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 |
| 4 | |
| 5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation; |
| 10 | |
| 11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 14 | 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] | 15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | SOFTWARE IS DISCLAIMED. |
| 23 | */ |
| 24 | |
| 25 | /* Bluetooth HCI core. */ |
| 26 | |
S.Çağlar Onur | 82453021 | 2008-02-17 23:25:57 -0800 | [diff] [blame] | 27 | #include <linux/jiffies.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | #include <linux/kmod.h> |
| 30 | |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/errno.h> |
| 33 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/sched.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/poll.h> |
| 37 | #include <linux/fcntl.h> |
| 38 | #include <linux/init.h> |
| 39 | #include <linux/skbuff.h> |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 40 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/notifier.h> |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 43 | #include <linux/rfkill.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <net/sock.h> |
| 45 | |
| 46 | #include <asm/system.h> |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 47 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <asm/unaligned.h> |
| 49 | |
| 50 | #include <net/bluetooth/bluetooth.h> |
| 51 | #include <net/bluetooth/hci_core.h> |
| 52 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 53 | #define AUTO_OFF_TIMEOUT 2000 |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | static void hci_cmd_task(unsigned long arg); |
| 56 | static void hci_rx_task(unsigned long arg); |
| 57 | static void hci_tx_task(unsigned long arg); |
| 58 | static void hci_notify(struct hci_dev *hdev, int event); |
| 59 | |
| 60 | static DEFINE_RWLOCK(hci_task_lock); |
| 61 | |
| 62 | /* HCI device list */ |
| 63 | LIST_HEAD(hci_dev_list); |
| 64 | DEFINE_RWLOCK(hci_dev_list_lock); |
| 65 | |
| 66 | /* HCI callback list */ |
| 67 | LIST_HEAD(hci_cb_list); |
| 68 | DEFINE_RWLOCK(hci_cb_list_lock); |
| 69 | |
| 70 | /* HCI protocols */ |
| 71 | #define HCI_MAX_PROTO 2 |
| 72 | struct hci_proto *hci_proto[HCI_MAX_PROTO]; |
| 73 | |
| 74 | /* HCI notifiers list */ |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 75 | static ATOMIC_NOTIFIER_HEAD(hci_notifier); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | /* ---- HCI notifications ---- */ |
| 78 | |
| 79 | int hci_register_notifier(struct notifier_block *nb) |
| 80 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 81 | return atomic_notifier_chain_register(&hci_notifier, nb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | int hci_unregister_notifier(struct notifier_block *nb) |
| 85 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 86 | return atomic_notifier_chain_unregister(&hci_notifier, nb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | } |
| 88 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 89 | static void hci_notify(struct hci_dev *hdev, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 91 | atomic_notifier_call_chain(&hci_notifier, event, hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | /* ---- HCI requests ---- */ |
| 95 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 96 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 98 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
| 99 | |
| 100 | /* If the request has set req_last_cmd (typical for multi-HCI |
| 101 | * command requests) check if the completed command matches |
| 102 | * this, and if not just return. Single HCI command requests |
| 103 | * typically leave req_last_cmd as 0 */ |
| 104 | if (hdev->req_last_cmd && cmd != hdev->req_last_cmd) |
| 105 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | if (hdev->req_status == HCI_REQ_PEND) { |
| 108 | hdev->req_result = result; |
| 109 | hdev->req_status = HCI_REQ_DONE; |
| 110 | wake_up_interruptible(&hdev->req_wait_q); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 115 | { |
| 116 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 117 | |
| 118 | if (hdev->req_status == HCI_REQ_PEND) { |
| 119 | hdev->req_result = err; |
| 120 | hdev->req_status = HCI_REQ_CANCELED; |
| 121 | wake_up_interruptible(&hdev->req_wait_q); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | /* Execute request and wait for completion. */ |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 126 | static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | unsigned long opt, __u32 timeout) |
| 128 | { |
| 129 | DECLARE_WAITQUEUE(wait, current); |
| 130 | int err = 0; |
| 131 | |
| 132 | BT_DBG("%s start", hdev->name); |
| 133 | |
| 134 | hdev->req_status = HCI_REQ_PEND; |
| 135 | |
| 136 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 137 | set_current_state(TASK_INTERRUPTIBLE); |
| 138 | |
| 139 | req(hdev, opt); |
| 140 | schedule_timeout(timeout); |
| 141 | |
| 142 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 143 | |
| 144 | if (signal_pending(current)) |
| 145 | return -EINTR; |
| 146 | |
| 147 | switch (hdev->req_status) { |
| 148 | case HCI_REQ_DONE: |
| 149 | err = -bt_err(hdev->req_result); |
| 150 | break; |
| 151 | |
| 152 | case HCI_REQ_CANCELED: |
| 153 | err = -hdev->req_result; |
| 154 | break; |
| 155 | |
| 156 | default: |
| 157 | err = -ETIMEDOUT; |
| 158 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 159 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 161 | hdev->req_last_cmd = hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | BT_DBG("%s end: err %d", hdev->name, err); |
| 164 | |
| 165 | return err; |
| 166 | } |
| 167 | |
| 168 | static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
| 169 | unsigned long opt, __u32 timeout) |
| 170 | { |
| 171 | int ret; |
| 172 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 173 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 174 | return -ENETDOWN; |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | /* Serialize all requests */ |
| 177 | hci_req_lock(hdev); |
| 178 | ret = __hci_request(hdev, req, opt, timeout); |
| 179 | hci_req_unlock(hdev); |
| 180 | |
| 181 | return ret; |
| 182 | } |
| 183 | |
| 184 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) |
| 185 | { |
| 186 | BT_DBG("%s %ld", hdev->name, opt); |
| 187 | |
| 188 | /* Reset device */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 189 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) |
| 193 | { |
| 194 | struct sk_buff *skb; |
Marcel Holtmann | 1ebb925 | 2005-11-08 09:57:21 -0800 | [diff] [blame] | 195 | __le16 param; |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 196 | __u8 flt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | BT_DBG("%s %ld", hdev->name, opt); |
| 199 | |
| 200 | /* Driver initialization */ |
| 201 | |
| 202 | /* Special commands */ |
| 203 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 204 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 206 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 208 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
| 210 | skb_queue_purge(&hdev->driver_init); |
| 211 | |
| 212 | /* Mandatory initialization */ |
| 213 | |
| 214 | /* Reset */ |
Marcel Holtmann | 7a9d402 | 2008-11-30 12:17:26 +0100 | [diff] [blame] | 215 | if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 216 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
| 218 | /* Read Local Supported Features */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 219 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 221 | /* Read Local Version */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 222 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 225 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | #if 0 |
| 228 | /* Host buffer size */ |
| 229 | { |
| 230 | struct hci_cp_host_buffer_size cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 231 | cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | cp.sco_mtu = HCI_MAX_SCO_SIZE; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 233 | cp.acl_max_pkt = cpu_to_le16(0xffff); |
| 234 | cp.sco_max_pkt = cpu_to_le16(0xffff); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 235 | hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | } |
| 237 | #endif |
| 238 | |
| 239 | /* Read BD Address */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 240 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
| 241 | |
| 242 | /* Read Class of Device */ |
| 243 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
| 244 | |
| 245 | /* Read Local Name */ |
| 246 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | /* Read Voice Setting */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 249 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | /* Optional initialization */ |
| 252 | |
| 253 | /* Clear Event Filters */ |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 254 | flt_type = HCI_FLT_CLEAR_ALL; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 255 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | /* Page timeout ~20 secs */ |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 258 | param = cpu_to_le16(0x8000); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 259 | hci_send_cmd(hdev, HCI_OP_WRITE_PG_TIMEOUT, 2, ¶m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | /* Connection accept timeout ~20 secs */ |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 262 | param = cpu_to_le16(0x7d00); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 263 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 264 | |
| 265 | hdev->req_last_cmd = HCI_OP_WRITE_CA_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 269 | { |
| 270 | __u8 scan = opt; |
| 271 | |
| 272 | BT_DBG("%s %x", hdev->name, scan); |
| 273 | |
| 274 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 275 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 279 | { |
| 280 | __u8 auth = opt; |
| 281 | |
| 282 | BT_DBG("%s %x", hdev->name, auth); |
| 283 | |
| 284 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 285 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 289 | { |
| 290 | __u8 encrypt = opt; |
| 291 | |
| 292 | BT_DBG("%s %x", hdev->name, encrypt); |
| 293 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 294 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 295 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | } |
| 297 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 298 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 299 | { |
| 300 | __le16 policy = cpu_to_le16(opt); |
| 301 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 302 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 303 | |
| 304 | /* Default link policy */ |
| 305 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 306 | } |
| 307 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 308 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | * Device is held on return. */ |
| 310 | struct hci_dev *hci_dev_get(int index) |
| 311 | { |
| 312 | struct hci_dev *hdev = NULL; |
| 313 | struct list_head *p; |
| 314 | |
| 315 | BT_DBG("%d", index); |
| 316 | |
| 317 | if (index < 0) |
| 318 | return NULL; |
| 319 | |
| 320 | read_lock(&hci_dev_list_lock); |
| 321 | list_for_each(p, &hci_dev_list) { |
| 322 | struct hci_dev *d = list_entry(p, struct hci_dev, list); |
| 323 | if (d->id == index) { |
| 324 | hdev = hci_dev_hold(d); |
| 325 | break; |
| 326 | } |
| 327 | } |
| 328 | read_unlock(&hci_dev_list_lock); |
| 329 | return hdev; |
| 330 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | /* ---- Inquiry support ---- */ |
| 333 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 334 | { |
| 335 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 336 | struct inquiry_entry *next = cache->list, *e; |
| 337 | |
| 338 | BT_DBG("cache %p", cache); |
| 339 | |
| 340 | cache->list = NULL; |
| 341 | while ((e = next)) { |
| 342 | next = e->next; |
| 343 | kfree(e); |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 348 | { |
| 349 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 350 | struct inquiry_entry *e; |
| 351 | |
| 352 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 353 | |
| 354 | for (e = cache->list; e; e = e->next) |
| 355 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 356 | break; |
| 357 | return e; |
| 358 | } |
| 359 | |
| 360 | void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) |
| 361 | { |
| 362 | struct inquiry_cache *cache = &hdev->inq_cache; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 363 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); |
| 366 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 367 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
| 368 | if (!ie) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | /* Entry not in the cache. Add new one. */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 370 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 371 | if (!ie) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 373 | |
| 374 | ie->next = cache->list; |
| 375 | cache->list = ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
| 377 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 378 | memcpy(&ie->data, data, sizeof(*data)); |
| 379 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | cache->timestamp = jiffies; |
| 381 | } |
| 382 | |
| 383 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 384 | { |
| 385 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 386 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 387 | struct inquiry_entry *e; |
| 388 | int copied = 0; |
| 389 | |
| 390 | for (e = cache->list; e && copied < num; e = e->next, copied++) { |
| 391 | struct inquiry_data *data = &e->data; |
| 392 | bacpy(&info->bdaddr, &data->bdaddr); |
| 393 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 394 | info->pscan_period_mode = data->pscan_period_mode; |
| 395 | info->pscan_mode = data->pscan_mode; |
| 396 | memcpy(info->dev_class, data->dev_class, 3); |
| 397 | info->clock_offset = data->clock_offset; |
| 398 | info++; |
| 399 | } |
| 400 | |
| 401 | BT_DBG("cache %p, copied %d", cache, copied); |
| 402 | return copied; |
| 403 | } |
| 404 | |
| 405 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 406 | { |
| 407 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 408 | struct hci_cp_inquiry cp; |
| 409 | |
| 410 | BT_DBG("%s", hdev->name); |
| 411 | |
| 412 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 413 | return; |
| 414 | |
| 415 | /* Start Inquiry */ |
| 416 | memcpy(&cp.lap, &ir->lap, 3); |
| 417 | cp.length = ir->length; |
| 418 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 419 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | int hci_inquiry(void __user *arg) |
| 423 | { |
| 424 | __u8 __user *ptr = arg; |
| 425 | struct hci_inquiry_req ir; |
| 426 | struct hci_dev *hdev; |
| 427 | int err = 0, do_inquiry = 0, max_rsp; |
| 428 | long timeo; |
| 429 | __u8 *buf; |
| 430 | |
| 431 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 432 | return -EFAULT; |
| 433 | |
| 434 | if (!(hdev = hci_dev_get(ir.dev_id))) |
| 435 | return -ENODEV; |
| 436 | |
| 437 | hci_dev_lock_bh(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 438 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 439 | inquiry_cache_empty(hdev) || |
| 440 | ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | inquiry_cache_flush(hdev); |
| 442 | do_inquiry = 1; |
| 443 | } |
| 444 | hci_dev_unlock_bh(hdev); |
| 445 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 446 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 447 | |
| 448 | if (do_inquiry) { |
| 449 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 450 | if (err < 0) |
| 451 | goto done; |
| 452 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | /* for unlimited number of responses we will use buffer with 255 entries */ |
| 455 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 456 | |
| 457 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 458 | * copy it to the user space. |
| 459 | */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 460 | buf = kmalloc(sizeof(struct inquiry_info) *max_rsp, GFP_KERNEL); |
| 461 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | err = -ENOMEM; |
| 463 | goto done; |
| 464 | } |
| 465 | |
| 466 | hci_dev_lock_bh(hdev); |
| 467 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
| 468 | hci_dev_unlock_bh(hdev); |
| 469 | |
| 470 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 471 | |
| 472 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 473 | ptr += sizeof(ir); |
| 474 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
| 475 | ir.num_rsp)) |
| 476 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 477 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | err = -EFAULT; |
| 479 | |
| 480 | kfree(buf); |
| 481 | |
| 482 | done: |
| 483 | hci_dev_put(hdev); |
| 484 | return err; |
| 485 | } |
| 486 | |
| 487 | /* ---- HCI ioctl helpers ---- */ |
| 488 | |
| 489 | int hci_dev_open(__u16 dev) |
| 490 | { |
| 491 | struct hci_dev *hdev; |
| 492 | int ret = 0; |
| 493 | |
| 494 | if (!(hdev = hci_dev_get(dev))) |
| 495 | return -ENODEV; |
| 496 | |
| 497 | BT_DBG("%s %p", hdev->name, hdev); |
| 498 | |
| 499 | hci_req_lock(hdev); |
| 500 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 501 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 502 | ret = -ERFKILL; |
| 503 | goto done; |
| 504 | } |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 507 | ret = -EALREADY; |
| 508 | goto done; |
| 509 | } |
| 510 | |
| 511 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 512 | set_bit(HCI_RAW, &hdev->flags); |
| 513 | |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 514 | /* Treat all non BR/EDR controllers as raw devices for now */ |
| 515 | if (hdev->dev_type != HCI_BREDR) |
| 516 | set_bit(HCI_RAW, &hdev->flags); |
| 517 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | if (hdev->open(hdev)) { |
| 519 | ret = -EIO; |
| 520 | goto done; |
| 521 | } |
| 522 | |
| 523 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 524 | atomic_set(&hdev->cmd_cnt, 1); |
| 525 | set_bit(HCI_INIT, &hdev->flags); |
| 526 | |
| 527 | //__hci_request(hdev, hci_reset_req, 0, HZ); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 528 | ret = __hci_request(hdev, hci_init_req, 0, |
| 529 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | clear_bit(HCI_INIT, &hdev->flags); |
| 532 | } |
| 533 | |
| 534 | if (!ret) { |
| 535 | hci_dev_hold(hdev); |
| 536 | set_bit(HCI_UP, &hdev->flags); |
| 537 | hci_notify(hdev, HCI_DEV_UP); |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 538 | if (!test_bit(HCI_SETUP, &hdev->flags)) |
| 539 | mgmt_powered(hdev->id, 1); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 540 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | /* Init failed, cleanup */ |
| 542 | tasklet_kill(&hdev->rx_task); |
| 543 | tasklet_kill(&hdev->tx_task); |
| 544 | tasklet_kill(&hdev->cmd_task); |
| 545 | |
| 546 | skb_queue_purge(&hdev->cmd_q); |
| 547 | skb_queue_purge(&hdev->rx_q); |
| 548 | |
| 549 | if (hdev->flush) |
| 550 | hdev->flush(hdev); |
| 551 | |
| 552 | if (hdev->sent_cmd) { |
| 553 | kfree_skb(hdev->sent_cmd); |
| 554 | hdev->sent_cmd = NULL; |
| 555 | } |
| 556 | |
| 557 | hdev->close(hdev); |
| 558 | hdev->flags = 0; |
| 559 | } |
| 560 | |
| 561 | done: |
| 562 | hci_req_unlock(hdev); |
| 563 | hci_dev_put(hdev); |
| 564 | return ret; |
| 565 | } |
| 566 | |
| 567 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 568 | { |
| 569 | BT_DBG("%s %p", hdev->name, hdev); |
| 570 | |
| 571 | hci_req_cancel(hdev, ENODEV); |
| 572 | hci_req_lock(hdev); |
| 573 | |
| 574 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
| 575 | hci_req_unlock(hdev); |
| 576 | return 0; |
| 577 | } |
| 578 | |
| 579 | /* Kill RX and TX tasks */ |
| 580 | tasklet_kill(&hdev->rx_task); |
| 581 | tasklet_kill(&hdev->tx_task); |
| 582 | |
| 583 | hci_dev_lock_bh(hdev); |
| 584 | inquiry_cache_flush(hdev); |
| 585 | hci_conn_hash_flush(hdev); |
| 586 | hci_dev_unlock_bh(hdev); |
| 587 | |
| 588 | hci_notify(hdev, HCI_DEV_DOWN); |
| 589 | |
| 590 | if (hdev->flush) |
| 591 | hdev->flush(hdev); |
| 592 | |
| 593 | /* Reset device */ |
| 594 | skb_queue_purge(&hdev->cmd_q); |
| 595 | atomic_set(&hdev->cmd_cnt, 1); |
| 596 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 597 | set_bit(HCI_INIT, &hdev->flags); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 598 | __hci_request(hdev, hci_reset_req, 0, |
| 599 | msecs_to_jiffies(250)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | clear_bit(HCI_INIT, &hdev->flags); |
| 601 | } |
| 602 | |
| 603 | /* Kill cmd task */ |
| 604 | tasklet_kill(&hdev->cmd_task); |
| 605 | |
| 606 | /* Drop queues */ |
| 607 | skb_queue_purge(&hdev->rx_q); |
| 608 | skb_queue_purge(&hdev->cmd_q); |
| 609 | skb_queue_purge(&hdev->raw_q); |
| 610 | |
| 611 | /* Drop last sent command */ |
| 612 | if (hdev->sent_cmd) { |
| 613 | kfree_skb(hdev->sent_cmd); |
| 614 | hdev->sent_cmd = NULL; |
| 615 | } |
| 616 | |
| 617 | /* After this point our queues are empty |
| 618 | * and no tasks are scheduled. */ |
| 619 | hdev->close(hdev); |
| 620 | |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 621 | mgmt_powered(hdev->id, 0); |
| 622 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | /* Clear flags */ |
| 624 | hdev->flags = 0; |
| 625 | |
| 626 | hci_req_unlock(hdev); |
| 627 | |
| 628 | hci_dev_put(hdev); |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | int hci_dev_close(__u16 dev) |
| 633 | { |
| 634 | struct hci_dev *hdev; |
| 635 | int err; |
| 636 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 637 | hdev = hci_dev_get(dev); |
| 638 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | return -ENODEV; |
| 640 | err = hci_dev_do_close(hdev); |
| 641 | hci_dev_put(hdev); |
| 642 | return err; |
| 643 | } |
| 644 | |
| 645 | int hci_dev_reset(__u16 dev) |
| 646 | { |
| 647 | struct hci_dev *hdev; |
| 648 | int ret = 0; |
| 649 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 650 | hdev = hci_dev_get(dev); |
| 651 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | return -ENODEV; |
| 653 | |
| 654 | hci_req_lock(hdev); |
| 655 | tasklet_disable(&hdev->tx_task); |
| 656 | |
| 657 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 658 | goto done; |
| 659 | |
| 660 | /* Drop queues */ |
| 661 | skb_queue_purge(&hdev->rx_q); |
| 662 | skb_queue_purge(&hdev->cmd_q); |
| 663 | |
| 664 | hci_dev_lock_bh(hdev); |
| 665 | inquiry_cache_flush(hdev); |
| 666 | hci_conn_hash_flush(hdev); |
| 667 | hci_dev_unlock_bh(hdev); |
| 668 | |
| 669 | if (hdev->flush) |
| 670 | hdev->flush(hdev); |
| 671 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 672 | atomic_set(&hdev->cmd_cnt, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; |
| 674 | |
| 675 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 676 | ret = __hci_request(hdev, hci_reset_req, 0, |
| 677 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
| 679 | done: |
| 680 | tasklet_enable(&hdev->tx_task); |
| 681 | hci_req_unlock(hdev); |
| 682 | hci_dev_put(hdev); |
| 683 | return ret; |
| 684 | } |
| 685 | |
| 686 | int hci_dev_reset_stat(__u16 dev) |
| 687 | { |
| 688 | struct hci_dev *hdev; |
| 689 | int ret = 0; |
| 690 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 691 | hdev = hci_dev_get(dev); |
| 692 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return -ENODEV; |
| 694 | |
| 695 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 696 | |
| 697 | hci_dev_put(hdev); |
| 698 | |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 703 | { |
| 704 | struct hci_dev *hdev; |
| 705 | struct hci_dev_req dr; |
| 706 | int err = 0; |
| 707 | |
| 708 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 709 | return -EFAULT; |
| 710 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 711 | hdev = hci_dev_get(dr.dev_id); |
| 712 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | return -ENODEV; |
| 714 | |
| 715 | switch (cmd) { |
| 716 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 717 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 718 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | break; |
| 720 | |
| 721 | case HCISETENCRYPT: |
| 722 | if (!lmp_encrypt_capable(hdev)) { |
| 723 | err = -EOPNOTSUPP; |
| 724 | break; |
| 725 | } |
| 726 | |
| 727 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 728 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 729 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 730 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | if (err) |
| 732 | break; |
| 733 | } |
| 734 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 735 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
| 736 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | break; |
| 738 | |
| 739 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 740 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
| 741 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | break; |
| 743 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 744 | case HCISETLINKPOL: |
| 745 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
| 746 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
| 747 | break; |
| 748 | |
| 749 | case HCISETLINKMODE: |
| 750 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 751 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 752 | break; |
| 753 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | case HCISETPTYPE: |
| 755 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 756 | break; |
| 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 759 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 760 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | break; |
| 762 | |
| 763 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 764 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 765 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | break; |
| 767 | |
| 768 | default: |
| 769 | err = -EINVAL; |
| 770 | break; |
| 771 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | hci_dev_put(hdev); |
| 774 | return err; |
| 775 | } |
| 776 | |
| 777 | int hci_get_dev_list(void __user *arg) |
| 778 | { |
| 779 | struct hci_dev_list_req *dl; |
| 780 | struct hci_dev_req *dr; |
| 781 | struct list_head *p; |
| 782 | int n = 0, size, err; |
| 783 | __u16 dev_num; |
| 784 | |
| 785 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 786 | return -EFAULT; |
| 787 | |
| 788 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 789 | return -EINVAL; |
| 790 | |
| 791 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 792 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 793 | dl = kzalloc(size, GFP_KERNEL); |
| 794 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | return -ENOMEM; |
| 796 | |
| 797 | dr = dl->dev_req; |
| 798 | |
| 799 | read_lock_bh(&hci_dev_list_lock); |
| 800 | list_for_each(p, &hci_dev_list) { |
| 801 | struct hci_dev *hdev; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame^] | 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | hdev = list_entry(p, struct hci_dev, list); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame^] | 804 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 805 | hci_del_off_timer(hdev); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame^] | 806 | |
| 807 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 808 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | (dr + n)->dev_id = hdev->id; |
| 811 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame^] | 812 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | if (++n >= dev_num) |
| 814 | break; |
| 815 | } |
| 816 | read_unlock_bh(&hci_dev_list_lock); |
| 817 | |
| 818 | dl->dev_num = n; |
| 819 | size = sizeof(*dl) + n * sizeof(*dr); |
| 820 | |
| 821 | err = copy_to_user(arg, dl, size); |
| 822 | kfree(dl); |
| 823 | |
| 824 | return err ? -EFAULT : 0; |
| 825 | } |
| 826 | |
| 827 | int hci_get_dev_info(void __user *arg) |
| 828 | { |
| 829 | struct hci_dev *hdev; |
| 830 | struct hci_dev_info di; |
| 831 | int err = 0; |
| 832 | |
| 833 | if (copy_from_user(&di, arg, sizeof(di))) |
| 834 | return -EFAULT; |
| 835 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 836 | hdev = hci_dev_get(di.dev_id); |
| 837 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | return -ENODEV; |
| 839 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 840 | hci_del_off_timer(hdev); |
| 841 | |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame^] | 842 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 843 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | strcpy(di.name, hdev->name); |
| 846 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 847 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | di.flags = hdev->flags; |
| 849 | di.pkt_type = hdev->pkt_type; |
| 850 | di.acl_mtu = hdev->acl_mtu; |
| 851 | di.acl_pkts = hdev->acl_pkts; |
| 852 | di.sco_mtu = hdev->sco_mtu; |
| 853 | di.sco_pkts = hdev->sco_pkts; |
| 854 | di.link_policy = hdev->link_policy; |
| 855 | di.link_mode = hdev->link_mode; |
| 856 | |
| 857 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 858 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 859 | |
| 860 | if (copy_to_user(arg, &di, sizeof(di))) |
| 861 | err = -EFAULT; |
| 862 | |
| 863 | hci_dev_put(hdev); |
| 864 | |
| 865 | return err; |
| 866 | } |
| 867 | |
| 868 | /* ---- Interface to HCI drivers ---- */ |
| 869 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 870 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 871 | { |
| 872 | struct hci_dev *hdev = data; |
| 873 | |
| 874 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 875 | |
| 876 | if (!blocked) |
| 877 | return 0; |
| 878 | |
| 879 | hci_dev_do_close(hdev); |
| 880 | |
| 881 | return 0; |
| 882 | } |
| 883 | |
| 884 | static const struct rfkill_ops hci_rfkill_ops = { |
| 885 | .set_block = hci_rfkill_set_block, |
| 886 | }; |
| 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | /* Alloc HCI device */ |
| 889 | struct hci_dev *hci_alloc_dev(void) |
| 890 | { |
| 891 | struct hci_dev *hdev; |
| 892 | |
Marcel Holtmann | 25ea6db | 2006-07-06 15:40:09 +0200 | [diff] [blame] | 893 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | if (!hdev) |
| 895 | return NULL; |
| 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | skb_queue_head_init(&hdev->driver_init); |
| 898 | |
| 899 | return hdev; |
| 900 | } |
| 901 | EXPORT_SYMBOL(hci_alloc_dev); |
| 902 | |
| 903 | /* Free HCI device */ |
| 904 | void hci_free_dev(struct hci_dev *hdev) |
| 905 | { |
| 906 | skb_queue_purge(&hdev->driver_init); |
| 907 | |
Marcel Holtmann | a91f2e3 | 2006-07-03 10:02:41 +0200 | [diff] [blame] | 908 | /* will free via device release */ |
| 909 | put_device(&hdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | } |
| 911 | EXPORT_SYMBOL(hci_free_dev); |
| 912 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 913 | static void hci_power_on(struct work_struct *work) |
| 914 | { |
| 915 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
| 916 | |
| 917 | BT_DBG("%s", hdev->name); |
| 918 | |
| 919 | if (hci_dev_open(hdev->id) < 0) |
| 920 | return; |
| 921 | |
| 922 | if (test_bit(HCI_AUTO_OFF, &hdev->flags)) |
| 923 | mod_timer(&hdev->off_timer, |
| 924 | jiffies + msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
| 925 | |
| 926 | if (test_and_clear_bit(HCI_SETUP, &hdev->flags)) |
| 927 | mgmt_index_added(hdev->id); |
| 928 | } |
| 929 | |
| 930 | static void hci_power_off(struct work_struct *work) |
| 931 | { |
| 932 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_off); |
| 933 | |
| 934 | BT_DBG("%s", hdev->name); |
| 935 | |
| 936 | hci_dev_close(hdev->id); |
| 937 | } |
| 938 | |
| 939 | static void hci_auto_off(unsigned long data) |
| 940 | { |
| 941 | struct hci_dev *hdev = (struct hci_dev *) data; |
| 942 | |
| 943 | BT_DBG("%s", hdev->name); |
| 944 | |
| 945 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 946 | |
| 947 | queue_work(hdev->workqueue, &hdev->power_off); |
| 948 | } |
| 949 | |
| 950 | void hci_del_off_timer(struct hci_dev *hdev) |
| 951 | { |
| 952 | BT_DBG("%s", hdev->name); |
| 953 | |
| 954 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 955 | del_timer(&hdev->off_timer); |
| 956 | } |
| 957 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | /* Register HCI device */ |
| 959 | int hci_register_dev(struct hci_dev *hdev) |
| 960 | { |
| 961 | struct list_head *head = &hci_dev_list, *p; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 962 | int i, id = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 964 | BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, |
| 965 | hdev->bus, hdev->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | |
| 967 | if (!hdev->open || !hdev->close || !hdev->destruct) |
| 968 | return -EINVAL; |
| 969 | |
| 970 | write_lock_bh(&hci_dev_list_lock); |
| 971 | |
| 972 | /* Find first available device id */ |
| 973 | list_for_each(p, &hci_dev_list) { |
| 974 | if (list_entry(p, struct hci_dev, list)->id != id) |
| 975 | break; |
| 976 | head = p; id++; |
| 977 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 978 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | sprintf(hdev->name, "hci%d", id); |
| 980 | hdev->id = id; |
| 981 | list_add(&hdev->list, head); |
| 982 | |
| 983 | atomic_set(&hdev->refcnt, 1); |
| 984 | spin_lock_init(&hdev->lock); |
| 985 | |
| 986 | hdev->flags = 0; |
| 987 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 988 | hdev->esco_type = (ESCO_HV1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | hdev->link_mode = (HCI_LM_ACCEPT); |
| 990 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 991 | hdev->idle_timeout = 0; |
| 992 | hdev->sniff_max_interval = 800; |
| 993 | hdev->sniff_min_interval = 80; |
| 994 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 995 | tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); |
| 997 | tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); |
| 998 | |
| 999 | skb_queue_head_init(&hdev->rx_q); |
| 1000 | skb_queue_head_init(&hdev->cmd_q); |
| 1001 | skb_queue_head_init(&hdev->raw_q); |
| 1002 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1003 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1004 | hdev->reassembly[i] = NULL; |
| 1005 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | init_waitqueue_head(&hdev->req_wait_q); |
Thomas Gleixner | a6a67ef | 2009-07-26 08:18:19 +0000 | [diff] [blame] | 1007 | mutex_init(&hdev->req_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | |
| 1009 | inquiry_cache_init(hdev); |
| 1010 | |
| 1011 | hci_conn_hash_init(hdev); |
| 1012 | |
David Miller | ea4bd8b | 2010-07-30 21:54:49 -0700 | [diff] [blame] | 1013 | INIT_LIST_HEAD(&hdev->blacklist); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 1014 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1015 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1016 | INIT_WORK(&hdev->power_off, hci_power_off); |
| 1017 | setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev); |
| 1018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 1020 | |
| 1021 | atomic_set(&hdev->promisc, 0); |
| 1022 | |
| 1023 | write_unlock_bh(&hci_dev_list_lock); |
| 1024 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1025 | hdev->workqueue = create_singlethread_workqueue(hdev->name); |
| 1026 | if (!hdev->workqueue) |
| 1027 | goto nomem; |
| 1028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | hci_register_sysfs(hdev); |
| 1030 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1031 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
| 1032 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); |
| 1033 | if (hdev->rfkill) { |
| 1034 | if (rfkill_register(hdev->rfkill) < 0) { |
| 1035 | rfkill_destroy(hdev->rfkill); |
| 1036 | hdev->rfkill = NULL; |
| 1037 | } |
| 1038 | } |
| 1039 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1040 | set_bit(HCI_AUTO_OFF, &hdev->flags); |
| 1041 | set_bit(HCI_SETUP, &hdev->flags); |
| 1042 | queue_work(hdev->workqueue, &hdev->power_on); |
| 1043 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | hci_notify(hdev, HCI_DEV_REG); |
| 1045 | |
| 1046 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1047 | |
| 1048 | nomem: |
| 1049 | write_lock_bh(&hci_dev_list_lock); |
| 1050 | list_del(&hdev->list); |
| 1051 | write_unlock_bh(&hci_dev_list_lock); |
| 1052 | |
| 1053 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | } |
| 1055 | EXPORT_SYMBOL(hci_register_dev); |
| 1056 | |
| 1057 | /* Unregister HCI device */ |
| 1058 | int hci_unregister_dev(struct hci_dev *hdev) |
| 1059 | { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1060 | int i; |
| 1061 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1062 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | write_lock_bh(&hci_dev_list_lock); |
| 1065 | list_del(&hdev->list); |
| 1066 | write_unlock_bh(&hci_dev_list_lock); |
| 1067 | |
| 1068 | hci_dev_do_close(hdev); |
| 1069 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1070 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1071 | kfree_skb(hdev->reassembly[i]); |
| 1072 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1073 | if (!test_bit(HCI_INIT, &hdev->flags) && |
| 1074 | !test_bit(HCI_SETUP, &hdev->flags)) |
| 1075 | mgmt_index_removed(hdev->id); |
| 1076 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1078 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1079 | if (hdev->rfkill) { |
| 1080 | rfkill_unregister(hdev->rfkill); |
| 1081 | rfkill_destroy(hdev->rfkill); |
| 1082 | } |
| 1083 | |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1084 | hci_unregister_sysfs(hdev); |
| 1085 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1086 | destroy_workqueue(hdev->workqueue); |
| 1087 | |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1088 | hci_dev_lock_bh(hdev); |
| 1089 | hci_blacklist_clear(hdev); |
| 1090 | hci_dev_unlock_bh(hdev); |
| 1091 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | __hci_dev_put(hdev); |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | return 0; |
| 1095 | } |
| 1096 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1097 | |
| 1098 | /* Suspend HCI device */ |
| 1099 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1100 | { |
| 1101 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1102 | return 0; |
| 1103 | } |
| 1104 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1105 | |
| 1106 | /* Resume HCI device */ |
| 1107 | int hci_resume_dev(struct hci_dev *hdev) |
| 1108 | { |
| 1109 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1110 | return 0; |
| 1111 | } |
| 1112 | EXPORT_SYMBOL(hci_resume_dev); |
| 1113 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1114 | /* Receive frame from HCI drivers */ |
| 1115 | int hci_recv_frame(struct sk_buff *skb) |
| 1116 | { |
| 1117 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1118 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
| 1119 | && !test_bit(HCI_INIT, &hdev->flags))) { |
| 1120 | kfree_skb(skb); |
| 1121 | return -ENXIO; |
| 1122 | } |
| 1123 | |
| 1124 | /* Incomming skb */ |
| 1125 | bt_cb(skb)->incoming = 1; |
| 1126 | |
| 1127 | /* Time stamp */ |
| 1128 | __net_timestamp(skb); |
| 1129 | |
| 1130 | /* Queue frame for rx task */ |
| 1131 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1132 | tasklet_schedule(&hdev->rx_task); |
| 1133 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1134 | return 0; |
| 1135 | } |
| 1136 | EXPORT_SYMBOL(hci_recv_frame); |
| 1137 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1138 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
| 1139 | int count, __u8 index, gfp_t gfp_mask) |
| 1140 | { |
| 1141 | int len = 0; |
| 1142 | int hlen = 0; |
| 1143 | int remain = count; |
| 1144 | struct sk_buff *skb; |
| 1145 | struct bt_skb_cb *scb; |
| 1146 | |
| 1147 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
| 1148 | index >= NUM_REASSEMBLY) |
| 1149 | return -EILSEQ; |
| 1150 | |
| 1151 | skb = hdev->reassembly[index]; |
| 1152 | |
| 1153 | if (!skb) { |
| 1154 | switch (type) { |
| 1155 | case HCI_ACLDATA_PKT: |
| 1156 | len = HCI_MAX_FRAME_SIZE; |
| 1157 | hlen = HCI_ACL_HDR_SIZE; |
| 1158 | break; |
| 1159 | case HCI_EVENT_PKT: |
| 1160 | len = HCI_MAX_EVENT_SIZE; |
| 1161 | hlen = HCI_EVENT_HDR_SIZE; |
| 1162 | break; |
| 1163 | case HCI_SCODATA_PKT: |
| 1164 | len = HCI_MAX_SCO_SIZE; |
| 1165 | hlen = HCI_SCO_HDR_SIZE; |
| 1166 | break; |
| 1167 | } |
| 1168 | |
| 1169 | skb = bt_skb_alloc(len, gfp_mask); |
| 1170 | if (!skb) |
| 1171 | return -ENOMEM; |
| 1172 | |
| 1173 | scb = (void *) skb->cb; |
| 1174 | scb->expect = hlen; |
| 1175 | scb->pkt_type = type; |
| 1176 | |
| 1177 | skb->dev = (void *) hdev; |
| 1178 | hdev->reassembly[index] = skb; |
| 1179 | } |
| 1180 | |
| 1181 | while (count) { |
| 1182 | scb = (void *) skb->cb; |
| 1183 | len = min(scb->expect, (__u16)count); |
| 1184 | |
| 1185 | memcpy(skb_put(skb, len), data, len); |
| 1186 | |
| 1187 | count -= len; |
| 1188 | data += len; |
| 1189 | scb->expect -= len; |
| 1190 | remain = count; |
| 1191 | |
| 1192 | switch (type) { |
| 1193 | case HCI_EVENT_PKT: |
| 1194 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1195 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1196 | scb->expect = h->plen; |
| 1197 | |
| 1198 | if (skb_tailroom(skb) < scb->expect) { |
| 1199 | kfree_skb(skb); |
| 1200 | hdev->reassembly[index] = NULL; |
| 1201 | return -ENOMEM; |
| 1202 | } |
| 1203 | } |
| 1204 | break; |
| 1205 | |
| 1206 | case HCI_ACLDATA_PKT: |
| 1207 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1208 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1209 | scb->expect = __le16_to_cpu(h->dlen); |
| 1210 | |
| 1211 | if (skb_tailroom(skb) < scb->expect) { |
| 1212 | kfree_skb(skb); |
| 1213 | hdev->reassembly[index] = NULL; |
| 1214 | return -ENOMEM; |
| 1215 | } |
| 1216 | } |
| 1217 | break; |
| 1218 | |
| 1219 | case HCI_SCODATA_PKT: |
| 1220 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1221 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1222 | scb->expect = h->dlen; |
| 1223 | |
| 1224 | if (skb_tailroom(skb) < scb->expect) { |
| 1225 | kfree_skb(skb); |
| 1226 | hdev->reassembly[index] = NULL; |
| 1227 | return -ENOMEM; |
| 1228 | } |
| 1229 | } |
| 1230 | break; |
| 1231 | } |
| 1232 | |
| 1233 | if (scb->expect == 0) { |
| 1234 | /* Complete frame */ |
| 1235 | |
| 1236 | bt_cb(skb)->pkt_type = type; |
| 1237 | hci_recv_frame(skb); |
| 1238 | |
| 1239 | hdev->reassembly[index] = NULL; |
| 1240 | return remain; |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | return remain; |
| 1245 | } |
| 1246 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1247 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1248 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1249 | int rem = 0; |
| 1250 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1251 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1252 | return -EILSEQ; |
| 1253 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1254 | while (count) { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1255 | rem = hci_reassembly(hdev, type, data, count, |
| 1256 | type - 1, GFP_ATOMIC); |
| 1257 | if (rem < 0) |
| 1258 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1259 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1260 | data += (count - rem); |
| 1261 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1262 | }; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1263 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1264 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1265 | } |
| 1266 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1267 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1268 | #define STREAM_REASSEMBLY 0 |
| 1269 | |
| 1270 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 1271 | { |
| 1272 | int type; |
| 1273 | int rem = 0; |
| 1274 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1275 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1276 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 1277 | |
| 1278 | if (!skb) { |
| 1279 | struct { char type; } *pkt; |
| 1280 | |
| 1281 | /* Start of the frame */ |
| 1282 | pkt = data; |
| 1283 | type = pkt->type; |
| 1284 | |
| 1285 | data++; |
| 1286 | count--; |
| 1287 | } else |
| 1288 | type = bt_cb(skb)->pkt_type; |
| 1289 | |
| 1290 | rem = hci_reassembly(hdev, type, data, |
| 1291 | count, STREAM_REASSEMBLY, GFP_ATOMIC); |
| 1292 | if (rem < 0) |
| 1293 | return rem; |
| 1294 | |
| 1295 | data += (count - rem); |
| 1296 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1297 | }; |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1298 | |
| 1299 | return rem; |
| 1300 | } |
| 1301 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 1302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | /* ---- Interface to upper protocols ---- */ |
| 1304 | |
| 1305 | /* Register/Unregister protocols. |
| 1306 | * hci_task_lock is used to ensure that no tasks are running. */ |
| 1307 | int hci_register_proto(struct hci_proto *hp) |
| 1308 | { |
| 1309 | int err = 0; |
| 1310 | |
| 1311 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1312 | |
| 1313 | if (hp->id >= HCI_MAX_PROTO) |
| 1314 | return -EINVAL; |
| 1315 | |
| 1316 | write_lock_bh(&hci_task_lock); |
| 1317 | |
| 1318 | if (!hci_proto[hp->id]) |
| 1319 | hci_proto[hp->id] = hp; |
| 1320 | else |
| 1321 | err = -EEXIST; |
| 1322 | |
| 1323 | write_unlock_bh(&hci_task_lock); |
| 1324 | |
| 1325 | return err; |
| 1326 | } |
| 1327 | EXPORT_SYMBOL(hci_register_proto); |
| 1328 | |
| 1329 | int hci_unregister_proto(struct hci_proto *hp) |
| 1330 | { |
| 1331 | int err = 0; |
| 1332 | |
| 1333 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1334 | |
| 1335 | if (hp->id >= HCI_MAX_PROTO) |
| 1336 | return -EINVAL; |
| 1337 | |
| 1338 | write_lock_bh(&hci_task_lock); |
| 1339 | |
| 1340 | if (hci_proto[hp->id]) |
| 1341 | hci_proto[hp->id] = NULL; |
| 1342 | else |
| 1343 | err = -ENOENT; |
| 1344 | |
| 1345 | write_unlock_bh(&hci_task_lock); |
| 1346 | |
| 1347 | return err; |
| 1348 | } |
| 1349 | EXPORT_SYMBOL(hci_unregister_proto); |
| 1350 | |
| 1351 | int hci_register_cb(struct hci_cb *cb) |
| 1352 | { |
| 1353 | BT_DBG("%p name %s", cb, cb->name); |
| 1354 | |
| 1355 | write_lock_bh(&hci_cb_list_lock); |
| 1356 | list_add(&cb->list, &hci_cb_list); |
| 1357 | write_unlock_bh(&hci_cb_list_lock); |
| 1358 | |
| 1359 | return 0; |
| 1360 | } |
| 1361 | EXPORT_SYMBOL(hci_register_cb); |
| 1362 | |
| 1363 | int hci_unregister_cb(struct hci_cb *cb) |
| 1364 | { |
| 1365 | BT_DBG("%p name %s", cb, cb->name); |
| 1366 | |
| 1367 | write_lock_bh(&hci_cb_list_lock); |
| 1368 | list_del(&cb->list); |
| 1369 | write_unlock_bh(&hci_cb_list_lock); |
| 1370 | |
| 1371 | return 0; |
| 1372 | } |
| 1373 | EXPORT_SYMBOL(hci_unregister_cb); |
| 1374 | |
| 1375 | static int hci_send_frame(struct sk_buff *skb) |
| 1376 | { |
| 1377 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1378 | |
| 1379 | if (!hdev) { |
| 1380 | kfree_skb(skb); |
| 1381 | return -ENODEV; |
| 1382 | } |
| 1383 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1384 | 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] | 1385 | |
| 1386 | if (atomic_read(&hdev->promisc)) { |
| 1387 | /* Time stamp */ |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1388 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 1390 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | } |
| 1392 | |
| 1393 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 1394 | skb_orphan(skb); |
| 1395 | |
| 1396 | return hdev->send(skb); |
| 1397 | } |
| 1398 | |
| 1399 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1400 | 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] | 1401 | { |
| 1402 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 1403 | struct hci_command_hdr *hdr; |
| 1404 | struct sk_buff *skb; |
| 1405 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1406 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | |
| 1408 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 1409 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1410 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | return -ENOMEM; |
| 1412 | } |
| 1413 | |
| 1414 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1415 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | hdr->plen = plen; |
| 1417 | |
| 1418 | if (plen) |
| 1419 | memcpy(skb_put(skb, plen), param, plen); |
| 1420 | |
| 1421 | BT_DBG("skb len %d", skb->len); |
| 1422 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1423 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1427 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | |
| 1429 | return 0; |
| 1430 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | |
| 1432 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1433 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
| 1435 | struct hci_command_hdr *hdr; |
| 1436 | |
| 1437 | if (!hdev->sent_cmd) |
| 1438 | return NULL; |
| 1439 | |
| 1440 | hdr = (void *) hdev->sent_cmd->data; |
| 1441 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1442 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | return NULL; |
| 1444 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1445 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | |
| 1447 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 1448 | } |
| 1449 | |
| 1450 | /* Send ACL data */ |
| 1451 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 1452 | { |
| 1453 | struct hci_acl_hdr *hdr; |
| 1454 | int len = skb->len; |
| 1455 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 1456 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 1457 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 1458 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1459 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 1460 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | } |
| 1462 | |
Gustavo F. Padovan | 9a9c6a3 | 2010-05-01 16:15:43 -0300 | [diff] [blame] | 1463 | void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | { |
| 1465 | struct hci_dev *hdev = conn->hdev; |
| 1466 | struct sk_buff *list; |
| 1467 | |
| 1468 | BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); |
| 1469 | |
| 1470 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1471 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1472 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1474 | list = skb_shinfo(skb)->frag_list; |
| 1475 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | /* Non fragmented */ |
| 1477 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 1478 | |
| 1479 | skb_queue_tail(&conn->data_q, skb); |
| 1480 | } else { |
| 1481 | /* Fragmented */ |
| 1482 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 1483 | |
| 1484 | skb_shinfo(skb)->frag_list = NULL; |
| 1485 | |
| 1486 | /* Queue all fragments atomically */ |
| 1487 | spin_lock_bh(&conn->data_q.lock); |
| 1488 | |
| 1489 | __skb_queue_tail(&conn->data_q, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1490 | |
| 1491 | flags &= ~ACL_START; |
| 1492 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | do { |
| 1494 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1497 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1498 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | |
| 1500 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 1501 | |
| 1502 | __skb_queue_tail(&conn->data_q, skb); |
| 1503 | } while (list); |
| 1504 | |
| 1505 | spin_unlock_bh(&conn->data_q.lock); |
| 1506 | } |
| 1507 | |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1508 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | } |
| 1510 | EXPORT_SYMBOL(hci_send_acl); |
| 1511 | |
| 1512 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 1513 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | { |
| 1515 | struct hci_dev *hdev = conn->hdev; |
| 1516 | struct hci_sco_hdr hdr; |
| 1517 | |
| 1518 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 1519 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1520 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | hdr.dlen = skb->len; |
| 1522 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 1523 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 1524 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 1525 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | |
| 1527 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1528 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | skb_queue_tail(&conn->data_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1531 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | } |
| 1533 | EXPORT_SYMBOL(hci_send_sco); |
| 1534 | |
| 1535 | /* ---- HCI TX task (outgoing data) ---- */ |
| 1536 | |
| 1537 | /* HCI Connection scheduler */ |
| 1538 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) |
| 1539 | { |
| 1540 | struct hci_conn_hash *h = &hdev->conn_hash; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 1541 | struct hci_conn *conn = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | int num = 0, min = ~0; |
| 1543 | struct list_head *p; |
| 1544 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1545 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | * added and removed with TX task disabled. */ |
| 1547 | list_for_each(p, &h->list) { |
| 1548 | struct hci_conn *c; |
| 1549 | c = list_entry(p, struct hci_conn, list); |
| 1550 | |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 1551 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 1553 | |
| 1554 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 1555 | continue; |
| 1556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | num++; |
| 1558 | |
| 1559 | if (c->sent < min) { |
| 1560 | min = c->sent; |
| 1561 | conn = c; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | if (conn) { |
| 1566 | int cnt = (type == ACL_LINK ? hdev->acl_cnt : hdev->sco_cnt); |
| 1567 | int q = cnt / num; |
| 1568 | *quote = q ? q : 1; |
| 1569 | } else |
| 1570 | *quote = 0; |
| 1571 | |
| 1572 | BT_DBG("conn %p quote %d", conn, *quote); |
| 1573 | return conn; |
| 1574 | } |
| 1575 | |
| 1576 | static inline void hci_acl_tx_to(struct hci_dev *hdev) |
| 1577 | { |
| 1578 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 1579 | struct list_head *p; |
| 1580 | struct hci_conn *c; |
| 1581 | |
| 1582 | BT_ERR("%s ACL tx timeout", hdev->name); |
| 1583 | |
| 1584 | /* Kill stalled connections */ |
| 1585 | list_for_each(p, &h->list) { |
| 1586 | c = list_entry(p, struct hci_conn, list); |
| 1587 | if (c->type == ACL_LINK && c->sent) { |
| 1588 | BT_ERR("%s killing stalled ACL connection %s", |
| 1589 | hdev->name, batostr(&c->dst)); |
| 1590 | hci_acl_disconn(c, 0x13); |
| 1591 | } |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | static inline void hci_sched_acl(struct hci_dev *hdev) |
| 1596 | { |
| 1597 | struct hci_conn *conn; |
| 1598 | struct sk_buff *skb; |
| 1599 | int quote; |
| 1600 | |
| 1601 | BT_DBG("%s", hdev->name); |
| 1602 | |
| 1603 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 1604 | /* ACL tx timeout must be longer than maximum |
| 1605 | * link supervision timeout (40.9 seconds) */ |
S.Çağlar Onur | 82453021 | 2008-02-17 23:25:57 -0800 | [diff] [blame] | 1606 | if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | hci_acl_tx_to(hdev); |
| 1608 | } |
| 1609 | |
| 1610 | while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { |
| 1611 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 1612 | BT_DBG("skb %p len %d", skb, skb->len); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1613 | |
| 1614 | hci_conn_enter_active_mode(conn); |
| 1615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | hci_send_frame(skb); |
| 1617 | hdev->acl_last_tx = jiffies; |
| 1618 | |
| 1619 | hdev->acl_cnt--; |
| 1620 | conn->sent++; |
| 1621 | } |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | /* Schedule SCO */ |
| 1626 | static inline void hci_sched_sco(struct hci_dev *hdev) |
| 1627 | { |
| 1628 | struct hci_conn *conn; |
| 1629 | struct sk_buff *skb; |
| 1630 | int quote; |
| 1631 | |
| 1632 | BT_DBG("%s", hdev->name); |
| 1633 | |
| 1634 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 1635 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 1636 | BT_DBG("skb %p len %d", skb, skb->len); |
| 1637 | hci_send_frame(skb); |
| 1638 | |
| 1639 | conn->sent++; |
| 1640 | if (conn->sent == ~0) |
| 1641 | conn->sent = 0; |
| 1642 | } |
| 1643 | } |
| 1644 | } |
| 1645 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 1646 | static inline void hci_sched_esco(struct hci_dev *hdev) |
| 1647 | { |
| 1648 | struct hci_conn *conn; |
| 1649 | struct sk_buff *skb; |
| 1650 | int quote; |
| 1651 | |
| 1652 | BT_DBG("%s", hdev->name); |
| 1653 | |
| 1654 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
| 1655 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 1656 | BT_DBG("skb %p len %d", skb, skb->len); |
| 1657 | hci_send_frame(skb); |
| 1658 | |
| 1659 | conn->sent++; |
| 1660 | if (conn->sent == ~0) |
| 1661 | conn->sent = 0; |
| 1662 | } |
| 1663 | } |
| 1664 | } |
| 1665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | static void hci_tx_task(unsigned long arg) |
| 1667 | { |
| 1668 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 1669 | struct sk_buff *skb; |
| 1670 | |
| 1671 | read_lock(&hci_task_lock); |
| 1672 | |
| 1673 | BT_DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt); |
| 1674 | |
| 1675 | /* Schedule queues and send stuff to HCI driver */ |
| 1676 | |
| 1677 | hci_sched_acl(hdev); |
| 1678 | |
| 1679 | hci_sched_sco(hdev); |
| 1680 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 1681 | hci_sched_esco(hdev); |
| 1682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | /* Send next queued raw (unknown type) packet */ |
| 1684 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 1685 | hci_send_frame(skb); |
| 1686 | |
| 1687 | read_unlock(&hci_task_lock); |
| 1688 | } |
| 1689 | |
| 1690 | /* ----- HCI RX task (incoming data proccessing) ----- */ |
| 1691 | |
| 1692 | /* ACL data packet */ |
| 1693 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 1694 | { |
| 1695 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 1696 | struct hci_conn *conn; |
| 1697 | __u16 handle, flags; |
| 1698 | |
| 1699 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 1700 | |
| 1701 | handle = __le16_to_cpu(hdr->handle); |
| 1702 | flags = hci_flags(handle); |
| 1703 | handle = hci_handle(handle); |
| 1704 | |
| 1705 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); |
| 1706 | |
| 1707 | hdev->stat.acl_rx++; |
| 1708 | |
| 1709 | hci_dev_lock(hdev); |
| 1710 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 1711 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1712 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | if (conn) { |
| 1714 | register struct hci_proto *hp; |
| 1715 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1716 | hci_conn_enter_active_mode(conn); |
| 1717 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1719 | hp = hci_proto[HCI_PROTO_L2CAP]; |
| 1720 | if (hp && hp->recv_acldata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | hp->recv_acldata(conn, skb, flags); |
| 1722 | return; |
| 1723 | } |
| 1724 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1725 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | hdev->name, handle); |
| 1727 | } |
| 1728 | |
| 1729 | kfree_skb(skb); |
| 1730 | } |
| 1731 | |
| 1732 | /* SCO data packet */ |
| 1733 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 1734 | { |
| 1735 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 1736 | struct hci_conn *conn; |
| 1737 | __u16 handle; |
| 1738 | |
| 1739 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 1740 | |
| 1741 | handle = __le16_to_cpu(hdr->handle); |
| 1742 | |
| 1743 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); |
| 1744 | |
| 1745 | hdev->stat.sco_rx++; |
| 1746 | |
| 1747 | hci_dev_lock(hdev); |
| 1748 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 1749 | hci_dev_unlock(hdev); |
| 1750 | |
| 1751 | if (conn) { |
| 1752 | register struct hci_proto *hp; |
| 1753 | |
| 1754 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1755 | hp = hci_proto[HCI_PROTO_SCO]; |
| 1756 | if (hp && hp->recv_scodata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | hp->recv_scodata(conn, skb); |
| 1758 | return; |
| 1759 | } |
| 1760 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1761 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1762 | hdev->name, handle); |
| 1763 | } |
| 1764 | |
| 1765 | kfree_skb(skb); |
| 1766 | } |
| 1767 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 1768 | static void hci_rx_task(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | { |
| 1770 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 1771 | struct sk_buff *skb; |
| 1772 | |
| 1773 | BT_DBG("%s", hdev->name); |
| 1774 | |
| 1775 | read_lock(&hci_task_lock); |
| 1776 | |
| 1777 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
| 1778 | if (atomic_read(&hdev->promisc)) { |
| 1779 | /* Send copy to the sockets */ |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 1780 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | } |
| 1782 | |
| 1783 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 1784 | kfree_skb(skb); |
| 1785 | continue; |
| 1786 | } |
| 1787 | |
| 1788 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 1789 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1790 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | case HCI_ACLDATA_PKT: |
| 1792 | case HCI_SCODATA_PKT: |
| 1793 | kfree_skb(skb); |
| 1794 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 1795 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | } |
| 1797 | |
| 1798 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1799 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | case HCI_EVENT_PKT: |
| 1801 | hci_event_packet(hdev, skb); |
| 1802 | break; |
| 1803 | |
| 1804 | case HCI_ACLDATA_PKT: |
| 1805 | BT_DBG("%s ACL data packet", hdev->name); |
| 1806 | hci_acldata_packet(hdev, skb); |
| 1807 | break; |
| 1808 | |
| 1809 | case HCI_SCODATA_PKT: |
| 1810 | BT_DBG("%s SCO data packet", hdev->name); |
| 1811 | hci_scodata_packet(hdev, skb); |
| 1812 | break; |
| 1813 | |
| 1814 | default: |
| 1815 | kfree_skb(skb); |
| 1816 | break; |
| 1817 | } |
| 1818 | } |
| 1819 | |
| 1820 | read_unlock(&hci_task_lock); |
| 1821 | } |
| 1822 | |
| 1823 | static void hci_cmd_task(unsigned long arg) |
| 1824 | { |
| 1825 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 1826 | struct sk_buff *skb; |
| 1827 | |
| 1828 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); |
| 1829 | |
S.Çağlar Onur | 82453021 | 2008-02-17 23:25:57 -0800 | [diff] [blame] | 1830 | if (!atomic_read(&hdev->cmd_cnt) && time_after(jiffies, hdev->cmd_last_tx + HZ)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | BT_ERR("%s command tx timeout", hdev->name); |
| 1832 | atomic_set(&hdev->cmd_cnt, 1); |
| 1833 | } |
| 1834 | |
| 1835 | /* Send queued commands */ |
| 1836 | if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) { |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 1837 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1839 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 1840 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | atomic_dec(&hdev->cmd_cnt); |
| 1842 | hci_send_frame(skb); |
| 1843 | hdev->cmd_last_tx = jiffies; |
| 1844 | } else { |
| 1845 | skb_queue_head(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1846 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | } |
| 1848 | } |
| 1849 | } |