142 lines
2.7 KiB
C
142 lines
2.7 KiB
C
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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udp.c
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Abstract:
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Boot loader UDP routines.
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Author:
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Chuck Lenzmeier (chuckl) December 27, 1996
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Revision History:
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Notes:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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ULONG UdpNextPort = 0;
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USHORT UdpUnicastDestinationPort;
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#if 0
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USHORT UdpMulticastDestinationPort;
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ULONG UdpMulticastDestinationAddress;
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USHORT UdpMulticastSourcePort;
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ULONG UdpMulticastSourceAddress;
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#endif
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USHORT
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UdpAssignUnicastPort (
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VOID
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)
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{
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if ( UdpNextPort == 0 ) {
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UdpNextPort = (ArcGetRelativeTime() & 0x7fff) | 0x8000;
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} else if ( ++UdpNextPort > 0xffff ) {
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UdpNextPort = 0x8000;
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}
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UdpUnicastDestinationPort = SWAP_WORD( UdpNextPort );
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#if 0
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UdpMulticastDestinationPort = 0;
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#endif
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RomSetReceiveStatus(
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UdpUnicastDestinationPort
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#if 0
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,
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UdpMulticastDestinationPort,
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UdpMulticastDestinationAddress,
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UdpMulticastSourcePort,
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UdpMulticastSourceAddress
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#endif
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);
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return (USHORT)UdpUnicastDestinationPort;
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} // UdpAssignUnicastPort
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#if 0
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VOID
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UdpSetMulticastPort (
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IN USHORT DestinationPort,
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IN ULONG DestinationAddress,
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IN USHORT SourcePort,
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IN ULONG SourceAddress
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)
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{
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UdpMulticastDestinationPort = DestinationPort;
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UdpMulticastDestinationAddress = DestinationAddress;
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UdpMulticastSourcePort = SourcePort;
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UdpMulticastSourceAddress = SourceAddress;
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RomSetReceiveStatus(
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UdpUnicastDestinationPort,
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UdpMulticastDestinationPort,
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UdpMulticastDestinationAddress,
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UdpMulticastSourcePort,
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UdpMulticastSourceAddress
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);
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return;
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} // UdpSetMulticastPort
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#endif
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ULONG
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UdpReceive (
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IN PVOID Buffer,
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IN ULONG BufferLength,
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OUT PULONG RemoteHost,
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OUT PUSHORT RemotePort,
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IN ULONG Timeout
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)
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//
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// Read in packet from the specified socket. The host and port
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// the packet comes from is filled in fhost and fport.
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// The data is put in buffer buf, which should have size len. If no packet
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// arrives in tmo seconds, then 0 is returned.
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// Otherwise it returns the size of the packet read.
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//
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{
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return RomReceiveUdpPacket( Buffer, BufferLength, Timeout, RemoteHost, RemotePort );
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} // UdpReceive
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ULONG
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UdpSend (
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IN PVOID Buffer,
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IN ULONG BufferLength,
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IN ULONG RemoteHost,
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IN USHORT RemotePort
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)
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//
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// writes a packet to the specified socket. The host and port the packet
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// should go to should be in fhost and fport
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// The data should be put in buffer buf, and should have size len.
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// It usually returns the number of characters sent, or -1 on failure.
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//
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{
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return RomSendUdpPacket( Buffer, BufferLength, RemoteHost, RemotePort );
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} // UdpSend
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