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YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
Gustavo F. Padovan590051d2011-12-18 13:39:33 -02004 Copyright (C) 2011 ProFUSION Embedded Systems
Linus Torvalds1da177e2005-04-16 15:20:36 -07005
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
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090016 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090021 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 SOFTWARE IS DISCLAIMED.
24*/
25
26/* Bluetooth HCI core. */
27
Gustavo Padovan8c520a52012-05-23 04:04:22 -030028#include <linux/export.h>
Sasha Levin3df92b32012-05-27 22:36:56 +020029#include <linux/idr.h>
Marcel Holtmann611b30f2009-06-08 14:41:38 +020030#include <linux/rfkill.h>
Marcel Holtmannbaf27f62013-10-16 03:28:55 -070031#include <linux/debugfs.h>
Johan Hedberg99780a72014-02-18 10:40:07 +020032#include <linux/crypto.h>
Marcel Holtmann47219832013-10-17 17:24:15 -070033#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35#include <net/bluetooth/bluetooth.h>
36#include <net/bluetooth/hci_core.h>
Johan Hedberg4bc58f52014-05-20 09:45:47 +030037#include <net/bluetooth/l2cap.h>
Marcel Holtmannaf589252014-07-01 14:11:20 +020038#include <net/bluetooth/mgmt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Johan Hedberg0857dd32014-12-19 13:40:20 +020040#include "hci_request.h"
Marcel Holtmann60c5f5f2014-12-20 16:05:13 +010041#include "hci_debugfs.h"
Johan Hedberg970c4e42014-02-18 10:19:33 +020042#include "smp.h"
Heiner Kallweit6d5d2ee2016-01-08 19:28:58 +010043#include "leds.h"
Johan Hedberg970c4e42014-02-18 10:19:33 +020044
Marcel Holtmannb78752c2010-08-08 23:06:53 -040045static void hci_rx_work(struct work_struct *work);
Gustavo F. Padovanc347b762011-12-14 23:53:47 -020046static void hci_cmd_work(struct work_struct *work);
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -020047static void hci_tx_work(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Linus Torvalds1da177e2005-04-16 15:20:36 -070049/* HCI device list */
50LIST_HEAD(hci_dev_list);
51DEFINE_RWLOCK(hci_dev_list_lock);
52
53/* HCI callback list */
54LIST_HEAD(hci_cb_list);
Johan Hedbergfba7ecf2015-02-18 14:53:55 +020055DEFINE_MUTEX(hci_cb_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Sasha Levin3df92b32012-05-27 22:36:56 +020057/* HCI ID Numbering */
58static DEFINE_IDA(hci_index_ida);
59
Marcel Holtmannbaf27f62013-10-16 03:28:55 -070060/* ---- HCI debugfs entries ---- */
61
Marcel Holtmann4b4148e2013-10-19 07:09:12 -070062static 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
Prasanna Karthik74b93e92015-11-18 12:38:41 +000068 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
Marcel Holtmann4b4148e2013-10-19 07:09:12 -070069 buf[1] = '\n';
70 buf[2] = '\0';
71 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
72}
73
74static 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;
Marcel Holtmann4b4148e2013-10-19 07:09:12 -070082
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
Marcel Holtmannb7cb93e2015-03-13 10:20:35 -070093 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
Marcel Holtmann4b4148e2013-10-19 07:09:12 -070094 return -EALREADY;
95
Johan Hedbergb5044302015-11-10 09:44:55 +020096 hci_req_sync_lock(hdev);
Marcel Holtmann4b4148e2013-10-19 07:09:12 -070097 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);
Johan Hedbergb5044302015-11-10 09:44:55 +0200103 hci_req_sync_unlock(hdev);
Marcel Holtmann4b4148e2013-10-19 07:09:12 -0700104
105 if (IS_ERR(skb))
106 return PTR_ERR(skb);
107
Marcel Holtmann4b4148e2013-10-19 07:09:12 -0700108 kfree_skb(skb);
109
Marcel Holtmannb7cb93e2015-03-13 10:20:35 -0700110 hci_dev_change_flag(hdev, HCI_DUT_MODE);
Marcel Holtmann4b4148e2013-10-19 07:09:12 -0700111
112 return count;
113}
114
115static 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
Marcel Holtmann4b4113d2015-10-07 19:52:35 +0200122static 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
Prasanna Karthik74b93e92015-11-18 12:38:41 +0000128 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
Marcel Holtmann4b4113d2015-10-07 19:52:35 +0200129 buf[1] = '\n';
130 buf[2] = '\0';
131 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
132}
133
134static 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
Marcel Holtmann7e995b92015-10-17 16:00:26 +0200150 /* 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
Johan Hedbergb5044302015-11-10 09:44:55 +0200160 hci_req_sync_lock(hdev);
Marcel Holtmann4b4113d2015-10-07 19:52:35 +0200161 err = hdev->set_diag(hdev, enable);
Johan Hedbergb5044302015-11-10 09:44:55 +0200162 hci_req_sync_unlock(hdev);
Marcel Holtmann4b4113d2015-10-07 19:52:35 +0200163
164 if (err < 0)
165 return err;
166
Marcel Holtmann7e995b92015-10-17 16:00:26 +0200167done:
Marcel Holtmann4b4113d2015-10-07 19:52:35 +0200168 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
176static 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
Marcel Holtmannf640ee92015-10-08 12:35:42 +0200183static 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
Johan Hedberga1d01db2015-11-11 08:11:25 +0200193static int hci_reset_req(struct hci_request *req, unsigned long opt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200195 BT_DBG("%s %ld", req->hdev->name, opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197 /* Reset device */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200198 set_bit(HCI_RESET, &req->hdev->flags);
199 hci_req_add(req, HCI_OP_RESET, 0, NULL);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200200 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201}
202
Johan Hedberg42c6b122013-03-05 20:37:49 +0200203static void bredr_init(struct hci_request *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200205 req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
Andrei Emeltchenko2455a3e2011-12-19 16:31:28 +0200206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 /* Read Local Supported Features */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200208 hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Marcel Holtmann1143e5a2006-09-23 09:57:20 +0200210 /* Read Local Version */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200211 hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200212
213 /* Read BD Address */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200214 hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215}
216
Johan Hedberg0af801b2015-02-17 15:05:21 +0200217static void amp_init1(struct hci_request *req)
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200218{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200219 req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
Andrei Emeltchenko2455a3e2011-12-19 16:31:28 +0200220
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200221 /* Read Local Version */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200222 hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
Andrei Emeltchenko6bcbc482012-03-28 16:31:24 +0300223
Marcel Holtmannf6996cf2013-10-07 02:31:39 -0700224 /* Read Local Supported Commands */
225 hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
226
Andrei Emeltchenko6bcbc482012-03-28 16:31:24 +0300227 /* Read Local AMP Info */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200228 hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
Andrei Emeltchenkoe71dfab2012-09-06 15:05:46 +0300229
230 /* Read Data Blk size */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200231 hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL);
Marcel Holtmann7528ca12013-10-07 03:55:52 -0700232
Marcel Holtmannf38ba942013-10-07 03:55:53 -0700233 /* Read Flow Control Mode */
234 hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL);
235
Marcel Holtmann7528ca12013-10-07 03:55:52 -0700236 /* Read Location Data */
237 hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL);
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200238}
239
Johan Hedberga1d01db2015-11-11 08:11:25 +0200240static int amp_init2(struct hci_request *req)
Johan Hedberg0af801b2015-02-17 15:05:21 +0200241{
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);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200248
249 return 0;
Johan Hedberg0af801b2015-02-17 15:05:21 +0200250}
251
Johan Hedberga1d01db2015-11-11 08:11:25 +0200252static int hci_init1_req(struct hci_request *req, unsigned long opt)
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200253{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200254 struct hci_dev *hdev = req->hdev;
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200255
256 BT_DBG("%s %ld", hdev->name, opt);
257
Andrei Emeltchenko11778712012-06-11 11:13:10 +0300258 /* Reset */
259 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200260 hci_reset_req(req, 0);
Andrei Emeltchenko11778712012-06-11 11:13:10 +0300261
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200262 switch (hdev->dev_type) {
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200263 case HCI_PRIMARY:
Johan Hedberg42c6b122013-03-05 20:37:49 +0200264 bredr_init(req);
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200265 break;
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200266 case HCI_AMP:
Johan Hedberg0af801b2015-02-17 15:05:21 +0200267 amp_init1(req);
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200268 break;
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200269 default:
270 BT_ERR("Unknown device type %d", hdev->dev_type);
271 break;
272 }
Johan Hedberga1d01db2015-11-11 08:11:25 +0200273
274 return 0;
Andrei Emeltchenkoe61ef4992011-12-19 16:31:27 +0200275}
276
Johan Hedberg42c6b122013-03-05 20:37:49 +0200277static void bredr_setup(struct hci_request *req)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200278{
Johan Hedberg2177bab2013-03-05 20:37:43 +0200279 __le16 param;
280 __u8 flt_type;
281
282 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200283 hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200284
285 /* Read Class of Device */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200286 hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200287
288 /* Read Local Name */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200289 hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200290
291 /* Read Voice Setting */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200292 hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200293
Marcel Holtmannb4cb9fb2013-10-14 13:56:16 -0700294 /* Read Number of Supported IAC */
295 hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL);
296
Marcel Holtmann4b836f32013-10-14 14:06:36 -0700297 /* Read Current IAC LAP */
298 hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL);
299
Johan Hedberg2177bab2013-03-05 20:37:43 +0200300 /* Clear Event Filters */
301 flt_type = HCI_FLT_CLEAR_ALL;
Johan Hedberg42c6b122013-03-05 20:37:49 +0200302 hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200303
304 /* Connection accept timeout ~20 secs */
Joe Perchesdcf4adb2014-03-12 10:52:35 -0700305 param = cpu_to_le16(0x7d00);
Johan Hedberg42c6b122013-03-05 20:37:49 +0200306 hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, &param);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200307}
308
Johan Hedberg42c6b122013-03-05 20:37:49 +0200309static void le_setup(struct hci_request *req)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200310{
Johan Hedbergc73eee92013-04-19 18:35:21 +0300311 struct hci_dev *hdev = req->hdev;
312
Johan Hedberg2177bab2013-03-05 20:37:43 +0200313 /* Read LE Buffer Size */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200314 hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200315
316 /* Read LE Local Supported Features */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200317 hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200318
Marcel Holtmann747d3f02014-02-27 20:37:29 -0800319 /* Read LE Supported States */
320 hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
321
Johan Hedbergc73eee92013-04-19 18:35:21 +0300322 /* LE-only controllers have LE implicitly enabled */
323 if (!lmp_bredr_capable(hdev))
Marcel Holtmanna1536da2015-03-13 02:11:01 -0700324 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200325}
326
Johan Hedberg42c6b122013-03-05 20:37:49 +0200327static void hci_setup_event_mask(struct hci_request *req)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200328{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200329 struct hci_dev *hdev = req->hdev;
330
Johan Hedberg2177bab2013-03-05 20:37:43 +0200331 /* The second byte is 0xff instead of 0x9f (two reserved bits
332 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
333 * command otherwise.
334 */
335 u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
336
337 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
338 * any event mask for pre 1.2 devices.
339 */
340 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
341 return;
342
343 if (lmp_bredr_capable(hdev)) {
344 events[4] |= 0x01; /* Flow Specification Complete */
Marcel Holtmannc7882cb2013-08-13 10:00:54 -0700345 } else {
346 /* Use a different default for LE-only devices */
347 memset(events, 0, sizeof(events));
Marcel Holtmannc7882cb2013-08-13 10:00:54 -0700348 events[1] |= 0x20; /* Command Complete */
349 events[1] |= 0x40; /* Command Status */
350 events[1] |= 0x80; /* Hardware Error */
Marcel Holtmann5c3d3b42015-11-04 07:17:23 +0100351
352 /* If the controller supports the Disconnect command, enable
353 * the corresponding event. In addition enable packet flow
354 * control related events.
355 */
356 if (hdev->commands[0] & 0x20) {
357 events[0] |= 0x10; /* Disconnection Complete */
358 events[2] |= 0x04; /* Number of Completed Packets */
359 events[3] |= 0x02; /* Data Buffer Overflow */
360 }
361
362 /* If the controller supports the Read Remote Version
363 * Information command, enable the corresponding event.
364 */
365 if (hdev->commands[2] & 0x80)
366 events[1] |= 0x08; /* Read Remote Version Information
367 * Complete
368 */
Marcel Holtmann0da71f12014-07-12 23:36:16 +0200369
370 if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
371 events[0] |= 0x80; /* Encryption Change */
372 events[5] |= 0x80; /* Encryption Key Refresh Complete */
373 }
Johan Hedberg2177bab2013-03-05 20:37:43 +0200374 }
375
Marcel Holtmann9fe759c2015-11-01 09:45:22 +0100376 if (lmp_inq_rssi_capable(hdev) ||
377 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
Johan Hedberg2177bab2013-03-05 20:37:43 +0200378 events[4] |= 0x02; /* Inquiry Result with RSSI */
379
Marcel Holtmann70f56aa2015-11-01 09:39:49 +0100380 if (lmp_ext_feat_capable(hdev))
381 events[4] |= 0x04; /* Read Remote Extended Features Complete */
382
383 if (lmp_esco_capable(hdev)) {
384 events[5] |= 0x08; /* Synchronous Connection Complete */
385 events[5] |= 0x10; /* Synchronous Connection Changed */
386 }
387
Johan Hedberg2177bab2013-03-05 20:37:43 +0200388 if (lmp_sniffsubr_capable(hdev))
389 events[5] |= 0x20; /* Sniff Subrating */
390
391 if (lmp_pause_enc_capable(hdev))
392 events[5] |= 0x80; /* Encryption Key Refresh Complete */
393
394 if (lmp_ext_inq_capable(hdev))
395 events[5] |= 0x40; /* Extended Inquiry Result */
396
397 if (lmp_no_flush_capable(hdev))
398 events[7] |= 0x01; /* Enhanced Flush Complete */
399
400 if (lmp_lsto_capable(hdev))
401 events[6] |= 0x80; /* Link Supervision Timeout Changed */
402
403 if (lmp_ssp_capable(hdev)) {
404 events[6] |= 0x01; /* IO Capability Request */
405 events[6] |= 0x02; /* IO Capability Response */
406 events[6] |= 0x04; /* User Confirmation Request */
407 events[6] |= 0x08; /* User Passkey Request */
408 events[6] |= 0x10; /* Remote OOB Data Request */
409 events[6] |= 0x20; /* Simple Pairing Complete */
410 events[7] |= 0x04; /* User Passkey Notification */
411 events[7] |= 0x08; /* Keypress Notification */
412 events[7] |= 0x10; /* Remote Host Supported
413 * Features Notification
414 */
415 }
416
417 if (lmp_le_capable(hdev))
418 events[7] |= 0x20; /* LE Meta-Event */
419
Johan Hedberg42c6b122013-03-05 20:37:49 +0200420 hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200421}
422
Johan Hedberga1d01db2015-11-11 08:11:25 +0200423static int hci_init2_req(struct hci_request *req, unsigned long opt)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200424{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200425 struct hci_dev *hdev = req->hdev;
426
Johan Hedberg0af801b2015-02-17 15:05:21 +0200427 if (hdev->dev_type == HCI_AMP)
428 return amp_init2(req);
429
Johan Hedberg2177bab2013-03-05 20:37:43 +0200430 if (lmp_bredr_capable(hdev))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200431 bredr_setup(req);
Johan Hedberg56f87902013-10-02 13:43:13 +0300432 else
Marcel Holtmanna358dc12015-03-13 02:11:02 -0700433 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200434
435 if (lmp_le_capable(hdev))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200436 le_setup(req);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200437
Marcel Holtmann0f3adea2014-12-26 04:42:34 +0100438 /* All Bluetooth 1.2 and later controllers should support the
439 * HCI command for reading the local supported commands.
440 *
441 * Unfortunately some controllers indicate Bluetooth 1.2 support,
442 * but do not have support for this command. If that is the case,
443 * the driver can quirk the behavior and skip reading the local
444 * supported commands.
Johan Hedberg3f8e2d72013-07-24 02:32:46 +0300445 */
Marcel Holtmann0f3adea2014-12-26 04:42:34 +0100446 if (hdev->hci_ver > BLUETOOTH_VER_1_1 &&
447 !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200448 hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200449
450 if (lmp_ssp_capable(hdev)) {
Marcel Holtmann57af75a2013-10-18 12:04:47 -0700451 /* When SSP is available, then the host features page
452 * should also be available as well. However some
453 * controllers list the max_page as 0 as long as SSP
454 * has not been enabled. To achieve proper debugging
455 * output, force the minimum max_page to 1 at least.
456 */
457 hdev->max_page = 0x01;
458
Marcel Holtmannd7a5a112015-03-13 02:11:00 -0700459 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
Johan Hedberg2177bab2013-03-05 20:37:43 +0200460 u8 mode = 0x01;
Marcel Holtmann574ea3c2015-01-22 11:15:20 -0800461
Johan Hedberg42c6b122013-03-05 20:37:49 +0200462 hci_req_add(req, HCI_OP_WRITE_SSP_MODE,
463 sizeof(mode), &mode);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200464 } else {
465 struct hci_cp_write_eir cp;
466
467 memset(hdev->eir, 0, sizeof(hdev->eir));
468 memset(&cp, 0, sizeof(cp));
469
Johan Hedberg42c6b122013-03-05 20:37:49 +0200470 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200471 }
472 }
473
Marcel Holtmann043ec9b2015-01-02 23:35:19 -0800474 if (lmp_inq_rssi_capable(hdev) ||
475 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) {
Marcel Holtmann04422da2015-01-02 23:35:18 -0800476 u8 mode;
477
478 /* If Extended Inquiry Result events are supported, then
479 * they are clearly preferred over Inquiry Result with RSSI
480 * events.
481 */
482 mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01;
483
484 hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode);
485 }
Johan Hedberg2177bab2013-03-05 20:37:43 +0200486
487 if (lmp_inq_tx_pwr_capable(hdev))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200488 hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200489
490 if (lmp_ext_feat_capable(hdev)) {
491 struct hci_cp_read_local_ext_features cp;
492
493 cp.page = 0x01;
Johan Hedberg42c6b122013-03-05 20:37:49 +0200494 hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES,
495 sizeof(cp), &cp);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200496 }
497
Marcel Holtmannd7a5a112015-03-13 02:11:00 -0700498 if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) {
Johan Hedberg2177bab2013-03-05 20:37:43 +0200499 u8 enable = 1;
Johan Hedberg42c6b122013-03-05 20:37:49 +0200500 hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable),
501 &enable);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200502 }
Johan Hedberga1d01db2015-11-11 08:11:25 +0200503
504 return 0;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200505}
506
Johan Hedberg42c6b122013-03-05 20:37:49 +0200507static void hci_setup_link_policy(struct hci_request *req)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200508{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200509 struct hci_dev *hdev = req->hdev;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200510 struct hci_cp_write_def_link_policy cp;
511 u16 link_policy = 0;
512
513 if (lmp_rswitch_capable(hdev))
514 link_policy |= HCI_LP_RSWITCH;
515 if (lmp_hold_capable(hdev))
516 link_policy |= HCI_LP_HOLD;
517 if (lmp_sniff_capable(hdev))
518 link_policy |= HCI_LP_SNIFF;
519 if (lmp_park_capable(hdev))
520 link_policy |= HCI_LP_PARK;
521
522 cp.policy = cpu_to_le16(link_policy);
Johan Hedberg42c6b122013-03-05 20:37:49 +0200523 hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200524}
525
Johan Hedberg42c6b122013-03-05 20:37:49 +0200526static void hci_set_le_support(struct hci_request *req)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200527{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200528 struct hci_dev *hdev = req->hdev;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200529 struct hci_cp_write_le_host_supported cp;
530
Johan Hedbergc73eee92013-04-19 18:35:21 +0300531 /* LE-only devices do not support explicit enablement */
532 if (!lmp_bredr_capable(hdev))
533 return;
534
Johan Hedberg2177bab2013-03-05 20:37:43 +0200535 memset(&cp, 0, sizeof(cp));
536
Marcel Holtmannd7a5a112015-03-13 02:11:00 -0700537 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
Johan Hedberg2177bab2013-03-05 20:37:43 +0200538 cp.le = 0x01;
Marcel Holtmann32226e42014-07-24 20:04:16 +0200539 cp.simul = 0x00;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200540 }
541
542 if (cp.le != lmp_host_le_capable(hdev))
Johan Hedberg42c6b122013-03-05 20:37:49 +0200543 hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp),
544 &cp);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200545}
546
Johan Hedbergd62e6d62013-09-13 11:40:02 +0300547static void hci_set_event_mask_page_2(struct hci_request *req)
548{
549 struct hci_dev *hdev = req->hdev;
550 u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
551
552 /* If Connectionless Slave Broadcast master role is supported
553 * enable all necessary events for it.
554 */
Marcel Holtmann53b834d22013-12-08 11:55:33 -0800555 if (lmp_csb_master_capable(hdev)) {
Johan Hedbergd62e6d62013-09-13 11:40:02 +0300556 events[1] |= 0x40; /* Triggered Clock Capture */
557 events[1] |= 0x80; /* Synchronization Train Complete */
558 events[2] |= 0x10; /* Slave Page Response Timeout */
559 events[2] |= 0x20; /* CSB Channel Map Change */
560 }
561
562 /* If Connectionless Slave Broadcast slave role is supported
563 * enable all necessary events for it.
564 */
Marcel Holtmann53b834d22013-12-08 11:55:33 -0800565 if (lmp_csb_slave_capable(hdev)) {
Johan Hedbergd62e6d62013-09-13 11:40:02 +0300566 events[2] |= 0x01; /* Synchronization Train Received */
567 events[2] |= 0x02; /* CSB Receive */
568 events[2] |= 0x04; /* CSB Timeout */
569 events[2] |= 0x08; /* Truncated Page Complete */
570 }
571
Marcel Holtmann40c59fc2014-01-10 02:07:21 -0800572 /* Enable Authenticated Payload Timeout Expired event if supported */
Marcel Holtmanncd7ca0e2014-07-09 09:49:05 +0200573 if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING)
Marcel Holtmann40c59fc2014-01-10 02:07:21 -0800574 events[2] |= 0x80;
575
Johan Hedbergd62e6d62013-09-13 11:40:02 +0300576 hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events);
577}
578
Johan Hedberga1d01db2015-11-11 08:11:25 +0200579static int hci_init3_req(struct hci_request *req, unsigned long opt)
Johan Hedberg2177bab2013-03-05 20:37:43 +0200580{
Johan Hedberg42c6b122013-03-05 20:37:49 +0200581 struct hci_dev *hdev = req->hdev;
Johan Hedbergd2c5d772013-04-17 15:00:52 +0300582 u8 p;
Johan Hedberg42c6b122013-03-05 20:37:49 +0200583
Marcel Holtmann0da71f12014-07-12 23:36:16 +0200584 hci_setup_event_mask(req);
585
Johan Hedberge81be902015-08-30 21:47:20 +0300586 if (hdev->commands[6] & 0x20 &&
587 !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) {
Marcel Holtmann48ce62c2015-01-12 09:21:26 -0800588 struct hci_cp_read_stored_link_key cp;
589
590 bacpy(&cp.bdaddr, BDADDR_ANY);
591 cp.read_all = 0x01;
592 hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp);
593 }
594
Johan Hedberg2177bab2013-03-05 20:37:43 +0200595 if (hdev->commands[5] & 0x10)
Johan Hedberg42c6b122013-03-05 20:37:49 +0200596 hci_setup_link_policy(req);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200597
Marcel Holtmann417287d2014-12-11 20:21:54 +0100598 if (hdev->commands[8] & 0x01)
599 hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL);
600
601 /* Some older Broadcom based Bluetooth 1.2 controllers do not
602 * support the Read Page Scan Type command. Check support for
603 * this command in the bit mask of supported commands.
604 */
605 if (hdev->commands[13] & 0x01)
606 hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL);
607
Andre Guedes9193c6e2014-07-01 18:10:09 -0300608 if (lmp_le_capable(hdev)) {
609 u8 events[8];
610
611 memset(events, 0, sizeof(events));
Marcel Holtmann4d6c7052014-07-13 00:29:22 +0200612
613 if (hdev->le_features[0] & HCI_LE_ENCRYPTION)
614 events[0] |= 0x10; /* LE Long Term Key Request */
Andre Guedes662bc2e2014-07-01 18:10:10 -0300615
616 /* If controller supports the Connection Parameters Request
617 * Link Layer Procedure, enable the corresponding event.
618 */
619 if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
620 events[0] |= 0x20; /* LE Remote Connection
621 * Parameter Request
622 */
623
Marcel Holtmanna9f60682014-12-20 16:28:39 +0100624 /* If the controller supports the Data Length Extension
625 * feature, enable the corresponding event.
626 */
627 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
628 events[0] |= 0x40; /* LE Data Length Change */
629
Marcel Holtmann4b71bba2014-12-05 16:20:12 +0100630 /* If the controller supports Extended Scanner Filter
631 * Policies, enable the correspondig event.
632 */
633 if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)
634 events[1] |= 0x04; /* LE Direct Advertising
635 * Report
636 */
637
Marcel Holtmann7d26f5c2015-11-01 09:39:51 +0100638 /* If the controller supports the LE Set Scan Enable command,
639 * enable the corresponding advertising report event.
640 */
641 if (hdev->commands[26] & 0x08)
642 events[0] |= 0x02; /* LE Advertising Report */
643
644 /* If the controller supports the LE Create Connection
645 * command, enable the corresponding event.
646 */
647 if (hdev->commands[26] & 0x10)
648 events[0] |= 0x01; /* LE Connection Complete */
649
650 /* If the controller supports the LE Connection Update
651 * command, enable the corresponding event.
652 */
653 if (hdev->commands[27] & 0x04)
654 events[0] |= 0x04; /* LE Connection Update
655 * Complete
656 */
657
658 /* If the controller supports the LE Read Remote Used Features
659 * command, enable the corresponding event.
660 */
661 if (hdev->commands[27] & 0x20)
662 events[0] |= 0x08; /* LE Read Remote Used
663 * Features Complete
664 */
665
Marcel Holtmann5a34bd52014-12-05 16:20:15 +0100666 /* If the controller supports the LE Read Local P-256
667 * Public Key command, enable the corresponding event.
668 */
669 if (hdev->commands[34] & 0x02)
670 events[0] |= 0x80; /* LE Read Local P-256
671 * Public Key Complete
672 */
673
674 /* If the controller supports the LE Generate DHKey
675 * command, enable the corresponding event.
676 */
677 if (hdev->commands[34] & 0x04)
678 events[1] |= 0x01; /* LE Generate DHKey Complete */
679
Andre Guedes9193c6e2014-07-01 18:10:09 -0300680 hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events),
681 events);
682
Marcel Holtmann15a49cc2014-07-12 23:20:50 +0200683 if (hdev->commands[25] & 0x40) {
684 /* Read LE Advertising Channel TX Power */
685 hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
686 }
687
Marcel Holtmann2ab216a2015-11-01 09:39:48 +0100688 if (hdev->commands[26] & 0x40) {
689 /* Read LE White List Size */
690 hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE,
691 0, NULL);
692 }
693
694 if (hdev->commands[26] & 0x80) {
695 /* Clear LE White List */
696 hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL);
697 }
698
Marcel Holtmanna9f60682014-12-20 16:28:39 +0100699 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) {
700 /* Read LE Maximum Data Length */
701 hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL);
702
703 /* Read LE Suggested Default Data Length */
704 hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL);
705 }
706
Johan Hedberg42c6b122013-03-05 20:37:49 +0200707 hci_set_le_support(req);
Andre Guedes9193c6e2014-07-01 18:10:09 -0300708 }
Johan Hedbergd2c5d772013-04-17 15:00:52 +0300709
710 /* Read features beyond page 1 if available */
711 for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
712 struct hci_cp_read_local_ext_features cp;
713
714 cp.page = p;
715 hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES,
716 sizeof(cp), &cp);
717 }
Johan Hedberga1d01db2015-11-11 08:11:25 +0200718
719 return 0;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200720}
721
Johan Hedberga1d01db2015-11-11 08:11:25 +0200722static int hci_init4_req(struct hci_request *req, unsigned long opt)
Johan Hedberg5d4e7e82013-09-13 11:40:01 +0300723{
724 struct hci_dev *hdev = req->hdev;
725
Marcel Holtmann36f260c2015-01-12 22:47:22 -0800726 /* Some Broadcom based Bluetooth controllers do not support the
727 * Delete Stored Link Key command. They are clearly indicating its
728 * absence in the bit mask of supported commands.
729 *
730 * Check the supported commands and only if the the command is marked
731 * as supported send it. If not supported assume that the controller
732 * does not have actual support for stored link keys which makes this
733 * command redundant anyway.
734 *
735 * Some controllers indicate that they support handling deleting
736 * stored link keys, but they don't. The quirk lets a driver
737 * just disable this command.
738 */
739 if (hdev->commands[6] & 0x80 &&
740 !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) {
741 struct hci_cp_delete_stored_link_key cp;
742
743 bacpy(&cp.bdaddr, BDADDR_ANY);
744 cp.delete_all = 0x01;
745 hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY,
746 sizeof(cp), &cp);
747 }
748
Johan Hedbergd62e6d62013-09-13 11:40:02 +0300749 /* Set event mask page 2 if the HCI command for it is supported */
750 if (hdev->commands[22] & 0x04)
751 hci_set_event_mask_page_2(req);
752
Marcel Holtmann109e3192014-07-23 19:24:56 +0200753 /* Read local codec list if the HCI command is supported */
754 if (hdev->commands[29] & 0x20)
755 hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL);
756
Marcel Holtmannf4fe73e2014-07-23 19:24:57 +0200757 /* Get MWS transport configuration if the HCI command is supported */
758 if (hdev->commands[30] & 0x08)
759 hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL);
760
Johan Hedberg5d4e7e82013-09-13 11:40:01 +0300761 /* Check for Synchronization Train support */
Marcel Holtmann53b834d22013-12-08 11:55:33 -0800762 if (lmp_sync_train_capable(hdev))
Johan Hedberg5d4e7e82013-09-13 11:40:01 +0300763 hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL);
Marcel Holtmanna6d0d692014-01-10 02:07:24 -0800764
765 /* Enable Secure Connections if supported and configured */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -0700766 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
Marcel Holtmann574ea3c2015-01-22 11:15:20 -0800767 bredr_sc_enabled(hdev)) {
Marcel Holtmanna6d0d692014-01-10 02:07:24 -0800768 u8 support = 0x01;
Marcel Holtmann574ea3c2015-01-22 11:15:20 -0800769
Marcel Holtmanna6d0d692014-01-10 02:07:24 -0800770 hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT,
771 sizeof(support), &support);
772 }
Johan Hedberga1d01db2015-11-11 08:11:25 +0200773
774 return 0;
Johan Hedberg5d4e7e82013-09-13 11:40:01 +0300775}
776
Johan Hedberg2177bab2013-03-05 20:37:43 +0200777static int __hci_init(struct hci_dev *hdev)
778{
779 int err;
780
Johan Hedberg4ebeee22015-11-11 08:11:19 +0200781 err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200782 if (err < 0)
783 return err;
784
Marcel Holtmannf640ee92015-10-08 12:35:42 +0200785 if (hci_dev_test_flag(hdev, HCI_SETUP))
786 hci_debugfs_create_basic(hdev);
Marcel Holtmann4b4148e2013-10-19 07:09:12 -0700787
Johan Hedberg4ebeee22015-11-11 08:11:19 +0200788 err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT, NULL);
Johan Hedberg2177bab2013-03-05 20:37:43 +0200789 if (err < 0)
790 return err;
791
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200792 /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode
Johan Hedberg0af801b2015-02-17 15:05:21 +0200793 * BR/EDR/LE type controllers. AMP controllers only need the
794 * first two stages of init.
795 */
Marcel Holtmannca8bee52016-07-05 14:30:14 +0200796 if (hdev->dev_type != HCI_PRIMARY)
Johan Hedberg0af801b2015-02-17 15:05:21 +0200797 return 0;
798
Johan Hedberg4ebeee22015-11-11 08:11:19 +0200799 err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT, NULL);
Johan Hedberg5d4e7e82013-09-13 11:40:01 +0300800 if (err < 0)
801 return err;
802
Johan Hedberg4ebeee22015-11-11 08:11:19 +0200803 err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT, NULL);
Marcel Holtmannbaf27f62013-10-16 03:28:55 -0700804 if (err < 0)
805 return err;
806
Marcel Holtmannec6cef92015-01-01 02:05:16 -0800807 /* This function is only called when the controller is actually in
808 * configured state. When the controller is marked as unconfigured,
809 * this initialization procedure is not run.
810 *
811 * It means that it is possible that a controller runs through its
812 * setup phase and then discovers missing settings. If that is the
813 * case, then this function will not be called. It then will only
814 * be called during the config phase.
815 *
816 * So only when in setup phase or config phase, create the debugfs
817 * entries and register the SMP channels.
Marcel Holtmannbaf27f62013-10-16 03:28:55 -0700818 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -0700819 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
820 !hci_dev_test_flag(hdev, HCI_CONFIG))
Marcel Holtmannbaf27f62013-10-16 03:28:55 -0700821 return 0;
822
Marcel Holtmann60c5f5f2014-12-20 16:05:13 +0100823 hci_debugfs_create_common(hdev);
824
Marcel Holtmann71c3b602014-12-20 16:05:15 +0100825 if (lmp_bredr_capable(hdev))
Marcel Holtmann60c5f5f2014-12-20 16:05:13 +0100826 hci_debugfs_create_bredr(hdev);
Marcel Holtmann2bfa3532013-10-17 19:16:02 -0700827
Marcel Holtmann162a3ba2015-01-14 15:43:11 -0800828 if (lmp_le_capable(hdev))
Marcel Holtmann60c5f5f2014-12-20 16:05:13 +0100829 hci_debugfs_create_le(hdev);
Marcel Holtmanne7b8fc92013-10-17 11:45:09 -0700830
Marcel Holtmannbaf27f62013-10-16 03:28:55 -0700831 return 0;
Johan Hedberg2177bab2013-03-05 20:37:43 +0200832}
833
Johan Hedberga1d01db2015-11-11 08:11:25 +0200834static int hci_init0_req(struct hci_request *req, unsigned long opt)
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +0200835{
836 struct hci_dev *hdev = req->hdev;
837
838 BT_DBG("%s %ld", hdev->name, opt);
839
840 /* Reset */
841 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks))
842 hci_reset_req(req, 0);
843
844 /* Read Local Version */
845 hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
846
847 /* Read BD Address */
848 if (hdev->set_bdaddr)
849 hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200850
851 return 0;
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +0200852}
853
854static int __hci_unconf_init(struct hci_dev *hdev)
855{
856 int err;
857
Marcel Holtmanncc78b442014-07-06 13:43:20 +0200858 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
859 return 0;
860
Johan Hedberg4ebeee22015-11-11 08:11:19 +0200861 err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT, NULL);
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +0200862 if (err < 0)
863 return err;
864
Marcel Holtmannf640ee92015-10-08 12:35:42 +0200865 if (hci_dev_test_flag(hdev, HCI_SETUP))
866 hci_debugfs_create_basic(hdev);
867
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +0200868 return 0;
869}
870
Johan Hedberga1d01db2015-11-11 08:11:25 +0200871static int hci_scan_req(struct hci_request *req, unsigned long opt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872{
873 __u8 scan = opt;
874
Johan Hedberg42c6b122013-03-05 20:37:49 +0200875 BT_DBG("%s %x", req->hdev->name, scan);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
877 /* Inquiry and Page scans */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200878 hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200879 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880}
881
Johan Hedberga1d01db2015-11-11 08:11:25 +0200882static int hci_auth_req(struct hci_request *req, unsigned long opt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883{
884 __u8 auth = opt;
885
Johan Hedberg42c6b122013-03-05 20:37:49 +0200886 BT_DBG("%s %x", req->hdev->name, auth);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
888 /* Authentication */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200889 hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200890 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891}
892
Johan Hedberga1d01db2015-11-11 08:11:25 +0200893static int hci_encrypt_req(struct hci_request *req, unsigned long opt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894{
895 __u8 encrypt = opt;
896
Johan Hedberg42c6b122013-03-05 20:37:49 +0200897 BT_DBG("%s %x", req->hdev->name, encrypt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898
Marcel Holtmanne4e8e372008-07-14 20:13:47 +0200899 /* Encryption */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200900 hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200901 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902}
903
Johan Hedberga1d01db2015-11-11 08:11:25 +0200904static int hci_linkpol_req(struct hci_request *req, unsigned long opt)
Marcel Holtmanne4e8e372008-07-14 20:13:47 +0200905{
906 __le16 policy = cpu_to_le16(opt);
907
Johan Hedberg42c6b122013-03-05 20:37:49 +0200908 BT_DBG("%s %x", req->hdev->name, policy);
Marcel Holtmanne4e8e372008-07-14 20:13:47 +0200909
910 /* Default link policy */
Johan Hedberg42c6b122013-03-05 20:37:49 +0200911 hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy);
Johan Hedberga1d01db2015-11-11 08:11:25 +0200912 return 0;
Marcel Holtmanne4e8e372008-07-14 20:13:47 +0200913}
914
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +0900915/* Get HCI device by index.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 * Device is held on return. */
917struct hci_dev *hci_dev_get(int index)
918{
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +0200919 struct hci_dev *hdev = NULL, *d;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
921 BT_DBG("%d", index);
922
923 if (index < 0)
924 return NULL;
925
926 read_lock(&hci_dev_list_lock);
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +0200927 list_for_each_entry(d, &hci_dev_list, list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 if (d->id == index) {
929 hdev = hci_dev_hold(d);
930 break;
931 }
932 }
933 read_unlock(&hci_dev_list_lock);
934 return hdev;
935}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936
937/* ---- Inquiry support ---- */
Johan Hedbergff9ef572012-01-04 14:23:45 +0200938
Johan Hedberg30dc78e2012-01-04 15:44:20 +0200939bool hci_discovery_active(struct hci_dev *hdev)
940{
941 struct discovery_state *discov = &hdev->discovery;
942
Andre Guedes6fbe1952012-02-03 17:47:58 -0300943 switch (discov->state) {
Andre Guedes343f9352012-02-17 20:39:37 -0300944 case DISCOVERY_FINDING:
Andre Guedes6fbe1952012-02-03 17:47:58 -0300945 case DISCOVERY_RESOLVING:
Johan Hedberg30dc78e2012-01-04 15:44:20 +0200946 return true;
947
Andre Guedes6fbe1952012-02-03 17:47:58 -0300948 default:
949 return false;
950 }
Johan Hedberg30dc78e2012-01-04 15:44:20 +0200951}
952
Johan Hedbergff9ef572012-01-04 14:23:45 +0200953void hci_discovery_set_state(struct hci_dev *hdev, int state)
954{
Johan Hedbergbb3e0a32014-07-07 13:24:58 +0300955 int old_state = hdev->discovery.state;
956
Johan Hedbergff9ef572012-01-04 14:23:45 +0200957 BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state);
958
Johan Hedbergbb3e0a32014-07-07 13:24:58 +0300959 if (old_state == state)
Johan Hedbergff9ef572012-01-04 14:23:45 +0200960 return;
961
Johan Hedbergbb3e0a32014-07-07 13:24:58 +0300962 hdev->discovery.state = state;
963
Johan Hedbergff9ef572012-01-04 14:23:45 +0200964 switch (state) {
965 case DISCOVERY_STOPPED:
Andre Guedesc54c3862014-02-26 20:21:50 -0300966 hci_update_background_scan(hdev);
967
Johan Hedbergbb3e0a32014-07-07 13:24:58 +0300968 if (old_state != DISCOVERY_STARTING)
Andre Guedes7b99b652012-02-13 15:41:02 -0300969 mgmt_discovering(hdev, 0);
Johan Hedbergff9ef572012-01-04 14:23:45 +0200970 break;
971 case DISCOVERY_STARTING:
972 break;
Andre Guedes343f9352012-02-17 20:39:37 -0300973 case DISCOVERY_FINDING:
Johan Hedbergff9ef572012-01-04 14:23:45 +0200974 mgmt_discovering(hdev, 1);
975 break;
Johan Hedberg30dc78e2012-01-04 15:44:20 +0200976 case DISCOVERY_RESOLVING:
977 break;
Johan Hedbergff9ef572012-01-04 14:23:45 +0200978 case DISCOVERY_STOPPING:
979 break;
980 }
Johan Hedbergff9ef572012-01-04 14:23:45 +0200981}
982
Andre Guedes1f9b9a52013-04-30 15:29:27 -0300983void hci_inquiry_cache_flush(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984{
Johan Hedberg30883512012-01-04 14:16:21 +0200985 struct discovery_state *cache = &hdev->discovery;
Johan Hedbergb57c1a52012-01-03 16:03:00 +0200986 struct inquiry_entry *p, *n;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987
Johan Hedberg561aafb2012-01-04 13:31:59 +0200988 list_for_each_entry_safe(p, n, &cache->all, all) {
989 list_del(&p->all);
Johan Hedbergb57c1a52012-01-03 16:03:00 +0200990 kfree(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 }
Johan Hedberg561aafb2012-01-04 13:31:59 +0200992
993 INIT_LIST_HEAD(&cache->unknown);
994 INIT_LIST_HEAD(&cache->resolve);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995}
996
Gustavo Padovana8c5fb12012-05-17 00:36:26 -0300997struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
998 bdaddr_t *bdaddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999{
Johan Hedberg30883512012-01-04 14:16:21 +02001000 struct discovery_state *cache = &hdev->discovery;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 struct inquiry_entry *e;
1002
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03001003 BT_DBG("cache %p, %pMR", cache, bdaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004
Johan Hedberg561aafb2012-01-04 13:31:59 +02001005 list_for_each_entry(e, &cache->all, all) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 if (!bacmp(&e->data.bdaddr, bdaddr))
Johan Hedbergb57c1a52012-01-03 16:03:00 +02001007 return e;
1008 }
1009
1010 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011}
1012
Johan Hedberg561aafb2012-01-04 13:31:59 +02001013struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
Gustavo F. Padovan04124682012-03-08 01:25:00 -03001014 bdaddr_t *bdaddr)
Johan Hedberg561aafb2012-01-04 13:31:59 +02001015{
Johan Hedberg30883512012-01-04 14:16:21 +02001016 struct discovery_state *cache = &hdev->discovery;
Johan Hedberg561aafb2012-01-04 13:31:59 +02001017 struct inquiry_entry *e;
1018
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03001019 BT_DBG("cache %p, %pMR", cache, bdaddr);
Johan Hedberg561aafb2012-01-04 13:31:59 +02001020
1021 list_for_each_entry(e, &cache->unknown, list) {
1022 if (!bacmp(&e->data.bdaddr, bdaddr))
1023 return e;
1024 }
1025
1026 return NULL;
1027}
1028
Johan Hedberg30dc78e2012-01-04 15:44:20 +02001029struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
Gustavo F. Padovan04124682012-03-08 01:25:00 -03001030 bdaddr_t *bdaddr,
1031 int state)
Johan Hedberg30dc78e2012-01-04 15:44:20 +02001032{
1033 struct discovery_state *cache = &hdev->discovery;
1034 struct inquiry_entry *e;
1035
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03001036 BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state);
Johan Hedberg30dc78e2012-01-04 15:44:20 +02001037
1038 list_for_each_entry(e, &cache->resolve, list) {
1039 if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state)
1040 return e;
1041 if (!bacmp(&e->data.bdaddr, bdaddr))
1042 return e;
1043 }
1044
1045 return NULL;
1046}
1047
Johan Hedberga3d4e202012-01-09 00:53:02 +02001048void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
Gustavo F. Padovan04124682012-03-08 01:25:00 -03001049 struct inquiry_entry *ie)
Johan Hedberga3d4e202012-01-09 00:53:02 +02001050{
1051 struct discovery_state *cache = &hdev->discovery;
1052 struct list_head *pos = &cache->resolve;
1053 struct inquiry_entry *p;
1054
1055 list_del(&ie->list);
1056
1057 list_for_each_entry(p, &cache->resolve, list) {
1058 if (p->name_state != NAME_PENDING &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03001059 abs(p->data.rssi) >= abs(ie->data.rssi))
Johan Hedberga3d4e202012-01-09 00:53:02 +02001060 break;
1061 pos = &p->list;
1062 }
1063
1064 list_add(&ie->list, pos);
1065}
1066
Marcel Holtmannaf589252014-07-01 14:11:20 +02001067u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
1068 bool name_known)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069{
Johan Hedberg30883512012-01-04 14:16:21 +02001070 struct discovery_state *cache = &hdev->discovery;
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001071 struct inquiry_entry *ie;
Marcel Holtmannaf589252014-07-01 14:11:20 +02001072 u32 flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03001074 BT_DBG("cache %p, %pMR", cache, &data->bdaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
Johan Hedberg6928a922014-10-26 20:46:09 +01001076 hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR);
Szymon Janc2b2fec42012-11-20 11:38:54 +01001077
Marcel Holtmannaf589252014-07-01 14:11:20 +02001078 if (!data->ssp_mode)
1079 flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
Johan Hedberg388fc8f2012-02-23 00:38:59 +02001080
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001081 ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr);
Johan Hedberga3d4e202012-01-09 00:53:02 +02001082 if (ie) {
Marcel Holtmannaf589252014-07-01 14:11:20 +02001083 if (!ie->data.ssp_mode)
1084 flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
Johan Hedberg388fc8f2012-02-23 00:38:59 +02001085
Johan Hedberga3d4e202012-01-09 00:53:02 +02001086 if (ie->name_state == NAME_NEEDED &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03001087 data->rssi != ie->data.rssi) {
Johan Hedberga3d4e202012-01-09 00:53:02 +02001088 ie->data.rssi = data->rssi;
1089 hci_inquiry_cache_update_resolve(hdev, ie);
1090 }
1091
Johan Hedberg561aafb2012-01-04 13:31:59 +02001092 goto update;
Johan Hedberga3d4e202012-01-09 00:53:02 +02001093 }
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001094
Johan Hedberg561aafb2012-01-04 13:31:59 +02001095 /* Entry not in the cache. Add new one. */
Johan Hedberg27f70f32014-07-21 10:50:06 +03001096 ie = kzalloc(sizeof(*ie), GFP_KERNEL);
Marcel Holtmannaf589252014-07-01 14:11:20 +02001097 if (!ie) {
1098 flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
1099 goto done;
1100 }
Johan Hedberg561aafb2012-01-04 13:31:59 +02001101
1102 list_add(&ie->all, &cache->all);
1103
1104 if (name_known) {
1105 ie->name_state = NAME_KNOWN;
1106 } else {
1107 ie->name_state = NAME_NOT_KNOWN;
1108 list_add(&ie->list, &cache->unknown);
1109 }
1110
1111update:
1112 if (name_known && ie->name_state != NAME_KNOWN &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03001113 ie->name_state != NAME_PENDING) {
Johan Hedberg561aafb2012-01-04 13:31:59 +02001114 ie->name_state = NAME_KNOWN;
1115 list_del(&ie->list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001116 }
1117
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001118 memcpy(&ie->data, data, sizeof(*data));
1119 ie->timestamp = jiffies;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 cache->timestamp = jiffies;
Johan Hedberg31754052012-01-04 13:39:52 +02001121
1122 if (ie->name_state == NAME_NOT_KNOWN)
Marcel Holtmannaf589252014-07-01 14:11:20 +02001123 flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
Johan Hedberg31754052012-01-04 13:39:52 +02001124
Marcel Holtmannaf589252014-07-01 14:11:20 +02001125done:
1126 return flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127}
1128
1129static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf)
1130{
Johan Hedberg30883512012-01-04 14:16:21 +02001131 struct discovery_state *cache = &hdev->discovery;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132 struct inquiry_info *info = (struct inquiry_info *) buf;
1133 struct inquiry_entry *e;
1134 int copied = 0;
1135
Johan Hedberg561aafb2012-01-04 13:31:59 +02001136 list_for_each_entry(e, &cache->all, all) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137 struct inquiry_data *data = &e->data;
Johan Hedbergb57c1a52012-01-03 16:03:00 +02001138
1139 if (copied >= num)
1140 break;
1141
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142 bacpy(&info->bdaddr, &data->bdaddr);
1143 info->pscan_rep_mode = data->pscan_rep_mode;
1144 info->pscan_period_mode = data->pscan_period_mode;
1145 info->pscan_mode = data->pscan_mode;
1146 memcpy(info->dev_class, data->dev_class, 3);
1147 info->clock_offset = data->clock_offset;
Johan Hedbergb57c1a52012-01-03 16:03:00 +02001148
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 info++;
Johan Hedbergb57c1a52012-01-03 16:03:00 +02001150 copied++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 }
1152
1153 BT_DBG("cache %p, copied %d", cache, copied);
1154 return copied;
1155}
1156
Johan Hedberga1d01db2015-11-11 08:11:25 +02001157static int hci_inq_req(struct hci_request *req, unsigned long opt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158{
1159 struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt;
Johan Hedberg42c6b122013-03-05 20:37:49 +02001160 struct hci_dev *hdev = req->hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001161 struct hci_cp_inquiry cp;
1162
1163 BT_DBG("%s", hdev->name);
1164
1165 if (test_bit(HCI_INQUIRY, &hdev->flags))
Johan Hedberga1d01db2015-11-11 08:11:25 +02001166 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167
1168 /* Start Inquiry */
1169 memcpy(&cp.lap, &ir->lap, 3);
1170 cp.length = ir->length;
1171 cp.num_rsp = ir->num_rsp;
Johan Hedberg42c6b122013-03-05 20:37:49 +02001172 hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
Johan Hedberga1d01db2015-11-11 08:11:25 +02001173
1174 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175}
1176
1177int hci_inquiry(void __user *arg)
1178{
1179 __u8 __user *ptr = arg;
1180 struct hci_inquiry_req ir;
1181 struct hci_dev *hdev;
1182 int err = 0, do_inquiry = 0, max_rsp;
1183 long timeo;
1184 __u8 *buf;
1185
1186 if (copy_from_user(&ir, ptr, sizeof(ir)))
1187 return -EFAULT;
1188
Andrei Emeltchenko5a08ecc2011-01-11 17:20:20 +02001189 hdev = hci_dev_get(ir.dev_id);
1190 if (!hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 return -ENODEV;
1192
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001193 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001194 err = -EBUSY;
1195 goto done;
1196 }
1197
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001198 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001199 err = -EOPNOTSUPP;
1200 goto done;
1201 }
1202
Marcel Holtmannca8bee52016-07-05 14:30:14 +02001203 if (hdev->dev_type != HCI_PRIMARY) {
Marcel Holtmann5b69bef52013-10-10 10:02:08 -07001204 err = -EOPNOTSUPP;
1205 goto done;
1206 }
1207
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001208 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
Johan Hedberg56f87902013-10-02 13:43:13 +03001209 err = -EOPNOTSUPP;
1210 goto done;
1211 }
1212
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001213 hci_dev_lock(hdev);
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001214 if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03001215 inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) {
Andre Guedes1f9b9a52013-04-30 15:29:27 -03001216 hci_inquiry_cache_flush(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 do_inquiry = 1;
1218 }
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001219 hci_dev_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220
Marcel Holtmann04837f62006-07-03 10:02:33 +02001221 timeo = ir.length * msecs_to_jiffies(2000);
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001222
1223 if (do_inquiry) {
Johan Hedberg01178cd2013-03-05 20:37:41 +02001224 err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001225 timeo, NULL);
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001226 if (err < 0)
1227 goto done;
Andre Guedes3e13fa12013-03-27 20:04:56 -03001228
1229 /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
1230 * cleared). If it is interrupted by a signal, return -EINTR.
1231 */
NeilBrown74316202014-07-07 15:16:04 +10001232 if (wait_on_bit(&hdev->flags, HCI_INQUIRY,
Andre Guedes3e13fa12013-03-27 20:04:56 -03001233 TASK_INTERRUPTIBLE))
1234 return -EINTR;
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001235 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236
Gustavo Padovan8fc9ced2012-05-23 04:04:21 -03001237 /* for unlimited number of responses we will use buffer with
1238 * 255 entries
1239 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp;
1241
1242 /* cache_dump can't sleep. Therefore we allocate temp buffer and then
1243 * copy it to the user space.
1244 */
Szymon Janc01df8c32011-02-17 16:46:47 +01001245 buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL);
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001246 if (!buf) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 err = -ENOMEM;
1248 goto done;
1249 }
1250
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001251 hci_dev_lock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252 ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf);
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001253 hci_dev_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254
1255 BT_DBG("num_rsp %d", ir.num_rsp);
1256
1257 if (!copy_to_user(ptr, &ir, sizeof(ir))) {
1258 ptr += sizeof(ir);
1259 if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) *
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03001260 ir.num_rsp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 err = -EFAULT;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001262 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 err = -EFAULT;
1264
1265 kfree(buf);
1266
1267done:
1268 hci_dev_put(hdev);
1269 return err;
1270}
1271
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03001272static int hci_dev_do_open(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274 int ret = 0;
1275
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 BT_DBG("%s %p", hdev->name, hdev);
1277
Johan Hedbergb5044302015-11-10 09:44:55 +02001278 hci_req_sync_lock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001280 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
Johan Hovold94324962012-03-15 14:48:41 +01001281 ret = -ENODEV;
1282 goto done;
1283 }
1284
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001285 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
1286 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07001287 /* Check for rfkill but allow the HCI setup stage to
1288 * proceed (which in itself doesn't cause any RF activity).
1289 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001290 if (hci_dev_test_flag(hdev, HCI_RFKILLED)) {
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07001291 ret = -ERFKILL;
1292 goto done;
1293 }
1294
1295 /* Check for valid public address or a configured static
1296 * random adddress, but let the HCI setup proceed to
1297 * be able to determine if there is a public address
1298 * or not.
1299 *
Marcel Holtmannc6beca02014-02-17 09:21:19 -08001300 * In case of user channel usage, it is not important
1301 * if a public address or static random address is
1302 * available.
1303 *
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07001304 * This check is only valid for BR/EDR controllers
1305 * since AMP controllers do not have an address.
1306 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001307 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
Marcel Holtmannca8bee52016-07-05 14:30:14 +02001308 hdev->dev_type == HCI_PRIMARY &&
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07001309 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
1310 !bacmp(&hdev->static_addr, BDADDR_ANY)) {
1311 ret = -EADDRNOTAVAIL;
1312 goto done;
1313 }
Marcel Holtmann611b30f2009-06-08 14:41:38 +02001314 }
1315
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 if (test_bit(HCI_UP, &hdev->flags)) {
1317 ret = -EALREADY;
1318 goto done;
1319 }
1320
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321 if (hdev->open(hdev)) {
1322 ret = -EIO;
1323 goto done;
1324 }
1325
Marcel Holtmanne9ca8bf2015-10-04 23:34:02 +02001326 set_bit(HCI_RUNNING, &hdev->flags);
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01001327 hci_sock_dev_event(hdev, HCI_DEV_OPEN);
Marcel Holtmann4a3f95b2015-10-04 23:34:00 +02001328
Marcel Holtmannf41c70c2012-11-12 14:02:14 +09001329 atomic_set(&hdev->cmd_cnt, 1);
1330 set_bit(HCI_INIT, &hdev->flags);
1331
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001332 if (hci_dev_test_flag(hdev, HCI_SETUP)) {
Marcel Holtmanne131d742015-10-20 02:30:47 +02001333 hci_sock_dev_event(hdev, HCI_DEV_SETUP);
1334
Marcel Holtmannaf202f82014-07-04 17:23:34 +02001335 if (hdev->setup)
1336 ret = hdev->setup(hdev);
Marcel Holtmannf41c70c2012-11-12 14:02:14 +09001337
Marcel Holtmannaf202f82014-07-04 17:23:34 +02001338 /* The transport driver can set these quirks before
1339 * creating the HCI device or in its setup callback.
1340 *
1341 * In case any of them is set, the controller has to
1342 * start up as unconfigured.
1343 */
Marcel Holtmanneb1904f2014-07-04 17:23:33 +02001344 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
1345 test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks))
Marcel Holtmanna1536da2015-03-13 02:11:01 -07001346 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +02001347
1348 /* For an unconfigured controller it is required to
1349 * read at least the version information provided by
1350 * the Read Local Version Information command.
1351 *
1352 * If the set_bdaddr driver callback is provided, then
1353 * also the original Bluetooth public device address
1354 * will be read using the Read BD Address command.
1355 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001356 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
Marcel Holtmann0ebca7d2014-07-05 10:48:02 +02001357 ret = __hci_unconf_init(hdev);
Marcel Holtmann89bc22d2014-07-04 16:54:37 +02001358 }
1359
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001360 if (hci_dev_test_flag(hdev, HCI_CONFIG)) {
Marcel Holtmann9713c172014-07-06 12:11:15 +02001361 /* If public address change is configured, ensure that
1362 * the address gets programmed. If the driver does not
1363 * support changing the public address, fail the power
1364 * on procedure.
1365 */
1366 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
1367 hdev->set_bdaddr)
Marcel Holtmann24c457e2014-07-02 00:53:47 +02001368 ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
1369 else
1370 ret = -EADDRNOTAVAIL;
1371 }
Marcel Holtmannf41c70c2012-11-12 14:02:14 +09001372
1373 if (!ret) {
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001374 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
Marcel Holtmann98a63aa2015-10-20 23:25:42 +02001375 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmannf41c70c2012-11-12 14:02:14 +09001376 ret = __hci_init(hdev);
Marcel Holtmann98a63aa2015-10-20 23:25:42 +02001377 if (!ret && hdev->post_init)
1378 ret = hdev->post_init(hdev);
1379 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 }
1381
Marcel Holtmann7e995b92015-10-17 16:00:26 +02001382 /* If the HCI Reset command is clearing all diagnostic settings,
1383 * then they need to be reprogrammed after the init procedure
1384 * completed.
1385 */
1386 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1387 hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag)
1388 ret = hdev->set_diag(hdev, true);
1389
Marcel Holtmannf41c70c2012-11-12 14:02:14 +09001390 clear_bit(HCI_INIT, &hdev->flags);
1391
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392 if (!ret) {
1393 hci_dev_hold(hdev);
Marcel Holtmanna1536da2015-03-13 02:11:01 -07001394 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395 set_bit(HCI_UP, &hdev->flags);
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01001396 hci_sock_dev_event(hdev, HCI_DEV_UP);
Heiner Kallweit6d5d2ee2016-01-08 19:28:58 +01001397 hci_leds_update_powered(hdev, true);
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001398 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
1399 !hci_dev_test_flag(hdev, HCI_CONFIG) &&
1400 !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
1401 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
Johan Hedberg2ff13892015-11-25 16:15:44 +02001402 hci_dev_test_flag(hdev, HCI_MGMT) &&
Marcel Holtmannca8bee52016-07-05 14:30:14 +02001403 hdev->dev_type == HCI_PRIMARY) {
Johan Hedberg2ff13892015-11-25 16:15:44 +02001404 ret = __hci_req_hci_power_on(hdev);
1405 mgmt_power_on(hdev, ret);
Johan Hedberg56e5cb82011-11-08 20:40:16 +02001406 }
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001407 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408 /* Init failed, cleanup */
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02001409 flush_work(&hdev->tx_work);
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02001410 flush_work(&hdev->cmd_work);
Marcel Holtmannb78752c2010-08-08 23:06:53 -04001411 flush_work(&hdev->rx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412
1413 skb_queue_purge(&hdev->cmd_q);
1414 skb_queue_purge(&hdev->rx_q);
1415
1416 if (hdev->flush)
1417 hdev->flush(hdev);
1418
1419 if (hdev->sent_cmd) {
1420 kfree_skb(hdev->sent_cmd);
1421 hdev->sent_cmd = NULL;
1422 }
1423
Marcel Holtmanne9ca8bf2015-10-04 23:34:02 +02001424 clear_bit(HCI_RUNNING, &hdev->flags);
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01001425 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
Marcel Holtmann4a3f95b2015-10-04 23:34:00 +02001426
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427 hdev->close(hdev);
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001428 hdev->flags &= BIT(HCI_RAW);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 }
1430
1431done:
Johan Hedbergb5044302015-11-10 09:44:55 +02001432 hci_req_sync_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 return ret;
1434}
1435
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03001436/* ---- HCI ioctl helpers ---- */
1437
1438int hci_dev_open(__u16 dev)
1439{
1440 struct hci_dev *hdev;
1441 int err;
1442
1443 hdev = hci_dev_get(dev);
1444 if (!hdev)
1445 return -ENODEV;
1446
Marcel Holtmann4a964402014-07-02 19:10:33 +02001447 /* Devices that are marked as unconfigured can only be powered
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001448 * up as user channel. Trying to bring them up as normal devices
1449 * will result into a failure. Only user channel operation is
1450 * possible.
1451 *
1452 * When this function is called for a user channel, the flag
1453 * HCI_USER_CHANNEL will be set first before attempting to
1454 * open the device.
1455 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001456 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
1457 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001458 err = -EOPNOTSUPP;
1459 goto done;
1460 }
1461
Johan Hedberge1d08f42013-10-01 22:44:50 +03001462 /* We need to ensure that no other power on/off work is pending
1463 * before proceeding to call hci_dev_do_open. This is
1464 * particularly important if the setup procedure has not yet
1465 * completed.
1466 */
Marcel Holtmanna69d8922015-03-13 02:11:05 -07001467 if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF))
Johan Hedberge1d08f42013-10-01 22:44:50 +03001468 cancel_delayed_work(&hdev->power_off);
1469
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07001470 /* After this call it is guaranteed that the setup procedure
1471 * has finished. This means that error conditions like RFKILL
1472 * or no valid public or static random address apply.
1473 */
Johan Hedberge1d08f42013-10-01 22:44:50 +03001474 flush_workqueue(hdev->req_workqueue);
1475
Marcel Holtmann12aa4f02014-07-10 15:25:22 +02001476 /* For controllers not using the management interface and that
Johan Hedbergb6ae8452014-07-30 09:22:22 +03001477 * are brought up using legacy ioctl, set the HCI_BONDABLE bit
Marcel Holtmann12aa4f02014-07-10 15:25:22 +02001478 * so that pairing works for them. Once the management interface
1479 * is in use this bit will be cleared again and userspace has
1480 * to explicitly enable it.
1481 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001482 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
1483 !hci_dev_test_flag(hdev, HCI_MGMT))
Marcel Holtmanna1536da2015-03-13 02:11:01 -07001484 hci_dev_set_flag(hdev, HCI_BONDABLE);
Marcel Holtmann12aa4f02014-07-10 15:25:22 +02001485
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03001486 err = hci_dev_do_open(hdev);
1487
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001488done:
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03001489 hci_dev_put(hdev);
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03001490 return err;
1491}
1492
Johan Hedbergd7347f32014-07-04 12:37:23 +03001493/* This function requires the caller holds hdev->lock */
1494static void hci_pend_le_actions_clear(struct hci_dev *hdev)
1495{
1496 struct hci_conn_params *p;
1497
Johan Hedbergf161dd42014-08-15 21:06:54 +03001498 list_for_each_entry(p, &hdev->le_conn_params, list) {
1499 if (p->conn) {
1500 hci_conn_drop(p->conn);
Johan Hedbergf8aaf9b2014-08-17 23:28:57 +03001501 hci_conn_put(p->conn);
Johan Hedbergf161dd42014-08-15 21:06:54 +03001502 p->conn = NULL;
1503 }
Johan Hedbergd7347f32014-07-04 12:37:23 +03001504 list_del_init(&p->action);
Johan Hedbergf161dd42014-08-15 21:06:54 +03001505 }
Johan Hedbergd7347f32014-07-04 12:37:23 +03001506
1507 BT_DBG("All LE pending actions cleared");
1508}
1509
Simon Fels6b3cc1d2015-09-02 12:10:12 +02001510int hci_dev_do_close(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511{
Marcel Holtmannacc649c2015-10-08 01:53:55 +02001512 bool auto_off;
1513
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 BT_DBG("%s %p", hdev->name, hdev);
1515
Gabriele Mazzottad24d8142015-04-26 20:51:50 +02001516 if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
Loic Poulain867146a2015-06-09 11:46:30 +02001517 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
Gabriele Mazzottad24d8142015-04-26 20:51:50 +02001518 test_bit(HCI_UP, &hdev->flags)) {
Tedd Ho-Jeong Ana44fecb2015-02-13 09:20:50 -08001519 /* Execute vendor specific shutdown routine */
1520 if (hdev->shutdown)
1521 hdev->shutdown(hdev);
1522 }
1523
Vinicius Costa Gomes78c04c02012-09-14 16:34:46 -03001524 cancel_delayed_work(&hdev->power_off);
1525
Johan Hedberg7df0f732015-11-12 15:15:00 +02001526 hci_request_cancel_all(hdev);
Johan Hedbergb5044302015-11-10 09:44:55 +02001527 hci_req_sync_lock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528
1529 if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02001530 cancel_delayed_work_sync(&hdev->cmd_timer);
Johan Hedbergb5044302015-11-10 09:44:55 +02001531 hci_req_sync_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 return 0;
1533 }
1534
Heiner Kallweit6d5d2ee2016-01-08 19:28:58 +01001535 hci_leds_update_powered(hdev, false);
1536
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02001537 /* Flush RX and TX works */
1538 flush_work(&hdev->tx_work);
Marcel Holtmannb78752c2010-08-08 23:06:53 -04001539 flush_work(&hdev->rx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540
Johan Hedberg16ab91a2011-11-07 22:16:02 +02001541 if (hdev->discov_timeout > 0) {
Johan Hedberg16ab91a2011-11-07 22:16:02 +02001542 hdev->discov_timeout = 0;
Marcel Holtmanna358dc12015-03-13 02:11:02 -07001543 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
1544 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
Johan Hedberg16ab91a2011-11-07 22:16:02 +02001545 }
1546
Marcel Holtmanna69d8922015-03-13 02:11:05 -07001547 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
Johan Hedberg7d785252011-12-15 00:47:39 +02001548 cancel_delayed_work(&hdev->service_cache);
1549
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001550 if (hci_dev_test_flag(hdev, HCI_MGMT))
Johan Hedberg4518bb02014-02-24 20:35:07 +02001551 cancel_delayed_work_sync(&hdev->rpa_expired);
Andre Guedes7ba8b4b2012-02-03 17:47:59 -03001552
Johan Hedberg76727c02014-11-18 09:00:14 +02001553 /* Avoid potential lockdep warnings from the *_flush() calls by
1554 * ensuring the workqueue is empty up front.
1555 */
1556 drain_workqueue(hdev->workqueue);
1557
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001558 hci_dev_lock(hdev);
Johan Hedberg1aeb9c62014-12-11 21:45:46 +02001559
Johan Hedberg8f502f82015-01-28 19:56:02 +02001560 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1561
Marcel Holtmannacc649c2015-10-08 01:53:55 +02001562 auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
1563
Marcel Holtmannca8bee52016-07-05 14:30:14 +02001564 if (!auto_off && hdev->dev_type == HCI_PRIMARY &&
Marcel Holtmannbaab7932016-09-04 05:13:46 +02001565 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
Johan Hedberg2ff13892015-11-25 16:15:44 +02001566 hci_dev_test_flag(hdev, HCI_MGMT))
1567 __mgmt_power_off(hdev);
Johan Hedberg1aeb9c62014-12-11 21:45:46 +02001568
Andre Guedes1f9b9a52013-04-30 15:29:27 -03001569 hci_inquiry_cache_flush(hdev);
Johan Hedbergd7347f32014-07-04 12:37:23 +03001570 hci_pend_le_actions_clear(hdev);
Johan Hedbergf161dd42014-08-15 21:06:54 +03001571 hci_conn_hash_flush(hdev);
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001572 hci_dev_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573
Marcel Holtmann64dae962015-01-28 14:10:28 -08001574 smp_unregister(hdev);
1575
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01001576 hci_sock_dev_event(hdev, HCI_DEV_DOWN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577
1578 if (hdev->flush)
1579 hdev->flush(hdev);
1580
1581 /* Reset device */
1582 skb_queue_purge(&hdev->cmd_q);
1583 atomic_set(&hdev->cmd_cnt, 1);
Marcel Holtmannacc649c2015-10-08 01:53:55 +02001584 if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
1585 !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 set_bit(HCI_INIT, &hdev->flags);
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001587 __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588 clear_bit(HCI_INIT, &hdev->flags);
1589 }
1590
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02001591 /* flush cmd work */
1592 flush_work(&hdev->cmd_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593
1594 /* Drop queues */
1595 skb_queue_purge(&hdev->rx_q);
1596 skb_queue_purge(&hdev->cmd_q);
1597 skb_queue_purge(&hdev->raw_q);
1598
1599 /* Drop last sent command */
1600 if (hdev->sent_cmd) {
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02001601 cancel_delayed_work_sync(&hdev->cmd_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602 kfree_skb(hdev->sent_cmd);
1603 hdev->sent_cmd = NULL;
1604 }
1605
Marcel Holtmanne9ca8bf2015-10-04 23:34:02 +02001606 clear_bit(HCI_RUNNING, &hdev->flags);
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01001607 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
Marcel Holtmann4a3f95b2015-10-04 23:34:00 +02001608
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 /* After this point our queues are empty
1610 * and no tasks are scheduled. */
1611 hdev->close(hdev);
1612
Johan Hedberg35b973c2013-03-15 17:06:59 -05001613 /* Clear flags */
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001614 hdev->flags &= BIT(HCI_RAW);
Marcel Holtmanneacb44d2015-03-13 09:04:17 -07001615 hci_dev_clear_volatile_flags(hdev);
Johan Hedberg35b973c2013-03-15 17:06:59 -05001616
Andrei Emeltchenkoced5c332012-11-28 17:59:42 +02001617 /* Controller radio is available but is currently powered down */
Marcel Holtmann536619e2013-10-05 11:47:45 -07001618 hdev->amp_status = AMP_STATUS_POWERED_DOWN;
Andrei Emeltchenkoced5c332012-11-28 17:59:42 +02001619
Johan Hedberge59fda82012-02-22 18:11:53 +02001620 memset(hdev->eir, 0, sizeof(hdev->eir));
Johan Hedberg09b3c3f2012-02-22 22:01:41 +02001621 memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
Marcel Holtmann7a4cd512014-02-19 19:52:13 -08001622 bacpy(&hdev->random_addr, BDADDR_ANY);
Johan Hedberge59fda82012-02-22 18:11:53 +02001623
Johan Hedbergb5044302015-11-10 09:44:55 +02001624 hci_req_sync_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625
1626 hci_dev_put(hdev);
1627 return 0;
1628}
1629
1630int hci_dev_close(__u16 dev)
1631{
1632 struct hci_dev *hdev;
1633 int err;
1634
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001635 hdev = hci_dev_get(dev);
1636 if (!hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001637 return -ENODEV;
Marcel Holtmann8ee56542012-02-21 12:33:48 +01001638
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001639 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001640 err = -EBUSY;
1641 goto done;
1642 }
1643
Marcel Holtmanna69d8922015-03-13 02:11:05 -07001644 if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF))
Marcel Holtmann8ee56542012-02-21 12:33:48 +01001645 cancel_delayed_work(&hdev->power_off);
1646
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647 err = hci_dev_do_close(hdev);
Marcel Holtmann8ee56542012-02-21 12:33:48 +01001648
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001649done:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650 hci_dev_put(hdev);
1651 return err;
1652}
1653
Marcel Holtmann5c912492015-01-28 11:53:05 -08001654static int hci_dev_do_reset(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655{
Marcel Holtmann5c912492015-01-28 11:53:05 -08001656 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001657
Marcel Holtmann5c912492015-01-28 11:53:05 -08001658 BT_DBG("%s %p", hdev->name, hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659
Johan Hedbergb5044302015-11-10 09:44:55 +02001660 hci_req_sync_lock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661
Linus Torvalds1da177e2005-04-16 15:20:36 -07001662 /* Drop queues */
1663 skb_queue_purge(&hdev->rx_q);
1664 skb_queue_purge(&hdev->cmd_q);
1665
Johan Hedberg76727c02014-11-18 09:00:14 +02001666 /* Avoid potential lockdep warnings from the *_flush() calls by
1667 * ensuring the workqueue is empty up front.
1668 */
1669 drain_workqueue(hdev->workqueue);
1670
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001671 hci_dev_lock(hdev);
Andre Guedes1f9b9a52013-04-30 15:29:27 -03001672 hci_inquiry_cache_flush(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673 hci_conn_hash_flush(hdev);
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03001674 hci_dev_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675
1676 if (hdev->flush)
1677 hdev->flush(hdev);
1678
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001679 atomic_set(&hdev->cmd_cnt, 1);
Ville Tervo6ed58ec2011-02-10 22:38:48 -03001680 hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001681
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001682 ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683
Johan Hedbergb5044302015-11-10 09:44:55 +02001684 hci_req_sync_unlock(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685 return ret;
1686}
1687
Marcel Holtmann5c912492015-01-28 11:53:05 -08001688int hci_dev_reset(__u16 dev)
1689{
1690 struct hci_dev *hdev;
1691 int err;
1692
1693 hdev = hci_dev_get(dev);
1694 if (!hdev)
1695 return -ENODEV;
1696
1697 if (!test_bit(HCI_UP, &hdev->flags)) {
1698 err = -ENETDOWN;
1699 goto done;
1700 }
1701
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001702 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann5c912492015-01-28 11:53:05 -08001703 err = -EBUSY;
1704 goto done;
1705 }
1706
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001707 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Marcel Holtmann5c912492015-01-28 11:53:05 -08001708 err = -EOPNOTSUPP;
1709 goto done;
1710 }
1711
1712 err = hci_dev_do_reset(hdev);
1713
1714done:
1715 hci_dev_put(hdev);
1716 return err;
1717}
1718
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719int hci_dev_reset_stat(__u16 dev)
1720{
1721 struct hci_dev *hdev;
1722 int ret = 0;
1723
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001724 hdev = hci_dev_get(dev);
1725 if (!hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 return -ENODEV;
1727
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001728 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001729 ret = -EBUSY;
1730 goto done;
1731 }
1732
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001733 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001734 ret = -EOPNOTSUPP;
1735 goto done;
1736 }
1737
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
1739
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001740done:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741 hci_dev_put(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742 return ret;
1743}
1744
Johan Hedberg123abc02014-07-10 12:09:07 +03001745static void hci_update_scan_state(struct hci_dev *hdev, u8 scan)
1746{
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001747 bool conn_changed, discov_changed;
Johan Hedberg123abc02014-07-10 12:09:07 +03001748
1749 BT_DBG("%s scan 0x%02x", hdev->name, scan);
1750
1751 if ((scan & SCAN_PAGE))
Marcel Holtmann238be782015-03-13 02:11:06 -07001752 conn_changed = !hci_dev_test_and_set_flag(hdev,
1753 HCI_CONNECTABLE);
Johan Hedberg123abc02014-07-10 12:09:07 +03001754 else
Marcel Holtmanna69d8922015-03-13 02:11:05 -07001755 conn_changed = hci_dev_test_and_clear_flag(hdev,
1756 HCI_CONNECTABLE);
Johan Hedberg123abc02014-07-10 12:09:07 +03001757
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001758 if ((scan & SCAN_INQUIRY)) {
Marcel Holtmann238be782015-03-13 02:11:06 -07001759 discov_changed = !hci_dev_test_and_set_flag(hdev,
1760 HCI_DISCOVERABLE);
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001761 } else {
Marcel Holtmanna358dc12015-03-13 02:11:02 -07001762 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
Marcel Holtmanna69d8922015-03-13 02:11:05 -07001763 discov_changed = hci_dev_test_and_clear_flag(hdev,
1764 HCI_DISCOVERABLE);
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001765 }
1766
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001767 if (!hci_dev_test_flag(hdev, HCI_MGMT))
Johan Hedberg123abc02014-07-10 12:09:07 +03001768 return;
1769
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001770 if (conn_changed || discov_changed) {
1771 /* In case this was disabled through mgmt */
Marcel Holtmanna1536da2015-03-13 02:11:01 -07001772 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001773
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001774 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
Johan Hedbergcab054a2015-11-30 11:21:45 +02001775 hci_req_update_adv_data(hdev, hdev->cur_adv_instance);
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001776
Johan Hedberg123abc02014-07-10 12:09:07 +03001777 mgmt_new_settings(hdev);
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001778 }
Johan Hedberg123abc02014-07-10 12:09:07 +03001779}
1780
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781int hci_dev_cmd(unsigned int cmd, void __user *arg)
1782{
1783 struct hci_dev *hdev;
1784 struct hci_dev_req dr;
1785 int err = 0;
1786
1787 if (copy_from_user(&dr, arg, sizeof(dr)))
1788 return -EFAULT;
1789
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001790 hdev = hci_dev_get(dr.dev_id);
1791 if (!hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001792 return -ENODEV;
1793
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001794 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001795 err = -EBUSY;
1796 goto done;
1797 }
1798
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001799 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Marcel Holtmannfee746b2014-06-29 12:13:05 +02001800 err = -EOPNOTSUPP;
1801 goto done;
1802 }
1803
Marcel Holtmannca8bee52016-07-05 14:30:14 +02001804 if (hdev->dev_type != HCI_PRIMARY) {
Marcel Holtmann5b69bef52013-10-10 10:02:08 -07001805 err = -EOPNOTSUPP;
1806 goto done;
1807 }
1808
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001809 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
Johan Hedberg56f87902013-10-02 13:43:13 +03001810 err = -EOPNOTSUPP;
1811 goto done;
1812 }
1813
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814 switch (cmd) {
1815 case HCISETAUTH:
Johan Hedberg01178cd2013-03-05 20:37:41 +02001816 err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001817 HCI_INIT_TIMEOUT, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 break;
1819
1820 case HCISETENCRYPT:
1821 if (!lmp_encrypt_capable(hdev)) {
1822 err = -EOPNOTSUPP;
1823 break;
1824 }
1825
1826 if (!test_bit(HCI_AUTH, &hdev->flags)) {
1827 /* Auth must be enabled first */
Johan Hedberg01178cd2013-03-05 20:37:41 +02001828 err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001829 HCI_INIT_TIMEOUT, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 if (err)
1831 break;
1832 }
1833
Johan Hedberg01178cd2013-03-05 20:37:41 +02001834 err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001835 HCI_INIT_TIMEOUT, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836 break;
1837
1838 case HCISETSCAN:
Johan Hedberg01178cd2013-03-05 20:37:41 +02001839 err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001840 HCI_INIT_TIMEOUT, NULL);
Johan Hedberg91a668b2014-07-09 13:28:26 +03001841
Johan Hedbergbc6d2d02014-07-10 12:09:08 +03001842 /* Ensure that the connectable and discoverable states
1843 * get correctly modified as this was a non-mgmt change.
Johan Hedberg91a668b2014-07-09 13:28:26 +03001844 */
Johan Hedberg123abc02014-07-10 12:09:07 +03001845 if (!err)
1846 hci_update_scan_state(hdev, dr.dev_opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 break;
1848
Marcel Holtmanne4e8e372008-07-14 20:13:47 +02001849 case HCISETLINKPOL:
Johan Hedberg01178cd2013-03-05 20:37:41 +02001850 err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt,
Johan Hedberg4ebeee22015-11-11 08:11:19 +02001851 HCI_INIT_TIMEOUT, NULL);
Marcel Holtmanne4e8e372008-07-14 20:13:47 +02001852 break;
1853
1854 case HCISETLINKMODE:
1855 hdev->link_mode = ((__u16) dr.dev_opt) &
1856 (HCI_LM_MASTER | HCI_LM_ACCEPT);
1857 break;
1858
Linus Torvalds1da177e2005-04-16 15:20:36 -07001859 case HCISETPTYPE:
1860 hdev->pkt_type = (__u16) dr.dev_opt;
1861 break;
1862
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863 case HCISETACLMTU:
Marcel Holtmanne4e8e372008-07-14 20:13:47 +02001864 hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1);
1865 hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866 break;
1867
1868 case HCISETSCOMTU:
Marcel Holtmanne4e8e372008-07-14 20:13:47 +02001869 hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1);
1870 hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871 break;
1872
1873 default:
1874 err = -EINVAL;
1875 break;
1876 }
Marcel Holtmanne4e8e372008-07-14 20:13:47 +02001877
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001878done:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 hci_dev_put(hdev);
1880 return err;
1881}
1882
1883int hci_get_dev_list(void __user *arg)
1884{
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02001885 struct hci_dev *hdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886 struct hci_dev_list_req *dl;
1887 struct hci_dev_req *dr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001888 int n = 0, size, err;
1889 __u16 dev_num;
1890
1891 if (get_user(dev_num, (__u16 __user *) arg))
1892 return -EFAULT;
1893
1894 if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr))
1895 return -EINVAL;
1896
1897 size = sizeof(*dl) + dev_num * sizeof(*dr);
1898
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001899 dl = kzalloc(size, GFP_KERNEL);
1900 if (!dl)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901 return -ENOMEM;
1902
1903 dr = dl->dev_req;
1904
Gustavo F. Padovanf20d09d2011-12-22 16:30:27 -02001905 read_lock(&hci_dev_list_lock);
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02001906 list_for_each_entry(hdev, &hci_dev_list, list) {
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001907 unsigned long flags = hdev->flags;
Johan Hedbergc542a062011-01-26 13:11:03 +02001908
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001909 /* When the auto-off is configured it means the transport
1910 * is running, but in that case still indicate that the
1911 * device is actually down.
1912 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001913 if (hci_dev_test_flag(hdev, HCI_AUTO_OFF))
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001914 flags &= ~BIT(HCI_UP);
Johan Hedbergc542a062011-01-26 13:11:03 +02001915
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916 (dr + n)->dev_id = hdev->id;
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001917 (dr + n)->dev_opt = flags;
Johan Hedbergc542a062011-01-26 13:11:03 +02001918
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919 if (++n >= dev_num)
1920 break;
1921 }
Gustavo F. Padovanf20d09d2011-12-22 16:30:27 -02001922 read_unlock(&hci_dev_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923
1924 dl->dev_num = n;
1925 size = sizeof(*dl) + n * sizeof(*dr);
1926
1927 err = copy_to_user(arg, dl, size);
1928 kfree(dl);
1929
1930 return err ? -EFAULT : 0;
1931}
1932
1933int hci_get_dev_info(void __user *arg)
1934{
1935 struct hci_dev *hdev;
1936 struct hci_dev_info di;
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001937 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938 int err = 0;
1939
1940 if (copy_from_user(&di, arg, sizeof(di)))
1941 return -EFAULT;
1942
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02001943 hdev = hci_dev_get(di.dev_id);
1944 if (!hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945 return -ENODEV;
1946
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001947 /* When the auto-off is configured it means the transport
1948 * is running, but in that case still indicate that the
1949 * device is actually down.
1950 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001951 if (hci_dev_test_flag(hdev, HCI_AUTO_OFF))
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001952 flags = hdev->flags & ~BIT(HCI_UP);
1953 else
1954 flags = hdev->flags;
Johan Hedbergc542a062011-01-26 13:11:03 +02001955
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956 strcpy(di.name, hdev->name);
1957 di.bdaddr = hdev->bdaddr;
Marcel Holtmann60f2a3e2013-10-01 22:59:20 -07001958 di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4);
Marcel Holtmann2e84d8d2014-07-10 13:17:37 +02001959 di.flags = flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 di.pkt_type = hdev->pkt_type;
Johan Hedberg572c7f82012-10-19 20:57:46 +03001961 if (lmp_bredr_capable(hdev)) {
1962 di.acl_mtu = hdev->acl_mtu;
1963 di.acl_pkts = hdev->acl_pkts;
1964 di.sco_mtu = hdev->sco_mtu;
1965 di.sco_pkts = hdev->sco_pkts;
1966 } else {
1967 di.acl_mtu = hdev->le_mtu;
1968 di.acl_pkts = hdev->le_pkts;
1969 di.sco_mtu = 0;
1970 di.sco_pkts = 0;
1971 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 di.link_policy = hdev->link_policy;
1973 di.link_mode = hdev->link_mode;
1974
1975 memcpy(&di.stat, &hdev->stat, sizeof(di.stat));
1976 memcpy(&di.features, &hdev->features, sizeof(di.features));
1977
1978 if (copy_to_user(arg, &di, sizeof(di)))
1979 err = -EFAULT;
1980
1981 hci_dev_put(hdev);
1982
1983 return err;
1984}
1985
1986/* ---- Interface to HCI drivers ---- */
1987
Marcel Holtmann611b30f2009-06-08 14:41:38 +02001988static int hci_rfkill_set_block(void *data, bool blocked)
1989{
1990 struct hci_dev *hdev = data;
1991
1992 BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked);
1993
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001994 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
Marcel Holtmann0736cfa2013-08-26 21:40:51 -07001995 return -EBUSY;
1996
Johan Hedberg5e130362013-09-13 08:58:17 +03001997 if (blocked) {
Marcel Holtmanna1536da2015-03-13 02:11:01 -07001998 hci_dev_set_flag(hdev, HCI_RFKILLED);
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07001999 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
2000 !hci_dev_test_flag(hdev, HCI_CONFIG))
Johan Hedbergbf543032013-09-13 08:58:18 +03002001 hci_dev_do_close(hdev);
Johan Hedberg5e130362013-09-13 08:58:17 +03002002 } else {
Marcel Holtmanna358dc12015-03-13 02:11:02 -07002003 hci_dev_clear_flag(hdev, HCI_RFKILLED);
Gustavo Padovan1025c042013-09-27 11:56:14 -03002004 }
Marcel Holtmann611b30f2009-06-08 14:41:38 +02002005
2006 return 0;
2007}
2008
2009static const struct rfkill_ops hci_rfkill_ops = {
2010 .set_block = hci_rfkill_set_block,
2011};
2012
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002013static void hci_power_on(struct work_struct *work)
2014{
2015 struct hci_dev *hdev = container_of(work, struct hci_dev, power_on);
Johan Hedberg96570ff2013-05-29 09:51:29 +03002016 int err;
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002017
2018 BT_DBG("%s", hdev->name);
2019
Johan Hedberg2ff13892015-11-25 16:15:44 +02002020 if (test_bit(HCI_UP, &hdev->flags) &&
2021 hci_dev_test_flag(hdev, HCI_MGMT) &&
2022 hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
Wei-Ning Huangd82142a2016-02-15 17:09:51 +08002023 cancel_delayed_work(&hdev->power_off);
Johan Hedberg2ff13892015-11-25 16:15:44 +02002024 hci_req_sync_lock(hdev);
2025 err = __hci_req_hci_power_on(hdev);
2026 hci_req_sync_unlock(hdev);
2027 mgmt_power_on(hdev, err);
2028 return;
2029 }
2030
Johan Hedbergcbed0ca2013-10-01 22:44:49 +03002031 err = hci_dev_do_open(hdev);
Johan Hedberg96570ff2013-05-29 09:51:29 +03002032 if (err < 0) {
Jaganath Kanakkassery3ad67582014-12-11 11:43:12 +05302033 hci_dev_lock(hdev);
Johan Hedberg96570ff2013-05-29 09:51:29 +03002034 mgmt_set_powered_failed(hdev, err);
Jaganath Kanakkassery3ad67582014-12-11 11:43:12 +05302035 hci_dev_unlock(hdev);
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002036 return;
Johan Hedberg96570ff2013-05-29 09:51:29 +03002037 }
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002038
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07002039 /* During the HCI setup phase, a few error conditions are
2040 * ignored and they need to be checked now. If they are still
2041 * valid, it is important to turn the device back off.
2042 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07002043 if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
2044 hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
Marcel Holtmannca8bee52016-07-05 14:30:14 +02002045 (hdev->dev_type == HCI_PRIMARY &&
Marcel Holtmanna5c8f272013-10-06 01:08:57 -07002046 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
2047 !bacmp(&hdev->static_addr, BDADDR_ANY))) {
Marcel Holtmanna358dc12015-03-13 02:11:02 -07002048 hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
Johan Hedbergbf543032013-09-13 08:58:18 +03002049 hci_dev_do_close(hdev);
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07002050 } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
Johan Hedberg19202572013-01-14 22:33:51 +02002051 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
2052 HCI_AUTO_OFF_TIMEOUT);
Johan Hedbergbf543032013-09-13 08:58:18 +03002053 }
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002054
Marcel Holtmanna69d8922015-03-13 02:11:05 -07002055 if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
Marcel Holtmann4a964402014-07-02 19:10:33 +02002056 /* For unconfigured devices, set the HCI_RAW flag
2057 * so that userspace can easily identify them.
Marcel Holtmann4a964402014-07-02 19:10:33 +02002058 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07002059 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
Marcel Holtmann4a964402014-07-02 19:10:33 +02002060 set_bit(HCI_RAW, &hdev->flags);
Marcel Holtmann0602a8a2014-07-02 21:30:54 +02002061
2062 /* For fully configured devices, this will send
2063 * the Index Added event. For unconfigured devices,
2064 * it will send Unconfigued Index Added event.
2065 *
2066 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
2067 * and no event will be send.
2068 */
Johan Hedberg744cf192011-11-08 20:40:14 +02002069 mgmt_index_added(hdev);
Marcel Holtmanna69d8922015-03-13 02:11:05 -07002070 } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
Marcel Holtmann5ea234d2014-07-06 12:11:16 +02002071 /* When the controller is now configured, then it
2072 * is important to clear the HCI_RAW flag.
2073 */
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07002074 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
Marcel Holtmann5ea234d2014-07-06 12:11:16 +02002075 clear_bit(HCI_RAW, &hdev->flags);
2076
Marcel Holtmannd603b76b2014-07-06 12:11:14 +02002077 /* Powering on the controller with HCI_CONFIG set only
2078 * happens with the transition from unconfigured to
2079 * configured. This will send the Index Added event.
2080 */
2081 mgmt_index_added(hdev);
Marcel Holtmannfee746b2014-06-29 12:13:05 +02002082 }
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002083}
2084
2085static void hci_power_off(struct work_struct *work)
2086{
Johan Hedberg32435532011-11-07 22:16:04 +02002087 struct hci_dev *hdev = container_of(work, struct hci_dev,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03002088 power_off.work);
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002089
2090 BT_DBG("%s", hdev->name);
2091
Marcel Holtmann8ee56542012-02-21 12:33:48 +01002092 hci_dev_do_close(hdev);
Johan Hedbergab81cbf2010-12-15 13:53:18 +02002093}
2094
Marcel Holtmannc7741d12015-01-28 11:09:55 -08002095static void hci_error_reset(struct work_struct *work)
2096{
2097 struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset);
2098
2099 BT_DBG("%s", hdev->name);
2100
2101 if (hdev->hw_error)
2102 hdev->hw_error(hdev, hdev->hw_error_code);
2103 else
2104 BT_ERR("%s hardware error 0x%2.2x", hdev->name,
2105 hdev->hw_error_code);
2106
2107 if (hci_dev_do_close(hdev))
2108 return;
2109
Marcel Holtmannc7741d12015-01-28 11:09:55 -08002110 hci_dev_do_open(hdev);
2111}
2112
Johan Hedberg35f74982014-02-18 17:14:32 +02002113void hci_uuids_clear(struct hci_dev *hdev)
Johan Hedberg2aeb9a12011-01-04 12:08:51 +02002114{
Johan Hedberg48210022013-01-27 00:31:28 +02002115 struct bt_uuid *uuid, *tmp;
Johan Hedberg2aeb9a12011-01-04 12:08:51 +02002116
Johan Hedberg48210022013-01-27 00:31:28 +02002117 list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) {
2118 list_del(&uuid->list);
Johan Hedberg2aeb9a12011-01-04 12:08:51 +02002119 kfree(uuid);
2120 }
Johan Hedberg2aeb9a12011-01-04 12:08:51 +02002121}
2122
Johan Hedberg35f74982014-02-18 17:14:32 +02002123void hci_link_keys_clear(struct hci_dev *hdev)
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002124{
Johan Hedberg0378b592014-11-19 15:22:22 +02002125 struct link_key *key;
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002126
Johan Hedberg0378b592014-11-19 15:22:22 +02002127 list_for_each_entry_rcu(key, &hdev->link_keys, list) {
2128 list_del_rcu(&key->list);
2129 kfree_rcu(key, rcu);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002130 }
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002131}
2132
Johan Hedberg35f74982014-02-18 17:14:32 +02002133void hci_smp_ltks_clear(struct hci_dev *hdev)
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002134{
Johan Hedberg970d0f12014-11-13 14:37:47 +02002135 struct smp_ltk *k;
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002136
Johan Hedberg970d0f12014-11-13 14:37:47 +02002137 list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
2138 list_del_rcu(&k->list);
2139 kfree_rcu(k, rcu);
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002140 }
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002141}
2142
Johan Hedberg970c4e42014-02-18 10:19:33 +02002143void hci_smp_irks_clear(struct hci_dev *hdev)
2144{
Johan Hedbergadae20c2014-11-13 14:37:48 +02002145 struct smp_irk *k;
Johan Hedberg970c4e42014-02-18 10:19:33 +02002146
Johan Hedbergadae20c2014-11-13 14:37:48 +02002147 list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) {
2148 list_del_rcu(&k->list);
2149 kfree_rcu(k, rcu);
Johan Hedberg970c4e42014-02-18 10:19:33 +02002150 }
2151}
2152
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002153struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
2154{
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02002155 struct link_key *k;
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002156
Johan Hedberg0378b592014-11-19 15:22:22 +02002157 rcu_read_lock();
2158 list_for_each_entry_rcu(k, &hdev->link_keys, list) {
2159 if (bacmp(bdaddr, &k->bdaddr) == 0) {
2160 rcu_read_unlock();
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002161 return k;
Johan Hedberg0378b592014-11-19 15:22:22 +02002162 }
2163 }
2164 rcu_read_unlock();
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002165
2166 return NULL;
2167}
2168
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302169static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03002170 u8 key_type, u8 old_key_type)
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002171{
2172 /* Legacy key */
2173 if (key_type < 0x03)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302174 return true;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002175
2176 /* Debug keys are insecure so don't store them persistently */
2177 if (key_type == HCI_LK_DEBUG_COMBINATION)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302178 return false;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002179
2180 /* Changed combination key and there's no previous one */
2181 if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302182 return false;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002183
2184 /* Security mode 3 case */
2185 if (!conn)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302186 return true;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002187
Johan Hedberge3befab2014-06-01 16:33:39 +03002188 /* BR/EDR key derived using SC from an LE link */
2189 if (conn->type == LE_LINK)
2190 return true;
2191
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002192 /* Neither local nor remote side had no-bonding as requirement */
2193 if (conn->auth_type > 0x01 && conn->remote_auth > 0x01)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302194 return true;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002195
2196 /* Local side had dedicated bonding as requirement */
2197 if (conn->auth_type == 0x02 || conn->auth_type == 0x03)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302198 return true;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002199
2200 /* Remote side had dedicated bonding as requirement */
2201 if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03)
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302202 return true;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002203
2204 /* If none of the above criteria match, then don't store the key
2205 * persistently */
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302206 return false;
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002207}
2208
Johan Hedberge804d252014-07-16 11:42:28 +03002209static u8 ltk_role(u8 type)
Johan Hedberg98a0b842014-01-30 19:40:00 -08002210{
Johan Hedberge804d252014-07-16 11:42:28 +03002211 if (type == SMP_LTK)
2212 return HCI_ROLE_MASTER;
Johan Hedberg98a0b842014-01-30 19:40:00 -08002213
Johan Hedberge804d252014-07-16 11:42:28 +03002214 return HCI_ROLE_SLAVE;
Johan Hedberg98a0b842014-01-30 19:40:00 -08002215}
2216
Johan Hedbergf3a73d92014-05-29 15:02:59 +03002217struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
2218 u8 addr_type, u8 role)
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002219{
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002220 struct smp_ltk *k;
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002221
Johan Hedberg970d0f12014-11-13 14:37:47 +02002222 rcu_read_lock();
2223 list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
Johan Hedberg5378bc52014-05-29 14:00:39 +03002224 if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr))
2225 continue;
2226
Johan Hedberg923e2412014-12-03 12:43:39 +02002227 if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) {
Johan Hedberg970d0f12014-11-13 14:37:47 +02002228 rcu_read_unlock();
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002229 return k;
Johan Hedberg970d0f12014-11-13 14:37:47 +02002230 }
2231 }
2232 rcu_read_unlock();
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002233
2234 return NULL;
2235}
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002236
Johan Hedberg970c4e42014-02-18 10:19:33 +02002237struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa)
2238{
2239 struct smp_irk *irk;
2240
Johan Hedbergadae20c2014-11-13 14:37:48 +02002241 rcu_read_lock();
2242 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
2243 if (!bacmp(&irk->rpa, rpa)) {
2244 rcu_read_unlock();
Johan Hedberg970c4e42014-02-18 10:19:33 +02002245 return irk;
2246 }
2247 }
2248
Johan Hedbergadae20c2014-11-13 14:37:48 +02002249 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
2250 if (smp_irk_matches(hdev, irk->val, rpa)) {
2251 bacpy(&irk->rpa, rpa);
2252 rcu_read_unlock();
2253 return irk;
2254 }
2255 }
2256 rcu_read_unlock();
2257
Johan Hedberg970c4e42014-02-18 10:19:33 +02002258 return NULL;
2259}
2260
2261struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
2262 u8 addr_type)
2263{
2264 struct smp_irk *irk;
2265
Johan Hedberg6cfc9982014-02-18 21:41:35 +02002266 /* Identity Address must be public or static random */
2267 if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0)
2268 return NULL;
2269
Johan Hedbergadae20c2014-11-13 14:37:48 +02002270 rcu_read_lock();
2271 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
Johan Hedberg970c4e42014-02-18 10:19:33 +02002272 if (addr_type == irk->addr_type &&
Johan Hedbergadae20c2014-11-13 14:37:48 +02002273 bacmp(bdaddr, &irk->bdaddr) == 0) {
2274 rcu_read_unlock();
Johan Hedberg970c4e42014-02-18 10:19:33 +02002275 return irk;
Johan Hedbergadae20c2014-11-13 14:37:48 +02002276 }
Johan Hedberg970c4e42014-02-18 10:19:33 +02002277 }
Johan Hedbergadae20c2014-11-13 14:37:48 +02002278 rcu_read_unlock();
Johan Hedberg970c4e42014-02-18 10:19:33 +02002279
2280 return NULL;
2281}
2282
Johan Hedberg567fa2a2014-06-24 13:15:48 +03002283struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
Johan Hedberg7652ff62014-06-24 13:15:49 +03002284 bdaddr_t *bdaddr, u8 *val, u8 type,
2285 u8 pin_len, bool *persistent)
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002286{
2287 struct link_key *key, *old_key;
Vishal Agarwal745c0ce2012-04-13 17:43:22 +05302288 u8 old_key_type;
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002289
2290 old_key = hci_find_link_key(hdev, bdaddr);
2291 if (old_key) {
2292 old_key_type = old_key->type;
2293 key = old_key;
2294 } else {
Johan Hedberg12adcf32011-04-28 11:29:00 -07002295 old_key_type = conn ? conn->key_type : 0xff;
Johan Hedberg0a14ab42014-02-19 14:57:43 +02002296 key = kzalloc(sizeof(*key), GFP_KERNEL);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002297 if (!key)
Johan Hedberg567fa2a2014-06-24 13:15:48 +03002298 return NULL;
Johan Hedberg0378b592014-11-19 15:22:22 +02002299 list_add_rcu(&key->list, &hdev->link_keys);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002300 }
2301
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03002302 BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002303
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002304 /* Some buggy controller combinations generate a changed
2305 * combination key for legacy pairing even when there's no
2306 * previous key */
2307 if (type == HCI_LK_CHANGED_COMBINATION &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03002308 (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) {
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002309 type = HCI_LK_COMBINATION;
Johan Hedberg655fe6e2011-04-28 11:29:01 -07002310 if (conn)
2311 conn->key_type = type;
2312 }
Johan Hedbergd25e28a2011-04-28 11:28:59 -07002313
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002314 bacpy(&key->bdaddr, bdaddr);
Andrei Emeltchenko9b3b4462012-05-23 11:31:20 +03002315 memcpy(key->val, val, HCI_LINK_KEY_SIZE);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002316 key->pin_len = pin_len;
2317
Waldemar Rymarkiewiczb6020ba2011-04-28 12:07:53 +02002318 if (type == HCI_LK_CHANGED_COMBINATION)
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002319 key->type = old_key_type;
Johan Hedberg4748fed2011-04-28 11:29:02 -07002320 else
2321 key->type = type;
2322
Johan Hedberg7652ff62014-06-24 13:15:49 +03002323 if (persistent)
2324 *persistent = hci_persistent_key(hdev, conn, type,
2325 old_key_type);
Johan Hedberg4df378a2011-04-28 11:29:03 -07002326
Johan Hedberg567fa2a2014-06-24 13:15:48 +03002327 return key;
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002328}
2329
Johan Hedbergca9142b2014-02-19 14:57:44 +02002330struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
Johan Hedberg35d70272014-02-19 14:57:47 +02002331 u8 addr_type, u8 type, u8 authenticated,
Marcel Holtmannfe39c7b2014-02-27 16:00:28 -08002332 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand)
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002333{
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002334 struct smp_ltk *key, *old_key;
Johan Hedberge804d252014-07-16 11:42:28 +03002335 u8 role = ltk_role(type);
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002336
Johan Hedbergf3a73d92014-05-29 15:02:59 +03002337 old_key = hci_find_ltk(hdev, bdaddr, addr_type, role);
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002338 if (old_key)
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002339 key = old_key;
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002340 else {
Johan Hedberg0a14ab42014-02-19 14:57:43 +02002341 key = kzalloc(sizeof(*key), GFP_KERNEL);
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002342 if (!key)
Johan Hedbergca9142b2014-02-19 14:57:44 +02002343 return NULL;
Johan Hedberg970d0f12014-11-13 14:37:47 +02002344 list_add_rcu(&key->list, &hdev->long_term_keys);
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002345 }
2346
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002347 bacpy(&key->bdaddr, bdaddr);
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002348 key->bdaddr_type = addr_type;
2349 memcpy(key->val, tk, sizeof(key->val));
2350 key->authenticated = authenticated;
2351 key->ediv = ediv;
Marcel Holtmannfe39c7b2014-02-27 16:00:28 -08002352 key->rand = rand;
Vinicius Costa Gomesc9839a12012-02-02 21:08:01 -03002353 key->enc_size = enc_size;
2354 key->type = type;
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002355
Johan Hedbergca9142b2014-02-19 14:57:44 +02002356 return key;
Vinicius Costa Gomes75d262c2011-07-07 18:59:36 -03002357}
2358
Johan Hedbergca9142b2014-02-19 14:57:44 +02002359struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
2360 u8 addr_type, u8 val[16], bdaddr_t *rpa)
Johan Hedberg970c4e42014-02-18 10:19:33 +02002361{
2362 struct smp_irk *irk;
2363
2364 irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type);
2365 if (!irk) {
2366 irk = kzalloc(sizeof(*irk), GFP_KERNEL);
2367 if (!irk)
Johan Hedbergca9142b2014-02-19 14:57:44 +02002368 return NULL;
Johan Hedberg970c4e42014-02-18 10:19:33 +02002369
2370 bacpy(&irk->bdaddr, bdaddr);
2371 irk->addr_type = addr_type;
2372
Johan Hedbergadae20c2014-11-13 14:37:48 +02002373 list_add_rcu(&irk->list, &hdev->identity_resolving_keys);
Johan Hedberg970c4e42014-02-18 10:19:33 +02002374 }
2375
2376 memcpy(irk->val, val, 16);
2377 bacpy(&irk->rpa, rpa);
2378
Johan Hedbergca9142b2014-02-19 14:57:44 +02002379 return irk;
Johan Hedberg970c4e42014-02-18 10:19:33 +02002380}
2381
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002382int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
2383{
2384 struct link_key *key;
2385
2386 key = hci_find_link_key(hdev, bdaddr);
2387 if (!key)
2388 return -ENOENT;
2389
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03002390 BT_DBG("%s removing %pMR", hdev->name, bdaddr);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002391
Johan Hedberg0378b592014-11-19 15:22:22 +02002392 list_del_rcu(&key->list);
2393 kfree_rcu(key, rcu);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02002394
2395 return 0;
2396}
2397
Johan Hedberge0b2b272014-02-18 17:14:31 +02002398int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type)
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002399{
Johan Hedberg970d0f12014-11-13 14:37:47 +02002400 struct smp_ltk *k;
Johan Hedbergc51ffa02014-02-18 17:14:33 +02002401 int removed = 0;
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002402
Johan Hedberg970d0f12014-11-13 14:37:47 +02002403 list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
Johan Hedberge0b2b272014-02-18 17:14:31 +02002404 if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type)
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002405 continue;
2406
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03002407 BT_DBG("%s removing %pMR", hdev->name, bdaddr);
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002408
Johan Hedberg970d0f12014-11-13 14:37:47 +02002409 list_del_rcu(&k->list);
2410 kfree_rcu(k, rcu);
Johan Hedbergc51ffa02014-02-18 17:14:33 +02002411 removed++;
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002412 }
2413
Johan Hedbergc51ffa02014-02-18 17:14:33 +02002414 return removed ? 0 : -ENOENT;
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03002415}
2416
Johan Hedberga7ec7332014-02-18 17:14:35 +02002417void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type)
2418{
Johan Hedbergadae20c2014-11-13 14:37:48 +02002419 struct smp_irk *k;
Johan Hedberga7ec7332014-02-18 17:14:35 +02002420
Johan Hedbergadae20c2014-11-13 14:37:48 +02002421 list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) {
Johan Hedberga7ec7332014-02-18 17:14:35 +02002422 if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type)
2423 continue;
2424
2425 BT_DBG("%s removing %pMR", hdev->name, bdaddr);
2426
Johan Hedbergadae20c2014-11-13 14:37:48 +02002427 list_del_rcu(&k->list);
2428 kfree_rcu(k, rcu);
Johan Hedberga7ec7332014-02-18 17:14:35 +02002429 }
2430}
2431
Johan Hedberg55e76b32015-03-10 22:34:40 +02002432bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
2433{
2434 struct smp_ltk *k;
Johan Hedberg4ba9faf2015-03-11 10:52:08 +02002435 struct smp_irk *irk;
Johan Hedberg55e76b32015-03-10 22:34:40 +02002436 u8 addr_type;
2437
2438 if (type == BDADDR_BREDR) {
2439 if (hci_find_link_key(hdev, bdaddr))
2440 return true;
2441 return false;
2442 }
2443
2444 /* Convert to HCI addr type which struct smp_ltk uses */
2445 if (type == BDADDR_LE_PUBLIC)
2446 addr_type = ADDR_LE_DEV_PUBLIC;
2447 else
2448 addr_type = ADDR_LE_DEV_RANDOM;
2449
Johan Hedberg4ba9faf2015-03-11 10:52:08 +02002450 irk = hci_get_irk(hdev, bdaddr, addr_type);
2451 if (irk) {
2452 bdaddr = &irk->bdaddr;
2453 addr_type = irk->addr_type;
2454 }
2455
Johan Hedberg55e76b32015-03-10 22:34:40 +02002456 rcu_read_lock();
2457 list_for_each_entry_rcu(k, &hdev->long_term_keys, list) {
Johan Hedberg87c8b282015-03-11 08:55:51 +02002458 if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) {
2459 rcu_read_unlock();
Johan Hedberg55e76b32015-03-10 22:34:40 +02002460 return true;
Johan Hedberg87c8b282015-03-11 08:55:51 +02002461 }
Johan Hedberg55e76b32015-03-10 22:34:40 +02002462 }
2463 rcu_read_unlock();
2464
2465 return false;
2466}
2467
Ville Tervo6bd32322011-02-16 16:32:41 +02002468/* HCI command timer function */
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02002469static void hci_cmd_timeout(struct work_struct *work)
Ville Tervo6bd32322011-02-16 16:32:41 +02002470{
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02002471 struct hci_dev *hdev = container_of(work, struct hci_dev,
2472 cmd_timer.work);
Ville Tervo6bd32322011-02-16 16:32:41 +02002473
Andrei Emeltchenkobda4f232012-06-11 11:13:08 +03002474 if (hdev->sent_cmd) {
2475 struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data;
2476 u16 opcode = __le16_to_cpu(sent->opcode);
2477
2478 BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode);
2479 } else {
2480 BT_ERR("%s command tx timeout", hdev->name);
2481 }
2482
Ville Tervo6bd32322011-02-16 16:32:41 +02002483 atomic_set(&hdev->cmd_cnt, 1);
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02002484 queue_work(hdev->workqueue, &hdev->cmd_work);
Ville Tervo6bd32322011-02-16 16:32:41 +02002485}
2486
Szymon Janc2763eda2011-03-22 13:12:22 +01002487struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
Johan Hedberg6928a922014-10-26 20:46:09 +01002488 bdaddr_t *bdaddr, u8 bdaddr_type)
Szymon Janc2763eda2011-03-22 13:12:22 +01002489{
2490 struct oob_data *data;
2491
Johan Hedberg6928a922014-10-26 20:46:09 +01002492 list_for_each_entry(data, &hdev->remote_oob_data, list) {
2493 if (bacmp(bdaddr, &data->bdaddr) != 0)
2494 continue;
2495 if (data->bdaddr_type != bdaddr_type)
2496 continue;
2497 return data;
2498 }
Szymon Janc2763eda2011-03-22 13:12:22 +01002499
2500 return NULL;
2501}
2502
Johan Hedberg6928a922014-10-26 20:46:09 +01002503int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
2504 u8 bdaddr_type)
Szymon Janc2763eda2011-03-22 13:12:22 +01002505{
2506 struct oob_data *data;
2507
Johan Hedberg6928a922014-10-26 20:46:09 +01002508 data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type);
Szymon Janc2763eda2011-03-22 13:12:22 +01002509 if (!data)
2510 return -ENOENT;
2511
Johan Hedberg6928a922014-10-26 20:46:09 +01002512 BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type);
Szymon Janc2763eda2011-03-22 13:12:22 +01002513
2514 list_del(&data->list);
2515 kfree(data);
2516
2517 return 0;
2518}
2519
Johan Hedberg35f74982014-02-18 17:14:32 +02002520void hci_remote_oob_data_clear(struct hci_dev *hdev)
Szymon Janc2763eda2011-03-22 13:12:22 +01002521{
2522 struct oob_data *data, *n;
2523
2524 list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) {
2525 list_del(&data->list);
2526 kfree(data);
2527 }
Szymon Janc2763eda2011-03-22 13:12:22 +01002528}
2529
Marcel Holtmann07988722014-01-10 02:07:29 -08002530int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
Johan Hedberg6928a922014-10-26 20:46:09 +01002531 u8 bdaddr_type, u8 *hash192, u8 *rand192,
Johan Hedberg81328d5c2014-10-26 20:33:47 +01002532 u8 *hash256, u8 *rand256)
Szymon Janc2763eda2011-03-22 13:12:22 +01002533{
2534 struct oob_data *data;
2535
Johan Hedberg6928a922014-10-26 20:46:09 +01002536 data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type);
Szymon Janc2763eda2011-03-22 13:12:22 +01002537 if (!data) {
Johan Hedberg0a14ab42014-02-19 14:57:43 +02002538 data = kmalloc(sizeof(*data), GFP_KERNEL);
Szymon Janc2763eda2011-03-22 13:12:22 +01002539 if (!data)
2540 return -ENOMEM;
2541
2542 bacpy(&data->bdaddr, bdaddr);
Johan Hedberg6928a922014-10-26 20:46:09 +01002543 data->bdaddr_type = bdaddr_type;
Szymon Janc2763eda2011-03-22 13:12:22 +01002544 list_add(&data->list, &hdev->remote_oob_data);
2545 }
2546
Johan Hedberg81328d5c2014-10-26 20:33:47 +01002547 if (hash192 && rand192) {
2548 memcpy(data->hash192, hash192, sizeof(data->hash192));
2549 memcpy(data->rand192, rand192, sizeof(data->rand192));
Marcel Holtmannf7697b12015-01-30 23:20:55 -08002550 if (hash256 && rand256)
2551 data->present = 0x03;
Johan Hedberg81328d5c2014-10-26 20:33:47 +01002552 } else {
2553 memset(data->hash192, 0, sizeof(data->hash192));
2554 memset(data->rand192, 0, sizeof(data->rand192));
Marcel Holtmannf7697b12015-01-30 23:20:55 -08002555 if (hash256 && rand256)
2556 data->present = 0x02;
2557 else
2558 data->present = 0x00;
Marcel Holtmann07988722014-01-10 02:07:29 -08002559 }
2560
Johan Hedberg81328d5c2014-10-26 20:33:47 +01002561 if (hash256 && rand256) {
2562 memcpy(data->hash256, hash256, sizeof(data->hash256));
2563 memcpy(data->rand256, rand256, sizeof(data->rand256));
2564 } else {
2565 memset(data->hash256, 0, sizeof(data->hash256));
2566 memset(data->rand256, 0, sizeof(data->rand256));
Marcel Holtmannf7697b12015-01-30 23:20:55 -08002567 if (hash192 && rand192)
2568 data->present = 0x01;
Johan Hedberg81328d5c2014-10-26 20:33:47 +01002569 }
Marcel Holtmann07988722014-01-10 02:07:29 -08002570
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03002571 BT_DBG("%s for %pMR", hdev->name, bdaddr);
Szymon Janc2763eda2011-03-22 13:12:22 +01002572
2573 return 0;
2574}
2575
Florian Grandeld2609b32015-06-18 03:16:34 +02002576/* This function requires the caller holds hdev->lock */
2577struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance)
2578{
2579 struct adv_info *adv_instance;
2580
2581 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
2582 if (adv_instance->instance == instance)
2583 return adv_instance;
2584 }
2585
2586 return NULL;
2587}
2588
2589/* This function requires the caller holds hdev->lock */
Prasanna Karthik74b93e92015-11-18 12:38:41 +00002590struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance)
2591{
Florian Grandeld2609b32015-06-18 03:16:34 +02002592 struct adv_info *cur_instance;
2593
2594 cur_instance = hci_find_adv_instance(hdev, instance);
2595 if (!cur_instance)
2596 return NULL;
2597
2598 if (cur_instance == list_last_entry(&hdev->adv_instances,
2599 struct adv_info, list))
2600 return list_first_entry(&hdev->adv_instances,
2601 struct adv_info, list);
2602 else
2603 return list_next_entry(cur_instance, list);
2604}
2605
2606/* This function requires the caller holds hdev->lock */
2607int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance)
2608{
2609 struct adv_info *adv_instance;
2610
2611 adv_instance = hci_find_adv_instance(hdev, instance);
2612 if (!adv_instance)
2613 return -ENOENT;
2614
2615 BT_DBG("%s removing %dMR", hdev->name, instance);
2616
Johan Hedbergcab054a2015-11-30 11:21:45 +02002617 if (hdev->cur_adv_instance == instance) {
2618 if (hdev->adv_instance_timeout) {
2619 cancel_delayed_work(&hdev->adv_instance_expire);
2620 hdev->adv_instance_timeout = 0;
2621 }
2622 hdev->cur_adv_instance = 0x00;
Florian Grandel5d900e42015-06-18 03:16:35 +02002623 }
2624
Florian Grandeld2609b32015-06-18 03:16:34 +02002625 list_del(&adv_instance->list);
2626 kfree(adv_instance);
2627
2628 hdev->adv_instance_cnt--;
2629
2630 return 0;
2631}
2632
2633/* This function requires the caller holds hdev->lock */
2634void hci_adv_instances_clear(struct hci_dev *hdev)
2635{
2636 struct adv_info *adv_instance, *n;
2637
Florian Grandel5d900e42015-06-18 03:16:35 +02002638 if (hdev->adv_instance_timeout) {
2639 cancel_delayed_work(&hdev->adv_instance_expire);
2640 hdev->adv_instance_timeout = 0;
2641 }
2642
Florian Grandeld2609b32015-06-18 03:16:34 +02002643 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
2644 list_del(&adv_instance->list);
2645 kfree(adv_instance);
2646 }
2647
2648 hdev->adv_instance_cnt = 0;
Johan Hedbergcab054a2015-11-30 11:21:45 +02002649 hdev->cur_adv_instance = 0x00;
Florian Grandeld2609b32015-06-18 03:16:34 +02002650}
2651
2652/* This function requires the caller holds hdev->lock */
2653int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
2654 u16 adv_data_len, u8 *adv_data,
2655 u16 scan_rsp_len, u8 *scan_rsp_data,
2656 u16 timeout, u16 duration)
2657{
2658 struct adv_info *adv_instance;
2659
2660 adv_instance = hci_find_adv_instance(hdev, instance);
2661 if (adv_instance) {
2662 memset(adv_instance->adv_data, 0,
2663 sizeof(adv_instance->adv_data));
2664 memset(adv_instance->scan_rsp_data, 0,
2665 sizeof(adv_instance->scan_rsp_data));
2666 } else {
2667 if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES ||
2668 instance < 1 || instance > HCI_MAX_ADV_INSTANCES)
2669 return -EOVERFLOW;
2670
Johan Hedberg39ecfad2015-06-18 20:50:08 +03002671 adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL);
Florian Grandeld2609b32015-06-18 03:16:34 +02002672 if (!adv_instance)
2673 return -ENOMEM;
2674
Florian Grandelfffd38b2015-06-18 03:16:47 +02002675 adv_instance->pending = true;
Florian Grandeld2609b32015-06-18 03:16:34 +02002676 adv_instance->instance = instance;
2677 list_add(&adv_instance->list, &hdev->adv_instances);
2678 hdev->adv_instance_cnt++;
2679 }
2680
2681 adv_instance->flags = flags;
2682 adv_instance->adv_data_len = adv_data_len;
2683 adv_instance->scan_rsp_len = scan_rsp_len;
2684
2685 if (adv_data_len)
2686 memcpy(adv_instance->adv_data, adv_data, adv_data_len);
2687
2688 if (scan_rsp_len)
2689 memcpy(adv_instance->scan_rsp_data,
2690 scan_rsp_data, scan_rsp_len);
2691
2692 adv_instance->timeout = timeout;
Florian Grandel5d900e42015-06-18 03:16:35 +02002693 adv_instance->remaining_time = timeout;
Florian Grandeld2609b32015-06-18 03:16:34 +02002694
2695 if (duration == 0)
2696 adv_instance->duration = HCI_DEFAULT_ADV_DURATION;
2697 else
2698 adv_instance->duration = duration;
2699
2700 BT_DBG("%s for %dMR", hdev->name, instance);
2701
2702 return 0;
2703}
2704
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002705struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list,
Marcel Holtmannb9ee0a72013-10-17 17:24:13 -07002706 bdaddr_t *bdaddr, u8 type)
Antti Julkub2a66aa2011-06-15 12:01:14 +03002707{
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02002708 struct bdaddr_list *b;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002709
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002710 list_for_each_entry(b, bdaddr_list, list) {
Marcel Holtmannb9ee0a72013-10-17 17:24:13 -07002711 if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
Antti Julkub2a66aa2011-06-15 12:01:14 +03002712 return b;
Marcel Holtmannb9ee0a72013-10-17 17:24:13 -07002713 }
Antti Julkub2a66aa2011-06-15 12:01:14 +03002714
2715 return NULL;
2716}
2717
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002718void hci_bdaddr_list_clear(struct list_head *bdaddr_list)
Antti Julkub2a66aa2011-06-15 12:01:14 +03002719{
Geliang Tang7eb74042015-12-18 23:33:25 +08002720 struct bdaddr_list *b, *n;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002721
Geliang Tang7eb74042015-12-18 23:33:25 +08002722 list_for_each_entry_safe(b, n, bdaddr_list, list) {
2723 list_del(&b->list);
Antti Julkub2a66aa2011-06-15 12:01:14 +03002724 kfree(b);
2725 }
Antti Julkub2a66aa2011-06-15 12:01:14 +03002726}
2727
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002728int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type)
Antti Julkub2a66aa2011-06-15 12:01:14 +03002729{
2730 struct bdaddr_list *entry;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002731
Marcel Holtmannb9ee0a72013-10-17 17:24:13 -07002732 if (!bacmp(bdaddr, BDADDR_ANY))
Antti Julkub2a66aa2011-06-15 12:01:14 +03002733 return -EBADF;
2734
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002735 if (hci_bdaddr_list_lookup(list, bdaddr, type))
Antti Julku5e762442011-08-25 16:48:02 +03002736 return -EEXIST;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002737
Johan Hedberg27f70f32014-07-21 10:50:06 +03002738 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
Antti Julku5e762442011-08-25 16:48:02 +03002739 if (!entry)
2740 return -ENOMEM;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002741
2742 bacpy(&entry->bdaddr, bdaddr);
Marcel Holtmannb9ee0a72013-10-17 17:24:13 -07002743 entry->bdaddr_type = type;
Antti Julkub2a66aa2011-06-15 12:01:14 +03002744
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002745 list_add(&entry->list, list);
Marcel Holtmannd2ab0ac2014-02-27 20:37:30 -08002746
2747 return 0;
2748}
2749
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002750int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type)
Marcel Holtmannd2ab0ac2014-02-27 20:37:30 -08002751{
2752 struct bdaddr_list *entry;
2753
Johan Hedberg35f74982014-02-18 17:14:32 +02002754 if (!bacmp(bdaddr, BDADDR_ANY)) {
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002755 hci_bdaddr_list_clear(list);
Johan Hedberg35f74982014-02-18 17:14:32 +02002756 return 0;
2757 }
Marcel Holtmannd2ab0ac2014-02-27 20:37:30 -08002758
Johan Hedbergdcc36c12014-07-09 12:59:13 +03002759 entry = hci_bdaddr_list_lookup(list, bdaddr, type);
Marcel Holtmannd2ab0ac2014-02-27 20:37:30 -08002760 if (!entry)
2761 return -ENOENT;
2762
2763 list_del(&entry->list);
2764 kfree(entry);
2765
2766 return 0;
2767}
2768
Andre Guedes15819a72014-02-03 13:56:18 -03002769/* This function requires the caller holds hdev->lock */
2770struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
2771 bdaddr_t *addr, u8 addr_type)
2772{
2773 struct hci_conn_params *params;
2774
2775 list_for_each_entry(params, &hdev->le_conn_params, list) {
2776 if (bacmp(&params->addr, addr) == 0 &&
2777 params->addr_type == addr_type) {
2778 return params;
2779 }
2780 }
2781
2782 return NULL;
2783}
2784
2785/* This function requires the caller holds hdev->lock */
Johan Hedberg501f8822014-07-04 12:37:26 +03002786struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
2787 bdaddr_t *addr, u8 addr_type)
Andre Guedes15819a72014-02-03 13:56:18 -03002788{
Johan Hedberg912b42e2014-07-03 19:33:49 +03002789 struct hci_conn_params *param;
Andre Guedes15819a72014-02-03 13:56:18 -03002790
Johan Hedberg501f8822014-07-04 12:37:26 +03002791 list_for_each_entry(param, list, action) {
Johan Hedberg912b42e2014-07-03 19:33:49 +03002792 if (bacmp(&param->addr, addr) == 0 &&
2793 param->addr_type == addr_type)
2794 return param;
Marcel Holtmann4b109662014-06-29 13:41:49 +02002795 }
2796
2797 return NULL;
Andre Guedes15819a72014-02-03 13:56:18 -03002798}
2799
2800/* This function requires the caller holds hdev->lock */
Marcel Holtmann51d167c2014-07-01 12:11:04 +02002801struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
2802 bdaddr_t *addr, u8 addr_type)
Andre Guedes15819a72014-02-03 13:56:18 -03002803{
2804 struct hci_conn_params *params;
2805
2806 params = hci_conn_params_lookup(hdev, addr, addr_type);
Andre Guedescef952c2014-02-26 20:21:49 -03002807 if (params)
Marcel Holtmann51d167c2014-07-01 12:11:04 +02002808 return params;
Andre Guedes15819a72014-02-03 13:56:18 -03002809
2810 params = kzalloc(sizeof(*params), GFP_KERNEL);
2811 if (!params) {
2812 BT_ERR("Out of memory");
Marcel Holtmann51d167c2014-07-01 12:11:04 +02002813 return NULL;
Andre Guedes15819a72014-02-03 13:56:18 -03002814 }
2815
2816 bacpy(&params->addr, addr);
2817 params->addr_type = addr_type;
Andre Guedescef952c2014-02-26 20:21:49 -03002818
2819 list_add(&params->list, &hdev->le_conn_params);
Johan Hedberg93450c72014-07-04 12:37:17 +03002820 INIT_LIST_HEAD(&params->action);
Andre Guedescef952c2014-02-26 20:21:49 -03002821
Marcel Holtmannbf5b3c82014-06-30 12:34:39 +02002822 params->conn_min_interval = hdev->le_conn_min_interval;
2823 params->conn_max_interval = hdev->le_conn_max_interval;
2824 params->conn_latency = hdev->le_conn_latency;
2825 params->supervision_timeout = hdev->le_supv_timeout;
2826 params->auto_connect = HCI_AUTO_CONN_DISABLED;
2827
2828 BT_DBG("addr %pMR (type %u)", addr, addr_type);
2829
Marcel Holtmann51d167c2014-07-01 12:11:04 +02002830 return params;
Marcel Holtmannbf5b3c82014-06-30 12:34:39 +02002831}
2832
Johan Hedbergf6c63242014-08-15 21:06:59 +03002833static void hci_conn_params_free(struct hci_conn_params *params)
2834{
2835 if (params->conn) {
2836 hci_conn_drop(params->conn);
2837 hci_conn_put(params->conn);
2838 }
2839
2840 list_del(&params->action);
2841 list_del(&params->list);
2842 kfree(params);
2843}
2844
Andre Guedes15819a72014-02-03 13:56:18 -03002845/* This function requires the caller holds hdev->lock */
2846void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
2847{
2848 struct hci_conn_params *params;
2849
2850 params = hci_conn_params_lookup(hdev, addr, addr_type);
2851 if (!params)
2852 return;
2853
Johan Hedbergf6c63242014-08-15 21:06:59 +03002854 hci_conn_params_free(params);
Andre Guedes15819a72014-02-03 13:56:18 -03002855
Johan Hedberg95305ba2014-07-04 12:37:21 +03002856 hci_update_background_scan(hdev);
2857
Andre Guedes15819a72014-02-03 13:56:18 -03002858 BT_DBG("addr %pMR (type %u)", addr, addr_type);
2859}
2860
2861/* This function requires the caller holds hdev->lock */
Johan Hedberg55af49a82014-07-02 17:37:26 +03002862void hci_conn_params_clear_disabled(struct hci_dev *hdev)
Andre Guedes15819a72014-02-03 13:56:18 -03002863{
2864 struct hci_conn_params *params, *tmp;
2865
2866 list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) {
Johan Hedberg55af49a82014-07-02 17:37:26 +03002867 if (params->auto_connect != HCI_AUTO_CONN_DISABLED)
2868 continue;
Jakub Pawlowskif75113a2015-08-07 20:22:53 +02002869
2870 /* If trying to estabilish one time connection to disabled
2871 * device, leave the params, but mark them as just once.
2872 */
2873 if (params->explicit_connect) {
2874 params->auto_connect = HCI_AUTO_CONN_EXPLICIT;
2875 continue;
2876 }
2877
Andre Guedes15819a72014-02-03 13:56:18 -03002878 list_del(&params->list);
2879 kfree(params);
2880 }
2881
Johan Hedberg55af49a82014-07-02 17:37:26 +03002882 BT_DBG("All LE disabled connection parameters were removed");
2883}
2884
2885/* This function requires the caller holds hdev->lock */
Johan Hedberg030e7f82015-11-10 09:44:53 +02002886static void hci_conn_params_clear_all(struct hci_dev *hdev)
Andre Guedes15819a72014-02-03 13:56:18 -03002887{
2888 struct hci_conn_params *params, *tmp;
2889
Johan Hedbergf6c63242014-08-15 21:06:59 +03002890 list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list)
2891 hci_conn_params_free(params);
Andre Guedes15819a72014-02-03 13:56:18 -03002892
2893 BT_DBG("All LE connection parameters were removed");
2894}
2895
Johan Hedberga1f4c312014-02-27 14:05:41 +02002896/* Copy the Identity Address of the controller.
2897 *
2898 * If the controller has a public BD_ADDR, then by default use that one.
2899 * If this is a LE only controller without a public address, default to
2900 * the static random address.
2901 *
2902 * For debugging purposes it is possible to force controllers with a
2903 * public address to use the static random address instead.
Marcel Holtmann50b5b952014-12-19 23:05:35 +01002904 *
2905 * In case BR/EDR has been disabled on a dual-mode controller and
2906 * userspace has configured a static address, then that address
2907 * becomes the identity address instead of the public BR/EDR address.
Johan Hedberga1f4c312014-02-27 14:05:41 +02002908 */
2909void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2910 u8 *bdaddr_type)
2911{
Marcel Holtmannb7cb93e2015-03-13 10:20:35 -07002912 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
Marcel Holtmann50b5b952014-12-19 23:05:35 +01002913 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07002914 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
Marcel Holtmann50b5b952014-12-19 23:05:35 +01002915 bacmp(&hdev->static_addr, BDADDR_ANY))) {
Johan Hedberga1f4c312014-02-27 14:05:41 +02002916 bacpy(bdaddr, &hdev->static_addr);
2917 *bdaddr_type = ADDR_LE_DEV_RANDOM;
2918 } else {
2919 bacpy(bdaddr, &hdev->bdaddr);
2920 *bdaddr_type = ADDR_LE_DEV_PUBLIC;
2921 }
2922}
2923
David Herrmann9be0dab2012-04-22 14:39:57 +02002924/* Alloc HCI device */
2925struct hci_dev *hci_alloc_dev(void)
2926{
2927 struct hci_dev *hdev;
2928
Johan Hedberg27f70f32014-07-21 10:50:06 +03002929 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
David Herrmann9be0dab2012-04-22 14:39:57 +02002930 if (!hdev)
2931 return NULL;
2932
David Herrmannb1b813d2012-04-22 14:39:58 +02002933 hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1);
2934 hdev->esco_type = (ESCO_HV1);
2935 hdev->link_mode = (HCI_LM_ACCEPT);
Marcel Holtmannb4cb9fb2013-10-14 13:56:16 -07002936 hdev->num_iac = 0x01; /* One IAC support is mandatory */
2937 hdev->io_capability = 0x03; /* No Input No Output */
Marcel Holtmann96c21032014-07-02 11:30:51 +02002938 hdev->manufacturer = 0xffff; /* Default to internal use */
Johan Hedbergbbaf4442012-11-08 01:22:59 +01002939 hdev->inq_tx_power = HCI_TX_POWER_INVALID;
2940 hdev->adv_tx_power = HCI_TX_POWER_INVALID;
Florian Grandeld2609b32015-06-18 03:16:34 +02002941 hdev->adv_instance_cnt = 0;
2942 hdev->cur_adv_instance = 0x00;
Florian Grandel5d900e42015-06-18 03:16:35 +02002943 hdev->adv_instance_timeout = 0;
David Herrmannb1b813d2012-04-22 14:39:58 +02002944
David Herrmannb1b813d2012-04-22 14:39:58 +02002945 hdev->sniff_max_interval = 800;
2946 hdev->sniff_min_interval = 80;
2947
Marcel Holtmann3f959d42014-02-20 11:55:56 -08002948 hdev->le_adv_channel_map = 0x07;
Georg Lukas628531c2014-07-26 13:59:57 +02002949 hdev->le_adv_min_interval = 0x0800;
2950 hdev->le_adv_max_interval = 0x0800;
Marcel Holtmannbef64732013-10-11 08:23:19 -07002951 hdev->le_scan_interval = 0x0060;
2952 hdev->le_scan_window = 0x0030;
Marcel Holtmann4e70c7e2013-10-19 07:09:13 -07002953 hdev->le_conn_min_interval = 0x0028;
2954 hdev->le_conn_max_interval = 0x0038;
Marcel Holtmann04fb7d92014-06-30 12:34:36 +02002955 hdev->le_conn_latency = 0x0000;
2956 hdev->le_supv_timeout = 0x002a;
Marcel Holtmanna8e1bfa2014-12-20 16:28:40 +01002957 hdev->le_def_tx_len = 0x001b;
2958 hdev->le_def_tx_time = 0x0148;
2959 hdev->le_max_tx_len = 0x001b;
2960 hdev->le_max_tx_time = 0x0148;
2961 hdev->le_max_rx_len = 0x001b;
2962 hdev->le_max_rx_time = 0x0148;
Marcel Holtmannbef64732013-10-11 08:23:19 -07002963
Johan Hedbergd6bfd592014-02-23 19:42:20 +02002964 hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT;
Lukasz Rymanowskib9a7a612014-03-27 20:55:20 +01002965 hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT;
Andrzej Kaczmarek31ad1692014-05-14 13:43:02 +02002966 hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE;
2967 hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE;
Johan Hedbergd6bfd592014-02-23 19:42:20 +02002968
David Herrmannb1b813d2012-04-22 14:39:58 +02002969 mutex_init(&hdev->lock);
2970 mutex_init(&hdev->req_lock);
2971
2972 INIT_LIST_HEAD(&hdev->mgmt_pending);
2973 INIT_LIST_HEAD(&hdev->blacklist);
Johan Hedberg66593582014-07-09 12:59:14 +03002974 INIT_LIST_HEAD(&hdev->whitelist);
David Herrmannb1b813d2012-04-22 14:39:58 +02002975 INIT_LIST_HEAD(&hdev->uuids);
2976 INIT_LIST_HEAD(&hdev->link_keys);
2977 INIT_LIST_HEAD(&hdev->long_term_keys);
Johan Hedberg970c4e42014-02-18 10:19:33 +02002978 INIT_LIST_HEAD(&hdev->identity_resolving_keys);
David Herrmannb1b813d2012-04-22 14:39:58 +02002979 INIT_LIST_HEAD(&hdev->remote_oob_data);
Marcel Holtmannd2ab0ac2014-02-27 20:37:30 -08002980 INIT_LIST_HEAD(&hdev->le_white_list);
Andre Guedes15819a72014-02-03 13:56:18 -03002981 INIT_LIST_HEAD(&hdev->le_conn_params);
Andre Guedes77a77a32014-02-26 20:21:46 -03002982 INIT_LIST_HEAD(&hdev->pend_le_conns);
Johan Hedberg66f84552014-07-04 12:37:18 +03002983 INIT_LIST_HEAD(&hdev->pend_le_reports);
Andrei Emeltchenko6b536b52012-08-31 16:39:28 +03002984 INIT_LIST_HEAD(&hdev->conn_hash.list);
Florian Grandeld2609b32015-06-18 03:16:34 +02002985 INIT_LIST_HEAD(&hdev->adv_instances);
David Herrmannb1b813d2012-04-22 14:39:58 +02002986
2987 INIT_WORK(&hdev->rx_work, hci_rx_work);
2988 INIT_WORK(&hdev->cmd_work, hci_cmd_work);
2989 INIT_WORK(&hdev->tx_work, hci_tx_work);
2990 INIT_WORK(&hdev->power_on, hci_power_on);
Marcel Holtmannc7741d12015-01-28 11:09:55 -08002991 INIT_WORK(&hdev->error_reset, hci_error_reset);
David Herrmannb1b813d2012-04-22 14:39:58 +02002992
David Herrmannb1b813d2012-04-22 14:39:58 +02002993 INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
David Herrmannb1b813d2012-04-22 14:39:58 +02002994
David Herrmannb1b813d2012-04-22 14:39:58 +02002995 skb_queue_head_init(&hdev->rx_q);
2996 skb_queue_head_init(&hdev->cmd_q);
2997 skb_queue_head_init(&hdev->raw_q);
2998
2999 init_waitqueue_head(&hdev->req_wait_q);
3000
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02003001 INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout);
David Herrmannb1b813d2012-04-22 14:39:58 +02003002
Johan Hedberg5fc16cc2015-11-11 08:11:16 +02003003 hci_request_setup(hdev);
3004
David Herrmannb1b813d2012-04-22 14:39:58 +02003005 hci_init_sysfs(hdev);
3006 discovery_init(hdev);
David Herrmann9be0dab2012-04-22 14:39:57 +02003007
3008 return hdev;
3009}
3010EXPORT_SYMBOL(hci_alloc_dev);
3011
3012/* Free HCI device */
3013void hci_free_dev(struct hci_dev *hdev)
3014{
David Herrmann9be0dab2012-04-22 14:39:57 +02003015 /* will free via device release */
3016 put_device(&hdev->dev);
3017}
3018EXPORT_SYMBOL(hci_free_dev);
3019
Linus Torvalds1da177e2005-04-16 15:20:36 -07003020/* Register HCI device */
3021int hci_register_dev(struct hci_dev *hdev)
3022{
David Herrmannb1b813d2012-04-22 14:39:58 +02003023 int id, error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003024
Marcel Holtmann74292d52014-07-06 15:50:27 +02003025 if (!hdev->open || !hdev->close || !hdev->send)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003026 return -EINVAL;
3027
Mat Martineau08add512011-11-02 16:18:36 -07003028 /* Do not allow HCI_AMP devices to register at index 0,
3029 * so the index can be used as the AMP controller ID.
3030 */
Sasha Levin3df92b32012-05-27 22:36:56 +02003031 switch (hdev->dev_type) {
Marcel Holtmannca8bee52016-07-05 14:30:14 +02003032 case HCI_PRIMARY:
Sasha Levin3df92b32012-05-27 22:36:56 +02003033 id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL);
3034 break;
3035 case HCI_AMP:
3036 id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL);
3037 break;
3038 default:
3039 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003040 }
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09003041
Sasha Levin3df92b32012-05-27 22:36:56 +02003042 if (id < 0)
3043 return id;
3044
Linus Torvalds1da177e2005-04-16 15:20:36 -07003045 sprintf(hdev->name, "hci%d", id);
3046 hdev->id = id;
Andrei Emeltchenko2d8b3a12012-04-16 16:32:04 +03003047
3048 BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
3049
Kees Cookd8537542013-07-03 15:04:57 -07003050 hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND |
3051 WQ_MEM_RECLAIM, 1, hdev->name);
David Herrmann33ca9542011-10-08 14:58:49 +02003052 if (!hdev->workqueue) {
3053 error = -ENOMEM;
3054 goto err;
3055 }
Marcel Holtmannf48fd9c2010-03-20 15:20:04 +01003056
Kees Cookd8537542013-07-03 15:04:57 -07003057 hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND |
3058 WQ_MEM_RECLAIM, 1, hdev->name);
Johan Hedberg6ead1bb2013-01-14 22:33:50 +02003059 if (!hdev->req_workqueue) {
3060 destroy_workqueue(hdev->workqueue);
3061 error = -ENOMEM;
3062 goto err;
3063 }
3064
Marcel Holtmann0153e2e2013-10-17 17:24:17 -07003065 if (!IS_ERR_OR_NULL(bt_debugfs))
3066 hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
3067
Marcel Holtmannbdc3e0f2013-10-17 17:24:19 -07003068 dev_set_name(&hdev->dev, "%s", hdev->name);
3069
3070 error = device_add(&hdev->dev);
David Herrmann33ca9542011-10-08 14:58:49 +02003071 if (error < 0)
Johan Hedberg54506912014-08-08 09:32:51 +03003072 goto err_wqueue;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003073
Heiner Kallweit6d5d2ee2016-01-08 19:28:58 +01003074 hci_leds_init(hdev);
3075
Marcel Holtmann611b30f2009-06-08 14:41:38 +02003076 hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003077 RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops,
3078 hdev);
Marcel Holtmann611b30f2009-06-08 14:41:38 +02003079 if (hdev->rfkill) {
3080 if (rfkill_register(hdev->rfkill) < 0) {
3081 rfkill_destroy(hdev->rfkill);
3082 hdev->rfkill = NULL;
3083 }
3084 }
3085
Johan Hedberg5e130362013-09-13 08:58:17 +03003086 if (hdev->rfkill && rfkill_blocked(hdev->rfkill))
Marcel Holtmanna1536da2015-03-13 02:11:01 -07003087 hci_dev_set_flag(hdev, HCI_RFKILLED);
Johan Hedberg5e130362013-09-13 08:58:17 +03003088
Marcel Holtmanna1536da2015-03-13 02:11:01 -07003089 hci_dev_set_flag(hdev, HCI_SETUP);
3090 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
Andrei Emeltchenkoce2be9a2012-06-29 15:07:00 +03003091
Marcel Holtmannca8bee52016-07-05 14:30:14 +02003092 if (hdev->dev_type == HCI_PRIMARY) {
Johan Hedberg56f87902013-10-02 13:43:13 +03003093 /* Assume BR/EDR support until proven otherwise (such as
3094 * through reading supported features during init.
3095 */
Marcel Holtmanna1536da2015-03-13 02:11:01 -07003096 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
Johan Hedberg56f87902013-10-02 13:43:13 +03003097 }
Andrei Emeltchenkoce2be9a2012-06-29 15:07:00 +03003098
Gustavo Padovanfcee3372013-07-11 11:34:28 +01003099 write_lock(&hci_dev_list_lock);
3100 list_add(&hdev->list, &hci_dev_list);
3101 write_unlock(&hci_dev_list_lock);
3102
Marcel Holtmann4a964402014-07-02 19:10:33 +02003103 /* Devices that are marked for raw-only usage are unconfigured
3104 * and should not be included in normal operation.
Marcel Holtmannfee746b2014-06-29 12:13:05 +02003105 */
3106 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
Marcel Holtmanna1536da2015-03-13 02:11:01 -07003107 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
Marcel Holtmannfee746b2014-06-29 12:13:05 +02003108
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01003109 hci_sock_dev_event(hdev, HCI_DEV_REG);
David Herrmanndc946bd2012-01-07 15:47:24 +01003110 hci_dev_hold(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003111
Johan Hedberg19202572013-01-14 22:33:51 +02003112 queue_work(hdev->req_workqueue, &hdev->power_on);
Marcel Holtmannfbe96d62012-10-30 01:35:40 -07003113
Linus Torvalds1da177e2005-04-16 15:20:36 -07003114 return id;
Marcel Holtmannf48fd9c2010-03-20 15:20:04 +01003115
David Herrmann33ca9542011-10-08 14:58:49 +02003116err_wqueue:
3117 destroy_workqueue(hdev->workqueue);
Johan Hedberg6ead1bb2013-01-14 22:33:50 +02003118 destroy_workqueue(hdev->req_workqueue);
David Herrmann33ca9542011-10-08 14:58:49 +02003119err:
Sasha Levin3df92b32012-05-27 22:36:56 +02003120 ida_simple_remove(&hci_index_ida, hdev->id);
Marcel Holtmannf48fd9c2010-03-20 15:20:04 +01003121
David Herrmann33ca9542011-10-08 14:58:49 +02003122 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003123}
3124EXPORT_SYMBOL(hci_register_dev);
3125
3126/* Unregister HCI device */
David Herrmann59735632011-10-26 10:43:19 +02003127void hci_unregister_dev(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003128{
Marcel Holtmann2d7cc192015-04-04 21:59:27 -07003129 int id;
Marcel Holtmannef222012007-07-11 06:42:04 +02003130
Marcel Holtmannc13854c2010-02-08 15:27:07 +01003131 BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132
Marcel Holtmanna1536da2015-03-13 02:11:01 -07003133 hci_dev_set_flag(hdev, HCI_UNREGISTER);
Johan Hovold94324962012-03-15 14:48:41 +01003134
Sasha Levin3df92b32012-05-27 22:36:56 +02003135 id = hdev->id;
3136
Gustavo F. Padovanf20d09d2011-12-22 16:30:27 -02003137 write_lock(&hci_dev_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003138 list_del(&hdev->list);
Gustavo F. Padovanf20d09d2011-12-22 16:30:27 -02003139 write_unlock(&hci_dev_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003140
Gustavo Padovanb9b5ef12012-11-21 00:50:21 -02003141 cancel_work_sync(&hdev->power_on);
3142
Jiri Slabybf389cab2016-05-13 10:38:49 +02003143 hci_dev_do_close(hdev);
3144
Johan Hedbergab81cbf2010-12-15 13:53:18 +02003145 if (!test_bit(HCI_INIT, &hdev->flags) &&
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07003146 !hci_dev_test_flag(hdev, HCI_SETUP) &&
3147 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03003148 hci_dev_lock(hdev);
Johan Hedberg744cf192011-11-08 20:40:14 +02003149 mgmt_index_removed(hdev);
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03003150 hci_dev_unlock(hdev);
Johan Hedberg56e5cb82011-11-08 20:40:16 +02003151 }
Johan Hedbergab81cbf2010-12-15 13:53:18 +02003152
Johan Hedberg2e58ef32011-11-08 20:40:15 +02003153 /* mgmt_index_removed should take care of emptying the
3154 * pending list */
3155 BUG_ON(!list_empty(&hdev->mgmt_pending));
3156
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01003157 hci_sock_dev_event(hdev, HCI_DEV_UNREG);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003158
Marcel Holtmann611b30f2009-06-08 14:41:38 +02003159 if (hdev->rfkill) {
3160 rfkill_unregister(hdev->rfkill);
3161 rfkill_destroy(hdev->rfkill);
3162 }
3163
Marcel Holtmannbdc3e0f2013-10-17 17:24:19 -07003164 device_del(&hdev->dev);
Dave Young147e2d52008-03-05 18:45:59 -08003165
Marcel Holtmann0153e2e2013-10-17 17:24:17 -07003166 debugfs_remove_recursive(hdev->debugfs);
Marcel Holtmann5177a832016-07-17 19:55:16 +02003167 kfree_const(hdev->hw_info);
3168 kfree_const(hdev->fw_info);
Marcel Holtmann0153e2e2013-10-17 17:24:17 -07003169
Marcel Holtmannf48fd9c2010-03-20 15:20:04 +01003170 destroy_workqueue(hdev->workqueue);
Johan Hedberg6ead1bb2013-01-14 22:33:50 +02003171 destroy_workqueue(hdev->req_workqueue);
Marcel Holtmannf48fd9c2010-03-20 15:20:04 +01003172
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03003173 hci_dev_lock(hdev);
Johan Hedbergdcc36c12014-07-09 12:59:13 +03003174 hci_bdaddr_list_clear(&hdev->blacklist);
Johan Hedberg66593582014-07-09 12:59:14 +03003175 hci_bdaddr_list_clear(&hdev->whitelist);
Johan Hedberg2aeb9a12011-01-04 12:08:51 +02003176 hci_uuids_clear(hdev);
Johan Hedberg55ed8ca12011-01-17 14:41:05 +02003177 hci_link_keys_clear(hdev);
Vinicius Costa Gomesb899efa2012-02-02 21:08:00 -03003178 hci_smp_ltks_clear(hdev);
Johan Hedberg970c4e42014-02-18 10:19:33 +02003179 hci_smp_irks_clear(hdev);
Szymon Janc2763eda2011-03-22 13:12:22 +01003180 hci_remote_oob_data_clear(hdev);
Florian Grandeld2609b32015-06-18 03:16:34 +02003181 hci_adv_instances_clear(hdev);
Johan Hedbergdcc36c12014-07-09 12:59:13 +03003182 hci_bdaddr_list_clear(&hdev->le_white_list);
Johan Hedberg373110c2014-07-02 17:37:25 +03003183 hci_conn_params_clear_all(hdev);
Marcel Holtmann22078802014-12-05 11:45:22 +01003184 hci_discovery_filter_clear(hdev);
Gustavo F. Padovan09fd0de2011-06-17 13:03:21 -03003185 hci_dev_unlock(hdev);
Johan Hedberge2e0cac2011-01-04 12:08:50 +02003186
David Herrmanndc946bd2012-01-07 15:47:24 +01003187 hci_dev_put(hdev);
Sasha Levin3df92b32012-05-27 22:36:56 +02003188
3189 ida_simple_remove(&hci_index_ida, id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003190}
3191EXPORT_SYMBOL(hci_unregister_dev);
3192
3193/* Suspend HCI device */
3194int hci_suspend_dev(struct hci_dev *hdev)
3195{
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01003196 hci_sock_dev_event(hdev, HCI_DEV_SUSPEND);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003197 return 0;
3198}
3199EXPORT_SYMBOL(hci_suspend_dev);
3200
3201/* Resume HCI device */
3202int hci_resume_dev(struct hci_dev *hdev)
3203{
Marcel Holtmann05fcd4c2015-10-25 23:29:22 +01003204 hci_sock_dev_event(hdev, HCI_DEV_RESUME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003205 return 0;
3206}
3207EXPORT_SYMBOL(hci_resume_dev);
3208
Marcel Holtmann75e05692014-11-02 08:15:38 +01003209/* Reset HCI device */
3210int hci_reset_dev(struct hci_dev *hdev)
3211{
3212 const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 };
3213 struct sk_buff *skb;
3214
3215 skb = bt_skb_alloc(3, GFP_ATOMIC);
3216 if (!skb)
3217 return -ENOMEM;
3218
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003219 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
Marcel Holtmann75e05692014-11-02 08:15:38 +01003220 memcpy(skb_put(skb, 3), hw_err, 3);
3221
3222 /* Send Hardware Error to upper stack */
3223 return hci_recv_frame(hdev, skb);
3224}
3225EXPORT_SYMBOL(hci_reset_dev);
3226
Marcel Holtmann76bca882009-11-18 00:40:39 +01003227/* Receive frame from HCI drivers */
Marcel Holtmanne1a26172013-10-10 16:52:43 -07003228int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb)
Marcel Holtmann76bca882009-11-18 00:40:39 +01003229{
Marcel Holtmann76bca882009-11-18 00:40:39 +01003230 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003231 && !test_bit(HCI_INIT, &hdev->flags))) {
Marcel Holtmann76bca882009-11-18 00:40:39 +01003232 kfree_skb(skb);
3233 return -ENXIO;
3234 }
3235
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003236 if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT &&
3237 hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT &&
3238 hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) {
Marcel Holtmannfe806dc2015-10-08 03:14:28 +02003239 kfree_skb(skb);
3240 return -EINVAL;
3241 }
3242
Jorrit Schippersd82603c2012-12-27 17:33:02 +01003243 /* Incoming skb */
Marcel Holtmann76bca882009-11-18 00:40:39 +01003244 bt_cb(skb)->incoming = 1;
3245
3246 /* Time stamp */
3247 __net_timestamp(skb);
3248
Marcel Holtmann76bca882009-11-18 00:40:39 +01003249 skb_queue_tail(&hdev->rx_q, skb);
Marcel Holtmannb78752c2010-08-08 23:06:53 -04003250 queue_work(hdev->workqueue, &hdev->rx_work);
Marcel Holtmannc78ae282009-11-18 01:02:54 +01003251
Marcel Holtmann76bca882009-11-18 00:40:39 +01003252 return 0;
3253}
3254EXPORT_SYMBOL(hci_recv_frame);
3255
Marcel Holtmanne875ff82015-10-07 16:38:35 +02003256/* Receive diagnostic message from HCI drivers */
3257int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb)
3258{
Marcel Holtmann581d6fd2015-10-09 16:13:51 +02003259 /* Mark as diagnostic packet */
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003260 hci_skb_pkt_type(skb) = HCI_DIAG_PKT;
Marcel Holtmann581d6fd2015-10-09 16:13:51 +02003261
Marcel Holtmanne875ff82015-10-07 16:38:35 +02003262 /* Time stamp */
3263 __net_timestamp(skb);
3264
Marcel Holtmann581d6fd2015-10-09 16:13:51 +02003265 skb_queue_tail(&hdev->rx_q, skb);
3266 queue_work(hdev->workqueue, &hdev->rx_work);
Marcel Holtmanne875ff82015-10-07 16:38:35 +02003267
Marcel Holtmanne875ff82015-10-07 16:38:35 +02003268 return 0;
3269}
3270EXPORT_SYMBOL(hci_recv_diag);
3271
Marcel Holtmann5177a832016-07-17 19:55:16 +02003272void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...)
3273{
3274 va_list vargs;
3275
3276 va_start(vargs, fmt);
3277 kfree_const(hdev->hw_info);
3278 hdev->hw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs);
3279 va_end(vargs);
3280}
3281EXPORT_SYMBOL(hci_set_hw_info);
3282
3283void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...)
3284{
3285 va_list vargs;
3286
3287 va_start(vargs, fmt);
3288 kfree_const(hdev->fw_info);
3289 hdev->fw_info = kvasprintf_const(GFP_KERNEL, fmt, vargs);
3290 va_end(vargs);
3291}
3292EXPORT_SYMBOL(hci_set_fw_info);
3293
Linus Torvalds1da177e2005-04-16 15:20:36 -07003294/* ---- Interface to upper protocols ---- */
3295
Linus Torvalds1da177e2005-04-16 15:20:36 -07003296int hci_register_cb(struct hci_cb *cb)
3297{
3298 BT_DBG("%p name %s", cb, cb->name);
3299
Johan Hedbergfba7ecf2015-02-18 14:53:55 +02003300 mutex_lock(&hci_cb_list_lock);
Johan Hedberg00629e02015-02-18 14:53:54 +02003301 list_add_tail(&cb->list, &hci_cb_list);
Johan Hedbergfba7ecf2015-02-18 14:53:55 +02003302 mutex_unlock(&hci_cb_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003303
3304 return 0;
3305}
3306EXPORT_SYMBOL(hci_register_cb);
3307
3308int hci_unregister_cb(struct hci_cb *cb)
3309{
3310 BT_DBG("%p name %s", cb, cb->name);
3311
Johan Hedbergfba7ecf2015-02-18 14:53:55 +02003312 mutex_lock(&hci_cb_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003313 list_del(&cb->list);
Johan Hedbergfba7ecf2015-02-18 14:53:55 +02003314 mutex_unlock(&hci_cb_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003315
3316 return 0;
3317}
3318EXPORT_SYMBOL(hci_unregister_cb);
3319
Marcel Holtmann51086992013-10-10 14:54:19 -07003320static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003321{
Marcel Holtmanncdc52fa2014-07-06 15:36:15 +02003322 int err;
3323
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003324 BT_DBG("%s type %d len %d", hdev->name, hci_skb_pkt_type(skb),
3325 skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003326
Marcel Holtmanncd82e612012-02-20 20:34:38 +01003327 /* Time stamp */
3328 __net_timestamp(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003329
Marcel Holtmanncd82e612012-02-20 20:34:38 +01003330 /* Send copy to monitor */
3331 hci_send_to_monitor(hdev, skb);
3332
3333 if (atomic_read(&hdev->promisc)) {
3334 /* Send copy to the sockets */
Marcel Holtmann470fe1b2012-02-20 14:50:30 +01003335 hci_send_to_sock(hdev, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003336 }
3337
3338 /* Get rid of skb owner, prior to sending to the driver. */
3339 skb_orphan(skb);
3340
Marcel Holtmann73d0d3c2015-10-04 23:34:01 +02003341 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
3342 kfree_skb(skb);
3343 return;
3344 }
3345
Marcel Holtmanncdc52fa2014-07-06 15:36:15 +02003346 err = hdev->send(hdev, skb);
3347 if (err < 0) {
3348 BT_ERR("%s sending frame failed (%d)", hdev->name, err);
3349 kfree_skb(skb);
3350 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003351}
3352
Johan Hedberg1ca3a9d2013-03-05 20:37:45 +02003353/* Send HCI command */
Johan Hedberg07dc93d2013-04-19 10:14:51 +03003354int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
3355 const void *param)
Johan Hedberg1ca3a9d2013-03-05 20:37:45 +02003356{
3357 struct sk_buff *skb;
3358
3359 BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen);
3360
3361 skb = hci_prepare_cmd(hdev, opcode, plen, param);
3362 if (!skb) {
3363 BT_ERR("%s no memory for command", hdev->name);
3364 return -ENOMEM;
3365 }
3366
Stephen Hemminger49c922b2014-10-27 21:12:20 -07003367 /* Stand-alone HCI commands must be flagged as
Johan Hedberg11714b32013-03-05 20:37:47 +02003368 * single-command requests.
3369 */
Johan Hedberg44d27132015-11-05 09:31:40 +02003370 bt_cb(skb)->hci.req_flags |= HCI_REQ_START;
Johan Hedberg11714b32013-03-05 20:37:47 +02003371
Linus Torvalds1da177e2005-04-16 15:20:36 -07003372 skb_queue_tail(&hdev->cmd_q, skb);
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02003373 queue_work(hdev->workqueue, &hdev->cmd_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003374
3375 return 0;
3376}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003377
3378/* Get data from the previously sent command */
Marcel Holtmanna9de9242007-10-20 13:33:56 +02003379void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003380{
3381 struct hci_command_hdr *hdr;
3382
3383 if (!hdev->sent_cmd)
3384 return NULL;
3385
3386 hdr = (void *) hdev->sent_cmd->data;
3387
Marcel Holtmanna9de9242007-10-20 13:33:56 +02003388 if (hdr->opcode != cpu_to_le16(opcode))
Linus Torvalds1da177e2005-04-16 15:20:36 -07003389 return NULL;
3390
Andrei Emeltchenkof0e09512012-06-11 11:13:09 +03003391 BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003392
3393 return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE;
3394}
3395
Loic Poulainfbef1682015-09-29 15:05:44 +02003396/* Send HCI command and wait for command commplete event */
3397struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
3398 const void *param, u32 timeout)
3399{
3400 struct sk_buff *skb;
3401
3402 if (!test_bit(HCI_UP, &hdev->flags))
3403 return ERR_PTR(-ENETDOWN);
3404
3405 bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen);
3406
Johan Hedbergb5044302015-11-10 09:44:55 +02003407 hci_req_sync_lock(hdev);
Loic Poulainfbef1682015-09-29 15:05:44 +02003408 skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout);
Johan Hedbergb5044302015-11-10 09:44:55 +02003409 hci_req_sync_unlock(hdev);
Loic Poulainfbef1682015-09-29 15:05:44 +02003410
3411 return skb;
3412}
3413EXPORT_SYMBOL(hci_cmd_sync);
3414
Linus Torvalds1da177e2005-04-16 15:20:36 -07003415/* Send ACL data */
3416static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
3417{
3418 struct hci_acl_hdr *hdr;
3419 int len = skb->len;
3420
Arnaldo Carvalho de Melobadff6d2007-03-13 13:06:52 -03003421 skb_push(skb, HCI_ACL_HDR_SIZE);
3422 skb_reset_transport_header(skb);
Arnaldo Carvalho de Melo9c702202007-04-25 18:04:18 -07003423 hdr = (struct hci_acl_hdr *)skb_transport_header(skb);
YOSHIFUJI Hideakiaca31922007-03-25 20:12:50 -07003424 hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
3425 hdr->dlen = cpu_to_le16(len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003426}
3427
Andrei Emeltchenkoee22be72012-09-21 12:30:04 +03003428static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003429 struct sk_buff *skb, __u16 flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003430{
Andrei Emeltchenkoee22be72012-09-21 12:30:04 +03003431 struct hci_conn *conn = chan->conn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003432 struct hci_dev *hdev = conn->hdev;
3433 struct sk_buff *list;
3434
Gustavo Padovan087bfd92012-05-11 13:16:11 -03003435 skb->len = skb_headlen(skb);
3436 skb->data_len = 0;
3437
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003438 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
Andrei Emeltchenko204a6e52012-10-15 11:58:39 +03003439
3440 switch (hdev->dev_type) {
Marcel Holtmannca8bee52016-07-05 14:30:14 +02003441 case HCI_PRIMARY:
Andrei Emeltchenko204a6e52012-10-15 11:58:39 +03003442 hci_add_acl_hdr(skb, conn->handle, flags);
3443 break;
3444 case HCI_AMP:
3445 hci_add_acl_hdr(skb, chan->handle, flags);
3446 break;
3447 default:
3448 BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
3449 return;
3450 }
Gustavo Padovan087bfd92012-05-11 13:16:11 -03003451
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02003452 list = skb_shinfo(skb)->frag_list;
3453 if (!list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003454 /* Non fragmented */
3455 BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
3456
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003457 skb_queue_tail(queue, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003458 } else {
3459 /* Fragmented */
3460 BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
3461
3462 skb_shinfo(skb)->frag_list = NULL;
3463
Jukka Rissanen9cfd5a22014-10-29 10:16:00 +02003464 /* Queue all fragments atomically. We need to use spin_lock_bh
3465 * here because of 6LoWPAN links, as there this function is
3466 * called from softirq and using normal spin lock could cause
3467 * deadlocks.
3468 */
3469 spin_lock_bh(&queue->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003470
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003471 __skb_queue_tail(queue, skb);
Andrei Emeltchenkoe7021122011-01-03 11:14:36 +02003472
3473 flags &= ~ACL_START;
3474 flags |= ACL_CONT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003475 do {
3476 skb = list; list = list->next;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09003477
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003478 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
Andrei Emeltchenkoe7021122011-01-03 11:14:36 +02003479 hci_add_acl_hdr(skb, conn->handle, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003480
3481 BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
3482
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003483 __skb_queue_tail(queue, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003484 } while (list);
3485
Jukka Rissanen9cfd5a22014-10-29 10:16:00 +02003486 spin_unlock_bh(&queue->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003487 }
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003488}
3489
3490void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags)
3491{
Andrei Emeltchenkoee22be72012-09-21 12:30:04 +03003492 struct hci_dev *hdev = chan->conn->hdev;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003493
Andrei Emeltchenkof0e09512012-06-11 11:13:09 +03003494 BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags);
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003495
Andrei Emeltchenkoee22be72012-09-21 12:30:04 +03003496 hci_queue_acl(chan, &chan->data_q, skb, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003497
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02003498 queue_work(hdev->workqueue, &hdev->tx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003499}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003500
3501/* Send SCO data */
Gustavo F. Padovan0d861d82010-05-01 16:15:35 -03003502void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003503{
3504 struct hci_dev *hdev = conn->hdev;
3505 struct hci_sco_hdr hdr;
3506
3507 BT_DBG("%s len %d", hdev->name, skb->len);
3508
YOSHIFUJI Hideakiaca31922007-03-25 20:12:50 -07003509 hdr.handle = cpu_to_le16(conn->handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003510 hdr.dlen = skb->len;
3511
Arnaldo Carvalho de Melobadff6d2007-03-13 13:06:52 -03003512 skb_push(skb, HCI_SCO_HDR_SIZE);
3513 skb_reset_transport_header(skb);
Arnaldo Carvalho de Melo9c702202007-04-25 18:04:18 -07003514 memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003515
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01003516 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
Marcel Holtmannc78ae282009-11-18 01:02:54 +01003517
Linus Torvalds1da177e2005-04-16 15:20:36 -07003518 skb_queue_tail(&conn->data_q, skb);
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02003519 queue_work(hdev->workqueue, &hdev->tx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003520}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003521
3522/* ---- HCI TX task (outgoing data) ---- */
3523
3524/* HCI Connection scheduler */
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003525static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type,
3526 int *quote)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003527{
3528 struct hci_conn_hash *h = &hdev->conn_hash;
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02003529 struct hci_conn *conn = NULL, *c;
Mikel Astizabc5de82012-04-11 08:48:47 +02003530 unsigned int num = 0, min = ~0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003531
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09003532 /* We don't have to lock device here. Connections are always
Linus Torvalds1da177e2005-04-16 15:20:36 -07003533 * added and removed with TX task disabled. */
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003534
3535 rcu_read_lock();
3536
3537 list_for_each_entry_rcu(c, &h->list, list) {
Marcel Holtmann769be972008-07-14 20:13:49 +02003538 if (c->type != type || skb_queue_empty(&c->data_q))
Linus Torvalds1da177e2005-04-16 15:20:36 -07003539 continue;
Marcel Holtmann769be972008-07-14 20:13:49 +02003540
3541 if (c->state != BT_CONNECTED && c->state != BT_CONFIG)
3542 continue;
3543
Linus Torvalds1da177e2005-04-16 15:20:36 -07003544 num++;
3545
3546 if (c->sent < min) {
3547 min = c->sent;
3548 conn = c;
3549 }
Luiz Augusto von Dentz52087a72011-08-17 16:23:00 +03003550
3551 if (hci_conn_num(hdev, type) == num)
3552 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003553 }
3554
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003555 rcu_read_unlock();
3556
Linus Torvalds1da177e2005-04-16 15:20:36 -07003557 if (conn) {
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003558 int cnt, q;
3559
3560 switch (conn->type) {
3561 case ACL_LINK:
3562 cnt = hdev->acl_cnt;
3563 break;
3564 case SCO_LINK:
3565 case ESCO_LINK:
3566 cnt = hdev->sco_cnt;
3567 break;
3568 case LE_LINK:
3569 cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
3570 break;
3571 default:
3572 cnt = 0;
3573 BT_ERR("Unknown link type");
3574 }
3575
3576 q = cnt / num;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003577 *quote = q ? q : 1;
3578 } else
3579 *quote = 0;
3580
3581 BT_DBG("conn %p quote %d", conn, *quote);
3582 return conn;
3583}
3584
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003585static void hci_link_tx_to(struct hci_dev *hdev, __u8 type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003586{
3587 struct hci_conn_hash *h = &hdev->conn_hash;
Luiz Augusto von Dentz8035ded2011-11-01 10:58:56 +02003588 struct hci_conn *c;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003589
Ville Tervobae1f5d92011-02-10 22:38:53 -03003590 BT_ERR("%s link tx timeout", hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003591
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003592 rcu_read_lock();
3593
Linus Torvalds1da177e2005-04-16 15:20:36 -07003594 /* Kill stalled connections */
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003595 list_for_each_entry_rcu(c, &h->list, list) {
Ville Tervobae1f5d92011-02-10 22:38:53 -03003596 if (c->type == type && c->sent) {
Andrei Emeltchenko6ed93dc2012-09-25 12:49:43 +03003597 BT_ERR("%s killing stalled connection %pMR",
3598 hdev->name, &c->dst);
Andre Guedesbed71742013-01-30 11:50:56 -03003599 hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003600 }
3601 }
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003602
3603 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003604}
3605
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003606static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
3607 int *quote)
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003608{
3609 struct hci_conn_hash *h = &hdev->conn_hash;
3610 struct hci_chan *chan = NULL;
Mikel Astizabc5de82012-04-11 08:48:47 +02003611 unsigned int num = 0, min = ~0, cur_prio = 0;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003612 struct hci_conn *conn;
3613 int cnt, q, conn_num = 0;
3614
3615 BT_DBG("%s", hdev->name);
3616
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003617 rcu_read_lock();
3618
3619 list_for_each_entry_rcu(conn, &h->list, list) {
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003620 struct hci_chan *tmp;
3621
3622 if (conn->type != type)
3623 continue;
3624
3625 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
3626 continue;
3627
3628 conn_num++;
3629
Gustavo F. Padovan8192ede2011-12-14 15:08:48 -02003630 list_for_each_entry_rcu(tmp, &conn->chan_list, list) {
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003631 struct sk_buff *skb;
3632
3633 if (skb_queue_empty(&tmp->data_q))
3634 continue;
3635
3636 skb = skb_peek(&tmp->data_q);
3637 if (skb->priority < cur_prio)
3638 continue;
3639
3640 if (skb->priority > cur_prio) {
3641 num = 0;
3642 min = ~0;
3643 cur_prio = skb->priority;
3644 }
3645
3646 num++;
3647
3648 if (conn->sent < min) {
3649 min = conn->sent;
3650 chan = tmp;
3651 }
3652 }
3653
3654 if (hci_conn_num(hdev, type) == conn_num)
3655 break;
3656 }
3657
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003658 rcu_read_unlock();
3659
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003660 if (!chan)
3661 return NULL;
3662
3663 switch (chan->conn->type) {
3664 case ACL_LINK:
3665 cnt = hdev->acl_cnt;
3666 break;
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003667 case AMP_LINK:
3668 cnt = hdev->block_cnt;
3669 break;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003670 case SCO_LINK:
3671 case ESCO_LINK:
3672 cnt = hdev->sco_cnt;
3673 break;
3674 case LE_LINK:
3675 cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
3676 break;
3677 default:
3678 cnt = 0;
3679 BT_ERR("Unknown link type");
3680 }
3681
3682 q = cnt / num;
3683 *quote = q ? q : 1;
3684 BT_DBG("chan %p quote %d", chan, *quote);
3685 return chan;
3686}
3687
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003688static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type)
3689{
3690 struct hci_conn_hash *h = &hdev->conn_hash;
3691 struct hci_conn *conn;
3692 int num = 0;
3693
3694 BT_DBG("%s", hdev->name);
3695
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003696 rcu_read_lock();
3697
3698 list_for_each_entry_rcu(conn, &h->list, list) {
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003699 struct hci_chan *chan;
3700
3701 if (conn->type != type)
3702 continue;
3703
3704 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
3705 continue;
3706
3707 num++;
3708
Gustavo F. Padovan8192ede2011-12-14 15:08:48 -02003709 list_for_each_entry_rcu(chan, &conn->chan_list, list) {
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003710 struct sk_buff *skb;
3711
3712 if (chan->sent) {
3713 chan->sent = 0;
3714 continue;
3715 }
3716
3717 if (skb_queue_empty(&chan->data_q))
3718 continue;
3719
3720 skb = skb_peek(&chan->data_q);
3721 if (skb->priority >= HCI_PRIO_MAX - 1)
3722 continue;
3723
3724 skb->priority = HCI_PRIO_MAX - 1;
3725
3726 BT_DBG("chan %p skb %p promoted to %d", chan, skb,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003727 skb->priority);
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003728 }
3729
3730 if (hci_conn_num(hdev, type) == num)
3731 break;
3732 }
Gustavo F. Padovanbf4c6322011-12-14 22:54:12 -02003733
3734 rcu_read_unlock();
3735
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003736}
3737
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003738static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb)
3739{
3740 /* Calculate count of blocks used by this packet */
3741 return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len);
3742}
3743
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003744static void __check_timeout(struct hci_dev *hdev, unsigned int cnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003745{
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07003746 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003747 /* ACL tx timeout must be longer than maximum
3748 * link supervision timeout (40.9 seconds) */
Andrei Emeltchenko63d2bc12012-02-03 16:27:55 +02003749 if (!cnt && time_after(jiffies, hdev->acl_last_tx +
Andrei Emeltchenko5f246e82012-06-11 11:13:07 +03003750 HCI_ACL_TX_TIMEOUT))
Ville Tervobae1f5d92011-02-10 22:38:53 -03003751 hci_link_tx_to(hdev, ACL_LINK);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003752 }
Andrei Emeltchenko63d2bc12012-02-03 16:27:55 +02003753}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003754
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003755static void hci_sched_acl_pkt(struct hci_dev *hdev)
Andrei Emeltchenko63d2bc12012-02-03 16:27:55 +02003756{
3757 unsigned int cnt = hdev->acl_cnt;
3758 struct hci_chan *chan;
3759 struct sk_buff *skb;
3760 int quote;
3761
3762 __check_timeout(hdev, cnt);
Marcel Holtmann04837f62006-07-03 10:02:33 +02003763
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003764 while (hdev->acl_cnt &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003765 (chan = hci_chan_sent(hdev, ACL_LINK, &quote))) {
Luiz Augusto von Dentzec1cce22011-11-02 15:52:02 +02003766 u32 priority = (skb_peek(&chan->data_q))->priority;
3767 while (quote-- && (skb = skb_peek(&chan->data_q))) {
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003768 BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003769 skb->len, skb->priority);
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003770
Luiz Augusto von Dentzec1cce22011-11-02 15:52:02 +02003771 /* Stop if priority has changed */
3772 if (skb->priority < priority)
3773 break;
3774
3775 skb = skb_dequeue(&chan->data_q);
3776
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003777 hci_conn_enter_active_mode(chan->conn,
Gustavo F. Padovan04124682012-03-08 01:25:00 -03003778 bt_cb(skb)->force_active);
Marcel Holtmann04837f62006-07-03 10:02:33 +02003779
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003780 hci_send_frame(hdev, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003781 hdev->acl_last_tx = jiffies;
3782
3783 hdev->acl_cnt--;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003784 chan->sent++;
3785 chan->conn->sent++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003786 }
3787 }
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003788
3789 if (cnt != hdev->acl_cnt)
3790 hci_prio_recalculate(hdev, ACL_LINK);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003791}
3792
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003793static void hci_sched_acl_blk(struct hci_dev *hdev)
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003794{
Andrei Emeltchenko63d2bc12012-02-03 16:27:55 +02003795 unsigned int cnt = hdev->block_cnt;
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003796 struct hci_chan *chan;
3797 struct sk_buff *skb;
3798 int quote;
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003799 u8 type;
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003800
Andrei Emeltchenko63d2bc12012-02-03 16:27:55 +02003801 __check_timeout(hdev, cnt);
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003802
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003803 BT_DBG("%s", hdev->name);
3804
3805 if (hdev->dev_type == HCI_AMP)
3806 type = AMP_LINK;
3807 else
3808 type = ACL_LINK;
3809
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003810 while (hdev->block_cnt > 0 &&
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003811 (chan = hci_chan_sent(hdev, type, &quote))) {
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003812 u32 priority = (skb_peek(&chan->data_q))->priority;
3813 while (quote > 0 && (skb = skb_peek(&chan->data_q))) {
3814 int blocks;
3815
3816 BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003817 skb->len, skb->priority);
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003818
3819 /* Stop if priority has changed */
3820 if (skb->priority < priority)
3821 break;
3822
3823 skb = skb_dequeue(&chan->data_q);
3824
3825 blocks = __get_blocks(hdev, skb);
3826 if (blocks > hdev->block_cnt)
3827 return;
3828
3829 hci_conn_enter_active_mode(chan->conn,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003830 bt_cb(skb)->force_active);
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003831
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003832 hci_send_frame(hdev, skb);
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003833 hdev->acl_last_tx = jiffies;
3834
3835 hdev->block_cnt -= blocks;
3836 quote -= blocks;
3837
3838 chan->sent += blocks;
3839 chan->conn->sent += blocks;
3840 }
3841 }
3842
3843 if (cnt != hdev->block_cnt)
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003844 hci_prio_recalculate(hdev, type);
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003845}
3846
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003847static void hci_sched_acl(struct hci_dev *hdev)
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003848{
3849 BT_DBG("%s", hdev->name);
3850
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003851 /* No ACL link over BR/EDR controller */
Marcel Holtmannca8bee52016-07-05 14:30:14 +02003852 if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_PRIMARY)
Andrei Emeltchenkobd1eb662012-10-10 17:38:30 +03003853 return;
3854
3855 /* No AMP link over AMP controller */
3856 if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP)
Andrei Emeltchenkob71d3852012-02-03 16:27:54 +02003857 return;
3858
3859 switch (hdev->flow_ctl_mode) {
3860 case HCI_FLOW_CTL_MODE_PACKET_BASED:
3861 hci_sched_acl_pkt(hdev);
3862 break;
3863
3864 case HCI_FLOW_CTL_MODE_BLOCK_BASED:
3865 hci_sched_acl_blk(hdev);
3866 break;
3867 }
3868}
3869
Linus Torvalds1da177e2005-04-16 15:20:36 -07003870/* Schedule SCO */
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003871static void hci_sched_sco(struct hci_dev *hdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003872{
3873 struct hci_conn *conn;
3874 struct sk_buff *skb;
3875 int quote;
3876
3877 BT_DBG("%s", hdev->name);
3878
Luiz Augusto von Dentz52087a72011-08-17 16:23:00 +03003879 if (!hci_conn_num(hdev, SCO_LINK))
3880 return;
3881
Linus Torvalds1da177e2005-04-16 15:20:36 -07003882 while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, &quote))) {
3883 while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
3884 BT_DBG("skb %p len %d", skb, skb->len);
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003885 hci_send_frame(hdev, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003886
3887 conn->sent++;
3888 if (conn->sent == ~0)
3889 conn->sent = 0;
3890 }
3891 }
3892}
3893
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003894static void hci_sched_esco(struct hci_dev *hdev)
Marcel Holtmannb6a0dc82007-10-20 14:55:10 +02003895{
3896 struct hci_conn *conn;
3897 struct sk_buff *skb;
3898 int quote;
3899
3900 BT_DBG("%s", hdev->name);
3901
Luiz Augusto von Dentz52087a72011-08-17 16:23:00 +03003902 if (!hci_conn_num(hdev, ESCO_LINK))
3903 return;
3904
Gustavo Padovan8fc9ced2012-05-23 04:04:21 -03003905 while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK,
3906 &quote))) {
Marcel Holtmannb6a0dc82007-10-20 14:55:10 +02003907 while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
3908 BT_DBG("skb %p len %d", skb, skb->len);
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003909 hci_send_frame(hdev, skb);
Marcel Holtmannb6a0dc82007-10-20 14:55:10 +02003910
3911 conn->sent++;
3912 if (conn->sent == ~0)
3913 conn->sent = 0;
3914 }
3915 }
3916}
3917
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003918static void hci_sched_le(struct hci_dev *hdev)
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003919{
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003920 struct hci_chan *chan;
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003921 struct sk_buff *skb;
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003922 int quote, cnt, tmp;
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003923
3924 BT_DBG("%s", hdev->name);
3925
Luiz Augusto von Dentz52087a72011-08-17 16:23:00 +03003926 if (!hci_conn_num(hdev, LE_LINK))
3927 return;
3928
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07003929 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003930 /* LE tx timeout must be longer than maximum
3931 * link supervision timeout (40.9 seconds) */
Ville Tervobae1f5d92011-02-10 22:38:53 -03003932 if (!hdev->le_cnt && hdev->le_pkts &&
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003933 time_after(jiffies, hdev->le_last_tx + HZ * 45))
Ville Tervobae1f5d92011-02-10 22:38:53 -03003934 hci_link_tx_to(hdev, LE_LINK);
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003935 }
3936
3937 cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt;
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003938 tmp = cnt;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003939 while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, &quote))) {
Luiz Augusto von Dentzec1cce22011-11-02 15:52:02 +02003940 u32 priority = (skb_peek(&chan->data_q))->priority;
3941 while (quote-- && (skb = skb_peek(&chan->data_q))) {
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003942 BT_DBG("chan %p skb %p len %d priority %u", chan, skb,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003943 skb->len, skb->priority);
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003944
Luiz Augusto von Dentzec1cce22011-11-02 15:52:02 +02003945 /* Stop if priority has changed */
3946 if (skb->priority < priority)
3947 break;
3948
3949 skb = skb_dequeue(&chan->data_q);
3950
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003951 hci_send_frame(hdev, skb);
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003952 hdev->le_last_tx = jiffies;
3953
3954 cnt--;
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003955 chan->sent++;
3956 chan->conn->sent++;
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003957 }
3958 }
Luiz Augusto von Dentz73d80de2011-11-02 15:52:01 +02003959
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003960 if (hdev->le_pkts)
3961 hdev->le_cnt = cnt;
3962 else
3963 hdev->acl_cnt = cnt;
Luiz Augusto von Dentz02b20f02011-11-02 15:52:03 +02003964
3965 if (cnt != tmp)
3966 hci_prio_recalculate(hdev, LE_LINK);
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003967}
3968
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02003969static void hci_tx_work(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003970{
Gustavo F. Padovan3eff45e2011-12-15 00:50:02 -02003971 struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003972 struct sk_buff *skb;
3973
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003974 BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03003975 hdev->sco_cnt, hdev->le_cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003976
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07003977 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Marcel Holtmann52de5992013-09-03 18:08:38 -07003978 /* Schedule queues and send stuff to HCI driver */
3979 hci_sched_acl(hdev);
3980 hci_sched_sco(hdev);
3981 hci_sched_esco(hdev);
3982 hci_sched_le(hdev);
3983 }
Ville Tervo6ed58ec2011-02-10 22:38:48 -03003984
Linus Torvalds1da177e2005-04-16 15:20:36 -07003985 /* Send next queued raw (unknown type) packet */
3986 while ((skb = skb_dequeue(&hdev->raw_q)))
Marcel Holtmann57d17d72013-10-10 14:54:17 -07003987 hci_send_frame(hdev, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003988}
3989
Lucas De Marchi25985ed2011-03-30 22:57:33 -03003990/* ----- HCI RX task (incoming data processing) ----- */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003991
3992/* ACL data packet */
Gustavo Padovan6039aa72012-05-23 04:04:18 -03003993static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003994{
3995 struct hci_acl_hdr *hdr = (void *) skb->data;
3996 struct hci_conn *conn;
3997 __u16 handle, flags;
3998
3999 skb_pull(skb, HCI_ACL_HDR_SIZE);
4000
4001 handle = __le16_to_cpu(hdr->handle);
4002 flags = hci_flags(handle);
4003 handle = hci_handle(handle);
4004
Andrei Emeltchenkof0e09512012-06-11 11:13:09 +03004005 BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len,
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03004006 handle, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004007
4008 hdev->stat.acl_rx++;
4009
4010 hci_dev_lock(hdev);
4011 conn = hci_conn_hash_lookup_handle(hdev, handle);
4012 hci_dev_unlock(hdev);
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09004013
Linus Torvalds1da177e2005-04-16 15:20:36 -07004014 if (conn) {
Mat Martineau65983fc2011-12-13 15:06:02 -08004015 hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF);
Marcel Holtmann04837f62006-07-03 10:02:33 +02004016
Linus Torvalds1da177e2005-04-16 15:20:36 -07004017 /* Send to upper protocol */
Ulisses Furquim686ebf22011-12-21 10:11:33 -02004018 l2cap_recv_acldata(conn, skb, flags);
4019 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004020 } else {
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09004021 BT_ERR("%s ACL packet for unknown connection handle %d",
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03004022 hdev->name, handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004023 }
4024
4025 kfree_skb(skb);
4026}
4027
4028/* SCO data packet */
Gustavo Padovan6039aa72012-05-23 04:04:18 -03004029static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004030{
4031 struct hci_sco_hdr *hdr = (void *) skb->data;
4032 struct hci_conn *conn;
4033 __u16 handle;
4034
4035 skb_pull(skb, HCI_SCO_HDR_SIZE);
4036
4037 handle = __le16_to_cpu(hdr->handle);
4038
Andrei Emeltchenkof0e09512012-06-11 11:13:09 +03004039 BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004040
4041 hdev->stat.sco_rx++;
4042
4043 hci_dev_lock(hdev);
4044 conn = hci_conn_hash_lookup_handle(hdev, handle);
4045 hci_dev_unlock(hdev);
4046
4047 if (conn) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004048 /* Send to upper protocol */
Ulisses Furquim686ebf22011-12-21 10:11:33 -02004049 sco_recv_scodata(conn, skb);
4050 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004051 } else {
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09004052 BT_ERR("%s SCO packet for unknown connection handle %d",
Gustavo Padovana8c5fb12012-05-17 00:36:26 -03004053 hdev->name, handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004054 }
4055
4056 kfree_skb(skb);
4057}
4058
Johan Hedberg9238f362013-03-05 20:37:48 +02004059static bool hci_req_is_complete(struct hci_dev *hdev)
4060{
4061 struct sk_buff *skb;
4062
4063 skb = skb_peek(&hdev->cmd_q);
4064 if (!skb)
4065 return true;
4066
Johan Hedberg44d27132015-11-05 09:31:40 +02004067 return (bt_cb(skb)->hci.req_flags & HCI_REQ_START);
Johan Hedberg9238f362013-03-05 20:37:48 +02004068}
4069
Johan Hedberg42c6b122013-03-05 20:37:49 +02004070static void hci_resend_last(struct hci_dev *hdev)
4071{
4072 struct hci_command_hdr *sent;
4073 struct sk_buff *skb;
4074 u16 opcode;
4075
4076 if (!hdev->sent_cmd)
4077 return;
4078
4079 sent = (void *) hdev->sent_cmd->data;
4080 opcode = __le16_to_cpu(sent->opcode);
4081 if (opcode == HCI_OP_RESET)
4082 return;
4083
4084 skb = skb_clone(hdev->sent_cmd, GFP_KERNEL);
4085 if (!skb)
4086 return;
4087
4088 skb_queue_head(&hdev->cmd_q, skb);
4089 queue_work(hdev->workqueue, &hdev->cmd_work);
4090}
4091
Johan Hedberge62144872015-04-02 13:41:08 +03004092void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status,
4093 hci_req_complete_t *req_complete,
4094 hci_req_complete_skb_t *req_complete_skb)
Johan Hedberg9238f362013-03-05 20:37:48 +02004095{
Johan Hedberg9238f362013-03-05 20:37:48 +02004096 struct sk_buff *skb;
4097 unsigned long flags;
4098
4099 BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
4100
Johan Hedberg42c6b122013-03-05 20:37:49 +02004101 /* If the completed command doesn't match the last one that was
4102 * sent we need to do special handling of it.
Johan Hedberg9238f362013-03-05 20:37:48 +02004103 */
Johan Hedberg42c6b122013-03-05 20:37:49 +02004104 if (!hci_sent_cmd_data(hdev, opcode)) {
4105 /* Some CSR based controllers generate a spontaneous
4106 * reset complete event during init and any pending
4107 * command will never be completed. In such a case we
4108 * need to resend whatever was the last sent
4109 * command.
4110 */
4111 if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET)
4112 hci_resend_last(hdev);
4113
Johan Hedberg9238f362013-03-05 20:37:48 +02004114 return;
Johan Hedberg42c6b122013-03-05 20:37:49 +02004115 }
Johan Hedberg9238f362013-03-05 20:37:48 +02004116
4117 /* If the command succeeded and there's still more commands in
4118 * this request the request is not yet complete.
4119 */
4120 if (!status && !hci_req_is_complete(hdev))
4121 return;
4122
4123 /* If this was the last command in a request the complete
4124 * callback would be found in hdev->sent_cmd instead of the
4125 * command queue (hdev->cmd_q).
4126 */
Johan Hedberg44d27132015-11-05 09:31:40 +02004127 if (bt_cb(hdev->sent_cmd)->hci.req_flags & HCI_REQ_SKB) {
4128 *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb;
Johan Hedberge62144872015-04-02 13:41:08 +03004129 return;
4130 }
Johan Hedberg53e21fb2013-07-27 14:11:14 -05004131
Johan Hedberg44d27132015-11-05 09:31:40 +02004132 if (bt_cb(hdev->sent_cmd)->hci.req_complete) {
4133 *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete;
Johan Hedberge62144872015-04-02 13:41:08 +03004134 return;
Johan Hedberg9238f362013-03-05 20:37:48 +02004135 }
4136
4137 /* Remove all pending commands belonging to this request */
4138 spin_lock_irqsave(&hdev->cmd_q.lock, flags);
4139 while ((skb = __skb_dequeue(&hdev->cmd_q))) {
Johan Hedberg44d27132015-11-05 09:31:40 +02004140 if (bt_cb(skb)->hci.req_flags & HCI_REQ_START) {
Johan Hedberg9238f362013-03-05 20:37:48 +02004141 __skb_queue_head(&hdev->cmd_q, skb);
4142 break;
4143 }
4144
Douglas Anderson3bd75942016-02-19 14:25:21 -08004145 if (bt_cb(skb)->hci.req_flags & HCI_REQ_SKB)
4146 *req_complete_skb = bt_cb(skb)->hci.req_complete_skb;
4147 else
4148 *req_complete = bt_cb(skb)->hci.req_complete;
Johan Hedberg9238f362013-03-05 20:37:48 +02004149 kfree_skb(skb);
4150 }
4151 spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
Johan Hedberg9238f362013-03-05 20:37:48 +02004152}
4153
Marcel Holtmannb78752c2010-08-08 23:06:53 -04004154static void hci_rx_work(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004155{
Marcel Holtmannb78752c2010-08-08 23:06:53 -04004156 struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004157 struct sk_buff *skb;
4158
4159 BT_DBG("%s", hdev->name);
4160
Linus Torvalds1da177e2005-04-16 15:20:36 -07004161 while ((skb = skb_dequeue(&hdev->rx_q))) {
Marcel Holtmanncd82e612012-02-20 20:34:38 +01004162 /* Send copy to monitor */
4163 hci_send_to_monitor(hdev, skb);
4164
Linus Torvalds1da177e2005-04-16 15:20:36 -07004165 if (atomic_read(&hdev->promisc)) {
4166 /* Send copy to the sockets */
Marcel Holtmann470fe1b2012-02-20 14:50:30 +01004167 hci_send_to_sock(hdev, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004168 }
4169
Marcel Holtmannd7a5a112015-03-13 02:11:00 -07004170 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004171 kfree_skb(skb);
4172 continue;
4173 }
4174
4175 if (test_bit(HCI_INIT, &hdev->flags)) {
4176 /* Don't process data packets in this states. */
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01004177 switch (hci_skb_pkt_type(skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004178 case HCI_ACLDATA_PKT:
4179 case HCI_SCODATA_PKT:
4180 kfree_skb(skb);
4181 continue;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -07004182 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004183 }
4184
4185 /* Process frame */
Marcel Holtmannd79f34e2015-11-05 07:10:00 +01004186 switch (hci_skb_pkt_type(skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004187 case HCI_EVENT_PKT:
Marcel Holtmannb78752c2010-08-08 23:06:53 -04004188 BT_DBG("%s Event packet", hdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004189 hci_event_packet(hdev, skb);
4190 break;
4191
4192 case HCI_ACLDATA_PKT:
4193 BT_DBG("%s ACL data packet", hdev->name);
4194 hci_acldata_packet(hdev, skb);
4195 break;
4196
4197 case HCI_SCODATA_PKT:
4198 BT_DBG("%s SCO data packet", hdev->name);
4199 hci_scodata_packet(hdev, skb);
4200 break;
4201
4202 default:
4203 kfree_skb(skb);
4204 break;
4205 }
4206 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004207}
4208
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02004209static void hci_cmd_work(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004210{
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02004211 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004212 struct sk_buff *skb;
4213
Andrei Emeltchenko21047862012-07-10 15:27:47 +03004214 BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name,
4215 atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q));
Linus Torvalds1da177e2005-04-16 15:20:36 -07004216
Linus Torvalds1da177e2005-04-16 15:20:36 -07004217 /* Send queued commands */
Andrei Emeltchenko5a08ecc2011-01-11 17:20:20 +02004218 if (atomic_read(&hdev->cmd_cnt)) {
4219 skb = skb_dequeue(&hdev->cmd_q);
4220 if (!skb)
4221 return;
4222
Wei Yongjun7585b972009-02-25 18:29:52 +08004223 kfree_skb(hdev->sent_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004224
Marcel Holtmanna675d7f2013-09-03 18:11:07 -07004225 hdev->sent_cmd = skb_clone(skb, GFP_KERNEL);
Andrei Emeltchenko70f230202010-12-01 16:58:25 +02004226 if (hdev->sent_cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004227 atomic_dec(&hdev->cmd_cnt);
Marcel Holtmann57d17d72013-10-10 14:54:17 -07004228 hci_send_frame(hdev, skb);
Szymon Janc7bdb8a52011-07-26 22:46:54 +02004229 if (test_bit(HCI_RESET, &hdev->flags))
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02004230 cancel_delayed_work(&hdev->cmd_timer);
Szymon Janc7bdb8a52011-07-26 22:46:54 +02004231 else
Marcel Holtmann65cc2b42014-06-16 12:30:56 +02004232 schedule_delayed_work(&hdev->cmd_timer,
4233 HCI_CMD_TIMEOUT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004234 } else {
4235 skb_queue_head(&hdev->cmd_q, skb);
Gustavo F. Padovanc347b762011-12-14 23:53:47 -02004236 queue_work(hdev->workqueue, &hdev->cmd_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004237 }
4238 }
4239}