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asvitkine |
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/*
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* b2ether driver -- derived from DDK packet driver sample
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*
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* Basilisk II (C) 1997-1999 Christian Bauer
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*
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* Windows platform specific code copyright (C) Lauri Pesonen
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "stdarg.h"
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#include "ntddk.h"
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#include "ntiologc.h"
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#include "ndis.h"
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#include "b2ether.h"
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#undef DBG
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#define DBG 0
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#include "debug.h"
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NTSTATUS PacketWrite(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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{
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POPEN_INSTANCE Open;
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PIO_STACK_LOCATION IrpSp;
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PNDIS_PACKET pPacket;
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NDIS_STATUS Status;
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IF_LOUD(DbgPrint("Packet: SendAdapter\n");)
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IrpSp = IoGetCurrentIrpStackLocation(Irp);
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Open = IrpSp->FileObject->FsContext;
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// Try to get a packet from our list of free ones
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NdisAllocatePacket( &Status, &pPacket, Open->PacketPool );
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if (Status != NDIS_STATUS_SUCCESS) {
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Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_UNSUCCESSFUL;
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}
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RESERVED(pPacket)->Irp=Irp;
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// Attach the writes buffer to the packet
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NdisChainBufferAtFront(pPacket,Irp->MdlAddress);
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IoMarkIrpPending(Irp);
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Irp->IoStatus.Status = STATUS_PENDING;
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// Call the MAC
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NdisSend( &Status, Open->AdapterHandle, pPacket );
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if (Status != NDIS_STATUS_PENDING) {
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PacketSendComplete( Open, pPacket, Status );
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}
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return(STATUS_PENDING);
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}
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VOID PacketSendComplete(
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IN NDIS_HANDLE ProtocolBindingContext,
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IN PNDIS_PACKET pPacket,
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IN NDIS_STATUS Status
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)
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{
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PIRP Irp;
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IF_LOUD(DbgPrint("Packet: SendComplete\n");)
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Irp = RESERVED(pPacket)->Irp;
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// recyle the packet
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NdisReinitializePacket(pPacket);
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// Put the packet back on the free list
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NdisFreePacket(pPacket);
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Irp->IoStatus.Status = Status;
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// a known bug, but I don't need this information
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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