102 lines
3.6 KiB
C
102 lines
3.6 KiB
C
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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil -*- (for GNU Emacs)
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//
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// Copyright (c) 1985-2000 Microsoft Corporation
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//
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// This file is part of the Microsoft Research IPv6 Network Protocol Stack.
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// You should have received a copy of the Microsoft End-User License Agreement
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// for this software along with this release; see the file "license.txt".
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// If not, please see http://www.research.microsoft.com/msripv6/license.htm,
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// or write to Microsoft Research, One Microsoft Way, Redmond, WA 98052-6399.
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//
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// Abstract:
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//
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// TCP send definitions.
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//
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#define NUM_TCP_HEADERS 32
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#define NUM_TCP_BUFFERS 150
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#define TCP_MAX_HDRS 0xffffffff
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//#define SEND_DEBUG 1
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#ifdef SEND_DEBUG
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#define SEND_TICKS 10
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extern KSPIN_LOCK SendUseLock;
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extern struct TCPSendReq *SendUseList;
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#endif
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//
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// Structure of a TCP send request.
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//
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#define tsr_signature 0x20525354 // 'TSR '
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typedef struct TCPSendReq {
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struct TCPReq tsr_req; // General request structure.
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#if DBG
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ulong tsr_sig;
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#endif
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uint tsr_size; // Size in bytes of data in send.
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long tsr_refcnt; // Reference count for this send.
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uchar tsr_flags; // Flags for this send.
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uchar tsr_pad[3]; // Pad to dword boundary.
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uint tsr_unasize; // Number of bytes unacked.
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uint tsr_offset; // Offset into first buffer in chain
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// of start of unacked data..
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PNDIS_BUFFER tsr_buffer; // Pointer to start of unacked buffer chain.
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PNDIS_BUFFER tsr_lastbuf; // Pointer to last buffer in chain.
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// Valid iff we've sent directly from the
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// buffer chain w/o doing an NdisCopyBuffer.
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uint tsr_time; // TCP time this was received.
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#ifdef SEND_DEBUG
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struct TCPSendReq *tsr_next; // Debug next field.
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uint tsr_timer; // Timer field.
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uint tsr_cmplt; // Who completed it.
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#endif
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} TCPSendReq;
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#define TSR_FLAG_URG 0x01 // Urgent data.
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//
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// Structure defining the context received during a send completes.
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//
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#define scc_signature 0x20434353 // 'SCC '
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typedef struct SendCmpltContext {
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#if DBG
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ulong scc_sig;
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#endif
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TCPSendReq *scc_firstsend; // First send in this context.
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uint scc_count; // Number of sends in count.
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ushort scc_ubufcount; // Number of 'user' buffers in send.
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ushort scc_tbufcount; // Number of transport buffers in send.
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} SendCmpltContext;
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extern KSPIN_LOCK TCPSendReqCompleteLock;
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extern void InitSendState(struct TCB *NewTCB);
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extern void SendSYN(struct TCB *SYNTcb, KIRQL);
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extern void SendKA(struct TCB *KATCB, KIRQL Irql);
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extern void SendRSTFromHeader(struct TCPHeader UNALIGNED *TCP, uint Length,
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IPv6Addr *Dest, uint DestScopeId,
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IPv6Addr *Src, uint SrcScopeId);
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extern void SendACK(struct TCB *ACKTcb);
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extern void SendRSTFromTCB(struct TCB *RSTTcb);
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extern void GoToEstab(struct TCB *EstabTCB);
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extern void FreeSendReq(TCPSendReq *FreedReq);
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extern void FreeTCPHeader(PNDIS_BUFFER FreedBuffer);
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extern int InitTCPSend(void);
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extern void UnloadTCPSend(void);
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extern void TCPSend(struct TCB *SendTCB, KIRQL Irql);
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extern TDI_STATUS TdiSend(PTDI_REQUEST Request, ushort Flags, uint SendLength,
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PNDIS_BUFFER SendBuffer);
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extern uint RcvWin(struct TCB *WinTCB);
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extern void ResetAndFastSend(TCB *SeqTCB, SeqNum NewSeq, uint NewCWin);
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extern void TCPFastSend(TCB *SendTCB, PNDIS_BUFFER in_SendBuf, uint SendOfs,
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TCPSendReq *CurSend, uint SendSize, SeqNum SendNext,
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int in_ToBeSent);
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