615 lines
17 KiB
C
615 lines
17 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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nbfpnp.c
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Abstract:
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This module contains code which allocates and initializes all data
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structures needed to activate a plug and play binding. It also informs
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tdi (and thus nbf clients) of new devices and protocol addresses.
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Author:
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Jim McNelis (jimmcn) 1-Jan-1996
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#ifdef RASAUTODIAL
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LONG NumberOfBinds = 0;
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VOID
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NbfAcdBind();
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VOID
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NbfAcdUnbind();
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#endif // RASAUTODIAL
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// PnP-Power Declarations
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VOID
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NbfPnPEventDispatch(
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IN PVOID NetPnPEvent
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);
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VOID
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NbfPnPEventComplete(
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IN PNET_PNP_EVENT NetPnPEvent,
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IN NTSTATUS retVal
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);
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NTSTATUS
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NbfPnPBindsComplete(
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IN PDEVICE_CONTEXT DeviceContext,
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IN PNET_PNP_EVENT NetPnPEvent
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);
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// PnP Handler Routines
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VOID
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NbfProtocolBindAdapter(
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OUT PNDIS_STATUS NdisStatus,
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IN NDIS_HANDLE BindContext,
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IN PNDIS_STRING DeviceName,
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IN PVOID SystemSpecific1,
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IN PVOID SystemSpecific2
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)
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/*++
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Routine Description:
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This routine activates a transport binding and exposes the new device
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and associated addresses to transport clients. This is done by reading
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the registry, and performing any one time initialization of the transport
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and then natching the device to bind to with the linkage information from
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the registry. If we have a match for that device the bind will be
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performed.
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Arguments:
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NdisStatus - The status of the bind.
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BindContext - A context used for NdisCompleteBindAdapter() if
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STATUS_PENDING is returned.
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DeviceName - The name of the device that we are binding with.
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SystemSpecific1 - Unused (a pointer to an NDIS_STRING to use with
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NdisOpenProtocolConfiguration. This is not used by nbf
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since there is no adapter specific information when
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configuring the protocol via the registry. Passed to
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NbfInitializeOneDeviceContext for possible future use)
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SystemSpecific2 - Passed to NbfInitializeOneDeviceContext to be used
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in a call to TdiRegisterNetAddress
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Return Value:
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None.
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--*/
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{
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PUNICODE_STRING ExportName;
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UNICODE_STRING ExportString;
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ULONG i, j, k;
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NTSTATUS status;
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#if DBG
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// We can never be called at DISPATCH or above
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if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
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{
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DbgBreakPoint();
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}
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#endif
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint1 ("ENTER NbfProtocolBindAdapter for %S\n", DeviceName->Buffer);
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}
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if (NbfConfig == NULL) {
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//
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// This allocates the CONFIG_DATA structure and returns
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// it in NbfConfig.
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//
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status = NbfConfigureTransport(&NbfRegistryPath, &NbfConfig);
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if (!NT_SUCCESS (status)) {
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PANIC (" Failed to initialize transport, Nbf binding failed.\n");
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*NdisStatus = NDIS_STATUS_RESOURCES;
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return;
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}
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#if DBG
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//
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// Allocate the debugging tables.
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//
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NbfConnectionTable = (PVOID *)ExAllocatePoolWithTag(NonPagedPool,
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sizeof(PVOID) *
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(NbfConfig->InitConnections + 2 +
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NbfConfig->InitRequests + 2 +
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NbfConfig->InitUIFrames + 2 +
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NbfConfig->InitPackets + 2 +
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NbfConfig->InitLinks + 2 +
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NbfConfig->InitAddressFiles + 2 +
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NbfConfig->InitAddresses + 2),
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NBF_MEM_TAG_CONNECTION_TABLE);
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ASSERT (NbfConnectionTable);
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NbfRequestTable = NbfConnectionTable + (NbfConfig->InitConnections + 2);
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NbfUiFrameTable = NbfRequestTable + (NbfConfig->InitRequests + 2);
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NbfSendPacketTable = NbfUiFrameTable + (NbfConfig->InitUIFrames + 2);
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NbfLinkTable = NbfSendPacketTable + (NbfConfig->InitPackets + 2);
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NbfAddressFileTable = NbfLinkTable + (NbfConfig->InitLinks + 2);
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NbfAddressTable = NbfAddressFileTable +
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(NbfConfig->InitAddressFiles + 2);
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#endif
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}
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//
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// Loop through all the adapters that are in the configuration
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// information structure (this is the initial cache) until we
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// find the one that NDIS is calling Protocol bind adapter for.
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//
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for (j = 0; j < NbfConfig->NumAdapters; j++ ) {
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if (NdisEqualString(DeviceName, &NbfConfig->Names[j], TRUE)) {
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break;
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}
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}
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if (j < NbfConfig->NumAdapters) {
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// We found the bind to export mapping in initial cache
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ExportName = &NbfConfig->Names[NbfConfig->DevicesOffset + j];
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}
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else {
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint1("\nNot In Initial Cache = %08x\n\n", DeviceName->Buffer);
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NbfPrint0("Bind Names in Initial Cache: \n");
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for (k = 0; k < NbfConfig->NumAdapters; k++)
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{
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NbfPrint3("Config[%2d]: @ %08x, %75S\n",
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k, &NbfConfig->Names[k],
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NbfConfig->Names[k].Buffer);
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}
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NbfPrint0("Export Names in Initial Cache: \n");
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for (k = 0; k < NbfConfig->NumAdapters; k++)
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{
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NbfPrint3("Config[%2d]: @ %08x, %75S\n",
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k, &NbfConfig->Names[NbfConfig->DevicesOffset + k],
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NbfConfig->Names[NbfConfig->DevicesOffset + k].Buffer);
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}
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NbfPrint0("\n\n");
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}
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ExportName = &ExportString;
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//
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// We have not found the name in the initial registry info;
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// Read the registry and check if a new binding appeared...
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//
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*NdisStatus = NbfGetExportNameFromRegistry(&NbfRegistryPath,
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DeviceName,
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ExportName
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);
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if (!NT_SUCCESS (*NdisStatus))
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{
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return;
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}
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}
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NbfInitializeOneDeviceContext(NdisStatus,
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NbfDriverObject,
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NbfConfig,
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DeviceName,
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ExportName,
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SystemSpecific1,
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SystemSpecific2
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);
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// Check if we need to de-allocate the ExportName buffer
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if (ExportName == &ExportString)
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{
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ExFreePool(ExportName->Buffer);
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}
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if (*NdisStatus == NDIS_STATUS_SUCCESS) {
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if (InterlockedIncrement(&NumberOfBinds) == 1) {
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#ifdef RASAUTODIAL
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//
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// This is the first successful open.
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//
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#if DBG
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DbgPrint("Calling NbfAcdBind()\n");
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#endif
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//
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// Get the automatic connection driver entry points.
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//
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NbfAcdBind();
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#endif // RASAUTODIAL
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}
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}
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint2 ("LEAVE NbfProtocolBindAdapter for %S with Status %08x\n",
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DeviceName->Buffer, *NdisStatus);
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}
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return;
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}
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VOID
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NbfProtocolUnbindAdapter(
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OUT PNDIS_STATUS NdisStatus,
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IN NDIS_HANDLE ProtocolBindContext,
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IN PNDIS_HANDLE UnbindContext
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)
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/*++
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Routine Description:
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This routine deactivates a transport binding. Before it does this, it
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indicates to all clients above, that the device is going away. Clients
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are expected to close all open handles to the device.
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Then the device is pulled out of the list of NBF devices, and all
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resources reclaimed. Any connections, address files etc, that the
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client has cleaned up are forcibly cleaned out at this point. Any
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outstanding requests are completed (with a status). Any future
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requests are automatically invalid as they use obsolete handles.
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Arguments:
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NdisStatus - The status of the bind.
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ProtocolBindContext - the context from the openadapter call
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UnbindContext - A context for async unbinds.
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Return Value:
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None.
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--*/
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{
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PDEVICE_CONTEXT DeviceContext;
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PTP_ADDRESS Address;
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NTSTATUS status;
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KIRQL oldirql;
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PLIST_ENTRY p;
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#if DBG
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// We can never be called at DISPATCH or above
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if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
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{
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DbgBreakPoint();
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}
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#endif
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// Get the device context for the adapter being unbound
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DeviceContext = (PDEVICE_CONTEXT) ProtocolBindContext;
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint1 ("ENTER NbfProtocolUnbindAdapter for %S\n", DeviceContext->DeviceName);
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}
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// Remove creation ref if it has not already been removed,
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// after telling TDI and its clients that we'r going away.
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// This flag also helps prevent any more TDI indications
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// of deregister addr/devobj - after the 1st one succeeds.
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if (InterlockedExchange(&DeviceContext->CreateRefRemoved, TRUE) == FALSE) {
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// Assume upper layers clean up by closing connections
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// when we deregister all addresses and device object,
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// but this can happen asynchronously, after we return
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// from the (asynchronous) TdiDeregister.. calls below
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// Inform TDI by deregistering the reserved netbios address
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*NdisStatus = TdiDeregisterNetAddress(DeviceContext->ReservedAddressHandle);
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if (!NT_SUCCESS (*NdisStatus)) {
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint1("No success deregistering this address,STATUS = %08X\n",*NdisStatus);
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}
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// this can never happen
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ASSERT(FALSE);
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// In case it happens, this allows a redo of the unbind
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DeviceContext->CreateRefRemoved = FALSE;
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return;
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}
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// Inform TDI (and its clients) that device is going away
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*NdisStatus = TdiDeregisterDeviceObject(DeviceContext->TdiDeviceHandle);
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if (!NT_SUCCESS (*NdisStatus)) {
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IF_NBFDBG (NBF_DEBUG_PNP) {
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NbfPrint1("No success deregistering device object,STATUS = %08X\n",*NdisStatus);
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}
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// This can never happen
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ASSERT(FALSE);
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// In case it happens, this allows a redo of the unbind
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DeviceContext->CreateRefRemoved = FALSE;
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return;
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}
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// Clear away the association with the underlying PDO object
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DeviceContext->PnPContext = NULL;
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// Stop all the internal timers - this'll clear timer refs
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NbfStopTimerSystem(DeviceContext);
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// Cleanup the Ndis Binding as it is not useful on return
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// from this function - do not try to use it after this
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NbfCloseNdis(DeviceContext);
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// BUG BUG -- probable race condition with timer callbacks
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// Do we wait for some time in case a timer func gets in ?
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// Removing creation reference means that once all handles
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// r closed,device will automatically be garbage-collected
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NbfDereferenceDeviceContext ("Unload", DeviceContext, DCREF_CREATION);
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if (InterlockedDecrement(&NumberOfBinds) == 0) {
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#ifdef RASAUTODIAL
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//
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// This is a successful close of last adapter
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//
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#if DBG
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DbgPrint("Calling NbfAcdUnbind()\n");
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#endif
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//
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// Unbind from the automatic connection driver.
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//
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NbfAcdUnbind();
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#endif // RASAUTODIAL
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}
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}
|
||
|
|
else {
|
||
|
|
|
||
|
|
// Ignore any duplicate Unbind Indications from NDIS layer
|
||
|
|
*NdisStatus = NDIS_STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
IF_NBFDBG (NBF_DEBUG_PNP) {
|
||
|
|
NbfPrint2 ("LEAVE NbfProtocolUnbindAdapter for %S with Status %08x\n",
|
||
|
|
DeviceContext->DeviceName, *NdisStatus);
|
||
|
|
}
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
NDIS_STATUS
|
||
|
|
NbfProtocolPnPEventHandler(
|
||
|
|
IN NDIS_HANDLE ProtocolBindContext,
|
||
|
|
IN PNET_PNP_EVENT NetPnPEvent
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine queues a work item to invoke the actual PnP
|
||
|
|
event dispatcher. This asyncronous mechanism is to allow
|
||
|
|
NDIS to signal PnP events to other bindings in parallel.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
ProtocolBindContext - the context from the openadapter call
|
||
|
|
|
||
|
|
NetPnPEvent - kind of PnP event and its parameters
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
STATUS_PENDING (or) an error code
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
PNET_PNP_EVENT_RESERVED NetPnPReserved;
|
||
|
|
PWORK_QUEUE_ITEM PnPWorkItem;
|
||
|
|
|
||
|
|
PnPWorkItem = (PWORK_QUEUE_ITEM)ExAllocatePoolWithTag(
|
||
|
|
NonPagedPool,
|
||
|
|
sizeof (WORK_QUEUE_ITEM),
|
||
|
|
NBF_MEM_TAG_WORK_ITEM);
|
||
|
|
|
||
|
|
if (PnPWorkItem == NULL)
|
||
|
|
{
|
||
|
|
return NDIS_STATUS_RESOURCES;
|
||
|
|
}
|
||
|
|
|
||
|
|
NetPnPReserved = (PNET_PNP_EVENT_RESERVED)NetPnPEvent->TransportReserved;
|
||
|
|
NetPnPReserved->PnPWorkItem = PnPWorkItem;
|
||
|
|
NetPnPReserved->DeviceContext = (PDEVICE_CONTEXT) ProtocolBindContext;
|
||
|
|
|
||
|
|
ExInitializeWorkItem(
|
||
|
|
PnPWorkItem,
|
||
|
|
NbfPnPEventDispatch,
|
||
|
|
NetPnPEvent);
|
||
|
|
|
||
|
|
ExQueueWorkItem(PnPWorkItem, CriticalWorkQueue);
|
||
|
|
|
||
|
|
return NDIS_STATUS_PENDING;
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
NbfPnPEventDispatch(
|
||
|
|
IN PVOID NetPnPEvent
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine dispatches all PnP events for the NBF transport.
|
||
|
|
The event is dispatched to the proper PnP event handler, and
|
||
|
|
the events are indicated to the transport clients using TDI.
|
||
|
|
|
||
|
|
These PnP events can trigger state changes that affect the
|
||
|
|
device behavior ( like transitioning to low power state ).
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
NetPnPEvent - kind of PnP event and its parameters
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
None
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
PNET_PNP_EVENT_RESERVED NetPnPReserved;
|
||
|
|
PDEVICE_CONTEXT DeviceContext;
|
||
|
|
UNICODE_STRING DeviceString;
|
||
|
|
PTDI_PNP_CONTEXT tdiPnPContext1;
|
||
|
|
PTDI_PNP_CONTEXT tdiPnPContext2;
|
||
|
|
NDIS_STATUS retVal;
|
||
|
|
|
||
|
|
// Retrieve the transport information block in event
|
||
|
|
NetPnPReserved = (PNET_PNP_EVENT_RESERVED)((PNET_PNP_EVENT)NetPnPEvent)->TransportReserved;
|
||
|
|
|
||
|
|
// Free the memory allocated for this work item itself
|
||
|
|
ExFreePool(NetPnPReserved->PnPWorkItem);
|
||
|
|
|
||
|
|
// Get the device context for the adapter being unbound
|
||
|
|
DeviceContext = NetPnPReserved->DeviceContext;
|
||
|
|
|
||
|
|
// In case everything goes ok, we return an NDIS_SUCCESS
|
||
|
|
retVal = STATUS_SUCCESS;
|
||
|
|
|
||
|
|
// Dispatch the PnP Event to the appropriate PnP handler
|
||
|
|
switch (((PNET_PNP_EVENT)NetPnPEvent)->NetEvent)
|
||
|
|
{
|
||
|
|
case NetEventReconfigure:
|
||
|
|
case NetEventCancelRemoveDevice:
|
||
|
|
case NetEventQueryRemoveDevice:
|
||
|
|
case NetEventQueryPower:
|
||
|
|
case NetEventSetPower:
|
||
|
|
case NetEventPnPCapabilities:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case NetEventBindsComplete:
|
||
|
|
retVal = NbfPnPBindsComplete(DeviceContext, NetPnPEvent);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
ASSERT( FALSE );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( retVal == STATUS_SUCCESS )
|
||
|
|
{
|
||
|
|
if (DeviceContext != NULL)
|
||
|
|
{
|
||
|
|
RtlInitUnicodeString(&DeviceString, DeviceContext->DeviceName);
|
||
|
|
tdiPnPContext1 = tdiPnPContext2 = NULL;
|
||
|
|
|
||
|
|
// Notify our TDI clients about this PNP event
|
||
|
|
retVal = TdiPnPPowerRequest(&DeviceString,
|
||
|
|
NetPnPEvent,
|
||
|
|
tdiPnPContext1,
|
||
|
|
tdiPnPContext2,
|
||
|
|
NbfPnPEventComplete);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (retVal != STATUS_PENDING)
|
||
|
|
{
|
||
|
|
NdisCompletePnPEvent(retVal, (NDIS_HANDLE)DeviceContext, NetPnPEvent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// PnP Complete Handler
|
||
|
|
//
|
||
|
|
VOID
|
||
|
|
NbfPnPEventComplete(
|
||
|
|
IN PNET_PNP_EVENT NetPnPEvent,
|
||
|
|
IN NTSTATUS retVal
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PNET_PNP_EVENT_RESERVED NetPnPReserved;
|
||
|
|
PDEVICE_CONTEXT DeviceContext;
|
||
|
|
|
||
|
|
// Retrieve the transport information block in event
|
||
|
|
NetPnPReserved = (PNET_PNP_EVENT_RESERVED)NetPnPEvent->TransportReserved;
|
||
|
|
|
||
|
|
// Get the device context for the adapter being unbound
|
||
|
|
DeviceContext = NetPnPReserved->DeviceContext;
|
||
|
|
|
||
|
|
NdisCompletePnPEvent(retVal, (NDIS_HANDLE)DeviceContext, NetPnPEvent);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// PnP Handler Dispatches
|
||
|
|
//
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
NbfPnPBindsComplete(
|
||
|
|
IN PDEVICE_CONTEXT DeviceContext,
|
||
|
|
IN PNET_PNP_EVENT NetPnPEvent
|
||
|
|
)
|
||
|
|
{
|
||
|
|
NDIS_STATUS retVal;
|
||
|
|
|
||
|
|
ASSERT(DeviceContext == NULL);
|
||
|
|
|
||
|
|
retVal = TdiProviderReady(NbfProviderHandle);
|
||
|
|
|
||
|
|
ASSERT(retVal == STATUS_SUCCESS);
|
||
|
|
|
||
|
|
return retVal;
|
||
|
|
}
|
||
|
|
|