mirror of https://gitee.com/openkylin/linux.git
894 lines
21 KiB
C
894 lines
21 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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Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
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Copyright (C) 2010 Google Inc.
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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 __L2CAP_H
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#define __L2CAP_H
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#include <asm/unaligned.h>
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/* L2CAP defaults */
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#define L2CAP_DEFAULT_MTU 672
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#define L2CAP_DEFAULT_MIN_MTU 48
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#define L2CAP_DEFAULT_FLUSH_TO 0xFFFF
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#define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF
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#define L2CAP_DEFAULT_TX_WINDOW 63
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#define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
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#define L2CAP_DEFAULT_MAX_TX 3
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#define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
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#define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
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#define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */
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#define L2CAP_DEFAULT_ACK_TO 200
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#define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
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#define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
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#define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
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#define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */
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#define L2CAP_LE_MIN_MTU 23
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#define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
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#define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
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#define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
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#define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
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#define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
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#define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000)
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#define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000)
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#define L2CAP_A2MP_DEFAULT_MTU 670
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/* L2CAP socket address */
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struct sockaddr_l2 {
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sa_family_t l2_family;
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__le16 l2_psm;
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bdaddr_t l2_bdaddr;
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__le16 l2_cid;
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__u8 l2_bdaddr_type;
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};
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/* L2CAP socket options */
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#define L2CAP_OPTIONS 0x01
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struct l2cap_options {
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__u16 omtu;
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__u16 imtu;
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__u16 flush_to;
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__u8 mode;
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__u8 fcs;
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__u8 max_tx;
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__u16 txwin_size;
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};
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#define L2CAP_CONNINFO 0x02
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struct l2cap_conninfo {
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__u16 hci_handle;
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__u8 dev_class[3];
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};
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#define L2CAP_LM 0x03
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#define L2CAP_LM_MASTER 0x0001
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#define L2CAP_LM_AUTH 0x0002
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#define L2CAP_LM_ENCRYPT 0x0004
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#define L2CAP_LM_TRUSTED 0x0008
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#define L2CAP_LM_RELIABLE 0x0010
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#define L2CAP_LM_SECURE 0x0020
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/* L2CAP command codes */
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#define L2CAP_COMMAND_REJ 0x01
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#define L2CAP_CONN_REQ 0x02
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#define L2CAP_CONN_RSP 0x03
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#define L2CAP_CONF_REQ 0x04
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#define L2CAP_CONF_RSP 0x05
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#define L2CAP_DISCONN_REQ 0x06
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#define L2CAP_DISCONN_RSP 0x07
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#define L2CAP_ECHO_REQ 0x08
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#define L2CAP_ECHO_RSP 0x09
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#define L2CAP_INFO_REQ 0x0a
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#define L2CAP_INFO_RSP 0x0b
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#define L2CAP_CREATE_CHAN_REQ 0x0c
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#define L2CAP_CREATE_CHAN_RSP 0x0d
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#define L2CAP_MOVE_CHAN_REQ 0x0e
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#define L2CAP_MOVE_CHAN_RSP 0x0f
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#define L2CAP_MOVE_CHAN_CFM 0x10
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#define L2CAP_MOVE_CHAN_CFM_RSP 0x11
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#define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
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#define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
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#define L2CAP_LE_CONN_REQ 0x14
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#define L2CAP_LE_CONN_RSP 0x15
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#define L2CAP_LE_CREDITS 0x16
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/* L2CAP extended feature mask */
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#define L2CAP_FEAT_FLOWCTL 0x00000001
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#define L2CAP_FEAT_RETRANS 0x00000002
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#define L2CAP_FEAT_BIDIR_QOS 0x00000004
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#define L2CAP_FEAT_ERTM 0x00000008
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#define L2CAP_FEAT_STREAMING 0x00000010
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#define L2CAP_FEAT_FCS 0x00000020
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#define L2CAP_FEAT_EXT_FLOW 0x00000040
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#define L2CAP_FEAT_FIXED_CHAN 0x00000080
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#define L2CAP_FEAT_EXT_WINDOW 0x00000100
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#define L2CAP_FEAT_UCD 0x00000200
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/* L2CAP checksum option */
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#define L2CAP_FCS_NONE 0x00
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#define L2CAP_FCS_CRC16 0x01
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/* L2CAP fixed channels */
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#define L2CAP_FC_L2CAP 0x02
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#define L2CAP_FC_CONNLESS 0x04
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#define L2CAP_FC_A2MP 0x08
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#define L2CAP_FC_6LOWPAN 0x3e /* reserved and temporary value */
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/* L2CAP Control Field bit masks */
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#define L2CAP_CTRL_SAR 0xC000
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#define L2CAP_CTRL_REQSEQ 0x3F00
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#define L2CAP_CTRL_TXSEQ 0x007E
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#define L2CAP_CTRL_SUPERVISE 0x000C
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#define L2CAP_CTRL_RETRANS 0x0080
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#define L2CAP_CTRL_FINAL 0x0080
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#define L2CAP_CTRL_POLL 0x0010
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#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
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#define L2CAP_CTRL_TXSEQ_SHIFT 1
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#define L2CAP_CTRL_SUPER_SHIFT 2
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#define L2CAP_CTRL_POLL_SHIFT 4
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#define L2CAP_CTRL_FINAL_SHIFT 7
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#define L2CAP_CTRL_REQSEQ_SHIFT 8
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#define L2CAP_CTRL_SAR_SHIFT 14
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/* L2CAP Extended Control Field bit mask */
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#define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
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#define L2CAP_EXT_CTRL_SAR 0x00030000
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#define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
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#define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
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#define L2CAP_EXT_CTRL_POLL 0x00040000
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#define L2CAP_EXT_CTRL_FINAL 0x00000002
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#define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
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#define L2CAP_EXT_CTRL_FINAL_SHIFT 1
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#define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
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#define L2CAP_EXT_CTRL_SAR_SHIFT 16
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#define L2CAP_EXT_CTRL_SUPER_SHIFT 16
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#define L2CAP_EXT_CTRL_POLL_SHIFT 18
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#define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
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/* L2CAP Supervisory Function */
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#define L2CAP_SUPER_RR 0x00
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#define L2CAP_SUPER_REJ 0x01
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#define L2CAP_SUPER_RNR 0x02
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#define L2CAP_SUPER_SREJ 0x03
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/* L2CAP Segmentation and Reassembly */
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#define L2CAP_SAR_UNSEGMENTED 0x00
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#define L2CAP_SAR_START 0x01
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#define L2CAP_SAR_END 0x02
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#define L2CAP_SAR_CONTINUE 0x03
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/* L2CAP Command rej. reasons */
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#define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
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#define L2CAP_REJ_MTU_EXCEEDED 0x0001
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#define L2CAP_REJ_INVALID_CID 0x0002
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/* L2CAP structures */
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struct l2cap_hdr {
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__le16 len;
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__le16 cid;
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} __packed;
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#define L2CAP_HDR_SIZE 4
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#define L2CAP_ENH_HDR_SIZE 6
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#define L2CAP_EXT_HDR_SIZE 8
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#define L2CAP_FCS_SIZE 2
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#define L2CAP_SDULEN_SIZE 2
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#define L2CAP_PSMLEN_SIZE 2
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#define L2CAP_ENH_CTRL_SIZE 2
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#define L2CAP_EXT_CTRL_SIZE 4
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struct l2cap_cmd_hdr {
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__u8 code;
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__u8 ident;
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__le16 len;
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} __packed;
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#define L2CAP_CMD_HDR_SIZE 4
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struct l2cap_cmd_rej_unk {
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__le16 reason;
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} __packed;
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struct l2cap_cmd_rej_mtu {
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__le16 reason;
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__le16 max_mtu;
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} __packed;
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struct l2cap_cmd_rej_cid {
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__le16 reason;
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__le16 scid;
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__le16 dcid;
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} __packed;
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struct l2cap_conn_req {
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__le16 psm;
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__le16 scid;
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} __packed;
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struct l2cap_conn_rsp {
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__le16 dcid;
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__le16 scid;
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__le16 result;
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__le16 status;
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} __packed;
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/* protocol/service multiplexer (PSM) */
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#define L2CAP_PSM_SDP 0x0001
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#define L2CAP_PSM_RFCOMM 0x0003
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#define L2CAP_PSM_3DSP 0x0021
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/* channel identifier */
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#define L2CAP_CID_SIGNALING 0x0001
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#define L2CAP_CID_CONN_LESS 0x0002
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#define L2CAP_CID_A2MP 0x0003
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#define L2CAP_CID_ATT 0x0004
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#define L2CAP_CID_LE_SIGNALING 0x0005
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#define L2CAP_CID_SMP 0x0006
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#define L2CAP_CID_DYN_START 0x0040
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#define L2CAP_CID_DYN_END 0xffff
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#define L2CAP_CID_LE_DYN_END 0x007f
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/* connect/create channel results */
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#define L2CAP_CR_SUCCESS 0x0000
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#define L2CAP_CR_PEND 0x0001
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#define L2CAP_CR_BAD_PSM 0x0002
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#define L2CAP_CR_SEC_BLOCK 0x0003
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#define L2CAP_CR_NO_MEM 0x0004
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#define L2CAP_CR_BAD_AMP 0x0005
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#define L2CAP_CR_AUTHENTICATION 0x0005
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#define L2CAP_CR_AUTHORIZATION 0x0006
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#define L2CAP_CR_BAD_KEY_SIZE 0x0007
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#define L2CAP_CR_ENCRYPTION 0x0008
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/* connect/create channel status */
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#define L2CAP_CS_NO_INFO 0x0000
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#define L2CAP_CS_AUTHEN_PEND 0x0001
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#define L2CAP_CS_AUTHOR_PEND 0x0002
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struct l2cap_conf_req {
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__le16 dcid;
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__le16 flags;
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__u8 data[0];
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} __packed;
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struct l2cap_conf_rsp {
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__le16 scid;
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__le16 flags;
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__le16 result;
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__u8 data[0];
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} __packed;
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#define L2CAP_CONF_SUCCESS 0x0000
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#define L2CAP_CONF_UNACCEPT 0x0001
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#define L2CAP_CONF_REJECT 0x0002
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#define L2CAP_CONF_UNKNOWN 0x0003
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#define L2CAP_CONF_PENDING 0x0004
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#define L2CAP_CONF_EFS_REJECT 0x0005
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/* configuration req/rsp continuation flag */
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#define L2CAP_CONF_FLAG_CONTINUATION 0x0001
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struct l2cap_conf_opt {
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__u8 type;
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__u8 len;
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__u8 val[0];
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} __packed;
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#define L2CAP_CONF_OPT_SIZE 2
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#define L2CAP_CONF_HINT 0x80
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#define L2CAP_CONF_MASK 0x7f
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#define L2CAP_CONF_MTU 0x01
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#define L2CAP_CONF_FLUSH_TO 0x02
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#define L2CAP_CONF_QOS 0x03
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#define L2CAP_CONF_RFC 0x04
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#define L2CAP_CONF_FCS 0x05
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#define L2CAP_CONF_EFS 0x06
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#define L2CAP_CONF_EWS 0x07
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#define L2CAP_CONF_MAX_SIZE 22
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struct l2cap_conf_rfc {
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__u8 mode;
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__u8 txwin_size;
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__u8 max_transmit;
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__le16 retrans_timeout;
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__le16 monitor_timeout;
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__le16 max_pdu_size;
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} __packed;
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#define L2CAP_MODE_BASIC 0x00
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#define L2CAP_MODE_RETRANS 0x01
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#define L2CAP_MODE_FLOWCTL 0x02
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#define L2CAP_MODE_ERTM 0x03
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#define L2CAP_MODE_STREAMING 0x04
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/* Unlike the above this one doesn't actually map to anything that would
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* ever be sent over the air. Therefore, use a value that's unlikely to
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* ever be used in the BR/EDR configuration phase.
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*/
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#define L2CAP_MODE_LE_FLOWCTL 0x80
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struct l2cap_conf_efs {
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__u8 id;
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__u8 stype;
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__le16 msdu;
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__le32 sdu_itime;
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__le32 acc_lat;
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__le32 flush_to;
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} __packed;
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#define L2CAP_SERV_NOTRAFIC 0x00
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#define L2CAP_SERV_BESTEFFORT 0x01
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#define L2CAP_SERV_GUARANTEED 0x02
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#define L2CAP_BESTEFFORT_ID 0x01
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struct l2cap_disconn_req {
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__le16 dcid;
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__le16 scid;
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} __packed;
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struct l2cap_disconn_rsp {
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__le16 dcid;
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__le16 scid;
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} __packed;
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struct l2cap_info_req {
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__le16 type;
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} __packed;
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struct l2cap_info_rsp {
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__le16 type;
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__le16 result;
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__u8 data[0];
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} __packed;
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struct l2cap_create_chan_req {
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__le16 psm;
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__le16 scid;
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__u8 amp_id;
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} __packed;
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struct l2cap_create_chan_rsp {
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__le16 dcid;
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__le16 scid;
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__le16 result;
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__le16 status;
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} __packed;
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struct l2cap_move_chan_req {
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__le16 icid;
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__u8 dest_amp_id;
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} __packed;
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struct l2cap_move_chan_rsp {
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__le16 icid;
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__le16 result;
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} __packed;
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#define L2CAP_MR_SUCCESS 0x0000
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#define L2CAP_MR_PEND 0x0001
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#define L2CAP_MR_BAD_ID 0x0002
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#define L2CAP_MR_SAME_ID 0x0003
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#define L2CAP_MR_NOT_SUPP 0x0004
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#define L2CAP_MR_COLLISION 0x0005
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#define L2CAP_MR_NOT_ALLOWED 0x0006
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struct l2cap_move_chan_cfm {
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__le16 icid;
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__le16 result;
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} __packed;
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#define L2CAP_MC_CONFIRMED 0x0000
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#define L2CAP_MC_UNCONFIRMED 0x0001
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struct l2cap_move_chan_cfm_rsp {
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__le16 icid;
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} __packed;
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/* info type */
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#define L2CAP_IT_CL_MTU 0x0001
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#define L2CAP_IT_FEAT_MASK 0x0002
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#define L2CAP_IT_FIXED_CHAN 0x0003
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/* info result */
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#define L2CAP_IR_SUCCESS 0x0000
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#define L2CAP_IR_NOTSUPP 0x0001
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struct l2cap_conn_param_update_req {
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__le16 min;
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__le16 max;
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__le16 latency;
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__le16 to_multiplier;
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} __packed;
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struct l2cap_conn_param_update_rsp {
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__le16 result;
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} __packed;
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/* Connection Parameters result */
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#define L2CAP_CONN_PARAM_ACCEPTED 0x0000
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#define L2CAP_CONN_PARAM_REJECTED 0x0001
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#define L2CAP_LE_MAX_CREDITS 10
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#define L2CAP_LE_DEFAULT_MPS 230
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struct l2cap_le_conn_req {
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__le16 psm;
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__le16 scid;
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__le16 mtu;
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__le16 mps;
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__le16 credits;
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} __packed;
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struct l2cap_le_conn_rsp {
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__le16 dcid;
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__le16 mtu;
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__le16 mps;
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__le16 credits;
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__le16 result;
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} __packed;
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struct l2cap_le_credits {
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__le16 cid;
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__le16 credits;
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} __packed;
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/* ----- L2CAP channels and connections ----- */
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struct l2cap_seq_list {
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__u16 head;
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__u16 tail;
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__u16 mask;
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__u16 *list;
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};
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#define L2CAP_SEQ_LIST_CLEAR 0xFFFF
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#define L2CAP_SEQ_LIST_TAIL 0x8000
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struct l2cap_chan {
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struct l2cap_conn *conn;
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struct hci_conn *hs_hcon;
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struct hci_chan *hs_hchan;
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struct kref kref;
|
|
|
|
__u8 state;
|
|
|
|
bdaddr_t dst;
|
|
__u8 dst_type;
|
|
bdaddr_t src;
|
|
__u8 src_type;
|
|
__le16 psm;
|
|
__le16 sport;
|
|
__u16 dcid;
|
|
__u16 scid;
|
|
|
|
__u16 imtu;
|
|
__u16 omtu;
|
|
__u16 flush_to;
|
|
__u8 mode;
|
|
__u8 chan_type;
|
|
__u8 chan_policy;
|
|
|
|
__u8 sec_level;
|
|
|
|
__u8 ident;
|
|
|
|
__u8 conf_req[64];
|
|
__u8 conf_len;
|
|
__u8 num_conf_req;
|
|
__u8 num_conf_rsp;
|
|
|
|
__u8 fcs;
|
|
|
|
__u16 tx_win;
|
|
__u16 tx_win_max;
|
|
__u16 ack_win;
|
|
__u8 max_tx;
|
|
__u16 retrans_timeout;
|
|
__u16 monitor_timeout;
|
|
__u16 mps;
|
|
|
|
__u16 tx_credits;
|
|
__u16 rx_credits;
|
|
|
|
__u8 tx_state;
|
|
__u8 rx_state;
|
|
|
|
unsigned long conf_state;
|
|
unsigned long conn_state;
|
|
unsigned long flags;
|
|
|
|
__u8 remote_amp_id;
|
|
__u8 local_amp_id;
|
|
__u8 move_id;
|
|
__u8 move_state;
|
|
__u8 move_role;
|
|
|
|
__u16 next_tx_seq;
|
|
__u16 expected_ack_seq;
|
|
__u16 expected_tx_seq;
|
|
__u16 buffer_seq;
|
|
__u16 srej_save_reqseq;
|
|
__u16 last_acked_seq;
|
|
__u16 frames_sent;
|
|
__u16 unacked_frames;
|
|
__u8 retry_count;
|
|
__u16 sdu_len;
|
|
struct sk_buff *sdu;
|
|
struct sk_buff *sdu_last_frag;
|
|
|
|
__u16 remote_tx_win;
|
|
__u8 remote_max_tx;
|
|
__u16 remote_mps;
|
|
|
|
__u8 local_id;
|
|
__u8 local_stype;
|
|
__u16 local_msdu;
|
|
__u32 local_sdu_itime;
|
|
__u32 local_acc_lat;
|
|
__u32 local_flush_to;
|
|
|
|
__u8 remote_id;
|
|
__u8 remote_stype;
|
|
__u16 remote_msdu;
|
|
__u32 remote_sdu_itime;
|
|
__u32 remote_acc_lat;
|
|
__u32 remote_flush_to;
|
|
|
|
struct delayed_work chan_timer;
|
|
struct delayed_work retrans_timer;
|
|
struct delayed_work monitor_timer;
|
|
struct delayed_work ack_timer;
|
|
|
|
struct sk_buff *tx_send_head;
|
|
struct sk_buff_head tx_q;
|
|
struct sk_buff_head srej_q;
|
|
struct l2cap_seq_list srej_list;
|
|
struct l2cap_seq_list retrans_list;
|
|
|
|
struct list_head list;
|
|
struct list_head global_l;
|
|
|
|
void *data;
|
|
struct l2cap_ops *ops;
|
|
struct mutex lock;
|
|
};
|
|
|
|
struct l2cap_ops {
|
|
char *name;
|
|
|
|
struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
|
|
int (*recv) (struct l2cap_chan * chan,
|
|
struct sk_buff *skb);
|
|
void (*teardown) (struct l2cap_chan *chan, int err);
|
|
void (*close) (struct l2cap_chan *chan);
|
|
void (*state_change) (struct l2cap_chan *chan,
|
|
int state, int err);
|
|
void (*ready) (struct l2cap_chan *chan);
|
|
void (*defer) (struct l2cap_chan *chan);
|
|
void (*resume) (struct l2cap_chan *chan);
|
|
void (*suspend) (struct l2cap_chan *chan);
|
|
void (*set_shutdown) (struct l2cap_chan *chan);
|
|
long (*get_sndtimeo) (struct l2cap_chan *chan);
|
|
struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
|
|
unsigned long len, int nb);
|
|
};
|
|
|
|
struct l2cap_conn {
|
|
struct hci_conn *hcon;
|
|
struct hci_chan *hchan;
|
|
|
|
unsigned int mtu;
|
|
|
|
__u32 feat_mask;
|
|
__u8 fixed_chan_mask;
|
|
bool hs_enabled;
|
|
|
|
__u8 info_state;
|
|
__u8 info_ident;
|
|
|
|
struct delayed_work info_timer;
|
|
|
|
spinlock_t lock;
|
|
|
|
struct sk_buff *rx_skb;
|
|
__u32 rx_len;
|
|
__u8 tx_ident;
|
|
|
|
__u8 disc_reason;
|
|
|
|
struct delayed_work security_timer;
|
|
struct smp_chan *smp_chan;
|
|
|
|
struct list_head chan_l;
|
|
struct mutex chan_lock;
|
|
struct kref ref;
|
|
struct list_head users;
|
|
};
|
|
|
|
struct l2cap_user {
|
|
struct list_head list;
|
|
int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
|
|
void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
|
|
};
|
|
|
|
#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
|
|
#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
|
|
#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
|
|
|
|
#define L2CAP_CHAN_RAW 1
|
|
#define L2CAP_CHAN_CONN_LESS 2
|
|
#define L2CAP_CHAN_CONN_ORIENTED 3
|
|
#define L2CAP_CHAN_CONN_FIX_A2MP 4
|
|
|
|
/* ----- L2CAP socket info ----- */
|
|
#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
|
|
|
|
struct l2cap_pinfo {
|
|
struct bt_sock bt;
|
|
struct l2cap_chan *chan;
|
|
struct sk_buff *rx_busy_skb;
|
|
};
|
|
|
|
enum {
|
|
CONF_REQ_SENT,
|
|
CONF_INPUT_DONE,
|
|
CONF_OUTPUT_DONE,
|
|
CONF_MTU_DONE,
|
|
CONF_MODE_DONE,
|
|
CONF_CONNECT_PEND,
|
|
CONF_RECV_NO_FCS,
|
|
CONF_STATE2_DEVICE,
|
|
CONF_EWS_RECV,
|
|
CONF_LOC_CONF_PEND,
|
|
CONF_REM_CONF_PEND,
|
|
CONF_NOT_COMPLETE,
|
|
};
|
|
|
|
#define L2CAP_CONF_MAX_CONF_REQ 2
|
|
#define L2CAP_CONF_MAX_CONF_RSP 2
|
|
|
|
enum {
|
|
CONN_SREJ_SENT,
|
|
CONN_WAIT_F,
|
|
CONN_SREJ_ACT,
|
|
CONN_SEND_PBIT,
|
|
CONN_REMOTE_BUSY,
|
|
CONN_LOCAL_BUSY,
|
|
CONN_REJ_ACT,
|
|
CONN_SEND_FBIT,
|
|
CONN_RNR_SENT,
|
|
};
|
|
|
|
/* Definitions for flags in l2cap_chan */
|
|
enum {
|
|
FLAG_ROLE_SWITCH,
|
|
FLAG_FORCE_ACTIVE,
|
|
FLAG_FORCE_RELIABLE,
|
|
FLAG_FLUSHABLE,
|
|
FLAG_EXT_CTRL,
|
|
FLAG_EFS_ENABLE,
|
|
FLAG_DEFER_SETUP,
|
|
FLAG_LE_CONN_REQ_SENT,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_TX_STATE_XMIT,
|
|
L2CAP_TX_STATE_WAIT_F,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_RX_STATE_RECV,
|
|
L2CAP_RX_STATE_SREJ_SENT,
|
|
L2CAP_RX_STATE_MOVE,
|
|
L2CAP_RX_STATE_WAIT_P,
|
|
L2CAP_RX_STATE_WAIT_F,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_TXSEQ_EXPECTED,
|
|
L2CAP_TXSEQ_EXPECTED_SREJ,
|
|
L2CAP_TXSEQ_UNEXPECTED,
|
|
L2CAP_TXSEQ_UNEXPECTED_SREJ,
|
|
L2CAP_TXSEQ_DUPLICATE,
|
|
L2CAP_TXSEQ_DUPLICATE_SREJ,
|
|
L2CAP_TXSEQ_INVALID,
|
|
L2CAP_TXSEQ_INVALID_IGNORE,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_EV_DATA_REQUEST,
|
|
L2CAP_EV_LOCAL_BUSY_DETECTED,
|
|
L2CAP_EV_LOCAL_BUSY_CLEAR,
|
|
L2CAP_EV_RECV_REQSEQ_AND_FBIT,
|
|
L2CAP_EV_RECV_FBIT,
|
|
L2CAP_EV_RETRANS_TO,
|
|
L2CAP_EV_MONITOR_TO,
|
|
L2CAP_EV_EXPLICIT_POLL,
|
|
L2CAP_EV_RECV_IFRAME,
|
|
L2CAP_EV_RECV_RR,
|
|
L2CAP_EV_RECV_REJ,
|
|
L2CAP_EV_RECV_RNR,
|
|
L2CAP_EV_RECV_SREJ,
|
|
L2CAP_EV_RECV_FRAME,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_MOVE_ROLE_NONE,
|
|
L2CAP_MOVE_ROLE_INITIATOR,
|
|
L2CAP_MOVE_ROLE_RESPONDER,
|
|
};
|
|
|
|
enum {
|
|
L2CAP_MOVE_STABLE,
|
|
L2CAP_MOVE_WAIT_REQ,
|
|
L2CAP_MOVE_WAIT_RSP,
|
|
L2CAP_MOVE_WAIT_RSP_SUCCESS,
|
|
L2CAP_MOVE_WAIT_CONFIRM,
|
|
L2CAP_MOVE_WAIT_CONFIRM_RSP,
|
|
L2CAP_MOVE_WAIT_LOGICAL_COMP,
|
|
L2CAP_MOVE_WAIT_LOGICAL_CFM,
|
|
L2CAP_MOVE_WAIT_LOCAL_BUSY,
|
|
L2CAP_MOVE_WAIT_PREPARE,
|
|
};
|
|
|
|
void l2cap_chan_hold(struct l2cap_chan *c);
|
|
void l2cap_chan_put(struct l2cap_chan *c);
|
|
|
|
static inline void l2cap_chan_lock(struct l2cap_chan *chan)
|
|
{
|
|
mutex_lock(&chan->lock);
|
|
}
|
|
|
|
static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
|
|
{
|
|
mutex_unlock(&chan->lock);
|
|
}
|
|
|
|
static inline void l2cap_set_timer(struct l2cap_chan *chan,
|
|
struct delayed_work *work, long timeout)
|
|
{
|
|
BT_DBG("chan %p state %s timeout %ld", chan,
|
|
state_to_string(chan->state), timeout);
|
|
|
|
/* If delayed work cancelled do not hold(chan)
|
|
since it is already done with previous set_timer */
|
|
if (!cancel_delayed_work(work))
|
|
l2cap_chan_hold(chan);
|
|
|
|
schedule_delayed_work(work, timeout);
|
|
}
|
|
|
|
static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
|
|
struct delayed_work *work)
|
|
{
|
|
bool ret;
|
|
|
|
/* put(chan) if delayed work cancelled otherwise it
|
|
is done in delayed work function */
|
|
ret = cancel_delayed_work(work);
|
|
if (ret)
|
|
l2cap_chan_put(chan);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
|
|
#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
|
|
#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
|
|
#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
|
|
#define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
|
|
msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
|
|
#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
|
|
|
|
static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
|
|
{
|
|
if (seq1 >= seq2)
|
|
return seq1 - seq2;
|
|
else
|
|
return chan->tx_win_max + 1 - seq2 + seq1;
|
|
}
|
|
|
|
static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
|
|
{
|
|
return (seq + 1) % (chan->tx_win_max + 1);
|
|
}
|
|
|
|
static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
|
|
{
|
|
}
|
|
|
|
static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
|
|
{
|
|
}
|
|
|
|
static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
|
|
{
|
|
}
|
|
|
|
static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
|
|
{
|
|
}
|
|
|
|
static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
|
|
{
|
|
}
|
|
|
|
static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern bool disable_ertm;
|
|
extern bool enable_lecoc;
|
|
|
|
int l2cap_init_sockets(void);
|
|
void l2cap_cleanup_sockets(void);
|
|
bool l2cap_is_socket(struct socket *sock);
|
|
|
|
void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
|
|
void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
|
|
|
|
int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
|
|
int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
|
|
|
|
struct l2cap_chan *l2cap_chan_create(void);
|
|
void l2cap_chan_close(struct l2cap_chan *chan, int reason);
|
|
int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
|
|
bdaddr_t *dst, u8 dst_type);
|
|
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
|
|
u32 priority);
|
|
void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
|
|
int l2cap_chan_check_security(struct l2cap_chan *chan);
|
|
void l2cap_chan_set_defaults(struct l2cap_chan *chan);
|
|
int l2cap_ertm_init(struct l2cap_chan *chan);
|
|
void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
|
|
void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
|
|
void l2cap_chan_del(struct l2cap_chan *chan, int err);
|
|
void l2cap_send_conn_req(struct l2cap_chan *chan);
|
|
void l2cap_move_start(struct l2cap_chan *chan);
|
|
void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
|
|
u8 status);
|
|
void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
|
|
|
|
void l2cap_conn_get(struct l2cap_conn *conn);
|
|
void l2cap_conn_put(struct l2cap_conn *conn);
|
|
|
|
int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
|
|
void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
|
|
|
|
#endif /* __L2CAP_H */
|