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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
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 | ||
ab81cbf9 JH |
36 | #define AUTO_OFF_TIMEOUT 2000 |
37 | ||
b78752cc | 38 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 39 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 40 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 41 | |
1da177e4 LT |
42 | /* HCI device list */ |
43 | LIST_HEAD(hci_dev_list); | |
44 | DEFINE_RWLOCK(hci_dev_list_lock); | |
45 | ||
46 | /* HCI callback list */ | |
47 | LIST_HEAD(hci_cb_list); | |
48 | DEFINE_RWLOCK(hci_cb_list_lock); | |
49 | ||
3df92b31 SL |
50 | /* HCI ID Numbering */ |
51 | static DEFINE_IDA(hci_index_ida); | |
52 | ||
1da177e4 LT |
53 | /* ---- HCI notifications ---- */ |
54 | ||
6516455d | 55 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 56 | { |
040030ef | 57 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
58 | } |
59 | ||
60 | /* ---- HCI requests ---- */ | |
61 | ||
23bb5763 | 62 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
1da177e4 | 63 | { |
23bb5763 JH |
64 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
65 | ||
a5040efa JH |
66 | /* If this is the init phase check if the completed command matches |
67 | * the last init command, and if not just return. | |
68 | */ | |
75fb0e32 JH |
69 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
70 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1036b890 | 71 | u16 opcode = __le16_to_cpu(sent->opcode); |
75fb0e32 JH |
72 | struct sk_buff *skb; |
73 | ||
74 | /* Some CSR based controllers generate a spontaneous | |
75 | * reset complete event during init and any pending | |
76 | * command will never be completed. In such a case we | |
77 | * need to resend whatever was the last sent | |
78 | * command. | |
79 | */ | |
80 | ||
1036b890 | 81 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
75fb0e32 JH |
82 | return; |
83 | ||
84 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); | |
85 | if (skb) { | |
86 | skb_queue_head(&hdev->cmd_q, skb); | |
87 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
88 | } | |
89 | ||
23bb5763 | 90 | return; |
75fb0e32 | 91 | } |
1da177e4 LT |
92 | |
93 | if (hdev->req_status == HCI_REQ_PEND) { | |
94 | hdev->req_result = result; | |
95 | hdev->req_status = HCI_REQ_DONE; | |
96 | wake_up_interruptible(&hdev->req_wait_q); | |
97 | } | |
98 | } | |
99 | ||
100 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
101 | { | |
102 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
103 | ||
104 | if (hdev->req_status == HCI_REQ_PEND) { | |
105 | hdev->req_result = err; | |
106 | hdev->req_status = HCI_REQ_CANCELED; | |
107 | wake_up_interruptible(&hdev->req_wait_q); | |
108 | } | |
109 | } | |
110 | ||
111 | /* Execute request and wait for completion. */ | |
a8c5fb1a GP |
112 | static int __hci_request(struct hci_dev *hdev, |
113 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
114 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
115 | { |
116 | DECLARE_WAITQUEUE(wait, current); | |
117 | int err = 0; | |
118 | ||
119 | BT_DBG("%s start", hdev->name); | |
120 | ||
121 | hdev->req_status = HCI_REQ_PEND; | |
122 | ||
123 | add_wait_queue(&hdev->req_wait_q, &wait); | |
124 | set_current_state(TASK_INTERRUPTIBLE); | |
125 | ||
126 | req(hdev, opt); | |
127 | schedule_timeout(timeout); | |
128 | ||
129 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
130 | ||
131 | if (signal_pending(current)) | |
132 | return -EINTR; | |
133 | ||
134 | switch (hdev->req_status) { | |
135 | case HCI_REQ_DONE: | |
e175072f | 136 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
137 | break; |
138 | ||
139 | case HCI_REQ_CANCELED: | |
140 | err = -hdev->req_result; | |
141 | break; | |
142 | ||
143 | default: | |
144 | err = -ETIMEDOUT; | |
145 | break; | |
3ff50b79 | 146 | } |
1da177e4 | 147 | |
a5040efa | 148 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
149 | |
150 | BT_DBG("%s end: err %d", hdev->name, err); | |
151 | ||
152 | return err; | |
153 | } | |
154 | ||
6039aa73 GP |
155 | static int hci_request(struct hci_dev *hdev, |
156 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
157 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
158 | { |
159 | int ret; | |
160 | ||
7c6a329e MH |
161 | if (!test_bit(HCI_UP, &hdev->flags)) |
162 | return -ENETDOWN; | |
163 | ||
1da177e4 LT |
164 | /* Serialize all requests */ |
165 | hci_req_lock(hdev); | |
166 | ret = __hci_request(hdev, req, opt, timeout); | |
167 | hci_req_unlock(hdev); | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
172 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
173 | { | |
174 | BT_DBG("%s %ld", hdev->name, opt); | |
175 | ||
176 | /* Reset device */ | |
f630cf0d | 177 | set_bit(HCI_RESET, &hdev->flags); |
a9de9248 | 178 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
179 | } |
180 | ||
e61ef499 | 181 | static void bredr_init(struct hci_dev *hdev) |
1da177e4 | 182 | { |
b0916ea0 | 183 | struct hci_cp_delete_stored_link_key cp; |
1ebb9252 | 184 | __le16 param; |
89f2783d | 185 | __u8 flt_type; |
1da177e4 | 186 | |
2455a3ea AE |
187 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
188 | ||
1da177e4 LT |
189 | /* Mandatory initialization */ |
190 | ||
191 | /* Reset */ | |
a6c511c6 | 192 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
e61ef499 AE |
193 | set_bit(HCI_RESET, &hdev->flags); |
194 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
f630cf0d | 195 | } |
1da177e4 LT |
196 | |
197 | /* Read Local Supported Features */ | |
a9de9248 | 198 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 199 | |
1143e5a6 | 200 | /* Read Local Version */ |
a9de9248 | 201 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1143e5a6 | 202 | |
1da177e4 | 203 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
a9de9248 | 204 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
1da177e4 | 205 | |
1da177e4 | 206 | /* Read BD Address */ |
a9de9248 MH |
207 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
208 | ||
209 | /* Read Class of Device */ | |
210 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); | |
211 | ||
212 | /* Read Local Name */ | |
213 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); | |
1da177e4 LT |
214 | |
215 | /* Read Voice Setting */ | |
a9de9248 | 216 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
1da177e4 LT |
217 | |
218 | /* Optional initialization */ | |
219 | ||
220 | /* Clear Event Filters */ | |
89f2783d | 221 | flt_type = HCI_FLT_CLEAR_ALL; |
a9de9248 | 222 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
1da177e4 | 223 | |
1da177e4 | 224 | /* Connection accept timeout ~20 secs */ |
82781e63 | 225 | param = __constant_cpu_to_le16(0x7d00); |
a9de9248 | 226 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
b0916ea0 JH |
227 | |
228 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
229 | cp.delete_all = 1; | |
230 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); | |
1da177e4 LT |
231 | } |
232 | ||
e61ef499 AE |
233 | static void amp_init(struct hci_dev *hdev) |
234 | { | |
2455a3ea AE |
235 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
236 | ||
e61ef499 AE |
237 | /* Reset */ |
238 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
239 | ||
240 | /* Read Local Version */ | |
241 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
6bcbc489 AE |
242 | |
243 | /* Read Local AMP Info */ | |
244 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); | |
e61ef499 AE |
245 | } |
246 | ||
247 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
248 | { | |
249 | struct sk_buff *skb; | |
250 | ||
251 | BT_DBG("%s %ld", hdev->name, opt); | |
252 | ||
253 | /* Driver initialization */ | |
254 | ||
255 | /* Special commands */ | |
256 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
257 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
258 | skb->dev = (void *) hdev; | |
259 | ||
260 | skb_queue_tail(&hdev->cmd_q, skb); | |
261 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
262 | } | |
263 | skb_queue_purge(&hdev->driver_init); | |
264 | ||
265 | switch (hdev->dev_type) { | |
266 | case HCI_BREDR: | |
267 | bredr_init(hdev); | |
268 | break; | |
269 | ||
270 | case HCI_AMP: | |
271 | amp_init(hdev); | |
272 | break; | |
273 | ||
274 | default: | |
275 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
276 | break; | |
277 | } | |
278 | ||
279 | } | |
280 | ||
6ed58ec5 VT |
281 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
282 | { | |
283 | BT_DBG("%s", hdev->name); | |
284 | ||
285 | /* Read LE buffer size */ | |
286 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); | |
287 | } | |
288 | ||
1da177e4 LT |
289 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
290 | { | |
291 | __u8 scan = opt; | |
292 | ||
293 | BT_DBG("%s %x", hdev->name, scan); | |
294 | ||
295 | /* Inquiry and Page scans */ | |
a9de9248 | 296 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
297 | } |
298 | ||
299 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
300 | { | |
301 | __u8 auth = opt; | |
302 | ||
303 | BT_DBG("%s %x", hdev->name, auth); | |
304 | ||
305 | /* Authentication */ | |
a9de9248 | 306 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
307 | } |
308 | ||
309 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
310 | { | |
311 | __u8 encrypt = opt; | |
312 | ||
313 | BT_DBG("%s %x", hdev->name, encrypt); | |
314 | ||
e4e8e37c | 315 | /* Encryption */ |
a9de9248 | 316 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
317 | } |
318 | ||
e4e8e37c MH |
319 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
320 | { | |
321 | __le16 policy = cpu_to_le16(opt); | |
322 | ||
a418b893 | 323 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
324 | |
325 | /* Default link policy */ | |
326 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
327 | } | |
328 | ||
8e87d142 | 329 | /* Get HCI device by index. |
1da177e4 LT |
330 | * Device is held on return. */ |
331 | struct hci_dev *hci_dev_get(int index) | |
332 | { | |
8035ded4 | 333 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
334 | |
335 | BT_DBG("%d", index); | |
336 | ||
337 | if (index < 0) | |
338 | return NULL; | |
339 | ||
340 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 341 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
342 | if (d->id == index) { |
343 | hdev = hci_dev_hold(d); | |
344 | break; | |
345 | } | |
346 | } | |
347 | read_unlock(&hci_dev_list_lock); | |
348 | return hdev; | |
349 | } | |
1da177e4 LT |
350 | |
351 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 352 | |
30dc78e1 JH |
353 | bool hci_discovery_active(struct hci_dev *hdev) |
354 | { | |
355 | struct discovery_state *discov = &hdev->discovery; | |
356 | ||
6fbe195d | 357 | switch (discov->state) { |
343f935b | 358 | case DISCOVERY_FINDING: |
6fbe195d | 359 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
360 | return true; |
361 | ||
6fbe195d AG |
362 | default: |
363 | return false; | |
364 | } | |
30dc78e1 JH |
365 | } |
366 | ||
ff9ef578 JH |
367 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
368 | { | |
369 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
370 | ||
371 | if (hdev->discovery.state == state) | |
372 | return; | |
373 | ||
374 | switch (state) { | |
375 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
376 | if (hdev->discovery.state != DISCOVERY_STARTING) |
377 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
378 | break; |
379 | case DISCOVERY_STARTING: | |
380 | break; | |
343f935b | 381 | case DISCOVERY_FINDING: |
ff9ef578 JH |
382 | mgmt_discovering(hdev, 1); |
383 | break; | |
30dc78e1 JH |
384 | case DISCOVERY_RESOLVING: |
385 | break; | |
ff9ef578 JH |
386 | case DISCOVERY_STOPPING: |
387 | break; | |
388 | } | |
389 | ||
390 | hdev->discovery.state = state; | |
391 | } | |
392 | ||
1da177e4 LT |
393 | static void inquiry_cache_flush(struct hci_dev *hdev) |
394 | { | |
30883512 | 395 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 396 | struct inquiry_entry *p, *n; |
1da177e4 | 397 | |
561aafbc JH |
398 | list_for_each_entry_safe(p, n, &cache->all, all) { |
399 | list_del(&p->all); | |
b57c1a56 | 400 | kfree(p); |
1da177e4 | 401 | } |
561aafbc JH |
402 | |
403 | INIT_LIST_HEAD(&cache->unknown); | |
404 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
405 | } |
406 | ||
a8c5fb1a GP |
407 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
408 | bdaddr_t *bdaddr) | |
1da177e4 | 409 | { |
30883512 | 410 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
411 | struct inquiry_entry *e; |
412 | ||
413 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
414 | ||
561aafbc JH |
415 | list_for_each_entry(e, &cache->all, all) { |
416 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
417 | return e; | |
418 | } | |
419 | ||
420 | return NULL; | |
421 | } | |
422 | ||
423 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 424 | bdaddr_t *bdaddr) |
561aafbc | 425 | { |
30883512 | 426 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
427 | struct inquiry_entry *e; |
428 | ||
429 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
430 | ||
431 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 432 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
433 | return e; |
434 | } | |
435 | ||
436 | return NULL; | |
1da177e4 LT |
437 | } |
438 | ||
30dc78e1 | 439 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
440 | bdaddr_t *bdaddr, |
441 | int state) | |
30dc78e1 JH |
442 | { |
443 | struct discovery_state *cache = &hdev->discovery; | |
444 | struct inquiry_entry *e; | |
445 | ||
446 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); | |
447 | ||
448 | list_for_each_entry(e, &cache->resolve, list) { | |
449 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
450 | return e; | |
451 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
452 | return e; | |
453 | } | |
454 | ||
455 | return NULL; | |
456 | } | |
457 | ||
a3d4e20a | 458 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 459 | struct inquiry_entry *ie) |
a3d4e20a JH |
460 | { |
461 | struct discovery_state *cache = &hdev->discovery; | |
462 | struct list_head *pos = &cache->resolve; | |
463 | struct inquiry_entry *p; | |
464 | ||
465 | list_del(&ie->list); | |
466 | ||
467 | list_for_each_entry(p, &cache->resolve, list) { | |
468 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 469 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
470 | break; |
471 | pos = &p->list; | |
472 | } | |
473 | ||
474 | list_add(&ie->list, pos); | |
475 | } | |
476 | ||
3175405b | 477 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 478 | bool name_known, bool *ssp) |
1da177e4 | 479 | { |
30883512 | 480 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 481 | struct inquiry_entry *ie; |
1da177e4 LT |
482 | |
483 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
484 | ||
388fc8fa JH |
485 | if (ssp) |
486 | *ssp = data->ssp_mode; | |
487 | ||
70f23020 | 488 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 489 | if (ie) { |
388fc8fa JH |
490 | if (ie->data.ssp_mode && ssp) |
491 | *ssp = true; | |
492 | ||
a3d4e20a | 493 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 494 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
495 | ie->data.rssi = data->rssi; |
496 | hci_inquiry_cache_update_resolve(hdev, ie); | |
497 | } | |
498 | ||
561aafbc | 499 | goto update; |
a3d4e20a | 500 | } |
561aafbc JH |
501 | |
502 | /* Entry not in the cache. Add new one. */ | |
503 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
504 | if (!ie) | |
3175405b | 505 | return false; |
561aafbc JH |
506 | |
507 | list_add(&ie->all, &cache->all); | |
508 | ||
509 | if (name_known) { | |
510 | ie->name_state = NAME_KNOWN; | |
511 | } else { | |
512 | ie->name_state = NAME_NOT_KNOWN; | |
513 | list_add(&ie->list, &cache->unknown); | |
514 | } | |
70f23020 | 515 | |
561aafbc JH |
516 | update: |
517 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 518 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
519 | ie->name_state = NAME_KNOWN; |
520 | list_del(&ie->list); | |
1da177e4 LT |
521 | } |
522 | ||
70f23020 AE |
523 | memcpy(&ie->data, data, sizeof(*data)); |
524 | ie->timestamp = jiffies; | |
1da177e4 | 525 | cache->timestamp = jiffies; |
3175405b JH |
526 | |
527 | if (ie->name_state == NAME_NOT_KNOWN) | |
528 | return false; | |
529 | ||
530 | return true; | |
1da177e4 LT |
531 | } |
532 | ||
533 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
534 | { | |
30883512 | 535 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
536 | struct inquiry_info *info = (struct inquiry_info *) buf; |
537 | struct inquiry_entry *e; | |
538 | int copied = 0; | |
539 | ||
561aafbc | 540 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 541 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
542 | |
543 | if (copied >= num) | |
544 | break; | |
545 | ||
1da177e4 LT |
546 | bacpy(&info->bdaddr, &data->bdaddr); |
547 | info->pscan_rep_mode = data->pscan_rep_mode; | |
548 | info->pscan_period_mode = data->pscan_period_mode; | |
549 | info->pscan_mode = data->pscan_mode; | |
550 | memcpy(info->dev_class, data->dev_class, 3); | |
551 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 552 | |
1da177e4 | 553 | info++; |
b57c1a56 | 554 | copied++; |
1da177e4 LT |
555 | } |
556 | ||
557 | BT_DBG("cache %p, copied %d", cache, copied); | |
558 | return copied; | |
559 | } | |
560 | ||
561 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
562 | { | |
563 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
564 | struct hci_cp_inquiry cp; | |
565 | ||
566 | BT_DBG("%s", hdev->name); | |
567 | ||
568 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
569 | return; | |
570 | ||
571 | /* Start Inquiry */ | |
572 | memcpy(&cp.lap, &ir->lap, 3); | |
573 | cp.length = ir->length; | |
574 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 575 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
576 | } |
577 | ||
578 | int hci_inquiry(void __user *arg) | |
579 | { | |
580 | __u8 __user *ptr = arg; | |
581 | struct hci_inquiry_req ir; | |
582 | struct hci_dev *hdev; | |
583 | int err = 0, do_inquiry = 0, max_rsp; | |
584 | long timeo; | |
585 | __u8 *buf; | |
586 | ||
587 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
588 | return -EFAULT; | |
589 | ||
5a08ecce AE |
590 | hdev = hci_dev_get(ir.dev_id); |
591 | if (!hdev) | |
1da177e4 LT |
592 | return -ENODEV; |
593 | ||
09fd0de5 | 594 | hci_dev_lock(hdev); |
8e87d142 | 595 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 596 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
597 | inquiry_cache_flush(hdev); |
598 | do_inquiry = 1; | |
599 | } | |
09fd0de5 | 600 | hci_dev_unlock(hdev); |
1da177e4 | 601 | |
04837f64 | 602 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
603 | |
604 | if (do_inquiry) { | |
605 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
606 | if (err < 0) | |
607 | goto done; | |
608 | } | |
1da177e4 | 609 | |
8fc9ced3 GP |
610 | /* for unlimited number of responses we will use buffer with |
611 | * 255 entries | |
612 | */ | |
1da177e4 LT |
613 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
614 | ||
615 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
616 | * copy it to the user space. | |
617 | */ | |
01df8c31 | 618 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 619 | if (!buf) { |
1da177e4 LT |
620 | err = -ENOMEM; |
621 | goto done; | |
622 | } | |
623 | ||
09fd0de5 | 624 | hci_dev_lock(hdev); |
1da177e4 | 625 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 626 | hci_dev_unlock(hdev); |
1da177e4 LT |
627 | |
628 | BT_DBG("num_rsp %d", ir.num_rsp); | |
629 | ||
630 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
631 | ptr += sizeof(ir); | |
632 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 633 | ir.num_rsp)) |
1da177e4 | 634 | err = -EFAULT; |
8e87d142 | 635 | } else |
1da177e4 LT |
636 | err = -EFAULT; |
637 | ||
638 | kfree(buf); | |
639 | ||
640 | done: | |
641 | hci_dev_put(hdev); | |
642 | return err; | |
643 | } | |
644 | ||
645 | /* ---- HCI ioctl helpers ---- */ | |
646 | ||
647 | int hci_dev_open(__u16 dev) | |
648 | { | |
649 | struct hci_dev *hdev; | |
650 | int ret = 0; | |
651 | ||
5a08ecce AE |
652 | hdev = hci_dev_get(dev); |
653 | if (!hdev) | |
1da177e4 LT |
654 | return -ENODEV; |
655 | ||
656 | BT_DBG("%s %p", hdev->name, hdev); | |
657 | ||
658 | hci_req_lock(hdev); | |
659 | ||
94324962 JH |
660 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
661 | ret = -ENODEV; | |
662 | goto done; | |
663 | } | |
664 | ||
611b30f7 MH |
665 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
666 | ret = -ERFKILL; | |
667 | goto done; | |
668 | } | |
669 | ||
1da177e4 LT |
670 | if (test_bit(HCI_UP, &hdev->flags)) { |
671 | ret = -EALREADY; | |
672 | goto done; | |
673 | } | |
674 | ||
675 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
676 | set_bit(HCI_RAW, &hdev->flags); | |
677 | ||
07e3b94a AE |
678 | /* Treat all non BR/EDR controllers as raw devices if |
679 | enable_hs is not set */ | |
680 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
681 | set_bit(HCI_RAW, &hdev->flags); |
682 | ||
1da177e4 LT |
683 | if (hdev->open(hdev)) { |
684 | ret = -EIO; | |
685 | goto done; | |
686 | } | |
687 | ||
688 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
689 | atomic_set(&hdev->cmd_cnt, 1); | |
690 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 691 | hdev->init_last_cmd = 0; |
1da177e4 | 692 | |
5f246e89 | 693 | ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 694 | |
eead27da | 695 | if (lmp_host_le_capable(hdev)) |
6ed58ec5 | 696 | ret = __hci_request(hdev, hci_le_init_req, 0, |
5f246e89 | 697 | HCI_INIT_TIMEOUT); |
6ed58ec5 | 698 | |
1da177e4 LT |
699 | clear_bit(HCI_INIT, &hdev->flags); |
700 | } | |
701 | ||
702 | if (!ret) { | |
703 | hci_dev_hold(hdev); | |
704 | set_bit(HCI_UP, &hdev->flags); | |
705 | hci_notify(hdev, HCI_DEV_UP); | |
a8b2d5c2 | 706 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 707 | hci_dev_lock(hdev); |
744cf19e | 708 | mgmt_powered(hdev, 1); |
09fd0de5 | 709 | hci_dev_unlock(hdev); |
56e5cb86 | 710 | } |
8e87d142 | 711 | } else { |
1da177e4 | 712 | /* Init failed, cleanup */ |
3eff45ea | 713 | flush_work(&hdev->tx_work); |
c347b765 | 714 | flush_work(&hdev->cmd_work); |
b78752cc | 715 | flush_work(&hdev->rx_work); |
1da177e4 LT |
716 | |
717 | skb_queue_purge(&hdev->cmd_q); | |
718 | skb_queue_purge(&hdev->rx_q); | |
719 | ||
720 | if (hdev->flush) | |
721 | hdev->flush(hdev); | |
722 | ||
723 | if (hdev->sent_cmd) { | |
724 | kfree_skb(hdev->sent_cmd); | |
725 | hdev->sent_cmd = NULL; | |
726 | } | |
727 | ||
728 | hdev->close(hdev); | |
729 | hdev->flags = 0; | |
730 | } | |
731 | ||
732 | done: | |
733 | hci_req_unlock(hdev); | |
734 | hci_dev_put(hdev); | |
735 | return ret; | |
736 | } | |
737 | ||
738 | static int hci_dev_do_close(struct hci_dev *hdev) | |
739 | { | |
740 | BT_DBG("%s %p", hdev->name, hdev); | |
741 | ||
28b75a89 AG |
742 | cancel_work_sync(&hdev->le_scan); |
743 | ||
1da177e4 LT |
744 | hci_req_cancel(hdev, ENODEV); |
745 | hci_req_lock(hdev); | |
746 | ||
747 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 748 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
749 | hci_req_unlock(hdev); |
750 | return 0; | |
751 | } | |
752 | ||
3eff45ea GP |
753 | /* Flush RX and TX works */ |
754 | flush_work(&hdev->tx_work); | |
b78752cc | 755 | flush_work(&hdev->rx_work); |
1da177e4 | 756 | |
16ab91ab | 757 | if (hdev->discov_timeout > 0) { |
e0f9309f | 758 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 759 | hdev->discov_timeout = 0; |
5e5282bb | 760 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
761 | } |
762 | ||
a8b2d5c2 | 763 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
764 | cancel_delayed_work(&hdev->service_cache); |
765 | ||
7ba8b4be AG |
766 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
767 | ||
09fd0de5 | 768 | hci_dev_lock(hdev); |
1da177e4 LT |
769 | inquiry_cache_flush(hdev); |
770 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 771 | hci_dev_unlock(hdev); |
1da177e4 LT |
772 | |
773 | hci_notify(hdev, HCI_DEV_DOWN); | |
774 | ||
775 | if (hdev->flush) | |
776 | hdev->flush(hdev); | |
777 | ||
778 | /* Reset device */ | |
779 | skb_queue_purge(&hdev->cmd_q); | |
780 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 781 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 782 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 783 | set_bit(HCI_INIT, &hdev->flags); |
5f246e89 | 784 | __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
785 | clear_bit(HCI_INIT, &hdev->flags); |
786 | } | |
787 | ||
c347b765 GP |
788 | /* flush cmd work */ |
789 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
790 | |
791 | /* Drop queues */ | |
792 | skb_queue_purge(&hdev->rx_q); | |
793 | skb_queue_purge(&hdev->cmd_q); | |
794 | skb_queue_purge(&hdev->raw_q); | |
795 | ||
796 | /* Drop last sent command */ | |
797 | if (hdev->sent_cmd) { | |
b79f44c1 | 798 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
799 | kfree_skb(hdev->sent_cmd); |
800 | hdev->sent_cmd = NULL; | |
801 | } | |
802 | ||
803 | /* After this point our queues are empty | |
804 | * and no tasks are scheduled. */ | |
805 | hdev->close(hdev); | |
806 | ||
8ee56540 MH |
807 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
808 | hci_dev_lock(hdev); | |
809 | mgmt_powered(hdev, 0); | |
810 | hci_dev_unlock(hdev); | |
811 | } | |
5add6af8 | 812 | |
1da177e4 LT |
813 | /* Clear flags */ |
814 | hdev->flags = 0; | |
815 | ||
e59fda8d | 816 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 817 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 818 | |
1da177e4 LT |
819 | hci_req_unlock(hdev); |
820 | ||
821 | hci_dev_put(hdev); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | int hci_dev_close(__u16 dev) | |
826 | { | |
827 | struct hci_dev *hdev; | |
828 | int err; | |
829 | ||
70f23020 AE |
830 | hdev = hci_dev_get(dev); |
831 | if (!hdev) | |
1da177e4 | 832 | return -ENODEV; |
8ee56540 MH |
833 | |
834 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
835 | cancel_delayed_work(&hdev->power_off); | |
836 | ||
1da177e4 | 837 | err = hci_dev_do_close(hdev); |
8ee56540 | 838 | |
1da177e4 LT |
839 | hci_dev_put(hdev); |
840 | return err; | |
841 | } | |
842 | ||
843 | int hci_dev_reset(__u16 dev) | |
844 | { | |
845 | struct hci_dev *hdev; | |
846 | int ret = 0; | |
847 | ||
70f23020 AE |
848 | hdev = hci_dev_get(dev); |
849 | if (!hdev) | |
1da177e4 LT |
850 | return -ENODEV; |
851 | ||
852 | hci_req_lock(hdev); | |
1da177e4 LT |
853 | |
854 | if (!test_bit(HCI_UP, &hdev->flags)) | |
855 | goto done; | |
856 | ||
857 | /* Drop queues */ | |
858 | skb_queue_purge(&hdev->rx_q); | |
859 | skb_queue_purge(&hdev->cmd_q); | |
860 | ||
09fd0de5 | 861 | hci_dev_lock(hdev); |
1da177e4 LT |
862 | inquiry_cache_flush(hdev); |
863 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 864 | hci_dev_unlock(hdev); |
1da177e4 LT |
865 | |
866 | if (hdev->flush) | |
867 | hdev->flush(hdev); | |
868 | ||
8e87d142 | 869 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 870 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
871 | |
872 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
5f246e89 | 873 | ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
874 | |
875 | done: | |
1da177e4 LT |
876 | hci_req_unlock(hdev); |
877 | hci_dev_put(hdev); | |
878 | return ret; | |
879 | } | |
880 | ||
881 | int hci_dev_reset_stat(__u16 dev) | |
882 | { | |
883 | struct hci_dev *hdev; | |
884 | int ret = 0; | |
885 | ||
70f23020 AE |
886 | hdev = hci_dev_get(dev); |
887 | if (!hdev) | |
1da177e4 LT |
888 | return -ENODEV; |
889 | ||
890 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
891 | ||
892 | hci_dev_put(hdev); | |
893 | ||
894 | return ret; | |
895 | } | |
896 | ||
897 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
898 | { | |
899 | struct hci_dev *hdev; | |
900 | struct hci_dev_req dr; | |
901 | int err = 0; | |
902 | ||
903 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
904 | return -EFAULT; | |
905 | ||
70f23020 AE |
906 | hdev = hci_dev_get(dr.dev_id); |
907 | if (!hdev) | |
1da177e4 LT |
908 | return -ENODEV; |
909 | ||
910 | switch (cmd) { | |
911 | case HCISETAUTH: | |
04837f64 | 912 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 913 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
914 | break; |
915 | ||
916 | case HCISETENCRYPT: | |
917 | if (!lmp_encrypt_capable(hdev)) { | |
918 | err = -EOPNOTSUPP; | |
919 | break; | |
920 | } | |
921 | ||
922 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
923 | /* Auth must be enabled first */ | |
04837f64 | 924 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 925 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
926 | if (err) |
927 | break; | |
928 | } | |
929 | ||
04837f64 | 930 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
5f246e89 | 931 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
932 | break; |
933 | ||
934 | case HCISETSCAN: | |
04837f64 | 935 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
5f246e89 | 936 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
937 | break; |
938 | ||
1da177e4 | 939 | case HCISETLINKPOL: |
e4e8e37c | 940 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
5f246e89 | 941 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
942 | break; |
943 | ||
944 | case HCISETLINKMODE: | |
e4e8e37c MH |
945 | hdev->link_mode = ((__u16) dr.dev_opt) & |
946 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
947 | break; | |
948 | ||
949 | case HCISETPTYPE: | |
950 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
951 | break; |
952 | ||
953 | case HCISETACLMTU: | |
e4e8e37c MH |
954 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
955 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
956 | break; |
957 | ||
958 | case HCISETSCOMTU: | |
e4e8e37c MH |
959 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
960 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
961 | break; |
962 | ||
963 | default: | |
964 | err = -EINVAL; | |
965 | break; | |
966 | } | |
e4e8e37c | 967 | |
1da177e4 LT |
968 | hci_dev_put(hdev); |
969 | return err; | |
970 | } | |
971 | ||
972 | int hci_get_dev_list(void __user *arg) | |
973 | { | |
8035ded4 | 974 | struct hci_dev *hdev; |
1da177e4 LT |
975 | struct hci_dev_list_req *dl; |
976 | struct hci_dev_req *dr; | |
1da177e4 LT |
977 | int n = 0, size, err; |
978 | __u16 dev_num; | |
979 | ||
980 | if (get_user(dev_num, (__u16 __user *) arg)) | |
981 | return -EFAULT; | |
982 | ||
983 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
984 | return -EINVAL; | |
985 | ||
986 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
987 | ||
70f23020 AE |
988 | dl = kzalloc(size, GFP_KERNEL); |
989 | if (!dl) | |
1da177e4 LT |
990 | return -ENOMEM; |
991 | ||
992 | dr = dl->dev_req; | |
993 | ||
f20d09d5 | 994 | read_lock(&hci_dev_list_lock); |
8035ded4 | 995 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 996 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 997 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 998 | |
a8b2d5c2 JH |
999 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1000 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1001 | |
1da177e4 LT |
1002 | (dr + n)->dev_id = hdev->id; |
1003 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1004 | |
1da177e4 LT |
1005 | if (++n >= dev_num) |
1006 | break; | |
1007 | } | |
f20d09d5 | 1008 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1009 | |
1010 | dl->dev_num = n; | |
1011 | size = sizeof(*dl) + n * sizeof(*dr); | |
1012 | ||
1013 | err = copy_to_user(arg, dl, size); | |
1014 | kfree(dl); | |
1015 | ||
1016 | return err ? -EFAULT : 0; | |
1017 | } | |
1018 | ||
1019 | int hci_get_dev_info(void __user *arg) | |
1020 | { | |
1021 | struct hci_dev *hdev; | |
1022 | struct hci_dev_info di; | |
1023 | int err = 0; | |
1024 | ||
1025 | if (copy_from_user(&di, arg, sizeof(di))) | |
1026 | return -EFAULT; | |
1027 | ||
70f23020 AE |
1028 | hdev = hci_dev_get(di.dev_id); |
1029 | if (!hdev) | |
1da177e4 LT |
1030 | return -ENODEV; |
1031 | ||
a8b2d5c2 | 1032 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1033 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1034 | |
a8b2d5c2 JH |
1035 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1036 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1037 | |
1da177e4 LT |
1038 | strcpy(di.name, hdev->name); |
1039 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1040 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1041 | di.flags = hdev->flags; |
1042 | di.pkt_type = hdev->pkt_type; | |
1043 | di.acl_mtu = hdev->acl_mtu; | |
1044 | di.acl_pkts = hdev->acl_pkts; | |
1045 | di.sco_mtu = hdev->sco_mtu; | |
1046 | di.sco_pkts = hdev->sco_pkts; | |
1047 | di.link_policy = hdev->link_policy; | |
1048 | di.link_mode = hdev->link_mode; | |
1049 | ||
1050 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1051 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1052 | ||
1053 | if (copy_to_user(arg, &di, sizeof(di))) | |
1054 | err = -EFAULT; | |
1055 | ||
1056 | hci_dev_put(hdev); | |
1057 | ||
1058 | return err; | |
1059 | } | |
1060 | ||
1061 | /* ---- Interface to HCI drivers ---- */ | |
1062 | ||
611b30f7 MH |
1063 | static int hci_rfkill_set_block(void *data, bool blocked) |
1064 | { | |
1065 | struct hci_dev *hdev = data; | |
1066 | ||
1067 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1068 | ||
1069 | if (!blocked) | |
1070 | return 0; | |
1071 | ||
1072 | hci_dev_do_close(hdev); | |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static const struct rfkill_ops hci_rfkill_ops = { | |
1078 | .set_block = hci_rfkill_set_block, | |
1079 | }; | |
1080 | ||
ab81cbf9 JH |
1081 | static void hci_power_on(struct work_struct *work) |
1082 | { | |
1083 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1084 | ||
1085 | BT_DBG("%s", hdev->name); | |
1086 | ||
1087 | if (hci_dev_open(hdev->id) < 0) | |
1088 | return; | |
1089 | ||
a8b2d5c2 | 1090 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
80b7ab33 | 1091 | schedule_delayed_work(&hdev->power_off, |
a8c5fb1a | 1092 | msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
ab81cbf9 | 1093 | |
a8b2d5c2 | 1094 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1095 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1096 | } |
1097 | ||
1098 | static void hci_power_off(struct work_struct *work) | |
1099 | { | |
3243553f | 1100 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1101 | power_off.work); |
ab81cbf9 JH |
1102 | |
1103 | BT_DBG("%s", hdev->name); | |
1104 | ||
8ee56540 | 1105 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1106 | } |
1107 | ||
16ab91ab JH |
1108 | static void hci_discov_off(struct work_struct *work) |
1109 | { | |
1110 | struct hci_dev *hdev; | |
1111 | u8 scan = SCAN_PAGE; | |
1112 | ||
1113 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1114 | ||
1115 | BT_DBG("%s", hdev->name); | |
1116 | ||
09fd0de5 | 1117 | hci_dev_lock(hdev); |
16ab91ab JH |
1118 | |
1119 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1120 | ||
1121 | hdev->discov_timeout = 0; | |
1122 | ||
09fd0de5 | 1123 | hci_dev_unlock(hdev); |
16ab91ab JH |
1124 | } |
1125 | ||
2aeb9a1a JH |
1126 | int hci_uuids_clear(struct hci_dev *hdev) |
1127 | { | |
1128 | struct list_head *p, *n; | |
1129 | ||
1130 | list_for_each_safe(p, n, &hdev->uuids) { | |
1131 | struct bt_uuid *uuid; | |
1132 | ||
1133 | uuid = list_entry(p, struct bt_uuid, list); | |
1134 | ||
1135 | list_del(p); | |
1136 | kfree(uuid); | |
1137 | } | |
1138 | ||
1139 | return 0; | |
1140 | } | |
1141 | ||
55ed8ca1 JH |
1142 | int hci_link_keys_clear(struct hci_dev *hdev) |
1143 | { | |
1144 | struct list_head *p, *n; | |
1145 | ||
1146 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1147 | struct link_key *key; | |
1148 | ||
1149 | key = list_entry(p, struct link_key, list); | |
1150 | ||
1151 | list_del(p); | |
1152 | kfree(key); | |
1153 | } | |
1154 | ||
1155 | return 0; | |
1156 | } | |
1157 | ||
b899efaf VCG |
1158 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1159 | { | |
1160 | struct smp_ltk *k, *tmp; | |
1161 | ||
1162 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1163 | list_del(&k->list); | |
1164 | kfree(k); | |
1165 | } | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
55ed8ca1 JH |
1170 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1171 | { | |
8035ded4 | 1172 | struct link_key *k; |
55ed8ca1 | 1173 | |
8035ded4 | 1174 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1175 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1176 | return k; | |
55ed8ca1 JH |
1177 | |
1178 | return NULL; | |
1179 | } | |
1180 | ||
745c0ce3 | 1181 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1182 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1183 | { |
1184 | /* Legacy key */ | |
1185 | if (key_type < 0x03) | |
745c0ce3 | 1186 | return true; |
d25e28ab JH |
1187 | |
1188 | /* Debug keys are insecure so don't store them persistently */ | |
1189 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1190 | return false; |
d25e28ab JH |
1191 | |
1192 | /* Changed combination key and there's no previous one */ | |
1193 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1194 | return false; |
d25e28ab JH |
1195 | |
1196 | /* Security mode 3 case */ | |
1197 | if (!conn) | |
745c0ce3 | 1198 | return true; |
d25e28ab JH |
1199 | |
1200 | /* Neither local nor remote side had no-bonding as requirement */ | |
1201 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1202 | return true; |
d25e28ab JH |
1203 | |
1204 | /* Local side had dedicated bonding as requirement */ | |
1205 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1206 | return true; |
d25e28ab JH |
1207 | |
1208 | /* Remote side had dedicated bonding as requirement */ | |
1209 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1210 | return true; |
d25e28ab JH |
1211 | |
1212 | /* If none of the above criteria match, then don't store the key | |
1213 | * persistently */ | |
745c0ce3 | 1214 | return false; |
d25e28ab JH |
1215 | } |
1216 | ||
c9839a11 | 1217 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1218 | { |
c9839a11 | 1219 | struct smp_ltk *k; |
75d262c2 | 1220 | |
c9839a11 VCG |
1221 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1222 | if (k->ediv != ediv || | |
a8c5fb1a | 1223 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1224 | continue; |
1225 | ||
c9839a11 | 1226 | return k; |
75d262c2 VCG |
1227 | } |
1228 | ||
1229 | return NULL; | |
1230 | } | |
75d262c2 | 1231 | |
c9839a11 | 1232 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1233 | u8 addr_type) |
75d262c2 | 1234 | { |
c9839a11 | 1235 | struct smp_ltk *k; |
75d262c2 | 1236 | |
c9839a11 VCG |
1237 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1238 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1239 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1240 | return k; |
1241 | ||
1242 | return NULL; | |
1243 | } | |
75d262c2 | 1244 | |
d25e28ab | 1245 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1246 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1247 | { |
1248 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1249 | u8 old_key_type; |
1250 | bool persistent; | |
55ed8ca1 JH |
1251 | |
1252 | old_key = hci_find_link_key(hdev, bdaddr); | |
1253 | if (old_key) { | |
1254 | old_key_type = old_key->type; | |
1255 | key = old_key; | |
1256 | } else { | |
12adcf3a | 1257 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1258 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1259 | if (!key) | |
1260 | return -ENOMEM; | |
1261 | list_add(&key->list, &hdev->link_keys); | |
1262 | } | |
1263 | ||
1264 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); | |
1265 | ||
d25e28ab JH |
1266 | /* Some buggy controller combinations generate a changed |
1267 | * combination key for legacy pairing even when there's no | |
1268 | * previous key */ | |
1269 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1270 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1271 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1272 | if (conn) |
1273 | conn->key_type = type; | |
1274 | } | |
d25e28ab | 1275 | |
55ed8ca1 | 1276 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1277 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1278 | key->pin_len = pin_len; |
1279 | ||
b6020ba0 | 1280 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1281 | key->type = old_key_type; |
4748fed2 JH |
1282 | else |
1283 | key->type = type; | |
1284 | ||
4df378a1 JH |
1285 | if (!new_key) |
1286 | return 0; | |
1287 | ||
1288 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1289 | ||
744cf19e | 1290 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1291 | |
6ec5bcad VA |
1292 | if (conn) |
1293 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | ||
c9839a11 | 1298 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1299 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1300 | ediv, u8 rand[8]) |
75d262c2 | 1301 | { |
c9839a11 | 1302 | struct smp_ltk *key, *old_key; |
75d262c2 | 1303 | |
c9839a11 VCG |
1304 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1305 | return 0; | |
75d262c2 | 1306 | |
c9839a11 VCG |
1307 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1308 | if (old_key) | |
75d262c2 | 1309 | key = old_key; |
c9839a11 VCG |
1310 | else { |
1311 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1312 | if (!key) |
1313 | return -ENOMEM; | |
c9839a11 | 1314 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1315 | } |
1316 | ||
75d262c2 | 1317 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1318 | key->bdaddr_type = addr_type; |
1319 | memcpy(key->val, tk, sizeof(key->val)); | |
1320 | key->authenticated = authenticated; | |
1321 | key->ediv = ediv; | |
1322 | key->enc_size = enc_size; | |
1323 | key->type = type; | |
1324 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1325 | |
c9839a11 VCG |
1326 | if (!new_key) |
1327 | return 0; | |
75d262c2 | 1328 | |
261cc5aa VCG |
1329 | if (type & HCI_SMP_LTK) |
1330 | mgmt_new_ltk(hdev, key, 1); | |
1331 | ||
75d262c2 VCG |
1332 | return 0; |
1333 | } | |
1334 | ||
55ed8ca1 JH |
1335 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1336 | { | |
1337 | struct link_key *key; | |
1338 | ||
1339 | key = hci_find_link_key(hdev, bdaddr); | |
1340 | if (!key) | |
1341 | return -ENOENT; | |
1342 | ||
1343 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1344 | ||
1345 | list_del(&key->list); | |
1346 | kfree(key); | |
1347 | ||
1348 | return 0; | |
1349 | } | |
1350 | ||
b899efaf VCG |
1351 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1352 | { | |
1353 | struct smp_ltk *k, *tmp; | |
1354 | ||
1355 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1356 | if (bacmp(bdaddr, &k->bdaddr)) | |
1357 | continue; | |
1358 | ||
1359 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1360 | ||
1361 | list_del(&k->list); | |
1362 | kfree(k); | |
1363 | } | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
6bd32326 VT |
1368 | /* HCI command timer function */ |
1369 | static void hci_cmd_timer(unsigned long arg) | |
1370 | { | |
1371 | struct hci_dev *hdev = (void *) arg; | |
1372 | ||
1373 | BT_ERR("%s command tx timeout", hdev->name); | |
1374 | atomic_set(&hdev->cmd_cnt, 1); | |
c347b765 | 1375 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1376 | } |
1377 | ||
2763eda6 | 1378 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1379 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1380 | { |
1381 | struct oob_data *data; | |
1382 | ||
1383 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1384 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1385 | return data; | |
1386 | ||
1387 | return NULL; | |
1388 | } | |
1389 | ||
1390 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1391 | { | |
1392 | struct oob_data *data; | |
1393 | ||
1394 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1395 | if (!data) | |
1396 | return -ENOENT; | |
1397 | ||
1398 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1399 | ||
1400 | list_del(&data->list); | |
1401 | kfree(data); | |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1407 | { | |
1408 | struct oob_data *data, *n; | |
1409 | ||
1410 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1411 | list_del(&data->list); | |
1412 | kfree(data); | |
1413 | } | |
1414 | ||
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1419 | u8 *randomizer) |
2763eda6 SJ |
1420 | { |
1421 | struct oob_data *data; | |
1422 | ||
1423 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1424 | ||
1425 | if (!data) { | |
1426 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1427 | if (!data) | |
1428 | return -ENOMEM; | |
1429 | ||
1430 | bacpy(&data->bdaddr, bdaddr); | |
1431 | list_add(&data->list, &hdev->remote_oob_data); | |
1432 | } | |
1433 | ||
1434 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1435 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1436 | ||
1437 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); | |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
04124681 | 1442 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1443 | { |
8035ded4 | 1444 | struct bdaddr_list *b; |
b2a66aad | 1445 | |
8035ded4 | 1446 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1447 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1448 | return b; | |
b2a66aad AJ |
1449 | |
1450 | return NULL; | |
1451 | } | |
1452 | ||
1453 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1454 | { | |
1455 | struct list_head *p, *n; | |
1456 | ||
1457 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1458 | struct bdaddr_list *b; | |
1459 | ||
1460 | b = list_entry(p, struct bdaddr_list, list); | |
1461 | ||
1462 | list_del(p); | |
1463 | kfree(b); | |
1464 | } | |
1465 | ||
1466 | return 0; | |
1467 | } | |
1468 | ||
88c1fe4b | 1469 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1470 | { |
1471 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1472 | |
1473 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1474 | return -EBADF; | |
1475 | ||
5e762444 AJ |
1476 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1477 | return -EEXIST; | |
b2a66aad AJ |
1478 | |
1479 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1480 | if (!entry) |
1481 | return -ENOMEM; | |
b2a66aad AJ |
1482 | |
1483 | bacpy(&entry->bdaddr, bdaddr); | |
1484 | ||
1485 | list_add(&entry->list, &hdev->blacklist); | |
1486 | ||
88c1fe4b | 1487 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1488 | } |
1489 | ||
88c1fe4b | 1490 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1491 | { |
1492 | struct bdaddr_list *entry; | |
b2a66aad | 1493 | |
1ec918ce | 1494 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1495 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1496 | |
1497 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1498 | if (!entry) |
5e762444 | 1499 | return -ENOENT; |
b2a66aad AJ |
1500 | |
1501 | list_del(&entry->list); | |
1502 | kfree(entry); | |
1503 | ||
88c1fe4b | 1504 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1505 | } |
1506 | ||
7ba8b4be AG |
1507 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
1508 | { | |
1509 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1510 | struct hci_cp_le_set_scan_param cp; | |
1511 | ||
1512 | memset(&cp, 0, sizeof(cp)); | |
1513 | cp.type = param->type; | |
1514 | cp.interval = cpu_to_le16(param->interval); | |
1515 | cp.window = cpu_to_le16(param->window); | |
1516 | ||
1517 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); | |
1518 | } | |
1519 | ||
1520 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) | |
1521 | { | |
1522 | struct hci_cp_le_set_scan_enable cp; | |
1523 | ||
1524 | memset(&cp, 0, sizeof(cp)); | |
1525 | cp.enable = 1; | |
0431a43c | 1526 | cp.filter_dup = 1; |
7ba8b4be AG |
1527 | |
1528 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1529 | } | |
1530 | ||
1531 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 1532 | u16 window, int timeout) |
7ba8b4be AG |
1533 | { |
1534 | long timeo = msecs_to_jiffies(3000); | |
1535 | struct le_scan_params param; | |
1536 | int err; | |
1537 | ||
1538 | BT_DBG("%s", hdev->name); | |
1539 | ||
1540 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1541 | return -EINPROGRESS; | |
1542 | ||
1543 | param.type = type; | |
1544 | param.interval = interval; | |
1545 | param.window = window; | |
1546 | ||
1547 | hci_req_lock(hdev); | |
1548 | ||
1549 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, | |
04124681 | 1550 | timeo); |
7ba8b4be AG |
1551 | if (!err) |
1552 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); | |
1553 | ||
1554 | hci_req_unlock(hdev); | |
1555 | ||
1556 | if (err < 0) | |
1557 | return err; | |
1558 | ||
1559 | schedule_delayed_work(&hdev->le_scan_disable, | |
04124681 | 1560 | msecs_to_jiffies(timeout)); |
7ba8b4be AG |
1561 | |
1562 | return 0; | |
1563 | } | |
1564 | ||
7dbfac1d AG |
1565 | int hci_cancel_le_scan(struct hci_dev *hdev) |
1566 | { | |
1567 | BT_DBG("%s", hdev->name); | |
1568 | ||
1569 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1570 | return -EALREADY; | |
1571 | ||
1572 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
1573 | struct hci_cp_le_set_scan_enable cp; | |
1574 | ||
1575 | /* Send HCI command to disable LE Scan */ | |
1576 | memset(&cp, 0, sizeof(cp)); | |
1577 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1578 | } | |
1579 | ||
1580 | return 0; | |
1581 | } | |
1582 | ||
7ba8b4be AG |
1583 | static void le_scan_disable_work(struct work_struct *work) |
1584 | { | |
1585 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 1586 | le_scan_disable.work); |
7ba8b4be AG |
1587 | struct hci_cp_le_set_scan_enable cp; |
1588 | ||
1589 | BT_DBG("%s", hdev->name); | |
1590 | ||
1591 | memset(&cp, 0, sizeof(cp)); | |
1592 | ||
1593 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1594 | } | |
1595 | ||
28b75a89 AG |
1596 | static void le_scan_work(struct work_struct *work) |
1597 | { | |
1598 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
1599 | struct le_scan_params *param = &hdev->le_scan_params; | |
1600 | ||
1601 | BT_DBG("%s", hdev->name); | |
1602 | ||
04124681 GP |
1603 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
1604 | param->timeout); | |
28b75a89 AG |
1605 | } |
1606 | ||
1607 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 1608 | int timeout) |
28b75a89 AG |
1609 | { |
1610 | struct le_scan_params *param = &hdev->le_scan_params; | |
1611 | ||
1612 | BT_DBG("%s", hdev->name); | |
1613 | ||
1614 | if (work_busy(&hdev->le_scan)) | |
1615 | return -EINPROGRESS; | |
1616 | ||
1617 | param->type = type; | |
1618 | param->interval = interval; | |
1619 | param->window = window; | |
1620 | param->timeout = timeout; | |
1621 | ||
1622 | queue_work(system_long_wq, &hdev->le_scan); | |
1623 | ||
1624 | return 0; | |
1625 | } | |
1626 | ||
9be0dab7 DH |
1627 | /* Alloc HCI device */ |
1628 | struct hci_dev *hci_alloc_dev(void) | |
1629 | { | |
1630 | struct hci_dev *hdev; | |
1631 | ||
1632 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
1633 | if (!hdev) | |
1634 | return NULL; | |
1635 | ||
b1b813d4 DH |
1636 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
1637 | hdev->esco_type = (ESCO_HV1); | |
1638 | hdev->link_mode = (HCI_LM_ACCEPT); | |
1639 | hdev->io_capability = 0x03; /* No Input No Output */ | |
1640 | ||
b1b813d4 DH |
1641 | hdev->sniff_max_interval = 800; |
1642 | hdev->sniff_min_interval = 80; | |
1643 | ||
1644 | mutex_init(&hdev->lock); | |
1645 | mutex_init(&hdev->req_lock); | |
1646 | ||
1647 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
1648 | INIT_LIST_HEAD(&hdev->blacklist); | |
1649 | INIT_LIST_HEAD(&hdev->uuids); | |
1650 | INIT_LIST_HEAD(&hdev->link_keys); | |
1651 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
1652 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
b1b813d4 DH |
1653 | |
1654 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
1655 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
1656 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
1657 | INIT_WORK(&hdev->power_on, hci_power_on); | |
1658 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
1659 | ||
b1b813d4 DH |
1660 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
1661 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
1662 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
1663 | ||
9be0dab7 | 1664 | skb_queue_head_init(&hdev->driver_init); |
b1b813d4 DH |
1665 | skb_queue_head_init(&hdev->rx_q); |
1666 | skb_queue_head_init(&hdev->cmd_q); | |
1667 | skb_queue_head_init(&hdev->raw_q); | |
1668 | ||
1669 | init_waitqueue_head(&hdev->req_wait_q); | |
1670 | ||
1671 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); | |
1672 | ||
b1b813d4 DH |
1673 | hci_init_sysfs(hdev); |
1674 | discovery_init(hdev); | |
1675 | hci_conn_hash_init(hdev); | |
9be0dab7 DH |
1676 | |
1677 | return hdev; | |
1678 | } | |
1679 | EXPORT_SYMBOL(hci_alloc_dev); | |
1680 | ||
1681 | /* Free HCI device */ | |
1682 | void hci_free_dev(struct hci_dev *hdev) | |
1683 | { | |
1684 | skb_queue_purge(&hdev->driver_init); | |
1685 | ||
1686 | /* will free via device release */ | |
1687 | put_device(&hdev->dev); | |
1688 | } | |
1689 | EXPORT_SYMBOL(hci_free_dev); | |
1690 | ||
1da177e4 LT |
1691 | /* Register HCI device */ |
1692 | int hci_register_dev(struct hci_dev *hdev) | |
1693 | { | |
b1b813d4 | 1694 | int id, error; |
1da177e4 | 1695 | |
010666a1 | 1696 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
1697 | return -EINVAL; |
1698 | ||
08add513 MM |
1699 | /* Do not allow HCI_AMP devices to register at index 0, |
1700 | * so the index can be used as the AMP controller ID. | |
1701 | */ | |
3df92b31 SL |
1702 | switch (hdev->dev_type) { |
1703 | case HCI_BREDR: | |
1704 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
1705 | break; | |
1706 | case HCI_AMP: | |
1707 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
1708 | break; | |
1709 | default: | |
1710 | return -EINVAL; | |
1da177e4 | 1711 | } |
8e87d142 | 1712 | |
3df92b31 SL |
1713 | if (id < 0) |
1714 | return id; | |
1715 | ||
1da177e4 LT |
1716 | sprintf(hdev->name, "hci%d", id); |
1717 | hdev->id = id; | |
2d8b3a11 AE |
1718 | |
1719 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
1720 | ||
3df92b31 SL |
1721 | write_lock(&hci_dev_list_lock); |
1722 | list_add(&hdev->list, &hci_dev_list); | |
f20d09d5 | 1723 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1724 | |
32845eb1 | 1725 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 1726 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
1727 | if (!hdev->workqueue) { |
1728 | error = -ENOMEM; | |
1729 | goto err; | |
1730 | } | |
f48fd9c8 | 1731 | |
33ca954d DH |
1732 | error = hci_add_sysfs(hdev); |
1733 | if (error < 0) | |
1734 | goto err_wqueue; | |
1da177e4 | 1735 | |
611b30f7 | 1736 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
1737 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
1738 | hdev); | |
611b30f7 MH |
1739 | if (hdev->rfkill) { |
1740 | if (rfkill_register(hdev->rfkill) < 0) { | |
1741 | rfkill_destroy(hdev->rfkill); | |
1742 | hdev->rfkill = NULL; | |
1743 | } | |
1744 | } | |
1745 | ||
a8b2d5c2 JH |
1746 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1747 | set_bit(HCI_SETUP, &hdev->dev_flags); | |
7f971041 | 1748 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1749 | |
1da177e4 | 1750 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 1751 | hci_dev_hold(hdev); |
1da177e4 LT |
1752 | |
1753 | return id; | |
f48fd9c8 | 1754 | |
33ca954d DH |
1755 | err_wqueue: |
1756 | destroy_workqueue(hdev->workqueue); | |
1757 | err: | |
3df92b31 | 1758 | ida_simple_remove(&hci_index_ida, hdev->id); |
f20d09d5 | 1759 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1760 | list_del(&hdev->list); |
f20d09d5 | 1761 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1762 | |
33ca954d | 1763 | return error; |
1da177e4 LT |
1764 | } |
1765 | EXPORT_SYMBOL(hci_register_dev); | |
1766 | ||
1767 | /* Unregister HCI device */ | |
59735631 | 1768 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1769 | { |
3df92b31 | 1770 | int i, id; |
ef222013 | 1771 | |
c13854ce | 1772 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1773 | |
94324962 JH |
1774 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
1775 | ||
3df92b31 SL |
1776 | id = hdev->id; |
1777 | ||
f20d09d5 | 1778 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1779 | list_del(&hdev->list); |
f20d09d5 | 1780 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1781 | |
1782 | hci_dev_do_close(hdev); | |
1783 | ||
cd4c5391 | 1784 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1785 | kfree_skb(hdev->reassembly[i]); |
1786 | ||
ab81cbf9 | 1787 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 1788 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 1789 | hci_dev_lock(hdev); |
744cf19e | 1790 | mgmt_index_removed(hdev); |
09fd0de5 | 1791 | hci_dev_unlock(hdev); |
56e5cb86 | 1792 | } |
ab81cbf9 | 1793 | |
2e58ef3e JH |
1794 | /* mgmt_index_removed should take care of emptying the |
1795 | * pending list */ | |
1796 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1797 | ||
1da177e4 LT |
1798 | hci_notify(hdev, HCI_DEV_UNREG); |
1799 | ||
611b30f7 MH |
1800 | if (hdev->rfkill) { |
1801 | rfkill_unregister(hdev->rfkill); | |
1802 | rfkill_destroy(hdev->rfkill); | |
1803 | } | |
1804 | ||
ce242970 | 1805 | hci_del_sysfs(hdev); |
147e2d59 | 1806 | |
f48fd9c8 MH |
1807 | destroy_workqueue(hdev->workqueue); |
1808 | ||
09fd0de5 | 1809 | hci_dev_lock(hdev); |
e2e0cacb | 1810 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1811 | hci_uuids_clear(hdev); |
55ed8ca1 | 1812 | hci_link_keys_clear(hdev); |
b899efaf | 1813 | hci_smp_ltks_clear(hdev); |
2763eda6 | 1814 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 1815 | hci_dev_unlock(hdev); |
e2e0cacb | 1816 | |
dc946bd8 | 1817 | hci_dev_put(hdev); |
3df92b31 SL |
1818 | |
1819 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
1820 | } |
1821 | EXPORT_SYMBOL(hci_unregister_dev); | |
1822 | ||
1823 | /* Suspend HCI device */ | |
1824 | int hci_suspend_dev(struct hci_dev *hdev) | |
1825 | { | |
1826 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1827 | return 0; | |
1828 | } | |
1829 | EXPORT_SYMBOL(hci_suspend_dev); | |
1830 | ||
1831 | /* Resume HCI device */ | |
1832 | int hci_resume_dev(struct hci_dev *hdev) | |
1833 | { | |
1834 | hci_notify(hdev, HCI_DEV_RESUME); | |
1835 | return 0; | |
1836 | } | |
1837 | EXPORT_SYMBOL(hci_resume_dev); | |
1838 | ||
76bca880 MH |
1839 | /* Receive frame from HCI drivers */ |
1840 | int hci_recv_frame(struct sk_buff *skb) | |
1841 | { | |
1842 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1843 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 1844 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
1845 | kfree_skb(skb); |
1846 | return -ENXIO; | |
1847 | } | |
1848 | ||
1849 | /* Incomming skb */ | |
1850 | bt_cb(skb)->incoming = 1; | |
1851 | ||
1852 | /* Time stamp */ | |
1853 | __net_timestamp(skb); | |
1854 | ||
76bca880 | 1855 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1856 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1857 | |
76bca880 MH |
1858 | return 0; |
1859 | } | |
1860 | EXPORT_SYMBOL(hci_recv_frame); | |
1861 | ||
33e882a5 | 1862 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 1863 | int count, __u8 index) |
33e882a5 SS |
1864 | { |
1865 | int len = 0; | |
1866 | int hlen = 0; | |
1867 | int remain = count; | |
1868 | struct sk_buff *skb; | |
1869 | struct bt_skb_cb *scb; | |
1870 | ||
1871 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 1872 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
1873 | return -EILSEQ; |
1874 | ||
1875 | skb = hdev->reassembly[index]; | |
1876 | ||
1877 | if (!skb) { | |
1878 | switch (type) { | |
1879 | case HCI_ACLDATA_PKT: | |
1880 | len = HCI_MAX_FRAME_SIZE; | |
1881 | hlen = HCI_ACL_HDR_SIZE; | |
1882 | break; | |
1883 | case HCI_EVENT_PKT: | |
1884 | len = HCI_MAX_EVENT_SIZE; | |
1885 | hlen = HCI_EVENT_HDR_SIZE; | |
1886 | break; | |
1887 | case HCI_SCODATA_PKT: | |
1888 | len = HCI_MAX_SCO_SIZE; | |
1889 | hlen = HCI_SCO_HDR_SIZE; | |
1890 | break; | |
1891 | } | |
1892 | ||
1e429f38 | 1893 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1894 | if (!skb) |
1895 | return -ENOMEM; | |
1896 | ||
1897 | scb = (void *) skb->cb; | |
1898 | scb->expect = hlen; | |
1899 | scb->pkt_type = type; | |
1900 | ||
1901 | skb->dev = (void *) hdev; | |
1902 | hdev->reassembly[index] = skb; | |
1903 | } | |
1904 | ||
1905 | while (count) { | |
1906 | scb = (void *) skb->cb; | |
89bb46d0 | 1907 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
1908 | |
1909 | memcpy(skb_put(skb, len), data, len); | |
1910 | ||
1911 | count -= len; | |
1912 | data += len; | |
1913 | scb->expect -= len; | |
1914 | remain = count; | |
1915 | ||
1916 | switch (type) { | |
1917 | case HCI_EVENT_PKT: | |
1918 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1919 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1920 | scb->expect = h->plen; | |
1921 | ||
1922 | if (skb_tailroom(skb) < scb->expect) { | |
1923 | kfree_skb(skb); | |
1924 | hdev->reassembly[index] = NULL; | |
1925 | return -ENOMEM; | |
1926 | } | |
1927 | } | |
1928 | break; | |
1929 | ||
1930 | case HCI_ACLDATA_PKT: | |
1931 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1932 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1933 | scb->expect = __le16_to_cpu(h->dlen); | |
1934 | ||
1935 | if (skb_tailroom(skb) < scb->expect) { | |
1936 | kfree_skb(skb); | |
1937 | hdev->reassembly[index] = NULL; | |
1938 | return -ENOMEM; | |
1939 | } | |
1940 | } | |
1941 | break; | |
1942 | ||
1943 | case HCI_SCODATA_PKT: | |
1944 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1945 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1946 | scb->expect = h->dlen; | |
1947 | ||
1948 | if (skb_tailroom(skb) < scb->expect) { | |
1949 | kfree_skb(skb); | |
1950 | hdev->reassembly[index] = NULL; | |
1951 | return -ENOMEM; | |
1952 | } | |
1953 | } | |
1954 | break; | |
1955 | } | |
1956 | ||
1957 | if (scb->expect == 0) { | |
1958 | /* Complete frame */ | |
1959 | ||
1960 | bt_cb(skb)->pkt_type = type; | |
1961 | hci_recv_frame(skb); | |
1962 | ||
1963 | hdev->reassembly[index] = NULL; | |
1964 | return remain; | |
1965 | } | |
1966 | } | |
1967 | ||
1968 | return remain; | |
1969 | } | |
1970 | ||
ef222013 MH |
1971 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1972 | { | |
f39a3c06 SS |
1973 | int rem = 0; |
1974 | ||
ef222013 MH |
1975 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1976 | return -EILSEQ; | |
1977 | ||
da5f6c37 | 1978 | while (count) { |
1e429f38 | 1979 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
1980 | if (rem < 0) |
1981 | return rem; | |
ef222013 | 1982 | |
f39a3c06 SS |
1983 | data += (count - rem); |
1984 | count = rem; | |
f81c6224 | 1985 | } |
ef222013 | 1986 | |
f39a3c06 | 1987 | return rem; |
ef222013 MH |
1988 | } |
1989 | EXPORT_SYMBOL(hci_recv_fragment); | |
1990 | ||
99811510 SS |
1991 | #define STREAM_REASSEMBLY 0 |
1992 | ||
1993 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
1994 | { | |
1995 | int type; | |
1996 | int rem = 0; | |
1997 | ||
da5f6c37 | 1998 | while (count) { |
99811510 SS |
1999 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2000 | ||
2001 | if (!skb) { | |
2002 | struct { char type; } *pkt; | |
2003 | ||
2004 | /* Start of the frame */ | |
2005 | pkt = data; | |
2006 | type = pkt->type; | |
2007 | ||
2008 | data++; | |
2009 | count--; | |
2010 | } else | |
2011 | type = bt_cb(skb)->pkt_type; | |
2012 | ||
1e429f38 | 2013 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2014 | STREAM_REASSEMBLY); |
99811510 SS |
2015 | if (rem < 0) |
2016 | return rem; | |
2017 | ||
2018 | data += (count - rem); | |
2019 | count = rem; | |
f81c6224 | 2020 | } |
99811510 SS |
2021 | |
2022 | return rem; | |
2023 | } | |
2024 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2025 | ||
1da177e4 LT |
2026 | /* ---- Interface to upper protocols ---- */ |
2027 | ||
1da177e4 LT |
2028 | int hci_register_cb(struct hci_cb *cb) |
2029 | { | |
2030 | BT_DBG("%p name %s", cb, cb->name); | |
2031 | ||
f20d09d5 | 2032 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2033 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2034 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2035 | |
2036 | return 0; | |
2037 | } | |
2038 | EXPORT_SYMBOL(hci_register_cb); | |
2039 | ||
2040 | int hci_unregister_cb(struct hci_cb *cb) | |
2041 | { | |
2042 | BT_DBG("%p name %s", cb, cb->name); | |
2043 | ||
f20d09d5 | 2044 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2045 | list_del(&cb->list); |
f20d09d5 | 2046 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2047 | |
2048 | return 0; | |
2049 | } | |
2050 | EXPORT_SYMBOL(hci_unregister_cb); | |
2051 | ||
2052 | static int hci_send_frame(struct sk_buff *skb) | |
2053 | { | |
2054 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2055 | ||
2056 | if (!hdev) { | |
2057 | kfree_skb(skb); | |
2058 | return -ENODEV; | |
2059 | } | |
2060 | ||
0d48d939 | 2061 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2062 | |
cd82e61c MH |
2063 | /* Time stamp */ |
2064 | __net_timestamp(skb); | |
1da177e4 | 2065 | |
cd82e61c MH |
2066 | /* Send copy to monitor */ |
2067 | hci_send_to_monitor(hdev, skb); | |
2068 | ||
2069 | if (atomic_read(&hdev->promisc)) { | |
2070 | /* Send copy to the sockets */ | |
470fe1b5 | 2071 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2072 | } |
2073 | ||
2074 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2075 | skb_orphan(skb); | |
2076 | ||
2077 | return hdev->send(skb); | |
2078 | } | |
2079 | ||
2080 | /* Send HCI command */ | |
a9de9248 | 2081 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
2082 | { |
2083 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2084 | struct hci_command_hdr *hdr; | |
2085 | struct sk_buff *skb; | |
2086 | ||
a9de9248 | 2087 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
2088 | |
2089 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
2090 | if (!skb) { | |
ef222013 | 2091 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
2092 | return -ENOMEM; |
2093 | } | |
2094 | ||
2095 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2096 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2097 | hdr->plen = plen; |
2098 | ||
2099 | if (plen) | |
2100 | memcpy(skb_put(skb, plen), param, plen); | |
2101 | ||
2102 | BT_DBG("skb len %d", skb->len); | |
2103 | ||
0d48d939 | 2104 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2105 | skb->dev = (void *) hdev; |
c78ae283 | 2106 | |
a5040efa JH |
2107 | if (test_bit(HCI_INIT, &hdev->flags)) |
2108 | hdev->init_last_cmd = opcode; | |
2109 | ||
1da177e4 | 2110 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2111 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2112 | |
2113 | return 0; | |
2114 | } | |
1da177e4 LT |
2115 | |
2116 | /* Get data from the previously sent command */ | |
a9de9248 | 2117 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2118 | { |
2119 | struct hci_command_hdr *hdr; | |
2120 | ||
2121 | if (!hdev->sent_cmd) | |
2122 | return NULL; | |
2123 | ||
2124 | hdr = (void *) hdev->sent_cmd->data; | |
2125 | ||
a9de9248 | 2126 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2127 | return NULL; |
2128 | ||
a9de9248 | 2129 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
1da177e4 LT |
2130 | |
2131 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2132 | } | |
2133 | ||
2134 | /* Send ACL data */ | |
2135 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2136 | { | |
2137 | struct hci_acl_hdr *hdr; | |
2138 | int len = skb->len; | |
2139 | ||
badff6d0 ACM |
2140 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2141 | skb_reset_transport_header(skb); | |
9c70220b | 2142 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2143 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2144 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2145 | } |
2146 | ||
73d80deb | 2147 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
a8c5fb1a | 2148 | struct sk_buff *skb, __u16 flags) |
1da177e4 LT |
2149 | { |
2150 | struct hci_dev *hdev = conn->hdev; | |
2151 | struct sk_buff *list; | |
2152 | ||
087bfd99 GP |
2153 | skb->len = skb_headlen(skb); |
2154 | skb->data_len = 0; | |
2155 | ||
2156 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
2157 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2158 | ||
70f23020 AE |
2159 | list = skb_shinfo(skb)->frag_list; |
2160 | if (!list) { | |
1da177e4 LT |
2161 | /* Non fragmented */ |
2162 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2163 | ||
73d80deb | 2164 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2165 | } else { |
2166 | /* Fragmented */ | |
2167 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2168 | ||
2169 | skb_shinfo(skb)->frag_list = NULL; | |
2170 | ||
2171 | /* Queue all fragments atomically */ | |
af3e6359 | 2172 | spin_lock(&queue->lock); |
1da177e4 | 2173 | |
73d80deb | 2174 | __skb_queue_tail(queue, skb); |
e702112f AE |
2175 | |
2176 | flags &= ~ACL_START; | |
2177 | flags |= ACL_CONT; | |
1da177e4 LT |
2178 | do { |
2179 | skb = list; list = list->next; | |
8e87d142 | 2180 | |
1da177e4 | 2181 | skb->dev = (void *) hdev; |
0d48d939 | 2182 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2183 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2184 | |
2185 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2186 | ||
73d80deb | 2187 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2188 | } while (list); |
2189 | ||
af3e6359 | 2190 | spin_unlock(&queue->lock); |
1da177e4 | 2191 | } |
73d80deb LAD |
2192 | } |
2193 | ||
2194 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2195 | { | |
2196 | struct hci_conn *conn = chan->conn; | |
2197 | struct hci_dev *hdev = conn->hdev; | |
2198 | ||
2199 | BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); | |
2200 | ||
2201 | skb->dev = (void *) hdev; | |
73d80deb LAD |
2202 | |
2203 | hci_queue_acl(conn, &chan->data_q, skb, flags); | |
1da177e4 | 2204 | |
3eff45ea | 2205 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2206 | } |
1da177e4 LT |
2207 | |
2208 | /* Send SCO data */ | |
0d861d8b | 2209 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2210 | { |
2211 | struct hci_dev *hdev = conn->hdev; | |
2212 | struct hci_sco_hdr hdr; | |
2213 | ||
2214 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2215 | ||
aca3192c | 2216 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2217 | hdr.dlen = skb->len; |
2218 | ||
badff6d0 ACM |
2219 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2220 | skb_reset_transport_header(skb); | |
9c70220b | 2221 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2222 | |
2223 | skb->dev = (void *) hdev; | |
0d48d939 | 2224 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2225 | |
1da177e4 | 2226 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2227 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2228 | } |
1da177e4 LT |
2229 | |
2230 | /* ---- HCI TX task (outgoing data) ---- */ | |
2231 | ||
2232 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2233 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2234 | int *quote) | |
1da177e4 LT |
2235 | { |
2236 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2237 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2238 | unsigned int num = 0, min = ~0; |
1da177e4 | 2239 | |
8e87d142 | 2240 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2241 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2242 | |
2243 | rcu_read_lock(); | |
2244 | ||
2245 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2246 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2247 | continue; |
769be974 MH |
2248 | |
2249 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2250 | continue; | |
2251 | ||
1da177e4 LT |
2252 | num++; |
2253 | ||
2254 | if (c->sent < min) { | |
2255 | min = c->sent; | |
2256 | conn = c; | |
2257 | } | |
52087a79 LAD |
2258 | |
2259 | if (hci_conn_num(hdev, type) == num) | |
2260 | break; | |
1da177e4 LT |
2261 | } |
2262 | ||
bf4c6325 GP |
2263 | rcu_read_unlock(); |
2264 | ||
1da177e4 | 2265 | if (conn) { |
6ed58ec5 VT |
2266 | int cnt, q; |
2267 | ||
2268 | switch (conn->type) { | |
2269 | case ACL_LINK: | |
2270 | cnt = hdev->acl_cnt; | |
2271 | break; | |
2272 | case SCO_LINK: | |
2273 | case ESCO_LINK: | |
2274 | cnt = hdev->sco_cnt; | |
2275 | break; | |
2276 | case LE_LINK: | |
2277 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2278 | break; | |
2279 | default: | |
2280 | cnt = 0; | |
2281 | BT_ERR("Unknown link type"); | |
2282 | } | |
2283 | ||
2284 | q = cnt / num; | |
1da177e4 LT |
2285 | *quote = q ? q : 1; |
2286 | } else | |
2287 | *quote = 0; | |
2288 | ||
2289 | BT_DBG("conn %p quote %d", conn, *quote); | |
2290 | return conn; | |
2291 | } | |
2292 | ||
6039aa73 | 2293 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2294 | { |
2295 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2296 | struct hci_conn *c; |
1da177e4 | 2297 | |
bae1f5d9 | 2298 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2299 | |
bf4c6325 GP |
2300 | rcu_read_lock(); |
2301 | ||
1da177e4 | 2302 | /* Kill stalled connections */ |
bf4c6325 | 2303 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 VT |
2304 | if (c->type == type && c->sent) { |
2305 | BT_ERR("%s killing stalled connection %s", | |
a8c5fb1a | 2306 | hdev->name, batostr(&c->dst)); |
7490c6c2 | 2307 | hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2308 | } |
2309 | } | |
bf4c6325 GP |
2310 | |
2311 | rcu_read_unlock(); | |
1da177e4 LT |
2312 | } |
2313 | ||
6039aa73 GP |
2314 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2315 | int *quote) | |
1da177e4 | 2316 | { |
73d80deb LAD |
2317 | struct hci_conn_hash *h = &hdev->conn_hash; |
2318 | struct hci_chan *chan = NULL; | |
abc5de8f | 2319 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2320 | struct hci_conn *conn; |
73d80deb LAD |
2321 | int cnt, q, conn_num = 0; |
2322 | ||
2323 | BT_DBG("%s", hdev->name); | |
2324 | ||
bf4c6325 GP |
2325 | rcu_read_lock(); |
2326 | ||
2327 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2328 | struct hci_chan *tmp; |
2329 | ||
2330 | if (conn->type != type) | |
2331 | continue; | |
2332 | ||
2333 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2334 | continue; | |
2335 | ||
2336 | conn_num++; | |
2337 | ||
8192edef | 2338 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2339 | struct sk_buff *skb; |
2340 | ||
2341 | if (skb_queue_empty(&tmp->data_q)) | |
2342 | continue; | |
2343 | ||
2344 | skb = skb_peek(&tmp->data_q); | |
2345 | if (skb->priority < cur_prio) | |
2346 | continue; | |
2347 | ||
2348 | if (skb->priority > cur_prio) { | |
2349 | num = 0; | |
2350 | min = ~0; | |
2351 | cur_prio = skb->priority; | |
2352 | } | |
2353 | ||
2354 | num++; | |
2355 | ||
2356 | if (conn->sent < min) { | |
2357 | min = conn->sent; | |
2358 | chan = tmp; | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | if (hci_conn_num(hdev, type) == conn_num) | |
2363 | break; | |
2364 | } | |
2365 | ||
bf4c6325 GP |
2366 | rcu_read_unlock(); |
2367 | ||
73d80deb LAD |
2368 | if (!chan) |
2369 | return NULL; | |
2370 | ||
2371 | switch (chan->conn->type) { | |
2372 | case ACL_LINK: | |
2373 | cnt = hdev->acl_cnt; | |
2374 | break; | |
2375 | case SCO_LINK: | |
2376 | case ESCO_LINK: | |
2377 | cnt = hdev->sco_cnt; | |
2378 | break; | |
2379 | case LE_LINK: | |
2380 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2381 | break; | |
2382 | default: | |
2383 | cnt = 0; | |
2384 | BT_ERR("Unknown link type"); | |
2385 | } | |
2386 | ||
2387 | q = cnt / num; | |
2388 | *quote = q ? q : 1; | |
2389 | BT_DBG("chan %p quote %d", chan, *quote); | |
2390 | return chan; | |
2391 | } | |
2392 | ||
02b20f0b LAD |
2393 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2394 | { | |
2395 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2396 | struct hci_conn *conn; | |
2397 | int num = 0; | |
2398 | ||
2399 | BT_DBG("%s", hdev->name); | |
2400 | ||
bf4c6325 GP |
2401 | rcu_read_lock(); |
2402 | ||
2403 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2404 | struct hci_chan *chan; |
2405 | ||
2406 | if (conn->type != type) | |
2407 | continue; | |
2408 | ||
2409 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2410 | continue; | |
2411 | ||
2412 | num++; | |
2413 | ||
8192edef | 2414 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2415 | struct sk_buff *skb; |
2416 | ||
2417 | if (chan->sent) { | |
2418 | chan->sent = 0; | |
2419 | continue; | |
2420 | } | |
2421 | ||
2422 | if (skb_queue_empty(&chan->data_q)) | |
2423 | continue; | |
2424 | ||
2425 | skb = skb_peek(&chan->data_q); | |
2426 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2427 | continue; | |
2428 | ||
2429 | skb->priority = HCI_PRIO_MAX - 1; | |
2430 | ||
2431 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 2432 | skb->priority); |
02b20f0b LAD |
2433 | } |
2434 | ||
2435 | if (hci_conn_num(hdev, type) == num) | |
2436 | break; | |
2437 | } | |
bf4c6325 GP |
2438 | |
2439 | rcu_read_unlock(); | |
2440 | ||
02b20f0b LAD |
2441 | } |
2442 | ||
b71d385a AE |
2443 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
2444 | { | |
2445 | /* Calculate count of blocks used by this packet */ | |
2446 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
2447 | } | |
2448 | ||
6039aa73 | 2449 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 2450 | { |
1da177e4 LT |
2451 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2452 | /* ACL tx timeout must be longer than maximum | |
2453 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 2454 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 2455 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 2456 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 2457 | } |
63d2bc1b | 2458 | } |
1da177e4 | 2459 | |
6039aa73 | 2460 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
2461 | { |
2462 | unsigned int cnt = hdev->acl_cnt; | |
2463 | struct hci_chan *chan; | |
2464 | struct sk_buff *skb; | |
2465 | int quote; | |
2466 | ||
2467 | __check_timeout(hdev, cnt); | |
04837f64 | 2468 | |
73d80deb | 2469 | while (hdev->acl_cnt && |
a8c5fb1a | 2470 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
2471 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2472 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2473 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2474 | skb->len, skb->priority); |
73d80deb | 2475 | |
ec1cce24 LAD |
2476 | /* Stop if priority has changed */ |
2477 | if (skb->priority < priority) | |
2478 | break; | |
2479 | ||
2480 | skb = skb_dequeue(&chan->data_q); | |
2481 | ||
73d80deb | 2482 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 2483 | bt_cb(skb)->force_active); |
04837f64 | 2484 | |
1da177e4 LT |
2485 | hci_send_frame(skb); |
2486 | hdev->acl_last_tx = jiffies; | |
2487 | ||
2488 | hdev->acl_cnt--; | |
73d80deb LAD |
2489 | chan->sent++; |
2490 | chan->conn->sent++; | |
1da177e4 LT |
2491 | } |
2492 | } | |
02b20f0b LAD |
2493 | |
2494 | if (cnt != hdev->acl_cnt) | |
2495 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2496 | } |
2497 | ||
6039aa73 | 2498 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 2499 | { |
63d2bc1b | 2500 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
2501 | struct hci_chan *chan; |
2502 | struct sk_buff *skb; | |
2503 | int quote; | |
b71d385a | 2504 | |
63d2bc1b | 2505 | __check_timeout(hdev, cnt); |
b71d385a AE |
2506 | |
2507 | while (hdev->block_cnt > 0 && | |
a8c5fb1a | 2508 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
b71d385a AE |
2509 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2510 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
2511 | int blocks; | |
2512 | ||
2513 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 2514 | skb->len, skb->priority); |
b71d385a AE |
2515 | |
2516 | /* Stop if priority has changed */ | |
2517 | if (skb->priority < priority) | |
2518 | break; | |
2519 | ||
2520 | skb = skb_dequeue(&chan->data_q); | |
2521 | ||
2522 | blocks = __get_blocks(hdev, skb); | |
2523 | if (blocks > hdev->block_cnt) | |
2524 | return; | |
2525 | ||
2526 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 2527 | bt_cb(skb)->force_active); |
b71d385a AE |
2528 | |
2529 | hci_send_frame(skb); | |
2530 | hdev->acl_last_tx = jiffies; | |
2531 | ||
2532 | hdev->block_cnt -= blocks; | |
2533 | quote -= blocks; | |
2534 | ||
2535 | chan->sent += blocks; | |
2536 | chan->conn->sent += blocks; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | if (cnt != hdev->block_cnt) | |
2541 | hci_prio_recalculate(hdev, ACL_LINK); | |
2542 | } | |
2543 | ||
6039aa73 | 2544 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
2545 | { |
2546 | BT_DBG("%s", hdev->name); | |
2547 | ||
2548 | if (!hci_conn_num(hdev, ACL_LINK)) | |
2549 | return; | |
2550 | ||
2551 | switch (hdev->flow_ctl_mode) { | |
2552 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
2553 | hci_sched_acl_pkt(hdev); | |
2554 | break; | |
2555 | ||
2556 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
2557 | hci_sched_acl_blk(hdev); | |
2558 | break; | |
2559 | } | |
2560 | } | |
2561 | ||
1da177e4 | 2562 | /* Schedule SCO */ |
6039aa73 | 2563 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
2564 | { |
2565 | struct hci_conn *conn; | |
2566 | struct sk_buff *skb; | |
2567 | int quote; | |
2568 | ||
2569 | BT_DBG("%s", hdev->name); | |
2570 | ||
52087a79 LAD |
2571 | if (!hci_conn_num(hdev, SCO_LINK)) |
2572 | return; | |
2573 | ||
1da177e4 LT |
2574 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2575 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2576 | BT_DBG("skb %p len %d", skb, skb->len); | |
2577 | hci_send_frame(skb); | |
2578 | ||
2579 | conn->sent++; | |
2580 | if (conn->sent == ~0) | |
2581 | conn->sent = 0; | |
2582 | } | |
2583 | } | |
2584 | } | |
2585 | ||
6039aa73 | 2586 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
2587 | { |
2588 | struct hci_conn *conn; | |
2589 | struct sk_buff *skb; | |
2590 | int quote; | |
2591 | ||
2592 | BT_DBG("%s", hdev->name); | |
2593 | ||
52087a79 LAD |
2594 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2595 | return; | |
2596 | ||
8fc9ced3 GP |
2597 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
2598 | "e))) { | |
b6a0dc82 MH |
2599 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
2600 | BT_DBG("skb %p len %d", skb, skb->len); | |
2601 | hci_send_frame(skb); | |
2602 | ||
2603 | conn->sent++; | |
2604 | if (conn->sent == ~0) | |
2605 | conn->sent = 0; | |
2606 | } | |
2607 | } | |
2608 | } | |
2609 | ||
6039aa73 | 2610 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 2611 | { |
73d80deb | 2612 | struct hci_chan *chan; |
6ed58ec5 | 2613 | struct sk_buff *skb; |
02b20f0b | 2614 | int quote, cnt, tmp; |
6ed58ec5 VT |
2615 | |
2616 | BT_DBG("%s", hdev->name); | |
2617 | ||
52087a79 LAD |
2618 | if (!hci_conn_num(hdev, LE_LINK)) |
2619 | return; | |
2620 | ||
6ed58ec5 VT |
2621 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2622 | /* LE tx timeout must be longer than maximum | |
2623 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2624 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 2625 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2626 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2627 | } |
2628 | ||
2629 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2630 | tmp = cnt; |
73d80deb | 2631 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2632 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2633 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2634 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2635 | skb->len, skb->priority); |
6ed58ec5 | 2636 | |
ec1cce24 LAD |
2637 | /* Stop if priority has changed */ |
2638 | if (skb->priority < priority) | |
2639 | break; | |
2640 | ||
2641 | skb = skb_dequeue(&chan->data_q); | |
2642 | ||
6ed58ec5 VT |
2643 | hci_send_frame(skb); |
2644 | hdev->le_last_tx = jiffies; | |
2645 | ||
2646 | cnt--; | |
73d80deb LAD |
2647 | chan->sent++; |
2648 | chan->conn->sent++; | |
6ed58ec5 VT |
2649 | } |
2650 | } | |
73d80deb | 2651 | |
6ed58ec5 VT |
2652 | if (hdev->le_pkts) |
2653 | hdev->le_cnt = cnt; | |
2654 | else | |
2655 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2656 | |
2657 | if (cnt != tmp) | |
2658 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2659 | } |
2660 | ||
3eff45ea | 2661 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2662 | { |
3eff45ea | 2663 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2664 | struct sk_buff *skb; |
2665 | ||
6ed58ec5 | 2666 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 2667 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
2668 | |
2669 | /* Schedule queues and send stuff to HCI driver */ | |
2670 | ||
2671 | hci_sched_acl(hdev); | |
2672 | ||
2673 | hci_sched_sco(hdev); | |
2674 | ||
b6a0dc82 MH |
2675 | hci_sched_esco(hdev); |
2676 | ||
6ed58ec5 VT |
2677 | hci_sched_le(hdev); |
2678 | ||
1da177e4 LT |
2679 | /* Send next queued raw (unknown type) packet */ |
2680 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2681 | hci_send_frame(skb); | |
1da177e4 LT |
2682 | } |
2683 | ||
25985edc | 2684 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2685 | |
2686 | /* ACL data packet */ | |
6039aa73 | 2687 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2688 | { |
2689 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2690 | struct hci_conn *conn; | |
2691 | __u16 handle, flags; | |
2692 | ||
2693 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2694 | ||
2695 | handle = __le16_to_cpu(hdr->handle); | |
2696 | flags = hci_flags(handle); | |
2697 | handle = hci_handle(handle); | |
2698 | ||
a8c5fb1a GP |
2699 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, |
2700 | handle, flags); | |
1da177e4 LT |
2701 | |
2702 | hdev->stat.acl_rx++; | |
2703 | ||
2704 | hci_dev_lock(hdev); | |
2705 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2706 | hci_dev_unlock(hdev); | |
8e87d142 | 2707 | |
1da177e4 | 2708 | if (conn) { |
65983fc7 | 2709 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2710 | |
671267bf JH |
2711 | hci_dev_lock(hdev); |
2712 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && | |
2713 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) | |
2714 | mgmt_device_connected(hdev, &conn->dst, conn->type, | |
2715 | conn->dst_type, 0, NULL, 0, | |
2716 | conn->dev_class); | |
2717 | hci_dev_unlock(hdev); | |
2718 | ||
1da177e4 | 2719 | /* Send to upper protocol */ |
686ebf28 UF |
2720 | l2cap_recv_acldata(conn, skb, flags); |
2721 | return; | |
1da177e4 | 2722 | } else { |
8e87d142 | 2723 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 2724 | hdev->name, handle); |
1da177e4 LT |
2725 | } |
2726 | ||
2727 | kfree_skb(skb); | |
2728 | } | |
2729 | ||
2730 | /* SCO data packet */ | |
6039aa73 | 2731 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2732 | { |
2733 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2734 | struct hci_conn *conn; | |
2735 | __u16 handle; | |
2736 | ||
2737 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2738 | ||
2739 | handle = __le16_to_cpu(hdr->handle); | |
2740 | ||
2741 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); | |
2742 | ||
2743 | hdev->stat.sco_rx++; | |
2744 | ||
2745 | hci_dev_lock(hdev); | |
2746 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2747 | hci_dev_unlock(hdev); | |
2748 | ||
2749 | if (conn) { | |
1da177e4 | 2750 | /* Send to upper protocol */ |
686ebf28 UF |
2751 | sco_recv_scodata(conn, skb); |
2752 | return; | |
1da177e4 | 2753 | } else { |
8e87d142 | 2754 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 2755 | hdev->name, handle); |
1da177e4 LT |
2756 | } |
2757 | ||
2758 | kfree_skb(skb); | |
2759 | } | |
2760 | ||
b78752cc | 2761 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2762 | { |
b78752cc | 2763 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2764 | struct sk_buff *skb; |
2765 | ||
2766 | BT_DBG("%s", hdev->name); | |
2767 | ||
1da177e4 | 2768 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
2769 | /* Send copy to monitor */ |
2770 | hci_send_to_monitor(hdev, skb); | |
2771 | ||
1da177e4 LT |
2772 | if (atomic_read(&hdev->promisc)) { |
2773 | /* Send copy to the sockets */ | |
470fe1b5 | 2774 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2775 | } |
2776 | ||
2777 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2778 | kfree_skb(skb); | |
2779 | continue; | |
2780 | } | |
2781 | ||
2782 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2783 | /* Don't process data packets in this states. */ | |
0d48d939 | 2784 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2785 | case HCI_ACLDATA_PKT: |
2786 | case HCI_SCODATA_PKT: | |
2787 | kfree_skb(skb); | |
2788 | continue; | |
3ff50b79 | 2789 | } |
1da177e4 LT |
2790 | } |
2791 | ||
2792 | /* Process frame */ | |
0d48d939 | 2793 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2794 | case HCI_EVENT_PKT: |
b78752cc | 2795 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2796 | hci_event_packet(hdev, skb); |
2797 | break; | |
2798 | ||
2799 | case HCI_ACLDATA_PKT: | |
2800 | BT_DBG("%s ACL data packet", hdev->name); | |
2801 | hci_acldata_packet(hdev, skb); | |
2802 | break; | |
2803 | ||
2804 | case HCI_SCODATA_PKT: | |
2805 | BT_DBG("%s SCO data packet", hdev->name); | |
2806 | hci_scodata_packet(hdev, skb); | |
2807 | break; | |
2808 | ||
2809 | default: | |
2810 | kfree_skb(skb); | |
2811 | break; | |
2812 | } | |
2813 | } | |
1da177e4 LT |
2814 | } |
2815 | ||
c347b765 | 2816 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2817 | { |
c347b765 | 2818 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2819 | struct sk_buff *skb; |
2820 | ||
2821 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); | |
2822 | ||
1da177e4 | 2823 | /* Send queued commands */ |
5a08ecce AE |
2824 | if (atomic_read(&hdev->cmd_cnt)) { |
2825 | skb = skb_dequeue(&hdev->cmd_q); | |
2826 | if (!skb) | |
2827 | return; | |
2828 | ||
7585b97a | 2829 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2830 | |
70f23020 AE |
2831 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2832 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2833 | atomic_dec(&hdev->cmd_cnt); |
2834 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2835 | if (test_bit(HCI_RESET, &hdev->flags)) |
2836 | del_timer(&hdev->cmd_timer); | |
2837 | else | |
2838 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 2839 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
2840 | } else { |
2841 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2842 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2843 | } |
2844 | } | |
2845 | } | |
2519a1fc AG |
2846 | |
2847 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2848 | { | |
2849 | /* General inquiry access code (GIAC) */ | |
2850 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2851 | struct hci_cp_inquiry cp; | |
2852 | ||
2853 | BT_DBG("%s", hdev->name); | |
2854 | ||
2855 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2856 | return -EINPROGRESS; | |
2857 | ||
4663262c JH |
2858 | inquiry_cache_flush(hdev); |
2859 | ||
2519a1fc AG |
2860 | memset(&cp, 0, sizeof(cp)); |
2861 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2862 | cp.length = length; | |
2863 | ||
2864 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2865 | } | |
023d5049 AG |
2866 | |
2867 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2868 | { | |
2869 | BT_DBG("%s", hdev->name); | |
2870 | ||
2871 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 2872 | return -EALREADY; |
023d5049 AG |
2873 | |
2874 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2875 | } | |
31f7956c AG |
2876 | |
2877 | u8 bdaddr_to_le(u8 bdaddr_type) | |
2878 | { | |
2879 | switch (bdaddr_type) { | |
2880 | case BDADDR_LE_PUBLIC: | |
2881 | return ADDR_LE_DEV_PUBLIC; | |
2882 | ||
2883 | default: | |
2884 | /* Fallback to LE Random address type */ | |
2885 | return ADDR_LE_DEV_RANDOM; | |
2886 | } | |
2887 | } |