hci_core.c
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上传日期:2013-02-24
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- /*
- BlueZ - Bluetooth protocol stack for Linux
- Copyright (C) 2000-2001 Qualcomm Incorporated
- Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License version 2 as
- published by the Free Software Foundation;
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
- IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
- CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
- COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
- SOFTWARE IS DISCLAIMED.
- */
- /*
- * BlueZ HCI Core.
- *
- * $Id: hci_core.c,v 1.22 2001/08/03 04:19:50 maxk Exp $
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/types.h>
- #include <linux/errno.h>
- #include <linux/kernel.h>
- #include <linux/major.h>
- #include <linux/sched.h>
- #include <linux/slab.h>
- #include <linux/poll.h>
- #include <linux/fcntl.h>
- #include <linux/init.h>
- #include <linux/skbuff.h>
- #include <linux/interrupt.h>
- #include <linux/notifier.h>
- #include <net/sock.h>
- #include <asm/system.h>
- #include <asm/uaccess.h>
- #include <asm/unaligned.h>
- #include <net/bluetooth/bluetooth.h>
- #include <net/bluetooth/bluez.h>
- #include <net/bluetooth/hci_core.h>
- #ifndef HCI_CORE_DEBUG
- #undef DBG
- #define DBG( A... )
- #endif
- static void hci_cmd_task(unsigned long arg);
- static void hci_rx_task(unsigned long arg);
- static void hci_tx_task(unsigned long arg);
- static void hci_notify(struct hci_dev *hdev, int event);
- static rwlock_t hci_task_lock = RW_LOCK_UNLOCKED;
- /* HCI device list */
- struct hci_dev *hdev_list[HCI_MAX_DEV];
- spinlock_t hdev_list_lock;
- #define GET_HDEV(a) (hdev_list[a])
- /* HCI protocol list */
- struct hci_proto *hproto_list[HCI_MAX_PROTO];
- #define GET_HPROTO(a) (hproto_list[a])
- /* HCI notifiers list */
- struct notifier_block *hci_dev_notifier;
- /* HCI device notifications */
- int hci_register_notifier(struct notifier_block *nb)
- {
- int err, i;
- struct hci_dev *hdev;
- if ((err = notifier_chain_register(&hci_dev_notifier, nb)))
- return err;
- /* Notify about already registered devices */
- spin_lock(&hdev_list_lock);
- for (i = 0; i < HCI_MAX_DEV; i++) {
- if (!(hdev = GET_HDEV(i)))
- continue;
- if (hdev->flags & HCI_UP)
- (*nb->notifier_call)(nb, HCI_DEV_UP, hdev);
- }
- spin_unlock(&hdev_list_lock);
- return 0;
- }
- int hci_unregister_notifier(struct notifier_block *nb)
- {
- return notifier_chain_unregister(&hci_dev_notifier, nb);
- }
- static inline void hci_notify(struct hci_dev *hdev, int event)
- {
- notifier_call_chain(&hci_dev_notifier, event, hdev);
- }
- /* Get HCI device by index (device is locked on return)*/
- struct hci_dev *hci_dev_get(int index)
- {
- struct hci_dev *hdev;
- DBG("%d", index);
- if (index < 0 || index >= HCI_MAX_DEV)
- return NULL;
- spin_lock(&hdev_list_lock);
- if ((hdev = GET_HDEV(index)))
- hci_dev_hold(hdev);
- spin_unlock(&hdev_list_lock);
- return hdev;
- }
- /* Flush inquiry cache */
- void inquiry_cache_flush(struct inquiry_cache *cache)
- {
- struct inquiry_entry *next = cache->list, *e;
- DBG("cache %p", cache);
- cache->list = NULL;
- while ((e = next)) {
- next = e->next;
- kfree(e);
- }
- }
- /* Lookup by bdaddr.
- * Cache must be locked. */
- static struct inquiry_entry * __inquiry_cache_lookup(struct inquiry_cache *cache, bdaddr_t *bdaddr)
- {
- struct inquiry_entry *e;
- DBG("cache %p, %s", cache, batostr(bdaddr));
- for (e = cache->list; e; e = e->next)
- if (!bacmp(&e->info.bdaddr, bdaddr))
- break;
- return e;
- }
- static void inquiry_cache_update(struct inquiry_cache *cache, inquiry_info *info)
- {
- struct inquiry_entry *e;
- DBG("cache %p, %s", cache, batostr(&info->bdaddr));
- inquiry_cache_lock(cache);
- if (!(e = __inquiry_cache_lookup(cache, &info->bdaddr))) {
- /* Entry not in the cache. Add new one. */
- if (!(e = kmalloc(sizeof(struct inquiry_entry), GFP_ATOMIC)))
- goto unlock;
- memset(e, 0, sizeof(struct inquiry_entry));
- e->next = cache->list;
- cache->list = e;
- }
- memcpy(&e->info, info, sizeof(inquiry_info));
- e->timestamp = jiffies;
- cache->timestamp = jiffies;
- unlock:
- inquiry_cache_unlock(cache);
- }
- static int inquiry_cache_dump(struct inquiry_cache *cache, int num, __u8 *buf)
- {
- inquiry_info *info = (inquiry_info *) buf;
- struct inquiry_entry *e;
- int copied = 0;
- inquiry_cache_lock(cache);
- for (e = cache->list; e && copied < num; e = e->next, copied++)
- memcpy(info++, &e->info, sizeof(inquiry_info));
- inquiry_cache_unlock(cache);
- DBG("cache %p, copied %d", cache, copied);
- return copied;
- }
- /* --------- BaseBand connections --------- */
- static struct hci_conn *hci_conn_add(struct hci_dev *hdev, __u16 handle, __u8 type, bdaddr_t *dst)
- {
- struct hci_conn *conn;
- DBG("%s handle %d dst %s", hdev->name, handle, batostr(dst));
- if ( conn_hash_lookup(&hdev->conn_hash, handle)) {
- ERR("%s handle 0x%x already exists", hdev->name, handle);
- return NULL;
- }
- if (!(conn = kmalloc(sizeof(struct hci_conn), GFP_ATOMIC)))
- return NULL;
- memset(conn, 0, sizeof(struct hci_conn));
- bacpy(&conn->dst, dst);
- conn->handle = handle;
- conn->type = type;
- conn->hdev = hdev;
- skb_queue_head_init(&conn->data_q);
- hci_dev_hold(hdev);
- conn_hash_add(&hdev->conn_hash, handle, conn);
- return conn;
- }
- static int hci_conn_del(struct hci_dev *hdev, struct hci_conn *conn)
- {
- DBG("%s conn %p handle %d", hdev->name, conn, conn->handle);
- conn_hash_del(&hdev->conn_hash, conn);
- hci_dev_put(hdev);
- /* Unacked frames */
- hdev->acl_cnt += conn->sent;
- skb_queue_purge(&conn->data_q);
- kfree(conn);
- return 0;
- }
- /* Drop all connection on the device */
- static void hci_conn_hash_flush(struct hci_dev *hdev)
- {
- struct conn_hash *h = &hdev->conn_hash;
- struct hci_proto *hp;
- struct list_head *p;
- DBG("hdev %s", hdev->name);
- p = h->list.next;
- while (p != &h->list) {
- struct hci_conn *c;
- c = list_entry(p, struct hci_conn, list);
- p = p->next;
- if (c->type == ACL_LINK) {
- /* ACL link notify L2CAP layer */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->disconn_ind)
- hp->disconn_ind(c, 0x16);
- } else {
- /* SCO link (no notification) */
- }
- hci_conn_del(hdev, c);
- }
- }
- int hci_connect(struct hci_dev *hdev, bdaddr_t *bdaddr)
- {
- struct inquiry_cache *cache = &hdev->inq_cache;
- struct inquiry_entry *e;
- create_conn_cp cc;
- __u16 clock_offset;
- DBG("%s bdaddr %s", hdev->name, batostr(bdaddr));
- if (!(hdev->flags & HCI_UP))
- return -ENODEV;
- inquiry_cache_lock_bh(cache);
- if (!(e = __inquiry_cache_lookup(cache, bdaddr)) || inquiry_entry_age(e) > INQUIRY_ENTRY_AGE_MAX) {
- cc.pscan_rep_mode = 0;
- cc.pscan_mode = 0;
- clock_offset = 0;
- } else {
- cc.pscan_rep_mode = e->info.pscan_rep_mode;
- cc.pscan_mode = e->info.pscan_mode;
- clock_offset = __le16_to_cpu(e->info.clock_offset) & 0x8000;
- }
- inquiry_cache_unlock_bh(cache);
- bacpy(&cc.bdaddr, bdaddr);
- cc.pkt_type = __cpu_to_le16(hdev->pkt_type);
- cc.clock_offset = __cpu_to_le16(clock_offset);
- if (lmp_rswitch_capable(hdev))
- cc.role_switch = 0x01;
- else
- cc.role_switch = 0x00;
-
- hci_send_cmd(hdev, OGF_LINK_CTL, OCF_CREATE_CONN, CREATE_CONN_CP_SIZE, &cc);
- return 0;
- }
- int hci_disconnect(struct hci_conn *conn, __u8 reason)
- {
- disconnect_cp dc;
- DBG("conn %p handle %d", conn, conn->handle);
- dc.handle = __cpu_to_le16(conn->handle);
- dc.reason = reason;
- hci_send_cmd(conn->hdev, OGF_LINK_CTL, OCF_DISCONNECT, DISCONNECT_CP_SIZE, &dc);
- return 0;
- }
- /* --------- HCI request handling ------------ */
- static inline void hci_req_lock(struct hci_dev *hdev)
- {
- down(&hdev->req_lock);
- }
- static inline void hci_req_unlock(struct hci_dev *hdev)
- {
- up(&hdev->req_lock);
- }
- static inline void hci_req_complete(struct hci_dev *hdev, int result)
- {
- DBG("%s result 0x%2.2x", hdev->name, result);
- if (hdev->req_status == HCI_REQ_PEND) {
- hdev->req_result = result;
- hdev->req_status = HCI_REQ_DONE;
- wake_up_interruptible(&hdev->req_wait_q);
- }
- }
- static inline void hci_req_cancel(struct hci_dev *hdev, int err)
- {
- DBG("%s err 0x%2.2x", hdev->name, err);
- if (hdev->req_status == HCI_REQ_PEND) {
- hdev->req_result = err;
- hdev->req_status = HCI_REQ_CANCELED;
- wake_up_interruptible(&hdev->req_wait_q);
- }
- }
- /* Execute request and wait for completion. */
- static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt),
- unsigned long opt, __u32 timeout)
- {
- DECLARE_WAITQUEUE(wait, current);
- int err = 0;
- DBG("%s start", hdev->name);
- hdev->req_status = HCI_REQ_PEND;
- add_wait_queue(&hdev->req_wait_q, &wait);
- current->state = TASK_INTERRUPTIBLE;
- req(hdev, opt);
- schedule_timeout(timeout);
- current->state = TASK_RUNNING;
- remove_wait_queue(&hdev->req_wait_q, &wait);
- if (signal_pending(current))
- return -EINTR;
- switch (hdev->req_status) {
- case HCI_REQ_DONE:
- err = -bterr(hdev->req_result);
- break;
- case HCI_REQ_CANCELED:
- err = -hdev->req_result;
- break;
- default:
- err = -ETIMEDOUT;
- break;
- };
- hdev->req_status = hdev->req_result = 0;
- DBG("%s end: err %d", hdev->name, err);
- return err;
- }
- static inline int hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev, unsigned long opt),
- unsigned long opt, __u32 timeout)
- {
- int ret;
- /* Serialize all requests */
- hci_req_lock(hdev);
- ret = __hci_request(hdev, req, opt, timeout);
- hci_req_unlock(hdev);
- return ret;
- }
- /* --------- HCI requests ---------- */
- static void hci_reset_req(struct hci_dev *hdev, unsigned long opt)
- {
- DBG("%s %ld", hdev->name, opt);
- /* Reset device */
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_RESET, 0, NULL);
- }
- static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
- {
- set_event_flt_cp ec;
- __u16 param;
- DBG("%s %ld", hdev->name, opt);
- /* Mandatory initialization */
- /* Read Local Supported Features */
- hci_send_cmd(hdev, OGF_INFO_PARAM, OCF_READ_LOCAL_FEATURES, 0, NULL);
- /* Read Buffer Size (ACL mtu, max pkt, etc.) */
- hci_send_cmd(hdev, OGF_INFO_PARAM, OCF_READ_BUFFER_SIZE, 0, NULL);
- /* Read BD Address */
- hci_send_cmd(hdev, OGF_INFO_PARAM, OCF_READ_BD_ADDR, 0, NULL);
- /* Optional initialization */
- /* Clear Event Filters */
- ec.flt_type = FLT_CLEAR_ALL;
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_SET_EVENT_FLT, 1, &ec);
- /* Page timeout ~20 secs */
- param = __cpu_to_le16(0x8000);
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_WRITE_PG_TIMEOUT, 2, ¶m);
- /* Connection accept timeout ~20 secs */
- param = __cpu_to_le16(0x7d00);
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_WRITE_CA_TIMEOUT, 2, ¶m);
- }
- static void hci_scan_req(struct hci_dev *hdev, unsigned long opt)
- {
- __u8 scan = opt;
- DBG("%s %x", hdev->name, scan);
- /* Inquiry and Page scans */
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_WRITE_SCAN_ENABLE, 1, &scan);
- }
- static void hci_auth_req(struct hci_dev *hdev, unsigned long opt)
- {
- __u8 auth = opt;
- DBG("%s %x", hdev->name, auth);
- /* Authentication */
- hci_send_cmd(hdev, OGF_HOST_CTL, OCF_WRITE_AUTH_ENABLE, 1, &auth);
- }
- static void hci_inq_req(struct hci_dev *hdev, unsigned long opt)
- {
- struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt;
- inquiry_cp ic;
- DBG("%s", hdev->name);
- /* Start Inquiry */
- memcpy(&ic.lap, &ir->lap, 3);
- ic.lenght = ir->length;
- ic.num_rsp = ir->num_rsp;
- hci_send_cmd(hdev, OGF_LINK_CTL, OCF_INQUIRY, INQUIRY_CP_SIZE, &ic);
- }
- /* HCI ioctl helpers */
- int hci_dev_open(__u16 dev)
- {
- struct hci_dev *hdev;
- int ret = 0;
- if (!(hdev = hci_dev_get(dev)))
- return -ENODEV;
- DBG("%s %p", hdev->name, hdev);
- hci_req_lock(hdev);
- if (hdev->flags & HCI_UP) {
- ret = -EALREADY;
- goto done;
- }
- if (hdev->open(hdev)) {
- ret = -EIO;
- goto done;
- }
- if (hdev->flags & HCI_NORMAL) {
- atomic_set(&hdev->cmd_cnt, 1);
- hdev->flags |= HCI_INIT;
- //__hci_request(hdev, hci_reset_req, 0, HZ);
- ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT);
-
- hdev->flags &= ~HCI_INIT;
- }
- if (!ret) {
- hdev->flags |= HCI_UP;
- hci_notify(hdev, HCI_DEV_UP);
- } else {
- /* Init failed, cleanup */
- tasklet_kill(&hdev->rx_task);
- tasklet_kill(&hdev->tx_task);
- tasklet_kill(&hdev->cmd_task);
- skb_queue_purge(&hdev->cmd_q);
- skb_queue_purge(&hdev->rx_q);
- if (hdev->flush)
- hdev->flush(hdev);
- if (hdev->sent_cmd) {
- kfree_skb(hdev->sent_cmd);
- hdev->sent_cmd = NULL;
- }
- hdev->close(hdev);
- }
- done:
- hci_req_unlock(hdev);
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_close(__u16 dev)
- {
- struct hci_dev *hdev;
- if (!(hdev = hci_dev_get(dev)))
- return -ENODEV;
- DBG("%s %p", hdev->name, hdev);
- hci_req_cancel(hdev, ENODEV);
- hci_req_lock(hdev);
- if (!(hdev->flags & HCI_UP))
- goto done;
- /* Kill RX and TX tasks */
- tasklet_kill(&hdev->rx_task);
- tasklet_kill(&hdev->tx_task);
- inquiry_cache_flush(&hdev->inq_cache);
- hci_conn_hash_flush(hdev);
- /* Clear flags */
- hdev->flags &= HCI_SOCK;
- hdev->flags |= HCI_NORMAL;
- hci_notify(hdev, HCI_DEV_DOWN);
- if (hdev->flush)
- hdev->flush(hdev);
- /* Reset device */
- skb_queue_purge(&hdev->cmd_q);
- atomic_set(&hdev->cmd_cnt, 1);
- hdev->flags |= HCI_INIT;
- __hci_request(hdev, hci_reset_req, 0, HZ);
- hdev->flags &= ~HCI_INIT;
- /* Kill cmd task */
- tasklet_kill(&hdev->cmd_task);
- /* Drop queues */
- skb_queue_purge(&hdev->rx_q);
- skb_queue_purge(&hdev->cmd_q);
- skb_queue_purge(&hdev->raw_q);
- /* Drop last sent command */
- if (hdev->sent_cmd) {
- kfree_skb(hdev->sent_cmd);
- hdev->sent_cmd = NULL;
- }
- /* After this point our queues are empty
- * and no tasks are scheduled.
- */
- hdev->close(hdev);
- done:
- hci_req_unlock(hdev);
- hci_dev_put(hdev);
- return 0;
- }
- int hci_dev_reset(__u16 dev)
- {
- struct hci_dev *hdev;
- int ret = 0;
- if (!(hdev = hci_dev_get(dev)))
- return -ENODEV;
- hci_req_lock(hdev);
- tasklet_disable(&hdev->tx_task);
- if (!(hdev->flags & HCI_UP))
- goto done;
- /* Drop queues */
- skb_queue_purge(&hdev->rx_q);
- skb_queue_purge(&hdev->cmd_q);
- inquiry_cache_flush(&hdev->inq_cache);
- hci_conn_hash_flush(hdev);
- if (hdev->flush)
- hdev->flush(hdev);
- atomic_set(&hdev->cmd_cnt, 1);
- hdev->acl_cnt = 0; hdev->sco_cnt = 0;
- ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT);
- done:
- tasklet_enable(&hdev->tx_task);
- hci_req_unlock(hdev);
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_reset_stat(__u16 dev)
- {
- struct hci_dev *hdev;
- int ret = 0;
- if (!(hdev = hci_dev_get(dev)))
- return -ENODEV;
- memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_setauth(unsigned long arg)
- {
- struct hci_dev *hdev;
- struct hci_dev_req dr;
- int ret = 0;
- if (copy_from_user(&dr, (void *) arg, sizeof(dr)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(dr.dev_id)))
- return -ENODEV;
- ret = hci_request(hdev, hci_auth_req, dr.dev_opt, HCI_INIT_TIMEOUT);
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_setscan(unsigned long arg)
- {
- struct hci_dev *hdev;
- struct hci_dev_req dr;
- int ret = 0;
- if (copy_from_user(&dr, (void *) arg, sizeof(dr)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(dr.dev_id)))
- return -ENODEV;
- ret = hci_request(hdev, hci_scan_req, dr.dev_opt, HCI_INIT_TIMEOUT);
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_setptype(unsigned long arg)
- {
- struct hci_dev *hdev;
- struct hci_dev_req dr;
- int ret = 0;
- if (copy_from_user(&dr, (void *) arg, sizeof(dr)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(dr.dev_id)))
- return -ENODEV;
- hdev->pkt_type = (__u16) dr.dev_opt;
- hci_dev_put(hdev);
- return ret;
- }
- int hci_dev_list(unsigned long arg)
- {
- struct hci_dev_list_req *dl;
- struct hci_dev_req *dr;
- struct hci_dev *hdev;
- int i, n, size;
- __u16 dev_num;
- if (get_user(dev_num, (__u16 *) arg))
- return -EFAULT;
- /* Avoid long loop, overflow */
- if (dev_num > 2048)
- return -EINVAL;
-
- size = dev_num * sizeof(struct hci_dev_req) + sizeof(__u16);
- if (verify_area(VERIFY_WRITE, (void *) arg, size))
- return -EFAULT;
- if (!(dl = kmalloc(size, GFP_KERNEL)))
- return -ENOMEM;
- dr = dl->dev_req;
- spin_lock_bh(&hdev_list_lock);
- for (i = 0, n = 0; i < HCI_MAX_DEV && n < dev_num; i++) {
- if ((hdev = hdev_list[i])) {
- (dr + n)->dev_id = hdev->id;
- (dr + n)->dev_opt = hdev->flags;
- n++;
- }
- }
- spin_unlock_bh(&hdev_list_lock);
- dl->dev_num = n;
- size = n * sizeof(struct hci_dev_req) + sizeof(__u16);
- copy_to_user((void *) arg, dl, size);
- return 0;
- }
- int hci_dev_info(unsigned long arg)
- {
- struct hci_dev *hdev;
- struct hci_dev_info di;
- int err = 0;
- if (copy_from_user(&di, (void *) arg, sizeof(di)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(di.dev_id)))
- return -ENODEV;
- strcpy(di.name, hdev->name);
- di.bdaddr = hdev->bdaddr;
- di.type = hdev->type;
- di.flags = hdev->flags;
- di.pkt_type = hdev->pkt_type;
- di.acl_mtu = hdev->acl_mtu;
- di.acl_max = hdev->acl_max;
- di.sco_mtu = hdev->sco_mtu;
- di.sco_max = hdev->sco_max;
- memcpy(&di.stat, &hdev->stat, sizeof(di.stat));
- memcpy(&di.features, &hdev->features, sizeof(di.features));
- if (copy_to_user((void *) arg, &di, sizeof(di)))
- err = -EFAULT;
- hci_dev_put(hdev);
- return err;
- }
- __u32 hci_dev_setmode(struct hci_dev *hdev, __u32 mode)
- {
- __u32 omode = hdev->flags & HCI_MODE_MASK;
- hdev->flags &= ~HCI_MODE_MASK;
- hdev->flags |= (mode & HCI_MODE_MASK);
- return omode;
- }
- __u32 hci_dev_getmode(struct hci_dev *hdev)
- {
- return hdev->flags & HCI_MODE_MASK;
- }
- int hci_conn_list(unsigned long arg)
- {
- struct hci_conn_list_req req, *cl;
- struct hci_conn_info *ci;
- struct hci_dev *hdev;
- struct list_head *p;
- int n = 0, size;
- if (copy_from_user(&req, (void *) arg, sizeof(req)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(req.dev_id)))
- return -ENODEV;
- /* Set a limit to avoid overlong loops, and also numeric overflow - AC */
- if(req.conn_num < 2048)
- return -EINVAL;
-
- size = req.conn_num * sizeof(struct hci_conn_info) + sizeof(req);
- if (!(cl = kmalloc(size, GFP_KERNEL)))
- return -ENOMEM;
- ci = cl->conn_info;
- local_bh_disable();
- conn_hash_lock(&hdev->conn_hash);
- list_for_each(p, &hdev->conn_hash.list) {
- register struct hci_conn *c;
- c = list_entry(p, struct hci_conn, list);
- (ci + n)->handle = c->handle;
- bacpy(&(ci + n)->bdaddr, &c->dst);
- n++;
- }
- conn_hash_unlock(&hdev->conn_hash);
- local_bh_enable();
- cl->dev_id = hdev->id;
- cl->conn_num = n;
- size = n * sizeof(struct hci_conn_info) + sizeof(req);
- hci_dev_put(hdev);
- if(copy_to_user((void *) arg, cl, size))
- return -EFAULT;
- return 0;
- }
- int hci_inquiry(unsigned long arg)
- {
- struct inquiry_cache *cache;
- struct hci_inquiry_req ir;
- struct hci_dev *hdev;
- int err = 0, do_inquiry = 0;
- long timeo;
- __u8 *buf, *ptr;
- ptr = (void *) arg;
- if (copy_from_user(&ir, ptr, sizeof(ir)))
- return -EFAULT;
- if (!(hdev = hci_dev_get(ir.dev_id)))
- return -ENODEV;
- cache = &hdev->inq_cache;
- inquiry_cache_lock(cache);
- if (inquiry_cache_age(cache) > INQUIRY_CACHE_AGE_MAX || ir.flags & IREQ_CACHE_FLUSH) {
- inquiry_cache_flush(cache);
- do_inquiry = 1;
- }
- inquiry_cache_unlock(cache);
- /* Limit inquiry time, also avoid overflows */
- if(ir.length > 2048 || ir.num_rsp > 2048)
- {
- err = -EINVAL;
- goto done;
- }
- timeo = ir.length * 2 * HZ;
- if (do_inquiry && (err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo)) < 0)
- goto done;
- /* cache_dump can't sleep. Therefore we allocate temp buffer and then
- * copy it to the user space.
- */
- if (!(buf = kmalloc(sizeof(inquiry_info) * ir.num_rsp, GFP_KERNEL))) {
- err = -ENOMEM;
- goto done;
- }
- ir.num_rsp = inquiry_cache_dump(cache, ir.num_rsp, buf);
- DBG("num_rsp %d", ir.num_rsp);
- if (!verify_area(VERIFY_WRITE, ptr, sizeof(ir) + (sizeof(inquiry_info) * ir.num_rsp))) {
- copy_to_user(ptr, &ir, sizeof(ir));
- ptr += sizeof(ir);
- copy_to_user(ptr, buf, sizeof(inquiry_info) * ir.num_rsp);
- } else
- err = -EFAULT;
- kfree(buf);
- done:
- hci_dev_put(hdev);
- return err;
- }
- /* Interface to HCI drivers */
- /* Register HCI device */
- int hci_register_dev(struct hci_dev *hdev)
- {
- int i;
- DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
- /* Find free slot */
- spin_lock_bh(&hdev_list_lock);
- for (i = 0; i < HCI_MAX_DEV; i++) {
- if (!hdev_list[i]) {
- hdev_list[i] = hdev;
- sprintf(hdev->name, "hci%d", i);
- atomic_set(&hdev->refcnt, 0);
- hdev->id = i;
- hdev->flags = HCI_NORMAL;
- hdev->pkt_type = (HCI_DM1 | HCI_DH1);
- tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev);
- tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev);
- tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev);
- skb_queue_head_init(&hdev->rx_q);
- skb_queue_head_init(&hdev->cmd_q);
- skb_queue_head_init(&hdev->raw_q);
- init_waitqueue_head(&hdev->req_wait_q);
- init_MUTEX(&hdev->req_lock);
- inquiry_cache_init(&hdev->inq_cache);
- conn_hash_init(&hdev->conn_hash);
- memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
- hci_notify(hdev, HCI_DEV_REG);
- MOD_INC_USE_COUNT;
- break;
- }
- }
- spin_unlock_bh(&hdev_list_lock);
- return (i == HCI_MAX_DEV) ? -1 : i;
- }
- /* Unregister HCI device */
- int hci_unregister_dev(struct hci_dev *hdev)
- {
- int i;
- DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
- if (hdev->flags & HCI_UP)
- hci_dev_close(hdev->id);
- /* Find device slot */
- spin_lock(&hdev_list_lock);
- for (i = 0; i < HCI_MAX_DEV; i++) {
- if (hdev_list[i] == hdev) {
- hdev_list[i] = NULL;
- MOD_DEC_USE_COUNT;
- break;
- }
- }
- spin_unlock(&hdev_list_lock);
- hci_notify(hdev, HCI_DEV_UNREG);
- /* Sleep while device is in use */
- while (atomic_read(&hdev->refcnt)) {
- int sleep_cnt = 100;
- DBG("%s sleeping on lock %d", hdev->name, atomic_read(&hdev->refcnt));
- sleep_on_timeout(&hdev->req_wait_q, HZ*10);
- if (!(--sleep_cnt))
- break;
- }
- return 0;
- }
- /* Interface to upper protocols */
- /* Register/Unregister protocols.
- * hci_task_lock is used to ensure that no tasks are running.
- */
- int hci_register_proto(struct hci_proto *hproto)
- {
- int err = 0;
- DBG("%p name %s", hproto, hproto->name);
- if (hproto->id >= HCI_MAX_PROTO)
- return -EINVAL;
- write_lock_bh(&hci_task_lock);
- if (!hproto_list[hproto->id])
- hproto_list[hproto->id] = hproto;
- else
- err = -1;
- write_unlock_bh(&hci_task_lock);
- return err;
- }
- int hci_unregister_proto(struct hci_proto *hproto)
- {
- int err = 0;
- DBG("%p name %s", hproto, hproto->name);
- if (hproto->id > HCI_MAX_PROTO)
- return -EINVAL;
- write_lock_bh(&hci_task_lock);
- if (hproto_list[hproto->id])
- hproto_list[hproto->id] = NULL;
- else
- err = -ENOENT;
- write_unlock_bh(&hci_task_lock);
- return err;
- }
- static int hci_send_frame(struct sk_buff *skb)
- {
- struct hci_dev *hdev = (struct hci_dev *) skb->dev;
- if (!hdev) {
- kfree_skb(skb);
- return -ENODEV;
- }
- DBG("%s type %d len %d", hdev->name, skb->pkt_type, skb->len);
- if (hdev->flags & HCI_SOCK)
- hci_send_to_sock(hdev, skb);
- /* Get rid of skb owner, prior to sending to the driver. */
- skb_orphan(skb);
- return hdev->send(skb);
- }
- /* Connection scheduler */
- static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int *quote)
- {
- struct conn_hash *h = &hdev->conn_hash;
- struct hci_conn *conn = NULL;
- int num = 0, min = 0xffff;
- struct list_head *p;
- conn_hash_lock(h);
- list_for_each(p, &h->list) {
- register struct hci_conn *c;
- c = list_entry(p, struct hci_conn, list);
- if (c->type != type || skb_queue_empty(&c->data_q))
- continue;
- num++;
- if (c->sent < min) {
- min = c->sent;
- conn = c;
- }
- }
- conn_hash_unlock(h);
- if (conn) {
- int q = hdev->acl_cnt / num;
- *quote = q ? q : 1;
- } else
- *quote = 0;
- DBG("conn %p quote %d", conn, *quote);
- return conn;
- }
- static inline void hci_sched_acl(struct hci_dev *hdev)
- {
- struct hci_conn *conn;
- struct sk_buff *skb;
- int quote;
- DBG("%s", hdev->name);
- while (hdev->acl_cnt && (conn = hci_low_sent(hdev, ACL_LINK, "e))) {
- while (quote && (skb = skb_dequeue(&conn->data_q))) {
- DBG("skb %p len %d", skb, skb->len);
- hci_send_frame(skb);
- conn->sent++;
- hdev->acl_cnt--;
- quote--;
- }
- }
- }
- /* Schedule SCO */
- static inline void hci_sched_sco(struct hci_dev *hdev)
- {
- /* FIXME: For now we queue SCO packets to the raw queue
- while (hdev->sco_cnt && (skb = skb_dequeue(&conn->data_q))) {
- hci_send_frame(skb);
- conn->sco_sent++;
- hdev->sco_cnt--;
- }
- */
- }
- /* Get data from the previously sent command */
- static void * hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf)
- {
- hci_command_hdr *hc;
- if (!hdev->sent_cmd)
- return NULL;
- hc = (void *) hdev->sent_cmd->data;
- if (hc->opcode != __cpu_to_le16(cmd_opcode_pack(ogf, ocf)))
- return NULL;
- DBG("%s ogf 0x%x ocf 0x%x", hdev->name, ogf, ocf);
- return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE;
- }
- /* Send raw HCI frame */
- int hci_send_raw(struct sk_buff *skb)
- {
- struct hci_dev *hdev = (struct hci_dev *) skb->dev;
- if (!hdev) {
- kfree_skb(skb);
- return -ENODEV;
- }
- DBG("%s type %d len %d", hdev->name, skb->pkt_type, skb->len);
- if (hdev->flags & HCI_NORMAL) {
- /* Queue frame according it's type */
- switch (skb->pkt_type) {
- case HCI_COMMAND_PKT:
- skb_queue_tail(&hdev->cmd_q, skb);
- hci_sched_cmd(hdev);
- return 0;
- case HCI_ACLDATA_PKT:
- case HCI_SCODATA_PKT:
- /* FIXME:
- * Check header here and queue to apropriate connection.
- */
- break;
- }
- }
- skb_queue_tail(&hdev->raw_q, skb);
- hci_sched_tx(hdev);
- return 0;
- }
- /* Send HCI command */
- int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param)
- {
- int len = HCI_COMMAND_HDR_SIZE + plen;
- hci_command_hdr *hc;
- struct sk_buff *skb;
- DBG("%s ogf 0x%x ocf 0x%x plen %d", hdev->name, ogf, ocf, plen);
- if (!(skb = bluez_skb_alloc(len, GFP_ATOMIC))) {
- ERR("%s Can't allocate memory for HCI command", hdev->name);
- return -ENOMEM;
- }
-
- hc = (hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE);
- hc->opcode = __cpu_to_le16(cmd_opcode_pack(ogf, ocf));
- hc->plen = plen;
- if (plen)
- memcpy(skb_put(skb, plen), param, plen);
- DBG("skb len %d", skb->len);
- skb->pkt_type = HCI_COMMAND_PKT;
- skb->dev = (void *) hdev;
- skb_queue_tail(&hdev->cmd_q, skb);
- hci_sched_cmd(hdev);
- return 0;
- }
- /* Send ACL data */
- static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
- {
- int len = skb->len;
- hci_acl_hdr *ah;
- ah = (hci_acl_hdr *) skb_push(skb, HCI_ACL_HDR_SIZE);
- ah->handle = __cpu_to_le16(acl_handle_pack(handle, flags));
- ah->dlen = __cpu_to_le16(len);
- skb->h.raw = (void *) ah;
- }
- int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
- {
- struct hci_dev *hdev = conn->hdev;
- struct sk_buff *list;
- DBG("%s conn %p flags 0x%x", hdev->name, conn, flags);
- skb->dev = (void *) hdev;
- skb->pkt_type = HCI_ACLDATA_PKT;
- hci_add_acl_hdr(skb, conn->handle, flags | ACL_START);
- if (!(list = skb_shinfo(skb)->frag_list)) {
- /* Non fragmented */
- DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
-
- skb_queue_tail(&conn->data_q, skb);
- } else {
- /* Fragmented */
- DBG("%s frag %p len %d", hdev->name, skb, skb->len);
- skb_shinfo(skb)->frag_list = NULL;
- /* Queue all fragments atomically */
- spin_lock_bh(&conn->data_q.lock);
- __skb_queue_tail(&conn->data_q, skb);
- do {
- skb = list; list = list->next;
-
- skb->dev = (void *) hdev;
- skb->pkt_type = HCI_ACLDATA_PKT;
- hci_add_acl_hdr(skb, conn->handle, flags | ACL_CONT);
-
- DBG("%s frag %p len %d", hdev->name, skb, skb->len);
- __skb_queue_tail(&conn->data_q, skb);
- } while (list);
- spin_unlock_bh(&conn->data_q.lock);
- }
-
- hci_sched_tx(hdev);
- return 0;
- }
- /* Send SCO data */
- int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
- {
- struct hci_dev *hdev = conn->hdev;
- hci_sco_hdr hs;
- DBG("%s len %d", hdev->name, skb->len);
- if (skb->len > hdev->sco_mtu) {
- kfree_skb(skb);
- return -EINVAL;
- }
- hs.handle = __cpu_to_le16(conn->handle);
- hs.dlen = skb->len;
- skb->h.raw = skb_push(skb, HCI_SCO_HDR_SIZE);
- memcpy(skb->h.raw, &hs, HCI_SCO_HDR_SIZE);
- skb->dev = (void *) hdev;
- skb->pkt_type = HCI_SCODATA_PKT;
- skb_queue_tail(&conn->data_q, skb);
- hci_sched_tx(hdev);
- return 0;
- }
- /* Handle HCI Event packets */
- /* Command Complete OGF LINK_CTL */
- static void hci_cc_link_ctl(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb)
- {
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- default:
- DBG("%s Command complete: ogf LINK_CTL ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Complete OGF LINK_POLICY */
- static void hci_cc_link_policy(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb)
- {
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- default:
- DBG("%s: Command complete: ogf LINK_POLICY ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Complete OGF HOST_CTL */
- static void hci_cc_host_ctl(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb)
- {
- __u8 status, param;
- void *sent;
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- case OCF_RESET:
- status = *((__u8 *) skb->data);
- hci_req_complete(hdev, status);
- break;
- case OCF_SET_EVENT_FLT:
- status = *((__u8 *) skb->data);
- if (status) {
- DBG("%s SET_EVENT_FLT failed %d", hdev->name, status);
- } else {
- DBG("%s SET_EVENT_FLT succeseful", hdev->name);
- }
- break;
- case OCF_WRITE_AUTH_ENABLE:
- if (!(sent = hci_sent_cmd_data(hdev, OGF_HOST_CTL, OCF_WRITE_AUTH_ENABLE)))
- break;
- status = *((__u8 *) skb->data);
- param = *((__u8 *) sent);
- if (!status) {
- if (param == AUTH_ENABLED)
- hdev->flags |= HCI_AUTH;
- else
- hdev->flags &= ~HCI_AUTH;
- }
- hci_req_complete(hdev, status);
- break;
- case OCF_WRITE_CA_TIMEOUT:
- status = *((__u8 *) skb->data);
- if (status) {
- DBG("%s OCF_WRITE_CA_TIMEOUT failed %d", hdev->name, status);
- } else {
- DBG("%s OCF_WRITE_CA_TIMEOUT succeseful", hdev->name);
- }
- break;
- case OCF_WRITE_PG_TIMEOUT:
- status = *((__u8 *) skb->data);
- if (status) {
- DBG("%s OCF_WRITE_PG_TIMEOUT failed %d", hdev->name, status);
- } else {
- DBG("%s: OCF_WRITE_PG_TIMEOUT succeseful", hdev->name);
- }
- break;
- case OCF_WRITE_SCAN_ENABLE:
- if (!(sent = hci_sent_cmd_data(hdev, OGF_HOST_CTL, OCF_WRITE_SCAN_ENABLE)))
- break;
- status = *((__u8 *) skb->data);
- param = *((__u8 *) sent);
- DBG("param 0x%x", param);
- if (!status) {
- switch (param) {
- case IS_ENA_PS_ENA:
- hdev->flags |= HCI_PSCAN | HCI_ISCAN;
- break;
- case IS_ENA_PS_DIS:
- hdev->flags &= ~HCI_PSCAN;
- hdev->flags |= HCI_ISCAN;
- break;
- case IS_DIS_PS_ENA:
- hdev->flags &= ~HCI_ISCAN;
- hdev->flags |= HCI_PSCAN;
- break;
- default:
- hdev->flags &= ~(HCI_ISCAN | HCI_PSCAN);
- break;
- };
- }
- hci_req_complete(hdev, status);
- break;
- default:
- DBG("%s Command complete: ogf HOST_CTL ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Complete OGF INFO_PARAM */
- static void hci_cc_info_param(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb)
- {
- read_local_features_rp *lf;
- read_buffer_size_rp *bs;
- read_bd_addr_rp *ba;
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- case OCF_READ_LOCAL_FEATURES:
- lf = (read_local_features_rp *) skb->data;
- if (lf->status) {
- DBG("%s READ_LOCAL_FEATURES failed %d", hdev->name, lf->status);
- break;
- }
- memcpy(hdev->features, lf->features, sizeof(hdev->features));
- /* Adjust default settings according to features
- * supported by device. */
- if (hdev->features[0] & LMP_3SLOT)
- hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
- if (hdev->features[0] & LMP_5SLOT)
- hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
- DBG("%s: features 0x%x 0x%x 0x%x", hdev->name, lf->features[0], lf->features[1], lf->features[2]);
- break;
- case OCF_READ_BUFFER_SIZE:
- bs = (read_buffer_size_rp *) skb->data;
- if (bs->status) {
- DBG("%s READ_BUFFER_SIZE failed %d", hdev->name, bs->status);
- break;
- }
- hdev->acl_mtu = __le16_to_cpu(bs->acl_mtu);
- hdev->sco_mtu = bs->sco_mtu;
- hdev->acl_max = hdev->acl_cnt = __le16_to_cpu(bs->acl_max_pkt);
- hdev->sco_max = hdev->sco_cnt = __le16_to_cpu(bs->sco_max_pkt);
- DBG("%s mtu: acl %d, sco %d max_pkt: acl %d, sco %d", hdev->name,
- hdev->acl_mtu, hdev->sco_mtu, hdev->acl_max, hdev->sco_max);
- break;
- case OCF_READ_BD_ADDR:
- ba = (read_bd_addr_rp *) skb->data;
- if (!ba->status) {
- bacpy(&hdev->bdaddr, &ba->bdaddr);
- } else {
- DBG("%s: READ_BD_ADDR failed %d", hdev->name, ba->status);
- }
- hci_req_complete(hdev, ba->status);
- break;
- default:
- DBG("%s Command complete: ogf INFO_PARAM ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Status OGF LINK_CTL */
- static void hci_cs_link_ctl(struct hci_dev *hdev, __u16 ocf, __u8 status)
- {
- struct hci_proto * hp;
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- case OCF_CREATE_CONN:
- if (status) {
- create_conn_cp *cc = hci_sent_cmd_data(hdev, OGF_LINK_CTL, OCF_CREATE_CONN);
- if (!cc)
- break;
- DBG("%s Create connection error: status 0x%x %s", hdev->name,
- status, batostr(&cc->bdaddr));
- /* Notify upper protocols */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->connect_cfm) {
- tasklet_disable(&hdev->tx_task);
- hp->connect_cfm(hdev, &cc->bdaddr, status, NULL);
- tasklet_enable(&hdev->tx_task);
- }
- }
- break;
- case OCF_INQUIRY:
- if (status) {
- DBG("%s Inquiry error: status 0x%x", hdev->name, status);
- hci_req_complete(hdev, status);
- }
- break;
- default:
- DBG("%s Command status: ogf LINK_CTL ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Status OGF LINK_POLICY */
- static void hci_cs_link_policy(struct hci_dev *hdev, __u16 ocf, __u8 status)
- {
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- default:
- DBG("%s Command status: ogf HOST_POLICY ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Status OGF HOST_CTL */
- static void hci_cs_host_ctl(struct hci_dev *hdev, __u16 ocf, __u8 status)
- {
- DBG("%s ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- default:
- DBG("%s Command status: ogf HOST_CTL ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Command Status OGF INFO_PARAM */
- static void hci_cs_info_param(struct hci_dev *hdev, __u16 ocf, __u8 status)
- {
- DBG("%s: hci_cs_info_param: ocf 0x%x", hdev->name, ocf);
- switch (ocf) {
- default:
- DBG("%s Command status: ogf INFO_PARAM ocf %x", hdev->name, ocf);
- break;
- };
- }
- /* Inquiry Complete */
- static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- __u8 status = *((__u8 *) skb->data);
- DBG("%s status %d", hdev->name, status);
- hci_req_complete(hdev, status);
- }
- /* Inquiry Result */
- static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- inquiry_info *info = (inquiry_info *) (skb->data + 1);
- int num_rsp = *((__u8 *) skb->data);
- DBG("%s num_rsp %d", hdev->name, num_rsp);
- for (; num_rsp; num_rsp--)
- inquiry_cache_update(&hdev->inq_cache, info++);
- }
- /* Connect Request */
- static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- evt_conn_request *cr = (evt_conn_request *) skb->data;
- struct hci_proto *hp;
- accept_conn_req_cp ac;
- int accept = 0;
- DBG("%s Connection request: %s type 0x%x", hdev->name, batostr(&cr->bdaddr), cr->link_type);
- /* Notify upper protocols */
- if (cr->link_type == ACL_LINK) {
- /* ACL link notify L2CAP */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->connect_ind) {
- tasklet_disable(&hdev->tx_task);
- accept = hp->connect_ind(hdev, &cr->bdaddr);
- tasklet_enable(&hdev->tx_task);
- }
- } else {
- /* SCO link (no notification) */
- /* FIXME: Should be accept it here or let the requester (app) accept it ? */
- accept = 1;
- }
- if (accept) {
- /* Connection accepted by upper layer */
- bacpy(&ac.bdaddr, &cr->bdaddr);
- ac.role = 0x01; /* Remain slave */
- hci_send_cmd(hdev, OGF_LINK_CTL, OCF_ACCEPT_CONN_REQ, ACCEPT_CONN_REQ_CP_SIZE, &ac);
- } else {
- /* Connection rejected by upper layer */
- /* FIXME:
- * Should we use HCI reject here ?
- */
- return;
- }
- }
- /* Connect Complete */
- static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- evt_conn_complete *cc = (evt_conn_complete *) skb->data;
- struct hci_conn *conn = NULL;
- struct hci_proto *hp;
- DBG("%s", hdev->name);
- tasklet_disable(&hdev->tx_task);
- if (!cc->status)
- conn = hci_conn_add(hdev, __le16_to_cpu(cc->handle), cc->link_type, &cc->bdaddr);
- /* Notify upper protocols */
- if (cc->link_type == ACL_LINK) {
- /* ACL link notify L2CAP layer */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->connect_cfm)
- hp->connect_cfm(hdev, &cc->bdaddr, cc->status, conn);
- } else {
- /* SCO link (no notification) */
- }
- tasklet_enable(&hdev->tx_task);
- }
- /* Disconnect Complete */
- static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- evt_disconn_complete *dc = (evt_disconn_complete *) skb->data;
- struct hci_conn *conn = NULL;
- struct hci_proto *hp;
- __u16 handle = __le16_to_cpu(dc->handle);
- DBG("%s", hdev->name);
- if (!dc->status && (conn = conn_hash_lookup(&hdev->conn_hash, handle))) {
- tasklet_disable(&hdev->tx_task);
- /* Notify upper protocols */
- if (conn->type == ACL_LINK) {
- /* ACL link notify L2CAP layer */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->disconn_ind)
- hp->disconn_ind(conn, dc->reason);
- } else {
- /* SCO link (no notification) */
- }
- hci_conn_del(hdev, conn);
- tasklet_enable(&hdev->tx_task);
- }
- }
- /* Number of completed packets */
- static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
- {
- evt_num_comp_pkts *nc = (evt_num_comp_pkts *) skb->data;
- __u16 *ptr;
- int i;
- skb_pull(skb, EVT_NUM_COMP_PKTS_SIZE);
- DBG("%s num_hndl %d", hdev->name, nc->num_hndl);
- if (skb->len < nc->num_hndl * 4) {
- DBG("%s bad parameters", hdev->name);
- return;
- }
- tasklet_disable(&hdev->tx_task);
- for (i = 0, ptr = (__u16 *) skb->data; i < nc->num_hndl; i++) {
- struct hci_conn *conn;
- __u16 handle, count;
- handle = __le16_to_cpu(get_unaligned(ptr++));
- count = __le16_to_cpu(get_unaligned(ptr++));
- hdev->acl_cnt += count;
- if ((conn = conn_hash_lookup(&hdev->conn_hash, handle)))
- conn->sent -= count;
- }
- tasklet_enable(&hdev->tx_task);
-
- hci_sched_tx(hdev);
- }
- static inline void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
- {
- hci_event_hdr *he = (hci_event_hdr *) skb->data;
- evt_cmd_status *cs;
- evt_cmd_complete *ec;
- __u16 opcode, ocf, ogf;
- skb_pull(skb, HCI_EVENT_HDR_SIZE);
- DBG("%s evt 0x%x", hdev->name, he->evt);
- switch (he->evt) {
- case EVT_NUM_COMP_PKTS:
- hci_num_comp_pkts_evt(hdev, skb);
- break;
- case EVT_INQUIRY_COMPLETE:
- hci_inquiry_complete_evt(hdev, skb);
- break;
- case EVT_INQUIRY_RESULT:
- hci_inquiry_result_evt(hdev, skb);
- break;
- case EVT_CONN_REQUEST:
- hci_conn_request_evt(hdev, skb);
- break;
- case EVT_CONN_COMPLETE:
- hci_conn_complete_evt(hdev, skb);
- break;
- case EVT_DISCONN_COMPLETE:
- hci_disconn_complete_evt(hdev, skb);
- break;
- case EVT_CMD_STATUS:
- cs = (evt_cmd_status *) skb->data;
- skb_pull(skb, EVT_CMD_STATUS_SIZE);
-
- opcode = __le16_to_cpu(cs->opcode);
- ogf = cmd_opcode_ogf(opcode);
- ocf = cmd_opcode_ocf(opcode);
- switch (ogf) {
- case OGF_INFO_PARAM:
- hci_cs_info_param(hdev, ocf, cs->status);
- break;
- case OGF_HOST_CTL:
- hci_cs_host_ctl(hdev, ocf, cs->status);
- break;
- case OGF_LINK_CTL:
- hci_cs_link_ctl(hdev, ocf, cs->status);
- break;
- case OGF_LINK_POLICY:
- hci_cs_link_policy(hdev, ocf, cs->status);
- break;
- default:
- DBG("%s Command Status OGF %x", hdev->name, ogf);
- break;
- };
- if (cs->ncmd) {
- atomic_set(&hdev->cmd_cnt, 1);
- if (!skb_queue_empty(&hdev->cmd_q))
- hci_sched_cmd(hdev);
- }
- break;
- case EVT_CMD_COMPLETE:
- ec = (evt_cmd_complete *) skb->data;
- skb_pull(skb, EVT_CMD_COMPLETE_SIZE);
- opcode = __le16_to_cpu(ec->opcode);
- ogf = cmd_opcode_ogf(opcode);
- ocf = cmd_opcode_ocf(opcode);
- switch (ogf) {
- case OGF_INFO_PARAM:
- hci_cc_info_param(hdev, ocf, skb);
- break;
- case OGF_HOST_CTL:
- hci_cc_host_ctl(hdev, ocf, skb);
- break;
- case OGF_LINK_CTL:
- hci_cc_link_ctl(hdev, ocf, skb);
- break;
- case OGF_LINK_POLICY:
- hci_cc_link_policy(hdev, ocf, skb);
- break;
- default:
- DBG("%s Command Completed OGF %x", hdev->name, ogf);
- break;
- };
- if (ec->ncmd) {
- atomic_set(&hdev->cmd_cnt, 1);
- if (!skb_queue_empty(&hdev->cmd_q))
- hci_sched_cmd(hdev);
- }
- break;
- };
- kfree_skb(skb);
- hdev->stat.evt_rx++;
- }
- /* ACL data packet */
- static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
- {
- hci_acl_hdr *ah = (void *) skb->data;
- struct hci_conn *conn;
- __u16 handle, flags;
- skb_pull(skb, HCI_ACL_HDR_SIZE);
- handle = __le16_to_cpu(ah->handle);
- flags = acl_flags(handle);
- handle = acl_handle(handle);
- DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, handle, flags);
- if ((conn = conn_hash_lookup(&hdev->conn_hash, handle))) {
- register struct hci_proto *hp;
- /* Send to upper protocol */
- if ((hp = GET_HPROTO(HCI_PROTO_L2CAP)) && hp->recv_acldata) {
- hp->recv_acldata(conn, skb, flags);
- goto sent;
- }
- } else {
- ERR("%s ACL packet for unknown connection handle %d", hdev->name, handle);
- }
- kfree_skb(skb);
- sent:
- hdev->stat.acl_rx++;
- }
- /* SCO data packet */
- static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
- {
- DBG("%s len %d", hdev->name, skb->len);
- kfree_skb(skb);
- hdev->stat.sco_rx++;
- }
- /* ----- HCI tasks ----- */
- void hci_rx_task(unsigned long arg)
- {
- struct hci_dev *hdev = (struct hci_dev *) arg;
- struct sk_buff *skb;
- DBG("%s", hdev->name);
- read_lock(&hci_task_lock);
- while ((skb = skb_dequeue(&hdev->rx_q))) {
- if (hdev->flags & HCI_SOCK) {
- /* Send copy to the sockets */
- hci_send_to_sock(hdev, skb);
- }
- if (hdev->flags & HCI_INIT) {
- /* Don't process data packets in this states. */
- switch (skb->pkt_type) {
- case HCI_ACLDATA_PKT:
- case HCI_SCODATA_PKT:
- kfree_skb(skb);
- continue;
- };
- }
- if (hdev->flags & HCI_NORMAL) {
- /* Process frame */
- switch (skb->pkt_type) {
- case HCI_EVENT_PKT:
- hci_event_packet(hdev, skb);
- break;
- case HCI_ACLDATA_PKT:
- DBG("%s ACL data packet", hdev->name);
- hci_acldata_packet(hdev, skb);
- break;
- case HCI_SCODATA_PKT:
- DBG("%s SCO data packet", hdev->name);
- hci_scodata_packet(hdev, skb);
- break;
- default:
- kfree_skb(skb);
- break;
- };
- } else {
- kfree_skb(skb);
- }
- }
- read_unlock(&hci_task_lock);
- }
- static void hci_tx_task(unsigned long arg)
- {
- struct hci_dev *hdev = (struct hci_dev *) arg;
- struct sk_buff *skb;
- read_lock(&hci_task_lock);
- DBG("%s acl %d sco %d", hdev->name, hdev->acl_cnt, hdev->sco_cnt);
- /* Schedule queues and send stuff to HCI driver */
- hci_sched_acl(hdev);
- hci_sched_sco(hdev);
- /* Send next queued raw (unknown type) packet */
- while ((skb = skb_dequeue(&hdev->raw_q)))
- hci_send_frame(skb);
- read_unlock(&hci_task_lock);
- }
- static void hci_cmd_task(unsigned long arg)
- {
- struct hci_dev *hdev = (struct hci_dev *) arg;
- struct sk_buff *skb;
- DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt));
- /* Send queued commands */
- if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) {
- if (hdev->sent_cmd)
- kfree_skb(hdev->sent_cmd);
- if ((hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC))) {
- atomic_dec(&hdev->cmd_cnt);
- hci_send_frame(skb);
- } else {
- skb_queue_head(&hdev->cmd_q, skb);
- hci_sched_cmd(hdev);
- }
- }
- }
- /* Receive frame from HCI drivers */
- int hci_recv_frame(struct sk_buff *skb)
- {
- struct hci_dev *hdev = (struct hci_dev *) skb->dev;
- if (!hdev || !(hdev->flags & (HCI_UP | HCI_INIT))) {
- kfree_skb(skb);
- return -1;
- }
- DBG("%s type %d len %d", hdev->name, skb->pkt_type, skb->len);
- /* Incomming skb */
- bluez_cb(skb)->incomming = 1;
- /* Queue frame for rx task */
- skb_queue_tail(&hdev->rx_q, skb);
- hci_sched_rx(hdev);
- return 0;
- }
- int hci_core_init(void)
- {
- /* Init locks */
- spin_lock_init(&hdev_list_lock);
- return 0;
- }
- int hci_core_cleanup(void)
- {
- return 0;
- }
- MODULE_LICENSE("GPL");