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> 40f48fd9c8SMarcel Holtmann #include <linux/workqueue.h> 411da177e4SLinus Torvalds #include <linux/interrupt.h> 421da177e4SLinus Torvalds #include <linux/notifier.h> 43611b30f7SMarcel Holtmann #include <linux/rfkill.h> 441da177e4SLinus Torvalds #include <net/sock.h> 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds #include <asm/system.h> 471da177e4SLinus Torvalds #include <asm/uaccess.h> 481da177e4SLinus Torvalds #include <asm/unaligned.h> 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds #include <net/bluetooth/bluetooth.h> 511da177e4SLinus Torvalds #include <net/bluetooth/hci_core.h> 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds static void hci_cmd_task(unsigned long arg); 541da177e4SLinus Torvalds static void hci_rx_task(unsigned long arg); 551da177e4SLinus Torvalds static void hci_tx_task(unsigned long arg); 561da177e4SLinus Torvalds static void hci_notify(struct hci_dev *hdev, int event); 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds static DEFINE_RWLOCK(hci_task_lock); 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds /* HCI device list */ 611da177e4SLinus Torvalds LIST_HEAD(hci_dev_list); 621da177e4SLinus Torvalds DEFINE_RWLOCK(hci_dev_list_lock); 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds /* HCI callback list */ 651da177e4SLinus Torvalds LIST_HEAD(hci_cb_list); 661da177e4SLinus Torvalds DEFINE_RWLOCK(hci_cb_list_lock); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds /* HCI protocols */ 691da177e4SLinus Torvalds #define HCI_MAX_PROTO 2 701da177e4SLinus Torvalds struct hci_proto *hci_proto[HCI_MAX_PROTO]; 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds /* HCI notifiers list */ 73e041c683SAlan Stern static ATOMIC_NOTIFIER_HEAD(hci_notifier); 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds /* ---- HCI notifications ---- */ 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds int hci_register_notifier(struct notifier_block *nb) 781da177e4SLinus Torvalds { 79e041c683SAlan Stern return atomic_notifier_chain_register(&hci_notifier, nb); 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds int hci_unregister_notifier(struct notifier_block *nb) 831da177e4SLinus Torvalds { 84e041c683SAlan Stern return atomic_notifier_chain_unregister(&hci_notifier, nb); 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 876516455dSMarcel Holtmann static void hci_notify(struct hci_dev *hdev, int event) 881da177e4SLinus Torvalds { 89e041c683SAlan Stern atomic_notifier_call_chain(&hci_notifier, event, hdev); 901da177e4SLinus Torvalds } 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds /* ---- HCI requests ---- */ 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds void hci_req_complete(struct hci_dev *hdev, int result) 951da177e4SLinus Torvalds { 961da177e4SLinus Torvalds BT_DBG("%s result 0x%2.2x", hdev->name, result); 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 991da177e4SLinus Torvalds hdev->req_result = result; 1001da177e4SLinus Torvalds hdev->req_status = HCI_REQ_DONE; 1011da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1021da177e4SLinus Torvalds } 1031da177e4SLinus Torvalds } 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds static void hci_req_cancel(struct hci_dev *hdev, int err) 1061da177e4SLinus Torvalds { 1071da177e4SLinus Torvalds BT_DBG("%s err 0x%2.2x", hdev->name, err); 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 1101da177e4SLinus Torvalds hdev->req_result = err; 1111da177e4SLinus Torvalds hdev->req_status = HCI_REQ_CANCELED; 1121da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1131da177e4SLinus Torvalds } 1141da177e4SLinus Torvalds } 1151da177e4SLinus Torvalds 1161da177e4SLinus Torvalds /* Execute request and wait for completion. */ 1171da177e4SLinus Torvalds static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1181da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1191da177e4SLinus Torvalds { 1201da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 1211da177e4SLinus Torvalds int err = 0; 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds BT_DBG("%s start", hdev->name); 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds hdev->req_status = HCI_REQ_PEND; 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds add_wait_queue(&hdev->req_wait_q, &wait); 1281da177e4SLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds req(hdev, opt); 1311da177e4SLinus Torvalds schedule_timeout(timeout); 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds remove_wait_queue(&hdev->req_wait_q, &wait); 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds if (signal_pending(current)) 1361da177e4SLinus Torvalds return -EINTR; 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds switch (hdev->req_status) { 1391da177e4SLinus Torvalds case HCI_REQ_DONE: 1401da177e4SLinus Torvalds err = -bt_err(hdev->req_result); 1411da177e4SLinus Torvalds break; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds case HCI_REQ_CANCELED: 1441da177e4SLinus Torvalds err = -hdev->req_result; 1451da177e4SLinus Torvalds break; 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds default: 1481da177e4SLinus Torvalds err = -ETIMEDOUT; 1491da177e4SLinus Torvalds break; 1503ff50b79SStephen Hemminger } 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds hdev->req_status = hdev->req_result = 0; 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds BT_DBG("%s end: err %d", hdev->name, err); 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds return err; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt), 1601da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1611da177e4SLinus Torvalds { 1621da177e4SLinus Torvalds int ret; 1631da177e4SLinus Torvalds 1647c6a329eSMarcel Holtmann if (!test_bit(HCI_UP, &hdev->flags)) 1657c6a329eSMarcel Holtmann return -ENETDOWN; 1667c6a329eSMarcel Holtmann 1671da177e4SLinus Torvalds /* Serialize all requests */ 1681da177e4SLinus Torvalds hci_req_lock(hdev); 1691da177e4SLinus Torvalds ret = __hci_request(hdev, req, opt, timeout); 1701da177e4SLinus Torvalds hci_req_unlock(hdev); 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds return ret; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) 1761da177e4SLinus Torvalds { 1771da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* Reset device */ 180a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 1811da177e4SLinus Torvalds } 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds static void hci_init_req(struct hci_dev *hdev, unsigned long opt) 1841da177e4SLinus Torvalds { 1851da177e4SLinus Torvalds struct sk_buff *skb; 1861ebb9252SMarcel Holtmann __le16 param; 18789f2783dSMarcel Holtmann __u8 flt_type; 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* Driver initialization */ 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds /* Special commands */ 1941da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->driver_init))) { 1950d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 1961da177e4SLinus Torvalds skb->dev = (void *) hdev; 197c78ae283SMarcel Holtmann 1981da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 199c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds /* Mandatory initialization */ 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds /* Reset */ 2067a9d4020SMarcel Holtmann if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) 207a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds /* Read Local Supported Features */ 210a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); 2111da177e4SLinus Torvalds 2121143e5a6SMarcel Holtmann /* Read Local Version */ 213a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 2141143e5a6SMarcel Holtmann 2151da177e4SLinus Torvalds /* Read Buffer Size (ACL mtu, max pkt, etc.) */ 216a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds #if 0 2191da177e4SLinus Torvalds /* Host buffer size */ 2201da177e4SLinus Torvalds { 2211da177e4SLinus Torvalds struct hci_cp_host_buffer_size cp; 222aca3192cSYOSHIFUJI Hideaki cp.acl_mtu = cpu_to_le16(HCI_MAX_ACL_SIZE); 2231da177e4SLinus Torvalds cp.sco_mtu = HCI_MAX_SCO_SIZE; 224aca3192cSYOSHIFUJI Hideaki cp.acl_max_pkt = cpu_to_le16(0xffff); 225aca3192cSYOSHIFUJI Hideaki cp.sco_max_pkt = cpu_to_le16(0xffff); 226a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_HOST_BUFFER_SIZE, sizeof(cp), &cp); 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds #endif 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds /* Read BD Address */ 231a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); 232a9de9248SMarcel Holtmann 233a9de9248SMarcel Holtmann /* Read Class of Device */ 234a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); 235a9de9248SMarcel Holtmann 236a9de9248SMarcel Holtmann /* Read Local Name */ 237a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds /* Read Voice Setting */ 240a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds /* Optional initialization */ 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds /* Clear Event Filters */ 24589f2783dSMarcel Holtmann flt_type = HCI_FLT_CLEAR_ALL; 246a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds /* Page timeout ~20 secs */ 249aca3192cSYOSHIFUJI Hideaki param = cpu_to_le16(0x8000); 250a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_PG_TIMEOUT, 2, ¶m); 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds /* Connection accept timeout ~20 secs */ 253aca3192cSYOSHIFUJI Hideaki param = cpu_to_le16(0x7d00); 254a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) 2581da177e4SLinus Torvalds { 2591da177e4SLinus Torvalds __u8 scan = opt; 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, scan); 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds /* Inquiry and Page scans */ 264a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 2651da177e4SLinus Torvalds } 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) 2681da177e4SLinus Torvalds { 2691da177e4SLinus Torvalds __u8 auth = opt; 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, auth); 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds /* Authentication */ 274a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) 2781da177e4SLinus Torvalds { 2791da177e4SLinus Torvalds __u8 encrypt = opt; 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, encrypt); 2821da177e4SLinus Torvalds 283e4e8e37cSMarcel Holtmann /* Encryption */ 284a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds 287e4e8e37cSMarcel Holtmann static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) 288e4e8e37cSMarcel Holtmann { 289e4e8e37cSMarcel Holtmann __le16 policy = cpu_to_le16(opt); 290e4e8e37cSMarcel Holtmann 291a418b893SMarcel Holtmann BT_DBG("%s %x", hdev->name, policy); 292e4e8e37cSMarcel Holtmann 293e4e8e37cSMarcel Holtmann /* Default link policy */ 294e4e8e37cSMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); 295e4e8e37cSMarcel Holtmann } 296e4e8e37cSMarcel Holtmann 2971da177e4SLinus Torvalds /* Get HCI device by index. 2981da177e4SLinus Torvalds * Device is held on return. */ 2991da177e4SLinus Torvalds struct hci_dev *hci_dev_get(int index) 3001da177e4SLinus Torvalds { 3011da177e4SLinus Torvalds struct hci_dev *hdev = NULL; 3021da177e4SLinus Torvalds struct list_head *p; 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds BT_DBG("%d", index); 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds if (index < 0) 3071da177e4SLinus Torvalds return NULL; 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds read_lock(&hci_dev_list_lock); 3101da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 3111da177e4SLinus Torvalds struct hci_dev *d = list_entry(p, struct hci_dev, list); 3121da177e4SLinus Torvalds if (d->id == index) { 3131da177e4SLinus Torvalds hdev = hci_dev_hold(d); 3141da177e4SLinus Torvalds break; 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds } 3171da177e4SLinus Torvalds read_unlock(&hci_dev_list_lock); 3181da177e4SLinus Torvalds return hdev; 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds /* ---- Inquiry support ---- */ 3221da177e4SLinus Torvalds static void inquiry_cache_flush(struct hci_dev *hdev) 3231da177e4SLinus Torvalds { 3241da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3251da177e4SLinus Torvalds struct inquiry_entry *next = cache->list, *e; 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds BT_DBG("cache %p", cache); 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds cache->list = NULL; 3301da177e4SLinus Torvalds while ((e = next)) { 3311da177e4SLinus Torvalds next = e->next; 3321da177e4SLinus Torvalds kfree(e); 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds } 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) 3371da177e4SLinus Torvalds { 3381da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3391da177e4SLinus Torvalds struct inquiry_entry *e; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 3421da177e4SLinus Torvalds 3431da177e4SLinus Torvalds for (e = cache->list; e; e = e->next) 3441da177e4SLinus Torvalds if (!bacmp(&e->data.bdaddr, bdaddr)) 3451da177e4SLinus Torvalds break; 3461da177e4SLinus Torvalds return e; 3471da177e4SLinus Torvalds } 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data) 3501da177e4SLinus Torvalds { 3511da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3521da177e4SLinus Torvalds struct inquiry_entry *e; 3531da177e4SLinus Torvalds 3541da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds if (!(e = hci_inquiry_cache_lookup(hdev, &data->bdaddr))) { 3571da177e4SLinus Torvalds /* Entry not in the cache. Add new one. */ 35825ea6db0SMarcel Holtmann if (!(e = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC))) 3591da177e4SLinus Torvalds return; 3601da177e4SLinus Torvalds e->next = cache->list; 3611da177e4SLinus Torvalds cache->list = e; 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds memcpy(&e->data, data, sizeof(*data)); 3651da177e4SLinus Torvalds e->timestamp = jiffies; 3661da177e4SLinus Torvalds cache->timestamp = jiffies; 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) 3701da177e4SLinus Torvalds { 3711da177e4SLinus Torvalds struct inquiry_cache *cache = &hdev->inq_cache; 3721da177e4SLinus Torvalds struct inquiry_info *info = (struct inquiry_info *) buf; 3731da177e4SLinus Torvalds struct inquiry_entry *e; 3741da177e4SLinus Torvalds int copied = 0; 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds for (e = cache->list; e && copied < num; e = e->next, copied++) { 3771da177e4SLinus Torvalds struct inquiry_data *data = &e->data; 3781da177e4SLinus Torvalds bacpy(&info->bdaddr, &data->bdaddr); 3791da177e4SLinus Torvalds info->pscan_rep_mode = data->pscan_rep_mode; 3801da177e4SLinus Torvalds info->pscan_period_mode = data->pscan_period_mode; 3811da177e4SLinus Torvalds info->pscan_mode = data->pscan_mode; 3821da177e4SLinus Torvalds memcpy(info->dev_class, data->dev_class, 3); 3831da177e4SLinus Torvalds info->clock_offset = data->clock_offset; 3841da177e4SLinus Torvalds info++; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds BT_DBG("cache %p, copied %d", cache, copied); 3881da177e4SLinus Torvalds return copied; 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) 3921da177e4SLinus Torvalds { 3931da177e4SLinus Torvalds struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; 3941da177e4SLinus Torvalds struct hci_cp_inquiry cp; 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds if (test_bit(HCI_INQUIRY, &hdev->flags)) 3991da177e4SLinus Torvalds return; 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds /* Start Inquiry */ 4021da177e4SLinus Torvalds memcpy(&cp.lap, &ir->lap, 3); 4031da177e4SLinus Torvalds cp.length = ir->length; 4041da177e4SLinus Torvalds cp.num_rsp = ir->num_rsp; 405a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds int hci_inquiry(void __user *arg) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds __u8 __user *ptr = arg; 4111da177e4SLinus Torvalds struct hci_inquiry_req ir; 4121da177e4SLinus Torvalds struct hci_dev *hdev; 4131da177e4SLinus Torvalds int err = 0, do_inquiry = 0, max_rsp; 4141da177e4SLinus Torvalds long timeo; 4151da177e4SLinus Torvalds __u8 *buf; 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds if (copy_from_user(&ir, ptr, sizeof(ir))) 4181da177e4SLinus Torvalds return -EFAULT; 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds if (!(hdev = hci_dev_get(ir.dev_id))) 4211da177e4SLinus Torvalds return -ENODEV; 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 4241da177e4SLinus Torvalds if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || 4251da177e4SLinus Torvalds inquiry_cache_empty(hdev) || 4261da177e4SLinus Torvalds ir.flags & IREQ_CACHE_FLUSH) { 4271da177e4SLinus Torvalds inquiry_cache_flush(hdev); 4281da177e4SLinus Torvalds do_inquiry = 1; 4291da177e4SLinus Torvalds } 4301da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 4311da177e4SLinus Torvalds 43204837f64SMarcel Holtmann timeo = ir.length * msecs_to_jiffies(2000); 4331da177e4SLinus Torvalds if (do_inquiry && (err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo)) < 0) 4341da177e4SLinus Torvalds goto done; 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds /* for unlimited number of responses we will use buffer with 255 entries */ 4371da177e4SLinus Torvalds max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds /* cache_dump can't sleep. Therefore we allocate temp buffer and then 4401da177e4SLinus Torvalds * copy it to the user space. 4411da177e4SLinus Torvalds */ 4421da177e4SLinus Torvalds if (!(buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL))) { 4431da177e4SLinus Torvalds err = -ENOMEM; 4441da177e4SLinus Torvalds goto done; 4451da177e4SLinus Torvalds } 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 4481da177e4SLinus Torvalds ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); 4491da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 4501da177e4SLinus Torvalds 4511da177e4SLinus Torvalds BT_DBG("num_rsp %d", ir.num_rsp); 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds if (!copy_to_user(ptr, &ir, sizeof(ir))) { 4541da177e4SLinus Torvalds ptr += sizeof(ir); 4551da177e4SLinus Torvalds if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * 4561da177e4SLinus Torvalds ir.num_rsp)) 4571da177e4SLinus Torvalds err = -EFAULT; 4581da177e4SLinus Torvalds } else 4591da177e4SLinus Torvalds err = -EFAULT; 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds kfree(buf); 4621da177e4SLinus Torvalds 4631da177e4SLinus Torvalds done: 4641da177e4SLinus Torvalds hci_dev_put(hdev); 4651da177e4SLinus Torvalds return err; 4661da177e4SLinus Torvalds } 4671da177e4SLinus Torvalds 4681da177e4SLinus Torvalds /* ---- HCI ioctl helpers ---- */ 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds int hci_dev_open(__u16 dev) 4711da177e4SLinus Torvalds { 4721da177e4SLinus Torvalds struct hci_dev *hdev; 4731da177e4SLinus Torvalds int ret = 0; 4741da177e4SLinus Torvalds 4751da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 4761da177e4SLinus Torvalds return -ENODEV; 4771da177e4SLinus Torvalds 4781da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 4791da177e4SLinus Torvalds 4801da177e4SLinus Torvalds hci_req_lock(hdev); 4811da177e4SLinus Torvalds 482611b30f7SMarcel Holtmann if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { 483611b30f7SMarcel Holtmann ret = -ERFKILL; 484611b30f7SMarcel Holtmann goto done; 485611b30f7SMarcel Holtmann } 486611b30f7SMarcel Holtmann 4871da177e4SLinus Torvalds if (test_bit(HCI_UP, &hdev->flags)) { 4881da177e4SLinus Torvalds ret = -EALREADY; 4891da177e4SLinus Torvalds goto done; 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 4931da177e4SLinus Torvalds set_bit(HCI_RAW, &hdev->flags); 4941da177e4SLinus Torvalds 495943da25dSMarcel Holtmann /* Treat all non BR/EDR controllers as raw devices for now */ 496943da25dSMarcel Holtmann if (hdev->dev_type != HCI_BREDR) 497943da25dSMarcel Holtmann set_bit(HCI_RAW, &hdev->flags); 498943da25dSMarcel Holtmann 4991da177e4SLinus Torvalds if (hdev->open(hdev)) { 5001da177e4SLinus Torvalds ret = -EIO; 5011da177e4SLinus Torvalds goto done; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5051da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5061da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds //__hci_request(hdev, hci_reset_req, 0, HZ); 50904837f64SMarcel Holtmann ret = __hci_request(hdev, hci_init_req, 0, 51004837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 5111da177e4SLinus Torvalds 5121da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5131da177e4SLinus Torvalds } 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds if (!ret) { 5161da177e4SLinus Torvalds hci_dev_hold(hdev); 5171da177e4SLinus Torvalds set_bit(HCI_UP, &hdev->flags); 5181da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UP); 5191da177e4SLinus Torvalds } else { 5201da177e4SLinus Torvalds /* Init failed, cleanup */ 5211da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5221da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5231da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5261da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds if (hdev->flush) 5291da177e4SLinus Torvalds hdev->flush(hdev); 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds if (hdev->sent_cmd) { 5321da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5331da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5341da177e4SLinus Torvalds } 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds hdev->close(hdev); 5371da177e4SLinus Torvalds hdev->flags = 0; 5381da177e4SLinus Torvalds } 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds done: 5411da177e4SLinus Torvalds hci_req_unlock(hdev); 5421da177e4SLinus Torvalds hci_dev_put(hdev); 5431da177e4SLinus Torvalds return ret; 5441da177e4SLinus Torvalds } 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds static int hci_dev_do_close(struct hci_dev *hdev) 5471da177e4SLinus Torvalds { 5481da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 5491da177e4SLinus Torvalds 5501da177e4SLinus Torvalds hci_req_cancel(hdev, ENODEV); 5511da177e4SLinus Torvalds hci_req_lock(hdev); 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { 5541da177e4SLinus Torvalds hci_req_unlock(hdev); 5551da177e4SLinus Torvalds return 0; 5561da177e4SLinus Torvalds } 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds /* Kill RX and TX tasks */ 5591da177e4SLinus Torvalds tasklet_kill(&hdev->rx_task); 5601da177e4SLinus Torvalds tasklet_kill(&hdev->tx_task); 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 5631da177e4SLinus Torvalds inquiry_cache_flush(hdev); 5641da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 5651da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_DOWN); 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds if (hdev->flush) 5701da177e4SLinus Torvalds hdev->flush(hdev); 5711da177e4SLinus Torvalds 5721da177e4SLinus Torvalds /* Reset device */ 5731da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5741da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 5751da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 5761da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 57704837f64SMarcel Holtmann __hci_request(hdev, hci_reset_req, 0, 57804837f64SMarcel Holtmann msecs_to_jiffies(250)); 5791da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds /* Kill cmd task */ 5831da177e4SLinus Torvalds tasklet_kill(&hdev->cmd_task); 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /* Drop queues */ 5861da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 5871da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 5881da177e4SLinus Torvalds skb_queue_purge(&hdev->raw_q); 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds /* Drop last sent command */ 5911da177e4SLinus Torvalds if (hdev->sent_cmd) { 5921da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 5931da177e4SLinus Torvalds hdev->sent_cmd = NULL; 5941da177e4SLinus Torvalds } 5951da177e4SLinus Torvalds 5961da177e4SLinus Torvalds /* After this point our queues are empty 5971da177e4SLinus Torvalds * and no tasks are scheduled. */ 5981da177e4SLinus Torvalds hdev->close(hdev); 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds /* Clear flags */ 6011da177e4SLinus Torvalds hdev->flags = 0; 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds hci_req_unlock(hdev); 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds hci_dev_put(hdev); 6061da177e4SLinus Torvalds return 0; 6071da177e4SLinus Torvalds } 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvalds int hci_dev_close(__u16 dev) 6101da177e4SLinus Torvalds { 6111da177e4SLinus Torvalds struct hci_dev *hdev; 6121da177e4SLinus Torvalds int err; 6131da177e4SLinus Torvalds 6141da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6151da177e4SLinus Torvalds return -ENODEV; 6161da177e4SLinus Torvalds err = hci_dev_do_close(hdev); 6171da177e4SLinus Torvalds hci_dev_put(hdev); 6181da177e4SLinus Torvalds return err; 6191da177e4SLinus Torvalds } 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds int hci_dev_reset(__u16 dev) 6221da177e4SLinus Torvalds { 6231da177e4SLinus Torvalds struct hci_dev *hdev; 6241da177e4SLinus Torvalds int ret = 0; 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6271da177e4SLinus Torvalds return -ENODEV; 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds hci_req_lock(hdev); 6301da177e4SLinus Torvalds tasklet_disable(&hdev->tx_task); 6311da177e4SLinus Torvalds 6321da177e4SLinus Torvalds if (!test_bit(HCI_UP, &hdev->flags)) 6331da177e4SLinus Torvalds goto done; 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds /* Drop queues */ 6361da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 6371da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 6381da177e4SLinus Torvalds 6391da177e4SLinus Torvalds hci_dev_lock_bh(hdev); 6401da177e4SLinus Torvalds inquiry_cache_flush(hdev); 6411da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 6421da177e4SLinus Torvalds hci_dev_unlock_bh(hdev); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds if (hdev->flush) 6451da177e4SLinus Torvalds hdev->flush(hdev); 6461da177e4SLinus Torvalds 6471da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 6481da177e4SLinus Torvalds hdev->acl_cnt = 0; hdev->sco_cnt = 0; 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) 65104837f64SMarcel Holtmann ret = __hci_request(hdev, hci_reset_req, 0, 65204837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6531da177e4SLinus Torvalds 6541da177e4SLinus Torvalds done: 6551da177e4SLinus Torvalds tasklet_enable(&hdev->tx_task); 6561da177e4SLinus Torvalds hci_req_unlock(hdev); 6571da177e4SLinus Torvalds hci_dev_put(hdev); 6581da177e4SLinus Torvalds return ret; 6591da177e4SLinus Torvalds } 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds int hci_dev_reset_stat(__u16 dev) 6621da177e4SLinus Torvalds { 6631da177e4SLinus Torvalds struct hci_dev *hdev; 6641da177e4SLinus Torvalds int ret = 0; 6651da177e4SLinus Torvalds 6661da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dev))) 6671da177e4SLinus Torvalds return -ENODEV; 6681da177e4SLinus Torvalds 6691da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds hci_dev_put(hdev); 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds return ret; 6741da177e4SLinus Torvalds } 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvalds int hci_dev_cmd(unsigned int cmd, void __user *arg) 6771da177e4SLinus Torvalds { 6781da177e4SLinus Torvalds struct hci_dev *hdev; 6791da177e4SLinus Torvalds struct hci_dev_req dr; 6801da177e4SLinus Torvalds int err = 0; 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds if (copy_from_user(&dr, arg, sizeof(dr))) 6831da177e4SLinus Torvalds return -EFAULT; 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds if (!(hdev = hci_dev_get(dr.dev_id))) 6861da177e4SLinus Torvalds return -ENODEV; 6871da177e4SLinus Torvalds 6881da177e4SLinus Torvalds switch (cmd) { 6891da177e4SLinus Torvalds case HCISETAUTH: 69004837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 69104837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 6921da177e4SLinus Torvalds break; 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds case HCISETENCRYPT: 6951da177e4SLinus Torvalds if (!lmp_encrypt_capable(hdev)) { 6961da177e4SLinus Torvalds err = -EOPNOTSUPP; 6971da177e4SLinus Torvalds break; 6981da177e4SLinus Torvalds } 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds if (!test_bit(HCI_AUTH, &hdev->flags)) { 7011da177e4SLinus Torvalds /* Auth must be enabled first */ 70204837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 70304837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7041da177e4SLinus Torvalds if (err) 7051da177e4SLinus Torvalds break; 7061da177e4SLinus Torvalds } 7071da177e4SLinus Torvalds 70804837f64SMarcel Holtmann err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, 70904837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7101da177e4SLinus Torvalds break; 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds case HCISETSCAN: 71304837f64SMarcel Holtmann err = hci_request(hdev, hci_scan_req, dr.dev_opt, 71404837f64SMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7151da177e4SLinus Torvalds break; 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvalds case HCISETLINKPOL: 718e4e8e37cSMarcel Holtmann err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, 719e4e8e37cSMarcel Holtmann msecs_to_jiffies(HCI_INIT_TIMEOUT)); 7201da177e4SLinus Torvalds break; 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds case HCISETLINKMODE: 723e4e8e37cSMarcel Holtmann hdev->link_mode = ((__u16) dr.dev_opt) & 724e4e8e37cSMarcel Holtmann (HCI_LM_MASTER | HCI_LM_ACCEPT); 725e4e8e37cSMarcel Holtmann break; 726e4e8e37cSMarcel Holtmann 727e4e8e37cSMarcel Holtmann case HCISETPTYPE: 728e4e8e37cSMarcel Holtmann hdev->pkt_type = (__u16) dr.dev_opt; 7291da177e4SLinus Torvalds break; 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds case HCISETACLMTU: 7321da177e4SLinus Torvalds hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); 7331da177e4SLinus Torvalds hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); 7341da177e4SLinus Torvalds break; 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds case HCISETSCOMTU: 7371da177e4SLinus Torvalds hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); 7381da177e4SLinus Torvalds hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); 7391da177e4SLinus Torvalds break; 7401da177e4SLinus Torvalds 7411da177e4SLinus Torvalds default: 7421da177e4SLinus Torvalds err = -EINVAL; 7431da177e4SLinus Torvalds break; 7441da177e4SLinus Torvalds } 745e4e8e37cSMarcel Holtmann 7461da177e4SLinus Torvalds hci_dev_put(hdev); 7471da177e4SLinus Torvalds return err; 7481da177e4SLinus Torvalds } 7491da177e4SLinus Torvalds 7501da177e4SLinus Torvalds int hci_get_dev_list(void __user *arg) 7511da177e4SLinus Torvalds { 7521da177e4SLinus Torvalds struct hci_dev_list_req *dl; 7531da177e4SLinus Torvalds struct hci_dev_req *dr; 7541da177e4SLinus Torvalds struct list_head *p; 7551da177e4SLinus Torvalds int n = 0, size, err; 7561da177e4SLinus Torvalds __u16 dev_num; 7571da177e4SLinus Torvalds 7581da177e4SLinus Torvalds if (get_user(dev_num, (__u16 __user *) arg)) 7591da177e4SLinus Torvalds return -EFAULT; 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) 7621da177e4SLinus Torvalds return -EINVAL; 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds size = sizeof(*dl) + dev_num * sizeof(*dr); 7651da177e4SLinus Torvalds 766c6bf514cSVegard Nossum if (!(dl = kzalloc(size, GFP_KERNEL))) 7671da177e4SLinus Torvalds return -ENOMEM; 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds dr = dl->dev_req; 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds read_lock_bh(&hci_dev_list_lock); 7721da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 7731da177e4SLinus Torvalds struct hci_dev *hdev; 7741da177e4SLinus Torvalds hdev = list_entry(p, struct hci_dev, list); 7751da177e4SLinus Torvalds (dr + n)->dev_id = hdev->id; 7761da177e4SLinus Torvalds (dr + n)->dev_opt = hdev->flags; 7771da177e4SLinus Torvalds if (++n >= dev_num) 7781da177e4SLinus Torvalds break; 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds read_unlock_bh(&hci_dev_list_lock); 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds dl->dev_num = n; 7831da177e4SLinus Torvalds size = sizeof(*dl) + n * sizeof(*dr); 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds err = copy_to_user(arg, dl, size); 7861da177e4SLinus Torvalds kfree(dl); 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds return err ? -EFAULT : 0; 7891da177e4SLinus Torvalds } 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds int hci_get_dev_info(void __user *arg) 7921da177e4SLinus Torvalds { 7931da177e4SLinus Torvalds struct hci_dev *hdev; 7941da177e4SLinus Torvalds struct hci_dev_info di; 7951da177e4SLinus Torvalds int err = 0; 7961da177e4SLinus Torvalds 7971da177e4SLinus Torvalds if (copy_from_user(&di, arg, sizeof(di))) 7981da177e4SLinus Torvalds return -EFAULT; 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds if (!(hdev = hci_dev_get(di.dev_id))) 8011da177e4SLinus Torvalds return -ENODEV; 8021da177e4SLinus Torvalds 8031da177e4SLinus Torvalds strcpy(di.name, hdev->name); 8041da177e4SLinus Torvalds di.bdaddr = hdev->bdaddr; 805943da25dSMarcel Holtmann di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); 8061da177e4SLinus Torvalds di.flags = hdev->flags; 8071da177e4SLinus Torvalds di.pkt_type = hdev->pkt_type; 8081da177e4SLinus Torvalds di.acl_mtu = hdev->acl_mtu; 8091da177e4SLinus Torvalds di.acl_pkts = hdev->acl_pkts; 8101da177e4SLinus Torvalds di.sco_mtu = hdev->sco_mtu; 8111da177e4SLinus Torvalds di.sco_pkts = hdev->sco_pkts; 8121da177e4SLinus Torvalds di.link_policy = hdev->link_policy; 8131da177e4SLinus Torvalds di.link_mode = hdev->link_mode; 8141da177e4SLinus Torvalds 8151da177e4SLinus Torvalds memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); 8161da177e4SLinus Torvalds memcpy(&di.features, &hdev->features, sizeof(di.features)); 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds if (copy_to_user(arg, &di, sizeof(di))) 8191da177e4SLinus Torvalds err = -EFAULT; 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds hci_dev_put(hdev); 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds return err; 8241da177e4SLinus Torvalds } 8251da177e4SLinus Torvalds 8261da177e4SLinus Torvalds /* ---- Interface to HCI drivers ---- */ 8271da177e4SLinus Torvalds 828611b30f7SMarcel Holtmann static int hci_rfkill_set_block(void *data, bool blocked) 829611b30f7SMarcel Holtmann { 830611b30f7SMarcel Holtmann struct hci_dev *hdev = data; 831611b30f7SMarcel Holtmann 832611b30f7SMarcel Holtmann BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); 833611b30f7SMarcel Holtmann 834611b30f7SMarcel Holtmann if (!blocked) 835611b30f7SMarcel Holtmann return 0; 836611b30f7SMarcel Holtmann 837611b30f7SMarcel Holtmann hci_dev_do_close(hdev); 838611b30f7SMarcel Holtmann 839611b30f7SMarcel Holtmann return 0; 840611b30f7SMarcel Holtmann } 841611b30f7SMarcel Holtmann 842611b30f7SMarcel Holtmann static const struct rfkill_ops hci_rfkill_ops = { 843611b30f7SMarcel Holtmann .set_block = hci_rfkill_set_block, 844611b30f7SMarcel Holtmann }; 845611b30f7SMarcel Holtmann 8461da177e4SLinus Torvalds /* Alloc HCI device */ 8471da177e4SLinus Torvalds struct hci_dev *hci_alloc_dev(void) 8481da177e4SLinus Torvalds { 8491da177e4SLinus Torvalds struct hci_dev *hdev; 8501da177e4SLinus Torvalds 85125ea6db0SMarcel Holtmann hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); 8521da177e4SLinus Torvalds if (!hdev) 8531da177e4SLinus Torvalds return NULL; 8541da177e4SLinus Torvalds 8551da177e4SLinus Torvalds skb_queue_head_init(&hdev->driver_init); 8561da177e4SLinus Torvalds 8571da177e4SLinus Torvalds return hdev; 8581da177e4SLinus Torvalds } 8591da177e4SLinus Torvalds EXPORT_SYMBOL(hci_alloc_dev); 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds /* Free HCI device */ 8621da177e4SLinus Torvalds void hci_free_dev(struct hci_dev *hdev) 8631da177e4SLinus Torvalds { 8641da177e4SLinus Torvalds skb_queue_purge(&hdev->driver_init); 8651da177e4SLinus Torvalds 866a91f2e39SMarcel Holtmann /* will free via device release */ 867a91f2e39SMarcel Holtmann put_device(&hdev->dev); 8681da177e4SLinus Torvalds } 8691da177e4SLinus Torvalds EXPORT_SYMBOL(hci_free_dev); 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds /* Register HCI device */ 8721da177e4SLinus Torvalds int hci_register_dev(struct hci_dev *hdev) 8731da177e4SLinus Torvalds { 8741da177e4SLinus Torvalds struct list_head *head = &hci_dev_list, *p; 875ef222013SMarcel Holtmann int i, id = 0; 8761da177e4SLinus Torvalds 877c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d owner %p", hdev, hdev->name, 878c13854ceSMarcel Holtmann hdev->bus, hdev->owner); 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds if (!hdev->open || !hdev->close || !hdev->destruct) 8811da177e4SLinus Torvalds return -EINVAL; 8821da177e4SLinus Torvalds 8831da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 8841da177e4SLinus Torvalds 8851da177e4SLinus Torvalds /* Find first available device id */ 8861da177e4SLinus Torvalds list_for_each(p, &hci_dev_list) { 8871da177e4SLinus Torvalds if (list_entry(p, struct hci_dev, list)->id != id) 8881da177e4SLinus Torvalds break; 8891da177e4SLinus Torvalds head = p; id++; 8901da177e4SLinus Torvalds } 8911da177e4SLinus Torvalds 8921da177e4SLinus Torvalds sprintf(hdev->name, "hci%d", id); 8931da177e4SLinus Torvalds hdev->id = id; 8941da177e4SLinus Torvalds list_add(&hdev->list, head); 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds atomic_set(&hdev->refcnt, 1); 8971da177e4SLinus Torvalds spin_lock_init(&hdev->lock); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds hdev->flags = 0; 9001da177e4SLinus Torvalds hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); 9015b7f9909SMarcel Holtmann hdev->esco_type = (ESCO_HV1); 9021da177e4SLinus Torvalds hdev->link_mode = (HCI_LM_ACCEPT); 9031da177e4SLinus Torvalds 90404837f64SMarcel Holtmann hdev->idle_timeout = 0; 90504837f64SMarcel Holtmann hdev->sniff_max_interval = 800; 90604837f64SMarcel Holtmann hdev->sniff_min_interval = 80; 90704837f64SMarcel Holtmann 9081da177e4SLinus Torvalds tasklet_init(&hdev->cmd_task, hci_cmd_task,(unsigned long) hdev); 9091da177e4SLinus Torvalds tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev); 9101da177e4SLinus Torvalds tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev); 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds skb_queue_head_init(&hdev->rx_q); 9131da177e4SLinus Torvalds skb_queue_head_init(&hdev->cmd_q); 9141da177e4SLinus Torvalds skb_queue_head_init(&hdev->raw_q); 9151da177e4SLinus Torvalds 916ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 917ef222013SMarcel Holtmann hdev->reassembly[i] = NULL; 918ef222013SMarcel Holtmann 9191da177e4SLinus Torvalds init_waitqueue_head(&hdev->req_wait_q); 920a6a67efdSThomas Gleixner mutex_init(&hdev->req_lock); 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds inquiry_cache_init(hdev); 9231da177e4SLinus Torvalds 9241da177e4SLinus Torvalds hci_conn_hash_init(hdev); 9251da177e4SLinus Torvalds 9261da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 9271da177e4SLinus Torvalds 9281da177e4SLinus Torvalds atomic_set(&hdev->promisc, 0); 9291da177e4SLinus Torvalds 9301da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9311da177e4SLinus Torvalds 932f48fd9c8SMarcel Holtmann hdev->workqueue = create_singlethread_workqueue(hdev->name); 933f48fd9c8SMarcel Holtmann if (!hdev->workqueue) 934f48fd9c8SMarcel Holtmann goto nomem; 935f48fd9c8SMarcel Holtmann 9361da177e4SLinus Torvalds hci_register_sysfs(hdev); 9371da177e4SLinus Torvalds 938611b30f7SMarcel Holtmann hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, 939611b30f7SMarcel Holtmann RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, hdev); 940611b30f7SMarcel Holtmann if (hdev->rfkill) { 941611b30f7SMarcel Holtmann if (rfkill_register(hdev->rfkill) < 0) { 942611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 943611b30f7SMarcel Holtmann hdev->rfkill = NULL; 944611b30f7SMarcel Holtmann } 945611b30f7SMarcel Holtmann } 946611b30f7SMarcel Holtmann 9471da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_REG); 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds return id; 950f48fd9c8SMarcel Holtmann 951f48fd9c8SMarcel Holtmann nomem: 952f48fd9c8SMarcel Holtmann write_lock_bh(&hci_dev_list_lock); 953f48fd9c8SMarcel Holtmann list_del(&hdev->list); 954f48fd9c8SMarcel Holtmann write_unlock_bh(&hci_dev_list_lock); 955f48fd9c8SMarcel Holtmann 956f48fd9c8SMarcel Holtmann return -ENOMEM; 9571da177e4SLinus Torvalds } 9581da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_dev); 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds /* Unregister HCI device */ 9611da177e4SLinus Torvalds int hci_unregister_dev(struct hci_dev *hdev) 9621da177e4SLinus Torvalds { 963ef222013SMarcel Holtmann int i; 964ef222013SMarcel Holtmann 965c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds write_lock_bh(&hci_dev_list_lock); 9681da177e4SLinus Torvalds list_del(&hdev->list); 9691da177e4SLinus Torvalds write_unlock_bh(&hci_dev_list_lock); 9701da177e4SLinus Torvalds 9711da177e4SLinus Torvalds hci_dev_do_close(hdev); 9721da177e4SLinus Torvalds 973ef222013SMarcel Holtmann for (i = 0; i < 3; i++) 974ef222013SMarcel Holtmann kfree_skb(hdev->reassembly[i]); 975ef222013SMarcel Holtmann 9761da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UNREG); 9771da177e4SLinus Torvalds 978611b30f7SMarcel Holtmann if (hdev->rfkill) { 979611b30f7SMarcel Holtmann rfkill_unregister(hdev->rfkill); 980611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 981611b30f7SMarcel Holtmann } 982611b30f7SMarcel Holtmann 983147e2d59SDave Young hci_unregister_sysfs(hdev); 984147e2d59SDave Young 985f48fd9c8SMarcel Holtmann destroy_workqueue(hdev->workqueue); 986f48fd9c8SMarcel Holtmann 9871da177e4SLinus Torvalds __hci_dev_put(hdev); 988ef222013SMarcel Holtmann 9891da177e4SLinus Torvalds return 0; 9901da177e4SLinus Torvalds } 9911da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_dev); 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds /* Suspend HCI device */ 9941da177e4SLinus Torvalds int hci_suspend_dev(struct hci_dev *hdev) 9951da177e4SLinus Torvalds { 9961da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_SUSPEND); 9971da177e4SLinus Torvalds return 0; 9981da177e4SLinus Torvalds } 9991da177e4SLinus Torvalds EXPORT_SYMBOL(hci_suspend_dev); 10001da177e4SLinus Torvalds 10011da177e4SLinus Torvalds /* Resume HCI device */ 10021da177e4SLinus Torvalds int hci_resume_dev(struct hci_dev *hdev) 10031da177e4SLinus Torvalds { 10041da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_RESUME); 10051da177e4SLinus Torvalds return 0; 10061da177e4SLinus Torvalds } 10071da177e4SLinus Torvalds EXPORT_SYMBOL(hci_resume_dev); 10081da177e4SLinus Torvalds 100976bca880SMarcel Holtmann /* Receive frame from HCI drivers */ 101076bca880SMarcel Holtmann int hci_recv_frame(struct sk_buff *skb) 101176bca880SMarcel Holtmann { 101276bca880SMarcel Holtmann struct hci_dev *hdev = (struct hci_dev *) skb->dev; 101376bca880SMarcel Holtmann if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 101476bca880SMarcel Holtmann && !test_bit(HCI_INIT, &hdev->flags))) { 101576bca880SMarcel Holtmann kfree_skb(skb); 101676bca880SMarcel Holtmann return -ENXIO; 101776bca880SMarcel Holtmann } 101876bca880SMarcel Holtmann 101976bca880SMarcel Holtmann /* Incomming skb */ 102076bca880SMarcel Holtmann bt_cb(skb)->incoming = 1; 102176bca880SMarcel Holtmann 102276bca880SMarcel Holtmann /* Time stamp */ 102376bca880SMarcel Holtmann __net_timestamp(skb); 102476bca880SMarcel Holtmann 102576bca880SMarcel Holtmann /* Queue frame for rx task */ 102676bca880SMarcel Holtmann skb_queue_tail(&hdev->rx_q, skb); 1027c78ae283SMarcel Holtmann tasklet_schedule(&hdev->rx_task); 1028c78ae283SMarcel Holtmann 102976bca880SMarcel Holtmann return 0; 103076bca880SMarcel Holtmann } 103176bca880SMarcel Holtmann EXPORT_SYMBOL(hci_recv_frame); 103276bca880SMarcel Holtmann 1033ef222013SMarcel Holtmann /* Receive packet type fragment */ 1034ef222013SMarcel Holtmann #define __reassembly(hdev, type) ((hdev)->reassembly[(type) - 2]) 1035ef222013SMarcel Holtmann 1036ef222013SMarcel Holtmann int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 1037ef222013SMarcel Holtmann { 1038ef222013SMarcel Holtmann if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) 1039ef222013SMarcel Holtmann return -EILSEQ; 1040ef222013SMarcel Holtmann 1041ef222013SMarcel Holtmann while (count) { 1042ef222013SMarcel Holtmann struct sk_buff *skb = __reassembly(hdev, type); 1043ef222013SMarcel Holtmann struct { int expect; } *scb; 1044ef222013SMarcel Holtmann int len = 0; 1045ef222013SMarcel Holtmann 1046ef222013SMarcel Holtmann if (!skb) { 1047ef222013SMarcel Holtmann /* Start of the frame */ 1048ef222013SMarcel Holtmann 1049ef222013SMarcel Holtmann switch (type) { 1050ef222013SMarcel Holtmann case HCI_EVENT_PKT: 1051ef222013SMarcel Holtmann if (count >= HCI_EVENT_HDR_SIZE) { 1052ef222013SMarcel Holtmann struct hci_event_hdr *h = data; 1053ef222013SMarcel Holtmann len = HCI_EVENT_HDR_SIZE + h->plen; 1054ef222013SMarcel Holtmann } else 1055ef222013SMarcel Holtmann return -EILSEQ; 1056ef222013SMarcel Holtmann break; 1057ef222013SMarcel Holtmann 1058ef222013SMarcel Holtmann case HCI_ACLDATA_PKT: 1059ef222013SMarcel Holtmann if (count >= HCI_ACL_HDR_SIZE) { 1060ef222013SMarcel Holtmann struct hci_acl_hdr *h = data; 1061ef222013SMarcel Holtmann len = HCI_ACL_HDR_SIZE + __le16_to_cpu(h->dlen); 1062ef222013SMarcel Holtmann } else 1063ef222013SMarcel Holtmann return -EILSEQ; 1064ef222013SMarcel Holtmann break; 1065ef222013SMarcel Holtmann 1066ef222013SMarcel Holtmann case HCI_SCODATA_PKT: 1067ef222013SMarcel Holtmann if (count >= HCI_SCO_HDR_SIZE) { 1068ef222013SMarcel Holtmann struct hci_sco_hdr *h = data; 1069ef222013SMarcel Holtmann len = HCI_SCO_HDR_SIZE + h->dlen; 1070ef222013SMarcel Holtmann } else 1071ef222013SMarcel Holtmann return -EILSEQ; 1072ef222013SMarcel Holtmann break; 1073ef222013SMarcel Holtmann } 1074ef222013SMarcel Holtmann 1075ef222013SMarcel Holtmann skb = bt_skb_alloc(len, GFP_ATOMIC); 1076ef222013SMarcel Holtmann if (!skb) { 1077ef222013SMarcel Holtmann BT_ERR("%s no memory for packet", hdev->name); 1078ef222013SMarcel Holtmann return -ENOMEM; 1079ef222013SMarcel Holtmann } 1080ef222013SMarcel Holtmann 1081ef222013SMarcel Holtmann skb->dev = (void *) hdev; 1082ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1083ef222013SMarcel Holtmann 1084ef222013SMarcel Holtmann __reassembly(hdev, type) = skb; 1085ef222013SMarcel Holtmann 1086ef222013SMarcel Holtmann scb = (void *) skb->cb; 1087ef222013SMarcel Holtmann scb->expect = len; 1088ef222013SMarcel Holtmann } else { 1089ef222013SMarcel Holtmann /* Continuation */ 1090ef222013SMarcel Holtmann 1091ef222013SMarcel Holtmann scb = (void *) skb->cb; 1092ef222013SMarcel Holtmann len = scb->expect; 1093ef222013SMarcel Holtmann } 1094ef222013SMarcel Holtmann 1095ef222013SMarcel Holtmann len = min(len, count); 1096ef222013SMarcel Holtmann 1097ef222013SMarcel Holtmann memcpy(skb_put(skb, len), data, len); 1098ef222013SMarcel Holtmann 1099ef222013SMarcel Holtmann scb->expect -= len; 1100ef222013SMarcel Holtmann 1101ef222013SMarcel Holtmann if (scb->expect == 0) { 1102ef222013SMarcel Holtmann /* Complete frame */ 1103ef222013SMarcel Holtmann 1104ef222013SMarcel Holtmann __reassembly(hdev, type) = NULL; 1105ef222013SMarcel Holtmann 1106ef222013SMarcel Holtmann bt_cb(skb)->pkt_type = type; 1107ef222013SMarcel Holtmann hci_recv_frame(skb); 1108ef222013SMarcel Holtmann } 1109ef222013SMarcel Holtmann 1110ef222013SMarcel Holtmann count -= len; data += len; 1111ef222013SMarcel Holtmann } 1112ef222013SMarcel Holtmann 1113ef222013SMarcel Holtmann return 0; 1114ef222013SMarcel Holtmann } 1115ef222013SMarcel Holtmann EXPORT_SYMBOL(hci_recv_fragment); 1116ef222013SMarcel Holtmann 11171da177e4SLinus Torvalds /* ---- Interface to upper protocols ---- */ 11181da177e4SLinus Torvalds 11191da177e4SLinus Torvalds /* Register/Unregister protocols. 11201da177e4SLinus Torvalds * hci_task_lock is used to ensure that no tasks are running. */ 11211da177e4SLinus Torvalds int hci_register_proto(struct hci_proto *hp) 11221da177e4SLinus Torvalds { 11231da177e4SLinus Torvalds int err = 0; 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11281da177e4SLinus Torvalds return -EINVAL; 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11311da177e4SLinus Torvalds 11321da177e4SLinus Torvalds if (!hci_proto[hp->id]) 11331da177e4SLinus Torvalds hci_proto[hp->id] = hp; 11341da177e4SLinus Torvalds else 11351da177e4SLinus Torvalds err = -EEXIST; 11361da177e4SLinus Torvalds 11371da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11381da177e4SLinus Torvalds 11391da177e4SLinus Torvalds return err; 11401da177e4SLinus Torvalds } 11411da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_proto); 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds int hci_unregister_proto(struct hci_proto *hp) 11441da177e4SLinus Torvalds { 11451da177e4SLinus Torvalds int err = 0; 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds BT_DBG("%p name %s id %d", hp, hp->name, hp->id); 11481da177e4SLinus Torvalds 11491da177e4SLinus Torvalds if (hp->id >= HCI_MAX_PROTO) 11501da177e4SLinus Torvalds return -EINVAL; 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds write_lock_bh(&hci_task_lock); 11531da177e4SLinus Torvalds 11541da177e4SLinus Torvalds if (hci_proto[hp->id]) 11551da177e4SLinus Torvalds hci_proto[hp->id] = NULL; 11561da177e4SLinus Torvalds else 11571da177e4SLinus Torvalds err = -ENOENT; 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds write_unlock_bh(&hci_task_lock); 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds return err; 11621da177e4SLinus Torvalds } 11631da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_proto); 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds int hci_register_cb(struct hci_cb *cb) 11661da177e4SLinus Torvalds { 11671da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11701da177e4SLinus Torvalds list_add(&cb->list, &hci_cb_list); 11711da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds return 0; 11741da177e4SLinus Torvalds } 11751da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_cb); 11761da177e4SLinus Torvalds 11771da177e4SLinus Torvalds int hci_unregister_cb(struct hci_cb *cb) 11781da177e4SLinus Torvalds { 11791da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 11801da177e4SLinus Torvalds 11811da177e4SLinus Torvalds write_lock_bh(&hci_cb_list_lock); 11821da177e4SLinus Torvalds list_del(&cb->list); 11831da177e4SLinus Torvalds write_unlock_bh(&hci_cb_list_lock); 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvalds return 0; 11861da177e4SLinus Torvalds } 11871da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_cb); 11881da177e4SLinus Torvalds 11891da177e4SLinus Torvalds static int hci_send_frame(struct sk_buff *skb) 11901da177e4SLinus Torvalds { 11911da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) skb->dev; 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvalds if (!hdev) { 11941da177e4SLinus Torvalds kfree_skb(skb); 11951da177e4SLinus Torvalds return -ENODEV; 11961da177e4SLinus Torvalds } 11971da177e4SLinus Torvalds 11980d48d939SMarcel Holtmann BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); 11991da177e4SLinus Torvalds 12001da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 12011da177e4SLinus Torvalds /* Time stamp */ 1202a61bbcf2SPatrick McHardy __net_timestamp(skb); 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 12051da177e4SLinus Torvalds } 12061da177e4SLinus Torvalds 12071da177e4SLinus Torvalds /* Get rid of skb owner, prior to sending to the driver. */ 12081da177e4SLinus Torvalds skb_orphan(skb); 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds return hdev->send(skb); 12111da177e4SLinus Torvalds } 12121da177e4SLinus Torvalds 12131da177e4SLinus Torvalds /* Send HCI command */ 1214a9de9248SMarcel Holtmann int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) 12151da177e4SLinus Torvalds { 12161da177e4SLinus Torvalds int len = HCI_COMMAND_HDR_SIZE + plen; 12171da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12181da177e4SLinus Torvalds struct sk_buff *skb; 12191da177e4SLinus Torvalds 1220a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); 12211da177e4SLinus Torvalds 12221da177e4SLinus Torvalds skb = bt_skb_alloc(len, GFP_ATOMIC); 12231da177e4SLinus Torvalds if (!skb) { 1224ef222013SMarcel Holtmann BT_ERR("%s no memory for command", hdev->name); 12251da177e4SLinus Torvalds return -ENOMEM; 12261da177e4SLinus Torvalds } 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); 1229a9de9248SMarcel Holtmann hdr->opcode = cpu_to_le16(opcode); 12301da177e4SLinus Torvalds hdr->plen = plen; 12311da177e4SLinus Torvalds 12321da177e4SLinus Torvalds if (plen) 12331da177e4SLinus Torvalds memcpy(skb_put(skb, plen), param, plen); 12341da177e4SLinus Torvalds 12351da177e4SLinus Torvalds BT_DBG("skb len %d", skb->len); 12361da177e4SLinus Torvalds 12370d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 12381da177e4SLinus Torvalds skb->dev = (void *) hdev; 1239c78ae283SMarcel Holtmann 12401da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 1241c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 12421da177e4SLinus Torvalds 12431da177e4SLinus Torvalds return 0; 12441da177e4SLinus Torvalds } 12451da177e4SLinus Torvalds 12461da177e4SLinus Torvalds /* Get data from the previously sent command */ 1247a9de9248SMarcel Holtmann void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) 12481da177e4SLinus Torvalds { 12491da177e4SLinus Torvalds struct hci_command_hdr *hdr; 12501da177e4SLinus Torvalds 12511da177e4SLinus Torvalds if (!hdev->sent_cmd) 12521da177e4SLinus Torvalds return NULL; 12531da177e4SLinus Torvalds 12541da177e4SLinus Torvalds hdr = (void *) hdev->sent_cmd->data; 12551da177e4SLinus Torvalds 1256a9de9248SMarcel Holtmann if (hdr->opcode != cpu_to_le16(opcode)) 12571da177e4SLinus Torvalds return NULL; 12581da177e4SLinus Torvalds 1259a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x", hdev->name, opcode); 12601da177e4SLinus Torvalds 12611da177e4SLinus Torvalds return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; 12621da177e4SLinus Torvalds } 12631da177e4SLinus Torvalds 12641da177e4SLinus Torvalds /* Send ACL data */ 12651da177e4SLinus Torvalds static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) 12661da177e4SLinus Torvalds { 12671da177e4SLinus Torvalds struct hci_acl_hdr *hdr; 12681da177e4SLinus Torvalds int len = skb->len; 12691da177e4SLinus Torvalds 1270badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_ACL_HDR_SIZE); 1271badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 12729c70220bSArnaldo Carvalho de Melo hdr = (struct hci_acl_hdr *)skb_transport_header(skb); 1273aca3192cSYOSHIFUJI Hideaki hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); 1274aca3192cSYOSHIFUJI Hideaki hdr->dlen = cpu_to_le16(len); 12751da177e4SLinus Torvalds } 12761da177e4SLinus Torvalds 12779a9c6a34SGustavo F. Padovan void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags) 12781da177e4SLinus Torvalds { 12791da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 12801da177e4SLinus Torvalds struct sk_buff *list; 12811da177e4SLinus Torvalds 12821da177e4SLinus Torvalds BT_DBG("%s conn %p flags 0x%x", hdev->name, conn, flags); 12831da177e4SLinus Torvalds 12841da177e4SLinus Torvalds skb->dev = (void *) hdev; 12850d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 12861da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_START); 12871da177e4SLinus Torvalds 12881da177e4SLinus Torvalds if (!(list = skb_shinfo(skb)->frag_list)) { 12891da177e4SLinus Torvalds /* Non fragmented */ 12901da177e4SLinus Torvalds BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 12931da177e4SLinus Torvalds } else { 12941da177e4SLinus Torvalds /* Fragmented */ 12951da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 12961da177e4SLinus Torvalds 12971da177e4SLinus Torvalds skb_shinfo(skb)->frag_list = NULL; 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds /* Queue all fragments atomically */ 13001da177e4SLinus Torvalds spin_lock_bh(&conn->data_q.lock); 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 13031da177e4SLinus Torvalds do { 13041da177e4SLinus Torvalds skb = list; list = list->next; 13051da177e4SLinus Torvalds 13061da177e4SLinus Torvalds skb->dev = (void *) hdev; 13070d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 13081da177e4SLinus Torvalds hci_add_acl_hdr(skb, conn->handle, flags | ACL_CONT); 13091da177e4SLinus Torvalds 13101da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 13111da177e4SLinus Torvalds 13121da177e4SLinus Torvalds __skb_queue_tail(&conn->data_q, skb); 13131da177e4SLinus Torvalds } while (list); 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds spin_unlock_bh(&conn->data_q.lock); 13161da177e4SLinus Torvalds } 13171da177e4SLinus Torvalds 1318c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 1319c78ae283SMarcel Holtmann 13209a9c6a34SGustavo F. Padovan return; 13211da177e4SLinus Torvalds } 13221da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_acl); 13231da177e4SLinus Torvalds 13241da177e4SLinus Torvalds /* Send SCO data */ 13250d861d8bSGustavo F. Padovan void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) 13261da177e4SLinus Torvalds { 13271da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 13281da177e4SLinus Torvalds struct hci_sco_hdr hdr; 13291da177e4SLinus Torvalds 13301da177e4SLinus Torvalds BT_DBG("%s len %d", hdev->name, skb->len); 13311da177e4SLinus Torvalds 1332aca3192cSYOSHIFUJI Hideaki hdr.handle = cpu_to_le16(conn->handle); 13331da177e4SLinus Torvalds hdr.dlen = skb->len; 13341da177e4SLinus Torvalds 1335badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_SCO_HDR_SIZE); 1336badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 13379c70220bSArnaldo Carvalho de Melo memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); 13381da177e4SLinus Torvalds 13391da177e4SLinus Torvalds skb->dev = (void *) hdev; 13400d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 1341c78ae283SMarcel Holtmann 13421da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 1343c78ae283SMarcel Holtmann tasklet_schedule(&hdev->tx_task); 13441da177e4SLinus Torvalds } 13451da177e4SLinus Torvalds EXPORT_SYMBOL(hci_send_sco); 13461da177e4SLinus Torvalds 13471da177e4SLinus Torvalds /* ---- HCI TX task (outgoing data) ---- */ 13481da177e4SLinus Torvalds 13491da177e4SLinus Torvalds /* HCI Connection scheduler */ 13501da177e4SLinus Torvalds static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote) 13511da177e4SLinus Torvalds { 13521da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13531da177e4SLinus Torvalds struct hci_conn *conn = NULL; 13541da177e4SLinus Torvalds int num = 0, min = ~0; 13551da177e4SLinus Torvalds struct list_head *p; 13561da177e4SLinus Torvalds 13571da177e4SLinus Torvalds /* We don't have to lock device here. Connections are always 13581da177e4SLinus Torvalds * added and removed with TX task disabled. */ 13591da177e4SLinus Torvalds list_for_each(p, &h->list) { 13601da177e4SLinus Torvalds struct hci_conn *c; 13611da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13621da177e4SLinus Torvalds 1363769be974SMarcel Holtmann if (c->type != type || skb_queue_empty(&c->data_q)) 13641da177e4SLinus Torvalds continue; 1365769be974SMarcel Holtmann 1366769be974SMarcel Holtmann if (c->state != BT_CONNECTED && c->state != BT_CONFIG) 1367769be974SMarcel Holtmann continue; 1368769be974SMarcel Holtmann 13691da177e4SLinus Torvalds num++; 13701da177e4SLinus Torvalds 13711da177e4SLinus Torvalds if (c->sent < min) { 13721da177e4SLinus Torvalds min = c->sent; 13731da177e4SLinus Torvalds conn = c; 13741da177e4SLinus Torvalds } 13751da177e4SLinus Torvalds } 13761da177e4SLinus Torvalds 13771da177e4SLinus Torvalds if (conn) { 13781da177e4SLinus Torvalds int cnt = (type == ACL_LINK ? hdev->acl_cnt : hdev->sco_cnt); 13791da177e4SLinus Torvalds int q = cnt / num; 13801da177e4SLinus Torvalds *quote = q ? q : 1; 13811da177e4SLinus Torvalds } else 13821da177e4SLinus Torvalds *quote = 0; 13831da177e4SLinus Torvalds 13841da177e4SLinus Torvalds BT_DBG("conn %p quote %d", conn, *quote); 13851da177e4SLinus Torvalds return conn; 13861da177e4SLinus Torvalds } 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvalds static inline void hci_acl_tx_to(struct hci_dev *hdev) 13891da177e4SLinus Torvalds { 13901da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 13911da177e4SLinus Torvalds struct list_head *p; 13921da177e4SLinus Torvalds struct hci_conn *c; 13931da177e4SLinus Torvalds 13941da177e4SLinus Torvalds BT_ERR("%s ACL tx timeout", hdev->name); 13951da177e4SLinus Torvalds 13961da177e4SLinus Torvalds /* Kill stalled connections */ 13971da177e4SLinus Torvalds list_for_each(p, &h->list) { 13981da177e4SLinus Torvalds c = list_entry(p, struct hci_conn, list); 13991da177e4SLinus Torvalds if (c->type == ACL_LINK && c->sent) { 14001da177e4SLinus Torvalds BT_ERR("%s killing stalled ACL connection %s", 14011da177e4SLinus Torvalds hdev->name, batostr(&c->dst)); 14021da177e4SLinus Torvalds hci_acl_disconn(c, 0x13); 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds } 14051da177e4SLinus Torvalds } 14061da177e4SLinus Torvalds 14071da177e4SLinus Torvalds static inline void hci_sched_acl(struct hci_dev *hdev) 14081da177e4SLinus Torvalds { 14091da177e4SLinus Torvalds struct hci_conn *conn; 14101da177e4SLinus Torvalds struct sk_buff *skb; 14111da177e4SLinus Torvalds int quote; 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14141da177e4SLinus Torvalds 14151da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 14161da177e4SLinus Torvalds /* ACL tx timeout must be longer than maximum 14171da177e4SLinus Torvalds * link supervision timeout (40.9 seconds) */ 141882453021SS.Çağlar Onur if (!hdev->acl_cnt && time_after(jiffies, hdev->acl_last_tx + HZ * 45)) 14191da177e4SLinus Torvalds hci_acl_tx_to(hdev); 14201da177e4SLinus Torvalds } 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) { 14231da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14241da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 142504837f64SMarcel Holtmann 142604837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 142704837f64SMarcel Holtmann 14281da177e4SLinus Torvalds hci_send_frame(skb); 14291da177e4SLinus Torvalds hdev->acl_last_tx = jiffies; 14301da177e4SLinus Torvalds 14311da177e4SLinus Torvalds hdev->acl_cnt--; 14321da177e4SLinus Torvalds conn->sent++; 14331da177e4SLinus Torvalds } 14341da177e4SLinus Torvalds } 14351da177e4SLinus Torvalds } 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds /* Schedule SCO */ 14381da177e4SLinus Torvalds static inline void hci_sched_sco(struct hci_dev *hdev) 14391da177e4SLinus Torvalds { 14401da177e4SLinus Torvalds struct hci_conn *conn; 14411da177e4SLinus Torvalds struct sk_buff *skb; 14421da177e4SLinus Torvalds int quote; 14431da177e4SLinus Torvalds 14441da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 14451da177e4SLinus Torvalds 14461da177e4SLinus Torvalds while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { 14471da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 14481da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 14491da177e4SLinus Torvalds hci_send_frame(skb); 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds conn->sent++; 14521da177e4SLinus Torvalds if (conn->sent == ~0) 14531da177e4SLinus Torvalds conn->sent = 0; 14541da177e4SLinus Torvalds } 14551da177e4SLinus Torvalds } 14561da177e4SLinus Torvalds } 14571da177e4SLinus Torvalds 1458b6a0dc82SMarcel Holtmann static inline void hci_sched_esco(struct hci_dev *hdev) 1459b6a0dc82SMarcel Holtmann { 1460b6a0dc82SMarcel Holtmann struct hci_conn *conn; 1461b6a0dc82SMarcel Holtmann struct sk_buff *skb; 1462b6a0dc82SMarcel Holtmann int quote; 1463b6a0dc82SMarcel Holtmann 1464b6a0dc82SMarcel Holtmann BT_DBG("%s", hdev->name); 1465b6a0dc82SMarcel Holtmann 1466b6a0dc82SMarcel Holtmann while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, "e))) { 1467b6a0dc82SMarcel Holtmann while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 1468b6a0dc82SMarcel Holtmann BT_DBG("skb %p len %d", skb, skb->len); 1469b6a0dc82SMarcel Holtmann hci_send_frame(skb); 1470b6a0dc82SMarcel Holtmann 1471b6a0dc82SMarcel Holtmann conn->sent++; 1472b6a0dc82SMarcel Holtmann if (conn->sent == ~0) 1473b6a0dc82SMarcel Holtmann conn->sent = 0; 1474b6a0dc82SMarcel Holtmann } 1475b6a0dc82SMarcel Holtmann } 1476b6a0dc82SMarcel Holtmann } 1477b6a0dc82SMarcel Holtmann 14781da177e4SLinus Torvalds static void hci_tx_task(unsigned long arg) 14791da177e4SLinus Torvalds { 14801da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 14811da177e4SLinus Torvalds struct sk_buff *skb; 14821da177e4SLinus Torvalds 14831da177e4SLinus Torvalds read_lock(&hci_task_lock); 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds BT_DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt); 14861da177e4SLinus Torvalds 14871da177e4SLinus Torvalds /* Schedule queues and send stuff to HCI driver */ 14881da177e4SLinus Torvalds 14891da177e4SLinus Torvalds hci_sched_acl(hdev); 14901da177e4SLinus Torvalds 14911da177e4SLinus Torvalds hci_sched_sco(hdev); 14921da177e4SLinus Torvalds 1493b6a0dc82SMarcel Holtmann hci_sched_esco(hdev); 1494b6a0dc82SMarcel Holtmann 14951da177e4SLinus Torvalds /* Send next queued raw (unknown type) packet */ 14961da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->raw_q))) 14971da177e4SLinus Torvalds hci_send_frame(skb); 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds read_unlock(&hci_task_lock); 15001da177e4SLinus Torvalds } 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds /* ----- HCI RX task (incoming data proccessing) ----- */ 15031da177e4SLinus Torvalds 15041da177e4SLinus Torvalds /* ACL data packet */ 15051da177e4SLinus Torvalds static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) 15061da177e4SLinus Torvalds { 15071da177e4SLinus Torvalds struct hci_acl_hdr *hdr = (void *) skb->data; 15081da177e4SLinus Torvalds struct hci_conn *conn; 15091da177e4SLinus Torvalds __u16 handle, flags; 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds skb_pull(skb, HCI_ACL_HDR_SIZE); 15121da177e4SLinus Torvalds 15131da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15141da177e4SLinus Torvalds flags = hci_flags(handle); 15151da177e4SLinus Torvalds handle = hci_handle(handle); 15161da177e4SLinus Torvalds 15171da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags); 15181da177e4SLinus Torvalds 15191da177e4SLinus Torvalds hdev->stat.acl_rx++; 15201da177e4SLinus Torvalds 15211da177e4SLinus Torvalds hci_dev_lock(hdev); 15221da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15231da177e4SLinus Torvalds hci_dev_unlock(hdev); 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds if (conn) { 15261da177e4SLinus Torvalds register struct hci_proto *hp; 15271da177e4SLinus Torvalds 152804837f64SMarcel Holtmann hci_conn_enter_active_mode(conn); 152904837f64SMarcel Holtmann 15301da177e4SLinus Torvalds /* Send to upper protocol */ 15311da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_L2CAP]) && hp->recv_acldata) { 15321da177e4SLinus Torvalds hp->recv_acldata(conn, skb, flags); 15331da177e4SLinus Torvalds return; 15341da177e4SLinus Torvalds } 15351da177e4SLinus Torvalds } else { 15361da177e4SLinus Torvalds BT_ERR("%s ACL packet for unknown connection handle %d", 15371da177e4SLinus Torvalds hdev->name, handle); 15381da177e4SLinus Torvalds } 15391da177e4SLinus Torvalds 15401da177e4SLinus Torvalds kfree_skb(skb); 15411da177e4SLinus Torvalds } 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvalds /* SCO data packet */ 15441da177e4SLinus Torvalds static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) 15451da177e4SLinus Torvalds { 15461da177e4SLinus Torvalds struct hci_sco_hdr *hdr = (void *) skb->data; 15471da177e4SLinus Torvalds struct hci_conn *conn; 15481da177e4SLinus Torvalds __u16 handle; 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds skb_pull(skb, HCI_SCO_HDR_SIZE); 15511da177e4SLinus Torvalds 15521da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); 15551da177e4SLinus Torvalds 15561da177e4SLinus Torvalds hdev->stat.sco_rx++; 15571da177e4SLinus Torvalds 15581da177e4SLinus Torvalds hci_dev_lock(hdev); 15591da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 15601da177e4SLinus Torvalds hci_dev_unlock(hdev); 15611da177e4SLinus Torvalds 15621da177e4SLinus Torvalds if (conn) { 15631da177e4SLinus Torvalds register struct hci_proto *hp; 15641da177e4SLinus Torvalds 15651da177e4SLinus Torvalds /* Send to upper protocol */ 15661da177e4SLinus Torvalds if ((hp = hci_proto[HCI_PROTO_SCO]) && hp->recv_scodata) { 15671da177e4SLinus Torvalds hp->recv_scodata(conn, skb); 15681da177e4SLinus Torvalds return; 15691da177e4SLinus Torvalds } 15701da177e4SLinus Torvalds } else { 15711da177e4SLinus Torvalds BT_ERR("%s SCO packet for unknown connection handle %d", 15721da177e4SLinus Torvalds hdev->name, handle); 15731da177e4SLinus Torvalds } 15741da177e4SLinus Torvalds 15751da177e4SLinus Torvalds kfree_skb(skb); 15761da177e4SLinus Torvalds } 15771da177e4SLinus Torvalds 15786516455dSMarcel Holtmann static void hci_rx_task(unsigned long arg) 15791da177e4SLinus Torvalds { 15801da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 15811da177e4SLinus Torvalds struct sk_buff *skb; 15821da177e4SLinus Torvalds 15831da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds read_lock(&hci_task_lock); 15861da177e4SLinus Torvalds 15871da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->rx_q))) { 15881da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 15891da177e4SLinus Torvalds /* Send copy to the sockets */ 15901da177e4SLinus Torvalds hci_send_to_sock(hdev, skb); 15911da177e4SLinus Torvalds } 15921da177e4SLinus Torvalds 15931da177e4SLinus Torvalds if (test_bit(HCI_RAW, &hdev->flags)) { 15941da177e4SLinus Torvalds kfree_skb(skb); 15951da177e4SLinus Torvalds continue; 15961da177e4SLinus Torvalds } 15971da177e4SLinus Torvalds 15981da177e4SLinus Torvalds if (test_bit(HCI_INIT, &hdev->flags)) { 15991da177e4SLinus Torvalds /* Don't process data packets in this states. */ 16000d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 16011da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 16021da177e4SLinus Torvalds case HCI_SCODATA_PKT: 16031da177e4SLinus Torvalds kfree_skb(skb); 16041da177e4SLinus Torvalds continue; 16053ff50b79SStephen Hemminger } 16061da177e4SLinus Torvalds } 16071da177e4SLinus Torvalds 16081da177e4SLinus Torvalds /* Process frame */ 16090d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 16101da177e4SLinus Torvalds case HCI_EVENT_PKT: 16111da177e4SLinus Torvalds hci_event_packet(hdev, skb); 16121da177e4SLinus Torvalds break; 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 16151da177e4SLinus Torvalds BT_DBG("%s ACL data packet", hdev->name); 16161da177e4SLinus Torvalds hci_acldata_packet(hdev, skb); 16171da177e4SLinus Torvalds break; 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvalds case HCI_SCODATA_PKT: 16201da177e4SLinus Torvalds BT_DBG("%s SCO data packet", hdev->name); 16211da177e4SLinus Torvalds hci_scodata_packet(hdev, skb); 16221da177e4SLinus Torvalds break; 16231da177e4SLinus Torvalds 16241da177e4SLinus Torvalds default: 16251da177e4SLinus Torvalds kfree_skb(skb); 16261da177e4SLinus Torvalds break; 16271da177e4SLinus Torvalds } 16281da177e4SLinus Torvalds } 16291da177e4SLinus Torvalds 16301da177e4SLinus Torvalds read_unlock(&hci_task_lock); 16311da177e4SLinus Torvalds } 16321da177e4SLinus Torvalds 16331da177e4SLinus Torvalds static void hci_cmd_task(unsigned long arg) 16341da177e4SLinus Torvalds { 16351da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) arg; 16361da177e4SLinus Torvalds struct sk_buff *skb; 16371da177e4SLinus Torvalds 16381da177e4SLinus Torvalds BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); 16391da177e4SLinus Torvalds 164082453021SS.Çağlar Onur if (!atomic_read(&hdev->cmd_cnt) && time_after(jiffies, hdev->cmd_last_tx + HZ)) { 16411da177e4SLinus Torvalds BT_ERR("%s command tx timeout", hdev->name); 16421da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 16431da177e4SLinus Torvalds } 16441da177e4SLinus Torvalds 16451da177e4SLinus Torvalds /* Send queued commands */ 16461da177e4SLinus Torvalds if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) { 16471da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 16481da177e4SLinus Torvalds 16491da177e4SLinus Torvalds if ((hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC))) { 16501da177e4SLinus Torvalds atomic_dec(&hdev->cmd_cnt); 16511da177e4SLinus Torvalds hci_send_frame(skb); 16521da177e4SLinus Torvalds hdev->cmd_last_tx = jiffies; 16531da177e4SLinus Torvalds } else { 16541da177e4SLinus Torvalds skb_queue_head(&hdev->cmd_q, skb); 1655c78ae283SMarcel Holtmann tasklet_schedule(&hdev->cmd_task); 16561da177e4SLinus Torvalds } 16571da177e4SLinus Torvalds } 16581da177e4SLinus Torvalds } 1659