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; | |
4b4148e9 | 79 | bool enable; |
3bf5e97d | 80 | int err; |
4b4148e9 MH |
81 | |
82 | if (!test_bit(HCI_UP, &hdev->flags)) | |
83 | return -ENETDOWN; | |
84 | ||
3bf5e97d AS |
85 | err = kstrtobool_from_user(user_buf, count, &enable); |
86 | if (err) | |
87 | return err; | |
4b4148e9 | 88 | |
b7cb93e5 | 89 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
90 | return -EALREADY; |
91 | ||
b504430c | 92 | hci_req_sync_lock(hdev); |
4b4148e9 MH |
93 | if (enable) |
94 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
95 | HCI_CMD_TIMEOUT); | |
96 | else | |
97 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
98 | HCI_CMD_TIMEOUT); | |
b504430c | 99 | hci_req_sync_unlock(hdev); |
4b4148e9 MH |
100 | |
101 | if (IS_ERR(skb)) | |
102 | return PTR_ERR(skb); | |
103 | ||
4b4148e9 MH |
104 | kfree_skb(skb); |
105 | ||
b7cb93e5 | 106 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
107 | |
108 | return count; | |
109 | } | |
110 | ||
111 | static const struct file_operations dut_mode_fops = { | |
112 | .open = simple_open, | |
113 | .read = dut_mode_read, | |
114 | .write = dut_mode_write, | |
115 | .llseek = default_llseek, | |
116 | }; | |
117 | ||
4b4113d6 MH |
118 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
119 | size_t count, loff_t *ppos) | |
120 | { | |
121 | struct hci_dev *hdev = file->private_data; | |
122 | char buf[3]; | |
123 | ||
74b93e9f | 124 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; |
4b4113d6 MH |
125 | buf[1] = '\n'; |
126 | buf[2] = '\0'; | |
127 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
128 | } | |
129 | ||
130 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
131 | size_t count, loff_t *ppos) | |
132 | { | |
133 | struct hci_dev *hdev = file->private_data; | |
4b4113d6 MH |
134 | bool enable; |
135 | int err; | |
136 | ||
3bf5e97d AS |
137 | err = kstrtobool_from_user(user_buf, count, &enable); |
138 | if (err) | |
139 | return err; | |
4b4113d6 | 140 | |
7e995b9e | 141 | /* When the diagnostic flags are not persistent and the transport |
b56c7b25 MH |
142 | * is not active or in user channel operation, then there is no need |
143 | * for the vendor callback. Instead just store the desired value and | |
144 | * the setting will be programmed when the controller gets powered on. | |
7e995b9e MH |
145 | */ |
146 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
b56c7b25 MH |
147 | (!test_bit(HCI_RUNNING, &hdev->flags) || |
148 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL))) | |
7e995b9e MH |
149 | goto done; |
150 | ||
b504430c | 151 | hci_req_sync_lock(hdev); |
4b4113d6 | 152 | err = hdev->set_diag(hdev, enable); |
b504430c | 153 | hci_req_sync_unlock(hdev); |
4b4113d6 MH |
154 | |
155 | if (err < 0) | |
156 | return err; | |
157 | ||
7e995b9e | 158 | done: |
4b4113d6 MH |
159 | if (enable) |
160 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
161 | else | |
162 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
163 | ||
164 | return count; | |
165 | } | |
166 | ||
167 | static const struct file_operations vendor_diag_fops = { | |
168 | .open = simple_open, | |
169 | .read = vendor_diag_read, | |
170 | .write = vendor_diag_write, | |
171 | .llseek = default_llseek, | |
172 | }; | |
173 | ||
f640ee98 MH |
174 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
175 | { | |
176 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
177 | &dut_mode_fops); | |
178 | ||
179 | if (hdev->set_diag) | |
180 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
181 | &vendor_diag_fops); | |
182 | } | |
183 | ||
a1d01db1 | 184 | static int hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 185 | { |
42c6b129 | 186 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
187 | |
188 | /* Reset device */ | |
42c6b129 JH |
189 | set_bit(HCI_RESET, &req->hdev->flags); |
190 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
a1d01db1 | 191 | return 0; |
1da177e4 LT |
192 | } |
193 | ||
42c6b129 | 194 | static void bredr_init(struct hci_request *req) |
1da177e4 | 195 | { |
42c6b129 | 196 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 197 | |
1da177e4 | 198 | /* Read Local Supported Features */ |
42c6b129 | 199 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 200 | |
1143e5a6 | 201 | /* Read Local Version */ |
42c6b129 | 202 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
203 | |
204 | /* Read BD Address */ | |
42c6b129 | 205 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
206 | } |
207 | ||
0af801b9 | 208 | static void amp_init1(struct hci_request *req) |
e61ef499 | 209 | { |
42c6b129 | 210 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 211 | |
e61ef499 | 212 | /* Read Local Version */ |
42c6b129 | 213 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 214 | |
f6996cfe MH |
215 | /* Read Local Supported Commands */ |
216 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
217 | ||
6bcbc489 | 218 | /* Read Local AMP Info */ |
42c6b129 | 219 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
220 | |
221 | /* Read Data Blk size */ | |
42c6b129 | 222 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 223 | |
f38ba941 MH |
224 | /* Read Flow Control Mode */ |
225 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
226 | ||
7528ca1c MH |
227 | /* Read Location Data */ |
228 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
229 | } |
230 | ||
a1d01db1 | 231 | static int amp_init2(struct hci_request *req) |
0af801b9 JH |
232 | { |
233 | /* Read Local Supported Features. Not all AMP controllers | |
234 | * support this so it's placed conditionally in the second | |
235 | * stage init. | |
236 | */ | |
237 | if (req->hdev->commands[14] & 0x20) | |
238 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
a1d01db1 JH |
239 | |
240 | return 0; | |
0af801b9 JH |
241 | } |
242 | ||
a1d01db1 | 243 | static int hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 244 | { |
42c6b129 | 245 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
246 | |
247 | BT_DBG("%s %ld", hdev->name, opt); | |
248 | ||
11778716 AE |
249 | /* Reset */ |
250 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 251 | hci_reset_req(req, 0); |
11778716 | 252 | |
e61ef499 | 253 | switch (hdev->dev_type) { |
ca8bee5d | 254 | case HCI_PRIMARY: |
42c6b129 | 255 | bredr_init(req); |
e61ef499 | 256 | break; |
e61ef499 | 257 | case HCI_AMP: |
0af801b9 | 258 | amp_init1(req); |
e61ef499 | 259 | break; |
e61ef499 | 260 | default: |
2064ee33 | 261 | bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type); |
e61ef499 AE |
262 | break; |
263 | } | |
a1d01db1 JH |
264 | |
265 | return 0; | |
e61ef499 AE |
266 | } |
267 | ||
42c6b129 | 268 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 269 | { |
2177bab5 JH |
270 | __le16 param; |
271 | __u8 flt_type; | |
272 | ||
273 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 274 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
275 | |
276 | /* Read Class of Device */ | |
42c6b129 | 277 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
278 | |
279 | /* Read Local Name */ | |
42c6b129 | 280 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
281 | |
282 | /* Read Voice Setting */ | |
42c6b129 | 283 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 284 | |
b4cb9fb2 MH |
285 | /* Read Number of Supported IAC */ |
286 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
287 | ||
4b836f39 MH |
288 | /* Read Current IAC LAP */ |
289 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
290 | ||
2177bab5 JH |
291 | /* Clear Event Filters */ |
292 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 293 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
294 | |
295 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 296 | param = cpu_to_le16(0x7d00); |
42c6b129 | 297 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
298 | } |
299 | ||
42c6b129 | 300 | static void le_setup(struct hci_request *req) |
2177bab5 | 301 | { |
c73eee91 JH |
302 | struct hci_dev *hdev = req->hdev; |
303 | ||
2177bab5 | 304 | /* Read LE Buffer Size */ |
42c6b129 | 305 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
306 | |
307 | /* Read LE Local Supported Features */ | |
42c6b129 | 308 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 309 | |
747d3f03 MH |
310 | /* Read LE Supported States */ |
311 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
312 | ||
c73eee91 JH |
313 | /* LE-only controllers have LE implicitly enabled */ |
314 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 315 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
316 | } |
317 | ||
42c6b129 | 318 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 319 | { |
42c6b129 JH |
320 | struct hci_dev *hdev = req->hdev; |
321 | ||
2177bab5 JH |
322 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
323 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
324 | * command otherwise. | |
325 | */ | |
326 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
327 | ||
328 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
329 | * any event mask for pre 1.2 devices. | |
330 | */ | |
331 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
332 | return; | |
333 | ||
334 | if (lmp_bredr_capable(hdev)) { | |
335 | events[4] |= 0x01; /* Flow Specification Complete */ | |
c7882cbd MH |
336 | } else { |
337 | /* Use a different default for LE-only devices */ | |
338 | memset(events, 0, sizeof(events)); | |
c7882cbd MH |
339 | events[1] |= 0x20; /* Command Complete */ |
340 | events[1] |= 0x40; /* Command Status */ | |
341 | events[1] |= 0x80; /* Hardware Error */ | |
5c3d3b4c MH |
342 | |
343 | /* If the controller supports the Disconnect command, enable | |
344 | * the corresponding event. In addition enable packet flow | |
345 | * control related events. | |
346 | */ | |
347 | if (hdev->commands[0] & 0x20) { | |
348 | events[0] |= 0x10; /* Disconnection Complete */ | |
349 | events[2] |= 0x04; /* Number of Completed Packets */ | |
350 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
351 | } | |
352 | ||
353 | /* If the controller supports the Read Remote Version | |
354 | * Information command, enable the corresponding event. | |
355 | */ | |
356 | if (hdev->commands[2] & 0x80) | |
357 | events[1] |= 0x08; /* Read Remote Version Information | |
358 | * Complete | |
359 | */ | |
0da71f1b MH |
360 | |
361 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
362 | events[0] |= 0x80; /* Encryption Change */ | |
363 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
364 | } | |
2177bab5 JH |
365 | } |
366 | ||
9fe759ce MH |
367 | if (lmp_inq_rssi_capable(hdev) || |
368 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2177bab5 JH |
369 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
370 | ||
70f56aa2 MH |
371 | if (lmp_ext_feat_capable(hdev)) |
372 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
373 | ||
374 | if (lmp_esco_capable(hdev)) { | |
375 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
376 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
377 | } | |
378 | ||
2177bab5 JH |
379 | if (lmp_sniffsubr_capable(hdev)) |
380 | events[5] |= 0x20; /* Sniff Subrating */ | |
381 | ||
382 | if (lmp_pause_enc_capable(hdev)) | |
383 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
384 | ||
385 | if (lmp_ext_inq_capable(hdev)) | |
386 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
387 | ||
388 | if (lmp_no_flush_capable(hdev)) | |
389 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
390 | ||
391 | if (lmp_lsto_capable(hdev)) | |
392 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
393 | ||
394 | if (lmp_ssp_capable(hdev)) { | |
395 | events[6] |= 0x01; /* IO Capability Request */ | |
396 | events[6] |= 0x02; /* IO Capability Response */ | |
397 | events[6] |= 0x04; /* User Confirmation Request */ | |
398 | events[6] |= 0x08; /* User Passkey Request */ | |
399 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
400 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
401 | events[7] |= 0x04; /* User Passkey Notification */ | |
402 | events[7] |= 0x08; /* Keypress Notification */ | |
403 | events[7] |= 0x10; /* Remote Host Supported | |
404 | * Features Notification | |
405 | */ | |
406 | } | |
407 | ||
408 | if (lmp_le_capable(hdev)) | |
409 | events[7] |= 0x20; /* LE Meta-Event */ | |
410 | ||
42c6b129 | 411 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
412 | } |
413 | ||
a1d01db1 | 414 | static int hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 415 | { |
42c6b129 JH |
416 | struct hci_dev *hdev = req->hdev; |
417 | ||
0af801b9 JH |
418 | if (hdev->dev_type == HCI_AMP) |
419 | return amp_init2(req); | |
420 | ||
2177bab5 | 421 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 422 | bredr_setup(req); |
56f87901 | 423 | else |
a358dc11 | 424 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
425 | |
426 | if (lmp_le_capable(hdev)) | |
42c6b129 | 427 | le_setup(req); |
2177bab5 | 428 | |
0f3adeae MH |
429 | /* All Bluetooth 1.2 and later controllers should support the |
430 | * HCI command for reading the local supported commands. | |
431 | * | |
432 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
433 | * but do not have support for this command. If that is the case, | |
434 | * the driver can quirk the behavior and skip reading the local | |
435 | * supported commands. | |
3f8e2d75 | 436 | */ |
0f3adeae MH |
437 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
438 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 439 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
440 | |
441 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
442 | /* When SSP is available, then the host features page |
443 | * should also be available as well. However some | |
444 | * controllers list the max_page as 0 as long as SSP | |
445 | * has not been enabled. To achieve proper debugging | |
446 | * output, force the minimum max_page to 1 at least. | |
447 | */ | |
448 | hdev->max_page = 0x01; | |
449 | ||
d7a5a11d | 450 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 451 | u8 mode = 0x01; |
574ea3c7 | 452 | |
42c6b129 JH |
453 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
454 | sizeof(mode), &mode); | |
2177bab5 JH |
455 | } else { |
456 | struct hci_cp_write_eir cp; | |
457 | ||
458 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
459 | memset(&cp, 0, sizeof(cp)); | |
460 | ||
42c6b129 | 461 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
462 | } |
463 | } | |
464 | ||
043ec9bf MH |
465 | if (lmp_inq_rssi_capable(hdev) || |
466 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
467 | u8 mode; |
468 | ||
469 | /* If Extended Inquiry Result events are supported, then | |
470 | * they are clearly preferred over Inquiry Result with RSSI | |
471 | * events. | |
472 | */ | |
473 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
474 | ||
475 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
476 | } | |
2177bab5 JH |
477 | |
478 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 479 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
480 | |
481 | if (lmp_ext_feat_capable(hdev)) { | |
482 | struct hci_cp_read_local_ext_features cp; | |
483 | ||
484 | cp.page = 0x01; | |
42c6b129 JH |
485 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
486 | sizeof(cp), &cp); | |
2177bab5 JH |
487 | } |
488 | ||
d7a5a11d | 489 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 490 | u8 enable = 1; |
42c6b129 JH |
491 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
492 | &enable); | |
2177bab5 | 493 | } |
a1d01db1 JH |
494 | |
495 | return 0; | |
2177bab5 JH |
496 | } |
497 | ||
42c6b129 | 498 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 499 | { |
42c6b129 | 500 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
501 | struct hci_cp_write_def_link_policy cp; |
502 | u16 link_policy = 0; | |
503 | ||
504 | if (lmp_rswitch_capable(hdev)) | |
505 | link_policy |= HCI_LP_RSWITCH; | |
506 | if (lmp_hold_capable(hdev)) | |
507 | link_policy |= HCI_LP_HOLD; | |
508 | if (lmp_sniff_capable(hdev)) | |
509 | link_policy |= HCI_LP_SNIFF; | |
510 | if (lmp_park_capable(hdev)) | |
511 | link_policy |= HCI_LP_PARK; | |
512 | ||
513 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 514 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
515 | } |
516 | ||
42c6b129 | 517 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 518 | { |
42c6b129 | 519 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
520 | struct hci_cp_write_le_host_supported cp; |
521 | ||
c73eee91 JH |
522 | /* LE-only devices do not support explicit enablement */ |
523 | if (!lmp_bredr_capable(hdev)) | |
524 | return; | |
525 | ||
2177bab5 JH |
526 | memset(&cp, 0, sizeof(cp)); |
527 | ||
d7a5a11d | 528 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 529 | cp.le = 0x01; |
32226e4f | 530 | cp.simul = 0x00; |
2177bab5 JH |
531 | } |
532 | ||
533 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
534 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
535 | &cp); | |
2177bab5 JH |
536 | } |
537 | ||
d62e6d67 JH |
538 | static void hci_set_event_mask_page_2(struct hci_request *req) |
539 | { | |
540 | struct hci_dev *hdev = req->hdev; | |
541 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
313f6888 | 542 | bool changed = false; |
d62e6d67 JH |
543 | |
544 | /* If Connectionless Slave Broadcast master role is supported | |
545 | * enable all necessary events for it. | |
546 | */ | |
53b834d2 | 547 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
548 | events[1] |= 0x40; /* Triggered Clock Capture */ |
549 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
550 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
551 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
313f6888 | 552 | changed = true; |
d62e6d67 JH |
553 | } |
554 | ||
555 | /* If Connectionless Slave Broadcast slave role is supported | |
556 | * enable all necessary events for it. | |
557 | */ | |
53b834d2 | 558 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
559 | events[2] |= 0x01; /* Synchronization Train Received */ |
560 | events[2] |= 0x02; /* CSB Receive */ | |
561 | events[2] |= 0x04; /* CSB Timeout */ | |
562 | events[2] |= 0x08; /* Truncated Page Complete */ | |
313f6888 | 563 | changed = true; |
d62e6d67 JH |
564 | } |
565 | ||
40c59fcb | 566 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
313f6888 | 567 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) { |
40c59fcb | 568 | events[2] |= 0x80; |
313f6888 MH |
569 | changed = true; |
570 | } | |
40c59fcb | 571 | |
313f6888 MH |
572 | /* Some Broadcom based controllers indicate support for Set Event |
573 | * Mask Page 2 command, but then actually do not support it. Since | |
574 | * the default value is all bits set to zero, the command is only | |
575 | * required if the event mask has to be changed. In case no change | |
576 | * to the event mask is needed, skip this command. | |
577 | */ | |
578 | if (changed) | |
579 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, | |
580 | sizeof(events), events); | |
d62e6d67 JH |
581 | } |
582 | ||
a1d01db1 | 583 | static int hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 584 | { |
42c6b129 | 585 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 586 | u8 p; |
42c6b129 | 587 | |
0da71f1b MH |
588 | hci_setup_event_mask(req); |
589 | ||
e81be90b JH |
590 | if (hdev->commands[6] & 0x20 && |
591 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
592 | struct hci_cp_read_stored_link_key cp; |
593 | ||
594 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
595 | cp.read_all = 0x01; | |
596 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
597 | } | |
598 | ||
2177bab5 | 599 | if (hdev->commands[5] & 0x10) |
42c6b129 | 600 | hci_setup_link_policy(req); |
2177bab5 | 601 | |
417287de MH |
602 | if (hdev->commands[8] & 0x01) |
603 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
604 | ||
605 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
606 | * support the Read Page Scan Type command. Check support for | |
607 | * this command in the bit mask of supported commands. | |
608 | */ | |
609 | if (hdev->commands[13] & 0x01) | |
610 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
611 | ||
9193c6e8 AG |
612 | if (lmp_le_capable(hdev)) { |
613 | u8 events[8]; | |
614 | ||
615 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
616 | |
617 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
618 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
619 | |
620 | /* If controller supports the Connection Parameters Request | |
621 | * Link Layer Procedure, enable the corresponding event. | |
622 | */ | |
623 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
624 | events[0] |= 0x20; /* LE Remote Connection | |
625 | * Parameter Request | |
626 | */ | |
627 | ||
a9f6068e MH |
628 | /* If the controller supports the Data Length Extension |
629 | * feature, enable the corresponding event. | |
630 | */ | |
631 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
632 | events[0] |= 0x40; /* LE Data Length Change */ | |
633 | ||
4b71bba4 MH |
634 | /* If the controller supports Extended Scanner Filter |
635 | * Policies, enable the correspondig event. | |
636 | */ | |
637 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
638 | events[1] |= 0x04; /* LE Direct Advertising | |
639 | * Report | |
640 | */ | |
641 | ||
9756d33b MH |
642 | /* If the controller supports Channel Selection Algorithm #2 |
643 | * feature, enable the corresponding event. | |
644 | */ | |
645 | if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2) | |
646 | events[2] |= 0x08; /* LE Channel Selection | |
647 | * Algorithm | |
648 | */ | |
649 | ||
7d26f5c4 MH |
650 | /* If the controller supports the LE Set Scan Enable command, |
651 | * enable the corresponding advertising report event. | |
652 | */ | |
653 | if (hdev->commands[26] & 0x08) | |
654 | events[0] |= 0x02; /* LE Advertising Report */ | |
655 | ||
656 | /* If the controller supports the LE Create Connection | |
657 | * command, enable the corresponding event. | |
658 | */ | |
659 | if (hdev->commands[26] & 0x10) | |
660 | events[0] |= 0x01; /* LE Connection Complete */ | |
661 | ||
662 | /* If the controller supports the LE Connection Update | |
663 | * command, enable the corresponding event. | |
664 | */ | |
665 | if (hdev->commands[27] & 0x04) | |
666 | events[0] |= 0x04; /* LE Connection Update | |
667 | * Complete | |
668 | */ | |
669 | ||
670 | /* If the controller supports the LE Read Remote Used Features | |
671 | * command, enable the corresponding event. | |
672 | */ | |
673 | if (hdev->commands[27] & 0x20) | |
674 | events[0] |= 0x08; /* LE Read Remote Used | |
675 | * Features Complete | |
676 | */ | |
677 | ||
5a34bd5f MH |
678 | /* If the controller supports the LE Read Local P-256 |
679 | * Public Key command, enable the corresponding event. | |
680 | */ | |
681 | if (hdev->commands[34] & 0x02) | |
682 | events[0] |= 0x80; /* LE Read Local P-256 | |
683 | * Public Key Complete | |
684 | */ | |
685 | ||
686 | /* If the controller supports the LE Generate DHKey | |
687 | * command, enable the corresponding event. | |
688 | */ | |
689 | if (hdev->commands[34] & 0x04) | |
690 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
691 | ||
27bbca44 MH |
692 | /* If the controller supports the LE Set Default PHY or |
693 | * LE Set PHY commands, enable the corresponding event. | |
694 | */ | |
695 | if (hdev->commands[35] & (0x20 | 0x40)) | |
696 | events[1] |= 0x08; /* LE PHY Update Complete */ | |
697 | ||
9193c6e8 AG |
698 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
699 | events); | |
700 | ||
15a49cca MH |
701 | if (hdev->commands[25] & 0x40) { |
702 | /* Read LE Advertising Channel TX Power */ | |
703 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
704 | } | |
705 | ||
2ab216a7 MH |
706 | if (hdev->commands[26] & 0x40) { |
707 | /* Read LE White List Size */ | |
708 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, | |
709 | 0, NULL); | |
710 | } | |
711 | ||
712 | if (hdev->commands[26] & 0x80) { | |
713 | /* Clear LE White List */ | |
714 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
715 | } | |
716 | ||
a9f6068e MH |
717 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
718 | /* Read LE Maximum Data Length */ | |
719 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
720 | ||
721 | /* Read LE Suggested Default Data Length */ | |
722 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
723 | } | |
724 | ||
42c6b129 | 725 | hci_set_le_support(req); |
9193c6e8 | 726 | } |
d2c5d77f JH |
727 | |
728 | /* Read features beyond page 1 if available */ | |
729 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
730 | struct hci_cp_read_local_ext_features cp; | |
731 | ||
732 | cp.page = p; | |
733 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
734 | sizeof(cp), &cp); | |
735 | } | |
a1d01db1 JH |
736 | |
737 | return 0; | |
2177bab5 JH |
738 | } |
739 | ||
a1d01db1 | 740 | static int hci_init4_req(struct hci_request *req, unsigned long opt) |
5d4e7e8d JH |
741 | { |
742 | struct hci_dev *hdev = req->hdev; | |
743 | ||
36f260ce MH |
744 | /* Some Broadcom based Bluetooth controllers do not support the |
745 | * Delete Stored Link Key command. They are clearly indicating its | |
746 | * absence in the bit mask of supported commands. | |
747 | * | |
748 | * Check the supported commands and only if the the command is marked | |
749 | * as supported send it. If not supported assume that the controller | |
750 | * does not have actual support for stored link keys which makes this | |
751 | * command redundant anyway. | |
752 | * | |
753 | * Some controllers indicate that they support handling deleting | |
754 | * stored link keys, but they don't. The quirk lets a driver | |
755 | * just disable this command. | |
756 | */ | |
757 | if (hdev->commands[6] & 0x80 && | |
758 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
759 | struct hci_cp_delete_stored_link_key cp; | |
760 | ||
761 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
762 | cp.delete_all = 0x01; | |
763 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
764 | sizeof(cp), &cp); | |
765 | } | |
766 | ||
d62e6d67 JH |
767 | /* Set event mask page 2 if the HCI command for it is supported */ |
768 | if (hdev->commands[22] & 0x04) | |
769 | hci_set_event_mask_page_2(req); | |
770 | ||
109e3191 MH |
771 | /* Read local codec list if the HCI command is supported */ |
772 | if (hdev->commands[29] & 0x20) | |
773 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
774 | ||
f4fe73ed MH |
775 | /* Get MWS transport configuration if the HCI command is supported */ |
776 | if (hdev->commands[30] & 0x08) | |
777 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
778 | ||
5d4e7e8d | 779 | /* Check for Synchronization Train support */ |
53b834d2 | 780 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 781 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
782 | |
783 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 784 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 785 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 786 | u8 support = 0x01; |
574ea3c7 | 787 | |
a6d0d690 MH |
788 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
789 | sizeof(support), &support); | |
790 | } | |
a1d01db1 | 791 | |
12204875 MH |
792 | /* Set Suggested Default Data Length to maximum if supported */ |
793 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { | |
794 | struct hci_cp_le_write_def_data_len cp; | |
795 | ||
796 | cp.tx_len = hdev->le_max_tx_len; | |
797 | cp.tx_time = hdev->le_max_tx_time; | |
798 | hci_req_add(req, HCI_OP_LE_WRITE_DEF_DATA_LEN, sizeof(cp), &cp); | |
799 | } | |
800 | ||
de2ba303 MH |
801 | /* Set Default PHY parameters if command is supported */ |
802 | if (hdev->commands[35] & 0x20) { | |
803 | struct hci_cp_le_set_default_phy cp; | |
804 | ||
805 | /* No transmitter PHY or receiver PHY preferences */ | |
806 | cp.all_phys = 0x03; | |
807 | cp.tx_phys = 0; | |
808 | cp.rx_phys = 0; | |
809 | ||
810 | hci_req_add(req, HCI_OP_LE_SET_DEFAULT_PHY, sizeof(cp), &cp); | |
811 | } | |
812 | ||
a1d01db1 | 813 | return 0; |
5d4e7e8d JH |
814 | } |
815 | ||
2177bab5 JH |
816 | static int __hci_init(struct hci_dev *hdev) |
817 | { | |
818 | int err; | |
819 | ||
4ebeee2d | 820 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL); |
2177bab5 JH |
821 | if (err < 0) |
822 | return err; | |
823 | ||
f640ee98 MH |
824 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
825 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 826 | |
4ebeee2d | 827 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL); |
0af801b9 JH |
828 | if (err < 0) |
829 | return err; | |
830 | ||
ca8bee5d | 831 | /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode |
2177bab5 | 832 | * BR/EDR/LE type controllers. AMP controllers only need the |
0af801b9 | 833 | * first two stages of init. |
2177bab5 | 834 | */ |
ca8bee5d | 835 | if (hdev->dev_type != HCI_PRIMARY) |
2177bab5 JH |
836 | return 0; |
837 | ||
4ebeee2d | 838 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL); |
5d4e7e8d JH |
839 | if (err < 0) |
840 | return err; | |
841 | ||
4ebeee2d | 842 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL); |
baf27f6e MH |
843 | if (err < 0) |
844 | return err; | |
845 | ||
ec6cef9c MH |
846 | /* This function is only called when the controller is actually in |
847 | * configured state. When the controller is marked as unconfigured, | |
848 | * this initialization procedure is not run. | |
849 | * | |
850 | * It means that it is possible that a controller runs through its | |
851 | * setup phase and then discovers missing settings. If that is the | |
852 | * case, then this function will not be called. It then will only | |
853 | * be called during the config phase. | |
854 | * | |
855 | * So only when in setup phase or config phase, create the debugfs | |
856 | * entries and register the SMP channels. | |
baf27f6e | 857 | */ |
d7a5a11d MH |
858 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
859 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
860 | return 0; |
861 | ||
60c5f5fb MH |
862 | hci_debugfs_create_common(hdev); |
863 | ||
71c3b60e | 864 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 865 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 866 | |
162a3bac | 867 | if (lmp_le_capable(hdev)) |
60c5f5fb | 868 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 869 | |
baf27f6e | 870 | return 0; |
2177bab5 JH |
871 | } |
872 | ||
a1d01db1 | 873 | static int hci_init0_req(struct hci_request *req, unsigned long opt) |
0ebca7d6 MH |
874 | { |
875 | struct hci_dev *hdev = req->hdev; | |
876 | ||
877 | BT_DBG("%s %ld", hdev->name, opt); | |
878 | ||
879 | /* Reset */ | |
880 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
881 | hci_reset_req(req, 0); | |
882 | ||
883 | /* Read Local Version */ | |
884 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
885 | ||
886 | /* Read BD Address */ | |
887 | if (hdev->set_bdaddr) | |
888 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
a1d01db1 JH |
889 | |
890 | return 0; | |
0ebca7d6 MH |
891 | } |
892 | ||
893 | static int __hci_unconf_init(struct hci_dev *hdev) | |
894 | { | |
895 | int err; | |
896 | ||
cc78b44b MH |
897 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
898 | return 0; | |
899 | ||
4ebeee2d | 900 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL); |
0ebca7d6 MH |
901 | if (err < 0) |
902 | return err; | |
903 | ||
f640ee98 MH |
904 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
905 | hci_debugfs_create_basic(hdev); | |
906 | ||
0ebca7d6 MH |
907 | return 0; |
908 | } | |
909 | ||
a1d01db1 | 910 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
911 | { |
912 | __u8 scan = opt; | |
913 | ||
42c6b129 | 914 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
915 | |
916 | /* Inquiry and Page scans */ | |
42c6b129 | 917 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 918 | return 0; |
1da177e4 LT |
919 | } |
920 | ||
a1d01db1 | 921 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
922 | { |
923 | __u8 auth = opt; | |
924 | ||
42c6b129 | 925 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
926 | |
927 | /* Authentication */ | |
42c6b129 | 928 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 929 | return 0; |
1da177e4 LT |
930 | } |
931 | ||
a1d01db1 | 932 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
933 | { |
934 | __u8 encrypt = opt; | |
935 | ||
42c6b129 | 936 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 937 | |
e4e8e37c | 938 | /* Encryption */ |
42c6b129 | 939 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 940 | return 0; |
1da177e4 LT |
941 | } |
942 | ||
a1d01db1 | 943 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
944 | { |
945 | __le16 policy = cpu_to_le16(opt); | |
946 | ||
42c6b129 | 947 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
948 | |
949 | /* Default link policy */ | |
42c6b129 | 950 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 951 | return 0; |
e4e8e37c MH |
952 | } |
953 | ||
8e87d142 | 954 | /* Get HCI device by index. |
1da177e4 LT |
955 | * Device is held on return. */ |
956 | struct hci_dev *hci_dev_get(int index) | |
957 | { | |
8035ded4 | 958 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
959 | |
960 | BT_DBG("%d", index); | |
961 | ||
962 | if (index < 0) | |
963 | return NULL; | |
964 | ||
965 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 966 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
967 | if (d->id == index) { |
968 | hdev = hci_dev_hold(d); | |
969 | break; | |
970 | } | |
971 | } | |
972 | read_unlock(&hci_dev_list_lock); | |
973 | return hdev; | |
974 | } | |
1da177e4 LT |
975 | |
976 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 977 | |
30dc78e1 JH |
978 | bool hci_discovery_active(struct hci_dev *hdev) |
979 | { | |
980 | struct discovery_state *discov = &hdev->discovery; | |
981 | ||
6fbe195d | 982 | switch (discov->state) { |
343f935b | 983 | case DISCOVERY_FINDING: |
6fbe195d | 984 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
985 | return true; |
986 | ||
6fbe195d AG |
987 | default: |
988 | return false; | |
989 | } | |
30dc78e1 JH |
990 | } |
991 | ||
ff9ef578 JH |
992 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
993 | { | |
bb3e0a33 JH |
994 | int old_state = hdev->discovery.state; |
995 | ||
ff9ef578 JH |
996 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
997 | ||
bb3e0a33 | 998 | if (old_state == state) |
ff9ef578 JH |
999 | return; |
1000 | ||
bb3e0a33 JH |
1001 | hdev->discovery.state = state; |
1002 | ||
ff9ef578 JH |
1003 | switch (state) { |
1004 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1005 | hci_update_background_scan(hdev); |
1006 | ||
bb3e0a33 | 1007 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1008 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1009 | break; |
1010 | case DISCOVERY_STARTING: | |
1011 | break; | |
343f935b | 1012 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1013 | mgmt_discovering(hdev, 1); |
1014 | break; | |
30dc78e1 JH |
1015 | case DISCOVERY_RESOLVING: |
1016 | break; | |
ff9ef578 JH |
1017 | case DISCOVERY_STOPPING: |
1018 | break; | |
1019 | } | |
ff9ef578 JH |
1020 | } |
1021 | ||
1f9b9a5d | 1022 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1023 | { |
30883512 | 1024 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1025 | struct inquiry_entry *p, *n; |
1da177e4 | 1026 | |
561aafbc JH |
1027 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1028 | list_del(&p->all); | |
b57c1a56 | 1029 | kfree(p); |
1da177e4 | 1030 | } |
561aafbc JH |
1031 | |
1032 | INIT_LIST_HEAD(&cache->unknown); | |
1033 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1034 | } |
1035 | ||
a8c5fb1a GP |
1036 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1037 | bdaddr_t *bdaddr) | |
1da177e4 | 1038 | { |
30883512 | 1039 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1040 | struct inquiry_entry *e; |
1041 | ||
6ed93dc6 | 1042 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1043 | |
561aafbc JH |
1044 | list_for_each_entry(e, &cache->all, all) { |
1045 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1046 | return e; | |
1047 | } | |
1048 | ||
1049 | return NULL; | |
1050 | } | |
1051 | ||
1052 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1053 | bdaddr_t *bdaddr) |
561aafbc | 1054 | { |
30883512 | 1055 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1056 | struct inquiry_entry *e; |
1057 | ||
6ed93dc6 | 1058 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1059 | |
1060 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1061 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1062 | return e; |
1063 | } | |
1064 | ||
1065 | return NULL; | |
1da177e4 LT |
1066 | } |
1067 | ||
30dc78e1 | 1068 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1069 | bdaddr_t *bdaddr, |
1070 | int state) | |
30dc78e1 JH |
1071 | { |
1072 | struct discovery_state *cache = &hdev->discovery; | |
1073 | struct inquiry_entry *e; | |
1074 | ||
6ed93dc6 | 1075 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1076 | |
1077 | list_for_each_entry(e, &cache->resolve, list) { | |
1078 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1079 | return e; | |
1080 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1081 | return e; | |
1082 | } | |
1083 | ||
1084 | return NULL; | |
1085 | } | |
1086 | ||
a3d4e20a | 1087 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1088 | struct inquiry_entry *ie) |
a3d4e20a JH |
1089 | { |
1090 | struct discovery_state *cache = &hdev->discovery; | |
1091 | struct list_head *pos = &cache->resolve; | |
1092 | struct inquiry_entry *p; | |
1093 | ||
1094 | list_del(&ie->list); | |
1095 | ||
1096 | list_for_each_entry(p, &cache->resolve, list) { | |
1097 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1098 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1099 | break; |
1100 | pos = &p->list; | |
1101 | } | |
1102 | ||
1103 | list_add(&ie->list, pos); | |
1104 | } | |
1105 | ||
af58925c MH |
1106 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1107 | bool name_known) | |
1da177e4 | 1108 | { |
30883512 | 1109 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1110 | struct inquiry_entry *ie; |
af58925c | 1111 | u32 flags = 0; |
1da177e4 | 1112 | |
6ed93dc6 | 1113 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1114 | |
6928a924 | 1115 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1116 | |
af58925c MH |
1117 | if (!data->ssp_mode) |
1118 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1119 | |
70f23020 | 1120 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1121 | if (ie) { |
af58925c MH |
1122 | if (!ie->data.ssp_mode) |
1123 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1124 | |
a3d4e20a | 1125 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1126 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1127 | ie->data.rssi = data->rssi; |
1128 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1129 | } | |
1130 | ||
561aafbc | 1131 | goto update; |
a3d4e20a | 1132 | } |
561aafbc JH |
1133 | |
1134 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1135 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1136 | if (!ie) { |
1137 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1138 | goto done; | |
1139 | } | |
561aafbc JH |
1140 | |
1141 | list_add(&ie->all, &cache->all); | |
1142 | ||
1143 | if (name_known) { | |
1144 | ie->name_state = NAME_KNOWN; | |
1145 | } else { | |
1146 | ie->name_state = NAME_NOT_KNOWN; | |
1147 | list_add(&ie->list, &cache->unknown); | |
1148 | } | |
70f23020 | 1149 | |
561aafbc JH |
1150 | update: |
1151 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1152 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1153 | ie->name_state = NAME_KNOWN; |
1154 | list_del(&ie->list); | |
1da177e4 LT |
1155 | } |
1156 | ||
70f23020 AE |
1157 | memcpy(&ie->data, data, sizeof(*data)); |
1158 | ie->timestamp = jiffies; | |
1da177e4 | 1159 | cache->timestamp = jiffies; |
3175405b JH |
1160 | |
1161 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1162 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1163 | |
af58925c MH |
1164 | done: |
1165 | return flags; | |
1da177e4 LT |
1166 | } |
1167 | ||
1168 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1169 | { | |
30883512 | 1170 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1171 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1172 | struct inquiry_entry *e; | |
1173 | int copied = 0; | |
1174 | ||
561aafbc | 1175 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1176 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1177 | |
1178 | if (copied >= num) | |
1179 | break; | |
1180 | ||
1da177e4 LT |
1181 | bacpy(&info->bdaddr, &data->bdaddr); |
1182 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1183 | info->pscan_period_mode = data->pscan_period_mode; | |
1184 | info->pscan_mode = data->pscan_mode; | |
1185 | memcpy(info->dev_class, data->dev_class, 3); | |
1186 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1187 | |
1da177e4 | 1188 | info++; |
b57c1a56 | 1189 | copied++; |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | BT_DBG("cache %p, copied %d", cache, copied); | |
1193 | return copied; | |
1194 | } | |
1195 | ||
a1d01db1 | 1196 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1197 | { |
1198 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1199 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1200 | struct hci_cp_inquiry cp; |
1201 | ||
1202 | BT_DBG("%s", hdev->name); | |
1203 | ||
1204 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 1205 | return 0; |
1da177e4 LT |
1206 | |
1207 | /* Start Inquiry */ | |
1208 | memcpy(&cp.lap, &ir->lap, 3); | |
1209 | cp.length = ir->length; | |
1210 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1211 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
1212 | |
1213 | return 0; | |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | int hci_inquiry(void __user *arg) | |
1217 | { | |
1218 | __u8 __user *ptr = arg; | |
1219 | struct hci_inquiry_req ir; | |
1220 | struct hci_dev *hdev; | |
1221 | int err = 0, do_inquiry = 0, max_rsp; | |
1222 | long timeo; | |
1223 | __u8 *buf; | |
1224 | ||
1225 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1226 | return -EFAULT; | |
1227 | ||
5a08ecce AE |
1228 | hdev = hci_dev_get(ir.dev_id); |
1229 | if (!hdev) | |
1da177e4 LT |
1230 | return -ENODEV; |
1231 | ||
d7a5a11d | 1232 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1233 | err = -EBUSY; |
1234 | goto done; | |
1235 | } | |
1236 | ||
d7a5a11d | 1237 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1238 | err = -EOPNOTSUPP; |
1239 | goto done; | |
1240 | } | |
1241 | ||
ca8bee5d | 1242 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1243 | err = -EOPNOTSUPP; |
1244 | goto done; | |
1245 | } | |
1246 | ||
d7a5a11d | 1247 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1248 | err = -EOPNOTSUPP; |
1249 | goto done; | |
1250 | } | |
1251 | ||
09fd0de5 | 1252 | hci_dev_lock(hdev); |
8e87d142 | 1253 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1254 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1255 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1256 | do_inquiry = 1; |
1257 | } | |
09fd0de5 | 1258 | hci_dev_unlock(hdev); |
1da177e4 | 1259 | |
04837f64 | 1260 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1261 | |
1262 | if (do_inquiry) { | |
01178cd4 | 1263 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 1264 | timeo, NULL); |
70f23020 AE |
1265 | if (err < 0) |
1266 | goto done; | |
3e13fa1e AG |
1267 | |
1268 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1269 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1270 | */ | |
74316201 | 1271 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1272 | TASK_INTERRUPTIBLE)) |
1273 | return -EINTR; | |
70f23020 | 1274 | } |
1da177e4 | 1275 | |
8fc9ced3 GP |
1276 | /* for unlimited number of responses we will use buffer with |
1277 | * 255 entries | |
1278 | */ | |
1da177e4 LT |
1279 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1280 | ||
1281 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1282 | * copy it to the user space. | |
1283 | */ | |
6da2ec56 | 1284 | buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL); |
70f23020 | 1285 | if (!buf) { |
1da177e4 LT |
1286 | err = -ENOMEM; |
1287 | goto done; | |
1288 | } | |
1289 | ||
09fd0de5 | 1290 | hci_dev_lock(hdev); |
1da177e4 | 1291 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1292 | hci_dev_unlock(hdev); |
1da177e4 LT |
1293 | |
1294 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1295 | ||
1296 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1297 | ptr += sizeof(ir); | |
1298 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1299 | ir.num_rsp)) |
1da177e4 | 1300 | err = -EFAULT; |
8e87d142 | 1301 | } else |
1da177e4 LT |
1302 | err = -EFAULT; |
1303 | ||
1304 | kfree(buf); | |
1305 | ||
1306 | done: | |
1307 | hci_dev_put(hdev); | |
1308 | return err; | |
1309 | } | |
1310 | ||
cbed0ca1 | 1311 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1312 | { |
1da177e4 LT |
1313 | int ret = 0; |
1314 | ||
1da177e4 LT |
1315 | BT_DBG("%s %p", hdev->name, hdev); |
1316 | ||
b504430c | 1317 | hci_req_sync_lock(hdev); |
1da177e4 | 1318 | |
d7a5a11d | 1319 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1320 | ret = -ENODEV; |
1321 | goto done; | |
1322 | } | |
1323 | ||
d7a5a11d MH |
1324 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1325 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1326 | /* Check for rfkill but allow the HCI setup stage to |
1327 | * proceed (which in itself doesn't cause any RF activity). | |
1328 | */ | |
d7a5a11d | 1329 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1330 | ret = -ERFKILL; |
1331 | goto done; | |
1332 | } | |
1333 | ||
1334 | /* Check for valid public address or a configured static | |
1335 | * random adddress, but let the HCI setup proceed to | |
1336 | * be able to determine if there is a public address | |
1337 | * or not. | |
1338 | * | |
c6beca0e MH |
1339 | * In case of user channel usage, it is not important |
1340 | * if a public address or static random address is | |
1341 | * available. | |
1342 | * | |
a5c8f270 MH |
1343 | * This check is only valid for BR/EDR controllers |
1344 | * since AMP controllers do not have an address. | |
1345 | */ | |
d7a5a11d | 1346 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
ca8bee5d | 1347 | hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
1348 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1349 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1350 | ret = -EADDRNOTAVAIL; | |
1351 | goto done; | |
1352 | } | |
611b30f7 MH |
1353 | } |
1354 | ||
1da177e4 LT |
1355 | if (test_bit(HCI_UP, &hdev->flags)) { |
1356 | ret = -EALREADY; | |
1357 | goto done; | |
1358 | } | |
1359 | ||
1da177e4 LT |
1360 | if (hdev->open(hdev)) { |
1361 | ret = -EIO; | |
1362 | goto done; | |
1363 | } | |
1364 | ||
e9ca8bf1 | 1365 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1366 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1367 | |
f41c70c4 MH |
1368 | atomic_set(&hdev->cmd_cnt, 1); |
1369 | set_bit(HCI_INIT, &hdev->flags); | |
1370 | ||
d7a5a11d | 1371 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
e131d74a MH |
1372 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1373 | ||
af202f84 MH |
1374 | if (hdev->setup) |
1375 | ret = hdev->setup(hdev); | |
f41c70c4 | 1376 | |
af202f84 MH |
1377 | /* The transport driver can set these quirks before |
1378 | * creating the HCI device or in its setup callback. | |
1379 | * | |
1380 | * In case any of them is set, the controller has to | |
1381 | * start up as unconfigured. | |
1382 | */ | |
eb1904f4 MH |
1383 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1384 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1385 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1386 | |
0ebca7d6 MH |
1387 | /* For an unconfigured controller it is required to |
1388 | * read at least the version information provided by | |
1389 | * the Read Local Version Information command. | |
1390 | * | |
1391 | * If the set_bdaddr driver callback is provided, then | |
1392 | * also the original Bluetooth public device address | |
1393 | * will be read using the Read BD Address command. | |
1394 | */ | |
d7a5a11d | 1395 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1396 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1397 | } |
1398 | ||
d7a5a11d | 1399 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1400 | /* If public address change is configured, ensure that |
1401 | * the address gets programmed. If the driver does not | |
1402 | * support changing the public address, fail the power | |
1403 | * on procedure. | |
1404 | */ | |
1405 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1406 | hdev->set_bdaddr) | |
24c457e2 MH |
1407 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1408 | else | |
1409 | ret = -EADDRNOTAVAIL; | |
1410 | } | |
1411 | ||
f41c70c4 | 1412 | if (!ret) { |
d7a5a11d | 1413 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1414 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1415 | ret = __hci_init(hdev); |
98a63aaf MH |
1416 | if (!ret && hdev->post_init) |
1417 | ret = hdev->post_init(hdev); | |
1418 | } | |
1da177e4 LT |
1419 | } |
1420 | ||
7e995b9e MH |
1421 | /* If the HCI Reset command is clearing all diagnostic settings, |
1422 | * then they need to be reprogrammed after the init procedure | |
1423 | * completed. | |
1424 | */ | |
1425 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
b56c7b25 | 1426 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
7e995b9e MH |
1427 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) |
1428 | ret = hdev->set_diag(hdev, true); | |
1429 | ||
f41c70c4 MH |
1430 | clear_bit(HCI_INIT, &hdev->flags); |
1431 | ||
1da177e4 LT |
1432 | if (!ret) { |
1433 | hci_dev_hold(hdev); | |
a1536da2 | 1434 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 | 1435 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1436 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
6d5d2ee6 | 1437 | hci_leds_update_powered(hdev, true); |
d7a5a11d MH |
1438 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1439 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1440 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1441 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
2ff13894 | 1442 | hci_dev_test_flag(hdev, HCI_MGMT) && |
ca8bee5d | 1443 | hdev->dev_type == HCI_PRIMARY) { |
2ff13894 JH |
1444 | ret = __hci_req_hci_power_on(hdev); |
1445 | mgmt_power_on(hdev, ret); | |
56e5cb86 | 1446 | } |
8e87d142 | 1447 | } else { |
1da177e4 | 1448 | /* Init failed, cleanup */ |
3eff45ea | 1449 | flush_work(&hdev->tx_work); |
c347b765 | 1450 | flush_work(&hdev->cmd_work); |
b78752cc | 1451 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1452 | |
1453 | skb_queue_purge(&hdev->cmd_q); | |
1454 | skb_queue_purge(&hdev->rx_q); | |
1455 | ||
1456 | if (hdev->flush) | |
1457 | hdev->flush(hdev); | |
1458 | ||
1459 | if (hdev->sent_cmd) { | |
1460 | kfree_skb(hdev->sent_cmd); | |
1461 | hdev->sent_cmd = NULL; | |
1462 | } | |
1463 | ||
e9ca8bf1 | 1464 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1465 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1466 | |
1da177e4 | 1467 | hdev->close(hdev); |
fee746b0 | 1468 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1469 | } |
1470 | ||
1471 | done: | |
b504430c | 1472 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1473 | return ret; |
1474 | } | |
1475 | ||
cbed0ca1 JH |
1476 | /* ---- HCI ioctl helpers ---- */ |
1477 | ||
1478 | int hci_dev_open(__u16 dev) | |
1479 | { | |
1480 | struct hci_dev *hdev; | |
1481 | int err; | |
1482 | ||
1483 | hdev = hci_dev_get(dev); | |
1484 | if (!hdev) | |
1485 | return -ENODEV; | |
1486 | ||
4a964404 | 1487 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1488 | * up as user channel. Trying to bring them up as normal devices |
1489 | * will result into a failure. Only user channel operation is | |
1490 | * possible. | |
1491 | * | |
1492 | * When this function is called for a user channel, the flag | |
1493 | * HCI_USER_CHANNEL will be set first before attempting to | |
1494 | * open the device. | |
1495 | */ | |
d7a5a11d MH |
1496 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1497 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1498 | err = -EOPNOTSUPP; |
1499 | goto done; | |
1500 | } | |
1501 | ||
e1d08f40 JH |
1502 | /* We need to ensure that no other power on/off work is pending |
1503 | * before proceeding to call hci_dev_do_open. This is | |
1504 | * particularly important if the setup procedure has not yet | |
1505 | * completed. | |
1506 | */ | |
a69d8927 | 1507 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1508 | cancel_delayed_work(&hdev->power_off); |
1509 | ||
a5c8f270 MH |
1510 | /* After this call it is guaranteed that the setup procedure |
1511 | * has finished. This means that error conditions like RFKILL | |
1512 | * or no valid public or static random address apply. | |
1513 | */ | |
e1d08f40 JH |
1514 | flush_workqueue(hdev->req_workqueue); |
1515 | ||
12aa4f0a | 1516 | /* For controllers not using the management interface and that |
b6ae8457 | 1517 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1518 | * so that pairing works for them. Once the management interface |
1519 | * is in use this bit will be cleared again and userspace has | |
1520 | * to explicitly enable it. | |
1521 | */ | |
d7a5a11d MH |
1522 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1523 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1524 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1525 | |
cbed0ca1 JH |
1526 | err = hci_dev_do_open(hdev); |
1527 | ||
fee746b0 | 1528 | done: |
cbed0ca1 | 1529 | hci_dev_put(hdev); |
cbed0ca1 JH |
1530 | return err; |
1531 | } | |
1532 | ||
d7347f3c JH |
1533 | /* This function requires the caller holds hdev->lock */ |
1534 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1535 | { | |
1536 | struct hci_conn_params *p; | |
1537 | ||
f161dd41 JH |
1538 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1539 | if (p->conn) { | |
1540 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1541 | hci_conn_put(p->conn); |
f161dd41 JH |
1542 | p->conn = NULL; |
1543 | } | |
d7347f3c | 1544 | list_del_init(&p->action); |
f161dd41 | 1545 | } |
d7347f3c JH |
1546 | |
1547 | BT_DBG("All LE pending actions cleared"); | |
1548 | } | |
1549 | ||
6b3cc1db | 1550 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1551 | { |
acc649c6 MH |
1552 | bool auto_off; |
1553 | ||
1da177e4 LT |
1554 | BT_DBG("%s %p", hdev->name, hdev); |
1555 | ||
d24d8144 | 1556 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1557 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1558 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1559 | /* Execute vendor specific shutdown routine */ |
1560 | if (hdev->shutdown) | |
1561 | hdev->shutdown(hdev); | |
1562 | } | |
1563 | ||
78c04c0b VCG |
1564 | cancel_delayed_work(&hdev->power_off); |
1565 | ||
7df0f73e | 1566 | hci_request_cancel_all(hdev); |
b504430c | 1567 | hci_req_sync_lock(hdev); |
1da177e4 LT |
1568 | |
1569 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1570 | cancel_delayed_work_sync(&hdev->cmd_timer); |
b504430c | 1571 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1572 | return 0; |
1573 | } | |
1574 | ||
6d5d2ee6 HK |
1575 | hci_leds_update_powered(hdev, false); |
1576 | ||
3eff45ea GP |
1577 | /* Flush RX and TX works */ |
1578 | flush_work(&hdev->tx_work); | |
b78752cc | 1579 | flush_work(&hdev->rx_work); |
1da177e4 | 1580 | |
16ab91ab | 1581 | if (hdev->discov_timeout > 0) { |
16ab91ab | 1582 | hdev->discov_timeout = 0; |
a358dc11 MH |
1583 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1584 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1585 | } |
1586 | ||
a69d8927 | 1587 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1588 | cancel_delayed_work(&hdev->service_cache); |
1589 | ||
d7a5a11d | 1590 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1591 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1592 | |
76727c02 JH |
1593 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1594 | * ensuring the workqueue is empty up front. | |
1595 | */ | |
1596 | drain_workqueue(hdev->workqueue); | |
1597 | ||
09fd0de5 | 1598 | hci_dev_lock(hdev); |
1aeb9c65 | 1599 | |
8f502f84 JH |
1600 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1601 | ||
acc649c6 MH |
1602 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1603 | ||
ca8bee5d | 1604 | if (!auto_off && hdev->dev_type == HCI_PRIMARY && |
baab7932 | 1605 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
2ff13894 JH |
1606 | hci_dev_test_flag(hdev, HCI_MGMT)) |
1607 | __mgmt_power_off(hdev); | |
1aeb9c65 | 1608 | |
1f9b9a5d | 1609 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1610 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1611 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1612 | hci_dev_unlock(hdev); |
1da177e4 | 1613 | |
64dae967 MH |
1614 | smp_unregister(hdev); |
1615 | ||
05fcd4c4 | 1616 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1617 | |
1618 | if (hdev->flush) | |
1619 | hdev->flush(hdev); | |
1620 | ||
1621 | /* Reset device */ | |
1622 | skb_queue_purge(&hdev->cmd_q); | |
1623 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1624 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1625 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1626 | set_bit(HCI_INIT, &hdev->flags); |
4ebeee2d | 1627 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL); |
1da177e4 LT |
1628 | clear_bit(HCI_INIT, &hdev->flags); |
1629 | } | |
1630 | ||
c347b765 GP |
1631 | /* flush cmd work */ |
1632 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1633 | |
1634 | /* Drop queues */ | |
1635 | skb_queue_purge(&hdev->rx_q); | |
1636 | skb_queue_purge(&hdev->cmd_q); | |
1637 | skb_queue_purge(&hdev->raw_q); | |
1638 | ||
1639 | /* Drop last sent command */ | |
1640 | if (hdev->sent_cmd) { | |
65cc2b49 | 1641 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1642 | kfree_skb(hdev->sent_cmd); |
1643 | hdev->sent_cmd = NULL; | |
1644 | } | |
1645 | ||
e9ca8bf1 | 1646 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1647 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1648 | |
1da177e4 LT |
1649 | /* After this point our queues are empty |
1650 | * and no tasks are scheduled. */ | |
1651 | hdev->close(hdev); | |
1652 | ||
35b973c9 | 1653 | /* Clear flags */ |
fee746b0 | 1654 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1655 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1656 | |
ced5c338 | 1657 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1658 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1659 | |
e59fda8d | 1660 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1661 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1662 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1663 | |
b504430c | 1664 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1665 | |
1666 | hci_dev_put(hdev); | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | int hci_dev_close(__u16 dev) | |
1671 | { | |
1672 | struct hci_dev *hdev; | |
1673 | int err; | |
1674 | ||
70f23020 AE |
1675 | hdev = hci_dev_get(dev); |
1676 | if (!hdev) | |
1da177e4 | 1677 | return -ENODEV; |
8ee56540 | 1678 | |
d7a5a11d | 1679 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1680 | err = -EBUSY; |
1681 | goto done; | |
1682 | } | |
1683 | ||
a69d8927 | 1684 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1685 | cancel_delayed_work(&hdev->power_off); |
1686 | ||
1da177e4 | 1687 | err = hci_dev_do_close(hdev); |
8ee56540 | 1688 | |
0736cfa8 | 1689 | done: |
1da177e4 LT |
1690 | hci_dev_put(hdev); |
1691 | return err; | |
1692 | } | |
1693 | ||
5c912495 | 1694 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1695 | { |
5c912495 | 1696 | int ret; |
1da177e4 | 1697 | |
5c912495 | 1698 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 1699 | |
b504430c | 1700 | hci_req_sync_lock(hdev); |
1da177e4 | 1701 | |
1da177e4 LT |
1702 | /* Drop queues */ |
1703 | skb_queue_purge(&hdev->rx_q); | |
1704 | skb_queue_purge(&hdev->cmd_q); | |
1705 | ||
76727c02 JH |
1706 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1707 | * ensuring the workqueue is empty up front. | |
1708 | */ | |
1709 | drain_workqueue(hdev->workqueue); | |
1710 | ||
09fd0de5 | 1711 | hci_dev_lock(hdev); |
1f9b9a5d | 1712 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1713 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1714 | hci_dev_unlock(hdev); |
1da177e4 LT |
1715 | |
1716 | if (hdev->flush) | |
1717 | hdev->flush(hdev); | |
1718 | ||
8e87d142 | 1719 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1720 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1721 | |
4ebeee2d | 1722 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL); |
1da177e4 | 1723 | |
b504430c | 1724 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1725 | return ret; |
1726 | } | |
1727 | ||
5c912495 MH |
1728 | int hci_dev_reset(__u16 dev) |
1729 | { | |
1730 | struct hci_dev *hdev; | |
1731 | int err; | |
1732 | ||
1733 | hdev = hci_dev_get(dev); | |
1734 | if (!hdev) | |
1735 | return -ENODEV; | |
1736 | ||
1737 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1738 | err = -ENETDOWN; | |
1739 | goto done; | |
1740 | } | |
1741 | ||
d7a5a11d | 1742 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1743 | err = -EBUSY; |
1744 | goto done; | |
1745 | } | |
1746 | ||
d7a5a11d | 1747 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1748 | err = -EOPNOTSUPP; |
1749 | goto done; | |
1750 | } | |
1751 | ||
1752 | err = hci_dev_do_reset(hdev); | |
1753 | ||
1754 | done: | |
1755 | hci_dev_put(hdev); | |
1756 | return err; | |
1757 | } | |
1758 | ||
1da177e4 LT |
1759 | int hci_dev_reset_stat(__u16 dev) |
1760 | { | |
1761 | struct hci_dev *hdev; | |
1762 | int ret = 0; | |
1763 | ||
70f23020 AE |
1764 | hdev = hci_dev_get(dev); |
1765 | if (!hdev) | |
1da177e4 LT |
1766 | return -ENODEV; |
1767 | ||
d7a5a11d | 1768 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1769 | ret = -EBUSY; |
1770 | goto done; | |
1771 | } | |
1772 | ||
d7a5a11d | 1773 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1774 | ret = -EOPNOTSUPP; |
1775 | goto done; | |
1776 | } | |
1777 | ||
1da177e4 LT |
1778 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1779 | ||
0736cfa8 | 1780 | done: |
1da177e4 | 1781 | hci_dev_put(hdev); |
1da177e4 LT |
1782 | return ret; |
1783 | } | |
1784 | ||
123abc08 JH |
1785 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1786 | { | |
bc6d2d04 | 1787 | bool conn_changed, discov_changed; |
123abc08 JH |
1788 | |
1789 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1790 | ||
1791 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1792 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1793 | HCI_CONNECTABLE); | |
123abc08 | 1794 | else |
a69d8927 MH |
1795 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1796 | HCI_CONNECTABLE); | |
123abc08 | 1797 | |
bc6d2d04 | 1798 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1799 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1800 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1801 | } else { |
a358dc11 | 1802 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1803 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1804 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1805 | } |
1806 | ||
d7a5a11d | 1807 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1808 | return; |
1809 | ||
bc6d2d04 JH |
1810 | if (conn_changed || discov_changed) { |
1811 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1812 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1813 | |
d7a5a11d | 1814 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
cab054ab | 1815 | hci_req_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 1816 | |
123abc08 | 1817 | mgmt_new_settings(hdev); |
bc6d2d04 | 1818 | } |
123abc08 JH |
1819 | } |
1820 | ||
1da177e4 LT |
1821 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1822 | { | |
1823 | struct hci_dev *hdev; | |
1824 | struct hci_dev_req dr; | |
1825 | int err = 0; | |
1826 | ||
1827 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1828 | return -EFAULT; | |
1829 | ||
70f23020 AE |
1830 | hdev = hci_dev_get(dr.dev_id); |
1831 | if (!hdev) | |
1da177e4 LT |
1832 | return -ENODEV; |
1833 | ||
d7a5a11d | 1834 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1835 | err = -EBUSY; |
1836 | goto done; | |
1837 | } | |
1838 | ||
d7a5a11d | 1839 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1840 | err = -EOPNOTSUPP; |
1841 | goto done; | |
1842 | } | |
1843 | ||
ca8bee5d | 1844 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1845 | err = -EOPNOTSUPP; |
1846 | goto done; | |
1847 | } | |
1848 | ||
d7a5a11d | 1849 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1850 | err = -EOPNOTSUPP; |
1851 | goto done; | |
1852 | } | |
1853 | ||
1da177e4 LT |
1854 | switch (cmd) { |
1855 | case HCISETAUTH: | |
01178cd4 | 1856 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1857 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1858 | break; |
1859 | ||
1860 | case HCISETENCRYPT: | |
1861 | if (!lmp_encrypt_capable(hdev)) { | |
1862 | err = -EOPNOTSUPP; | |
1863 | break; | |
1864 | } | |
1865 | ||
1866 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1867 | /* Auth must be enabled first */ | |
01178cd4 | 1868 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1869 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1870 | if (err) |
1871 | break; | |
1872 | } | |
1873 | ||
01178cd4 | 1874 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 1875 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1876 | break; |
1877 | ||
1878 | case HCISETSCAN: | |
01178cd4 | 1879 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 1880 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 1881 | |
bc6d2d04 JH |
1882 | /* Ensure that the connectable and discoverable states |
1883 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1884 | */ |
123abc08 JH |
1885 | if (!err) |
1886 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1887 | break; |
1888 | ||
1da177e4 | 1889 | case HCISETLINKPOL: |
01178cd4 | 1890 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 1891 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1892 | break; |
1893 | ||
1894 | case HCISETLINKMODE: | |
e4e8e37c MH |
1895 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1896 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1897 | break; | |
1898 | ||
1899 | case HCISETPTYPE: | |
1900 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1901 | break; |
1902 | ||
1903 | case HCISETACLMTU: | |
e4e8e37c MH |
1904 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1905 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1906 | break; |
1907 | ||
1908 | case HCISETSCOMTU: | |
e4e8e37c MH |
1909 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1910 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1911 | break; |
1912 | ||
1913 | default: | |
1914 | err = -EINVAL; | |
1915 | break; | |
1916 | } | |
e4e8e37c | 1917 | |
0736cfa8 | 1918 | done: |
1da177e4 LT |
1919 | hci_dev_put(hdev); |
1920 | return err; | |
1921 | } | |
1922 | ||
1923 | int hci_get_dev_list(void __user *arg) | |
1924 | { | |
8035ded4 | 1925 | struct hci_dev *hdev; |
1da177e4 LT |
1926 | struct hci_dev_list_req *dl; |
1927 | struct hci_dev_req *dr; | |
1da177e4 LT |
1928 | int n = 0, size, err; |
1929 | __u16 dev_num; | |
1930 | ||
1931 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1932 | return -EFAULT; | |
1933 | ||
1934 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1935 | return -EINVAL; | |
1936 | ||
1937 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1938 | ||
70f23020 AE |
1939 | dl = kzalloc(size, GFP_KERNEL); |
1940 | if (!dl) | |
1da177e4 LT |
1941 | return -ENOMEM; |
1942 | ||
1943 | dr = dl->dev_req; | |
1944 | ||
f20d09d5 | 1945 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1946 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1947 | unsigned long flags = hdev->flags; |
c542a06c | 1948 | |
2e84d8db MH |
1949 | /* When the auto-off is configured it means the transport |
1950 | * is running, but in that case still indicate that the | |
1951 | * device is actually down. | |
1952 | */ | |
d7a5a11d | 1953 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1954 | flags &= ~BIT(HCI_UP); |
c542a06c | 1955 | |
1da177e4 | 1956 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1957 | (dr + n)->dev_opt = flags; |
c542a06c | 1958 | |
1da177e4 LT |
1959 | if (++n >= dev_num) |
1960 | break; | |
1961 | } | |
f20d09d5 | 1962 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1963 | |
1964 | dl->dev_num = n; | |
1965 | size = sizeof(*dl) + n * sizeof(*dr); | |
1966 | ||
1967 | err = copy_to_user(arg, dl, size); | |
1968 | kfree(dl); | |
1969 | ||
1970 | return err ? -EFAULT : 0; | |
1971 | } | |
1972 | ||
1973 | int hci_get_dev_info(void __user *arg) | |
1974 | { | |
1975 | struct hci_dev *hdev; | |
1976 | struct hci_dev_info di; | |
2e84d8db | 1977 | unsigned long flags; |
1da177e4 LT |
1978 | int err = 0; |
1979 | ||
1980 | if (copy_from_user(&di, arg, sizeof(di))) | |
1981 | return -EFAULT; | |
1982 | ||
70f23020 AE |
1983 | hdev = hci_dev_get(di.dev_id); |
1984 | if (!hdev) | |
1da177e4 LT |
1985 | return -ENODEV; |
1986 | ||
2e84d8db MH |
1987 | /* When the auto-off is configured it means the transport |
1988 | * is running, but in that case still indicate that the | |
1989 | * device is actually down. | |
1990 | */ | |
d7a5a11d | 1991 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1992 | flags = hdev->flags & ~BIT(HCI_UP); |
1993 | else | |
1994 | flags = hdev->flags; | |
c542a06c | 1995 | |
1da177e4 LT |
1996 | strcpy(di.name, hdev->name); |
1997 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1998 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 1999 | di.flags = flags; |
1da177e4 | 2000 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2001 | if (lmp_bredr_capable(hdev)) { |
2002 | di.acl_mtu = hdev->acl_mtu; | |
2003 | di.acl_pkts = hdev->acl_pkts; | |
2004 | di.sco_mtu = hdev->sco_mtu; | |
2005 | di.sco_pkts = hdev->sco_pkts; | |
2006 | } else { | |
2007 | di.acl_mtu = hdev->le_mtu; | |
2008 | di.acl_pkts = hdev->le_pkts; | |
2009 | di.sco_mtu = 0; | |
2010 | di.sco_pkts = 0; | |
2011 | } | |
1da177e4 LT |
2012 | di.link_policy = hdev->link_policy; |
2013 | di.link_mode = hdev->link_mode; | |
2014 | ||
2015 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2016 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2017 | ||
2018 | if (copy_to_user(arg, &di, sizeof(di))) | |
2019 | err = -EFAULT; | |
2020 | ||
2021 | hci_dev_put(hdev); | |
2022 | ||
2023 | return err; | |
2024 | } | |
2025 | ||
2026 | /* ---- Interface to HCI drivers ---- */ | |
2027 | ||
611b30f7 MH |
2028 | static int hci_rfkill_set_block(void *data, bool blocked) |
2029 | { | |
2030 | struct hci_dev *hdev = data; | |
2031 | ||
2032 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2033 | ||
d7a5a11d | 2034 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2035 | return -EBUSY; |
2036 | ||
5e130367 | 2037 | if (blocked) { |
a1536da2 | 2038 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2039 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2040 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2041 | hci_dev_do_close(hdev); |
5e130367 | 2042 | } else { |
a358dc11 | 2043 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2044 | } |
611b30f7 MH |
2045 | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | static const struct rfkill_ops hci_rfkill_ops = { | |
2050 | .set_block = hci_rfkill_set_block, | |
2051 | }; | |
2052 | ||
ab81cbf9 JH |
2053 | static void hci_power_on(struct work_struct *work) |
2054 | { | |
2055 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2056 | int err; |
ab81cbf9 JH |
2057 | |
2058 | BT_DBG("%s", hdev->name); | |
2059 | ||
2ff13894 JH |
2060 | if (test_bit(HCI_UP, &hdev->flags) && |
2061 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
2062 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 2063 | cancel_delayed_work(&hdev->power_off); |
2ff13894 JH |
2064 | hci_req_sync_lock(hdev); |
2065 | err = __hci_req_hci_power_on(hdev); | |
2066 | hci_req_sync_unlock(hdev); | |
2067 | mgmt_power_on(hdev, err); | |
2068 | return; | |
2069 | } | |
2070 | ||
cbed0ca1 | 2071 | err = hci_dev_do_open(hdev); |
96570ffc | 2072 | if (err < 0) { |
3ad67582 | 2073 | hci_dev_lock(hdev); |
96570ffc | 2074 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2075 | hci_dev_unlock(hdev); |
ab81cbf9 | 2076 | return; |
96570ffc | 2077 | } |
ab81cbf9 | 2078 | |
a5c8f270 MH |
2079 | /* During the HCI setup phase, a few error conditions are |
2080 | * ignored and they need to be checked now. If they are still | |
2081 | * valid, it is important to turn the device back off. | |
2082 | */ | |
d7a5a11d MH |
2083 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2084 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
ca8bee5d | 2085 | (hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
2086 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2087 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2088 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2089 | hci_dev_do_close(hdev); |
d7a5a11d | 2090 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2091 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2092 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2093 | } |
ab81cbf9 | 2094 | |
a69d8927 | 2095 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2096 | /* For unconfigured devices, set the HCI_RAW flag |
2097 | * so that userspace can easily identify them. | |
4a964404 | 2098 | */ |
d7a5a11d | 2099 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2100 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2101 | |
2102 | /* For fully configured devices, this will send | |
2103 | * the Index Added event. For unconfigured devices, | |
2104 | * it will send Unconfigued Index Added event. | |
2105 | * | |
2106 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2107 | * and no event will be send. | |
2108 | */ | |
2109 | mgmt_index_added(hdev); | |
a69d8927 | 2110 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2111 | /* When the controller is now configured, then it |
2112 | * is important to clear the HCI_RAW flag. | |
2113 | */ | |
d7a5a11d | 2114 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2115 | clear_bit(HCI_RAW, &hdev->flags); |
2116 | ||
d603b76b MH |
2117 | /* Powering on the controller with HCI_CONFIG set only |
2118 | * happens with the transition from unconfigured to | |
2119 | * configured. This will send the Index Added event. | |
2120 | */ | |
744cf19e | 2121 | mgmt_index_added(hdev); |
fee746b0 | 2122 | } |
ab81cbf9 JH |
2123 | } |
2124 | ||
2125 | static void hci_power_off(struct work_struct *work) | |
2126 | { | |
3243553f | 2127 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2128 | power_off.work); |
ab81cbf9 JH |
2129 | |
2130 | BT_DBG("%s", hdev->name); | |
2131 | ||
8ee56540 | 2132 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2133 | } |
2134 | ||
c7741d16 MH |
2135 | static void hci_error_reset(struct work_struct *work) |
2136 | { | |
2137 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2138 | ||
2139 | BT_DBG("%s", hdev->name); | |
2140 | ||
2141 | if (hdev->hw_error) | |
2142 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2143 | else | |
2064ee33 | 2144 | bt_dev_err(hdev, "hardware error 0x%2.2x", hdev->hw_error_code); |
c7741d16 MH |
2145 | |
2146 | if (hci_dev_do_close(hdev)) | |
2147 | return; | |
2148 | ||
c7741d16 MH |
2149 | hci_dev_do_open(hdev); |
2150 | } | |
2151 | ||
35f7498a | 2152 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2153 | { |
4821002c | 2154 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2155 | |
4821002c JH |
2156 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2157 | list_del(&uuid->list); | |
2aeb9a1a JH |
2158 | kfree(uuid); |
2159 | } | |
2aeb9a1a JH |
2160 | } |
2161 | ||
35f7498a | 2162 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2163 | { |
0378b597 | 2164 | struct link_key *key; |
55ed8ca1 | 2165 | |
0378b597 JH |
2166 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2167 | list_del_rcu(&key->list); | |
2168 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2169 | } |
55ed8ca1 JH |
2170 | } |
2171 | ||
35f7498a | 2172 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2173 | { |
970d0f1b | 2174 | struct smp_ltk *k; |
b899efaf | 2175 | |
970d0f1b JH |
2176 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2177 | list_del_rcu(&k->list); | |
2178 | kfree_rcu(k, rcu); | |
b899efaf | 2179 | } |
b899efaf VCG |
2180 | } |
2181 | ||
970c4e46 JH |
2182 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2183 | { | |
adae20cb | 2184 | struct smp_irk *k; |
970c4e46 | 2185 | |
adae20cb JH |
2186 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2187 | list_del_rcu(&k->list); | |
2188 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2189 | } |
2190 | } | |
2191 | ||
55ed8ca1 JH |
2192 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2193 | { | |
8035ded4 | 2194 | struct link_key *k; |
55ed8ca1 | 2195 | |
0378b597 JH |
2196 | rcu_read_lock(); |
2197 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2198 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2199 | rcu_read_unlock(); | |
55ed8ca1 | 2200 | return k; |
0378b597 JH |
2201 | } |
2202 | } | |
2203 | rcu_read_unlock(); | |
55ed8ca1 JH |
2204 | |
2205 | return NULL; | |
2206 | } | |
2207 | ||
745c0ce3 | 2208 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2209 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2210 | { |
2211 | /* Legacy key */ | |
2212 | if (key_type < 0x03) | |
745c0ce3 | 2213 | return true; |
d25e28ab JH |
2214 | |
2215 | /* Debug keys are insecure so don't store them persistently */ | |
2216 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2217 | return false; |
d25e28ab JH |
2218 | |
2219 | /* Changed combination key and there's no previous one */ | |
2220 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2221 | return false; |
d25e28ab JH |
2222 | |
2223 | /* Security mode 3 case */ | |
2224 | if (!conn) | |
745c0ce3 | 2225 | return true; |
d25e28ab | 2226 | |
e3befab9 JH |
2227 | /* BR/EDR key derived using SC from an LE link */ |
2228 | if (conn->type == LE_LINK) | |
2229 | return true; | |
2230 | ||
d25e28ab JH |
2231 | /* Neither local nor remote side had no-bonding as requirement */ |
2232 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2233 | return true; |
d25e28ab JH |
2234 | |
2235 | /* Local side had dedicated bonding as requirement */ | |
2236 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2237 | return true; |
d25e28ab JH |
2238 | |
2239 | /* Remote side had dedicated bonding as requirement */ | |
2240 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2241 | return true; |
d25e28ab JH |
2242 | |
2243 | /* If none of the above criteria match, then don't store the key | |
2244 | * persistently */ | |
745c0ce3 | 2245 | return false; |
d25e28ab JH |
2246 | } |
2247 | ||
e804d25d | 2248 | static u8 ltk_role(u8 type) |
98a0b845 | 2249 | { |
e804d25d JH |
2250 | if (type == SMP_LTK) |
2251 | return HCI_ROLE_MASTER; | |
98a0b845 | 2252 | |
e804d25d | 2253 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2254 | } |
2255 | ||
f3a73d97 JH |
2256 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2257 | u8 addr_type, u8 role) | |
75d262c2 | 2258 | { |
c9839a11 | 2259 | struct smp_ltk *k; |
75d262c2 | 2260 | |
970d0f1b JH |
2261 | rcu_read_lock(); |
2262 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2263 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2264 | continue; | |
2265 | ||
923e2414 | 2266 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2267 | rcu_read_unlock(); |
75d262c2 | 2268 | return k; |
970d0f1b JH |
2269 | } |
2270 | } | |
2271 | rcu_read_unlock(); | |
75d262c2 VCG |
2272 | |
2273 | return NULL; | |
2274 | } | |
75d262c2 | 2275 | |
970c4e46 JH |
2276 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2277 | { | |
2278 | struct smp_irk *irk; | |
2279 | ||
adae20cb JH |
2280 | rcu_read_lock(); |
2281 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2282 | if (!bacmp(&irk->rpa, rpa)) { | |
2283 | rcu_read_unlock(); | |
970c4e46 | 2284 | return irk; |
adae20cb | 2285 | } |
970c4e46 JH |
2286 | } |
2287 | ||
adae20cb | 2288 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2289 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2290 | bacpy(&irk->rpa, rpa); |
adae20cb | 2291 | rcu_read_unlock(); |
970c4e46 JH |
2292 | return irk; |
2293 | } | |
2294 | } | |
adae20cb | 2295 | rcu_read_unlock(); |
970c4e46 JH |
2296 | |
2297 | return NULL; | |
2298 | } | |
2299 | ||
2300 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2301 | u8 addr_type) | |
2302 | { | |
2303 | struct smp_irk *irk; | |
2304 | ||
6cfc9988 JH |
2305 | /* Identity Address must be public or static random */ |
2306 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2307 | return NULL; | |
2308 | ||
adae20cb JH |
2309 | rcu_read_lock(); |
2310 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2311 | if (addr_type == irk->addr_type && |
adae20cb JH |
2312 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2313 | rcu_read_unlock(); | |
970c4e46 | 2314 | return irk; |
adae20cb | 2315 | } |
970c4e46 | 2316 | } |
adae20cb | 2317 | rcu_read_unlock(); |
970c4e46 JH |
2318 | |
2319 | return NULL; | |
2320 | } | |
2321 | ||
567fa2aa | 2322 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2323 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2324 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2325 | { |
2326 | struct link_key *key, *old_key; | |
745c0ce3 | 2327 | u8 old_key_type; |
55ed8ca1 JH |
2328 | |
2329 | old_key = hci_find_link_key(hdev, bdaddr); | |
2330 | if (old_key) { | |
2331 | old_key_type = old_key->type; | |
2332 | key = old_key; | |
2333 | } else { | |
12adcf3a | 2334 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2335 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2336 | if (!key) |
567fa2aa | 2337 | return NULL; |
0378b597 | 2338 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2339 | } |
2340 | ||
6ed93dc6 | 2341 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2342 | |
d25e28ab JH |
2343 | /* Some buggy controller combinations generate a changed |
2344 | * combination key for legacy pairing even when there's no | |
2345 | * previous key */ | |
2346 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2347 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2348 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2349 | if (conn) |
2350 | conn->key_type = type; | |
2351 | } | |
d25e28ab | 2352 | |
55ed8ca1 | 2353 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2354 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2355 | key->pin_len = pin_len; |
2356 | ||
b6020ba0 | 2357 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2358 | key->type = old_key_type; |
4748fed2 JH |
2359 | else |
2360 | key->type = type; | |
2361 | ||
7652ff6a JH |
2362 | if (persistent) |
2363 | *persistent = hci_persistent_key(hdev, conn, type, | |
2364 | old_key_type); | |
4df378a1 | 2365 | |
567fa2aa | 2366 | return key; |
55ed8ca1 JH |
2367 | } |
2368 | ||
ca9142b8 | 2369 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2370 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2371 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2372 | { |
c9839a11 | 2373 | struct smp_ltk *key, *old_key; |
e804d25d | 2374 | u8 role = ltk_role(type); |
75d262c2 | 2375 | |
f3a73d97 | 2376 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2377 | if (old_key) |
75d262c2 | 2378 | key = old_key; |
c9839a11 | 2379 | else { |
0a14ab41 | 2380 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2381 | if (!key) |
ca9142b8 | 2382 | return NULL; |
970d0f1b | 2383 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2384 | } |
2385 | ||
75d262c2 | 2386 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2387 | key->bdaddr_type = addr_type; |
2388 | memcpy(key->val, tk, sizeof(key->val)); | |
2389 | key->authenticated = authenticated; | |
2390 | key->ediv = ediv; | |
fe39c7b2 | 2391 | key->rand = rand; |
c9839a11 VCG |
2392 | key->enc_size = enc_size; |
2393 | key->type = type; | |
75d262c2 | 2394 | |
ca9142b8 | 2395 | return key; |
75d262c2 VCG |
2396 | } |
2397 | ||
ca9142b8 JH |
2398 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2399 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2400 | { |
2401 | struct smp_irk *irk; | |
2402 | ||
2403 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2404 | if (!irk) { | |
2405 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2406 | if (!irk) | |
ca9142b8 | 2407 | return NULL; |
970c4e46 JH |
2408 | |
2409 | bacpy(&irk->bdaddr, bdaddr); | |
2410 | irk->addr_type = addr_type; | |
2411 | ||
adae20cb | 2412 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2413 | } |
2414 | ||
2415 | memcpy(irk->val, val, 16); | |
2416 | bacpy(&irk->rpa, rpa); | |
2417 | ||
ca9142b8 | 2418 | return irk; |
970c4e46 JH |
2419 | } |
2420 | ||
55ed8ca1 JH |
2421 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2422 | { | |
2423 | struct link_key *key; | |
2424 | ||
2425 | key = hci_find_link_key(hdev, bdaddr); | |
2426 | if (!key) | |
2427 | return -ENOENT; | |
2428 | ||
6ed93dc6 | 2429 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2430 | |
0378b597 JH |
2431 | list_del_rcu(&key->list); |
2432 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2433 | |
2434 | return 0; | |
2435 | } | |
2436 | ||
e0b2b27e | 2437 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2438 | { |
970d0f1b | 2439 | struct smp_ltk *k; |
c51ffa0b | 2440 | int removed = 0; |
b899efaf | 2441 | |
970d0f1b | 2442 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2443 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2444 | continue; |
2445 | ||
6ed93dc6 | 2446 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2447 | |
970d0f1b JH |
2448 | list_del_rcu(&k->list); |
2449 | kfree_rcu(k, rcu); | |
c51ffa0b | 2450 | removed++; |
b899efaf VCG |
2451 | } |
2452 | ||
c51ffa0b | 2453 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2454 | } |
2455 | ||
a7ec7338 JH |
2456 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2457 | { | |
adae20cb | 2458 | struct smp_irk *k; |
a7ec7338 | 2459 | |
adae20cb | 2460 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2461 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2462 | continue; | |
2463 | ||
2464 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2465 | ||
adae20cb JH |
2466 | list_del_rcu(&k->list); |
2467 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2468 | } |
2469 | } | |
2470 | ||
55e76b38 JH |
2471 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2472 | { | |
2473 | struct smp_ltk *k; | |
4ba9faf3 | 2474 | struct smp_irk *irk; |
55e76b38 JH |
2475 | u8 addr_type; |
2476 | ||
2477 | if (type == BDADDR_BREDR) { | |
2478 | if (hci_find_link_key(hdev, bdaddr)) | |
2479 | return true; | |
2480 | return false; | |
2481 | } | |
2482 | ||
2483 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2484 | if (type == BDADDR_LE_PUBLIC) | |
2485 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2486 | else | |
2487 | addr_type = ADDR_LE_DEV_RANDOM; | |
2488 | ||
4ba9faf3 JH |
2489 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2490 | if (irk) { | |
2491 | bdaddr = &irk->bdaddr; | |
2492 | addr_type = irk->addr_type; | |
2493 | } | |
2494 | ||
55e76b38 JH |
2495 | rcu_read_lock(); |
2496 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2497 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2498 | rcu_read_unlock(); | |
55e76b38 | 2499 | return true; |
87c8b28d | 2500 | } |
55e76b38 JH |
2501 | } |
2502 | rcu_read_unlock(); | |
2503 | ||
2504 | return false; | |
2505 | } | |
2506 | ||
6bd32326 | 2507 | /* HCI command timer function */ |
65cc2b49 | 2508 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2509 | { |
65cc2b49 MH |
2510 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2511 | cmd_timer.work); | |
6bd32326 | 2512 | |
bda4f23a AE |
2513 | if (hdev->sent_cmd) { |
2514 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2515 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2516 | ||
2064ee33 | 2517 | bt_dev_err(hdev, "command 0x%4.4x tx timeout", opcode); |
bda4f23a | 2518 | } else { |
2064ee33 | 2519 | bt_dev_err(hdev, "command tx timeout"); |
bda4f23a AE |
2520 | } |
2521 | ||
6bd32326 | 2522 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2523 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2524 | } |
2525 | ||
2763eda6 | 2526 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2527 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2528 | { |
2529 | struct oob_data *data; | |
2530 | ||
6928a924 JH |
2531 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2532 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2533 | continue; | |
2534 | if (data->bdaddr_type != bdaddr_type) | |
2535 | continue; | |
2536 | return data; | |
2537 | } | |
2763eda6 SJ |
2538 | |
2539 | return NULL; | |
2540 | } | |
2541 | ||
6928a924 JH |
2542 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2543 | u8 bdaddr_type) | |
2763eda6 SJ |
2544 | { |
2545 | struct oob_data *data; | |
2546 | ||
6928a924 | 2547 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2548 | if (!data) |
2549 | return -ENOENT; | |
2550 | ||
6928a924 | 2551 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2552 | |
2553 | list_del(&data->list); | |
2554 | kfree(data); | |
2555 | ||
2556 | return 0; | |
2557 | } | |
2558 | ||
35f7498a | 2559 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2560 | { |
2561 | struct oob_data *data, *n; | |
2562 | ||
2563 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2564 | list_del(&data->list); | |
2565 | kfree(data); | |
2566 | } | |
2763eda6 SJ |
2567 | } |
2568 | ||
0798872e | 2569 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2570 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2571 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2572 | { |
2573 | struct oob_data *data; | |
2574 | ||
6928a924 | 2575 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2576 | if (!data) { |
0a14ab41 | 2577 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2578 | if (!data) |
2579 | return -ENOMEM; | |
2580 | ||
2581 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2582 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2583 | list_add(&data->list, &hdev->remote_oob_data); |
2584 | } | |
2585 | ||
81328d5c JH |
2586 | if (hash192 && rand192) { |
2587 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2588 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2589 | if (hash256 && rand256) |
2590 | data->present = 0x03; | |
81328d5c JH |
2591 | } else { |
2592 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2593 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2594 | if (hash256 && rand256) |
2595 | data->present = 0x02; | |
2596 | else | |
2597 | data->present = 0x00; | |
0798872e MH |
2598 | } |
2599 | ||
81328d5c JH |
2600 | if (hash256 && rand256) { |
2601 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2602 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2603 | } else { | |
2604 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2605 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2606 | if (hash192 && rand192) |
2607 | data->present = 0x01; | |
81328d5c | 2608 | } |
0798872e | 2609 | |
6ed93dc6 | 2610 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2611 | |
2612 | return 0; | |
2613 | } | |
2614 | ||
d2609b34 FG |
2615 | /* This function requires the caller holds hdev->lock */ |
2616 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2617 | { | |
2618 | struct adv_info *adv_instance; | |
2619 | ||
2620 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2621 | if (adv_instance->instance == instance) | |
2622 | return adv_instance; | |
2623 | } | |
2624 | ||
2625 | return NULL; | |
2626 | } | |
2627 | ||
2628 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
2629 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
2630 | { | |
d2609b34 FG |
2631 | struct adv_info *cur_instance; |
2632 | ||
2633 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2634 | if (!cur_instance) | |
2635 | return NULL; | |
2636 | ||
2637 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2638 | struct adv_info, list)) | |
2639 | return list_first_entry(&hdev->adv_instances, | |
2640 | struct adv_info, list); | |
2641 | else | |
2642 | return list_next_entry(cur_instance, list); | |
2643 | } | |
2644 | ||
2645 | /* This function requires the caller holds hdev->lock */ | |
2646 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2647 | { | |
2648 | struct adv_info *adv_instance; | |
2649 | ||
2650 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2651 | if (!adv_instance) | |
2652 | return -ENOENT; | |
2653 | ||
2654 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2655 | ||
cab054ab JH |
2656 | if (hdev->cur_adv_instance == instance) { |
2657 | if (hdev->adv_instance_timeout) { | |
2658 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2659 | hdev->adv_instance_timeout = 0; | |
2660 | } | |
2661 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
2662 | } |
2663 | ||
d2609b34 FG |
2664 | list_del(&adv_instance->list); |
2665 | kfree(adv_instance); | |
2666 | ||
2667 | hdev->adv_instance_cnt--; | |
2668 | ||
2669 | return 0; | |
2670 | } | |
2671 | ||
2672 | /* This function requires the caller holds hdev->lock */ | |
2673 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2674 | { | |
2675 | struct adv_info *adv_instance, *n; | |
2676 | ||
5d900e46 FG |
2677 | if (hdev->adv_instance_timeout) { |
2678 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2679 | hdev->adv_instance_timeout = 0; | |
2680 | } | |
2681 | ||
d2609b34 FG |
2682 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2683 | list_del(&adv_instance->list); | |
2684 | kfree(adv_instance); | |
2685 | } | |
2686 | ||
2687 | hdev->adv_instance_cnt = 0; | |
cab054ab | 2688 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
2689 | } |
2690 | ||
2691 | /* This function requires the caller holds hdev->lock */ | |
2692 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2693 | u16 adv_data_len, u8 *adv_data, | |
2694 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2695 | u16 timeout, u16 duration) | |
2696 | { | |
2697 | struct adv_info *adv_instance; | |
2698 | ||
2699 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2700 | if (adv_instance) { | |
2701 | memset(adv_instance->adv_data, 0, | |
2702 | sizeof(adv_instance->adv_data)); | |
2703 | memset(adv_instance->scan_rsp_data, 0, | |
2704 | sizeof(adv_instance->scan_rsp_data)); | |
2705 | } else { | |
2706 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2707 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2708 | return -EOVERFLOW; | |
2709 | ||
39ecfad6 | 2710 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2711 | if (!adv_instance) |
2712 | return -ENOMEM; | |
2713 | ||
fffd38bc | 2714 | adv_instance->pending = true; |
d2609b34 FG |
2715 | adv_instance->instance = instance; |
2716 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2717 | hdev->adv_instance_cnt++; | |
2718 | } | |
2719 | ||
2720 | adv_instance->flags = flags; | |
2721 | adv_instance->adv_data_len = adv_data_len; | |
2722 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2723 | ||
2724 | if (adv_data_len) | |
2725 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2726 | ||
2727 | if (scan_rsp_len) | |
2728 | memcpy(adv_instance->scan_rsp_data, | |
2729 | scan_rsp_data, scan_rsp_len); | |
2730 | ||
2731 | adv_instance->timeout = timeout; | |
5d900e46 | 2732 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2733 | |
2734 | if (duration == 0) | |
2735 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2736 | else | |
2737 | adv_instance->duration = duration; | |
2738 | ||
2739 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2740 | ||
2741 | return 0; | |
2742 | } | |
2743 | ||
dcc36c16 | 2744 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2745 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2746 | { |
8035ded4 | 2747 | struct bdaddr_list *b; |
b2a66aad | 2748 | |
dcc36c16 | 2749 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2750 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2751 | return b; |
b9ee0a78 | 2752 | } |
b2a66aad AJ |
2753 | |
2754 | return NULL; | |
2755 | } | |
2756 | ||
dcc36c16 | 2757 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2758 | { |
7eb7404f | 2759 | struct bdaddr_list *b, *n; |
b2a66aad | 2760 | |
7eb7404f GT |
2761 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2762 | list_del(&b->list); | |
b2a66aad AJ |
2763 | kfree(b); |
2764 | } | |
b2a66aad AJ |
2765 | } |
2766 | ||
dcc36c16 | 2767 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2768 | { |
2769 | struct bdaddr_list *entry; | |
b2a66aad | 2770 | |
b9ee0a78 | 2771 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2772 | return -EBADF; |
2773 | ||
dcc36c16 | 2774 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2775 | return -EEXIST; |
b2a66aad | 2776 | |
27f70f3e | 2777 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2778 | if (!entry) |
2779 | return -ENOMEM; | |
b2a66aad AJ |
2780 | |
2781 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2782 | entry->bdaddr_type = type; |
b2a66aad | 2783 | |
dcc36c16 | 2784 | list_add(&entry->list, list); |
b2a66aad | 2785 | |
2a8357f2 | 2786 | return 0; |
b2a66aad AJ |
2787 | } |
2788 | ||
dcc36c16 | 2789 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2790 | { |
2791 | struct bdaddr_list *entry; | |
b2a66aad | 2792 | |
35f7498a | 2793 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2794 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2795 | return 0; |
2796 | } | |
b2a66aad | 2797 | |
dcc36c16 | 2798 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2799 | if (!entry) |
2800 | return -ENOENT; | |
2801 | ||
2802 | list_del(&entry->list); | |
2803 | kfree(entry); | |
2804 | ||
2805 | return 0; | |
2806 | } | |
2807 | ||
15819a70 AG |
2808 | /* This function requires the caller holds hdev->lock */ |
2809 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2810 | bdaddr_t *addr, u8 addr_type) | |
2811 | { | |
2812 | struct hci_conn_params *params; | |
2813 | ||
2814 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2815 | if (bacmp(¶ms->addr, addr) == 0 && | |
2816 | params->addr_type == addr_type) { | |
2817 | return params; | |
2818 | } | |
2819 | } | |
2820 | ||
2821 | return NULL; | |
2822 | } | |
2823 | ||
4b10966f | 2824 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2825 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2826 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2827 | { |
912b42ef | 2828 | struct hci_conn_params *param; |
a9b0a04c | 2829 | |
501f8827 | 2830 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2831 | if (bacmp(¶m->addr, addr) == 0 && |
2832 | param->addr_type == addr_type) | |
2833 | return param; | |
4b10966f MH |
2834 | } |
2835 | ||
2836 | return NULL; | |
a9b0a04c AG |
2837 | } |
2838 | ||
15819a70 | 2839 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2840 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2841 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2842 | { |
2843 | struct hci_conn_params *params; | |
2844 | ||
2845 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2846 | if (params) |
51d167c0 | 2847 | return params; |
15819a70 AG |
2848 | |
2849 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2850 | if (!params) { | |
2064ee33 | 2851 | bt_dev_err(hdev, "out of memory"); |
51d167c0 | 2852 | return NULL; |
15819a70 AG |
2853 | } |
2854 | ||
2855 | bacpy(¶ms->addr, addr); | |
2856 | params->addr_type = addr_type; | |
cef952ce AG |
2857 | |
2858 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2859 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2860 | |
bf5b3c8b MH |
2861 | params->conn_min_interval = hdev->le_conn_min_interval; |
2862 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2863 | params->conn_latency = hdev->le_conn_latency; | |
2864 | params->supervision_timeout = hdev->le_supv_timeout; | |
2865 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2866 | ||
2867 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2868 | ||
51d167c0 | 2869 | return params; |
bf5b3c8b MH |
2870 | } |
2871 | ||
f6c63249 | 2872 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2873 | { |
f8aaf9b6 | 2874 | if (params->conn) { |
f161dd41 | 2875 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2876 | hci_conn_put(params->conn); |
2877 | } | |
f161dd41 | 2878 | |
95305baa | 2879 | list_del(¶ms->action); |
15819a70 AG |
2880 | list_del(¶ms->list); |
2881 | kfree(params); | |
f6c63249 JH |
2882 | } |
2883 | ||
2884 | /* This function requires the caller holds hdev->lock */ | |
2885 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2886 | { | |
2887 | struct hci_conn_params *params; | |
2888 | ||
2889 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2890 | if (!params) | |
2891 | return; | |
2892 | ||
2893 | hci_conn_params_free(params); | |
15819a70 | 2894 | |
95305baa JH |
2895 | hci_update_background_scan(hdev); |
2896 | ||
15819a70 AG |
2897 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2898 | } | |
2899 | ||
2900 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2901 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2902 | { |
2903 | struct hci_conn_params *params, *tmp; | |
2904 | ||
2905 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2906 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2907 | continue; | |
f75113a2 JP |
2908 | |
2909 | /* If trying to estabilish one time connection to disabled | |
2910 | * device, leave the params, but mark them as just once. | |
2911 | */ | |
2912 | if (params->explicit_connect) { | |
2913 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2914 | continue; | |
2915 | } | |
2916 | ||
15819a70 AG |
2917 | list_del(¶ms->list); |
2918 | kfree(params); | |
2919 | } | |
2920 | ||
55af49a8 | 2921 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2922 | } |
2923 | ||
2924 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2925 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2926 | { |
15819a70 | 2927 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2928 | |
f6c63249 JH |
2929 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2930 | hci_conn_params_free(params); | |
77a77a30 | 2931 | |
15819a70 | 2932 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2933 | } |
2934 | ||
a1f4c318 JH |
2935 | /* Copy the Identity Address of the controller. |
2936 | * | |
2937 | * If the controller has a public BD_ADDR, then by default use that one. | |
2938 | * If this is a LE only controller without a public address, default to | |
2939 | * the static random address. | |
2940 | * | |
2941 | * For debugging purposes it is possible to force controllers with a | |
2942 | * public address to use the static random address instead. | |
50b5b952 MH |
2943 | * |
2944 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2945 | * userspace has configured a static address, then that address | |
2946 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2947 | */ |
2948 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2949 | u8 *bdaddr_type) | |
2950 | { | |
b7cb93e5 | 2951 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2952 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2953 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2954 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2955 | bacpy(bdaddr, &hdev->static_addr); |
2956 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2957 | } else { | |
2958 | bacpy(bdaddr, &hdev->bdaddr); | |
2959 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2960 | } | |
2961 | } | |
2962 | ||
9be0dab7 DH |
2963 | /* Alloc HCI device */ |
2964 | struct hci_dev *hci_alloc_dev(void) | |
2965 | { | |
2966 | struct hci_dev *hdev; | |
2967 | ||
27f70f3e | 2968 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
2969 | if (!hdev) |
2970 | return NULL; | |
2971 | ||
b1b813d4 DH |
2972 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2973 | hdev->esco_type = (ESCO_HV1); | |
2974 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2975 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2976 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2977 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2978 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2979 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2980 | hdev->adv_instance_cnt = 0; |
2981 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2982 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2983 | |
b1b813d4 DH |
2984 | hdev->sniff_max_interval = 800; |
2985 | hdev->sniff_min_interval = 80; | |
2986 | ||
3f959d46 | 2987 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2988 | hdev->le_adv_min_interval = 0x0800; |
2989 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2990 | hdev->le_scan_interval = 0x0060; |
2991 | hdev->le_scan_window = 0x0030; | |
b48c3b59 JH |
2992 | hdev->le_conn_min_interval = 0x0018; |
2993 | hdev->le_conn_max_interval = 0x0028; | |
04fb7d90 MH |
2994 | hdev->le_conn_latency = 0x0000; |
2995 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2996 | hdev->le_def_tx_len = 0x001b; |
2997 | hdev->le_def_tx_time = 0x0148; | |
2998 | hdev->le_max_tx_len = 0x001b; | |
2999 | hdev->le_max_tx_time = 0x0148; | |
3000 | hdev->le_max_rx_len = 0x001b; | |
3001 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 3002 | |
d6bfd59c | 3003 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3004 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3005 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3006 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3007 | |
b1b813d4 DH |
3008 | mutex_init(&hdev->lock); |
3009 | mutex_init(&hdev->req_lock); | |
3010 | ||
3011 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3012 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3013 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3014 | INIT_LIST_HEAD(&hdev->uuids); |
3015 | INIT_LIST_HEAD(&hdev->link_keys); | |
3016 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3017 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3018 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3019 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3020 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3021 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3022 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3023 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 3024 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
3025 | |
3026 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3027 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3028 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3029 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3030 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3031 | |
b1b813d4 | 3032 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 3033 | |
b1b813d4 DH |
3034 | skb_queue_head_init(&hdev->rx_q); |
3035 | skb_queue_head_init(&hdev->cmd_q); | |
3036 | skb_queue_head_init(&hdev->raw_q); | |
3037 | ||
3038 | init_waitqueue_head(&hdev->req_wait_q); | |
3039 | ||
65cc2b49 | 3040 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3041 | |
5fc16cc4 JH |
3042 | hci_request_setup(hdev); |
3043 | ||
b1b813d4 DH |
3044 | hci_init_sysfs(hdev); |
3045 | discovery_init(hdev); | |
9be0dab7 DH |
3046 | |
3047 | return hdev; | |
3048 | } | |
3049 | EXPORT_SYMBOL(hci_alloc_dev); | |
3050 | ||
3051 | /* Free HCI device */ | |
3052 | void hci_free_dev(struct hci_dev *hdev) | |
3053 | { | |
9be0dab7 DH |
3054 | /* will free via device release */ |
3055 | put_device(&hdev->dev); | |
3056 | } | |
3057 | EXPORT_SYMBOL(hci_free_dev); | |
3058 | ||
1da177e4 LT |
3059 | /* Register HCI device */ |
3060 | int hci_register_dev(struct hci_dev *hdev) | |
3061 | { | |
b1b813d4 | 3062 | int id, error; |
1da177e4 | 3063 | |
74292d5a | 3064 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3065 | return -EINVAL; |
3066 | ||
08add513 MM |
3067 | /* Do not allow HCI_AMP devices to register at index 0, |
3068 | * so the index can be used as the AMP controller ID. | |
3069 | */ | |
3df92b31 | 3070 | switch (hdev->dev_type) { |
ca8bee5d | 3071 | case HCI_PRIMARY: |
3df92b31 SL |
3072 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
3073 | break; | |
3074 | case HCI_AMP: | |
3075 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3076 | break; | |
3077 | default: | |
3078 | return -EINVAL; | |
1da177e4 | 3079 | } |
8e87d142 | 3080 | |
3df92b31 SL |
3081 | if (id < 0) |
3082 | return id; | |
3083 | ||
1da177e4 LT |
3084 | sprintf(hdev->name, "hci%d", id); |
3085 | hdev->id = id; | |
2d8b3a11 AE |
3086 | |
3087 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3088 | ||
29e2dd0d | 3089 | hdev->workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, hdev->name); |
33ca954d DH |
3090 | if (!hdev->workqueue) { |
3091 | error = -ENOMEM; | |
3092 | goto err; | |
3093 | } | |
f48fd9c8 | 3094 | |
29e2dd0d TH |
3095 | hdev->req_workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, |
3096 | hdev->name); | |
6ead1bbc JH |
3097 | if (!hdev->req_workqueue) { |
3098 | destroy_workqueue(hdev->workqueue); | |
3099 | error = -ENOMEM; | |
3100 | goto err; | |
3101 | } | |
3102 | ||
0153e2ec MH |
3103 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3104 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3105 | ||
bdc3e0f1 MH |
3106 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3107 | ||
3108 | error = device_add(&hdev->dev); | |
33ca954d | 3109 | if (error < 0) |
54506918 | 3110 | goto err_wqueue; |
1da177e4 | 3111 | |
6d5d2ee6 HK |
3112 | hci_leds_init(hdev); |
3113 | ||
611b30f7 | 3114 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3115 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3116 | hdev); | |
611b30f7 MH |
3117 | if (hdev->rfkill) { |
3118 | if (rfkill_register(hdev->rfkill) < 0) { | |
3119 | rfkill_destroy(hdev->rfkill); | |
3120 | hdev->rfkill = NULL; | |
3121 | } | |
3122 | } | |
3123 | ||
5e130367 | 3124 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3125 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3126 | |
a1536da2 MH |
3127 | hci_dev_set_flag(hdev, HCI_SETUP); |
3128 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3129 | |
ca8bee5d | 3130 | if (hdev->dev_type == HCI_PRIMARY) { |
56f87901 JH |
3131 | /* Assume BR/EDR support until proven otherwise (such as |
3132 | * through reading supported features during init. | |
3133 | */ | |
a1536da2 | 3134 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3135 | } |
ce2be9ac | 3136 | |
fcee3377 GP |
3137 | write_lock(&hci_dev_list_lock); |
3138 | list_add(&hdev->list, &hci_dev_list); | |
3139 | write_unlock(&hci_dev_list_lock); | |
3140 | ||
4a964404 MH |
3141 | /* Devices that are marked for raw-only usage are unconfigured |
3142 | * and should not be included in normal operation. | |
fee746b0 MH |
3143 | */ |
3144 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3145 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3146 | |
05fcd4c4 | 3147 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3148 | hci_dev_hold(hdev); |
1da177e4 | 3149 | |
19202573 | 3150 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3151 | |
1da177e4 | 3152 | return id; |
f48fd9c8 | 3153 | |
33ca954d DH |
3154 | err_wqueue: |
3155 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3156 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3157 | err: |
3df92b31 | 3158 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3159 | |
33ca954d | 3160 | return error; |
1da177e4 LT |
3161 | } |
3162 | EXPORT_SYMBOL(hci_register_dev); | |
3163 | ||
3164 | /* Unregister HCI device */ | |
59735631 | 3165 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3166 | { |
2d7cc19e | 3167 | int id; |
ef222013 | 3168 | |
c13854ce | 3169 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3170 | |
a1536da2 | 3171 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3172 | |
3df92b31 SL |
3173 | id = hdev->id; |
3174 | ||
f20d09d5 | 3175 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3176 | list_del(&hdev->list); |
f20d09d5 | 3177 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 3178 | |
b9b5ef18 GP |
3179 | cancel_work_sync(&hdev->power_on); |
3180 | ||
bf389cab JS |
3181 | hci_dev_do_close(hdev); |
3182 | ||
ab81cbf9 | 3183 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3184 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3185 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3186 | hci_dev_lock(hdev); |
744cf19e | 3187 | mgmt_index_removed(hdev); |
09fd0de5 | 3188 | hci_dev_unlock(hdev); |
56e5cb86 | 3189 | } |
ab81cbf9 | 3190 | |
2e58ef3e JH |
3191 | /* mgmt_index_removed should take care of emptying the |
3192 | * pending list */ | |
3193 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3194 | ||
05fcd4c4 | 3195 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3196 | |
611b30f7 MH |
3197 | if (hdev->rfkill) { |
3198 | rfkill_unregister(hdev->rfkill); | |
3199 | rfkill_destroy(hdev->rfkill); | |
3200 | } | |
3201 | ||
bdc3e0f1 | 3202 | device_del(&hdev->dev); |
147e2d59 | 3203 | |
0153e2ec | 3204 | debugfs_remove_recursive(hdev->debugfs); |
5177a838 MH |
3205 | kfree_const(hdev->hw_info); |
3206 | kfree_const(hdev->fw_info); | |
0153e2ec | 3207 | |
f48fd9c8 | 3208 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3209 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3210 | |
09fd0de5 | 3211 | hci_dev_lock(hdev); |
dcc36c16 | 3212 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3213 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3214 | hci_uuids_clear(hdev); |
55ed8ca1 | 3215 | hci_link_keys_clear(hdev); |
b899efaf | 3216 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3217 | hci_smp_irks_clear(hdev); |
2763eda6 | 3218 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3219 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3220 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3221 | hci_conn_params_clear_all(hdev); |
22078800 | 3222 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3223 | hci_dev_unlock(hdev); |
e2e0cacb | 3224 | |
dc946bd8 | 3225 | hci_dev_put(hdev); |
3df92b31 SL |
3226 | |
3227 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3228 | } |
3229 | EXPORT_SYMBOL(hci_unregister_dev); | |
3230 | ||
3231 | /* Suspend HCI device */ | |
3232 | int hci_suspend_dev(struct hci_dev *hdev) | |
3233 | { | |
05fcd4c4 | 3234 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3235 | return 0; |
3236 | } | |
3237 | EXPORT_SYMBOL(hci_suspend_dev); | |
3238 | ||
3239 | /* Resume HCI device */ | |
3240 | int hci_resume_dev(struct hci_dev *hdev) | |
3241 | { | |
05fcd4c4 | 3242 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3243 | return 0; |
3244 | } | |
3245 | EXPORT_SYMBOL(hci_resume_dev); | |
3246 | ||
75e0569f MH |
3247 | /* Reset HCI device */ |
3248 | int hci_reset_dev(struct hci_dev *hdev) | |
3249 | { | |
3250 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3251 | struct sk_buff *skb; | |
3252 | ||
3253 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3254 | if (!skb) | |
3255 | return -ENOMEM; | |
3256 | ||
d79f34e3 | 3257 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
59ae1d12 | 3258 | skb_put_data(skb, hw_err, 3); |
75e0569f MH |
3259 | |
3260 | /* Send Hardware Error to upper stack */ | |
3261 | return hci_recv_frame(hdev, skb); | |
3262 | } | |
3263 | EXPORT_SYMBOL(hci_reset_dev); | |
3264 | ||
76bca880 | 3265 | /* Receive frame from HCI drivers */ |
e1a26170 | 3266 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3267 | { |
76bca880 | 3268 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3269 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3270 | kfree_skb(skb); |
3271 | return -ENXIO; | |
3272 | } | |
3273 | ||
d79f34e3 MH |
3274 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
3275 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
3276 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
fe806dce MH |
3277 | kfree_skb(skb); |
3278 | return -EINVAL; | |
3279 | } | |
3280 | ||
d82603c6 | 3281 | /* Incoming skb */ |
76bca880 MH |
3282 | bt_cb(skb)->incoming = 1; |
3283 | ||
3284 | /* Time stamp */ | |
3285 | __net_timestamp(skb); | |
3286 | ||
76bca880 | 3287 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3288 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3289 | |
76bca880 MH |
3290 | return 0; |
3291 | } | |
3292 | EXPORT_SYMBOL(hci_recv_frame); | |
3293 | ||
e875ff84 MH |
3294 | /* Receive diagnostic message from HCI drivers */ |
3295 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3296 | { | |
581d6fd6 | 3297 | /* Mark as diagnostic packet */ |
d79f34e3 | 3298 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3299 | |
e875ff84 MH |
3300 | /* Time stamp */ |
3301 | __net_timestamp(skb); | |
3302 | ||
581d6fd6 MH |
3303 | skb_queue_tail(&hdev->rx_q, skb); |
3304 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3305 | |
e875ff84 MH |
3306 | return 0; |
3307 | } | |
3308 | EXPORT_SYMBOL(hci_recv_diag); | |
3309 | ||
5177a838 MH |
3310 | void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...) |
3311 | { | |
3312 | va_list vargs; | |
3313 | ||
3314 | va_start(vargs, fmt); | |
3315 | kfree_const(hdev->hw_info); | |
3316 | hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3317 | va_end(vargs); | |
3318 | } | |
3319 | EXPORT_SYMBOL(hci_set_hw_info); | |
3320 | ||
3321 | void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...) | |
3322 | { | |
3323 | va_list vargs; | |
3324 | ||
3325 | va_start(vargs, fmt); | |
3326 | kfree_const(hdev->fw_info); | |
3327 | hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3328 | va_end(vargs); | |
3329 | } | |
3330 | EXPORT_SYMBOL(hci_set_fw_info); | |
3331 | ||
1da177e4 LT |
3332 | /* ---- Interface to upper protocols ---- */ |
3333 | ||
1da177e4 LT |
3334 | int hci_register_cb(struct hci_cb *cb) |
3335 | { | |
3336 | BT_DBG("%p name %s", cb, cb->name); | |
3337 | ||
fba7ecf0 | 3338 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3339 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3340 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3341 | |
3342 | return 0; | |
3343 | } | |
3344 | EXPORT_SYMBOL(hci_register_cb); | |
3345 | ||
3346 | int hci_unregister_cb(struct hci_cb *cb) | |
3347 | { | |
3348 | BT_DBG("%p name %s", cb, cb->name); | |
3349 | ||
fba7ecf0 | 3350 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3351 | list_del(&cb->list); |
fba7ecf0 | 3352 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3353 | |
3354 | return 0; | |
3355 | } | |
3356 | EXPORT_SYMBOL(hci_unregister_cb); | |
3357 | ||
51086991 | 3358 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3359 | { |
cdc52faa MH |
3360 | int err; |
3361 | ||
d79f34e3 MH |
3362 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3363 | skb->len); | |
1da177e4 | 3364 | |
cd82e61c MH |
3365 | /* Time stamp */ |
3366 | __net_timestamp(skb); | |
1da177e4 | 3367 | |
cd82e61c MH |
3368 | /* Send copy to monitor */ |
3369 | hci_send_to_monitor(hdev, skb); | |
3370 | ||
3371 | if (atomic_read(&hdev->promisc)) { | |
3372 | /* Send copy to the sockets */ | |
470fe1b5 | 3373 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3374 | } |
3375 | ||
3376 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3377 | skb_orphan(skb); | |
3378 | ||
73d0d3c8 MH |
3379 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3380 | kfree_skb(skb); | |
3381 | return; | |
3382 | } | |
3383 | ||
cdc52faa MH |
3384 | err = hdev->send(hdev, skb); |
3385 | if (err < 0) { | |
2064ee33 | 3386 | bt_dev_err(hdev, "sending frame failed (%d)", err); |
cdc52faa MH |
3387 | kfree_skb(skb); |
3388 | } | |
1da177e4 LT |
3389 | } |
3390 | ||
1ca3a9d0 | 3391 | /* Send HCI command */ |
07dc93dd JH |
3392 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3393 | const void *param) | |
1ca3a9d0 JH |
3394 | { |
3395 | struct sk_buff *skb; | |
3396 | ||
3397 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3398 | ||
3399 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3400 | if (!skb) { | |
2064ee33 | 3401 | bt_dev_err(hdev, "no memory for command"); |
1ca3a9d0 JH |
3402 | return -ENOMEM; |
3403 | } | |
3404 | ||
49c922bb | 3405 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3406 | * single-command requests. |
3407 | */ | |
44d27137 | 3408 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3409 | |
1da177e4 | 3410 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3411 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3412 | |
3413 | return 0; | |
3414 | } | |
1da177e4 | 3415 | |
d6ee6ad7 LP |
3416 | int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, |
3417 | const void *param) | |
3418 | { | |
3419 | struct sk_buff *skb; | |
3420 | ||
3421 | if (hci_opcode_ogf(opcode) != 0x3f) { | |
3422 | /* A controller receiving a command shall respond with either | |
3423 | * a Command Status Event or a Command Complete Event. | |
3424 | * Therefore, all standard HCI commands must be sent via the | |
3425 | * standard API, using hci_send_cmd or hci_cmd_sync helpers. | |
3426 | * Some vendors do not comply with this rule for vendor-specific | |
3427 | * commands and do not return any event. We want to support | |
3428 | * unresponded commands for such cases only. | |
3429 | */ | |
3430 | bt_dev_err(hdev, "unresponded command not supported"); | |
3431 | return -EINVAL; | |
3432 | } | |
3433 | ||
3434 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3435 | if (!skb) { | |
3436 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", | |
3437 | opcode); | |
3438 | return -ENOMEM; | |
3439 | } | |
3440 | ||
3441 | hci_send_frame(hdev, skb); | |
3442 | ||
3443 | return 0; | |
3444 | } | |
3445 | EXPORT_SYMBOL(__hci_cmd_send); | |
3446 | ||
1da177e4 | 3447 | /* Get data from the previously sent command */ |
a9de9248 | 3448 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3449 | { |
3450 | struct hci_command_hdr *hdr; | |
3451 | ||
3452 | if (!hdev->sent_cmd) | |
3453 | return NULL; | |
3454 | ||
3455 | hdr = (void *) hdev->sent_cmd->data; | |
3456 | ||
a9de9248 | 3457 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3458 | return NULL; |
3459 | ||
f0e09510 | 3460 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3461 | |
3462 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3463 | } | |
3464 | ||
fbef168f LP |
3465 | /* Send HCI command and wait for command commplete event */ |
3466 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3467 | const void *param, u32 timeout) | |
3468 | { | |
3469 | struct sk_buff *skb; | |
3470 | ||
3471 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3472 | return ERR_PTR(-ENETDOWN); | |
3473 | ||
3474 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3475 | ||
b504430c | 3476 | hci_req_sync_lock(hdev); |
fbef168f | 3477 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
b504430c | 3478 | hci_req_sync_unlock(hdev); |
fbef168f LP |
3479 | |
3480 | return skb; | |
3481 | } | |
3482 | EXPORT_SYMBOL(hci_cmd_sync); | |
3483 | ||
1da177e4 LT |
3484 | /* Send ACL data */ |
3485 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3486 | { | |
3487 | struct hci_acl_hdr *hdr; | |
3488 | int len = skb->len; | |
3489 | ||
badff6d0 ACM |
3490 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3491 | skb_reset_transport_header(skb); | |
9c70220b | 3492 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3493 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3494 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3495 | } |
3496 | ||
ee22be7e | 3497 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3498 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3499 | { |
ee22be7e | 3500 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3501 | struct hci_dev *hdev = conn->hdev; |
3502 | struct sk_buff *list; | |
3503 | ||
087bfd99 GP |
3504 | skb->len = skb_headlen(skb); |
3505 | skb->data_len = 0; | |
3506 | ||
d79f34e3 | 3507 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3508 | |
3509 | switch (hdev->dev_type) { | |
ca8bee5d | 3510 | case HCI_PRIMARY: |
204a6e54 AE |
3511 | hci_add_acl_hdr(skb, conn->handle, flags); |
3512 | break; | |
3513 | case HCI_AMP: | |
3514 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3515 | break; | |
3516 | default: | |
2064ee33 | 3517 | bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); |
204a6e54 AE |
3518 | return; |
3519 | } | |
087bfd99 | 3520 | |
70f23020 AE |
3521 | list = skb_shinfo(skb)->frag_list; |
3522 | if (!list) { | |
1da177e4 LT |
3523 | /* Non fragmented */ |
3524 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3525 | ||
73d80deb | 3526 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3527 | } else { |
3528 | /* Fragmented */ | |
3529 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3530 | ||
3531 | skb_shinfo(skb)->frag_list = NULL; | |
3532 | ||
9cfd5a23 JR |
3533 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3534 | * here because of 6LoWPAN links, as there this function is | |
3535 | * called from softirq and using normal spin lock could cause | |
3536 | * deadlocks. | |
3537 | */ | |
3538 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3539 | |
73d80deb | 3540 | __skb_queue_tail(queue, skb); |
e702112f AE |
3541 | |
3542 | flags &= ~ACL_START; | |
3543 | flags |= ACL_CONT; | |
1da177e4 LT |
3544 | do { |
3545 | skb = list; list = list->next; | |
8e87d142 | 3546 | |
d79f34e3 | 3547 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3548 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3549 | |
3550 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3551 | ||
73d80deb | 3552 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3553 | } while (list); |
3554 | ||
9cfd5a23 | 3555 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3556 | } |
73d80deb LAD |
3557 | } |
3558 | ||
3559 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3560 | { | |
ee22be7e | 3561 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3562 | |
f0e09510 | 3563 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3564 | |
ee22be7e | 3565 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3566 | |
3eff45ea | 3567 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3568 | } |
1da177e4 LT |
3569 | |
3570 | /* Send SCO data */ | |
0d861d8b | 3571 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3572 | { |
3573 | struct hci_dev *hdev = conn->hdev; | |
3574 | struct hci_sco_hdr hdr; | |
3575 | ||
3576 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3577 | ||
aca3192c | 3578 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3579 | hdr.dlen = skb->len; |
3580 | ||
badff6d0 ACM |
3581 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3582 | skb_reset_transport_header(skb); | |
9c70220b | 3583 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3584 | |
d79f34e3 | 3585 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3586 | |
1da177e4 | 3587 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3588 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3589 | } |
1da177e4 LT |
3590 | |
3591 | /* ---- HCI TX task (outgoing data) ---- */ | |
3592 | ||
3593 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3594 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3595 | int *quote) | |
1da177e4 LT |
3596 | { |
3597 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3598 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3599 | unsigned int num = 0, min = ~0; |
1da177e4 | 3600 | |
8e87d142 | 3601 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3602 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3603 | |
3604 | rcu_read_lock(); | |
3605 | ||
3606 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3607 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3608 | continue; |
769be974 MH |
3609 | |
3610 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3611 | continue; | |
3612 | ||
1da177e4 LT |
3613 | num++; |
3614 | ||
3615 | if (c->sent < min) { | |
3616 | min = c->sent; | |
3617 | conn = c; | |
3618 | } | |
52087a79 LAD |
3619 | |
3620 | if (hci_conn_num(hdev, type) == num) | |
3621 | break; | |
1da177e4 LT |
3622 | } |
3623 | ||
bf4c6325 GP |
3624 | rcu_read_unlock(); |
3625 | ||
1da177e4 | 3626 | if (conn) { |
6ed58ec5 VT |
3627 | int cnt, q; |
3628 | ||
3629 | switch (conn->type) { | |
3630 | case ACL_LINK: | |
3631 | cnt = hdev->acl_cnt; | |
3632 | break; | |
3633 | case SCO_LINK: | |
3634 | case ESCO_LINK: | |
3635 | cnt = hdev->sco_cnt; | |
3636 | break; | |
3637 | case LE_LINK: | |
3638 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3639 | break; | |
3640 | default: | |
3641 | cnt = 0; | |
2064ee33 | 3642 | bt_dev_err(hdev, "unknown link type %d", conn->type); |
6ed58ec5 VT |
3643 | } |
3644 | ||
3645 | q = cnt / num; | |
1da177e4 LT |
3646 | *quote = q ? q : 1; |
3647 | } else | |
3648 | *quote = 0; | |
3649 | ||
3650 | BT_DBG("conn %p quote %d", conn, *quote); | |
3651 | return conn; | |
3652 | } | |
3653 | ||
6039aa73 | 3654 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3655 | { |
3656 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3657 | struct hci_conn *c; |
1da177e4 | 3658 | |
2064ee33 | 3659 | bt_dev_err(hdev, "link tx timeout"); |
1da177e4 | 3660 | |
bf4c6325 GP |
3661 | rcu_read_lock(); |
3662 | ||
1da177e4 | 3663 | /* Kill stalled connections */ |
bf4c6325 | 3664 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3665 | if (c->type == type && c->sent) { |
2064ee33 MH |
3666 | bt_dev_err(hdev, "killing stalled connection %pMR", |
3667 | &c->dst); | |
bed71748 | 3668 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3669 | } |
3670 | } | |
bf4c6325 GP |
3671 | |
3672 | rcu_read_unlock(); | |
1da177e4 LT |
3673 | } |
3674 | ||
6039aa73 GP |
3675 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3676 | int *quote) | |
1da177e4 | 3677 | { |
73d80deb LAD |
3678 | struct hci_conn_hash *h = &hdev->conn_hash; |
3679 | struct hci_chan *chan = NULL; | |
abc5de8f | 3680 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3681 | struct hci_conn *conn; |
73d80deb LAD |
3682 | int cnt, q, conn_num = 0; |
3683 | ||
3684 | BT_DBG("%s", hdev->name); | |
3685 | ||
bf4c6325 GP |
3686 | rcu_read_lock(); |
3687 | ||
3688 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3689 | struct hci_chan *tmp; |
3690 | ||
3691 | if (conn->type != type) | |
3692 | continue; | |
3693 | ||
3694 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3695 | continue; | |
3696 | ||
3697 | conn_num++; | |
3698 | ||
8192edef | 3699 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3700 | struct sk_buff *skb; |
3701 | ||
3702 | if (skb_queue_empty(&tmp->data_q)) | |
3703 | continue; | |
3704 | ||
3705 | skb = skb_peek(&tmp->data_q); | |
3706 | if (skb->priority < cur_prio) | |
3707 | continue; | |
3708 | ||
3709 | if (skb->priority > cur_prio) { | |
3710 | num = 0; | |
3711 | min = ~0; | |
3712 | cur_prio = skb->priority; | |
3713 | } | |
3714 | ||
3715 | num++; | |
3716 | ||
3717 | if (conn->sent < min) { | |
3718 | min = conn->sent; | |
3719 | chan = tmp; | |
3720 | } | |
3721 | } | |
3722 | ||
3723 | if (hci_conn_num(hdev, type) == conn_num) | |
3724 | break; | |
3725 | } | |
3726 | ||
bf4c6325 GP |
3727 | rcu_read_unlock(); |
3728 | ||
73d80deb LAD |
3729 | if (!chan) |
3730 | return NULL; | |
3731 | ||
3732 | switch (chan->conn->type) { | |
3733 | case ACL_LINK: | |
3734 | cnt = hdev->acl_cnt; | |
3735 | break; | |
bd1eb66b AE |
3736 | case AMP_LINK: |
3737 | cnt = hdev->block_cnt; | |
3738 | break; | |
73d80deb LAD |
3739 | case SCO_LINK: |
3740 | case ESCO_LINK: | |
3741 | cnt = hdev->sco_cnt; | |
3742 | break; | |
3743 | case LE_LINK: | |
3744 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3745 | break; | |
3746 | default: | |
3747 | cnt = 0; | |
2064ee33 | 3748 | bt_dev_err(hdev, "unknown link type %d", chan->conn->type); |
73d80deb LAD |
3749 | } |
3750 | ||
3751 | q = cnt / num; | |
3752 | *quote = q ? q : 1; | |
3753 | BT_DBG("chan %p quote %d", chan, *quote); | |
3754 | return chan; | |
3755 | } | |
3756 | ||
02b20f0b LAD |
3757 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3758 | { | |
3759 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3760 | struct hci_conn *conn; | |
3761 | int num = 0; | |
3762 | ||
3763 | BT_DBG("%s", hdev->name); | |
3764 | ||
bf4c6325 GP |
3765 | rcu_read_lock(); |
3766 | ||
3767 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3768 | struct hci_chan *chan; |
3769 | ||
3770 | if (conn->type != type) | |
3771 | continue; | |
3772 | ||
3773 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3774 | continue; | |
3775 | ||
3776 | num++; | |
3777 | ||
8192edef | 3778 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3779 | struct sk_buff *skb; |
3780 | ||
3781 | if (chan->sent) { | |
3782 | chan->sent = 0; | |
3783 | continue; | |
3784 | } | |
3785 | ||
3786 | if (skb_queue_empty(&chan->data_q)) | |
3787 | continue; | |
3788 | ||
3789 | skb = skb_peek(&chan->data_q); | |
3790 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3791 | continue; | |
3792 | ||
3793 | skb->priority = HCI_PRIO_MAX - 1; | |
3794 | ||
3795 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3796 | skb->priority); |
02b20f0b LAD |
3797 | } |
3798 | ||
3799 | if (hci_conn_num(hdev, type) == num) | |
3800 | break; | |
3801 | } | |
bf4c6325 GP |
3802 | |
3803 | rcu_read_unlock(); | |
3804 | ||
02b20f0b LAD |
3805 | } |
3806 | ||
b71d385a AE |
3807 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3808 | { | |
3809 | /* Calculate count of blocks used by this packet */ | |
3810 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3811 | } | |
3812 | ||
6039aa73 | 3813 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3814 | { |
d7a5a11d | 3815 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3816 | /* ACL tx timeout must be longer than maximum |
3817 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3818 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3819 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3820 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3821 | } |
63d2bc1b | 3822 | } |
1da177e4 | 3823 | |
6039aa73 | 3824 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3825 | { |
3826 | unsigned int cnt = hdev->acl_cnt; | |
3827 | struct hci_chan *chan; | |
3828 | struct sk_buff *skb; | |
3829 | int quote; | |
3830 | ||
3831 | __check_timeout(hdev, cnt); | |
04837f64 | 3832 | |
73d80deb | 3833 | while (hdev->acl_cnt && |
a8c5fb1a | 3834 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3835 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3836 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3837 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3838 | skb->len, skb->priority); |
73d80deb | 3839 | |
ec1cce24 LAD |
3840 | /* Stop if priority has changed */ |
3841 | if (skb->priority < priority) | |
3842 | break; | |
3843 | ||
3844 | skb = skb_dequeue(&chan->data_q); | |
3845 | ||
73d80deb | 3846 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3847 | bt_cb(skb)->force_active); |
04837f64 | 3848 | |
57d17d70 | 3849 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3850 | hdev->acl_last_tx = jiffies; |
3851 | ||
3852 | hdev->acl_cnt--; | |
73d80deb LAD |
3853 | chan->sent++; |
3854 | chan->conn->sent++; | |
1da177e4 LT |
3855 | } |
3856 | } | |
02b20f0b LAD |
3857 | |
3858 | if (cnt != hdev->acl_cnt) | |
3859 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3860 | } |
3861 | ||
6039aa73 | 3862 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3863 | { |
63d2bc1b | 3864 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3865 | struct hci_chan *chan; |
3866 | struct sk_buff *skb; | |
3867 | int quote; | |
bd1eb66b | 3868 | u8 type; |
b71d385a | 3869 | |
63d2bc1b | 3870 | __check_timeout(hdev, cnt); |
b71d385a | 3871 | |
bd1eb66b AE |
3872 | BT_DBG("%s", hdev->name); |
3873 | ||
3874 | if (hdev->dev_type == HCI_AMP) | |
3875 | type = AMP_LINK; | |
3876 | else | |
3877 | type = ACL_LINK; | |
3878 | ||
b71d385a | 3879 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3880 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3881 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3882 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3883 | int blocks; | |
3884 | ||
3885 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3886 | skb->len, skb->priority); |
b71d385a AE |
3887 | |
3888 | /* Stop if priority has changed */ | |
3889 | if (skb->priority < priority) | |
3890 | break; | |
3891 | ||
3892 | skb = skb_dequeue(&chan->data_q); | |
3893 | ||
3894 | blocks = __get_blocks(hdev, skb); | |
3895 | if (blocks > hdev->block_cnt) | |
3896 | return; | |
3897 | ||
3898 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3899 | bt_cb(skb)->force_active); |
b71d385a | 3900 | |
57d17d70 | 3901 | hci_send_frame(hdev, skb); |
b71d385a AE |
3902 | hdev->acl_last_tx = jiffies; |
3903 | ||
3904 | hdev->block_cnt -= blocks; | |
3905 | quote -= blocks; | |
3906 | ||
3907 | chan->sent += blocks; | |
3908 | chan->conn->sent += blocks; | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3913 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3914 | } |
3915 | ||
6039aa73 | 3916 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3917 | { |
3918 | BT_DBG("%s", hdev->name); | |
3919 | ||
bd1eb66b | 3920 | /* No ACL link over BR/EDR controller */ |
ca8bee5d | 3921 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY) |
bd1eb66b AE |
3922 | return; |
3923 | ||
3924 | /* No AMP link over AMP controller */ | |
3925 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3926 | return; |
3927 | ||
3928 | switch (hdev->flow_ctl_mode) { | |
3929 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3930 | hci_sched_acl_pkt(hdev); | |
3931 | break; | |
3932 | ||
3933 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3934 | hci_sched_acl_blk(hdev); | |
3935 | break; | |
3936 | } | |
3937 | } | |
3938 | ||
1da177e4 | 3939 | /* Schedule SCO */ |
6039aa73 | 3940 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3941 | { |
3942 | struct hci_conn *conn; | |
3943 | struct sk_buff *skb; | |
3944 | int quote; | |
3945 | ||
3946 | BT_DBG("%s", hdev->name); | |
3947 | ||
52087a79 LAD |
3948 | if (!hci_conn_num(hdev, SCO_LINK)) |
3949 | return; | |
3950 | ||
1da177e4 LT |
3951 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3952 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3953 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3954 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3955 | |
3956 | conn->sent++; | |
3957 | if (conn->sent == ~0) | |
3958 | conn->sent = 0; | |
3959 | } | |
3960 | } | |
3961 | } | |
3962 | ||
6039aa73 | 3963 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3964 | { |
3965 | struct hci_conn *conn; | |
3966 | struct sk_buff *skb; | |
3967 | int quote; | |
3968 | ||
3969 | BT_DBG("%s", hdev->name); | |
3970 | ||
52087a79 LAD |
3971 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3972 | return; | |
3973 | ||
8fc9ced3 GP |
3974 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3975 | "e))) { | |
b6a0dc82 MH |
3976 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3977 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3978 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3979 | |
3980 | conn->sent++; | |
3981 | if (conn->sent == ~0) | |
3982 | conn->sent = 0; | |
3983 | } | |
3984 | } | |
3985 | } | |
3986 | ||
6039aa73 | 3987 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3988 | { |
73d80deb | 3989 | struct hci_chan *chan; |
6ed58ec5 | 3990 | struct sk_buff *skb; |
02b20f0b | 3991 | int quote, cnt, tmp; |
6ed58ec5 VT |
3992 | |
3993 | BT_DBG("%s", hdev->name); | |
3994 | ||
52087a79 LAD |
3995 | if (!hci_conn_num(hdev, LE_LINK)) |
3996 | return; | |
3997 | ||
d7a5a11d | 3998 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
3999 | /* LE tx timeout must be longer than maximum |
4000 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4001 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4002 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4003 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4004 | } |
4005 | ||
4006 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4007 | tmp = cnt; |
73d80deb | 4008 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4009 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4010 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4011 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4012 | skb->len, skb->priority); |
6ed58ec5 | 4013 | |
ec1cce24 LAD |
4014 | /* Stop if priority has changed */ |
4015 | if (skb->priority < priority) | |
4016 | break; | |
4017 | ||
4018 | skb = skb_dequeue(&chan->data_q); | |
4019 | ||
57d17d70 | 4020 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4021 | hdev->le_last_tx = jiffies; |
4022 | ||
4023 | cnt--; | |
73d80deb LAD |
4024 | chan->sent++; |
4025 | chan->conn->sent++; | |
6ed58ec5 VT |
4026 | } |
4027 | } | |
73d80deb | 4028 | |
6ed58ec5 VT |
4029 | if (hdev->le_pkts) |
4030 | hdev->le_cnt = cnt; | |
4031 | else | |
4032 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4033 | |
4034 | if (cnt != tmp) | |
4035 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4036 | } |
4037 | ||
3eff45ea | 4038 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4039 | { |
3eff45ea | 4040 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4041 | struct sk_buff *skb; |
4042 | ||
6ed58ec5 | 4043 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4044 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4045 | |
d7a5a11d | 4046 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4047 | /* Schedule queues and send stuff to HCI driver */ |
4048 | hci_sched_acl(hdev); | |
4049 | hci_sched_sco(hdev); | |
4050 | hci_sched_esco(hdev); | |
4051 | hci_sched_le(hdev); | |
4052 | } | |
6ed58ec5 | 4053 | |
1da177e4 LT |
4054 | /* Send next queued raw (unknown type) packet */ |
4055 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4056 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4057 | } |
4058 | ||
25985edc | 4059 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4060 | |
4061 | /* ACL data packet */ | |
6039aa73 | 4062 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4063 | { |
4064 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4065 | struct hci_conn *conn; | |
4066 | __u16 handle, flags; | |
4067 | ||
4068 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4069 | ||
4070 | handle = __le16_to_cpu(hdr->handle); | |
4071 | flags = hci_flags(handle); | |
4072 | handle = hci_handle(handle); | |
4073 | ||
f0e09510 | 4074 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4075 | handle, flags); |
1da177e4 LT |
4076 | |
4077 | hdev->stat.acl_rx++; | |
4078 | ||
4079 | hci_dev_lock(hdev); | |
4080 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4081 | hci_dev_unlock(hdev); | |
8e87d142 | 4082 | |
1da177e4 | 4083 | if (conn) { |
65983fc7 | 4084 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4085 | |
1da177e4 | 4086 | /* Send to upper protocol */ |
686ebf28 UF |
4087 | l2cap_recv_acldata(conn, skb, flags); |
4088 | return; | |
1da177e4 | 4089 | } else { |
2064ee33 MH |
4090 | bt_dev_err(hdev, "ACL packet for unknown connection handle %d", |
4091 | handle); | |
1da177e4 LT |
4092 | } |
4093 | ||
4094 | kfree_skb(skb); | |
4095 | } | |
4096 | ||
4097 | /* SCO data packet */ | |
6039aa73 | 4098 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4099 | { |
4100 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4101 | struct hci_conn *conn; | |
4102 | __u16 handle; | |
4103 | ||
4104 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4105 | ||
4106 | handle = __le16_to_cpu(hdr->handle); | |
4107 | ||
f0e09510 | 4108 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4109 | |
4110 | hdev->stat.sco_rx++; | |
4111 | ||
4112 | hci_dev_lock(hdev); | |
4113 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4114 | hci_dev_unlock(hdev); | |
4115 | ||
4116 | if (conn) { | |
1da177e4 | 4117 | /* Send to upper protocol */ |
686ebf28 UF |
4118 | sco_recv_scodata(conn, skb); |
4119 | return; | |
1da177e4 | 4120 | } else { |
2064ee33 MH |
4121 | bt_dev_err(hdev, "SCO packet for unknown connection handle %d", |
4122 | handle); | |
1da177e4 LT |
4123 | } |
4124 | ||
4125 | kfree_skb(skb); | |
4126 | } | |
4127 | ||
9238f36a JH |
4128 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4129 | { | |
4130 | struct sk_buff *skb; | |
4131 | ||
4132 | skb = skb_peek(&hdev->cmd_q); | |
4133 | if (!skb) | |
4134 | return true; | |
4135 | ||
44d27137 | 4136 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4137 | } |
4138 | ||
42c6b129 JH |
4139 | static void hci_resend_last(struct hci_dev *hdev) |
4140 | { | |
4141 | struct hci_command_hdr *sent; | |
4142 | struct sk_buff *skb; | |
4143 | u16 opcode; | |
4144 | ||
4145 | if (!hdev->sent_cmd) | |
4146 | return; | |
4147 | ||
4148 | sent = (void *) hdev->sent_cmd->data; | |
4149 | opcode = __le16_to_cpu(sent->opcode); | |
4150 | if (opcode == HCI_OP_RESET) | |
4151 | return; | |
4152 | ||
4153 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4154 | if (!skb) | |
4155 | return; | |
4156 | ||
4157 | skb_queue_head(&hdev->cmd_q, skb); | |
4158 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4159 | } | |
4160 | ||
e6214487 JH |
4161 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4162 | hci_req_complete_t *req_complete, | |
4163 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4164 | { |
9238f36a JH |
4165 | struct sk_buff *skb; |
4166 | unsigned long flags; | |
4167 | ||
4168 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4169 | ||
42c6b129 JH |
4170 | /* If the completed command doesn't match the last one that was |
4171 | * sent we need to do special handling of it. | |
9238f36a | 4172 | */ |
42c6b129 JH |
4173 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4174 | /* Some CSR based controllers generate a spontaneous | |
4175 | * reset complete event during init and any pending | |
4176 | * command will never be completed. In such a case we | |
4177 | * need to resend whatever was the last sent | |
4178 | * command. | |
4179 | */ | |
4180 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4181 | hci_resend_last(hdev); | |
4182 | ||
9238f36a | 4183 | return; |
42c6b129 | 4184 | } |
9238f36a JH |
4185 | |
4186 | /* If the command succeeded and there's still more commands in | |
4187 | * this request the request is not yet complete. | |
4188 | */ | |
4189 | if (!status && !hci_req_is_complete(hdev)) | |
4190 | return; | |
4191 | ||
4192 | /* If this was the last command in a request the complete | |
4193 | * callback would be found in hdev->sent_cmd instead of the | |
4194 | * command queue (hdev->cmd_q). | |
4195 | */ | |
44d27137 JH |
4196 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
4197 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
4198 | return; |
4199 | } | |
53e21fbc | 4200 | |
44d27137 JH |
4201 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4202 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 4203 | return; |
9238f36a JH |
4204 | } |
4205 | ||
4206 | /* Remove all pending commands belonging to this request */ | |
4207 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4208 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4209 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4210 | __skb_queue_head(&hdev->cmd_q, skb); |
4211 | break; | |
4212 | } | |
4213 | ||
3bd7594e DA |
4214 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
4215 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
4216 | else | |
4217 | *req_complete = bt_cb(skb)->hci.req_complete; | |
9238f36a JH |
4218 | kfree_skb(skb); |
4219 | } | |
4220 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4221 | } |
4222 | ||
b78752cc | 4223 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4224 | { |
b78752cc | 4225 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4226 | struct sk_buff *skb; |
4227 | ||
4228 | BT_DBG("%s", hdev->name); | |
4229 | ||
1da177e4 | 4230 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4231 | /* Send copy to monitor */ |
4232 | hci_send_to_monitor(hdev, skb); | |
4233 | ||
1da177e4 LT |
4234 | if (atomic_read(&hdev->promisc)) { |
4235 | /* Send copy to the sockets */ | |
470fe1b5 | 4236 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4237 | } |
4238 | ||
d7a5a11d | 4239 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4240 | kfree_skb(skb); |
4241 | continue; | |
4242 | } | |
4243 | ||
4244 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4245 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4246 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4247 | case HCI_ACLDATA_PKT: |
4248 | case HCI_SCODATA_PKT: | |
4249 | kfree_skb(skb); | |
4250 | continue; | |
3ff50b79 | 4251 | } |
1da177e4 LT |
4252 | } |
4253 | ||
4254 | /* Process frame */ | |
d79f34e3 | 4255 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4256 | case HCI_EVENT_PKT: |
b78752cc | 4257 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4258 | hci_event_packet(hdev, skb); |
4259 | break; | |
4260 | ||
4261 | case HCI_ACLDATA_PKT: | |
4262 | BT_DBG("%s ACL data packet", hdev->name); | |
4263 | hci_acldata_packet(hdev, skb); | |
4264 | break; | |
4265 | ||
4266 | case HCI_SCODATA_PKT: | |
4267 | BT_DBG("%s SCO data packet", hdev->name); | |
4268 | hci_scodata_packet(hdev, skb); | |
4269 | break; | |
4270 | ||
4271 | default: | |
4272 | kfree_skb(skb); | |
4273 | break; | |
4274 | } | |
4275 | } | |
1da177e4 LT |
4276 | } |
4277 | ||
c347b765 | 4278 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4279 | { |
c347b765 | 4280 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4281 | struct sk_buff *skb; |
4282 | ||
2104786b AE |
4283 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4284 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4285 | |
1da177e4 | 4286 | /* Send queued commands */ |
5a08ecce AE |
4287 | if (atomic_read(&hdev->cmd_cnt)) { |
4288 | skb = skb_dequeue(&hdev->cmd_q); | |
4289 | if (!skb) | |
4290 | return; | |
4291 | ||
7585b97a | 4292 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4293 | |
a675d7f1 | 4294 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4295 | if (hdev->sent_cmd) { |
1da177e4 | 4296 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4297 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4298 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4299 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4300 | else |
65cc2b49 MH |
4301 | schedule_delayed_work(&hdev->cmd_timer, |
4302 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4303 | } else { |
4304 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4305 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4306 | } |
4307 | } | |
4308 | } |