hci_core.h
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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.
- */
- /*
- * $Id: hci_core.h,v 1.5 2002/06/27 04:56:30 maxk Exp $
- */
- #ifndef __HCI_CORE_H
- #define __HCI_CORE_H
- #include <net/bluetooth/hci.h>
- /* HCI upper protocols */
- #define HCI_PROTO_L2CAP 0
- #define HCI_PROTO_SCO 1
- #define HCI_INIT_TIMEOUT (HZ * 10)
- /* HCI Core structures */
- struct inquiry_entry {
- struct inquiry_entry *next;
- __u32 timestamp;
- inquiry_info info;
- };
- struct inquiry_cache {
- spinlock_t lock;
- __u32 timestamp;
- struct inquiry_entry *list;
- };
- struct conn_hash {
- struct list_head list;
- spinlock_t lock;
- unsigned int num;
- };
- struct hci_dev {
- struct list_head list;
- spinlock_t lock;
- atomic_t refcnt;
- char name[8];
- unsigned long flags;
- __u16 id;
- __u8 type;
- bdaddr_t bdaddr;
- __u8 features[8];
- __u16 pkt_type;
- __u16 link_policy;
- __u16 link_mode;
-
- atomic_t cmd_cnt;
- unsigned int acl_cnt;
- unsigned int sco_cnt;
- unsigned int acl_mtu;
- unsigned int sco_mtu;
- unsigned int acl_pkts;
- unsigned int sco_pkts;
- unsigned long cmd_last_tx;
- unsigned long acl_last_tx;
- unsigned long sco_last_tx;
-
- struct tasklet_struct cmd_task;
- struct tasklet_struct rx_task;
- struct tasklet_struct tx_task;
- struct sk_buff_head rx_q;
- struct sk_buff_head raw_q;
- struct sk_buff_head cmd_q;
- struct sk_buff *sent_cmd;
- struct semaphore req_lock;
- wait_queue_head_t req_wait_q;
- __u32 req_status;
- __u32 req_result;
- struct inquiry_cache inq_cache;
- struct conn_hash conn_hash;
- struct hci_dev_stats stat;
- void *driver_data;
- void *core_data;
- atomic_t promisc;
- int (*open)(struct hci_dev *hdev);
- int (*close)(struct hci_dev *hdev);
- int (*flush)(struct hci_dev *hdev);
- int (*send)(struct sk_buff *skb);
- void (*destruct)(struct hci_dev *hdev);
- int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
- };
- struct hci_conn {
- struct list_head list;
- atomic_t refcnt;
- spinlock_t lock;
- bdaddr_t dst;
- __u16 handle;
- __u16 state;
- __u8 type;
- __u8 out;
- __u32 link_mode;
- unsigned long pend;
-
- unsigned int sent;
-
- struct sk_buff_head data_q;
- struct timer_list timer;
-
- struct hci_dev *hdev;
- void *l2cap_data;
- void *sco_data;
- void *priv;
- struct hci_conn *link;
- };
- extern struct hci_proto *hci_proto[];
- extern struct list_head hdev_list;
- extern rwlock_t hdev_list_lock;
- /* ----- Inquiry cache ----- */
- #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
- #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
- #define inquiry_cache_lock(c) spin_lock(&c->lock)
- #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
- #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
- #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
- static inline void inquiry_cache_init(struct hci_dev *hdev)
- {
- struct inquiry_cache *c = &hdev->inq_cache;
- spin_lock_init(&c->lock);
- c->list = NULL;
- }
- static inline long inquiry_cache_age(struct hci_dev *hdev)
- {
- struct inquiry_cache *c = &hdev->inq_cache;
- return jiffies - c->timestamp;
- }
- static inline long inquiry_entry_age(struct inquiry_entry *e)
- {
- return jiffies - e->timestamp;
- }
- struct inquiry_entry *inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
- void inquiry_cache_update(struct hci_dev *hdev, inquiry_info *info);
- void inquiry_cache_flush(struct hci_dev *hdev);
- int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf);
- /* ----- HCI Connections ----- */
- enum {
- HCI_CONN_AUTH_PEND,
- HCI_CONN_ENCRYPT_PEND
- };
- #define hci_conn_lock(c) spin_lock(&c->lock)
- #define hci_conn_unlock(c) spin_unlock(&c->lock)
- #define hci_conn_lock_bh(c) spin_lock_bh(&c->lock)
- #define hci_conn_unlock_bh(c) spin_unlock_bh(&c->lock)
- #define conn_hash_lock(d) spin_lock(&d->conn_hash->lock)
- #define conn_hash_unlock(d) spin_unlock(&d->conn_hash->lock)
- #define conn_hash_lock_bh(d) spin_lock_bh(&d->conn_hash->lock)
- #define conn_hash_unlock_bh(d) spin_unlock_bh(&d->conn_hash->lock)
- static inline void conn_hash_init(struct hci_dev *hdev)
- {
- struct conn_hash *h = &hdev->conn_hash;
- INIT_LIST_HEAD(&h->list);
- spin_lock_init(&h->lock);
- h->num = 0;
- }
- static inline void conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
- {
- struct conn_hash *h = &hdev->conn_hash;
- list_add(&c->list, &h->list);
- h->num++;
- }
- static inline void conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
- {
- struct conn_hash *h = &hdev->conn_hash;
- list_del(&c->list);
- h->num--;
- }
- static inline struct hci_conn *conn_hash_lookup_handle(struct hci_dev *hdev,
- __u16 handle)
- {
- register struct conn_hash *h = &hdev->conn_hash;
- register struct list_head *p;
- register struct hci_conn *c;
- list_for_each(p, &h->list) {
- c = list_entry(p, struct hci_conn, list);
- if (c->handle == handle)
- return c;
- }
- return NULL;
- }
- static inline struct hci_conn *conn_hash_lookup_ba(struct hci_dev *hdev,
- __u8 type, bdaddr_t *ba)
- {
- register struct conn_hash *h = &hdev->conn_hash;
- register struct list_head *p;
- register struct hci_conn *c;
- list_for_each(p, &h->list) {
- c = list_entry(p, struct hci_conn, list);
- if (c->type == type && !bacmp(&c->dst, ba))
- return c;
- }
- return NULL;
- }
- void hci_acl_connect(struct hci_conn *conn);
- void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
- void hci_add_sco(struct hci_conn *conn, __u16 handle);
- struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
- int hci_conn_del(struct hci_conn *conn);
- void hci_conn_hash_flush(struct hci_dev *hdev);
- struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
- int hci_conn_auth(struct hci_conn *conn);
- int hci_conn_encrypt(struct hci_conn *conn);
- static inline void hci_conn_set_timer(struct hci_conn *conn, long timeout)
- {
- mod_timer(&conn->timer, jiffies + timeout);
- }
- static inline void hci_conn_del_timer(struct hci_conn *conn)
- {
- del_timer(&conn->timer);
- }
- static inline void hci_conn_hold(struct hci_conn *conn)
- {
- atomic_inc(&conn->refcnt);
- hci_conn_del_timer(conn);
- }
- static inline void hci_conn_put(struct hci_conn *conn)
- {
- if (atomic_dec_and_test(&conn->refcnt) && conn->out)
- hci_conn_set_timer(conn, HCI_DISCONN_TIMEOUT);
- }
- /* ----- HCI Devices ----- */
- static inline void hci_dev_put(struct hci_dev *d)
- {
- if (atomic_dec_and_test(&d->refcnt))
- d->destruct(d);
- }
- #define hci_dev_hold(d) atomic_inc(&d->refcnt)
- #define hci_dev_lock(d) spin_lock(&d->lock)
- #define hci_dev_unlock(d) spin_unlock(&d->lock)
- #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
- #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
- struct hci_dev *hci_dev_get(int index);
- struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
- int hci_register_dev(struct hci_dev *hdev);
- int hci_unregister_dev(struct hci_dev *hdev);
- int hci_dev_open(__u16 dev);
- int hci_dev_close(__u16 dev);
- int hci_dev_reset(__u16 dev);
- int hci_dev_reset_stat(__u16 dev);
- int hci_dev_cmd(unsigned int cmd, unsigned long arg);
- int hci_get_dev_list(unsigned long arg);
- int hci_get_dev_info(unsigned long arg);
- int hci_get_conn_list(unsigned long arg);
- int hci_get_conn_info(struct hci_dev *hdev, unsigned long arg);
- int hci_inquiry(unsigned long arg);
- int hci_recv_frame(struct sk_buff *skb);
- void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
- /* ----- LMP capabilities ----- */
- #define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH)
- #define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT)
- /* ----- HCI tasks ----- */
- static inline void hci_sched_cmd(struct hci_dev *hdev)
- {
- tasklet_schedule(&hdev->cmd_task);
- }
- static inline void hci_sched_rx(struct hci_dev *hdev)
- {
- tasklet_schedule(&hdev->rx_task);
- }
- static inline void hci_sched_tx(struct hci_dev *hdev)
- {
- tasklet_schedule(&hdev->tx_task);
- }
- /* ----- HCI protocols ----- */
- struct hci_proto {
- char *name;
- unsigned int id;
- unsigned long flags;
- void *priv;
- int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
- int (*connect_cfm) (struct hci_conn *conn, __u8 status);
- int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
- int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
- int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
- int (*auth_cfm) (struct hci_conn *conn, __u8 status);
- int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
- };
- static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
- {
- register struct hci_proto *hp;
- int mask = 0;
-
- hp = hci_proto[HCI_PROTO_L2CAP];
- if (hp && hp->connect_ind)
- mask |= hp->connect_ind(hdev, bdaddr, type);
- hp = hci_proto[HCI_PROTO_SCO];
- if (hp && hp->connect_ind)
- mask |= hp->connect_ind(hdev, bdaddr, type);
- return mask;
- }
- static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
- {
- register struct hci_proto *hp;
- hp = hci_proto[HCI_PROTO_L2CAP];
- if (hp && hp->connect_cfm)
- hp->connect_cfm(conn, status);
- hp = hci_proto[HCI_PROTO_SCO];
- if (hp && hp->connect_cfm)
- hp->connect_cfm(conn, status);
- }
- static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
- {
- register struct hci_proto *hp;
- hp = hci_proto[HCI_PROTO_L2CAP];
- if (hp && hp->disconn_ind)
- hp->disconn_ind(conn, reason);
- hp = hci_proto[HCI_PROTO_SCO];
- if (hp && hp->disconn_ind)
- hp->disconn_ind(conn, reason);
- }
- static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
- {
- register struct hci_proto *hp;
- hp = hci_proto[HCI_PROTO_L2CAP];
- if (hp && hp->auth_cfm)
- hp->auth_cfm(conn, status);
- hp = hci_proto[HCI_PROTO_SCO];
- if (hp && hp->auth_cfm)
- hp->auth_cfm(conn, status);
- }
- static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
- {
- register struct hci_proto *hp;
- hp = hci_proto[HCI_PROTO_L2CAP];
- if (hp && hp->encrypt_cfm)
- hp->encrypt_cfm(conn, status);
- hp = hci_proto[HCI_PROTO_SCO];
- if (hp && hp->encrypt_cfm)
- hp->encrypt_cfm(conn, status);
- }
- int hci_register_proto(struct hci_proto *hproto);
- int hci_unregister_proto(struct hci_proto *hproto);
- int hci_register_notifier(struct notifier_block *nb);
- int hci_unregister_notifier(struct notifier_block *nb);
- int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
- int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
- int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
- int hci_send_raw(struct sk_buff *skb);
- void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
- void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
- /* ----- HCI Sockets ----- */
- void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
- /* HCI info for socket */
- #define hci_pi(sk) ((struct hci_pinfo *) &sk->tp_pinfo)
- struct hci_pinfo {
- struct hci_dev *hdev;
- struct hci_filter filter;
- __u32 cmsg_mask;
- };
- /* HCI security filter */
- #define HCI_SFLT_MAX_OGF 4
- struct hci_sec_filter {
- __u32 type_mask;
- __u32 event_mask[2];
- __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
- };
- /* ----- HCI requests ----- */
- #define HCI_REQ_DONE 0
- #define HCI_REQ_PEND 1
- #define HCI_REQ_CANCELED 2
- #define hci_req_lock(d) down(&d->req_lock)
- #define hci_req_unlock(d) up(&d->req_lock)
- void hci_req_complete(struct hci_dev *hdev, int result);
- void hci_req_cancel(struct hci_dev *hdev, int err);
- #endif /* __HCI_CORE_H */