Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 JH |
42 | #include "smp.h" |
43 | ||
b78752cc | 44 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 45 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 46 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 47 | |
1da177e4 LT |
48 | /* HCI device list */ |
49 | LIST_HEAD(hci_dev_list); | |
50 | DEFINE_RWLOCK(hci_dev_list_lock); | |
51 | ||
52 | /* HCI callback list */ | |
53 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 54 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 55 | |
3df92b31 SL |
56 | /* HCI ID Numbering */ |
57 | static DEFINE_IDA(hci_index_ida); | |
58 | ||
baf27f6e MH |
59 | /* ---- HCI debugfs entries ---- */ |
60 | ||
4b4148e9 MH |
61 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
62 | size_t count, loff_t *ppos) | |
63 | { | |
64 | struct hci_dev *hdev = file->private_data; | |
65 | char buf[3]; | |
66 | ||
74b93e9f | 67 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; |
4b4148e9 MH |
68 | buf[1] = '\n'; |
69 | buf[2] = '\0'; | |
70 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
71 | } | |
72 | ||
73 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
74 | size_t count, loff_t *ppos) | |
75 | { | |
76 | struct hci_dev *hdev = file->private_data; | |
77 | struct sk_buff *skb; | |
78 | char buf[32]; | |
79 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
80 | bool enable; | |
4b4148e9 MH |
81 | |
82 | if (!test_bit(HCI_UP, &hdev->flags)) | |
83 | return -ENETDOWN; | |
84 | ||
85 | if (copy_from_user(buf, user_buf, buf_size)) | |
86 | return -EFAULT; | |
87 | ||
88 | buf[buf_size] = '\0'; | |
89 | if (strtobool(buf, &enable)) | |
90 | return -EINVAL; | |
91 | ||
b7cb93e5 | 92 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
93 | return -EALREADY; |
94 | ||
b504430c | 95 | hci_req_sync_lock(hdev); |
4b4148e9 MH |
96 | if (enable) |
97 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
98 | HCI_CMD_TIMEOUT); | |
99 | else | |
100 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
101 | HCI_CMD_TIMEOUT); | |
b504430c | 102 | hci_req_sync_unlock(hdev); |
4b4148e9 MH |
103 | |
104 | if (IS_ERR(skb)) | |
105 | return PTR_ERR(skb); | |
106 | ||
4b4148e9 MH |
107 | kfree_skb(skb); |
108 | ||
b7cb93e5 | 109 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
110 | |
111 | return count; | |
112 | } | |
113 | ||
114 | static const struct file_operations dut_mode_fops = { | |
115 | .open = simple_open, | |
116 | .read = dut_mode_read, | |
117 | .write = dut_mode_write, | |
118 | .llseek = default_llseek, | |
119 | }; | |
120 | ||
4b4113d6 MH |
121 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
122 | size_t count, loff_t *ppos) | |
123 | { | |
124 | struct hci_dev *hdev = file->private_data; | |
125 | char buf[3]; | |
126 | ||
74b93e9f | 127 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; |
4b4113d6 MH |
128 | buf[1] = '\n'; |
129 | buf[2] = '\0'; | |
130 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
131 | } | |
132 | ||
133 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
134 | size_t count, loff_t *ppos) | |
135 | { | |
136 | struct hci_dev *hdev = file->private_data; | |
137 | char buf[32]; | |
138 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
139 | bool enable; | |
140 | int err; | |
141 | ||
142 | if (copy_from_user(buf, user_buf, buf_size)) | |
143 | return -EFAULT; | |
144 | ||
145 | buf[buf_size] = '\0'; | |
146 | if (strtobool(buf, &enable)) | |
147 | return -EINVAL; | |
148 | ||
7e995b9e MH |
149 | /* When the diagnostic flags are not persistent and the transport |
150 | * is not active, then there is no need for the vendor callback. | |
151 | * | |
152 | * Instead just store the desired value. If needed the setting | |
153 | * will be programmed when the controller gets powered on. | |
154 | */ | |
155 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
156 | !test_bit(HCI_RUNNING, &hdev->flags)) | |
157 | goto done; | |
158 | ||
b504430c | 159 | hci_req_sync_lock(hdev); |
4b4113d6 | 160 | err = hdev->set_diag(hdev, enable); |
b504430c | 161 | hci_req_sync_unlock(hdev); |
4b4113d6 MH |
162 | |
163 | if (err < 0) | |
164 | return err; | |
165 | ||
7e995b9e | 166 | done: |
4b4113d6 MH |
167 | if (enable) |
168 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
169 | else | |
170 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
171 | ||
172 | return count; | |
173 | } | |
174 | ||
175 | static const struct file_operations vendor_diag_fops = { | |
176 | .open = simple_open, | |
177 | .read = vendor_diag_read, | |
178 | .write = vendor_diag_write, | |
179 | .llseek = default_llseek, | |
180 | }; | |
181 | ||
f640ee98 MH |
182 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
183 | { | |
184 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
185 | &dut_mode_fops); | |
186 | ||
187 | if (hdev->set_diag) | |
188 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
189 | &vendor_diag_fops); | |
190 | } | |
191 | ||
a1d01db1 | 192 | static int hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 193 | { |
42c6b129 | 194 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
195 | |
196 | /* Reset device */ | |
42c6b129 JH |
197 | set_bit(HCI_RESET, &req->hdev->flags); |
198 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
a1d01db1 | 199 | return 0; |
1da177e4 LT |
200 | } |
201 | ||
42c6b129 | 202 | static void bredr_init(struct hci_request *req) |
1da177e4 | 203 | { |
42c6b129 | 204 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 205 | |
1da177e4 | 206 | /* Read Local Supported Features */ |
42c6b129 | 207 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 208 | |
1143e5a6 | 209 | /* Read Local Version */ |
42c6b129 | 210 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
211 | |
212 | /* Read BD Address */ | |
42c6b129 | 213 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
214 | } |
215 | ||
0af801b9 | 216 | static void amp_init1(struct hci_request *req) |
e61ef499 | 217 | { |
42c6b129 | 218 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 219 | |
e61ef499 | 220 | /* Read Local Version */ |
42c6b129 | 221 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 222 | |
f6996cfe MH |
223 | /* Read Local Supported Commands */ |
224 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
225 | ||
6bcbc489 | 226 | /* Read Local AMP Info */ |
42c6b129 | 227 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
228 | |
229 | /* Read Data Blk size */ | |
42c6b129 | 230 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 231 | |
f38ba941 MH |
232 | /* Read Flow Control Mode */ |
233 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
234 | ||
7528ca1c MH |
235 | /* Read Location Data */ |
236 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
237 | } |
238 | ||
a1d01db1 | 239 | static int amp_init2(struct hci_request *req) |
0af801b9 JH |
240 | { |
241 | /* Read Local Supported Features. Not all AMP controllers | |
242 | * support this so it's placed conditionally in the second | |
243 | * stage init. | |
244 | */ | |
245 | if (req->hdev->commands[14] & 0x20) | |
246 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
a1d01db1 JH |
247 | |
248 | return 0; | |
0af801b9 JH |
249 | } |
250 | ||
a1d01db1 | 251 | static int hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 252 | { |
42c6b129 | 253 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
254 | |
255 | BT_DBG("%s %ld", hdev->name, opt); | |
256 | ||
11778716 AE |
257 | /* Reset */ |
258 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 259 | hci_reset_req(req, 0); |
11778716 | 260 | |
e61ef499 AE |
261 | switch (hdev->dev_type) { |
262 | case HCI_BREDR: | |
42c6b129 | 263 | bredr_init(req); |
e61ef499 AE |
264 | break; |
265 | ||
266 | case HCI_AMP: | |
0af801b9 | 267 | amp_init1(req); |
e61ef499 AE |
268 | break; |
269 | ||
270 | default: | |
271 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
272 | break; | |
273 | } | |
a1d01db1 JH |
274 | |
275 | return 0; | |
e61ef499 AE |
276 | } |
277 | ||
42c6b129 | 278 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 279 | { |
2177bab5 JH |
280 | __le16 param; |
281 | __u8 flt_type; | |
282 | ||
283 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 284 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
285 | |
286 | /* Read Class of Device */ | |
42c6b129 | 287 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
288 | |
289 | /* Read Local Name */ | |
42c6b129 | 290 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
291 | |
292 | /* Read Voice Setting */ | |
42c6b129 | 293 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 294 | |
b4cb9fb2 MH |
295 | /* Read Number of Supported IAC */ |
296 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
297 | ||
4b836f39 MH |
298 | /* Read Current IAC LAP */ |
299 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
300 | ||
2177bab5 JH |
301 | /* Clear Event Filters */ |
302 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 303 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
304 | |
305 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 306 | param = cpu_to_le16(0x7d00); |
42c6b129 | 307 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
308 | } |
309 | ||
42c6b129 | 310 | static void le_setup(struct hci_request *req) |
2177bab5 | 311 | { |
c73eee91 JH |
312 | struct hci_dev *hdev = req->hdev; |
313 | ||
2177bab5 | 314 | /* Read LE Buffer Size */ |
42c6b129 | 315 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
316 | |
317 | /* Read LE Local Supported Features */ | |
42c6b129 | 318 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 319 | |
747d3f03 MH |
320 | /* Read LE Supported States */ |
321 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
322 | ||
c73eee91 JH |
323 | /* LE-only controllers have LE implicitly enabled */ |
324 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 325 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
326 | } |
327 | ||
42c6b129 | 328 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 329 | { |
42c6b129 JH |
330 | struct hci_dev *hdev = req->hdev; |
331 | ||
2177bab5 JH |
332 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
333 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
334 | * command otherwise. | |
335 | */ | |
336 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
337 | ||
338 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
339 | * any event mask for pre 1.2 devices. | |
340 | */ | |
341 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
342 | return; | |
343 | ||
344 | if (lmp_bredr_capable(hdev)) { | |
345 | events[4] |= 0x01; /* Flow Specification Complete */ | |
c7882cbd MH |
346 | } else { |
347 | /* Use a different default for LE-only devices */ | |
348 | memset(events, 0, sizeof(events)); | |
c7882cbd MH |
349 | events[1] |= 0x20; /* Command Complete */ |
350 | events[1] |= 0x40; /* Command Status */ | |
351 | events[1] |= 0x80; /* Hardware Error */ | |
5c3d3b4c MH |
352 | |
353 | /* If the controller supports the Disconnect command, enable | |
354 | * the corresponding event. In addition enable packet flow | |
355 | * control related events. | |
356 | */ | |
357 | if (hdev->commands[0] & 0x20) { | |
358 | events[0] |= 0x10; /* Disconnection Complete */ | |
359 | events[2] |= 0x04; /* Number of Completed Packets */ | |
360 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
361 | } | |
362 | ||
363 | /* If the controller supports the Read Remote Version | |
364 | * Information command, enable the corresponding event. | |
365 | */ | |
366 | if (hdev->commands[2] & 0x80) | |
367 | events[1] |= 0x08; /* Read Remote Version Information | |
368 | * Complete | |
369 | */ | |
0da71f1b MH |
370 | |
371 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
372 | events[0] |= 0x80; /* Encryption Change */ | |
373 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
374 | } | |
2177bab5 JH |
375 | } |
376 | ||
9fe759ce MH |
377 | if (lmp_inq_rssi_capable(hdev) || |
378 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2177bab5 JH |
379 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
380 | ||
70f56aa2 MH |
381 | if (lmp_ext_feat_capable(hdev)) |
382 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
383 | ||
384 | if (lmp_esco_capable(hdev)) { | |
385 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
386 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
387 | } | |
388 | ||
2177bab5 JH |
389 | if (lmp_sniffsubr_capable(hdev)) |
390 | events[5] |= 0x20; /* Sniff Subrating */ | |
391 | ||
392 | if (lmp_pause_enc_capable(hdev)) | |
393 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
394 | ||
395 | if (lmp_ext_inq_capable(hdev)) | |
396 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
397 | ||
398 | if (lmp_no_flush_capable(hdev)) | |
399 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
400 | ||
401 | if (lmp_lsto_capable(hdev)) | |
402 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
403 | ||
404 | if (lmp_ssp_capable(hdev)) { | |
405 | events[6] |= 0x01; /* IO Capability Request */ | |
406 | events[6] |= 0x02; /* IO Capability Response */ | |
407 | events[6] |= 0x04; /* User Confirmation Request */ | |
408 | events[6] |= 0x08; /* User Passkey Request */ | |
409 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
410 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
411 | events[7] |= 0x04; /* User Passkey Notification */ | |
412 | events[7] |= 0x08; /* Keypress Notification */ | |
413 | events[7] |= 0x10; /* Remote Host Supported | |
414 | * Features Notification | |
415 | */ | |
416 | } | |
417 | ||
418 | if (lmp_le_capable(hdev)) | |
419 | events[7] |= 0x20; /* LE Meta-Event */ | |
420 | ||
42c6b129 | 421 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
422 | } |
423 | ||
a1d01db1 | 424 | static int hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 425 | { |
42c6b129 JH |
426 | struct hci_dev *hdev = req->hdev; |
427 | ||
0af801b9 JH |
428 | if (hdev->dev_type == HCI_AMP) |
429 | return amp_init2(req); | |
430 | ||
2177bab5 | 431 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 432 | bredr_setup(req); |
56f87901 | 433 | else |
a358dc11 | 434 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
435 | |
436 | if (lmp_le_capable(hdev)) | |
42c6b129 | 437 | le_setup(req); |
2177bab5 | 438 | |
0f3adeae MH |
439 | /* All Bluetooth 1.2 and later controllers should support the |
440 | * HCI command for reading the local supported commands. | |
441 | * | |
442 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
443 | * but do not have support for this command. If that is the case, | |
444 | * the driver can quirk the behavior and skip reading the local | |
445 | * supported commands. | |
3f8e2d75 | 446 | */ |
0f3adeae MH |
447 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
448 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 449 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
450 | |
451 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
452 | /* When SSP is available, then the host features page |
453 | * should also be available as well. However some | |
454 | * controllers list the max_page as 0 as long as SSP | |
455 | * has not been enabled. To achieve proper debugging | |
456 | * output, force the minimum max_page to 1 at least. | |
457 | */ | |
458 | hdev->max_page = 0x01; | |
459 | ||
d7a5a11d | 460 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 461 | u8 mode = 0x01; |
574ea3c7 | 462 | |
42c6b129 JH |
463 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
464 | sizeof(mode), &mode); | |
2177bab5 JH |
465 | } else { |
466 | struct hci_cp_write_eir cp; | |
467 | ||
468 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
469 | memset(&cp, 0, sizeof(cp)); | |
470 | ||
42c6b129 | 471 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
472 | } |
473 | } | |
474 | ||
043ec9bf MH |
475 | if (lmp_inq_rssi_capable(hdev) || |
476 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
477 | u8 mode; |
478 | ||
479 | /* If Extended Inquiry Result events are supported, then | |
480 | * they are clearly preferred over Inquiry Result with RSSI | |
481 | * events. | |
482 | */ | |
483 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
484 | ||
485 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
486 | } | |
2177bab5 JH |
487 | |
488 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 489 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
490 | |
491 | if (lmp_ext_feat_capable(hdev)) { | |
492 | struct hci_cp_read_local_ext_features cp; | |
493 | ||
494 | cp.page = 0x01; | |
42c6b129 JH |
495 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
496 | sizeof(cp), &cp); | |
2177bab5 JH |
497 | } |
498 | ||
d7a5a11d | 499 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 500 | u8 enable = 1; |
42c6b129 JH |
501 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
502 | &enable); | |
2177bab5 | 503 | } |
a1d01db1 JH |
504 | |
505 | return 0; | |
2177bab5 JH |
506 | } |
507 | ||
42c6b129 | 508 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 509 | { |
42c6b129 | 510 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
511 | struct hci_cp_write_def_link_policy cp; |
512 | u16 link_policy = 0; | |
513 | ||
514 | if (lmp_rswitch_capable(hdev)) | |
515 | link_policy |= HCI_LP_RSWITCH; | |
516 | if (lmp_hold_capable(hdev)) | |
517 | link_policy |= HCI_LP_HOLD; | |
518 | if (lmp_sniff_capable(hdev)) | |
519 | link_policy |= HCI_LP_SNIFF; | |
520 | if (lmp_park_capable(hdev)) | |
521 | link_policy |= HCI_LP_PARK; | |
522 | ||
523 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 524 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
525 | } |
526 | ||
42c6b129 | 527 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 528 | { |
42c6b129 | 529 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
530 | struct hci_cp_write_le_host_supported cp; |
531 | ||
c73eee91 JH |
532 | /* LE-only devices do not support explicit enablement */ |
533 | if (!lmp_bredr_capable(hdev)) | |
534 | return; | |
535 | ||
2177bab5 JH |
536 | memset(&cp, 0, sizeof(cp)); |
537 | ||
d7a5a11d | 538 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 539 | cp.le = 0x01; |
32226e4f | 540 | cp.simul = 0x00; |
2177bab5 JH |
541 | } |
542 | ||
543 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
544 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
545 | &cp); | |
2177bab5 JH |
546 | } |
547 | ||
d62e6d67 JH |
548 | static void hci_set_event_mask_page_2(struct hci_request *req) |
549 | { | |
550 | struct hci_dev *hdev = req->hdev; | |
551 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
552 | ||
553 | /* If Connectionless Slave Broadcast master role is supported | |
554 | * enable all necessary events for it. | |
555 | */ | |
53b834d2 | 556 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
557 | events[1] |= 0x40; /* Triggered Clock Capture */ |
558 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
559 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
560 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
561 | } | |
562 | ||
563 | /* If Connectionless Slave Broadcast slave role is supported | |
564 | * enable all necessary events for it. | |
565 | */ | |
53b834d2 | 566 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
567 | events[2] |= 0x01; /* Synchronization Train Received */ |
568 | events[2] |= 0x02; /* CSB Receive */ | |
569 | events[2] |= 0x04; /* CSB Timeout */ | |
570 | events[2] |= 0x08; /* Truncated Page Complete */ | |
571 | } | |
572 | ||
40c59fcb | 573 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 574 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
575 | events[2] |= 0x80; |
576 | ||
d62e6d67 JH |
577 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
578 | } | |
579 | ||
a1d01db1 | 580 | static int hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 581 | { |
42c6b129 | 582 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 583 | u8 p; |
42c6b129 | 584 | |
0da71f1b MH |
585 | hci_setup_event_mask(req); |
586 | ||
e81be90b JH |
587 | if (hdev->commands[6] & 0x20 && |
588 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
589 | struct hci_cp_read_stored_link_key cp; |
590 | ||
591 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
592 | cp.read_all = 0x01; | |
593 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
594 | } | |
595 | ||
2177bab5 | 596 | if (hdev->commands[5] & 0x10) |
42c6b129 | 597 | hci_setup_link_policy(req); |
2177bab5 | 598 | |
417287de MH |
599 | if (hdev->commands[8] & 0x01) |
600 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
601 | ||
602 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
603 | * support the Read Page Scan Type command. Check support for | |
604 | * this command in the bit mask of supported commands. | |
605 | */ | |
606 | if (hdev->commands[13] & 0x01) | |
607 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
608 | ||
9193c6e8 AG |
609 | if (lmp_le_capable(hdev)) { |
610 | u8 events[8]; | |
611 | ||
612 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
613 | |
614 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
615 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
616 | |
617 | /* If controller supports the Connection Parameters Request | |
618 | * Link Layer Procedure, enable the corresponding event. | |
619 | */ | |
620 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
621 | events[0] |= 0x20; /* LE Remote Connection | |
622 | * Parameter Request | |
623 | */ | |
624 | ||
a9f6068e MH |
625 | /* If the controller supports the Data Length Extension |
626 | * feature, enable the corresponding event. | |
627 | */ | |
628 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
629 | events[0] |= 0x40; /* LE Data Length Change */ | |
630 | ||
4b71bba4 MH |
631 | /* If the controller supports Extended Scanner Filter |
632 | * Policies, enable the correspondig event. | |
633 | */ | |
634 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
635 | events[1] |= 0x04; /* LE Direct Advertising | |
636 | * Report | |
637 | */ | |
638 | ||
7d26f5c4 MH |
639 | /* If the controller supports the LE Set Scan Enable command, |
640 | * enable the corresponding advertising report event. | |
641 | */ | |
642 | if (hdev->commands[26] & 0x08) | |
643 | events[0] |= 0x02; /* LE Advertising Report */ | |
644 | ||
645 | /* If the controller supports the LE Create Connection | |
646 | * command, enable the corresponding event. | |
647 | */ | |
648 | if (hdev->commands[26] & 0x10) | |
649 | events[0] |= 0x01; /* LE Connection Complete */ | |
650 | ||
651 | /* If the controller supports the LE Connection Update | |
652 | * command, enable the corresponding event. | |
653 | */ | |
654 | if (hdev->commands[27] & 0x04) | |
655 | events[0] |= 0x04; /* LE Connection Update | |
656 | * Complete | |
657 | */ | |
658 | ||
659 | /* If the controller supports the LE Read Remote Used Features | |
660 | * command, enable the corresponding event. | |
661 | */ | |
662 | if (hdev->commands[27] & 0x20) | |
663 | events[0] |= 0x08; /* LE Read Remote Used | |
664 | * Features Complete | |
665 | */ | |
666 | ||
5a34bd5f MH |
667 | /* If the controller supports the LE Read Local P-256 |
668 | * Public Key command, enable the corresponding event. | |
669 | */ | |
670 | if (hdev->commands[34] & 0x02) | |
671 | events[0] |= 0x80; /* LE Read Local P-256 | |
672 | * Public Key Complete | |
673 | */ | |
674 | ||
675 | /* If the controller supports the LE Generate DHKey | |
676 | * command, enable the corresponding event. | |
677 | */ | |
678 | if (hdev->commands[34] & 0x04) | |
679 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
680 | ||
9193c6e8 AG |
681 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
682 | events); | |
683 | ||
15a49cca MH |
684 | if (hdev->commands[25] & 0x40) { |
685 | /* Read LE Advertising Channel TX Power */ | |
686 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
687 | } | |
688 | ||
2ab216a7 MH |
689 | if (hdev->commands[26] & 0x40) { |
690 | /* Read LE White List Size */ | |
691 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, | |
692 | 0, NULL); | |
693 | } | |
694 | ||
695 | if (hdev->commands[26] & 0x80) { | |
696 | /* Clear LE White List */ | |
697 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
698 | } | |
699 | ||
a9f6068e MH |
700 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
701 | /* Read LE Maximum Data Length */ | |
702 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
703 | ||
704 | /* Read LE Suggested Default Data Length */ | |
705 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
706 | } | |
707 | ||
42c6b129 | 708 | hci_set_le_support(req); |
9193c6e8 | 709 | } |
d2c5d77f JH |
710 | |
711 | /* Read features beyond page 1 if available */ | |
712 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
713 | struct hci_cp_read_local_ext_features cp; | |
714 | ||
715 | cp.page = p; | |
716 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
717 | sizeof(cp), &cp); | |
718 | } | |
a1d01db1 JH |
719 | |
720 | return 0; | |
2177bab5 JH |
721 | } |
722 | ||
a1d01db1 | 723 | static int hci_init4_req(struct hci_request *req, unsigned long opt) |
5d4e7e8d JH |
724 | { |
725 | struct hci_dev *hdev = req->hdev; | |
726 | ||
36f260ce MH |
727 | /* Some Broadcom based Bluetooth controllers do not support the |
728 | * Delete Stored Link Key command. They are clearly indicating its | |
729 | * absence in the bit mask of supported commands. | |
730 | * | |
731 | * Check the supported commands and only if the the command is marked | |
732 | * as supported send it. If not supported assume that the controller | |
733 | * does not have actual support for stored link keys which makes this | |
734 | * command redundant anyway. | |
735 | * | |
736 | * Some controllers indicate that they support handling deleting | |
737 | * stored link keys, but they don't. The quirk lets a driver | |
738 | * just disable this command. | |
739 | */ | |
740 | if (hdev->commands[6] & 0x80 && | |
741 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
742 | struct hci_cp_delete_stored_link_key cp; | |
743 | ||
744 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
745 | cp.delete_all = 0x01; | |
746 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
747 | sizeof(cp), &cp); | |
748 | } | |
749 | ||
d62e6d67 JH |
750 | /* Set event mask page 2 if the HCI command for it is supported */ |
751 | if (hdev->commands[22] & 0x04) | |
752 | hci_set_event_mask_page_2(req); | |
753 | ||
109e3191 MH |
754 | /* Read local codec list if the HCI command is supported */ |
755 | if (hdev->commands[29] & 0x20) | |
756 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
757 | ||
f4fe73ed MH |
758 | /* Get MWS transport configuration if the HCI command is supported */ |
759 | if (hdev->commands[30] & 0x08) | |
760 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
761 | ||
5d4e7e8d | 762 | /* Check for Synchronization Train support */ |
53b834d2 | 763 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 764 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
765 | |
766 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 767 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 768 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 769 | u8 support = 0x01; |
574ea3c7 | 770 | |
a6d0d690 MH |
771 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
772 | sizeof(support), &support); | |
773 | } | |
a1d01db1 JH |
774 | |
775 | return 0; | |
5d4e7e8d JH |
776 | } |
777 | ||
2177bab5 JH |
778 | static int __hci_init(struct hci_dev *hdev) |
779 | { | |
780 | int err; | |
781 | ||
4ebeee2d | 782 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL); |
2177bab5 JH |
783 | if (err < 0) |
784 | return err; | |
785 | ||
f640ee98 MH |
786 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
787 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 788 | |
4ebeee2d | 789 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL); |
0af801b9 JH |
790 | if (err < 0) |
791 | return err; | |
792 | ||
2177bab5 JH |
793 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
794 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 795 | * first two stages of init. |
2177bab5 JH |
796 | */ |
797 | if (hdev->dev_type != HCI_BREDR) | |
798 | return 0; | |
799 | ||
4ebeee2d | 800 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL); |
5d4e7e8d JH |
801 | if (err < 0) |
802 | return err; | |
803 | ||
4ebeee2d | 804 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL); |
baf27f6e MH |
805 | if (err < 0) |
806 | return err; | |
807 | ||
ec6cef9c MH |
808 | /* This function is only called when the controller is actually in |
809 | * configured state. When the controller is marked as unconfigured, | |
810 | * this initialization procedure is not run. | |
811 | * | |
812 | * It means that it is possible that a controller runs through its | |
813 | * setup phase and then discovers missing settings. If that is the | |
814 | * case, then this function will not be called. It then will only | |
815 | * be called during the config phase. | |
816 | * | |
817 | * So only when in setup phase or config phase, create the debugfs | |
818 | * entries and register the SMP channels. | |
baf27f6e | 819 | */ |
d7a5a11d MH |
820 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
821 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
822 | return 0; |
823 | ||
60c5f5fb MH |
824 | hci_debugfs_create_common(hdev); |
825 | ||
71c3b60e | 826 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 827 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 828 | |
162a3bac | 829 | if (lmp_le_capable(hdev)) |
60c5f5fb | 830 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 831 | |
baf27f6e | 832 | return 0; |
2177bab5 JH |
833 | } |
834 | ||
a1d01db1 | 835 | static int hci_init0_req(struct hci_request *req, unsigned long opt) |
0ebca7d6 MH |
836 | { |
837 | struct hci_dev *hdev = req->hdev; | |
838 | ||
839 | BT_DBG("%s %ld", hdev->name, opt); | |
840 | ||
841 | /* Reset */ | |
842 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
843 | hci_reset_req(req, 0); | |
844 | ||
845 | /* Read Local Version */ | |
846 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
847 | ||
848 | /* Read BD Address */ | |
849 | if (hdev->set_bdaddr) | |
850 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
a1d01db1 JH |
851 | |
852 | return 0; | |
0ebca7d6 MH |
853 | } |
854 | ||
855 | static int __hci_unconf_init(struct hci_dev *hdev) | |
856 | { | |
857 | int err; | |
858 | ||
cc78b44b MH |
859 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
860 | return 0; | |
861 | ||
4ebeee2d | 862 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL); |
0ebca7d6 MH |
863 | if (err < 0) |
864 | return err; | |
865 | ||
f640ee98 MH |
866 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
867 | hci_debugfs_create_basic(hdev); | |
868 | ||
0ebca7d6 MH |
869 | return 0; |
870 | } | |
871 | ||
a1d01db1 | 872 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
873 | { |
874 | __u8 scan = opt; | |
875 | ||
42c6b129 | 876 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
877 | |
878 | /* Inquiry and Page scans */ | |
42c6b129 | 879 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 880 | return 0; |
1da177e4 LT |
881 | } |
882 | ||
a1d01db1 | 883 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
884 | { |
885 | __u8 auth = opt; | |
886 | ||
42c6b129 | 887 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
888 | |
889 | /* Authentication */ | |
42c6b129 | 890 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 891 | return 0; |
1da177e4 LT |
892 | } |
893 | ||
a1d01db1 | 894 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
895 | { |
896 | __u8 encrypt = opt; | |
897 | ||
42c6b129 | 898 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 899 | |
e4e8e37c | 900 | /* Encryption */ |
42c6b129 | 901 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 902 | return 0; |
1da177e4 LT |
903 | } |
904 | ||
a1d01db1 | 905 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
906 | { |
907 | __le16 policy = cpu_to_le16(opt); | |
908 | ||
42c6b129 | 909 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
910 | |
911 | /* Default link policy */ | |
42c6b129 | 912 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 913 | return 0; |
e4e8e37c MH |
914 | } |
915 | ||
8e87d142 | 916 | /* Get HCI device by index. |
1da177e4 LT |
917 | * Device is held on return. */ |
918 | struct hci_dev *hci_dev_get(int index) | |
919 | { | |
8035ded4 | 920 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
921 | |
922 | BT_DBG("%d", index); | |
923 | ||
924 | if (index < 0) | |
925 | return NULL; | |
926 | ||
927 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 928 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
929 | if (d->id == index) { |
930 | hdev = hci_dev_hold(d); | |
931 | break; | |
932 | } | |
933 | } | |
934 | read_unlock(&hci_dev_list_lock); | |
935 | return hdev; | |
936 | } | |
1da177e4 LT |
937 | |
938 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 939 | |
30dc78e1 JH |
940 | bool hci_discovery_active(struct hci_dev *hdev) |
941 | { | |
942 | struct discovery_state *discov = &hdev->discovery; | |
943 | ||
6fbe195d | 944 | switch (discov->state) { |
343f935b | 945 | case DISCOVERY_FINDING: |
6fbe195d | 946 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
947 | return true; |
948 | ||
6fbe195d AG |
949 | default: |
950 | return false; | |
951 | } | |
30dc78e1 JH |
952 | } |
953 | ||
ff9ef578 JH |
954 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
955 | { | |
bb3e0a33 JH |
956 | int old_state = hdev->discovery.state; |
957 | ||
ff9ef578 JH |
958 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
959 | ||
bb3e0a33 | 960 | if (old_state == state) |
ff9ef578 JH |
961 | return; |
962 | ||
bb3e0a33 JH |
963 | hdev->discovery.state = state; |
964 | ||
ff9ef578 JH |
965 | switch (state) { |
966 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
967 | hci_update_background_scan(hdev); |
968 | ||
bb3e0a33 | 969 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 970 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
971 | break; |
972 | case DISCOVERY_STARTING: | |
973 | break; | |
343f935b | 974 | case DISCOVERY_FINDING: |
ff9ef578 JH |
975 | mgmt_discovering(hdev, 1); |
976 | break; | |
30dc78e1 JH |
977 | case DISCOVERY_RESOLVING: |
978 | break; | |
ff9ef578 JH |
979 | case DISCOVERY_STOPPING: |
980 | break; | |
981 | } | |
ff9ef578 JH |
982 | } |
983 | ||
1f9b9a5d | 984 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 985 | { |
30883512 | 986 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 987 | struct inquiry_entry *p, *n; |
1da177e4 | 988 | |
561aafbc JH |
989 | list_for_each_entry_safe(p, n, &cache->all, all) { |
990 | list_del(&p->all); | |
b57c1a56 | 991 | kfree(p); |
1da177e4 | 992 | } |
561aafbc JH |
993 | |
994 | INIT_LIST_HEAD(&cache->unknown); | |
995 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
996 | } |
997 | ||
a8c5fb1a GP |
998 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
999 | bdaddr_t *bdaddr) | |
1da177e4 | 1000 | { |
30883512 | 1001 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1002 | struct inquiry_entry *e; |
1003 | ||
6ed93dc6 | 1004 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1005 | |
561aafbc JH |
1006 | list_for_each_entry(e, &cache->all, all) { |
1007 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1008 | return e; | |
1009 | } | |
1010 | ||
1011 | return NULL; | |
1012 | } | |
1013 | ||
1014 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1015 | bdaddr_t *bdaddr) |
561aafbc | 1016 | { |
30883512 | 1017 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1018 | struct inquiry_entry *e; |
1019 | ||
6ed93dc6 | 1020 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1021 | |
1022 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1023 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1024 | return e; |
1025 | } | |
1026 | ||
1027 | return NULL; | |
1da177e4 LT |
1028 | } |
1029 | ||
30dc78e1 | 1030 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1031 | bdaddr_t *bdaddr, |
1032 | int state) | |
30dc78e1 JH |
1033 | { |
1034 | struct discovery_state *cache = &hdev->discovery; | |
1035 | struct inquiry_entry *e; | |
1036 | ||
6ed93dc6 | 1037 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1038 | |
1039 | list_for_each_entry(e, &cache->resolve, list) { | |
1040 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1041 | return e; | |
1042 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1043 | return e; | |
1044 | } | |
1045 | ||
1046 | return NULL; | |
1047 | } | |
1048 | ||
a3d4e20a | 1049 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1050 | struct inquiry_entry *ie) |
a3d4e20a JH |
1051 | { |
1052 | struct discovery_state *cache = &hdev->discovery; | |
1053 | struct list_head *pos = &cache->resolve; | |
1054 | struct inquiry_entry *p; | |
1055 | ||
1056 | list_del(&ie->list); | |
1057 | ||
1058 | list_for_each_entry(p, &cache->resolve, list) { | |
1059 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1060 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1061 | break; |
1062 | pos = &p->list; | |
1063 | } | |
1064 | ||
1065 | list_add(&ie->list, pos); | |
1066 | } | |
1067 | ||
af58925c MH |
1068 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1069 | bool name_known) | |
1da177e4 | 1070 | { |
30883512 | 1071 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1072 | struct inquiry_entry *ie; |
af58925c | 1073 | u32 flags = 0; |
1da177e4 | 1074 | |
6ed93dc6 | 1075 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1076 | |
6928a924 | 1077 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1078 | |
af58925c MH |
1079 | if (!data->ssp_mode) |
1080 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1081 | |
70f23020 | 1082 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1083 | if (ie) { |
af58925c MH |
1084 | if (!ie->data.ssp_mode) |
1085 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1086 | |
a3d4e20a | 1087 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1088 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1089 | ie->data.rssi = data->rssi; |
1090 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1091 | } | |
1092 | ||
561aafbc | 1093 | goto update; |
a3d4e20a | 1094 | } |
561aafbc JH |
1095 | |
1096 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1097 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1098 | if (!ie) { |
1099 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1100 | goto done; | |
1101 | } | |
561aafbc JH |
1102 | |
1103 | list_add(&ie->all, &cache->all); | |
1104 | ||
1105 | if (name_known) { | |
1106 | ie->name_state = NAME_KNOWN; | |
1107 | } else { | |
1108 | ie->name_state = NAME_NOT_KNOWN; | |
1109 | list_add(&ie->list, &cache->unknown); | |
1110 | } | |
70f23020 | 1111 | |
561aafbc JH |
1112 | update: |
1113 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1114 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1115 | ie->name_state = NAME_KNOWN; |
1116 | list_del(&ie->list); | |
1da177e4 LT |
1117 | } |
1118 | ||
70f23020 AE |
1119 | memcpy(&ie->data, data, sizeof(*data)); |
1120 | ie->timestamp = jiffies; | |
1da177e4 | 1121 | cache->timestamp = jiffies; |
3175405b JH |
1122 | |
1123 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1124 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1125 | |
af58925c MH |
1126 | done: |
1127 | return flags; | |
1da177e4 LT |
1128 | } |
1129 | ||
1130 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1131 | { | |
30883512 | 1132 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1133 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1134 | struct inquiry_entry *e; | |
1135 | int copied = 0; | |
1136 | ||
561aafbc | 1137 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1138 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1139 | |
1140 | if (copied >= num) | |
1141 | break; | |
1142 | ||
1da177e4 LT |
1143 | bacpy(&info->bdaddr, &data->bdaddr); |
1144 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1145 | info->pscan_period_mode = data->pscan_period_mode; | |
1146 | info->pscan_mode = data->pscan_mode; | |
1147 | memcpy(info->dev_class, data->dev_class, 3); | |
1148 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1149 | |
1da177e4 | 1150 | info++; |
b57c1a56 | 1151 | copied++; |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | BT_DBG("cache %p, copied %d", cache, copied); | |
1155 | return copied; | |
1156 | } | |
1157 | ||
a1d01db1 | 1158 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1159 | { |
1160 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1161 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1162 | struct hci_cp_inquiry cp; |
1163 | ||
1164 | BT_DBG("%s", hdev->name); | |
1165 | ||
1166 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 1167 | return 0; |
1da177e4 LT |
1168 | |
1169 | /* Start Inquiry */ | |
1170 | memcpy(&cp.lap, &ir->lap, 3); | |
1171 | cp.length = ir->length; | |
1172 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1173 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
1174 | |
1175 | return 0; | |
1da177e4 LT |
1176 | } |
1177 | ||
1178 | int hci_inquiry(void __user *arg) | |
1179 | { | |
1180 | __u8 __user *ptr = arg; | |
1181 | struct hci_inquiry_req ir; | |
1182 | struct hci_dev *hdev; | |
1183 | int err = 0, do_inquiry = 0, max_rsp; | |
1184 | long timeo; | |
1185 | __u8 *buf; | |
1186 | ||
1187 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1188 | return -EFAULT; | |
1189 | ||
5a08ecce AE |
1190 | hdev = hci_dev_get(ir.dev_id); |
1191 | if (!hdev) | |
1da177e4 LT |
1192 | return -ENODEV; |
1193 | ||
d7a5a11d | 1194 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1195 | err = -EBUSY; |
1196 | goto done; | |
1197 | } | |
1198 | ||
d7a5a11d | 1199 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1200 | err = -EOPNOTSUPP; |
1201 | goto done; | |
1202 | } | |
1203 | ||
5b69bef5 MH |
1204 | if (hdev->dev_type != HCI_BREDR) { |
1205 | err = -EOPNOTSUPP; | |
1206 | goto done; | |
1207 | } | |
1208 | ||
d7a5a11d | 1209 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1210 | err = -EOPNOTSUPP; |
1211 | goto done; | |
1212 | } | |
1213 | ||
09fd0de5 | 1214 | hci_dev_lock(hdev); |
8e87d142 | 1215 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1216 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1217 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1218 | do_inquiry = 1; |
1219 | } | |
09fd0de5 | 1220 | hci_dev_unlock(hdev); |
1da177e4 | 1221 | |
04837f64 | 1222 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1223 | |
1224 | if (do_inquiry) { | |
01178cd4 | 1225 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 1226 | timeo, NULL); |
70f23020 AE |
1227 | if (err < 0) |
1228 | goto done; | |
3e13fa1e AG |
1229 | |
1230 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1231 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1232 | */ | |
74316201 | 1233 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1234 | TASK_INTERRUPTIBLE)) |
1235 | return -EINTR; | |
70f23020 | 1236 | } |
1da177e4 | 1237 | |
8fc9ced3 GP |
1238 | /* for unlimited number of responses we will use buffer with |
1239 | * 255 entries | |
1240 | */ | |
1da177e4 LT |
1241 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1242 | ||
1243 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1244 | * copy it to the user space. | |
1245 | */ | |
01df8c31 | 1246 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1247 | if (!buf) { |
1da177e4 LT |
1248 | err = -ENOMEM; |
1249 | goto done; | |
1250 | } | |
1251 | ||
09fd0de5 | 1252 | hci_dev_lock(hdev); |
1da177e4 | 1253 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1254 | hci_dev_unlock(hdev); |
1da177e4 LT |
1255 | |
1256 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1257 | ||
1258 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1259 | ptr += sizeof(ir); | |
1260 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1261 | ir.num_rsp)) |
1da177e4 | 1262 | err = -EFAULT; |
8e87d142 | 1263 | } else |
1da177e4 LT |
1264 | err = -EFAULT; |
1265 | ||
1266 | kfree(buf); | |
1267 | ||
1268 | done: | |
1269 | hci_dev_put(hdev); | |
1270 | return err; | |
1271 | } | |
1272 | ||
cbed0ca1 | 1273 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1274 | { |
1da177e4 LT |
1275 | int ret = 0; |
1276 | ||
1da177e4 LT |
1277 | BT_DBG("%s %p", hdev->name, hdev); |
1278 | ||
b504430c | 1279 | hci_req_sync_lock(hdev); |
1da177e4 | 1280 | |
d7a5a11d | 1281 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1282 | ret = -ENODEV; |
1283 | goto done; | |
1284 | } | |
1285 | ||
d7a5a11d MH |
1286 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1287 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1288 | /* Check for rfkill but allow the HCI setup stage to |
1289 | * proceed (which in itself doesn't cause any RF activity). | |
1290 | */ | |
d7a5a11d | 1291 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1292 | ret = -ERFKILL; |
1293 | goto done; | |
1294 | } | |
1295 | ||
1296 | /* Check for valid public address or a configured static | |
1297 | * random adddress, but let the HCI setup proceed to | |
1298 | * be able to determine if there is a public address | |
1299 | * or not. | |
1300 | * | |
c6beca0e MH |
1301 | * In case of user channel usage, it is not important |
1302 | * if a public address or static random address is | |
1303 | * available. | |
1304 | * | |
a5c8f270 MH |
1305 | * This check is only valid for BR/EDR controllers |
1306 | * since AMP controllers do not have an address. | |
1307 | */ | |
d7a5a11d | 1308 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1309 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1310 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1311 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1312 | ret = -EADDRNOTAVAIL; | |
1313 | goto done; | |
1314 | } | |
611b30f7 MH |
1315 | } |
1316 | ||
1da177e4 LT |
1317 | if (test_bit(HCI_UP, &hdev->flags)) { |
1318 | ret = -EALREADY; | |
1319 | goto done; | |
1320 | } | |
1321 | ||
1da177e4 LT |
1322 | if (hdev->open(hdev)) { |
1323 | ret = -EIO; | |
1324 | goto done; | |
1325 | } | |
1326 | ||
e9ca8bf1 | 1327 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1328 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1329 | |
f41c70c4 MH |
1330 | atomic_set(&hdev->cmd_cnt, 1); |
1331 | set_bit(HCI_INIT, &hdev->flags); | |
1332 | ||
d7a5a11d | 1333 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
e131d74a MH |
1334 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1335 | ||
af202f84 MH |
1336 | if (hdev->setup) |
1337 | ret = hdev->setup(hdev); | |
f41c70c4 | 1338 | |
af202f84 MH |
1339 | /* The transport driver can set these quirks before |
1340 | * creating the HCI device or in its setup callback. | |
1341 | * | |
1342 | * In case any of them is set, the controller has to | |
1343 | * start up as unconfigured. | |
1344 | */ | |
eb1904f4 MH |
1345 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1346 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1347 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1348 | |
0ebca7d6 MH |
1349 | /* For an unconfigured controller it is required to |
1350 | * read at least the version information provided by | |
1351 | * the Read Local Version Information command. | |
1352 | * | |
1353 | * If the set_bdaddr driver callback is provided, then | |
1354 | * also the original Bluetooth public device address | |
1355 | * will be read using the Read BD Address command. | |
1356 | */ | |
d7a5a11d | 1357 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1358 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1359 | } |
1360 | ||
d7a5a11d | 1361 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1362 | /* If public address change is configured, ensure that |
1363 | * the address gets programmed. If the driver does not | |
1364 | * support changing the public address, fail the power | |
1365 | * on procedure. | |
1366 | */ | |
1367 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1368 | hdev->set_bdaddr) | |
24c457e2 MH |
1369 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1370 | else | |
1371 | ret = -EADDRNOTAVAIL; | |
1372 | } | |
1373 | ||
f41c70c4 | 1374 | if (!ret) { |
d7a5a11d | 1375 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1376 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1377 | ret = __hci_init(hdev); |
98a63aaf MH |
1378 | if (!ret && hdev->post_init) |
1379 | ret = hdev->post_init(hdev); | |
1380 | } | |
1da177e4 LT |
1381 | } |
1382 | ||
7e995b9e MH |
1383 | /* If the HCI Reset command is clearing all diagnostic settings, |
1384 | * then they need to be reprogrammed after the init procedure | |
1385 | * completed. | |
1386 | */ | |
1387 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
1388 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) | |
1389 | ret = hdev->set_diag(hdev, true); | |
1390 | ||
f41c70c4 MH |
1391 | clear_bit(HCI_INIT, &hdev->flags); |
1392 | ||
1da177e4 LT |
1393 | if (!ret) { |
1394 | hci_dev_hold(hdev); | |
a1536da2 | 1395 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 | 1396 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1397 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
d7a5a11d MH |
1398 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1399 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1400 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1401 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
2ff13894 | 1402 | hci_dev_test_flag(hdev, HCI_MGMT) && |
1514b892 | 1403 | hdev->dev_type == HCI_BREDR) { |
2ff13894 JH |
1404 | ret = __hci_req_hci_power_on(hdev); |
1405 | mgmt_power_on(hdev, ret); | |
56e5cb86 | 1406 | } |
8e87d142 | 1407 | } else { |
1da177e4 | 1408 | /* Init failed, cleanup */ |
3eff45ea | 1409 | flush_work(&hdev->tx_work); |
c347b765 | 1410 | flush_work(&hdev->cmd_work); |
b78752cc | 1411 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1412 | |
1413 | skb_queue_purge(&hdev->cmd_q); | |
1414 | skb_queue_purge(&hdev->rx_q); | |
1415 | ||
1416 | if (hdev->flush) | |
1417 | hdev->flush(hdev); | |
1418 | ||
1419 | if (hdev->sent_cmd) { | |
1420 | kfree_skb(hdev->sent_cmd); | |
1421 | hdev->sent_cmd = NULL; | |
1422 | } | |
1423 | ||
e9ca8bf1 | 1424 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1425 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1426 | |
1da177e4 | 1427 | hdev->close(hdev); |
fee746b0 | 1428 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | done: | |
b504430c | 1432 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1433 | return ret; |
1434 | } | |
1435 | ||
cbed0ca1 JH |
1436 | /* ---- HCI ioctl helpers ---- */ |
1437 | ||
1438 | int hci_dev_open(__u16 dev) | |
1439 | { | |
1440 | struct hci_dev *hdev; | |
1441 | int err; | |
1442 | ||
1443 | hdev = hci_dev_get(dev); | |
1444 | if (!hdev) | |
1445 | return -ENODEV; | |
1446 | ||
4a964404 | 1447 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1448 | * up as user channel. Trying to bring them up as normal devices |
1449 | * will result into a failure. Only user channel operation is | |
1450 | * possible. | |
1451 | * | |
1452 | * When this function is called for a user channel, the flag | |
1453 | * HCI_USER_CHANNEL will be set first before attempting to | |
1454 | * open the device. | |
1455 | */ | |
d7a5a11d MH |
1456 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1457 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1458 | err = -EOPNOTSUPP; |
1459 | goto done; | |
1460 | } | |
1461 | ||
e1d08f40 JH |
1462 | /* We need to ensure that no other power on/off work is pending |
1463 | * before proceeding to call hci_dev_do_open. This is | |
1464 | * particularly important if the setup procedure has not yet | |
1465 | * completed. | |
1466 | */ | |
a69d8927 | 1467 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1468 | cancel_delayed_work(&hdev->power_off); |
1469 | ||
a5c8f270 MH |
1470 | /* After this call it is guaranteed that the setup procedure |
1471 | * has finished. This means that error conditions like RFKILL | |
1472 | * or no valid public or static random address apply. | |
1473 | */ | |
e1d08f40 JH |
1474 | flush_workqueue(hdev->req_workqueue); |
1475 | ||
12aa4f0a | 1476 | /* For controllers not using the management interface and that |
b6ae8457 | 1477 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1478 | * so that pairing works for them. Once the management interface |
1479 | * is in use this bit will be cleared again and userspace has | |
1480 | * to explicitly enable it. | |
1481 | */ | |
d7a5a11d MH |
1482 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1483 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1484 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1485 | |
cbed0ca1 JH |
1486 | err = hci_dev_do_open(hdev); |
1487 | ||
fee746b0 | 1488 | done: |
cbed0ca1 | 1489 | hci_dev_put(hdev); |
cbed0ca1 JH |
1490 | return err; |
1491 | } | |
1492 | ||
d7347f3c JH |
1493 | /* This function requires the caller holds hdev->lock */ |
1494 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1495 | { | |
1496 | struct hci_conn_params *p; | |
1497 | ||
f161dd41 JH |
1498 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1499 | if (p->conn) { | |
1500 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1501 | hci_conn_put(p->conn); |
f161dd41 JH |
1502 | p->conn = NULL; |
1503 | } | |
d7347f3c | 1504 | list_del_init(&p->action); |
f161dd41 | 1505 | } |
d7347f3c JH |
1506 | |
1507 | BT_DBG("All LE pending actions cleared"); | |
1508 | } | |
1509 | ||
6b3cc1db | 1510 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1511 | { |
acc649c6 MH |
1512 | bool auto_off; |
1513 | ||
1da177e4 LT |
1514 | BT_DBG("%s %p", hdev->name, hdev); |
1515 | ||
d24d8144 | 1516 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1517 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1518 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1519 | /* Execute vendor specific shutdown routine */ |
1520 | if (hdev->shutdown) | |
1521 | hdev->shutdown(hdev); | |
1522 | } | |
1523 | ||
78c04c0b VCG |
1524 | cancel_delayed_work(&hdev->power_off); |
1525 | ||
7df0f73e | 1526 | hci_request_cancel_all(hdev); |
b504430c | 1527 | hci_req_sync_lock(hdev); |
1da177e4 LT |
1528 | |
1529 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1530 | cancel_delayed_work_sync(&hdev->cmd_timer); |
b504430c | 1531 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1532 | return 0; |
1533 | } | |
1534 | ||
3eff45ea GP |
1535 | /* Flush RX and TX works */ |
1536 | flush_work(&hdev->tx_work); | |
b78752cc | 1537 | flush_work(&hdev->rx_work); |
1da177e4 | 1538 | |
16ab91ab | 1539 | if (hdev->discov_timeout > 0) { |
16ab91ab | 1540 | hdev->discov_timeout = 0; |
a358dc11 MH |
1541 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1542 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1543 | } |
1544 | ||
a69d8927 | 1545 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1546 | cancel_delayed_work(&hdev->service_cache); |
1547 | ||
d7a5a11d | 1548 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1549 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1550 | |
76727c02 JH |
1551 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1552 | * ensuring the workqueue is empty up front. | |
1553 | */ | |
1554 | drain_workqueue(hdev->workqueue); | |
1555 | ||
09fd0de5 | 1556 | hci_dev_lock(hdev); |
1aeb9c65 | 1557 | |
8f502f84 JH |
1558 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1559 | ||
acc649c6 MH |
1560 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1561 | ||
2ff13894 JH |
1562 | if (!auto_off && hdev->dev_type == HCI_BREDR && |
1563 | hci_dev_test_flag(hdev, HCI_MGMT)) | |
1564 | __mgmt_power_off(hdev); | |
1aeb9c65 | 1565 | |
1f9b9a5d | 1566 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1567 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1568 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1569 | hci_dev_unlock(hdev); |
1da177e4 | 1570 | |
64dae967 MH |
1571 | smp_unregister(hdev); |
1572 | ||
05fcd4c4 | 1573 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1574 | |
1575 | if (hdev->flush) | |
1576 | hdev->flush(hdev); | |
1577 | ||
1578 | /* Reset device */ | |
1579 | skb_queue_purge(&hdev->cmd_q); | |
1580 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1581 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1582 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1583 | set_bit(HCI_INIT, &hdev->flags); |
4ebeee2d | 1584 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL); |
1da177e4 LT |
1585 | clear_bit(HCI_INIT, &hdev->flags); |
1586 | } | |
1587 | ||
c347b765 GP |
1588 | /* flush cmd work */ |
1589 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1590 | |
1591 | /* Drop queues */ | |
1592 | skb_queue_purge(&hdev->rx_q); | |
1593 | skb_queue_purge(&hdev->cmd_q); | |
1594 | skb_queue_purge(&hdev->raw_q); | |
1595 | ||
1596 | /* Drop last sent command */ | |
1597 | if (hdev->sent_cmd) { | |
65cc2b49 | 1598 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1599 | kfree_skb(hdev->sent_cmd); |
1600 | hdev->sent_cmd = NULL; | |
1601 | } | |
1602 | ||
e9ca8bf1 | 1603 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1604 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1605 | |
1da177e4 LT |
1606 | /* After this point our queues are empty |
1607 | * and no tasks are scheduled. */ | |
1608 | hdev->close(hdev); | |
1609 | ||
35b973c9 | 1610 | /* Clear flags */ |
fee746b0 | 1611 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1612 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1613 | |
ced5c338 | 1614 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1615 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1616 | |
e59fda8d | 1617 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1618 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1619 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1620 | |
b504430c | 1621 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1622 | |
1623 | hci_dev_put(hdev); | |
1624 | return 0; | |
1625 | } | |
1626 | ||
1627 | int hci_dev_close(__u16 dev) | |
1628 | { | |
1629 | struct hci_dev *hdev; | |
1630 | int err; | |
1631 | ||
70f23020 AE |
1632 | hdev = hci_dev_get(dev); |
1633 | if (!hdev) | |
1da177e4 | 1634 | return -ENODEV; |
8ee56540 | 1635 | |
d7a5a11d | 1636 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1637 | err = -EBUSY; |
1638 | goto done; | |
1639 | } | |
1640 | ||
a69d8927 | 1641 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1642 | cancel_delayed_work(&hdev->power_off); |
1643 | ||
1da177e4 | 1644 | err = hci_dev_do_close(hdev); |
8ee56540 | 1645 | |
0736cfa8 | 1646 | done: |
1da177e4 LT |
1647 | hci_dev_put(hdev); |
1648 | return err; | |
1649 | } | |
1650 | ||
5c912495 | 1651 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1652 | { |
5c912495 | 1653 | int ret; |
1da177e4 | 1654 | |
5c912495 | 1655 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 1656 | |
b504430c | 1657 | hci_req_sync_lock(hdev); |
1da177e4 | 1658 | |
1da177e4 LT |
1659 | /* Drop queues */ |
1660 | skb_queue_purge(&hdev->rx_q); | |
1661 | skb_queue_purge(&hdev->cmd_q); | |
1662 | ||
76727c02 JH |
1663 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1664 | * ensuring the workqueue is empty up front. | |
1665 | */ | |
1666 | drain_workqueue(hdev->workqueue); | |
1667 | ||
09fd0de5 | 1668 | hci_dev_lock(hdev); |
1f9b9a5d | 1669 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1670 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1671 | hci_dev_unlock(hdev); |
1da177e4 LT |
1672 | |
1673 | if (hdev->flush) | |
1674 | hdev->flush(hdev); | |
1675 | ||
8e87d142 | 1676 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1677 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1678 | |
4ebeee2d | 1679 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL); |
1da177e4 | 1680 | |
b504430c | 1681 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1682 | return ret; |
1683 | } | |
1684 | ||
5c912495 MH |
1685 | int hci_dev_reset(__u16 dev) |
1686 | { | |
1687 | struct hci_dev *hdev; | |
1688 | int err; | |
1689 | ||
1690 | hdev = hci_dev_get(dev); | |
1691 | if (!hdev) | |
1692 | return -ENODEV; | |
1693 | ||
1694 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1695 | err = -ENETDOWN; | |
1696 | goto done; | |
1697 | } | |
1698 | ||
d7a5a11d | 1699 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1700 | err = -EBUSY; |
1701 | goto done; | |
1702 | } | |
1703 | ||
d7a5a11d | 1704 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1705 | err = -EOPNOTSUPP; |
1706 | goto done; | |
1707 | } | |
1708 | ||
1709 | err = hci_dev_do_reset(hdev); | |
1710 | ||
1711 | done: | |
1712 | hci_dev_put(hdev); | |
1713 | return err; | |
1714 | } | |
1715 | ||
1da177e4 LT |
1716 | int hci_dev_reset_stat(__u16 dev) |
1717 | { | |
1718 | struct hci_dev *hdev; | |
1719 | int ret = 0; | |
1720 | ||
70f23020 AE |
1721 | hdev = hci_dev_get(dev); |
1722 | if (!hdev) | |
1da177e4 LT |
1723 | return -ENODEV; |
1724 | ||
d7a5a11d | 1725 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1726 | ret = -EBUSY; |
1727 | goto done; | |
1728 | } | |
1729 | ||
d7a5a11d | 1730 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1731 | ret = -EOPNOTSUPP; |
1732 | goto done; | |
1733 | } | |
1734 | ||
1da177e4 LT |
1735 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1736 | ||
0736cfa8 | 1737 | done: |
1da177e4 | 1738 | hci_dev_put(hdev); |
1da177e4 LT |
1739 | return ret; |
1740 | } | |
1741 | ||
123abc08 JH |
1742 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1743 | { | |
bc6d2d04 | 1744 | bool conn_changed, discov_changed; |
123abc08 JH |
1745 | |
1746 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1747 | ||
1748 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1749 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1750 | HCI_CONNECTABLE); | |
123abc08 | 1751 | else |
a69d8927 MH |
1752 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1753 | HCI_CONNECTABLE); | |
123abc08 | 1754 | |
bc6d2d04 | 1755 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1756 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1757 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1758 | } else { |
a358dc11 | 1759 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1760 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1761 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1762 | } |
1763 | ||
d7a5a11d | 1764 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1765 | return; |
1766 | ||
bc6d2d04 JH |
1767 | if (conn_changed || discov_changed) { |
1768 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1769 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1770 | |
d7a5a11d | 1771 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
cab054ab | 1772 | hci_req_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 1773 | |
123abc08 | 1774 | mgmt_new_settings(hdev); |
bc6d2d04 | 1775 | } |
123abc08 JH |
1776 | } |
1777 | ||
1da177e4 LT |
1778 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1779 | { | |
1780 | struct hci_dev *hdev; | |
1781 | struct hci_dev_req dr; | |
1782 | int err = 0; | |
1783 | ||
1784 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1785 | return -EFAULT; | |
1786 | ||
70f23020 AE |
1787 | hdev = hci_dev_get(dr.dev_id); |
1788 | if (!hdev) | |
1da177e4 LT |
1789 | return -ENODEV; |
1790 | ||
d7a5a11d | 1791 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1792 | err = -EBUSY; |
1793 | goto done; | |
1794 | } | |
1795 | ||
d7a5a11d | 1796 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1797 | err = -EOPNOTSUPP; |
1798 | goto done; | |
1799 | } | |
1800 | ||
5b69bef5 MH |
1801 | if (hdev->dev_type != HCI_BREDR) { |
1802 | err = -EOPNOTSUPP; | |
1803 | goto done; | |
1804 | } | |
1805 | ||
d7a5a11d | 1806 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1807 | err = -EOPNOTSUPP; |
1808 | goto done; | |
1809 | } | |
1810 | ||
1da177e4 LT |
1811 | switch (cmd) { |
1812 | case HCISETAUTH: | |
01178cd4 | 1813 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1814 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1815 | break; |
1816 | ||
1817 | case HCISETENCRYPT: | |
1818 | if (!lmp_encrypt_capable(hdev)) { | |
1819 | err = -EOPNOTSUPP; | |
1820 | break; | |
1821 | } | |
1822 | ||
1823 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1824 | /* Auth must be enabled first */ | |
01178cd4 | 1825 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1826 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1827 | if (err) |
1828 | break; | |
1829 | } | |
1830 | ||
01178cd4 | 1831 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 1832 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1833 | break; |
1834 | ||
1835 | case HCISETSCAN: | |
01178cd4 | 1836 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 1837 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 1838 | |
bc6d2d04 JH |
1839 | /* Ensure that the connectable and discoverable states |
1840 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1841 | */ |
123abc08 JH |
1842 | if (!err) |
1843 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1844 | break; |
1845 | ||
1da177e4 | 1846 | case HCISETLINKPOL: |
01178cd4 | 1847 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 1848 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1849 | break; |
1850 | ||
1851 | case HCISETLINKMODE: | |
e4e8e37c MH |
1852 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1853 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1854 | break; | |
1855 | ||
1856 | case HCISETPTYPE: | |
1857 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1858 | break; |
1859 | ||
1860 | case HCISETACLMTU: | |
e4e8e37c MH |
1861 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1862 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1863 | break; |
1864 | ||
1865 | case HCISETSCOMTU: | |
e4e8e37c MH |
1866 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1867 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1868 | break; |
1869 | ||
1870 | default: | |
1871 | err = -EINVAL; | |
1872 | break; | |
1873 | } | |
e4e8e37c | 1874 | |
0736cfa8 | 1875 | done: |
1da177e4 LT |
1876 | hci_dev_put(hdev); |
1877 | return err; | |
1878 | } | |
1879 | ||
1880 | int hci_get_dev_list(void __user *arg) | |
1881 | { | |
8035ded4 | 1882 | struct hci_dev *hdev; |
1da177e4 LT |
1883 | struct hci_dev_list_req *dl; |
1884 | struct hci_dev_req *dr; | |
1da177e4 LT |
1885 | int n = 0, size, err; |
1886 | __u16 dev_num; | |
1887 | ||
1888 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1889 | return -EFAULT; | |
1890 | ||
1891 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1892 | return -EINVAL; | |
1893 | ||
1894 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1895 | ||
70f23020 AE |
1896 | dl = kzalloc(size, GFP_KERNEL); |
1897 | if (!dl) | |
1da177e4 LT |
1898 | return -ENOMEM; |
1899 | ||
1900 | dr = dl->dev_req; | |
1901 | ||
f20d09d5 | 1902 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1903 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1904 | unsigned long flags = hdev->flags; |
c542a06c | 1905 | |
2e84d8db MH |
1906 | /* When the auto-off is configured it means the transport |
1907 | * is running, but in that case still indicate that the | |
1908 | * device is actually down. | |
1909 | */ | |
d7a5a11d | 1910 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1911 | flags &= ~BIT(HCI_UP); |
c542a06c | 1912 | |
1da177e4 | 1913 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1914 | (dr + n)->dev_opt = flags; |
c542a06c | 1915 | |
1da177e4 LT |
1916 | if (++n >= dev_num) |
1917 | break; | |
1918 | } | |
f20d09d5 | 1919 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1920 | |
1921 | dl->dev_num = n; | |
1922 | size = sizeof(*dl) + n * sizeof(*dr); | |
1923 | ||
1924 | err = copy_to_user(arg, dl, size); | |
1925 | kfree(dl); | |
1926 | ||
1927 | return err ? -EFAULT : 0; | |
1928 | } | |
1929 | ||
1930 | int hci_get_dev_info(void __user *arg) | |
1931 | { | |
1932 | struct hci_dev *hdev; | |
1933 | struct hci_dev_info di; | |
2e84d8db | 1934 | unsigned long flags; |
1da177e4 LT |
1935 | int err = 0; |
1936 | ||
1937 | if (copy_from_user(&di, arg, sizeof(di))) | |
1938 | return -EFAULT; | |
1939 | ||
70f23020 AE |
1940 | hdev = hci_dev_get(di.dev_id); |
1941 | if (!hdev) | |
1da177e4 LT |
1942 | return -ENODEV; |
1943 | ||
2e84d8db MH |
1944 | /* When the auto-off is configured it means the transport |
1945 | * is running, but in that case still indicate that the | |
1946 | * device is actually down. | |
1947 | */ | |
d7a5a11d | 1948 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1949 | flags = hdev->flags & ~BIT(HCI_UP); |
1950 | else | |
1951 | flags = hdev->flags; | |
c542a06c | 1952 | |
1da177e4 LT |
1953 | strcpy(di.name, hdev->name); |
1954 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1955 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 1956 | di.flags = flags; |
1da177e4 | 1957 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
1958 | if (lmp_bredr_capable(hdev)) { |
1959 | di.acl_mtu = hdev->acl_mtu; | |
1960 | di.acl_pkts = hdev->acl_pkts; | |
1961 | di.sco_mtu = hdev->sco_mtu; | |
1962 | di.sco_pkts = hdev->sco_pkts; | |
1963 | } else { | |
1964 | di.acl_mtu = hdev->le_mtu; | |
1965 | di.acl_pkts = hdev->le_pkts; | |
1966 | di.sco_mtu = 0; | |
1967 | di.sco_pkts = 0; | |
1968 | } | |
1da177e4 LT |
1969 | di.link_policy = hdev->link_policy; |
1970 | di.link_mode = hdev->link_mode; | |
1971 | ||
1972 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1973 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1974 | ||
1975 | if (copy_to_user(arg, &di, sizeof(di))) | |
1976 | err = -EFAULT; | |
1977 | ||
1978 | hci_dev_put(hdev); | |
1979 | ||
1980 | return err; | |
1981 | } | |
1982 | ||
1983 | /* ---- Interface to HCI drivers ---- */ | |
1984 | ||
611b30f7 MH |
1985 | static int hci_rfkill_set_block(void *data, bool blocked) |
1986 | { | |
1987 | struct hci_dev *hdev = data; | |
1988 | ||
1989 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1990 | ||
d7a5a11d | 1991 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
1992 | return -EBUSY; |
1993 | ||
5e130367 | 1994 | if (blocked) { |
a1536da2 | 1995 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
1996 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1997 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 1998 | hci_dev_do_close(hdev); |
5e130367 | 1999 | } else { |
a358dc11 | 2000 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2001 | } |
611b30f7 MH |
2002 | |
2003 | return 0; | |
2004 | } | |
2005 | ||
2006 | static const struct rfkill_ops hci_rfkill_ops = { | |
2007 | .set_block = hci_rfkill_set_block, | |
2008 | }; | |
2009 | ||
ab81cbf9 JH |
2010 | static void hci_power_on(struct work_struct *work) |
2011 | { | |
2012 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2013 | int err; |
ab81cbf9 JH |
2014 | |
2015 | BT_DBG("%s", hdev->name); | |
2016 | ||
2ff13894 JH |
2017 | if (test_bit(HCI_UP, &hdev->flags) && |
2018 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
2019 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
2020 | hci_req_sync_lock(hdev); | |
2021 | err = __hci_req_hci_power_on(hdev); | |
2022 | hci_req_sync_unlock(hdev); | |
2023 | mgmt_power_on(hdev, err); | |
2024 | return; | |
2025 | } | |
2026 | ||
cbed0ca1 | 2027 | err = hci_dev_do_open(hdev); |
96570ffc | 2028 | if (err < 0) { |
3ad67582 | 2029 | hci_dev_lock(hdev); |
96570ffc | 2030 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2031 | hci_dev_unlock(hdev); |
ab81cbf9 | 2032 | return; |
96570ffc | 2033 | } |
ab81cbf9 | 2034 | |
a5c8f270 MH |
2035 | /* During the HCI setup phase, a few error conditions are |
2036 | * ignored and they need to be checked now. If they are still | |
2037 | * valid, it is important to turn the device back off. | |
2038 | */ | |
d7a5a11d MH |
2039 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2040 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2041 | (hdev->dev_type == HCI_BREDR && |
2042 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2043 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2044 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2045 | hci_dev_do_close(hdev); |
d7a5a11d | 2046 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2047 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2048 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2049 | } |
ab81cbf9 | 2050 | |
a69d8927 | 2051 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2052 | /* For unconfigured devices, set the HCI_RAW flag |
2053 | * so that userspace can easily identify them. | |
4a964404 | 2054 | */ |
d7a5a11d | 2055 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2056 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2057 | |
2058 | /* For fully configured devices, this will send | |
2059 | * the Index Added event. For unconfigured devices, | |
2060 | * it will send Unconfigued Index Added event. | |
2061 | * | |
2062 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2063 | * and no event will be send. | |
2064 | */ | |
2065 | mgmt_index_added(hdev); | |
a69d8927 | 2066 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2067 | /* When the controller is now configured, then it |
2068 | * is important to clear the HCI_RAW flag. | |
2069 | */ | |
d7a5a11d | 2070 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2071 | clear_bit(HCI_RAW, &hdev->flags); |
2072 | ||
d603b76b MH |
2073 | /* Powering on the controller with HCI_CONFIG set only |
2074 | * happens with the transition from unconfigured to | |
2075 | * configured. This will send the Index Added event. | |
2076 | */ | |
744cf19e | 2077 | mgmt_index_added(hdev); |
fee746b0 | 2078 | } |
ab81cbf9 JH |
2079 | } |
2080 | ||
2081 | static void hci_power_off(struct work_struct *work) | |
2082 | { | |
3243553f | 2083 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2084 | power_off.work); |
ab81cbf9 JH |
2085 | |
2086 | BT_DBG("%s", hdev->name); | |
2087 | ||
8ee56540 | 2088 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2089 | } |
2090 | ||
c7741d16 MH |
2091 | static void hci_error_reset(struct work_struct *work) |
2092 | { | |
2093 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2094 | ||
2095 | BT_DBG("%s", hdev->name); | |
2096 | ||
2097 | if (hdev->hw_error) | |
2098 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2099 | else | |
2100 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2101 | hdev->hw_error_code); | |
2102 | ||
2103 | if (hci_dev_do_close(hdev)) | |
2104 | return; | |
2105 | ||
c7741d16 MH |
2106 | hci_dev_do_open(hdev); |
2107 | } | |
2108 | ||
35f7498a | 2109 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2110 | { |
4821002c | 2111 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2112 | |
4821002c JH |
2113 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2114 | list_del(&uuid->list); | |
2aeb9a1a JH |
2115 | kfree(uuid); |
2116 | } | |
2aeb9a1a JH |
2117 | } |
2118 | ||
35f7498a | 2119 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2120 | { |
0378b597 | 2121 | struct link_key *key; |
55ed8ca1 | 2122 | |
0378b597 JH |
2123 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2124 | list_del_rcu(&key->list); | |
2125 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2126 | } |
55ed8ca1 JH |
2127 | } |
2128 | ||
35f7498a | 2129 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2130 | { |
970d0f1b | 2131 | struct smp_ltk *k; |
b899efaf | 2132 | |
970d0f1b JH |
2133 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2134 | list_del_rcu(&k->list); | |
2135 | kfree_rcu(k, rcu); | |
b899efaf | 2136 | } |
b899efaf VCG |
2137 | } |
2138 | ||
970c4e46 JH |
2139 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2140 | { | |
adae20cb | 2141 | struct smp_irk *k; |
970c4e46 | 2142 | |
adae20cb JH |
2143 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2144 | list_del_rcu(&k->list); | |
2145 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2146 | } |
2147 | } | |
2148 | ||
55ed8ca1 JH |
2149 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2150 | { | |
8035ded4 | 2151 | struct link_key *k; |
55ed8ca1 | 2152 | |
0378b597 JH |
2153 | rcu_read_lock(); |
2154 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2155 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2156 | rcu_read_unlock(); | |
55ed8ca1 | 2157 | return k; |
0378b597 JH |
2158 | } |
2159 | } | |
2160 | rcu_read_unlock(); | |
55ed8ca1 JH |
2161 | |
2162 | return NULL; | |
2163 | } | |
2164 | ||
745c0ce3 | 2165 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2166 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2167 | { |
2168 | /* Legacy key */ | |
2169 | if (key_type < 0x03) | |
745c0ce3 | 2170 | return true; |
d25e28ab JH |
2171 | |
2172 | /* Debug keys are insecure so don't store them persistently */ | |
2173 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2174 | return false; |
d25e28ab JH |
2175 | |
2176 | /* Changed combination key and there's no previous one */ | |
2177 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2178 | return false; |
d25e28ab JH |
2179 | |
2180 | /* Security mode 3 case */ | |
2181 | if (!conn) | |
745c0ce3 | 2182 | return true; |
d25e28ab | 2183 | |
e3befab9 JH |
2184 | /* BR/EDR key derived using SC from an LE link */ |
2185 | if (conn->type == LE_LINK) | |
2186 | return true; | |
2187 | ||
d25e28ab JH |
2188 | /* Neither local nor remote side had no-bonding as requirement */ |
2189 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2190 | return true; |
d25e28ab JH |
2191 | |
2192 | /* Local side had dedicated bonding as requirement */ | |
2193 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2194 | return true; |
d25e28ab JH |
2195 | |
2196 | /* Remote side had dedicated bonding as requirement */ | |
2197 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2198 | return true; |
d25e28ab JH |
2199 | |
2200 | /* If none of the above criteria match, then don't store the key | |
2201 | * persistently */ | |
745c0ce3 | 2202 | return false; |
d25e28ab JH |
2203 | } |
2204 | ||
e804d25d | 2205 | static u8 ltk_role(u8 type) |
98a0b845 | 2206 | { |
e804d25d JH |
2207 | if (type == SMP_LTK) |
2208 | return HCI_ROLE_MASTER; | |
98a0b845 | 2209 | |
e804d25d | 2210 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2211 | } |
2212 | ||
f3a73d97 JH |
2213 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2214 | u8 addr_type, u8 role) | |
75d262c2 | 2215 | { |
c9839a11 | 2216 | struct smp_ltk *k; |
75d262c2 | 2217 | |
970d0f1b JH |
2218 | rcu_read_lock(); |
2219 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2220 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2221 | continue; | |
2222 | ||
923e2414 | 2223 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2224 | rcu_read_unlock(); |
75d262c2 | 2225 | return k; |
970d0f1b JH |
2226 | } |
2227 | } | |
2228 | rcu_read_unlock(); | |
75d262c2 VCG |
2229 | |
2230 | return NULL; | |
2231 | } | |
75d262c2 | 2232 | |
970c4e46 JH |
2233 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2234 | { | |
2235 | struct smp_irk *irk; | |
2236 | ||
adae20cb JH |
2237 | rcu_read_lock(); |
2238 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2239 | if (!bacmp(&irk->rpa, rpa)) { | |
2240 | rcu_read_unlock(); | |
970c4e46 | 2241 | return irk; |
adae20cb | 2242 | } |
970c4e46 JH |
2243 | } |
2244 | ||
adae20cb | 2245 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2246 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2247 | bacpy(&irk->rpa, rpa); |
adae20cb | 2248 | rcu_read_unlock(); |
970c4e46 JH |
2249 | return irk; |
2250 | } | |
2251 | } | |
adae20cb | 2252 | rcu_read_unlock(); |
970c4e46 JH |
2253 | |
2254 | return NULL; | |
2255 | } | |
2256 | ||
2257 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2258 | u8 addr_type) | |
2259 | { | |
2260 | struct smp_irk *irk; | |
2261 | ||
6cfc9988 JH |
2262 | /* Identity Address must be public or static random */ |
2263 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2264 | return NULL; | |
2265 | ||
adae20cb JH |
2266 | rcu_read_lock(); |
2267 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2268 | if (addr_type == irk->addr_type && |
adae20cb JH |
2269 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2270 | rcu_read_unlock(); | |
970c4e46 | 2271 | return irk; |
adae20cb | 2272 | } |
970c4e46 | 2273 | } |
adae20cb | 2274 | rcu_read_unlock(); |
970c4e46 JH |
2275 | |
2276 | return NULL; | |
2277 | } | |
2278 | ||
567fa2aa | 2279 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2280 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2281 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2282 | { |
2283 | struct link_key *key, *old_key; | |
745c0ce3 | 2284 | u8 old_key_type; |
55ed8ca1 JH |
2285 | |
2286 | old_key = hci_find_link_key(hdev, bdaddr); | |
2287 | if (old_key) { | |
2288 | old_key_type = old_key->type; | |
2289 | key = old_key; | |
2290 | } else { | |
12adcf3a | 2291 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2292 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2293 | if (!key) |
567fa2aa | 2294 | return NULL; |
0378b597 | 2295 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2296 | } |
2297 | ||
6ed93dc6 | 2298 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2299 | |
d25e28ab JH |
2300 | /* Some buggy controller combinations generate a changed |
2301 | * combination key for legacy pairing even when there's no | |
2302 | * previous key */ | |
2303 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2304 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2305 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2306 | if (conn) |
2307 | conn->key_type = type; | |
2308 | } | |
d25e28ab | 2309 | |
55ed8ca1 | 2310 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2311 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2312 | key->pin_len = pin_len; |
2313 | ||
b6020ba0 | 2314 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2315 | key->type = old_key_type; |
4748fed2 JH |
2316 | else |
2317 | key->type = type; | |
2318 | ||
7652ff6a JH |
2319 | if (persistent) |
2320 | *persistent = hci_persistent_key(hdev, conn, type, | |
2321 | old_key_type); | |
4df378a1 | 2322 | |
567fa2aa | 2323 | return key; |
55ed8ca1 JH |
2324 | } |
2325 | ||
ca9142b8 | 2326 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2327 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2328 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2329 | { |
c9839a11 | 2330 | struct smp_ltk *key, *old_key; |
e804d25d | 2331 | u8 role = ltk_role(type); |
75d262c2 | 2332 | |
f3a73d97 | 2333 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2334 | if (old_key) |
75d262c2 | 2335 | key = old_key; |
c9839a11 | 2336 | else { |
0a14ab41 | 2337 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2338 | if (!key) |
ca9142b8 | 2339 | return NULL; |
970d0f1b | 2340 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2341 | } |
2342 | ||
75d262c2 | 2343 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2344 | key->bdaddr_type = addr_type; |
2345 | memcpy(key->val, tk, sizeof(key->val)); | |
2346 | key->authenticated = authenticated; | |
2347 | key->ediv = ediv; | |
fe39c7b2 | 2348 | key->rand = rand; |
c9839a11 VCG |
2349 | key->enc_size = enc_size; |
2350 | key->type = type; | |
75d262c2 | 2351 | |
ca9142b8 | 2352 | return key; |
75d262c2 VCG |
2353 | } |
2354 | ||
ca9142b8 JH |
2355 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2356 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2357 | { |
2358 | struct smp_irk *irk; | |
2359 | ||
2360 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2361 | if (!irk) { | |
2362 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2363 | if (!irk) | |
ca9142b8 | 2364 | return NULL; |
970c4e46 JH |
2365 | |
2366 | bacpy(&irk->bdaddr, bdaddr); | |
2367 | irk->addr_type = addr_type; | |
2368 | ||
adae20cb | 2369 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2370 | } |
2371 | ||
2372 | memcpy(irk->val, val, 16); | |
2373 | bacpy(&irk->rpa, rpa); | |
2374 | ||
ca9142b8 | 2375 | return irk; |
970c4e46 JH |
2376 | } |
2377 | ||
55ed8ca1 JH |
2378 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2379 | { | |
2380 | struct link_key *key; | |
2381 | ||
2382 | key = hci_find_link_key(hdev, bdaddr); | |
2383 | if (!key) | |
2384 | return -ENOENT; | |
2385 | ||
6ed93dc6 | 2386 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2387 | |
0378b597 JH |
2388 | list_del_rcu(&key->list); |
2389 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2390 | |
2391 | return 0; | |
2392 | } | |
2393 | ||
e0b2b27e | 2394 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2395 | { |
970d0f1b | 2396 | struct smp_ltk *k; |
c51ffa0b | 2397 | int removed = 0; |
b899efaf | 2398 | |
970d0f1b | 2399 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2400 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2401 | continue; |
2402 | ||
6ed93dc6 | 2403 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2404 | |
970d0f1b JH |
2405 | list_del_rcu(&k->list); |
2406 | kfree_rcu(k, rcu); | |
c51ffa0b | 2407 | removed++; |
b899efaf VCG |
2408 | } |
2409 | ||
c51ffa0b | 2410 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2411 | } |
2412 | ||
a7ec7338 JH |
2413 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2414 | { | |
adae20cb | 2415 | struct smp_irk *k; |
a7ec7338 | 2416 | |
adae20cb | 2417 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2418 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2419 | continue; | |
2420 | ||
2421 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2422 | ||
adae20cb JH |
2423 | list_del_rcu(&k->list); |
2424 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2425 | } |
2426 | } | |
2427 | ||
55e76b38 JH |
2428 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2429 | { | |
2430 | struct smp_ltk *k; | |
4ba9faf3 | 2431 | struct smp_irk *irk; |
55e76b38 JH |
2432 | u8 addr_type; |
2433 | ||
2434 | if (type == BDADDR_BREDR) { | |
2435 | if (hci_find_link_key(hdev, bdaddr)) | |
2436 | return true; | |
2437 | return false; | |
2438 | } | |
2439 | ||
2440 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2441 | if (type == BDADDR_LE_PUBLIC) | |
2442 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2443 | else | |
2444 | addr_type = ADDR_LE_DEV_RANDOM; | |
2445 | ||
4ba9faf3 JH |
2446 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2447 | if (irk) { | |
2448 | bdaddr = &irk->bdaddr; | |
2449 | addr_type = irk->addr_type; | |
2450 | } | |
2451 | ||
55e76b38 JH |
2452 | rcu_read_lock(); |
2453 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2454 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2455 | rcu_read_unlock(); | |
55e76b38 | 2456 | return true; |
87c8b28d | 2457 | } |
55e76b38 JH |
2458 | } |
2459 | rcu_read_unlock(); | |
2460 | ||
2461 | return false; | |
2462 | } | |
2463 | ||
6bd32326 | 2464 | /* HCI command timer function */ |
65cc2b49 | 2465 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2466 | { |
65cc2b49 MH |
2467 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2468 | cmd_timer.work); | |
6bd32326 | 2469 | |
bda4f23a AE |
2470 | if (hdev->sent_cmd) { |
2471 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2472 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2473 | ||
2474 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2475 | } else { | |
2476 | BT_ERR("%s command tx timeout", hdev->name); | |
2477 | } | |
2478 | ||
6bd32326 | 2479 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2480 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2481 | } |
2482 | ||
2763eda6 | 2483 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2484 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2485 | { |
2486 | struct oob_data *data; | |
2487 | ||
6928a924 JH |
2488 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2489 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2490 | continue; | |
2491 | if (data->bdaddr_type != bdaddr_type) | |
2492 | continue; | |
2493 | return data; | |
2494 | } | |
2763eda6 SJ |
2495 | |
2496 | return NULL; | |
2497 | } | |
2498 | ||
6928a924 JH |
2499 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2500 | u8 bdaddr_type) | |
2763eda6 SJ |
2501 | { |
2502 | struct oob_data *data; | |
2503 | ||
6928a924 | 2504 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2505 | if (!data) |
2506 | return -ENOENT; | |
2507 | ||
6928a924 | 2508 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2509 | |
2510 | list_del(&data->list); | |
2511 | kfree(data); | |
2512 | ||
2513 | return 0; | |
2514 | } | |
2515 | ||
35f7498a | 2516 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2517 | { |
2518 | struct oob_data *data, *n; | |
2519 | ||
2520 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2521 | list_del(&data->list); | |
2522 | kfree(data); | |
2523 | } | |
2763eda6 SJ |
2524 | } |
2525 | ||
0798872e | 2526 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2527 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2528 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2529 | { |
2530 | struct oob_data *data; | |
2531 | ||
6928a924 | 2532 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2533 | if (!data) { |
0a14ab41 | 2534 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2535 | if (!data) |
2536 | return -ENOMEM; | |
2537 | ||
2538 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2539 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2540 | list_add(&data->list, &hdev->remote_oob_data); |
2541 | } | |
2542 | ||
81328d5c JH |
2543 | if (hash192 && rand192) { |
2544 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2545 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2546 | if (hash256 && rand256) |
2547 | data->present = 0x03; | |
81328d5c JH |
2548 | } else { |
2549 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2550 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2551 | if (hash256 && rand256) |
2552 | data->present = 0x02; | |
2553 | else | |
2554 | data->present = 0x00; | |
0798872e MH |
2555 | } |
2556 | ||
81328d5c JH |
2557 | if (hash256 && rand256) { |
2558 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2559 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2560 | } else { | |
2561 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2562 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2563 | if (hash192 && rand192) |
2564 | data->present = 0x01; | |
81328d5c | 2565 | } |
0798872e | 2566 | |
6ed93dc6 | 2567 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2568 | |
2569 | return 0; | |
2570 | } | |
2571 | ||
d2609b34 FG |
2572 | /* This function requires the caller holds hdev->lock */ |
2573 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2574 | { | |
2575 | struct adv_info *adv_instance; | |
2576 | ||
2577 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2578 | if (adv_instance->instance == instance) | |
2579 | return adv_instance; | |
2580 | } | |
2581 | ||
2582 | return NULL; | |
2583 | } | |
2584 | ||
2585 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
2586 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
2587 | { | |
d2609b34 FG |
2588 | struct adv_info *cur_instance; |
2589 | ||
2590 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2591 | if (!cur_instance) | |
2592 | return NULL; | |
2593 | ||
2594 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2595 | struct adv_info, list)) | |
2596 | return list_first_entry(&hdev->adv_instances, | |
2597 | struct adv_info, list); | |
2598 | else | |
2599 | return list_next_entry(cur_instance, list); | |
2600 | } | |
2601 | ||
2602 | /* This function requires the caller holds hdev->lock */ | |
2603 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2604 | { | |
2605 | struct adv_info *adv_instance; | |
2606 | ||
2607 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2608 | if (!adv_instance) | |
2609 | return -ENOENT; | |
2610 | ||
2611 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2612 | ||
cab054ab JH |
2613 | if (hdev->cur_adv_instance == instance) { |
2614 | if (hdev->adv_instance_timeout) { | |
2615 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2616 | hdev->adv_instance_timeout = 0; | |
2617 | } | |
2618 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
2619 | } |
2620 | ||
d2609b34 FG |
2621 | list_del(&adv_instance->list); |
2622 | kfree(adv_instance); | |
2623 | ||
2624 | hdev->adv_instance_cnt--; | |
2625 | ||
2626 | return 0; | |
2627 | } | |
2628 | ||
2629 | /* This function requires the caller holds hdev->lock */ | |
2630 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2631 | { | |
2632 | struct adv_info *adv_instance, *n; | |
2633 | ||
5d900e46 FG |
2634 | if (hdev->adv_instance_timeout) { |
2635 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2636 | hdev->adv_instance_timeout = 0; | |
2637 | } | |
2638 | ||
d2609b34 FG |
2639 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2640 | list_del(&adv_instance->list); | |
2641 | kfree(adv_instance); | |
2642 | } | |
2643 | ||
2644 | hdev->adv_instance_cnt = 0; | |
cab054ab | 2645 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
2646 | } |
2647 | ||
2648 | /* This function requires the caller holds hdev->lock */ | |
2649 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2650 | u16 adv_data_len, u8 *adv_data, | |
2651 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2652 | u16 timeout, u16 duration) | |
2653 | { | |
2654 | struct adv_info *adv_instance; | |
2655 | ||
2656 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2657 | if (adv_instance) { | |
2658 | memset(adv_instance->adv_data, 0, | |
2659 | sizeof(adv_instance->adv_data)); | |
2660 | memset(adv_instance->scan_rsp_data, 0, | |
2661 | sizeof(adv_instance->scan_rsp_data)); | |
2662 | } else { | |
2663 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2664 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2665 | return -EOVERFLOW; | |
2666 | ||
39ecfad6 | 2667 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2668 | if (!adv_instance) |
2669 | return -ENOMEM; | |
2670 | ||
fffd38bc | 2671 | adv_instance->pending = true; |
d2609b34 FG |
2672 | adv_instance->instance = instance; |
2673 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2674 | hdev->adv_instance_cnt++; | |
2675 | } | |
2676 | ||
2677 | adv_instance->flags = flags; | |
2678 | adv_instance->adv_data_len = adv_data_len; | |
2679 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2680 | ||
2681 | if (adv_data_len) | |
2682 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2683 | ||
2684 | if (scan_rsp_len) | |
2685 | memcpy(adv_instance->scan_rsp_data, | |
2686 | scan_rsp_data, scan_rsp_len); | |
2687 | ||
2688 | adv_instance->timeout = timeout; | |
5d900e46 | 2689 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2690 | |
2691 | if (duration == 0) | |
2692 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2693 | else | |
2694 | adv_instance->duration = duration; | |
2695 | ||
2696 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2697 | ||
2698 | return 0; | |
2699 | } | |
2700 | ||
dcc36c16 | 2701 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2702 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2703 | { |
8035ded4 | 2704 | struct bdaddr_list *b; |
b2a66aad | 2705 | |
dcc36c16 | 2706 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2707 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2708 | return b; |
b9ee0a78 | 2709 | } |
b2a66aad AJ |
2710 | |
2711 | return NULL; | |
2712 | } | |
2713 | ||
dcc36c16 | 2714 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2715 | { |
7eb7404f | 2716 | struct bdaddr_list *b, *n; |
b2a66aad | 2717 | |
7eb7404f GT |
2718 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2719 | list_del(&b->list); | |
b2a66aad AJ |
2720 | kfree(b); |
2721 | } | |
b2a66aad AJ |
2722 | } |
2723 | ||
dcc36c16 | 2724 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2725 | { |
2726 | struct bdaddr_list *entry; | |
b2a66aad | 2727 | |
b9ee0a78 | 2728 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2729 | return -EBADF; |
2730 | ||
dcc36c16 | 2731 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2732 | return -EEXIST; |
b2a66aad | 2733 | |
27f70f3e | 2734 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2735 | if (!entry) |
2736 | return -ENOMEM; | |
b2a66aad AJ |
2737 | |
2738 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2739 | entry->bdaddr_type = type; |
b2a66aad | 2740 | |
dcc36c16 | 2741 | list_add(&entry->list, list); |
b2a66aad | 2742 | |
2a8357f2 | 2743 | return 0; |
b2a66aad AJ |
2744 | } |
2745 | ||
dcc36c16 | 2746 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2747 | { |
2748 | struct bdaddr_list *entry; | |
b2a66aad | 2749 | |
35f7498a | 2750 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2751 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2752 | return 0; |
2753 | } | |
b2a66aad | 2754 | |
dcc36c16 | 2755 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2756 | if (!entry) |
2757 | return -ENOENT; | |
2758 | ||
2759 | list_del(&entry->list); | |
2760 | kfree(entry); | |
2761 | ||
2762 | return 0; | |
2763 | } | |
2764 | ||
15819a70 AG |
2765 | /* This function requires the caller holds hdev->lock */ |
2766 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2767 | bdaddr_t *addr, u8 addr_type) | |
2768 | { | |
2769 | struct hci_conn_params *params; | |
2770 | ||
2771 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2772 | if (bacmp(¶ms->addr, addr) == 0 && | |
2773 | params->addr_type == addr_type) { | |
2774 | return params; | |
2775 | } | |
2776 | } | |
2777 | ||
2778 | return NULL; | |
2779 | } | |
2780 | ||
4b10966f | 2781 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2782 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2783 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2784 | { |
912b42ef | 2785 | struct hci_conn_params *param; |
a9b0a04c | 2786 | |
501f8827 | 2787 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2788 | if (bacmp(¶m->addr, addr) == 0 && |
2789 | param->addr_type == addr_type) | |
2790 | return param; | |
4b10966f MH |
2791 | } |
2792 | ||
2793 | return NULL; | |
a9b0a04c AG |
2794 | } |
2795 | ||
15819a70 | 2796 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2797 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2798 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2799 | { |
2800 | struct hci_conn_params *params; | |
2801 | ||
2802 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2803 | if (params) |
51d167c0 | 2804 | return params; |
15819a70 AG |
2805 | |
2806 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2807 | if (!params) { | |
2808 | BT_ERR("Out of memory"); | |
51d167c0 | 2809 | return NULL; |
15819a70 AG |
2810 | } |
2811 | ||
2812 | bacpy(¶ms->addr, addr); | |
2813 | params->addr_type = addr_type; | |
cef952ce AG |
2814 | |
2815 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2816 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2817 | |
bf5b3c8b MH |
2818 | params->conn_min_interval = hdev->le_conn_min_interval; |
2819 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2820 | params->conn_latency = hdev->le_conn_latency; | |
2821 | params->supervision_timeout = hdev->le_supv_timeout; | |
2822 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2823 | ||
2824 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2825 | ||
51d167c0 | 2826 | return params; |
bf5b3c8b MH |
2827 | } |
2828 | ||
f6c63249 | 2829 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2830 | { |
f8aaf9b6 | 2831 | if (params->conn) { |
f161dd41 | 2832 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2833 | hci_conn_put(params->conn); |
2834 | } | |
f161dd41 | 2835 | |
95305baa | 2836 | list_del(¶ms->action); |
15819a70 AG |
2837 | list_del(¶ms->list); |
2838 | kfree(params); | |
f6c63249 JH |
2839 | } |
2840 | ||
2841 | /* This function requires the caller holds hdev->lock */ | |
2842 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2843 | { | |
2844 | struct hci_conn_params *params; | |
2845 | ||
2846 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2847 | if (!params) | |
2848 | return; | |
2849 | ||
2850 | hci_conn_params_free(params); | |
15819a70 | 2851 | |
95305baa JH |
2852 | hci_update_background_scan(hdev); |
2853 | ||
15819a70 AG |
2854 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2855 | } | |
2856 | ||
2857 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2858 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2859 | { |
2860 | struct hci_conn_params *params, *tmp; | |
2861 | ||
2862 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2863 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2864 | continue; | |
f75113a2 JP |
2865 | |
2866 | /* If trying to estabilish one time connection to disabled | |
2867 | * device, leave the params, but mark them as just once. | |
2868 | */ | |
2869 | if (params->explicit_connect) { | |
2870 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2871 | continue; | |
2872 | } | |
2873 | ||
15819a70 AG |
2874 | list_del(¶ms->list); |
2875 | kfree(params); | |
2876 | } | |
2877 | ||
55af49a8 | 2878 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2879 | } |
2880 | ||
2881 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2882 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2883 | { |
15819a70 | 2884 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2885 | |
f6c63249 JH |
2886 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2887 | hci_conn_params_free(params); | |
77a77a30 | 2888 | |
15819a70 | 2889 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2890 | } |
2891 | ||
a1f4c318 JH |
2892 | /* Copy the Identity Address of the controller. |
2893 | * | |
2894 | * If the controller has a public BD_ADDR, then by default use that one. | |
2895 | * If this is a LE only controller without a public address, default to | |
2896 | * the static random address. | |
2897 | * | |
2898 | * For debugging purposes it is possible to force controllers with a | |
2899 | * public address to use the static random address instead. | |
50b5b952 MH |
2900 | * |
2901 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2902 | * userspace has configured a static address, then that address | |
2903 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2904 | */ |
2905 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2906 | u8 *bdaddr_type) | |
2907 | { | |
b7cb93e5 | 2908 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2909 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2910 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2911 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2912 | bacpy(bdaddr, &hdev->static_addr); |
2913 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2914 | } else { | |
2915 | bacpy(bdaddr, &hdev->bdaddr); | |
2916 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2917 | } | |
2918 | } | |
2919 | ||
9be0dab7 DH |
2920 | /* Alloc HCI device */ |
2921 | struct hci_dev *hci_alloc_dev(void) | |
2922 | { | |
2923 | struct hci_dev *hdev; | |
2924 | ||
27f70f3e | 2925 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
2926 | if (!hdev) |
2927 | return NULL; | |
2928 | ||
b1b813d4 DH |
2929 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2930 | hdev->esco_type = (ESCO_HV1); | |
2931 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2932 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2933 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2934 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2935 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2936 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2937 | hdev->adv_instance_cnt = 0; |
2938 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2939 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2940 | |
b1b813d4 DH |
2941 | hdev->sniff_max_interval = 800; |
2942 | hdev->sniff_min_interval = 80; | |
2943 | ||
3f959d46 | 2944 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2945 | hdev->le_adv_min_interval = 0x0800; |
2946 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2947 | hdev->le_scan_interval = 0x0060; |
2948 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
2949 | hdev->le_conn_min_interval = 0x0028; |
2950 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
2951 | hdev->le_conn_latency = 0x0000; |
2952 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2953 | hdev->le_def_tx_len = 0x001b; |
2954 | hdev->le_def_tx_time = 0x0148; | |
2955 | hdev->le_max_tx_len = 0x001b; | |
2956 | hdev->le_max_tx_time = 0x0148; | |
2957 | hdev->le_max_rx_len = 0x001b; | |
2958 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 2959 | |
d6bfd59c | 2960 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2961 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2962 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2963 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 2964 | |
b1b813d4 DH |
2965 | mutex_init(&hdev->lock); |
2966 | mutex_init(&hdev->req_lock); | |
2967 | ||
2968 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2969 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 2970 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
2971 | INIT_LIST_HEAD(&hdev->uuids); |
2972 | INIT_LIST_HEAD(&hdev->link_keys); | |
2973 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2974 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2975 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 2976 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 2977 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2978 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2979 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2980 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 2981 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
2982 | |
2983 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2984 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2985 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2986 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2987 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2988 | |
b1b813d4 | 2989 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 2990 | |
b1b813d4 DH |
2991 | skb_queue_head_init(&hdev->rx_q); |
2992 | skb_queue_head_init(&hdev->cmd_q); | |
2993 | skb_queue_head_init(&hdev->raw_q); | |
2994 | ||
2995 | init_waitqueue_head(&hdev->req_wait_q); | |
2996 | ||
65cc2b49 | 2997 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 2998 | |
5fc16cc4 JH |
2999 | hci_request_setup(hdev); |
3000 | ||
b1b813d4 DH |
3001 | hci_init_sysfs(hdev); |
3002 | discovery_init(hdev); | |
9be0dab7 DH |
3003 | |
3004 | return hdev; | |
3005 | } | |
3006 | EXPORT_SYMBOL(hci_alloc_dev); | |
3007 | ||
3008 | /* Free HCI device */ | |
3009 | void hci_free_dev(struct hci_dev *hdev) | |
3010 | { | |
9be0dab7 DH |
3011 | /* will free via device release */ |
3012 | put_device(&hdev->dev); | |
3013 | } | |
3014 | EXPORT_SYMBOL(hci_free_dev); | |
3015 | ||
1da177e4 LT |
3016 | /* Register HCI device */ |
3017 | int hci_register_dev(struct hci_dev *hdev) | |
3018 | { | |
b1b813d4 | 3019 | int id, error; |
1da177e4 | 3020 | |
74292d5a | 3021 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3022 | return -EINVAL; |
3023 | ||
08add513 MM |
3024 | /* Do not allow HCI_AMP devices to register at index 0, |
3025 | * so the index can be used as the AMP controller ID. | |
3026 | */ | |
3df92b31 SL |
3027 | switch (hdev->dev_type) { |
3028 | case HCI_BREDR: | |
3029 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3030 | break; | |
3031 | case HCI_AMP: | |
3032 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3033 | break; | |
3034 | default: | |
3035 | return -EINVAL; | |
1da177e4 | 3036 | } |
8e87d142 | 3037 | |
3df92b31 SL |
3038 | if (id < 0) |
3039 | return id; | |
3040 | ||
1da177e4 LT |
3041 | sprintf(hdev->name, "hci%d", id); |
3042 | hdev->id = id; | |
2d8b3a11 AE |
3043 | |
3044 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3045 | ||
d8537548 KC |
3046 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3047 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3048 | if (!hdev->workqueue) { |
3049 | error = -ENOMEM; | |
3050 | goto err; | |
3051 | } | |
f48fd9c8 | 3052 | |
d8537548 KC |
3053 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3054 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3055 | if (!hdev->req_workqueue) { |
3056 | destroy_workqueue(hdev->workqueue); | |
3057 | error = -ENOMEM; | |
3058 | goto err; | |
3059 | } | |
3060 | ||
0153e2ec MH |
3061 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3062 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3063 | ||
bdc3e0f1 MH |
3064 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3065 | ||
3066 | error = device_add(&hdev->dev); | |
33ca954d | 3067 | if (error < 0) |
54506918 | 3068 | goto err_wqueue; |
1da177e4 | 3069 | |
611b30f7 | 3070 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3071 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3072 | hdev); | |
611b30f7 MH |
3073 | if (hdev->rfkill) { |
3074 | if (rfkill_register(hdev->rfkill) < 0) { | |
3075 | rfkill_destroy(hdev->rfkill); | |
3076 | hdev->rfkill = NULL; | |
3077 | } | |
3078 | } | |
3079 | ||
5e130367 | 3080 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3081 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3082 | |
a1536da2 MH |
3083 | hci_dev_set_flag(hdev, HCI_SETUP); |
3084 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3085 | |
01cd3404 | 3086 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3087 | /* Assume BR/EDR support until proven otherwise (such as |
3088 | * through reading supported features during init. | |
3089 | */ | |
a1536da2 | 3090 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3091 | } |
ce2be9ac | 3092 | |
fcee3377 GP |
3093 | write_lock(&hci_dev_list_lock); |
3094 | list_add(&hdev->list, &hci_dev_list); | |
3095 | write_unlock(&hci_dev_list_lock); | |
3096 | ||
4a964404 MH |
3097 | /* Devices that are marked for raw-only usage are unconfigured |
3098 | * and should not be included in normal operation. | |
fee746b0 MH |
3099 | */ |
3100 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3101 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3102 | |
05fcd4c4 | 3103 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3104 | hci_dev_hold(hdev); |
1da177e4 | 3105 | |
19202573 | 3106 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3107 | |
1da177e4 | 3108 | return id; |
f48fd9c8 | 3109 | |
33ca954d DH |
3110 | err_wqueue: |
3111 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3112 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3113 | err: |
3df92b31 | 3114 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3115 | |
33ca954d | 3116 | return error; |
1da177e4 LT |
3117 | } |
3118 | EXPORT_SYMBOL(hci_register_dev); | |
3119 | ||
3120 | /* Unregister HCI device */ | |
59735631 | 3121 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3122 | { |
2d7cc19e | 3123 | int id; |
ef222013 | 3124 | |
c13854ce | 3125 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3126 | |
a1536da2 | 3127 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3128 | |
3df92b31 SL |
3129 | id = hdev->id; |
3130 | ||
f20d09d5 | 3131 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3132 | list_del(&hdev->list); |
f20d09d5 | 3133 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3134 | |
3135 | hci_dev_do_close(hdev); | |
3136 | ||
b9b5ef18 GP |
3137 | cancel_work_sync(&hdev->power_on); |
3138 | ||
ab81cbf9 | 3139 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3140 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3141 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3142 | hci_dev_lock(hdev); |
744cf19e | 3143 | mgmt_index_removed(hdev); |
09fd0de5 | 3144 | hci_dev_unlock(hdev); |
56e5cb86 | 3145 | } |
ab81cbf9 | 3146 | |
2e58ef3e JH |
3147 | /* mgmt_index_removed should take care of emptying the |
3148 | * pending list */ | |
3149 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3150 | ||
05fcd4c4 | 3151 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3152 | |
611b30f7 MH |
3153 | if (hdev->rfkill) { |
3154 | rfkill_unregister(hdev->rfkill); | |
3155 | rfkill_destroy(hdev->rfkill); | |
3156 | } | |
3157 | ||
bdc3e0f1 | 3158 | device_del(&hdev->dev); |
147e2d59 | 3159 | |
0153e2ec MH |
3160 | debugfs_remove_recursive(hdev->debugfs); |
3161 | ||
f48fd9c8 | 3162 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3163 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3164 | |
09fd0de5 | 3165 | hci_dev_lock(hdev); |
dcc36c16 | 3166 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3167 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3168 | hci_uuids_clear(hdev); |
55ed8ca1 | 3169 | hci_link_keys_clear(hdev); |
b899efaf | 3170 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3171 | hci_smp_irks_clear(hdev); |
2763eda6 | 3172 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3173 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3174 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3175 | hci_conn_params_clear_all(hdev); |
22078800 | 3176 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3177 | hci_dev_unlock(hdev); |
e2e0cacb | 3178 | |
dc946bd8 | 3179 | hci_dev_put(hdev); |
3df92b31 SL |
3180 | |
3181 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3182 | } |
3183 | EXPORT_SYMBOL(hci_unregister_dev); | |
3184 | ||
3185 | /* Suspend HCI device */ | |
3186 | int hci_suspend_dev(struct hci_dev *hdev) | |
3187 | { | |
05fcd4c4 | 3188 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3189 | return 0; |
3190 | } | |
3191 | EXPORT_SYMBOL(hci_suspend_dev); | |
3192 | ||
3193 | /* Resume HCI device */ | |
3194 | int hci_resume_dev(struct hci_dev *hdev) | |
3195 | { | |
05fcd4c4 | 3196 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3197 | return 0; |
3198 | } | |
3199 | EXPORT_SYMBOL(hci_resume_dev); | |
3200 | ||
75e0569f MH |
3201 | /* Reset HCI device */ |
3202 | int hci_reset_dev(struct hci_dev *hdev) | |
3203 | { | |
3204 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3205 | struct sk_buff *skb; | |
3206 | ||
3207 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3208 | if (!skb) | |
3209 | return -ENOMEM; | |
3210 | ||
d79f34e3 | 3211 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
75e0569f MH |
3212 | memcpy(skb_put(skb, 3), hw_err, 3); |
3213 | ||
3214 | /* Send Hardware Error to upper stack */ | |
3215 | return hci_recv_frame(hdev, skb); | |
3216 | } | |
3217 | EXPORT_SYMBOL(hci_reset_dev); | |
3218 | ||
76bca880 | 3219 | /* Receive frame from HCI drivers */ |
e1a26170 | 3220 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3221 | { |
76bca880 | 3222 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3223 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3224 | kfree_skb(skb); |
3225 | return -ENXIO; | |
3226 | } | |
3227 | ||
d79f34e3 MH |
3228 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
3229 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
3230 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
fe806dce MH |
3231 | kfree_skb(skb); |
3232 | return -EINVAL; | |
3233 | } | |
3234 | ||
d82603c6 | 3235 | /* Incoming skb */ |
76bca880 MH |
3236 | bt_cb(skb)->incoming = 1; |
3237 | ||
3238 | /* Time stamp */ | |
3239 | __net_timestamp(skb); | |
3240 | ||
76bca880 | 3241 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3242 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3243 | |
76bca880 MH |
3244 | return 0; |
3245 | } | |
3246 | EXPORT_SYMBOL(hci_recv_frame); | |
3247 | ||
e875ff84 MH |
3248 | /* Receive diagnostic message from HCI drivers */ |
3249 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3250 | { | |
581d6fd6 | 3251 | /* Mark as diagnostic packet */ |
d79f34e3 | 3252 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3253 | |
e875ff84 MH |
3254 | /* Time stamp */ |
3255 | __net_timestamp(skb); | |
3256 | ||
581d6fd6 MH |
3257 | skb_queue_tail(&hdev->rx_q, skb); |
3258 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3259 | |
e875ff84 MH |
3260 | return 0; |
3261 | } | |
3262 | EXPORT_SYMBOL(hci_recv_diag); | |
3263 | ||
1da177e4 LT |
3264 | /* ---- Interface to upper protocols ---- */ |
3265 | ||
1da177e4 LT |
3266 | int hci_register_cb(struct hci_cb *cb) |
3267 | { | |
3268 | BT_DBG("%p name %s", cb, cb->name); | |
3269 | ||
fba7ecf0 | 3270 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3271 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3272 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3273 | |
3274 | return 0; | |
3275 | } | |
3276 | EXPORT_SYMBOL(hci_register_cb); | |
3277 | ||
3278 | int hci_unregister_cb(struct hci_cb *cb) | |
3279 | { | |
3280 | BT_DBG("%p name %s", cb, cb->name); | |
3281 | ||
fba7ecf0 | 3282 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3283 | list_del(&cb->list); |
fba7ecf0 | 3284 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3285 | |
3286 | return 0; | |
3287 | } | |
3288 | EXPORT_SYMBOL(hci_unregister_cb); | |
3289 | ||
51086991 | 3290 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3291 | { |
cdc52faa MH |
3292 | int err; |
3293 | ||
d79f34e3 MH |
3294 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3295 | skb->len); | |
1da177e4 | 3296 | |
cd82e61c MH |
3297 | /* Time stamp */ |
3298 | __net_timestamp(skb); | |
1da177e4 | 3299 | |
cd82e61c MH |
3300 | /* Send copy to monitor */ |
3301 | hci_send_to_monitor(hdev, skb); | |
3302 | ||
3303 | if (atomic_read(&hdev->promisc)) { | |
3304 | /* Send copy to the sockets */ | |
470fe1b5 | 3305 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3306 | } |
3307 | ||
3308 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3309 | skb_orphan(skb); | |
3310 | ||
73d0d3c8 MH |
3311 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3312 | kfree_skb(skb); | |
3313 | return; | |
3314 | } | |
3315 | ||
cdc52faa MH |
3316 | err = hdev->send(hdev, skb); |
3317 | if (err < 0) { | |
3318 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3319 | kfree_skb(skb); | |
3320 | } | |
1da177e4 LT |
3321 | } |
3322 | ||
1ca3a9d0 | 3323 | /* Send HCI command */ |
07dc93dd JH |
3324 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3325 | const void *param) | |
1ca3a9d0 JH |
3326 | { |
3327 | struct sk_buff *skb; | |
3328 | ||
3329 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3330 | ||
3331 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3332 | if (!skb) { | |
3333 | BT_ERR("%s no memory for command", hdev->name); | |
3334 | return -ENOMEM; | |
3335 | } | |
3336 | ||
49c922bb | 3337 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3338 | * single-command requests. |
3339 | */ | |
44d27137 | 3340 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3341 | |
1da177e4 | 3342 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3343 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3344 | |
3345 | return 0; | |
3346 | } | |
1da177e4 LT |
3347 | |
3348 | /* Get data from the previously sent command */ | |
a9de9248 | 3349 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3350 | { |
3351 | struct hci_command_hdr *hdr; | |
3352 | ||
3353 | if (!hdev->sent_cmd) | |
3354 | return NULL; | |
3355 | ||
3356 | hdr = (void *) hdev->sent_cmd->data; | |
3357 | ||
a9de9248 | 3358 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3359 | return NULL; |
3360 | ||
f0e09510 | 3361 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3362 | |
3363 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3364 | } | |
3365 | ||
fbef168f LP |
3366 | /* Send HCI command and wait for command commplete event */ |
3367 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3368 | const void *param, u32 timeout) | |
3369 | { | |
3370 | struct sk_buff *skb; | |
3371 | ||
3372 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3373 | return ERR_PTR(-ENETDOWN); | |
3374 | ||
3375 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3376 | ||
b504430c | 3377 | hci_req_sync_lock(hdev); |
fbef168f | 3378 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
b504430c | 3379 | hci_req_sync_unlock(hdev); |
fbef168f LP |
3380 | |
3381 | return skb; | |
3382 | } | |
3383 | EXPORT_SYMBOL(hci_cmd_sync); | |
3384 | ||
1da177e4 LT |
3385 | /* Send ACL data */ |
3386 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3387 | { | |
3388 | struct hci_acl_hdr *hdr; | |
3389 | int len = skb->len; | |
3390 | ||
badff6d0 ACM |
3391 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3392 | skb_reset_transport_header(skb); | |
9c70220b | 3393 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3394 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3395 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3396 | } |
3397 | ||
ee22be7e | 3398 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3399 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3400 | { |
ee22be7e | 3401 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3402 | struct hci_dev *hdev = conn->hdev; |
3403 | struct sk_buff *list; | |
3404 | ||
087bfd99 GP |
3405 | skb->len = skb_headlen(skb); |
3406 | skb->data_len = 0; | |
3407 | ||
d79f34e3 | 3408 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3409 | |
3410 | switch (hdev->dev_type) { | |
3411 | case HCI_BREDR: | |
3412 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3413 | break; | |
3414 | case HCI_AMP: | |
3415 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3416 | break; | |
3417 | default: | |
3418 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3419 | return; | |
3420 | } | |
087bfd99 | 3421 | |
70f23020 AE |
3422 | list = skb_shinfo(skb)->frag_list; |
3423 | if (!list) { | |
1da177e4 LT |
3424 | /* Non fragmented */ |
3425 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3426 | ||
73d80deb | 3427 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3428 | } else { |
3429 | /* Fragmented */ | |
3430 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3431 | ||
3432 | skb_shinfo(skb)->frag_list = NULL; | |
3433 | ||
9cfd5a23 JR |
3434 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3435 | * here because of 6LoWPAN links, as there this function is | |
3436 | * called from softirq and using normal spin lock could cause | |
3437 | * deadlocks. | |
3438 | */ | |
3439 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3440 | |
73d80deb | 3441 | __skb_queue_tail(queue, skb); |
e702112f AE |
3442 | |
3443 | flags &= ~ACL_START; | |
3444 | flags |= ACL_CONT; | |
1da177e4 LT |
3445 | do { |
3446 | skb = list; list = list->next; | |
8e87d142 | 3447 | |
d79f34e3 | 3448 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3449 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3450 | |
3451 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3452 | ||
73d80deb | 3453 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3454 | } while (list); |
3455 | ||
9cfd5a23 | 3456 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3457 | } |
73d80deb LAD |
3458 | } |
3459 | ||
3460 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3461 | { | |
ee22be7e | 3462 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3463 | |
f0e09510 | 3464 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3465 | |
ee22be7e | 3466 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3467 | |
3eff45ea | 3468 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3469 | } |
1da177e4 LT |
3470 | |
3471 | /* Send SCO data */ | |
0d861d8b | 3472 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3473 | { |
3474 | struct hci_dev *hdev = conn->hdev; | |
3475 | struct hci_sco_hdr hdr; | |
3476 | ||
3477 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3478 | ||
aca3192c | 3479 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3480 | hdr.dlen = skb->len; |
3481 | ||
badff6d0 ACM |
3482 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3483 | skb_reset_transport_header(skb); | |
9c70220b | 3484 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3485 | |
d79f34e3 | 3486 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3487 | |
1da177e4 | 3488 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3489 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3490 | } |
1da177e4 LT |
3491 | |
3492 | /* ---- HCI TX task (outgoing data) ---- */ | |
3493 | ||
3494 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3495 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3496 | int *quote) | |
1da177e4 LT |
3497 | { |
3498 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3499 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3500 | unsigned int num = 0, min = ~0; |
1da177e4 | 3501 | |
8e87d142 | 3502 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3503 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3504 | |
3505 | rcu_read_lock(); | |
3506 | ||
3507 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3508 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3509 | continue; |
769be974 MH |
3510 | |
3511 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3512 | continue; | |
3513 | ||
1da177e4 LT |
3514 | num++; |
3515 | ||
3516 | if (c->sent < min) { | |
3517 | min = c->sent; | |
3518 | conn = c; | |
3519 | } | |
52087a79 LAD |
3520 | |
3521 | if (hci_conn_num(hdev, type) == num) | |
3522 | break; | |
1da177e4 LT |
3523 | } |
3524 | ||
bf4c6325 GP |
3525 | rcu_read_unlock(); |
3526 | ||
1da177e4 | 3527 | if (conn) { |
6ed58ec5 VT |
3528 | int cnt, q; |
3529 | ||
3530 | switch (conn->type) { | |
3531 | case ACL_LINK: | |
3532 | cnt = hdev->acl_cnt; | |
3533 | break; | |
3534 | case SCO_LINK: | |
3535 | case ESCO_LINK: | |
3536 | cnt = hdev->sco_cnt; | |
3537 | break; | |
3538 | case LE_LINK: | |
3539 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3540 | break; | |
3541 | default: | |
3542 | cnt = 0; | |
3543 | BT_ERR("Unknown link type"); | |
3544 | } | |
3545 | ||
3546 | q = cnt / num; | |
1da177e4 LT |
3547 | *quote = q ? q : 1; |
3548 | } else | |
3549 | *quote = 0; | |
3550 | ||
3551 | BT_DBG("conn %p quote %d", conn, *quote); | |
3552 | return conn; | |
3553 | } | |
3554 | ||
6039aa73 | 3555 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3556 | { |
3557 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3558 | struct hci_conn *c; |
1da177e4 | 3559 | |
bae1f5d9 | 3560 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3561 | |
bf4c6325 GP |
3562 | rcu_read_lock(); |
3563 | ||
1da177e4 | 3564 | /* Kill stalled connections */ |
bf4c6325 | 3565 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3566 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3567 | BT_ERR("%s killing stalled connection %pMR", |
3568 | hdev->name, &c->dst); | |
bed71748 | 3569 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3570 | } |
3571 | } | |
bf4c6325 GP |
3572 | |
3573 | rcu_read_unlock(); | |
1da177e4 LT |
3574 | } |
3575 | ||
6039aa73 GP |
3576 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3577 | int *quote) | |
1da177e4 | 3578 | { |
73d80deb LAD |
3579 | struct hci_conn_hash *h = &hdev->conn_hash; |
3580 | struct hci_chan *chan = NULL; | |
abc5de8f | 3581 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3582 | struct hci_conn *conn; |
73d80deb LAD |
3583 | int cnt, q, conn_num = 0; |
3584 | ||
3585 | BT_DBG("%s", hdev->name); | |
3586 | ||
bf4c6325 GP |
3587 | rcu_read_lock(); |
3588 | ||
3589 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3590 | struct hci_chan *tmp; |
3591 | ||
3592 | if (conn->type != type) | |
3593 | continue; | |
3594 | ||
3595 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3596 | continue; | |
3597 | ||
3598 | conn_num++; | |
3599 | ||
8192edef | 3600 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3601 | struct sk_buff *skb; |
3602 | ||
3603 | if (skb_queue_empty(&tmp->data_q)) | |
3604 | continue; | |
3605 | ||
3606 | skb = skb_peek(&tmp->data_q); | |
3607 | if (skb->priority < cur_prio) | |
3608 | continue; | |
3609 | ||
3610 | if (skb->priority > cur_prio) { | |
3611 | num = 0; | |
3612 | min = ~0; | |
3613 | cur_prio = skb->priority; | |
3614 | } | |
3615 | ||
3616 | num++; | |
3617 | ||
3618 | if (conn->sent < min) { | |
3619 | min = conn->sent; | |
3620 | chan = tmp; | |
3621 | } | |
3622 | } | |
3623 | ||
3624 | if (hci_conn_num(hdev, type) == conn_num) | |
3625 | break; | |
3626 | } | |
3627 | ||
bf4c6325 GP |
3628 | rcu_read_unlock(); |
3629 | ||
73d80deb LAD |
3630 | if (!chan) |
3631 | return NULL; | |
3632 | ||
3633 | switch (chan->conn->type) { | |
3634 | case ACL_LINK: | |
3635 | cnt = hdev->acl_cnt; | |
3636 | break; | |
bd1eb66b AE |
3637 | case AMP_LINK: |
3638 | cnt = hdev->block_cnt; | |
3639 | break; | |
73d80deb LAD |
3640 | case SCO_LINK: |
3641 | case ESCO_LINK: | |
3642 | cnt = hdev->sco_cnt; | |
3643 | break; | |
3644 | case LE_LINK: | |
3645 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3646 | break; | |
3647 | default: | |
3648 | cnt = 0; | |
3649 | BT_ERR("Unknown link type"); | |
3650 | } | |
3651 | ||
3652 | q = cnt / num; | |
3653 | *quote = q ? q : 1; | |
3654 | BT_DBG("chan %p quote %d", chan, *quote); | |
3655 | return chan; | |
3656 | } | |
3657 | ||
02b20f0b LAD |
3658 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3659 | { | |
3660 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3661 | struct hci_conn *conn; | |
3662 | int num = 0; | |
3663 | ||
3664 | BT_DBG("%s", hdev->name); | |
3665 | ||
bf4c6325 GP |
3666 | rcu_read_lock(); |
3667 | ||
3668 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3669 | struct hci_chan *chan; |
3670 | ||
3671 | if (conn->type != type) | |
3672 | continue; | |
3673 | ||
3674 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3675 | continue; | |
3676 | ||
3677 | num++; | |
3678 | ||
8192edef | 3679 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3680 | struct sk_buff *skb; |
3681 | ||
3682 | if (chan->sent) { | |
3683 | chan->sent = 0; | |
3684 | continue; | |
3685 | } | |
3686 | ||
3687 | if (skb_queue_empty(&chan->data_q)) | |
3688 | continue; | |
3689 | ||
3690 | skb = skb_peek(&chan->data_q); | |
3691 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3692 | continue; | |
3693 | ||
3694 | skb->priority = HCI_PRIO_MAX - 1; | |
3695 | ||
3696 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3697 | skb->priority); |
02b20f0b LAD |
3698 | } |
3699 | ||
3700 | if (hci_conn_num(hdev, type) == num) | |
3701 | break; | |
3702 | } | |
bf4c6325 GP |
3703 | |
3704 | rcu_read_unlock(); | |
3705 | ||
02b20f0b LAD |
3706 | } |
3707 | ||
b71d385a AE |
3708 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3709 | { | |
3710 | /* Calculate count of blocks used by this packet */ | |
3711 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3712 | } | |
3713 | ||
6039aa73 | 3714 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3715 | { |
d7a5a11d | 3716 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3717 | /* ACL tx timeout must be longer than maximum |
3718 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3719 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3720 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3721 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3722 | } |
63d2bc1b | 3723 | } |
1da177e4 | 3724 | |
6039aa73 | 3725 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3726 | { |
3727 | unsigned int cnt = hdev->acl_cnt; | |
3728 | struct hci_chan *chan; | |
3729 | struct sk_buff *skb; | |
3730 | int quote; | |
3731 | ||
3732 | __check_timeout(hdev, cnt); | |
04837f64 | 3733 | |
73d80deb | 3734 | while (hdev->acl_cnt && |
a8c5fb1a | 3735 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3736 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3737 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3738 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3739 | skb->len, skb->priority); |
73d80deb | 3740 | |
ec1cce24 LAD |
3741 | /* Stop if priority has changed */ |
3742 | if (skb->priority < priority) | |
3743 | break; | |
3744 | ||
3745 | skb = skb_dequeue(&chan->data_q); | |
3746 | ||
73d80deb | 3747 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3748 | bt_cb(skb)->force_active); |
04837f64 | 3749 | |
57d17d70 | 3750 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3751 | hdev->acl_last_tx = jiffies; |
3752 | ||
3753 | hdev->acl_cnt--; | |
73d80deb LAD |
3754 | chan->sent++; |
3755 | chan->conn->sent++; | |
1da177e4 LT |
3756 | } |
3757 | } | |
02b20f0b LAD |
3758 | |
3759 | if (cnt != hdev->acl_cnt) | |
3760 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3761 | } |
3762 | ||
6039aa73 | 3763 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3764 | { |
63d2bc1b | 3765 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3766 | struct hci_chan *chan; |
3767 | struct sk_buff *skb; | |
3768 | int quote; | |
bd1eb66b | 3769 | u8 type; |
b71d385a | 3770 | |
63d2bc1b | 3771 | __check_timeout(hdev, cnt); |
b71d385a | 3772 | |
bd1eb66b AE |
3773 | BT_DBG("%s", hdev->name); |
3774 | ||
3775 | if (hdev->dev_type == HCI_AMP) | |
3776 | type = AMP_LINK; | |
3777 | else | |
3778 | type = ACL_LINK; | |
3779 | ||
b71d385a | 3780 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3781 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3782 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3783 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3784 | int blocks; | |
3785 | ||
3786 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3787 | skb->len, skb->priority); |
b71d385a AE |
3788 | |
3789 | /* Stop if priority has changed */ | |
3790 | if (skb->priority < priority) | |
3791 | break; | |
3792 | ||
3793 | skb = skb_dequeue(&chan->data_q); | |
3794 | ||
3795 | blocks = __get_blocks(hdev, skb); | |
3796 | if (blocks > hdev->block_cnt) | |
3797 | return; | |
3798 | ||
3799 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3800 | bt_cb(skb)->force_active); |
b71d385a | 3801 | |
57d17d70 | 3802 | hci_send_frame(hdev, skb); |
b71d385a AE |
3803 | hdev->acl_last_tx = jiffies; |
3804 | ||
3805 | hdev->block_cnt -= blocks; | |
3806 | quote -= blocks; | |
3807 | ||
3808 | chan->sent += blocks; | |
3809 | chan->conn->sent += blocks; | |
3810 | } | |
3811 | } | |
3812 | ||
3813 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3814 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3815 | } |
3816 | ||
6039aa73 | 3817 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3818 | { |
3819 | BT_DBG("%s", hdev->name); | |
3820 | ||
bd1eb66b AE |
3821 | /* No ACL link over BR/EDR controller */ |
3822 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3823 | return; | |
3824 | ||
3825 | /* No AMP link over AMP controller */ | |
3826 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3827 | return; |
3828 | ||
3829 | switch (hdev->flow_ctl_mode) { | |
3830 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3831 | hci_sched_acl_pkt(hdev); | |
3832 | break; | |
3833 | ||
3834 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3835 | hci_sched_acl_blk(hdev); | |
3836 | break; | |
3837 | } | |
3838 | } | |
3839 | ||
1da177e4 | 3840 | /* Schedule SCO */ |
6039aa73 | 3841 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3842 | { |
3843 | struct hci_conn *conn; | |
3844 | struct sk_buff *skb; | |
3845 | int quote; | |
3846 | ||
3847 | BT_DBG("%s", hdev->name); | |
3848 | ||
52087a79 LAD |
3849 | if (!hci_conn_num(hdev, SCO_LINK)) |
3850 | return; | |
3851 | ||
1da177e4 LT |
3852 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3853 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3854 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3855 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3856 | |
3857 | conn->sent++; | |
3858 | if (conn->sent == ~0) | |
3859 | conn->sent = 0; | |
3860 | } | |
3861 | } | |
3862 | } | |
3863 | ||
6039aa73 | 3864 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3865 | { |
3866 | struct hci_conn *conn; | |
3867 | struct sk_buff *skb; | |
3868 | int quote; | |
3869 | ||
3870 | BT_DBG("%s", hdev->name); | |
3871 | ||
52087a79 LAD |
3872 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3873 | return; | |
3874 | ||
8fc9ced3 GP |
3875 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3876 | "e))) { | |
b6a0dc82 MH |
3877 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3878 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3879 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3880 | |
3881 | conn->sent++; | |
3882 | if (conn->sent == ~0) | |
3883 | conn->sent = 0; | |
3884 | } | |
3885 | } | |
3886 | } | |
3887 | ||
6039aa73 | 3888 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3889 | { |
73d80deb | 3890 | struct hci_chan *chan; |
6ed58ec5 | 3891 | struct sk_buff *skb; |
02b20f0b | 3892 | int quote, cnt, tmp; |
6ed58ec5 VT |
3893 | |
3894 | BT_DBG("%s", hdev->name); | |
3895 | ||
52087a79 LAD |
3896 | if (!hci_conn_num(hdev, LE_LINK)) |
3897 | return; | |
3898 | ||
d7a5a11d | 3899 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
3900 | /* LE tx timeout must be longer than maximum |
3901 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3902 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3903 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3904 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3905 | } |
3906 | ||
3907 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3908 | tmp = cnt; |
73d80deb | 3909 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3910 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3911 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3912 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3913 | skb->len, skb->priority); |
6ed58ec5 | 3914 | |
ec1cce24 LAD |
3915 | /* Stop if priority has changed */ |
3916 | if (skb->priority < priority) | |
3917 | break; | |
3918 | ||
3919 | skb = skb_dequeue(&chan->data_q); | |
3920 | ||
57d17d70 | 3921 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3922 | hdev->le_last_tx = jiffies; |
3923 | ||
3924 | cnt--; | |
73d80deb LAD |
3925 | chan->sent++; |
3926 | chan->conn->sent++; | |
6ed58ec5 VT |
3927 | } |
3928 | } | |
73d80deb | 3929 | |
6ed58ec5 VT |
3930 | if (hdev->le_pkts) |
3931 | hdev->le_cnt = cnt; | |
3932 | else | |
3933 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3934 | |
3935 | if (cnt != tmp) | |
3936 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3937 | } |
3938 | ||
3eff45ea | 3939 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3940 | { |
3eff45ea | 3941 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3942 | struct sk_buff *skb; |
3943 | ||
6ed58ec5 | 3944 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3945 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3946 | |
d7a5a11d | 3947 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
3948 | /* Schedule queues and send stuff to HCI driver */ |
3949 | hci_sched_acl(hdev); | |
3950 | hci_sched_sco(hdev); | |
3951 | hci_sched_esco(hdev); | |
3952 | hci_sched_le(hdev); | |
3953 | } | |
6ed58ec5 | 3954 | |
1da177e4 LT |
3955 | /* Send next queued raw (unknown type) packet */ |
3956 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3957 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3958 | } |
3959 | ||
25985edc | 3960 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3961 | |
3962 | /* ACL data packet */ | |
6039aa73 | 3963 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3964 | { |
3965 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3966 | struct hci_conn *conn; | |
3967 | __u16 handle, flags; | |
3968 | ||
3969 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3970 | ||
3971 | handle = __le16_to_cpu(hdr->handle); | |
3972 | flags = hci_flags(handle); | |
3973 | handle = hci_handle(handle); | |
3974 | ||
f0e09510 | 3975 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3976 | handle, flags); |
1da177e4 LT |
3977 | |
3978 | hdev->stat.acl_rx++; | |
3979 | ||
3980 | hci_dev_lock(hdev); | |
3981 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3982 | hci_dev_unlock(hdev); | |
8e87d142 | 3983 | |
1da177e4 | 3984 | if (conn) { |
65983fc7 | 3985 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3986 | |
1da177e4 | 3987 | /* Send to upper protocol */ |
686ebf28 UF |
3988 | l2cap_recv_acldata(conn, skb, flags); |
3989 | return; | |
1da177e4 | 3990 | } else { |
8e87d142 | 3991 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3992 | hdev->name, handle); |
1da177e4 LT |
3993 | } |
3994 | ||
3995 | kfree_skb(skb); | |
3996 | } | |
3997 | ||
3998 | /* SCO data packet */ | |
6039aa73 | 3999 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4000 | { |
4001 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4002 | struct hci_conn *conn; | |
4003 | __u16 handle; | |
4004 | ||
4005 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4006 | ||
4007 | handle = __le16_to_cpu(hdr->handle); | |
4008 | ||
f0e09510 | 4009 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4010 | |
4011 | hdev->stat.sco_rx++; | |
4012 | ||
4013 | hci_dev_lock(hdev); | |
4014 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4015 | hci_dev_unlock(hdev); | |
4016 | ||
4017 | if (conn) { | |
1da177e4 | 4018 | /* Send to upper protocol */ |
686ebf28 UF |
4019 | sco_recv_scodata(conn, skb); |
4020 | return; | |
1da177e4 | 4021 | } else { |
8e87d142 | 4022 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4023 | hdev->name, handle); |
1da177e4 LT |
4024 | } |
4025 | ||
4026 | kfree_skb(skb); | |
4027 | } | |
4028 | ||
9238f36a JH |
4029 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4030 | { | |
4031 | struct sk_buff *skb; | |
4032 | ||
4033 | skb = skb_peek(&hdev->cmd_q); | |
4034 | if (!skb) | |
4035 | return true; | |
4036 | ||
44d27137 | 4037 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4038 | } |
4039 | ||
42c6b129 JH |
4040 | static void hci_resend_last(struct hci_dev *hdev) |
4041 | { | |
4042 | struct hci_command_hdr *sent; | |
4043 | struct sk_buff *skb; | |
4044 | u16 opcode; | |
4045 | ||
4046 | if (!hdev->sent_cmd) | |
4047 | return; | |
4048 | ||
4049 | sent = (void *) hdev->sent_cmd->data; | |
4050 | opcode = __le16_to_cpu(sent->opcode); | |
4051 | if (opcode == HCI_OP_RESET) | |
4052 | return; | |
4053 | ||
4054 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4055 | if (!skb) | |
4056 | return; | |
4057 | ||
4058 | skb_queue_head(&hdev->cmd_q, skb); | |
4059 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4060 | } | |
4061 | ||
e6214487 JH |
4062 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4063 | hci_req_complete_t *req_complete, | |
4064 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4065 | { |
9238f36a JH |
4066 | struct sk_buff *skb; |
4067 | unsigned long flags; | |
4068 | ||
4069 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4070 | ||
42c6b129 JH |
4071 | /* If the completed command doesn't match the last one that was |
4072 | * sent we need to do special handling of it. | |
9238f36a | 4073 | */ |
42c6b129 JH |
4074 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4075 | /* Some CSR based controllers generate a spontaneous | |
4076 | * reset complete event during init and any pending | |
4077 | * command will never be completed. In such a case we | |
4078 | * need to resend whatever was the last sent | |
4079 | * command. | |
4080 | */ | |
4081 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4082 | hci_resend_last(hdev); | |
4083 | ||
9238f36a | 4084 | return; |
42c6b129 | 4085 | } |
9238f36a JH |
4086 | |
4087 | /* If the command succeeded and there's still more commands in | |
4088 | * this request the request is not yet complete. | |
4089 | */ | |
4090 | if (!status && !hci_req_is_complete(hdev)) | |
4091 | return; | |
4092 | ||
4093 | /* If this was the last command in a request the complete | |
4094 | * callback would be found in hdev->sent_cmd instead of the | |
4095 | * command queue (hdev->cmd_q). | |
4096 | */ | |
44d27137 JH |
4097 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
4098 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
4099 | return; |
4100 | } | |
53e21fbc | 4101 | |
44d27137 JH |
4102 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4103 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 4104 | return; |
9238f36a JH |
4105 | } |
4106 | ||
4107 | /* Remove all pending commands belonging to this request */ | |
4108 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4109 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4110 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4111 | __skb_queue_head(&hdev->cmd_q, skb); |
4112 | break; | |
4113 | } | |
4114 | ||
242c0ebd MH |
4115 | *req_complete = bt_cb(skb)->hci.req_complete; |
4116 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
9238f36a JH |
4117 | kfree_skb(skb); |
4118 | } | |
4119 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4120 | } |
4121 | ||
b78752cc | 4122 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4123 | { |
b78752cc | 4124 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4125 | struct sk_buff *skb; |
4126 | ||
4127 | BT_DBG("%s", hdev->name); | |
4128 | ||
1da177e4 | 4129 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4130 | /* Send copy to monitor */ |
4131 | hci_send_to_monitor(hdev, skb); | |
4132 | ||
1da177e4 LT |
4133 | if (atomic_read(&hdev->promisc)) { |
4134 | /* Send copy to the sockets */ | |
470fe1b5 | 4135 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4136 | } |
4137 | ||
d7a5a11d | 4138 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4139 | kfree_skb(skb); |
4140 | continue; | |
4141 | } | |
4142 | ||
4143 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4144 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4145 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4146 | case HCI_ACLDATA_PKT: |
4147 | case HCI_SCODATA_PKT: | |
4148 | kfree_skb(skb); | |
4149 | continue; | |
3ff50b79 | 4150 | } |
1da177e4 LT |
4151 | } |
4152 | ||
4153 | /* Process frame */ | |
d79f34e3 | 4154 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4155 | case HCI_EVENT_PKT: |
b78752cc | 4156 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4157 | hci_event_packet(hdev, skb); |
4158 | break; | |
4159 | ||
4160 | case HCI_ACLDATA_PKT: | |
4161 | BT_DBG("%s ACL data packet", hdev->name); | |
4162 | hci_acldata_packet(hdev, skb); | |
4163 | break; | |
4164 | ||
4165 | case HCI_SCODATA_PKT: | |
4166 | BT_DBG("%s SCO data packet", hdev->name); | |
4167 | hci_scodata_packet(hdev, skb); | |
4168 | break; | |
4169 | ||
4170 | default: | |
4171 | kfree_skb(skb); | |
4172 | break; | |
4173 | } | |
4174 | } | |
1da177e4 LT |
4175 | } |
4176 | ||
c347b765 | 4177 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4178 | { |
c347b765 | 4179 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4180 | struct sk_buff *skb; |
4181 | ||
2104786b AE |
4182 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4183 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4184 | |
1da177e4 | 4185 | /* Send queued commands */ |
5a08ecce AE |
4186 | if (atomic_read(&hdev->cmd_cnt)) { |
4187 | skb = skb_dequeue(&hdev->cmd_q); | |
4188 | if (!skb) | |
4189 | return; | |
4190 | ||
7585b97a | 4191 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4192 | |
a675d7f1 | 4193 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4194 | if (hdev->sent_cmd) { |
1da177e4 | 4195 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4196 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4197 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4198 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4199 | else |
65cc2b49 MH |
4200 | schedule_delayed_work(&hdev->cmd_timer, |
4201 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4202 | } else { |
4203 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4204 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4205 | } |
4206 | } | |
4207 | } |