mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
141 lines
2.7 KiB
141 lines
2.7 KiB
/*++
|
|
|
|
Copyright (c) 1997 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
udp.c
|
|
|
|
Abstract:
|
|
|
|
Boot loader UDP routines.
|
|
|
|
Author:
|
|
|
|
Chuck Lenzmeier (chuckl) December 27, 1996
|
|
|
|
Revision History:
|
|
|
|
Notes:
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
#pragma hdrstop
|
|
|
|
ULONG UdpNextPort = 0;
|
|
|
|
USHORT UdpUnicastDestinationPort;
|
|
|
|
#if 0
|
|
USHORT UdpMulticastDestinationPort;
|
|
ULONG UdpMulticastDestinationAddress;
|
|
USHORT UdpMulticastSourcePort;
|
|
ULONG UdpMulticastSourceAddress;
|
|
#endif
|
|
|
|
|
|
USHORT
|
|
UdpAssignUnicastPort (
|
|
VOID
|
|
)
|
|
{
|
|
if ( UdpNextPort == 0 ) {
|
|
UdpNextPort = (ArcGetRelativeTime() & 0x7fff) | 0x8000;
|
|
} else if ( ++UdpNextPort > 0xffff ) {
|
|
UdpNextPort = 0x8000;
|
|
}
|
|
|
|
UdpUnicastDestinationPort = SWAP_WORD( UdpNextPort );
|
|
|
|
#if 0
|
|
UdpMulticastDestinationPort = 0;
|
|
#endif
|
|
|
|
RomSetReceiveStatus(
|
|
UdpUnicastDestinationPort
|
|
#if 0
|
|
,
|
|
UdpMulticastDestinationPort,
|
|
UdpMulticastDestinationAddress,
|
|
UdpMulticastSourcePort,
|
|
UdpMulticastSourceAddress
|
|
#endif
|
|
);
|
|
|
|
return (USHORT)UdpUnicastDestinationPort;
|
|
|
|
} // UdpAssignUnicastPort
|
|
|
|
|
|
#if 0
|
|
VOID
|
|
UdpSetMulticastPort (
|
|
IN USHORT DestinationPort,
|
|
IN ULONG DestinationAddress,
|
|
IN USHORT SourcePort,
|
|
IN ULONG SourceAddress
|
|
)
|
|
{
|
|
UdpMulticastDestinationPort = DestinationPort;
|
|
UdpMulticastDestinationAddress = DestinationAddress;
|
|
UdpMulticastSourcePort = SourcePort;
|
|
UdpMulticastSourceAddress = SourceAddress;
|
|
|
|
RomSetReceiveStatus(
|
|
UdpUnicastDestinationPort,
|
|
UdpMulticastDestinationPort,
|
|
UdpMulticastDestinationAddress,
|
|
UdpMulticastSourcePort,
|
|
UdpMulticastSourceAddress
|
|
);
|
|
|
|
return;
|
|
|
|
} // UdpSetMulticastPort
|
|
#endif
|
|
|
|
|
|
ULONG
|
|
UdpReceive (
|
|
IN PVOID Buffer,
|
|
IN ULONG BufferLength,
|
|
OUT PULONG RemoteHost,
|
|
OUT PUSHORT RemotePort,
|
|
IN ULONG Timeout
|
|
)
|
|
|
|
//
|
|
// Read in packet from the specified socket. The host and port
|
|
// the packet comes from is filled in fhost and fport.
|
|
// The data is put in buffer buf, which should have size len. If no packet
|
|
// arrives in tmo seconds, then 0 is returned.
|
|
// Otherwise it returns the size of the packet read.
|
|
//
|
|
|
|
{
|
|
return RomReceiveUdpPacket( Buffer, BufferLength, Timeout, RemoteHost, RemotePort );
|
|
|
|
} // UdpReceive
|
|
|
|
|
|
ULONG
|
|
UdpSend (
|
|
IN PVOID Buffer,
|
|
IN ULONG BufferLength,
|
|
IN ULONG RemoteHost,
|
|
IN USHORT RemotePort
|
|
)
|
|
|
|
//
|
|
// writes a packet to the specified socket. The host and port the packet
|
|
// should go to should be in fhost and fport
|
|
// The data should be put in buffer buf, and should have size len.
|
|
// It usually returns the number of characters sent, or -1 on failure.
|
|
//
|
|
|
|
{
|
|
return RomSendUdpPacket( Buffer, BufferLength, RemoteHost, RemotePort );
|
|
|
|
} // UdpSend
|
|
|