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1284 lines
50 KiB
1284 lines
50 KiB
/***************************************************************************
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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RECEIVE.C
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Abstract:
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Packet and message receive routines
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Environment:
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kernel mode only
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Notes:
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THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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PURPOSE.
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Copyright (c) 1999 Microsoft Corporation. All Rights Reserved.
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Revision History:
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5/20/99 : created
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Author:
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Tom Green
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****************************************************************************/
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#include "precomp.h"
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//
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// Some debug stuff, not critical to operation:
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//
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ULONG RcvFrameAllocs = 0;
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ULONG RcvTimerCount = 0;
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ULONG RcvPacketCount = 0;
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ULONG RcvMaxPackets = 0;
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ULONG RcvIndicateCount = 0;
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ULONG RcvReturnCount = 0;
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//
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// For raw encapsulation test
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//
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extern ULONG gRawEncap;
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/****************************************************************************/
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/* RndismpGetReturnedPackets */
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/****************************************************************************/
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/* */
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/* Routine Description: */
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/* */
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/* This function is called by NDIS to return to our possession a packet */
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/* that we had indicated up. */
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/* */
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/* Arguments: */
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/* */
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/* MiniportAdapterContext - a context version of our Adapter pointer */
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/* pNdisPacket - the packet that is being freed */
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/* */
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/* Return: */
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/* */
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/* VOID */
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/* */
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/****************************************************************************/
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VOID
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RndismpReturnPacket(IN NDIS_HANDLE MiniportAdapterContext,
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IN PNDIS_PACKET pNdisPacket)
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{
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PRNDISMP_ADAPTER pAdapter;
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PRNDISMP_RECV_PKT_RESERVED pRcvResvd;
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PRNDISMP_RECV_DATA_FRAME pRcvFrame;
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PRNDISMP_VC pVc;
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PNDIS_BUFFER pNdisBuffer;
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ULONG RefCount;
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// get adapter context
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pAdapter = PRNDISMP_ADAPTER_FROM_CONTEXT_HANDLE(MiniportAdapterContext);
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CHECK_VALID_ADAPTER(pAdapter);
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TRACE2(("RndismpReturnPacket: Adapter %x, Pkt %x\n", pAdapter, pNdisPacket));
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// get receive frame context
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pRcvResvd = PRNDISMP_RESERVED_FROM_RECV_PACKET(pNdisPacket);
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pRcvFrame = pRcvResvd->pRcvFrame;
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pVc = pRcvResvd->pVc;
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// Free the buffer.
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NdisQueryPacket(pNdisPacket,
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NULL,
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NULL,
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&pNdisBuffer,
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NULL);
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NdisFreeBuffer(pNdisBuffer);
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DereferenceRcvFrame(pRcvFrame, pAdapter);
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if (pVc != NULL)
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{
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RNDISMP_DEREF_VC(pVc, &RefCount);
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}
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NdisFreePacket(pNdisPacket);
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RcvReturnCount++;
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} // RndismpReturnPacket
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/****************************************************************************/
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/* DereferenceRcvFrame */
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/****************************************************************************/
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/* */
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/* Routine Description: */
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/* */
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/* Utility routine to deref a receive frame structure, e.g. when a */
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/* received packet is returned to us from higher layers. */
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/* */
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/* Arguments: */
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/* */
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/* pRcvFrame - Pointer to receive frame to be deref'ed. */
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/* pAdapter - Pointer to adapter structure */
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/* */
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/* Return: */
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/* */
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/* VOID */
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/* */
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/****************************************************************************/
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VOID
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DereferenceRcvFrame(IN PRNDISMP_RECV_DATA_FRAME pRcvFrame,
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IN PRNDISMP_ADAPTER pAdapter)
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{
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ULONG ReturnsPending;
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ReturnsPending = NdisInterlockedDecrement(&pRcvFrame->ReturnsPending);
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if (ReturnsPending == 0)
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{
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TRACE3(("DerefRcvFrame: Adapter %x, Frame %p, uPcontext %x, LocalCopy %d\n",
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pAdapter, pRcvFrame, pRcvFrame->MicroportMessageContext, pRcvFrame->bMessageCopy));
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if (pRcvFrame->bMessageCopy)
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{
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FreeRcvMessageCopy(pRcvFrame->pLocalMessageCopy);
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}
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else
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{
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TRACE3(("DerefRcvFrame: uP MDL %x, uPContext %x\n",
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pRcvFrame->pMicroportMdl,
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pRcvFrame->MicroportMessageContext));
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RNDISMP_RETURN_TO_MICROPORT(pAdapter,
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pRcvFrame->pMicroportMdl,
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pRcvFrame->MicroportMessageContext);
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}
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FreeReceiveFrame(pRcvFrame, pAdapter);
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}
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} // DereferenceRcvFrame
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/****************************************************************************/
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/* RndisMIndicateReceive */
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/****************************************************************************/
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/* */
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/* Routine Description: */
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/* */
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/* Called by microport to indicate receiving RNDIS messages */
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/* */
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/* Arguments: */
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/* */
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/* MiniportAdapterContext - a context version of our Adapter pointer */
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/* pMdl - pointer to MDL chain describing RNDIS message */
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/* MicroportMessageContext - context for message from micorport */
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/* ChannelType - channel on which this message arrived (control/data) */
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/* ReceiveStatus - used by microport to indicate it is low on resource */
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/* */
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/* Return: */
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/* */
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/* VOID */
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/* */
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/****************************************************************************/
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VOID
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RndisMIndicateReceive(IN NDIS_HANDLE MiniportAdapterContext,
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IN PMDL pMdl,
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IN NDIS_HANDLE MicroportMessageContext,
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IN RM_CHANNEL_TYPE ChannelType,
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IN NDIS_STATUS ReceiveStatus)
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{
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PRNDISMP_ADAPTER Adapter;
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PRNDIS_MESSAGE pMessage;
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BOOLEAN bMessageCopied = FALSE;
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PRNDISMP_MSG_HANDLER_FUNC pMsgHandlerFunc;
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BOOLEAN bReturnToMicroport;
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NDIS_STATUS Status;
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PRNDISMP_RECV_MSG_CONTEXT pRcvMsg;
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PMDL pTmpMdl;
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ULONG TotalLength;
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Adapter = PRNDISMP_ADAPTER_FROM_CONTEXT_HANDLE(MiniportAdapterContext);
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CHECK_VALID_ADAPTER(Adapter);
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TRACE2(("RndisIndicateReceive: Adapter %x, Mdl %x\n", Adapter, pMdl));
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RNDISMP_ASSERT_AT_DISPATCH();
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bReturnToMicroport = TRUE;
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#if DBG
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NdisInterlockedIncrement(&Adapter->MicroportReceivesOutstanding);
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#endif
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do
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{
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//
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// Find the total length first.
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//
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TotalLength = 0;
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for (pTmpMdl = pMdl; pTmpMdl != NULL; pTmpMdl = RNDISMP_GET_MDL_NEXT(pTmpMdl))
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{
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TotalLength += RNDISMP_GET_MDL_LENGTH(pTmpMdl);
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}
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//
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// Check if the entire message is in a single MDL - if not, make a copy
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// TBD -- handle multi-MDL messages without copying.
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//
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if ((RNDISMP_GET_MDL_NEXT(pMdl) == NULL) &&
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(!Adapter->bRunningOnWin9x || (ReceiveStatus != NDIS_STATUS_RESOURCES)))
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{
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pMessage = RNDISMP_GET_MDL_ADDRESS(pMdl);
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if (pMessage == NULL)
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{
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TRACE0(("RndisMIndicateReceive: Adapter %x: failed to"
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" access msg from MDL %x\n", Adapter, pMdl));
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break;
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}
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}
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else
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{
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pMessage = CoalesceMultiMdlMessage(pMdl, TotalLength);
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if (pMessage == NULL)
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{
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break;
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}
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bMessageCopied = TRUE;
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}
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TRACEDUMP(("Received msg (%d bytes):\n", TotalLength),
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pMessage, TotalLength);
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// get timer tick for this message
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NdisGetSystemUpTime(&Adapter->LastMessageFromDevice);
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if (Adapter->bRunningOnWin9x)
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{
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Status = MemAlloc(&pRcvMsg, sizeof(RNDISMP_RECV_MSG_CONTEXT));
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if (Status != NDIS_STATUS_SUCCESS)
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{
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bReturnToMicroport = TRUE;
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TRACE1(("RndisMIndicateReceive: Adapter %x, failed to alloc rcv msg\n",
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Adapter));
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break;
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}
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pRcvMsg->MicroportMessageContext = MicroportMessageContext;
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pRcvMsg->pMdl = pMdl;
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pRcvMsg->TotalLength = TotalLength;
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pRcvMsg->pMessage = pMessage;
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pRcvMsg->ReceiveStatus = ReceiveStatus;
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pRcvMsg->bMessageCopied = bMessageCopied;
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pRcvMsg->ChannelType = ChannelType;
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//
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// Queue all packets for indicating receives up to protocols.
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// We do this rather than indicate packets directly because
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// we are in a DPC context, and need to be in a "global event"
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// context to make the upper layers happy. One way to be in a
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// global event context is to be in the context of an NDIS timer
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// callback function.
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//
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// So, queue this up on the adapter and start a timer
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// routine if necessary.
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//
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bReturnToMicroport = FALSE;
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RNDISMP_ACQUIRE_ADAPTER_LOCK(Adapter);
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InsertTailList(&Adapter->PendingRcvMessageList, &pRcvMsg->Link);
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if (!Adapter->IndicatingReceives)
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{
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Adapter->IndicatingReceives = TRUE;
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NdisSetTimer(&Adapter->IndicateTimer, 0);
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}
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RNDISMP_RELEASE_ADAPTER_LOCK(Adapter);
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}
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else
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{
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//
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// Running on NT.
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if ((Adapter->DeviceFlags & RNDIS_DF_RAW_DATA) || (gRawEncap))
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{
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if (ChannelType == RMC_CONTROL)
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{
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RNDISMP_GET_MSG_HANDLER(pMsgHandlerFunc,pMessage->NdisMessageType);
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#if DBG
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ASSERT(pMessage->NdisMessageType != REMOTE_NDIS_PACKET_MSG);
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#endif
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} else
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{
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pMsgHandlerFunc = ReceivePacketMessageRaw;
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}
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} else
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{
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RNDISMP_GET_MSG_HANDLER(pMsgHandlerFunc, pMessage->NdisMessageType);
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#if DBG
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if (pMessage->NdisMessageType == REMOTE_NDIS_PACKET_MSG)
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{
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ASSERT(ChannelType == RMC_DATA);
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}
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else
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{
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ASSERT(ChannelType == RMC_CONTROL);
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}
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#endif
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}
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bReturnToMicroport = (*pMsgHandlerFunc)(
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Adapter,
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pMessage,
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pMdl,
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TotalLength,
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MicroportMessageContext,
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ReceiveStatus,
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bMessageCopied);
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}
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}
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while (FALSE);
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//
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// Are we done with the microport's message?
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//
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if (bReturnToMicroport || bMessageCopied)
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{
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RNDISMP_RETURN_TO_MICROPORT(Adapter,
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pMdl,
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MicroportMessageContext);
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}
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//
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// If we had made a copy of the microport's message, are we done with
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// this copy?
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//
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if (bMessageCopied && bReturnToMicroport)
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{
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FreeRcvMessageCopy(pMessage);
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}
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}
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/****************************************************************************/
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/* CoalesceMultiMdlMessage */
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/****************************************************************************/
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/* */
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/* Routine Description: */
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/* */
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/* Make a copy of a received message that is in a chain of multiple */
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/* MDLs, into one single buffer. */
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/* */
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/* Arguments: */
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/* */
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/* pMdl - pointer to MDL that is the head of the chain. */
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/* TotalLength - length of data contained in entire chain. */
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/* */
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/* Return: */
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/* */
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/* PRNDIS_MESSAGE */
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/* */
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/****************************************************************************/
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PRNDIS_MESSAGE
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CoalesceMultiMdlMessage(IN PMDL pMdl,
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IN ULONG TotalLength)
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{
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ULONG MdlLength;
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PRNDIS_MESSAGE pMessage;
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NDIS_STATUS Status;
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PMDL pTmpMdl;
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PUCHAR pDest;
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TRACE2(("Coalesce: Mdl %x\n", pMdl));
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Status = MemAlloc(&pMessage, TotalLength);
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if (Status == NDIS_STATUS_SUCCESS)
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{
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pDest = (PUCHAR)pMessage;
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for (pTmpMdl = pMdl; pTmpMdl != NULL; pTmpMdl = RNDISMP_GET_MDL_NEXT(pTmpMdl))
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{
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MdlLength = RNDISMP_GET_MDL_LENGTH(pTmpMdl);
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RNDISMP_MOVE_MEM(pDest,
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RNDISMP_GET_MDL_ADDRESS(pTmpMdl),
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MdlLength);
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pDest = (PUCHAR)pDest + MdlLength;
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}
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}
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else
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{
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pMessage = NULL;
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}
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return (pMessage);
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}
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/****************************************************************************/
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/* FreeRcvMessageCopy */
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/****************************************************************************/
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/* */
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/* Routine Description: */
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/* */
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/* Free the local copy of a received RNDIS message. */
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/* */
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/* Arguments: */
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/* */
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/* pMessage - pointer to RNDIS message */
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/* */
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/* Return: */
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/* */
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/* VOID */
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/* */
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/****************************************************************************/
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VOID
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FreeRcvMessageCopy(IN PRNDIS_MESSAGE pMessage)
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{
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TRACE3(("FreeRcvMessageCopy: pMessage %x\n", pMessage));
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MemFree(pMessage, -1);
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}
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/****************************************************************************/
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/* ReceivePacketMessage */
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/****************************************************************************/
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/* */
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/* Routine Description: */
|
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/* */
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/* Got a packet message, so send it to the upper layers */
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/* */
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/* Arguments: */
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/* */
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/* pAdapter - pointer to our Adapter structure */
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/* pMessage - pointer to RNDIS message */
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/* pMdl - pointer to MDL received from microport */
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/* TotalLength - length of complete message */
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/* MicroportMessageContext - context for message from micorport */
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/* ReceiveStatus - used by microport to indicate it is low on resource */
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/* bMessageCopied - is this a copy of the original message? */
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/* */
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/* Return: */
|
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/* */
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/* BOOLEAN - should the message be returned to the microport? */
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/* */
|
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/****************************************************************************/
|
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BOOLEAN
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ReceivePacketMessage(IN PRNDISMP_ADAPTER pAdapter,
|
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IN PRNDIS_MESSAGE pMessage,
|
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IN PMDL pMdl,
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IN ULONG TotalLength,
|
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IN NDIS_HANDLE MicroportMessageContext,
|
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IN NDIS_STATUS ReceiveStatus,
|
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IN BOOLEAN bMessageCopied)
|
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{
|
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ULONG LengthRemaining; // in entire message
|
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PMDL pTmpMdl;
|
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PRNDISMP_RECV_DATA_FRAME pRcvFrame;
|
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ULONG NumberOfPackets;
|
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PRNDIS_PACKET pRndisPacket;
|
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ULONG i;
|
|
#define MAX_RECV_PACKETS_IN_MSG 40
|
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PNDIS_PACKET PacketArray[MAX_RECV_PACKETS_IN_MSG];
|
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ULONG NumPackets;
|
|
|
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PNDIS_PACKET pNdisPacket;
|
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PRNDISMP_RECV_PKT_RESERVED pRcvResvd;
|
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PNDIS_BUFFER pNdisBuffer;
|
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NDIS_STATUS BufferStatus;
|
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NDIS_STATUS Status;
|
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BOOLEAN bDiscardPkt;
|
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PRNDISMP_VC pVc;
|
|
|
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bDiscardPkt = FALSE;
|
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pVc = NULL;
|
|
|
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do
|
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{
|
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#ifndef BUILD_WIN9X
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if (bMessageCopied)
|
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{
|
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ReceiveStatus = NDIS_STATUS_SUCCESS;
|
|
}
|
|
#else
|
|
//
|
|
// Rur ReturnPacket handler never gets called on
|
|
// Win98 Gold, so we force the status to be able
|
|
// to reclaim the indicated packet immediately.
|
|
//
|
|
ReceiveStatus = NDIS_STATUS_RESOURCES;
|
|
#endif
|
|
|
|
//
|
|
// Allocate a receive frame to keep track of this RNDIS packet message.
|
|
//
|
|
pRcvFrame = AllocateReceiveFrame(pAdapter);
|
|
|
|
if (pRcvFrame == NULL)
|
|
{
|
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bDiscardPkt = TRUE;
|
|
break;
|
|
}
|
|
|
|
pRcvFrame->MicroportMessageContext = MicroportMessageContext;
|
|
if (bMessageCopied)
|
|
{
|
|
pRcvFrame->pLocalMessageCopy = pMessage;
|
|
pRcvFrame->bMessageCopy = TRUE;
|
|
}
|
|
else
|
|
{
|
|
pRcvFrame->pMicroportMdl = pMdl;
|
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pRcvFrame->bMessageCopy = FALSE;
|
|
}
|
|
|
|
NumberOfPackets = 0;
|
|
|
|
LengthRemaining = TotalLength;
|
|
|
|
//
|
|
// TBD - Check that the received message is well-formed!
|
|
//
|
|
|
|
//
|
|
// Temp ref to take care of multiple indications.
|
|
//
|
|
pRcvFrame->ReturnsPending = 1;
|
|
|
|
//
|
|
// Prepare NDIS packets for indicating up.
|
|
//
|
|
do
|
|
{
|
|
pRndisPacket = RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(pMessage);
|
|
|
|
//
|
|
// Some sanity checks. TBD - do better checks!
|
|
//
|
|
if ((pMessage->MessageLength > LengthRemaining) ||
|
|
(pMessage->NdisMessageType != REMOTE_NDIS_PACKET_MSG) ||
|
|
(pMessage->MessageLength < RNDIS_MESSAGE_SIZE(RNDIS_PACKET)))
|
|
{
|
|
TRACE1(("ReceivePacketMessage: Msg %x: length %d or type %x has a problem\n",
|
|
pMessage, pMessage->MessageLength, pMessage->NdisMessageType));
|
|
ASSERT(FALSE);
|
|
RNDISMP_INCR_STAT(pAdapter, RecvError);
|
|
break;
|
|
}
|
|
|
|
if (pRndisPacket->DataLength > pMessage->MessageLength)
|
|
{
|
|
TRACE1(("ReceivePacketMessage: invalid data length (%d) > Msg length (%d)\n",
|
|
pRndisPacket->DataLength, pMessage->MessageLength));
|
|
RNDISMP_INCR_STAT(pAdapter, RecvError);
|
|
break;
|
|
}
|
|
|
|
if (pRndisPacket->VcHandle != 0)
|
|
{
|
|
pVc = LookupVcId(pAdapter, pRndisPacket->VcHandle);
|
|
if (pVc == NULL)
|
|
{
|
|
TRACE1(("ReceivePacketMessage: invalid Vc handle %x\n", pRndisPacket->VcHandle));
|
|
RNDISMP_INCR_STAT(pAdapter, RecvError);
|
|
break;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Allocate an NDIS packet to do the indication with.
|
|
//
|
|
NdisAllocatePacket(&Status, &pNdisPacket, pAdapter->ReceivePacketPool);
|
|
if (Status != NDIS_STATUS_SUCCESS)
|
|
{
|
|
pNdisPacket = NULL;
|
|
|
|
TRACE2(("ReceivePacketMessage: failed to allocate packet, Adapter %X\n",
|
|
pAdapter));
|
|
|
|
RNDISMP_INCR_STAT(pAdapter, RecvNoBuf);
|
|
break;
|
|
}
|
|
|
|
NDIS_SET_PACKET_STATUS(pNdisPacket, ReceiveStatus);
|
|
|
|
switch (pAdapter->Medium)
|
|
{
|
|
case NdisMedium802_3:
|
|
NDIS_SET_PACKET_HEADER_SIZE(pNdisPacket, ETHERNET_HEADER_SIZE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
NdisAllocateBuffer(&BufferStatus,
|
|
&pNdisBuffer,
|
|
pAdapter->ReceiveBufferPool,
|
|
GET_PTR_TO_RNDIS_DATA_BUFF(pRndisPacket),
|
|
pRndisPacket->DataLength);
|
|
|
|
if (BufferStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
TRACE1(("ReceivePacketMessage: failed to allocate"
|
|
" buffer, Adapter %X\n", pAdapter));
|
|
NdisFreePacket(pNdisPacket);
|
|
RNDISMP_INCR_STAT(pAdapter, RecvNoBuf);
|
|
break;
|
|
}
|
|
|
|
TRACE2(("Rcv: msg Pkt %d bytes\n", pRndisPacket->DataLength));
|
|
TRACEDUMP(("Rcv %d bytes\n", pRndisPacket->DataLength),
|
|
GET_PTR_TO_RNDIS_DATA_BUFF(pRndisPacket),
|
|
MIN(pRndisPacket->DataLength, 32));
|
|
|
|
NdisChainBufferAtFront(pNdisPacket, pNdisBuffer);
|
|
|
|
//
|
|
// Check if there is per-packet info.
|
|
//
|
|
if (!pAdapter->bRunningOnWin9x)
|
|
{
|
|
PRNDIS_PER_PACKET_INFO pPerPacketInfo;
|
|
ULONG PerPacketInfoLength;
|
|
|
|
if (PerPacketInfoLength = pRndisPacket->PerPacketInfoLength)
|
|
{
|
|
TRACE1(("ReceivePacketMessage: Adapter %p, Pkt %p:"
|
|
" non-zero perpacket length %d\n",
|
|
pAdapter, pRndisPacket, PerPacketInfoLength));
|
|
|
|
pPerPacketInfo = (PRNDIS_PER_PACKET_INFO)((PUCHAR)pRndisPacket +
|
|
pRndisPacket->PerPacketInfoOffset);
|
|
|
|
while (PerPacketInfoLength != 0)
|
|
{
|
|
switch (pPerPacketInfo->Type)
|
|
{
|
|
case TcpIpChecksumPacketInfo:
|
|
NDIS_PER_PACKET_INFO_FROM_PACKET(pNdisPacket, TcpIpChecksumPacketInfo) =
|
|
UlongToPtr(*(PULONG)((PUCHAR)pPerPacketInfo + pPerPacketInfo->PerPacketInformationOffset));
|
|
break;
|
|
|
|
case Ieee8021pPriority:
|
|
NDIS_PER_PACKET_INFO_FROM_PACKET(pNdisPacket, Ieee8021pPriority) =
|
|
UlongToPtr(*(PULONG)((PUCHAR)pPerPacketInfo + pPerPacketInfo->PerPacketInformationOffset));
|
|
|
|
default:
|
|
break;
|
|
}
|
|
PerPacketInfoLength -= pPerPacketInfo->Size;
|
|
pPerPacketInfo = (PRNDIS_PER_PACKET_INFO)((PUCHAR)pPerPacketInfo +
|
|
pPerPacketInfo->Size);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Add this to the array of packets to be indicated up.
|
|
//
|
|
PacketArray[NumberOfPackets] = pNdisPacket;
|
|
NumberOfPackets++;
|
|
RNDISMP_INCR_STAT(pAdapter, RecvOk);
|
|
|
|
pRcvResvd = PRNDISMP_RESERVED_FROM_RECV_PACKET(pNdisPacket);
|
|
pRcvResvd->pRcvFrame = pRcvFrame;
|
|
pRcvResvd->pVc = pVc;
|
|
|
|
TRACE2(("ReceivePacketMessage: pRndisPkt %X, MsgLen %d,"
|
|
" DataLen %d, Stat %x, Discard %d\n",
|
|
pRndisPacket, pMessage->MessageLength,
|
|
pRndisPacket->DataLength, ReceiveStatus, bDiscardPkt));
|
|
|
|
LengthRemaining -= pMessage->MessageLength;
|
|
pMessage = (PRNDIS_MESSAGE)((ULONG_PTR)pMessage + pMessage->MessageLength);
|
|
|
|
NdisInterlockedIncrement(&pRcvFrame->ReturnsPending);
|
|
|
|
if ((NumberOfPackets == MAX_RECV_PACKETS_IN_MSG) ||
|
|
(LengthRemaining < RNDIS_MESSAGE_SIZE(RNDIS_PACKET)))
|
|
{
|
|
if (pVc == NULL)
|
|
{
|
|
RcvIndicateCount += NumberOfPackets;
|
|
NdisMIndicateReceivePacket(pAdapter->MiniportAdapterHandle,
|
|
PacketArray,
|
|
NumberOfPackets);
|
|
}
|
|
else
|
|
{
|
|
IndicateReceiveDataOnVc(pVc, PacketArray, NumberOfPackets);
|
|
}
|
|
|
|
if (ReceiveStatus == NDIS_STATUS_RESOURCES)
|
|
{
|
|
for (i = 0; i < NumberOfPackets; i++)
|
|
{
|
|
RNDISMP_INCR_STAT(pAdapter, RecvLowRes);
|
|
RndismpReturnPacket(pAdapter,
|
|
PacketArray[i]);
|
|
}
|
|
}
|
|
|
|
NumberOfPackets = 0;
|
|
}
|
|
}
|
|
while (LengthRemaining >= RNDIS_MESSAGE_SIZE(RNDIS_PACKET));
|
|
|
|
|
|
if (NumberOfPackets != 0)
|
|
{
|
|
//
|
|
// We bailed out of the above loop. Return what we
|
|
// have collected so far.
|
|
//
|
|
for (i = 0; i < NumberOfPackets; i++)
|
|
{
|
|
RndismpReturnPacket(pAdapter,
|
|
PacketArray[i]);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Remove temp ref we added at the top.
|
|
//
|
|
DereferenceRcvFrame(pRcvFrame, pAdapter);
|
|
|
|
}
|
|
while (FALSE);
|
|
|
|
if (pVc != NULL)
|
|
{
|
|
ULONG RefCount;
|
|
|
|
RNDISMP_DEREF_VC(pVc, &RefCount);
|
|
}
|
|
|
|
return (bDiscardPkt);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* ReceivePacketMessageRaw */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Got a packet message, so send it to the upper layers */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* pAdapter - pointer to our Adapter structure */
|
|
/* pMessage - pointer to RNDIS message */
|
|
/* pMdl - pointer to MDL received from microport */
|
|
/* TotalLength - length of complete message */
|
|
/* MicroportMessageContext - context for message from micorport */
|
|
/* ReceiveStatus - used by microport to indicate it is low on resource */
|
|
/* bMessageCopied - is this a copy of the original message? */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* BOOLEAN - should the message be returned to the microport? */
|
|
/* */
|
|
/****************************************************************************/
|
|
BOOLEAN
|
|
ReceivePacketMessageRaw(IN PRNDISMP_ADAPTER pAdapter,
|
|
IN PRNDIS_MESSAGE pMessage,
|
|
IN PMDL pMdl,
|
|
IN ULONG TotalLength,
|
|
IN NDIS_HANDLE MicroportMessageContext,
|
|
IN NDIS_STATUS ReceiveStatus,
|
|
IN BOOLEAN bMessageCopied)
|
|
{
|
|
ULONG LengthRemaining; // in entire message
|
|
PMDL pTmpMdl;
|
|
PRNDISMP_RECV_DATA_FRAME pRcvFrame;
|
|
ULONG NumberOfPackets;
|
|
PRNDIS_PACKET pRndisPacket;
|
|
ULONG i;
|
|
#define MAX_RECV_PACKETS_IN_MSG 40
|
|
PNDIS_PACKET PacketArray[MAX_RECV_PACKETS_IN_MSG];
|
|
ULONG NumPackets;
|
|
|
|
PNDIS_PACKET pNdisPacket;
|
|
PRNDISMP_RECV_PKT_RESERVED pRcvResvd;
|
|
PNDIS_BUFFER pNdisBuffer;
|
|
NDIS_STATUS BufferStatus;
|
|
NDIS_STATUS Status;
|
|
BOOLEAN bDiscardPkt;
|
|
PRNDISMP_VC pVc;
|
|
|
|
bDiscardPkt = FALSE;
|
|
pVc = NULL;
|
|
pRcvFrame = NULL;
|
|
|
|
do
|
|
{
|
|
#ifndef BUILD_WIN9X
|
|
if (bMessageCopied)
|
|
{
|
|
ReceiveStatus = NDIS_STATUS_SUCCESS;
|
|
}
|
|
#else
|
|
//
|
|
// Rur ReturnPacket handler never gets called on
|
|
// Win98 Gold, so we force the status to be able
|
|
// to reclaim the indicated packet immediately.
|
|
//
|
|
ReceiveStatus = NDIS_STATUS_RESOURCES;
|
|
#endif
|
|
|
|
//
|
|
// Allocate a receive frame to keep track of this RNDIS packet message.
|
|
//
|
|
pRcvFrame = AllocateReceiveFrame(pAdapter);
|
|
|
|
if (pRcvFrame == NULL)
|
|
{
|
|
bDiscardPkt = TRUE;
|
|
break;
|
|
}
|
|
|
|
pRcvFrame->MicroportMessageContext = MicroportMessageContext;
|
|
if (bMessageCopied)
|
|
{
|
|
pRcvFrame->pLocalMessageCopy = pMessage;
|
|
pRcvFrame->bMessageCopy = TRUE;
|
|
}
|
|
else
|
|
{
|
|
pRcvFrame->pMicroportMdl = pMdl;
|
|
pRcvFrame->bMessageCopy = FALSE;
|
|
}
|
|
|
|
NumberOfPackets = 0;
|
|
|
|
LengthRemaining = TotalLength;
|
|
|
|
//
|
|
// Temp ref to take care of multiple indications.
|
|
//
|
|
pRcvFrame->ReturnsPending = 1;
|
|
|
|
//
|
|
// Prepare NDIS packets for indicating up.
|
|
//
|
|
{
|
|
pRndisPacket = RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(pMessage);
|
|
|
|
//
|
|
// Allocate an NDIS packet to do the indication with.
|
|
//
|
|
NdisAllocatePacket(&Status, &pNdisPacket, pAdapter->ReceivePacketPool);
|
|
if (Status != NDIS_STATUS_SUCCESS)
|
|
{
|
|
pNdisPacket = NULL;
|
|
|
|
TRACE2(("ReceivePacketMessage: failed to allocate packet, Adapter %X\n",
|
|
pAdapter));
|
|
|
|
RNDISMP_INCR_STAT(pAdapter, RecvNoBuf);
|
|
bDiscardPkt = TRUE;
|
|
break;
|
|
}
|
|
|
|
NDIS_SET_PACKET_STATUS(pNdisPacket, ReceiveStatus);
|
|
|
|
switch (pAdapter->Medium)
|
|
{
|
|
case NdisMedium802_3:
|
|
NDIS_SET_PACKET_HEADER_SIZE(pNdisPacket, ETHERNET_HEADER_SIZE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
NdisAllocateBuffer(&BufferStatus,
|
|
&pNdisBuffer,
|
|
pAdapter->ReceiveBufferPool,
|
|
pRndisPacket,
|
|
TotalLength);
|
|
|
|
if (BufferStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
TRACE1(("ReceivePacketMessage: failed to allocate"
|
|
" buffer, Adapter %X\n", pAdapter));
|
|
NdisFreePacket(pNdisPacket);
|
|
RNDISMP_INCR_STAT(pAdapter, RecvNoBuf);
|
|
bDiscardPkt = TRUE;
|
|
break;
|
|
}
|
|
|
|
TRACE2(("Rcv: msg Pkt %d bytes\n", pMessage->MessageLength));
|
|
TRACEDUMP(("Rcv %d bytes\n", pMessage->MessageLength),
|
|
pRndisPacket,
|
|
MIN(pMessage->MessageLength, 32));
|
|
|
|
NdisChainBufferAtFront(pNdisPacket, pNdisBuffer);
|
|
|
|
//
|
|
// Add this to the array of packets to be indicated up.
|
|
//
|
|
PacketArray[NumberOfPackets] = pNdisPacket;
|
|
NumberOfPackets++;
|
|
RNDISMP_INCR_STAT(pAdapter, RecvOk);
|
|
|
|
pRcvResvd = PRNDISMP_RESERVED_FROM_RECV_PACKET(pNdisPacket);
|
|
pRcvResvd->pRcvFrame = pRcvFrame;
|
|
pRcvResvd->pVc = pVc;
|
|
|
|
TRACE1(("ReceivePacketMessageRaw: pRcvFrame %p/%d, pRndisPkt %p,"
|
|
" DataLen %d, Stat %x, Discard %d\n",
|
|
pRcvFrame, pRcvFrame->ReturnsPending,
|
|
pRndisPacket,
|
|
pRndisPacket->DataLength,
|
|
ReceiveStatus,
|
|
bDiscardPkt));
|
|
|
|
LengthRemaining -= pMessage->MessageLength;
|
|
|
|
NdisInterlockedIncrement(&pRcvFrame->ReturnsPending);
|
|
|
|
NdisMIndicateReceivePacket(pAdapter->MiniportAdapterHandle,
|
|
PacketArray,
|
|
NumberOfPackets);
|
|
|
|
if (ReceiveStatus == NDIS_STATUS_RESOURCES)
|
|
{
|
|
for (i = 0; i < NumberOfPackets; i++)
|
|
{
|
|
RNDISMP_INCR_STAT(pAdapter, RecvLowRes);
|
|
RndismpReturnPacket(pAdapter,
|
|
PacketArray[i]);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
//
|
|
// Remove temp ref we added at the top.
|
|
//
|
|
DereferenceRcvFrame(pRcvFrame, pAdapter);
|
|
|
|
}
|
|
while (FALSE);
|
|
|
|
if (bDiscardPkt)
|
|
{
|
|
//
|
|
// Some failure occured above.
|
|
//
|
|
if (pRcvFrame != NULL)
|
|
{
|
|
FreeReceiveFrame(pRcvFrame, pAdapter);
|
|
}
|
|
}
|
|
|
|
return (bDiscardPkt);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* IndicateStatusMessage */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Got an indicate status message, so send to upper layers */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* pAdapter - Pointer to our Adapter structure */
|
|
/* pMessage - pointer to RNDIS message */
|
|
/* pMdl - Pointer to MDL from microport */
|
|
/* TotalLength - length of complete message */
|
|
/* MicroportMessageContext - context for message from microport */
|
|
/* ReceiveStatus - used by microport to indicate it is low on resource */
|
|
/* bMessageCopied - is this a copy of the original message? */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* BOOLEAN - should the message be returned to the microport? */
|
|
/* */
|
|
/****************************************************************************/
|
|
BOOLEAN
|
|
IndicateStatusMessage(IN PRNDISMP_ADAPTER pAdapter,
|
|
IN PRNDIS_MESSAGE pMessage,
|
|
IN PMDL pMdl,
|
|
IN ULONG TotalLength,
|
|
IN NDIS_HANDLE MicroportMessageContext,
|
|
IN NDIS_STATUS ReceiveStatus,
|
|
IN BOOLEAN bMessageCopied)
|
|
{
|
|
PRNDIS_INDICATE_STATUS pRndisIndicateStatus;
|
|
|
|
TRACE3(("IndicateStatusMessage: Adapter %x, Mdl %x\n", pAdapter, pMdl));
|
|
|
|
// get a pointer to the indicate status message
|
|
pRndisIndicateStatus = RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(pMessage);
|
|
|
|
if (!pAdapter->Initing)
|
|
{
|
|
#if DBG
|
|
if (pRndisIndicateStatus->Status == NDIS_STATUS_MEDIA_CONNECT)
|
|
{
|
|
TRACE1(("Adapter %x: +++ Media Connect +++\n", pAdapter));
|
|
}
|
|
else if (pRndisIndicateStatus->Status == NDIS_STATUS_MEDIA_DISCONNECT)
|
|
{
|
|
TRACE1(("Adapter %x: --- Media Disconnect ---\n", pAdapter));
|
|
}
|
|
#endif // DBG
|
|
|
|
// send status indication to upper layers
|
|
NdisMIndicateStatus(pAdapter->MiniportAdapterHandle,
|
|
(NDIS_STATUS) pRndisIndicateStatus->Status,
|
|
MESSAGE_TO_STATUS_BUFFER(pRndisIndicateStatus),
|
|
pRndisIndicateStatus->StatusBufferLength);
|
|
|
|
// always have to indicate status complete
|
|
NdisMIndicateStatusComplete(pAdapter->MiniportAdapterHandle);
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// drop status indications that arrive when we are
|
|
// in the process of initializing.
|
|
//
|
|
TRACE1(("Adapter %x: indicated status %x when still initializing\n",
|
|
pAdapter, (NDIS_STATUS) pRndisIndicateStatus->Status));
|
|
}
|
|
|
|
return (TRUE);
|
|
} // IndicateStatusMessage
|
|
|
|
/****************************************************************************/
|
|
/* UnknownMessage */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Process a message with unknown message type. We simply drop it for now. */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* pAdapter - Pointer to our Adapter structure */
|
|
/* pMessage - pointer to RNDIS message */
|
|
/* pMdl - Pointer to MDL from microport */
|
|
/* TotalLength - length of complete message */
|
|
/* MicroportMessageContext - context for message from microport */
|
|
/* ReceiveStatus - used by microport to indicate it is low on resource */
|
|
/* bMessageCopied - is this a copy of the original message? */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* BOOLEAN - should the message be returned to the microport? */
|
|
/* */
|
|
/****************************************************************************/
|
|
BOOLEAN
|
|
UnknownMessage(IN PRNDISMP_ADAPTER pAdapter,
|
|
IN PRNDIS_MESSAGE pMessage,
|
|
IN PMDL pMdl,
|
|
IN ULONG TotalLength,
|
|
IN NDIS_HANDLE MicroportMessageContext,
|
|
IN NDIS_STATUS ReceiveStatus,
|
|
IN BOOLEAN bMessageCopied)
|
|
{
|
|
TRACE1(("Unknown Message on Adapter %x, type %x, MDL %x, uPContext %x\n",
|
|
pAdapter, pMessage->NdisMessageType, pMdl, MicroportMessageContext));
|
|
|
|
ASSERT(FALSE);
|
|
return TRUE;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* AllocateReceiveFrame */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Allocate a receive frame to keep context about a single RNDIS_PACKET */
|
|
/* message. */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* pAdapter - Pointer to our Adapter structure */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* PRNDISMP_RECV_DATA_FRAME */
|
|
/* */
|
|
/****************************************************************************/
|
|
PRNDISMP_RECV_DATA_FRAME
|
|
AllocateReceiveFrame(IN PRNDISMP_ADAPTER pAdapter)
|
|
{
|
|
PRNDISMP_RECV_DATA_FRAME pRcvFrame;
|
|
|
|
#ifndef DONT_USE_LOOKASIDE_LIST
|
|
pRcvFrame = (PRNDISMP_RECV_DATA_FRAME)
|
|
NdisAllocateFromNPagedLookasideList(&pAdapter->RcvFramePool);
|
|
#else
|
|
{
|
|
NDIS_STATUS Status;
|
|
|
|
Status = MemAlloc(&pRcvFrame, sizeof(RNDISMP_RECV_DATA_FRAME));
|
|
|
|
if (Status == NDIS_STATUS_SUCCESS)
|
|
{
|
|
NdisInterlockedIncrement(&RcvFrameAllocs);
|
|
}
|
|
else
|
|
{
|
|
pRcvFrame = NULL;
|
|
}
|
|
}
|
|
#endif // DONT_USE_LOOKASIDE_LIST
|
|
|
|
return (pRcvFrame);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* FreeReceiveFrame */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Allocate a receive frame to keep context about a single RNDIS_PACKET */
|
|
/* message. */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* pRcvFrame - Pointer to receive frame being freed */
|
|
/* pAdapter - Pointer to our Adapter structure */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* VOID */
|
|
/* */
|
|
/****************************************************************************/
|
|
VOID
|
|
FreeReceiveFrame(IN PRNDISMP_RECV_DATA_FRAME pRcvFrame,
|
|
IN PRNDISMP_ADAPTER pAdapter)
|
|
{
|
|
#ifndef DONT_USE_LOOKASIDE_LIST
|
|
NdisFreeToNPagedLookasideList(&pAdapter->RcvFramePool, pRcvFrame);
|
|
#else
|
|
MemFree(pRcvFrame, sizeof(RNDISMP_RECV_DATA_FRAME));
|
|
NdisInterlockedDecrement(&RcvFrameAllocs);
|
|
#endif // DONT_USE_LOOKASIDE_LIST
|
|
}
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
/* IndicateTimeout */
|
|
/****************************************************************************/
|
|
/* */
|
|
/* Routine Description: */
|
|
/* */
|
|
/* Timeout callback routine to handle all receive indications. The actual */
|
|
/* NDIS routines to indicate receives is done from here, since this */
|
|
/* function runs in the right environment for protocols on WinME. */
|
|
/* */
|
|
/* Arguments: */
|
|
/* */
|
|
/* SystemSpecific[1-3] - Ignored */
|
|
/* Context - Pointer to our Adapter structure */
|
|
/* */
|
|
/* Return: */
|
|
/* */
|
|
/* VOID */
|
|
/* */
|
|
/****************************************************************************/
|
|
VOID
|
|
IndicateTimeout(IN PVOID SystemSpecific1,
|
|
IN PVOID Context,
|
|
IN PVOID SystemSpecific2,
|
|
IN PVOID SystemSpecific3)
|
|
{
|
|
PRNDISMP_ADAPTER pAdapter;
|
|
PLIST_ENTRY pEntry;
|
|
PRNDISMP_RECV_MSG_CONTEXT pRcvMsg;
|
|
PRNDISMP_MSG_HANDLER_FUNC pMsgHandlerFunc;
|
|
PRNDIS_MESSAGE pMessage;
|
|
BOOLEAN bMessageCopied;
|
|
BOOLEAN bReturnToMicroport;
|
|
ULONG CurMsgs;
|
|
|
|
pAdapter = (PRNDISMP_ADAPTER)Context;
|
|
CHECK_VALID_ADAPTER(pAdapter);
|
|
|
|
ASSERT(pAdapter->IndicatingReceives == TRUE);
|
|
|
|
CurMsgs = 0;
|
|
RcvTimerCount++;
|
|
|
|
RNDISMP_ACQUIRE_ADAPTER_LOCK(pAdapter);
|
|
|
|
while (!IsListEmpty(&pAdapter->PendingRcvMessageList))
|
|
{
|
|
pEntry = RemoveHeadList(&pAdapter->PendingRcvMessageList);
|
|
|
|
RNDISMP_RELEASE_ADAPTER_LOCK(pAdapter);
|
|
|
|
CurMsgs++;
|
|
|
|
pRcvMsg = CONTAINING_RECORD(pEntry, RNDISMP_RECV_MSG_CONTEXT, Link);
|
|
|
|
RNDISMP_GET_MSG_HANDLER(pMsgHandlerFunc, pRcvMsg->pMessage->NdisMessageType);
|
|
|
|
bMessageCopied = pRcvMsg->bMessageCopied;
|
|
pMessage = pRcvMsg->pMessage;
|
|
|
|
bReturnToMicroport = (*pMsgHandlerFunc)(
|
|
pAdapter,
|
|
pMessage,
|
|
pRcvMsg->pMdl,
|
|
pRcvMsg->TotalLength,
|
|
pRcvMsg->MicroportMessageContext,
|
|
pRcvMsg->ReceiveStatus,
|
|
bMessageCopied);
|
|
|
|
//
|
|
// Are we done with the message?
|
|
//
|
|
if (bReturnToMicroport)
|
|
{
|
|
if (!bMessageCopied)
|
|
{
|
|
RNDISMP_RETURN_TO_MICROPORT(pAdapter,
|
|
pRcvMsg->pMdl,
|
|
pRcvMsg->MicroportMessageContext);
|
|
}
|
|
else
|
|
{
|
|
FreeRcvMessageCopy(pMessage);
|
|
}
|
|
}
|
|
|
|
MemFree(pRcvMsg, sizeof(RNDISMP_RECV_MSG_CONTEXT));
|
|
|
|
RNDISMP_ACQUIRE_ADAPTER_LOCK(pAdapter);
|
|
}
|
|
|
|
pAdapter->IndicatingReceives = FALSE;
|
|
|
|
RcvMaxPackets = MAX(RcvMaxPackets, CurMsgs);
|
|
|
|
RNDISMP_RELEASE_ADAPTER_LOCK(pAdapter);
|
|
|
|
|
|
} // IndicateTimeout
|
|
|
|
|
|
|