| 1 |
/*
|
| 2 |
* b2ether driver -- derived from DDK packet driver sample
|
| 3 |
*
|
| 4 |
* Basilisk II (C) 1997-1999 Christian Bauer
|
| 5 |
*
|
| 6 |
* Windows platform specific code copyright (C) Lauri Pesonen
|
| 7 |
*
|
| 8 |
* This program is free software; you can redistribute it and/or modify
|
| 9 |
* it under the terms of the GNU General Public License as published by
|
| 10 |
* the Free Software Foundation; either version 2 of the License, or
|
| 11 |
* (at your option) any later version.
|
| 12 |
*
|
| 13 |
* This program is distributed in the hope that it will be useful,
|
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
* GNU General Public License for more details.
|
| 17 |
*
|
| 18 |
* You should have received a copy of the GNU General Public License
|
| 19 |
* along with this program; if not, write to the Free Software
|
| 20 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
| 21 |
*/
|
| 22 |
|
| 23 |
#include "stdarg.h"
|
| 24 |
#include "ntddk.h"
|
| 25 |
#include "ntiologc.h"
|
| 26 |
#include "ndis.h"
|
| 27 |
#include "b2ether.h"
|
| 28 |
|
| 29 |
#undef DBG
|
| 30 |
#define DBG 0
|
| 31 |
#include "debug.h"
|
| 32 |
|
| 33 |
|
| 34 |
NTSTATUS PacketRead(
|
| 35 |
IN PDEVICE_OBJECT DeviceObject,
|
| 36 |
IN PIRP Irp
|
| 37 |
)
|
| 38 |
{
|
| 39 |
POPEN_INSTANCE Open;
|
| 40 |
PIO_STACK_LOCATION IrpSp;
|
| 41 |
PNDIS_PACKET pPacket;
|
| 42 |
PMDL pMdl;
|
| 43 |
NDIS_STATUS Status;
|
| 44 |
|
| 45 |
IF_LOUD(DbgPrint("Packet: Read\n");)
|
| 46 |
|
| 47 |
IrpSp = IoGetCurrentIrpStackLocation(Irp);
|
| 48 |
|
| 49 |
Open = IrpSp->FileObject->FsContext;
|
| 50 |
|
| 51 |
if (IrpSp->Parameters.Read.Length < ETHERNET_HEADER_LENGTH) {
|
| 52 |
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
|
| 53 |
Irp->IoStatus.Information = 0;
|
| 54 |
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
| 55 |
return STATUS_UNSUCCESSFUL;
|
| 56 |
}
|
| 57 |
|
| 58 |
pMdl=IoAllocateMdl(
|
| 59 |
MmGetMdlVirtualAddress(Irp->MdlAddress),
|
| 60 |
MmGetMdlByteCount(Irp->MdlAddress),
|
| 61 |
FALSE,
|
| 62 |
FALSE,
|
| 63 |
NULL
|
| 64 |
);
|
| 65 |
|
| 66 |
if (!pMdl) {
|
| 67 |
IF_LOUD(DbgPrint("Packet: Read-Failed to allocate Mdl\n");)
|
| 68 |
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
|
| 69 |
Irp->IoStatus.Information = 0;
|
| 70 |
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
| 71 |
return STATUS_UNSUCCESSFUL;
|
| 72 |
}
|
| 73 |
|
| 74 |
IoBuildPartialMdl(
|
| 75 |
Irp->MdlAddress,
|
| 76 |
pMdl,
|
| 77 |
((PUCHAR)MmGetMdlVirtualAddress(Irp->MdlAddress))+ETHERNET_HEADER_LENGTH,
|
| 78 |
0
|
| 79 |
);
|
| 80 |
pMdl->Next = NULL;
|
| 81 |
|
| 82 |
//
|
| 83 |
// Try to get a packet from our list of free ones
|
| 84 |
//
|
| 85 |
NdisAllocatePacket( &Status, &pPacket, Open->PacketPool );
|
| 86 |
|
| 87 |
if (Status != NDIS_STATUS_SUCCESS) {
|
| 88 |
IF_LOUD(DbgPrint("Packet: Read- No free packets\n");)
|
| 89 |
IoFreeMdl(pMdl);
|
| 90 |
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
|
| 91 |
Irp->IoStatus.Information = 0;
|
| 92 |
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
| 93 |
return STATUS_UNSUCCESSFUL;
|
| 94 |
}
|
| 95 |
|
| 96 |
//
|
| 97 |
// Get a pointer to the packet itself
|
| 98 |
//
|
| 99 |
RESERVED(pPacket)->Irp = Irp;
|
| 100 |
RESERVED(pPacket)->pMdl = pMdl;
|
| 101 |
|
| 102 |
IoMarkIrpPending(Irp);
|
| 103 |
Irp->IoStatus.Status = STATUS_PENDING;
|
| 104 |
|
| 105 |
//
|
| 106 |
// Attach our new MDL to the packet
|
| 107 |
//
|
| 108 |
NdisChainBufferAtFront(pPacket,pMdl);
|
| 109 |
|
| 110 |
|
| 111 |
//
|
| 112 |
// Put this packet in a list of pending reads.
|
| 113 |
// The receive indication handler will attemp to remove packets
|
| 114 |
// from this list for use in transfer data calls
|
| 115 |
//
|
| 116 |
ExInterlockedInsertTailList(
|
| 117 |
&Open->RcvList,
|
| 118 |
&RESERVED(pPacket)->ListElement,
|
| 119 |
&Open->RcvQSpinLock);
|
| 120 |
|
| 121 |
return(STATUS_PENDING);
|
| 122 |
}
|
| 123 |
|
| 124 |
|
| 125 |
NDIS_STATUS
|
| 126 |
PacketReceiveIndicate (
|
| 127 |
IN NDIS_HANDLE ProtocolBindingContext,
|
| 128 |
IN NDIS_HANDLE MacReceiveContext,
|
| 129 |
IN PVOID HeaderBuffer,
|
| 130 |
IN UINT HeaderBufferSize,
|
| 131 |
IN PVOID LookAheadBuffer,
|
| 132 |
IN UINT LookaheadBufferSize,
|
| 133 |
IN UINT PacketSize
|
| 134 |
)
|
| 135 |
|
| 136 |
{
|
| 137 |
POPEN_INSTANCE Open;
|
| 138 |
PIO_STACK_LOCATION IrpSp;
|
| 139 |
PIRP Irp;
|
| 140 |
PLIST_ENTRY PacketListEntry;
|
| 141 |
PNDIS_PACKET pPacket;
|
| 142 |
ULONG SizeToTransfer;
|
| 143 |
NDIS_STATUS Status;
|
| 144 |
UINT BytesTransfered;
|
| 145 |
ULONG BufferLength;
|
| 146 |
PPACKET_RESERVED Reserved;
|
| 147 |
|
| 148 |
IF_LOUD(DbgPrint("Packet: ReceiveIndicate\n");)
|
| 149 |
|
| 150 |
Open = (POPEN_INSTANCE)ProtocolBindingContext;
|
| 151 |
|
| 152 |
if (HeaderBufferSize > ETHERNET_HEADER_LENGTH) {
|
| 153 |
return NDIS_STATUS_NOT_ACCEPTED; // NDIS_STATUS_SUCCESS;
|
| 154 |
}
|
| 155 |
|
| 156 |
// See if there are any pending read that we can satisfy
|
| 157 |
PacketListEntry=ExInterlockedRemoveHeadList(
|
| 158 |
&Open->RcvList,
|
| 159 |
&Open->RcvQSpinLock
|
| 160 |
);
|
| 161 |
|
| 162 |
if (PacketListEntry == NULL) {
|
| 163 |
IF_LOUD(DbgPrint("Packet: ReceiveIndicate dropped a packet\n");)
|
| 164 |
return NDIS_STATUS_NOT_ACCEPTED;
|
| 165 |
}
|
| 166 |
|
| 167 |
Reserved=CONTAINING_RECORD(PacketListEntry,PACKET_RESERVED,ListElement);
|
| 168 |
pPacket=CONTAINING_RECORD(Reserved,NDIS_PACKET,ProtocolReserved);
|
| 169 |
|
| 170 |
Irp=RESERVED(pPacket)->Irp;
|
| 171 |
IrpSp = IoGetCurrentIrpStackLocation(Irp);
|
| 172 |
|
| 173 |
// This is the length of our partial MDL
|
| 174 |
BufferLength = IrpSp->Parameters.Read.Length-ETHERNET_HEADER_LENGTH;
|
| 175 |
|
| 176 |
SizeToTransfer = (PacketSize < BufferLength) ? PacketSize : BufferLength;
|
| 177 |
|
| 178 |
// copy the ethernet header into the actual readbuffer
|
| 179 |
NdisMoveMappedMemory(
|
| 180 |
MmGetSystemAddressForMdl(Irp->MdlAddress),
|
| 181 |
HeaderBuffer,
|
| 182 |
HeaderBufferSize
|
| 183 |
);
|
| 184 |
|
| 185 |
// Call the Mac to transfer the packet
|
| 186 |
NdisTransferData(
|
| 187 |
&Status,
|
| 188 |
Open->AdapterHandle,
|
| 189 |
MacReceiveContext,
|
| 190 |
0,
|
| 191 |
SizeToTransfer,
|
| 192 |
pPacket,
|
| 193 |
&BytesTransfered);
|
| 194 |
|
| 195 |
if (Status != NDIS_STATUS_PENDING) {
|
| 196 |
PacketTransferDataComplete( Open, pPacket, Status, BytesTransfered );
|
| 197 |
}
|
| 198 |
|
| 199 |
return NDIS_STATUS_SUCCESS;
|
| 200 |
}
|
| 201 |
|
| 202 |
VOID PacketTransferDataComplete (
|
| 203 |
IN NDIS_HANDLE ProtocolBindingContext,
|
| 204 |
IN PNDIS_PACKET pPacket,
|
| 205 |
IN NDIS_STATUS Status,
|
| 206 |
IN UINT BytesTransfered
|
| 207 |
)
|
| 208 |
{
|
| 209 |
PIO_STACK_LOCATION IrpSp;
|
| 210 |
POPEN_INSTANCE Open;
|
| 211 |
PIRP Irp;
|
| 212 |
PMDL pMdl;
|
| 213 |
|
| 214 |
IF_LOUD(DbgPrint("Packet: TransferDataComplete\n");)
|
| 215 |
|
| 216 |
Open = (POPEN_INSTANCE)ProtocolBindingContext;
|
| 217 |
Irp = RESERVED(pPacket)->Irp;
|
| 218 |
IrpSp = IoGetCurrentIrpStackLocation(Irp);
|
| 219 |
pMdl = RESERVED(pPacket)->pMdl;
|
| 220 |
|
| 221 |
// Free the MDL that we allocated
|
| 222 |
IoFreeMdl(pMdl);
|
| 223 |
|
| 224 |
// recycle the packet
|
| 225 |
NdisReinitializePacket(pPacket);
|
| 226 |
|
| 227 |
// Put the packet on the free queue
|
| 228 |
NdisFreePacket(pPacket);
|
| 229 |
|
| 230 |
Irp->IoStatus.Status = Status;
|
| 231 |
Irp->IoStatus.Information = BytesTransfered+ETHERNET_HEADER_LENGTH;
|
| 232 |
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
| 233 |
}
|
| 234 |
|
| 235 |
|
| 236 |
VOID PacketReceiveComplete( IN NDIS_HANDLE ProtocolBindingContext )
|
| 237 |
{
|
| 238 |
}
|
