hubtunnel.cpp File Reference

#include "usbhub3.h"
#include <debug.h>

Include dependency graph for hubtunnel.cpp:

Go to the source code of this file.

Classes
struct	HubUsb4Host
struct	HubUsb4TargetContext
struct	HubUsb4OpenContext

Macros
#define	NDEBUG
#define	HUB_USB4_REFERENCE_PREFIX   L"Usb4-Host-Interface-"
#define	HUB_USB4_REFERENCE_PREFIX_CHARS   20
#define	HUB_USB4_REFERENCE_CHARS   256
#define	HUB_USB4_FIELD_SEPARATOR   L'^'
#define	HUB_USB4_LINK_CHARS   256
#define	HUB_USB4_OPEN_NAME_CHARS   256
#define	HUB_USB4_HOST_INDEX_MASK   0x07
#define	HUB_USB4_NO_HOST   0x07
#define	HUB_USB4_DVSEC_NAME_CHARS   20
#define	HUB_USB4_MAPPING_EXTRA_BYTES   14

Enumerations
enum class	HubUsb4TargetState : ULONG {   Idle , Opening , Open , Closing ,   Closed }

Functions
	WDF_DECLARE_CONTEXT_TYPE_WITH_NAME (HubUsb4TargetContext, HubUsb4GetTargetContext)
	WDF_DECLARE_CONTEXT_TYPE_WITH_NAME (HubUsb4OpenContext, HubUsb4GetOpenContext)
	_IRQL_requires_ (PASSIVE_LEVEL) NTSTATUS NTAPI HubUsb4BindPort(_In_ HubFdo *Hub
	Marks Port as tunneled through the host router Name; ports naming the same host share one record.
static HubUsb4Host *NTAPI	HubUsb4HostAt (_In_ HubFdo *Hub, _In_ ULONG Index)
static HubUsb4Host *NTAPI	HubUsb4FindHost (_In_ HubFdo *Hub, _In_ PCUNICODE_STRING Name)
static VOID NTAPI	HubUsb4EscapeName (_In_ WDFSTRING Name)
	if (!NT_SUCCESS(Status))
	RtlZeroMemory (Host, sizeof(*Host))
	HubUsb4GetTargetContext (Host->Target) -> Hub=Hub
	PAGED_CODE ()
	if (!Hub->m_HasUsb4Ports)
	HubUsb4EscapeName (Name)
	WdfStringGetUnicodeString (Name, &Text)
	if (Host==NULL)
Port	SetFlag (PortFlag::Usb4Host)
	DPRINT ("Port %u belongs to USB4 host %wZ\n", Port->Number(), &Text)
static VOID NTAPI	HubUsb4AddPowerRelation (_In_ HubFdo *Hub, _In_ HubUsb4Host *Host)
static VOID NTAPI	HubUsb4InvalidatePowerRelations (_In_ HubFdo *Hub)
static VOID NTAPI	HubUsb4RemovePowerRelation (_In_ HubFdo *Hub, _In_ HubUsb4Host *Host)
BOOLEAN NTAPI	HubUsb4NeedsHostPower (_In_ HubChild *Child)
static NTSTATUS NTAPI	HubUsb4TargetQueryRemove (_In_ WDFIOTARGET Target)
static VOID NTAPI	HubUsb4TargetRemoveCanceled (_In_ WDFIOTARGET Target)
static VOID NTAPI	HubUsb4TargetRemoveComplete (_In_ WDFIOTARGET Target)
static VOID NTAPI	HubUsb4OpenWorkItem (_In_ WDFWORKITEM WorkItem)
	if ((SymbolicLink->Length &1) !=0||SymbolicLink->Length > SymbolicLink->MaximumLength||(SymbolicLink->Buffer==NULL &&SymbolicLink->Length !=0))
else	if (Chars >=HUB_USB4_LINK_CHARS)
	WdfWorkItemEnqueue (WorkItem)
	DPRINT1 ("Hub %p USB4 host symbolic link %wZ not copied 0x%lx\n", Hub, SymbolicLink, Status)
	WdfObjectDelete (WorkItem)
static NTSTATUS NTAPI	HubUsb4InterfaceChange (_In_ PVOID NotificationStructure, _Inout_opt_ PVOID Context)
	A host router's power PDO came or went; its reference string picks the record by ACPI path or DVSEC name.

Variables
static const GUID	HubUsb4PowerPdoInterface
static const DEVPROPKEY	HubKeyUsb4PortMappings
static const DEVPROPKEY	HubKeyPciSerialNumber
static const DEVPROPKEY	HubKeyPciUsb4PortAttributes
static DRIVER_NOTIFICATION_CALLBACK_ROUTINE	HubUsb4InterfaceChange
static EVT_WDF_WORKITEM	HubUsb4OpenWorkItem
static EVT_WDF_IO_TARGET_QUERY_REMOVE	HubUsb4TargetQueryRemove
static EVT_WDF_IO_TARGET_REMOVE_CANCELED	HubUsb4TargetRemoveCanceled
static EVT_WDF_IO_TARGET_REMOVE_COMPLETE	HubUsb4TargetRemoveComplete
_In_ WDFSTRING	Name
HubUsb4Host *	Host = HubUsb4FindHost(Hub, &Text)
WDFMEMORY	Memory
NTSTATUS	Status = WdfMemoryCreate(&Attributes, NonPagedPool, HUB_TAG_HUB, sizeof(*Host), &Memory, (PVOID*)&Host)
WDF_OBJECT_ATTRIBUTES_INIT &	Attributes
Attributes	ParentObject = Hub->m_Device
return	STATUS_SUCCESS
Failed	__pad0__
_In_ HubPort *	Port
Port	m_Usb4HostName = Name
_In_ HubUsb4Host _In_ PCUNICODE_STRING	SymbolicLink
HubUsb4OpenContext *	Open = HubUsb4GetOpenContext(WorkItem)
WDFWORKITEM	WorkItem
ULONG	Chars = SymbolicLink->Length / sizeof(WCHAR)
WDF_WORKITEM_CONFIG_INIT &	Config
Config	AutomaticSerialization = TRUE
	else
	return
Failed	__pad1__
Host	State = HubUsb4TargetState::Idle

Macro Definition Documentation

HUB_USB4_DVSEC_NAME_CHARS

#define HUB_USB4_DVSEC_NAME_CHARS   20

Definition at line 40 of file hubtunnel.cpp.

HUB_USB4_FIELD_SEPARATOR

#define HUB_USB4_FIELD_SEPARATOR   L'^'

Definition at line 31 of file hubtunnel.cpp.

HUB_USB4_HOST_INDEX_MASK

#define HUB_USB4_HOST_INDEX_MASK   0x07

Definition at line 38 of file hubtunnel.cpp.

HUB_USB4_LINK_CHARS

#define HUB_USB4_LINK_CHARS   256

Definition at line 34 of file hubtunnel.cpp.

HUB_USB4_MAPPING_EXTRA_BYTES

#define HUB_USB4_MAPPING_EXTRA_BYTES   14

Definition at line 43 of file hubtunnel.cpp.

HUB_USB4_NO_HOST

#define HUB_USB4_NO_HOST   0x07

Definition at line 39 of file hubtunnel.cpp.

HUB_USB4_OPEN_NAME_CHARS

#define HUB_USB4_OPEN_NAME_CHARS   256

Definition at line 35 of file hubtunnel.cpp.

HUB_USB4_REFERENCE_CHARS

#define HUB_USB4_REFERENCE_CHARS   256

Definition at line 30 of file hubtunnel.cpp.

HUB_USB4_REFERENCE_PREFIX

#define HUB_USB4_REFERENCE_PREFIX   L"Usb4-Host-Interface-"

Definition at line 28 of file hubtunnel.cpp.

HUB_USB4_REFERENCE_PREFIX_CHARS

#define HUB_USB4_REFERENCE_PREFIX_CHARS   20

Definition at line 29 of file hubtunnel.cpp.

NDEBUG

#define NDEBUG

Definition at line 10 of file hubtunnel.cpp.

Enumeration Type Documentation

HubUsb4TargetState

enum class HubUsb4TargetState : ULONG

strong

Lifecycle of the remote target on a host router's power PDO.

Enumerator
Idle
Opening
Open
Closing
Closed

Definition at line 46 of file hubtunnel.cpp.

{
    Idle,
    Opening,
    Open,
    Closing,
    Closed
};

Function Documentation

_IRQL_requires_()

_IRQL_requires_

(

PASSIVE_LEVEL

)

Marks Port as tunneled through the host router Name; ports naming the same host share one record.

Sends a synchronous IOCTL to the specified device object.

Publishes "<port>#<host>" for every bound port on the hub's PDO. QUIRK: with no bound port an older value is left in place.

Binds USB 3 ports to the host routers named by the USB4 DVSEC; an earlier ACPI mapping wins.

Definition at line 96 of file hubtunnel.cpp.

{
    WDF_OBJECT_ATTRIBUTES Attributes;
    NTSTATUS Status;
 
    PAGED_CODE();
 
    WDF_OBJECT_ATTRIBUTES_INIT(&Attributes);
    Attributes.ParentObject = Hub->m_Device;
 
    Status = WdfCollectionCreate(&Attributes, &Hub->m_Usb4Hosts);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Hub %p USB4 host list not created 0x%lx\n", Hub, Status);
        return Status;
    }
 
    Status = WdfWaitLockCreate(&Attributes, &Hub->m_Usb4HostsLock);
    if (!NT_SUCCESS(Status))
        DPRINT1("Hub %p USB4 host list lock not created 0x%lx\n", Hub, Status);
 
    return Status;
}

DPRINT()

DPRINT	(	"Port %u belongs to USB4 host %wZ\n"	,
		Port->	Number(),
		&	Text
	)

DPRINT1()

DPRINT1	(	"Hub %p USB4 host symbolic link %wZ not copied 0x%lx\n"	,
		Hub	,
		SymbolicLink	,
		Status
	)

HubUsb4AddPowerRelation()

static VOID NTAPI HubUsb4AddPowerRelation ( _In_ HubFdo *  Hub, _In_ HubUsb4Host *  Host  )

static

Definition at line 552 of file hubtunnel.cpp.

{
    DPRINT("Hub %p would depend on USB4 host router PDO %p; PoFx component relations are not available\n",
           Hub, Host->PowerPdo);
}

HubUsb4EscapeName() [1/2]

static VOID NTAPI HubUsb4EscapeName ( _In_ WDFSTRING  Name )

static

Definition at line 186 of file hubtunnel.cpp.

{
    UNICODE_STRING Text;
    ULONG Index;
 
    WdfStringGetUnicodeString(Name, &Text);
 
    for (Index = 0; Index < Text.Length / sizeof(WCHAR); Index++)
    {
        if (Text.Buffer[Index] == L'\\' || Text.Buffer[Index] == L'/' || Text.Buffer[Index] == HUB_USB4_FIELD_SEPARATOR)
            Text.Buffer[Index] = L'#';
    }
}

HubUsb4EscapeName() [2/2]

HubUsb4EscapeName

(

Name

)

HubUsb4FindHost()

static HubUsb4Host *NTAPI HubUsb4FindHost ( _In_ HubFdo *  Hub, _In_ PCUNICODE_STRING  Name  )

static

Definition at line 143 of file hubtunnel.cpp.

{
    UNICODE_STRING HostName;
    HubUsb4Host* Host;
    ULONG Count = WdfCollectionGetCount(Hub->m_Usb4Hosts);
    ULONG Index;
 
    for (Index = 0; Index < Count; Index++)
    {
        Host = HubUsb4HostAt(Hub, Index);
        if (Host == NULL)
            break;
 
        WdfStringGetUnicodeString(Host->Name, &HostName);
        if (RtlEqualUnicodeString(&HostName, Name, TRUE))
            return Host;
    }
 
    return NULL;
}

Referenced by HubUsb4InterfaceChange().

HubUsb4GetTargetContext()

HubUsb4GetTargetContext

(

Host->

Target

)

-> Hub=Hub

Referenced by HubUsb4OpenWorkItem(), and HubUsb4TargetRemoveComplete().

HubUsb4HostAt()

static HubUsb4Host *NTAPI HubUsb4HostAt ( _In_ HubFdo *  Hub, _In_ ULONG  Index  )

static

Definition at line 127 of file hubtunnel.cpp.

{
    WDFOBJECT Item = WdfCollectionGetItem(Hub->m_Usb4Hosts, Index);
 
    if (Item == NULL)
        return NULL;
 
    return (HubUsb4Host*)WdfMemoryGetBuffer((WDFMEMORY)Item, NULL);
}

Referenced by HubUsb4FindHost().

HubUsb4InterfaceChange()

static NTSTATUS NTAPI HubUsb4InterfaceChange ( _In_ PVOID  NotificationStructure, _Inout_opt_ PVOID  Context  )

static

A host router's power PDO came or went; its reference string picks the record by ACPI path or DVSEC name.

Definition at line 888 of file hubtunnel.cpp.

{
    PDEVICE_INTERFACE_CHANGE_NOTIFICATION Change = (PDEVICE_INTERFACE_CHANGE_NOTIFICATION)NotificationStructure;
    HubFdo* Hub = HubFdo::FromDevice((WDFDEVICE)Context);
    WCHAR Reference[HUB_USB4_REFERENCE_CHARS];
    UNICODE_STRING AcpiName;
    UNICODE_STRING DvsecName;
    HubUsb4Host* Host = NULL;
    PWCHAR AcpiField;
    PWCHAR DvsecField = NULL;
    PWCHAR Mark;
    DEVPROPTYPE Type;
    ULONG Required;
    BOOLEAN Open = FALSE;
    NTSTATUS Status;
 
    PAGED_CODE();
 
    if (!IsEqualGUID(Change->InterfaceClassGuid, HubUsb4PowerPdoInterface))
    {
        DPRINT("Hub %p ignores an interface change of another class\n", Hub);
        return STATUS_SUCCESS;
    }
 
    if (HubDriver.GetInterfaceProperty == NULL)
    {
        DPRINT1("Hub %p cannot read USB4 power interface properties on this kernel\n", Hub);
        return STATUS_SUCCESS;
    }
 
    Status = HubDriver.GetInterfaceProperty(Change->SymbolicLinkName,
                                            &DEVPKEY_DeviceInterface_ReferenceString,
                                            LOCALE_NEUTRAL,
                                            0,
                                            sizeof(Reference),
                                            Reference,
                                            &Required,
                                            &Type);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Hub %p USB4 power interface reference string query failed 0x%lx\n", Hub, Status);
        return STATUS_SUCCESS;
    }
 
    if (Type != DEVPROP_TYPE_STRING)
    {
        DPRINT1("Hub %p USB4 power interface reference string has type 0x%lx\n", Hub, Type);
        return STATUS_SUCCESS;
    }
 
    Reference[RTL_NUMBER_OF(Reference) - 1] = UNICODE_NULL;
 
    if (_wcsnicmp(Reference, HUB_USB4_REFERENCE_PREFIX, HUB_USB4_REFERENCE_PREFIX_CHARS) != 0)
    {
        DPRINT1("Hub %p USB4 power interface has an invalid reference string %ws\n", Hub, Reference);
        return STATUS_SUCCESS;
    }
 
    Mark = wcschr(&Reference[HUB_USB4_REFERENCE_PREFIX_CHARS], HUB_USB4_FIELD_SEPARATOR);
    if (Mark == NULL)
    {
        DPRINT1("Hub %p USB4 power interface reference string %ws has no fields\n", Hub, Reference);
        return STATUS_SUCCESS;
    }
 
    AcpiField = Mark + 1;
    Mark = wcschr(AcpiField, HUB_USB4_FIELD_SEPARATOR);
    if (Mark != NULL)
    {
        *Mark = UNICODE_NULL;
        DvsecField = Mark + 1;
 
        Mark = wcschr(DvsecField, HUB_USB4_FIELD_SEPARATOR);
        if (Mark != NULL)
            *Mark = UNICODE_NULL;
    }
 
    RtlInitUnicodeString(&AcpiName, AcpiField);
 
    {
        HubWaitLockGuard Guard(Hub->m_Usb4HostsLock);
 
        if (AcpiName.Length != 0)
            Host = HubUsb4FindHost(Hub, &AcpiName);
 
        if (Host == NULL && DvsecField != NULL)
        {
            RtlInitUnicodeString(&DvsecName, DvsecField);
            Host = HubUsb4FindHost(Hub, &DvsecName);
        }
    }
 
    if (Host == NULL)
    {
        DPRINT1("Hub %p has no USB4 host for %ws\n", Hub, Reference);
        return STATUS_SUCCESS;
    }
 
    /* Removal is handled by the target's remove callbacks */
    if (!IsEqualGUID(Change->Event, GUID_DEVICE_INTERFACE_ARRIVAL))
    {
        DPRINT("Hub %p USB4 host %p power interface removed\n", Hub, Host);
        return STATUS_SUCCESS;
    }
 
    DPRINT("Hub %p USB4 host %p power interface arrived\n", Hub, Host);
 
    {
        HubWaitLockGuard Guard(Host->Lock);
 
        if (Host->State == HubUsb4TargetState::Idle || Host->State == HubUsb4TargetState::Closed)
        {
            Host->State = HubUsb4TargetState::Opening;
            Open = TRUE;
        }
    }
 
    if (Open)
        HubUsb4QueueOpen(Hub, Host, Change->SymbolicLinkName);
 
    return STATUS_SUCCESS;
}

HubUsb4InvalidatePowerRelations()

static VOID NTAPI HubUsb4InvalidatePowerRelations ( _In_ HubFdo *  Hub )

static

Definition at line 563 of file hubtunnel.cpp.

{
    DPRINT("Hub %p power relations are not reported\n", Hub);
}

Referenced by HubUsb4TargetRemoveComplete().

HubUsb4NeedsHostPower()

BOOLEAN NTAPI HubUsb4NeedsHostPower

(

_In_ HubChild *

Child

)

A device behind a USB4 port holds its host router powered while tunneled or not known yet.

Definition at line 587 of file hubtunnel.cpp.

{
    return Child->m_Port->HasFlag(PortFlag::Usb4Host) &&
           (Child->m_TunnelState == HUB_TUNNEL_STATE_TUNNELED ||
            Child->m_TunnelState == HUB_TUNNEL_STATE_UNKNOWN);
}

HubUsb4OpenWorkItem()

static VOID NTAPI HubUsb4OpenWorkItem ( _In_ WDFWORKITEM  WorkItem )

static

Definition at line 760 of file hubtunnel.cpp.

{
    HubUsb4OpenContext* Open = HubUsb4GetOpenContext(WorkItem);
    HubFdo* Hub = HubFdo::FromDevice((WDFDEVICE)WdfWorkItemGetParentObject(WorkItem));
    HubUsb4Host* Host = Open->Host;
    WCHAR Buffer[HUB_USB4_OPEN_NAME_CHARS];
    WDF_IO_TARGET_OPEN_PARAMS Params;
    UNICODE_STRING Name;
    NTSTATUS Status;
 
    RtlInitEmptyUnicodeString(&Name, Buffer, sizeof(Buffer));
    Status = RtlUnicodeStringPrintf(&Name, L"%wsUSB-%p", Open->SymbolicLink, Hub);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Hub %p USB4 host target name not formatted 0x%lx\n", Hub, Status);
        goto Failed;
    }
 
    WDF_IO_TARGET_OPEN_PARAMS_INIT_OPEN_BY_NAME(&Params, &Name, FILE_READ_DATA);
    Params.ShareAccess = FILE_SHARE_READ;
    Params.CreateOptions = FILE_NON_DIRECTORY_FILE;
    Params.EvtIoTargetQueryRemove = HubUsb4TargetQueryRemove;
    Params.EvtIoTargetRemoveCanceled = HubUsb4TargetRemoveCanceled;
    Params.EvtIoTargetRemoveComplete = HubUsb4TargetRemoveComplete;
 
    Status = WdfIoTargetOpen(Host->Target, &Params);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Hub %p USB4 host target %wZ not opened 0x%lx\n", Hub, &Name, Status);
        goto Failed;
    }
 
    {
        HubWaitLockGuard ListGuard(Hub->m_Usb4HostsLock);
        HubWaitLockGuard HostGuard(Host->Lock);
 
        if (Host->State == HubUsb4TargetState::Opening)
            Host->State = HubUsb4TargetState::Open;
 
        Host->PowerPdo = WdfIoTargetWdmGetTargetPhysicalDevice(Host->Target);
        HubUsb4GetTargetContext(Host->Target)->Host = Host;
    }
 
    HubUsb4UpdatePowerRelations(Hub, Host);
 
    DPRINT("Hub %p opened USB4 host target %wZ, PDO %p\n", Hub, &Name, Host->PowerPdo);
    WdfObjectDelete(WorkItem);
    return;
 
Failed:
    {
        HubWaitLockGuard Guard(Host->Lock);
        Host->State = HubUsb4TargetState::Idle;
    }
 
    WdfObjectDelete(WorkItem);
}

HubUsb4RemovePowerRelation()

static VOID NTAPI HubUsb4RemovePowerRelation ( _In_ HubFdo *  Hub, _In_ HubUsb4Host *  Host  )

static

Definition at line 573 of file hubtunnel.cpp.

{
    if (!Host->RelationAdded)
        return;
 
    DPRINT("Hub %p drops its dependency on USB4 host router PDO %p\n", Hub, Host->PowerPdo);
    Host->RelationAdded = FALSE;
}

HubUsb4TargetQueryRemove()

static NTSTATUS NTAPI HubUsb4TargetQueryRemove ( _In_ WDFIOTARGET  Target )

static

Definition at line 719 of file hubtunnel.cpp.

{
    DPRINT("USB4 host target %p query remove\n", Target);
    WdfIoTargetCloseForQueryRemove(Target);
    return STATUS_SUCCESS;
}

HubUsb4TargetRemoveCanceled()

static VOID NTAPI HubUsb4TargetRemoveCanceled ( _In_ WDFIOTARGET  Target )

static

Definition at line 731 of file hubtunnel.cpp.

{
    DPRINT("USB4 host target %p remove canceled\n", Target);
}

HubUsb4TargetRemoveComplete()

static VOID NTAPI HubUsb4TargetRemoveComplete ( _In_ WDFIOTARGET  Target )

static

Definition at line 740 of file hubtunnel.cpp.

{
    HubUsb4TargetContext* Context = HubUsb4GetTargetContext(Target);
    HubFdo* Hub = Context->Hub;
 
    DPRINT("USB4 host target %p removed\n", Target);
 
    {
        HubWaitLockGuard Guard(Hub->m_Usb4HostsLock);
        HubUsb4CloseHost(Context);
    }
 
    HubUsb4InvalidatePowerRelations(Hub);
}

if() [1/5]

if

(

!Hub->

m_HasUsb4Ports

)

Definition at line 288 of file hubtunnel.cpp.

    {
        DPRINT("Hub %p has ports behind a USB4 host router\n", Hub);
        Hub->m_HasUsb4Ports = TRUE;
    }

if() [2/5]

if

(

!

NT_SUCCESSStatus

)

Definition at line 219 of file hubtunnel.cpp.

    {
        DPRINT1("Hub %p USB4 host record not created 0x%lx\n", Hub, Status);
        return Status;
    }

if() [3/5]

if	(	(SymbolicLink->Length &1) !	= 0 || SymbolicLink->Length,
		SymbolicLink->MaximumLength||	SymbolicLink->Buffer==NULL &&SymbolicLink->Length !=0
	)

Definition at line 853 of file hubtunnel.cpp.

    {
        Status = STATUS_INVALID_PARAMETER;
    }

if() [4/5]

else if

(

Chars >=

HUB_USB4_LINK_CHARS

)

Definition at line 859 of file hubtunnel.cpp.

    {
        Status = STATUS_BUFFER_OVERFLOW;
    }

if() [5/5]

if

(

Host

= = NULL

)

Definition at line 302 of file hubtunnel.cpp.

    {
        Status = HubUsb4CreateHost(Hub, Name);
        if (!NT_SUCCESS(Status))
            return Status;
    }

PAGED_CODE()

PAGED_CODE

(

)

Referenced by _IRQL_requires_(), and HubUsb4InterfaceChange().

RtlZeroMemory()

RtlZeroMemory	(	Host	,
		sizeof *	Host
	)

SetFlag()

Port SetFlag

(

PortFlag::Usb4Host

)

WDF_DECLARE_CONTEXT_TYPE_WITH_NAME() [1/2]

WDF_DECLARE_CONTEXT_TYPE_WITH_NAME	(	HubUsb4OpenContext	,
		HubUsb4GetOpenContext
	)

WDF_DECLARE_CONTEXT_TYPE_WITH_NAME() [2/2]

WDF_DECLARE_CONTEXT_TYPE_WITH_NAME	(	HubUsb4TargetContext	,
		HubUsb4GetTargetContext
	)

WdfObjectDelete()

WdfObjectDelete

(

WorkItem

)

Referenced by HubUsb4OpenWorkItem().

WdfStringGetUnicodeString()

WdfStringGetUnicodeString	(	Name	,
		&	Text
	)

Referenced by HubUsb4EscapeName(), and HubUsb4FindHost().

WdfWorkItemEnqueue()

WdfWorkItemEnqueue

(

WorkItem

)

Referenced by _IRQL_requires_max_(), DeviceErrorHandlerForMmc(), XhciTransferRing::EnsureFreeSegments(), HDA_TransferCodecVerbs(), HDAGraphicsPowerInterfaceCallback(), HubCreateReport(), HubPdoPowerIrpComplete(), IdleMachine::QueueIdleWorkItem(), XhciUsbDevice::QueueTunnelStateDsm(), XhciCommonBuffer::Rebalance(), SequentialQueueEvtIoDeviceControl(), SequentialQueueEvtIoReadWrite(), and XhciRequeueEvents().

Variable Documentation

__pad0__

Failed __pad0__

Definition at line 264 of file hubtunnel.cpp.

__pad1__

Failed __pad1__

Definition at line 874 of file hubtunnel.cpp.

Attributes

WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE& Attributes

Definition at line 215 of file hubtunnel.cpp.

Referenced by _IRQL_requires_().

AutomaticSerialization

Config AutomaticSerialization = TRUE

Definition at line 837 of file hubtunnel.cpp.

Chars

Chars = SymbolicLink->Length / sizeof(WCHAR)

Definition at line 833 of file hubtunnel.cpp.

Referenced by CheckStringBufferA(), CheckStringBufferW(), ComputeUnicodeNameLength(), ConioProcessKey(), DisplayPendingOps(), DriverEntry(), GenerateComputerName(), HaliQueryProcessorBrandString(), HubDescCheckSerialNumber(), HubPdoGetHubName(), libxmlCharacters(), PiPropGetInterfaceReference(), PiPropIsValidString(), PiPropIsValidStringList(), PiPropParseInterfaceName(), RtlDetermineDosPathNameType_Ustr(), and TestFindCharInUnicodeString().

Config

WDF_WORKITEM_CONFIG_INIT& Config

Definition at line 836 of file hubtunnel.cpp.

else

else

Initial value:

{
        RtlCopyMemory(Open->SymbolicLink, SymbolicLink->Buffer, SymbolicLink->Length)

Definition at line 863 of file hubtunnel.cpp.

Host

Open Host = HubUsb4FindHost(Hub, &Text)

Definition at line 211 of file hubtunnel.cpp.

Referenced by DECLARE_INTERFACE_(), HubUsb4AddPowerRelation(), HubUsb4FindHost(), HubUsb4InterfaceChange(), HubUsb4OpenWorkItem(), HubUsb4RemovePowerRelation(), ShowTcpTable(), and ShowUdpTable().

HubKeyPciSerialNumber

const DEVPROPKEY HubKeyPciSerialNumber

static

Initial value:

=
    { { 0x3ab22e31, 0x8264, 0x4b4e, { 0x9a, 0xf5, 0xa8, 0xd2, 0xd8, 0xe3, 0x3e, 0x62 } }, 40 }

Definition at line 22 of file hubtunnel.cpp.

HubKeyPciUsb4PortAttributes

const DEVPROPKEY HubKeyPciUsb4PortAttributes

static

Initial value:

=
    { { 0x3ab22e31, 0x8264, 0x4b4e, { 0x9a, 0xf5, 0xa8, 0xd2, 0xd8, 0xe3, 0x3e, 0x62 } }, 42 }

Definition at line 24 of file hubtunnel.cpp.

HubKeyUsb4PortMappings

const DEVPROPKEY HubKeyUsb4PortMappings

static

Initial value:

=
    { { 0xb5a825b8, 0x3907, 0x40b5, { 0xab, 0xca, 0x84, 0x51, 0xe2, 0x45, 0x3d, 0x5f } }, 1 }

Definition at line 18 of file hubtunnel.cpp.

HubUsb4InterfaceChange

DRIVER_NOTIFICATION_CALLBACK_ROUTINE HubUsb4InterfaceChange

static

Definition at line 88 of file hubtunnel.cpp.

HubUsb4OpenWorkItem

EVT_WDF_WORKITEM HubUsb4OpenWorkItem

static

Definition at line 89 of file hubtunnel.cpp.

HubUsb4PowerPdoInterface

const GUID HubUsb4PowerPdoInterface

static

Initial value:

=
    { 0x9c0d3eae, 0xfba6, 0x4e08, { 0x9e, 0x8d, 0x18, 0x1c, 0xbb, 0x39, 0x97, 0xd6 } }

Definition at line 14 of file hubtunnel.cpp.

Referenced by HubUsb4InterfaceChange().

HubUsb4TargetQueryRemove

EVT_WDF_IO_TARGET_QUERY_REMOVE HubUsb4TargetQueryRemove

static

Definition at line 90 of file hubtunnel.cpp.

Referenced by HubUsb4OpenWorkItem().

HubUsb4TargetRemoveCanceled

EVT_WDF_IO_TARGET_REMOVE_CANCELED HubUsb4TargetRemoveCanceled

static

Definition at line 91 of file hubtunnel.cpp.

Referenced by HubUsb4OpenWorkItem().

HubUsb4TargetRemoveComplete

EVT_WDF_IO_TARGET_REMOVE_COMPLETE HubUsb4TargetRemoveComplete

static

Definition at line 92 of file hubtunnel.cpp.

Referenced by HubUsb4OpenWorkItem().

m_Usb4HostName

Port m_Usb4HostName = Name

Definition at line 309 of file hubtunnel.cpp.

Memory

WDFMEMORY Memory

Definition at line 212 of file hubtunnel.cpp.

Name

_In_ HubPort _In_ WDFSTRING Name

Initial value:

{
    WDF_OBJECT_ATTRIBUTES Attributes

Definition at line 208 of file hubtunnel.cpp.

Referenced by HubUsb4EscapeName(), HubUsb4FindHost(), HubUsb4OpenWorkItem(), and if().

Open

int Open = HubUsb4GetOpenContext(WorkItem)

Definition at line 831 of file hubtunnel.cpp.

Referenced by HubUsb4InterfaceChange(), and HubUsb4OpenWorkItem().

ParentObject

Attributes ParentObject = Hub->m_Device

Definition at line 216 of file hubtunnel.cpp.

Port

_In_ HubPort* Port

Definition at line 278 of file hubtunnel.cpp.

return

return

Definition at line 868 of file hubtunnel.cpp.

State

Host State = HubUsb4TargetState::Idle

Definition at line 876 of file hubtunnel.cpp.

Status

Status = WdfMemoryCreate(&Attributes, NonPagedPool, HUB_TAG_HUB, sizeof(*Host), &Memory, (PVOID*)&Host)

Definition at line 213 of file hubtunnel.cpp.

Referenced by _IRQL_requires_(), HubUsb4InterfaceChange(), HubUsb4OpenWorkItem(), and if().

STATUS_SUCCESS

return STATUS_SUCCESS

Definition at line 262 of file hubtunnel.cpp.

Referenced by HubUsb4InterfaceChange(), and HubUsb4TargetQueryRemove().

SymbolicLink

Open SymbolicLink

Initial value:

{
    WDF_WORKITEM_CONFIG Config

Definition at line 827 of file hubtunnel.cpp.

WorkItem

WDFWORKITEM WorkItem

Definition at line 832 of file hubtunnel.cpp.