routines.c File Reference

#include "precomp.h"

Include dependency graph for routines.c:

Go to the source code of this file.

Functions
NDIS_STATUS	InitNdisPools ()
VOID	CloseNdisPools ()
__inline INT	SkipToOffset (PNDIS_BUFFER Buffer, UINT Offset, PCHAR *Data, PUINT Size)
void	GetDataPtr (PNDIS_PACKET Packet, UINT Offset, PCHAR *DataOut, PUINT Size)
NDIS_STATUS	AllocatePacketWithBufferX (PNDIS_PACKET *NdisPacket, PCHAR Data, UINT Len, PCHAR File, UINT Line)
VOID	FreeNdisPacketX (PNDIS_PACKET Packet, PCHAR File, UINT Line)

Variables
NDIS_HANDLE	GlobalPacketPool = NULL
NDIS_HANDLE	GlobalBufferPool = NULL

Function Documentation

AllocatePacketWithBufferX()

NDIS_STATUS AllocatePacketWithBufferX	(	PNDIS_PACKET *	NdisPacket,
		PCHAR	Data,
		UINT	Len,
		PCHAR	File,
		UINT	Line
	)

Definition at line 82 of file routines.c.

                                               {
    PNDIS_PACKET Packet;
    PNDIS_BUFFER Buffer;
    NDIS_STATUS Status;
    PCHAR NewData;
 
    NewData = exAllocatePool( NonPagedPool, Len );
    if( !NewData ) return NDIS_STATUS_NOT_ACCEPTED; // XXX
 
    if( Data )
    RtlCopyMemory(NewData, Data, Len);
 
    NdisAllocatePacket( &Status, &Packet, GlobalPacketPool );
    if( Status != NDIS_STATUS_SUCCESS ) {
    exFreePool( NewData );
    return Status;
    }
    TrackWithTag(NDIS_PACKET_TAG, Packet, File, Line);
 
    NdisAllocateBuffer( &Status, &Buffer, GlobalBufferPool, NewData, Len );
    if( Status != NDIS_STATUS_SUCCESS ) {
    exFreePool( NewData );
    FreeNdisPacket( Packet );
    }
    TrackWithTag(NDIS_BUFFER_TAG, Buffer, File, Line);
 
    NdisChainBufferAtFront( Packet, Buffer );
    *NdisPacket = Packet;
 
    return NDIS_STATUS_SUCCESS;
}

CloseNdisPools()

VOID CloseNdisPools

(

)

Definition at line 19 of file routines.c.

                      {
    if( GlobalPacketPool ) NdisFreePacketPool( GlobalPacketPool );
    if( GlobalBufferPool ) NdisFreeBufferPool( GlobalBufferPool );
}

Referenced by LanUnload().

FreeNdisPacketX()

VOID FreeNdisPacketX	(	PNDIS_PACKET	Packet,
		PCHAR	File,
		UINT	Line
	)

Definition at line 117 of file routines.c.

{
    PNDIS_BUFFER Buffer, NextBuffer;
 
    LA_DbgPrint(DEBUG_PBUFFER, ("Packet (0x%X)\n", Packet));
 
    /* Free all the buffers in the packet first */
    NdisQueryPacket(Packet, NULL, NULL, &Buffer, NULL);
    for (; Buffer != NULL; Buffer = NextBuffer) {
        PVOID Data;
        UINT Length;
 
        NdisGetNextBuffer(Buffer, &NextBuffer);
        NdisQueryBuffer(Buffer, &Data, &Length);
        NdisFreeBuffer(Buffer);
    UntrackFL(File,Line,Buffer);
        exFreePool(Data);
    }
 
    /* Finally free the NDIS packet descriptor */
    NdisFreePacket(Packet);
    UntrackFL(File,Line,Packet);
}

GetDataPtr()

void GetDataPtr	(	PNDIS_PACKET	Packet,
		UINT	Offset,
		PCHAR *	DataOut,
		PUINT	Size
	)

Definition at line 65 of file routines.c.

                      {
    PNDIS_BUFFER Buffer;
 
    NdisQueryPacket(Packet, NULL, NULL, &Buffer, NULL);
    if( !Buffer ) return;
    SkipToOffset( Buffer, Offset, DataOut, Size );
}

InitNdisPools()

NDIS_STATUS InitNdisPools

(

)

Definition at line 6 of file routines.c.

                            {
    NDIS_STATUS NdisStatus;
    /* Last argument is extra space size */
    NdisAllocatePacketPool( &NdisStatus, &GlobalPacketPool, 100, 0 );
    if( !NT_SUCCESS(NdisStatus) ) return NdisStatus;
 
    NdisAllocateBufferPool( &NdisStatus, &GlobalBufferPool, 100 );
    if( !NT_SUCCESS(NdisStatus) )
    NdisFreePacketPool(GlobalPacketPool);
 
    return NdisStatus;
}

Referenced by DriverEntry().

SkipToOffset()

__inline INT SkipToOffset	(	PNDIS_BUFFER	Buffer,
		UINT	Offset,
		PCHAR *	Data,
		PUINT	Size
	)

Definition at line 24 of file routines.c.

{
    for (;;) {
 
        if (!Buffer)
            return -1;
 
        NdisQueryBuffer(Buffer, (PVOID)Data, Size);
 
        if (Offset < *Size) {
            *Data = (PCHAR)((ULONG_PTR) *Data + Offset);
            *Size              -= Offset;
            break;
        }
 
        Offset -= *Size;
 
        NdisGetNextBuffer(Buffer, &Buffer);
    }
 
    return Offset;
}

Referenced by GetDataPtr().

Variable Documentation

GlobalBufferPool

NDIS_HANDLE GlobalBufferPool = NULL

Definition at line 4 of file routines.c.

Referenced by AllocatePacketWithBuffer(), AllocatePacketWithBufferX(), CloseNdisPools(), InitNdisPools(), and PrependPacket().

GlobalPacketPool

NDIS_HANDLE GlobalPacketPool = NULL

Definition at line 3 of file routines.c.

Referenced by AllocatePacketWithBuffer(), AllocatePacketWithBufferX(), CloseNdisPools(), and InitNdisPools().