YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
Gustavo F. Padovan | 590051d | 2011-12-18 13:39:33 -0200 | [diff] [blame] | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | |
| 6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License version 2 as |
| 10 | published by the Free Software Foundation; |
| 11 | |
| 12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 20 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | SOFTWARE IS DISCLAIMED. |
| 24 | */ |
| 25 | |
| 26 | /* Bluetooth HCI core. */ |
| 27 | |
Gustavo Padovan | 8c520a5 | 2012-05-23 04:04:22 -0300 | [diff] [blame] | 28 | #include <linux/export.h> |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 29 | #include <linux/idr.h> |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 30 | #include <linux/rfkill.h> |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 31 | #include <linux/debugfs.h> |
Johan Hedberg | 99780a7 | 2014-02-18 10:40:07 +0200 | [diff] [blame] | 32 | #include <linux/crypto.h> |
Marcel Holtmann | 4721983 | 2013-10-17 17:24:15 -0700 | [diff] [blame] | 33 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
| 35 | #include <net/bluetooth/bluetooth.h> |
| 36 | #include <net/bluetooth/hci_core.h> |
Johan Hedberg | 4bc58f5 | 2014-05-20 09:45:47 +0300 | [diff] [blame] | 37 | #include <net/bluetooth/l2cap.h> |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 38 | #include <net/bluetooth/mgmt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Johan Hedberg | 0857dd3 | 2014-12-19 13:40:20 +0200 | [diff] [blame] | 40 | #include "hci_request.h" |
Marcel Holtmann | 60c5f5f | 2014-12-20 16:05:13 +0100 | [diff] [blame] | 41 | #include "hci_debugfs.h" |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 42 | #include "smp.h" |
| 43 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 44 | static void hci_rx_work(struct work_struct *work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 45 | static void hci_cmd_work(struct work_struct *work); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 46 | static void hci_tx_work(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* HCI device list */ |
| 49 | LIST_HEAD(hci_dev_list); |
| 50 | DEFINE_RWLOCK(hci_dev_list_lock); |
| 51 | |
| 52 | /* HCI callback list */ |
| 53 | LIST_HEAD(hci_cb_list); |
Johan Hedberg | fba7ecf | 2015-02-18 14:53:55 +0200 | [diff] [blame] | 54 | DEFINE_MUTEX(hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 56 | /* HCI ID Numbering */ |
| 57 | static DEFINE_IDA(hci_index_ida); |
| 58 | |
Marcel Holtmann | 899de76 | 2014-07-11 05:51:58 +0200 | [diff] [blame] | 59 | /* ----- HCI requests ----- */ |
| 60 | |
| 61 | #define HCI_REQ_DONE 0 |
| 62 | #define HCI_REQ_PEND 1 |
| 63 | #define HCI_REQ_CANCELED 2 |
| 64 | |
| 65 | #define hci_req_lock(d) mutex_lock(&d->req_lock) |
| 66 | #define hci_req_unlock(d) mutex_unlock(&d->req_lock) |
| 67 | |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 68 | /* ---- HCI debugfs entries ---- */ |
| 69 | |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 70 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
| 71 | size_t count, loff_t *ppos) |
| 72 | { |
| 73 | struct hci_dev *hdev = file->private_data; |
| 74 | char buf[3]; |
| 75 | |
Marcel Holtmann | b7cb93e | 2015-03-13 10:20:35 -0700 | [diff] [blame] | 76 | buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y': 'N'; |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 77 | buf[1] = '\n'; |
| 78 | buf[2] = '\0'; |
| 79 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); |
| 80 | } |
| 81 | |
| 82 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, |
| 83 | size_t count, loff_t *ppos) |
| 84 | { |
| 85 | struct hci_dev *hdev = file->private_data; |
| 86 | struct sk_buff *skb; |
| 87 | char buf[32]; |
| 88 | size_t buf_size = min(count, (sizeof(buf)-1)); |
| 89 | bool enable; |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 90 | |
| 91 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 92 | return -ENETDOWN; |
| 93 | |
| 94 | if (copy_from_user(buf, user_buf, buf_size)) |
| 95 | return -EFAULT; |
| 96 | |
| 97 | buf[buf_size] = '\0'; |
| 98 | if (strtobool(buf, &enable)) |
| 99 | return -EINVAL; |
| 100 | |
Marcel Holtmann | b7cb93e | 2015-03-13 10:20:35 -0700 | [diff] [blame] | 101 | if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 102 | return -EALREADY; |
| 103 | |
| 104 | hci_req_lock(hdev); |
| 105 | if (enable) |
| 106 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, |
| 107 | HCI_CMD_TIMEOUT); |
| 108 | else |
| 109 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, |
| 110 | HCI_CMD_TIMEOUT); |
| 111 | hci_req_unlock(hdev); |
| 112 | |
| 113 | if (IS_ERR(skb)) |
| 114 | return PTR_ERR(skb); |
| 115 | |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 116 | kfree_skb(skb); |
| 117 | |
Marcel Holtmann | b7cb93e | 2015-03-13 10:20:35 -0700 | [diff] [blame] | 118 | hci_dev_change_flag(hdev, HCI_DUT_MODE); |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 119 | |
| 120 | return count; |
| 121 | } |
| 122 | |
| 123 | static const struct file_operations dut_mode_fops = { |
| 124 | .open = simple_open, |
| 125 | .read = dut_mode_read, |
| 126 | .write = dut_mode_write, |
| 127 | .llseek = default_llseek, |
| 128 | }; |
| 129 | |
Marcel Holtmann | 4b4113d | 2015-10-07 19:52:35 +0200 | [diff] [blame] | 130 | static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, |
| 131 | size_t count, loff_t *ppos) |
| 132 | { |
| 133 | struct hci_dev *hdev = file->private_data; |
| 134 | char buf[3]; |
| 135 | |
| 136 | buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y': 'N'; |
| 137 | buf[1] = '\n'; |
| 138 | buf[2] = '\0'; |
| 139 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); |
| 140 | } |
| 141 | |
| 142 | static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, |
| 143 | size_t count, loff_t *ppos) |
| 144 | { |
| 145 | struct hci_dev *hdev = file->private_data; |
| 146 | char buf[32]; |
| 147 | size_t buf_size = min(count, (sizeof(buf)-1)); |
| 148 | bool enable; |
| 149 | int err; |
| 150 | |
| 151 | if (copy_from_user(buf, user_buf, buf_size)) |
| 152 | return -EFAULT; |
| 153 | |
| 154 | buf[buf_size] = '\0'; |
| 155 | if (strtobool(buf, &enable)) |
| 156 | return -EINVAL; |
| 157 | |
Marcel Holtmann | 7e995b9 | 2015-10-17 16:00:26 +0200 | [diff] [blame] | 158 | /* When the diagnostic flags are not persistent and the transport |
| 159 | * is not active, then there is no need for the vendor callback. |
| 160 | * |
| 161 | * Instead just store the desired value. If needed the setting |
| 162 | * will be programmed when the controller gets powered on. |
| 163 | */ |
| 164 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && |
| 165 | !test_bit(HCI_RUNNING, &hdev->flags)) |
| 166 | goto done; |
| 167 | |
Marcel Holtmann | 4b4113d | 2015-10-07 19:52:35 +0200 | [diff] [blame] | 168 | hci_req_lock(hdev); |
| 169 | err = hdev->set_diag(hdev, enable); |
| 170 | hci_req_unlock(hdev); |
| 171 | |
| 172 | if (err < 0) |
| 173 | return err; |
| 174 | |
Marcel Holtmann | 7e995b9 | 2015-10-17 16:00:26 +0200 | [diff] [blame] | 175 | done: |
Marcel Holtmann | 4b4113d | 2015-10-07 19:52:35 +0200 | [diff] [blame] | 176 | if (enable) |
| 177 | hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); |
| 178 | else |
| 179 | hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); |
| 180 | |
| 181 | return count; |
| 182 | } |
| 183 | |
| 184 | static const struct file_operations vendor_diag_fops = { |
| 185 | .open = simple_open, |
| 186 | .read = vendor_diag_read, |
| 187 | .write = vendor_diag_write, |
| 188 | .llseek = default_llseek, |
| 189 | }; |
| 190 | |
Marcel Holtmann | f640ee9 | 2015-10-08 12:35:42 +0200 | [diff] [blame] | 191 | static void hci_debugfs_create_basic(struct hci_dev *hdev) |
| 192 | { |
| 193 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, |
| 194 | &dut_mode_fops); |
| 195 | |
| 196 | if (hdev->set_diag) |
| 197 | debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, |
| 198 | &vendor_diag_fops); |
| 199 | } |
| 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | /* ---- HCI requests ---- */ |
| 202 | |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 203 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, |
| 204 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 206 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
| 208 | if (hdev->req_status == HCI_REQ_PEND) { |
| 209 | hdev->req_result = result; |
| 210 | hdev->req_status = HCI_REQ_DONE; |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 211 | if (skb) |
| 212 | hdev->req_skb = skb_get(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | wake_up_interruptible(&hdev->req_wait_q); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 218 | { |
| 219 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 220 | |
| 221 | if (hdev->req_status == HCI_REQ_PEND) { |
| 222 | hdev->req_result = err; |
| 223 | hdev->req_status = HCI_REQ_CANCELED; |
| 224 | wake_up_interruptible(&hdev->req_wait_q); |
| 225 | } |
| 226 | } |
| 227 | |
Johan Hedberg | 7b1abbb | 2013-04-03 21:54:47 +0300 | [diff] [blame] | 228 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
Johan Hedberg | 07dc93d | 2013-04-19 10:14:51 +0300 | [diff] [blame] | 229 | const void *param, u8 event, u32 timeout) |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 230 | { |
| 231 | DECLARE_WAITQUEUE(wait, current); |
| 232 | struct hci_request req; |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 233 | struct sk_buff *skb; |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 234 | int err = 0; |
| 235 | |
| 236 | BT_DBG("%s", hdev->name); |
| 237 | |
| 238 | hci_req_init(&req, hdev); |
| 239 | |
Johan Hedberg | 7b1abbb | 2013-04-03 21:54:47 +0300 | [diff] [blame] | 240 | hci_req_add_ev(&req, opcode, plen, param, event); |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 241 | |
| 242 | hdev->req_status = HCI_REQ_PEND; |
| 243 | |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 244 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 245 | set_current_state(TASK_INTERRUPTIBLE); |
| 246 | |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 247 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
Chan-yeol Park | 039fada | 2014-10-31 14:23:06 +0900 | [diff] [blame] | 248 | if (err < 0) { |
| 249 | remove_wait_queue(&hdev->req_wait_q, &wait); |
Johan Hedberg | 22a3cea | 2014-11-19 13:16:41 +0200 | [diff] [blame] | 250 | set_current_state(TASK_RUNNING); |
Chan-yeol Park | 039fada | 2014-10-31 14:23:06 +0900 | [diff] [blame] | 251 | return ERR_PTR(err); |
| 252 | } |
| 253 | |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 254 | schedule_timeout(timeout); |
| 255 | |
| 256 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 257 | |
| 258 | if (signal_pending(current)) |
| 259 | return ERR_PTR(-EINTR); |
| 260 | |
| 261 | switch (hdev->req_status) { |
| 262 | case HCI_REQ_DONE: |
| 263 | err = -bt_to_errno(hdev->req_result); |
| 264 | break; |
| 265 | |
| 266 | case HCI_REQ_CANCELED: |
| 267 | err = -hdev->req_result; |
| 268 | break; |
| 269 | |
| 270 | default: |
| 271 | err = -ETIMEDOUT; |
| 272 | break; |
| 273 | } |
| 274 | |
| 275 | hdev->req_status = hdev->req_result = 0; |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 276 | skb = hdev->req_skb; |
| 277 | hdev->req_skb = NULL; |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 278 | |
| 279 | BT_DBG("%s end: err %d", hdev->name, err); |
| 280 | |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 281 | if (err < 0) { |
| 282 | kfree_skb(skb); |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 283 | return ERR_PTR(err); |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 284 | } |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 285 | |
Johan Hedberg | 757aa0b | 2015-04-02 13:41:12 +0300 | [diff] [blame] | 286 | if (!skb) |
| 287 | return ERR_PTR(-ENODATA); |
| 288 | |
| 289 | return skb; |
Johan Hedberg | 7b1abbb | 2013-04-03 21:54:47 +0300 | [diff] [blame] | 290 | } |
| 291 | EXPORT_SYMBOL(__hci_cmd_sync_ev); |
| 292 | |
| 293 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, |
Johan Hedberg | 07dc93d | 2013-04-19 10:14:51 +0300 | [diff] [blame] | 294 | const void *param, u32 timeout) |
Johan Hedberg | 7b1abbb | 2013-04-03 21:54:47 +0300 | [diff] [blame] | 295 | { |
| 296 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); |
Johan Hedberg | 75e84b7 | 2013-04-02 13:35:04 +0300 | [diff] [blame] | 297 | } |
| 298 | EXPORT_SYMBOL(__hci_cmd_sync); |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | /* Execute request and wait for completion. */ |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 301 | static int __hci_req_sync(struct hci_dev *hdev, |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 302 | void (*func)(struct hci_request *req, |
| 303 | unsigned long opt), |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 304 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 306 | struct hci_request req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | DECLARE_WAITQUEUE(wait, current); |
| 308 | int err = 0; |
| 309 | |
| 310 | BT_DBG("%s start", hdev->name); |
| 311 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 312 | hci_req_init(&req, hdev); |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | hdev->req_status = HCI_REQ_PEND; |
| 315 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 316 | func(&req, opt); |
Johan Hedberg | 53cce22 | 2013-03-05 20:37:42 +0200 | [diff] [blame] | 317 | |
Chan-yeol Park | 039fada | 2014-10-31 14:23:06 +0900 | [diff] [blame] | 318 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 319 | set_current_state(TASK_INTERRUPTIBLE); |
| 320 | |
Johan Hedberg | f60cb30 | 2015-04-02 13:41:09 +0300 | [diff] [blame] | 321 | err = hci_req_run_skb(&req, hci_req_sync_complete); |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 322 | if (err < 0) { |
Johan Hedberg | 53cce22 | 2013-03-05 20:37:42 +0200 | [diff] [blame] | 323 | hdev->req_status = 0; |
Andre Guedes | 920c830 | 2013-03-08 11:20:15 -0300 | [diff] [blame] | 324 | |
Chan-yeol Park | 039fada | 2014-10-31 14:23:06 +0900 | [diff] [blame] | 325 | remove_wait_queue(&hdev->req_wait_q, &wait); |
Johan Hedberg | 22a3cea | 2014-11-19 13:16:41 +0200 | [diff] [blame] | 326 | set_current_state(TASK_RUNNING); |
Chan-yeol Park | 039fada | 2014-10-31 14:23:06 +0900 | [diff] [blame] | 327 | |
Andre Guedes | 920c830 | 2013-03-08 11:20:15 -0300 | [diff] [blame] | 328 | /* ENODATA means the HCI request command queue is empty. |
| 329 | * This can happen when a request with conditionals doesn't |
| 330 | * trigger any commands to be sent. This is normal behavior |
| 331 | * and should not trigger an error return. |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 332 | */ |
Andre Guedes | 920c830 | 2013-03-08 11:20:15 -0300 | [diff] [blame] | 333 | if (err == -ENODATA) |
| 334 | return 0; |
| 335 | |
| 336 | return err; |
Johan Hedberg | 53cce22 | 2013-03-05 20:37:42 +0200 | [diff] [blame] | 337 | } |
| 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | schedule_timeout(timeout); |
| 340 | |
| 341 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 342 | |
| 343 | if (signal_pending(current)) |
| 344 | return -EINTR; |
| 345 | |
| 346 | switch (hdev->req_status) { |
| 347 | case HCI_REQ_DONE: |
Joe Perches | e175072 | 2011-06-29 18:18:29 -0700 | [diff] [blame] | 348 | err = -bt_to_errno(hdev->req_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | break; |
| 350 | |
| 351 | case HCI_REQ_CANCELED: |
| 352 | err = -hdev->req_result; |
| 353 | break; |
| 354 | |
| 355 | default: |
| 356 | err = -ETIMEDOUT; |
| 357 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 358 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 360 | hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | BT_DBG("%s end: err %d", hdev->name, err); |
| 363 | |
| 364 | return err; |
| 365 | } |
| 366 | |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 367 | static int hci_req_sync(struct hci_dev *hdev, |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 368 | void (*req)(struct hci_request *req, |
| 369 | unsigned long opt), |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 370 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | { |
| 372 | int ret; |
| 373 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 374 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 375 | return -ENETDOWN; |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* Serialize all requests */ |
| 378 | hci_req_lock(hdev); |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 379 | ret = __hci_req_sync(hdev, req, opt, timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | hci_req_unlock(hdev); |
| 381 | |
| 382 | return ret; |
| 383 | } |
| 384 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 385 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 387 | BT_DBG("%s %ld", req->hdev->name, opt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
| 389 | /* Reset device */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 390 | set_bit(HCI_RESET, &req->hdev->flags); |
| 391 | hci_req_add(req, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 394 | static void bredr_init(struct hci_request *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 396 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | /* Read Local Supported Features */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 399 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 401 | /* Read Local Version */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 402 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 403 | |
| 404 | /* Read BD Address */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 405 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
Johan Hedberg | 0af801b | 2015-02-17 15:05:21 +0200 | [diff] [blame] | 408 | static void amp_init1(struct hci_request *req) |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 409 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 410 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 411 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 412 | /* Read Local Version */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 413 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Andrei Emeltchenko | 6bcbc48 | 2012-03-28 16:31:24 +0300 | [diff] [blame] | 414 | |
Marcel Holtmann | f6996cf | 2013-10-07 02:31:39 -0700 | [diff] [blame] | 415 | /* Read Local Supported Commands */ |
| 416 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
| 417 | |
Andrei Emeltchenko | 6bcbc48 | 2012-03-28 16:31:24 +0300 | [diff] [blame] | 418 | /* Read Local AMP Info */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 419 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
Andrei Emeltchenko | e71dfab | 2012-09-06 15:05:46 +0300 | [diff] [blame] | 420 | |
| 421 | /* Read Data Blk size */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 422 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
Marcel Holtmann | 7528ca1 | 2013-10-07 03:55:52 -0700 | [diff] [blame] | 423 | |
Marcel Holtmann | f38ba94 | 2013-10-07 03:55:53 -0700 | [diff] [blame] | 424 | /* Read Flow Control Mode */ |
| 425 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); |
| 426 | |
Marcel Holtmann | 7528ca1 | 2013-10-07 03:55:52 -0700 | [diff] [blame] | 427 | /* Read Location Data */ |
| 428 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 429 | } |
| 430 | |
Johan Hedberg | 0af801b | 2015-02-17 15:05:21 +0200 | [diff] [blame] | 431 | static void amp_init2(struct hci_request *req) |
| 432 | { |
| 433 | /* Read Local Supported Features. Not all AMP controllers |
| 434 | * support this so it's placed conditionally in the second |
| 435 | * stage init. |
| 436 | */ |
| 437 | if (req->hdev->commands[14] & 0x20) |
| 438 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
| 439 | } |
| 440 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 441 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 442 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 443 | struct hci_dev *hdev = req->hdev; |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 444 | |
| 445 | BT_DBG("%s %ld", hdev->name, opt); |
| 446 | |
Andrei Emeltchenko | 1177871 | 2012-06-11 11:13:10 +0300 | [diff] [blame] | 447 | /* Reset */ |
| 448 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 449 | hci_reset_req(req, 0); |
Andrei Emeltchenko | 1177871 | 2012-06-11 11:13:10 +0300 | [diff] [blame] | 450 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 451 | switch (hdev->dev_type) { |
| 452 | case HCI_BREDR: |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 453 | bredr_init(req); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 454 | break; |
| 455 | |
| 456 | case HCI_AMP: |
Johan Hedberg | 0af801b | 2015-02-17 15:05:21 +0200 | [diff] [blame] | 457 | amp_init1(req); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 458 | break; |
| 459 | |
| 460 | default: |
| 461 | BT_ERR("Unknown device type %d", hdev->dev_type); |
| 462 | break; |
| 463 | } |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 464 | } |
| 465 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 466 | static void bredr_setup(struct hci_request *req) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 467 | { |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 468 | __le16 param; |
| 469 | __u8 flt_type; |
| 470 | |
| 471 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 472 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 473 | |
| 474 | /* Read Class of Device */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 475 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 476 | |
| 477 | /* Read Local Name */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 478 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 479 | |
| 480 | /* Read Voice Setting */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 481 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 482 | |
Marcel Holtmann | b4cb9fb | 2013-10-14 13:56:16 -0700 | [diff] [blame] | 483 | /* Read Number of Supported IAC */ |
| 484 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); |
| 485 | |
Marcel Holtmann | 4b836f3 | 2013-10-14 14:06:36 -0700 | [diff] [blame] | 486 | /* Read Current IAC LAP */ |
| 487 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); |
| 488 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 489 | /* Clear Event Filters */ |
| 490 | flt_type = HCI_FLT_CLEAR_ALL; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 491 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 492 | |
| 493 | /* Connection accept timeout ~20 secs */ |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 494 | param = cpu_to_le16(0x7d00); |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 495 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 496 | } |
| 497 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 498 | static void le_setup(struct hci_request *req) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 499 | { |
Johan Hedberg | c73eee9 | 2013-04-19 18:35:21 +0300 | [diff] [blame] | 500 | struct hci_dev *hdev = req->hdev; |
| 501 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 502 | /* Read LE Buffer Size */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 503 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 504 | |
| 505 | /* Read LE Local Supported Features */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 506 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 507 | |
Marcel Holtmann | 747d3f0 | 2014-02-27 20:37:29 -0800 | [diff] [blame] | 508 | /* Read LE Supported States */ |
| 509 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
| 510 | |
Johan Hedberg | c73eee9 | 2013-04-19 18:35:21 +0300 | [diff] [blame] | 511 | /* LE-only controllers have LE implicitly enabled */ |
| 512 | if (!lmp_bredr_capable(hdev)) |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 513 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 514 | } |
| 515 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 516 | static void hci_setup_event_mask(struct hci_request *req) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 517 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 518 | struct hci_dev *hdev = req->hdev; |
| 519 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 520 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
| 521 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the |
| 522 | * command otherwise. |
| 523 | */ |
| 524 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; |
| 525 | |
| 526 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set |
| 527 | * any event mask for pre 1.2 devices. |
| 528 | */ |
| 529 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) |
| 530 | return; |
| 531 | |
| 532 | if (lmp_bredr_capable(hdev)) { |
| 533 | events[4] |= 0x01; /* Flow Specification Complete */ |
Marcel Holtmann | c7882cb | 2013-08-13 10:00:54 -0700 | [diff] [blame] | 534 | } else { |
| 535 | /* Use a different default for LE-only devices */ |
| 536 | memset(events, 0, sizeof(events)); |
| 537 | events[0] |= 0x10; /* Disconnection Complete */ |
Marcel Holtmann | c7882cb | 2013-08-13 10:00:54 -0700 | [diff] [blame] | 538 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
| 539 | events[1] |= 0x20; /* Command Complete */ |
| 540 | events[1] |= 0x40; /* Command Status */ |
| 541 | events[1] |= 0x80; /* Hardware Error */ |
| 542 | events[2] |= 0x04; /* Number of Completed Packets */ |
| 543 | events[3] |= 0x02; /* Data Buffer Overflow */ |
Marcel Holtmann | 0da71f1 | 2014-07-12 23:36:16 +0200 | [diff] [blame] | 544 | |
| 545 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { |
| 546 | events[0] |= 0x80; /* Encryption Change */ |
| 547 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ |
| 548 | } |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 549 | } |
| 550 | |
Marcel Holtmann | 9fe759c | 2015-11-01 09:45:22 +0100 | [diff] [blame^] | 551 | if (lmp_inq_rssi_capable(hdev) || |
| 552 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 553 | events[4] |= 0x02; /* Inquiry Result with RSSI */ |
| 554 | |
Marcel Holtmann | 70f56aa | 2015-11-01 09:39:49 +0100 | [diff] [blame] | 555 | if (lmp_ext_feat_capable(hdev)) |
| 556 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ |
| 557 | |
| 558 | if (lmp_esco_capable(hdev)) { |
| 559 | events[5] |= 0x08; /* Synchronous Connection Complete */ |
| 560 | events[5] |= 0x10; /* Synchronous Connection Changed */ |
| 561 | } |
| 562 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 563 | if (lmp_sniffsubr_capable(hdev)) |
| 564 | events[5] |= 0x20; /* Sniff Subrating */ |
| 565 | |
| 566 | if (lmp_pause_enc_capable(hdev)) |
| 567 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ |
| 568 | |
| 569 | if (lmp_ext_inq_capable(hdev)) |
| 570 | events[5] |= 0x40; /* Extended Inquiry Result */ |
| 571 | |
| 572 | if (lmp_no_flush_capable(hdev)) |
| 573 | events[7] |= 0x01; /* Enhanced Flush Complete */ |
| 574 | |
| 575 | if (lmp_lsto_capable(hdev)) |
| 576 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ |
| 577 | |
| 578 | if (lmp_ssp_capable(hdev)) { |
| 579 | events[6] |= 0x01; /* IO Capability Request */ |
| 580 | events[6] |= 0x02; /* IO Capability Response */ |
| 581 | events[6] |= 0x04; /* User Confirmation Request */ |
| 582 | events[6] |= 0x08; /* User Passkey Request */ |
| 583 | events[6] |= 0x10; /* Remote OOB Data Request */ |
| 584 | events[6] |= 0x20; /* Simple Pairing Complete */ |
| 585 | events[7] |= 0x04; /* User Passkey Notification */ |
| 586 | events[7] |= 0x08; /* Keypress Notification */ |
| 587 | events[7] |= 0x10; /* Remote Host Supported |
| 588 | * Features Notification |
| 589 | */ |
| 590 | } |
| 591 | |
| 592 | if (lmp_le_capable(hdev)) |
| 593 | events[7] |= 0x20; /* LE Meta-Event */ |
| 594 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 595 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 596 | } |
| 597 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 598 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 599 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 600 | struct hci_dev *hdev = req->hdev; |
| 601 | |
Johan Hedberg | 0af801b | 2015-02-17 15:05:21 +0200 | [diff] [blame] | 602 | if (hdev->dev_type == HCI_AMP) |
| 603 | return amp_init2(req); |
| 604 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 605 | if (lmp_bredr_capable(hdev)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 606 | bredr_setup(req); |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 607 | else |
Marcel Holtmann | a358dc1 | 2015-03-13 02:11:02 -0700 | [diff] [blame] | 608 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 609 | |
| 610 | if (lmp_le_capable(hdev)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 611 | le_setup(req); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 612 | |
Marcel Holtmann | 0f3adea | 2014-12-26 04:42:34 +0100 | [diff] [blame] | 613 | /* All Bluetooth 1.2 and later controllers should support the |
| 614 | * HCI command for reading the local supported commands. |
| 615 | * |
| 616 | * Unfortunately some controllers indicate Bluetooth 1.2 support, |
| 617 | * but do not have support for this command. If that is the case, |
| 618 | * the driver can quirk the behavior and skip reading the local |
| 619 | * supported commands. |
Johan Hedberg | 3f8e2d7 | 2013-07-24 02:32:46 +0300 | [diff] [blame] | 620 | */ |
Marcel Holtmann | 0f3adea | 2014-12-26 04:42:34 +0100 | [diff] [blame] | 621 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && |
| 622 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 623 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 624 | |
| 625 | if (lmp_ssp_capable(hdev)) { |
Marcel Holtmann | 57af75a | 2013-10-18 12:04:47 -0700 | [diff] [blame] | 626 | /* When SSP is available, then the host features page |
| 627 | * should also be available as well. However some |
| 628 | * controllers list the max_page as 0 as long as SSP |
| 629 | * has not been enabled. To achieve proper debugging |
| 630 | * output, force the minimum max_page to 1 at least. |
| 631 | */ |
| 632 | hdev->max_page = 0x01; |
| 633 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 634 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 635 | u8 mode = 0x01; |
Marcel Holtmann | 574ea3c | 2015-01-22 11:15:20 -0800 | [diff] [blame] | 636 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 637 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
| 638 | sizeof(mode), &mode); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 639 | } else { |
| 640 | struct hci_cp_write_eir cp; |
| 641 | |
| 642 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
| 643 | memset(&cp, 0, sizeof(cp)); |
| 644 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 645 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 646 | } |
| 647 | } |
| 648 | |
Marcel Holtmann | 043ec9b | 2015-01-02 23:35:19 -0800 | [diff] [blame] | 649 | if (lmp_inq_rssi_capable(hdev) || |
| 650 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) { |
Marcel Holtmann | 04422da | 2015-01-02 23:35:18 -0800 | [diff] [blame] | 651 | u8 mode; |
| 652 | |
| 653 | /* If Extended Inquiry Result events are supported, then |
| 654 | * they are clearly preferred over Inquiry Result with RSSI |
| 655 | * events. |
| 656 | */ |
| 657 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; |
| 658 | |
| 659 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
| 660 | } |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 661 | |
| 662 | if (lmp_inq_tx_pwr_capable(hdev)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 663 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 664 | |
| 665 | if (lmp_ext_feat_capable(hdev)) { |
| 666 | struct hci_cp_read_local_ext_features cp; |
| 667 | |
| 668 | cp.page = 0x01; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 669 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
| 670 | sizeof(cp), &cp); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 671 | } |
| 672 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 673 | if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 674 | u8 enable = 1; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 675 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
| 676 | &enable); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 677 | } |
| 678 | } |
| 679 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 680 | static void hci_setup_link_policy(struct hci_request *req) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 681 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 682 | struct hci_dev *hdev = req->hdev; |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 683 | struct hci_cp_write_def_link_policy cp; |
| 684 | u16 link_policy = 0; |
| 685 | |
| 686 | if (lmp_rswitch_capable(hdev)) |
| 687 | link_policy |= HCI_LP_RSWITCH; |
| 688 | if (lmp_hold_capable(hdev)) |
| 689 | link_policy |= HCI_LP_HOLD; |
| 690 | if (lmp_sniff_capable(hdev)) |
| 691 | link_policy |= HCI_LP_SNIFF; |
| 692 | if (lmp_park_capable(hdev)) |
| 693 | link_policy |= HCI_LP_PARK; |
| 694 | |
| 695 | cp.policy = cpu_to_le16(link_policy); |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 696 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 697 | } |
| 698 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 699 | static void hci_set_le_support(struct hci_request *req) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 700 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 701 | struct hci_dev *hdev = req->hdev; |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 702 | struct hci_cp_write_le_host_supported cp; |
| 703 | |
Johan Hedberg | c73eee9 | 2013-04-19 18:35:21 +0300 | [diff] [blame] | 704 | /* LE-only devices do not support explicit enablement */ |
| 705 | if (!lmp_bredr_capable(hdev)) |
| 706 | return; |
| 707 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 708 | memset(&cp, 0, sizeof(cp)); |
| 709 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 710 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 711 | cp.le = 0x01; |
Marcel Holtmann | 32226e4 | 2014-07-24 20:04:16 +0200 | [diff] [blame] | 712 | cp.simul = 0x00; |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | if (cp.le != lmp_host_le_capable(hdev)) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 716 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
| 717 | &cp); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 718 | } |
| 719 | |
Johan Hedberg | d62e6d6 | 2013-09-13 11:40:02 +0300 | [diff] [blame] | 720 | static void hci_set_event_mask_page_2(struct hci_request *req) |
| 721 | { |
| 722 | struct hci_dev *hdev = req->hdev; |
| 723 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
| 724 | |
| 725 | /* If Connectionless Slave Broadcast master role is supported |
| 726 | * enable all necessary events for it. |
| 727 | */ |
Marcel Holtmann | 53b834d2 | 2013-12-08 11:55:33 -0800 | [diff] [blame] | 728 | if (lmp_csb_master_capable(hdev)) { |
Johan Hedberg | d62e6d6 | 2013-09-13 11:40:02 +0300 | [diff] [blame] | 729 | events[1] |= 0x40; /* Triggered Clock Capture */ |
| 730 | events[1] |= 0x80; /* Synchronization Train Complete */ |
| 731 | events[2] |= 0x10; /* Slave Page Response Timeout */ |
| 732 | events[2] |= 0x20; /* CSB Channel Map Change */ |
| 733 | } |
| 734 | |
| 735 | /* If Connectionless Slave Broadcast slave role is supported |
| 736 | * enable all necessary events for it. |
| 737 | */ |
Marcel Holtmann | 53b834d2 | 2013-12-08 11:55:33 -0800 | [diff] [blame] | 738 | if (lmp_csb_slave_capable(hdev)) { |
Johan Hedberg | d62e6d6 | 2013-09-13 11:40:02 +0300 | [diff] [blame] | 739 | events[2] |= 0x01; /* Synchronization Train Received */ |
| 740 | events[2] |= 0x02; /* CSB Receive */ |
| 741 | events[2] |= 0x04; /* CSB Timeout */ |
| 742 | events[2] |= 0x08; /* Truncated Page Complete */ |
| 743 | } |
| 744 | |
Marcel Holtmann | 40c59fc | 2014-01-10 02:07:21 -0800 | [diff] [blame] | 745 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
Marcel Holtmann | cd7ca0e | 2014-07-09 09:49:05 +0200 | [diff] [blame] | 746 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
Marcel Holtmann | 40c59fc | 2014-01-10 02:07:21 -0800 | [diff] [blame] | 747 | events[2] |= 0x80; |
| 748 | |
Johan Hedberg | d62e6d6 | 2013-09-13 11:40:02 +0300 | [diff] [blame] | 749 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
| 750 | } |
| 751 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 752 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 753 | { |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 754 | struct hci_dev *hdev = req->hdev; |
Johan Hedberg | d2c5d77 | 2013-04-17 15:00:52 +0300 | [diff] [blame] | 755 | u8 p; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 756 | |
Marcel Holtmann | 0da71f1 | 2014-07-12 23:36:16 +0200 | [diff] [blame] | 757 | hci_setup_event_mask(req); |
| 758 | |
Johan Hedberg | e81be90 | 2015-08-30 21:47:20 +0300 | [diff] [blame] | 759 | if (hdev->commands[6] & 0x20 && |
| 760 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { |
Marcel Holtmann | 48ce62c | 2015-01-12 09:21:26 -0800 | [diff] [blame] | 761 | struct hci_cp_read_stored_link_key cp; |
| 762 | |
| 763 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 764 | cp.read_all = 0x01; |
| 765 | hci_req_add(req, HCI_OP_READ_STORED_LINK_KEY, sizeof(cp), &cp); |
| 766 | } |
| 767 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 768 | if (hdev->commands[5] & 0x10) |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 769 | hci_setup_link_policy(req); |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 770 | |
Marcel Holtmann | 417287d | 2014-12-11 20:21:54 +0100 | [diff] [blame] | 771 | if (hdev->commands[8] & 0x01) |
| 772 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
| 773 | |
| 774 | /* Some older Broadcom based Bluetooth 1.2 controllers do not |
| 775 | * support the Read Page Scan Type command. Check support for |
| 776 | * this command in the bit mask of supported commands. |
| 777 | */ |
| 778 | if (hdev->commands[13] & 0x01) |
| 779 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); |
| 780 | |
Andre Guedes | 9193c6e | 2014-07-01 18:10:09 -0300 | [diff] [blame] | 781 | if (lmp_le_capable(hdev)) { |
| 782 | u8 events[8]; |
| 783 | |
| 784 | memset(events, 0, sizeof(events)); |
Marcel Holtmann | 4d6c705 | 2014-07-13 00:29:22 +0200 | [diff] [blame] | 785 | |
| 786 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) |
| 787 | events[0] |= 0x10; /* LE Long Term Key Request */ |
Andre Guedes | 662bc2e | 2014-07-01 18:10:10 -0300 | [diff] [blame] | 788 | |
| 789 | /* If controller supports the Connection Parameters Request |
| 790 | * Link Layer Procedure, enable the corresponding event. |
| 791 | */ |
| 792 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) |
| 793 | events[0] |= 0x20; /* LE Remote Connection |
| 794 | * Parameter Request |
| 795 | */ |
| 796 | |
Marcel Holtmann | a9f6068 | 2014-12-20 16:28:39 +0100 | [diff] [blame] | 797 | /* If the controller supports the Data Length Extension |
| 798 | * feature, enable the corresponding event. |
| 799 | */ |
| 800 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) |
| 801 | events[0] |= 0x40; /* LE Data Length Change */ |
| 802 | |
Marcel Holtmann | 4b71bba | 2014-12-05 16:20:12 +0100 | [diff] [blame] | 803 | /* If the controller supports Extended Scanner Filter |
| 804 | * Policies, enable the correspondig event. |
| 805 | */ |
| 806 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) |
| 807 | events[1] |= 0x04; /* LE Direct Advertising |
| 808 | * Report |
| 809 | */ |
| 810 | |
Marcel Holtmann | 7d26f5c | 2015-11-01 09:39:51 +0100 | [diff] [blame] | 811 | /* If the controller supports the LE Set Scan Enable command, |
| 812 | * enable the corresponding advertising report event. |
| 813 | */ |
| 814 | if (hdev->commands[26] & 0x08) |
| 815 | events[0] |= 0x02; /* LE Advertising Report */ |
| 816 | |
| 817 | /* If the controller supports the LE Create Connection |
| 818 | * command, enable the corresponding event. |
| 819 | */ |
| 820 | if (hdev->commands[26] & 0x10) |
| 821 | events[0] |= 0x01; /* LE Connection Complete */ |
| 822 | |
| 823 | /* If the controller supports the LE Connection Update |
| 824 | * command, enable the corresponding event. |
| 825 | */ |
| 826 | if (hdev->commands[27] & 0x04) |
| 827 | events[0] |= 0x04; /* LE Connection Update |
| 828 | * Complete |
| 829 | */ |
| 830 | |
| 831 | /* If the controller supports the LE Read Remote Used Features |
| 832 | * command, enable the corresponding event. |
| 833 | */ |
| 834 | if (hdev->commands[27] & 0x20) |
| 835 | events[0] |= 0x08; /* LE Read Remote Used |
| 836 | * Features Complete |
| 837 | */ |
| 838 | |
Marcel Holtmann | 5a34bd5 | 2014-12-05 16:20:15 +0100 | [diff] [blame] | 839 | /* If the controller supports the LE Read Local P-256 |
| 840 | * Public Key command, enable the corresponding event. |
| 841 | */ |
| 842 | if (hdev->commands[34] & 0x02) |
| 843 | events[0] |= 0x80; /* LE Read Local P-256 |
| 844 | * Public Key Complete |
| 845 | */ |
| 846 | |
| 847 | /* If the controller supports the LE Generate DHKey |
| 848 | * command, enable the corresponding event. |
| 849 | */ |
| 850 | if (hdev->commands[34] & 0x04) |
| 851 | events[1] |= 0x01; /* LE Generate DHKey Complete */ |
| 852 | |
Andre Guedes | 9193c6e | 2014-07-01 18:10:09 -0300 | [diff] [blame] | 853 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
| 854 | events); |
| 855 | |
Marcel Holtmann | 15a49cc | 2014-07-12 23:20:50 +0200 | [diff] [blame] | 856 | if (hdev->commands[25] & 0x40) { |
| 857 | /* Read LE Advertising Channel TX Power */ |
| 858 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
| 859 | } |
| 860 | |
Marcel Holtmann | 2ab216a | 2015-11-01 09:39:48 +0100 | [diff] [blame] | 861 | if (hdev->commands[26] & 0x40) { |
| 862 | /* Read LE White List Size */ |
| 863 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, |
| 864 | 0, NULL); |
| 865 | } |
| 866 | |
| 867 | if (hdev->commands[26] & 0x80) { |
| 868 | /* Clear LE White List */ |
| 869 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); |
| 870 | } |
| 871 | |
Marcel Holtmann | a9f6068 | 2014-12-20 16:28:39 +0100 | [diff] [blame] | 872 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) { |
| 873 | /* Read LE Maximum Data Length */ |
| 874 | hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL); |
| 875 | |
| 876 | /* Read LE Suggested Default Data Length */ |
| 877 | hci_req_add(req, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL); |
| 878 | } |
| 879 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 880 | hci_set_le_support(req); |
Andre Guedes | 9193c6e | 2014-07-01 18:10:09 -0300 | [diff] [blame] | 881 | } |
Johan Hedberg | d2c5d77 | 2013-04-17 15:00:52 +0300 | [diff] [blame] | 882 | |
| 883 | /* Read features beyond page 1 if available */ |
| 884 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { |
| 885 | struct hci_cp_read_local_ext_features cp; |
| 886 | |
| 887 | cp.page = p; |
| 888 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
| 889 | sizeof(cp), &cp); |
| 890 | } |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 891 | } |
| 892 | |
Johan Hedberg | 5d4e7e8 | 2013-09-13 11:40:01 +0300 | [diff] [blame] | 893 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
| 894 | { |
| 895 | struct hci_dev *hdev = req->hdev; |
| 896 | |
Marcel Holtmann | 36f260c | 2015-01-12 22:47:22 -0800 | [diff] [blame] | 897 | /* Some Broadcom based Bluetooth controllers do not support the |
| 898 | * Delete Stored Link Key command. They are clearly indicating its |
| 899 | * absence in the bit mask of supported commands. |
| 900 | * |
| 901 | * Check the supported commands and only if the the command is marked |
| 902 | * as supported send it. If not supported assume that the controller |
| 903 | * does not have actual support for stored link keys which makes this |
| 904 | * command redundant anyway. |
| 905 | * |
| 906 | * Some controllers indicate that they support handling deleting |
| 907 | * stored link keys, but they don't. The quirk lets a driver |
| 908 | * just disable this command. |
| 909 | */ |
| 910 | if (hdev->commands[6] & 0x80 && |
| 911 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { |
| 912 | struct hci_cp_delete_stored_link_key cp; |
| 913 | |
| 914 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 915 | cp.delete_all = 0x01; |
| 916 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, |
| 917 | sizeof(cp), &cp); |
| 918 | } |
| 919 | |
Johan Hedberg | d62e6d6 | 2013-09-13 11:40:02 +0300 | [diff] [blame] | 920 | /* Set event mask page 2 if the HCI command for it is supported */ |
| 921 | if (hdev->commands[22] & 0x04) |
| 922 | hci_set_event_mask_page_2(req); |
| 923 | |
Marcel Holtmann | 109e319 | 2014-07-23 19:24:56 +0200 | [diff] [blame] | 924 | /* Read local codec list if the HCI command is supported */ |
| 925 | if (hdev->commands[29] & 0x20) |
| 926 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); |
| 927 | |
Marcel Holtmann | f4fe73e | 2014-07-23 19:24:57 +0200 | [diff] [blame] | 928 | /* Get MWS transport configuration if the HCI command is supported */ |
| 929 | if (hdev->commands[30] & 0x08) |
| 930 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); |
| 931 | |
Johan Hedberg | 5d4e7e8 | 2013-09-13 11:40:01 +0300 | [diff] [blame] | 932 | /* Check for Synchronization Train support */ |
Marcel Holtmann | 53b834d2 | 2013-12-08 11:55:33 -0800 | [diff] [blame] | 933 | if (lmp_sync_train_capable(hdev)) |
Johan Hedberg | 5d4e7e8 | 2013-09-13 11:40:01 +0300 | [diff] [blame] | 934 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
Marcel Holtmann | a6d0d69 | 2014-01-10 02:07:24 -0800 | [diff] [blame] | 935 | |
| 936 | /* Enable Secure Connections if supported and configured */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 937 | if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && |
Marcel Holtmann | 574ea3c | 2015-01-22 11:15:20 -0800 | [diff] [blame] | 938 | bredr_sc_enabled(hdev)) { |
Marcel Holtmann | a6d0d69 | 2014-01-10 02:07:24 -0800 | [diff] [blame] | 939 | u8 support = 0x01; |
Marcel Holtmann | 574ea3c | 2015-01-22 11:15:20 -0800 | [diff] [blame] | 940 | |
Marcel Holtmann | a6d0d69 | 2014-01-10 02:07:24 -0800 | [diff] [blame] | 941 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, |
| 942 | sizeof(support), &support); |
| 943 | } |
Johan Hedberg | 5d4e7e8 | 2013-09-13 11:40:01 +0300 | [diff] [blame] | 944 | } |
| 945 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 946 | static int __hci_init(struct hci_dev *hdev) |
| 947 | { |
| 948 | int err; |
| 949 | |
| 950 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); |
| 951 | if (err < 0) |
| 952 | return err; |
| 953 | |
Marcel Holtmann | f640ee9 | 2015-10-08 12:35:42 +0200 | [diff] [blame] | 954 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
| 955 | hci_debugfs_create_basic(hdev); |
Marcel Holtmann | 4b4148e | 2013-10-19 07:09:12 -0700 | [diff] [blame] | 956 | |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 957 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); |
| 958 | if (err < 0) |
| 959 | return err; |
| 960 | |
Johan Hedberg | 0af801b | 2015-02-17 15:05:21 +0200 | [diff] [blame] | 961 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
| 962 | * BR/EDR/LE type controllers. AMP controllers only need the |
| 963 | * first two stages of init. |
| 964 | */ |
| 965 | if (hdev->dev_type != HCI_BREDR) |
| 966 | return 0; |
| 967 | |
Johan Hedberg | 5d4e7e8 | 2013-09-13 11:40:01 +0300 | [diff] [blame] | 968 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
| 969 | if (err < 0) |
| 970 | return err; |
| 971 | |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 972 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
| 973 | if (err < 0) |
| 974 | return err; |
| 975 | |
Marcel Holtmann | ec6cef9 | 2015-01-01 02:05:16 -0800 | [diff] [blame] | 976 | /* This function is only called when the controller is actually in |
| 977 | * configured state. When the controller is marked as unconfigured, |
| 978 | * this initialization procedure is not run. |
| 979 | * |
| 980 | * It means that it is possible that a controller runs through its |
| 981 | * setup phase and then discovers missing settings. If that is the |
| 982 | * case, then this function will not be called. It then will only |
| 983 | * be called during the config phase. |
| 984 | * |
| 985 | * So only when in setup phase or config phase, create the debugfs |
| 986 | * entries and register the SMP channels. |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 987 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 988 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
| 989 | !hci_dev_test_flag(hdev, HCI_CONFIG)) |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 990 | return 0; |
| 991 | |
Marcel Holtmann | 60c5f5f | 2014-12-20 16:05:13 +0100 | [diff] [blame] | 992 | hci_debugfs_create_common(hdev); |
| 993 | |
Marcel Holtmann | 71c3b60 | 2014-12-20 16:05:15 +0100 | [diff] [blame] | 994 | if (lmp_bredr_capable(hdev)) |
Marcel Holtmann | 60c5f5f | 2014-12-20 16:05:13 +0100 | [diff] [blame] | 995 | hci_debugfs_create_bredr(hdev); |
Marcel Holtmann | 2bfa353 | 2013-10-17 19:16:02 -0700 | [diff] [blame] | 996 | |
Marcel Holtmann | 162a3ba | 2015-01-14 15:43:11 -0800 | [diff] [blame] | 997 | if (lmp_le_capable(hdev)) |
Marcel Holtmann | 60c5f5f | 2014-12-20 16:05:13 +0100 | [diff] [blame] | 998 | hci_debugfs_create_le(hdev); |
Marcel Holtmann | e7b8fc9 | 2013-10-17 11:45:09 -0700 | [diff] [blame] | 999 | |
Marcel Holtmann | baf27f6 | 2013-10-16 03:28:55 -0700 | [diff] [blame] | 1000 | return 0; |
Johan Hedberg | 2177bab | 2013-03-05 20:37:43 +0200 | [diff] [blame] | 1001 | } |
| 1002 | |
Marcel Holtmann | 0ebca7d | 2014-07-05 10:48:02 +0200 | [diff] [blame] | 1003 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
| 1004 | { |
| 1005 | struct hci_dev *hdev = req->hdev; |
| 1006 | |
| 1007 | BT_DBG("%s %ld", hdev->name, opt); |
| 1008 | |
| 1009 | /* Reset */ |
| 1010 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) |
| 1011 | hci_reset_req(req, 0); |
| 1012 | |
| 1013 | /* Read Local Version */ |
| 1014 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
| 1015 | |
| 1016 | /* Read BD Address */ |
| 1017 | if (hdev->set_bdaddr) |
| 1018 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
| 1019 | } |
| 1020 | |
| 1021 | static int __hci_unconf_init(struct hci_dev *hdev) |
| 1022 | { |
| 1023 | int err; |
| 1024 | |
Marcel Holtmann | cc78b44 | 2014-07-06 13:43:20 +0200 | [diff] [blame] | 1025 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 1026 | return 0; |
| 1027 | |
Marcel Holtmann | 0ebca7d | 2014-07-05 10:48:02 +0200 | [diff] [blame] | 1028 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
| 1029 | if (err < 0) |
| 1030 | return err; |
| 1031 | |
Marcel Holtmann | f640ee9 | 2015-10-08 12:35:42 +0200 | [diff] [blame] | 1032 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
| 1033 | hci_debugfs_create_basic(hdev); |
| 1034 | |
Marcel Holtmann | 0ebca7d | 2014-07-05 10:48:02 +0200 | [diff] [blame] | 1035 | return 0; |
| 1036 | } |
| 1037 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1038 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | { |
| 1040 | __u8 scan = opt; |
| 1041 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1042 | BT_DBG("%s %x", req->hdev->name, scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | |
| 1044 | /* Inquiry and Page scans */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1045 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | } |
| 1047 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1048 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | { |
| 1050 | __u8 auth = opt; |
| 1051 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1052 | BT_DBG("%s %x", req->hdev->name, auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | |
| 1054 | /* Authentication */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1055 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | } |
| 1057 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1058 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | { |
| 1060 | __u8 encrypt = opt; |
| 1061 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1062 | BT_DBG("%s %x", req->hdev->name, encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 1064 | /* Encryption */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1065 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | } |
| 1067 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1068 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 1069 | { |
| 1070 | __le16 policy = cpu_to_le16(opt); |
| 1071 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1072 | BT_DBG("%s %x", req->hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 1073 | |
| 1074 | /* Default link policy */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1075 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 1076 | } |
| 1077 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1078 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | * Device is held on return. */ |
| 1080 | struct hci_dev *hci_dev_get(int index) |
| 1081 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1082 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
| 1084 | BT_DBG("%d", index); |
| 1085 | |
| 1086 | if (index < 0) |
| 1087 | return NULL; |
| 1088 | |
| 1089 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1090 | list_for_each_entry(d, &hci_dev_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | if (d->id == index) { |
| 1092 | hdev = hci_dev_hold(d); |
| 1093 | break; |
| 1094 | } |
| 1095 | } |
| 1096 | read_unlock(&hci_dev_list_lock); |
| 1097 | return hdev; |
| 1098 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | |
| 1100 | /* ---- Inquiry support ---- */ |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1101 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1102 | bool hci_discovery_active(struct hci_dev *hdev) |
| 1103 | { |
| 1104 | struct discovery_state *discov = &hdev->discovery; |
| 1105 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 1106 | switch (discov->state) { |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 1107 | case DISCOVERY_FINDING: |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 1108 | case DISCOVERY_RESOLVING: |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1109 | return true; |
| 1110 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 1111 | default: |
| 1112 | return false; |
| 1113 | } |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1114 | } |
| 1115 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1116 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
| 1117 | { |
Johan Hedberg | bb3e0a3 | 2014-07-07 13:24:58 +0300 | [diff] [blame] | 1118 | int old_state = hdev->discovery.state; |
| 1119 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1120 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
| 1121 | |
Johan Hedberg | bb3e0a3 | 2014-07-07 13:24:58 +0300 | [diff] [blame] | 1122 | if (old_state == state) |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1123 | return; |
| 1124 | |
Johan Hedberg | bb3e0a3 | 2014-07-07 13:24:58 +0300 | [diff] [blame] | 1125 | hdev->discovery.state = state; |
| 1126 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1127 | switch (state) { |
| 1128 | case DISCOVERY_STOPPED: |
Andre Guedes | c54c386 | 2014-02-26 20:21:50 -0300 | [diff] [blame] | 1129 | hci_update_background_scan(hdev); |
| 1130 | |
Johan Hedberg | bb3e0a3 | 2014-07-07 13:24:58 +0300 | [diff] [blame] | 1131 | if (old_state != DISCOVERY_STARTING) |
Andre Guedes | 7b99b65 | 2012-02-13 15:41:02 -0300 | [diff] [blame] | 1132 | mgmt_discovering(hdev, 0); |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1133 | break; |
| 1134 | case DISCOVERY_STARTING: |
| 1135 | break; |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 1136 | case DISCOVERY_FINDING: |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1137 | mgmt_discovering(hdev, 1); |
| 1138 | break; |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1139 | case DISCOVERY_RESOLVING: |
| 1140 | break; |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1141 | case DISCOVERY_STOPPING: |
| 1142 | break; |
| 1143 | } |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 1144 | } |
| 1145 | |
Andre Guedes | 1f9b9a5 | 2013-04-30 15:29:27 -0300 | [diff] [blame] | 1146 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 1148 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1149 | struct inquiry_entry *p, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1151 | list_for_each_entry_safe(p, n, &cache->all, all) { |
| 1152 | list_del(&p->all); |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1153 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | } |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1155 | |
| 1156 | INIT_LIST_HEAD(&cache->unknown); |
| 1157 | INIT_LIST_HEAD(&cache->resolve); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | } |
| 1159 | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1160 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
| 1161 | bdaddr_t *bdaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 1163 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | struct inquiry_entry *e; |
| 1165 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1166 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1168 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1170 | return e; |
| 1171 | } |
| 1172 | |
| 1173 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
| 1175 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1176 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1177 | bdaddr_t *bdaddr) |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1178 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 1179 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1180 | struct inquiry_entry *e; |
| 1181 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1182 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1183 | |
| 1184 | list_for_each_entry(e, &cache->unknown, list) { |
| 1185 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 1186 | return e; |
| 1187 | } |
| 1188 | |
| 1189 | return NULL; |
| 1190 | } |
| 1191 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1192 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1193 | bdaddr_t *bdaddr, |
| 1194 | int state) |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1195 | { |
| 1196 | struct discovery_state *cache = &hdev->discovery; |
| 1197 | struct inquiry_entry *e; |
| 1198 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1199 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 1200 | |
| 1201 | list_for_each_entry(e, &cache->resolve, list) { |
| 1202 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) |
| 1203 | return e; |
| 1204 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 1205 | return e; |
| 1206 | } |
| 1207 | |
| 1208 | return NULL; |
| 1209 | } |
| 1210 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1211 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1212 | struct inquiry_entry *ie) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1213 | { |
| 1214 | struct discovery_state *cache = &hdev->discovery; |
| 1215 | struct list_head *pos = &cache->resolve; |
| 1216 | struct inquiry_entry *p; |
| 1217 | |
| 1218 | list_del(&ie->list); |
| 1219 | |
| 1220 | list_for_each_entry(p, &cache->resolve, list) { |
| 1221 | if (p->name_state != NAME_PENDING && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1222 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1223 | break; |
| 1224 | pos = &p->list; |
| 1225 | } |
| 1226 | |
| 1227 | list_add(&ie->list, pos); |
| 1228 | } |
| 1229 | |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1230 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
| 1231 | bool name_known) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 1233 | struct discovery_state *cache = &hdev->discovery; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1234 | struct inquiry_entry *ie; |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1235 | u32 flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1237 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 1239 | hci_remove_remote_oob_data(hdev, &data->bdaddr, BDADDR_BREDR); |
Szymon Janc | 2b2fec4 | 2012-11-20 11:38:54 +0100 | [diff] [blame] | 1240 | |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1241 | if (!data->ssp_mode) |
| 1242 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 1243 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1244 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1245 | if (ie) { |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1246 | if (!ie->data.ssp_mode) |
| 1247 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 1248 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1249 | if (ie->name_state == NAME_NEEDED && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1250 | data->rssi != ie->data.rssi) { |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1251 | ie->data.rssi = data->rssi; |
| 1252 | hci_inquiry_cache_update_resolve(hdev, ie); |
| 1253 | } |
| 1254 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1255 | goto update; |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 1256 | } |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1257 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1258 | /* Entry not in the cache. Add new one. */ |
Johan Hedberg | 27f70f3 | 2014-07-21 10:50:06 +0300 | [diff] [blame] | 1259 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1260 | if (!ie) { |
| 1261 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
| 1262 | goto done; |
| 1263 | } |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1264 | |
| 1265 | list_add(&ie->all, &cache->all); |
| 1266 | |
| 1267 | if (name_known) { |
| 1268 | ie->name_state = NAME_KNOWN; |
| 1269 | } else { |
| 1270 | ie->name_state = NAME_NOT_KNOWN; |
| 1271 | list_add(&ie->list, &cache->unknown); |
| 1272 | } |
| 1273 | |
| 1274 | update: |
| 1275 | if (name_known && ie->name_state != NAME_KNOWN && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1276 | ie->name_state != NAME_PENDING) { |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1277 | ie->name_state = NAME_KNOWN; |
| 1278 | list_del(&ie->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | } |
| 1280 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1281 | memcpy(&ie->data, data, sizeof(*data)); |
| 1282 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | cache->timestamp = jiffies; |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 1284 | |
| 1285 | if (ie->name_state == NAME_NOT_KNOWN) |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1286 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 1287 | |
Marcel Holtmann | af58925 | 2014-07-01 14:11:20 +0200 | [diff] [blame] | 1288 | done: |
| 1289 | return flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | } |
| 1291 | |
| 1292 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 1293 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 1294 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 1296 | struct inquiry_entry *e; |
| 1297 | int copied = 0; |
| 1298 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 1299 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | struct inquiry_data *data = &e->data; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1301 | |
| 1302 | if (copied >= num) |
| 1303 | break; |
| 1304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | bacpy(&info->bdaddr, &data->bdaddr); |
| 1306 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 1307 | info->pscan_period_mode = data->pscan_period_mode; |
| 1308 | info->pscan_mode = data->pscan_mode; |
| 1309 | memcpy(info->dev_class, data->dev_class, 3); |
| 1310 | info->clock_offset = data->clock_offset; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | info++; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 1313 | copied++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | } |
| 1315 | |
| 1316 | BT_DBG("cache %p, copied %d", cache, copied); |
| 1317 | return copied; |
| 1318 | } |
| 1319 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1320 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | { |
| 1322 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1323 | struct hci_dev *hdev = req->hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | struct hci_cp_inquiry cp; |
| 1325 | |
| 1326 | BT_DBG("%s", hdev->name); |
| 1327 | |
| 1328 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 1329 | return; |
| 1330 | |
| 1331 | /* Start Inquiry */ |
| 1332 | memcpy(&cp.lap, &ir->lap, 3); |
| 1333 | cp.length = ir->length; |
| 1334 | cp.num_rsp = ir->num_rsp; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 1335 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | int hci_inquiry(void __user *arg) |
| 1339 | { |
| 1340 | __u8 __user *ptr = arg; |
| 1341 | struct hci_inquiry_req ir; |
| 1342 | struct hci_dev *hdev; |
| 1343 | int err = 0, do_inquiry = 0, max_rsp; |
| 1344 | long timeo; |
| 1345 | __u8 *buf; |
| 1346 | |
| 1347 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 1348 | return -EFAULT; |
| 1349 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 1350 | hdev = hci_dev_get(ir.dev_id); |
| 1351 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | return -ENODEV; |
| 1353 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1354 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1355 | err = -EBUSY; |
| 1356 | goto done; |
| 1357 | } |
| 1358 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1359 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1360 | err = -EOPNOTSUPP; |
| 1361 | goto done; |
| 1362 | } |
| 1363 | |
Marcel Holtmann | 5b69bef5 | 2013-10-10 10:02:08 -0700 | [diff] [blame] | 1364 | if (hdev->dev_type != HCI_BREDR) { |
| 1365 | err = -EOPNOTSUPP; |
| 1366 | goto done; |
| 1367 | } |
| 1368 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1369 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 1370 | err = -EOPNOTSUPP; |
| 1371 | goto done; |
| 1372 | } |
| 1373 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1374 | hci_dev_lock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1375 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1376 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
Andre Guedes | 1f9b9a5 | 2013-04-30 15:29:27 -0300 | [diff] [blame] | 1377 | hci_inquiry_cache_flush(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | do_inquiry = 1; |
| 1379 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1380 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1382 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1383 | |
| 1384 | if (do_inquiry) { |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 1385 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
| 1386 | timeo); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1387 | if (err < 0) |
| 1388 | goto done; |
Andre Guedes | 3e13fa1 | 2013-03-27 20:04:56 -0300 | [diff] [blame] | 1389 | |
| 1390 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is |
| 1391 | * cleared). If it is interrupted by a signal, return -EINTR. |
| 1392 | */ |
NeilBrown | 7431620 | 2014-07-07 15:16:04 +1000 | [diff] [blame] | 1393 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
Andre Guedes | 3e13fa1 | 2013-03-27 20:04:56 -0300 | [diff] [blame] | 1394 | TASK_INTERRUPTIBLE)) |
| 1395 | return -EINTR; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1396 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 1398 | /* for unlimited number of responses we will use buffer with |
| 1399 | * 255 entries |
| 1400 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 1402 | |
| 1403 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 1404 | * copy it to the user space. |
| 1405 | */ |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 1406 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1407 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | err = -ENOMEM; |
| 1409 | goto done; |
| 1410 | } |
| 1411 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1412 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1414 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | |
| 1416 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 1417 | |
| 1418 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 1419 | ptr += sizeof(ir); |
| 1420 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1421 | ir.num_rsp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1423 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | err = -EFAULT; |
| 1425 | |
| 1426 | kfree(buf); |
| 1427 | |
| 1428 | done: |
| 1429 | hci_dev_put(hdev); |
| 1430 | return err; |
| 1431 | } |
| 1432 | |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 1433 | static int hci_dev_do_open(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | int ret = 0; |
| 1436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | BT_DBG("%s %p", hdev->name, hdev); |
| 1438 | |
| 1439 | hci_req_lock(hdev); |
| 1440 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1441 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 1442 | ret = -ENODEV; |
| 1443 | goto done; |
| 1444 | } |
| 1445 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1446 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
| 1447 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 1448 | /* Check for rfkill but allow the HCI setup stage to |
| 1449 | * proceed (which in itself doesn't cause any RF activity). |
| 1450 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1451 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 1452 | ret = -ERFKILL; |
| 1453 | goto done; |
| 1454 | } |
| 1455 | |
| 1456 | /* Check for valid public address or a configured static |
| 1457 | * random adddress, but let the HCI setup proceed to |
| 1458 | * be able to determine if there is a public address |
| 1459 | * or not. |
| 1460 | * |
Marcel Holtmann | c6beca0 | 2014-02-17 09:21:19 -0800 | [diff] [blame] | 1461 | * In case of user channel usage, it is not important |
| 1462 | * if a public address or static random address is |
| 1463 | * available. |
| 1464 | * |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 1465 | * This check is only valid for BR/EDR controllers |
| 1466 | * since AMP controllers do not have an address. |
| 1467 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1468 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
Marcel Holtmann | c6beca0 | 2014-02-17 09:21:19 -0800 | [diff] [blame] | 1469 | hdev->dev_type == HCI_BREDR && |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 1470 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
| 1471 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { |
| 1472 | ret = -EADDRNOTAVAIL; |
| 1473 | goto done; |
| 1474 | } |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1475 | } |
| 1476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 1478 | ret = -EALREADY; |
| 1479 | goto done; |
| 1480 | } |
| 1481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | if (hdev->open(hdev)) { |
| 1483 | ret = -EIO; |
| 1484 | goto done; |
| 1485 | } |
| 1486 | |
Marcel Holtmann | e9ca8bf | 2015-10-04 23:34:02 +0200 | [diff] [blame] | 1487 | set_bit(HCI_RUNNING, &hdev->flags); |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 1488 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); |
Marcel Holtmann | 4a3f95b | 2015-10-04 23:34:00 +0200 | [diff] [blame] | 1489 | |
Marcel Holtmann | f41c70c | 2012-11-12 14:02:14 +0900 | [diff] [blame] | 1490 | atomic_set(&hdev->cmd_cnt, 1); |
| 1491 | set_bit(HCI_INIT, &hdev->flags); |
| 1492 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1493 | if (hci_dev_test_flag(hdev, HCI_SETUP)) { |
Marcel Holtmann | e131d74 | 2015-10-20 02:30:47 +0200 | [diff] [blame] | 1494 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); |
| 1495 | |
Marcel Holtmann | af202f8 | 2014-07-04 17:23:34 +0200 | [diff] [blame] | 1496 | if (hdev->setup) |
| 1497 | ret = hdev->setup(hdev); |
Marcel Holtmann | f41c70c | 2012-11-12 14:02:14 +0900 | [diff] [blame] | 1498 | |
Marcel Holtmann | af202f8 | 2014-07-04 17:23:34 +0200 | [diff] [blame] | 1499 | /* The transport driver can set these quirks before |
| 1500 | * creating the HCI device or in its setup callback. |
| 1501 | * |
| 1502 | * In case any of them is set, the controller has to |
| 1503 | * start up as unconfigured. |
| 1504 | */ |
Marcel Holtmann | eb1904f | 2014-07-04 17:23:33 +0200 | [diff] [blame] | 1505 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
| 1506 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 1507 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
Marcel Holtmann | 0ebca7d | 2014-07-05 10:48:02 +0200 | [diff] [blame] | 1508 | |
| 1509 | /* For an unconfigured controller it is required to |
| 1510 | * read at least the version information provided by |
| 1511 | * the Read Local Version Information command. |
| 1512 | * |
| 1513 | * If the set_bdaddr driver callback is provided, then |
| 1514 | * also the original Bluetooth public device address |
| 1515 | * will be read using the Read BD Address command. |
| 1516 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1517 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
Marcel Holtmann | 0ebca7d | 2014-07-05 10:48:02 +0200 | [diff] [blame] | 1518 | ret = __hci_unconf_init(hdev); |
Marcel Holtmann | 89bc22d | 2014-07-04 16:54:37 +0200 | [diff] [blame] | 1519 | } |
| 1520 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1521 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { |
Marcel Holtmann | 9713c17 | 2014-07-06 12:11:15 +0200 | [diff] [blame] | 1522 | /* If public address change is configured, ensure that |
| 1523 | * the address gets programmed. If the driver does not |
| 1524 | * support changing the public address, fail the power |
| 1525 | * on procedure. |
| 1526 | */ |
| 1527 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && |
| 1528 | hdev->set_bdaddr) |
Marcel Holtmann | 24c457e | 2014-07-02 00:53:47 +0200 | [diff] [blame] | 1529 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
| 1530 | else |
| 1531 | ret = -EADDRNOTAVAIL; |
| 1532 | } |
Marcel Holtmann | f41c70c | 2012-11-12 14:02:14 +0900 | [diff] [blame] | 1533 | |
| 1534 | if (!ret) { |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1535 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
Marcel Holtmann | 98a63aa | 2015-10-20 23:25:42 +0200 | [diff] [blame] | 1536 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | f41c70c | 2012-11-12 14:02:14 +0900 | [diff] [blame] | 1537 | ret = __hci_init(hdev); |
Marcel Holtmann | 98a63aa | 2015-10-20 23:25:42 +0200 | [diff] [blame] | 1538 | if (!ret && hdev->post_init) |
| 1539 | ret = hdev->post_init(hdev); |
| 1540 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | } |
| 1542 | |
Marcel Holtmann | 7e995b9 | 2015-10-17 16:00:26 +0200 | [diff] [blame] | 1543 | /* If the HCI Reset command is clearing all diagnostic settings, |
| 1544 | * then they need to be reprogrammed after the init procedure |
| 1545 | * completed. |
| 1546 | */ |
| 1547 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && |
| 1548 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) |
| 1549 | ret = hdev->set_diag(hdev, true); |
| 1550 | |
Marcel Holtmann | f41c70c | 2012-11-12 14:02:14 +0900 | [diff] [blame] | 1551 | clear_bit(HCI_INIT, &hdev->flags); |
| 1552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | if (!ret) { |
| 1554 | hci_dev_hold(hdev); |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 1555 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | set_bit(HCI_UP, &hdev->flags); |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 1557 | hci_sock_dev_event(hdev, HCI_DEV_UP); |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1558 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
| 1559 | !hci_dev_test_flag(hdev, HCI_CONFIG) && |
| 1560 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
| 1561 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
Marcel Holtmann | 1514b89 | 2013-10-06 08:25:01 -0700 | [diff] [blame] | 1562 | hdev->dev_type == HCI_BREDR) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1563 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1564 | mgmt_powered(hdev, 1); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1565 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 1566 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1567 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | /* Init failed, cleanup */ |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 1569 | flush_work(&hdev->tx_work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1570 | flush_work(&hdev->cmd_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 1571 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | |
| 1573 | skb_queue_purge(&hdev->cmd_q); |
| 1574 | skb_queue_purge(&hdev->rx_q); |
| 1575 | |
| 1576 | if (hdev->flush) |
| 1577 | hdev->flush(hdev); |
| 1578 | |
| 1579 | if (hdev->sent_cmd) { |
| 1580 | kfree_skb(hdev->sent_cmd); |
| 1581 | hdev->sent_cmd = NULL; |
| 1582 | } |
| 1583 | |
Marcel Holtmann | e9ca8bf | 2015-10-04 23:34:02 +0200 | [diff] [blame] | 1584 | clear_bit(HCI_RUNNING, &hdev->flags); |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 1585 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
Marcel Holtmann | 4a3f95b | 2015-10-04 23:34:00 +0200 | [diff] [blame] | 1586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | hdev->close(hdev); |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1588 | hdev->flags &= BIT(HCI_RAW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | } |
| 1590 | |
| 1591 | done: |
| 1592 | hci_req_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | return ret; |
| 1594 | } |
| 1595 | |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 1596 | /* ---- HCI ioctl helpers ---- */ |
| 1597 | |
| 1598 | int hci_dev_open(__u16 dev) |
| 1599 | { |
| 1600 | struct hci_dev *hdev; |
| 1601 | int err; |
| 1602 | |
| 1603 | hdev = hci_dev_get(dev); |
| 1604 | if (!hdev) |
| 1605 | return -ENODEV; |
| 1606 | |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 1607 | /* Devices that are marked as unconfigured can only be powered |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1608 | * up as user channel. Trying to bring them up as normal devices |
| 1609 | * will result into a failure. Only user channel operation is |
| 1610 | * possible. |
| 1611 | * |
| 1612 | * When this function is called for a user channel, the flag |
| 1613 | * HCI_USER_CHANNEL will be set first before attempting to |
| 1614 | * open the device. |
| 1615 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1616 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && |
| 1617 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1618 | err = -EOPNOTSUPP; |
| 1619 | goto done; |
| 1620 | } |
| 1621 | |
Johan Hedberg | e1d08f4 | 2013-10-01 22:44:50 +0300 | [diff] [blame] | 1622 | /* We need to ensure that no other power on/off work is pending |
| 1623 | * before proceeding to call hci_dev_do_open. This is |
| 1624 | * particularly important if the setup procedure has not yet |
| 1625 | * completed. |
| 1626 | */ |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 1627 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
Johan Hedberg | e1d08f4 | 2013-10-01 22:44:50 +0300 | [diff] [blame] | 1628 | cancel_delayed_work(&hdev->power_off); |
| 1629 | |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 1630 | /* After this call it is guaranteed that the setup procedure |
| 1631 | * has finished. This means that error conditions like RFKILL |
| 1632 | * or no valid public or static random address apply. |
| 1633 | */ |
Johan Hedberg | e1d08f4 | 2013-10-01 22:44:50 +0300 | [diff] [blame] | 1634 | flush_workqueue(hdev->req_workqueue); |
| 1635 | |
Marcel Holtmann | 12aa4f0 | 2014-07-10 15:25:22 +0200 | [diff] [blame] | 1636 | /* For controllers not using the management interface and that |
Johan Hedberg | b6ae845 | 2014-07-30 09:22:22 +0300 | [diff] [blame] | 1637 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
Marcel Holtmann | 12aa4f0 | 2014-07-10 15:25:22 +0200 | [diff] [blame] | 1638 | * so that pairing works for them. Once the management interface |
| 1639 | * is in use this bit will be cleared again and userspace has |
| 1640 | * to explicitly enable it. |
| 1641 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1642 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
| 1643 | !hci_dev_test_flag(hdev, HCI_MGMT)) |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 1644 | hci_dev_set_flag(hdev, HCI_BONDABLE); |
Marcel Holtmann | 12aa4f0 | 2014-07-10 15:25:22 +0200 | [diff] [blame] | 1645 | |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 1646 | err = hci_dev_do_open(hdev); |
| 1647 | |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1648 | done: |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 1649 | hci_dev_put(hdev); |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 1650 | return err; |
| 1651 | } |
| 1652 | |
Johan Hedberg | d7347f3 | 2014-07-04 12:37:23 +0300 | [diff] [blame] | 1653 | /* This function requires the caller holds hdev->lock */ |
| 1654 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) |
| 1655 | { |
| 1656 | struct hci_conn_params *p; |
| 1657 | |
Johan Hedberg | f161dd4 | 2014-08-15 21:06:54 +0300 | [diff] [blame] | 1658 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
| 1659 | if (p->conn) { |
| 1660 | hci_conn_drop(p->conn); |
Johan Hedberg | f8aaf9b | 2014-08-17 23:28:57 +0300 | [diff] [blame] | 1661 | hci_conn_put(p->conn); |
Johan Hedberg | f161dd4 | 2014-08-15 21:06:54 +0300 | [diff] [blame] | 1662 | p->conn = NULL; |
| 1663 | } |
Johan Hedberg | d7347f3 | 2014-07-04 12:37:23 +0300 | [diff] [blame] | 1664 | list_del_init(&p->action); |
Johan Hedberg | f161dd4 | 2014-08-15 21:06:54 +0300 | [diff] [blame] | 1665 | } |
Johan Hedberg | d7347f3 | 2014-07-04 12:37:23 +0300 | [diff] [blame] | 1666 | |
| 1667 | BT_DBG("All LE pending actions cleared"); |
| 1668 | } |
| 1669 | |
Simon Fels | 6b3cc1d | 2015-09-02 12:10:12 +0200 | [diff] [blame] | 1670 | int hci_dev_do_close(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | { |
Marcel Holtmann | acc649c | 2015-10-08 01:53:55 +0200 | [diff] [blame] | 1672 | bool auto_off; |
| 1673 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | BT_DBG("%s %p", hdev->name, hdev); |
| 1675 | |
Gabriele Mazzotta | d24d814 | 2015-04-26 20:51:50 +0200 | [diff] [blame] | 1676 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && |
Loic Poulain | 867146a | 2015-06-09 11:46:30 +0200 | [diff] [blame] | 1677 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && |
Gabriele Mazzotta | d24d814 | 2015-04-26 20:51:50 +0200 | [diff] [blame] | 1678 | test_bit(HCI_UP, &hdev->flags)) { |
Tedd Ho-Jeong An | a44fecb | 2015-02-13 09:20:50 -0800 | [diff] [blame] | 1679 | /* Execute vendor specific shutdown routine */ |
| 1680 | if (hdev->shutdown) |
| 1681 | hdev->shutdown(hdev); |
| 1682 | } |
| 1683 | |
Vinicius Costa Gomes | 78c04c0 | 2012-09-14 16:34:46 -0300 | [diff] [blame] | 1684 | cancel_delayed_work(&hdev->power_off); |
| 1685 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | hci_req_cancel(hdev, ENODEV); |
| 1687 | hci_req_lock(hdev); |
| 1688 | |
| 1689 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 1690 | cancel_delayed_work_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | hci_req_unlock(hdev); |
| 1692 | return 0; |
| 1693 | } |
| 1694 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 1695 | /* Flush RX and TX works */ |
| 1696 | flush_work(&hdev->tx_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 1697 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1699 | if (hdev->discov_timeout > 0) { |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 1700 | cancel_delayed_work(&hdev->discov_off); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1701 | hdev->discov_timeout = 0; |
Marcel Holtmann | a358dc1 | 2015-03-13 02:11:02 -0700 | [diff] [blame] | 1702 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); |
| 1703 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1704 | } |
| 1705 | |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 1706 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) |
Johan Hedberg | 7d78525 | 2011-12-15 00:47:39 +0200 | [diff] [blame] | 1707 | cancel_delayed_work(&hdev->service_cache); |
| 1708 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1709 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 1710 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
Johan Hedberg | 4518bb0 | 2014-02-24 20:35:07 +0200 | [diff] [blame] | 1711 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1712 | if (hci_dev_test_flag(hdev, HCI_MGMT)) |
Johan Hedberg | 4518bb0 | 2014-02-24 20:35:07 +0200 | [diff] [blame] | 1713 | cancel_delayed_work_sync(&hdev->rpa_expired); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1714 | |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 1715 | if (hdev->adv_instance_timeout) { |
| 1716 | cancel_delayed_work_sync(&hdev->adv_instance_expire); |
| 1717 | hdev->adv_instance_timeout = 0; |
| 1718 | } |
| 1719 | |
Johan Hedberg | 76727c0 | 2014-11-18 09:00:14 +0200 | [diff] [blame] | 1720 | /* Avoid potential lockdep warnings from the *_flush() calls by |
| 1721 | * ensuring the workqueue is empty up front. |
| 1722 | */ |
| 1723 | drain_workqueue(hdev->workqueue); |
| 1724 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1725 | hci_dev_lock(hdev); |
Johan Hedberg | 1aeb9c6 | 2014-12-11 21:45:46 +0200 | [diff] [blame] | 1726 | |
Johan Hedberg | 8f502f8 | 2015-01-28 19:56:02 +0200 | [diff] [blame] | 1727 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| 1728 | |
Marcel Holtmann | acc649c | 2015-10-08 01:53:55 +0200 | [diff] [blame] | 1729 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); |
| 1730 | |
| 1731 | if (!auto_off && hdev->dev_type == HCI_BREDR) |
| 1732 | mgmt_powered(hdev, 0); |
Johan Hedberg | 1aeb9c6 | 2014-12-11 21:45:46 +0200 | [diff] [blame] | 1733 | |
Andre Guedes | 1f9b9a5 | 2013-04-30 15:29:27 -0300 | [diff] [blame] | 1734 | hci_inquiry_cache_flush(hdev); |
Johan Hedberg | d7347f3 | 2014-07-04 12:37:23 +0300 | [diff] [blame] | 1735 | hci_pend_le_actions_clear(hdev); |
Johan Hedberg | f161dd4 | 2014-08-15 21:06:54 +0300 | [diff] [blame] | 1736 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1737 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | |
Marcel Holtmann | 64dae96 | 2015-01-28 14:10:28 -0800 | [diff] [blame] | 1739 | smp_unregister(hdev); |
| 1740 | |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 1741 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | |
| 1743 | if (hdev->flush) |
| 1744 | hdev->flush(hdev); |
| 1745 | |
| 1746 | /* Reset device */ |
| 1747 | skb_queue_purge(&hdev->cmd_q); |
| 1748 | atomic_set(&hdev->cmd_cnt, 1); |
Marcel Holtmann | acc649c | 2015-10-08 01:53:55 +0200 | [diff] [blame] | 1749 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && |
| 1750 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 1752 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | clear_bit(HCI_INIT, &hdev->flags); |
| 1754 | } |
| 1755 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1756 | /* flush cmd work */ |
| 1757 | flush_work(&hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | |
| 1759 | /* Drop queues */ |
| 1760 | skb_queue_purge(&hdev->rx_q); |
| 1761 | skb_queue_purge(&hdev->cmd_q); |
| 1762 | skb_queue_purge(&hdev->raw_q); |
| 1763 | |
| 1764 | /* Drop last sent command */ |
| 1765 | if (hdev->sent_cmd) { |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 1766 | cancel_delayed_work_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | kfree_skb(hdev->sent_cmd); |
| 1768 | hdev->sent_cmd = NULL; |
| 1769 | } |
| 1770 | |
Marcel Holtmann | e9ca8bf | 2015-10-04 23:34:02 +0200 | [diff] [blame] | 1771 | clear_bit(HCI_RUNNING, &hdev->flags); |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 1772 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); |
Marcel Holtmann | 4a3f95b | 2015-10-04 23:34:00 +0200 | [diff] [blame] | 1773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | /* After this point our queues are empty |
| 1775 | * and no tasks are scheduled. */ |
| 1776 | hdev->close(hdev); |
| 1777 | |
Johan Hedberg | 35b973c | 2013-03-15 17:06:59 -0500 | [diff] [blame] | 1778 | /* Clear flags */ |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1779 | hdev->flags &= BIT(HCI_RAW); |
Marcel Holtmann | eacb44d | 2015-03-13 09:04:17 -0700 | [diff] [blame] | 1780 | hci_dev_clear_volatile_flags(hdev); |
Johan Hedberg | 35b973c | 2013-03-15 17:06:59 -0500 | [diff] [blame] | 1781 | |
Andrei Emeltchenko | ced5c33 | 2012-11-28 17:59:42 +0200 | [diff] [blame] | 1782 | /* Controller radio is available but is currently powered down */ |
Marcel Holtmann | 536619e | 2013-10-05 11:47:45 -0700 | [diff] [blame] | 1783 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
Andrei Emeltchenko | ced5c33 | 2012-11-28 17:59:42 +0200 | [diff] [blame] | 1784 | |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 1785 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
Johan Hedberg | 09b3c3f | 2012-02-22 22:01:41 +0200 | [diff] [blame] | 1786 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
Marcel Holtmann | 7a4cd51 | 2014-02-19 19:52:13 -0800 | [diff] [blame] | 1787 | bacpy(&hdev->random_addr, BDADDR_ANY); |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 1788 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | hci_req_unlock(hdev); |
| 1790 | |
| 1791 | hci_dev_put(hdev); |
| 1792 | return 0; |
| 1793 | } |
| 1794 | |
| 1795 | int hci_dev_close(__u16 dev) |
| 1796 | { |
| 1797 | struct hci_dev *hdev; |
| 1798 | int err; |
| 1799 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1800 | hdev = hci_dev_get(dev); |
| 1801 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | return -ENODEV; |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1803 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1804 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1805 | err = -EBUSY; |
| 1806 | goto done; |
| 1807 | } |
| 1808 | |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 1809 | if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1810 | cancel_delayed_work(&hdev->power_off); |
| 1811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | err = hci_dev_do_close(hdev); |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1813 | |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1814 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | hci_dev_put(hdev); |
| 1816 | return err; |
| 1817 | } |
| 1818 | |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1819 | static int hci_dev_do_reset(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | { |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1821 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1823 | BT_DBG("%s %p", hdev->name, hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | |
| 1825 | hci_req_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | /* Drop queues */ |
| 1828 | skb_queue_purge(&hdev->rx_q); |
| 1829 | skb_queue_purge(&hdev->cmd_q); |
| 1830 | |
Johan Hedberg | 76727c0 | 2014-11-18 09:00:14 +0200 | [diff] [blame] | 1831 | /* Avoid potential lockdep warnings from the *_flush() calls by |
| 1832 | * ensuring the workqueue is empty up front. |
| 1833 | */ |
| 1834 | drain_workqueue(hdev->workqueue); |
| 1835 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1836 | hci_dev_lock(hdev); |
Andre Guedes | 1f9b9a5 | 2013-04-30 15:29:27 -0300 | [diff] [blame] | 1837 | hci_inquiry_cache_flush(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1839 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | |
| 1841 | if (hdev->flush) |
| 1842 | hdev->flush(hdev); |
| 1843 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1844 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 1845 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1847 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | hci_req_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | return ret; |
| 1851 | } |
| 1852 | |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1853 | int hci_dev_reset(__u16 dev) |
| 1854 | { |
| 1855 | struct hci_dev *hdev; |
| 1856 | int err; |
| 1857 | |
| 1858 | hdev = hci_dev_get(dev); |
| 1859 | if (!hdev) |
| 1860 | return -ENODEV; |
| 1861 | |
| 1862 | if (!test_bit(HCI_UP, &hdev->flags)) { |
| 1863 | err = -ENETDOWN; |
| 1864 | goto done; |
| 1865 | } |
| 1866 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1867 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1868 | err = -EBUSY; |
| 1869 | goto done; |
| 1870 | } |
| 1871 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1872 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Marcel Holtmann | 5c91249 | 2015-01-28 11:53:05 -0800 | [diff] [blame] | 1873 | err = -EOPNOTSUPP; |
| 1874 | goto done; |
| 1875 | } |
| 1876 | |
| 1877 | err = hci_dev_do_reset(hdev); |
| 1878 | |
| 1879 | done: |
| 1880 | hci_dev_put(hdev); |
| 1881 | return err; |
| 1882 | } |
| 1883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | int hci_dev_reset_stat(__u16 dev) |
| 1885 | { |
| 1886 | struct hci_dev *hdev; |
| 1887 | int ret = 0; |
| 1888 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1889 | hdev = hci_dev_get(dev); |
| 1890 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | return -ENODEV; |
| 1892 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1893 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1894 | ret = -EBUSY; |
| 1895 | goto done; |
| 1896 | } |
| 1897 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1898 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1899 | ret = -EOPNOTSUPP; |
| 1900 | goto done; |
| 1901 | } |
| 1902 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 1904 | |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1905 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | hci_dev_put(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | return ret; |
| 1908 | } |
| 1909 | |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1910 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
| 1911 | { |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1912 | bool conn_changed, discov_changed; |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1913 | |
| 1914 | BT_DBG("%s scan 0x%02x", hdev->name, scan); |
| 1915 | |
| 1916 | if ((scan & SCAN_PAGE)) |
Marcel Holtmann | 238be78 | 2015-03-13 02:11:06 -0700 | [diff] [blame] | 1917 | conn_changed = !hci_dev_test_and_set_flag(hdev, |
| 1918 | HCI_CONNECTABLE); |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1919 | else |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 1920 | conn_changed = hci_dev_test_and_clear_flag(hdev, |
| 1921 | HCI_CONNECTABLE); |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1922 | |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1923 | if ((scan & SCAN_INQUIRY)) { |
Marcel Holtmann | 238be78 | 2015-03-13 02:11:06 -0700 | [diff] [blame] | 1924 | discov_changed = !hci_dev_test_and_set_flag(hdev, |
| 1925 | HCI_DISCOVERABLE); |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1926 | } else { |
Marcel Holtmann | a358dc1 | 2015-03-13 02:11:02 -0700 | [diff] [blame] | 1927 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 1928 | discov_changed = hci_dev_test_and_clear_flag(hdev, |
| 1929 | HCI_DISCOVERABLE); |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1930 | } |
| 1931 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1932 | if (!hci_dev_test_flag(hdev, HCI_MGMT)) |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1933 | return; |
| 1934 | |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1935 | if (conn_changed || discov_changed) { |
| 1936 | /* In case this was disabled through mgmt */ |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 1937 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1938 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1939 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1940 | mgmt_update_adv_data(hdev); |
| 1941 | |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1942 | mgmt_new_settings(hdev); |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 1943 | } |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 1944 | } |
| 1945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 1947 | { |
| 1948 | struct hci_dev *hdev; |
| 1949 | struct hci_dev_req dr; |
| 1950 | int err = 0; |
| 1951 | |
| 1952 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 1953 | return -EFAULT; |
| 1954 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1955 | hdev = hci_dev_get(dr.dev_id); |
| 1956 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | return -ENODEV; |
| 1958 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1959 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 1960 | err = -EBUSY; |
| 1961 | goto done; |
| 1962 | } |
| 1963 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1964 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 1965 | err = -EOPNOTSUPP; |
| 1966 | goto done; |
| 1967 | } |
| 1968 | |
Marcel Holtmann | 5b69bef5 | 2013-10-10 10:02:08 -0700 | [diff] [blame] | 1969 | if (hdev->dev_type != HCI_BREDR) { |
| 1970 | err = -EOPNOTSUPP; |
| 1971 | goto done; |
| 1972 | } |
| 1973 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 1974 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 1975 | err = -EOPNOTSUPP; |
| 1976 | goto done; |
| 1977 | } |
| 1978 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | switch (cmd) { |
| 1980 | case HCISETAUTH: |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 1981 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
| 1982 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | break; |
| 1984 | |
| 1985 | case HCISETENCRYPT: |
| 1986 | if (!lmp_encrypt_capable(hdev)) { |
| 1987 | err = -EOPNOTSUPP; |
| 1988 | break; |
| 1989 | } |
| 1990 | |
| 1991 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 1992 | /* Auth must be enabled first */ |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 1993 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
| 1994 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | if (err) |
| 1996 | break; |
| 1997 | } |
| 1998 | |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 1999 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
| 2000 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | break; |
| 2002 | |
| 2003 | case HCISETSCAN: |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 2004 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
| 2005 | HCI_INIT_TIMEOUT); |
Johan Hedberg | 91a668b | 2014-07-09 13:28:26 +0300 | [diff] [blame] | 2006 | |
Johan Hedberg | bc6d2d0 | 2014-07-10 12:09:08 +0300 | [diff] [blame] | 2007 | /* Ensure that the connectable and discoverable states |
| 2008 | * get correctly modified as this was a non-mgmt change. |
Johan Hedberg | 91a668b | 2014-07-09 13:28:26 +0300 | [diff] [blame] | 2009 | */ |
Johan Hedberg | 123abc0 | 2014-07-10 12:09:07 +0300 | [diff] [blame] | 2010 | if (!err) |
| 2011 | hci_update_scan_state(hdev, dr.dev_opt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | break; |
| 2013 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 2014 | case HCISETLINKPOL: |
Johan Hedberg | 01178cd | 2013-03-05 20:37:41 +0200 | [diff] [blame] | 2015 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
| 2016 | HCI_INIT_TIMEOUT); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 2017 | break; |
| 2018 | |
| 2019 | case HCISETLINKMODE: |
| 2020 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 2021 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 2022 | break; |
| 2023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | case HCISETPTYPE: |
| 2025 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 2026 | break; |
| 2027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 2029 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 2030 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | break; |
| 2032 | |
| 2033 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 2034 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 2035 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | break; |
| 2037 | |
| 2038 | default: |
| 2039 | err = -EINVAL; |
| 2040 | break; |
| 2041 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 2042 | |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 2043 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | hci_dev_put(hdev); |
| 2045 | return err; |
| 2046 | } |
| 2047 | |
| 2048 | int hci_get_dev_list(void __user *arg) |
| 2049 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2050 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | struct hci_dev_list_req *dl; |
| 2052 | struct hci_dev_req *dr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | int n = 0, size, err; |
| 2054 | __u16 dev_num; |
| 2055 | |
| 2056 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 2057 | return -EFAULT; |
| 2058 | |
| 2059 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 2060 | return -EINVAL; |
| 2061 | |
| 2062 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 2063 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2064 | dl = kzalloc(size, GFP_KERNEL); |
| 2065 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | return -ENOMEM; |
| 2067 | |
| 2068 | dr = dl->dev_req; |
| 2069 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2070 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2071 | list_for_each_entry(hdev, &hci_dev_list, list) { |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2072 | unsigned long flags = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 2073 | |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2074 | /* When the auto-off is configured it means the transport |
| 2075 | * is running, but in that case still indicate that the |
| 2076 | * device is actually down. |
| 2077 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2078 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2079 | flags &= ~BIT(HCI_UP); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 2080 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | (dr + n)->dev_id = hdev->id; |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2082 | (dr + n)->dev_opt = flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 2083 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | if (++n >= dev_num) |
| 2085 | break; |
| 2086 | } |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2087 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | |
| 2089 | dl->dev_num = n; |
| 2090 | size = sizeof(*dl) + n * sizeof(*dr); |
| 2091 | |
| 2092 | err = copy_to_user(arg, dl, size); |
| 2093 | kfree(dl); |
| 2094 | |
| 2095 | return err ? -EFAULT : 0; |
| 2096 | } |
| 2097 | |
| 2098 | int hci_get_dev_info(void __user *arg) |
| 2099 | { |
| 2100 | struct hci_dev *hdev; |
| 2101 | struct hci_dev_info di; |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2102 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | int err = 0; |
| 2104 | |
| 2105 | if (copy_from_user(&di, arg, sizeof(di))) |
| 2106 | return -EFAULT; |
| 2107 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2108 | hdev = hci_dev_get(di.dev_id); |
| 2109 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | return -ENODEV; |
| 2111 | |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2112 | /* When the auto-off is configured it means the transport |
| 2113 | * is running, but in that case still indicate that the |
| 2114 | * device is actually down. |
| 2115 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2116 | if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2117 | flags = hdev->flags & ~BIT(HCI_UP); |
| 2118 | else |
| 2119 | flags = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 2120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | strcpy(di.name, hdev->name); |
| 2122 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 60f2a3e | 2013-10-01 22:59:20 -0700 | [diff] [blame] | 2123 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
Marcel Holtmann | 2e84d8d | 2014-07-10 13:17:37 +0200 | [diff] [blame] | 2124 | di.flags = flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | di.pkt_type = hdev->pkt_type; |
Johan Hedberg | 572c7f8 | 2012-10-19 20:57:46 +0300 | [diff] [blame] | 2126 | if (lmp_bredr_capable(hdev)) { |
| 2127 | di.acl_mtu = hdev->acl_mtu; |
| 2128 | di.acl_pkts = hdev->acl_pkts; |
| 2129 | di.sco_mtu = hdev->sco_mtu; |
| 2130 | di.sco_pkts = hdev->sco_pkts; |
| 2131 | } else { |
| 2132 | di.acl_mtu = hdev->le_mtu; |
| 2133 | di.acl_pkts = hdev->le_pkts; |
| 2134 | di.sco_mtu = 0; |
| 2135 | di.sco_pkts = 0; |
| 2136 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | di.link_policy = hdev->link_policy; |
| 2138 | di.link_mode = hdev->link_mode; |
| 2139 | |
| 2140 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 2141 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 2142 | |
| 2143 | if (copy_to_user(arg, &di, sizeof(di))) |
| 2144 | err = -EFAULT; |
| 2145 | |
| 2146 | hci_dev_put(hdev); |
| 2147 | |
| 2148 | return err; |
| 2149 | } |
| 2150 | |
| 2151 | /* ---- Interface to HCI drivers ---- */ |
| 2152 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 2153 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 2154 | { |
| 2155 | struct hci_dev *hdev = data; |
| 2156 | |
| 2157 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 2158 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2159 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
Marcel Holtmann | 0736cfa | 2013-08-26 21:40:51 -0700 | [diff] [blame] | 2160 | return -EBUSY; |
| 2161 | |
Johan Hedberg | 5e13036 | 2013-09-13 08:58:17 +0300 | [diff] [blame] | 2162 | if (blocked) { |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 2163 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2164 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && |
| 2165 | !hci_dev_test_flag(hdev, HCI_CONFIG)) |
Johan Hedberg | bf54303 | 2013-09-13 08:58:18 +0300 | [diff] [blame] | 2166 | hci_dev_do_close(hdev); |
Johan Hedberg | 5e13036 | 2013-09-13 08:58:17 +0300 | [diff] [blame] | 2167 | } else { |
Marcel Holtmann | a358dc1 | 2015-03-13 02:11:02 -0700 | [diff] [blame] | 2168 | hci_dev_clear_flag(hdev, HCI_RFKILLED); |
Gustavo Padovan | 1025c04 | 2013-09-27 11:56:14 -0300 | [diff] [blame] | 2169 | } |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 2170 | |
| 2171 | return 0; |
| 2172 | } |
| 2173 | |
| 2174 | static const struct rfkill_ops hci_rfkill_ops = { |
| 2175 | .set_block = hci_rfkill_set_block, |
| 2176 | }; |
| 2177 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2178 | static void hci_power_on(struct work_struct *work) |
| 2179 | { |
| 2180 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
Johan Hedberg | 96570ff | 2013-05-29 09:51:29 +0300 | [diff] [blame] | 2181 | int err; |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2182 | |
| 2183 | BT_DBG("%s", hdev->name); |
| 2184 | |
Johan Hedberg | cbed0ca | 2013-10-01 22:44:49 +0300 | [diff] [blame] | 2185 | err = hci_dev_do_open(hdev); |
Johan Hedberg | 96570ff | 2013-05-29 09:51:29 +0300 | [diff] [blame] | 2186 | if (err < 0) { |
Jaganath Kanakkassery | 3ad6758 | 2014-12-11 11:43:12 +0530 | [diff] [blame] | 2187 | hci_dev_lock(hdev); |
Johan Hedberg | 96570ff | 2013-05-29 09:51:29 +0300 | [diff] [blame] | 2188 | mgmt_set_powered_failed(hdev, err); |
Jaganath Kanakkassery | 3ad6758 | 2014-12-11 11:43:12 +0530 | [diff] [blame] | 2189 | hci_dev_unlock(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2190 | return; |
Johan Hedberg | 96570ff | 2013-05-29 09:51:29 +0300 | [diff] [blame] | 2191 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2192 | |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 2193 | /* During the HCI setup phase, a few error conditions are |
| 2194 | * ignored and they need to be checked now. If they are still |
| 2195 | * valid, it is important to turn the device back off. |
| 2196 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2197 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || |
| 2198 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || |
Marcel Holtmann | a5c8f27 | 2013-10-06 01:08:57 -0700 | [diff] [blame] | 2199 | (hdev->dev_type == HCI_BREDR && |
| 2200 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
| 2201 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { |
Marcel Holtmann | a358dc1 | 2015-03-13 02:11:02 -0700 | [diff] [blame] | 2202 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); |
Johan Hedberg | bf54303 | 2013-09-13 08:58:18 +0300 | [diff] [blame] | 2203 | hci_dev_do_close(hdev); |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2204 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { |
Johan Hedberg | 1920257 | 2013-01-14 22:33:51 +0200 | [diff] [blame] | 2205 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
| 2206 | HCI_AUTO_OFF_TIMEOUT); |
Johan Hedberg | bf54303 | 2013-09-13 08:58:18 +0300 | [diff] [blame] | 2207 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2208 | |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 2209 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 2210 | /* For unconfigured devices, set the HCI_RAW flag |
| 2211 | * so that userspace can easily identify them. |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 2212 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2213 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 2214 | set_bit(HCI_RAW, &hdev->flags); |
Marcel Holtmann | 0602a8a | 2014-07-02 21:30:54 +0200 | [diff] [blame] | 2215 | |
| 2216 | /* For fully configured devices, this will send |
| 2217 | * the Index Added event. For unconfigured devices, |
| 2218 | * it will send Unconfigued Index Added event. |
| 2219 | * |
| 2220 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored |
| 2221 | * and no event will be send. |
| 2222 | */ |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 2223 | mgmt_index_added(hdev); |
Marcel Holtmann | a69d892 | 2015-03-13 02:11:05 -0700 | [diff] [blame] | 2224 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { |
Marcel Holtmann | 5ea234d | 2014-07-06 12:11:16 +0200 | [diff] [blame] | 2225 | /* When the controller is now configured, then it |
| 2226 | * is important to clear the HCI_RAW flag. |
| 2227 | */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 2228 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
Marcel Holtmann | 5ea234d | 2014-07-06 12:11:16 +0200 | [diff] [blame] | 2229 | clear_bit(HCI_RAW, &hdev->flags); |
| 2230 | |
Marcel Holtmann | d603b76 | 2014-07-06 12:11:14 +0200 | [diff] [blame] | 2231 | /* Powering on the controller with HCI_CONFIG set only |
| 2232 | * happens with the transition from unconfigured to |
| 2233 | * configured. This will send the Index Added event. |
| 2234 | */ |
| 2235 | mgmt_index_added(hdev); |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 2236 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2237 | } |
| 2238 | |
| 2239 | static void hci_power_off(struct work_struct *work) |
| 2240 | { |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 2241 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2242 | power_off.work); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2243 | |
| 2244 | BT_DBG("%s", hdev->name); |
| 2245 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 2246 | hci_dev_do_close(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 2247 | } |
| 2248 | |
Marcel Holtmann | c7741d1 | 2015-01-28 11:09:55 -0800 | [diff] [blame] | 2249 | static void hci_error_reset(struct work_struct *work) |
| 2250 | { |
| 2251 | struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); |
| 2252 | |
| 2253 | BT_DBG("%s", hdev->name); |
| 2254 | |
| 2255 | if (hdev->hw_error) |
| 2256 | hdev->hw_error(hdev, hdev->hw_error_code); |
| 2257 | else |
| 2258 | BT_ERR("%s hardware error 0x%2.2x", hdev->name, |
| 2259 | hdev->hw_error_code); |
| 2260 | |
| 2261 | if (hci_dev_do_close(hdev)) |
| 2262 | return; |
| 2263 | |
Marcel Holtmann | c7741d1 | 2015-01-28 11:09:55 -0800 | [diff] [blame] | 2264 | hci_dev_do_open(hdev); |
| 2265 | } |
| 2266 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 2267 | static void hci_discov_off(struct work_struct *work) |
| 2268 | { |
| 2269 | struct hci_dev *hdev; |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 2270 | |
| 2271 | hdev = container_of(work, struct hci_dev, discov_off.work); |
| 2272 | |
| 2273 | BT_DBG("%s", hdev->name); |
| 2274 | |
Marcel Holtmann | d1967ff | 2013-10-15 10:57:40 -0700 | [diff] [blame] | 2275 | mgmt_discoverable_timeout(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 2276 | } |
| 2277 | |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 2278 | static void hci_adv_timeout_expire(struct work_struct *work) |
| 2279 | { |
| 2280 | struct hci_dev *hdev; |
| 2281 | |
| 2282 | hdev = container_of(work, struct hci_dev, adv_instance_expire.work); |
| 2283 | |
| 2284 | BT_DBG("%s", hdev->name); |
| 2285 | |
| 2286 | mgmt_adv_timeout_expired(hdev); |
| 2287 | } |
| 2288 | |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2289 | void hci_uuids_clear(struct hci_dev *hdev) |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 2290 | { |
Johan Hedberg | 4821002 | 2013-01-27 00:31:28 +0200 | [diff] [blame] | 2291 | struct bt_uuid *uuid, *tmp; |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 2292 | |
Johan Hedberg | 4821002 | 2013-01-27 00:31:28 +0200 | [diff] [blame] | 2293 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
| 2294 | list_del(&uuid->list); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 2295 | kfree(uuid); |
| 2296 | } |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 2297 | } |
| 2298 | |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2299 | void hci_link_keys_clear(struct hci_dev *hdev) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2300 | { |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2301 | struct link_key *key; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2302 | |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2303 | list_for_each_entry_rcu(key, &hdev->link_keys, list) { |
| 2304 | list_del_rcu(&key->list); |
| 2305 | kfree_rcu(key, rcu); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2306 | } |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2307 | } |
| 2308 | |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2309 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2310 | { |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2311 | struct smp_ltk *k; |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2312 | |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2313 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
| 2314 | list_del_rcu(&k->list); |
| 2315 | kfree_rcu(k, rcu); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2316 | } |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2317 | } |
| 2318 | |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2319 | void hci_smp_irks_clear(struct hci_dev *hdev) |
| 2320 | { |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2321 | struct smp_irk *k; |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2322 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2323 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
| 2324 | list_del_rcu(&k->list); |
| 2325 | kfree_rcu(k, rcu); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2326 | } |
| 2327 | } |
| 2328 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2329 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 2330 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2331 | struct link_key *k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2332 | |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2333 | rcu_read_lock(); |
| 2334 | list_for_each_entry_rcu(k, &hdev->link_keys, list) { |
| 2335 | if (bacmp(bdaddr, &k->bdaddr) == 0) { |
| 2336 | rcu_read_unlock(); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2337 | return k; |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2338 | } |
| 2339 | } |
| 2340 | rcu_read_unlock(); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2341 | |
| 2342 | return NULL; |
| 2343 | } |
| 2344 | |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2345 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2346 | u8 key_type, u8 old_key_type) |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2347 | { |
| 2348 | /* Legacy key */ |
| 2349 | if (key_type < 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2350 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2351 | |
| 2352 | /* Debug keys are insecure so don't store them persistently */ |
| 2353 | if (key_type == HCI_LK_DEBUG_COMBINATION) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2354 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2355 | |
| 2356 | /* Changed combination key and there's no previous one */ |
| 2357 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2358 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2359 | |
| 2360 | /* Security mode 3 case */ |
| 2361 | if (!conn) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2362 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2363 | |
Johan Hedberg | e3befab | 2014-06-01 16:33:39 +0300 | [diff] [blame] | 2364 | /* BR/EDR key derived using SC from an LE link */ |
| 2365 | if (conn->type == LE_LINK) |
| 2366 | return true; |
| 2367 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2368 | /* Neither local nor remote side had no-bonding as requirement */ |
| 2369 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2370 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2371 | |
| 2372 | /* Local side had dedicated bonding as requirement */ |
| 2373 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2374 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2375 | |
| 2376 | /* Remote side had dedicated bonding as requirement */ |
| 2377 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2378 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2379 | |
| 2380 | /* If none of the above criteria match, then don't store the key |
| 2381 | * persistently */ |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2382 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2383 | } |
| 2384 | |
Johan Hedberg | e804d25 | 2014-07-16 11:42:28 +0300 | [diff] [blame] | 2385 | static u8 ltk_role(u8 type) |
Johan Hedberg | 98a0b84 | 2014-01-30 19:40:00 -0800 | [diff] [blame] | 2386 | { |
Johan Hedberg | e804d25 | 2014-07-16 11:42:28 +0300 | [diff] [blame] | 2387 | if (type == SMP_LTK) |
| 2388 | return HCI_ROLE_MASTER; |
Johan Hedberg | 98a0b84 | 2014-01-30 19:40:00 -0800 | [diff] [blame] | 2389 | |
Johan Hedberg | e804d25 | 2014-07-16 11:42:28 +0300 | [diff] [blame] | 2390 | return HCI_ROLE_SLAVE; |
Johan Hedberg | 98a0b84 | 2014-01-30 19:40:00 -0800 | [diff] [blame] | 2391 | } |
| 2392 | |
Johan Hedberg | f3a73d9 | 2014-05-29 15:02:59 +0300 | [diff] [blame] | 2393 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| 2394 | u8 addr_type, u8 role) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2395 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2396 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2397 | |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2398 | rcu_read_lock(); |
| 2399 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
Johan Hedberg | 5378bc5 | 2014-05-29 14:00:39 +0300 | [diff] [blame] | 2400 | if (addr_type != k->bdaddr_type || bacmp(bdaddr, &k->bdaddr)) |
| 2401 | continue; |
| 2402 | |
Johan Hedberg | 923e241 | 2014-12-03 12:43:39 +0200 | [diff] [blame] | 2403 | if (smp_ltk_is_sc(k) || ltk_role(k->type) == role) { |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2404 | rcu_read_unlock(); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2405 | return k; |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2406 | } |
| 2407 | } |
| 2408 | rcu_read_unlock(); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2409 | |
| 2410 | return NULL; |
| 2411 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2412 | |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2413 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
| 2414 | { |
| 2415 | struct smp_irk *irk; |
| 2416 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2417 | rcu_read_lock(); |
| 2418 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
| 2419 | if (!bacmp(&irk->rpa, rpa)) { |
| 2420 | rcu_read_unlock(); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2421 | return irk; |
| 2422 | } |
| 2423 | } |
| 2424 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2425 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
| 2426 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
| 2427 | bacpy(&irk->rpa, rpa); |
| 2428 | rcu_read_unlock(); |
| 2429 | return irk; |
| 2430 | } |
| 2431 | } |
| 2432 | rcu_read_unlock(); |
| 2433 | |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2434 | return NULL; |
| 2435 | } |
| 2436 | |
| 2437 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| 2438 | u8 addr_type) |
| 2439 | { |
| 2440 | struct smp_irk *irk; |
| 2441 | |
Johan Hedberg | 6cfc998 | 2014-02-18 21:41:35 +0200 | [diff] [blame] | 2442 | /* Identity Address must be public or static random */ |
| 2443 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) |
| 2444 | return NULL; |
| 2445 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2446 | rcu_read_lock(); |
| 2447 | list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2448 | if (addr_type == irk->addr_type && |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2449 | bacmp(bdaddr, &irk->bdaddr) == 0) { |
| 2450 | rcu_read_unlock(); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2451 | return irk; |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2452 | } |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2453 | } |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2454 | rcu_read_unlock(); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2455 | |
| 2456 | return NULL; |
| 2457 | } |
| 2458 | |
Johan Hedberg | 567fa2a | 2014-06-24 13:15:48 +0300 | [diff] [blame] | 2459 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
Johan Hedberg | 7652ff6 | 2014-06-24 13:15:49 +0300 | [diff] [blame] | 2460 | bdaddr_t *bdaddr, u8 *val, u8 type, |
| 2461 | u8 pin_len, bool *persistent) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2462 | { |
| 2463 | struct link_key *key, *old_key; |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 2464 | u8 old_key_type; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2465 | |
| 2466 | old_key = hci_find_link_key(hdev, bdaddr); |
| 2467 | if (old_key) { |
| 2468 | old_key_type = old_key->type; |
| 2469 | key = old_key; |
| 2470 | } else { |
Johan Hedberg | 12adcf3 | 2011-04-28 11:29:00 -0700 | [diff] [blame] | 2471 | old_key_type = conn ? conn->key_type : 0xff; |
Johan Hedberg | 0a14ab4 | 2014-02-19 14:57:43 +0200 | [diff] [blame] | 2472 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2473 | if (!key) |
Johan Hedberg | 567fa2a | 2014-06-24 13:15:48 +0300 | [diff] [blame] | 2474 | return NULL; |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2475 | list_add_rcu(&key->list, &hdev->link_keys); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2476 | } |
| 2477 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 2478 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2479 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2480 | /* Some buggy controller combinations generate a changed |
| 2481 | * combination key for legacy pairing even when there's no |
| 2482 | * previous key */ |
| 2483 | if (type == HCI_LK_CHANGED_COMBINATION && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2484 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2485 | type = HCI_LK_COMBINATION; |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 2486 | if (conn) |
| 2487 | conn->key_type = type; |
| 2488 | } |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 2489 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2490 | bacpy(&key->bdaddr, bdaddr); |
Andrei Emeltchenko | 9b3b446 | 2012-05-23 11:31:20 +0300 | [diff] [blame] | 2491 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2492 | key->pin_len = pin_len; |
| 2493 | |
Waldemar Rymarkiewicz | b6020ba | 2011-04-28 12:07:53 +0200 | [diff] [blame] | 2494 | if (type == HCI_LK_CHANGED_COMBINATION) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2495 | key->type = old_key_type; |
Johan Hedberg | 4748fed | 2011-04-28 11:29:02 -0700 | [diff] [blame] | 2496 | else |
| 2497 | key->type = type; |
| 2498 | |
Johan Hedberg | 7652ff6 | 2014-06-24 13:15:49 +0300 | [diff] [blame] | 2499 | if (persistent) |
| 2500 | *persistent = hci_persistent_key(hdev, conn, type, |
| 2501 | old_key_type); |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 2502 | |
Johan Hedberg | 567fa2a | 2014-06-24 13:15:48 +0300 | [diff] [blame] | 2503 | return key; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2504 | } |
| 2505 | |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2506 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
Johan Hedberg | 35d7027 | 2014-02-19 14:57:47 +0200 | [diff] [blame] | 2507 | u8 addr_type, u8 type, u8 authenticated, |
Marcel Holtmann | fe39c7b | 2014-02-27 16:00:28 -0800 | [diff] [blame] | 2508 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2509 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2510 | struct smp_ltk *key, *old_key; |
Johan Hedberg | e804d25 | 2014-07-16 11:42:28 +0300 | [diff] [blame] | 2511 | u8 role = ltk_role(type); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2512 | |
Johan Hedberg | f3a73d9 | 2014-05-29 15:02:59 +0300 | [diff] [blame] | 2513 | old_key = hci_find_ltk(hdev, bdaddr, addr_type, role); |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2514 | if (old_key) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2515 | key = old_key; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2516 | else { |
Johan Hedberg | 0a14ab4 | 2014-02-19 14:57:43 +0200 | [diff] [blame] | 2517 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2518 | if (!key) |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2519 | return NULL; |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2520 | list_add_rcu(&key->list, &hdev->long_term_keys); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2521 | } |
| 2522 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2523 | bacpy(&key->bdaddr, bdaddr); |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2524 | key->bdaddr_type = addr_type; |
| 2525 | memcpy(key->val, tk, sizeof(key->val)); |
| 2526 | key->authenticated = authenticated; |
| 2527 | key->ediv = ediv; |
Marcel Holtmann | fe39c7b | 2014-02-27 16:00:28 -0800 | [diff] [blame] | 2528 | key->rand = rand; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 2529 | key->enc_size = enc_size; |
| 2530 | key->type = type; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2531 | |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2532 | return key; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 2533 | } |
| 2534 | |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2535 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| 2536 | u8 addr_type, u8 val[16], bdaddr_t *rpa) |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2537 | { |
| 2538 | struct smp_irk *irk; |
| 2539 | |
| 2540 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); |
| 2541 | if (!irk) { |
| 2542 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); |
| 2543 | if (!irk) |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2544 | return NULL; |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2545 | |
| 2546 | bacpy(&irk->bdaddr, bdaddr); |
| 2547 | irk->addr_type = addr_type; |
| 2548 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2549 | list_add_rcu(&irk->list, &hdev->identity_resolving_keys); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2550 | } |
| 2551 | |
| 2552 | memcpy(irk->val, val, 16); |
| 2553 | bacpy(&irk->rpa, rpa); |
| 2554 | |
Johan Hedberg | ca9142b | 2014-02-19 14:57:44 +0200 | [diff] [blame] | 2555 | return irk; |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 2556 | } |
| 2557 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2558 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 2559 | { |
| 2560 | struct link_key *key; |
| 2561 | |
| 2562 | key = hci_find_link_key(hdev, bdaddr); |
| 2563 | if (!key) |
| 2564 | return -ENOENT; |
| 2565 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 2566 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2567 | |
Johan Hedberg | 0378b59 | 2014-11-19 15:22:22 +0200 | [diff] [blame] | 2568 | list_del_rcu(&key->list); |
| 2569 | kfree_rcu(key, rcu); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 2570 | |
| 2571 | return 0; |
| 2572 | } |
| 2573 | |
Johan Hedberg | e0b2b27 | 2014-02-18 17:14:31 +0200 | [diff] [blame] | 2574 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2575 | { |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2576 | struct smp_ltk *k; |
Johan Hedberg | c51ffa0 | 2014-02-18 17:14:33 +0200 | [diff] [blame] | 2577 | int removed = 0; |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2578 | |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2579 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
Johan Hedberg | e0b2b27 | 2014-02-18 17:14:31 +0200 | [diff] [blame] | 2580 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2581 | continue; |
| 2582 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 2583 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2584 | |
Johan Hedberg | 970d0f1 | 2014-11-13 14:37:47 +0200 | [diff] [blame] | 2585 | list_del_rcu(&k->list); |
| 2586 | kfree_rcu(k, rcu); |
Johan Hedberg | c51ffa0 | 2014-02-18 17:14:33 +0200 | [diff] [blame] | 2587 | removed++; |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2588 | } |
| 2589 | |
Johan Hedberg | c51ffa0 | 2014-02-18 17:14:33 +0200 | [diff] [blame] | 2590 | return removed ? 0 : -ENOENT; |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 2591 | } |
| 2592 | |
Johan Hedberg | a7ec733 | 2014-02-18 17:14:35 +0200 | [diff] [blame] | 2593 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
| 2594 | { |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2595 | struct smp_irk *k; |
Johan Hedberg | a7ec733 | 2014-02-18 17:14:35 +0200 | [diff] [blame] | 2596 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2597 | list_for_each_entry_rcu(k, &hdev->identity_resolving_keys, list) { |
Johan Hedberg | a7ec733 | 2014-02-18 17:14:35 +0200 | [diff] [blame] | 2598 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
| 2599 | continue; |
| 2600 | |
| 2601 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
| 2602 | |
Johan Hedberg | adae20c | 2014-11-13 14:37:48 +0200 | [diff] [blame] | 2603 | list_del_rcu(&k->list); |
| 2604 | kfree_rcu(k, rcu); |
Johan Hedberg | a7ec733 | 2014-02-18 17:14:35 +0200 | [diff] [blame] | 2605 | } |
| 2606 | } |
| 2607 | |
Johan Hedberg | 55e76b3 | 2015-03-10 22:34:40 +0200 | [diff] [blame] | 2608 | bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
| 2609 | { |
| 2610 | struct smp_ltk *k; |
Johan Hedberg | 4ba9faf | 2015-03-11 10:52:08 +0200 | [diff] [blame] | 2611 | struct smp_irk *irk; |
Johan Hedberg | 55e76b3 | 2015-03-10 22:34:40 +0200 | [diff] [blame] | 2612 | u8 addr_type; |
| 2613 | |
| 2614 | if (type == BDADDR_BREDR) { |
| 2615 | if (hci_find_link_key(hdev, bdaddr)) |
| 2616 | return true; |
| 2617 | return false; |
| 2618 | } |
| 2619 | |
| 2620 | /* Convert to HCI addr type which struct smp_ltk uses */ |
| 2621 | if (type == BDADDR_LE_PUBLIC) |
| 2622 | addr_type = ADDR_LE_DEV_PUBLIC; |
| 2623 | else |
| 2624 | addr_type = ADDR_LE_DEV_RANDOM; |
| 2625 | |
Johan Hedberg | 4ba9faf | 2015-03-11 10:52:08 +0200 | [diff] [blame] | 2626 | irk = hci_get_irk(hdev, bdaddr, addr_type); |
| 2627 | if (irk) { |
| 2628 | bdaddr = &irk->bdaddr; |
| 2629 | addr_type = irk->addr_type; |
| 2630 | } |
| 2631 | |
Johan Hedberg | 55e76b3 | 2015-03-10 22:34:40 +0200 | [diff] [blame] | 2632 | rcu_read_lock(); |
| 2633 | list_for_each_entry_rcu(k, &hdev->long_term_keys, list) { |
Johan Hedberg | 87c8b28 | 2015-03-11 08:55:51 +0200 | [diff] [blame] | 2634 | if (k->bdaddr_type == addr_type && !bacmp(bdaddr, &k->bdaddr)) { |
| 2635 | rcu_read_unlock(); |
Johan Hedberg | 55e76b3 | 2015-03-10 22:34:40 +0200 | [diff] [blame] | 2636 | return true; |
Johan Hedberg | 87c8b28 | 2015-03-11 08:55:51 +0200 | [diff] [blame] | 2637 | } |
Johan Hedberg | 55e76b3 | 2015-03-10 22:34:40 +0200 | [diff] [blame] | 2638 | } |
| 2639 | rcu_read_unlock(); |
| 2640 | |
| 2641 | return false; |
| 2642 | } |
| 2643 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2644 | /* HCI command timer function */ |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 2645 | static void hci_cmd_timeout(struct work_struct *work) |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2646 | { |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 2647 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
| 2648 | cmd_timer.work); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2649 | |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 2650 | if (hdev->sent_cmd) { |
| 2651 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; |
| 2652 | u16 opcode = __le16_to_cpu(sent->opcode); |
| 2653 | |
| 2654 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); |
| 2655 | } else { |
| 2656 | BT_ERR("%s command tx timeout", hdev->name); |
| 2657 | } |
| 2658 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2659 | atomic_set(&hdev->cmd_cnt, 1); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2660 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2661 | } |
| 2662 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2663 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2664 | bdaddr_t *bdaddr, u8 bdaddr_type) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2665 | { |
| 2666 | struct oob_data *data; |
| 2667 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2668 | list_for_each_entry(data, &hdev->remote_oob_data, list) { |
| 2669 | if (bacmp(bdaddr, &data->bdaddr) != 0) |
| 2670 | continue; |
| 2671 | if (data->bdaddr_type != bdaddr_type) |
| 2672 | continue; |
| 2673 | return data; |
| 2674 | } |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2675 | |
| 2676 | return NULL; |
| 2677 | } |
| 2678 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2679 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| 2680 | u8 bdaddr_type) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2681 | { |
| 2682 | struct oob_data *data; |
| 2683 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2684 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2685 | if (!data) |
| 2686 | return -ENOENT; |
| 2687 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2688 | BT_DBG("%s removing %pMR (%u)", hdev->name, bdaddr, bdaddr_type); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2689 | |
| 2690 | list_del(&data->list); |
| 2691 | kfree(data); |
| 2692 | |
| 2693 | return 0; |
| 2694 | } |
| 2695 | |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2696 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2697 | { |
| 2698 | struct oob_data *data, *n; |
| 2699 | |
| 2700 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 2701 | list_del(&data->list); |
| 2702 | kfree(data); |
| 2703 | } |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2704 | } |
| 2705 | |
Marcel Holtmann | 0798872 | 2014-01-10 02:07:29 -0800 | [diff] [blame] | 2706 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2707 | u8 bdaddr_type, u8 *hash192, u8 *rand192, |
Johan Hedberg | 81328d5 | 2014-10-26 20:33:47 +0100 | [diff] [blame] | 2708 | u8 *hash256, u8 *rand256) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2709 | { |
| 2710 | struct oob_data *data; |
| 2711 | |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2712 | data = hci_find_remote_oob_data(hdev, bdaddr, bdaddr_type); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2713 | if (!data) { |
Johan Hedberg | 0a14ab4 | 2014-02-19 14:57:43 +0200 | [diff] [blame] | 2714 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2715 | if (!data) |
| 2716 | return -ENOMEM; |
| 2717 | |
| 2718 | bacpy(&data->bdaddr, bdaddr); |
Johan Hedberg | 6928a92 | 2014-10-26 20:46:09 +0100 | [diff] [blame] | 2719 | data->bdaddr_type = bdaddr_type; |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2720 | list_add(&data->list, &hdev->remote_oob_data); |
| 2721 | } |
| 2722 | |
Johan Hedberg | 81328d5 | 2014-10-26 20:33:47 +0100 | [diff] [blame] | 2723 | if (hash192 && rand192) { |
| 2724 | memcpy(data->hash192, hash192, sizeof(data->hash192)); |
| 2725 | memcpy(data->rand192, rand192, sizeof(data->rand192)); |
Marcel Holtmann | f7697b1 | 2015-01-30 23:20:55 -0800 | [diff] [blame] | 2726 | if (hash256 && rand256) |
| 2727 | data->present = 0x03; |
Johan Hedberg | 81328d5 | 2014-10-26 20:33:47 +0100 | [diff] [blame] | 2728 | } else { |
| 2729 | memset(data->hash192, 0, sizeof(data->hash192)); |
| 2730 | memset(data->rand192, 0, sizeof(data->rand192)); |
Marcel Holtmann | f7697b1 | 2015-01-30 23:20:55 -0800 | [diff] [blame] | 2731 | if (hash256 && rand256) |
| 2732 | data->present = 0x02; |
| 2733 | else |
| 2734 | data->present = 0x00; |
Marcel Holtmann | 0798872 | 2014-01-10 02:07:29 -0800 | [diff] [blame] | 2735 | } |
| 2736 | |
Johan Hedberg | 81328d5 | 2014-10-26 20:33:47 +0100 | [diff] [blame] | 2737 | if (hash256 && rand256) { |
| 2738 | memcpy(data->hash256, hash256, sizeof(data->hash256)); |
| 2739 | memcpy(data->rand256, rand256, sizeof(data->rand256)); |
| 2740 | } else { |
| 2741 | memset(data->hash256, 0, sizeof(data->hash256)); |
| 2742 | memset(data->rand256, 0, sizeof(data->rand256)); |
Marcel Holtmann | f7697b1 | 2015-01-30 23:20:55 -0800 | [diff] [blame] | 2743 | if (hash192 && rand192) |
| 2744 | data->present = 0x01; |
Johan Hedberg | 81328d5 | 2014-10-26 20:33:47 +0100 | [diff] [blame] | 2745 | } |
Marcel Holtmann | 0798872 | 2014-01-10 02:07:29 -0800 | [diff] [blame] | 2746 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 2747 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 2748 | |
| 2749 | return 0; |
| 2750 | } |
| 2751 | |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2752 | /* This function requires the caller holds hdev->lock */ |
| 2753 | struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance) |
| 2754 | { |
| 2755 | struct adv_info *adv_instance; |
| 2756 | |
| 2757 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) { |
| 2758 | if (adv_instance->instance == instance) |
| 2759 | return adv_instance; |
| 2760 | } |
| 2761 | |
| 2762 | return NULL; |
| 2763 | } |
| 2764 | |
| 2765 | /* This function requires the caller holds hdev->lock */ |
| 2766 | struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance) { |
| 2767 | struct adv_info *cur_instance; |
| 2768 | |
| 2769 | cur_instance = hci_find_adv_instance(hdev, instance); |
| 2770 | if (!cur_instance) |
| 2771 | return NULL; |
| 2772 | |
| 2773 | if (cur_instance == list_last_entry(&hdev->adv_instances, |
| 2774 | struct adv_info, list)) |
| 2775 | return list_first_entry(&hdev->adv_instances, |
| 2776 | struct adv_info, list); |
| 2777 | else |
| 2778 | return list_next_entry(cur_instance, list); |
| 2779 | } |
| 2780 | |
| 2781 | /* This function requires the caller holds hdev->lock */ |
| 2782 | int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance) |
| 2783 | { |
| 2784 | struct adv_info *adv_instance; |
| 2785 | |
| 2786 | adv_instance = hci_find_adv_instance(hdev, instance); |
| 2787 | if (!adv_instance) |
| 2788 | return -ENOENT; |
| 2789 | |
| 2790 | BT_DBG("%s removing %dMR", hdev->name, instance); |
| 2791 | |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 2792 | if (hdev->cur_adv_instance == instance && hdev->adv_instance_timeout) { |
| 2793 | cancel_delayed_work(&hdev->adv_instance_expire); |
| 2794 | hdev->adv_instance_timeout = 0; |
| 2795 | } |
| 2796 | |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2797 | list_del(&adv_instance->list); |
| 2798 | kfree(adv_instance); |
| 2799 | |
| 2800 | hdev->adv_instance_cnt--; |
| 2801 | |
| 2802 | return 0; |
| 2803 | } |
| 2804 | |
| 2805 | /* This function requires the caller holds hdev->lock */ |
| 2806 | void hci_adv_instances_clear(struct hci_dev *hdev) |
| 2807 | { |
| 2808 | struct adv_info *adv_instance, *n; |
| 2809 | |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 2810 | if (hdev->adv_instance_timeout) { |
| 2811 | cancel_delayed_work(&hdev->adv_instance_expire); |
| 2812 | hdev->adv_instance_timeout = 0; |
| 2813 | } |
| 2814 | |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2815 | list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { |
| 2816 | list_del(&adv_instance->list); |
| 2817 | kfree(adv_instance); |
| 2818 | } |
| 2819 | |
| 2820 | hdev->adv_instance_cnt = 0; |
| 2821 | } |
| 2822 | |
| 2823 | /* This function requires the caller holds hdev->lock */ |
| 2824 | int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, |
| 2825 | u16 adv_data_len, u8 *adv_data, |
| 2826 | u16 scan_rsp_len, u8 *scan_rsp_data, |
| 2827 | u16 timeout, u16 duration) |
| 2828 | { |
| 2829 | struct adv_info *adv_instance; |
| 2830 | |
| 2831 | adv_instance = hci_find_adv_instance(hdev, instance); |
| 2832 | if (adv_instance) { |
| 2833 | memset(adv_instance->adv_data, 0, |
| 2834 | sizeof(adv_instance->adv_data)); |
| 2835 | memset(adv_instance->scan_rsp_data, 0, |
| 2836 | sizeof(adv_instance->scan_rsp_data)); |
| 2837 | } else { |
| 2838 | if (hdev->adv_instance_cnt >= HCI_MAX_ADV_INSTANCES || |
| 2839 | instance < 1 || instance > HCI_MAX_ADV_INSTANCES) |
| 2840 | return -EOVERFLOW; |
| 2841 | |
Johan Hedberg | 39ecfad | 2015-06-18 20:50:08 +0300 | [diff] [blame] | 2842 | adv_instance = kzalloc(sizeof(*adv_instance), GFP_KERNEL); |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2843 | if (!adv_instance) |
| 2844 | return -ENOMEM; |
| 2845 | |
Florian Grandel | fffd38b | 2015-06-18 03:16:47 +0200 | [diff] [blame] | 2846 | adv_instance->pending = true; |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2847 | adv_instance->instance = instance; |
| 2848 | list_add(&adv_instance->list, &hdev->adv_instances); |
| 2849 | hdev->adv_instance_cnt++; |
| 2850 | } |
| 2851 | |
| 2852 | adv_instance->flags = flags; |
| 2853 | adv_instance->adv_data_len = adv_data_len; |
| 2854 | adv_instance->scan_rsp_len = scan_rsp_len; |
| 2855 | |
| 2856 | if (adv_data_len) |
| 2857 | memcpy(adv_instance->adv_data, adv_data, adv_data_len); |
| 2858 | |
| 2859 | if (scan_rsp_len) |
| 2860 | memcpy(adv_instance->scan_rsp_data, |
| 2861 | scan_rsp_data, scan_rsp_len); |
| 2862 | |
| 2863 | adv_instance->timeout = timeout; |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 2864 | adv_instance->remaining_time = timeout; |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 2865 | |
| 2866 | if (duration == 0) |
| 2867 | adv_instance->duration = HCI_DEFAULT_ADV_DURATION; |
| 2868 | else |
| 2869 | adv_instance->duration = duration; |
| 2870 | |
| 2871 | BT_DBG("%s for %dMR", hdev->name, instance); |
| 2872 | |
| 2873 | return 0; |
| 2874 | } |
| 2875 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2876 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2877 | bdaddr_t *bdaddr, u8 type) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2878 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2879 | struct bdaddr_list *b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2880 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2881 | list_for_each_entry(b, bdaddr_list, list) { |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2882 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2883 | return b; |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2884 | } |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2885 | |
| 2886 | return NULL; |
| 2887 | } |
| 2888 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2889 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2890 | { |
| 2891 | struct list_head *p, *n; |
| 2892 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2893 | list_for_each_safe(p, n, bdaddr_list) { |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2894 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2895 | |
| 2896 | list_del(p); |
| 2897 | kfree(b); |
| 2898 | } |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2899 | } |
| 2900 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2901 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2902 | { |
| 2903 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2904 | |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2905 | if (!bacmp(bdaddr, BDADDR_ANY)) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2906 | return -EBADF; |
| 2907 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2908 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 2909 | return -EEXIST; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2910 | |
Johan Hedberg | 27f70f3 | 2014-07-21 10:50:06 +0300 | [diff] [blame] | 2911 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 2912 | if (!entry) |
| 2913 | return -ENOMEM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2914 | |
| 2915 | bacpy(&entry->bdaddr, bdaddr); |
Marcel Holtmann | b9ee0a7 | 2013-10-17 17:24:13 -0700 | [diff] [blame] | 2916 | entry->bdaddr_type = type; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 2917 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2918 | list_add(&entry->list, list); |
Marcel Holtmann | d2ab0ac | 2014-02-27 20:37:30 -0800 | [diff] [blame] | 2919 | |
| 2920 | return 0; |
| 2921 | } |
| 2922 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2923 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
Marcel Holtmann | d2ab0ac | 2014-02-27 20:37:30 -0800 | [diff] [blame] | 2924 | { |
| 2925 | struct bdaddr_list *entry; |
| 2926 | |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2927 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2928 | hci_bdaddr_list_clear(list); |
Johan Hedberg | 35f7498 | 2014-02-18 17:14:32 +0200 | [diff] [blame] | 2929 | return 0; |
| 2930 | } |
Marcel Holtmann | d2ab0ac | 2014-02-27 20:37:30 -0800 | [diff] [blame] | 2931 | |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 2932 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
Marcel Holtmann | d2ab0ac | 2014-02-27 20:37:30 -0800 | [diff] [blame] | 2933 | if (!entry) |
| 2934 | return -ENOENT; |
| 2935 | |
| 2936 | list_del(&entry->list); |
| 2937 | kfree(entry); |
| 2938 | |
| 2939 | return 0; |
| 2940 | } |
| 2941 | |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2942 | /* This function requires the caller holds hdev->lock */ |
| 2943 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, |
| 2944 | bdaddr_t *addr, u8 addr_type) |
| 2945 | { |
| 2946 | struct hci_conn_params *params; |
| 2947 | |
| 2948 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
| 2949 | if (bacmp(¶ms->addr, addr) == 0 && |
| 2950 | params->addr_type == addr_type) { |
| 2951 | return params; |
| 2952 | } |
| 2953 | } |
| 2954 | |
| 2955 | return NULL; |
| 2956 | } |
| 2957 | |
| 2958 | /* This function requires the caller holds hdev->lock */ |
Johan Hedberg | 501f882 | 2014-07-04 12:37:26 +0300 | [diff] [blame] | 2959 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
| 2960 | bdaddr_t *addr, u8 addr_type) |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2961 | { |
Johan Hedberg | 912b42e | 2014-07-03 19:33:49 +0300 | [diff] [blame] | 2962 | struct hci_conn_params *param; |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2963 | |
Johan Hedberg | 501f882 | 2014-07-04 12:37:26 +0300 | [diff] [blame] | 2964 | list_for_each_entry(param, list, action) { |
Johan Hedberg | 912b42e | 2014-07-03 19:33:49 +0300 | [diff] [blame] | 2965 | if (bacmp(¶m->addr, addr) == 0 && |
| 2966 | param->addr_type == addr_type) |
| 2967 | return param; |
Marcel Holtmann | 4b10966 | 2014-06-29 13:41:49 +0200 | [diff] [blame] | 2968 | } |
| 2969 | |
| 2970 | return NULL; |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2971 | } |
| 2972 | |
| 2973 | /* This function requires the caller holds hdev->lock */ |
Marcel Holtmann | 51d167c | 2014-07-01 12:11:04 +0200 | [diff] [blame] | 2974 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
| 2975 | bdaddr_t *addr, u8 addr_type) |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2976 | { |
| 2977 | struct hci_conn_params *params; |
| 2978 | |
| 2979 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
Andre Guedes | cef952c | 2014-02-26 20:21:49 -0300 | [diff] [blame] | 2980 | if (params) |
Marcel Holtmann | 51d167c | 2014-07-01 12:11:04 +0200 | [diff] [blame] | 2981 | return params; |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2982 | |
| 2983 | params = kzalloc(sizeof(*params), GFP_KERNEL); |
| 2984 | if (!params) { |
| 2985 | BT_ERR("Out of memory"); |
Marcel Holtmann | 51d167c | 2014-07-01 12:11:04 +0200 | [diff] [blame] | 2986 | return NULL; |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 2987 | } |
| 2988 | |
| 2989 | bacpy(¶ms->addr, addr); |
| 2990 | params->addr_type = addr_type; |
Andre Guedes | cef952c | 2014-02-26 20:21:49 -0300 | [diff] [blame] | 2991 | |
| 2992 | list_add(¶ms->list, &hdev->le_conn_params); |
Johan Hedberg | 93450c7 | 2014-07-04 12:37:17 +0300 | [diff] [blame] | 2993 | INIT_LIST_HEAD(¶ms->action); |
Andre Guedes | cef952c | 2014-02-26 20:21:49 -0300 | [diff] [blame] | 2994 | |
Marcel Holtmann | bf5b3c8 | 2014-06-30 12:34:39 +0200 | [diff] [blame] | 2995 | params->conn_min_interval = hdev->le_conn_min_interval; |
| 2996 | params->conn_max_interval = hdev->le_conn_max_interval; |
| 2997 | params->conn_latency = hdev->le_conn_latency; |
| 2998 | params->supervision_timeout = hdev->le_supv_timeout; |
| 2999 | params->auto_connect = HCI_AUTO_CONN_DISABLED; |
| 3000 | |
| 3001 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
| 3002 | |
Marcel Holtmann | 51d167c | 2014-07-01 12:11:04 +0200 | [diff] [blame] | 3003 | return params; |
Marcel Holtmann | bf5b3c8 | 2014-06-30 12:34:39 +0200 | [diff] [blame] | 3004 | } |
| 3005 | |
Johan Hedberg | f6c6324 | 2014-08-15 21:06:59 +0300 | [diff] [blame] | 3006 | static void hci_conn_params_free(struct hci_conn_params *params) |
| 3007 | { |
| 3008 | if (params->conn) { |
| 3009 | hci_conn_drop(params->conn); |
| 3010 | hci_conn_put(params->conn); |
| 3011 | } |
| 3012 | |
| 3013 | list_del(¶ms->action); |
| 3014 | list_del(¶ms->list); |
| 3015 | kfree(params); |
| 3016 | } |
| 3017 | |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3018 | /* This function requires the caller holds hdev->lock */ |
| 3019 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) |
| 3020 | { |
| 3021 | struct hci_conn_params *params; |
| 3022 | |
| 3023 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
| 3024 | if (!params) |
| 3025 | return; |
| 3026 | |
Johan Hedberg | f6c6324 | 2014-08-15 21:06:59 +0300 | [diff] [blame] | 3027 | hci_conn_params_free(params); |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3028 | |
Johan Hedberg | 95305ba | 2014-07-04 12:37:21 +0300 | [diff] [blame] | 3029 | hci_update_background_scan(hdev); |
| 3030 | |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3031 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
| 3032 | } |
| 3033 | |
| 3034 | /* This function requires the caller holds hdev->lock */ |
Johan Hedberg | 55af49a | 2014-07-02 17:37:26 +0300 | [diff] [blame] | 3035 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3036 | { |
| 3037 | struct hci_conn_params *params, *tmp; |
| 3038 | |
| 3039 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { |
Johan Hedberg | 55af49a | 2014-07-02 17:37:26 +0300 | [diff] [blame] | 3040 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
| 3041 | continue; |
Jakub Pawlowski | f75113a | 2015-08-07 20:22:53 +0200 | [diff] [blame] | 3042 | |
| 3043 | /* If trying to estabilish one time connection to disabled |
| 3044 | * device, leave the params, but mark them as just once. |
| 3045 | */ |
| 3046 | if (params->explicit_connect) { |
| 3047 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; |
| 3048 | continue; |
| 3049 | } |
| 3050 | |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3051 | list_del(¶ms->list); |
| 3052 | kfree(params); |
| 3053 | } |
| 3054 | |
Johan Hedberg | 55af49a | 2014-07-02 17:37:26 +0300 | [diff] [blame] | 3055 | BT_DBG("All LE disabled connection parameters were removed"); |
| 3056 | } |
| 3057 | |
| 3058 | /* This function requires the caller holds hdev->lock */ |
Johan Hedberg | 373110c | 2014-07-02 17:37:25 +0300 | [diff] [blame] | 3059 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3060 | { |
| 3061 | struct hci_conn_params *params, *tmp; |
| 3062 | |
Johan Hedberg | f6c6324 | 2014-08-15 21:06:59 +0300 | [diff] [blame] | 3063 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) |
| 3064 | hci_conn_params_free(params); |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3065 | |
Johan Hedberg | a2f41a8 | 2014-07-04 12:37:19 +0300 | [diff] [blame] | 3066 | hci_update_background_scan(hdev); |
Marcel Holtmann | 1089b67 | 2014-06-29 13:41:50 +0200 | [diff] [blame] | 3067 | |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3068 | BT_DBG("All LE connection parameters were removed"); |
| 3069 | } |
| 3070 | |
Marcel Holtmann | 1904a85 | 2015-01-11 13:50:44 -0800 | [diff] [blame] | 3071 | static void inquiry_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3072 | { |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3073 | if (status) { |
| 3074 | BT_ERR("Failed to start inquiry: status %d", status); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3075 | |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3076 | hci_dev_lock(hdev); |
| 3077 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| 3078 | hci_dev_unlock(hdev); |
| 3079 | return; |
| 3080 | } |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3081 | } |
| 3082 | |
Marcel Holtmann | 1904a85 | 2015-01-11 13:50:44 -0800 | [diff] [blame] | 3083 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status, |
| 3084 | u16 opcode) |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3085 | { |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3086 | /* General inquiry access code (GIAC) */ |
| 3087 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3088 | struct hci_cp_inquiry cp; |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3089 | int err; |
| 3090 | |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3091 | if (status) { |
| 3092 | BT_ERR("Failed to disable LE scanning: status %d", status); |
| 3093 | return; |
Andre Guedes | 7dbfac1 | 2012-03-15 16:52:07 -0300 | [diff] [blame] | 3094 | } |
| 3095 | |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 3096 | hdev->discovery.scan_start = 0; |
| 3097 | |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3098 | switch (hdev->discovery.type) { |
| 3099 | case DISCOV_TYPE_LE: |
| 3100 | hci_dev_lock(hdev); |
| 3101 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); |
| 3102 | hci_dev_unlock(hdev); |
| 3103 | break; |
| 3104 | |
| 3105 | case DISCOV_TYPE_INTERLEAVED: |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3106 | hci_dev_lock(hdev); |
| 3107 | |
Jakub Pawlowski | 07d2334 | 2015-03-17 09:04:14 -0700 | [diff] [blame] | 3108 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, |
| 3109 | &hdev->quirks)) { |
| 3110 | /* If we were running LE only scan, change discovery |
| 3111 | * state. If we were running both LE and BR/EDR inquiry |
| 3112 | * simultaneously, and BR/EDR inquiry is already |
| 3113 | * finished, stop discovery, otherwise BR/EDR inquiry |
Wesley Kuo | 177d050 | 2015-05-13 10:33:15 +0800 | [diff] [blame] | 3114 | * will stop discovery when finished. If we will resolve |
| 3115 | * remote device name, do not change discovery state. |
Jakub Pawlowski | 07d2334 | 2015-03-17 09:04:14 -0700 | [diff] [blame] | 3116 | */ |
Wesley Kuo | 177d050 | 2015-05-13 10:33:15 +0800 | [diff] [blame] | 3117 | if (!test_bit(HCI_INQUIRY, &hdev->flags) && |
| 3118 | hdev->discovery.state != DISCOVERY_RESOLVING) |
Jakub Pawlowski | 07d2334 | 2015-03-17 09:04:14 -0700 | [diff] [blame] | 3119 | hci_discovery_set_state(hdev, |
| 3120 | DISCOVERY_STOPPED); |
| 3121 | } else { |
Johan Hedberg | baf880a | 2015-03-21 08:02:23 +0200 | [diff] [blame] | 3122 | struct hci_request req; |
| 3123 | |
Jakub Pawlowski | 07d2334 | 2015-03-17 09:04:14 -0700 | [diff] [blame] | 3124 | hci_inquiry_cache_flush(hdev); |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3125 | |
Johan Hedberg | baf880a | 2015-03-21 08:02:23 +0200 | [diff] [blame] | 3126 | hci_req_init(&req, hdev); |
| 3127 | |
| 3128 | memset(&cp, 0, sizeof(cp)); |
| 3129 | memcpy(&cp.lap, lap, sizeof(cp.lap)); |
| 3130 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; |
| 3131 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
| 3132 | |
Jakub Pawlowski | 07d2334 | 2015-03-17 09:04:14 -0700 | [diff] [blame] | 3133 | err = hci_req_run(&req, inquiry_complete); |
| 3134 | if (err) { |
| 3135 | BT_ERR("Inquiry request failed: err %d", err); |
| 3136 | hci_discovery_set_state(hdev, |
| 3137 | DISCOVERY_STOPPED); |
| 3138 | } |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3139 | } |
| 3140 | |
| 3141 | hci_dev_unlock(hdev); |
| 3142 | break; |
| 3143 | } |
Andre Guedes | 7dbfac1 | 2012-03-15 16:52:07 -0300 | [diff] [blame] | 3144 | } |
| 3145 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3146 | static void le_scan_disable_work(struct work_struct *work) |
| 3147 | { |
| 3148 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 3149 | le_scan_disable.work); |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3150 | struct hci_request req; |
| 3151 | int err; |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3152 | |
| 3153 | BT_DBG("%s", hdev->name); |
| 3154 | |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 3155 | cancel_delayed_work_sync(&hdev->le_scan_restart); |
| 3156 | |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3157 | hci_req_init(&req, hdev); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3158 | |
Andre Guedes | b1efcc2 | 2014-02-26 20:21:40 -0300 | [diff] [blame] | 3159 | hci_req_add_le_scan_disable(&req); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 3160 | |
Andre Guedes | 4c87eaa | 2013-04-30 15:29:32 -0300 | [diff] [blame] | 3161 | err = hci_req_run(&req, le_scan_disable_work_complete); |
| 3162 | if (err) |
| 3163 | BT_ERR("Disable LE scanning request failed: err %d", err); |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 3164 | } |
| 3165 | |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 3166 | static void le_scan_restart_work_complete(struct hci_dev *hdev, u8 status, |
| 3167 | u16 opcode) |
| 3168 | { |
| 3169 | unsigned long timeout, duration, scan_start, now; |
| 3170 | |
| 3171 | BT_DBG("%s", hdev->name); |
| 3172 | |
| 3173 | if (status) { |
| 3174 | BT_ERR("Failed to restart LE scan: status %d", status); |
| 3175 | return; |
| 3176 | } |
| 3177 | |
| 3178 | if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) || |
| 3179 | !hdev->discovery.scan_start) |
| 3180 | return; |
| 3181 | |
| 3182 | /* When the scan was started, hdev->le_scan_disable has been queued |
| 3183 | * after duration from scan_start. During scan restart this job |
| 3184 | * has been canceled, and we need to queue it again after proper |
| 3185 | * timeout, to make sure that scan does not run indefinitely. |
| 3186 | */ |
| 3187 | duration = hdev->discovery.scan_duration; |
| 3188 | scan_start = hdev->discovery.scan_start; |
| 3189 | now = jiffies; |
| 3190 | if (now - scan_start <= duration) { |
| 3191 | int elapsed; |
| 3192 | |
| 3193 | if (now >= scan_start) |
| 3194 | elapsed = now - scan_start; |
| 3195 | else |
| 3196 | elapsed = ULONG_MAX - scan_start + now; |
| 3197 | |
| 3198 | timeout = duration - elapsed; |
| 3199 | } else { |
| 3200 | timeout = 0; |
| 3201 | } |
| 3202 | queue_delayed_work(hdev->workqueue, |
| 3203 | &hdev->le_scan_disable, timeout); |
| 3204 | } |
| 3205 | |
| 3206 | static void le_scan_restart_work(struct work_struct *work) |
| 3207 | { |
| 3208 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
| 3209 | le_scan_restart.work); |
| 3210 | struct hci_request req; |
| 3211 | struct hci_cp_le_set_scan_enable cp; |
| 3212 | int err; |
| 3213 | |
| 3214 | BT_DBG("%s", hdev->name); |
| 3215 | |
| 3216 | /* If controller is not scanning we are done. */ |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 3217 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 3218 | return; |
| 3219 | |
| 3220 | hci_req_init(&req, hdev); |
| 3221 | |
| 3222 | hci_req_add_le_scan_disable(&req); |
| 3223 | |
| 3224 | memset(&cp, 0, sizeof(cp)); |
| 3225 | cp.enable = LE_SCAN_ENABLE; |
| 3226 | cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; |
| 3227 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 3228 | |
| 3229 | err = hci_req_run(&req, le_scan_restart_work_complete); |
| 3230 | if (err) |
| 3231 | BT_ERR("Restart LE scan request failed: err %d", err); |
| 3232 | } |
| 3233 | |
Johan Hedberg | a1f4c31 | 2014-02-27 14:05:41 +0200 | [diff] [blame] | 3234 | /* Copy the Identity Address of the controller. |
| 3235 | * |
| 3236 | * If the controller has a public BD_ADDR, then by default use that one. |
| 3237 | * If this is a LE only controller without a public address, default to |
| 3238 | * the static random address. |
| 3239 | * |
| 3240 | * For debugging purposes it is possible to force controllers with a |
| 3241 | * public address to use the static random address instead. |
Marcel Holtmann | 50b5b95 | 2014-12-19 23:05:35 +0100 | [diff] [blame] | 3242 | * |
| 3243 | * In case BR/EDR has been disabled on a dual-mode controller and |
| 3244 | * userspace has configured a static address, then that address |
| 3245 | * becomes the identity address instead of the public BR/EDR address. |
Johan Hedberg | a1f4c31 | 2014-02-27 14:05:41 +0200 | [diff] [blame] | 3246 | */ |
| 3247 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| 3248 | u8 *bdaddr_type) |
| 3249 | { |
Marcel Holtmann | b7cb93e | 2015-03-13 10:20:35 -0700 | [diff] [blame] | 3250 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || |
Marcel Holtmann | 50b5b95 | 2014-12-19 23:05:35 +0100 | [diff] [blame] | 3251 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 3252 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && |
Marcel Holtmann | 50b5b95 | 2014-12-19 23:05:35 +0100 | [diff] [blame] | 3253 | bacmp(&hdev->static_addr, BDADDR_ANY))) { |
Johan Hedberg | a1f4c31 | 2014-02-27 14:05:41 +0200 | [diff] [blame] | 3254 | bacpy(bdaddr, &hdev->static_addr); |
| 3255 | *bdaddr_type = ADDR_LE_DEV_RANDOM; |
| 3256 | } else { |
| 3257 | bacpy(bdaddr, &hdev->bdaddr); |
| 3258 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; |
| 3259 | } |
| 3260 | } |
| 3261 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 3262 | /* Alloc HCI device */ |
| 3263 | struct hci_dev *hci_alloc_dev(void) |
| 3264 | { |
| 3265 | struct hci_dev *hdev; |
| 3266 | |
Johan Hedberg | 27f70f3 | 2014-07-21 10:50:06 +0300 | [diff] [blame] | 3267 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 3268 | if (!hdev) |
| 3269 | return NULL; |
| 3270 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3271 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
| 3272 | hdev->esco_type = (ESCO_HV1); |
| 3273 | hdev->link_mode = (HCI_LM_ACCEPT); |
Marcel Holtmann | b4cb9fb | 2013-10-14 13:56:16 -0700 | [diff] [blame] | 3274 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
| 3275 | hdev->io_capability = 0x03; /* No Input No Output */ |
Marcel Holtmann | 96c2103 | 2014-07-02 11:30:51 +0200 | [diff] [blame] | 3276 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
Johan Hedberg | bbaf444 | 2012-11-08 01:22:59 +0100 | [diff] [blame] | 3277 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
| 3278 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 3279 | hdev->adv_instance_cnt = 0; |
| 3280 | hdev->cur_adv_instance = 0x00; |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 3281 | hdev->adv_instance_timeout = 0; |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3282 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3283 | hdev->sniff_max_interval = 800; |
| 3284 | hdev->sniff_min_interval = 80; |
| 3285 | |
Marcel Holtmann | 3f959d4 | 2014-02-20 11:55:56 -0800 | [diff] [blame] | 3286 | hdev->le_adv_channel_map = 0x07; |
Georg Lukas | 628531c | 2014-07-26 13:59:57 +0200 | [diff] [blame] | 3287 | hdev->le_adv_min_interval = 0x0800; |
| 3288 | hdev->le_adv_max_interval = 0x0800; |
Marcel Holtmann | bef6473 | 2013-10-11 08:23:19 -0700 | [diff] [blame] | 3289 | hdev->le_scan_interval = 0x0060; |
| 3290 | hdev->le_scan_window = 0x0030; |
Marcel Holtmann | 4e70c7e | 2013-10-19 07:09:13 -0700 | [diff] [blame] | 3291 | hdev->le_conn_min_interval = 0x0028; |
| 3292 | hdev->le_conn_max_interval = 0x0038; |
Marcel Holtmann | 04fb7d9 | 2014-06-30 12:34:36 +0200 | [diff] [blame] | 3293 | hdev->le_conn_latency = 0x0000; |
| 3294 | hdev->le_supv_timeout = 0x002a; |
Marcel Holtmann | a8e1bfa | 2014-12-20 16:28:40 +0100 | [diff] [blame] | 3295 | hdev->le_def_tx_len = 0x001b; |
| 3296 | hdev->le_def_tx_time = 0x0148; |
| 3297 | hdev->le_max_tx_len = 0x001b; |
| 3298 | hdev->le_max_tx_time = 0x0148; |
| 3299 | hdev->le_max_rx_len = 0x001b; |
| 3300 | hdev->le_max_rx_time = 0x0148; |
Marcel Holtmann | bef6473 | 2013-10-11 08:23:19 -0700 | [diff] [blame] | 3301 | |
Johan Hedberg | d6bfd59 | 2014-02-23 19:42:20 +0200 | [diff] [blame] | 3302 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
Lukasz Rymanowski | b9a7a61 | 2014-03-27 20:55:20 +0100 | [diff] [blame] | 3303 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
Andrzej Kaczmarek | 31ad169 | 2014-05-14 13:43:02 +0200 | [diff] [blame] | 3304 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
| 3305 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; |
Johan Hedberg | d6bfd59 | 2014-02-23 19:42:20 +0200 | [diff] [blame] | 3306 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3307 | mutex_init(&hdev->lock); |
| 3308 | mutex_init(&hdev->req_lock); |
| 3309 | |
| 3310 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
| 3311 | INIT_LIST_HEAD(&hdev->blacklist); |
Johan Hedberg | 6659358 | 2014-07-09 12:59:14 +0300 | [diff] [blame] | 3312 | INIT_LIST_HEAD(&hdev->whitelist); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3313 | INIT_LIST_HEAD(&hdev->uuids); |
| 3314 | INIT_LIST_HEAD(&hdev->link_keys); |
| 3315 | INIT_LIST_HEAD(&hdev->long_term_keys); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 3316 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3317 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
Marcel Holtmann | d2ab0ac | 2014-02-27 20:37:30 -0800 | [diff] [blame] | 3318 | INIT_LIST_HEAD(&hdev->le_white_list); |
Andre Guedes | 15819a7 | 2014-02-03 13:56:18 -0300 | [diff] [blame] | 3319 | INIT_LIST_HEAD(&hdev->le_conn_params); |
Andre Guedes | 77a77a3 | 2014-02-26 20:21:46 -0300 | [diff] [blame] | 3320 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
Johan Hedberg | 66f8455 | 2014-07-04 12:37:18 +0300 | [diff] [blame] | 3321 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
Andrei Emeltchenko | 6b536b5 | 2012-08-31 16:39:28 +0300 | [diff] [blame] | 3322 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 3323 | INIT_LIST_HEAD(&hdev->adv_instances); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3324 | |
| 3325 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
| 3326 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
| 3327 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
| 3328 | INIT_WORK(&hdev->power_on, hci_power_on); |
Marcel Holtmann | c7741d1 | 2015-01-28 11:09:55 -0800 | [diff] [blame] | 3329 | INIT_WORK(&hdev->error_reset, hci_error_reset); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3330 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3331 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
| 3332 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
| 3333 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); |
Jakub Pawlowski | 2d28cfe | 2015-02-01 23:07:54 -0800 | [diff] [blame] | 3334 | INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart_work); |
Florian Grandel | 5d900e4 | 2015-06-18 03:16:35 +0200 | [diff] [blame] | 3335 | INIT_DELAYED_WORK(&hdev->adv_instance_expire, hci_adv_timeout_expire); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3336 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3337 | skb_queue_head_init(&hdev->rx_q); |
| 3338 | skb_queue_head_init(&hdev->cmd_q); |
| 3339 | skb_queue_head_init(&hdev->raw_q); |
| 3340 | |
| 3341 | init_waitqueue_head(&hdev->req_wait_q); |
| 3342 | |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 3343 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3344 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3345 | hci_init_sysfs(hdev); |
| 3346 | discovery_init(hdev); |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 3347 | |
| 3348 | return hdev; |
| 3349 | } |
| 3350 | EXPORT_SYMBOL(hci_alloc_dev); |
| 3351 | |
| 3352 | /* Free HCI device */ |
| 3353 | void hci_free_dev(struct hci_dev *hdev) |
| 3354 | { |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 3355 | /* will free via device release */ |
| 3356 | put_device(&hdev->dev); |
| 3357 | } |
| 3358 | EXPORT_SYMBOL(hci_free_dev); |
| 3359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3360 | /* Register HCI device */ |
| 3361 | int hci_register_dev(struct hci_dev *hdev) |
| 3362 | { |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 3363 | int id, error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3364 | |
Marcel Holtmann | 74292d5 | 2014-07-06 15:50:27 +0200 | [diff] [blame] | 3365 | if (!hdev->open || !hdev->close || !hdev->send) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3366 | return -EINVAL; |
| 3367 | |
Mat Martineau | 08add51 | 2011-11-02 16:18:36 -0700 | [diff] [blame] | 3368 | /* Do not allow HCI_AMP devices to register at index 0, |
| 3369 | * so the index can be used as the AMP controller ID. |
| 3370 | */ |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 3371 | switch (hdev->dev_type) { |
| 3372 | case HCI_BREDR: |
| 3373 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
| 3374 | break; |
| 3375 | case HCI_AMP: |
| 3376 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); |
| 3377 | break; |
| 3378 | default: |
| 3379 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3380 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 3381 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 3382 | if (id < 0) |
| 3383 | return id; |
| 3384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | sprintf(hdev->name, "hci%d", id); |
| 3386 | hdev->id = id; |
Andrei Emeltchenko | 2d8b3a1 | 2012-04-16 16:32:04 +0300 | [diff] [blame] | 3387 | |
| 3388 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
| 3389 | |
Kees Cook | d853754 | 2013-07-03 15:04:57 -0700 | [diff] [blame] | 3390 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
| 3391 | WQ_MEM_RECLAIM, 1, hdev->name); |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 3392 | if (!hdev->workqueue) { |
| 3393 | error = -ENOMEM; |
| 3394 | goto err; |
| 3395 | } |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 3396 | |
Kees Cook | d853754 | 2013-07-03 15:04:57 -0700 | [diff] [blame] | 3397 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
| 3398 | WQ_MEM_RECLAIM, 1, hdev->name); |
Johan Hedberg | 6ead1bb | 2013-01-14 22:33:50 +0200 | [diff] [blame] | 3399 | if (!hdev->req_workqueue) { |
| 3400 | destroy_workqueue(hdev->workqueue); |
| 3401 | error = -ENOMEM; |
| 3402 | goto err; |
| 3403 | } |
| 3404 | |
Marcel Holtmann | 0153e2e | 2013-10-17 17:24:17 -0700 | [diff] [blame] | 3405 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
| 3406 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); |
| 3407 | |
Marcel Holtmann | bdc3e0f | 2013-10-17 17:24:19 -0700 | [diff] [blame] | 3408 | dev_set_name(&hdev->dev, "%s", hdev->name); |
| 3409 | |
| 3410 | error = device_add(&hdev->dev); |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 3411 | if (error < 0) |
Johan Hedberg | 5450691 | 2014-08-08 09:32:51 +0300 | [diff] [blame] | 3412 | goto err_wqueue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3413 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 3414 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 3415 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
| 3416 | hdev); |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 3417 | if (hdev->rfkill) { |
| 3418 | if (rfkill_register(hdev->rfkill) < 0) { |
| 3419 | rfkill_destroy(hdev->rfkill); |
| 3420 | hdev->rfkill = NULL; |
| 3421 | } |
| 3422 | } |
| 3423 | |
Johan Hedberg | 5e13036 | 2013-09-13 08:58:17 +0300 | [diff] [blame] | 3424 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 3425 | hci_dev_set_flag(hdev, HCI_RFKILLED); |
Johan Hedberg | 5e13036 | 2013-09-13 08:58:17 +0300 | [diff] [blame] | 3426 | |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 3427 | hci_dev_set_flag(hdev, HCI_SETUP); |
| 3428 | hci_dev_set_flag(hdev, HCI_AUTO_OFF); |
Andrei Emeltchenko | ce2be9a | 2012-06-29 15:07:00 +0300 | [diff] [blame] | 3429 | |
Marcel Holtmann | 01cd340 | 2013-10-06 01:16:22 -0700 | [diff] [blame] | 3430 | if (hdev->dev_type == HCI_BREDR) { |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 3431 | /* Assume BR/EDR support until proven otherwise (such as |
| 3432 | * through reading supported features during init. |
| 3433 | */ |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 3434 | hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 3435 | } |
Andrei Emeltchenko | ce2be9a | 2012-06-29 15:07:00 +0300 | [diff] [blame] | 3436 | |
Gustavo Padovan | fcee337 | 2013-07-11 11:34:28 +0100 | [diff] [blame] | 3437 | write_lock(&hci_dev_list_lock); |
| 3438 | list_add(&hdev->list, &hci_dev_list); |
| 3439 | write_unlock(&hci_dev_list_lock); |
| 3440 | |
Marcel Holtmann | 4a96440 | 2014-07-02 19:10:33 +0200 | [diff] [blame] | 3441 | /* Devices that are marked for raw-only usage are unconfigured |
| 3442 | * and should not be included in normal operation. |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 3443 | */ |
| 3444 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 3445 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); |
Marcel Holtmann | fee746b | 2014-06-29 12:13:05 +0200 | [diff] [blame] | 3446 | |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 3447 | hci_sock_dev_event(hdev, HCI_DEV_REG); |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 3448 | hci_dev_hold(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3449 | |
Johan Hedberg | 1920257 | 2013-01-14 22:33:51 +0200 | [diff] [blame] | 3450 | queue_work(hdev->req_workqueue, &hdev->power_on); |
Marcel Holtmann | fbe96d6 | 2012-10-30 01:35:40 -0700 | [diff] [blame] | 3451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3452 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 3453 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 3454 | err_wqueue: |
| 3455 | destroy_workqueue(hdev->workqueue); |
Johan Hedberg | 6ead1bb | 2013-01-14 22:33:50 +0200 | [diff] [blame] | 3456 | destroy_workqueue(hdev->req_workqueue); |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 3457 | err: |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 3458 | ida_simple_remove(&hci_index_ida, hdev->id); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 3459 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 3460 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3461 | } |
| 3462 | EXPORT_SYMBOL(hci_register_dev); |
| 3463 | |
| 3464 | /* Unregister HCI device */ |
David Herrmann | 5973563 | 2011-10-26 10:43:19 +0200 | [diff] [blame] | 3465 | void hci_unregister_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3466 | { |
Marcel Holtmann | 2d7cc19 | 2015-04-04 21:59:27 -0700 | [diff] [blame] | 3467 | int id; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 3468 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 3469 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3470 | |
Marcel Holtmann | a1536da | 2015-03-13 02:11:01 -0700 | [diff] [blame] | 3471 | hci_dev_set_flag(hdev, HCI_UNREGISTER); |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 3472 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 3473 | id = hdev->id; |
| 3474 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 3475 | write_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3476 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 3477 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3478 | |
| 3479 | hci_dev_do_close(hdev); |
| 3480 | |
Gustavo Padovan | b9b5ef1 | 2012-11-21 00:50:21 -0200 | [diff] [blame] | 3481 | cancel_work_sync(&hdev->power_on); |
| 3482 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 3483 | if (!test_bit(HCI_INIT, &hdev->flags) && |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 3484 | !hci_dev_test_flag(hdev, HCI_SETUP) && |
| 3485 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 3486 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 3487 | mgmt_index_removed(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 3488 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 3489 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 3490 | |
Johan Hedberg | 2e58ef3 | 2011-11-08 20:40:15 +0200 | [diff] [blame] | 3491 | /* mgmt_index_removed should take care of emptying the |
| 3492 | * pending list */ |
| 3493 | BUG_ON(!list_empty(&hdev->mgmt_pending)); |
| 3494 | |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 3495 | hci_sock_dev_event(hdev, HCI_DEV_UNREG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3496 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 3497 | if (hdev->rfkill) { |
| 3498 | rfkill_unregister(hdev->rfkill); |
| 3499 | rfkill_destroy(hdev->rfkill); |
| 3500 | } |
| 3501 | |
Marcel Holtmann | bdc3e0f | 2013-10-17 17:24:19 -0700 | [diff] [blame] | 3502 | device_del(&hdev->dev); |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 3503 | |
Marcel Holtmann | 0153e2e | 2013-10-17 17:24:17 -0700 | [diff] [blame] | 3504 | debugfs_remove_recursive(hdev->debugfs); |
| 3505 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 3506 | destroy_workqueue(hdev->workqueue); |
Johan Hedberg | 6ead1bb | 2013-01-14 22:33:50 +0200 | [diff] [blame] | 3507 | destroy_workqueue(hdev->req_workqueue); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 3508 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 3509 | hci_dev_lock(hdev); |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 3510 | hci_bdaddr_list_clear(&hdev->blacklist); |
Johan Hedberg | 6659358 | 2014-07-09 12:59:14 +0300 | [diff] [blame] | 3511 | hci_bdaddr_list_clear(&hdev->whitelist); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 3512 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 3513 | hci_link_keys_clear(hdev); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 3514 | hci_smp_ltks_clear(hdev); |
Johan Hedberg | 970c4e4 | 2014-02-18 10:19:33 +0200 | [diff] [blame] | 3515 | hci_smp_irks_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 3516 | hci_remote_oob_data_clear(hdev); |
Florian Grandel | d2609b3 | 2015-06-18 03:16:34 +0200 | [diff] [blame] | 3517 | hci_adv_instances_clear(hdev); |
Johan Hedberg | dcc36c1 | 2014-07-09 12:59:13 +0300 | [diff] [blame] | 3518 | hci_bdaddr_list_clear(&hdev->le_white_list); |
Johan Hedberg | 373110c | 2014-07-02 17:37:25 +0300 | [diff] [blame] | 3519 | hci_conn_params_clear_all(hdev); |
Marcel Holtmann | 2207880 | 2014-12-05 11:45:22 +0100 | [diff] [blame] | 3520 | hci_discovery_filter_clear(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 3521 | hci_dev_unlock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 3522 | |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 3523 | hci_dev_put(hdev); |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 3524 | |
| 3525 | ida_simple_remove(&hci_index_ida, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3526 | } |
| 3527 | EXPORT_SYMBOL(hci_unregister_dev); |
| 3528 | |
| 3529 | /* Suspend HCI device */ |
| 3530 | int hci_suspend_dev(struct hci_dev *hdev) |
| 3531 | { |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 3532 | hci_sock_dev_event(hdev, HCI_DEV_SUSPEND); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3533 | return 0; |
| 3534 | } |
| 3535 | EXPORT_SYMBOL(hci_suspend_dev); |
| 3536 | |
| 3537 | /* Resume HCI device */ |
| 3538 | int hci_resume_dev(struct hci_dev *hdev) |
| 3539 | { |
Marcel Holtmann | 05fcd4c | 2015-10-25 23:29:22 +0100 | [diff] [blame] | 3540 | hci_sock_dev_event(hdev, HCI_DEV_RESUME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3541 | return 0; |
| 3542 | } |
| 3543 | EXPORT_SYMBOL(hci_resume_dev); |
| 3544 | |
Marcel Holtmann | 75e0569 | 2014-11-02 08:15:38 +0100 | [diff] [blame] | 3545 | /* Reset HCI device */ |
| 3546 | int hci_reset_dev(struct hci_dev *hdev) |
| 3547 | { |
| 3548 | const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; |
| 3549 | struct sk_buff *skb; |
| 3550 | |
| 3551 | skb = bt_skb_alloc(3, GFP_ATOMIC); |
| 3552 | if (!skb) |
| 3553 | return -ENOMEM; |
| 3554 | |
| 3555 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; |
| 3556 | memcpy(skb_put(skb, 3), hw_err, 3); |
| 3557 | |
| 3558 | /* Send Hardware Error to upper stack */ |
| 3559 | return hci_recv_frame(hdev, skb); |
| 3560 | } |
| 3561 | EXPORT_SYMBOL(hci_reset_dev); |
| 3562 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3563 | /* Receive frame from HCI drivers */ |
Marcel Holtmann | e1a2617 | 2013-10-10 16:52:43 -0700 | [diff] [blame] | 3564 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3565 | { |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3566 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 3567 | && !test_bit(HCI_INIT, &hdev->flags))) { |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3568 | kfree_skb(skb); |
| 3569 | return -ENXIO; |
| 3570 | } |
| 3571 | |
Marcel Holtmann | fe806dc | 2015-10-08 03:14:28 +0200 | [diff] [blame] | 3572 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && |
| 3573 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && |
| 3574 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { |
| 3575 | kfree_skb(skb); |
| 3576 | return -EINVAL; |
| 3577 | } |
| 3578 | |
Jorrit Schippers | d82603c | 2012-12-27 17:33:02 +0100 | [diff] [blame] | 3579 | /* Incoming skb */ |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3580 | bt_cb(skb)->incoming = 1; |
| 3581 | |
| 3582 | /* Time stamp */ |
| 3583 | __net_timestamp(skb); |
| 3584 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3585 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 3586 | queue_work(hdev->workqueue, &hdev->rx_work); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 3587 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 3588 | return 0; |
| 3589 | } |
| 3590 | EXPORT_SYMBOL(hci_recv_frame); |
| 3591 | |
Marcel Holtmann | e875ff8 | 2015-10-07 16:38:35 +0200 | [diff] [blame] | 3592 | /* Receive diagnostic message from HCI drivers */ |
| 3593 | int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb) |
| 3594 | { |
Marcel Holtmann | 581d6fd | 2015-10-09 16:13:51 +0200 | [diff] [blame] | 3595 | /* Mark as diagnostic packet */ |
| 3596 | bt_cb(skb)->pkt_type = HCI_DIAG_PKT; |
| 3597 | |
Marcel Holtmann | e875ff8 | 2015-10-07 16:38:35 +0200 | [diff] [blame] | 3598 | /* Time stamp */ |
| 3599 | __net_timestamp(skb); |
| 3600 | |
Marcel Holtmann | 581d6fd | 2015-10-09 16:13:51 +0200 | [diff] [blame] | 3601 | skb_queue_tail(&hdev->rx_q, skb); |
| 3602 | queue_work(hdev->workqueue, &hdev->rx_work); |
Marcel Holtmann | e875ff8 | 2015-10-07 16:38:35 +0200 | [diff] [blame] | 3603 | |
Marcel Holtmann | e875ff8 | 2015-10-07 16:38:35 +0200 | [diff] [blame] | 3604 | return 0; |
| 3605 | } |
| 3606 | EXPORT_SYMBOL(hci_recv_diag); |
| 3607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3608 | /* ---- Interface to upper protocols ---- */ |
| 3609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3610 | int hci_register_cb(struct hci_cb *cb) |
| 3611 | { |
| 3612 | BT_DBG("%p name %s", cb, cb->name); |
| 3613 | |
Johan Hedberg | fba7ecf | 2015-02-18 14:53:55 +0200 | [diff] [blame] | 3614 | mutex_lock(&hci_cb_list_lock); |
Johan Hedberg | 00629e0 | 2015-02-18 14:53:54 +0200 | [diff] [blame] | 3615 | list_add_tail(&cb->list, &hci_cb_list); |
Johan Hedberg | fba7ecf | 2015-02-18 14:53:55 +0200 | [diff] [blame] | 3616 | mutex_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3617 | |
| 3618 | return 0; |
| 3619 | } |
| 3620 | EXPORT_SYMBOL(hci_register_cb); |
| 3621 | |
| 3622 | int hci_unregister_cb(struct hci_cb *cb) |
| 3623 | { |
| 3624 | BT_DBG("%p name %s", cb, cb->name); |
| 3625 | |
Johan Hedberg | fba7ecf | 2015-02-18 14:53:55 +0200 | [diff] [blame] | 3626 | mutex_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | list_del(&cb->list); |
Johan Hedberg | fba7ecf | 2015-02-18 14:53:55 +0200 | [diff] [blame] | 3628 | mutex_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3629 | |
| 3630 | return 0; |
| 3631 | } |
| 3632 | EXPORT_SYMBOL(hci_unregister_cb); |
| 3633 | |
Marcel Holtmann | 5108699 | 2013-10-10 14:54:19 -0700 | [diff] [blame] | 3634 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3635 | { |
Marcel Holtmann | cdc52fa | 2014-07-06 15:36:15 +0200 | [diff] [blame] | 3636 | int err; |
| 3637 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 3638 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3639 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 3640 | /* Time stamp */ |
| 3641 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3642 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 3643 | /* Send copy to monitor */ |
| 3644 | hci_send_to_monitor(hdev, skb); |
| 3645 | |
| 3646 | if (atomic_read(&hdev->promisc)) { |
| 3647 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 3648 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3649 | } |
| 3650 | |
| 3651 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 3652 | skb_orphan(skb); |
| 3653 | |
Marcel Holtmann | 73d0d3c | 2015-10-04 23:34:01 +0200 | [diff] [blame] | 3654 | if (!test_bit(HCI_RUNNING, &hdev->flags)) { |
| 3655 | kfree_skb(skb); |
| 3656 | return; |
| 3657 | } |
| 3658 | |
Marcel Holtmann | cdc52fa | 2014-07-06 15:36:15 +0200 | [diff] [blame] | 3659 | err = hdev->send(hdev, skb); |
| 3660 | if (err < 0) { |
| 3661 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); |
| 3662 | kfree_skb(skb); |
| 3663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3664 | } |
| 3665 | |
Johan Hedberg | 1ca3a9d | 2013-03-05 20:37:45 +0200 | [diff] [blame] | 3666 | /* Send HCI command */ |
Johan Hedberg | 07dc93d | 2013-04-19 10:14:51 +0300 | [diff] [blame] | 3667 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
| 3668 | const void *param) |
Johan Hedberg | 1ca3a9d | 2013-03-05 20:37:45 +0200 | [diff] [blame] | 3669 | { |
| 3670 | struct sk_buff *skb; |
| 3671 | |
| 3672 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); |
| 3673 | |
| 3674 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
| 3675 | if (!skb) { |
| 3676 | BT_ERR("%s no memory for command", hdev->name); |
| 3677 | return -ENOMEM; |
| 3678 | } |
| 3679 | |
Stephen Hemminger | 49c922b | 2014-10-27 21:12:20 -0700 | [diff] [blame] | 3680 | /* Stand-alone HCI commands must be flagged as |
Johan Hedberg | 11714b3 | 2013-03-05 20:37:47 +0200 | [diff] [blame] | 3681 | * single-command requests. |
| 3682 | */ |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 3683 | bt_cb(skb)->hci.req_start = true; |
Johan Hedberg | 11714b3 | 2013-03-05 20:37:47 +0200 | [diff] [blame] | 3684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3685 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 3686 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3687 | |
| 3688 | return 0; |
| 3689 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3690 | |
| 3691 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 3692 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3693 | { |
| 3694 | struct hci_command_hdr *hdr; |
| 3695 | |
| 3696 | if (!hdev->sent_cmd) |
| 3697 | return NULL; |
| 3698 | |
| 3699 | hdr = (void *) hdev->sent_cmd->data; |
| 3700 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 3701 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3702 | return NULL; |
| 3703 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 3704 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3705 | |
| 3706 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 3707 | } |
| 3708 | |
Loic Poulain | fbef168 | 2015-09-29 15:05:44 +0200 | [diff] [blame] | 3709 | /* Send HCI command and wait for command commplete event */ |
| 3710 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, |
| 3711 | const void *param, u32 timeout) |
| 3712 | { |
| 3713 | struct sk_buff *skb; |
| 3714 | |
| 3715 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 3716 | return ERR_PTR(-ENETDOWN); |
| 3717 | |
| 3718 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); |
| 3719 | |
| 3720 | hci_req_lock(hdev); |
| 3721 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); |
| 3722 | hci_req_unlock(hdev); |
| 3723 | |
| 3724 | return skb; |
| 3725 | } |
| 3726 | EXPORT_SYMBOL(hci_cmd_sync); |
| 3727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3728 | /* Send ACL data */ |
| 3729 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 3730 | { |
| 3731 | struct hci_acl_hdr *hdr; |
| 3732 | int len = skb->len; |
| 3733 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 3734 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 3735 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 3736 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 3737 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 3738 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3739 | } |
| 3740 | |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 3741 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 3742 | struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3743 | { |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 3744 | struct hci_conn *conn = chan->conn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3745 | struct hci_dev *hdev = conn->hdev; |
| 3746 | struct sk_buff *list; |
| 3747 | |
Gustavo Padovan | 087bfd9 | 2012-05-11 13:16:11 -0300 | [diff] [blame] | 3748 | skb->len = skb_headlen(skb); |
| 3749 | skb->data_len = 0; |
| 3750 | |
| 3751 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | 204a6e5 | 2012-10-15 11:58:39 +0300 | [diff] [blame] | 3752 | |
| 3753 | switch (hdev->dev_type) { |
| 3754 | case HCI_BREDR: |
| 3755 | hci_add_acl_hdr(skb, conn->handle, flags); |
| 3756 | break; |
| 3757 | case HCI_AMP: |
| 3758 | hci_add_acl_hdr(skb, chan->handle, flags); |
| 3759 | break; |
| 3760 | default: |
| 3761 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); |
| 3762 | return; |
| 3763 | } |
Gustavo Padovan | 087bfd9 | 2012-05-11 13:16:11 -0300 | [diff] [blame] | 3764 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 3765 | list = skb_shinfo(skb)->frag_list; |
| 3766 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3767 | /* Non fragmented */ |
| 3768 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 3769 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3770 | skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3771 | } else { |
| 3772 | /* Fragmented */ |
| 3773 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 3774 | |
| 3775 | skb_shinfo(skb)->frag_list = NULL; |
| 3776 | |
Jukka Rissanen | 9cfd5a2 | 2014-10-29 10:16:00 +0200 | [diff] [blame] | 3777 | /* Queue all fragments atomically. We need to use spin_lock_bh |
| 3778 | * here because of 6LoWPAN links, as there this function is |
| 3779 | * called from softirq and using normal spin lock could cause |
| 3780 | * deadlocks. |
| 3781 | */ |
| 3782 | spin_lock_bh(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3783 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3784 | __skb_queue_tail(queue, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 3785 | |
| 3786 | flags &= ~ACL_START; |
| 3787 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3788 | do { |
| 3789 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 3790 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 3791 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 3792 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3793 | |
| 3794 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 3795 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3796 | __skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3797 | } while (list); |
| 3798 | |
Jukka Rissanen | 9cfd5a2 | 2014-10-29 10:16:00 +0200 | [diff] [blame] | 3799 | spin_unlock_bh(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3800 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3801 | } |
| 3802 | |
| 3803 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) |
| 3804 | { |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 3805 | struct hci_dev *hdev = chan->conn->hdev; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3806 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 3807 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3808 | |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 3809 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3810 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 3811 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3812 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3813 | |
| 3814 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 3815 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3816 | { |
| 3817 | struct hci_dev *hdev = conn->hdev; |
| 3818 | struct hci_sco_hdr hdr; |
| 3819 | |
| 3820 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 3821 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 3822 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3823 | hdr.dlen = skb->len; |
| 3824 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 3825 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 3826 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 3827 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3828 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 3829 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 3830 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3831 | skb_queue_tail(&conn->data_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 3832 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3833 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3834 | |
| 3835 | /* ---- HCI TX task (outgoing data) ---- */ |
| 3836 | |
| 3837 | /* HCI Connection scheduler */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 3838 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
| 3839 | int *quote) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3840 | { |
| 3841 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 3842 | struct hci_conn *conn = NULL, *c; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 3843 | unsigned int num = 0, min = ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3844 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 3845 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | * added and removed with TX task disabled. */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3847 | |
| 3848 | rcu_read_lock(); |
| 3849 | |
| 3850 | list_for_each_entry_rcu(c, &h->list, list) { |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 3851 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3852 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 3853 | |
| 3854 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 3855 | continue; |
| 3856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3857 | num++; |
| 3858 | |
| 3859 | if (c->sent < min) { |
| 3860 | min = c->sent; |
| 3861 | conn = c; |
| 3862 | } |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 3863 | |
| 3864 | if (hci_conn_num(hdev, type) == num) |
| 3865 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3866 | } |
| 3867 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3868 | rcu_read_unlock(); |
| 3869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3870 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 3871 | int cnt, q; |
| 3872 | |
| 3873 | switch (conn->type) { |
| 3874 | case ACL_LINK: |
| 3875 | cnt = hdev->acl_cnt; |
| 3876 | break; |
| 3877 | case SCO_LINK: |
| 3878 | case ESCO_LINK: |
| 3879 | cnt = hdev->sco_cnt; |
| 3880 | break; |
| 3881 | case LE_LINK: |
| 3882 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 3883 | break; |
| 3884 | default: |
| 3885 | cnt = 0; |
| 3886 | BT_ERR("Unknown link type"); |
| 3887 | } |
| 3888 | |
| 3889 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3890 | *quote = q ? q : 1; |
| 3891 | } else |
| 3892 | *quote = 0; |
| 3893 | |
| 3894 | BT_DBG("conn %p quote %d", conn, *quote); |
| 3895 | return conn; |
| 3896 | } |
| 3897 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 3898 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3899 | { |
| 3900 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 3901 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3902 | |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 3903 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3904 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3905 | rcu_read_lock(); |
| 3906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3907 | /* Kill stalled connections */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3908 | list_for_each_entry_rcu(c, &h->list, list) { |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 3909 | if (c->type == type && c->sent) { |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 3910 | BT_ERR("%s killing stalled connection %pMR", |
| 3911 | hdev->name, &c->dst); |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 3912 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3913 | } |
| 3914 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3915 | |
| 3916 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3917 | } |
| 3918 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 3919 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
| 3920 | int *quote) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3921 | { |
| 3922 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 3923 | struct hci_chan *chan = NULL; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 3924 | unsigned int num = 0, min = ~0, cur_prio = 0; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3925 | struct hci_conn *conn; |
| 3926 | int cnt, q, conn_num = 0; |
| 3927 | |
| 3928 | BT_DBG("%s", hdev->name); |
| 3929 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3930 | rcu_read_lock(); |
| 3931 | |
| 3932 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3933 | struct hci_chan *tmp; |
| 3934 | |
| 3935 | if (conn->type != type) |
| 3936 | continue; |
| 3937 | |
| 3938 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 3939 | continue; |
| 3940 | |
| 3941 | conn_num++; |
| 3942 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 3943 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3944 | struct sk_buff *skb; |
| 3945 | |
| 3946 | if (skb_queue_empty(&tmp->data_q)) |
| 3947 | continue; |
| 3948 | |
| 3949 | skb = skb_peek(&tmp->data_q); |
| 3950 | if (skb->priority < cur_prio) |
| 3951 | continue; |
| 3952 | |
| 3953 | if (skb->priority > cur_prio) { |
| 3954 | num = 0; |
| 3955 | min = ~0; |
| 3956 | cur_prio = skb->priority; |
| 3957 | } |
| 3958 | |
| 3959 | num++; |
| 3960 | |
| 3961 | if (conn->sent < min) { |
| 3962 | min = conn->sent; |
| 3963 | chan = tmp; |
| 3964 | } |
| 3965 | } |
| 3966 | |
| 3967 | if (hci_conn_num(hdev, type) == conn_num) |
| 3968 | break; |
| 3969 | } |
| 3970 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 3971 | rcu_read_unlock(); |
| 3972 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3973 | if (!chan) |
| 3974 | return NULL; |
| 3975 | |
| 3976 | switch (chan->conn->type) { |
| 3977 | case ACL_LINK: |
| 3978 | cnt = hdev->acl_cnt; |
| 3979 | break; |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 3980 | case AMP_LINK: |
| 3981 | cnt = hdev->block_cnt; |
| 3982 | break; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 3983 | case SCO_LINK: |
| 3984 | case ESCO_LINK: |
| 3985 | cnt = hdev->sco_cnt; |
| 3986 | break; |
| 3987 | case LE_LINK: |
| 3988 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 3989 | break; |
| 3990 | default: |
| 3991 | cnt = 0; |
| 3992 | BT_ERR("Unknown link type"); |
| 3993 | } |
| 3994 | |
| 3995 | q = cnt / num; |
| 3996 | *quote = q ? q : 1; |
| 3997 | BT_DBG("chan %p quote %d", chan, *quote); |
| 3998 | return chan; |
| 3999 | } |
| 4000 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4001 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
| 4002 | { |
| 4003 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 4004 | struct hci_conn *conn; |
| 4005 | int num = 0; |
| 4006 | |
| 4007 | BT_DBG("%s", hdev->name); |
| 4008 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 4009 | rcu_read_lock(); |
| 4010 | |
| 4011 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4012 | struct hci_chan *chan; |
| 4013 | |
| 4014 | if (conn->type != type) |
| 4015 | continue; |
| 4016 | |
| 4017 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 4018 | continue; |
| 4019 | |
| 4020 | num++; |
| 4021 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 4022 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4023 | struct sk_buff *skb; |
| 4024 | |
| 4025 | if (chan->sent) { |
| 4026 | chan->sent = 0; |
| 4027 | continue; |
| 4028 | } |
| 4029 | |
| 4030 | if (skb_queue_empty(&chan->data_q)) |
| 4031 | continue; |
| 4032 | |
| 4033 | skb = skb_peek(&chan->data_q); |
| 4034 | if (skb->priority >= HCI_PRIO_MAX - 1) |
| 4035 | continue; |
| 4036 | |
| 4037 | skb->priority = HCI_PRIO_MAX - 1; |
| 4038 | |
| 4039 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4040 | skb->priority); |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4041 | } |
| 4042 | |
| 4043 | if (hci_conn_num(hdev, type) == num) |
| 4044 | break; |
| 4045 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 4046 | |
| 4047 | rcu_read_unlock(); |
| 4048 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4049 | } |
| 4050 | |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4051 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
| 4052 | { |
| 4053 | /* Calculate count of blocks used by this packet */ |
| 4054 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); |
| 4055 | } |
| 4056 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4057 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4058 | { |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 4059 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4060 | /* ACL tx timeout must be longer than maximum |
| 4061 | * link supervision timeout (40.9 seconds) */ |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 4062 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 4063 | HCI_ACL_TX_TIMEOUT)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 4064 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4065 | } |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 4066 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4067 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4068 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 4069 | { |
| 4070 | unsigned int cnt = hdev->acl_cnt; |
| 4071 | struct hci_chan *chan; |
| 4072 | struct sk_buff *skb; |
| 4073 | int quote; |
| 4074 | |
| 4075 | __check_timeout(hdev, cnt); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 4076 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4077 | while (hdev->acl_cnt && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4078 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 4079 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 4080 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4081 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4082 | skb->len, skb->priority); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4083 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 4084 | /* Stop if priority has changed */ |
| 4085 | if (skb->priority < priority) |
| 4086 | break; |
| 4087 | |
| 4088 | skb = skb_dequeue(&chan->data_q); |
| 4089 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4090 | hci_conn_enter_active_mode(chan->conn, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 4091 | bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 4092 | |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4093 | hci_send_frame(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4094 | hdev->acl_last_tx = jiffies; |
| 4095 | |
| 4096 | hdev->acl_cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4097 | chan->sent++; |
| 4098 | chan->conn->sent++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4099 | } |
| 4100 | } |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4101 | |
| 4102 | if (cnt != hdev->acl_cnt) |
| 4103 | hci_prio_recalculate(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4104 | } |
| 4105 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4106 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4107 | { |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 4108 | unsigned int cnt = hdev->block_cnt; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4109 | struct hci_chan *chan; |
| 4110 | struct sk_buff *skb; |
| 4111 | int quote; |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 4112 | u8 type; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4113 | |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 4114 | __check_timeout(hdev, cnt); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4115 | |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 4116 | BT_DBG("%s", hdev->name); |
| 4117 | |
| 4118 | if (hdev->dev_type == HCI_AMP) |
| 4119 | type = AMP_LINK; |
| 4120 | else |
| 4121 | type = ACL_LINK; |
| 4122 | |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4123 | while (hdev->block_cnt > 0 && |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 4124 | (chan = hci_chan_sent(hdev, type, "e))) { |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4125 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 4126 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { |
| 4127 | int blocks; |
| 4128 | |
| 4129 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4130 | skb->len, skb->priority); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4131 | |
| 4132 | /* Stop if priority has changed */ |
| 4133 | if (skb->priority < priority) |
| 4134 | break; |
| 4135 | |
| 4136 | skb = skb_dequeue(&chan->data_q); |
| 4137 | |
| 4138 | blocks = __get_blocks(hdev, skb); |
| 4139 | if (blocks > hdev->block_cnt) |
| 4140 | return; |
| 4141 | |
| 4142 | hci_conn_enter_active_mode(chan->conn, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4143 | bt_cb(skb)->force_active); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4144 | |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4145 | hci_send_frame(hdev, skb); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4146 | hdev->acl_last_tx = jiffies; |
| 4147 | |
| 4148 | hdev->block_cnt -= blocks; |
| 4149 | quote -= blocks; |
| 4150 | |
| 4151 | chan->sent += blocks; |
| 4152 | chan->conn->sent += blocks; |
| 4153 | } |
| 4154 | } |
| 4155 | |
| 4156 | if (cnt != hdev->block_cnt) |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 4157 | hci_prio_recalculate(hdev, type); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4158 | } |
| 4159 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4160 | static void hci_sched_acl(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4161 | { |
| 4162 | BT_DBG("%s", hdev->name); |
| 4163 | |
Andrei Emeltchenko | bd1eb66 | 2012-10-10 17:38:30 +0300 | [diff] [blame] | 4164 | /* No ACL link over BR/EDR controller */ |
| 4165 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) |
| 4166 | return; |
| 4167 | |
| 4168 | /* No AMP link over AMP controller */ |
| 4169 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 4170 | return; |
| 4171 | |
| 4172 | switch (hdev->flow_ctl_mode) { |
| 4173 | case HCI_FLOW_CTL_MODE_PACKET_BASED: |
| 4174 | hci_sched_acl_pkt(hdev); |
| 4175 | break; |
| 4176 | |
| 4177 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: |
| 4178 | hci_sched_acl_blk(hdev); |
| 4179 | break; |
| 4180 | } |
| 4181 | } |
| 4182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4183 | /* Schedule SCO */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4184 | static void hci_sched_sco(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4185 | { |
| 4186 | struct hci_conn *conn; |
| 4187 | struct sk_buff *skb; |
| 4188 | int quote; |
| 4189 | |
| 4190 | BT_DBG("%s", hdev->name); |
| 4191 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 4192 | if (!hci_conn_num(hdev, SCO_LINK)) |
| 4193 | return; |
| 4194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4195 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 4196 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 4197 | BT_DBG("skb %p len %d", skb, skb->len); |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4198 | hci_send_frame(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4199 | |
| 4200 | conn->sent++; |
| 4201 | if (conn->sent == ~0) |
| 4202 | conn->sent = 0; |
| 4203 | } |
| 4204 | } |
| 4205 | } |
| 4206 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4207 | static void hci_sched_esco(struct hci_dev *hdev) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 4208 | { |
| 4209 | struct hci_conn *conn; |
| 4210 | struct sk_buff *skb; |
| 4211 | int quote; |
| 4212 | |
| 4213 | BT_DBG("%s", hdev->name); |
| 4214 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 4215 | if (!hci_conn_num(hdev, ESCO_LINK)) |
| 4216 | return; |
| 4217 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 4218 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
| 4219 | "e))) { |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 4220 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 4221 | BT_DBG("skb %p len %d", skb, skb->len); |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4222 | hci_send_frame(hdev, skb); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 4223 | |
| 4224 | conn->sent++; |
| 4225 | if (conn->sent == ~0) |
| 4226 | conn->sent = 0; |
| 4227 | } |
| 4228 | } |
| 4229 | } |
| 4230 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4231 | static void hci_sched_le(struct hci_dev *hdev) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4232 | { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4233 | struct hci_chan *chan; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4234 | struct sk_buff *skb; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4235 | int quote, cnt, tmp; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4236 | |
| 4237 | BT_DBG("%s", hdev->name); |
| 4238 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 4239 | if (!hci_conn_num(hdev, LE_LINK)) |
| 4240 | return; |
| 4241 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 4242 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4243 | /* LE tx timeout must be longer than maximum |
| 4244 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 4245 | if (!hdev->le_cnt && hdev->le_pkts && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4246 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 4247 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4248 | } |
| 4249 | |
| 4250 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4251 | tmp = cnt; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4252 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 4253 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 4254 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4255 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4256 | skb->len, skb->priority); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4257 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 4258 | /* Stop if priority has changed */ |
| 4259 | if (skb->priority < priority) |
| 4260 | break; |
| 4261 | |
| 4262 | skb = skb_dequeue(&chan->data_q); |
| 4263 | |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4264 | hci_send_frame(hdev, skb); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4265 | hdev->le_last_tx = jiffies; |
| 4266 | |
| 4267 | cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4268 | chan->sent++; |
| 4269 | chan->conn->sent++; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4270 | } |
| 4271 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 4272 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4273 | if (hdev->le_pkts) |
| 4274 | hdev->le_cnt = cnt; |
| 4275 | else |
| 4276 | hdev->acl_cnt = cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 4277 | |
| 4278 | if (cnt != tmp) |
| 4279 | hci_prio_recalculate(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4280 | } |
| 4281 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 4282 | static void hci_tx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4283 | { |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 4284 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4285 | struct sk_buff *skb; |
| 4286 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4287 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4288 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4289 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 4290 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Marcel Holtmann | 52de599 | 2013-09-03 18:08:38 -0700 | [diff] [blame] | 4291 | /* Schedule queues and send stuff to HCI driver */ |
| 4292 | hci_sched_acl(hdev); |
| 4293 | hci_sched_sco(hdev); |
| 4294 | hci_sched_esco(hdev); |
| 4295 | hci_sched_le(hdev); |
| 4296 | } |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 4297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4298 | /* Send next queued raw (unknown type) packet */ |
| 4299 | while ((skb = skb_dequeue(&hdev->raw_q))) |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4300 | hci_send_frame(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4301 | } |
| 4302 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 4303 | /* ----- HCI RX task (incoming data processing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4304 | |
| 4305 | /* ACL data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4306 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4307 | { |
| 4308 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 4309 | struct hci_conn *conn; |
| 4310 | __u16 handle, flags; |
| 4311 | |
| 4312 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 4313 | |
| 4314 | handle = __le16_to_cpu(hdr->handle); |
| 4315 | flags = hci_flags(handle); |
| 4316 | handle = hci_handle(handle); |
| 4317 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 4318 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4319 | handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4320 | |
| 4321 | hdev->stat.acl_rx++; |
| 4322 | |
| 4323 | hci_dev_lock(hdev); |
| 4324 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 4325 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 4326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4327 | if (conn) { |
Mat Martineau | 65983fc | 2011-12-13 15:06:02 -0800 | [diff] [blame] | 4328 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 4329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4330 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 4331 | l2cap_recv_acldata(conn, skb, flags); |
| 4332 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4333 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 4334 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4335 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4336 | } |
| 4337 | |
| 4338 | kfree_skb(skb); |
| 4339 | } |
| 4340 | |
| 4341 | /* SCO data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 4342 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4343 | { |
| 4344 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 4345 | struct hci_conn *conn; |
| 4346 | __u16 handle; |
| 4347 | |
| 4348 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 4349 | |
| 4350 | handle = __le16_to_cpu(hdr->handle); |
| 4351 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 4352 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4353 | |
| 4354 | hdev->stat.sco_rx++; |
| 4355 | |
| 4356 | hci_dev_lock(hdev); |
| 4357 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 4358 | hci_dev_unlock(hdev); |
| 4359 | |
| 4360 | if (conn) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4361 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 4362 | sco_recv_scodata(conn, skb); |
| 4363 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4364 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 4365 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 4366 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4367 | } |
| 4368 | |
| 4369 | kfree_skb(skb); |
| 4370 | } |
| 4371 | |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4372 | static bool hci_req_is_complete(struct hci_dev *hdev) |
| 4373 | { |
| 4374 | struct sk_buff *skb; |
| 4375 | |
| 4376 | skb = skb_peek(&hdev->cmd_q); |
| 4377 | if (!skb) |
| 4378 | return true; |
| 4379 | |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 4380 | return bt_cb(skb)->hci.req_start; |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4381 | } |
| 4382 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 4383 | static void hci_resend_last(struct hci_dev *hdev) |
| 4384 | { |
| 4385 | struct hci_command_hdr *sent; |
| 4386 | struct sk_buff *skb; |
| 4387 | u16 opcode; |
| 4388 | |
| 4389 | if (!hdev->sent_cmd) |
| 4390 | return; |
| 4391 | |
| 4392 | sent = (void *) hdev->sent_cmd->data; |
| 4393 | opcode = __le16_to_cpu(sent->opcode); |
| 4394 | if (opcode == HCI_OP_RESET) |
| 4395 | return; |
| 4396 | |
| 4397 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); |
| 4398 | if (!skb) |
| 4399 | return; |
| 4400 | |
| 4401 | skb_queue_head(&hdev->cmd_q, skb); |
| 4402 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 4403 | } |
| 4404 | |
Johan Hedberg | e6214487 | 2015-04-02 13:41:08 +0300 | [diff] [blame] | 4405 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, |
| 4406 | hci_req_complete_t *req_complete, |
| 4407 | hci_req_complete_skb_t *req_complete_skb) |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4408 | { |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4409 | struct sk_buff *skb; |
| 4410 | unsigned long flags; |
| 4411 | |
| 4412 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); |
| 4413 | |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 4414 | /* If the completed command doesn't match the last one that was |
| 4415 | * sent we need to do special handling of it. |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4416 | */ |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 4417 | if (!hci_sent_cmd_data(hdev, opcode)) { |
| 4418 | /* Some CSR based controllers generate a spontaneous |
| 4419 | * reset complete event during init and any pending |
| 4420 | * command will never be completed. In such a case we |
| 4421 | * need to resend whatever was the last sent |
| 4422 | * command. |
| 4423 | */ |
| 4424 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) |
| 4425 | hci_resend_last(hdev); |
| 4426 | |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4427 | return; |
Johan Hedberg | 42c6b12 | 2013-03-05 20:37:49 +0200 | [diff] [blame] | 4428 | } |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4429 | |
| 4430 | /* If the command succeeded and there's still more commands in |
| 4431 | * this request the request is not yet complete. |
| 4432 | */ |
| 4433 | if (!status && !hci_req_is_complete(hdev)) |
| 4434 | return; |
| 4435 | |
| 4436 | /* If this was the last command in a request the complete |
| 4437 | * callback would be found in hdev->sent_cmd instead of the |
| 4438 | * command queue (hdev->cmd_q). |
| 4439 | */ |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 4440 | if (bt_cb(hdev->sent_cmd)->hci.req_complete) { |
| 4441 | *req_complete = bt_cb(hdev->sent_cmd)->hci.req_complete; |
Johan Hedberg | e6214487 | 2015-04-02 13:41:08 +0300 | [diff] [blame] | 4442 | return; |
| 4443 | } |
Johan Hedberg | 53e21fb | 2013-07-27 14:11:14 -0500 | [diff] [blame] | 4444 | |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 4445 | if (bt_cb(hdev->sent_cmd)->hci.req_complete_skb) { |
| 4446 | *req_complete_skb = bt_cb(hdev->sent_cmd)->hci.req_complete_skb; |
Johan Hedberg | e6214487 | 2015-04-02 13:41:08 +0300 | [diff] [blame] | 4447 | return; |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4448 | } |
| 4449 | |
| 4450 | /* Remove all pending commands belonging to this request */ |
| 4451 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); |
| 4452 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 4453 | if (bt_cb(skb)->hci.req_start) { |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4454 | __skb_queue_head(&hdev->cmd_q, skb); |
| 4455 | break; |
| 4456 | } |
| 4457 | |
Marcel Holtmann | 242c0eb | 2015-10-25 22:45:53 +0100 | [diff] [blame] | 4458 | *req_complete = bt_cb(skb)->hci.req_complete; |
| 4459 | *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4460 | kfree_skb(skb); |
| 4461 | } |
| 4462 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); |
Johan Hedberg | 9238f36 | 2013-03-05 20:37:48 +0200 | [diff] [blame] | 4463 | } |
| 4464 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 4465 | static void hci_rx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4466 | { |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 4467 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4468 | struct sk_buff *skb; |
| 4469 | |
| 4470 | BT_DBG("%s", hdev->name); |
| 4471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4472 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 4473 | /* Send copy to monitor */ |
| 4474 | hci_send_to_monitor(hdev, skb); |
| 4475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4476 | if (atomic_read(&hdev->promisc)) { |
| 4477 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 4478 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4479 | } |
| 4480 | |
Marcel Holtmann | d7a5a11 | 2015-03-13 02:11:00 -0700 | [diff] [blame] | 4481 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4482 | kfree_skb(skb); |
| 4483 | continue; |
| 4484 | } |
| 4485 | |
| 4486 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 4487 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 4488 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4489 | case HCI_ACLDATA_PKT: |
| 4490 | case HCI_SCODATA_PKT: |
| 4491 | kfree_skb(skb); |
| 4492 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 4493 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4494 | } |
| 4495 | |
| 4496 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 4497 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4498 | case HCI_EVENT_PKT: |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 4499 | BT_DBG("%s Event packet", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4500 | hci_event_packet(hdev, skb); |
| 4501 | break; |
| 4502 | |
| 4503 | case HCI_ACLDATA_PKT: |
| 4504 | BT_DBG("%s ACL data packet", hdev->name); |
| 4505 | hci_acldata_packet(hdev, skb); |
| 4506 | break; |
| 4507 | |
| 4508 | case HCI_SCODATA_PKT: |
| 4509 | BT_DBG("%s SCO data packet", hdev->name); |
| 4510 | hci_scodata_packet(hdev, skb); |
| 4511 | break; |
| 4512 | |
| 4513 | default: |
| 4514 | kfree_skb(skb); |
| 4515 | break; |
| 4516 | } |
| 4517 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4518 | } |
| 4519 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 4520 | static void hci_cmd_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4521 | { |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 4522 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4523 | struct sk_buff *skb; |
| 4524 | |
Andrei Emeltchenko | 2104786 | 2012-07-10 15:27:47 +0300 | [diff] [blame] | 4525 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
| 4526 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4528 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 4529 | if (atomic_read(&hdev->cmd_cnt)) { |
| 4530 | skb = skb_dequeue(&hdev->cmd_q); |
| 4531 | if (!skb) |
| 4532 | return; |
| 4533 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 4534 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4535 | |
Marcel Holtmann | a675d7f | 2013-09-03 18:11:07 -0700 | [diff] [blame] | 4536 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 4537 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4538 | atomic_dec(&hdev->cmd_cnt); |
Marcel Holtmann | 57d17d7 | 2013-10-10 14:54:17 -0700 | [diff] [blame] | 4539 | hci_send_frame(hdev, skb); |
Szymon Janc | 7bdb8a5 | 2011-07-26 22:46:54 +0200 | [diff] [blame] | 4540 | if (test_bit(HCI_RESET, &hdev->flags)) |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 4541 | cancel_delayed_work(&hdev->cmd_timer); |
Szymon Janc | 7bdb8a5 | 2011-07-26 22:46:54 +0200 | [diff] [blame] | 4542 | else |
Marcel Holtmann | 65cc2b4 | 2014-06-16 12:30:56 +0200 | [diff] [blame] | 4543 | schedule_delayed_work(&hdev->cmd_timer, |
| 4544 | HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4545 | } else { |
| 4546 | skb_queue_head(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 4547 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4548 | } |
| 4549 | } |
| 4550 | } |