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 | 8245302 | 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> |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 44 | #include <linux/timer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <net/sock.h> |
| 46 | |
| 47 | #include <asm/system.h> |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 48 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <asm/unaligned.h> |
| 50 | |
| 51 | #include <net/bluetooth/bluetooth.h> |
| 52 | #include <net/bluetooth/hci_core.h> |
| 53 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 54 | #define AUTO_OFF_TIMEOUT 2000 |
| 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | static void hci_cmd_task(unsigned long arg); |
| 57 | static void hci_rx_task(unsigned long arg); |
| 58 | static void hci_tx_task(unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 100 | /* If this is the init phase check if the completed command matches |
| 101 | * the last init command, and if not just return. |
| 102 | */ |
| 103 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 104 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | if (hdev->req_status == HCI_REQ_PEND) { |
| 107 | hdev->req_result = result; |
| 108 | hdev->req_status = HCI_REQ_DONE; |
| 109 | wake_up_interruptible(&hdev->req_wait_q); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 114 | { |
| 115 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 116 | |
| 117 | if (hdev->req_status == HCI_REQ_PEND) { |
| 118 | hdev->req_result = err; |
| 119 | hdev->req_status = HCI_REQ_CANCELED; |
| 120 | wake_up_interruptible(&hdev->req_wait_q); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /* Execute request and wait for completion. */ |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 125 | static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 126 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { |
| 128 | DECLARE_WAITQUEUE(wait, current); |
| 129 | int err = 0; |
| 130 | |
| 131 | BT_DBG("%s start", hdev->name); |
| 132 | |
| 133 | hdev->req_status = HCI_REQ_PEND; |
| 134 | |
| 135 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 136 | set_current_state(TASK_INTERRUPTIBLE); |
| 137 | |
| 138 | req(hdev, opt); |
| 139 | schedule_timeout(timeout); |
| 140 | |
| 141 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 142 | |
| 143 | if (signal_pending(current)) |
| 144 | return -EINTR; |
| 145 | |
| 146 | switch (hdev->req_status) { |
| 147 | case HCI_REQ_DONE: |
| 148 | err = -bt_err(hdev->req_result); |
| 149 | break; |
| 150 | |
| 151 | case HCI_REQ_CANCELED: |
| 152 | err = -hdev->req_result; |
| 153 | break; |
| 154 | |
| 155 | default: |
| 156 | err = -ETIMEDOUT; |
| 157 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 158 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 160 | hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | BT_DBG("%s end: err %d", hdev->name, err); |
| 163 | |
| 164 | return err; |
| 165 | } |
| 166 | |
| 167 | static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 168 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
| 170 | int ret; |
| 171 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 172 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 173 | return -ENETDOWN; |
| 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | /* Serialize all requests */ |
| 176 | hci_req_lock(hdev); |
| 177 | ret = __hci_request(hdev, req, opt, timeout); |
| 178 | hci_req_unlock(hdev); |
| 179 | |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) |
| 184 | { |
| 185 | BT_DBG("%s %ld", hdev->name, opt); |
| 186 | |
| 187 | /* Reset device */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 188 | set_bit(HCI_RESET, &hdev->flags); |
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 | { |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 194 | struct hci_cp_delete_stored_link_key cp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | struct sk_buff *skb; |
Marcel Holtmann | 1ebb925 | 2005-11-08 09:57:21 -0800 | [diff] [blame] | 196 | __le16 param; |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 197 | __u8 flt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | BT_DBG("%s %ld", hdev->name, opt); |
| 200 | |
| 201 | /* Driver initialization */ |
| 202 | |
| 203 | /* Special commands */ |
| 204 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 205 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 209 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | } |
| 211 | skb_queue_purge(&hdev->driver_init); |
| 212 | |
| 213 | /* Mandatory initialization */ |
| 214 | |
| 215 | /* Reset */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 216 | if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) { |
| 217 | set_bit(HCI_RESET, &hdev->flags); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 218 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 219 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | /* Read Local Supported Features */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 222 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 224 | /* Read Local Version */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 225 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 228 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
| 230 | #if 0 |
| 231 | /* Host buffer size */ |
| 232 | { |
| 233 | struct hci_cp_host_buffer_size cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 234 | cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | cp.sco_mtu = HCI_MAX_SCO_SIZE; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 236 | cp.acl_max_pkt = cpu_to_le16(0xffff); |
| 237 | cp.sco_max_pkt = cpu_to_le16(0xffff); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 238 | hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | #endif |
| 241 | |
| 242 | /* Read BD Address */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 243 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
| 244 | |
| 245 | /* Read Class of Device */ |
| 246 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
| 247 | |
| 248 | /* Read Local Name */ |
| 249 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | /* Read Voice Setting */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 252 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
| 254 | /* Optional initialization */ |
| 255 | |
| 256 | /* Clear Event Filters */ |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 257 | flt_type = HCI_FLT_CLEAR_ALL; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 258 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | /* Connection accept timeout ~20 secs */ |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 261 | param = cpu_to_le16(0x7d00); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 262 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 263 | |
| 264 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 265 | cp.delete_all = 1; |
| 266 | 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] | 267 | } |
| 268 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 269 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
| 270 | { |
| 271 | BT_DBG("%s", hdev->name); |
| 272 | |
| 273 | /* Read LE buffer size */ |
| 274 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
| 275 | } |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 278 | { |
| 279 | __u8 scan = opt; |
| 280 | |
| 281 | BT_DBG("%s %x", hdev->name, scan); |
| 282 | |
| 283 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 284 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 288 | { |
| 289 | __u8 auth = opt; |
| 290 | |
| 291 | BT_DBG("%s %x", hdev->name, auth); |
| 292 | |
| 293 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 294 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 298 | { |
| 299 | __u8 encrypt = opt; |
| 300 | |
| 301 | BT_DBG("%s %x", hdev->name, encrypt); |
| 302 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 303 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 304 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
| 306 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 307 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 308 | { |
| 309 | __le16 policy = cpu_to_le16(opt); |
| 310 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 311 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 312 | |
| 313 | /* Default link policy */ |
| 314 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 315 | } |
| 316 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 317 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | * Device is held on return. */ |
| 319 | struct hci_dev *hci_dev_get(int index) |
| 320 | { |
| 321 | struct hci_dev *hdev = NULL; |
| 322 | struct list_head *p; |
| 323 | |
| 324 | BT_DBG("%d", index); |
| 325 | |
| 326 | if (index < 0) |
| 327 | return NULL; |
| 328 | |
| 329 | read_lock(&hci_dev_list_lock); |
| 330 | list_for_each(p, &hci_dev_list) { |
| 331 | struct hci_dev *d = list_entry(p, struct hci_dev, list); |
| 332 | if (d->id == index) { |
| 333 | hdev = hci_dev_hold(d); |
| 334 | break; |
| 335 | } |
| 336 | } |
| 337 | read_unlock(&hci_dev_list_lock); |
| 338 | return hdev; |
| 339 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | /* ---- Inquiry support ---- */ |
| 342 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 343 | { |
| 344 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 345 | struct inquiry_entry *next = cache->list, *e; |
| 346 | |
| 347 | BT_DBG("cache %p", cache); |
| 348 | |
| 349 | cache->list = NULL; |
| 350 | while ((e = next)) { |
| 351 | next = e->next; |
| 352 | kfree(e); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 357 | { |
| 358 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 359 | struct inquiry_entry *e; |
| 360 | |
| 361 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 362 | |
| 363 | for (e = cache->list; e; e = e->next) |
| 364 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 365 | break; |
| 366 | return e; |
| 367 | } |
| 368 | |
| 369 | void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) |
| 370 | { |
| 371 | struct inquiry_cache *cache = &hdev->inq_cache; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 372 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
| 374 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); |
| 375 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 376 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
| 377 | if (!ie) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | /* Entry not in the cache. Add new one. */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 379 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 380 | if (!ie) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | return; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 382 | |
| 383 | ie->next = cache->list; |
| 384 | cache->list = ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 387 | memcpy(&ie->data, data, sizeof(*data)); |
| 388 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | cache->timestamp = jiffies; |
| 390 | } |
| 391 | |
| 392 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 393 | { |
| 394 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 395 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 396 | struct inquiry_entry *e; |
| 397 | int copied = 0; |
| 398 | |
| 399 | for (e = cache->list; e && copied < num; e = e->next, copied++) { |
| 400 | struct inquiry_data *data = &e->data; |
| 401 | bacpy(&info->bdaddr, &data->bdaddr); |
| 402 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 403 | info->pscan_period_mode = data->pscan_period_mode; |
| 404 | info->pscan_mode = data->pscan_mode; |
| 405 | memcpy(info->dev_class, data->dev_class, 3); |
| 406 | info->clock_offset = data->clock_offset; |
| 407 | info++; |
| 408 | } |
| 409 | |
| 410 | BT_DBG("cache %p, copied %d", cache, copied); |
| 411 | return copied; |
| 412 | } |
| 413 | |
| 414 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 415 | { |
| 416 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 417 | struct hci_cp_inquiry cp; |
| 418 | |
| 419 | BT_DBG("%s", hdev->name); |
| 420 | |
| 421 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 422 | return; |
| 423 | |
| 424 | /* Start Inquiry */ |
| 425 | memcpy(&cp.lap, &ir->lap, 3); |
| 426 | cp.length = ir->length; |
| 427 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 428 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | int hci_inquiry(void __user *arg) |
| 432 | { |
| 433 | __u8 __user *ptr = arg; |
| 434 | struct hci_inquiry_req ir; |
| 435 | struct hci_dev *hdev; |
| 436 | int err = 0, do_inquiry = 0, max_rsp; |
| 437 | long timeo; |
| 438 | __u8 *buf; |
| 439 | |
| 440 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 441 | return -EFAULT; |
| 442 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 443 | hdev = hci_dev_get(ir.dev_id); |
| 444 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | return -ENODEV; |
| 446 | |
| 447 | hci_dev_lock_bh(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 448 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 449 | inquiry_cache_empty(hdev) || |
| 450 | ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | inquiry_cache_flush(hdev); |
| 452 | do_inquiry = 1; |
| 453 | } |
| 454 | hci_dev_unlock_bh(hdev); |
| 455 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 456 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 457 | |
| 458 | if (do_inquiry) { |
| 459 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 460 | if (err < 0) |
| 461 | goto done; |
| 462 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
| 464 | /* for unlimited number of responses we will use buffer with 255 entries */ |
| 465 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 466 | |
| 467 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 468 | * copy it to the user space. |
| 469 | */ |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 470 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 471 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | err = -ENOMEM; |
| 473 | goto done; |
| 474 | } |
| 475 | |
| 476 | hci_dev_lock_bh(hdev); |
| 477 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
| 478 | hci_dev_unlock_bh(hdev); |
| 479 | |
| 480 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 481 | |
| 482 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 483 | ptr += sizeof(ir); |
| 484 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
| 485 | ir.num_rsp)) |
| 486 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 487 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | err = -EFAULT; |
| 489 | |
| 490 | kfree(buf); |
| 491 | |
| 492 | done: |
| 493 | hci_dev_put(hdev); |
| 494 | return err; |
| 495 | } |
| 496 | |
| 497 | /* ---- HCI ioctl helpers ---- */ |
| 498 | |
| 499 | int hci_dev_open(__u16 dev) |
| 500 | { |
| 501 | struct hci_dev *hdev; |
| 502 | int ret = 0; |
| 503 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 504 | hdev = hci_dev_get(dev); |
| 505 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return -ENODEV; |
| 507 | |
| 508 | BT_DBG("%s %p", hdev->name, hdev); |
| 509 | |
| 510 | hci_req_lock(hdev); |
| 511 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 512 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 513 | ret = -ERFKILL; |
| 514 | goto done; |
| 515 | } |
| 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 518 | ret = -EALREADY; |
| 519 | goto done; |
| 520 | } |
| 521 | |
| 522 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 523 | set_bit(HCI_RAW, &hdev->flags); |
| 524 | |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 525 | /* Treat all non BR/EDR controllers as raw devices for now */ |
| 526 | if (hdev->dev_type != HCI_BREDR) |
| 527 | set_bit(HCI_RAW, &hdev->flags); |
| 528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | if (hdev->open(hdev)) { |
| 530 | ret = -EIO; |
| 531 | goto done; |
| 532 | } |
| 533 | |
| 534 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 535 | atomic_set(&hdev->cmd_cnt, 1); |
| 536 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 537 | hdev->init_last_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 539 | ret = __hci_request(hdev, hci_init_req, 0, |
| 540 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 542 | if (lmp_le_capable(hdev)) |
| 543 | ret = __hci_request(hdev, hci_le_init_req, 0, |
| 544 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
| 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | clear_bit(HCI_INIT, &hdev->flags); |
| 547 | } |
| 548 | |
| 549 | if (!ret) { |
| 550 | hci_dev_hold(hdev); |
| 551 | set_bit(HCI_UP, &hdev->flags); |
| 552 | hci_notify(hdev, HCI_DEV_UP); |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 553 | if (!test_bit(HCI_SETUP, &hdev->flags)) |
| 554 | mgmt_powered(hdev->id, 1); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 555 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | /* Init failed, cleanup */ |
| 557 | tasklet_kill(&hdev->rx_task); |
| 558 | tasklet_kill(&hdev->tx_task); |
| 559 | tasklet_kill(&hdev->cmd_task); |
| 560 | |
| 561 | skb_queue_purge(&hdev->cmd_q); |
| 562 | skb_queue_purge(&hdev->rx_q); |
| 563 | |
| 564 | if (hdev->flush) |
| 565 | hdev->flush(hdev); |
| 566 | |
| 567 | if (hdev->sent_cmd) { |
| 568 | kfree_skb(hdev->sent_cmd); |
| 569 | hdev->sent_cmd = NULL; |
| 570 | } |
| 571 | |
| 572 | hdev->close(hdev); |
| 573 | hdev->flags = 0; |
| 574 | } |
| 575 | |
| 576 | done: |
| 577 | hci_req_unlock(hdev); |
| 578 | hci_dev_put(hdev); |
| 579 | return ret; |
| 580 | } |
| 581 | |
| 582 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 583 | { |
| 584 | BT_DBG("%s %p", hdev->name, hdev); |
| 585 | |
| 586 | hci_req_cancel(hdev, ENODEV); |
| 587 | hci_req_lock(hdev); |
| 588 | |
| 589 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 590 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | hci_req_unlock(hdev); |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | /* Kill RX and TX tasks */ |
| 596 | tasklet_kill(&hdev->rx_task); |
| 597 | tasklet_kill(&hdev->tx_task); |
| 598 | |
| 599 | hci_dev_lock_bh(hdev); |
| 600 | inquiry_cache_flush(hdev); |
| 601 | hci_conn_hash_flush(hdev); |
| 602 | hci_dev_unlock_bh(hdev); |
| 603 | |
| 604 | hci_notify(hdev, HCI_DEV_DOWN); |
| 605 | |
| 606 | if (hdev->flush) |
| 607 | hdev->flush(hdev); |
| 608 | |
| 609 | /* Reset device */ |
| 610 | skb_queue_purge(&hdev->cmd_q); |
| 611 | atomic_set(&hdev->cmd_cnt, 1); |
| 612 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 613 | set_bit(HCI_INIT, &hdev->flags); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 614 | __hci_request(hdev, hci_reset_req, 0, |
| 615 | msecs_to_jiffies(250)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | clear_bit(HCI_INIT, &hdev->flags); |
| 617 | } |
| 618 | |
| 619 | /* Kill cmd task */ |
| 620 | tasklet_kill(&hdev->cmd_task); |
| 621 | |
| 622 | /* Drop queues */ |
| 623 | skb_queue_purge(&hdev->rx_q); |
| 624 | skb_queue_purge(&hdev->cmd_q); |
| 625 | skb_queue_purge(&hdev->raw_q); |
| 626 | |
| 627 | /* Drop last sent command */ |
| 628 | if (hdev->sent_cmd) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 629 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | kfree_skb(hdev->sent_cmd); |
| 631 | hdev->sent_cmd = NULL; |
| 632 | } |
| 633 | |
| 634 | /* After this point our queues are empty |
| 635 | * and no tasks are scheduled. */ |
| 636 | hdev->close(hdev); |
| 637 | |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 638 | mgmt_powered(hdev->id, 0); |
| 639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | /* Clear flags */ |
| 641 | hdev->flags = 0; |
| 642 | |
| 643 | hci_req_unlock(hdev); |
| 644 | |
| 645 | hci_dev_put(hdev); |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | int hci_dev_close(__u16 dev) |
| 650 | { |
| 651 | struct hci_dev *hdev; |
| 652 | int err; |
| 653 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 654 | hdev = hci_dev_get(dev); |
| 655 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | return -ENODEV; |
| 657 | err = hci_dev_do_close(hdev); |
| 658 | hci_dev_put(hdev); |
| 659 | return err; |
| 660 | } |
| 661 | |
| 662 | int hci_dev_reset(__u16 dev) |
| 663 | { |
| 664 | struct hci_dev *hdev; |
| 665 | int ret = 0; |
| 666 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 667 | hdev = hci_dev_get(dev); |
| 668 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | return -ENODEV; |
| 670 | |
| 671 | hci_req_lock(hdev); |
| 672 | tasklet_disable(&hdev->tx_task); |
| 673 | |
| 674 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 675 | goto done; |
| 676 | |
| 677 | /* Drop queues */ |
| 678 | skb_queue_purge(&hdev->rx_q); |
| 679 | skb_queue_purge(&hdev->cmd_q); |
| 680 | |
| 681 | hci_dev_lock_bh(hdev); |
| 682 | inquiry_cache_flush(hdev); |
| 683 | hci_conn_hash_flush(hdev); |
| 684 | hci_dev_unlock_bh(hdev); |
| 685 | |
| 686 | if (hdev->flush) |
| 687 | hdev->flush(hdev); |
| 688 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 689 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 690 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
| 692 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 693 | ret = __hci_request(hdev, hci_reset_req, 0, |
| 694 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
| 696 | done: |
| 697 | tasklet_enable(&hdev->tx_task); |
| 698 | hci_req_unlock(hdev); |
| 699 | hci_dev_put(hdev); |
| 700 | return ret; |
| 701 | } |
| 702 | |
| 703 | int hci_dev_reset_stat(__u16 dev) |
| 704 | { |
| 705 | struct hci_dev *hdev; |
| 706 | int ret = 0; |
| 707 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 708 | hdev = hci_dev_get(dev); |
| 709 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | return -ENODEV; |
| 711 | |
| 712 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 713 | |
| 714 | hci_dev_put(hdev); |
| 715 | |
| 716 | return ret; |
| 717 | } |
| 718 | |
| 719 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 720 | { |
| 721 | struct hci_dev *hdev; |
| 722 | struct hci_dev_req dr; |
| 723 | int err = 0; |
| 724 | |
| 725 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 726 | return -EFAULT; |
| 727 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 728 | hdev = hci_dev_get(dr.dev_id); |
| 729 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | return -ENODEV; |
| 731 | |
| 732 | switch (cmd) { |
| 733 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 734 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 735 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | break; |
| 737 | |
| 738 | case HCISETENCRYPT: |
| 739 | if (!lmp_encrypt_capable(hdev)) { |
| 740 | err = -EOPNOTSUPP; |
| 741 | break; |
| 742 | } |
| 743 | |
| 744 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 745 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 746 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 747 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | if (err) |
| 749 | break; |
| 750 | } |
| 751 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 752 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
| 753 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | break; |
| 755 | |
| 756 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 757 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
| 758 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | break; |
| 760 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 761 | case HCISETLINKPOL: |
| 762 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
| 763 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
| 764 | break; |
| 765 | |
| 766 | case HCISETLINKMODE: |
| 767 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 768 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 769 | break; |
| 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | case HCISETPTYPE: |
| 772 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 773 | break; |
| 774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 776 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 777 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | break; |
| 779 | |
| 780 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 781 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 782 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | break; |
| 784 | |
| 785 | default: |
| 786 | err = -EINVAL; |
| 787 | break; |
| 788 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | hci_dev_put(hdev); |
| 791 | return err; |
| 792 | } |
| 793 | |
| 794 | int hci_get_dev_list(void __user *arg) |
| 795 | { |
| 796 | struct hci_dev_list_req *dl; |
| 797 | struct hci_dev_req *dr; |
| 798 | struct list_head *p; |
| 799 | int n = 0, size, err; |
| 800 | __u16 dev_num; |
| 801 | |
| 802 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 803 | return -EFAULT; |
| 804 | |
| 805 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 806 | return -EINVAL; |
| 807 | |
| 808 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 809 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 810 | dl = kzalloc(size, GFP_KERNEL); |
| 811 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | return -ENOMEM; |
| 813 | |
| 814 | dr = dl->dev_req; |
| 815 | |
| 816 | read_lock_bh(&hci_dev_list_lock); |
| 817 | list_for_each(p, &hci_dev_list) { |
| 818 | struct hci_dev *hdev; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | hdev = list_entry(p, struct hci_dev, list); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 821 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 822 | hci_del_off_timer(hdev); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 823 | |
| 824 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 825 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | (dr + n)->dev_id = hdev->id; |
| 828 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 829 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | if (++n >= dev_num) |
| 831 | break; |
| 832 | } |
| 833 | read_unlock_bh(&hci_dev_list_lock); |
| 834 | |
| 835 | dl->dev_num = n; |
| 836 | size = sizeof(*dl) + n * sizeof(*dr); |
| 837 | |
| 838 | err = copy_to_user(arg, dl, size); |
| 839 | kfree(dl); |
| 840 | |
| 841 | return err ? -EFAULT : 0; |
| 842 | } |
| 843 | |
| 844 | int hci_get_dev_info(void __user *arg) |
| 845 | { |
| 846 | struct hci_dev *hdev; |
| 847 | struct hci_dev_info di; |
| 848 | int err = 0; |
| 849 | |
| 850 | if (copy_from_user(&di, arg, sizeof(di))) |
| 851 | return -EFAULT; |
| 852 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 853 | hdev = hci_dev_get(di.dev_id); |
| 854 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | return -ENODEV; |
| 856 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 857 | hci_del_off_timer(hdev); |
| 858 | |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 859 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 860 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 861 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | strcpy(di.name, hdev->name); |
| 863 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 864 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | di.flags = hdev->flags; |
| 866 | di.pkt_type = hdev->pkt_type; |
| 867 | di.acl_mtu = hdev->acl_mtu; |
| 868 | di.acl_pkts = hdev->acl_pkts; |
| 869 | di.sco_mtu = hdev->sco_mtu; |
| 870 | di.sco_pkts = hdev->sco_pkts; |
| 871 | di.link_policy = hdev->link_policy; |
| 872 | di.link_mode = hdev->link_mode; |
| 873 | |
| 874 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 875 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 876 | |
| 877 | if (copy_to_user(arg, &di, sizeof(di))) |
| 878 | err = -EFAULT; |
| 879 | |
| 880 | hci_dev_put(hdev); |
| 881 | |
| 882 | return err; |
| 883 | } |
| 884 | |
| 885 | /* ---- Interface to HCI drivers ---- */ |
| 886 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 887 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 888 | { |
| 889 | struct hci_dev *hdev = data; |
| 890 | |
| 891 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 892 | |
| 893 | if (!blocked) |
| 894 | return 0; |
| 895 | |
| 896 | hci_dev_do_close(hdev); |
| 897 | |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static const struct rfkill_ops hci_rfkill_ops = { |
| 902 | .set_block = hci_rfkill_set_block, |
| 903 | }; |
| 904 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | /* Alloc HCI device */ |
| 906 | struct hci_dev *hci_alloc_dev(void) |
| 907 | { |
| 908 | struct hci_dev *hdev; |
| 909 | |
Marcel Holtmann | 25ea6db | 2006-07-06 15:40:09 +0200 | [diff] [blame] | 910 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | if (!hdev) |
| 912 | return NULL; |
| 913 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | skb_queue_head_init(&hdev->driver_init); |
| 915 | |
| 916 | return hdev; |
| 917 | } |
| 918 | EXPORT_SYMBOL(hci_alloc_dev); |
| 919 | |
| 920 | /* Free HCI device */ |
| 921 | void hci_free_dev(struct hci_dev *hdev) |
| 922 | { |
| 923 | skb_queue_purge(&hdev->driver_init); |
| 924 | |
Marcel Holtmann | a91f2e3 | 2006-07-03 10:02:41 +0200 | [diff] [blame] | 925 | /* will free via device release */ |
| 926 | put_device(&hdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | } |
| 928 | EXPORT_SYMBOL(hci_free_dev); |
| 929 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 930 | static void hci_power_on(struct work_struct *work) |
| 931 | { |
| 932 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
| 933 | |
| 934 | BT_DBG("%s", hdev->name); |
| 935 | |
| 936 | if (hci_dev_open(hdev->id) < 0) |
| 937 | return; |
| 938 | |
| 939 | if (test_bit(HCI_AUTO_OFF, &hdev->flags)) |
| 940 | mod_timer(&hdev->off_timer, |
| 941 | jiffies + msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
| 942 | |
| 943 | if (test_and_clear_bit(HCI_SETUP, &hdev->flags)) |
| 944 | mgmt_index_added(hdev->id); |
| 945 | } |
| 946 | |
| 947 | static void hci_power_off(struct work_struct *work) |
| 948 | { |
| 949 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_off); |
| 950 | |
| 951 | BT_DBG("%s", hdev->name); |
| 952 | |
| 953 | hci_dev_close(hdev->id); |
| 954 | } |
| 955 | |
| 956 | static void hci_auto_off(unsigned long data) |
| 957 | { |
| 958 | struct hci_dev *hdev = (struct hci_dev *) data; |
| 959 | |
| 960 | BT_DBG("%s", hdev->name); |
| 961 | |
| 962 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 963 | |
| 964 | queue_work(hdev->workqueue, &hdev->power_off); |
| 965 | } |
| 966 | |
| 967 | void hci_del_off_timer(struct hci_dev *hdev) |
| 968 | { |
| 969 | BT_DBG("%s", hdev->name); |
| 970 | |
| 971 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 972 | del_timer(&hdev->off_timer); |
| 973 | } |
| 974 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 975 | int hci_uuids_clear(struct hci_dev *hdev) |
| 976 | { |
| 977 | struct list_head *p, *n; |
| 978 | |
| 979 | list_for_each_safe(p, n, &hdev->uuids) { |
| 980 | struct bt_uuid *uuid; |
| 981 | |
| 982 | uuid = list_entry(p, struct bt_uuid, list); |
| 983 | |
| 984 | list_del(p); |
| 985 | kfree(uuid); |
| 986 | } |
| 987 | |
| 988 | return 0; |
| 989 | } |
| 990 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 991 | int hci_link_keys_clear(struct hci_dev *hdev) |
| 992 | { |
| 993 | struct list_head *p, *n; |
| 994 | |
| 995 | list_for_each_safe(p, n, &hdev->link_keys) { |
| 996 | struct link_key *key; |
| 997 | |
| 998 | key = list_entry(p, struct link_key, list); |
| 999 | |
| 1000 | list_del(p); |
| 1001 | kfree(key); |
| 1002 | } |
| 1003 | |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
| 1007 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1008 | { |
| 1009 | struct list_head *p; |
| 1010 | |
| 1011 | list_for_each(p, &hdev->link_keys) { |
| 1012 | struct link_key *k; |
| 1013 | |
| 1014 | k = list_entry(p, struct link_key, list); |
| 1015 | |
| 1016 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
| 1017 | return k; |
| 1018 | } |
| 1019 | |
| 1020 | return NULL; |
| 1021 | } |
| 1022 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1023 | static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
| 1024 | u8 key_type, u8 old_key_type) |
| 1025 | { |
| 1026 | /* Legacy key */ |
| 1027 | if (key_type < 0x03) |
| 1028 | return 1; |
| 1029 | |
| 1030 | /* Debug keys are insecure so don't store them persistently */ |
| 1031 | if (key_type == HCI_LK_DEBUG_COMBINATION) |
| 1032 | return 0; |
| 1033 | |
| 1034 | /* Changed combination key and there's no previous one */ |
| 1035 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) |
| 1036 | return 0; |
| 1037 | |
| 1038 | /* Security mode 3 case */ |
| 1039 | if (!conn) |
| 1040 | return 1; |
| 1041 | |
| 1042 | /* Neither local nor remote side had no-bonding as requirement */ |
| 1043 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) |
| 1044 | return 1; |
| 1045 | |
| 1046 | /* Local side had dedicated bonding as requirement */ |
| 1047 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) |
| 1048 | return 1; |
| 1049 | |
| 1050 | /* Remote side had dedicated bonding as requirement */ |
| 1051 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) |
| 1052 | return 1; |
| 1053 | |
| 1054 | /* If none of the above criteria match, then don't store the key |
| 1055 | * persistently */ |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
| 1059 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
| 1060 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1061 | { |
| 1062 | struct link_key *key, *old_key; |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1063 | u8 old_key_type, persistent; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1064 | |
| 1065 | old_key = hci_find_link_key(hdev, bdaddr); |
| 1066 | if (old_key) { |
| 1067 | old_key_type = old_key->type; |
| 1068 | key = old_key; |
| 1069 | } else { |
Johan Hedberg | 12adcf3 | 2011-04-28 11:29:00 -0700 | [diff] [blame] | 1070 | old_key_type = conn ? conn->key_type : 0xff; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1071 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
| 1072 | if (!key) |
| 1073 | return -ENOMEM; |
| 1074 | list_add(&key->list, &hdev->link_keys); |
| 1075 | } |
| 1076 | |
| 1077 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); |
| 1078 | |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1079 | /* Some buggy controller combinations generate a changed |
| 1080 | * combination key for legacy pairing even when there's no |
| 1081 | * previous key */ |
| 1082 | if (type == HCI_LK_CHANGED_COMBINATION && |
| 1083 | (!conn || conn->remote_auth == 0xff) && |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 1084 | old_key_type == 0xff) { |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1085 | type = HCI_LK_COMBINATION; |
Johan Hedberg | 655fe6e | 2011-04-28 11:29:01 -0700 | [diff] [blame] | 1086 | if (conn) |
| 1087 | conn->key_type = type; |
| 1088 | } |
Johan Hedberg | d25e28a | 2011-04-28 11:28:59 -0700 | [diff] [blame] | 1089 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1090 | bacpy(&key->bdaddr, bdaddr); |
| 1091 | memcpy(key->val, val, 16); |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1092 | key->pin_len = pin_len; |
| 1093 | |
Waldemar Rymarkiewicz | b6020ba | 2011-04-28 12:07:53 +0200 | [diff] [blame] | 1094 | if (type == HCI_LK_CHANGED_COMBINATION) |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1095 | key->type = old_key_type; |
Johan Hedberg | 4748fed | 2011-04-28 11:29:02 -0700 | [diff] [blame] | 1096 | else |
| 1097 | key->type = type; |
| 1098 | |
Johan Hedberg | 4df378a | 2011-04-28 11:29:03 -0700 | [diff] [blame] | 1099 | if (!new_key) |
| 1100 | return 0; |
| 1101 | |
| 1102 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); |
| 1103 | |
| 1104 | mgmt_new_key(hdev->id, key, persistent); |
| 1105 | |
| 1106 | if (!persistent) { |
| 1107 | list_del(&key->list); |
| 1108 | kfree(key); |
| 1109 | } |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1110 | |
| 1111 | return 0; |
| 1112 | } |
| 1113 | |
| 1114 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1115 | { |
| 1116 | struct link_key *key; |
| 1117 | |
| 1118 | key = hci_find_link_key(hdev, bdaddr); |
| 1119 | if (!key) |
| 1120 | return -ENOENT; |
| 1121 | |
| 1122 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1123 | |
| 1124 | list_del(&key->list); |
| 1125 | kfree(key); |
| 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1130 | /* HCI command timer function */ |
| 1131 | static void hci_cmd_timer(unsigned long arg) |
| 1132 | { |
| 1133 | struct hci_dev *hdev = (void *) arg; |
| 1134 | |
| 1135 | BT_ERR("%s command tx timeout", hdev->name); |
| 1136 | atomic_set(&hdev->cmd_cnt, 1); |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 1137 | clear_bit(HCI_RESET, &hdev->flags); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1138 | tasklet_schedule(&hdev->cmd_task); |
| 1139 | } |
| 1140 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1141 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
| 1142 | bdaddr_t *bdaddr) |
| 1143 | { |
| 1144 | struct oob_data *data; |
| 1145 | |
| 1146 | list_for_each_entry(data, &hdev->remote_oob_data, list) |
| 1147 | if (bacmp(bdaddr, &data->bdaddr) == 0) |
| 1148 | return data; |
| 1149 | |
| 1150 | return NULL; |
| 1151 | } |
| 1152 | |
| 1153 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1154 | { |
| 1155 | struct oob_data *data; |
| 1156 | |
| 1157 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1158 | if (!data) |
| 1159 | return -ENOENT; |
| 1160 | |
| 1161 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1162 | |
| 1163 | list_del(&data->list); |
| 1164 | kfree(data); |
| 1165 | |
| 1166 | return 0; |
| 1167 | } |
| 1168 | |
| 1169 | int hci_remote_oob_data_clear(struct hci_dev *hdev) |
| 1170 | { |
| 1171 | struct oob_data *data, *n; |
| 1172 | |
| 1173 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 1174 | list_del(&data->list); |
| 1175 | kfree(data); |
| 1176 | } |
| 1177 | |
| 1178 | return 0; |
| 1179 | } |
| 1180 | |
| 1181 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, |
| 1182 | u8 *randomizer) |
| 1183 | { |
| 1184 | struct oob_data *data; |
| 1185 | |
| 1186 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1187 | |
| 1188 | if (!data) { |
| 1189 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
| 1190 | if (!data) |
| 1191 | return -ENOMEM; |
| 1192 | |
| 1193 | bacpy(&data->bdaddr, bdaddr); |
| 1194 | list_add(&data->list, &hdev->remote_oob_data); |
| 1195 | } |
| 1196 | |
| 1197 | memcpy(data->hash, hash, sizeof(data->hash)); |
| 1198 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); |
| 1199 | |
| 1200 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); |
| 1201 | |
| 1202 | return 0; |
| 1203 | } |
| 1204 | |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame^] | 1205 | int hci_adv_entries_clear(struct hci_dev *hdev) |
| 1206 | { |
| 1207 | struct adv_entry *entry, *tmp; |
| 1208 | |
| 1209 | list_for_each_entry_safe(entry, tmp, &hdev->adv_entries, list) { |
| 1210 | list_del(&entry->list); |
| 1211 | kfree(entry); |
| 1212 | } |
| 1213 | |
| 1214 | BT_DBG("%s adv cache cleared", hdev->name); |
| 1215 | |
| 1216 | return 0; |
| 1217 | } |
| 1218 | |
| 1219 | struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1220 | { |
| 1221 | struct adv_entry *entry; |
| 1222 | |
| 1223 | list_for_each_entry(entry, &hdev->adv_entries, list) |
| 1224 | if (bacmp(bdaddr, &entry->bdaddr) == 0) |
| 1225 | return entry; |
| 1226 | |
| 1227 | return NULL; |
| 1228 | } |
| 1229 | |
| 1230 | static inline int is_connectable_adv(u8 evt_type) |
| 1231 | { |
| 1232 | if (evt_type == ADV_IND || evt_type == ADV_DIRECT_IND) |
| 1233 | return 1; |
| 1234 | |
| 1235 | return 0; |
| 1236 | } |
| 1237 | |
| 1238 | int hci_add_adv_entry(struct hci_dev *hdev, |
| 1239 | struct hci_ev_le_advertising_info *ev) |
| 1240 | { |
| 1241 | struct adv_entry *entry; |
| 1242 | |
| 1243 | if (!is_connectable_adv(ev->evt_type)) |
| 1244 | return -EINVAL; |
| 1245 | |
| 1246 | /* Only new entries should be added to adv_entries. So, if |
| 1247 | * bdaddr was found, don't add it. */ |
| 1248 | if (hci_find_adv_entry(hdev, &ev->bdaddr)) |
| 1249 | return 0; |
| 1250 | |
| 1251 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
| 1252 | if (!entry) |
| 1253 | return -ENOMEM; |
| 1254 | |
| 1255 | bacpy(&entry->bdaddr, &ev->bdaddr); |
| 1256 | entry->bdaddr_type = ev->bdaddr_type; |
| 1257 | |
| 1258 | list_add(&entry->list, &hdev->adv_entries); |
| 1259 | |
| 1260 | BT_DBG("%s adv entry added: address %s type %u", hdev->name, |
| 1261 | batostr(&entry->bdaddr), entry->bdaddr_type); |
| 1262 | |
| 1263 | return 0; |
| 1264 | } |
| 1265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | /* Register HCI device */ |
| 1267 | int hci_register_dev(struct hci_dev *hdev) |
| 1268 | { |
| 1269 | struct list_head *head = &hci_dev_list, *p; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1270 | int i, id = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | |
Marcel Holtmann | c13854ce | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1272 | BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, |
| 1273 | hdev->bus, hdev->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | |
| 1275 | if (!hdev->open || !hdev->close || !hdev->destruct) |
| 1276 | return -EINVAL; |
| 1277 | |
| 1278 | write_lock_bh(&hci_dev_list_lock); |
| 1279 | |
| 1280 | /* Find first available device id */ |
| 1281 | list_for_each(p, &hci_dev_list) { |
| 1282 | if (list_entry(p, struct hci_dev, list)->id != id) |
| 1283 | break; |
| 1284 | head = p; id++; |
| 1285 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | sprintf(hdev->name, "hci%d", id); |
| 1288 | hdev->id = id; |
| 1289 | list_add(&hdev->list, head); |
| 1290 | |
| 1291 | atomic_set(&hdev->refcnt, 1); |
| 1292 | spin_lock_init(&hdev->lock); |
| 1293 | |
| 1294 | hdev->flags = 0; |
| 1295 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 1296 | hdev->esco_type = (ESCO_HV1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | hdev->link_mode = (HCI_LM_ACCEPT); |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 1298 | hdev->io_capability = 0x03; /* No Input No Output */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1300 | hdev->idle_timeout = 0; |
| 1301 | hdev->sniff_max_interval = 800; |
| 1302 | hdev->sniff_min_interval = 80; |
| 1303 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1304 | tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); |
| 1306 | tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); |
| 1307 | |
| 1308 | skb_queue_head_init(&hdev->rx_q); |
| 1309 | skb_queue_head_init(&hdev->cmd_q); |
| 1310 | skb_queue_head_init(&hdev->raw_q); |
| 1311 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1312 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); |
| 1313 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1314 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1315 | hdev->reassembly[i] = NULL; |
| 1316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | init_waitqueue_head(&hdev->req_wait_q); |
Thomas Gleixner | a6a67ef | 2009-07-26 08:18:19 +0000 | [diff] [blame] | 1318 | mutex_init(&hdev->req_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | |
| 1320 | inquiry_cache_init(hdev); |
| 1321 | |
| 1322 | hci_conn_hash_init(hdev); |
| 1323 | |
David Miller | ea4bd8b | 2010-07-30 21:54:49 -0700 | [diff] [blame] | 1324 | INIT_LIST_HEAD(&hdev->blacklist); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 1325 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1326 | INIT_LIST_HEAD(&hdev->uuids); |
| 1327 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1328 | INIT_LIST_HEAD(&hdev->link_keys); |
| 1329 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1330 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
| 1331 | |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame^] | 1332 | INIT_LIST_HEAD(&hdev->adv_entries); |
| 1333 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1334 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1335 | INIT_WORK(&hdev->power_off, hci_power_off); |
| 1336 | setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev); |
| 1337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 1339 | |
| 1340 | atomic_set(&hdev->promisc, 0); |
| 1341 | |
| 1342 | write_unlock_bh(&hci_dev_list_lock); |
| 1343 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1344 | hdev->workqueue = create_singlethread_workqueue(hdev->name); |
| 1345 | if (!hdev->workqueue) |
| 1346 | goto nomem; |
| 1347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | hci_register_sysfs(hdev); |
| 1349 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1350 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
| 1351 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); |
| 1352 | if (hdev->rfkill) { |
| 1353 | if (rfkill_register(hdev->rfkill) < 0) { |
| 1354 | rfkill_destroy(hdev->rfkill); |
| 1355 | hdev->rfkill = NULL; |
| 1356 | } |
| 1357 | } |
| 1358 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1359 | set_bit(HCI_AUTO_OFF, &hdev->flags); |
| 1360 | set_bit(HCI_SETUP, &hdev->flags); |
| 1361 | queue_work(hdev->workqueue, &hdev->power_on); |
| 1362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | hci_notify(hdev, HCI_DEV_REG); |
| 1364 | |
| 1365 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1366 | |
| 1367 | nomem: |
| 1368 | write_lock_bh(&hci_dev_list_lock); |
| 1369 | list_del(&hdev->list); |
| 1370 | write_unlock_bh(&hci_dev_list_lock); |
| 1371 | |
| 1372 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | } |
| 1374 | EXPORT_SYMBOL(hci_register_dev); |
| 1375 | |
| 1376 | /* Unregister HCI device */ |
| 1377 | int hci_unregister_dev(struct hci_dev *hdev) |
| 1378 | { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1379 | int i; |
| 1380 | |
Marcel Holtmann | c13854ce | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1381 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | write_lock_bh(&hci_dev_list_lock); |
| 1384 | list_del(&hdev->list); |
| 1385 | write_unlock_bh(&hci_dev_list_lock); |
| 1386 | |
| 1387 | hci_dev_do_close(hdev); |
| 1388 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1389 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1390 | kfree_skb(hdev->reassembly[i]); |
| 1391 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1392 | if (!test_bit(HCI_INIT, &hdev->flags) && |
| 1393 | !test_bit(HCI_SETUP, &hdev->flags)) |
| 1394 | mgmt_index_removed(hdev->id); |
| 1395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1397 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1398 | if (hdev->rfkill) { |
| 1399 | rfkill_unregister(hdev->rfkill); |
| 1400 | rfkill_destroy(hdev->rfkill); |
| 1401 | } |
| 1402 | |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1403 | hci_unregister_sysfs(hdev); |
| 1404 | |
Gustavo F. Padovan | c6f3c5f | 2011-02-15 20:22:03 -0300 | [diff] [blame] | 1405 | hci_del_off_timer(hdev); |
| 1406 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1407 | destroy_workqueue(hdev->workqueue); |
| 1408 | |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1409 | hci_dev_lock_bh(hdev); |
| 1410 | hci_blacklist_clear(hdev); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1411 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1412 | hci_link_keys_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1413 | hci_remote_oob_data_clear(hdev); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame^] | 1414 | hci_adv_entries_clear(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1415 | hci_dev_unlock_bh(hdev); |
| 1416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | __hci_dev_put(hdev); |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | return 0; |
| 1420 | } |
| 1421 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1422 | |
| 1423 | /* Suspend HCI device */ |
| 1424 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1425 | { |
| 1426 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1427 | return 0; |
| 1428 | } |
| 1429 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1430 | |
| 1431 | /* Resume HCI device */ |
| 1432 | int hci_resume_dev(struct hci_dev *hdev) |
| 1433 | { |
| 1434 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1435 | return 0; |
| 1436 | } |
| 1437 | EXPORT_SYMBOL(hci_resume_dev); |
| 1438 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1439 | /* Receive frame from HCI drivers */ |
| 1440 | int hci_recv_frame(struct sk_buff *skb) |
| 1441 | { |
| 1442 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1443 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
| 1444 | && !test_bit(HCI_INIT, &hdev->flags))) { |
| 1445 | kfree_skb(skb); |
| 1446 | return -ENXIO; |
| 1447 | } |
| 1448 | |
| 1449 | /* Incomming skb */ |
| 1450 | bt_cb(skb)->incoming = 1; |
| 1451 | |
| 1452 | /* Time stamp */ |
| 1453 | __net_timestamp(skb); |
| 1454 | |
| 1455 | /* Queue frame for rx task */ |
| 1456 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1457 | tasklet_schedule(&hdev->rx_task); |
| 1458 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1459 | return 0; |
| 1460 | } |
| 1461 | EXPORT_SYMBOL(hci_recv_frame); |
| 1462 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1463 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1464 | int count, __u8 index) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1465 | { |
| 1466 | int len = 0; |
| 1467 | int hlen = 0; |
| 1468 | int remain = count; |
| 1469 | struct sk_buff *skb; |
| 1470 | struct bt_skb_cb *scb; |
| 1471 | |
| 1472 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
| 1473 | index >= NUM_REASSEMBLY) |
| 1474 | return -EILSEQ; |
| 1475 | |
| 1476 | skb = hdev->reassembly[index]; |
| 1477 | |
| 1478 | if (!skb) { |
| 1479 | switch (type) { |
| 1480 | case HCI_ACLDATA_PKT: |
| 1481 | len = HCI_MAX_FRAME_SIZE; |
| 1482 | hlen = HCI_ACL_HDR_SIZE; |
| 1483 | break; |
| 1484 | case HCI_EVENT_PKT: |
| 1485 | len = HCI_MAX_EVENT_SIZE; |
| 1486 | hlen = HCI_EVENT_HDR_SIZE; |
| 1487 | break; |
| 1488 | case HCI_SCODATA_PKT: |
| 1489 | len = HCI_MAX_SCO_SIZE; |
| 1490 | hlen = HCI_SCO_HDR_SIZE; |
| 1491 | break; |
| 1492 | } |
| 1493 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1494 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1495 | if (!skb) |
| 1496 | return -ENOMEM; |
| 1497 | |
| 1498 | scb = (void *) skb->cb; |
| 1499 | scb->expect = hlen; |
| 1500 | scb->pkt_type = type; |
| 1501 | |
| 1502 | skb->dev = (void *) hdev; |
| 1503 | hdev->reassembly[index] = skb; |
| 1504 | } |
| 1505 | |
| 1506 | while (count) { |
| 1507 | scb = (void *) skb->cb; |
| 1508 | len = min(scb->expect, (__u16)count); |
| 1509 | |
| 1510 | memcpy(skb_put(skb, len), data, len); |
| 1511 | |
| 1512 | count -= len; |
| 1513 | data += len; |
| 1514 | scb->expect -= len; |
| 1515 | remain = count; |
| 1516 | |
| 1517 | switch (type) { |
| 1518 | case HCI_EVENT_PKT: |
| 1519 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1520 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1521 | scb->expect = h->plen; |
| 1522 | |
| 1523 | if (skb_tailroom(skb) < scb->expect) { |
| 1524 | kfree_skb(skb); |
| 1525 | hdev->reassembly[index] = NULL; |
| 1526 | return -ENOMEM; |
| 1527 | } |
| 1528 | } |
| 1529 | break; |
| 1530 | |
| 1531 | case HCI_ACLDATA_PKT: |
| 1532 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1533 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1534 | scb->expect = __le16_to_cpu(h->dlen); |
| 1535 | |
| 1536 | if (skb_tailroom(skb) < scb->expect) { |
| 1537 | kfree_skb(skb); |
| 1538 | hdev->reassembly[index] = NULL; |
| 1539 | return -ENOMEM; |
| 1540 | } |
| 1541 | } |
| 1542 | break; |
| 1543 | |
| 1544 | case HCI_SCODATA_PKT: |
| 1545 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1546 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1547 | scb->expect = h->dlen; |
| 1548 | |
| 1549 | if (skb_tailroom(skb) < scb->expect) { |
| 1550 | kfree_skb(skb); |
| 1551 | hdev->reassembly[index] = NULL; |
| 1552 | return -ENOMEM; |
| 1553 | } |
| 1554 | } |
| 1555 | break; |
| 1556 | } |
| 1557 | |
| 1558 | if (scb->expect == 0) { |
| 1559 | /* Complete frame */ |
| 1560 | |
| 1561 | bt_cb(skb)->pkt_type = type; |
| 1562 | hci_recv_frame(skb); |
| 1563 | |
| 1564 | hdev->reassembly[index] = NULL; |
| 1565 | return remain; |
| 1566 | } |
| 1567 | } |
| 1568 | |
| 1569 | return remain; |
| 1570 | } |
| 1571 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1572 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1573 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1574 | int rem = 0; |
| 1575 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1576 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1577 | return -EILSEQ; |
| 1578 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1579 | while (count) { |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1580 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1581 | if (rem < 0) |
| 1582 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1583 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1584 | data += (count - rem); |
| 1585 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1586 | }; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1587 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1588 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1589 | } |
| 1590 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1591 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1592 | #define STREAM_REASSEMBLY 0 |
| 1593 | |
| 1594 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 1595 | { |
| 1596 | int type; |
| 1597 | int rem = 0; |
| 1598 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1599 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1600 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 1601 | |
| 1602 | if (!skb) { |
| 1603 | struct { char type; } *pkt; |
| 1604 | |
| 1605 | /* Start of the frame */ |
| 1606 | pkt = data; |
| 1607 | type = pkt->type; |
| 1608 | |
| 1609 | data++; |
| 1610 | count--; |
| 1611 | } else |
| 1612 | type = bt_cb(skb)->pkt_type; |
| 1613 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1614 | rem = hci_reassembly(hdev, type, data, count, |
| 1615 | STREAM_REASSEMBLY); |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1616 | if (rem < 0) |
| 1617 | return rem; |
| 1618 | |
| 1619 | data += (count - rem); |
| 1620 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1621 | }; |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1622 | |
| 1623 | return rem; |
| 1624 | } |
| 1625 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 1626 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | /* ---- Interface to upper protocols ---- */ |
| 1628 | |
| 1629 | /* Register/Unregister protocols. |
| 1630 | * hci_task_lock is used to ensure that no tasks are running. */ |
| 1631 | int hci_register_proto(struct hci_proto *hp) |
| 1632 | { |
| 1633 | int err = 0; |
| 1634 | |
| 1635 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1636 | |
| 1637 | if (hp->id >= HCI_MAX_PROTO) |
| 1638 | return -EINVAL; |
| 1639 | |
| 1640 | write_lock_bh(&hci_task_lock); |
| 1641 | |
| 1642 | if (!hci_proto[hp->id]) |
| 1643 | hci_proto[hp->id] = hp; |
| 1644 | else |
| 1645 | err = -EEXIST; |
| 1646 | |
| 1647 | write_unlock_bh(&hci_task_lock); |
| 1648 | |
| 1649 | return err; |
| 1650 | } |
| 1651 | EXPORT_SYMBOL(hci_register_proto); |
| 1652 | |
| 1653 | int hci_unregister_proto(struct hci_proto *hp) |
| 1654 | { |
| 1655 | int err = 0; |
| 1656 | |
| 1657 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1658 | |
| 1659 | if (hp->id >= HCI_MAX_PROTO) |
| 1660 | return -EINVAL; |
| 1661 | |
| 1662 | write_lock_bh(&hci_task_lock); |
| 1663 | |
| 1664 | if (hci_proto[hp->id]) |
| 1665 | hci_proto[hp->id] = NULL; |
| 1666 | else |
| 1667 | err = -ENOENT; |
| 1668 | |
| 1669 | write_unlock_bh(&hci_task_lock); |
| 1670 | |
| 1671 | return err; |
| 1672 | } |
| 1673 | EXPORT_SYMBOL(hci_unregister_proto); |
| 1674 | |
| 1675 | int hci_register_cb(struct hci_cb *cb) |
| 1676 | { |
| 1677 | BT_DBG("%p name %s", cb, cb->name); |
| 1678 | |
| 1679 | write_lock_bh(&hci_cb_list_lock); |
| 1680 | list_add(&cb->list, &hci_cb_list); |
| 1681 | write_unlock_bh(&hci_cb_list_lock); |
| 1682 | |
| 1683 | return 0; |
| 1684 | } |
| 1685 | EXPORT_SYMBOL(hci_register_cb); |
| 1686 | |
| 1687 | int hci_unregister_cb(struct hci_cb *cb) |
| 1688 | { |
| 1689 | BT_DBG("%p name %s", cb, cb->name); |
| 1690 | |
| 1691 | write_lock_bh(&hci_cb_list_lock); |
| 1692 | list_del(&cb->list); |
| 1693 | write_unlock_bh(&hci_cb_list_lock); |
| 1694 | |
| 1695 | return 0; |
| 1696 | } |
| 1697 | EXPORT_SYMBOL(hci_unregister_cb); |
| 1698 | |
| 1699 | static int hci_send_frame(struct sk_buff *skb) |
| 1700 | { |
| 1701 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1702 | |
| 1703 | if (!hdev) { |
| 1704 | kfree_skb(skb); |
| 1705 | return -ENODEV; |
| 1706 | } |
| 1707 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1708 | 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] | 1709 | |
| 1710 | if (atomic_read(&hdev->promisc)) { |
| 1711 | /* Time stamp */ |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1712 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 1714 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | } |
| 1716 | |
| 1717 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 1718 | skb_orphan(skb); |
| 1719 | |
| 1720 | return hdev->send(skb); |
| 1721 | } |
| 1722 | |
| 1723 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1724 | 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] | 1725 | { |
| 1726 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 1727 | struct hci_command_hdr *hdr; |
| 1728 | struct sk_buff *skb; |
| 1729 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1730 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | |
| 1732 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 1733 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1734 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | return -ENOMEM; |
| 1736 | } |
| 1737 | |
| 1738 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1739 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | hdr->plen = plen; |
| 1741 | |
| 1742 | if (plen) |
| 1743 | memcpy(skb_put(skb, plen), param, plen); |
| 1744 | |
| 1745 | BT_DBG("skb len %d", skb->len); |
| 1746 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1747 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1749 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 1750 | if (test_bit(HCI_INIT, &hdev->flags)) |
| 1751 | hdev->init_last_cmd = opcode; |
| 1752 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1754 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
| 1756 | return 0; |
| 1757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | |
| 1759 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1760 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | { |
| 1762 | struct hci_command_hdr *hdr; |
| 1763 | |
| 1764 | if (!hdev->sent_cmd) |
| 1765 | return NULL; |
| 1766 | |
| 1767 | hdr = (void *) hdev->sent_cmd->data; |
| 1768 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1769 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | return NULL; |
| 1771 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1772 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | |
| 1774 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 1775 | } |
| 1776 | |
| 1777 | /* Send ACL data */ |
| 1778 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 1779 | { |
| 1780 | struct hci_acl_hdr *hdr; |
| 1781 | int len = skb->len; |
| 1782 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 1783 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 1784 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 1785 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1786 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 1787 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | } |
| 1789 | |
Gustavo F. Padovan | 9a9c6a3 | 2010-05-01 16:15:43 -0300 | [diff] [blame] | 1790 | 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] | 1791 | { |
| 1792 | struct hci_dev *hdev = conn->hdev; |
| 1793 | struct sk_buff *list; |
| 1794 | |
| 1795 | BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); |
| 1796 | |
| 1797 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1798 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1799 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1801 | list = skb_shinfo(skb)->frag_list; |
| 1802 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | /* Non fragmented */ |
| 1804 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 1805 | |
| 1806 | skb_queue_tail(&conn->data_q, skb); |
| 1807 | } else { |
| 1808 | /* Fragmented */ |
| 1809 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 1810 | |
| 1811 | skb_shinfo(skb)->frag_list = NULL; |
| 1812 | |
| 1813 | /* Queue all fragments atomically */ |
| 1814 | spin_lock_bh(&conn->data_q.lock); |
| 1815 | |
| 1816 | __skb_queue_tail(&conn->data_q, skb); |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1817 | |
| 1818 | flags &= ~ACL_START; |
| 1819 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | do { |
| 1821 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1822 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1824 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 1825 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
| 1827 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 1828 | |
| 1829 | __skb_queue_tail(&conn->data_q, skb); |
| 1830 | } while (list); |
| 1831 | |
| 1832 | spin_unlock_bh(&conn->data_q.lock); |
| 1833 | } |
| 1834 | |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1835 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | } |
| 1837 | EXPORT_SYMBOL(hci_send_acl); |
| 1838 | |
| 1839 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 1840 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | { |
| 1842 | struct hci_dev *hdev = conn->hdev; |
| 1843 | struct hci_sco_hdr hdr; |
| 1844 | |
| 1845 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 1846 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1847 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | hdr.dlen = skb->len; |
| 1849 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 1850 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 1851 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 1852 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | |
| 1854 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1855 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | skb_queue_tail(&conn->data_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1858 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | } |
| 1860 | EXPORT_SYMBOL(hci_send_sco); |
| 1861 | |
| 1862 | /* ---- HCI TX task (outgoing data) ---- */ |
| 1863 | |
| 1864 | /* HCI Connection scheduler */ |
| 1865 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) |
| 1866 | { |
| 1867 | struct hci_conn_hash *h = &hdev->conn_hash; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 1868 | struct hci_conn *conn = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | int num = 0, min = ~0; |
| 1870 | struct list_head *p; |
| 1871 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1872 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | * added and removed with TX task disabled. */ |
| 1874 | list_for_each(p, &h->list) { |
| 1875 | struct hci_conn *c; |
| 1876 | c = list_entry(p, struct hci_conn, list); |
| 1877 | |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 1878 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 1880 | |
| 1881 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 1882 | continue; |
| 1883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | num++; |
| 1885 | |
| 1886 | if (c->sent < min) { |
| 1887 | min = c->sent; |
| 1888 | conn = c; |
| 1889 | } |
| 1890 | } |
| 1891 | |
| 1892 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 1893 | int cnt, q; |
| 1894 | |
| 1895 | switch (conn->type) { |
| 1896 | case ACL_LINK: |
| 1897 | cnt = hdev->acl_cnt; |
| 1898 | break; |
| 1899 | case SCO_LINK: |
| 1900 | case ESCO_LINK: |
| 1901 | cnt = hdev->sco_cnt; |
| 1902 | break; |
| 1903 | case LE_LINK: |
| 1904 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 1905 | break; |
| 1906 | default: |
| 1907 | cnt = 0; |
| 1908 | BT_ERR("Unknown link type"); |
| 1909 | } |
| 1910 | |
| 1911 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | *quote = q ? q : 1; |
| 1913 | } else |
| 1914 | *quote = 0; |
| 1915 | |
| 1916 | BT_DBG("conn %p quote %d", conn, *quote); |
| 1917 | return conn; |
| 1918 | } |
| 1919 | |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 1920 | static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | { |
| 1922 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 1923 | struct list_head *p; |
| 1924 | struct hci_conn *c; |
| 1925 | |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 1926 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | |
| 1928 | /* Kill stalled connections */ |
| 1929 | list_for_each(p, &h->list) { |
| 1930 | c = list_entry(p, struct hci_conn, list); |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 1931 | if (c->type == type && c->sent) { |
| 1932 | BT_ERR("%s killing stalled connection %s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | hdev->name, batostr(&c->dst)); |
| 1934 | hci_acl_disconn(c, 0x13); |
| 1935 | } |
| 1936 | } |
| 1937 | } |
| 1938 | |
| 1939 | static inline void hci_sched_acl(struct hci_dev *hdev) |
| 1940 | { |
| 1941 | struct hci_conn *conn; |
| 1942 | struct sk_buff *skb; |
| 1943 | int quote; |
| 1944 | |
| 1945 | BT_DBG("%s", hdev->name); |
| 1946 | |
| 1947 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 1948 | /* ACL tx timeout must be longer than maximum |
| 1949 | * link supervision timeout (40.9 seconds) */ |
S.Çağlar Onur | 8245302 | 2008-02-17 23:25:57 -0800 | [diff] [blame] | 1950 | if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 1951 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | } |
| 1953 | |
| 1954 | while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { |
| 1955 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 1956 | BT_DBG("skb %p len %d", skb, skb->len); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1957 | |
| 1958 | hci_conn_enter_active_mode(conn); |
| 1959 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | hci_send_frame(skb); |
| 1961 | hdev->acl_last_tx = jiffies; |
| 1962 | |
| 1963 | hdev->acl_cnt--; |
| 1964 | conn->sent++; |
| 1965 | } |
| 1966 | } |
| 1967 | } |
| 1968 | |
| 1969 | /* Schedule SCO */ |
| 1970 | static inline void hci_sched_sco(struct hci_dev *hdev) |
| 1971 | { |
| 1972 | struct hci_conn *conn; |
| 1973 | struct sk_buff *skb; |
| 1974 | int quote; |
| 1975 | |
| 1976 | BT_DBG("%s", hdev->name); |
| 1977 | |
| 1978 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 1979 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 1980 | BT_DBG("skb %p len %d", skb, skb->len); |
| 1981 | hci_send_frame(skb); |
| 1982 | |
| 1983 | conn->sent++; |
| 1984 | if (conn->sent == ~0) |
| 1985 | conn->sent = 0; |
| 1986 | } |
| 1987 | } |
| 1988 | } |
| 1989 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 1990 | static inline void hci_sched_esco(struct hci_dev *hdev) |
| 1991 | { |
| 1992 | struct hci_conn *conn; |
| 1993 | struct sk_buff *skb; |
| 1994 | int quote; |
| 1995 | |
| 1996 | BT_DBG("%s", hdev->name); |
| 1997 | |
| 1998 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
| 1999 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2000 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2001 | hci_send_frame(skb); |
| 2002 | |
| 2003 | conn->sent++; |
| 2004 | if (conn->sent == ~0) |
| 2005 | conn->sent = 0; |
| 2006 | } |
| 2007 | } |
| 2008 | } |
| 2009 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2010 | static inline void hci_sched_le(struct hci_dev *hdev) |
| 2011 | { |
| 2012 | struct hci_conn *conn; |
| 2013 | struct sk_buff *skb; |
| 2014 | int quote, cnt; |
| 2015 | |
| 2016 | BT_DBG("%s", hdev->name); |
| 2017 | |
| 2018 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2019 | /* LE tx timeout must be longer than maximum |
| 2020 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2021 | if (!hdev->le_cnt && hdev->le_pkts && |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2022 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2023 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2024 | } |
| 2025 | |
| 2026 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
| 2027 | while (cnt && (conn = hci_low_sent(hdev, LE_LINK, "e))) { |
| 2028 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2029 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2030 | |
| 2031 | hci_send_frame(skb); |
| 2032 | hdev->le_last_tx = jiffies; |
| 2033 | |
| 2034 | cnt--; |
| 2035 | conn->sent++; |
| 2036 | } |
| 2037 | } |
| 2038 | if (hdev->le_pkts) |
| 2039 | hdev->le_cnt = cnt; |
| 2040 | else |
| 2041 | hdev->acl_cnt = cnt; |
| 2042 | } |
| 2043 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | static void hci_tx_task(unsigned long arg) |
| 2045 | { |
| 2046 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2047 | struct sk_buff *skb; |
| 2048 | |
| 2049 | read_lock(&hci_task_lock); |
| 2050 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2051 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
| 2052 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | |
| 2054 | /* Schedule queues and send stuff to HCI driver */ |
| 2055 | |
| 2056 | hci_sched_acl(hdev); |
| 2057 | |
| 2058 | hci_sched_sco(hdev); |
| 2059 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2060 | hci_sched_esco(hdev); |
| 2061 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2062 | hci_sched_le(hdev); |
| 2063 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | /* Send next queued raw (unknown type) packet */ |
| 2065 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 2066 | hci_send_frame(skb); |
| 2067 | |
| 2068 | read_unlock(&hci_task_lock); |
| 2069 | } |
| 2070 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2071 | /* ----- HCI RX task (incoming data processing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | |
| 2073 | /* ACL data packet */ |
| 2074 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 2075 | { |
| 2076 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 2077 | struct hci_conn *conn; |
| 2078 | __u16 handle, flags; |
| 2079 | |
| 2080 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 2081 | |
| 2082 | handle = __le16_to_cpu(hdr->handle); |
| 2083 | flags = hci_flags(handle); |
| 2084 | handle = hci_handle(handle); |
| 2085 | |
| 2086 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); |
| 2087 | |
| 2088 | hdev->stat.acl_rx++; |
| 2089 | |
| 2090 | hci_dev_lock(hdev); |
| 2091 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2092 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2094 | if (conn) { |
| 2095 | register struct hci_proto *hp; |
| 2096 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2097 | hci_conn_enter_active_mode(conn); |
| 2098 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2100 | hp = hci_proto[HCI_PROTO_L2CAP]; |
| 2101 | if (hp && hp->recv_acldata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | hp->recv_acldata(conn, skb, flags); |
| 2103 | return; |
| 2104 | } |
| 2105 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2106 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | hdev->name, handle); |
| 2108 | } |
| 2109 | |
| 2110 | kfree_skb(skb); |
| 2111 | } |
| 2112 | |
| 2113 | /* SCO data packet */ |
| 2114 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 2115 | { |
| 2116 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 2117 | struct hci_conn *conn; |
| 2118 | __u16 handle; |
| 2119 | |
| 2120 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 2121 | |
| 2122 | handle = __le16_to_cpu(hdr->handle); |
| 2123 | |
| 2124 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); |
| 2125 | |
| 2126 | hdev->stat.sco_rx++; |
| 2127 | |
| 2128 | hci_dev_lock(hdev); |
| 2129 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2130 | hci_dev_unlock(hdev); |
| 2131 | |
| 2132 | if (conn) { |
| 2133 | register struct hci_proto *hp; |
| 2134 | |
| 2135 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2136 | hp = hci_proto[HCI_PROTO_SCO]; |
| 2137 | if (hp && hp->recv_scodata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | hp->recv_scodata(conn, skb); |
| 2139 | return; |
| 2140 | } |
| 2141 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2142 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | hdev->name, handle); |
| 2144 | } |
| 2145 | |
| 2146 | kfree_skb(skb); |
| 2147 | } |
| 2148 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 2149 | static void hci_rx_task(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | { |
| 2151 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2152 | struct sk_buff *skb; |
| 2153 | |
| 2154 | BT_DBG("%s", hdev->name); |
| 2155 | |
| 2156 | read_lock(&hci_task_lock); |
| 2157 | |
| 2158 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
| 2159 | if (atomic_read(&hdev->promisc)) { |
| 2160 | /* Send copy to the sockets */ |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 2161 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | } |
| 2163 | |
| 2164 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 2165 | kfree_skb(skb); |
| 2166 | continue; |
| 2167 | } |
| 2168 | |
| 2169 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 2170 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2171 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | case HCI_ACLDATA_PKT: |
| 2173 | case HCI_SCODATA_PKT: |
| 2174 | kfree_skb(skb); |
| 2175 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 2176 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | } |
| 2178 | |
| 2179 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2180 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | case HCI_EVENT_PKT: |
| 2182 | hci_event_packet(hdev, skb); |
| 2183 | break; |
| 2184 | |
| 2185 | case HCI_ACLDATA_PKT: |
| 2186 | BT_DBG("%s ACL data packet", hdev->name); |
| 2187 | hci_acldata_packet(hdev, skb); |
| 2188 | break; |
| 2189 | |
| 2190 | case HCI_SCODATA_PKT: |
| 2191 | BT_DBG("%s SCO data packet", hdev->name); |
| 2192 | hci_scodata_packet(hdev, skb); |
| 2193 | break; |
| 2194 | |
| 2195 | default: |
| 2196 | kfree_skb(skb); |
| 2197 | break; |
| 2198 | } |
| 2199 | } |
| 2200 | |
| 2201 | read_unlock(&hci_task_lock); |
| 2202 | } |
| 2203 | |
| 2204 | static void hci_cmd_task(unsigned long arg) |
| 2205 | { |
| 2206 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2207 | struct sk_buff *skb; |
| 2208 | |
| 2209 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); |
| 2210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 2212 | if (atomic_read(&hdev->cmd_cnt)) { |
| 2213 | skb = skb_dequeue(&hdev->cmd_q); |
| 2214 | if (!skb) |
| 2215 | return; |
| 2216 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 2217 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2219 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 2220 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | atomic_dec(&hdev->cmd_cnt); |
| 2222 | hci_send_frame(skb); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2223 | mod_timer(&hdev->cmd_timer, |
| 2224 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | } else { |
| 2226 | skb_queue_head(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2227 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | } |
| 2229 | } |
| 2230 | } |