YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
Gustavo F. Padovan | 590051d | 2011-12-18 13:39:33 -0200 | [diff] [blame] | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | |
| 6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License version 2 as |
| 10 | published by the Free Software Foundation; |
| 11 | |
| 12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 20 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | SOFTWARE IS DISCLAIMED. |
| 24 | */ |
| 25 | |
| 26 | /* Bluetooth HCI core. */ |
| 27 | |
Gustavo Padovan | 8c520a5 | 2012-05-23 04:04:22 -0300 | [diff] [blame] | 28 | #include <linux/export.h> |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 29 | #include <linux/idr.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 31 | #include <linux/rfkill.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #include <net/bluetooth/bluetooth.h> |
| 34 | #include <net/bluetooth/hci_core.h> |
| 35 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 36 | static void hci_rx_work(struct work_struct *work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 37 | static void hci_cmd_work(struct work_struct *work); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 38 | static void hci_tx_work(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | /* HCI device list */ |
| 41 | LIST_HEAD(hci_dev_list); |
| 42 | DEFINE_RWLOCK(hci_dev_list_lock); |
| 43 | |
| 44 | /* HCI callback list */ |
| 45 | LIST_HEAD(hci_cb_list); |
| 46 | DEFINE_RWLOCK(hci_cb_list_lock); |
| 47 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 48 | /* HCI ID Numbering */ |
| 49 | static DEFINE_IDA(hci_index_ida); |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | /* ---- HCI notifications ---- */ |
| 52 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 53 | static void hci_notify(struct hci_dev *hdev, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | { |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 55 | hci_sock_dev_event(hdev, event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | /* ---- HCI requests ---- */ |
| 59 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 60 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 62 | BT_DBG("%s command 0x%4.4x result 0x%2.2x", hdev->name, cmd, result); |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 63 | |
Johan Hedberg | a5040efa | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 64 | /* If this is the init phase check if the completed command matches |
| 65 | * the last init command, and if not just return. |
| 66 | */ |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 67 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { |
| 68 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; |
Andrei Emeltchenko | 1036b890 | 2012-03-12 15:59:33 +0200 | [diff] [blame] | 69 | u16 opcode = __le16_to_cpu(sent->opcode); |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 70 | struct sk_buff *skb; |
| 71 | |
| 72 | /* Some CSR based controllers generate a spontaneous |
| 73 | * reset complete event during init and any pending |
| 74 | * command will never be completed. In such a case we |
| 75 | * need to resend whatever was the last sent |
| 76 | * command. |
| 77 | */ |
| 78 | |
Andrei Emeltchenko | 1036b890 | 2012-03-12 15:59:33 +0200 | [diff] [blame] | 79 | if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 80 | return; |
| 81 | |
| 82 | skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); |
| 83 | if (skb) { |
| 84 | skb_queue_head(&hdev->cmd_q, skb); |
| 85 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 86 | } |
| 87 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 88 | return; |
Johan Hedberg | 75fb0e3 | 2012-03-01 21:35:55 +0200 | [diff] [blame] | 89 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | if (hdev->req_status == HCI_REQ_PEND) { |
| 92 | hdev->req_result = result; |
| 93 | hdev->req_status = HCI_REQ_DONE; |
| 94 | wake_up_interruptible(&hdev->req_wait_q); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 99 | { |
| 100 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 101 | |
| 102 | if (hdev->req_status == HCI_REQ_PEND) { |
| 103 | hdev->req_result = err; |
| 104 | hdev->req_status = HCI_REQ_CANCELED; |
| 105 | wake_up_interruptible(&hdev->req_wait_q); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | /* Execute request and wait for completion. */ |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 110 | static int __hci_request(struct hci_dev *hdev, |
| 111 | void (*req)(struct hci_dev *hdev, unsigned long opt), |
| 112 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
| 114 | DECLARE_WAITQUEUE(wait, current); |
| 115 | int err = 0; |
| 116 | |
| 117 | BT_DBG("%s start", hdev->name); |
| 118 | |
| 119 | hdev->req_status = HCI_REQ_PEND; |
| 120 | |
| 121 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 122 | set_current_state(TASK_INTERRUPTIBLE); |
| 123 | |
| 124 | req(hdev, opt); |
| 125 | schedule_timeout(timeout); |
| 126 | |
| 127 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 128 | |
| 129 | if (signal_pending(current)) |
| 130 | return -EINTR; |
| 131 | |
| 132 | switch (hdev->req_status) { |
| 133 | case HCI_REQ_DONE: |
Joe Perches | e175072 | 2011-06-29 18:18:29 -0700 | [diff] [blame] | 134 | err = -bt_to_errno(hdev->req_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | break; |
| 136 | |
| 137 | case HCI_REQ_CANCELED: |
| 138 | err = -hdev->req_result; |
| 139 | break; |
| 140 | |
| 141 | default: |
| 142 | err = -ETIMEDOUT; |
| 143 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 144 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
Johan Hedberg | a5040efa | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 146 | hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
| 148 | BT_DBG("%s end: err %d", hdev->name, err); |
| 149 | |
| 150 | return err; |
| 151 | } |
| 152 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 153 | static int hci_request(struct hci_dev *hdev, |
| 154 | void (*req)(struct hci_dev *hdev, unsigned long opt), |
| 155 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | { |
| 157 | int ret; |
| 158 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 159 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 160 | return -ENETDOWN; |
| 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /* Serialize all requests */ |
| 163 | hci_req_lock(hdev); |
| 164 | ret = __hci_request(hdev, req, opt, timeout); |
| 165 | hci_req_unlock(hdev); |
| 166 | |
| 167 | return ret; |
| 168 | } |
| 169 | |
| 170 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) |
| 171 | { |
| 172 | BT_DBG("%s %ld", hdev->name, opt); |
| 173 | |
| 174 | /* Reset device */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 175 | set_bit(HCI_RESET, &hdev->flags); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 176 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | } |
| 178 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 179 | static void bredr_init(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 181 | struct hci_cp_delete_stored_link_key cp; |
Marcel Holtmann | 1ebb925 | 2005-11-08 09:57:21 -0800 | [diff] [blame] | 182 | __le16 param; |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 183 | __u8 flt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 185 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
| 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | /* Mandatory initialization */ |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* Read Local Supported Features */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 190 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 192 | /* Read Local Version */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 193 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 196 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | /* Read BD Address */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 199 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
| 200 | |
| 201 | /* Read Class of Device */ |
| 202 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
| 203 | |
| 204 | /* Read Local Name */ |
| 205 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
| 207 | /* Read Voice Setting */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 208 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | /* Optional initialization */ |
| 211 | |
| 212 | /* Clear Event Filters */ |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 213 | flt_type = HCI_FLT_CLEAR_ALL; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 214 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | /* Connection accept timeout ~20 secs */ |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 217 | param = __constant_cpu_to_le16(0x7d00); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 218 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 219 | |
| 220 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 221 | cp.delete_all = 1; |
| 222 | 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] | 223 | } |
| 224 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 225 | static void amp_init(struct hci_dev *hdev) |
| 226 | { |
Andrei Emeltchenko | 2455a3e | 2011-12-19 16:31:28 +0200 | [diff] [blame] | 227 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
| 228 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 229 | /* Read Local Version */ |
| 230 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Andrei Emeltchenko | 6bcbc48 | 2012-03-28 16:31:24 +0300 | [diff] [blame] | 231 | |
| 232 | /* Read Local AMP Info */ |
| 233 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) |
| 237 | { |
| 238 | struct sk_buff *skb; |
| 239 | |
| 240 | BT_DBG("%s %ld", hdev->name, opt); |
| 241 | |
| 242 | /* Driver initialization */ |
| 243 | |
| 244 | /* Special commands */ |
| 245 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
| 246 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
| 247 | skb->dev = (void *) hdev; |
| 248 | |
| 249 | skb_queue_tail(&hdev->cmd_q, skb); |
| 250 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 251 | } |
| 252 | skb_queue_purge(&hdev->driver_init); |
| 253 | |
Andrei Emeltchenko | 1177871 | 2012-06-11 11:13:10 +0300 | [diff] [blame] | 254 | /* Reset */ |
| 255 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) |
| 256 | hci_reset_req(hdev, 0); |
| 257 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 258 | switch (hdev->dev_type) { |
| 259 | case HCI_BREDR: |
| 260 | bredr_init(hdev); |
| 261 | break; |
| 262 | |
| 263 | case HCI_AMP: |
| 264 | amp_init(hdev); |
| 265 | break; |
| 266 | |
| 267 | default: |
| 268 | BT_ERR("Unknown device type %d", hdev->dev_type); |
| 269 | break; |
| 270 | } |
| 271 | |
| 272 | } |
| 273 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 274 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
| 275 | { |
| 276 | BT_DBG("%s", hdev->name); |
| 277 | |
| 278 | /* Read LE buffer size */ |
| 279 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
| 280 | } |
| 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 283 | { |
| 284 | __u8 scan = opt; |
| 285 | |
| 286 | BT_DBG("%s %x", hdev->name, scan); |
| 287 | |
| 288 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 289 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 293 | { |
| 294 | __u8 auth = opt; |
| 295 | |
| 296 | BT_DBG("%s %x", hdev->name, auth); |
| 297 | |
| 298 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 299 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 303 | { |
| 304 | __u8 encrypt = opt; |
| 305 | |
| 306 | BT_DBG("%s %x", hdev->name, encrypt); |
| 307 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 308 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 309 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | } |
| 311 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 312 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 313 | { |
| 314 | __le16 policy = cpu_to_le16(opt); |
| 315 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 316 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 317 | |
| 318 | /* Default link policy */ |
| 319 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 320 | } |
| 321 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 322 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | * Device is held on return. */ |
| 324 | struct hci_dev *hci_dev_get(int index) |
| 325 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 326 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
| 328 | BT_DBG("%d", index); |
| 329 | |
| 330 | if (index < 0) |
| 331 | return NULL; |
| 332 | |
| 333 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 334 | list_for_each_entry(d, &hci_dev_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | if (d->id == index) { |
| 336 | hdev = hci_dev_hold(d); |
| 337 | break; |
| 338 | } |
| 339 | } |
| 340 | read_unlock(&hci_dev_list_lock); |
| 341 | return hdev; |
| 342 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | /* ---- Inquiry support ---- */ |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 345 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 346 | bool hci_discovery_active(struct hci_dev *hdev) |
| 347 | { |
| 348 | struct discovery_state *discov = &hdev->discovery; |
| 349 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 350 | switch (discov->state) { |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 351 | case DISCOVERY_FINDING: |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 352 | case DISCOVERY_RESOLVING: |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 353 | return true; |
| 354 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 355 | default: |
| 356 | return false; |
| 357 | } |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 358 | } |
| 359 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 360 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
| 361 | { |
| 362 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
| 363 | |
| 364 | if (hdev->discovery.state == state) |
| 365 | return; |
| 366 | |
| 367 | switch (state) { |
| 368 | case DISCOVERY_STOPPED: |
Andre Guedes | 7b99b65 | 2012-02-13 15:41:02 -0300 | [diff] [blame] | 369 | if (hdev->discovery.state != DISCOVERY_STARTING) |
| 370 | mgmt_discovering(hdev, 0); |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 371 | break; |
| 372 | case DISCOVERY_STARTING: |
| 373 | break; |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 374 | case DISCOVERY_FINDING: |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 375 | mgmt_discovering(hdev, 1); |
| 376 | break; |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 377 | case DISCOVERY_RESOLVING: |
| 378 | break; |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 379 | case DISCOVERY_STOPPING: |
| 380 | break; |
| 381 | } |
| 382 | |
| 383 | hdev->discovery.state = state; |
| 384 | } |
| 385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 387 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 388 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 389 | struct inquiry_entry *p, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 391 | list_for_each_entry_safe(p, n, &cache->all, all) { |
| 392 | list_del(&p->all); |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 393 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 395 | |
| 396 | INIT_LIST_HEAD(&cache->unknown); |
| 397 | INIT_LIST_HEAD(&cache->resolve); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | } |
| 399 | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 400 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
| 401 | bdaddr_t *bdaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 403 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | struct inquiry_entry *e; |
| 405 | |
| 406 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 407 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 408 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 410 | return e; |
| 411 | } |
| 412 | |
| 413 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 416 | 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] | 417 | bdaddr_t *bdaddr) |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 418 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 419 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 420 | struct inquiry_entry *e; |
| 421 | |
| 422 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 423 | |
| 424 | list_for_each_entry(e, &cache->unknown, list) { |
| 425 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 426 | return e; |
| 427 | } |
| 428 | |
| 429 | return NULL; |
| 430 | } |
| 431 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 432 | 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] | 433 | bdaddr_t *bdaddr, |
| 434 | int state) |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 435 | { |
| 436 | struct discovery_state *cache = &hdev->discovery; |
| 437 | struct inquiry_entry *e; |
| 438 | |
| 439 | BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); |
| 440 | |
| 441 | list_for_each_entry(e, &cache->resolve, list) { |
| 442 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) |
| 443 | return e; |
| 444 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 445 | return e; |
| 446 | } |
| 447 | |
| 448 | return NULL; |
| 449 | } |
| 450 | |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 451 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 452 | struct inquiry_entry *ie) |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 453 | { |
| 454 | struct discovery_state *cache = &hdev->discovery; |
| 455 | struct list_head *pos = &cache->resolve; |
| 456 | struct inquiry_entry *p; |
| 457 | |
| 458 | list_del(&ie->list); |
| 459 | |
| 460 | list_for_each_entry(p, &cache->resolve, list) { |
| 461 | if (p->name_state != NAME_PENDING && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 462 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 463 | break; |
| 464 | pos = &p->list; |
| 465 | } |
| 466 | |
| 467 | list_add(&ie->list, pos); |
| 468 | } |
| 469 | |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 470 | 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] | 471 | bool name_known, bool *ssp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 473 | struct discovery_state *cache = &hdev->discovery; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 474 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); |
| 477 | |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 478 | if (ssp) |
| 479 | *ssp = data->ssp_mode; |
| 480 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 481 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 482 | if (ie) { |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 483 | if (ie->data.ssp_mode && ssp) |
| 484 | *ssp = true; |
| 485 | |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 486 | if (ie->name_state == NAME_NEEDED && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 487 | data->rssi != ie->data.rssi) { |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 488 | ie->data.rssi = data->rssi; |
| 489 | hci_inquiry_cache_update_resolve(hdev, ie); |
| 490 | } |
| 491 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 492 | goto update; |
Johan Hedberg | a3d4e20a | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 493 | } |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 494 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 495 | /* Entry not in the cache. Add new one. */ |
| 496 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 497 | if (!ie) |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 498 | return false; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 499 | |
| 500 | list_add(&ie->all, &cache->all); |
| 501 | |
| 502 | if (name_known) { |
| 503 | ie->name_state = NAME_KNOWN; |
| 504 | } else { |
| 505 | ie->name_state = NAME_NOT_KNOWN; |
| 506 | list_add(&ie->list, &cache->unknown); |
| 507 | } |
| 508 | |
| 509 | update: |
| 510 | if (name_known && ie->name_state != NAME_KNOWN && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 511 | ie->name_state != NAME_PENDING) { |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 512 | ie->name_state = NAME_KNOWN; |
| 513 | list_del(&ie->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } |
| 515 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 516 | memcpy(&ie->data, data, sizeof(*data)); |
| 517 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | cache->timestamp = jiffies; |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 519 | |
| 520 | if (ie->name_state == NAME_NOT_KNOWN) |
| 521 | return false; |
| 522 | |
| 523 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 527 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 528 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 530 | struct inquiry_entry *e; |
| 531 | int copied = 0; |
| 532 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 533 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | struct inquiry_data *data = &e->data; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 535 | |
| 536 | if (copied >= num) |
| 537 | break; |
| 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | bacpy(&info->bdaddr, &data->bdaddr); |
| 540 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 541 | info->pscan_period_mode = data->pscan_period_mode; |
| 542 | info->pscan_mode = data->pscan_mode; |
| 543 | memcpy(info->dev_class, data->dev_class, 3); |
| 544 | info->clock_offset = data->clock_offset; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | info++; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 547 | copied++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | BT_DBG("cache %p, copied %d", cache, copied); |
| 551 | return copied; |
| 552 | } |
| 553 | |
| 554 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 555 | { |
| 556 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 557 | struct hci_cp_inquiry cp; |
| 558 | |
| 559 | BT_DBG("%s", hdev->name); |
| 560 | |
| 561 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 562 | return; |
| 563 | |
| 564 | /* Start Inquiry */ |
| 565 | memcpy(&cp.lap, &ir->lap, 3); |
| 566 | cp.length = ir->length; |
| 567 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 568 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | int hci_inquiry(void __user *arg) |
| 572 | { |
| 573 | __u8 __user *ptr = arg; |
| 574 | struct hci_inquiry_req ir; |
| 575 | struct hci_dev *hdev; |
| 576 | int err = 0, do_inquiry = 0, max_rsp; |
| 577 | long timeo; |
| 578 | __u8 *buf; |
| 579 | |
| 580 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 581 | return -EFAULT; |
| 582 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 583 | hdev = hci_dev_get(ir.dev_id); |
| 584 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | return -ENODEV; |
| 586 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 587 | hci_dev_lock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 588 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 589 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | inquiry_cache_flush(hdev); |
| 591 | do_inquiry = 1; |
| 592 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 593 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 595 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 596 | |
| 597 | if (do_inquiry) { |
| 598 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 599 | if (err < 0) |
| 600 | goto done; |
| 601 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 603 | /* for unlimited number of responses we will use buffer with |
| 604 | * 255 entries |
| 605 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 607 | |
| 608 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 609 | * copy it to the user space. |
| 610 | */ |
Szymon Janc | 01df8c31 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 611 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 612 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | err = -ENOMEM; |
| 614 | goto done; |
| 615 | } |
| 616 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 617 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 619 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
| 621 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 622 | |
| 623 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 624 | ptr += sizeof(ir); |
| 625 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 626 | ir.num_rsp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 628 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | err = -EFAULT; |
| 630 | |
| 631 | kfree(buf); |
| 632 | |
| 633 | done: |
| 634 | hci_dev_put(hdev); |
| 635 | return err; |
| 636 | } |
| 637 | |
| 638 | /* ---- HCI ioctl helpers ---- */ |
| 639 | |
| 640 | int hci_dev_open(__u16 dev) |
| 641 | { |
| 642 | struct hci_dev *hdev; |
| 643 | int ret = 0; |
| 644 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 645 | hdev = hci_dev_get(dev); |
| 646 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | return -ENODEV; |
| 648 | |
| 649 | BT_DBG("%s %p", hdev->name, hdev); |
| 650 | |
| 651 | hci_req_lock(hdev); |
| 652 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 653 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
| 654 | ret = -ENODEV; |
| 655 | goto done; |
| 656 | } |
| 657 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 658 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 659 | ret = -ERFKILL; |
| 660 | goto done; |
| 661 | } |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 664 | ret = -EALREADY; |
| 665 | goto done; |
| 666 | } |
| 667 | |
| 668 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 669 | set_bit(HCI_RAW, &hdev->flags); |
| 670 | |
Andrei Emeltchenko | 07e3b94 | 2011-11-11 17:02:15 +0200 | [diff] [blame] | 671 | /* Treat all non BR/EDR controllers as raw devices if |
| 672 | enable_hs is not set */ |
| 673 | if (hdev->dev_type != HCI_BREDR && !enable_hs) |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 674 | set_bit(HCI_RAW, &hdev->flags); |
| 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | if (hdev->open(hdev)) { |
| 677 | ret = -EIO; |
| 678 | goto done; |
| 679 | } |
| 680 | |
| 681 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 682 | atomic_set(&hdev->cmd_cnt, 1); |
| 683 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | a5040efa | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 684 | hdev->init_last_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 686 | ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
Andre Guedes | eead27d | 2011-06-30 19:20:55 -0300 | [diff] [blame] | 688 | if (lmp_host_le_capable(hdev)) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 689 | ret = __hci_request(hdev, hci_le_init_req, 0, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 690 | HCI_INIT_TIMEOUT); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | clear_bit(HCI_INIT, &hdev->flags); |
| 693 | } |
| 694 | |
| 695 | if (!ret) { |
| 696 | hci_dev_hold(hdev); |
| 697 | set_bit(HCI_UP, &hdev->flags); |
| 698 | hci_notify(hdev, HCI_DEV_UP); |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 699 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 700 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 701 | mgmt_powered(hdev, 1); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 702 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 703 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 704 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | /* Init failed, cleanup */ |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 706 | flush_work(&hdev->tx_work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 707 | flush_work(&hdev->cmd_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 708 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | skb_queue_purge(&hdev->cmd_q); |
| 711 | skb_queue_purge(&hdev->rx_q); |
| 712 | |
| 713 | if (hdev->flush) |
| 714 | hdev->flush(hdev); |
| 715 | |
| 716 | if (hdev->sent_cmd) { |
| 717 | kfree_skb(hdev->sent_cmd); |
| 718 | hdev->sent_cmd = NULL; |
| 719 | } |
| 720 | |
| 721 | hdev->close(hdev); |
| 722 | hdev->flags = 0; |
| 723 | } |
| 724 | |
| 725 | done: |
| 726 | hci_req_unlock(hdev); |
| 727 | hci_dev_put(hdev); |
| 728 | return ret; |
| 729 | } |
| 730 | |
| 731 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 732 | { |
| 733 | BT_DBG("%s %p", hdev->name, hdev); |
| 734 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 735 | cancel_work_sync(&hdev->le_scan); |
| 736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | hci_req_cancel(hdev, ENODEV); |
| 738 | hci_req_lock(hdev); |
| 739 | |
| 740 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 741 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | hci_req_unlock(hdev); |
| 743 | return 0; |
| 744 | } |
| 745 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 746 | /* Flush RX and TX works */ |
| 747 | flush_work(&hdev->tx_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 748 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 750 | if (hdev->discov_timeout > 0) { |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 751 | cancel_delayed_work(&hdev->discov_off); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 752 | hdev->discov_timeout = 0; |
Johan Hedberg | 5e5282b | 2012-02-21 16:01:30 +0200 | [diff] [blame] | 753 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 754 | } |
| 755 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 756 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
Johan Hedberg | 7d78525 | 2011-12-15 00:47:39 +0200 | [diff] [blame] | 757 | cancel_delayed_work(&hdev->service_cache); |
| 758 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 759 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
| 760 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 761 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | inquiry_cache_flush(hdev); |
| 763 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 764 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | |
| 766 | hci_notify(hdev, HCI_DEV_DOWN); |
| 767 | |
| 768 | if (hdev->flush) |
| 769 | hdev->flush(hdev); |
| 770 | |
| 771 | /* Reset device */ |
| 772 | skb_queue_purge(&hdev->cmd_q); |
| 773 | atomic_set(&hdev->cmd_cnt, 1); |
Johan Hedberg | 8af5946 | 2012-02-03 21:29:40 +0200 | [diff] [blame] | 774 | if (!test_bit(HCI_RAW, &hdev->flags) && |
Szymon Janc | a6c511c | 2012-05-23 12:35:46 +0200 | [diff] [blame] | 775 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | set_bit(HCI_INIT, &hdev->flags); |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 777 | __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | clear_bit(HCI_INIT, &hdev->flags); |
| 779 | } |
| 780 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 781 | /* flush cmd work */ |
| 782 | flush_work(&hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
| 784 | /* Drop queues */ |
| 785 | skb_queue_purge(&hdev->rx_q); |
| 786 | skb_queue_purge(&hdev->cmd_q); |
| 787 | skb_queue_purge(&hdev->raw_q); |
| 788 | |
| 789 | /* Drop last sent command */ |
| 790 | if (hdev->sent_cmd) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 791 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | kfree_skb(hdev->sent_cmd); |
| 793 | hdev->sent_cmd = NULL; |
| 794 | } |
| 795 | |
| 796 | /* After this point our queues are empty |
| 797 | * and no tasks are scheduled. */ |
| 798 | hdev->close(hdev); |
| 799 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 800 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
| 801 | hci_dev_lock(hdev); |
| 802 | mgmt_powered(hdev, 0); |
| 803 | hci_dev_unlock(hdev); |
| 804 | } |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 805 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | /* Clear flags */ |
| 807 | hdev->flags = 0; |
| 808 | |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 809 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
Johan Hedberg | 09b3c3f | 2012-02-22 22:01:41 +0200 | [diff] [blame] | 810 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | hci_req_unlock(hdev); |
| 813 | |
| 814 | hci_dev_put(hdev); |
| 815 | return 0; |
| 816 | } |
| 817 | |
| 818 | int hci_dev_close(__u16 dev) |
| 819 | { |
| 820 | struct hci_dev *hdev; |
| 821 | int err; |
| 822 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 823 | hdev = hci_dev_get(dev); |
| 824 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | return -ENODEV; |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 826 | |
| 827 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
| 828 | cancel_delayed_work(&hdev->power_off); |
| 829 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | err = hci_dev_do_close(hdev); |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 831 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | hci_dev_put(hdev); |
| 833 | return err; |
| 834 | } |
| 835 | |
| 836 | int hci_dev_reset(__u16 dev) |
| 837 | { |
| 838 | struct hci_dev *hdev; |
| 839 | int ret = 0; |
| 840 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 841 | hdev = hci_dev_get(dev); |
| 842 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | return -ENODEV; |
| 844 | |
| 845 | hci_req_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
| 847 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 848 | goto done; |
| 849 | |
| 850 | /* Drop queues */ |
| 851 | skb_queue_purge(&hdev->rx_q); |
| 852 | skb_queue_purge(&hdev->cmd_q); |
| 853 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 854 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | inquiry_cache_flush(hdev); |
| 856 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 857 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
| 859 | if (hdev->flush) |
| 860 | hdev->flush(hdev); |
| 861 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 862 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 863 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | |
| 865 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 866 | ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
| 868 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | hci_req_unlock(hdev); |
| 870 | hci_dev_put(hdev); |
| 871 | return ret; |
| 872 | } |
| 873 | |
| 874 | int hci_dev_reset_stat(__u16 dev) |
| 875 | { |
| 876 | struct hci_dev *hdev; |
| 877 | int ret = 0; |
| 878 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 879 | hdev = hci_dev_get(dev); |
| 880 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | return -ENODEV; |
| 882 | |
| 883 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 884 | |
| 885 | hci_dev_put(hdev); |
| 886 | |
| 887 | return ret; |
| 888 | } |
| 889 | |
| 890 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 891 | { |
| 892 | struct hci_dev *hdev; |
| 893 | struct hci_dev_req dr; |
| 894 | int err = 0; |
| 895 | |
| 896 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 897 | return -EFAULT; |
| 898 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 899 | hdev = hci_dev_get(dr.dev_id); |
| 900 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | return -ENODEV; |
| 902 | |
| 903 | switch (cmd) { |
| 904 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 905 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 906 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | break; |
| 908 | |
| 909 | case HCISETENCRYPT: |
| 910 | if (!lmp_encrypt_capable(hdev)) { |
| 911 | err = -EOPNOTSUPP; |
| 912 | break; |
| 913 | } |
| 914 | |
| 915 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 916 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 917 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 918 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | if (err) |
| 920 | break; |
| 921 | } |
| 922 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 923 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 924 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | break; |
| 926 | |
| 927 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 928 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 929 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | break; |
| 931 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 932 | case HCISETLINKPOL: |
| 933 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 934 | HCI_INIT_TIMEOUT); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 935 | break; |
| 936 | |
| 937 | case HCISETLINKMODE: |
| 938 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 939 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 940 | break; |
| 941 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | case HCISETPTYPE: |
| 943 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 944 | break; |
| 945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 947 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 948 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | break; |
| 950 | |
| 951 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 952 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 953 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | break; |
| 955 | |
| 956 | default: |
| 957 | err = -EINVAL; |
| 958 | break; |
| 959 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | hci_dev_put(hdev); |
| 962 | return err; |
| 963 | } |
| 964 | |
| 965 | int hci_get_dev_list(void __user *arg) |
| 966 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 967 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | struct hci_dev_list_req *dl; |
| 969 | struct hci_dev_req *dr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | int n = 0, size, err; |
| 971 | __u16 dev_num; |
| 972 | |
| 973 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 974 | return -EFAULT; |
| 975 | |
| 976 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 977 | return -EINVAL; |
| 978 | |
| 979 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 980 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 981 | dl = kzalloc(size, GFP_KERNEL); |
| 982 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | return -ENOMEM; |
| 984 | |
| 985 | dr = dl->dev_req; |
| 986 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 987 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 988 | list_for_each_entry(hdev, &hci_dev_list, list) { |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 989 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 990 | cancel_delayed_work(&hdev->power_off); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 991 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 992 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 993 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 994 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | (dr + n)->dev_id = hdev->id; |
| 996 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 997 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | if (++n >= dev_num) |
| 999 | break; |
| 1000 | } |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1001 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | |
| 1003 | dl->dev_num = n; |
| 1004 | size = sizeof(*dl) + n * sizeof(*dr); |
| 1005 | |
| 1006 | err = copy_to_user(arg, dl, size); |
| 1007 | kfree(dl); |
| 1008 | |
| 1009 | return err ? -EFAULT : 0; |
| 1010 | } |
| 1011 | |
| 1012 | int hci_get_dev_info(void __user *arg) |
| 1013 | { |
| 1014 | struct hci_dev *hdev; |
| 1015 | struct hci_dev_info di; |
| 1016 | int err = 0; |
| 1017 | |
| 1018 | if (copy_from_user(&di, arg, sizeof(di))) |
| 1019 | return -EFAULT; |
| 1020 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1021 | hdev = hci_dev_get(di.dev_id); |
| 1022 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | return -ENODEV; |
| 1024 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1025 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1026 | cancel_delayed_work_sync(&hdev->power_off); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1027 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1028 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 1029 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | strcpy(di.name, hdev->name); |
| 1032 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 1033 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | di.flags = hdev->flags; |
| 1035 | di.pkt_type = hdev->pkt_type; |
| 1036 | di.acl_mtu = hdev->acl_mtu; |
| 1037 | di.acl_pkts = hdev->acl_pkts; |
| 1038 | di.sco_mtu = hdev->sco_mtu; |
| 1039 | di.sco_pkts = hdev->sco_pkts; |
| 1040 | di.link_policy = hdev->link_policy; |
| 1041 | di.link_mode = hdev->link_mode; |
| 1042 | |
| 1043 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 1044 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 1045 | |
| 1046 | if (copy_to_user(arg, &di, sizeof(di))) |
| 1047 | err = -EFAULT; |
| 1048 | |
| 1049 | hci_dev_put(hdev); |
| 1050 | |
| 1051 | return err; |
| 1052 | } |
| 1053 | |
| 1054 | /* ---- Interface to HCI drivers ---- */ |
| 1055 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1056 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 1057 | { |
| 1058 | struct hci_dev *hdev = data; |
| 1059 | |
| 1060 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 1061 | |
| 1062 | if (!blocked) |
| 1063 | return 0; |
| 1064 | |
| 1065 | hci_dev_do_close(hdev); |
| 1066 | |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
| 1070 | static const struct rfkill_ops hci_rfkill_ops = { |
| 1071 | .set_block = hci_rfkill_set_block, |
| 1072 | }; |
| 1073 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1074 | static void hci_power_on(struct work_struct *work) |
| 1075 | { |
| 1076 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
| 1077 | |
| 1078 | BT_DBG("%s", hdev->name); |
| 1079 | |
| 1080 | if (hci_dev_open(hdev->id) < 0) |
| 1081 | return; |
| 1082 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1083 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Andrei Emeltchenko | 9345d40 | 2012-06-15 10:36:42 +0300 | [diff] [blame] | 1084 | schedule_delayed_work(&hdev->power_off, HCI_AUTO_OFF_TIMEOUT); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1085 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1086 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1087 | mgmt_index_added(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | static void hci_power_off(struct work_struct *work) |
| 1091 | { |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1092 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1093 | power_off.work); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1094 | |
| 1095 | BT_DBG("%s", hdev->name); |
| 1096 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1097 | hci_dev_do_close(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1098 | } |
| 1099 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1100 | static void hci_discov_off(struct work_struct *work) |
| 1101 | { |
| 1102 | struct hci_dev *hdev; |
| 1103 | u8 scan = SCAN_PAGE; |
| 1104 | |
| 1105 | hdev = container_of(work, struct hci_dev, discov_off.work); |
| 1106 | |
| 1107 | BT_DBG("%s", hdev->name); |
| 1108 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1109 | hci_dev_lock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1110 | |
| 1111 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); |
| 1112 | |
| 1113 | hdev->discov_timeout = 0; |
| 1114 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1115 | hci_dev_unlock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1116 | } |
| 1117 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1118 | int hci_uuids_clear(struct hci_dev *hdev) |
| 1119 | { |
| 1120 | struct list_head *p, *n; |
| 1121 | |
| 1122 | list_for_each_safe(p, n, &hdev->uuids) { |
| 1123 | struct bt_uuid *uuid; |
| 1124 | |
| 1125 | uuid = list_entry(p, struct bt_uuid, list); |
| 1126 | |
| 1127 | list_del(p); |
| 1128 | kfree(uuid); |
| 1129 | } |
| 1130 | |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1134 | int hci_link_keys_clear(struct hci_dev *hdev) |
| 1135 | { |
| 1136 | struct list_head *p, *n; |
| 1137 | |
| 1138 | list_for_each_safe(p, n, &hdev->link_keys) { |
| 1139 | struct link_key *key; |
| 1140 | |
| 1141 | key = list_entry(p, struct link_key, list); |
| 1142 | |
| 1143 | list_del(p); |
| 1144 | kfree(key); |
| 1145 | } |
| 1146 | |
| 1147 | return 0; |
| 1148 | } |
| 1149 | |
Vinicius Costa Gomes | b899efaf | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1150 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
| 1151 | { |
| 1152 | struct smp_ltk *k, *tmp; |
| 1153 | |
| 1154 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1155 | list_del(&k->list); |
| 1156 | kfree(k); |
| 1157 | } |
| 1158 | |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1162 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1163 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1164 | struct link_key *k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1165 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1166 | list_for_each_entry(k, &hdev->link_keys, list) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1167 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
| 1168 | return k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1169 | |
| 1170 | return NULL; |
| 1171 | } |
| 1172 | |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1173 | 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] | 1174 | u8 key_type, u8 old_key_type) |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1175 | { |
| 1176 | /* Legacy key */ |
| 1177 | if (key_type < 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1178 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1179 | |
| 1180 | /* Debug keys are insecure so don't store them persistently */ |
| 1181 | if (key_type == HCI_LK_DEBUG_COMBINATION) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1182 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1183 | |
| 1184 | /* Changed combination key and there's no previous one */ |
| 1185 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1186 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1187 | |
| 1188 | /* Security mode 3 case */ |
| 1189 | if (!conn) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1190 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1191 | |
| 1192 | /* Neither local nor remote side had no-bonding as requirement */ |
| 1193 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1194 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1195 | |
| 1196 | /* Local side had dedicated bonding as requirement */ |
| 1197 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1198 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1199 | |
| 1200 | /* Remote side had dedicated bonding as requirement */ |
| 1201 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1202 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1203 | |
| 1204 | /* If none of the above criteria match, then don't store the key |
| 1205 | * persistently */ |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1206 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1207 | } |
| 1208 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1209 | 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] | 1210 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1211 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1212 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1213 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
| 1214 | if (k->ediv != ediv || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1215 | memcmp(rand, k->rand, sizeof(k->rand))) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1216 | continue; |
| 1217 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1218 | return k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | return NULL; |
| 1222 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1223 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1224 | 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] | 1225 | u8 addr_type) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1226 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1227 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1228 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1229 | list_for_each_entry(k, &hdev->long_term_keys, list) |
| 1230 | if (addr_type == k->bdaddr_type && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1231 | bacmp(bdaddr, &k->bdaddr) == 0) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1232 | return k; |
| 1233 | |
| 1234 | return NULL; |
| 1235 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1236 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1237 | 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] | 1238 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1239 | { |
| 1240 | struct link_key *key, *old_key; |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1241 | u8 old_key_type; |
| 1242 | bool persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1243 | |
| 1244 | old_key = hci_find_link_key(hdev, bdaddr); |
| 1245 | if (old_key) { |
| 1246 | old_key_type = old_key->type; |
| 1247 | key = old_key; |
| 1248 | } else { |
Johan Hedberg | 12adcf3 | 2011-04-28 11:29:00 -0700 | [diff] [blame] | 1249 | old_key_type = conn ? conn->key_type : 0xff; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1250 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
| 1251 | if (!key) |
| 1252 | return -ENOMEM; |
| 1253 | list_add(&key->list, &hdev->link_keys); |
| 1254 | } |
| 1255 | |
| 1256 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); |
| 1257 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1258 | /* Some buggy controller combinations generate a changed |
| 1259 | * combination key for legacy pairing even when there's no |
| 1260 | * previous key */ |
| 1261 | if (type == HCI_LK_CHANGED_COMBINATION && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1262 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1263 | type = HCI_LK_COMBINATION; |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 1264 | if (conn) |
| 1265 | conn->key_type = type; |
| 1266 | } |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1267 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1268 | bacpy(&key->bdaddr, bdaddr); |
Andrei Emeltchenko | 9b3b446 | 2012-05-23 11:31:20 +0300 | [diff] [blame] | 1269 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1270 | key->pin_len = pin_len; |
| 1271 | |
Waldemar Rymarkiewicz | b6020ba | 2011-04-28 12:07:53 +0200 | [diff] [blame] | 1272 | if (type == HCI_LK_CHANGED_COMBINATION) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1273 | key->type = old_key_type; |
Johan Hedberg | 4748fed | 2011-04-28 11:29:02 -0700 | [diff] [blame] | 1274 | else |
| 1275 | key->type = type; |
| 1276 | |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1277 | if (!new_key) |
| 1278 | return 0; |
| 1279 | |
| 1280 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); |
| 1281 | |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1282 | mgmt_new_link_key(hdev, key, persistent); |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1283 | |
Vishal Agarwal | 6ec5bca | 2012-04-16 14:44:44 +0530 | [diff] [blame] | 1284 | if (conn) |
| 1285 | conn->flush_key = !persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1286 | |
| 1287 | return 0; |
| 1288 | } |
| 1289 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1290 | 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] | 1291 | 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] | 1292 | ediv, u8 rand[8]) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1293 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1294 | struct smp_ltk *key, *old_key; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1295 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1296 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
| 1297 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1298 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1299 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
| 1300 | if (old_key) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1301 | key = old_key; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1302 | else { |
| 1303 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1304 | if (!key) |
| 1305 | return -ENOMEM; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1306 | list_add(&key->list, &hdev->long_term_keys); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1307 | } |
| 1308 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1309 | bacpy(&key->bdaddr, bdaddr); |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1310 | key->bdaddr_type = addr_type; |
| 1311 | memcpy(key->val, tk, sizeof(key->val)); |
| 1312 | key->authenticated = authenticated; |
| 1313 | key->ediv = ediv; |
| 1314 | key->enc_size = enc_size; |
| 1315 | key->type = type; |
| 1316 | memcpy(key->rand, rand, sizeof(key->rand)); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1317 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1318 | if (!new_key) |
| 1319 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1320 | |
Vinicius Costa Gomes | 261cc5a | 2012-02-02 21:08:05 -0300 | [diff] [blame] | 1321 | if (type & HCI_SMP_LTK) |
| 1322 | mgmt_new_ltk(hdev, key, 1); |
| 1323 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1324 | return 0; |
| 1325 | } |
| 1326 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1327 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1328 | { |
| 1329 | struct link_key *key; |
| 1330 | |
| 1331 | key = hci_find_link_key(hdev, bdaddr); |
| 1332 | if (!key) |
| 1333 | return -ENOENT; |
| 1334 | |
| 1335 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1336 | |
| 1337 | list_del(&key->list); |
| 1338 | kfree(key); |
| 1339 | |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
Vinicius Costa Gomes | b899efaf | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1343 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1344 | { |
| 1345 | struct smp_ltk *k, *tmp; |
| 1346 | |
| 1347 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1348 | if (bacmp(bdaddr, &k->bdaddr)) |
| 1349 | continue; |
| 1350 | |
| 1351 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1352 | |
| 1353 | list_del(&k->list); |
| 1354 | kfree(k); |
| 1355 | } |
| 1356 | |
| 1357 | return 0; |
| 1358 | } |
| 1359 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1360 | /* HCI command timer function */ |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1361 | static void hci_cmd_timeout(unsigned long arg) |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1362 | { |
| 1363 | struct hci_dev *hdev = (void *) arg; |
| 1364 | |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1365 | if (hdev->sent_cmd) { |
| 1366 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; |
| 1367 | u16 opcode = __le16_to_cpu(sent->opcode); |
| 1368 | |
| 1369 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); |
| 1370 | } else { |
| 1371 | BT_ERR("%s command tx timeout", hdev->name); |
| 1372 | } |
| 1373 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1374 | atomic_set(&hdev->cmd_cnt, 1); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1375 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1376 | } |
| 1377 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1378 | 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] | 1379 | bdaddr_t *bdaddr) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1380 | { |
| 1381 | struct oob_data *data; |
| 1382 | |
| 1383 | list_for_each_entry(data, &hdev->remote_oob_data, list) |
| 1384 | if (bacmp(bdaddr, &data->bdaddr) == 0) |
| 1385 | return data; |
| 1386 | |
| 1387 | return NULL; |
| 1388 | } |
| 1389 | |
| 1390 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1391 | { |
| 1392 | struct oob_data *data; |
| 1393 | |
| 1394 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1395 | if (!data) |
| 1396 | return -ENOENT; |
| 1397 | |
| 1398 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1399 | |
| 1400 | list_del(&data->list); |
| 1401 | kfree(data); |
| 1402 | |
| 1403 | return 0; |
| 1404 | } |
| 1405 | |
| 1406 | int hci_remote_oob_data_clear(struct hci_dev *hdev) |
| 1407 | { |
| 1408 | struct oob_data *data, *n; |
| 1409 | |
| 1410 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 1411 | list_del(&data->list); |
| 1412 | kfree(data); |
| 1413 | } |
| 1414 | |
| 1415 | return 0; |
| 1416 | } |
| 1417 | |
| 1418 | 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] | 1419 | u8 *randomizer) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1420 | { |
| 1421 | struct oob_data *data; |
| 1422 | |
| 1423 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1424 | |
| 1425 | if (!data) { |
| 1426 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
| 1427 | if (!data) |
| 1428 | return -ENOMEM; |
| 1429 | |
| 1430 | bacpy(&data->bdaddr, bdaddr); |
| 1431 | list_add(&data->list, &hdev->remote_oob_data); |
| 1432 | } |
| 1433 | |
| 1434 | memcpy(data->hash, hash, sizeof(data->hash)); |
| 1435 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); |
| 1436 | |
| 1437 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); |
| 1438 | |
| 1439 | return 0; |
| 1440 | } |
| 1441 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1442 | 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] | 1443 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1444 | struct bdaddr_list *b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1445 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1446 | list_for_each_entry(b, &hdev->blacklist, list) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1447 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
| 1448 | return b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1449 | |
| 1450 | return NULL; |
| 1451 | } |
| 1452 | |
| 1453 | int hci_blacklist_clear(struct hci_dev *hdev) |
| 1454 | { |
| 1455 | struct list_head *p, *n; |
| 1456 | |
| 1457 | list_for_each_safe(p, n, &hdev->blacklist) { |
| 1458 | struct bdaddr_list *b; |
| 1459 | |
| 1460 | b = list_entry(p, struct bdaddr_list, list); |
| 1461 | |
| 1462 | list_del(p); |
| 1463 | kfree(b); |
| 1464 | } |
| 1465 | |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1469 | 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] | 1470 | { |
| 1471 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1472 | |
| 1473 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
| 1474 | return -EBADF; |
| 1475 | |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1476 | if (hci_blacklist_lookup(hdev, bdaddr)) |
| 1477 | return -EEXIST; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1478 | |
| 1479 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1480 | if (!entry) |
| 1481 | return -ENOMEM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1482 | |
| 1483 | bacpy(&entry->bdaddr, bdaddr); |
| 1484 | |
| 1485 | list_add(&entry->list, &hdev->blacklist); |
| 1486 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1487 | return mgmt_device_blocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1488 | } |
| 1489 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1490 | 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] | 1491 | { |
| 1492 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1493 | |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1494 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1495 | return hci_blacklist_clear(hdev); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1496 | |
| 1497 | entry = hci_blacklist_lookup(hdev, bdaddr); |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1498 | if (!entry) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1499 | return -ENOENT; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1500 | |
| 1501 | list_del(&entry->list); |
| 1502 | kfree(entry); |
| 1503 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1504 | return mgmt_device_unblocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1505 | } |
| 1506 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1507 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
| 1508 | { |
| 1509 | struct le_scan_params *param = (struct le_scan_params *) opt; |
| 1510 | struct hci_cp_le_set_scan_param cp; |
| 1511 | |
| 1512 | memset(&cp, 0, sizeof(cp)); |
| 1513 | cp.type = param->type; |
| 1514 | cp.interval = cpu_to_le16(param->interval); |
| 1515 | cp.window = cpu_to_le16(param->window); |
| 1516 | |
| 1517 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); |
| 1518 | } |
| 1519 | |
| 1520 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) |
| 1521 | { |
| 1522 | struct hci_cp_le_set_scan_enable cp; |
| 1523 | |
| 1524 | memset(&cp, 0, sizeof(cp)); |
| 1525 | cp.enable = 1; |
Andre Guedes | 0431a43 | 2012-05-31 20:01:41 -0300 | [diff] [blame] | 1526 | cp.filter_dup = 1; |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1527 | |
| 1528 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1529 | } |
| 1530 | |
| 1531 | 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] | 1532 | u16 window, int timeout) |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1533 | { |
| 1534 | long timeo = msecs_to_jiffies(3000); |
| 1535 | struct le_scan_params param; |
| 1536 | int err; |
| 1537 | |
| 1538 | BT_DBG("%s", hdev->name); |
| 1539 | |
| 1540 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1541 | return -EINPROGRESS; |
| 1542 | |
| 1543 | param.type = type; |
| 1544 | param.interval = interval; |
| 1545 | param.window = window; |
| 1546 | |
| 1547 | hci_req_lock(hdev); |
| 1548 | |
| 1549 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1550 | timeo); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1551 | if (!err) |
| 1552 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); |
| 1553 | |
| 1554 | hci_req_unlock(hdev); |
| 1555 | |
| 1556 | if (err < 0) |
| 1557 | return err; |
| 1558 | |
| 1559 | schedule_delayed_work(&hdev->le_scan_disable, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1560 | msecs_to_jiffies(timeout)); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1561 | |
| 1562 | return 0; |
| 1563 | } |
| 1564 | |
Andre Guedes | 7dbfac1 | 2012-03-15 16:52:07 -0300 | [diff] [blame] | 1565 | int hci_cancel_le_scan(struct hci_dev *hdev) |
| 1566 | { |
| 1567 | BT_DBG("%s", hdev->name); |
| 1568 | |
| 1569 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1570 | return -EALREADY; |
| 1571 | |
| 1572 | if (cancel_delayed_work(&hdev->le_scan_disable)) { |
| 1573 | struct hci_cp_le_set_scan_enable cp; |
| 1574 | |
| 1575 | /* Send HCI command to disable LE Scan */ |
| 1576 | memset(&cp, 0, sizeof(cp)); |
| 1577 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1578 | } |
| 1579 | |
| 1580 | return 0; |
| 1581 | } |
| 1582 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1583 | static void le_scan_disable_work(struct work_struct *work) |
| 1584 | { |
| 1585 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1586 | le_scan_disable.work); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1587 | struct hci_cp_le_set_scan_enable cp; |
| 1588 | |
| 1589 | BT_DBG("%s", hdev->name); |
| 1590 | |
| 1591 | memset(&cp, 0, sizeof(cp)); |
| 1592 | |
| 1593 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1594 | } |
| 1595 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1596 | static void le_scan_work(struct work_struct *work) |
| 1597 | { |
| 1598 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); |
| 1599 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1600 | |
| 1601 | BT_DBG("%s", hdev->name); |
| 1602 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1603 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
| 1604 | param->timeout); |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | 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] | 1608 | int timeout) |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1609 | { |
| 1610 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1611 | |
| 1612 | BT_DBG("%s", hdev->name); |
| 1613 | |
| 1614 | if (work_busy(&hdev->le_scan)) |
| 1615 | return -EINPROGRESS; |
| 1616 | |
| 1617 | param->type = type; |
| 1618 | param->interval = interval; |
| 1619 | param->window = window; |
| 1620 | param->timeout = timeout; |
| 1621 | |
| 1622 | queue_work(system_long_wq, &hdev->le_scan); |
| 1623 | |
| 1624 | return 0; |
| 1625 | } |
| 1626 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1627 | /* Alloc HCI device */ |
| 1628 | struct hci_dev *hci_alloc_dev(void) |
| 1629 | { |
| 1630 | struct hci_dev *hdev; |
| 1631 | |
| 1632 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
| 1633 | if (!hdev) |
| 1634 | return NULL; |
| 1635 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1636 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
| 1637 | hdev->esco_type = (ESCO_HV1); |
| 1638 | hdev->link_mode = (HCI_LM_ACCEPT); |
| 1639 | hdev->io_capability = 0x03; /* No Input No Output */ |
| 1640 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1641 | hdev->sniff_max_interval = 800; |
| 1642 | hdev->sniff_min_interval = 80; |
| 1643 | |
| 1644 | mutex_init(&hdev->lock); |
| 1645 | mutex_init(&hdev->req_lock); |
| 1646 | |
| 1647 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
| 1648 | INIT_LIST_HEAD(&hdev->blacklist); |
| 1649 | INIT_LIST_HEAD(&hdev->uuids); |
| 1650 | INIT_LIST_HEAD(&hdev->link_keys); |
| 1651 | INIT_LIST_HEAD(&hdev->long_term_keys); |
| 1652 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1653 | |
| 1654 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
| 1655 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
| 1656 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
| 1657 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1658 | INIT_WORK(&hdev->le_scan, le_scan_work); |
| 1659 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1660 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
| 1661 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
| 1662 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); |
| 1663 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1664 | skb_queue_head_init(&hdev->driver_init); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1665 | skb_queue_head_init(&hdev->rx_q); |
| 1666 | skb_queue_head_init(&hdev->cmd_q); |
| 1667 | skb_queue_head_init(&hdev->raw_q); |
| 1668 | |
| 1669 | init_waitqueue_head(&hdev->req_wait_q); |
| 1670 | |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1671 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1672 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1673 | hci_init_sysfs(hdev); |
| 1674 | discovery_init(hdev); |
| 1675 | hci_conn_hash_init(hdev); |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1676 | |
| 1677 | return hdev; |
| 1678 | } |
| 1679 | EXPORT_SYMBOL(hci_alloc_dev); |
| 1680 | |
| 1681 | /* Free HCI device */ |
| 1682 | void hci_free_dev(struct hci_dev *hdev) |
| 1683 | { |
| 1684 | skb_queue_purge(&hdev->driver_init); |
| 1685 | |
| 1686 | /* will free via device release */ |
| 1687 | put_device(&hdev->dev); |
| 1688 | } |
| 1689 | EXPORT_SYMBOL(hci_free_dev); |
| 1690 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | /* Register HCI device */ |
| 1692 | int hci_register_dev(struct hci_dev *hdev) |
| 1693 | { |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1694 | int id, error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | |
David Herrmann | 010666a | 2012-01-07 15:47:07 +0100 | [diff] [blame] | 1696 | if (!hdev->open || !hdev->close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | return -EINVAL; |
| 1698 | |
Mat Martineau | 08add51 | 2011-11-02 16:18:36 -0700 | [diff] [blame] | 1699 | /* Do not allow HCI_AMP devices to register at index 0, |
| 1700 | * so the index can be used as the AMP controller ID. |
| 1701 | */ |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1702 | switch (hdev->dev_type) { |
| 1703 | case HCI_BREDR: |
| 1704 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
| 1705 | break; |
| 1706 | case HCI_AMP: |
| 1707 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); |
| 1708 | break; |
| 1709 | default: |
| 1710 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1712 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1713 | if (id < 0) |
| 1714 | return id; |
| 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 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1721 | write_lock(&hci_dev_list_lock); |
| 1722 | list_add(&hdev->list, &hci_dev_list); |
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_SETUP, &hdev->dev_flags); |
Andrei Emeltchenko | ce2be9a | 2012-06-29 15:07:00 +0300 | [diff] [blame] | 1747 | |
| 1748 | if (hdev->dev_type != HCI_AMP) |
| 1749 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
| 1750 | |
Gustavo F. Padovan | 7f97104 | 2011-12-18 12:40:32 -0200 | [diff] [blame] | 1751 | schedule_work(&hdev->power_on); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1752 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | hci_notify(hdev, HCI_DEV_REG); |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1754 | hci_dev_hold(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
| 1756 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1757 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1758 | err_wqueue: |
| 1759 | destroy_workqueue(hdev->workqueue); |
| 1760 | err: |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1761 | ida_simple_remove(&hci_index_ida, hdev->id); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1762 | write_lock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1763 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1764 | write_unlock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1765 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1766 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | } |
| 1768 | EXPORT_SYMBOL(hci_register_dev); |
| 1769 | |
| 1770 | /* Unregister HCI device */ |
David Herrmann | 5973563 | 2011-10-26 10:43:19 +0200 | [diff] [blame] | 1771 | void hci_unregister_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | { |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1773 | int i, id; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1774 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1775 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 1777 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
| 1778 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1779 | id = hdev->id; |
| 1780 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1781 | write_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1783 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | |
| 1785 | hci_dev_do_close(hdev); |
| 1786 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1787 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1788 | kfree_skb(hdev->reassembly[i]); |
| 1789 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1790 | if (!test_bit(HCI_INIT, &hdev->flags) && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1791 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1792 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1793 | mgmt_index_removed(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1794 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 1795 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1796 | |
Johan Hedberg | 2e58ef3 | 2011-11-08 20:40:15 +0200 | [diff] [blame] | 1797 | /* mgmt_index_removed should take care of emptying the |
| 1798 | * pending list */ |
| 1799 | BUG_ON(!list_empty(&hdev->mgmt_pending)); |
| 1800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1802 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1803 | if (hdev->rfkill) { |
| 1804 | rfkill_unregister(hdev->rfkill); |
| 1805 | rfkill_destroy(hdev->rfkill); |
| 1806 | } |
| 1807 | |
David Herrmann | ce24297 | 2011-10-08 14:58:48 +0200 | [diff] [blame] | 1808 | hci_del_sysfs(hdev); |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1809 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1810 | destroy_workqueue(hdev->workqueue); |
| 1811 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1812 | hci_dev_lock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1813 | hci_blacklist_clear(hdev); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1814 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1815 | hci_link_keys_clear(hdev); |
Vinicius Costa Gomes | b899efaf | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1816 | hci_smp_ltks_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1817 | hci_remote_oob_data_clear(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1818 | hci_dev_unlock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1819 | |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1820 | hci_dev_put(hdev); |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1821 | |
| 1822 | ida_simple_remove(&hci_index_ida, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | } |
| 1824 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1825 | |
| 1826 | /* Suspend HCI device */ |
| 1827 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1828 | { |
| 1829 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1830 | return 0; |
| 1831 | } |
| 1832 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1833 | |
| 1834 | /* Resume HCI device */ |
| 1835 | int hci_resume_dev(struct hci_dev *hdev) |
| 1836 | { |
| 1837 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1838 | return 0; |
| 1839 | } |
| 1840 | EXPORT_SYMBOL(hci_resume_dev); |
| 1841 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1842 | /* Receive frame from HCI drivers */ |
| 1843 | int hci_recv_frame(struct sk_buff *skb) |
| 1844 | { |
| 1845 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1846 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1847 | && !test_bit(HCI_INIT, &hdev->flags))) { |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1848 | kfree_skb(skb); |
| 1849 | return -ENXIO; |
| 1850 | } |
| 1851 | |
| 1852 | /* Incomming skb */ |
| 1853 | bt_cb(skb)->incoming = 1; |
| 1854 | |
| 1855 | /* Time stamp */ |
| 1856 | __net_timestamp(skb); |
| 1857 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1858 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 1859 | queue_work(hdev->workqueue, &hdev->rx_work); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1860 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1861 | return 0; |
| 1862 | } |
| 1863 | EXPORT_SYMBOL(hci_recv_frame); |
| 1864 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1865 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1866 | int count, __u8 index) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1867 | { |
| 1868 | int len = 0; |
| 1869 | int hlen = 0; |
| 1870 | int remain = count; |
| 1871 | struct sk_buff *skb; |
| 1872 | struct bt_skb_cb *scb; |
| 1873 | |
| 1874 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1875 | index >= NUM_REASSEMBLY) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1876 | return -EILSEQ; |
| 1877 | |
| 1878 | skb = hdev->reassembly[index]; |
| 1879 | |
| 1880 | if (!skb) { |
| 1881 | switch (type) { |
| 1882 | case HCI_ACLDATA_PKT: |
| 1883 | len = HCI_MAX_FRAME_SIZE; |
| 1884 | hlen = HCI_ACL_HDR_SIZE; |
| 1885 | break; |
| 1886 | case HCI_EVENT_PKT: |
| 1887 | len = HCI_MAX_EVENT_SIZE; |
| 1888 | hlen = HCI_EVENT_HDR_SIZE; |
| 1889 | break; |
| 1890 | case HCI_SCODATA_PKT: |
| 1891 | len = HCI_MAX_SCO_SIZE; |
| 1892 | hlen = HCI_SCO_HDR_SIZE; |
| 1893 | break; |
| 1894 | } |
| 1895 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1896 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1897 | if (!skb) |
| 1898 | return -ENOMEM; |
| 1899 | |
| 1900 | scb = (void *) skb->cb; |
| 1901 | scb->expect = hlen; |
| 1902 | scb->pkt_type = type; |
| 1903 | |
| 1904 | skb->dev = (void *) hdev; |
| 1905 | hdev->reassembly[index] = skb; |
| 1906 | } |
| 1907 | |
| 1908 | while (count) { |
| 1909 | scb = (void *) skb->cb; |
Dan Carpenter | 89bb46d | 2012-02-28 09:57:59 +0300 | [diff] [blame] | 1910 | len = min_t(uint, scb->expect, count); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1911 | |
| 1912 | memcpy(skb_put(skb, len), data, len); |
| 1913 | |
| 1914 | count -= len; |
| 1915 | data += len; |
| 1916 | scb->expect -= len; |
| 1917 | remain = count; |
| 1918 | |
| 1919 | switch (type) { |
| 1920 | case HCI_EVENT_PKT: |
| 1921 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1922 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1923 | scb->expect = h->plen; |
| 1924 | |
| 1925 | if (skb_tailroom(skb) < scb->expect) { |
| 1926 | kfree_skb(skb); |
| 1927 | hdev->reassembly[index] = NULL; |
| 1928 | return -ENOMEM; |
| 1929 | } |
| 1930 | } |
| 1931 | break; |
| 1932 | |
| 1933 | case HCI_ACLDATA_PKT: |
| 1934 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1935 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1936 | scb->expect = __le16_to_cpu(h->dlen); |
| 1937 | |
| 1938 | if (skb_tailroom(skb) < scb->expect) { |
| 1939 | kfree_skb(skb); |
| 1940 | hdev->reassembly[index] = NULL; |
| 1941 | return -ENOMEM; |
| 1942 | } |
| 1943 | } |
| 1944 | break; |
| 1945 | |
| 1946 | case HCI_SCODATA_PKT: |
| 1947 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1948 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1949 | scb->expect = h->dlen; |
| 1950 | |
| 1951 | if (skb_tailroom(skb) < scb->expect) { |
| 1952 | kfree_skb(skb); |
| 1953 | hdev->reassembly[index] = NULL; |
| 1954 | return -ENOMEM; |
| 1955 | } |
| 1956 | } |
| 1957 | break; |
| 1958 | } |
| 1959 | |
| 1960 | if (scb->expect == 0) { |
| 1961 | /* Complete frame */ |
| 1962 | |
| 1963 | bt_cb(skb)->pkt_type = type; |
| 1964 | hci_recv_frame(skb); |
| 1965 | |
| 1966 | hdev->reassembly[index] = NULL; |
| 1967 | return remain; |
| 1968 | } |
| 1969 | } |
| 1970 | |
| 1971 | return remain; |
| 1972 | } |
| 1973 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1974 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1975 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1976 | int rem = 0; |
| 1977 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1978 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1979 | return -EILSEQ; |
| 1980 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1981 | while (count) { |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1982 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1983 | if (rem < 0) |
| 1984 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1985 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1986 | data += (count - rem); |
| 1987 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 1988 | } |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1989 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1990 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1991 | } |
| 1992 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1993 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1994 | #define STREAM_REASSEMBLY 0 |
| 1995 | |
| 1996 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 1997 | { |
| 1998 | int type; |
| 1999 | int rem = 0; |
| 2000 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 2001 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2002 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 2003 | |
| 2004 | if (!skb) { |
| 2005 | struct { char type; } *pkt; |
| 2006 | |
| 2007 | /* Start of the frame */ |
| 2008 | pkt = data; |
| 2009 | type = pkt->type; |
| 2010 | |
| 2011 | data++; |
| 2012 | count--; |
| 2013 | } else |
| 2014 | type = bt_cb(skb)->pkt_type; |
| 2015 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 2016 | rem = hci_reassembly(hdev, type, data, count, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2017 | STREAM_REASSEMBLY); |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2018 | if (rem < 0) |
| 2019 | return rem; |
| 2020 | |
| 2021 | data += (count - rem); |
| 2022 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 2023 | } |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2024 | |
| 2025 | return rem; |
| 2026 | } |
| 2027 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 2028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | /* ---- Interface to upper protocols ---- */ |
| 2030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | int hci_register_cb(struct hci_cb *cb) |
| 2032 | { |
| 2033 | BT_DBG("%p name %s", cb, cb->name); |
| 2034 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2035 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | list_add(&cb->list, &hci_cb_list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2037 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | |
| 2039 | return 0; |
| 2040 | } |
| 2041 | EXPORT_SYMBOL(hci_register_cb); |
| 2042 | |
| 2043 | int hci_unregister_cb(struct hci_cb *cb) |
| 2044 | { |
| 2045 | BT_DBG("%p name %s", cb, cb->name); |
| 2046 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2047 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | list_del(&cb->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2049 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | |
| 2051 | return 0; |
| 2052 | } |
| 2053 | EXPORT_SYMBOL(hci_unregister_cb); |
| 2054 | |
| 2055 | static int hci_send_frame(struct sk_buff *skb) |
| 2056 | { |
| 2057 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 2058 | |
| 2059 | if (!hdev) { |
| 2060 | kfree_skb(skb); |
| 2061 | return -ENODEV; |
| 2062 | } |
| 2063 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2064 | 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] | 2065 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2066 | /* Time stamp */ |
| 2067 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2069 | /* Send copy to monitor */ |
| 2070 | hci_send_to_monitor(hdev, skb); |
| 2071 | |
| 2072 | if (atomic_read(&hdev->promisc)) { |
| 2073 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2074 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | } |
| 2076 | |
| 2077 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 2078 | skb_orphan(skb); |
| 2079 | |
| 2080 | return hdev->send(skb); |
| 2081 | } |
| 2082 | |
| 2083 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2084 | 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] | 2085 | { |
| 2086 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 2087 | struct hci_command_hdr *hdr; |
| 2088 | struct sk_buff *skb; |
| 2089 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2090 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | |
| 2092 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 2093 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 2094 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | return -ENOMEM; |
| 2096 | } |
| 2097 | |
| 2098 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2099 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | hdr->plen = plen; |
| 2101 | |
| 2102 | if (plen) |
| 2103 | memcpy(skb_put(skb, plen), param, plen); |
| 2104 | |
| 2105 | BT_DBG("skb len %d", skb->len); |
| 2106 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2107 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2109 | |
Johan Hedberg | a5040efa | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 2110 | if (test_bit(HCI_INIT, &hdev->flags)) |
| 2111 | hdev->init_last_cmd = opcode; |
| 2112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2114 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | |
| 2116 | return 0; |
| 2117 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | |
| 2119 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2120 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | { |
| 2122 | struct hci_command_hdr *hdr; |
| 2123 | |
| 2124 | if (!hdev->sent_cmd) |
| 2125 | return NULL; |
| 2126 | |
| 2127 | hdr = (void *) hdev->sent_cmd->data; |
| 2128 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2129 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | return NULL; |
| 2131 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2132 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
| 2134 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 2135 | } |
| 2136 | |
| 2137 | /* Send ACL data */ |
| 2138 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 2139 | { |
| 2140 | struct hci_acl_hdr *hdr; |
| 2141 | int len = skb->len; |
| 2142 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2143 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 2144 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2145 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2146 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 2147 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | } |
| 2149 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2150 | 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] | 2151 | struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | { |
| 2153 | struct hci_dev *hdev = conn->hdev; |
| 2154 | struct sk_buff *list; |
| 2155 | |
Gustavo Padovan | 087bfd9 | 2012-05-11 13:16:11 -0300 | [diff] [blame] | 2156 | skb->len = skb_headlen(skb); |
| 2157 | skb->data_len = 0; |
| 2158 | |
| 2159 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
| 2160 | hci_add_acl_hdr(skb, conn->handle, flags); |
| 2161 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2162 | list = skb_shinfo(skb)->frag_list; |
| 2163 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2164 | /* Non fragmented */ |
| 2165 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 2166 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2167 | skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | } else { |
| 2169 | /* Fragmented */ |
| 2170 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2171 | |
| 2172 | skb_shinfo(skb)->frag_list = NULL; |
| 2173 | |
| 2174 | /* Queue all fragments atomically */ |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2175 | spin_lock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2177 | __skb_queue_tail(queue, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2178 | |
| 2179 | flags &= ~ACL_START; |
| 2180 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | do { |
| 2182 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2185 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2186 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | |
| 2188 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2189 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2190 | __skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | } while (list); |
| 2192 | |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2193 | spin_unlock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2195 | } |
| 2196 | |
| 2197 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) |
| 2198 | { |
| 2199 | struct hci_conn *conn = chan->conn; |
| 2200 | struct hci_dev *hdev = conn->hdev; |
| 2201 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2202 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2203 | |
| 2204 | skb->dev = (void *) hdev; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2205 | |
| 2206 | hci_queue_acl(conn, &chan->data_q, skb, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2208 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
| 2211 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 2212 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | { |
| 2214 | struct hci_dev *hdev = conn->hdev; |
| 2215 | struct hci_sco_hdr hdr; |
| 2216 | |
| 2217 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 2218 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2219 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | hdr.dlen = skb->len; |
| 2221 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2222 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 2223 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2224 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | |
| 2226 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2227 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | skb_queue_tail(&conn->data_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2230 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | |
| 2233 | /* ---- HCI TX task (outgoing data) ---- */ |
| 2234 | |
| 2235 | /* HCI Connection scheduler */ |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2236 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
| 2237 | int *quote) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2238 | { |
| 2239 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2240 | struct hci_conn *conn = NULL, *c; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2241 | unsigned int num = 0, min = ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2243 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2244 | * added and removed with TX task disabled. */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2245 | |
| 2246 | rcu_read_lock(); |
| 2247 | |
| 2248 | list_for_each_entry_rcu(c, &h->list, list) { |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2249 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2251 | |
| 2252 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 2253 | continue; |
| 2254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | num++; |
| 2256 | |
| 2257 | if (c->sent < min) { |
| 2258 | min = c->sent; |
| 2259 | conn = c; |
| 2260 | } |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2261 | |
| 2262 | if (hci_conn_num(hdev, type) == num) |
| 2263 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | } |
| 2265 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2266 | rcu_read_unlock(); |
| 2267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2269 | int cnt, q; |
| 2270 | |
| 2271 | switch (conn->type) { |
| 2272 | case ACL_LINK: |
| 2273 | cnt = hdev->acl_cnt; |
| 2274 | break; |
| 2275 | case SCO_LINK: |
| 2276 | case ESCO_LINK: |
| 2277 | cnt = hdev->sco_cnt; |
| 2278 | break; |
| 2279 | case LE_LINK: |
| 2280 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2281 | break; |
| 2282 | default: |
| 2283 | cnt = 0; |
| 2284 | BT_ERR("Unknown link type"); |
| 2285 | } |
| 2286 | |
| 2287 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | *quote = q ? q : 1; |
| 2289 | } else |
| 2290 | *quote = 0; |
| 2291 | |
| 2292 | BT_DBG("conn %p quote %d", conn, *quote); |
| 2293 | return conn; |
| 2294 | } |
| 2295 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2296 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | { |
| 2298 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2299 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2301 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2303 | rcu_read_lock(); |
| 2304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | /* Kill stalled connections */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2306 | list_for_each_entry_rcu(c, &h->list, list) { |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2307 | if (c->type == type && c->sent) { |
| 2308 | BT_ERR("%s killing stalled connection %s", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2309 | hdev->name, batostr(&c->dst)); |
Andrei Emeltchenko | 7490c6c | 2012-06-01 16:18:25 +0300 | [diff] [blame] | 2310 | hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | } |
| 2312 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2313 | |
| 2314 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | } |
| 2316 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2317 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
| 2318 | int *quote) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2319 | { |
| 2320 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2321 | struct hci_chan *chan = NULL; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2322 | unsigned int num = 0, min = ~0, cur_prio = 0; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2323 | struct hci_conn *conn; |
| 2324 | int cnt, q, conn_num = 0; |
| 2325 | |
| 2326 | BT_DBG("%s", hdev->name); |
| 2327 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2328 | rcu_read_lock(); |
| 2329 | |
| 2330 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2331 | struct hci_chan *tmp; |
| 2332 | |
| 2333 | if (conn->type != type) |
| 2334 | continue; |
| 2335 | |
| 2336 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2337 | continue; |
| 2338 | |
| 2339 | conn_num++; |
| 2340 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2341 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2342 | struct sk_buff *skb; |
| 2343 | |
| 2344 | if (skb_queue_empty(&tmp->data_q)) |
| 2345 | continue; |
| 2346 | |
| 2347 | skb = skb_peek(&tmp->data_q); |
| 2348 | if (skb->priority < cur_prio) |
| 2349 | continue; |
| 2350 | |
| 2351 | if (skb->priority > cur_prio) { |
| 2352 | num = 0; |
| 2353 | min = ~0; |
| 2354 | cur_prio = skb->priority; |
| 2355 | } |
| 2356 | |
| 2357 | num++; |
| 2358 | |
| 2359 | if (conn->sent < min) { |
| 2360 | min = conn->sent; |
| 2361 | chan = tmp; |
| 2362 | } |
| 2363 | } |
| 2364 | |
| 2365 | if (hci_conn_num(hdev, type) == conn_num) |
| 2366 | break; |
| 2367 | } |
| 2368 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2369 | rcu_read_unlock(); |
| 2370 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2371 | if (!chan) |
| 2372 | return NULL; |
| 2373 | |
| 2374 | switch (chan->conn->type) { |
| 2375 | case ACL_LINK: |
| 2376 | cnt = hdev->acl_cnt; |
| 2377 | break; |
| 2378 | case SCO_LINK: |
| 2379 | case ESCO_LINK: |
| 2380 | cnt = hdev->sco_cnt; |
| 2381 | break; |
| 2382 | case LE_LINK: |
| 2383 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2384 | break; |
| 2385 | default: |
| 2386 | cnt = 0; |
| 2387 | BT_ERR("Unknown link type"); |
| 2388 | } |
| 2389 | |
| 2390 | q = cnt / num; |
| 2391 | *quote = q ? q : 1; |
| 2392 | BT_DBG("chan %p quote %d", chan, *quote); |
| 2393 | return chan; |
| 2394 | } |
| 2395 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2396 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
| 2397 | { |
| 2398 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2399 | struct hci_conn *conn; |
| 2400 | int num = 0; |
| 2401 | |
| 2402 | BT_DBG("%s", hdev->name); |
| 2403 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2404 | rcu_read_lock(); |
| 2405 | |
| 2406 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2407 | struct hci_chan *chan; |
| 2408 | |
| 2409 | if (conn->type != type) |
| 2410 | continue; |
| 2411 | |
| 2412 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2413 | continue; |
| 2414 | |
| 2415 | num++; |
| 2416 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2417 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2418 | struct sk_buff *skb; |
| 2419 | |
| 2420 | if (chan->sent) { |
| 2421 | chan->sent = 0; |
| 2422 | continue; |
| 2423 | } |
| 2424 | |
| 2425 | if (skb_queue_empty(&chan->data_q)) |
| 2426 | continue; |
| 2427 | |
| 2428 | skb = skb_peek(&chan->data_q); |
| 2429 | if (skb->priority >= HCI_PRIO_MAX - 1) |
| 2430 | continue; |
| 2431 | |
| 2432 | skb->priority = HCI_PRIO_MAX - 1; |
| 2433 | |
| 2434 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2435 | skb->priority); |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2436 | } |
| 2437 | |
| 2438 | if (hci_conn_num(hdev, type) == num) |
| 2439 | break; |
| 2440 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2441 | |
| 2442 | rcu_read_unlock(); |
| 2443 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2444 | } |
| 2445 | |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2446 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
| 2447 | { |
| 2448 | /* Calculate count of blocks used by this packet */ |
| 2449 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); |
| 2450 | } |
| 2451 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2452 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2455 | /* ACL tx timeout must be longer than maximum |
| 2456 | * link supervision timeout (40.9 seconds) */ |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2457 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 2458 | HCI_ACL_TX_TIMEOUT)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2459 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2460 | } |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2461 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2463 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2464 | { |
| 2465 | unsigned int cnt = hdev->acl_cnt; |
| 2466 | struct hci_chan *chan; |
| 2467 | struct sk_buff *skb; |
| 2468 | int quote; |
| 2469 | |
| 2470 | __check_timeout(hdev, cnt); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2471 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2472 | while (hdev->acl_cnt && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2473 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2474 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2475 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2476 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2477 | skb->len, skb->priority); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2478 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2479 | /* Stop if priority has changed */ |
| 2480 | if (skb->priority < priority) |
| 2481 | break; |
| 2482 | |
| 2483 | skb = skb_dequeue(&chan->data_q); |
| 2484 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2485 | hci_conn_enter_active_mode(chan->conn, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 2486 | bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2487 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | hci_send_frame(skb); |
| 2489 | hdev->acl_last_tx = jiffies; |
| 2490 | |
| 2491 | hdev->acl_cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2492 | chan->sent++; |
| 2493 | chan->conn->sent++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2494 | } |
| 2495 | } |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2496 | |
| 2497 | if (cnt != hdev->acl_cnt) |
| 2498 | hci_prio_recalculate(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | } |
| 2500 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2501 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2502 | { |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2503 | unsigned int cnt = hdev->block_cnt; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2504 | struct hci_chan *chan; |
| 2505 | struct sk_buff *skb; |
| 2506 | int quote; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2507 | |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2508 | __check_timeout(hdev, cnt); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2509 | |
| 2510 | while (hdev->block_cnt > 0 && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2511 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2512 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2513 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { |
| 2514 | int blocks; |
| 2515 | |
| 2516 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2517 | skb->len, skb->priority); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2518 | |
| 2519 | /* Stop if priority has changed */ |
| 2520 | if (skb->priority < priority) |
| 2521 | break; |
| 2522 | |
| 2523 | skb = skb_dequeue(&chan->data_q); |
| 2524 | |
| 2525 | blocks = __get_blocks(hdev, skb); |
| 2526 | if (blocks > hdev->block_cnt) |
| 2527 | return; |
| 2528 | |
| 2529 | hci_conn_enter_active_mode(chan->conn, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2530 | bt_cb(skb)->force_active); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2531 | |
| 2532 | hci_send_frame(skb); |
| 2533 | hdev->acl_last_tx = jiffies; |
| 2534 | |
| 2535 | hdev->block_cnt -= blocks; |
| 2536 | quote -= blocks; |
| 2537 | |
| 2538 | chan->sent += blocks; |
| 2539 | chan->conn->sent += blocks; |
| 2540 | } |
| 2541 | } |
| 2542 | |
| 2543 | if (cnt != hdev->block_cnt) |
| 2544 | hci_prio_recalculate(hdev, ACL_LINK); |
| 2545 | } |
| 2546 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2547 | static void hci_sched_acl(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2548 | { |
| 2549 | BT_DBG("%s", hdev->name); |
| 2550 | |
| 2551 | if (!hci_conn_num(hdev, ACL_LINK)) |
| 2552 | return; |
| 2553 | |
| 2554 | switch (hdev->flow_ctl_mode) { |
| 2555 | case HCI_FLOW_CTL_MODE_PACKET_BASED: |
| 2556 | hci_sched_acl_pkt(hdev); |
| 2557 | break; |
| 2558 | |
| 2559 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: |
| 2560 | hci_sched_acl_blk(hdev); |
| 2561 | break; |
| 2562 | } |
| 2563 | } |
| 2564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | /* Schedule SCO */ |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2566 | static void hci_sched_sco(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2567 | { |
| 2568 | struct hci_conn *conn; |
| 2569 | struct sk_buff *skb; |
| 2570 | int quote; |
| 2571 | |
| 2572 | BT_DBG("%s", hdev->name); |
| 2573 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2574 | if (!hci_conn_num(hdev, SCO_LINK)) |
| 2575 | return; |
| 2576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 2578 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2579 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2580 | hci_send_frame(skb); |
| 2581 | |
| 2582 | conn->sent++; |
| 2583 | if (conn->sent == ~0) |
| 2584 | conn->sent = 0; |
| 2585 | } |
| 2586 | } |
| 2587 | } |
| 2588 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2589 | static void hci_sched_esco(struct hci_dev *hdev) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2590 | { |
| 2591 | struct hci_conn *conn; |
| 2592 | struct sk_buff *skb; |
| 2593 | int quote; |
| 2594 | |
| 2595 | BT_DBG("%s", hdev->name); |
| 2596 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2597 | if (!hci_conn_num(hdev, ESCO_LINK)) |
| 2598 | return; |
| 2599 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 2600 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
| 2601 | "e))) { |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2602 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2603 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2604 | hci_send_frame(skb); |
| 2605 | |
| 2606 | conn->sent++; |
| 2607 | if (conn->sent == ~0) |
| 2608 | conn->sent = 0; |
| 2609 | } |
| 2610 | } |
| 2611 | } |
| 2612 | |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2613 | static void hci_sched_le(struct hci_dev *hdev) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2614 | { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2615 | struct hci_chan *chan; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2616 | struct sk_buff *skb; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2617 | int quote, cnt, tmp; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2618 | |
| 2619 | BT_DBG("%s", hdev->name); |
| 2620 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2621 | if (!hci_conn_num(hdev, LE_LINK)) |
| 2622 | return; |
| 2623 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2624 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2625 | /* LE tx timeout must be longer than maximum |
| 2626 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2627 | if (!hdev->le_cnt && hdev->le_pkts && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2628 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2629 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2630 | } |
| 2631 | |
| 2632 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2633 | tmp = cnt; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2634 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2635 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2636 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2637 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2638 | skb->len, skb->priority); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2639 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2640 | /* Stop if priority has changed */ |
| 2641 | if (skb->priority < priority) |
| 2642 | break; |
| 2643 | |
| 2644 | skb = skb_dequeue(&chan->data_q); |
| 2645 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2646 | hci_send_frame(skb); |
| 2647 | hdev->le_last_tx = jiffies; |
| 2648 | |
| 2649 | cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2650 | chan->sent++; |
| 2651 | chan->conn->sent++; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2652 | } |
| 2653 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2654 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2655 | if (hdev->le_pkts) |
| 2656 | hdev->le_cnt = cnt; |
| 2657 | else |
| 2658 | hdev->acl_cnt = cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2659 | |
| 2660 | if (cnt != tmp) |
| 2661 | hci_prio_recalculate(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2662 | } |
| 2663 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2664 | static void hci_tx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2665 | { |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2666 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | struct sk_buff *skb; |
| 2668 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2669 | 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] | 2670 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | |
| 2672 | /* Schedule queues and send stuff to HCI driver */ |
| 2673 | |
| 2674 | hci_sched_acl(hdev); |
| 2675 | |
| 2676 | hci_sched_sco(hdev); |
| 2677 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2678 | hci_sched_esco(hdev); |
| 2679 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2680 | hci_sched_le(hdev); |
| 2681 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | /* Send next queued raw (unknown type) packet */ |
| 2683 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 2684 | hci_send_frame(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | } |
| 2686 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2687 | /* ----- HCI RX task (incoming data processing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | |
| 2689 | /* ACL data packet */ |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2690 | 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] | 2691 | { |
| 2692 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 2693 | struct hci_conn *conn; |
| 2694 | __u16 handle, flags; |
| 2695 | |
| 2696 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 2697 | |
| 2698 | handle = __le16_to_cpu(hdr->handle); |
| 2699 | flags = hci_flags(handle); |
| 2700 | handle = hci_handle(handle); |
| 2701 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2702 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2703 | handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | |
| 2705 | hdev->stat.acl_rx++; |
| 2706 | |
| 2707 | hci_dev_lock(hdev); |
| 2708 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2709 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2710 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2711 | if (conn) { |
Mat Martineau | 65983fc | 2011-12-13 15:06:02 -0800 | [diff] [blame] | 2712 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2713 | |
Johan Hedberg | 671267b | 2012-05-12 16:11:50 -0300 | [diff] [blame] | 2714 | hci_dev_lock(hdev); |
| 2715 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && |
| 2716 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) |
| 2717 | mgmt_device_connected(hdev, &conn->dst, conn->type, |
| 2718 | conn->dst_type, 0, NULL, 0, |
| 2719 | conn->dev_class); |
| 2720 | hci_dev_unlock(hdev); |
| 2721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2723 | l2cap_recv_acldata(conn, skb, flags); |
| 2724 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2726 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2727 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | } |
| 2729 | |
| 2730 | kfree_skb(skb); |
| 2731 | } |
| 2732 | |
| 2733 | /* SCO data packet */ |
Gustavo Padovan | 6039aa7 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2734 | 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] | 2735 | { |
| 2736 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 2737 | struct hci_conn *conn; |
| 2738 | __u16 handle; |
| 2739 | |
| 2740 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 2741 | |
| 2742 | handle = __le16_to_cpu(hdr->handle); |
| 2743 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2744 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | |
| 2746 | hdev->stat.sco_rx++; |
| 2747 | |
| 2748 | hci_dev_lock(hdev); |
| 2749 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2750 | hci_dev_unlock(hdev); |
| 2751 | |
| 2752 | if (conn) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2753 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2754 | sco_recv_scodata(conn, skb); |
| 2755 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2756 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2757 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2758 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | } |
| 2760 | |
| 2761 | kfree_skb(skb); |
| 2762 | } |
| 2763 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2764 | static void hci_rx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | { |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2766 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | struct sk_buff *skb; |
| 2768 | |
| 2769 | BT_DBG("%s", hdev->name); |
| 2770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2772 | /* Send copy to monitor */ |
| 2773 | hci_send_to_monitor(hdev, skb); |
| 2774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | if (atomic_read(&hdev->promisc)) { |
| 2776 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2777 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | } |
| 2779 | |
| 2780 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 2781 | kfree_skb(skb); |
| 2782 | continue; |
| 2783 | } |
| 2784 | |
| 2785 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 2786 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2787 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | case HCI_ACLDATA_PKT: |
| 2789 | case HCI_SCODATA_PKT: |
| 2790 | kfree_skb(skb); |
| 2791 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 2792 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | } |
| 2794 | |
| 2795 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2796 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | case HCI_EVENT_PKT: |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2798 | BT_DBG("%s Event packet", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | hci_event_packet(hdev, skb); |
| 2800 | break; |
| 2801 | |
| 2802 | case HCI_ACLDATA_PKT: |
| 2803 | BT_DBG("%s ACL data packet", hdev->name); |
| 2804 | hci_acldata_packet(hdev, skb); |
| 2805 | break; |
| 2806 | |
| 2807 | case HCI_SCODATA_PKT: |
| 2808 | BT_DBG("%s SCO data packet", hdev->name); |
| 2809 | hci_scodata_packet(hdev, skb); |
| 2810 | break; |
| 2811 | |
| 2812 | default: |
| 2813 | kfree_skb(skb); |
| 2814 | break; |
| 2815 | } |
| 2816 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2817 | } |
| 2818 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2819 | static void hci_cmd_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | { |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2821 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | struct sk_buff *skb; |
| 2823 | |
Andrei Emeltchenko | 2104786 | 2012-07-10 15:27:47 +0300 | [diff] [blame] | 2824 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
| 2825 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 2828 | if (atomic_read(&hdev->cmd_cnt)) { |
| 2829 | skb = skb_dequeue(&hdev->cmd_q); |
| 2830 | if (!skb) |
| 2831 | return; |
| 2832 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 2833 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2835 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 2836 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | atomic_dec(&hdev->cmd_cnt); |
| 2838 | hci_send_frame(skb); |
Szymon Janc | 7bdb8a5 | 2011-07-26 22:46:54 +0200 | [diff] [blame] | 2839 | if (test_bit(HCI_RESET, &hdev->flags)) |
| 2840 | del_timer(&hdev->cmd_timer); |
| 2841 | else |
| 2842 | mod_timer(&hdev->cmd_timer, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 2843 | jiffies + HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2844 | } else { |
| 2845 | skb_queue_head(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2846 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2847 | } |
| 2848 | } |
| 2849 | } |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2850 | |
| 2851 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) |
| 2852 | { |
| 2853 | /* General inquiry access code (GIAC) */ |
| 2854 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; |
| 2855 | struct hci_cp_inquiry cp; |
| 2856 | |
| 2857 | BT_DBG("%s", hdev->name); |
| 2858 | |
| 2859 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 2860 | return -EINPROGRESS; |
| 2861 | |
Johan Hedberg | 4663262 | 2012-01-02 16:06:08 +0200 | [diff] [blame] | 2862 | inquiry_cache_flush(hdev); |
| 2863 | |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2864 | memset(&cp, 0, sizeof(cp)); |
| 2865 | memcpy(&cp.lap, lap, sizeof(cp.lap)); |
| 2866 | cp.length = length; |
| 2867 | |
| 2868 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
| 2869 | } |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2870 | |
| 2871 | int hci_cancel_inquiry(struct hci_dev *hdev) |
| 2872 | { |
| 2873 | BT_DBG("%s", hdev->name); |
| 2874 | |
| 2875 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) |
Andre Guedes | 7537e5c | 2012-03-20 00:13:38 -0300 | [diff] [blame] | 2876 | return -EALREADY; |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2877 | |
| 2878 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); |
| 2879 | } |
Andre Guedes | 31f7956 | 2012-04-24 21:02:53 -0300 | [diff] [blame] | 2880 | |
| 2881 | u8 bdaddr_to_le(u8 bdaddr_type) |
| 2882 | { |
| 2883 | switch (bdaddr_type) { |
| 2884 | case BDADDR_LE_PUBLIC: |
| 2885 | return ADDR_LE_DEV_PUBLIC; |
| 2886 | |
| 2887 | default: |
| 2888 | /* Fallback to LE Random address type */ |
| 2889 | return ADDR_LE_DEV_RANDOM; |
| 2890 | } |
| 2891 | } |