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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 | ||
b78752cc | 36 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 37 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 38 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* HCI device list */ |
41 | LIST_HEAD(hci_dev_list); | |
42 | DEFINE_RWLOCK(hci_dev_list_lock); | |
43 | ||
44 | /* HCI callback list */ | |
45 | LIST_HEAD(hci_cb_list); | |
46 | DEFINE_RWLOCK(hci_cb_list_lock); | |
47 | ||
3df92b31 SL |
48 | /* HCI ID Numbering */ |
49 | static DEFINE_IDA(hci_index_ida); | |
50 | ||
1da177e4 LT |
51 | /* ---- HCI notifications ---- */ |
52 | ||
6516455d | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 54 | { |
040030ef | 55 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
56 | } |
57 | ||
58 | /* ---- HCI requests ---- */ | |
59 | ||
23bb5763 | 60 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
1da177e4 | 61 | { |
f0e09510 | 62 | BT_DBG("%s command 0x%4.4x result 0x%2.2x", hdev->name, cmd, result); |
23bb5763 | 63 | |
a5040efa JH |
64 | /* If this is the init phase check if the completed command matches |
65 | * the last init command, and if not just return. | |
66 | */ | |
75fb0e32 JH |
67 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
68 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1036b890 | 69 | u16 opcode = __le16_to_cpu(sent->opcode); |
75fb0e32 JH |
70 | struct sk_buff *skb; |
71 | ||
72 | /* Some CSR based controllers generate a spontaneous | |
73 | * reset complete event during init and any pending | |
74 | * command will never be completed. In such a case we | |
75 | * need to resend whatever was the last sent | |
76 | * command. | |
77 | */ | |
78 | ||
1036b890 | 79 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
75fb0e32 JH |
80 | return; |
81 | ||
82 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); | |
83 | if (skb) { | |
84 | skb_queue_head(&hdev->cmd_q, skb); | |
85 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
86 | } | |
87 | ||
23bb5763 | 88 | return; |
75fb0e32 | 89 | } |
1da177e4 LT |
90 | |
91 | if (hdev->req_status == HCI_REQ_PEND) { | |
92 | hdev->req_result = result; | |
93 | hdev->req_status = HCI_REQ_DONE; | |
94 | wake_up_interruptible(&hdev->req_wait_q); | |
95 | } | |
96 | } | |
97 | ||
98 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
99 | { | |
100 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
101 | ||
102 | if (hdev->req_status == HCI_REQ_PEND) { | |
103 | hdev->req_result = err; | |
104 | hdev->req_status = HCI_REQ_CANCELED; | |
105 | wake_up_interruptible(&hdev->req_wait_q); | |
106 | } | |
107 | } | |
108 | ||
109 | /* Execute request and wait for completion. */ | |
a8c5fb1a GP |
110 | static int __hci_request(struct hci_dev *hdev, |
111 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
112 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
113 | { |
114 | DECLARE_WAITQUEUE(wait, current); | |
115 | int err = 0; | |
116 | ||
117 | BT_DBG("%s start", hdev->name); | |
118 | ||
119 | hdev->req_status = HCI_REQ_PEND; | |
120 | ||
121 | add_wait_queue(&hdev->req_wait_q, &wait); | |
122 | set_current_state(TASK_INTERRUPTIBLE); | |
123 | ||
124 | req(hdev, opt); | |
125 | schedule_timeout(timeout); | |
126 | ||
127 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
128 | ||
129 | if (signal_pending(current)) | |
130 | return -EINTR; | |
131 | ||
132 | switch (hdev->req_status) { | |
133 | case HCI_REQ_DONE: | |
e175072f | 134 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
135 | break; |
136 | ||
137 | case HCI_REQ_CANCELED: | |
138 | err = -hdev->req_result; | |
139 | break; | |
140 | ||
141 | default: | |
142 | err = -ETIMEDOUT; | |
143 | break; | |
3ff50b79 | 144 | } |
1da177e4 | 145 | |
a5040efa | 146 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
147 | |
148 | BT_DBG("%s end: err %d", hdev->name, err); | |
149 | ||
150 | return err; | |
151 | } | |
152 | ||
6039aa73 GP |
153 | static int hci_request(struct hci_dev *hdev, |
154 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
155 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
156 | { |
157 | int ret; | |
158 | ||
7c6a329e MH |
159 | if (!test_bit(HCI_UP, &hdev->flags)) |
160 | return -ENETDOWN; | |
161 | ||
1da177e4 LT |
162 | /* Serialize all requests */ |
163 | hci_req_lock(hdev); | |
164 | ret = __hci_request(hdev, req, opt, timeout); | |
165 | hci_req_unlock(hdev); | |
166 | ||
167 | return ret; | |
168 | } | |
169 | ||
170 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
171 | { | |
172 | BT_DBG("%s %ld", hdev->name, opt); | |
173 | ||
174 | /* Reset device */ | |
f630cf0d | 175 | set_bit(HCI_RESET, &hdev->flags); |
a9de9248 | 176 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
177 | } |
178 | ||
e61ef499 | 179 | static void bredr_init(struct hci_dev *hdev) |
1da177e4 | 180 | { |
b0916ea0 | 181 | struct hci_cp_delete_stored_link_key cp; |
1ebb9252 | 182 | __le16 param; |
89f2783d | 183 | __u8 flt_type; |
1da177e4 | 184 | |
2455a3ea AE |
185 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
186 | ||
1da177e4 LT |
187 | /* Mandatory initialization */ |
188 | ||
1da177e4 | 189 | /* Read Local Supported Features */ |
a9de9248 | 190 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 191 | |
1143e5a6 | 192 | /* Read Local Version */ |
a9de9248 | 193 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1143e5a6 | 194 | |
1da177e4 | 195 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
a9de9248 | 196 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
1da177e4 | 197 | |
1da177e4 | 198 | /* Read BD Address */ |
a9de9248 MH |
199 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
200 | ||
201 | /* Read Class of Device */ | |
202 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); | |
203 | ||
204 | /* Read Local Name */ | |
205 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); | |
1da177e4 LT |
206 | |
207 | /* Read Voice Setting */ | |
a9de9248 | 208 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
1da177e4 LT |
209 | |
210 | /* Optional initialization */ | |
211 | ||
212 | /* Clear Event Filters */ | |
89f2783d | 213 | flt_type = HCI_FLT_CLEAR_ALL; |
a9de9248 | 214 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
1da177e4 | 215 | |
1da177e4 | 216 | /* Connection accept timeout ~20 secs */ |
82781e63 | 217 | param = __constant_cpu_to_le16(0x7d00); |
a9de9248 | 218 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
b0916ea0 JH |
219 | |
220 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
221 | cp.delete_all = 1; | |
222 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); | |
1da177e4 LT |
223 | } |
224 | ||
e61ef499 AE |
225 | static void amp_init(struct hci_dev *hdev) |
226 | { | |
2455a3ea AE |
227 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
228 | ||
e61ef499 AE |
229 | /* Read Local Version */ |
230 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
6bcbc489 AE |
231 | |
232 | /* Read Local AMP Info */ | |
233 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); | |
e71dfaba AE |
234 | |
235 | /* Read Data Blk size */ | |
236 | hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); | |
e61ef499 AE |
237 | } |
238 | ||
239 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
240 | { | |
241 | struct sk_buff *skb; | |
242 | ||
243 | BT_DBG("%s %ld", hdev->name, opt); | |
244 | ||
245 | /* Driver initialization */ | |
246 | ||
247 | /* Special commands */ | |
248 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
249 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
250 | skb->dev = (void *) hdev; | |
251 | ||
252 | skb_queue_tail(&hdev->cmd_q, skb); | |
253 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
254 | } | |
255 | skb_queue_purge(&hdev->driver_init); | |
256 | ||
11778716 AE |
257 | /* Reset */ |
258 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
259 | hci_reset_req(hdev, 0); | |
260 | ||
e61ef499 AE |
261 | switch (hdev->dev_type) { |
262 | case HCI_BREDR: | |
263 | bredr_init(hdev); | |
264 | break; | |
265 | ||
266 | case HCI_AMP: | |
267 | amp_init(hdev); | |
268 | break; | |
269 | ||
270 | default: | |
271 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
272 | break; | |
273 | } | |
e61ef499 AE |
274 | } |
275 | ||
6ed58ec5 VT |
276 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
277 | { | |
278 | BT_DBG("%s", hdev->name); | |
279 | ||
280 | /* Read LE buffer size */ | |
281 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); | |
282 | } | |
283 | ||
1da177e4 LT |
284 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
285 | { | |
286 | __u8 scan = opt; | |
287 | ||
288 | BT_DBG("%s %x", hdev->name, scan); | |
289 | ||
290 | /* Inquiry and Page scans */ | |
a9de9248 | 291 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
292 | } |
293 | ||
294 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
295 | { | |
296 | __u8 auth = opt; | |
297 | ||
298 | BT_DBG("%s %x", hdev->name, auth); | |
299 | ||
300 | /* Authentication */ | |
a9de9248 | 301 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
302 | } |
303 | ||
304 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
305 | { | |
306 | __u8 encrypt = opt; | |
307 | ||
308 | BT_DBG("%s %x", hdev->name, encrypt); | |
309 | ||
e4e8e37c | 310 | /* Encryption */ |
a9de9248 | 311 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
312 | } |
313 | ||
e4e8e37c MH |
314 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
315 | { | |
316 | __le16 policy = cpu_to_le16(opt); | |
317 | ||
a418b893 | 318 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
319 | |
320 | /* Default link policy */ | |
321 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
322 | } | |
323 | ||
8e87d142 | 324 | /* Get HCI device by index. |
1da177e4 LT |
325 | * Device is held on return. */ |
326 | struct hci_dev *hci_dev_get(int index) | |
327 | { | |
8035ded4 | 328 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
329 | |
330 | BT_DBG("%d", index); | |
331 | ||
332 | if (index < 0) | |
333 | return NULL; | |
334 | ||
335 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 336 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
337 | if (d->id == index) { |
338 | hdev = hci_dev_hold(d); | |
339 | break; | |
340 | } | |
341 | } | |
342 | read_unlock(&hci_dev_list_lock); | |
343 | return hdev; | |
344 | } | |
1da177e4 LT |
345 | |
346 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 347 | |
30dc78e1 JH |
348 | bool hci_discovery_active(struct hci_dev *hdev) |
349 | { | |
350 | struct discovery_state *discov = &hdev->discovery; | |
351 | ||
6fbe195d | 352 | switch (discov->state) { |
343f935b | 353 | case DISCOVERY_FINDING: |
6fbe195d | 354 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
355 | return true; |
356 | ||
6fbe195d AG |
357 | default: |
358 | return false; | |
359 | } | |
30dc78e1 JH |
360 | } |
361 | ||
ff9ef578 JH |
362 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
363 | { | |
364 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
365 | ||
366 | if (hdev->discovery.state == state) | |
367 | return; | |
368 | ||
369 | switch (state) { | |
370 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
371 | if (hdev->discovery.state != DISCOVERY_STARTING) |
372 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
373 | break; |
374 | case DISCOVERY_STARTING: | |
375 | break; | |
343f935b | 376 | case DISCOVERY_FINDING: |
ff9ef578 JH |
377 | mgmt_discovering(hdev, 1); |
378 | break; | |
30dc78e1 JH |
379 | case DISCOVERY_RESOLVING: |
380 | break; | |
ff9ef578 JH |
381 | case DISCOVERY_STOPPING: |
382 | break; | |
383 | } | |
384 | ||
385 | hdev->discovery.state = state; | |
386 | } | |
387 | ||
1da177e4 LT |
388 | static void inquiry_cache_flush(struct hci_dev *hdev) |
389 | { | |
30883512 | 390 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 391 | struct inquiry_entry *p, *n; |
1da177e4 | 392 | |
561aafbc JH |
393 | list_for_each_entry_safe(p, n, &cache->all, all) { |
394 | list_del(&p->all); | |
b57c1a56 | 395 | kfree(p); |
1da177e4 | 396 | } |
561aafbc JH |
397 | |
398 | INIT_LIST_HEAD(&cache->unknown); | |
399 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
400 | } |
401 | ||
a8c5fb1a GP |
402 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
403 | bdaddr_t *bdaddr) | |
1da177e4 | 404 | { |
30883512 | 405 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
406 | struct inquiry_entry *e; |
407 | ||
408 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
409 | ||
561aafbc JH |
410 | list_for_each_entry(e, &cache->all, all) { |
411 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
412 | return e; | |
413 | } | |
414 | ||
415 | return NULL; | |
416 | } | |
417 | ||
418 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 419 | bdaddr_t *bdaddr) |
561aafbc | 420 | { |
30883512 | 421 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
422 | struct inquiry_entry *e; |
423 | ||
424 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
425 | ||
426 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 427 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
428 | return e; |
429 | } | |
430 | ||
431 | return NULL; | |
1da177e4 LT |
432 | } |
433 | ||
30dc78e1 | 434 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
435 | bdaddr_t *bdaddr, |
436 | int state) | |
30dc78e1 JH |
437 | { |
438 | struct discovery_state *cache = &hdev->discovery; | |
439 | struct inquiry_entry *e; | |
440 | ||
441 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); | |
442 | ||
443 | list_for_each_entry(e, &cache->resolve, list) { | |
444 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
445 | return e; | |
446 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
447 | return e; | |
448 | } | |
449 | ||
450 | return NULL; | |
451 | } | |
452 | ||
a3d4e20a | 453 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 454 | struct inquiry_entry *ie) |
a3d4e20a JH |
455 | { |
456 | struct discovery_state *cache = &hdev->discovery; | |
457 | struct list_head *pos = &cache->resolve; | |
458 | struct inquiry_entry *p; | |
459 | ||
460 | list_del(&ie->list); | |
461 | ||
462 | list_for_each_entry(p, &cache->resolve, list) { | |
463 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 464 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
465 | break; |
466 | pos = &p->list; | |
467 | } | |
468 | ||
469 | list_add(&ie->list, pos); | |
470 | } | |
471 | ||
3175405b | 472 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 473 | bool name_known, bool *ssp) |
1da177e4 | 474 | { |
30883512 | 475 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 476 | struct inquiry_entry *ie; |
1da177e4 LT |
477 | |
478 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
479 | ||
388fc8fa JH |
480 | if (ssp) |
481 | *ssp = data->ssp_mode; | |
482 | ||
70f23020 | 483 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 484 | if (ie) { |
388fc8fa JH |
485 | if (ie->data.ssp_mode && ssp) |
486 | *ssp = true; | |
487 | ||
a3d4e20a | 488 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 489 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
490 | ie->data.rssi = data->rssi; |
491 | hci_inquiry_cache_update_resolve(hdev, ie); | |
492 | } | |
493 | ||
561aafbc | 494 | goto update; |
a3d4e20a | 495 | } |
561aafbc JH |
496 | |
497 | /* Entry not in the cache. Add new one. */ | |
498 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
499 | if (!ie) | |
3175405b | 500 | return false; |
561aafbc JH |
501 | |
502 | list_add(&ie->all, &cache->all); | |
503 | ||
504 | if (name_known) { | |
505 | ie->name_state = NAME_KNOWN; | |
506 | } else { | |
507 | ie->name_state = NAME_NOT_KNOWN; | |
508 | list_add(&ie->list, &cache->unknown); | |
509 | } | |
70f23020 | 510 | |
561aafbc JH |
511 | update: |
512 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 513 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
514 | ie->name_state = NAME_KNOWN; |
515 | list_del(&ie->list); | |
1da177e4 LT |
516 | } |
517 | ||
70f23020 AE |
518 | memcpy(&ie->data, data, sizeof(*data)); |
519 | ie->timestamp = jiffies; | |
1da177e4 | 520 | cache->timestamp = jiffies; |
3175405b JH |
521 | |
522 | if (ie->name_state == NAME_NOT_KNOWN) | |
523 | return false; | |
524 | ||
525 | return true; | |
1da177e4 LT |
526 | } |
527 | ||
528 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
529 | { | |
30883512 | 530 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
531 | struct inquiry_info *info = (struct inquiry_info *) buf; |
532 | struct inquiry_entry *e; | |
533 | int copied = 0; | |
534 | ||
561aafbc | 535 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 536 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
537 | |
538 | if (copied >= num) | |
539 | break; | |
540 | ||
1da177e4 LT |
541 | bacpy(&info->bdaddr, &data->bdaddr); |
542 | info->pscan_rep_mode = data->pscan_rep_mode; | |
543 | info->pscan_period_mode = data->pscan_period_mode; | |
544 | info->pscan_mode = data->pscan_mode; | |
545 | memcpy(info->dev_class, data->dev_class, 3); | |
546 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 547 | |
1da177e4 | 548 | info++; |
b57c1a56 | 549 | copied++; |
1da177e4 LT |
550 | } |
551 | ||
552 | BT_DBG("cache %p, copied %d", cache, copied); | |
553 | return copied; | |
554 | } | |
555 | ||
556 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
557 | { | |
558 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
559 | struct hci_cp_inquiry cp; | |
560 | ||
561 | BT_DBG("%s", hdev->name); | |
562 | ||
563 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
564 | return; | |
565 | ||
566 | /* Start Inquiry */ | |
567 | memcpy(&cp.lap, &ir->lap, 3); | |
568 | cp.length = ir->length; | |
569 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 570 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
571 | } |
572 | ||
573 | int hci_inquiry(void __user *arg) | |
574 | { | |
575 | __u8 __user *ptr = arg; | |
576 | struct hci_inquiry_req ir; | |
577 | struct hci_dev *hdev; | |
578 | int err = 0, do_inquiry = 0, max_rsp; | |
579 | long timeo; | |
580 | __u8 *buf; | |
581 | ||
582 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
583 | return -EFAULT; | |
584 | ||
5a08ecce AE |
585 | hdev = hci_dev_get(ir.dev_id); |
586 | if (!hdev) | |
1da177e4 LT |
587 | return -ENODEV; |
588 | ||
09fd0de5 | 589 | hci_dev_lock(hdev); |
8e87d142 | 590 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 591 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
592 | inquiry_cache_flush(hdev); |
593 | do_inquiry = 1; | |
594 | } | |
09fd0de5 | 595 | hci_dev_unlock(hdev); |
1da177e4 | 596 | |
04837f64 | 597 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
598 | |
599 | if (do_inquiry) { | |
600 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
601 | if (err < 0) | |
602 | goto done; | |
603 | } | |
1da177e4 | 604 | |
8fc9ced3 GP |
605 | /* for unlimited number of responses we will use buffer with |
606 | * 255 entries | |
607 | */ | |
1da177e4 LT |
608 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
609 | ||
610 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
611 | * copy it to the user space. | |
612 | */ | |
01df8c31 | 613 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 614 | if (!buf) { |
1da177e4 LT |
615 | err = -ENOMEM; |
616 | goto done; | |
617 | } | |
618 | ||
09fd0de5 | 619 | hci_dev_lock(hdev); |
1da177e4 | 620 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 621 | hci_dev_unlock(hdev); |
1da177e4 LT |
622 | |
623 | BT_DBG("num_rsp %d", ir.num_rsp); | |
624 | ||
625 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
626 | ptr += sizeof(ir); | |
627 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 628 | ir.num_rsp)) |
1da177e4 | 629 | err = -EFAULT; |
8e87d142 | 630 | } else |
1da177e4 LT |
631 | err = -EFAULT; |
632 | ||
633 | kfree(buf); | |
634 | ||
635 | done: | |
636 | hci_dev_put(hdev); | |
637 | return err; | |
638 | } | |
639 | ||
640 | /* ---- HCI ioctl helpers ---- */ | |
641 | ||
642 | int hci_dev_open(__u16 dev) | |
643 | { | |
644 | struct hci_dev *hdev; | |
645 | int ret = 0; | |
646 | ||
5a08ecce AE |
647 | hdev = hci_dev_get(dev); |
648 | if (!hdev) | |
1da177e4 LT |
649 | return -ENODEV; |
650 | ||
651 | BT_DBG("%s %p", hdev->name, hdev); | |
652 | ||
653 | hci_req_lock(hdev); | |
654 | ||
94324962 JH |
655 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
656 | ret = -ENODEV; | |
657 | goto done; | |
658 | } | |
659 | ||
611b30f7 MH |
660 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
661 | ret = -ERFKILL; | |
662 | goto done; | |
663 | } | |
664 | ||
1da177e4 LT |
665 | if (test_bit(HCI_UP, &hdev->flags)) { |
666 | ret = -EALREADY; | |
667 | goto done; | |
668 | } | |
669 | ||
670 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
671 | set_bit(HCI_RAW, &hdev->flags); | |
672 | ||
07e3b94a AE |
673 | /* Treat all non BR/EDR controllers as raw devices if |
674 | enable_hs is not set */ | |
675 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
676 | set_bit(HCI_RAW, &hdev->flags); |
677 | ||
1da177e4 LT |
678 | if (hdev->open(hdev)) { |
679 | ret = -EIO; | |
680 | goto done; | |
681 | } | |
682 | ||
683 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
684 | atomic_set(&hdev->cmd_cnt, 1); | |
685 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 686 | hdev->init_last_cmd = 0; |
1da177e4 | 687 | |
5f246e89 | 688 | ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 | 689 | |
eead27da | 690 | if (lmp_host_le_capable(hdev)) |
6ed58ec5 | 691 | ret = __hci_request(hdev, hci_le_init_req, 0, |
5f246e89 | 692 | HCI_INIT_TIMEOUT); |
6ed58ec5 | 693 | |
1da177e4 LT |
694 | clear_bit(HCI_INIT, &hdev->flags); |
695 | } | |
696 | ||
697 | if (!ret) { | |
698 | hci_dev_hold(hdev); | |
699 | set_bit(HCI_UP, &hdev->flags); | |
700 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a AE |
701 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
702 | mgmt_valid_hdev(hdev)) { | |
09fd0de5 | 703 | hci_dev_lock(hdev); |
744cf19e | 704 | mgmt_powered(hdev, 1); |
09fd0de5 | 705 | hci_dev_unlock(hdev); |
56e5cb86 | 706 | } |
8e87d142 | 707 | } else { |
1da177e4 | 708 | /* Init failed, cleanup */ |
3eff45ea | 709 | flush_work(&hdev->tx_work); |
c347b765 | 710 | flush_work(&hdev->cmd_work); |
b78752cc | 711 | flush_work(&hdev->rx_work); |
1da177e4 LT |
712 | |
713 | skb_queue_purge(&hdev->cmd_q); | |
714 | skb_queue_purge(&hdev->rx_q); | |
715 | ||
716 | if (hdev->flush) | |
717 | hdev->flush(hdev); | |
718 | ||
719 | if (hdev->sent_cmd) { | |
720 | kfree_skb(hdev->sent_cmd); | |
721 | hdev->sent_cmd = NULL; | |
722 | } | |
723 | ||
724 | hdev->close(hdev); | |
725 | hdev->flags = 0; | |
726 | } | |
727 | ||
728 | done: | |
729 | hci_req_unlock(hdev); | |
730 | hci_dev_put(hdev); | |
731 | return ret; | |
732 | } | |
733 | ||
734 | static int hci_dev_do_close(struct hci_dev *hdev) | |
735 | { | |
736 | BT_DBG("%s %p", hdev->name, hdev); | |
737 | ||
28b75a89 AG |
738 | cancel_work_sync(&hdev->le_scan); |
739 | ||
78c04c0b VCG |
740 | cancel_delayed_work(&hdev->power_off); |
741 | ||
1da177e4 LT |
742 | hci_req_cancel(hdev, ENODEV); |
743 | hci_req_lock(hdev); | |
744 | ||
745 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 746 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
747 | hci_req_unlock(hdev); |
748 | return 0; | |
749 | } | |
750 | ||
3eff45ea GP |
751 | /* Flush RX and TX works */ |
752 | flush_work(&hdev->tx_work); | |
b78752cc | 753 | flush_work(&hdev->rx_work); |
1da177e4 | 754 | |
16ab91ab | 755 | if (hdev->discov_timeout > 0) { |
e0f9309f | 756 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 757 | hdev->discov_timeout = 0; |
5e5282bb | 758 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
759 | } |
760 | ||
a8b2d5c2 | 761 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
762 | cancel_delayed_work(&hdev->service_cache); |
763 | ||
7ba8b4be AG |
764 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
765 | ||
09fd0de5 | 766 | hci_dev_lock(hdev); |
1da177e4 LT |
767 | inquiry_cache_flush(hdev); |
768 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 769 | hci_dev_unlock(hdev); |
1da177e4 LT |
770 | |
771 | hci_notify(hdev, HCI_DEV_DOWN); | |
772 | ||
773 | if (hdev->flush) | |
774 | hdev->flush(hdev); | |
775 | ||
776 | /* Reset device */ | |
777 | skb_queue_purge(&hdev->cmd_q); | |
778 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 779 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 780 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 781 | set_bit(HCI_INIT, &hdev->flags); |
5f246e89 | 782 | __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
783 | clear_bit(HCI_INIT, &hdev->flags); |
784 | } | |
785 | ||
c347b765 GP |
786 | /* flush cmd work */ |
787 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
788 | |
789 | /* Drop queues */ | |
790 | skb_queue_purge(&hdev->rx_q); | |
791 | skb_queue_purge(&hdev->cmd_q); | |
792 | skb_queue_purge(&hdev->raw_q); | |
793 | ||
794 | /* Drop last sent command */ | |
795 | if (hdev->sent_cmd) { | |
b79f44c1 | 796 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
797 | kfree_skb(hdev->sent_cmd); |
798 | hdev->sent_cmd = NULL; | |
799 | } | |
800 | ||
801 | /* After this point our queues are empty | |
802 | * and no tasks are scheduled. */ | |
803 | hdev->close(hdev); | |
804 | ||
bb4b2a9a AE |
805 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
806 | mgmt_valid_hdev(hdev)) { | |
8ee56540 MH |
807 | hci_dev_lock(hdev); |
808 | mgmt_powered(hdev, 0); | |
809 | hci_dev_unlock(hdev); | |
810 | } | |
5add6af8 | 811 | |
1da177e4 LT |
812 | /* Clear flags */ |
813 | hdev->flags = 0; | |
814 | ||
e59fda8d | 815 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 816 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 817 | |
1da177e4 LT |
818 | hci_req_unlock(hdev); |
819 | ||
820 | hci_dev_put(hdev); | |
821 | return 0; | |
822 | } | |
823 | ||
824 | int hci_dev_close(__u16 dev) | |
825 | { | |
826 | struct hci_dev *hdev; | |
827 | int err; | |
828 | ||
70f23020 AE |
829 | hdev = hci_dev_get(dev); |
830 | if (!hdev) | |
1da177e4 | 831 | return -ENODEV; |
8ee56540 MH |
832 | |
833 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
834 | cancel_delayed_work(&hdev->power_off); | |
835 | ||
1da177e4 | 836 | err = hci_dev_do_close(hdev); |
8ee56540 | 837 | |
1da177e4 LT |
838 | hci_dev_put(hdev); |
839 | return err; | |
840 | } | |
841 | ||
842 | int hci_dev_reset(__u16 dev) | |
843 | { | |
844 | struct hci_dev *hdev; | |
845 | int ret = 0; | |
846 | ||
70f23020 AE |
847 | hdev = hci_dev_get(dev); |
848 | if (!hdev) | |
1da177e4 LT |
849 | return -ENODEV; |
850 | ||
851 | hci_req_lock(hdev); | |
1da177e4 LT |
852 | |
853 | if (!test_bit(HCI_UP, &hdev->flags)) | |
854 | goto done; | |
855 | ||
856 | /* Drop queues */ | |
857 | skb_queue_purge(&hdev->rx_q); | |
858 | skb_queue_purge(&hdev->cmd_q); | |
859 | ||
09fd0de5 | 860 | hci_dev_lock(hdev); |
1da177e4 LT |
861 | inquiry_cache_flush(hdev); |
862 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 863 | hci_dev_unlock(hdev); |
1da177e4 LT |
864 | |
865 | if (hdev->flush) | |
866 | hdev->flush(hdev); | |
867 | ||
8e87d142 | 868 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 869 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
870 | |
871 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
5f246e89 | 872 | ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
873 | |
874 | done: | |
1da177e4 LT |
875 | hci_req_unlock(hdev); |
876 | hci_dev_put(hdev); | |
877 | return ret; | |
878 | } | |
879 | ||
880 | int hci_dev_reset_stat(__u16 dev) | |
881 | { | |
882 | struct hci_dev *hdev; | |
883 | int ret = 0; | |
884 | ||
70f23020 AE |
885 | hdev = hci_dev_get(dev); |
886 | if (!hdev) | |
1da177e4 LT |
887 | return -ENODEV; |
888 | ||
889 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
890 | ||
891 | hci_dev_put(hdev); | |
892 | ||
893 | return ret; | |
894 | } | |
895 | ||
896 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
897 | { | |
898 | struct hci_dev *hdev; | |
899 | struct hci_dev_req dr; | |
900 | int err = 0; | |
901 | ||
902 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
903 | return -EFAULT; | |
904 | ||
70f23020 AE |
905 | hdev = hci_dev_get(dr.dev_id); |
906 | if (!hdev) | |
1da177e4 LT |
907 | return -ENODEV; |
908 | ||
909 | switch (cmd) { | |
910 | case HCISETAUTH: | |
04837f64 | 911 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 912 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
913 | break; |
914 | ||
915 | case HCISETENCRYPT: | |
916 | if (!lmp_encrypt_capable(hdev)) { | |
917 | err = -EOPNOTSUPP; | |
918 | break; | |
919 | } | |
920 | ||
921 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
922 | /* Auth must be enabled first */ | |
04837f64 | 923 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
5f246e89 | 924 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
925 | if (err) |
926 | break; | |
927 | } | |
928 | ||
04837f64 | 929 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
5f246e89 | 930 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
931 | break; |
932 | ||
933 | case HCISETSCAN: | |
04837f64 | 934 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
5f246e89 | 935 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
936 | break; |
937 | ||
1da177e4 | 938 | case HCISETLINKPOL: |
e4e8e37c | 939 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
5f246e89 | 940 | HCI_INIT_TIMEOUT); |
1da177e4 LT |
941 | break; |
942 | ||
943 | case HCISETLINKMODE: | |
e4e8e37c MH |
944 | hdev->link_mode = ((__u16) dr.dev_opt) & |
945 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
946 | break; | |
947 | ||
948 | case HCISETPTYPE: | |
949 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
950 | break; |
951 | ||
952 | case HCISETACLMTU: | |
e4e8e37c MH |
953 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
954 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
955 | break; |
956 | ||
957 | case HCISETSCOMTU: | |
e4e8e37c MH |
958 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
959 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
960 | break; |
961 | ||
962 | default: | |
963 | err = -EINVAL; | |
964 | break; | |
965 | } | |
e4e8e37c | 966 | |
1da177e4 LT |
967 | hci_dev_put(hdev); |
968 | return err; | |
969 | } | |
970 | ||
971 | int hci_get_dev_list(void __user *arg) | |
972 | { | |
8035ded4 | 973 | struct hci_dev *hdev; |
1da177e4 LT |
974 | struct hci_dev_list_req *dl; |
975 | struct hci_dev_req *dr; | |
1da177e4 LT |
976 | int n = 0, size, err; |
977 | __u16 dev_num; | |
978 | ||
979 | if (get_user(dev_num, (__u16 __user *) arg)) | |
980 | return -EFAULT; | |
981 | ||
982 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
983 | return -EINVAL; | |
984 | ||
985 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
986 | ||
70f23020 AE |
987 | dl = kzalloc(size, GFP_KERNEL); |
988 | if (!dl) | |
1da177e4 LT |
989 | return -ENOMEM; |
990 | ||
991 | dr = dl->dev_req; | |
992 | ||
f20d09d5 | 993 | read_lock(&hci_dev_list_lock); |
8035ded4 | 994 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 995 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 996 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 997 | |
a8b2d5c2 JH |
998 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
999 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1000 | |
1da177e4 LT |
1001 | (dr + n)->dev_id = hdev->id; |
1002 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1003 | |
1da177e4 LT |
1004 | if (++n >= dev_num) |
1005 | break; | |
1006 | } | |
f20d09d5 | 1007 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1008 | |
1009 | dl->dev_num = n; | |
1010 | size = sizeof(*dl) + n * sizeof(*dr); | |
1011 | ||
1012 | err = copy_to_user(arg, dl, size); | |
1013 | kfree(dl); | |
1014 | ||
1015 | return err ? -EFAULT : 0; | |
1016 | } | |
1017 | ||
1018 | int hci_get_dev_info(void __user *arg) | |
1019 | { | |
1020 | struct hci_dev *hdev; | |
1021 | struct hci_dev_info di; | |
1022 | int err = 0; | |
1023 | ||
1024 | if (copy_from_user(&di, arg, sizeof(di))) | |
1025 | return -EFAULT; | |
1026 | ||
70f23020 AE |
1027 | hdev = hci_dev_get(di.dev_id); |
1028 | if (!hdev) | |
1da177e4 LT |
1029 | return -ENODEV; |
1030 | ||
a8b2d5c2 | 1031 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1032 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1033 | |
a8b2d5c2 JH |
1034 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1035 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1036 | |
1da177e4 LT |
1037 | strcpy(di.name, hdev->name); |
1038 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1039 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1040 | di.flags = hdev->flags; |
1041 | di.pkt_type = hdev->pkt_type; | |
1042 | di.acl_mtu = hdev->acl_mtu; | |
1043 | di.acl_pkts = hdev->acl_pkts; | |
1044 | di.sco_mtu = hdev->sco_mtu; | |
1045 | di.sco_pkts = hdev->sco_pkts; | |
1046 | di.link_policy = hdev->link_policy; | |
1047 | di.link_mode = hdev->link_mode; | |
1048 | ||
1049 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1050 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1051 | ||
1052 | if (copy_to_user(arg, &di, sizeof(di))) | |
1053 | err = -EFAULT; | |
1054 | ||
1055 | hci_dev_put(hdev); | |
1056 | ||
1057 | return err; | |
1058 | } | |
1059 | ||
1060 | /* ---- Interface to HCI drivers ---- */ | |
1061 | ||
611b30f7 MH |
1062 | static int hci_rfkill_set_block(void *data, bool blocked) |
1063 | { | |
1064 | struct hci_dev *hdev = data; | |
1065 | ||
1066 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1067 | ||
1068 | if (!blocked) | |
1069 | return 0; | |
1070 | ||
1071 | hci_dev_do_close(hdev); | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static const struct rfkill_ops hci_rfkill_ops = { | |
1077 | .set_block = hci_rfkill_set_block, | |
1078 | }; | |
1079 | ||
ab81cbf9 JH |
1080 | static void hci_power_on(struct work_struct *work) |
1081 | { | |
1082 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1083 | ||
1084 | BT_DBG("%s", hdev->name); | |
1085 | ||
1086 | if (hci_dev_open(hdev->id) < 0) | |
1087 | return; | |
1088 | ||
a8b2d5c2 | 1089 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
9345d40c | 1090 | schedule_delayed_work(&hdev->power_off, HCI_AUTO_OFF_TIMEOUT); |
ab81cbf9 | 1091 | |
a8b2d5c2 | 1092 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1093 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1094 | } |
1095 | ||
1096 | static void hci_power_off(struct work_struct *work) | |
1097 | { | |
3243553f | 1098 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1099 | power_off.work); |
ab81cbf9 JH |
1100 | |
1101 | BT_DBG("%s", hdev->name); | |
1102 | ||
8ee56540 | 1103 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1104 | } |
1105 | ||
16ab91ab JH |
1106 | static void hci_discov_off(struct work_struct *work) |
1107 | { | |
1108 | struct hci_dev *hdev; | |
1109 | u8 scan = SCAN_PAGE; | |
1110 | ||
1111 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1112 | ||
1113 | BT_DBG("%s", hdev->name); | |
1114 | ||
09fd0de5 | 1115 | hci_dev_lock(hdev); |
16ab91ab JH |
1116 | |
1117 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1118 | ||
1119 | hdev->discov_timeout = 0; | |
1120 | ||
09fd0de5 | 1121 | hci_dev_unlock(hdev); |
16ab91ab JH |
1122 | } |
1123 | ||
2aeb9a1a JH |
1124 | int hci_uuids_clear(struct hci_dev *hdev) |
1125 | { | |
1126 | struct list_head *p, *n; | |
1127 | ||
1128 | list_for_each_safe(p, n, &hdev->uuids) { | |
1129 | struct bt_uuid *uuid; | |
1130 | ||
1131 | uuid = list_entry(p, struct bt_uuid, list); | |
1132 | ||
1133 | list_del(p); | |
1134 | kfree(uuid); | |
1135 | } | |
1136 | ||
1137 | return 0; | |
1138 | } | |
1139 | ||
55ed8ca1 JH |
1140 | int hci_link_keys_clear(struct hci_dev *hdev) |
1141 | { | |
1142 | struct list_head *p, *n; | |
1143 | ||
1144 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1145 | struct link_key *key; | |
1146 | ||
1147 | key = list_entry(p, struct link_key, list); | |
1148 | ||
1149 | list_del(p); | |
1150 | kfree(key); | |
1151 | } | |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
b899efaf VCG |
1156 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1157 | { | |
1158 | struct smp_ltk *k, *tmp; | |
1159 | ||
1160 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1161 | list_del(&k->list); | |
1162 | kfree(k); | |
1163 | } | |
1164 | ||
1165 | return 0; | |
1166 | } | |
1167 | ||
55ed8ca1 JH |
1168 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1169 | { | |
8035ded4 | 1170 | struct link_key *k; |
55ed8ca1 | 1171 | |
8035ded4 | 1172 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1173 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1174 | return k; | |
55ed8ca1 JH |
1175 | |
1176 | return NULL; | |
1177 | } | |
1178 | ||
745c0ce3 | 1179 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1180 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1181 | { |
1182 | /* Legacy key */ | |
1183 | if (key_type < 0x03) | |
745c0ce3 | 1184 | return true; |
d25e28ab JH |
1185 | |
1186 | /* Debug keys are insecure so don't store them persistently */ | |
1187 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1188 | return false; |
d25e28ab JH |
1189 | |
1190 | /* Changed combination key and there's no previous one */ | |
1191 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1192 | return false; |
d25e28ab JH |
1193 | |
1194 | /* Security mode 3 case */ | |
1195 | if (!conn) | |
745c0ce3 | 1196 | return true; |
d25e28ab JH |
1197 | |
1198 | /* Neither local nor remote side had no-bonding as requirement */ | |
1199 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1200 | return true; |
d25e28ab JH |
1201 | |
1202 | /* Local side had dedicated bonding as requirement */ | |
1203 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1204 | return true; |
d25e28ab JH |
1205 | |
1206 | /* Remote side had dedicated bonding as requirement */ | |
1207 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1208 | return true; |
d25e28ab JH |
1209 | |
1210 | /* If none of the above criteria match, then don't store the key | |
1211 | * persistently */ | |
745c0ce3 | 1212 | return false; |
d25e28ab JH |
1213 | } |
1214 | ||
c9839a11 | 1215 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1216 | { |
c9839a11 | 1217 | struct smp_ltk *k; |
75d262c2 | 1218 | |
c9839a11 VCG |
1219 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1220 | if (k->ediv != ediv || | |
a8c5fb1a | 1221 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1222 | continue; |
1223 | ||
c9839a11 | 1224 | return k; |
75d262c2 VCG |
1225 | } |
1226 | ||
1227 | return NULL; | |
1228 | } | |
75d262c2 | 1229 | |
c9839a11 | 1230 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1231 | u8 addr_type) |
75d262c2 | 1232 | { |
c9839a11 | 1233 | struct smp_ltk *k; |
75d262c2 | 1234 | |
c9839a11 VCG |
1235 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1236 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1237 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1238 | return k; |
1239 | ||
1240 | return NULL; | |
1241 | } | |
75d262c2 | 1242 | |
d25e28ab | 1243 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1244 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1245 | { |
1246 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1247 | u8 old_key_type; |
1248 | bool persistent; | |
55ed8ca1 JH |
1249 | |
1250 | old_key = hci_find_link_key(hdev, bdaddr); | |
1251 | if (old_key) { | |
1252 | old_key_type = old_key->type; | |
1253 | key = old_key; | |
1254 | } else { | |
12adcf3a | 1255 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1256 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1257 | if (!key) | |
1258 | return -ENOMEM; | |
1259 | list_add(&key->list, &hdev->link_keys); | |
1260 | } | |
1261 | ||
1262 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); | |
1263 | ||
d25e28ab JH |
1264 | /* Some buggy controller combinations generate a changed |
1265 | * combination key for legacy pairing even when there's no | |
1266 | * previous key */ | |
1267 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1268 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1269 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1270 | if (conn) |
1271 | conn->key_type = type; | |
1272 | } | |
d25e28ab | 1273 | |
55ed8ca1 | 1274 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 1275 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
1276 | key->pin_len = pin_len; |
1277 | ||
b6020ba0 | 1278 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1279 | key->type = old_key_type; |
4748fed2 JH |
1280 | else |
1281 | key->type = type; | |
1282 | ||
4df378a1 JH |
1283 | if (!new_key) |
1284 | return 0; | |
1285 | ||
1286 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1287 | ||
744cf19e | 1288 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1289 | |
6ec5bcad VA |
1290 | if (conn) |
1291 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1292 | |
1293 | return 0; | |
1294 | } | |
1295 | ||
c9839a11 | 1296 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1297 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1298 | ediv, u8 rand[8]) |
75d262c2 | 1299 | { |
c9839a11 | 1300 | struct smp_ltk *key, *old_key; |
75d262c2 | 1301 | |
c9839a11 VCG |
1302 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1303 | return 0; | |
75d262c2 | 1304 | |
c9839a11 VCG |
1305 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1306 | if (old_key) | |
75d262c2 | 1307 | key = old_key; |
c9839a11 VCG |
1308 | else { |
1309 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1310 | if (!key) |
1311 | return -ENOMEM; | |
c9839a11 | 1312 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1313 | } |
1314 | ||
75d262c2 | 1315 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1316 | key->bdaddr_type = addr_type; |
1317 | memcpy(key->val, tk, sizeof(key->val)); | |
1318 | key->authenticated = authenticated; | |
1319 | key->ediv = ediv; | |
1320 | key->enc_size = enc_size; | |
1321 | key->type = type; | |
1322 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1323 | |
c9839a11 VCG |
1324 | if (!new_key) |
1325 | return 0; | |
75d262c2 | 1326 | |
261cc5aa VCG |
1327 | if (type & HCI_SMP_LTK) |
1328 | mgmt_new_ltk(hdev, key, 1); | |
1329 | ||
75d262c2 VCG |
1330 | return 0; |
1331 | } | |
1332 | ||
55ed8ca1 JH |
1333 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1334 | { | |
1335 | struct link_key *key; | |
1336 | ||
1337 | key = hci_find_link_key(hdev, bdaddr); | |
1338 | if (!key) | |
1339 | return -ENOENT; | |
1340 | ||
1341 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1342 | ||
1343 | list_del(&key->list); | |
1344 | kfree(key); | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
b899efaf VCG |
1349 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1350 | { | |
1351 | struct smp_ltk *k, *tmp; | |
1352 | ||
1353 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1354 | if (bacmp(bdaddr, &k->bdaddr)) | |
1355 | continue; | |
1356 | ||
1357 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1358 | ||
1359 | list_del(&k->list); | |
1360 | kfree(k); | |
1361 | } | |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
6bd32326 | 1366 | /* HCI command timer function */ |
bda4f23a | 1367 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
1368 | { |
1369 | struct hci_dev *hdev = (void *) arg; | |
1370 | ||
bda4f23a AE |
1371 | if (hdev->sent_cmd) { |
1372 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1373 | u16 opcode = __le16_to_cpu(sent->opcode); | |
1374 | ||
1375 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
1376 | } else { | |
1377 | BT_ERR("%s command tx timeout", hdev->name); | |
1378 | } | |
1379 | ||
6bd32326 | 1380 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 1381 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1382 | } |
1383 | ||
2763eda6 | 1384 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1385 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1386 | { |
1387 | struct oob_data *data; | |
1388 | ||
1389 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1390 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1391 | return data; | |
1392 | ||
1393 | return NULL; | |
1394 | } | |
1395 | ||
1396 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1397 | { | |
1398 | struct oob_data *data; | |
1399 | ||
1400 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1401 | if (!data) | |
1402 | return -ENOENT; | |
1403 | ||
1404 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1405 | ||
1406 | list_del(&data->list); | |
1407 | kfree(data); | |
1408 | ||
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1413 | { | |
1414 | struct oob_data *data, *n; | |
1415 | ||
1416 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1417 | list_del(&data->list); | |
1418 | kfree(data); | |
1419 | } | |
1420 | ||
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1425 | u8 *randomizer) |
2763eda6 SJ |
1426 | { |
1427 | struct oob_data *data; | |
1428 | ||
1429 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1430 | ||
1431 | if (!data) { | |
1432 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1433 | if (!data) | |
1434 | return -ENOMEM; | |
1435 | ||
1436 | bacpy(&data->bdaddr, bdaddr); | |
1437 | list_add(&data->list, &hdev->remote_oob_data); | |
1438 | } | |
1439 | ||
1440 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1441 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1442 | ||
1443 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); | |
1444 | ||
1445 | return 0; | |
1446 | } | |
1447 | ||
04124681 | 1448 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1449 | { |
8035ded4 | 1450 | struct bdaddr_list *b; |
b2a66aad | 1451 | |
8035ded4 | 1452 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1453 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1454 | return b; | |
b2a66aad AJ |
1455 | |
1456 | return NULL; | |
1457 | } | |
1458 | ||
1459 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1460 | { | |
1461 | struct list_head *p, *n; | |
1462 | ||
1463 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1464 | struct bdaddr_list *b; | |
1465 | ||
1466 | b = list_entry(p, struct bdaddr_list, list); | |
1467 | ||
1468 | list_del(p); | |
1469 | kfree(b); | |
1470 | } | |
1471 | ||
1472 | return 0; | |
1473 | } | |
1474 | ||
88c1fe4b | 1475 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1476 | { |
1477 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1478 | |
1479 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1480 | return -EBADF; | |
1481 | ||
5e762444 AJ |
1482 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1483 | return -EEXIST; | |
b2a66aad AJ |
1484 | |
1485 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1486 | if (!entry) |
1487 | return -ENOMEM; | |
b2a66aad AJ |
1488 | |
1489 | bacpy(&entry->bdaddr, bdaddr); | |
1490 | ||
1491 | list_add(&entry->list, &hdev->blacklist); | |
1492 | ||
88c1fe4b | 1493 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1494 | } |
1495 | ||
88c1fe4b | 1496 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1497 | { |
1498 | struct bdaddr_list *entry; | |
b2a66aad | 1499 | |
1ec918ce | 1500 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1501 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1502 | |
1503 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1504 | if (!entry) |
5e762444 | 1505 | return -ENOENT; |
b2a66aad AJ |
1506 | |
1507 | list_del(&entry->list); | |
1508 | kfree(entry); | |
1509 | ||
88c1fe4b | 1510 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1511 | } |
1512 | ||
7ba8b4be AG |
1513 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
1514 | { | |
1515 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1516 | struct hci_cp_le_set_scan_param cp; | |
1517 | ||
1518 | memset(&cp, 0, sizeof(cp)); | |
1519 | cp.type = param->type; | |
1520 | cp.interval = cpu_to_le16(param->interval); | |
1521 | cp.window = cpu_to_le16(param->window); | |
1522 | ||
1523 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); | |
1524 | } | |
1525 | ||
1526 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) | |
1527 | { | |
1528 | struct hci_cp_le_set_scan_enable cp; | |
1529 | ||
1530 | memset(&cp, 0, sizeof(cp)); | |
1531 | cp.enable = 1; | |
0431a43c | 1532 | cp.filter_dup = 1; |
7ba8b4be AG |
1533 | |
1534 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1535 | } | |
1536 | ||
1537 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 1538 | u16 window, int timeout) |
7ba8b4be AG |
1539 | { |
1540 | long timeo = msecs_to_jiffies(3000); | |
1541 | struct le_scan_params param; | |
1542 | int err; | |
1543 | ||
1544 | BT_DBG("%s", hdev->name); | |
1545 | ||
1546 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1547 | return -EINPROGRESS; | |
1548 | ||
1549 | param.type = type; | |
1550 | param.interval = interval; | |
1551 | param.window = window; | |
1552 | ||
1553 | hci_req_lock(hdev); | |
1554 | ||
1555 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, | |
04124681 | 1556 | timeo); |
7ba8b4be AG |
1557 | if (!err) |
1558 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); | |
1559 | ||
1560 | hci_req_unlock(hdev); | |
1561 | ||
1562 | if (err < 0) | |
1563 | return err; | |
1564 | ||
1565 | schedule_delayed_work(&hdev->le_scan_disable, | |
04124681 | 1566 | msecs_to_jiffies(timeout)); |
7ba8b4be AG |
1567 | |
1568 | return 0; | |
1569 | } | |
1570 | ||
7dbfac1d AG |
1571 | int hci_cancel_le_scan(struct hci_dev *hdev) |
1572 | { | |
1573 | BT_DBG("%s", hdev->name); | |
1574 | ||
1575 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1576 | return -EALREADY; | |
1577 | ||
1578 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
1579 | struct hci_cp_le_set_scan_enable cp; | |
1580 | ||
1581 | /* Send HCI command to disable LE Scan */ | |
1582 | memset(&cp, 0, sizeof(cp)); | |
1583 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1584 | } | |
1585 | ||
1586 | return 0; | |
1587 | } | |
1588 | ||
7ba8b4be AG |
1589 | static void le_scan_disable_work(struct work_struct *work) |
1590 | { | |
1591 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 1592 | le_scan_disable.work); |
7ba8b4be AG |
1593 | struct hci_cp_le_set_scan_enable cp; |
1594 | ||
1595 | BT_DBG("%s", hdev->name); | |
1596 | ||
1597 | memset(&cp, 0, sizeof(cp)); | |
1598 | ||
1599 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1600 | } | |
1601 | ||
28b75a89 AG |
1602 | static void le_scan_work(struct work_struct *work) |
1603 | { | |
1604 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
1605 | struct le_scan_params *param = &hdev->le_scan_params; | |
1606 | ||
1607 | BT_DBG("%s", hdev->name); | |
1608 | ||
04124681 GP |
1609 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
1610 | param->timeout); | |
28b75a89 AG |
1611 | } |
1612 | ||
1613 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 1614 | int timeout) |
28b75a89 AG |
1615 | { |
1616 | struct le_scan_params *param = &hdev->le_scan_params; | |
1617 | ||
1618 | BT_DBG("%s", hdev->name); | |
1619 | ||
1620 | if (work_busy(&hdev->le_scan)) | |
1621 | return -EINPROGRESS; | |
1622 | ||
1623 | param->type = type; | |
1624 | param->interval = interval; | |
1625 | param->window = window; | |
1626 | param->timeout = timeout; | |
1627 | ||
1628 | queue_work(system_long_wq, &hdev->le_scan); | |
1629 | ||
1630 | return 0; | |
1631 | } | |
1632 | ||
9be0dab7 DH |
1633 | /* Alloc HCI device */ |
1634 | struct hci_dev *hci_alloc_dev(void) | |
1635 | { | |
1636 | struct hci_dev *hdev; | |
1637 | ||
1638 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
1639 | if (!hdev) | |
1640 | return NULL; | |
1641 | ||
b1b813d4 DH |
1642 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
1643 | hdev->esco_type = (ESCO_HV1); | |
1644 | hdev->link_mode = (HCI_LM_ACCEPT); | |
1645 | hdev->io_capability = 0x03; /* No Input No Output */ | |
1646 | ||
b1b813d4 DH |
1647 | hdev->sniff_max_interval = 800; |
1648 | hdev->sniff_min_interval = 80; | |
1649 | ||
1650 | mutex_init(&hdev->lock); | |
1651 | mutex_init(&hdev->req_lock); | |
1652 | ||
1653 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
1654 | INIT_LIST_HEAD(&hdev->blacklist); | |
1655 | INIT_LIST_HEAD(&hdev->uuids); | |
1656 | INIT_LIST_HEAD(&hdev->link_keys); | |
1657 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
1658 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 1659 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
1660 | |
1661 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
1662 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
1663 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
1664 | INIT_WORK(&hdev->power_on, hci_power_on); | |
1665 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
1666 | ||
b1b813d4 DH |
1667 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
1668 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
1669 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
1670 | ||
9be0dab7 | 1671 | skb_queue_head_init(&hdev->driver_init); |
b1b813d4 DH |
1672 | skb_queue_head_init(&hdev->rx_q); |
1673 | skb_queue_head_init(&hdev->cmd_q); | |
1674 | skb_queue_head_init(&hdev->raw_q); | |
1675 | ||
1676 | init_waitqueue_head(&hdev->req_wait_q); | |
1677 | ||
bda4f23a | 1678 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 1679 | |
b1b813d4 DH |
1680 | hci_init_sysfs(hdev); |
1681 | discovery_init(hdev); | |
9be0dab7 DH |
1682 | |
1683 | return hdev; | |
1684 | } | |
1685 | EXPORT_SYMBOL(hci_alloc_dev); | |
1686 | ||
1687 | /* Free HCI device */ | |
1688 | void hci_free_dev(struct hci_dev *hdev) | |
1689 | { | |
1690 | skb_queue_purge(&hdev->driver_init); | |
1691 | ||
1692 | /* will free via device release */ | |
1693 | put_device(&hdev->dev); | |
1694 | } | |
1695 | EXPORT_SYMBOL(hci_free_dev); | |
1696 | ||
1da177e4 LT |
1697 | /* Register HCI device */ |
1698 | int hci_register_dev(struct hci_dev *hdev) | |
1699 | { | |
b1b813d4 | 1700 | int id, error; |
1da177e4 | 1701 | |
010666a1 | 1702 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
1703 | return -EINVAL; |
1704 | ||
08add513 MM |
1705 | /* Do not allow HCI_AMP devices to register at index 0, |
1706 | * so the index can be used as the AMP controller ID. | |
1707 | */ | |
3df92b31 SL |
1708 | switch (hdev->dev_type) { |
1709 | case HCI_BREDR: | |
1710 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
1711 | break; | |
1712 | case HCI_AMP: | |
1713 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
1714 | break; | |
1715 | default: | |
1716 | return -EINVAL; | |
1da177e4 | 1717 | } |
8e87d142 | 1718 | |
3df92b31 SL |
1719 | if (id < 0) |
1720 | return id; | |
1721 | ||
1da177e4 LT |
1722 | sprintf(hdev->name, "hci%d", id); |
1723 | hdev->id = id; | |
2d8b3a11 AE |
1724 | |
1725 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
1726 | ||
3df92b31 SL |
1727 | write_lock(&hci_dev_list_lock); |
1728 | list_add(&hdev->list, &hci_dev_list); | |
f20d09d5 | 1729 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1730 | |
32845eb1 | 1731 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 1732 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
1733 | if (!hdev->workqueue) { |
1734 | error = -ENOMEM; | |
1735 | goto err; | |
1736 | } | |
f48fd9c8 | 1737 | |
33ca954d DH |
1738 | error = hci_add_sysfs(hdev); |
1739 | if (error < 0) | |
1740 | goto err_wqueue; | |
1da177e4 | 1741 | |
611b30f7 | 1742 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
1743 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
1744 | hdev); | |
611b30f7 MH |
1745 | if (hdev->rfkill) { |
1746 | if (rfkill_register(hdev->rfkill) < 0) { | |
1747 | rfkill_destroy(hdev->rfkill); | |
1748 | hdev->rfkill = NULL; | |
1749 | } | |
1750 | } | |
1751 | ||
a8b2d5c2 | 1752 | set_bit(HCI_SETUP, &hdev->dev_flags); |
ce2be9ac AE |
1753 | |
1754 | if (hdev->dev_type != HCI_AMP) | |
1755 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); | |
1756 | ||
7f971041 | 1757 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1758 | |
1da177e4 | 1759 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 1760 | hci_dev_hold(hdev); |
1da177e4 LT |
1761 | |
1762 | return id; | |
f48fd9c8 | 1763 | |
33ca954d DH |
1764 | err_wqueue: |
1765 | destroy_workqueue(hdev->workqueue); | |
1766 | err: | |
3df92b31 | 1767 | ida_simple_remove(&hci_index_ida, hdev->id); |
f20d09d5 | 1768 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1769 | list_del(&hdev->list); |
f20d09d5 | 1770 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1771 | |
33ca954d | 1772 | return error; |
1da177e4 LT |
1773 | } |
1774 | EXPORT_SYMBOL(hci_register_dev); | |
1775 | ||
1776 | /* Unregister HCI device */ | |
59735631 | 1777 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1778 | { |
3df92b31 | 1779 | int i, id; |
ef222013 | 1780 | |
c13854ce | 1781 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1782 | |
94324962 JH |
1783 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
1784 | ||
3df92b31 SL |
1785 | id = hdev->id; |
1786 | ||
f20d09d5 | 1787 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1788 | list_del(&hdev->list); |
f20d09d5 | 1789 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1790 | |
1791 | hci_dev_do_close(hdev); | |
1792 | ||
cd4c5391 | 1793 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1794 | kfree_skb(hdev->reassembly[i]); |
1795 | ||
ab81cbf9 | 1796 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 1797 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 1798 | hci_dev_lock(hdev); |
744cf19e | 1799 | mgmt_index_removed(hdev); |
09fd0de5 | 1800 | hci_dev_unlock(hdev); |
56e5cb86 | 1801 | } |
ab81cbf9 | 1802 | |
2e58ef3e JH |
1803 | /* mgmt_index_removed should take care of emptying the |
1804 | * pending list */ | |
1805 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1806 | ||
1da177e4 LT |
1807 | hci_notify(hdev, HCI_DEV_UNREG); |
1808 | ||
611b30f7 MH |
1809 | if (hdev->rfkill) { |
1810 | rfkill_unregister(hdev->rfkill); | |
1811 | rfkill_destroy(hdev->rfkill); | |
1812 | } | |
1813 | ||
ce242970 | 1814 | hci_del_sysfs(hdev); |
147e2d59 | 1815 | |
f48fd9c8 MH |
1816 | destroy_workqueue(hdev->workqueue); |
1817 | ||
09fd0de5 | 1818 | hci_dev_lock(hdev); |
e2e0cacb | 1819 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1820 | hci_uuids_clear(hdev); |
55ed8ca1 | 1821 | hci_link_keys_clear(hdev); |
b899efaf | 1822 | hci_smp_ltks_clear(hdev); |
2763eda6 | 1823 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 1824 | hci_dev_unlock(hdev); |
e2e0cacb | 1825 | |
dc946bd8 | 1826 | hci_dev_put(hdev); |
3df92b31 SL |
1827 | |
1828 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
1829 | } |
1830 | EXPORT_SYMBOL(hci_unregister_dev); | |
1831 | ||
1832 | /* Suspend HCI device */ | |
1833 | int hci_suspend_dev(struct hci_dev *hdev) | |
1834 | { | |
1835 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1836 | return 0; | |
1837 | } | |
1838 | EXPORT_SYMBOL(hci_suspend_dev); | |
1839 | ||
1840 | /* Resume HCI device */ | |
1841 | int hci_resume_dev(struct hci_dev *hdev) | |
1842 | { | |
1843 | hci_notify(hdev, HCI_DEV_RESUME); | |
1844 | return 0; | |
1845 | } | |
1846 | EXPORT_SYMBOL(hci_resume_dev); | |
1847 | ||
76bca880 MH |
1848 | /* Receive frame from HCI drivers */ |
1849 | int hci_recv_frame(struct sk_buff *skb) | |
1850 | { | |
1851 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1852 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 1853 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
1854 | kfree_skb(skb); |
1855 | return -ENXIO; | |
1856 | } | |
1857 | ||
1858 | /* Incomming skb */ | |
1859 | bt_cb(skb)->incoming = 1; | |
1860 | ||
1861 | /* Time stamp */ | |
1862 | __net_timestamp(skb); | |
1863 | ||
76bca880 | 1864 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1865 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1866 | |
76bca880 MH |
1867 | return 0; |
1868 | } | |
1869 | EXPORT_SYMBOL(hci_recv_frame); | |
1870 | ||
33e882a5 | 1871 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 1872 | int count, __u8 index) |
33e882a5 SS |
1873 | { |
1874 | int len = 0; | |
1875 | int hlen = 0; | |
1876 | int remain = count; | |
1877 | struct sk_buff *skb; | |
1878 | struct bt_skb_cb *scb; | |
1879 | ||
1880 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 1881 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
1882 | return -EILSEQ; |
1883 | ||
1884 | skb = hdev->reassembly[index]; | |
1885 | ||
1886 | if (!skb) { | |
1887 | switch (type) { | |
1888 | case HCI_ACLDATA_PKT: | |
1889 | len = HCI_MAX_FRAME_SIZE; | |
1890 | hlen = HCI_ACL_HDR_SIZE; | |
1891 | break; | |
1892 | case HCI_EVENT_PKT: | |
1893 | len = HCI_MAX_EVENT_SIZE; | |
1894 | hlen = HCI_EVENT_HDR_SIZE; | |
1895 | break; | |
1896 | case HCI_SCODATA_PKT: | |
1897 | len = HCI_MAX_SCO_SIZE; | |
1898 | hlen = HCI_SCO_HDR_SIZE; | |
1899 | break; | |
1900 | } | |
1901 | ||
1e429f38 | 1902 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1903 | if (!skb) |
1904 | return -ENOMEM; | |
1905 | ||
1906 | scb = (void *) skb->cb; | |
1907 | scb->expect = hlen; | |
1908 | scb->pkt_type = type; | |
1909 | ||
1910 | skb->dev = (void *) hdev; | |
1911 | hdev->reassembly[index] = skb; | |
1912 | } | |
1913 | ||
1914 | while (count) { | |
1915 | scb = (void *) skb->cb; | |
89bb46d0 | 1916 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
1917 | |
1918 | memcpy(skb_put(skb, len), data, len); | |
1919 | ||
1920 | count -= len; | |
1921 | data += len; | |
1922 | scb->expect -= len; | |
1923 | remain = count; | |
1924 | ||
1925 | switch (type) { | |
1926 | case HCI_EVENT_PKT: | |
1927 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1928 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1929 | scb->expect = h->plen; | |
1930 | ||
1931 | if (skb_tailroom(skb) < scb->expect) { | |
1932 | kfree_skb(skb); | |
1933 | hdev->reassembly[index] = NULL; | |
1934 | return -ENOMEM; | |
1935 | } | |
1936 | } | |
1937 | break; | |
1938 | ||
1939 | case HCI_ACLDATA_PKT: | |
1940 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1941 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1942 | scb->expect = __le16_to_cpu(h->dlen); | |
1943 | ||
1944 | if (skb_tailroom(skb) < scb->expect) { | |
1945 | kfree_skb(skb); | |
1946 | hdev->reassembly[index] = NULL; | |
1947 | return -ENOMEM; | |
1948 | } | |
1949 | } | |
1950 | break; | |
1951 | ||
1952 | case HCI_SCODATA_PKT: | |
1953 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1954 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1955 | scb->expect = h->dlen; | |
1956 | ||
1957 | if (skb_tailroom(skb) < scb->expect) { | |
1958 | kfree_skb(skb); | |
1959 | hdev->reassembly[index] = NULL; | |
1960 | return -ENOMEM; | |
1961 | } | |
1962 | } | |
1963 | break; | |
1964 | } | |
1965 | ||
1966 | if (scb->expect == 0) { | |
1967 | /* Complete frame */ | |
1968 | ||
1969 | bt_cb(skb)->pkt_type = type; | |
1970 | hci_recv_frame(skb); | |
1971 | ||
1972 | hdev->reassembly[index] = NULL; | |
1973 | return remain; | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | return remain; | |
1978 | } | |
1979 | ||
ef222013 MH |
1980 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1981 | { | |
f39a3c06 SS |
1982 | int rem = 0; |
1983 | ||
ef222013 MH |
1984 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1985 | return -EILSEQ; | |
1986 | ||
da5f6c37 | 1987 | while (count) { |
1e429f38 | 1988 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
1989 | if (rem < 0) |
1990 | return rem; | |
ef222013 | 1991 | |
f39a3c06 SS |
1992 | data += (count - rem); |
1993 | count = rem; | |
f81c6224 | 1994 | } |
ef222013 | 1995 | |
f39a3c06 | 1996 | return rem; |
ef222013 MH |
1997 | } |
1998 | EXPORT_SYMBOL(hci_recv_fragment); | |
1999 | ||
99811510 SS |
2000 | #define STREAM_REASSEMBLY 0 |
2001 | ||
2002 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2003 | { | |
2004 | int type; | |
2005 | int rem = 0; | |
2006 | ||
da5f6c37 | 2007 | while (count) { |
99811510 SS |
2008 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2009 | ||
2010 | if (!skb) { | |
2011 | struct { char type; } *pkt; | |
2012 | ||
2013 | /* Start of the frame */ | |
2014 | pkt = data; | |
2015 | type = pkt->type; | |
2016 | ||
2017 | data++; | |
2018 | count--; | |
2019 | } else | |
2020 | type = bt_cb(skb)->pkt_type; | |
2021 | ||
1e429f38 | 2022 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2023 | STREAM_REASSEMBLY); |
99811510 SS |
2024 | if (rem < 0) |
2025 | return rem; | |
2026 | ||
2027 | data += (count - rem); | |
2028 | count = rem; | |
f81c6224 | 2029 | } |
99811510 SS |
2030 | |
2031 | return rem; | |
2032 | } | |
2033 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2034 | ||
1da177e4 LT |
2035 | /* ---- Interface to upper protocols ---- */ |
2036 | ||
1da177e4 LT |
2037 | int hci_register_cb(struct hci_cb *cb) |
2038 | { | |
2039 | BT_DBG("%p name %s", cb, cb->name); | |
2040 | ||
f20d09d5 | 2041 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2042 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2043 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2044 | |
2045 | return 0; | |
2046 | } | |
2047 | EXPORT_SYMBOL(hci_register_cb); | |
2048 | ||
2049 | int hci_unregister_cb(struct hci_cb *cb) | |
2050 | { | |
2051 | BT_DBG("%p name %s", cb, cb->name); | |
2052 | ||
f20d09d5 | 2053 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2054 | list_del(&cb->list); |
f20d09d5 | 2055 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2056 | |
2057 | return 0; | |
2058 | } | |
2059 | EXPORT_SYMBOL(hci_unregister_cb); | |
2060 | ||
2061 | static int hci_send_frame(struct sk_buff *skb) | |
2062 | { | |
2063 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2064 | ||
2065 | if (!hdev) { | |
2066 | kfree_skb(skb); | |
2067 | return -ENODEV; | |
2068 | } | |
2069 | ||
0d48d939 | 2070 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2071 | |
cd82e61c MH |
2072 | /* Time stamp */ |
2073 | __net_timestamp(skb); | |
1da177e4 | 2074 | |
cd82e61c MH |
2075 | /* Send copy to monitor */ |
2076 | hci_send_to_monitor(hdev, skb); | |
2077 | ||
2078 | if (atomic_read(&hdev->promisc)) { | |
2079 | /* Send copy to the sockets */ | |
470fe1b5 | 2080 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2081 | } |
2082 | ||
2083 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2084 | skb_orphan(skb); | |
2085 | ||
2086 | return hdev->send(skb); | |
2087 | } | |
2088 | ||
2089 | /* Send HCI command */ | |
a9de9248 | 2090 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
2091 | { |
2092 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2093 | struct hci_command_hdr *hdr; | |
2094 | struct sk_buff *skb; | |
2095 | ||
f0e09510 | 2096 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
2097 | |
2098 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
2099 | if (!skb) { | |
ef222013 | 2100 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
2101 | return -ENOMEM; |
2102 | } | |
2103 | ||
2104 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2105 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2106 | hdr->plen = plen; |
2107 | ||
2108 | if (plen) | |
2109 | memcpy(skb_put(skb, plen), param, plen); | |
2110 | ||
2111 | BT_DBG("skb len %d", skb->len); | |
2112 | ||
0d48d939 | 2113 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2114 | skb->dev = (void *) hdev; |
c78ae283 | 2115 | |
a5040efa JH |
2116 | if (test_bit(HCI_INIT, &hdev->flags)) |
2117 | hdev->init_last_cmd = opcode; | |
2118 | ||
1da177e4 | 2119 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2120 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2121 | |
2122 | return 0; | |
2123 | } | |
1da177e4 LT |
2124 | |
2125 | /* Get data from the previously sent command */ | |
a9de9248 | 2126 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2127 | { |
2128 | struct hci_command_hdr *hdr; | |
2129 | ||
2130 | if (!hdev->sent_cmd) | |
2131 | return NULL; | |
2132 | ||
2133 | hdr = (void *) hdev->sent_cmd->data; | |
2134 | ||
a9de9248 | 2135 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2136 | return NULL; |
2137 | ||
f0e09510 | 2138 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2139 | |
2140 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2141 | } | |
2142 | ||
2143 | /* Send ACL data */ | |
2144 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2145 | { | |
2146 | struct hci_acl_hdr *hdr; | |
2147 | int len = skb->len; | |
2148 | ||
badff6d0 ACM |
2149 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2150 | skb_reset_transport_header(skb); | |
9c70220b | 2151 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2152 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2153 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2154 | } |
2155 | ||
73d80deb | 2156 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
a8c5fb1a | 2157 | struct sk_buff *skb, __u16 flags) |
1da177e4 LT |
2158 | { |
2159 | struct hci_dev *hdev = conn->hdev; | |
2160 | struct sk_buff *list; | |
2161 | ||
087bfd99 GP |
2162 | skb->len = skb_headlen(skb); |
2163 | skb->data_len = 0; | |
2164 | ||
2165 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
2166 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2167 | ||
70f23020 AE |
2168 | list = skb_shinfo(skb)->frag_list; |
2169 | if (!list) { | |
1da177e4 LT |
2170 | /* Non fragmented */ |
2171 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2172 | ||
73d80deb | 2173 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2174 | } else { |
2175 | /* Fragmented */ | |
2176 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2177 | ||
2178 | skb_shinfo(skb)->frag_list = NULL; | |
2179 | ||
2180 | /* Queue all fragments atomically */ | |
af3e6359 | 2181 | spin_lock(&queue->lock); |
1da177e4 | 2182 | |
73d80deb | 2183 | __skb_queue_tail(queue, skb); |
e702112f AE |
2184 | |
2185 | flags &= ~ACL_START; | |
2186 | flags |= ACL_CONT; | |
1da177e4 LT |
2187 | do { |
2188 | skb = list; list = list->next; | |
8e87d142 | 2189 | |
1da177e4 | 2190 | skb->dev = (void *) hdev; |
0d48d939 | 2191 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2192 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2193 | |
2194 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2195 | ||
73d80deb | 2196 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2197 | } while (list); |
2198 | ||
af3e6359 | 2199 | spin_unlock(&queue->lock); |
1da177e4 | 2200 | } |
73d80deb LAD |
2201 | } |
2202 | ||
2203 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2204 | { | |
2205 | struct hci_conn *conn = chan->conn; | |
2206 | struct hci_dev *hdev = conn->hdev; | |
2207 | ||
f0e09510 | 2208 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb LAD |
2209 | |
2210 | skb->dev = (void *) hdev; | |
73d80deb LAD |
2211 | |
2212 | hci_queue_acl(conn, &chan->data_q, skb, flags); | |
1da177e4 | 2213 | |
3eff45ea | 2214 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2215 | } |
1da177e4 LT |
2216 | |
2217 | /* Send SCO data */ | |
0d861d8b | 2218 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2219 | { |
2220 | struct hci_dev *hdev = conn->hdev; | |
2221 | struct hci_sco_hdr hdr; | |
2222 | ||
2223 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2224 | ||
aca3192c | 2225 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2226 | hdr.dlen = skb->len; |
2227 | ||
badff6d0 ACM |
2228 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2229 | skb_reset_transport_header(skb); | |
9c70220b | 2230 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2231 | |
2232 | skb->dev = (void *) hdev; | |
0d48d939 | 2233 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2234 | |
1da177e4 | 2235 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2236 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 2237 | } |
1da177e4 LT |
2238 | |
2239 | /* ---- HCI TX task (outgoing data) ---- */ | |
2240 | ||
2241 | /* HCI Connection scheduler */ | |
6039aa73 GP |
2242 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2243 | int *quote) | |
1da177e4 LT |
2244 | { |
2245 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2246 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2247 | unsigned int num = 0, min = ~0; |
1da177e4 | 2248 | |
8e87d142 | 2249 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2250 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2251 | |
2252 | rcu_read_lock(); | |
2253 | ||
2254 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2255 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2256 | continue; |
769be974 MH |
2257 | |
2258 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2259 | continue; | |
2260 | ||
1da177e4 LT |
2261 | num++; |
2262 | ||
2263 | if (c->sent < min) { | |
2264 | min = c->sent; | |
2265 | conn = c; | |
2266 | } | |
52087a79 LAD |
2267 | |
2268 | if (hci_conn_num(hdev, type) == num) | |
2269 | break; | |
1da177e4 LT |
2270 | } |
2271 | ||
bf4c6325 GP |
2272 | rcu_read_unlock(); |
2273 | ||
1da177e4 | 2274 | if (conn) { |
6ed58ec5 VT |
2275 | int cnt, q; |
2276 | ||
2277 | switch (conn->type) { | |
2278 | case ACL_LINK: | |
2279 | cnt = hdev->acl_cnt; | |
2280 | break; | |
2281 | case SCO_LINK: | |
2282 | case ESCO_LINK: | |
2283 | cnt = hdev->sco_cnt; | |
2284 | break; | |
2285 | case LE_LINK: | |
2286 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2287 | break; | |
2288 | default: | |
2289 | cnt = 0; | |
2290 | BT_ERR("Unknown link type"); | |
2291 | } | |
2292 | ||
2293 | q = cnt / num; | |
1da177e4 LT |
2294 | *quote = q ? q : 1; |
2295 | } else | |
2296 | *quote = 0; | |
2297 | ||
2298 | BT_DBG("conn %p quote %d", conn, *quote); | |
2299 | return conn; | |
2300 | } | |
2301 | ||
6039aa73 | 2302 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2303 | { |
2304 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2305 | struct hci_conn *c; |
1da177e4 | 2306 | |
bae1f5d9 | 2307 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2308 | |
bf4c6325 GP |
2309 | rcu_read_lock(); |
2310 | ||
1da177e4 | 2311 | /* Kill stalled connections */ |
bf4c6325 | 2312 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 VT |
2313 | if (c->type == type && c->sent) { |
2314 | BT_ERR("%s killing stalled connection %s", | |
a8c5fb1a | 2315 | hdev->name, batostr(&c->dst)); |
7490c6c2 | 2316 | hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
2317 | } |
2318 | } | |
bf4c6325 GP |
2319 | |
2320 | rcu_read_unlock(); | |
1da177e4 LT |
2321 | } |
2322 | ||
6039aa73 GP |
2323 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
2324 | int *quote) | |
1da177e4 | 2325 | { |
73d80deb LAD |
2326 | struct hci_conn_hash *h = &hdev->conn_hash; |
2327 | struct hci_chan *chan = NULL; | |
abc5de8f | 2328 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2329 | struct hci_conn *conn; |
73d80deb LAD |
2330 | int cnt, q, conn_num = 0; |
2331 | ||
2332 | BT_DBG("%s", hdev->name); | |
2333 | ||
bf4c6325 GP |
2334 | rcu_read_lock(); |
2335 | ||
2336 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2337 | struct hci_chan *tmp; |
2338 | ||
2339 | if (conn->type != type) | |
2340 | continue; | |
2341 | ||
2342 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2343 | continue; | |
2344 | ||
2345 | conn_num++; | |
2346 | ||
8192edef | 2347 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2348 | struct sk_buff *skb; |
2349 | ||
2350 | if (skb_queue_empty(&tmp->data_q)) | |
2351 | continue; | |
2352 | ||
2353 | skb = skb_peek(&tmp->data_q); | |
2354 | if (skb->priority < cur_prio) | |
2355 | continue; | |
2356 | ||
2357 | if (skb->priority > cur_prio) { | |
2358 | num = 0; | |
2359 | min = ~0; | |
2360 | cur_prio = skb->priority; | |
2361 | } | |
2362 | ||
2363 | num++; | |
2364 | ||
2365 | if (conn->sent < min) { | |
2366 | min = conn->sent; | |
2367 | chan = tmp; | |
2368 | } | |
2369 | } | |
2370 | ||
2371 | if (hci_conn_num(hdev, type) == conn_num) | |
2372 | break; | |
2373 | } | |
2374 | ||
bf4c6325 GP |
2375 | rcu_read_unlock(); |
2376 | ||
73d80deb LAD |
2377 | if (!chan) |
2378 | return NULL; | |
2379 | ||
2380 | switch (chan->conn->type) { | |
2381 | case ACL_LINK: | |
2382 | cnt = hdev->acl_cnt; | |
2383 | break; | |
2384 | case SCO_LINK: | |
2385 | case ESCO_LINK: | |
2386 | cnt = hdev->sco_cnt; | |
2387 | break; | |
2388 | case LE_LINK: | |
2389 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2390 | break; | |
2391 | default: | |
2392 | cnt = 0; | |
2393 | BT_ERR("Unknown link type"); | |
2394 | } | |
2395 | ||
2396 | q = cnt / num; | |
2397 | *quote = q ? q : 1; | |
2398 | BT_DBG("chan %p quote %d", chan, *quote); | |
2399 | return chan; | |
2400 | } | |
2401 | ||
02b20f0b LAD |
2402 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2403 | { | |
2404 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2405 | struct hci_conn *conn; | |
2406 | int num = 0; | |
2407 | ||
2408 | BT_DBG("%s", hdev->name); | |
2409 | ||
bf4c6325 GP |
2410 | rcu_read_lock(); |
2411 | ||
2412 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2413 | struct hci_chan *chan; |
2414 | ||
2415 | if (conn->type != type) | |
2416 | continue; | |
2417 | ||
2418 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2419 | continue; | |
2420 | ||
2421 | num++; | |
2422 | ||
8192edef | 2423 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2424 | struct sk_buff *skb; |
2425 | ||
2426 | if (chan->sent) { | |
2427 | chan->sent = 0; | |
2428 | continue; | |
2429 | } | |
2430 | ||
2431 | if (skb_queue_empty(&chan->data_q)) | |
2432 | continue; | |
2433 | ||
2434 | skb = skb_peek(&chan->data_q); | |
2435 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2436 | continue; | |
2437 | ||
2438 | skb->priority = HCI_PRIO_MAX - 1; | |
2439 | ||
2440 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 2441 | skb->priority); |
02b20f0b LAD |
2442 | } |
2443 | ||
2444 | if (hci_conn_num(hdev, type) == num) | |
2445 | break; | |
2446 | } | |
bf4c6325 GP |
2447 | |
2448 | rcu_read_unlock(); | |
2449 | ||
02b20f0b LAD |
2450 | } |
2451 | ||
b71d385a AE |
2452 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
2453 | { | |
2454 | /* Calculate count of blocks used by this packet */ | |
2455 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
2456 | } | |
2457 | ||
6039aa73 | 2458 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 2459 | { |
1da177e4 LT |
2460 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2461 | /* ACL tx timeout must be longer than maximum | |
2462 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 2463 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 2464 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 2465 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 2466 | } |
63d2bc1b | 2467 | } |
1da177e4 | 2468 | |
6039aa73 | 2469 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
2470 | { |
2471 | unsigned int cnt = hdev->acl_cnt; | |
2472 | struct hci_chan *chan; | |
2473 | struct sk_buff *skb; | |
2474 | int quote; | |
2475 | ||
2476 | __check_timeout(hdev, cnt); | |
04837f64 | 2477 | |
73d80deb | 2478 | while (hdev->acl_cnt && |
a8c5fb1a | 2479 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
2480 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2481 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2482 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2483 | skb->len, skb->priority); |
73d80deb | 2484 | |
ec1cce24 LAD |
2485 | /* Stop if priority has changed */ |
2486 | if (skb->priority < priority) | |
2487 | break; | |
2488 | ||
2489 | skb = skb_dequeue(&chan->data_q); | |
2490 | ||
73d80deb | 2491 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 2492 | bt_cb(skb)->force_active); |
04837f64 | 2493 | |
1da177e4 LT |
2494 | hci_send_frame(skb); |
2495 | hdev->acl_last_tx = jiffies; | |
2496 | ||
2497 | hdev->acl_cnt--; | |
73d80deb LAD |
2498 | chan->sent++; |
2499 | chan->conn->sent++; | |
1da177e4 LT |
2500 | } |
2501 | } | |
02b20f0b LAD |
2502 | |
2503 | if (cnt != hdev->acl_cnt) | |
2504 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2505 | } |
2506 | ||
6039aa73 | 2507 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 2508 | { |
63d2bc1b | 2509 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
2510 | struct hci_chan *chan; |
2511 | struct sk_buff *skb; | |
2512 | int quote; | |
b71d385a | 2513 | |
63d2bc1b | 2514 | __check_timeout(hdev, cnt); |
b71d385a AE |
2515 | |
2516 | while (hdev->block_cnt > 0 && | |
a8c5fb1a | 2517 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
b71d385a AE |
2518 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2519 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
2520 | int blocks; | |
2521 | ||
2522 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 2523 | skb->len, skb->priority); |
b71d385a AE |
2524 | |
2525 | /* Stop if priority has changed */ | |
2526 | if (skb->priority < priority) | |
2527 | break; | |
2528 | ||
2529 | skb = skb_dequeue(&chan->data_q); | |
2530 | ||
2531 | blocks = __get_blocks(hdev, skb); | |
2532 | if (blocks > hdev->block_cnt) | |
2533 | return; | |
2534 | ||
2535 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 2536 | bt_cb(skb)->force_active); |
b71d385a AE |
2537 | |
2538 | hci_send_frame(skb); | |
2539 | hdev->acl_last_tx = jiffies; | |
2540 | ||
2541 | hdev->block_cnt -= blocks; | |
2542 | quote -= blocks; | |
2543 | ||
2544 | chan->sent += blocks; | |
2545 | chan->conn->sent += blocks; | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | if (cnt != hdev->block_cnt) | |
2550 | hci_prio_recalculate(hdev, ACL_LINK); | |
2551 | } | |
2552 | ||
6039aa73 | 2553 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
2554 | { |
2555 | BT_DBG("%s", hdev->name); | |
2556 | ||
2557 | if (!hci_conn_num(hdev, ACL_LINK)) | |
2558 | return; | |
2559 | ||
2560 | switch (hdev->flow_ctl_mode) { | |
2561 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
2562 | hci_sched_acl_pkt(hdev); | |
2563 | break; | |
2564 | ||
2565 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
2566 | hci_sched_acl_blk(hdev); | |
2567 | break; | |
2568 | } | |
2569 | } | |
2570 | ||
1da177e4 | 2571 | /* Schedule SCO */ |
6039aa73 | 2572 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
2573 | { |
2574 | struct hci_conn *conn; | |
2575 | struct sk_buff *skb; | |
2576 | int quote; | |
2577 | ||
2578 | BT_DBG("%s", hdev->name); | |
2579 | ||
52087a79 LAD |
2580 | if (!hci_conn_num(hdev, SCO_LINK)) |
2581 | return; | |
2582 | ||
1da177e4 LT |
2583 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2584 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2585 | BT_DBG("skb %p len %d", skb, skb->len); | |
2586 | hci_send_frame(skb); | |
2587 | ||
2588 | conn->sent++; | |
2589 | if (conn->sent == ~0) | |
2590 | conn->sent = 0; | |
2591 | } | |
2592 | } | |
2593 | } | |
2594 | ||
6039aa73 | 2595 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
2596 | { |
2597 | struct hci_conn *conn; | |
2598 | struct sk_buff *skb; | |
2599 | int quote; | |
2600 | ||
2601 | BT_DBG("%s", hdev->name); | |
2602 | ||
52087a79 LAD |
2603 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2604 | return; | |
2605 | ||
8fc9ced3 GP |
2606 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
2607 | "e))) { | |
b6a0dc82 MH |
2608 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
2609 | BT_DBG("skb %p len %d", skb, skb->len); | |
2610 | hci_send_frame(skb); | |
2611 | ||
2612 | conn->sent++; | |
2613 | if (conn->sent == ~0) | |
2614 | conn->sent = 0; | |
2615 | } | |
2616 | } | |
2617 | } | |
2618 | ||
6039aa73 | 2619 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 2620 | { |
73d80deb | 2621 | struct hci_chan *chan; |
6ed58ec5 | 2622 | struct sk_buff *skb; |
02b20f0b | 2623 | int quote, cnt, tmp; |
6ed58ec5 VT |
2624 | |
2625 | BT_DBG("%s", hdev->name); | |
2626 | ||
52087a79 LAD |
2627 | if (!hci_conn_num(hdev, LE_LINK)) |
2628 | return; | |
2629 | ||
6ed58ec5 VT |
2630 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2631 | /* LE tx timeout must be longer than maximum | |
2632 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2633 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 2634 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2635 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2636 | } |
2637 | ||
2638 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2639 | tmp = cnt; |
73d80deb | 2640 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2641 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2642 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2643 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2644 | skb->len, skb->priority); |
6ed58ec5 | 2645 | |
ec1cce24 LAD |
2646 | /* Stop if priority has changed */ |
2647 | if (skb->priority < priority) | |
2648 | break; | |
2649 | ||
2650 | skb = skb_dequeue(&chan->data_q); | |
2651 | ||
6ed58ec5 VT |
2652 | hci_send_frame(skb); |
2653 | hdev->le_last_tx = jiffies; | |
2654 | ||
2655 | cnt--; | |
73d80deb LAD |
2656 | chan->sent++; |
2657 | chan->conn->sent++; | |
6ed58ec5 VT |
2658 | } |
2659 | } | |
73d80deb | 2660 | |
6ed58ec5 VT |
2661 | if (hdev->le_pkts) |
2662 | hdev->le_cnt = cnt; | |
2663 | else | |
2664 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2665 | |
2666 | if (cnt != tmp) | |
2667 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2668 | } |
2669 | ||
3eff45ea | 2670 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2671 | { |
3eff45ea | 2672 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2673 | struct sk_buff *skb; |
2674 | ||
6ed58ec5 | 2675 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 2676 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
2677 | |
2678 | /* Schedule queues and send stuff to HCI driver */ | |
2679 | ||
2680 | hci_sched_acl(hdev); | |
2681 | ||
2682 | hci_sched_sco(hdev); | |
2683 | ||
b6a0dc82 MH |
2684 | hci_sched_esco(hdev); |
2685 | ||
6ed58ec5 VT |
2686 | hci_sched_le(hdev); |
2687 | ||
1da177e4 LT |
2688 | /* Send next queued raw (unknown type) packet */ |
2689 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2690 | hci_send_frame(skb); | |
1da177e4 LT |
2691 | } |
2692 | ||
25985edc | 2693 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2694 | |
2695 | /* ACL data packet */ | |
6039aa73 | 2696 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2697 | { |
2698 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2699 | struct hci_conn *conn; | |
2700 | __u16 handle, flags; | |
2701 | ||
2702 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2703 | ||
2704 | handle = __le16_to_cpu(hdr->handle); | |
2705 | flags = hci_flags(handle); | |
2706 | handle = hci_handle(handle); | |
2707 | ||
f0e09510 | 2708 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 2709 | handle, flags); |
1da177e4 LT |
2710 | |
2711 | hdev->stat.acl_rx++; | |
2712 | ||
2713 | hci_dev_lock(hdev); | |
2714 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2715 | hci_dev_unlock(hdev); | |
8e87d142 | 2716 | |
1da177e4 | 2717 | if (conn) { |
65983fc7 | 2718 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2719 | |
671267bf JH |
2720 | hci_dev_lock(hdev); |
2721 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && | |
2722 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) | |
2723 | mgmt_device_connected(hdev, &conn->dst, conn->type, | |
2724 | conn->dst_type, 0, NULL, 0, | |
2725 | conn->dev_class); | |
2726 | hci_dev_unlock(hdev); | |
2727 | ||
1da177e4 | 2728 | /* Send to upper protocol */ |
686ebf28 UF |
2729 | l2cap_recv_acldata(conn, skb, flags); |
2730 | return; | |
1da177e4 | 2731 | } else { |
8e87d142 | 2732 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 2733 | hdev->name, handle); |
1da177e4 LT |
2734 | } |
2735 | ||
2736 | kfree_skb(skb); | |
2737 | } | |
2738 | ||
2739 | /* SCO data packet */ | |
6039aa73 | 2740 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
2741 | { |
2742 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2743 | struct hci_conn *conn; | |
2744 | __u16 handle; | |
2745 | ||
2746 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2747 | ||
2748 | handle = __le16_to_cpu(hdr->handle); | |
2749 | ||
f0e09510 | 2750 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
2751 | |
2752 | hdev->stat.sco_rx++; | |
2753 | ||
2754 | hci_dev_lock(hdev); | |
2755 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2756 | hci_dev_unlock(hdev); | |
2757 | ||
2758 | if (conn) { | |
1da177e4 | 2759 | /* Send to upper protocol */ |
686ebf28 UF |
2760 | sco_recv_scodata(conn, skb); |
2761 | return; | |
1da177e4 | 2762 | } else { |
8e87d142 | 2763 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 2764 | hdev->name, handle); |
1da177e4 LT |
2765 | } |
2766 | ||
2767 | kfree_skb(skb); | |
2768 | } | |
2769 | ||
b78752cc | 2770 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2771 | { |
b78752cc | 2772 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2773 | struct sk_buff *skb; |
2774 | ||
2775 | BT_DBG("%s", hdev->name); | |
2776 | ||
1da177e4 | 2777 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
2778 | /* Send copy to monitor */ |
2779 | hci_send_to_monitor(hdev, skb); | |
2780 | ||
1da177e4 LT |
2781 | if (atomic_read(&hdev->promisc)) { |
2782 | /* Send copy to the sockets */ | |
470fe1b5 | 2783 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2784 | } |
2785 | ||
2786 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2787 | kfree_skb(skb); | |
2788 | continue; | |
2789 | } | |
2790 | ||
2791 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2792 | /* Don't process data packets in this states. */ | |
0d48d939 | 2793 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2794 | case HCI_ACLDATA_PKT: |
2795 | case HCI_SCODATA_PKT: | |
2796 | kfree_skb(skb); | |
2797 | continue; | |
3ff50b79 | 2798 | } |
1da177e4 LT |
2799 | } |
2800 | ||
2801 | /* Process frame */ | |
0d48d939 | 2802 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2803 | case HCI_EVENT_PKT: |
b78752cc | 2804 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2805 | hci_event_packet(hdev, skb); |
2806 | break; | |
2807 | ||
2808 | case HCI_ACLDATA_PKT: | |
2809 | BT_DBG("%s ACL data packet", hdev->name); | |
2810 | hci_acldata_packet(hdev, skb); | |
2811 | break; | |
2812 | ||
2813 | case HCI_SCODATA_PKT: | |
2814 | BT_DBG("%s SCO data packet", hdev->name); | |
2815 | hci_scodata_packet(hdev, skb); | |
2816 | break; | |
2817 | ||
2818 | default: | |
2819 | kfree_skb(skb); | |
2820 | break; | |
2821 | } | |
2822 | } | |
1da177e4 LT |
2823 | } |
2824 | ||
c347b765 | 2825 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2826 | { |
c347b765 | 2827 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2828 | struct sk_buff *skb; |
2829 | ||
2104786b AE |
2830 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
2831 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 2832 | |
1da177e4 | 2833 | /* Send queued commands */ |
5a08ecce AE |
2834 | if (atomic_read(&hdev->cmd_cnt)) { |
2835 | skb = skb_dequeue(&hdev->cmd_q); | |
2836 | if (!skb) | |
2837 | return; | |
2838 | ||
7585b97a | 2839 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2840 | |
70f23020 AE |
2841 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2842 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2843 | atomic_dec(&hdev->cmd_cnt); |
2844 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2845 | if (test_bit(HCI_RESET, &hdev->flags)) |
2846 | del_timer(&hdev->cmd_timer); | |
2847 | else | |
2848 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 2849 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
2850 | } else { |
2851 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2852 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2853 | } |
2854 | } | |
2855 | } | |
2519a1fc AG |
2856 | |
2857 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2858 | { | |
2859 | /* General inquiry access code (GIAC) */ | |
2860 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2861 | struct hci_cp_inquiry cp; | |
2862 | ||
2863 | BT_DBG("%s", hdev->name); | |
2864 | ||
2865 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2866 | return -EINPROGRESS; | |
2867 | ||
4663262c JH |
2868 | inquiry_cache_flush(hdev); |
2869 | ||
2519a1fc AG |
2870 | memset(&cp, 0, sizeof(cp)); |
2871 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2872 | cp.length = length; | |
2873 | ||
2874 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2875 | } | |
023d5049 AG |
2876 | |
2877 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2878 | { | |
2879 | BT_DBG("%s", hdev->name); | |
2880 | ||
2881 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 2882 | return -EALREADY; |
023d5049 AG |
2883 | |
2884 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2885 | } | |
31f7956c AG |
2886 | |
2887 | u8 bdaddr_to_le(u8 bdaddr_type) | |
2888 | { | |
2889 | switch (bdaddr_type) { | |
2890 | case BDADDR_LE_PUBLIC: | |
2891 | return ADDR_LE_DEV_PUBLIC; | |
2892 | ||
2893 | default: | |
2894 | /* Fallback to LE Random address type */ | |
2895 | return ADDR_LE_DEV_RANDOM; | |
2896 | } | |
2897 | } |