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