656 lines
16 KiB
C
656 lines
16 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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};
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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 type;
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bdaddr_t bdaddr;
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__u8 features[8];
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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 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 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 semaphore 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 device *parent;
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struct device dev;
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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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__u16 interval;
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__u16 link_policy;
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__u32 link_mode;
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__u8 power_save;
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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;
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struct device dev;
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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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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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struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
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int hci_conn_auth(struct hci_conn *conn);
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int hci_conn_encrypt(struct hci_conn *conn);
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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, uint8_t 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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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(HCI_DISCONN_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 tasks ----- */
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static inline void hci_sched_cmd(struct hci_dev *hdev)
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{
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tasklet_schedule(&hdev->cmd_task);
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}
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static inline void hci_sched_rx(struct hci_dev *hdev)
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{
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tasklet_schedule(&hdev->rx_task);
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}
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static inline void hci_sched_tx(struct hci_dev *hdev)
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{
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tasklet_schedule(&hdev->tx_task);
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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_inquiry(void __user *arg);
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void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
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/* Receive frame from HCI drivers */
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static inline int hci_recv_frame(struct sk_buff *skb)
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{
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struct hci_dev *hdev = (struct hci_dev *) skb->dev;
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if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
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&& !test_bit(HCI_INIT, &hdev->flags))) {
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kfree_skb(skb);
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return -ENXIO;
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}
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/* Incomming skb */
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bt_cb(skb)->incoming = 1;
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/* Time stamp */
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__net_timestamp(skb);
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/* Queue frame for rx task */
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skb_queue_tail(&hdev->rx_q, skb);
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hci_sched_rx(hdev);
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return 0;
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}
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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_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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/* ----- 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, __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 (*auth_cfm) (struct hci_conn *conn, __u8 status);
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int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
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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 void hci_proto_disconn_ind(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_ind)
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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);
|
|
|
|
/* ----- HCI callbacks ----- */
|
|
struct hci_cb {
|
|
struct list_head list;
|
|
|
|
char *name;
|
|
|
|
void (*auth_cfm) (struct hci_conn *conn, __u8 status);
|
|
void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
|
|
void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
|
|
void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
|
|
};
|
|
|
|
static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
|
|
{
|
|
struct list_head *p;
|
|
|
|
hci_proto_auth_cfm(conn, status);
|
|
|
|
read_lock_bh(&hci_cb_list_lock);
|
|
list_for_each(p, &hci_cb_list) {
|
|
struct hci_cb *cb = list_entry(p, struct hci_cb, list);
|
|
if (cb->auth_cfm)
|
|
cb->auth_cfm(conn, status);
|
|
}
|
|
read_unlock_bh(&hci_cb_list_lock);
|
|
}
|
|
|
|
static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
|
|
{
|
|
struct list_head *p;
|
|
|
|
hci_proto_encrypt_cfm(conn, status);
|
|
|
|
read_lock_bh(&hci_cb_list_lock);
|
|
list_for_each(p, &hci_cb_list) {
|
|
struct hci_cb *cb = list_entry(p, struct hci_cb, list);
|
|
if (cb->encrypt_cfm)
|
|
cb->encrypt_cfm(conn, status, encrypt);
|
|
}
|
|
read_unlock_bh(&hci_cb_list_lock);
|
|
}
|
|
|
|
static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
|
|
{
|
|
struct list_head *p;
|
|
|
|
read_lock_bh(&hci_cb_list_lock);
|
|
list_for_each(p, &hci_cb_list) {
|
|
struct hci_cb *cb = list_entry(p, struct hci_cb, list);
|
|
if (cb->key_change_cfm)
|
|
cb->key_change_cfm(conn, status);
|
|
}
|
|
read_unlock_bh(&hci_cb_list_lock);
|
|
}
|
|
|
|
static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
|
|
{
|
|
struct list_head *p;
|
|
|
|
read_lock_bh(&hci_cb_list_lock);
|
|
list_for_each(p, &hci_cb_list) {
|
|
struct hci_cb *cb = list_entry(p, struct hci_cb, list);
|
|
if (cb->role_switch_cfm)
|
|
cb->role_switch_cfm(conn, status, role);
|
|
}
|
|
read_unlock_bh(&hci_cb_list_lock);
|
|
}
|
|
|
|
int hci_register_cb(struct hci_cb *hcb);
|
|
int hci_unregister_cb(struct hci_cb *hcb);
|
|
|
|
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);
|
|
|
|
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)
|
|
|
|
struct hci_pinfo {
|
|
struct bt_sock bt;
|
|
struct hci_dev *hdev;
|
|
struct hci_filter filter;
|
|
__u32 cmsg_mask;
|
|
};
|
|
|
|
/* HCI security filter */
|
|
#define HCI_SFLT_MAX_OGF 5
|
|
|
|
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);
|
|
|
|
#endif /* __HCI_CORE_H */
|