11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds BlueZ - Bluetooth protocol stack for Linux 31da177e4SLinus Torvalds Copyright (C) 2000-2001 Qualcomm Incorporated 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds This program is free software; you can redistribute it and/or modify 81da177e4SLinus Torvalds it under the terms of the GNU General Public License version 2 as 91da177e4SLinus Torvalds published by the Free Software Foundation; 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 121da177e4SLinus Torvalds OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 131da177e4SLinus Torvalds FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 141da177e4SLinus Torvalds IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 151da177e4SLinus Torvalds CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 161da177e4SLinus Torvalds WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 171da177e4SLinus Torvalds ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 181da177e4SLinus Torvalds OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 211da177e4SLinus Torvalds COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 221da177e4SLinus Torvalds SOFTWARE IS DISCLAIMED. 231da177e4SLinus Torvalds */ 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds /* Bluetooth HCI core. */ 261da177e4SLinus Torvalds 2782453021SS.Çağlar Onur #include <linux/jiffies.h> 281da177e4SLinus Torvalds #include <linux/module.h> 291da177e4SLinus Torvalds #include <linux/kmod.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <linux/types.h> 321da177e4SLinus Torvalds #include <linux/errno.h> 331da177e4SLinus Torvalds #include <linux/kernel.h> 341da177e4SLinus Torvalds #include <linux/sched.h> 351da177e4SLinus Torvalds #include <linux/slab.h> 361da177e4SLinus Torvalds #include <linux/poll.h> 371da177e4SLinus Torvalds #include <linux/fcntl.h> 381da177e4SLinus Torvalds #include <linux/init.h> 391da177e4SLinus Torvalds #include <linux/skbuff.h> 401da177e4SLinus Torvalds #include <linux/interrupt.h> 411da177e4SLinus Torvalds #include <linux/notifier.h> 42611b30f7SMarcel Holtmann #include <linux/rfkill.h> 431da177e4SLinus Torvalds #include <net/sock.h> 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds #include <asm/system.h> 461da177e4SLinus Torvalds #include <asm/uaccess.h> 471da177e4SLinus Torvalds #include <asm/unaligned.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds #include <net/bluetooth/bluetooth.h> 501da177e4SLinus Torvalds #include <net/bluetooth/hci_core.h> 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds static void hci_cmd_task(unsigned long arg); 531da177e4SLinus Torvalds static void hci_rx_task(unsigned long arg); 541da177e4SLinus Torvalds static void hci_tx_task(unsigned long arg); 551da177e4SLinus Torvalds static void hci_notify(struct hci_dev *hdev, int event); 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds static DEFINE_RWLOCK(hci_task_lock); 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds /* HCI device list */ 601da177e4SLinus Torvalds LIST_HEAD(hci_dev_list); 611da177e4SLinus Torvalds DEFINE_RWLOCK(hci_dev_list_lock); 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds /* HCI callback list */ 641da177e4SLinus Torvalds LIST_HEAD(hci_cb_list); 651da177e4SLinus Torvalds DEFINE_RWLOCK(hci_cb_list_lock); 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* HCI protocols */ 681da177e4SLinus Torvalds #define HCI_MAX_PROTO 2 691da177e4SLinus Torvalds struct hci_proto *hci_proto[HCI_MAX_PROTO]; 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds /* HCI notifiers list */ 72e041c683SAlan Stern static ATOMIC_NOTIFIER_HEAD(hci_notifier); 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds /* ---- HCI notifications ---- */ 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds int hci_register_notifier(struct notifier_block *nb) 771da177e4SLinus Torvalds { 78e041c683SAlan Stern return atomic_notifier_chain_register(&hci_notifier, nb); 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds int hci_unregister_notifier(struct notifier_block *nb) 821da177e4SLinus Torvalds { 83e041c683SAlan Stern return atomic_notifier_chain_unregister(&hci_notifier, nb); 841da177e4SLinus Torvalds } 851da177e4SLinus Torvalds 866516455dSMarcel Holtmann static void hci_notify(struct hci_dev *hdev, int event) 871da177e4SLinus Torvalds { 88e041c683SAlan Stern atomic_notifier_call_chain(&hci_notifier, event, hdev); 891da177e4SLinus Torvalds } 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds /* ---- HCI requests ---- */ 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds void hci_req_complete(struct hci_dev *hdev, int result) 941da177e4SLinus Torvalds { 951da177e4SLinus Torvalds BT_DBG("%s result 0x%2.2x", hdev->name, result); 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 981da177e4SLinus Torvalds hdev->req_result = result; 991da177e4SLinus Torvalds hdev->req_status = HCI_REQ_DONE; 1001da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1011da177e4SLinus Torvalds } 1021da177e4SLinus Torvalds } 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds static void hci_req_cancel(struct hci_dev *hdev, int err) 1051da177e4SLinus Torvalds { 1061da177e4SLinus Torvalds BT_DBG("%s err 0x%2.2x", hdev->name, err); 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 1091da177e4SLinus Torvalds hdev->req_result = err; 1101da177e4SLinus Torvalds hdev->req_status = HCI_REQ_CANCELED; 1111da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1121da177e4SLinus Torvalds } 1131da177e4SLinus Torvalds } 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds /* Execute request and wait for completion. */ 1161da177e4SLinus Torvalds static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1171da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1181da177e4SLinus Torvalds { 1191da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 1201da177e4SLinus Torvalds int err = 0; 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds BT_DBG("%s start", hdev->name); 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds hdev->req_status = HCI_REQ_PEND; 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds add_wait_queue(&hdev->req_wait_q, &wait); 1271da177e4SLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds req(hdev, opt); 1301da177e4SLinus Torvalds schedule_timeout(timeout); 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds remove_wait_queue(&hdev->req_wait_q, &wait); 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds if (signal_pending(current)) 1351da177e4SLinus Torvalds return -EINTR; 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds switch (hdev->req_status) { 1381da177e4SLinus Torvalds case HCI_REQ_DONE: 1391da177e4SLinus Torvalds err = -bt_err(hdev->req_result); 1401da177e4SLinus Torvalds break; 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds case HCI_REQ_CANCELED: 1431da177e4SLinus Torvalds err = -hdev->req_result; 1441da177e4SLinus Torvalds break; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds default: 1471da177e4SLinus Torvalds err = -ETIMEDOUT; 1481da177e4SLinus Torvalds break; 1493ff50b79SStephen Hemminger } 1501da177e4SLinus Torvalds 1511da177e4SLinus Torvalds hdev->req_status = hdev->req_result = 0; 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds BT_DBG("%s end: err %d", hdev->name, err); 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds return err; 1561da177e4SLinus Torvalds } 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1591da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1601da177e4SLinus Torvalds { 1611da177e4SLinus Torvalds int ret; 1621da177e4SLinus Torvalds 1637c6a329eSMarcel Holtmann if (!test_bit(HCI_UP, &hdev->flags)) 1647c6a329eSMarcel Holtmann return -ENETDOWN; 1657c6a329eSMarcel Holtmann 1661da177e4SLinus Torvalds /* Serialize all requests */ 1671da177e4SLinus Torvalds hci_req_lock(hdev); 1681da177e4SLinus Torvalds ret = __hci_request(hdev, req, opt, timeout); 1691da177e4SLinus Torvalds hci_req_unlock(hdev); 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds return ret; 1721da177e4SLinus Torvalds } 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) 1751da177e4SLinus Torvalds { 1761da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds /* Reset device */ 179a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 1801da177e4SLinus Torvalds } 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds static void hci_init_req(struct hci_dev *hdev, unsigned long opt) 1831da177e4SLinus Torvalds { 1841da177e4SLinus Torvalds struct sk_buff *skb; 1851ebb9252SMarcel Holtmann __le16 param; 18689f2783dSMarcel Holtmann __u8 flt_type; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds /* Driver initialization */ 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds /* Special commands */ 1931da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->driver_init))) { 1940d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 1951da177e4SLinus Torvalds skb->dev = (void *) hdev; 196*c78ae283SMarcel Holtmann 1971da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 198*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 1991da177e4SLinus Torvalds } 2001da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds /* Mandatory initialization */ 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds /* Reset */ 2057a9d4020SMarcel Holtmann if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) 206a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds /* Read Local Supported Features */ 209a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); 2101da177e4SLinus Torvalds 2111143e5a6SMarcel Holtmann /* Read Local Version */ 212a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 2131143e5a6SMarcel Holtmann 2141da177e4SLinus Torvalds /* Read Buffer Size (ACL mtu, max pkt, etc.) */ 215a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds #if 0 2181da177e4SLinus Torvalds /* Host buffer size */ 2191da177e4SLinus Torvalds { 2201da177e4SLinus Torvalds struct hci_cp_host_buffer_size cp; 221aca3192cSYOSHIFUJI Hideaki cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); 2221da177e4SLinus Torvalds cp.sco_mtu = HCI_MAX_SCO_SIZE; 223aca3192cSYOSHIFUJI Hideaki cp.acl_max_pkt = cpu_to_le16(0xffff); 224aca3192cSYOSHIFUJI Hideaki cp.sco_max_pkt = cpu_to_le16(0xffff); 225a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds #endif 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds /* Read BD Address */ 230a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); 231a9de9248SMarcel Holtmann 232a9de9248SMarcel Holtmann /* Read Class of Device */ 233a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); 234a9de9248SMarcel Holtmann 235a9de9248SMarcel Holtmann /* Read Local Name */ 236a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds /* Read Voice Setting */ 239a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds /* Optional initialization */ 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds /* Clear Event Filters */ 24489f2783dSMarcel Holtmann flt_type = HCI_FLT_CLEAR_ALL; 245a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds /* Page timeout ~20 secs */ 248aca3192cSYOSHIFUJI Hideaki param = cpu_to_le16(0x8000); 249a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_PG_TIMEOUT, 2, ¶m); 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds /* Connection accept timeout ~20 secs */ 252aca3192cSYOSHIFUJI Hideaki param = cpu_to_le16(0x7d00); 253a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); 2541da177e4SLinus Torvalds } 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) 2571da177e4SLinus Torvalds { 2581da177e4SLinus Torvalds __u8 scan = opt; 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, scan); 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds /* Inquiry and Page scans */ 263a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 2641da177e4SLinus Torvalds } 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) 2671da177e4SLinus Torvalds { 2681da177e4SLinus Torvalds __u8 auth = opt; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, auth); 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds /* Authentication */ 273a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) 2771da177e4SLinus Torvalds { 2781da177e4SLinus Torvalds __u8 encrypt = opt; 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, encrypt); 2811da177e4SLinus Torvalds 282e4e8e37cSMarcel Holtmann /* Encryption */ 283a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); 2841da177e4SLinus Torvalds } 2851da177e4SLinus Torvalds 286e4e8e37cSMarcel Holtmann static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) 287e4e8e37cSMarcel Holtmann { 288e4e8e37cSMarcel Holtmann __le16 policy = cpu_to_le16(opt); 289e4e8e37cSMarcel Holtmann 290a418b893SMarcel Holtmann BT_DBG("%s %x", hdev->name, policy); 291e4e8e37cSMarcel Holtmann 292e4e8e37cSMarcel Holtmann /* Default link policy */ 293e4e8e37cSMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); 294e4e8e37cSMarcel Holtmann } 295e4e8e37cSMarcel Holtmann 2961da177e4SLinus Torvalds /* Get HCI device by index. 2971da177e4SLinus Torvalds * Device is held on return. */ 2981da177e4SLinus Torvalds struct hci_dev *hci_dev_get(int index) 2991da177e4SLinus Torvalds { 3001da177e4SLinus Torvalds struct hci_dev *hdev = NULL; 3011da177e4SLinus Torvalds struct list_head *p; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds BT_DBG("%d", index); 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds if (index < 0) 3061da177e4SLinus Torvalds return NULL; 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds read_lock(&hci_dev_list_lock); 3091da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 3101da177e4SLinus Torvalds struct hci_dev *d = list_entry(p, struct hci_dev, list); 3111da177e4SLinus Torvalds if (d->id == index) { 3121da177e4SLinus Torvalds hdev = hci_dev_hold(d); 3131da177e4SLinus Torvalds break; 3141da177e4SLinus Torvalds } 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds read_unlock(&hci_dev_list_lock); 3171da177e4SLinus Torvalds return hdev; 3181da177e4SLinus Torvalds } 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds /* ---- Inquiry support ---- */ 3211da177e4SLinus Torvalds static void inquiry_cache_flush(struct hci_dev *hdev) 3221da177e4SLinus Torvalds { 3231da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3241da177e4SLinus Torvalds struct inquiry_entry *next = cache->list, *e; 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds BT_DBG("cache %p", cache); 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds cache->list = NULL; 3291da177e4SLinus Torvalds while ((e = next)) { 3301da177e4SLinus Torvalds next = e->next; 3311da177e4SLinus Torvalds kfree(e); 3321da177e4SLinus Torvalds } 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) 3361da177e4SLinus Torvalds { 3371da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3381da177e4SLinus Torvalds struct inquiry_entry *e; 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds for (e = cache->list; e; e = e->next) 3431da177e4SLinus Torvalds if (!bacmp(&e->data.bdaddr, bdaddr)) 3441da177e4SLinus Torvalds break; 3451da177e4SLinus Torvalds return e; 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) 3491da177e4SLinus Torvalds { 3501da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3511da177e4SLinus Torvalds struct inquiry_entry *e; 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds if (!(e = hci_inquiry_cache_lookup(hdev, &data->bdaddr))) { 3561da177e4SLinus Torvalds /* Entry not in the cache. Add new one. */ 35725ea6db0SMarcel Holtmann if (!(e = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC))) 3581da177e4SLinus Torvalds return; 3591da177e4SLinus Torvalds e->next = cache->list; 3601da177e4SLinus Torvalds cache->list = e; 3611da177e4SLinus Torvalds } 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds memcpy(&e->data, data, sizeof(*data)); 3641da177e4SLinus Torvalds e->timestamp = jiffies; 3651da177e4SLinus Torvalds cache->timestamp = jiffies; 3661da177e4SLinus Torvalds } 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) 3691da177e4SLinus Torvalds { 3701da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3711da177e4SLinus Torvalds struct inquiry_info *info = (struct inquiry_info *) buf; 3721da177e4SLinus Torvalds struct inquiry_entry *e; 3731da177e4SLinus Torvalds int copied = 0; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds for (e = cache->list; e && copied < num; e = e->next, copied++) { 3761da177e4SLinus Torvalds struct inquiry_data *data = &e->data; 3771da177e4SLinus Torvalds bacpy(&info->bdaddr, &data->bdaddr); 3781da177e4SLinus Torvalds info->pscan_rep_mode = data->pscan_rep_mode; 3791da177e4SLinus Torvalds info->pscan_period_mode = data->pscan_period_mode; 3801da177e4SLinus Torvalds info->pscan_mode = data->pscan_mode; 3811da177e4SLinus Torvalds memcpy(info->dev_class, data->dev_class, 3); 3821da177e4SLinus Torvalds info->clock_offset = data->clock_offset; 3831da177e4SLinus Torvalds info++; 3841da177e4SLinus Torvalds } 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds BT_DBG("cache %p, copied %d", cache, copied); 3871da177e4SLinus Torvalds return copied; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) 3911da177e4SLinus Torvalds { 3921da177e4SLinus Torvalds struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; 3931da177e4SLinus Torvalds struct hci_cp_inquiry cp; 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds if (test_bit(HCI_INQUIRY, &hdev->flags)) 3981da177e4SLinus Torvalds return; 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds /* Start Inquiry */ 4011da177e4SLinus Torvalds memcpy(&cp.lap, &ir->lap, 3); 4021da177e4SLinus Torvalds cp.length = ir->length; 4031da177e4SLinus Torvalds cp.num_rsp = ir->num_rsp; 404a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 4051da177e4SLinus Torvalds } 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds int hci_inquiry(void __user *arg) 4081da177e4SLinus Torvalds { 4091da177e4SLinus Torvalds __u8 __user *ptr = arg; 4101da177e4SLinus Torvalds struct hci_inquiry_req ir; 4111da177e4SLinus Torvalds struct hci_dev *hdev; 4121da177e4SLinus Torvalds int err = 0, do_inquiry = 0, max_rsp; 4131da177e4SLinus Torvalds long timeo; 4141da177e4SLinus Torvalds __u8 *buf; 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds if (copy_from_user(&ir, ptr, sizeof(ir))) 4171da177e4SLinus Torvalds return -EFAULT; 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds if (!(hdev = hci_dev_get(ir.dev_id))) 4201da177e4SLinus Torvalds return -ENODEV; 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 4231da177e4SLinus Torvalds if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || 4241da177e4SLinus Torvalds inquiry_cache_empty(hdev) || 4251da177e4SLinus Torvalds ir.flags & IREQ_CACHE_FLUSH) { 4261da177e4SLinus Torvalds inquiry_cache_flush(hdev); 4271da177e4SLinus Torvalds do_inquiry = 1; 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 4301da177e4SLinus Torvalds 43104837f64SMarcel Holtmann timeo = ir.length * msecs_to_jiffies(2000); 4321da177e4SLinus Torvalds if (do_inquiry && (err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo)) < 0) 4331da177e4SLinus Torvalds goto done; 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds /* for unlimited number of responses we will use buffer with 255 entries */ 4361da177e4SLinus Torvalds max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds /* cache_dump can't sleep. Therefore we allocate temp buffer and then 4391da177e4SLinus Torvalds * copy it to the user space. 4401da177e4SLinus Torvalds */ 4411da177e4SLinus Torvalds if (!(buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL))) { 4421da177e4SLinus Torvalds err = -ENOMEM; 4431da177e4SLinus Torvalds goto done; 4441da177e4SLinus Torvalds } 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 4471da177e4SLinus Torvalds ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); 4481da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds BT_DBG("num_rsp %d", ir.num_rsp); 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds if (!copy_to_user(ptr, &ir, sizeof(ir))) { 4531da177e4SLinus Torvalds ptr += sizeof(ir); 4541da177e4SLinus Torvalds if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * 4551da177e4SLinus Torvalds ir.num_rsp)) 4561da177e4SLinus Torvalds err = -EFAULT; 4571da177e4SLinus Torvalds } else 4581da177e4SLinus Torvalds err = -EFAULT; 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds kfree(buf); 4611da177e4SLinus Torvalds 4621da177e4SLinus Torvalds done: 4631da177e4SLinus Torvalds hci_dev_put(hdev); 4641da177e4SLinus Torvalds return err; 4651da177e4SLinus Torvalds } 4661da177e4SLinus Torvalds 4671da177e4SLinus Torvalds /* ---- HCI ioctl helpers ---- */ 4681da177e4SLinus Torvalds 4691da177e4SLinus Torvalds int hci_dev_open(__u16 dev) 4701da177e4SLinus Torvalds { 4711da177e4SLinus Torvalds struct hci_dev *hdev; 4721da177e4SLinus Torvalds int ret = 0; 4731da177e4SLinus Torvalds 4741da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 4751da177e4SLinus Torvalds return -ENODEV; 4761da177e4SLinus Torvalds 4771da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds hci_req_lock(hdev); 4801da177e4SLinus Torvalds 481611b30f7SMarcel Holtmann if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { 482611b30f7SMarcel Holtmann ret = -ERFKILL; 483611b30f7SMarcel Holtmann goto done; 484611b30f7SMarcel Holtmann } 485611b30f7SMarcel Holtmann 4861da177e4SLinus Torvalds if (test_bit(HCI_UP, &hdev->flags)) { 4871da177e4SLinus Torvalds ret = -EALREADY; 4881da177e4SLinus Torvalds goto done; 4891da177e4SLinus Torvalds } 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 4921da177e4SLinus Torvalds set_bit(HCI_RAW, &hdev->flags); 4931da177e4SLinus Torvalds 4941da177e4SLinus Torvalds if (hdev->open(hdev)) { 4951da177e4SLinus Torvalds ret = -EIO; 4961da177e4SLinus Torvalds goto done; 4971da177e4SLinus Torvalds } 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5001da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5011da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 5021da177e4SLinus Torvalds 5031da177e4SLinus Torvalds //__hci_request(hdev, hci_reset_req, 0, HZ); 50404837f64SMarcel Holtmann ret = __hci_request(hdev, hci_init_req, 0, 50504837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 5061da177e4SLinus Torvalds 5071da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds 5101da177e4SLinus Torvalds if (!ret) { 5111da177e4SLinus Torvalds hci_dev_hold(hdev); 5121da177e4SLinus Torvalds set_bit(HCI_UP, &hdev->flags); 5131da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UP); 5141da177e4SLinus Torvalds } else { 5151da177e4SLinus Torvalds /* Init failed, cleanup */ 5161da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5171da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5181da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5211da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds if (hdev->flush) 5241da177e4SLinus Torvalds hdev->flush(hdev); 5251da177e4SLinus Torvalds 5261da177e4SLinus Torvalds if (hdev->sent_cmd) { 5271da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5281da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5291da177e4SLinus Torvalds } 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds hdev->close(hdev); 5321da177e4SLinus Torvalds hdev->flags = 0; 5331da177e4SLinus Torvalds } 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds done: 5361da177e4SLinus Torvalds hci_req_unlock(hdev); 5371da177e4SLinus Torvalds hci_dev_put(hdev); 5381da177e4SLinus Torvalds return ret; 5391da177e4SLinus Torvalds } 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds static int hci_dev_do_close(struct hci_dev *hdev) 5421da177e4SLinus Torvalds { 5431da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds hci_req_cancel(hdev, ENODEV); 5461da177e4SLinus Torvalds hci_req_lock(hdev); 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { 5491da177e4SLinus Torvalds hci_req_unlock(hdev); 5501da177e4SLinus Torvalds return 0; 5511da177e4SLinus Torvalds } 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds /* Kill RX and TX tasks */ 5541da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5551da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 5581da177e4SLinus Torvalds inquiry_cache_flush(hdev); 5591da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 5601da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_DOWN); 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds if (hdev->flush) 5651da177e4SLinus Torvalds hdev->flush(hdev); 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds /* Reset device */ 5681da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5691da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5701da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5711da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 57204837f64SMarcel Holtmann __hci_request(hdev, hci_reset_req, 0, 57304837f64SMarcel Holtmann msecs_to_jiffies(250)); 5741da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5751da177e4SLinus Torvalds } 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds /* Kill cmd task */ 5781da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds /* Drop queues */ 5811da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5821da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5831da177e4SLinus Torvalds skb_queue_purge(&hdev->raw_q); 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /* Drop last sent command */ 5861da177e4SLinus Torvalds if (hdev->sent_cmd) { 5871da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5881da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5891da177e4SLinus Torvalds } 5901da177e4SLinus Torvalds 5911da177e4SLinus Torvalds /* After this point our queues are empty 5921da177e4SLinus Torvalds * and no tasks are scheduled. */ 5931da177e4SLinus Torvalds hdev->close(hdev); 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds /* Clear flags */ 5961da177e4SLinus Torvalds hdev->flags = 0; 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds hci_req_unlock(hdev); 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds hci_dev_put(hdev); 6011da177e4SLinus Torvalds return 0; 6021da177e4SLinus Torvalds } 6031da177e4SLinus Torvalds 6041da177e4SLinus Torvalds int hci_dev_close(__u16 dev) 6051da177e4SLinus Torvalds { 6061da177e4SLinus Torvalds struct hci_dev *hdev; 6071da177e4SLinus Torvalds int err; 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6101da177e4SLinus Torvalds return -ENODEV; 6111da177e4SLinus Torvalds err = hci_dev_do_close(hdev); 6121da177e4SLinus Torvalds hci_dev_put(hdev); 6131da177e4SLinus Torvalds return err; 6141da177e4SLinus Torvalds } 6151da177e4SLinus Torvalds 6161da177e4SLinus Torvalds int hci_dev_reset(__u16 dev) 6171da177e4SLinus Torvalds { 6181da177e4SLinus Torvalds struct hci_dev *hdev; 6191da177e4SLinus Torvalds int ret = 0; 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6221da177e4SLinus Torvalds return -ENODEV; 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvalds hci_req_lock(hdev); 6251da177e4SLinus Torvalds tasklet_disable(&hdev->tx_task); 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds if (!test_bit(HCI_UP, &hdev->flags)) 6281da177e4SLinus Torvalds goto done; 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds /* Drop queues */ 6311da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 6321da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 6351da177e4SLinus Torvalds inquiry_cache_flush(hdev); 6361da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 6371da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 6381da177e4SLinus Torvalds 6391da177e4SLinus Torvalds if (hdev->flush) 6401da177e4SLinus Torvalds hdev->flush(hdev); 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 6431da177e4SLinus Torvalds hdev->acl_cnt = 0; hdev->sco_cnt = 0; 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) 64604837f64SMarcel Holtmann ret = __hci_request(hdev, hci_reset_req, 0, 64704837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6481da177e4SLinus Torvalds 6491da177e4SLinus Torvalds done: 6501da177e4SLinus Torvalds tasklet_enable(&hdev->tx_task); 6511da177e4SLinus Torvalds hci_req_unlock(hdev); 6521da177e4SLinus Torvalds hci_dev_put(hdev); 6531da177e4SLinus Torvalds return ret; 6541da177e4SLinus Torvalds } 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds int hci_dev_reset_stat(__u16 dev) 6571da177e4SLinus Torvalds { 6581da177e4SLinus Torvalds struct hci_dev *hdev; 6591da177e4SLinus Torvalds int ret = 0; 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6621da177e4SLinus Torvalds return -ENODEV; 6631da177e4SLinus Torvalds 6641da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 6651da177e4SLinus Torvalds 6661da177e4SLinus Torvalds hci_dev_put(hdev); 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds return ret; 6691da177e4SLinus Torvalds } 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds int hci_dev_cmd(unsigned int cmd, void __user *arg) 6721da177e4SLinus Torvalds { 6731da177e4SLinus Torvalds struct hci_dev *hdev; 6741da177e4SLinus Torvalds struct hci_dev_req dr; 6751da177e4SLinus Torvalds int err = 0; 6761da177e4SLinus Torvalds 6771da177e4SLinus Torvalds if (copy_from_user(&dr, arg, sizeof(dr))) 6781da177e4SLinus Torvalds return -EFAULT; 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dr.dev_id))) 6811da177e4SLinus Torvalds return -ENODEV; 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds switch (cmd) { 6841da177e4SLinus Torvalds case HCISETAUTH: 68504837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 68604837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6871da177e4SLinus Torvalds break; 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds case HCISETENCRYPT: 6901da177e4SLinus Torvalds if (!lmp_encrypt_capable(hdev)) { 6911da177e4SLinus Torvalds err = -EOPNOTSUPP; 6921da177e4SLinus Torvalds break; 6931da177e4SLinus Torvalds } 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds if (!test_bit(HCI_AUTH, &hdev->flags)) { 6961da177e4SLinus Torvalds /* Auth must be enabled first */ 69704837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 69804837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6991da177e4SLinus Torvalds if (err) 7001da177e4SLinus Torvalds break; 7011da177e4SLinus Torvalds } 7021da177e4SLinus Torvalds 70304837f64SMarcel Holtmann err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, 70404837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7051da177e4SLinus Torvalds break; 7061da177e4SLinus Torvalds 7071da177e4SLinus Torvalds case HCISETSCAN: 70804837f64SMarcel Holtmann err = hci_request(hdev, hci_scan_req, dr.dev_opt, 70904837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7101da177e4SLinus Torvalds break; 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds case HCISETLINKPOL: 713e4e8e37cSMarcel Holtmann err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, 714e4e8e37cSMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7151da177e4SLinus Torvalds break; 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvalds case HCISETLINKMODE: 718e4e8e37cSMarcel Holtmann hdev->link_mode = ((__u16) dr.dev_opt) & 719e4e8e37cSMarcel Holtmann (HCI_LM_MASTER | HCI_LM_ACCEPT); 720e4e8e37cSMarcel Holtmann break; 721e4e8e37cSMarcel Holtmann 722e4e8e37cSMarcel Holtmann case HCISETPTYPE: 723e4e8e37cSMarcel Holtmann hdev->pkt_type = (__u16) dr.dev_opt; 7241da177e4SLinus Torvalds break; 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds case HCISETACLMTU: 7271da177e4SLinus Torvalds hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); 7281da177e4SLinus Torvalds hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); 7291da177e4SLinus Torvalds break; 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds case HCISETSCOMTU: 7321da177e4SLinus Torvalds hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); 7331da177e4SLinus Torvalds hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); 7341da177e4SLinus Torvalds break; 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds default: 7371da177e4SLinus Torvalds err = -EINVAL; 7381da177e4SLinus Torvalds break; 7391da177e4SLinus Torvalds } 740e4e8e37cSMarcel Holtmann 7411da177e4SLinus Torvalds hci_dev_put(hdev); 7421da177e4SLinus Torvalds return err; 7431da177e4SLinus Torvalds } 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds int hci_get_dev_list(void __user *arg) 7461da177e4SLinus Torvalds { 7471da177e4SLinus Torvalds struct hci_dev_list_req *dl; 7481da177e4SLinus Torvalds struct hci_dev_req *dr; 7491da177e4SLinus Torvalds struct list_head *p; 7501da177e4SLinus Torvalds int n = 0, size, err; 7511da177e4SLinus Torvalds __u16 dev_num; 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds if (get_user(dev_num, (__u16 __user *) arg)) 7541da177e4SLinus Torvalds return -EFAULT; 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) 7571da177e4SLinus Torvalds return -EINVAL; 7581da177e4SLinus Torvalds 7591da177e4SLinus Torvalds size = sizeof(*dl) + dev_num * sizeof(*dr); 7601da177e4SLinus Torvalds 761c6bf514cSVegard Nossum if (!(dl = kzalloc(size, GFP_KERNEL))) 7621da177e4SLinus Torvalds return -ENOMEM; 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds dr = dl->dev_req; 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds read_lock_bh(&hci_dev_list_lock); 7671da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 7681da177e4SLinus Torvalds struct hci_dev *hdev; 7691da177e4SLinus Torvalds hdev = list_entry(p, struct hci_dev, list); 7701da177e4SLinus Torvalds (dr + n)->dev_id = hdev->id; 7711da177e4SLinus Torvalds (dr + n)->dev_opt = hdev->flags; 7721da177e4SLinus Torvalds if (++n >= dev_num) 7731da177e4SLinus Torvalds break; 7741da177e4SLinus Torvalds } 7751da177e4SLinus Torvalds read_unlock_bh(&hci_dev_list_lock); 7761da177e4SLinus Torvalds 7771da177e4SLinus Torvalds dl->dev_num = n; 7781da177e4SLinus Torvalds size = sizeof(*dl) + n * sizeof(*dr); 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds err = copy_to_user(arg, dl, size); 7811da177e4SLinus Torvalds kfree(dl); 7821da177e4SLinus Torvalds 7831da177e4SLinus Torvalds return err ? -EFAULT : 0; 7841da177e4SLinus Torvalds } 7851da177e4SLinus Torvalds 7861da177e4SLinus Torvalds int hci_get_dev_info(void __user *arg) 7871da177e4SLinus Torvalds { 7881da177e4SLinus Torvalds struct hci_dev *hdev; 7891da177e4SLinus Torvalds struct hci_dev_info di; 7901da177e4SLinus Torvalds int err = 0; 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvalds if (copy_from_user(&di, arg, sizeof(di))) 7931da177e4SLinus Torvalds return -EFAULT; 7941da177e4SLinus Torvalds 7951da177e4SLinus Torvalds if (!(hdev = hci_dev_get(di.dev_id))) 7961da177e4SLinus Torvalds return -ENODEV; 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds strcpy(di.name, hdev->name); 7991da177e4SLinus Torvalds di.bdaddr = hdev->bdaddr; 8001da177e4SLinus Torvalds di.type = hdev->type; 8011da177e4SLinus Torvalds di.flags = hdev->flags; 8021da177e4SLinus Torvalds di.pkt_type = hdev->pkt_type; 8031da177e4SLinus Torvalds di.acl_mtu = hdev->acl_mtu; 8041da177e4SLinus Torvalds di.acl_pkts = hdev->acl_pkts; 8051da177e4SLinus Torvalds di.sco_mtu = hdev->sco_mtu; 8061da177e4SLinus Torvalds di.sco_pkts = hdev->sco_pkts; 8071da177e4SLinus Torvalds di.link_policy = hdev->link_policy; 8081da177e4SLinus Torvalds di.link_mode = hdev->link_mode; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); 8111da177e4SLinus Torvalds memcpy(&di.features, &hdev->features, sizeof(di.features)); 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds if (copy_to_user(arg, &di, sizeof(di))) 8141da177e4SLinus Torvalds err = -EFAULT; 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds hci_dev_put(hdev); 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds return err; 8191da177e4SLinus Torvalds } 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds /* ---- Interface to HCI drivers ---- */ 8221da177e4SLinus Torvalds 823611b30f7SMarcel Holtmann static int hci_rfkill_set_block(void *data, bool blocked) 824611b30f7SMarcel Holtmann { 825611b30f7SMarcel Holtmann struct hci_dev *hdev = data; 826611b30f7SMarcel Holtmann 827611b30f7SMarcel Holtmann BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); 828611b30f7SMarcel Holtmann 829611b30f7SMarcel Holtmann if (!blocked) 830611b30f7SMarcel Holtmann return 0; 831611b30f7SMarcel Holtmann 832611b30f7SMarcel Holtmann hci_dev_do_close(hdev); 833611b30f7SMarcel Holtmann 834611b30f7SMarcel Holtmann return 0; 835611b30f7SMarcel Holtmann } 836611b30f7SMarcel Holtmann 837611b30f7SMarcel Holtmann static const struct rfkill_ops hci_rfkill_ops = { 838611b30f7SMarcel Holtmann .set_block = hci_rfkill_set_block, 839611b30f7SMarcel Holtmann }; 840611b30f7SMarcel Holtmann 8411da177e4SLinus Torvalds /* Alloc HCI device */ 8421da177e4SLinus Torvalds struct hci_dev *hci_alloc_dev(void) 8431da177e4SLinus Torvalds { 8441da177e4SLinus Torvalds struct hci_dev *hdev; 8451da177e4SLinus Torvalds 84625ea6db0SMarcel Holtmann hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); 8471da177e4SLinus Torvalds if (!hdev) 8481da177e4SLinus Torvalds return NULL; 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvalds skb_queue_head_init(&hdev->driver_init); 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds return hdev; 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds EXPORT_SYMBOL(hci_alloc_dev); 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds /* Free HCI device */ 8571da177e4SLinus Torvalds void hci_free_dev(struct hci_dev *hdev) 8581da177e4SLinus Torvalds { 8591da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 8601da177e4SLinus Torvalds 861a91f2e39SMarcel Holtmann /* will free via device release */ 862a91f2e39SMarcel Holtmann put_device(&hdev->dev); 8631da177e4SLinus Torvalds } 8641da177e4SLinus Torvalds EXPORT_SYMBOL(hci_free_dev); 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds /* Register HCI device */ 8671da177e4SLinus Torvalds int hci_register_dev(struct hci_dev *hdev) 8681da177e4SLinus Torvalds { 8691da177e4SLinus Torvalds struct list_head *head = &hci_dev_list, *p; 870ef222013SMarcel Holtmann int i, id = 0; 8711da177e4SLinus Torvalds 872611b30f7SMarcel Holtmann BT_DBG("%p name %s type %d owner %p", hdev, hdev->name, 873611b30f7SMarcel Holtmann hdev->type, hdev->owner); 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds if (!hdev->open || !hdev->close || !hdev->destruct) 8761da177e4SLinus Torvalds return -EINVAL; 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds /* Find first available device id */ 8811da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 8821da177e4SLinus Torvalds if (list_entry(p, struct hci_dev, list)->id != id) 8831da177e4SLinus Torvalds break; 8841da177e4SLinus Torvalds head = p; id++; 8851da177e4SLinus Torvalds } 8861da177e4SLinus Torvalds 8871da177e4SLinus Torvalds sprintf(hdev->name, "hci%d", id); 8881da177e4SLinus Torvalds hdev->id = id; 8891da177e4SLinus Torvalds list_add(&hdev->list, head); 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds atomic_set(&hdev->refcnt, 1); 8921da177e4SLinus Torvalds spin_lock_init(&hdev->lock); 8931da177e4SLinus Torvalds 8941da177e4SLinus Torvalds hdev->flags = 0; 8951da177e4SLinus Torvalds hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); 8965b7f9909SMarcel Holtmann hdev->esco_type = (ESCO_HV1); 8971da177e4SLinus Torvalds hdev->link_mode = (HCI_LM_ACCEPT); 8981da177e4SLinus Torvalds 89904837f64SMarcel Holtmann hdev->idle_timeout = 0; 90004837f64SMarcel Holtmann hdev->sniff_max_interval = 800; 90104837f64SMarcel Holtmann hdev->sniff_min_interval = 80; 90204837f64SMarcel Holtmann 9031da177e4SLinus Torvalds tasklet_init(&hdev->cmd_task, hci_cmd_task,(unsigned long) hdev); 9041da177e4SLinus Torvalds tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); 9051da177e4SLinus Torvalds tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); 9061da177e4SLinus Torvalds 9071da177e4SLinus Torvalds skb_queue_head_init(&hdev->rx_q); 9081da177e4SLinus Torvalds skb_queue_head_init(&hdev->cmd_q); 9091da177e4SLinus Torvalds skb_queue_head_init(&hdev->raw_q); 9101da177e4SLinus Torvalds 911ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 912ef222013SMarcel Holtmann hdev->reassembly[i] = NULL; 913ef222013SMarcel Holtmann 9141da177e4SLinus Torvalds init_waitqueue_head(&hdev->req_wait_q); 915a6a67efdSThomas Gleixner mutex_init(&hdev->req_lock); 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds inquiry_cache_init(hdev); 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds hci_conn_hash_init(hdev); 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 9221da177e4SLinus Torvalds 9231da177e4SLinus Torvalds atomic_set(&hdev->promisc, 0); 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9261da177e4SLinus Torvalds 9271da177e4SLinus Torvalds hci_register_sysfs(hdev); 9281da177e4SLinus Torvalds 929611b30f7SMarcel Holtmann hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, 930611b30f7SMarcel Holtmann RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); 931611b30f7SMarcel Holtmann if (hdev->rfkill) { 932611b30f7SMarcel Holtmann if (rfkill_register(hdev->rfkill) < 0) { 933611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 934611b30f7SMarcel Holtmann hdev->rfkill = NULL; 935611b30f7SMarcel Holtmann } 936611b30f7SMarcel Holtmann } 937611b30f7SMarcel Holtmann 9381da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_REG); 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds return id; 9411da177e4SLinus Torvalds } 9421da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_dev); 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds /* Unregister HCI device */ 9451da177e4SLinus Torvalds int hci_unregister_dev(struct hci_dev *hdev) 9461da177e4SLinus Torvalds { 947ef222013SMarcel Holtmann int i; 948ef222013SMarcel Holtmann 9491da177e4SLinus Torvalds BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 9521da177e4SLinus Torvalds list_del(&hdev->list); 9531da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9541da177e4SLinus Torvalds 9551da177e4SLinus Torvalds hci_dev_do_close(hdev); 9561da177e4SLinus Torvalds 957ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 958ef222013SMarcel Holtmann kfree_skb(hdev->reassembly[i]); 959ef222013SMarcel Holtmann 9601da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UNREG); 9611da177e4SLinus Torvalds 962611b30f7SMarcel Holtmann if (hdev->rfkill) { 963611b30f7SMarcel Holtmann rfkill_unregister(hdev->rfkill); 964611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 965611b30f7SMarcel Holtmann } 966611b30f7SMarcel Holtmann 967147e2d59SDave Young hci_unregister_sysfs(hdev); 968147e2d59SDave Young 9691da177e4SLinus Torvalds __hci_dev_put(hdev); 970ef222013SMarcel Holtmann 9711da177e4SLinus Torvalds return 0; 9721da177e4SLinus Torvalds } 9731da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_dev); 9741da177e4SLinus Torvalds 9751da177e4SLinus Torvalds /* Suspend HCI device */ 9761da177e4SLinus Torvalds int hci_suspend_dev(struct hci_dev *hdev) 9771da177e4SLinus Torvalds { 9781da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_SUSPEND); 9791da177e4SLinus Torvalds return 0; 9801da177e4SLinus Torvalds } 9811da177e4SLinus Torvalds EXPORT_SYMBOL(hci_suspend_dev); 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvalds /* Resume HCI device */ 9841da177e4SLinus Torvalds int hci_resume_dev(struct hci_dev *hdev) 9851da177e4SLinus Torvalds { 9861da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_RESUME); 9871da177e4SLinus Torvalds return 0; 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds EXPORT_SYMBOL(hci_resume_dev); 9901da177e4SLinus Torvalds 99176bca880SMarcel Holtmann /* Receive frame from HCI drivers */ 99276bca880SMarcel Holtmann int hci_recv_frame(struct sk_buff *skb) 99376bca880SMarcel Holtmann { 99476bca880SMarcel Holtmann struct hci_dev *hdev = (struct hci_dev *) skb->dev; 99576bca880SMarcel Holtmann if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 99676bca880SMarcel Holtmann && !test_bit(HCI_INIT, &hdev->flags))) { 99776bca880SMarcel Holtmann kfree_skb(skb); 99876bca880SMarcel Holtmann return -ENXIO; 99976bca880SMarcel Holtmann } 100076bca880SMarcel Holtmann 100176bca880SMarcel Holtmann /* Incomming skb */ 100276bca880SMarcel Holtmann bt_cb(skb)->incoming = 1; 100376bca880SMarcel Holtmann 100476bca880SMarcel Holtmann /* Time stamp */ 100576bca880SMarcel Holtmann __net_timestamp(skb); 100676bca880SMarcel Holtmann 100776bca880SMarcel Holtmann /* Queue frame for rx task */ 100876bca880SMarcel Holtmann skb_queue_tail(&hdev->rx_q, skb); 1009*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->rx_task); 1010*c78ae283SMarcel Holtmann 101176bca880SMarcel Holtmann return 0; 101276bca880SMarcel Holtmann } 101376bca880SMarcel Holtmann EXPORT_SYMBOL(hci_recv_frame); 101476bca880SMarcel Holtmann 1015ef222013SMarcel Holtmann /* Receive packet type fragment */ 1016ef222013SMarcel Holtmann #define __reassembly(hdev, type) ((hdev)->reassembly[(type) - 2]) 1017ef222013SMarcel Holtmann 1018ef222013SMarcel Holtmann int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 1019ef222013SMarcel Holtmann { 1020ef222013SMarcel Holtmann if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) 1021ef222013SMarcel Holtmann return -EILSEQ; 1022ef222013SMarcel Holtmann 1023ef222013SMarcel Holtmann while (count) { 1024ef222013SMarcel Holtmann struct sk_buff *skb = __reassembly(hdev, type); 1025ef222013SMarcel Holtmann struct { int expect; } *scb; 1026ef222013SMarcel Holtmann int len = 0; 1027ef222013SMarcel Holtmann 1028ef222013SMarcel Holtmann if (!skb) { 1029ef222013SMarcel Holtmann /* Start of the frame */ 1030ef222013SMarcel Holtmann 1031ef222013SMarcel Holtmann switch (type) { 1032ef222013SMarcel Holtmann case HCI_EVENT_PKT: 1033ef222013SMarcel Holtmann if (count >= HCI_EVENT_HDR_SIZE) { 1034ef222013SMarcel Holtmann struct hci_event_hdr *h = data; 1035ef222013SMarcel Holtmann len = HCI_EVENT_HDR_SIZE + h->plen; 1036ef222013SMarcel Holtmann } else 1037ef222013SMarcel Holtmann return -EILSEQ; 1038ef222013SMarcel Holtmann break; 1039ef222013SMarcel Holtmann 1040ef222013SMarcel Holtmann case HCI_ACLDATA_PKT: 1041ef222013SMarcel Holtmann if (count >= HCI_ACL_HDR_SIZE) { 1042ef222013SMarcel Holtmann struct hci_acl_hdr *h = data; 1043ef222013SMarcel Holtmann len = HCI_ACL_HDR_SIZE + __le16_to_cpu(h->dlen); 1044ef222013SMarcel Holtmann } else 1045ef222013SMarcel Holtmann return -EILSEQ; 1046ef222013SMarcel Holtmann break; 1047ef222013SMarcel Holtmann 1048ef222013SMarcel Holtmann case HCI_SCODATA_PKT: 1049ef222013SMarcel Holtmann if (count >= HCI_SCO_HDR_SIZE) { 1050ef222013SMarcel Holtmann struct hci_sco_hdr *h = data; 1051ef222013SMarcel Holtmann len = HCI_SCO_HDR_SIZE + h->dlen; 1052ef222013SMarcel Holtmann } else 1053ef222013SMarcel Holtmann return -EILSEQ; 1054ef222013SMarcel Holtmann break; 1055ef222013SMarcel Holtmann } 1056ef222013SMarcel Holtmann 1057ef222013SMarcel Holtmann skb = bt_skb_alloc(len, GFP_ATOMIC); 1058ef222013SMarcel Holtmann if (!skb) { 1059ef222013SMarcel Holtmann BT_ERR("%s no memory for packet", hdev->name); 1060ef222013SMarcel Holtmann return -ENOMEM; 1061ef222013SMarcel Holtmann } 1062ef222013SMarcel Holtmann 1063ef222013SMarcel Holtmann skb->dev = (void *) hdev; 1064ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1065ef222013SMarcel Holtmann 1066ef222013SMarcel Holtmann __reassembly(hdev, type) = skb; 1067ef222013SMarcel Holtmann 1068ef222013SMarcel Holtmann scb = (void *) skb->cb; 1069ef222013SMarcel Holtmann scb->expect = len; 1070ef222013SMarcel Holtmann } else { 1071ef222013SMarcel Holtmann /* Continuation */ 1072ef222013SMarcel Holtmann 1073ef222013SMarcel Holtmann scb = (void *) skb->cb; 1074ef222013SMarcel Holtmann len = scb->expect; 1075ef222013SMarcel Holtmann } 1076ef222013SMarcel Holtmann 1077ef222013SMarcel Holtmann len = min(len, count); 1078ef222013SMarcel Holtmann 1079ef222013SMarcel Holtmann memcpy(skb_put(skb, len), data, len); 1080ef222013SMarcel Holtmann 1081ef222013SMarcel Holtmann scb->expect -= len; 1082ef222013SMarcel Holtmann 1083ef222013SMarcel Holtmann if (scb->expect == 0) { 1084ef222013SMarcel Holtmann /* Complete frame */ 1085ef222013SMarcel Holtmann 1086ef222013SMarcel Holtmann __reassembly(hdev, type) = NULL; 1087ef222013SMarcel Holtmann 1088ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1089ef222013SMarcel Holtmann hci_recv_frame(skb); 1090ef222013SMarcel Holtmann } 1091ef222013SMarcel Holtmann 1092ef222013SMarcel Holtmann count -= len; data += len; 1093ef222013SMarcel Holtmann } 1094ef222013SMarcel Holtmann 1095ef222013SMarcel Holtmann return 0; 1096ef222013SMarcel Holtmann } 1097ef222013SMarcel Holtmann EXPORT_SYMBOL(hci_recv_fragment); 1098ef222013SMarcel Holtmann 10991da177e4SLinus Torvalds /* ---- Interface to upper protocols ---- */ 11001da177e4SLinus Torvalds 11011da177e4SLinus Torvalds /* Register/Unregister protocols. 11021da177e4SLinus Torvalds * hci_task_lock is used to ensure that no tasks are running. */ 11031da177e4SLinus Torvalds int hci_register_proto(struct hci_proto *hp) 11041da177e4SLinus Torvalds { 11051da177e4SLinus Torvalds int err = 0; 11061da177e4SLinus Torvalds 11071da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11101da177e4SLinus Torvalds return -EINVAL; 11111da177e4SLinus Torvalds 11121da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11131da177e4SLinus Torvalds 11141da177e4SLinus Torvalds if (!hci_proto[hp->id]) 11151da177e4SLinus Torvalds hci_proto[hp->id] = hp; 11161da177e4SLinus Torvalds else 11171da177e4SLinus Torvalds err = -EEXIST; 11181da177e4SLinus Torvalds 11191da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvalds return err; 11221da177e4SLinus Torvalds } 11231da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_proto); 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds int hci_unregister_proto(struct hci_proto *hp) 11261da177e4SLinus Torvalds { 11271da177e4SLinus Torvalds int err = 0; 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11321da177e4SLinus Torvalds return -EINVAL; 11331da177e4SLinus Torvalds 11341da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds if (hci_proto[hp->id]) 11371da177e4SLinus Torvalds hci_proto[hp->id] = NULL; 11381da177e4SLinus Torvalds else 11391da177e4SLinus Torvalds err = -ENOENT; 11401da177e4SLinus Torvalds 11411da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds return err; 11441da177e4SLinus Torvalds } 11451da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_proto); 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds int hci_register_cb(struct hci_cb *cb) 11481da177e4SLinus Torvalds { 11491da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11521da177e4SLinus Torvalds list_add(&cb->list, &hci_cb_list); 11531da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds return 0; 11561da177e4SLinus Torvalds } 11571da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_cb); 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds int hci_unregister_cb(struct hci_cb *cb) 11601da177e4SLinus Torvalds { 11611da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11621da177e4SLinus Torvalds 11631da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11641da177e4SLinus Torvalds list_del(&cb->list); 11651da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11661da177e4SLinus Torvalds 11671da177e4SLinus Torvalds return 0; 11681da177e4SLinus Torvalds } 11691da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_cb); 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds static int hci_send_frame(struct sk_buff *skb) 11721da177e4SLinus Torvalds { 11731da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) skb->dev; 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds if (!hdev) { 11761da177e4SLinus Torvalds kfree_skb(skb); 11771da177e4SLinus Torvalds return -ENODEV; 11781da177e4SLinus Torvalds } 11791da177e4SLinus Torvalds 11800d48d939SMarcel Holtmann BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); 11811da177e4SLinus Torvalds 11821da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 11831da177e4SLinus Torvalds /* Time stamp */ 1184a61bbcf2SPatrick McHardy __net_timestamp(skb); 11851da177e4SLinus Torvalds 11861da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 11871da177e4SLinus Torvalds } 11881da177e4SLinus Torvalds 11891da177e4SLinus Torvalds /* Get rid of skb owner, prior to sending to the driver. */ 11901da177e4SLinus Torvalds skb_orphan(skb); 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds return hdev->send(skb); 11931da177e4SLinus Torvalds } 11941da177e4SLinus Torvalds 11951da177e4SLinus Torvalds /* Send HCI command */ 1196a9de9248SMarcel Holtmann int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) 11971da177e4SLinus Torvalds { 11981da177e4SLinus Torvalds int len = HCI_COMMAND_HDR_SIZE + plen; 11991da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12001da177e4SLinus Torvalds struct sk_buff *skb; 12011da177e4SLinus Torvalds 1202a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds skb = bt_skb_alloc(len, GFP_ATOMIC); 12051da177e4SLinus Torvalds if (!skb) { 1206ef222013SMarcel Holtmann BT_ERR("%s no memory for command", hdev->name); 12071da177e4SLinus Torvalds return -ENOMEM; 12081da177e4SLinus Torvalds } 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); 1211a9de9248SMarcel Holtmann hdr->opcode = cpu_to_le16(opcode); 12121da177e4SLinus Torvalds hdr->plen = plen; 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds if (plen) 12151da177e4SLinus Torvalds memcpy(skb_put(skb, plen), param, plen); 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds BT_DBG("skb len %d", skb->len); 12181da177e4SLinus Torvalds 12190d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 12201da177e4SLinus Torvalds skb->dev = (void *) hdev; 1221*c78ae283SMarcel Holtmann 12221da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 1223*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 12241da177e4SLinus Torvalds 12251da177e4SLinus Torvalds return 0; 12261da177e4SLinus Torvalds } 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds /* Get data from the previously sent command */ 1229a9de9248SMarcel Holtmann void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) 12301da177e4SLinus Torvalds { 12311da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12321da177e4SLinus Torvalds 12331da177e4SLinus Torvalds if (!hdev->sent_cmd) 12341da177e4SLinus Torvalds return NULL; 12351da177e4SLinus Torvalds 12361da177e4SLinus Torvalds hdr = (void *) hdev->sent_cmd->data; 12371da177e4SLinus Torvalds 1238a9de9248SMarcel Holtmann if (hdr->opcode != cpu_to_le16(opcode)) 12391da177e4SLinus Torvalds return NULL; 12401da177e4SLinus Torvalds 1241a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x", hdev->name, opcode); 12421da177e4SLinus Torvalds 12431da177e4SLinus Torvalds return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; 12441da177e4SLinus Torvalds } 12451da177e4SLinus Torvalds 12461da177e4SLinus Torvalds /* Send ACL data */ 12471da177e4SLinus Torvalds static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) 12481da177e4SLinus Torvalds { 12491da177e4SLinus Torvalds struct hci_acl_hdr *hdr; 12501da177e4SLinus Torvalds int len = skb->len; 12511da177e4SLinus Torvalds 1252badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_ACL_HDR_SIZE); 1253badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 12549c70220bSArnaldo Carvalho de Melo hdr = (struct hci_acl_hdr *)skb_transport_header(skb); 1255aca3192cSYOSHIFUJI Hideaki hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); 1256aca3192cSYOSHIFUJI Hideaki hdr->dlen = cpu_to_le16(len); 12571da177e4SLinus Torvalds } 12581da177e4SLinus Torvalds 12591da177e4SLinus Torvalds int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags) 12601da177e4SLinus Torvalds { 12611da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 12621da177e4SLinus Torvalds struct sk_buff *list; 12631da177e4SLinus Torvalds 12641da177e4SLinus Torvalds BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); 12651da177e4SLinus Torvalds 12661da177e4SLinus Torvalds skb->dev = (void *) hdev; 12670d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 12681da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_START); 12691da177e4SLinus Torvalds 12701da177e4SLinus Torvalds if (!(list = skb_shinfo(skb)->frag_list)) { 12711da177e4SLinus Torvalds /* Non fragmented */ 12721da177e4SLinus Torvalds BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 12751da177e4SLinus Torvalds } else { 12761da177e4SLinus Torvalds /* Fragmented */ 12771da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 12781da177e4SLinus Torvalds 12791da177e4SLinus Torvalds skb_shinfo(skb)->frag_list = NULL; 12801da177e4SLinus Torvalds 12811da177e4SLinus Torvalds /* Queue all fragments atomically */ 12821da177e4SLinus Torvalds spin_lock_bh(&conn->data_q.lock); 12831da177e4SLinus Torvalds 12841da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 12851da177e4SLinus Torvalds do { 12861da177e4SLinus Torvalds skb = list; list = list->next; 12871da177e4SLinus Torvalds 12881da177e4SLinus Torvalds skb->dev = (void *) hdev; 12890d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 12901da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_CONT); 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 12951da177e4SLinus Torvalds } while (list); 12961da177e4SLinus Torvalds 12971da177e4SLinus Torvalds spin_unlock_bh(&conn->data_q.lock); 12981da177e4SLinus Torvalds } 12991da177e4SLinus Torvalds 1300*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 1301*c78ae283SMarcel Holtmann 13021da177e4SLinus Torvalds return 0; 13031da177e4SLinus Torvalds } 13041da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_acl); 13051da177e4SLinus Torvalds 13061da177e4SLinus Torvalds /* Send SCO data */ 13071da177e4SLinus Torvalds int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) 13081da177e4SLinus Torvalds { 13091da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 13101da177e4SLinus Torvalds struct hci_sco_hdr hdr; 13111da177e4SLinus Torvalds 13121da177e4SLinus Torvalds BT_DBG("%s len %d", hdev->name, skb->len); 13131da177e4SLinus Torvalds 13141da177e4SLinus Torvalds if (skb->len > hdev->sco_mtu) { 13151da177e4SLinus Torvalds kfree_skb(skb); 13161da177e4SLinus Torvalds return -EINVAL; 13171da177e4SLinus Torvalds } 13181da177e4SLinus Torvalds 1319aca3192cSYOSHIFUJI Hideaki hdr.handle = cpu_to_le16(conn->handle); 13201da177e4SLinus Torvalds hdr.dlen = skb->len; 13211da177e4SLinus Torvalds 1322badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_SCO_HDR_SIZE); 1323badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 13249c70220bSArnaldo Carvalho de Melo memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); 13251da177e4SLinus Torvalds 13261da177e4SLinus Torvalds skb->dev = (void *) hdev; 13270d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 1328*c78ae283SMarcel Holtmann 13291da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 1330*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 1331*c78ae283SMarcel Holtmann 13321da177e4SLinus Torvalds return 0; 13331da177e4SLinus Torvalds } 13341da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_sco); 13351da177e4SLinus Torvalds 13361da177e4SLinus Torvalds /* ---- HCI TX task (outgoing data) ---- */ 13371da177e4SLinus Torvalds 13381da177e4SLinus Torvalds /* HCI Connection scheduler */ 13391da177e4SLinus Torvalds static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) 13401da177e4SLinus Torvalds { 13411da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13421da177e4SLinus Torvalds struct hci_conn *conn = NULL; 13431da177e4SLinus Torvalds int num = 0, min = ~0; 13441da177e4SLinus Torvalds struct list_head *p; 13451da177e4SLinus Torvalds 13461da177e4SLinus Torvalds /* We don't have to lock device here. Connections are always 13471da177e4SLinus Torvalds * added and removed with TX task disabled. */ 13481da177e4SLinus Torvalds list_for_each(p, &h->list) { 13491da177e4SLinus Torvalds struct hci_conn *c; 13501da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13511da177e4SLinus Torvalds 1352769be974SMarcel Holtmann if (c->type != type || skb_queue_empty(&c->data_q)) 13531da177e4SLinus Torvalds continue; 1354769be974SMarcel Holtmann 1355769be974SMarcel Holtmann if (c->state != BT_CONNECTED && c->state != BT_CONFIG) 1356769be974SMarcel Holtmann continue; 1357769be974SMarcel Holtmann 13581da177e4SLinus Torvalds num++; 13591da177e4SLinus Torvalds 13601da177e4SLinus Torvalds if (c->sent < min) { 13611da177e4SLinus Torvalds min = c->sent; 13621da177e4SLinus Torvalds conn = c; 13631da177e4SLinus Torvalds } 13641da177e4SLinus Torvalds } 13651da177e4SLinus Torvalds 13661da177e4SLinus Torvalds if (conn) { 13671da177e4SLinus Torvalds int cnt = (type == ACL_LINK ? hdev->acl_cnt : hdev->sco_cnt); 13681da177e4SLinus Torvalds int q = cnt / num; 13691da177e4SLinus Torvalds *quote = q ? q : 1; 13701da177e4SLinus Torvalds } else 13711da177e4SLinus Torvalds *quote = 0; 13721da177e4SLinus Torvalds 13731da177e4SLinus Torvalds BT_DBG("conn %p quote %d", conn, *quote); 13741da177e4SLinus Torvalds return conn; 13751da177e4SLinus Torvalds } 13761da177e4SLinus Torvalds 13771da177e4SLinus Torvalds static inline void hci_acl_tx_to(struct hci_dev *hdev) 13781da177e4SLinus Torvalds { 13791da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13801da177e4SLinus Torvalds struct list_head *p; 13811da177e4SLinus Torvalds struct hci_conn *c; 13821da177e4SLinus Torvalds 13831da177e4SLinus Torvalds BT_ERR("%s ACL tx timeout", hdev->name); 13841da177e4SLinus Torvalds 13851da177e4SLinus Torvalds /* Kill stalled connections */ 13861da177e4SLinus Torvalds list_for_each(p, &h->list) { 13871da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13881da177e4SLinus Torvalds if (c->type == ACL_LINK && c->sent) { 13891da177e4SLinus Torvalds BT_ERR("%s killing stalled ACL connection %s", 13901da177e4SLinus Torvalds hdev->name, batostr(&c->dst)); 13911da177e4SLinus Torvalds hci_acl_disconn(c, 0x13); 13921da177e4SLinus Torvalds } 13931da177e4SLinus Torvalds } 13941da177e4SLinus Torvalds } 13951da177e4SLinus Torvalds 13961da177e4SLinus Torvalds static inline void hci_sched_acl(struct hci_dev *hdev) 13971da177e4SLinus Torvalds { 13981da177e4SLinus Torvalds struct hci_conn *conn; 13991da177e4SLinus Torvalds struct sk_buff *skb; 14001da177e4SLinus Torvalds int quote; 14011da177e4SLinus Torvalds 14021da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 14051da177e4SLinus Torvalds /* ACL tx timeout must be longer than maximum 14061da177e4SLinus Torvalds * link supervision timeout (40.9 seconds) */ 140782453021SS.Çağlar Onur if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) 14081da177e4SLinus Torvalds hci_acl_tx_to(hdev); 14091da177e4SLinus Torvalds } 14101da177e4SLinus Torvalds 14111da177e4SLinus Torvalds while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { 14121da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14131da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 141404837f64SMarcel Holtmann 141504837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 141604837f64SMarcel Holtmann 14171da177e4SLinus Torvalds hci_send_frame(skb); 14181da177e4SLinus Torvalds hdev->acl_last_tx = jiffies; 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds hdev->acl_cnt--; 14211da177e4SLinus Torvalds conn->sent++; 14221da177e4SLinus Torvalds } 14231da177e4SLinus Torvalds } 14241da177e4SLinus Torvalds } 14251da177e4SLinus Torvalds 14261da177e4SLinus Torvalds /* Schedule SCO */ 14271da177e4SLinus Torvalds static inline void hci_sched_sco(struct hci_dev *hdev) 14281da177e4SLinus Torvalds { 14291da177e4SLinus Torvalds struct hci_conn *conn; 14301da177e4SLinus Torvalds struct sk_buff *skb; 14311da177e4SLinus Torvalds int quote; 14321da177e4SLinus Torvalds 14331da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14341da177e4SLinus Torvalds 14351da177e4SLinus Torvalds while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { 14361da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14371da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 14381da177e4SLinus Torvalds hci_send_frame(skb); 14391da177e4SLinus Torvalds 14401da177e4SLinus Torvalds conn->sent++; 14411da177e4SLinus Torvalds if (conn->sent == ~0) 14421da177e4SLinus Torvalds conn->sent = 0; 14431da177e4SLinus Torvalds } 14441da177e4SLinus Torvalds } 14451da177e4SLinus Torvalds } 14461da177e4SLinus Torvalds 1447b6a0dc82SMarcel Holtmann static inline void hci_sched_esco(struct hci_dev *hdev) 1448b6a0dc82SMarcel Holtmann { 1449b6a0dc82SMarcel Holtmann struct hci_conn *conn; 1450b6a0dc82SMarcel Holtmann struct sk_buff *skb; 1451b6a0dc82SMarcel Holtmann int quote; 1452b6a0dc82SMarcel Holtmann 1453b6a0dc82SMarcel Holtmann BT_DBG("%s", hdev->name); 1454b6a0dc82SMarcel Holtmann 1455b6a0dc82SMarcel Holtmann while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { 1456b6a0dc82SMarcel Holtmann while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 1457b6a0dc82SMarcel Holtmann BT_DBG("skb %p len %d", skb, skb->len); 1458b6a0dc82SMarcel Holtmann hci_send_frame(skb); 1459b6a0dc82SMarcel Holtmann 1460b6a0dc82SMarcel Holtmann conn->sent++; 1461b6a0dc82SMarcel Holtmann if (conn->sent == ~0) 1462b6a0dc82SMarcel Holtmann conn->sent = 0; 1463b6a0dc82SMarcel Holtmann } 1464b6a0dc82SMarcel Holtmann } 1465b6a0dc82SMarcel Holtmann } 1466b6a0dc82SMarcel Holtmann 14671da177e4SLinus Torvalds static void hci_tx_task(unsigned long arg) 14681da177e4SLinus Torvalds { 14691da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 14701da177e4SLinus Torvalds struct sk_buff *skb; 14711da177e4SLinus Torvalds 14721da177e4SLinus Torvalds read_lock(&hci_task_lock); 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds BT_DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt); 14751da177e4SLinus Torvalds 14761da177e4SLinus Torvalds /* Schedule queues and send stuff to HCI driver */ 14771da177e4SLinus Torvalds 14781da177e4SLinus Torvalds hci_sched_acl(hdev); 14791da177e4SLinus Torvalds 14801da177e4SLinus Torvalds hci_sched_sco(hdev); 14811da177e4SLinus Torvalds 1482b6a0dc82SMarcel Holtmann hci_sched_esco(hdev); 1483b6a0dc82SMarcel Holtmann 14841da177e4SLinus Torvalds /* Send next queued raw (unknown type) packet */ 14851da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->raw_q))) 14861da177e4SLinus Torvalds hci_send_frame(skb); 14871da177e4SLinus Torvalds 14881da177e4SLinus Torvalds read_unlock(&hci_task_lock); 14891da177e4SLinus Torvalds } 14901da177e4SLinus Torvalds 14911da177e4SLinus Torvalds /* ----- HCI RX task (incoming data proccessing) ----- */ 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds /* ACL data packet */ 14941da177e4SLinus Torvalds static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) 14951da177e4SLinus Torvalds { 14961da177e4SLinus Torvalds struct hci_acl_hdr *hdr = (void *) skb->data; 14971da177e4SLinus Torvalds struct hci_conn *conn; 14981da177e4SLinus Torvalds __u16 handle, flags; 14991da177e4SLinus Torvalds 15001da177e4SLinus Torvalds skb_pull(skb, HCI_ACL_HDR_SIZE); 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15031da177e4SLinus Torvalds flags = hci_flags(handle); 15041da177e4SLinus Torvalds handle = hci_handle(handle); 15051da177e4SLinus Torvalds 15061da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds hdev->stat.acl_rx++; 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvalds hci_dev_lock(hdev); 15111da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15121da177e4SLinus Torvalds hci_dev_unlock(hdev); 15131da177e4SLinus Torvalds 15141da177e4SLinus Torvalds if (conn) { 15151da177e4SLinus Torvalds register struct hci_proto *hp; 15161da177e4SLinus Torvalds 151704837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 151804837f64SMarcel Holtmann 15191da177e4SLinus Torvalds /* Send to upper protocol */ 15201da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_L2CAP]) && hp->recv_acldata) { 15211da177e4SLinus Torvalds hp->recv_acldata(conn, skb, flags); 15221da177e4SLinus Torvalds return; 15231da177e4SLinus Torvalds } 15241da177e4SLinus Torvalds } else { 15251da177e4SLinus Torvalds BT_ERR("%s ACL packet for unknown connection handle %d", 15261da177e4SLinus Torvalds hdev->name, handle); 15271da177e4SLinus Torvalds } 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds kfree_skb(skb); 15301da177e4SLinus Torvalds } 15311da177e4SLinus Torvalds 15321da177e4SLinus Torvalds /* SCO data packet */ 15331da177e4SLinus Torvalds static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) 15341da177e4SLinus Torvalds { 15351da177e4SLinus Torvalds struct hci_sco_hdr *hdr = (void *) skb->data; 15361da177e4SLinus Torvalds struct hci_conn *conn; 15371da177e4SLinus Torvalds __u16 handle; 15381da177e4SLinus Torvalds 15391da177e4SLinus Torvalds skb_pull(skb, HCI_SCO_HDR_SIZE); 15401da177e4SLinus Torvalds 15411da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvalds hdev->stat.sco_rx++; 15461da177e4SLinus Torvalds 15471da177e4SLinus Torvalds hci_dev_lock(hdev); 15481da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15491da177e4SLinus Torvalds hci_dev_unlock(hdev); 15501da177e4SLinus Torvalds 15511da177e4SLinus Torvalds if (conn) { 15521da177e4SLinus Torvalds register struct hci_proto *hp; 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds /* Send to upper protocol */ 15551da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_SCO]) && hp->recv_scodata) { 15561da177e4SLinus Torvalds hp->recv_scodata(conn, skb); 15571da177e4SLinus Torvalds return; 15581da177e4SLinus Torvalds } 15591da177e4SLinus Torvalds } else { 15601da177e4SLinus Torvalds BT_ERR("%s SCO packet for unknown connection handle %d", 15611da177e4SLinus Torvalds hdev->name, handle); 15621da177e4SLinus Torvalds } 15631da177e4SLinus Torvalds 15641da177e4SLinus Torvalds kfree_skb(skb); 15651da177e4SLinus Torvalds } 15661da177e4SLinus Torvalds 15676516455dSMarcel Holtmann static void hci_rx_task(unsigned long arg) 15681da177e4SLinus Torvalds { 15691da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 15701da177e4SLinus Torvalds struct sk_buff *skb; 15711da177e4SLinus Torvalds 15721da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 15731da177e4SLinus Torvalds 15741da177e4SLinus Torvalds read_lock(&hci_task_lock); 15751da177e4SLinus Torvalds 15761da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->rx_q))) { 15771da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 15781da177e4SLinus Torvalds /* Send copy to the sockets */ 15791da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 15801da177e4SLinus Torvalds } 15811da177e4SLinus Torvalds 15821da177e4SLinus Torvalds if (test_bit(HCI_RAW, &hdev->flags)) { 15831da177e4SLinus Torvalds kfree_skb(skb); 15841da177e4SLinus Torvalds continue; 15851da177e4SLinus Torvalds } 15861da177e4SLinus Torvalds 15871da177e4SLinus Torvalds if (test_bit(HCI_INIT, &hdev->flags)) { 15881da177e4SLinus Torvalds /* Don't process data packets in this states. */ 15890d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 15901da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 15911da177e4SLinus Torvalds case HCI_SCODATA_PKT: 15921da177e4SLinus Torvalds kfree_skb(skb); 15931da177e4SLinus Torvalds continue; 15943ff50b79SStephen Hemminger } 15951da177e4SLinus Torvalds } 15961da177e4SLinus Torvalds 15971da177e4SLinus Torvalds /* Process frame */ 15980d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 15991da177e4SLinus Torvalds case HCI_EVENT_PKT: 16001da177e4SLinus Torvalds hci_event_packet(hdev, skb); 16011da177e4SLinus Torvalds break; 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 16041da177e4SLinus Torvalds BT_DBG("%s ACL data packet", hdev->name); 16051da177e4SLinus Torvalds hci_acldata_packet(hdev, skb); 16061da177e4SLinus Torvalds break; 16071da177e4SLinus Torvalds 16081da177e4SLinus Torvalds case HCI_SCODATA_PKT: 16091da177e4SLinus Torvalds BT_DBG("%s SCO data packet", hdev->name); 16101da177e4SLinus Torvalds hci_scodata_packet(hdev, skb); 16111da177e4SLinus Torvalds break; 16121da177e4SLinus Torvalds 16131da177e4SLinus Torvalds default: 16141da177e4SLinus Torvalds kfree_skb(skb); 16151da177e4SLinus Torvalds break; 16161da177e4SLinus Torvalds } 16171da177e4SLinus Torvalds } 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvalds read_unlock(&hci_task_lock); 16201da177e4SLinus Torvalds } 16211da177e4SLinus Torvalds 16221da177e4SLinus Torvalds static void hci_cmd_task(unsigned long arg) 16231da177e4SLinus Torvalds { 16241da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 16251da177e4SLinus Torvalds struct sk_buff *skb; 16261da177e4SLinus Torvalds 16271da177e4SLinus Torvalds BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); 16281da177e4SLinus Torvalds 162982453021SS.Çağlar Onur if (!atomic_read(&hdev->cmd_cnt) && time_after(jiffies, hdev->cmd_last_tx + HZ)) { 16301da177e4SLinus Torvalds BT_ERR("%s command tx timeout", hdev->name); 16311da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 16321da177e4SLinus Torvalds } 16331da177e4SLinus Torvalds 16341da177e4SLinus Torvalds /* Send queued commands */ 16351da177e4SLinus Torvalds if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) { 16361da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 16371da177e4SLinus Torvalds 16381da177e4SLinus Torvalds if ((hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC))) { 16391da177e4SLinus Torvalds atomic_dec(&hdev->cmd_cnt); 16401da177e4SLinus Torvalds hci_send_frame(skb); 16411da177e4SLinus Torvalds hdev->cmd_last_tx = jiffies; 16421da177e4SLinus Torvalds } else { 16431da177e4SLinus Torvalds skb_queue_head(&hdev->cmd_q, skb); 1644*c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 16451da177e4SLinus Torvalds } 16461da177e4SLinus Torvalds } 16471da177e4SLinus Torvalds } 1648