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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 30 | #include <linux/rfkill.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | #include <net/bluetooth/bluetooth.h> |
| 33 | #include <net/bluetooth/hci_core.h> |
| 34 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 35 | #define AUTO_OFF_TIMEOUT 2000 |
| 36 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 37 | static void hci_rx_work(struct work_struct *work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 38 | static void hci_cmd_work(struct work_struct *work); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 39 | static void hci_tx_work(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | /* HCI device list */ |
| 42 | LIST_HEAD(hci_dev_list); |
| 43 | DEFINE_RWLOCK(hci_dev_list_lock); |
| 44 | |
| 45 | /* HCI callback list */ |
| 46 | LIST_HEAD(hci_cb_list); |
| 47 | DEFINE_RWLOCK(hci_cb_list_lock); |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* ---- HCI notifications ---- */ |
| 50 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 51 | static void hci_notify(struct hci_dev *hdev, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 53 | hci_sock_dev_event(hdev, event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | /* ---- HCI requests ---- */ |
| 57 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 58 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | { |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 60 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
| 61 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 62 | /* If this is the init phase check if the completed command matches |
| 63 | * the last init command, and if not just return. |
| 64 | */ |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 65 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
| 66 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; |
Andrei Emeltchenko | 1036b89 | 2012-03-12 15:59:33 +0200 | [diff] [blame] | 67 | u16 opcode = __le16_to_cpu(sent->opcode); |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 68 | struct sk_buff *skb; |
| 69 | |
| 70 | /* Some CSR based controllers generate a spontaneous |
| 71 | * reset complete event during init and any pending |
| 72 | * command will never be completed. In such a case we |
| 73 | * need to resend whatever was the last sent |
| 74 | * command. |
| 75 | */ |
| 76 | |
Andrei Emeltchenko | 1036b89 | 2012-03-12 15:59:33 +0200 | [diff] [blame] | 77 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 78 | return; |
| 79 | |
| 80 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); |
| 81 | if (skb) { |
| 82 | skb_queue_head(&hdev->cmd_q, skb); |
| 83 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 84 | } |
| 85 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 86 | return; |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 87 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | if (hdev->req_status == HCI_REQ_PEND) { |
| 90 | hdev->req_result = result; |
| 91 | hdev->req_status = HCI_REQ_DONE; |
| 92 | wake_up_interruptible(&hdev->req_wait_q); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 97 | { |
| 98 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 99 | |
| 100 | if (hdev->req_status == HCI_REQ_PEND) { |
| 101 | hdev->req_result = err; |
| 102 | hdev->req_status = HCI_REQ_CANCELED; |
| 103 | wake_up_interruptible(&hdev->req_wait_q); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /* Execute request and wait for completion. */ |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 108 | static int __hci_request(struct hci_dev *hdev, |
| 109 | void (*req)(struct hci_dev *hdev, unsigned long opt), |
| 110 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
| 112 | DECLARE_WAITQUEUE(wait, current); |
| 113 | int err = 0; |
| 114 | |
| 115 | BT_DBG("%s start", hdev->name); |
| 116 | |
| 117 | hdev->req_status = HCI_REQ_PEND; |
| 118 | |
| 119 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 120 | set_current_state(TASK_INTERRUPTIBLE); |
| 121 | |
| 122 | req(hdev, opt); |
| 123 | schedule_timeout(timeout); |
| 124 | |
| 125 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 126 | |
| 127 | if (signal_pending(current)) |
| 128 | return -EINTR; |
| 129 | |
| 130 | switch (hdev->req_status) { |
| 131 | case HCI_REQ_DONE: |
Joe Perches | e175072 | 2011-06-29 18:18:29 -0700 | [diff] [blame] | 132 | err = -bt_to_errno(hdev->req_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | break; |
| 134 | |
| 135 | case HCI_REQ_CANCELED: |
| 136 | err = -hdev->req_result; |
| 137 | break; |
| 138 | |
| 139 | default: |
| 140 | err = -ETIMEDOUT; |
| 141 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 142 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 144 | hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | BT_DBG("%s end: err %d", hdev->name, err); |
| 147 | |
| 148 | return err; |
| 149 | } |
| 150 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 151 | static int hci_request(struct hci_dev *hdev, |
| 152 | void (*req)(struct hci_dev *hdev, unsigned long opt), |
| 153 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
| 155 | int ret; |
| 156 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 157 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 158 | return -ENETDOWN; |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* Serialize all requests */ |
| 161 | hci_req_lock(hdev); |
| 162 | ret = __hci_request(hdev, req, opt, timeout); |
| 163 | hci_req_unlock(hdev); |
| 164 | |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) |
| 169 | { |
| 170 | BT_DBG("%s %ld", hdev->name, opt); |
| 171 | |
| 172 | /* Reset device */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 173 | set_bit(HCI_RESET, &hdev->flags); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 174 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | } |
| 176 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 177 | static void bredr_init(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | { |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 179 | struct hci_cp_delete_stored_link_key cp; |
Marcel Holtmann | 1ebb925 | 2005-11-08 09:57:21 -0800 | [diff] [blame] | 180 | __le16 param; |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 181 | __u8 flt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 183 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
| 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | /* Mandatory initialization */ |
| 186 | |
| 187 | /* Reset */ |
Szymon Janc | a6c511c | 2012-05-23 12:35:46 +0200 | [diff] [blame] | 188 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 189 | set_bit(HCI_RESET, &hdev->flags); |
| 190 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 191 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | /* Read Local Supported Features */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 194 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 196 | /* Read Local Version */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 197 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 200 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* Read BD Address */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 203 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
| 204 | |
| 205 | /* Read Class of Device */ |
| 206 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
| 207 | |
| 208 | /* Read Local Name */ |
| 209 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | /* Read Voice Setting */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 212 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | /* Optional initialization */ |
| 215 | |
| 216 | /* Clear Event Filters */ |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 217 | flt_type = HCI_FLT_CLEAR_ALL; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 218 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | /* Connection accept timeout ~20 secs */ |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame^] | 221 | param = __constant_cpu_to_le16(0x7d00); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 222 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 223 | |
| 224 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 225 | cp.delete_all = 1; |
| 226 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 229 | static void amp_init(struct hci_dev *hdev) |
| 230 | { |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 231 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
| 232 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 233 | /* Reset */ |
| 234 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
| 235 | |
| 236 | /* Read Local Version */ |
| 237 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Andrei Emeltchenko | 6bcbc48 | 2012-03-28 16:31:24 +0300 | [diff] [blame] | 238 | |
| 239 | /* Read Local AMP Info */ |
| 240 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) |
| 244 | { |
| 245 | struct sk_buff *skb; |
| 246 | |
| 247 | BT_DBG("%s %ld", hdev->name, opt); |
| 248 | |
| 249 | /* Driver initialization */ |
| 250 | |
| 251 | /* Special commands */ |
| 252 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
| 253 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
| 254 | skb->dev = (void *) hdev; |
| 255 | |
| 256 | skb_queue_tail(&hdev->cmd_q, skb); |
| 257 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 258 | } |
| 259 | skb_queue_purge(&hdev->driver_init); |
| 260 | |
| 261 | switch (hdev->dev_type) { |
| 262 | case HCI_BREDR: |
| 263 | bredr_init(hdev); |
| 264 | break; |
| 265 | |
| 266 | case HCI_AMP: |
| 267 | amp_init(hdev); |
| 268 | break; |
| 269 | |
| 270 | default: |
| 271 | BT_ERR("Unknown device type %d", hdev->dev_type); |
| 272 | break; |
| 273 | } |
| 274 | |
| 275 | } |
| 276 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 277 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
| 278 | { |
| 279 | BT_DBG("%s", hdev->name); |
| 280 | |
| 281 | /* Read LE buffer size */ |
| 282 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
| 283 | } |
| 284 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 286 | { |
| 287 | __u8 scan = opt; |
| 288 | |
| 289 | BT_DBG("%s %x", hdev->name, scan); |
| 290 | |
| 291 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 292 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 296 | { |
| 297 | __u8 auth = opt; |
| 298 | |
| 299 | BT_DBG("%s %x", hdev->name, auth); |
| 300 | |
| 301 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 302 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 306 | { |
| 307 | __u8 encrypt = opt; |
| 308 | |
| 309 | BT_DBG("%s %x", hdev->name, encrypt); |
| 310 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 311 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 312 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 315 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 316 | { |
| 317 | __le16 policy = cpu_to_le16(opt); |
| 318 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 319 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 320 | |
| 321 | /* Default link policy */ |
| 322 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 323 | } |
| 324 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 325 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | * Device is held on return. */ |
| 327 | struct hci_dev *hci_dev_get(int index) |
| 328 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 329 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
| 331 | BT_DBG("%d", index); |
| 332 | |
| 333 | if (index < 0) |
| 334 | return NULL; |
| 335 | |
| 336 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 337 | list_for_each_entry(d, &hci_dev_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | if (d->id == index) { |
| 339 | hdev = hci_dev_hold(d); |
| 340 | break; |
| 341 | } |
| 342 | } |
| 343 | read_unlock(&hci_dev_list_lock); |
| 344 | return hdev; |
| 345 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
| 347 | /* ---- Inquiry support ---- */ |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 348 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 349 | bool hci_discovery_active(struct hci_dev *hdev) |
| 350 | { |
| 351 | struct discovery_state *discov = &hdev->discovery; |
| 352 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 353 | switch (discov->state) { |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 354 | case DISCOVERY_FINDING: |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 355 | case DISCOVERY_RESOLVING: |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 356 | return true; |
| 357 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 358 | default: |
| 359 | return false; |
| 360 | } |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 361 | } |
| 362 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 363 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
| 364 | { |
| 365 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
| 366 | |
| 367 | if (hdev->discovery.state == state) |
| 368 | return; |
| 369 | |
| 370 | switch (state) { |
| 371 | case DISCOVERY_STOPPED: |
Andre Guedes | 7b99b65 | 2012-02-13 15:41:02 -0300 | [diff] [blame] | 372 | if (hdev->discovery.state != DISCOVERY_STARTING) |
| 373 | mgmt_discovering(hdev, 0); |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 374 | break; |
| 375 | case DISCOVERY_STARTING: |
| 376 | break; |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 377 | case DISCOVERY_FINDING: |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 378 | mgmt_discovering(hdev, 1); |
| 379 | break; |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 380 | case DISCOVERY_RESOLVING: |
| 381 | break; |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 382 | case DISCOVERY_STOPPING: |
| 383 | break; |
| 384 | } |
| 385 | |
| 386 | hdev->discovery.state = state; |
| 387 | } |
| 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 390 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 391 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 392 | struct inquiry_entry *p, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 394 | list_for_each_entry_safe(p, n, &cache->all, all) { |
| 395 | list_del(&p->all); |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 396 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 398 | |
| 399 | INIT_LIST_HEAD(&cache->unknown); |
| 400 | INIT_LIST_HEAD(&cache->resolve); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | } |
| 402 | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 403 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
| 404 | bdaddr_t *bdaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 406 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | struct inquiry_entry *e; |
| 408 | |
| 409 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 410 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 411 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 413 | return e; |
| 414 | } |
| 415 | |
| 416 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | } |
| 418 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 419 | 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] | 420 | bdaddr_t *bdaddr) |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 421 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 422 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 423 | struct inquiry_entry *e; |
| 424 | |
| 425 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 426 | |
| 427 | list_for_each_entry(e, &cache->unknown, list) { |
| 428 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 429 | return e; |
| 430 | } |
| 431 | |
| 432 | return NULL; |
| 433 | } |
| 434 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 435 | 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] | 436 | bdaddr_t *bdaddr, |
| 437 | int state) |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 438 | { |
| 439 | struct discovery_state *cache = &hdev->discovery; |
| 440 | struct inquiry_entry *e; |
| 441 | |
| 442 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); |
| 443 | |
| 444 | list_for_each_entry(e, &cache->resolve, list) { |
| 445 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) |
| 446 | return e; |
| 447 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 448 | return e; |
| 449 | } |
| 450 | |
| 451 | return NULL; |
| 452 | } |
| 453 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 454 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 455 | struct inquiry_entry *ie) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 456 | { |
| 457 | struct discovery_state *cache = &hdev->discovery; |
| 458 | struct list_head *pos = &cache->resolve; |
| 459 | struct inquiry_entry *p; |
| 460 | |
| 461 | list_del(&ie->list); |
| 462 | |
| 463 | list_for_each_entry(p, &cache->resolve, list) { |
| 464 | if (p->name_state != NAME_PENDING && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 465 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 466 | break; |
| 467 | pos = &p->list; |
| 468 | } |
| 469 | |
| 470 | list_add(&ie->list, pos); |
| 471 | } |
| 472 | |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 473 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 474 | bool name_known, bool *ssp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 476 | struct discovery_state *cache = &hdev->discovery; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 477 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); |
| 480 | |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 481 | if (ssp) |
| 482 | *ssp = data->ssp_mode; |
| 483 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 484 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 485 | if (ie) { |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 486 | if (ie->data.ssp_mode && ssp) |
| 487 | *ssp = true; |
| 488 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 489 | if (ie->name_state == NAME_NEEDED && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 490 | data->rssi != ie->data.rssi) { |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 491 | ie->data.rssi = data->rssi; |
| 492 | hci_inquiry_cache_update_resolve(hdev, ie); |
| 493 | } |
| 494 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 495 | goto update; |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 496 | } |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 497 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 498 | /* Entry not in the cache. Add new one. */ |
| 499 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 500 | if (!ie) |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 501 | return false; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 502 | |
| 503 | list_add(&ie->all, &cache->all); |
| 504 | |
| 505 | if (name_known) { |
| 506 | ie->name_state = NAME_KNOWN; |
| 507 | } else { |
| 508 | ie->name_state = NAME_NOT_KNOWN; |
| 509 | list_add(&ie->list, &cache->unknown); |
| 510 | } |
| 511 | |
| 512 | update: |
| 513 | if (name_known && ie->name_state != NAME_KNOWN && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 514 | ie->name_state != NAME_PENDING) { |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 515 | ie->name_state = NAME_KNOWN; |
| 516 | list_del(&ie->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 519 | memcpy(&ie->data, data, sizeof(*data)); |
| 520 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | cache->timestamp = jiffies; |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 522 | |
| 523 | if (ie->name_state == NAME_NOT_KNOWN) |
| 524 | return false; |
| 525 | |
| 526 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 530 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 531 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 533 | struct inquiry_entry *e; |
| 534 | int copied = 0; |
| 535 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 536 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | struct inquiry_data *data = &e->data; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 538 | |
| 539 | if (copied >= num) |
| 540 | break; |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | bacpy(&info->bdaddr, &data->bdaddr); |
| 543 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 544 | info->pscan_period_mode = data->pscan_period_mode; |
| 545 | info->pscan_mode = data->pscan_mode; |
| 546 | memcpy(info->dev_class, data->dev_class, 3); |
| 547 | info->clock_offset = data->clock_offset; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | info++; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 550 | copied++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | BT_DBG("cache %p, copied %d", cache, copied); |
| 554 | return copied; |
| 555 | } |
| 556 | |
| 557 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 558 | { |
| 559 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 560 | struct hci_cp_inquiry cp; |
| 561 | |
| 562 | BT_DBG("%s", hdev->name); |
| 563 | |
| 564 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 565 | return; |
| 566 | |
| 567 | /* Start Inquiry */ |
| 568 | memcpy(&cp.lap, &ir->lap, 3); |
| 569 | cp.length = ir->length; |
| 570 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 571 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | int hci_inquiry(void __user *arg) |
| 575 | { |
| 576 | __u8 __user *ptr = arg; |
| 577 | struct hci_inquiry_req ir; |
| 578 | struct hci_dev *hdev; |
| 579 | int err = 0, do_inquiry = 0, max_rsp; |
| 580 | long timeo; |
| 581 | __u8 *buf; |
| 582 | |
| 583 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 584 | return -EFAULT; |
| 585 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 586 | hdev = hci_dev_get(ir.dev_id); |
| 587 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | return -ENODEV; |
| 589 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 590 | hci_dev_lock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 591 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 592 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | inquiry_cache_flush(hdev); |
| 594 | do_inquiry = 1; |
| 595 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 596 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 598 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 599 | |
| 600 | if (do_inquiry) { |
| 601 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 602 | if (err < 0) |
| 603 | goto done; |
| 604 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 606 | /* for unlimited number of responses we will use buffer with |
| 607 | * 255 entries |
| 608 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 610 | |
| 611 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 612 | * copy it to the user space. |
| 613 | */ |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 614 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 615 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | err = -ENOMEM; |
| 617 | goto done; |
| 618 | } |
| 619 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 620 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 622 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
| 624 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 625 | |
| 626 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 627 | ptr += sizeof(ir); |
| 628 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 629 | ir.num_rsp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 631 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | err = -EFAULT; |
| 633 | |
| 634 | kfree(buf); |
| 635 | |
| 636 | done: |
| 637 | hci_dev_put(hdev); |
| 638 | return err; |
| 639 | } |
| 640 | |
| 641 | /* ---- HCI ioctl helpers ---- */ |
| 642 | |
| 643 | int hci_dev_open(__u16 dev) |
| 644 | { |
| 645 | struct hci_dev *hdev; |
| 646 | int ret = 0; |
| 647 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 648 | hdev = hci_dev_get(dev); |
| 649 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | return -ENODEV; |
| 651 | |
| 652 | BT_DBG("%s %p", hdev->name, hdev); |
| 653 | |
| 654 | hci_req_lock(hdev); |
| 655 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 656 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
| 657 | ret = -ENODEV; |
| 658 | goto done; |
| 659 | } |
| 660 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 661 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 662 | ret = -ERFKILL; |
| 663 | goto done; |
| 664 | } |
| 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 667 | ret = -EALREADY; |
| 668 | goto done; |
| 669 | } |
| 670 | |
| 671 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 672 | set_bit(HCI_RAW, &hdev->flags); |
| 673 | |
Andrei Emeltchenko | 07e3b94 | 2011-11-11 17:02:15 +0200 | [diff] [blame] | 674 | /* Treat all non BR/EDR controllers as raw devices if |
| 675 | enable_hs is not set */ |
| 676 | if (hdev->dev_type != HCI_BREDR && !enable_hs) |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 677 | set_bit(HCI_RAW, &hdev->flags); |
| 678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | if (hdev->open(hdev)) { |
| 680 | ret = -EIO; |
| 681 | goto done; |
| 682 | } |
| 683 | |
| 684 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 685 | atomic_set(&hdev->cmd_cnt, 1); |
| 686 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 687 | hdev->init_last_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 689 | ret = __hci_request(hdev, hci_init_req, 0, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 690 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
Andre Guedes | eead27d | 2011-06-30 19:20:55 -0300 | [diff] [blame] | 692 | if (lmp_host_le_capable(hdev)) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 693 | ret = __hci_request(hdev, hci_le_init_req, 0, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 694 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | clear_bit(HCI_INIT, &hdev->flags); |
| 697 | } |
| 698 | |
| 699 | if (!ret) { |
| 700 | hci_dev_hold(hdev); |
| 701 | set_bit(HCI_UP, &hdev->flags); |
| 702 | hci_notify(hdev, HCI_DEV_UP); |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 703 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 704 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 705 | mgmt_powered(hdev, 1); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 706 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 707 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 708 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | /* Init failed, cleanup */ |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 710 | flush_work(&hdev->tx_work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 711 | flush_work(&hdev->cmd_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 712 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | skb_queue_purge(&hdev->cmd_q); |
| 715 | skb_queue_purge(&hdev->rx_q); |
| 716 | |
| 717 | if (hdev->flush) |
| 718 | hdev->flush(hdev); |
| 719 | |
| 720 | if (hdev->sent_cmd) { |
| 721 | kfree_skb(hdev->sent_cmd); |
| 722 | hdev->sent_cmd = NULL; |
| 723 | } |
| 724 | |
| 725 | hdev->close(hdev); |
| 726 | hdev->flags = 0; |
| 727 | } |
| 728 | |
| 729 | done: |
| 730 | hci_req_unlock(hdev); |
| 731 | hci_dev_put(hdev); |
| 732 | return ret; |
| 733 | } |
| 734 | |
| 735 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 736 | { |
| 737 | BT_DBG("%s %p", hdev->name, hdev); |
| 738 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 739 | cancel_work_sync(&hdev->le_scan); |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | hci_req_cancel(hdev, ENODEV); |
| 742 | hci_req_lock(hdev); |
| 743 | |
| 744 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 745 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | hci_req_unlock(hdev); |
| 747 | return 0; |
| 748 | } |
| 749 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 750 | /* Flush RX and TX works */ |
| 751 | flush_work(&hdev->tx_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 752 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 754 | if (hdev->discov_timeout > 0) { |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 755 | cancel_delayed_work(&hdev->discov_off); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 756 | hdev->discov_timeout = 0; |
Johan Hedberg | 5e5282b | 2012-02-21 16:01:30 +0200 | [diff] [blame] | 757 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 758 | } |
| 759 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 760 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
Johan Hedberg | 7d78525 | 2011-12-15 00:47:39 +0200 | [diff] [blame] | 761 | cancel_delayed_work(&hdev->service_cache); |
| 762 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 763 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
| 764 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 765 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | inquiry_cache_flush(hdev); |
| 767 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 768 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | |
| 770 | hci_notify(hdev, HCI_DEV_DOWN); |
| 771 | |
| 772 | if (hdev->flush) |
| 773 | hdev->flush(hdev); |
| 774 | |
| 775 | /* Reset device */ |
| 776 | skb_queue_purge(&hdev->cmd_q); |
| 777 | atomic_set(&hdev->cmd_cnt, 1); |
Johan Hedberg | 8af5946 | 2012-02-03 21:29:40 +0200 | [diff] [blame] | 778 | if (!test_bit(HCI_RAW, &hdev->flags) && |
Szymon Janc | a6c511c | 2012-05-23 12:35:46 +0200 | [diff] [blame] | 779 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | set_bit(HCI_INIT, &hdev->flags); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 781 | __hci_request(hdev, hci_reset_req, 0, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 782 | msecs_to_jiffies(250)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | clear_bit(HCI_INIT, &hdev->flags); |
| 784 | } |
| 785 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 786 | /* flush cmd work */ |
| 787 | flush_work(&hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
| 789 | /* Drop queues */ |
| 790 | skb_queue_purge(&hdev->rx_q); |
| 791 | skb_queue_purge(&hdev->cmd_q); |
| 792 | skb_queue_purge(&hdev->raw_q); |
| 793 | |
| 794 | /* Drop last sent command */ |
| 795 | if (hdev->sent_cmd) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 796 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | kfree_skb(hdev->sent_cmd); |
| 798 | hdev->sent_cmd = NULL; |
| 799 | } |
| 800 | |
| 801 | /* After this point our queues are empty |
| 802 | * and no tasks are scheduled. */ |
| 803 | hdev->close(hdev); |
| 804 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 805 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
| 806 | hci_dev_lock(hdev); |
| 807 | mgmt_powered(hdev, 0); |
| 808 | hci_dev_unlock(hdev); |
| 809 | } |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | /* Clear flags */ |
| 812 | hdev->flags = 0; |
| 813 | |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 814 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
Johan Hedberg | 09b3c3f | 2012-02-22 22:01:41 +0200 | [diff] [blame] | 815 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 816 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | hci_req_unlock(hdev); |
| 818 | |
| 819 | hci_dev_put(hdev); |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | int hci_dev_close(__u16 dev) |
| 824 | { |
| 825 | struct hci_dev *hdev; |
| 826 | int err; |
| 827 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 828 | hdev = hci_dev_get(dev); |
| 829 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | return -ENODEV; |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 831 | |
| 832 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
| 833 | cancel_delayed_work(&hdev->power_off); |
| 834 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | err = hci_dev_do_close(hdev); |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 836 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | hci_dev_put(hdev); |
| 838 | return err; |
| 839 | } |
| 840 | |
| 841 | int hci_dev_reset(__u16 dev) |
| 842 | { |
| 843 | struct hci_dev *hdev; |
| 844 | int ret = 0; |
| 845 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 846 | hdev = hci_dev_get(dev); |
| 847 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | return -ENODEV; |
| 849 | |
| 850 | hci_req_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
| 852 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 853 | goto done; |
| 854 | |
| 855 | /* Drop queues */ |
| 856 | skb_queue_purge(&hdev->rx_q); |
| 857 | skb_queue_purge(&hdev->cmd_q); |
| 858 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 859 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | inquiry_cache_flush(hdev); |
| 861 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 862 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
| 864 | if (hdev->flush) |
| 865 | hdev->flush(hdev); |
| 866 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 867 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 868 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | |
| 870 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 871 | ret = __hci_request(hdev, hci_reset_req, 0, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 872 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
| 874 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | hci_req_unlock(hdev); |
| 876 | hci_dev_put(hdev); |
| 877 | return ret; |
| 878 | } |
| 879 | |
| 880 | int hci_dev_reset_stat(__u16 dev) |
| 881 | { |
| 882 | struct hci_dev *hdev; |
| 883 | int ret = 0; |
| 884 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 885 | hdev = hci_dev_get(dev); |
| 886 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | return -ENODEV; |
| 888 | |
| 889 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 890 | |
| 891 | hci_dev_put(hdev); |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | |
| 896 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 897 | { |
| 898 | struct hci_dev *hdev; |
| 899 | struct hci_dev_req dr; |
| 900 | int err = 0; |
| 901 | |
| 902 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 903 | return -EFAULT; |
| 904 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 905 | hdev = hci_dev_get(dr.dev_id); |
| 906 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | return -ENODEV; |
| 908 | |
| 909 | switch (cmd) { |
| 910 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 911 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 912 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | break; |
| 914 | |
| 915 | case HCISETENCRYPT: |
| 916 | if (!lmp_encrypt_capable(hdev)) { |
| 917 | err = -EOPNOTSUPP; |
| 918 | break; |
| 919 | } |
| 920 | |
| 921 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 922 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 923 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 924 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | if (err) |
| 926 | break; |
| 927 | } |
| 928 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 929 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 930 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | break; |
| 932 | |
| 933 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 934 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 935 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | break; |
| 937 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 938 | case HCISETLINKPOL: |
| 939 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 940 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 941 | break; |
| 942 | |
| 943 | case HCISETLINKMODE: |
| 944 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 945 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 946 | break; |
| 947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | case HCISETPTYPE: |
| 949 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 950 | break; |
| 951 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 953 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 954 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | break; |
| 956 | |
| 957 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 958 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 959 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | break; |
| 961 | |
| 962 | default: |
| 963 | err = -EINVAL; |
| 964 | break; |
| 965 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | hci_dev_put(hdev); |
| 968 | return err; |
| 969 | } |
| 970 | |
| 971 | int hci_get_dev_list(void __user *arg) |
| 972 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 973 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | struct hci_dev_list_req *dl; |
| 975 | struct hci_dev_req *dr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | int n = 0, size, err; |
| 977 | __u16 dev_num; |
| 978 | |
| 979 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 980 | return -EFAULT; |
| 981 | |
| 982 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 983 | return -EINVAL; |
| 984 | |
| 985 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 986 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 987 | dl = kzalloc(size, GFP_KERNEL); |
| 988 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | return -ENOMEM; |
| 990 | |
| 991 | dr = dl->dev_req; |
| 992 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 993 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 994 | list_for_each_entry(hdev, &hci_dev_list, list) { |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 995 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 996 | cancel_delayed_work(&hdev->power_off); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 997 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 998 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 999 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | (dr + n)->dev_id = hdev->id; |
| 1002 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1003 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | if (++n >= dev_num) |
| 1005 | break; |
| 1006 | } |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1007 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | |
| 1009 | dl->dev_num = n; |
| 1010 | size = sizeof(*dl) + n * sizeof(*dr); |
| 1011 | |
| 1012 | err = copy_to_user(arg, dl, size); |
| 1013 | kfree(dl); |
| 1014 | |
| 1015 | return err ? -EFAULT : 0; |
| 1016 | } |
| 1017 | |
| 1018 | int hci_get_dev_info(void __user *arg) |
| 1019 | { |
| 1020 | struct hci_dev *hdev; |
| 1021 | struct hci_dev_info di; |
| 1022 | int err = 0; |
| 1023 | |
| 1024 | if (copy_from_user(&di, arg, sizeof(di))) |
| 1025 | return -EFAULT; |
| 1026 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1027 | hdev = hci_dev_get(di.dev_id); |
| 1028 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | return -ENODEV; |
| 1030 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1031 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1032 | cancel_delayed_work_sync(&hdev->power_off); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1033 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1034 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 1035 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | strcpy(di.name, hdev->name); |
| 1038 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 1039 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | di.flags = hdev->flags; |
| 1041 | di.pkt_type = hdev->pkt_type; |
| 1042 | di.acl_mtu = hdev->acl_mtu; |
| 1043 | di.acl_pkts = hdev->acl_pkts; |
| 1044 | di.sco_mtu = hdev->sco_mtu; |
| 1045 | di.sco_pkts = hdev->sco_pkts; |
| 1046 | di.link_policy = hdev->link_policy; |
| 1047 | di.link_mode = hdev->link_mode; |
| 1048 | |
| 1049 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 1050 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 1051 | |
| 1052 | if (copy_to_user(arg, &di, sizeof(di))) |
| 1053 | err = -EFAULT; |
| 1054 | |
| 1055 | hci_dev_put(hdev); |
| 1056 | |
| 1057 | return err; |
| 1058 | } |
| 1059 | |
| 1060 | /* ---- Interface to HCI drivers ---- */ |
| 1061 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1062 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 1063 | { |
| 1064 | struct hci_dev *hdev = data; |
| 1065 | |
| 1066 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 1067 | |
| 1068 | if (!blocked) |
| 1069 | return 0; |
| 1070 | |
| 1071 | hci_dev_do_close(hdev); |
| 1072 | |
| 1073 | return 0; |
| 1074 | } |
| 1075 | |
| 1076 | static const struct rfkill_ops hci_rfkill_ops = { |
| 1077 | .set_block = hci_rfkill_set_block, |
| 1078 | }; |
| 1079 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1080 | static void hci_power_on(struct work_struct *work) |
| 1081 | { |
| 1082 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
| 1083 | |
| 1084 | BT_DBG("%s", hdev->name); |
| 1085 | |
| 1086 | if (hci_dev_open(hdev->id) < 0) |
| 1087 | return; |
| 1088 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1089 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Gustavo F. Padovan | 80b7ab3 | 2011-12-17 14:52:27 -0200 | [diff] [blame] | 1090 | schedule_delayed_work(&hdev->power_off, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1091 | msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1092 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1093 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1094 | mgmt_index_added(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1095 | } |
| 1096 | |
| 1097 | static void hci_power_off(struct work_struct *work) |
| 1098 | { |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1099 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1100 | power_off.work); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1101 | |
| 1102 | BT_DBG("%s", hdev->name); |
| 1103 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1104 | hci_dev_do_close(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1105 | } |
| 1106 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1107 | static void hci_discov_off(struct work_struct *work) |
| 1108 | { |
| 1109 | struct hci_dev *hdev; |
| 1110 | u8 scan = SCAN_PAGE; |
| 1111 | |
| 1112 | hdev = container_of(work, struct hci_dev, discov_off.work); |
| 1113 | |
| 1114 | BT_DBG("%s", hdev->name); |
| 1115 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1116 | hci_dev_lock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1117 | |
| 1118 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); |
| 1119 | |
| 1120 | hdev->discov_timeout = 0; |
| 1121 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1122 | hci_dev_unlock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1123 | } |
| 1124 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1125 | int hci_uuids_clear(struct hci_dev *hdev) |
| 1126 | { |
| 1127 | struct list_head *p, *n; |
| 1128 | |
| 1129 | list_for_each_safe(p, n, &hdev->uuids) { |
| 1130 | struct bt_uuid *uuid; |
| 1131 | |
| 1132 | uuid = list_entry(p, struct bt_uuid, list); |
| 1133 | |
| 1134 | list_del(p); |
| 1135 | kfree(uuid); |
| 1136 | } |
| 1137 | |
| 1138 | return 0; |
| 1139 | } |
| 1140 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1141 | int hci_link_keys_clear(struct hci_dev *hdev) |
| 1142 | { |
| 1143 | struct list_head *p, *n; |
| 1144 | |
| 1145 | list_for_each_safe(p, n, &hdev->link_keys) { |
| 1146 | struct link_key *key; |
| 1147 | |
| 1148 | key = list_entry(p, struct link_key, list); |
| 1149 | |
| 1150 | list_del(p); |
| 1151 | kfree(key); |
| 1152 | } |
| 1153 | |
| 1154 | return 0; |
| 1155 | } |
| 1156 | |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1157 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
| 1158 | { |
| 1159 | struct smp_ltk *k, *tmp; |
| 1160 | |
| 1161 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1162 | list_del(&k->list); |
| 1163 | kfree(k); |
| 1164 | } |
| 1165 | |
| 1166 | return 0; |
| 1167 | } |
| 1168 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1169 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1170 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1171 | struct link_key *k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1172 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1173 | list_for_each_entry(k, &hdev->link_keys, list) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1174 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
| 1175 | return k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1176 | |
| 1177 | return NULL; |
| 1178 | } |
| 1179 | |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1180 | 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] | 1181 | u8 key_type, u8 old_key_type) |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1182 | { |
| 1183 | /* Legacy key */ |
| 1184 | if (key_type < 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1185 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1186 | |
| 1187 | /* Debug keys are insecure so don't store them persistently */ |
| 1188 | if (key_type == HCI_LK_DEBUG_COMBINATION) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1189 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1190 | |
| 1191 | /* Changed combination key and there's no previous one */ |
| 1192 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1193 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1194 | |
| 1195 | /* Security mode 3 case */ |
| 1196 | if (!conn) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1197 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1198 | |
| 1199 | /* Neither local nor remote side had no-bonding as requirement */ |
| 1200 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1201 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1202 | |
| 1203 | /* Local side had dedicated bonding as requirement */ |
| 1204 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1205 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1206 | |
| 1207 | /* Remote side had dedicated bonding as requirement */ |
| 1208 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1209 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1210 | |
| 1211 | /* If none of the above criteria match, then don't store the key |
| 1212 | * persistently */ |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1213 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1216 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1217 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1218 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1219 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1220 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
| 1221 | if (k->ediv != ediv || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1222 | memcmp(rand, k->rand, sizeof(k->rand))) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1223 | continue; |
| 1224 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1225 | return k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1226 | } |
| 1227 | |
| 1228 | return NULL; |
| 1229 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1230 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1231 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1232 | u8 addr_type) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1233 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1234 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1235 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1236 | list_for_each_entry(k, &hdev->long_term_keys, list) |
| 1237 | if (addr_type == k->bdaddr_type && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1238 | bacmp(bdaddr, &k->bdaddr) == 0) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1239 | return k; |
| 1240 | |
| 1241 | return NULL; |
| 1242 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1243 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1244 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1245 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1246 | { |
| 1247 | struct link_key *key, *old_key; |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1248 | u8 old_key_type; |
| 1249 | bool persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1250 | |
| 1251 | old_key = hci_find_link_key(hdev, bdaddr); |
| 1252 | if (old_key) { |
| 1253 | old_key_type = old_key->type; |
| 1254 | key = old_key; |
| 1255 | } else { |
Johan Hedberg | 12adcf3 | 2011-04-28 11:29:00 -0700 | [diff] [blame] | 1256 | old_key_type = conn ? conn->key_type : 0xff; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1257 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
| 1258 | if (!key) |
| 1259 | return -ENOMEM; |
| 1260 | list_add(&key->list, &hdev->link_keys); |
| 1261 | } |
| 1262 | |
| 1263 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); |
| 1264 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1265 | /* Some buggy controller combinations generate a changed |
| 1266 | * combination key for legacy pairing even when there's no |
| 1267 | * previous key */ |
| 1268 | if (type == HCI_LK_CHANGED_COMBINATION && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1269 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1270 | type = HCI_LK_COMBINATION; |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 1271 | if (conn) |
| 1272 | conn->key_type = type; |
| 1273 | } |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1274 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1275 | bacpy(&key->bdaddr, bdaddr); |
Andrei Emeltchenko | 9b3b446 | 2012-05-23 11:31:20 +0300 | [diff] [blame] | 1276 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1277 | key->pin_len = pin_len; |
| 1278 | |
Waldemar Rymarkiewicz | b6020ba | 2011-04-28 12:07:53 +0200 | [diff] [blame] | 1279 | if (type == HCI_LK_CHANGED_COMBINATION) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1280 | key->type = old_key_type; |
Johan Hedberg | 4748fed | 2011-04-28 11:29:02 -0700 | [diff] [blame] | 1281 | else |
| 1282 | key->type = type; |
| 1283 | |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1284 | if (!new_key) |
| 1285 | return 0; |
| 1286 | |
| 1287 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); |
| 1288 | |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1289 | mgmt_new_link_key(hdev, key, persistent); |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1290 | |
Vishal Agarwal | 6ec5bca | 2012-04-16 14:44:44 +0530 | [diff] [blame] | 1291 | if (conn) |
| 1292 | conn->flush_key = !persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1293 | |
| 1294 | return 0; |
| 1295 | } |
| 1296 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1297 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
Andrei Emeltchenko | 9a00665 | 2012-03-09 12:12:12 +0200 | [diff] [blame] | 1298 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1299 | ediv, u8 rand[8]) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1300 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1301 | struct smp_ltk *key, *old_key; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1302 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1303 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
| 1304 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1305 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1306 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
| 1307 | if (old_key) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1308 | key = old_key; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1309 | else { |
| 1310 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1311 | if (!key) |
| 1312 | return -ENOMEM; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1313 | list_add(&key->list, &hdev->long_term_keys); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1314 | } |
| 1315 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1316 | bacpy(&key->bdaddr, bdaddr); |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1317 | key->bdaddr_type = addr_type; |
| 1318 | memcpy(key->val, tk, sizeof(key->val)); |
| 1319 | key->authenticated = authenticated; |
| 1320 | key->ediv = ediv; |
| 1321 | key->enc_size = enc_size; |
| 1322 | key->type = type; |
| 1323 | memcpy(key->rand, rand, sizeof(key->rand)); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1324 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1325 | if (!new_key) |
| 1326 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1327 | |
Vinicius Costa Gomes | 261cc5a | 2012-02-02 21:08:05 -0300 | [diff] [blame] | 1328 | if (type & HCI_SMP_LTK) |
| 1329 | mgmt_new_ltk(hdev, key, 1); |
| 1330 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1331 | return 0; |
| 1332 | } |
| 1333 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1334 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1335 | { |
| 1336 | struct link_key *key; |
| 1337 | |
| 1338 | key = hci_find_link_key(hdev, bdaddr); |
| 1339 | if (!key) |
| 1340 | return -ENOENT; |
| 1341 | |
| 1342 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1343 | |
| 1344 | list_del(&key->list); |
| 1345 | kfree(key); |
| 1346 | |
| 1347 | return 0; |
| 1348 | } |
| 1349 | |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1350 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1351 | { |
| 1352 | struct smp_ltk *k, *tmp; |
| 1353 | |
| 1354 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1355 | if (bacmp(bdaddr, &k->bdaddr)) |
| 1356 | continue; |
| 1357 | |
| 1358 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1359 | |
| 1360 | list_del(&k->list); |
| 1361 | kfree(k); |
| 1362 | } |
| 1363 | |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1367 | /* HCI command timer function */ |
| 1368 | static void hci_cmd_timer(unsigned long arg) |
| 1369 | { |
| 1370 | struct hci_dev *hdev = (void *) arg; |
| 1371 | |
| 1372 | BT_ERR("%s command tx timeout", hdev->name); |
| 1373 | atomic_set(&hdev->cmd_cnt, 1); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1374 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1375 | } |
| 1376 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1377 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1378 | bdaddr_t *bdaddr) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1379 | { |
| 1380 | struct oob_data *data; |
| 1381 | |
| 1382 | list_for_each_entry(data, &hdev->remote_oob_data, list) |
| 1383 | if (bacmp(bdaddr, &data->bdaddr) == 0) |
| 1384 | return data; |
| 1385 | |
| 1386 | return NULL; |
| 1387 | } |
| 1388 | |
| 1389 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1390 | { |
| 1391 | struct oob_data *data; |
| 1392 | |
| 1393 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1394 | if (!data) |
| 1395 | return -ENOENT; |
| 1396 | |
| 1397 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1398 | |
| 1399 | list_del(&data->list); |
| 1400 | kfree(data); |
| 1401 | |
| 1402 | return 0; |
| 1403 | } |
| 1404 | |
| 1405 | int hci_remote_oob_data_clear(struct hci_dev *hdev) |
| 1406 | { |
| 1407 | struct oob_data *data, *n; |
| 1408 | |
| 1409 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 1410 | list_del(&data->list); |
| 1411 | kfree(data); |
| 1412 | } |
| 1413 | |
| 1414 | return 0; |
| 1415 | } |
| 1416 | |
| 1417 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1418 | u8 *randomizer) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1419 | { |
| 1420 | struct oob_data *data; |
| 1421 | |
| 1422 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1423 | |
| 1424 | if (!data) { |
| 1425 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
| 1426 | if (!data) |
| 1427 | return -ENOMEM; |
| 1428 | |
| 1429 | bacpy(&data->bdaddr, bdaddr); |
| 1430 | list_add(&data->list, &hdev->remote_oob_data); |
| 1431 | } |
| 1432 | |
| 1433 | memcpy(data->hash, hash, sizeof(data->hash)); |
| 1434 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); |
| 1435 | |
| 1436 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); |
| 1437 | |
| 1438 | return 0; |
| 1439 | } |
| 1440 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1441 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1442 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1443 | struct bdaddr_list *b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1444 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1445 | list_for_each_entry(b, &hdev->blacklist, list) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1446 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
| 1447 | return b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1448 | |
| 1449 | return NULL; |
| 1450 | } |
| 1451 | |
| 1452 | int hci_blacklist_clear(struct hci_dev *hdev) |
| 1453 | { |
| 1454 | struct list_head *p, *n; |
| 1455 | |
| 1456 | list_for_each_safe(p, n, &hdev->blacklist) { |
| 1457 | struct bdaddr_list *b; |
| 1458 | |
| 1459 | b = list_entry(p, struct bdaddr_list, list); |
| 1460 | |
| 1461 | list_del(p); |
| 1462 | kfree(b); |
| 1463 | } |
| 1464 | |
| 1465 | return 0; |
| 1466 | } |
| 1467 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1468 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1469 | { |
| 1470 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1471 | |
| 1472 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
| 1473 | return -EBADF; |
| 1474 | |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1475 | if (hci_blacklist_lookup(hdev, bdaddr)) |
| 1476 | return -EEXIST; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1477 | |
| 1478 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1479 | if (!entry) |
| 1480 | return -ENOMEM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1481 | |
| 1482 | bacpy(&entry->bdaddr, bdaddr); |
| 1483 | |
| 1484 | list_add(&entry->list, &hdev->blacklist); |
| 1485 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1486 | return mgmt_device_blocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1487 | } |
| 1488 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1489 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1490 | { |
| 1491 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1492 | |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1493 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1494 | return hci_blacklist_clear(hdev); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1495 | |
| 1496 | entry = hci_blacklist_lookup(hdev, bdaddr); |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1497 | if (!entry) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1498 | return -ENOENT; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1499 | |
| 1500 | list_del(&entry->list); |
| 1501 | kfree(entry); |
| 1502 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1503 | return mgmt_device_unblocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1504 | } |
| 1505 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1506 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
| 1507 | { |
| 1508 | struct le_scan_params *param = (struct le_scan_params *) opt; |
| 1509 | struct hci_cp_le_set_scan_param cp; |
| 1510 | |
| 1511 | memset(&cp, 0, sizeof(cp)); |
| 1512 | cp.type = param->type; |
| 1513 | cp.interval = cpu_to_le16(param->interval); |
| 1514 | cp.window = cpu_to_le16(param->window); |
| 1515 | |
| 1516 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); |
| 1517 | } |
| 1518 | |
| 1519 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) |
| 1520 | { |
| 1521 | struct hci_cp_le_set_scan_enable cp; |
| 1522 | |
| 1523 | memset(&cp, 0, sizeof(cp)); |
| 1524 | cp.enable = 1; |
| 1525 | |
| 1526 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1527 | } |
| 1528 | |
| 1529 | static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1530 | u16 window, int timeout) |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1531 | { |
| 1532 | long timeo = msecs_to_jiffies(3000); |
| 1533 | struct le_scan_params param; |
| 1534 | int err; |
| 1535 | |
| 1536 | BT_DBG("%s", hdev->name); |
| 1537 | |
| 1538 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1539 | return -EINPROGRESS; |
| 1540 | |
| 1541 | param.type = type; |
| 1542 | param.interval = interval; |
| 1543 | param.window = window; |
| 1544 | |
| 1545 | hci_req_lock(hdev); |
| 1546 | |
| 1547 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1548 | timeo); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1549 | if (!err) |
| 1550 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); |
| 1551 | |
| 1552 | hci_req_unlock(hdev); |
| 1553 | |
| 1554 | if (err < 0) |
| 1555 | return err; |
| 1556 | |
| 1557 | schedule_delayed_work(&hdev->le_scan_disable, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1558 | msecs_to_jiffies(timeout)); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1559 | |
| 1560 | return 0; |
| 1561 | } |
| 1562 | |
Andre Guedes | 7dbfac1 | 2012-03-15 16:52:07 -0300 | [diff] [blame] | 1563 | int hci_cancel_le_scan(struct hci_dev *hdev) |
| 1564 | { |
| 1565 | BT_DBG("%s", hdev->name); |
| 1566 | |
| 1567 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1568 | return -EALREADY; |
| 1569 | |
| 1570 | if (cancel_delayed_work(&hdev->le_scan_disable)) { |
| 1571 | struct hci_cp_le_set_scan_enable cp; |
| 1572 | |
| 1573 | /* Send HCI command to disable LE Scan */ |
| 1574 | memset(&cp, 0, sizeof(cp)); |
| 1575 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1576 | } |
| 1577 | |
| 1578 | return 0; |
| 1579 | } |
| 1580 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1581 | static void le_scan_disable_work(struct work_struct *work) |
| 1582 | { |
| 1583 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1584 | le_scan_disable.work); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1585 | struct hci_cp_le_set_scan_enable cp; |
| 1586 | |
| 1587 | BT_DBG("%s", hdev->name); |
| 1588 | |
| 1589 | memset(&cp, 0, sizeof(cp)); |
| 1590 | |
| 1591 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1592 | } |
| 1593 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1594 | static void le_scan_work(struct work_struct *work) |
| 1595 | { |
| 1596 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); |
| 1597 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1598 | |
| 1599 | BT_DBG("%s", hdev->name); |
| 1600 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1601 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
| 1602 | param->timeout); |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1603 | } |
| 1604 | |
| 1605 | int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1606 | int timeout) |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1607 | { |
| 1608 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1609 | |
| 1610 | BT_DBG("%s", hdev->name); |
| 1611 | |
| 1612 | if (work_busy(&hdev->le_scan)) |
| 1613 | return -EINPROGRESS; |
| 1614 | |
| 1615 | param->type = type; |
| 1616 | param->interval = interval; |
| 1617 | param->window = window; |
| 1618 | param->timeout = timeout; |
| 1619 | |
| 1620 | queue_work(system_long_wq, &hdev->le_scan); |
| 1621 | |
| 1622 | return 0; |
| 1623 | } |
| 1624 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1625 | /* Alloc HCI device */ |
| 1626 | struct hci_dev *hci_alloc_dev(void) |
| 1627 | { |
| 1628 | struct hci_dev *hdev; |
| 1629 | |
| 1630 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
| 1631 | if (!hdev) |
| 1632 | return NULL; |
| 1633 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1634 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
| 1635 | hdev->esco_type = (ESCO_HV1); |
| 1636 | hdev->link_mode = (HCI_LM_ACCEPT); |
| 1637 | hdev->io_capability = 0x03; /* No Input No Output */ |
| 1638 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1639 | hdev->sniff_max_interval = 800; |
| 1640 | hdev->sniff_min_interval = 80; |
| 1641 | |
| 1642 | mutex_init(&hdev->lock); |
| 1643 | mutex_init(&hdev->req_lock); |
| 1644 | |
| 1645 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
| 1646 | INIT_LIST_HEAD(&hdev->blacklist); |
| 1647 | INIT_LIST_HEAD(&hdev->uuids); |
| 1648 | INIT_LIST_HEAD(&hdev->link_keys); |
| 1649 | INIT_LIST_HEAD(&hdev->long_term_keys); |
| 1650 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1651 | |
| 1652 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
| 1653 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
| 1654 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
| 1655 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1656 | INIT_WORK(&hdev->le_scan, le_scan_work); |
| 1657 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1658 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
| 1659 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
| 1660 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); |
| 1661 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1662 | skb_queue_head_init(&hdev->driver_init); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1663 | skb_queue_head_init(&hdev->rx_q); |
| 1664 | skb_queue_head_init(&hdev->cmd_q); |
| 1665 | skb_queue_head_init(&hdev->raw_q); |
| 1666 | |
| 1667 | init_waitqueue_head(&hdev->req_wait_q); |
| 1668 | |
| 1669 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); |
| 1670 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1671 | hci_init_sysfs(hdev); |
| 1672 | discovery_init(hdev); |
| 1673 | hci_conn_hash_init(hdev); |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1674 | |
| 1675 | return hdev; |
| 1676 | } |
| 1677 | EXPORT_SYMBOL(hci_alloc_dev); |
| 1678 | |
| 1679 | /* Free HCI device */ |
| 1680 | void hci_free_dev(struct hci_dev *hdev) |
| 1681 | { |
| 1682 | skb_queue_purge(&hdev->driver_init); |
| 1683 | |
| 1684 | /* will free via device release */ |
| 1685 | put_device(&hdev->dev); |
| 1686 | } |
| 1687 | EXPORT_SYMBOL(hci_free_dev); |
| 1688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | /* Register HCI device */ |
| 1690 | int hci_register_dev(struct hci_dev *hdev) |
| 1691 | { |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1692 | struct list_head *head, *p; |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1693 | int id, error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | |
David Herrmann | 010666a | 2012-01-07 15:47:07 +0100 | [diff] [blame] | 1695 | if (!hdev->open || !hdev->close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | return -EINVAL; |
| 1697 | |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1698 | write_lock(&hci_dev_list_lock); |
| 1699 | |
Mat Martineau | 08add51 | 2011-11-02 16:18:36 -0700 | [diff] [blame] | 1700 | /* Do not allow HCI_AMP devices to register at index 0, |
| 1701 | * so the index can be used as the AMP controller ID. |
| 1702 | */ |
| 1703 | id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1704 | head = &hci_dev_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | |
| 1706 | /* Find first available device id */ |
| 1707 | list_for_each(p, &hci_dev_list) { |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1708 | int nid = list_entry(p, struct hci_dev, list)->id; |
| 1709 | if (nid > id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | break; |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1711 | if (nid == id) |
| 1712 | id++; |
| 1713 | head = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1715 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | sprintf(hdev->name, "hci%d", id); |
| 1717 | hdev->id = id; |
Andrei Emeltchenko | 2d8b3a1 | 2012-04-16 16:32:04 +0300 | [diff] [blame] | 1718 | |
| 1719 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
| 1720 | |
Ulisses Furquim | fc50744 | 2012-04-18 12:13:04 -0300 | [diff] [blame] | 1721 | list_add(&hdev->list, head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1723 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | |
Gustavo F. Padovan | 32845eb | 2011-12-17 17:47:30 -0200 | [diff] [blame] | 1725 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1726 | WQ_MEM_RECLAIM, 1); |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1727 | if (!hdev->workqueue) { |
| 1728 | error = -ENOMEM; |
| 1729 | goto err; |
| 1730 | } |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1731 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1732 | error = hci_add_sysfs(hdev); |
| 1733 | if (error < 0) |
| 1734 | goto err_wqueue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1736 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1737 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
| 1738 | hdev); |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1739 | if (hdev->rfkill) { |
| 1740 | if (rfkill_register(hdev->rfkill) < 0) { |
| 1741 | rfkill_destroy(hdev->rfkill); |
| 1742 | hdev->rfkill = NULL; |
| 1743 | } |
| 1744 | } |
| 1745 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1746 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
| 1747 | set_bit(HCI_SETUP, &hdev->dev_flags); |
Gustavo F. Padovan | 7f97104 | 2011-12-18 12:40:32 -0200 | [diff] [blame] | 1748 | schedule_work(&hdev->power_on); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1749 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | hci_notify(hdev, HCI_DEV_REG); |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1751 | hci_dev_hold(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
| 1753 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1754 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1755 | err_wqueue: |
| 1756 | destroy_workqueue(hdev->workqueue); |
| 1757 | err: |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1758 | write_lock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1759 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1760 | write_unlock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1761 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1762 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | } |
| 1764 | EXPORT_SYMBOL(hci_register_dev); |
| 1765 | |
| 1766 | /* Unregister HCI device */ |
David Herrmann | 5973563 | 2011-10-26 10:43:19 +0200 | [diff] [blame] | 1767 | void hci_unregister_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1769 | int i; |
| 1770 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1771 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 1773 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
| 1774 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1775 | write_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1777 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | |
| 1779 | hci_dev_do_close(hdev); |
| 1780 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1781 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1782 | kfree_skb(hdev->reassembly[i]); |
| 1783 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1784 | if (!test_bit(HCI_INIT, &hdev->flags) && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1785 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1786 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1787 | mgmt_index_removed(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1788 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 1789 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1790 | |
Johan Hedberg | 2e58ef3 | 2011-11-08 20:40:15 +0200 | [diff] [blame] | 1791 | /* mgmt_index_removed should take care of emptying the |
| 1792 | * pending list */ |
| 1793 | BUG_ON(!list_empty(&hdev->mgmt_pending)); |
| 1794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1796 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1797 | if (hdev->rfkill) { |
| 1798 | rfkill_unregister(hdev->rfkill); |
| 1799 | rfkill_destroy(hdev->rfkill); |
| 1800 | } |
| 1801 | |
David Herrmann | ce24297 | 2011-10-08 14:58:48 +0200 | [diff] [blame] | 1802 | hci_del_sysfs(hdev); |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1803 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1804 | destroy_workqueue(hdev->workqueue); |
| 1805 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1806 | hci_dev_lock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1807 | hci_blacklist_clear(hdev); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1808 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1809 | hci_link_keys_clear(hdev); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1810 | hci_smp_ltks_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1811 | hci_remote_oob_data_clear(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1812 | hci_dev_unlock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1813 | |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1814 | hci_dev_put(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | } |
| 1816 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1817 | |
| 1818 | /* Suspend HCI device */ |
| 1819 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1820 | { |
| 1821 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1822 | return 0; |
| 1823 | } |
| 1824 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1825 | |
| 1826 | /* Resume HCI device */ |
| 1827 | int hci_resume_dev(struct hci_dev *hdev) |
| 1828 | { |
| 1829 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1830 | return 0; |
| 1831 | } |
| 1832 | EXPORT_SYMBOL(hci_resume_dev); |
| 1833 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1834 | /* Receive frame from HCI drivers */ |
| 1835 | int hci_recv_frame(struct sk_buff *skb) |
| 1836 | { |
| 1837 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1838 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1839 | && !test_bit(HCI_INIT, &hdev->flags))) { |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1840 | kfree_skb(skb); |
| 1841 | return -ENXIO; |
| 1842 | } |
| 1843 | |
| 1844 | /* Incomming skb */ |
| 1845 | bt_cb(skb)->incoming = 1; |
| 1846 | |
| 1847 | /* Time stamp */ |
| 1848 | __net_timestamp(skb); |
| 1849 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1850 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 1851 | queue_work(hdev->workqueue, &hdev->rx_work); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1852 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1853 | return 0; |
| 1854 | } |
| 1855 | EXPORT_SYMBOL(hci_recv_frame); |
| 1856 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1857 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1858 | int count, __u8 index) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1859 | { |
| 1860 | int len = 0; |
| 1861 | int hlen = 0; |
| 1862 | int remain = count; |
| 1863 | struct sk_buff *skb; |
| 1864 | struct bt_skb_cb *scb; |
| 1865 | |
| 1866 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1867 | index >= NUM_REASSEMBLY) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1868 | return -EILSEQ; |
| 1869 | |
| 1870 | skb = hdev->reassembly[index]; |
| 1871 | |
| 1872 | if (!skb) { |
| 1873 | switch (type) { |
| 1874 | case HCI_ACLDATA_PKT: |
| 1875 | len = HCI_MAX_FRAME_SIZE; |
| 1876 | hlen = HCI_ACL_HDR_SIZE; |
| 1877 | break; |
| 1878 | case HCI_EVENT_PKT: |
| 1879 | len = HCI_MAX_EVENT_SIZE; |
| 1880 | hlen = HCI_EVENT_HDR_SIZE; |
| 1881 | break; |
| 1882 | case HCI_SCODATA_PKT: |
| 1883 | len = HCI_MAX_SCO_SIZE; |
| 1884 | hlen = HCI_SCO_HDR_SIZE; |
| 1885 | break; |
| 1886 | } |
| 1887 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1888 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1889 | if (!skb) |
| 1890 | return -ENOMEM; |
| 1891 | |
| 1892 | scb = (void *) skb->cb; |
| 1893 | scb->expect = hlen; |
| 1894 | scb->pkt_type = type; |
| 1895 | |
| 1896 | skb->dev = (void *) hdev; |
| 1897 | hdev->reassembly[index] = skb; |
| 1898 | } |
| 1899 | |
| 1900 | while (count) { |
| 1901 | scb = (void *) skb->cb; |
Dan Carpenter | 89bb46d | 2012-02-28 09:57:59 +0300 | [diff] [blame] | 1902 | len = min_t(uint, scb->expect, count); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1903 | |
| 1904 | memcpy(skb_put(skb, len), data, len); |
| 1905 | |
| 1906 | count -= len; |
| 1907 | data += len; |
| 1908 | scb->expect -= len; |
| 1909 | remain = count; |
| 1910 | |
| 1911 | switch (type) { |
| 1912 | case HCI_EVENT_PKT: |
| 1913 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1914 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1915 | scb->expect = h->plen; |
| 1916 | |
| 1917 | if (skb_tailroom(skb) < scb->expect) { |
| 1918 | kfree_skb(skb); |
| 1919 | hdev->reassembly[index] = NULL; |
| 1920 | return -ENOMEM; |
| 1921 | } |
| 1922 | } |
| 1923 | break; |
| 1924 | |
| 1925 | case HCI_ACLDATA_PKT: |
| 1926 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1927 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1928 | scb->expect = __le16_to_cpu(h->dlen); |
| 1929 | |
| 1930 | if (skb_tailroom(skb) < scb->expect) { |
| 1931 | kfree_skb(skb); |
| 1932 | hdev->reassembly[index] = NULL; |
| 1933 | return -ENOMEM; |
| 1934 | } |
| 1935 | } |
| 1936 | break; |
| 1937 | |
| 1938 | case HCI_SCODATA_PKT: |
| 1939 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1940 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1941 | scb->expect = h->dlen; |
| 1942 | |
| 1943 | if (skb_tailroom(skb) < scb->expect) { |
| 1944 | kfree_skb(skb); |
| 1945 | hdev->reassembly[index] = NULL; |
| 1946 | return -ENOMEM; |
| 1947 | } |
| 1948 | } |
| 1949 | break; |
| 1950 | } |
| 1951 | |
| 1952 | if (scb->expect == 0) { |
| 1953 | /* Complete frame */ |
| 1954 | |
| 1955 | bt_cb(skb)->pkt_type = type; |
| 1956 | hci_recv_frame(skb); |
| 1957 | |
| 1958 | hdev->reassembly[index] = NULL; |
| 1959 | return remain; |
| 1960 | } |
| 1961 | } |
| 1962 | |
| 1963 | return remain; |
| 1964 | } |
| 1965 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1966 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1967 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1968 | int rem = 0; |
| 1969 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1970 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1971 | return -EILSEQ; |
| 1972 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1973 | while (count) { |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1974 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1975 | if (rem < 0) |
| 1976 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1977 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1978 | data += (count - rem); |
| 1979 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 1980 | } |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1981 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1982 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1983 | } |
| 1984 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1985 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1986 | #define STREAM_REASSEMBLY 0 |
| 1987 | |
| 1988 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 1989 | { |
| 1990 | int type; |
| 1991 | int rem = 0; |
| 1992 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1993 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1994 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 1995 | |
| 1996 | if (!skb) { |
| 1997 | struct { char type; } *pkt; |
| 1998 | |
| 1999 | /* Start of the frame */ |
| 2000 | pkt = data; |
| 2001 | type = pkt->type; |
| 2002 | |
| 2003 | data++; |
| 2004 | count--; |
| 2005 | } else |
| 2006 | type = bt_cb(skb)->pkt_type; |
| 2007 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 2008 | rem = hci_reassembly(hdev, type, data, count, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2009 | STREAM_REASSEMBLY); |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2010 | if (rem < 0) |
| 2011 | return rem; |
| 2012 | |
| 2013 | data += (count - rem); |
| 2014 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 2015 | } |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2016 | |
| 2017 | return rem; |
| 2018 | } |
| 2019 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 2020 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | /* ---- Interface to upper protocols ---- */ |
| 2022 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | int hci_register_cb(struct hci_cb *cb) |
| 2024 | { |
| 2025 | BT_DBG("%p name %s", cb, cb->name); |
| 2026 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2027 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | list_add(&cb->list, &hci_cb_list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2029 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | |
| 2031 | return 0; |
| 2032 | } |
| 2033 | EXPORT_SYMBOL(hci_register_cb); |
| 2034 | |
| 2035 | int hci_unregister_cb(struct hci_cb *cb) |
| 2036 | { |
| 2037 | BT_DBG("%p name %s", cb, cb->name); |
| 2038 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2039 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | list_del(&cb->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2041 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | |
| 2043 | return 0; |
| 2044 | } |
| 2045 | EXPORT_SYMBOL(hci_unregister_cb); |
| 2046 | |
| 2047 | static int hci_send_frame(struct sk_buff *skb) |
| 2048 | { |
| 2049 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 2050 | |
| 2051 | if (!hdev) { |
| 2052 | kfree_skb(skb); |
| 2053 | return -ENODEV; |
| 2054 | } |
| 2055 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2056 | 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] | 2057 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2058 | /* Time stamp */ |
| 2059 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2061 | /* Send copy to monitor */ |
| 2062 | hci_send_to_monitor(hdev, skb); |
| 2063 | |
| 2064 | if (atomic_read(&hdev->promisc)) { |
| 2065 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2066 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | } |
| 2068 | |
| 2069 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 2070 | skb_orphan(skb); |
| 2071 | |
| 2072 | return hdev->send(skb); |
| 2073 | } |
| 2074 | |
| 2075 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2076 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | { |
| 2078 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 2079 | struct hci_command_hdr *hdr; |
| 2080 | struct sk_buff *skb; |
| 2081 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2082 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | |
| 2084 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 2085 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 2086 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | return -ENOMEM; |
| 2088 | } |
| 2089 | |
| 2090 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2091 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | hdr->plen = plen; |
| 2093 | |
| 2094 | if (plen) |
| 2095 | memcpy(skb_put(skb, plen), param, plen); |
| 2096 | |
| 2097 | BT_DBG("skb len %d", skb->len); |
| 2098 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2099 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2101 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 2102 | if (test_bit(HCI_INIT, &hdev->flags)) |
| 2103 | hdev->init_last_cmd = opcode; |
| 2104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2106 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | |
| 2108 | return 0; |
| 2109 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | |
| 2111 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2112 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | { |
| 2114 | struct hci_command_hdr *hdr; |
| 2115 | |
| 2116 | if (!hdev->sent_cmd) |
| 2117 | return NULL; |
| 2118 | |
| 2119 | hdr = (void *) hdev->sent_cmd->data; |
| 2120 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2121 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | return NULL; |
| 2123 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2124 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | |
| 2126 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 2127 | } |
| 2128 | |
| 2129 | /* Send ACL data */ |
| 2130 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 2131 | { |
| 2132 | struct hci_acl_hdr *hdr; |
| 2133 | int len = skb->len; |
| 2134 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2135 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 2136 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2137 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2138 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 2139 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | } |
| 2141 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2142 | static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2143 | struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | { |
| 2145 | struct hci_dev *hdev = conn->hdev; |
| 2146 | struct sk_buff *list; |
| 2147 | |
Gustavo Padovan | 087bfd9 | 2012-05-11 13:16:11 -0300 | [diff] [blame] | 2148 | skb->len = skb_headlen(skb); |
| 2149 | skb->data_len = 0; |
| 2150 | |
| 2151 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
| 2152 | hci_add_acl_hdr(skb, conn->handle, flags); |
| 2153 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2154 | list = skb_shinfo(skb)->frag_list; |
| 2155 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | /* Non fragmented */ |
| 2157 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 2158 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2159 | skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | } else { |
| 2161 | /* Fragmented */ |
| 2162 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2163 | |
| 2164 | skb_shinfo(skb)->frag_list = NULL; |
| 2165 | |
| 2166 | /* Queue all fragments atomically */ |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2167 | spin_lock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2169 | __skb_queue_tail(queue, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2170 | |
| 2171 | flags &= ~ACL_START; |
| 2172 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | do { |
| 2174 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2177 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2178 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2179 | |
| 2180 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2181 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2182 | __skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | } while (list); |
| 2184 | |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2185 | spin_unlock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2187 | } |
| 2188 | |
| 2189 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) |
| 2190 | { |
| 2191 | struct hci_conn *conn = chan->conn; |
| 2192 | struct hci_dev *hdev = conn->hdev; |
| 2193 | |
| 2194 | BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); |
| 2195 | |
| 2196 | skb->dev = (void *) hdev; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2197 | |
| 2198 | hci_queue_acl(conn, &chan->data_q, skb, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2200 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | |
| 2203 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 2204 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | { |
| 2206 | struct hci_dev *hdev = conn->hdev; |
| 2207 | struct hci_sco_hdr hdr; |
| 2208 | |
| 2209 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 2210 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2211 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | hdr.dlen = skb->len; |
| 2213 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2214 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 2215 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2216 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | |
| 2218 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2219 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | skb_queue_tail(&conn->data_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2222 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2223 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | |
| 2225 | /* ---- HCI TX task (outgoing data) ---- */ |
| 2226 | |
| 2227 | /* HCI Connection scheduler */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2228 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
| 2229 | int *quote) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | { |
| 2231 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2232 | struct hci_conn *conn = NULL, *c; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2233 | unsigned int num = 0, min = ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2235 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | * added and removed with TX task disabled. */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2237 | |
| 2238 | rcu_read_lock(); |
| 2239 | |
| 2240 | list_for_each_entry_rcu(c, &h->list, list) { |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2241 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2243 | |
| 2244 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 2245 | continue; |
| 2246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | num++; |
| 2248 | |
| 2249 | if (c->sent < min) { |
| 2250 | min = c->sent; |
| 2251 | conn = c; |
| 2252 | } |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2253 | |
| 2254 | if (hci_conn_num(hdev, type) == num) |
| 2255 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | } |
| 2257 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2258 | rcu_read_unlock(); |
| 2259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2261 | int cnt, q; |
| 2262 | |
| 2263 | switch (conn->type) { |
| 2264 | case ACL_LINK: |
| 2265 | cnt = hdev->acl_cnt; |
| 2266 | break; |
| 2267 | case SCO_LINK: |
| 2268 | case ESCO_LINK: |
| 2269 | cnt = hdev->sco_cnt; |
| 2270 | break; |
| 2271 | case LE_LINK: |
| 2272 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2273 | break; |
| 2274 | default: |
| 2275 | cnt = 0; |
| 2276 | BT_ERR("Unknown link type"); |
| 2277 | } |
| 2278 | |
| 2279 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | *quote = q ? q : 1; |
| 2281 | } else |
| 2282 | *quote = 0; |
| 2283 | |
| 2284 | BT_DBG("conn %p quote %d", conn, *quote); |
| 2285 | return conn; |
| 2286 | } |
| 2287 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2288 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | { |
| 2290 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2291 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2293 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2295 | rcu_read_lock(); |
| 2296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | /* Kill stalled connections */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2298 | list_for_each_entry_rcu(c, &h->list, list) { |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2299 | if (c->type == type && c->sent) { |
| 2300 | BT_ERR("%s killing stalled connection %s", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2301 | hdev->name, batostr(&c->dst)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | hci_acl_disconn(c, 0x13); |
| 2303 | } |
| 2304 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2305 | |
| 2306 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | } |
| 2308 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2309 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
| 2310 | int *quote) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2311 | { |
| 2312 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2313 | struct hci_chan *chan = NULL; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2314 | unsigned int num = 0, min = ~0, cur_prio = 0; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2315 | struct hci_conn *conn; |
| 2316 | int cnt, q, conn_num = 0; |
| 2317 | |
| 2318 | BT_DBG("%s", hdev->name); |
| 2319 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2320 | rcu_read_lock(); |
| 2321 | |
| 2322 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2323 | struct hci_chan *tmp; |
| 2324 | |
| 2325 | if (conn->type != type) |
| 2326 | continue; |
| 2327 | |
| 2328 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2329 | continue; |
| 2330 | |
| 2331 | conn_num++; |
| 2332 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2333 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2334 | struct sk_buff *skb; |
| 2335 | |
| 2336 | if (skb_queue_empty(&tmp->data_q)) |
| 2337 | continue; |
| 2338 | |
| 2339 | skb = skb_peek(&tmp->data_q); |
| 2340 | if (skb->priority < cur_prio) |
| 2341 | continue; |
| 2342 | |
| 2343 | if (skb->priority > cur_prio) { |
| 2344 | num = 0; |
| 2345 | min = ~0; |
| 2346 | cur_prio = skb->priority; |
| 2347 | } |
| 2348 | |
| 2349 | num++; |
| 2350 | |
| 2351 | if (conn->sent < min) { |
| 2352 | min = conn->sent; |
| 2353 | chan = tmp; |
| 2354 | } |
| 2355 | } |
| 2356 | |
| 2357 | if (hci_conn_num(hdev, type) == conn_num) |
| 2358 | break; |
| 2359 | } |
| 2360 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2361 | rcu_read_unlock(); |
| 2362 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2363 | if (!chan) |
| 2364 | return NULL; |
| 2365 | |
| 2366 | switch (chan->conn->type) { |
| 2367 | case ACL_LINK: |
| 2368 | cnt = hdev->acl_cnt; |
| 2369 | break; |
| 2370 | case SCO_LINK: |
| 2371 | case ESCO_LINK: |
| 2372 | cnt = hdev->sco_cnt; |
| 2373 | break; |
| 2374 | case LE_LINK: |
| 2375 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2376 | break; |
| 2377 | default: |
| 2378 | cnt = 0; |
| 2379 | BT_ERR("Unknown link type"); |
| 2380 | } |
| 2381 | |
| 2382 | q = cnt / num; |
| 2383 | *quote = q ? q : 1; |
| 2384 | BT_DBG("chan %p quote %d", chan, *quote); |
| 2385 | return chan; |
| 2386 | } |
| 2387 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2388 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
| 2389 | { |
| 2390 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2391 | struct hci_conn *conn; |
| 2392 | int num = 0; |
| 2393 | |
| 2394 | BT_DBG("%s", hdev->name); |
| 2395 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2396 | rcu_read_lock(); |
| 2397 | |
| 2398 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2399 | struct hci_chan *chan; |
| 2400 | |
| 2401 | if (conn->type != type) |
| 2402 | continue; |
| 2403 | |
| 2404 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2405 | continue; |
| 2406 | |
| 2407 | num++; |
| 2408 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2409 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2410 | struct sk_buff *skb; |
| 2411 | |
| 2412 | if (chan->sent) { |
| 2413 | chan->sent = 0; |
| 2414 | continue; |
| 2415 | } |
| 2416 | |
| 2417 | if (skb_queue_empty(&chan->data_q)) |
| 2418 | continue; |
| 2419 | |
| 2420 | skb = skb_peek(&chan->data_q); |
| 2421 | if (skb->priority >= HCI_PRIO_MAX - 1) |
| 2422 | continue; |
| 2423 | |
| 2424 | skb->priority = HCI_PRIO_MAX - 1; |
| 2425 | |
| 2426 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2427 | skb->priority); |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2428 | } |
| 2429 | |
| 2430 | if (hci_conn_num(hdev, type) == num) |
| 2431 | break; |
| 2432 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2433 | |
| 2434 | rcu_read_unlock(); |
| 2435 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2436 | } |
| 2437 | |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2438 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
| 2439 | { |
| 2440 | /* Calculate count of blocks used by this packet */ |
| 2441 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); |
| 2442 | } |
| 2443 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2444 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2447 | /* ACL tx timeout must be longer than maximum |
| 2448 | * link supervision timeout (40.9 seconds) */ |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2449 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2450 | msecs_to_jiffies(HCI_ACL_TX_TIMEOUT))) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2451 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2452 | } |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2453 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2455 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2456 | { |
| 2457 | unsigned int cnt = hdev->acl_cnt; |
| 2458 | struct hci_chan *chan; |
| 2459 | struct sk_buff *skb; |
| 2460 | int quote; |
| 2461 | |
| 2462 | __check_timeout(hdev, cnt); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2463 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2464 | while (hdev->acl_cnt && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2465 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2466 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2467 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2468 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2469 | skb->len, skb->priority); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2470 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2471 | /* Stop if priority has changed */ |
| 2472 | if (skb->priority < priority) |
| 2473 | break; |
| 2474 | |
| 2475 | skb = skb_dequeue(&chan->data_q); |
| 2476 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2477 | hci_conn_enter_active_mode(chan->conn, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 2478 | bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | hci_send_frame(skb); |
| 2481 | hdev->acl_last_tx = jiffies; |
| 2482 | |
| 2483 | hdev->acl_cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2484 | chan->sent++; |
| 2485 | chan->conn->sent++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | } |
| 2487 | } |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2488 | |
| 2489 | if (cnt != hdev->acl_cnt) |
| 2490 | hci_prio_recalculate(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | } |
| 2492 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2493 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2494 | { |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2495 | unsigned int cnt = hdev->block_cnt; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2496 | struct hci_chan *chan; |
| 2497 | struct sk_buff *skb; |
| 2498 | int quote; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2499 | |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2500 | __check_timeout(hdev, cnt); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2501 | |
| 2502 | while (hdev->block_cnt > 0 && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2503 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2504 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2505 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { |
| 2506 | int blocks; |
| 2507 | |
| 2508 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2509 | skb->len, skb->priority); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2510 | |
| 2511 | /* Stop if priority has changed */ |
| 2512 | if (skb->priority < priority) |
| 2513 | break; |
| 2514 | |
| 2515 | skb = skb_dequeue(&chan->data_q); |
| 2516 | |
| 2517 | blocks = __get_blocks(hdev, skb); |
| 2518 | if (blocks > hdev->block_cnt) |
| 2519 | return; |
| 2520 | |
| 2521 | hci_conn_enter_active_mode(chan->conn, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2522 | bt_cb(skb)->force_active); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2523 | |
| 2524 | hci_send_frame(skb); |
| 2525 | hdev->acl_last_tx = jiffies; |
| 2526 | |
| 2527 | hdev->block_cnt -= blocks; |
| 2528 | quote -= blocks; |
| 2529 | |
| 2530 | chan->sent += blocks; |
| 2531 | chan->conn->sent += blocks; |
| 2532 | } |
| 2533 | } |
| 2534 | |
| 2535 | if (cnt != hdev->block_cnt) |
| 2536 | hci_prio_recalculate(hdev, ACL_LINK); |
| 2537 | } |
| 2538 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2539 | static void hci_sched_acl(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2540 | { |
| 2541 | BT_DBG("%s", hdev->name); |
| 2542 | |
| 2543 | if (!hci_conn_num(hdev, ACL_LINK)) |
| 2544 | return; |
| 2545 | |
| 2546 | switch (hdev->flow_ctl_mode) { |
| 2547 | case HCI_FLOW_CTL_MODE_PACKET_BASED: |
| 2548 | hci_sched_acl_pkt(hdev); |
| 2549 | break; |
| 2550 | |
| 2551 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: |
| 2552 | hci_sched_acl_blk(hdev); |
| 2553 | break; |
| 2554 | } |
| 2555 | } |
| 2556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | /* Schedule SCO */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2558 | static void hci_sched_sco(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | { |
| 2560 | struct hci_conn *conn; |
| 2561 | struct sk_buff *skb; |
| 2562 | int quote; |
| 2563 | |
| 2564 | BT_DBG("%s", hdev->name); |
| 2565 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2566 | if (!hci_conn_num(hdev, SCO_LINK)) |
| 2567 | return; |
| 2568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2569 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 2570 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2571 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2572 | hci_send_frame(skb); |
| 2573 | |
| 2574 | conn->sent++; |
| 2575 | if (conn->sent == ~0) |
| 2576 | conn->sent = 0; |
| 2577 | } |
| 2578 | } |
| 2579 | } |
| 2580 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2581 | static void hci_sched_esco(struct hci_dev *hdev) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2582 | { |
| 2583 | struct hci_conn *conn; |
| 2584 | struct sk_buff *skb; |
| 2585 | int quote; |
| 2586 | |
| 2587 | BT_DBG("%s", hdev->name); |
| 2588 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2589 | if (!hci_conn_num(hdev, ESCO_LINK)) |
| 2590 | return; |
| 2591 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 2592 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
| 2593 | "e))) { |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2594 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2595 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2596 | hci_send_frame(skb); |
| 2597 | |
| 2598 | conn->sent++; |
| 2599 | if (conn->sent == ~0) |
| 2600 | conn->sent = 0; |
| 2601 | } |
| 2602 | } |
| 2603 | } |
| 2604 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2605 | static void hci_sched_le(struct hci_dev *hdev) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2606 | { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2607 | struct hci_chan *chan; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2608 | struct sk_buff *skb; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2609 | int quote, cnt, tmp; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2610 | |
| 2611 | BT_DBG("%s", hdev->name); |
| 2612 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2613 | if (!hci_conn_num(hdev, LE_LINK)) |
| 2614 | return; |
| 2615 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2616 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2617 | /* LE tx timeout must be longer than maximum |
| 2618 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2619 | if (!hdev->le_cnt && hdev->le_pkts && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2620 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2621 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2622 | } |
| 2623 | |
| 2624 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2625 | tmp = cnt; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2626 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2627 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2628 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2629 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2630 | skb->len, skb->priority); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2631 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2632 | /* Stop if priority has changed */ |
| 2633 | if (skb->priority < priority) |
| 2634 | break; |
| 2635 | |
| 2636 | skb = skb_dequeue(&chan->data_q); |
| 2637 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2638 | hci_send_frame(skb); |
| 2639 | hdev->le_last_tx = jiffies; |
| 2640 | |
| 2641 | cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2642 | chan->sent++; |
| 2643 | chan->conn->sent++; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2644 | } |
| 2645 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2646 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2647 | if (hdev->le_pkts) |
| 2648 | hdev->le_cnt = cnt; |
| 2649 | else |
| 2650 | hdev->acl_cnt = cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2651 | |
| 2652 | if (cnt != tmp) |
| 2653 | hci_prio_recalculate(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2654 | } |
| 2655 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2656 | static void hci_tx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2657 | { |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2658 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | struct sk_buff *skb; |
| 2660 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2661 | 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] | 2662 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | |
| 2664 | /* Schedule queues and send stuff to HCI driver */ |
| 2665 | |
| 2666 | hci_sched_acl(hdev); |
| 2667 | |
| 2668 | hci_sched_sco(hdev); |
| 2669 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2670 | hci_sched_esco(hdev); |
| 2671 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2672 | hci_sched_le(hdev); |
| 2673 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2674 | /* Send next queued raw (unknown type) packet */ |
| 2675 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 2676 | hci_send_frame(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2677 | } |
| 2678 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2679 | /* ----- HCI RX task (incoming data processing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | |
| 2681 | /* ACL data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2682 | 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] | 2683 | { |
| 2684 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 2685 | struct hci_conn *conn; |
| 2686 | __u16 handle, flags; |
| 2687 | |
| 2688 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 2689 | |
| 2690 | handle = __le16_to_cpu(hdr->handle); |
| 2691 | flags = hci_flags(handle); |
| 2692 | handle = hci_handle(handle); |
| 2693 | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2694 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, |
| 2695 | handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2696 | |
| 2697 | hdev->stat.acl_rx++; |
| 2698 | |
| 2699 | hci_dev_lock(hdev); |
| 2700 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2701 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2702 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | if (conn) { |
Mat Martineau | 65983fc | 2011-12-13 15:06:02 -0800 | [diff] [blame] | 2704 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2705 | |
Johan Hedberg | 671267b | 2012-05-12 16:11:50 -0300 | [diff] [blame] | 2706 | hci_dev_lock(hdev); |
| 2707 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && |
| 2708 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) |
| 2709 | mgmt_device_connected(hdev, &conn->dst, conn->type, |
| 2710 | conn->dst_type, 0, NULL, 0, |
| 2711 | conn->dev_class); |
| 2712 | hci_dev_unlock(hdev); |
| 2713 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2715 | l2cap_recv_acldata(conn, skb, flags); |
| 2716 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2718 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2719 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | } |
| 2721 | |
| 2722 | kfree_skb(skb); |
| 2723 | } |
| 2724 | |
| 2725 | /* SCO data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2726 | 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] | 2727 | { |
| 2728 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 2729 | struct hci_conn *conn; |
| 2730 | __u16 handle; |
| 2731 | |
| 2732 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 2733 | |
| 2734 | handle = __le16_to_cpu(hdr->handle); |
| 2735 | |
| 2736 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); |
| 2737 | |
| 2738 | hdev->stat.sco_rx++; |
| 2739 | |
| 2740 | hci_dev_lock(hdev); |
| 2741 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2742 | hci_dev_unlock(hdev); |
| 2743 | |
| 2744 | if (conn) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2746 | sco_recv_scodata(conn, skb); |
| 2747 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2749 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2750 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | } |
| 2752 | |
| 2753 | kfree_skb(skb); |
| 2754 | } |
| 2755 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2756 | static void hci_rx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | { |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2758 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | struct sk_buff *skb; |
| 2760 | |
| 2761 | BT_DBG("%s", hdev->name); |
| 2762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2764 | /* Send copy to monitor */ |
| 2765 | hci_send_to_monitor(hdev, skb); |
| 2766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | if (atomic_read(&hdev->promisc)) { |
| 2768 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2769 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2770 | } |
| 2771 | |
| 2772 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 2773 | kfree_skb(skb); |
| 2774 | continue; |
| 2775 | } |
| 2776 | |
| 2777 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 2778 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2779 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | case HCI_ACLDATA_PKT: |
| 2781 | case HCI_SCODATA_PKT: |
| 2782 | kfree_skb(skb); |
| 2783 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 2784 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2785 | } |
| 2786 | |
| 2787 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2788 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | case HCI_EVENT_PKT: |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2790 | BT_DBG("%s Event packet", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2791 | hci_event_packet(hdev, skb); |
| 2792 | break; |
| 2793 | |
| 2794 | case HCI_ACLDATA_PKT: |
| 2795 | BT_DBG("%s ACL data packet", hdev->name); |
| 2796 | hci_acldata_packet(hdev, skb); |
| 2797 | break; |
| 2798 | |
| 2799 | case HCI_SCODATA_PKT: |
| 2800 | BT_DBG("%s SCO data packet", hdev->name); |
| 2801 | hci_scodata_packet(hdev, skb); |
| 2802 | break; |
| 2803 | |
| 2804 | default: |
| 2805 | kfree_skb(skb); |
| 2806 | break; |
| 2807 | } |
| 2808 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2809 | } |
| 2810 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2811 | static void hci_cmd_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | { |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2813 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | struct sk_buff *skb; |
| 2815 | |
| 2816 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); |
| 2817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 2819 | if (atomic_read(&hdev->cmd_cnt)) { |
| 2820 | skb = skb_dequeue(&hdev->cmd_q); |
| 2821 | if (!skb) |
| 2822 | return; |
| 2823 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 2824 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2826 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 2827 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2828 | atomic_dec(&hdev->cmd_cnt); |
| 2829 | hci_send_frame(skb); |
Szymon Janc | 7bdb8a5 | 2011-07-26 22:46:54 +0200 | [diff] [blame] | 2830 | if (test_bit(HCI_RESET, &hdev->flags)) |
| 2831 | del_timer(&hdev->cmd_timer); |
| 2832 | else |
| 2833 | mod_timer(&hdev->cmd_timer, |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2834 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | } else { |
| 2836 | skb_queue_head(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2837 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | } |
| 2839 | } |
| 2840 | } |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2841 | |
| 2842 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) |
| 2843 | { |
| 2844 | /* General inquiry access code (GIAC) */ |
| 2845 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; |
| 2846 | struct hci_cp_inquiry cp; |
| 2847 | |
| 2848 | BT_DBG("%s", hdev->name); |
| 2849 | |
| 2850 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 2851 | return -EINPROGRESS; |
| 2852 | |
Johan Hedberg | 4663262 | 2012-01-02 16:06:08 +0200 | [diff] [blame] | 2853 | inquiry_cache_flush(hdev); |
| 2854 | |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2855 | memset(&cp, 0, sizeof(cp)); |
| 2856 | memcpy(&cp.lap, lap, sizeof(cp.lap)); |
| 2857 | cp.length = length; |
| 2858 | |
| 2859 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
| 2860 | } |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2861 | |
| 2862 | int hci_cancel_inquiry(struct hci_dev *hdev) |
| 2863 | { |
| 2864 | BT_DBG("%s", hdev->name); |
| 2865 | |
| 2866 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) |
Andre Guedes | 7537e5c | 2012-03-20 00:13:38 -0300 | [diff] [blame] | 2867 | return -EALREADY; |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2868 | |
| 2869 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); |
| 2870 | } |
Andre Guedes | 31f7956 | 2012-04-24 21:02:53 -0300 | [diff] [blame] | 2871 | |
| 2872 | u8 bdaddr_to_le(u8 bdaddr_type) |
| 2873 | { |
| 2874 | switch (bdaddr_type) { |
| 2875 | case BDADDR_LE_PUBLIC: |
| 2876 | return ADDR_LE_DEV_PUBLIC; |
| 2877 | |
| 2878 | default: |
| 2879 | /* Fallback to LE Random address type */ |
| 2880 | return ADDR_LE_DEV_RANDOM; |
| 2881 | } |
| 2882 | } |