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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
82453021 | 28 | #include <linux/jiffies.h> |
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/kmod.h> | |
31 | ||
32 | #include <linux/types.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/kernel.h> | |
1da177e4 LT |
35 | #include <linux/sched.h> |
36 | #include <linux/slab.h> | |
37 | #include <linux/poll.h> | |
38 | #include <linux/fcntl.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/skbuff.h> | |
f48fd9c8 | 41 | #include <linux/workqueue.h> |
1da177e4 | 42 | #include <linux/interrupt.h> |
611b30f7 | 43 | #include <linux/rfkill.h> |
6bd32326 | 44 | #include <linux/timer.h> |
3a0259bb | 45 | #include <linux/crypto.h> |
1da177e4 LT |
46 | #include <net/sock.h> |
47 | ||
70f23020 | 48 | #include <linux/uaccess.h> |
1da177e4 LT |
49 | #include <asm/unaligned.h> |
50 | ||
51 | #include <net/bluetooth/bluetooth.h> | |
52 | #include <net/bluetooth/hci_core.h> | |
53 | ||
ab81cbf9 JH |
54 | #define AUTO_OFF_TIMEOUT 2000 |
55 | ||
b78752cc | 56 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 57 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 58 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 59 | |
1da177e4 LT |
60 | /* HCI device list */ |
61 | LIST_HEAD(hci_dev_list); | |
62 | DEFINE_RWLOCK(hci_dev_list_lock); | |
63 | ||
64 | /* HCI callback list */ | |
65 | LIST_HEAD(hci_cb_list); | |
66 | DEFINE_RWLOCK(hci_cb_list_lock); | |
67 | ||
1da177e4 LT |
68 | /* ---- HCI notifications ---- */ |
69 | ||
6516455d | 70 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 71 | { |
040030ef | 72 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
73 | } |
74 | ||
75 | /* ---- HCI requests ---- */ | |
76 | ||
23bb5763 | 77 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
1da177e4 | 78 | { |
23bb5763 JH |
79 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
80 | ||
a5040efa JH |
81 | /* If this is the init phase check if the completed command matches |
82 | * the last init command, and if not just return. | |
83 | */ | |
75fb0e32 JH |
84 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
85 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
1036b890 | 86 | u16 opcode = __le16_to_cpu(sent->opcode); |
75fb0e32 JH |
87 | struct sk_buff *skb; |
88 | ||
89 | /* Some CSR based controllers generate a spontaneous | |
90 | * reset complete event during init and any pending | |
91 | * command will never be completed. In such a case we | |
92 | * need to resend whatever was the last sent | |
93 | * command. | |
94 | */ | |
95 | ||
1036b890 | 96 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
75fb0e32 JH |
97 | return; |
98 | ||
99 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); | |
100 | if (skb) { | |
101 | skb_queue_head(&hdev->cmd_q, skb); | |
102 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
103 | } | |
104 | ||
23bb5763 | 105 | return; |
75fb0e32 | 106 | } |
1da177e4 LT |
107 | |
108 | if (hdev->req_status == HCI_REQ_PEND) { | |
109 | hdev->req_result = result; | |
110 | hdev->req_status = HCI_REQ_DONE; | |
111 | wake_up_interruptible(&hdev->req_wait_q); | |
112 | } | |
113 | } | |
114 | ||
115 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
116 | { | |
117 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
118 | ||
119 | if (hdev->req_status == HCI_REQ_PEND) { | |
120 | hdev->req_result = err; | |
121 | hdev->req_status = HCI_REQ_CANCELED; | |
122 | wake_up_interruptible(&hdev->req_wait_q); | |
123 | } | |
124 | } | |
125 | ||
126 | /* Execute request and wait for completion. */ | |
a8c5fb1a GP |
127 | static int __hci_request(struct hci_dev *hdev, |
128 | void (*req)(struct hci_dev *hdev, unsigned long opt), | |
129 | unsigned long opt, __u32 timeout) | |
1da177e4 LT |
130 | { |
131 | DECLARE_WAITQUEUE(wait, current); | |
132 | int err = 0; | |
133 | ||
134 | BT_DBG("%s start", hdev->name); | |
135 | ||
136 | hdev->req_status = HCI_REQ_PEND; | |
137 | ||
138 | add_wait_queue(&hdev->req_wait_q, &wait); | |
139 | set_current_state(TASK_INTERRUPTIBLE); | |
140 | ||
141 | req(hdev, opt); | |
142 | schedule_timeout(timeout); | |
143 | ||
144 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
145 | ||
146 | if (signal_pending(current)) | |
147 | return -EINTR; | |
148 | ||
149 | switch (hdev->req_status) { | |
150 | case HCI_REQ_DONE: | |
e175072f | 151 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
152 | break; |
153 | ||
154 | case HCI_REQ_CANCELED: | |
155 | err = -hdev->req_result; | |
156 | break; | |
157 | ||
158 | default: | |
159 | err = -ETIMEDOUT; | |
160 | break; | |
3ff50b79 | 161 | } |
1da177e4 | 162 | |
a5040efa | 163 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
164 | |
165 | BT_DBG("%s end: err %d", hdev->name, err); | |
166 | ||
167 | return err; | |
168 | } | |
169 | ||
170 | static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), | |
01df8c31 | 171 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
172 | { |
173 | int ret; | |
174 | ||
7c6a329e MH |
175 | if (!test_bit(HCI_UP, &hdev->flags)) |
176 | return -ENETDOWN; | |
177 | ||
1da177e4 LT |
178 | /* Serialize all requests */ |
179 | hci_req_lock(hdev); | |
180 | ret = __hci_request(hdev, req, opt, timeout); | |
181 | hci_req_unlock(hdev); | |
182 | ||
183 | return ret; | |
184 | } | |
185 | ||
186 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
187 | { | |
188 | BT_DBG("%s %ld", hdev->name, opt); | |
189 | ||
190 | /* Reset device */ | |
f630cf0d | 191 | set_bit(HCI_RESET, &hdev->flags); |
a9de9248 | 192 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
193 | } |
194 | ||
e61ef499 | 195 | static void bredr_init(struct hci_dev *hdev) |
1da177e4 | 196 | { |
b0916ea0 | 197 | struct hci_cp_delete_stored_link_key cp; |
1ebb9252 | 198 | __le16 param; |
89f2783d | 199 | __u8 flt_type; |
1da177e4 | 200 | |
2455a3ea AE |
201 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
202 | ||
1da177e4 LT |
203 | /* Mandatory initialization */ |
204 | ||
205 | /* Reset */ | |
a6c511c6 | 206 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
e61ef499 AE |
207 | set_bit(HCI_RESET, &hdev->flags); |
208 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
f630cf0d | 209 | } |
1da177e4 LT |
210 | |
211 | /* Read Local Supported Features */ | |
a9de9248 | 212 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 213 | |
1143e5a6 | 214 | /* Read Local Version */ |
a9de9248 | 215 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1143e5a6 | 216 | |
1da177e4 | 217 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
a9de9248 | 218 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
1da177e4 | 219 | |
1da177e4 | 220 | /* Read BD Address */ |
a9de9248 MH |
221 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
222 | ||
223 | /* Read Class of Device */ | |
224 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); | |
225 | ||
226 | /* Read Local Name */ | |
227 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); | |
1da177e4 LT |
228 | |
229 | /* Read Voice Setting */ | |
a9de9248 | 230 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
1da177e4 LT |
231 | |
232 | /* Optional initialization */ | |
233 | ||
234 | /* Clear Event Filters */ | |
89f2783d | 235 | flt_type = HCI_FLT_CLEAR_ALL; |
a9de9248 | 236 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
1da177e4 | 237 | |
1da177e4 | 238 | /* Connection accept timeout ~20 secs */ |
aca3192c | 239 | param = cpu_to_le16(0x7d00); |
a9de9248 | 240 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
b0916ea0 JH |
241 | |
242 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
243 | cp.delete_all = 1; | |
244 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); | |
1da177e4 LT |
245 | } |
246 | ||
e61ef499 AE |
247 | static void amp_init(struct hci_dev *hdev) |
248 | { | |
2455a3ea AE |
249 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
250 | ||
e61ef499 AE |
251 | /* Reset */ |
252 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); | |
253 | ||
254 | /* Read Local Version */ | |
255 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
6bcbc489 AE |
256 | |
257 | /* Read Local AMP Info */ | |
258 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); | |
e61ef499 AE |
259 | } |
260 | ||
261 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
262 | { | |
263 | struct sk_buff *skb; | |
264 | ||
265 | BT_DBG("%s %ld", hdev->name, opt); | |
266 | ||
267 | /* Driver initialization */ | |
268 | ||
269 | /* Special commands */ | |
270 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
271 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; | |
272 | skb->dev = (void *) hdev; | |
273 | ||
274 | skb_queue_tail(&hdev->cmd_q, skb); | |
275 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
276 | } | |
277 | skb_queue_purge(&hdev->driver_init); | |
278 | ||
279 | switch (hdev->dev_type) { | |
280 | case HCI_BREDR: | |
281 | bredr_init(hdev); | |
282 | break; | |
283 | ||
284 | case HCI_AMP: | |
285 | amp_init(hdev); | |
286 | break; | |
287 | ||
288 | default: | |
289 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
290 | break; | |
291 | } | |
292 | ||
293 | } | |
294 | ||
6ed58ec5 VT |
295 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
296 | { | |
297 | BT_DBG("%s", hdev->name); | |
298 | ||
299 | /* Read LE buffer size */ | |
300 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); | |
301 | } | |
302 | ||
1da177e4 LT |
303 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
304 | { | |
305 | __u8 scan = opt; | |
306 | ||
307 | BT_DBG("%s %x", hdev->name, scan); | |
308 | ||
309 | /* Inquiry and Page scans */ | |
a9de9248 | 310 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
311 | } |
312 | ||
313 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
314 | { | |
315 | __u8 auth = opt; | |
316 | ||
317 | BT_DBG("%s %x", hdev->name, auth); | |
318 | ||
319 | /* Authentication */ | |
a9de9248 | 320 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
321 | } |
322 | ||
323 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
324 | { | |
325 | __u8 encrypt = opt; | |
326 | ||
327 | BT_DBG("%s %x", hdev->name, encrypt); | |
328 | ||
e4e8e37c | 329 | /* Encryption */ |
a9de9248 | 330 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
331 | } |
332 | ||
e4e8e37c MH |
333 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
334 | { | |
335 | __le16 policy = cpu_to_le16(opt); | |
336 | ||
a418b893 | 337 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
338 | |
339 | /* Default link policy */ | |
340 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
341 | } | |
342 | ||
8e87d142 | 343 | /* Get HCI device by index. |
1da177e4 LT |
344 | * Device is held on return. */ |
345 | struct hci_dev *hci_dev_get(int index) | |
346 | { | |
8035ded4 | 347 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
348 | |
349 | BT_DBG("%d", index); | |
350 | ||
351 | if (index < 0) | |
352 | return NULL; | |
353 | ||
354 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 355 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
356 | if (d->id == index) { |
357 | hdev = hci_dev_hold(d); | |
358 | break; | |
359 | } | |
360 | } | |
361 | read_unlock(&hci_dev_list_lock); | |
362 | return hdev; | |
363 | } | |
1da177e4 LT |
364 | |
365 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 366 | |
30dc78e1 JH |
367 | bool hci_discovery_active(struct hci_dev *hdev) |
368 | { | |
369 | struct discovery_state *discov = &hdev->discovery; | |
370 | ||
6fbe195d | 371 | switch (discov->state) { |
343f935b | 372 | case DISCOVERY_FINDING: |
6fbe195d | 373 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
374 | return true; |
375 | ||
6fbe195d AG |
376 | default: |
377 | return false; | |
378 | } | |
30dc78e1 JH |
379 | } |
380 | ||
ff9ef578 JH |
381 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
382 | { | |
383 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
384 | ||
385 | if (hdev->discovery.state == state) | |
386 | return; | |
387 | ||
388 | switch (state) { | |
389 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
390 | if (hdev->discovery.state != DISCOVERY_STARTING) |
391 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
392 | break; |
393 | case DISCOVERY_STARTING: | |
394 | break; | |
343f935b | 395 | case DISCOVERY_FINDING: |
ff9ef578 JH |
396 | mgmt_discovering(hdev, 1); |
397 | break; | |
30dc78e1 JH |
398 | case DISCOVERY_RESOLVING: |
399 | break; | |
ff9ef578 JH |
400 | case DISCOVERY_STOPPING: |
401 | break; | |
402 | } | |
403 | ||
404 | hdev->discovery.state = state; | |
405 | } | |
406 | ||
1da177e4 LT |
407 | static void inquiry_cache_flush(struct hci_dev *hdev) |
408 | { | |
30883512 | 409 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 410 | struct inquiry_entry *p, *n; |
1da177e4 | 411 | |
561aafbc JH |
412 | list_for_each_entry_safe(p, n, &cache->all, all) { |
413 | list_del(&p->all); | |
b57c1a56 | 414 | kfree(p); |
1da177e4 | 415 | } |
561aafbc JH |
416 | |
417 | INIT_LIST_HEAD(&cache->unknown); | |
418 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
419 | } |
420 | ||
a8c5fb1a GP |
421 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
422 | bdaddr_t *bdaddr) | |
1da177e4 | 423 | { |
30883512 | 424 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
425 | struct inquiry_entry *e; |
426 | ||
427 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
428 | ||
561aafbc JH |
429 | list_for_each_entry(e, &cache->all, all) { |
430 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
431 | return e; | |
432 | } | |
433 | ||
434 | return NULL; | |
435 | } | |
436 | ||
437 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 438 | bdaddr_t *bdaddr) |
561aafbc | 439 | { |
30883512 | 440 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
441 | struct inquiry_entry *e; |
442 | ||
443 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
444 | ||
445 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 446 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
447 | return e; |
448 | } | |
449 | ||
450 | return NULL; | |
1da177e4 LT |
451 | } |
452 | ||
30dc78e1 | 453 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
454 | bdaddr_t *bdaddr, |
455 | int state) | |
30dc78e1 JH |
456 | { |
457 | struct discovery_state *cache = &hdev->discovery; | |
458 | struct inquiry_entry *e; | |
459 | ||
460 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); | |
461 | ||
462 | list_for_each_entry(e, &cache->resolve, list) { | |
463 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
464 | return e; | |
465 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
466 | return e; | |
467 | } | |
468 | ||
469 | return NULL; | |
470 | } | |
471 | ||
a3d4e20a | 472 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 473 | struct inquiry_entry *ie) |
a3d4e20a JH |
474 | { |
475 | struct discovery_state *cache = &hdev->discovery; | |
476 | struct list_head *pos = &cache->resolve; | |
477 | struct inquiry_entry *p; | |
478 | ||
479 | list_del(&ie->list); | |
480 | ||
481 | list_for_each_entry(p, &cache->resolve, list) { | |
482 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 483 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
484 | break; |
485 | pos = &p->list; | |
486 | } | |
487 | ||
488 | list_add(&ie->list, pos); | |
489 | } | |
490 | ||
3175405b | 491 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 492 | bool name_known, bool *ssp) |
1da177e4 | 493 | { |
30883512 | 494 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 495 | struct inquiry_entry *ie; |
1da177e4 LT |
496 | |
497 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
498 | ||
388fc8fa JH |
499 | if (ssp) |
500 | *ssp = data->ssp_mode; | |
501 | ||
70f23020 | 502 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 503 | if (ie) { |
388fc8fa JH |
504 | if (ie->data.ssp_mode && ssp) |
505 | *ssp = true; | |
506 | ||
a3d4e20a | 507 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 508 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
509 | ie->data.rssi = data->rssi; |
510 | hci_inquiry_cache_update_resolve(hdev, ie); | |
511 | } | |
512 | ||
561aafbc | 513 | goto update; |
a3d4e20a | 514 | } |
561aafbc JH |
515 | |
516 | /* Entry not in the cache. Add new one. */ | |
517 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
518 | if (!ie) | |
3175405b | 519 | return false; |
561aafbc JH |
520 | |
521 | list_add(&ie->all, &cache->all); | |
522 | ||
523 | if (name_known) { | |
524 | ie->name_state = NAME_KNOWN; | |
525 | } else { | |
526 | ie->name_state = NAME_NOT_KNOWN; | |
527 | list_add(&ie->list, &cache->unknown); | |
528 | } | |
70f23020 | 529 | |
561aafbc JH |
530 | update: |
531 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 532 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
533 | ie->name_state = NAME_KNOWN; |
534 | list_del(&ie->list); | |
1da177e4 LT |
535 | } |
536 | ||
70f23020 AE |
537 | memcpy(&ie->data, data, sizeof(*data)); |
538 | ie->timestamp = jiffies; | |
1da177e4 | 539 | cache->timestamp = jiffies; |
3175405b JH |
540 | |
541 | if (ie->name_state == NAME_NOT_KNOWN) | |
542 | return false; | |
543 | ||
544 | return true; | |
1da177e4 LT |
545 | } |
546 | ||
547 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
548 | { | |
30883512 | 549 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
550 | struct inquiry_info *info = (struct inquiry_info *) buf; |
551 | struct inquiry_entry *e; | |
552 | int copied = 0; | |
553 | ||
561aafbc | 554 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 555 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
556 | |
557 | if (copied >= num) | |
558 | break; | |
559 | ||
1da177e4 LT |
560 | bacpy(&info->bdaddr, &data->bdaddr); |
561 | info->pscan_rep_mode = data->pscan_rep_mode; | |
562 | info->pscan_period_mode = data->pscan_period_mode; | |
563 | info->pscan_mode = data->pscan_mode; | |
564 | memcpy(info->dev_class, data->dev_class, 3); | |
565 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 566 | |
1da177e4 | 567 | info++; |
b57c1a56 | 568 | copied++; |
1da177e4 LT |
569 | } |
570 | ||
571 | BT_DBG("cache %p, copied %d", cache, copied); | |
572 | return copied; | |
573 | } | |
574 | ||
575 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
576 | { | |
577 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
578 | struct hci_cp_inquiry cp; | |
579 | ||
580 | BT_DBG("%s", hdev->name); | |
581 | ||
582 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
583 | return; | |
584 | ||
585 | /* Start Inquiry */ | |
586 | memcpy(&cp.lap, &ir->lap, 3); | |
587 | cp.length = ir->length; | |
588 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 589 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
590 | } |
591 | ||
592 | int hci_inquiry(void __user *arg) | |
593 | { | |
594 | __u8 __user *ptr = arg; | |
595 | struct hci_inquiry_req ir; | |
596 | struct hci_dev *hdev; | |
597 | int err = 0, do_inquiry = 0, max_rsp; | |
598 | long timeo; | |
599 | __u8 *buf; | |
600 | ||
601 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
602 | return -EFAULT; | |
603 | ||
5a08ecce AE |
604 | hdev = hci_dev_get(ir.dev_id); |
605 | if (!hdev) | |
1da177e4 LT |
606 | return -ENODEV; |
607 | ||
09fd0de5 | 608 | hci_dev_lock(hdev); |
8e87d142 | 609 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 610 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1da177e4 LT |
611 | inquiry_cache_flush(hdev); |
612 | do_inquiry = 1; | |
613 | } | |
09fd0de5 | 614 | hci_dev_unlock(hdev); |
1da177e4 | 615 | |
04837f64 | 616 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
617 | |
618 | if (do_inquiry) { | |
619 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
620 | if (err < 0) | |
621 | goto done; | |
622 | } | |
1da177e4 LT |
623 | |
624 | /* for unlimited number of responses we will use buffer with 255 entries */ | |
625 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; | |
626 | ||
627 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
628 | * copy it to the user space. | |
629 | */ | |
01df8c31 | 630 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 631 | if (!buf) { |
1da177e4 LT |
632 | err = -ENOMEM; |
633 | goto done; | |
634 | } | |
635 | ||
09fd0de5 | 636 | hci_dev_lock(hdev); |
1da177e4 | 637 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 638 | hci_dev_unlock(hdev); |
1da177e4 LT |
639 | |
640 | BT_DBG("num_rsp %d", ir.num_rsp); | |
641 | ||
642 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
643 | ptr += sizeof(ir); | |
644 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 645 | ir.num_rsp)) |
1da177e4 | 646 | err = -EFAULT; |
8e87d142 | 647 | } else |
1da177e4 LT |
648 | err = -EFAULT; |
649 | ||
650 | kfree(buf); | |
651 | ||
652 | done: | |
653 | hci_dev_put(hdev); | |
654 | return err; | |
655 | } | |
656 | ||
657 | /* ---- HCI ioctl helpers ---- */ | |
658 | ||
659 | int hci_dev_open(__u16 dev) | |
660 | { | |
661 | struct hci_dev *hdev; | |
662 | int ret = 0; | |
663 | ||
5a08ecce AE |
664 | hdev = hci_dev_get(dev); |
665 | if (!hdev) | |
1da177e4 LT |
666 | return -ENODEV; |
667 | ||
668 | BT_DBG("%s %p", hdev->name, hdev); | |
669 | ||
670 | hci_req_lock(hdev); | |
671 | ||
94324962 JH |
672 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
673 | ret = -ENODEV; | |
674 | goto done; | |
675 | } | |
676 | ||
611b30f7 MH |
677 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
678 | ret = -ERFKILL; | |
679 | goto done; | |
680 | } | |
681 | ||
1da177e4 LT |
682 | if (test_bit(HCI_UP, &hdev->flags)) { |
683 | ret = -EALREADY; | |
684 | goto done; | |
685 | } | |
686 | ||
687 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
688 | set_bit(HCI_RAW, &hdev->flags); | |
689 | ||
07e3b94a AE |
690 | /* Treat all non BR/EDR controllers as raw devices if |
691 | enable_hs is not set */ | |
692 | if (hdev->dev_type != HCI_BREDR && !enable_hs) | |
943da25d MH |
693 | set_bit(HCI_RAW, &hdev->flags); |
694 | ||
1da177e4 LT |
695 | if (hdev->open(hdev)) { |
696 | ret = -EIO; | |
697 | goto done; | |
698 | } | |
699 | ||
700 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
701 | atomic_set(&hdev->cmd_cnt, 1); | |
702 | set_bit(HCI_INIT, &hdev->flags); | |
a5040efa | 703 | hdev->init_last_cmd = 0; |
1da177e4 | 704 | |
04837f64 | 705 | ret = __hci_request(hdev, hci_init_req, 0, |
a8c5fb1a | 706 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 | 707 | |
eead27da | 708 | if (lmp_host_le_capable(hdev)) |
6ed58ec5 | 709 | ret = __hci_request(hdev, hci_le_init_req, 0, |
a8c5fb1a | 710 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
6ed58ec5 | 711 | |
1da177e4 LT |
712 | clear_bit(HCI_INIT, &hdev->flags); |
713 | } | |
714 | ||
715 | if (!ret) { | |
716 | hci_dev_hold(hdev); | |
717 | set_bit(HCI_UP, &hdev->flags); | |
718 | hci_notify(hdev, HCI_DEV_UP); | |
a8b2d5c2 | 719 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 720 | hci_dev_lock(hdev); |
744cf19e | 721 | mgmt_powered(hdev, 1); |
09fd0de5 | 722 | hci_dev_unlock(hdev); |
56e5cb86 | 723 | } |
8e87d142 | 724 | } else { |
1da177e4 | 725 | /* Init failed, cleanup */ |
3eff45ea | 726 | flush_work(&hdev->tx_work); |
c347b765 | 727 | flush_work(&hdev->cmd_work); |
b78752cc | 728 | flush_work(&hdev->rx_work); |
1da177e4 LT |
729 | |
730 | skb_queue_purge(&hdev->cmd_q); | |
731 | skb_queue_purge(&hdev->rx_q); | |
732 | ||
733 | if (hdev->flush) | |
734 | hdev->flush(hdev); | |
735 | ||
736 | if (hdev->sent_cmd) { | |
737 | kfree_skb(hdev->sent_cmd); | |
738 | hdev->sent_cmd = NULL; | |
739 | } | |
740 | ||
741 | hdev->close(hdev); | |
742 | hdev->flags = 0; | |
743 | } | |
744 | ||
745 | done: | |
746 | hci_req_unlock(hdev); | |
747 | hci_dev_put(hdev); | |
748 | return ret; | |
749 | } | |
750 | ||
751 | static int hci_dev_do_close(struct hci_dev *hdev) | |
752 | { | |
753 | BT_DBG("%s %p", hdev->name, hdev); | |
754 | ||
28b75a89 AG |
755 | cancel_work_sync(&hdev->le_scan); |
756 | ||
1da177e4 LT |
757 | hci_req_cancel(hdev, ENODEV); |
758 | hci_req_lock(hdev); | |
759 | ||
760 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 761 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
762 | hci_req_unlock(hdev); |
763 | return 0; | |
764 | } | |
765 | ||
3eff45ea GP |
766 | /* Flush RX and TX works */ |
767 | flush_work(&hdev->tx_work); | |
b78752cc | 768 | flush_work(&hdev->rx_work); |
1da177e4 | 769 | |
16ab91ab | 770 | if (hdev->discov_timeout > 0) { |
e0f9309f | 771 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 772 | hdev->discov_timeout = 0; |
5e5282bb | 773 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
774 | } |
775 | ||
a8b2d5c2 | 776 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
777 | cancel_delayed_work(&hdev->service_cache); |
778 | ||
7ba8b4be AG |
779 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
780 | ||
09fd0de5 | 781 | hci_dev_lock(hdev); |
1da177e4 LT |
782 | inquiry_cache_flush(hdev); |
783 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 784 | hci_dev_unlock(hdev); |
1da177e4 LT |
785 | |
786 | hci_notify(hdev, HCI_DEV_DOWN); | |
787 | ||
788 | if (hdev->flush) | |
789 | hdev->flush(hdev); | |
790 | ||
791 | /* Reset device */ | |
792 | skb_queue_purge(&hdev->cmd_q); | |
793 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 794 | if (!test_bit(HCI_RAW, &hdev->flags) && |
a6c511c6 | 795 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 796 | set_bit(HCI_INIT, &hdev->flags); |
04837f64 | 797 | __hci_request(hdev, hci_reset_req, 0, |
a8c5fb1a | 798 | msecs_to_jiffies(250)); |
1da177e4 LT |
799 | clear_bit(HCI_INIT, &hdev->flags); |
800 | } | |
801 | ||
c347b765 GP |
802 | /* flush cmd work */ |
803 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
804 | |
805 | /* Drop queues */ | |
806 | skb_queue_purge(&hdev->rx_q); | |
807 | skb_queue_purge(&hdev->cmd_q); | |
808 | skb_queue_purge(&hdev->raw_q); | |
809 | ||
810 | /* Drop last sent command */ | |
811 | if (hdev->sent_cmd) { | |
b79f44c1 | 812 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
813 | kfree_skb(hdev->sent_cmd); |
814 | hdev->sent_cmd = NULL; | |
815 | } | |
816 | ||
817 | /* After this point our queues are empty | |
818 | * and no tasks are scheduled. */ | |
819 | hdev->close(hdev); | |
820 | ||
8ee56540 MH |
821 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
822 | hci_dev_lock(hdev); | |
823 | mgmt_powered(hdev, 0); | |
824 | hci_dev_unlock(hdev); | |
825 | } | |
5add6af8 | 826 | |
1da177e4 LT |
827 | /* Clear flags */ |
828 | hdev->flags = 0; | |
829 | ||
e59fda8d | 830 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 831 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 832 | |
1da177e4 LT |
833 | hci_req_unlock(hdev); |
834 | ||
835 | hci_dev_put(hdev); | |
836 | return 0; | |
837 | } | |
838 | ||
839 | int hci_dev_close(__u16 dev) | |
840 | { | |
841 | struct hci_dev *hdev; | |
842 | int err; | |
843 | ||
70f23020 AE |
844 | hdev = hci_dev_get(dev); |
845 | if (!hdev) | |
1da177e4 | 846 | return -ENODEV; |
8ee56540 MH |
847 | |
848 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
849 | cancel_delayed_work(&hdev->power_off); | |
850 | ||
1da177e4 | 851 | err = hci_dev_do_close(hdev); |
8ee56540 | 852 | |
1da177e4 LT |
853 | hci_dev_put(hdev); |
854 | return err; | |
855 | } | |
856 | ||
857 | int hci_dev_reset(__u16 dev) | |
858 | { | |
859 | struct hci_dev *hdev; | |
860 | int ret = 0; | |
861 | ||
70f23020 AE |
862 | hdev = hci_dev_get(dev); |
863 | if (!hdev) | |
1da177e4 LT |
864 | return -ENODEV; |
865 | ||
866 | hci_req_lock(hdev); | |
1da177e4 LT |
867 | |
868 | if (!test_bit(HCI_UP, &hdev->flags)) | |
869 | goto done; | |
870 | ||
871 | /* Drop queues */ | |
872 | skb_queue_purge(&hdev->rx_q); | |
873 | skb_queue_purge(&hdev->cmd_q); | |
874 | ||
09fd0de5 | 875 | hci_dev_lock(hdev); |
1da177e4 LT |
876 | inquiry_cache_flush(hdev); |
877 | hci_conn_hash_flush(hdev); | |
09fd0de5 | 878 | hci_dev_unlock(hdev); |
1da177e4 LT |
879 | |
880 | if (hdev->flush) | |
881 | hdev->flush(hdev); | |
882 | ||
8e87d142 | 883 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 884 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
885 | |
886 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
04837f64 | 887 | ret = __hci_request(hdev, hci_reset_req, 0, |
a8c5fb1a | 888 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
889 | |
890 | done: | |
1da177e4 LT |
891 | hci_req_unlock(hdev); |
892 | hci_dev_put(hdev); | |
893 | return ret; | |
894 | } | |
895 | ||
896 | int hci_dev_reset_stat(__u16 dev) | |
897 | { | |
898 | struct hci_dev *hdev; | |
899 | int ret = 0; | |
900 | ||
70f23020 AE |
901 | hdev = hci_dev_get(dev); |
902 | if (!hdev) | |
1da177e4 LT |
903 | return -ENODEV; |
904 | ||
905 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
906 | ||
907 | hci_dev_put(hdev); | |
908 | ||
909 | return ret; | |
910 | } | |
911 | ||
912 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
913 | { | |
914 | struct hci_dev *hdev; | |
915 | struct hci_dev_req dr; | |
916 | int err = 0; | |
917 | ||
918 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
919 | return -EFAULT; | |
920 | ||
70f23020 AE |
921 | hdev = hci_dev_get(dr.dev_id); |
922 | if (!hdev) | |
1da177e4 LT |
923 | return -ENODEV; |
924 | ||
925 | switch (cmd) { | |
926 | case HCISETAUTH: | |
04837f64 | 927 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
a8c5fb1a | 928 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
929 | break; |
930 | ||
931 | case HCISETENCRYPT: | |
932 | if (!lmp_encrypt_capable(hdev)) { | |
933 | err = -EOPNOTSUPP; | |
934 | break; | |
935 | } | |
936 | ||
937 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
938 | /* Auth must be enabled first */ | |
04837f64 | 939 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
a8c5fb1a | 940 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
941 | if (err) |
942 | break; | |
943 | } | |
944 | ||
04837f64 | 945 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
a8c5fb1a | 946 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
947 | break; |
948 | ||
949 | case HCISETSCAN: | |
04837f64 | 950 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
a8c5fb1a | 951 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
952 | break; |
953 | ||
1da177e4 | 954 | case HCISETLINKPOL: |
e4e8e37c | 955 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
a8c5fb1a | 956 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
1da177e4 LT |
957 | break; |
958 | ||
959 | case HCISETLINKMODE: | |
e4e8e37c MH |
960 | hdev->link_mode = ((__u16) dr.dev_opt) & |
961 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
962 | break; | |
963 | ||
964 | case HCISETPTYPE: | |
965 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
966 | break; |
967 | ||
968 | case HCISETACLMTU: | |
e4e8e37c MH |
969 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
970 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
971 | break; |
972 | ||
973 | case HCISETSCOMTU: | |
e4e8e37c MH |
974 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
975 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
976 | break; |
977 | ||
978 | default: | |
979 | err = -EINVAL; | |
980 | break; | |
981 | } | |
e4e8e37c | 982 | |
1da177e4 LT |
983 | hci_dev_put(hdev); |
984 | return err; | |
985 | } | |
986 | ||
987 | int hci_get_dev_list(void __user *arg) | |
988 | { | |
8035ded4 | 989 | struct hci_dev *hdev; |
1da177e4 LT |
990 | struct hci_dev_list_req *dl; |
991 | struct hci_dev_req *dr; | |
1da177e4 LT |
992 | int n = 0, size, err; |
993 | __u16 dev_num; | |
994 | ||
995 | if (get_user(dev_num, (__u16 __user *) arg)) | |
996 | return -EFAULT; | |
997 | ||
998 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
999 | return -EINVAL; | |
1000 | ||
1001 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1002 | ||
70f23020 AE |
1003 | dl = kzalloc(size, GFP_KERNEL); |
1004 | if (!dl) | |
1da177e4 LT |
1005 | return -ENOMEM; |
1006 | ||
1007 | dr = dl->dev_req; | |
1008 | ||
f20d09d5 | 1009 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1010 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1011 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1012 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1013 | |
a8b2d5c2 JH |
1014 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1015 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1016 | |
1da177e4 LT |
1017 | (dr + n)->dev_id = hdev->id; |
1018 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1019 | |
1da177e4 LT |
1020 | if (++n >= dev_num) |
1021 | break; | |
1022 | } | |
f20d09d5 | 1023 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1024 | |
1025 | dl->dev_num = n; | |
1026 | size = sizeof(*dl) + n * sizeof(*dr); | |
1027 | ||
1028 | err = copy_to_user(arg, dl, size); | |
1029 | kfree(dl); | |
1030 | ||
1031 | return err ? -EFAULT : 0; | |
1032 | } | |
1033 | ||
1034 | int hci_get_dev_info(void __user *arg) | |
1035 | { | |
1036 | struct hci_dev *hdev; | |
1037 | struct hci_dev_info di; | |
1038 | int err = 0; | |
1039 | ||
1040 | if (copy_from_user(&di, arg, sizeof(di))) | |
1041 | return -EFAULT; | |
1042 | ||
70f23020 AE |
1043 | hdev = hci_dev_get(di.dev_id); |
1044 | if (!hdev) | |
1da177e4 LT |
1045 | return -ENODEV; |
1046 | ||
a8b2d5c2 | 1047 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1048 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1049 | |
a8b2d5c2 JH |
1050 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1051 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1052 | |
1da177e4 LT |
1053 | strcpy(di.name, hdev->name); |
1054 | di.bdaddr = hdev->bdaddr; | |
943da25d | 1055 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
1056 | di.flags = hdev->flags; |
1057 | di.pkt_type = hdev->pkt_type; | |
1058 | di.acl_mtu = hdev->acl_mtu; | |
1059 | di.acl_pkts = hdev->acl_pkts; | |
1060 | di.sco_mtu = hdev->sco_mtu; | |
1061 | di.sco_pkts = hdev->sco_pkts; | |
1062 | di.link_policy = hdev->link_policy; | |
1063 | di.link_mode = hdev->link_mode; | |
1064 | ||
1065 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1066 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1067 | ||
1068 | if (copy_to_user(arg, &di, sizeof(di))) | |
1069 | err = -EFAULT; | |
1070 | ||
1071 | hci_dev_put(hdev); | |
1072 | ||
1073 | return err; | |
1074 | } | |
1075 | ||
1076 | /* ---- Interface to HCI drivers ---- */ | |
1077 | ||
611b30f7 MH |
1078 | static int hci_rfkill_set_block(void *data, bool blocked) |
1079 | { | |
1080 | struct hci_dev *hdev = data; | |
1081 | ||
1082 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1083 | ||
1084 | if (!blocked) | |
1085 | return 0; | |
1086 | ||
1087 | hci_dev_do_close(hdev); | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | static const struct rfkill_ops hci_rfkill_ops = { | |
1093 | .set_block = hci_rfkill_set_block, | |
1094 | }; | |
1095 | ||
ab81cbf9 JH |
1096 | static void hci_power_on(struct work_struct *work) |
1097 | { | |
1098 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
1099 | ||
1100 | BT_DBG("%s", hdev->name); | |
1101 | ||
1102 | if (hci_dev_open(hdev->id) < 0) | |
1103 | return; | |
1104 | ||
a8b2d5c2 | 1105 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
80b7ab33 | 1106 | schedule_delayed_work(&hdev->power_off, |
a8c5fb1a | 1107 | msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
ab81cbf9 | 1108 | |
a8b2d5c2 | 1109 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1110 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1111 | } |
1112 | ||
1113 | static void hci_power_off(struct work_struct *work) | |
1114 | { | |
3243553f | 1115 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1116 | power_off.work); |
ab81cbf9 JH |
1117 | |
1118 | BT_DBG("%s", hdev->name); | |
1119 | ||
8ee56540 | 1120 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1121 | } |
1122 | ||
16ab91ab JH |
1123 | static void hci_discov_off(struct work_struct *work) |
1124 | { | |
1125 | struct hci_dev *hdev; | |
1126 | u8 scan = SCAN_PAGE; | |
1127 | ||
1128 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1129 | ||
1130 | BT_DBG("%s", hdev->name); | |
1131 | ||
09fd0de5 | 1132 | hci_dev_lock(hdev); |
16ab91ab JH |
1133 | |
1134 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); | |
1135 | ||
1136 | hdev->discov_timeout = 0; | |
1137 | ||
09fd0de5 | 1138 | hci_dev_unlock(hdev); |
16ab91ab JH |
1139 | } |
1140 | ||
2aeb9a1a JH |
1141 | int hci_uuids_clear(struct hci_dev *hdev) |
1142 | { | |
1143 | struct list_head *p, *n; | |
1144 | ||
1145 | list_for_each_safe(p, n, &hdev->uuids) { | |
1146 | struct bt_uuid *uuid; | |
1147 | ||
1148 | uuid = list_entry(p, struct bt_uuid, list); | |
1149 | ||
1150 | list_del(p); | |
1151 | kfree(uuid); | |
1152 | } | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
55ed8ca1 JH |
1157 | int hci_link_keys_clear(struct hci_dev *hdev) |
1158 | { | |
1159 | struct list_head *p, *n; | |
1160 | ||
1161 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1162 | struct link_key *key; | |
1163 | ||
1164 | key = list_entry(p, struct link_key, list); | |
1165 | ||
1166 | list_del(p); | |
1167 | kfree(key); | |
1168 | } | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
b899efaf VCG |
1173 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1174 | { | |
1175 | struct smp_ltk *k, *tmp; | |
1176 | ||
1177 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1178 | list_del(&k->list); | |
1179 | kfree(k); | |
1180 | } | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
55ed8ca1 JH |
1185 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1186 | { | |
8035ded4 | 1187 | struct link_key *k; |
55ed8ca1 | 1188 | |
8035ded4 | 1189 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1190 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1191 | return k; | |
55ed8ca1 JH |
1192 | |
1193 | return NULL; | |
1194 | } | |
1195 | ||
745c0ce3 | 1196 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1197 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1198 | { |
1199 | /* Legacy key */ | |
1200 | if (key_type < 0x03) | |
745c0ce3 | 1201 | return true; |
d25e28ab JH |
1202 | |
1203 | /* Debug keys are insecure so don't store them persistently */ | |
1204 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1205 | return false; |
d25e28ab JH |
1206 | |
1207 | /* Changed combination key and there's no previous one */ | |
1208 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1209 | return false; |
d25e28ab JH |
1210 | |
1211 | /* Security mode 3 case */ | |
1212 | if (!conn) | |
745c0ce3 | 1213 | return true; |
d25e28ab JH |
1214 | |
1215 | /* Neither local nor remote side had no-bonding as requirement */ | |
1216 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1217 | return true; |
d25e28ab JH |
1218 | |
1219 | /* Local side had dedicated bonding as requirement */ | |
1220 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1221 | return true; |
d25e28ab JH |
1222 | |
1223 | /* Remote side had dedicated bonding as requirement */ | |
1224 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1225 | return true; |
d25e28ab JH |
1226 | |
1227 | /* If none of the above criteria match, then don't store the key | |
1228 | * persistently */ | |
745c0ce3 | 1229 | return false; |
d25e28ab JH |
1230 | } |
1231 | ||
c9839a11 | 1232 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1233 | { |
c9839a11 | 1234 | struct smp_ltk *k; |
75d262c2 | 1235 | |
c9839a11 VCG |
1236 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
1237 | if (k->ediv != ediv || | |
a8c5fb1a | 1238 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
1239 | continue; |
1240 | ||
c9839a11 | 1241 | return k; |
75d262c2 VCG |
1242 | } |
1243 | ||
1244 | return NULL; | |
1245 | } | |
1246 | EXPORT_SYMBOL(hci_find_ltk); | |
1247 | ||
c9839a11 | 1248 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 1249 | u8 addr_type) |
75d262c2 | 1250 | { |
c9839a11 | 1251 | struct smp_ltk *k; |
75d262c2 | 1252 | |
c9839a11 VCG |
1253 | list_for_each_entry(k, &hdev->long_term_keys, list) |
1254 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 1255 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
1256 | return k; |
1257 | ||
1258 | return NULL; | |
1259 | } | |
c9839a11 | 1260 | EXPORT_SYMBOL(hci_find_ltk_by_addr); |
75d262c2 | 1261 | |
d25e28ab | 1262 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 1263 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
1264 | { |
1265 | struct link_key *key, *old_key; | |
745c0ce3 VA |
1266 | u8 old_key_type; |
1267 | bool persistent; | |
55ed8ca1 JH |
1268 | |
1269 | old_key = hci_find_link_key(hdev, bdaddr); | |
1270 | if (old_key) { | |
1271 | old_key_type = old_key->type; | |
1272 | key = old_key; | |
1273 | } else { | |
12adcf3a | 1274 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
1275 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
1276 | if (!key) | |
1277 | return -ENOMEM; | |
1278 | list_add(&key->list, &hdev->link_keys); | |
1279 | } | |
1280 | ||
1281 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); | |
1282 | ||
d25e28ab JH |
1283 | /* Some buggy controller combinations generate a changed |
1284 | * combination key for legacy pairing even when there's no | |
1285 | * previous key */ | |
1286 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 1287 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 1288 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
1289 | if (conn) |
1290 | conn->key_type = type; | |
1291 | } | |
d25e28ab | 1292 | |
55ed8ca1 JH |
1293 | bacpy(&key->bdaddr, bdaddr); |
1294 | memcpy(key->val, val, 16); | |
55ed8ca1 JH |
1295 | key->pin_len = pin_len; |
1296 | ||
b6020ba0 | 1297 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 1298 | key->type = old_key_type; |
4748fed2 JH |
1299 | else |
1300 | key->type = type; | |
1301 | ||
4df378a1 JH |
1302 | if (!new_key) |
1303 | return 0; | |
1304 | ||
1305 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
1306 | ||
744cf19e | 1307 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 1308 | |
6ec5bcad VA |
1309 | if (conn) |
1310 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
1311 | |
1312 | return 0; | |
1313 | } | |
1314 | ||
c9839a11 | 1315 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 1316 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 1317 | ediv, u8 rand[8]) |
75d262c2 | 1318 | { |
c9839a11 | 1319 | struct smp_ltk *key, *old_key; |
75d262c2 | 1320 | |
c9839a11 VCG |
1321 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
1322 | return 0; | |
75d262c2 | 1323 | |
c9839a11 VCG |
1324 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
1325 | if (old_key) | |
75d262c2 | 1326 | key = old_key; |
c9839a11 VCG |
1327 | else { |
1328 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
1329 | if (!key) |
1330 | return -ENOMEM; | |
c9839a11 | 1331 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
1332 | } |
1333 | ||
75d262c2 | 1334 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
1335 | key->bdaddr_type = addr_type; |
1336 | memcpy(key->val, tk, sizeof(key->val)); | |
1337 | key->authenticated = authenticated; | |
1338 | key->ediv = ediv; | |
1339 | key->enc_size = enc_size; | |
1340 | key->type = type; | |
1341 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 1342 | |
c9839a11 VCG |
1343 | if (!new_key) |
1344 | return 0; | |
75d262c2 | 1345 | |
261cc5aa VCG |
1346 | if (type & HCI_SMP_LTK) |
1347 | mgmt_new_ltk(hdev, key, 1); | |
1348 | ||
75d262c2 VCG |
1349 | return 0; |
1350 | } | |
1351 | ||
55ed8ca1 JH |
1352 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1353 | { | |
1354 | struct link_key *key; | |
1355 | ||
1356 | key = hci_find_link_key(hdev, bdaddr); | |
1357 | if (!key) | |
1358 | return -ENOENT; | |
1359 | ||
1360 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1361 | ||
1362 | list_del(&key->list); | |
1363 | kfree(key); | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
b899efaf VCG |
1368 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1369 | { | |
1370 | struct smp_ltk *k, *tmp; | |
1371 | ||
1372 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1373 | if (bacmp(bdaddr, &k->bdaddr)) | |
1374 | continue; | |
1375 | ||
1376 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1377 | ||
1378 | list_del(&k->list); | |
1379 | kfree(k); | |
1380 | } | |
1381 | ||
1382 | return 0; | |
1383 | } | |
1384 | ||
6bd32326 VT |
1385 | /* HCI command timer function */ |
1386 | static void hci_cmd_timer(unsigned long arg) | |
1387 | { | |
1388 | struct hci_dev *hdev = (void *) arg; | |
1389 | ||
1390 | BT_ERR("%s command tx timeout", hdev->name); | |
1391 | atomic_set(&hdev->cmd_cnt, 1); | |
c347b765 | 1392 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
1393 | } |
1394 | ||
2763eda6 | 1395 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 1396 | bdaddr_t *bdaddr) |
2763eda6 SJ |
1397 | { |
1398 | struct oob_data *data; | |
1399 | ||
1400 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
1401 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
1402 | return data; | |
1403 | ||
1404 | return NULL; | |
1405 | } | |
1406 | ||
1407 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
1408 | { | |
1409 | struct oob_data *data; | |
1410 | ||
1411 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1412 | if (!data) | |
1413 | return -ENOENT; | |
1414 | ||
1415 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); | |
1416 | ||
1417 | list_del(&data->list); | |
1418 | kfree(data); | |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
1424 | { | |
1425 | struct oob_data *data, *n; | |
1426 | ||
1427 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
1428 | list_del(&data->list); | |
1429 | kfree(data); | |
1430 | } | |
1431 | ||
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 1436 | u8 *randomizer) |
2763eda6 SJ |
1437 | { |
1438 | struct oob_data *data; | |
1439 | ||
1440 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
1441 | ||
1442 | if (!data) { | |
1443 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
1444 | if (!data) | |
1445 | return -ENOMEM; | |
1446 | ||
1447 | bacpy(&data->bdaddr, bdaddr); | |
1448 | list_add(&data->list, &hdev->remote_oob_data); | |
1449 | } | |
1450 | ||
1451 | memcpy(data->hash, hash, sizeof(data->hash)); | |
1452 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
1453 | ||
1454 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); | |
1455 | ||
1456 | return 0; | |
1457 | } | |
1458 | ||
04124681 | 1459 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
b2a66aad | 1460 | { |
8035ded4 | 1461 | struct bdaddr_list *b; |
b2a66aad | 1462 | |
8035ded4 | 1463 | list_for_each_entry(b, &hdev->blacklist, list) |
b2a66aad AJ |
1464 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
1465 | return b; | |
b2a66aad AJ |
1466 | |
1467 | return NULL; | |
1468 | } | |
1469 | ||
1470 | int hci_blacklist_clear(struct hci_dev *hdev) | |
1471 | { | |
1472 | struct list_head *p, *n; | |
1473 | ||
1474 | list_for_each_safe(p, n, &hdev->blacklist) { | |
1475 | struct bdaddr_list *b; | |
1476 | ||
1477 | b = list_entry(p, struct bdaddr_list, list); | |
1478 | ||
1479 | list_del(p); | |
1480 | kfree(b); | |
1481 | } | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
88c1fe4b | 1486 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1487 | { |
1488 | struct bdaddr_list *entry; | |
b2a66aad AJ |
1489 | |
1490 | if (bacmp(bdaddr, BDADDR_ANY) == 0) | |
1491 | return -EBADF; | |
1492 | ||
5e762444 AJ |
1493 | if (hci_blacklist_lookup(hdev, bdaddr)) |
1494 | return -EEXIST; | |
b2a66aad AJ |
1495 | |
1496 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
1497 | if (!entry) |
1498 | return -ENOMEM; | |
b2a66aad AJ |
1499 | |
1500 | bacpy(&entry->bdaddr, bdaddr); | |
1501 | ||
1502 | list_add(&entry->list, &hdev->blacklist); | |
1503 | ||
88c1fe4b | 1504 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
1505 | } |
1506 | ||
88c1fe4b | 1507 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
1508 | { |
1509 | struct bdaddr_list *entry; | |
b2a66aad | 1510 | |
1ec918ce | 1511 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
5e762444 | 1512 | return hci_blacklist_clear(hdev); |
b2a66aad AJ |
1513 | |
1514 | entry = hci_blacklist_lookup(hdev, bdaddr); | |
1ec918ce | 1515 | if (!entry) |
5e762444 | 1516 | return -ENOENT; |
b2a66aad AJ |
1517 | |
1518 | list_del(&entry->list); | |
1519 | kfree(entry); | |
1520 | ||
88c1fe4b | 1521 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
1522 | } |
1523 | ||
7ba8b4be AG |
1524 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
1525 | { | |
1526 | struct le_scan_params *param = (struct le_scan_params *) opt; | |
1527 | struct hci_cp_le_set_scan_param cp; | |
1528 | ||
1529 | memset(&cp, 0, sizeof(cp)); | |
1530 | cp.type = param->type; | |
1531 | cp.interval = cpu_to_le16(param->interval); | |
1532 | cp.window = cpu_to_le16(param->window); | |
1533 | ||
1534 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); | |
1535 | } | |
1536 | ||
1537 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) | |
1538 | { | |
1539 | struct hci_cp_le_set_scan_enable cp; | |
1540 | ||
1541 | memset(&cp, 0, sizeof(cp)); | |
1542 | cp.enable = 1; | |
1543 | ||
1544 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1545 | } | |
1546 | ||
1547 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, | |
04124681 | 1548 | u16 window, int timeout) |
7ba8b4be AG |
1549 | { |
1550 | long timeo = msecs_to_jiffies(3000); | |
1551 | struct le_scan_params param; | |
1552 | int err; | |
1553 | ||
1554 | BT_DBG("%s", hdev->name); | |
1555 | ||
1556 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1557 | return -EINPROGRESS; | |
1558 | ||
1559 | param.type = type; | |
1560 | param.interval = interval; | |
1561 | param.window = window; | |
1562 | ||
1563 | hci_req_lock(hdev); | |
1564 | ||
1565 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, | |
04124681 | 1566 | timeo); |
7ba8b4be AG |
1567 | if (!err) |
1568 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); | |
1569 | ||
1570 | hci_req_unlock(hdev); | |
1571 | ||
1572 | if (err < 0) | |
1573 | return err; | |
1574 | ||
1575 | schedule_delayed_work(&hdev->le_scan_disable, | |
04124681 | 1576 | msecs_to_jiffies(timeout)); |
7ba8b4be AG |
1577 | |
1578 | return 0; | |
1579 | } | |
1580 | ||
7dbfac1d AG |
1581 | int hci_cancel_le_scan(struct hci_dev *hdev) |
1582 | { | |
1583 | BT_DBG("%s", hdev->name); | |
1584 | ||
1585 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
1586 | return -EALREADY; | |
1587 | ||
1588 | if (cancel_delayed_work(&hdev->le_scan_disable)) { | |
1589 | struct hci_cp_le_set_scan_enable cp; | |
1590 | ||
1591 | /* Send HCI command to disable LE Scan */ | |
1592 | memset(&cp, 0, sizeof(cp)); | |
1593 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1594 | } | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
7ba8b4be AG |
1599 | static void le_scan_disable_work(struct work_struct *work) |
1600 | { | |
1601 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 1602 | le_scan_disable.work); |
7ba8b4be AG |
1603 | struct hci_cp_le_set_scan_enable cp; |
1604 | ||
1605 | BT_DBG("%s", hdev->name); | |
1606 | ||
1607 | memset(&cp, 0, sizeof(cp)); | |
1608 | ||
1609 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
1610 | } | |
1611 | ||
28b75a89 AG |
1612 | static void le_scan_work(struct work_struct *work) |
1613 | { | |
1614 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); | |
1615 | struct le_scan_params *param = &hdev->le_scan_params; | |
1616 | ||
1617 | BT_DBG("%s", hdev->name); | |
1618 | ||
04124681 GP |
1619 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
1620 | param->timeout); | |
28b75a89 AG |
1621 | } |
1622 | ||
1623 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, | |
04124681 | 1624 | int timeout) |
28b75a89 AG |
1625 | { |
1626 | struct le_scan_params *param = &hdev->le_scan_params; | |
1627 | ||
1628 | BT_DBG("%s", hdev->name); | |
1629 | ||
1630 | if (work_busy(&hdev->le_scan)) | |
1631 | return -EINPROGRESS; | |
1632 | ||
1633 | param->type = type; | |
1634 | param->interval = interval; | |
1635 | param->window = window; | |
1636 | param->timeout = timeout; | |
1637 | ||
1638 | queue_work(system_long_wq, &hdev->le_scan); | |
1639 | ||
1640 | return 0; | |
1641 | } | |
1642 | ||
9be0dab7 DH |
1643 | /* Alloc HCI device */ |
1644 | struct hci_dev *hci_alloc_dev(void) | |
1645 | { | |
1646 | struct hci_dev *hdev; | |
1647 | ||
1648 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
1649 | if (!hdev) | |
1650 | return NULL; | |
1651 | ||
b1b813d4 DH |
1652 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
1653 | hdev->esco_type = (ESCO_HV1); | |
1654 | hdev->link_mode = (HCI_LM_ACCEPT); | |
1655 | hdev->io_capability = 0x03; /* No Input No Output */ | |
1656 | ||
b1b813d4 DH |
1657 | hdev->sniff_max_interval = 800; |
1658 | hdev->sniff_min_interval = 80; | |
1659 | ||
1660 | mutex_init(&hdev->lock); | |
1661 | mutex_init(&hdev->req_lock); | |
1662 | ||
1663 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
1664 | INIT_LIST_HEAD(&hdev->blacklist); | |
1665 | INIT_LIST_HEAD(&hdev->uuids); | |
1666 | INIT_LIST_HEAD(&hdev->link_keys); | |
1667 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
1668 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
b1b813d4 DH |
1669 | |
1670 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
1671 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
1672 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
1673 | INIT_WORK(&hdev->power_on, hci_power_on); | |
1674 | INIT_WORK(&hdev->le_scan, le_scan_work); | |
1675 | ||
b1b813d4 DH |
1676 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
1677 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
1678 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
1679 | ||
9be0dab7 | 1680 | skb_queue_head_init(&hdev->driver_init); |
b1b813d4 DH |
1681 | skb_queue_head_init(&hdev->rx_q); |
1682 | skb_queue_head_init(&hdev->cmd_q); | |
1683 | skb_queue_head_init(&hdev->raw_q); | |
1684 | ||
1685 | init_waitqueue_head(&hdev->req_wait_q); | |
1686 | ||
1687 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); | |
1688 | ||
b1b813d4 DH |
1689 | hci_init_sysfs(hdev); |
1690 | discovery_init(hdev); | |
1691 | hci_conn_hash_init(hdev); | |
9be0dab7 DH |
1692 | |
1693 | return hdev; | |
1694 | } | |
1695 | EXPORT_SYMBOL(hci_alloc_dev); | |
1696 | ||
1697 | /* Free HCI device */ | |
1698 | void hci_free_dev(struct hci_dev *hdev) | |
1699 | { | |
1700 | skb_queue_purge(&hdev->driver_init); | |
1701 | ||
1702 | /* will free via device release */ | |
1703 | put_device(&hdev->dev); | |
1704 | } | |
1705 | EXPORT_SYMBOL(hci_free_dev); | |
1706 | ||
1da177e4 LT |
1707 | /* Register HCI device */ |
1708 | int hci_register_dev(struct hci_dev *hdev) | |
1709 | { | |
fc50744c | 1710 | struct list_head *head, *p; |
b1b813d4 | 1711 | int id, error; |
1da177e4 | 1712 | |
010666a1 | 1713 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
1714 | return -EINVAL; |
1715 | ||
fc50744c UF |
1716 | write_lock(&hci_dev_list_lock); |
1717 | ||
08add513 MM |
1718 | /* Do not allow HCI_AMP devices to register at index 0, |
1719 | * so the index can be used as the AMP controller ID. | |
1720 | */ | |
1721 | id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; | |
fc50744c | 1722 | head = &hci_dev_list; |
1da177e4 LT |
1723 | |
1724 | /* Find first available device id */ | |
1725 | list_for_each(p, &hci_dev_list) { | |
fc50744c UF |
1726 | int nid = list_entry(p, struct hci_dev, list)->id; |
1727 | if (nid > id) | |
1da177e4 | 1728 | break; |
fc50744c UF |
1729 | if (nid == id) |
1730 | id++; | |
1731 | head = p; | |
1da177e4 | 1732 | } |
8e87d142 | 1733 | |
1da177e4 LT |
1734 | sprintf(hdev->name, "hci%d", id); |
1735 | hdev->id = id; | |
2d8b3a11 AE |
1736 | |
1737 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
1738 | ||
fc50744c | 1739 | list_add(&hdev->list, head); |
1da177e4 | 1740 | |
f20d09d5 | 1741 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 1742 | |
32845eb1 | 1743 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
a8c5fb1a | 1744 | WQ_MEM_RECLAIM, 1); |
33ca954d DH |
1745 | if (!hdev->workqueue) { |
1746 | error = -ENOMEM; | |
1747 | goto err; | |
1748 | } | |
f48fd9c8 | 1749 | |
33ca954d DH |
1750 | error = hci_add_sysfs(hdev); |
1751 | if (error < 0) | |
1752 | goto err_wqueue; | |
1da177e4 | 1753 | |
611b30f7 | 1754 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
1755 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
1756 | hdev); | |
611b30f7 MH |
1757 | if (hdev->rfkill) { |
1758 | if (rfkill_register(hdev->rfkill) < 0) { | |
1759 | rfkill_destroy(hdev->rfkill); | |
1760 | hdev->rfkill = NULL; | |
1761 | } | |
1762 | } | |
1763 | ||
a8b2d5c2 JH |
1764 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1765 | set_bit(HCI_SETUP, &hdev->dev_flags); | |
7f971041 | 1766 | schedule_work(&hdev->power_on); |
ab81cbf9 | 1767 | |
1da177e4 | 1768 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 1769 | hci_dev_hold(hdev); |
1da177e4 LT |
1770 | |
1771 | return id; | |
f48fd9c8 | 1772 | |
33ca954d DH |
1773 | err_wqueue: |
1774 | destroy_workqueue(hdev->workqueue); | |
1775 | err: | |
f20d09d5 | 1776 | write_lock(&hci_dev_list_lock); |
f48fd9c8 | 1777 | list_del(&hdev->list); |
f20d09d5 | 1778 | write_unlock(&hci_dev_list_lock); |
f48fd9c8 | 1779 | |
33ca954d | 1780 | return error; |
1da177e4 LT |
1781 | } |
1782 | EXPORT_SYMBOL(hci_register_dev); | |
1783 | ||
1784 | /* Unregister HCI device */ | |
59735631 | 1785 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 1786 | { |
ef222013 MH |
1787 | int i; |
1788 | ||
c13854ce | 1789 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 1790 | |
94324962 JH |
1791 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
1792 | ||
f20d09d5 | 1793 | write_lock(&hci_dev_list_lock); |
1da177e4 | 1794 | list_del(&hdev->list); |
f20d09d5 | 1795 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1796 | |
1797 | hci_dev_do_close(hdev); | |
1798 | ||
cd4c5391 | 1799 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
1800 | kfree_skb(hdev->reassembly[i]); |
1801 | ||
ab81cbf9 | 1802 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 1803 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 1804 | hci_dev_lock(hdev); |
744cf19e | 1805 | mgmt_index_removed(hdev); |
09fd0de5 | 1806 | hci_dev_unlock(hdev); |
56e5cb86 | 1807 | } |
ab81cbf9 | 1808 | |
2e58ef3e JH |
1809 | /* mgmt_index_removed should take care of emptying the |
1810 | * pending list */ | |
1811 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
1812 | ||
1da177e4 LT |
1813 | hci_notify(hdev, HCI_DEV_UNREG); |
1814 | ||
611b30f7 MH |
1815 | if (hdev->rfkill) { |
1816 | rfkill_unregister(hdev->rfkill); | |
1817 | rfkill_destroy(hdev->rfkill); | |
1818 | } | |
1819 | ||
ce242970 | 1820 | hci_del_sysfs(hdev); |
147e2d59 | 1821 | |
f48fd9c8 MH |
1822 | destroy_workqueue(hdev->workqueue); |
1823 | ||
09fd0de5 | 1824 | hci_dev_lock(hdev); |
e2e0cacb | 1825 | hci_blacklist_clear(hdev); |
2aeb9a1a | 1826 | hci_uuids_clear(hdev); |
55ed8ca1 | 1827 | hci_link_keys_clear(hdev); |
b899efaf | 1828 | hci_smp_ltks_clear(hdev); |
2763eda6 | 1829 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 1830 | hci_dev_unlock(hdev); |
e2e0cacb | 1831 | |
dc946bd8 | 1832 | hci_dev_put(hdev); |
1da177e4 LT |
1833 | } |
1834 | EXPORT_SYMBOL(hci_unregister_dev); | |
1835 | ||
1836 | /* Suspend HCI device */ | |
1837 | int hci_suspend_dev(struct hci_dev *hdev) | |
1838 | { | |
1839 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1840 | return 0; | |
1841 | } | |
1842 | EXPORT_SYMBOL(hci_suspend_dev); | |
1843 | ||
1844 | /* Resume HCI device */ | |
1845 | int hci_resume_dev(struct hci_dev *hdev) | |
1846 | { | |
1847 | hci_notify(hdev, HCI_DEV_RESUME); | |
1848 | return 0; | |
1849 | } | |
1850 | EXPORT_SYMBOL(hci_resume_dev); | |
1851 | ||
76bca880 MH |
1852 | /* Receive frame from HCI drivers */ |
1853 | int hci_recv_frame(struct sk_buff *skb) | |
1854 | { | |
1855 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1856 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
a8c5fb1a | 1857 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
1858 | kfree_skb(skb); |
1859 | return -ENXIO; | |
1860 | } | |
1861 | ||
1862 | /* Incomming skb */ | |
1863 | bt_cb(skb)->incoming = 1; | |
1864 | ||
1865 | /* Time stamp */ | |
1866 | __net_timestamp(skb); | |
1867 | ||
76bca880 | 1868 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 1869 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 1870 | |
76bca880 MH |
1871 | return 0; |
1872 | } | |
1873 | EXPORT_SYMBOL(hci_recv_frame); | |
1874 | ||
33e882a5 | 1875 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 1876 | int count, __u8 index) |
33e882a5 SS |
1877 | { |
1878 | int len = 0; | |
1879 | int hlen = 0; | |
1880 | int remain = count; | |
1881 | struct sk_buff *skb; | |
1882 | struct bt_skb_cb *scb; | |
1883 | ||
1884 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 1885 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
1886 | return -EILSEQ; |
1887 | ||
1888 | skb = hdev->reassembly[index]; | |
1889 | ||
1890 | if (!skb) { | |
1891 | switch (type) { | |
1892 | case HCI_ACLDATA_PKT: | |
1893 | len = HCI_MAX_FRAME_SIZE; | |
1894 | hlen = HCI_ACL_HDR_SIZE; | |
1895 | break; | |
1896 | case HCI_EVENT_PKT: | |
1897 | len = HCI_MAX_EVENT_SIZE; | |
1898 | hlen = HCI_EVENT_HDR_SIZE; | |
1899 | break; | |
1900 | case HCI_SCODATA_PKT: | |
1901 | len = HCI_MAX_SCO_SIZE; | |
1902 | hlen = HCI_SCO_HDR_SIZE; | |
1903 | break; | |
1904 | } | |
1905 | ||
1e429f38 | 1906 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
1907 | if (!skb) |
1908 | return -ENOMEM; | |
1909 | ||
1910 | scb = (void *) skb->cb; | |
1911 | scb->expect = hlen; | |
1912 | scb->pkt_type = type; | |
1913 | ||
1914 | skb->dev = (void *) hdev; | |
1915 | hdev->reassembly[index] = skb; | |
1916 | } | |
1917 | ||
1918 | while (count) { | |
1919 | scb = (void *) skb->cb; | |
89bb46d0 | 1920 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
1921 | |
1922 | memcpy(skb_put(skb, len), data, len); | |
1923 | ||
1924 | count -= len; | |
1925 | data += len; | |
1926 | scb->expect -= len; | |
1927 | remain = count; | |
1928 | ||
1929 | switch (type) { | |
1930 | case HCI_EVENT_PKT: | |
1931 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1932 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1933 | scb->expect = h->plen; | |
1934 | ||
1935 | if (skb_tailroom(skb) < scb->expect) { | |
1936 | kfree_skb(skb); | |
1937 | hdev->reassembly[index] = NULL; | |
1938 | return -ENOMEM; | |
1939 | } | |
1940 | } | |
1941 | break; | |
1942 | ||
1943 | case HCI_ACLDATA_PKT: | |
1944 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1945 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1946 | scb->expect = __le16_to_cpu(h->dlen); | |
1947 | ||
1948 | if (skb_tailroom(skb) < scb->expect) { | |
1949 | kfree_skb(skb); | |
1950 | hdev->reassembly[index] = NULL; | |
1951 | return -ENOMEM; | |
1952 | } | |
1953 | } | |
1954 | break; | |
1955 | ||
1956 | case HCI_SCODATA_PKT: | |
1957 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1958 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1959 | scb->expect = h->dlen; | |
1960 | ||
1961 | if (skb_tailroom(skb) < scb->expect) { | |
1962 | kfree_skb(skb); | |
1963 | hdev->reassembly[index] = NULL; | |
1964 | return -ENOMEM; | |
1965 | } | |
1966 | } | |
1967 | break; | |
1968 | } | |
1969 | ||
1970 | if (scb->expect == 0) { | |
1971 | /* Complete frame */ | |
1972 | ||
1973 | bt_cb(skb)->pkt_type = type; | |
1974 | hci_recv_frame(skb); | |
1975 | ||
1976 | hdev->reassembly[index] = NULL; | |
1977 | return remain; | |
1978 | } | |
1979 | } | |
1980 | ||
1981 | return remain; | |
1982 | } | |
1983 | ||
ef222013 MH |
1984 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1985 | { | |
f39a3c06 SS |
1986 | int rem = 0; |
1987 | ||
ef222013 MH |
1988 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1989 | return -EILSEQ; | |
1990 | ||
da5f6c37 | 1991 | while (count) { |
1e429f38 | 1992 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
1993 | if (rem < 0) |
1994 | return rem; | |
ef222013 | 1995 | |
f39a3c06 SS |
1996 | data += (count - rem); |
1997 | count = rem; | |
f81c6224 | 1998 | } |
ef222013 | 1999 | |
f39a3c06 | 2000 | return rem; |
ef222013 MH |
2001 | } |
2002 | EXPORT_SYMBOL(hci_recv_fragment); | |
2003 | ||
99811510 SS |
2004 | #define STREAM_REASSEMBLY 0 |
2005 | ||
2006 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2007 | { | |
2008 | int type; | |
2009 | int rem = 0; | |
2010 | ||
da5f6c37 | 2011 | while (count) { |
99811510 SS |
2012 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2013 | ||
2014 | if (!skb) { | |
2015 | struct { char type; } *pkt; | |
2016 | ||
2017 | /* Start of the frame */ | |
2018 | pkt = data; | |
2019 | type = pkt->type; | |
2020 | ||
2021 | data++; | |
2022 | count--; | |
2023 | } else | |
2024 | type = bt_cb(skb)->pkt_type; | |
2025 | ||
1e429f38 | 2026 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2027 | STREAM_REASSEMBLY); |
99811510 SS |
2028 | if (rem < 0) |
2029 | return rem; | |
2030 | ||
2031 | data += (count - rem); | |
2032 | count = rem; | |
f81c6224 | 2033 | } |
99811510 SS |
2034 | |
2035 | return rem; | |
2036 | } | |
2037 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2038 | ||
1da177e4 LT |
2039 | /* ---- Interface to upper protocols ---- */ |
2040 | ||
1da177e4 LT |
2041 | int hci_register_cb(struct hci_cb *cb) |
2042 | { | |
2043 | BT_DBG("%p name %s", cb, cb->name); | |
2044 | ||
f20d09d5 | 2045 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2046 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2047 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2048 | |
2049 | return 0; | |
2050 | } | |
2051 | EXPORT_SYMBOL(hci_register_cb); | |
2052 | ||
2053 | int hci_unregister_cb(struct hci_cb *cb) | |
2054 | { | |
2055 | BT_DBG("%p name %s", cb, cb->name); | |
2056 | ||
f20d09d5 | 2057 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2058 | list_del(&cb->list); |
f20d09d5 | 2059 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2060 | |
2061 | return 0; | |
2062 | } | |
2063 | EXPORT_SYMBOL(hci_unregister_cb); | |
2064 | ||
2065 | static int hci_send_frame(struct sk_buff *skb) | |
2066 | { | |
2067 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
2068 | ||
2069 | if (!hdev) { | |
2070 | kfree_skb(skb); | |
2071 | return -ENODEV; | |
2072 | } | |
2073 | ||
0d48d939 | 2074 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2075 | |
cd82e61c MH |
2076 | /* Time stamp */ |
2077 | __net_timestamp(skb); | |
1da177e4 | 2078 | |
cd82e61c MH |
2079 | /* Send copy to monitor */ |
2080 | hci_send_to_monitor(hdev, skb); | |
2081 | ||
2082 | if (atomic_read(&hdev->promisc)) { | |
2083 | /* Send copy to the sockets */ | |
470fe1b5 | 2084 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2085 | } |
2086 | ||
2087 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2088 | skb_orphan(skb); | |
2089 | ||
2090 | return hdev->send(skb); | |
2091 | } | |
2092 | ||
2093 | /* Send HCI command */ | |
a9de9248 | 2094 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
2095 | { |
2096 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2097 | struct hci_command_hdr *hdr; | |
2098 | struct sk_buff *skb; | |
2099 | ||
a9de9248 | 2100 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
2101 | |
2102 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
2103 | if (!skb) { | |
ef222013 | 2104 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
2105 | return -ENOMEM; |
2106 | } | |
2107 | ||
2108 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2109 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2110 | hdr->plen = plen; |
2111 | ||
2112 | if (plen) | |
2113 | memcpy(skb_put(skb, plen), param, plen); | |
2114 | ||
2115 | BT_DBG("skb len %d", skb->len); | |
2116 | ||
0d48d939 | 2117 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 2118 | skb->dev = (void *) hdev; |
c78ae283 | 2119 | |
a5040efa JH |
2120 | if (test_bit(HCI_INIT, &hdev->flags)) |
2121 | hdev->init_last_cmd = opcode; | |
2122 | ||
1da177e4 | 2123 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2124 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2125 | |
2126 | return 0; | |
2127 | } | |
1da177e4 LT |
2128 | |
2129 | /* Get data from the previously sent command */ | |
a9de9248 | 2130 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2131 | { |
2132 | struct hci_command_hdr *hdr; | |
2133 | ||
2134 | if (!hdev->sent_cmd) | |
2135 | return NULL; | |
2136 | ||
2137 | hdr = (void *) hdev->sent_cmd->data; | |
2138 | ||
a9de9248 | 2139 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2140 | return NULL; |
2141 | ||
a9de9248 | 2142 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
1da177e4 LT |
2143 | |
2144 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2145 | } | |
2146 | ||
2147 | /* Send ACL data */ | |
2148 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2149 | { | |
2150 | struct hci_acl_hdr *hdr; | |
2151 | int len = skb->len; | |
2152 | ||
badff6d0 ACM |
2153 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2154 | skb_reset_transport_header(skb); | |
9c70220b | 2155 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2156 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2157 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2158 | } |
2159 | ||
73d80deb | 2160 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
a8c5fb1a | 2161 | struct sk_buff *skb, __u16 flags) |
1da177e4 LT |
2162 | { |
2163 | struct hci_dev *hdev = conn->hdev; | |
2164 | struct sk_buff *list; | |
2165 | ||
087bfd99 GP |
2166 | skb->len = skb_headlen(skb); |
2167 | skb->data_len = 0; | |
2168 | ||
2169 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
2170 | hci_add_acl_hdr(skb, conn->handle, flags); | |
2171 | ||
70f23020 AE |
2172 | list = skb_shinfo(skb)->frag_list; |
2173 | if (!list) { | |
1da177e4 LT |
2174 | /* Non fragmented */ |
2175 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
2176 | ||
73d80deb | 2177 | skb_queue_tail(queue, skb); |
1da177e4 LT |
2178 | } else { |
2179 | /* Fragmented */ | |
2180 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2181 | ||
2182 | skb_shinfo(skb)->frag_list = NULL; | |
2183 | ||
2184 | /* Queue all fragments atomically */ | |
af3e6359 | 2185 | spin_lock(&queue->lock); |
1da177e4 | 2186 | |
73d80deb | 2187 | __skb_queue_tail(queue, skb); |
e702112f AE |
2188 | |
2189 | flags &= ~ACL_START; | |
2190 | flags |= ACL_CONT; | |
1da177e4 LT |
2191 | do { |
2192 | skb = list; list = list->next; | |
8e87d142 | 2193 | |
1da177e4 | 2194 | skb->dev = (void *) hdev; |
0d48d939 | 2195 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 2196 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
2197 | |
2198 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
2199 | ||
73d80deb | 2200 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
2201 | } while (list); |
2202 | ||
af3e6359 | 2203 | spin_unlock(&queue->lock); |
1da177e4 | 2204 | } |
73d80deb LAD |
2205 | } |
2206 | ||
2207 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
2208 | { | |
2209 | struct hci_conn *conn = chan->conn; | |
2210 | struct hci_dev *hdev = conn->hdev; | |
2211 | ||
2212 | BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); | |
2213 | ||
2214 | skb->dev = (void *) hdev; | |
73d80deb LAD |
2215 | |
2216 | hci_queue_acl(conn, &chan->data_q, skb, flags); | |
1da177e4 | 2217 | |
3eff45ea | 2218 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2219 | } |
2220 | EXPORT_SYMBOL(hci_send_acl); | |
2221 | ||
2222 | /* Send SCO data */ | |
0d861d8b | 2223 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
2224 | { |
2225 | struct hci_dev *hdev = conn->hdev; | |
2226 | struct hci_sco_hdr hdr; | |
2227 | ||
2228 | BT_DBG("%s len %d", hdev->name, skb->len); | |
2229 | ||
aca3192c | 2230 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
2231 | hdr.dlen = skb->len; |
2232 | ||
badff6d0 ACM |
2233 | skb_push(skb, HCI_SCO_HDR_SIZE); |
2234 | skb_reset_transport_header(skb); | |
9c70220b | 2235 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
2236 | |
2237 | skb->dev = (void *) hdev; | |
0d48d939 | 2238 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 2239 | |
1da177e4 | 2240 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 2241 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
2242 | } |
2243 | EXPORT_SYMBOL(hci_send_sco); | |
2244 | ||
2245 | /* ---- HCI TX task (outgoing data) ---- */ | |
2246 | ||
2247 | /* HCI Connection scheduler */ | |
a8c5fb1a GP |
2248 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
2249 | int *quote) | |
1da177e4 LT |
2250 | { |
2251 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2252 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 2253 | unsigned int num = 0, min = ~0; |
1da177e4 | 2254 | |
8e87d142 | 2255 | /* We don't have to lock device here. Connections are always |
1da177e4 | 2256 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
2257 | |
2258 | rcu_read_lock(); | |
2259 | ||
2260 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 2261 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 2262 | continue; |
769be974 MH |
2263 | |
2264 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
2265 | continue; | |
2266 | ||
1da177e4 LT |
2267 | num++; |
2268 | ||
2269 | if (c->sent < min) { | |
2270 | min = c->sent; | |
2271 | conn = c; | |
2272 | } | |
52087a79 LAD |
2273 | |
2274 | if (hci_conn_num(hdev, type) == num) | |
2275 | break; | |
1da177e4 LT |
2276 | } |
2277 | ||
bf4c6325 GP |
2278 | rcu_read_unlock(); |
2279 | ||
1da177e4 | 2280 | if (conn) { |
6ed58ec5 VT |
2281 | int cnt, q; |
2282 | ||
2283 | switch (conn->type) { | |
2284 | case ACL_LINK: | |
2285 | cnt = hdev->acl_cnt; | |
2286 | break; | |
2287 | case SCO_LINK: | |
2288 | case ESCO_LINK: | |
2289 | cnt = hdev->sco_cnt; | |
2290 | break; | |
2291 | case LE_LINK: | |
2292 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2293 | break; | |
2294 | default: | |
2295 | cnt = 0; | |
2296 | BT_ERR("Unknown link type"); | |
2297 | } | |
2298 | ||
2299 | q = cnt / num; | |
1da177e4 LT |
2300 | *quote = q ? q : 1; |
2301 | } else | |
2302 | *quote = 0; | |
2303 | ||
2304 | BT_DBG("conn %p quote %d", conn, *quote); | |
2305 | return conn; | |
2306 | } | |
2307 | ||
bae1f5d9 | 2308 | static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
2309 | { |
2310 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 2311 | struct hci_conn *c; |
1da177e4 | 2312 | |
bae1f5d9 | 2313 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 2314 | |
bf4c6325 GP |
2315 | rcu_read_lock(); |
2316 | ||
1da177e4 | 2317 | /* Kill stalled connections */ |
bf4c6325 | 2318 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 VT |
2319 | if (c->type == type && c->sent) { |
2320 | BT_ERR("%s killing stalled connection %s", | |
a8c5fb1a | 2321 | hdev->name, batostr(&c->dst)); |
1da177e4 LT |
2322 | hci_acl_disconn(c, 0x13); |
2323 | } | |
2324 | } | |
bf4c6325 GP |
2325 | |
2326 | rcu_read_unlock(); | |
1da177e4 LT |
2327 | } |
2328 | ||
73d80deb | 2329 | static inline struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
a8c5fb1a | 2330 | int *quote) |
1da177e4 | 2331 | { |
73d80deb LAD |
2332 | struct hci_conn_hash *h = &hdev->conn_hash; |
2333 | struct hci_chan *chan = NULL; | |
abc5de8f | 2334 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 2335 | struct hci_conn *conn; |
73d80deb LAD |
2336 | int cnt, q, conn_num = 0; |
2337 | ||
2338 | BT_DBG("%s", hdev->name); | |
2339 | ||
bf4c6325 GP |
2340 | rcu_read_lock(); |
2341 | ||
2342 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
2343 | struct hci_chan *tmp; |
2344 | ||
2345 | if (conn->type != type) | |
2346 | continue; | |
2347 | ||
2348 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2349 | continue; | |
2350 | ||
2351 | conn_num++; | |
2352 | ||
8192edef | 2353 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
2354 | struct sk_buff *skb; |
2355 | ||
2356 | if (skb_queue_empty(&tmp->data_q)) | |
2357 | continue; | |
2358 | ||
2359 | skb = skb_peek(&tmp->data_q); | |
2360 | if (skb->priority < cur_prio) | |
2361 | continue; | |
2362 | ||
2363 | if (skb->priority > cur_prio) { | |
2364 | num = 0; | |
2365 | min = ~0; | |
2366 | cur_prio = skb->priority; | |
2367 | } | |
2368 | ||
2369 | num++; | |
2370 | ||
2371 | if (conn->sent < min) { | |
2372 | min = conn->sent; | |
2373 | chan = tmp; | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | if (hci_conn_num(hdev, type) == conn_num) | |
2378 | break; | |
2379 | } | |
2380 | ||
bf4c6325 GP |
2381 | rcu_read_unlock(); |
2382 | ||
73d80deb LAD |
2383 | if (!chan) |
2384 | return NULL; | |
2385 | ||
2386 | switch (chan->conn->type) { | |
2387 | case ACL_LINK: | |
2388 | cnt = hdev->acl_cnt; | |
2389 | break; | |
2390 | case SCO_LINK: | |
2391 | case ESCO_LINK: | |
2392 | cnt = hdev->sco_cnt; | |
2393 | break; | |
2394 | case LE_LINK: | |
2395 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
2396 | break; | |
2397 | default: | |
2398 | cnt = 0; | |
2399 | BT_ERR("Unknown link type"); | |
2400 | } | |
2401 | ||
2402 | q = cnt / num; | |
2403 | *quote = q ? q : 1; | |
2404 | BT_DBG("chan %p quote %d", chan, *quote); | |
2405 | return chan; | |
2406 | } | |
2407 | ||
02b20f0b LAD |
2408 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
2409 | { | |
2410 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2411 | struct hci_conn *conn; | |
2412 | int num = 0; | |
2413 | ||
2414 | BT_DBG("%s", hdev->name); | |
2415 | ||
bf4c6325 GP |
2416 | rcu_read_lock(); |
2417 | ||
2418 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
2419 | struct hci_chan *chan; |
2420 | ||
2421 | if (conn->type != type) | |
2422 | continue; | |
2423 | ||
2424 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2425 | continue; | |
2426 | ||
2427 | num++; | |
2428 | ||
8192edef | 2429 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
2430 | struct sk_buff *skb; |
2431 | ||
2432 | if (chan->sent) { | |
2433 | chan->sent = 0; | |
2434 | continue; | |
2435 | } | |
2436 | ||
2437 | if (skb_queue_empty(&chan->data_q)) | |
2438 | continue; | |
2439 | ||
2440 | skb = skb_peek(&chan->data_q); | |
2441 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
2442 | continue; | |
2443 | ||
2444 | skb->priority = HCI_PRIO_MAX - 1; | |
2445 | ||
2446 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 2447 | skb->priority); |
02b20f0b LAD |
2448 | } |
2449 | ||
2450 | if (hci_conn_num(hdev, type) == num) | |
2451 | break; | |
2452 | } | |
bf4c6325 GP |
2453 | |
2454 | rcu_read_unlock(); | |
2455 | ||
02b20f0b LAD |
2456 | } |
2457 | ||
b71d385a AE |
2458 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
2459 | { | |
2460 | /* Calculate count of blocks used by this packet */ | |
2461 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
2462 | } | |
2463 | ||
63d2bc1b | 2464 | static inline void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 2465 | { |
1da177e4 LT |
2466 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2467 | /* ACL tx timeout must be longer than maximum | |
2468 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 2469 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
a8c5fb1a | 2470 | msecs_to_jiffies(HCI_ACL_TX_TIMEOUT))) |
bae1f5d9 | 2471 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 2472 | } |
63d2bc1b | 2473 | } |
1da177e4 | 2474 | |
63d2bc1b AE |
2475 | static inline void hci_sched_acl_pkt(struct hci_dev *hdev) |
2476 | { | |
2477 | unsigned int cnt = hdev->acl_cnt; | |
2478 | struct hci_chan *chan; | |
2479 | struct sk_buff *skb; | |
2480 | int quote; | |
2481 | ||
2482 | __check_timeout(hdev, cnt); | |
04837f64 | 2483 | |
73d80deb | 2484 | while (hdev->acl_cnt && |
a8c5fb1a | 2485 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
2486 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2487 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2488 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2489 | skb->len, skb->priority); |
73d80deb | 2490 | |
ec1cce24 LAD |
2491 | /* Stop if priority has changed */ |
2492 | if (skb->priority < priority) | |
2493 | break; | |
2494 | ||
2495 | skb = skb_dequeue(&chan->data_q); | |
2496 | ||
73d80deb | 2497 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 2498 | bt_cb(skb)->force_active); |
04837f64 | 2499 | |
1da177e4 LT |
2500 | hci_send_frame(skb); |
2501 | hdev->acl_last_tx = jiffies; | |
2502 | ||
2503 | hdev->acl_cnt--; | |
73d80deb LAD |
2504 | chan->sent++; |
2505 | chan->conn->sent++; | |
1da177e4 LT |
2506 | } |
2507 | } | |
02b20f0b LAD |
2508 | |
2509 | if (cnt != hdev->acl_cnt) | |
2510 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
2511 | } |
2512 | ||
b71d385a AE |
2513 | static inline void hci_sched_acl_blk(struct hci_dev *hdev) |
2514 | { | |
63d2bc1b | 2515 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
2516 | struct hci_chan *chan; |
2517 | struct sk_buff *skb; | |
2518 | int quote; | |
b71d385a | 2519 | |
63d2bc1b | 2520 | __check_timeout(hdev, cnt); |
b71d385a AE |
2521 | |
2522 | while (hdev->block_cnt > 0 && | |
a8c5fb1a | 2523 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
b71d385a AE |
2524 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2525 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
2526 | int blocks; | |
2527 | ||
2528 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 2529 | skb->len, skb->priority); |
b71d385a AE |
2530 | |
2531 | /* Stop if priority has changed */ | |
2532 | if (skb->priority < priority) | |
2533 | break; | |
2534 | ||
2535 | skb = skb_dequeue(&chan->data_q); | |
2536 | ||
2537 | blocks = __get_blocks(hdev, skb); | |
2538 | if (blocks > hdev->block_cnt) | |
2539 | return; | |
2540 | ||
2541 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 2542 | bt_cb(skb)->force_active); |
b71d385a AE |
2543 | |
2544 | hci_send_frame(skb); | |
2545 | hdev->acl_last_tx = jiffies; | |
2546 | ||
2547 | hdev->block_cnt -= blocks; | |
2548 | quote -= blocks; | |
2549 | ||
2550 | chan->sent += blocks; | |
2551 | chan->conn->sent += blocks; | |
2552 | } | |
2553 | } | |
2554 | ||
2555 | if (cnt != hdev->block_cnt) | |
2556 | hci_prio_recalculate(hdev, ACL_LINK); | |
2557 | } | |
2558 | ||
2559 | static inline void hci_sched_acl(struct hci_dev *hdev) | |
2560 | { | |
2561 | BT_DBG("%s", hdev->name); | |
2562 | ||
2563 | if (!hci_conn_num(hdev, ACL_LINK)) | |
2564 | return; | |
2565 | ||
2566 | switch (hdev->flow_ctl_mode) { | |
2567 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
2568 | hci_sched_acl_pkt(hdev); | |
2569 | break; | |
2570 | ||
2571 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
2572 | hci_sched_acl_blk(hdev); | |
2573 | break; | |
2574 | } | |
2575 | } | |
2576 | ||
1da177e4 LT |
2577 | /* Schedule SCO */ |
2578 | static inline void hci_sched_sco(struct hci_dev *hdev) | |
2579 | { | |
2580 | struct hci_conn *conn; | |
2581 | struct sk_buff *skb; | |
2582 | int quote; | |
2583 | ||
2584 | BT_DBG("%s", hdev->name); | |
2585 | ||
52087a79 LAD |
2586 | if (!hci_conn_num(hdev, SCO_LINK)) |
2587 | return; | |
2588 | ||
1da177e4 LT |
2589 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
2590 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2591 | BT_DBG("skb %p len %d", skb, skb->len); | |
2592 | hci_send_frame(skb); | |
2593 | ||
2594 | conn->sent++; | |
2595 | if (conn->sent == ~0) | |
2596 | conn->sent = 0; | |
2597 | } | |
2598 | } | |
2599 | } | |
2600 | ||
b6a0dc82 MH |
2601 | static inline void hci_sched_esco(struct hci_dev *hdev) |
2602 | { | |
2603 | struct hci_conn *conn; | |
2604 | struct sk_buff *skb; | |
2605 | int quote; | |
2606 | ||
2607 | BT_DBG("%s", hdev->name); | |
2608 | ||
52087a79 LAD |
2609 | if (!hci_conn_num(hdev, ESCO_LINK)) |
2610 | return; | |
2611 | ||
b6a0dc82 MH |
2612 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
2613 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
2614 | BT_DBG("skb %p len %d", skb, skb->len); | |
2615 | hci_send_frame(skb); | |
2616 | ||
2617 | conn->sent++; | |
2618 | if (conn->sent == ~0) | |
2619 | conn->sent = 0; | |
2620 | } | |
2621 | } | |
2622 | } | |
2623 | ||
6ed58ec5 VT |
2624 | static inline void hci_sched_le(struct hci_dev *hdev) |
2625 | { | |
73d80deb | 2626 | struct hci_chan *chan; |
6ed58ec5 | 2627 | struct sk_buff *skb; |
02b20f0b | 2628 | int quote, cnt, tmp; |
6ed58ec5 VT |
2629 | |
2630 | BT_DBG("%s", hdev->name); | |
2631 | ||
52087a79 LAD |
2632 | if (!hci_conn_num(hdev, LE_LINK)) |
2633 | return; | |
2634 | ||
6ed58ec5 VT |
2635 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
2636 | /* LE tx timeout must be longer than maximum | |
2637 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 2638 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 2639 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 2640 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
2641 | } |
2642 | ||
2643 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 2644 | tmp = cnt; |
73d80deb | 2645 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
2646 | u32 priority = (skb_peek(&chan->data_q))->priority; |
2647 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 2648 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 2649 | skb->len, skb->priority); |
6ed58ec5 | 2650 | |
ec1cce24 LAD |
2651 | /* Stop if priority has changed */ |
2652 | if (skb->priority < priority) | |
2653 | break; | |
2654 | ||
2655 | skb = skb_dequeue(&chan->data_q); | |
2656 | ||
6ed58ec5 VT |
2657 | hci_send_frame(skb); |
2658 | hdev->le_last_tx = jiffies; | |
2659 | ||
2660 | cnt--; | |
73d80deb LAD |
2661 | chan->sent++; |
2662 | chan->conn->sent++; | |
6ed58ec5 VT |
2663 | } |
2664 | } | |
73d80deb | 2665 | |
6ed58ec5 VT |
2666 | if (hdev->le_pkts) |
2667 | hdev->le_cnt = cnt; | |
2668 | else | |
2669 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
2670 | |
2671 | if (cnt != tmp) | |
2672 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
2673 | } |
2674 | ||
3eff45ea | 2675 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 2676 | { |
3eff45ea | 2677 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
2678 | struct sk_buff *skb; |
2679 | ||
6ed58ec5 | 2680 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 2681 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 LT |
2682 | |
2683 | /* Schedule queues and send stuff to HCI driver */ | |
2684 | ||
2685 | hci_sched_acl(hdev); | |
2686 | ||
2687 | hci_sched_sco(hdev); | |
2688 | ||
b6a0dc82 MH |
2689 | hci_sched_esco(hdev); |
2690 | ||
6ed58ec5 VT |
2691 | hci_sched_le(hdev); |
2692 | ||
1da177e4 LT |
2693 | /* Send next queued raw (unknown type) packet */ |
2694 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
2695 | hci_send_frame(skb); | |
1da177e4 LT |
2696 | } |
2697 | ||
25985edc | 2698 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
2699 | |
2700 | /* ACL data packet */ | |
2701 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2702 | { | |
2703 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
2704 | struct hci_conn *conn; | |
2705 | __u16 handle, flags; | |
2706 | ||
2707 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
2708 | ||
2709 | handle = __le16_to_cpu(hdr->handle); | |
2710 | flags = hci_flags(handle); | |
2711 | handle = hci_handle(handle); | |
2712 | ||
a8c5fb1a GP |
2713 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, |
2714 | handle, flags); | |
1da177e4 LT |
2715 | |
2716 | hdev->stat.acl_rx++; | |
2717 | ||
2718 | hci_dev_lock(hdev); | |
2719 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2720 | hci_dev_unlock(hdev); | |
8e87d142 | 2721 | |
1da177e4 | 2722 | if (conn) { |
65983fc7 | 2723 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 2724 | |
671267bf JH |
2725 | hci_dev_lock(hdev); |
2726 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && | |
2727 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) | |
2728 | mgmt_device_connected(hdev, &conn->dst, conn->type, | |
2729 | conn->dst_type, 0, NULL, 0, | |
2730 | conn->dev_class); | |
2731 | hci_dev_unlock(hdev); | |
2732 | ||
1da177e4 | 2733 | /* Send to upper protocol */ |
686ebf28 UF |
2734 | l2cap_recv_acldata(conn, skb, flags); |
2735 | return; | |
1da177e4 | 2736 | } else { |
8e87d142 | 2737 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 2738 | hdev->name, handle); |
1da177e4 LT |
2739 | } |
2740 | ||
2741 | kfree_skb(skb); | |
2742 | } | |
2743 | ||
2744 | /* SCO data packet */ | |
2745 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
2746 | { | |
2747 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
2748 | struct hci_conn *conn; | |
2749 | __u16 handle; | |
2750 | ||
2751 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
2752 | ||
2753 | handle = __le16_to_cpu(hdr->handle); | |
2754 | ||
2755 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); | |
2756 | ||
2757 | hdev->stat.sco_rx++; | |
2758 | ||
2759 | hci_dev_lock(hdev); | |
2760 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
2761 | hci_dev_unlock(hdev); | |
2762 | ||
2763 | if (conn) { | |
1da177e4 | 2764 | /* Send to upper protocol */ |
686ebf28 UF |
2765 | sco_recv_scodata(conn, skb); |
2766 | return; | |
1da177e4 | 2767 | } else { |
8e87d142 | 2768 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 2769 | hdev->name, handle); |
1da177e4 LT |
2770 | } |
2771 | ||
2772 | kfree_skb(skb); | |
2773 | } | |
2774 | ||
b78752cc | 2775 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 2776 | { |
b78752cc | 2777 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
2778 | struct sk_buff *skb; |
2779 | ||
2780 | BT_DBG("%s", hdev->name); | |
2781 | ||
1da177e4 | 2782 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
2783 | /* Send copy to monitor */ |
2784 | hci_send_to_monitor(hdev, skb); | |
2785 | ||
1da177e4 LT |
2786 | if (atomic_read(&hdev->promisc)) { |
2787 | /* Send copy to the sockets */ | |
470fe1b5 | 2788 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2789 | } |
2790 | ||
2791 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
2792 | kfree_skb(skb); | |
2793 | continue; | |
2794 | } | |
2795 | ||
2796 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
2797 | /* Don't process data packets in this states. */ | |
0d48d939 | 2798 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
2799 | case HCI_ACLDATA_PKT: |
2800 | case HCI_SCODATA_PKT: | |
2801 | kfree_skb(skb); | |
2802 | continue; | |
3ff50b79 | 2803 | } |
1da177e4 LT |
2804 | } |
2805 | ||
2806 | /* Process frame */ | |
0d48d939 | 2807 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 2808 | case HCI_EVENT_PKT: |
b78752cc | 2809 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
2810 | hci_event_packet(hdev, skb); |
2811 | break; | |
2812 | ||
2813 | case HCI_ACLDATA_PKT: | |
2814 | BT_DBG("%s ACL data packet", hdev->name); | |
2815 | hci_acldata_packet(hdev, skb); | |
2816 | break; | |
2817 | ||
2818 | case HCI_SCODATA_PKT: | |
2819 | BT_DBG("%s SCO data packet", hdev->name); | |
2820 | hci_scodata_packet(hdev, skb); | |
2821 | break; | |
2822 | ||
2823 | default: | |
2824 | kfree_skb(skb); | |
2825 | break; | |
2826 | } | |
2827 | } | |
1da177e4 LT |
2828 | } |
2829 | ||
c347b765 | 2830 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 2831 | { |
c347b765 | 2832 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
2833 | struct sk_buff *skb; |
2834 | ||
2835 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); | |
2836 | ||
1da177e4 | 2837 | /* Send queued commands */ |
5a08ecce AE |
2838 | if (atomic_read(&hdev->cmd_cnt)) { |
2839 | skb = skb_dequeue(&hdev->cmd_q); | |
2840 | if (!skb) | |
2841 | return; | |
2842 | ||
7585b97a | 2843 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 2844 | |
70f23020 AE |
2845 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
2846 | if (hdev->sent_cmd) { | |
1da177e4 LT |
2847 | atomic_dec(&hdev->cmd_cnt); |
2848 | hci_send_frame(skb); | |
7bdb8a5c SJ |
2849 | if (test_bit(HCI_RESET, &hdev->flags)) |
2850 | del_timer(&hdev->cmd_timer); | |
2851 | else | |
2852 | mod_timer(&hdev->cmd_timer, | |
6bd32326 | 2853 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
1da177e4 LT |
2854 | } else { |
2855 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 2856 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2857 | } |
2858 | } | |
2859 | } | |
2519a1fc AG |
2860 | |
2861 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) | |
2862 | { | |
2863 | /* General inquiry access code (GIAC) */ | |
2864 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2865 | struct hci_cp_inquiry cp; | |
2866 | ||
2867 | BT_DBG("%s", hdev->name); | |
2868 | ||
2869 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2870 | return -EINPROGRESS; | |
2871 | ||
4663262c JH |
2872 | inquiry_cache_flush(hdev); |
2873 | ||
2519a1fc AG |
2874 | memset(&cp, 0, sizeof(cp)); |
2875 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2876 | cp.length = length; | |
2877 | ||
2878 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
2879 | } | |
023d5049 AG |
2880 | |
2881 | int hci_cancel_inquiry(struct hci_dev *hdev) | |
2882 | { | |
2883 | BT_DBG("%s", hdev->name); | |
2884 | ||
2885 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) | |
7537e5c3 | 2886 | return -EALREADY; |
023d5049 AG |
2887 | |
2888 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
2889 | } | |
31f7956c AG |
2890 | |
2891 | u8 bdaddr_to_le(u8 bdaddr_type) | |
2892 | { | |
2893 | switch (bdaddr_type) { | |
2894 | case BDADDR_LE_PUBLIC: | |
2895 | return ADDR_LE_DEV_PUBLIC; | |
2896 | ||
2897 | default: | |
2898 | /* Fallback to LE Random address type */ | |
2899 | return ADDR_LE_DEV_RANDOM; | |
2900 | } | |
2901 | } |