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; 196c78ae283SMarcel Holtmann 1971da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 198c78ae283SMarcel 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 494943da25dSMarcel Holtmann /* Treat all non BR/EDR controllers as raw devices for now */ 495943da25dSMarcel Holtmann if (hdev->dev_type != HCI_BREDR) 496943da25dSMarcel Holtmann set_bit(HCI_RAW, &hdev->flags); 497943da25dSMarcel Holtmann 4981da177e4SLinus Torvalds if (hdev->open(hdev)) { 4991da177e4SLinus Torvalds ret = -EIO; 5001da177e4SLinus Torvalds goto done; 5011da177e4SLinus Torvalds } 5021da177e4SLinus Torvalds 5031da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5041da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5051da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 5061da177e4SLinus Torvalds 5071da177e4SLinus Torvalds //__hci_request(hdev, hci_reset_req, 0, HZ); 50804837f64SMarcel Holtmann ret = __hci_request(hdev, hci_init_req, 0, 50904837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 5101da177e4SLinus Torvalds 5111da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5121da177e4SLinus Torvalds } 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds if (!ret) { 5151da177e4SLinus Torvalds hci_dev_hold(hdev); 5161da177e4SLinus Torvalds set_bit(HCI_UP, &hdev->flags); 5171da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UP); 5181da177e4SLinus Torvalds } else { 5191da177e4SLinus Torvalds /* Init failed, cleanup */ 5201da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5211da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5221da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5251da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds if (hdev->flush) 5281da177e4SLinus Torvalds hdev->flush(hdev); 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds if (hdev->sent_cmd) { 5311da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5321da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5331da177e4SLinus Torvalds } 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds hdev->close(hdev); 5361da177e4SLinus Torvalds hdev->flags = 0; 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvalds done: 5401da177e4SLinus Torvalds hci_req_unlock(hdev); 5411da177e4SLinus Torvalds hci_dev_put(hdev); 5421da177e4SLinus Torvalds return ret; 5431da177e4SLinus Torvalds } 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds static int hci_dev_do_close(struct hci_dev *hdev) 5461da177e4SLinus Torvalds { 5471da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 5481da177e4SLinus Torvalds 5491da177e4SLinus Torvalds hci_req_cancel(hdev, ENODEV); 5501da177e4SLinus Torvalds hci_req_lock(hdev); 5511da177e4SLinus Torvalds 5521da177e4SLinus Torvalds if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { 5531da177e4SLinus Torvalds hci_req_unlock(hdev); 5541da177e4SLinus Torvalds return 0; 5551da177e4SLinus Torvalds } 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds /* Kill RX and TX tasks */ 5581da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5591da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 5621da177e4SLinus Torvalds inquiry_cache_flush(hdev); 5631da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 5641da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_DOWN); 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds if (hdev->flush) 5691da177e4SLinus Torvalds hdev->flush(hdev); 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds /* Reset device */ 5721da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5731da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5741da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5751da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 57604837f64SMarcel Holtmann __hci_request(hdev, hci_reset_req, 0, 57704837f64SMarcel Holtmann msecs_to_jiffies(250)); 5781da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds /* Kill cmd task */ 5821da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5831da177e4SLinus Torvalds 5841da177e4SLinus Torvalds /* Drop queues */ 5851da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5861da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5871da177e4SLinus Torvalds skb_queue_purge(&hdev->raw_q); 5881da177e4SLinus Torvalds 5891da177e4SLinus Torvalds /* Drop last sent command */ 5901da177e4SLinus Torvalds if (hdev->sent_cmd) { 5911da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5921da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds /* After this point our queues are empty 5961da177e4SLinus Torvalds * and no tasks are scheduled. */ 5971da177e4SLinus Torvalds hdev->close(hdev); 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds /* Clear flags */ 6001da177e4SLinus Torvalds hdev->flags = 0; 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds hci_req_unlock(hdev); 6031da177e4SLinus Torvalds 6041da177e4SLinus Torvalds hci_dev_put(hdev); 6051da177e4SLinus Torvalds return 0; 6061da177e4SLinus Torvalds } 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds int hci_dev_close(__u16 dev) 6091da177e4SLinus Torvalds { 6101da177e4SLinus Torvalds struct hci_dev *hdev; 6111da177e4SLinus Torvalds int err; 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6141da177e4SLinus Torvalds return -ENODEV; 6151da177e4SLinus Torvalds err = hci_dev_do_close(hdev); 6161da177e4SLinus Torvalds hci_dev_put(hdev); 6171da177e4SLinus Torvalds return err; 6181da177e4SLinus Torvalds } 6191da177e4SLinus Torvalds 6201da177e4SLinus Torvalds int hci_dev_reset(__u16 dev) 6211da177e4SLinus Torvalds { 6221da177e4SLinus Torvalds struct hci_dev *hdev; 6231da177e4SLinus Torvalds int ret = 0; 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6261da177e4SLinus Torvalds return -ENODEV; 6271da177e4SLinus Torvalds 6281da177e4SLinus Torvalds hci_req_lock(hdev); 6291da177e4SLinus Torvalds tasklet_disable(&hdev->tx_task); 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds if (!test_bit(HCI_UP, &hdev->flags)) 6321da177e4SLinus Torvalds goto done; 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds /* Drop queues */ 6351da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 6361da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 6391da177e4SLinus Torvalds inquiry_cache_flush(hdev); 6401da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 6411da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds if (hdev->flush) 6441da177e4SLinus Torvalds hdev->flush(hdev); 6451da177e4SLinus Torvalds 6461da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 6471da177e4SLinus Torvalds hdev->acl_cnt = 0; hdev->sco_cnt = 0; 6481da177e4SLinus Torvalds 6491da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) 65004837f64SMarcel Holtmann ret = __hci_request(hdev, hci_reset_req, 0, 65104837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds done: 6541da177e4SLinus Torvalds tasklet_enable(&hdev->tx_task); 6551da177e4SLinus Torvalds hci_req_unlock(hdev); 6561da177e4SLinus Torvalds hci_dev_put(hdev); 6571da177e4SLinus Torvalds return ret; 6581da177e4SLinus Torvalds } 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds int hci_dev_reset_stat(__u16 dev) 6611da177e4SLinus Torvalds { 6621da177e4SLinus Torvalds struct hci_dev *hdev; 6631da177e4SLinus Torvalds int ret = 0; 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6661da177e4SLinus Torvalds return -ENODEV; 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 6691da177e4SLinus Torvalds 6701da177e4SLinus Torvalds hci_dev_put(hdev); 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds return ret; 6731da177e4SLinus Torvalds } 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds int hci_dev_cmd(unsigned int cmd, void __user *arg) 6761da177e4SLinus Torvalds { 6771da177e4SLinus Torvalds struct hci_dev *hdev; 6781da177e4SLinus Torvalds struct hci_dev_req dr; 6791da177e4SLinus Torvalds int err = 0; 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvalds if (copy_from_user(&dr, arg, sizeof(dr))) 6821da177e4SLinus Torvalds return -EFAULT; 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dr.dev_id))) 6851da177e4SLinus Torvalds return -ENODEV; 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds switch (cmd) { 6881da177e4SLinus Torvalds case HCISETAUTH: 68904837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 69004837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6911da177e4SLinus Torvalds break; 6921da177e4SLinus Torvalds 6931da177e4SLinus Torvalds case HCISETENCRYPT: 6941da177e4SLinus Torvalds if (!lmp_encrypt_capable(hdev)) { 6951da177e4SLinus Torvalds err = -EOPNOTSUPP; 6961da177e4SLinus Torvalds break; 6971da177e4SLinus Torvalds } 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds if (!test_bit(HCI_AUTH, &hdev->flags)) { 7001da177e4SLinus Torvalds /* Auth must be enabled first */ 70104837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 70204837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7031da177e4SLinus Torvalds if (err) 7041da177e4SLinus Torvalds break; 7051da177e4SLinus Torvalds } 7061da177e4SLinus Torvalds 70704837f64SMarcel Holtmann err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, 70804837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7091da177e4SLinus Torvalds break; 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds case HCISETSCAN: 71204837f64SMarcel Holtmann err = hci_request(hdev, hci_scan_req, dr.dev_opt, 71304837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7141da177e4SLinus Torvalds break; 7151da177e4SLinus Torvalds 7161da177e4SLinus Torvalds case HCISETLINKPOL: 717e4e8e37cSMarcel Holtmann err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, 718e4e8e37cSMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7191da177e4SLinus Torvalds break; 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds case HCISETLINKMODE: 722e4e8e37cSMarcel Holtmann hdev->link_mode = ((__u16) dr.dev_opt) & 723e4e8e37cSMarcel Holtmann (HCI_LM_MASTER | HCI_LM_ACCEPT); 724e4e8e37cSMarcel Holtmann break; 725e4e8e37cSMarcel Holtmann 726e4e8e37cSMarcel Holtmann case HCISETPTYPE: 727e4e8e37cSMarcel Holtmann hdev->pkt_type = (__u16) dr.dev_opt; 7281da177e4SLinus Torvalds break; 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds case HCISETACLMTU: 7311da177e4SLinus Torvalds hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); 7321da177e4SLinus Torvalds hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); 7331da177e4SLinus Torvalds break; 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds case HCISETSCOMTU: 7361da177e4SLinus Torvalds hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); 7371da177e4SLinus Torvalds hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); 7381da177e4SLinus Torvalds break; 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds default: 7411da177e4SLinus Torvalds err = -EINVAL; 7421da177e4SLinus Torvalds break; 7431da177e4SLinus Torvalds } 744e4e8e37cSMarcel Holtmann 7451da177e4SLinus Torvalds hci_dev_put(hdev); 7461da177e4SLinus Torvalds return err; 7471da177e4SLinus Torvalds } 7481da177e4SLinus Torvalds 7491da177e4SLinus Torvalds int hci_get_dev_list(void __user *arg) 7501da177e4SLinus Torvalds { 7511da177e4SLinus Torvalds struct hci_dev_list_req *dl; 7521da177e4SLinus Torvalds struct hci_dev_req *dr; 7531da177e4SLinus Torvalds struct list_head *p; 7541da177e4SLinus Torvalds int n = 0, size, err; 7551da177e4SLinus Torvalds __u16 dev_num; 7561da177e4SLinus Torvalds 7571da177e4SLinus Torvalds if (get_user(dev_num, (__u16 __user *) arg)) 7581da177e4SLinus Torvalds return -EFAULT; 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvalds if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) 7611da177e4SLinus Torvalds return -EINVAL; 7621da177e4SLinus Torvalds 7631da177e4SLinus Torvalds size = sizeof(*dl) + dev_num * sizeof(*dr); 7641da177e4SLinus Torvalds 765c6bf514cSVegard Nossum if (!(dl = kzalloc(size, GFP_KERNEL))) 7661da177e4SLinus Torvalds return -ENOMEM; 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds dr = dl->dev_req; 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds read_lock_bh(&hci_dev_list_lock); 7711da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 7721da177e4SLinus Torvalds struct hci_dev *hdev; 7731da177e4SLinus Torvalds hdev = list_entry(p, struct hci_dev, list); 7741da177e4SLinus Torvalds (dr + n)->dev_id = hdev->id; 7751da177e4SLinus Torvalds (dr + n)->dev_opt = hdev->flags; 7761da177e4SLinus Torvalds if (++n >= dev_num) 7771da177e4SLinus Torvalds break; 7781da177e4SLinus Torvalds } 7791da177e4SLinus Torvalds read_unlock_bh(&hci_dev_list_lock); 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds dl->dev_num = n; 7821da177e4SLinus Torvalds size = sizeof(*dl) + n * sizeof(*dr); 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds err = copy_to_user(arg, dl, size); 7851da177e4SLinus Torvalds kfree(dl); 7861da177e4SLinus Torvalds 7871da177e4SLinus Torvalds return err ? -EFAULT : 0; 7881da177e4SLinus Torvalds } 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds int hci_get_dev_info(void __user *arg) 7911da177e4SLinus Torvalds { 7921da177e4SLinus Torvalds struct hci_dev *hdev; 7931da177e4SLinus Torvalds struct hci_dev_info di; 7941da177e4SLinus Torvalds int err = 0; 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds if (copy_from_user(&di, arg, sizeof(di))) 7971da177e4SLinus Torvalds return -EFAULT; 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds if (!(hdev = hci_dev_get(di.dev_id))) 8001da177e4SLinus Torvalds return -ENODEV; 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds strcpy(di.name, hdev->name); 8031da177e4SLinus Torvalds di.bdaddr = hdev->bdaddr; 804943da25dSMarcel Holtmann di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); 8051da177e4SLinus Torvalds di.flags = hdev->flags; 8061da177e4SLinus Torvalds di.pkt_type = hdev->pkt_type; 8071da177e4SLinus Torvalds di.acl_mtu = hdev->acl_mtu; 8081da177e4SLinus Torvalds di.acl_pkts = hdev->acl_pkts; 8091da177e4SLinus Torvalds di.sco_mtu = hdev->sco_mtu; 8101da177e4SLinus Torvalds di.sco_pkts = hdev->sco_pkts; 8111da177e4SLinus Torvalds di.link_policy = hdev->link_policy; 8121da177e4SLinus Torvalds di.link_mode = hdev->link_mode; 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); 8151da177e4SLinus Torvalds memcpy(&di.features, &hdev->features, sizeof(di.features)); 8161da177e4SLinus Torvalds 8171da177e4SLinus Torvalds if (copy_to_user(arg, &di, sizeof(di))) 8181da177e4SLinus Torvalds err = -EFAULT; 8191da177e4SLinus Torvalds 8201da177e4SLinus Torvalds hci_dev_put(hdev); 8211da177e4SLinus Torvalds 8221da177e4SLinus Torvalds return err; 8231da177e4SLinus Torvalds } 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds /* ---- Interface to HCI drivers ---- */ 8261da177e4SLinus Torvalds 827611b30f7SMarcel Holtmann static int hci_rfkill_set_block(void *data, bool blocked) 828611b30f7SMarcel Holtmann { 829611b30f7SMarcel Holtmann struct hci_dev *hdev = data; 830611b30f7SMarcel Holtmann 831611b30f7SMarcel Holtmann BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); 832611b30f7SMarcel Holtmann 833611b30f7SMarcel Holtmann if (!blocked) 834611b30f7SMarcel Holtmann return 0; 835611b30f7SMarcel Holtmann 836611b30f7SMarcel Holtmann hci_dev_do_close(hdev); 837611b30f7SMarcel Holtmann 838611b30f7SMarcel Holtmann return 0; 839611b30f7SMarcel Holtmann } 840611b30f7SMarcel Holtmann 841611b30f7SMarcel Holtmann static const struct rfkill_ops hci_rfkill_ops = { 842611b30f7SMarcel Holtmann .set_block = hci_rfkill_set_block, 843611b30f7SMarcel Holtmann }; 844611b30f7SMarcel Holtmann 8451da177e4SLinus Torvalds /* Alloc HCI device */ 8461da177e4SLinus Torvalds struct hci_dev *hci_alloc_dev(void) 8471da177e4SLinus Torvalds { 8481da177e4SLinus Torvalds struct hci_dev *hdev; 8491da177e4SLinus Torvalds 85025ea6db0SMarcel Holtmann hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); 8511da177e4SLinus Torvalds if (!hdev) 8521da177e4SLinus Torvalds return NULL; 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds skb_queue_head_init(&hdev->driver_init); 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds return hdev; 8571da177e4SLinus Torvalds } 8581da177e4SLinus Torvalds EXPORT_SYMBOL(hci_alloc_dev); 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds /* Free HCI device */ 8611da177e4SLinus Torvalds void hci_free_dev(struct hci_dev *hdev) 8621da177e4SLinus Torvalds { 8631da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 8641da177e4SLinus Torvalds 865a91f2e39SMarcel Holtmann /* will free via device release */ 866a91f2e39SMarcel Holtmann put_device(&hdev->dev); 8671da177e4SLinus Torvalds } 8681da177e4SLinus Torvalds EXPORT_SYMBOL(hci_free_dev); 8691da177e4SLinus Torvalds 8701da177e4SLinus Torvalds /* Register HCI device */ 8711da177e4SLinus Torvalds int hci_register_dev(struct hci_dev *hdev) 8721da177e4SLinus Torvalds { 8731da177e4SLinus Torvalds struct list_head *head = &hci_dev_list, *p; 874ef222013SMarcel Holtmann int i, id = 0; 8751da177e4SLinus Torvalds 876c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, 877c13854ceSMarcel Holtmann hdev->bus, hdev->owner); 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds if (!hdev->open || !hdev->close || !hdev->destruct) 8801da177e4SLinus Torvalds return -EINVAL; 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds /* Find first available device id */ 8851da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 8861da177e4SLinus Torvalds if (list_entry(p, struct hci_dev, list)->id != id) 8871da177e4SLinus Torvalds break; 8881da177e4SLinus Torvalds head = p; id++; 8891da177e4SLinus Torvalds } 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds sprintf(hdev->name, "hci%d", id); 8921da177e4SLinus Torvalds hdev->id = id; 8931da177e4SLinus Torvalds list_add(&hdev->list, head); 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds atomic_set(&hdev->refcnt, 1); 8961da177e4SLinus Torvalds spin_lock_init(&hdev->lock); 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds hdev->flags = 0; 8991da177e4SLinus Torvalds hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); 9005b7f9909SMarcel Holtmann hdev->esco_type = (ESCO_HV1); 9011da177e4SLinus Torvalds hdev->link_mode = (HCI_LM_ACCEPT); 9021da177e4SLinus Torvalds 90304837f64SMarcel Holtmann hdev->idle_timeout = 0; 90404837f64SMarcel Holtmann hdev->sniff_max_interval = 800; 90504837f64SMarcel Holtmann hdev->sniff_min_interval = 80; 90604837f64SMarcel Holtmann 9071da177e4SLinus Torvalds tasklet_init(&hdev->cmd_task, hci_cmd_task,(unsigned long) hdev); 9081da177e4SLinus Torvalds tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); 9091da177e4SLinus Torvalds tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); 9101da177e4SLinus Torvalds 9111da177e4SLinus Torvalds skb_queue_head_init(&hdev->rx_q); 9121da177e4SLinus Torvalds skb_queue_head_init(&hdev->cmd_q); 9131da177e4SLinus Torvalds skb_queue_head_init(&hdev->raw_q); 9141da177e4SLinus Torvalds 915ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 916ef222013SMarcel Holtmann hdev->reassembly[i] = NULL; 917ef222013SMarcel Holtmann 9181da177e4SLinus Torvalds init_waitqueue_head(&hdev->req_wait_q); 919a6a67efdSThomas Gleixner mutex_init(&hdev->req_lock); 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds inquiry_cache_init(hdev); 9221da177e4SLinus Torvalds 9231da177e4SLinus Torvalds hci_conn_hash_init(hdev); 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 9261da177e4SLinus Torvalds 9271da177e4SLinus Torvalds atomic_set(&hdev->promisc, 0); 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9301da177e4SLinus Torvalds 9311da177e4SLinus Torvalds hci_register_sysfs(hdev); 9321da177e4SLinus Torvalds 933611b30f7SMarcel Holtmann hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, 934611b30f7SMarcel Holtmann RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); 935611b30f7SMarcel Holtmann if (hdev->rfkill) { 936611b30f7SMarcel Holtmann if (rfkill_register(hdev->rfkill) < 0) { 937611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 938611b30f7SMarcel Holtmann hdev->rfkill = NULL; 939611b30f7SMarcel Holtmann } 940611b30f7SMarcel Holtmann } 941611b30f7SMarcel Holtmann 9421da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_REG); 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds return id; 9451da177e4SLinus Torvalds } 9461da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_dev); 9471da177e4SLinus Torvalds 9481da177e4SLinus Torvalds /* Unregister HCI device */ 9491da177e4SLinus Torvalds int hci_unregister_dev(struct hci_dev *hdev) 9501da177e4SLinus Torvalds { 951ef222013SMarcel Holtmann int i; 952ef222013SMarcel Holtmann 953c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 9541da177e4SLinus Torvalds 9551da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 9561da177e4SLinus Torvalds list_del(&hdev->list); 9571da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9581da177e4SLinus Torvalds 9591da177e4SLinus Torvalds hci_dev_do_close(hdev); 9601da177e4SLinus Torvalds 961ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 962ef222013SMarcel Holtmann kfree_skb(hdev->reassembly[i]); 963ef222013SMarcel Holtmann 9641da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UNREG); 9651da177e4SLinus Torvalds 966611b30f7SMarcel Holtmann if (hdev->rfkill) { 967611b30f7SMarcel Holtmann rfkill_unregister(hdev->rfkill); 968611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 969611b30f7SMarcel Holtmann } 970611b30f7SMarcel Holtmann 971147e2d59SDave Young hci_unregister_sysfs(hdev); 972147e2d59SDave Young 9731da177e4SLinus Torvalds __hci_dev_put(hdev); 974ef222013SMarcel Holtmann 9751da177e4SLinus Torvalds return 0; 9761da177e4SLinus Torvalds } 9771da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_dev); 9781da177e4SLinus Torvalds 9791da177e4SLinus Torvalds /* Suspend HCI device */ 9801da177e4SLinus Torvalds int hci_suspend_dev(struct hci_dev *hdev) 9811da177e4SLinus Torvalds { 9821da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_SUSPEND); 9831da177e4SLinus Torvalds return 0; 9841da177e4SLinus Torvalds } 9851da177e4SLinus Torvalds EXPORT_SYMBOL(hci_suspend_dev); 9861da177e4SLinus Torvalds 9871da177e4SLinus Torvalds /* Resume HCI device */ 9881da177e4SLinus Torvalds int hci_resume_dev(struct hci_dev *hdev) 9891da177e4SLinus Torvalds { 9901da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_RESUME); 9911da177e4SLinus Torvalds return 0; 9921da177e4SLinus Torvalds } 9931da177e4SLinus Torvalds EXPORT_SYMBOL(hci_resume_dev); 9941da177e4SLinus Torvalds 99576bca880SMarcel Holtmann /* Receive frame from HCI drivers */ 99676bca880SMarcel Holtmann int hci_recv_frame(struct sk_buff *skb) 99776bca880SMarcel Holtmann { 99876bca880SMarcel Holtmann struct hci_dev *hdev = (struct hci_dev *) skb->dev; 99976bca880SMarcel Holtmann if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 100076bca880SMarcel Holtmann && !test_bit(HCI_INIT, &hdev->flags))) { 100176bca880SMarcel Holtmann kfree_skb(skb); 100276bca880SMarcel Holtmann return -ENXIO; 100376bca880SMarcel Holtmann } 100476bca880SMarcel Holtmann 100576bca880SMarcel Holtmann /* Incomming skb */ 100676bca880SMarcel Holtmann bt_cb(skb)->incoming = 1; 100776bca880SMarcel Holtmann 100876bca880SMarcel Holtmann /* Time stamp */ 100976bca880SMarcel Holtmann __net_timestamp(skb); 101076bca880SMarcel Holtmann 101176bca880SMarcel Holtmann /* Queue frame for rx task */ 101276bca880SMarcel Holtmann skb_queue_tail(&hdev->rx_q, skb); 1013c78ae283SMarcel Holtmann tasklet_schedule(&hdev->rx_task); 1014c78ae283SMarcel Holtmann 101576bca880SMarcel Holtmann return 0; 101676bca880SMarcel Holtmann } 101776bca880SMarcel Holtmann EXPORT_SYMBOL(hci_recv_frame); 101876bca880SMarcel Holtmann 1019ef222013SMarcel Holtmann /* Receive packet type fragment */ 1020ef222013SMarcel Holtmann #define __reassembly(hdev, type) ((hdev)->reassembly[(type) - 2]) 1021ef222013SMarcel Holtmann 1022ef222013SMarcel Holtmann int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 1023ef222013SMarcel Holtmann { 1024ef222013SMarcel Holtmann if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) 1025ef222013SMarcel Holtmann return -EILSEQ; 1026ef222013SMarcel Holtmann 1027ef222013SMarcel Holtmann while (count) { 1028ef222013SMarcel Holtmann struct sk_buff *skb = __reassembly(hdev, type); 1029ef222013SMarcel Holtmann struct { int expect; } *scb; 1030ef222013SMarcel Holtmann int len = 0; 1031ef222013SMarcel Holtmann 1032ef222013SMarcel Holtmann if (!skb) { 1033ef222013SMarcel Holtmann /* Start of the frame */ 1034ef222013SMarcel Holtmann 1035ef222013SMarcel Holtmann switch (type) { 1036ef222013SMarcel Holtmann case HCI_EVENT_PKT: 1037ef222013SMarcel Holtmann if (count >= HCI_EVENT_HDR_SIZE) { 1038ef222013SMarcel Holtmann struct hci_event_hdr *h = data; 1039ef222013SMarcel Holtmann len = HCI_EVENT_HDR_SIZE + h->plen; 1040ef222013SMarcel Holtmann } else 1041ef222013SMarcel Holtmann return -EILSEQ; 1042ef222013SMarcel Holtmann break; 1043ef222013SMarcel Holtmann 1044ef222013SMarcel Holtmann case HCI_ACLDATA_PKT: 1045ef222013SMarcel Holtmann if (count >= HCI_ACL_HDR_SIZE) { 1046ef222013SMarcel Holtmann struct hci_acl_hdr *h = data; 1047ef222013SMarcel Holtmann len = HCI_ACL_HDR_SIZE + __le16_to_cpu(h->dlen); 1048ef222013SMarcel Holtmann } else 1049ef222013SMarcel Holtmann return -EILSEQ; 1050ef222013SMarcel Holtmann break; 1051ef222013SMarcel Holtmann 1052ef222013SMarcel Holtmann case HCI_SCODATA_PKT: 1053ef222013SMarcel Holtmann if (count >= HCI_SCO_HDR_SIZE) { 1054ef222013SMarcel Holtmann struct hci_sco_hdr *h = data; 1055ef222013SMarcel Holtmann len = HCI_SCO_HDR_SIZE + h->dlen; 1056ef222013SMarcel Holtmann } else 1057ef222013SMarcel Holtmann return -EILSEQ; 1058ef222013SMarcel Holtmann break; 1059ef222013SMarcel Holtmann } 1060ef222013SMarcel Holtmann 1061ef222013SMarcel Holtmann skb = bt_skb_alloc(len, GFP_ATOMIC); 1062ef222013SMarcel Holtmann if (!skb) { 1063ef222013SMarcel Holtmann BT_ERR("%s no memory for packet", hdev->name); 1064ef222013SMarcel Holtmann return -ENOMEM; 1065ef222013SMarcel Holtmann } 1066ef222013SMarcel Holtmann 1067ef222013SMarcel Holtmann skb->dev = (void *) hdev; 1068ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1069ef222013SMarcel Holtmann 1070ef222013SMarcel Holtmann __reassembly(hdev, type) = skb; 1071ef222013SMarcel Holtmann 1072ef222013SMarcel Holtmann scb = (void *) skb->cb; 1073ef222013SMarcel Holtmann scb->expect = len; 1074ef222013SMarcel Holtmann } else { 1075ef222013SMarcel Holtmann /* Continuation */ 1076ef222013SMarcel Holtmann 1077ef222013SMarcel Holtmann scb = (void *) skb->cb; 1078ef222013SMarcel Holtmann len = scb->expect; 1079ef222013SMarcel Holtmann } 1080ef222013SMarcel Holtmann 1081ef222013SMarcel Holtmann len = min(len, count); 1082ef222013SMarcel Holtmann 1083ef222013SMarcel Holtmann memcpy(skb_put(skb, len), data, len); 1084ef222013SMarcel Holtmann 1085ef222013SMarcel Holtmann scb->expect -= len; 1086ef222013SMarcel Holtmann 1087ef222013SMarcel Holtmann if (scb->expect == 0) { 1088ef222013SMarcel Holtmann /* Complete frame */ 1089ef222013SMarcel Holtmann 1090ef222013SMarcel Holtmann __reassembly(hdev, type) = NULL; 1091ef222013SMarcel Holtmann 1092ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1093ef222013SMarcel Holtmann hci_recv_frame(skb); 1094ef222013SMarcel Holtmann } 1095ef222013SMarcel Holtmann 1096ef222013SMarcel Holtmann count -= len; data += len; 1097ef222013SMarcel Holtmann } 1098ef222013SMarcel Holtmann 1099ef222013SMarcel Holtmann return 0; 1100ef222013SMarcel Holtmann } 1101ef222013SMarcel Holtmann EXPORT_SYMBOL(hci_recv_fragment); 1102ef222013SMarcel Holtmann 11031da177e4SLinus Torvalds /* ---- Interface to upper protocols ---- */ 11041da177e4SLinus Torvalds 11051da177e4SLinus Torvalds /* Register/Unregister protocols. 11061da177e4SLinus Torvalds * hci_task_lock is used to ensure that no tasks are running. */ 11071da177e4SLinus Torvalds int hci_register_proto(struct hci_proto *hp) 11081da177e4SLinus Torvalds { 11091da177e4SLinus Torvalds int err = 0; 11101da177e4SLinus Torvalds 11111da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11121da177e4SLinus Torvalds 11131da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11141da177e4SLinus Torvalds return -EINVAL; 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvalds if (!hci_proto[hp->id]) 11191da177e4SLinus Torvalds hci_proto[hp->id] = hp; 11201da177e4SLinus Torvalds else 11211da177e4SLinus Torvalds err = -EEXIST; 11221da177e4SLinus Torvalds 11231da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds return err; 11261da177e4SLinus Torvalds } 11271da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_proto); 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvalds int hci_unregister_proto(struct hci_proto *hp) 11301da177e4SLinus Torvalds { 11311da177e4SLinus Torvalds int err = 0; 11321da177e4SLinus Torvalds 11331da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11341da177e4SLinus Torvalds 11351da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11361da177e4SLinus Torvalds return -EINVAL; 11371da177e4SLinus Torvalds 11381da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds if (hci_proto[hp->id]) 11411da177e4SLinus Torvalds hci_proto[hp->id] = NULL; 11421da177e4SLinus Torvalds else 11431da177e4SLinus Torvalds err = -ENOENT; 11441da177e4SLinus Torvalds 11451da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds return err; 11481da177e4SLinus Torvalds } 11491da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_proto); 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds int hci_register_cb(struct hci_cb *cb) 11521da177e4SLinus Torvalds { 11531da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11561da177e4SLinus Torvalds list_add(&cb->list, &hci_cb_list); 11571da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds return 0; 11601da177e4SLinus Torvalds } 11611da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_cb); 11621da177e4SLinus Torvalds 11631da177e4SLinus Torvalds int hci_unregister_cb(struct hci_cb *cb) 11641da177e4SLinus Torvalds { 11651da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11661da177e4SLinus Torvalds 11671da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11681da177e4SLinus Torvalds list_del(&cb->list); 11691da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds return 0; 11721da177e4SLinus Torvalds } 11731da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_cb); 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds static int hci_send_frame(struct sk_buff *skb) 11761da177e4SLinus Torvalds { 11771da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) skb->dev; 11781da177e4SLinus Torvalds 11791da177e4SLinus Torvalds if (!hdev) { 11801da177e4SLinus Torvalds kfree_skb(skb); 11811da177e4SLinus Torvalds return -ENODEV; 11821da177e4SLinus Torvalds } 11831da177e4SLinus Torvalds 11840d48d939SMarcel Holtmann BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); 11851da177e4SLinus Torvalds 11861da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 11871da177e4SLinus Torvalds /* Time stamp */ 1188a61bbcf2SPatrick McHardy __net_timestamp(skb); 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 11911da177e4SLinus Torvalds } 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvalds /* Get rid of skb owner, prior to sending to the driver. */ 11941da177e4SLinus Torvalds skb_orphan(skb); 11951da177e4SLinus Torvalds 11961da177e4SLinus Torvalds return hdev->send(skb); 11971da177e4SLinus Torvalds } 11981da177e4SLinus Torvalds 11991da177e4SLinus Torvalds /* Send HCI command */ 1200a9de9248SMarcel Holtmann int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) 12011da177e4SLinus Torvalds { 12021da177e4SLinus Torvalds int len = HCI_COMMAND_HDR_SIZE + plen; 12031da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12041da177e4SLinus Torvalds struct sk_buff *skb; 12051da177e4SLinus Torvalds 1206a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); 12071da177e4SLinus Torvalds 12081da177e4SLinus Torvalds skb = bt_skb_alloc(len, GFP_ATOMIC); 12091da177e4SLinus Torvalds if (!skb) { 1210ef222013SMarcel Holtmann BT_ERR("%s no memory for command", hdev->name); 12111da177e4SLinus Torvalds return -ENOMEM; 12121da177e4SLinus Torvalds } 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); 1215a9de9248SMarcel Holtmann hdr->opcode = cpu_to_le16(opcode); 12161da177e4SLinus Torvalds hdr->plen = plen; 12171da177e4SLinus Torvalds 12181da177e4SLinus Torvalds if (plen) 12191da177e4SLinus Torvalds memcpy(skb_put(skb, plen), param, plen); 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds BT_DBG("skb len %d", skb->len); 12221da177e4SLinus Torvalds 12230d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 12241da177e4SLinus Torvalds skb->dev = (void *) hdev; 1225c78ae283SMarcel Holtmann 12261da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 1227c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 12281da177e4SLinus Torvalds 12291da177e4SLinus Torvalds return 0; 12301da177e4SLinus Torvalds } 12311da177e4SLinus Torvalds 12321da177e4SLinus Torvalds /* Get data from the previously sent command */ 1233a9de9248SMarcel Holtmann void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) 12341da177e4SLinus Torvalds { 12351da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12361da177e4SLinus Torvalds 12371da177e4SLinus Torvalds if (!hdev->sent_cmd) 12381da177e4SLinus Torvalds return NULL; 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds hdr = (void *) hdev->sent_cmd->data; 12411da177e4SLinus Torvalds 1242a9de9248SMarcel Holtmann if (hdr->opcode != cpu_to_le16(opcode)) 12431da177e4SLinus Torvalds return NULL; 12441da177e4SLinus Torvalds 1245a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x", hdev->name, opcode); 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvalds return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; 12481da177e4SLinus Torvalds } 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvalds /* Send ACL data */ 12511da177e4SLinus Torvalds static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) 12521da177e4SLinus Torvalds { 12531da177e4SLinus Torvalds struct hci_acl_hdr *hdr; 12541da177e4SLinus Torvalds int len = skb->len; 12551da177e4SLinus Torvalds 1256badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_ACL_HDR_SIZE); 1257badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 12589c70220bSArnaldo Carvalho de Melo hdr = (struct hci_acl_hdr *)skb_transport_header(skb); 1259aca3192cSYOSHIFUJI Hideaki hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); 1260aca3192cSYOSHIFUJI Hideaki hdr->dlen = cpu_to_le16(len); 12611da177e4SLinus Torvalds } 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags) 12641da177e4SLinus Torvalds { 12651da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 12661da177e4SLinus Torvalds struct sk_buff *list; 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); 12691da177e4SLinus Torvalds 12701da177e4SLinus Torvalds skb->dev = (void *) hdev; 12710d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 12721da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_START); 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds if (!(list = skb_shinfo(skb)->frag_list)) { 12751da177e4SLinus Torvalds /* Non fragmented */ 12761da177e4SLinus Torvalds BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 12791da177e4SLinus Torvalds } else { 12801da177e4SLinus Torvalds /* Fragmented */ 12811da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 12821da177e4SLinus Torvalds 12831da177e4SLinus Torvalds skb_shinfo(skb)->frag_list = NULL; 12841da177e4SLinus Torvalds 12851da177e4SLinus Torvalds /* Queue all fragments atomically */ 12861da177e4SLinus Torvalds spin_lock_bh(&conn->data_q.lock); 12871da177e4SLinus Torvalds 12881da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 12891da177e4SLinus Torvalds do { 12901da177e4SLinus Torvalds skb = list; list = list->next; 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds skb->dev = (void *) hdev; 12930d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 12941da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_CONT); 12951da177e4SLinus Torvalds 12961da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 12971da177e4SLinus Torvalds 12981da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 12991da177e4SLinus Torvalds } while (list); 13001da177e4SLinus Torvalds 13011da177e4SLinus Torvalds spin_unlock_bh(&conn->data_q.lock); 13021da177e4SLinus Torvalds } 13031da177e4SLinus Torvalds 1304c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 1305c78ae283SMarcel Holtmann 13061da177e4SLinus Torvalds return 0; 13071da177e4SLinus Torvalds } 13081da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_acl); 13091da177e4SLinus Torvalds 13101da177e4SLinus Torvalds /* Send SCO data */ 13110d861d8bSGustavo F. Padovan void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) 13121da177e4SLinus Torvalds { 13131da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 13141da177e4SLinus Torvalds struct hci_sco_hdr hdr; 13151da177e4SLinus Torvalds 13161da177e4SLinus Torvalds BT_DBG("%s len %d", hdev->name, skb->len); 13171da177e4SLinus Torvalds 1318aca3192cSYOSHIFUJI Hideaki hdr.handle = cpu_to_le16(conn->handle); 13191da177e4SLinus Torvalds hdr.dlen = skb->len; 13201da177e4SLinus Torvalds 1321badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_SCO_HDR_SIZE); 1322badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 13239c70220bSArnaldo Carvalho de Melo memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); 13241da177e4SLinus Torvalds 13251da177e4SLinus Torvalds skb->dev = (void *) hdev; 13260d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 1327c78ae283SMarcel Holtmann 13281da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 1329c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 13301da177e4SLinus Torvalds } 13311da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_sco); 13321da177e4SLinus Torvalds 13331da177e4SLinus Torvalds /* ---- HCI TX task (outgoing data) ---- */ 13341da177e4SLinus Torvalds 13351da177e4SLinus Torvalds /* HCI Connection scheduler */ 13361da177e4SLinus Torvalds static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) 13371da177e4SLinus Torvalds { 13381da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13391da177e4SLinus Torvalds struct hci_conn *conn = NULL; 13401da177e4SLinus Torvalds int num = 0, min = ~0; 13411da177e4SLinus Torvalds struct list_head *p; 13421da177e4SLinus Torvalds 13431da177e4SLinus Torvalds /* We don't have to lock device here. Connections are always 13441da177e4SLinus Torvalds * added and removed with TX task disabled. */ 13451da177e4SLinus Torvalds list_for_each(p, &h->list) { 13461da177e4SLinus Torvalds struct hci_conn *c; 13471da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13481da177e4SLinus Torvalds 1349769be974SMarcel Holtmann if (c->type != type || skb_queue_empty(&c->data_q)) 13501da177e4SLinus Torvalds continue; 1351769be974SMarcel Holtmann 1352769be974SMarcel Holtmann if (c->state != BT_CONNECTED && c->state != BT_CONFIG) 1353769be974SMarcel Holtmann continue; 1354769be974SMarcel Holtmann 13551da177e4SLinus Torvalds num++; 13561da177e4SLinus Torvalds 13571da177e4SLinus Torvalds if (c->sent < min) { 13581da177e4SLinus Torvalds min = c->sent; 13591da177e4SLinus Torvalds conn = c; 13601da177e4SLinus Torvalds } 13611da177e4SLinus Torvalds } 13621da177e4SLinus Torvalds 13631da177e4SLinus Torvalds if (conn) { 13641da177e4SLinus Torvalds int cnt = (type == ACL_LINK ? hdev->acl_cnt : hdev->sco_cnt); 13651da177e4SLinus Torvalds int q = cnt / num; 13661da177e4SLinus Torvalds *quote = q ? q : 1; 13671da177e4SLinus Torvalds } else 13681da177e4SLinus Torvalds *quote = 0; 13691da177e4SLinus Torvalds 13701da177e4SLinus Torvalds BT_DBG("conn %p quote %d", conn, *quote); 13711da177e4SLinus Torvalds return conn; 13721da177e4SLinus Torvalds } 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds static inline void hci_acl_tx_to(struct hci_dev *hdev) 13751da177e4SLinus Torvalds { 13761da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13771da177e4SLinus Torvalds struct list_head *p; 13781da177e4SLinus Torvalds struct hci_conn *c; 13791da177e4SLinus Torvalds 13801da177e4SLinus Torvalds BT_ERR("%s ACL tx timeout", hdev->name); 13811da177e4SLinus Torvalds 13821da177e4SLinus Torvalds /* Kill stalled connections */ 13831da177e4SLinus Torvalds list_for_each(p, &h->list) { 13841da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13851da177e4SLinus Torvalds if (c->type == ACL_LINK && c->sent) { 13861da177e4SLinus Torvalds BT_ERR("%s killing stalled ACL connection %s", 13871da177e4SLinus Torvalds hdev->name, batostr(&c->dst)); 13881da177e4SLinus Torvalds hci_acl_disconn(c, 0x13); 13891da177e4SLinus Torvalds } 13901da177e4SLinus Torvalds } 13911da177e4SLinus Torvalds } 13921da177e4SLinus Torvalds 13931da177e4SLinus Torvalds static inline void hci_sched_acl(struct hci_dev *hdev) 13941da177e4SLinus Torvalds { 13951da177e4SLinus Torvalds struct hci_conn *conn; 13961da177e4SLinus Torvalds struct sk_buff *skb; 13971da177e4SLinus Torvalds int quote; 13981da177e4SLinus Torvalds 13991da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14001da177e4SLinus Torvalds 14011da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 14021da177e4SLinus Torvalds /* ACL tx timeout must be longer than maximum 14031da177e4SLinus Torvalds * link supervision timeout (40.9 seconds) */ 140482453021SS.Çağlar Onur if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) 14051da177e4SLinus Torvalds hci_acl_tx_to(hdev); 14061da177e4SLinus Torvalds } 14071da177e4SLinus Torvalds 14081da177e4SLinus Torvalds while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { 14091da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14101da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 141104837f64SMarcel Holtmann 141204837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 141304837f64SMarcel Holtmann 14141da177e4SLinus Torvalds hci_send_frame(skb); 14151da177e4SLinus Torvalds hdev->acl_last_tx = jiffies; 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvalds hdev->acl_cnt--; 14181da177e4SLinus Torvalds conn->sent++; 14191da177e4SLinus Torvalds } 14201da177e4SLinus Torvalds } 14211da177e4SLinus Torvalds } 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds /* Schedule SCO */ 14241da177e4SLinus Torvalds static inline void hci_sched_sco(struct hci_dev *hdev) 14251da177e4SLinus Torvalds { 14261da177e4SLinus Torvalds struct hci_conn *conn; 14271da177e4SLinus Torvalds struct sk_buff *skb; 14281da177e4SLinus Torvalds int quote; 14291da177e4SLinus Torvalds 14301da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvalds while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { 14331da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14341da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 14351da177e4SLinus Torvalds hci_send_frame(skb); 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds conn->sent++; 14381da177e4SLinus Torvalds if (conn->sent == ~0) 14391da177e4SLinus Torvalds conn->sent = 0; 14401da177e4SLinus Torvalds } 14411da177e4SLinus Torvalds } 14421da177e4SLinus Torvalds } 14431da177e4SLinus Torvalds 1444b6a0dc82SMarcel Holtmann static inline void hci_sched_esco(struct hci_dev *hdev) 1445b6a0dc82SMarcel Holtmann { 1446b6a0dc82SMarcel Holtmann struct hci_conn *conn; 1447b6a0dc82SMarcel Holtmann struct sk_buff *skb; 1448b6a0dc82SMarcel Holtmann int quote; 1449b6a0dc82SMarcel Holtmann 1450b6a0dc82SMarcel Holtmann BT_DBG("%s", hdev->name); 1451b6a0dc82SMarcel Holtmann 1452b6a0dc82SMarcel Holtmann while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { 1453b6a0dc82SMarcel Holtmann while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 1454b6a0dc82SMarcel Holtmann BT_DBG("skb %p len %d", skb, skb->len); 1455b6a0dc82SMarcel Holtmann hci_send_frame(skb); 1456b6a0dc82SMarcel Holtmann 1457b6a0dc82SMarcel Holtmann conn->sent++; 1458b6a0dc82SMarcel Holtmann if (conn->sent == ~0) 1459b6a0dc82SMarcel Holtmann conn->sent = 0; 1460b6a0dc82SMarcel Holtmann } 1461b6a0dc82SMarcel Holtmann } 1462b6a0dc82SMarcel Holtmann } 1463b6a0dc82SMarcel Holtmann 14641da177e4SLinus Torvalds static void hci_tx_task(unsigned long arg) 14651da177e4SLinus Torvalds { 14661da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 14671da177e4SLinus Torvalds struct sk_buff *skb; 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds read_lock(&hci_task_lock); 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds BT_DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt); 14721da177e4SLinus Torvalds 14731da177e4SLinus Torvalds /* Schedule queues and send stuff to HCI driver */ 14741da177e4SLinus Torvalds 14751da177e4SLinus Torvalds hci_sched_acl(hdev); 14761da177e4SLinus Torvalds 14771da177e4SLinus Torvalds hci_sched_sco(hdev); 14781da177e4SLinus Torvalds 1479b6a0dc82SMarcel Holtmann hci_sched_esco(hdev); 1480b6a0dc82SMarcel Holtmann 14811da177e4SLinus Torvalds /* Send next queued raw (unknown type) packet */ 14821da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->raw_q))) 14831da177e4SLinus Torvalds hci_send_frame(skb); 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds read_unlock(&hci_task_lock); 14861da177e4SLinus Torvalds } 14871da177e4SLinus Torvalds 14881da177e4SLinus Torvalds /* ----- HCI RX task (incoming data proccessing) ----- */ 14891da177e4SLinus Torvalds 14901da177e4SLinus Torvalds /* ACL data packet */ 14911da177e4SLinus Torvalds static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) 14921da177e4SLinus Torvalds { 14931da177e4SLinus Torvalds struct hci_acl_hdr *hdr = (void *) skb->data; 14941da177e4SLinus Torvalds struct hci_conn *conn; 14951da177e4SLinus Torvalds __u16 handle, flags; 14961da177e4SLinus Torvalds 14971da177e4SLinus Torvalds skb_pull(skb, HCI_ACL_HDR_SIZE); 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15001da177e4SLinus Torvalds flags = hci_flags(handle); 15011da177e4SLinus Torvalds handle = hci_handle(handle); 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); 15041da177e4SLinus Torvalds 15051da177e4SLinus Torvalds hdev->stat.acl_rx++; 15061da177e4SLinus Torvalds 15071da177e4SLinus Torvalds hci_dev_lock(hdev); 15081da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15091da177e4SLinus Torvalds hci_dev_unlock(hdev); 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds if (conn) { 15121da177e4SLinus Torvalds register struct hci_proto *hp; 15131da177e4SLinus Torvalds 151404837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 151504837f64SMarcel Holtmann 15161da177e4SLinus Torvalds /* Send to upper protocol */ 15171da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_L2CAP]) && hp->recv_acldata) { 15181da177e4SLinus Torvalds hp->recv_acldata(conn, skb, flags); 15191da177e4SLinus Torvalds return; 15201da177e4SLinus Torvalds } 15211da177e4SLinus Torvalds } else { 15221da177e4SLinus Torvalds BT_ERR("%s ACL packet for unknown connection handle %d", 15231da177e4SLinus Torvalds hdev->name, handle); 15241da177e4SLinus Torvalds } 15251da177e4SLinus Torvalds 15261da177e4SLinus Torvalds kfree_skb(skb); 15271da177e4SLinus Torvalds } 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds /* SCO data packet */ 15301da177e4SLinus Torvalds static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) 15311da177e4SLinus Torvalds { 15321da177e4SLinus Torvalds struct hci_sco_hdr *hdr = (void *) skb->data; 15331da177e4SLinus Torvalds struct hci_conn *conn; 15341da177e4SLinus Torvalds __u16 handle; 15351da177e4SLinus Torvalds 15361da177e4SLinus Torvalds skb_pull(skb, HCI_SCO_HDR_SIZE); 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15391da177e4SLinus Torvalds 15401da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds hdev->stat.sco_rx++; 15431da177e4SLinus Torvalds 15441da177e4SLinus Torvalds hci_dev_lock(hdev); 15451da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15461da177e4SLinus Torvalds hci_dev_unlock(hdev); 15471da177e4SLinus Torvalds 15481da177e4SLinus Torvalds if (conn) { 15491da177e4SLinus Torvalds register struct hci_proto *hp; 15501da177e4SLinus Torvalds 15511da177e4SLinus Torvalds /* Send to upper protocol */ 15521da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_SCO]) && hp->recv_scodata) { 15531da177e4SLinus Torvalds hp->recv_scodata(conn, skb); 15541da177e4SLinus Torvalds return; 15551da177e4SLinus Torvalds } 15561da177e4SLinus Torvalds } else { 15571da177e4SLinus Torvalds BT_ERR("%s SCO packet for unknown connection handle %d", 15581da177e4SLinus Torvalds hdev->name, handle); 15591da177e4SLinus Torvalds } 15601da177e4SLinus Torvalds 15611da177e4SLinus Torvalds kfree_skb(skb); 15621da177e4SLinus Torvalds } 15631da177e4SLinus Torvalds 15646516455dSMarcel Holtmann static void hci_rx_task(unsigned long arg) 15651da177e4SLinus Torvalds { 15661da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 15671da177e4SLinus Torvalds struct sk_buff *skb; 15681da177e4SLinus Torvalds 15691da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 15701da177e4SLinus Torvalds 15711da177e4SLinus Torvalds read_lock(&hci_task_lock); 15721da177e4SLinus Torvalds 15731da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->rx_q))) { 15741da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 15751da177e4SLinus Torvalds /* Send copy to the sockets */ 15761da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 15771da177e4SLinus Torvalds } 15781da177e4SLinus Torvalds 15791da177e4SLinus Torvalds if (test_bit(HCI_RAW, &hdev->flags)) { 15801da177e4SLinus Torvalds kfree_skb(skb); 15811da177e4SLinus Torvalds continue; 15821da177e4SLinus Torvalds } 15831da177e4SLinus Torvalds 15841da177e4SLinus Torvalds if (test_bit(HCI_INIT, &hdev->flags)) { 15851da177e4SLinus Torvalds /* Don't process data packets in this states. */ 15860d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 15871da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 15881da177e4SLinus Torvalds case HCI_SCODATA_PKT: 15891da177e4SLinus Torvalds kfree_skb(skb); 15901da177e4SLinus Torvalds continue; 15913ff50b79SStephen Hemminger } 15921da177e4SLinus Torvalds } 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvalds /* Process frame */ 15950d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 15961da177e4SLinus Torvalds case HCI_EVENT_PKT: 15971da177e4SLinus Torvalds hci_event_packet(hdev, skb); 15981da177e4SLinus Torvalds break; 15991da177e4SLinus Torvalds 16001da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 16011da177e4SLinus Torvalds BT_DBG("%s ACL data packet", hdev->name); 16021da177e4SLinus Torvalds hci_acldata_packet(hdev, skb); 16031da177e4SLinus Torvalds break; 16041da177e4SLinus Torvalds 16051da177e4SLinus Torvalds case HCI_SCODATA_PKT: 16061da177e4SLinus Torvalds BT_DBG("%s SCO data packet", hdev->name); 16071da177e4SLinus Torvalds hci_scodata_packet(hdev, skb); 16081da177e4SLinus Torvalds break; 16091da177e4SLinus Torvalds 16101da177e4SLinus Torvalds default: 16111da177e4SLinus Torvalds kfree_skb(skb); 16121da177e4SLinus Torvalds break; 16131da177e4SLinus Torvalds } 16141da177e4SLinus Torvalds } 16151da177e4SLinus Torvalds 16161da177e4SLinus Torvalds read_unlock(&hci_task_lock); 16171da177e4SLinus Torvalds } 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvalds static void hci_cmd_task(unsigned long arg) 16201da177e4SLinus Torvalds { 16211da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 16221da177e4SLinus Torvalds struct sk_buff *skb; 16231da177e4SLinus Torvalds 16241da177e4SLinus Torvalds BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); 16251da177e4SLinus Torvalds 162682453021SS.Çağlar Onur if (!atomic_read(&hdev->cmd_cnt) && time_after(jiffies, hdev->cmd_last_tx + HZ)) { 16271da177e4SLinus Torvalds BT_ERR("%s command tx timeout", hdev->name); 16281da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 16291da177e4SLinus Torvalds } 16301da177e4SLinus Torvalds 16311da177e4SLinus Torvalds /* Send queued commands */ 16321da177e4SLinus Torvalds if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) { 16331da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 16341da177e4SLinus Torvalds 16351da177e4SLinus Torvalds if ((hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC))) { 16361da177e4SLinus Torvalds atomic_dec(&hdev->cmd_cnt); 16371da177e4SLinus Torvalds hci_send_frame(skb); 16381da177e4SLinus Torvalds hdev->cmd_last_tx = jiffies; 16391da177e4SLinus Torvalds } else { 16401da177e4SLinus Torvalds skb_queue_head(&hdev->cmd_q, skb); 1641c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 16421da177e4SLinus Torvalds } 16431da177e4SLinus Torvalds } 16441da177e4SLinus Torvalds } 1645