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 |
Brian Gix | 3cd6204 | 2012-01-11 15:18:17 -0800 | [diff] [blame^] | 3 | Copyright (c) 2000-2001, 2010-2012 Code Aurora Forum. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Vinicius Costa Gomes | 09fabbc | 2011-06-09 18:50:43 -0300 | [diff] [blame] | 45 | #include <linux/crypto.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <net/sock.h> |
| 47 | |
| 48 | #include <asm/system.h> |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 49 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <asm/unaligned.h> |
| 51 | |
| 52 | #include <net/bluetooth/bluetooth.h> |
| 53 | #include <net/bluetooth/hci_core.h> |
| 54 | |
Mat Martineau | f058a44 | 2011-08-26 09:33:32 -0700 | [diff] [blame] | 55 | #define AUTO_OFF_TIMEOUT 2000 |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | static void hci_cmd_task(unsigned long arg); |
| 58 | static void hci_rx_task(unsigned long arg); |
| 59 | static void hci_tx_task(unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | static DEFINE_RWLOCK(hci_task_lock); |
| 62 | |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 63 | static int enable_smp = 1; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | /* HCI device list */ |
| 66 | LIST_HEAD(hci_dev_list); |
| 67 | DEFINE_RWLOCK(hci_dev_list_lock); |
| 68 | |
| 69 | /* HCI callback list */ |
| 70 | LIST_HEAD(hci_cb_list); |
| 71 | DEFINE_RWLOCK(hci_cb_list_lock); |
| 72 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 73 | /* AMP Manager event callbacks */ |
| 74 | LIST_HEAD(amp_mgr_cb_list); |
| 75 | DEFINE_RWLOCK(amp_mgr_cb_list_lock); |
| 76 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | /* HCI protocols */ |
| 78 | #define HCI_MAX_PROTO 2 |
| 79 | struct hci_proto *hci_proto[HCI_MAX_PROTO]; |
| 80 | |
| 81 | /* HCI notifiers list */ |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 82 | static ATOMIC_NOTIFIER_HEAD(hci_notifier); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | /* ---- HCI notifications ---- */ |
| 85 | |
| 86 | int hci_register_notifier(struct notifier_block *nb) |
| 87 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 88 | return atomic_notifier_chain_register(&hci_notifier, nb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | int hci_unregister_notifier(struct notifier_block *nb) |
| 92 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 93 | return atomic_notifier_chain_unregister(&hci_notifier, nb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | } |
| 95 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 96 | static void hci_notify(struct hci_dev *hdev, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 98 | atomic_notifier_call_chain(&hci_notifier, event, hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* ---- HCI requests ---- */ |
| 102 | |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 103 | void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | { |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 105 | BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); |
| 106 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 107 | /* If this is the init phase check if the completed command matches |
| 108 | * the last init command, and if not just return. |
| 109 | */ |
| 110 | if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) |
Johan Hedberg | 23bb576 | 2010-12-21 23:01:27 +0200 | [diff] [blame] | 111 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | if (hdev->req_status == HCI_REQ_PEND) { |
| 114 | hdev->req_result = result; |
| 115 | hdev->req_status = HCI_REQ_DONE; |
| 116 | wake_up_interruptible(&hdev->req_wait_q); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | static void hci_req_cancel(struct hci_dev *hdev, int err) |
| 121 | { |
| 122 | BT_DBG("%s err 0x%2.2x", hdev->name, err); |
| 123 | |
| 124 | if (hdev->req_status == HCI_REQ_PEND) { |
| 125 | hdev->req_result = err; |
| 126 | hdev->req_status = HCI_REQ_CANCELED; |
| 127 | wake_up_interruptible(&hdev->req_wait_q); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /* Execute request and wait for completion. */ |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 132 | 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] | 133 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | { |
| 135 | DECLARE_WAITQUEUE(wait, current); |
| 136 | int err = 0; |
| 137 | |
| 138 | BT_DBG("%s start", hdev->name); |
| 139 | |
| 140 | hdev->req_status = HCI_REQ_PEND; |
| 141 | |
| 142 | add_wait_queue(&hdev->req_wait_q, &wait); |
| 143 | set_current_state(TASK_INTERRUPTIBLE); |
| 144 | |
| 145 | req(hdev, opt); |
| 146 | schedule_timeout(timeout); |
| 147 | |
| 148 | remove_wait_queue(&hdev->req_wait_q, &wait); |
| 149 | |
| 150 | if (signal_pending(current)) |
| 151 | return -EINTR; |
| 152 | |
| 153 | switch (hdev->req_status) { |
| 154 | case HCI_REQ_DONE: |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 155 | err = -bt_err(hdev->req_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | break; |
| 157 | |
| 158 | case HCI_REQ_CANCELED: |
| 159 | err = -hdev->req_result; |
| 160 | break; |
| 161 | |
| 162 | default: |
| 163 | err = -ETIMEDOUT; |
| 164 | break; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 165 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 167 | hdev->req_status = hdev->req_result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
| 169 | BT_DBG("%s end: err %d", hdev->name, err); |
| 170 | |
| 171 | return err; |
| 172 | } |
| 173 | |
| 174 | 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] | 175 | unsigned long opt, __u32 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | { |
| 177 | int ret; |
| 178 | |
Marcel Holtmann | 7c6a329 | 2008-09-12 03:11:54 +0200 | [diff] [blame] | 179 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 180 | return -ENETDOWN; |
| 181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | /* Serialize all requests */ |
| 183 | hci_req_lock(hdev); |
| 184 | ret = __hci_request(hdev, req, opt, timeout); |
| 185 | hci_req_unlock(hdev); |
| 186 | |
| 187 | return ret; |
| 188 | } |
| 189 | |
| 190 | static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) |
| 191 | { |
| 192 | BT_DBG("%s %ld", hdev->name, opt); |
| 193 | |
| 194 | /* Reset device */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 195 | set_bit(HCI_RESET, &hdev->flags); |
Brian Gix | 6e4531c | 2011-10-28 16:12:08 -0700 | [diff] [blame] | 196 | memset(&hdev->features, 0, sizeof(hdev->features)); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 197 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | static void hci_init_req(struct hci_dev *hdev, unsigned long opt) |
| 201 | { |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 202 | struct hci_cp_delete_stored_link_key cp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | struct sk_buff *skb; |
Marcel Holtmann | 1ebb925 | 2005-11-08 09:57:21 -0800 | [diff] [blame] | 204 | __le16 param; |
Marcel Holtmann | 89f2783 | 2007-09-09 08:39:49 +0200 | [diff] [blame] | 205 | __u8 flt_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
| 207 | BT_DBG("%s %ld", hdev->name, opt); |
| 208 | |
| 209 | /* Driver initialization */ |
| 210 | |
| 211 | /* Special commands */ |
| 212 | while ((skb = skb_dequeue(&hdev->driver_init))) { |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 213 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 217 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | } |
| 219 | skb_queue_purge(&hdev->driver_init); |
| 220 | |
| 221 | /* Mandatory initialization */ |
| 222 | |
| 223 | /* Reset */ |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 224 | if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) { |
| 225 | set_bit(HCI_RESET, &hdev->flags); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 226 | hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); |
Gustavo F. Padovan | f630cf0 | 2011-03-16 15:36:29 -0300 | [diff] [blame] | 227 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 229 | /* Read Local Version */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 230 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
Marcel Holtmann | 1143e5a | 2006-09-23 09:57:20 +0200 | [diff] [blame] | 231 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 232 | |
| 233 | /* Set default HCI Flow Control Mode */ |
| 234 | if (hdev->dev_type == HCI_BREDR) |
| 235 | hdev->flow_ctl_mode = HCI_PACKET_BASED_FLOW_CTL_MODE; |
| 236 | else |
| 237 | hdev->flow_ctl_mode = HCI_BLOCK_BASED_FLOW_CTL_MODE; |
| 238 | |
| 239 | /* Read HCI Flow Control Mode */ |
| 240 | hci_send_cmd(hdev, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 243 | hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 245 | /* Read Data Block Size (ACL mtu, max pkt, etc.) */ |
| 246 | hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
| 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | #if 0 |
| 249 | /* Host buffer size */ |
| 250 | { |
| 251 | struct hci_cp_host_buffer_size cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 252 | cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | cp.sco_mtu = HCI_MAX_SCO_SIZE; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 254 | cp.acl_max_pkt = cpu_to_le16(0xffff); |
| 255 | cp.sco_max_pkt = cpu_to_le16(0xffff); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 256 | hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | } |
| 258 | #endif |
| 259 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 260 | if (hdev->dev_type == HCI_BREDR) { |
| 261 | /* BR-EDR initialization */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 262 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 263 | /* Read Local Supported Features */ |
| 264 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 265 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 266 | /* Read BD Address */ |
| 267 | hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 269 | /* Read Class of Device */ |
| 270 | hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 272 | /* Read Local Name */ |
| 273 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 275 | /* Read Voice Setting */ |
| 276 | hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 278 | /* Optional initialization */ |
| 279 | /* Clear Event Filters */ |
| 280 | flt_type = HCI_FLT_CLEAR_ALL; |
| 281 | hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
Johan Hedberg | b0916ea | 2011-01-10 13:44:55 +0200 | [diff] [blame] | 282 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 283 | /* Connection accept timeout ~20 secs */ |
| 284 | param = cpu_to_le16(0x7d00); |
| 285 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
| 286 | |
| 287 | bacpy(&cp.bdaddr, BDADDR_ANY); |
| 288 | cp.delete_all = 1; |
| 289 | hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, |
| 290 | sizeof(cp), &cp); |
| 291 | } else { |
| 292 | /* AMP initialization */ |
| 293 | /* Connection accept timeout ~5 secs */ |
| 294 | param = cpu_to_le16(0x1f40); |
| 295 | hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
| 296 | |
| 297 | /* Read AMP Info */ |
| 298 | hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
| 299 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 302 | static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) |
| 303 | { |
| 304 | BT_DBG("%s", hdev->name); |
| 305 | |
| 306 | /* Read LE buffer size */ |
| 307 | hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
| 308 | } |
| 309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) |
| 311 | { |
| 312 | __u8 scan = opt; |
| 313 | |
| 314 | BT_DBG("%s %x", hdev->name, scan); |
| 315 | |
| 316 | /* Inquiry and Page scans */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 317 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) |
| 321 | { |
| 322 | __u8 auth = opt; |
| 323 | |
| 324 | BT_DBG("%s %x", hdev->name, auth); |
| 325 | |
| 326 | /* Authentication */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 327 | hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) |
| 331 | { |
| 332 | __u8 encrypt = opt; |
| 333 | |
| 334 | BT_DBG("%s %x", hdev->name, encrypt); |
| 335 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 336 | /* Encryption */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 337 | hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 340 | static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) |
| 341 | { |
| 342 | __le16 policy = cpu_to_le16(opt); |
| 343 | |
Marcel Holtmann | a418b89 | 2008-11-30 12:17:28 +0100 | [diff] [blame] | 344 | BT_DBG("%s %x", hdev->name, policy); |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 345 | |
| 346 | /* Default link policy */ |
| 347 | hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
| 348 | } |
| 349 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 350 | /* Get HCI device by index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | * Device is held on return. */ |
| 352 | struct hci_dev *hci_dev_get(int index) |
| 353 | { |
| 354 | struct hci_dev *hdev = NULL; |
| 355 | struct list_head *p; |
| 356 | |
| 357 | BT_DBG("%d", index); |
| 358 | |
| 359 | if (index < 0) |
| 360 | return NULL; |
| 361 | |
| 362 | read_lock(&hci_dev_list_lock); |
| 363 | list_for_each(p, &hci_dev_list) { |
| 364 | struct hci_dev *d = list_entry(p, struct hci_dev, list); |
| 365 | if (d->id == index) { |
| 366 | hdev = hci_dev_hold(d); |
| 367 | break; |
| 368 | } |
| 369 | } |
| 370 | read_unlock(&hci_dev_list_lock); |
| 371 | return hdev; |
| 372 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 373 | EXPORT_SYMBOL(hci_dev_get); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | /* ---- Inquiry support ---- */ |
| 376 | static void inquiry_cache_flush(struct hci_dev *hdev) |
| 377 | { |
| 378 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 379 | struct inquiry_entry *next = cache->list, *e; |
| 380 | |
| 381 | BT_DBG("cache %p", cache); |
| 382 | |
| 383 | cache->list = NULL; |
| 384 | while ((e = next)) { |
| 385 | next = e->next; |
| 386 | kfree(e); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 391 | { |
| 392 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 393 | struct inquiry_entry *e; |
| 394 | |
| 395 | BT_DBG("cache %p, %s", cache, batostr(bdaddr)); |
| 396 | |
| 397 | for (e = cache->list; e; e = e->next) |
| 398 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
| 399 | break; |
| 400 | return e; |
| 401 | } |
| 402 | |
| 403 | void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) |
| 404 | { |
| 405 | struct inquiry_cache *cache = &hdev->inq_cache; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 406 | struct inquiry_entry *ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
| 408 | BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); |
| 409 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 410 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
| 411 | if (!ie) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | /* Entry not in the cache. Add new one. */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 413 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); |
| 414 | if (!ie) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | return; |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 416 | |
| 417 | ie->next = cache->list; |
| 418 | cache->list = ie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 421 | memcpy(&ie->data, data, sizeof(*data)); |
| 422 | ie->timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | cache->timestamp = jiffies; |
| 424 | } |
| 425 | |
| 426 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) |
| 427 | { |
| 428 | struct inquiry_cache *cache = &hdev->inq_cache; |
| 429 | struct inquiry_info *info = (struct inquiry_info *) buf; |
| 430 | struct inquiry_entry *e; |
| 431 | int copied = 0; |
| 432 | |
| 433 | for (e = cache->list; e && copied < num; e = e->next, copied++) { |
| 434 | struct inquiry_data *data = &e->data; |
| 435 | bacpy(&info->bdaddr, &data->bdaddr); |
| 436 | info->pscan_rep_mode = data->pscan_rep_mode; |
| 437 | info->pscan_period_mode = data->pscan_period_mode; |
| 438 | info->pscan_mode = data->pscan_mode; |
| 439 | memcpy(info->dev_class, data->dev_class, 3); |
| 440 | info->clock_offset = data->clock_offset; |
| 441 | info++; |
| 442 | } |
| 443 | |
| 444 | BT_DBG("cache %p, copied %d", cache, copied); |
| 445 | return copied; |
| 446 | } |
| 447 | |
| 448 | static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) |
| 449 | { |
| 450 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; |
| 451 | struct hci_cp_inquiry cp; |
| 452 | |
| 453 | BT_DBG("%s", hdev->name); |
| 454 | |
| 455 | if (test_bit(HCI_INQUIRY, &hdev->flags)) |
| 456 | return; |
| 457 | |
| 458 | /* Start Inquiry */ |
| 459 | memcpy(&cp.lap, &ir->lap, 3); |
| 460 | cp.length = ir->length; |
| 461 | cp.num_rsp = ir->num_rsp; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 462 | hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | int hci_inquiry(void __user *arg) |
| 466 | { |
| 467 | __u8 __user *ptr = arg; |
| 468 | struct hci_inquiry_req ir; |
| 469 | struct hci_dev *hdev; |
| 470 | int err = 0, do_inquiry = 0, max_rsp; |
| 471 | long timeo; |
| 472 | __u8 *buf; |
| 473 | |
| 474 | if (copy_from_user(&ir, ptr, sizeof(ir))) |
| 475 | return -EFAULT; |
| 476 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 477 | hdev = hci_dev_get(ir.dev_id); |
| 478 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | return -ENODEV; |
| 480 | |
| 481 | hci_dev_lock_bh(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 482 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 483 | inquiry_cache_empty(hdev) || |
| 484 | ir.flags & IREQ_CACHE_FLUSH) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | inquiry_cache_flush(hdev); |
| 486 | do_inquiry = 1; |
| 487 | } |
| 488 | hci_dev_unlock_bh(hdev); |
| 489 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 490 | timeo = ir.length * msecs_to_jiffies(2000); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 491 | |
| 492 | if (do_inquiry) { |
| 493 | err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); |
| 494 | if (err < 0) |
| 495 | goto done; |
| 496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | /* for unlimited number of responses we will use buffer with 255 entries */ |
| 499 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
| 500 | |
| 501 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then |
| 502 | * copy it to the user space. |
| 503 | */ |
Szymon Janc | 01df8c3 | 2011-02-17 16:46:47 +0100 | [diff] [blame] | 504 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 505 | if (!buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | err = -ENOMEM; |
| 507 | goto done; |
| 508 | } |
| 509 | |
| 510 | hci_dev_lock_bh(hdev); |
| 511 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
| 512 | hci_dev_unlock_bh(hdev); |
| 513 | |
| 514 | BT_DBG("num_rsp %d", ir.num_rsp); |
| 515 | |
| 516 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { |
| 517 | ptr += sizeof(ir); |
| 518 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * |
| 519 | ir.num_rsp)) |
| 520 | err = -EFAULT; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 521 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | err = -EFAULT; |
| 523 | |
| 524 | kfree(buf); |
| 525 | |
| 526 | done: |
| 527 | hci_dev_put(hdev); |
| 528 | return err; |
| 529 | } |
| 530 | |
| 531 | /* ---- HCI ioctl helpers ---- */ |
| 532 | |
| 533 | int hci_dev_open(__u16 dev) |
| 534 | { |
| 535 | struct hci_dev *hdev; |
| 536 | int ret = 0; |
| 537 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 538 | hdev = hci_dev_get(dev); |
| 539 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | return -ENODEV; |
| 541 | |
| 542 | BT_DBG("%s %p", hdev->name, hdev); |
| 543 | |
| 544 | hci_req_lock(hdev); |
| 545 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 546 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { |
| 547 | ret = -ERFKILL; |
| 548 | goto done; |
| 549 | } |
| 550 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | if (test_bit(HCI_UP, &hdev->flags)) { |
| 552 | ret = -EALREADY; |
| 553 | goto done; |
| 554 | } |
| 555 | |
| 556 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 557 | set_bit(HCI_RAW, &hdev->flags); |
| 558 | |
| 559 | if (hdev->open(hdev)) { |
| 560 | ret = -EIO; |
| 561 | goto done; |
| 562 | } |
| 563 | |
| 564 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 565 | atomic_set(&hdev->cmd_cnt, 1); |
| 566 | set_bit(HCI_INIT, &hdev->flags); |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 567 | hdev->init_last_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 569 | ret = __hci_request(hdev, hci_init_req, 0, |
| 570 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 572 | if (lmp_le_capable(hdev)) |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 573 | ret = __hci_request(hdev, hci_le_init_req, 0, |
| 574 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
| 575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | clear_bit(HCI_INIT, &hdev->flags); |
| 577 | } |
| 578 | |
| 579 | if (!ret) { |
| 580 | hci_dev_hold(hdev); |
| 581 | set_bit(HCI_UP, &hdev->flags); |
| 582 | hci_notify(hdev, HCI_DEV_UP); |
Peter Krystad | 1fc4407 | 2011-08-30 15:38:12 -0700 | [diff] [blame] | 583 | if (!test_bit(HCI_SETUP, &hdev->flags) && |
Subramanian Srinivasan | a727a49 | 2011-11-30 13:06:07 -0800 | [diff] [blame] | 584 | hdev->dev_type == HCI_BREDR) { |
| 585 | hci_dev_lock_bh(hdev); |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 586 | mgmt_powered(hdev->id, 1); |
Subramanian Srinivasan | a727a49 | 2011-11-30 13:06:07 -0800 | [diff] [blame] | 587 | hci_dev_unlock_bh(hdev); |
| 588 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 589 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* Init failed, cleanup */ |
| 591 | tasklet_kill(&hdev->rx_task); |
| 592 | tasklet_kill(&hdev->tx_task); |
| 593 | tasklet_kill(&hdev->cmd_task); |
| 594 | |
| 595 | skb_queue_purge(&hdev->cmd_q); |
| 596 | skb_queue_purge(&hdev->rx_q); |
| 597 | |
| 598 | if (hdev->flush) |
| 599 | hdev->flush(hdev); |
| 600 | |
| 601 | if (hdev->sent_cmd) { |
| 602 | kfree_skb(hdev->sent_cmd); |
| 603 | hdev->sent_cmd = NULL; |
| 604 | } |
| 605 | |
| 606 | hdev->close(hdev); |
| 607 | hdev->flags = 0; |
| 608 | } |
| 609 | |
| 610 | done: |
| 611 | hci_req_unlock(hdev); |
| 612 | hci_dev_put(hdev); |
| 613 | return ret; |
| 614 | } |
| 615 | |
| 616 | static int hci_dev_do_close(struct hci_dev *hdev) |
| 617 | { |
Mat Martineau | 4106b99 | 2011-11-18 15:26:21 -0800 | [diff] [blame] | 618 | unsigned long keepflags = 0; |
| 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | BT_DBG("%s %p", hdev->name, hdev); |
| 621 | |
| 622 | hci_req_cancel(hdev, ENODEV); |
| 623 | hci_req_lock(hdev); |
| 624 | |
| 625 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 626 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | hci_req_unlock(hdev); |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | /* Kill RX and TX tasks */ |
| 632 | tasklet_kill(&hdev->rx_task); |
| 633 | tasklet_kill(&hdev->tx_task); |
| 634 | |
| 635 | hci_dev_lock_bh(hdev); |
| 636 | inquiry_cache_flush(hdev); |
| 637 | hci_conn_hash_flush(hdev); |
| 638 | hci_dev_unlock_bh(hdev); |
| 639 | |
| 640 | hci_notify(hdev, HCI_DEV_DOWN); |
| 641 | |
Bhasker Neti | ffdff57 | 2011-12-21 17:24:01 -0800 | [diff] [blame] | 642 | if (hdev->dev_type == HCI_BREDR) { |
| 643 | hci_dev_lock_bh(hdev); |
| 644 | mgmt_powered(hdev->id, 0); |
| 645 | hci_dev_unlock_bh(hdev); |
| 646 | } |
| 647 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | if (hdev->flush) |
| 649 | hdev->flush(hdev); |
| 650 | |
| 651 | /* Reset device */ |
| 652 | skb_queue_purge(&hdev->cmd_q); |
| 653 | atomic_set(&hdev->cmd_cnt, 1); |
| 654 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 655 | set_bit(HCI_INIT, &hdev->flags); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 656 | __hci_request(hdev, hci_reset_req, 0, |
| 657 | msecs_to_jiffies(250)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | clear_bit(HCI_INIT, &hdev->flags); |
| 659 | } |
| 660 | |
| 661 | /* Kill cmd task */ |
| 662 | tasklet_kill(&hdev->cmd_task); |
| 663 | |
| 664 | /* Drop queues */ |
| 665 | skb_queue_purge(&hdev->rx_q); |
| 666 | skb_queue_purge(&hdev->cmd_q); |
| 667 | skb_queue_purge(&hdev->raw_q); |
| 668 | |
| 669 | /* Drop last sent command */ |
| 670 | if (hdev->sent_cmd) { |
Vinicius Costa Gomes | b79f44c | 2011-04-11 18:46:55 -0300 | [diff] [blame] | 671 | del_timer_sync(&hdev->cmd_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | kfree_skb(hdev->sent_cmd); |
| 673 | hdev->sent_cmd = NULL; |
| 674 | } |
| 675 | |
| 676 | /* After this point our queues are empty |
| 677 | * and no tasks are scheduled. */ |
| 678 | hdev->close(hdev); |
| 679 | |
Mat Martineau | 4106b99 | 2011-11-18 15:26:21 -0800 | [diff] [blame] | 680 | /* Clear only non-persistent flags */ |
| 681 | if (test_bit(HCI_MGMT, &hdev->flags)) |
| 682 | set_bit(HCI_MGMT, &keepflags); |
| 683 | if (test_bit(HCI_LINK_KEYS, &hdev->flags)) |
| 684 | set_bit(HCI_LINK_KEYS, &keepflags); |
| 685 | if (test_bit(HCI_DEBUG_KEYS, &hdev->flags)) |
| 686 | set_bit(HCI_DEBUG_KEYS, &keepflags); |
| 687 | |
| 688 | hdev->flags = keepflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | hci_req_unlock(hdev); |
| 691 | |
| 692 | hci_dev_put(hdev); |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | int hci_dev_close(__u16 dev) |
| 697 | { |
| 698 | struct hci_dev *hdev; |
| 699 | int err; |
| 700 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 701 | hdev = hci_dev_get(dev); |
| 702 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | return -ENODEV; |
| 704 | err = hci_dev_do_close(hdev); |
| 705 | hci_dev_put(hdev); |
| 706 | return err; |
| 707 | } |
| 708 | |
| 709 | int hci_dev_reset(__u16 dev) |
| 710 | { |
| 711 | struct hci_dev *hdev; |
| 712 | int ret = 0; |
| 713 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 714 | hdev = hci_dev_get(dev); |
| 715 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | return -ENODEV; |
| 717 | |
| 718 | hci_req_lock(hdev); |
| 719 | tasklet_disable(&hdev->tx_task); |
| 720 | |
| 721 | if (!test_bit(HCI_UP, &hdev->flags)) |
| 722 | goto done; |
| 723 | |
| 724 | /* Drop queues */ |
| 725 | skb_queue_purge(&hdev->rx_q); |
| 726 | skb_queue_purge(&hdev->cmd_q); |
| 727 | |
| 728 | hci_dev_lock_bh(hdev); |
| 729 | inquiry_cache_flush(hdev); |
| 730 | hci_conn_hash_flush(hdev); |
| 731 | hci_dev_unlock_bh(hdev); |
| 732 | |
| 733 | if (hdev->flush) |
| 734 | hdev->flush(hdev); |
| 735 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 736 | atomic_set(&hdev->cmd_cnt, 1); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 737 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
| 739 | if (!test_bit(HCI_RAW, &hdev->flags)) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 740 | ret = __hci_request(hdev, hci_reset_req, 0, |
| 741 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | done: |
| 744 | tasklet_enable(&hdev->tx_task); |
| 745 | hci_req_unlock(hdev); |
| 746 | hci_dev_put(hdev); |
| 747 | return ret; |
| 748 | } |
| 749 | |
| 750 | int hci_dev_reset_stat(__u16 dev) |
| 751 | { |
| 752 | struct hci_dev *hdev; |
| 753 | int ret = 0; |
| 754 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 755 | hdev = hci_dev_get(dev); |
| 756 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | return -ENODEV; |
| 758 | |
| 759 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 760 | |
| 761 | hci_dev_put(hdev); |
| 762 | |
| 763 | return ret; |
| 764 | } |
| 765 | |
| 766 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
| 767 | { |
| 768 | struct hci_dev *hdev; |
| 769 | struct hci_dev_req dr; |
| 770 | int err = 0; |
| 771 | |
| 772 | if (copy_from_user(&dr, arg, sizeof(dr))) |
| 773 | return -EFAULT; |
| 774 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 775 | hdev = hci_dev_get(dr.dev_id); |
| 776 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | return -ENODEV; |
| 778 | |
| 779 | switch (cmd) { |
| 780 | case HCISETAUTH: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 781 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 782 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | break; |
| 784 | |
| 785 | case HCISETENCRYPT: |
| 786 | if (!lmp_encrypt_capable(hdev)) { |
| 787 | err = -EOPNOTSUPP; |
| 788 | break; |
| 789 | } |
| 790 | |
| 791 | if (!test_bit(HCI_AUTH, &hdev->flags)) { |
| 792 | /* Auth must be enabled first */ |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 793 | err = hci_request(hdev, hci_auth_req, dr.dev_opt, |
| 794 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (err) |
| 796 | break; |
| 797 | } |
| 798 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 799 | err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, |
| 800 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | break; |
| 802 | |
| 803 | case HCISETSCAN: |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 804 | err = hci_request(hdev, hci_scan_req, dr.dev_opt, |
| 805 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | break; |
| 807 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 808 | case HCISETLINKPOL: |
| 809 | err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, |
| 810 | msecs_to_jiffies(HCI_INIT_TIMEOUT)); |
| 811 | break; |
| 812 | |
| 813 | case HCISETLINKMODE: |
| 814 | hdev->link_mode = ((__u16) dr.dev_opt) & |
| 815 | (HCI_LM_MASTER | HCI_LM_ACCEPT); |
| 816 | break; |
| 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | case HCISETPTYPE: |
| 819 | hdev->pkt_type = (__u16) dr.dev_opt; |
| 820 | break; |
| 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | case HCISETACLMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 823 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 824 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | break; |
| 826 | |
| 827 | case HCISETSCOMTU: |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 828 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
| 829 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | break; |
| 831 | |
| 832 | default: |
| 833 | err = -EINVAL; |
| 834 | break; |
| 835 | } |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 836 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | hci_dev_put(hdev); |
| 838 | return err; |
| 839 | } |
| 840 | |
| 841 | int hci_get_dev_list(void __user *arg) |
| 842 | { |
| 843 | struct hci_dev_list_req *dl; |
| 844 | struct hci_dev_req *dr; |
| 845 | struct list_head *p; |
| 846 | int n = 0, size, err; |
| 847 | __u16 dev_num; |
| 848 | |
| 849 | if (get_user(dev_num, (__u16 __user *) arg)) |
| 850 | return -EFAULT; |
| 851 | |
| 852 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) |
| 853 | return -EINVAL; |
| 854 | |
| 855 | size = sizeof(*dl) + dev_num * sizeof(*dr); |
| 856 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 857 | dl = kzalloc(size, GFP_KERNEL); |
| 858 | if (!dl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | return -ENOMEM; |
| 860 | |
| 861 | dr = dl->dev_req; |
| 862 | |
| 863 | read_lock_bh(&hci_dev_list_lock); |
| 864 | list_for_each(p, &hci_dev_list) { |
| 865 | struct hci_dev *hdev; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 866 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | hdev = list_entry(p, struct hci_dev, list); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 868 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 869 | hci_del_off_timer(hdev); |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 870 | |
| 871 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 872 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | (dr + n)->dev_id = hdev->id; |
| 875 | (dr + n)->dev_opt = hdev->flags; |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | if (++n >= dev_num) |
| 878 | break; |
| 879 | } |
| 880 | read_unlock_bh(&hci_dev_list_lock); |
| 881 | |
| 882 | dl->dev_num = n; |
| 883 | size = sizeof(*dl) + n * sizeof(*dr); |
| 884 | |
| 885 | err = copy_to_user(arg, dl, size); |
| 886 | kfree(dl); |
| 887 | |
| 888 | return err ? -EFAULT : 0; |
| 889 | } |
| 890 | |
| 891 | int hci_get_dev_info(void __user *arg) |
| 892 | { |
| 893 | struct hci_dev *hdev; |
| 894 | struct hci_dev_info di; |
| 895 | int err = 0; |
| 896 | |
| 897 | if (copy_from_user(&di, arg, sizeof(di))) |
| 898 | return -EFAULT; |
| 899 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 900 | hdev = hci_dev_get(di.dev_id); |
| 901 | if (!hdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | return -ENODEV; |
| 903 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 904 | hci_del_off_timer(hdev); |
| 905 | |
Johan Hedberg | c542a06 | 2011-01-26 13:11:03 +0200 | [diff] [blame] | 906 | if (!test_bit(HCI_MGMT, &hdev->flags)) |
| 907 | set_bit(HCI_PAIRABLE, &hdev->flags); |
| 908 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | strcpy(di.name, hdev->name); |
| 910 | di.bdaddr = hdev->bdaddr; |
Marcel Holtmann | 943da25 | 2010-02-13 02:28:41 +0100 | [diff] [blame] | 911 | di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | di.flags = hdev->flags; |
| 913 | di.pkt_type = hdev->pkt_type; |
| 914 | di.acl_mtu = hdev->acl_mtu; |
| 915 | di.acl_pkts = hdev->acl_pkts; |
| 916 | di.sco_mtu = hdev->sco_mtu; |
| 917 | di.sco_pkts = hdev->sco_pkts; |
| 918 | di.link_policy = hdev->link_policy; |
| 919 | di.link_mode = hdev->link_mode; |
| 920 | |
| 921 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); |
| 922 | memcpy(&di.features, &hdev->features, sizeof(di.features)); |
| 923 | |
| 924 | if (copy_to_user(arg, &di, sizeof(di))) |
| 925 | err = -EFAULT; |
| 926 | |
| 927 | hci_dev_put(hdev); |
| 928 | |
| 929 | return err; |
| 930 | } |
| 931 | |
| 932 | /* ---- Interface to HCI drivers ---- */ |
| 933 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 934 | static int hci_rfkill_set_block(void *data, bool blocked) |
| 935 | { |
| 936 | struct hci_dev *hdev = data; |
| 937 | |
| 938 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); |
| 939 | |
| 940 | if (!blocked) |
| 941 | return 0; |
| 942 | |
| 943 | hci_dev_do_close(hdev); |
| 944 | |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | static const struct rfkill_ops hci_rfkill_ops = { |
| 949 | .set_block = hci_rfkill_set_block, |
| 950 | }; |
| 951 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | /* Alloc HCI device */ |
| 953 | struct hci_dev *hci_alloc_dev(void) |
| 954 | { |
| 955 | struct hci_dev *hdev; |
| 956 | |
Marcel Holtmann | 25ea6db | 2006-07-06 15:40:09 +0200 | [diff] [blame] | 957 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | if (!hdev) |
| 959 | return NULL; |
| 960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | skb_queue_head_init(&hdev->driver_init); |
| 962 | |
| 963 | return hdev; |
| 964 | } |
| 965 | EXPORT_SYMBOL(hci_alloc_dev); |
| 966 | |
| 967 | /* Free HCI device */ |
| 968 | void hci_free_dev(struct hci_dev *hdev) |
| 969 | { |
| 970 | skb_queue_purge(&hdev->driver_init); |
| 971 | |
Marcel Holtmann | a91f2e3 | 2006-07-03 10:02:41 +0200 | [diff] [blame] | 972 | /* will free via device release */ |
| 973 | put_device(&hdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | } |
| 975 | EXPORT_SYMBOL(hci_free_dev); |
| 976 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 977 | static void hci_power_on(struct work_struct *work) |
| 978 | { |
| 979 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); |
Inga Stotland | 5029fc2 | 2011-09-12 15:22:52 -0700 | [diff] [blame] | 980 | int err; |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 981 | |
| 982 | BT_DBG("%s", hdev->name); |
| 983 | |
Inga Stotland | 5029fc2 | 2011-09-12 15:22:52 -0700 | [diff] [blame] | 984 | err = hci_dev_open(hdev->id); |
| 985 | if (err && err != -EALREADY) |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 986 | return; |
| 987 | |
Peter Krystad | 1fc4407 | 2011-08-30 15:38:12 -0700 | [diff] [blame] | 988 | if (test_bit(HCI_AUTO_OFF, &hdev->flags) && |
| 989 | hdev->dev_type == HCI_BREDR) |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 990 | mod_timer(&hdev->off_timer, |
| 991 | jiffies + msecs_to_jiffies(AUTO_OFF_TIMEOUT)); |
| 992 | |
Peter Krystad | 1fc4407 | 2011-08-30 15:38:12 -0700 | [diff] [blame] | 993 | if (test_and_clear_bit(HCI_SETUP, &hdev->flags) && |
| 994 | hdev->dev_type == HCI_BREDR) |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 995 | mgmt_index_added(hdev->id); |
| 996 | } |
| 997 | |
| 998 | static void hci_power_off(struct work_struct *work) |
| 999 | { |
| 1000 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_off); |
| 1001 | |
| 1002 | BT_DBG("%s", hdev->name); |
| 1003 | |
| 1004 | hci_dev_close(hdev->id); |
| 1005 | } |
| 1006 | |
| 1007 | static void hci_auto_off(unsigned long data) |
| 1008 | { |
| 1009 | struct hci_dev *hdev = (struct hci_dev *) data; |
| 1010 | |
| 1011 | BT_DBG("%s", hdev->name); |
| 1012 | |
| 1013 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 1014 | |
| 1015 | queue_work(hdev->workqueue, &hdev->power_off); |
| 1016 | } |
| 1017 | |
| 1018 | void hci_del_off_timer(struct hci_dev *hdev) |
| 1019 | { |
| 1020 | BT_DBG("%s", hdev->name); |
| 1021 | |
| 1022 | clear_bit(HCI_AUTO_OFF, &hdev->flags); |
| 1023 | del_timer(&hdev->off_timer); |
| 1024 | } |
| 1025 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1026 | int hci_uuids_clear(struct hci_dev *hdev) |
| 1027 | { |
| 1028 | struct list_head *p, *n; |
| 1029 | |
| 1030 | list_for_each_safe(p, n, &hdev->uuids) { |
| 1031 | struct bt_uuid *uuid; |
| 1032 | |
| 1033 | uuid = list_entry(p, struct bt_uuid, list); |
| 1034 | |
| 1035 | list_del(p); |
| 1036 | kfree(uuid); |
| 1037 | } |
| 1038 | |
| 1039 | return 0; |
| 1040 | } |
| 1041 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1042 | int hci_link_keys_clear(struct hci_dev *hdev) |
| 1043 | { |
| 1044 | struct list_head *p, *n; |
| 1045 | |
| 1046 | list_for_each_safe(p, n, &hdev->link_keys) { |
| 1047 | struct link_key *key; |
| 1048 | |
| 1049 | key = list_entry(p, struct link_key, list); |
| 1050 | |
| 1051 | list_del(p); |
| 1052 | kfree(key); |
| 1053 | } |
| 1054 | |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1059 | { |
| 1060 | struct list_head *p; |
| 1061 | |
| 1062 | list_for_each(p, &hdev->link_keys) { |
| 1063 | struct link_key *k; |
| 1064 | |
| 1065 | k = list_entry(p, struct link_key, list); |
| 1066 | |
| 1067 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
| 1068 | return k; |
| 1069 | } |
| 1070 | |
| 1071 | return NULL; |
| 1072 | } |
| 1073 | |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1074 | struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
| 1075 | { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1076 | struct list_head *p; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1077 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1078 | list_for_each(p, &hdev->link_keys) { |
| 1079 | struct link_key *k; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1080 | struct key_master_id *id; |
| 1081 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1082 | k = list_entry(p, struct link_key, list); |
| 1083 | |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1084 | if (k->key_type != KEY_TYPE_LTK) |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1085 | continue; |
| 1086 | |
| 1087 | if (k->dlen != sizeof(*id)) |
| 1088 | continue; |
| 1089 | |
| 1090 | id = (void *) &k->data; |
| 1091 | if (id->ediv == ediv && |
| 1092 | (memcmp(rand, id->rand, sizeof(id->rand)) == 0)) |
| 1093 | return k; |
| 1094 | } |
| 1095 | |
| 1096 | return NULL; |
| 1097 | } |
| 1098 | EXPORT_SYMBOL(hci_find_ltk); |
| 1099 | |
| 1100 | struct link_key *hci_find_link_key_type(struct hci_dev *hdev, |
| 1101 | bdaddr_t *bdaddr, u8 type) |
| 1102 | { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1103 | struct list_head *p; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1104 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1105 | list_for_each(p, &hdev->link_keys) { |
| 1106 | struct link_key *k; |
| 1107 | |
| 1108 | k = list_entry(p, struct link_key, list); |
| 1109 | |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1110 | if ((k->key_type == type) && (bacmp(bdaddr, &k->bdaddr) == 0)) |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1111 | return k; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1112 | } |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1113 | |
| 1114 | return NULL; |
| 1115 | } |
| 1116 | EXPORT_SYMBOL(hci_find_link_key_type); |
| 1117 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1118 | int hci_add_link_key(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr, |
| 1119 | u8 *val, u8 type, u8 pin_len) |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1120 | { |
| 1121 | struct link_key *key, *old_key; |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1122 | struct hci_conn *conn; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1123 | u8 old_key_type; |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1124 | u8 bonded = 0; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1125 | |
| 1126 | old_key = hci_find_link_key(hdev, bdaddr); |
| 1127 | if (old_key) { |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1128 | old_key_type = old_key->key_type; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1129 | key = old_key; |
| 1130 | } else { |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1131 | old_key_type = 0xff; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1132 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
| 1133 | if (!key) |
| 1134 | return -ENOMEM; |
| 1135 | list_add(&key->list, &hdev->link_keys); |
| 1136 | } |
| 1137 | |
| 1138 | BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); |
| 1139 | |
| 1140 | bacpy(&key->bdaddr, bdaddr); |
| 1141 | memcpy(key->val, val, 16); |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1142 | key->auth = 0x01; |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1143 | key->key_type = type; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1144 | key->pin_len = pin_len; |
| 1145 | |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1146 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, bdaddr); |
Srinivas Krovvidi | 9ff5145 | 2011-09-27 19:25:02 +0530 | [diff] [blame] | 1147 | /* Store the link key persistently if one of the following is true: |
| 1148 | * 1. the remote side is using dedicated bonding since in that case |
| 1149 | * also the local requirements are set to dedicated bonding |
| 1150 | * 2. the local side had dedicated bonding as a requirement |
| 1151 | * 3. this is a legacy link key |
| 1152 | * 4. this is a changed combination key and there was a previously |
| 1153 | * stored one |
| 1154 | * If none of the above match only keep the link key around for |
| 1155 | * this connection and set the temporary flag for the device. |
| 1156 | */ |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1157 | |
Brian Gix | dfdd936 | 2011-08-18 09:58:02 -0700 | [diff] [blame] | 1158 | if (conn) { |
Srinivas Krovvidi | 9ff5145 | 2011-09-27 19:25:02 +0530 | [diff] [blame] | 1159 | if ((conn->remote_auth > 0x01) || |
| 1160 | (conn->auth_initiator && conn->auth_type > 0x01) || |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1161 | (key->key_type < 0x03) || |
| 1162 | (key->key_type == 0x06 && old_key_type != 0xff)) |
Brian Gix | dfdd936 | 2011-08-18 09:58:02 -0700 | [diff] [blame] | 1163 | bonded = 1; |
| 1164 | } |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1165 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1166 | if (new_key) |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1167 | mgmt_new_key(hdev->id, key, bonded); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1168 | |
| 1169 | if (type == 0x06) |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1170 | key->key_type = old_key_type; |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1171 | |
| 1172 | return 0; |
| 1173 | } |
| 1174 | |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1175 | int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr, |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1176 | u8 addr_type, u8 key_size, u8 auth, |
| 1177 | __le16 ediv, u8 rand[8], u8 ltk[16]) |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1178 | { |
| 1179 | struct link_key *key, *old_key; |
| 1180 | struct key_master_id *id; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1181 | |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1182 | BT_DBG("%s Auth: %2.2X addr %s type: %d", hdev->name, auth, |
| 1183 | batostr(bdaddr), addr_type); |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1184 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1185 | old_key = hci_find_link_key_type(hdev, bdaddr, KEY_TYPE_LTK); |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1186 | if (old_key) { |
| 1187 | key = old_key; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1188 | } else { |
| 1189 | key = kzalloc(sizeof(*key) + sizeof(*id), GFP_ATOMIC); |
| 1190 | if (!key) |
| 1191 | return -ENOMEM; |
| 1192 | list_add(&key->list, &hdev->link_keys); |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | key->dlen = sizeof(*id); |
| 1196 | |
| 1197 | bacpy(&key->bdaddr, bdaddr); |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1198 | key->addr_type = addr_type; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1199 | memcpy(key->val, ltk, sizeof(key->val)); |
Brian Gix | cf95677 | 2011-10-20 15:18:51 -0700 | [diff] [blame] | 1200 | key->key_type = KEY_TYPE_LTK; |
Vinicius Costa Gomes | 1fa2de3 | 2011-07-08 18:31:45 -0300 | [diff] [blame] | 1201 | key->pin_len = key_size; |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1202 | key->auth = auth; |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1203 | |
| 1204 | id = (void *) &key->data; |
| 1205 | id->ediv = ediv; |
| 1206 | memcpy(id->rand, rand, sizeof(id->rand)); |
| 1207 | |
| 1208 | if (new_key) |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1209 | mgmt_new_key(hdev->id, key, auth & 0x01); |
Vinicius Costa Gomes | 7f9004d | 2011-07-07 18:59:36 -0300 | [diff] [blame] | 1210 | |
| 1211 | return 0; |
| 1212 | } |
| 1213 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1214 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1215 | { |
| 1216 | struct link_key *key; |
| 1217 | |
| 1218 | key = hci_find_link_key(hdev, bdaddr); |
| 1219 | if (!key) |
| 1220 | return -ENOENT; |
| 1221 | |
| 1222 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1223 | |
| 1224 | list_del(&key->list); |
| 1225 | kfree(key); |
| 1226 | |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1230 | /* HCI command timer function */ |
| 1231 | static void hci_cmd_timer(unsigned long arg) |
| 1232 | { |
| 1233 | struct hci_dev *hdev = (void *) arg; |
| 1234 | |
| 1235 | BT_ERR("%s command tx timeout", hdev->name); |
| 1236 | atomic_set(&hdev->cmd_cnt, 1); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1237 | clear_bit(HCI_RESET, &hdev->flags); |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1238 | tasklet_schedule(&hdev->cmd_task); |
| 1239 | } |
| 1240 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1241 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
| 1242 | bdaddr_t *bdaddr) |
| 1243 | { |
| 1244 | struct oob_data *data; |
| 1245 | |
| 1246 | list_for_each_entry(data, &hdev->remote_oob_data, list) |
| 1247 | if (bacmp(bdaddr, &data->bdaddr) == 0) |
| 1248 | return data; |
| 1249 | |
| 1250 | return NULL; |
| 1251 | } |
| 1252 | |
| 1253 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1254 | { |
| 1255 | struct oob_data *data; |
| 1256 | |
| 1257 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1258 | if (!data) |
| 1259 | return -ENOENT; |
| 1260 | |
| 1261 | BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); |
| 1262 | |
| 1263 | list_del(&data->list); |
| 1264 | kfree(data); |
| 1265 | |
| 1266 | return 0; |
| 1267 | } |
| 1268 | |
| 1269 | int hci_remote_oob_data_clear(struct hci_dev *hdev) |
| 1270 | { |
| 1271 | struct oob_data *data, *n; |
| 1272 | |
| 1273 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { |
| 1274 | list_del(&data->list); |
| 1275 | kfree(data); |
| 1276 | } |
| 1277 | |
| 1278 | return 0; |
| 1279 | } |
| 1280 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1281 | static void hci_adv_clear(unsigned long arg) |
| 1282 | { |
| 1283 | struct hci_dev *hdev = (void *) arg; |
| 1284 | |
| 1285 | hci_adv_entries_clear(hdev); |
| 1286 | } |
| 1287 | |
| 1288 | int hci_adv_entries_clear(struct hci_dev *hdev) |
| 1289 | { |
| 1290 | struct list_head *p, *n; |
| 1291 | |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1292 | BT_DBG(""); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1293 | write_lock_bh(&hdev->adv_entries_lock); |
| 1294 | |
| 1295 | list_for_each_safe(p, n, &hdev->adv_entries) { |
| 1296 | struct adv_entry *entry; |
| 1297 | |
| 1298 | entry = list_entry(p, struct adv_entry, list); |
| 1299 | |
| 1300 | list_del(p); |
| 1301 | kfree(entry); |
| 1302 | } |
| 1303 | |
| 1304 | write_unlock_bh(&hdev->adv_entries_lock); |
| 1305 | |
| 1306 | return 0; |
| 1307 | } |
| 1308 | |
| 1309 | struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr) |
| 1310 | { |
| 1311 | struct list_head *p; |
| 1312 | struct adv_entry *res = NULL; |
| 1313 | |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1314 | BT_DBG(""); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1315 | read_lock_bh(&hdev->adv_entries_lock); |
| 1316 | |
| 1317 | list_for_each(p, &hdev->adv_entries) { |
| 1318 | struct adv_entry *entry; |
| 1319 | |
| 1320 | entry = list_entry(p, struct adv_entry, list); |
| 1321 | |
| 1322 | if (bacmp(bdaddr, &entry->bdaddr) == 0) { |
| 1323 | res = entry; |
| 1324 | goto out; |
| 1325 | } |
| 1326 | } |
| 1327 | out: |
| 1328 | read_unlock_bh(&hdev->adv_entries_lock); |
| 1329 | return res; |
| 1330 | } |
| 1331 | |
| 1332 | static inline int is_connectable_adv(u8 evt_type) |
| 1333 | { |
| 1334 | if (evt_type == ADV_IND || evt_type == ADV_DIRECT_IND) |
| 1335 | return 1; |
| 1336 | |
| 1337 | return 0; |
| 1338 | } |
| 1339 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1340 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, |
| 1341 | u8 *randomizer) |
| 1342 | { |
| 1343 | struct oob_data *data; |
| 1344 | |
| 1345 | data = hci_find_remote_oob_data(hdev, bdaddr); |
| 1346 | |
| 1347 | if (!data) { |
| 1348 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
| 1349 | if (!data) |
| 1350 | return -ENOMEM; |
| 1351 | |
| 1352 | bacpy(&data->bdaddr, bdaddr); |
| 1353 | list_add(&data->list, &hdev->remote_oob_data); |
| 1354 | } |
| 1355 | |
| 1356 | memcpy(data->hash, hash, sizeof(data->hash)); |
| 1357 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); |
| 1358 | |
| 1359 | BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); |
| 1360 | |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1364 | int hci_add_adv_entry(struct hci_dev *hdev, |
| 1365 | struct hci_ev_le_advertising_info *ev) |
| 1366 | { |
| 1367 | struct adv_entry *entry; |
Brian Gix | fdd3892 | 2011-09-28 16:23:48 -0700 | [diff] [blame] | 1368 | u8 flags = 0; |
| 1369 | int i; |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1370 | |
Brian Gix | a68668b | 2011-08-11 15:49:36 -0700 | [diff] [blame] | 1371 | BT_DBG(""); |
| 1372 | |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1373 | if (!is_connectable_adv(ev->evt_type)) |
| 1374 | return -EINVAL; |
| 1375 | |
Brian Gix | fdd3892 | 2011-09-28 16:23:48 -0700 | [diff] [blame] | 1376 | if (ev->data && ev->length) { |
| 1377 | for (i = 0; (i + 2) < ev->length; i++) |
| 1378 | if (ev->data[i+1] == 0x01) { |
| 1379 | flags = ev->data[i+2]; |
| 1380 | BT_DBG("flags: %2.2x", flags); |
| 1381 | break; |
| 1382 | } else { |
| 1383 | i += ev->data[i]; |
| 1384 | } |
| 1385 | } |
| 1386 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1387 | entry = hci_find_adv_entry(hdev, &ev->bdaddr); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1388 | /* Only new entries should be added to adv_entries. So, if |
| 1389 | * bdaddr was found, don't add it. */ |
Brian Gix | fdd3892 | 2011-09-28 16:23:48 -0700 | [diff] [blame] | 1390 | if (entry) { |
| 1391 | entry->flags = flags; |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1392 | return 0; |
Brian Gix | fdd3892 | 2011-09-28 16:23:48 -0700 | [diff] [blame] | 1393 | } |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1394 | |
| 1395 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
| 1396 | if (!entry) |
| 1397 | return -ENOMEM; |
| 1398 | |
| 1399 | bacpy(&entry->bdaddr, &ev->bdaddr); |
| 1400 | entry->bdaddr_type = ev->bdaddr_type; |
Brian Gix | fdd3892 | 2011-09-28 16:23:48 -0700 | [diff] [blame] | 1401 | entry->flags = flags; |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1402 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1403 | write_lock(&hdev->adv_entries_lock); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1404 | list_add(&entry->list, &hdev->adv_entries); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1405 | write_unlock(&hdev->adv_entries_lock); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1406 | |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1410 | static struct crypto_blkcipher *alloc_cypher(void) |
| 1411 | { |
| 1412 | if (enable_smp) |
| 1413 | return crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC); |
| 1414 | |
| 1415 | return ERR_PTR(-ENOTSUPP); |
| 1416 | } |
| 1417 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | /* Register HCI device */ |
| 1419 | int hci_register_dev(struct hci_dev *hdev) |
| 1420 | { |
| 1421 | struct list_head *head = &hci_dev_list, *p; |
Peter Krystad | 462bf76 | 2011-09-19 14:20:20 -0700 | [diff] [blame] | 1422 | int i, id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | |
Marcel Holtmann | c13854ce | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1424 | BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, |
| 1425 | hdev->bus, hdev->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | |
| 1427 | if (!hdev->open || !hdev->close || !hdev->destruct) |
| 1428 | return -EINVAL; |
| 1429 | |
Peter Krystad | 462bf76 | 2011-09-19 14:20:20 -0700 | [diff] [blame] | 1430 | id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; |
| 1431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | write_lock_bh(&hci_dev_list_lock); |
| 1433 | |
| 1434 | /* Find first available device id */ |
| 1435 | list_for_each(p, &hci_dev_list) { |
| 1436 | if (list_entry(p, struct hci_dev, list)->id != id) |
| 1437 | break; |
| 1438 | head = p; id++; |
| 1439 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | sprintf(hdev->name, "hci%d", id); |
| 1442 | hdev->id = id; |
| 1443 | list_add(&hdev->list, head); |
| 1444 | |
| 1445 | atomic_set(&hdev->refcnt, 1); |
| 1446 | spin_lock_init(&hdev->lock); |
| 1447 | |
| 1448 | hdev->flags = 0; |
| 1449 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 1450 | hdev->esco_type = (ESCO_HV1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | hdev->link_mode = (HCI_LM_ACCEPT); |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 1452 | hdev->io_capability = 0x03; /* No Input No Output */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1454 | hdev->idle_timeout = 0; |
| 1455 | hdev->sniff_max_interval = 800; |
| 1456 | hdev->sniff_min_interval = 80; |
| 1457 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1458 | tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); |
| 1460 | tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); |
| 1461 | |
| 1462 | skb_queue_head_init(&hdev->rx_q); |
| 1463 | skb_queue_head_init(&hdev->cmd_q); |
| 1464 | skb_queue_head_init(&hdev->raw_q); |
| 1465 | |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 1466 | setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); |
| 1467 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1468 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1469 | hdev->reassembly[i] = NULL; |
| 1470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | init_waitqueue_head(&hdev->req_wait_q); |
Thomas Gleixner | a6a67ef | 2009-07-26 08:18:19 +0000 | [diff] [blame] | 1472 | mutex_init(&hdev->req_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | |
| 1474 | inquiry_cache_init(hdev); |
| 1475 | |
| 1476 | hci_conn_hash_init(hdev); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1477 | hci_chan_list_init(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | |
David Miller | ea4bd8b | 2010-07-30 21:54:49 -0700 | [diff] [blame] | 1479 | INIT_LIST_HEAD(&hdev->blacklist); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 1480 | |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1481 | INIT_LIST_HEAD(&hdev->uuids); |
| 1482 | |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1483 | INIT_LIST_HEAD(&hdev->link_keys); |
| 1484 | |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1485 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
| 1486 | |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1487 | INIT_LIST_HEAD(&hdev->adv_entries); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1488 | rwlock_init(&hdev->adv_entries_lock); |
| 1489 | setup_timer(&hdev->adv_timer, hci_adv_clear, (unsigned long) hdev); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1490 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1491 | INIT_WORK(&hdev->power_on, hci_power_on); |
| 1492 | INIT_WORK(&hdev->power_off, hci_power_off); |
| 1493 | setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev); |
| 1494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
| 1496 | |
| 1497 | atomic_set(&hdev->promisc, 0); |
| 1498 | |
| 1499 | write_unlock_bh(&hci_dev_list_lock); |
| 1500 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1501 | hdev->workqueue = create_singlethread_workqueue(hdev->name); |
| 1502 | if (!hdev->workqueue) |
| 1503 | goto nomem; |
| 1504 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1505 | hdev->tfm = alloc_cypher(); |
Vinicius Costa Gomes | 09fabbc | 2011-06-09 18:50:43 -0300 | [diff] [blame] | 1506 | if (IS_ERR(hdev->tfm)) |
| 1507 | BT_INFO("Failed to load transform for ecb(aes): %ld", |
| 1508 | PTR_ERR(hdev->tfm)); |
| 1509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | hci_register_sysfs(hdev); |
| 1511 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1512 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
| 1513 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); |
| 1514 | if (hdev->rfkill) { |
| 1515 | if (rfkill_register(hdev->rfkill) < 0) { |
| 1516 | rfkill_destroy(hdev->rfkill); |
| 1517 | hdev->rfkill = NULL; |
| 1518 | } |
| 1519 | } |
| 1520 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1521 | set_bit(HCI_AUTO_OFF, &hdev->flags); |
| 1522 | set_bit(HCI_SETUP, &hdev->flags); |
| 1523 | queue_work(hdev->workqueue, &hdev->power_on); |
| 1524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | hci_notify(hdev, HCI_DEV_REG); |
| 1526 | |
| 1527 | return id; |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1528 | |
| 1529 | nomem: |
| 1530 | write_lock_bh(&hci_dev_list_lock); |
| 1531 | list_del(&hdev->list); |
| 1532 | write_unlock_bh(&hci_dev_list_lock); |
| 1533 | |
| 1534 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | } |
| 1536 | EXPORT_SYMBOL(hci_register_dev); |
| 1537 | |
| 1538 | /* Unregister HCI device */ |
| 1539 | int hci_unregister_dev(struct hci_dev *hdev) |
| 1540 | { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1541 | int i; |
| 1542 | |
Marcel Holtmann | c13854ce | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 1543 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | write_lock_bh(&hci_dev_list_lock); |
| 1546 | list_del(&hdev->list); |
| 1547 | write_unlock_bh(&hci_dev_list_lock); |
| 1548 | |
| 1549 | hci_dev_do_close(hdev); |
| 1550 | |
Suraj Sumangala | cd4c539 | 2010-07-14 13:02:16 +0530 | [diff] [blame] | 1551 | for (i = 0; i < NUM_REASSEMBLY; i++) |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1552 | kfree_skb(hdev->reassembly[i]); |
| 1553 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1554 | if (!test_bit(HCI_INIT, &hdev->flags) && |
Peter Krystad | 1fc4407 | 2011-08-30 15:38:12 -0700 | [diff] [blame] | 1555 | !test_bit(HCI_SETUP, &hdev->flags) && |
Subramanian Srinivasan | a727a49 | 2011-11-30 13:06:07 -0800 | [diff] [blame] | 1556 | hdev->dev_type == HCI_BREDR) { |
| 1557 | hci_dev_lock_bh(hdev); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1558 | mgmt_index_removed(hdev->id); |
Subramanian Srinivasan | a727a49 | 2011-11-30 13:06:07 -0800 | [diff] [blame] | 1559 | hci_dev_unlock_bh(hdev); |
| 1560 | } |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 1561 | |
Vinicius Costa Gomes | 09fabbc | 2011-06-09 18:50:43 -0300 | [diff] [blame] | 1562 | if (!IS_ERR(hdev->tfm)) |
| 1563 | crypto_free_blkcipher(hdev->tfm); |
| 1564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | hci_notify(hdev, HCI_DEV_UNREG); |
| 1566 | |
Marcel Holtmann | 611b30f | 2009-06-08 14:41:38 +0200 | [diff] [blame] | 1567 | if (hdev->rfkill) { |
| 1568 | rfkill_unregister(hdev->rfkill); |
| 1569 | rfkill_destroy(hdev->rfkill); |
| 1570 | } |
| 1571 | |
Dave Young | 147e2d5 | 2008-03-05 18:45:59 -0800 | [diff] [blame] | 1572 | hci_unregister_sysfs(hdev); |
| 1573 | |
Brian Gix | 3cd6204 | 2012-01-11 15:18:17 -0800 | [diff] [blame^] | 1574 | /* Disable all timers */ |
Gustavo F. Padovan | c6f3c5f | 2011-02-15 20:22:03 -0300 | [diff] [blame] | 1575 | hci_del_off_timer(hdev); |
Andre Guedes | 45e600f | 2011-05-26 16:23:53 -0300 | [diff] [blame] | 1576 | del_timer(&hdev->adv_timer); |
Brian Gix | 3cd6204 | 2012-01-11 15:18:17 -0800 | [diff] [blame^] | 1577 | del_timer(&hdev->cmd_timer); |
| 1578 | del_timer(&hdev->disc_timer); |
| 1579 | del_timer(&hdev->disc_le_timer); |
Gustavo F. Padovan | c6f3c5f | 2011-02-15 20:22:03 -0300 | [diff] [blame] | 1580 | |
Marcel Holtmann | f48fd9c | 2010-03-20 15:20:04 +0100 | [diff] [blame] | 1581 | destroy_workqueue(hdev->workqueue); |
| 1582 | |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1583 | hci_dev_lock_bh(hdev); |
| 1584 | hci_blacklist_clear(hdev); |
Johan Hedberg | 2aeb9a1 | 2011-01-04 12:08:51 +0200 | [diff] [blame] | 1585 | hci_uuids_clear(hdev); |
Johan Hedberg | 55ed8ca | 2011-01-17 14:41:05 +0200 | [diff] [blame] | 1586 | hci_link_keys_clear(hdev); |
Szymon Janc | 2763eda | 2011-03-22 13:12:22 +0100 | [diff] [blame] | 1587 | hci_remote_oob_data_clear(hdev); |
Andre Guedes | 6c77c8c | 2011-05-26 16:23:50 -0300 | [diff] [blame] | 1588 | hci_adv_entries_clear(hdev); |
Johan Hedberg | e2e0cac | 2011-01-04 12:08:50 +0200 | [diff] [blame] | 1589 | hci_dev_unlock_bh(hdev); |
| 1590 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | __hci_dev_put(hdev); |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | return 0; |
| 1594 | } |
| 1595 | EXPORT_SYMBOL(hci_unregister_dev); |
| 1596 | |
| 1597 | /* Suspend HCI device */ |
| 1598 | int hci_suspend_dev(struct hci_dev *hdev) |
| 1599 | { |
| 1600 | hci_notify(hdev, HCI_DEV_SUSPEND); |
| 1601 | return 0; |
| 1602 | } |
| 1603 | EXPORT_SYMBOL(hci_suspend_dev); |
| 1604 | |
| 1605 | /* Resume HCI device */ |
| 1606 | int hci_resume_dev(struct hci_dev *hdev) |
| 1607 | { |
| 1608 | hci_notify(hdev, HCI_DEV_RESUME); |
| 1609 | return 0; |
| 1610 | } |
| 1611 | EXPORT_SYMBOL(hci_resume_dev); |
| 1612 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1613 | /* Receive frame from HCI drivers */ |
| 1614 | int hci_recv_frame(struct sk_buff *skb) |
| 1615 | { |
| 1616 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1617 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
| 1618 | && !test_bit(HCI_INIT, &hdev->flags))) { |
| 1619 | kfree_skb(skb); |
| 1620 | return -ENXIO; |
| 1621 | } |
| 1622 | |
| 1623 | /* Incomming skb */ |
| 1624 | bt_cb(skb)->incoming = 1; |
| 1625 | |
| 1626 | /* Time stamp */ |
| 1627 | __net_timestamp(skb); |
| 1628 | |
| 1629 | /* Queue frame for rx task */ |
| 1630 | skb_queue_tail(&hdev->rx_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1631 | tasklet_schedule(&hdev->rx_task); |
| 1632 | |
Marcel Holtmann | 76bca88 | 2009-11-18 00:40:39 +0100 | [diff] [blame] | 1633 | return 0; |
| 1634 | } |
| 1635 | EXPORT_SYMBOL(hci_recv_frame); |
| 1636 | |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1637 | 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] | 1638 | int count, __u8 index) |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1639 | { |
| 1640 | int len = 0; |
| 1641 | int hlen = 0; |
| 1642 | int remain = count; |
| 1643 | struct sk_buff *skb; |
| 1644 | struct bt_skb_cb *scb; |
| 1645 | |
| 1646 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || |
| 1647 | index >= NUM_REASSEMBLY) |
| 1648 | return -EILSEQ; |
| 1649 | |
| 1650 | skb = hdev->reassembly[index]; |
| 1651 | |
| 1652 | if (!skb) { |
| 1653 | switch (type) { |
| 1654 | case HCI_ACLDATA_PKT: |
| 1655 | len = HCI_MAX_FRAME_SIZE; |
| 1656 | hlen = HCI_ACL_HDR_SIZE; |
| 1657 | break; |
| 1658 | case HCI_EVENT_PKT: |
| 1659 | len = HCI_MAX_EVENT_SIZE; |
| 1660 | hlen = HCI_EVENT_HDR_SIZE; |
| 1661 | break; |
| 1662 | case HCI_SCODATA_PKT: |
| 1663 | len = HCI_MAX_SCO_SIZE; |
| 1664 | hlen = HCI_SCO_HDR_SIZE; |
| 1665 | break; |
| 1666 | } |
| 1667 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1668 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
Suraj Sumangala | 33e882a | 2010-07-14 13:02:17 +0530 | [diff] [blame] | 1669 | if (!skb) |
| 1670 | return -ENOMEM; |
| 1671 | |
| 1672 | scb = (void *) skb->cb; |
| 1673 | scb->expect = hlen; |
| 1674 | scb->pkt_type = type; |
| 1675 | |
| 1676 | skb->dev = (void *) hdev; |
| 1677 | hdev->reassembly[index] = skb; |
| 1678 | } |
| 1679 | |
| 1680 | while (count) { |
| 1681 | scb = (void *) skb->cb; |
| 1682 | len = min(scb->expect, (__u16)count); |
| 1683 | |
| 1684 | memcpy(skb_put(skb, len), data, len); |
| 1685 | |
| 1686 | count -= len; |
| 1687 | data += len; |
| 1688 | scb->expect -= len; |
| 1689 | remain = count; |
| 1690 | |
| 1691 | switch (type) { |
| 1692 | case HCI_EVENT_PKT: |
| 1693 | if (skb->len == HCI_EVENT_HDR_SIZE) { |
| 1694 | struct hci_event_hdr *h = hci_event_hdr(skb); |
| 1695 | scb->expect = h->plen; |
| 1696 | |
| 1697 | if (skb_tailroom(skb) < scb->expect) { |
| 1698 | kfree_skb(skb); |
| 1699 | hdev->reassembly[index] = NULL; |
| 1700 | return -ENOMEM; |
| 1701 | } |
| 1702 | } |
| 1703 | break; |
| 1704 | |
| 1705 | case HCI_ACLDATA_PKT: |
| 1706 | if (skb->len == HCI_ACL_HDR_SIZE) { |
| 1707 | struct hci_acl_hdr *h = hci_acl_hdr(skb); |
| 1708 | scb->expect = __le16_to_cpu(h->dlen); |
| 1709 | |
| 1710 | if (skb_tailroom(skb) < scb->expect) { |
| 1711 | kfree_skb(skb); |
| 1712 | hdev->reassembly[index] = NULL; |
| 1713 | return -ENOMEM; |
| 1714 | } |
| 1715 | } |
| 1716 | break; |
| 1717 | |
| 1718 | case HCI_SCODATA_PKT: |
| 1719 | if (skb->len == HCI_SCO_HDR_SIZE) { |
| 1720 | struct hci_sco_hdr *h = hci_sco_hdr(skb); |
| 1721 | scb->expect = h->dlen; |
| 1722 | |
| 1723 | if (skb_tailroom(skb) < scb->expect) { |
| 1724 | kfree_skb(skb); |
| 1725 | hdev->reassembly[index] = NULL; |
| 1726 | return -ENOMEM; |
| 1727 | } |
| 1728 | } |
| 1729 | break; |
| 1730 | } |
| 1731 | |
| 1732 | if (scb->expect == 0) { |
| 1733 | /* Complete frame */ |
| 1734 | |
| 1735 | bt_cb(skb)->pkt_type = type; |
| 1736 | hci_recv_frame(skb); |
| 1737 | |
| 1738 | hdev->reassembly[index] = NULL; |
| 1739 | return remain; |
| 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | return remain; |
| 1744 | } |
| 1745 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1746 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
| 1747 | { |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1748 | int rem = 0; |
| 1749 | |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1750 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
| 1751 | return -EILSEQ; |
| 1752 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1753 | while (count) { |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1754 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1755 | if (rem < 0) |
| 1756 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1757 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1758 | data += (count - rem); |
| 1759 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1760 | }; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1761 | |
Suraj Sumangala | f39a3c0 | 2010-07-14 13:02:18 +0530 | [diff] [blame] | 1762 | return rem; |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1763 | } |
| 1764 | EXPORT_SYMBOL(hci_recv_fragment); |
| 1765 | |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1766 | #define STREAM_REASSEMBLY 0 |
| 1767 | |
| 1768 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) |
| 1769 | { |
| 1770 | int type; |
| 1771 | int rem = 0; |
| 1772 | |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1773 | while (count) { |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1774 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
| 1775 | |
| 1776 | if (!skb) { |
| 1777 | struct { char type; } *pkt; |
| 1778 | |
| 1779 | /* Start of the frame */ |
| 1780 | pkt = data; |
| 1781 | type = pkt->type; |
| 1782 | |
| 1783 | data++; |
| 1784 | count--; |
| 1785 | } else |
| 1786 | type = bt_cb(skb)->pkt_type; |
| 1787 | |
Gustavo F. Padovan | 1e429f3 | 2011-04-04 18:25:14 -0300 | [diff] [blame] | 1788 | rem = hci_reassembly(hdev, type, data, count, |
| 1789 | STREAM_REASSEMBLY); |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1790 | if (rem < 0) |
| 1791 | return rem; |
| 1792 | |
| 1793 | data += (count - rem); |
| 1794 | count = rem; |
Gustavo F. Padovan | da5f6c3 | 2010-07-24 01:34:54 -0300 | [diff] [blame] | 1795 | }; |
Suraj Sumangala | 9981151 | 2010-07-14 13:02:19 +0530 | [diff] [blame] | 1796 | |
| 1797 | return rem; |
| 1798 | } |
| 1799 | EXPORT_SYMBOL(hci_recv_stream_fragment); |
| 1800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | /* ---- Interface to upper protocols ---- */ |
| 1802 | |
| 1803 | /* Register/Unregister protocols. |
| 1804 | * hci_task_lock is used to ensure that no tasks are running. */ |
| 1805 | int hci_register_proto(struct hci_proto *hp) |
| 1806 | { |
| 1807 | int err = 0; |
| 1808 | |
| 1809 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1810 | |
| 1811 | if (hp->id >= HCI_MAX_PROTO) |
| 1812 | return -EINVAL; |
| 1813 | |
| 1814 | write_lock_bh(&hci_task_lock); |
| 1815 | |
| 1816 | if (!hci_proto[hp->id]) |
| 1817 | hci_proto[hp->id] = hp; |
| 1818 | else |
| 1819 | err = -EEXIST; |
| 1820 | |
| 1821 | write_unlock_bh(&hci_task_lock); |
| 1822 | |
| 1823 | return err; |
| 1824 | } |
| 1825 | EXPORT_SYMBOL(hci_register_proto); |
| 1826 | |
| 1827 | int hci_unregister_proto(struct hci_proto *hp) |
| 1828 | { |
| 1829 | int err = 0; |
| 1830 | |
| 1831 | BT_DBG("%p name %s id %d", hp, hp->name, hp->id); |
| 1832 | |
| 1833 | if (hp->id >= HCI_MAX_PROTO) |
| 1834 | return -EINVAL; |
| 1835 | |
| 1836 | write_lock_bh(&hci_task_lock); |
| 1837 | |
| 1838 | if (hci_proto[hp->id]) |
| 1839 | hci_proto[hp->id] = NULL; |
| 1840 | else |
| 1841 | err = -ENOENT; |
| 1842 | |
| 1843 | write_unlock_bh(&hci_task_lock); |
| 1844 | |
| 1845 | return err; |
| 1846 | } |
| 1847 | EXPORT_SYMBOL(hci_unregister_proto); |
| 1848 | |
| 1849 | int hci_register_cb(struct hci_cb *cb) |
| 1850 | { |
| 1851 | BT_DBG("%p name %s", cb, cb->name); |
| 1852 | |
| 1853 | write_lock_bh(&hci_cb_list_lock); |
| 1854 | list_add(&cb->list, &hci_cb_list); |
| 1855 | write_unlock_bh(&hci_cb_list_lock); |
| 1856 | |
| 1857 | return 0; |
| 1858 | } |
| 1859 | EXPORT_SYMBOL(hci_register_cb); |
| 1860 | |
| 1861 | int hci_unregister_cb(struct hci_cb *cb) |
| 1862 | { |
| 1863 | BT_DBG("%p name %s", cb, cb->name); |
| 1864 | |
| 1865 | write_lock_bh(&hci_cb_list_lock); |
| 1866 | list_del(&cb->list); |
| 1867 | write_unlock_bh(&hci_cb_list_lock); |
| 1868 | |
| 1869 | return 0; |
| 1870 | } |
| 1871 | EXPORT_SYMBOL(hci_unregister_cb); |
| 1872 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1873 | int hci_register_amp(struct amp_mgr_cb *cb) |
| 1874 | { |
| 1875 | BT_DBG("%p", cb); |
| 1876 | |
| 1877 | write_lock_bh(&_mgr_cb_list_lock); |
| 1878 | list_add(&cb->list, &_mgr_cb_list); |
| 1879 | write_unlock_bh(&_mgr_cb_list_lock); |
| 1880 | |
| 1881 | return 0; |
| 1882 | } |
| 1883 | EXPORT_SYMBOL(hci_register_amp); |
| 1884 | |
| 1885 | int hci_unregister_amp(struct amp_mgr_cb *cb) |
| 1886 | { |
| 1887 | BT_DBG("%p", cb); |
| 1888 | |
| 1889 | write_lock_bh(&_mgr_cb_list_lock); |
| 1890 | list_del(&cb->list); |
| 1891 | write_unlock_bh(&_mgr_cb_list_lock); |
| 1892 | |
| 1893 | return 0; |
| 1894 | } |
| 1895 | EXPORT_SYMBOL(hci_unregister_amp); |
| 1896 | |
| 1897 | void hci_amp_cmd_complete(struct hci_dev *hdev, __u16 opcode, |
| 1898 | struct sk_buff *skb) |
| 1899 | { |
| 1900 | struct amp_mgr_cb *cb; |
| 1901 | |
| 1902 | BT_DBG("opcode 0x%x", opcode); |
| 1903 | |
| 1904 | read_lock_bh(&_mgr_cb_list_lock); |
| 1905 | list_for_each_entry(cb, &_mgr_cb_list, list) { |
| 1906 | if (cb->amp_cmd_complete_event) |
| 1907 | cb->amp_cmd_complete_event(hdev, opcode, skb); |
| 1908 | } |
| 1909 | read_unlock_bh(&_mgr_cb_list_lock); |
| 1910 | } |
| 1911 | |
| 1912 | void hci_amp_cmd_status(struct hci_dev *hdev, __u16 opcode, __u8 status) |
| 1913 | { |
| 1914 | struct amp_mgr_cb *cb; |
| 1915 | |
| 1916 | BT_DBG("opcode 0x%x, status %d", opcode, status); |
| 1917 | |
| 1918 | read_lock_bh(&_mgr_cb_list_lock); |
| 1919 | list_for_each_entry(cb, &_mgr_cb_list, list) { |
| 1920 | if (cb->amp_cmd_status_event) |
| 1921 | cb->amp_cmd_status_event(hdev, opcode, status); |
| 1922 | } |
| 1923 | read_unlock_bh(&_mgr_cb_list_lock); |
| 1924 | } |
| 1925 | |
| 1926 | void hci_amp_event_packet(struct hci_dev *hdev, __u8 ev_code, |
| 1927 | struct sk_buff *skb) |
| 1928 | { |
| 1929 | struct amp_mgr_cb *cb; |
| 1930 | |
| 1931 | BT_DBG("ev_code 0x%x", ev_code); |
| 1932 | |
| 1933 | read_lock_bh(&_mgr_cb_list_lock); |
| 1934 | list_for_each_entry(cb, &_mgr_cb_list, list) { |
| 1935 | if (cb->amp_event) |
| 1936 | cb->amp_event(hdev, ev_code, skb); |
| 1937 | } |
| 1938 | read_unlock_bh(&_mgr_cb_list_lock); |
| 1939 | } |
| 1940 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | static int hci_send_frame(struct sk_buff *skb) |
| 1942 | { |
| 1943 | struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| 1944 | |
| 1945 | if (!hdev) { |
| 1946 | kfree_skb(skb); |
| 1947 | return -ENODEV; |
| 1948 | } |
| 1949 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1950 | 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] | 1951 | |
| 1952 | if (atomic_read(&hdev->promisc)) { |
| 1953 | /* Time stamp */ |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 1954 | __net_timestamp(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 1956 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | } |
| 1958 | |
| 1959 | /* Get rid of skb owner, prior to sending to the driver. */ |
| 1960 | skb_orphan(skb); |
| 1961 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1962 | hci_notify(hdev, HCI_DEV_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | return hdev->send(skb); |
| 1964 | } |
| 1965 | |
| 1966 | /* Send HCI command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1967 | 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] | 1968 | { |
| 1969 | int len = HCI_COMMAND_HDR_SIZE + plen; |
| 1970 | struct hci_command_hdr *hdr; |
| 1971 | struct sk_buff *skb; |
| 1972 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1973 | BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | |
| 1975 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
| 1976 | if (!skb) { |
Marcel Holtmann | ef22201 | 2007-07-11 06:42:04 +0200 | [diff] [blame] | 1977 | BT_ERR("%s no memory for command", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | return -ENOMEM; |
| 1979 | } |
| 1980 | |
| 1981 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1982 | hdr->opcode = cpu_to_le16(opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | hdr->plen = plen; |
| 1984 | |
| 1985 | if (plen) |
| 1986 | memcpy(skb_put(skb, plen), param, plen); |
| 1987 | |
| 1988 | BT_DBG("skb len %d", skb->len); |
| 1989 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 1990 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | skb->dev = (void *) hdev; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1992 | |
Johan Hedberg | a5040ef | 2011-01-10 13:28:59 +0200 | [diff] [blame] | 1993 | if (test_bit(HCI_INIT, &hdev->flags)) |
| 1994 | hdev->init_last_cmd = opcode; |
| 1995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | skb_queue_tail(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 1997 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
| 1999 | return 0; |
| 2000 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2001 | EXPORT_SYMBOL(hci_send_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | |
| 2003 | /* Get data from the previously sent command */ |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2004 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | { |
| 2006 | struct hci_command_hdr *hdr; |
| 2007 | |
| 2008 | if (!hdev->sent_cmd) |
| 2009 | return NULL; |
| 2010 | |
| 2011 | hdr = (void *) hdev->sent_cmd->data; |
| 2012 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2013 | if (hdr->opcode != cpu_to_le16(opcode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | return NULL; |
| 2015 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 2016 | BT_DBG("%s opcode 0x%x", hdev->name, opcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | |
| 2018 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; |
| 2019 | } |
| 2020 | |
| 2021 | /* Send ACL data */ |
| 2022 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) |
| 2023 | { |
| 2024 | struct hci_acl_hdr *hdr; |
| 2025 | int len = skb->len; |
| 2026 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2027 | skb_push(skb, HCI_ACL_HDR_SIZE); |
| 2028 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2029 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2030 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
| 2031 | hdr->dlen = cpu_to_le16(len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | } |
| 2033 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2034 | void hci_send_acl(struct hci_conn *conn, struct hci_chan *chan, |
| 2035 | struct sk_buff *skb, __u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | { |
| 2037 | struct hci_dev *hdev = conn->hdev; |
| 2038 | struct sk_buff *list; |
| 2039 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2040 | BT_DBG("%s conn %p chan %p flags 0x%x", hdev->name, conn, chan, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | |
| 2042 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2043 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2044 | if (hdev->dev_type == HCI_BREDR) |
| 2045 | hci_add_acl_hdr(skb, conn->handle, flags); |
| 2046 | else |
| 2047 | hci_add_acl_hdr(skb, chan->ll_handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2049 | list = skb_shinfo(skb)->frag_list; |
| 2050 | if (!list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | /* Non fragmented */ |
| 2052 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); |
| 2053 | |
| 2054 | skb_queue_tail(&conn->data_q, skb); |
| 2055 | } else { |
| 2056 | /* Fragmented */ |
| 2057 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2058 | |
| 2059 | skb_shinfo(skb)->frag_list = NULL; |
| 2060 | |
| 2061 | /* Queue all fragments atomically */ |
| 2062 | spin_lock_bh(&conn->data_q.lock); |
| 2063 | |
| 2064 | __skb_queue_tail(&conn->data_q, skb); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2065 | flags &= ~ACL_PB_MASK; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2066 | flags |= ACL_CONT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | do { |
| 2068 | skb = list; list = list->next; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2071 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
Andrei Emeltchenko | e702112 | 2011-01-03 11:14:36 +0200 | [diff] [blame] | 2072 | hci_add_acl_hdr(skb, conn->handle, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | |
| 2074 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); |
| 2075 | |
| 2076 | __skb_queue_tail(&conn->data_q, skb); |
| 2077 | } while (list); |
| 2078 | |
| 2079 | spin_unlock_bh(&conn->data_q.lock); |
| 2080 | } |
| 2081 | |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2082 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | } |
| 2084 | EXPORT_SYMBOL(hci_send_acl); |
| 2085 | |
| 2086 | /* Send SCO data */ |
Gustavo F. Padovan | 0d861d8 | 2010-05-01 16:15:35 -0300 | [diff] [blame] | 2087 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | { |
| 2089 | struct hci_dev *hdev = conn->hdev; |
| 2090 | struct hci_sco_hdr hdr; |
| 2091 | |
| 2092 | BT_DBG("%s len %d", hdev->name, skb->len); |
| 2093 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 2094 | hdr.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | hdr.dlen = skb->len; |
| 2096 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 2097 | skb_push(skb, HCI_SCO_HDR_SIZE); |
| 2098 | skb_reset_transport_header(skb); |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 2099 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | |
| 2101 | skb->dev = (void *) hdev; |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2102 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | skb_queue_tail(&conn->data_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2105 | tasklet_schedule(&hdev->tx_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | } |
| 2107 | EXPORT_SYMBOL(hci_send_sco); |
| 2108 | |
| 2109 | /* ---- HCI TX task (outgoing data) ---- */ |
| 2110 | |
| 2111 | /* HCI Connection scheduler */ |
| 2112 | static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) |
| 2113 | { |
| 2114 | struct hci_conn_hash *h = &hdev->conn_hash; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 2115 | struct hci_conn *conn = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | int num = 0, min = ~0; |
| 2117 | struct list_head *p; |
| 2118 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2119 | /* We don't have to lock device here. Connections are always |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2120 | * added and removed with TX task disabled. */ |
| 2121 | list_for_each(p, &h->list) { |
| 2122 | struct hci_conn *c; |
| 2123 | c = list_entry(p, struct hci_conn, list); |
| 2124 | |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2125 | if (c->type != type || skb_queue_empty(&c->data_q)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | continue; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 2127 | |
| 2128 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) |
| 2129 | continue; |
| 2130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | num++; |
| 2132 | |
| 2133 | if (c->sent < min) { |
| 2134 | min = c->sent; |
| 2135 | conn = c; |
| 2136 | } |
| 2137 | } |
| 2138 | |
| 2139 | if (conn) { |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2140 | int cnt, q; |
| 2141 | |
| 2142 | switch (conn->type) { |
| 2143 | case ACL_LINK: |
| 2144 | cnt = hdev->acl_cnt; |
| 2145 | break; |
| 2146 | case SCO_LINK: |
| 2147 | case ESCO_LINK: |
| 2148 | cnt = hdev->sco_cnt; |
| 2149 | break; |
| 2150 | case LE_LINK: |
| 2151 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; |
| 2152 | break; |
| 2153 | default: |
| 2154 | cnt = 0; |
| 2155 | BT_ERR("Unknown link type"); |
| 2156 | } |
| 2157 | |
| 2158 | q = cnt / num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | *quote = q ? q : 1; |
| 2160 | } else |
| 2161 | *quote = 0; |
| 2162 | |
| 2163 | BT_DBG("conn %p quote %d", conn, *quote); |
| 2164 | return conn; |
| 2165 | } |
| 2166 | |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2167 | 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] | 2168 | { |
| 2169 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 2170 | struct list_head *p; |
| 2171 | struct hci_conn *c; |
| 2172 | |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2173 | BT_ERR("%s link tx timeout", hdev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | |
| 2175 | /* Kill stalled connections */ |
| 2176 | list_for_each(p, &h->list) { |
| 2177 | c = list_entry(p, struct hci_conn, list); |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2178 | if (c->type == type && c->sent) { |
| 2179 | BT_ERR("%s killing stalled connection %s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | hdev->name, batostr(&c->dst)); |
| 2181 | hci_acl_disconn(c, 0x13); |
| 2182 | } |
| 2183 | } |
| 2184 | } |
| 2185 | |
| 2186 | static inline void hci_sched_acl(struct hci_dev *hdev) |
| 2187 | { |
| 2188 | struct hci_conn *conn; |
| 2189 | struct sk_buff *skb; |
| 2190 | int quote; |
| 2191 | |
| 2192 | BT_DBG("%s", hdev->name); |
| 2193 | |
| 2194 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2195 | /* ACL tx timeout must be longer than maximum |
| 2196 | * link supervision timeout (40.9 seconds) */ |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2197 | if (hdev->acl_cnt <= 0 && |
| 2198 | time_after(jiffies, hdev->acl_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2199 | hci_link_tx_to(hdev, ACL_LINK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | } |
| 2201 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2202 | while (hdev->acl_cnt > 0 && |
| 2203 | (conn = hci_low_sent(hdev, ACL_LINK, "e))) { |
| 2204 | while (quote > 0 && (skb = skb_dequeue(&conn->data_q))) { |
| 2205 | int count = 1; |
| 2206 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | BT_DBG("skb %p len %d", skb, skb->len); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2208 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2209 | if (hdev->flow_ctl_mode == |
| 2210 | HCI_BLOCK_BASED_FLOW_CTL_MODE) |
| 2211 | /* Calculate count of blocks used by |
| 2212 | * this packet |
| 2213 | */ |
| 2214 | count = ((skb->len - HCI_ACL_HDR_SIZE - 1) / |
| 2215 | hdev->data_block_len) + 1; |
| 2216 | |
| 2217 | if (count > hdev->acl_cnt) |
| 2218 | return; |
| 2219 | |
Jaikumar Ganesh | 514abe6 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 2220 | hci_conn_enter_active_mode(conn, bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | hci_send_frame(skb); |
| 2223 | hdev->acl_last_tx = jiffies; |
| 2224 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2225 | hdev->acl_cnt -= count; |
| 2226 | quote -= count; |
| 2227 | |
| 2228 | conn->sent += count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | } |
| 2230 | } |
| 2231 | } |
| 2232 | |
| 2233 | /* Schedule SCO */ |
| 2234 | static inline void hci_sched_sco(struct hci_dev *hdev) |
| 2235 | { |
| 2236 | struct hci_conn *conn; |
| 2237 | struct sk_buff *skb; |
| 2238 | int quote; |
| 2239 | |
| 2240 | BT_DBG("%s", hdev->name); |
| 2241 | |
| 2242 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
| 2243 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2244 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2245 | hci_send_frame(skb); |
| 2246 | |
| 2247 | conn->sent++; |
| 2248 | if (conn->sent == ~0) |
| 2249 | conn->sent = 0; |
| 2250 | } |
| 2251 | } |
| 2252 | } |
| 2253 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2254 | static inline void hci_sched_esco(struct hci_dev *hdev) |
| 2255 | { |
| 2256 | struct hci_conn *conn; |
| 2257 | struct sk_buff *skb; |
| 2258 | int quote; |
| 2259 | |
| 2260 | BT_DBG("%s", hdev->name); |
| 2261 | |
| 2262 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { |
| 2263 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2264 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2265 | hci_send_frame(skb); |
| 2266 | |
| 2267 | conn->sent++; |
| 2268 | if (conn->sent == ~0) |
| 2269 | conn->sent = 0; |
| 2270 | } |
| 2271 | } |
| 2272 | } |
| 2273 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2274 | static inline void hci_sched_le(struct hci_dev *hdev) |
| 2275 | { |
| 2276 | struct hci_conn *conn; |
| 2277 | struct sk_buff *skb; |
| 2278 | int quote, cnt; |
| 2279 | |
| 2280 | BT_DBG("%s", hdev->name); |
| 2281 | |
| 2282 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
| 2283 | /* LE tx timeout must be longer than maximum |
| 2284 | * link supervision timeout (40.9 seconds) */ |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2285 | if (!hdev->le_cnt && hdev->le_pkts && |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2286 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
Ville Tervo | bae1f5d | 2011-02-10 22:38:53 -0300 | [diff] [blame] | 2287 | hci_link_tx_to(hdev, LE_LINK); |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2288 | } |
| 2289 | |
| 2290 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; |
| 2291 | while (cnt && (conn = hci_low_sent(hdev, LE_LINK, "e))) { |
| 2292 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
| 2293 | BT_DBG("skb %p len %d", skb, skb->len); |
| 2294 | |
| 2295 | hci_send_frame(skb); |
| 2296 | hdev->le_last_tx = jiffies; |
| 2297 | |
| 2298 | cnt--; |
| 2299 | conn->sent++; |
| 2300 | } |
| 2301 | } |
| 2302 | if (hdev->le_pkts) |
| 2303 | hdev->le_cnt = cnt; |
| 2304 | else |
| 2305 | hdev->acl_cnt = cnt; |
| 2306 | } |
| 2307 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | static void hci_tx_task(unsigned long arg) |
| 2309 | { |
| 2310 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2311 | struct sk_buff *skb; |
| 2312 | |
| 2313 | read_lock(&hci_task_lock); |
| 2314 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2315 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
| 2316 | hdev->sco_cnt, hdev->le_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | |
| 2318 | /* Schedule queues and send stuff to HCI driver */ |
| 2319 | |
| 2320 | hci_sched_acl(hdev); |
| 2321 | |
| 2322 | hci_sched_sco(hdev); |
| 2323 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 2324 | hci_sched_esco(hdev); |
| 2325 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 2326 | hci_sched_le(hdev); |
| 2327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | /* Send next queued raw (unknown type) packet */ |
| 2329 | while ((skb = skb_dequeue(&hdev->raw_q))) |
| 2330 | hci_send_frame(skb); |
| 2331 | |
| 2332 | read_unlock(&hci_task_lock); |
| 2333 | } |
| 2334 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2335 | /* ----- HCI RX task (incoming data proccessing) ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | |
| 2337 | /* ACL data packet */ |
| 2338 | static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 2339 | { |
| 2340 | struct hci_acl_hdr *hdr = (void *) skb->data; |
| 2341 | struct hci_conn *conn; |
| 2342 | __u16 handle, flags; |
| 2343 | |
| 2344 | skb_pull(skb, HCI_ACL_HDR_SIZE); |
| 2345 | |
| 2346 | handle = __le16_to_cpu(hdr->handle); |
| 2347 | flags = hci_flags(handle); |
| 2348 | handle = hci_handle(handle); |
| 2349 | |
| 2350 | BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); |
| 2351 | |
| 2352 | hdev->stat.acl_rx++; |
| 2353 | |
| 2354 | hci_dev_lock(hdev); |
| 2355 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2356 | hci_dev_unlock(hdev); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | if (conn) { |
| 2359 | register struct hci_proto *hp; |
| 2360 | |
Jaikumar Ganesh | 514abe6 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 2361 | hci_conn_enter_active_mode(conn, bt_cb(skb)->force_active); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 2362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2364 | hp = hci_proto[HCI_PROTO_L2CAP]; |
| 2365 | if (hp && hp->recv_acldata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | hp->recv_acldata(conn, skb, flags); |
| 2367 | return; |
| 2368 | } |
| 2369 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2370 | BT_ERR("%s ACL packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2371 | hdev->name, handle); |
| 2372 | } |
| 2373 | |
| 2374 | kfree_skb(skb); |
| 2375 | } |
| 2376 | |
| 2377 | /* SCO data packet */ |
| 2378 | static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
| 2379 | { |
| 2380 | struct hci_sco_hdr *hdr = (void *) skb->data; |
| 2381 | struct hci_conn *conn; |
| 2382 | __u16 handle; |
| 2383 | |
| 2384 | skb_pull(skb, HCI_SCO_HDR_SIZE); |
| 2385 | |
| 2386 | handle = __le16_to_cpu(hdr->handle); |
| 2387 | |
| 2388 | BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); |
| 2389 | |
| 2390 | hdev->stat.sco_rx++; |
| 2391 | |
| 2392 | hci_dev_lock(hdev); |
| 2393 | conn = hci_conn_hash_lookup_handle(hdev, handle); |
| 2394 | hci_dev_unlock(hdev); |
| 2395 | |
| 2396 | if (conn) { |
| 2397 | register struct hci_proto *hp; |
| 2398 | |
| 2399 | /* Send to upper protocol */ |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2400 | hp = hci_proto[HCI_PROTO_SCO]; |
| 2401 | if (hp && hp->recv_scodata) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | hp->recv_scodata(conn, skb); |
| 2403 | return; |
| 2404 | } |
| 2405 | } else { |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 2406 | BT_ERR("%s SCO packet for unknown connection handle %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | hdev->name, handle); |
| 2408 | } |
| 2409 | |
| 2410 | kfree_skb(skb); |
| 2411 | } |
| 2412 | |
Marcel Holtmann | 6516455 | 2005-10-28 19:20:48 +0200 | [diff] [blame] | 2413 | static void hci_rx_task(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | { |
| 2415 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2416 | struct sk_buff *skb; |
| 2417 | |
| 2418 | BT_DBG("%s", hdev->name); |
| 2419 | |
| 2420 | read_lock(&hci_task_lock); |
| 2421 | |
| 2422 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
| 2423 | if (atomic_read(&hdev->promisc)) { |
| 2424 | /* Send copy to the sockets */ |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 2425 | hci_send_to_sock(hdev, skb, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | } |
| 2427 | |
| 2428 | if (test_bit(HCI_RAW, &hdev->flags)) { |
| 2429 | kfree_skb(skb); |
| 2430 | continue; |
| 2431 | } |
| 2432 | |
| 2433 | if (test_bit(HCI_INIT, &hdev->flags)) { |
| 2434 | /* Don't process data packets in this states. */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2435 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | case HCI_ACLDATA_PKT: |
| 2437 | case HCI_SCODATA_PKT: |
| 2438 | kfree_skb(skb); |
| 2439 | continue; |
Stephen Hemminger | 3ff50b7 | 2007-04-20 17:09:22 -0700 | [diff] [blame] | 2440 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | } |
| 2442 | |
| 2443 | /* Process frame */ |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 2444 | switch (bt_cb(skb)->pkt_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | case HCI_EVENT_PKT: |
| 2446 | hci_event_packet(hdev, skb); |
| 2447 | break; |
| 2448 | |
| 2449 | case HCI_ACLDATA_PKT: |
| 2450 | BT_DBG("%s ACL data packet", hdev->name); |
| 2451 | hci_acldata_packet(hdev, skb); |
| 2452 | break; |
| 2453 | |
| 2454 | case HCI_SCODATA_PKT: |
| 2455 | BT_DBG("%s SCO data packet", hdev->name); |
| 2456 | hci_scodata_packet(hdev, skb); |
| 2457 | break; |
| 2458 | |
| 2459 | default: |
| 2460 | kfree_skb(skb); |
| 2461 | break; |
| 2462 | } |
| 2463 | } |
| 2464 | |
| 2465 | read_unlock(&hci_task_lock); |
| 2466 | } |
| 2467 | |
| 2468 | static void hci_cmd_task(unsigned long arg) |
| 2469 | { |
| 2470 | struct hci_dev *hdev = (struct hci_dev *) arg; |
| 2471 | struct sk_buff *skb; |
| 2472 | |
| 2473 | BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); |
| 2474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | /* Send queued commands */ |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 2476 | if (atomic_read(&hdev->cmd_cnt)) { |
| 2477 | skb = skb_dequeue(&hdev->cmd_q); |
| 2478 | if (!skb) |
| 2479 | return; |
| 2480 | |
Wei Yongjun | 7585b97 | 2009-02-25 18:29:52 +0800 | [diff] [blame] | 2481 | kfree_skb(hdev->sent_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2482 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 2483 | hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); |
| 2484 | if (hdev->sent_cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | atomic_dec(&hdev->cmd_cnt); |
| 2486 | hci_send_frame(skb); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2487 | mod_timer(&hdev->cmd_timer, |
Ville Tervo | 6bd3232 | 2011-02-16 16:32:41 +0200 | [diff] [blame] | 2488 | jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2489 | } else { |
| 2490 | skb_queue_head(&hdev->cmd_q, skb); |
Marcel Holtmann | c78ae28 | 2009-11-18 01:02:54 +0100 | [diff] [blame] | 2491 | tasklet_schedule(&hdev->cmd_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | } |
| 2493 | } |
| 2494 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 2495 | |
| 2496 | module_param(enable_smp, bool, 0644); |
| 2497 | MODULE_PARM_DESC(enable_smp, "Enable SMP support (LE only)"); |