Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI core. */ | |
26 | ||
82453021 | 27 | #include <linux/jiffies.h> |
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/kmod.h> | |
30 | ||
31 | #include <linux/types.h> | |
32 | #include <linux/errno.h> | |
33 | #include <linux/kernel.h> | |
1da177e4 LT |
34 | #include <linux/sched.h> |
35 | #include <linux/slab.h> | |
36 | #include <linux/poll.h> | |
37 | #include <linux/fcntl.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/skbuff.h> | |
f48fd9c8 | 40 | #include <linux/workqueue.h> |
1da177e4 LT |
41 | #include <linux/interrupt.h> |
42 | #include <linux/notifier.h> | |
611b30f7 | 43 | #include <linux/rfkill.h> |
1da177e4 LT |
44 | #include <net/sock.h> |
45 | ||
46 | #include <asm/system.h> | |
70f23020 | 47 | #include <linux/uaccess.h> |
1da177e4 LT |
48 | #include <asm/unaligned.h> |
49 | ||
50 | #include <net/bluetooth/bluetooth.h> | |
51 | #include <net/bluetooth/hci_core.h> | |
52 | ||
1da177e4 LT |
53 | static void hci_cmd_task(unsigned long arg); |
54 | static void hci_rx_task(unsigned long arg); | |
55 | static void hci_tx_task(unsigned long arg); | |
56 | static void hci_notify(struct hci_dev *hdev, int event); | |
57 | ||
58 | static DEFINE_RWLOCK(hci_task_lock); | |
59 | ||
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 | ||
68 | /* HCI protocols */ | |
69 | #define HCI_MAX_PROTO 2 | |
70 | struct hci_proto *hci_proto[HCI_MAX_PROTO]; | |
71 | ||
72 | /* HCI notifiers list */ | |
e041c683 | 73 | static ATOMIC_NOTIFIER_HEAD(hci_notifier); |
1da177e4 LT |
74 | |
75 | /* ---- HCI notifications ---- */ | |
76 | ||
77 | int hci_register_notifier(struct notifier_block *nb) | |
78 | { | |
e041c683 | 79 | return atomic_notifier_chain_register(&hci_notifier, nb); |
1da177e4 LT |
80 | } |
81 | ||
82 | int hci_unregister_notifier(struct notifier_block *nb) | |
83 | { | |
e041c683 | 84 | return atomic_notifier_chain_unregister(&hci_notifier, nb); |
1da177e4 LT |
85 | } |
86 | ||
6516455d | 87 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 88 | { |
e041c683 | 89 | atomic_notifier_call_chain(&hci_notifier, event, hdev); |
1da177e4 LT |
90 | } |
91 | ||
92 | /* ---- HCI requests ---- */ | |
93 | ||
94 | void hci_req_complete(struct hci_dev *hdev, int result) | |
95 | { | |
96 | BT_DBG("%s result 0x%2.2x", hdev->name, result); | |
97 | ||
98 | if (hdev->req_status == HCI_REQ_PEND) { | |
99 | hdev->req_result = result; | |
100 | hdev->req_status = HCI_REQ_DONE; | |
101 | wake_up_interruptible(&hdev->req_wait_q); | |
102 | } | |
103 | } | |
104 | ||
105 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
106 | { | |
107 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
108 | ||
109 | if (hdev->req_status == HCI_REQ_PEND) { | |
110 | hdev->req_result = err; | |
111 | hdev->req_status = HCI_REQ_CANCELED; | |
112 | wake_up_interruptible(&hdev->req_wait_q); | |
113 | } | |
114 | } | |
115 | ||
116 | /* Execute request and wait for completion. */ | |
8e87d142 | 117 | static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
1da177e4 LT |
118 | unsigned long opt, __u32 timeout) |
119 | { | |
120 | DECLARE_WAITQUEUE(wait, current); | |
121 | int err = 0; | |
122 | ||
123 | BT_DBG("%s start", hdev->name); | |
124 | ||
125 | hdev->req_status = HCI_REQ_PEND; | |
126 | ||
127 | add_wait_queue(&hdev->req_wait_q, &wait); | |
128 | set_current_state(TASK_INTERRUPTIBLE); | |
129 | ||
130 | req(hdev, opt); | |
131 | schedule_timeout(timeout); | |
132 | ||
133 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
134 | ||
135 | if (signal_pending(current)) | |
136 | return -EINTR; | |
137 | ||
138 | switch (hdev->req_status) { | |
139 | case HCI_REQ_DONE: | |
140 | err = -bt_err(hdev->req_result); | |
141 | break; | |
142 | ||
143 | case HCI_REQ_CANCELED: | |
144 | err = -hdev->req_result; | |
145 | break; | |
146 | ||
147 | default: | |
148 | err = -ETIMEDOUT; | |
149 | break; | |
3ff50b79 | 150 | } |
1da177e4 LT |
151 | |
152 | hdev->req_status = hdev->req_result = 0; | |
153 | ||
154 | BT_DBG("%s end: err %d", hdev->name, err); | |
155 | ||
156 | return err; | |
157 | } | |
158 | ||
159 | static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), | |
160 | unsigned long opt, __u32 timeout) | |
161 | { | |
162 | int ret; | |
163 | ||
7c6a329e MH |
164 | if (!test_bit(HCI_UP, &hdev->flags)) |
165 | return -ENETDOWN; | |
166 | ||
1da177e4 LT |
167 | /* Serialize all requests */ |
168 | hci_req_lock(hdev); | |
169 | ret = __hci_request(hdev, req, opt, timeout); | |
170 | hci_req_unlock(hdev); | |
171 | ||
172 | return ret; | |
173 | } | |
174 | ||
175 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) | |
176 | { | |
177 | BT_DBG("%s %ld", hdev->name, opt); | |
178 | ||
179 | /* Reset device */ | |
a9de9248 | 180 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
181 | } |
182 | ||
183 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) | |
184 | { | |
185 | struct sk_buff *skb; | |
1ebb9252 | 186 | __le16 param; |
89f2783d | 187 | __u8 flt_type; |
1da177e4 LT |
188 | |
189 | BT_DBG("%s %ld", hdev->name, opt); | |
190 | ||
191 | /* Driver initialization */ | |
192 | ||
193 | /* Special commands */ | |
194 | while ((skb = skb_dequeue(&hdev->driver_init))) { | |
0d48d939 | 195 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 196 | skb->dev = (void *) hdev; |
c78ae283 | 197 | |
1da177e4 | 198 | skb_queue_tail(&hdev->cmd_q, skb); |
c78ae283 | 199 | tasklet_schedule(&hdev->cmd_task); |
1da177e4 LT |
200 | } |
201 | skb_queue_purge(&hdev->driver_init); | |
202 | ||
203 | /* Mandatory initialization */ | |
204 | ||
205 | /* Reset */ | |
7a9d4020 | 206 | if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) |
a9de9248 | 207 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
1da177e4 LT |
208 | |
209 | /* Read Local Supported Features */ | |
a9de9248 | 210 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 211 | |
1143e5a6 | 212 | /* Read Local Version */ |
a9de9248 | 213 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
1143e5a6 | 214 | |
1da177e4 | 215 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
a9de9248 | 216 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
1da177e4 LT |
217 | |
218 | #if 0 | |
219 | /* Host buffer size */ | |
220 | { | |
221 | struct hci_cp_host_buffer_size cp; | |
aca3192c | 222 | cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); |
1da177e4 | 223 | cp.sco_mtu = HCI_MAX_SCO_SIZE; |
aca3192c YH |
224 | cp.acl_max_pkt = cpu_to_le16(0xffff); |
225 | cp.sco_max_pkt = cpu_to_le16(0xffff); | |
a9de9248 | 226 | hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); |
1da177e4 LT |
227 | } |
228 | #endif | |
229 | ||
230 | /* Read BD Address */ | |
a9de9248 MH |
231 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
232 | ||
233 | /* Read Class of Device */ | |
234 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); | |
235 | ||
236 | /* Read Local Name */ | |
237 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); | |
1da177e4 LT |
238 | |
239 | /* Read Voice Setting */ | |
a9de9248 | 240 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
1da177e4 LT |
241 | |
242 | /* Optional initialization */ | |
243 | ||
244 | /* Clear Event Filters */ | |
89f2783d | 245 | flt_type = HCI_FLT_CLEAR_ALL; |
a9de9248 | 246 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
1da177e4 LT |
247 | |
248 | /* Page timeout ~20 secs */ | |
aca3192c | 249 | param = cpu_to_le16(0x8000); |
a9de9248 | 250 | hci_send_cmd(hdev, HCI_OP_WRITE_PG_TIMEOUT, 2, ¶m); |
1da177e4 LT |
251 | |
252 | /* Connection accept timeout ~20 secs */ | |
aca3192c | 253 | param = cpu_to_le16(0x7d00); |
a9de9248 | 254 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
1da177e4 LT |
255 | } |
256 | ||
257 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) | |
258 | { | |
259 | __u8 scan = opt; | |
260 | ||
261 | BT_DBG("%s %x", hdev->name, scan); | |
262 | ||
263 | /* Inquiry and Page scans */ | |
a9de9248 | 264 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
265 | } |
266 | ||
267 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) | |
268 | { | |
269 | __u8 auth = opt; | |
270 | ||
271 | BT_DBG("%s %x", hdev->name, auth); | |
272 | ||
273 | /* Authentication */ | |
a9de9248 | 274 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
275 | } |
276 | ||
277 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) | |
278 | { | |
279 | __u8 encrypt = opt; | |
280 | ||
281 | BT_DBG("%s %x", hdev->name, encrypt); | |
282 | ||
e4e8e37c | 283 | /* Encryption */ |
a9de9248 | 284 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
285 | } |
286 | ||
e4e8e37c MH |
287 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
288 | { | |
289 | __le16 policy = cpu_to_le16(opt); | |
290 | ||
a418b893 | 291 | BT_DBG("%s %x", hdev->name, policy); |
e4e8e37c MH |
292 | |
293 | /* Default link policy */ | |
294 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); | |
295 | } | |
296 | ||
8e87d142 | 297 | /* Get HCI device by index. |
1da177e4 LT |
298 | * Device is held on return. */ |
299 | struct hci_dev *hci_dev_get(int index) | |
300 | { | |
301 | struct hci_dev *hdev = NULL; | |
302 | struct list_head *p; | |
303 | ||
304 | BT_DBG("%d", index); | |
305 | ||
306 | if (index < 0) | |
307 | return NULL; | |
308 | ||
309 | read_lock(&hci_dev_list_lock); | |
310 | list_for_each(p, &hci_dev_list) { | |
311 | struct hci_dev *d = list_entry(p, struct hci_dev, list); | |
312 | if (d->id == index) { | |
313 | hdev = hci_dev_hold(d); | |
314 | break; | |
315 | } | |
316 | } | |
317 | read_unlock(&hci_dev_list_lock); | |
318 | return hdev; | |
319 | } | |
1da177e4 LT |
320 | |
321 | /* ---- Inquiry support ---- */ | |
322 | static void inquiry_cache_flush(struct hci_dev *hdev) | |
323 | { | |
324 | struct inquiry_cache *cache = &hdev->inq_cache; | |
325 | struct inquiry_entry *next = cache->list, *e; | |
326 | ||
327 | BT_DBG("cache %p", cache); | |
328 | ||
329 | cache->list = NULL; | |
330 | while ((e = next)) { | |
331 | next = e->next; | |
332 | kfree(e); | |
333 | } | |
334 | } | |
335 | ||
336 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
337 | { | |
338 | struct inquiry_cache *cache = &hdev->inq_cache; | |
339 | struct inquiry_entry *e; | |
340 | ||
341 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); | |
342 | ||
343 | for (e = cache->list; e; e = e->next) | |
344 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
345 | break; | |
346 | return e; | |
347 | } | |
348 | ||
349 | void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) | |
350 | { | |
351 | struct inquiry_cache *cache = &hdev->inq_cache; | |
70f23020 | 352 | struct inquiry_entry *ie; |
1da177e4 LT |
353 | |
354 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); | |
355 | ||
70f23020 AE |
356 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
357 | if (!ie) { | |
1da177e4 | 358 | /* Entry not in the cache. Add new one. */ |
70f23020 AE |
359 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
360 | if (!ie) | |
1da177e4 | 361 | return; |
70f23020 AE |
362 | |
363 | ie->next = cache->list; | |
364 | cache->list = ie; | |
1da177e4 LT |
365 | } |
366 | ||
70f23020 AE |
367 | memcpy(&ie->data, data, sizeof(*data)); |
368 | ie->timestamp = jiffies; | |
1da177e4 LT |
369 | cache->timestamp = jiffies; |
370 | } | |
371 | ||
372 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
373 | { | |
374 | struct inquiry_cache *cache = &hdev->inq_cache; | |
375 | struct inquiry_info *info = (struct inquiry_info *) buf; | |
376 | struct inquiry_entry *e; | |
377 | int copied = 0; | |
378 | ||
379 | for (e = cache->list; e && copied < num; e = e->next, copied++) { | |
380 | struct inquiry_data *data = &e->data; | |
381 | bacpy(&info->bdaddr, &data->bdaddr); | |
382 | info->pscan_rep_mode = data->pscan_rep_mode; | |
383 | info->pscan_period_mode = data->pscan_period_mode; | |
384 | info->pscan_mode = data->pscan_mode; | |
385 | memcpy(info->dev_class, data->dev_class, 3); | |
386 | info->clock_offset = data->clock_offset; | |
387 | info++; | |
388 | } | |
389 | ||
390 | BT_DBG("cache %p, copied %d", cache, copied); | |
391 | return copied; | |
392 | } | |
393 | ||
394 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) | |
395 | { | |
396 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
397 | struct hci_cp_inquiry cp; | |
398 | ||
399 | BT_DBG("%s", hdev->name); | |
400 | ||
401 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
402 | return; | |
403 | ||
404 | /* Start Inquiry */ | |
405 | memcpy(&cp.lap, &ir->lap, 3); | |
406 | cp.length = ir->length; | |
407 | cp.num_rsp = ir->num_rsp; | |
a9de9248 | 408 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
409 | } |
410 | ||
411 | int hci_inquiry(void __user *arg) | |
412 | { | |
413 | __u8 __user *ptr = arg; | |
414 | struct hci_inquiry_req ir; | |
415 | struct hci_dev *hdev; | |
416 | int err = 0, do_inquiry = 0, max_rsp; | |
417 | long timeo; | |
418 | __u8 *buf; | |
419 | ||
420 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
421 | return -EFAULT; | |
422 | ||
423 | if (!(hdev = hci_dev_get(ir.dev_id))) | |
424 | return -ENODEV; | |
425 | ||
426 | hci_dev_lock_bh(hdev); | |
8e87d142 | 427 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
70f23020 AE |
428 | inquiry_cache_empty(hdev) || |
429 | ir.flags & IREQ_CACHE_FLUSH) { | |
1da177e4 LT |
430 | inquiry_cache_flush(hdev); |
431 | do_inquiry = 1; | |
432 | } | |
433 | hci_dev_unlock_bh(hdev); | |
434 | ||
04837f64 | 435 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
436 | |
437 | if (do_inquiry) { | |
438 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); | |
439 | if (err < 0) | |
440 | goto done; | |
441 | } | |
1da177e4 LT |
442 | |
443 | /* for unlimited number of responses we will use buffer with 255 entries */ | |
444 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; | |
445 | ||
446 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
447 | * copy it to the user space. | |
448 | */ | |
70f23020 AE |
449 | buf = kmalloc(sizeof(struct inquiry_info) *max_rsp, GFP_KERNEL); |
450 | if (!buf) { | |
1da177e4 LT |
451 | err = -ENOMEM; |
452 | goto done; | |
453 | } | |
454 | ||
455 | hci_dev_lock_bh(hdev); | |
456 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); | |
457 | hci_dev_unlock_bh(hdev); | |
458 | ||
459 | BT_DBG("num_rsp %d", ir.num_rsp); | |
460 | ||
461 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
462 | ptr += sizeof(ir); | |
463 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
464 | ir.num_rsp)) | |
465 | err = -EFAULT; | |
8e87d142 | 466 | } else |
1da177e4 LT |
467 | err = -EFAULT; |
468 | ||
469 | kfree(buf); | |
470 | ||
471 | done: | |
472 | hci_dev_put(hdev); | |
473 | return err; | |
474 | } | |
475 | ||
476 | /* ---- HCI ioctl helpers ---- */ | |
477 | ||
478 | int hci_dev_open(__u16 dev) | |
479 | { | |
480 | struct hci_dev *hdev; | |
481 | int ret = 0; | |
482 | ||
483 | if (!(hdev = hci_dev_get(dev))) | |
484 | return -ENODEV; | |
485 | ||
486 | BT_DBG("%s %p", hdev->name, hdev); | |
487 | ||
488 | hci_req_lock(hdev); | |
489 | ||
611b30f7 MH |
490 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
491 | ret = -ERFKILL; | |
492 | goto done; | |
493 | } | |
494 | ||
1da177e4 LT |
495 | if (test_bit(HCI_UP, &hdev->flags)) { |
496 | ret = -EALREADY; | |
497 | goto done; | |
498 | } | |
499 | ||
500 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
501 | set_bit(HCI_RAW, &hdev->flags); | |
502 | ||
943da25d MH |
503 | /* Treat all non BR/EDR controllers as raw devices for now */ |
504 | if (hdev->dev_type != HCI_BREDR) | |
505 | set_bit(HCI_RAW, &hdev->flags); | |
506 | ||
1da177e4 LT |
507 | if (hdev->open(hdev)) { |
508 | ret = -EIO; | |
509 | goto done; | |
510 | } | |
511 | ||
512 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
513 | atomic_set(&hdev->cmd_cnt, 1); | |
514 | set_bit(HCI_INIT, &hdev->flags); | |
515 | ||
516 | //__hci_request(hdev, hci_reset_req, 0, HZ); | |
04837f64 MH |
517 | ret = __hci_request(hdev, hci_init_req, 0, |
518 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
519 | |
520 | clear_bit(HCI_INIT, &hdev->flags); | |
521 | } | |
522 | ||
523 | if (!ret) { | |
524 | hci_dev_hold(hdev); | |
525 | set_bit(HCI_UP, &hdev->flags); | |
526 | hci_notify(hdev, HCI_DEV_UP); | |
8e87d142 | 527 | } else { |
1da177e4 LT |
528 | /* Init failed, cleanup */ |
529 | tasklet_kill(&hdev->rx_task); | |
530 | tasklet_kill(&hdev->tx_task); | |
531 | tasklet_kill(&hdev->cmd_task); | |
532 | ||
533 | skb_queue_purge(&hdev->cmd_q); | |
534 | skb_queue_purge(&hdev->rx_q); | |
535 | ||
536 | if (hdev->flush) | |
537 | hdev->flush(hdev); | |
538 | ||
539 | if (hdev->sent_cmd) { | |
540 | kfree_skb(hdev->sent_cmd); | |
541 | hdev->sent_cmd = NULL; | |
542 | } | |
543 | ||
544 | hdev->close(hdev); | |
545 | hdev->flags = 0; | |
546 | } | |
547 | ||
548 | done: | |
549 | hci_req_unlock(hdev); | |
550 | hci_dev_put(hdev); | |
551 | return ret; | |
552 | } | |
553 | ||
554 | static int hci_dev_do_close(struct hci_dev *hdev) | |
555 | { | |
556 | BT_DBG("%s %p", hdev->name, hdev); | |
557 | ||
558 | hci_req_cancel(hdev, ENODEV); | |
559 | hci_req_lock(hdev); | |
560 | ||
561 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
562 | hci_req_unlock(hdev); | |
563 | return 0; | |
564 | } | |
565 | ||
566 | /* Kill RX and TX tasks */ | |
567 | tasklet_kill(&hdev->rx_task); | |
568 | tasklet_kill(&hdev->tx_task); | |
569 | ||
570 | hci_dev_lock_bh(hdev); | |
571 | inquiry_cache_flush(hdev); | |
572 | hci_conn_hash_flush(hdev); | |
573 | hci_dev_unlock_bh(hdev); | |
574 | ||
575 | hci_notify(hdev, HCI_DEV_DOWN); | |
576 | ||
577 | if (hdev->flush) | |
578 | hdev->flush(hdev); | |
579 | ||
580 | /* Reset device */ | |
581 | skb_queue_purge(&hdev->cmd_q); | |
582 | atomic_set(&hdev->cmd_cnt, 1); | |
583 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
584 | set_bit(HCI_INIT, &hdev->flags); | |
04837f64 MH |
585 | __hci_request(hdev, hci_reset_req, 0, |
586 | msecs_to_jiffies(250)); | |
1da177e4 LT |
587 | clear_bit(HCI_INIT, &hdev->flags); |
588 | } | |
589 | ||
590 | /* Kill cmd task */ | |
591 | tasklet_kill(&hdev->cmd_task); | |
592 | ||
593 | /* Drop queues */ | |
594 | skb_queue_purge(&hdev->rx_q); | |
595 | skb_queue_purge(&hdev->cmd_q); | |
596 | skb_queue_purge(&hdev->raw_q); | |
597 | ||
598 | /* Drop last sent command */ | |
599 | if (hdev->sent_cmd) { | |
600 | kfree_skb(hdev->sent_cmd); | |
601 | hdev->sent_cmd = NULL; | |
602 | } | |
603 | ||
604 | /* After this point our queues are empty | |
605 | * and no tasks are scheduled. */ | |
606 | hdev->close(hdev); | |
607 | ||
608 | /* Clear flags */ | |
609 | hdev->flags = 0; | |
610 | ||
611 | hci_req_unlock(hdev); | |
612 | ||
613 | hci_dev_put(hdev); | |
614 | return 0; | |
615 | } | |
616 | ||
617 | int hci_dev_close(__u16 dev) | |
618 | { | |
619 | struct hci_dev *hdev; | |
620 | int err; | |
621 | ||
70f23020 AE |
622 | hdev = hci_dev_get(dev); |
623 | if (!hdev) | |
1da177e4 LT |
624 | return -ENODEV; |
625 | err = hci_dev_do_close(hdev); | |
626 | hci_dev_put(hdev); | |
627 | return err; | |
628 | } | |
629 | ||
630 | int hci_dev_reset(__u16 dev) | |
631 | { | |
632 | struct hci_dev *hdev; | |
633 | int ret = 0; | |
634 | ||
70f23020 AE |
635 | hdev = hci_dev_get(dev); |
636 | if (!hdev) | |
1da177e4 LT |
637 | return -ENODEV; |
638 | ||
639 | hci_req_lock(hdev); | |
640 | tasklet_disable(&hdev->tx_task); | |
641 | ||
642 | if (!test_bit(HCI_UP, &hdev->flags)) | |
643 | goto done; | |
644 | ||
645 | /* Drop queues */ | |
646 | skb_queue_purge(&hdev->rx_q); | |
647 | skb_queue_purge(&hdev->cmd_q); | |
648 | ||
649 | hci_dev_lock_bh(hdev); | |
650 | inquiry_cache_flush(hdev); | |
651 | hci_conn_hash_flush(hdev); | |
652 | hci_dev_unlock_bh(hdev); | |
653 | ||
654 | if (hdev->flush) | |
655 | hdev->flush(hdev); | |
656 | ||
8e87d142 | 657 | atomic_set(&hdev->cmd_cnt, 1); |
1da177e4 LT |
658 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; |
659 | ||
660 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
04837f64 MH |
661 | ret = __hci_request(hdev, hci_reset_req, 0, |
662 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
663 | |
664 | done: | |
665 | tasklet_enable(&hdev->tx_task); | |
666 | hci_req_unlock(hdev); | |
667 | hci_dev_put(hdev); | |
668 | return ret; | |
669 | } | |
670 | ||
671 | int hci_dev_reset_stat(__u16 dev) | |
672 | { | |
673 | struct hci_dev *hdev; | |
674 | int ret = 0; | |
675 | ||
70f23020 AE |
676 | hdev = hci_dev_get(dev); |
677 | if (!hdev) | |
1da177e4 LT |
678 | return -ENODEV; |
679 | ||
680 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); | |
681 | ||
682 | hci_dev_put(hdev); | |
683 | ||
684 | return ret; | |
685 | } | |
686 | ||
687 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
688 | { | |
689 | struct hci_dev *hdev; | |
690 | struct hci_dev_req dr; | |
691 | int err = 0; | |
692 | ||
693 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
694 | return -EFAULT; | |
695 | ||
70f23020 AE |
696 | hdev = hci_dev_get(dr.dev_id); |
697 | if (!hdev) | |
1da177e4 LT |
698 | return -ENODEV; |
699 | ||
700 | switch (cmd) { | |
701 | case HCISETAUTH: | |
04837f64 MH |
702 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
703 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
704 | break; |
705 | ||
706 | case HCISETENCRYPT: | |
707 | if (!lmp_encrypt_capable(hdev)) { | |
708 | err = -EOPNOTSUPP; | |
709 | break; | |
710 | } | |
711 | ||
712 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
713 | /* Auth must be enabled first */ | |
04837f64 MH |
714 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
715 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
716 | if (err) |
717 | break; | |
718 | } | |
719 | ||
04837f64 MH |
720 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
721 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
722 | break; |
723 | ||
724 | case HCISETSCAN: | |
04837f64 MH |
725 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
726 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
727 | break; |
728 | ||
1da177e4 | 729 | case HCISETLINKPOL: |
e4e8e37c MH |
730 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
731 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); | |
1da177e4 LT |
732 | break; |
733 | ||
734 | case HCISETLINKMODE: | |
e4e8e37c MH |
735 | hdev->link_mode = ((__u16) dr.dev_opt) & |
736 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
737 | break; | |
738 | ||
739 | case HCISETPTYPE: | |
740 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
741 | break; |
742 | ||
743 | case HCISETACLMTU: | |
e4e8e37c MH |
744 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
745 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
746 | break; |
747 | ||
748 | case HCISETSCOMTU: | |
e4e8e37c MH |
749 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
750 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
751 | break; |
752 | ||
753 | default: | |
754 | err = -EINVAL; | |
755 | break; | |
756 | } | |
e4e8e37c | 757 | |
1da177e4 LT |
758 | hci_dev_put(hdev); |
759 | return err; | |
760 | } | |
761 | ||
762 | int hci_get_dev_list(void __user *arg) | |
763 | { | |
764 | struct hci_dev_list_req *dl; | |
765 | struct hci_dev_req *dr; | |
766 | struct list_head *p; | |
767 | int n = 0, size, err; | |
768 | __u16 dev_num; | |
769 | ||
770 | if (get_user(dev_num, (__u16 __user *) arg)) | |
771 | return -EFAULT; | |
772 | ||
773 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
774 | return -EINVAL; | |
775 | ||
776 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
777 | ||
70f23020 AE |
778 | dl = kzalloc(size, GFP_KERNEL); |
779 | if (!dl) | |
1da177e4 LT |
780 | return -ENOMEM; |
781 | ||
782 | dr = dl->dev_req; | |
783 | ||
784 | read_lock_bh(&hci_dev_list_lock); | |
785 | list_for_each(p, &hci_dev_list) { | |
786 | struct hci_dev *hdev; | |
787 | hdev = list_entry(p, struct hci_dev, list); | |
788 | (dr + n)->dev_id = hdev->id; | |
789 | (dr + n)->dev_opt = hdev->flags; | |
790 | if (++n >= dev_num) | |
791 | break; | |
792 | } | |
793 | read_unlock_bh(&hci_dev_list_lock); | |
794 | ||
795 | dl->dev_num = n; | |
796 | size = sizeof(*dl) + n * sizeof(*dr); | |
797 | ||
798 | err = copy_to_user(arg, dl, size); | |
799 | kfree(dl); | |
800 | ||
801 | return err ? -EFAULT : 0; | |
802 | } | |
803 | ||
804 | int hci_get_dev_info(void __user *arg) | |
805 | { | |
806 | struct hci_dev *hdev; | |
807 | struct hci_dev_info di; | |
808 | int err = 0; | |
809 | ||
810 | if (copy_from_user(&di, arg, sizeof(di))) | |
811 | return -EFAULT; | |
812 | ||
70f23020 AE |
813 | hdev = hci_dev_get(di.dev_id); |
814 | if (!hdev) | |
1da177e4 LT |
815 | return -ENODEV; |
816 | ||
817 | strcpy(di.name, hdev->name); | |
818 | di.bdaddr = hdev->bdaddr; | |
943da25d | 819 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
1da177e4 LT |
820 | di.flags = hdev->flags; |
821 | di.pkt_type = hdev->pkt_type; | |
822 | di.acl_mtu = hdev->acl_mtu; | |
823 | di.acl_pkts = hdev->acl_pkts; | |
824 | di.sco_mtu = hdev->sco_mtu; | |
825 | di.sco_pkts = hdev->sco_pkts; | |
826 | di.link_policy = hdev->link_policy; | |
827 | di.link_mode = hdev->link_mode; | |
828 | ||
829 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
830 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
831 | ||
832 | if (copy_to_user(arg, &di, sizeof(di))) | |
833 | err = -EFAULT; | |
834 | ||
835 | hci_dev_put(hdev); | |
836 | ||
837 | return err; | |
838 | } | |
839 | ||
840 | /* ---- Interface to HCI drivers ---- */ | |
841 | ||
611b30f7 MH |
842 | static int hci_rfkill_set_block(void *data, bool blocked) |
843 | { | |
844 | struct hci_dev *hdev = data; | |
845 | ||
846 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
847 | ||
848 | if (!blocked) | |
849 | return 0; | |
850 | ||
851 | hci_dev_do_close(hdev); | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | static const struct rfkill_ops hci_rfkill_ops = { | |
857 | .set_block = hci_rfkill_set_block, | |
858 | }; | |
859 | ||
1da177e4 LT |
860 | /* Alloc HCI device */ |
861 | struct hci_dev *hci_alloc_dev(void) | |
862 | { | |
863 | struct hci_dev *hdev; | |
864 | ||
25ea6db0 | 865 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
1da177e4 LT |
866 | if (!hdev) |
867 | return NULL; | |
868 | ||
1da177e4 LT |
869 | skb_queue_head_init(&hdev->driver_init); |
870 | ||
871 | return hdev; | |
872 | } | |
873 | EXPORT_SYMBOL(hci_alloc_dev); | |
874 | ||
875 | /* Free HCI device */ | |
876 | void hci_free_dev(struct hci_dev *hdev) | |
877 | { | |
878 | skb_queue_purge(&hdev->driver_init); | |
879 | ||
a91f2e39 MH |
880 | /* will free via device release */ |
881 | put_device(&hdev->dev); | |
1da177e4 LT |
882 | } |
883 | EXPORT_SYMBOL(hci_free_dev); | |
884 | ||
885 | /* Register HCI device */ | |
886 | int hci_register_dev(struct hci_dev *hdev) | |
887 | { | |
888 | struct list_head *head = &hci_dev_list, *p; | |
ef222013 | 889 | int i, id = 0; |
1da177e4 | 890 | |
c13854ce MH |
891 | BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, |
892 | hdev->bus, hdev->owner); | |
1da177e4 LT |
893 | |
894 | if (!hdev->open || !hdev->close || !hdev->destruct) | |
895 | return -EINVAL; | |
896 | ||
897 | write_lock_bh(&hci_dev_list_lock); | |
898 | ||
899 | /* Find first available device id */ | |
900 | list_for_each(p, &hci_dev_list) { | |
901 | if (list_entry(p, struct hci_dev, list)->id != id) | |
902 | break; | |
903 | head = p; id++; | |
904 | } | |
8e87d142 | 905 | |
1da177e4 LT |
906 | sprintf(hdev->name, "hci%d", id); |
907 | hdev->id = id; | |
908 | list_add(&hdev->list, head); | |
909 | ||
910 | atomic_set(&hdev->refcnt, 1); | |
911 | spin_lock_init(&hdev->lock); | |
912 | ||
913 | hdev->flags = 0; | |
914 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); | |
5b7f9909 | 915 | hdev->esco_type = (ESCO_HV1); |
1da177e4 LT |
916 | hdev->link_mode = (HCI_LM_ACCEPT); |
917 | ||
04837f64 MH |
918 | hdev->idle_timeout = 0; |
919 | hdev->sniff_max_interval = 800; | |
920 | hdev->sniff_min_interval = 80; | |
921 | ||
70f23020 | 922 | tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev); |
1da177e4 LT |
923 | tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); |
924 | tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); | |
925 | ||
926 | skb_queue_head_init(&hdev->rx_q); | |
927 | skb_queue_head_init(&hdev->cmd_q); | |
928 | skb_queue_head_init(&hdev->raw_q); | |
929 | ||
cd4c5391 | 930 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
931 | hdev->reassembly[i] = NULL; |
932 | ||
1da177e4 | 933 | init_waitqueue_head(&hdev->req_wait_q); |
a6a67efd | 934 | mutex_init(&hdev->req_lock); |
1da177e4 LT |
935 | |
936 | inquiry_cache_init(hdev); | |
937 | ||
938 | hci_conn_hash_init(hdev); | |
939 | ||
ea4bd8ba | 940 | INIT_LIST_HEAD(&hdev->blacklist); |
f0358568 | 941 | |
1da177e4 LT |
942 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
943 | ||
944 | atomic_set(&hdev->promisc, 0); | |
945 | ||
946 | write_unlock_bh(&hci_dev_list_lock); | |
947 | ||
f48fd9c8 MH |
948 | hdev->workqueue = create_singlethread_workqueue(hdev->name); |
949 | if (!hdev->workqueue) | |
950 | goto nomem; | |
951 | ||
1da177e4 LT |
952 | hci_register_sysfs(hdev); |
953 | ||
611b30f7 MH |
954 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
955 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); | |
956 | if (hdev->rfkill) { | |
957 | if (rfkill_register(hdev->rfkill) < 0) { | |
958 | rfkill_destroy(hdev->rfkill); | |
959 | hdev->rfkill = NULL; | |
960 | } | |
961 | } | |
962 | ||
1da177e4 LT |
963 | hci_notify(hdev, HCI_DEV_REG); |
964 | ||
965 | return id; | |
f48fd9c8 MH |
966 | |
967 | nomem: | |
968 | write_lock_bh(&hci_dev_list_lock); | |
969 | list_del(&hdev->list); | |
970 | write_unlock_bh(&hci_dev_list_lock); | |
971 | ||
972 | return -ENOMEM; | |
1da177e4 LT |
973 | } |
974 | EXPORT_SYMBOL(hci_register_dev); | |
975 | ||
976 | /* Unregister HCI device */ | |
977 | int hci_unregister_dev(struct hci_dev *hdev) | |
978 | { | |
ef222013 MH |
979 | int i; |
980 | ||
c13854ce | 981 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 982 | |
1da177e4 LT |
983 | write_lock_bh(&hci_dev_list_lock); |
984 | list_del(&hdev->list); | |
985 | write_unlock_bh(&hci_dev_list_lock); | |
986 | ||
987 | hci_dev_do_close(hdev); | |
988 | ||
cd4c5391 | 989 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
990 | kfree_skb(hdev->reassembly[i]); |
991 | ||
1da177e4 LT |
992 | hci_notify(hdev, HCI_DEV_UNREG); |
993 | ||
611b30f7 MH |
994 | if (hdev->rfkill) { |
995 | rfkill_unregister(hdev->rfkill); | |
996 | rfkill_destroy(hdev->rfkill); | |
997 | } | |
998 | ||
147e2d59 DY |
999 | hci_unregister_sysfs(hdev); |
1000 | ||
f48fd9c8 MH |
1001 | destroy_workqueue(hdev->workqueue); |
1002 | ||
1da177e4 | 1003 | __hci_dev_put(hdev); |
ef222013 | 1004 | |
1da177e4 LT |
1005 | return 0; |
1006 | } | |
1007 | EXPORT_SYMBOL(hci_unregister_dev); | |
1008 | ||
1009 | /* Suspend HCI device */ | |
1010 | int hci_suspend_dev(struct hci_dev *hdev) | |
1011 | { | |
1012 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
1013 | return 0; | |
1014 | } | |
1015 | EXPORT_SYMBOL(hci_suspend_dev); | |
1016 | ||
1017 | /* Resume HCI device */ | |
1018 | int hci_resume_dev(struct hci_dev *hdev) | |
1019 | { | |
1020 | hci_notify(hdev, HCI_DEV_RESUME); | |
1021 | return 0; | |
1022 | } | |
1023 | EXPORT_SYMBOL(hci_resume_dev); | |
1024 | ||
76bca880 MH |
1025 | /* Receive frame from HCI drivers */ |
1026 | int hci_recv_frame(struct sk_buff *skb) | |
1027 | { | |
1028 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1029 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) | |
1030 | && !test_bit(HCI_INIT, &hdev->flags))) { | |
1031 | kfree_skb(skb); | |
1032 | return -ENXIO; | |
1033 | } | |
1034 | ||
1035 | /* Incomming skb */ | |
1036 | bt_cb(skb)->incoming = 1; | |
1037 | ||
1038 | /* Time stamp */ | |
1039 | __net_timestamp(skb); | |
1040 | ||
1041 | /* Queue frame for rx task */ | |
1042 | skb_queue_tail(&hdev->rx_q, skb); | |
c78ae283 MH |
1043 | tasklet_schedule(&hdev->rx_task); |
1044 | ||
76bca880 MH |
1045 | return 0; |
1046 | } | |
1047 | EXPORT_SYMBOL(hci_recv_frame); | |
1048 | ||
33e882a5 SS |
1049 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
1050 | int count, __u8 index, gfp_t gfp_mask) | |
1051 | { | |
1052 | int len = 0; | |
1053 | int hlen = 0; | |
1054 | int remain = count; | |
1055 | struct sk_buff *skb; | |
1056 | struct bt_skb_cb *scb; | |
1057 | ||
1058 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
1059 | index >= NUM_REASSEMBLY) | |
1060 | return -EILSEQ; | |
1061 | ||
1062 | skb = hdev->reassembly[index]; | |
1063 | ||
1064 | if (!skb) { | |
1065 | switch (type) { | |
1066 | case HCI_ACLDATA_PKT: | |
1067 | len = HCI_MAX_FRAME_SIZE; | |
1068 | hlen = HCI_ACL_HDR_SIZE; | |
1069 | break; | |
1070 | case HCI_EVENT_PKT: | |
1071 | len = HCI_MAX_EVENT_SIZE; | |
1072 | hlen = HCI_EVENT_HDR_SIZE; | |
1073 | break; | |
1074 | case HCI_SCODATA_PKT: | |
1075 | len = HCI_MAX_SCO_SIZE; | |
1076 | hlen = HCI_SCO_HDR_SIZE; | |
1077 | break; | |
1078 | } | |
1079 | ||
1080 | skb = bt_skb_alloc(len, gfp_mask); | |
1081 | if (!skb) | |
1082 | return -ENOMEM; | |
1083 | ||
1084 | scb = (void *) skb->cb; | |
1085 | scb->expect = hlen; | |
1086 | scb->pkt_type = type; | |
1087 | ||
1088 | skb->dev = (void *) hdev; | |
1089 | hdev->reassembly[index] = skb; | |
1090 | } | |
1091 | ||
1092 | while (count) { | |
1093 | scb = (void *) skb->cb; | |
1094 | len = min(scb->expect, (__u16)count); | |
1095 | ||
1096 | memcpy(skb_put(skb, len), data, len); | |
1097 | ||
1098 | count -= len; | |
1099 | data += len; | |
1100 | scb->expect -= len; | |
1101 | remain = count; | |
1102 | ||
1103 | switch (type) { | |
1104 | case HCI_EVENT_PKT: | |
1105 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
1106 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
1107 | scb->expect = h->plen; | |
1108 | ||
1109 | if (skb_tailroom(skb) < scb->expect) { | |
1110 | kfree_skb(skb); | |
1111 | hdev->reassembly[index] = NULL; | |
1112 | return -ENOMEM; | |
1113 | } | |
1114 | } | |
1115 | break; | |
1116 | ||
1117 | case HCI_ACLDATA_PKT: | |
1118 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
1119 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
1120 | scb->expect = __le16_to_cpu(h->dlen); | |
1121 | ||
1122 | if (skb_tailroom(skb) < scb->expect) { | |
1123 | kfree_skb(skb); | |
1124 | hdev->reassembly[index] = NULL; | |
1125 | return -ENOMEM; | |
1126 | } | |
1127 | } | |
1128 | break; | |
1129 | ||
1130 | case HCI_SCODATA_PKT: | |
1131 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
1132 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
1133 | scb->expect = h->dlen; | |
1134 | ||
1135 | if (skb_tailroom(skb) < scb->expect) { | |
1136 | kfree_skb(skb); | |
1137 | hdev->reassembly[index] = NULL; | |
1138 | return -ENOMEM; | |
1139 | } | |
1140 | } | |
1141 | break; | |
1142 | } | |
1143 | ||
1144 | if (scb->expect == 0) { | |
1145 | /* Complete frame */ | |
1146 | ||
1147 | bt_cb(skb)->pkt_type = type; | |
1148 | hci_recv_frame(skb); | |
1149 | ||
1150 | hdev->reassembly[index] = NULL; | |
1151 | return remain; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | return remain; | |
1156 | } | |
1157 | ||
ef222013 MH |
1158 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
1159 | { | |
f39a3c06 SS |
1160 | int rem = 0; |
1161 | ||
ef222013 MH |
1162 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
1163 | return -EILSEQ; | |
1164 | ||
da5f6c37 | 1165 | while (count) { |
f39a3c06 SS |
1166 | rem = hci_reassembly(hdev, type, data, count, |
1167 | type - 1, GFP_ATOMIC); | |
1168 | if (rem < 0) | |
1169 | return rem; | |
ef222013 | 1170 | |
f39a3c06 SS |
1171 | data += (count - rem); |
1172 | count = rem; | |
da5f6c37 | 1173 | }; |
ef222013 | 1174 | |
f39a3c06 | 1175 | return rem; |
ef222013 MH |
1176 | } |
1177 | EXPORT_SYMBOL(hci_recv_fragment); | |
1178 | ||
99811510 SS |
1179 | #define STREAM_REASSEMBLY 0 |
1180 | ||
1181 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
1182 | { | |
1183 | int type; | |
1184 | int rem = 0; | |
1185 | ||
da5f6c37 | 1186 | while (count) { |
99811510 SS |
1187 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
1188 | ||
1189 | if (!skb) { | |
1190 | struct { char type; } *pkt; | |
1191 | ||
1192 | /* Start of the frame */ | |
1193 | pkt = data; | |
1194 | type = pkt->type; | |
1195 | ||
1196 | data++; | |
1197 | count--; | |
1198 | } else | |
1199 | type = bt_cb(skb)->pkt_type; | |
1200 | ||
1201 | rem = hci_reassembly(hdev, type, data, | |
1202 | count, STREAM_REASSEMBLY, GFP_ATOMIC); | |
1203 | if (rem < 0) | |
1204 | return rem; | |
1205 | ||
1206 | data += (count - rem); | |
1207 | count = rem; | |
da5f6c37 | 1208 | }; |
99811510 SS |
1209 | |
1210 | return rem; | |
1211 | } | |
1212 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
1213 | ||
1da177e4 LT |
1214 | /* ---- Interface to upper protocols ---- */ |
1215 | ||
1216 | /* Register/Unregister protocols. | |
1217 | * hci_task_lock is used to ensure that no tasks are running. */ | |
1218 | int hci_register_proto(struct hci_proto *hp) | |
1219 | { | |
1220 | int err = 0; | |
1221 | ||
1222 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); | |
1223 | ||
1224 | if (hp->id >= HCI_MAX_PROTO) | |
1225 | return -EINVAL; | |
1226 | ||
1227 | write_lock_bh(&hci_task_lock); | |
1228 | ||
1229 | if (!hci_proto[hp->id]) | |
1230 | hci_proto[hp->id] = hp; | |
1231 | else | |
1232 | err = -EEXIST; | |
1233 | ||
1234 | write_unlock_bh(&hci_task_lock); | |
1235 | ||
1236 | return err; | |
1237 | } | |
1238 | EXPORT_SYMBOL(hci_register_proto); | |
1239 | ||
1240 | int hci_unregister_proto(struct hci_proto *hp) | |
1241 | { | |
1242 | int err = 0; | |
1243 | ||
1244 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); | |
1245 | ||
1246 | if (hp->id >= HCI_MAX_PROTO) | |
1247 | return -EINVAL; | |
1248 | ||
1249 | write_lock_bh(&hci_task_lock); | |
1250 | ||
1251 | if (hci_proto[hp->id]) | |
1252 | hci_proto[hp->id] = NULL; | |
1253 | else | |
1254 | err = -ENOENT; | |
1255 | ||
1256 | write_unlock_bh(&hci_task_lock); | |
1257 | ||
1258 | return err; | |
1259 | } | |
1260 | EXPORT_SYMBOL(hci_unregister_proto); | |
1261 | ||
1262 | int hci_register_cb(struct hci_cb *cb) | |
1263 | { | |
1264 | BT_DBG("%p name %s", cb, cb->name); | |
1265 | ||
1266 | write_lock_bh(&hci_cb_list_lock); | |
1267 | list_add(&cb->list, &hci_cb_list); | |
1268 | write_unlock_bh(&hci_cb_list_lock); | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | EXPORT_SYMBOL(hci_register_cb); | |
1273 | ||
1274 | int hci_unregister_cb(struct hci_cb *cb) | |
1275 | { | |
1276 | BT_DBG("%p name %s", cb, cb->name); | |
1277 | ||
1278 | write_lock_bh(&hci_cb_list_lock); | |
1279 | list_del(&cb->list); | |
1280 | write_unlock_bh(&hci_cb_list_lock); | |
1281 | ||
1282 | return 0; | |
1283 | } | |
1284 | EXPORT_SYMBOL(hci_unregister_cb); | |
1285 | ||
1286 | static int hci_send_frame(struct sk_buff *skb) | |
1287 | { | |
1288 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; | |
1289 | ||
1290 | if (!hdev) { | |
1291 | kfree_skb(skb); | |
1292 | return -ENODEV; | |
1293 | } | |
1294 | ||
0d48d939 | 1295 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
1296 | |
1297 | if (atomic_read(&hdev->promisc)) { | |
1298 | /* Time stamp */ | |
a61bbcf2 | 1299 | __net_timestamp(skb); |
1da177e4 LT |
1300 | |
1301 | hci_send_to_sock(hdev, skb); | |
1302 | } | |
1303 | ||
1304 | /* Get rid of skb owner, prior to sending to the driver. */ | |
1305 | skb_orphan(skb); | |
1306 | ||
1307 | return hdev->send(skb); | |
1308 | } | |
1309 | ||
1310 | /* Send HCI command */ | |
a9de9248 | 1311 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
1da177e4 LT |
1312 | { |
1313 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
1314 | struct hci_command_hdr *hdr; | |
1315 | struct sk_buff *skb; | |
1316 | ||
a9de9248 | 1317 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
1da177e4 LT |
1318 | |
1319 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
1320 | if (!skb) { | |
ef222013 | 1321 | BT_ERR("%s no memory for command", hdev->name); |
1da177e4 LT |
1322 | return -ENOMEM; |
1323 | } | |
1324 | ||
1325 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 1326 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
1327 | hdr->plen = plen; |
1328 | ||
1329 | if (plen) | |
1330 | memcpy(skb_put(skb, plen), param, plen); | |
1331 | ||
1332 | BT_DBG("skb len %d", skb->len); | |
1333 | ||
0d48d939 | 1334 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
1da177e4 | 1335 | skb->dev = (void *) hdev; |
c78ae283 | 1336 | |
1da177e4 | 1337 | skb_queue_tail(&hdev->cmd_q, skb); |
c78ae283 | 1338 | tasklet_schedule(&hdev->cmd_task); |
1da177e4 LT |
1339 | |
1340 | return 0; | |
1341 | } | |
1da177e4 LT |
1342 | |
1343 | /* Get data from the previously sent command */ | |
a9de9248 | 1344 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
1345 | { |
1346 | struct hci_command_hdr *hdr; | |
1347 | ||
1348 | if (!hdev->sent_cmd) | |
1349 | return NULL; | |
1350 | ||
1351 | hdr = (void *) hdev->sent_cmd->data; | |
1352 | ||
a9de9248 | 1353 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
1354 | return NULL; |
1355 | ||
a9de9248 | 1356 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
1da177e4 LT |
1357 | |
1358 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
1359 | } | |
1360 | ||
1361 | /* Send ACL data */ | |
1362 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
1363 | { | |
1364 | struct hci_acl_hdr *hdr; | |
1365 | int len = skb->len; | |
1366 | ||
badff6d0 ACM |
1367 | skb_push(skb, HCI_ACL_HDR_SIZE); |
1368 | skb_reset_transport_header(skb); | |
9c70220b | 1369 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
1370 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
1371 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
1372 | } |
1373 | ||
9a9c6a34 | 1374 | void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags) |
1da177e4 LT |
1375 | { |
1376 | struct hci_dev *hdev = conn->hdev; | |
1377 | struct sk_buff *list; | |
1378 | ||
1379 | BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); | |
1380 | ||
1381 | skb->dev = (void *) hdev; | |
0d48d939 | 1382 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
1da177e4 LT |
1383 | hci_add_acl_hdr(skb, conn->handle, flags | ACL_START); |
1384 | ||
70f23020 AE |
1385 | list = skb_shinfo(skb)->frag_list; |
1386 | if (!list) { | |
1da177e4 LT |
1387 | /* Non fragmented */ |
1388 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
1389 | ||
1390 | skb_queue_tail(&conn->data_q, skb); | |
1391 | } else { | |
1392 | /* Fragmented */ | |
1393 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
1394 | ||
1395 | skb_shinfo(skb)->frag_list = NULL; | |
1396 | ||
1397 | /* Queue all fragments atomically */ | |
1398 | spin_lock_bh(&conn->data_q.lock); | |
1399 | ||
1400 | __skb_queue_tail(&conn->data_q, skb); | |
1401 | do { | |
1402 | skb = list; list = list->next; | |
8e87d142 | 1403 | |
1da177e4 | 1404 | skb->dev = (void *) hdev; |
0d48d939 | 1405 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
1da177e4 LT |
1406 | hci_add_acl_hdr(skb, conn->handle, flags | ACL_CONT); |
1407 | ||
1408 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
1409 | ||
1410 | __skb_queue_tail(&conn->data_q, skb); | |
1411 | } while (list); | |
1412 | ||
1413 | spin_unlock_bh(&conn->data_q.lock); | |
1414 | } | |
1415 | ||
c78ae283 | 1416 | tasklet_schedule(&hdev->tx_task); |
1da177e4 LT |
1417 | } |
1418 | EXPORT_SYMBOL(hci_send_acl); | |
1419 | ||
1420 | /* Send SCO data */ | |
0d861d8b | 1421 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
1422 | { |
1423 | struct hci_dev *hdev = conn->hdev; | |
1424 | struct hci_sco_hdr hdr; | |
1425 | ||
1426 | BT_DBG("%s len %d", hdev->name, skb->len); | |
1427 | ||
aca3192c | 1428 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
1429 | hdr.dlen = skb->len; |
1430 | ||
badff6d0 ACM |
1431 | skb_push(skb, HCI_SCO_HDR_SIZE); |
1432 | skb_reset_transport_header(skb); | |
9c70220b | 1433 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 LT |
1434 | |
1435 | skb->dev = (void *) hdev; | |
0d48d939 | 1436 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 1437 | |
1da177e4 | 1438 | skb_queue_tail(&conn->data_q, skb); |
c78ae283 | 1439 | tasklet_schedule(&hdev->tx_task); |
1da177e4 LT |
1440 | } |
1441 | EXPORT_SYMBOL(hci_send_sco); | |
1442 | ||
1443 | /* ---- HCI TX task (outgoing data) ---- */ | |
1444 | ||
1445 | /* HCI Connection scheduler */ | |
1446 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) | |
1447 | { | |
1448 | struct hci_conn_hash *h = &hdev->conn_hash; | |
5b7f9909 | 1449 | struct hci_conn *conn = NULL; |
1da177e4 LT |
1450 | int num = 0, min = ~0; |
1451 | struct list_head *p; | |
1452 | ||
8e87d142 | 1453 | /* We don't have to lock device here. Connections are always |
1da177e4 LT |
1454 | * added and removed with TX task disabled. */ |
1455 | list_for_each(p, &h->list) { | |
1456 | struct hci_conn *c; | |
1457 | c = list_entry(p, struct hci_conn, list); | |
1458 | ||
769be974 | 1459 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 1460 | continue; |
769be974 MH |
1461 | |
1462 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
1463 | continue; | |
1464 | ||
1da177e4 LT |
1465 | num++; |
1466 | ||
1467 | if (c->sent < min) { | |
1468 | min = c->sent; | |
1469 | conn = c; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | if (conn) { | |
1474 | int cnt = (type == ACL_LINK ? hdev->acl_cnt : hdev->sco_cnt); | |
1475 | int q = cnt / num; | |
1476 | *quote = q ? q : 1; | |
1477 | } else | |
1478 | *quote = 0; | |
1479 | ||
1480 | BT_DBG("conn %p quote %d", conn, *quote); | |
1481 | return conn; | |
1482 | } | |
1483 | ||
1484 | static inline void hci_acl_tx_to(struct hci_dev *hdev) | |
1485 | { | |
1486 | struct hci_conn_hash *h = &hdev->conn_hash; | |
1487 | struct list_head *p; | |
1488 | struct hci_conn *c; | |
1489 | ||
1490 | BT_ERR("%s ACL tx timeout", hdev->name); | |
1491 | ||
1492 | /* Kill stalled connections */ | |
1493 | list_for_each(p, &h->list) { | |
1494 | c = list_entry(p, struct hci_conn, list); | |
1495 | if (c->type == ACL_LINK && c->sent) { | |
1496 | BT_ERR("%s killing stalled ACL connection %s", | |
1497 | hdev->name, batostr(&c->dst)); | |
1498 | hci_acl_disconn(c, 0x13); | |
1499 | } | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | static inline void hci_sched_acl(struct hci_dev *hdev) | |
1504 | { | |
1505 | struct hci_conn *conn; | |
1506 | struct sk_buff *skb; | |
1507 | int quote; | |
1508 | ||
1509 | BT_DBG("%s", hdev->name); | |
1510 | ||
1511 | if (!test_bit(HCI_RAW, &hdev->flags)) { | |
1512 | /* ACL tx timeout must be longer than maximum | |
1513 | * link supervision timeout (40.9 seconds) */ | |
82453021 | 1514 | if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) |
1da177e4 LT |
1515 | hci_acl_tx_to(hdev); |
1516 | } | |
1517 | ||
1518 | while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { | |
1519 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
1520 | BT_DBG("skb %p len %d", skb, skb->len); | |
04837f64 MH |
1521 | |
1522 | hci_conn_enter_active_mode(conn); | |
1523 | ||
1da177e4 LT |
1524 | hci_send_frame(skb); |
1525 | hdev->acl_last_tx = jiffies; | |
1526 | ||
1527 | hdev->acl_cnt--; | |
1528 | conn->sent++; | |
1529 | } | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | /* Schedule SCO */ | |
1534 | static inline void hci_sched_sco(struct hci_dev *hdev) | |
1535 | { | |
1536 | struct hci_conn *conn; | |
1537 | struct sk_buff *skb; | |
1538 | int quote; | |
1539 | ||
1540 | BT_DBG("%s", hdev->name); | |
1541 | ||
1542 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { | |
1543 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
1544 | BT_DBG("skb %p len %d", skb, skb->len); | |
1545 | hci_send_frame(skb); | |
1546 | ||
1547 | conn->sent++; | |
1548 | if (conn->sent == ~0) | |
1549 | conn->sent = 0; | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | ||
b6a0dc82 MH |
1554 | static inline void hci_sched_esco(struct hci_dev *hdev) |
1555 | { | |
1556 | struct hci_conn *conn; | |
1557 | struct sk_buff *skb; | |
1558 | int quote; | |
1559 | ||
1560 | BT_DBG("%s", hdev->name); | |
1561 | ||
1562 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { | |
1563 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
1564 | BT_DBG("skb %p len %d", skb, skb->len); | |
1565 | hci_send_frame(skb); | |
1566 | ||
1567 | conn->sent++; | |
1568 | if (conn->sent == ~0) | |
1569 | conn->sent = 0; | |
1570 | } | |
1571 | } | |
1572 | } | |
1573 | ||
1da177e4 LT |
1574 | static void hci_tx_task(unsigned long arg) |
1575 | { | |
1576 | struct hci_dev *hdev = (struct hci_dev *) arg; | |
1577 | struct sk_buff *skb; | |
1578 | ||
1579 | read_lock(&hci_task_lock); | |
1580 | ||
1581 | BT_DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt); | |
1582 | ||
1583 | /* Schedule queues and send stuff to HCI driver */ | |
1584 | ||
1585 | hci_sched_acl(hdev); | |
1586 | ||
1587 | hci_sched_sco(hdev); | |
1588 | ||
b6a0dc82 MH |
1589 | hci_sched_esco(hdev); |
1590 | ||
1da177e4 LT |
1591 | /* Send next queued raw (unknown type) packet */ |
1592 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
1593 | hci_send_frame(skb); | |
1594 | ||
1595 | read_unlock(&hci_task_lock); | |
1596 | } | |
1597 | ||
1598 | /* ----- HCI RX task (incoming data proccessing) ----- */ | |
1599 | ||
1600 | /* ACL data packet */ | |
1601 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
1602 | { | |
1603 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
1604 | struct hci_conn *conn; | |
1605 | __u16 handle, flags; | |
1606 | ||
1607 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
1608 | ||
1609 | handle = __le16_to_cpu(hdr->handle); | |
1610 | flags = hci_flags(handle); | |
1611 | handle = hci_handle(handle); | |
1612 | ||
1613 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); | |
1614 | ||
1615 | hdev->stat.acl_rx++; | |
1616 | ||
1617 | hci_dev_lock(hdev); | |
1618 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
1619 | hci_dev_unlock(hdev); | |
8e87d142 | 1620 | |
1da177e4 LT |
1621 | if (conn) { |
1622 | register struct hci_proto *hp; | |
1623 | ||
04837f64 MH |
1624 | hci_conn_enter_active_mode(conn); |
1625 | ||
1da177e4 | 1626 | /* Send to upper protocol */ |
70f23020 AE |
1627 | hp = hci_proto[HCI_PROTO_L2CAP]; |
1628 | if (hp && hp->recv_acldata) { | |
1da177e4 LT |
1629 | hp->recv_acldata(conn, skb, flags); |
1630 | return; | |
1631 | } | |
1632 | } else { | |
8e87d142 | 1633 | BT_ERR("%s ACL packet for unknown connection handle %d", |
1da177e4 LT |
1634 | hdev->name, handle); |
1635 | } | |
1636 | ||
1637 | kfree_skb(skb); | |
1638 | } | |
1639 | ||
1640 | /* SCO data packet */ | |
1641 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) | |
1642 | { | |
1643 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
1644 | struct hci_conn *conn; | |
1645 | __u16 handle; | |
1646 | ||
1647 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
1648 | ||
1649 | handle = __le16_to_cpu(hdr->handle); | |
1650 | ||
1651 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); | |
1652 | ||
1653 | hdev->stat.sco_rx++; | |
1654 | ||
1655 | hci_dev_lock(hdev); | |
1656 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
1657 | hci_dev_unlock(hdev); | |
1658 | ||
1659 | if (conn) { | |
1660 | register struct hci_proto *hp; | |
1661 | ||
1662 | /* Send to upper protocol */ | |
70f23020 AE |
1663 | hp = hci_proto[HCI_PROTO_SCO]; |
1664 | if (hp && hp->recv_scodata) { | |
1da177e4 LT |
1665 | hp->recv_scodata(conn, skb); |
1666 | return; | |
1667 | } | |
1668 | } else { | |
8e87d142 | 1669 | BT_ERR("%s SCO packet for unknown connection handle %d", |
1da177e4 LT |
1670 | hdev->name, handle); |
1671 | } | |
1672 | ||
1673 | kfree_skb(skb); | |
1674 | } | |
1675 | ||
6516455d | 1676 | static void hci_rx_task(unsigned long arg) |
1da177e4 LT |
1677 | { |
1678 | struct hci_dev *hdev = (struct hci_dev *) arg; | |
1679 | struct sk_buff *skb; | |
1680 | ||
1681 | BT_DBG("%s", hdev->name); | |
1682 | ||
1683 | read_lock(&hci_task_lock); | |
1684 | ||
1685 | while ((skb = skb_dequeue(&hdev->rx_q))) { | |
1686 | if (atomic_read(&hdev->promisc)) { | |
1687 | /* Send copy to the sockets */ | |
1688 | hci_send_to_sock(hdev, skb); | |
1689 | } | |
1690 | ||
1691 | if (test_bit(HCI_RAW, &hdev->flags)) { | |
1692 | kfree_skb(skb); | |
1693 | continue; | |
1694 | } | |
1695 | ||
1696 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
1697 | /* Don't process data packets in this states. */ | |
0d48d939 | 1698 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
1699 | case HCI_ACLDATA_PKT: |
1700 | case HCI_SCODATA_PKT: | |
1701 | kfree_skb(skb); | |
1702 | continue; | |
3ff50b79 | 1703 | } |
1da177e4 LT |
1704 | } |
1705 | ||
1706 | /* Process frame */ | |
0d48d939 | 1707 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
1708 | case HCI_EVENT_PKT: |
1709 | hci_event_packet(hdev, skb); | |
1710 | break; | |
1711 | ||
1712 | case HCI_ACLDATA_PKT: | |
1713 | BT_DBG("%s ACL data packet", hdev->name); | |
1714 | hci_acldata_packet(hdev, skb); | |
1715 | break; | |
1716 | ||
1717 | case HCI_SCODATA_PKT: | |
1718 | BT_DBG("%s SCO data packet", hdev->name); | |
1719 | hci_scodata_packet(hdev, skb); | |
1720 | break; | |
1721 | ||
1722 | default: | |
1723 | kfree_skb(skb); | |
1724 | break; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | read_unlock(&hci_task_lock); | |
1729 | } | |
1730 | ||
1731 | static void hci_cmd_task(unsigned long arg) | |
1732 | { | |
1733 | struct hci_dev *hdev = (struct hci_dev *) arg; | |
1734 | struct sk_buff *skb; | |
1735 | ||
1736 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); | |
1737 | ||
82453021 | 1738 | if (!atomic_read(&hdev->cmd_cnt) && time_after(jiffies, hdev->cmd_last_tx + HZ)) { |
1da177e4 LT |
1739 | BT_ERR("%s command tx timeout", hdev->name); |
1740 | atomic_set(&hdev->cmd_cnt, 1); | |
1741 | } | |
1742 | ||
1743 | /* Send queued commands */ | |
1744 | if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) { | |
7585b97a | 1745 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 1746 | |
70f23020 AE |
1747 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
1748 | if (hdev->sent_cmd) { | |
1da177e4 LT |
1749 | atomic_dec(&hdev->cmd_cnt); |
1750 | hci_send_frame(skb); | |
1751 | hdev->cmd_last_tx = jiffies; | |
1752 | } else { | |
1753 | skb_queue_head(&hdev->cmd_q, skb); | |
c78ae283 | 1754 | tasklet_schedule(&hdev->cmd_task); |
1da177e4 LT |
1755 | } |
1756 | } | |
1757 | } |