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/********************************************************************//** Microsoft LAN Manager **//** Copyright(c) Microsoft Corp., 1990-2000 **//********************************************************************//* :ts=4 */
//** DGRAM.H - Common datagram protocol definitions.
//
// This file contains definitions for the functions common to
// both UDP and Raw IP.
//
#ifndef _DGRAM_INCLUDED_
#define _DGRAM_INCLUDED_ 1
//* Structure used for maintaining DG send requests.
#define dsr_signature 0x20525338
typedef struct DGSendReq {#if DBG
ulong dsr_sig;#endif
Queue dsr_q; // Queue linkage when pending.
PNDIS_BUFFER dsr_buffer; // Buffer of data to send.
PNDIS_BUFFER dsr_header; // Pointer to header buffer.
CTEReqCmpltRtn dsr_rtn; // Completion routine.
PVOID dsr_context; // User context.
IPAddr dsr_addr; // Remote IPAddr.
IPAddr dsr_srcaddr; // Local IPAddr.
ulong dsr_pid; ushort dsr_port; // Remote port.
ushort dsr_size; // Size of buffer.
ushort dsr_srcport; // Local Port.
} DGSendReq;
//* Structure used for maintaining DG receive requests.
#define drr_signature 0x20525238
typedef struct DGRcvReq {#if DBG
ulong drr_sig;#endif
Queue drr_q; // Queue linkage on AddrObj.
PNDIS_BUFFER drr_buffer; // Buffer to be filled in.
PTDI_CONNECTION_INFORMATION drr_conninfo; // Pointer to conn. info.
CTEReqCmpltRtn drr_rtn; // Completion routine.
PVOID drr_context; // User context.
IPAddr drr_addr; // Remote IPAddr acceptable.
ushort drr_port; // Remote port acceptable.
ushort drr_size; // Size of buffer.
} DGRcvReq;
//* External definition of exported variables.
extern CACHE_LINE_KSPIN_LOCK DGQueueLock;extern CTEEvent DGDelayedEvent;
//* External definition of exported functions.
extern void DGSendComplete(void *Context, PNDIS_BUFFER BufferChain, IP_STATUS SendStatus);
extern TDI_STATUS TdiSendDatagram(PTDI_REQUEST Request, PTDI_CONNECTION_INFORMATION ConnInfo, uint DataSize, uint *BytesSent, PNDIS_BUFFER Buffer);
extern TDI_STATUS TdiReceiveDatagram(PTDI_REQUEST Request, PTDI_CONNECTION_INFORMATION ConnInfo, PTDI_CONNECTION_INFORMATION ReturnInfo, uint RcvSize, uint *BytesRcvd, PNDIS_BUFFER Buffer);
extern VOID TdiCancelSendDatagram(AddrObj * SrcAO, PVOID Context, KIRQL inHandle);
extern VOID TdiCancelReceiveDatagram(AddrObj * SrcAO, PVOID Context, KIRQL inHandle);
extern IP_STATUS DGRcv(void *IPContext, IPAddr Dest, IPAddr Src, IPAddr LocalAddr, IPRcvBuf *RcvBuf, uint Size, uchar IsBCast, uchar Protocol, IPOptInfo *OptInfo);
extern void FreeDGRcvReq(DGRcvReq *RcvReq);extern void FreeDGSendReq(DGSendReq *SendReq);extern int InitDG(uint MaxHeaderSize);extern PNDIS_BUFFER GetDGHeader(struct UDPHeader **Header);extern void FreeDGHeader(PNDIS_BUFFER FreedBuffer);extern void PutPendingQ(AddrObj *QueueingAO);
//* The following is needed for the IP_PKTINFO option and echos what is found
// in ws2tcpip.h and winsock.h
#define IP_PKTINFO 19 // receive packet information
typedef struct in_pktinfo { IPAddr ipi_addr; // destination IPv4 address
uint ipi_ifindex; // received interface index
} IN_PKTINFO;
//* Make sure the size of IN_PKTINFO is still what we think it is.
// If it is changed, the corresponding definition in ws2tcpip.h must be
// changed as well.
C_ASSERT(sizeof(IN_PKTINFO) == 8);
#define IPPROTO_IP 0
//* Function to allocate and populate an IN_PKTINFO ancillary object.
PTDI_CMSGHDRDGFillIpPktInfo(IPAddr DestAddr, IPAddr LocalAddr, int *Size);
//* Structure sent to XxxDeliver function.
typedef struct DGDeliverInfo { IPAddr DestAddr; // Destination address in IP Header.
IPAddr LocalAddr; // Address of interface packet was delivered on.
#if TRACE_EVENT
ushort DestPort;#endif
uint Flags; // Flags describing aspects of this delivery.
} DGDeliverInfo;
//* Values for Flags member of DGDeliverInfo.
#define NEED_CHECKSUM 0x1
#define IS_BCAST 0x2
#define SRC_LOCAL 0x4
#endif // ifndef _DGRAM_INCLUDED_
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