d551cc64cd
2. Remove the GetTime() call when receiving Udp4/6 packets. Signed-off-by: Fu Siyuan <siyuan.fu@intel.com> Reviewed-by: Ye, Ting <ting.ye@intel.com> Reviewed-by: Wu, Jiaxin <jiaxin.wu@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15497 6f19259b-4bc3-4df7-8a09-765794883524
782 lines
17 KiB
C
782 lines
17 KiB
C
/** @file
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Tcp function header file.
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Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php<BR>
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _TCP4_FUNC_H_
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#define _TCP4_FUNC_H_
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//
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// Declaration of all the functions in TCP
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// protocol. It is intended to keep tcp.h
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// clear.
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//
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//
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// Functions in tcp.c
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//
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/**
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Try to find one Tcb whose <Ip, Port> equals to <IN Addr, IN Port>.
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@param Addr Pointer to the IP address needs to match.
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@param Port The port number needs to match.
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@return The Tcb which matches the <Addr Port> paire exists or not.
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**/
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BOOLEAN
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TcpFindTcbByPeer (
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IN EFI_IPv4_ADDRESS *Addr,
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IN TCP_PORTNO Port
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);
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/**
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Locate the TCP_CB related to the socket pair.
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@param LocalPort The local port number.
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@param LocalIp The local IP address.
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@param RemotePort The remote port number.
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@param RemoteIp The remote IP address.
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@param Syn Whether to search the listen sockets, if TRUE, the
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listen sockets are searched.
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@return Pointer to the related TCP_CB, if NULL no match is found.
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**/
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TCP_CB *
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TcpLocateTcb (
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IN TCP_PORTNO LocalPort,
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IN UINT32 LocalIp,
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IN TCP_PORTNO RemotePort,
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IN UINT32 RemoteIp,
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IN BOOLEAN Syn
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);
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/**
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Insert a Tcb into the proper queue.
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@param Tcb Pointer to the TCP_CB to be inserted.
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@retval 0 The Tcb is inserted successfully.
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@retval -1 Error condition occurred.
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**/
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INTN
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TcpInsertTcb (
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IN TCP_CB *Tcb
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);
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/**
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Clone a TCP_CB from Tcb.
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@param Tcb Pointer to the TCP_CB to be cloned.
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@return Pointer to the new cloned TCP_CB, if NULL error condition occurred.
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**/
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TCP_CB *
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TcpCloneTcb (
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IN TCP_CB *Tcb
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);
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/**
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Compute an ISS to be used by a new connection.
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@return The result ISS.
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**/
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TCP_SEQNO
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TcpGetIss (
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VOID
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);
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/**
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Initialize the Tcb local related members.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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**/
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VOID
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TcpInitTcbLocal (
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IN OUT TCP_CB *Tcb
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);
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/**
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Initialize the peer related members.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seg Pointer to the segment that contains the peer's
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intial info.
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@param Opt Pointer to the options announced by the peer.
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**/
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VOID
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TcpInitTcbPeer (
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IN OUT TCP_CB *Tcb,
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IN TCP_SEG *Seg,
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IN TCP_OPTION *Opt
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);
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/**
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Get the local mss.
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@param Sock Pointer to the socket to get mss
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@return The mss size.
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**/
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UINT16
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TcpGetRcvMss (
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IN SOCKET *Sock
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);
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/**
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Set the Tcb's state.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param State The state to be set.
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**/
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VOID
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TcpSetState (
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IN OUT TCP_CB *Tcb,
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IN UINT8 State
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);
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//
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// Functions in Tcp4Output.c
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//
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/**
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Send the segment to IP via IpIo function.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Nbuf Pointer to the TCP segment to be sent.
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@param Src Source address of the TCP segment.
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@param Dest Destination address of the TCP segment.
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@retval 0 The segment was sent out successfully.
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@retval -1 The segment was failed to send.
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**/
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INTN
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TcpSendIpPacket (
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IN TCP_CB *Tcb,
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IN NET_BUF *Nbuf,
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IN UINT32 Src,
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IN UINT32 Dest
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);
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/**
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Check whether to send data/SYN/FIN and piggy back an ACK.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Force Whether to ignore the sender's SWS avoidance algorithm and send
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out data by force.
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@return The number of bytes sent.
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**/
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INTN
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TcpToSendData (
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IN OUT TCP_CB *Tcb,
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IN INTN Force
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);
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/**
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Check whether to send an ACK or delayed ACK.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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**/
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VOID
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TcpToSendAck (
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IN OUT TCP_CB *Tcb
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);
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/**
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Send an ACK immediately.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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**/
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VOID
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TcpSendAck (
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IN OUT TCP_CB *Tcb
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);
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/**
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Send a zero probe segment. It can be used by keepalive and zero window probe.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@retval 0 The zero probe segment was sent out successfully.
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@retval other Error condition occurred.
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**/
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INTN
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TcpSendZeroProbe (
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IN OUT TCP_CB *Tcb
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);
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/**
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Process the data and FIN flag, check whether to deliver
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data to the socket layer.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@retval 0 No error occurred to deliver data.
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@retval -1 Error condition occurred. Proper response is to reset the
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connection.
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**/
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INTN
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TcpDeliverData (
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IN OUT TCP_CB *Tcb
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);
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/**
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Send a RESET segment in response to the segment received.
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@param Tcb Pointer to the TCP_CB of this TCP instance, may be NULL.
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@param Head TCP header of the segment that triggers the reset.
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@param Len Length of the segment that triggers the reset.
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@param Local Local IP address.
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@param Remote Remote peer's IP address.
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@retval 0 A reset is sent or no need to send it.
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@retval -1 No reset is sent.
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**/
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INTN
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TcpSendReset (
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IN TCP_CB *Tcb,
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IN TCP_HEAD *Head,
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IN INT32 Len,
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IN UINT32 Local,
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IN UINT32 Remote
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);
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/**
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Compute the sequence space left in the old receive window.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@return The sequence space left in the old receive window.
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**/
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UINT32
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TcpRcvWinOld (
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IN TCP_CB *Tcb
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);
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/**
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Compute the current receive window.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@return The size of the current receive window, in bytes.
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**/
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UINT32
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TcpRcvWinNow (
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IN TCP_CB *Tcb
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);
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/**
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Retransmit the segment from sequence Seq.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seq The sequence number of the segment to be retransmitted.
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@retval 0 Retransmission succeeded.
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@retval -1 Error condition occurred.
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**/
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INTN
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TcpRetransmit (
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IN TCP_CB *Tcb,
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IN TCP_SEQNO Seq
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);
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/**
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Compute how much data to send.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Force Whether to ignore the sender's SWS avoidance algorithm and send
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out data by force.
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@return The length of the data can be sent, if 0, no data can be sent.
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**/
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UINT32
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TcpDataToSend (
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IN TCP_CB *Tcb,
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IN INTN Force
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);
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/**
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Verify that the segment is in good shape.
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@param Nbuf Buffer that contains the segment to be checked.
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@retval 0 The segment is broken.
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@retval 1 The segment is in good shape.
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**/
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INTN
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TcpVerifySegment (
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IN NET_BUF *Nbuf
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);
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/**
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Verify that all the segments in SndQue are in good shape.
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@param Head Pointer to the head node of the SndQue.
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@retval 0 At least one segment is broken.
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@retval 1 All segments in the specific queue are in good shape.
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**/
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INTN
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TcpCheckSndQue (
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IN LIST_ENTRY *Head
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);
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/**
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Get a segment from the Tcb's SndQue.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seq The sequence number of the segment.
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@param Len The maximum length of the segment.
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@return Pointer to the segment, if NULL some error occurred.
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**/
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NET_BUF *
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TcpGetSegmentSndQue (
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IN TCP_CB *Tcb,
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IN TCP_SEQNO Seq,
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IN UINT32 Len
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);
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/**
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Get a segment from the Tcb's socket buffer.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seq The sequence number of the segment.
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@param Len The maximum length of the segment.
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@return Pointer to the segment, if NULL some error occurred.
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**/
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NET_BUF *
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TcpGetSegmentSock (
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IN TCP_CB *Tcb,
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IN TCP_SEQNO Seq,
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IN UINT32 Len
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);
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/**
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Get a segment starting from sequence Seq of a maximum
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length of Len.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seq The sequence number of the segment.
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@param Len The maximum length of the segment.
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@return Pointer to the segment, if NULL some error occurred.
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**/
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NET_BUF *
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TcpGetSegment (
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IN TCP_CB *Tcb,
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IN TCP_SEQNO Seq,
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IN UINT32 Len
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);
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/**
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Get the maximum SndNxt.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@return The sequence number of the maximum SndNxt.
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**/
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TCP_SEQNO
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TcpGetMaxSndNxt (
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IN TCP_CB *Tcb
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);
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//
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// Functions from Tcp4Input.c
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//
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/**
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Process the received ICMP error messages for TCP.
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@param Nbuf Buffer that contains part of the TCP segment without IP header
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truncated from the ICMP error packet.
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@param IcmpErr The ICMP error code interpreted from ICMP error packet.
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@param Src Source address of the ICMP error message.
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@param Dst Destination address of the ICMP error message.
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**/
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VOID
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TcpIcmpInput (
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IN NET_BUF *Nbuf,
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IN UINT8 IcmpErr,
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IN UINT32 Src,
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IN UINT32 Dst
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);
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/**
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Process the received TCP segments.
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@param Nbuf Buffer that contains received TCP segment without IP header.
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@param Src Source address of the segment, or the peer's IP address.
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@param Dst Destination address of the segment, or the local end's IP
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address.
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@retval 0 Segment is processed successfully. It is either accepted or
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discarded. But no connection is reset by the segment.
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@retval -1 A connection is reset by the segment.
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**/
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INTN
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TcpInput (
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IN NET_BUF *Nbuf,
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IN UINT32 Src,
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IN UINT32 Dst
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);
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/**
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Check whether the sequence number of the incoming segment is acceptable.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seg Pointer to the incoming segment.
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@retval 1 The sequence number is acceptable.
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@retval 0 The sequence number is not acceptable.
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**/
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INTN
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TcpSeqAcceptable (
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IN TCP_CB *Tcb,
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IN TCP_SEG *Seg
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);
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/**
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NewReno fast recovery, RFC3782.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seg Segment that triggers the fast recovery.
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**/
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VOID
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TcpFastRecover (
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IN OUT TCP_CB *Tcb,
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IN TCP_SEG *Seg
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);
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/**
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NewReno fast loss recovery, RFC3792.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Seg Segment that triggers the fast loss recovery.
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**/
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VOID
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TcpFastLossRecover (
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IN OUT TCP_CB *Tcb,
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IN TCP_SEG *Seg
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);
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/**
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Compute the RTT as specified in RFC2988.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Measure Currently measured RTT in heart beats.
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**/
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VOID
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TcpComputeRtt (
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IN OUT TCP_CB *Tcb,
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IN UINT32 Measure
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);
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/**
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Trim off the data outside the tcb's receive window.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Nbuf Pointer to the NET_BUF containing the received tcp segment.
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**/
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VOID
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TcpTrimInWnd (
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IN TCP_CB *Tcb,
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IN NET_BUF *Nbuf
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);
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/**
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Store the data into the reassemble queue.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Nbuf Pointer to the buffer containing the data to be queued.
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**/
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VOID
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TcpQueueData (
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IN OUT TCP_CB *Tcb,
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IN NET_BUF *Nbuf
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);
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/**
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Ajust the send queue or the retransmit queue.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Ack The acknowledge seuqence number of the received segment.
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**/
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VOID
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TcpAdjustSndQue (
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IN TCP_CB *Tcb,
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IN TCP_SEQNO Ack
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);
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//
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// Functions from Tcp4Misc.c
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//
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/**
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Compute the TCP segment's checksum.
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@param Nbuf Pointer to the buffer that contains the TCP
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segment.
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@param HeadSum The checksum value of the fixed part of pseudo
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header.
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@return The checksum value.
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**/
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UINT16
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TcpChecksum (
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IN NET_BUF *Nbuf,
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IN UINT16 HeadSum
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);
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/**
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Translate the information from the head of the received TCP
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segment Nbuf contains and fill it into a TCP_SEG structure.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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@param Nbuf Pointer to the buffer contains the TCP segment.
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@return Pointer to the TCP_SEG that contains the translated TCP head information.
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**/
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TCP_SEG *
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TcpFormatNetbuf (
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IN TCP_CB *Tcb,
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IN OUT NET_BUF *Nbuf
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);
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/**
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Initialize an active connection.
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@param Tcb Pointer to the TCP_CB that wants to initiate a
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connection.
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**/
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VOID
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TcpOnAppConnect (
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IN OUT TCP_CB *Tcb
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);
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/**
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Application has consumed some data, check whether
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to send a window updata ack or a delayed ack.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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**/
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VOID
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TcpOnAppConsume (
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IN TCP_CB *Tcb
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);
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/**
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Initiate the connection close procedure, called when
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applications want to close the connection.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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**/
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VOID
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TcpOnAppClose (
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IN OUT TCP_CB *Tcb
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);
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/**
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Check whether the application's newly delivered data can be sent out.
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@param Tcb Pointer to the TCP_CB of this TCP instance.
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|
|
@retval 0 Whether the data is sent out or is buffered for
|
|
further sending.
|
|
@retval -1 The Tcb is not in a state that data is permitted to
|
|
be sent out.
|
|
|
|
**/
|
|
INTN
|
|
TcpOnAppSend (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Abort the connection by sending a reset segment, called
|
|
when the application wants to abort the connection.
|
|
|
|
@param Tcb Pointer to the TCP_CB of the TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpOnAppAbort (
|
|
IN TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Reset the connection related with Tcb.
|
|
|
|
@param Tcb Pointer to the TCP_CB of the connection to be
|
|
reset.
|
|
|
|
**/
|
|
VOID
|
|
TcpResetConnection (
|
|
IN TCP_CB *Tcb
|
|
);
|
|
|
|
//
|
|
// Functions in Tcp4Timer.c
|
|
//
|
|
/**
|
|
Close the TCP connection.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpClose (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Heart beat timer handler, queues the DPC at TPL_CALLBACK.
|
|
|
|
@param Event Timer event signaled, ignored.
|
|
@param Context Context of the timer event, ignored.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
TcpTicking (
|
|
IN EFI_EVENT Event,
|
|
IN VOID *Context
|
|
);
|
|
|
|
/**
|
|
Enable a TCP timer.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
@param Timer The index of the timer to be enabled.
|
|
@param TimeOut The timeout value of this timer.
|
|
|
|
**/
|
|
VOID
|
|
TcpSetTimer (
|
|
IN OUT TCP_CB *Tcb,
|
|
IN UINT16 Timer,
|
|
IN UINT32 TimeOut
|
|
);
|
|
|
|
/**
|
|
Clear one TCP timer.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
@param Timer The index of the timer to be cleared.
|
|
|
|
**/
|
|
VOID
|
|
TcpClearTimer (
|
|
IN OUT TCP_CB *Tcb,
|
|
IN UINT16 Timer
|
|
);
|
|
|
|
/**
|
|
Clear all TCP timers.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpClearAllTimer (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Enable the window prober timer and set the timeout value.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpSetProbeTimer (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Enable the keepalive timer and set the timeout value.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpSetKeepaliveTimer (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Backoff the RTO.
|
|
|
|
@param Tcb Pointer to the TCP_CB of this TCP instance.
|
|
|
|
**/
|
|
VOID
|
|
TcpBackoffRto (
|
|
IN OUT TCP_CB *Tcb
|
|
);
|
|
|
|
/**
|
|
Install the device path protocol on the TCP instance.
|
|
|
|
@param Sock Pointer to the socket representing the TCP instance.
|
|
|
|
@retval EFI_SUCCESS The device path protocol is installed.
|
|
@retval other Failed to install the device path protocol.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
TcpInstallDevicePath (
|
|
IN SOCKET *Sock
|
|
);
|
|
|
|
#endif
|