Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 | 42 | #include "smp.h" |
6d5d2ee6 | 43 | #include "leds.h" |
970c4e46 | 44 | |
b78752cc | 45 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 46 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 47 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 48 | |
1da177e4 LT |
49 | /* HCI device list */ |
50 | LIST_HEAD(hci_dev_list); | |
51 | DEFINE_RWLOCK(hci_dev_list_lock); | |
52 | ||
53 | /* HCI callback list */ | |
54 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 55 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 56 | |
3df92b31 SL |
57 | /* HCI ID Numbering */ |
58 | static DEFINE_IDA(hci_index_ida); | |
59 | ||
baf27f6e MH |
60 | /* ---- HCI debugfs entries ---- */ |
61 | ||
4b4148e9 MH |
62 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
63 | size_t count, loff_t *ppos) | |
64 | { | |
65 | struct hci_dev *hdev = file->private_data; | |
66 | char buf[3]; | |
67 | ||
74b93e9f | 68 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; |
4b4148e9 MH |
69 | buf[1] = '\n'; |
70 | buf[2] = '\0'; | |
71 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
72 | } | |
73 | ||
74 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
75 | size_t count, loff_t *ppos) | |
76 | { | |
77 | struct hci_dev *hdev = file->private_data; | |
78 | struct sk_buff *skb; | |
79 | char buf[32]; | |
80 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
81 | bool enable; | |
4b4148e9 MH |
82 | |
83 | if (!test_bit(HCI_UP, &hdev->flags)) | |
84 | return -ENETDOWN; | |
85 | ||
86 | if (copy_from_user(buf, user_buf, buf_size)) | |
87 | return -EFAULT; | |
88 | ||
89 | buf[buf_size] = '\0'; | |
90 | if (strtobool(buf, &enable)) | |
91 | return -EINVAL; | |
92 | ||
b7cb93e5 | 93 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
94 | return -EALREADY; |
95 | ||
b504430c | 96 | hci_req_sync_lock(hdev); |
4b4148e9 MH |
97 | if (enable) |
98 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
99 | HCI_CMD_TIMEOUT); | |
100 | else | |
101 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
102 | HCI_CMD_TIMEOUT); | |
b504430c | 103 | hci_req_sync_unlock(hdev); |
4b4148e9 MH |
104 | |
105 | if (IS_ERR(skb)) | |
106 | return PTR_ERR(skb); | |
107 | ||
4b4148e9 MH |
108 | kfree_skb(skb); |
109 | ||
b7cb93e5 | 110 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
111 | |
112 | return count; | |
113 | } | |
114 | ||
115 | static const struct file_operations dut_mode_fops = { | |
116 | .open = simple_open, | |
117 | .read = dut_mode_read, | |
118 | .write = dut_mode_write, | |
119 | .llseek = default_llseek, | |
120 | }; | |
121 | ||
4b4113d6 MH |
122 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
123 | size_t count, loff_t *ppos) | |
124 | { | |
125 | struct hci_dev *hdev = file->private_data; | |
126 | char buf[3]; | |
127 | ||
74b93e9f | 128 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; |
4b4113d6 MH |
129 | buf[1] = '\n'; |
130 | buf[2] = '\0'; | |
131 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
132 | } | |
133 | ||
134 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
135 | size_t count, loff_t *ppos) | |
136 | { | |
137 | struct hci_dev *hdev = file->private_data; | |
138 | char buf[32]; | |
139 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
140 | bool enable; | |
141 | int err; | |
142 | ||
143 | if (copy_from_user(buf, user_buf, buf_size)) | |
144 | return -EFAULT; | |
145 | ||
146 | buf[buf_size] = '\0'; | |
147 | if (strtobool(buf, &enable)) | |
148 | return -EINVAL; | |
149 | ||
7e995b9e MH |
150 | /* When the diagnostic flags are not persistent and the transport |
151 | * is not active, then there is no need for the vendor callback. | |
152 | * | |
153 | * Instead just store the desired value. If needed the setting | |
154 | * will be programmed when the controller gets powered on. | |
155 | */ | |
156 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
157 | !test_bit(HCI_RUNNING, &hdev->flags)) | |
158 | goto done; | |
159 | ||
b504430c | 160 | hci_req_sync_lock(hdev); |
4b4113d6 | 161 | err = hdev->set_diag(hdev, enable); |
b504430c | 162 | hci_req_sync_unlock(hdev); |
4b4113d6 MH |
163 | |
164 | if (err < 0) | |
165 | return err; | |
166 | ||
7e995b9e | 167 | done: |
4b4113d6 MH |
168 | if (enable) |
169 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
170 | else | |
171 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
172 | ||
173 | return count; | |
174 | } | |
175 | ||
176 | static const struct file_operations vendor_diag_fops = { | |
177 | .open = simple_open, | |
178 | .read = vendor_diag_read, | |
179 | .write = vendor_diag_write, | |
180 | .llseek = default_llseek, | |
181 | }; | |
182 | ||
f640ee98 MH |
183 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
184 | { | |
185 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
186 | &dut_mode_fops); | |
187 | ||
188 | if (hdev->set_diag) | |
189 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
190 | &vendor_diag_fops); | |
191 | } | |
192 | ||
a1d01db1 | 193 | static int hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 194 | { |
42c6b129 | 195 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
196 | |
197 | /* Reset device */ | |
42c6b129 JH |
198 | set_bit(HCI_RESET, &req->hdev->flags); |
199 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
a1d01db1 | 200 | return 0; |
1da177e4 LT |
201 | } |
202 | ||
42c6b129 | 203 | static void bredr_init(struct hci_request *req) |
1da177e4 | 204 | { |
42c6b129 | 205 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 206 | |
1da177e4 | 207 | /* Read Local Supported Features */ |
42c6b129 | 208 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 209 | |
1143e5a6 | 210 | /* Read Local Version */ |
42c6b129 | 211 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
212 | |
213 | /* Read BD Address */ | |
42c6b129 | 214 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
215 | } |
216 | ||
0af801b9 | 217 | static void amp_init1(struct hci_request *req) |
e61ef499 | 218 | { |
42c6b129 | 219 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 220 | |
e61ef499 | 221 | /* Read Local Version */ |
42c6b129 | 222 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 223 | |
f6996cfe MH |
224 | /* Read Local Supported Commands */ |
225 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
226 | ||
6bcbc489 | 227 | /* Read Local AMP Info */ |
42c6b129 | 228 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
229 | |
230 | /* Read Data Blk size */ | |
42c6b129 | 231 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 232 | |
f38ba941 MH |
233 | /* Read Flow Control Mode */ |
234 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
235 | ||
7528ca1c MH |
236 | /* Read Location Data */ |
237 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
238 | } |
239 | ||
a1d01db1 | 240 | static int amp_init2(struct hci_request *req) |
0af801b9 JH |
241 | { |
242 | /* Read Local Supported Features. Not all AMP controllers | |
243 | * support this so it's placed conditionally in the second | |
244 | * stage init. | |
245 | */ | |
246 | if (req->hdev->commands[14] & 0x20) | |
247 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
a1d01db1 JH |
248 | |
249 | return 0; | |
0af801b9 JH |
250 | } |
251 | ||
a1d01db1 | 252 | static int hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 253 | { |
42c6b129 | 254 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
255 | |
256 | BT_DBG("%s %ld", hdev->name, opt); | |
257 | ||
11778716 AE |
258 | /* Reset */ |
259 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 260 | hci_reset_req(req, 0); |
11778716 | 261 | |
e61ef499 | 262 | switch (hdev->dev_type) { |
ca8bee5d | 263 | case HCI_PRIMARY: |
42c6b129 | 264 | bredr_init(req); |
e61ef499 | 265 | break; |
e61ef499 | 266 | case HCI_AMP: |
0af801b9 | 267 | amp_init1(req); |
e61ef499 | 268 | break; |
e61ef499 AE |
269 | default: |
270 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
271 | break; | |
272 | } | |
a1d01db1 JH |
273 | |
274 | return 0; | |
e61ef499 AE |
275 | } |
276 | ||
42c6b129 | 277 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 278 | { |
2177bab5 JH |
279 | __le16 param; |
280 | __u8 flt_type; | |
281 | ||
282 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 283 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
284 | |
285 | /* Read Class of Device */ | |
42c6b129 | 286 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
287 | |
288 | /* Read Local Name */ | |
42c6b129 | 289 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
290 | |
291 | /* Read Voice Setting */ | |
42c6b129 | 292 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 293 | |
b4cb9fb2 MH |
294 | /* Read Number of Supported IAC */ |
295 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
296 | ||
4b836f39 MH |
297 | /* Read Current IAC LAP */ |
298 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
299 | ||
2177bab5 JH |
300 | /* Clear Event Filters */ |
301 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 302 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
303 | |
304 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 305 | param = cpu_to_le16(0x7d00); |
42c6b129 | 306 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
307 | } |
308 | ||
42c6b129 | 309 | static void le_setup(struct hci_request *req) |
2177bab5 | 310 | { |
c73eee91 JH |
311 | struct hci_dev *hdev = req->hdev; |
312 | ||
2177bab5 | 313 | /* Read LE Buffer Size */ |
42c6b129 | 314 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
315 | |
316 | /* Read LE Local Supported Features */ | |
42c6b129 | 317 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 318 | |
747d3f03 MH |
319 | /* Read LE Supported States */ |
320 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
321 | ||
c73eee91 JH |
322 | /* LE-only controllers have LE implicitly enabled */ |
323 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 324 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
325 | } |
326 | ||
42c6b129 | 327 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 328 | { |
42c6b129 JH |
329 | struct hci_dev *hdev = req->hdev; |
330 | ||
2177bab5 JH |
331 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
332 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
333 | * command otherwise. | |
334 | */ | |
335 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
336 | ||
337 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
338 | * any event mask for pre 1.2 devices. | |
339 | */ | |
340 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
341 | return; | |
342 | ||
343 | if (lmp_bredr_capable(hdev)) { | |
344 | events[4] |= 0x01; /* Flow Specification Complete */ | |
c7882cbd MH |
345 | } else { |
346 | /* Use a different default for LE-only devices */ | |
347 | memset(events, 0, sizeof(events)); | |
c7882cbd MH |
348 | events[1] |= 0x20; /* Command Complete */ |
349 | events[1] |= 0x40; /* Command Status */ | |
350 | events[1] |= 0x80; /* Hardware Error */ | |
5c3d3b4c MH |
351 | |
352 | /* If the controller supports the Disconnect command, enable | |
353 | * the corresponding event. In addition enable packet flow | |
354 | * control related events. | |
355 | */ | |
356 | if (hdev->commands[0] & 0x20) { | |
357 | events[0] |= 0x10; /* Disconnection Complete */ | |
358 | events[2] |= 0x04; /* Number of Completed Packets */ | |
359 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
360 | } | |
361 | ||
362 | /* If the controller supports the Read Remote Version | |
363 | * Information command, enable the corresponding event. | |
364 | */ | |
365 | if (hdev->commands[2] & 0x80) | |
366 | events[1] |= 0x08; /* Read Remote Version Information | |
367 | * Complete | |
368 | */ | |
0da71f1b MH |
369 | |
370 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
371 | events[0] |= 0x80; /* Encryption Change */ | |
372 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
373 | } | |
2177bab5 JH |
374 | } |
375 | ||
9fe759ce MH |
376 | if (lmp_inq_rssi_capable(hdev) || |
377 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2177bab5 JH |
378 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
379 | ||
70f56aa2 MH |
380 | if (lmp_ext_feat_capable(hdev)) |
381 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
382 | ||
383 | if (lmp_esco_capable(hdev)) { | |
384 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
385 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
386 | } | |
387 | ||
2177bab5 JH |
388 | if (lmp_sniffsubr_capable(hdev)) |
389 | events[5] |= 0x20; /* Sniff Subrating */ | |
390 | ||
391 | if (lmp_pause_enc_capable(hdev)) | |
392 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
393 | ||
394 | if (lmp_ext_inq_capable(hdev)) | |
395 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
396 | ||
397 | if (lmp_no_flush_capable(hdev)) | |
398 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
399 | ||
400 | if (lmp_lsto_capable(hdev)) | |
401 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
402 | ||
403 | if (lmp_ssp_capable(hdev)) { | |
404 | events[6] |= 0x01; /* IO Capability Request */ | |
405 | events[6] |= 0x02; /* IO Capability Response */ | |
406 | events[6] |= 0x04; /* User Confirmation Request */ | |
407 | events[6] |= 0x08; /* User Passkey Request */ | |
408 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
409 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
410 | events[7] |= 0x04; /* User Passkey Notification */ | |
411 | events[7] |= 0x08; /* Keypress Notification */ | |
412 | events[7] |= 0x10; /* Remote Host Supported | |
413 | * Features Notification | |
414 | */ | |
415 | } | |
416 | ||
417 | if (lmp_le_capable(hdev)) | |
418 | events[7] |= 0x20; /* LE Meta-Event */ | |
419 | ||
42c6b129 | 420 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
421 | } |
422 | ||
a1d01db1 | 423 | static int hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 424 | { |
42c6b129 JH |
425 | struct hci_dev *hdev = req->hdev; |
426 | ||
0af801b9 JH |
427 | if (hdev->dev_type == HCI_AMP) |
428 | return amp_init2(req); | |
429 | ||
2177bab5 | 430 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 431 | bredr_setup(req); |
56f87901 | 432 | else |
a358dc11 | 433 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
434 | |
435 | if (lmp_le_capable(hdev)) | |
42c6b129 | 436 | le_setup(req); |
2177bab5 | 437 | |
0f3adeae MH |
438 | /* All Bluetooth 1.2 and later controllers should support the |
439 | * HCI command for reading the local supported commands. | |
440 | * | |
441 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
442 | * but do not have support for this command. If that is the case, | |
443 | * the driver can quirk the behavior and skip reading the local | |
444 | * supported commands. | |
3f8e2d75 | 445 | */ |
0f3adeae MH |
446 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
447 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 448 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
449 | |
450 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
451 | /* When SSP is available, then the host features page |
452 | * should also be available as well. However some | |
453 | * controllers list the max_page as 0 as long as SSP | |
454 | * has not been enabled. To achieve proper debugging | |
455 | * output, force the minimum max_page to 1 at least. | |
456 | */ | |
457 | hdev->max_page = 0x01; | |
458 | ||
d7a5a11d | 459 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 460 | u8 mode = 0x01; |
574ea3c7 | 461 | |
42c6b129 JH |
462 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
463 | sizeof(mode), &mode); | |
2177bab5 JH |
464 | } else { |
465 | struct hci_cp_write_eir cp; | |
466 | ||
467 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
468 | memset(&cp, 0, sizeof(cp)); | |
469 | ||
42c6b129 | 470 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
471 | } |
472 | } | |
473 | ||
043ec9bf MH |
474 | if (lmp_inq_rssi_capable(hdev) || |
475 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
476 | u8 mode; |
477 | ||
478 | /* If Extended Inquiry Result events are supported, then | |
479 | * they are clearly preferred over Inquiry Result with RSSI | |
480 | * events. | |
481 | */ | |
482 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
483 | ||
484 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
485 | } | |
2177bab5 JH |
486 | |
487 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 488 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
489 | |
490 | if (lmp_ext_feat_capable(hdev)) { | |
491 | struct hci_cp_read_local_ext_features cp; | |
492 | ||
493 | cp.page = 0x01; | |
42c6b129 JH |
494 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
495 | sizeof(cp), &cp); | |
2177bab5 JH |
496 | } |
497 | ||
d7a5a11d | 498 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 499 | u8 enable = 1; |
42c6b129 JH |
500 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
501 | &enable); | |
2177bab5 | 502 | } |
a1d01db1 JH |
503 | |
504 | return 0; | |
2177bab5 JH |
505 | } |
506 | ||
42c6b129 | 507 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 508 | { |
42c6b129 | 509 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
510 | struct hci_cp_write_def_link_policy cp; |
511 | u16 link_policy = 0; | |
512 | ||
513 | if (lmp_rswitch_capable(hdev)) | |
514 | link_policy |= HCI_LP_RSWITCH; | |
515 | if (lmp_hold_capable(hdev)) | |
516 | link_policy |= HCI_LP_HOLD; | |
517 | if (lmp_sniff_capable(hdev)) | |
518 | link_policy |= HCI_LP_SNIFF; | |
519 | if (lmp_park_capable(hdev)) | |
520 | link_policy |= HCI_LP_PARK; | |
521 | ||
522 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 523 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
524 | } |
525 | ||
42c6b129 | 526 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 527 | { |
42c6b129 | 528 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
529 | struct hci_cp_write_le_host_supported cp; |
530 | ||
c73eee91 JH |
531 | /* LE-only devices do not support explicit enablement */ |
532 | if (!lmp_bredr_capable(hdev)) | |
533 | return; | |
534 | ||
2177bab5 JH |
535 | memset(&cp, 0, sizeof(cp)); |
536 | ||
d7a5a11d | 537 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 538 | cp.le = 0x01; |
32226e4f | 539 | cp.simul = 0x00; |
2177bab5 JH |
540 | } |
541 | ||
542 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
543 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
544 | &cp); | |
2177bab5 JH |
545 | } |
546 | ||
d62e6d67 JH |
547 | static void hci_set_event_mask_page_2(struct hci_request *req) |
548 | { | |
549 | struct hci_dev *hdev = req->hdev; | |
550 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
551 | ||
552 | /* If Connectionless Slave Broadcast master role is supported | |
553 | * enable all necessary events for it. | |
554 | */ | |
53b834d2 | 555 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
556 | events[1] |= 0x40; /* Triggered Clock Capture */ |
557 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
558 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
559 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
560 | } | |
561 | ||
562 | /* If Connectionless Slave Broadcast slave role is supported | |
563 | * enable all necessary events for it. | |
564 | */ | |
53b834d2 | 565 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
566 | events[2] |= 0x01; /* Synchronization Train Received */ |
567 | events[2] |= 0x02; /* CSB Receive */ | |
568 | events[2] |= 0x04; /* CSB Timeout */ | |
569 | events[2] |= 0x08; /* Truncated Page Complete */ | |
570 | } | |
571 | ||
40c59fcb | 572 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 573 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
574 | events[2] |= 0x80; |
575 | ||
d62e6d67 JH |
576 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
577 | } | |
578 | ||
a1d01db1 | 579 | static int hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 580 | { |
42c6b129 | 581 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 582 | u8 p; |
42c6b129 | 583 | |
0da71f1b MH |
584 | hci_setup_event_mask(req); |
585 | ||
e81be90b JH |
586 | if (hdev->commands[6] & 0x20 && |
587 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
588 | struct hci_cp_read_stored_link_key cp; |
589 | ||
590 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
591 | cp.read_all = 0x01; | |
592 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
593 | } | |
594 | ||
2177bab5 | 595 | if (hdev->commands[5] & 0x10) |
42c6b129 | 596 | hci_setup_link_policy(req); |
2177bab5 | 597 | |
417287de MH |
598 | if (hdev->commands[8] & 0x01) |
599 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
600 | ||
601 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
602 | * support the Read Page Scan Type command. Check support for | |
603 | * this command in the bit mask of supported commands. | |
604 | */ | |
605 | if (hdev->commands[13] & 0x01) | |
606 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
607 | ||
9193c6e8 AG |
608 | if (lmp_le_capable(hdev)) { |
609 | u8 events[8]; | |
610 | ||
611 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
612 | |
613 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
614 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
615 | |
616 | /* If controller supports the Connection Parameters Request | |
617 | * Link Layer Procedure, enable the corresponding event. | |
618 | */ | |
619 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
620 | events[0] |= 0x20; /* LE Remote Connection | |
621 | * Parameter Request | |
622 | */ | |
623 | ||
a9f6068e MH |
624 | /* If the controller supports the Data Length Extension |
625 | * feature, enable the corresponding event. | |
626 | */ | |
627 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
628 | events[0] |= 0x40; /* LE Data Length Change */ | |
629 | ||
4b71bba4 MH |
630 | /* If the controller supports Extended Scanner Filter |
631 | * Policies, enable the correspondig event. | |
632 | */ | |
633 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
634 | events[1] |= 0x04; /* LE Direct Advertising | |
635 | * Report | |
636 | */ | |
637 | ||
7d26f5c4 MH |
638 | /* If the controller supports the LE Set Scan Enable command, |
639 | * enable the corresponding advertising report event. | |
640 | */ | |
641 | if (hdev->commands[26] & 0x08) | |
642 | events[0] |= 0x02; /* LE Advertising Report */ | |
643 | ||
644 | /* If the controller supports the LE Create Connection | |
645 | * command, enable the corresponding event. | |
646 | */ | |
647 | if (hdev->commands[26] & 0x10) | |
648 | events[0] |= 0x01; /* LE Connection Complete */ | |
649 | ||
650 | /* If the controller supports the LE Connection Update | |
651 | * command, enable the corresponding event. | |
652 | */ | |
653 | if (hdev->commands[27] & 0x04) | |
654 | events[0] |= 0x04; /* LE Connection Update | |
655 | * Complete | |
656 | */ | |
657 | ||
658 | /* If the controller supports the LE Read Remote Used Features | |
659 | * command, enable the corresponding event. | |
660 | */ | |
661 | if (hdev->commands[27] & 0x20) | |
662 | events[0] |= 0x08; /* LE Read Remote Used | |
663 | * Features Complete | |
664 | */ | |
665 | ||
5a34bd5f MH |
666 | /* If the controller supports the LE Read Local P-256 |
667 | * Public Key command, enable the corresponding event. | |
668 | */ | |
669 | if (hdev->commands[34] & 0x02) | |
670 | events[0] |= 0x80; /* LE Read Local P-256 | |
671 | * Public Key Complete | |
672 | */ | |
673 | ||
674 | /* If the controller supports the LE Generate DHKey | |
675 | * command, enable the corresponding event. | |
676 | */ | |
677 | if (hdev->commands[34] & 0x04) | |
678 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
679 | ||
9193c6e8 AG |
680 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
681 | events); | |
682 | ||
15a49cca MH |
683 | if (hdev->commands[25] & 0x40) { |
684 | /* Read LE Advertising Channel TX Power */ | |
685 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
686 | } | |
687 | ||
2ab216a7 MH |
688 | if (hdev->commands[26] & 0x40) { |
689 | /* Read LE White List Size */ | |
690 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, | |
691 | 0, NULL); | |
692 | } | |
693 | ||
694 | if (hdev->commands[26] & 0x80) { | |
695 | /* Clear LE White List */ | |
696 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
697 | } | |
698 | ||
a9f6068e MH |
699 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
700 | /* Read LE Maximum Data Length */ | |
701 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
702 | ||
703 | /* Read LE Suggested Default Data Length */ | |
704 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
705 | } | |
706 | ||
42c6b129 | 707 | hci_set_le_support(req); |
9193c6e8 | 708 | } |
d2c5d77f JH |
709 | |
710 | /* Read features beyond page 1 if available */ | |
711 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
712 | struct hci_cp_read_local_ext_features cp; | |
713 | ||
714 | cp.page = p; | |
715 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
716 | sizeof(cp), &cp); | |
717 | } | |
a1d01db1 JH |
718 | |
719 | return 0; | |
2177bab5 JH |
720 | } |
721 | ||
a1d01db1 | 722 | static int hci_init4_req(struct hci_request *req, unsigned long opt) |
5d4e7e8d JH |
723 | { |
724 | struct hci_dev *hdev = req->hdev; | |
725 | ||
36f260ce MH |
726 | /* Some Broadcom based Bluetooth controllers do not support the |
727 | * Delete Stored Link Key command. They are clearly indicating its | |
728 | * absence in the bit mask of supported commands. | |
729 | * | |
730 | * Check the supported commands and only if the the command is marked | |
731 | * as supported send it. If not supported assume that the controller | |
732 | * does not have actual support for stored link keys which makes this | |
733 | * command redundant anyway. | |
734 | * | |
735 | * Some controllers indicate that they support handling deleting | |
736 | * stored link keys, but they don't. The quirk lets a driver | |
737 | * just disable this command. | |
738 | */ | |
739 | if (hdev->commands[6] & 0x80 && | |
740 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
741 | struct hci_cp_delete_stored_link_key cp; | |
742 | ||
743 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
744 | cp.delete_all = 0x01; | |
745 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
746 | sizeof(cp), &cp); | |
747 | } | |
748 | ||
d62e6d67 JH |
749 | /* Set event mask page 2 if the HCI command for it is supported */ |
750 | if (hdev->commands[22] & 0x04) | |
751 | hci_set_event_mask_page_2(req); | |
752 | ||
109e3191 MH |
753 | /* Read local codec list if the HCI command is supported */ |
754 | if (hdev->commands[29] & 0x20) | |
755 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
756 | ||
f4fe73ed MH |
757 | /* Get MWS transport configuration if the HCI command is supported */ |
758 | if (hdev->commands[30] & 0x08) | |
759 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
760 | ||
5d4e7e8d | 761 | /* Check for Synchronization Train support */ |
53b834d2 | 762 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 763 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
764 | |
765 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 766 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 767 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 768 | u8 support = 0x01; |
574ea3c7 | 769 | |
a6d0d690 MH |
770 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
771 | sizeof(support), &support); | |
772 | } | |
a1d01db1 JH |
773 | |
774 | return 0; | |
5d4e7e8d JH |
775 | } |
776 | ||
2177bab5 JH |
777 | static int __hci_init(struct hci_dev *hdev) |
778 | { | |
779 | int err; | |
780 | ||
4ebeee2d | 781 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL); |
2177bab5 JH |
782 | if (err < 0) |
783 | return err; | |
784 | ||
f640ee98 MH |
785 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
786 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 787 | |
4ebeee2d | 788 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL); |
0af801b9 JH |
789 | if (err < 0) |
790 | return err; | |
791 | ||
ca8bee5d | 792 | /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode |
2177bab5 | 793 | * BR/EDR/LE type controllers. AMP controllers only need the |
0af801b9 | 794 | * first two stages of init. |
2177bab5 | 795 | */ |
ca8bee5d | 796 | if (hdev->dev_type != HCI_PRIMARY) |
2177bab5 JH |
797 | return 0; |
798 | ||
4ebeee2d | 799 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL); |
5d4e7e8d JH |
800 | if (err < 0) |
801 | return err; | |
802 | ||
4ebeee2d | 803 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL); |
baf27f6e MH |
804 | if (err < 0) |
805 | return err; | |
806 | ||
ec6cef9c MH |
807 | /* This function is only called when the controller is actually in |
808 | * configured state. When the controller is marked as unconfigured, | |
809 | * this initialization procedure is not run. | |
810 | * | |
811 | * It means that it is possible that a controller runs through its | |
812 | * setup phase and then discovers missing settings. If that is the | |
813 | * case, then this function will not be called. It then will only | |
814 | * be called during the config phase. | |
815 | * | |
816 | * So only when in setup phase or config phase, create the debugfs | |
817 | * entries and register the SMP channels. | |
baf27f6e | 818 | */ |
d7a5a11d MH |
819 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
820 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
821 | return 0; |
822 | ||
60c5f5fb MH |
823 | hci_debugfs_create_common(hdev); |
824 | ||
71c3b60e | 825 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 826 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 827 | |
162a3bac | 828 | if (lmp_le_capable(hdev)) |
60c5f5fb | 829 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 830 | |
baf27f6e | 831 | return 0; |
2177bab5 JH |
832 | } |
833 | ||
a1d01db1 | 834 | static int hci_init0_req(struct hci_request *req, unsigned long opt) |
0ebca7d6 MH |
835 | { |
836 | struct hci_dev *hdev = req->hdev; | |
837 | ||
838 | BT_DBG("%s %ld", hdev->name, opt); | |
839 | ||
840 | /* Reset */ | |
841 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
842 | hci_reset_req(req, 0); | |
843 | ||
844 | /* Read Local Version */ | |
845 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
846 | ||
847 | /* Read BD Address */ | |
848 | if (hdev->set_bdaddr) | |
849 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
a1d01db1 JH |
850 | |
851 | return 0; | |
0ebca7d6 MH |
852 | } |
853 | ||
854 | static int __hci_unconf_init(struct hci_dev *hdev) | |
855 | { | |
856 | int err; | |
857 | ||
cc78b44b MH |
858 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
859 | return 0; | |
860 | ||
4ebeee2d | 861 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL); |
0ebca7d6 MH |
862 | if (err < 0) |
863 | return err; | |
864 | ||
f640ee98 MH |
865 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
866 | hci_debugfs_create_basic(hdev); | |
867 | ||
0ebca7d6 MH |
868 | return 0; |
869 | } | |
870 | ||
a1d01db1 | 871 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
872 | { |
873 | __u8 scan = opt; | |
874 | ||
42c6b129 | 875 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
876 | |
877 | /* Inquiry and Page scans */ | |
42c6b129 | 878 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 879 | return 0; |
1da177e4 LT |
880 | } |
881 | ||
a1d01db1 | 882 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
883 | { |
884 | __u8 auth = opt; | |
885 | ||
42c6b129 | 886 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
887 | |
888 | /* Authentication */ | |
42c6b129 | 889 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 890 | return 0; |
1da177e4 LT |
891 | } |
892 | ||
a1d01db1 | 893 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
894 | { |
895 | __u8 encrypt = opt; | |
896 | ||
42c6b129 | 897 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 898 | |
e4e8e37c | 899 | /* Encryption */ |
42c6b129 | 900 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 901 | return 0; |
1da177e4 LT |
902 | } |
903 | ||
a1d01db1 | 904 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
905 | { |
906 | __le16 policy = cpu_to_le16(opt); | |
907 | ||
42c6b129 | 908 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
909 | |
910 | /* Default link policy */ | |
42c6b129 | 911 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 912 | return 0; |
e4e8e37c MH |
913 | } |
914 | ||
8e87d142 | 915 | /* Get HCI device by index. |
1da177e4 LT |
916 | * Device is held on return. */ |
917 | struct hci_dev *hci_dev_get(int index) | |
918 | { | |
8035ded4 | 919 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
920 | |
921 | BT_DBG("%d", index); | |
922 | ||
923 | if (index < 0) | |
924 | return NULL; | |
925 | ||
926 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 927 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
928 | if (d->id == index) { |
929 | hdev = hci_dev_hold(d); | |
930 | break; | |
931 | } | |
932 | } | |
933 | read_unlock(&hci_dev_list_lock); | |
934 | return hdev; | |
935 | } | |
1da177e4 LT |
936 | |
937 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 938 | |
30dc78e1 JH |
939 | bool hci_discovery_active(struct hci_dev *hdev) |
940 | { | |
941 | struct discovery_state *discov = &hdev->discovery; | |
942 | ||
6fbe195d | 943 | switch (discov->state) { |
343f935b | 944 | case DISCOVERY_FINDING: |
6fbe195d | 945 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
946 | return true; |
947 | ||
6fbe195d AG |
948 | default: |
949 | return false; | |
950 | } | |
30dc78e1 JH |
951 | } |
952 | ||
ff9ef578 JH |
953 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
954 | { | |
bb3e0a33 JH |
955 | int old_state = hdev->discovery.state; |
956 | ||
ff9ef578 JH |
957 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
958 | ||
bb3e0a33 | 959 | if (old_state == state) |
ff9ef578 JH |
960 | return; |
961 | ||
bb3e0a33 JH |
962 | hdev->discovery.state = state; |
963 | ||
ff9ef578 JH |
964 | switch (state) { |
965 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
966 | hci_update_background_scan(hdev); |
967 | ||
bb3e0a33 | 968 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 969 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
970 | break; |
971 | case DISCOVERY_STARTING: | |
972 | break; | |
343f935b | 973 | case DISCOVERY_FINDING: |
ff9ef578 JH |
974 | mgmt_discovering(hdev, 1); |
975 | break; | |
30dc78e1 JH |
976 | case DISCOVERY_RESOLVING: |
977 | break; | |
ff9ef578 JH |
978 | case DISCOVERY_STOPPING: |
979 | break; | |
980 | } | |
ff9ef578 JH |
981 | } |
982 | ||
1f9b9a5d | 983 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 984 | { |
30883512 | 985 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 986 | struct inquiry_entry *p, *n; |
1da177e4 | 987 | |
561aafbc JH |
988 | list_for_each_entry_safe(p, n, &cache->all, all) { |
989 | list_del(&p->all); | |
b57c1a56 | 990 | kfree(p); |
1da177e4 | 991 | } |
561aafbc JH |
992 | |
993 | INIT_LIST_HEAD(&cache->unknown); | |
994 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
995 | } |
996 | ||
a8c5fb1a GP |
997 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
998 | bdaddr_t *bdaddr) | |
1da177e4 | 999 | { |
30883512 | 1000 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1001 | struct inquiry_entry *e; |
1002 | ||
6ed93dc6 | 1003 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1004 | |
561aafbc JH |
1005 | list_for_each_entry(e, &cache->all, all) { |
1006 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1007 | return e; | |
1008 | } | |
1009 | ||
1010 | return NULL; | |
1011 | } | |
1012 | ||
1013 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1014 | bdaddr_t *bdaddr) |
561aafbc | 1015 | { |
30883512 | 1016 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1017 | struct inquiry_entry *e; |
1018 | ||
6ed93dc6 | 1019 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1020 | |
1021 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1022 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1023 | return e; |
1024 | } | |
1025 | ||
1026 | return NULL; | |
1da177e4 LT |
1027 | } |
1028 | ||
30dc78e1 | 1029 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1030 | bdaddr_t *bdaddr, |
1031 | int state) | |
30dc78e1 JH |
1032 | { |
1033 | struct discovery_state *cache = &hdev->discovery; | |
1034 | struct inquiry_entry *e; | |
1035 | ||
6ed93dc6 | 1036 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1037 | |
1038 | list_for_each_entry(e, &cache->resolve, list) { | |
1039 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1040 | return e; | |
1041 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1042 | return e; | |
1043 | } | |
1044 | ||
1045 | return NULL; | |
1046 | } | |
1047 | ||
a3d4e20a | 1048 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1049 | struct inquiry_entry *ie) |
a3d4e20a JH |
1050 | { |
1051 | struct discovery_state *cache = &hdev->discovery; | |
1052 | struct list_head *pos = &cache->resolve; | |
1053 | struct inquiry_entry *p; | |
1054 | ||
1055 | list_del(&ie->list); | |
1056 | ||
1057 | list_for_each_entry(p, &cache->resolve, list) { | |
1058 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1059 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1060 | break; |
1061 | pos = &p->list; | |
1062 | } | |
1063 | ||
1064 | list_add(&ie->list, pos); | |
1065 | } | |
1066 | ||
af58925c MH |
1067 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1068 | bool name_known) | |
1da177e4 | 1069 | { |
30883512 | 1070 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1071 | struct inquiry_entry *ie; |
af58925c | 1072 | u32 flags = 0; |
1da177e4 | 1073 | |
6ed93dc6 | 1074 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1075 | |
6928a924 | 1076 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1077 | |
af58925c MH |
1078 | if (!data->ssp_mode) |
1079 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1080 | |
70f23020 | 1081 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1082 | if (ie) { |
af58925c MH |
1083 | if (!ie->data.ssp_mode) |
1084 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1085 | |
a3d4e20a | 1086 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1087 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1088 | ie->data.rssi = data->rssi; |
1089 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1090 | } | |
1091 | ||
561aafbc | 1092 | goto update; |
a3d4e20a | 1093 | } |
561aafbc JH |
1094 | |
1095 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1096 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1097 | if (!ie) { |
1098 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1099 | goto done; | |
1100 | } | |
561aafbc JH |
1101 | |
1102 | list_add(&ie->all, &cache->all); | |
1103 | ||
1104 | if (name_known) { | |
1105 | ie->name_state = NAME_KNOWN; | |
1106 | } else { | |
1107 | ie->name_state = NAME_NOT_KNOWN; | |
1108 | list_add(&ie->list, &cache->unknown); | |
1109 | } | |
70f23020 | 1110 | |
561aafbc JH |
1111 | update: |
1112 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1113 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1114 | ie->name_state = NAME_KNOWN; |
1115 | list_del(&ie->list); | |
1da177e4 LT |
1116 | } |
1117 | ||
70f23020 AE |
1118 | memcpy(&ie->data, data, sizeof(*data)); |
1119 | ie->timestamp = jiffies; | |
1da177e4 | 1120 | cache->timestamp = jiffies; |
3175405b JH |
1121 | |
1122 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1123 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1124 | |
af58925c MH |
1125 | done: |
1126 | return flags; | |
1da177e4 LT |
1127 | } |
1128 | ||
1129 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1130 | { | |
30883512 | 1131 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1132 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1133 | struct inquiry_entry *e; | |
1134 | int copied = 0; | |
1135 | ||
561aafbc | 1136 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1137 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1138 | |
1139 | if (copied >= num) | |
1140 | break; | |
1141 | ||
1da177e4 LT |
1142 | bacpy(&info->bdaddr, &data->bdaddr); |
1143 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1144 | info->pscan_period_mode = data->pscan_period_mode; | |
1145 | info->pscan_mode = data->pscan_mode; | |
1146 | memcpy(info->dev_class, data->dev_class, 3); | |
1147 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1148 | |
1da177e4 | 1149 | info++; |
b57c1a56 | 1150 | copied++; |
1da177e4 LT |
1151 | } |
1152 | ||
1153 | BT_DBG("cache %p, copied %d", cache, copied); | |
1154 | return copied; | |
1155 | } | |
1156 | ||
a1d01db1 | 1157 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1158 | { |
1159 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1160 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1161 | struct hci_cp_inquiry cp; |
1162 | ||
1163 | BT_DBG("%s", hdev->name); | |
1164 | ||
1165 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 1166 | return 0; |
1da177e4 LT |
1167 | |
1168 | /* Start Inquiry */ | |
1169 | memcpy(&cp.lap, &ir->lap, 3); | |
1170 | cp.length = ir->length; | |
1171 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1172 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
1173 | |
1174 | return 0; | |
1da177e4 LT |
1175 | } |
1176 | ||
1177 | int hci_inquiry(void __user *arg) | |
1178 | { | |
1179 | __u8 __user *ptr = arg; | |
1180 | struct hci_inquiry_req ir; | |
1181 | struct hci_dev *hdev; | |
1182 | int err = 0, do_inquiry = 0, max_rsp; | |
1183 | long timeo; | |
1184 | __u8 *buf; | |
1185 | ||
1186 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1187 | return -EFAULT; | |
1188 | ||
5a08ecce AE |
1189 | hdev = hci_dev_get(ir.dev_id); |
1190 | if (!hdev) | |
1da177e4 LT |
1191 | return -ENODEV; |
1192 | ||
d7a5a11d | 1193 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1194 | err = -EBUSY; |
1195 | goto done; | |
1196 | } | |
1197 | ||
d7a5a11d | 1198 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1199 | err = -EOPNOTSUPP; |
1200 | goto done; | |
1201 | } | |
1202 | ||
ca8bee5d | 1203 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1204 | err = -EOPNOTSUPP; |
1205 | goto done; | |
1206 | } | |
1207 | ||
d7a5a11d | 1208 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1209 | err = -EOPNOTSUPP; |
1210 | goto done; | |
1211 | } | |
1212 | ||
09fd0de5 | 1213 | hci_dev_lock(hdev); |
8e87d142 | 1214 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1215 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1216 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1217 | do_inquiry = 1; |
1218 | } | |
09fd0de5 | 1219 | hci_dev_unlock(hdev); |
1da177e4 | 1220 | |
04837f64 | 1221 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1222 | |
1223 | if (do_inquiry) { | |
01178cd4 | 1224 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 1225 | timeo, NULL); |
70f23020 AE |
1226 | if (err < 0) |
1227 | goto done; | |
3e13fa1e AG |
1228 | |
1229 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1230 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1231 | */ | |
74316201 | 1232 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1233 | TASK_INTERRUPTIBLE)) |
1234 | return -EINTR; | |
70f23020 | 1235 | } |
1da177e4 | 1236 | |
8fc9ced3 GP |
1237 | /* for unlimited number of responses we will use buffer with |
1238 | * 255 entries | |
1239 | */ | |
1da177e4 LT |
1240 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1241 | ||
1242 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1243 | * copy it to the user space. | |
1244 | */ | |
01df8c31 | 1245 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1246 | if (!buf) { |
1da177e4 LT |
1247 | err = -ENOMEM; |
1248 | goto done; | |
1249 | } | |
1250 | ||
09fd0de5 | 1251 | hci_dev_lock(hdev); |
1da177e4 | 1252 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1253 | hci_dev_unlock(hdev); |
1da177e4 LT |
1254 | |
1255 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1256 | ||
1257 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1258 | ptr += sizeof(ir); | |
1259 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1260 | ir.num_rsp)) |
1da177e4 | 1261 | err = -EFAULT; |
8e87d142 | 1262 | } else |
1da177e4 LT |
1263 | err = -EFAULT; |
1264 | ||
1265 | kfree(buf); | |
1266 | ||
1267 | done: | |
1268 | hci_dev_put(hdev); | |
1269 | return err; | |
1270 | } | |
1271 | ||
cbed0ca1 | 1272 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1273 | { |
1da177e4 LT |
1274 | int ret = 0; |
1275 | ||
1da177e4 LT |
1276 | BT_DBG("%s %p", hdev->name, hdev); |
1277 | ||
b504430c | 1278 | hci_req_sync_lock(hdev); |
1da177e4 | 1279 | |
d7a5a11d | 1280 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1281 | ret = -ENODEV; |
1282 | goto done; | |
1283 | } | |
1284 | ||
d7a5a11d MH |
1285 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1286 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1287 | /* Check for rfkill but allow the HCI setup stage to |
1288 | * proceed (which in itself doesn't cause any RF activity). | |
1289 | */ | |
d7a5a11d | 1290 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1291 | ret = -ERFKILL; |
1292 | goto done; | |
1293 | } | |
1294 | ||
1295 | /* Check for valid public address or a configured static | |
1296 | * random adddress, but let the HCI setup proceed to | |
1297 | * be able to determine if there is a public address | |
1298 | * or not. | |
1299 | * | |
c6beca0e MH |
1300 | * In case of user channel usage, it is not important |
1301 | * if a public address or static random address is | |
1302 | * available. | |
1303 | * | |
a5c8f270 MH |
1304 | * This check is only valid for BR/EDR controllers |
1305 | * since AMP controllers do not have an address. | |
1306 | */ | |
d7a5a11d | 1307 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
ca8bee5d | 1308 | hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
1309 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1310 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1311 | ret = -EADDRNOTAVAIL; | |
1312 | goto done; | |
1313 | } | |
611b30f7 MH |
1314 | } |
1315 | ||
1da177e4 LT |
1316 | if (test_bit(HCI_UP, &hdev->flags)) { |
1317 | ret = -EALREADY; | |
1318 | goto done; | |
1319 | } | |
1320 | ||
1da177e4 LT |
1321 | if (hdev->open(hdev)) { |
1322 | ret = -EIO; | |
1323 | goto done; | |
1324 | } | |
1325 | ||
e9ca8bf1 | 1326 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1327 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1328 | |
f41c70c4 MH |
1329 | atomic_set(&hdev->cmd_cnt, 1); |
1330 | set_bit(HCI_INIT, &hdev->flags); | |
1331 | ||
d7a5a11d | 1332 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
e131d74a MH |
1333 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1334 | ||
af202f84 MH |
1335 | if (hdev->setup) |
1336 | ret = hdev->setup(hdev); | |
f41c70c4 | 1337 | |
af202f84 MH |
1338 | /* The transport driver can set these quirks before |
1339 | * creating the HCI device or in its setup callback. | |
1340 | * | |
1341 | * In case any of them is set, the controller has to | |
1342 | * start up as unconfigured. | |
1343 | */ | |
eb1904f4 MH |
1344 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1345 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1346 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1347 | |
0ebca7d6 MH |
1348 | /* For an unconfigured controller it is required to |
1349 | * read at least the version information provided by | |
1350 | * the Read Local Version Information command. | |
1351 | * | |
1352 | * If the set_bdaddr driver callback is provided, then | |
1353 | * also the original Bluetooth public device address | |
1354 | * will be read using the Read BD Address command. | |
1355 | */ | |
d7a5a11d | 1356 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1357 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1358 | } |
1359 | ||
d7a5a11d | 1360 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1361 | /* If public address change is configured, ensure that |
1362 | * the address gets programmed. If the driver does not | |
1363 | * support changing the public address, fail the power | |
1364 | * on procedure. | |
1365 | */ | |
1366 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1367 | hdev->set_bdaddr) | |
24c457e2 MH |
1368 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1369 | else | |
1370 | ret = -EADDRNOTAVAIL; | |
1371 | } | |
1372 | ||
f41c70c4 | 1373 | if (!ret) { |
d7a5a11d | 1374 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1375 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1376 | ret = __hci_init(hdev); |
98a63aaf MH |
1377 | if (!ret && hdev->post_init) |
1378 | ret = hdev->post_init(hdev); | |
1379 | } | |
1da177e4 LT |
1380 | } |
1381 | ||
7e995b9e MH |
1382 | /* If the HCI Reset command is clearing all diagnostic settings, |
1383 | * then they need to be reprogrammed after the init procedure | |
1384 | * completed. | |
1385 | */ | |
1386 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
1387 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) | |
1388 | ret = hdev->set_diag(hdev, true); | |
1389 | ||
f41c70c4 MH |
1390 | clear_bit(HCI_INIT, &hdev->flags); |
1391 | ||
1da177e4 LT |
1392 | if (!ret) { |
1393 | hci_dev_hold(hdev); | |
a1536da2 | 1394 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 | 1395 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1396 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
6d5d2ee6 | 1397 | hci_leds_update_powered(hdev, true); |
d7a5a11d MH |
1398 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1399 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1400 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1401 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
2ff13894 | 1402 | hci_dev_test_flag(hdev, HCI_MGMT) && |
ca8bee5d | 1403 | hdev->dev_type == HCI_PRIMARY) { |
2ff13894 JH |
1404 | ret = __hci_req_hci_power_on(hdev); |
1405 | mgmt_power_on(hdev, ret); | |
56e5cb86 | 1406 | } |
8e87d142 | 1407 | } else { |
1da177e4 | 1408 | /* Init failed, cleanup */ |
3eff45ea | 1409 | flush_work(&hdev->tx_work); |
c347b765 | 1410 | flush_work(&hdev->cmd_work); |
b78752cc | 1411 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1412 | |
1413 | skb_queue_purge(&hdev->cmd_q); | |
1414 | skb_queue_purge(&hdev->rx_q); | |
1415 | ||
1416 | if (hdev->flush) | |
1417 | hdev->flush(hdev); | |
1418 | ||
1419 | if (hdev->sent_cmd) { | |
1420 | kfree_skb(hdev->sent_cmd); | |
1421 | hdev->sent_cmd = NULL; | |
1422 | } | |
1423 | ||
e9ca8bf1 | 1424 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1425 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1426 | |
1da177e4 | 1427 | hdev->close(hdev); |
fee746b0 | 1428 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | done: | |
b504430c | 1432 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1433 | return ret; |
1434 | } | |
1435 | ||
cbed0ca1 JH |
1436 | /* ---- HCI ioctl helpers ---- */ |
1437 | ||
1438 | int hci_dev_open(__u16 dev) | |
1439 | { | |
1440 | struct hci_dev *hdev; | |
1441 | int err; | |
1442 | ||
1443 | hdev = hci_dev_get(dev); | |
1444 | if (!hdev) | |
1445 | return -ENODEV; | |
1446 | ||
4a964404 | 1447 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1448 | * up as user channel. Trying to bring them up as normal devices |
1449 | * will result into a failure. Only user channel operation is | |
1450 | * possible. | |
1451 | * | |
1452 | * When this function is called for a user channel, the flag | |
1453 | * HCI_USER_CHANNEL will be set first before attempting to | |
1454 | * open the device. | |
1455 | */ | |
d7a5a11d MH |
1456 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1457 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1458 | err = -EOPNOTSUPP; |
1459 | goto done; | |
1460 | } | |
1461 | ||
e1d08f40 JH |
1462 | /* We need to ensure that no other power on/off work is pending |
1463 | * before proceeding to call hci_dev_do_open. This is | |
1464 | * particularly important if the setup procedure has not yet | |
1465 | * completed. | |
1466 | */ | |
a69d8927 | 1467 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1468 | cancel_delayed_work(&hdev->power_off); |
1469 | ||
a5c8f270 MH |
1470 | /* After this call it is guaranteed that the setup procedure |
1471 | * has finished. This means that error conditions like RFKILL | |
1472 | * or no valid public or static random address apply. | |
1473 | */ | |
e1d08f40 JH |
1474 | flush_workqueue(hdev->req_workqueue); |
1475 | ||
12aa4f0a | 1476 | /* For controllers not using the management interface and that |
b6ae8457 | 1477 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1478 | * so that pairing works for them. Once the management interface |
1479 | * is in use this bit will be cleared again and userspace has | |
1480 | * to explicitly enable it. | |
1481 | */ | |
d7a5a11d MH |
1482 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1483 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1484 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1485 | |
cbed0ca1 JH |
1486 | err = hci_dev_do_open(hdev); |
1487 | ||
fee746b0 | 1488 | done: |
cbed0ca1 | 1489 | hci_dev_put(hdev); |
cbed0ca1 JH |
1490 | return err; |
1491 | } | |
1492 | ||
d7347f3c JH |
1493 | /* This function requires the caller holds hdev->lock */ |
1494 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1495 | { | |
1496 | struct hci_conn_params *p; | |
1497 | ||
f161dd41 JH |
1498 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1499 | if (p->conn) { | |
1500 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1501 | hci_conn_put(p->conn); |
f161dd41 JH |
1502 | p->conn = NULL; |
1503 | } | |
d7347f3c | 1504 | list_del_init(&p->action); |
f161dd41 | 1505 | } |
d7347f3c JH |
1506 | |
1507 | BT_DBG("All LE pending actions cleared"); | |
1508 | } | |
1509 | ||
6b3cc1db | 1510 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1511 | { |
acc649c6 MH |
1512 | bool auto_off; |
1513 | ||
1da177e4 LT |
1514 | BT_DBG("%s %p", hdev->name, hdev); |
1515 | ||
d24d8144 | 1516 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1517 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1518 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1519 | /* Execute vendor specific shutdown routine */ |
1520 | if (hdev->shutdown) | |
1521 | hdev->shutdown(hdev); | |
1522 | } | |
1523 | ||
78c04c0b VCG |
1524 | cancel_delayed_work(&hdev->power_off); |
1525 | ||
7df0f73e | 1526 | hci_request_cancel_all(hdev); |
b504430c | 1527 | hci_req_sync_lock(hdev); |
1da177e4 LT |
1528 | |
1529 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1530 | cancel_delayed_work_sync(&hdev->cmd_timer); |
b504430c | 1531 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1532 | return 0; |
1533 | } | |
1534 | ||
6d5d2ee6 HK |
1535 | hci_leds_update_powered(hdev, false); |
1536 | ||
3eff45ea GP |
1537 | /* Flush RX and TX works */ |
1538 | flush_work(&hdev->tx_work); | |
b78752cc | 1539 | flush_work(&hdev->rx_work); |
1da177e4 | 1540 | |
16ab91ab | 1541 | if (hdev->discov_timeout > 0) { |
16ab91ab | 1542 | hdev->discov_timeout = 0; |
a358dc11 MH |
1543 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1544 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1545 | } |
1546 | ||
a69d8927 | 1547 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1548 | cancel_delayed_work(&hdev->service_cache); |
1549 | ||
d7a5a11d | 1550 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1551 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1552 | |
76727c02 JH |
1553 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1554 | * ensuring the workqueue is empty up front. | |
1555 | */ | |
1556 | drain_workqueue(hdev->workqueue); | |
1557 | ||
09fd0de5 | 1558 | hci_dev_lock(hdev); |
1aeb9c65 | 1559 | |
8f502f84 JH |
1560 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1561 | ||
acc649c6 MH |
1562 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1563 | ||
ca8bee5d | 1564 | if (!auto_off && hdev->dev_type == HCI_PRIMARY && |
8ae8e264 | 1565 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
2ff13894 JH |
1566 | hci_dev_test_flag(hdev, HCI_MGMT)) |
1567 | __mgmt_power_off(hdev); | |
1aeb9c65 | 1568 | |
1f9b9a5d | 1569 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1570 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1571 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1572 | hci_dev_unlock(hdev); |
1da177e4 | 1573 | |
64dae967 MH |
1574 | smp_unregister(hdev); |
1575 | ||
05fcd4c4 | 1576 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1577 | |
1578 | if (hdev->flush) | |
1579 | hdev->flush(hdev); | |
1580 | ||
1581 | /* Reset device */ | |
1582 | skb_queue_purge(&hdev->cmd_q); | |
1583 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1584 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1585 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1586 | set_bit(HCI_INIT, &hdev->flags); |
4ebeee2d | 1587 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL); |
1da177e4 LT |
1588 | clear_bit(HCI_INIT, &hdev->flags); |
1589 | } | |
1590 | ||
c347b765 GP |
1591 | /* flush cmd work */ |
1592 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1593 | |
1594 | /* Drop queues */ | |
1595 | skb_queue_purge(&hdev->rx_q); | |
1596 | skb_queue_purge(&hdev->cmd_q); | |
1597 | skb_queue_purge(&hdev->raw_q); | |
1598 | ||
1599 | /* Drop last sent command */ | |
1600 | if (hdev->sent_cmd) { | |
65cc2b49 | 1601 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1602 | kfree_skb(hdev->sent_cmd); |
1603 | hdev->sent_cmd = NULL; | |
1604 | } | |
1605 | ||
e9ca8bf1 | 1606 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1607 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1608 | |
1da177e4 LT |
1609 | /* After this point our queues are empty |
1610 | * and no tasks are scheduled. */ | |
1611 | hdev->close(hdev); | |
1612 | ||
35b973c9 | 1613 | /* Clear flags */ |
fee746b0 | 1614 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1615 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1616 | |
ced5c338 | 1617 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1618 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1619 | |
e59fda8d | 1620 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1621 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1622 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1623 | |
b504430c | 1624 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1625 | |
1626 | hci_dev_put(hdev); | |
1627 | return 0; | |
1628 | } | |
1629 | ||
1630 | int hci_dev_close(__u16 dev) | |
1631 | { | |
1632 | struct hci_dev *hdev; | |
1633 | int err; | |
1634 | ||
70f23020 AE |
1635 | hdev = hci_dev_get(dev); |
1636 | if (!hdev) | |
1da177e4 | 1637 | return -ENODEV; |
8ee56540 | 1638 | |
d7a5a11d | 1639 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1640 | err = -EBUSY; |
1641 | goto done; | |
1642 | } | |
1643 | ||
a69d8927 | 1644 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1645 | cancel_delayed_work(&hdev->power_off); |
1646 | ||
1da177e4 | 1647 | err = hci_dev_do_close(hdev); |
8ee56540 | 1648 | |
0736cfa8 | 1649 | done: |
1da177e4 LT |
1650 | hci_dev_put(hdev); |
1651 | return err; | |
1652 | } | |
1653 | ||
5c912495 | 1654 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1655 | { |
5c912495 | 1656 | int ret; |
1da177e4 | 1657 | |
5c912495 | 1658 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 1659 | |
b504430c | 1660 | hci_req_sync_lock(hdev); |
1da177e4 | 1661 | |
1da177e4 LT |
1662 | /* Drop queues */ |
1663 | skb_queue_purge(&hdev->rx_q); | |
1664 | skb_queue_purge(&hdev->cmd_q); | |
1665 | ||
76727c02 JH |
1666 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1667 | * ensuring the workqueue is empty up front. | |
1668 | */ | |
1669 | drain_workqueue(hdev->workqueue); | |
1670 | ||
09fd0de5 | 1671 | hci_dev_lock(hdev); |
1f9b9a5d | 1672 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1673 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1674 | hci_dev_unlock(hdev); |
1da177e4 LT |
1675 | |
1676 | if (hdev->flush) | |
1677 | hdev->flush(hdev); | |
1678 | ||
8e87d142 | 1679 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1680 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1681 | |
4ebeee2d | 1682 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL); |
1da177e4 | 1683 | |
b504430c | 1684 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1685 | return ret; |
1686 | } | |
1687 | ||
5c912495 MH |
1688 | int hci_dev_reset(__u16 dev) |
1689 | { | |
1690 | struct hci_dev *hdev; | |
1691 | int err; | |
1692 | ||
1693 | hdev = hci_dev_get(dev); | |
1694 | if (!hdev) | |
1695 | return -ENODEV; | |
1696 | ||
1697 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1698 | err = -ENETDOWN; | |
1699 | goto done; | |
1700 | } | |
1701 | ||
d7a5a11d | 1702 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1703 | err = -EBUSY; |
1704 | goto done; | |
1705 | } | |
1706 | ||
d7a5a11d | 1707 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1708 | err = -EOPNOTSUPP; |
1709 | goto done; | |
1710 | } | |
1711 | ||
1712 | err = hci_dev_do_reset(hdev); | |
1713 | ||
1714 | done: | |
1715 | hci_dev_put(hdev); | |
1716 | return err; | |
1717 | } | |
1718 | ||
1da177e4 LT |
1719 | int hci_dev_reset_stat(__u16 dev) |
1720 | { | |
1721 | struct hci_dev *hdev; | |
1722 | int ret = 0; | |
1723 | ||
70f23020 AE |
1724 | hdev = hci_dev_get(dev); |
1725 | if (!hdev) | |
1da177e4 LT |
1726 | return -ENODEV; |
1727 | ||
d7a5a11d | 1728 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1729 | ret = -EBUSY; |
1730 | goto done; | |
1731 | } | |
1732 | ||
d7a5a11d | 1733 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1734 | ret = -EOPNOTSUPP; |
1735 | goto done; | |
1736 | } | |
1737 | ||
1da177e4 LT |
1738 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1739 | ||
0736cfa8 | 1740 | done: |
1da177e4 | 1741 | hci_dev_put(hdev); |
1da177e4 LT |
1742 | return ret; |
1743 | } | |
1744 | ||
123abc08 JH |
1745 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1746 | { | |
bc6d2d04 | 1747 | bool conn_changed, discov_changed; |
123abc08 JH |
1748 | |
1749 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1750 | ||
1751 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1752 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1753 | HCI_CONNECTABLE); | |
123abc08 | 1754 | else |
a69d8927 MH |
1755 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1756 | HCI_CONNECTABLE); | |
123abc08 | 1757 | |
bc6d2d04 | 1758 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1759 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1760 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1761 | } else { |
a358dc11 | 1762 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1763 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1764 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1765 | } |
1766 | ||
d7a5a11d | 1767 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1768 | return; |
1769 | ||
bc6d2d04 JH |
1770 | if (conn_changed || discov_changed) { |
1771 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1772 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1773 | |
d7a5a11d | 1774 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
cab054ab | 1775 | hci_req_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 1776 | |
123abc08 | 1777 | mgmt_new_settings(hdev); |
bc6d2d04 | 1778 | } |
123abc08 JH |
1779 | } |
1780 | ||
1da177e4 LT |
1781 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1782 | { | |
1783 | struct hci_dev *hdev; | |
1784 | struct hci_dev_req dr; | |
1785 | int err = 0; | |
1786 | ||
1787 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1788 | return -EFAULT; | |
1789 | ||
70f23020 AE |
1790 | hdev = hci_dev_get(dr.dev_id); |
1791 | if (!hdev) | |
1da177e4 LT |
1792 | return -ENODEV; |
1793 | ||
d7a5a11d | 1794 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1795 | err = -EBUSY; |
1796 | goto done; | |
1797 | } | |
1798 | ||
d7a5a11d | 1799 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1800 | err = -EOPNOTSUPP; |
1801 | goto done; | |
1802 | } | |
1803 | ||
ca8bee5d | 1804 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1805 | err = -EOPNOTSUPP; |
1806 | goto done; | |
1807 | } | |
1808 | ||
d7a5a11d | 1809 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1810 | err = -EOPNOTSUPP; |
1811 | goto done; | |
1812 | } | |
1813 | ||
1da177e4 LT |
1814 | switch (cmd) { |
1815 | case HCISETAUTH: | |
01178cd4 | 1816 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1817 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1818 | break; |
1819 | ||
1820 | case HCISETENCRYPT: | |
1821 | if (!lmp_encrypt_capable(hdev)) { | |
1822 | err = -EOPNOTSUPP; | |
1823 | break; | |
1824 | } | |
1825 | ||
1826 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1827 | /* Auth must be enabled first */ | |
01178cd4 | 1828 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1829 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1830 | if (err) |
1831 | break; | |
1832 | } | |
1833 | ||
01178cd4 | 1834 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 1835 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1836 | break; |
1837 | ||
1838 | case HCISETSCAN: | |
01178cd4 | 1839 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 1840 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 1841 | |
bc6d2d04 JH |
1842 | /* Ensure that the connectable and discoverable states |
1843 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1844 | */ |
123abc08 JH |
1845 | if (!err) |
1846 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1847 | break; |
1848 | ||
1da177e4 | 1849 | case HCISETLINKPOL: |
01178cd4 | 1850 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 1851 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1852 | break; |
1853 | ||
1854 | case HCISETLINKMODE: | |
e4e8e37c MH |
1855 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1856 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1857 | break; | |
1858 | ||
1859 | case HCISETPTYPE: | |
1860 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1861 | break; |
1862 | ||
1863 | case HCISETACLMTU: | |
e4e8e37c MH |
1864 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1865 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1866 | break; |
1867 | ||
1868 | case HCISETSCOMTU: | |
e4e8e37c MH |
1869 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1870 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1871 | break; |
1872 | ||
1873 | default: | |
1874 | err = -EINVAL; | |
1875 | break; | |
1876 | } | |
e4e8e37c | 1877 | |
0736cfa8 | 1878 | done: |
1da177e4 LT |
1879 | hci_dev_put(hdev); |
1880 | return err; | |
1881 | } | |
1882 | ||
1883 | int hci_get_dev_list(void __user *arg) | |
1884 | { | |
8035ded4 | 1885 | struct hci_dev *hdev; |
1da177e4 LT |
1886 | struct hci_dev_list_req *dl; |
1887 | struct hci_dev_req *dr; | |
1da177e4 LT |
1888 | int n = 0, size, err; |
1889 | __u16 dev_num; | |
1890 | ||
1891 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1892 | return -EFAULT; | |
1893 | ||
1894 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1895 | return -EINVAL; | |
1896 | ||
1897 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1898 | ||
70f23020 AE |
1899 | dl = kzalloc(size, GFP_KERNEL); |
1900 | if (!dl) | |
1da177e4 LT |
1901 | return -ENOMEM; |
1902 | ||
1903 | dr = dl->dev_req; | |
1904 | ||
f20d09d5 | 1905 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1906 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1907 | unsigned long flags = hdev->flags; |
c542a06c | 1908 | |
2e84d8db MH |
1909 | /* When the auto-off is configured it means the transport |
1910 | * is running, but in that case still indicate that the | |
1911 | * device is actually down. | |
1912 | */ | |
d7a5a11d | 1913 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1914 | flags &= ~BIT(HCI_UP); |
c542a06c | 1915 | |
1da177e4 | 1916 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1917 | (dr + n)->dev_opt = flags; |
c542a06c | 1918 | |
1da177e4 LT |
1919 | if (++n >= dev_num) |
1920 | break; | |
1921 | } | |
f20d09d5 | 1922 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1923 | |
1924 | dl->dev_num = n; | |
1925 | size = sizeof(*dl) + n * sizeof(*dr); | |
1926 | ||
1927 | err = copy_to_user(arg, dl, size); | |
1928 | kfree(dl); | |
1929 | ||
1930 | return err ? -EFAULT : 0; | |
1931 | } | |
1932 | ||
1933 | int hci_get_dev_info(void __user *arg) | |
1934 | { | |
1935 | struct hci_dev *hdev; | |
1936 | struct hci_dev_info di; | |
2e84d8db | 1937 | unsigned long flags; |
1da177e4 LT |
1938 | int err = 0; |
1939 | ||
1940 | if (copy_from_user(&di, arg, sizeof(di))) | |
1941 | return -EFAULT; | |
1942 | ||
70f23020 AE |
1943 | hdev = hci_dev_get(di.dev_id); |
1944 | if (!hdev) | |
1da177e4 LT |
1945 | return -ENODEV; |
1946 | ||
2e84d8db MH |
1947 | /* When the auto-off is configured it means the transport |
1948 | * is running, but in that case still indicate that the | |
1949 | * device is actually down. | |
1950 | */ | |
d7a5a11d | 1951 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1952 | flags = hdev->flags & ~BIT(HCI_UP); |
1953 | else | |
1954 | flags = hdev->flags; | |
c542a06c | 1955 | |
1da177e4 LT |
1956 | strcpy(di.name, hdev->name); |
1957 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1958 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 1959 | di.flags = flags; |
1da177e4 | 1960 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
1961 | if (lmp_bredr_capable(hdev)) { |
1962 | di.acl_mtu = hdev->acl_mtu; | |
1963 | di.acl_pkts = hdev->acl_pkts; | |
1964 | di.sco_mtu = hdev->sco_mtu; | |
1965 | di.sco_pkts = hdev->sco_pkts; | |
1966 | } else { | |
1967 | di.acl_mtu = hdev->le_mtu; | |
1968 | di.acl_pkts = hdev->le_pkts; | |
1969 | di.sco_mtu = 0; | |
1970 | di.sco_pkts = 0; | |
1971 | } | |
1da177e4 LT |
1972 | di.link_policy = hdev->link_policy; |
1973 | di.link_mode = hdev->link_mode; | |
1974 | ||
1975 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1976 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1977 | ||
1978 | if (copy_to_user(arg, &di, sizeof(di))) | |
1979 | err = -EFAULT; | |
1980 | ||
1981 | hci_dev_put(hdev); | |
1982 | ||
1983 | return err; | |
1984 | } | |
1985 | ||
1986 | /* ---- Interface to HCI drivers ---- */ | |
1987 | ||
611b30f7 MH |
1988 | static int hci_rfkill_set_block(void *data, bool blocked) |
1989 | { | |
1990 | struct hci_dev *hdev = data; | |
1991 | ||
1992 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1993 | ||
d7a5a11d | 1994 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
1995 | return -EBUSY; |
1996 | ||
5e130367 | 1997 | if (blocked) { |
a1536da2 | 1998 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
1999 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2000 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2001 | hci_dev_do_close(hdev); |
5e130367 | 2002 | } else { |
a358dc11 | 2003 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2004 | } |
611b30f7 MH |
2005 | |
2006 | return 0; | |
2007 | } | |
2008 | ||
2009 | static const struct rfkill_ops hci_rfkill_ops = { | |
2010 | .set_block = hci_rfkill_set_block, | |
2011 | }; | |
2012 | ||
ab81cbf9 JH |
2013 | static void hci_power_on(struct work_struct *work) |
2014 | { | |
2015 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2016 | int err; |
ab81cbf9 JH |
2017 | |
2018 | BT_DBG("%s", hdev->name); | |
2019 | ||
2ff13894 JH |
2020 | if (test_bit(HCI_UP, &hdev->flags) && |
2021 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
2022 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 2023 | cancel_delayed_work(&hdev->power_off); |
2ff13894 JH |
2024 | hci_req_sync_lock(hdev); |
2025 | err = __hci_req_hci_power_on(hdev); | |
2026 | hci_req_sync_unlock(hdev); | |
2027 | mgmt_power_on(hdev, err); | |
2028 | return; | |
2029 | } | |
2030 | ||
cbed0ca1 | 2031 | err = hci_dev_do_open(hdev); |
96570ffc | 2032 | if (err < 0) { |
3ad67582 | 2033 | hci_dev_lock(hdev); |
96570ffc | 2034 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2035 | hci_dev_unlock(hdev); |
ab81cbf9 | 2036 | return; |
96570ffc | 2037 | } |
ab81cbf9 | 2038 | |
a5c8f270 MH |
2039 | /* During the HCI setup phase, a few error conditions are |
2040 | * ignored and they need to be checked now. If they are still | |
2041 | * valid, it is important to turn the device back off. | |
2042 | */ | |
d7a5a11d MH |
2043 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2044 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
ca8bee5d | 2045 | (hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
2046 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2047 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2048 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2049 | hci_dev_do_close(hdev); |
d7a5a11d | 2050 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2051 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2052 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2053 | } |
ab81cbf9 | 2054 | |
a69d8927 | 2055 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2056 | /* For unconfigured devices, set the HCI_RAW flag |
2057 | * so that userspace can easily identify them. | |
4a964404 | 2058 | */ |
d7a5a11d | 2059 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2060 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2061 | |
2062 | /* For fully configured devices, this will send | |
2063 | * the Index Added event. For unconfigured devices, | |
2064 | * it will send Unconfigued Index Added event. | |
2065 | * | |
2066 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2067 | * and no event will be send. | |
2068 | */ | |
2069 | mgmt_index_added(hdev); | |
a69d8927 | 2070 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2071 | /* When the controller is now configured, then it |
2072 | * is important to clear the HCI_RAW flag. | |
2073 | */ | |
d7a5a11d | 2074 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2075 | clear_bit(HCI_RAW, &hdev->flags); |
2076 | ||
d603b76b MH |
2077 | /* Powering on the controller with HCI_CONFIG set only |
2078 | * happens with the transition from unconfigured to | |
2079 | * configured. This will send the Index Added event. | |
2080 | */ | |
744cf19e | 2081 | mgmt_index_added(hdev); |
fee746b0 | 2082 | } |
ab81cbf9 JH |
2083 | } |
2084 | ||
2085 | static void hci_power_off(struct work_struct *work) | |
2086 | { | |
3243553f | 2087 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2088 | power_off.work); |
ab81cbf9 JH |
2089 | |
2090 | BT_DBG("%s", hdev->name); | |
2091 | ||
8ee56540 | 2092 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2093 | } |
2094 | ||
c7741d16 MH |
2095 | static void hci_error_reset(struct work_struct *work) |
2096 | { | |
2097 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2098 | ||
2099 | BT_DBG("%s", hdev->name); | |
2100 | ||
2101 | if (hdev->hw_error) | |
2102 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2103 | else | |
2104 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2105 | hdev->hw_error_code); | |
2106 | ||
2107 | if (hci_dev_do_close(hdev)) | |
2108 | return; | |
2109 | ||
c7741d16 MH |
2110 | hci_dev_do_open(hdev); |
2111 | } | |
2112 | ||
35f7498a | 2113 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2114 | { |
4821002c | 2115 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2116 | |
4821002c JH |
2117 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2118 | list_del(&uuid->list); | |
2aeb9a1a JH |
2119 | kfree(uuid); |
2120 | } | |
2aeb9a1a JH |
2121 | } |
2122 | ||
35f7498a | 2123 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2124 | { |
0378b597 | 2125 | struct link_key *key; |
55ed8ca1 | 2126 | |
0378b597 JH |
2127 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2128 | list_del_rcu(&key->list); | |
2129 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2130 | } |
55ed8ca1 JH |
2131 | } |
2132 | ||
35f7498a | 2133 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2134 | { |
970d0f1b | 2135 | struct smp_ltk *k; |
b899efaf | 2136 | |
970d0f1b JH |
2137 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2138 | list_del_rcu(&k->list); | |
2139 | kfree_rcu(k, rcu); | |
b899efaf | 2140 | } |
b899efaf VCG |
2141 | } |
2142 | ||
970c4e46 JH |
2143 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2144 | { | |
adae20cb | 2145 | struct smp_irk *k; |
970c4e46 | 2146 | |
adae20cb JH |
2147 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2148 | list_del_rcu(&k->list); | |
2149 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2150 | } |
2151 | } | |
2152 | ||
55ed8ca1 JH |
2153 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2154 | { | |
8035ded4 | 2155 | struct link_key *k; |
55ed8ca1 | 2156 | |
0378b597 JH |
2157 | rcu_read_lock(); |
2158 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2159 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2160 | rcu_read_unlock(); | |
55ed8ca1 | 2161 | return k; |
0378b597 JH |
2162 | } |
2163 | } | |
2164 | rcu_read_unlock(); | |
55ed8ca1 JH |
2165 | |
2166 | return NULL; | |
2167 | } | |
2168 | ||
745c0ce3 | 2169 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2170 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2171 | { |
2172 | /* Legacy key */ | |
2173 | if (key_type < 0x03) | |
745c0ce3 | 2174 | return true; |
d25e28ab JH |
2175 | |
2176 | /* Debug keys are insecure so don't store them persistently */ | |
2177 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2178 | return false; |
d25e28ab JH |
2179 | |
2180 | /* Changed combination key and there's no previous one */ | |
2181 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2182 | return false; |
d25e28ab JH |
2183 | |
2184 | /* Security mode 3 case */ | |
2185 | if (!conn) | |
745c0ce3 | 2186 | return true; |
d25e28ab | 2187 | |
e3befab9 JH |
2188 | /* BR/EDR key derived using SC from an LE link */ |
2189 | if (conn->type == LE_LINK) | |
2190 | return true; | |
2191 | ||
d25e28ab JH |
2192 | /* Neither local nor remote side had no-bonding as requirement */ |
2193 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2194 | return true; |
d25e28ab JH |
2195 | |
2196 | /* Local side had dedicated bonding as requirement */ | |
2197 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2198 | return true; |
d25e28ab JH |
2199 | |
2200 | /* Remote side had dedicated bonding as requirement */ | |
2201 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2202 | return true; |
d25e28ab JH |
2203 | |
2204 | /* If none of the above criteria match, then don't store the key | |
2205 | * persistently */ | |
745c0ce3 | 2206 | return false; |
d25e28ab JH |
2207 | } |
2208 | ||
e804d25d | 2209 | static u8 ltk_role(u8 type) |
98a0b845 | 2210 | { |
e804d25d JH |
2211 | if (type == SMP_LTK) |
2212 | return HCI_ROLE_MASTER; | |
98a0b845 | 2213 | |
e804d25d | 2214 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2215 | } |
2216 | ||
f3a73d97 JH |
2217 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2218 | u8 addr_type, u8 role) | |
75d262c2 | 2219 | { |
c9839a11 | 2220 | struct smp_ltk *k; |
75d262c2 | 2221 | |
970d0f1b JH |
2222 | rcu_read_lock(); |
2223 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2224 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2225 | continue; | |
2226 | ||
923e2414 | 2227 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2228 | rcu_read_unlock(); |
75d262c2 | 2229 | return k; |
970d0f1b JH |
2230 | } |
2231 | } | |
2232 | rcu_read_unlock(); | |
75d262c2 VCG |
2233 | |
2234 | return NULL; | |
2235 | } | |
75d262c2 | 2236 | |
970c4e46 JH |
2237 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2238 | { | |
2239 | struct smp_irk *irk; | |
2240 | ||
adae20cb JH |
2241 | rcu_read_lock(); |
2242 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2243 | if (!bacmp(&irk->rpa, rpa)) { | |
2244 | rcu_read_unlock(); | |
970c4e46 | 2245 | return irk; |
adae20cb | 2246 | } |
970c4e46 JH |
2247 | } |
2248 | ||
adae20cb | 2249 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2250 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2251 | bacpy(&irk->rpa, rpa); |
adae20cb | 2252 | rcu_read_unlock(); |
970c4e46 JH |
2253 | return irk; |
2254 | } | |
2255 | } | |
adae20cb | 2256 | rcu_read_unlock(); |
970c4e46 JH |
2257 | |
2258 | return NULL; | |
2259 | } | |
2260 | ||
2261 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2262 | u8 addr_type) | |
2263 | { | |
2264 | struct smp_irk *irk; | |
2265 | ||
6cfc9988 JH |
2266 | /* Identity Address must be public or static random */ |
2267 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2268 | return NULL; | |
2269 | ||
adae20cb JH |
2270 | rcu_read_lock(); |
2271 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2272 | if (addr_type == irk->addr_type && |
adae20cb JH |
2273 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2274 | rcu_read_unlock(); | |
970c4e46 | 2275 | return irk; |
adae20cb | 2276 | } |
970c4e46 | 2277 | } |
adae20cb | 2278 | rcu_read_unlock(); |
970c4e46 JH |
2279 | |
2280 | return NULL; | |
2281 | } | |
2282 | ||
567fa2aa | 2283 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2284 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2285 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2286 | { |
2287 | struct link_key *key, *old_key; | |
745c0ce3 | 2288 | u8 old_key_type; |
55ed8ca1 JH |
2289 | |
2290 | old_key = hci_find_link_key(hdev, bdaddr); | |
2291 | if (old_key) { | |
2292 | old_key_type = old_key->type; | |
2293 | key = old_key; | |
2294 | } else { | |
12adcf3a | 2295 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2296 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2297 | if (!key) |
567fa2aa | 2298 | return NULL; |
0378b597 | 2299 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2300 | } |
2301 | ||
6ed93dc6 | 2302 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2303 | |
d25e28ab JH |
2304 | /* Some buggy controller combinations generate a changed |
2305 | * combination key for legacy pairing even when there's no | |
2306 | * previous key */ | |
2307 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2308 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2309 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2310 | if (conn) |
2311 | conn->key_type = type; | |
2312 | } | |
d25e28ab | 2313 | |
55ed8ca1 | 2314 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2315 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2316 | key->pin_len = pin_len; |
2317 | ||
b6020ba0 | 2318 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2319 | key->type = old_key_type; |
4748fed2 JH |
2320 | else |
2321 | key->type = type; | |
2322 | ||
7652ff6a JH |
2323 | if (persistent) |
2324 | *persistent = hci_persistent_key(hdev, conn, type, | |
2325 | old_key_type); | |
4df378a1 | 2326 | |
567fa2aa | 2327 | return key; |
55ed8ca1 JH |
2328 | } |
2329 | ||
ca9142b8 | 2330 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2331 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2332 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2333 | { |
c9839a11 | 2334 | struct smp_ltk *key, *old_key; |
e804d25d | 2335 | u8 role = ltk_role(type); |
75d262c2 | 2336 | |
f3a73d97 | 2337 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2338 | if (old_key) |
75d262c2 | 2339 | key = old_key; |
c9839a11 | 2340 | else { |
0a14ab41 | 2341 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2342 | if (!key) |
ca9142b8 | 2343 | return NULL; |
970d0f1b | 2344 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2345 | } |
2346 | ||
75d262c2 | 2347 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2348 | key->bdaddr_type = addr_type; |
2349 | memcpy(key->val, tk, sizeof(key->val)); | |
2350 | key->authenticated = authenticated; | |
2351 | key->ediv = ediv; | |
fe39c7b2 | 2352 | key->rand = rand; |
c9839a11 VCG |
2353 | key->enc_size = enc_size; |
2354 | key->type = type; | |
75d262c2 | 2355 | |
ca9142b8 | 2356 | return key; |
75d262c2 VCG |
2357 | } |
2358 | ||
ca9142b8 JH |
2359 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2360 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2361 | { |
2362 | struct smp_irk *irk; | |
2363 | ||
2364 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2365 | if (!irk) { | |
2366 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2367 | if (!irk) | |
ca9142b8 | 2368 | return NULL; |
970c4e46 JH |
2369 | |
2370 | bacpy(&irk->bdaddr, bdaddr); | |
2371 | irk->addr_type = addr_type; | |
2372 | ||
adae20cb | 2373 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2374 | } |
2375 | ||
2376 | memcpy(irk->val, val, 16); | |
2377 | bacpy(&irk->rpa, rpa); | |
2378 | ||
ca9142b8 | 2379 | return irk; |
970c4e46 JH |
2380 | } |
2381 | ||
55ed8ca1 JH |
2382 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2383 | { | |
2384 | struct link_key *key; | |
2385 | ||
2386 | key = hci_find_link_key(hdev, bdaddr); | |
2387 | if (!key) | |
2388 | return -ENOENT; | |
2389 | ||
6ed93dc6 | 2390 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2391 | |
0378b597 JH |
2392 | list_del_rcu(&key->list); |
2393 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2394 | |
2395 | return 0; | |
2396 | } | |
2397 | ||
e0b2b27e | 2398 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2399 | { |
970d0f1b | 2400 | struct smp_ltk *k; |
c51ffa0b | 2401 | int removed = 0; |
b899efaf | 2402 | |
970d0f1b | 2403 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2404 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2405 | continue; |
2406 | ||
6ed93dc6 | 2407 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2408 | |
970d0f1b JH |
2409 | list_del_rcu(&k->list); |
2410 | kfree_rcu(k, rcu); | |
c51ffa0b | 2411 | removed++; |
b899efaf VCG |
2412 | } |
2413 | ||
c51ffa0b | 2414 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2415 | } |
2416 | ||
a7ec7338 JH |
2417 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2418 | { | |
adae20cb | 2419 | struct smp_irk *k; |
a7ec7338 | 2420 | |
adae20cb | 2421 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2422 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2423 | continue; | |
2424 | ||
2425 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2426 | ||
adae20cb JH |
2427 | list_del_rcu(&k->list); |
2428 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2429 | } |
2430 | } | |
2431 | ||
55e76b38 JH |
2432 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2433 | { | |
2434 | struct smp_ltk *k; | |
4ba9faf3 | 2435 | struct smp_irk *irk; |
55e76b38 JH |
2436 | u8 addr_type; |
2437 | ||
2438 | if (type == BDADDR_BREDR) { | |
2439 | if (hci_find_link_key(hdev, bdaddr)) | |
2440 | return true; | |
2441 | return false; | |
2442 | } | |
2443 | ||
2444 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2445 | if (type == BDADDR_LE_PUBLIC) | |
2446 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2447 | else | |
2448 | addr_type = ADDR_LE_DEV_RANDOM; | |
2449 | ||
4ba9faf3 JH |
2450 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2451 | if (irk) { | |
2452 | bdaddr = &irk->bdaddr; | |
2453 | addr_type = irk->addr_type; | |
2454 | } | |
2455 | ||
55e76b38 JH |
2456 | rcu_read_lock(); |
2457 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2458 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2459 | rcu_read_unlock(); | |
55e76b38 | 2460 | return true; |
87c8b28d | 2461 | } |
55e76b38 JH |
2462 | } |
2463 | rcu_read_unlock(); | |
2464 | ||
2465 | return false; | |
2466 | } | |
2467 | ||
6bd32326 | 2468 | /* HCI command timer function */ |
65cc2b49 | 2469 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2470 | { |
65cc2b49 MH |
2471 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2472 | cmd_timer.work); | |
6bd32326 | 2473 | |
bda4f23a AE |
2474 | if (hdev->sent_cmd) { |
2475 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2476 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2477 | ||
2478 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2479 | } else { | |
2480 | BT_ERR("%s command tx timeout", hdev->name); | |
2481 | } | |
2482 | ||
6bd32326 | 2483 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2484 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2485 | } |
2486 | ||
2763eda6 | 2487 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2488 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2489 | { |
2490 | struct oob_data *data; | |
2491 | ||
6928a924 JH |
2492 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2493 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2494 | continue; | |
2495 | if (data->bdaddr_type != bdaddr_type) | |
2496 | continue; | |
2497 | return data; | |
2498 | } | |
2763eda6 SJ |
2499 | |
2500 | return NULL; | |
2501 | } | |
2502 | ||
6928a924 JH |
2503 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2504 | u8 bdaddr_type) | |
2763eda6 SJ |
2505 | { |
2506 | struct oob_data *data; | |
2507 | ||
6928a924 | 2508 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2509 | if (!data) |
2510 | return -ENOENT; | |
2511 | ||
6928a924 | 2512 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2513 | |
2514 | list_del(&data->list); | |
2515 | kfree(data); | |
2516 | ||
2517 | return 0; | |
2518 | } | |
2519 | ||
35f7498a | 2520 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2521 | { |
2522 | struct oob_data *data, *n; | |
2523 | ||
2524 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2525 | list_del(&data->list); | |
2526 | kfree(data); | |
2527 | } | |
2763eda6 SJ |
2528 | } |
2529 | ||
0798872e | 2530 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2531 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2532 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2533 | { |
2534 | struct oob_data *data; | |
2535 | ||
6928a924 | 2536 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2537 | if (!data) { |
0a14ab41 | 2538 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2539 | if (!data) |
2540 | return -ENOMEM; | |
2541 | ||
2542 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2543 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2544 | list_add(&data->list, &hdev->remote_oob_data); |
2545 | } | |
2546 | ||
81328d5c JH |
2547 | if (hash192 && rand192) { |
2548 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2549 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2550 | if (hash256 && rand256) |
2551 | data->present = 0x03; | |
81328d5c JH |
2552 | } else { |
2553 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2554 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2555 | if (hash256 && rand256) |
2556 | data->present = 0x02; | |
2557 | else | |
2558 | data->present = 0x00; | |
0798872e MH |
2559 | } |
2560 | ||
81328d5c JH |
2561 | if (hash256 && rand256) { |
2562 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2563 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2564 | } else { | |
2565 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2566 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2567 | if (hash192 && rand192) |
2568 | data->present = 0x01; | |
81328d5c | 2569 | } |
0798872e | 2570 | |
6ed93dc6 | 2571 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2572 | |
2573 | return 0; | |
2574 | } | |
2575 | ||
d2609b34 FG |
2576 | /* This function requires the caller holds hdev->lock */ |
2577 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2578 | { | |
2579 | struct adv_info *adv_instance; | |
2580 | ||
2581 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2582 | if (adv_instance->instance == instance) | |
2583 | return adv_instance; | |
2584 | } | |
2585 | ||
2586 | return NULL; | |
2587 | } | |
2588 | ||
2589 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
2590 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
2591 | { | |
d2609b34 FG |
2592 | struct adv_info *cur_instance; |
2593 | ||
2594 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2595 | if (!cur_instance) | |
2596 | return NULL; | |
2597 | ||
2598 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2599 | struct adv_info, list)) | |
2600 | return list_first_entry(&hdev->adv_instances, | |
2601 | struct adv_info, list); | |
2602 | else | |
2603 | return list_next_entry(cur_instance, list); | |
2604 | } | |
2605 | ||
2606 | /* This function requires the caller holds hdev->lock */ | |
2607 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2608 | { | |
2609 | struct adv_info *adv_instance; | |
2610 | ||
2611 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2612 | if (!adv_instance) | |
2613 | return -ENOENT; | |
2614 | ||
2615 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2616 | ||
cab054ab JH |
2617 | if (hdev->cur_adv_instance == instance) { |
2618 | if (hdev->adv_instance_timeout) { | |
2619 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2620 | hdev->adv_instance_timeout = 0; | |
2621 | } | |
2622 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
2623 | } |
2624 | ||
d2609b34 FG |
2625 | list_del(&adv_instance->list); |
2626 | kfree(adv_instance); | |
2627 | ||
2628 | hdev->adv_instance_cnt--; | |
2629 | ||
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | /* This function requires the caller holds hdev->lock */ | |
2634 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2635 | { | |
2636 | struct adv_info *adv_instance, *n; | |
2637 | ||
5d900e46 FG |
2638 | if (hdev->adv_instance_timeout) { |
2639 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2640 | hdev->adv_instance_timeout = 0; | |
2641 | } | |
2642 | ||
d2609b34 FG |
2643 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2644 | list_del(&adv_instance->list); | |
2645 | kfree(adv_instance); | |
2646 | } | |
2647 | ||
2648 | hdev->adv_instance_cnt = 0; | |
cab054ab | 2649 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
2650 | } |
2651 | ||
2652 | /* This function requires the caller holds hdev->lock */ | |
2653 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2654 | u16 adv_data_len, u8 *adv_data, | |
2655 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2656 | u16 timeout, u16 duration) | |
2657 | { | |
2658 | struct adv_info *adv_instance; | |
2659 | ||
2660 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2661 | if (adv_instance) { | |
2662 | memset(adv_instance->adv_data, 0, | |
2663 | sizeof(adv_instance->adv_data)); | |
2664 | memset(adv_instance->scan_rsp_data, 0, | |
2665 | sizeof(adv_instance->scan_rsp_data)); | |
2666 | } else { | |
2667 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2668 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2669 | return -EOVERFLOW; | |
2670 | ||
39ecfad6 | 2671 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2672 | if (!adv_instance) |
2673 | return -ENOMEM; | |
2674 | ||
fffd38bc | 2675 | adv_instance->pending = true; |
d2609b34 FG |
2676 | adv_instance->instance = instance; |
2677 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2678 | hdev->adv_instance_cnt++; | |
2679 | } | |
2680 | ||
2681 | adv_instance->flags = flags; | |
2682 | adv_instance->adv_data_len = adv_data_len; | |
2683 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2684 | ||
2685 | if (adv_data_len) | |
2686 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2687 | ||
2688 | if (scan_rsp_len) | |
2689 | memcpy(adv_instance->scan_rsp_data, | |
2690 | scan_rsp_data, scan_rsp_len); | |
2691 | ||
2692 | adv_instance->timeout = timeout; | |
5d900e46 | 2693 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2694 | |
2695 | if (duration == 0) | |
2696 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2697 | else | |
2698 | adv_instance->duration = duration; | |
2699 | ||
2700 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2701 | ||
2702 | return 0; | |
2703 | } | |
2704 | ||
dcc36c16 | 2705 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2706 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2707 | { |
8035ded4 | 2708 | struct bdaddr_list *b; |
b2a66aad | 2709 | |
dcc36c16 | 2710 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2711 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2712 | return b; |
b9ee0a78 | 2713 | } |
b2a66aad AJ |
2714 | |
2715 | return NULL; | |
2716 | } | |
2717 | ||
dcc36c16 | 2718 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2719 | { |
7eb7404f | 2720 | struct bdaddr_list *b, *n; |
b2a66aad | 2721 | |
7eb7404f GT |
2722 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2723 | list_del(&b->list); | |
b2a66aad AJ |
2724 | kfree(b); |
2725 | } | |
b2a66aad AJ |
2726 | } |
2727 | ||
dcc36c16 | 2728 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2729 | { |
2730 | struct bdaddr_list *entry; | |
b2a66aad | 2731 | |
b9ee0a78 | 2732 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2733 | return -EBADF; |
2734 | ||
dcc36c16 | 2735 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2736 | return -EEXIST; |
b2a66aad | 2737 | |
27f70f3e | 2738 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2739 | if (!entry) |
2740 | return -ENOMEM; | |
b2a66aad AJ |
2741 | |
2742 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2743 | entry->bdaddr_type = type; |
b2a66aad | 2744 | |
dcc36c16 | 2745 | list_add(&entry->list, list); |
b2a66aad | 2746 | |
2a8357f2 | 2747 | return 0; |
b2a66aad AJ |
2748 | } |
2749 | ||
dcc36c16 | 2750 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2751 | { |
2752 | struct bdaddr_list *entry; | |
b2a66aad | 2753 | |
35f7498a | 2754 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2755 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2756 | return 0; |
2757 | } | |
b2a66aad | 2758 | |
dcc36c16 | 2759 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2760 | if (!entry) |
2761 | return -ENOENT; | |
2762 | ||
2763 | list_del(&entry->list); | |
2764 | kfree(entry); | |
2765 | ||
2766 | return 0; | |
2767 | } | |
2768 | ||
15819a70 AG |
2769 | /* This function requires the caller holds hdev->lock */ |
2770 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2771 | bdaddr_t *addr, u8 addr_type) | |
2772 | { | |
2773 | struct hci_conn_params *params; | |
2774 | ||
2775 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2776 | if (bacmp(¶ms->addr, addr) == 0 && | |
2777 | params->addr_type == addr_type) { | |
2778 | return params; | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | return NULL; | |
2783 | } | |
2784 | ||
4b10966f | 2785 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2786 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2787 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2788 | { |
912b42ef | 2789 | struct hci_conn_params *param; |
a9b0a04c | 2790 | |
501f8827 | 2791 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2792 | if (bacmp(¶m->addr, addr) == 0 && |
2793 | param->addr_type == addr_type) | |
2794 | return param; | |
4b10966f MH |
2795 | } |
2796 | ||
2797 | return NULL; | |
a9b0a04c AG |
2798 | } |
2799 | ||
15819a70 | 2800 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2801 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2802 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2803 | { |
2804 | struct hci_conn_params *params; | |
2805 | ||
2806 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2807 | if (params) |
51d167c0 | 2808 | return params; |
15819a70 AG |
2809 | |
2810 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2811 | if (!params) { | |
2812 | BT_ERR("Out of memory"); | |
51d167c0 | 2813 | return NULL; |
15819a70 AG |
2814 | } |
2815 | ||
2816 | bacpy(¶ms->addr, addr); | |
2817 | params->addr_type = addr_type; | |
cef952ce AG |
2818 | |
2819 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2820 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2821 | |
bf5b3c8b MH |
2822 | params->conn_min_interval = hdev->le_conn_min_interval; |
2823 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2824 | params->conn_latency = hdev->le_conn_latency; | |
2825 | params->supervision_timeout = hdev->le_supv_timeout; | |
2826 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2827 | ||
2828 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2829 | ||
51d167c0 | 2830 | return params; |
bf5b3c8b MH |
2831 | } |
2832 | ||
f6c63249 | 2833 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2834 | { |
f8aaf9b6 | 2835 | if (params->conn) { |
f161dd41 | 2836 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2837 | hci_conn_put(params->conn); |
2838 | } | |
f161dd41 | 2839 | |
95305baa | 2840 | list_del(¶ms->action); |
15819a70 AG |
2841 | list_del(¶ms->list); |
2842 | kfree(params); | |
f6c63249 JH |
2843 | } |
2844 | ||
2845 | /* This function requires the caller holds hdev->lock */ | |
2846 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2847 | { | |
2848 | struct hci_conn_params *params; | |
2849 | ||
2850 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2851 | if (!params) | |
2852 | return; | |
2853 | ||
2854 | hci_conn_params_free(params); | |
15819a70 | 2855 | |
95305baa JH |
2856 | hci_update_background_scan(hdev); |
2857 | ||
15819a70 AG |
2858 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2859 | } | |
2860 | ||
2861 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2862 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2863 | { |
2864 | struct hci_conn_params *params, *tmp; | |
2865 | ||
2866 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2867 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2868 | continue; | |
f75113a2 JP |
2869 | |
2870 | /* If trying to estabilish one time connection to disabled | |
2871 | * device, leave the params, but mark them as just once. | |
2872 | */ | |
2873 | if (params->explicit_connect) { | |
2874 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2875 | continue; | |
2876 | } | |
2877 | ||
15819a70 AG |
2878 | list_del(¶ms->list); |
2879 | kfree(params); | |
2880 | } | |
2881 | ||
55af49a8 | 2882 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2883 | } |
2884 | ||
2885 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2886 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2887 | { |
15819a70 | 2888 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2889 | |
f6c63249 JH |
2890 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2891 | hci_conn_params_free(params); | |
77a77a30 | 2892 | |
15819a70 | 2893 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2894 | } |
2895 | ||
a1f4c318 JH |
2896 | /* Copy the Identity Address of the controller. |
2897 | * | |
2898 | * If the controller has a public BD_ADDR, then by default use that one. | |
2899 | * If this is a LE only controller without a public address, default to | |
2900 | * the static random address. | |
2901 | * | |
2902 | * For debugging purposes it is possible to force controllers with a | |
2903 | * public address to use the static random address instead. | |
50b5b952 MH |
2904 | * |
2905 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2906 | * userspace has configured a static address, then that address | |
2907 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2908 | */ |
2909 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2910 | u8 *bdaddr_type) | |
2911 | { | |
b7cb93e5 | 2912 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2913 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2914 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2915 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2916 | bacpy(bdaddr, &hdev->static_addr); |
2917 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2918 | } else { | |
2919 | bacpy(bdaddr, &hdev->bdaddr); | |
2920 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2921 | } | |
2922 | } | |
2923 | ||
9be0dab7 DH |
2924 | /* Alloc HCI device */ |
2925 | struct hci_dev *hci_alloc_dev(void) | |
2926 | { | |
2927 | struct hci_dev *hdev; | |
2928 | ||
27f70f3e | 2929 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
2930 | if (!hdev) |
2931 | return NULL; | |
2932 | ||
b1b813d4 DH |
2933 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2934 | hdev->esco_type = (ESCO_HV1); | |
2935 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2936 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2937 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2938 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2939 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2940 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2941 | hdev->adv_instance_cnt = 0; |
2942 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2943 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2944 | |
b1b813d4 DH |
2945 | hdev->sniff_max_interval = 800; |
2946 | hdev->sniff_min_interval = 80; | |
2947 | ||
3f959d46 | 2948 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2949 | hdev->le_adv_min_interval = 0x0800; |
2950 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2951 | hdev->le_scan_interval = 0x0060; |
2952 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
2953 | hdev->le_conn_min_interval = 0x0028; |
2954 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
2955 | hdev->le_conn_latency = 0x0000; |
2956 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2957 | hdev->le_def_tx_len = 0x001b; |
2958 | hdev->le_def_tx_time = 0x0148; | |
2959 | hdev->le_max_tx_len = 0x001b; | |
2960 | hdev->le_max_tx_time = 0x0148; | |
2961 | hdev->le_max_rx_len = 0x001b; | |
2962 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 2963 | |
d6bfd59c | 2964 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2965 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2966 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2967 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 2968 | |
b1b813d4 DH |
2969 | mutex_init(&hdev->lock); |
2970 | mutex_init(&hdev->req_lock); | |
2971 | ||
2972 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2973 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 2974 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
2975 | INIT_LIST_HEAD(&hdev->uuids); |
2976 | INIT_LIST_HEAD(&hdev->link_keys); | |
2977 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2978 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2979 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 2980 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 2981 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2982 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2983 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2984 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 2985 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
2986 | |
2987 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2988 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2989 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2990 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2991 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2992 | |
b1b813d4 | 2993 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 2994 | |
b1b813d4 DH |
2995 | skb_queue_head_init(&hdev->rx_q); |
2996 | skb_queue_head_init(&hdev->cmd_q); | |
2997 | skb_queue_head_init(&hdev->raw_q); | |
2998 | ||
2999 | init_waitqueue_head(&hdev->req_wait_q); | |
3000 | ||
65cc2b49 | 3001 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3002 | |
5fc16cc4 JH |
3003 | hci_request_setup(hdev); |
3004 | ||
b1b813d4 DH |
3005 | hci_init_sysfs(hdev); |
3006 | discovery_init(hdev); | |
9be0dab7 DH |
3007 | |
3008 | return hdev; | |
3009 | } | |
3010 | EXPORT_SYMBOL(hci_alloc_dev); | |
3011 | ||
3012 | /* Free HCI device */ | |
3013 | void hci_free_dev(struct hci_dev *hdev) | |
3014 | { | |
9be0dab7 DH |
3015 | /* will free via device release */ |
3016 | put_device(&hdev->dev); | |
3017 | } | |
3018 | EXPORT_SYMBOL(hci_free_dev); | |
3019 | ||
1da177e4 LT |
3020 | /* Register HCI device */ |
3021 | int hci_register_dev(struct hci_dev *hdev) | |
3022 | { | |
b1b813d4 | 3023 | int id, error; |
1da177e4 | 3024 | |
74292d5a | 3025 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3026 | return -EINVAL; |
3027 | ||
08add513 MM |
3028 | /* Do not allow HCI_AMP devices to register at index 0, |
3029 | * so the index can be used as the AMP controller ID. | |
3030 | */ | |
3df92b31 | 3031 | switch (hdev->dev_type) { |
ca8bee5d | 3032 | case HCI_PRIMARY: |
3df92b31 SL |
3033 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
3034 | break; | |
3035 | case HCI_AMP: | |
3036 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3037 | break; | |
3038 | default: | |
3039 | return -EINVAL; | |
1da177e4 | 3040 | } |
8e87d142 | 3041 | |
3df92b31 SL |
3042 | if (id < 0) |
3043 | return id; | |
3044 | ||
1da177e4 LT |
3045 | sprintf(hdev->name, "hci%d", id); |
3046 | hdev->id = id; | |
2d8b3a11 AE |
3047 | |
3048 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3049 | ||
d8537548 KC |
3050 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3051 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3052 | if (!hdev->workqueue) { |
3053 | error = -ENOMEM; | |
3054 | goto err; | |
3055 | } | |
f48fd9c8 | 3056 | |
d8537548 KC |
3057 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3058 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3059 | if (!hdev->req_workqueue) { |
3060 | destroy_workqueue(hdev->workqueue); | |
3061 | error = -ENOMEM; | |
3062 | goto err; | |
3063 | } | |
3064 | ||
0153e2ec MH |
3065 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3066 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3067 | ||
bdc3e0f1 MH |
3068 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3069 | ||
3070 | error = device_add(&hdev->dev); | |
33ca954d | 3071 | if (error < 0) |
54506918 | 3072 | goto err_wqueue; |
1da177e4 | 3073 | |
6d5d2ee6 HK |
3074 | hci_leds_init(hdev); |
3075 | ||
611b30f7 | 3076 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3077 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3078 | hdev); | |
611b30f7 MH |
3079 | if (hdev->rfkill) { |
3080 | if (rfkill_register(hdev->rfkill) < 0) { | |
3081 | rfkill_destroy(hdev->rfkill); | |
3082 | hdev->rfkill = NULL; | |
3083 | } | |
3084 | } | |
3085 | ||
5e130367 | 3086 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3087 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3088 | |
a1536da2 MH |
3089 | hci_dev_set_flag(hdev, HCI_SETUP); |
3090 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3091 | |
ca8bee5d | 3092 | if (hdev->dev_type == HCI_PRIMARY) { |
56f87901 JH |
3093 | /* Assume BR/EDR support until proven otherwise (such as |
3094 | * through reading supported features during init. | |
3095 | */ | |
a1536da2 | 3096 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3097 | } |
ce2be9ac | 3098 | |
fcee3377 GP |
3099 | write_lock(&hci_dev_list_lock); |
3100 | list_add(&hdev->list, &hci_dev_list); | |
3101 | write_unlock(&hci_dev_list_lock); | |
3102 | ||
4a964404 MH |
3103 | /* Devices that are marked for raw-only usage are unconfigured |
3104 | * and should not be included in normal operation. | |
fee746b0 MH |
3105 | */ |
3106 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3107 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3108 | |
05fcd4c4 | 3109 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3110 | hci_dev_hold(hdev); |
1da177e4 | 3111 | |
19202573 | 3112 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3113 | |
1da177e4 | 3114 | return id; |
f48fd9c8 | 3115 | |
33ca954d DH |
3116 | err_wqueue: |
3117 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3118 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3119 | err: |
3df92b31 | 3120 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3121 | |
33ca954d | 3122 | return error; |
1da177e4 LT |
3123 | } |
3124 | EXPORT_SYMBOL(hci_register_dev); | |
3125 | ||
3126 | /* Unregister HCI device */ | |
59735631 | 3127 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3128 | { |
2d7cc19e | 3129 | int id; |
ef222013 | 3130 | |
c13854ce | 3131 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3132 | |
a1536da2 | 3133 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3134 | |
3df92b31 SL |
3135 | id = hdev->id; |
3136 | ||
f20d09d5 | 3137 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3138 | list_del(&hdev->list); |
f20d09d5 | 3139 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 3140 | |
b9b5ef18 GP |
3141 | cancel_work_sync(&hdev->power_on); |
3142 | ||
bf389cab JS |
3143 | hci_dev_do_close(hdev); |
3144 | ||
ab81cbf9 | 3145 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3146 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3147 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3148 | hci_dev_lock(hdev); |
744cf19e | 3149 | mgmt_index_removed(hdev); |
09fd0de5 | 3150 | hci_dev_unlock(hdev); |
56e5cb86 | 3151 | } |
ab81cbf9 | 3152 | |
2e58ef3e JH |
3153 | /* mgmt_index_removed should take care of emptying the |
3154 | * pending list */ | |
3155 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3156 | ||
05fcd4c4 | 3157 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3158 | |
611b30f7 MH |
3159 | if (hdev->rfkill) { |
3160 | rfkill_unregister(hdev->rfkill); | |
3161 | rfkill_destroy(hdev->rfkill); | |
3162 | } | |
3163 | ||
bdc3e0f1 | 3164 | device_del(&hdev->dev); |
147e2d59 | 3165 | |
0153e2ec | 3166 | debugfs_remove_recursive(hdev->debugfs); |
5177a838 MH |
3167 | kfree_const(hdev->hw_info); |
3168 | kfree_const(hdev->fw_info); | |
0153e2ec | 3169 | |
f48fd9c8 | 3170 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3171 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3172 | |
09fd0de5 | 3173 | hci_dev_lock(hdev); |
dcc36c16 | 3174 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3175 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3176 | hci_uuids_clear(hdev); |
55ed8ca1 | 3177 | hci_link_keys_clear(hdev); |
b899efaf | 3178 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3179 | hci_smp_irks_clear(hdev); |
2763eda6 | 3180 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3181 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3182 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3183 | hci_conn_params_clear_all(hdev); |
22078800 | 3184 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3185 | hci_dev_unlock(hdev); |
e2e0cacb | 3186 | |
dc946bd8 | 3187 | hci_dev_put(hdev); |
3df92b31 SL |
3188 | |
3189 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3190 | } |
3191 | EXPORT_SYMBOL(hci_unregister_dev); | |
3192 | ||
3193 | /* Suspend HCI device */ | |
3194 | int hci_suspend_dev(struct hci_dev *hdev) | |
3195 | { | |
05fcd4c4 | 3196 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3197 | return 0; |
3198 | } | |
3199 | EXPORT_SYMBOL(hci_suspend_dev); | |
3200 | ||
3201 | /* Resume HCI device */ | |
3202 | int hci_resume_dev(struct hci_dev *hdev) | |
3203 | { | |
05fcd4c4 | 3204 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3205 | return 0; |
3206 | } | |
3207 | EXPORT_SYMBOL(hci_resume_dev); | |
3208 | ||
75e0569f MH |
3209 | /* Reset HCI device */ |
3210 | int hci_reset_dev(struct hci_dev *hdev) | |
3211 | { | |
3212 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3213 | struct sk_buff *skb; | |
3214 | ||
3215 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3216 | if (!skb) | |
3217 | return -ENOMEM; | |
3218 | ||
d79f34e3 | 3219 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
75e0569f MH |
3220 | memcpy(skb_put(skb, 3), hw_err, 3); |
3221 | ||
3222 | /* Send Hardware Error to upper stack */ | |
3223 | return hci_recv_frame(hdev, skb); | |
3224 | } | |
3225 | EXPORT_SYMBOL(hci_reset_dev); | |
3226 | ||
76bca880 | 3227 | /* Receive frame from HCI drivers */ |
e1a26170 | 3228 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3229 | { |
76bca880 | 3230 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3231 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3232 | kfree_skb(skb); |
3233 | return -ENXIO; | |
3234 | } | |
3235 | ||
d79f34e3 MH |
3236 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
3237 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
3238 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
fe806dce MH |
3239 | kfree_skb(skb); |
3240 | return -EINVAL; | |
3241 | } | |
3242 | ||
d82603c6 | 3243 | /* Incoming skb */ |
76bca880 MH |
3244 | bt_cb(skb)->incoming = 1; |
3245 | ||
3246 | /* Time stamp */ | |
3247 | __net_timestamp(skb); | |
3248 | ||
76bca880 | 3249 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3250 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3251 | |
76bca880 MH |
3252 | return 0; |
3253 | } | |
3254 | EXPORT_SYMBOL(hci_recv_frame); | |
3255 | ||
e875ff84 MH |
3256 | /* Receive diagnostic message from HCI drivers */ |
3257 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3258 | { | |
581d6fd6 | 3259 | /* Mark as diagnostic packet */ |
d79f34e3 | 3260 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3261 | |
e875ff84 MH |
3262 | /* Time stamp */ |
3263 | __net_timestamp(skb); | |
3264 | ||
581d6fd6 MH |
3265 | skb_queue_tail(&hdev->rx_q, skb); |
3266 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3267 | |
e875ff84 MH |
3268 | return 0; |
3269 | } | |
3270 | EXPORT_SYMBOL(hci_recv_diag); | |
3271 | ||
5177a838 MH |
3272 | void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...) |
3273 | { | |
3274 | va_list vargs; | |
3275 | ||
3276 | va_start(vargs, fmt); | |
3277 | kfree_const(hdev->hw_info); | |
3278 | hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3279 | va_end(vargs); | |
3280 | } | |
3281 | EXPORT_SYMBOL(hci_set_hw_info); | |
3282 | ||
3283 | void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...) | |
3284 | { | |
3285 | va_list vargs; | |
3286 | ||
3287 | va_start(vargs, fmt); | |
3288 | kfree_const(hdev->fw_info); | |
3289 | hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3290 | va_end(vargs); | |
3291 | } | |
3292 | EXPORT_SYMBOL(hci_set_fw_info); | |
3293 | ||
1da177e4 LT |
3294 | /* ---- Interface to upper protocols ---- */ |
3295 | ||
1da177e4 LT |
3296 | int hci_register_cb(struct hci_cb *cb) |
3297 | { | |
3298 | BT_DBG("%p name %s", cb, cb->name); | |
3299 | ||
fba7ecf0 | 3300 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3301 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3302 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3303 | |
3304 | return 0; | |
3305 | } | |
3306 | EXPORT_SYMBOL(hci_register_cb); | |
3307 | ||
3308 | int hci_unregister_cb(struct hci_cb *cb) | |
3309 | { | |
3310 | BT_DBG("%p name %s", cb, cb->name); | |
3311 | ||
fba7ecf0 | 3312 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3313 | list_del(&cb->list); |
fba7ecf0 | 3314 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3315 | |
3316 | return 0; | |
3317 | } | |
3318 | EXPORT_SYMBOL(hci_unregister_cb); | |
3319 | ||
51086991 | 3320 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3321 | { |
cdc52faa MH |
3322 | int err; |
3323 | ||
d79f34e3 MH |
3324 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3325 | skb->len); | |
1da177e4 | 3326 | |
cd82e61c MH |
3327 | /* Time stamp */ |
3328 | __net_timestamp(skb); | |
1da177e4 | 3329 | |
cd82e61c MH |
3330 | /* Send copy to monitor */ |
3331 | hci_send_to_monitor(hdev, skb); | |
3332 | ||
3333 | if (atomic_read(&hdev->promisc)) { | |
3334 | /* Send copy to the sockets */ | |
470fe1b5 | 3335 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3336 | } |
3337 | ||
3338 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3339 | skb_orphan(skb); | |
3340 | ||
73d0d3c8 MH |
3341 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3342 | kfree_skb(skb); | |
3343 | return; | |
3344 | } | |
3345 | ||
cdc52faa MH |
3346 | err = hdev->send(hdev, skb); |
3347 | if (err < 0) { | |
3348 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3349 | kfree_skb(skb); | |
3350 | } | |
1da177e4 LT |
3351 | } |
3352 | ||
1ca3a9d0 | 3353 | /* Send HCI command */ |
07dc93dd JH |
3354 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3355 | const void *param) | |
1ca3a9d0 JH |
3356 | { |
3357 | struct sk_buff *skb; | |
3358 | ||
3359 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3360 | ||
3361 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3362 | if (!skb) { | |
3363 | BT_ERR("%s no memory for command", hdev->name); | |
3364 | return -ENOMEM; | |
3365 | } | |
3366 | ||
49c922bb | 3367 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3368 | * single-command requests. |
3369 | */ | |
44d27137 | 3370 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3371 | |
1da177e4 | 3372 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3373 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3374 | |
3375 | return 0; | |
3376 | } | |
1da177e4 LT |
3377 | |
3378 | /* Get data from the previously sent command */ | |
a9de9248 | 3379 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3380 | { |
3381 | struct hci_command_hdr *hdr; | |
3382 | ||
3383 | if (!hdev->sent_cmd) | |
3384 | return NULL; | |
3385 | ||
3386 | hdr = (void *) hdev->sent_cmd->data; | |
3387 | ||
a9de9248 | 3388 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3389 | return NULL; |
3390 | ||
f0e09510 | 3391 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3392 | |
3393 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3394 | } | |
3395 | ||
fbef168f LP |
3396 | /* Send HCI command and wait for command commplete event */ |
3397 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3398 | const void *param, u32 timeout) | |
3399 | { | |
3400 | struct sk_buff *skb; | |
3401 | ||
3402 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3403 | return ERR_PTR(-ENETDOWN); | |
3404 | ||
3405 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3406 | ||
b504430c | 3407 | hci_req_sync_lock(hdev); |
fbef168f | 3408 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
b504430c | 3409 | hci_req_sync_unlock(hdev); |
fbef168f LP |
3410 | |
3411 | return skb; | |
3412 | } | |
3413 | EXPORT_SYMBOL(hci_cmd_sync); | |
3414 | ||
1da177e4 LT |
3415 | /* Send ACL data */ |
3416 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3417 | { | |
3418 | struct hci_acl_hdr *hdr; | |
3419 | int len = skb->len; | |
3420 | ||
badff6d0 ACM |
3421 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3422 | skb_reset_transport_header(skb); | |
9c70220b | 3423 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3424 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3425 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3426 | } |
3427 | ||
ee22be7e | 3428 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3429 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3430 | { |
ee22be7e | 3431 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3432 | struct hci_dev *hdev = conn->hdev; |
3433 | struct sk_buff *list; | |
3434 | ||
087bfd99 GP |
3435 | skb->len = skb_headlen(skb); |
3436 | skb->data_len = 0; | |
3437 | ||
d79f34e3 | 3438 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3439 | |
3440 | switch (hdev->dev_type) { | |
ca8bee5d | 3441 | case HCI_PRIMARY: |
204a6e54 AE |
3442 | hci_add_acl_hdr(skb, conn->handle, flags); |
3443 | break; | |
3444 | case HCI_AMP: | |
3445 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3446 | break; | |
3447 | default: | |
3448 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3449 | return; | |
3450 | } | |
087bfd99 | 3451 | |
70f23020 AE |
3452 | list = skb_shinfo(skb)->frag_list; |
3453 | if (!list) { | |
1da177e4 LT |
3454 | /* Non fragmented */ |
3455 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3456 | ||
73d80deb | 3457 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3458 | } else { |
3459 | /* Fragmented */ | |
3460 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3461 | ||
3462 | skb_shinfo(skb)->frag_list = NULL; | |
3463 | ||
9cfd5a23 JR |
3464 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3465 | * here because of 6LoWPAN links, as there this function is | |
3466 | * called from softirq and using normal spin lock could cause | |
3467 | * deadlocks. | |
3468 | */ | |
3469 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3470 | |
73d80deb | 3471 | __skb_queue_tail(queue, skb); |
e702112f AE |
3472 | |
3473 | flags &= ~ACL_START; | |
3474 | flags |= ACL_CONT; | |
1da177e4 LT |
3475 | do { |
3476 | skb = list; list = list->next; | |
8e87d142 | 3477 | |
d79f34e3 | 3478 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3479 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3480 | |
3481 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3482 | ||
73d80deb | 3483 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3484 | } while (list); |
3485 | ||
9cfd5a23 | 3486 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3487 | } |
73d80deb LAD |
3488 | } |
3489 | ||
3490 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3491 | { | |
ee22be7e | 3492 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3493 | |
f0e09510 | 3494 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3495 | |
ee22be7e | 3496 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3497 | |
3eff45ea | 3498 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3499 | } |
1da177e4 LT |
3500 | |
3501 | /* Send SCO data */ | |
0d861d8b | 3502 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3503 | { |
3504 | struct hci_dev *hdev = conn->hdev; | |
3505 | struct hci_sco_hdr hdr; | |
3506 | ||
3507 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3508 | ||
aca3192c | 3509 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3510 | hdr.dlen = skb->len; |
3511 | ||
badff6d0 ACM |
3512 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3513 | skb_reset_transport_header(skb); | |
9c70220b | 3514 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3515 | |
d79f34e3 | 3516 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3517 | |
1da177e4 | 3518 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3519 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3520 | } |
1da177e4 LT |
3521 | |
3522 | /* ---- HCI TX task (outgoing data) ---- */ | |
3523 | ||
3524 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3525 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3526 | int *quote) | |
1da177e4 LT |
3527 | { |
3528 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3529 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3530 | unsigned int num = 0, min = ~0; |
1da177e4 | 3531 | |
8e87d142 | 3532 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3533 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3534 | |
3535 | rcu_read_lock(); | |
3536 | ||
3537 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3538 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3539 | continue; |
769be974 MH |
3540 | |
3541 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3542 | continue; | |
3543 | ||
1da177e4 LT |
3544 | num++; |
3545 | ||
3546 | if (c->sent < min) { | |
3547 | min = c->sent; | |
3548 | conn = c; | |
3549 | } | |
52087a79 LAD |
3550 | |
3551 | if (hci_conn_num(hdev, type) == num) | |
3552 | break; | |
1da177e4 LT |
3553 | } |
3554 | ||
bf4c6325 GP |
3555 | rcu_read_unlock(); |
3556 | ||
1da177e4 | 3557 | if (conn) { |
6ed58ec5 VT |
3558 | int cnt, q; |
3559 | ||
3560 | switch (conn->type) { | |
3561 | case ACL_LINK: | |
3562 | cnt = hdev->acl_cnt; | |
3563 | break; | |
3564 | case SCO_LINK: | |
3565 | case ESCO_LINK: | |
3566 | cnt = hdev->sco_cnt; | |
3567 | break; | |
3568 | case LE_LINK: | |
3569 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3570 | break; | |
3571 | default: | |
3572 | cnt = 0; | |
3573 | BT_ERR("Unknown link type"); | |
3574 | } | |
3575 | ||
3576 | q = cnt / num; | |
1da177e4 LT |
3577 | *quote = q ? q : 1; |
3578 | } else | |
3579 | *quote = 0; | |
3580 | ||
3581 | BT_DBG("conn %p quote %d", conn, *quote); | |
3582 | return conn; | |
3583 | } | |
3584 | ||
6039aa73 | 3585 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3586 | { |
3587 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3588 | struct hci_conn *c; |
1da177e4 | 3589 | |
bae1f5d9 | 3590 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3591 | |
bf4c6325 GP |
3592 | rcu_read_lock(); |
3593 | ||
1da177e4 | 3594 | /* Kill stalled connections */ |
bf4c6325 | 3595 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3596 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3597 | BT_ERR("%s killing stalled connection %pMR", |
3598 | hdev->name, &c->dst); | |
bed71748 | 3599 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3600 | } |
3601 | } | |
bf4c6325 GP |
3602 | |
3603 | rcu_read_unlock(); | |
1da177e4 LT |
3604 | } |
3605 | ||
6039aa73 GP |
3606 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3607 | int *quote) | |
1da177e4 | 3608 | { |
73d80deb LAD |
3609 | struct hci_conn_hash *h = &hdev->conn_hash; |
3610 | struct hci_chan *chan = NULL; | |
abc5de8f | 3611 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3612 | struct hci_conn *conn; |
73d80deb LAD |
3613 | int cnt, q, conn_num = 0; |
3614 | ||
3615 | BT_DBG("%s", hdev->name); | |
3616 | ||
bf4c6325 GP |
3617 | rcu_read_lock(); |
3618 | ||
3619 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3620 | struct hci_chan *tmp; |
3621 | ||
3622 | if (conn->type != type) | |
3623 | continue; | |
3624 | ||
3625 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3626 | continue; | |
3627 | ||
3628 | conn_num++; | |
3629 | ||
8192edef | 3630 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3631 | struct sk_buff *skb; |
3632 | ||
3633 | if (skb_queue_empty(&tmp->data_q)) | |
3634 | continue; | |
3635 | ||
3636 | skb = skb_peek(&tmp->data_q); | |
3637 | if (skb->priority < cur_prio) | |
3638 | continue; | |
3639 | ||
3640 | if (skb->priority > cur_prio) { | |
3641 | num = 0; | |
3642 | min = ~0; | |
3643 | cur_prio = skb->priority; | |
3644 | } | |
3645 | ||
3646 | num++; | |
3647 | ||
3648 | if (conn->sent < min) { | |
3649 | min = conn->sent; | |
3650 | chan = tmp; | |
3651 | } | |
3652 | } | |
3653 | ||
3654 | if (hci_conn_num(hdev, type) == conn_num) | |
3655 | break; | |
3656 | } | |
3657 | ||
bf4c6325 GP |
3658 | rcu_read_unlock(); |
3659 | ||
73d80deb LAD |
3660 | if (!chan) |
3661 | return NULL; | |
3662 | ||
3663 | switch (chan->conn->type) { | |
3664 | case ACL_LINK: | |
3665 | cnt = hdev->acl_cnt; | |
3666 | break; | |
bd1eb66b AE |
3667 | case AMP_LINK: |
3668 | cnt = hdev->block_cnt; | |
3669 | break; | |
73d80deb LAD |
3670 | case SCO_LINK: |
3671 | case ESCO_LINK: | |
3672 | cnt = hdev->sco_cnt; | |
3673 | break; | |
3674 | case LE_LINK: | |
3675 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3676 | break; | |
3677 | default: | |
3678 | cnt = 0; | |
3679 | BT_ERR("Unknown link type"); | |
3680 | } | |
3681 | ||
3682 | q = cnt / num; | |
3683 | *quote = q ? q : 1; | |
3684 | BT_DBG("chan %p quote %d", chan, *quote); | |
3685 | return chan; | |
3686 | } | |
3687 | ||
02b20f0b LAD |
3688 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3689 | { | |
3690 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3691 | struct hci_conn *conn; | |
3692 | int num = 0; | |
3693 | ||
3694 | BT_DBG("%s", hdev->name); | |
3695 | ||
bf4c6325 GP |
3696 | rcu_read_lock(); |
3697 | ||
3698 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3699 | struct hci_chan *chan; |
3700 | ||
3701 | if (conn->type != type) | |
3702 | continue; | |
3703 | ||
3704 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3705 | continue; | |
3706 | ||
3707 | num++; | |
3708 | ||
8192edef | 3709 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3710 | struct sk_buff *skb; |
3711 | ||
3712 | if (chan->sent) { | |
3713 | chan->sent = 0; | |
3714 | continue; | |
3715 | } | |
3716 | ||
3717 | if (skb_queue_empty(&chan->data_q)) | |
3718 | continue; | |
3719 | ||
3720 | skb = skb_peek(&chan->data_q); | |
3721 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3722 | continue; | |
3723 | ||
3724 | skb->priority = HCI_PRIO_MAX - 1; | |
3725 | ||
3726 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3727 | skb->priority); |
02b20f0b LAD |
3728 | } |
3729 | ||
3730 | if (hci_conn_num(hdev, type) == num) | |
3731 | break; | |
3732 | } | |
bf4c6325 GP |
3733 | |
3734 | rcu_read_unlock(); | |
3735 | ||
02b20f0b LAD |
3736 | } |
3737 | ||
b71d385a AE |
3738 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3739 | { | |
3740 | /* Calculate count of blocks used by this packet */ | |
3741 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3742 | } | |
3743 | ||
6039aa73 | 3744 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3745 | { |
d7a5a11d | 3746 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3747 | /* ACL tx timeout must be longer than maximum |
3748 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3749 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3750 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3751 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3752 | } |
63d2bc1b | 3753 | } |
1da177e4 | 3754 | |
6039aa73 | 3755 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3756 | { |
3757 | unsigned int cnt = hdev->acl_cnt; | |
3758 | struct hci_chan *chan; | |
3759 | struct sk_buff *skb; | |
3760 | int quote; | |
3761 | ||
3762 | __check_timeout(hdev, cnt); | |
04837f64 | 3763 | |
73d80deb | 3764 | while (hdev->acl_cnt && |
a8c5fb1a | 3765 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3766 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3767 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3768 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3769 | skb->len, skb->priority); |
73d80deb | 3770 | |
ec1cce24 LAD |
3771 | /* Stop if priority has changed */ |
3772 | if (skb->priority < priority) | |
3773 | break; | |
3774 | ||
3775 | skb = skb_dequeue(&chan->data_q); | |
3776 | ||
73d80deb | 3777 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3778 | bt_cb(skb)->force_active); |
04837f64 | 3779 | |
57d17d70 | 3780 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3781 | hdev->acl_last_tx = jiffies; |
3782 | ||
3783 | hdev->acl_cnt--; | |
73d80deb LAD |
3784 | chan->sent++; |
3785 | chan->conn->sent++; | |
1da177e4 LT |
3786 | } |
3787 | } | |
02b20f0b LAD |
3788 | |
3789 | if (cnt != hdev->acl_cnt) | |
3790 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3791 | } |
3792 | ||
6039aa73 | 3793 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3794 | { |
63d2bc1b | 3795 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3796 | struct hci_chan *chan; |
3797 | struct sk_buff *skb; | |
3798 | int quote; | |
bd1eb66b | 3799 | u8 type; |
b71d385a | 3800 | |
63d2bc1b | 3801 | __check_timeout(hdev, cnt); |
b71d385a | 3802 | |
bd1eb66b AE |
3803 | BT_DBG("%s", hdev->name); |
3804 | ||
3805 | if (hdev->dev_type == HCI_AMP) | |
3806 | type = AMP_LINK; | |
3807 | else | |
3808 | type = ACL_LINK; | |
3809 | ||
b71d385a | 3810 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3811 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3812 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3813 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3814 | int blocks; | |
3815 | ||
3816 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3817 | skb->len, skb->priority); |
b71d385a AE |
3818 | |
3819 | /* Stop if priority has changed */ | |
3820 | if (skb->priority < priority) | |
3821 | break; | |
3822 | ||
3823 | skb = skb_dequeue(&chan->data_q); | |
3824 | ||
3825 | blocks = __get_blocks(hdev, skb); | |
3826 | if (blocks > hdev->block_cnt) | |
3827 | return; | |
3828 | ||
3829 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3830 | bt_cb(skb)->force_active); |
b71d385a | 3831 | |
57d17d70 | 3832 | hci_send_frame(hdev, skb); |
b71d385a AE |
3833 | hdev->acl_last_tx = jiffies; |
3834 | ||
3835 | hdev->block_cnt -= blocks; | |
3836 | quote -= blocks; | |
3837 | ||
3838 | chan->sent += blocks; | |
3839 | chan->conn->sent += blocks; | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3844 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3845 | } |
3846 | ||
6039aa73 | 3847 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3848 | { |
3849 | BT_DBG("%s", hdev->name); | |
3850 | ||
bd1eb66b | 3851 | /* No ACL link over BR/EDR controller */ |
ca8bee5d | 3852 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY) |
bd1eb66b AE |
3853 | return; |
3854 | ||
3855 | /* No AMP link over AMP controller */ | |
3856 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3857 | return; |
3858 | ||
3859 | switch (hdev->flow_ctl_mode) { | |
3860 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3861 | hci_sched_acl_pkt(hdev); | |
3862 | break; | |
3863 | ||
3864 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3865 | hci_sched_acl_blk(hdev); | |
3866 | break; | |
3867 | } | |
3868 | } | |
3869 | ||
1da177e4 | 3870 | /* Schedule SCO */ |
6039aa73 | 3871 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3872 | { |
3873 | struct hci_conn *conn; | |
3874 | struct sk_buff *skb; | |
3875 | int quote; | |
3876 | ||
3877 | BT_DBG("%s", hdev->name); | |
3878 | ||
52087a79 LAD |
3879 | if (!hci_conn_num(hdev, SCO_LINK)) |
3880 | return; | |
3881 | ||
1da177e4 LT |
3882 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3883 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3884 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3885 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3886 | |
3887 | conn->sent++; | |
3888 | if (conn->sent == ~0) | |
3889 | conn->sent = 0; | |
3890 | } | |
3891 | } | |
3892 | } | |
3893 | ||
6039aa73 | 3894 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3895 | { |
3896 | struct hci_conn *conn; | |
3897 | struct sk_buff *skb; | |
3898 | int quote; | |
3899 | ||
3900 | BT_DBG("%s", hdev->name); | |
3901 | ||
52087a79 LAD |
3902 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3903 | return; | |
3904 | ||
8fc9ced3 GP |
3905 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3906 | "e))) { | |
b6a0dc82 MH |
3907 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3908 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3909 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3910 | |
3911 | conn->sent++; | |
3912 | if (conn->sent == ~0) | |
3913 | conn->sent = 0; | |
3914 | } | |
3915 | } | |
3916 | } | |
3917 | ||
6039aa73 | 3918 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3919 | { |
73d80deb | 3920 | struct hci_chan *chan; |
6ed58ec5 | 3921 | struct sk_buff *skb; |
02b20f0b | 3922 | int quote, cnt, tmp; |
6ed58ec5 VT |
3923 | |
3924 | BT_DBG("%s", hdev->name); | |
3925 | ||
52087a79 LAD |
3926 | if (!hci_conn_num(hdev, LE_LINK)) |
3927 | return; | |
3928 | ||
d7a5a11d | 3929 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
3930 | /* LE tx timeout must be longer than maximum |
3931 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3932 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3933 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3934 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3935 | } |
3936 | ||
3937 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3938 | tmp = cnt; |
73d80deb | 3939 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3940 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3941 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3942 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3943 | skb->len, skb->priority); |
6ed58ec5 | 3944 | |
ec1cce24 LAD |
3945 | /* Stop if priority has changed */ |
3946 | if (skb->priority < priority) | |
3947 | break; | |
3948 | ||
3949 | skb = skb_dequeue(&chan->data_q); | |
3950 | ||
57d17d70 | 3951 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3952 | hdev->le_last_tx = jiffies; |
3953 | ||
3954 | cnt--; | |
73d80deb LAD |
3955 | chan->sent++; |
3956 | chan->conn->sent++; | |
6ed58ec5 VT |
3957 | } |
3958 | } | |
73d80deb | 3959 | |
6ed58ec5 VT |
3960 | if (hdev->le_pkts) |
3961 | hdev->le_cnt = cnt; | |
3962 | else | |
3963 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3964 | |
3965 | if (cnt != tmp) | |
3966 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3967 | } |
3968 | ||
3eff45ea | 3969 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3970 | { |
3eff45ea | 3971 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3972 | struct sk_buff *skb; |
3973 | ||
6ed58ec5 | 3974 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3975 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3976 | |
d7a5a11d | 3977 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
3978 | /* Schedule queues and send stuff to HCI driver */ |
3979 | hci_sched_acl(hdev); | |
3980 | hci_sched_sco(hdev); | |
3981 | hci_sched_esco(hdev); | |
3982 | hci_sched_le(hdev); | |
3983 | } | |
6ed58ec5 | 3984 | |
1da177e4 LT |
3985 | /* Send next queued raw (unknown type) packet */ |
3986 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3987 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3988 | } |
3989 | ||
25985edc | 3990 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3991 | |
3992 | /* ACL data packet */ | |
6039aa73 | 3993 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3994 | { |
3995 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3996 | struct hci_conn *conn; | |
3997 | __u16 handle, flags; | |
3998 | ||
3999 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4000 | ||
4001 | handle = __le16_to_cpu(hdr->handle); | |
4002 | flags = hci_flags(handle); | |
4003 | handle = hci_handle(handle); | |
4004 | ||
f0e09510 | 4005 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4006 | handle, flags); |
1da177e4 LT |
4007 | |
4008 | hdev->stat.acl_rx++; | |
4009 | ||
4010 | hci_dev_lock(hdev); | |
4011 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4012 | hci_dev_unlock(hdev); | |
8e87d142 | 4013 | |
1da177e4 | 4014 | if (conn) { |
65983fc7 | 4015 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4016 | |
1da177e4 | 4017 | /* Send to upper protocol */ |
686ebf28 UF |
4018 | l2cap_recv_acldata(conn, skb, flags); |
4019 | return; | |
1da177e4 | 4020 | } else { |
8e87d142 | 4021 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4022 | hdev->name, handle); |
1da177e4 LT |
4023 | } |
4024 | ||
4025 | kfree_skb(skb); | |
4026 | } | |
4027 | ||
4028 | /* SCO data packet */ | |
6039aa73 | 4029 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4030 | { |
4031 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4032 | struct hci_conn *conn; | |
4033 | __u16 handle; | |
4034 | ||
4035 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4036 | ||
4037 | handle = __le16_to_cpu(hdr->handle); | |
4038 | ||
f0e09510 | 4039 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4040 | |
4041 | hdev->stat.sco_rx++; | |
4042 | ||
4043 | hci_dev_lock(hdev); | |
4044 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4045 | hci_dev_unlock(hdev); | |
4046 | ||
4047 | if (conn) { | |
1da177e4 | 4048 | /* Send to upper protocol */ |
686ebf28 UF |
4049 | sco_recv_scodata(conn, skb); |
4050 | return; | |
1da177e4 | 4051 | } else { |
8e87d142 | 4052 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4053 | hdev->name, handle); |
1da177e4 LT |
4054 | } |
4055 | ||
4056 | kfree_skb(skb); | |
4057 | } | |
4058 | ||
9238f36a JH |
4059 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4060 | { | |
4061 | struct sk_buff *skb; | |
4062 | ||
4063 | skb = skb_peek(&hdev->cmd_q); | |
4064 | if (!skb) | |
4065 | return true; | |
4066 | ||
44d27137 | 4067 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4068 | } |
4069 | ||
42c6b129 JH |
4070 | static void hci_resend_last(struct hci_dev *hdev) |
4071 | { | |
4072 | struct hci_command_hdr *sent; | |
4073 | struct sk_buff *skb; | |
4074 | u16 opcode; | |
4075 | ||
4076 | if (!hdev->sent_cmd) | |
4077 | return; | |
4078 | ||
4079 | sent = (void *) hdev->sent_cmd->data; | |
4080 | opcode = __le16_to_cpu(sent->opcode); | |
4081 | if (opcode == HCI_OP_RESET) | |
4082 | return; | |
4083 | ||
4084 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4085 | if (!skb) | |
4086 | return; | |
4087 | ||
4088 | skb_queue_head(&hdev->cmd_q, skb); | |
4089 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4090 | } | |
4091 | ||
e6214487 JH |
4092 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4093 | hci_req_complete_t *req_complete, | |
4094 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4095 | { |
9238f36a JH |
4096 | struct sk_buff *skb; |
4097 | unsigned long flags; | |
4098 | ||
4099 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4100 | ||
42c6b129 JH |
4101 | /* If the completed command doesn't match the last one that was |
4102 | * sent we need to do special handling of it. | |
9238f36a | 4103 | */ |
42c6b129 JH |
4104 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4105 | /* Some CSR based controllers generate a spontaneous | |
4106 | * reset complete event during init and any pending | |
4107 | * command will never be completed. In such a case we | |
4108 | * need to resend whatever was the last sent | |
4109 | * command. | |
4110 | */ | |
4111 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4112 | hci_resend_last(hdev); | |
4113 | ||
9238f36a | 4114 | return; |
42c6b129 | 4115 | } |
9238f36a JH |
4116 | |
4117 | /* If the command succeeded and there's still more commands in | |
4118 | * this request the request is not yet complete. | |
4119 | */ | |
4120 | if (!status && !hci_req_is_complete(hdev)) | |
4121 | return; | |
4122 | ||
4123 | /* If this was the last command in a request the complete | |
4124 | * callback would be found in hdev->sent_cmd instead of the | |
4125 | * command queue (hdev->cmd_q). | |
4126 | */ | |
44d27137 JH |
4127 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
4128 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
4129 | return; |
4130 | } | |
53e21fbc | 4131 | |
44d27137 JH |
4132 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4133 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 4134 | return; |
9238f36a JH |
4135 | } |
4136 | ||
4137 | /* Remove all pending commands belonging to this request */ | |
4138 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4139 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4140 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4141 | __skb_queue_head(&hdev->cmd_q, skb); |
4142 | break; | |
4143 | } | |
4144 | ||
3bd7594e DA |
4145 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
4146 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
4147 | else | |
4148 | *req_complete = bt_cb(skb)->hci.req_complete; | |
9238f36a JH |
4149 | kfree_skb(skb); |
4150 | } | |
4151 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4152 | } |
4153 | ||
b78752cc | 4154 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4155 | { |
b78752cc | 4156 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4157 | struct sk_buff *skb; |
4158 | ||
4159 | BT_DBG("%s", hdev->name); | |
4160 | ||
1da177e4 | 4161 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4162 | /* Send copy to monitor */ |
4163 | hci_send_to_monitor(hdev, skb); | |
4164 | ||
1da177e4 LT |
4165 | if (atomic_read(&hdev->promisc)) { |
4166 | /* Send copy to the sockets */ | |
470fe1b5 | 4167 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4168 | } |
4169 | ||
d7a5a11d | 4170 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4171 | kfree_skb(skb); |
4172 | continue; | |
4173 | } | |
4174 | ||
4175 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4176 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4177 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4178 | case HCI_ACLDATA_PKT: |
4179 | case HCI_SCODATA_PKT: | |
4180 | kfree_skb(skb); | |
4181 | continue; | |
3ff50b79 | 4182 | } |
1da177e4 LT |
4183 | } |
4184 | ||
4185 | /* Process frame */ | |
d79f34e3 | 4186 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4187 | case HCI_EVENT_PKT: |
b78752cc | 4188 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4189 | hci_event_packet(hdev, skb); |
4190 | break; | |
4191 | ||
4192 | case HCI_ACLDATA_PKT: | |
4193 | BT_DBG("%s ACL data packet", hdev->name); | |
4194 | hci_acldata_packet(hdev, skb); | |
4195 | break; | |
4196 | ||
4197 | case HCI_SCODATA_PKT: | |
4198 | BT_DBG("%s SCO data packet", hdev->name); | |
4199 | hci_scodata_packet(hdev, skb); | |
4200 | break; | |
4201 | ||
4202 | default: | |
4203 | kfree_skb(skb); | |
4204 | break; | |
4205 | } | |
4206 | } | |
1da177e4 LT |
4207 | } |
4208 | ||
c347b765 | 4209 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4210 | { |
c347b765 | 4211 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4212 | struct sk_buff *skb; |
4213 | ||
2104786b AE |
4214 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4215 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4216 | |
1da177e4 | 4217 | /* Send queued commands */ |
5a08ecce AE |
4218 | if (atomic_read(&hdev->cmd_cnt)) { |
4219 | skb = skb_dequeue(&hdev->cmd_q); | |
4220 | if (!skb) | |
4221 | return; | |
4222 | ||
7585b97a | 4223 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4224 | |
a675d7f1 | 4225 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4226 | if (hdev->sent_cmd) { |
1da177e4 | 4227 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4228 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4229 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4230 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4231 | else |
65cc2b49 MH |
4232 | schedule_delayed_work(&hdev->cmd_timer, |
4233 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4234 | } else { |
4235 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4236 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4237 | } |
4238 | } | |
4239 | } |