diff options
Diffstat (limited to 'include/net/bluetooth/rfcomm.h')
| -rw-r--r-- | include/net/bluetooth/rfcomm.h | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h new file mode 100644 index 000000000..da4acefe3 --- /dev/null +++ b/include/net/bluetooth/rfcomm.h @@ -0,0 +1,376 @@ +/* + 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. +*/ + +#include <linux/refcount.h> + +#ifndef __RFCOMM_H +#define __RFCOMM_H + +#define RFCOMM_CONN_TIMEOUT (HZ * 30) +#define RFCOMM_DISC_TIMEOUT (HZ * 20) +#define RFCOMM_AUTH_TIMEOUT (HZ * 25) +#define RFCOMM_IDLE_TIMEOUT (HZ * 2) + +#define RFCOMM_DEFAULT_MTU 127 +#define RFCOMM_DEFAULT_CREDITS 7 + +#define RFCOMM_MAX_L2CAP_MTU 1013 +#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 0x1 +#define RFCOMM_RPN_PARITY_EVEN 0x3 +#define RFCOMM_RPN_PARITY_MARK 0x5 +#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 */ +} __packed; + +struct rfcomm_cmd { + u8 addr; + u8 ctrl; + u8 len; + u8 fcs; +} __packed; + +struct rfcomm_mcc { + u8 type; + u8 len; +} __packed; + +struct rfcomm_pn { + u8 dlci; + u8 flow_ctrl; + u8 priority; + u8 ack_timer; + __le16 mtu; + u8 max_retrans; + u8 credits; +} __packed; + +struct rfcomm_rpn { + u8 dlci; + u8 bit_rate; + u8 line_settings; + u8 flow_ctrl; + u8 xon_char; + u8 xoff_char; + __le16 param_mask; +} __packed; + +struct rfcomm_rls { + u8 dlci; + u8 status; +} __packed; + +struct rfcomm_msc { + u8 dlci; + u8 v24_sig; +} __packed; + +/* ---- Core structures, flags etc ---- */ + +struct rfcomm_session { + struct list_head list; + struct socket *sock; + struct timer_list timer; + unsigned long state; + unsigned long flags; + 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; + + struct mutex lock; + unsigned long state; + unsigned long flags; + refcount_t refcnt; + u8 dlci; + u8 addr; + u8 priority; + u8 v24_sig; + u8 remote_v24_sig; + u8 mscex; + u8 out; + u8 sec_level; + u8 role_switch; + u32 defer_setup; + + 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_SEC_PENDING 4 +#define RFCOMM_AUTH_PENDING 5 +#define RFCOMM_AUTH_ACCEPT 6 +#define RFCOMM_AUTH_REJECT 7 +#define RFCOMM_DEFER_SETUP 8 +#define RFCOMM_ENC_DROP 9 + +/* Scheduling flags and events */ +#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 SEND RPN ---- */ +int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci, + u8 bit_rate, u8 data_bits, u8 stop_bits, + u8 parity, u8 flow_ctrl_settings, + u8 xon_char, u8 xoff_char, u16 param_mask); + +/* ---- RFCOMM DLCs (channels) ---- */ +struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t 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); +void rfcomm_dlc_send_noerror(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); +void rfcomm_dlc_accept(struct rfcomm_dlc *d); +struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel); + +#define rfcomm_dlc_lock(d) mutex_lock(&d->lock) +#define rfcomm_dlc_unlock(d) mutex_unlock(&d->lock) + +static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d) +{ + refcount_inc(&d->refcnt); +} + +static inline void rfcomm_dlc_put(struct rfcomm_dlc *d) +{ + if (refcount_dec_and_test(&d->refcnt)) + rfcomm_dlc_free(d); +} + +void __rfcomm_dlc_throttle(struct rfcomm_dlc *d); +void __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); + +/* ---- 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_LM_FIPS 0x0040 + +#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk) + +struct rfcomm_pinfo { + struct bt_sock bt; + bdaddr_t src; + bdaddr_t dst; + struct rfcomm_dlc *dlc; + u8 channel; + u8 sec_level; + u8 role_switch; +}; + +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) + +/* rfcomm_dev.flags bit definitions */ +#define RFCOMM_REUSE_DLC 0 +#define RFCOMM_RELEASE_ONHUP 1 +#define RFCOMM_HANGUP_NOW 2 +#define RFCOMM_TTY_ATTACHED 3 +#define RFCOMM_DEFUNCT_BIT4 4 /* don't reuse this bit - userspace visible */ + +/* rfcomm_dev.status bit definitions */ +#define RFCOMM_DEV_RELEASED 0 +#define RFCOMM_TTY_OWNED 1 + +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); + +#ifdef CONFIG_BT_RFCOMM_TTY +int rfcomm_init_ttys(void); +void rfcomm_cleanup_ttys(void); +#else +static inline int rfcomm_init_ttys(void) +{ + return 0; +} +static inline void rfcomm_cleanup_ttys(void) +{ +} +#endif +#endif /* __RFCOMM_H */ |