
292 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 293 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
294 | if (d->id == index) { |
295 | hdev = hci_dev_hold(d); | |
296 | break; | |
297 | } | |
298 | } | |
299 | read_unlock(&hci_dev_list_lock); | |
300 | return hdev; | |
301 | } | |
1da177e4 LT |
302 | |
303 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 304 | |
30dc78e1 JH |
305 | bool hci_discovery_active(struct hci_dev *hdev) |
306 | { | |
307 | struct discovery_state *discov = &hdev->discovery; | |
308 | ||
6fbe195d | 309 | switch (discov->state) { |
343f935b | 310 | case DISCOVERY_FINDING: |
6fbe195d | 311 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
312 | return true; |
313 | ||
6fbe195d AG |
314 | default: |
315 | return false; | |
316 | } | |
30dc78e1 JH |
317 | } |
318 | ||
ff9ef578 JH |
319 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
320 | { | |
321 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
322 | ||
323 | if (hdev->discovery.state == state) | |
324 | return; | |
325 | ||
326 | switch (state) { | |
327 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
328 | if (hdev->discovery.state != DISCOVERY_STARTING) |
329 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
330 | break; |
331 | case DISCOVERY_STARTING: | |
332 | break; | |
343f935b | 333 | case DISCOVERY_FINDING: |
ff9ef578 JH |
334 | mgmt_discovering(hdev, 1); |
335 | break; | |
30dc78e1 JH |
336 | case DISCOVERY_RESOLVING: |
337 | break; | |
ff9ef578 JH |
338 | case DISCOVERY_STOPPING: |
339 | break; | |
340 | } | |
341 | ||
342 | hdev->discovery.state = state; | |
343 | } | |
344 | ||
1da177e4 LT |
345 | static void inquiry_cache_flush(struct hci_dev *hdev) |
346 | { | |
30883512 | 347 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 348 | struct inquiry_entry *p, *n; |
1da177e4 | 349 | |
561aafbc JH |
350 | list_for_each_entry_safe(p, n, &cache->all, all) { |
351 | list_del(&p->all); | |
b57c1a56 | 352 | kfree(p); |
1da177e4 | 353 | } |
561aafbc JH |
354 | |
355 | INIT_LIST_HEAD(&cache->unknown); | |
356 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
357 | } |
358 | ||
a8c5fb1a GP |
359 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
360 | bdaddr_t *bdaddr) | |
1da177e4 | 361 | { |
30883512 | 362 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
363 | struct inquiry_entry *e; |
364 | ||
6ed93dc6 | 365 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 366 | |
561aafbc JH |
367 | list_for_each_entry(e, &cache->all, all) { |
368 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
369 | return e; | |
370 | } | |
371 | ||
372 | return NULL; | |
373 | } | |
374 | ||
375 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 376 | bdaddr_t *bdaddr) |
561aafbc | 377 | { |
30883512 | 378 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
379 | struct inquiry_entry *e; |
380 | ||
6ed93dc6 | 381 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
382 | |
383 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 384 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
385 | return e; |
386 | } | |
387 | ||
388 | return NULL; | |
1da177e4 LT |
389 | } |
390 | ||
30dc78e1 | 391 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
392 | bdaddr_t *bdaddr, |
393 | int state) | |
30dc78e1 JH |
394 | { |
395 | struct discovery_state *cache = &hdev->discovery; | |
396 | struct inquiry_entry *e; | |
397 | ||
6ed93dc6 | 398 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
399 | |
400 | list_for_each_entry(e, &cache->resolve, list) { | |
401 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
402 | return e; | |
403 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
404 | return e; | |
405 | } | |
406 | ||
407 | return NULL; | |
408 | } | |
409 | ||
a3d4e20a | 410 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 411 | struct inquiry_entry *ie) |
a3d4e20a JH |
412 | { |
413 | struct discovery_state *cache = &hdev->discovery; | |
414 | struct list_head *pos = &cache->resolve; | |
415 | struct inquiry_entry *p; | |
416 | ||
417 | list_del(&ie->list); | |
418 | ||
419 | list_for_each_entry(p, &cache->resolve, list) { | |
420 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 421 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
422 | break; |
423 | pos = &p->list; | |
424 | } | |
425 | ||
426 | list_add(&ie->list, pos); | |
427 | } | |
428 | ||
3175405b | 429 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 430 | bool name_known, bool *ssp) |
1da177e4 | 431 | { |
30883512 | 432 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 433 | struct inquiry_entry *ie; |
1da177e4 | 434 | |
6ed93dc6 | 435 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 436 | |
388fc8fa JH |
437 | if (ssp) |
438 | *ssp = data->ssp_mode; | |
439 | ||
70f23020 | 440 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 441 | if (ie) { |
388fc8fa JH |
442 | if (ie->data.ssp_mode && ssp) |
443 | *ssp = true; | |
444 | ||
a3d4e20a | 445 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 446 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
447 | ie->data.rssi = data->rssi; |
448 | hci_inquiry_cache_update_resolve(hdev, ie); | |
449 | } | |
450 | ||
561aafbc | 451 | goto update; |
a3d4e20a | 452 | } |
561aafbc JH |
453 | |
454 | /* Entry not in the cache. Add new one. */ | |
455 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
456 | if (!ie) | |
3175405b | 457 | return false; |
561aafbc JH |
458 | |
459 | list_add(&ie->all, &cache->all); | |
460 | ||
461 | if (name_known) { | |
462 | ie->name_state = NAME_KNOWN; | |
463 | } else { | |
464 | ie->name_state = NAME_NOT_KNOWN; | |
465 | list_add(&ie->list, &cache->unknown); | |
466 | } | |
70f23020 | 467 | |
561aafbc JH |
468 | update: |
469 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 470 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
471 | ie->name_state = NAME_KNOWN; |
472 | list_del(&ie->list); | |
1da177e4 LT |
473 | } |
474 | ||
70f23020 AE |
475 | memcpy(&ie->data, data, sizeof(*data)); |
476 | ie->timestamp = jiffies; | |
1da177e4 | 477 | cache->timestamp = jiffies; |
3175405b JH |
478 | |
479 | if (ie->name_state == NAME_NOT_KNOWN) | |
480 | return false; | |
481 | ||
482 | return true; | |
1da177e4 LT |
483 | } |
484 | ||
485 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
486 | { | |
30883512 | 487 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
488 | struct inquiry_info *info = (struct inquiry_info *) buf; |
489 | struct inquiry_entry *e; | |
490 | int copied = 0; | |
491 | ||
561aafbc | 492 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 493 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
494 | |
495 | if (copied >= num) | |
496 | break; | |
497 | ||
1da177e4 LT |
498 | bacpy(&info->bdaddr, &data->bdaddr); |
499 | info->pscan_rep_mode = data->pscan_rep_mode; | |
500 | info->pscan_period_mode = data->pscan_period_mode; | |
501 | info->pscan_mode = data->pscan_mode; | |
502 | memcpy(info->dev_class, data->dev_class, 3); | |
503 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 504 | |
1da177e4 | 505 | info++; |
b57c1a56 | 506 | copied++; |
1da177e4 LT |
507 | } |
508 | ||
509 | BT_DBG("cache %p, copied %d", cache, copied); | |
510 | return copied; | |
511 | } | |
512 | ||
513 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
514 | { | |
515 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
516 | struct hci_cp_inquiry cp; | |
517 | ||
518 | BT_DBG("%s", hdev->name); | |
519 | ||
520 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
521 | return; | |
522 | ||
523 | /* Start Inquiry */ | |
524 | memcpy(&cp.lap, &ir->lap, 3); | |
525 | cp.length = ir->length; | |
526 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 527 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
528 | } |
529 | ||
530 | int hci_inquiry(void __user *arg) | |
531 | { | |
532 | __u8 __user *ptr = arg; | |
533 | struct hci_inquiry_req ir; | |
534 | struct hci_dev *hdev; | |
535 | int err = 0, do_inquiry = 0, max_rsp; | |
536 | long timeo; | |
537 | __u8 *buf; | |
538 | ||
539 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
540 | return -EFAULT; | |
541 | ||
5a08ecce AE |
542 | hdev = hci_dev_get(ir.dev_id); |
543 | if (!hdev) | |
1da177e4 LT |
544 | return -ENODEV; |
545 | ||
09fd0de5 | 546 | hci_dev_lock(hdev); |
8e87d142 | 547 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 548 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
549 | inquiry_cache_flush(hdev); |
550 | do_inquiry = 1; | |
551 | } | |
09fd0de5 | 552 | hci_dev_unlock(hdev); |
1da177e4 | 553 | |
04837f64 | 554 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
555 | |
556 | if (do_inquiry) { | |
557 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
558 | if (err < 0) | |
559 | goto done; | |
560 | } | |
1da177e4 | 561 | |
8fc9ced3 GP |
562 | /* for unlimited number of responses we will use buffer with |
563 | * 255 entries | |
564 | */ | |
1da177e4 LT |
565 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
566 | ||
567 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
568 | * copy it to the user space. | |
569 | */ | |
01df8c31 | 570 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 571 | if (!buf) { |
1da177e4 LT |
572 | err = -ENOMEM; |
573 | goto done; | |
574 | } | |
575 | ||
09fd0de5 | 576 | hci_dev_lock(hdev); |
1da177e4 | 577 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 578 | hci_dev_unlock(hdev); |
1da177e4 LT |
579 | |
580 | BT_DBG("num_rsp %d", ir.num_rsp); | |
581 | ||
582 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
583 | ptr += sizeof(ir); | |
584 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 585 | ir.num_rsp)) |
1da177e4 | 586 | err = -EFAULT; |
8e87d142 | 587 | } else |
1da177e4 LT |
588 | err = -EFAULT; |
589 | ||
590 | kfree(buf); | |
591 | ||
592 | done: | |
593 | hci_dev_put(hdev); | |
594 | return err; | |
595 | } | |
596 | ||
3f0f524b JH |
597 | static u8 create_ad(struct hci_dev *hdev, u8 *ptr) |
598 | { | |
599 | u8 ad_len = 0, flags = 0; | |
600 | size_t name_len; | |
601 | ||
602 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) | |
603 | flags |= LE_AD_GENERAL; | |
604 | ||
605 | if (!lmp_bredr_capable(hdev)) | |
606 | flags |= LE_AD_NO_BREDR; | |
607 | ||
608 | if (lmp_le_br_capable(hdev)) | |
609 | flags |= LE_AD_SIM_LE_BREDR_CTRL; | |
610 | ||
611 | if (lmp_host_le_br_capable(hdev)) | |
612 | flags |= LE_AD_SIM_LE_BREDR_HOST; | |
613 | ||
614 | if (flags) { | |
615 | BT_DBG("adv flags 0x%02x", flags); | |
616 | ||
617 | ptr[0] = 2; | |
618 | ptr[1] = EIR_FLAGS; | |
619 | ptr[2] = flags; | |
620 | ||
621 | ad_len += 3; | |
622 | ptr += 3; | |
623 | } | |
624 | ||
625 | if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) { | |
626 | ptr[0] = 2; | |
627 | ptr[1] = EIR_TX_POWER; | |
628 | ptr[2] = (u8) hdev->adv_tx_power; | |
629 | ||
630 | ad_len += 3; | |
631 | ptr += 3; | |
632 | } | |
633 | ||
634 | name_len = strlen(hdev->dev_name); | |
635 | if (name_len > 0) { | |
636 | size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; | |
637 | ||
638 | if (name_len > max_len) { | |
639 | name_len = max_len; | |
640 | ptr[1] = EIR_NAME_SHORT; | |
641 | } else | |
642 | ptr[1] = EIR_NAME_COMPLETE; | |
643 | ||
644 | ptr[0] = name_len + 1; | |
645 | ||
646 | memcpy(ptr + 2, hdev->dev_name, name_len); | |
647 | ||
648 | ad_len += (name_len + 2); | |
649 | ptr += (name_len + 2); | |
650 | } | |
651 | ||
652 | return ad_len; | |
653 | } | |
654 | ||
655 | int hci_update_ad(struct hci_dev *hdev) | |
656 | { | |
657 | struct hci_cp_le_set_adv_data cp; | |
658 | u8 len; | |
659 | int err; | |
660 | ||
661 | hci_dev_lock(hdev); | |
662 | ||
663 | if (!lmp_le_capable(hdev)) { | |
664 | err = -EINVAL; | |
665 | goto unlock; | |
666 | } | |
667 | ||
668 | memset(&cp, 0, sizeof(cp)); | |
669 | ||
670 | len = create_ad(hdev, cp.data); | |
671 | ||
672 | if (hdev->adv_data_len == len && | |
673 | memcmp(cp.data, hdev->adv_data, len) == 0) { | |
674 | err = 0; | |
675 | goto unlock; | |
676 | } | |
677 | ||
678 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
679 | hdev->adv_data_len = len; | |
680 | ||
681 | cp.length = len; | |
682 | err = hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); | |
683 | ||
684 | unlock: | |
685 | hci_dev_unlock(hdev); | |
686 | ||
687 | return err; | |
688 | } | |
689 | ||
1da177e4 LT |
690 | /* ---- HCI ioctl helpers ---- */ |
691 | ||
692 | int hci_dev_open(__u16 dev) | |
693 | { | |
694 | struct hci_dev *hdev; | |
695 | int ret = 0; | |
696 | ||
5a08ecce AE |
697 | hdev = hci_dev_get(dev); |
698 | if (!hdev) | |
1da177e4 LT |
699 | return -ENODEV; |
700 | ||
701 | BT_DBG("%s %p", hdev->name, hdev); | |
702 | ||
703 | hci_req_lock(hdev); | |
704 | ||
94324962 JH |
705 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
706 | ret = -ENODEV; | |
707 | goto done; | |
708 | } | |
709 | ||
611b30f7 MH |
710 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
711 | ret = -ERFKILL; | |
712 | goto done; | |
713 | } | |
714 | ||
1da177e4 LT |
715 | if (test_bit(HCI_UP, &hdev->flags)) { |
716 | ret = -EALREADY; | |
717 | goto done; | |
718 | } | |
719 | ||
720 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
721 | set_bit(HCI_RAW, &hdev->flags); | |
722 | ||
07e3b94a AE |
723 | /* Treat all non BR/EDR controllers as raw devices if |
724 | enable_hs is not set */ | |
725 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
726 | set_bit(HCI_RAW, &hdev->flags); |
727 | ||
1da177e4 LT |
728 | if (hdev->open(hdev)) { |
729 | ret = -EIO; | |
730 | goto done; | |
731 | } | |
732 | ||
733 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
734 | atomic_set(&hdev->cmd_cnt, 1); | |
735 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 736 | hdev->init_last_cmd = 0; |
1da177e4 | 737 | |
5f246e89 | 738 | ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
739 | |
740 | clear_bit(HCI_INIT, &hdev->flags); | |
741 | } | |
742 | ||
743 | if (!ret) { | |
744 | hci_dev_hold(hdev); | |
745 | set_bit(HCI_UP, &hdev->flags); | |
746 | hci_notify(hdev, HCI_DEV_UP); | |
3f0f524b | 747 | hci_update_ad(hdev); |
bb4b2a9a AE |
748 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
749 | mgmt_valid_hdev(hdev)) { | |
09fd0de5 | 750 | hci_dev_lock(hdev); |
744cf19e | 751 | mgmt_powered(hdev, 1); |
09fd0de5 | 752 | hci_dev_unlock(hdev); |
56e5cb86 | 753 | } |
8e87d142 | 754 | } else { |
1da177e4 | 755 | /* Init failed, cleanup */ |
3eff45ea | 756 | flush_work(&hdev->tx_work); |
c347b765 | 757 | flush_work(&hdev->cmd_work); |
b78752cc | 758 | flush_work(&hdev->rx_work); |
1da177e4 LT |
759 | |
760 | skb_queue_purge(&hdev->cmd_q); | |
761 | skb_queue_purge(&hdev->rx_q); | |
762 | ||
763 | if (hdev->flush) | |
764 | hdev->flush(hdev); | |
765 | ||
766 | if (hdev->sent_cmd) { | |
767 | kfree_skb(hdev->sent_cmd); | |
768 | hdev->sent_cmd = NULL; | |
769 | } | |
770 | ||
771 | hdev->close(hdev); | |
772 | hdev->flags = 0; | |
773 | } | |
774 | ||
775 | done: | |
776 | hci_req_unlock(hdev); | |
777 | hci_dev_put(hdev); | |
778 | return ret; | |
779 | } | |
780 | ||
781 | static int hci_dev_do_close(struct hci_dev *hdev) | |
782 | { | |
783 | BT_DBG("%s %p", hdev->name, hdev); | |
784 | ||
28b75a89 AG |
785 | cancel_work_sync(&hdev->le_scan); |
786 | ||
78c04c0b VCG |
787 | cancel_delayed_work(&hdev->power_off); |
788 | ||
1da177e4 LT |
789 | hci_req_cancel(hdev, ENODEV); |
790 | hci_req_lock(hdev); | |
791 | ||
792 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 793 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
794 | hci_req_unlock(hdev); |
795 | return 0; | |
796 | } | |
797 | ||
3eff45ea GP |
798 | /* Flush RX and TX works */ |
799 | flush_work(&hdev->tx_work); | |
b78752cc | 800 | flush_work(&hdev->rx_work); |
1da177e4 | 801 | |
16ab91ab | 802 | if (hdev->discov_timeout > 0) { |
e0f9309f | 803 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 804 | hdev->discov_timeout = 0; |
5e5282bb | 805 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
806 | } |
807 | ||
a8b2d5c2 | 808 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
809 | cancel_delayed_work(&hdev->service_cache); |
810 | ||
7ba8b4be AG |
811 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
812 | ||
09fd0de5 | 813 | hci_dev_lock(hdev); |
1da177e4 LT |
814 | inquiry_cache_flush(hdev); |
815 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 816 | hci_dev_unlock(hdev); |
1da177e4 LT |
817 | |
818 | hci_notify(hdev, HCI_DEV_DOWN); | |
819 | ||
820 | if (hdev->flush) | |
821 | hdev->flush(hdev); | |
822 | ||
823 | /* Reset device */ | |
824 | skb_queue_purge(&hdev->cmd_q); | |
825 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 826 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 827 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 828 | set_bit(HCI_INIT, &hdev->flags); |
5f246e89 | 829 | __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
830 | clear_bit(HCI_INIT, &hdev->flags); |
831 | } | |
832 | ||
c347b765 GP |
833 | /* flush cmd work */ |
834 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
835 | |
836 | /* Drop queues */ | |
837 | skb_queue_purge(&hdev->rx_q); | |
838 | skb_queue_purge(&hdev->cmd_q); | |
839 | skb_queue_purge(&hdev->raw_q); | |
840 | ||
841 | /* Drop last sent command */ | |
842 | if (hdev->sent_cmd) { | |
b79f44c1 | 843 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
844 | kfree_skb(hdev->sent_cmd); |
845 | hdev->sent_cmd = NULL; | |
846 | } | |
847 | ||
848 | /* After this point our queues are empty | |
849 | * and no tasks are scheduled. */ | |
850 | hdev->close(hdev); | |
851 | ||
bb4b2a9a AE |
852 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
853 | mgmt_valid_hdev(hdev)) { | |
8ee56540 MH |
854 | hci_dev_lock(hdev); |
855 | mgmt_powered(hdev, 0); | |
856 | hci_dev_unlock(hdev); | |
857 | } | |
5add6af8 | 858 | |
1da177e4 LT |
859 | /* Clear flags */ |
860 | hdev->flags = 0; | |
861 | ||
e59fda8d | 862 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 863 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 864 | |
1da177e4 LT |
865 | hci_req_unlock(hdev); |
866 | ||
867 | hci_dev_put(hdev); | |
868 | return 0; | |
869 | } | |
870 | ||
871 | int hci_dev_close(__u16 dev) | |
872 | { | |
873 | struct hci_dev *hdev; | |
874 | int err; | |
875 | ||
70f23020 AE |
876 | hdev = hci_dev_get(dev); |
877 | if (!hdev) | |
1da177e4 | 878 | return -ENODEV; |
8ee56540 MH |
879 | |
880 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
881 | cancel_delayed_work(&hdev->power_off); | |
882 | ||
1da177e4 | 883 | err = hci_dev_do_close(hdev); |
8ee56540 | 884 | |
1da177e4 LT |
885 | hci_dev_put(hdev); |
886 | return err; | |
887 | } | |
888 | ||
889 | int hci_dev_reset(__u16 dev) | |
890 | { | |
891 | struct hci_dev *hdev; | |
892 | int ret = 0; | |
893 | ||
70f23020 AE |
894 | hdev = hci_dev_get(dev); |
895 | if (!hdev) | |
1da177e4 LT |
896 | return -ENODEV; |
897 | ||
898 | hci_req_lock(hdev); | |
1da177e4 LT |
899 | |
900 | if (!test_bit(HCI_UP, &hdev->flags)) | |
901 | goto done; | |
902 | ||
903 | /* Drop queues */ | |
904 | skb_queue_purge(&hdev->rx_q); | |
905 | skb_queue_purge(&hdev->cmd_q); | |
906 | ||
09fd0de5 | 907 | hci_dev_lock(hdev); |
1da177e4 LT |
908 | inquiry_cache_flush(hdev); |
909 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 910 | hci_dev_unlock(hdev); |
1da177e4 LT |
911 | |
912 | if (hdev->flush) | |
913 | hdev->flush(hdev); | |
914 | ||
8e87d142 | 915 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 916 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
917 | |
918 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
5f246e89 | 919 | ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
920 | |
921 | done: | |
1da177e4 LT |
922 | hci_req_unlock(hdev); |
923 | hci_dev_put(hdev); | |
924 | return ret; | |
925 | } | |
926 | ||
927 | int hci_dev_reset_stat(__u16 dev) | |
928 | { | |
929 | struct hci_dev *hdev; | |
930 | int ret = 0; | |
931 | ||
70f23020 AE |
932 | hdev = hci_dev_get(dev); |
933 | if (!hdev) | |
1da177e4 LT |
934 | return -ENODEV; |
935 | ||
936 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
937 | ||
938 | hci_dev_put(hdev); | |
939 | ||
940 | return ret; | |
941 | } | |
942 | ||
943 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
944 | { | |
945 | struct hci_dev *hdev; | |
946 | struct hci_dev_req dr; | |
947 | int err = 0; | |
948 | ||
949 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
950 | return -EFAULT; | |
951 | ||
70f23020 AE |
952 | hdev = hci_dev_get(dr.dev_id); |
953 | if (!hdev) | |
1da177e4 LT |
954 | return -ENODEV; |
955 | ||
956 | switch (cmd) { | |
957 | case HCISETAUTH: | |
04837f64 | 958 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 959 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
960 | break; |
961 | ||
962 | case HCISETENCRYPT: | |
963 | if (!lmp_encrypt_capable(hdev)) { | |
964 | err = -EOPNOTSUPP; | |
965 | break; | |
966 | } | |
967 | ||
968 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
969 | /* Auth must be enabled first */ | |
04837f64 | 970 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 971 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
972 | if (err) |
973 | break; | |
974 | } | |
975 | ||
04837f64 | 976 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
5f246e89 | 977 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
978 | break; |
979 | ||
980 | case HCISETSCAN: | |
04837f64 | 981 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
5f246e89 | 982 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
983 | break; |
984 | ||
1da177e4 | 985 | case HCISETLINKPOL: |
e4e8e37c | 986 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
5f246e89 | 987 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
988 | break; |
989 | ||
990 | case HCISETLINKMODE: | |
e4e8e37c MH |
991 | hdev->link_mode = ((__u16) dr.dev_opt) & |
992 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
993 | break; | |
994 | ||
995 | case HCISETPTYPE: | |
996 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
997 | break; |
998 | ||
999 | case HCISETACLMTU: | |
e4e8e37c MH |
1000 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1001 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1002 | break; |
1003 | ||
1004 | case HCISETSCOMTU: | |
e4e8e37c MH |
1005 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1006 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1007 | break; |
1008 | ||
1009 | default: | |
1010 | err = -EINVAL; | |
1011 | break; | |
1012 | } | |
e4e8e37c | 1013 | |
1da177e4 LT |
1014 | hci_dev_put(hdev); |
1015 | return err; | |
1016 | } | |
1017 | ||
1018 | int hci_get_dev_list(void __user *arg) | |
1019 | { | |
8035ded4 | 1020 | struct hci_dev *hdev; |
1da177e4 LT |
1021 | struct hci_dev_list_req *dl; |
1022 | struct hci_dev_req *dr; | |
1da177e4 LT |
1023 | int n = 0, size, err; |
1024 | __u16 dev_num; | |
1025 | ||
1026 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1027 | return -EFAULT; | |
1028 | ||
1029 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1030 | return -EINVAL; | |
1031 | ||
1032 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1033 | ||
70f23020 AE |
1034 | dl = kzalloc(size, GFP_KERNEL); |
1035 | if (!dl) | |
1da177e4 LT |
1036 | return -ENOMEM; |
1037 | ||
1038 | dr = dl->dev_req; | |
1039 | ||
f20d09d5 | 1040 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1041 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1042 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1043 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1044 | |
a8b2d5c2 JH |
1045 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1046 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1047 | |
1da177e4 LT |
1048 | (dr + n)->dev_id = hdev->id; |
1049 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1050 | |
1da177e4 LT |
1051 | if (++n >= dev_num) |
1052 | break; | |
1053 | } | |
f20d09d5 | 1054 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1055 | |
1056 | dl->dev_num = n; | |
1057 | size = sizeof(*dl) + n * sizeof(*dr); | |
1058 | ||
1059 | err = copy_to_user(arg, dl, size); | |
1060 | kfree(dl); | |
1061 | ||
1062 | return err ? -EFAULT : 0; | |
1063 | } | |
1064 | ||
1065 | int hci_get_dev_info(void __user *arg) | |
1066 | { | |
1067 | struct hci_dev *hdev; | |
1068 | struct hci_dev_info di; | |
1069 | int err = 0; | |
1070 | ||
1071 | if (copy_from_user(&di, arg, sizeof(di))) | |
1072 | return -EFAULT; | |
1073 | ||
70f23020 AE |
1074 | hdev = hci_dev_get(di.dev_id); |
1075 | if (!hdev) | |
1da177e4 LT |
1076 | return -ENODEV; |
1077 | ||
a8b2d5c2 | 1078 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1079 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1080 | |
a8b2d5c2 JH |
1081 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1082 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1083 | |
1da177e4 LT |
1084 | strcpy(di.name, hdev->name); |
1085 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1086 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1087 | di.flags = hdev->flags; |
1088 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1089 | if (lmp_bredr_capable(hdev)) { |
1090 | di.acl_mtu = hdev->acl_mtu; | |
1091 | di.acl_pkts = hdev->acl_pkts; | |
1092 | di.sco_mtu = hdev->sco_mtu; | |
1093 | di.sco_pkts = hdev->sco_pkts; | |
1094 | } else { | |
1095 | di.acl_mtu = hdev->le_mtu; | |
1096 | di.acl_pkts = hdev->le_pkts; | |
1097 | di.sco_mtu = 0; | |
1098 | di.sco_pkts = 0; | |
1099 | } | |
1da177e4 LT |
1100 | di.link_policy = hdev->link_policy; |
1101 | di.link_mode = hdev->link_mode; | |
1102 | ||
1103 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1104 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1105 | ||
1106 | if (copy_to_user(arg, &di, sizeof(di))) | |
1107 | err = -EFAULT; | |
1108 | ||
1109 | hci_dev_put(hdev); | |
1110 | ||
1111 | return err; | |
1112 | } | |
1113 | ||
1114 | /* ---- Interface to HCI drivers ---- */ | |
1115 | ||
611b30f7 MH |
1116 | static int hci_rfkill_set_block(void *data, bool blocked) |
1117 | { | |
1118 | struct hci_dev *hdev = data; | |
1119 | ||
1120 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1121 | ||
1122 | if (!blocked) | |
1123 | return 0; | |
1124 | ||
1125 | hci_dev_do_close(hdev); | |
1126 | ||
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | static const struct rfkill_ops hci_rfkill_ops = { | |
1131 | .set_block = hci_rfkill_set_block, | |
1132 | }; | |
1133 | ||
ab81cbf9 JH |
1134 | static void hci_power_on(struct work_struct *work) |
1135 | { | |
1136 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1137 | ||
1138 | BT_DBG("%s", hdev->name); | |
1139 | ||
1140 | if (hci_dev_open(hdev->id) < 0) | |
1141 | return; | |
1142 | ||
a8b2d5c2 | 1143 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
9345d40c | 1144 | schedule_delayed_work(&hdev->power_off, HCI_AUTO_OFF_TIMEOUT); |
ab81cbf9 | 1145 | |
a8b2d5c2 | 1146 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1147 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1148 | } |
1149 | ||
1150 | static void hci_power_off(struct work_struct *work) | |
1151 | { | |
3243553f | 1152 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1153 | power_off.work); |
ab81cbf9 JH |
1154 | |
1155 | BT_DBG("%s", hdev->name); | |
1156 | ||
8ee56540 | 1157 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1158 | } |
1159 | ||
16ab91ab JH |
1160 | static void hci_discov_off(struct work_struct *work) |
1161 | { | |
1162 | struct hci_dev *hdev; | |
1163 | u8 scan = SCAN_PAGE; | |
1164 | ||
1165 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1166 | ||
1167 | BT_DBG("%s", hdev->name); | |
1168 | ||
09fd0de5 | 1169 | hci_dev_lock(hdev); |
16ab91ab JH |
1170 | |
1171 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1172 | ||
1173 | hdev->discov_timeout = 0; | |
1174 | ||
09fd0de5 | 1175 | hci_dev_unlock(hdev); |
16ab91ab JH |
1176 | } |
1177 | ||
2aeb9a1a JH |
1178 | int hci_uuids_clear(struct hci_dev *hdev) |
1179 | { | |
1180 | struct list_head *p, *n; | |
1181 | ||
1182 | list_for_each_safe(p, n, &hdev->uuids) { | |
1183 | struct bt_uuid *uuid; | |
1184 | ||
1185 | uuid = list_entry(p, struct bt_uuid, list); | |
1186 | ||
1187 | list_del(p); | |
1188 | kfree(uuid); | |
1189 | } | |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
55ed8ca1 JH |
1194 | int hci_link_keys_clear(struct hci_dev *hdev) |
1195 | { | |
1196 | struct list_head *p, *n; | |
1197 | ||
1198 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1199 | struct link_key *key; | |
1200 | ||
1201 | key = list_entry(p, struct link_key, list); | |
1202 | ||
1203 | list_del(p); | |
1204 | kfree(key); | |
1205 | } | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
b899efaf VCG |
1210 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1211 | { | |
1212 | struct smp_ltk *k, *tmp; | |
1213 | ||
1214 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1215 | list_del(&k->list); | |
1216 | kfree(k); | |
1217 | } | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
55ed8ca1 JH |
1222 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1223 | { | |
8035ded4 | 1224 | struct link_key *k; |
55ed8ca1 | 1225 | |
8035ded4 | 1226 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1227 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1228 | return k; | |
55ed8ca1 JH |
1229 | |
1230 | return NULL; | |
1231 | } | |
1232 | ||
745c0ce3 | 1233 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1234 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1235 | { |
1236 | /* Legacy key */ | |
1237 | if (key_type < 0x03) | |
745c0ce3 | 1238 | return true; |
d25e28ab JH |
1239 | |
1240 | /* Debug keys are insecure so don't store them persistently */ | |
1241 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1242 | return false; |
d25e28ab JH |
1243 | |
1244 | /* Changed combination key and there's no previous one */ | |
1245 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1246 | return false; |
d25e28ab JH |
1247 | |
1248 | /* Security mode 3 case */ | |
1249 | if (!conn) | |
745c0ce3 | 1250 | return true; |
d25e28ab JH |
1251 | |
1252 | /* Neither local nor remote side had no-bonding as requirement */ | |
1253 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1254 | return true; |
d25e28ab JH |
1255 | |
1256 | /* Local side had dedicated bonding as requirement */ | |
1257 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1258 | return true; |
d25e28ab JH |
1259 | |
1260 | /* Remote side had dedicated bonding as requirement */ | |
1261 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1262 | return true; |
d25e28ab JH |
1263 | |
1264 | /* If none of the above criteria match, then don't store the key | |
1265 | * persistently */ | |
745c0ce3 | 1266 | return false; |
d25e28ab JH |
1267 | } |
1268 | ||
c9839a11 | 1269 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1270 | { |
c9839a11 | 1271 | struct smp_ltk *k; |
75d262c2 | 1272 | |
c9839a11 VCG |
1273 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1274 | if (k->ediv != ediv || | |
a8c5fb1a | 1275 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1276 | continue; |
1277 | ||
c9839a11 | 1278 | return k; |
75d262c2 VCG |
1279 | } |
1280 | ||
1281 | return NULL; | |
1282 | } | |
75d262c2 | 1283 | |
c9839a11 | 1284 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1285 | u8 addr_type) |
75d262c2 | 1286 | { |
c9839a11 | 1287 | struct smp_ltk *k; |
75d262c2 | 1288 | |
c9839a11 VCG |
1289 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1290 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1291 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1292 | return k; |
1293 | ||
1294 | return NULL; | |
1295 | } | |
75d262c2 | 1296 | |
d25e28ab | 1297 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1298 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1299 | { |
1300 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1301 | u8 old_key_type; |
1302 | bool persistent; | |
55ed8ca1 JH |
1303 | |
1304 | old_key = hci_find_link_key(hdev, bdaddr); | |
1305 | if (old_key) { | |
1306 | old_key_type = old_key->type; | |
1307 | key = old_key; | |
1308 | } else { | |
12adcf3a | 1309 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1310 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1311 | if (!key) | |
1312 | return -ENOMEM; | |
1313 | list_add(&key->list, &hdev->link_keys); | |
1314 | } | |
1315 | ||
6ed93dc6 | 1316 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 1317 | |
d25e28ab JH |
1318 | /* Some buggy controller combinations generate a changed |
1319 | * combination key for legacy pairing even when there's no | |
1320 | * previous key */ | |
1321 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1322 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1323 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1324 | if (conn) |
1325 | conn->key_type = type; | |
1326 | } | |
d25e28ab | 1327 | |
55ed8ca1 | 1328 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1329 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1330 | key->pin_len = pin_len; |
1331 | ||
b6020ba0 | 1332 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1333 | key->type = old_key_type; |
4748fed2 JH |
1334 | else |
1335 | key->type = type; | |
1336 | ||
4df378a1 JH |
1337 | if (!new_key) |
1338 | return 0; | |
1339 | ||
1340 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1341 | ||
744cf19e | 1342 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1343 | |
6ec5bcad VA |
1344 | if (conn) |
1345 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1346 | |
1347 | return 0; | |
1348 | } | |
1349 | ||
c9839a11 | 1350 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1351 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1352 | ediv, u8 rand[8]) |
75d262c2 | 1353 | { |
c9839a11 | 1354 | struct smp_ltk *key, *old_key; |
75d262c2 | 1355 | |
c9839a11 VCG |
1356 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1357 | return 0; | |
75d262c2 | 1358 | |
c9839a11 VCG |
1359 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1360 | if (old_key) | |
75d262c2 | 1361 | key = old_key; |
c9839a11 VCG |
1362 | else { |
1363 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1364 | if (!key) |
1365 | return -ENOMEM; | |
c9839a11 | 1366 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1367 | } |
1368 | ||
75d262c2 | 1369 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1370 | key->bdaddr_type = addr_type; |
1371 | memcpy(key->val, tk, sizeof(key->val)); | |
1372 | key->authenticated = authenticated; | |
1373 | key->ediv = ediv; | |
1374 | key->enc_size = enc_size; | |
1375 | key->type = type; | |
1376 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1377 | |
c9839a11 VCG |
1378 | if (!new_key) |
1379 | return 0; | |
75d262c2 | 1380 | |
261cc5aa VCG |
1381 | if (type & HCI_SMP_LTK) |
1382 | mgmt_new_ltk(hdev, key, 1); | |
1383 | ||
75d262c2 VCG |
1384 | return 0; |
1385 | } | |
1386 | ||
55ed8ca1 JH |
1387 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1388 | { | |
1389 | struct link_key *key; | |
1390 | ||
1391 | key = hci_find_link_key(hdev, bdaddr); | |
1392 | if (!key) | |
1393 | return -ENOENT; | |
1394 | ||
6ed93dc6 | 1395 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
1396 | |
1397 | list_del(&key->list); | |
1398 | kfree(key); | |
1399 | ||
1400 | return 0; | |
1401 | } | |
1402 | ||
b899efaf VCG |
1403 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1404 | { | |
1405 | struct smp_ltk *k, *tmp; | |
1406 | ||
1407 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1408 | if (bacmp(bdaddr, &k->bdaddr)) | |
1409 | continue; | |
1410 | ||
6ed93dc6 | 1411 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
1412 | |
1413 | list_del(&k->list); | |
1414 | kfree(k); | |
1415 | } | |
1416 | ||
1417 | return 0; | |
1418 | } | |
1419 | ||
6bd32326 | 1420 | /* HCI command timer function */ |
bda4f23a | 1421 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1422 | { |
1423 | struct hci_dev *hdev = (void *) arg; | |
1424 | ||
bda4f23a AE |
1425 | if (hdev->sent_cmd) { |
1426 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1427 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1428 | ||
1429 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1430 | } else { | |
1431 | BT_ERR("%s command tx timeout", hdev->name); | |
1432 | } | |
1433 | ||
6bd32326 | 1434 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1435 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1436 | } |
1437 | ||
2763eda6 | 1438 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1439 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1440 | { |
1441 | struct oob_data *data; | |
1442 | ||
1443 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1444 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1445 | return data; | |
1446 | ||
1447 | return NULL; | |
1448 | } | |
1449 | ||
1450 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1451 | { | |
1452 | struct oob_data *data; | |
1453 | ||
1454 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1455 | if (!data) | |
1456 | return -ENOENT; | |
1457 | ||
6ed93dc6 | 1458 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1459 | |
1460 | list_del(&data->list); | |
1461 | kfree(data); | |
1462 | ||
1463 | return 0; | |
1464 | } | |
1465 | ||
1466 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1467 | { | |
1468 | struct oob_data *data, *n; | |
1469 | ||
1470 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1471 | list_del(&data->list); | |
1472 | kfree(data); | |
1473 | } | |
1474 | ||
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1479 | u8 *randomizer) |
2763eda6 SJ |
1480 | { |
1481 | struct oob_data *data; | |
1482 | ||
1483 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1484 | ||
1485 | if (!data) { | |
1486 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1487 | if (!data) | |
1488 | return -ENOMEM; | |
1489 | ||
1490 | bacpy(&data->bdaddr, bdaddr); | |
1491 | list_add(&data->list, &hdev->remote_oob_data); | |
1492 | } | |
1493 | ||
1494 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1495 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1496 | ||
6ed93dc6 | 1497 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
1498 | |
1499 | return 0; | |
1500 | } | |
1501 | ||
04124681 | 1502 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1503 | { |
8035ded4 | 1504 | struct bdaddr_list *b; |
b2a66aad | 1505 | |
8035ded4 | 1506 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1507 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1508 | return b; | |
b2a66aad AJ |
1509 | |
1510 | return NULL; | |
1511 | } | |
1512 | ||
1513 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1514 | { | |
1515 | struct list_head *p, *n; | |
1516 | ||
1517 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1518 | struct bdaddr_list *b; | |
1519 | ||
1520 | b = list_entry(p, struct bdaddr_list, list); | |
1521 | ||
1522 | list_del(p); | |
1523 | kfree(b); | |
1524 | } | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | ||
88c1fe4b | 1529 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1530 | { |
1531 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1532 | |
1533 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1534 | return -EBADF; | |
1535 | ||
5e762444 AJ |
1536 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1537 | return -EEXIST; | |
b2a66aad AJ |
1538 | |
1539 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1540 | if (!entry) |
1541 | return -ENOMEM; | |
b2a66aad AJ |
1542 | |
1543 | bacpy(&entry->bdaddr, bdaddr); | |
1544 | ||
1545 | list_add(&entry->list, &hdev->blacklist); | |
1546 | ||
88c1fe4b | 1547 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1548 | } |
1549 | ||
88c1fe4b | 1550 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1551 | { |
1552 | struct bdaddr_list *entry; | |
b2a66aad | 1553 | |
1ec918ce | 1554 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1555 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1556 | |
1557 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1558 | if (!entry) |
5e762444 | 1559 | return -ENOENT; |
b2a66aad AJ |
1560 | |
1561 | list_del(&entry->list); | |
1562 | kfree(entry); | |
1563 | ||
88c1fe4b | 1564 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1565 | } |
1566 | ||
7ba8b4be AG |
1567 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
1568 | { | |
1569 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1570 | struct hci_cp_le_set_scan_param cp; | |
1571 | ||
1572 | memset(&cp, 0, sizeof(cp)); | |
1573 | cp.type = param->type; | |
1574 | cp.interval = cpu_to_le16(param->interval); | |
1575 | cp.window = cpu_to_le16(param->window); | |
1576 | ||
1577 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); | |
1578 | } | |
1579 | ||
1580 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) | |
1581 | { | |
1582 | struct hci_cp_le_set_scan_enable cp; | |
1583 | ||
1584 | memset(&cp, 0, sizeof(cp)); | |
1585 | cp.enable = 1; | |
0431a43c | 1586 | cp.filter_dup = 1; |
7ba8b4be AG |
1587 | |
1588 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1589 | } | |
1590 | ||
1591 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 1592 | u16 window, int timeout) |
7ba8b4be AG |
1593 | { |
1594 | long timeo = msecs_to_jiffies(3000); | |
1595 | struct le_scan_params param; | |
1596 | int err; | |
1597 | ||
1598 | BT_DBG("%s", hdev->name); | |
1599 | ||
1600 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1601 | return -EINPROGRESS; | |
1602 | ||
1603 | param.type = type; | |
1604 | param.interval = interval; | |
1605 | param.window = window; | |
1606 | ||
1607 | hci_req_lock(hdev); | |
1608 | ||
1609 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, | |
04124681 | 1610 | timeo); |
7ba8b4be AG |
1611 | if (!err) |
1612 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); | |
1613 | ||
1614 | hci_req_unlock(hdev); | |
1615 | ||
1616 | if (err < 0) | |
1617 | return err; | |
1618 | ||
1619 | schedule_delayed_work(&hdev->le_scan_disable, | |
04124681 | 1620 | msecs_to_jiffies(timeout)); |
7ba8b4be AG |
1621 | |
1622 | return 0; | |
1623 | } | |
1624 | ||
7dbfac1d AG |
1625 | int hci_cancel_le_scan(struct hci_dev *hdev) |
1626 | { | |
1627 | BT_DBG("%s", hdev->name); | |
1628 | ||
1629 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1630 | return -EALREADY; | |
1631 | ||
1632 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
1633 | struct hci_cp_le_set_scan_enable cp; | |
1634 | ||
1635 | /* Send HCI command to disable LE Scan */ | |
1636 | memset(&cp, 0, sizeof(cp)); | |
1637 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1638 | } | |
1639 | ||
1640 | return 0; | |
1641 | } | |
1642 | ||
7ba8b4be AG |
1643 | static void le_scan_disable_work(struct work_struct *work) |
1644 | { | |
1645 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 1646 | le_scan_disable.work); |
7ba8b4be AG |
1647 | struct hci_cp_le_set_scan_enable cp; |
1648 | ||
1649 | BT_DBG("%s", hdev->name); | |
1650 | ||
1651 | memset(&cp, 0, sizeof(cp)); | |
1652 | ||
1653 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1654 | } | |
1655 | ||
28b75a89 AG |
1656 | static void le_scan_work(struct work_struct *work) |
1657 | { | |
1658 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
1659 | struct le_scan_params *param = &hdev->le_scan_params; | |
1660 | ||
1661 | BT_DBG("%s", hdev->name); | |
1662 | ||
04124681 GP |
1663 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
1664 | param->timeout); | |
28b75a89 AG |
1665 | } |
1666 | ||
1667 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 1668 | int timeout) |
28b75a89 AG |
1669 | { |
1670 | struct le_scan_params *param = &hdev->le_scan_params; | |
1671 | ||
1672 | BT_DBG("%s", hdev->name); | |
1673 | ||
f1550478 JH |
1674 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) |
1675 | return -ENOTSUPP; | |
1676 | ||
28b75a89 AG |
1677 | if (work_busy(&hdev->le_scan)) |
1678 | return -EINPROGRESS; | |
1679 | ||
1680 | param->type = type; | |
1681 | param->interval = interval; | |
1682 | param->window = window; | |
1683 | param->timeout = timeout; | |
1684 | ||
1685 | queue_work(system_long_wq, &hdev->le_scan); | |
1686 | ||
1687 | return 0; | |
1688 | } | |
1689 | ||
9be0dab7 DH |
1690 | /* Alloc HCI device */ |
1691 | struct hci_dev *hci_alloc_dev(void) | |
1692 | { | |
1693 | struct hci_dev *hdev; | |
1694 | ||
1695 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
1696 | if (!hdev) | |
1697 | return NULL; | |
1698 | ||
b1b813d4 DH |
1699 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
1700 | hdev->esco_type = (ESCO_HV1); | |
1701 | hdev->link_mode = (HCI_LM_ACCEPT); | |
1702 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
1703 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
1704 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 1705 | |
b1b813d4 DH |
1706 | hdev->sniff_max_interval = 800; |
1707 | hdev->sniff_min_interval = 80; | |
1708 | ||
1709 | mutex_init(&hdev->lock); | |
1710 | mutex_init(&hdev->req_lock); | |
1711 | ||
1712 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
1713 | INIT_LIST_HEAD(&hdev->blacklist); | |
1714 | INIT_LIST_HEAD(&hdev->uuids); | |
1715 | INIT_LIST_HEAD(&hdev->link_keys); | |
1716 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
1717 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 1718 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
1719 | |
1720 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
1721 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
1722 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
1723 | INIT_WORK(&hdev->power_on, hci_power_on); | |
1724 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
1725 | ||
b1b813d4 DH |
1726 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
1727 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
1728 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
1729 | ||
9be0dab7 | 1730 | skb_queue_head_init(&hdev->driver_init); |
b1b813d4 DH |
1731 | skb_queue_head_init(&hdev->rx_q); |
1732 | skb_queue_head_init(&hdev->cmd_q); | |
1733 | skb_queue_head_init(&hdev->raw_q); | |
1734 | ||
1735 | init_waitqueue_head(&hdev->req_wait_q); | |
1736 | ||
bda4f23a | 1737 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 1738 | |
b1b813d4 DH |
1739 | hci_init_sysfs(hdev); |
1740 | discovery_init(hdev); | |
9be0dab7 DH |
1741 | |
1742 | return hdev; | |
1743 | } | |
1744 | EXPORT_SYMBOL(hci_alloc_dev); | |
1745 | ||
1746 | /* Free HCI device */ | |
1747 | void hci_free_dev(struct hci_dev *hdev) | |
1748 | { | |
1749 | skb_queue_purge(&hdev->driver_init); | |
1750 | ||
1751 | /* will free via device release */ | |
1752 | put_device(&hdev->dev); | |
1753 | } | |
1754 | EXPORT_SYMBOL(hci_free_dev); | |
1755 | ||
1da177e4 LT |
1756 | /* Register HCI device */ |
1757 | int hci_register_dev(struct hci_dev *hdev) | |
1758 | { | |
b1b813d4 | 1759 | int id, error; |
1da177e4 | 1760 | |
010666a1 | 1761 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
1762 | return -EINVAL; |
1763 | ||
08add513 MM |
1764 | /* Do not allow HCI_AMP devices to register at index 0, |
1765 | * so the index can be used as the AMP controller ID. | |
1766 | */ | |
3df92b31 SL |
1767 | switch (hdev->dev_type) { |
1768 | case HCI_BREDR: | |
1769 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
1770 | break; | |
1771 | case HCI_AMP: | |
1772 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
1773 | break; | |
1774 | default: | |
1775 | return -EINVAL; | |
1da177e4 | 1776 | } |
8e87d142 | 1777 | |
3df92b31 SL |
1778 | if (id < 0) |
1779 | return id; | |
1780 | ||
1da177e4 LT |
1781 | sprintf(hdev->name, "hci%d", id); |
1782 | hdev->id = id; | |
2d8b3a11 AE |
1783 | |
1784 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
1785 | ||
3df92b31 SL |
1786 | write_lock(&hci_dev_list_lock); |
1787 | list_add(&hdev->list, &hci_dev_list); | |
f20d09d5 | 1788 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1789 | |
32845eb1 | 1790 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 1791 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
1792 | if (!hdev->workqueue) { |
1793 | error = -ENOMEM; | |
1794 | goto err; | |
1795 | } | |
f48fd9c8 | 1796 | |
33ca954d DH |
1797 | error = hci_add_sysfs(hdev); |
1798 | if (error < 0) | |
1799 | goto err_wqueue; | |
1da177e4 | 1800 | |
611b30f7 | 1801 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
1802 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
1803 | hdev); | |
611b30f7 MH |
1804 | if (hdev->rfkill) { |
1805 | if (rfkill_register(hdev->rfkill) < 0) { | |
1806 | rfkill_destroy(hdev->rfkill); | |
1807 | hdev->rfkill = NULL; | |
1808 | } | |
1809 | } | |
1810 | ||
a8b2d5c2 | 1811 | set_bit(HCI_SETUP, &hdev->dev_flags); |
ce2be9ac AE |
1812 | |
1813 | if (hdev->dev_type != HCI_AMP) | |
1814 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); | |
1815 | ||
7f971041 | 1816 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1817 | |
1da177e4 | 1818 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 1819 | hci_dev_hold(hdev); |
1da177e4 LT |
1820 | |
1821 | return id; | |
f48fd9c8 | 1822 | |
33ca954d DH |
1823 | err_wqueue: |
1824 | destroy_workqueue(hdev->workqueue); | |
1825 | err: | |
3df92b31 | 1826 | ida_simple_remove(&hci_index_ida, hdev->id); |
f20d09d5 | 1827 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1828 | list_del(&hdev->list); |
f20d09d5 | 1829 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1830 | |
33ca954d | 1831 | return error; |
1da177e4 LT |
1832 | } |
1833 | EXPORT_SYMBOL(hci_register_dev); | |
1834 | ||
1835 | /* Unregister HCI device */ | |
59735631 | 1836 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1837 | { |
3df92b31 | 1838 | int i, id; |
ef222013 | 1839 | |
c13854ce | 1840 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1841 | |
94324962 JH |
1842 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
1843 | ||
3df92b31 SL |
1844 | id = hdev->id; |
1845 | ||
f20d09d5 | 1846 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1847 | list_del(&hdev->list); |
f20d09d5 | 1848 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1849 | |
1850 | hci_dev_do_close(hdev); | |
1851 | ||
cd4c5391 | 1852 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1853 | kfree_skb(hdev->reassembly[i]); |
1854 | ||
ab81cbf9 | 1855 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 1856 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 1857 | hci_dev_lock(hdev); |
744cf19e | 1858 | mgmt_index_removed(hdev); |
09fd0de5 | 1859 | hci_dev_unlock(hdev); |
56e5cb86 | 1860 | } |
ab81cbf9 | 1861 | |
2e58ef3e JH |
1862 | /* mgmt_index_removed should take care of emptying the |
1863 | * pending list */ | |
1864 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1865 | ||
1da177e4 LT |
1866 | hci_notify(hdev, HCI_DEV_UNREG); |
1867 | ||
611b30f7 MH |
1868 | if (hdev->rfkill) { |
1869 | rfkill_unregister(hdev->rfkill); | |
1870 | rfkill_destroy(hdev->rfkill); | |
1871 | } | |
1872 | ||
ce242970 | 1873 | hci_del_sysfs(hdev); |
147e2d59 | 1874 | |
f48fd9c8 MH |
1875 | destroy_workqueue(hdev->workqueue); |
1876 | ||
09fd0de5 | 1877 | hci_dev_lock(hdev); |
e2e0cacb | 1878 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1879 | hci_uuids_clear(hdev); |
55ed8ca1 | 1880 | hci_link_keys_clear(hdev); |
b899efaf | 1881 | hci_smp_ltks_clear(hdev); |
2763eda6 | 1882 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 1883 | hci_dev_unlock(hdev); |
e2e0cacb | 1884 | |
dc946bd8 | 1885 | hci_dev_put(hdev); |
3df92b31 SL |
1886 | |
1887 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
1888 | } |
1889 | EXPORT_SYMBOL(hci_unregister_dev); | |
1890 | ||
1891 | /* Suspend HCI device */ | |
1892 | int hci_suspend_dev(struct hci_dev *hdev) | |
1893 | { | |
1894 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1895 | return 0; | |
1896 | } | |
1897 | EXPORT_SYMBOL(hci_suspend_dev); | |
1898 | ||
1899 | /* Resume HCI device */ | |
1900 | int hci_resume_dev(struct hci_dev *hdev) | |
1901 | { | |
1902 | hci_notify(hdev, HCI_DEV_RESUME); | |
1903 | return 0; | |
1904 | } | |
1905 | EXPORT_SYMBOL(hci_resume_dev); | |
1906 | ||
76bca880 MH |
1907 | /* Receive frame from HCI drivers */ |
1908 | int hci_recv_frame(struct sk_buff *skb) | |
1909 | { | |
1910 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1911 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 1912 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
1913 | kfree_skb(skb); |
1914 | return -ENXIO; | |
1915 | } | |
1916 | ||
1917 | /* Incomming skb */ | |
1918 | bt_cb(skb)->incoming = 1; | |
1919 | ||
1920 | /* Time stamp */ | |
1921 | __net_timestamp(skb); | |
1922 | ||
76bca880 | 1923 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1924 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1925 | |
76bca880 MH |
1926 | return 0; |
1927 | } | |
1928 | EXPORT_SYMBOL(hci_recv_frame); | |
1929 | ||
33e882a5 | 1930 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 1931 | int count, __u8 index) |
33e882a5 SS |
1932 | { |
1933 | int len = 0; | |
1934 | int hlen = 0; | |
1935 | int remain = count; | |
1936 | struct sk_buff *skb; | |
1937 | struct bt_skb_cb *scb; | |
1938 | ||
1939 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 1940 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
1941 | return -EILSEQ; |
1942 | ||
1943 | skb = hdev->reassembly[index]; | |
1944 | ||
1945 | if (!skb) { | |
1946 | switch (type) { | |
1947 | case HCI_ACLDATA_PKT: | |
1948 | len = HCI_MAX_FRAME_SIZE; | |
1949 | hlen = HCI_ACL_HDR_SIZE; | |
1950 | break; | |
1951 | case HCI_EVENT_PKT: | |
1952 | len = HCI_MAX_EVENT_SIZE; | |
1953 | hlen = HCI_EVENT_HDR_SIZE; | |
1954 | break; | |
1955 | case HCI_SCODATA_PKT: | |
1956 | len = HCI_MAX_SCO_SIZE; | |
1957 | hlen = HCI_SCO_HDR_SIZE; | |
1958 | break; | |
1959 | } | |
1960 | ||
1e429f38 | 1961 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1962 | if (!skb) |
1963 | return -ENOMEM; | |
1964 | ||
1965 | scb = (void *) skb->cb; | |
1966 | scb->expect = hlen; | |
1967 | scb->pkt_type = type; | |
1968 | ||
1969 | skb->dev = (void *) hdev; | |
1970 | hdev->reassembly[index] = skb; | |
1971 | } | |
1972 | ||
1973 | while (count) { | |
1974 | scb = (void *) skb->cb; | |
89bb46d0 | 1975 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
1976 | |
1977 | memcpy(skb_put(skb, len), data, len); | |
1978 | ||
1979 | count -= len; | |
1980 | data += len; | |
1981 | scb->expect -= len; | |
1982 | remain = count; | |
1983 | ||
1984 | switch (type) { | |
1985 | case HCI_EVENT_PKT: | |
1986 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1987 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1988 | scb->expect = h->plen; | |
1989 | ||
1990 | if (skb_tailroom(skb) < scb->expect) { | |
1991 | kfree_skb(skb); | |
1992 | hdev->reassembly[index] = NULL; | |
1993 | return -ENOMEM; | |
1994 | } | |
1995 | } | |
1996 | break; | |
1997 | ||
1998 | case HCI_ACLDATA_PKT: | |
1999 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2000 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2001 | scb->expect = __le16_to_cpu(h->dlen); | |
2002 | ||
2003 | if (skb_tailroom(skb) < scb->expect) { | |
2004 | kfree_skb(skb); | |
2005 | hdev->reassembly[index] = NULL; | |
2006 | return -ENOMEM; | |
2007 | } | |
2008 | } | |
2009 | break; | |
2010 | ||
2011 | case HCI_SCODATA_PKT: | |
2012 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2013 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2014 | scb->expect = h->dlen; | |
2015 | ||
2016 | if (skb_tailroom(skb) < scb->expect) { | |
2017 | kfree_skb(skb); | |
2018 | hdev->reassembly[index] = NULL; | |
2019 | return -ENOMEM; | |
2020 | } | |
2021 | } | |
2022 | break; | |
2023 | } | |
2024 | ||
2025 | if (scb->expect == 0) { | |
2026 | /* Complete frame */ | |
2027 | ||
2028 | bt_cb(skb)->pkt_type = type; | |
2029 | hci_recv_frame(skb); | |
2030 | ||
2031 | hdev->reassembly[index] = NULL; | |
2032 | return remain; | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | return remain; | |
2037 | } | |
2038 | ||
ef222013 MH |
2039 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2040 | { | |
f39a3c06 SS |
2041 | int rem = 0; |
2042 | ||
ef222013 MH |
2043 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2044 | return -EILSEQ; | |
2045 | ||
da5f6c37 | 2046 | while (count) { |
1e429f38 | 2047 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2048 | if (rem < 0) |
2049 | return rem; | |
ef222013 | 2050 | |
f39a3c06 SS |
2051 | data += (count - rem); |
2052 | count = rem; | |
f81c6224 | 2053 | } |
ef222013 | 2054 | |
f39a3c06 | 2055 | return rem; |
ef222013 MH |
2056 | } |
2057 | EXPORT_SYMBOL(hci_recv_fragment); | |
2058 | ||
99811510 SS |
2059 | #define STREAM_REASSEMBLY 0 |
2060 | ||
2061 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2062 | { | |
2063 | int type; | |
2064 | int rem = 0; | |
2065 | ||
da5f6c37 | 2066 | while (count) { |
99811510 SS |
2067 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2068 | ||
2069 | if (!skb) { | |
2070 | struct { char type; } *pkt; | |
2071 | ||
2072 | /* Start of the frame */ | |
2073 | pkt = data; | |
2074 | type = pkt->type; | |
2075 | ||
2076 | data++; | |
2077 | count--; | |
2078 | } else | |
2079 | type = bt_cb(skb)->pkt_type; | |
2080 | ||
1e429f38 | 2081 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2082 | STREAM_REASSEMBLY); |
99811510 SS |
2083 | if (rem < 0) |
2084 | return rem; | |
2085 | ||
2086 | data += (count - rem); | |
2087 | count = rem; | |
f81c6224 | 2088 | } |
99811510 SS |
2089 | |
2090 | return rem; | |
2091 | } | |
2092 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2093 | ||
1da177e4 LT |
2094 | /* ---- Interface to upper protocols ---- */ |
2095 | ||
1da177e4 LT |
2096 | int hci_register_cb(struct hci_cb *cb) |
2097 | { | |
2098 | BT_DBG("%p name %s", cb, cb->name); | |
2099 | ||
f20d09d5 | 2100 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2101 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2102 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2103 | |
2104 | return 0; | |
2105 | } | |
2106 | EXPORT_SYMBOL(hci_register_cb); | |
2107 | ||
2108 | int hci_unregister_cb(struct hci_cb *cb) | |
2109 | { | |
2110 | BT_DBG("%p name %s", cb, cb->name); | |
2111 | ||
f20d09d5 | 2112 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2113 | list_del(&cb->list); |
f20d09d5 | 2114 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2115 | |
2116 | return 0; | |
2117 | } | |
2118 | EXPORT_SYMBOL(hci_unregister_cb); | |
2119 | ||
2120 | static int hci_send_frame(struct sk_buff *skb) | |
2121 | { | |
2122 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2123 | ||
2124 | if (!hdev) { | |
2125 | kfree_skb(skb); | |
2126 | return -ENODEV; | |
2127 | } | |
2128 | ||
0d48d939 | 2129 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2130 | |
cd82e61c MH |
2131 | /* Time stamp */ |
2132 | __net_timestamp(skb); | |
1da177e4 | 2133 | |
cd82e61c MH |
2134 | /* Send copy to monitor */ |
2135 | hci_send_to_monitor(hdev, skb); | |
2136 | ||
2137 | if (atomic_read(&hdev->promisc)) { | |
2138 | /* Send copy to the sockets */ | |
470fe1b5 | 2139 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2140 | } |
2141 | ||
2142 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2143 | skb_orphan(skb); | |
2144 | ||
2145 | return hdev->send(skb); | |
2146 | } | |
2147 | ||
2148 | /* Send HCI command */ | |
a9de9248 | 2149 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
2150 | { |
2151 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2152 | struct hci_command_hdr *hdr; | |
2153 | struct sk_buff *skb; | |
2154 | ||
f0e09510 | 2155 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
2156 | |
2157 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
2158 | if (!skb) { | |
ef222013 | 2159 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
2160 | return -ENOMEM; |
2161 | } | |
2162 | ||
2163 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2164 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2165 | hdr->plen = plen; |
2166 | ||
2167 | if (plen) | |
2168 | memcpy(skb_put(skb, plen), param, plen); | |
2169 | ||
2170 | BT_DBG("skb len %d", skb->len); | |
2171 | ||
0d48d939 | 2172 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2173 | skb->dev = (void *) hdev; |
c78ae283 | 2174 | |
a5040efa JH |
2175 | if (test_bit(HCI_INIT, &hdev->flags)) |
2176 | hdev->init_last_cmd = opcode; | |
2177 | ||
1da177e4 | 2178 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2179 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2180 | |
2181 | return 0; | |
2182 | } | |
1da177e4 LT |
2183 | |
2184 | /* Get data from the previously sent command */ | |
a9de9248 | 2185 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2186 | { |
2187 | struct hci_command_hdr *hdr; | |
2188 | ||
2189 | if (!hdev->sent_cmd) | |
2190 | return NULL; | |
2191 | ||
2192 | hdr = (void *) hdev->sent_cmd->data; | |
2193 | ||
a9de9248 | 2194 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2195 | return NULL; |
2196 | ||
f0e09510 | 2197 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2198 | |
2199 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2200 | } | |
2201 | ||
2202 | /* Send ACL data */ | |
2203 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2204 | { | |
2205 | struct hci_acl_hdr *hdr; | |
2206 | int len = skb->len; | |
2207 | ||
badff6d0 ACM |
2208 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2209 | skb_reset_transport_header(skb); | |
9c70220b | 2210 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2211 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2212 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2213 | } |
2214 | ||
ee22be7e | 2215 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2216 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2217 | { |
ee22be7e | 2218 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2219 | struct hci_dev *hdev = conn->hdev; |
2220 | struct sk_buff *list; | |
2221 | ||
087bfd99 GP |
2222 | skb->len = skb_headlen(skb); |
2223 | skb->data_len = 0; | |
2224 | ||
2225 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
2226 | |
2227 | switch (hdev->dev_type) { | |
2228 | case HCI_BREDR: | |
2229 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2230 | break; | |
2231 | case HCI_AMP: | |
2232 | hci_add_acl_hdr(skb, chan->handle, flags); | |
2233 | break; | |
2234 | default: | |
2235 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
2236 | return; | |
2237 | } | |
087bfd99 | 2238 | |
70f23020 AE |
2239 | list = skb_shinfo(skb)->frag_list; |
2240 | if (!list) { | |
1da177e4 LT |
2241 | /* Non fragmented */ |
2242 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2243 | ||
73d80deb | 2244 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2245 | } else { |
2246 | /* Fragmented */ | |
2247 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2248 | ||
2249 | skb_shinfo(skb)->frag_list = NULL; | |
2250 | ||
2251 | /* Queue all fragments atomically */ | |
af3e6359 | 2252 | spin_lock(&queue->lock); |
1da177e4 | 2253 | |
73d80deb | 2254 | __skb_queue_tail(queue, skb); |
e702112f AE |
2255 | |
2256 | flags &= ~ACL_START; | |
2257 | flags |= ACL_CONT; | |
1da177e4 LT |
2258 | do { |
2259 | skb = list; list = list->next; | |
8e87d142 | 2260 | |
1da177e4 | 2261 | skb->dev = (void *) hdev; |
0d48d939 | 2262 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2263 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2264 | |
2265 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2266 | ||
73d80deb | 2267 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2268 | } while (list); |
2269 | ||
af3e6359 | 2270 | spin_unlock(&queue->lock); |
1da177e4 | 2271 | } |
73d80deb LAD |
2272 | } |
2273 | ||
2274 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2275 | { | |
ee22be7e | 2276 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 2277 | |
f0e09510 | 2278 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb LAD |
2279 | |
2280 | skb->dev = (void *) hdev; | |
73d80deb | 2281 | |
ee22be7e | 2282 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 2283 | |
3eff45ea | 2284 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2285 | } |
1da177e4 LT |
2286 | |
2287 | /* Send SCO data */ | |
0d861d8b | 2288 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2289 | { |
2290 | struct hci_dev *hdev = conn->hdev; | |
2291 | struct hci_sco_hdr hdr; | |
2292 | ||
2293 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2294 | ||
aca3192c | 2295 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2296 | hdr.dlen = skb->len; |
2297 | ||
badff6d0 ACM |
2298 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2299 | skb_reset_transport_header(skb); | |
9c70220b | 2300 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2301 | |
2302 | skb->dev = (void *) hdev; | |
0d48d939 | 2303 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2304 | |
1da177e4 | 2305 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2306 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2307 | } |
1da177e4 LT |
2308 | |
2309 | /* ---- HCI TX task (outgoing data) ---- */ | |
2310 | ||
2311 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2312 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2313 | int *quote) | |
1da177e4 LT |
2314 | { |
2315 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2316 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2317 | unsigned int num = 0, min = ~0; |
1da177e4 | 2318 | |
8e87d142 | 2319 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2320 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2321 | |
2322 | rcu_read_lock(); | |
2323 | ||
2324 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2325 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2326 | continue; |
769be974 MH |
2327 | |
2328 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2329 | continue; | |
2330 | ||
1da177e4 LT |
2331 | num++; |
2332 | ||
2333 | if (c->sent < min) { | |
2334 | min = c->sent; | |
2335 | conn = c; | |
2336 | } | |
52087a79 LAD |
2337 | |
2338 | if (hci_conn_num(hdev, type) == num) | |
2339 | break; | |
1da177e4 LT |
2340 | } |
2341 | ||
bf4c6325 GP |
2342 | rcu_read_unlock(); |
2343 | ||
1da177e4 | 2344 | if (conn) { |
6ed58ec5 VT |
2345 | int cnt, q; |
2346 | ||
2347 | switch (conn->type) { | |
2348 | case ACL_LINK: | |
2349 | cnt = hdev->acl_cnt; | |
2350 | break; | |
2351 | case SCO_LINK: | |
2352 | case ESCO_LINK: | |
2353 | cnt = hdev->sco_cnt; | |
2354 | break; | |
2355 | case LE_LINK: | |
2356 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2357 | break; | |
2358 | default: | |
2359 | cnt = 0; | |
2360 | BT_ERR("Unknown link type"); | |
2361 | } | |
2362 | ||
2363 | q = cnt / num; | |
1da177e4 LT |
2364 | *quote = q ? q : 1; |
2365 | } else | |
2366 | *quote = 0; | |
2367 | ||
2368 | BT_DBG("conn %p quote %d", conn, *quote); | |
2369 | return conn; | |
2370 | } | |
2371 | ||
6039aa73 | 2372 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2373 | { |
2374 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2375 | struct hci_conn *c; |
1da177e4 | 2376 | |
bae1f5d9 | 2377 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2378 | |
bf4c6325 GP |
2379 | rcu_read_lock(); |
2380 | ||
1da177e4 | 2381 | /* Kill stalled connections */ |
bf4c6325 | 2382 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 2383 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
2384 | BT_ERR("%s killing stalled connection %pMR", |
2385 | hdev->name, &c->dst); | |
7490c6c2 | 2386 | hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2387 | } |
2388 | } | |
bf4c6325 GP |
2389 | |
2390 | rcu_read_unlock(); | |
1da177e4 LT |
2391 | } |
2392 | ||
6039aa73 GP |
2393 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2394 | int *quote) | |
1da177e4 | 2395 | { |
73d80deb LAD |
2396 | struct hci_conn_hash *h = &hdev->conn_hash; |
2397 | struct hci_chan *chan = NULL; | |
abc5de8f | 2398 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2399 | struct hci_conn *conn; |
73d80deb LAD |
2400 | int cnt, q, conn_num = 0; |
2401 | ||
2402 | BT_DBG("%s", hdev->name); | |
2403 | ||
bf4c6325 GP |
2404 | rcu_read_lock(); |
2405 | ||
2406 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2407 | struct hci_chan *tmp; |
2408 | ||
2409 | if (conn->type != type) | |
2410 | continue; | |
2411 | ||
2412 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2413 | continue; | |
2414 | ||
2415 | conn_num++; | |
2416 | ||
8192edef | 2417 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2418 | struct sk_buff *skb; |
2419 | ||
2420 | if (skb_queue_empty(&tmp->data_q)) | |
2421 | continue; | |
2422 | ||
2423 | skb = skb_peek(&tmp->data_q); | |
2424 | if (skb->priority < cur_prio) | |
2425 | continue; | |
2426 | ||
2427 | if (skb->priority > cur_prio) { | |
2428 | num = 0; | |
2429 | min = ~0; | |
2430 | cur_prio = skb->priority; | |
2431 | } | |
2432 | ||
2433 | num++; | |
2434 | ||
2435 | if (conn->sent < min) { | |
2436 | min = conn->sent; | |
2437 | chan = tmp; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | if (hci_conn_num(hdev, type) == conn_num) | |
2442 | break; | |
2443 | } | |
2444 | ||
bf4c6325 GP |
2445 | rcu_read_unlock(); |
2446 | ||
73d80deb LAD |
2447 | if (!chan) |
2448 | return NULL; | |
2449 | ||
2450 | switch (chan->conn->type) { | |
2451 | case ACL_LINK: | |
2452 | cnt = hdev->acl_cnt; | |
2453 | break; | |
bd1eb66b AE |
2454 | case AMP_LINK: |
2455 | cnt = hdev->block_cnt; | |
2456 | break; | |
73d80deb LAD |
2457 | case SCO_LINK: |
2458 | case ESCO_LINK: | |
2459 | cnt = hdev->sco_cnt; | |
2460 | break; | |
2461 | case LE_LINK: | |
2462 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2463 | break; | |
2464 | default: | |
2465 | cnt = 0; | |
2466 | BT_ERR("Unknown link type"); | |
2467 | } | |
2468 | ||
2469 | q = cnt / num; | |
2470 | *quote = q ? q : 1; | |
2471 | BT_DBG("chan %p quote %d", chan, *quote); | |
2472 | return chan; | |
2473 | } | |
2474 | ||
02b20f0b LAD |
2475 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2476 | { | |
2477 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2478 | struct hci_conn *conn; | |
2479 | int num = 0; | |
2480 | ||
2481 | BT_DBG("%s", hdev->name); | |
2482 | ||
bf4c6325 GP |
2483 | rcu_read_lock(); |
2484 | ||
2485 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2486 | struct hci_chan *chan; |
2487 | ||
2488 | if (conn->type != type) | |
2489 | continue; | |
2490 | ||
2491 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2492 | continue; | |
2493 | ||
2494 | num++; | |
2495 | ||
8192edef | 2496 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2497 | struct sk_buff *skb; |
2498 | ||
2499 | if (chan->sent) { | |
2500 | chan->sent = 0; | |
2501 | continue; | |
2502 | } | |
2503 | ||
2504 | if (skb_queue_empty(&chan->data_q)) | |
2505 | continue; | |
2506 | ||
2507 | skb = skb_peek(&chan->data_q); | |
2508 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2509 | continue; | |
2510 | ||
2511 | skb->priority = HCI_PRIO_MAX - 1; | |
2512 | ||
2513 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 2514 | skb->priority); |
02b20f0b LAD |
2515 | } |
2516 | ||
2517 | if (hci_conn_num(hdev, type) == num) | |
2518 | break; | |
2519 | } | |
bf4c6325 GP |
2520 | |
2521 | rcu_read_unlock(); | |
2522 | ||
02b20f0b LAD |
2523 | } |
2524 | ||
b71d385a AE |
2525 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
2526 | { | |
2527 | /* Calculate count of blocks used by this packet */ | |
2528 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
2529 | } | |
2530 | ||
6039aa73 | 2531 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 2532 | { |
1da177e4 LT |
2533 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2534 | /* ACL tx timeout must be longer than maximum | |
2535 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 2536 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 2537 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 2538 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 2539 | } |
63d2bc1b | 2540 | } |
1da177e4 | 2541 | |
6039aa73 | 2542 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
2543 | { |
2544 | unsigned int cnt = hdev->acl_cnt; | |
2545 | struct hci_chan *chan; | |
2546 | struct sk_buff *skb; | |
2547 | int quote; | |
2548 | ||
2549 | __check_timeout(hdev, cnt); | |
04837f64 | 2550 | |
73d80deb | 2551 | while (hdev->acl_cnt && |
a8c5fb1a | 2552 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
2553 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2554 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2555 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2556 | skb->len, skb->priority); |
73d80deb | 2557 | |
ec1cce24 LAD |
2558 | /* Stop if priority has changed */ |
2559 | if (skb->priority < priority) | |
2560 | break; | |
2561 | ||
2562 | skb = skb_dequeue(&chan->data_q); | |
2563 | ||
73d80deb | 2564 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 2565 | bt_cb(skb)->force_active); |
04837f64 | 2566 | |
1da177e4 LT |
2567 | hci_send_frame(skb); |
2568 | hdev->acl_last_tx = jiffies; | |
2569 | ||
2570 | hdev->acl_cnt--; | |
73d80deb LAD |
2571 | chan->sent++; |
2572 | chan->conn->sent++; | |
1da177e4 LT |
2573 | } |
2574 | } | |
02b20f0b LAD |
2575 | |
2576 | if (cnt != hdev->acl_cnt) | |
2577 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2578 | } |
2579 | ||
6039aa73 | 2580 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 2581 | { |
63d2bc1b | 2582 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
2583 | struct hci_chan *chan; |
2584 | struct sk_buff *skb; | |
2585 | int quote; | |
bd1eb66b | 2586 | u8 type; |
b71d385a | 2587 | |
63d2bc1b | 2588 | __check_timeout(hdev, cnt); |
b71d385a | 2589 | |
bd1eb66b AE |
2590 | BT_DBG("%s", hdev->name); |
2591 | ||
2592 | if (hdev->dev_type == HCI_AMP) | |
2593 | type = AMP_LINK; | |
2594 | else | |
2595 | type = ACL_LINK; | |
2596 | ||
b71d385a | 2597 | while (hdev->block_cnt > 0 && |
bd1eb66b | 2598 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
2599 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2600 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
2601 | int blocks; | |
2602 | ||
2603 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 2604 | skb->len, skb->priority); |
b71d385a AE |
2605 | |
2606 | /* Stop if priority has changed */ | |
2607 | if (skb->priority < priority) | |
2608 | break; | |
2609 | ||
2610 | skb = skb_dequeue(&chan->data_q); | |
2611 | ||
2612 | blocks = __get_blocks(hdev, skb); | |
2613 | if (blocks > hdev->block_cnt) | |
2614 | return; | |
2615 | ||
2616 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 2617 | bt_cb(skb)->force_active); |
b71d385a AE |
2618 | |
2619 | hci_send_frame(skb); | |
2620 | hdev->acl_last_tx = jiffies; | |
2621 | ||
2622 | hdev->block_cnt -= blocks; | |
2623 | quote -= blocks; | |
2624 | ||
2625 | chan->sent += blocks; | |
2626 | chan->conn->sent += blocks; | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 2631 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
2632 | } |
2633 | ||
6039aa73 | 2634 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
2635 | { |
2636 | BT_DBG("%s", hdev->name); | |
2637 | ||
bd1eb66b AE |
2638 | /* No ACL link over BR/EDR controller */ |
2639 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
2640 | return; | |
2641 | ||
2642 | /* No AMP link over AMP controller */ | |
2643 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
2644 | return; |
2645 | ||
2646 | switch (hdev->flow_ctl_mode) { | |
2647 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
2648 | hci_sched_acl_pkt(hdev); | |
2649 | break; | |
2650 | ||
2651 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
2652 | hci_sched_acl_blk(hdev); | |
2653 | break; | |
2654 | } | |
2655 | } | |
2656 | ||
1da177e4 | 2657 | /* Schedule SCO */ |
6039aa73 | 2658 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
2659 | { |
2660 | struct hci_conn *conn; | |
2661 | struct sk_buff *skb; | |
2662 | int quote; | |
2663 | ||
2664 | BT_DBG("%s", hdev->name); | |
2665 | ||
52087a79 LAD |
2666 | if (!hci_conn_num(hdev, SCO_LINK)) |
2667 | return; | |
2668 | ||
1da177e4 LT |
2669 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2670 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2671 | BT_DBG("skb %p len %d", skb, skb->len); | |
2672 | hci_send_frame(skb); | |
2673 | ||
2674 | conn->sent++; | |
2675 | if (conn->sent == ~0) | |
2676 | conn->sent = 0; | |
2677 | } | |
2678 | } | |
2679 | } | |
2680 | ||
6039aa73 | 2681 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
2682 | { |
2683 | struct hci_conn *conn; | |
2684 | struct sk_buff *skb; | |
2685 | int quote; | |
2686 | ||
2687 | BT_DBG("%s", hdev->name); | |
2688 | ||
52087a79 LAD |
2689 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2690 | return; | |
2691 | ||
8fc9ced3 GP |
2692 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
2693 | "e))) { | |
b6a0dc82 MH |
2694 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
2695 | BT_DBG("skb %p len %d", skb, skb->len); | |
2696 | hci_send_frame(skb); | |
2697 | ||
2698 | conn->sent++; | |
2699 | if (conn->sent == ~0) | |
2700 | conn->sent = 0; | |
2701 | } | |
2702 | } | |
2703 | } | |
2704 | ||
6039aa73 | 2705 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 2706 | { |
73d80deb | 2707 | struct hci_chan *chan; |
6ed58ec5 | 2708 | struct sk_buff *skb; |
02b20f0b | 2709 | int quote, cnt, tmp; |
6ed58ec5 VT |
2710 | |
2711 | BT_DBG("%s", hdev->name); | |
2712 | ||
52087a79 LAD |
2713 | if (!hci_conn_num(hdev, LE_LINK)) |
2714 | return; | |
2715 | ||
6ed58ec5 VT |
2716 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2717 | /* LE tx timeout must be longer than maximum | |
2718 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2719 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 2720 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2721 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2722 | } |
2723 | ||
2724 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2725 | tmp = cnt; |
73d80deb | 2726 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2727 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2728 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2729 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2730 | skb->len, skb->priority); |
6ed58ec5 | 2731 | |
ec1cce24 LAD |
2732 | /* Stop if priority has changed */ |
2733 | if (skb->priority < priority) | |
2734 | break; | |
2735 | ||
2736 | skb = skb_dequeue(&chan->data_q); | |
2737 | ||
6ed58ec5 VT |
2738 | hci_send_frame(skb); |
2739 | hdev->le_last_tx = jiffies; | |
2740 | ||
2741 | cnt--; | |
73d80deb LAD |
2742 | chan->sent++; |
2743 | chan->conn->sent++; | |
6ed58ec5 VT |
2744 | } |
2745 | } | |
73d80deb | 2746 | |
6ed58ec5 VT |
2747 | if (hdev->le_pkts) |
2748 | hdev->le_cnt = cnt; | |
2749 | else | |
2750 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2751 | |
2752 | if (cnt != tmp) | |
2753 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2754 | } |
2755 | ||
3eff45ea | 2756 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2757 | { |
3eff45ea | 2758 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2759 | struct sk_buff *skb; |
2760 | ||
6ed58ec5 | 2761 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 2762 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
2763 | |
2764 | /* Schedule queues and send stuff to HCI driver */ | |
2765 | ||
2766 | hci_sched_acl(hdev); | |
2767 | ||
2768 | hci_sched_sco(hdev); | |
2769 | ||
b6a0dc82 MH |
2770 | hci_sched_esco(hdev); |
2771 | ||
6ed58ec5 VT |
2772 | hci_sched_le(hdev); |
2773 | ||
1da177e4 LT |
2774 | /* Send next queued raw (unknown type) packet */ |
2775 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2776 | hci_send_frame(skb); | |
1da177e4 LT |
2777 | } |
2778 | ||
25985edc | 2779 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2780 | |
2781 | /* ACL data packet */ | |
6039aa73 | 2782 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2783 | { |
2784 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2785 | struct hci_conn *conn; | |
2786 | __u16 handle, flags; | |
2787 | ||
2788 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2789 | ||
2790 | handle = __le16_to_cpu(hdr->handle); | |
2791 | flags = hci_flags(handle); | |
2792 | handle = hci_handle(handle); | |
2793 | ||
f0e09510 | 2794 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 2795 | handle, flags); |
1da177e4 LT |
2796 | |
2797 | hdev->stat.acl_rx++; | |
2798 | ||
2799 | hci_dev_lock(hdev); | |
2800 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2801 | hci_dev_unlock(hdev); | |
8e87d142 | 2802 | |
1da177e4 | 2803 | if (conn) { |
65983fc7 | 2804 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2805 | |
671267bf JH |
2806 | hci_dev_lock(hdev); |
2807 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && | |
2808 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) | |
2809 | mgmt_device_connected(hdev, &conn->dst, conn->type, | |
2810 | conn->dst_type, 0, NULL, 0, | |
2811 | conn->dev_class); | |
2812 | hci_dev_unlock(hdev); | |
2813 | ||
1da177e4 | 2814 | /* Send to upper protocol */ |
686ebf28 UF |
2815 | l2cap_recv_acldata(conn, skb, flags); |
2816 | return; | |
1da177e4 | 2817 | } else { |
8e87d142 | 2818 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 2819 | hdev->name, handle); |
1da177e4 LT |
2820 | } |
2821 | ||
2822 | kfree_skb(skb); | |
2823 | } | |
2824 | ||
2825 | /* SCO data packet */ | |
6039aa73 | 2826 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2827 | { |
2828 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2829 | struct hci_conn *conn; | |
2830 | __u16 handle; | |
2831 | ||
2832 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2833 | ||
2834 | handle = __le16_to_cpu(hdr->handle); | |
2835 | ||
f0e09510 | 2836 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
2837 | |
2838 | hdev->stat.sco_rx++; | |
2839 | ||
2840 | hci_dev_lock(hdev); | |
2841 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2842 | hci_dev_unlock(hdev); | |
2843 | ||
2844 | if (conn) { | |
1da177e4 | 2845 | /* Send to upper protocol */ |
686ebf28 UF |
2846 | sco_recv_scodata(conn, skb); |
2847 | return; | |
1da177e4 | 2848 | } else { |
8e87d142 | 2849 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 2850 | hdev->name, handle); |
1da177e4 LT |
2851 | } |
2852 | ||
2853 | kfree_skb(skb); | |
2854 | } | |
2855 | ||
b78752cc | 2856 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2857 | { |
b78752cc | 2858 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2859 | struct sk_buff *skb; |
2860 | ||
2861 | BT_DBG("%s", hdev->name); | |
2862 | ||
1da177e4 | 2863 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
2864 | /* Send copy to monitor */ |
2865 | hci_send_to_monitor(hdev, skb); | |
2866 | ||
1da177e4 LT |
2867 | if (atomic_read(&hdev->promisc)) { |
2868 | /* Send copy to the sockets */ | |
470fe1b5 | 2869 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2870 | } |
2871 | ||
2872 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2873 | kfree_skb(skb); | |
2874 | continue; | |
2875 | } | |
2876 | ||
2877 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2878 | /* Don't process data packets in this states. */ | |
0d48d939 | 2879 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2880 | case HCI_ACLDATA_PKT: |
2881 | case HCI_SCODATA_PKT: | |
2882 | kfree_skb(skb); | |
2883 | continue; | |
3ff50b79 | 2884 | } |
1da177e4 LT |
2885 | } |
2886 | ||
2887 | /* Process frame */ | |
0d48d939 | 2888 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2889 | case HCI_EVENT_PKT: |
b78752cc | 2890 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2891 | hci_event_packet(hdev, skb); |
2892 | break; | |
2893 | ||
2894 | case HCI_ACLDATA_PKT: | |
2895 | BT_DBG("%s ACL data packet", hdev->name); | |
2896 | hci_acldata_packet(hdev, skb); | |
2897 | break; | |
2898 | ||
2899 | case HCI_SCODATA_PKT: | |
2900 | BT_DBG("%s SCO data packet", hdev->name); | |
2901 | hci_scodata_packet(hdev, skb); | |
2902 | break; | |
2903 | ||
2904 | default: | |
2905 | kfree_skb(skb); | |
2906 | break; | |
2907 | } | |
2908 | } | |
1da177e4 LT |
2909 | } |
2910 | ||
c347b765 | 2911 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2912 | { |
c347b765 | 2913 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2914 | struct sk_buff *skb; |
2915 | ||
2104786b AE |
2916 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
2917 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 2918 | |
1da177e4 | 2919 | /* Send queued commands */ |
5a08ecce AE |
2920 | if (atomic_read(&hdev->cmd_cnt)) { |
2921 | skb = skb_dequeue(&hdev->cmd_q); | |
2922 | if (!skb) | |
2923 | return; | |
2924 | ||
7585b97a | 2925 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2926 | |
70f23020 AE |
2927 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2928 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2929 | atomic_dec(&hdev->cmd_cnt); |
2930 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2931 | if (test_bit(HCI_RESET, &hdev->flags)) |
2932 | del_timer(&hdev->cmd_timer); | |
2933 | else | |
2934 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 2935 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
2936 | } else { |
2937 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2938 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2939 | } |
2940 | } | |
2941 | } | |
2519a1fc AG |
2942 | |
2943 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2944 | { | |
2945 | /* General inquiry access code (GIAC) */ | |
2946 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2947 | struct hci_cp_inquiry cp; | |
2948 | ||
2949 | BT_DBG("%s", hdev->name); | |
2950 | ||
2951 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2952 | return -EINPROGRESS; | |
2953 | ||
4663262c JH |
2954 | inquiry_cache_flush(hdev); |
2955 | ||
2519a1fc AG |
2956 | memset(&cp, 0, sizeof(cp)); |
2957 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2958 | cp.length = length; | |
2959 | ||
2960 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2961 | } | |
023d5049 AG |
2962 | |
2963 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2964 | { | |
2965 | BT_DBG("%s", hdev->name); | |
2966 | ||
2967 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 2968 | return -EALREADY; |
023d5049 AG |
2969 | |
2970 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2971 | } | |
31f7956c AG |
2972 | |
2973 | u8 bdaddr_to_le(u8 bdaddr_type) | |
2974 | { | |
2975 | switch (bdaddr_type) { | |
2976 | case BDADDR_LE_PUBLIC: | |
2977 | return ADDR_LE_DEV_PUBLIC; | |
2978 | ||
2979 | default: | |
2980 | /* Fallback to LE Random address type */ | |
2981 | return ADDR_LE_DEV_RANDOM; | |
2982 | } | |
2983 | } |