11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds BlueZ - Bluetooth protocol stack for Linux 31da177e4SLinus Torvalds Copyright (C) 2000-2001 Qualcomm Incorporated 4590051deSGustavo F. Padovan Copyright (C) 2011 ProFUSION Embedded Systems 51da177e4SLinus Torvalds 61da177e4SLinus Torvalds Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This program is free software; you can redistribute it and/or modify 91da177e4SLinus Torvalds it under the terms of the GNU General Public License version 2 as 101da177e4SLinus Torvalds published by the Free Software Foundation; 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 131da177e4SLinus Torvalds OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 141da177e4SLinus Torvalds FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 151da177e4SLinus Torvalds IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 161da177e4SLinus Torvalds CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 171da177e4SLinus Torvalds WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 181da177e4SLinus Torvalds ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 191da177e4SLinus Torvalds OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 221da177e4SLinus Torvalds COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 231da177e4SLinus Torvalds SOFTWARE IS DISCLAIMED. 241da177e4SLinus Torvalds */ 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds /* Bluetooth HCI core. */ 271da177e4SLinus Torvalds 2882453021SS.Çağlar Onur #include <linux/jiffies.h> 291da177e4SLinus Torvalds #include <linux/module.h> 301da177e4SLinus Torvalds #include <linux/kmod.h> 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds #include <linux/types.h> 331da177e4SLinus Torvalds #include <linux/errno.h> 341da177e4SLinus Torvalds #include <linux/kernel.h> 351da177e4SLinus Torvalds #include <linux/sched.h> 361da177e4SLinus Torvalds #include <linux/slab.h> 371da177e4SLinus Torvalds #include <linux/poll.h> 381da177e4SLinus Torvalds #include <linux/fcntl.h> 391da177e4SLinus Torvalds #include <linux/init.h> 401da177e4SLinus Torvalds #include <linux/skbuff.h> 41f48fd9c8SMarcel Holtmann #include <linux/workqueue.h> 421da177e4SLinus Torvalds #include <linux/interrupt.h> 431da177e4SLinus Torvalds #include <linux/notifier.h> 44611b30f7SMarcel Holtmann #include <linux/rfkill.h> 456bd32326SVille Tervo #include <linux/timer.h> 463a0259bbSVinicius Costa Gomes #include <linux/crypto.h> 471da177e4SLinus Torvalds #include <net/sock.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds #include <asm/system.h> 5070f23020SAndrei Emeltchenko #include <linux/uaccess.h> 511da177e4SLinus Torvalds #include <asm/unaligned.h> 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds #include <net/bluetooth/bluetooth.h> 541da177e4SLinus Torvalds #include <net/bluetooth/hci_core.h> 551da177e4SLinus Torvalds 56ab81cbf9SJohan Hedberg #define AUTO_OFF_TIMEOUT 2000 57ab81cbf9SJohan Hedberg 588b281b9cSFabio Estevam bool enable_hs; 597784d78fSAndrei Emeltchenko 60b78752ccSMarcel Holtmann static void hci_rx_work(struct work_struct *work); 61c347b765SGustavo F. Padovan static void hci_cmd_work(struct work_struct *work); 623eff45eaSGustavo F. Padovan static void hci_tx_work(struct work_struct *work); 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds /* HCI device list */ 651da177e4SLinus Torvalds LIST_HEAD(hci_dev_list); 661da177e4SLinus Torvalds DEFINE_RWLOCK(hci_dev_list_lock); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds /* HCI callback list */ 691da177e4SLinus Torvalds LIST_HEAD(hci_cb_list); 701da177e4SLinus Torvalds DEFINE_RWLOCK(hci_cb_list_lock); 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds /* HCI notifiers list */ 73e041c683SAlan Stern static ATOMIC_NOTIFIER_HEAD(hci_notifier); 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds /* ---- HCI notifications ---- */ 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds int hci_register_notifier(struct notifier_block *nb) 781da177e4SLinus Torvalds { 79e041c683SAlan Stern return atomic_notifier_chain_register(&hci_notifier, nb); 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds int hci_unregister_notifier(struct notifier_block *nb) 831da177e4SLinus Torvalds { 84e041c683SAlan Stern return atomic_notifier_chain_unregister(&hci_notifier, nb); 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 876516455dSMarcel Holtmann static void hci_notify(struct hci_dev *hdev, int event) 881da177e4SLinus Torvalds { 89e041c683SAlan Stern atomic_notifier_call_chain(&hci_notifier, event, hdev); 901da177e4SLinus Torvalds } 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds /* ---- HCI requests ---- */ 931da177e4SLinus Torvalds 9423bb5763SJohan Hedberg void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) 951da177e4SLinus Torvalds { 9623bb5763SJohan Hedberg BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); 9723bb5763SJohan Hedberg 98a5040efaSJohan Hedberg /* If this is the init phase check if the completed command matches 99a5040efaSJohan Hedberg * the last init command, and if not just return. 100a5040efaSJohan Hedberg */ 101a5040efaSJohan Hedberg if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) 10223bb5763SJohan Hedberg return; 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 1051da177e4SLinus Torvalds hdev->req_result = result; 1061da177e4SLinus Torvalds hdev->req_status = HCI_REQ_DONE; 1071da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1081da177e4SLinus Torvalds } 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static void hci_req_cancel(struct hci_dev *hdev, int err) 1121da177e4SLinus Torvalds { 1131da177e4SLinus Torvalds BT_DBG("%s err 0x%2.2x", hdev->name, err); 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 1161da177e4SLinus Torvalds hdev->req_result = err; 1171da177e4SLinus Torvalds hdev->req_status = HCI_REQ_CANCELED; 1181da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1191da177e4SLinus Torvalds } 1201da177e4SLinus Torvalds } 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds /* Execute request and wait for completion. */ 1231da177e4SLinus Torvalds static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1241da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1251da177e4SLinus Torvalds { 1261da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 1271da177e4SLinus Torvalds int err = 0; 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds BT_DBG("%s start", hdev->name); 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds hdev->req_status = HCI_REQ_PEND; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds add_wait_queue(&hdev->req_wait_q, &wait); 1341da177e4SLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds req(hdev, opt); 1371da177e4SLinus Torvalds schedule_timeout(timeout); 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds remove_wait_queue(&hdev->req_wait_q, &wait); 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds if (signal_pending(current)) 1421da177e4SLinus Torvalds return -EINTR; 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds switch (hdev->req_status) { 1451da177e4SLinus Torvalds case HCI_REQ_DONE: 146e175072fSJoe Perches err = -bt_to_errno(hdev->req_result); 1471da177e4SLinus Torvalds break; 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds case HCI_REQ_CANCELED: 1501da177e4SLinus Torvalds err = -hdev->req_result; 1511da177e4SLinus Torvalds break; 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds default: 1541da177e4SLinus Torvalds err = -ETIMEDOUT; 1551da177e4SLinus Torvalds break; 1563ff50b79SStephen Hemminger } 1571da177e4SLinus Torvalds 158a5040efaSJohan Hedberg hdev->req_status = hdev->req_result = 0; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds BT_DBG("%s end: err %d", hdev->name, err); 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds return err; 1631da177e4SLinus Torvalds } 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1661da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1671da177e4SLinus Torvalds { 1681da177e4SLinus Torvalds int ret; 1691da177e4SLinus Torvalds 1707c6a329eSMarcel Holtmann if (!test_bit(HCI_UP, &hdev->flags)) 1717c6a329eSMarcel Holtmann return -ENETDOWN; 1727c6a329eSMarcel Holtmann 1731da177e4SLinus Torvalds /* Serialize all requests */ 1741da177e4SLinus Torvalds hci_req_lock(hdev); 1751da177e4SLinus Torvalds ret = __hci_request(hdev, req, opt, timeout); 1761da177e4SLinus Torvalds hci_req_unlock(hdev); 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds return ret; 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds /* Reset device */ 186f630cf0dSGustavo F. Padovan set_bit(HCI_RESET, &hdev->flags); 187a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds 190e61ef499SAndrei Emeltchenko static void bredr_init(struct hci_dev *hdev) 1911da177e4SLinus Torvalds { 192b0916ea0SJohan Hedberg struct hci_cp_delete_stored_link_key cp; 1931ebb9252SMarcel Holtmann __le16 param; 19489f2783dSMarcel Holtmann __u8 flt_type; 1951da177e4SLinus Torvalds 1962455a3eaSAndrei Emeltchenko hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; 1972455a3eaSAndrei Emeltchenko 1981da177e4SLinus Torvalds /* Mandatory initialization */ 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds /* Reset */ 201f630cf0dSGustavo F. Padovan if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) { 202f630cf0dSGustavo F. Padovan set_bit(HCI_RESET, &hdev->flags); 203a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 204f630cf0dSGustavo F. Padovan } 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds /* Read Local Supported Features */ 207a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); 2081da177e4SLinus Torvalds 2091143e5a6SMarcel Holtmann /* Read Local Version */ 210a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 2111143e5a6SMarcel Holtmann 2121da177e4SLinus Torvalds /* Read Buffer Size (ACL mtu, max pkt, etc.) */ 213a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds /* Read BD Address */ 216a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); 217a9de9248SMarcel Holtmann 218a9de9248SMarcel Holtmann /* Read Class of Device */ 219a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); 220a9de9248SMarcel Holtmann 221a9de9248SMarcel Holtmann /* Read Local Name */ 222a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds /* Read Voice Setting */ 225a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds /* Optional initialization */ 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds /* Clear Event Filters */ 23089f2783dSMarcel Holtmann flt_type = HCI_FLT_CLEAR_ALL; 231a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds /* Connection accept timeout ~20 secs */ 234aca3192cSYOSHIFUJI Hideaki param = cpu_to_le16(0x7d00); 235a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); 236b0916ea0SJohan Hedberg 237b0916ea0SJohan Hedberg bacpy(&cp.bdaddr, BDADDR_ANY); 238b0916ea0SJohan Hedberg cp.delete_all = 1; 239b0916ea0SJohan Hedberg hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds 242e61ef499SAndrei Emeltchenko static void amp_init(struct hci_dev *hdev) 243e61ef499SAndrei Emeltchenko { 2442455a3eaSAndrei Emeltchenko hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; 2452455a3eaSAndrei Emeltchenko 246e61ef499SAndrei Emeltchenko /* Reset */ 247e61ef499SAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 248e61ef499SAndrei Emeltchenko 249e61ef499SAndrei Emeltchenko /* Read Local Version */ 250e61ef499SAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 251e61ef499SAndrei Emeltchenko } 252e61ef499SAndrei Emeltchenko 253e61ef499SAndrei Emeltchenko static void hci_init_req(struct hci_dev *hdev, unsigned long opt) 254e61ef499SAndrei Emeltchenko { 255e61ef499SAndrei Emeltchenko struct sk_buff *skb; 256e61ef499SAndrei Emeltchenko 257e61ef499SAndrei Emeltchenko BT_DBG("%s %ld", hdev->name, opt); 258e61ef499SAndrei Emeltchenko 259e61ef499SAndrei Emeltchenko /* Driver initialization */ 260e61ef499SAndrei Emeltchenko 261e61ef499SAndrei Emeltchenko /* Special commands */ 262e61ef499SAndrei Emeltchenko while ((skb = skb_dequeue(&hdev->driver_init))) { 263e61ef499SAndrei Emeltchenko bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 264e61ef499SAndrei Emeltchenko skb->dev = (void *) hdev; 265e61ef499SAndrei Emeltchenko 266e61ef499SAndrei Emeltchenko skb_queue_tail(&hdev->cmd_q, skb); 267e61ef499SAndrei Emeltchenko queue_work(hdev->workqueue, &hdev->cmd_work); 268e61ef499SAndrei Emeltchenko } 269e61ef499SAndrei Emeltchenko skb_queue_purge(&hdev->driver_init); 270e61ef499SAndrei Emeltchenko 271e61ef499SAndrei Emeltchenko switch (hdev->dev_type) { 272e61ef499SAndrei Emeltchenko case HCI_BREDR: 273e61ef499SAndrei Emeltchenko bredr_init(hdev); 274e61ef499SAndrei Emeltchenko break; 275e61ef499SAndrei Emeltchenko 276e61ef499SAndrei Emeltchenko case HCI_AMP: 277e61ef499SAndrei Emeltchenko amp_init(hdev); 278e61ef499SAndrei Emeltchenko break; 279e61ef499SAndrei Emeltchenko 280e61ef499SAndrei Emeltchenko default: 281e61ef499SAndrei Emeltchenko BT_ERR("Unknown device type %d", hdev->dev_type); 282e61ef499SAndrei Emeltchenko break; 283e61ef499SAndrei Emeltchenko } 284e61ef499SAndrei Emeltchenko 285e61ef499SAndrei Emeltchenko } 286e61ef499SAndrei Emeltchenko 2876ed58ec5SVille Tervo static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) 2886ed58ec5SVille Tervo { 2896ed58ec5SVille Tervo BT_DBG("%s", hdev->name); 2906ed58ec5SVille Tervo 2916ed58ec5SVille Tervo /* Read LE buffer size */ 2926ed58ec5SVille Tervo hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); 2936ed58ec5SVille Tervo } 2946ed58ec5SVille Tervo 2951da177e4SLinus Torvalds static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) 2961da177e4SLinus Torvalds { 2971da177e4SLinus Torvalds __u8 scan = opt; 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, scan); 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds /* Inquiry and Page scans */ 302a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 3031da177e4SLinus Torvalds } 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) 3061da177e4SLinus Torvalds { 3071da177e4SLinus Torvalds __u8 auth = opt; 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, auth); 3101da177e4SLinus Torvalds 3111da177e4SLinus Torvalds /* Authentication */ 312a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) 3161da177e4SLinus Torvalds { 3171da177e4SLinus Torvalds __u8 encrypt = opt; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, encrypt); 3201da177e4SLinus Torvalds 321e4e8e37cSMarcel Holtmann /* Encryption */ 322a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds 325e4e8e37cSMarcel Holtmann static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) 326e4e8e37cSMarcel Holtmann { 327e4e8e37cSMarcel Holtmann __le16 policy = cpu_to_le16(opt); 328e4e8e37cSMarcel Holtmann 329a418b893SMarcel Holtmann BT_DBG("%s %x", hdev->name, policy); 330e4e8e37cSMarcel Holtmann 331e4e8e37cSMarcel Holtmann /* Default link policy */ 332e4e8e37cSMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); 333e4e8e37cSMarcel Holtmann } 334e4e8e37cSMarcel Holtmann 3351da177e4SLinus Torvalds /* Get HCI device by index. 3361da177e4SLinus Torvalds * Device is held on return. */ 3371da177e4SLinus Torvalds struct hci_dev *hci_dev_get(int index) 3381da177e4SLinus Torvalds { 3398035ded4SLuiz Augusto von Dentz struct hci_dev *hdev = NULL, *d; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds BT_DBG("%d", index); 3421da177e4SLinus Torvalds 3431da177e4SLinus Torvalds if (index < 0) 3441da177e4SLinus Torvalds return NULL; 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds read_lock(&hci_dev_list_lock); 3478035ded4SLuiz Augusto von Dentz list_for_each_entry(d, &hci_dev_list, list) { 3481da177e4SLinus Torvalds if (d->id == index) { 3491da177e4SLinus Torvalds hdev = hci_dev_hold(d); 3501da177e4SLinus Torvalds break; 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds } 3531da177e4SLinus Torvalds read_unlock(&hci_dev_list_lock); 3541da177e4SLinus Torvalds return hdev; 3551da177e4SLinus Torvalds } 3561da177e4SLinus Torvalds 3571da177e4SLinus Torvalds /* ---- Inquiry support ---- */ 358ff9ef578SJohan Hedberg 35930dc78e1SJohan Hedberg bool hci_discovery_active(struct hci_dev *hdev) 36030dc78e1SJohan Hedberg { 36130dc78e1SJohan Hedberg struct discovery_state *discov = &hdev->discovery; 36230dc78e1SJohan Hedberg 36330dc78e1SJohan Hedberg if (discov->state == DISCOVERY_INQUIRY || 36430dc78e1SJohan Hedberg discov->state == DISCOVERY_RESOLVING) 36530dc78e1SJohan Hedberg return true; 36630dc78e1SJohan Hedberg 36730dc78e1SJohan Hedberg return false; 36830dc78e1SJohan Hedberg } 36930dc78e1SJohan Hedberg 370ff9ef578SJohan Hedberg void hci_discovery_set_state(struct hci_dev *hdev, int state) 371ff9ef578SJohan Hedberg { 372ff9ef578SJohan Hedberg BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); 373ff9ef578SJohan Hedberg 374ff9ef578SJohan Hedberg if (hdev->discovery.state == state) 375ff9ef578SJohan Hedberg return; 376ff9ef578SJohan Hedberg 377ff9ef578SJohan Hedberg switch (state) { 378ff9ef578SJohan Hedberg case DISCOVERY_STOPPED: 379ff9ef578SJohan Hedberg mgmt_discovering(hdev, 0); 380ff9ef578SJohan Hedberg break; 381ff9ef578SJohan Hedberg case DISCOVERY_STARTING: 382ff9ef578SJohan Hedberg break; 38330dc78e1SJohan Hedberg case DISCOVERY_INQUIRY: 384ff9ef578SJohan Hedberg mgmt_discovering(hdev, 1); 385ff9ef578SJohan Hedberg break; 38630dc78e1SJohan Hedberg case DISCOVERY_RESOLVING: 38730dc78e1SJohan Hedberg break; 388ff9ef578SJohan Hedberg case DISCOVERY_STOPPING: 389ff9ef578SJohan Hedberg break; 390ff9ef578SJohan Hedberg } 391ff9ef578SJohan Hedberg 392ff9ef578SJohan Hedberg hdev->discovery.state = state; 393ff9ef578SJohan Hedberg } 394ff9ef578SJohan Hedberg 3951da177e4SLinus Torvalds static void inquiry_cache_flush(struct hci_dev *hdev) 3961da177e4SLinus Torvalds { 39730883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 398b57c1a56SJohan Hedberg struct inquiry_entry *p, *n; 3991da177e4SLinus Torvalds 400561aafbcSJohan Hedberg list_for_each_entry_safe(p, n, &cache->all, all) { 401561aafbcSJohan Hedberg list_del(&p->all); 402b57c1a56SJohan Hedberg kfree(p); 4031da177e4SLinus Torvalds } 404561aafbcSJohan Hedberg 405561aafbcSJohan Hedberg INIT_LIST_HEAD(&cache->unknown); 406561aafbcSJohan Hedberg INIT_LIST_HEAD(&cache->resolve); 407ff9ef578SJohan Hedberg cache->state = DISCOVERY_STOPPED; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds 4101da177e4SLinus Torvalds struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) 4111da177e4SLinus Torvalds { 41230883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 4131da177e4SLinus Torvalds struct inquiry_entry *e; 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 4161da177e4SLinus Torvalds 417561aafbcSJohan Hedberg list_for_each_entry(e, &cache->all, all) { 4181da177e4SLinus Torvalds if (!bacmp(&e->data.bdaddr, bdaddr)) 4191da177e4SLinus Torvalds return e; 4201da177e4SLinus Torvalds } 4211da177e4SLinus Torvalds 422b57c1a56SJohan Hedberg return NULL; 423b57c1a56SJohan Hedberg } 424b57c1a56SJohan Hedberg 425561aafbcSJohan Hedberg struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 426561aafbcSJohan Hedberg bdaddr_t *bdaddr) 427561aafbcSJohan Hedberg { 42830883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 429561aafbcSJohan Hedberg struct inquiry_entry *e; 430561aafbcSJohan Hedberg 431561aafbcSJohan Hedberg BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 432561aafbcSJohan Hedberg 433561aafbcSJohan Hedberg list_for_each_entry(e, &cache->unknown, list) { 434561aafbcSJohan Hedberg if (!bacmp(&e->data.bdaddr, bdaddr)) 435561aafbcSJohan Hedberg return e; 436561aafbcSJohan Hedberg } 437561aafbcSJohan Hedberg 438561aafbcSJohan Hedberg return NULL; 439561aafbcSJohan Hedberg } 440561aafbcSJohan Hedberg 44130dc78e1SJohan Hedberg struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 44230dc78e1SJohan Hedberg bdaddr_t *bdaddr, 44330dc78e1SJohan Hedberg int state) 44430dc78e1SJohan Hedberg { 44530dc78e1SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 44630dc78e1SJohan Hedberg struct inquiry_entry *e; 44730dc78e1SJohan Hedberg 44830dc78e1SJohan Hedberg BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); 44930dc78e1SJohan Hedberg 45030dc78e1SJohan Hedberg list_for_each_entry(e, &cache->resolve, list) { 45130dc78e1SJohan Hedberg if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) 45230dc78e1SJohan Hedberg return e; 45330dc78e1SJohan Hedberg if (!bacmp(&e->data.bdaddr, bdaddr)) 45430dc78e1SJohan Hedberg return e; 45530dc78e1SJohan Hedberg } 45630dc78e1SJohan Hedberg 45730dc78e1SJohan Hedberg return NULL; 45830dc78e1SJohan Hedberg } 45930dc78e1SJohan Hedberg 460a3d4e20aSJohan Hedberg void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 461a3d4e20aSJohan Hedberg struct inquiry_entry *ie) 462a3d4e20aSJohan Hedberg { 463a3d4e20aSJohan Hedberg struct discovery_state *cache = &hdev->discovery; 464a3d4e20aSJohan Hedberg struct list_head *pos = &cache->resolve; 465a3d4e20aSJohan Hedberg struct inquiry_entry *p; 466a3d4e20aSJohan Hedberg 467a3d4e20aSJohan Hedberg list_del(&ie->list); 468a3d4e20aSJohan Hedberg 469a3d4e20aSJohan Hedberg list_for_each_entry(p, &cache->resolve, list) { 470a3d4e20aSJohan Hedberg if (p->name_state != NAME_PENDING && 471a3d4e20aSJohan Hedberg abs(p->data.rssi) >= abs(ie->data.rssi)) 472a3d4e20aSJohan Hedberg break; 473a3d4e20aSJohan Hedberg pos = &p->list; 474a3d4e20aSJohan Hedberg } 475a3d4e20aSJohan Hedberg 476a3d4e20aSJohan Hedberg list_add(&ie->list, pos); 477a3d4e20aSJohan Hedberg } 478a3d4e20aSJohan Hedberg 4793175405bSJohan Hedberg bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 480561aafbcSJohan Hedberg bool name_known) 4811da177e4SLinus Torvalds { 48230883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 48370f23020SAndrei Emeltchenko struct inquiry_entry *ie; 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); 4861da177e4SLinus Torvalds 48770f23020SAndrei Emeltchenko ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); 488a3d4e20aSJohan Hedberg if (ie) { 489a3d4e20aSJohan Hedberg if (ie->name_state == NAME_NEEDED && 490a3d4e20aSJohan Hedberg data->rssi != ie->data.rssi) { 491a3d4e20aSJohan Hedberg ie->data.rssi = data->rssi; 492a3d4e20aSJohan Hedberg hci_inquiry_cache_update_resolve(hdev, ie); 493a3d4e20aSJohan Hedberg } 494a3d4e20aSJohan Hedberg 495561aafbcSJohan Hedberg goto update; 496a3d4e20aSJohan Hedberg } 497561aafbcSJohan Hedberg 4981da177e4SLinus Torvalds /* Entry not in the cache. Add new one. */ 49970f23020SAndrei Emeltchenko ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); 50070f23020SAndrei Emeltchenko if (!ie) 5013175405bSJohan Hedberg return false; 50270f23020SAndrei Emeltchenko 503561aafbcSJohan Hedberg list_add(&ie->all, &cache->all); 504561aafbcSJohan Hedberg 505561aafbcSJohan Hedberg if (name_known) { 506561aafbcSJohan Hedberg ie->name_state = NAME_KNOWN; 507561aafbcSJohan Hedberg } else { 508561aafbcSJohan Hedberg ie->name_state = NAME_NOT_KNOWN; 509561aafbcSJohan Hedberg list_add(&ie->list, &cache->unknown); 510561aafbcSJohan Hedberg } 511561aafbcSJohan Hedberg 512561aafbcSJohan Hedberg update: 513561aafbcSJohan Hedberg if (name_known && ie->name_state != NAME_KNOWN && 514561aafbcSJohan Hedberg ie->name_state != NAME_PENDING) { 515561aafbcSJohan Hedberg ie->name_state = NAME_KNOWN; 516561aafbcSJohan Hedberg list_del(&ie->list); 5171da177e4SLinus Torvalds } 5181da177e4SLinus Torvalds 51970f23020SAndrei Emeltchenko memcpy(&ie->data, data, sizeof(*data)); 52070f23020SAndrei Emeltchenko ie->timestamp = jiffies; 5211da177e4SLinus Torvalds cache->timestamp = jiffies; 5223175405bSJohan Hedberg 5233175405bSJohan Hedberg if (ie->name_state == NAME_NOT_KNOWN) 5243175405bSJohan Hedberg return false; 5253175405bSJohan Hedberg 5263175405bSJohan Hedberg return true; 5271da177e4SLinus Torvalds } 5281da177e4SLinus Torvalds 5291da177e4SLinus Torvalds static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) 5301da177e4SLinus Torvalds { 53130883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 5321da177e4SLinus Torvalds struct inquiry_info *info = (struct inquiry_info *) buf; 5331da177e4SLinus Torvalds struct inquiry_entry *e; 5341da177e4SLinus Torvalds int copied = 0; 5351da177e4SLinus Torvalds 536561aafbcSJohan Hedberg list_for_each_entry(e, &cache->all, all) { 5371da177e4SLinus Torvalds struct inquiry_data *data = &e->data; 538b57c1a56SJohan Hedberg 539b57c1a56SJohan Hedberg if (copied >= num) 540b57c1a56SJohan Hedberg break; 541b57c1a56SJohan Hedberg 5421da177e4SLinus Torvalds bacpy(&info->bdaddr, &data->bdaddr); 5431da177e4SLinus Torvalds info->pscan_rep_mode = data->pscan_rep_mode; 5441da177e4SLinus Torvalds info->pscan_period_mode = data->pscan_period_mode; 5451da177e4SLinus Torvalds info->pscan_mode = data->pscan_mode; 5461da177e4SLinus Torvalds memcpy(info->dev_class, data->dev_class, 3); 5471da177e4SLinus Torvalds info->clock_offset = data->clock_offset; 548b57c1a56SJohan Hedberg 5491da177e4SLinus Torvalds info++; 550b57c1a56SJohan Hedberg copied++; 5511da177e4SLinus Torvalds } 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds BT_DBG("cache %p, copied %d", cache, copied); 5541da177e4SLinus Torvalds return copied; 5551da177e4SLinus Torvalds } 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) 5581da177e4SLinus Torvalds { 5591da177e4SLinus Torvalds struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; 5601da177e4SLinus Torvalds struct hci_cp_inquiry cp; 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds if (test_bit(HCI_INQUIRY, &hdev->flags)) 5651da177e4SLinus Torvalds return; 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds /* Start Inquiry */ 5681da177e4SLinus Torvalds memcpy(&cp.lap, &ir->lap, 3); 5691da177e4SLinus Torvalds cp.length = ir->length; 5701da177e4SLinus Torvalds cp.num_rsp = ir->num_rsp; 571a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 5721da177e4SLinus Torvalds } 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds int hci_inquiry(void __user *arg) 5751da177e4SLinus Torvalds { 5761da177e4SLinus Torvalds __u8 __user *ptr = arg; 5771da177e4SLinus Torvalds struct hci_inquiry_req ir; 5781da177e4SLinus Torvalds struct hci_dev *hdev; 5791da177e4SLinus Torvalds int err = 0, do_inquiry = 0, max_rsp; 5801da177e4SLinus Torvalds long timeo; 5811da177e4SLinus Torvalds __u8 *buf; 5821da177e4SLinus Torvalds 5831da177e4SLinus Torvalds if (copy_from_user(&ir, ptr, sizeof(ir))) 5841da177e4SLinus Torvalds return -EFAULT; 5851da177e4SLinus Torvalds 5865a08ecceSAndrei Emeltchenko hdev = hci_dev_get(ir.dev_id); 5875a08ecceSAndrei Emeltchenko if (!hdev) 5881da177e4SLinus Torvalds return -ENODEV; 5891da177e4SLinus Torvalds 59009fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 5911da177e4SLinus Torvalds if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || 5921da177e4SLinus Torvalds inquiry_cache_empty(hdev) || 5931da177e4SLinus Torvalds ir.flags & IREQ_CACHE_FLUSH) { 5941da177e4SLinus Torvalds inquiry_cache_flush(hdev); 5951da177e4SLinus Torvalds do_inquiry = 1; 5961da177e4SLinus Torvalds } 59709fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 5981da177e4SLinus Torvalds 59904837f64SMarcel Holtmann timeo = ir.length * msecs_to_jiffies(2000); 60070f23020SAndrei Emeltchenko 60170f23020SAndrei Emeltchenko if (do_inquiry) { 60270f23020SAndrei Emeltchenko err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); 60370f23020SAndrei Emeltchenko if (err < 0) 6041da177e4SLinus Torvalds goto done; 60570f23020SAndrei Emeltchenko } 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds /* for unlimited number of responses we will use buffer with 255 entries */ 6081da177e4SLinus Torvalds max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds /* cache_dump can't sleep. Therefore we allocate temp buffer and then 6111da177e4SLinus Torvalds * copy it to the user space. 6121da177e4SLinus Torvalds */ 61370f23020SAndrei Emeltchenko buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); 61470f23020SAndrei Emeltchenko if (!buf) { 6151da177e4SLinus Torvalds err = -ENOMEM; 6161da177e4SLinus Torvalds goto done; 6171da177e4SLinus Torvalds } 6181da177e4SLinus Torvalds 61909fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 6201da177e4SLinus Torvalds ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); 62109fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds BT_DBG("num_rsp %d", ir.num_rsp); 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds if (!copy_to_user(ptr, &ir, sizeof(ir))) { 6261da177e4SLinus Torvalds ptr += sizeof(ir); 6271da177e4SLinus Torvalds if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * 6281da177e4SLinus Torvalds ir.num_rsp)) 6291da177e4SLinus Torvalds err = -EFAULT; 6301da177e4SLinus Torvalds } else 6311da177e4SLinus Torvalds err = -EFAULT; 6321da177e4SLinus Torvalds 6331da177e4SLinus Torvalds kfree(buf); 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds done: 6361da177e4SLinus Torvalds hci_dev_put(hdev); 6371da177e4SLinus Torvalds return err; 6381da177e4SLinus Torvalds } 6391da177e4SLinus Torvalds 6401da177e4SLinus Torvalds /* ---- HCI ioctl helpers ---- */ 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds int hci_dev_open(__u16 dev) 6431da177e4SLinus Torvalds { 6441da177e4SLinus Torvalds struct hci_dev *hdev; 6451da177e4SLinus Torvalds int ret = 0; 6461da177e4SLinus Torvalds 6475a08ecceSAndrei Emeltchenko hdev = hci_dev_get(dev); 6485a08ecceSAndrei Emeltchenko if (!hdev) 6491da177e4SLinus Torvalds return -ENODEV; 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds hci_req_lock(hdev); 6541da177e4SLinus Torvalds 655611b30f7SMarcel Holtmann if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { 656611b30f7SMarcel Holtmann ret = -ERFKILL; 657611b30f7SMarcel Holtmann goto done; 658611b30f7SMarcel Holtmann } 659611b30f7SMarcel Holtmann 6601da177e4SLinus Torvalds if (test_bit(HCI_UP, &hdev->flags)) { 6611da177e4SLinus Torvalds ret = -EALREADY; 6621da177e4SLinus Torvalds goto done; 6631da177e4SLinus Torvalds } 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 6661da177e4SLinus Torvalds set_bit(HCI_RAW, &hdev->flags); 6671da177e4SLinus Torvalds 66807e3b94aSAndrei Emeltchenko /* Treat all non BR/EDR controllers as raw devices if 66907e3b94aSAndrei Emeltchenko enable_hs is not set */ 67007e3b94aSAndrei Emeltchenko if (hdev->dev_type != HCI_BREDR && !enable_hs) 671943da25dSMarcel Holtmann set_bit(HCI_RAW, &hdev->flags); 672943da25dSMarcel Holtmann 6731da177e4SLinus Torvalds if (hdev->open(hdev)) { 6741da177e4SLinus Torvalds ret = -EIO; 6751da177e4SLinus Torvalds goto done; 6761da177e4SLinus Torvalds } 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 6791da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 6801da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 681a5040efaSJohan Hedberg hdev->init_last_cmd = 0; 6821da177e4SLinus Torvalds 68304837f64SMarcel Holtmann ret = __hci_request(hdev, hci_init_req, 0, 68404837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6851da177e4SLinus Torvalds 686eead27daSAndre Guedes if (lmp_host_le_capable(hdev)) 6876ed58ec5SVille Tervo ret = __hci_request(hdev, hci_le_init_req, 0, 6886ed58ec5SVille Tervo msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6896ed58ec5SVille Tervo 6901da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 6911da177e4SLinus Torvalds } 6921da177e4SLinus Torvalds 6931da177e4SLinus Torvalds if (!ret) { 6941da177e4SLinus Torvalds hci_dev_hold(hdev); 6951da177e4SLinus Torvalds set_bit(HCI_UP, &hdev->flags); 6961da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UP); 697a8b2d5c2SJohan Hedberg if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { 69809fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 699744cf19eSJohan Hedberg mgmt_powered(hdev, 1); 70009fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 70156e5cb86SJohan Hedberg } 7021da177e4SLinus Torvalds } else { 7031da177e4SLinus Torvalds /* Init failed, cleanup */ 7043eff45eaSGustavo F. Padovan flush_work(&hdev->tx_work); 705c347b765SGustavo F. Padovan flush_work(&hdev->cmd_work); 706b78752ccSMarcel Holtmann flush_work(&hdev->rx_work); 7071da177e4SLinus Torvalds 7081da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7091da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds if (hdev->flush) 7121da177e4SLinus Torvalds hdev->flush(hdev); 7131da177e4SLinus Torvalds 7141da177e4SLinus Torvalds if (hdev->sent_cmd) { 7151da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 7161da177e4SLinus Torvalds hdev->sent_cmd = NULL; 7171da177e4SLinus Torvalds } 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds hdev->close(hdev); 7201da177e4SLinus Torvalds hdev->flags = 0; 7211da177e4SLinus Torvalds } 7221da177e4SLinus Torvalds 7231da177e4SLinus Torvalds done: 7241da177e4SLinus Torvalds hci_req_unlock(hdev); 7251da177e4SLinus Torvalds hci_dev_put(hdev); 7261da177e4SLinus Torvalds return ret; 7271da177e4SLinus Torvalds } 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds static int hci_dev_do_close(struct hci_dev *hdev) 7301da177e4SLinus Torvalds { 7311da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds hci_req_cancel(hdev, ENODEV); 7341da177e4SLinus Torvalds hci_req_lock(hdev); 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { 737b79f44c1SVinicius Costa Gomes del_timer_sync(&hdev->cmd_timer); 7381da177e4SLinus Torvalds hci_req_unlock(hdev); 7391da177e4SLinus Torvalds return 0; 7401da177e4SLinus Torvalds } 7411da177e4SLinus Torvalds 7423eff45eaSGustavo F. Padovan /* Flush RX and TX works */ 7433eff45eaSGustavo F. Padovan flush_work(&hdev->tx_work); 744b78752ccSMarcel Holtmann flush_work(&hdev->rx_work); 7451da177e4SLinus Torvalds 74616ab91abSJohan Hedberg if (hdev->discov_timeout > 0) { 747e0f9309fSJohan Hedberg cancel_delayed_work(&hdev->discov_off); 74816ab91abSJohan Hedberg hdev->discov_timeout = 0; 74916ab91abSJohan Hedberg } 75016ab91abSJohan Hedberg 751a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 752e0f9309fSJohan Hedberg cancel_delayed_work(&hdev->power_off); 7533243553fSJohan Hedberg 754a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) 7557d78525dSJohan Hedberg cancel_delayed_work(&hdev->service_cache); 7567d78525dSJohan Hedberg 75709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 7581da177e4SLinus Torvalds inquiry_cache_flush(hdev); 7591da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 76009fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 7611da177e4SLinus Torvalds 7621da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_DOWN); 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds if (hdev->flush) 7651da177e4SLinus Torvalds hdev->flush(hdev); 7661da177e4SLinus Torvalds 7671da177e4SLinus Torvalds /* Reset device */ 7681da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7691da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 7708af59467SJohan Hedberg if (!test_bit(HCI_RAW, &hdev->flags) && 7718af59467SJohan Hedberg test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) { 7721da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 77304837f64SMarcel Holtmann __hci_request(hdev, hci_reset_req, 0, 774cad44c2bSGustavo F. Padovan msecs_to_jiffies(250)); 7751da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds 778c347b765SGustavo F. Padovan /* flush cmd work */ 779c347b765SGustavo F. Padovan flush_work(&hdev->cmd_work); 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds /* Drop queues */ 7821da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 7831da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7841da177e4SLinus Torvalds skb_queue_purge(&hdev->raw_q); 7851da177e4SLinus Torvalds 7861da177e4SLinus Torvalds /* Drop last sent command */ 7871da177e4SLinus Torvalds if (hdev->sent_cmd) { 788b79f44c1SVinicius Costa Gomes del_timer_sync(&hdev->cmd_timer); 7891da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 7901da177e4SLinus Torvalds hdev->sent_cmd = NULL; 7911da177e4SLinus Torvalds } 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvalds /* After this point our queues are empty 7941da177e4SLinus Torvalds * and no tasks are scheduled. */ 7951da177e4SLinus Torvalds hdev->close(hdev); 7961da177e4SLinus Torvalds 79709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 798744cf19eSJohan Hedberg mgmt_powered(hdev, 0); 79909fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 8005add6af8SJohan Hedberg 8011da177e4SLinus Torvalds /* Clear flags */ 8021da177e4SLinus Torvalds hdev->flags = 0; 8031da177e4SLinus Torvalds 8041da177e4SLinus Torvalds hci_req_unlock(hdev); 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds hci_dev_put(hdev); 8071da177e4SLinus Torvalds return 0; 8081da177e4SLinus Torvalds } 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds int hci_dev_close(__u16 dev) 8111da177e4SLinus Torvalds { 8121da177e4SLinus Torvalds struct hci_dev *hdev; 8131da177e4SLinus Torvalds int err; 8141da177e4SLinus Torvalds 81570f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 81670f23020SAndrei Emeltchenko if (!hdev) 8171da177e4SLinus Torvalds return -ENODEV; 8181da177e4SLinus Torvalds err = hci_dev_do_close(hdev); 8191da177e4SLinus Torvalds hci_dev_put(hdev); 8201da177e4SLinus Torvalds return err; 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds int hci_dev_reset(__u16 dev) 8241da177e4SLinus Torvalds { 8251da177e4SLinus Torvalds struct hci_dev *hdev; 8261da177e4SLinus Torvalds int ret = 0; 8271da177e4SLinus Torvalds 82870f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 82970f23020SAndrei Emeltchenko if (!hdev) 8301da177e4SLinus Torvalds return -ENODEV; 8311da177e4SLinus Torvalds 8321da177e4SLinus Torvalds hci_req_lock(hdev); 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds if (!test_bit(HCI_UP, &hdev->flags)) 8351da177e4SLinus Torvalds goto done; 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds /* Drop queues */ 8381da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 8391da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 8401da177e4SLinus Torvalds 84109fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 8421da177e4SLinus Torvalds inquiry_cache_flush(hdev); 8431da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 84409fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 8451da177e4SLinus Torvalds 8461da177e4SLinus Torvalds if (hdev->flush) 8471da177e4SLinus Torvalds hdev->flush(hdev); 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 8506ed58ec5SVille Tervo hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) 85304837f64SMarcel Holtmann ret = __hci_request(hdev, hci_reset_req, 0, 85404837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds done: 8571da177e4SLinus Torvalds hci_req_unlock(hdev); 8581da177e4SLinus Torvalds hci_dev_put(hdev); 8591da177e4SLinus Torvalds return ret; 8601da177e4SLinus Torvalds } 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds int hci_dev_reset_stat(__u16 dev) 8631da177e4SLinus Torvalds { 8641da177e4SLinus Torvalds struct hci_dev *hdev; 8651da177e4SLinus Torvalds int ret = 0; 8661da177e4SLinus Torvalds 86770f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 86870f23020SAndrei Emeltchenko if (!hdev) 8691da177e4SLinus Torvalds return -ENODEV; 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds hci_dev_put(hdev); 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds return ret; 8761da177e4SLinus Torvalds } 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds int hci_dev_cmd(unsigned int cmd, void __user *arg) 8791da177e4SLinus Torvalds { 8801da177e4SLinus Torvalds struct hci_dev *hdev; 8811da177e4SLinus Torvalds struct hci_dev_req dr; 8821da177e4SLinus Torvalds int err = 0; 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds if (copy_from_user(&dr, arg, sizeof(dr))) 8851da177e4SLinus Torvalds return -EFAULT; 8861da177e4SLinus Torvalds 88770f23020SAndrei Emeltchenko hdev = hci_dev_get(dr.dev_id); 88870f23020SAndrei Emeltchenko if (!hdev) 8891da177e4SLinus Torvalds return -ENODEV; 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds switch (cmd) { 8921da177e4SLinus Torvalds case HCISETAUTH: 89304837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 89404837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 8951da177e4SLinus Torvalds break; 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds case HCISETENCRYPT: 8981da177e4SLinus Torvalds if (!lmp_encrypt_capable(hdev)) { 8991da177e4SLinus Torvalds err = -EOPNOTSUPP; 9001da177e4SLinus Torvalds break; 9011da177e4SLinus Torvalds } 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvalds if (!test_bit(HCI_AUTH, &hdev->flags)) { 9041da177e4SLinus Torvalds /* Auth must be enabled first */ 90504837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 90604837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 9071da177e4SLinus Torvalds if (err) 9081da177e4SLinus Torvalds break; 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds 91104837f64SMarcel Holtmann err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, 91204837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 9131da177e4SLinus Torvalds break; 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds case HCISETSCAN: 91604837f64SMarcel Holtmann err = hci_request(hdev, hci_scan_req, dr.dev_opt, 91704837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 9181da177e4SLinus Torvalds break; 9191da177e4SLinus Torvalds 9201da177e4SLinus Torvalds case HCISETLINKPOL: 921e4e8e37cSMarcel Holtmann err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, 922e4e8e37cSMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 9231da177e4SLinus Torvalds break; 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds case HCISETLINKMODE: 926e4e8e37cSMarcel Holtmann hdev->link_mode = ((__u16) dr.dev_opt) & 927e4e8e37cSMarcel Holtmann (HCI_LM_MASTER | HCI_LM_ACCEPT); 928e4e8e37cSMarcel Holtmann break; 929e4e8e37cSMarcel Holtmann 930e4e8e37cSMarcel Holtmann case HCISETPTYPE: 931e4e8e37cSMarcel Holtmann hdev->pkt_type = (__u16) dr.dev_opt; 9321da177e4SLinus Torvalds break; 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds case HCISETACLMTU: 9351da177e4SLinus Torvalds hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); 9361da177e4SLinus Torvalds hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); 9371da177e4SLinus Torvalds break; 9381da177e4SLinus Torvalds 9391da177e4SLinus Torvalds case HCISETSCOMTU: 9401da177e4SLinus Torvalds hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); 9411da177e4SLinus Torvalds hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); 9421da177e4SLinus Torvalds break; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds default: 9451da177e4SLinus Torvalds err = -EINVAL; 9461da177e4SLinus Torvalds break; 9471da177e4SLinus Torvalds } 948e4e8e37cSMarcel Holtmann 9491da177e4SLinus Torvalds hci_dev_put(hdev); 9501da177e4SLinus Torvalds return err; 9511da177e4SLinus Torvalds } 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds int hci_get_dev_list(void __user *arg) 9541da177e4SLinus Torvalds { 9558035ded4SLuiz Augusto von Dentz struct hci_dev *hdev; 9561da177e4SLinus Torvalds struct hci_dev_list_req *dl; 9571da177e4SLinus Torvalds struct hci_dev_req *dr; 9581da177e4SLinus Torvalds int n = 0, size, err; 9591da177e4SLinus Torvalds __u16 dev_num; 9601da177e4SLinus Torvalds 9611da177e4SLinus Torvalds if (get_user(dev_num, (__u16 __user *) arg)) 9621da177e4SLinus Torvalds return -EFAULT; 9631da177e4SLinus Torvalds 9641da177e4SLinus Torvalds if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) 9651da177e4SLinus Torvalds return -EINVAL; 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds size = sizeof(*dl) + dev_num * sizeof(*dr); 9681da177e4SLinus Torvalds 96970f23020SAndrei Emeltchenko dl = kzalloc(size, GFP_KERNEL); 97070f23020SAndrei Emeltchenko if (!dl) 9711da177e4SLinus Torvalds return -ENOMEM; 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds dr = dl->dev_req; 9741da177e4SLinus Torvalds 975f20d09d5SGustavo F. Padovan read_lock(&hci_dev_list_lock); 9768035ded4SLuiz Augusto von Dentz list_for_each_entry(hdev, &hci_dev_list, list) { 977a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 978e0f9309fSJohan Hedberg cancel_delayed_work(&hdev->power_off); 979c542a06cSJohan Hedberg 980a8b2d5c2SJohan Hedberg if (!test_bit(HCI_MGMT, &hdev->dev_flags)) 981a8b2d5c2SJohan Hedberg set_bit(HCI_PAIRABLE, &hdev->dev_flags); 982c542a06cSJohan Hedberg 9831da177e4SLinus Torvalds (dr + n)->dev_id = hdev->id; 9841da177e4SLinus Torvalds (dr + n)->dev_opt = hdev->flags; 985c542a06cSJohan Hedberg 9861da177e4SLinus Torvalds if (++n >= dev_num) 9871da177e4SLinus Torvalds break; 9881da177e4SLinus Torvalds } 989f20d09d5SGustavo F. Padovan read_unlock(&hci_dev_list_lock); 9901da177e4SLinus Torvalds 9911da177e4SLinus Torvalds dl->dev_num = n; 9921da177e4SLinus Torvalds size = sizeof(*dl) + n * sizeof(*dr); 9931da177e4SLinus Torvalds 9941da177e4SLinus Torvalds err = copy_to_user(arg, dl, size); 9951da177e4SLinus Torvalds kfree(dl); 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvalds return err ? -EFAULT : 0; 9981da177e4SLinus Torvalds } 9991da177e4SLinus Torvalds 10001da177e4SLinus Torvalds int hci_get_dev_info(void __user *arg) 10011da177e4SLinus Torvalds { 10021da177e4SLinus Torvalds struct hci_dev *hdev; 10031da177e4SLinus Torvalds struct hci_dev_info di; 10041da177e4SLinus Torvalds int err = 0; 10051da177e4SLinus Torvalds 10061da177e4SLinus Torvalds if (copy_from_user(&di, arg, sizeof(di))) 10071da177e4SLinus Torvalds return -EFAULT; 10081da177e4SLinus Torvalds 100970f23020SAndrei Emeltchenko hdev = hci_dev_get(di.dev_id); 101070f23020SAndrei Emeltchenko if (!hdev) 10111da177e4SLinus Torvalds return -ENODEV; 10121da177e4SLinus Torvalds 1013a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 10143243553fSJohan Hedberg cancel_delayed_work_sync(&hdev->power_off); 1015ab81cbf9SJohan Hedberg 1016a8b2d5c2SJohan Hedberg if (!test_bit(HCI_MGMT, &hdev->dev_flags)) 1017a8b2d5c2SJohan Hedberg set_bit(HCI_PAIRABLE, &hdev->dev_flags); 1018c542a06cSJohan Hedberg 10191da177e4SLinus Torvalds strcpy(di.name, hdev->name); 10201da177e4SLinus Torvalds di.bdaddr = hdev->bdaddr; 1021943da25dSMarcel Holtmann di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); 10221da177e4SLinus Torvalds di.flags = hdev->flags; 10231da177e4SLinus Torvalds di.pkt_type = hdev->pkt_type; 10241da177e4SLinus Torvalds di.acl_mtu = hdev->acl_mtu; 10251da177e4SLinus Torvalds di.acl_pkts = hdev->acl_pkts; 10261da177e4SLinus Torvalds di.sco_mtu = hdev->sco_mtu; 10271da177e4SLinus Torvalds di.sco_pkts = hdev->sco_pkts; 10281da177e4SLinus Torvalds di.link_policy = hdev->link_policy; 10291da177e4SLinus Torvalds di.link_mode = hdev->link_mode; 10301da177e4SLinus Torvalds 10311da177e4SLinus Torvalds memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); 10321da177e4SLinus Torvalds memcpy(&di.features, &hdev->features, sizeof(di.features)); 10331da177e4SLinus Torvalds 10341da177e4SLinus Torvalds if (copy_to_user(arg, &di, sizeof(di))) 10351da177e4SLinus Torvalds err = -EFAULT; 10361da177e4SLinus Torvalds 10371da177e4SLinus Torvalds hci_dev_put(hdev); 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds return err; 10401da177e4SLinus Torvalds } 10411da177e4SLinus Torvalds 10421da177e4SLinus Torvalds /* ---- Interface to HCI drivers ---- */ 10431da177e4SLinus Torvalds 1044611b30f7SMarcel Holtmann static int hci_rfkill_set_block(void *data, bool blocked) 1045611b30f7SMarcel Holtmann { 1046611b30f7SMarcel Holtmann struct hci_dev *hdev = data; 1047611b30f7SMarcel Holtmann 1048611b30f7SMarcel Holtmann BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); 1049611b30f7SMarcel Holtmann 1050611b30f7SMarcel Holtmann if (!blocked) 1051611b30f7SMarcel Holtmann return 0; 1052611b30f7SMarcel Holtmann 1053611b30f7SMarcel Holtmann hci_dev_do_close(hdev); 1054611b30f7SMarcel Holtmann 1055611b30f7SMarcel Holtmann return 0; 1056611b30f7SMarcel Holtmann } 1057611b30f7SMarcel Holtmann 1058611b30f7SMarcel Holtmann static const struct rfkill_ops hci_rfkill_ops = { 1059611b30f7SMarcel Holtmann .set_block = hci_rfkill_set_block, 1060611b30f7SMarcel Holtmann }; 1061611b30f7SMarcel Holtmann 10621da177e4SLinus Torvalds /* Alloc HCI device */ 10631da177e4SLinus Torvalds struct hci_dev *hci_alloc_dev(void) 10641da177e4SLinus Torvalds { 10651da177e4SLinus Torvalds struct hci_dev *hdev; 10661da177e4SLinus Torvalds 106725ea6db0SMarcel Holtmann hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); 10681da177e4SLinus Torvalds if (!hdev) 10691da177e4SLinus Torvalds return NULL; 10701da177e4SLinus Torvalds 10710ac7e700SDavid Herrmann hci_init_sysfs(hdev); 10721da177e4SLinus Torvalds skb_queue_head_init(&hdev->driver_init); 10731da177e4SLinus Torvalds 10741da177e4SLinus Torvalds return hdev; 10751da177e4SLinus Torvalds } 10761da177e4SLinus Torvalds EXPORT_SYMBOL(hci_alloc_dev); 10771da177e4SLinus Torvalds 10781da177e4SLinus Torvalds /* Free HCI device */ 10791da177e4SLinus Torvalds void hci_free_dev(struct hci_dev *hdev) 10801da177e4SLinus Torvalds { 10811da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 10821da177e4SLinus Torvalds 1083a91f2e39SMarcel Holtmann /* will free via device release */ 1084a91f2e39SMarcel Holtmann put_device(&hdev->dev); 10851da177e4SLinus Torvalds } 10861da177e4SLinus Torvalds EXPORT_SYMBOL(hci_free_dev); 10871da177e4SLinus Torvalds 1088ab81cbf9SJohan Hedberg static void hci_power_on(struct work_struct *work) 1089ab81cbf9SJohan Hedberg { 1090ab81cbf9SJohan Hedberg struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); 1091ab81cbf9SJohan Hedberg 1092ab81cbf9SJohan Hedberg BT_DBG("%s", hdev->name); 1093ab81cbf9SJohan Hedberg 1094ab81cbf9SJohan Hedberg if (hci_dev_open(hdev->id) < 0) 1095ab81cbf9SJohan Hedberg return; 1096ab81cbf9SJohan Hedberg 1097a8b2d5c2SJohan Hedberg if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 109880b7ab33SGustavo F. Padovan schedule_delayed_work(&hdev->power_off, 10993243553fSJohan Hedberg msecs_to_jiffies(AUTO_OFF_TIMEOUT)); 1100ab81cbf9SJohan Hedberg 1101a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) 1102744cf19eSJohan Hedberg mgmt_index_added(hdev); 1103ab81cbf9SJohan Hedberg } 1104ab81cbf9SJohan Hedberg 1105ab81cbf9SJohan Hedberg static void hci_power_off(struct work_struct *work) 1106ab81cbf9SJohan Hedberg { 11073243553fSJohan Hedberg struct hci_dev *hdev = container_of(work, struct hci_dev, 11083243553fSJohan Hedberg power_off.work); 1109ab81cbf9SJohan Hedberg 1110ab81cbf9SJohan Hedberg BT_DBG("%s", hdev->name); 1111ab81cbf9SJohan Hedberg 1112a8b2d5c2SJohan Hedberg clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); 11133243553fSJohan Hedberg 1114ab81cbf9SJohan Hedberg hci_dev_close(hdev->id); 1115ab81cbf9SJohan Hedberg } 1116ab81cbf9SJohan Hedberg 111716ab91abSJohan Hedberg static void hci_discov_off(struct work_struct *work) 111816ab91abSJohan Hedberg { 111916ab91abSJohan Hedberg struct hci_dev *hdev; 112016ab91abSJohan Hedberg u8 scan = SCAN_PAGE; 112116ab91abSJohan Hedberg 112216ab91abSJohan Hedberg hdev = container_of(work, struct hci_dev, discov_off.work); 112316ab91abSJohan Hedberg 112416ab91abSJohan Hedberg BT_DBG("%s", hdev->name); 112516ab91abSJohan Hedberg 112609fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 112716ab91abSJohan Hedberg 112816ab91abSJohan Hedberg hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); 112916ab91abSJohan Hedberg 113016ab91abSJohan Hedberg hdev->discov_timeout = 0; 113116ab91abSJohan Hedberg 113209fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 113316ab91abSJohan Hedberg } 113416ab91abSJohan Hedberg 11352aeb9a1aSJohan Hedberg int hci_uuids_clear(struct hci_dev *hdev) 11362aeb9a1aSJohan Hedberg { 11372aeb9a1aSJohan Hedberg struct list_head *p, *n; 11382aeb9a1aSJohan Hedberg 11392aeb9a1aSJohan Hedberg list_for_each_safe(p, n, &hdev->uuids) { 11402aeb9a1aSJohan Hedberg struct bt_uuid *uuid; 11412aeb9a1aSJohan Hedberg 11422aeb9a1aSJohan Hedberg uuid = list_entry(p, struct bt_uuid, list); 11432aeb9a1aSJohan Hedberg 11442aeb9a1aSJohan Hedberg list_del(p); 11452aeb9a1aSJohan Hedberg kfree(uuid); 11462aeb9a1aSJohan Hedberg } 11472aeb9a1aSJohan Hedberg 11482aeb9a1aSJohan Hedberg return 0; 11492aeb9a1aSJohan Hedberg } 11502aeb9a1aSJohan Hedberg 115155ed8ca1SJohan Hedberg int hci_link_keys_clear(struct hci_dev *hdev) 115255ed8ca1SJohan Hedberg { 115355ed8ca1SJohan Hedberg struct list_head *p, *n; 115455ed8ca1SJohan Hedberg 115555ed8ca1SJohan Hedberg list_for_each_safe(p, n, &hdev->link_keys) { 115655ed8ca1SJohan Hedberg struct link_key *key; 115755ed8ca1SJohan Hedberg 115855ed8ca1SJohan Hedberg key = list_entry(p, struct link_key, list); 115955ed8ca1SJohan Hedberg 116055ed8ca1SJohan Hedberg list_del(p); 116155ed8ca1SJohan Hedberg kfree(key); 116255ed8ca1SJohan Hedberg } 116355ed8ca1SJohan Hedberg 116455ed8ca1SJohan Hedberg return 0; 116555ed8ca1SJohan Hedberg } 116655ed8ca1SJohan Hedberg 1167b899efafSVinicius Costa Gomes int hci_smp_ltks_clear(struct hci_dev *hdev) 1168b899efafSVinicius Costa Gomes { 1169b899efafSVinicius Costa Gomes struct smp_ltk *k, *tmp; 1170b899efafSVinicius Costa Gomes 1171b899efafSVinicius Costa Gomes list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { 1172b899efafSVinicius Costa Gomes list_del(&k->list); 1173b899efafSVinicius Costa Gomes kfree(k); 1174b899efafSVinicius Costa Gomes } 1175b899efafSVinicius Costa Gomes 1176b899efafSVinicius Costa Gomes return 0; 1177b899efafSVinicius Costa Gomes } 1178b899efafSVinicius Costa Gomes 117955ed8ca1SJohan Hedberg struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) 118055ed8ca1SJohan Hedberg { 118155ed8ca1SJohan Hedberg struct link_key *k; 118255ed8ca1SJohan Hedberg 11838035ded4SLuiz Augusto von Dentz list_for_each_entry(k, &hdev->link_keys, list) 118455ed8ca1SJohan Hedberg if (bacmp(bdaddr, &k->bdaddr) == 0) 118555ed8ca1SJohan Hedberg return k; 118655ed8ca1SJohan Hedberg 118755ed8ca1SJohan Hedberg return NULL; 118855ed8ca1SJohan Hedberg } 118955ed8ca1SJohan Hedberg 1190d25e28abSJohan Hedberg static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, 1191d25e28abSJohan Hedberg u8 key_type, u8 old_key_type) 1192d25e28abSJohan Hedberg { 1193d25e28abSJohan Hedberg /* Legacy key */ 1194d25e28abSJohan Hedberg if (key_type < 0x03) 1195d25e28abSJohan Hedberg return 1; 1196d25e28abSJohan Hedberg 1197d25e28abSJohan Hedberg /* Debug keys are insecure so don't store them persistently */ 1198d25e28abSJohan Hedberg if (key_type == HCI_LK_DEBUG_COMBINATION) 1199d25e28abSJohan Hedberg return 0; 1200d25e28abSJohan Hedberg 1201d25e28abSJohan Hedberg /* Changed combination key and there's no previous one */ 1202d25e28abSJohan Hedberg if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) 1203d25e28abSJohan Hedberg return 0; 1204d25e28abSJohan Hedberg 1205d25e28abSJohan Hedberg /* Security mode 3 case */ 1206d25e28abSJohan Hedberg if (!conn) 1207d25e28abSJohan Hedberg return 1; 1208d25e28abSJohan Hedberg 1209d25e28abSJohan Hedberg /* Neither local nor remote side had no-bonding as requirement */ 1210d25e28abSJohan Hedberg if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) 1211d25e28abSJohan Hedberg return 1; 1212d25e28abSJohan Hedberg 1213d25e28abSJohan Hedberg /* Local side had dedicated bonding as requirement */ 1214d25e28abSJohan Hedberg if (conn->auth_type == 0x02 || conn->auth_type == 0x03) 1215d25e28abSJohan Hedberg return 1; 1216d25e28abSJohan Hedberg 1217d25e28abSJohan Hedberg /* Remote side had dedicated bonding as requirement */ 1218d25e28abSJohan Hedberg if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) 1219d25e28abSJohan Hedberg return 1; 1220d25e28abSJohan Hedberg 1221d25e28abSJohan Hedberg /* If none of the above criteria match, then don't store the key 1222d25e28abSJohan Hedberg * persistently */ 1223d25e28abSJohan Hedberg return 0; 1224d25e28abSJohan Hedberg } 1225d25e28abSJohan Hedberg 1226c9839a11SVinicius Costa Gomes struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) 122775d262c2SVinicius Costa Gomes { 1228c9839a11SVinicius Costa Gomes struct smp_ltk *k; 122975d262c2SVinicius Costa Gomes 1230c9839a11SVinicius Costa Gomes list_for_each_entry(k, &hdev->long_term_keys, list) { 1231c9839a11SVinicius Costa Gomes if (k->ediv != ediv || 1232c9839a11SVinicius Costa Gomes memcmp(rand, k->rand, sizeof(k->rand))) 123375d262c2SVinicius Costa Gomes continue; 123475d262c2SVinicius Costa Gomes 123575d262c2SVinicius Costa Gomes return k; 123675d262c2SVinicius Costa Gomes } 123775d262c2SVinicius Costa Gomes 123875d262c2SVinicius Costa Gomes return NULL; 123975d262c2SVinicius Costa Gomes } 124075d262c2SVinicius Costa Gomes EXPORT_SYMBOL(hci_find_ltk); 124175d262c2SVinicius Costa Gomes 1242c9839a11SVinicius Costa Gomes struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1243c9839a11SVinicius Costa Gomes u8 addr_type) 124475d262c2SVinicius Costa Gomes { 1245c9839a11SVinicius Costa Gomes struct smp_ltk *k; 124675d262c2SVinicius Costa Gomes 1247c9839a11SVinicius Costa Gomes list_for_each_entry(k, &hdev->long_term_keys, list) 1248c9839a11SVinicius Costa Gomes if (addr_type == k->bdaddr_type && 1249c9839a11SVinicius Costa Gomes bacmp(bdaddr, &k->bdaddr) == 0) 125075d262c2SVinicius Costa Gomes return k; 125175d262c2SVinicius Costa Gomes 125275d262c2SVinicius Costa Gomes return NULL; 125375d262c2SVinicius Costa Gomes } 1254c9839a11SVinicius Costa Gomes EXPORT_SYMBOL(hci_find_ltk_by_addr); 125575d262c2SVinicius Costa Gomes 1256d25e28abSJohan Hedberg int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 1257d25e28abSJohan Hedberg bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) 125855ed8ca1SJohan Hedberg { 125955ed8ca1SJohan Hedberg struct link_key *key, *old_key; 12604df378a1SJohan Hedberg u8 old_key_type, persistent; 126155ed8ca1SJohan Hedberg 126255ed8ca1SJohan Hedberg old_key = hci_find_link_key(hdev, bdaddr); 126355ed8ca1SJohan Hedberg if (old_key) { 126455ed8ca1SJohan Hedberg old_key_type = old_key->type; 126555ed8ca1SJohan Hedberg key = old_key; 126655ed8ca1SJohan Hedberg } else { 126712adcf3aSJohan Hedberg old_key_type = conn ? conn->key_type : 0xff; 126855ed8ca1SJohan Hedberg key = kzalloc(sizeof(*key), GFP_ATOMIC); 126955ed8ca1SJohan Hedberg if (!key) 127055ed8ca1SJohan Hedberg return -ENOMEM; 127155ed8ca1SJohan Hedberg list_add(&key->list, &hdev->link_keys); 127255ed8ca1SJohan Hedberg } 127355ed8ca1SJohan Hedberg 127455ed8ca1SJohan Hedberg BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); 127555ed8ca1SJohan Hedberg 1276d25e28abSJohan Hedberg /* Some buggy controller combinations generate a changed 1277d25e28abSJohan Hedberg * combination key for legacy pairing even when there's no 1278d25e28abSJohan Hedberg * previous key */ 1279d25e28abSJohan Hedberg if (type == HCI_LK_CHANGED_COMBINATION && 1280d25e28abSJohan Hedberg (!conn || conn->remote_auth == 0xff) && 1281655fe6ecSJohan Hedberg old_key_type == 0xff) { 1282d25e28abSJohan Hedberg type = HCI_LK_COMBINATION; 1283655fe6ecSJohan Hedberg if (conn) 1284655fe6ecSJohan Hedberg conn->key_type = type; 1285655fe6ecSJohan Hedberg } 1286d25e28abSJohan Hedberg 128755ed8ca1SJohan Hedberg bacpy(&key->bdaddr, bdaddr); 128855ed8ca1SJohan Hedberg memcpy(key->val, val, 16); 128955ed8ca1SJohan Hedberg key->pin_len = pin_len; 129055ed8ca1SJohan Hedberg 1291b6020ba0SWaldemar Rymarkiewicz if (type == HCI_LK_CHANGED_COMBINATION) 129255ed8ca1SJohan Hedberg key->type = old_key_type; 12934748fed2SJohan Hedberg else 12944748fed2SJohan Hedberg key->type = type; 12954748fed2SJohan Hedberg 12964df378a1SJohan Hedberg if (!new_key) 12974df378a1SJohan Hedberg return 0; 12984df378a1SJohan Hedberg 12994df378a1SJohan Hedberg persistent = hci_persistent_key(hdev, conn, type, old_key_type); 13004df378a1SJohan Hedberg 1301744cf19eSJohan Hedberg mgmt_new_link_key(hdev, key, persistent); 13024df378a1SJohan Hedberg 13034df378a1SJohan Hedberg if (!persistent) { 13044df378a1SJohan Hedberg list_del(&key->list); 13054df378a1SJohan Hedberg kfree(key); 13064df378a1SJohan Hedberg } 130755ed8ca1SJohan Hedberg 130855ed8ca1SJohan Hedberg return 0; 130955ed8ca1SJohan Hedberg } 131055ed8ca1SJohan Hedberg 1311c9839a11SVinicius Costa Gomes int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 1312c9839a11SVinicius Costa Gomes int new_key, u8 authenticated, u8 tk[16], 1313c9839a11SVinicius Costa Gomes u8 enc_size, u16 ediv, u8 rand[8]) 131475d262c2SVinicius Costa Gomes { 1315c9839a11SVinicius Costa Gomes struct smp_ltk *key, *old_key; 131675d262c2SVinicius Costa Gomes 1317c9839a11SVinicius Costa Gomes if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) 1318c9839a11SVinicius Costa Gomes return 0; 131975d262c2SVinicius Costa Gomes 1320c9839a11SVinicius Costa Gomes old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); 1321c9839a11SVinicius Costa Gomes if (old_key) 132275d262c2SVinicius Costa Gomes key = old_key; 1323c9839a11SVinicius Costa Gomes else { 1324c9839a11SVinicius Costa Gomes key = kzalloc(sizeof(*key), GFP_ATOMIC); 132575d262c2SVinicius Costa Gomes if (!key) 132675d262c2SVinicius Costa Gomes return -ENOMEM; 1327c9839a11SVinicius Costa Gomes list_add(&key->list, &hdev->long_term_keys); 132875d262c2SVinicius Costa Gomes } 132975d262c2SVinicius Costa Gomes 133075d262c2SVinicius Costa Gomes bacpy(&key->bdaddr, bdaddr); 1331c9839a11SVinicius Costa Gomes key->bdaddr_type = addr_type; 1332c9839a11SVinicius Costa Gomes memcpy(key->val, tk, sizeof(key->val)); 1333c9839a11SVinicius Costa Gomes key->authenticated = authenticated; 1334c9839a11SVinicius Costa Gomes key->ediv = ediv; 1335c9839a11SVinicius Costa Gomes key->enc_size = enc_size; 1336c9839a11SVinicius Costa Gomes key->type = type; 1337c9839a11SVinicius Costa Gomes memcpy(key->rand, rand, sizeof(key->rand)); 133875d262c2SVinicius Costa Gomes 1339c9839a11SVinicius Costa Gomes if (!new_key) 1340c9839a11SVinicius Costa Gomes return 0; 134175d262c2SVinicius Costa Gomes 1342261cc5aaSVinicius Costa Gomes if (type & HCI_SMP_LTK) 1343261cc5aaSVinicius Costa Gomes mgmt_new_ltk(hdev, key, 1); 1344261cc5aaSVinicius Costa Gomes 134575d262c2SVinicius Costa Gomes return 0; 134675d262c2SVinicius Costa Gomes } 134775d262c2SVinicius Costa Gomes 134855ed8ca1SJohan Hedberg int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) 134955ed8ca1SJohan Hedberg { 135055ed8ca1SJohan Hedberg struct link_key *key; 135155ed8ca1SJohan Hedberg 135255ed8ca1SJohan Hedberg key = hci_find_link_key(hdev, bdaddr); 135355ed8ca1SJohan Hedberg if (!key) 135455ed8ca1SJohan Hedberg return -ENOENT; 135555ed8ca1SJohan Hedberg 135655ed8ca1SJohan Hedberg BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 135755ed8ca1SJohan Hedberg 135855ed8ca1SJohan Hedberg list_del(&key->list); 135955ed8ca1SJohan Hedberg kfree(key); 136055ed8ca1SJohan Hedberg 136155ed8ca1SJohan Hedberg return 0; 136255ed8ca1SJohan Hedberg } 136355ed8ca1SJohan Hedberg 1364b899efafSVinicius Costa Gomes int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) 1365b899efafSVinicius Costa Gomes { 1366b899efafSVinicius Costa Gomes struct smp_ltk *k, *tmp; 1367b899efafSVinicius Costa Gomes 1368b899efafSVinicius Costa Gomes list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { 1369b899efafSVinicius Costa Gomes if (bacmp(bdaddr, &k->bdaddr)) 1370b899efafSVinicius Costa Gomes continue; 1371b899efafSVinicius Costa Gomes 1372b899efafSVinicius Costa Gomes BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 1373b899efafSVinicius Costa Gomes 1374b899efafSVinicius Costa Gomes list_del(&k->list); 1375b899efafSVinicius Costa Gomes kfree(k); 1376b899efafSVinicius Costa Gomes } 1377b899efafSVinicius Costa Gomes 1378b899efafSVinicius Costa Gomes return 0; 1379b899efafSVinicius Costa Gomes } 1380b899efafSVinicius Costa Gomes 13816bd32326SVille Tervo /* HCI command timer function */ 13826bd32326SVille Tervo static void hci_cmd_timer(unsigned long arg) 13836bd32326SVille Tervo { 13846bd32326SVille Tervo struct hci_dev *hdev = (void *) arg; 13856bd32326SVille Tervo 13866bd32326SVille Tervo BT_ERR("%s command tx timeout", hdev->name); 13876bd32326SVille Tervo atomic_set(&hdev->cmd_cnt, 1); 1388c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 13896bd32326SVille Tervo } 13906bd32326SVille Tervo 13912763eda6SSzymon Janc struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 13922763eda6SSzymon Janc bdaddr_t *bdaddr) 13932763eda6SSzymon Janc { 13942763eda6SSzymon Janc struct oob_data *data; 13952763eda6SSzymon Janc 13962763eda6SSzymon Janc list_for_each_entry(data, &hdev->remote_oob_data, list) 13972763eda6SSzymon Janc if (bacmp(bdaddr, &data->bdaddr) == 0) 13982763eda6SSzymon Janc return data; 13992763eda6SSzymon Janc 14002763eda6SSzymon Janc return NULL; 14012763eda6SSzymon Janc } 14022763eda6SSzymon Janc 14032763eda6SSzymon Janc int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) 14042763eda6SSzymon Janc { 14052763eda6SSzymon Janc struct oob_data *data; 14062763eda6SSzymon Janc 14072763eda6SSzymon Janc data = hci_find_remote_oob_data(hdev, bdaddr); 14082763eda6SSzymon Janc if (!data) 14092763eda6SSzymon Janc return -ENOENT; 14102763eda6SSzymon Janc 14112763eda6SSzymon Janc BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 14122763eda6SSzymon Janc 14132763eda6SSzymon Janc list_del(&data->list); 14142763eda6SSzymon Janc kfree(data); 14152763eda6SSzymon Janc 14162763eda6SSzymon Janc return 0; 14172763eda6SSzymon Janc } 14182763eda6SSzymon Janc 14192763eda6SSzymon Janc int hci_remote_oob_data_clear(struct hci_dev *hdev) 14202763eda6SSzymon Janc { 14212763eda6SSzymon Janc struct oob_data *data, *n; 14222763eda6SSzymon Janc 14232763eda6SSzymon Janc list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { 14242763eda6SSzymon Janc list_del(&data->list); 14252763eda6SSzymon Janc kfree(data); 14262763eda6SSzymon Janc } 14272763eda6SSzymon Janc 14282763eda6SSzymon Janc return 0; 14292763eda6SSzymon Janc } 14302763eda6SSzymon Janc 14312763eda6SSzymon Janc int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 14322763eda6SSzymon Janc u8 *randomizer) 14332763eda6SSzymon Janc { 14342763eda6SSzymon Janc struct oob_data *data; 14352763eda6SSzymon Janc 14362763eda6SSzymon Janc data = hci_find_remote_oob_data(hdev, bdaddr); 14372763eda6SSzymon Janc 14382763eda6SSzymon Janc if (!data) { 14392763eda6SSzymon Janc data = kmalloc(sizeof(*data), GFP_ATOMIC); 14402763eda6SSzymon Janc if (!data) 14412763eda6SSzymon Janc return -ENOMEM; 14422763eda6SSzymon Janc 14432763eda6SSzymon Janc bacpy(&data->bdaddr, bdaddr); 14442763eda6SSzymon Janc list_add(&data->list, &hdev->remote_oob_data); 14452763eda6SSzymon Janc } 14462763eda6SSzymon Janc 14472763eda6SSzymon Janc memcpy(data->hash, hash, sizeof(data->hash)); 14482763eda6SSzymon Janc memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); 14492763eda6SSzymon Janc 14502763eda6SSzymon Janc BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); 14512763eda6SSzymon Janc 14522763eda6SSzymon Janc return 0; 14532763eda6SSzymon Janc } 14542763eda6SSzymon Janc 1455b2a66aadSAntti Julku struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, 1456b2a66aadSAntti Julku bdaddr_t *bdaddr) 1457b2a66aadSAntti Julku { 1458b2a66aadSAntti Julku struct bdaddr_list *b; 1459b2a66aadSAntti Julku 14608035ded4SLuiz Augusto von Dentz list_for_each_entry(b, &hdev->blacklist, list) 1461b2a66aadSAntti Julku if (bacmp(bdaddr, &b->bdaddr) == 0) 1462b2a66aadSAntti Julku return b; 1463b2a66aadSAntti Julku 1464b2a66aadSAntti Julku return NULL; 1465b2a66aadSAntti Julku } 1466b2a66aadSAntti Julku 1467b2a66aadSAntti Julku int hci_blacklist_clear(struct hci_dev *hdev) 1468b2a66aadSAntti Julku { 1469b2a66aadSAntti Julku struct list_head *p, *n; 1470b2a66aadSAntti Julku 1471b2a66aadSAntti Julku list_for_each_safe(p, n, &hdev->blacklist) { 1472b2a66aadSAntti Julku struct bdaddr_list *b; 1473b2a66aadSAntti Julku 1474b2a66aadSAntti Julku b = list_entry(p, struct bdaddr_list, list); 1475b2a66aadSAntti Julku 1476b2a66aadSAntti Julku list_del(p); 1477b2a66aadSAntti Julku kfree(b); 1478b2a66aadSAntti Julku } 1479b2a66aadSAntti Julku 1480b2a66aadSAntti Julku return 0; 1481b2a66aadSAntti Julku } 1482b2a66aadSAntti Julku 1483b2a66aadSAntti Julku int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr) 1484b2a66aadSAntti Julku { 1485b2a66aadSAntti Julku struct bdaddr_list *entry; 1486b2a66aadSAntti Julku 1487b2a66aadSAntti Julku if (bacmp(bdaddr, BDADDR_ANY) == 0) 1488b2a66aadSAntti Julku return -EBADF; 1489b2a66aadSAntti Julku 14905e762444SAntti Julku if (hci_blacklist_lookup(hdev, bdaddr)) 14915e762444SAntti Julku return -EEXIST; 1492b2a66aadSAntti Julku 1493b2a66aadSAntti Julku entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); 14945e762444SAntti Julku if (!entry) 14955e762444SAntti Julku return -ENOMEM; 1496b2a66aadSAntti Julku 1497b2a66aadSAntti Julku bacpy(&entry->bdaddr, bdaddr); 1498b2a66aadSAntti Julku 1499b2a66aadSAntti Julku list_add(&entry->list, &hdev->blacklist); 1500b2a66aadSAntti Julku 1501744cf19eSJohan Hedberg return mgmt_device_blocked(hdev, bdaddr); 1502b2a66aadSAntti Julku } 1503b2a66aadSAntti Julku 1504b2a66aadSAntti Julku int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr) 1505b2a66aadSAntti Julku { 1506b2a66aadSAntti Julku struct bdaddr_list *entry; 1507b2a66aadSAntti Julku 15081ec918ceSSzymon Janc if (bacmp(bdaddr, BDADDR_ANY) == 0) 15095e762444SAntti Julku return hci_blacklist_clear(hdev); 1510b2a66aadSAntti Julku 1511b2a66aadSAntti Julku entry = hci_blacklist_lookup(hdev, bdaddr); 15121ec918ceSSzymon Janc if (!entry) 15135e762444SAntti Julku return -ENOENT; 1514b2a66aadSAntti Julku 1515b2a66aadSAntti Julku list_del(&entry->list); 1516b2a66aadSAntti Julku kfree(entry); 1517b2a66aadSAntti Julku 1518744cf19eSJohan Hedberg return mgmt_device_unblocked(hdev, bdaddr); 1519b2a66aadSAntti Julku } 1520b2a66aadSAntti Julku 1521db323f2fSGustavo F. Padovan static void hci_clear_adv_cache(struct work_struct *work) 152235815085SAndre Guedes { 1523db323f2fSGustavo F. Padovan struct hci_dev *hdev = container_of(work, struct hci_dev, 1524db323f2fSGustavo F. Padovan adv_work.work); 152535815085SAndre Guedes 152635815085SAndre Guedes hci_dev_lock(hdev); 152735815085SAndre Guedes 152835815085SAndre Guedes hci_adv_entries_clear(hdev); 152935815085SAndre Guedes 153035815085SAndre Guedes hci_dev_unlock(hdev); 153135815085SAndre Guedes } 153235815085SAndre Guedes 153376c8686fSAndre Guedes int hci_adv_entries_clear(struct hci_dev *hdev) 153476c8686fSAndre Guedes { 153576c8686fSAndre Guedes struct adv_entry *entry, *tmp; 153676c8686fSAndre Guedes 153776c8686fSAndre Guedes list_for_each_entry_safe(entry, tmp, &hdev->adv_entries, list) { 153876c8686fSAndre Guedes list_del(&entry->list); 153976c8686fSAndre Guedes kfree(entry); 154076c8686fSAndre Guedes } 154176c8686fSAndre Guedes 154276c8686fSAndre Guedes BT_DBG("%s adv cache cleared", hdev->name); 154376c8686fSAndre Guedes 154476c8686fSAndre Guedes return 0; 154576c8686fSAndre Guedes } 154676c8686fSAndre Guedes 154776c8686fSAndre Guedes struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr) 154876c8686fSAndre Guedes { 154976c8686fSAndre Guedes struct adv_entry *entry; 155076c8686fSAndre Guedes 155176c8686fSAndre Guedes list_for_each_entry(entry, &hdev->adv_entries, list) 155276c8686fSAndre Guedes if (bacmp(bdaddr, &entry->bdaddr) == 0) 155376c8686fSAndre Guedes return entry; 155476c8686fSAndre Guedes 155576c8686fSAndre Guedes return NULL; 155676c8686fSAndre Guedes } 155776c8686fSAndre Guedes 155876c8686fSAndre Guedes static inline int is_connectable_adv(u8 evt_type) 155976c8686fSAndre Guedes { 156076c8686fSAndre Guedes if (evt_type == ADV_IND || evt_type == ADV_DIRECT_IND) 156176c8686fSAndre Guedes return 1; 156276c8686fSAndre Guedes 156376c8686fSAndre Guedes return 0; 156476c8686fSAndre Guedes } 156576c8686fSAndre Guedes 156676c8686fSAndre Guedes int hci_add_adv_entry(struct hci_dev *hdev, 156776c8686fSAndre Guedes struct hci_ev_le_advertising_info *ev) 156876c8686fSAndre Guedes { 156976c8686fSAndre Guedes struct adv_entry *entry; 157076c8686fSAndre Guedes 157176c8686fSAndre Guedes if (!is_connectable_adv(ev->evt_type)) 157276c8686fSAndre Guedes return -EINVAL; 157376c8686fSAndre Guedes 157476c8686fSAndre Guedes /* Only new entries should be added to adv_entries. So, if 157576c8686fSAndre Guedes * bdaddr was found, don't add it. */ 157676c8686fSAndre Guedes if (hci_find_adv_entry(hdev, &ev->bdaddr)) 157776c8686fSAndre Guedes return 0; 157876c8686fSAndre Guedes 15794777bfdeSAndre Guedes entry = kzalloc(sizeof(*entry), GFP_KERNEL); 158076c8686fSAndre Guedes if (!entry) 158176c8686fSAndre Guedes return -ENOMEM; 158276c8686fSAndre Guedes 158376c8686fSAndre Guedes bacpy(&entry->bdaddr, &ev->bdaddr); 158476c8686fSAndre Guedes entry->bdaddr_type = ev->bdaddr_type; 158576c8686fSAndre Guedes 158676c8686fSAndre Guedes list_add(&entry->list, &hdev->adv_entries); 158776c8686fSAndre Guedes 158876c8686fSAndre Guedes BT_DBG("%s adv entry added: address %s type %u", hdev->name, 158976c8686fSAndre Guedes batostr(&entry->bdaddr), entry->bdaddr_type); 159076c8686fSAndre Guedes 159176c8686fSAndre Guedes return 0; 159276c8686fSAndre Guedes } 159376c8686fSAndre Guedes 15941da177e4SLinus Torvalds /* Register HCI device */ 15951da177e4SLinus Torvalds int hci_register_dev(struct hci_dev *hdev) 15961da177e4SLinus Torvalds { 15971da177e4SLinus Torvalds struct list_head *head = &hci_dev_list, *p; 159808add513SMat Martineau int i, id, error; 15991da177e4SLinus Torvalds 1600e9b9cfa1SDavid Herrmann BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 16011da177e4SLinus Torvalds 1602010666a1SDavid Herrmann if (!hdev->open || !hdev->close) 16031da177e4SLinus Torvalds return -EINVAL; 16041da177e4SLinus Torvalds 160508add513SMat Martineau /* Do not allow HCI_AMP devices to register at index 0, 160608add513SMat Martineau * so the index can be used as the AMP controller ID. 160708add513SMat Martineau */ 160808add513SMat Martineau id = (hdev->dev_type == HCI_BREDR) ? 0 : 1; 160908add513SMat Martineau 1610f20d09d5SGustavo F. Padovan write_lock(&hci_dev_list_lock); 16111da177e4SLinus Torvalds 16121da177e4SLinus Torvalds /* Find first available device id */ 16131da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 16141da177e4SLinus Torvalds if (list_entry(p, struct hci_dev, list)->id != id) 16151da177e4SLinus Torvalds break; 16161da177e4SLinus Torvalds head = p; id++; 16171da177e4SLinus Torvalds } 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvalds sprintf(hdev->name, "hci%d", id); 16201da177e4SLinus Torvalds hdev->id = id; 1621c6feeb28SAndrei Emeltchenko list_add_tail(&hdev->list, head); 16221da177e4SLinus Torvalds 162309fd0de5SGustavo F. Padovan mutex_init(&hdev->lock); 16241da177e4SLinus Torvalds 16251da177e4SLinus Torvalds hdev->flags = 0; 1626d23264a8SAndre Guedes hdev->dev_flags = 0; 16271da177e4SLinus Torvalds hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); 16285b7f9909SMarcel Holtmann hdev->esco_type = (ESCO_HV1); 16291da177e4SLinus Torvalds hdev->link_mode = (HCI_LM_ACCEPT); 163017fa4b9dSJohan Hedberg hdev->io_capability = 0x03; /* No Input No Output */ 16311da177e4SLinus Torvalds 163204837f64SMarcel Holtmann hdev->idle_timeout = 0; 163304837f64SMarcel Holtmann hdev->sniff_max_interval = 800; 163404837f64SMarcel Holtmann hdev->sniff_min_interval = 80; 163504837f64SMarcel Holtmann 1636b78752ccSMarcel Holtmann INIT_WORK(&hdev->rx_work, hci_rx_work); 1637c347b765SGustavo F. Padovan INIT_WORK(&hdev->cmd_work, hci_cmd_work); 16383eff45eaSGustavo F. Padovan INIT_WORK(&hdev->tx_work, hci_tx_work); 1639b78752ccSMarcel Holtmann 16401da177e4SLinus Torvalds 16411da177e4SLinus Torvalds skb_queue_head_init(&hdev->rx_q); 16421da177e4SLinus Torvalds skb_queue_head_init(&hdev->cmd_q); 16431da177e4SLinus Torvalds skb_queue_head_init(&hdev->raw_q); 16441da177e4SLinus Torvalds 16456bd32326SVille Tervo setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev); 16466bd32326SVille Tervo 1647cd4c5391SSuraj Sumangala for (i = 0; i < NUM_REASSEMBLY; i++) 1648ef222013SMarcel Holtmann hdev->reassembly[i] = NULL; 1649ef222013SMarcel Holtmann 16501da177e4SLinus Torvalds init_waitqueue_head(&hdev->req_wait_q); 1651a6a67efdSThomas Gleixner mutex_init(&hdev->req_lock); 16521da177e4SLinus Torvalds 165330883512SJohan Hedberg discovery_init(hdev); 16541da177e4SLinus Torvalds 16551da177e4SLinus Torvalds hci_conn_hash_init(hdev); 16561da177e4SLinus Torvalds 16572e58ef3eSJohan Hedberg INIT_LIST_HEAD(&hdev->mgmt_pending); 16582e58ef3eSJohan Hedberg 1659ea4bd8baSDavid Miller INIT_LIST_HEAD(&hdev->blacklist); 1660f0358568SJohan Hedberg 16612aeb9a1aSJohan Hedberg INIT_LIST_HEAD(&hdev->uuids); 16622aeb9a1aSJohan Hedberg 166355ed8ca1SJohan Hedberg INIT_LIST_HEAD(&hdev->link_keys); 1664b899efafSVinicius Costa Gomes INIT_LIST_HEAD(&hdev->long_term_keys); 166555ed8ca1SJohan Hedberg 16662763eda6SSzymon Janc INIT_LIST_HEAD(&hdev->remote_oob_data); 16672763eda6SSzymon Janc 166876c8686fSAndre Guedes INIT_LIST_HEAD(&hdev->adv_entries); 166976c8686fSAndre Guedes 1670db323f2fSGustavo F. Padovan INIT_DELAYED_WORK(&hdev->adv_work, hci_clear_adv_cache); 1671ab81cbf9SJohan Hedberg INIT_WORK(&hdev->power_on, hci_power_on); 16723243553fSJohan Hedberg INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); 1673ab81cbf9SJohan Hedberg 167416ab91abSJohan Hedberg INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); 167516ab91abSJohan Hedberg 16761da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 16771da177e4SLinus Torvalds 16781da177e4SLinus Torvalds atomic_set(&hdev->promisc, 0); 16791da177e4SLinus Torvalds 1680f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 16811da177e4SLinus Torvalds 168232845eb1SGustavo F. Padovan hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | 168332845eb1SGustavo F. Padovan WQ_MEM_RECLAIM, 1); 168433ca954dSDavid Herrmann if (!hdev->workqueue) { 168533ca954dSDavid Herrmann error = -ENOMEM; 168633ca954dSDavid Herrmann goto err; 168733ca954dSDavid Herrmann } 1688f48fd9c8SMarcel Holtmann 168933ca954dSDavid Herrmann error = hci_add_sysfs(hdev); 169033ca954dSDavid Herrmann if (error < 0) 169133ca954dSDavid Herrmann goto err_wqueue; 16921da177e4SLinus Torvalds 1693611b30f7SMarcel Holtmann hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, 1694611b30f7SMarcel Holtmann RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); 1695611b30f7SMarcel Holtmann if (hdev->rfkill) { 1696611b30f7SMarcel Holtmann if (rfkill_register(hdev->rfkill) < 0) { 1697611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 1698611b30f7SMarcel Holtmann hdev->rfkill = NULL; 1699611b30f7SMarcel Holtmann } 1700611b30f7SMarcel Holtmann } 1701611b30f7SMarcel Holtmann 1702a8b2d5c2SJohan Hedberg set_bit(HCI_AUTO_OFF, &hdev->dev_flags); 1703a8b2d5c2SJohan Hedberg set_bit(HCI_SETUP, &hdev->dev_flags); 17047f971041SGustavo F. Padovan schedule_work(&hdev->power_on); 1705ab81cbf9SJohan Hedberg 17061da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_REG); 1707dc946bd8SDavid Herrmann hci_dev_hold(hdev); 17081da177e4SLinus Torvalds 17091da177e4SLinus Torvalds return id; 1710f48fd9c8SMarcel Holtmann 171133ca954dSDavid Herrmann err_wqueue: 171233ca954dSDavid Herrmann destroy_workqueue(hdev->workqueue); 171333ca954dSDavid Herrmann err: 1714f20d09d5SGustavo F. Padovan write_lock(&hci_dev_list_lock); 1715f48fd9c8SMarcel Holtmann list_del(&hdev->list); 1716f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 1717f48fd9c8SMarcel Holtmann 171833ca954dSDavid Herrmann return error; 17191da177e4SLinus Torvalds } 17201da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_dev); 17211da177e4SLinus Torvalds 17221da177e4SLinus Torvalds /* Unregister HCI device */ 172359735631SDavid Herrmann void hci_unregister_dev(struct hci_dev *hdev) 17241da177e4SLinus Torvalds { 1725ef222013SMarcel Holtmann int i; 1726ef222013SMarcel Holtmann 1727c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 17281da177e4SLinus Torvalds 1729f20d09d5SGustavo F. Padovan write_lock(&hci_dev_list_lock); 17301da177e4SLinus Torvalds list_del(&hdev->list); 1731f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 17321da177e4SLinus Torvalds 17331da177e4SLinus Torvalds hci_dev_do_close(hdev); 17341da177e4SLinus Torvalds 1735cd4c5391SSuraj Sumangala for (i = 0; i < NUM_REASSEMBLY; i++) 1736ef222013SMarcel Holtmann kfree_skb(hdev->reassembly[i]); 1737ef222013SMarcel Holtmann 1738ab81cbf9SJohan Hedberg if (!test_bit(HCI_INIT, &hdev->flags) && 1739a8b2d5c2SJohan Hedberg !test_bit(HCI_SETUP, &hdev->dev_flags)) { 174009fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 1741744cf19eSJohan Hedberg mgmt_index_removed(hdev); 174209fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 174356e5cb86SJohan Hedberg } 1744ab81cbf9SJohan Hedberg 17452e58ef3eSJohan Hedberg /* mgmt_index_removed should take care of emptying the 17462e58ef3eSJohan Hedberg * pending list */ 17472e58ef3eSJohan Hedberg BUG_ON(!list_empty(&hdev->mgmt_pending)); 17482e58ef3eSJohan Hedberg 17491da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UNREG); 17501da177e4SLinus Torvalds 1751611b30f7SMarcel Holtmann if (hdev->rfkill) { 1752611b30f7SMarcel Holtmann rfkill_unregister(hdev->rfkill); 1753611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 1754611b30f7SMarcel Holtmann } 1755611b30f7SMarcel Holtmann 1756ce242970SDavid Herrmann hci_del_sysfs(hdev); 1757147e2d59SDave Young 1758db323f2fSGustavo F. Padovan cancel_delayed_work_sync(&hdev->adv_work); 1759c6f3c5f7SGustavo F. Padovan 1760f48fd9c8SMarcel Holtmann destroy_workqueue(hdev->workqueue); 1761f48fd9c8SMarcel Holtmann 176209fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 1763e2e0cacbSJohan Hedberg hci_blacklist_clear(hdev); 17642aeb9a1aSJohan Hedberg hci_uuids_clear(hdev); 176555ed8ca1SJohan Hedberg hci_link_keys_clear(hdev); 1766b899efafSVinicius Costa Gomes hci_smp_ltks_clear(hdev); 17672763eda6SSzymon Janc hci_remote_oob_data_clear(hdev); 176876c8686fSAndre Guedes hci_adv_entries_clear(hdev); 176909fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 1770e2e0cacbSJohan Hedberg 1771dc946bd8SDavid Herrmann hci_dev_put(hdev); 17721da177e4SLinus Torvalds } 17731da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_dev); 17741da177e4SLinus Torvalds 17751da177e4SLinus Torvalds /* Suspend HCI device */ 17761da177e4SLinus Torvalds int hci_suspend_dev(struct hci_dev *hdev) 17771da177e4SLinus Torvalds { 17781da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_SUSPEND); 17791da177e4SLinus Torvalds return 0; 17801da177e4SLinus Torvalds } 17811da177e4SLinus Torvalds EXPORT_SYMBOL(hci_suspend_dev); 17821da177e4SLinus Torvalds 17831da177e4SLinus Torvalds /* Resume HCI device */ 17841da177e4SLinus Torvalds int hci_resume_dev(struct hci_dev *hdev) 17851da177e4SLinus Torvalds { 17861da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_RESUME); 17871da177e4SLinus Torvalds return 0; 17881da177e4SLinus Torvalds } 17891da177e4SLinus Torvalds EXPORT_SYMBOL(hci_resume_dev); 17901da177e4SLinus Torvalds 179176bca880SMarcel Holtmann /* Receive frame from HCI drivers */ 179276bca880SMarcel Holtmann int hci_recv_frame(struct sk_buff *skb) 179376bca880SMarcel Holtmann { 179476bca880SMarcel Holtmann struct hci_dev *hdev = (struct hci_dev *) skb->dev; 179576bca880SMarcel Holtmann if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 179676bca880SMarcel Holtmann && !test_bit(HCI_INIT, &hdev->flags))) { 179776bca880SMarcel Holtmann kfree_skb(skb); 179876bca880SMarcel Holtmann return -ENXIO; 179976bca880SMarcel Holtmann } 180076bca880SMarcel Holtmann 180176bca880SMarcel Holtmann /* Incomming skb */ 180276bca880SMarcel Holtmann bt_cb(skb)->incoming = 1; 180376bca880SMarcel Holtmann 180476bca880SMarcel Holtmann /* Time stamp */ 180576bca880SMarcel Holtmann __net_timestamp(skb); 180676bca880SMarcel Holtmann 180776bca880SMarcel Holtmann skb_queue_tail(&hdev->rx_q, skb); 1808b78752ccSMarcel Holtmann queue_work(hdev->workqueue, &hdev->rx_work); 1809c78ae283SMarcel Holtmann 181076bca880SMarcel Holtmann return 0; 181176bca880SMarcel Holtmann } 181276bca880SMarcel Holtmann EXPORT_SYMBOL(hci_recv_frame); 181376bca880SMarcel Holtmann 181433e882a5SSuraj Sumangala static int hci_reassembly(struct hci_dev *hdev, int type, void *data, 18151e429f38SGustavo F. Padovan int count, __u8 index) 181633e882a5SSuraj Sumangala { 181733e882a5SSuraj Sumangala int len = 0; 181833e882a5SSuraj Sumangala int hlen = 0; 181933e882a5SSuraj Sumangala int remain = count; 182033e882a5SSuraj Sumangala struct sk_buff *skb; 182133e882a5SSuraj Sumangala struct bt_skb_cb *scb; 182233e882a5SSuraj Sumangala 182333e882a5SSuraj Sumangala if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || 182433e882a5SSuraj Sumangala index >= NUM_REASSEMBLY) 182533e882a5SSuraj Sumangala return -EILSEQ; 182633e882a5SSuraj Sumangala 182733e882a5SSuraj Sumangala skb = hdev->reassembly[index]; 182833e882a5SSuraj Sumangala 182933e882a5SSuraj Sumangala if (!skb) { 183033e882a5SSuraj Sumangala switch (type) { 183133e882a5SSuraj Sumangala case HCI_ACLDATA_PKT: 183233e882a5SSuraj Sumangala len = HCI_MAX_FRAME_SIZE; 183333e882a5SSuraj Sumangala hlen = HCI_ACL_HDR_SIZE; 183433e882a5SSuraj Sumangala break; 183533e882a5SSuraj Sumangala case HCI_EVENT_PKT: 183633e882a5SSuraj Sumangala len = HCI_MAX_EVENT_SIZE; 183733e882a5SSuraj Sumangala hlen = HCI_EVENT_HDR_SIZE; 183833e882a5SSuraj Sumangala break; 183933e882a5SSuraj Sumangala case HCI_SCODATA_PKT: 184033e882a5SSuraj Sumangala len = HCI_MAX_SCO_SIZE; 184133e882a5SSuraj Sumangala hlen = HCI_SCO_HDR_SIZE; 184233e882a5SSuraj Sumangala break; 184333e882a5SSuraj Sumangala } 184433e882a5SSuraj Sumangala 18451e429f38SGustavo F. Padovan skb = bt_skb_alloc(len, GFP_ATOMIC); 184633e882a5SSuraj Sumangala if (!skb) 184733e882a5SSuraj Sumangala return -ENOMEM; 184833e882a5SSuraj Sumangala 184933e882a5SSuraj Sumangala scb = (void *) skb->cb; 185033e882a5SSuraj Sumangala scb->expect = hlen; 185133e882a5SSuraj Sumangala scb->pkt_type = type; 185233e882a5SSuraj Sumangala 185333e882a5SSuraj Sumangala skb->dev = (void *) hdev; 185433e882a5SSuraj Sumangala hdev->reassembly[index] = skb; 185533e882a5SSuraj Sumangala } 185633e882a5SSuraj Sumangala 185733e882a5SSuraj Sumangala while (count) { 185833e882a5SSuraj Sumangala scb = (void *) skb->cb; 185933e882a5SSuraj Sumangala len = min(scb->expect, (__u16)count); 186033e882a5SSuraj Sumangala 186133e882a5SSuraj Sumangala memcpy(skb_put(skb, len), data, len); 186233e882a5SSuraj Sumangala 186333e882a5SSuraj Sumangala count -= len; 186433e882a5SSuraj Sumangala data += len; 186533e882a5SSuraj Sumangala scb->expect -= len; 186633e882a5SSuraj Sumangala remain = count; 186733e882a5SSuraj Sumangala 186833e882a5SSuraj Sumangala switch (type) { 186933e882a5SSuraj Sumangala case HCI_EVENT_PKT: 187033e882a5SSuraj Sumangala if (skb->len == HCI_EVENT_HDR_SIZE) { 187133e882a5SSuraj Sumangala struct hci_event_hdr *h = hci_event_hdr(skb); 187233e882a5SSuraj Sumangala scb->expect = h->plen; 187333e882a5SSuraj Sumangala 187433e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 187533e882a5SSuraj Sumangala kfree_skb(skb); 187633e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 187733e882a5SSuraj Sumangala return -ENOMEM; 187833e882a5SSuraj Sumangala } 187933e882a5SSuraj Sumangala } 188033e882a5SSuraj Sumangala break; 188133e882a5SSuraj Sumangala 188233e882a5SSuraj Sumangala case HCI_ACLDATA_PKT: 188333e882a5SSuraj Sumangala if (skb->len == HCI_ACL_HDR_SIZE) { 188433e882a5SSuraj Sumangala struct hci_acl_hdr *h = hci_acl_hdr(skb); 188533e882a5SSuraj Sumangala scb->expect = __le16_to_cpu(h->dlen); 188633e882a5SSuraj Sumangala 188733e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 188833e882a5SSuraj Sumangala kfree_skb(skb); 188933e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 189033e882a5SSuraj Sumangala return -ENOMEM; 189133e882a5SSuraj Sumangala } 189233e882a5SSuraj Sumangala } 189333e882a5SSuraj Sumangala break; 189433e882a5SSuraj Sumangala 189533e882a5SSuraj Sumangala case HCI_SCODATA_PKT: 189633e882a5SSuraj Sumangala if (skb->len == HCI_SCO_HDR_SIZE) { 189733e882a5SSuraj Sumangala struct hci_sco_hdr *h = hci_sco_hdr(skb); 189833e882a5SSuraj Sumangala scb->expect = h->dlen; 189933e882a5SSuraj Sumangala 190033e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 190133e882a5SSuraj Sumangala kfree_skb(skb); 190233e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 190333e882a5SSuraj Sumangala return -ENOMEM; 190433e882a5SSuraj Sumangala } 190533e882a5SSuraj Sumangala } 190633e882a5SSuraj Sumangala break; 190733e882a5SSuraj Sumangala } 190833e882a5SSuraj Sumangala 190933e882a5SSuraj Sumangala if (scb->expect == 0) { 191033e882a5SSuraj Sumangala /* Complete frame */ 191133e882a5SSuraj Sumangala 191233e882a5SSuraj Sumangala bt_cb(skb)->pkt_type = type; 191333e882a5SSuraj Sumangala hci_recv_frame(skb); 191433e882a5SSuraj Sumangala 191533e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 191633e882a5SSuraj Sumangala return remain; 191733e882a5SSuraj Sumangala } 191833e882a5SSuraj Sumangala } 191933e882a5SSuraj Sumangala 192033e882a5SSuraj Sumangala return remain; 192133e882a5SSuraj Sumangala } 192233e882a5SSuraj Sumangala 1923ef222013SMarcel Holtmann int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 1924ef222013SMarcel Holtmann { 1925f39a3c06SSuraj Sumangala int rem = 0; 1926f39a3c06SSuraj Sumangala 1927ef222013SMarcel Holtmann if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) 1928ef222013SMarcel Holtmann return -EILSEQ; 1929ef222013SMarcel Holtmann 1930da5f6c37SGustavo F. Padovan while (count) { 19311e429f38SGustavo F. Padovan rem = hci_reassembly(hdev, type, data, count, type - 1); 1932f39a3c06SSuraj Sumangala if (rem < 0) 1933f39a3c06SSuraj Sumangala return rem; 1934ef222013SMarcel Holtmann 1935f39a3c06SSuraj Sumangala data += (count - rem); 1936f39a3c06SSuraj Sumangala count = rem; 1937f81c6224SJoe Perches } 1938ef222013SMarcel Holtmann 1939f39a3c06SSuraj Sumangala return rem; 1940ef222013SMarcel Holtmann } 1941ef222013SMarcel Holtmann EXPORT_SYMBOL(hci_recv_fragment); 1942ef222013SMarcel Holtmann 194399811510SSuraj Sumangala #define STREAM_REASSEMBLY 0 194499811510SSuraj Sumangala 194599811510SSuraj Sumangala int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) 194699811510SSuraj Sumangala { 194799811510SSuraj Sumangala int type; 194899811510SSuraj Sumangala int rem = 0; 194999811510SSuraj Sumangala 1950da5f6c37SGustavo F. Padovan while (count) { 195199811510SSuraj Sumangala struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; 195299811510SSuraj Sumangala 195399811510SSuraj Sumangala if (!skb) { 195499811510SSuraj Sumangala struct { char type; } *pkt; 195599811510SSuraj Sumangala 195699811510SSuraj Sumangala /* Start of the frame */ 195799811510SSuraj Sumangala pkt = data; 195899811510SSuraj Sumangala type = pkt->type; 195999811510SSuraj Sumangala 196099811510SSuraj Sumangala data++; 196199811510SSuraj Sumangala count--; 196299811510SSuraj Sumangala } else 196399811510SSuraj Sumangala type = bt_cb(skb)->pkt_type; 196499811510SSuraj Sumangala 19651e429f38SGustavo F. Padovan rem = hci_reassembly(hdev, type, data, count, 19661e429f38SGustavo F. Padovan STREAM_REASSEMBLY); 196799811510SSuraj Sumangala if (rem < 0) 196899811510SSuraj Sumangala return rem; 196999811510SSuraj Sumangala 197099811510SSuraj Sumangala data += (count - rem); 197199811510SSuraj Sumangala count = rem; 1972f81c6224SJoe Perches } 197399811510SSuraj Sumangala 197499811510SSuraj Sumangala return rem; 197599811510SSuraj Sumangala } 197699811510SSuraj Sumangala EXPORT_SYMBOL(hci_recv_stream_fragment); 197799811510SSuraj Sumangala 19781da177e4SLinus Torvalds /* ---- Interface to upper protocols ---- */ 19791da177e4SLinus Torvalds 19801da177e4SLinus Torvalds int hci_register_cb(struct hci_cb *cb) 19811da177e4SLinus Torvalds { 19821da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 19831da177e4SLinus Torvalds 1984f20d09d5SGustavo F. Padovan write_lock(&hci_cb_list_lock); 19851da177e4SLinus Torvalds list_add(&cb->list, &hci_cb_list); 1986f20d09d5SGustavo F. Padovan write_unlock(&hci_cb_list_lock); 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds return 0; 19891da177e4SLinus Torvalds } 19901da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_cb); 19911da177e4SLinus Torvalds 19921da177e4SLinus Torvalds int hci_unregister_cb(struct hci_cb *cb) 19931da177e4SLinus Torvalds { 19941da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 19951da177e4SLinus Torvalds 1996f20d09d5SGustavo F. Padovan write_lock(&hci_cb_list_lock); 19971da177e4SLinus Torvalds list_del(&cb->list); 1998f20d09d5SGustavo F. Padovan write_unlock(&hci_cb_list_lock); 19991da177e4SLinus Torvalds 20001da177e4SLinus Torvalds return 0; 20011da177e4SLinus Torvalds } 20021da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_cb); 20031da177e4SLinus Torvalds 20041da177e4SLinus Torvalds static int hci_send_frame(struct sk_buff *skb) 20051da177e4SLinus Torvalds { 20061da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) skb->dev; 20071da177e4SLinus Torvalds 20081da177e4SLinus Torvalds if (!hdev) { 20091da177e4SLinus Torvalds kfree_skb(skb); 20101da177e4SLinus Torvalds return -ENODEV; 20111da177e4SLinus Torvalds } 20121da177e4SLinus Torvalds 20130d48d939SMarcel Holtmann BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); 20141da177e4SLinus Torvalds 20151da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 20161da177e4SLinus Torvalds /* Time stamp */ 2017a61bbcf2SPatrick McHardy __net_timestamp(skb); 20181da177e4SLinus Torvalds 2019eec8d2bcSJohan Hedberg hci_send_to_sock(hdev, skb, NULL); 20201da177e4SLinus Torvalds } 20211da177e4SLinus Torvalds 20221da177e4SLinus Torvalds /* Get rid of skb owner, prior to sending to the driver. */ 20231da177e4SLinus Torvalds skb_orphan(skb); 20241da177e4SLinus Torvalds 20251da177e4SLinus Torvalds return hdev->send(skb); 20261da177e4SLinus Torvalds } 20271da177e4SLinus Torvalds 20281da177e4SLinus Torvalds /* Send HCI command */ 2029a9de9248SMarcel Holtmann int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) 20301da177e4SLinus Torvalds { 20311da177e4SLinus Torvalds int len = HCI_COMMAND_HDR_SIZE + plen; 20321da177e4SLinus Torvalds struct hci_command_hdr *hdr; 20331da177e4SLinus Torvalds struct sk_buff *skb; 20341da177e4SLinus Torvalds 2035a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); 20361da177e4SLinus Torvalds 20371da177e4SLinus Torvalds skb = bt_skb_alloc(len, GFP_ATOMIC); 20381da177e4SLinus Torvalds if (!skb) { 2039ef222013SMarcel Holtmann BT_ERR("%s no memory for command", hdev->name); 20401da177e4SLinus Torvalds return -ENOMEM; 20411da177e4SLinus Torvalds } 20421da177e4SLinus Torvalds 20431da177e4SLinus Torvalds hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); 2044a9de9248SMarcel Holtmann hdr->opcode = cpu_to_le16(opcode); 20451da177e4SLinus Torvalds hdr->plen = plen; 20461da177e4SLinus Torvalds 20471da177e4SLinus Torvalds if (plen) 20481da177e4SLinus Torvalds memcpy(skb_put(skb, plen), param, plen); 20491da177e4SLinus Torvalds 20501da177e4SLinus Torvalds BT_DBG("skb len %d", skb->len); 20511da177e4SLinus Torvalds 20520d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 20531da177e4SLinus Torvalds skb->dev = (void *) hdev; 2054c78ae283SMarcel Holtmann 2055a5040efaSJohan Hedberg if (test_bit(HCI_INIT, &hdev->flags)) 2056a5040efaSJohan Hedberg hdev->init_last_cmd = opcode; 2057a5040efaSJohan Hedberg 20581da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 2059c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 20601da177e4SLinus Torvalds 20611da177e4SLinus Torvalds return 0; 20621da177e4SLinus Torvalds } 20631da177e4SLinus Torvalds 20641da177e4SLinus Torvalds /* Get data from the previously sent command */ 2065a9de9248SMarcel Holtmann void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) 20661da177e4SLinus Torvalds { 20671da177e4SLinus Torvalds struct hci_command_hdr *hdr; 20681da177e4SLinus Torvalds 20691da177e4SLinus Torvalds if (!hdev->sent_cmd) 20701da177e4SLinus Torvalds return NULL; 20711da177e4SLinus Torvalds 20721da177e4SLinus Torvalds hdr = (void *) hdev->sent_cmd->data; 20731da177e4SLinus Torvalds 2074a9de9248SMarcel Holtmann if (hdr->opcode != cpu_to_le16(opcode)) 20751da177e4SLinus Torvalds return NULL; 20761da177e4SLinus Torvalds 2077a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x", hdev->name, opcode); 20781da177e4SLinus Torvalds 20791da177e4SLinus Torvalds return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; 20801da177e4SLinus Torvalds } 20811da177e4SLinus Torvalds 20821da177e4SLinus Torvalds /* Send ACL data */ 20831da177e4SLinus Torvalds static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) 20841da177e4SLinus Torvalds { 20851da177e4SLinus Torvalds struct hci_acl_hdr *hdr; 20861da177e4SLinus Torvalds int len = skb->len; 20871da177e4SLinus Torvalds 2088badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_ACL_HDR_SIZE); 2089badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 20909c70220bSArnaldo Carvalho de Melo hdr = (struct hci_acl_hdr *)skb_transport_header(skb); 2091aca3192cSYOSHIFUJI Hideaki hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); 2092aca3192cSYOSHIFUJI Hideaki hdr->dlen = cpu_to_le16(len); 20931da177e4SLinus Torvalds } 20941da177e4SLinus Torvalds 209573d80debSLuiz Augusto von Dentz static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, 209673d80debSLuiz Augusto von Dentz struct sk_buff *skb, __u16 flags) 20971da177e4SLinus Torvalds { 20981da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 20991da177e4SLinus Torvalds struct sk_buff *list; 21001da177e4SLinus Torvalds 210170f23020SAndrei Emeltchenko list = skb_shinfo(skb)->frag_list; 210270f23020SAndrei Emeltchenko if (!list) { 21031da177e4SLinus Torvalds /* Non fragmented */ 21041da177e4SLinus Torvalds BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); 21051da177e4SLinus Torvalds 210673d80debSLuiz Augusto von Dentz skb_queue_tail(queue, skb); 21071da177e4SLinus Torvalds } else { 21081da177e4SLinus Torvalds /* Fragmented */ 21091da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 21101da177e4SLinus Torvalds 21111da177e4SLinus Torvalds skb_shinfo(skb)->frag_list = NULL; 21121da177e4SLinus Torvalds 21131da177e4SLinus Torvalds /* Queue all fragments atomically */ 2114af3e6359SGustavo F. Padovan spin_lock(&queue->lock); 21151da177e4SLinus Torvalds 211673d80debSLuiz Augusto von Dentz __skb_queue_tail(queue, skb); 2117e702112fSAndrei Emeltchenko 2118e702112fSAndrei Emeltchenko flags &= ~ACL_START; 2119e702112fSAndrei Emeltchenko flags |= ACL_CONT; 21201da177e4SLinus Torvalds do { 21211da177e4SLinus Torvalds skb = list; list = list->next; 21221da177e4SLinus Torvalds 21231da177e4SLinus Torvalds skb->dev = (void *) hdev; 21240d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 2125e702112fSAndrei Emeltchenko hci_add_acl_hdr(skb, conn->handle, flags); 21261da177e4SLinus Torvalds 21271da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 21281da177e4SLinus Torvalds 212973d80debSLuiz Augusto von Dentz __skb_queue_tail(queue, skb); 21301da177e4SLinus Torvalds } while (list); 21311da177e4SLinus Torvalds 2132af3e6359SGustavo F. Padovan spin_unlock(&queue->lock); 21331da177e4SLinus Torvalds } 213473d80debSLuiz Augusto von Dentz } 213573d80debSLuiz Augusto von Dentz 213673d80debSLuiz Augusto von Dentz void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) 213773d80debSLuiz Augusto von Dentz { 213873d80debSLuiz Augusto von Dentz struct hci_conn *conn = chan->conn; 213973d80debSLuiz Augusto von Dentz struct hci_dev *hdev = conn->hdev; 214073d80debSLuiz Augusto von Dentz 214173d80debSLuiz Augusto von Dentz BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); 214273d80debSLuiz Augusto von Dentz 214373d80debSLuiz Augusto von Dentz skb->dev = (void *) hdev; 214473d80debSLuiz Augusto von Dentz bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 214573d80debSLuiz Augusto von Dentz hci_add_acl_hdr(skb, conn->handle, flags); 214673d80debSLuiz Augusto von Dentz 214773d80debSLuiz Augusto von Dentz hci_queue_acl(conn, &chan->data_q, skb, flags); 21481da177e4SLinus Torvalds 21493eff45eaSGustavo F. Padovan queue_work(hdev->workqueue, &hdev->tx_work); 21501da177e4SLinus Torvalds } 21511da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_acl); 21521da177e4SLinus Torvalds 21531da177e4SLinus Torvalds /* Send SCO data */ 21540d861d8bSGustavo F. Padovan void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) 21551da177e4SLinus Torvalds { 21561da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 21571da177e4SLinus Torvalds struct hci_sco_hdr hdr; 21581da177e4SLinus Torvalds 21591da177e4SLinus Torvalds BT_DBG("%s len %d", hdev->name, skb->len); 21601da177e4SLinus Torvalds 2161aca3192cSYOSHIFUJI Hideaki hdr.handle = cpu_to_le16(conn->handle); 21621da177e4SLinus Torvalds hdr.dlen = skb->len; 21631da177e4SLinus Torvalds 2164badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_SCO_HDR_SIZE); 2165badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 21669c70220bSArnaldo Carvalho de Melo memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); 21671da177e4SLinus Torvalds 21681da177e4SLinus Torvalds skb->dev = (void *) hdev; 21690d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 2170c78ae283SMarcel Holtmann 21711da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 21723eff45eaSGustavo F. Padovan queue_work(hdev->workqueue, &hdev->tx_work); 21731da177e4SLinus Torvalds } 21741da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_sco); 21751da177e4SLinus Torvalds 21761da177e4SLinus Torvalds /* ---- HCI TX task (outgoing data) ---- */ 21771da177e4SLinus Torvalds 21781da177e4SLinus Torvalds /* HCI Connection scheduler */ 21791da177e4SLinus Torvalds static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) 21801da177e4SLinus Torvalds { 21811da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 21828035ded4SLuiz Augusto von Dentz struct hci_conn *conn = NULL, *c; 21831da177e4SLinus Torvalds int num = 0, min = ~0; 21841da177e4SLinus Torvalds 21851da177e4SLinus Torvalds /* We don't have to lock device here. Connections are always 21861da177e4SLinus Torvalds * added and removed with TX task disabled. */ 2187bf4c6325SGustavo F. Padovan 2188bf4c6325SGustavo F. Padovan rcu_read_lock(); 2189bf4c6325SGustavo F. Padovan 2190bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(c, &h->list, list) { 2191769be974SMarcel Holtmann if (c->type != type || skb_queue_empty(&c->data_q)) 21921da177e4SLinus Torvalds continue; 2193769be974SMarcel Holtmann 2194769be974SMarcel Holtmann if (c->state != BT_CONNECTED && c->state != BT_CONFIG) 2195769be974SMarcel Holtmann continue; 2196769be974SMarcel Holtmann 21971da177e4SLinus Torvalds num++; 21981da177e4SLinus Torvalds 21991da177e4SLinus Torvalds if (c->sent < min) { 22001da177e4SLinus Torvalds min = c->sent; 22011da177e4SLinus Torvalds conn = c; 22021da177e4SLinus Torvalds } 220352087a79SLuiz Augusto von Dentz 220452087a79SLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == num) 220552087a79SLuiz Augusto von Dentz break; 22061da177e4SLinus Torvalds } 22071da177e4SLinus Torvalds 2208bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2209bf4c6325SGustavo F. Padovan 22101da177e4SLinus Torvalds if (conn) { 22116ed58ec5SVille Tervo int cnt, q; 22126ed58ec5SVille Tervo 22136ed58ec5SVille Tervo switch (conn->type) { 22146ed58ec5SVille Tervo case ACL_LINK: 22156ed58ec5SVille Tervo cnt = hdev->acl_cnt; 22166ed58ec5SVille Tervo break; 22176ed58ec5SVille Tervo case SCO_LINK: 22186ed58ec5SVille Tervo case ESCO_LINK: 22196ed58ec5SVille Tervo cnt = hdev->sco_cnt; 22206ed58ec5SVille Tervo break; 22216ed58ec5SVille Tervo case LE_LINK: 22226ed58ec5SVille Tervo cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; 22236ed58ec5SVille Tervo break; 22246ed58ec5SVille Tervo default: 22256ed58ec5SVille Tervo cnt = 0; 22266ed58ec5SVille Tervo BT_ERR("Unknown link type"); 22276ed58ec5SVille Tervo } 22286ed58ec5SVille Tervo 22296ed58ec5SVille Tervo q = cnt / num; 22301da177e4SLinus Torvalds *quote = q ? q : 1; 22311da177e4SLinus Torvalds } else 22321da177e4SLinus Torvalds *quote = 0; 22331da177e4SLinus Torvalds 22341da177e4SLinus Torvalds BT_DBG("conn %p quote %d", conn, *quote); 22351da177e4SLinus Torvalds return conn; 22361da177e4SLinus Torvalds } 22371da177e4SLinus Torvalds 2238bae1f5d9SVille Tervo static inline void hci_link_tx_to(struct hci_dev *hdev, __u8 type) 22391da177e4SLinus Torvalds { 22401da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 22411da177e4SLinus Torvalds struct hci_conn *c; 22421da177e4SLinus Torvalds 2243bae1f5d9SVille Tervo BT_ERR("%s link tx timeout", hdev->name); 22441da177e4SLinus Torvalds 2245bf4c6325SGustavo F. Padovan rcu_read_lock(); 2246bf4c6325SGustavo F. Padovan 22471da177e4SLinus Torvalds /* Kill stalled connections */ 2248bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(c, &h->list, list) { 2249bae1f5d9SVille Tervo if (c->type == type && c->sent) { 2250bae1f5d9SVille Tervo BT_ERR("%s killing stalled connection %s", 22511da177e4SLinus Torvalds hdev->name, batostr(&c->dst)); 22521da177e4SLinus Torvalds hci_acl_disconn(c, 0x13); 22531da177e4SLinus Torvalds } 22541da177e4SLinus Torvalds } 2255bf4c6325SGustavo F. Padovan 2256bf4c6325SGustavo F. Padovan rcu_read_unlock(); 22571da177e4SLinus Torvalds } 22581da177e4SLinus Torvalds 225973d80debSLuiz Augusto von Dentz static inline struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, 226073d80debSLuiz Augusto von Dentz int *quote) 226173d80debSLuiz Augusto von Dentz { 226273d80debSLuiz Augusto von Dentz struct hci_conn_hash *h = &hdev->conn_hash; 226373d80debSLuiz Augusto von Dentz struct hci_chan *chan = NULL; 226473d80debSLuiz Augusto von Dentz int num = 0, min = ~0, cur_prio = 0; 226573d80debSLuiz Augusto von Dentz struct hci_conn *conn; 226673d80debSLuiz Augusto von Dentz int cnt, q, conn_num = 0; 226773d80debSLuiz Augusto von Dentz 226873d80debSLuiz Augusto von Dentz BT_DBG("%s", hdev->name); 226973d80debSLuiz Augusto von Dentz 2270bf4c6325SGustavo F. Padovan rcu_read_lock(); 2271bf4c6325SGustavo F. Padovan 2272bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(conn, &h->list, list) { 227373d80debSLuiz Augusto von Dentz struct hci_chan *tmp; 227473d80debSLuiz Augusto von Dentz 227573d80debSLuiz Augusto von Dentz if (conn->type != type) 227673d80debSLuiz Augusto von Dentz continue; 227773d80debSLuiz Augusto von Dentz 227873d80debSLuiz Augusto von Dentz if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) 227973d80debSLuiz Augusto von Dentz continue; 228073d80debSLuiz Augusto von Dentz 228173d80debSLuiz Augusto von Dentz conn_num++; 228273d80debSLuiz Augusto von Dentz 22838192edefSGustavo F. Padovan list_for_each_entry_rcu(tmp, &conn->chan_list, list) { 228473d80debSLuiz Augusto von Dentz struct sk_buff *skb; 228573d80debSLuiz Augusto von Dentz 228673d80debSLuiz Augusto von Dentz if (skb_queue_empty(&tmp->data_q)) 228773d80debSLuiz Augusto von Dentz continue; 228873d80debSLuiz Augusto von Dentz 228973d80debSLuiz Augusto von Dentz skb = skb_peek(&tmp->data_q); 229073d80debSLuiz Augusto von Dentz if (skb->priority < cur_prio) 229173d80debSLuiz Augusto von Dentz continue; 229273d80debSLuiz Augusto von Dentz 229373d80debSLuiz Augusto von Dentz if (skb->priority > cur_prio) { 229473d80debSLuiz Augusto von Dentz num = 0; 229573d80debSLuiz Augusto von Dentz min = ~0; 229673d80debSLuiz Augusto von Dentz cur_prio = skb->priority; 229773d80debSLuiz Augusto von Dentz } 229873d80debSLuiz Augusto von Dentz 229973d80debSLuiz Augusto von Dentz num++; 230073d80debSLuiz Augusto von Dentz 230173d80debSLuiz Augusto von Dentz if (conn->sent < min) { 230273d80debSLuiz Augusto von Dentz min = conn->sent; 230373d80debSLuiz Augusto von Dentz chan = tmp; 230473d80debSLuiz Augusto von Dentz } 230573d80debSLuiz Augusto von Dentz } 230673d80debSLuiz Augusto von Dentz 230773d80debSLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == conn_num) 230873d80debSLuiz Augusto von Dentz break; 230973d80debSLuiz Augusto von Dentz } 231073d80debSLuiz Augusto von Dentz 2311bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2312bf4c6325SGustavo F. Padovan 231373d80debSLuiz Augusto von Dentz if (!chan) 231473d80debSLuiz Augusto von Dentz return NULL; 231573d80debSLuiz Augusto von Dentz 231673d80debSLuiz Augusto von Dentz switch (chan->conn->type) { 231773d80debSLuiz Augusto von Dentz case ACL_LINK: 231873d80debSLuiz Augusto von Dentz cnt = hdev->acl_cnt; 231973d80debSLuiz Augusto von Dentz break; 232073d80debSLuiz Augusto von Dentz case SCO_LINK: 232173d80debSLuiz Augusto von Dentz case ESCO_LINK: 232273d80debSLuiz Augusto von Dentz cnt = hdev->sco_cnt; 232373d80debSLuiz Augusto von Dentz break; 232473d80debSLuiz Augusto von Dentz case LE_LINK: 232573d80debSLuiz Augusto von Dentz cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; 232673d80debSLuiz Augusto von Dentz break; 232773d80debSLuiz Augusto von Dentz default: 232873d80debSLuiz Augusto von Dentz cnt = 0; 232973d80debSLuiz Augusto von Dentz BT_ERR("Unknown link type"); 233073d80debSLuiz Augusto von Dentz } 233173d80debSLuiz Augusto von Dentz 233273d80debSLuiz Augusto von Dentz q = cnt / num; 233373d80debSLuiz Augusto von Dentz *quote = q ? q : 1; 233473d80debSLuiz Augusto von Dentz BT_DBG("chan %p quote %d", chan, *quote); 233573d80debSLuiz Augusto von Dentz return chan; 233673d80debSLuiz Augusto von Dentz } 233773d80debSLuiz Augusto von Dentz 233802b20f0bSLuiz Augusto von Dentz static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) 233902b20f0bSLuiz Augusto von Dentz { 234002b20f0bSLuiz Augusto von Dentz struct hci_conn_hash *h = &hdev->conn_hash; 234102b20f0bSLuiz Augusto von Dentz struct hci_conn *conn; 234202b20f0bSLuiz Augusto von Dentz int num = 0; 234302b20f0bSLuiz Augusto von Dentz 234402b20f0bSLuiz Augusto von Dentz BT_DBG("%s", hdev->name); 234502b20f0bSLuiz Augusto von Dentz 2346bf4c6325SGustavo F. Padovan rcu_read_lock(); 2347bf4c6325SGustavo F. Padovan 2348bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(conn, &h->list, list) { 234902b20f0bSLuiz Augusto von Dentz struct hci_chan *chan; 235002b20f0bSLuiz Augusto von Dentz 235102b20f0bSLuiz Augusto von Dentz if (conn->type != type) 235202b20f0bSLuiz Augusto von Dentz continue; 235302b20f0bSLuiz Augusto von Dentz 235402b20f0bSLuiz Augusto von Dentz if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) 235502b20f0bSLuiz Augusto von Dentz continue; 235602b20f0bSLuiz Augusto von Dentz 235702b20f0bSLuiz Augusto von Dentz num++; 235802b20f0bSLuiz Augusto von Dentz 23598192edefSGustavo F. Padovan list_for_each_entry_rcu(chan, &conn->chan_list, list) { 236002b20f0bSLuiz Augusto von Dentz struct sk_buff *skb; 236102b20f0bSLuiz Augusto von Dentz 236202b20f0bSLuiz Augusto von Dentz if (chan->sent) { 236302b20f0bSLuiz Augusto von Dentz chan->sent = 0; 236402b20f0bSLuiz Augusto von Dentz continue; 236502b20f0bSLuiz Augusto von Dentz } 236602b20f0bSLuiz Augusto von Dentz 236702b20f0bSLuiz Augusto von Dentz if (skb_queue_empty(&chan->data_q)) 236802b20f0bSLuiz Augusto von Dentz continue; 236902b20f0bSLuiz Augusto von Dentz 237002b20f0bSLuiz Augusto von Dentz skb = skb_peek(&chan->data_q); 237102b20f0bSLuiz Augusto von Dentz if (skb->priority >= HCI_PRIO_MAX - 1) 237202b20f0bSLuiz Augusto von Dentz continue; 237302b20f0bSLuiz Augusto von Dentz 237402b20f0bSLuiz Augusto von Dentz skb->priority = HCI_PRIO_MAX - 1; 237502b20f0bSLuiz Augusto von Dentz 237602b20f0bSLuiz Augusto von Dentz BT_DBG("chan %p skb %p promoted to %d", chan, skb, 237702b20f0bSLuiz Augusto von Dentz skb->priority); 237802b20f0bSLuiz Augusto von Dentz } 237902b20f0bSLuiz Augusto von Dentz 238002b20f0bSLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == num) 238102b20f0bSLuiz Augusto von Dentz break; 238202b20f0bSLuiz Augusto von Dentz } 2383bf4c6325SGustavo F. Padovan 2384bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2385bf4c6325SGustavo F. Padovan 238602b20f0bSLuiz Augusto von Dentz } 238702b20f0bSLuiz Augusto von Dentz 2388b71d385aSAndrei Emeltchenko static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) 2389b71d385aSAndrei Emeltchenko { 2390b71d385aSAndrei Emeltchenko /* Calculate count of blocks used by this packet */ 2391b71d385aSAndrei Emeltchenko return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); 2392b71d385aSAndrei Emeltchenko } 2393b71d385aSAndrei Emeltchenko 239463d2bc1bSAndrei Emeltchenko static inline void __check_timeout(struct hci_dev *hdev, unsigned int cnt) 23951da177e4SLinus Torvalds { 23961da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 23971da177e4SLinus Torvalds /* ACL tx timeout must be longer than maximum 23981da177e4SLinus Torvalds * link supervision timeout (40.9 seconds) */ 239963d2bc1bSAndrei Emeltchenko if (!cnt && time_after(jiffies, hdev->acl_last_tx + 2400cc48dc0aSAndrei Emeltchenko msecs_to_jiffies(HCI_ACL_TX_TIMEOUT))) 2401bae1f5d9SVille Tervo hci_link_tx_to(hdev, ACL_LINK); 24021da177e4SLinus Torvalds } 240363d2bc1bSAndrei Emeltchenko } 24041da177e4SLinus Torvalds 240563d2bc1bSAndrei Emeltchenko static inline void hci_sched_acl_pkt(struct hci_dev *hdev) 240663d2bc1bSAndrei Emeltchenko { 240763d2bc1bSAndrei Emeltchenko unsigned int cnt = hdev->acl_cnt; 240863d2bc1bSAndrei Emeltchenko struct hci_chan *chan; 240963d2bc1bSAndrei Emeltchenko struct sk_buff *skb; 241063d2bc1bSAndrei Emeltchenko int quote; 241163d2bc1bSAndrei Emeltchenko 241263d2bc1bSAndrei Emeltchenko __check_timeout(hdev, cnt); 241304837f64SMarcel Holtmann 241473d80debSLuiz Augusto von Dentz while (hdev->acl_cnt && 241573d80debSLuiz Augusto von Dentz (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { 2416ec1cce24SLuiz Augusto von Dentz u32 priority = (skb_peek(&chan->data_q))->priority; 2417ec1cce24SLuiz Augusto von Dentz while (quote-- && (skb = skb_peek(&chan->data_q))) { 241873d80debSLuiz Augusto von Dentz BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 241973d80debSLuiz Augusto von Dentz skb->len, skb->priority); 242073d80debSLuiz Augusto von Dentz 2421ec1cce24SLuiz Augusto von Dentz /* Stop if priority has changed */ 2422ec1cce24SLuiz Augusto von Dentz if (skb->priority < priority) 2423ec1cce24SLuiz Augusto von Dentz break; 2424ec1cce24SLuiz Augusto von Dentz 2425ec1cce24SLuiz Augusto von Dentz skb = skb_dequeue(&chan->data_q); 2426ec1cce24SLuiz Augusto von Dentz 242773d80debSLuiz Augusto von Dentz hci_conn_enter_active_mode(chan->conn, 242873d80debSLuiz Augusto von Dentz bt_cb(skb)->force_active); 242904837f64SMarcel Holtmann 24301da177e4SLinus Torvalds hci_send_frame(skb); 24311da177e4SLinus Torvalds hdev->acl_last_tx = jiffies; 24321da177e4SLinus Torvalds 24331da177e4SLinus Torvalds hdev->acl_cnt--; 243473d80debSLuiz Augusto von Dentz chan->sent++; 243573d80debSLuiz Augusto von Dentz chan->conn->sent++; 24361da177e4SLinus Torvalds } 24371da177e4SLinus Torvalds } 243802b20f0bSLuiz Augusto von Dentz 243902b20f0bSLuiz Augusto von Dentz if (cnt != hdev->acl_cnt) 244002b20f0bSLuiz Augusto von Dentz hci_prio_recalculate(hdev, ACL_LINK); 24411da177e4SLinus Torvalds } 24421da177e4SLinus Torvalds 2443b71d385aSAndrei Emeltchenko static inline void hci_sched_acl_blk(struct hci_dev *hdev) 2444b71d385aSAndrei Emeltchenko { 244563d2bc1bSAndrei Emeltchenko unsigned int cnt = hdev->block_cnt; 2446b71d385aSAndrei Emeltchenko struct hci_chan *chan; 2447b71d385aSAndrei Emeltchenko struct sk_buff *skb; 2448b71d385aSAndrei Emeltchenko int quote; 2449b71d385aSAndrei Emeltchenko 245063d2bc1bSAndrei Emeltchenko __check_timeout(hdev, cnt); 2451b71d385aSAndrei Emeltchenko 2452b71d385aSAndrei Emeltchenko while (hdev->block_cnt > 0 && 2453b71d385aSAndrei Emeltchenko (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { 2454b71d385aSAndrei Emeltchenko u32 priority = (skb_peek(&chan->data_q))->priority; 2455b71d385aSAndrei Emeltchenko while (quote > 0 && (skb = skb_peek(&chan->data_q))) { 2456b71d385aSAndrei Emeltchenko int blocks; 2457b71d385aSAndrei Emeltchenko 2458b71d385aSAndrei Emeltchenko BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 2459b71d385aSAndrei Emeltchenko skb->len, skb->priority); 2460b71d385aSAndrei Emeltchenko 2461b71d385aSAndrei Emeltchenko /* Stop if priority has changed */ 2462b71d385aSAndrei Emeltchenko if (skb->priority < priority) 2463b71d385aSAndrei Emeltchenko break; 2464b71d385aSAndrei Emeltchenko 2465b71d385aSAndrei Emeltchenko skb = skb_dequeue(&chan->data_q); 2466b71d385aSAndrei Emeltchenko 2467b71d385aSAndrei Emeltchenko blocks = __get_blocks(hdev, skb); 2468b71d385aSAndrei Emeltchenko if (blocks > hdev->block_cnt) 2469b71d385aSAndrei Emeltchenko return; 2470b71d385aSAndrei Emeltchenko 2471b71d385aSAndrei Emeltchenko hci_conn_enter_active_mode(chan->conn, 2472b71d385aSAndrei Emeltchenko bt_cb(skb)->force_active); 2473b71d385aSAndrei Emeltchenko 2474b71d385aSAndrei Emeltchenko hci_send_frame(skb); 2475b71d385aSAndrei Emeltchenko hdev->acl_last_tx = jiffies; 2476b71d385aSAndrei Emeltchenko 2477b71d385aSAndrei Emeltchenko hdev->block_cnt -= blocks; 2478b71d385aSAndrei Emeltchenko quote -= blocks; 2479b71d385aSAndrei Emeltchenko 2480b71d385aSAndrei Emeltchenko chan->sent += blocks; 2481b71d385aSAndrei Emeltchenko chan->conn->sent += blocks; 2482b71d385aSAndrei Emeltchenko } 2483b71d385aSAndrei Emeltchenko } 2484b71d385aSAndrei Emeltchenko 2485b71d385aSAndrei Emeltchenko if (cnt != hdev->block_cnt) 2486b71d385aSAndrei Emeltchenko hci_prio_recalculate(hdev, ACL_LINK); 2487b71d385aSAndrei Emeltchenko } 2488b71d385aSAndrei Emeltchenko 2489b71d385aSAndrei Emeltchenko static inline void hci_sched_acl(struct hci_dev *hdev) 2490b71d385aSAndrei Emeltchenko { 2491b71d385aSAndrei Emeltchenko BT_DBG("%s", hdev->name); 2492b71d385aSAndrei Emeltchenko 2493b71d385aSAndrei Emeltchenko if (!hci_conn_num(hdev, ACL_LINK)) 2494b71d385aSAndrei Emeltchenko return; 2495b71d385aSAndrei Emeltchenko 2496b71d385aSAndrei Emeltchenko switch (hdev->flow_ctl_mode) { 2497b71d385aSAndrei Emeltchenko case HCI_FLOW_CTL_MODE_PACKET_BASED: 2498b71d385aSAndrei Emeltchenko hci_sched_acl_pkt(hdev); 2499b71d385aSAndrei Emeltchenko break; 2500b71d385aSAndrei Emeltchenko 2501b71d385aSAndrei Emeltchenko case HCI_FLOW_CTL_MODE_BLOCK_BASED: 2502b71d385aSAndrei Emeltchenko hci_sched_acl_blk(hdev); 2503b71d385aSAndrei Emeltchenko break; 2504b71d385aSAndrei Emeltchenko } 2505b71d385aSAndrei Emeltchenko } 2506b71d385aSAndrei Emeltchenko 25071da177e4SLinus Torvalds /* Schedule SCO */ 25081da177e4SLinus Torvalds static inline void hci_sched_sco(struct hci_dev *hdev) 25091da177e4SLinus Torvalds { 25101da177e4SLinus Torvalds struct hci_conn *conn; 25111da177e4SLinus Torvalds struct sk_buff *skb; 25121da177e4SLinus Torvalds int quote; 25131da177e4SLinus Torvalds 25141da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 25151da177e4SLinus Torvalds 251652087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, SCO_LINK)) 251752087a79SLuiz Augusto von Dentz return; 251852087a79SLuiz Augusto von Dentz 25191da177e4SLinus Torvalds while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { 25201da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 25211da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 25221da177e4SLinus Torvalds hci_send_frame(skb); 25231da177e4SLinus Torvalds 25241da177e4SLinus Torvalds conn->sent++; 25251da177e4SLinus Torvalds if (conn->sent == ~0) 25261da177e4SLinus Torvalds conn->sent = 0; 25271da177e4SLinus Torvalds } 25281da177e4SLinus Torvalds } 25291da177e4SLinus Torvalds } 25301da177e4SLinus Torvalds 2531b6a0dc82SMarcel Holtmann static inline void hci_sched_esco(struct hci_dev *hdev) 2532b6a0dc82SMarcel Holtmann { 2533b6a0dc82SMarcel Holtmann struct hci_conn *conn; 2534b6a0dc82SMarcel Holtmann struct sk_buff *skb; 2535b6a0dc82SMarcel Holtmann int quote; 2536b6a0dc82SMarcel Holtmann 2537b6a0dc82SMarcel Holtmann BT_DBG("%s", hdev->name); 2538b6a0dc82SMarcel Holtmann 253952087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, ESCO_LINK)) 254052087a79SLuiz Augusto von Dentz return; 254152087a79SLuiz Augusto von Dentz 2542b6a0dc82SMarcel Holtmann while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { 2543b6a0dc82SMarcel Holtmann while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 2544b6a0dc82SMarcel Holtmann BT_DBG("skb %p len %d", skb, skb->len); 2545b6a0dc82SMarcel Holtmann hci_send_frame(skb); 2546b6a0dc82SMarcel Holtmann 2547b6a0dc82SMarcel Holtmann conn->sent++; 2548b6a0dc82SMarcel Holtmann if (conn->sent == ~0) 2549b6a0dc82SMarcel Holtmann conn->sent = 0; 2550b6a0dc82SMarcel Holtmann } 2551b6a0dc82SMarcel Holtmann } 2552b6a0dc82SMarcel Holtmann } 2553b6a0dc82SMarcel Holtmann 25546ed58ec5SVille Tervo static inline void hci_sched_le(struct hci_dev *hdev) 25556ed58ec5SVille Tervo { 255673d80debSLuiz Augusto von Dentz struct hci_chan *chan; 25576ed58ec5SVille Tervo struct sk_buff *skb; 255802b20f0bSLuiz Augusto von Dentz int quote, cnt, tmp; 25596ed58ec5SVille Tervo 25606ed58ec5SVille Tervo BT_DBG("%s", hdev->name); 25616ed58ec5SVille Tervo 256252087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, LE_LINK)) 256352087a79SLuiz Augusto von Dentz return; 256452087a79SLuiz Augusto von Dentz 25656ed58ec5SVille Tervo if (!test_bit(HCI_RAW, &hdev->flags)) { 25666ed58ec5SVille Tervo /* LE tx timeout must be longer than maximum 25676ed58ec5SVille Tervo * link supervision timeout (40.9 seconds) */ 2568bae1f5d9SVille Tervo if (!hdev->le_cnt && hdev->le_pkts && 25696ed58ec5SVille Tervo time_after(jiffies, hdev->le_last_tx + HZ * 45)) 2570bae1f5d9SVille Tervo hci_link_tx_to(hdev, LE_LINK); 25716ed58ec5SVille Tervo } 25726ed58ec5SVille Tervo 25736ed58ec5SVille Tervo cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; 257402b20f0bSLuiz Augusto von Dentz tmp = cnt; 257573d80debSLuiz Augusto von Dentz while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { 2576ec1cce24SLuiz Augusto von Dentz u32 priority = (skb_peek(&chan->data_q))->priority; 2577ec1cce24SLuiz Augusto von Dentz while (quote-- && (skb = skb_peek(&chan->data_q))) { 257873d80debSLuiz Augusto von Dentz BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 257973d80debSLuiz Augusto von Dentz skb->len, skb->priority); 25806ed58ec5SVille Tervo 2581ec1cce24SLuiz Augusto von Dentz /* Stop if priority has changed */ 2582ec1cce24SLuiz Augusto von Dentz if (skb->priority < priority) 2583ec1cce24SLuiz Augusto von Dentz break; 2584ec1cce24SLuiz Augusto von Dentz 2585ec1cce24SLuiz Augusto von Dentz skb = skb_dequeue(&chan->data_q); 2586ec1cce24SLuiz Augusto von Dentz 25876ed58ec5SVille Tervo hci_send_frame(skb); 25886ed58ec5SVille Tervo hdev->le_last_tx = jiffies; 25896ed58ec5SVille Tervo 25906ed58ec5SVille Tervo cnt--; 259173d80debSLuiz Augusto von Dentz chan->sent++; 259273d80debSLuiz Augusto von Dentz chan->conn->sent++; 25936ed58ec5SVille Tervo } 25946ed58ec5SVille Tervo } 259573d80debSLuiz Augusto von Dentz 25966ed58ec5SVille Tervo if (hdev->le_pkts) 25976ed58ec5SVille Tervo hdev->le_cnt = cnt; 25986ed58ec5SVille Tervo else 25996ed58ec5SVille Tervo hdev->acl_cnt = cnt; 260002b20f0bSLuiz Augusto von Dentz 260102b20f0bSLuiz Augusto von Dentz if (cnt != tmp) 260202b20f0bSLuiz Augusto von Dentz hci_prio_recalculate(hdev, LE_LINK); 26036ed58ec5SVille Tervo } 26046ed58ec5SVille Tervo 26053eff45eaSGustavo F. Padovan static void hci_tx_work(struct work_struct *work) 26061da177e4SLinus Torvalds { 26073eff45eaSGustavo F. Padovan struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); 26081da177e4SLinus Torvalds struct sk_buff *skb; 26091da177e4SLinus Torvalds 26106ed58ec5SVille Tervo BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, 26116ed58ec5SVille Tervo hdev->sco_cnt, hdev->le_cnt); 26121da177e4SLinus Torvalds 26131da177e4SLinus Torvalds /* Schedule queues and send stuff to HCI driver */ 26141da177e4SLinus Torvalds 26151da177e4SLinus Torvalds hci_sched_acl(hdev); 26161da177e4SLinus Torvalds 26171da177e4SLinus Torvalds hci_sched_sco(hdev); 26181da177e4SLinus Torvalds 2619b6a0dc82SMarcel Holtmann hci_sched_esco(hdev); 2620b6a0dc82SMarcel Holtmann 26216ed58ec5SVille Tervo hci_sched_le(hdev); 26226ed58ec5SVille Tervo 26231da177e4SLinus Torvalds /* Send next queued raw (unknown type) packet */ 26241da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->raw_q))) 26251da177e4SLinus Torvalds hci_send_frame(skb); 26261da177e4SLinus Torvalds } 26271da177e4SLinus Torvalds 262825985edcSLucas De Marchi /* ----- HCI RX task (incoming data processing) ----- */ 26291da177e4SLinus Torvalds 26301da177e4SLinus Torvalds /* ACL data packet */ 26311da177e4SLinus Torvalds static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) 26321da177e4SLinus Torvalds { 26331da177e4SLinus Torvalds struct hci_acl_hdr *hdr = (void *) skb->data; 26341da177e4SLinus Torvalds struct hci_conn *conn; 26351da177e4SLinus Torvalds __u16 handle, flags; 26361da177e4SLinus Torvalds 26371da177e4SLinus Torvalds skb_pull(skb, HCI_ACL_HDR_SIZE); 26381da177e4SLinus Torvalds 26391da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 26401da177e4SLinus Torvalds flags = hci_flags(handle); 26411da177e4SLinus Torvalds handle = hci_handle(handle); 26421da177e4SLinus Torvalds 26431da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); 26441da177e4SLinus Torvalds 26451da177e4SLinus Torvalds hdev->stat.acl_rx++; 26461da177e4SLinus Torvalds 26471da177e4SLinus Torvalds hci_dev_lock(hdev); 26481da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 26491da177e4SLinus Torvalds hci_dev_unlock(hdev); 26501da177e4SLinus Torvalds 26511da177e4SLinus Torvalds if (conn) { 265265983fc7SMat Martineau hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); 265304837f64SMarcel Holtmann 26541da177e4SLinus Torvalds /* Send to upper protocol */ 2655686ebf28SUlisses Furquim l2cap_recv_acldata(conn, skb, flags); 26561da177e4SLinus Torvalds return; 26571da177e4SLinus Torvalds } else { 26581da177e4SLinus Torvalds BT_ERR("%s ACL packet for unknown connection handle %d", 26591da177e4SLinus Torvalds hdev->name, handle); 26601da177e4SLinus Torvalds } 26611da177e4SLinus Torvalds 26621da177e4SLinus Torvalds kfree_skb(skb); 26631da177e4SLinus Torvalds } 26641da177e4SLinus Torvalds 26651da177e4SLinus Torvalds /* SCO data packet */ 26661da177e4SLinus Torvalds static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) 26671da177e4SLinus Torvalds { 26681da177e4SLinus Torvalds struct hci_sco_hdr *hdr = (void *) skb->data; 26691da177e4SLinus Torvalds struct hci_conn *conn; 26701da177e4SLinus Torvalds __u16 handle; 26711da177e4SLinus Torvalds 26721da177e4SLinus Torvalds skb_pull(skb, HCI_SCO_HDR_SIZE); 26731da177e4SLinus Torvalds 26741da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 26751da177e4SLinus Torvalds 26761da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); 26771da177e4SLinus Torvalds 26781da177e4SLinus Torvalds hdev->stat.sco_rx++; 26791da177e4SLinus Torvalds 26801da177e4SLinus Torvalds hci_dev_lock(hdev); 26811da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 26821da177e4SLinus Torvalds hci_dev_unlock(hdev); 26831da177e4SLinus Torvalds 26841da177e4SLinus Torvalds if (conn) { 26851da177e4SLinus Torvalds /* Send to upper protocol */ 2686686ebf28SUlisses Furquim sco_recv_scodata(conn, skb); 26871da177e4SLinus Torvalds return; 26881da177e4SLinus Torvalds } else { 26891da177e4SLinus Torvalds BT_ERR("%s SCO packet for unknown connection handle %d", 26901da177e4SLinus Torvalds hdev->name, handle); 26911da177e4SLinus Torvalds } 26921da177e4SLinus Torvalds 26931da177e4SLinus Torvalds kfree_skb(skb); 26941da177e4SLinus Torvalds } 26951da177e4SLinus Torvalds 2696b78752ccSMarcel Holtmann static void hci_rx_work(struct work_struct *work) 26971da177e4SLinus Torvalds { 2698b78752ccSMarcel Holtmann struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); 26991da177e4SLinus Torvalds struct sk_buff *skb; 27001da177e4SLinus Torvalds 27011da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 27021da177e4SLinus Torvalds 27031da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->rx_q))) { 27041da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 27051da177e4SLinus Torvalds /* Send copy to the sockets */ 2706eec8d2bcSJohan Hedberg hci_send_to_sock(hdev, skb, NULL); 27071da177e4SLinus Torvalds } 27081da177e4SLinus Torvalds 27091da177e4SLinus Torvalds if (test_bit(HCI_RAW, &hdev->flags)) { 27101da177e4SLinus Torvalds kfree_skb(skb); 27111da177e4SLinus Torvalds continue; 27121da177e4SLinus Torvalds } 27131da177e4SLinus Torvalds 27141da177e4SLinus Torvalds if (test_bit(HCI_INIT, &hdev->flags)) { 27151da177e4SLinus Torvalds /* Don't process data packets in this states. */ 27160d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 27171da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 27181da177e4SLinus Torvalds case HCI_SCODATA_PKT: 27191da177e4SLinus Torvalds kfree_skb(skb); 27201da177e4SLinus Torvalds continue; 27213ff50b79SStephen Hemminger } 27221da177e4SLinus Torvalds } 27231da177e4SLinus Torvalds 27241da177e4SLinus Torvalds /* Process frame */ 27250d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 27261da177e4SLinus Torvalds case HCI_EVENT_PKT: 2727b78752ccSMarcel Holtmann BT_DBG("%s Event packet", hdev->name); 27281da177e4SLinus Torvalds hci_event_packet(hdev, skb); 27291da177e4SLinus Torvalds break; 27301da177e4SLinus Torvalds 27311da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 27321da177e4SLinus Torvalds BT_DBG("%s ACL data packet", hdev->name); 27331da177e4SLinus Torvalds hci_acldata_packet(hdev, skb); 27341da177e4SLinus Torvalds break; 27351da177e4SLinus Torvalds 27361da177e4SLinus Torvalds case HCI_SCODATA_PKT: 27371da177e4SLinus Torvalds BT_DBG("%s SCO data packet", hdev->name); 27381da177e4SLinus Torvalds hci_scodata_packet(hdev, skb); 27391da177e4SLinus Torvalds break; 27401da177e4SLinus Torvalds 27411da177e4SLinus Torvalds default: 27421da177e4SLinus Torvalds kfree_skb(skb); 27431da177e4SLinus Torvalds break; 27441da177e4SLinus Torvalds } 27451da177e4SLinus Torvalds } 27461da177e4SLinus Torvalds } 27471da177e4SLinus Torvalds 2748c347b765SGustavo F. Padovan static void hci_cmd_work(struct work_struct *work) 27491da177e4SLinus Torvalds { 2750c347b765SGustavo F. Padovan struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); 27511da177e4SLinus Torvalds struct sk_buff *skb; 27521da177e4SLinus Torvalds 27531da177e4SLinus Torvalds BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); 27541da177e4SLinus Torvalds 27551da177e4SLinus Torvalds /* Send queued commands */ 27565a08ecceSAndrei Emeltchenko if (atomic_read(&hdev->cmd_cnt)) { 27575a08ecceSAndrei Emeltchenko skb = skb_dequeue(&hdev->cmd_q); 27585a08ecceSAndrei Emeltchenko if (!skb) 27595a08ecceSAndrei Emeltchenko return; 27605a08ecceSAndrei Emeltchenko 27611da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 27621da177e4SLinus Torvalds 276370f23020SAndrei Emeltchenko hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); 276470f23020SAndrei Emeltchenko if (hdev->sent_cmd) { 27651da177e4SLinus Torvalds atomic_dec(&hdev->cmd_cnt); 27661da177e4SLinus Torvalds hci_send_frame(skb); 27677bdb8a5cSSzymon Janc if (test_bit(HCI_RESET, &hdev->flags)) 27687bdb8a5cSSzymon Janc del_timer(&hdev->cmd_timer); 27697bdb8a5cSSzymon Janc else 27706bd32326SVille Tervo mod_timer(&hdev->cmd_timer, 27716bd32326SVille Tervo jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT)); 27721da177e4SLinus Torvalds } else { 27731da177e4SLinus Torvalds skb_queue_head(&hdev->cmd_q, skb); 2774c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 27751da177e4SLinus Torvalds } 27761da177e4SLinus Torvalds } 27771da177e4SLinus Torvalds } 27782519a1fcSAndre Guedes 27792519a1fcSAndre Guedes int hci_do_inquiry(struct hci_dev *hdev, u8 length) 27802519a1fcSAndre Guedes { 27812519a1fcSAndre Guedes /* General inquiry access code (GIAC) */ 27822519a1fcSAndre Guedes u8 lap[3] = { 0x33, 0x8b, 0x9e }; 27832519a1fcSAndre Guedes struct hci_cp_inquiry cp; 27842519a1fcSAndre Guedes 27852519a1fcSAndre Guedes BT_DBG("%s", hdev->name); 27862519a1fcSAndre Guedes 27872519a1fcSAndre Guedes if (test_bit(HCI_INQUIRY, &hdev->flags)) 27882519a1fcSAndre Guedes return -EINPROGRESS; 27892519a1fcSAndre Guedes 27904663262cSJohan Hedberg inquiry_cache_flush(hdev); 27914663262cSJohan Hedberg 27922519a1fcSAndre Guedes memset(&cp, 0, sizeof(cp)); 27932519a1fcSAndre Guedes memcpy(&cp.lap, lap, sizeof(cp.lap)); 27942519a1fcSAndre Guedes cp.length = length; 27952519a1fcSAndre Guedes 27962519a1fcSAndre Guedes return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 27972519a1fcSAndre Guedes } 2798023d5049SAndre Guedes 2799023d5049SAndre Guedes int hci_cancel_inquiry(struct hci_dev *hdev) 2800023d5049SAndre Guedes { 2801023d5049SAndre Guedes BT_DBG("%s", hdev->name); 2802023d5049SAndre Guedes 2803023d5049SAndre Guedes if (!test_bit(HCI_INQUIRY, &hdev->flags)) 2804023d5049SAndre Guedes return -EPERM; 2805023d5049SAndre Guedes 2806023d5049SAndre Guedes return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); 2807023d5049SAndre Guedes } 28087784d78fSAndrei Emeltchenko 28097784d78fSAndrei Emeltchenko module_param(enable_hs, bool, 0644); 28107784d78fSAndrei Emeltchenko MODULE_PARM_DESC(enable_hs, "Enable High Speed"); 2811