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 | a5040ef | 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 | 1036b89 | 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 | 1036b89 | 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 | a5040ef | 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 | 6039aa73 | 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 | e71dfab | 2012-09-06 15:05:46 +0300 | [diff] [blame] | 234 | |
| 235 | /* Read Data Blk size */ |
| 236 | hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) |
| 240 | { |
| 241 | struct sk_buff *skb; |
| 242 | |
| 243 | BT_DBG("%s %ld", hdev->name, opt); |
| 244 | |
| 245 | /* Driver initialization */ |
| 246 | |
| 247 | /* Special commands */ |
| 248 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
| 249 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
| 250 | skb->dev = (void *) hdev; |
| 251 | |
| 252 | skb_queue_tail(&hdev->cmd_q, skb); |
| 253 | queue_work(hdev->workqueue, &hdev->cmd_work); |
| 254 | } |
| 255 | skb_queue_purge(&hdev->driver_init); |
| 256 | |
Andrei Emeltchenko | 1177871 | 2012-06-11 11:13:10 +0300 | [diff] [blame] | 257 | /* Reset */ |
| 258 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) |
| 259 | hci_reset_req(hdev, 0); |
| 260 | |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 261 | switch (hdev->dev_type) { |
| 262 | case HCI_BREDR: |
| 263 | bredr_init(hdev); |
| 264 | break; |
| 265 | |
| 266 | case HCI_AMP: |
| 267 | amp_init(hdev); |
| 268 | break; |
| 269 | |
| 270 | default: |
| 271 | BT_ERR("Unknown device type %d", hdev->dev_type); |
| 272 | break; |
| 273 | } |
Andrei Emeltchenko | e61ef499 | 2011-12-19 16:31:27 +0200 | [diff] [blame] | 274 | } |
| 275 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 276 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
| 277 | { |
| 278 | BT_DBG("%s", hdev->name); |
| 279 | |
| 280 | /* Read LE buffer size */ |
| 281 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
| 282 | } |
| 283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 285 | { |
| 286 | __u8 scan = opt; |
| 287 | |
| 288 | BT_DBG("%s %x", hdev->name, scan); |
| 289 | |
| 290 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 291 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 295 | { |
| 296 | __u8 auth = opt; |
| 297 | |
| 298 | BT_DBG("%s %x", hdev->name, auth); |
| 299 | |
| 300 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 301 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 305 | { |
| 306 | __u8 encrypt = opt; |
| 307 | |
| 308 | BT_DBG("%s %x", hdev->name, encrypt); |
| 309 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 310 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 311 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 314 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 315 | { |
| 316 | __le16 policy = cpu_to_le16(opt); |
| 317 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 318 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 319 | |
| 320 | /* Default link policy */ |
| 321 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 322 | } |
| 323 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 324 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | * Device is held on return. */ |
| 326 | struct hci_dev *hci_dev_get(int index) |
| 327 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 328 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | BT_DBG("%d", index); |
| 331 | |
| 332 | if (index < 0) |
| 333 | return NULL; |
| 334 | |
| 335 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 336 | list_for_each_entry(d, &hci_dev_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | if (d->id == index) { |
| 338 | hdev = hci_dev_hold(d); |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | read_unlock(&hci_dev_list_lock); |
| 343 | return hdev; |
| 344 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | /* ---- Inquiry support ---- */ |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 347 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 348 | bool hci_discovery_active(struct hci_dev *hdev) |
| 349 | { |
| 350 | struct discovery_state *discov = &hdev->discovery; |
| 351 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 352 | switch (discov->state) { |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 353 | case DISCOVERY_FINDING: |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 354 | case DISCOVERY_RESOLVING: |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 355 | return true; |
| 356 | |
Andre Guedes | 6fbe195 | 2012-02-03 17:47:58 -0300 | [diff] [blame] | 357 | default: |
| 358 | return false; |
| 359 | } |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 360 | } |
| 361 | |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 362 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
| 363 | { |
| 364 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
| 365 | |
| 366 | if (hdev->discovery.state == state) |
| 367 | return; |
| 368 | |
| 369 | switch (state) { |
| 370 | case DISCOVERY_STOPPED: |
Andre Guedes | 7b99b65 | 2012-02-13 15:41:02 -0300 | [diff] [blame] | 371 | if (hdev->discovery.state != DISCOVERY_STARTING) |
| 372 | mgmt_discovering(hdev, 0); |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 373 | break; |
| 374 | case DISCOVERY_STARTING: |
| 375 | break; |
Andre Guedes | 343f935 | 2012-02-17 20:39:37 -0300 | [diff] [blame] | 376 | case DISCOVERY_FINDING: |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 377 | mgmt_discovering(hdev, 1); |
| 378 | break; |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 379 | case DISCOVERY_RESOLVING: |
| 380 | break; |
Johan Hedberg | ff9ef57 | 2012-01-04 14:23:45 +0200 | [diff] [blame] | 381 | case DISCOVERY_STOPPING: |
| 382 | break; |
| 383 | } |
| 384 | |
| 385 | hdev->discovery.state = state; |
| 386 | } |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 389 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 390 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 391 | struct inquiry_entry *p, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 393 | list_for_each_entry_safe(p, n, &cache->all, all) { |
| 394 | list_del(&p->all); |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 395 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 397 | |
| 398 | INIT_LIST_HEAD(&cache->unknown); |
| 399 | INIT_LIST_HEAD(&cache->resolve); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | } |
| 401 | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 402 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
| 403 | bdaddr_t *bdaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 405 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | struct inquiry_entry *e; |
| 407 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 408 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 410 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 412 | return e; |
| 413 | } |
| 414 | |
| 415 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
| 417 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 418 | 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] | 419 | bdaddr_t *bdaddr) |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 420 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 421 | struct discovery_state *cache = &hdev->discovery; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 422 | struct inquiry_entry *e; |
| 423 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 424 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 425 | |
| 426 | list_for_each_entry(e, &cache->unknown, list) { |
| 427 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 428 | return e; |
| 429 | } |
| 430 | |
| 431 | return NULL; |
| 432 | } |
| 433 | |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 434 | 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] | 435 | bdaddr_t *bdaddr, |
| 436 | int state) |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 437 | { |
| 438 | struct discovery_state *cache = &hdev->discovery; |
| 439 | struct inquiry_entry *e; |
| 440 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 441 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
Johan Hedberg | 30dc78e | 2012-01-04 15:44:20 +0200 | [diff] [blame] | 442 | |
| 443 | list_for_each_entry(e, &cache->resolve, list) { |
| 444 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) |
| 445 | return e; |
| 446 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 447 | return e; |
| 448 | } |
| 449 | |
| 450 | return NULL; |
| 451 | } |
| 452 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 453 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 454 | struct inquiry_entry *ie) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 455 | { |
| 456 | struct discovery_state *cache = &hdev->discovery; |
| 457 | struct list_head *pos = &cache->resolve; |
| 458 | struct inquiry_entry *p; |
| 459 | |
| 460 | list_del(&ie->list); |
| 461 | |
| 462 | list_for_each_entry(p, &cache->resolve, list) { |
| 463 | if (p->name_state != NAME_PENDING && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 464 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 465 | break; |
| 466 | pos = &p->list; |
| 467 | } |
| 468 | |
| 469 | list_add(&ie->list, pos); |
| 470 | } |
| 471 | |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 472 | 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] | 473 | bool name_known, bool *ssp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 475 | struct discovery_state *cache = &hdev->discovery; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 476 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 478 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 480 | if (ssp) |
| 481 | *ssp = data->ssp_mode; |
| 482 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 483 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 484 | if (ie) { |
Johan Hedberg | 388fc8f | 2012-02-23 00:38:59 +0200 | [diff] [blame] | 485 | if (ie->data.ssp_mode && ssp) |
| 486 | *ssp = true; |
| 487 | |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 488 | if (ie->name_state == NAME_NEEDED && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 489 | data->rssi != ie->data.rssi) { |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 490 | ie->data.rssi = data->rssi; |
| 491 | hci_inquiry_cache_update_resolve(hdev, ie); |
| 492 | } |
| 493 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 494 | goto update; |
Johan Hedberg | a3d4e20 | 2012-01-09 00:53:02 +0200 | [diff] [blame] | 495 | } |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 496 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 497 | /* Entry not in the cache. Add new one. */ |
| 498 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 499 | if (!ie) |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 500 | return false; |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 501 | |
| 502 | list_add(&ie->all, &cache->all); |
| 503 | |
| 504 | if (name_known) { |
| 505 | ie->name_state = NAME_KNOWN; |
| 506 | } else { |
| 507 | ie->name_state = NAME_NOT_KNOWN; |
| 508 | list_add(&ie->list, &cache->unknown); |
| 509 | } |
| 510 | |
| 511 | update: |
| 512 | if (name_known && ie->name_state != NAME_KNOWN && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 513 | ie->name_state != NAME_PENDING) { |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 514 | ie->name_state = NAME_KNOWN; |
| 515 | list_del(&ie->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
| 517 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 518 | memcpy(&ie->data, data, sizeof(*data)); |
| 519 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | cache->timestamp = jiffies; |
Johan Hedberg | 3175405 | 2012-01-04 13:39:52 +0200 | [diff] [blame] | 521 | |
| 522 | if (ie->name_state == NAME_NOT_KNOWN) |
| 523 | return false; |
| 524 | |
| 525 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 529 | { |
Johan Hedberg | 3088351 | 2012-01-04 14:16:21 +0200 | [diff] [blame] | 530 | struct discovery_state *cache = &hdev->discovery; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 532 | struct inquiry_entry *e; |
| 533 | int copied = 0; |
| 534 | |
Johan Hedberg | 561aafb | 2012-01-04 13:31:59 +0200 | [diff] [blame] | 535 | list_for_each_entry(e, &cache->all, all) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | struct inquiry_data *data = &e->data; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 537 | |
| 538 | if (copied >= num) |
| 539 | break; |
| 540 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | bacpy(&info->bdaddr, &data->bdaddr); |
| 542 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 543 | info->pscan_period_mode = data->pscan_period_mode; |
| 544 | info->pscan_mode = data->pscan_mode; |
| 545 | memcpy(info->dev_class, data->dev_class, 3); |
| 546 | info->clock_offset = data->clock_offset; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | info++; |
Johan Hedberg | b57c1a5 | 2012-01-03 16:03:00 +0200 | [diff] [blame] | 549 | copied++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | BT_DBG("cache %p, copied %d", cache, copied); |
| 553 | return copied; |
| 554 | } |
| 555 | |
| 556 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 557 | { |
| 558 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 559 | struct hci_cp_inquiry cp; |
| 560 | |
| 561 | BT_DBG("%s", hdev->name); |
| 562 | |
| 563 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 564 | return; |
| 565 | |
| 566 | /* Start Inquiry */ |
| 567 | memcpy(&cp.lap, &ir->lap, 3); |
| 568 | cp.length = ir->length; |
| 569 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 570 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | } |
| 572 | |
| 573 | int hci_inquiry(void __user *arg) |
| 574 | { |
| 575 | __u8 __user *ptr = arg; |
| 576 | struct hci_inquiry_req ir; |
| 577 | struct hci_dev *hdev; |
| 578 | int err = 0, do_inquiry = 0, max_rsp; |
| 579 | long timeo; |
| 580 | __u8 *buf; |
| 581 | |
| 582 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 583 | return -EFAULT; |
| 584 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 585 | hdev = hci_dev_get(ir.dev_id); |
| 586 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | return -ENODEV; |
| 588 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 589 | hci_dev_lock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 590 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 591 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | inquiry_cache_flush(hdev); |
| 593 | do_inquiry = 1; |
| 594 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 595 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 597 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 598 | |
| 599 | if (do_inquiry) { |
| 600 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 601 | if (err < 0) |
| 602 | goto done; |
| 603 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 605 | /* for unlimited number of responses we will use buffer with |
| 606 | * 255 entries |
| 607 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 609 | |
| 610 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 611 | * copy it to the user space. |
| 612 | */ |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 613 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 614 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | err = -ENOMEM; |
| 616 | goto done; |
| 617 | } |
| 618 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 619 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 621 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
| 623 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 624 | |
| 625 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 626 | ptr += sizeof(ir); |
| 627 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 628 | ir.num_rsp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 630 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | err = -EFAULT; |
| 632 | |
| 633 | kfree(buf); |
| 634 | |
| 635 | done: |
| 636 | hci_dev_put(hdev); |
| 637 | return err; |
| 638 | } |
| 639 | |
| 640 | /* ---- HCI ioctl helpers ---- */ |
| 641 | |
| 642 | int hci_dev_open(__u16 dev) |
| 643 | { |
| 644 | struct hci_dev *hdev; |
| 645 | int ret = 0; |
| 646 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 647 | hdev = hci_dev_get(dev); |
| 648 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | return -ENODEV; |
| 650 | |
| 651 | BT_DBG("%s %p", hdev->name, hdev); |
| 652 | |
| 653 | hci_req_lock(hdev); |
| 654 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 655 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
| 656 | ret = -ENODEV; |
| 657 | goto done; |
| 658 | } |
| 659 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 660 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 661 | ret = -ERFKILL; |
| 662 | goto done; |
| 663 | } |
| 664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 666 | ret = -EALREADY; |
| 667 | goto done; |
| 668 | } |
| 669 | |
| 670 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 671 | set_bit(HCI_RAW, &hdev->flags); |
| 672 | |
Andrei Emeltchenko | 07e3b94 | 2011-11-11 17:02:15 +0200 | [diff] [blame] | 673 | /* Treat all non BR/EDR controllers as raw devices if |
| 674 | enable_hs is not set */ |
| 675 | if (hdev->dev_type != HCI_BREDR && !enable_hs) |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 676 | set_bit(HCI_RAW, &hdev->flags); |
| 677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | if (hdev->open(hdev)) { |
| 679 | ret = -EIO; |
| 680 | goto done; |
| 681 | } |
| 682 | |
| 683 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 684 | atomic_set(&hdev->cmd_cnt, 1); |
| 685 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 686 | hdev->init_last_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 688 | ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
Andre Guedes | eead27d | 2011-06-30 19:20:55 -0300 | [diff] [blame] | 690 | if (lmp_host_le_capable(hdev)) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 691 | ret = __hci_request(hdev, hci_le_init_req, 0, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 692 | HCI_INIT_TIMEOUT); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 693 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | clear_bit(HCI_INIT, &hdev->flags); |
| 695 | } |
| 696 | |
| 697 | if (!ret) { |
| 698 | hci_dev_hold(hdev); |
| 699 | set_bit(HCI_UP, &hdev->flags); |
| 700 | hci_notify(hdev, HCI_DEV_UP); |
Andrei Emeltchenko | bb4b2a9 | 2012-07-19 17:03:40 +0300 | [diff] [blame] | 701 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
| 702 | mgmt_valid_hdev(hdev)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 703 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 704 | mgmt_powered(hdev, 1); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 705 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 706 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 707 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | /* Init failed, cleanup */ |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 709 | flush_work(&hdev->tx_work); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 710 | flush_work(&hdev->cmd_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 711 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
| 713 | skb_queue_purge(&hdev->cmd_q); |
| 714 | skb_queue_purge(&hdev->rx_q); |
| 715 | |
| 716 | if (hdev->flush) |
| 717 | hdev->flush(hdev); |
| 718 | |
| 719 | if (hdev->sent_cmd) { |
| 720 | kfree_skb(hdev->sent_cmd); |
| 721 | hdev->sent_cmd = NULL; |
| 722 | } |
| 723 | |
| 724 | hdev->close(hdev); |
| 725 | hdev->flags = 0; |
| 726 | } |
| 727 | |
| 728 | done: |
| 729 | hci_req_unlock(hdev); |
| 730 | hci_dev_put(hdev); |
| 731 | return ret; |
| 732 | } |
| 733 | |
| 734 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 735 | { |
| 736 | BT_DBG("%s %p", hdev->name, hdev); |
| 737 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 738 | cancel_work_sync(&hdev->le_scan); |
| 739 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | hci_req_cancel(hdev, ENODEV); |
| 741 | hci_req_lock(hdev); |
| 742 | |
| 743 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 744 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | hci_req_unlock(hdev); |
| 746 | return 0; |
| 747 | } |
| 748 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 749 | /* Flush RX and TX works */ |
| 750 | flush_work(&hdev->tx_work); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 751 | flush_work(&hdev->rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 753 | if (hdev->discov_timeout > 0) { |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 754 | cancel_delayed_work(&hdev->discov_off); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 755 | hdev->discov_timeout = 0; |
Johan Hedberg | 5e5282b | 2012-02-21 16:01:30 +0200 | [diff] [blame] | 756 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 757 | } |
| 758 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 759 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
Johan Hedberg | 7d78525 | 2011-12-15 00:47:39 +0200 | [diff] [blame] | 760 | cancel_delayed_work(&hdev->service_cache); |
| 761 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 762 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
| 763 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 764 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | inquiry_cache_flush(hdev); |
| 766 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 767 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | |
| 769 | hci_notify(hdev, HCI_DEV_DOWN); |
| 770 | |
| 771 | if (hdev->flush) |
| 772 | hdev->flush(hdev); |
| 773 | |
| 774 | /* Reset device */ |
| 775 | skb_queue_purge(&hdev->cmd_q); |
| 776 | atomic_set(&hdev->cmd_cnt, 1); |
Johan Hedberg | 8af5946 | 2012-02-03 21:29:40 +0200 | [diff] [blame] | 777 | if (!test_bit(HCI_RAW, &hdev->flags) && |
Szymon Janc | a6c511c | 2012-05-23 12:35:46 +0200 | [diff] [blame] | 778 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | set_bit(HCI_INIT, &hdev->flags); |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 780 | __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | clear_bit(HCI_INIT, &hdev->flags); |
| 782 | } |
| 783 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 784 | /* flush cmd work */ |
| 785 | flush_work(&hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
| 787 | /* Drop queues */ |
| 788 | skb_queue_purge(&hdev->rx_q); |
| 789 | skb_queue_purge(&hdev->cmd_q); |
| 790 | skb_queue_purge(&hdev->raw_q); |
| 791 | |
| 792 | /* Drop last sent command */ |
| 793 | if (hdev->sent_cmd) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 794 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | kfree_skb(hdev->sent_cmd); |
| 796 | hdev->sent_cmd = NULL; |
| 797 | } |
| 798 | |
| 799 | /* After this point our queues are empty |
| 800 | * and no tasks are scheduled. */ |
| 801 | hdev->close(hdev); |
| 802 | |
Andrei Emeltchenko | bb4b2a9 | 2012-07-19 17:03:40 +0300 | [diff] [blame] | 803 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
| 804 | mgmt_valid_hdev(hdev)) { |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 805 | hci_dev_lock(hdev); |
| 806 | mgmt_powered(hdev, 0); |
| 807 | hci_dev_unlock(hdev); |
| 808 | } |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | /* Clear flags */ |
| 811 | hdev->flags = 0; |
| 812 | |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 813 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
Johan Hedberg | 09b3c3f | 2012-02-22 22:01:41 +0200 | [diff] [blame] | 814 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
Johan Hedberg | e59fda8 | 2012-02-22 18:11:53 +0200 | [diff] [blame] | 815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | hci_req_unlock(hdev); |
| 817 | |
| 818 | hci_dev_put(hdev); |
| 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | int hci_dev_close(__u16 dev) |
| 823 | { |
| 824 | struct hci_dev *hdev; |
| 825 | int err; |
| 826 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 827 | hdev = hci_dev_get(dev); |
| 828 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | return -ENODEV; |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 830 | |
| 831 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
| 832 | cancel_delayed_work(&hdev->power_off); |
| 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | err = hci_dev_do_close(hdev); |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | hci_dev_put(hdev); |
| 837 | return err; |
| 838 | } |
| 839 | |
| 840 | int hci_dev_reset(__u16 dev) |
| 841 | { |
| 842 | struct hci_dev *hdev; |
| 843 | int ret = 0; |
| 844 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 845 | hdev = hci_dev_get(dev); |
| 846 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | return -ENODEV; |
| 848 | |
| 849 | hci_req_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
| 851 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 852 | goto done; |
| 853 | |
| 854 | /* Drop queues */ |
| 855 | skb_queue_purge(&hdev->rx_q); |
| 856 | skb_queue_purge(&hdev->cmd_q); |
| 857 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 858 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | inquiry_cache_flush(hdev); |
| 860 | hci_conn_hash_flush(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 861 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
| 863 | if (hdev->flush) |
| 864 | hdev->flush(hdev); |
| 865 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 866 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 867 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
| 869 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 870 | ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
| 872 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | hci_req_unlock(hdev); |
| 874 | hci_dev_put(hdev); |
| 875 | return ret; |
| 876 | } |
| 877 | |
| 878 | int hci_dev_reset_stat(__u16 dev) |
| 879 | { |
| 880 | struct hci_dev *hdev; |
| 881 | int ret = 0; |
| 882 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 883 | hdev = hci_dev_get(dev); |
| 884 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | return -ENODEV; |
| 886 | |
| 887 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 888 | |
| 889 | hci_dev_put(hdev); |
| 890 | |
| 891 | return ret; |
| 892 | } |
| 893 | |
| 894 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 895 | { |
| 896 | struct hci_dev *hdev; |
| 897 | struct hci_dev_req dr; |
| 898 | int err = 0; |
| 899 | |
| 900 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 901 | return -EFAULT; |
| 902 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 903 | hdev = hci_dev_get(dr.dev_id); |
| 904 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | return -ENODEV; |
| 906 | |
| 907 | switch (cmd) { |
| 908 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 909 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 910 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | break; |
| 912 | |
| 913 | case HCISETENCRYPT: |
| 914 | if (!lmp_encrypt_capable(hdev)) { |
| 915 | err = -EOPNOTSUPP; |
| 916 | break; |
| 917 | } |
| 918 | |
| 919 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 920 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 921 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 922 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | if (err) |
| 924 | break; |
| 925 | } |
| 926 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 927 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 928 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | break; |
| 930 | |
| 931 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 932 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 933 | HCI_INIT_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | break; |
| 935 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 936 | case HCISETLINKPOL: |
| 937 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 938 | HCI_INIT_TIMEOUT); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 939 | break; |
| 940 | |
| 941 | case HCISETLINKMODE: |
| 942 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 943 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 944 | break; |
| 945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | case HCISETPTYPE: |
| 947 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 948 | break; |
| 949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 951 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 952 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | break; |
| 954 | |
| 955 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 956 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 957 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | break; |
| 959 | |
| 960 | default: |
| 961 | err = -EINVAL; |
| 962 | break; |
| 963 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 964 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | hci_dev_put(hdev); |
| 966 | return err; |
| 967 | } |
| 968 | |
| 969 | int hci_get_dev_list(void __user *arg) |
| 970 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 971 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | struct hci_dev_list_req *dl; |
| 973 | struct hci_dev_req *dr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | int n = 0, size, err; |
| 975 | __u16 dev_num; |
| 976 | |
| 977 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 978 | return -EFAULT; |
| 979 | |
| 980 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 981 | return -EINVAL; |
| 982 | |
| 983 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 984 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 985 | dl = kzalloc(size, GFP_KERNEL); |
| 986 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | return -ENOMEM; |
| 988 | |
| 989 | dr = dl->dev_req; |
| 990 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 991 | read_lock(&hci_dev_list_lock); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 992 | list_for_each_entry(hdev, &hci_dev_list, list) { |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 993 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | e0f9309 | 2011-11-09 01:44:22 +0200 | [diff] [blame] | 994 | cancel_delayed_work(&hdev->power_off); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 995 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 996 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 997 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 998 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | (dr + n)->dev_id = hdev->id; |
| 1000 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1001 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | if (++n >= dev_num) |
| 1003 | break; |
| 1004 | } |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1005 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
| 1007 | dl->dev_num = n; |
| 1008 | size = sizeof(*dl) + n * sizeof(*dr); |
| 1009 | |
| 1010 | err = copy_to_user(arg, dl, size); |
| 1011 | kfree(dl); |
| 1012 | |
| 1013 | return err ? -EFAULT : 0; |
| 1014 | } |
| 1015 | |
| 1016 | int hci_get_dev_info(void __user *arg) |
| 1017 | { |
| 1018 | struct hci_dev *hdev; |
| 1019 | struct hci_dev_info di; |
| 1020 | int err = 0; |
| 1021 | |
| 1022 | if (copy_from_user(&di, arg, sizeof(di))) |
| 1023 | return -EFAULT; |
| 1024 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1025 | hdev = hci_dev_get(di.dev_id); |
| 1026 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | return -ENODEV; |
| 1028 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1029 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1030 | cancel_delayed_work_sync(&hdev->power_off); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1031 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1032 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
| 1033 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | strcpy(di.name, hdev->name); |
| 1036 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 1037 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | di.flags = hdev->flags; |
| 1039 | di.pkt_type = hdev->pkt_type; |
| 1040 | di.acl_mtu = hdev->acl_mtu; |
| 1041 | di.acl_pkts = hdev->acl_pkts; |
| 1042 | di.sco_mtu = hdev->sco_mtu; |
| 1043 | di.sco_pkts = hdev->sco_pkts; |
| 1044 | di.link_policy = hdev->link_policy; |
| 1045 | di.link_mode = hdev->link_mode; |
| 1046 | |
| 1047 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 1048 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 1049 | |
| 1050 | if (copy_to_user(arg, &di, sizeof(di))) |
| 1051 | err = -EFAULT; |
| 1052 | |
| 1053 | hci_dev_put(hdev); |
| 1054 | |
| 1055 | return err; |
| 1056 | } |
| 1057 | |
| 1058 | /* ---- Interface to HCI drivers ---- */ |
| 1059 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1060 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 1061 | { |
| 1062 | struct hci_dev *hdev = data; |
| 1063 | |
| 1064 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 1065 | |
| 1066 | if (!blocked) |
| 1067 | return 0; |
| 1068 | |
| 1069 | hci_dev_do_close(hdev); |
| 1070 | |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | static const struct rfkill_ops hci_rfkill_ops = { |
| 1075 | .set_block = hci_rfkill_set_block, |
| 1076 | }; |
| 1077 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1078 | static void hci_power_on(struct work_struct *work) |
| 1079 | { |
| 1080 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
| 1081 | |
| 1082 | BT_DBG("%s", hdev->name); |
| 1083 | |
| 1084 | if (hci_dev_open(hdev->id) < 0) |
| 1085 | return; |
| 1086 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1087 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
Andrei Emeltchenko | 9345d40 | 2012-06-15 10:36:42 +0300 | [diff] [blame] | 1088 | schedule_delayed_work(&hdev->power_off, HCI_AUTO_OFF_TIMEOUT); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1089 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1090 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1091 | mgmt_index_added(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | static void hci_power_off(struct work_struct *work) |
| 1095 | { |
Johan Hedberg | 3243553 | 2011-11-07 22:16:04 +0200 | [diff] [blame] | 1096 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1097 | power_off.work); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1098 | |
| 1099 | BT_DBG("%s", hdev->name); |
| 1100 | |
Marcel Holtmann | 8ee5654 | 2012-02-21 12:33:48 +0100 | [diff] [blame] | 1101 | hci_dev_do_close(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1102 | } |
| 1103 | |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1104 | static void hci_discov_off(struct work_struct *work) |
| 1105 | { |
| 1106 | struct hci_dev *hdev; |
| 1107 | u8 scan = SCAN_PAGE; |
| 1108 | |
| 1109 | hdev = container_of(work, struct hci_dev, discov_off.work); |
| 1110 | |
| 1111 | BT_DBG("%s", hdev->name); |
| 1112 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1113 | hci_dev_lock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1114 | |
| 1115 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); |
| 1116 | |
| 1117 | hdev->discov_timeout = 0; |
| 1118 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1119 | hci_dev_unlock(hdev); |
Johan Hedberg | 16ab91a | 2011-11-07 22:16:02 +0200 | [diff] [blame] | 1120 | } |
| 1121 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1122 | int hci_uuids_clear(struct hci_dev *hdev) |
| 1123 | { |
| 1124 | struct list_head *p, *n; |
| 1125 | |
| 1126 | list_for_each_safe(p, n, &hdev->uuids) { |
| 1127 | struct bt_uuid *uuid; |
| 1128 | |
| 1129 | uuid = list_entry(p, struct bt_uuid, list); |
| 1130 | |
| 1131 | list_del(p); |
| 1132 | kfree(uuid); |
| 1133 | } |
| 1134 | |
| 1135 | return 0; |
| 1136 | } |
| 1137 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1138 | int hci_link_keys_clear(struct hci_dev *hdev) |
| 1139 | { |
| 1140 | struct list_head *p, *n; |
| 1141 | |
| 1142 | list_for_each_safe(p, n, &hdev->link_keys) { |
| 1143 | struct link_key *key; |
| 1144 | |
| 1145 | key = list_entry(p, struct link_key, list); |
| 1146 | |
| 1147 | list_del(p); |
| 1148 | kfree(key); |
| 1149 | } |
| 1150 | |
| 1151 | return 0; |
| 1152 | } |
| 1153 | |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1154 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
| 1155 | { |
| 1156 | struct smp_ltk *k, *tmp; |
| 1157 | |
| 1158 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1159 | list_del(&k->list); |
| 1160 | kfree(k); |
| 1161 | } |
| 1162 | |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1166 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1167 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1168 | struct link_key *k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1169 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1170 | list_for_each_entry(k, &hdev->link_keys, list) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1171 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
| 1172 | return k; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1173 | |
| 1174 | return NULL; |
| 1175 | } |
| 1176 | |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1177 | 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] | 1178 | u8 key_type, u8 old_key_type) |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1179 | { |
| 1180 | /* Legacy key */ |
| 1181 | if (key_type < 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1182 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1183 | |
| 1184 | /* Debug keys are insecure so don't store them persistently */ |
| 1185 | if (key_type == HCI_LK_DEBUG_COMBINATION) |
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 | /* Changed combination key and there's no previous one */ |
| 1189 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1190 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1191 | |
| 1192 | /* Security mode 3 case */ |
| 1193 | if (!conn) |
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 | /* Neither local nor remote side had no-bonding as requirement */ |
| 1197 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) |
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 | /* Local side had dedicated bonding as requirement */ |
| 1201 | if (conn->auth_type == 0x02 || conn->auth_type == 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 | /* Remote side had dedicated bonding as requirement */ |
| 1205 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1206 | return true; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1207 | |
| 1208 | /* If none of the above criteria match, then don't store the key |
| 1209 | * persistently */ |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1210 | return false; |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1211 | } |
| 1212 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1213 | 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] | 1214 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1215 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1216 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1217 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
| 1218 | if (k->ediv != ediv || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1219 | memcmp(rand, k->rand, sizeof(k->rand))) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1220 | continue; |
| 1221 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1222 | return k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | return NULL; |
| 1226 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1227 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1228 | 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] | 1229 | u8 addr_type) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1230 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1231 | struct smp_ltk *k; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1232 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1233 | list_for_each_entry(k, &hdev->long_term_keys, list) |
| 1234 | if (addr_type == k->bdaddr_type && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1235 | bacmp(bdaddr, &k->bdaddr) == 0) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1236 | return k; |
| 1237 | |
| 1238 | return NULL; |
| 1239 | } |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1240 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1241 | 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] | 1242 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1243 | { |
| 1244 | struct link_key *key, *old_key; |
Vishal Agarwal | 745c0ce | 2012-04-13 17:43:22 +0530 | [diff] [blame] | 1245 | u8 old_key_type; |
| 1246 | bool persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1247 | |
| 1248 | old_key = hci_find_link_key(hdev, bdaddr); |
| 1249 | if (old_key) { |
| 1250 | old_key_type = old_key->type; |
| 1251 | key = old_key; |
| 1252 | } else { |
Johan Hedberg | 12adcf3 | 2011-04-28 11:29:00 -0700 | [diff] [blame] | 1253 | old_key_type = conn ? conn->key_type : 0xff; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1254 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
| 1255 | if (!key) |
| 1256 | return -ENOMEM; |
| 1257 | list_add(&key->list, &hdev->link_keys); |
| 1258 | } |
| 1259 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1260 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1261 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1262 | /* Some buggy controller combinations generate a changed |
| 1263 | * combination key for legacy pairing even when there's no |
| 1264 | * previous key */ |
| 1265 | if (type == HCI_LK_CHANGED_COMBINATION && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1266 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1267 | type = HCI_LK_COMBINATION; |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 1268 | if (conn) |
| 1269 | conn->key_type = type; |
| 1270 | } |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1271 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1272 | bacpy(&key->bdaddr, bdaddr); |
Andrei Emeltchenko | 9b3b446 | 2012-05-23 11:31:20 +0300 | [diff] [blame] | 1273 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1274 | key->pin_len = pin_len; |
| 1275 | |
Waldemar Rymarkiewicz | b6020ba | 2011-04-28 12:07:53 +0200 | [diff] [blame] | 1276 | if (type == HCI_LK_CHANGED_COMBINATION) |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1277 | key->type = old_key_type; |
Johan Hedberg | 4748fed | 2011-04-28 11:29:02 -0700 | [diff] [blame] | 1278 | else |
| 1279 | key->type = type; |
| 1280 | |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1281 | if (!new_key) |
| 1282 | return 0; |
| 1283 | |
| 1284 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); |
| 1285 | |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1286 | mgmt_new_link_key(hdev, key, persistent); |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1287 | |
Vishal Agarwal | 6ec5bca | 2012-04-16 14:44:44 +0530 | [diff] [blame] | 1288 | if (conn) |
| 1289 | conn->flush_key = !persistent; |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1290 | |
| 1291 | return 0; |
| 1292 | } |
| 1293 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1294 | 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] | 1295 | 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] | 1296 | ediv, u8 rand[8]) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1297 | { |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1298 | struct smp_ltk *key, *old_key; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1299 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1300 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
| 1301 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1302 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1303 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
| 1304 | if (old_key) |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1305 | key = old_key; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1306 | else { |
| 1307 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1308 | if (!key) |
| 1309 | return -ENOMEM; |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1310 | list_add(&key->list, &hdev->long_term_keys); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1311 | } |
| 1312 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1313 | bacpy(&key->bdaddr, bdaddr); |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1314 | key->bdaddr_type = addr_type; |
| 1315 | memcpy(key->val, tk, sizeof(key->val)); |
| 1316 | key->authenticated = authenticated; |
| 1317 | key->ediv = ediv; |
| 1318 | key->enc_size = enc_size; |
| 1319 | key->type = type; |
| 1320 | memcpy(key->rand, rand, sizeof(key->rand)); |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1321 | |
Vinicius Costa Gomes | c9839a1 | 2012-02-02 21:08:01 -0300 | [diff] [blame] | 1322 | if (!new_key) |
| 1323 | return 0; |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1324 | |
Vinicius Costa Gomes | 261cc5a | 2012-02-02 21:08:05 -0300 | [diff] [blame] | 1325 | if (type & HCI_SMP_LTK) |
| 1326 | mgmt_new_ltk(hdev, key, 1); |
| 1327 | |
Vinicius Costa Gomes | 75d262c | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1328 | return 0; |
| 1329 | } |
| 1330 | |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1331 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1332 | { |
| 1333 | struct link_key *key; |
| 1334 | |
| 1335 | key = hci_find_link_key(hdev, bdaddr); |
| 1336 | if (!key) |
| 1337 | return -ENOENT; |
| 1338 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1339 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1340 | |
| 1341 | list_del(&key->list); |
| 1342 | kfree(key); |
| 1343 | |
| 1344 | return 0; |
| 1345 | } |
| 1346 | |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1347 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1348 | { |
| 1349 | struct smp_ltk *k, *tmp; |
| 1350 | |
| 1351 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { |
| 1352 | if (bacmp(bdaddr, &k->bdaddr)) |
| 1353 | continue; |
| 1354 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1355 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1356 | |
| 1357 | list_del(&k->list); |
| 1358 | kfree(k); |
| 1359 | } |
| 1360 | |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1364 | /* HCI command timer function */ |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1365 | static void hci_cmd_timeout(unsigned long arg) |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1366 | { |
| 1367 | struct hci_dev *hdev = (void *) arg; |
| 1368 | |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1369 | if (hdev->sent_cmd) { |
| 1370 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; |
| 1371 | u16 opcode = __le16_to_cpu(sent->opcode); |
| 1372 | |
| 1373 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); |
| 1374 | } else { |
| 1375 | BT_ERR("%s command tx timeout", hdev->name); |
| 1376 | } |
| 1377 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1378 | atomic_set(&hdev->cmd_cnt, 1); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 1379 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1380 | } |
| 1381 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1382 | 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] | 1383 | bdaddr_t *bdaddr) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1384 | { |
| 1385 | struct oob_data *data; |
| 1386 | |
| 1387 | list_for_each_entry(data, &hdev->remote_oob_data, list) |
| 1388 | if (bacmp(bdaddr, &data->bdaddr) == 0) |
| 1389 | return data; |
| 1390 | |
| 1391 | return NULL; |
| 1392 | } |
| 1393 | |
| 1394 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1395 | { |
| 1396 | struct oob_data *data; |
| 1397 | |
| 1398 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1399 | if (!data) |
| 1400 | return -ENOENT; |
| 1401 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1402 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1403 | |
| 1404 | list_del(&data->list); |
| 1405 | kfree(data); |
| 1406 | |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
| 1410 | int hci_remote_oob_data_clear(struct hci_dev *hdev) |
| 1411 | { |
| 1412 | struct oob_data *data, *n; |
| 1413 | |
| 1414 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 1415 | list_del(&data->list); |
| 1416 | kfree(data); |
| 1417 | } |
| 1418 | |
| 1419 | return 0; |
| 1420 | } |
| 1421 | |
| 1422 | 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] | 1423 | u8 *randomizer) |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1424 | { |
| 1425 | struct oob_data *data; |
| 1426 | |
| 1427 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1428 | |
| 1429 | if (!data) { |
| 1430 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
| 1431 | if (!data) |
| 1432 | return -ENOMEM; |
| 1433 | |
| 1434 | bacpy(&data->bdaddr, bdaddr); |
| 1435 | list_add(&data->list, &hdev->remote_oob_data); |
| 1436 | } |
| 1437 | |
| 1438 | memcpy(data->hash, hash, sizeof(data->hash)); |
| 1439 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); |
| 1440 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 1441 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1442 | |
| 1443 | return 0; |
| 1444 | } |
| 1445 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1446 | 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] | 1447 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1448 | struct bdaddr_list *b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1449 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1450 | list_for_each_entry(b, &hdev->blacklist, list) |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1451 | if (bacmp(bdaddr, &b->bdaddr) == 0) |
| 1452 | return b; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1453 | |
| 1454 | return NULL; |
| 1455 | } |
| 1456 | |
| 1457 | int hci_blacklist_clear(struct hci_dev *hdev) |
| 1458 | { |
| 1459 | struct list_head *p, *n; |
| 1460 | |
| 1461 | list_for_each_safe(p, n, &hdev->blacklist) { |
| 1462 | struct bdaddr_list *b; |
| 1463 | |
| 1464 | b = list_entry(p, struct bdaddr_list, list); |
| 1465 | |
| 1466 | list_del(p); |
| 1467 | kfree(b); |
| 1468 | } |
| 1469 | |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1473 | 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] | 1474 | { |
| 1475 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1476 | |
| 1477 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
| 1478 | return -EBADF; |
| 1479 | |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1480 | if (hci_blacklist_lookup(hdev, bdaddr)) |
| 1481 | return -EEXIST; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1482 | |
| 1483 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1484 | if (!entry) |
| 1485 | return -ENOMEM; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1486 | |
| 1487 | bacpy(&entry->bdaddr, bdaddr); |
| 1488 | |
| 1489 | list_add(&entry->list, &hdev->blacklist); |
| 1490 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1491 | return mgmt_device_blocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1492 | } |
| 1493 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1494 | 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] | 1495 | { |
| 1496 | struct bdaddr_list *entry; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1497 | |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1498 | if (bacmp(bdaddr, BDADDR_ANY) == 0) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1499 | return hci_blacklist_clear(hdev); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1500 | |
| 1501 | entry = hci_blacklist_lookup(hdev, bdaddr); |
Szymon Janc | 1ec918c | 2011-11-16 09:32:21 +0100 | [diff] [blame] | 1502 | if (!entry) |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 1503 | return -ENOENT; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1504 | |
| 1505 | list_del(&entry->list); |
| 1506 | kfree(entry); |
| 1507 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 1508 | return mgmt_device_unblocked(hdev, bdaddr, type); |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 1509 | } |
| 1510 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1511 | static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) |
| 1512 | { |
| 1513 | struct le_scan_params *param = (struct le_scan_params *) opt; |
| 1514 | struct hci_cp_le_set_scan_param cp; |
| 1515 | |
| 1516 | memset(&cp, 0, sizeof(cp)); |
| 1517 | cp.type = param->type; |
| 1518 | cp.interval = cpu_to_le16(param->interval); |
| 1519 | cp.window = cpu_to_le16(param->window); |
| 1520 | |
| 1521 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); |
| 1522 | } |
| 1523 | |
| 1524 | static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) |
| 1525 | { |
| 1526 | struct hci_cp_le_set_scan_enable cp; |
| 1527 | |
| 1528 | memset(&cp, 0, sizeof(cp)); |
| 1529 | cp.enable = 1; |
Andre Guedes | 0431a43 | 2012-05-31 20:01:41 -0300 | [diff] [blame] | 1530 | cp.filter_dup = 1; |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1531 | |
| 1532 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1533 | } |
| 1534 | |
| 1535 | 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] | 1536 | u16 window, int timeout) |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1537 | { |
| 1538 | long timeo = msecs_to_jiffies(3000); |
| 1539 | struct le_scan_params param; |
| 1540 | int err; |
| 1541 | |
| 1542 | BT_DBG("%s", hdev->name); |
| 1543 | |
| 1544 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1545 | return -EINPROGRESS; |
| 1546 | |
| 1547 | param.type = type; |
| 1548 | param.interval = interval; |
| 1549 | param.window = window; |
| 1550 | |
| 1551 | hci_req_lock(hdev); |
| 1552 | |
| 1553 | err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1554 | timeo); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1555 | if (!err) |
| 1556 | err = __hci_request(hdev, le_scan_enable_req, 0, timeo); |
| 1557 | |
| 1558 | hci_req_unlock(hdev); |
| 1559 | |
| 1560 | if (err < 0) |
| 1561 | return err; |
| 1562 | |
| 1563 | schedule_delayed_work(&hdev->le_scan_disable, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1564 | msecs_to_jiffies(timeout)); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1565 | |
| 1566 | return 0; |
| 1567 | } |
| 1568 | |
Andre Guedes | 7dbfac1 | 2012-03-15 16:52:07 -0300 | [diff] [blame] | 1569 | int hci_cancel_le_scan(struct hci_dev *hdev) |
| 1570 | { |
| 1571 | BT_DBG("%s", hdev->name); |
| 1572 | |
| 1573 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) |
| 1574 | return -EALREADY; |
| 1575 | |
| 1576 | if (cancel_delayed_work(&hdev->le_scan_disable)) { |
| 1577 | struct hci_cp_le_set_scan_enable cp; |
| 1578 | |
| 1579 | /* Send HCI command to disable LE Scan */ |
| 1580 | memset(&cp, 0, sizeof(cp)); |
| 1581 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1582 | } |
| 1583 | |
| 1584 | return 0; |
| 1585 | } |
| 1586 | |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1587 | static void le_scan_disable_work(struct work_struct *work) |
| 1588 | { |
| 1589 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1590 | le_scan_disable.work); |
Andre Guedes | 7ba8b4b | 2012-02-03 17:47:59 -0300 | [diff] [blame] | 1591 | struct hci_cp_le_set_scan_enable cp; |
| 1592 | |
| 1593 | BT_DBG("%s", hdev->name); |
| 1594 | |
| 1595 | memset(&cp, 0, sizeof(cp)); |
| 1596 | |
| 1597 | hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); |
| 1598 | } |
| 1599 | |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1600 | static void le_scan_work(struct work_struct *work) |
| 1601 | { |
| 1602 | struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); |
| 1603 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1604 | |
| 1605 | BT_DBG("%s", hdev->name); |
| 1606 | |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 1607 | hci_do_le_scan(hdev, param->type, param->interval, param->window, |
| 1608 | param->timeout); |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | 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] | 1612 | int timeout) |
Andre Guedes | 28b75a8 | 2012-02-03 17:48:00 -0300 | [diff] [blame] | 1613 | { |
| 1614 | struct le_scan_params *param = &hdev->le_scan_params; |
| 1615 | |
| 1616 | BT_DBG("%s", hdev->name); |
| 1617 | |
| 1618 | if (work_busy(&hdev->le_scan)) |
| 1619 | return -EINPROGRESS; |
| 1620 | |
| 1621 | param->type = type; |
| 1622 | param->interval = interval; |
| 1623 | param->window = window; |
| 1624 | param->timeout = timeout; |
| 1625 | |
| 1626 | queue_work(system_long_wq, &hdev->le_scan); |
| 1627 | |
| 1628 | return 0; |
| 1629 | } |
| 1630 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1631 | /* Alloc HCI device */ |
| 1632 | struct hci_dev *hci_alloc_dev(void) |
| 1633 | { |
| 1634 | struct hci_dev *hdev; |
| 1635 | |
| 1636 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
| 1637 | if (!hdev) |
| 1638 | return NULL; |
| 1639 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1640 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
| 1641 | hdev->esco_type = (ESCO_HV1); |
| 1642 | hdev->link_mode = (HCI_LM_ACCEPT); |
| 1643 | hdev->io_capability = 0x03; /* No Input No Output */ |
| 1644 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1645 | hdev->sniff_max_interval = 800; |
| 1646 | hdev->sniff_min_interval = 80; |
| 1647 | |
| 1648 | mutex_init(&hdev->lock); |
| 1649 | mutex_init(&hdev->req_lock); |
| 1650 | |
| 1651 | INIT_LIST_HEAD(&hdev->mgmt_pending); |
| 1652 | INIT_LIST_HEAD(&hdev->blacklist); |
| 1653 | INIT_LIST_HEAD(&hdev->uuids); |
| 1654 | INIT_LIST_HEAD(&hdev->link_keys); |
| 1655 | INIT_LIST_HEAD(&hdev->long_term_keys); |
| 1656 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
Andrei Emeltchenko | 6b536b5 | 2012-08-31 16:39:28 +0300 | [diff] [blame] | 1657 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1658 | |
| 1659 | INIT_WORK(&hdev->rx_work, hci_rx_work); |
| 1660 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); |
| 1661 | INIT_WORK(&hdev->tx_work, hci_tx_work); |
| 1662 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1663 | INIT_WORK(&hdev->le_scan, le_scan_work); |
| 1664 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1665 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
| 1666 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |
| 1667 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); |
| 1668 | |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1669 | skb_queue_head_init(&hdev->driver_init); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1670 | skb_queue_head_init(&hdev->rx_q); |
| 1671 | skb_queue_head_init(&hdev->cmd_q); |
| 1672 | skb_queue_head_init(&hdev->raw_q); |
| 1673 | |
| 1674 | init_waitqueue_head(&hdev->req_wait_q); |
| 1675 | |
Andrei Emeltchenko | bda4f23 | 2012-06-11 11:13:08 +0300 | [diff] [blame] | 1676 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1677 | |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1678 | hci_init_sysfs(hdev); |
| 1679 | discovery_init(hdev); |
David Herrmann | 9be0dab | 2012-04-22 14:39:57 +0200 | [diff] [blame] | 1680 | |
| 1681 | return hdev; |
| 1682 | } |
| 1683 | EXPORT_SYMBOL(hci_alloc_dev); |
| 1684 | |
| 1685 | /* Free HCI device */ |
| 1686 | void hci_free_dev(struct hci_dev *hdev) |
| 1687 | { |
| 1688 | skb_queue_purge(&hdev->driver_init); |
| 1689 | |
| 1690 | /* will free via device release */ |
| 1691 | put_device(&hdev->dev); |
| 1692 | } |
| 1693 | EXPORT_SYMBOL(hci_free_dev); |
| 1694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | /* Register HCI device */ |
| 1696 | int hci_register_dev(struct hci_dev *hdev) |
| 1697 | { |
David Herrmann | b1b813d | 2012-04-22 14:39:58 +0200 | [diff] [blame] | 1698 | int id, error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | |
David Herrmann | 010666a | 2012-01-07 15:47:07 +0100 | [diff] [blame] | 1700 | if (!hdev->open || !hdev->close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | return -EINVAL; |
| 1702 | |
Mat Martineau | 08add51 | 2011-11-02 16:18:36 -0700 | [diff] [blame] | 1703 | /* Do not allow HCI_AMP devices to register at index 0, |
| 1704 | * so the index can be used as the AMP controller ID. |
| 1705 | */ |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1706 | switch (hdev->dev_type) { |
| 1707 | case HCI_BREDR: |
| 1708 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); |
| 1709 | break; |
| 1710 | case HCI_AMP: |
| 1711 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); |
| 1712 | break; |
| 1713 | default: |
| 1714 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1716 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1717 | if (id < 0) |
| 1718 | return id; |
| 1719 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | sprintf(hdev->name, "hci%d", id); |
| 1721 | hdev->id = id; |
Andrei Emeltchenko | 2d8b3a1 | 2012-04-16 16:32:04 +0300 | [diff] [blame] | 1722 | |
| 1723 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
| 1724 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1725 | write_lock(&hci_dev_list_lock); |
| 1726 | list_add(&hdev->list, &hci_dev_list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1727 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | |
Gustavo F. Padovan | 32845eb | 2011-12-17 17:47:30 -0200 | [diff] [blame] | 1729 | hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1730 | WQ_MEM_RECLAIM, 1); |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1731 | if (!hdev->workqueue) { |
| 1732 | error = -ENOMEM; |
| 1733 | goto err; |
| 1734 | } |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1735 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1736 | error = hci_add_sysfs(hdev); |
| 1737 | if (error < 0) |
| 1738 | goto err_wqueue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1740 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1741 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
| 1742 | hdev); |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1743 | if (hdev->rfkill) { |
| 1744 | if (rfkill_register(hdev->rfkill) < 0) { |
| 1745 | rfkill_destroy(hdev->rfkill); |
| 1746 | hdev->rfkill = NULL; |
| 1747 | } |
| 1748 | } |
| 1749 | |
Johan Hedberg | a8b2d5c | 2012-01-08 23:11:15 +0200 | [diff] [blame] | 1750 | set_bit(HCI_SETUP, &hdev->dev_flags); |
Andrei Emeltchenko | ce2be9a | 2012-06-29 15:07:00 +0300 | [diff] [blame] | 1751 | |
| 1752 | if (hdev->dev_type != HCI_AMP) |
| 1753 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
| 1754 | |
Gustavo F. Padovan | 7f97104 | 2011-12-18 12:40:32 -0200 | [diff] [blame] | 1755 | schedule_work(&hdev->power_on); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | hci_notify(hdev, HCI_DEV_REG); |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1758 | hci_dev_hold(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | |
| 1760 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1761 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1762 | err_wqueue: |
| 1763 | destroy_workqueue(hdev->workqueue); |
| 1764 | err: |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1765 | ida_simple_remove(&hci_index_ida, hdev->id); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1766 | write_lock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1767 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1768 | write_unlock(&hci_dev_list_lock); |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1769 | |
David Herrmann | 33ca954 | 2011-10-08 14:58:49 +0200 | [diff] [blame] | 1770 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | } |
| 1772 | EXPORT_SYMBOL(hci_register_dev); |
| 1773 | |
| 1774 | /* Unregister HCI device */ |
David Herrmann | 5973563 | 2011-10-26 10:43:19 +0200 | [diff] [blame] | 1775 | void hci_unregister_dev(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | { |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1777 | int i, id; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1778 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1779 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | |
Johan Hovold | 9432496 | 2012-03-15 14:48:41 +0100 | [diff] [blame] | 1781 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
| 1782 | |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1783 | id = hdev->id; |
| 1784 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1785 | write_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | list_del(&hdev->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 1787 | write_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | |
| 1789 | hci_dev_do_close(hdev); |
| 1790 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1791 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1792 | kfree_skb(hdev->reassembly[i]); |
| 1793 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1794 | if (!test_bit(HCI_INIT, &hdev->flags) && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1795 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1796 | hci_dev_lock(hdev); |
Johan Hedberg | 744cf19 | 2011-11-08 20:40:14 +0200 | [diff] [blame] | 1797 | mgmt_index_removed(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1798 | hci_dev_unlock(hdev); |
Johan Hedberg | 56e5cb8 | 2011-11-08 20:40:16 +0200 | [diff] [blame] | 1799 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1800 | |
Johan Hedberg | 2e58ef3 | 2011-11-08 20:40:15 +0200 | [diff] [blame] | 1801 | /* mgmt_index_removed should take care of emptying the |
| 1802 | * pending list */ |
| 1803 | BUG_ON(!list_empty(&hdev->mgmt_pending)); |
| 1804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1806 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1807 | if (hdev->rfkill) { |
| 1808 | rfkill_unregister(hdev->rfkill); |
| 1809 | rfkill_destroy(hdev->rfkill); |
| 1810 | } |
| 1811 | |
David Herrmann | ce24297 | 2011-10-08 14:58:48 +0200 | [diff] [blame] | 1812 | hci_del_sysfs(hdev); |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1813 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1814 | destroy_workqueue(hdev->workqueue); |
| 1815 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1816 | hci_dev_lock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1817 | hci_blacklist_clear(hdev); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1818 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca1 | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1819 | hci_link_keys_clear(hdev); |
Vinicius Costa Gomes | b899efa | 2012-02-02 21:08:00 -0300 | [diff] [blame] | 1820 | hci_smp_ltks_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1821 | hci_remote_oob_data_clear(hdev); |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1822 | hci_dev_unlock(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1823 | |
David Herrmann | dc946bd | 2012-01-07 15:47:24 +0100 | [diff] [blame] | 1824 | hci_dev_put(hdev); |
Sasha Levin | 3df92b3 | 2012-05-27 22:36:56 +0200 | [diff] [blame] | 1825 | |
| 1826 | ida_simple_remove(&hci_index_ida, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | } |
| 1828 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1829 | |
| 1830 | /* Suspend HCI device */ |
| 1831 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1832 | { |
| 1833 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1834 | return 0; |
| 1835 | } |
| 1836 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1837 | |
| 1838 | /* Resume HCI device */ |
| 1839 | int hci_resume_dev(struct hci_dev *hdev) |
| 1840 | { |
| 1841 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1842 | return 0; |
| 1843 | } |
| 1844 | EXPORT_SYMBOL(hci_resume_dev); |
| 1845 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1846 | /* Receive frame from HCI drivers */ |
| 1847 | int hci_recv_frame(struct sk_buff *skb) |
| 1848 | { |
| 1849 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1850 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1851 | && !test_bit(HCI_INIT, &hdev->flags))) { |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1852 | kfree_skb(skb); |
| 1853 | return -ENXIO; |
| 1854 | } |
| 1855 | |
| 1856 | /* Incomming skb */ |
| 1857 | bt_cb(skb)->incoming = 1; |
| 1858 | |
| 1859 | /* Time stamp */ |
| 1860 | __net_timestamp(skb); |
| 1861 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1862 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 1863 | queue_work(hdev->workqueue, &hdev->rx_work); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1864 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1865 | return 0; |
| 1866 | } |
| 1867 | EXPORT_SYMBOL(hci_recv_frame); |
| 1868 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1869 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1870 | int count, __u8 index) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1871 | { |
| 1872 | int len = 0; |
| 1873 | int hlen = 0; |
| 1874 | int remain = count; |
| 1875 | struct sk_buff *skb; |
| 1876 | struct bt_skb_cb *scb; |
| 1877 | |
| 1878 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 1879 | index >= NUM_REASSEMBLY) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1880 | return -EILSEQ; |
| 1881 | |
| 1882 | skb = hdev->reassembly[index]; |
| 1883 | |
| 1884 | if (!skb) { |
| 1885 | switch (type) { |
| 1886 | case HCI_ACLDATA_PKT: |
| 1887 | len = HCI_MAX_FRAME_SIZE; |
| 1888 | hlen = HCI_ACL_HDR_SIZE; |
| 1889 | break; |
| 1890 | case HCI_EVENT_PKT: |
| 1891 | len = HCI_MAX_EVENT_SIZE; |
| 1892 | hlen = HCI_EVENT_HDR_SIZE; |
| 1893 | break; |
| 1894 | case HCI_SCODATA_PKT: |
| 1895 | len = HCI_MAX_SCO_SIZE; |
| 1896 | hlen = HCI_SCO_HDR_SIZE; |
| 1897 | break; |
| 1898 | } |
| 1899 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1900 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1901 | if (!skb) |
| 1902 | return -ENOMEM; |
| 1903 | |
| 1904 | scb = (void *) skb->cb; |
| 1905 | scb->expect = hlen; |
| 1906 | scb->pkt_type = type; |
| 1907 | |
| 1908 | skb->dev = (void *) hdev; |
| 1909 | hdev->reassembly[index] = skb; |
| 1910 | } |
| 1911 | |
| 1912 | while (count) { |
| 1913 | scb = (void *) skb->cb; |
Dan Carpenter | 89bb46d | 2012-02-28 09:57:59 +0300 | [diff] [blame] | 1914 | len = min_t(uint, scb->expect, count); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1915 | |
| 1916 | memcpy(skb_put(skb, len), data, len); |
| 1917 | |
| 1918 | count -= len; |
| 1919 | data += len; |
| 1920 | scb->expect -= len; |
| 1921 | remain = count; |
| 1922 | |
| 1923 | switch (type) { |
| 1924 | case HCI_EVENT_PKT: |
| 1925 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1926 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1927 | scb->expect = h->plen; |
| 1928 | |
| 1929 | if (skb_tailroom(skb) < scb->expect) { |
| 1930 | kfree_skb(skb); |
| 1931 | hdev->reassembly[index] = NULL; |
| 1932 | return -ENOMEM; |
| 1933 | } |
| 1934 | } |
| 1935 | break; |
| 1936 | |
| 1937 | case HCI_ACLDATA_PKT: |
| 1938 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1939 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1940 | scb->expect = __le16_to_cpu(h->dlen); |
| 1941 | |
| 1942 | if (skb_tailroom(skb) < scb->expect) { |
| 1943 | kfree_skb(skb); |
| 1944 | hdev->reassembly[index] = NULL; |
| 1945 | return -ENOMEM; |
| 1946 | } |
| 1947 | } |
| 1948 | break; |
| 1949 | |
| 1950 | case HCI_SCODATA_PKT: |
| 1951 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1952 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1953 | scb->expect = h->dlen; |
| 1954 | |
| 1955 | if (skb_tailroom(skb) < scb->expect) { |
| 1956 | kfree_skb(skb); |
| 1957 | hdev->reassembly[index] = NULL; |
| 1958 | return -ENOMEM; |
| 1959 | } |
| 1960 | } |
| 1961 | break; |
| 1962 | } |
| 1963 | |
| 1964 | if (scb->expect == 0) { |
| 1965 | /* Complete frame */ |
| 1966 | |
| 1967 | bt_cb(skb)->pkt_type = type; |
| 1968 | hci_recv_frame(skb); |
| 1969 | |
| 1970 | hdev->reassembly[index] = NULL; |
| 1971 | return remain; |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | return remain; |
| 1976 | } |
| 1977 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1978 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1979 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1980 | int rem = 0; |
| 1981 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1982 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1983 | return -EILSEQ; |
| 1984 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1985 | while (count) { |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1986 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1987 | if (rem < 0) |
| 1988 | return rem; |
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 | data += (count - rem); |
| 1991 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 1992 | } |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1993 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1994 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1995 | } |
| 1996 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1997 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1998 | #define STREAM_REASSEMBLY 0 |
| 1999 | |
| 2000 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 2001 | { |
| 2002 | int type; |
| 2003 | int rem = 0; |
| 2004 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 2005 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2006 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 2007 | |
| 2008 | if (!skb) { |
| 2009 | struct { char type; } *pkt; |
| 2010 | |
| 2011 | /* Start of the frame */ |
| 2012 | pkt = data; |
| 2013 | type = pkt->type; |
| 2014 | |
| 2015 | data++; |
| 2016 | count--; |
| 2017 | } else |
| 2018 | type = bt_cb(skb)->pkt_type; |
| 2019 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 2020 | rem = hci_reassembly(hdev, type, data, count, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2021 | STREAM_REASSEMBLY); |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2022 | if (rem < 0) |
| 2023 | return rem; |
| 2024 | |
| 2025 | data += (count - rem); |
| 2026 | count = rem; |
Joe Perches | f81c622 | 2011-06-03 11:51:19 +0000 | [diff] [blame] | 2027 | } |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 2028 | |
| 2029 | return rem; |
| 2030 | } |
| 2031 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 2032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | /* ---- Interface to upper protocols ---- */ |
| 2034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | int hci_register_cb(struct hci_cb *cb) |
| 2036 | { |
| 2037 | BT_DBG("%p name %s", cb, cb->name); |
| 2038 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2039 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | list_add(&cb->list, &hci_cb_list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2041 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | |
| 2043 | return 0; |
| 2044 | } |
| 2045 | EXPORT_SYMBOL(hci_register_cb); |
| 2046 | |
| 2047 | int hci_unregister_cb(struct hci_cb *cb) |
| 2048 | { |
| 2049 | BT_DBG("%p name %s", cb, cb->name); |
| 2050 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2051 | write_lock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | list_del(&cb->list); |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 2053 | write_unlock(&hci_cb_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2054 | |
| 2055 | return 0; |
| 2056 | } |
| 2057 | EXPORT_SYMBOL(hci_unregister_cb); |
| 2058 | |
| 2059 | static int hci_send_frame(struct sk_buff *skb) |
| 2060 | { |
| 2061 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 2062 | |
| 2063 | if (!hdev) { |
| 2064 | kfree_skb(skb); |
| 2065 | return -ENODEV; |
| 2066 | } |
| 2067 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2068 | 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] | 2069 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2070 | /* Time stamp */ |
| 2071 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2073 | /* Send copy to monitor */ |
| 2074 | hci_send_to_monitor(hdev, skb); |
| 2075 | |
| 2076 | if (atomic_read(&hdev->promisc)) { |
| 2077 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2078 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | } |
| 2080 | |
| 2081 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 2082 | skb_orphan(skb); |
| 2083 | |
| 2084 | return hdev->send(skb); |
| 2085 | } |
| 2086 | |
| 2087 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2088 | 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] | 2089 | { |
| 2090 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 2091 | struct hci_command_hdr *hdr; |
| 2092 | struct sk_buff *skb; |
| 2093 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2094 | 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] | 2095 | |
| 2096 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 2097 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 2098 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | return -ENOMEM; |
| 2100 | } |
| 2101 | |
| 2102 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2103 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | hdr->plen = plen; |
| 2105 | |
| 2106 | if (plen) |
| 2107 | memcpy(skb_put(skb, plen), param, plen); |
| 2108 | |
| 2109 | BT_DBG("skb len %d", skb->len); |
| 2110 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2111 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2113 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 2114 | if (test_bit(HCI_INIT, &hdev->flags)) |
| 2115 | hdev->init_last_cmd = opcode; |
| 2116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2118 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | |
| 2120 | return 0; |
| 2121 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | |
| 2123 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2124 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | { |
| 2126 | struct hci_command_hdr *hdr; |
| 2127 | |
| 2128 | if (!hdev->sent_cmd) |
| 2129 | return NULL; |
| 2130 | |
| 2131 | hdr = (void *) hdev->sent_cmd->data; |
| 2132 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2133 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | return NULL; |
| 2135 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2136 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | |
| 2138 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 2139 | } |
| 2140 | |
| 2141 | /* Send ACL data */ |
| 2142 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 2143 | { |
| 2144 | struct hci_acl_hdr *hdr; |
| 2145 | int len = skb->len; |
| 2146 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2147 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 2148 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2149 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2150 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 2151 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | } |
| 2153 | |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 2154 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2155 | struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | { |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 2157 | struct hci_conn *conn = chan->conn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | struct hci_dev *hdev = conn->hdev; |
| 2159 | struct sk_buff *list; |
| 2160 | |
Gustavo Padovan | 087bfd9 | 2012-05-11 13:16:11 -0300 | [diff] [blame] | 2161 | skb->len = skb_headlen(skb); |
| 2162 | skb->data_len = 0; |
| 2163 | |
| 2164 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
| 2165 | hci_add_acl_hdr(skb, conn->handle, flags); |
| 2166 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2167 | list = skb_shinfo(skb)->frag_list; |
| 2168 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | /* Non fragmented */ |
| 2170 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 2171 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2172 | skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | } else { |
| 2174 | /* Fragmented */ |
| 2175 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2176 | |
| 2177 | skb_shinfo(skb)->frag_list = NULL; |
| 2178 | |
| 2179 | /* Queue all fragments atomically */ |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2180 | spin_lock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2182 | __skb_queue_tail(queue, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2183 | |
| 2184 | flags &= ~ACL_START; |
| 2185 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | do { |
| 2187 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2190 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2191 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | |
| 2193 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2194 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2195 | __skb_queue_tail(queue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2196 | } while (list); |
| 2197 | |
Gustavo F. Padovan | af3e635 | 2011-12-22 16:35:05 -0200 | [diff] [blame] | 2198 | spin_unlock(&queue->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2200 | } |
| 2201 | |
| 2202 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) |
| 2203 | { |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 2204 | struct hci_dev *hdev = chan->conn->hdev; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2205 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2206 | 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] | 2207 | |
| 2208 | skb->dev = (void *) hdev; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2209 | |
Andrei Emeltchenko | ee22be7 | 2012-09-21 12:30:04 +0300 | [diff] [blame] | 2210 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2212 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2214 | |
| 2215 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 2216 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | { |
| 2218 | struct hci_dev *hdev = conn->hdev; |
| 2219 | struct hci_sco_hdr hdr; |
| 2220 | |
| 2221 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 2222 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2223 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | hdr.dlen = skb->len; |
| 2225 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2226 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 2227 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2228 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | |
| 2230 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2231 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | skb_queue_tail(&conn->data_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2234 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | |
| 2237 | /* ---- HCI TX task (outgoing data) ---- */ |
| 2238 | |
| 2239 | /* HCI Connection scheduler */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2240 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
| 2241 | int *quote) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | { |
| 2243 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2244 | struct hci_conn *conn = NULL, *c; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2245 | unsigned int num = 0, min = ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2247 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | * added and removed with TX task disabled. */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2249 | |
| 2250 | rcu_read_lock(); |
| 2251 | |
| 2252 | list_for_each_entry_rcu(c, &h->list, list) { |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2253 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2255 | |
| 2256 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 2257 | continue; |
| 2258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | num++; |
| 2260 | |
| 2261 | if (c->sent < min) { |
| 2262 | min = c->sent; |
| 2263 | conn = c; |
| 2264 | } |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2265 | |
| 2266 | if (hci_conn_num(hdev, type) == num) |
| 2267 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | } |
| 2269 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2270 | rcu_read_unlock(); |
| 2271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2273 | int cnt, q; |
| 2274 | |
| 2275 | switch (conn->type) { |
| 2276 | case ACL_LINK: |
| 2277 | cnt = hdev->acl_cnt; |
| 2278 | break; |
| 2279 | case SCO_LINK: |
| 2280 | case ESCO_LINK: |
| 2281 | cnt = hdev->sco_cnt; |
| 2282 | break; |
| 2283 | case LE_LINK: |
| 2284 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2285 | break; |
| 2286 | default: |
| 2287 | cnt = 0; |
| 2288 | BT_ERR("Unknown link type"); |
| 2289 | } |
| 2290 | |
| 2291 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | *quote = q ? q : 1; |
| 2293 | } else |
| 2294 | *quote = 0; |
| 2295 | |
| 2296 | BT_DBG("conn %p quote %d", conn, *quote); |
| 2297 | return conn; |
| 2298 | } |
| 2299 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2300 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | { |
| 2302 | struct hci_conn_hash *h = &hdev->conn_hash; |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 2303 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2305 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2307 | rcu_read_lock(); |
| 2308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | /* Kill stalled connections */ |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2310 | list_for_each_entry_rcu(c, &h->list, list) { |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2311 | if (c->type == type && c->sent) { |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 2312 | BT_ERR("%s killing stalled connection %pMR", |
| 2313 | hdev->name, &c->dst); |
Andrei Emeltchenko | 7490c6c | 2012-06-01 16:18:25 +0300 | [diff] [blame] | 2314 | hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | } |
| 2316 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2317 | |
| 2318 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | } |
| 2320 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2321 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
| 2322 | int *quote) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2323 | { |
| 2324 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2325 | struct hci_chan *chan = NULL; |
Mikel Astiz | abc5de8 | 2012-04-11 08:48:47 +0200 | [diff] [blame] | 2326 | unsigned int num = 0, min = ~0, cur_prio = 0; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2327 | struct hci_conn *conn; |
| 2328 | int cnt, q, conn_num = 0; |
| 2329 | |
| 2330 | BT_DBG("%s", hdev->name); |
| 2331 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2332 | rcu_read_lock(); |
| 2333 | |
| 2334 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2335 | struct hci_chan *tmp; |
| 2336 | |
| 2337 | if (conn->type != type) |
| 2338 | continue; |
| 2339 | |
| 2340 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2341 | continue; |
| 2342 | |
| 2343 | conn_num++; |
| 2344 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2345 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2346 | struct sk_buff *skb; |
| 2347 | |
| 2348 | if (skb_queue_empty(&tmp->data_q)) |
| 2349 | continue; |
| 2350 | |
| 2351 | skb = skb_peek(&tmp->data_q); |
| 2352 | if (skb->priority < cur_prio) |
| 2353 | continue; |
| 2354 | |
| 2355 | if (skb->priority > cur_prio) { |
| 2356 | num = 0; |
| 2357 | min = ~0; |
| 2358 | cur_prio = skb->priority; |
| 2359 | } |
| 2360 | |
| 2361 | num++; |
| 2362 | |
| 2363 | if (conn->sent < min) { |
| 2364 | min = conn->sent; |
| 2365 | chan = tmp; |
| 2366 | } |
| 2367 | } |
| 2368 | |
| 2369 | if (hci_conn_num(hdev, type) == conn_num) |
| 2370 | break; |
| 2371 | } |
| 2372 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2373 | rcu_read_unlock(); |
| 2374 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2375 | if (!chan) |
| 2376 | return NULL; |
| 2377 | |
| 2378 | switch (chan->conn->type) { |
| 2379 | case ACL_LINK: |
| 2380 | cnt = hdev->acl_cnt; |
| 2381 | break; |
| 2382 | case SCO_LINK: |
| 2383 | case ESCO_LINK: |
| 2384 | cnt = hdev->sco_cnt; |
| 2385 | break; |
| 2386 | case LE_LINK: |
| 2387 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2388 | break; |
| 2389 | default: |
| 2390 | cnt = 0; |
| 2391 | BT_ERR("Unknown link type"); |
| 2392 | } |
| 2393 | |
| 2394 | q = cnt / num; |
| 2395 | *quote = q ? q : 1; |
| 2396 | BT_DBG("chan %p quote %d", chan, *quote); |
| 2397 | return chan; |
| 2398 | } |
| 2399 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2400 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
| 2401 | { |
| 2402 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2403 | struct hci_conn *conn; |
| 2404 | int num = 0; |
| 2405 | |
| 2406 | BT_DBG("%s", hdev->name); |
| 2407 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2408 | rcu_read_lock(); |
| 2409 | |
| 2410 | list_for_each_entry_rcu(conn, &h->list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2411 | struct hci_chan *chan; |
| 2412 | |
| 2413 | if (conn->type != type) |
| 2414 | continue; |
| 2415 | |
| 2416 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) |
| 2417 | continue; |
| 2418 | |
| 2419 | num++; |
| 2420 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 2421 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2422 | struct sk_buff *skb; |
| 2423 | |
| 2424 | if (chan->sent) { |
| 2425 | chan->sent = 0; |
| 2426 | continue; |
| 2427 | } |
| 2428 | |
| 2429 | if (skb_queue_empty(&chan->data_q)) |
| 2430 | continue; |
| 2431 | |
| 2432 | skb = skb_peek(&chan->data_q); |
| 2433 | if (skb->priority >= HCI_PRIO_MAX - 1) |
| 2434 | continue; |
| 2435 | |
| 2436 | skb->priority = HCI_PRIO_MAX - 1; |
| 2437 | |
| 2438 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2439 | skb->priority); |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2440 | } |
| 2441 | |
| 2442 | if (hci_conn_num(hdev, type) == num) |
| 2443 | break; |
| 2444 | } |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 2445 | |
| 2446 | rcu_read_unlock(); |
| 2447 | |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2448 | } |
| 2449 | |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2450 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
| 2451 | { |
| 2452 | /* Calculate count of blocks used by this packet */ |
| 2453 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); |
| 2454 | } |
| 2455 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2456 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2459 | /* ACL tx timeout must be longer than maximum |
| 2460 | * link supervision timeout (40.9 seconds) */ |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2461 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 2462 | HCI_ACL_TX_TIMEOUT)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2463 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2464 | } |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2465 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2466 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2467 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2468 | { |
| 2469 | unsigned int cnt = hdev->acl_cnt; |
| 2470 | struct hci_chan *chan; |
| 2471 | struct sk_buff *skb; |
| 2472 | int quote; |
| 2473 | |
| 2474 | __check_timeout(hdev, cnt); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2475 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2476 | while (hdev->acl_cnt && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2477 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2478 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2479 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2480 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2481 | skb->len, skb->priority); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2482 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2483 | /* Stop if priority has changed */ |
| 2484 | if (skb->priority < priority) |
| 2485 | break; |
| 2486 | |
| 2487 | skb = skb_dequeue(&chan->data_q); |
| 2488 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2489 | hci_conn_enter_active_mode(chan->conn, |
Gustavo F. Padovan | 0412468 | 2012-03-08 01:25:00 -0300 | [diff] [blame] | 2490 | bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | hci_send_frame(skb); |
| 2493 | hdev->acl_last_tx = jiffies; |
| 2494 | |
| 2495 | hdev->acl_cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2496 | chan->sent++; |
| 2497 | chan->conn->sent++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2498 | } |
| 2499 | } |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2500 | |
| 2501 | if (cnt != hdev->acl_cnt) |
| 2502 | hci_prio_recalculate(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2503 | } |
| 2504 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2505 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2506 | { |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2507 | unsigned int cnt = hdev->block_cnt; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2508 | struct hci_chan *chan; |
| 2509 | struct sk_buff *skb; |
| 2510 | int quote; |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2511 | |
Andrei Emeltchenko | 63d2bc1 | 2012-02-03 16:27:55 +0200 | [diff] [blame] | 2512 | __check_timeout(hdev, cnt); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2513 | |
| 2514 | while (hdev->block_cnt > 0 && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2515 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2516 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2517 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { |
| 2518 | int blocks; |
| 2519 | |
| 2520 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2521 | skb->len, skb->priority); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2522 | |
| 2523 | /* Stop if priority has changed */ |
| 2524 | if (skb->priority < priority) |
| 2525 | break; |
| 2526 | |
| 2527 | skb = skb_dequeue(&chan->data_q); |
| 2528 | |
| 2529 | blocks = __get_blocks(hdev, skb); |
| 2530 | if (blocks > hdev->block_cnt) |
| 2531 | return; |
| 2532 | |
| 2533 | hci_conn_enter_active_mode(chan->conn, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2534 | bt_cb(skb)->force_active); |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2535 | |
| 2536 | hci_send_frame(skb); |
| 2537 | hdev->acl_last_tx = jiffies; |
| 2538 | |
| 2539 | hdev->block_cnt -= blocks; |
| 2540 | quote -= blocks; |
| 2541 | |
| 2542 | chan->sent += blocks; |
| 2543 | chan->conn->sent += blocks; |
| 2544 | } |
| 2545 | } |
| 2546 | |
| 2547 | if (cnt != hdev->block_cnt) |
| 2548 | hci_prio_recalculate(hdev, ACL_LINK); |
| 2549 | } |
| 2550 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2551 | static void hci_sched_acl(struct hci_dev *hdev) |
Andrei Emeltchenko | b71d385 | 2012-02-03 16:27:54 +0200 | [diff] [blame] | 2552 | { |
| 2553 | BT_DBG("%s", hdev->name); |
| 2554 | |
| 2555 | if (!hci_conn_num(hdev, ACL_LINK)) |
| 2556 | return; |
| 2557 | |
| 2558 | switch (hdev->flow_ctl_mode) { |
| 2559 | case HCI_FLOW_CTL_MODE_PACKET_BASED: |
| 2560 | hci_sched_acl_pkt(hdev); |
| 2561 | break; |
| 2562 | |
| 2563 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: |
| 2564 | hci_sched_acl_blk(hdev); |
| 2565 | break; |
| 2566 | } |
| 2567 | } |
| 2568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2569 | /* Schedule SCO */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2570 | static void hci_sched_sco(struct hci_dev *hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | { |
| 2572 | struct hci_conn *conn; |
| 2573 | struct sk_buff *skb; |
| 2574 | int quote; |
| 2575 | |
| 2576 | BT_DBG("%s", hdev->name); |
| 2577 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2578 | if (!hci_conn_num(hdev, SCO_LINK)) |
| 2579 | return; |
| 2580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 2582 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2583 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2584 | hci_send_frame(skb); |
| 2585 | |
| 2586 | conn->sent++; |
| 2587 | if (conn->sent == ~0) |
| 2588 | conn->sent = 0; |
| 2589 | } |
| 2590 | } |
| 2591 | } |
| 2592 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2593 | static void hci_sched_esco(struct hci_dev *hdev) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2594 | { |
| 2595 | struct hci_conn *conn; |
| 2596 | struct sk_buff *skb; |
| 2597 | int quote; |
| 2598 | |
| 2599 | BT_DBG("%s", hdev->name); |
| 2600 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2601 | if (!hci_conn_num(hdev, ESCO_LINK)) |
| 2602 | return; |
| 2603 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 2604 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
| 2605 | "e))) { |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2606 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2607 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2608 | hci_send_frame(skb); |
| 2609 | |
| 2610 | conn->sent++; |
| 2611 | if (conn->sent == ~0) |
| 2612 | conn->sent = 0; |
| 2613 | } |
| 2614 | } |
| 2615 | } |
| 2616 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2617 | static void hci_sched_le(struct hci_dev *hdev) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2618 | { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2619 | struct hci_chan *chan; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2620 | struct sk_buff *skb; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2621 | int quote, cnt, tmp; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2622 | |
| 2623 | BT_DBG("%s", hdev->name); |
| 2624 | |
Luiz Augusto von Dentz | 52087a7 | 2011-08-17 16:23:00 +0300 | [diff] [blame] | 2625 | if (!hci_conn_num(hdev, LE_LINK)) |
| 2626 | return; |
| 2627 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2628 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2629 | /* LE tx timeout must be longer than maximum |
| 2630 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2631 | if (!hdev->le_cnt && hdev->le_pkts && |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2632 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d9 | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2633 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2634 | } |
| 2635 | |
| 2636 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2637 | tmp = cnt; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2638 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2639 | u32 priority = (skb_peek(&chan->data_q))->priority; |
| 2640 | while (quote-- && (skb = skb_peek(&chan->data_q))) { |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2641 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2642 | skb->len, skb->priority); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2643 | |
Luiz Augusto von Dentz | ec1cce2 | 2011-11-02 15:52:02 +0200 | [diff] [blame] | 2644 | /* Stop if priority has changed */ |
| 2645 | if (skb->priority < priority) |
| 2646 | break; |
| 2647 | |
| 2648 | skb = skb_dequeue(&chan->data_q); |
| 2649 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2650 | hci_send_frame(skb); |
| 2651 | hdev->le_last_tx = jiffies; |
| 2652 | |
| 2653 | cnt--; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2654 | chan->sent++; |
| 2655 | chan->conn->sent++; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2656 | } |
| 2657 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 2658 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2659 | if (hdev->le_pkts) |
| 2660 | hdev->le_cnt = cnt; |
| 2661 | else |
| 2662 | hdev->acl_cnt = cnt; |
Luiz Augusto von Dentz | 02b20f0 | 2011-11-02 15:52:03 +0200 | [diff] [blame] | 2663 | |
| 2664 | if (cnt != tmp) |
| 2665 | hci_prio_recalculate(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2666 | } |
| 2667 | |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2668 | static void hci_tx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | { |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 2670 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | struct sk_buff *skb; |
| 2672 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2673 | 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] | 2674 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2675 | |
| 2676 | /* Schedule queues and send stuff to HCI driver */ |
| 2677 | |
| 2678 | hci_sched_acl(hdev); |
| 2679 | |
| 2680 | hci_sched_sco(hdev); |
| 2681 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2682 | hci_sched_esco(hdev); |
| 2683 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2684 | hci_sched_le(hdev); |
| 2685 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2686 | /* Send next queued raw (unknown type) packet */ |
| 2687 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 2688 | hci_send_frame(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | } |
| 2690 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2691 | /* ----- HCI RX task (incoming data processing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | |
| 2693 | /* ACL data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2694 | 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] | 2695 | { |
| 2696 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 2697 | struct hci_conn *conn; |
| 2698 | __u16 handle, flags; |
| 2699 | |
| 2700 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 2701 | |
| 2702 | handle = __le16_to_cpu(hdr->handle); |
| 2703 | flags = hci_flags(handle); |
| 2704 | handle = hci_handle(handle); |
| 2705 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2706 | 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] | 2707 | handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | |
| 2709 | hdev->stat.acl_rx++; |
| 2710 | |
| 2711 | hci_dev_lock(hdev); |
| 2712 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2713 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2714 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | if (conn) { |
Mat Martineau | 65983fc | 2011-12-13 15:06:02 -0800 | [diff] [blame] | 2716 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2717 | |
Johan Hedberg | 671267b | 2012-05-12 16:11:50 -0300 | [diff] [blame] | 2718 | hci_dev_lock(hdev); |
| 2719 | if (test_bit(HCI_MGMT, &hdev->dev_flags) && |
| 2720 | !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) |
| 2721 | mgmt_device_connected(hdev, &conn->dst, conn->type, |
| 2722 | conn->dst_type, 0, NULL, 0, |
| 2723 | conn->dev_class); |
| 2724 | hci_dev_unlock(hdev); |
| 2725 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2727 | l2cap_recv_acldata(conn, skb, flags); |
| 2728 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2730 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2731 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | } |
| 2733 | |
| 2734 | kfree_skb(skb); |
| 2735 | } |
| 2736 | |
| 2737 | /* SCO data packet */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 2738 | 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] | 2739 | { |
| 2740 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 2741 | struct hci_conn *conn; |
| 2742 | __u16 handle; |
| 2743 | |
| 2744 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 2745 | |
| 2746 | handle = __le16_to_cpu(hdr->handle); |
| 2747 | |
Andrei Emeltchenko | f0e0951 | 2012-06-11 11:13:09 +0300 | [diff] [blame] | 2748 | 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] | 2749 | |
| 2750 | hdev->stat.sco_rx++; |
| 2751 | |
| 2752 | hci_dev_lock(hdev); |
| 2753 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2754 | hci_dev_unlock(hdev); |
| 2755 | |
| 2756 | if (conn) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | /* Send to upper protocol */ |
Ulisses Furquim | 686ebf2 | 2011-12-21 10:11:33 -0200 | [diff] [blame] | 2758 | sco_recv_scodata(conn, skb); |
| 2759 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2761 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Gustavo Padovan | a8c5fb1 | 2012-05-17 00:36:26 -0300 | [diff] [blame] | 2762 | hdev->name, handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | } |
| 2764 | |
| 2765 | kfree_skb(skb); |
| 2766 | } |
| 2767 | |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2768 | static void hci_rx_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | { |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2770 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | struct sk_buff *skb; |
| 2772 | |
| 2773 | BT_DBG("%s", hdev->name); |
| 2774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 2776 | /* Send copy to monitor */ |
| 2777 | hci_send_to_monitor(hdev, skb); |
| 2778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2779 | if (atomic_read(&hdev->promisc)) { |
| 2780 | /* Send copy to the sockets */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 2781 | hci_send_to_sock(hdev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2782 | } |
| 2783 | |
| 2784 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 2785 | kfree_skb(skb); |
| 2786 | continue; |
| 2787 | } |
| 2788 | |
| 2789 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 2790 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2791 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | case HCI_ACLDATA_PKT: |
| 2793 | case HCI_SCODATA_PKT: |
| 2794 | kfree_skb(skb); |
| 2795 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 2796 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | } |
| 2798 | |
| 2799 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2800 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | case HCI_EVENT_PKT: |
Marcel Holtmann | b78752c | 2010-08-08 23:06:53 -0400 | [diff] [blame] | 2802 | BT_DBG("%s Event packet", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2803 | hci_event_packet(hdev, skb); |
| 2804 | break; |
| 2805 | |
| 2806 | case HCI_ACLDATA_PKT: |
| 2807 | BT_DBG("%s ACL data packet", hdev->name); |
| 2808 | hci_acldata_packet(hdev, skb); |
| 2809 | break; |
| 2810 | |
| 2811 | case HCI_SCODATA_PKT: |
| 2812 | BT_DBG("%s SCO data packet", hdev->name); |
| 2813 | hci_scodata_packet(hdev, skb); |
| 2814 | break; |
| 2815 | |
| 2816 | default: |
| 2817 | kfree_skb(skb); |
| 2818 | break; |
| 2819 | } |
| 2820 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | } |
| 2822 | |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2823 | static void hci_cmd_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | { |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2825 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | struct sk_buff *skb; |
| 2827 | |
Andrei Emeltchenko | 2104786 | 2012-07-10 15:27:47 +0300 | [diff] [blame] | 2828 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
| 2829 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2830 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 2832 | if (atomic_read(&hdev->cmd_cnt)) { |
| 2833 | skb = skb_dequeue(&hdev->cmd_q); |
| 2834 | if (!skb) |
| 2835 | return; |
| 2836 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 2837 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2839 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 2840 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2841 | atomic_dec(&hdev->cmd_cnt); |
| 2842 | hci_send_frame(skb); |
Szymon Janc | 7bdb8a5 | 2011-07-26 22:46:54 +0200 | [diff] [blame] | 2843 | if (test_bit(HCI_RESET, &hdev->flags)) |
| 2844 | del_timer(&hdev->cmd_timer); |
| 2845 | else |
| 2846 | mod_timer(&hdev->cmd_timer, |
Andrei Emeltchenko | 5f246e8 | 2012-06-11 11:13:07 +0300 | [diff] [blame] | 2847 | jiffies + HCI_CMD_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | } else { |
| 2849 | skb_queue_head(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 2850 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | } |
| 2852 | } |
| 2853 | } |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2854 | |
| 2855 | int hci_do_inquiry(struct hci_dev *hdev, u8 length) |
| 2856 | { |
| 2857 | /* General inquiry access code (GIAC) */ |
| 2858 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; |
| 2859 | struct hci_cp_inquiry cp; |
| 2860 | |
| 2861 | BT_DBG("%s", hdev->name); |
| 2862 | |
| 2863 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 2864 | return -EINPROGRESS; |
| 2865 | |
Johan Hedberg | 4663262 | 2012-01-02 16:06:08 +0200 | [diff] [blame] | 2866 | inquiry_cache_flush(hdev); |
| 2867 | |
Andre Guedes | 2519a1f | 2011-11-07 11:45:24 -0300 | [diff] [blame] | 2868 | memset(&cp, 0, sizeof(cp)); |
| 2869 | memcpy(&cp.lap, lap, sizeof(cp.lap)); |
| 2870 | cp.length = length; |
| 2871 | |
| 2872 | return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
| 2873 | } |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2874 | |
| 2875 | int hci_cancel_inquiry(struct hci_dev *hdev) |
| 2876 | { |
| 2877 | BT_DBG("%s", hdev->name); |
| 2878 | |
| 2879 | if (!test_bit(HCI_INQUIRY, &hdev->flags)) |
Andre Guedes | 7537e5c | 2012-03-20 00:13:38 -0300 | [diff] [blame] | 2880 | return -EALREADY; |
Andre Guedes | 023d5049 | 2011-11-04 14:16:52 -0300 | [diff] [blame] | 2881 | |
| 2882 | return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); |
| 2883 | } |
Andre Guedes | 31f7956 | 2012-04-24 21:02:53 -0300 | [diff] [blame] | 2884 | |
| 2885 | u8 bdaddr_to_le(u8 bdaddr_type) |
| 2886 | { |
| 2887 | switch (bdaddr_type) { |
| 2888 | case BDADDR_LE_PUBLIC: |
| 2889 | return ADDR_LE_DEV_PUBLIC; |
| 2890 | |
| 2891 | default: |
| 2892 | /* Fallback to LE Random address type */ |
| 2893 | return ADDR_LE_DEV_RANDOM; |
| 2894 | } |
| 2895 | } |