1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
354 lines
8.6 KiB
C
354 lines
8.6 KiB
C
/*
|
|
RFCOMM implementation for Linux Bluetooth stack (BlueZ).
|
|
Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
|
|
Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
|
|
|
|
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.
|
|
*/
|
|
|
|
#ifndef __RFCOMM_H
|
|
#define __RFCOMM_H
|
|
|
|
#define RFCOMM_PSM 3
|
|
|
|
#define RFCOMM_CONN_TIMEOUT (HZ * 30)
|
|
#define RFCOMM_DISC_TIMEOUT (HZ * 20)
|
|
#define RFCOMM_AUTH_TIMEOUT (HZ * 25)
|
|
|
|
#define RFCOMM_DEFAULT_MTU 127
|
|
#define RFCOMM_DEFAULT_CREDITS 7
|
|
|
|
#define RFCOMM_MAX_L2CAP_MTU 1024
|
|
#define RFCOMM_MAX_CREDITS 40
|
|
|
|
#define RFCOMM_SKB_HEAD_RESERVE 8
|
|
#define RFCOMM_SKB_TAIL_RESERVE 2
|
|
#define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)
|
|
|
|
#define RFCOMM_SABM 0x2f
|
|
#define RFCOMM_DISC 0x43
|
|
#define RFCOMM_UA 0x63
|
|
#define RFCOMM_DM 0x0f
|
|
#define RFCOMM_UIH 0xef
|
|
|
|
#define RFCOMM_TEST 0x08
|
|
#define RFCOMM_FCON 0x28
|
|
#define RFCOMM_FCOFF 0x18
|
|
#define RFCOMM_MSC 0x38
|
|
#define RFCOMM_RPN 0x24
|
|
#define RFCOMM_RLS 0x14
|
|
#define RFCOMM_PN 0x20
|
|
#define RFCOMM_NSC 0x04
|
|
|
|
#define RFCOMM_V24_FC 0x02
|
|
#define RFCOMM_V24_RTC 0x04
|
|
#define RFCOMM_V24_RTR 0x08
|
|
#define RFCOMM_V24_IC 0x40
|
|
#define RFCOMM_V24_DV 0x80
|
|
|
|
#define RFCOMM_RPN_BR_2400 0x0
|
|
#define RFCOMM_RPN_BR_4800 0x1
|
|
#define RFCOMM_RPN_BR_7200 0x2
|
|
#define RFCOMM_RPN_BR_9600 0x3
|
|
#define RFCOMM_RPN_BR_19200 0x4
|
|
#define RFCOMM_RPN_BR_38400 0x5
|
|
#define RFCOMM_RPN_BR_57600 0x6
|
|
#define RFCOMM_RPN_BR_115200 0x7
|
|
#define RFCOMM_RPN_BR_230400 0x8
|
|
|
|
#define RFCOMM_RPN_DATA_5 0x0
|
|
#define RFCOMM_RPN_DATA_6 0x1
|
|
#define RFCOMM_RPN_DATA_7 0x2
|
|
#define RFCOMM_RPN_DATA_8 0x3
|
|
|
|
#define RFCOMM_RPN_STOP_1 0
|
|
#define RFCOMM_RPN_STOP_15 1
|
|
|
|
#define RFCOMM_RPN_PARITY_NONE 0x0
|
|
#define RFCOMM_RPN_PARITY_ODD 0x4
|
|
#define RFCOMM_RPN_PARITY_EVEN 0x5
|
|
#define RFCOMM_RPN_PARITY_MARK 0x6
|
|
#define RFCOMM_RPN_PARITY_SPACE 0x7
|
|
|
|
#define RFCOMM_RPN_FLOW_NONE 0x00
|
|
|
|
#define RFCOMM_RPN_XON_CHAR 0x11
|
|
#define RFCOMM_RPN_XOFF_CHAR 0x13
|
|
|
|
#define RFCOMM_RPN_PM_BITRATE 0x0001
|
|
#define RFCOMM_RPN_PM_DATA 0x0002
|
|
#define RFCOMM_RPN_PM_STOP 0x0004
|
|
#define RFCOMM_RPN_PM_PARITY 0x0008
|
|
#define RFCOMM_RPN_PM_PARITY_TYPE 0x0010
|
|
#define RFCOMM_RPN_PM_XON 0x0020
|
|
#define RFCOMM_RPN_PM_XOFF 0x0040
|
|
#define RFCOMM_RPN_PM_FLOW 0x3F00
|
|
|
|
#define RFCOMM_RPN_PM_ALL 0x3F7F
|
|
|
|
struct rfcomm_hdr {
|
|
u8 addr;
|
|
u8 ctrl;
|
|
u8 len; // Actual size can be 2 bytes
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_cmd {
|
|
u8 addr;
|
|
u8 ctrl;
|
|
u8 len;
|
|
u8 fcs;
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_mcc {
|
|
u8 type;
|
|
u8 len;
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_pn {
|
|
u8 dlci;
|
|
u8 flow_ctrl;
|
|
u8 priority;
|
|
u8 ack_timer;
|
|
u16 mtu;
|
|
u8 max_retrans;
|
|
u8 credits;
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_rpn {
|
|
u8 dlci;
|
|
u8 bit_rate;
|
|
u8 line_settings;
|
|
u8 flow_ctrl;
|
|
u8 xon_char;
|
|
u8 xoff_char;
|
|
u16 param_mask;
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_rls {
|
|
u8 dlci;
|
|
u8 status;
|
|
} __attribute__ ((packed));
|
|
|
|
struct rfcomm_msc {
|
|
u8 dlci;
|
|
u8 v24_sig;
|
|
} __attribute__ ((packed));
|
|
|
|
/* ---- Core structures, flags etc ---- */
|
|
|
|
struct rfcomm_session {
|
|
struct list_head list;
|
|
struct socket *sock;
|
|
unsigned long state;
|
|
unsigned long flags;
|
|
atomic_t refcnt;
|
|
int initiator;
|
|
|
|
/* Default DLC parameters */
|
|
int cfc;
|
|
uint mtu;
|
|
|
|
struct list_head dlcs;
|
|
};
|
|
|
|
struct rfcomm_dlc {
|
|
struct list_head list;
|
|
struct rfcomm_session *session;
|
|
struct sk_buff_head tx_queue;
|
|
struct timer_list timer;
|
|
|
|
spinlock_t lock;
|
|
unsigned long state;
|
|
unsigned long flags;
|
|
atomic_t refcnt;
|
|
u8 dlci;
|
|
u8 addr;
|
|
u8 priority;
|
|
u8 v24_sig;
|
|
u8 mscex;
|
|
|
|
u32 link_mode;
|
|
|
|
uint mtu;
|
|
uint cfc;
|
|
uint rx_credits;
|
|
uint tx_credits;
|
|
|
|
void *owner;
|
|
|
|
void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb);
|
|
void (*state_change)(struct rfcomm_dlc *d, int err);
|
|
void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig);
|
|
};
|
|
|
|
/* DLC and session flags */
|
|
#define RFCOMM_RX_THROTTLED 0
|
|
#define RFCOMM_TX_THROTTLED 1
|
|
#define RFCOMM_TIMED_OUT 2
|
|
#define RFCOMM_MSC_PENDING 3
|
|
#define RFCOMM_AUTH_PENDING 4
|
|
#define RFCOMM_AUTH_ACCEPT 5
|
|
#define RFCOMM_AUTH_REJECT 6
|
|
|
|
/* Scheduling flags and events */
|
|
#define RFCOMM_SCHED_STATE 0
|
|
#define RFCOMM_SCHED_RX 1
|
|
#define RFCOMM_SCHED_TX 2
|
|
#define RFCOMM_SCHED_TIMEO 3
|
|
#define RFCOMM_SCHED_AUTH 4
|
|
#define RFCOMM_SCHED_WAKEUP 31
|
|
|
|
/* MSC exchange flags */
|
|
#define RFCOMM_MSCEX_TX 1
|
|
#define RFCOMM_MSCEX_RX 2
|
|
#define RFCOMM_MSCEX_OK (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX)
|
|
|
|
/* CFC states */
|
|
#define RFCOMM_CFC_UNKNOWN -1
|
|
#define RFCOMM_CFC_DISABLED 0
|
|
#define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS
|
|
|
|
/* ---- RFCOMM DLCs (channels) ---- */
|
|
struct rfcomm_dlc *rfcomm_dlc_alloc(int prio);
|
|
void rfcomm_dlc_free(struct rfcomm_dlc *d);
|
|
int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
|
|
int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
|
|
int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
|
|
int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
|
|
int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
|
|
|
|
#define rfcomm_dlc_lock(d) spin_lock(&d->lock)
|
|
#define rfcomm_dlc_unlock(d) spin_unlock(&d->lock)
|
|
|
|
static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
|
|
{
|
|
atomic_inc(&d->refcnt);
|
|
}
|
|
|
|
static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
|
|
{
|
|
if (atomic_dec_and_test(&d->refcnt))
|
|
rfcomm_dlc_free(d);
|
|
}
|
|
|
|
extern void FASTCALL(__rfcomm_dlc_throttle(struct rfcomm_dlc *d));
|
|
extern void FASTCALL(__rfcomm_dlc_unthrottle(struct rfcomm_dlc *d));
|
|
|
|
static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
|
|
{
|
|
if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
|
|
__rfcomm_dlc_throttle(d);
|
|
}
|
|
|
|
static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
|
|
{
|
|
if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
|
|
__rfcomm_dlc_unthrottle(d);
|
|
}
|
|
|
|
/* ---- RFCOMM sessions ---- */
|
|
void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, bdaddr_t *dst);
|
|
|
|
static inline void rfcomm_session_hold(struct rfcomm_session *s)
|
|
{
|
|
atomic_inc(&s->refcnt);
|
|
}
|
|
|
|
/* ---- RFCOMM chechsum ---- */
|
|
extern u8 rfcomm_crc_table[];
|
|
|
|
/* ---- RFCOMM sockets ---- */
|
|
struct sockaddr_rc {
|
|
sa_family_t rc_family;
|
|
bdaddr_t rc_bdaddr;
|
|
u8 rc_channel;
|
|
};
|
|
|
|
#define RFCOMM_CONNINFO 0x02
|
|
struct rfcomm_conninfo {
|
|
__u16 hci_handle;
|
|
__u8 dev_class[3];
|
|
};
|
|
|
|
#define RFCOMM_LM 0x03
|
|
#define RFCOMM_LM_MASTER 0x0001
|
|
#define RFCOMM_LM_AUTH 0x0002
|
|
#define RFCOMM_LM_ENCRYPT 0x0004
|
|
#define RFCOMM_LM_TRUSTED 0x0008
|
|
#define RFCOMM_LM_RELIABLE 0x0010
|
|
#define RFCOMM_LM_SECURE 0x0020
|
|
|
|
#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk)
|
|
|
|
struct rfcomm_pinfo {
|
|
struct bt_sock bt;
|
|
struct rfcomm_dlc *dlc;
|
|
u8 channel;
|
|
u32 link_mode;
|
|
};
|
|
|
|
int rfcomm_init_sockets(void);
|
|
void rfcomm_cleanup_sockets(void);
|
|
|
|
int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d);
|
|
|
|
/* ---- RFCOMM TTY ---- */
|
|
#define RFCOMM_MAX_DEV 256
|
|
|
|
#define RFCOMMCREATEDEV _IOW('R', 200, int)
|
|
#define RFCOMMRELEASEDEV _IOW('R', 201, int)
|
|
#define RFCOMMGETDEVLIST _IOR('R', 210, int)
|
|
#define RFCOMMGETDEVINFO _IOR('R', 211, int)
|
|
#define RFCOMMSTEALDLC _IOW('R', 220, int)
|
|
|
|
#define RFCOMM_REUSE_DLC 0
|
|
#define RFCOMM_RELEASE_ONHUP 1
|
|
#define RFCOMM_HANGUP_NOW 2
|
|
#define RFCOMM_TTY_ATTACHED 3
|
|
|
|
struct rfcomm_dev_req {
|
|
s16 dev_id;
|
|
u32 flags;
|
|
bdaddr_t src;
|
|
bdaddr_t dst;
|
|
u8 channel;
|
|
|
|
};
|
|
|
|
struct rfcomm_dev_info {
|
|
s16 id;
|
|
u32 flags;
|
|
u16 state;
|
|
bdaddr_t src;
|
|
bdaddr_t dst;
|
|
u8 channel;
|
|
};
|
|
|
|
struct rfcomm_dev_list_req {
|
|
u16 dev_num;
|
|
struct rfcomm_dev_info dev_info[0];
|
|
};
|
|
|
|
int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
|
|
int rfcomm_init_ttys(void);
|
|
void rfcomm_cleanup_ttys(void);
|
|
|
|
extern struct proc_dir_entry *proc_bt_rfcomm;
|
|
|
|
#endif /* __RFCOMM_H */
|