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windows-nt/Source/XPSP1/NT/net/atm/arp/atmarpc/qos.c

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/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
qos.c
Abstract:
Quality Of Service support routines. These are a collection of
heuristics that allow configuration of different types of VCs
between two IP endstations.
Revision History:
Who When What
-------- -------- ----------------------------------------------
arvindm 09-27-96 Created
Notes:
--*/
#include <precomp.h>
#define _FILENUMBER ' SOQ'
#ifdef QOS_HEURISTICS
VOID
AtmArpQosGetPacketSpecs(
IN PVOID Context,
IN PNDIS_PACKET pNdisPacket,
OUT PATMARP_FLOW_INFO *ppFlowInfo,
OUT PATMARP_FLOW_SPEC *ppFlowSpec,
OUT PATMARP_FILTER_SPEC *ppFilterSpec
)
/*++
Routine Description:
Given a packet to be transmitted over an Interface, return the
flow and filter specs for the packet.
We go through the list of configured Flow Info structures on the
specified interface, and find the Flow Info that comes closest
to matching this packet.
For now, the algorithm is: search thru the list of Flow Info structures
configured on the interface -- a match is found when we find a Flow
Info structure that has a PacketSizeLimit greater than or equal to the
packet size (the flow info list is arranged in ascending order of
PacketSizeLimit).
GPC enhancement: if we couldn't find a matching flow on the Interface,
ask the GPC to classify the packet for us.
NOTE: This packet must not have any headers (LLC/SNAP) pre-pended to it.
Arguments:
Context - Actually a pointer to an Interface structure
pNdisPacket - Pointer to the packet to be classified
ppFlowInfo - where we return a pointer to the packet's flow info
ppFlowSpec - where we return a pointer to the packet's flow spec
ppFilterSpec - where we return a pointer to the packet's filter spec
Return Value:
None. See Arguments above.
--*/
{
PATMARP_INTERFACE pInterface;
PATMARP_FLOW_INFO pFlowInfo;
UINT TotalLength;
#if DBG
AA_IRQL EntryIrq, ExitIrq;
#endif
AA_GET_ENTRY_IRQL(EntryIrq);
pInterface = (PATMARP_INTERFACE)Context;
//
// Get the packet's total length.
//
NdisQueryPacket(
pNdisPacket,
NULL, // Phys buffer count
NULL, // Buffer count
NULL, // First Buffer
&TotalLength
);
//
// Note that we test for pInterface->pFlowInfoList BEFORE grabbing
// the interface lock -- this so that for the most common case of not
// having these preconfigured flows, we don't take the drastic action
// of taking the interface lock for each send packet! There is
// no harm in doing this check, as long as the pFlowInfo pointer we actually
// use is got AFTER taking the lock.
//
// TODO: perhaps get rid of this code altogether -- along with other code
// dealing with preconfigured flows.
//
pFlowInfo = pInterface->pFlowInfoList;
if (pFlowInfo)
{
AA_ACQUIRE_IF_LOCK(pInterface);
//
// Remember to reload pFlowInfo once we have the the lock.
//
for (pFlowInfo = pInterface->pFlowInfoList;
pFlowInfo != (PATMARP_FLOW_INFO)NULL;
pFlowInfo = pFlowInfo->pNextFlow)
{
if (TotalLength <= pFlowInfo->PacketSizeLimit)
{
break;
}
}
AA_RELEASE_IF_LOCK(pInterface);
}
if (pFlowInfo != (PATMARP_FLOW_INFO)NULL)
{
*ppFlowInfo = pFlowInfo;
*ppFlowSpec = &(pFlowInfo->FlowSpec);
*ppFilterSpec = &(pFlowInfo->FilterSpec);
}
else
{
#ifdef GPC
CLASSIFICATION_HANDLE ClassificationHandle;
ClassificationHandle = (CLASSIFICATION_HANDLE)
PtrToUlong(
NDIS_PER_PACKET_INFO_FROM_PACKET(pNdisPacket,
ClassificationHandlePacketInfo));
*ppFlowInfo = NULL;
if (ClassificationHandle){
GPC_STATUS GpcStatus;
AA_ASSERT(GpcGetCfInfoClientContext);
GpcStatus = GpcGetCfInfoClientContext(pAtmArpGlobalInfo->GpcClientHandle,
ClassificationHandle,
ppFlowInfo);
}
else{
#if 0
//
// THIS CODE HAS BEEN COMMENTED OUT SINCE
// WE ASSUME THAT CLASSIFICATION IS DONE IN
// TCP. IF WE DON'T GET A CH - THERE'S NOT MUCH POINT
// IN CALLING THE GPC AGAIN...
//
GPC_STATUS GpcStatus;
TC_INTERFACE_ID InterfaceId;
InterfaceId.InterfaceId = 0;
InterfaceId.LinkId = 0;
AA_ASSERT(GpcClassifyPacket);
GpcStatus = GpcClassifyPacket(
pAtmArpGlobalInfo->GpcClientHandle,
GPC_PROTOCOL_TEMPLATE_IP,
pNdisPacket,
0, // TransportHeaderOffset
&InterfaceId,
(PGPC_CLIENT_HANDLE)ppFlowInfo,
&ClassificationHandle
);
#endif
}
AA_CHECK_EXIT_IRQL(EntryIrq, ExitIrq);
if (*ppFlowInfo != NULL)
{
AA_ASSERT(*ppFlowInfo != NULL);
*ppFlowSpec = &((*ppFlowInfo)->FlowSpec);
*ppFilterSpec = &((*ppFlowInfo)->FilterSpec);
AADEBUGP(AAD_LOUD,
("ClassifyPacket: Pkt %x: pFlowInfo %x, pFlowSpec %x, SendBW %d, ServType %d\n",
pNdisPacket,
*ppFlowInfo,
*ppFlowSpec,
(*ppFlowSpec)->SendAvgBandwidth,
(*ppFlowSpec)->SendServiceType));
}
else
{
//*ppFlowInfo = NULL;
*ppFlowSpec = &(pInterface->DefaultFlowSpec);
*ppFilterSpec = &(pInterface->DefaultFilterSpec);
}
#else
*ppFlowInfo = NULL;
*ppFlowSpec = &(pInterface->DefaultFlowSpec);
*ppFilterSpec = &(pInterface->DefaultFilterSpec);
#endif // GPC
}
return;
}
BOOLEAN
AtmArpQosDoFlowsMatch(
IN PVOID Context,
IN PATMARP_FLOW_SPEC pFlowSpec,
IN PATMARP_FLOW_SPEC pTargetFlowSpec
)
/*++
Routine Description:
Check if a target flow spec supports the given flow spec. Currently,
we check only the bandwidth: if the target flow spec has a send bandwidth
greater than or equal to that of the given flow spec, we declare a match.
Arguments:
Context - Actually a pointer to an Interface structure
pFlowSpec - The given flow spec which we are trying to satisfy
pTargetFlowSpec - The candidate flow spec
Return Value:
TRUE iff the target flow spec matches the given flow spec.
--*/
{
return (
(pFlowSpec->SendServiceType == pTargetFlowSpec->SendServiceType)
&&
(pFlowSpec->SendPeakBandwidth <= pTargetFlowSpec->SendPeakBandwidth)
);
}
BOOLEAN
AtmArpQosDoFiltersMatch(
IN PVOID Context,
IN PATMARP_FILTER_SPEC pFilterSpec,
IN PATMARP_FILTER_SPEC pTargetFilterSpec
)
/*++
Routine Description:
Check if a target filter spec matches the given filter spec. Currently,
we always return TRUE.
Arguments:
Context - Actually a pointer to an Interface structure
pFilterSpec - The given filter spec which we are trying to satisfy
pTargetFilterSpec - The candidate filter spec
Return Value:
TRUE always.
--*/
{
return (TRUE);
}
#endif // QOS_HEURISTICS
#ifdef GPC
#define AA_GPC_COPY_FLOW_PARAMS(_pFlowInfo, _pQosInfo) \
{ \
(_pFlowInfo)->FlowSpec.SendAvgBandwidth = \
(_pQosInfo)->GenFlow.SendingFlowspec.TokenRate; \
(_pFlowInfo)->FlowSpec.SendPeakBandwidth = \
(_pQosInfo)->GenFlow.SendingFlowspec.PeakBandwidth; \
(_pFlowInfo)->FlowSpec.SendMaxSize = \
MAX((_pQosInfo)->GenFlow.SendingFlowspec.TokenBucketSize, \
(_pQosInfo)->GenFlow.SendingFlowspec.MaxSduSize); \
(_pFlowInfo)->PacketSizeLimit = (_pFlowInfo)->FlowSpec.SendMaxSize; \
(_pFlowInfo)->FlowSpec.ReceiveAvgBandwidth = \
(_pQosInfo)->GenFlow.ReceivingFlowspec.TokenRate; \
(_pFlowInfo)->FlowSpec.ReceivePeakBandwidth = \
(_pQosInfo)->GenFlow.ReceivingFlowspec.PeakBandwidth; \
(_pFlowInfo)->FlowSpec.ReceiveMaxSize = \
MAX((_pQosInfo)->GenFlow.ReceivingFlowspec.TokenBucketSize, \
(_pQosInfo)->GenFlow.ReceivingFlowspec.MaxSduSize); \
(_pFlowInfo)->FlowSpec.Encapsulation = ENCAPSULATION_TYPE_LLCSNAP; \
(_pFlowInfo)->FlowSpec.AgingTime = 0; \
(_pFlowInfo)->FlowSpec.SendServiceType = \
(_pQosInfo)->GenFlow.SendingFlowspec.ServiceType; \
(_pFlowInfo)->FlowSpec.ReceiveServiceType = \
(_pQosInfo)->GenFlow.ReceivingFlowspec.ServiceType; \
}
VOID
AtmArpGpcInitialize(
VOID
)
/*++
Routine Description:
Initialize with the Generic Packet Classifier. The GPC informs us of
newly created flows (e.g. via RSVP) and of flows being torn down.
For each flow, we keep context (ATMARP_FLOW_INFO) that keeps track of
the QoS needed for the flow. Each IP packet given to us for transmission
is classified into a flow, and we use this flow info to make VCs with
the appropriate characteristics.
Arguments:
None
Return Value:
None
--*/
{
GPC_STATUS GpcStatus;
ULONG ClassificationFamilyId;
ULONG Flags;
ULONG ProtocolTemplate;
ULONG MaxPriorities;
GPC_CLIENT_FUNC_LIST AtmArpFuncList;
GPC_CLIENT_HANDLE ClientContext;
//
// Initialize the GPC.
//
GpcStatus = GpcInitialize(&pAtmArpGlobalInfo->GpcCalls);
if (GpcStatus != GPC_STATUS_SUCCESS)
{
AADEBUGP(AAD_WARNING, ("GpcInitialize failed, status 0x%x\n", GpcStatus));
pAtmArpGlobalInfo->bGpcInitialized = FALSE;
return;
}
pAtmArpGlobalInfo->bGpcInitialized = TRUE;
AtmArpGpcClassifyPacketHandler = pAtmArpGlobalInfo->GpcCalls.GpcClassifyPacketHandler;
AtmArpGpcGetCfInfoClientContextHandler = pAtmArpGlobalInfo->GpcCalls.GpcGetCfInfoClientContextHandler;
ClassificationFamilyId = GPC_CF_QOS;
Flags = 0;
ProtocolTemplate = GPC_PROTOCOL_TEMPLATE_IP;
MaxPriorities = 1;
AA_SET_MEM(&AtmArpFuncList, 0, sizeof(AtmArpFuncList));
AtmArpFuncList.ClAddCfInfoCompleteHandler = AtmArpGpcAddCfInfoComplete;
AtmArpFuncList.ClAddCfInfoNotifyHandler = AtmArpGpcAddCfInfoNotify;
AtmArpFuncList.ClModifyCfInfoCompleteHandler = AtmArpGpcModifyCfInfoComplete;
AtmArpFuncList.ClModifyCfInfoNotifyHandler = AtmArpGpcModifyCfInfoNotify;
AtmArpFuncList.ClRemoveCfInfoCompleteHandler = AtmArpGpcRemoveCfInfoComplete;
AtmArpFuncList.ClGetCfInfoName = AtmArpGpcGetCfInfoName;
AtmArpFuncList.ClRemoveCfInfoNotifyHandler = AtmArpGpcRemoveCfInfoNotify;
ClientContext = (GPC_CLIENT_HANDLE)pAtmArpGlobalInfo;
GpcStatus = GpcRegisterClient(
ClassificationFamilyId,
Flags,
MaxPriorities,
&AtmArpFuncList,
ClientContext,
&(pAtmArpGlobalInfo->GpcClientHandle)
);
AADEBUGP(AAD_INFO,
("GpcRegisterClient status 0x%x, GpcClientHandle 0x%x\n",
GpcStatus, pAtmArpGlobalInfo->GpcClientHandle));
if(GpcStatus != GPC_STATUS_SUCCESS)
{
AA_ASSERT(FALSE);
pAtmArpGlobalInfo->bGpcInitialized = FALSE;
}
}
VOID
AtmArpGpcShutdown(
VOID
)
/*++
Routine Description:
Shuts down our GPC interface.
Arguments:
None
Return Value:
None
--*/
{
GPC_STATUS GpcStatus;
if (pAtmArpGlobalInfo->bGpcInitialized)
{
GpcStatus = GpcDeregisterClient(pAtmArpGlobalInfo->GpcClientHandle);
AA_ASSERT(GpcStatus == GPC_STATUS_SUCCESS);
}
}
VOID
AtmArpGpcAddCfInfoComplete(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext,
IN GPC_STATUS GpcStatus
)
/*++
Routine Description:
This is the entry point called by GPC when a pended call to
GpcAddCfInfo() has completed. Since we never call GpcAddCfInfo,
we should never be called here.
Arguments:
<Not used>
Return Value:
None
--*/
{
AA_ASSERT(FALSE);
}
GPC_STATUS
AtmArpGpcAddCfInfoNotify(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_HANDLE GpcCfInfoHandle,
IN ULONG CfInfoSize,
IN PVOID pCfInfo,
OUT PGPC_CLIENT_HANDLE pClientCfInfoContext
)
/*++
Routine Description:
This is the entry point called by GPC to notify us of creation of
a new INFO block of type QOS. We allocate a FLOW_INFO structure,
fill it with what we need, and return a pointer to it as our context.
Arguments:
ClientContext - Pointer to our global info struct
GpcCfInfoHandle - GPC Handle to use in all GPC APIs for this INFO block
CfInfoSize - Length of the following block
pCfInfo - Pointer to the newly created INFO block
pClientCfInfoContext- Place where we return our context for this block
Return Value:
GPC_STATUS_SUCCESS if we were able to allocate a new FLOW_INFO structure,
GPC_STATUS_RESOURCES otherwise.
--*/
{
PATMARP_FLOW_INFO pFlowInfo;
GPC_STATUS GpcStatus;
PCF_INFO_QOS pQosInfo;
pQosInfo = (PCF_INFO_QOS)pCfInfo;
//
// Initialize.
//
*pClientCfInfoContext = NULL;
do
{
GpcStatus = AtmArpGpcValidateCfInfo(pCfInfo, CfInfoSize);
if (GpcStatus != GPC_STATUS_SUCCESS)
{
break;
}
AA_ALLOC_MEM(pFlowInfo, ATMARP_FLOW_INFO, sizeof(ATMARP_FLOW_INFO));
if (pFlowInfo == NULL)
{
GpcStatus = GPC_STATUS_RESOURCES;
break;
}
AA_SET_MEM(pFlowInfo, 0, sizeof(ATMARP_FLOW_INFO));
pFlowInfo->CfInfoHandle = GpcCfInfoHandle;
//
// Copy in flow parameters
//
AA_GPC_COPY_FLOW_PARAMS(pFlowInfo, pQosInfo);
//
// Generate Unique Name for this flow.
// This name is based on the template, AA_FLOW_INSTANCE_TEMPLATE.
// The flow number part is based on a static variable which is
// InterlockIncremented each time a flowinfo is created.
//
{
static ULONG FlowCount = 0;
ULONG ThisFlow = NdisInterlockedIncrement(&FlowCount);
WCHAR *pwc;
AA_ASSERT(sizeof(pFlowInfo->FlowInstanceName)
== sizeof(AA_FLOW_INSTANCE_NAME_TEMPLATE)-sizeof(WCHAR));
AA_COPY_MEM(
pFlowInfo->FlowInstanceName,
AA_FLOW_INSTANCE_NAME_TEMPLATE,
sizeof(pFlowInfo->FlowInstanceName)
);
//
// We fill in the "flow number" field of the template, which
// is the 1st 8 characters, with the hex representation of
// ThisFlow. The LS digit is at offset 7.
//
pwc = pFlowInfo->FlowInstanceName+7;
AA_ASSERT(2*sizeof(ThisFlow) == 8);
while (ThisFlow)
{
ULONG u = ThisFlow & 0xf;
*pwc-- = (WCHAR) ((u < 10) ? (u + '0') : u + 'A' - 10);
ThisFlow >>= 4;
}
}
//
// Link it to the global flow list.
//
AA_ACQUIRE_GLOBAL_LOCK(pAtmArpGlobalInfo);
pFlowInfo->pPrevFlow = NULL;
pFlowInfo->pNextFlow = pAtmArpGlobalInfo->pFlowInfoList;
if (pAtmArpGlobalInfo->pFlowInfoList != NULL)
{
pAtmArpGlobalInfo->pFlowInfoList->pPrevFlow = pFlowInfo;
}
pAtmArpGlobalInfo->pFlowInfoList = pFlowInfo;
AA_RELEASE_GLOBAL_LOCK(pAtmArpGlobalInfo);
//
// Return our context for this flow.
//
*pClientCfInfoContext = (GPC_CLIENT_HANDLE)pFlowInfo;
GpcStatus = GPC_STATUS_SUCCESS;
break;
}
while (FALSE);
AADEBUGP(AAD_INFO, ("AddCfInfoNotify: pCfInfo x%x, ClientCtx x%x, ret x%x\n",
pCfInfo, *pClientCfInfoContext, GpcStatus));
#if DBG
if (GpcStatus == GPC_STATUS_SUCCESS)
{
AADEBUGP(AAD_INFO, (" : SendPeak %d, SendAvg %d, SendPktSize %d, ServType %d\n",
pFlowInfo->FlowSpec.SendPeakBandwidth,
pFlowInfo->FlowSpec.SendAvgBandwidth,
pFlowInfo->FlowSpec.SendMaxSize,
pFlowInfo->FlowSpec.SendServiceType));
AADEBUGP(AAD_INFO, (" : RecvPeak %d, RecvAvg %d, RecvPktSize %d, ServType %d\n",
pFlowInfo->FlowSpec.ReceivePeakBandwidth,
pFlowInfo->FlowSpec.ReceiveAvgBandwidth,
pFlowInfo->FlowSpec.ReceiveMaxSize,
pFlowInfo->FlowSpec.ReceiveServiceType));
}
#endif
return (GpcStatus);
}
VOID
AtmArpGpcModifyCfInfoComplete(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext,
IN GPC_STATUS GpcStatus
)
/*++
Routine Description:
This is the entry point called by GPC when a pended call to
GpcModifyCfInfo() has completed. Since we never call GpcModifyCfInfo,
we should never be called here.
Addendum: Apparently this is called even if another client calls
GpcModifyCfInfo, just to notify this client that the modify operation
finished.
Arguments:
<Not used>
Return Value:
None
--*/
{
return;
}
GPC_STATUS
AtmArpGpcModifyCfInfoNotify(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext,
IN ULONG CfInfoSize,
IN PVOID pNewCfInfo
)
/*++
Routine Description:
This is the entry point called by GPC when an existing flow has
been modified.
If the flow info for this flow is linked with a VC, we unlink it,
and start an aging timeout on the VC. We update the flow info structure
with this new information. The next packet that falls into this
classification will cause a new VC with updated QoS to be created.
Arguments:
ClientContext - Pointer to our global context
ClientCfInfoContext - Pointer to our FLOW INFO structure
CfInfoSize - Length of the following
pNewCfInfo - Updated flow info
Return Value:
GPC_STATUS_SUCCESS always.
--*/
{
PATMARP_FLOW_INFO pFlowInfo;
PATMARP_VC pVc;
GPC_STATUS GpcStatus;
PCF_INFO_QOS pQosInfo;
ULONG rc;
pQosInfo = (PCF_INFO_QOS)pNewCfInfo;
pFlowInfo = (PATMARP_FLOW_INFO)ClientCfInfoContext;
GpcStatus = GPC_STATUS_SUCCESS;
do
{
GpcStatus = AtmArpGpcValidateCfInfo(pNewCfInfo, CfInfoSize);
if (GpcStatus != GPC_STATUS_SUCCESS)
{
break;
}
pVc = (PATMARP_VC) InterlockedExchangePointer(
&(pFlowInfo->VcContext),
NULL
);
if (pVc == NULL_PATMARP_VC)
{
//
// This flow isn't associated with a VC.
//
break;
}
//
// Unlink the flow from the VC.
//
AA_ACQUIRE_VC_LOCK(pVc);
AA_ASSERT(pVc->FlowHandle == (PVOID)pFlowInfo);
pVc->FlowHandle = NULL;
rc = AtmArpDereferenceVc(pVc); // GPC Unlink flow info (modify)
if (rc != 0)
{
AA_SET_FLAG(pVc->Flags,
AA_VC_GPC_MASK,
AA_VC_GPC_IS_UNLINKED_FROM_FLOW);
//
// Age out this VC if it isn't aging out yet.
//
if (!AA_IS_TIMER_ACTIVE(&(pVc->Timer)))
{
AtmArpStartTimer(
pVc->pInterface,
&(pVc->Timer),
AtmArpVcAgingTimeout,
1, // Age out in 1 second
(PVOID)pVc
);
AtmArpReferenceVc(pVc); // GPC Flow remove decay timer ref
}
AA_RELEASE_VC_LOCK(pVc);
}
//
// else the VC is gone.
//
//
// Update the flow info.
//
AA_GPC_COPY_FLOW_PARAMS(pFlowInfo, pQosInfo);
break;
}
while (FALSE);
AADEBUGP(AAD_INFO, ("ModCfInfo: pFlowInfo x%x, VC x%x, New SendBW %d, SendPktSz %d\n",
pFlowInfo,
pFlowInfo->VcContext,
pFlowInfo->FlowSpec.SendAvgBandwidth,
pFlowInfo->FlowSpec.SendMaxSize));
return (GpcStatus);
}
VOID
AtmArpGpcRemoveCfInfoComplete(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext,
IN GPC_STATUS GpcStatus
)
/*++
Routine Description:
This is the entry point called by GPC when a pended call to
GpcRemoveCfInfo() has completed. Since we never call GpcRemoveCfInfo,
we should never be called here.
Arguments:
<Not used>
Return Value:
None
--*/
{
AA_ASSERT(FALSE);
}
GPC_STATUS
AtmArpGpcRemoveCfInfoNotify(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext
)
/*++
Routine Description:
This is the entry point called by GPC to notify us that a flow
is being removed. We locate our context for the flow, unlink
it from the ATM VC that carries the flow, and start aging
Arguments:
ClientContext - Pointer to our global context
ClientCfInfoContext - Pointer to our FLOW INFO structure
Return Value:
GPC_STATUS_SUCCESS always.
--*/
{
PATMARP_FLOW_INFO pFlowInfo;
PATMARP_VC pVc;
GPC_STATUS GpcStatus;
ULONG rc;
pFlowInfo = (PATMARP_FLOW_INFO)ClientCfInfoContext;
AADEBUGP(AAD_INFO, ("RemCfInfo: pFlowInfo x%x, VC x%x, SendBW %d, SendPktSz %d\n",
pFlowInfo,
pFlowInfo->VcContext,
pFlowInfo->FlowSpec.SendAvgBandwidth,
pFlowInfo->FlowSpec.SendMaxSize));
GpcStatus = GPC_STATUS_SUCCESS;
do
{
pVc = (PATMARP_VC) InterlockedExchangePointer(
&(pFlowInfo->VcContext),
NULL
);
if (pVc == NULL_PATMARP_VC)
{
//
// This flow isn't associated with a VC.
//
break;
}
//
// Unlink the flow from the VC.
//
AA_ACQUIRE_VC_LOCK(pVc);
AA_ASSERT(pVc->FlowHandle == (PVOID)pFlowInfo);
pVc->FlowHandle = NULL;
rc = AtmArpDereferenceVc(pVc); // GPC Unlink flow info (modify)
if (rc != 0)
{
AA_SET_FLAG(pVc->Flags,
AA_VC_GPC_MASK,
AA_VC_GPC_IS_UNLINKED_FROM_FLOW);
//
// Age out this VC if it isn't aging out yet.
//
if (!AA_IS_TIMER_ACTIVE(&(pVc->Timer)))
{
AtmArpStartTimer(
pVc->pInterface,
&(pVc->Timer),
AtmArpVcAgingTimeout,
1, // Age out in 1 second
(PVOID)pVc
);
AtmArpReferenceVc(pVc); // GPC Flow remove decay timer ref
}
AA_RELEASE_VC_LOCK(pVc);
}
//
// else the VC is gone.
//
break;
}
while (FALSE);
//
// Unlink this flow from the global list.
//
AA_ACQUIRE_GLOBAL_LOCK(pAtmArpGlobalInfo);
if (pFlowInfo->pNextFlow != NULL)
{
pFlowInfo->pNextFlow->pPrevFlow = pFlowInfo->pPrevFlow;
}
if (pFlowInfo->pPrevFlow != NULL)
{
pFlowInfo->pPrevFlow->pNextFlow = pFlowInfo->pNextFlow;
}
else
{
pAtmArpGlobalInfo->pFlowInfoList = pFlowInfo->pNextFlow;
}
AA_RELEASE_GLOBAL_LOCK(pAtmArpGlobalInfo);
//
// Delete this flow info structure.
//
AA_FREE_MEM(pFlowInfo);
return (GpcStatus);
}
GPC_STATUS
AtmArpValidateFlowSpec(
IN PATMARP_INTERFACE pInterface, LOCKIN LOCKOUT
IN FLOWSPEC * pFS,
IN BOOLEAN fSending
)
/*++
Routine Description:
Check the contents of a CF INFO structure that's been given to us.
Arguments:
pFS - The FLOWSPEC struct to check.
pInterface - Pointer to the interface (assumed to be locked).
fSending - if TRUE this is a sending flow otherwise it is a receiving
flow.
Return Value:
GPC_STATUS_SUCCESS if the structure is OK, error code otherwise.
--*/
{
/*
Here is the validation plan for the
fields of FLOWSPEC:
Ignored fields:
Latency
DelayVariation
If ServiceType == NO_TRAFFIC, we ignore all other fields.
Default handling
MinimumPolicedSize: ignored
TokenRate: BE:line-rate; GS:invalid CLS: invalid
TokenBucketSize: MTU
PeakBandwidth: line-rate
ServiceType:BE
MaxSduSize: MTU
Valid ranges
MinimumPolicedSize <= MTU
0<TokenRate <= LineRate
0<TokenBucketSize
0<TokenRate <= PeakBandwidth
ServiceType: valid type
0<MaxSduSize <= MTU
MaxSduSize <= TokenBucketSize
*/
GPC_STATUS Status = GPC_STATUS_SUCCESS;
do
{
ULONG MTU = pInterface->pAdapter->MaxPacketSize;
UINT LineRate = (fSending)
? pInterface->pAdapter->LineRate.Outbound
: pInterface->pAdapter->LineRate.Inbound;
//
// Check service types.
//
switch(pFS->ServiceType)
{
case SERVICETYPE_GUARANTEED: // fall through
case SERVICETYPE_CONTROLLEDLOAD:
if (pFS->TokenRate == QOS_NOT_SPECIFIED)
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: Token rate U for ST G/CL. ST=0x%lx\n",
pFS->ServiceType));
Status = QOS_STATUS_INVALID_TOKEN_RATE;
// Status = GPC_STATUS_INVALID_PARAMETER;
}
break;
case SERVICETYPE_NOTRAFFIC: // fall through
case SERVICETYPE_BESTEFFORT: // fall through
case QOS_NOT_SPECIFIED:
break;
default:
// Status = GPC_STATUS_INVALID_PARAMETER;
Status = QOS_STATUS_INVALID_SERVICE_TYPE;
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: Unknown ST 0x%lx\n", pFS->ServiceType));
break;
}
if (Status != GPC_STATUS_SUCCESS)
{
break;
}
//
// If service type is notraffic, we ignore all other parameters...
//
if (pFS->ServiceType == SERVICETYPE_NOTRAFFIC)
{
break;
}
//
// Check that non-default values fall into valid ranges...
//
#define EXCEEDSMAX(_value,_max) \
((_value) != QOS_NOT_SPECIFIED && (_value) > (_max))
if (EXCEEDSMAX(pFS->MinimumPolicedSize, MTU))
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: MinPolSz(%lu)>MTU(%lu)\n",
pFS->MinimumPolicedSize,
MTU));
Status = GPC_STATUS_RESOURCES;
break;
}
if (EXCEEDSMAX(pFS->TokenRate, LineRate))
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: TokRt(%lu)>LineRt(%lu)\n",
pFS->TokenRate,
LineRate));
Status = QOS_STATUS_INVALID_TOKEN_RATE;
// Status = GPC_STATUS_RESOURCES;
break;
}
if (EXCEEDSMAX(pFS->TokenRate, pFS->PeakBandwidth))
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: TokRt(%lu)>PkBw(%lu)\n",
pFS->TokenRate,
pFS->PeakBandwidth));
//
// 3/15/1999 JosephJ: According to EricEil, in this condition
// we should return INVALID_PEAK_RATE, not
// INVALID_TOKEN_RATE
//
Status = QOS_STATUS_INVALID_PEAK_RATE;
break;
}
if (EXCEEDSMAX(pFS->MaxSduSize, MTU))
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: MaxSduSz(%lu)>MTU(%lu)\n",
pFS->MaxSduSize,
MTU));
Status = GPC_STATUS_RESOURCES;
break;
}
if (EXCEEDSMAX(pFS->MaxSduSize, pFS->TokenBucketSize))
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: MaxSduSz(%lu)>TokBktSz(%lu)\n",
pFS->MaxSduSize,
pFS->TokenBucketSize));
Status = GPC_STATUS_INVALID_PARAMETER;
break;
}
if (
pFS->TokenRate==0
|| pFS->TokenBucketSize==0
|| pFS->MaxSduSize==0)
{
AADEBUGP(AAD_INFO,
("GpcValidateCfInfo: FAIL: !TokRt || !TokBktSz || !MaxSduSz\n"));
if (pFS->TokenRate == 0)
{
Status = QOS_STATUS_INVALID_TOKEN_RATE;
}
else
{
Status = GPC_STATUS_INVALID_PARAMETER;
}
break;
}
} while (FALSE);
return Status;
}
GPC_STATUS
AtmArpGpcValidateCfInfo(
IN PVOID pCfInfo,
IN ULONG CfInfoSize
)
/*++
Routine Description:
Check the contents of a CF INFO structure that's been given to us.
Arguments:
pCfInfo - Pointer to the newly created INFO block
CfInfoSize - Length of the above
Return Value:
GPC_STATUS_SUCCESS if the structure is OK, error code otherwise.
--*/
{
GPC_STATUS GpcStatus;
PCF_INFO_QOS pQosInfo;
PATMARP_INTERFACE pInterface;
pQosInfo = (PCF_INFO_QOS)pCfInfo;
GpcStatus = GPC_STATUS_SUCCESS;
do
{
if(CfInfoSize < (FIELD_OFFSET(CF_INFO_QOS, GenFlow) +
FIELD_OFFSET(TC_GEN_FLOW, TcObjects)))
{
GpcStatus = GPC_STATUS_INVALID_PARAMETER;
break;
}
#ifdef ATMARP_WMI
//
// Check that both recv and send servicetypes are not both notraffic
//
if ( pQosInfo->GenFlow.ReceivingFlowspec.ServiceType==SERVICETYPE_NOTRAFFIC
&& pQosInfo->GenFlow.SendingFlowspec.ServiceType==SERVICETYPE_NOTRAFFIC)
{
GpcStatus = GPC_STATUS_INVALID_PARAMETER;
break;
}
//
// Check if this notification is actually for us.
//
pInterface = AtmArpWmiGetIfByName(
(PWSTR)&pQosInfo->InstanceName[0],
pQosInfo->InstanceNameLength
);
if (pInterface != NULL_PATMARP_INTERFACE)
{
AA_ACQUIRE_IF_LOCK(pInterface);
if (pInterface->AdminState != IF_STATUS_UP)
{
//
// Oh oh -- interface is not up and about....
//
AtmArpDereferenceInterface(pInterface); // WMI: Tmp ref.
AA_RELEASE_IF_LOCK(pInterface);
pInterface = NULL;
}
}
if (pInterface == NULL_PATMARP_INTERFACE)
{
AADEBUGP(AAD_WARNING,
("GpcValidateCfInfo: pQosInfo 0x%x, unknown instance name %ws\n",
pQosInfo, pQosInfo->InstanceName));
GpcStatus = GPC_STATUS_IGNORED;
break;
}
//
// We have the interface lock -- don't break without releasing it first!
//
GpcStatus = AtmArpValidateFlowSpec(
pInterface,
&(pQosInfo->GenFlow.ReceivingFlowspec),
FALSE
);
if (GpcStatus == GPC_STATUS_SUCCESS)
{
GpcStatus = AtmArpValidateFlowSpec(
pInterface,
&(pQosInfo->GenFlow.SendingFlowspec),
TRUE
);
}
AtmArpDereferenceInterface(pInterface); // WMI: Tmp ref.
AA_RELEASE_IF_LOCK(pInterface);
#endif // ATMARP_WMI
break;
}
while (FALSE);
return (GpcStatus);
}
EXTERN
GPC_STATUS
AtmArpGpcGetCfInfoName(
IN GPC_CLIENT_HANDLE ClientContext,
IN GPC_CLIENT_HANDLE ClientCfInfoContext,
OUT PNDIS_STRING InstanceName
)
/*++
Routine Description:
The GPC can issue this call to get from us the WMI manageable
InstanceName which Ndis created for the flow associated with
the CfInfo struct.
We guarantee to keep the string buffer around until the CfInfo
structure is removed.
Arguments:
ClientContext - Client context supplied to GpcRegisterClient
ClientCfInfoContext - Client's CfInfo context
InstanceName - We return a pointer to our string.
Return Value:
Status
--*/
{
PATMARP_FLOW_INFO pFlowInfo = (PATMARP_FLOW_INFO)ClientCfInfoContext;
InstanceName->Buffer = pFlowInfo->FlowInstanceName;
InstanceName->Length = sizeof(pFlowInfo->FlowInstanceName);
InstanceName->MaximumLength = sizeof(pFlowInfo->FlowInstanceName);
return NDIS_STATUS_SUCCESS;
}
#endif // GPC
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