mirror of https://github.com/acidanthera/audk.git
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/** @file
|
|
|
|
Copyright (c) 2005 - 2006, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
Module Name:
|
|
|
|
Tcp4Option.h
|
|
|
|
Abstract:
|
|
|
|
|
|
**/
|
|
|
|
#ifndef _TCP4_OPTION_H_
|
|
#define _TCP4_OPTION_H_
|
|
|
|
//
|
|
// The structure to store the parse option value.
|
|
// ParseOption only parse the options, don't process them.
|
|
//
|
|
typedef struct s_TCP_OPTION {
|
|
UINT8 Flag; // flag such as TCP_OPTION_RCVD_MSS
|
|
UINT8 WndScale; // the WndScale received
|
|
UINT16 Mss; // the Mss received
|
|
UINT32 TSVal; // the TSVal field in a timestamp option
|
|
UINT32 TSEcr; // the TSEcr field in a timestamp option
|
|
} TCP_OPTION;
|
|
|
|
enum {
|
|
|
|
//
|
|
// supported TCP option type and their length
|
|
//
|
|
TCP_OPTION_EOP = 0, // End Of oPtion
|
|
TCP_OPTION_NOP = 1, // No-Option.
|
|
TCP_OPTION_MSS = 2, // Maximum Segment Size
|
|
TCP_OPTION_WS = 3, // Window scale
|
|
TCP_OPTION_TS = 8, // Timestamp
|
|
TCP_OPTION_MSS_LEN = 4, // length of MSS option
|
|
TCP_OPTION_WS_LEN = 3, // length of window scale option
|
|
TCP_OPTION_TS_LEN = 10, // length of timestamp option
|
|
TCP_OPTION_WS_ALIGNED_LEN = 4, // length of window scale option, aligned
|
|
TCP_OPTION_TS_ALIGNED_LEN = 12, // length of timestamp option, aligned
|
|
|
|
//
|
|
// recommend format of timestamp window scale
|
|
// option for fast process.
|
|
//
|
|
TCP_OPTION_TS_FAST = ((TCP_OPTION_NOP << 24) |
|
|
(TCP_OPTION_NOP << 16) |
|
|
(TCP_OPTION_TS << 8) |
|
|
TCP_OPTION_TS_LEN),
|
|
|
|
TCP_OPTION_WS_FAST = ((TCP_OPTION_NOP << 24) |
|
|
(TCP_OPTION_WS << 16) |
|
|
(TCP_OPTION_WS_LEN << 8)),
|
|
|
|
TCP_OPTION_MSS_FAST = ((TCP_OPTION_MSS << 24) |
|
|
(TCP_OPTION_MSS_LEN << 16)),
|
|
|
|
//
|
|
// Other misc definations
|
|
//
|
|
TCP_OPTION_MAX_WS = 14, // Maxium window scale value
|
|
TCP_OPTION_MAX_WIN = 0xffff, // max window size in TCP header
|
|
TCP_OPTION_RCVD_MSS = 0x01,
|
|
TCP_OPTION_RCVD_WS = 0x02,
|
|
TCP_OPTION_RCVD_TS = 0x04
|
|
};
|
|
|
|
UINT8
|
|
TcpComputeScale (
|
|
IN TCP_CB *Tcb
|
|
);
|
|
|
|
UINT16
|
|
TcpSynBuildOption (
|
|
IN TCP_CB *Tcb,
|
|
IN NET_BUF *Buf
|
|
);
|
|
|
|
UINT16
|
|
TcpBuildOption (
|
|
IN TCP_CB *Tcb,
|
|
IN NET_BUF *Buf
|
|
);
|
|
|
|
INTN
|
|
TcpParseOption (
|
|
IN TCP_HEAD *Tcp,
|
|
IN TCP_OPTION *Option
|
|
);
|
|
|
|
UINT32
|
|
TcpPawsOK (
|
|
IN TCP_CB *Tcb,
|
|
IN UINT32 TSVal
|
|
);
|
|
|
|
#endif
|