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windows-server-2003/net/rras/ndis/ndiswan/memory.c

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/*++
Copyright (c) 1990-1995 Microsoft Corporation
Module Name:
Ndiswan.c
Abstract:
This is the initialization file for the NdisWan driver. This driver
is a shim between the protocols, where it conforms to the NDIS 3.1
Miniport interface spec, and the WAN Miniport drivers, where it exports
the WAN Extensions for Miniports (it looks like a protocol to the WAN
Miniport drivers).
Author:
Tony Bell (TonyBe) June 06, 1995
Environment:
Kernel Mode
Revision History:
TonyBe 06/06/95 Created
--*/
#include "wan.h"
#define __FILE_SIG__ MEMORY_FILESIG
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, NdisWanCreateProtocolInfoTable)
#endif
EXPORT
VOID
NdisTapiDeregisterProvider(
IN NDIS_HANDLE
);
//
// Local function prototypes
//
PVOID
AllocateWanPacket(
IN POOL_TYPE PoolType,
IN SIZE_T NumberOfBytes,
IN ULONG Tag
);
VOID
FreeWanPacket(
PVOID WanPacket
);
//
// End local function prototypes
//
PMINIPORTCB
NdisWanAllocateMiniportCB(
IN PNDIS_STRING AdapterName
)
/*++
Routine Name:
NdisWanAllocateMiniportCB
Routine Description:
This routine creates and initializes an MiniportCB
Arguments:
Return Values:
--*/
{
PMINIPORTCB LocalMiniportCB;
ULONG ulAllocationSize, i;
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanCreateMiniportCB: Enter"));
//
// Allocate and zero out the memory block
//
NdisWanAllocateMemory(&LocalMiniportCB, MINIPORTCB_SIZE, MINIPORTCB_TAG);
if (LocalMiniportCB == NULL) {
return (NULL);
}
NdisZeroMemory(LocalMiniportCB, MINIPORTCB_SIZE);
//
// setup the new control block
//
NdisAllocateSpinLock(&LocalMiniportCB->Lock);
#ifdef MINIPORT_NAME
NdisWanAllocateAdapterName(&LocalMiniportCB->AdapterName, AdapterName);
#endif
#if DBG
InitializeListHead(&LocalMiniportCB->SendPacketList);
InitializeListHead(&LocalMiniportCB->RecvPacketList);
#endif
InitializeListHead(&LocalMiniportCB->ProtocolCBList);
InitializeListHead(&LocalMiniportCB->AfSapCBList);
NdisWanInitializeSyncEvent(&LocalMiniportCB->HaltEvent);
NdisWanClearSyncEvent(&LocalMiniportCB->HaltEvent);
//
// Add to global list
//
InsertTailGlobalList(MiniportCBList, &(LocalMiniportCB->Linkage));
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("%ls MiniportCB: 0x%x, Number: %d",
LocalMiniportCB->AdapterName.Buffer, LocalMiniportCB, MiniportCBList.ulCount));
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanCreateMiniportCB: Exit"));
return (LocalMiniportCB);
}
VOID
NdisWanFreeMiniportCB(
IN PMINIPORTCB pMiniportCB
)
/*++
Routine Name:
NdisWanFreeMiniportCB
Routine Description:
This frees a MiniportCB
Arguments:
pMiniportCB - Pointer to to the MiniportCB that is being destroyed
Return Values:
None
--*/
{
PMINIPORTCB mcb;
BOOLEAN Found = FALSE;
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanFreeMiniportCB: Enter"));
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("MiniportCB: 0x%x", pMiniportCB));
#ifdef MINIPORT_NAME
NdisWanFreeNdisString(&pMiniportCB->AdapterName);
#endif
NdisFreeSpinLock(&pMiniportCB->Lock);
NdisAcquireSpinLock(&MiniportCBList.Lock);
RemoveEntryList(&pMiniportCB->Linkage);
MiniportCBList.ulCount--;
//
// Walk the miniportcb list and see if this is the only
// instance of this protocol. If it is we need to notify
// user-mode that a protocol has been removed.
//
mcb = (PMINIPORTCB)MiniportCBList.List.Flink;
while ((PVOID)mcb != (PVOID)&MiniportCBList.List) {
if (mcb->ProtocolType == pMiniportCB->ProtocolType) {
Found = TRUE;
break;
}
mcb = (PMINIPORTCB)mcb->Linkage.Flink;
}
NdisReleaseSpinLock(&MiniportCBList.Lock);
if (Found == FALSE) {
PROTOCOL_INFO pinfo;
NdisZeroMemory(&pinfo, sizeof(pinfo));
pinfo.ProtocolType = pMiniportCB->ProtocolType;
pinfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&pinfo);
}
NdisWanFreeMemory(pMiniportCB);
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanFreeMiniportCB: Exit"));
}
POPENCB
NdisWanAllocateOpenCB(
IN PUNICODE_STRING BindName
)
/*++
Routine Name:
NdisWanAllocateOpenCB
Routine Description:
This routine creates and initializes a OpenCB
Arguments:
BindName - Pointer to an NDIS_STRING that has the name of the WAN Miniport
that will be used in the NdisOpenAdapter call when we bind to
the WAN Miniport.
Return Values:
--*/
{
POPENCB pOpenCB;
ULONG ulAllocationSize;
USHORT i;
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanCreateOpenCB: Enter"));
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("BindName: %ls", BindName));
//
// Allocate memory for OpenCB
//
NdisWanAllocateMemory(&pOpenCB, OPENCB_SIZE, OPENCB_TAG);
if (pOpenCB == NULL) {
return (NULL);
}
NdisZeroMemory(pOpenCB, OPENCB_SIZE);
NdisWanInitializeNotificationEvent(&pOpenCB->InitEvent);
//
// Parse out the GUID for this miniport
//
//
// Setup new control block
//
NdisWanAllocateMemory(&pOpenCB->MiniportName.Buffer, BindName->MaximumLength, NDISSTRING_TAG);
pOpenCB->MiniportName.MaximumLength = BindName->MaximumLength;
pOpenCB->MiniportName.Length = BindName->Length;
RtlCopyUnicodeString(&pOpenCB->MiniportName, BindName);
//
// Go to the end of the string and work back until we find
// the first "{". Now start parsing the string converting
// and copying from WCHAR to CHAR all digits until we hit
// the closing "}".
//
for (i = pOpenCB->MiniportName.Length/sizeof(WCHAR); i > 0; i--) {
if (pOpenCB->MiniportName.Buffer[i-1] == (WCHAR)L'{') {
break;
}
}
if (i != 0) {
NDIS_STRING Src;
Src.Length =
BindName->Length - ((i-1)*sizeof(WCHAR));
Src.MaximumLength =
BindName->Length - ((i-1)*sizeof(WCHAR));
Src.Buffer = &BindName->Buffer[i-1];
RtlGUIDFromString(&Src, &pOpenCB->Guid);
}
NdisAllocateSpinLock(&pOpenCB->Lock);
InitializeListHead(&pOpenCB->AfSapCBList);
InitializeListHead(&pOpenCB->AfSapCBClosing);
InitializeListHead(&pOpenCB->WanRequestList);
#if DBG
InitializeListHead(&pOpenCB->SendPacketList);
#endif
//
// Put OpenCB on global list
//
InsertTailGlobalList(OpenCBList, &(pOpenCB->Linkage));
pOpenCB->RefCount = 1;
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("WanMiniport %ls OpenCB: 0x%x",
pOpenCB->MiniportName.Buffer, pOpenCB));
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanCreateOpenCB: Exit"));
return(pOpenCB);
}
VOID
NdisWanFreeOpenCB(
IN POPENCB pOpenCB
)
/*++
Routine Name:
NdisWanFreeOpenCB
Routine Description:
This routine frees a OpenCB
Arguments:
pOpenCB - Pointer to the OpenCB that is being destroyed
Return Values:
None
--*/
{
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanFreeOpenCB: Enter - OpenCB: 0x%p", pOpenCB));
if (pOpenCB->Flags & OPEN_LEGACY &&
pOpenCB->Flags & SEND_RESOURCES) {
NdisWanFreeSendResources(pOpenCB);
}
//
// Remove from OpenCB global list
//
RemoveEntryGlobalList(OpenCBList, &(pOpenCB->Linkage));
//
// Free the memory allocated for the NDIS_STRING
//
NdisWanFreeNdisString(&pOpenCB->MiniportName);
//
// Free the memory allocated for the control block
//
NdisWanFreeMemory(pOpenCB);
NdisWanDbgOut(DBG_TRACE, DBG_MEMORY, ("NdisWanFreeOpenCB: Exit"));
}
PPROTOCOLCB
NdisWanAllocateProtocolCB(
IN PNDISWAN_ROUTE Route
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
PPROTOCOLCB LocalProtocolCB;
PUCHAR AllocatedMemory;
PROTOCOL_INFO ProtocolInfo = {0};
LocalProtocolCB =
NdisAllocateFromNPagedLookasideList(&LinkProtoCBList);
if (LocalProtocolCB == NULL) {
return(NULL);
}
NdisZeroMemory(LocalProtocolCB, PROTOCOLCB_SIZE);
LocalProtocolCB->Signature = PROTOCB_SIG;
if (Route->ulBufferLength > 0) {
NdisWanAllocateMemory(&AllocatedMemory,
Route->ulBufferLength,
PROTOCOLCB_TAG);
if (AllocatedMemory == NULL) {
NdisFreeToNPagedLookasideList(&LinkProtoCBList, LocalProtocolCB);
return (NULL);
}
LocalProtocolCB->LineUpInfo = AllocatedMemory;
}
//
// Copy the bindingname
//
if (Route->usBindingNameLength != 0) {
USHORT usBindingNameLength;
WCHAR BindingName[MAX_NAME_LENGTH+1] = {0};
usBindingNameLength = Route->usBindingNameLength;
//
// We will limit the binding name string to 256 wchars
//
if (usBindingNameLength > (MAX_NAME_LENGTH * sizeof(WCHAR))) {
usBindingNameLength = MAX_NAME_LENGTH * sizeof(WCHAR);
}
NdisMoveMemory((PUCHAR)BindingName,
(PUCHAR)Route->BindingName,
usBindingNameLength);
BindingName[usBindingNameLength/sizeof(WCHAR)] = L'\0';
NdisWanStringToNdisString(&LocalProtocolCB->BindingName, BindingName);
}
if (Route->usDeviceNameLength != 0) {
USHORT usDeviceNameLength;
usDeviceNameLength = Route->usDeviceNameLength;
//
// We will limit the binding name string to 256 wchars
//
if (usDeviceNameLength > (MAX_NAME_LENGTH * sizeof(WCHAR))) {
usDeviceNameLength = (MAX_NAME_LENGTH * sizeof(WCHAR));
}
NdisWanAllocateMemory(&(LocalProtocolCB->InDeviceName.Buffer),
usDeviceNameLength,
NDISSTRING_TAG);
if (LocalProtocolCB->InDeviceName.Buffer != NULL) {
LocalProtocolCB->InDeviceName.MaximumLength = usDeviceNameLength;
LocalProtocolCB->InDeviceName.Length = usDeviceNameLength;
NdisMoveMemory((PUCHAR)LocalProtocolCB->InDeviceName.Buffer,
(PUCHAR)Route->DeviceName,
usDeviceNameLength);
}
}
//
// Copy over the protocol info
//
LocalProtocolCB->ulLineUpInfoLength = Route->ulBufferLength;
if (Route->ulBufferLength != 0) {
NdisMoveMemory(LocalProtocolCB->LineUpInfo,
Route->Buffer,
Route->ulBufferLength);
}
//
// Setup the protocol type
//
LocalProtocolCB->ProtocolType = Route->usProtocolType;
//
// Get the PPP protocol value for this protocol type
//
ProtocolInfo.ProtocolType = Route->usProtocolType;
if (GetProtocolInfo(&ProtocolInfo) != TRUE) {
if (LocalProtocolCB->BindingName.Length != 0) {
NdisWanFreeNdisString(&LocalProtocolCB->BindingName);
}
if (LocalProtocolCB->LineUpInfo != NULL) {
NdisWanFreeMemory(LocalProtocolCB->LineUpInfo);
}
if (LocalProtocolCB->InDeviceName.Length != 0) {
NdisWanFreeMemory(LocalProtocolCB->InDeviceName.Buffer);
}
NdisFreeToNPagedLookasideList(&LinkProtoCBList, LocalProtocolCB);
return (NULL);
}
InitializeListHead(&LocalProtocolCB->VcList);
NdisWanInitializeSyncEvent(&LocalProtocolCB->UnrouteEvent);
LocalProtocolCB->PPPProtocolID = ProtocolInfo.PPPId;
LocalProtocolCB->MTU = ProtocolInfo.MTU;
LocalProtocolCB->TunnelMTU = ProtocolInfo.TunnelMTU;
LocalProtocolCB->State = PROTOCOL_ROUTING;
LocalProtocolCB->RefCount = 1;
switch (Route->usProtocolType) {
case PROTOCOL_IP:
LocalProtocolCB->NonIdleDetectFunc = IpIsDataFrame;
break;
case PROTOCOL_IPX:
LocalProtocolCB->NonIdleDetectFunc = IpxIsDataFrame;
break;
case PROTOCOL_NBF:
LocalProtocolCB->NonIdleDetectFunc = NbfIsDataFrame;
break;
default:
LocalProtocolCB->NonIdleDetectFunc = NULL;
break;
}
NdisWanGetSystemTime(&LocalProtocolCB->LastNonIdleData);
return(LocalProtocolCB);
}
VOID
NdisWanFreeProtocolCB(
IN PPROTOCOLCB ProtocolCB
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
#if DBG
{
ULONG i;
for (i = 0; i < MAX_MCML; i++) {
ASSERT(ProtocolCB->PacketQueue[i].HeadQueue == NULL);
ASSERT(ProtocolCB->PacketQueue[i].TailQueue == NULL);
}
}
#endif
if (ProtocolCB->InDeviceName.Length != 0) {
NdisWanFreeMemory(ProtocolCB->InDeviceName.Buffer);
}
if (ProtocolCB->OutDeviceName.Length != 0) {
NdisWanFreeNdisString(&ProtocolCB->OutDeviceName);
}
if (ProtocolCB->BindingName.Length != 0) {
NdisWanFreeNdisString(&ProtocolCB->BindingName);
}
if (ProtocolCB->LineUpInfo != NULL) {
NdisWanFreeMemory(ProtocolCB->LineUpInfo);
}
NdisFreeSpinLock(&ProtocolCB->Lock);
NdisFreeToNPagedLookasideList(&LinkProtoCBList, ProtocolCB);
}
PLINKCB
NdisWanAllocateLinkCB(
IN POPENCB OpenCB,
IN ULONG SendWindow
)
/*++
Routine Name:
NdisWanGetLinkCB
Routine Description:
This function returns a pointer to a LinkCB. The LinkCB is either retrieved
from the WanAdapters free list or, if this list is empty, it is allocated.
Arguments:
OpenCB - Pointer to the WanAdapter control block that this Link is
associated with
Return Values:
None
--*/
{
PLINKCB LocalLinkCB;
//
// Figure out how much we need to allocate
//
LocalLinkCB =
NdisAllocateFromNPagedLookasideList(&LinkProtoCBList);
if (LocalLinkCB == NULL) {
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY, ("Error allocating memory for LinkCB"));
return (NULL);
}
NdisZeroMemory(LocalLinkCB, LINKCB_SIZE);
//
// Initialize the control block
//
NdisWanInitializeSyncEvent(&LocalLinkCB->OutstandingFramesEvent);
LocalLinkCB->Signature = LINKCB_SIG;
LocalLinkCB->hLinkContext = NULL;
LocalLinkCB->State = LINK_UP;
LocalLinkCB->OpenCB = OpenCB;
LocalLinkCB->OutstandingFrames = 0;
LocalLinkCB->SendWindowOpen = TRUE;
LocalLinkCB->SBandwidth = 100;
LocalLinkCB->RBandwidth = 100;
LocalLinkCB->SFlowSpec.MaxSduSize = glMaxMTU;
LocalLinkCB->RFlowSpec.MaxSduSize = glMRRU;
LocalLinkCB->LinkInfo.HeaderPadding = OpenCB->WanInfo.HeaderPadding;
LocalLinkCB->LinkInfo.TailPadding = OpenCB->WanInfo.TailPadding;
LocalLinkCB->LinkInfo.SendACCM =
LocalLinkCB->LinkInfo.RecvACCM = OpenCB->WanInfo.DesiredACCM;
LocalLinkCB->LinkInfo.MaxSendFrameSize = glMaxMTU;
LocalLinkCB->LinkInfo.MaxRecvFrameSize = glMRU;
if (OpenCB->Flags & OPEN_LEGACY) {
LocalLinkCB->SendHandler = SendOnLegacyLink;
} else {
LocalLinkCB->SendHandler = SendOnLink;
}
if (OpenCB->MediumType == NdisMediumAtm ||
(OpenCB->MediumType == NdisMediumWan &&
(OpenCB->MediumSubType == NdisWanMediumAtm ||
OpenCB->MediumSubType == NdisWanMediumPppoe)) ||
(OpenCB->MediumType == NdisMediumCoWan &&
(OpenCB->MediumSubType == NdisWanMediumAtm ||
OpenCB->MediumSubType == NdisWanMediumPppoe))) {
LocalLinkCB->RecvHandler = DetectBroadbandFraming;
LocalLinkCB->LinkInfo.SendFramingBits =
PPP_FRAMING | PPP_COMPRESS_ADDRESS_CONTROL;
LocalLinkCB->LinkInfo.RecvFramingBits =
PPP_FRAMING | PPP_COMPRESS_ADDRESS_CONTROL;
} else {
LocalLinkCB->RecvHandler = DetectFraming;
}
LocalLinkCB->SendWindow =
(SendWindow == 0 || SendWindow > OpenCB->WanInfo.MaxTransmit) ?
OpenCB->WanInfo.MaxTransmit : SendWindow;
if (LocalLinkCB->SendWindow == 0) {
LocalLinkCB->SendWindow = 1;
}
if (OpenCB->Flags & OPEN_LEGACY) {
LocalLinkCB->SendResources = OpenCB->SendResources;
} else {
LocalLinkCB->SendResources = 1000;
}
NdisAllocateSpinLock(&LocalLinkCB->Lock);
LocalLinkCB->RefCount = 1;
REF_OPENCB(OpenCB);
InterlockedIncrement(&OpenCB->ActiveLinkCount);
return (LocalLinkCB);
}
VOID
NdisWanFreeLinkCB(
PLINKCB LinkCB
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
POPENCB pOpenCB = LinkCB->OpenCB;
ASSERT(LinkCB->OutstandingFrames == 0);
LinkCB->State = LINK_DOWN;
NdisFreeSpinLock(&LocalLinkCB->Lock);
NdisFreeToNPagedLookasideList(&LinkProtoCBList, LinkCB);
InterlockedDecrement(&pOpenCB->ActiveLinkCount);
DEREF_OPENCB(pOpenCB);
}
NDIS_STATUS
NdisWanAllocateSendResources(
POPENCB OpenCB
)
/*++
Routine Name:
NdisWanAllocateSendResources
Routine Description:
Allocates all resources (SendDescriptors, WanPackets, ...)
required for sending data. Should be called at line up time.
Arguments:
LinkCB - Pointer to the linkcb that the send resources will be attached to.
SendWindow - Maximum number of sends that this link can handle
Return Values:
NDIS_STATUS_SUCCESS
NDIS_STATUS_RESOURCES
--*/
{
ULONG SendWindow;
ULONG Endpoints;
ULONG NumberOfPackets;
ULONG BufferSize;
ULONG WanPacketSize;
PNDIS_WAN_PACKET WanPacket;
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
do {
//
// We have to have atleast of sendwindow+1 of packets for
// each link on the open. In the case of MCML we need
// this amount for each fragment queue and for the
// single non-fragment queue. So this leaves us with...
//
//
// SendWindow + 1 + (glMaxMTU/glMinFragSize * MAX_MCML) *
// number of links on the open
//
SendWindow = OpenCB->WanInfo.MaxTransmit;
Endpoints = OpenCB->WanInfo.Endpoints;
//
// Sendwindow
//
NumberOfPackets = SendWindow;
//
// We keep track of how many fragmenting resources we have
// available for each link
//
NumberOfPackets += ((glMaxMTU/glMinFragSize) * MAX_MCML);
OpenCB->SendResources = NumberOfPackets;
//
// Add one for compression data manipulation
//
NumberOfPackets += 1;
//
// multiplied by the # of links on this open
//
NumberOfPackets *= Endpoints;
//
// The size of the buffer that we create is
//
BufferSize = OpenCB->WanInfo.MaxFrameSize +
OpenCB->WanInfo.HeaderPadding +
OpenCB->WanInfo.TailPadding +
40 + sizeof(PVOID);
//
// We assume compression is always on so we pad out 12%
// incase the compressor expands. I don't know where the
// 12% figure comes from.
//
BufferSize += (OpenCB->WanInfo.MaxFrameSize + 7) / 8;
//
// Make sure that the buffer is dword aligned.
//
BufferSize &= ~((ULONG_PTR)sizeof(PVOID) - 1);
OpenCB->BufferSize = BufferSize;
WanPacketSize =
sizeof(DATA_DESC) + sizeof(NDIS_WAN_PACKET) +
3*sizeof(PVOID) + BufferSize;
//
// If this device needs some special memory flags
// we need to allocate memory for it's WanPackets now.
// Otherwise we will intialize a lookaside list and
// retrieve the packets as needed.
if (OpenCB->WanInfo.MemoryFlags == 0) {
NdisInitializeNPagedLookasideList(&OpenCB->WanPacketPool,
AllocateWanPacket,
FreeWanPacket,
0,
WanPacketSize,
WANPACKET_TAG,
0);
} else {
ULONG PacketMemorySize;
PUCHAR PacketMemory;
ULONG n;
PacketMemorySize =
WanPacketSize * NumberOfPackets;
//
// Allocate the memory for the wan packet buffer pool
//
NdisAllocateMemory(&PacketMemory,
PacketMemorySize,
OpenCB->WanInfo.MemoryFlags,
OpenCB->WanInfo.HighestAcceptableAddress);
if (PacketMemory == NULL) {
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY, ("Error allocating memory for BufferPool, AllocationSize: %d",
PacketMemorySize));
Status = NDIS_STATUS_RESOURCES;
break;
}
OpenCB->PacketMemory = PacketMemory;
OpenCB->PacketMemorySize = PacketMemorySize;
NdisInitializeSListHead(&OpenCB->WanPacketList);
for (n = 0; n < NumberOfPackets; n++) {
PDATA_DESC DataDesc;
//
// Point to the DataDesc
//
DataDesc =
(PDATA_DESC)PacketMemory;
PacketMemory =
((PUCHAR)(DataDesc + 1) + sizeof(PVOID));
(ULONG_PTR)PacketMemory &=
~((ULONG_PTR)sizeof(PVOID) - 1);
//
// Point to the WanPacket
//
WanPacket =
(PNDIS_WAN_PACKET)PacketMemory;
PacketMemory =
((PUCHAR)(WanPacket + 1) + sizeof(PVOID));
(ULONG_PTR)PacketMemory &=
~((ULONG_PTR)sizeof(PVOID) - 1);
//
// Point to the begining of the data buffer
//
WanPacket->StartBuffer = PacketMemory;
WanPacket->EndBuffer =
PacketMemory + BufferSize - sizeof(PVOID);
NdisInterlockedPushEntrySList(&OpenCB->WanPacketList,
(PSLIST_ENTRY)DataDesc,
&OpenCB->Lock);
PacketMemory += BufferSize + sizeof(PVOID);
(ULONG_PTR)PacketMemory &=
~((ULONG_PTR)sizeof(PVOID) - 1);
}
}
} while ( FALSE );
if (Status == NDIS_STATUS_SUCCESS) {
OpenCB->Flags |= SEND_RESOURCES;
}
return (Status);
}
VOID
NdisWanFreeSendResources(
POPENCB OpenCB
)
/*++
Routine Name:
NdisWanFreeSendResources
Routine Description:
This routine removes the WanPackets from this opencb's send list
and free's the memory allocated for these packets. Should be called
when we are cleaningup an opencb.
Arguments:
OpenCB - Pointer to the opencb that the resources are being freed from.
Return Values:
None
--*/
{
PUCHAR PacketMemory;
ULONG PacketMemorySize, Flags;
PacketMemory = OpenCB->PacketMemory;
PacketMemorySize = OpenCB->PacketMemorySize;
Flags = OpenCB->WanInfo.MemoryFlags;
if (OpenCB->WanInfo.MemoryFlags == 0) {
NdisDeleteNPagedLookasideList(&OpenCB->WanPacketPool);
return;
}
//
// Remove the packets from the wan packet pool
//
for (; ;) {
PDATA_DESC DataDesc;
DataDesc = (PDATA_DESC)
NdisInterlockedPopEntrySList(&OpenCB->WanPacketList,
&OpenCB->Lock);
if (DataDesc == NULL) {
break;
}
}
ASSERT(NdisQueryDepthSList(&OpenCB->WanPacketList) == 0);
//
// Free the block of memory allocated for this send
//
if (PacketMemory != NULL) {
NdisFreeMemory(OpenCB->PacketMemory,
OpenCB->PacketMemorySize,
OpenCB->Flags);
}
}
PBUNDLECB
NdisWanAllocateBundleCB(
VOID
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
PBUNDLECB LocalBundleCB = NULL;
PWSTR IOName = L"I/O ProtocolCB";
PPROTOCOLCB ProtocolCB;
PSAMPLE_TABLE SampleTable;
PBOND_INFO BonDInfo;
UINT Class;
PUCHAR pMem;
//
// Allocation size is the size of the control block plus the size
// of a table of pointers to protocolcb's that might be routed to
// this bundle.
//
pMem =
NdisAllocateFromNPagedLookasideList(&BundleCBList);
if (pMem == NULL) {
return (NULL);
}
NdisZeroMemory(pMem, BUNDLECB_SIZE);
LocalBundleCB = (PBUNDLECB)pMem;
pMem += sizeof(BUNDLECB) + sizeof(PVOID);
//
// This is the memory used for the I/O protocolcb
//
(PUCHAR)ProtocolCB = pMem;
(ULONG_PTR)ProtocolCB &= ~((ULONG_PTR)sizeof(PVOID) - 1);
pMem += sizeof(PROTOCOLCB) + sizeof(PVOID);
//
// This is the protocolcb table
//
(PUCHAR)LocalBundleCB->ProtocolCBTable = pMem;
(ULONG_PTR)LocalBundleCB->ProtocolCBTable &=
~((ULONG_PTR)sizeof(PVOID) - 1);
pMem += (MAX_PROTOCOLS * sizeof(PPROTOCOLCB)) + sizeof(PVOID);
//
// Initialize the BundleCB
//
NdisAllocateSpinLock(&LocalBundleCB->Lock);
InitializeListHead(&LocalBundleCB->LinkCBList);
for (Class = 0; Class < MAX_MCML; Class++) {
PRECV_DESC RecvDescHole;
PSEND_FRAG_INFO FragInfo;
PBUNDLE_RECV_INFO RecvInfo;
FragInfo = &LocalBundleCB->SendFragInfo[Class];
RecvInfo = &LocalBundleCB->RecvInfo[Class];
InitializeListHead(&FragInfo->FragQueue);
FragInfo->MinFragSize = glMinFragSize;
FragInfo->MaxFragSize = glMaxFragSize;
InitializeListHead(&RecvInfo->AssemblyList);
//
// Init the recv hole desc
//
RecvDescHole =
NdisWanAllocateRecvDesc(0);
if (RecvDescHole == NULL) {
UINT i;
for (i = 0; i < MAX_MCML; i++) {
RecvInfo = &LocalBundleCB->RecvInfo[i];
if (RecvInfo->RecvDescHole != NULL) {
NdisWanFreeRecvDesc(RecvInfo->RecvDescHole);
}
}
NdisFreeToNPagedLookasideList(&BundleCBList, LocalBundleCB);
return (NULL);
}
RecvDescHole->Flags = MULTILINK_HOLE_FLAG;
RecvInfo->RecvDescHole = RecvDescHole;
InsertHeadList(&RecvInfo->AssemblyList, &RecvDescHole->Linkage);
RecvInfo->AssemblyCount++;
}
InitializeListHead(&LocalBundleCB->ProtocolCBList);
NdisWanInitializeSyncEvent(&LocalBundleCB->OutstandingFramesEvent);
LocalBundleCB->State = BUNDLE_UP;
LocalBundleCB->FramingInfo.MaxRSendFrameSize = glMaxMTU;
LocalBundleCB->FramingInfo.MaxRRecvFrameSize = glMRRU;
LocalBundleCB->SFlowSpec.MaxSduSize = glMaxMTU;
LocalBundleCB->RFlowSpec.MaxSduSize = glMRRU;
NdisWanGetSystemTime(&LocalBundleCB->LastNonIdleData);
LocalBundleCB->SendCompInfo.CompType =
LocalBundleCB->RecvCompInfo.CompType = COMPTYPE_NONE;
//
// Add the protocolcb to the bundle's table and list
//
ProtocolCB->ProtocolType = PROTOCOL_PRIVATE_IO;
ProtocolCB->PPPProtocolID = PPP_PROTOCOL_PRIVATE_IO;
ProtocolCB->BundleCB = LocalBundleCB;
ProtocolCB->State = PROTOCOL_ROUTED;
NdisWanStringToNdisString(&ProtocolCB->InDeviceName, IOName);
LocalBundleCB->IoProtocolCB = ProtocolCB;
return (LocalBundleCB);
}
VOID
NdisWanFreeBundleCB(
IN PBUNDLECB BundleCB
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
UINT Class;
PPROTOCOLCB IoProtocolCB;
PPACKET_QUEUE PacketQueue;
FlushAssemblyLists(BundleCB);
if (BundleCB->Flags & BOND_ENABLED) {
RemoveEntryGlobalList(BonDWorkList, &BundleCB->BonDLinkage);
}
//
// Free the hole place holders
//
for (Class = 0; Class < MAX_MCML; Class++) {
PBUNDLE_RECV_INFO RecvInfo =
&BundleCB->RecvInfo[Class];
ASSERT(RecvInfo->RecvDescHole != NULL);
NdisWanFreeRecvDesc(RecvInfo->RecvDescHole);
RecvInfo->RecvDescHole = NULL;
}
#if 0
KeCancelTimer(&BundleCB->BonDTimer);
#endif
IoProtocolCB = BundleCB->IoProtocolCB;
PacketQueue = &IoProtocolCB->PacketQueue[MAX_MCML];
ASSERT(IsPacketQueueEmpty(PacketQueue));
//
// If we have ppp packets queued we need
// to flush them and free the memory!
//
while (!IsPacketQueueEmpty(PacketQueue)) {
PNDIS_PACKET Packet;
Packet =
RemoveHeadPacketQueue(PacketQueue)
CompleteNdisPacket(IoProtocolCB->MiniportCB,
IoProtocolCB,
Packet);
}
sl_compress_terminate(&BundleCB->VJCompress);
if (BundleCB->Flags & SEND_CCP_ALLOCATED) {
WanDeallocateCCP(BundleCB,
&BundleCB->SendCompInfo,
TRUE);
BundleCB->Flags &= ~SEND_CCP_ALLOCATED;
}
if (BundleCB->Flags & RECV_CCP_ALLOCATED) {
WanDeallocateCCP(BundleCB,
&BundleCB->RecvCompInfo,
FALSE);
BundleCB->Flags &= ~RECV_CCP_ALLOCATED;
}
if (BundleCB->Flags & SEND_ECP_ALLOCATED) {
WanDeallocateECP(BundleCB,
&BundleCB->SendCompInfo,
&BundleCB->SendCryptoInfo);
BundleCB->Flags &= ~SEND_ECP_ALLOCATED;
}
if (BundleCB->Flags & RECV_ECP_ALLOCATED) {
WanDeallocateECP(BundleCB,
&BundleCB->RecvCompInfo,
&BundleCB->RecvCryptoInfo);
BundleCB->Flags &= ~RECV_ECP_ALLOCATED;
}
if (BundleCB->BonDAllocation != NULL) {
NdisWanFreeMemory(BundleCB->BonDAllocation);
BundleCB->BonDAllocation = NULL;
}
BundleCB->State = BUNDLE_DOWN;
NdisFreeSpinLock(&BundleCB->Lock);
NdisWanFreeNdisString(&BundleCB->IoProtocolCB->InDeviceName);
NdisFreeToNPagedLookasideList(&BundleCBList, BundleCB);
}
NDIS_STATUS
NdisWanCreateProtocolInfoTable(
VOID
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
ULONG ulAllocationSize = 0;
PUCHAR AllocatedMemory;
PROTOCOL_INFO ProtocolInfo;
//
// Allocate ProtocolLookupTable. This table is used to match protocol values
// with their corresponding PPP Protocol values. The table size is set to
// MAX_PROTOCOLS.
//
ulAllocationSize = sizeof(PROTOCOL_INFO_TABLE) +
(sizeof(PROTOCOL_INFO) * MAX_PROTOCOLS);
NdisWanAllocateMemory(&AllocatedMemory, ulAllocationSize, PROTOCOLTABLE_TAG);
if (AllocatedMemory == NULL) {
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY,
("Failed allocating memory for ProtocolLookupTable! TableSize: %d",
ulAllocationSize));
return (NDIS_STATUS_RESOURCES);
}
ProtocolInfoTable = (PPROTOCOL_INFO_TABLE)AllocatedMemory;
//
// Save the allocation size
//
ProtocolInfoTable->ulAllocationSize = ulAllocationSize;
//
// Store the array size. This should be read from the registry
//
ProtocolInfoTable->ulArraySize = MAX_PROTOCOLS;
NdisAllocateSpinLock(&ProtocolInfoTable->Lock);
//
// Setup the pointer to the ProtocolValue array
//
AllocatedMemory += sizeof(PROTOCOL_INFO_TABLE);
ProtocolInfoTable->ProtocolInfo = (PPROTOCOL_INFO)(AllocatedMemory);
//
// Insert default values for Netbuei, IP, IPX
//
ProtocolInfo.ProtocolType = PROTOCOL_PRIVATE_IO;
ProtocolInfo.PPPId = PPP_PROTOCOL_PRIVATE_IO;
ProtocolInfo.MTU = DEFAULT_MTU;
ProtocolInfo.TunnelMTU = DEFAULT_MTU;
ProtocolInfo.PacketQueueDepth = DEFAULT_PACKETQUEUE_DEPTH;
ProtocolInfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&ProtocolInfo);
ProtocolInfo.ProtocolType = PROTOCOL_IP;
ProtocolInfo.PPPId = PPP_PROTOCOL_IP;
ProtocolInfo.MTU = DEFAULT_MTU;
ProtocolInfo.TunnelMTU = DEFAULT_TUNNEL_MTU;
ProtocolInfo.PacketQueueDepth = DEFAULT_PACKETQUEUE_DEPTH;
ProtocolInfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&ProtocolInfo);
ProtocolInfo.ProtocolType = PROTOCOL_IPX;
ProtocolInfo.PPPId = PPP_PROTOCOL_IPX;
ProtocolInfo.MTU = DEFAULT_MTU;
ProtocolInfo.TunnelMTU = DEFAULT_MTU;
ProtocolInfo.PacketQueueDepth = DEFAULT_PACKETQUEUE_DEPTH;
ProtocolInfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&ProtocolInfo);
ProtocolInfo.ProtocolType = PROTOCOL_NBF;
ProtocolInfo.PPPId = PPP_PROTOCOL_NBF;
ProtocolInfo.MTU = DEFAULT_MTU;
ProtocolInfo.TunnelMTU = DEFAULT_MTU;
ProtocolInfo.PacketQueueDepth = DEFAULT_PACKETQUEUE_DEPTH;
ProtocolInfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&ProtocolInfo);
ProtocolInfo.ProtocolType = PROTOCOL_APPLETALK;
ProtocolInfo.PPPId = PPP_PROTOCOL_APPLETALK;
ProtocolInfo.MTU = DEFAULT_MTU;
ProtocolInfo.TunnelMTU = DEFAULT_MTU;
ProtocolInfo.PacketQueueDepth = DEFAULT_PACKETQUEUE_DEPTH;
ProtocolInfo.Flags = PROTOCOL_UNBOUND;
SetProtocolInfo(&ProtocolInfo);
return (Status);
}
VOID
NdisWanDestroyProtocolInfoTable(
VOID
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
NdisFreeSpinLock(&ProtocolInfoTable->Lock);
NdisWanFreeMemory(ProtocolInfoTable);
}
NDIS_STATUS
NdisWanCreateConnectionTable(
ULONG TableSize
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
ULONG ulAllocationSize = 0;
ULONG ulArraySize;
PUCHAR AllocatedMemory;
PCONNECTION_TABLE NewTable;
//
// Since we skip the first place in the tables we increase the
// size by one.
//
ulArraySize = TableSize + 1;
//
// Allocate the Bundle and Link Arrays based on the number of possible connections
// that we have in the system. This should be grown if we get called
// to reinitialize and gain new ports.
//
ulAllocationSize = sizeof(CONNECTION_TABLE) +
(sizeof(PBUNDLECB) * ulArraySize) +
(sizeof(PLINKCB) * ulArraySize);
NdisWanAllocateMemory(&AllocatedMemory, ulAllocationSize, CONNECTIONTABLE_TAG);
if (AllocatedMemory == NULL) {
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY,
("Failed allocating memory for ConnectionTable! Size: %d, Links: %d",
ulAllocationSize, TableSize));
return (NDIS_STATUS_RESOURCES);
}
NewTable = (PCONNECTION_TABLE)AllocatedMemory;
//
// This is the amount of memory we allocated
//
NewTable->ulAllocationSize = ulAllocationSize;
NewTable->ulArraySize = TableSize;
NewTable->ulNextLink =
NewTable->ulNextBundle = 1;
InitializeListHead(&NewTable->BundleList);
InitializeListHead(&NewTable->LinkList);
//
// Setup pointer to the linkcb array
//
AllocatedMemory += sizeof(CONNECTION_TABLE);
NewTable->LinkArray = (PLINKCB*)(AllocatedMemory);
//
// Setup the pointer to the bundlecb array
//
AllocatedMemory += (sizeof(PLINKCB) * ulArraySize);
NewTable->BundleArray = (PBUNDLECB*)(AllocatedMemory);
if (ConnectionTable != NULL) {
PCONNECTION_TABLE FreeTable;
//
// We must be growing the table. This will be
// called with the current connectiontable lock
// held!
//
NewTable->ulNumActiveLinks = ConnectionTable->ulNumActiveLinks;
NewTable->ulNumActiveBundles = ConnectionTable->ulNumActiveBundles;
NewTable->ulNextLink = ConnectionTable->ulNextLink;
NewTable->ulNextBundle = ConnectionTable->ulNextBundle;
NdisMoveMemory((PUCHAR)NewTable->LinkArray,
(PUCHAR)ConnectionTable->LinkArray,
ConnectionTable->ulArraySize * sizeof(PLINKCB));
NdisMoveMemory((PUCHAR)NewTable->BundleArray,
(PUCHAR)ConnectionTable->BundleArray,
ConnectionTable->ulArraySize * sizeof(PBUNDLECB));
while (!IsListEmpty(&ConnectionTable->BundleList)) {
PBUNDLECB BundleCB;
BundleCB = (PBUNDLECB)RemoveHeadList(&ConnectionTable->BundleList);
InsertTailList(&NewTable->BundleList, &BundleCB->Linkage);
}
while (!IsListEmpty(&ConnectionTable->LinkList)) {
PLIST_ENTRY Entry;
PLINKCB LinkCB;
Entry = RemoveHeadList(&ConnectionTable->LinkList);
LinkCB =
(PLINKCB)CONTAINING_RECORD(Entry, LINKCB, ConnTableLinkage);
InsertTailList(&NewTable->LinkList, &LinkCB->ConnTableLinkage);
}
FreeTable = ConnectionTable;
ConnectionTable = NewTable;
//
// Destroy the old table
//
NdisWanFreeMemory(FreeTable);
} else {
ConnectionTable = NewTable;
}
return (NDIS_STATUS_SUCCESS);
}
PNDIS_PACKET
NdisWanAllocateNdisPacket(
ULONG MagicNumber
)
{
PNDIS_PACKET ReturnPacket = NULL;
PPOOL_DESC PoolDesc;
NDIS_STATUS Status = NDIS_STATUS_FAILURE;
ULONG i;
PSINGLE_LIST_ENTRY p = NULL;
PNDISWAN_PROTOCOL_RESERVED pres;
NdisAcquireSpinLock(&PacketPoolList.Lock);
//
// Walk the pool desc list and try to allocate a packet
//
PoolDesc = (PPOOL_DESC)PacketPoolList.List.Flink;
while (PoolDesc != (PPOOL_DESC)&PacketPoolList.List) {
p = PopEntryList(&PoolDesc->Head);
if (p != NULL) {
break;
}
PoolDesc = (PPOOL_DESC)PoolDesc->Linkage.Flink;
}
if (p == NULL) {
//
// We have walked the pool list and did not find any
// free packets on any of the free pools, so allocate
// a new pool and get a packet from it.
//
NdisWanAllocatePriorityMemory(&PoolDesc,
sizeof(POOL_DESC),
POOLDESC_TAG,
NormalPoolPriority);
if (PoolDesc == NULL) {
NdisReleaseSpinLock(&PacketPoolList.Lock);
return (NULL);
}
NdisAllocatePacketPoolEx(&Status,
&PoolDesc->PoolHandle,
glPacketPoolCount,
0,
sizeof(NDISWAN_PROTOCOL_RESERVED));
if (Status != NDIS_STATUS_SUCCESS) {
NdisWanFreeMemory(PoolDesc);
NdisReleaseSpinLock(&PacketPoolList.Lock);
return (NULL);
}
for (i = 0; i < glPacketPoolCount; i++) {
PNDIS_PACKET np;
NdisAllocatePacket(&Status,
&np,
PoolDesc->PoolHandle);
ASSERT(np != NULL);
pres = PPROTOCOL_RESERVED_FROM_NDIS(np);
PushEntryList(&PoolDesc->Head, &pres->SLink);
PoolDesc->FreeCount++;
}
InsertTailList(&PacketPoolList.List, &PoolDesc->Linkage);
PacketPoolList.TotalDescCount++;
PacketPoolList.FreeCount += PoolDesc->FreeCount;
if (PacketPoolList.TotalDescCount >
PacketPoolList.MaxDescCount) {
PacketPoolList.MaxDescCount = PacketPoolList.TotalDescCount;
}
p = PopEntryList(&PoolDesc->Head);
}
ASSERT(p != NULL);
pres = CONTAINING_RECORD(p, NDISWAN_PROTOCOL_RESERVED, SLink);
ReturnPacket = CONTAINING_RECORD(pres, NDIS_PACKET, ProtocolReserved);
NdisReinitializePacket(ReturnPacket);
PoolDesc->AllocatedCount++;
PoolDesc->FreeCount--;
ASSERT((PoolDesc->AllocatedCount + PoolDesc->FreeCount) == glPacketPoolCount);
if (PoolDesc->AllocatedCount >
PoolDesc->MaxAllocatedCount) {
PoolDesc->MaxAllocatedCount =
PoolDesc->AllocatedCount;
}
PacketPoolList.AllocatedCount++;
PacketPoolList.FreeCount--;
#if DBG
{
PPOOL_DESC pdesc;
ULONG FreeCount, AllocatedCount;
pdesc = (PPOOL_DESC)PacketPoolList.List.Flink;
FreeCount = AllocatedCount = 0;
while ((PVOID)pdesc != (PVOID)&PacketPoolList.List) {
FreeCount += pdesc->FreeCount;
AllocatedCount += pdesc->AllocatedCount;
pdesc = (PPOOL_DESC)pdesc->Linkage.Flink;
}
if (PacketPoolList.AllocatedCount != AllocatedCount ||
PacketPoolList.FreeCount != FreeCount){
DbgPrint("NDISWAN: AllocatePacket - PacketPool counts out of sync!\n");
DbgBreakPoint();
}
#if 0
if (PacketPoolList.AllocatedCount > 200) {
DbgPrint("NDISWAN: AllocatePacket - Over 200 outstanding packets!\n");
DbgBreakPoint();
}
#endif
}
#endif
if (PacketPoolList.AllocatedCount >
PacketPoolList.MaxAllocatedCount) {
PacketPoolList.MaxAllocatedCount =
PacketPoolList.AllocatedCount;
}
pres->MagicNumber = MagicNumber;
pres->PoolDesc = PoolDesc;
NDIS_SET_PACKET_HEADER_SIZE(ReturnPacket,
MAC_HEADER_LENGTH);
NDIS_SET_PACKET_STATUS(ReturnPacket,
NDIS_STATUS_SUCCESS);
NdisReleaseSpinLock(&PacketPoolList.Lock);
return (ReturnPacket);
}
VOID
NdisWanFreeNdisPacket(
PNDIS_PACKET NdisPacket
)
{
PNDISWAN_PROTOCOL_RESERVED pres;
PPOOL_DESC PoolDesc;
PNDIS_BUFFER NdisBuffer;
PUCHAR DataBuffer;
pres = PPROTOCOL_RESERVED_FROM_NDIS(NdisPacket);
ASSERT(pres->MagicNumber == MAGIC_INTERNAL_ALLOC ||
pres->MagicNumber == MAGIC_INTERNAL_IO ||
pres->MagicNumber == MAGIC_INTERNAL_SEND ||
pres->MagicNumber == MAGIC_INTERNAL_RECV ||
pres->MagicNumber == MAGIC_INTERNAL_ALLOC);
PoolDesc = pres->PoolDesc;
NdisAcquireSpinLock(&PacketPoolList.Lock);
#if DBG
{
PPOOL_DESC pdesc;
pdesc = (PPOOL_DESC)PacketPoolList.List.Flink;
while ((PVOID)pdesc != (PVOID)&PacketPoolList.List) {
if (PoolDesc == pdesc) {
//
// We found the correct pool
//
break;
}
pdesc = (PPOOL_DESC)pdesc->Linkage.Flink;
}
if((PVOID)PoolDesc == (PVOID)&PacketPoolList.List){
DbgPrint("NDISWAN: FreePacket PoolDesc %x not on PacketPoolList!\n",
PoolDesc);
DbgBreakPoint();
}
}
#endif
PushEntryList(&PoolDesc->Head, &pres->SLink);
PoolDesc->AllocatedCount--;
PoolDesc->FreeCount++;
ASSERT((PoolDesc->AllocatedCount + PoolDesc->FreeCount) == glPacketPoolCount);
PacketPoolList.AllocatedCount--;
PacketPoolList.FreeCount++;
#if DBG
{
PPOOL_DESC pdesc;
ULONG FreeCount, AllocatedCount;
pdesc = (PPOOL_DESC)PacketPoolList.List.Flink;
FreeCount = AllocatedCount = 0;
while ((PVOID)pdesc != (PVOID)&PacketPoolList.List) {
FreeCount += pdesc->FreeCount;
AllocatedCount += pdesc->AllocatedCount;
pdesc = (PPOOL_DESC)pdesc->Linkage.Flink;
}
if (PacketPoolList.AllocatedCount != AllocatedCount ||
PacketPoolList.FreeCount != FreeCount){
DbgPrint("NDISWAN: FreePacket - PacketPool counts out of sync!\n");
DbgBreakPoint();
}
}
#endif
//
// If all of the packets have been returned to this pool desc
// and this is not the only pool desc then free it!
//
if (PoolDesc->AllocatedCount == 0 &&
PacketPoolList.TotalDescCount > 1 &&
PacketPoolList.FreeCount > PoolDesc->FreeCount) {
PSINGLE_LIST_ENTRY p = NULL;
RemoveEntryList(&PoolDesc->Linkage);
PacketPoolList.TotalDescCount--;
PacketPoolList.FreeCount -= PoolDesc->FreeCount;
p = PopEntryList(&PoolDesc->Head);
while (p != NULL) {
PNDIS_PACKET ReturnPacket;
pres = CONTAINING_RECORD(p, NDISWAN_PROTOCOL_RESERVED, SLink);
ReturnPacket = CONTAINING_RECORD(pres, NDIS_PACKET, ProtocolReserved);
NdisFreePacket(ReturnPacket);
p = PopEntryList(&PoolDesc->Head);
}
NdisFreePacketPool(PoolDesc->PoolHandle);
NdisWanFreeMemory(PoolDesc);
}
NdisReleaseSpinLock(&PacketPoolList.Lock);
}
PVOID
AllocateDataDesc(
POOL_TYPE PoolType,
SIZE_T NumberOfBytes,
ULONG Tag
)
/*++
Routine Name:
AllocateDataDesc
Routine Description:
This routine is called by the lookasidelist manager if there are not
any descriptors available. It will allocated memory for: DATA_DESC,
NDIS_BUFFER, NDIS_PACKET, and a block of memory of size.
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
PUCHAR DataBuffer;
NDIS_STATUS Status;
NdisWanAllocatePriorityMemory(&DataDesc,
NumberOfBytes,
Tag,
NormalPoolPriority);
if (DataDesc == NULL) {
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY,
("AllocateDataDesc failed! Size %d",
NumberOfBytes));
return (NULL);
}
DataBuffer =
((PUCHAR)(DataDesc + 1) + sizeof(PVOID));
(ULONG_PTR)DataBuffer &=
~((ULONG_PTR)sizeof(PVOID) - 1);
DataDesc->DataBuffer = DataBuffer;
DataDesc->DataBufferLength =
(ULONG)(((PUCHAR)DataDesc + NumberOfBytes) - DataBuffer);
// This is not portable to Win95! I need to allocate a buffer
// pool and use a valid handle.
//
NdisAllocateBuffer(&Status,
&DataDesc->NdisBuffer,
NULL,
DataDesc->DataBuffer,
DataDesc->DataBufferLength);
if (Status != NDIS_STATUS_SUCCESS) {
NdisWanFreeMemory(DataDesc);
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY,
("NdisAllocateBuffer failed! DataBufferSize %d",
DataDesc->DataBufferLength));
return (NULL);
}
DataDesc->NdisPacket =
NdisWanAllocateNdisPacket(MAGIC_INTERNAL_ALLOC);
if (DataDesc->NdisPacket == NULL) {
NdisFreeBuffer(DataDesc->NdisBuffer);
NdisWanFreeMemory(DataDesc);
NdisWanDbgOut(DBG_CRITICAL_ERROR, DBG_MEMORY,
("NdisWanAllocateNdisPacket failed! DataBufferSize %d"));
return (NULL);
}
NdisChainBufferAtFront(DataDesc->NdisPacket,
DataDesc->NdisBuffer);
return(DataDesc);
}
VOID
FreeDataDesc(
PVOID Buffer
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
DataDesc = (PDATA_DESC)Buffer;
NdisReinitializePacket(DataDesc->NdisPacket);
NdisWanFreeNdisPacket(DataDesc->NdisPacket);
NdisFreeBuffer(DataDesc->NdisBuffer);
NdisWanFreeMemory(Buffer);
}
PRECV_DESC
NdisWanAllocateRecvDesc(
ULONG SizeNeeded
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
PRECV_DESC RecvDesc;
ULONG Length;
PNPAGED_LOOKASIDE_LIST LookasideList;
if (SizeNeeded > glLargeDataBufferSize) {
DbgPrint("NDISWAN: Error Allocating RecvDesc Size %d\n",
SizeNeeded);
return (NULL);
} else if (SizeNeeded > glSmallDataBufferSize) {
LookasideList = &LargeDataDescList;
} else {
LookasideList = &SmallDataDescList;
}
DataDesc =
NdisAllocateFromNPagedLookasideList(LookasideList);
if (DataDesc == NULL) {
return (NULL);
}
PPROTOCOL_RESERVED_FROM_NDIS(DataDesc->NdisPacket)->MagicNumber =
MAGIC_INTERNAL_RECV;
DataDesc->LookasideList = LookasideList;
RecvDesc = &DataDesc->RecvDesc;
NdisZeroMemory(RecvDesc, sizeof(RECV_DESC));
RecvDesc->Signature = RECVDESC_SIG;
RecvDesc->DataBuffer =
DataDesc->DataBuffer;
RecvDesc->NdisBuffer =
DataDesc->NdisBuffer;
RecvDesc->NdisPacket =
DataDesc->NdisPacket;
NdisQueryBuffer(RecvDesc->NdisBuffer,
&RecvDesc->StartBuffer,
&Length);
RecvDesc->CurrentBuffer =
RecvDesc->StartBuffer + MAC_HEADER_LENGTH + PROTOCOL_HEADER_LENGTH;
return (RecvDesc);
}
VOID
NdisWanFreeRecvDesc(
PRECV_DESC RecvDesc
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
PNDIS_BUFFER NdisBuffer;
PNDIS_PACKET NdisPacket;
PNPAGED_LOOKASIDE_LIST LookasideList;
if (RecvDesc->OriginalPacket != NULL) {
NdisReturnPackets(&RecvDesc->OriginalPacket, 1);
RecvDesc->OriginalPacket = NULL;
}
DataDesc =
CONTAINING_RECORD(RecvDesc, DATA_DESC, RecvDesc);
NdisBuffer =
DataDesc->NdisBuffer;
NdisPacket =
DataDesc->NdisPacket;
LookasideList =
DataDesc->LookasideList;
#if DBG
{
ULONG BufferCount;
NdisQueryPacket(NdisPacket,
NULL,
&BufferCount,
NULL,
NULL);
ASSERT(BufferCount == 1);
}
#endif
NdisAdjustBufferLength(NdisBuffer,
DataDesc->DataBufferLength);
NdisRecalculatePacketCounts(NdisPacket);
NDIS_SET_PACKET_HEADER_SIZE(NdisPacket,
MAC_HEADER_LENGTH);
NDIS_SET_PACKET_STATUS(NdisPacket,
NDIS_STATUS_SUCCESS);
ASSERT(PPROTOCOL_RESERVED_FROM_NDIS(NdisPacket)->MagicNumber == MAGIC_INTERNAL_RECV);
NdisFreeToNPagedLookasideList(LookasideList, DataDesc);
}
PSEND_DESC
NdisWanAllocateSendDesc(
PLINKCB LinkCB,
ULONG SizeNeeded
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
POPENCB OpenCB;
PSEND_DESC SendDesc;
//
// Need to determine if this link represents a legacy
// wan miniport or a NDIS 5.0 miniport and get the
// appropriate buffer descriptor.
//
OpenCB = LinkCB->OpenCB;
if (OpenCB->Flags & OPEN_LEGACY) {
PDATA_DESC DataDesc;
PNDIS_WAN_PACKET WanPacket;
//
// Get a buffer desriptor off of the open block
//
if (OpenCB->WanInfo.MemoryFlags == 0) {
PNPAGED_LOOKASIDE_LIST LookasideList;
LookasideList = &OpenCB->WanPacketPool;
DataDesc =
NdisAllocateFromNPagedLookasideList(LookasideList);
if (DataDesc == NULL) {
return(NULL);
}
DataDesc->LookasideList = LookasideList;
WanPacket = (PNDIS_WAN_PACKET)
((PUCHAR)(DataDesc + 1) + sizeof(PVOID));
(ULONG_PTR)WanPacket &=
~((ULONG_PTR)sizeof(PVOID) - 1);
//
// Point to the begining of the data.
//
WanPacket->StartBuffer =
((PUCHAR)(WanPacket + 1) + sizeof(PVOID));
(ULONG_PTR)WanPacket->StartBuffer &=
~((ULONG_PTR)sizeof(PVOID) - 1);
WanPacket->EndBuffer = WanPacket->StartBuffer +
OpenCB->BufferSize - sizeof(PVOID);
} else {
DataDesc = (PDATA_DESC)
NdisInterlockedPopEntrySList(&OpenCB->WanPacketList,
&OpenCB->Lock);
if (DataDesc == NULL) {
return (NULL);
}
}
SendDesc = &DataDesc->SendDesc;
NdisZeroMemory(SendDesc, sizeof(SEND_DESC));
SendDesc->Signature = SENDESC_SIG;
SendDesc->LinkCB = LinkCB;
SendDesc->WanPacket = WanPacket;
WanPacket->CurrentBuffer =
WanPacket->StartBuffer + OpenCB->WanInfo.HeaderPadding;
SendDesc->StartBuffer =
WanPacket->CurrentBuffer;
} else {
PDATA_DESC DataDesc;
ULONG Length;
PNPAGED_LOOKASIDE_LIST LookasideList;
if (SizeNeeded > glLargeDataBufferSize) {
DbgPrint("NDISWAN: Error Allocating SendDesc Size %d\n",
SizeNeeded);
return (NULL);
} else if (SizeNeeded > glSmallDataBufferSize) {
LookasideList = &LargeDataDescList;
} else {
LookasideList = &SmallDataDescList;
}
DataDesc =
NdisAllocateFromNPagedLookasideList(LookasideList);
if (DataDesc == NULL) {
return (NULL);
}
DataDesc->LookasideList = LookasideList;
PPROTOCOL_RESERVED_FROM_NDIS(DataDesc->NdisPacket)->MagicNumber =
MAGIC_INTERNAL_SEND;
SendDesc = &DataDesc->SendDesc;
NdisZeroMemory(SendDesc, sizeof(SEND_DESC));
SendDesc->Signature = SENDESC_SIG;
SendDesc->LinkCB = LinkCB;
SendDesc->NdisPacket =
DataDesc->NdisPacket;
SendDesc->NdisBuffer =
DataDesc->NdisBuffer;
NdisQueryBuffer(SendDesc->NdisBuffer,
&SendDesc->StartBuffer,
&Length);
}
LinkCB->SendResources -= 1;
LinkCB->BundleCB->SendResources -= 1;
return (SendDesc);
}
VOID
NdisWanFreeSendDesc(
PSEND_DESC SendDesc
)
/*++
Routine Name:
Routine Description:
Arguments:
Return Values:
--*/
{
POPENCB OpenCB;
PDATA_DESC DataDesc;
PLINKCB LinkCB;
PNPAGED_LOOKASIDE_LIST LookasideList;
LinkCB =
SendDesc->LinkCB;
OpenCB = LinkCB->OpenCB;
DataDesc =
CONTAINING_RECORD(SendDesc, DATA_DESC, SendDesc);
LookasideList = DataDesc->LookasideList;
if (OpenCB->Flags & OPEN_LEGACY) {
if (OpenCB->WanInfo.MemoryFlags == 0) {
NdisFreeToNPagedLookasideList(LookasideList, DataDesc);
} else {
NdisInterlockedPushEntrySList(&OpenCB->WanPacketList,
(PSLIST_ENTRY)DataDesc,
&OpenCB->Lock);
}
} else {
PNDIS_BUFFER NdisBuffer;
PNDIS_PACKET NdisPacket;
NdisBuffer =
DataDesc->NdisBuffer;
NdisPacket =
DataDesc->NdisPacket;
#if DBG
{
ULONG BufferCount;
NdisQueryPacket(NdisPacket,
NULL,
&BufferCount,
NULL,
NULL);
ASSERT(BufferCount == 1);
}
#endif
NdisAdjustBufferLength(NdisBuffer,
DataDesc->DataBufferLength);
NdisRecalculatePacketCounts(NdisPacket);
NDIS_SET_PACKET_HEADER_SIZE(NdisPacket,
MAC_HEADER_LENGTH);
NDIS_SET_PACKET_STATUS(NdisPacket,
NDIS_STATUS_SUCCESS);
ASSERT(PPROTOCOL_RESERVED_FROM_NDIS(NdisPacket)->MagicNumber == MAGIC_INTERNAL_SEND);
NdisFreeToNPagedLookasideList(LookasideList, DataDesc);
}
LinkCB->SendResources += 1;
LinkCB->BundleCB->SendResources += 1;
}
PCL_AFSAPCB
NdisWanAllocateClAfSapCB(
POPENCB OpenCB,
PCO_ADDRESS_FAMILY AddressFamily
)
{
PCL_AFSAPCB AfSapCB;
AfSapCB =
NdisAllocateFromNPagedLookasideList(&AfSapVcCBList);
if (AfSapCB == NULL) {
return (NULL);
}
NdisZeroMemory(AfSapCB, sizeof(CL_AFSAPCB));
AfSapCB->Signature = CLAFSAP_SIG;
AfSapCB->OpenCB = OpenCB;
AfSapCB->Af.AddressFamily = AddressFamily->AddressFamily;
AfSapCB->Af.MajorVersion = AddressFamily->MajorVersion;
AfSapCB->Af.MinorVersion = AddressFamily->MinorVersion;
AfSapCB->RefCount = 1;
AfSapCB->Flags = AF_OPENING;
return (AfSapCB);
}
VOID
NdisWanFreeClAfSapCB(
PCL_AFSAPCB AfSapCB
)
{
NdisFreeToNPagedLookasideList(&AfSapVcCBList,
AfSapCB);
}
PCM_AFSAPCB
NdisWanAllocateCmAfSapCB(
PMINIPORTCB MiniportCB
)
{
PCM_AFSAPCB AfSapCB;
AfSapCB =
NdisAllocateFromNPagedLookasideList(&AfSapVcCBList);
if (AfSapCB == NULL) {
return (NULL);
}
NdisZeroMemory(AfSapCB, sizeof(CM_AFSAPCB));
AfSapCB->Signature = CMAFSAP_SIG;
AfSapCB->MiniportCB = MiniportCB;
REF_MINIPORTCB(MiniportCB);
NdisAcquireSpinLock(&MiniportCB->Lock);
InsertHeadList(&MiniportCB->AfSapCBList,
&AfSapCB->Linkage);
NdisWanInitializeNotificationEvent(&AfSapCB->NotificationEvent);
NdisWanInterlockedInc(&MiniportCB->AfRefCount);
NdisReleaseSpinLock(&MiniportCB->Lock);
return (AfSapCB);
}
VOID
NdisWanFreeCmAfSapCB(
PCM_AFSAPCB AfSapCB
)
{
PMINIPORTCB MiniportCB = AfSapCB->MiniportCB;
NdisAcquireSpinLock(&MiniportCB->Lock);
NdisWanInterlockedDec(&MiniportCB->AfRefCount);
RemoveEntryList(&AfSapCB->Linkage);
NdisReleaseSpinLock(&MiniportCB->Lock);
DEREF_MINIPORTCB(MiniportCB);
NdisFreeToNPagedLookasideList(&AfSapVcCBList,
AfSapCB);
}
PCM_VCCB
NdisWanAllocateCmVcCB(
PCM_AFSAPCB AfSapCB,
NDIS_HANDLE NdisVcHandle
)
{
PCM_VCCB CmVcCB;
CmVcCB =
NdisAllocateFromNPagedLookasideList(&AfSapVcCBList);
if (CmVcCB == NULL) {
return (NULL);
}
NdisZeroMemory(CmVcCB, sizeof(CM_VCCB));
CmVcCB->AfSapCB = AfSapCB;
CmVcCB->Signature = CMVC_SIG;
CmVcCB->NdisVcHandle = NdisVcHandle;
return (CmVcCB);
}
VOID
NdisWanFreeCmVcCB(
PCM_VCCB CmVcCB
)
{
NdisFreeToNPagedLookasideList(&AfSapVcCBList, CmVcCB);
}
NDIS_STATUS
AllocateIoNdisPacket(
ULONG SizeNeeded,
PNDIS_PACKET *NdisPacket,
PNDIS_BUFFER *NdisBuffer,
PUCHAR *DataBuffer
)
/*++
Routine Name:
AllocateIoNdisPacket
Routine Description:
This routine will alocate a packet used to send a PPP control
packet over a wan endpoint. The routine is written with the
assumption that there will only ever be a single NDIS_BUFFER
attached to the packet. This buffer is attached immediately
to the front of the packet. Before calling a miniport the
NDIS_BUFFER must have it's length adjusted and the packet must
recalculate all counts.
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
ULONG Length;
PNPAGED_LOOKASIDE_LIST LookasideList;
if (SizeNeeded > glLargeDataBufferSize) {
DbgPrint("NDISWAN: Error Allocating IoNdisPacket Size %d\n",
SizeNeeded);
return (NDIS_STATUS_FAILURE);
} else if (SizeNeeded > glSmallDataBufferSize) {
LookasideList = &LargeDataDescList;
} else {
LookasideList = &SmallDataDescList;
}
DataDesc =
NdisAllocateFromNPagedLookasideList(LookasideList);
if (DataDesc == NULL) {
return (NDIS_STATUS_RESOURCES);
}
DataDesc->LookasideList = LookasideList;
*NdisPacket =
DataDesc->NdisPacket;
PPROTOCOL_RESERVED_FROM_NDIS(DataDesc->NdisPacket)->MagicNumber =
MAGIC_INTERNAL_IO;
PPROTOCOL_RESERVED_FROM_NDIS(DataDesc->NdisPacket)->DataDesc =
DataDesc;
*NdisBuffer =
DataDesc->NdisBuffer;
NdisQueryBuffer(DataDesc->NdisBuffer,
&DataDesc->DataBuffer,
&Length);
*DataBuffer =
DataDesc->DataBuffer;
return (NDIS_STATUS_SUCCESS);
}
VOID
FreeIoNdisPacket(
PNDIS_PACKET NdisPacket
)
/*++
Routine Name:
FreeIoNdisPacket
Routine Description:
This routine will free a packet used to send a PPP control
packet over a wan endpoint. The routine is written with the
assumption that there will only ever be a single NDIS_BUFFER
attached to the packet. This buffer does not have to be
explicitly removed from the packet here as a pointer to it
is stored in the DATA_DESC itself and will be freed when
the DATA_DESC is freed.
Arguments:
Return Values:
--*/
{
PDATA_DESC DataDesc;
PNDIS_BUFFER NdisBuffer;
PNPAGED_LOOKASIDE_LIST LookasideList;
DataDesc =
PPROTOCOL_RESERVED_FROM_NDIS(NdisPacket)->DataDesc;
ASSERT(PPROTOCOL_RESERVED_FROM_NDIS(NdisPacket)->MagicNumber == MAGIC_INTERNAL_IO);
LookasideList =
DataDesc->LookasideList;
NdisAdjustBufferLength(DataDesc->NdisBuffer,
DataDesc->DataBufferLength);
NdisRecalculatePacketCounts(NdisPacket);
NDIS_SET_PACKET_HEADER_SIZE(NdisPacket,
MAC_HEADER_LENGTH);
NDIS_SET_PACKET_STATUS(NdisPacket,
NDIS_STATUS_SUCCESS);
NdisFreeToNPagedLookasideList(LookasideList, DataDesc);
}
PVOID
AllocateWanPacket(
IN POOL_TYPE PoolType,
IN SIZE_T NumberOfBytes,
IN ULONG Tag
)
{
PVOID pMem;
NdisWanAllocatePriorityMemory(&pMem,
NumberOfBytes,
Tag,
NormalPoolPriority);
return(pMem);
}
VOID
FreeWanPacket(
PVOID WanPacket
)
{
NdisWanFreeMemory(WanPacket);
}