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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
7a0e5b15 | 33 | #include <linux/property.h> |
47219839 | 34 | #include <asm/unaligned.h> |
1da177e4 LT |
35 | |
36 | #include <net/bluetooth/bluetooth.h> | |
37 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 38 | #include <net/bluetooth/l2cap.h> |
af58925c | 39 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 40 | |
0857dd3b | 41 | #include "hci_request.h" |
60c5f5fb | 42 | #include "hci_debugfs.h" |
970c4e46 | 43 | #include "smp.h" |
6d5d2ee6 | 44 | #include "leds.h" |
970c4e46 | 45 | |
b78752cc | 46 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 47 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 48 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 49 | |
1da177e4 LT |
50 | /* HCI device list */ |
51 | LIST_HEAD(hci_dev_list); | |
52 | DEFINE_RWLOCK(hci_dev_list_lock); | |
53 | ||
54 | /* HCI callback list */ | |
55 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 56 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 57 | |
3df92b31 SL |
58 | /* HCI ID Numbering */ |
59 | static DEFINE_IDA(hci_index_ida); | |
60 | ||
baf27f6e MH |
61 | /* ---- HCI debugfs entries ---- */ |
62 | ||
4b4148e9 MH |
63 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
64 | size_t count, loff_t *ppos) | |
65 | { | |
66 | struct hci_dev *hdev = file->private_data; | |
67 | char buf[3]; | |
68 | ||
74b93e9f | 69 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; |
4b4148e9 MH |
70 | buf[1] = '\n'; |
71 | buf[2] = '\0'; | |
72 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
73 | } | |
74 | ||
75 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
76 | size_t count, loff_t *ppos) | |
77 | { | |
78 | struct hci_dev *hdev = file->private_data; | |
79 | struct sk_buff *skb; | |
4b4148e9 | 80 | bool enable; |
3bf5e97d | 81 | int err; |
4b4148e9 MH |
82 | |
83 | if (!test_bit(HCI_UP, &hdev->flags)) | |
84 | return -ENETDOWN; | |
85 | ||
3bf5e97d AS |
86 | err = kstrtobool_from_user(user_buf, count, &enable); |
87 | if (err) | |
88 | return err; | |
4b4148e9 | 89 | |
b7cb93e5 | 90 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
91 | return -EALREADY; |
92 | ||
b504430c | 93 | hci_req_sync_lock(hdev); |
4b4148e9 MH |
94 | if (enable) |
95 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
96 | HCI_CMD_TIMEOUT); | |
97 | else | |
98 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
99 | HCI_CMD_TIMEOUT); | |
b504430c | 100 | hci_req_sync_unlock(hdev); |
4b4148e9 MH |
101 | |
102 | if (IS_ERR(skb)) | |
103 | return PTR_ERR(skb); | |
104 | ||
4b4148e9 MH |
105 | kfree_skb(skb); |
106 | ||
b7cb93e5 | 107 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
108 | |
109 | return count; | |
110 | } | |
111 | ||
112 | static const struct file_operations dut_mode_fops = { | |
113 | .open = simple_open, | |
114 | .read = dut_mode_read, | |
115 | .write = dut_mode_write, | |
116 | .llseek = default_llseek, | |
117 | }; | |
118 | ||
4b4113d6 MH |
119 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
120 | size_t count, loff_t *ppos) | |
121 | { | |
122 | struct hci_dev *hdev = file->private_data; | |
123 | char buf[3]; | |
124 | ||
74b93e9f | 125 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; |
4b4113d6 MH |
126 | buf[1] = '\n'; |
127 | buf[2] = '\0'; | |
128 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
129 | } | |
130 | ||
131 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
132 | size_t count, loff_t *ppos) | |
133 | { | |
134 | struct hci_dev *hdev = file->private_data; | |
4b4113d6 MH |
135 | bool enable; |
136 | int err; | |
137 | ||
3bf5e97d AS |
138 | err = kstrtobool_from_user(user_buf, count, &enable); |
139 | if (err) | |
140 | return err; | |
4b4113d6 | 141 | |
7e995b9e | 142 | /* When the diagnostic flags are not persistent and the transport |
b56c7b25 MH |
143 | * is not active or in user channel operation, then there is no need |
144 | * for the vendor callback. Instead just store the desired value and | |
145 | * the setting will be programmed when the controller gets powered on. | |
7e995b9e MH |
146 | */ |
147 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
b56c7b25 MH |
148 | (!test_bit(HCI_RUNNING, &hdev->flags) || |
149 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL))) | |
7e995b9e MH |
150 | goto done; |
151 | ||
b504430c | 152 | hci_req_sync_lock(hdev); |
4b4113d6 | 153 | err = hdev->set_diag(hdev, enable); |
b504430c | 154 | hci_req_sync_unlock(hdev); |
4b4113d6 MH |
155 | |
156 | if (err < 0) | |
157 | return err; | |
158 | ||
7e995b9e | 159 | done: |
4b4113d6 MH |
160 | if (enable) |
161 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
162 | else | |
163 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
164 | ||
165 | return count; | |
166 | } | |
167 | ||
168 | static const struct file_operations vendor_diag_fops = { | |
169 | .open = simple_open, | |
170 | .read = vendor_diag_read, | |
171 | .write = vendor_diag_write, | |
172 | .llseek = default_llseek, | |
173 | }; | |
174 | ||
f640ee98 MH |
175 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
176 | { | |
177 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
178 | &dut_mode_fops); | |
179 | ||
180 | if (hdev->set_diag) | |
181 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
182 | &vendor_diag_fops); | |
183 | } | |
184 | ||
a1d01db1 | 185 | static int hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 186 | { |
42c6b129 | 187 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
188 | |
189 | /* Reset device */ | |
42c6b129 JH |
190 | set_bit(HCI_RESET, &req->hdev->flags); |
191 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
a1d01db1 | 192 | return 0; |
1da177e4 LT |
193 | } |
194 | ||
42c6b129 | 195 | static void bredr_init(struct hci_request *req) |
1da177e4 | 196 | { |
42c6b129 | 197 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 198 | |
1da177e4 | 199 | /* Read Local Supported Features */ |
42c6b129 | 200 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 201 | |
1143e5a6 | 202 | /* Read Local Version */ |
42c6b129 | 203 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
204 | |
205 | /* Read BD Address */ | |
42c6b129 | 206 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
207 | } |
208 | ||
0af801b9 | 209 | static void amp_init1(struct hci_request *req) |
e61ef499 | 210 | { |
42c6b129 | 211 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 212 | |
e61ef499 | 213 | /* Read Local Version */ |
42c6b129 | 214 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 215 | |
f6996cfe MH |
216 | /* Read Local Supported Commands */ |
217 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
218 | ||
6bcbc489 | 219 | /* Read Local AMP Info */ |
42c6b129 | 220 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
221 | |
222 | /* Read Data Blk size */ | |
42c6b129 | 223 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 224 | |
f38ba941 MH |
225 | /* Read Flow Control Mode */ |
226 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
227 | ||
7528ca1c MH |
228 | /* Read Location Data */ |
229 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
230 | } |
231 | ||
a1d01db1 | 232 | static int amp_init2(struct hci_request *req) |
0af801b9 JH |
233 | { |
234 | /* Read Local Supported Features. Not all AMP controllers | |
235 | * support this so it's placed conditionally in the second | |
236 | * stage init. | |
237 | */ | |
238 | if (req->hdev->commands[14] & 0x20) | |
239 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
a1d01db1 JH |
240 | |
241 | return 0; | |
0af801b9 JH |
242 | } |
243 | ||
a1d01db1 | 244 | static int hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 245 | { |
42c6b129 | 246 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
247 | |
248 | BT_DBG("%s %ld", hdev->name, opt); | |
249 | ||
11778716 AE |
250 | /* Reset */ |
251 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 252 | hci_reset_req(req, 0); |
11778716 | 253 | |
e61ef499 | 254 | switch (hdev->dev_type) { |
ca8bee5d | 255 | case HCI_PRIMARY: |
42c6b129 | 256 | bredr_init(req); |
e61ef499 | 257 | break; |
e61ef499 | 258 | case HCI_AMP: |
0af801b9 | 259 | amp_init1(req); |
e61ef499 | 260 | break; |
e61ef499 | 261 | default: |
2064ee33 | 262 | bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type); |
e61ef499 AE |
263 | break; |
264 | } | |
a1d01db1 JH |
265 | |
266 | return 0; | |
e61ef499 AE |
267 | } |
268 | ||
42c6b129 | 269 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 270 | { |
2177bab5 JH |
271 | __le16 param; |
272 | __u8 flt_type; | |
273 | ||
274 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 275 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
276 | |
277 | /* Read Class of Device */ | |
42c6b129 | 278 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
279 | |
280 | /* Read Local Name */ | |
42c6b129 | 281 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
282 | |
283 | /* Read Voice Setting */ | |
42c6b129 | 284 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 285 | |
b4cb9fb2 MH |
286 | /* Read Number of Supported IAC */ |
287 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
288 | ||
4b836f39 MH |
289 | /* Read Current IAC LAP */ |
290 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
291 | ||
2177bab5 JH |
292 | /* Clear Event Filters */ |
293 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 294 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
295 | |
296 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 297 | param = cpu_to_le16(0x7d00); |
42c6b129 | 298 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
299 | } |
300 | ||
42c6b129 | 301 | static void le_setup(struct hci_request *req) |
2177bab5 | 302 | { |
c73eee91 JH |
303 | struct hci_dev *hdev = req->hdev; |
304 | ||
2177bab5 | 305 | /* Read LE Buffer Size */ |
42c6b129 | 306 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
307 | |
308 | /* Read LE Local Supported Features */ | |
42c6b129 | 309 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 310 | |
747d3f03 MH |
311 | /* Read LE Supported States */ |
312 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
313 | ||
c73eee91 JH |
314 | /* LE-only controllers have LE implicitly enabled */ |
315 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 316 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
317 | } |
318 | ||
42c6b129 | 319 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 320 | { |
42c6b129 JH |
321 | struct hci_dev *hdev = req->hdev; |
322 | ||
2177bab5 JH |
323 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
324 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
325 | * command otherwise. | |
326 | */ | |
327 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
328 | ||
329 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
330 | * any event mask for pre 1.2 devices. | |
331 | */ | |
332 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
333 | return; | |
334 | ||
335 | if (lmp_bredr_capable(hdev)) { | |
336 | events[4] |= 0x01; /* Flow Specification Complete */ | |
c7882cbd MH |
337 | } else { |
338 | /* Use a different default for LE-only devices */ | |
339 | memset(events, 0, sizeof(events)); | |
c7882cbd MH |
340 | events[1] |= 0x20; /* Command Complete */ |
341 | events[1] |= 0x40; /* Command Status */ | |
342 | events[1] |= 0x80; /* Hardware Error */ | |
5c3d3b4c MH |
343 | |
344 | /* If the controller supports the Disconnect command, enable | |
345 | * the corresponding event. In addition enable packet flow | |
346 | * control related events. | |
347 | */ | |
348 | if (hdev->commands[0] & 0x20) { | |
349 | events[0] |= 0x10; /* Disconnection Complete */ | |
350 | events[2] |= 0x04; /* Number of Completed Packets */ | |
351 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
352 | } | |
353 | ||
354 | /* If the controller supports the Read Remote Version | |
355 | * Information command, enable the corresponding event. | |
356 | */ | |
357 | if (hdev->commands[2] & 0x80) | |
358 | events[1] |= 0x08; /* Read Remote Version Information | |
359 | * Complete | |
360 | */ | |
0da71f1b MH |
361 | |
362 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
363 | events[0] |= 0x80; /* Encryption Change */ | |
364 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
365 | } | |
2177bab5 JH |
366 | } |
367 | ||
9fe759ce MH |
368 | if (lmp_inq_rssi_capable(hdev) || |
369 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2177bab5 JH |
370 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
371 | ||
70f56aa2 MH |
372 | if (lmp_ext_feat_capable(hdev)) |
373 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
374 | ||
375 | if (lmp_esco_capable(hdev)) { | |
376 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
377 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
378 | } | |
379 | ||
2177bab5 JH |
380 | if (lmp_sniffsubr_capable(hdev)) |
381 | events[5] |= 0x20; /* Sniff Subrating */ | |
382 | ||
383 | if (lmp_pause_enc_capable(hdev)) | |
384 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
385 | ||
386 | if (lmp_ext_inq_capable(hdev)) | |
387 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
388 | ||
389 | if (lmp_no_flush_capable(hdev)) | |
390 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
391 | ||
392 | if (lmp_lsto_capable(hdev)) | |
393 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
394 | ||
395 | if (lmp_ssp_capable(hdev)) { | |
396 | events[6] |= 0x01; /* IO Capability Request */ | |
397 | events[6] |= 0x02; /* IO Capability Response */ | |
398 | events[6] |= 0x04; /* User Confirmation Request */ | |
399 | events[6] |= 0x08; /* User Passkey Request */ | |
400 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
401 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
402 | events[7] |= 0x04; /* User Passkey Notification */ | |
403 | events[7] |= 0x08; /* Keypress Notification */ | |
404 | events[7] |= 0x10; /* Remote Host Supported | |
405 | * Features Notification | |
406 | */ | |
407 | } | |
408 | ||
409 | if (lmp_le_capable(hdev)) | |
410 | events[7] |= 0x20; /* LE Meta-Event */ | |
411 | ||
42c6b129 | 412 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
413 | } |
414 | ||
a1d01db1 | 415 | static int hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 416 | { |
42c6b129 JH |
417 | struct hci_dev *hdev = req->hdev; |
418 | ||
0af801b9 JH |
419 | if (hdev->dev_type == HCI_AMP) |
420 | return amp_init2(req); | |
421 | ||
2177bab5 | 422 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 423 | bredr_setup(req); |
56f87901 | 424 | else |
a358dc11 | 425 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
426 | |
427 | if (lmp_le_capable(hdev)) | |
42c6b129 | 428 | le_setup(req); |
2177bab5 | 429 | |
0f3adeae MH |
430 | /* All Bluetooth 1.2 and later controllers should support the |
431 | * HCI command for reading the local supported commands. | |
432 | * | |
433 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
434 | * but do not have support for this command. If that is the case, | |
435 | * the driver can quirk the behavior and skip reading the local | |
436 | * supported commands. | |
3f8e2d75 | 437 | */ |
0f3adeae MH |
438 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
439 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 440 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
441 | |
442 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
443 | /* When SSP is available, then the host features page |
444 | * should also be available as well. However some | |
445 | * controllers list the max_page as 0 as long as SSP | |
446 | * has not been enabled. To achieve proper debugging | |
447 | * output, force the minimum max_page to 1 at least. | |
448 | */ | |
449 | hdev->max_page = 0x01; | |
450 | ||
d7a5a11d | 451 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 452 | u8 mode = 0x01; |
574ea3c7 | 453 | |
42c6b129 JH |
454 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
455 | sizeof(mode), &mode); | |
2177bab5 JH |
456 | } else { |
457 | struct hci_cp_write_eir cp; | |
458 | ||
459 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
460 | memset(&cp, 0, sizeof(cp)); | |
461 | ||
42c6b129 | 462 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
463 | } |
464 | } | |
465 | ||
043ec9bf MH |
466 | if (lmp_inq_rssi_capable(hdev) || |
467 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
468 | u8 mode; |
469 | ||
470 | /* If Extended Inquiry Result events are supported, then | |
471 | * they are clearly preferred over Inquiry Result with RSSI | |
472 | * events. | |
473 | */ | |
474 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
475 | ||
476 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
477 | } | |
2177bab5 JH |
478 | |
479 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 480 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
481 | |
482 | if (lmp_ext_feat_capable(hdev)) { | |
483 | struct hci_cp_read_local_ext_features cp; | |
484 | ||
485 | cp.page = 0x01; | |
42c6b129 JH |
486 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
487 | sizeof(cp), &cp); | |
2177bab5 JH |
488 | } |
489 | ||
d7a5a11d | 490 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 491 | u8 enable = 1; |
42c6b129 JH |
492 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
493 | &enable); | |
2177bab5 | 494 | } |
a1d01db1 JH |
495 | |
496 | return 0; | |
2177bab5 JH |
497 | } |
498 | ||
42c6b129 | 499 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 500 | { |
42c6b129 | 501 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
502 | struct hci_cp_write_def_link_policy cp; |
503 | u16 link_policy = 0; | |
504 | ||
505 | if (lmp_rswitch_capable(hdev)) | |
506 | link_policy |= HCI_LP_RSWITCH; | |
507 | if (lmp_hold_capable(hdev)) | |
508 | link_policy |= HCI_LP_HOLD; | |
509 | if (lmp_sniff_capable(hdev)) | |
510 | link_policy |= HCI_LP_SNIFF; | |
511 | if (lmp_park_capable(hdev)) | |
512 | link_policy |= HCI_LP_PARK; | |
513 | ||
514 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 515 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
516 | } |
517 | ||
42c6b129 | 518 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 519 | { |
42c6b129 | 520 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
521 | struct hci_cp_write_le_host_supported cp; |
522 | ||
c73eee91 JH |
523 | /* LE-only devices do not support explicit enablement */ |
524 | if (!lmp_bredr_capable(hdev)) | |
525 | return; | |
526 | ||
2177bab5 JH |
527 | memset(&cp, 0, sizeof(cp)); |
528 | ||
d7a5a11d | 529 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 530 | cp.le = 0x01; |
32226e4f | 531 | cp.simul = 0x00; |
2177bab5 JH |
532 | } |
533 | ||
534 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
535 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
536 | &cp); | |
2177bab5 JH |
537 | } |
538 | ||
d62e6d67 JH |
539 | static void hci_set_event_mask_page_2(struct hci_request *req) |
540 | { | |
541 | struct hci_dev *hdev = req->hdev; | |
542 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
313f6888 | 543 | bool changed = false; |
d62e6d67 JH |
544 | |
545 | /* If Connectionless Slave Broadcast master role is supported | |
546 | * enable all necessary events for it. | |
547 | */ | |
53b834d2 | 548 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
549 | events[1] |= 0x40; /* Triggered Clock Capture */ |
550 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
551 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
552 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
313f6888 | 553 | changed = true; |
d62e6d67 JH |
554 | } |
555 | ||
556 | /* If Connectionless Slave Broadcast slave role is supported | |
557 | * enable all necessary events for it. | |
558 | */ | |
53b834d2 | 559 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
560 | events[2] |= 0x01; /* Synchronization Train Received */ |
561 | events[2] |= 0x02; /* CSB Receive */ | |
562 | events[2] |= 0x04; /* CSB Timeout */ | |
563 | events[2] |= 0x08; /* Truncated Page Complete */ | |
313f6888 | 564 | changed = true; |
d62e6d67 JH |
565 | } |
566 | ||
40c59fcb | 567 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
313f6888 | 568 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) { |
40c59fcb | 569 | events[2] |= 0x80; |
313f6888 MH |
570 | changed = true; |
571 | } | |
40c59fcb | 572 | |
313f6888 MH |
573 | /* Some Broadcom based controllers indicate support for Set Event |
574 | * Mask Page 2 command, but then actually do not support it. Since | |
575 | * the default value is all bits set to zero, the command is only | |
576 | * required if the event mask has to be changed. In case no change | |
577 | * to the event mask is needed, skip this command. | |
578 | */ | |
579 | if (changed) | |
580 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, | |
581 | sizeof(events), events); | |
d62e6d67 JH |
582 | } |
583 | ||
a1d01db1 | 584 | static int hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 585 | { |
42c6b129 | 586 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 587 | u8 p; |
42c6b129 | 588 | |
0da71f1b MH |
589 | hci_setup_event_mask(req); |
590 | ||
e81be90b JH |
591 | if (hdev->commands[6] & 0x20 && |
592 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
593 | struct hci_cp_read_stored_link_key cp; |
594 | ||
595 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
596 | cp.read_all = 0x01; | |
597 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
598 | } | |
599 | ||
2177bab5 | 600 | if (hdev->commands[5] & 0x10) |
42c6b129 | 601 | hci_setup_link_policy(req); |
2177bab5 | 602 | |
417287de MH |
603 | if (hdev->commands[8] & 0x01) |
604 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
605 | ||
606 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
607 | * support the Read Page Scan Type command. Check support for | |
608 | * this command in the bit mask of supported commands. | |
609 | */ | |
610 | if (hdev->commands[13] & 0x01) | |
611 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
612 | ||
9193c6e8 AG |
613 | if (lmp_le_capable(hdev)) { |
614 | u8 events[8]; | |
615 | ||
616 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
617 | |
618 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
619 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
620 | |
621 | /* If controller supports the Connection Parameters Request | |
622 | * Link Layer Procedure, enable the corresponding event. | |
623 | */ | |
624 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
625 | events[0] |= 0x20; /* LE Remote Connection | |
626 | * Parameter Request | |
627 | */ | |
628 | ||
a9f6068e MH |
629 | /* If the controller supports the Data Length Extension |
630 | * feature, enable the corresponding event. | |
631 | */ | |
632 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
633 | events[0] |= 0x40; /* LE Data Length Change */ | |
634 | ||
4b71bba4 MH |
635 | /* If the controller supports Extended Scanner Filter |
636 | * Policies, enable the correspondig event. | |
637 | */ | |
638 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
639 | events[1] |= 0x04; /* LE Direct Advertising | |
640 | * Report | |
641 | */ | |
642 | ||
9756d33b MH |
643 | /* If the controller supports Channel Selection Algorithm #2 |
644 | * feature, enable the corresponding event. | |
645 | */ | |
646 | if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2) | |
647 | events[2] |= 0x08; /* LE Channel Selection | |
648 | * Algorithm | |
649 | */ | |
650 | ||
7d26f5c4 MH |
651 | /* If the controller supports the LE Set Scan Enable command, |
652 | * enable the corresponding advertising report event. | |
653 | */ | |
654 | if (hdev->commands[26] & 0x08) | |
655 | events[0] |= 0x02; /* LE Advertising Report */ | |
656 | ||
657 | /* If the controller supports the LE Create Connection | |
658 | * command, enable the corresponding event. | |
659 | */ | |
660 | if (hdev->commands[26] & 0x10) | |
661 | events[0] |= 0x01; /* LE Connection Complete */ | |
662 | ||
663 | /* If the controller supports the LE Connection Update | |
664 | * command, enable the corresponding event. | |
665 | */ | |
666 | if (hdev->commands[27] & 0x04) | |
667 | events[0] |= 0x04; /* LE Connection Update | |
668 | * Complete | |
669 | */ | |
670 | ||
671 | /* If the controller supports the LE Read Remote Used Features | |
672 | * command, enable the corresponding event. | |
673 | */ | |
674 | if (hdev->commands[27] & 0x20) | |
675 | events[0] |= 0x08; /* LE Read Remote Used | |
676 | * Features Complete | |
677 | */ | |
678 | ||
5a34bd5f MH |
679 | /* If the controller supports the LE Read Local P-256 |
680 | * Public Key command, enable the corresponding event. | |
681 | */ | |
682 | if (hdev->commands[34] & 0x02) | |
683 | events[0] |= 0x80; /* LE Read Local P-256 | |
684 | * Public Key Complete | |
685 | */ | |
686 | ||
687 | /* If the controller supports the LE Generate DHKey | |
688 | * command, enable the corresponding event. | |
689 | */ | |
690 | if (hdev->commands[34] & 0x04) | |
691 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
692 | ||
27bbca44 MH |
693 | /* If the controller supports the LE Set Default PHY or |
694 | * LE Set PHY commands, enable the corresponding event. | |
695 | */ | |
696 | if (hdev->commands[35] & (0x20 | 0x40)) | |
697 | events[1] |= 0x08; /* LE PHY Update Complete */ | |
698 | ||
c215e939 JK |
699 | /* If the controller supports LE Set Extended Scan Parameters |
700 | * and LE Set Extended Scan Enable commands, enable the | |
701 | * corresponding event. | |
702 | */ | |
703 | if (use_ext_scan(hdev)) | |
704 | events[1] |= 0x10; /* LE Extended Advertising | |
705 | * Report | |
706 | */ | |
707 | ||
4d94f95d JK |
708 | /* If the controller supports the LE Extended Create Connection |
709 | * command, enable the corresponding event. | |
710 | */ | |
711 | if (use_ext_conn(hdev)) | |
712 | events[1] |= 0x02; /* LE Enhanced Connection | |
713 | * Complete | |
714 | */ | |
715 | ||
acf0aeae JK |
716 | /* If the controller supports the LE Extended Advertising |
717 | * command, enable the corresponding event. | |
718 | */ | |
719 | if (ext_adv_capable(hdev)) | |
720 | events[2] |= 0x02; /* LE Advertising Set | |
721 | * Terminated | |
722 | */ | |
723 | ||
9193c6e8 AG |
724 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
725 | events); | |
726 | ||
6b49bcb4 JK |
727 | /* Read LE Advertising Channel TX Power */ |
728 | if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) { | |
729 | /* HCI TS spec forbids mixing of legacy and extended | |
730 | * advertising commands wherein READ_ADV_TX_POWER is | |
731 | * also included. So do not call it if extended adv | |
732 | * is supported otherwise controller will return | |
733 | * COMMAND_DISALLOWED for extended commands. | |
734 | */ | |
15a49cca MH |
735 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
736 | } | |
737 | ||
2ab216a7 MH |
738 | if (hdev->commands[26] & 0x40) { |
739 | /* Read LE White List Size */ | |
740 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, | |
741 | 0, NULL); | |
742 | } | |
743 | ||
744 | if (hdev->commands[26] & 0x80) { | |
745 | /* Clear LE White List */ | |
746 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
747 | } | |
748 | ||
cfdb0c2d AN |
749 | if (hdev->commands[34] & 0x40) { |
750 | /* Read LE Resolving List Size */ | |
751 | hci_req_add(req, HCI_OP_LE_READ_RESOLV_LIST_SIZE, | |
752 | 0, NULL); | |
753 | } | |
754 | ||
545f2596 AN |
755 | if (hdev->commands[34] & 0x20) { |
756 | /* Clear LE Resolving List */ | |
757 | hci_req_add(req, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL); | |
758 | } | |
759 | ||
a9f6068e MH |
760 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
761 | /* Read LE Maximum Data Length */ | |
762 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
763 | ||
764 | /* Read LE Suggested Default Data Length */ | |
765 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
766 | } | |
767 | ||
6b49bcb4 JK |
768 | if (ext_adv_capable(hdev)) { |
769 | /* Read LE Number of Supported Advertising Sets */ | |
770 | hci_req_add(req, HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, | |
771 | 0, NULL); | |
772 | } | |
773 | ||
42c6b129 | 774 | hci_set_le_support(req); |
9193c6e8 | 775 | } |
d2c5d77f JH |
776 | |
777 | /* Read features beyond page 1 if available */ | |
778 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
779 | struct hci_cp_read_local_ext_features cp; | |
780 | ||
781 | cp.page = p; | |
782 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
783 | sizeof(cp), &cp); | |
784 | } | |
a1d01db1 JH |
785 | |
786 | return 0; | |
2177bab5 JH |
787 | } |
788 | ||
a1d01db1 | 789 | static int hci_init4_req(struct hci_request *req, unsigned long opt) |
5d4e7e8d JH |
790 | { |
791 | struct hci_dev *hdev = req->hdev; | |
792 | ||
36f260ce MH |
793 | /* Some Broadcom based Bluetooth controllers do not support the |
794 | * Delete Stored Link Key command. They are clearly indicating its | |
795 | * absence in the bit mask of supported commands. | |
796 | * | |
797 | * Check the supported commands and only if the the command is marked | |
798 | * as supported send it. If not supported assume that the controller | |
799 | * does not have actual support for stored link keys which makes this | |
800 | * command redundant anyway. | |
801 | * | |
802 | * Some controllers indicate that they support handling deleting | |
803 | * stored link keys, but they don't. The quirk lets a driver | |
804 | * just disable this command. | |
805 | */ | |
806 | if (hdev->commands[6] & 0x80 && | |
807 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
808 | struct hci_cp_delete_stored_link_key cp; | |
809 | ||
810 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
811 | cp.delete_all = 0x01; | |
812 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
813 | sizeof(cp), &cp); | |
814 | } | |
815 | ||
d62e6d67 JH |
816 | /* Set event mask page 2 if the HCI command for it is supported */ |
817 | if (hdev->commands[22] & 0x04) | |
818 | hci_set_event_mask_page_2(req); | |
819 | ||
109e3191 MH |
820 | /* Read local codec list if the HCI command is supported */ |
821 | if (hdev->commands[29] & 0x20) | |
822 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
823 | ||
f4fe73ed MH |
824 | /* Get MWS transport configuration if the HCI command is supported */ |
825 | if (hdev->commands[30] & 0x08) | |
826 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
827 | ||
5d4e7e8d | 828 | /* Check for Synchronization Train support */ |
53b834d2 | 829 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 830 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
831 | |
832 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 833 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 834 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 835 | u8 support = 0x01; |
574ea3c7 | 836 | |
a6d0d690 MH |
837 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
838 | sizeof(support), &support); | |
839 | } | |
a1d01db1 | 840 | |
12204875 MH |
841 | /* Set Suggested Default Data Length to maximum if supported */ |
842 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { | |
843 | struct hci_cp_le_write_def_data_len cp; | |
844 | ||
c1d98970 BDC |
845 | cp.tx_len = cpu_to_le16(hdev->le_max_tx_len); |
846 | cp.tx_time = cpu_to_le16(hdev->le_max_tx_time); | |
12204875 MH |
847 | hci_req_add(req, HCI_OP_LE_WRITE_DEF_DATA_LEN, sizeof(cp), &cp); |
848 | } | |
849 | ||
de2ba303 MH |
850 | /* Set Default PHY parameters if command is supported */ |
851 | if (hdev->commands[35] & 0x20) { | |
852 | struct hci_cp_le_set_default_phy cp; | |
853 | ||
6decb5b4 JK |
854 | cp.all_phys = 0x00; |
855 | cp.tx_phys = hdev->le_tx_def_phys; | |
856 | cp.rx_phys = hdev->le_rx_def_phys; | |
de2ba303 MH |
857 | |
858 | hci_req_add(req, HCI_OP_LE_SET_DEFAULT_PHY, sizeof(cp), &cp); | |
859 | } | |
860 | ||
a1d01db1 | 861 | return 0; |
5d4e7e8d JH |
862 | } |
863 | ||
2177bab5 JH |
864 | static int __hci_init(struct hci_dev *hdev) |
865 | { | |
866 | int err; | |
867 | ||
4ebeee2d | 868 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL); |
2177bab5 JH |
869 | if (err < 0) |
870 | return err; | |
871 | ||
f640ee98 MH |
872 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
873 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 874 | |
4ebeee2d | 875 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL); |
0af801b9 JH |
876 | if (err < 0) |
877 | return err; | |
878 | ||
ca8bee5d | 879 | /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode |
2177bab5 | 880 | * BR/EDR/LE type controllers. AMP controllers only need the |
0af801b9 | 881 | * first two stages of init. |
2177bab5 | 882 | */ |
ca8bee5d | 883 | if (hdev->dev_type != HCI_PRIMARY) |
2177bab5 JH |
884 | return 0; |
885 | ||
4ebeee2d | 886 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL); |
5d4e7e8d JH |
887 | if (err < 0) |
888 | return err; | |
889 | ||
4ebeee2d | 890 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL); |
baf27f6e MH |
891 | if (err < 0) |
892 | return err; | |
893 | ||
ec6cef9c MH |
894 | /* This function is only called when the controller is actually in |
895 | * configured state. When the controller is marked as unconfigured, | |
896 | * this initialization procedure is not run. | |
897 | * | |
898 | * It means that it is possible that a controller runs through its | |
899 | * setup phase and then discovers missing settings. If that is the | |
900 | * case, then this function will not be called. It then will only | |
901 | * be called during the config phase. | |
902 | * | |
903 | * So only when in setup phase or config phase, create the debugfs | |
904 | * entries and register the SMP channels. | |
baf27f6e | 905 | */ |
d7a5a11d MH |
906 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
907 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
908 | return 0; |
909 | ||
60c5f5fb MH |
910 | hci_debugfs_create_common(hdev); |
911 | ||
71c3b60e | 912 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 913 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 914 | |
162a3bac | 915 | if (lmp_le_capable(hdev)) |
60c5f5fb | 916 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 917 | |
baf27f6e | 918 | return 0; |
2177bab5 JH |
919 | } |
920 | ||
a1d01db1 | 921 | static int hci_init0_req(struct hci_request *req, unsigned long opt) |
0ebca7d6 MH |
922 | { |
923 | struct hci_dev *hdev = req->hdev; | |
924 | ||
925 | BT_DBG("%s %ld", hdev->name, opt); | |
926 | ||
927 | /* Reset */ | |
928 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
929 | hci_reset_req(req, 0); | |
930 | ||
931 | /* Read Local Version */ | |
932 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
933 | ||
934 | /* Read BD Address */ | |
935 | if (hdev->set_bdaddr) | |
936 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
a1d01db1 JH |
937 | |
938 | return 0; | |
0ebca7d6 MH |
939 | } |
940 | ||
941 | static int __hci_unconf_init(struct hci_dev *hdev) | |
942 | { | |
943 | int err; | |
944 | ||
cc78b44b MH |
945 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
946 | return 0; | |
947 | ||
4ebeee2d | 948 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL); |
0ebca7d6 MH |
949 | if (err < 0) |
950 | return err; | |
951 | ||
f640ee98 MH |
952 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
953 | hci_debugfs_create_basic(hdev); | |
954 | ||
0ebca7d6 MH |
955 | return 0; |
956 | } | |
957 | ||
a1d01db1 | 958 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
959 | { |
960 | __u8 scan = opt; | |
961 | ||
42c6b129 | 962 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
963 | |
964 | /* Inquiry and Page scans */ | |
42c6b129 | 965 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 966 | return 0; |
1da177e4 LT |
967 | } |
968 | ||
a1d01db1 | 969 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
970 | { |
971 | __u8 auth = opt; | |
972 | ||
42c6b129 | 973 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
974 | |
975 | /* Authentication */ | |
42c6b129 | 976 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 977 | return 0; |
1da177e4 LT |
978 | } |
979 | ||
a1d01db1 | 980 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
981 | { |
982 | __u8 encrypt = opt; | |
983 | ||
42c6b129 | 984 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 985 | |
e4e8e37c | 986 | /* Encryption */ |
42c6b129 | 987 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 988 | return 0; |
1da177e4 LT |
989 | } |
990 | ||
a1d01db1 | 991 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
992 | { |
993 | __le16 policy = cpu_to_le16(opt); | |
994 | ||
42c6b129 | 995 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
996 | |
997 | /* Default link policy */ | |
42c6b129 | 998 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 999 | return 0; |
e4e8e37c MH |
1000 | } |
1001 | ||
8e87d142 | 1002 | /* Get HCI device by index. |
1da177e4 LT |
1003 | * Device is held on return. */ |
1004 | struct hci_dev *hci_dev_get(int index) | |
1005 | { | |
8035ded4 | 1006 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1007 | |
1008 | BT_DBG("%d", index); | |
1009 | ||
1010 | if (index < 0) | |
1011 | return NULL; | |
1012 | ||
1013 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1014 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1015 | if (d->id == index) { |
1016 | hdev = hci_dev_hold(d); | |
1017 | break; | |
1018 | } | |
1019 | } | |
1020 | read_unlock(&hci_dev_list_lock); | |
1021 | return hdev; | |
1022 | } | |
1da177e4 LT |
1023 | |
1024 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1025 | |
30dc78e1 JH |
1026 | bool hci_discovery_active(struct hci_dev *hdev) |
1027 | { | |
1028 | struct discovery_state *discov = &hdev->discovery; | |
1029 | ||
6fbe195d | 1030 | switch (discov->state) { |
343f935b | 1031 | case DISCOVERY_FINDING: |
6fbe195d | 1032 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1033 | return true; |
1034 | ||
6fbe195d AG |
1035 | default: |
1036 | return false; | |
1037 | } | |
30dc78e1 JH |
1038 | } |
1039 | ||
ff9ef578 JH |
1040 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1041 | { | |
bb3e0a33 JH |
1042 | int old_state = hdev->discovery.state; |
1043 | ||
ff9ef578 JH |
1044 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1045 | ||
bb3e0a33 | 1046 | if (old_state == state) |
ff9ef578 JH |
1047 | return; |
1048 | ||
bb3e0a33 JH |
1049 | hdev->discovery.state = state; |
1050 | ||
ff9ef578 JH |
1051 | switch (state) { |
1052 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1053 | hci_update_background_scan(hdev); |
1054 | ||
bb3e0a33 | 1055 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1056 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1057 | break; |
1058 | case DISCOVERY_STARTING: | |
1059 | break; | |
343f935b | 1060 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1061 | mgmt_discovering(hdev, 1); |
1062 | break; | |
30dc78e1 JH |
1063 | case DISCOVERY_RESOLVING: |
1064 | break; | |
ff9ef578 JH |
1065 | case DISCOVERY_STOPPING: |
1066 | break; | |
1067 | } | |
ff9ef578 JH |
1068 | } |
1069 | ||
1f9b9a5d | 1070 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1071 | { |
30883512 | 1072 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1073 | struct inquiry_entry *p, *n; |
1da177e4 | 1074 | |
561aafbc JH |
1075 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1076 | list_del(&p->all); | |
b57c1a56 | 1077 | kfree(p); |
1da177e4 | 1078 | } |
561aafbc JH |
1079 | |
1080 | INIT_LIST_HEAD(&cache->unknown); | |
1081 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1082 | } |
1083 | ||
a8c5fb1a GP |
1084 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1085 | bdaddr_t *bdaddr) | |
1da177e4 | 1086 | { |
30883512 | 1087 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1088 | struct inquiry_entry *e; |
1089 | ||
6ed93dc6 | 1090 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1091 | |
561aafbc JH |
1092 | list_for_each_entry(e, &cache->all, all) { |
1093 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1094 | return e; | |
1095 | } | |
1096 | ||
1097 | return NULL; | |
1098 | } | |
1099 | ||
1100 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1101 | bdaddr_t *bdaddr) |
561aafbc | 1102 | { |
30883512 | 1103 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1104 | struct inquiry_entry *e; |
1105 | ||
6ed93dc6 | 1106 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1107 | |
1108 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1109 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1110 | return e; |
1111 | } | |
1112 | ||
1113 | return NULL; | |
1da177e4 LT |
1114 | } |
1115 | ||
30dc78e1 | 1116 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1117 | bdaddr_t *bdaddr, |
1118 | int state) | |
30dc78e1 JH |
1119 | { |
1120 | struct discovery_state *cache = &hdev->discovery; | |
1121 | struct inquiry_entry *e; | |
1122 | ||
6ed93dc6 | 1123 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1124 | |
1125 | list_for_each_entry(e, &cache->resolve, list) { | |
1126 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1127 | return e; | |
1128 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1129 | return e; | |
1130 | } | |
1131 | ||
1132 | return NULL; | |
1133 | } | |
1134 | ||
a3d4e20a | 1135 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1136 | struct inquiry_entry *ie) |
a3d4e20a JH |
1137 | { |
1138 | struct discovery_state *cache = &hdev->discovery; | |
1139 | struct list_head *pos = &cache->resolve; | |
1140 | struct inquiry_entry *p; | |
1141 | ||
1142 | list_del(&ie->list); | |
1143 | ||
1144 | list_for_each_entry(p, &cache->resolve, list) { | |
1145 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1146 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1147 | break; |
1148 | pos = &p->list; | |
1149 | } | |
1150 | ||
1151 | list_add(&ie->list, pos); | |
1152 | } | |
1153 | ||
af58925c MH |
1154 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1155 | bool name_known) | |
1da177e4 | 1156 | { |
30883512 | 1157 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1158 | struct inquiry_entry *ie; |
af58925c | 1159 | u32 flags = 0; |
1da177e4 | 1160 | |
6ed93dc6 | 1161 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1162 | |
6928a924 | 1163 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1164 | |
af58925c MH |
1165 | if (!data->ssp_mode) |
1166 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1167 | |
70f23020 | 1168 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1169 | if (ie) { |
af58925c MH |
1170 | if (!ie->data.ssp_mode) |
1171 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1172 | |
a3d4e20a | 1173 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1174 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1175 | ie->data.rssi = data->rssi; |
1176 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1177 | } | |
1178 | ||
561aafbc | 1179 | goto update; |
a3d4e20a | 1180 | } |
561aafbc JH |
1181 | |
1182 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1183 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1184 | if (!ie) { |
1185 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1186 | goto done; | |
1187 | } | |
561aafbc JH |
1188 | |
1189 | list_add(&ie->all, &cache->all); | |
1190 | ||
1191 | if (name_known) { | |
1192 | ie->name_state = NAME_KNOWN; | |
1193 | } else { | |
1194 | ie->name_state = NAME_NOT_KNOWN; | |
1195 | list_add(&ie->list, &cache->unknown); | |
1196 | } | |
70f23020 | 1197 | |
561aafbc JH |
1198 | update: |
1199 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1200 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1201 | ie->name_state = NAME_KNOWN; |
1202 | list_del(&ie->list); | |
1da177e4 LT |
1203 | } |
1204 | ||
70f23020 AE |
1205 | memcpy(&ie->data, data, sizeof(*data)); |
1206 | ie->timestamp = jiffies; | |
1da177e4 | 1207 | cache->timestamp = jiffies; |
3175405b JH |
1208 | |
1209 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1210 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1211 | |
af58925c MH |
1212 | done: |
1213 | return flags; | |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1217 | { | |
30883512 | 1218 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1219 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1220 | struct inquiry_entry *e; | |
1221 | int copied = 0; | |
1222 | ||
561aafbc | 1223 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1224 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1225 | |
1226 | if (copied >= num) | |
1227 | break; | |
1228 | ||
1da177e4 LT |
1229 | bacpy(&info->bdaddr, &data->bdaddr); |
1230 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1231 | info->pscan_period_mode = data->pscan_period_mode; | |
1232 | info->pscan_mode = data->pscan_mode; | |
1233 | memcpy(info->dev_class, data->dev_class, 3); | |
1234 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1235 | |
1da177e4 | 1236 | info++; |
b57c1a56 | 1237 | copied++; |
1da177e4 LT |
1238 | } |
1239 | ||
1240 | BT_DBG("cache %p, copied %d", cache, copied); | |
1241 | return copied; | |
1242 | } | |
1243 | ||
a1d01db1 | 1244 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1245 | { |
1246 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1247 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1248 | struct hci_cp_inquiry cp; |
1249 | ||
1250 | BT_DBG("%s", hdev->name); | |
1251 | ||
1252 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 1253 | return 0; |
1da177e4 LT |
1254 | |
1255 | /* Start Inquiry */ | |
1256 | memcpy(&cp.lap, &ir->lap, 3); | |
1257 | cp.length = ir->length; | |
1258 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1259 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
1260 | |
1261 | return 0; | |
1da177e4 LT |
1262 | } |
1263 | ||
1264 | int hci_inquiry(void __user *arg) | |
1265 | { | |
1266 | __u8 __user *ptr = arg; | |
1267 | struct hci_inquiry_req ir; | |
1268 | struct hci_dev *hdev; | |
1269 | int err = 0, do_inquiry = 0, max_rsp; | |
1270 | long timeo; | |
1271 | __u8 *buf; | |
1272 | ||
1273 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1274 | return -EFAULT; | |
1275 | ||
5a08ecce AE |
1276 | hdev = hci_dev_get(ir.dev_id); |
1277 | if (!hdev) | |
1da177e4 LT |
1278 | return -ENODEV; |
1279 | ||
d7a5a11d | 1280 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1281 | err = -EBUSY; |
1282 | goto done; | |
1283 | } | |
1284 | ||
d7a5a11d | 1285 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1286 | err = -EOPNOTSUPP; |
1287 | goto done; | |
1288 | } | |
1289 | ||
ca8bee5d | 1290 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1291 | err = -EOPNOTSUPP; |
1292 | goto done; | |
1293 | } | |
1294 | ||
d7a5a11d | 1295 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1296 | err = -EOPNOTSUPP; |
1297 | goto done; | |
1298 | } | |
1299 | ||
06b07a08 PS |
1300 | /* Restrict maximum inquiry length to 60 seconds */ |
1301 | if (ir.length > 60) { | |
1302 | err = -EINVAL; | |
1303 | goto done; | |
1304 | } | |
1305 | ||
09fd0de5 | 1306 | hci_dev_lock(hdev); |
8e87d142 | 1307 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1308 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1309 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1310 | do_inquiry = 1; |
1311 | } | |
09fd0de5 | 1312 | hci_dev_unlock(hdev); |
1da177e4 | 1313 | |
04837f64 | 1314 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1315 | |
1316 | if (do_inquiry) { | |
01178cd4 | 1317 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 1318 | timeo, NULL); |
70f23020 AE |
1319 | if (err < 0) |
1320 | goto done; | |
3e13fa1e AG |
1321 | |
1322 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1323 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1324 | */ | |
74316201 | 1325 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
7e5b248e PB |
1326 | TASK_INTERRUPTIBLE)) { |
1327 | err = -EINTR; | |
1328 | goto done; | |
1329 | } | |
70f23020 | 1330 | } |
1da177e4 | 1331 | |
8fc9ced3 GP |
1332 | /* for unlimited number of responses we will use buffer with |
1333 | * 255 entries | |
1334 | */ | |
1da177e4 LT |
1335 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1336 | ||
1337 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1338 | * copy it to the user space. | |
1339 | */ | |
6da2ec56 | 1340 | buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL); |
70f23020 | 1341 | if (!buf) { |
1da177e4 LT |
1342 | err = -ENOMEM; |
1343 | goto done; | |
1344 | } | |
1345 | ||
09fd0de5 | 1346 | hci_dev_lock(hdev); |
1da177e4 | 1347 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1348 | hci_dev_unlock(hdev); |
1da177e4 LT |
1349 | |
1350 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1351 | ||
1352 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1353 | ptr += sizeof(ir); | |
1354 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1355 | ir.num_rsp)) |
1da177e4 | 1356 | err = -EFAULT; |
8e87d142 | 1357 | } else |
1da177e4 LT |
1358 | err = -EFAULT; |
1359 | ||
1360 | kfree(buf); | |
1361 | ||
1362 | done: | |
1363 | hci_dev_put(hdev); | |
1364 | return err; | |
1365 | } | |
1366 | ||
7a0e5b15 MK |
1367 | /** |
1368 | * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address | |
1369 | * (BD_ADDR) for a HCI device from | |
1370 | * a firmware node property. | |
1371 | * @hdev: The HCI device | |
1372 | * | |
1373 | * Search the firmware node for 'local-bd-address'. | |
1374 | * | |
1375 | * All-zero BD addresses are rejected, because those could be properties | |
1376 | * that exist in the firmware tables, but were not updated by the firmware. For | |
1377 | * example, the DTS could define 'local-bd-address', with zero BD addresses. | |
1378 | */ | |
1379 | static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev) | |
1380 | { | |
1381 | struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent); | |
1382 | bdaddr_t ba; | |
1383 | int ret; | |
1384 | ||
1385 | ret = fwnode_property_read_u8_array(fwnode, "local-bd-address", | |
1386 | (u8 *)&ba, sizeof(ba)); | |
1387 | if (ret < 0 || !bacmp(&ba, BDADDR_ANY)) | |
1388 | return; | |
1389 | ||
1390 | bacpy(&hdev->public_addr, &ba); | |
1391 | } | |
1392 | ||
cbed0ca1 | 1393 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1394 | { |
1da177e4 LT |
1395 | int ret = 0; |
1396 | ||
1da177e4 LT |
1397 | BT_DBG("%s %p", hdev->name, hdev); |
1398 | ||
b504430c | 1399 | hci_req_sync_lock(hdev); |
1da177e4 | 1400 | |
d7a5a11d | 1401 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1402 | ret = -ENODEV; |
1403 | goto done; | |
1404 | } | |
1405 | ||
d7a5a11d MH |
1406 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1407 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1408 | /* Check for rfkill but allow the HCI setup stage to |
1409 | * proceed (which in itself doesn't cause any RF activity). | |
1410 | */ | |
d7a5a11d | 1411 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1412 | ret = -ERFKILL; |
1413 | goto done; | |
1414 | } | |
1415 | ||
1416 | /* Check for valid public address or a configured static | |
1417 | * random adddress, but let the HCI setup proceed to | |
1418 | * be able to determine if there is a public address | |
1419 | * or not. | |
1420 | * | |
c6beca0e MH |
1421 | * In case of user channel usage, it is not important |
1422 | * if a public address or static random address is | |
1423 | * available. | |
1424 | * | |
a5c8f270 MH |
1425 | * This check is only valid for BR/EDR controllers |
1426 | * since AMP controllers do not have an address. | |
1427 | */ | |
d7a5a11d | 1428 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
ca8bee5d | 1429 | hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
1430 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1431 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1432 | ret = -EADDRNOTAVAIL; | |
1433 | goto done; | |
1434 | } | |
611b30f7 MH |
1435 | } |
1436 | ||
1da177e4 LT |
1437 | if (test_bit(HCI_UP, &hdev->flags)) { |
1438 | ret = -EALREADY; | |
1439 | goto done; | |
1440 | } | |
1441 | ||
1da177e4 LT |
1442 | if (hdev->open(hdev)) { |
1443 | ret = -EIO; | |
1444 | goto done; | |
1445 | } | |
1446 | ||
e9ca8bf1 | 1447 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1448 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1449 | |
f41c70c4 MH |
1450 | atomic_set(&hdev->cmd_cnt, 1); |
1451 | set_bit(HCI_INIT, &hdev->flags); | |
1452 | ||
740011cf SW |
1453 | if (hci_dev_test_flag(hdev, HCI_SETUP) || |
1454 | test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) { | |
f95705e6 MH |
1455 | bool invalid_bdaddr; |
1456 | ||
e131d74a MH |
1457 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1458 | ||
af202f84 MH |
1459 | if (hdev->setup) |
1460 | ret = hdev->setup(hdev); | |
f41c70c4 | 1461 | |
f95705e6 MH |
1462 | /* The transport driver can set the quirk to mark the |
1463 | * BD_ADDR invalid before creating the HCI device or in | |
1464 | * its setup callback. | |
1465 | */ | |
1466 | invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, | |
1467 | &hdev->quirks); | |
1468 | ||
7a0e5b15 MK |
1469 | if (ret) |
1470 | goto setup_failed; | |
1471 | ||
1472 | if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) { | |
1473 | if (!bacmp(&hdev->public_addr, BDADDR_ANY)) | |
1474 | hci_dev_get_bd_addr_from_property(hdev); | |
1475 | ||
1476 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
f95705e6 | 1477 | hdev->set_bdaddr) { |
7a0e5b15 MK |
1478 | ret = hdev->set_bdaddr(hdev, |
1479 | &hdev->public_addr); | |
f95705e6 MH |
1480 | |
1481 | /* If setting of the BD_ADDR from the device | |
1482 | * property succeeds, then treat the address | |
1483 | * as valid even if the invalid BD_ADDR | |
1484 | * quirk indicates otherwise. | |
1485 | */ | |
1486 | if (!ret) | |
1487 | invalid_bdaddr = false; | |
1488 | } | |
7a0e5b15 MK |
1489 | } |
1490 | ||
1491 | setup_failed: | |
af202f84 MH |
1492 | /* The transport driver can set these quirks before |
1493 | * creating the HCI device or in its setup callback. | |
1494 | * | |
f95705e6 MH |
1495 | * For the invalid BD_ADDR quirk it is possible that |
1496 | * it becomes a valid address if the bootloader does | |
1497 | * provide it (see above). | |
1498 | * | |
af202f84 MH |
1499 | * In case any of them is set, the controller has to |
1500 | * start up as unconfigured. | |
1501 | */ | |
eb1904f4 | 1502 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
f95705e6 | 1503 | invalid_bdaddr) |
a1536da2 | 1504 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1505 | |
0ebca7d6 MH |
1506 | /* For an unconfigured controller it is required to |
1507 | * read at least the version information provided by | |
1508 | * the Read Local Version Information command. | |
1509 | * | |
1510 | * If the set_bdaddr driver callback is provided, then | |
1511 | * also the original Bluetooth public device address | |
1512 | * will be read using the Read BD Address command. | |
1513 | */ | |
d7a5a11d | 1514 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1515 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1516 | } |
1517 | ||
d7a5a11d | 1518 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1519 | /* If public address change is configured, ensure that |
1520 | * the address gets programmed. If the driver does not | |
1521 | * support changing the public address, fail the power | |
1522 | * on procedure. | |
1523 | */ | |
1524 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1525 | hdev->set_bdaddr) | |
24c457e2 MH |
1526 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1527 | else | |
1528 | ret = -EADDRNOTAVAIL; | |
1529 | } | |
1530 | ||
f41c70c4 | 1531 | if (!ret) { |
d7a5a11d | 1532 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1533 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1534 | ret = __hci_init(hdev); |
98a63aaf MH |
1535 | if (!ret && hdev->post_init) |
1536 | ret = hdev->post_init(hdev); | |
1537 | } | |
1da177e4 LT |
1538 | } |
1539 | ||
7e995b9e MH |
1540 | /* If the HCI Reset command is clearing all diagnostic settings, |
1541 | * then they need to be reprogrammed after the init procedure | |
1542 | * completed. | |
1543 | */ | |
1544 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
b56c7b25 | 1545 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
7e995b9e MH |
1546 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) |
1547 | ret = hdev->set_diag(hdev, true); | |
1548 | ||
f41c70c4 MH |
1549 | clear_bit(HCI_INIT, &hdev->flags); |
1550 | ||
1da177e4 LT |
1551 | if (!ret) { |
1552 | hci_dev_hold(hdev); | |
a1536da2 | 1553 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
a73c046a | 1554 | hci_adv_instances_set_rpa_expired(hdev, true); |
1da177e4 | 1555 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1556 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
6d5d2ee6 | 1557 | hci_leds_update_powered(hdev, true); |
d7a5a11d MH |
1558 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1559 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1560 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1561 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
2ff13894 | 1562 | hci_dev_test_flag(hdev, HCI_MGMT) && |
ca8bee5d | 1563 | hdev->dev_type == HCI_PRIMARY) { |
2ff13894 JH |
1564 | ret = __hci_req_hci_power_on(hdev); |
1565 | mgmt_power_on(hdev, ret); | |
56e5cb86 | 1566 | } |
8e87d142 | 1567 | } else { |
1da177e4 | 1568 | /* Init failed, cleanup */ |
3eff45ea | 1569 | flush_work(&hdev->tx_work); |
10593c2e LM |
1570 | |
1571 | /* Since hci_rx_work() is possible to awake new cmd_work | |
1572 | * it should be flushed first to avoid unexpected call of | |
1573 | * hci_cmd_work() | |
1574 | */ | |
b78752cc | 1575 | flush_work(&hdev->rx_work); |
10593c2e | 1576 | flush_work(&hdev->cmd_work); |
1da177e4 LT |
1577 | |
1578 | skb_queue_purge(&hdev->cmd_q); | |
1579 | skb_queue_purge(&hdev->rx_q); | |
1580 | ||
1581 | if (hdev->flush) | |
1582 | hdev->flush(hdev); | |
1583 | ||
1584 | if (hdev->sent_cmd) { | |
1585 | kfree_skb(hdev->sent_cmd); | |
1586 | hdev->sent_cmd = NULL; | |
1587 | } | |
1588 | ||
e9ca8bf1 | 1589 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1590 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1591 | |
1da177e4 | 1592 | hdev->close(hdev); |
fee746b0 | 1593 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | done: | |
b504430c | 1597 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1598 | return ret; |
1599 | } | |
1600 | ||
cbed0ca1 JH |
1601 | /* ---- HCI ioctl helpers ---- */ |
1602 | ||
1603 | int hci_dev_open(__u16 dev) | |
1604 | { | |
1605 | struct hci_dev *hdev; | |
1606 | int err; | |
1607 | ||
1608 | hdev = hci_dev_get(dev); | |
1609 | if (!hdev) | |
1610 | return -ENODEV; | |
1611 | ||
4a964404 | 1612 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1613 | * up as user channel. Trying to bring them up as normal devices |
1614 | * will result into a failure. Only user channel operation is | |
1615 | * possible. | |
1616 | * | |
1617 | * When this function is called for a user channel, the flag | |
1618 | * HCI_USER_CHANNEL will be set first before attempting to | |
1619 | * open the device. | |
1620 | */ | |
d7a5a11d MH |
1621 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1622 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1623 | err = -EOPNOTSUPP; |
1624 | goto done; | |
1625 | } | |
1626 | ||
e1d08f40 JH |
1627 | /* We need to ensure that no other power on/off work is pending |
1628 | * before proceeding to call hci_dev_do_open. This is | |
1629 | * particularly important if the setup procedure has not yet | |
1630 | * completed. | |
1631 | */ | |
a69d8927 | 1632 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1633 | cancel_delayed_work(&hdev->power_off); |
1634 | ||
a5c8f270 MH |
1635 | /* After this call it is guaranteed that the setup procedure |
1636 | * has finished. This means that error conditions like RFKILL | |
1637 | * or no valid public or static random address apply. | |
1638 | */ | |
e1d08f40 JH |
1639 | flush_workqueue(hdev->req_workqueue); |
1640 | ||
12aa4f0a | 1641 | /* For controllers not using the management interface and that |
b6ae8457 | 1642 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1643 | * so that pairing works for them. Once the management interface |
1644 | * is in use this bit will be cleared again and userspace has | |
1645 | * to explicitly enable it. | |
1646 | */ | |
d7a5a11d MH |
1647 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1648 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1649 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1650 | |
cbed0ca1 JH |
1651 | err = hci_dev_do_open(hdev); |
1652 | ||
fee746b0 | 1653 | done: |
cbed0ca1 | 1654 | hci_dev_put(hdev); |
cbed0ca1 JH |
1655 | return err; |
1656 | } | |
1657 | ||
d7347f3c JH |
1658 | /* This function requires the caller holds hdev->lock */ |
1659 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1660 | { | |
1661 | struct hci_conn_params *p; | |
1662 | ||
f161dd41 JH |
1663 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1664 | if (p->conn) { | |
1665 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1666 | hci_conn_put(p->conn); |
f161dd41 JH |
1667 | p->conn = NULL; |
1668 | } | |
d7347f3c | 1669 | list_del_init(&p->action); |
f161dd41 | 1670 | } |
d7347f3c JH |
1671 | |
1672 | BT_DBG("All LE pending actions cleared"); | |
1673 | } | |
1674 | ||
6b3cc1db | 1675 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1676 | { |
acc649c6 MH |
1677 | bool auto_off; |
1678 | ||
1da177e4 LT |
1679 | BT_DBG("%s %p", hdev->name, hdev); |
1680 | ||
49b3cf92 GKH |
1681 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
1682 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
1683 | test_bit(HCI_UP, &hdev->flags)) { | |
1684 | /* Execute vendor specific shutdown routine */ | |
1685 | if (hdev->shutdown) | |
1686 | hdev->shutdown(hdev); | |
1687 | } | |
1688 | ||
78c04c0b VCG |
1689 | cancel_delayed_work(&hdev->power_off); |
1690 | ||
7df0f73e | 1691 | hci_request_cancel_all(hdev); |
b504430c | 1692 | hci_req_sync_lock(hdev); |
1da177e4 LT |
1693 | |
1694 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1695 | cancel_delayed_work_sync(&hdev->cmd_timer); |
b504430c | 1696 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1697 | return 0; |
1698 | } | |
1699 | ||
6d5d2ee6 HK |
1700 | hci_leds_update_powered(hdev, false); |
1701 | ||
3eff45ea GP |
1702 | /* Flush RX and TX works */ |
1703 | flush_work(&hdev->tx_work); | |
b78752cc | 1704 | flush_work(&hdev->rx_work); |
1da177e4 | 1705 | |
16ab91ab | 1706 | if (hdev->discov_timeout > 0) { |
16ab91ab | 1707 | hdev->discov_timeout = 0; |
a358dc11 MH |
1708 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1709 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1710 | } |
1711 | ||
a69d8927 | 1712 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1713 | cancel_delayed_work(&hdev->service_cache); |
1714 | ||
a73c046a JK |
1715 | if (hci_dev_test_flag(hdev, HCI_MGMT)) { |
1716 | struct adv_info *adv_instance; | |
1717 | ||
4518bb0f | 1718 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1719 | |
a73c046a JK |
1720 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) |
1721 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); | |
1722 | } | |
1723 | ||
76727c02 JH |
1724 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1725 | * ensuring the workqueue is empty up front. | |
1726 | */ | |
1727 | drain_workqueue(hdev->workqueue); | |
1728 | ||
09fd0de5 | 1729 | hci_dev_lock(hdev); |
1aeb9c65 | 1730 | |
8f502f84 JH |
1731 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1732 | ||
acc649c6 MH |
1733 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1734 | ||
ca8bee5d | 1735 | if (!auto_off && hdev->dev_type == HCI_PRIMARY && |
baab7932 | 1736 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
2ff13894 JH |
1737 | hci_dev_test_flag(hdev, HCI_MGMT)) |
1738 | __mgmt_power_off(hdev); | |
1aeb9c65 | 1739 | |
1f9b9a5d | 1740 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1741 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1742 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1743 | hci_dev_unlock(hdev); |
1da177e4 | 1744 | |
64dae967 MH |
1745 | smp_unregister(hdev); |
1746 | ||
05fcd4c4 | 1747 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1748 | |
1749 | if (hdev->flush) | |
1750 | hdev->flush(hdev); | |
1751 | ||
1752 | /* Reset device */ | |
1753 | skb_queue_purge(&hdev->cmd_q); | |
1754 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1755 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1756 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1757 | set_bit(HCI_INIT, &hdev->flags); |
4ebeee2d | 1758 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL); |
1da177e4 LT |
1759 | clear_bit(HCI_INIT, &hdev->flags); |
1760 | } | |
1761 | ||
c347b765 GP |
1762 | /* flush cmd work */ |
1763 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1764 | |
1765 | /* Drop queues */ | |
1766 | skb_queue_purge(&hdev->rx_q); | |
1767 | skb_queue_purge(&hdev->cmd_q); | |
1768 | skb_queue_purge(&hdev->raw_q); | |
1769 | ||
1770 | /* Drop last sent command */ | |
1771 | if (hdev->sent_cmd) { | |
65cc2b49 | 1772 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1773 | kfree_skb(hdev->sent_cmd); |
1774 | hdev->sent_cmd = NULL; | |
1775 | } | |
1776 | ||
e9ca8bf1 | 1777 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1778 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1779 | |
1da177e4 LT |
1780 | /* After this point our queues are empty |
1781 | * and no tasks are scheduled. */ | |
1782 | hdev->close(hdev); | |
1783 | ||
35b973c9 | 1784 | /* Clear flags */ |
fee746b0 | 1785 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1786 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1787 | |
ced5c338 | 1788 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1789 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1790 | |
e59fda8d | 1791 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1792 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1793 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1794 | |
b504430c | 1795 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1796 | |
1797 | hci_dev_put(hdev); | |
1798 | return 0; | |
1799 | } | |
1800 | ||
1801 | int hci_dev_close(__u16 dev) | |
1802 | { | |
1803 | struct hci_dev *hdev; | |
1804 | int err; | |
1805 | ||
70f23020 AE |
1806 | hdev = hci_dev_get(dev); |
1807 | if (!hdev) | |
1da177e4 | 1808 | return -ENODEV; |
8ee56540 | 1809 | |
d7a5a11d | 1810 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1811 | err = -EBUSY; |
1812 | goto done; | |
1813 | } | |
1814 | ||
a69d8927 | 1815 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1816 | cancel_delayed_work(&hdev->power_off); |
1817 | ||
1da177e4 | 1818 | err = hci_dev_do_close(hdev); |
8ee56540 | 1819 | |
0736cfa8 | 1820 | done: |
1da177e4 LT |
1821 | hci_dev_put(hdev); |
1822 | return err; | |
1823 | } | |
1824 | ||
5c912495 | 1825 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1826 | { |
5c912495 | 1827 | int ret; |
1da177e4 | 1828 | |
5c912495 | 1829 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 1830 | |
b504430c | 1831 | hci_req_sync_lock(hdev); |
1da177e4 | 1832 | |
1da177e4 LT |
1833 | /* Drop queues */ |
1834 | skb_queue_purge(&hdev->rx_q); | |
1835 | skb_queue_purge(&hdev->cmd_q); | |
1836 | ||
76727c02 JH |
1837 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1838 | * ensuring the workqueue is empty up front. | |
1839 | */ | |
1840 | drain_workqueue(hdev->workqueue); | |
1841 | ||
09fd0de5 | 1842 | hci_dev_lock(hdev); |
1f9b9a5d | 1843 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1844 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1845 | hci_dev_unlock(hdev); |
1da177e4 LT |
1846 | |
1847 | if (hdev->flush) | |
1848 | hdev->flush(hdev); | |
1849 | ||
8e87d142 | 1850 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1851 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1852 | |
4ebeee2d | 1853 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL); |
1da177e4 | 1854 | |
b504430c | 1855 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1856 | return ret; |
1857 | } | |
1858 | ||
5c912495 MH |
1859 | int hci_dev_reset(__u16 dev) |
1860 | { | |
1861 | struct hci_dev *hdev; | |
1862 | int err; | |
1863 | ||
1864 | hdev = hci_dev_get(dev); | |
1865 | if (!hdev) | |
1866 | return -ENODEV; | |
1867 | ||
1868 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1869 | err = -ENETDOWN; | |
1870 | goto done; | |
1871 | } | |
1872 | ||
d7a5a11d | 1873 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1874 | err = -EBUSY; |
1875 | goto done; | |
1876 | } | |
1877 | ||
d7a5a11d | 1878 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1879 | err = -EOPNOTSUPP; |
1880 | goto done; | |
1881 | } | |
1882 | ||
1883 | err = hci_dev_do_reset(hdev); | |
1884 | ||
1885 | done: | |
1886 | hci_dev_put(hdev); | |
1887 | return err; | |
1888 | } | |
1889 | ||
1da177e4 LT |
1890 | int hci_dev_reset_stat(__u16 dev) |
1891 | { | |
1892 | struct hci_dev *hdev; | |
1893 | int ret = 0; | |
1894 | ||
70f23020 AE |
1895 | hdev = hci_dev_get(dev); |
1896 | if (!hdev) | |
1da177e4 LT |
1897 | return -ENODEV; |
1898 | ||
d7a5a11d | 1899 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1900 | ret = -EBUSY; |
1901 | goto done; | |
1902 | } | |
1903 | ||
d7a5a11d | 1904 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1905 | ret = -EOPNOTSUPP; |
1906 | goto done; | |
1907 | } | |
1908 | ||
1da177e4 LT |
1909 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1910 | ||
0736cfa8 | 1911 | done: |
1da177e4 | 1912 | hci_dev_put(hdev); |
1da177e4 LT |
1913 | return ret; |
1914 | } | |
1915 | ||
123abc08 JH |
1916 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1917 | { | |
bc6d2d04 | 1918 | bool conn_changed, discov_changed; |
123abc08 JH |
1919 | |
1920 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1921 | ||
1922 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1923 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1924 | HCI_CONNECTABLE); | |
123abc08 | 1925 | else |
a69d8927 MH |
1926 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1927 | HCI_CONNECTABLE); | |
123abc08 | 1928 | |
bc6d2d04 | 1929 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1930 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1931 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1932 | } else { |
a358dc11 | 1933 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1934 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1935 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1936 | } |
1937 | ||
d7a5a11d | 1938 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1939 | return; |
1940 | ||
bc6d2d04 JH |
1941 | if (conn_changed || discov_changed) { |
1942 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1943 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1944 | |
d7a5a11d | 1945 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
cab054ab | 1946 | hci_req_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 1947 | |
123abc08 | 1948 | mgmt_new_settings(hdev); |
bc6d2d04 | 1949 | } |
123abc08 JH |
1950 | } |
1951 | ||
1da177e4 LT |
1952 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1953 | { | |
1954 | struct hci_dev *hdev; | |
1955 | struct hci_dev_req dr; | |
1956 | int err = 0; | |
1957 | ||
1958 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1959 | return -EFAULT; | |
1960 | ||
70f23020 AE |
1961 | hdev = hci_dev_get(dr.dev_id); |
1962 | if (!hdev) | |
1da177e4 LT |
1963 | return -ENODEV; |
1964 | ||
d7a5a11d | 1965 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1966 | err = -EBUSY; |
1967 | goto done; | |
1968 | } | |
1969 | ||
d7a5a11d | 1970 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1971 | err = -EOPNOTSUPP; |
1972 | goto done; | |
1973 | } | |
1974 | ||
ca8bee5d | 1975 | if (hdev->dev_type != HCI_PRIMARY) { |
5b69bef5 MH |
1976 | err = -EOPNOTSUPP; |
1977 | goto done; | |
1978 | } | |
1979 | ||
d7a5a11d | 1980 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1981 | err = -EOPNOTSUPP; |
1982 | goto done; | |
1983 | } | |
1984 | ||
1da177e4 LT |
1985 | switch (cmd) { |
1986 | case HCISETAUTH: | |
01178cd4 | 1987 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1988 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1989 | break; |
1990 | ||
1991 | case HCISETENCRYPT: | |
1992 | if (!lmp_encrypt_capable(hdev)) { | |
1993 | err = -EOPNOTSUPP; | |
1994 | break; | |
1995 | } | |
1996 | ||
1997 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1998 | /* Auth must be enabled first */ | |
01178cd4 | 1999 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 2000 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
2001 | if (err) |
2002 | break; | |
2003 | } | |
2004 | ||
01178cd4 | 2005 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 2006 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
2007 | break; |
2008 | ||
2009 | case HCISETSCAN: | |
01178cd4 | 2010 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 2011 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 2012 | |
bc6d2d04 JH |
2013 | /* Ensure that the connectable and discoverable states |
2014 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 2015 | */ |
123abc08 JH |
2016 | if (!err) |
2017 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
2018 | break; |
2019 | ||
1da177e4 | 2020 | case HCISETLINKPOL: |
01178cd4 | 2021 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 2022 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
2023 | break; |
2024 | ||
2025 | case HCISETLINKMODE: | |
e4e8e37c MH |
2026 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2027 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2028 | break; | |
2029 | ||
2030 | case HCISETPTYPE: | |
b7c23df8 JK |
2031 | if (hdev->pkt_type == (__u16) dr.dev_opt) |
2032 | break; | |
2033 | ||
e4e8e37c | 2034 | hdev->pkt_type = (__u16) dr.dev_opt; |
b7c23df8 | 2035 | mgmt_phy_configuration_changed(hdev, NULL); |
1da177e4 LT |
2036 | break; |
2037 | ||
2038 | case HCISETACLMTU: | |
e4e8e37c MH |
2039 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2040 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2041 | break; |
2042 | ||
2043 | case HCISETSCOMTU: | |
e4e8e37c MH |
2044 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2045 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2046 | break; |
2047 | ||
2048 | default: | |
2049 | err = -EINVAL; | |
2050 | break; | |
2051 | } | |
e4e8e37c | 2052 | |
0736cfa8 | 2053 | done: |
1da177e4 LT |
2054 | hci_dev_put(hdev); |
2055 | return err; | |
2056 | } | |
2057 | ||
2058 | int hci_get_dev_list(void __user *arg) | |
2059 | { | |
8035ded4 | 2060 | struct hci_dev *hdev; |
1da177e4 LT |
2061 | struct hci_dev_list_req *dl; |
2062 | struct hci_dev_req *dr; | |
1da177e4 LT |
2063 | int n = 0, size, err; |
2064 | __u16 dev_num; | |
2065 | ||
2066 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2067 | return -EFAULT; | |
2068 | ||
2069 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2070 | return -EINVAL; | |
2071 | ||
2072 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2073 | ||
70f23020 AE |
2074 | dl = kzalloc(size, GFP_KERNEL); |
2075 | if (!dl) | |
1da177e4 LT |
2076 | return -ENOMEM; |
2077 | ||
2078 | dr = dl->dev_req; | |
2079 | ||
f20d09d5 | 2080 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2081 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 2082 | unsigned long flags = hdev->flags; |
c542a06c | 2083 | |
2e84d8db MH |
2084 | /* When the auto-off is configured it means the transport |
2085 | * is running, but in that case still indicate that the | |
2086 | * device is actually down. | |
2087 | */ | |
d7a5a11d | 2088 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 2089 | flags &= ~BIT(HCI_UP); |
c542a06c | 2090 | |
1da177e4 | 2091 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2092 | (dr + n)->dev_opt = flags; |
c542a06c | 2093 | |
1da177e4 LT |
2094 | if (++n >= dev_num) |
2095 | break; | |
2096 | } | |
f20d09d5 | 2097 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2098 | |
2099 | dl->dev_num = n; | |
2100 | size = sizeof(*dl) + n * sizeof(*dr); | |
2101 | ||
2102 | err = copy_to_user(arg, dl, size); | |
2103 | kfree(dl); | |
2104 | ||
2105 | return err ? -EFAULT : 0; | |
2106 | } | |
2107 | ||
2108 | int hci_get_dev_info(void __user *arg) | |
2109 | { | |
2110 | struct hci_dev *hdev; | |
2111 | struct hci_dev_info di; | |
2e84d8db | 2112 | unsigned long flags; |
1da177e4 LT |
2113 | int err = 0; |
2114 | ||
2115 | if (copy_from_user(&di, arg, sizeof(di))) | |
2116 | return -EFAULT; | |
2117 | ||
70f23020 AE |
2118 | hdev = hci_dev_get(di.dev_id); |
2119 | if (!hdev) | |
1da177e4 LT |
2120 | return -ENODEV; |
2121 | ||
2e84d8db MH |
2122 | /* When the auto-off is configured it means the transport |
2123 | * is running, but in that case still indicate that the | |
2124 | * device is actually down. | |
2125 | */ | |
d7a5a11d | 2126 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
2127 | flags = hdev->flags & ~BIT(HCI_UP); |
2128 | else | |
2129 | flags = hdev->flags; | |
c542a06c | 2130 | |
1da177e4 LT |
2131 | strcpy(di.name, hdev->name); |
2132 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2133 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2134 | di.flags = flags; |
1da177e4 | 2135 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2136 | if (lmp_bredr_capable(hdev)) { |
2137 | di.acl_mtu = hdev->acl_mtu; | |
2138 | di.acl_pkts = hdev->acl_pkts; | |
2139 | di.sco_mtu = hdev->sco_mtu; | |
2140 | di.sco_pkts = hdev->sco_pkts; | |
2141 | } else { | |
2142 | di.acl_mtu = hdev->le_mtu; | |
2143 | di.acl_pkts = hdev->le_pkts; | |
2144 | di.sco_mtu = 0; | |
2145 | di.sco_pkts = 0; | |
2146 | } | |
1da177e4 LT |
2147 | di.link_policy = hdev->link_policy; |
2148 | di.link_mode = hdev->link_mode; | |
2149 | ||
2150 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2151 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2152 | ||
2153 | if (copy_to_user(arg, &di, sizeof(di))) | |
2154 | err = -EFAULT; | |
2155 | ||
2156 | hci_dev_put(hdev); | |
2157 | ||
2158 | return err; | |
2159 | } | |
2160 | ||
2161 | /* ---- Interface to HCI drivers ---- */ | |
2162 | ||
611b30f7 MH |
2163 | static int hci_rfkill_set_block(void *data, bool blocked) |
2164 | { | |
2165 | struct hci_dev *hdev = data; | |
2166 | ||
2167 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2168 | ||
d7a5a11d | 2169 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
2170 | return -EBUSY; |
2171 | ||
5e130367 | 2172 | if (blocked) { |
a1536da2 | 2173 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2174 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2175 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2176 | hci_dev_do_close(hdev); |
5e130367 | 2177 | } else { |
a358dc11 | 2178 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2179 | } |
611b30f7 MH |
2180 | |
2181 | return 0; | |
2182 | } | |
2183 | ||
2184 | static const struct rfkill_ops hci_rfkill_ops = { | |
2185 | .set_block = hci_rfkill_set_block, | |
2186 | }; | |
2187 | ||
ab81cbf9 JH |
2188 | static void hci_power_on(struct work_struct *work) |
2189 | { | |
2190 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2191 | int err; |
ab81cbf9 JH |
2192 | |
2193 | BT_DBG("%s", hdev->name); | |
2194 | ||
2ff13894 JH |
2195 | if (test_bit(HCI_UP, &hdev->flags) && |
2196 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
2197 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 2198 | cancel_delayed_work(&hdev->power_off); |
2ff13894 JH |
2199 | hci_req_sync_lock(hdev); |
2200 | err = __hci_req_hci_power_on(hdev); | |
2201 | hci_req_sync_unlock(hdev); | |
2202 | mgmt_power_on(hdev, err); | |
2203 | return; | |
2204 | } | |
2205 | ||
cbed0ca1 | 2206 | err = hci_dev_do_open(hdev); |
96570ffc | 2207 | if (err < 0) { |
3ad67582 | 2208 | hci_dev_lock(hdev); |
96570ffc | 2209 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2210 | hci_dev_unlock(hdev); |
ab81cbf9 | 2211 | return; |
96570ffc | 2212 | } |
ab81cbf9 | 2213 | |
a5c8f270 MH |
2214 | /* During the HCI setup phase, a few error conditions are |
2215 | * ignored and they need to be checked now. If they are still | |
2216 | * valid, it is important to turn the device back off. | |
2217 | */ | |
d7a5a11d MH |
2218 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2219 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
ca8bee5d | 2220 | (hdev->dev_type == HCI_PRIMARY && |
a5c8f270 MH |
2221 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2222 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2223 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2224 | hci_dev_do_close(hdev); |
d7a5a11d | 2225 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2226 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2227 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2228 | } |
ab81cbf9 | 2229 | |
a69d8927 | 2230 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2231 | /* For unconfigured devices, set the HCI_RAW flag |
2232 | * so that userspace can easily identify them. | |
4a964404 | 2233 | */ |
d7a5a11d | 2234 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2235 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2236 | |
2237 | /* For fully configured devices, this will send | |
2238 | * the Index Added event. For unconfigured devices, | |
2239 | * it will send Unconfigued Index Added event. | |
2240 | * | |
2241 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2242 | * and no event will be send. | |
2243 | */ | |
2244 | mgmt_index_added(hdev); | |
a69d8927 | 2245 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2246 | /* When the controller is now configured, then it |
2247 | * is important to clear the HCI_RAW flag. | |
2248 | */ | |
d7a5a11d | 2249 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2250 | clear_bit(HCI_RAW, &hdev->flags); |
2251 | ||
d603b76b MH |
2252 | /* Powering on the controller with HCI_CONFIG set only |
2253 | * happens with the transition from unconfigured to | |
2254 | * configured. This will send the Index Added event. | |
2255 | */ | |
744cf19e | 2256 | mgmt_index_added(hdev); |
fee746b0 | 2257 | } |
ab81cbf9 JH |
2258 | } |
2259 | ||
2260 | static void hci_power_off(struct work_struct *work) | |
2261 | { | |
3243553f | 2262 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2263 | power_off.work); |
ab81cbf9 JH |
2264 | |
2265 | BT_DBG("%s", hdev->name); | |
2266 | ||
8ee56540 | 2267 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2268 | } |
2269 | ||
c7741d16 MH |
2270 | static void hci_error_reset(struct work_struct *work) |
2271 | { | |
2272 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2273 | ||
2274 | BT_DBG("%s", hdev->name); | |
2275 | ||
2276 | if (hdev->hw_error) | |
2277 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2278 | else | |
2064ee33 | 2279 | bt_dev_err(hdev, "hardware error 0x%2.2x", hdev->hw_error_code); |
c7741d16 MH |
2280 | |
2281 | if (hci_dev_do_close(hdev)) | |
2282 | return; | |
2283 | ||
c7741d16 MH |
2284 | hci_dev_do_open(hdev); |
2285 | } | |
2286 | ||
35f7498a | 2287 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2288 | { |
4821002c | 2289 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2290 | |
4821002c JH |
2291 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2292 | list_del(&uuid->list); | |
2aeb9a1a JH |
2293 | kfree(uuid); |
2294 | } | |
2aeb9a1a JH |
2295 | } |
2296 | ||
35f7498a | 2297 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2298 | { |
0378b597 | 2299 | struct link_key *key; |
55ed8ca1 | 2300 | |
0378b597 JH |
2301 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2302 | list_del_rcu(&key->list); | |
2303 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2304 | } |
55ed8ca1 JH |
2305 | } |
2306 | ||
35f7498a | 2307 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2308 | { |
970d0f1b | 2309 | struct smp_ltk *k; |
b899efaf | 2310 | |
970d0f1b JH |
2311 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2312 | list_del_rcu(&k->list); | |
2313 | kfree_rcu(k, rcu); | |
b899efaf | 2314 | } |
b899efaf VCG |
2315 | } |
2316 | ||
970c4e46 JH |
2317 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2318 | { | |
adae20cb | 2319 | struct smp_irk *k; |
970c4e46 | 2320 | |
adae20cb JH |
2321 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2322 | list_del_rcu(&k->list); | |
2323 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2324 | } |
2325 | } | |
2326 | ||
55ed8ca1 JH |
2327 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2328 | { | |
8035ded4 | 2329 | struct link_key *k; |
55ed8ca1 | 2330 | |
0378b597 JH |
2331 | rcu_read_lock(); |
2332 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2333 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2334 | rcu_read_unlock(); | |
55ed8ca1 | 2335 | return k; |
0378b597 JH |
2336 | } |
2337 | } | |
2338 | rcu_read_unlock(); | |
55ed8ca1 JH |
2339 | |
2340 | return NULL; | |
2341 | } | |
2342 | ||
745c0ce3 | 2343 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2344 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2345 | { |
2346 | /* Legacy key */ | |
2347 | if (key_type < 0x03) | |
745c0ce3 | 2348 | return true; |
d25e28ab JH |
2349 | |
2350 | /* Debug keys are insecure so don't store them persistently */ | |
2351 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2352 | return false; |
d25e28ab JH |
2353 | |
2354 | /* Changed combination key and there's no previous one */ | |
2355 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2356 | return false; |
d25e28ab JH |
2357 | |
2358 | /* Security mode 3 case */ | |
2359 | if (!conn) | |
745c0ce3 | 2360 | return true; |
d25e28ab | 2361 | |
e3befab9 JH |
2362 | /* BR/EDR key derived using SC from an LE link */ |
2363 | if (conn->type == LE_LINK) | |
2364 | return true; | |
2365 | ||
d25e28ab JH |
2366 | /* Neither local nor remote side had no-bonding as requirement */ |
2367 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2368 | return true; |
d25e28ab JH |
2369 | |
2370 | /* Local side had dedicated bonding as requirement */ | |
2371 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2372 | return true; |
d25e28ab JH |
2373 | |
2374 | /* Remote side had dedicated bonding as requirement */ | |
2375 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2376 | return true; |
d25e28ab JH |
2377 | |
2378 | /* If none of the above criteria match, then don't store the key | |
2379 | * persistently */ | |
745c0ce3 | 2380 | return false; |
d25e28ab JH |
2381 | } |
2382 | ||
e804d25d | 2383 | static u8 ltk_role(u8 type) |
98a0b845 | 2384 | { |
e804d25d JH |
2385 | if (type == SMP_LTK) |
2386 | return HCI_ROLE_MASTER; | |
98a0b845 | 2387 | |
e804d25d | 2388 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2389 | } |
2390 | ||
f3a73d97 JH |
2391 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2392 | u8 addr_type, u8 role) | |
75d262c2 | 2393 | { |
c9839a11 | 2394 | struct smp_ltk *k; |
75d262c2 | 2395 | |
970d0f1b JH |
2396 | rcu_read_lock(); |
2397 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2398 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2399 | continue; | |
2400 | ||
923e2414 | 2401 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2402 | rcu_read_unlock(); |
75d262c2 | 2403 | return k; |
970d0f1b JH |
2404 | } |
2405 | } | |
2406 | rcu_read_unlock(); | |
75d262c2 VCG |
2407 | |
2408 | return NULL; | |
2409 | } | |
75d262c2 | 2410 | |
970c4e46 JH |
2411 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2412 | { | |
2413 | struct smp_irk *irk; | |
2414 | ||
adae20cb JH |
2415 | rcu_read_lock(); |
2416 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2417 | if (!bacmp(&irk->rpa, rpa)) { | |
2418 | rcu_read_unlock(); | |
970c4e46 | 2419 | return irk; |
adae20cb | 2420 | } |
970c4e46 JH |
2421 | } |
2422 | ||
adae20cb | 2423 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2424 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2425 | bacpy(&irk->rpa, rpa); |
adae20cb | 2426 | rcu_read_unlock(); |
970c4e46 JH |
2427 | return irk; |
2428 | } | |
2429 | } | |
adae20cb | 2430 | rcu_read_unlock(); |
970c4e46 JH |
2431 | |
2432 | return NULL; | |
2433 | } | |
2434 | ||
2435 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2436 | u8 addr_type) | |
2437 | { | |
2438 | struct smp_irk *irk; | |
2439 | ||
6cfc9988 JH |
2440 | /* Identity Address must be public or static random */ |
2441 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2442 | return NULL; | |
2443 | ||
adae20cb JH |
2444 | rcu_read_lock(); |
2445 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2446 | if (addr_type == irk->addr_type && |
adae20cb JH |
2447 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2448 | rcu_read_unlock(); | |
970c4e46 | 2449 | return irk; |
adae20cb | 2450 | } |
970c4e46 | 2451 | } |
adae20cb | 2452 | rcu_read_unlock(); |
970c4e46 JH |
2453 | |
2454 | return NULL; | |
2455 | } | |
2456 | ||
567fa2aa | 2457 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2458 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2459 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2460 | { |
2461 | struct link_key *key, *old_key; | |
745c0ce3 | 2462 | u8 old_key_type; |
55ed8ca1 JH |
2463 | |
2464 | old_key = hci_find_link_key(hdev, bdaddr); | |
2465 | if (old_key) { | |
2466 | old_key_type = old_key->type; | |
2467 | key = old_key; | |
2468 | } else { | |
12adcf3a | 2469 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2470 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2471 | if (!key) |
567fa2aa | 2472 | return NULL; |
0378b597 | 2473 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2474 | } |
2475 | ||
6ed93dc6 | 2476 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2477 | |
d25e28ab JH |
2478 | /* Some buggy controller combinations generate a changed |
2479 | * combination key for legacy pairing even when there's no | |
2480 | * previous key */ | |
2481 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2482 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2483 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2484 | if (conn) |
2485 | conn->key_type = type; | |
2486 | } | |
d25e28ab | 2487 | |
55ed8ca1 | 2488 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2489 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2490 | key->pin_len = pin_len; |
2491 | ||
b6020ba0 | 2492 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2493 | key->type = old_key_type; |
4748fed2 JH |
2494 | else |
2495 | key->type = type; | |
2496 | ||
7652ff6a JH |
2497 | if (persistent) |
2498 | *persistent = hci_persistent_key(hdev, conn, type, | |
2499 | old_key_type); | |
4df378a1 | 2500 | |
567fa2aa | 2501 | return key; |
55ed8ca1 JH |
2502 | } |
2503 | ||
ca9142b8 | 2504 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2505 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2506 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2507 | { |
c9839a11 | 2508 | struct smp_ltk *key, *old_key; |
e804d25d | 2509 | u8 role = ltk_role(type); |
75d262c2 | 2510 | |
f3a73d97 | 2511 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2512 | if (old_key) |
75d262c2 | 2513 | key = old_key; |
c9839a11 | 2514 | else { |
0a14ab41 | 2515 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2516 | if (!key) |
ca9142b8 | 2517 | return NULL; |
970d0f1b | 2518 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2519 | } |
2520 | ||
75d262c2 | 2521 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2522 | key->bdaddr_type = addr_type; |
2523 | memcpy(key->val, tk, sizeof(key->val)); | |
2524 | key->authenticated = authenticated; | |
2525 | key->ediv = ediv; | |
fe39c7b2 | 2526 | key->rand = rand; |
c9839a11 VCG |
2527 | key->enc_size = enc_size; |
2528 | key->type = type; | |
75d262c2 | 2529 | |
ca9142b8 | 2530 | return key; |
75d262c2 VCG |
2531 | } |
2532 | ||
ca9142b8 JH |
2533 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2534 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2535 | { |
2536 | struct smp_irk *irk; | |
2537 | ||
2538 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2539 | if (!irk) { | |
2540 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2541 | if (!irk) | |
ca9142b8 | 2542 | return NULL; |
970c4e46 JH |
2543 | |
2544 | bacpy(&irk->bdaddr, bdaddr); | |
2545 | irk->addr_type = addr_type; | |
2546 | ||
adae20cb | 2547 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2548 | } |
2549 | ||
2550 | memcpy(irk->val, val, 16); | |
2551 | bacpy(&irk->rpa, rpa); | |
2552 | ||
ca9142b8 | 2553 | return irk; |
970c4e46 JH |
2554 | } |
2555 | ||
55ed8ca1 JH |
2556 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2557 | { | |
2558 | struct link_key *key; | |
2559 | ||
2560 | key = hci_find_link_key(hdev, bdaddr); | |
2561 | if (!key) | |
2562 | return -ENOENT; | |
2563 | ||
6ed93dc6 | 2564 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2565 | |
0378b597 JH |
2566 | list_del_rcu(&key->list); |
2567 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2568 | |
2569 | return 0; | |
2570 | } | |
2571 | ||
e0b2b27e | 2572 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2573 | { |
970d0f1b | 2574 | struct smp_ltk *k; |
c51ffa0b | 2575 | int removed = 0; |
b899efaf | 2576 | |
970d0f1b | 2577 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2578 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2579 | continue; |
2580 | ||
6ed93dc6 | 2581 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2582 | |
970d0f1b JH |
2583 | list_del_rcu(&k->list); |
2584 | kfree_rcu(k, rcu); | |
c51ffa0b | 2585 | removed++; |
b899efaf VCG |
2586 | } |
2587 | ||
c51ffa0b | 2588 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2589 | } |
2590 | ||
a7ec7338 JH |
2591 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2592 | { | |
adae20cb | 2593 | struct smp_irk *k; |
a7ec7338 | 2594 | |
adae20cb | 2595 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2596 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2597 | continue; | |
2598 | ||
2599 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2600 | ||
adae20cb JH |
2601 | list_del_rcu(&k->list); |
2602 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2603 | } |
2604 | } | |
2605 | ||
55e76b38 JH |
2606 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2607 | { | |
2608 | struct smp_ltk *k; | |
4ba9faf3 | 2609 | struct smp_irk *irk; |
55e76b38 JH |
2610 | u8 addr_type; |
2611 | ||
2612 | if (type == BDADDR_BREDR) { | |
2613 | if (hci_find_link_key(hdev, bdaddr)) | |
2614 | return true; | |
2615 | return false; | |
2616 | } | |
2617 | ||
2618 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2619 | if (type == BDADDR_LE_PUBLIC) | |
2620 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2621 | else | |
2622 | addr_type = ADDR_LE_DEV_RANDOM; | |
2623 | ||
4ba9faf3 JH |
2624 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2625 | if (irk) { | |
2626 | bdaddr = &irk->bdaddr; | |
2627 | addr_type = irk->addr_type; | |
2628 | } | |
2629 | ||
55e76b38 JH |
2630 | rcu_read_lock(); |
2631 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2632 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2633 | rcu_read_unlock(); | |
55e76b38 | 2634 | return true; |
87c8b28d | 2635 | } |
55e76b38 JH |
2636 | } |
2637 | rcu_read_unlock(); | |
2638 | ||
2639 | return false; | |
2640 | } | |
2641 | ||
6bd32326 | 2642 | /* HCI command timer function */ |
65cc2b49 | 2643 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2644 | { |
65cc2b49 MH |
2645 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2646 | cmd_timer.work); | |
6bd32326 | 2647 | |
bda4f23a AE |
2648 | if (hdev->sent_cmd) { |
2649 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2650 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2651 | ||
2064ee33 | 2652 | bt_dev_err(hdev, "command 0x%4.4x tx timeout", opcode); |
bda4f23a | 2653 | } else { |
2064ee33 | 2654 | bt_dev_err(hdev, "command tx timeout"); |
bda4f23a AE |
2655 | } |
2656 | ||
e2bef384 RJ |
2657 | if (hdev->cmd_timeout) |
2658 | hdev->cmd_timeout(hdev); | |
2659 | ||
6bd32326 | 2660 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2661 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2662 | } |
2663 | ||
2763eda6 | 2664 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2665 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2666 | { |
2667 | struct oob_data *data; | |
2668 | ||
6928a924 JH |
2669 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2670 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2671 | continue; | |
2672 | if (data->bdaddr_type != bdaddr_type) | |
2673 | continue; | |
2674 | return data; | |
2675 | } | |
2763eda6 SJ |
2676 | |
2677 | return NULL; | |
2678 | } | |
2679 | ||
6928a924 JH |
2680 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2681 | u8 bdaddr_type) | |
2763eda6 SJ |
2682 | { |
2683 | struct oob_data *data; | |
2684 | ||
6928a924 | 2685 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2686 | if (!data) |
2687 | return -ENOENT; | |
2688 | ||
6928a924 | 2689 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2690 | |
2691 | list_del(&data->list); | |
2692 | kfree(data); | |
2693 | ||
2694 | return 0; | |
2695 | } | |
2696 | ||
35f7498a | 2697 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2698 | { |
2699 | struct oob_data *data, *n; | |
2700 | ||
2701 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2702 | list_del(&data->list); | |
2703 | kfree(data); | |
2704 | } | |
2763eda6 SJ |
2705 | } |
2706 | ||
0798872e | 2707 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2708 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2709 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2710 | { |
2711 | struct oob_data *data; | |
2712 | ||
6928a924 | 2713 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2714 | if (!data) { |
0a14ab41 | 2715 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2716 | if (!data) |
2717 | return -ENOMEM; | |
2718 | ||
2719 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2720 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2721 | list_add(&data->list, &hdev->remote_oob_data); |
2722 | } | |
2723 | ||
81328d5c JH |
2724 | if (hash192 && rand192) { |
2725 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2726 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2727 | if (hash256 && rand256) |
2728 | data->present = 0x03; | |
81328d5c JH |
2729 | } else { |
2730 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2731 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2732 | if (hash256 && rand256) |
2733 | data->present = 0x02; | |
2734 | else | |
2735 | data->present = 0x00; | |
0798872e MH |
2736 | } |
2737 | ||
81328d5c JH |
2738 | if (hash256 && rand256) { |
2739 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2740 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2741 | } else { | |
2742 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2743 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2744 | if (hash192 && rand192) |
2745 | data->present = 0x01; | |
81328d5c | 2746 | } |
0798872e | 2747 | |
6ed93dc6 | 2748 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2749 | |
2750 | return 0; | |
2751 | } | |
2752 | ||
d2609b34 FG |
2753 | /* This function requires the caller holds hdev->lock */ |
2754 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2755 | { | |
2756 | struct adv_info *adv_instance; | |
2757 | ||
2758 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2759 | if (adv_instance->instance == instance) | |
2760 | return adv_instance; | |
2761 | } | |
2762 | ||
2763 | return NULL; | |
2764 | } | |
2765 | ||
2766 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
2767 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
2768 | { | |
d2609b34 FG |
2769 | struct adv_info *cur_instance; |
2770 | ||
2771 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2772 | if (!cur_instance) | |
2773 | return NULL; | |
2774 | ||
2775 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2776 | struct adv_info, list)) | |
2777 | return list_first_entry(&hdev->adv_instances, | |
2778 | struct adv_info, list); | |
2779 | else | |
2780 | return list_next_entry(cur_instance, list); | |
2781 | } | |
2782 | ||
2783 | /* This function requires the caller holds hdev->lock */ | |
2784 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2785 | { | |
2786 | struct adv_info *adv_instance; | |
2787 | ||
2788 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2789 | if (!adv_instance) | |
2790 | return -ENOENT; | |
2791 | ||
2792 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2793 | ||
cab054ab JH |
2794 | if (hdev->cur_adv_instance == instance) { |
2795 | if (hdev->adv_instance_timeout) { | |
2796 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2797 | hdev->adv_instance_timeout = 0; | |
2798 | } | |
2799 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
2800 | } |
2801 | ||
a73c046a JK |
2802 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
2803 | ||
d2609b34 FG |
2804 | list_del(&adv_instance->list); |
2805 | kfree(adv_instance); | |
2806 | ||
2807 | hdev->adv_instance_cnt--; | |
2808 | ||
2809 | return 0; | |
2810 | } | |
2811 | ||
a73c046a JK |
2812 | void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired) |
2813 | { | |
2814 | struct adv_info *adv_instance, *n; | |
2815 | ||
2816 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) | |
2817 | adv_instance->rpa_expired = rpa_expired; | |
2818 | } | |
2819 | ||
d2609b34 FG |
2820 | /* This function requires the caller holds hdev->lock */ |
2821 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2822 | { | |
2823 | struct adv_info *adv_instance, *n; | |
2824 | ||
5d900e46 FG |
2825 | if (hdev->adv_instance_timeout) { |
2826 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2827 | hdev->adv_instance_timeout = 0; | |
2828 | } | |
2829 | ||
d2609b34 | 2830 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
a73c046a | 2831 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); |
d2609b34 FG |
2832 | list_del(&adv_instance->list); |
2833 | kfree(adv_instance); | |
2834 | } | |
2835 | ||
2836 | hdev->adv_instance_cnt = 0; | |
cab054ab | 2837 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
2838 | } |
2839 | ||
a73c046a JK |
2840 | static void adv_instance_rpa_expired(struct work_struct *work) |
2841 | { | |
2842 | struct adv_info *adv_instance = container_of(work, struct adv_info, | |
2843 | rpa_expired_cb.work); | |
2844 | ||
2845 | BT_DBG(""); | |
2846 | ||
2847 | adv_instance->rpa_expired = true; | |
2848 | } | |
2849 | ||
d2609b34 FG |
2850 | /* This function requires the caller holds hdev->lock */ |
2851 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2852 | u16 adv_data_len, u8 *adv_data, | |
2853 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2854 | u16 timeout, u16 duration) | |
2855 | { | |
2856 | struct adv_info *adv_instance; | |
2857 | ||
2858 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2859 | if (adv_instance) { | |
2860 | memset(adv_instance->adv_data, 0, | |
2861 | sizeof(adv_instance->adv_data)); | |
2862 | memset(adv_instance->scan_rsp_data, 0, | |
2863 | sizeof(adv_instance->scan_rsp_data)); | |
2864 | } else { | |
1d0fac2c | 2865 | if (hdev->adv_instance_cnt >= hdev->le_num_of_adv_sets || |
d2609b34 FG |
2866 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) |
2867 | return -EOVERFLOW; | |
2868 | ||
39ecfad6 | 2869 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2870 | if (!adv_instance) |
2871 | return -ENOMEM; | |
2872 | ||
fffd38bc | 2873 | adv_instance->pending = true; |
d2609b34 FG |
2874 | adv_instance->instance = instance; |
2875 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2876 | hdev->adv_instance_cnt++; | |
2877 | } | |
2878 | ||
2879 | adv_instance->flags = flags; | |
2880 | adv_instance->adv_data_len = adv_data_len; | |
2881 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2882 | ||
2883 | if (adv_data_len) | |
2884 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2885 | ||
2886 | if (scan_rsp_len) | |
2887 | memcpy(adv_instance->scan_rsp_data, | |
2888 | scan_rsp_data, scan_rsp_len); | |
2889 | ||
2890 | adv_instance->timeout = timeout; | |
5d900e46 | 2891 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2892 | |
2893 | if (duration == 0) | |
2894 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2895 | else | |
2896 | adv_instance->duration = duration; | |
2897 | ||
de181e88 JK |
2898 | adv_instance->tx_power = HCI_TX_POWER_INVALID; |
2899 | ||
a73c046a JK |
2900 | INIT_DELAYED_WORK(&adv_instance->rpa_expired_cb, |
2901 | adv_instance_rpa_expired); | |
2902 | ||
d2609b34 FG |
2903 | BT_DBG("%s for %dMR", hdev->name, instance); |
2904 | ||
2905 | return 0; | |
2906 | } | |
2907 | ||
dcc36c16 | 2908 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2909 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2910 | { |
8035ded4 | 2911 | struct bdaddr_list *b; |
b2a66aad | 2912 | |
dcc36c16 | 2913 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2914 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2915 | return b; |
b9ee0a78 | 2916 | } |
b2a66aad AJ |
2917 | |
2918 | return NULL; | |
2919 | } | |
2920 | ||
b950aa88 AN |
2921 | struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( |
2922 | struct list_head *bdaddr_list, bdaddr_t *bdaddr, | |
2923 | u8 type) | |
2924 | { | |
2925 | struct bdaddr_list_with_irk *b; | |
2926 | ||
2927 | list_for_each_entry(b, bdaddr_list, list) { | |
2928 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
2929 | return b; | |
2930 | } | |
2931 | ||
2932 | return NULL; | |
2933 | } | |
2934 | ||
dcc36c16 | 2935 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2936 | { |
7eb7404f | 2937 | struct bdaddr_list *b, *n; |
b2a66aad | 2938 | |
7eb7404f GT |
2939 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2940 | list_del(&b->list); | |
b2a66aad AJ |
2941 | kfree(b); |
2942 | } | |
b2a66aad AJ |
2943 | } |
2944 | ||
dcc36c16 | 2945 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2946 | { |
2947 | struct bdaddr_list *entry; | |
b2a66aad | 2948 | |
b9ee0a78 | 2949 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2950 | return -EBADF; |
2951 | ||
dcc36c16 | 2952 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2953 | return -EEXIST; |
b2a66aad | 2954 | |
27f70f3e | 2955 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2956 | if (!entry) |
2957 | return -ENOMEM; | |
b2a66aad AJ |
2958 | |
2959 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2960 | entry->bdaddr_type = type; |
b2a66aad | 2961 | |
dcc36c16 | 2962 | list_add(&entry->list, list); |
b2a66aad | 2963 | |
2a8357f2 | 2964 | return 0; |
b2a66aad AJ |
2965 | } |
2966 | ||
b950aa88 AN |
2967 | int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
2968 | u8 type, u8 *peer_irk, u8 *local_irk) | |
2969 | { | |
2970 | struct bdaddr_list_with_irk *entry; | |
2971 | ||
2972 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
2973 | return -EBADF; | |
2974 | ||
2975 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) | |
2976 | return -EEXIST; | |
2977 | ||
2978 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
2979 | if (!entry) | |
2980 | return -ENOMEM; | |
2981 | ||
2982 | bacpy(&entry->bdaddr, bdaddr); | |
2983 | entry->bdaddr_type = type; | |
2984 | ||
2985 | if (peer_irk) | |
2986 | memcpy(entry->peer_irk, peer_irk, 16); | |
2987 | ||
2988 | if (local_irk) | |
2989 | memcpy(entry->local_irk, local_irk, 16); | |
2990 | ||
2991 | list_add(&entry->list, list); | |
2992 | ||
2993 | return 0; | |
2994 | } | |
2995 | ||
dcc36c16 | 2996 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2997 | { |
2998 | struct bdaddr_list *entry; | |
b2a66aad | 2999 | |
35f7498a | 3000 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 3001 | hci_bdaddr_list_clear(list); |
35f7498a JH |
3002 | return 0; |
3003 | } | |
b2a66aad | 3004 | |
dcc36c16 | 3005 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
3006 | if (!entry) |
3007 | return -ENOENT; | |
3008 | ||
3009 | list_del(&entry->list); | |
3010 | kfree(entry); | |
3011 | ||
3012 | return 0; | |
3013 | } | |
3014 | ||
b950aa88 AN |
3015 | int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, |
3016 | u8 type) | |
3017 | { | |
3018 | struct bdaddr_list_with_irk *entry; | |
3019 | ||
3020 | if (!bacmp(bdaddr, BDADDR_ANY)) { | |
3021 | hci_bdaddr_list_clear(list); | |
3022 | return 0; | |
3023 | } | |
3024 | ||
3025 | entry = hci_bdaddr_list_lookup_with_irk(list, bdaddr, type); | |
3026 | if (!entry) | |
3027 | return -ENOENT; | |
3028 | ||
3029 | list_del(&entry->list); | |
3030 | kfree(entry); | |
3031 | ||
3032 | return 0; | |
3033 | } | |
3034 | ||
15819a70 AG |
3035 | /* This function requires the caller holds hdev->lock */ |
3036 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3037 | bdaddr_t *addr, u8 addr_type) | |
3038 | { | |
3039 | struct hci_conn_params *params; | |
3040 | ||
3041 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
3042 | if (bacmp(¶ms->addr, addr) == 0 && | |
3043 | params->addr_type == addr_type) { | |
3044 | return params; | |
3045 | } | |
3046 | } | |
3047 | ||
3048 | return NULL; | |
3049 | } | |
3050 | ||
4b10966f | 3051 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
3052 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
3053 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 3054 | { |
912b42ef | 3055 | struct hci_conn_params *param; |
a9b0a04c | 3056 | |
501f8827 | 3057 | list_for_each_entry(param, list, action) { |
912b42ef JH |
3058 | if (bacmp(¶m->addr, addr) == 0 && |
3059 | param->addr_type == addr_type) | |
3060 | return param; | |
4b10966f MH |
3061 | } |
3062 | ||
3063 | return NULL; | |
a9b0a04c AG |
3064 | } |
3065 | ||
15819a70 | 3066 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
3067 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
3068 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
3069 | { |
3070 | struct hci_conn_params *params; | |
3071 | ||
3072 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 3073 | if (params) |
51d167c0 | 3074 | return params; |
15819a70 AG |
3075 | |
3076 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3077 | if (!params) { | |
2064ee33 | 3078 | bt_dev_err(hdev, "out of memory"); |
51d167c0 | 3079 | return NULL; |
15819a70 AG |
3080 | } |
3081 | ||
3082 | bacpy(¶ms->addr, addr); | |
3083 | params->addr_type = addr_type; | |
cef952ce AG |
3084 | |
3085 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 3086 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 3087 | |
bf5b3c8b MH |
3088 | params->conn_min_interval = hdev->le_conn_min_interval; |
3089 | params->conn_max_interval = hdev->le_conn_max_interval; | |
3090 | params->conn_latency = hdev->le_conn_latency; | |
3091 | params->supervision_timeout = hdev->le_supv_timeout; | |
3092 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
3093 | ||
3094 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3095 | ||
51d167c0 | 3096 | return params; |
bf5b3c8b MH |
3097 | } |
3098 | ||
f6c63249 | 3099 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 3100 | { |
f8aaf9b6 | 3101 | if (params->conn) { |
f161dd41 | 3102 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
3103 | hci_conn_put(params->conn); |
3104 | } | |
f161dd41 | 3105 | |
95305baa | 3106 | list_del(¶ms->action); |
15819a70 AG |
3107 | list_del(¶ms->list); |
3108 | kfree(params); | |
f6c63249 JH |
3109 | } |
3110 | ||
3111 | /* This function requires the caller holds hdev->lock */ | |
3112 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3113 | { | |
3114 | struct hci_conn_params *params; | |
3115 | ||
3116 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3117 | if (!params) | |
3118 | return; | |
3119 | ||
3120 | hci_conn_params_free(params); | |
15819a70 | 3121 | |
95305baa JH |
3122 | hci_update_background_scan(hdev); |
3123 | ||
15819a70 AG |
3124 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
3125 | } | |
3126 | ||
3127 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 3128 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
3129 | { |
3130 | struct hci_conn_params *params, *tmp; | |
3131 | ||
3132 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
3133 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
3134 | continue; | |
f75113a2 JP |
3135 | |
3136 | /* If trying to estabilish one time connection to disabled | |
3137 | * device, leave the params, but mark them as just once. | |
3138 | */ | |
3139 | if (params->explicit_connect) { | |
3140 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
3141 | continue; | |
3142 | } | |
3143 | ||
15819a70 AG |
3144 | list_del(¶ms->list); |
3145 | kfree(params); | |
3146 | } | |
3147 | ||
55af49a8 | 3148 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
3149 | } |
3150 | ||
3151 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 3152 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 3153 | { |
15819a70 | 3154 | struct hci_conn_params *params, *tmp; |
77a77a30 | 3155 | |
f6c63249 JH |
3156 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
3157 | hci_conn_params_free(params); | |
77a77a30 | 3158 | |
15819a70 | 3159 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
3160 | } |
3161 | ||
a1f4c318 JH |
3162 | /* Copy the Identity Address of the controller. |
3163 | * | |
3164 | * If the controller has a public BD_ADDR, then by default use that one. | |
3165 | * If this is a LE only controller without a public address, default to | |
3166 | * the static random address. | |
3167 | * | |
3168 | * For debugging purposes it is possible to force controllers with a | |
3169 | * public address to use the static random address instead. | |
50b5b952 MH |
3170 | * |
3171 | * In case BR/EDR has been disabled on a dual-mode controller and | |
3172 | * userspace has configured a static address, then that address | |
3173 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
3174 | */ |
3175 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3176 | u8 *bdaddr_type) | |
3177 | { | |
b7cb93e5 | 3178 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 3179 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 3180 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 3181 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
3182 | bacpy(bdaddr, &hdev->static_addr); |
3183 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3184 | } else { | |
3185 | bacpy(bdaddr, &hdev->bdaddr); | |
3186 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3187 | } | |
3188 | } | |
3189 | ||
9be0dab7 DH |
3190 | /* Alloc HCI device */ |
3191 | struct hci_dev *hci_alloc_dev(void) | |
3192 | { | |
3193 | struct hci_dev *hdev; | |
3194 | ||
27f70f3e | 3195 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3196 | if (!hdev) |
3197 | return NULL; | |
3198 | ||
b1b813d4 DH |
3199 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3200 | hdev->esco_type = (ESCO_HV1); | |
3201 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3202 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3203 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3204 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3205 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3206 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
3207 | hdev->adv_instance_cnt = 0; |
3208 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 3209 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 3210 | |
b1b813d4 DH |
3211 | hdev->sniff_max_interval = 800; |
3212 | hdev->sniff_min_interval = 80; | |
3213 | ||
3f959d46 | 3214 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3215 | hdev->le_adv_min_interval = 0x0800; |
3216 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3217 | hdev->le_scan_interval = 0x0060; |
3218 | hdev->le_scan_window = 0x0030; | |
b48c3b59 JH |
3219 | hdev->le_conn_min_interval = 0x0018; |
3220 | hdev->le_conn_max_interval = 0x0028; | |
04fb7d90 MH |
3221 | hdev->le_conn_latency = 0x0000; |
3222 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
3223 | hdev->le_def_tx_len = 0x001b; |
3224 | hdev->le_def_tx_time = 0x0148; | |
3225 | hdev->le_max_tx_len = 0x001b; | |
3226 | hdev->le_max_tx_time = 0x0148; | |
3227 | hdev->le_max_rx_len = 0x001b; | |
3228 | hdev->le_max_rx_time = 0x0148; | |
30d65e08 MK |
3229 | hdev->le_max_key_size = SMP_MAX_ENC_KEY_SIZE; |
3230 | hdev->le_min_key_size = SMP_MIN_ENC_KEY_SIZE; | |
6decb5b4 JK |
3231 | hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M; |
3232 | hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M; | |
1d0fac2c | 3233 | hdev->le_num_of_adv_sets = HCI_MAX_ADV_INSTANCES; |
bef64738 | 3234 | |
d6bfd59c | 3235 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3236 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3237 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3238 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
302975cb | 3239 | hdev->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT; |
58a96fc3 | 3240 | hdev->min_enc_key_size = HCI_MIN_ENC_KEY_SIZE; |
d6bfd59c | 3241 | |
b1b813d4 DH |
3242 | mutex_init(&hdev->lock); |
3243 | mutex_init(&hdev->req_lock); | |
3244 | ||
3245 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3246 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3247 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3248 | INIT_LIST_HEAD(&hdev->uuids); |
3249 | INIT_LIST_HEAD(&hdev->link_keys); | |
3250 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3251 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3252 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3253 | INIT_LIST_HEAD(&hdev->le_white_list); |
cfdb0c2d | 3254 | INIT_LIST_HEAD(&hdev->le_resolv_list); |
15819a70 | 3255 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3256 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3257 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3258 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 3259 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
3260 | |
3261 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3262 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3263 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3264 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 3265 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 3266 | |
b1b813d4 | 3267 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 3268 | |
b1b813d4 DH |
3269 | skb_queue_head_init(&hdev->rx_q); |
3270 | skb_queue_head_init(&hdev->cmd_q); | |
3271 | skb_queue_head_init(&hdev->raw_q); | |
3272 | ||
3273 | init_waitqueue_head(&hdev->req_wait_q); | |
3274 | ||
65cc2b49 | 3275 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3276 | |
5fc16cc4 JH |
3277 | hci_request_setup(hdev); |
3278 | ||
b1b813d4 DH |
3279 | hci_init_sysfs(hdev); |
3280 | discovery_init(hdev); | |
9be0dab7 DH |
3281 | |
3282 | return hdev; | |
3283 | } | |
3284 | EXPORT_SYMBOL(hci_alloc_dev); | |
3285 | ||
3286 | /* Free HCI device */ | |
3287 | void hci_free_dev(struct hci_dev *hdev) | |
3288 | { | |
9be0dab7 DH |
3289 | /* will free via device release */ |
3290 | put_device(&hdev->dev); | |
3291 | } | |
3292 | EXPORT_SYMBOL(hci_free_dev); | |
3293 | ||
1da177e4 LT |
3294 | /* Register HCI device */ |
3295 | int hci_register_dev(struct hci_dev *hdev) | |
3296 | { | |
b1b813d4 | 3297 | int id, error; |
1da177e4 | 3298 | |
74292d5a | 3299 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3300 | return -EINVAL; |
3301 | ||
08add513 MM |
3302 | /* Do not allow HCI_AMP devices to register at index 0, |
3303 | * so the index can be used as the AMP controller ID. | |
3304 | */ | |
3df92b31 | 3305 | switch (hdev->dev_type) { |
ca8bee5d | 3306 | case HCI_PRIMARY: |
3df92b31 SL |
3307 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
3308 | break; | |
3309 | case HCI_AMP: | |
3310 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3311 | break; | |
3312 | default: | |
3313 | return -EINVAL; | |
1da177e4 | 3314 | } |
8e87d142 | 3315 | |
3df92b31 SL |
3316 | if (id < 0) |
3317 | return id; | |
3318 | ||
1da177e4 LT |
3319 | sprintf(hdev->name, "hci%d", id); |
3320 | hdev->id = id; | |
2d8b3a11 AE |
3321 | |
3322 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3323 | ||
29e2dd0d | 3324 | hdev->workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, hdev->name); |
33ca954d DH |
3325 | if (!hdev->workqueue) { |
3326 | error = -ENOMEM; | |
3327 | goto err; | |
3328 | } | |
f48fd9c8 | 3329 | |
29e2dd0d TH |
3330 | hdev->req_workqueue = alloc_ordered_workqueue("%s", WQ_HIGHPRI, |
3331 | hdev->name); | |
6ead1bbc JH |
3332 | if (!hdev->req_workqueue) { |
3333 | destroy_workqueue(hdev->workqueue); | |
3334 | error = -ENOMEM; | |
3335 | goto err; | |
3336 | } | |
3337 | ||
0153e2ec MH |
3338 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3339 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3340 | ||
bdc3e0f1 MH |
3341 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3342 | ||
3343 | error = device_add(&hdev->dev); | |
33ca954d | 3344 | if (error < 0) |
54506918 | 3345 | goto err_wqueue; |
1da177e4 | 3346 | |
6d5d2ee6 HK |
3347 | hci_leds_init(hdev); |
3348 | ||
611b30f7 | 3349 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3350 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3351 | hdev); | |
611b30f7 MH |
3352 | if (hdev->rfkill) { |
3353 | if (rfkill_register(hdev->rfkill) < 0) { | |
3354 | rfkill_destroy(hdev->rfkill); | |
3355 | hdev->rfkill = NULL; | |
3356 | } | |
3357 | } | |
3358 | ||
5e130367 | 3359 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3360 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3361 | |
a1536da2 MH |
3362 | hci_dev_set_flag(hdev, HCI_SETUP); |
3363 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3364 | |
ca8bee5d | 3365 | if (hdev->dev_type == HCI_PRIMARY) { |
56f87901 JH |
3366 | /* Assume BR/EDR support until proven otherwise (such as |
3367 | * through reading supported features during init. | |
3368 | */ | |
a1536da2 | 3369 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3370 | } |
ce2be9ac | 3371 | |
fcee3377 GP |
3372 | write_lock(&hci_dev_list_lock); |
3373 | list_add(&hdev->list, &hci_dev_list); | |
3374 | write_unlock(&hci_dev_list_lock); | |
3375 | ||
4a964404 MH |
3376 | /* Devices that are marked for raw-only usage are unconfigured |
3377 | * and should not be included in normal operation. | |
fee746b0 MH |
3378 | */ |
3379 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3380 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3381 | |
05fcd4c4 | 3382 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3383 | hci_dev_hold(hdev); |
1da177e4 | 3384 | |
19202573 | 3385 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3386 | |
1da177e4 | 3387 | return id; |
f48fd9c8 | 3388 | |
33ca954d | 3389 | err_wqueue: |
5085cf84 | 3390 | debugfs_remove_recursive(hdev->debugfs); |
33ca954d | 3391 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3392 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3393 | err: |
3df92b31 | 3394 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3395 | |
33ca954d | 3396 | return error; |
1da177e4 LT |
3397 | } |
3398 | EXPORT_SYMBOL(hci_register_dev); | |
3399 | ||
3400 | /* Unregister HCI device */ | |
59735631 | 3401 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3402 | { |
c13854ce | 3403 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3404 | |
a1536da2 | 3405 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3406 | |
f20d09d5 | 3407 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3408 | list_del(&hdev->list); |
f20d09d5 | 3409 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 3410 | |
b9b5ef18 GP |
3411 | cancel_work_sync(&hdev->power_on); |
3412 | ||
bf389cab JS |
3413 | hci_dev_do_close(hdev); |
3414 | ||
ab81cbf9 | 3415 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3416 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3417 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3418 | hci_dev_lock(hdev); |
744cf19e | 3419 | mgmt_index_removed(hdev); |
09fd0de5 | 3420 | hci_dev_unlock(hdev); |
56e5cb86 | 3421 | } |
ab81cbf9 | 3422 | |
2e58ef3e JH |
3423 | /* mgmt_index_removed should take care of emptying the |
3424 | * pending list */ | |
3425 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3426 | ||
05fcd4c4 | 3427 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3428 | |
611b30f7 MH |
3429 | if (hdev->rfkill) { |
3430 | rfkill_unregister(hdev->rfkill); | |
3431 | rfkill_destroy(hdev->rfkill); | |
3432 | } | |
3433 | ||
bdc3e0f1 | 3434 | device_del(&hdev->dev); |
d65a9172 TH |
3435 | /* Actual cleanup is deferred until hci_cleanup_dev(). */ |
3436 | hci_dev_put(hdev); | |
3437 | } | |
3438 | EXPORT_SYMBOL(hci_unregister_dev); | |
147e2d59 | 3439 | |
d65a9172 TH |
3440 | /* Cleanup HCI device */ |
3441 | void hci_cleanup_dev(struct hci_dev *hdev) | |
3442 | { | |
0153e2ec | 3443 | debugfs_remove_recursive(hdev->debugfs); |
5177a838 MH |
3444 | kfree_const(hdev->hw_info); |
3445 | kfree_const(hdev->fw_info); | |
0153e2ec | 3446 | |
f48fd9c8 | 3447 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3448 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3449 | |
09fd0de5 | 3450 | hci_dev_lock(hdev); |
dcc36c16 | 3451 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3452 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3453 | hci_uuids_clear(hdev); |
55ed8ca1 | 3454 | hci_link_keys_clear(hdev); |
b899efaf | 3455 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3456 | hci_smp_irks_clear(hdev); |
2763eda6 | 3457 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3458 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3459 | hci_bdaddr_list_clear(&hdev->le_white_list); |
cfdb0c2d | 3460 | hci_bdaddr_list_clear(&hdev->le_resolv_list); |
373110c5 | 3461 | hci_conn_params_clear_all(hdev); |
22078800 | 3462 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3463 | hci_dev_unlock(hdev); |
e2e0cacb | 3464 | |
d65a9172 | 3465 | ida_simple_remove(&hci_index_ida, hdev->id); |
1da177e4 | 3466 | } |
1da177e4 LT |
3467 | |
3468 | /* Suspend HCI device */ | |
3469 | int hci_suspend_dev(struct hci_dev *hdev) | |
3470 | { | |
05fcd4c4 | 3471 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3472 | return 0; |
3473 | } | |
3474 | EXPORT_SYMBOL(hci_suspend_dev); | |
3475 | ||
3476 | /* Resume HCI device */ | |
3477 | int hci_resume_dev(struct hci_dev *hdev) | |
3478 | { | |
05fcd4c4 | 3479 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3480 | return 0; |
3481 | } | |
3482 | EXPORT_SYMBOL(hci_resume_dev); | |
3483 | ||
75e0569f MH |
3484 | /* Reset HCI device */ |
3485 | int hci_reset_dev(struct hci_dev *hdev) | |
3486 | { | |
1e4b6e91 | 3487 | static const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; |
75e0569f MH |
3488 | struct sk_buff *skb; |
3489 | ||
3490 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3491 | if (!skb) | |
3492 | return -ENOMEM; | |
3493 | ||
d79f34e3 | 3494 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
59ae1d12 | 3495 | skb_put_data(skb, hw_err, 3); |
75e0569f MH |
3496 | |
3497 | /* Send Hardware Error to upper stack */ | |
3498 | return hci_recv_frame(hdev, skb); | |
3499 | } | |
3500 | EXPORT_SYMBOL(hci_reset_dev); | |
3501 | ||
76bca880 | 3502 | /* Receive frame from HCI drivers */ |
e1a26170 | 3503 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3504 | { |
76bca880 | 3505 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3506 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3507 | kfree_skb(skb); |
3508 | return -ENXIO; | |
3509 | } | |
3510 | ||
d79f34e3 MH |
3511 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
3512 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
3513 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
fe806dce MH |
3514 | kfree_skb(skb); |
3515 | return -EINVAL; | |
3516 | } | |
3517 | ||
d82603c6 | 3518 | /* Incoming skb */ |
76bca880 MH |
3519 | bt_cb(skb)->incoming = 1; |
3520 | ||
3521 | /* Time stamp */ | |
3522 | __net_timestamp(skb); | |
3523 | ||
76bca880 | 3524 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3525 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3526 | |
76bca880 MH |
3527 | return 0; |
3528 | } | |
3529 | EXPORT_SYMBOL(hci_recv_frame); | |
3530 | ||
e875ff84 MH |
3531 | /* Receive diagnostic message from HCI drivers */ |
3532 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3533 | { | |
581d6fd6 | 3534 | /* Mark as diagnostic packet */ |
d79f34e3 | 3535 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3536 | |
e875ff84 MH |
3537 | /* Time stamp */ |
3538 | __net_timestamp(skb); | |
3539 | ||
581d6fd6 MH |
3540 | skb_queue_tail(&hdev->rx_q, skb); |
3541 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3542 | |
e875ff84 MH |
3543 | return 0; |
3544 | } | |
3545 | EXPORT_SYMBOL(hci_recv_diag); | |
3546 | ||
5177a838 MH |
3547 | void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...) |
3548 | { | |
3549 | va_list vargs; | |
3550 | ||
3551 | va_start(vargs, fmt); | |
3552 | kfree_const(hdev->hw_info); | |
3553 | hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3554 | va_end(vargs); | |
3555 | } | |
3556 | EXPORT_SYMBOL(hci_set_hw_info); | |
3557 | ||
3558 | void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...) | |
3559 | { | |
3560 | va_list vargs; | |
3561 | ||
3562 | va_start(vargs, fmt); | |
3563 | kfree_const(hdev->fw_info); | |
3564 | hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs); | |
3565 | va_end(vargs); | |
3566 | } | |
3567 | EXPORT_SYMBOL(hci_set_fw_info); | |
3568 | ||
1da177e4 LT |
3569 | /* ---- Interface to upper protocols ---- */ |
3570 | ||
1da177e4 LT |
3571 | int hci_register_cb(struct hci_cb *cb) |
3572 | { | |
3573 | BT_DBG("%p name %s", cb, cb->name); | |
3574 | ||
fba7ecf0 | 3575 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3576 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3577 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3578 | |
3579 | return 0; | |
3580 | } | |
3581 | EXPORT_SYMBOL(hci_register_cb); | |
3582 | ||
3583 | int hci_unregister_cb(struct hci_cb *cb) | |
3584 | { | |
3585 | BT_DBG("%p name %s", cb, cb->name); | |
3586 | ||
fba7ecf0 | 3587 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3588 | list_del(&cb->list); |
fba7ecf0 | 3589 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3590 | |
3591 | return 0; | |
3592 | } | |
3593 | EXPORT_SYMBOL(hci_unregister_cb); | |
3594 | ||
51086991 | 3595 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3596 | { |
cdc52faa MH |
3597 | int err; |
3598 | ||
d79f34e3 MH |
3599 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3600 | skb->len); | |
1da177e4 | 3601 | |
cd82e61c MH |
3602 | /* Time stamp */ |
3603 | __net_timestamp(skb); | |
1da177e4 | 3604 | |
cd82e61c MH |
3605 | /* Send copy to monitor */ |
3606 | hci_send_to_monitor(hdev, skb); | |
3607 | ||
3608 | if (atomic_read(&hdev->promisc)) { | |
3609 | /* Send copy to the sockets */ | |
470fe1b5 | 3610 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3611 | } |
3612 | ||
3613 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3614 | skb_orphan(skb); | |
3615 | ||
73d0d3c8 MH |
3616 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3617 | kfree_skb(skb); | |
3618 | return; | |
3619 | } | |
3620 | ||
cdc52faa MH |
3621 | err = hdev->send(hdev, skb); |
3622 | if (err < 0) { | |
2064ee33 | 3623 | bt_dev_err(hdev, "sending frame failed (%d)", err); |
cdc52faa MH |
3624 | kfree_skb(skb); |
3625 | } | |
1da177e4 LT |
3626 | } |
3627 | ||
1ca3a9d0 | 3628 | /* Send HCI command */ |
07dc93dd JH |
3629 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3630 | const void *param) | |
1ca3a9d0 JH |
3631 | { |
3632 | struct sk_buff *skb; | |
3633 | ||
3634 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3635 | ||
3636 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3637 | if (!skb) { | |
2064ee33 | 3638 | bt_dev_err(hdev, "no memory for command"); |
1ca3a9d0 JH |
3639 | return -ENOMEM; |
3640 | } | |
3641 | ||
49c922bb | 3642 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3643 | * single-command requests. |
3644 | */ | |
44d27137 | 3645 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3646 | |
1da177e4 | 3647 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3648 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3649 | |
3650 | return 0; | |
3651 | } | |
1da177e4 | 3652 | |
d6ee6ad7 LP |
3653 | int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, |
3654 | const void *param) | |
3655 | { | |
3656 | struct sk_buff *skb; | |
3657 | ||
3658 | if (hci_opcode_ogf(opcode) != 0x3f) { | |
3659 | /* A controller receiving a command shall respond with either | |
3660 | * a Command Status Event or a Command Complete Event. | |
3661 | * Therefore, all standard HCI commands must be sent via the | |
3662 | * standard API, using hci_send_cmd or hci_cmd_sync helpers. | |
3663 | * Some vendors do not comply with this rule for vendor-specific | |
3664 | * commands and do not return any event. We want to support | |
3665 | * unresponded commands for such cases only. | |
3666 | */ | |
3667 | bt_dev_err(hdev, "unresponded command not supported"); | |
3668 | return -EINVAL; | |
3669 | } | |
3670 | ||
3671 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3672 | if (!skb) { | |
3673 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", | |
3674 | opcode); | |
3675 | return -ENOMEM; | |
3676 | } | |
3677 | ||
3678 | hci_send_frame(hdev, skb); | |
3679 | ||
3680 | return 0; | |
3681 | } | |
3682 | EXPORT_SYMBOL(__hci_cmd_send); | |
3683 | ||
1da177e4 | 3684 | /* Get data from the previously sent command */ |
a9de9248 | 3685 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3686 | { |
3687 | struct hci_command_hdr *hdr; | |
3688 | ||
3689 | if (!hdev->sent_cmd) | |
3690 | return NULL; | |
3691 | ||
3692 | hdr = (void *) hdev->sent_cmd->data; | |
3693 | ||
a9de9248 | 3694 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3695 | return NULL; |
3696 | ||
f0e09510 | 3697 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3698 | |
3699 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3700 | } | |
3701 | ||
fbef168f LP |
3702 | /* Send HCI command and wait for command commplete event */ |
3703 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3704 | const void *param, u32 timeout) | |
3705 | { | |
3706 | struct sk_buff *skb; | |
3707 | ||
3708 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3709 | return ERR_PTR(-ENETDOWN); | |
3710 | ||
3711 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3712 | ||
b504430c | 3713 | hci_req_sync_lock(hdev); |
fbef168f | 3714 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
b504430c | 3715 | hci_req_sync_unlock(hdev); |
fbef168f LP |
3716 | |
3717 | return skb; | |
3718 | } | |
3719 | EXPORT_SYMBOL(hci_cmd_sync); | |
3720 | ||
1da177e4 LT |
3721 | /* Send ACL data */ |
3722 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3723 | { | |
3724 | struct hci_acl_hdr *hdr; | |
3725 | int len = skb->len; | |
3726 | ||
badff6d0 ACM |
3727 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3728 | skb_reset_transport_header(skb); | |
9c70220b | 3729 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3730 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3731 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3732 | } |
3733 | ||
ee22be7e | 3734 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3735 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3736 | { |
ee22be7e | 3737 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3738 | struct hci_dev *hdev = conn->hdev; |
3739 | struct sk_buff *list; | |
3740 | ||
087bfd99 GP |
3741 | skb->len = skb_headlen(skb); |
3742 | skb->data_len = 0; | |
3743 | ||
d79f34e3 | 3744 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3745 | |
3746 | switch (hdev->dev_type) { | |
ca8bee5d | 3747 | case HCI_PRIMARY: |
204a6e54 AE |
3748 | hci_add_acl_hdr(skb, conn->handle, flags); |
3749 | break; | |
3750 | case HCI_AMP: | |
3751 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3752 | break; | |
3753 | default: | |
2064ee33 | 3754 | bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); |
204a6e54 AE |
3755 | return; |
3756 | } | |
087bfd99 | 3757 | |
70f23020 AE |
3758 | list = skb_shinfo(skb)->frag_list; |
3759 | if (!list) { | |
1da177e4 LT |
3760 | /* Non fragmented */ |
3761 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3762 | ||
73d80deb | 3763 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3764 | } else { |
3765 | /* Fragmented */ | |
3766 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3767 | ||
3768 | skb_shinfo(skb)->frag_list = NULL; | |
3769 | ||
9cfd5a23 JR |
3770 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3771 | * here because of 6LoWPAN links, as there this function is | |
3772 | * called from softirq and using normal spin lock could cause | |
3773 | * deadlocks. | |
3774 | */ | |
3775 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3776 | |
73d80deb | 3777 | __skb_queue_tail(queue, skb); |
e702112f AE |
3778 | |
3779 | flags &= ~ACL_START; | |
3780 | flags |= ACL_CONT; | |
1da177e4 LT |
3781 | do { |
3782 | skb = list; list = list->next; | |
8e87d142 | 3783 | |
d79f34e3 | 3784 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3785 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3786 | |
3787 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3788 | ||
73d80deb | 3789 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3790 | } while (list); |
3791 | ||
9cfd5a23 | 3792 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3793 | } |
73d80deb LAD |
3794 | } |
3795 | ||
3796 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3797 | { | |
ee22be7e | 3798 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3799 | |
f0e09510 | 3800 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3801 | |
ee22be7e | 3802 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3803 | |
3eff45ea | 3804 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3805 | } |
1da177e4 LT |
3806 | |
3807 | /* Send SCO data */ | |
0d861d8b | 3808 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3809 | { |
3810 | struct hci_dev *hdev = conn->hdev; | |
3811 | struct hci_sco_hdr hdr; | |
3812 | ||
3813 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3814 | ||
aca3192c | 3815 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3816 | hdr.dlen = skb->len; |
3817 | ||
badff6d0 ACM |
3818 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3819 | skb_reset_transport_header(skb); | |
9c70220b | 3820 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3821 | |
d79f34e3 | 3822 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3823 | |
1da177e4 | 3824 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3825 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3826 | } |
1da177e4 LT |
3827 | |
3828 | /* ---- HCI TX task (outgoing data) ---- */ | |
3829 | ||
3830 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3831 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3832 | int *quote) | |
1da177e4 LT |
3833 | { |
3834 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3835 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3836 | unsigned int num = 0, min = ~0; |
1da177e4 | 3837 | |
8e87d142 | 3838 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3839 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3840 | |
3841 | rcu_read_lock(); | |
3842 | ||
3843 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3844 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3845 | continue; |
769be974 MH |
3846 | |
3847 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3848 | continue; | |
3849 | ||
1da177e4 LT |
3850 | num++; |
3851 | ||
3852 | if (c->sent < min) { | |
3853 | min = c->sent; | |
3854 | conn = c; | |
3855 | } | |
52087a79 LAD |
3856 | |
3857 | if (hci_conn_num(hdev, type) == num) | |
3858 | break; | |
1da177e4 LT |
3859 | } |
3860 | ||
bf4c6325 GP |
3861 | rcu_read_unlock(); |
3862 | ||
1da177e4 | 3863 | if (conn) { |
6ed58ec5 VT |
3864 | int cnt, q; |
3865 | ||
3866 | switch (conn->type) { | |
3867 | case ACL_LINK: | |
3868 | cnt = hdev->acl_cnt; | |
3869 | break; | |
3870 | case SCO_LINK: | |
3871 | case ESCO_LINK: | |
3872 | cnt = hdev->sco_cnt; | |
3873 | break; | |
3874 | case LE_LINK: | |
3875 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3876 | break; | |
3877 | default: | |
3878 | cnt = 0; | |
2064ee33 | 3879 | bt_dev_err(hdev, "unknown link type %d", conn->type); |
6ed58ec5 VT |
3880 | } |
3881 | ||
3882 | q = cnt / num; | |
1da177e4 LT |
3883 | *quote = q ? q : 1; |
3884 | } else | |
3885 | *quote = 0; | |
3886 | ||
3887 | BT_DBG("conn %p quote %d", conn, *quote); | |
3888 | return conn; | |
3889 | } | |
3890 | ||
6039aa73 | 3891 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3892 | { |
3893 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3894 | struct hci_conn *c; |
1da177e4 | 3895 | |
2064ee33 | 3896 | bt_dev_err(hdev, "link tx timeout"); |
1da177e4 | 3897 | |
bf4c6325 GP |
3898 | rcu_read_lock(); |
3899 | ||
1da177e4 | 3900 | /* Kill stalled connections */ |
bf4c6325 | 3901 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3902 | if (c->type == type && c->sent) { |
2064ee33 MH |
3903 | bt_dev_err(hdev, "killing stalled connection %pMR", |
3904 | &c->dst); | |
bed71748 | 3905 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3906 | } |
3907 | } | |
bf4c6325 GP |
3908 | |
3909 | rcu_read_unlock(); | |
1da177e4 LT |
3910 | } |
3911 | ||
6039aa73 GP |
3912 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3913 | int *quote) | |
1da177e4 | 3914 | { |
73d80deb LAD |
3915 | struct hci_conn_hash *h = &hdev->conn_hash; |
3916 | struct hci_chan *chan = NULL; | |
abc5de8f | 3917 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3918 | struct hci_conn *conn; |
73d80deb LAD |
3919 | int cnt, q, conn_num = 0; |
3920 | ||
3921 | BT_DBG("%s", hdev->name); | |
3922 | ||
bf4c6325 GP |
3923 | rcu_read_lock(); |
3924 | ||
3925 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3926 | struct hci_chan *tmp; |
3927 | ||
3928 | if (conn->type != type) | |
3929 | continue; | |
3930 | ||
3931 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3932 | continue; | |
3933 | ||
3934 | conn_num++; | |
3935 | ||
8192edef | 3936 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3937 | struct sk_buff *skb; |
3938 | ||
3939 | if (skb_queue_empty(&tmp->data_q)) | |
3940 | continue; | |
3941 | ||
3942 | skb = skb_peek(&tmp->data_q); | |
3943 | if (skb->priority < cur_prio) | |
3944 | continue; | |
3945 | ||
3946 | if (skb->priority > cur_prio) { | |
3947 | num = 0; | |
3948 | min = ~0; | |
3949 | cur_prio = skb->priority; | |
3950 | } | |
3951 | ||
3952 | num++; | |
3953 | ||
3954 | if (conn->sent < min) { | |
3955 | min = conn->sent; | |
3956 | chan = tmp; | |
3957 | } | |
3958 | } | |
3959 | ||
3960 | if (hci_conn_num(hdev, type) == conn_num) | |
3961 | break; | |
3962 | } | |
3963 | ||
bf4c6325 GP |
3964 | rcu_read_unlock(); |
3965 | ||
73d80deb LAD |
3966 | if (!chan) |
3967 | return NULL; | |
3968 | ||
3969 | switch (chan->conn->type) { | |
3970 | case ACL_LINK: | |
3971 | cnt = hdev->acl_cnt; | |
3972 | break; | |
bd1eb66b AE |
3973 | case AMP_LINK: |
3974 | cnt = hdev->block_cnt; | |
3975 | break; | |
73d80deb LAD |
3976 | case SCO_LINK: |
3977 | case ESCO_LINK: | |
3978 | cnt = hdev->sco_cnt; | |
3979 | break; | |
3980 | case LE_LINK: | |
3981 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3982 | break; | |
3983 | default: | |
3984 | cnt = 0; | |
2064ee33 | 3985 | bt_dev_err(hdev, "unknown link type %d", chan->conn->type); |
73d80deb LAD |
3986 | } |
3987 | ||
3988 | q = cnt / num; | |
3989 | *quote = q ? q : 1; | |
3990 | BT_DBG("chan %p quote %d", chan, *quote); | |
3991 | return chan; | |
3992 | } | |
3993 | ||
02b20f0b LAD |
3994 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3995 | { | |
3996 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3997 | struct hci_conn *conn; | |
3998 | int num = 0; | |
3999 | ||
4000 | BT_DBG("%s", hdev->name); | |
4001 | ||
bf4c6325 GP |
4002 | rcu_read_lock(); |
4003 | ||
4004 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4005 | struct hci_chan *chan; |
4006 | ||
4007 | if (conn->type != type) | |
4008 | continue; | |
4009 | ||
4010 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4011 | continue; | |
4012 | ||
4013 | num++; | |
4014 | ||
8192edef | 4015 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4016 | struct sk_buff *skb; |
4017 | ||
4018 | if (chan->sent) { | |
4019 | chan->sent = 0; | |
4020 | continue; | |
4021 | } | |
4022 | ||
4023 | if (skb_queue_empty(&chan->data_q)) | |
4024 | continue; | |
4025 | ||
4026 | skb = skb_peek(&chan->data_q); | |
4027 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4028 | continue; | |
4029 | ||
4030 | skb->priority = HCI_PRIO_MAX - 1; | |
4031 | ||
4032 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4033 | skb->priority); |
02b20f0b LAD |
4034 | } |
4035 | ||
4036 | if (hci_conn_num(hdev, type) == num) | |
4037 | break; | |
4038 | } | |
bf4c6325 GP |
4039 | |
4040 | rcu_read_unlock(); | |
4041 | ||
02b20f0b LAD |
4042 | } |
4043 | ||
b71d385a AE |
4044 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4045 | { | |
4046 | /* Calculate count of blocks used by this packet */ | |
4047 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4048 | } | |
4049 | ||
6039aa73 | 4050 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4051 | { |
d7a5a11d | 4052 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
4053 | /* ACL tx timeout must be longer than maximum |
4054 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4055 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4056 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4057 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4058 | } |
63d2bc1b | 4059 | } |
1da177e4 | 4060 | |
6039aa73 | 4061 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4062 | { |
4063 | unsigned int cnt = hdev->acl_cnt; | |
4064 | struct hci_chan *chan; | |
4065 | struct sk_buff *skb; | |
4066 | int quote; | |
4067 | ||
4068 | __check_timeout(hdev, cnt); | |
04837f64 | 4069 | |
73d80deb | 4070 | while (hdev->acl_cnt && |
a8c5fb1a | 4071 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4072 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4073 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4074 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4075 | skb->len, skb->priority); |
73d80deb | 4076 | |
ec1cce24 LAD |
4077 | /* Stop if priority has changed */ |
4078 | if (skb->priority < priority) | |
4079 | break; | |
4080 | ||
4081 | skb = skb_dequeue(&chan->data_q); | |
4082 | ||
73d80deb | 4083 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4084 | bt_cb(skb)->force_active); |
04837f64 | 4085 | |
57d17d70 | 4086 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4087 | hdev->acl_last_tx = jiffies; |
4088 | ||
4089 | hdev->acl_cnt--; | |
73d80deb LAD |
4090 | chan->sent++; |
4091 | chan->conn->sent++; | |
1da177e4 LT |
4092 | } |
4093 | } | |
02b20f0b LAD |
4094 | |
4095 | if (cnt != hdev->acl_cnt) | |
4096 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4097 | } |
4098 | ||
6039aa73 | 4099 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4100 | { |
63d2bc1b | 4101 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4102 | struct hci_chan *chan; |
4103 | struct sk_buff *skb; | |
4104 | int quote; | |
bd1eb66b | 4105 | u8 type; |
b71d385a | 4106 | |
63d2bc1b | 4107 | __check_timeout(hdev, cnt); |
b71d385a | 4108 | |
bd1eb66b AE |
4109 | BT_DBG("%s", hdev->name); |
4110 | ||
4111 | if (hdev->dev_type == HCI_AMP) | |
4112 | type = AMP_LINK; | |
4113 | else | |
4114 | type = ACL_LINK; | |
4115 | ||
b71d385a | 4116 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4117 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4118 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4119 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4120 | int blocks; | |
4121 | ||
4122 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4123 | skb->len, skb->priority); |
b71d385a AE |
4124 | |
4125 | /* Stop if priority has changed */ | |
4126 | if (skb->priority < priority) | |
4127 | break; | |
4128 | ||
4129 | skb = skb_dequeue(&chan->data_q); | |
4130 | ||
4131 | blocks = __get_blocks(hdev, skb); | |
4132 | if (blocks > hdev->block_cnt) | |
4133 | return; | |
4134 | ||
4135 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4136 | bt_cb(skb)->force_active); |
b71d385a | 4137 | |
57d17d70 | 4138 | hci_send_frame(hdev, skb); |
b71d385a AE |
4139 | hdev->acl_last_tx = jiffies; |
4140 | ||
4141 | hdev->block_cnt -= blocks; | |
4142 | quote -= blocks; | |
4143 | ||
4144 | chan->sent += blocks; | |
4145 | chan->conn->sent += blocks; | |
4146 | } | |
4147 | } | |
4148 | ||
4149 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4150 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4151 | } |
4152 | ||
6039aa73 | 4153 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4154 | { |
4155 | BT_DBG("%s", hdev->name); | |
4156 | ||
bd1eb66b | 4157 | /* No ACL link over BR/EDR controller */ |
ca8bee5d | 4158 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY) |
bd1eb66b AE |
4159 | return; |
4160 | ||
4161 | /* No AMP link over AMP controller */ | |
4162 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4163 | return; |
4164 | ||
4165 | switch (hdev->flow_ctl_mode) { | |
4166 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4167 | hci_sched_acl_pkt(hdev); | |
4168 | break; | |
4169 | ||
4170 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4171 | hci_sched_acl_blk(hdev); | |
4172 | break; | |
4173 | } | |
4174 | } | |
4175 | ||
1da177e4 | 4176 | /* Schedule SCO */ |
6039aa73 | 4177 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4178 | { |
4179 | struct hci_conn *conn; | |
4180 | struct sk_buff *skb; | |
4181 | int quote; | |
4182 | ||
4183 | BT_DBG("%s", hdev->name); | |
4184 | ||
52087a79 LAD |
4185 | if (!hci_conn_num(hdev, SCO_LINK)) |
4186 | return; | |
4187 | ||
1da177e4 LT |
4188 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4189 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4190 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4191 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4192 | |
4193 | conn->sent++; | |
4194 | if (conn->sent == ~0) | |
4195 | conn->sent = 0; | |
4196 | } | |
4197 | } | |
4198 | } | |
4199 | ||
6039aa73 | 4200 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4201 | { |
4202 | struct hci_conn *conn; | |
4203 | struct sk_buff *skb; | |
4204 | int quote; | |
4205 | ||
4206 | BT_DBG("%s", hdev->name); | |
4207 | ||
52087a79 LAD |
4208 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4209 | return; | |
4210 | ||
8fc9ced3 GP |
4211 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4212 | "e))) { | |
b6a0dc82 MH |
4213 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4214 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4215 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4216 | |
4217 | conn->sent++; | |
4218 | if (conn->sent == ~0) | |
4219 | conn->sent = 0; | |
4220 | } | |
4221 | } | |
4222 | } | |
4223 | ||
6039aa73 | 4224 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4225 | { |
73d80deb | 4226 | struct hci_chan *chan; |
6ed58ec5 | 4227 | struct sk_buff *skb; |
02b20f0b | 4228 | int quote, cnt, tmp; |
6ed58ec5 VT |
4229 | |
4230 | BT_DBG("%s", hdev->name); | |
4231 | ||
52087a79 LAD |
4232 | if (!hci_conn_num(hdev, LE_LINK)) |
4233 | return; | |
4234 | ||
d7a5a11d | 4235 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
4236 | /* LE tx timeout must be longer than maximum |
4237 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4238 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4239 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4240 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4241 | } |
4242 | ||
4243 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4244 | tmp = cnt; |
73d80deb | 4245 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4246 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4247 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4248 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4249 | skb->len, skb->priority); |
6ed58ec5 | 4250 | |
ec1cce24 LAD |
4251 | /* Stop if priority has changed */ |
4252 | if (skb->priority < priority) | |
4253 | break; | |
4254 | ||
4255 | skb = skb_dequeue(&chan->data_q); | |
4256 | ||
57d17d70 | 4257 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4258 | hdev->le_last_tx = jiffies; |
4259 | ||
4260 | cnt--; | |
73d80deb LAD |
4261 | chan->sent++; |
4262 | chan->conn->sent++; | |
6ed58ec5 VT |
4263 | } |
4264 | } | |
73d80deb | 4265 | |
6ed58ec5 VT |
4266 | if (hdev->le_pkts) |
4267 | hdev->le_cnt = cnt; | |
4268 | else | |
4269 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4270 | |
4271 | if (cnt != tmp) | |
4272 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4273 | } |
4274 | ||
3eff45ea | 4275 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4276 | { |
3eff45ea | 4277 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4278 | struct sk_buff *skb; |
4279 | ||
6ed58ec5 | 4280 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4281 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4282 | |
d7a5a11d | 4283 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
4284 | /* Schedule queues and send stuff to HCI driver */ |
4285 | hci_sched_acl(hdev); | |
4286 | hci_sched_sco(hdev); | |
4287 | hci_sched_esco(hdev); | |
4288 | hci_sched_le(hdev); | |
4289 | } | |
6ed58ec5 | 4290 | |
1da177e4 LT |
4291 | /* Send next queued raw (unknown type) packet */ |
4292 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4293 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4294 | } |
4295 | ||
25985edc | 4296 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4297 | |
4298 | /* ACL data packet */ | |
6039aa73 | 4299 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4300 | { |
4301 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4302 | struct hci_conn *conn; | |
4303 | __u16 handle, flags; | |
4304 | ||
4305 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4306 | ||
4307 | handle = __le16_to_cpu(hdr->handle); | |
4308 | flags = hci_flags(handle); | |
4309 | handle = hci_handle(handle); | |
4310 | ||
f0e09510 | 4311 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4312 | handle, flags); |
1da177e4 LT |
4313 | |
4314 | hdev->stat.acl_rx++; | |
4315 | ||
4316 | hci_dev_lock(hdev); | |
4317 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4318 | hci_dev_unlock(hdev); | |
8e87d142 | 4319 | |
1da177e4 | 4320 | if (conn) { |
65983fc7 | 4321 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4322 | |
1da177e4 | 4323 | /* Send to upper protocol */ |
686ebf28 UF |
4324 | l2cap_recv_acldata(conn, skb, flags); |
4325 | return; | |
1da177e4 | 4326 | } else { |
2064ee33 MH |
4327 | bt_dev_err(hdev, "ACL packet for unknown connection handle %d", |
4328 | handle); | |
1da177e4 LT |
4329 | } |
4330 | ||
4331 | kfree_skb(skb); | |
4332 | } | |
4333 | ||
4334 | /* SCO data packet */ | |
6039aa73 | 4335 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4336 | { |
4337 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4338 | struct hci_conn *conn; | |
4339 | __u16 handle; | |
4340 | ||
4341 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4342 | ||
4343 | handle = __le16_to_cpu(hdr->handle); | |
4344 | ||
f0e09510 | 4345 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4346 | |
4347 | hdev->stat.sco_rx++; | |
4348 | ||
4349 | hci_dev_lock(hdev); | |
4350 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4351 | hci_dev_unlock(hdev); | |
4352 | ||
4353 | if (conn) { | |
1da177e4 | 4354 | /* Send to upper protocol */ |
686ebf28 UF |
4355 | sco_recv_scodata(conn, skb); |
4356 | return; | |
1da177e4 | 4357 | } else { |
2064ee33 MH |
4358 | bt_dev_err(hdev, "SCO packet for unknown connection handle %d", |
4359 | handle); | |
1da177e4 LT |
4360 | } |
4361 | ||
4362 | kfree_skb(skb); | |
4363 | } | |
4364 | ||
9238f36a JH |
4365 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4366 | { | |
4367 | struct sk_buff *skb; | |
4368 | ||
4369 | skb = skb_peek(&hdev->cmd_q); | |
4370 | if (!skb) | |
4371 | return true; | |
4372 | ||
44d27137 | 4373 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4374 | } |
4375 | ||
42c6b129 JH |
4376 | static void hci_resend_last(struct hci_dev *hdev) |
4377 | { | |
4378 | struct hci_command_hdr *sent; | |
4379 | struct sk_buff *skb; | |
4380 | u16 opcode; | |
4381 | ||
4382 | if (!hdev->sent_cmd) | |
4383 | return; | |
4384 | ||
4385 | sent = (void *) hdev->sent_cmd->data; | |
4386 | opcode = __le16_to_cpu(sent->opcode); | |
4387 | if (opcode == HCI_OP_RESET) | |
4388 | return; | |
4389 | ||
4390 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4391 | if (!skb) | |
4392 | return; | |
4393 | ||
4394 | skb_queue_head(&hdev->cmd_q, skb); | |
4395 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4396 | } | |
4397 | ||
e6214487 JH |
4398 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4399 | hci_req_complete_t *req_complete, | |
4400 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4401 | { |
9238f36a JH |
4402 | struct sk_buff *skb; |
4403 | unsigned long flags; | |
4404 | ||
4405 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4406 | ||
42c6b129 JH |
4407 | /* If the completed command doesn't match the last one that was |
4408 | * sent we need to do special handling of it. | |
9238f36a | 4409 | */ |
42c6b129 JH |
4410 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4411 | /* Some CSR based controllers generate a spontaneous | |
4412 | * reset complete event during init and any pending | |
4413 | * command will never be completed. In such a case we | |
4414 | * need to resend whatever was the last sent | |
4415 | * command. | |
4416 | */ | |
4417 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4418 | hci_resend_last(hdev); | |
4419 | ||
9238f36a | 4420 | return; |
42c6b129 | 4421 | } |
9238f36a | 4422 | |
f80c5dad JPRV |
4423 | /* If we reach this point this event matches the last command sent */ |
4424 | hci_dev_clear_flag(hdev, HCI_CMD_PENDING); | |
4425 | ||
9238f36a JH |
4426 | /* If the command succeeded and there's still more commands in |
4427 | * this request the request is not yet complete. | |
4428 | */ | |
4429 | if (!status && !hci_req_is_complete(hdev)) | |
4430 | return; | |
4431 | ||
4432 | /* If this was the last command in a request the complete | |
4433 | * callback would be found in hdev->sent_cmd instead of the | |
4434 | * command queue (hdev->cmd_q). | |
4435 | */ | |
44d27137 JH |
4436 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
4437 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
4438 | return; |
4439 | } | |
53e21fbc | 4440 | |
44d27137 JH |
4441 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4442 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 4443 | return; |
9238f36a JH |
4444 | } |
4445 | ||
4446 | /* Remove all pending commands belonging to this request */ | |
4447 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4448 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4449 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4450 | __skb_queue_head(&hdev->cmd_q, skb); |
4451 | break; | |
4452 | } | |
4453 | ||
3bd7594e DA |
4454 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
4455 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
4456 | else | |
4457 | *req_complete = bt_cb(skb)->hci.req_complete; | |
9238f36a JH |
4458 | kfree_skb(skb); |
4459 | } | |
4460 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4461 | } |
4462 | ||
b78752cc | 4463 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4464 | { |
b78752cc | 4465 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4466 | struct sk_buff *skb; |
4467 | ||
4468 | BT_DBG("%s", hdev->name); | |
4469 | ||
1da177e4 | 4470 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4471 | /* Send copy to monitor */ |
4472 | hci_send_to_monitor(hdev, skb); | |
4473 | ||
1da177e4 LT |
4474 | if (atomic_read(&hdev->promisc)) { |
4475 | /* Send copy to the sockets */ | |
470fe1b5 | 4476 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4477 | } |
4478 | ||
4812834c MK |
4479 | /* If the device has been opened in HCI_USER_CHANNEL, |
4480 | * the userspace has exclusive access to device. | |
4481 | * When device is HCI_INIT, we still need to process | |
4482 | * the data packets to the driver in order | |
4483 | * to complete its setup(). | |
4484 | */ | |
4485 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4486 | !test_bit(HCI_INIT, &hdev->flags)) { | |
1da177e4 LT |
4487 | kfree_skb(skb); |
4488 | continue; | |
4489 | } | |
4490 | ||
4491 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4492 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4493 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4494 | case HCI_ACLDATA_PKT: |
4495 | case HCI_SCODATA_PKT: | |
4496 | kfree_skb(skb); | |
4497 | continue; | |
3ff50b79 | 4498 | } |
1da177e4 LT |
4499 | } |
4500 | ||
4501 | /* Process frame */ | |
d79f34e3 | 4502 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4503 | case HCI_EVENT_PKT: |
b78752cc | 4504 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4505 | hci_event_packet(hdev, skb); |
4506 | break; | |
4507 | ||
4508 | case HCI_ACLDATA_PKT: | |
4509 | BT_DBG("%s ACL data packet", hdev->name); | |
4510 | hci_acldata_packet(hdev, skb); | |
4511 | break; | |
4512 | ||
4513 | case HCI_SCODATA_PKT: | |
4514 | BT_DBG("%s SCO data packet", hdev->name); | |
4515 | hci_scodata_packet(hdev, skb); | |
4516 | break; | |
4517 | ||
4518 | default: | |
4519 | kfree_skb(skb); | |
4520 | break; | |
4521 | } | |
4522 | } | |
1da177e4 LT |
4523 | } |
4524 | ||
c347b765 | 4525 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4526 | { |
c347b765 | 4527 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4528 | struct sk_buff *skb; |
4529 | ||
2104786b AE |
4530 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4531 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4532 | |
1da177e4 | 4533 | /* Send queued commands */ |
5a08ecce AE |
4534 | if (atomic_read(&hdev->cmd_cnt)) { |
4535 | skb = skb_dequeue(&hdev->cmd_q); | |
4536 | if (!skb) | |
4537 | return; | |
4538 | ||
7585b97a | 4539 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4540 | |
a675d7f1 | 4541 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4542 | if (hdev->sent_cmd) { |
f80c5dad JPRV |
4543 | if (hci_req_status_pend(hdev)) |
4544 | hci_dev_set_flag(hdev, HCI_CMD_PENDING); | |
1da177e4 | 4545 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4546 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4547 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4548 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4549 | else |
65cc2b49 MH |
4550 | schedule_delayed_work(&hdev->cmd_timer, |
4551 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4552 | } else { |
4553 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4554 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4555 | } |
4556 | } | |
4557 | } |