mirror of https://gitee.com/openkylin/linux.git
681 lines
17 KiB
C
681 lines
17 KiB
C
/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2000-2001 Qualcomm Incorporated
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Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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#ifndef __HCI_CORE_H
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#define __HCI_CORE_H
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#include <net/bluetooth/hci.h>
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/* HCI upper protocols */
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#define HCI_PROTO_L2CAP 0
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#define HCI_PROTO_SCO 1
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/* HCI Core structures */
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struct inquiry_data {
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bdaddr_t bdaddr;
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__u8 pscan_rep_mode;
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__u8 pscan_period_mode;
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__u8 pscan_mode;
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__u8 dev_class[3];
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__le16 clock_offset;
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__s8 rssi;
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__u8 ssp_mode;
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};
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struct inquiry_entry {
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struct inquiry_entry *next;
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__u32 timestamp;
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struct inquiry_data data;
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};
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struct inquiry_cache {
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spinlock_t lock;
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__u32 timestamp;
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struct inquiry_entry *list;
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};
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struct hci_conn_hash {
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struct list_head list;
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spinlock_t lock;
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unsigned int acl_num;
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unsigned int sco_num;
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};
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struct hci_dev {
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struct list_head list;
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spinlock_t lock;
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atomic_t refcnt;
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char name[8];
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unsigned long flags;
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__u16 id;
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__u8 bus;
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__u8 dev_type;
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bdaddr_t bdaddr;
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__u8 dev_name[248];
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__u8 dev_class[3];
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__u8 features[8];
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__u8 commands[64];
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__u8 ssp_mode;
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__u8 hci_ver;
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__u16 hci_rev;
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__u16 manufacturer;
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__u16 voice_setting;
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__u16 pkt_type;
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__u16 esco_type;
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__u16 link_policy;
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__u16 link_mode;
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__u32 idle_timeout;
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__u16 sniff_min_interval;
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__u16 sniff_max_interval;
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unsigned long quirks;
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atomic_t cmd_cnt;
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unsigned int acl_cnt;
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unsigned int sco_cnt;
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unsigned int acl_mtu;
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unsigned int sco_mtu;
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unsigned int acl_pkts;
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unsigned int sco_pkts;
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unsigned long cmd_last_tx;
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unsigned long acl_last_tx;
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unsigned long sco_last_tx;
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struct workqueue_struct *workqueue;
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struct tasklet_struct cmd_task;
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struct tasklet_struct rx_task;
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struct tasklet_struct tx_task;
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struct sk_buff_head rx_q;
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struct sk_buff_head raw_q;
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struct sk_buff_head cmd_q;
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struct sk_buff *sent_cmd;
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struct sk_buff *reassembly[3];
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struct mutex req_lock;
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wait_queue_head_t req_wait_q;
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__u32 req_status;
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__u32 req_result;
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struct inquiry_cache inq_cache;
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struct hci_conn_hash conn_hash;
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struct hci_dev_stats stat;
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struct sk_buff_head driver_init;
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void *driver_data;
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void *core_data;
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atomic_t promisc;
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struct dentry *debugfs;
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struct device *parent;
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struct device dev;
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struct rfkill *rfkill;
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struct module *owner;
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int (*open)(struct hci_dev *hdev);
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int (*close)(struct hci_dev *hdev);
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int (*flush)(struct hci_dev *hdev);
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int (*send)(struct sk_buff *skb);
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void (*destruct)(struct hci_dev *hdev);
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void (*notify)(struct hci_dev *hdev, unsigned int evt);
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int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
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};
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struct hci_conn {
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struct list_head list;
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atomic_t refcnt;
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spinlock_t lock;
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bdaddr_t dst;
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__u16 handle;
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__u16 state;
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__u8 mode;
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__u8 type;
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__u8 out;
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__u8 attempt;
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__u8 dev_class[3];
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__u8 features[8];
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__u8 ssp_mode;
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__u16 interval;
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__u16 pkt_type;
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__u16 link_policy;
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__u32 link_mode;
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__u8 auth_type;
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__u8 sec_level;
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__u8 power_save;
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__u16 disc_timeout;
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unsigned long pend;
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unsigned int sent;
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struct sk_buff_head data_q;
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struct timer_list disc_timer;
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struct timer_list idle_timer;
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struct work_struct work_add;
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struct work_struct work_del;
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struct device dev;
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atomic_t devref;
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struct hci_dev *hdev;
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void *l2cap_data;
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void *sco_data;
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void *priv;
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struct hci_conn *link;
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};
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extern struct hci_proto *hci_proto[];
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extern struct list_head hci_dev_list;
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extern struct list_head hci_cb_list;
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extern rwlock_t hci_dev_list_lock;
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extern rwlock_t hci_cb_list_lock;
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/* ----- Inquiry cache ----- */
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#define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
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#define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
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#define inquiry_cache_lock(c) spin_lock(&c->lock)
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#define inquiry_cache_unlock(c) spin_unlock(&c->lock)
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#define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
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#define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
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static inline void inquiry_cache_init(struct hci_dev *hdev)
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{
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struct inquiry_cache *c = &hdev->inq_cache;
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spin_lock_init(&c->lock);
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c->list = NULL;
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}
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static inline int inquiry_cache_empty(struct hci_dev *hdev)
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{
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struct inquiry_cache *c = &hdev->inq_cache;
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return (c->list == NULL);
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}
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static inline long inquiry_cache_age(struct hci_dev *hdev)
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{
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struct inquiry_cache *c = &hdev->inq_cache;
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return jiffies - c->timestamp;
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}
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static inline long inquiry_entry_age(struct inquiry_entry *e)
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{
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return jiffies - e->timestamp;
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}
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struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
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void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
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/* ----- HCI Connections ----- */
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enum {
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HCI_CONN_AUTH_PEND,
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HCI_CONN_ENCRYPT_PEND,
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HCI_CONN_RSWITCH_PEND,
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HCI_CONN_MODE_CHANGE_PEND,
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};
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static inline void hci_conn_hash_init(struct hci_dev *hdev)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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INIT_LIST_HEAD(&h->list);
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spin_lock_init(&h->lock);
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h->acl_num = 0;
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h->sco_num = 0;
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}
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static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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list_add(&c->list, &h->list);
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if (c->type == ACL_LINK)
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h->acl_num++;
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else
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h->sco_num++;
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}
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static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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list_del(&c->list);
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if (c->type == ACL_LINK)
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h->acl_num--;
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else
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h->sco_num--;
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}
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static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
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__u16 handle)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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struct list_head *p;
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struct hci_conn *c;
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list_for_each(p, &h->list) {
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c = list_entry(p, struct hci_conn, list);
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if (c->handle == handle)
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return c;
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}
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return NULL;
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}
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static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
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__u8 type, bdaddr_t *ba)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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struct list_head *p;
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struct hci_conn *c;
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list_for_each(p, &h->list) {
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c = list_entry(p, struct hci_conn, list);
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if (c->type == type && !bacmp(&c->dst, ba))
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return c;
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}
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return NULL;
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}
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static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
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__u8 type, __u16 state)
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{
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struct hci_conn_hash *h = &hdev->conn_hash;
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struct list_head *p;
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struct hci_conn *c;
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list_for_each(p, &h->list) {
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c = list_entry(p, struct hci_conn, list);
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if (c->type == type && c->state == state)
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return c;
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}
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return NULL;
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}
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void hci_acl_connect(struct hci_conn *conn);
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void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
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void hci_add_sco(struct hci_conn *conn, __u16 handle);
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void hci_setup_sync(struct hci_conn *conn, __u16 handle);
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struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
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int hci_conn_del(struct hci_conn *conn);
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void hci_conn_hash_flush(struct hci_dev *hdev);
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void hci_conn_check_pending(struct hci_dev *hdev);
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struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
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int hci_conn_check_link_mode(struct hci_conn *conn);
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int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
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int hci_conn_change_link_key(struct hci_conn *conn);
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int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
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void hci_conn_enter_active_mode(struct hci_conn *conn);
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void hci_conn_enter_sniff_mode(struct hci_conn *conn);
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void hci_conn_hold_device(struct hci_conn *conn);
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void hci_conn_put_device(struct hci_conn *conn);
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static inline void hci_conn_hold(struct hci_conn *conn)
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{
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atomic_inc(&conn->refcnt);
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del_timer(&conn->disc_timer);
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}
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static inline void hci_conn_put(struct hci_conn *conn)
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{
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if (atomic_dec_and_test(&conn->refcnt)) {
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unsigned long timeo;
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if (conn->type == ACL_LINK) {
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del_timer(&conn->idle_timer);
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if (conn->state == BT_CONNECTED) {
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timeo = msecs_to_jiffies(conn->disc_timeout);
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if (!conn->out)
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timeo *= 2;
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} else
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timeo = msecs_to_jiffies(10);
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} else
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timeo = msecs_to_jiffies(10);
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mod_timer(&conn->disc_timer, jiffies + timeo);
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}
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}
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/* ----- HCI Devices ----- */
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static inline void __hci_dev_put(struct hci_dev *d)
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{
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if (atomic_dec_and_test(&d->refcnt))
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d->destruct(d);
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}
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static inline void hci_dev_put(struct hci_dev *d)
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{
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__hci_dev_put(d);
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module_put(d->owner);
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}
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static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
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{
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atomic_inc(&d->refcnt);
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return d;
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}
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static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
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{
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if (try_module_get(d->owner))
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return __hci_dev_hold(d);
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return NULL;
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}
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#define hci_dev_lock(d) spin_lock(&d->lock)
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#define hci_dev_unlock(d) spin_unlock(&d->lock)
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#define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
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#define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
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struct hci_dev *hci_dev_get(int index);
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struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
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struct hci_dev *hci_alloc_dev(void);
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void hci_free_dev(struct hci_dev *hdev);
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int hci_register_dev(struct hci_dev *hdev);
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int hci_unregister_dev(struct hci_dev *hdev);
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int hci_suspend_dev(struct hci_dev *hdev);
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int hci_resume_dev(struct hci_dev *hdev);
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int hci_dev_open(__u16 dev);
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int hci_dev_close(__u16 dev);
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int hci_dev_reset(__u16 dev);
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int hci_dev_reset_stat(__u16 dev);
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int hci_dev_cmd(unsigned int cmd, void __user *arg);
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int hci_get_dev_list(void __user *arg);
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int hci_get_dev_info(void __user *arg);
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int hci_get_conn_list(void __user *arg);
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int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
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int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
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int hci_inquiry(void __user *arg);
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void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
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int hci_recv_frame(struct sk_buff *skb);
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int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
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int hci_register_sysfs(struct hci_dev *hdev);
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void hci_unregister_sysfs(struct hci_dev *hdev);
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void hci_conn_init_sysfs(struct hci_conn *conn);
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void hci_conn_add_sysfs(struct hci_conn *conn);
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void hci_conn_del_sysfs(struct hci_conn *conn);
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#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
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/* ----- LMP capabilities ----- */
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#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
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#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
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#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
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#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
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#define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
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#define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
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/* ----- HCI protocols ----- */
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struct hci_proto {
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char *name;
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unsigned int id;
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unsigned long flags;
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void *priv;
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int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
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int (*connect_cfm) (struct hci_conn *conn, __u8 status);
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int (*disconn_ind) (struct hci_conn *conn);
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int (*disconn_cfm) (struct hci_conn *conn, __u8 reason);
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int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
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int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
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int (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
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};
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static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
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{
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register struct hci_proto *hp;
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int mask = 0;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->connect_ind)
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mask |= hp->connect_ind(hdev, bdaddr, type);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->connect_ind)
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mask |= hp->connect_ind(hdev, bdaddr, type);
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return mask;
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}
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static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
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{
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register struct hci_proto *hp;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->connect_cfm)
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hp->connect_cfm(conn, status);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->connect_cfm)
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hp->connect_cfm(conn, status);
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}
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static inline int hci_proto_disconn_ind(struct hci_conn *conn)
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{
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register struct hci_proto *hp;
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int reason = 0x13;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->disconn_ind)
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reason = hp->disconn_ind(conn);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->disconn_ind)
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reason = hp->disconn_ind(conn);
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return reason;
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}
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static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
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{
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register struct hci_proto *hp;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->disconn_cfm)
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hp->disconn_cfm(conn, reason);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->disconn_cfm)
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hp->disconn_cfm(conn, reason);
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}
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static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
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{
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register struct hci_proto *hp;
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__u8 encrypt;
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if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
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return;
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encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->security_cfm)
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hp->security_cfm(conn, status, encrypt);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->security_cfm)
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hp->security_cfm(conn, status, encrypt);
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}
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static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
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{
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register struct hci_proto *hp;
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hp = hci_proto[HCI_PROTO_L2CAP];
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if (hp && hp->security_cfm)
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hp->security_cfm(conn, status, encrypt);
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hp = hci_proto[HCI_PROTO_SCO];
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if (hp && hp->security_cfm)
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hp->security_cfm(conn, status, encrypt);
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}
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int hci_register_proto(struct hci_proto *hproto);
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int hci_unregister_proto(struct hci_proto *hproto);
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/* ----- HCI callbacks ----- */
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struct hci_cb {
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struct list_head list;
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char *name;
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void (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
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void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
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void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
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};
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static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
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{
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struct list_head *p;
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__u8 encrypt;
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hci_proto_auth_cfm(conn, status);
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if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
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return;
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encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
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read_lock_bh(&hci_cb_list_lock);
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list_for_each(p, &hci_cb_list) {
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struct hci_cb *cb = list_entry(p, struct hci_cb, list);
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if (cb->security_cfm)
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cb->security_cfm(conn, status, encrypt);
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}
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read_unlock_bh(&hci_cb_list_lock);
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}
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static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
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{
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struct list_head *p;
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if (conn->sec_level == BT_SECURITY_SDP)
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conn->sec_level = BT_SECURITY_LOW;
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hci_proto_encrypt_cfm(conn, status, encrypt);
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read_lock_bh(&hci_cb_list_lock);
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list_for_each(p, &hci_cb_list) {
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struct hci_cb *cb = list_entry(p, struct hci_cb, list);
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if (cb->security_cfm)
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cb->security_cfm(conn, status, encrypt);
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}
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read_unlock_bh(&hci_cb_list_lock);
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}
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static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
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{
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struct list_head *p;
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read_lock_bh(&hci_cb_list_lock);
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list_for_each(p, &hci_cb_list) {
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struct hci_cb *cb = list_entry(p, struct hci_cb, list);
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if (cb->key_change_cfm)
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cb->key_change_cfm(conn, status);
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}
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read_unlock_bh(&hci_cb_list_lock);
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}
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static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
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{
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struct list_head *p;
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read_lock_bh(&hci_cb_list_lock);
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list_for_each(p, &hci_cb_list) {
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struct hci_cb *cb = list_entry(p, struct hci_cb, list);
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if (cb->role_switch_cfm)
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cb->role_switch_cfm(conn, status, role);
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}
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read_unlock_bh(&hci_cb_list_lock);
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}
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int hci_register_cb(struct hci_cb *hcb);
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int hci_unregister_cb(struct hci_cb *hcb);
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int hci_register_notifier(struct notifier_block *nb);
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int hci_unregister_notifier(struct notifier_block *nb);
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int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
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void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
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void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
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void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
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void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
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/* ----- HCI Sockets ----- */
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void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
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/* HCI info for socket */
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#define hci_pi(sk) ((struct hci_pinfo *) sk)
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struct hci_pinfo {
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struct bt_sock bt;
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struct hci_dev *hdev;
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struct hci_filter filter;
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__u32 cmsg_mask;
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};
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/* HCI security filter */
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#define HCI_SFLT_MAX_OGF 5
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struct hci_sec_filter {
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__u32 type_mask;
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__u32 event_mask[2];
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__u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
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};
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/* ----- HCI requests ----- */
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#define HCI_REQ_DONE 0
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#define HCI_REQ_PEND 1
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#define HCI_REQ_CANCELED 2
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#define hci_req_lock(d) mutex_lock(&d->req_lock)
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#define hci_req_unlock(d) mutex_unlock(&d->req_lock)
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void hci_req_complete(struct hci_dev *hdev, int result);
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#endif /* __HCI_CORE_H */
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