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