forked from Minki/linux
6464f35f37
In case the remote entity tries to negogiate retransmission or flow control mode, reject it and fall back to basic mode. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
266 lines
5.7 KiB
C
266 lines
5.7 KiB
C
/*
|
|
BlueZ - Bluetooth protocol stack for Linux
|
|
Copyright (C) 2000-2001 Qualcomm Incorporated
|
|
|
|
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License version 2 as
|
|
published by the Free Software Foundation;
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
|
|
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
|
|
CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
|
|
COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
|
|
SOFTWARE IS DISCLAIMED.
|
|
*/
|
|
|
|
#ifndef __L2CAP_H
|
|
#define __L2CAP_H
|
|
|
|
/* L2CAP defaults */
|
|
#define L2CAP_DEFAULT_MTU 672
|
|
#define L2CAP_DEFAULT_FLUSH_TO 0xFFFF
|
|
|
|
#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
|
|
#define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
|
|
|
|
/* L2CAP socket address */
|
|
struct sockaddr_l2 {
|
|
sa_family_t l2_family;
|
|
__le16 l2_psm;
|
|
bdaddr_t l2_bdaddr;
|
|
};
|
|
|
|
/* L2CAP socket options */
|
|
#define L2CAP_OPTIONS 0x01
|
|
struct l2cap_options {
|
|
__u16 omtu;
|
|
__u16 imtu;
|
|
__u16 flush_to;
|
|
__u8 mode;
|
|
};
|
|
|
|
#define L2CAP_CONNINFO 0x02
|
|
struct l2cap_conninfo {
|
|
__u16 hci_handle;
|
|
__u8 dev_class[3];
|
|
};
|
|
|
|
#define L2CAP_LM 0x03
|
|
#define L2CAP_LM_MASTER 0x0001
|
|
#define L2CAP_LM_AUTH 0x0002
|
|
#define L2CAP_LM_ENCRYPT 0x0004
|
|
#define L2CAP_LM_TRUSTED 0x0008
|
|
#define L2CAP_LM_RELIABLE 0x0010
|
|
#define L2CAP_LM_SECURE 0x0020
|
|
|
|
/* L2CAP command codes */
|
|
#define L2CAP_COMMAND_REJ 0x01
|
|
#define L2CAP_CONN_REQ 0x02
|
|
#define L2CAP_CONN_RSP 0x03
|
|
#define L2CAP_CONF_REQ 0x04
|
|
#define L2CAP_CONF_RSP 0x05
|
|
#define L2CAP_DISCONN_REQ 0x06
|
|
#define L2CAP_DISCONN_RSP 0x07
|
|
#define L2CAP_ECHO_REQ 0x08
|
|
#define L2CAP_ECHO_RSP 0x09
|
|
#define L2CAP_INFO_REQ 0x0a
|
|
#define L2CAP_INFO_RSP 0x0b
|
|
|
|
/* L2CAP structures */
|
|
struct l2cap_hdr {
|
|
__le16 len;
|
|
__le16 cid;
|
|
} __attribute__ ((packed));
|
|
#define L2CAP_HDR_SIZE 4
|
|
|
|
struct l2cap_cmd_hdr {
|
|
__u8 code;
|
|
__u8 ident;
|
|
__le16 len;
|
|
} __attribute__ ((packed));
|
|
#define L2CAP_CMD_HDR_SIZE 4
|
|
|
|
struct l2cap_cmd_rej {
|
|
__le16 reason;
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_conn_req {
|
|
__le16 psm;
|
|
__le16 scid;
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_conn_rsp {
|
|
__le16 dcid;
|
|
__le16 scid;
|
|
__le16 result;
|
|
__le16 status;
|
|
} __attribute__ ((packed));
|
|
|
|
/* connect result */
|
|
#define L2CAP_CR_SUCCESS 0x0000
|
|
#define L2CAP_CR_PEND 0x0001
|
|
#define L2CAP_CR_BAD_PSM 0x0002
|
|
#define L2CAP_CR_SEC_BLOCK 0x0003
|
|
#define L2CAP_CR_NO_MEM 0x0004
|
|
|
|
/* connect status */
|
|
#define L2CAP_CS_NO_INFO 0x0000
|
|
#define L2CAP_CS_AUTHEN_PEND 0x0001
|
|
#define L2CAP_CS_AUTHOR_PEND 0x0002
|
|
|
|
struct l2cap_conf_req {
|
|
__le16 dcid;
|
|
__le16 flags;
|
|
__u8 data[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_conf_rsp {
|
|
__le16 scid;
|
|
__le16 flags;
|
|
__le16 result;
|
|
__u8 data[0];
|
|
} __attribute__ ((packed));
|
|
|
|
#define L2CAP_CONF_SUCCESS 0x0000
|
|
#define L2CAP_CONF_UNACCEPT 0x0001
|
|
#define L2CAP_CONF_REJECT 0x0002
|
|
#define L2CAP_CONF_UNKNOWN 0x0003
|
|
|
|
struct l2cap_conf_opt {
|
|
__u8 type;
|
|
__u8 len;
|
|
__u8 val[0];
|
|
} __attribute__ ((packed));
|
|
#define L2CAP_CONF_OPT_SIZE 2
|
|
|
|
#define L2CAP_CONF_MTU 0x01
|
|
#define L2CAP_CONF_FLUSH_TO 0x02
|
|
#define L2CAP_CONF_QOS 0x03
|
|
#define L2CAP_CONF_RFC 0x04
|
|
|
|
#define L2CAP_CONF_MAX_SIZE 22
|
|
|
|
struct l2cap_conf_rfc {
|
|
__u8 mode;
|
|
__u8 txwin_size;
|
|
__u8 max_transmit;
|
|
__le16 retrans_timeout;
|
|
__le16 monitor_timeout;
|
|
__le16 max_pdu_size;
|
|
} __attribute__ ((packed));
|
|
|
|
#define L2CAP_MODE_BASIC 0x00
|
|
#define L2CAP_MODE_RETRANS 0x01
|
|
#define L2CAP_MODE_FLOWCTL 0x02
|
|
|
|
struct l2cap_disconn_req {
|
|
__le16 dcid;
|
|
__le16 scid;
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_disconn_rsp {
|
|
__le16 dcid;
|
|
__le16 scid;
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_info_req {
|
|
__le16 type;
|
|
} __attribute__ ((packed));
|
|
|
|
struct l2cap_info_rsp {
|
|
__le16 type;
|
|
__le16 result;
|
|
__u8 data[0];
|
|
} __attribute__ ((packed));
|
|
|
|
/* info type */
|
|
#define L2CAP_IT_CL_MTU 0x0001
|
|
#define L2CAP_IT_FEAT_MASK 0x0002
|
|
|
|
/* info result */
|
|
#define L2CAP_IR_SUCCESS 0x0000
|
|
#define L2CAP_IR_NOTSUPP 0x0001
|
|
|
|
/* ----- L2CAP connections ----- */
|
|
struct l2cap_chan_list {
|
|
struct sock *head;
|
|
rwlock_t lock;
|
|
long num;
|
|
};
|
|
|
|
struct l2cap_conn {
|
|
struct hci_conn *hcon;
|
|
|
|
bdaddr_t *dst;
|
|
bdaddr_t *src;
|
|
|
|
unsigned int mtu;
|
|
|
|
__u32 feat_mask;
|
|
|
|
__u8 info_state;
|
|
__u8 info_ident;
|
|
|
|
struct timer_list info_timer;
|
|
|
|
spinlock_t lock;
|
|
|
|
struct sk_buff *rx_skb;
|
|
__u32 rx_len;
|
|
__u8 rx_ident;
|
|
__u8 tx_ident;
|
|
|
|
struct l2cap_chan_list chan_list;
|
|
};
|
|
|
|
#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
|
|
#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x02
|
|
|
|
/* ----- L2CAP channel and socket info ----- */
|
|
#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
|
|
|
|
struct l2cap_pinfo {
|
|
struct bt_sock bt;
|
|
__le16 psm;
|
|
__u16 dcid;
|
|
__u16 scid;
|
|
|
|
__u16 imtu;
|
|
__u16 omtu;
|
|
__u16 flush_to;
|
|
|
|
__u32 link_mode;
|
|
|
|
__u8 conf_req[64];
|
|
__u8 conf_len;
|
|
__u8 conf_state;
|
|
__u8 conf_retry;
|
|
|
|
__u8 ident;
|
|
|
|
__le16 sport;
|
|
|
|
struct l2cap_conn *conn;
|
|
struct sock *next_c;
|
|
struct sock *prev_c;
|
|
};
|
|
|
|
#define L2CAP_CONF_REQ_SENT 0x01
|
|
#define L2CAP_CONF_INPUT_DONE 0x02
|
|
#define L2CAP_CONF_OUTPUT_DONE 0x04
|
|
|
|
#define L2CAP_CONF_MAX_RETRIES 2
|
|
|
|
void l2cap_load(void);
|
|
|
|
#endif /* __L2CAP_H */
|