Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
0857dd3b | 40 | #include "hci_request.h" |
60c5f5fb | 41 | #include "hci_debugfs.h" |
970c4e46 | 42 | #include "smp.h" |
6d5d2ee6 | 43 | #include "leds.h" |
970c4e46 | 44 | |
b78752cc | 45 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 46 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 47 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 48 | |
1da177e4 LT |
49 | /* HCI device list */ |
50 | LIST_HEAD(hci_dev_list); | |
51 | DEFINE_RWLOCK(hci_dev_list_lock); | |
52 | ||
53 | /* HCI callback list */ | |
54 | LIST_HEAD(hci_cb_list); | |
fba7ecf0 | 55 | DEFINE_MUTEX(hci_cb_list_lock); |
1da177e4 | 56 | |
3df92b31 SL |
57 | /* HCI ID Numbering */ |
58 | static DEFINE_IDA(hci_index_ida); | |
59 | ||
baf27f6e MH |
60 | /* ---- HCI debugfs entries ---- */ |
61 | ||
4b4148e9 MH |
62 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
63 | size_t count, loff_t *ppos) | |
64 | { | |
65 | struct hci_dev *hdev = file->private_data; | |
66 | char buf[3]; | |
67 | ||
74b93e9f | 68 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; |
4b4148e9 MH |
69 | buf[1] = '\n'; |
70 | buf[2] = '\0'; | |
71 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
72 | } | |
73 | ||
74 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
75 | size_t count, loff_t *ppos) | |
76 | { | |
77 | struct hci_dev *hdev = file->private_data; | |
78 | struct sk_buff *skb; | |
79 | char buf[32]; | |
80 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
81 | bool enable; | |
4b4148e9 MH |
82 | |
83 | if (!test_bit(HCI_UP, &hdev->flags)) | |
84 | return -ENETDOWN; | |
85 | ||
86 | if (copy_from_user(buf, user_buf, buf_size)) | |
87 | return -EFAULT; | |
88 | ||
89 | buf[buf_size] = '\0'; | |
90 | if (strtobool(buf, &enable)) | |
91 | return -EINVAL; | |
92 | ||
b7cb93e5 | 93 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
4b4148e9 MH |
94 | return -EALREADY; |
95 | ||
b504430c | 96 | hci_req_sync_lock(hdev); |
4b4148e9 MH |
97 | if (enable) |
98 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
99 | HCI_CMD_TIMEOUT); | |
100 | else | |
101 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
102 | HCI_CMD_TIMEOUT); | |
b504430c | 103 | hci_req_sync_unlock(hdev); |
4b4148e9 MH |
104 | |
105 | if (IS_ERR(skb)) | |
106 | return PTR_ERR(skb); | |
107 | ||
4b4148e9 MH |
108 | kfree_skb(skb); |
109 | ||
b7cb93e5 | 110 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
4b4148e9 MH |
111 | |
112 | return count; | |
113 | } | |
114 | ||
115 | static const struct file_operations dut_mode_fops = { | |
116 | .open = simple_open, | |
117 | .read = dut_mode_read, | |
118 | .write = dut_mode_write, | |
119 | .llseek = default_llseek, | |
120 | }; | |
121 | ||
4b4113d6 MH |
122 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
123 | size_t count, loff_t *ppos) | |
124 | { | |
125 | struct hci_dev *hdev = file->private_data; | |
126 | char buf[3]; | |
127 | ||
74b93e9f | 128 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; |
4b4113d6 MH |
129 | buf[1] = '\n'; |
130 | buf[2] = '\0'; | |
131 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
132 | } | |
133 | ||
134 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, | |
135 | size_t count, loff_t *ppos) | |
136 | { | |
137 | struct hci_dev *hdev = file->private_data; | |
138 | char buf[32]; | |
139 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
140 | bool enable; | |
141 | int err; | |
142 | ||
143 | if (copy_from_user(buf, user_buf, buf_size)) | |
144 | return -EFAULT; | |
145 | ||
146 | buf[buf_size] = '\0'; | |
147 | if (strtobool(buf, &enable)) | |
148 | return -EINVAL; | |
149 | ||
7e995b9e MH |
150 | /* When the diagnostic flags are not persistent and the transport |
151 | * is not active, then there is no need for the vendor callback. | |
152 | * | |
153 | * Instead just store the desired value. If needed the setting | |
154 | * will be programmed when the controller gets powered on. | |
155 | */ | |
156 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
157 | !test_bit(HCI_RUNNING, &hdev->flags)) | |
158 | goto done; | |
159 | ||
b504430c | 160 | hci_req_sync_lock(hdev); |
4b4113d6 | 161 | err = hdev->set_diag(hdev, enable); |
b504430c | 162 | hci_req_sync_unlock(hdev); |
4b4113d6 MH |
163 | |
164 | if (err < 0) | |
165 | return err; | |
166 | ||
7e995b9e | 167 | done: |
4b4113d6 MH |
168 | if (enable) |
169 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); | |
170 | else | |
171 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); | |
172 | ||
173 | return count; | |
174 | } | |
175 | ||
176 | static const struct file_operations vendor_diag_fops = { | |
177 | .open = simple_open, | |
178 | .read = vendor_diag_read, | |
179 | .write = vendor_diag_write, | |
180 | .llseek = default_llseek, | |
181 | }; | |
182 | ||
f640ee98 MH |
183 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
184 | { | |
185 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
186 | &dut_mode_fops); | |
187 | ||
188 | if (hdev->set_diag) | |
189 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, | |
190 | &vendor_diag_fops); | |
191 | } | |
192 | ||
a1d01db1 | 193 | static int hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 194 | { |
42c6b129 | 195 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
196 | |
197 | /* Reset device */ | |
42c6b129 JH |
198 | set_bit(HCI_RESET, &req->hdev->flags); |
199 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
a1d01db1 | 200 | return 0; |
1da177e4 LT |
201 | } |
202 | ||
42c6b129 | 203 | static void bredr_init(struct hci_request *req) |
1da177e4 | 204 | { |
42c6b129 | 205 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 206 | |
1da177e4 | 207 | /* Read Local Supported Features */ |
42c6b129 | 208 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 209 | |
1143e5a6 | 210 | /* Read Local Version */ |
42c6b129 | 211 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
212 | |
213 | /* Read BD Address */ | |
42c6b129 | 214 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
215 | } |
216 | ||
0af801b9 | 217 | static void amp_init1(struct hci_request *req) |
e61ef499 | 218 | { |
42c6b129 | 219 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 220 | |
e61ef499 | 221 | /* Read Local Version */ |
42c6b129 | 222 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 223 | |
f6996cfe MH |
224 | /* Read Local Supported Commands */ |
225 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
226 | ||
6bcbc489 | 227 | /* Read Local AMP Info */ |
42c6b129 | 228 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
229 | |
230 | /* Read Data Blk size */ | |
42c6b129 | 231 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 232 | |
f38ba941 MH |
233 | /* Read Flow Control Mode */ |
234 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
235 | ||
7528ca1c MH |
236 | /* Read Location Data */ |
237 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
238 | } |
239 | ||
a1d01db1 | 240 | static int amp_init2(struct hci_request *req) |
0af801b9 JH |
241 | { |
242 | /* Read Local Supported Features. Not all AMP controllers | |
243 | * support this so it's placed conditionally in the second | |
244 | * stage init. | |
245 | */ | |
246 | if (req->hdev->commands[14] & 0x20) | |
247 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
a1d01db1 JH |
248 | |
249 | return 0; | |
0af801b9 JH |
250 | } |
251 | ||
a1d01db1 | 252 | static int hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 253 | { |
42c6b129 | 254 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
255 | |
256 | BT_DBG("%s %ld", hdev->name, opt); | |
257 | ||
11778716 AE |
258 | /* Reset */ |
259 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 260 | hci_reset_req(req, 0); |
11778716 | 261 | |
e61ef499 AE |
262 | switch (hdev->dev_type) { |
263 | case HCI_BREDR: | |
42c6b129 | 264 | bredr_init(req); |
e61ef499 AE |
265 | break; |
266 | ||
267 | case HCI_AMP: | |
0af801b9 | 268 | amp_init1(req); |
e61ef499 AE |
269 | break; |
270 | ||
271 | default: | |
272 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
273 | break; | |
274 | } | |
a1d01db1 JH |
275 | |
276 | return 0; | |
e61ef499 AE |
277 | } |
278 | ||
42c6b129 | 279 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 280 | { |
2177bab5 JH |
281 | __le16 param; |
282 | __u8 flt_type; | |
283 | ||
284 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 285 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
286 | |
287 | /* Read Class of Device */ | |
42c6b129 | 288 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
289 | |
290 | /* Read Local Name */ | |
42c6b129 | 291 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
292 | |
293 | /* Read Voice Setting */ | |
42c6b129 | 294 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 295 | |
b4cb9fb2 MH |
296 | /* Read Number of Supported IAC */ |
297 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
298 | ||
4b836f39 MH |
299 | /* Read Current IAC LAP */ |
300 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
301 | ||
2177bab5 JH |
302 | /* Clear Event Filters */ |
303 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 304 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
305 | |
306 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 307 | param = cpu_to_le16(0x7d00); |
42c6b129 | 308 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 JH |
309 | } |
310 | ||
42c6b129 | 311 | static void le_setup(struct hci_request *req) |
2177bab5 | 312 | { |
c73eee91 JH |
313 | struct hci_dev *hdev = req->hdev; |
314 | ||
2177bab5 | 315 | /* Read LE Buffer Size */ |
42c6b129 | 316 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
317 | |
318 | /* Read LE Local Supported Features */ | |
42c6b129 | 319 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 320 | |
747d3f03 MH |
321 | /* Read LE Supported States */ |
322 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
323 | ||
c73eee91 JH |
324 | /* LE-only controllers have LE implicitly enabled */ |
325 | if (!lmp_bredr_capable(hdev)) | |
a1536da2 | 326 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
2177bab5 JH |
327 | } |
328 | ||
42c6b129 | 329 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 330 | { |
42c6b129 JH |
331 | struct hci_dev *hdev = req->hdev; |
332 | ||
2177bab5 JH |
333 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
334 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
335 | * command otherwise. | |
336 | */ | |
337 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
338 | ||
339 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
340 | * any event mask for pre 1.2 devices. | |
341 | */ | |
342 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
343 | return; | |
344 | ||
345 | if (lmp_bredr_capable(hdev)) { | |
346 | events[4] |= 0x01; /* Flow Specification Complete */ | |
c7882cbd MH |
347 | } else { |
348 | /* Use a different default for LE-only devices */ | |
349 | memset(events, 0, sizeof(events)); | |
c7882cbd MH |
350 | events[1] |= 0x20; /* Command Complete */ |
351 | events[1] |= 0x40; /* Command Status */ | |
352 | events[1] |= 0x80; /* Hardware Error */ | |
5c3d3b4c MH |
353 | |
354 | /* If the controller supports the Disconnect command, enable | |
355 | * the corresponding event. In addition enable packet flow | |
356 | * control related events. | |
357 | */ | |
358 | if (hdev->commands[0] & 0x20) { | |
359 | events[0] |= 0x10; /* Disconnection Complete */ | |
360 | events[2] |= 0x04; /* Number of Completed Packets */ | |
361 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
362 | } | |
363 | ||
364 | /* If the controller supports the Read Remote Version | |
365 | * Information command, enable the corresponding event. | |
366 | */ | |
367 | if (hdev->commands[2] & 0x80) | |
368 | events[1] |= 0x08; /* Read Remote Version Information | |
369 | * Complete | |
370 | */ | |
0da71f1b MH |
371 | |
372 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
373 | events[0] |= 0x80; /* Encryption Change */ | |
374 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
375 | } | |
2177bab5 JH |
376 | } |
377 | ||
9fe759ce MH |
378 | if (lmp_inq_rssi_capable(hdev) || |
379 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2177bab5 JH |
380 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
381 | ||
70f56aa2 MH |
382 | if (lmp_ext_feat_capable(hdev)) |
383 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
384 | ||
385 | if (lmp_esco_capable(hdev)) { | |
386 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
387 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
388 | } | |
389 | ||
2177bab5 JH |
390 | if (lmp_sniffsubr_capable(hdev)) |
391 | events[5] |= 0x20; /* Sniff Subrating */ | |
392 | ||
393 | if (lmp_pause_enc_capable(hdev)) | |
394 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
395 | ||
396 | if (lmp_ext_inq_capable(hdev)) | |
397 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
398 | ||
399 | if (lmp_no_flush_capable(hdev)) | |
400 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
401 | ||
402 | if (lmp_lsto_capable(hdev)) | |
403 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
404 | ||
405 | if (lmp_ssp_capable(hdev)) { | |
406 | events[6] |= 0x01; /* IO Capability Request */ | |
407 | events[6] |= 0x02; /* IO Capability Response */ | |
408 | events[6] |= 0x04; /* User Confirmation Request */ | |
409 | events[6] |= 0x08; /* User Passkey Request */ | |
410 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
411 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
412 | events[7] |= 0x04; /* User Passkey Notification */ | |
413 | events[7] |= 0x08; /* Keypress Notification */ | |
414 | events[7] |= 0x10; /* Remote Host Supported | |
415 | * Features Notification | |
416 | */ | |
417 | } | |
418 | ||
419 | if (lmp_le_capable(hdev)) | |
420 | events[7] |= 0x20; /* LE Meta-Event */ | |
421 | ||
42c6b129 | 422 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
423 | } |
424 | ||
a1d01db1 | 425 | static int hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 426 | { |
42c6b129 JH |
427 | struct hci_dev *hdev = req->hdev; |
428 | ||
0af801b9 JH |
429 | if (hdev->dev_type == HCI_AMP) |
430 | return amp_init2(req); | |
431 | ||
2177bab5 | 432 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 433 | bredr_setup(req); |
56f87901 | 434 | else |
a358dc11 | 435 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
2177bab5 JH |
436 | |
437 | if (lmp_le_capable(hdev)) | |
42c6b129 | 438 | le_setup(req); |
2177bab5 | 439 | |
0f3adeae MH |
440 | /* All Bluetooth 1.2 and later controllers should support the |
441 | * HCI command for reading the local supported commands. | |
442 | * | |
443 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
444 | * but do not have support for this command. If that is the case, | |
445 | * the driver can quirk the behavior and skip reading the local | |
446 | * supported commands. | |
3f8e2d75 | 447 | */ |
0f3adeae MH |
448 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
449 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
42c6b129 | 450 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
451 | |
452 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
453 | /* When SSP is available, then the host features page |
454 | * should also be available as well. However some | |
455 | * controllers list the max_page as 0 as long as SSP | |
456 | * has not been enabled. To achieve proper debugging | |
457 | * output, force the minimum max_page to 1 at least. | |
458 | */ | |
459 | hdev->max_page = 0x01; | |
460 | ||
d7a5a11d | 461 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
2177bab5 | 462 | u8 mode = 0x01; |
574ea3c7 | 463 | |
42c6b129 JH |
464 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
465 | sizeof(mode), &mode); | |
2177bab5 JH |
466 | } else { |
467 | struct hci_cp_write_eir cp; | |
468 | ||
469 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
470 | memset(&cp, 0, sizeof(cp)); | |
471 | ||
42c6b129 | 472 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
473 | } |
474 | } | |
475 | ||
043ec9bf MH |
476 | if (lmp_inq_rssi_capable(hdev) || |
477 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { | |
04422da9 MH |
478 | u8 mode; |
479 | ||
480 | /* If Extended Inquiry Result events are supported, then | |
481 | * they are clearly preferred over Inquiry Result with RSSI | |
482 | * events. | |
483 | */ | |
484 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
485 | ||
486 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); | |
487 | } | |
2177bab5 JH |
488 | |
489 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 490 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
491 | |
492 | if (lmp_ext_feat_capable(hdev)) { | |
493 | struct hci_cp_read_local_ext_features cp; | |
494 | ||
495 | cp.page = 0x01; | |
42c6b129 JH |
496 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
497 | sizeof(cp), &cp); | |
2177bab5 JH |
498 | } |
499 | ||
d7a5a11d | 500 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
2177bab5 | 501 | u8 enable = 1; |
42c6b129 JH |
502 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
503 | &enable); | |
2177bab5 | 504 | } |
a1d01db1 JH |
505 | |
506 | return 0; | |
2177bab5 JH |
507 | } |
508 | ||
42c6b129 | 509 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 510 | { |
42c6b129 | 511 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
512 | struct hci_cp_write_def_link_policy cp; |
513 | u16 link_policy = 0; | |
514 | ||
515 | if (lmp_rswitch_capable(hdev)) | |
516 | link_policy |= HCI_LP_RSWITCH; | |
517 | if (lmp_hold_capable(hdev)) | |
518 | link_policy |= HCI_LP_HOLD; | |
519 | if (lmp_sniff_capable(hdev)) | |
520 | link_policy |= HCI_LP_SNIFF; | |
521 | if (lmp_park_capable(hdev)) | |
522 | link_policy |= HCI_LP_PARK; | |
523 | ||
524 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 525 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
526 | } |
527 | ||
42c6b129 | 528 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 529 | { |
42c6b129 | 530 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
531 | struct hci_cp_write_le_host_supported cp; |
532 | ||
c73eee91 JH |
533 | /* LE-only devices do not support explicit enablement */ |
534 | if (!lmp_bredr_capable(hdev)) | |
535 | return; | |
536 | ||
2177bab5 JH |
537 | memset(&cp, 0, sizeof(cp)); |
538 | ||
d7a5a11d | 539 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
2177bab5 | 540 | cp.le = 0x01; |
32226e4f | 541 | cp.simul = 0x00; |
2177bab5 JH |
542 | } |
543 | ||
544 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
545 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
546 | &cp); | |
2177bab5 JH |
547 | } |
548 | ||
d62e6d67 JH |
549 | static void hci_set_event_mask_page_2(struct hci_request *req) |
550 | { | |
551 | struct hci_dev *hdev = req->hdev; | |
552 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
553 | ||
554 | /* If Connectionless Slave Broadcast master role is supported | |
555 | * enable all necessary events for it. | |
556 | */ | |
53b834d2 | 557 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
558 | events[1] |= 0x40; /* Triggered Clock Capture */ |
559 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
560 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
561 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
562 | } | |
563 | ||
564 | /* If Connectionless Slave Broadcast slave role is supported | |
565 | * enable all necessary events for it. | |
566 | */ | |
53b834d2 | 567 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
568 | events[2] |= 0x01; /* Synchronization Train Received */ |
569 | events[2] |= 0x02; /* CSB Receive */ | |
570 | events[2] |= 0x04; /* CSB Timeout */ | |
571 | events[2] |= 0x08; /* Truncated Page Complete */ | |
572 | } | |
573 | ||
40c59fcb | 574 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 575 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
576 | events[2] |= 0x80; |
577 | ||
d62e6d67 JH |
578 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
579 | } | |
580 | ||
a1d01db1 | 581 | static int hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 582 | { |
42c6b129 | 583 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 584 | u8 p; |
42c6b129 | 585 | |
0da71f1b MH |
586 | hci_setup_event_mask(req); |
587 | ||
e81be90b JH |
588 | if (hdev->commands[6] & 0x20 && |
589 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
48ce62c4 MH |
590 | struct hci_cp_read_stored_link_key cp; |
591 | ||
592 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
593 | cp.read_all = 0x01; | |
594 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); | |
595 | } | |
596 | ||
2177bab5 | 597 | if (hdev->commands[5] & 0x10) |
42c6b129 | 598 | hci_setup_link_policy(req); |
2177bab5 | 599 | |
417287de MH |
600 | if (hdev->commands[8] & 0x01) |
601 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); | |
602 | ||
603 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
604 | * support the Read Page Scan Type command. Check support for | |
605 | * this command in the bit mask of supported commands. | |
606 | */ | |
607 | if (hdev->commands[13] & 0x01) | |
608 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
609 | ||
9193c6e8 AG |
610 | if (lmp_le_capable(hdev)) { |
611 | u8 events[8]; | |
612 | ||
613 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
614 | |
615 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
616 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
617 | |
618 | /* If controller supports the Connection Parameters Request | |
619 | * Link Layer Procedure, enable the corresponding event. | |
620 | */ | |
621 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
622 | events[0] |= 0x20; /* LE Remote Connection | |
623 | * Parameter Request | |
624 | */ | |
625 | ||
a9f6068e MH |
626 | /* If the controller supports the Data Length Extension |
627 | * feature, enable the corresponding event. | |
628 | */ | |
629 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
630 | events[0] |= 0x40; /* LE Data Length Change */ | |
631 | ||
4b71bba4 MH |
632 | /* If the controller supports Extended Scanner Filter |
633 | * Policies, enable the correspondig event. | |
634 | */ | |
635 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
636 | events[1] |= 0x04; /* LE Direct Advertising | |
637 | * Report | |
638 | */ | |
639 | ||
7d26f5c4 MH |
640 | /* If the controller supports the LE Set Scan Enable command, |
641 | * enable the corresponding advertising report event. | |
642 | */ | |
643 | if (hdev->commands[26] & 0x08) | |
644 | events[0] |= 0x02; /* LE Advertising Report */ | |
645 | ||
646 | /* If the controller supports the LE Create Connection | |
647 | * command, enable the corresponding event. | |
648 | */ | |
649 | if (hdev->commands[26] & 0x10) | |
650 | events[0] |= 0x01; /* LE Connection Complete */ | |
651 | ||
652 | /* If the controller supports the LE Connection Update | |
653 | * command, enable the corresponding event. | |
654 | */ | |
655 | if (hdev->commands[27] & 0x04) | |
656 | events[0] |= 0x04; /* LE Connection Update | |
657 | * Complete | |
658 | */ | |
659 | ||
660 | /* If the controller supports the LE Read Remote Used Features | |
661 | * command, enable the corresponding event. | |
662 | */ | |
663 | if (hdev->commands[27] & 0x20) | |
664 | events[0] |= 0x08; /* LE Read Remote Used | |
665 | * Features Complete | |
666 | */ | |
667 | ||
5a34bd5f MH |
668 | /* If the controller supports the LE Read Local P-256 |
669 | * Public Key command, enable the corresponding event. | |
670 | */ | |
671 | if (hdev->commands[34] & 0x02) | |
672 | events[0] |= 0x80; /* LE Read Local P-256 | |
673 | * Public Key Complete | |
674 | */ | |
675 | ||
676 | /* If the controller supports the LE Generate DHKey | |
677 | * command, enable the corresponding event. | |
678 | */ | |
679 | if (hdev->commands[34] & 0x04) | |
680 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
681 | ||
9193c6e8 AG |
682 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
683 | events); | |
684 | ||
15a49cca MH |
685 | if (hdev->commands[25] & 0x40) { |
686 | /* Read LE Advertising Channel TX Power */ | |
687 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
688 | } | |
689 | ||
2ab216a7 MH |
690 | if (hdev->commands[26] & 0x40) { |
691 | /* Read LE White List Size */ | |
692 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, | |
693 | 0, NULL); | |
694 | } | |
695 | ||
696 | if (hdev->commands[26] & 0x80) { | |
697 | /* Clear LE White List */ | |
698 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
699 | } | |
700 | ||
a9f6068e MH |
701 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
702 | /* Read LE Maximum Data Length */ | |
703 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); | |
704 | ||
705 | /* Read LE Suggested Default Data Length */ | |
706 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); | |
707 | } | |
708 | ||
42c6b129 | 709 | hci_set_le_support(req); |
9193c6e8 | 710 | } |
d2c5d77f JH |
711 | |
712 | /* Read features beyond page 1 if available */ | |
713 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
714 | struct hci_cp_read_local_ext_features cp; | |
715 | ||
716 | cp.page = p; | |
717 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
718 | sizeof(cp), &cp); | |
719 | } | |
a1d01db1 JH |
720 | |
721 | return 0; | |
2177bab5 JH |
722 | } |
723 | ||
a1d01db1 | 724 | static int hci_init4_req(struct hci_request *req, unsigned long opt) |
5d4e7e8d JH |
725 | { |
726 | struct hci_dev *hdev = req->hdev; | |
727 | ||
36f260ce MH |
728 | /* Some Broadcom based Bluetooth controllers do not support the |
729 | * Delete Stored Link Key command. They are clearly indicating its | |
730 | * absence in the bit mask of supported commands. | |
731 | * | |
732 | * Check the supported commands and only if the the command is marked | |
733 | * as supported send it. If not supported assume that the controller | |
734 | * does not have actual support for stored link keys which makes this | |
735 | * command redundant anyway. | |
736 | * | |
737 | * Some controllers indicate that they support handling deleting | |
738 | * stored link keys, but they don't. The quirk lets a driver | |
739 | * just disable this command. | |
740 | */ | |
741 | if (hdev->commands[6] & 0x80 && | |
742 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
743 | struct hci_cp_delete_stored_link_key cp; | |
744 | ||
745 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
746 | cp.delete_all = 0x01; | |
747 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
748 | sizeof(cp), &cp); | |
749 | } | |
750 | ||
d62e6d67 JH |
751 | /* Set event mask page 2 if the HCI command for it is supported */ |
752 | if (hdev->commands[22] & 0x04) | |
753 | hci_set_event_mask_page_2(req); | |
754 | ||
109e3191 MH |
755 | /* Read local codec list if the HCI command is supported */ |
756 | if (hdev->commands[29] & 0x20) | |
757 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
758 | ||
f4fe73ed MH |
759 | /* Get MWS transport configuration if the HCI command is supported */ |
760 | if (hdev->commands[30] & 0x08) | |
761 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
762 | ||
5d4e7e8d | 763 | /* Check for Synchronization Train support */ |
53b834d2 | 764 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 765 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
766 | |
767 | /* Enable Secure Connections if supported and configured */ | |
d7a5a11d | 768 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
574ea3c7 | 769 | bredr_sc_enabled(hdev)) { |
a6d0d690 | 770 | u8 support = 0x01; |
574ea3c7 | 771 | |
a6d0d690 MH |
772 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
773 | sizeof(support), &support); | |
774 | } | |
a1d01db1 JH |
775 | |
776 | return 0; | |
5d4e7e8d JH |
777 | } |
778 | ||
2177bab5 JH |
779 | static int __hci_init(struct hci_dev *hdev) |
780 | { | |
781 | int err; | |
782 | ||
4ebeee2d | 783 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL); |
2177bab5 JH |
784 | if (err < 0) |
785 | return err; | |
786 | ||
f640ee98 MH |
787 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
788 | hci_debugfs_create_basic(hdev); | |
4b4148e9 | 789 | |
4ebeee2d | 790 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL); |
0af801b9 JH |
791 | if (err < 0) |
792 | return err; | |
793 | ||
2177bab5 JH |
794 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
795 | * BR/EDR/LE type controllers. AMP controllers only need the | |
0af801b9 | 796 | * first two stages of init. |
2177bab5 JH |
797 | */ |
798 | if (hdev->dev_type != HCI_BREDR) | |
799 | return 0; | |
800 | ||
4ebeee2d | 801 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL); |
5d4e7e8d JH |
802 | if (err < 0) |
803 | return err; | |
804 | ||
4ebeee2d | 805 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL); |
baf27f6e MH |
806 | if (err < 0) |
807 | return err; | |
808 | ||
ec6cef9c MH |
809 | /* This function is only called when the controller is actually in |
810 | * configured state. When the controller is marked as unconfigured, | |
811 | * this initialization procedure is not run. | |
812 | * | |
813 | * It means that it is possible that a controller runs through its | |
814 | * setup phase and then discovers missing settings. If that is the | |
815 | * case, then this function will not be called. It then will only | |
816 | * be called during the config phase. | |
817 | * | |
818 | * So only when in setup phase or config phase, create the debugfs | |
819 | * entries and register the SMP channels. | |
baf27f6e | 820 | */ |
d7a5a11d MH |
821 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
822 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
baf27f6e MH |
823 | return 0; |
824 | ||
60c5f5fb MH |
825 | hci_debugfs_create_common(hdev); |
826 | ||
71c3b60e | 827 | if (lmp_bredr_capable(hdev)) |
60c5f5fb | 828 | hci_debugfs_create_bredr(hdev); |
2bfa3531 | 829 | |
162a3bac | 830 | if (lmp_le_capable(hdev)) |
60c5f5fb | 831 | hci_debugfs_create_le(hdev); |
e7b8fc92 | 832 | |
baf27f6e | 833 | return 0; |
2177bab5 JH |
834 | } |
835 | ||
a1d01db1 | 836 | static int hci_init0_req(struct hci_request *req, unsigned long opt) |
0ebca7d6 MH |
837 | { |
838 | struct hci_dev *hdev = req->hdev; | |
839 | ||
840 | BT_DBG("%s %ld", hdev->name, opt); | |
841 | ||
842 | /* Reset */ | |
843 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
844 | hci_reset_req(req, 0); | |
845 | ||
846 | /* Read Local Version */ | |
847 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
848 | ||
849 | /* Read BD Address */ | |
850 | if (hdev->set_bdaddr) | |
851 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
a1d01db1 JH |
852 | |
853 | return 0; | |
0ebca7d6 MH |
854 | } |
855 | ||
856 | static int __hci_unconf_init(struct hci_dev *hdev) | |
857 | { | |
858 | int err; | |
859 | ||
cc78b44b MH |
860 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
861 | return 0; | |
862 | ||
4ebeee2d | 863 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL); |
0ebca7d6 MH |
864 | if (err < 0) |
865 | return err; | |
866 | ||
f640ee98 MH |
867 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
868 | hci_debugfs_create_basic(hdev); | |
869 | ||
0ebca7d6 MH |
870 | return 0; |
871 | } | |
872 | ||
a1d01db1 | 873 | static int hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
874 | { |
875 | __u8 scan = opt; | |
876 | ||
42c6b129 | 877 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
878 | |
879 | /* Inquiry and Page scans */ | |
42c6b129 | 880 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
a1d01db1 | 881 | return 0; |
1da177e4 LT |
882 | } |
883 | ||
a1d01db1 | 884 | static int hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
885 | { |
886 | __u8 auth = opt; | |
887 | ||
42c6b129 | 888 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
889 | |
890 | /* Authentication */ | |
42c6b129 | 891 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
a1d01db1 | 892 | return 0; |
1da177e4 LT |
893 | } |
894 | ||
a1d01db1 | 895 | static int hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
896 | { |
897 | __u8 encrypt = opt; | |
898 | ||
42c6b129 | 899 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 900 | |
e4e8e37c | 901 | /* Encryption */ |
42c6b129 | 902 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
a1d01db1 | 903 | return 0; |
1da177e4 LT |
904 | } |
905 | ||
a1d01db1 | 906 | static int hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
907 | { |
908 | __le16 policy = cpu_to_le16(opt); | |
909 | ||
42c6b129 | 910 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
911 | |
912 | /* Default link policy */ | |
42c6b129 | 913 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
a1d01db1 | 914 | return 0; |
e4e8e37c MH |
915 | } |
916 | ||
8e87d142 | 917 | /* Get HCI device by index. |
1da177e4 LT |
918 | * Device is held on return. */ |
919 | struct hci_dev *hci_dev_get(int index) | |
920 | { | |
8035ded4 | 921 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
922 | |
923 | BT_DBG("%d", index); | |
924 | ||
925 | if (index < 0) | |
926 | return NULL; | |
927 | ||
928 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 929 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
930 | if (d->id == index) { |
931 | hdev = hci_dev_hold(d); | |
932 | break; | |
933 | } | |
934 | } | |
935 | read_unlock(&hci_dev_list_lock); | |
936 | return hdev; | |
937 | } | |
1da177e4 LT |
938 | |
939 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 940 | |
30dc78e1 JH |
941 | bool hci_discovery_active(struct hci_dev *hdev) |
942 | { | |
943 | struct discovery_state *discov = &hdev->discovery; | |
944 | ||
6fbe195d | 945 | switch (discov->state) { |
343f935b | 946 | case DISCOVERY_FINDING: |
6fbe195d | 947 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
948 | return true; |
949 | ||
6fbe195d AG |
950 | default: |
951 | return false; | |
952 | } | |
30dc78e1 JH |
953 | } |
954 | ||
ff9ef578 JH |
955 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
956 | { | |
bb3e0a33 JH |
957 | int old_state = hdev->discovery.state; |
958 | ||
ff9ef578 JH |
959 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
960 | ||
bb3e0a33 | 961 | if (old_state == state) |
ff9ef578 JH |
962 | return; |
963 | ||
bb3e0a33 JH |
964 | hdev->discovery.state = state; |
965 | ||
ff9ef578 JH |
966 | switch (state) { |
967 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
968 | hci_update_background_scan(hdev); |
969 | ||
bb3e0a33 | 970 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 971 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
972 | break; |
973 | case DISCOVERY_STARTING: | |
974 | break; | |
343f935b | 975 | case DISCOVERY_FINDING: |
ff9ef578 JH |
976 | mgmt_discovering(hdev, 1); |
977 | break; | |
30dc78e1 JH |
978 | case DISCOVERY_RESOLVING: |
979 | break; | |
ff9ef578 JH |
980 | case DISCOVERY_STOPPING: |
981 | break; | |
982 | } | |
ff9ef578 JH |
983 | } |
984 | ||
1f9b9a5d | 985 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 986 | { |
30883512 | 987 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 988 | struct inquiry_entry *p, *n; |
1da177e4 | 989 | |
561aafbc JH |
990 | list_for_each_entry_safe(p, n, &cache->all, all) { |
991 | list_del(&p->all); | |
b57c1a56 | 992 | kfree(p); |
1da177e4 | 993 | } |
561aafbc JH |
994 | |
995 | INIT_LIST_HEAD(&cache->unknown); | |
996 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
997 | } |
998 | ||
a8c5fb1a GP |
999 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1000 | bdaddr_t *bdaddr) | |
1da177e4 | 1001 | { |
30883512 | 1002 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1003 | struct inquiry_entry *e; |
1004 | ||
6ed93dc6 | 1005 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1006 | |
561aafbc JH |
1007 | list_for_each_entry(e, &cache->all, all) { |
1008 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1009 | return e; | |
1010 | } | |
1011 | ||
1012 | return NULL; | |
1013 | } | |
1014 | ||
1015 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1016 | bdaddr_t *bdaddr) |
561aafbc | 1017 | { |
30883512 | 1018 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1019 | struct inquiry_entry *e; |
1020 | ||
6ed93dc6 | 1021 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1022 | |
1023 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1024 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1025 | return e; |
1026 | } | |
1027 | ||
1028 | return NULL; | |
1da177e4 LT |
1029 | } |
1030 | ||
30dc78e1 | 1031 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1032 | bdaddr_t *bdaddr, |
1033 | int state) | |
30dc78e1 JH |
1034 | { |
1035 | struct discovery_state *cache = &hdev->discovery; | |
1036 | struct inquiry_entry *e; | |
1037 | ||
6ed93dc6 | 1038 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1039 | |
1040 | list_for_each_entry(e, &cache->resolve, list) { | |
1041 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1042 | return e; | |
1043 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1044 | return e; | |
1045 | } | |
1046 | ||
1047 | return NULL; | |
1048 | } | |
1049 | ||
a3d4e20a | 1050 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1051 | struct inquiry_entry *ie) |
a3d4e20a JH |
1052 | { |
1053 | struct discovery_state *cache = &hdev->discovery; | |
1054 | struct list_head *pos = &cache->resolve; | |
1055 | struct inquiry_entry *p; | |
1056 | ||
1057 | list_del(&ie->list); | |
1058 | ||
1059 | list_for_each_entry(p, &cache->resolve, list) { | |
1060 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1061 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1062 | break; |
1063 | pos = &p->list; | |
1064 | } | |
1065 | ||
1066 | list_add(&ie->list, pos); | |
1067 | } | |
1068 | ||
af58925c MH |
1069 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
1070 | bool name_known) | |
1da177e4 | 1071 | { |
30883512 | 1072 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1073 | struct inquiry_entry *ie; |
af58925c | 1074 | u32 flags = 0; |
1da177e4 | 1075 | |
6ed93dc6 | 1076 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1077 | |
6928a924 | 1078 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
2b2fec4d | 1079 | |
af58925c MH |
1080 | if (!data->ssp_mode) |
1081 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1082 | |
70f23020 | 1083 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1084 | if (ie) { |
af58925c MH |
1085 | if (!ie->data.ssp_mode) |
1086 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 1087 | |
a3d4e20a | 1088 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1089 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1090 | ie->data.rssi = data->rssi; |
1091 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1092 | } | |
1093 | ||
561aafbc | 1094 | goto update; |
a3d4e20a | 1095 | } |
561aafbc JH |
1096 | |
1097 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 1098 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
1099 | if (!ie) { |
1100 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
1101 | goto done; | |
1102 | } | |
561aafbc JH |
1103 | |
1104 | list_add(&ie->all, &cache->all); | |
1105 | ||
1106 | if (name_known) { | |
1107 | ie->name_state = NAME_KNOWN; | |
1108 | } else { | |
1109 | ie->name_state = NAME_NOT_KNOWN; | |
1110 | list_add(&ie->list, &cache->unknown); | |
1111 | } | |
70f23020 | 1112 | |
561aafbc JH |
1113 | update: |
1114 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1115 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1116 | ie->name_state = NAME_KNOWN; |
1117 | list_del(&ie->list); | |
1da177e4 LT |
1118 | } |
1119 | ||
70f23020 AE |
1120 | memcpy(&ie->data, data, sizeof(*data)); |
1121 | ie->timestamp = jiffies; | |
1da177e4 | 1122 | cache->timestamp = jiffies; |
3175405b JH |
1123 | |
1124 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 1125 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 1126 | |
af58925c MH |
1127 | done: |
1128 | return flags; | |
1da177e4 LT |
1129 | } |
1130 | ||
1131 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1132 | { | |
30883512 | 1133 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1134 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1135 | struct inquiry_entry *e; | |
1136 | int copied = 0; | |
1137 | ||
561aafbc | 1138 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1139 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1140 | |
1141 | if (copied >= num) | |
1142 | break; | |
1143 | ||
1da177e4 LT |
1144 | bacpy(&info->bdaddr, &data->bdaddr); |
1145 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1146 | info->pscan_period_mode = data->pscan_period_mode; | |
1147 | info->pscan_mode = data->pscan_mode; | |
1148 | memcpy(info->dev_class, data->dev_class, 3); | |
1149 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1150 | |
1da177e4 | 1151 | info++; |
b57c1a56 | 1152 | copied++; |
1da177e4 LT |
1153 | } |
1154 | ||
1155 | BT_DBG("cache %p, copied %d", cache, copied); | |
1156 | return copied; | |
1157 | } | |
1158 | ||
a1d01db1 | 1159 | static int hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1160 | { |
1161 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1162 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1163 | struct hci_cp_inquiry cp; |
1164 | ||
1165 | BT_DBG("%s", hdev->name); | |
1166 | ||
1167 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
a1d01db1 | 1168 | return 0; |
1da177e4 LT |
1169 | |
1170 | /* Start Inquiry */ | |
1171 | memcpy(&cp.lap, &ir->lap, 3); | |
1172 | cp.length = ir->length; | |
1173 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1174 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
a1d01db1 JH |
1175 | |
1176 | return 0; | |
1da177e4 LT |
1177 | } |
1178 | ||
1179 | int hci_inquiry(void __user *arg) | |
1180 | { | |
1181 | __u8 __user *ptr = arg; | |
1182 | struct hci_inquiry_req ir; | |
1183 | struct hci_dev *hdev; | |
1184 | int err = 0, do_inquiry = 0, max_rsp; | |
1185 | long timeo; | |
1186 | __u8 *buf; | |
1187 | ||
1188 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1189 | return -EFAULT; | |
1190 | ||
5a08ecce AE |
1191 | hdev = hci_dev_get(ir.dev_id); |
1192 | if (!hdev) | |
1da177e4 LT |
1193 | return -ENODEV; |
1194 | ||
d7a5a11d | 1195 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1196 | err = -EBUSY; |
1197 | goto done; | |
1198 | } | |
1199 | ||
d7a5a11d | 1200 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1201 | err = -EOPNOTSUPP; |
1202 | goto done; | |
1203 | } | |
1204 | ||
5b69bef5 MH |
1205 | if (hdev->dev_type != HCI_BREDR) { |
1206 | err = -EOPNOTSUPP; | |
1207 | goto done; | |
1208 | } | |
1209 | ||
d7a5a11d | 1210 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1211 | err = -EOPNOTSUPP; |
1212 | goto done; | |
1213 | } | |
1214 | ||
09fd0de5 | 1215 | hci_dev_lock(hdev); |
8e87d142 | 1216 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1217 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1218 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1219 | do_inquiry = 1; |
1220 | } | |
09fd0de5 | 1221 | hci_dev_unlock(hdev); |
1da177e4 | 1222 | |
04837f64 | 1223 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1224 | |
1225 | if (do_inquiry) { | |
01178cd4 | 1226 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
4ebeee2d | 1227 | timeo, NULL); |
70f23020 AE |
1228 | if (err < 0) |
1229 | goto done; | |
3e13fa1e AG |
1230 | |
1231 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1232 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1233 | */ | |
74316201 | 1234 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
1235 | TASK_INTERRUPTIBLE)) |
1236 | return -EINTR; | |
70f23020 | 1237 | } |
1da177e4 | 1238 | |
8fc9ced3 GP |
1239 | /* for unlimited number of responses we will use buffer with |
1240 | * 255 entries | |
1241 | */ | |
1da177e4 LT |
1242 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1243 | ||
1244 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1245 | * copy it to the user space. | |
1246 | */ | |
01df8c31 | 1247 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1248 | if (!buf) { |
1da177e4 LT |
1249 | err = -ENOMEM; |
1250 | goto done; | |
1251 | } | |
1252 | ||
09fd0de5 | 1253 | hci_dev_lock(hdev); |
1da177e4 | 1254 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1255 | hci_dev_unlock(hdev); |
1da177e4 LT |
1256 | |
1257 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1258 | ||
1259 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1260 | ptr += sizeof(ir); | |
1261 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1262 | ir.num_rsp)) |
1da177e4 | 1263 | err = -EFAULT; |
8e87d142 | 1264 | } else |
1da177e4 LT |
1265 | err = -EFAULT; |
1266 | ||
1267 | kfree(buf); | |
1268 | ||
1269 | done: | |
1270 | hci_dev_put(hdev); | |
1271 | return err; | |
1272 | } | |
1273 | ||
cbed0ca1 | 1274 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1275 | { |
1da177e4 LT |
1276 | int ret = 0; |
1277 | ||
1da177e4 LT |
1278 | BT_DBG("%s %p", hdev->name, hdev); |
1279 | ||
b504430c | 1280 | hci_req_sync_lock(hdev); |
1da177e4 | 1281 | |
d7a5a11d | 1282 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
94324962 JH |
1283 | ret = -ENODEV; |
1284 | goto done; | |
1285 | } | |
1286 | ||
d7a5a11d MH |
1287 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1288 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
a5c8f270 MH |
1289 | /* Check for rfkill but allow the HCI setup stage to |
1290 | * proceed (which in itself doesn't cause any RF activity). | |
1291 | */ | |
d7a5a11d | 1292 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
a5c8f270 MH |
1293 | ret = -ERFKILL; |
1294 | goto done; | |
1295 | } | |
1296 | ||
1297 | /* Check for valid public address or a configured static | |
1298 | * random adddress, but let the HCI setup proceed to | |
1299 | * be able to determine if there is a public address | |
1300 | * or not. | |
1301 | * | |
c6beca0e MH |
1302 | * In case of user channel usage, it is not important |
1303 | * if a public address or static random address is | |
1304 | * available. | |
1305 | * | |
a5c8f270 MH |
1306 | * This check is only valid for BR/EDR controllers |
1307 | * since AMP controllers do not have an address. | |
1308 | */ | |
d7a5a11d | 1309 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
c6beca0e | 1310 | hdev->dev_type == HCI_BREDR && |
a5c8f270 MH |
1311 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1312 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1313 | ret = -EADDRNOTAVAIL; | |
1314 | goto done; | |
1315 | } | |
611b30f7 MH |
1316 | } |
1317 | ||
1da177e4 LT |
1318 | if (test_bit(HCI_UP, &hdev->flags)) { |
1319 | ret = -EALREADY; | |
1320 | goto done; | |
1321 | } | |
1322 | ||
1da177e4 LT |
1323 | if (hdev->open(hdev)) { |
1324 | ret = -EIO; | |
1325 | goto done; | |
1326 | } | |
1327 | ||
e9ca8bf1 | 1328 | set_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1329 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
4a3f95b7 | 1330 | |
f41c70c4 MH |
1331 | atomic_set(&hdev->cmd_cnt, 1); |
1332 | set_bit(HCI_INIT, &hdev->flags); | |
1333 | ||
d7a5a11d | 1334 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
e131d74a MH |
1335 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
1336 | ||
af202f84 MH |
1337 | if (hdev->setup) |
1338 | ret = hdev->setup(hdev); | |
f41c70c4 | 1339 | |
af202f84 MH |
1340 | /* The transport driver can set these quirks before |
1341 | * creating the HCI device or in its setup callback. | |
1342 | * | |
1343 | * In case any of them is set, the controller has to | |
1344 | * start up as unconfigured. | |
1345 | */ | |
eb1904f4 MH |
1346 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
1347 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
a1536da2 | 1348 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
f41c70c4 | 1349 | |
0ebca7d6 MH |
1350 | /* For an unconfigured controller it is required to |
1351 | * read at least the version information provided by | |
1352 | * the Read Local Version Information command. | |
1353 | * | |
1354 | * If the set_bdaddr driver callback is provided, then | |
1355 | * also the original Bluetooth public device address | |
1356 | * will be read using the Read BD Address command. | |
1357 | */ | |
d7a5a11d | 1358 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
0ebca7d6 | 1359 | ret = __hci_unconf_init(hdev); |
89bc22d2 MH |
1360 | } |
1361 | ||
d7a5a11d | 1362 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
9713c17b MH |
1363 | /* If public address change is configured, ensure that |
1364 | * the address gets programmed. If the driver does not | |
1365 | * support changing the public address, fail the power | |
1366 | * on procedure. | |
1367 | */ | |
1368 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
1369 | hdev->set_bdaddr) | |
24c457e2 MH |
1370 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
1371 | else | |
1372 | ret = -EADDRNOTAVAIL; | |
1373 | } | |
1374 | ||
f41c70c4 | 1375 | if (!ret) { |
d7a5a11d | 1376 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
98a63aaf | 1377 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
f41c70c4 | 1378 | ret = __hci_init(hdev); |
98a63aaf MH |
1379 | if (!ret && hdev->post_init) |
1380 | ret = hdev->post_init(hdev); | |
1381 | } | |
1da177e4 LT |
1382 | } |
1383 | ||
7e995b9e MH |
1384 | /* If the HCI Reset command is clearing all diagnostic settings, |
1385 | * then they need to be reprogrammed after the init procedure | |
1386 | * completed. | |
1387 | */ | |
1388 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
1389 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) | |
1390 | ret = hdev->set_diag(hdev, true); | |
1391 | ||
f41c70c4 MH |
1392 | clear_bit(HCI_INIT, &hdev->flags); |
1393 | ||
1da177e4 LT |
1394 | if (!ret) { |
1395 | hci_dev_hold(hdev); | |
a1536da2 | 1396 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
1da177e4 | 1397 | set_bit(HCI_UP, &hdev->flags); |
05fcd4c4 | 1398 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
6d5d2ee6 | 1399 | hci_leds_update_powered(hdev, true); |
d7a5a11d MH |
1400 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
1401 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
1402 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1403 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
2ff13894 | 1404 | hci_dev_test_flag(hdev, HCI_MGMT) && |
1514b892 | 1405 | hdev->dev_type == HCI_BREDR) { |
2ff13894 JH |
1406 | ret = __hci_req_hci_power_on(hdev); |
1407 | mgmt_power_on(hdev, ret); | |
56e5cb86 | 1408 | } |
8e87d142 | 1409 | } else { |
1da177e4 | 1410 | /* Init failed, cleanup */ |
3eff45ea | 1411 | flush_work(&hdev->tx_work); |
c347b765 | 1412 | flush_work(&hdev->cmd_work); |
b78752cc | 1413 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1414 | |
1415 | skb_queue_purge(&hdev->cmd_q); | |
1416 | skb_queue_purge(&hdev->rx_q); | |
1417 | ||
1418 | if (hdev->flush) | |
1419 | hdev->flush(hdev); | |
1420 | ||
1421 | if (hdev->sent_cmd) { | |
1422 | kfree_skb(hdev->sent_cmd); | |
1423 | hdev->sent_cmd = NULL; | |
1424 | } | |
1425 | ||
e9ca8bf1 | 1426 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1427 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1428 | |
1da177e4 | 1429 | hdev->close(hdev); |
fee746b0 | 1430 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
1431 | } |
1432 | ||
1433 | done: | |
b504430c | 1434 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1435 | return ret; |
1436 | } | |
1437 | ||
cbed0ca1 JH |
1438 | /* ---- HCI ioctl helpers ---- */ |
1439 | ||
1440 | int hci_dev_open(__u16 dev) | |
1441 | { | |
1442 | struct hci_dev *hdev; | |
1443 | int err; | |
1444 | ||
1445 | hdev = hci_dev_get(dev); | |
1446 | if (!hdev) | |
1447 | return -ENODEV; | |
1448 | ||
4a964404 | 1449 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
1450 | * up as user channel. Trying to bring them up as normal devices |
1451 | * will result into a failure. Only user channel operation is | |
1452 | * possible. | |
1453 | * | |
1454 | * When this function is called for a user channel, the flag | |
1455 | * HCI_USER_CHANNEL will be set first before attempting to | |
1456 | * open the device. | |
1457 | */ | |
d7a5a11d MH |
1458 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
1459 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
fee746b0 MH |
1460 | err = -EOPNOTSUPP; |
1461 | goto done; | |
1462 | } | |
1463 | ||
e1d08f40 JH |
1464 | /* We need to ensure that no other power on/off work is pending |
1465 | * before proceeding to call hci_dev_do_open. This is | |
1466 | * particularly important if the setup procedure has not yet | |
1467 | * completed. | |
1468 | */ | |
a69d8927 | 1469 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
e1d08f40 JH |
1470 | cancel_delayed_work(&hdev->power_off); |
1471 | ||
a5c8f270 MH |
1472 | /* After this call it is guaranteed that the setup procedure |
1473 | * has finished. This means that error conditions like RFKILL | |
1474 | * or no valid public or static random address apply. | |
1475 | */ | |
e1d08f40 JH |
1476 | flush_workqueue(hdev->req_workqueue); |
1477 | ||
12aa4f0a | 1478 | /* For controllers not using the management interface and that |
b6ae8457 | 1479 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
1480 | * so that pairing works for them. Once the management interface |
1481 | * is in use this bit will be cleared again and userspace has | |
1482 | * to explicitly enable it. | |
1483 | */ | |
d7a5a11d MH |
1484 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
1485 | !hci_dev_test_flag(hdev, HCI_MGMT)) | |
a1536da2 | 1486 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
12aa4f0a | 1487 | |
cbed0ca1 JH |
1488 | err = hci_dev_do_open(hdev); |
1489 | ||
fee746b0 | 1490 | done: |
cbed0ca1 | 1491 | hci_dev_put(hdev); |
cbed0ca1 JH |
1492 | return err; |
1493 | } | |
1494 | ||
d7347f3c JH |
1495 | /* This function requires the caller holds hdev->lock */ |
1496 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
1497 | { | |
1498 | struct hci_conn_params *p; | |
1499 | ||
f161dd41 JH |
1500 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
1501 | if (p->conn) { | |
1502 | hci_conn_drop(p->conn); | |
f8aaf9b6 | 1503 | hci_conn_put(p->conn); |
f161dd41 JH |
1504 | p->conn = NULL; |
1505 | } | |
d7347f3c | 1506 | list_del_init(&p->action); |
f161dd41 | 1507 | } |
d7347f3c JH |
1508 | |
1509 | BT_DBG("All LE pending actions cleared"); | |
1510 | } | |
1511 | ||
6b3cc1db | 1512 | int hci_dev_do_close(struct hci_dev *hdev) |
1da177e4 | 1513 | { |
acc649c6 MH |
1514 | bool auto_off; |
1515 | ||
1da177e4 LT |
1516 | BT_DBG("%s %p", hdev->name, hdev); |
1517 | ||
d24d8144 | 1518 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
867146a0 | 1519 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
d24d8144 | 1520 | test_bit(HCI_UP, &hdev->flags)) { |
a44fecbd THJA |
1521 | /* Execute vendor specific shutdown routine */ |
1522 | if (hdev->shutdown) | |
1523 | hdev->shutdown(hdev); | |
1524 | } | |
1525 | ||
78c04c0b VCG |
1526 | cancel_delayed_work(&hdev->power_off); |
1527 | ||
7df0f73e | 1528 | hci_request_cancel_all(hdev); |
b504430c | 1529 | hci_req_sync_lock(hdev); |
1da177e4 LT |
1530 | |
1531 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 1532 | cancel_delayed_work_sync(&hdev->cmd_timer); |
b504430c | 1533 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1534 | return 0; |
1535 | } | |
1536 | ||
6d5d2ee6 HK |
1537 | hci_leds_update_powered(hdev, false); |
1538 | ||
3eff45ea GP |
1539 | /* Flush RX and TX works */ |
1540 | flush_work(&hdev->tx_work); | |
b78752cc | 1541 | flush_work(&hdev->rx_work); |
1da177e4 | 1542 | |
16ab91ab | 1543 | if (hdev->discov_timeout > 0) { |
16ab91ab | 1544 | hdev->discov_timeout = 0; |
a358dc11 MH |
1545 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
1546 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
16ab91ab JH |
1547 | } |
1548 | ||
a69d8927 | 1549 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
7d78525d JH |
1550 | cancel_delayed_work(&hdev->service_cache); |
1551 | ||
d7a5a11d | 1552 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
4518bb0f | 1553 | cancel_delayed_work_sync(&hdev->rpa_expired); |
7ba8b4be | 1554 | |
76727c02 JH |
1555 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1556 | * ensuring the workqueue is empty up front. | |
1557 | */ | |
1558 | drain_workqueue(hdev->workqueue); | |
1559 | ||
09fd0de5 | 1560 | hci_dev_lock(hdev); |
1aeb9c65 | 1561 | |
8f502f84 JH |
1562 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
1563 | ||
acc649c6 MH |
1564 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
1565 | ||
2ff13894 JH |
1566 | if (!auto_off && hdev->dev_type == HCI_BREDR && |
1567 | hci_dev_test_flag(hdev, HCI_MGMT)) | |
1568 | __mgmt_power_off(hdev); | |
1aeb9c65 | 1569 | |
1f9b9a5d | 1570 | hci_inquiry_cache_flush(hdev); |
d7347f3c | 1571 | hci_pend_le_actions_clear(hdev); |
f161dd41 | 1572 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1573 | hci_dev_unlock(hdev); |
1da177e4 | 1574 | |
64dae967 MH |
1575 | smp_unregister(hdev); |
1576 | ||
05fcd4c4 | 1577 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
1da177e4 LT |
1578 | |
1579 | if (hdev->flush) | |
1580 | hdev->flush(hdev); | |
1581 | ||
1582 | /* Reset device */ | |
1583 | skb_queue_purge(&hdev->cmd_q); | |
1584 | atomic_set(&hdev->cmd_cnt, 1); | |
acc649c6 MH |
1585 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
1586 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
1da177e4 | 1587 | set_bit(HCI_INIT, &hdev->flags); |
4ebeee2d | 1588 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL); |
1da177e4 LT |
1589 | clear_bit(HCI_INIT, &hdev->flags); |
1590 | } | |
1591 | ||
c347b765 GP |
1592 | /* flush cmd work */ |
1593 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1594 | |
1595 | /* Drop queues */ | |
1596 | skb_queue_purge(&hdev->rx_q); | |
1597 | skb_queue_purge(&hdev->cmd_q); | |
1598 | skb_queue_purge(&hdev->raw_q); | |
1599 | ||
1600 | /* Drop last sent command */ | |
1601 | if (hdev->sent_cmd) { | |
65cc2b49 | 1602 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
1603 | kfree_skb(hdev->sent_cmd); |
1604 | hdev->sent_cmd = NULL; | |
1605 | } | |
1606 | ||
e9ca8bf1 | 1607 | clear_bit(HCI_RUNNING, &hdev->flags); |
05fcd4c4 | 1608 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
4a3f95b7 | 1609 | |
1da177e4 LT |
1610 | /* After this point our queues are empty |
1611 | * and no tasks are scheduled. */ | |
1612 | hdev->close(hdev); | |
1613 | ||
35b973c9 | 1614 | /* Clear flags */ |
fee746b0 | 1615 | hdev->flags &= BIT(HCI_RAW); |
eacb44df | 1616 | hci_dev_clear_volatile_flags(hdev); |
35b973c9 | 1617 | |
ced5c338 | 1618 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1619 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1620 | |
e59fda8d | 1621 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1622 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 1623 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 1624 | |
b504430c | 1625 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1626 | |
1627 | hci_dev_put(hdev); | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | int hci_dev_close(__u16 dev) | |
1632 | { | |
1633 | struct hci_dev *hdev; | |
1634 | int err; | |
1635 | ||
70f23020 AE |
1636 | hdev = hci_dev_get(dev); |
1637 | if (!hdev) | |
1da177e4 | 1638 | return -ENODEV; |
8ee56540 | 1639 | |
d7a5a11d | 1640 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1641 | err = -EBUSY; |
1642 | goto done; | |
1643 | } | |
1644 | ||
a69d8927 | 1645 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
8ee56540 MH |
1646 | cancel_delayed_work(&hdev->power_off); |
1647 | ||
1da177e4 | 1648 | err = hci_dev_do_close(hdev); |
8ee56540 | 1649 | |
0736cfa8 | 1650 | done: |
1da177e4 LT |
1651 | hci_dev_put(hdev); |
1652 | return err; | |
1653 | } | |
1654 | ||
5c912495 | 1655 | static int hci_dev_do_reset(struct hci_dev *hdev) |
1da177e4 | 1656 | { |
5c912495 | 1657 | int ret; |
1da177e4 | 1658 | |
5c912495 | 1659 | BT_DBG("%s %p", hdev->name, hdev); |
1da177e4 | 1660 | |
b504430c | 1661 | hci_req_sync_lock(hdev); |
1da177e4 | 1662 | |
1da177e4 LT |
1663 | /* Drop queues */ |
1664 | skb_queue_purge(&hdev->rx_q); | |
1665 | skb_queue_purge(&hdev->cmd_q); | |
1666 | ||
76727c02 JH |
1667 | /* Avoid potential lockdep warnings from the *_flush() calls by |
1668 | * ensuring the workqueue is empty up front. | |
1669 | */ | |
1670 | drain_workqueue(hdev->workqueue); | |
1671 | ||
09fd0de5 | 1672 | hci_dev_lock(hdev); |
1f9b9a5d | 1673 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1674 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1675 | hci_dev_unlock(hdev); |
1da177e4 LT |
1676 | |
1677 | if (hdev->flush) | |
1678 | hdev->flush(hdev); | |
1679 | ||
8e87d142 | 1680 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1681 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 1682 | |
4ebeee2d | 1683 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL); |
1da177e4 | 1684 | |
b504430c | 1685 | hci_req_sync_unlock(hdev); |
1da177e4 LT |
1686 | return ret; |
1687 | } | |
1688 | ||
5c912495 MH |
1689 | int hci_dev_reset(__u16 dev) |
1690 | { | |
1691 | struct hci_dev *hdev; | |
1692 | int err; | |
1693 | ||
1694 | hdev = hci_dev_get(dev); | |
1695 | if (!hdev) | |
1696 | return -ENODEV; | |
1697 | ||
1698 | if (!test_bit(HCI_UP, &hdev->flags)) { | |
1699 | err = -ENETDOWN; | |
1700 | goto done; | |
1701 | } | |
1702 | ||
d7a5a11d | 1703 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
5c912495 MH |
1704 | err = -EBUSY; |
1705 | goto done; | |
1706 | } | |
1707 | ||
d7a5a11d | 1708 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
5c912495 MH |
1709 | err = -EOPNOTSUPP; |
1710 | goto done; | |
1711 | } | |
1712 | ||
1713 | err = hci_dev_do_reset(hdev); | |
1714 | ||
1715 | done: | |
1716 | hci_dev_put(hdev); | |
1717 | return err; | |
1718 | } | |
1719 | ||
1da177e4 LT |
1720 | int hci_dev_reset_stat(__u16 dev) |
1721 | { | |
1722 | struct hci_dev *hdev; | |
1723 | int ret = 0; | |
1724 | ||
70f23020 AE |
1725 | hdev = hci_dev_get(dev); |
1726 | if (!hdev) | |
1da177e4 LT |
1727 | return -ENODEV; |
1728 | ||
d7a5a11d | 1729 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1730 | ret = -EBUSY; |
1731 | goto done; | |
1732 | } | |
1733 | ||
d7a5a11d | 1734 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1735 | ret = -EOPNOTSUPP; |
1736 | goto done; | |
1737 | } | |
1738 | ||
1da177e4 LT |
1739 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1740 | ||
0736cfa8 | 1741 | done: |
1da177e4 | 1742 | hci_dev_put(hdev); |
1da177e4 LT |
1743 | return ret; |
1744 | } | |
1745 | ||
123abc08 JH |
1746 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
1747 | { | |
bc6d2d04 | 1748 | bool conn_changed, discov_changed; |
123abc08 JH |
1749 | |
1750 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
1751 | ||
1752 | if ((scan & SCAN_PAGE)) | |
238be788 MH |
1753 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
1754 | HCI_CONNECTABLE); | |
123abc08 | 1755 | else |
a69d8927 MH |
1756 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
1757 | HCI_CONNECTABLE); | |
123abc08 | 1758 | |
bc6d2d04 | 1759 | if ((scan & SCAN_INQUIRY)) { |
238be788 MH |
1760 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
1761 | HCI_DISCOVERABLE); | |
bc6d2d04 | 1762 | } else { |
a358dc11 | 1763 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
a69d8927 MH |
1764 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
1765 | HCI_DISCOVERABLE); | |
bc6d2d04 JH |
1766 | } |
1767 | ||
d7a5a11d | 1768 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
123abc08 JH |
1769 | return; |
1770 | ||
bc6d2d04 JH |
1771 | if (conn_changed || discov_changed) { |
1772 | /* In case this was disabled through mgmt */ | |
a1536da2 | 1773 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
bc6d2d04 | 1774 | |
d7a5a11d | 1775 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
cab054ab | 1776 | hci_req_update_adv_data(hdev, hdev->cur_adv_instance); |
bc6d2d04 | 1777 | |
123abc08 | 1778 | mgmt_new_settings(hdev); |
bc6d2d04 | 1779 | } |
123abc08 JH |
1780 | } |
1781 | ||
1da177e4 LT |
1782 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
1783 | { | |
1784 | struct hci_dev *hdev; | |
1785 | struct hci_dev_req dr; | |
1786 | int err = 0; | |
1787 | ||
1788 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1789 | return -EFAULT; | |
1790 | ||
70f23020 AE |
1791 | hdev = hci_dev_get(dr.dev_id); |
1792 | if (!hdev) | |
1da177e4 LT |
1793 | return -ENODEV; |
1794 | ||
d7a5a11d | 1795 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
0736cfa8 MH |
1796 | err = -EBUSY; |
1797 | goto done; | |
1798 | } | |
1799 | ||
d7a5a11d | 1800 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
fee746b0 MH |
1801 | err = -EOPNOTSUPP; |
1802 | goto done; | |
1803 | } | |
1804 | ||
5b69bef5 MH |
1805 | if (hdev->dev_type != HCI_BREDR) { |
1806 | err = -EOPNOTSUPP; | |
1807 | goto done; | |
1808 | } | |
1809 | ||
d7a5a11d | 1810 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
56f87901 JH |
1811 | err = -EOPNOTSUPP; |
1812 | goto done; | |
1813 | } | |
1814 | ||
1da177e4 LT |
1815 | switch (cmd) { |
1816 | case HCISETAUTH: | |
01178cd4 | 1817 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1818 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1819 | break; |
1820 | ||
1821 | case HCISETENCRYPT: | |
1822 | if (!lmp_encrypt_capable(hdev)) { | |
1823 | err = -EOPNOTSUPP; | |
1824 | break; | |
1825 | } | |
1826 | ||
1827 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1828 | /* Auth must be enabled first */ | |
01178cd4 | 1829 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
4ebeee2d | 1830 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1831 | if (err) |
1832 | break; | |
1833 | } | |
1834 | ||
01178cd4 | 1835 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
4ebeee2d | 1836 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1837 | break; |
1838 | ||
1839 | case HCISETSCAN: | |
01178cd4 | 1840 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
4ebeee2d | 1841 | HCI_INIT_TIMEOUT, NULL); |
91a668b0 | 1842 | |
bc6d2d04 JH |
1843 | /* Ensure that the connectable and discoverable states |
1844 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 1845 | */ |
123abc08 JH |
1846 | if (!err) |
1847 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
1848 | break; |
1849 | ||
1da177e4 | 1850 | case HCISETLINKPOL: |
01178cd4 | 1851 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
4ebeee2d | 1852 | HCI_INIT_TIMEOUT, NULL); |
1da177e4 LT |
1853 | break; |
1854 | ||
1855 | case HCISETLINKMODE: | |
e4e8e37c MH |
1856 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1857 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1858 | break; | |
1859 | ||
1860 | case HCISETPTYPE: | |
1861 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1862 | break; |
1863 | ||
1864 | case HCISETACLMTU: | |
e4e8e37c MH |
1865 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1866 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1867 | break; |
1868 | ||
1869 | case HCISETSCOMTU: | |
e4e8e37c MH |
1870 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1871 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1872 | break; |
1873 | ||
1874 | default: | |
1875 | err = -EINVAL; | |
1876 | break; | |
1877 | } | |
e4e8e37c | 1878 | |
0736cfa8 | 1879 | done: |
1da177e4 LT |
1880 | hci_dev_put(hdev); |
1881 | return err; | |
1882 | } | |
1883 | ||
1884 | int hci_get_dev_list(void __user *arg) | |
1885 | { | |
8035ded4 | 1886 | struct hci_dev *hdev; |
1da177e4 LT |
1887 | struct hci_dev_list_req *dl; |
1888 | struct hci_dev_req *dr; | |
1da177e4 LT |
1889 | int n = 0, size, err; |
1890 | __u16 dev_num; | |
1891 | ||
1892 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1893 | return -EFAULT; | |
1894 | ||
1895 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1896 | return -EINVAL; | |
1897 | ||
1898 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1899 | ||
70f23020 AE |
1900 | dl = kzalloc(size, GFP_KERNEL); |
1901 | if (!dl) | |
1da177e4 LT |
1902 | return -ENOMEM; |
1903 | ||
1904 | dr = dl->dev_req; | |
1905 | ||
f20d09d5 | 1906 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1907 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 1908 | unsigned long flags = hdev->flags; |
c542a06c | 1909 | |
2e84d8db MH |
1910 | /* When the auto-off is configured it means the transport |
1911 | * is running, but in that case still indicate that the | |
1912 | * device is actually down. | |
1913 | */ | |
d7a5a11d | 1914 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db | 1915 | flags &= ~BIT(HCI_UP); |
c542a06c | 1916 | |
1da177e4 | 1917 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 1918 | (dr + n)->dev_opt = flags; |
c542a06c | 1919 | |
1da177e4 LT |
1920 | if (++n >= dev_num) |
1921 | break; | |
1922 | } | |
f20d09d5 | 1923 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1924 | |
1925 | dl->dev_num = n; | |
1926 | size = sizeof(*dl) + n * sizeof(*dr); | |
1927 | ||
1928 | err = copy_to_user(arg, dl, size); | |
1929 | kfree(dl); | |
1930 | ||
1931 | return err ? -EFAULT : 0; | |
1932 | } | |
1933 | ||
1934 | int hci_get_dev_info(void __user *arg) | |
1935 | { | |
1936 | struct hci_dev *hdev; | |
1937 | struct hci_dev_info di; | |
2e84d8db | 1938 | unsigned long flags; |
1da177e4 LT |
1939 | int err = 0; |
1940 | ||
1941 | if (copy_from_user(&di, arg, sizeof(di))) | |
1942 | return -EFAULT; | |
1943 | ||
70f23020 AE |
1944 | hdev = hci_dev_get(di.dev_id); |
1945 | if (!hdev) | |
1da177e4 LT |
1946 | return -ENODEV; |
1947 | ||
2e84d8db MH |
1948 | /* When the auto-off is configured it means the transport |
1949 | * is running, but in that case still indicate that the | |
1950 | * device is actually down. | |
1951 | */ | |
d7a5a11d | 1952 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
2e84d8db MH |
1953 | flags = hdev->flags & ~BIT(HCI_UP); |
1954 | else | |
1955 | flags = hdev->flags; | |
c542a06c | 1956 | |
1da177e4 LT |
1957 | strcpy(di.name, hdev->name); |
1958 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1959 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 1960 | di.flags = flags; |
1da177e4 | 1961 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
1962 | if (lmp_bredr_capable(hdev)) { |
1963 | di.acl_mtu = hdev->acl_mtu; | |
1964 | di.acl_pkts = hdev->acl_pkts; | |
1965 | di.sco_mtu = hdev->sco_mtu; | |
1966 | di.sco_pkts = hdev->sco_pkts; | |
1967 | } else { | |
1968 | di.acl_mtu = hdev->le_mtu; | |
1969 | di.acl_pkts = hdev->le_pkts; | |
1970 | di.sco_mtu = 0; | |
1971 | di.sco_pkts = 0; | |
1972 | } | |
1da177e4 LT |
1973 | di.link_policy = hdev->link_policy; |
1974 | di.link_mode = hdev->link_mode; | |
1975 | ||
1976 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1977 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1978 | ||
1979 | if (copy_to_user(arg, &di, sizeof(di))) | |
1980 | err = -EFAULT; | |
1981 | ||
1982 | hci_dev_put(hdev); | |
1983 | ||
1984 | return err; | |
1985 | } | |
1986 | ||
1987 | /* ---- Interface to HCI drivers ---- */ | |
1988 | ||
611b30f7 MH |
1989 | static int hci_rfkill_set_block(void *data, bool blocked) |
1990 | { | |
1991 | struct hci_dev *hdev = data; | |
1992 | ||
1993 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1994 | ||
d7a5a11d | 1995 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
1996 | return -EBUSY; |
1997 | ||
5e130367 | 1998 | if (blocked) { |
a1536da2 | 1999 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
d7a5a11d MH |
2000 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
2001 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
bf543036 | 2002 | hci_dev_do_close(hdev); |
5e130367 | 2003 | } else { |
a358dc11 | 2004 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
1025c04c | 2005 | } |
611b30f7 MH |
2006 | |
2007 | return 0; | |
2008 | } | |
2009 | ||
2010 | static const struct rfkill_ops hci_rfkill_ops = { | |
2011 | .set_block = hci_rfkill_set_block, | |
2012 | }; | |
2013 | ||
ab81cbf9 JH |
2014 | static void hci_power_on(struct work_struct *work) |
2015 | { | |
2016 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2017 | int err; |
ab81cbf9 JH |
2018 | |
2019 | BT_DBG("%s", hdev->name); | |
2020 | ||
2ff13894 JH |
2021 | if (test_bit(HCI_UP, &hdev->flags) && |
2022 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
2023 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
d82142a8 | 2024 | cancel_delayed_work(&hdev->power_off); |
2ff13894 JH |
2025 | hci_req_sync_lock(hdev); |
2026 | err = __hci_req_hci_power_on(hdev); | |
2027 | hci_req_sync_unlock(hdev); | |
2028 | mgmt_power_on(hdev, err); | |
2029 | return; | |
2030 | } | |
2031 | ||
cbed0ca1 | 2032 | err = hci_dev_do_open(hdev); |
96570ffc | 2033 | if (err < 0) { |
3ad67582 | 2034 | hci_dev_lock(hdev); |
96570ffc | 2035 | mgmt_set_powered_failed(hdev, err); |
3ad67582 | 2036 | hci_dev_unlock(hdev); |
ab81cbf9 | 2037 | return; |
96570ffc | 2038 | } |
ab81cbf9 | 2039 | |
a5c8f270 MH |
2040 | /* During the HCI setup phase, a few error conditions are |
2041 | * ignored and they need to be checked now. If they are still | |
2042 | * valid, it is important to turn the device back off. | |
2043 | */ | |
d7a5a11d MH |
2044 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
2045 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
a5c8f270 MH |
2046 | (hdev->dev_type == HCI_BREDR && |
2047 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2048 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
a358dc11 | 2049 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
bf543036 | 2050 | hci_dev_do_close(hdev); |
d7a5a11d | 2051 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
19202573 JH |
2052 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2053 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2054 | } |
ab81cbf9 | 2055 | |
a69d8927 | 2056 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
4a964404 MH |
2057 | /* For unconfigured devices, set the HCI_RAW flag |
2058 | * so that userspace can easily identify them. | |
4a964404 | 2059 | */ |
d7a5a11d | 2060 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
4a964404 | 2061 | set_bit(HCI_RAW, &hdev->flags); |
0602a8ad MH |
2062 | |
2063 | /* For fully configured devices, this will send | |
2064 | * the Index Added event. For unconfigured devices, | |
2065 | * it will send Unconfigued Index Added event. | |
2066 | * | |
2067 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2068 | * and no event will be send. | |
2069 | */ | |
2070 | mgmt_index_added(hdev); | |
a69d8927 | 2071 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
5ea234d3 MH |
2072 | /* When the controller is now configured, then it |
2073 | * is important to clear the HCI_RAW flag. | |
2074 | */ | |
d7a5a11d | 2075 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
5ea234d3 MH |
2076 | clear_bit(HCI_RAW, &hdev->flags); |
2077 | ||
d603b76b MH |
2078 | /* Powering on the controller with HCI_CONFIG set only |
2079 | * happens with the transition from unconfigured to | |
2080 | * configured. This will send the Index Added event. | |
2081 | */ | |
744cf19e | 2082 | mgmt_index_added(hdev); |
fee746b0 | 2083 | } |
ab81cbf9 JH |
2084 | } |
2085 | ||
2086 | static void hci_power_off(struct work_struct *work) | |
2087 | { | |
3243553f | 2088 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2089 | power_off.work); |
ab81cbf9 JH |
2090 | |
2091 | BT_DBG("%s", hdev->name); | |
2092 | ||
8ee56540 | 2093 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2094 | } |
2095 | ||
c7741d16 MH |
2096 | static void hci_error_reset(struct work_struct *work) |
2097 | { | |
2098 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); | |
2099 | ||
2100 | BT_DBG("%s", hdev->name); | |
2101 | ||
2102 | if (hdev->hw_error) | |
2103 | hdev->hw_error(hdev, hdev->hw_error_code); | |
2104 | else | |
2105 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, | |
2106 | hdev->hw_error_code); | |
2107 | ||
2108 | if (hci_dev_do_close(hdev)) | |
2109 | return; | |
2110 | ||
c7741d16 MH |
2111 | hci_dev_do_open(hdev); |
2112 | } | |
2113 | ||
35f7498a | 2114 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2115 | { |
4821002c | 2116 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2117 | |
4821002c JH |
2118 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2119 | list_del(&uuid->list); | |
2aeb9a1a JH |
2120 | kfree(uuid); |
2121 | } | |
2aeb9a1a JH |
2122 | } |
2123 | ||
35f7498a | 2124 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 | 2125 | { |
0378b597 | 2126 | struct link_key *key; |
55ed8ca1 | 2127 | |
0378b597 JH |
2128 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
2129 | list_del_rcu(&key->list); | |
2130 | kfree_rcu(key, rcu); | |
55ed8ca1 | 2131 | } |
55ed8ca1 JH |
2132 | } |
2133 | ||
35f7498a | 2134 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf | 2135 | { |
970d0f1b | 2136 | struct smp_ltk *k; |
b899efaf | 2137 | |
970d0f1b JH |
2138 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
2139 | list_del_rcu(&k->list); | |
2140 | kfree_rcu(k, rcu); | |
b899efaf | 2141 | } |
b899efaf VCG |
2142 | } |
2143 | ||
970c4e46 JH |
2144 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2145 | { | |
adae20cb | 2146 | struct smp_irk *k; |
970c4e46 | 2147 | |
adae20cb JH |
2148 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
2149 | list_del_rcu(&k->list); | |
2150 | kfree_rcu(k, rcu); | |
970c4e46 JH |
2151 | } |
2152 | } | |
2153 | ||
55ed8ca1 JH |
2154 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2155 | { | |
8035ded4 | 2156 | struct link_key *k; |
55ed8ca1 | 2157 | |
0378b597 JH |
2158 | rcu_read_lock(); |
2159 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { | |
2160 | if (bacmp(bdaddr, &k->bdaddr) == 0) { | |
2161 | rcu_read_unlock(); | |
55ed8ca1 | 2162 | return k; |
0378b597 JH |
2163 | } |
2164 | } | |
2165 | rcu_read_unlock(); | |
55ed8ca1 JH |
2166 | |
2167 | return NULL; | |
2168 | } | |
2169 | ||
745c0ce3 | 2170 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2171 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2172 | { |
2173 | /* Legacy key */ | |
2174 | if (key_type < 0x03) | |
745c0ce3 | 2175 | return true; |
d25e28ab JH |
2176 | |
2177 | /* Debug keys are insecure so don't store them persistently */ | |
2178 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2179 | return false; |
d25e28ab JH |
2180 | |
2181 | /* Changed combination key and there's no previous one */ | |
2182 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2183 | return false; |
d25e28ab JH |
2184 | |
2185 | /* Security mode 3 case */ | |
2186 | if (!conn) | |
745c0ce3 | 2187 | return true; |
d25e28ab | 2188 | |
e3befab9 JH |
2189 | /* BR/EDR key derived using SC from an LE link */ |
2190 | if (conn->type == LE_LINK) | |
2191 | return true; | |
2192 | ||
d25e28ab JH |
2193 | /* Neither local nor remote side had no-bonding as requirement */ |
2194 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2195 | return true; |
d25e28ab JH |
2196 | |
2197 | /* Local side had dedicated bonding as requirement */ | |
2198 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2199 | return true; |
d25e28ab JH |
2200 | |
2201 | /* Remote side had dedicated bonding as requirement */ | |
2202 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2203 | return true; |
d25e28ab JH |
2204 | |
2205 | /* If none of the above criteria match, then don't store the key | |
2206 | * persistently */ | |
745c0ce3 | 2207 | return false; |
d25e28ab JH |
2208 | } |
2209 | ||
e804d25d | 2210 | static u8 ltk_role(u8 type) |
98a0b845 | 2211 | { |
e804d25d JH |
2212 | if (type == SMP_LTK) |
2213 | return HCI_ROLE_MASTER; | |
98a0b845 | 2214 | |
e804d25d | 2215 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
2216 | } |
2217 | ||
f3a73d97 JH |
2218 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2219 | u8 addr_type, u8 role) | |
75d262c2 | 2220 | { |
c9839a11 | 2221 | struct smp_ltk *k; |
75d262c2 | 2222 | |
970d0f1b JH |
2223 | rcu_read_lock(); |
2224 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
5378bc56 JH |
2225 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
2226 | continue; | |
2227 | ||
923e2414 | 2228 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
970d0f1b | 2229 | rcu_read_unlock(); |
75d262c2 | 2230 | return k; |
970d0f1b JH |
2231 | } |
2232 | } | |
2233 | rcu_read_unlock(); | |
75d262c2 VCG |
2234 | |
2235 | return NULL; | |
2236 | } | |
75d262c2 | 2237 | |
970c4e46 JH |
2238 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2239 | { | |
2240 | struct smp_irk *irk; | |
2241 | ||
adae20cb JH |
2242 | rcu_read_lock(); |
2243 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
2244 | if (!bacmp(&irk->rpa, rpa)) { | |
2245 | rcu_read_unlock(); | |
970c4e46 | 2246 | return irk; |
adae20cb | 2247 | } |
970c4e46 JH |
2248 | } |
2249 | ||
adae20cb | 2250 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
defce9e8 | 2251 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 | 2252 | bacpy(&irk->rpa, rpa); |
adae20cb | 2253 | rcu_read_unlock(); |
970c4e46 JH |
2254 | return irk; |
2255 | } | |
2256 | } | |
adae20cb | 2257 | rcu_read_unlock(); |
970c4e46 JH |
2258 | |
2259 | return NULL; | |
2260 | } | |
2261 | ||
2262 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2263 | u8 addr_type) | |
2264 | { | |
2265 | struct smp_irk *irk; | |
2266 | ||
6cfc9988 JH |
2267 | /* Identity Address must be public or static random */ |
2268 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2269 | return NULL; | |
2270 | ||
adae20cb JH |
2271 | rcu_read_lock(); |
2272 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { | |
970c4e46 | 2273 | if (addr_type == irk->addr_type && |
adae20cb JH |
2274 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
2275 | rcu_read_unlock(); | |
970c4e46 | 2276 | return irk; |
adae20cb | 2277 | } |
970c4e46 | 2278 | } |
adae20cb | 2279 | rcu_read_unlock(); |
970c4e46 JH |
2280 | |
2281 | return NULL; | |
2282 | } | |
2283 | ||
567fa2aa | 2284 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
2285 | bdaddr_t *bdaddr, u8 *val, u8 type, |
2286 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
2287 | { |
2288 | struct link_key *key, *old_key; | |
745c0ce3 | 2289 | u8 old_key_type; |
55ed8ca1 JH |
2290 | |
2291 | old_key = hci_find_link_key(hdev, bdaddr); | |
2292 | if (old_key) { | |
2293 | old_key_type = old_key->type; | |
2294 | key = old_key; | |
2295 | } else { | |
12adcf3a | 2296 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2297 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 2298 | if (!key) |
567fa2aa | 2299 | return NULL; |
0378b597 | 2300 | list_add_rcu(&key->list, &hdev->link_keys); |
55ed8ca1 JH |
2301 | } |
2302 | ||
6ed93dc6 | 2303 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2304 | |
d25e28ab JH |
2305 | /* Some buggy controller combinations generate a changed |
2306 | * combination key for legacy pairing even when there's no | |
2307 | * previous key */ | |
2308 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2309 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2310 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2311 | if (conn) |
2312 | conn->key_type = type; | |
2313 | } | |
d25e28ab | 2314 | |
55ed8ca1 | 2315 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2316 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2317 | key->pin_len = pin_len; |
2318 | ||
b6020ba0 | 2319 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2320 | key->type = old_key_type; |
4748fed2 JH |
2321 | else |
2322 | key->type = type; | |
2323 | ||
7652ff6a JH |
2324 | if (persistent) |
2325 | *persistent = hci_persistent_key(hdev, conn, type, | |
2326 | old_key_type); | |
4df378a1 | 2327 | |
567fa2aa | 2328 | return key; |
55ed8ca1 JH |
2329 | } |
2330 | ||
ca9142b8 | 2331 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 2332 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 2333 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 2334 | { |
c9839a11 | 2335 | struct smp_ltk *key, *old_key; |
e804d25d | 2336 | u8 role = ltk_role(type); |
75d262c2 | 2337 | |
f3a73d97 | 2338 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
c9839a11 | 2339 | if (old_key) |
75d262c2 | 2340 | key = old_key; |
c9839a11 | 2341 | else { |
0a14ab41 | 2342 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 2343 | if (!key) |
ca9142b8 | 2344 | return NULL; |
970d0f1b | 2345 | list_add_rcu(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2346 | } |
2347 | ||
75d262c2 | 2348 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2349 | key->bdaddr_type = addr_type; |
2350 | memcpy(key->val, tk, sizeof(key->val)); | |
2351 | key->authenticated = authenticated; | |
2352 | key->ediv = ediv; | |
fe39c7b2 | 2353 | key->rand = rand; |
c9839a11 VCG |
2354 | key->enc_size = enc_size; |
2355 | key->type = type; | |
75d262c2 | 2356 | |
ca9142b8 | 2357 | return key; |
75d262c2 VCG |
2358 | } |
2359 | ||
ca9142b8 JH |
2360 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2361 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
2362 | { |
2363 | struct smp_irk *irk; | |
2364 | ||
2365 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2366 | if (!irk) { | |
2367 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2368 | if (!irk) | |
ca9142b8 | 2369 | return NULL; |
970c4e46 JH |
2370 | |
2371 | bacpy(&irk->bdaddr, bdaddr); | |
2372 | irk->addr_type = addr_type; | |
2373 | ||
adae20cb | 2374 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
970c4e46 JH |
2375 | } |
2376 | ||
2377 | memcpy(irk->val, val, 16); | |
2378 | bacpy(&irk->rpa, rpa); | |
2379 | ||
ca9142b8 | 2380 | return irk; |
970c4e46 JH |
2381 | } |
2382 | ||
55ed8ca1 JH |
2383 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2384 | { | |
2385 | struct link_key *key; | |
2386 | ||
2387 | key = hci_find_link_key(hdev, bdaddr); | |
2388 | if (!key) | |
2389 | return -ENOENT; | |
2390 | ||
6ed93dc6 | 2391 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 | 2392 | |
0378b597 JH |
2393 | list_del_rcu(&key->list); |
2394 | kfree_rcu(key, rcu); | |
55ed8ca1 JH |
2395 | |
2396 | return 0; | |
2397 | } | |
2398 | ||
e0b2b27e | 2399 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf | 2400 | { |
970d0f1b | 2401 | struct smp_ltk *k; |
c51ffa0b | 2402 | int removed = 0; |
b899efaf | 2403 | |
970d0f1b | 2404 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
e0b2b27e | 2405 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2406 | continue; |
2407 | ||
6ed93dc6 | 2408 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf | 2409 | |
970d0f1b JH |
2410 | list_del_rcu(&k->list); |
2411 | kfree_rcu(k, rcu); | |
c51ffa0b | 2412 | removed++; |
b899efaf VCG |
2413 | } |
2414 | ||
c51ffa0b | 2415 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2416 | } |
2417 | ||
a7ec7338 JH |
2418 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
2419 | { | |
adae20cb | 2420 | struct smp_irk *k; |
a7ec7338 | 2421 | |
adae20cb | 2422 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
2423 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
2424 | continue; | |
2425 | ||
2426 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
2427 | ||
adae20cb JH |
2428 | list_del_rcu(&k->list); |
2429 | kfree_rcu(k, rcu); | |
a7ec7338 JH |
2430 | } |
2431 | } | |
2432 | ||
55e76b38 JH |
2433 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
2434 | { | |
2435 | struct smp_ltk *k; | |
4ba9faf3 | 2436 | struct smp_irk *irk; |
55e76b38 JH |
2437 | u8 addr_type; |
2438 | ||
2439 | if (type == BDADDR_BREDR) { | |
2440 | if (hci_find_link_key(hdev, bdaddr)) | |
2441 | return true; | |
2442 | return false; | |
2443 | } | |
2444 | ||
2445 | /* Convert to HCI addr type which struct smp_ltk uses */ | |
2446 | if (type == BDADDR_LE_PUBLIC) | |
2447 | addr_type = ADDR_LE_DEV_PUBLIC; | |
2448 | else | |
2449 | addr_type = ADDR_LE_DEV_RANDOM; | |
2450 | ||
4ba9faf3 JH |
2451 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
2452 | if (irk) { | |
2453 | bdaddr = &irk->bdaddr; | |
2454 | addr_type = irk->addr_type; | |
2455 | } | |
2456 | ||
55e76b38 JH |
2457 | rcu_read_lock(); |
2458 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { | |
87c8b28d JH |
2459 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
2460 | rcu_read_unlock(); | |
55e76b38 | 2461 | return true; |
87c8b28d | 2462 | } |
55e76b38 JH |
2463 | } |
2464 | rcu_read_unlock(); | |
2465 | ||
2466 | return false; | |
2467 | } | |
2468 | ||
6bd32326 | 2469 | /* HCI command timer function */ |
65cc2b49 | 2470 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 2471 | { |
65cc2b49 MH |
2472 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
2473 | cmd_timer.work); | |
6bd32326 | 2474 | |
bda4f23a AE |
2475 | if (hdev->sent_cmd) { |
2476 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2477 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2478 | ||
2479 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2480 | } else { | |
2481 | BT_ERR("%s command tx timeout", hdev->name); | |
2482 | } | |
2483 | ||
6bd32326 | 2484 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2485 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2486 | } |
2487 | ||
2763eda6 | 2488 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
6928a924 | 2489 | bdaddr_t *bdaddr, u8 bdaddr_type) |
2763eda6 SJ |
2490 | { |
2491 | struct oob_data *data; | |
2492 | ||
6928a924 JH |
2493 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
2494 | if (bacmp(bdaddr, &data->bdaddr) != 0) | |
2495 | continue; | |
2496 | if (data->bdaddr_type != bdaddr_type) | |
2497 | continue; | |
2498 | return data; | |
2499 | } | |
2763eda6 SJ |
2500 | |
2501 | return NULL; | |
2502 | } | |
2503 | ||
6928a924 JH |
2504 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2505 | u8 bdaddr_type) | |
2763eda6 SJ |
2506 | { |
2507 | struct oob_data *data; | |
2508 | ||
6928a924 | 2509 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 SJ |
2510 | if (!data) |
2511 | return -ENOENT; | |
2512 | ||
6928a924 | 2513 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
2763eda6 SJ |
2514 | |
2515 | list_del(&data->list); | |
2516 | kfree(data); | |
2517 | ||
2518 | return 0; | |
2519 | } | |
2520 | ||
35f7498a | 2521 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2522 | { |
2523 | struct oob_data *data, *n; | |
2524 | ||
2525 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2526 | list_del(&data->list); | |
2527 | kfree(data); | |
2528 | } | |
2763eda6 SJ |
2529 | } |
2530 | ||
0798872e | 2531 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
6928a924 | 2532 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
81328d5c | 2533 | u8 *hash256, u8 *rand256) |
2763eda6 SJ |
2534 | { |
2535 | struct oob_data *data; | |
2536 | ||
6928a924 | 2537 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
2763eda6 | 2538 | if (!data) { |
0a14ab41 | 2539 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
2540 | if (!data) |
2541 | return -ENOMEM; | |
2542 | ||
2543 | bacpy(&data->bdaddr, bdaddr); | |
6928a924 | 2544 | data->bdaddr_type = bdaddr_type; |
2763eda6 SJ |
2545 | list_add(&data->list, &hdev->remote_oob_data); |
2546 | } | |
2547 | ||
81328d5c JH |
2548 | if (hash192 && rand192) { |
2549 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2550 | memcpy(data->rand192, rand192, sizeof(data->rand192)); | |
f7697b16 MH |
2551 | if (hash256 && rand256) |
2552 | data->present = 0x03; | |
81328d5c JH |
2553 | } else { |
2554 | memset(data->hash192, 0, sizeof(data->hash192)); | |
2555 | memset(data->rand192, 0, sizeof(data->rand192)); | |
f7697b16 MH |
2556 | if (hash256 && rand256) |
2557 | data->present = 0x02; | |
2558 | else | |
2559 | data->present = 0x00; | |
0798872e MH |
2560 | } |
2561 | ||
81328d5c JH |
2562 | if (hash256 && rand256) { |
2563 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2564 | memcpy(data->rand256, rand256, sizeof(data->rand256)); | |
2565 | } else { | |
2566 | memset(data->hash256, 0, sizeof(data->hash256)); | |
2567 | memset(data->rand256, 0, sizeof(data->rand256)); | |
f7697b16 MH |
2568 | if (hash192 && rand192) |
2569 | data->present = 0x01; | |
81328d5c | 2570 | } |
0798872e | 2571 | |
6ed93dc6 | 2572 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2573 | |
2574 | return 0; | |
2575 | } | |
2576 | ||
d2609b34 FG |
2577 | /* This function requires the caller holds hdev->lock */ |
2578 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) | |
2579 | { | |
2580 | struct adv_info *adv_instance; | |
2581 | ||
2582 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { | |
2583 | if (adv_instance->instance == instance) | |
2584 | return adv_instance; | |
2585 | } | |
2586 | ||
2587 | return NULL; | |
2588 | } | |
2589 | ||
2590 | /* This function requires the caller holds hdev->lock */ | |
74b93e9f PK |
2591 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) |
2592 | { | |
d2609b34 FG |
2593 | struct adv_info *cur_instance; |
2594 | ||
2595 | cur_instance = hci_find_adv_instance(hdev, instance); | |
2596 | if (!cur_instance) | |
2597 | return NULL; | |
2598 | ||
2599 | if (cur_instance == list_last_entry(&hdev->adv_instances, | |
2600 | struct adv_info, list)) | |
2601 | return list_first_entry(&hdev->adv_instances, | |
2602 | struct adv_info, list); | |
2603 | else | |
2604 | return list_next_entry(cur_instance, list); | |
2605 | } | |
2606 | ||
2607 | /* This function requires the caller holds hdev->lock */ | |
2608 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) | |
2609 | { | |
2610 | struct adv_info *adv_instance; | |
2611 | ||
2612 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2613 | if (!adv_instance) | |
2614 | return -ENOENT; | |
2615 | ||
2616 | BT_DBG("%s removing %dMR", hdev->name, instance); | |
2617 | ||
cab054ab JH |
2618 | if (hdev->cur_adv_instance == instance) { |
2619 | if (hdev->adv_instance_timeout) { | |
2620 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2621 | hdev->adv_instance_timeout = 0; | |
2622 | } | |
2623 | hdev->cur_adv_instance = 0x00; | |
5d900e46 FG |
2624 | } |
2625 | ||
d2609b34 FG |
2626 | list_del(&adv_instance->list); |
2627 | kfree(adv_instance); | |
2628 | ||
2629 | hdev->adv_instance_cnt--; | |
2630 | ||
2631 | return 0; | |
2632 | } | |
2633 | ||
2634 | /* This function requires the caller holds hdev->lock */ | |
2635 | void hci_adv_instances_clear(struct hci_dev *hdev) | |
2636 | { | |
2637 | struct adv_info *adv_instance, *n; | |
2638 | ||
5d900e46 FG |
2639 | if (hdev->adv_instance_timeout) { |
2640 | cancel_delayed_work(&hdev->adv_instance_expire); | |
2641 | hdev->adv_instance_timeout = 0; | |
2642 | } | |
2643 | ||
d2609b34 FG |
2644 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
2645 | list_del(&adv_instance->list); | |
2646 | kfree(adv_instance); | |
2647 | } | |
2648 | ||
2649 | hdev->adv_instance_cnt = 0; | |
cab054ab | 2650 | hdev->cur_adv_instance = 0x00; |
d2609b34 FG |
2651 | } |
2652 | ||
2653 | /* This function requires the caller holds hdev->lock */ | |
2654 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, | |
2655 | u16 adv_data_len, u8 *adv_data, | |
2656 | u16 scan_rsp_len, u8 *scan_rsp_data, | |
2657 | u16 timeout, u16 duration) | |
2658 | { | |
2659 | struct adv_info *adv_instance; | |
2660 | ||
2661 | adv_instance = hci_find_adv_instance(hdev, instance); | |
2662 | if (adv_instance) { | |
2663 | memset(adv_instance->adv_data, 0, | |
2664 | sizeof(adv_instance->adv_data)); | |
2665 | memset(adv_instance->scan_rsp_data, 0, | |
2666 | sizeof(adv_instance->scan_rsp_data)); | |
2667 | } else { | |
2668 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || | |
2669 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) | |
2670 | return -EOVERFLOW; | |
2671 | ||
39ecfad6 | 2672 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
d2609b34 FG |
2673 | if (!adv_instance) |
2674 | return -ENOMEM; | |
2675 | ||
fffd38bc | 2676 | adv_instance->pending = true; |
d2609b34 FG |
2677 | adv_instance->instance = instance; |
2678 | list_add(&adv_instance->list, &hdev->adv_instances); | |
2679 | hdev->adv_instance_cnt++; | |
2680 | } | |
2681 | ||
2682 | adv_instance->flags = flags; | |
2683 | adv_instance->adv_data_len = adv_data_len; | |
2684 | adv_instance->scan_rsp_len = scan_rsp_len; | |
2685 | ||
2686 | if (adv_data_len) | |
2687 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); | |
2688 | ||
2689 | if (scan_rsp_len) | |
2690 | memcpy(adv_instance->scan_rsp_data, | |
2691 | scan_rsp_data, scan_rsp_len); | |
2692 | ||
2693 | adv_instance->timeout = timeout; | |
5d900e46 | 2694 | adv_instance->remaining_time = timeout; |
d2609b34 FG |
2695 | |
2696 | if (duration == 0) | |
2697 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; | |
2698 | else | |
2699 | adv_instance->duration = duration; | |
2700 | ||
2701 | BT_DBG("%s for %dMR", hdev->name, instance); | |
2702 | ||
2703 | return 0; | |
2704 | } | |
2705 | ||
dcc36c16 | 2706 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 2707 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 2708 | { |
8035ded4 | 2709 | struct bdaddr_list *b; |
b2a66aad | 2710 | |
dcc36c16 | 2711 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 2712 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 2713 | return b; |
b9ee0a78 | 2714 | } |
b2a66aad AJ |
2715 | |
2716 | return NULL; | |
2717 | } | |
2718 | ||
dcc36c16 | 2719 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad | 2720 | { |
7eb7404f | 2721 | struct bdaddr_list *b, *n; |
b2a66aad | 2722 | |
7eb7404f GT |
2723 | list_for_each_entry_safe(b, n, bdaddr_list, list) { |
2724 | list_del(&b->list); | |
b2a66aad AJ |
2725 | kfree(b); |
2726 | } | |
b2a66aad AJ |
2727 | } |
2728 | ||
dcc36c16 | 2729 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2730 | { |
2731 | struct bdaddr_list *entry; | |
b2a66aad | 2732 | |
b9ee0a78 | 2733 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2734 | return -EBADF; |
2735 | ||
dcc36c16 | 2736 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 2737 | return -EEXIST; |
b2a66aad | 2738 | |
27f70f3e | 2739 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
2740 | if (!entry) |
2741 | return -ENOMEM; | |
b2a66aad AJ |
2742 | |
2743 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2744 | entry->bdaddr_type = type; |
b2a66aad | 2745 | |
dcc36c16 | 2746 | list_add(&entry->list, list); |
b2a66aad | 2747 | |
2a8357f2 | 2748 | return 0; |
b2a66aad AJ |
2749 | } |
2750 | ||
dcc36c16 | 2751 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2752 | { |
2753 | struct bdaddr_list *entry; | |
b2a66aad | 2754 | |
35f7498a | 2755 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 2756 | hci_bdaddr_list_clear(list); |
35f7498a JH |
2757 | return 0; |
2758 | } | |
b2a66aad | 2759 | |
dcc36c16 | 2760 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
2761 | if (!entry) |
2762 | return -ENOENT; | |
2763 | ||
2764 | list_del(&entry->list); | |
2765 | kfree(entry); | |
2766 | ||
2767 | return 0; | |
2768 | } | |
2769 | ||
15819a70 AG |
2770 | /* This function requires the caller holds hdev->lock */ |
2771 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
2772 | bdaddr_t *addr, u8 addr_type) | |
2773 | { | |
2774 | struct hci_conn_params *params; | |
2775 | ||
2776 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
2777 | if (bacmp(¶ms->addr, addr) == 0 && | |
2778 | params->addr_type == addr_type) { | |
2779 | return params; | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | return NULL; | |
2784 | } | |
2785 | ||
4b10966f | 2786 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
2787 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
2788 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 2789 | { |
912b42ef | 2790 | struct hci_conn_params *param; |
a9b0a04c | 2791 | |
501f8827 | 2792 | list_for_each_entry(param, list, action) { |
912b42ef JH |
2793 | if (bacmp(¶m->addr, addr) == 0 && |
2794 | param->addr_type == addr_type) | |
2795 | return param; | |
4b10966f MH |
2796 | } |
2797 | ||
2798 | return NULL; | |
a9b0a04c AG |
2799 | } |
2800 | ||
15819a70 | 2801 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
2802 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
2803 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
2804 | { |
2805 | struct hci_conn_params *params; | |
2806 | ||
2807 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
cef952ce | 2808 | if (params) |
51d167c0 | 2809 | return params; |
15819a70 AG |
2810 | |
2811 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
2812 | if (!params) { | |
2813 | BT_ERR("Out of memory"); | |
51d167c0 | 2814 | return NULL; |
15819a70 AG |
2815 | } |
2816 | ||
2817 | bacpy(¶ms->addr, addr); | |
2818 | params->addr_type = addr_type; | |
cef952ce AG |
2819 | |
2820 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 2821 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 2822 | |
bf5b3c8b MH |
2823 | params->conn_min_interval = hdev->le_conn_min_interval; |
2824 | params->conn_max_interval = hdev->le_conn_max_interval; | |
2825 | params->conn_latency = hdev->le_conn_latency; | |
2826 | params->supervision_timeout = hdev->le_supv_timeout; | |
2827 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
2828 | ||
2829 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
2830 | ||
51d167c0 | 2831 | return params; |
bf5b3c8b MH |
2832 | } |
2833 | ||
f6c63249 | 2834 | static void hci_conn_params_free(struct hci_conn_params *params) |
15819a70 | 2835 | { |
f8aaf9b6 | 2836 | if (params->conn) { |
f161dd41 | 2837 | hci_conn_drop(params->conn); |
f8aaf9b6 JH |
2838 | hci_conn_put(params->conn); |
2839 | } | |
f161dd41 | 2840 | |
95305baa | 2841 | list_del(¶ms->action); |
15819a70 AG |
2842 | list_del(¶ms->list); |
2843 | kfree(params); | |
f6c63249 JH |
2844 | } |
2845 | ||
2846 | /* This function requires the caller holds hdev->lock */ | |
2847 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
2848 | { | |
2849 | struct hci_conn_params *params; | |
2850 | ||
2851 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
2852 | if (!params) | |
2853 | return; | |
2854 | ||
2855 | hci_conn_params_free(params); | |
15819a70 | 2856 | |
95305baa JH |
2857 | hci_update_background_scan(hdev); |
2858 | ||
15819a70 AG |
2859 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
2860 | } | |
2861 | ||
2862 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 2863 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
2864 | { |
2865 | struct hci_conn_params *params, *tmp; | |
2866 | ||
2867 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
2868 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
2869 | continue; | |
f75113a2 JP |
2870 | |
2871 | /* If trying to estabilish one time connection to disabled | |
2872 | * device, leave the params, but mark them as just once. | |
2873 | */ | |
2874 | if (params->explicit_connect) { | |
2875 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
2876 | continue; | |
2877 | } | |
2878 | ||
15819a70 AG |
2879 | list_del(¶ms->list); |
2880 | kfree(params); | |
2881 | } | |
2882 | ||
55af49a8 | 2883 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
2884 | } |
2885 | ||
2886 | /* This function requires the caller holds hdev->lock */ | |
030e7f81 | 2887 | static void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 2888 | { |
15819a70 | 2889 | struct hci_conn_params *params, *tmp; |
77a77a30 | 2890 | |
f6c63249 JH |
2891 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
2892 | hci_conn_params_free(params); | |
77a77a30 | 2893 | |
15819a70 | 2894 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
2895 | } |
2896 | ||
a1f4c318 JH |
2897 | /* Copy the Identity Address of the controller. |
2898 | * | |
2899 | * If the controller has a public BD_ADDR, then by default use that one. | |
2900 | * If this is a LE only controller without a public address, default to | |
2901 | * the static random address. | |
2902 | * | |
2903 | * For debugging purposes it is possible to force controllers with a | |
2904 | * public address to use the static random address instead. | |
50b5b952 MH |
2905 | * |
2906 | * In case BR/EDR has been disabled on a dual-mode controller and | |
2907 | * userspace has configured a static address, then that address | |
2908 | * becomes the identity address instead of the public BR/EDR address. | |
a1f4c318 JH |
2909 | */ |
2910 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2911 | u8 *bdaddr_type) | |
2912 | { | |
b7cb93e5 | 2913 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
50b5b952 | 2914 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
d7a5a11d | 2915 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
50b5b952 | 2916 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
a1f4c318 JH |
2917 | bacpy(bdaddr, &hdev->static_addr); |
2918 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
2919 | } else { | |
2920 | bacpy(bdaddr, &hdev->bdaddr); | |
2921 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
2922 | } | |
2923 | } | |
2924 | ||
9be0dab7 DH |
2925 | /* Alloc HCI device */ |
2926 | struct hci_dev *hci_alloc_dev(void) | |
2927 | { | |
2928 | struct hci_dev *hdev; | |
2929 | ||
27f70f3e | 2930 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
2931 | if (!hdev) |
2932 | return NULL; | |
2933 | ||
b1b813d4 DH |
2934 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2935 | hdev->esco_type = (ESCO_HV1); | |
2936 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2937 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2938 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 2939 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
2940 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2941 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
d2609b34 FG |
2942 | hdev->adv_instance_cnt = 0; |
2943 | hdev->cur_adv_instance = 0x00; | |
5d900e46 | 2944 | hdev->adv_instance_timeout = 0; |
b1b813d4 | 2945 | |
b1b813d4 DH |
2946 | hdev->sniff_max_interval = 800; |
2947 | hdev->sniff_min_interval = 80; | |
2948 | ||
3f959d46 | 2949 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
2950 | hdev->le_adv_min_interval = 0x0800; |
2951 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
2952 | hdev->le_scan_interval = 0x0060; |
2953 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
2954 | hdev->le_conn_min_interval = 0x0028; |
2955 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
2956 | hdev->le_conn_latency = 0x0000; |
2957 | hdev->le_supv_timeout = 0x002a; | |
a8e1bfaa MH |
2958 | hdev->le_def_tx_len = 0x001b; |
2959 | hdev->le_def_tx_time = 0x0148; | |
2960 | hdev->le_max_tx_len = 0x001b; | |
2961 | hdev->le_max_tx_time = 0x0148; | |
2962 | hdev->le_max_rx_len = 0x001b; | |
2963 | hdev->le_max_rx_time = 0x0148; | |
bef64738 | 2964 | |
d6bfd59c | 2965 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 2966 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
2967 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
2968 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 2969 | |
b1b813d4 DH |
2970 | mutex_init(&hdev->lock); |
2971 | mutex_init(&hdev->req_lock); | |
2972 | ||
2973 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2974 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 2975 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
2976 | INIT_LIST_HEAD(&hdev->uuids); |
2977 | INIT_LIST_HEAD(&hdev->link_keys); | |
2978 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 2979 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 2980 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 2981 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 2982 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 2983 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 2984 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 2985 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
d2609b34 | 2986 | INIT_LIST_HEAD(&hdev->adv_instances); |
b1b813d4 DH |
2987 | |
2988 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2989 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2990 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2991 | INIT_WORK(&hdev->power_on, hci_power_on); | |
c7741d16 | 2992 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
b1b813d4 | 2993 | |
b1b813d4 | 2994 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
b1b813d4 | 2995 | |
b1b813d4 DH |
2996 | skb_queue_head_init(&hdev->rx_q); |
2997 | skb_queue_head_init(&hdev->cmd_q); | |
2998 | skb_queue_head_init(&hdev->raw_q); | |
2999 | ||
3000 | init_waitqueue_head(&hdev->req_wait_q); | |
3001 | ||
65cc2b49 | 3002 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3003 | |
5fc16cc4 JH |
3004 | hci_request_setup(hdev); |
3005 | ||
b1b813d4 DH |
3006 | hci_init_sysfs(hdev); |
3007 | discovery_init(hdev); | |
9be0dab7 DH |
3008 | |
3009 | return hdev; | |
3010 | } | |
3011 | EXPORT_SYMBOL(hci_alloc_dev); | |
3012 | ||
3013 | /* Free HCI device */ | |
3014 | void hci_free_dev(struct hci_dev *hdev) | |
3015 | { | |
9be0dab7 DH |
3016 | /* will free via device release */ |
3017 | put_device(&hdev->dev); | |
3018 | } | |
3019 | EXPORT_SYMBOL(hci_free_dev); | |
3020 | ||
1da177e4 LT |
3021 | /* Register HCI device */ |
3022 | int hci_register_dev(struct hci_dev *hdev) | |
3023 | { | |
b1b813d4 | 3024 | int id, error; |
1da177e4 | 3025 | |
74292d5a | 3026 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3027 | return -EINVAL; |
3028 | ||
08add513 MM |
3029 | /* Do not allow HCI_AMP devices to register at index 0, |
3030 | * so the index can be used as the AMP controller ID. | |
3031 | */ | |
3df92b31 SL |
3032 | switch (hdev->dev_type) { |
3033 | case HCI_BREDR: | |
3034 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3035 | break; | |
3036 | case HCI_AMP: | |
3037 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3038 | break; | |
3039 | default: | |
3040 | return -EINVAL; | |
1da177e4 | 3041 | } |
8e87d142 | 3042 | |
3df92b31 SL |
3043 | if (id < 0) |
3044 | return id; | |
3045 | ||
1da177e4 LT |
3046 | sprintf(hdev->name, "hci%d", id); |
3047 | hdev->id = id; | |
2d8b3a11 AE |
3048 | |
3049 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3050 | ||
d8537548 KC |
3051 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3052 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3053 | if (!hdev->workqueue) { |
3054 | error = -ENOMEM; | |
3055 | goto err; | |
3056 | } | |
f48fd9c8 | 3057 | |
d8537548 KC |
3058 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3059 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3060 | if (!hdev->req_workqueue) { |
3061 | destroy_workqueue(hdev->workqueue); | |
3062 | error = -ENOMEM; | |
3063 | goto err; | |
3064 | } | |
3065 | ||
0153e2ec MH |
3066 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3067 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3068 | ||
bdc3e0f1 MH |
3069 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3070 | ||
3071 | error = device_add(&hdev->dev); | |
33ca954d | 3072 | if (error < 0) |
54506918 | 3073 | goto err_wqueue; |
1da177e4 | 3074 | |
6d5d2ee6 HK |
3075 | hci_leds_init(hdev); |
3076 | ||
611b30f7 | 3077 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3078 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3079 | hdev); | |
611b30f7 MH |
3080 | if (hdev->rfkill) { |
3081 | if (rfkill_register(hdev->rfkill) < 0) { | |
3082 | rfkill_destroy(hdev->rfkill); | |
3083 | hdev->rfkill = NULL; | |
3084 | } | |
3085 | } | |
3086 | ||
5e130367 | 3087 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
a1536da2 | 3088 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
5e130367 | 3089 | |
a1536da2 MH |
3090 | hci_dev_set_flag(hdev, HCI_SETUP); |
3091 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); | |
ce2be9ac | 3092 | |
01cd3404 | 3093 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3094 | /* Assume BR/EDR support until proven otherwise (such as |
3095 | * through reading supported features during init. | |
3096 | */ | |
a1536da2 | 3097 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
56f87901 | 3098 | } |
ce2be9ac | 3099 | |
fcee3377 GP |
3100 | write_lock(&hci_dev_list_lock); |
3101 | list_add(&hdev->list, &hci_dev_list); | |
3102 | write_unlock(&hci_dev_list_lock); | |
3103 | ||
4a964404 MH |
3104 | /* Devices that are marked for raw-only usage are unconfigured |
3105 | * and should not be included in normal operation. | |
fee746b0 MH |
3106 | */ |
3107 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
a1536da2 | 3108 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
fee746b0 | 3109 | |
05fcd4c4 | 3110 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
dc946bd8 | 3111 | hci_dev_hold(hdev); |
1da177e4 | 3112 | |
19202573 | 3113 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3114 | |
1da177e4 | 3115 | return id; |
f48fd9c8 | 3116 | |
33ca954d DH |
3117 | err_wqueue: |
3118 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3119 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3120 | err: |
3df92b31 | 3121 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3122 | |
33ca954d | 3123 | return error; |
1da177e4 LT |
3124 | } |
3125 | EXPORT_SYMBOL(hci_register_dev); | |
3126 | ||
3127 | /* Unregister HCI device */ | |
59735631 | 3128 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3129 | { |
2d7cc19e | 3130 | int id; |
ef222013 | 3131 | |
c13854ce | 3132 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3133 | |
a1536da2 | 3134 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
94324962 | 3135 | |
3df92b31 SL |
3136 | id = hdev->id; |
3137 | ||
f20d09d5 | 3138 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3139 | list_del(&hdev->list); |
f20d09d5 | 3140 | write_unlock(&hci_dev_list_lock); |
1da177e4 | 3141 | |
b9b5ef18 GP |
3142 | cancel_work_sync(&hdev->power_on); |
3143 | ||
bf389cab JS |
3144 | hci_dev_do_close(hdev); |
3145 | ||
ab81cbf9 | 3146 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d7a5a11d MH |
3147 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
3148 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
09fd0de5 | 3149 | hci_dev_lock(hdev); |
744cf19e | 3150 | mgmt_index_removed(hdev); |
09fd0de5 | 3151 | hci_dev_unlock(hdev); |
56e5cb86 | 3152 | } |
ab81cbf9 | 3153 | |
2e58ef3e JH |
3154 | /* mgmt_index_removed should take care of emptying the |
3155 | * pending list */ | |
3156 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3157 | ||
05fcd4c4 | 3158 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
1da177e4 | 3159 | |
611b30f7 MH |
3160 | if (hdev->rfkill) { |
3161 | rfkill_unregister(hdev->rfkill); | |
3162 | rfkill_destroy(hdev->rfkill); | |
3163 | } | |
3164 | ||
bdc3e0f1 | 3165 | device_del(&hdev->dev); |
147e2d59 | 3166 | |
0153e2ec MH |
3167 | debugfs_remove_recursive(hdev->debugfs); |
3168 | ||
f48fd9c8 | 3169 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3170 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3171 | |
09fd0de5 | 3172 | hci_dev_lock(hdev); |
dcc36c16 | 3173 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 3174 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 3175 | hci_uuids_clear(hdev); |
55ed8ca1 | 3176 | hci_link_keys_clear(hdev); |
b899efaf | 3177 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3178 | hci_smp_irks_clear(hdev); |
2763eda6 | 3179 | hci_remote_oob_data_clear(hdev); |
d2609b34 | 3180 | hci_adv_instances_clear(hdev); |
dcc36c16 | 3181 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 3182 | hci_conn_params_clear_all(hdev); |
22078800 | 3183 | hci_discovery_filter_clear(hdev); |
09fd0de5 | 3184 | hci_dev_unlock(hdev); |
e2e0cacb | 3185 | |
dc946bd8 | 3186 | hci_dev_put(hdev); |
3df92b31 SL |
3187 | |
3188 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3189 | } |
3190 | EXPORT_SYMBOL(hci_unregister_dev); | |
3191 | ||
3192 | /* Suspend HCI device */ | |
3193 | int hci_suspend_dev(struct hci_dev *hdev) | |
3194 | { | |
05fcd4c4 | 3195 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
1da177e4 LT |
3196 | return 0; |
3197 | } | |
3198 | EXPORT_SYMBOL(hci_suspend_dev); | |
3199 | ||
3200 | /* Resume HCI device */ | |
3201 | int hci_resume_dev(struct hci_dev *hdev) | |
3202 | { | |
05fcd4c4 | 3203 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
1da177e4 LT |
3204 | return 0; |
3205 | } | |
3206 | EXPORT_SYMBOL(hci_resume_dev); | |
3207 | ||
75e0569f MH |
3208 | /* Reset HCI device */ |
3209 | int hci_reset_dev(struct hci_dev *hdev) | |
3210 | { | |
3211 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; | |
3212 | struct sk_buff *skb; | |
3213 | ||
3214 | skb = bt_skb_alloc(3, GFP_ATOMIC); | |
3215 | if (!skb) | |
3216 | return -ENOMEM; | |
3217 | ||
d79f34e3 | 3218 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
75e0569f MH |
3219 | memcpy(skb_put(skb, 3), hw_err, 3); |
3220 | ||
3221 | /* Send Hardware Error to upper stack */ | |
3222 | return hci_recv_frame(hdev, skb); | |
3223 | } | |
3224 | EXPORT_SYMBOL(hci_reset_dev); | |
3225 | ||
76bca880 | 3226 | /* Receive frame from HCI drivers */ |
e1a26170 | 3227 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3228 | { |
76bca880 | 3229 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3230 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3231 | kfree_skb(skb); |
3232 | return -ENXIO; | |
3233 | } | |
3234 | ||
d79f34e3 MH |
3235 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
3236 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
3237 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
fe806dce MH |
3238 | kfree_skb(skb); |
3239 | return -EINVAL; | |
3240 | } | |
3241 | ||
d82603c6 | 3242 | /* Incoming skb */ |
76bca880 MH |
3243 | bt_cb(skb)->incoming = 1; |
3244 | ||
3245 | /* Time stamp */ | |
3246 | __net_timestamp(skb); | |
3247 | ||
76bca880 | 3248 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3249 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3250 | |
76bca880 MH |
3251 | return 0; |
3252 | } | |
3253 | EXPORT_SYMBOL(hci_recv_frame); | |
3254 | ||
e875ff84 MH |
3255 | /* Receive diagnostic message from HCI drivers */ |
3256 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) | |
3257 | { | |
581d6fd6 | 3258 | /* Mark as diagnostic packet */ |
d79f34e3 | 3259 | hci_skb_pkt_type(skb) = HCI_DIAG_PKT; |
581d6fd6 | 3260 | |
e875ff84 MH |
3261 | /* Time stamp */ |
3262 | __net_timestamp(skb); | |
3263 | ||
581d6fd6 MH |
3264 | skb_queue_tail(&hdev->rx_q, skb); |
3265 | queue_work(hdev->workqueue, &hdev->rx_work); | |
e875ff84 | 3266 | |
e875ff84 MH |
3267 | return 0; |
3268 | } | |
3269 | EXPORT_SYMBOL(hci_recv_diag); | |
3270 | ||
1da177e4 LT |
3271 | /* ---- Interface to upper protocols ---- */ |
3272 | ||
1da177e4 LT |
3273 | int hci_register_cb(struct hci_cb *cb) |
3274 | { | |
3275 | BT_DBG("%p name %s", cb, cb->name); | |
3276 | ||
fba7ecf0 | 3277 | mutex_lock(&hci_cb_list_lock); |
00629e0f | 3278 | list_add_tail(&cb->list, &hci_cb_list); |
fba7ecf0 | 3279 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3280 | |
3281 | return 0; | |
3282 | } | |
3283 | EXPORT_SYMBOL(hci_register_cb); | |
3284 | ||
3285 | int hci_unregister_cb(struct hci_cb *cb) | |
3286 | { | |
3287 | BT_DBG("%p name %s", cb, cb->name); | |
3288 | ||
fba7ecf0 | 3289 | mutex_lock(&hci_cb_list_lock); |
1da177e4 | 3290 | list_del(&cb->list); |
fba7ecf0 | 3291 | mutex_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3292 | |
3293 | return 0; | |
3294 | } | |
3295 | EXPORT_SYMBOL(hci_unregister_cb); | |
3296 | ||
51086991 | 3297 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3298 | { |
cdc52faa MH |
3299 | int err; |
3300 | ||
d79f34e3 MH |
3301 | BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb), |
3302 | skb->len); | |
1da177e4 | 3303 | |
cd82e61c MH |
3304 | /* Time stamp */ |
3305 | __net_timestamp(skb); | |
1da177e4 | 3306 | |
cd82e61c MH |
3307 | /* Send copy to monitor */ |
3308 | hci_send_to_monitor(hdev, skb); | |
3309 | ||
3310 | if (atomic_read(&hdev->promisc)) { | |
3311 | /* Send copy to the sockets */ | |
470fe1b5 | 3312 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3313 | } |
3314 | ||
3315 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3316 | skb_orphan(skb); | |
3317 | ||
73d0d3c8 MH |
3318 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
3319 | kfree_skb(skb); | |
3320 | return; | |
3321 | } | |
3322 | ||
cdc52faa MH |
3323 | err = hdev->send(hdev, skb); |
3324 | if (err < 0) { | |
3325 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
3326 | kfree_skb(skb); | |
3327 | } | |
1da177e4 LT |
3328 | } |
3329 | ||
1ca3a9d0 | 3330 | /* Send HCI command */ |
07dc93dd JH |
3331 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3332 | const void *param) | |
1ca3a9d0 JH |
3333 | { |
3334 | struct sk_buff *skb; | |
3335 | ||
3336 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3337 | ||
3338 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3339 | if (!skb) { | |
3340 | BT_ERR("%s no memory for command", hdev->name); | |
3341 | return -ENOMEM; | |
3342 | } | |
3343 | ||
49c922bb | 3344 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
3345 | * single-command requests. |
3346 | */ | |
44d27137 | 3347 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 3348 | |
1da177e4 | 3349 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3350 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3351 | |
3352 | return 0; | |
3353 | } | |
1da177e4 LT |
3354 | |
3355 | /* Get data from the previously sent command */ | |
a9de9248 | 3356 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3357 | { |
3358 | struct hci_command_hdr *hdr; | |
3359 | ||
3360 | if (!hdev->sent_cmd) | |
3361 | return NULL; | |
3362 | ||
3363 | hdr = (void *) hdev->sent_cmd->data; | |
3364 | ||
a9de9248 | 3365 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3366 | return NULL; |
3367 | ||
f0e09510 | 3368 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3369 | |
3370 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3371 | } | |
3372 | ||
fbef168f LP |
3373 | /* Send HCI command and wait for command commplete event */ |
3374 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
3375 | const void *param, u32 timeout) | |
3376 | { | |
3377 | struct sk_buff *skb; | |
3378 | ||
3379 | if (!test_bit(HCI_UP, &hdev->flags)) | |
3380 | return ERR_PTR(-ENETDOWN); | |
3381 | ||
3382 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
3383 | ||
b504430c | 3384 | hci_req_sync_lock(hdev); |
fbef168f | 3385 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
b504430c | 3386 | hci_req_sync_unlock(hdev); |
fbef168f LP |
3387 | |
3388 | return skb; | |
3389 | } | |
3390 | EXPORT_SYMBOL(hci_cmd_sync); | |
3391 | ||
1da177e4 LT |
3392 | /* Send ACL data */ |
3393 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3394 | { | |
3395 | struct hci_acl_hdr *hdr; | |
3396 | int len = skb->len; | |
3397 | ||
badff6d0 ACM |
3398 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3399 | skb_reset_transport_header(skb); | |
9c70220b | 3400 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3401 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3402 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3403 | } |
3404 | ||
ee22be7e | 3405 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3406 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3407 | { |
ee22be7e | 3408 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3409 | struct hci_dev *hdev = conn->hdev; |
3410 | struct sk_buff *list; | |
3411 | ||
087bfd99 GP |
3412 | skb->len = skb_headlen(skb); |
3413 | skb->data_len = 0; | |
3414 | ||
d79f34e3 | 3415 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
204a6e54 AE |
3416 | |
3417 | switch (hdev->dev_type) { | |
3418 | case HCI_BREDR: | |
3419 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3420 | break; | |
3421 | case HCI_AMP: | |
3422 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3423 | break; | |
3424 | default: | |
3425 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3426 | return; | |
3427 | } | |
087bfd99 | 3428 | |
70f23020 AE |
3429 | list = skb_shinfo(skb)->frag_list; |
3430 | if (!list) { | |
1da177e4 LT |
3431 | /* Non fragmented */ |
3432 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3433 | ||
73d80deb | 3434 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3435 | } else { |
3436 | /* Fragmented */ | |
3437 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3438 | ||
3439 | skb_shinfo(skb)->frag_list = NULL; | |
3440 | ||
9cfd5a23 JR |
3441 | /* Queue all fragments atomically. We need to use spin_lock_bh |
3442 | * here because of 6LoWPAN links, as there this function is | |
3443 | * called from softirq and using normal spin lock could cause | |
3444 | * deadlocks. | |
3445 | */ | |
3446 | spin_lock_bh(&queue->lock); | |
1da177e4 | 3447 | |
73d80deb | 3448 | __skb_queue_tail(queue, skb); |
e702112f AE |
3449 | |
3450 | flags &= ~ACL_START; | |
3451 | flags |= ACL_CONT; | |
1da177e4 LT |
3452 | do { |
3453 | skb = list; list = list->next; | |
8e87d142 | 3454 | |
d79f34e3 | 3455 | hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; |
e702112f | 3456 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3457 | |
3458 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3459 | ||
73d80deb | 3460 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3461 | } while (list); |
3462 | ||
9cfd5a23 | 3463 | spin_unlock_bh(&queue->lock); |
1da177e4 | 3464 | } |
73d80deb LAD |
3465 | } |
3466 | ||
3467 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3468 | { | |
ee22be7e | 3469 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3470 | |
f0e09510 | 3471 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3472 | |
ee22be7e | 3473 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3474 | |
3eff45ea | 3475 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3476 | } |
1da177e4 LT |
3477 | |
3478 | /* Send SCO data */ | |
0d861d8b | 3479 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3480 | { |
3481 | struct hci_dev *hdev = conn->hdev; | |
3482 | struct hci_sco_hdr hdr; | |
3483 | ||
3484 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3485 | ||
aca3192c | 3486 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3487 | hdr.dlen = skb->len; |
3488 | ||
badff6d0 ACM |
3489 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3490 | skb_reset_transport_header(skb); | |
9c70220b | 3491 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3492 | |
d79f34e3 | 3493 | hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; |
c78ae283 | 3494 | |
1da177e4 | 3495 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3496 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3497 | } |
1da177e4 LT |
3498 | |
3499 | /* ---- HCI TX task (outgoing data) ---- */ | |
3500 | ||
3501 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3502 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3503 | int *quote) | |
1da177e4 LT |
3504 | { |
3505 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3506 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3507 | unsigned int num = 0, min = ~0; |
1da177e4 | 3508 | |
8e87d142 | 3509 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3510 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3511 | |
3512 | rcu_read_lock(); | |
3513 | ||
3514 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3515 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3516 | continue; |
769be974 MH |
3517 | |
3518 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3519 | continue; | |
3520 | ||
1da177e4 LT |
3521 | num++; |
3522 | ||
3523 | if (c->sent < min) { | |
3524 | min = c->sent; | |
3525 | conn = c; | |
3526 | } | |
52087a79 LAD |
3527 | |
3528 | if (hci_conn_num(hdev, type) == num) | |
3529 | break; | |
1da177e4 LT |
3530 | } |
3531 | ||
bf4c6325 GP |
3532 | rcu_read_unlock(); |
3533 | ||
1da177e4 | 3534 | if (conn) { |
6ed58ec5 VT |
3535 | int cnt, q; |
3536 | ||
3537 | switch (conn->type) { | |
3538 | case ACL_LINK: | |
3539 | cnt = hdev->acl_cnt; | |
3540 | break; | |
3541 | case SCO_LINK: | |
3542 | case ESCO_LINK: | |
3543 | cnt = hdev->sco_cnt; | |
3544 | break; | |
3545 | case LE_LINK: | |
3546 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3547 | break; | |
3548 | default: | |
3549 | cnt = 0; | |
3550 | BT_ERR("Unknown link type"); | |
3551 | } | |
3552 | ||
3553 | q = cnt / num; | |
1da177e4 LT |
3554 | *quote = q ? q : 1; |
3555 | } else | |
3556 | *quote = 0; | |
3557 | ||
3558 | BT_DBG("conn %p quote %d", conn, *quote); | |
3559 | return conn; | |
3560 | } | |
3561 | ||
6039aa73 | 3562 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3563 | { |
3564 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3565 | struct hci_conn *c; |
1da177e4 | 3566 | |
bae1f5d9 | 3567 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3568 | |
bf4c6325 GP |
3569 | rcu_read_lock(); |
3570 | ||
1da177e4 | 3571 | /* Kill stalled connections */ |
bf4c6325 | 3572 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3573 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3574 | BT_ERR("%s killing stalled connection %pMR", |
3575 | hdev->name, &c->dst); | |
bed71748 | 3576 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3577 | } |
3578 | } | |
bf4c6325 GP |
3579 | |
3580 | rcu_read_unlock(); | |
1da177e4 LT |
3581 | } |
3582 | ||
6039aa73 GP |
3583 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3584 | int *quote) | |
1da177e4 | 3585 | { |
73d80deb LAD |
3586 | struct hci_conn_hash *h = &hdev->conn_hash; |
3587 | struct hci_chan *chan = NULL; | |
abc5de8f | 3588 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3589 | struct hci_conn *conn; |
73d80deb LAD |
3590 | int cnt, q, conn_num = 0; |
3591 | ||
3592 | BT_DBG("%s", hdev->name); | |
3593 | ||
bf4c6325 GP |
3594 | rcu_read_lock(); |
3595 | ||
3596 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3597 | struct hci_chan *tmp; |
3598 | ||
3599 | if (conn->type != type) | |
3600 | continue; | |
3601 | ||
3602 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3603 | continue; | |
3604 | ||
3605 | conn_num++; | |
3606 | ||
8192edef | 3607 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3608 | struct sk_buff *skb; |
3609 | ||
3610 | if (skb_queue_empty(&tmp->data_q)) | |
3611 | continue; | |
3612 | ||
3613 | skb = skb_peek(&tmp->data_q); | |
3614 | if (skb->priority < cur_prio) | |
3615 | continue; | |
3616 | ||
3617 | if (skb->priority > cur_prio) { | |
3618 | num = 0; | |
3619 | min = ~0; | |
3620 | cur_prio = skb->priority; | |
3621 | } | |
3622 | ||
3623 | num++; | |
3624 | ||
3625 | if (conn->sent < min) { | |
3626 | min = conn->sent; | |
3627 | chan = tmp; | |
3628 | } | |
3629 | } | |
3630 | ||
3631 | if (hci_conn_num(hdev, type) == conn_num) | |
3632 | break; | |
3633 | } | |
3634 | ||
bf4c6325 GP |
3635 | rcu_read_unlock(); |
3636 | ||
73d80deb LAD |
3637 | if (!chan) |
3638 | return NULL; | |
3639 | ||
3640 | switch (chan->conn->type) { | |
3641 | case ACL_LINK: | |
3642 | cnt = hdev->acl_cnt; | |
3643 | break; | |
bd1eb66b AE |
3644 | case AMP_LINK: |
3645 | cnt = hdev->block_cnt; | |
3646 | break; | |
73d80deb LAD |
3647 | case SCO_LINK: |
3648 | case ESCO_LINK: | |
3649 | cnt = hdev->sco_cnt; | |
3650 | break; | |
3651 | case LE_LINK: | |
3652 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3653 | break; | |
3654 | default: | |
3655 | cnt = 0; | |
3656 | BT_ERR("Unknown link type"); | |
3657 | } | |
3658 | ||
3659 | q = cnt / num; | |
3660 | *quote = q ? q : 1; | |
3661 | BT_DBG("chan %p quote %d", chan, *quote); | |
3662 | return chan; | |
3663 | } | |
3664 | ||
02b20f0b LAD |
3665 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3666 | { | |
3667 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3668 | struct hci_conn *conn; | |
3669 | int num = 0; | |
3670 | ||
3671 | BT_DBG("%s", hdev->name); | |
3672 | ||
bf4c6325 GP |
3673 | rcu_read_lock(); |
3674 | ||
3675 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3676 | struct hci_chan *chan; |
3677 | ||
3678 | if (conn->type != type) | |
3679 | continue; | |
3680 | ||
3681 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3682 | continue; | |
3683 | ||
3684 | num++; | |
3685 | ||
8192edef | 3686 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3687 | struct sk_buff *skb; |
3688 | ||
3689 | if (chan->sent) { | |
3690 | chan->sent = 0; | |
3691 | continue; | |
3692 | } | |
3693 | ||
3694 | if (skb_queue_empty(&chan->data_q)) | |
3695 | continue; | |
3696 | ||
3697 | skb = skb_peek(&chan->data_q); | |
3698 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3699 | continue; | |
3700 | ||
3701 | skb->priority = HCI_PRIO_MAX - 1; | |
3702 | ||
3703 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3704 | skb->priority); |
02b20f0b LAD |
3705 | } |
3706 | ||
3707 | if (hci_conn_num(hdev, type) == num) | |
3708 | break; | |
3709 | } | |
bf4c6325 GP |
3710 | |
3711 | rcu_read_unlock(); | |
3712 | ||
02b20f0b LAD |
3713 | } |
3714 | ||
b71d385a AE |
3715 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3716 | { | |
3717 | /* Calculate count of blocks used by this packet */ | |
3718 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3719 | } | |
3720 | ||
6039aa73 | 3721 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3722 | { |
d7a5a11d | 3723 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
1da177e4 LT |
3724 | /* ACL tx timeout must be longer than maximum |
3725 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3726 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3727 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3728 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3729 | } |
63d2bc1b | 3730 | } |
1da177e4 | 3731 | |
6039aa73 | 3732 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3733 | { |
3734 | unsigned int cnt = hdev->acl_cnt; | |
3735 | struct hci_chan *chan; | |
3736 | struct sk_buff *skb; | |
3737 | int quote; | |
3738 | ||
3739 | __check_timeout(hdev, cnt); | |
04837f64 | 3740 | |
73d80deb | 3741 | while (hdev->acl_cnt && |
a8c5fb1a | 3742 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3743 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3744 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3745 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3746 | skb->len, skb->priority); |
73d80deb | 3747 | |
ec1cce24 LAD |
3748 | /* Stop if priority has changed */ |
3749 | if (skb->priority < priority) | |
3750 | break; | |
3751 | ||
3752 | skb = skb_dequeue(&chan->data_q); | |
3753 | ||
73d80deb | 3754 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3755 | bt_cb(skb)->force_active); |
04837f64 | 3756 | |
57d17d70 | 3757 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3758 | hdev->acl_last_tx = jiffies; |
3759 | ||
3760 | hdev->acl_cnt--; | |
73d80deb LAD |
3761 | chan->sent++; |
3762 | chan->conn->sent++; | |
1da177e4 LT |
3763 | } |
3764 | } | |
02b20f0b LAD |
3765 | |
3766 | if (cnt != hdev->acl_cnt) | |
3767 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3768 | } |
3769 | ||
6039aa73 | 3770 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3771 | { |
63d2bc1b | 3772 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3773 | struct hci_chan *chan; |
3774 | struct sk_buff *skb; | |
3775 | int quote; | |
bd1eb66b | 3776 | u8 type; |
b71d385a | 3777 | |
63d2bc1b | 3778 | __check_timeout(hdev, cnt); |
b71d385a | 3779 | |
bd1eb66b AE |
3780 | BT_DBG("%s", hdev->name); |
3781 | ||
3782 | if (hdev->dev_type == HCI_AMP) | |
3783 | type = AMP_LINK; | |
3784 | else | |
3785 | type = ACL_LINK; | |
3786 | ||
b71d385a | 3787 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3788 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3789 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3790 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3791 | int blocks; | |
3792 | ||
3793 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3794 | skb->len, skb->priority); |
b71d385a AE |
3795 | |
3796 | /* Stop if priority has changed */ | |
3797 | if (skb->priority < priority) | |
3798 | break; | |
3799 | ||
3800 | skb = skb_dequeue(&chan->data_q); | |
3801 | ||
3802 | blocks = __get_blocks(hdev, skb); | |
3803 | if (blocks > hdev->block_cnt) | |
3804 | return; | |
3805 | ||
3806 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3807 | bt_cb(skb)->force_active); |
b71d385a | 3808 | |
57d17d70 | 3809 | hci_send_frame(hdev, skb); |
b71d385a AE |
3810 | hdev->acl_last_tx = jiffies; |
3811 | ||
3812 | hdev->block_cnt -= blocks; | |
3813 | quote -= blocks; | |
3814 | ||
3815 | chan->sent += blocks; | |
3816 | chan->conn->sent += blocks; | |
3817 | } | |
3818 | } | |
3819 | ||
3820 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3821 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3822 | } |
3823 | ||
6039aa73 | 3824 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3825 | { |
3826 | BT_DBG("%s", hdev->name); | |
3827 | ||
bd1eb66b AE |
3828 | /* No ACL link over BR/EDR controller */ |
3829 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3830 | return; | |
3831 | ||
3832 | /* No AMP link over AMP controller */ | |
3833 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3834 | return; |
3835 | ||
3836 | switch (hdev->flow_ctl_mode) { | |
3837 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3838 | hci_sched_acl_pkt(hdev); | |
3839 | break; | |
3840 | ||
3841 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3842 | hci_sched_acl_blk(hdev); | |
3843 | break; | |
3844 | } | |
3845 | } | |
3846 | ||
1da177e4 | 3847 | /* Schedule SCO */ |
6039aa73 | 3848 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3849 | { |
3850 | struct hci_conn *conn; | |
3851 | struct sk_buff *skb; | |
3852 | int quote; | |
3853 | ||
3854 | BT_DBG("%s", hdev->name); | |
3855 | ||
52087a79 LAD |
3856 | if (!hci_conn_num(hdev, SCO_LINK)) |
3857 | return; | |
3858 | ||
1da177e4 LT |
3859 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3860 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3861 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3862 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3863 | |
3864 | conn->sent++; | |
3865 | if (conn->sent == ~0) | |
3866 | conn->sent = 0; | |
3867 | } | |
3868 | } | |
3869 | } | |
3870 | ||
6039aa73 | 3871 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3872 | { |
3873 | struct hci_conn *conn; | |
3874 | struct sk_buff *skb; | |
3875 | int quote; | |
3876 | ||
3877 | BT_DBG("%s", hdev->name); | |
3878 | ||
52087a79 LAD |
3879 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3880 | return; | |
3881 | ||
8fc9ced3 GP |
3882 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3883 | "e))) { | |
b6a0dc82 MH |
3884 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3885 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3886 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3887 | |
3888 | conn->sent++; | |
3889 | if (conn->sent == ~0) | |
3890 | conn->sent = 0; | |
3891 | } | |
3892 | } | |
3893 | } | |
3894 | ||
6039aa73 | 3895 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3896 | { |
73d80deb | 3897 | struct hci_chan *chan; |
6ed58ec5 | 3898 | struct sk_buff *skb; |
02b20f0b | 3899 | int quote, cnt, tmp; |
6ed58ec5 VT |
3900 | |
3901 | BT_DBG("%s", hdev->name); | |
3902 | ||
52087a79 LAD |
3903 | if (!hci_conn_num(hdev, LE_LINK)) |
3904 | return; | |
3905 | ||
d7a5a11d | 3906 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
6ed58ec5 VT |
3907 | /* LE tx timeout must be longer than maximum |
3908 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3909 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3910 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3911 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3912 | } |
3913 | ||
3914 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3915 | tmp = cnt; |
73d80deb | 3916 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3917 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3918 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3919 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3920 | skb->len, skb->priority); |
6ed58ec5 | 3921 | |
ec1cce24 LAD |
3922 | /* Stop if priority has changed */ |
3923 | if (skb->priority < priority) | |
3924 | break; | |
3925 | ||
3926 | skb = skb_dequeue(&chan->data_q); | |
3927 | ||
57d17d70 | 3928 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3929 | hdev->le_last_tx = jiffies; |
3930 | ||
3931 | cnt--; | |
73d80deb LAD |
3932 | chan->sent++; |
3933 | chan->conn->sent++; | |
6ed58ec5 VT |
3934 | } |
3935 | } | |
73d80deb | 3936 | |
6ed58ec5 VT |
3937 | if (hdev->le_pkts) |
3938 | hdev->le_cnt = cnt; | |
3939 | else | |
3940 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3941 | |
3942 | if (cnt != tmp) | |
3943 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3944 | } |
3945 | ||
3eff45ea | 3946 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3947 | { |
3eff45ea | 3948 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3949 | struct sk_buff *skb; |
3950 | ||
6ed58ec5 | 3951 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3952 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3953 | |
d7a5a11d | 3954 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
52de599e MH |
3955 | /* Schedule queues and send stuff to HCI driver */ |
3956 | hci_sched_acl(hdev); | |
3957 | hci_sched_sco(hdev); | |
3958 | hci_sched_esco(hdev); | |
3959 | hci_sched_le(hdev); | |
3960 | } | |
6ed58ec5 | 3961 | |
1da177e4 LT |
3962 | /* Send next queued raw (unknown type) packet */ |
3963 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3964 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3965 | } |
3966 | ||
25985edc | 3967 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3968 | |
3969 | /* ACL data packet */ | |
6039aa73 | 3970 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3971 | { |
3972 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3973 | struct hci_conn *conn; | |
3974 | __u16 handle, flags; | |
3975 | ||
3976 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3977 | ||
3978 | handle = __le16_to_cpu(hdr->handle); | |
3979 | flags = hci_flags(handle); | |
3980 | handle = hci_handle(handle); | |
3981 | ||
f0e09510 | 3982 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3983 | handle, flags); |
1da177e4 LT |
3984 | |
3985 | hdev->stat.acl_rx++; | |
3986 | ||
3987 | hci_dev_lock(hdev); | |
3988 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3989 | hci_dev_unlock(hdev); | |
8e87d142 | 3990 | |
1da177e4 | 3991 | if (conn) { |
65983fc7 | 3992 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3993 | |
1da177e4 | 3994 | /* Send to upper protocol */ |
686ebf28 UF |
3995 | l2cap_recv_acldata(conn, skb, flags); |
3996 | return; | |
1da177e4 | 3997 | } else { |
8e87d142 | 3998 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3999 | hdev->name, handle); |
1da177e4 LT |
4000 | } |
4001 | ||
4002 | kfree_skb(skb); | |
4003 | } | |
4004 | ||
4005 | /* SCO data packet */ | |
6039aa73 | 4006 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4007 | { |
4008 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4009 | struct hci_conn *conn; | |
4010 | __u16 handle; | |
4011 | ||
4012 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4013 | ||
4014 | handle = __le16_to_cpu(hdr->handle); | |
4015 | ||
f0e09510 | 4016 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4017 | |
4018 | hdev->stat.sco_rx++; | |
4019 | ||
4020 | hci_dev_lock(hdev); | |
4021 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4022 | hci_dev_unlock(hdev); | |
4023 | ||
4024 | if (conn) { | |
1da177e4 | 4025 | /* Send to upper protocol */ |
686ebf28 UF |
4026 | sco_recv_scodata(conn, skb); |
4027 | return; | |
1da177e4 | 4028 | } else { |
8e87d142 | 4029 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4030 | hdev->name, handle); |
1da177e4 LT |
4031 | } |
4032 | ||
4033 | kfree_skb(skb); | |
4034 | } | |
4035 | ||
9238f36a JH |
4036 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4037 | { | |
4038 | struct sk_buff *skb; | |
4039 | ||
4040 | skb = skb_peek(&hdev->cmd_q); | |
4041 | if (!skb) | |
4042 | return true; | |
4043 | ||
44d27137 | 4044 | return (bt_cb(skb)->hci.req_flags & HCI_REQ_START); |
9238f36a JH |
4045 | } |
4046 | ||
42c6b129 JH |
4047 | static void hci_resend_last(struct hci_dev *hdev) |
4048 | { | |
4049 | struct hci_command_hdr *sent; | |
4050 | struct sk_buff *skb; | |
4051 | u16 opcode; | |
4052 | ||
4053 | if (!hdev->sent_cmd) | |
4054 | return; | |
4055 | ||
4056 | sent = (void *) hdev->sent_cmd->data; | |
4057 | opcode = __le16_to_cpu(sent->opcode); | |
4058 | if (opcode == HCI_OP_RESET) | |
4059 | return; | |
4060 | ||
4061 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4062 | if (!skb) | |
4063 | return; | |
4064 | ||
4065 | skb_queue_head(&hdev->cmd_q, skb); | |
4066 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4067 | } | |
4068 | ||
e6214487 JH |
4069 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
4070 | hci_req_complete_t *req_complete, | |
4071 | hci_req_complete_skb_t *req_complete_skb) | |
9238f36a | 4072 | { |
9238f36a JH |
4073 | struct sk_buff *skb; |
4074 | unsigned long flags; | |
4075 | ||
4076 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4077 | ||
42c6b129 JH |
4078 | /* If the completed command doesn't match the last one that was |
4079 | * sent we need to do special handling of it. | |
9238f36a | 4080 | */ |
42c6b129 JH |
4081 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4082 | /* Some CSR based controllers generate a spontaneous | |
4083 | * reset complete event during init and any pending | |
4084 | * command will never be completed. In such a case we | |
4085 | * need to resend whatever was the last sent | |
4086 | * command. | |
4087 | */ | |
4088 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4089 | hci_resend_last(hdev); | |
4090 | ||
9238f36a | 4091 | return; |
42c6b129 | 4092 | } |
9238f36a JH |
4093 | |
4094 | /* If the command succeeded and there's still more commands in | |
4095 | * this request the request is not yet complete. | |
4096 | */ | |
4097 | if (!status && !hci_req_is_complete(hdev)) | |
4098 | return; | |
4099 | ||
4100 | /* If this was the last command in a request the complete | |
4101 | * callback would be found in hdev->sent_cmd instead of the | |
4102 | * command queue (hdev->cmd_q). | |
4103 | */ | |
44d27137 JH |
4104 | if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) { |
4105 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; | |
e6214487 JH |
4106 | return; |
4107 | } | |
53e21fbc | 4108 | |
44d27137 JH |
4109 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
4110 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; | |
e6214487 | 4111 | return; |
9238f36a JH |
4112 | } |
4113 | ||
4114 | /* Remove all pending commands belonging to this request */ | |
4115 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4116 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
44d27137 | 4117 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) { |
9238f36a JH |
4118 | __skb_queue_head(&hdev->cmd_q, skb); |
4119 | break; | |
4120 | } | |
4121 | ||
3bd7594e DA |
4122 | if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB) |
4123 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; | |
4124 | else | |
4125 | *req_complete = bt_cb(skb)->hci.req_complete; | |
9238f36a JH |
4126 | kfree_skb(skb); |
4127 | } | |
4128 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
9238f36a JH |
4129 | } |
4130 | ||
b78752cc | 4131 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4132 | { |
b78752cc | 4133 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4134 | struct sk_buff *skb; |
4135 | ||
4136 | BT_DBG("%s", hdev->name); | |
4137 | ||
1da177e4 | 4138 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4139 | /* Send copy to monitor */ |
4140 | hci_send_to_monitor(hdev, skb); | |
4141 | ||
1da177e4 LT |
4142 | if (atomic_read(&hdev->promisc)) { |
4143 | /* Send copy to the sockets */ | |
470fe1b5 | 4144 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4145 | } |
4146 | ||
d7a5a11d | 4147 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
1da177e4 LT |
4148 | kfree_skb(skb); |
4149 | continue; | |
4150 | } | |
4151 | ||
4152 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4153 | /* Don't process data packets in this states. */ | |
d79f34e3 | 4154 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 LT |
4155 | case HCI_ACLDATA_PKT: |
4156 | case HCI_SCODATA_PKT: | |
4157 | kfree_skb(skb); | |
4158 | continue; | |
3ff50b79 | 4159 | } |
1da177e4 LT |
4160 | } |
4161 | ||
4162 | /* Process frame */ | |
d79f34e3 | 4163 | switch (hci_skb_pkt_type(skb)) { |
1da177e4 | 4164 | case HCI_EVENT_PKT: |
b78752cc | 4165 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4166 | hci_event_packet(hdev, skb); |
4167 | break; | |
4168 | ||
4169 | case HCI_ACLDATA_PKT: | |
4170 | BT_DBG("%s ACL data packet", hdev->name); | |
4171 | hci_acldata_packet(hdev, skb); | |
4172 | break; | |
4173 | ||
4174 | case HCI_SCODATA_PKT: | |
4175 | BT_DBG("%s SCO data packet", hdev->name); | |
4176 | hci_scodata_packet(hdev, skb); | |
4177 | break; | |
4178 | ||
4179 | default: | |
4180 | kfree_skb(skb); | |
4181 | break; | |
4182 | } | |
4183 | } | |
1da177e4 LT |
4184 | } |
4185 | ||
c347b765 | 4186 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4187 | { |
c347b765 | 4188 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4189 | struct sk_buff *skb; |
4190 | ||
2104786b AE |
4191 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4192 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4193 | |
1da177e4 | 4194 | /* Send queued commands */ |
5a08ecce AE |
4195 | if (atomic_read(&hdev->cmd_cnt)) { |
4196 | skb = skb_dequeue(&hdev->cmd_q); | |
4197 | if (!skb) | |
4198 | return; | |
4199 | ||
7585b97a | 4200 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4201 | |
a675d7f1 | 4202 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4203 | if (hdev->sent_cmd) { |
1da177e4 | 4204 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4205 | hci_send_frame(hdev, skb); |
7bdb8a5c | 4206 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 4207 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 4208 | else |
65cc2b49 MH |
4209 | schedule_delayed_work(&hdev->cmd_timer, |
4210 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
4211 | } else { |
4212 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4213 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4214 | } |
4215 | } | |
4216 | } |