/*++ Copyright (c) 1992-2000 Microsoft Corporation Module Name: miniport.c Abstract: Ndis Intermediate Miniport driver sample. This is a passthru driver. Author: Environment: Revision History: --*/ #include "precomp.h" #pragma hdrstop NDIS_STATUS MPInitialize( OUT PNDIS_STATUS OpenErrorStatus, OUT PUINT SelectedMediumIndex, IN PNDIS_MEDIUM MediumArray, IN UINT MediumArraySize, IN NDIS_HANDLE MiniportAdapterHandle, IN NDIS_HANDLE WrapperConfigurationContext ) /*++ Routine Description: This is the initialize handler which gets called as a result of the BindAdapter handler calling NdisIMInitializeDeviceInstanceEx. The context parameter which we pass there is the adapter structure which we retrieve here. Arguments: OpenErrorStatus Not used by us. SelectedMediumIndex Place-holder for what media we are using MediumArray Array of ndis media passed down to us to pick from MediumArraySize Size of the array MiniportAdapterHandle The handle NDIS uses to refer to us WrapperConfigurationContext For use by NdisOpenConfiguration Return Value: NDIS_STATUS_SUCCESS unless something goes wrong --*/ { UINT i; PADAPT pAdapt; NDIS_STATUS Status = NDIS_STATUS_FAILURE; NDIS_MEDIUM Medium; do { // // Start off by retrieving our adapter context and storing // the Miniport handle in it. // pAdapt = NdisIMGetDeviceContext(MiniportAdapterHandle); pAdapt->MiniportHandle = MiniportAdapterHandle; DBGPRINT(("==> Miniport Initialize: Adapt %p\n", pAdapt)); // // Usually we export the medium type of the adapter below as our // virtual miniport's medium type. However if the adapter below us // is a WAN device, then we claim to be of medium type 802.3. // Medium = pAdapt->Medium; if (Medium == NdisMediumWan) { Medium = NdisMedium802_3; } for (i = 0; i < MediumArraySize; i++) { if (MediumArray[i] == Medium) { *SelectedMediumIndex = i; break; } } if (i == MediumArraySize) { Status = NDIS_STATUS_UNSUPPORTED_MEDIA; break; } // // Set the attributes now. NDIS_ATTRIBUTE_DESERIALIZE enables us // to make up-calls to NDIS without having to call NdisIMSwitchToMiniport // or NdisIMQueueCallBack. This also forces us to protect our data using // spinlocks where appropriate. Also in this case NDIS does not queue // packets on our behalf. Since this is a very simple pass-thru // miniport, we do not have a need to protect anything. However in // a general case there will be a need to use per-adapter spin-locks // for the packet queues at the very least. // NdisMSetAttributesEx(MiniportAdapterHandle, pAdapt, 0, // CheckForHangTimeInSeconds NDIS_ATTRIBUTE_IGNORE_PACKET_TIMEOUT | NDIS_ATTRIBUTE_IGNORE_REQUEST_TIMEOUT| NDIS_ATTRIBUTE_INTERMEDIATE_DRIVER | NDIS_ATTRIBUTE_DESERIALIZE | NDIS_ATTRIBUTE_NO_HALT_ON_SUSPEND, 0); // // Initialize LastIndicatedStatus to be NDIS_STATUS_MEDIA_CONNECT // pAdapt->LastIndicatedStatus = NDIS_STATUS_MEDIA_CONNECT; // // Initialize the power states for both the lower binding (PTDeviceState) // and our miniport edge to Powered On. // pAdapt->MPDeviceState = NdisDeviceStateD0; pAdapt->PTDeviceState = NdisDeviceStateD0; // // Add this adapter to the global pAdapt List // NdisAcquireSpinLock(&GlobalLock); pAdapt->Next = pAdaptList; pAdaptList = pAdapt; NdisReleaseSpinLock(&GlobalLock); // // Create an ioctl interface // (VOID)PtRegisterDevice(); Status = NDIS_STATUS_SUCCESS; } while (FALSE); // // If we had received an UnbindAdapter notification on the underlying // adapter, we would have blocked that thread waiting for the IM Init // process to complete. Wake up any such thread. // ASSERT(pAdapt->MiniportInitPending == TRUE); pAdapt->MiniportInitPending = FALSE; NdisSetEvent(&pAdapt->MiniportInitEvent); DBGPRINT(("<== Miniport Initialize: Adapt %p, Status %x\n", pAdapt, Status)); return Status; } NDIS_STATUS MPSend( IN NDIS_HANDLE MiniportAdapterContext, IN PNDIS_PACKET Packet, IN UINT Flags ) /*++ Routine Description: Send Packet handler. Either this or our SendPackets (array) handler is called based on which one is enabled in our Miniport Characteristics. Arguments: MiniportAdapterContext Pointer to the adapter Packet Packet to send Flags Unused, passed down below Return Value: Return code from NdisSend --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status; PNDIS_PACKET MyPacket; PVOID MediaSpecificInfo = NULL; ULONG MediaSpecificInfoSize = 0; #ifdef NDIS51 // // Use NDIS 5.1 packet stacking: // { PNDIS_PACKET_STACK pStack; BOOLEAN Remaining; // // Packet stacks: Check if we can use the same packet for sending down. // pStack = NdisIMGetCurrentPacketStack(Packet, &Remaining); if (Remaining) { // // We can reuse "Packet". // // NOTE: if we needed to keep per-packet information in packets // sent down, we can use pStack->IMReserved[]. // ASSERT(pStack); NdisSend(&Status, pAdapt->BindingHandle, Packet); return(Status); } } #endif // NDIS51 // // We are either not using packet stacks, or there isn't stack space // in the original packet passed down to us. Allocate a new packet // to wrap the data with. // NdisAllocatePacket(&Status, &MyPacket, pAdapt->SendPacketPoolHandle); if (Status == NDIS_STATUS_SUCCESS) { PSEND_RSVD SendRsvd; // // Save a pointer to the original packet in our reserved // area in the new packet. This is needed so that we can // get back to the original packet when the new packet's send // is completed. // SendRsvd = (PSEND_RSVD)(MyPacket->ProtocolReserved); SendRsvd->OriginalPkt = Packet; MyPacket->Private.Flags = Flags; // // Set up the new packet so that it describes the same // data as the original packet. // MyPacket->Private.Head = Packet->Private.Head; MyPacket->Private.Tail = Packet->Private.Tail; #ifdef WIN9X // // Work around the fact that NDIS does not initialize this // to FALSE on Win9x. // MyPacket->Private.ValidCounts = FALSE; #endif // // Copy the OOB Offset from the original packet to the new // packet. // NdisMoveMemory(NDIS_OOB_DATA_FROM_PACKET(MyPacket), NDIS_OOB_DATA_FROM_PACKET(Packet), sizeof(NDIS_PACKET_OOB_DATA)); #ifndef WIN9X // // Copy the right parts of per packet info into the new packet. // This API is not available on Win9x since task offload is // not supported on that platform. // NdisIMCopySendPerPacketInfo(MyPacket, Packet); #endif // // Copy the Media specific information // NDIS_GET_PACKET_MEDIA_SPECIFIC_INFO(Packet, &MediaSpecificInfo, &MediaSpecificInfoSize); if (MediaSpecificInfo || MediaSpecificInfoSize) { NDIS_SET_PACKET_MEDIA_SPECIFIC_INFO(MyPacket, MediaSpecificInfo, MediaSpecificInfoSize); } NdisSend(&Status, pAdapt->BindingHandle, MyPacket); if (Status != NDIS_STATUS_PENDING) { #ifndef WIN9X NdisIMCopySendCompletePerPacketInfo (Packet, MyPacket); #endif NdisFreePacket(MyPacket); } } else { // // We are out of packets. Silently drop it. Alternatively we can deal with it: // - By keeping separate send and receive pools // - Dynamically allocate more pools as needed and free them when not needed // } return(Status); } VOID MPSendPackets( IN NDIS_HANDLE MiniportAdapterContext, IN PPNDIS_PACKET PacketArray, IN UINT NumberOfPackets ) /*++ Routine Description: Send Packet Array handler. Either this or our SendPacket handler is called based on which one is enabled in our Miniport Characteristics. Arguments: MiniportAdapterContext Pointer to our adapter PacketArray Set of packets to send NumberOfPackets Self-explanatory Return Value: None --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status; UINT i; PVOID MediaSpecificInfo = NULL; UINT MediaSpecificInfoSize = 0; for (i = 0; i < NumberOfPackets; i++) { PNDIS_PACKET Packet, MyPacket; Packet = PacketArray[i]; #ifdef NDIS51 // // Use NDIS 5.1 packet stacking: // { PNDIS_PACKET_STACK pStack; BOOLEAN Remaining; // // Packet stacks: Check if we can use the same packet for sending down. // pStack = NdisIMGetCurrentPacketStack(Packet, &Remaining); if (Remaining) { // // We can reuse "Packet". // // NOTE: if we needed to keep per-packet information in packets // sent down, we can use pStack->IMReserved[]. // ASSERT(pStack); NdisSend(&Status, pAdapt->BindingHandle, Packet); if (Status != NDIS_STATUS_PENDING) { NdisMSendComplete(ADAPT_MINIPORT_HANDLE(pAdapt), Packet, Status); } continue; } } #endif NdisAllocatePacket(&Status, &MyPacket, pAdapt->SendPacketPoolHandle); if (Status == NDIS_STATUS_SUCCESS) { PSEND_RSVD SendRsvd; SendRsvd = (PSEND_RSVD)(MyPacket->ProtocolReserved); SendRsvd->OriginalPkt = Packet; MyPacket->Private.Flags = NdisGetPacketFlags(Packet); MyPacket->Private.Head = Packet->Private.Head; MyPacket->Private.Tail = Packet->Private.Tail; #ifdef WIN9X // // Work around the fact that NDIS does not initialize this // to FALSE on Win9x. // MyPacket->Private.ValidCounts = FALSE; #endif // WIN9X // // Copy the OOB data from the original packet to the new // packet. // NdisMoveMemory(NDIS_OOB_DATA_FROM_PACKET(MyPacket), NDIS_OOB_DATA_FROM_PACKET(Packet), sizeof(NDIS_PACKET_OOB_DATA)); // // Copy relevant parts of the per packet info into the new packet // #ifndef WIN9X NdisIMCopySendPerPacketInfo(MyPacket, Packet); #endif // // Copy the Media specific information // NDIS_GET_PACKET_MEDIA_SPECIFIC_INFO(Packet, &MediaSpecificInfo, &MediaSpecificInfoSize); if (MediaSpecificInfo || MediaSpecificInfoSize) { NDIS_SET_PACKET_MEDIA_SPECIFIC_INFO(MyPacket, MediaSpecificInfo, MediaSpecificInfoSize); } NdisSend(&Status, pAdapt->BindingHandle, MyPacket); if (Status != NDIS_STATUS_PENDING) { #ifndef WIN9X NdisIMCopySendCompletePerPacketInfo (Packet, MyPacket); #endif NdisFreePacket(MyPacket); } } if (Status != NDIS_STATUS_PENDING) { NdisMSendComplete(ADAPT_MINIPORT_HANDLE(pAdapt), Packet, Status); } } } NDIS_STATUS MPQueryInformation( IN NDIS_HANDLE MiniportAdapterContext, IN NDIS_OID Oid, IN PVOID InformationBuffer, IN ULONG InformationBufferLength, OUT PULONG BytesWritten, OUT PULONG BytesNeeded ) /*++ Routine Description: Entry point called by NDIS to query for the value of the specified OID. Typical processing is to forward the query down to the underlying miniport. The following OIDs are filtered here: OID_PNP_QUERY_POWER - return success right here OID_GEN_SUPPORTED_GUIDS - do not forward, otherwise we will show up multiple instances of private GUIDs supported by the underlying miniport. OID_PNP_CAPABILITIES - we do send this down to the lower miniport, but the values returned are postprocessed before we complete this request; see PtRequestComplete. NOTE on OID_TCP_TASK_OFFLOAD - if this IM driver modifies the contents of data it passes through such that a lower miniport may not be able to perform TCP task offload, then it should not forward this OID down, but fail it here with the status NDIS_STATUS_NOT_SUPPORTED. This is to avoid performing incorrect transformations on data. If our miniport edge (upper edge) is at a low-power state, fail the request. If our protocol edge (lower edge) has been notified of a low-power state, we pend this request until the miniport below has been set to D0. Since requests to miniports are serialized always, at most a single request will be pended. Arguments: MiniportAdapterContext Pointer to the adapter structure Oid Oid for this query InformationBuffer Buffer for information InformationBufferLength Size of this buffer BytesWritten Specifies how much info is written BytesNeeded In case the buffer is smaller than what we need, tell them how much is needed Return Value: Return code from the NdisRequest below. --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status = NDIS_STATUS_FAILURE; do { if (Oid == OID_PNP_QUERY_POWER) { // // Do not forward this. // Status = NDIS_STATUS_SUCCESS; break; } if (Oid == OID_GEN_SUPPORTED_GUIDS) { // // Do not forward this, otherwise we will end up with multiple // instances of private GUIDs that the underlying miniport // supports. // Status = NDIS_STATUS_NOT_SUPPORTED; break; } if (Oid == OID_TCP_TASK_OFFLOAD) { // // Fail this -if- this driver performs data transformations // that can interfere with a lower driver's ability to offload // TCP tasks. // // Status = NDIS_STATUS_NOT_SUPPORTED; // break; // } // // All other queries are failed, if the miniport is not at D0 // if (pAdapt->MPDeviceState > NdisDeviceStateD0 || pAdapt->StandingBy == TRUE) { Status = NDIS_STATUS_FAILURE; break; } pAdapt->Request.RequestType = NdisRequestQueryInformation; pAdapt->Request.DATA.QUERY_INFORMATION.Oid = Oid; pAdapt->Request.DATA.QUERY_INFORMATION.InformationBuffer = InformationBuffer; pAdapt->Request.DATA.QUERY_INFORMATION.InformationBufferLength = InformationBufferLength; pAdapt->BytesNeeded = BytesNeeded; pAdapt->BytesReadOrWritten = BytesWritten; pAdapt->OutstandingRequests = TRUE; // // If the Protocol device state is OFF, mark this request as being // pended. We queue this until the device state is back to D0. // if (pAdapt->PTDeviceState > NdisDeviceStateD0) { pAdapt->QueuedRequest = TRUE; Status = NDIS_STATUS_PENDING; break; } // // default case, most requests will be passed to the miniport below // NdisRequest(&Status, pAdapt->BindingHandle, &pAdapt->Request); if (Status != NDIS_STATUS_PENDING) { PtRequestComplete(pAdapt, &pAdapt->Request, Status); Status = NDIS_STATUS_PENDING; } } while (FALSE); return(Status); } VOID MPQueryPNPCapabilities( IN OUT PADAPT pAdapt, OUT PNDIS_STATUS pStatus ) /*++ Routine Description: Postprocess a request for OID_PNP_CAPABILITIES that was forwarded down to the underlying miniport, and has been completed by it. Arguments: pAdapt - Pointer to the adapter structure pStatus - Place to return final status Return Value: None. --*/ { PNDIS_PNP_CAPABILITIES pPNPCapabilities; PNDIS_PM_WAKE_UP_CAPABILITIES pPMstruct; if (pAdapt->Request.DATA.QUERY_INFORMATION.InformationBufferLength >= sizeof(NDIS_PNP_CAPABILITIES)) { pPNPCapabilities = (PNDIS_PNP_CAPABILITIES)(pAdapt->Request.DATA.QUERY_INFORMATION.InformationBuffer); // // The following fields must be overwritten by an IM driver. // pPMstruct= & pPNPCapabilities->WakeUpCapabilities; pPMstruct->MinMagicPacketWakeUp = NdisDeviceStateUnspecified; pPMstruct->MinPatternWakeUp = NdisDeviceStateUnspecified; pPMstruct->MinLinkChangeWakeUp = NdisDeviceStateUnspecified; *pAdapt->BytesReadOrWritten = sizeof(NDIS_PNP_CAPABILITIES); *pAdapt->BytesNeeded = 0; // // Setting our internal flags // Default, device is ON // pAdapt->MPDeviceState = NdisDeviceStateD0; pAdapt->PTDeviceState = NdisDeviceStateD0; *pStatus = NDIS_STATUS_SUCCESS; } else { *pAdapt->BytesNeeded= sizeof(NDIS_PNP_CAPABILITIES); *pStatus = NDIS_STATUS_RESOURCES; } } NDIS_STATUS MPSetInformation( IN NDIS_HANDLE MiniportAdapterContext, IN NDIS_OID Oid, IN PVOID InformationBuffer, IN ULONG InformationBufferLength, OUT PULONG BytesRead, OUT PULONG BytesNeeded ) /*++ Routine Description: Miniport SetInfo handler. In the case of OID_PNP_SET_POWER, record the power state and return the OID. Do not pass below If the device is suspended, do not block the SET_POWER_OID as it is used to reactivate the Passthru miniport PM- If the MP is not ON (DeviceState > D0) return immediately (except for 'query power' and 'set power') If MP is ON, but the PT is not at D0, then queue the queue the request for later processing Requests to miniports are always serialized Arguments: MiniportAdapterContext Pointer to the adapter structure Oid Oid for this query InformationBuffer Buffer for information InformationBufferLength Size of this buffer BytesRead Specifies how much info is read BytesNeeded In case the buffer is smaller than what we need, tell them how much is needed Return Value: Return code from the NdisRequest below. --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status; Status = NDIS_STATUS_FAILURE; do { // // The Set Power should not be sent to the miniport below the Passthru, but is handled internally // if (Oid == OID_PNP_SET_POWER) { MPProcessSetPowerOid(&Status, pAdapt, InformationBuffer, InformationBufferLength, BytesRead, BytesNeeded); break; } // // All other Set Information requests are failed, if the miniport is // not at D0 or is transitioning to a device state greater than D0. // if (pAdapt->MPDeviceState > NdisDeviceStateD0 || pAdapt->StandingBy == TRUE) { Status = NDIS_STATUS_FAILURE; break; } // Set up the Request and return the result pAdapt->Request.RequestType = NdisRequestSetInformation; pAdapt->Request.DATA.SET_INFORMATION.Oid = Oid; pAdapt->Request.DATA.SET_INFORMATION.InformationBuffer = InformationBuffer; pAdapt->Request.DATA.SET_INFORMATION.InformationBufferLength = InformationBufferLength; pAdapt->BytesNeeded = BytesNeeded; pAdapt->BytesReadOrWritten = BytesRead; pAdapt->OutstandingRequests = TRUE; // // If the device below is at a low power state, we cannot send it the // request now, and must pend it. // if (pAdapt->PTDeviceState > NdisDeviceStateD0) { pAdapt->QueuedRequest = TRUE; Status = NDIS_STATUS_PENDING; break; } // // Forward the request to the device below. // NdisRequest(&Status, pAdapt->BindingHandle, &pAdapt->Request); if (Status == NDIS_STATUS_SUCCESS) { *BytesRead = pAdapt->Request.DATA.SET_INFORMATION.BytesRead; *BytesNeeded = pAdapt->Request.DATA.SET_INFORMATION.BytesNeeded; } if (Status != NDIS_STATUS_PENDING) { pAdapt->OutstandingRequests = FALSE; } } while (FALSE); return(Status); } VOID MPProcessSetPowerOid( IN OUT PNDIS_STATUS pNdisStatus, IN PADAPT pAdapt, IN PVOID InformationBuffer, IN ULONG InformationBufferLength, OUT PULONG BytesRead, OUT PULONG BytesNeeded ) /*++ Routine Description: This routine does all the procssing for a request with a SetPower Oid The miniport shoud accept the Set Power and transition to the new state The Set Power should not be passed to the miniport below If the IM miniport is going into a low power state, then there is no guarantee if it will ever be asked go back to D0, before getting halted. No requests should be pended or queued. Arguments: pNdisStatus - Status of the operation pAdapt - The Adapter structure InformationBuffer - The New DeviceState InformationBufferLength BytesRead - No of bytes read BytesNeeded - No of bytes needed Return Value: Status - NDIS_STATUS_SUCCESS if all the wait events succeed. --*/ { NDIS_DEVICE_POWER_STATE NewDeviceState; DBGPRINT(("==>MPProcessSetPowerOid: Adapt %p\n", pAdapt)); ASSERT (InformationBuffer != NULL); *pNdisStatus = NDIS_STATUS_FAILURE; do { // // Check for invalid length // if (InformationBufferLength < sizeof(NDIS_DEVICE_POWER_STATE)) { *pNdisStatus = NDIS_STATUS_INVALID_LENGTH; break; } NewDeviceState = (*(PNDIS_DEVICE_POWER_STATE)InformationBuffer); // // Check for invalid device state // if ((pAdapt->MPDeviceState > NdisDeviceStateD0) && (NewDeviceState != NdisDeviceStateD0)) { // // If the miniport is in a non-D0 state, the miniport can only receive a Set Power to D0 // ASSERT (!(pAdapt->MPDeviceState > NdisDeviceStateD0) && (NewDeviceState != NdisDeviceStateD0)); *pNdisStatus = NDIS_STATUS_FAILURE; break; } // // Is the miniport transitioning from an On (D0) state to an Low Power State (>D0) // If so, then set the StandingBy Flag - (Block all incoming requests) // if (pAdapt->MPDeviceState == NdisDeviceStateD0 && NewDeviceState > NdisDeviceStateD0) { pAdapt->StandingBy = TRUE; } // // If the miniport is transitioning from a low power state to ON (D0), then clear the StandingBy flag // All incoming requests will be pended until the physical miniport turns ON. // if (pAdapt->MPDeviceState > NdisDeviceStateD0 && NewDeviceState == NdisDeviceStateD0) { pAdapt->StandingBy = FALSE; } // // Now update the state in the pAdapt structure; // pAdapt->MPDeviceState = NewDeviceState; *pNdisStatus = NDIS_STATUS_SUCCESS; } while (FALSE); if (*pNdisStatus == NDIS_STATUS_SUCCESS) { // // The miniport resume from low power state // if (pAdapt->StandingBy == FALSE) { // // If we need to indicate the media connect state // if (pAdapt->LastIndicatedStatus != pAdapt->LatestUnIndicateStatus) { NdisMIndicateStatus(pAdapt->MiniportHandle, pAdapt->LatestUnIndicateStatus, (PVOID)NULL, 0); NdisMIndicateStatusComplete(pAdapt->MiniportHandle); pAdapt->LastIndicatedStatus = pAdapt->LatestUnIndicateStatus; } } else { // // Initialize LatestUnIndicatedStatus // pAdapt->LatestUnIndicateStatus = pAdapt->LastIndicatedStatus; } *BytesRead = sizeof(NDIS_DEVICE_POWER_STATE); *BytesNeeded = 0; } else { *BytesRead = 0; *BytesNeeded = sizeof (NDIS_DEVICE_POWER_STATE); } DBGPRINT(("<==MPProcessSetPowerOid: Adapt %p\n", pAdapt)); } VOID MPReturnPacket( IN NDIS_HANDLE MiniportAdapterContext, IN PNDIS_PACKET Packet ) /*++ Routine Description: NDIS Miniport entry point called whenever protocols are done with a packet that we had indicated up and they had queued up for returning later. Arguments: MiniportAdapterContext - pointer to ADAPT structure Packet - packet being returned. Return Value: None. --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; #ifdef NDIS51 // // Packet stacking: Check if this packet belongs to us. // if (NdisGetPoolFromPacket(Packet) != pAdapt->RecvPacketPoolHandle) { // // We reused the original packet in a receive indication. // Simply return it to the miniport below us. // NdisReturnPackets(&Packet, 1); } else #endif // NDIS51 { // // This is a packet allocated from this IM's receive packet pool. // Reclaim our packet, and return the original to the driver below. // PNDIS_PACKET MyPacket; PRECV_RSVD RecvRsvd; RecvRsvd = (PRECV_RSVD)(Packet->MiniportReserved); MyPacket = RecvRsvd->OriginalPkt; NdisFreePacket(Packet); NdisReturnPackets(&MyPacket, 1); } } NDIS_STATUS MPTransferData( OUT PNDIS_PACKET Packet, OUT PUINT BytesTransferred, IN NDIS_HANDLE MiniportAdapterContext, IN NDIS_HANDLE MiniportReceiveContext, IN UINT ByteOffset, IN UINT BytesToTransfer ) /*++ Routine Description: Miniport's transfer data handler. Arguments: Packet Destination packet BytesTransferred Place-holder for how much data was copied MiniportAdapterContext Pointer to the adapter structure MiniportReceiveContext Context ByteOffset Offset into the packet for copying data BytesToTransfer How much to copy. Return Value: Status of transfer --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status; // // Return, if the device is OFF // if (IsIMDeviceStateOn(pAdapt) == FALSE) { return NDIS_STATUS_FAILURE; } NdisTransferData(&Status, pAdapt->BindingHandle, MiniportReceiveContext, ByteOffset, BytesToTransfer, Packet, BytesTransferred); return(Status); } VOID MPHalt( IN NDIS_HANDLE MiniportAdapterContext ) /*++ Routine Description: Halt handler. All the hard-work for clean-up is done here. Arguments: MiniportAdapterContext Pointer to the Adapter Return Value: None. --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; NDIS_STATUS Status; PADAPT pCursor, *ppCursor; PADAPT pPromoteAdapt = NULL; DBGPRINT(("==>MiniportHalt: Adapt %p\n", pAdapt)); // // Remove this adapter from the global list // NdisAcquireSpinLock(&GlobalLock); for (ppCursor = &pAdaptList; *ppCursor != NULL; ppCursor = &(*ppCursor)->Next) { if (*ppCursor == pAdapt) { *ppCursor = pAdapt->Next; break; } } NdisReleaseSpinLock(&GlobalLock); // // Delete the ioctl interface that was created when the miniport // was created. // (VOID)PtDeregisterDevice(); // // If we have a valid bind, close the miniport below the protocol // if (pAdapt->BindingHandle != NULL) { // // Close the binding below. and wait for it to complete // NdisResetEvent(&pAdapt->Event); NdisCloseAdapter(&Status, pAdapt->BindingHandle); if (Status == NDIS_STATUS_PENDING) { NdisWaitEvent(&pAdapt->Event, 0); Status = pAdapt->Status; } ASSERT (Status == NDIS_STATUS_SUCCESS); pAdapt->BindingHandle = NULL; } // // Free all resources on this adapter structure. // MPFreeAllPacketPools (pAdapt); NdisFreeMemory(pAdapt, sizeof(ADAPT), 0); DBGPRINT(("<== MiniportHalt: pAdapt %p\n", pAdapt)); } NDIS_STATUS MPReset( OUT PBOOLEAN AddressingReset, IN NDIS_HANDLE MiniportAdapterContext ) /*++ Routine Description: Reset Handler. We just don't do anything. Arguments: AddressingReset To let NDIS know whether we need help from it with our reset MiniportAdapterContext Pointer to our adapter Return Value: --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; *AddressingReset = FALSE; return(NDIS_STATUS_SUCCESS); } #ifdef NDIS51_MINIPORT VOID MPCancelSendPackets( IN NDIS_HANDLE MiniportAdapterContext, IN PVOID CancelId ) /*++ Routine Description: The miniport entry point to handle cancellation of all send packets that match the given CancelId. If we have queued any packets that match this, then we should dequeue them and call NdisMSendComplete for all such packets, with a status of NDIS_STATUS_REQUEST_ABORTED. We should also call NdisCancelSendPackets in turn, on each lower binding that this adapter corresponds to. This is to let miniports below cancel any matching packets. Arguments: MiniportAdapterContext - pointer to ADAPT structure CancelId - ID of packets to be cancelled. Return Value: None --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; // // If we queue packets on our adapter structure, this would be // the place to acquire a spinlock to it, unlink any packets whose // Id matches CancelId, release the spinlock and call NdisMSendComplete // with NDIS_STATUS_REQUEST_ABORTED for all unlinked packets. // // // Next, pass this down so that we let the miniport(s) below cancel // any packets that they might have queued. // NdisCancelSendPackets(pAdapt->BindingHandle, CancelId); return; } VOID MPDevicePnPEvent( IN NDIS_HANDLE MiniportAdapterContext, IN NDIS_DEVICE_PNP_EVENT DevicePnPEvent, IN PVOID InformationBuffer, IN ULONG InformationBufferLength ) /*++ Routine Description: This handler is called to notify us of PnP events directed to our miniport device object. Arguments: MiniportAdapterContext - pointer to ADAPT structure DevicePnPEvent - the event InformationBuffer - Points to additional event-specific information InformationBufferLength - length of above Return Value: None --*/ { // TBD - add code/comments about processing this. return; } VOID MPAdapterShutdown( IN NDIS_HANDLE MiniportAdapterContext ) /*++ Routine Description: This handler is called to notify us of an impending system shutdown. Arguments: MiniportAdapterContext - pointer to ADAPT structure Return Value: None --*/ { return; } #endif VOID MPFreeAllPacketPools( PADAPT pAdapt ) /*++ Routine Description: Free all packet pools on the specified adapter. Arguments: pAdapt - pointer to ADAPT structure Return Value: None --*/ { if (pAdapt->RecvPacketPoolHandle != NULL) { // // Free the packet pool that is used to indicate receives // NdisFreePacketPool(pAdapt->RecvPacketPoolHandle); pAdapt->RecvPacketPoolHandle = NULL; } if (pAdapt->SendPacketPoolHandle != NULL) { // // Free the packet pool that is used to send packets below // NdisFreePacketPool(pAdapt->SendPacketPoolHandle); pAdapt->SendPacketPoolHandle = NULL; } }