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/*++
Copyright (c) 1989-1993 Microsoft Corporation
Module Name:
send.c
Abstract:
This module contains code that implements the send engine for the IPX transport provider.
Environment:
Kernel mode
Revision History:
Sanjay Anand (SanjayAn) - August-25-1995 Bug Fixes - tagged [SA] Sanjay Anand (SanjayAn) - 22-Sept-1995 BackFill optimization changes added under #if BACK_FILL
--*/
#include "precomp.h"
#pragma hdrstop
//
// Using the macro for performance reasons. Should be taken out
// when NdisQueryPacket is optimized. In the near future (after PPC release)
// move this to a header file and use it at other places.
//
#define IPX_PACKET_HEAD(Pkt) (Pkt)->Private.Head
#if 0
#define IpxGetMdlChainLength(Mdl, Length) { \
PMDL _Mdl = (Mdl); \ *(Length) = 0; \ while (_Mdl) { \ *(Length) += MmGetMdlByteCount(_Mdl); \ _Mdl = _Mdl->Next; \ } \}#endif
VOIDIpxSendComplete( IN NDIS_HANDLE ProtocolBindingContext, IN PNDIS_PACKET NdisPacket, IN NDIS_STATUS NdisStatus )
/*++
Routine Description:
This routine is called by the I/O system to indicate that a connection- oriented packet has been shipped and is no longer needed by the Physical Provider.
Arguments:
ProtocolBindingContext - The ADAPTER structure for this binding.
NdisPacket/RequestHandle - A pointer to the NDIS_PACKET that we sent.
NdisStatus - the completion status of the send.
Return Value:
none.
--*/
{
PIPX_SEND_RESERVED Reserved = (PIPX_SEND_RESERVED)(NdisPacket->ProtocolReserved); PADAPTER Adapter = (PADAPTER)ProtocolBindingContext; PREQUEST Request; PADDRESS_FILE AddressFile; PDEVICE Device = IpxDevice; PBINDING Binding, pBinding= NULL; USHORT NewId, OldId; ULONG NewOffset, OldOffset; PIPX_HEADER IpxHeader, pIpxHeader; IPX_LOCAL_TARGET LocalTarget; PIO_STACK_LOCATION irpSp; BOOLEAN IsLoopback= FALSE; IPX_DEFINE_LOCK_HANDLE(LockHandle1)
#if DBG
if (Adapter != NULL) { ASSERT_ADAPTER(Adapter); }#endif
//
// See if this send was padded.
//
RealFunctionStart:; if (Reserved->PaddingBuffer) {
UINT Offset; //
// Check if we simply need to re-adjust the buffer length. This will
// happen if we incremented the buffer length in MAC.C.
//
if (Reserved->PreviousTail) { CTEAssert (NDIS_BUFFER_LINKAGE(Reserved->PaddingBuffer->NdisBuffer) == NULL); NDIS_BUFFER_LINKAGE (Reserved->PreviousTail) = (PNDIS_BUFFER)NULL; } else { PNDIS_BUFFER LastBuffer = (PNDIS_BUFFER)Reserved->PaddingBuffer; UINT BufferLength;
NdisQueryBufferOffset( LastBuffer, &Offset, &BufferLength ); NdisAdjustBufferLength( LastBuffer, (BufferLength - 1) ); }
Reserved->PaddingBuffer = NULL;
if (Reserved->Identifier < IDENTIFIER_IPX) { NdisRecalculatePacketCounts (NdisPacket); } }
FunctionStart:;
switch (Reserved->Identifier) {
case IDENTIFIER_IPX:
// #if DBG
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE;// #endif
//
// Check if this packet should be sent to all
// networks.
//
if (Reserved->u.SR_DG.CurrentNicId) {
if (NdisStatus == NDIS_STATUS_SUCCESS) { Reserved->u.SR_DG.Net0SendSucceeded = TRUE; }
OldId = Reserved->u.SR_DG.CurrentNicId;
IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); { ULONG Index = MIN (Device->MaxBindings, Device->HighestExternalNicId);
Binding = NULL;
for (NewId = OldId+1; NewId <= Index; NewId++) { if ((Binding = NIC_ID_TO_BINDING(Device, NewId)) && ((!Device->SingleNetworkActive) || (Device->ActiveNetworkWan == Binding->Adapter->MacInfo.MediumAsync)) && (Device->ForwarderBound || (!Device->DisableDialoutSap) || (!Binding->DialOutAsync) || (!Reserved->u.SR_DG.OutgoingSap))) {
//
// The binding exists, and we either are not configured
// for "SingleNetworkActive", or we are and this binding
// is the right type (i.e. the active network is wan and
// this is a wan binding, or the active network is not
// wan and this is not a wan binding), and if the FWD is
// not bound; and this is not an outgoing sap that we are
// trying to send with "DisableDialoutSap" set.
//
//
// 179436 - If forwarder is bound then ensure that we are picking a Binding that
// the forwarder has an open context on. Otherwise, go to the next good binding
//
if (Device->ForwarderBound) { if (GET_LONG_VALUE(Binding->ReferenceCount) == 2) { break; } } else {
break;
}
} } }
if (Binding != NULL && NewId <= MIN (Device->MaxBindings, Device->HighestExternalNicId)) { IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);
//
// Yes, we found another net to send it on, so
// move the header around if needed and do so.
//
Reserved->u.SR_DG.CurrentNicId = NewId; CTEAssert ((Reserved->DestinationType == DESTINATION_BCAST) || (Reserved->DestinationType == DESTINATION_MCAST));
#if 0
NewOffset = Binding->BcMcHeaderSize; OldOffset = Device->Bindings[OldId]->BcMcHeaderSize;
if (OldOffset != NewOffset) {
RtlMoveMemory( &Reserved->Header[NewOffset], &Reserved->Header[OldOffset], sizeof(IPX_HEADER));
}
IpxHeader = (PIPX_HEADER)(&Reserved->Header[NewOffset]);#endif
#if BACK_FILL
// This should be a normal packet. Backfill packet is never used for
// reserved other than IPX type
CTEAssert(!Reserved->BackFill);
// Check if this is backfilled. If so restore users Mdl back to its original shape
// Also, push the packet on to backfillpacket queue if the packet is not owned by the address
if (Reserved->BackFill) {
IPX_DEBUG(SEND, ("MSVa:%lx, UL:%d\n", Reserved->MappedSystemVa, Reserved->UserLength));
Reserved->HeaderBuffer->MappedSystemVa = Reserved->MappedSystemVa; Reserved->HeaderBuffer->ByteCount = Reserved->UserLength;#ifdef SUNDOWN
Reserved->HeaderBuffer->StartVa = (PCHAR)((ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa & ~(PAGE_SIZE-1)); // ByteOffset is & with 0xfff. PAGE_SIZE is unlikely to > 0x100000000, so we are save to convert to ulong.
Reserved->HeaderBuffer->ByteOffset = (ULONG) ((ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa & (PAGE_SIZE-1));#else
Reserved->HeaderBuffer->StartVa = (PCHAR)((ULONG)Reserved->HeaderBuffer->MappedSystemVa & ~(PAGE_SIZE-1)); Reserved->HeaderBuffer->ByteOffset = (ULONG)Reserved->HeaderBuffer->MappedSystemVa & (PAGE_SIZE-1);#endif
IPX_DEBUG(SEND, ("completeing back filled userMdl %x\n",Reserved->HeaderBuffer));
Reserved->HeaderBuffer->ByteOffset -= sizeof(IPX_HEADER);#ifdef SUNDOWN
(ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa-= sizeof(IPX_HEADER);#else
(ULONG)Reserved->HeaderBuffer->MappedSystemVa-= sizeof(IPX_HEADER);#endif
ASSERT((LONG)Reserved->HeaderBuffer->ByteOffset >= 0);
NdisAdjustBufferLength(Reserved->HeaderBuffer, (Reserved->HeaderBuffer->ByteCount+sizeof(IPX_HEADER))); IPX_DEBUG(SEND, ("Adjusting backfill userMdl Ipxheader %x RESD : %x\n",Reserved->HeaderBuffer, Reserved));
}#endif
IpxHeader = (PIPX_HEADER)(&Reserved->Header[MAC_HEADER_SIZE]);
FILL_LOCAL_TARGET(&LocalTarget, NewId); RtlCopyMemory(LocalTarget.MacAddress, IpxHeader->DestinationNode, 6);
if (Device->MultiCardZeroVirtual || (IpxHeader->DestinationSocket == SAP_SOCKET)) {
//
// SAP frames need to look like they come from the
// local network, not the virtual one. The same is
// true if we are running multiple nets without
// a virtual net.
//
*(UNALIGNED ULONG *)IpxHeader->SourceNetwork = Binding->LocalAddress.NetworkAddress; RtlCopyMemory (IpxHeader->SourceNode, Binding->LocalAddress.NodeAddress, 6); }
//
// Fill in the MAC header and submit the frame to NDIS.
//
// #if DBG
CTEAssert (!Reserved->SendInProgress); Reserved->SendInProgress = TRUE;// #endif
//
// [FW] Call the InternalSendHandler of the Forwarder
//
if (Device->ForwarderBound) {
//
// Call the InternalSend to filter the packet and get to know
// the correct adapter context
//
NTSTATUS ret; PUCHAR IpxHeader; PUCHAR Data; PNDIS_BUFFER HeaderBuffer; UINT TempHeaderBufferLength; UINT DataLength; #ifdef SUNDOWN
ULONG_PTR FwdAdapterCtx = INVALID_CONTEXT_VALUE; #else
ULONG FwdAdapterCtx = INVALID_CONTEXT_VALUE; #endif
if (GET_LONG_VALUE(Binding->ReferenceCount) == 2) { FwdAdapterCtx = Binding->FwdAdapterContext; }
//
// Figure out the IpxHeader - it is always at the top of the second MDL.
//
NdisQueryPacket (NdisPacket, NULL, NULL, &HeaderBuffer, NULL); NdisQueryBufferSafe (NDIS_BUFFER_LINKAGE(HeaderBuffer), &IpxHeader, &TempHeaderBufferLength, HighPagePriority);
//
// Data is always at the top of the third MDL.
//
NdisQueryBufferSafe (NDIS_BUFFER_LINKAGE(NDIS_BUFFER_LINKAGE(HeaderBuffer)), &Data, &DataLength, HighPagePriority);
if (IpxHeader != NULL && Data != NULL) {#ifdef SUNDOWN
// upper driver interface needs ULONG
ret = (*Device->UpperDrivers[IDENTIFIER_RIP].InternalSendHandler)( &LocalTarget, FwdAdapterCtx, NdisPacket, IpxHeader, Data, (ULONG) (REQUEST_INFORMATION(Reserved->u.SR_DG.Request)) + sizeof(IPX_HEADER), FALSE);#else
ret = (*Device->UpperDrivers[IDENTIFIER_RIP].InternalSendHandler)( &LocalTarget, FwdAdapterCtx, NdisPacket, IpxHeader, Data, REQUEST_INFORMATION(Reserved->u.SR_DG.Request) + sizeof(IPX_HEADER), FALSE);#endif
//
// The return shd not be a silent drop - we dont broadcast keepalives.
//
CTEAssert(ret != STATUS_DROP_SILENTLY);
if (ret == STATUS_SUCCESS) { //
// The adapter could have gone away and we have indicated to the Forwarder
// but the Forwarder has not yet closed the adapter.
// [ZZ] adapters do not go away now.
//
// what if the binding is NULL here? Can we trust the Forwarder to
// give us a non-NULL binding?
//
Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(&LocalTarget));
NewId = NIC_FROM_LOCAL_TARGET(&LocalTarget); if (Binding == NULL || GET_LONG_VALUE(Binding->ReferenceCount) == 1) { Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); FILL_LOCAL_TARGET(&Reserved->LocalTarget, NewId); goto FunctionStart; } else { goto send_packet; }
} else if (ret == STATUS_PENDING) { //
// LocalTarget will get filled up in InternalSendComplete
//
return; } } //
// else DISCARD
//
Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); goto FunctionStart;
} else {send_packet: //
// [FW] Use the frametype specific send handler
//
// if ((NdisStatus = IpxSendFrame(
// &LocalTarget,
// NdisPacket,
// REQUEST_INFORMATION(Reserved->u.SR_DG.Request) + sizeof(IPX_HEADER),
// sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) {
//
// Adapter = Binding->Adapter;
// goto FunctionStart;
// }
//
// return;
if ((IPX_NODE_EQUAL(IpxHeader->SourceNode, IpxHeader->DestinationNode)) && (*(UNALIGNED ULONG *)IpxHeader->SourceNetwork == *(UNALIGNED ULONG *)IpxHeader->DestinationNetwork)) { IPX_DEBUG(TEMP, ("It is self-directed. Loop it back ourselves (tdisenddatagram)\n")); IsLoopback = TRUE; }
pBinding = NIC_ID_TO_BINDING(Device, Reserved->LocalTarget.NicId);
if (pBinding) { if ((IPX_NODE_EQUAL(Reserved->LocalTarget.MacAddress, pBinding->LocalAddress.NodeAddress)) || (IPX_NODE_EQUAL(pBinding->LocalAddress.NodeAddress, IpxHeader->DestinationNode))) { IPX_DEBUG(TEMP, ("Source Net:%lx, Source Address: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x\n", *(UNALIGNED ULONG *)IpxHeader->SourceNetwork, IpxHeader->SourceNode[0], IpxHeader->SourceNode[1], IpxHeader->SourceNode[2], IpxHeader->SourceNode[3], IpxHeader->SourceNode[4], IpxHeader->SourceNode[5])); IPX_DEBUG(TEMP, ("Dest Net:%lx, DestAddress: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x \n", *(UNALIGNED ULONG *)IpxHeader->DestinationNetwork, IpxHeader->DestinationNode[0], IpxHeader->DestinationNode[1], IpxHeader->DestinationNode[2], IpxHeader->DestinationNode[3], IpxHeader->DestinationNode[4], IpxHeader->DestinationNode[5] ));
IPX_DEBUG(TEMP, ("Well, It is self-directed. Loop it back ourselves (TDISENDDATAGRAM - NIC_HANDLE is the same!)\n")); IsLoopback = TRUE; } }
IPX_DEBUG(TEMP, ("Sending a packet now Loopback - %x\n", IsLoopback)); if (IsLoopback) { //
// Enque this packet to the LoopbackQueue on the binding.
// If the LoopbackRtn is not already scheduled, schedule it.
//
IPX_DEBUG(LOOPB, ("Packet: %lx\n", NdisPacket));
//
// Recalculate packet counts here.
//
// NdisAdjustBufferLength (Reserved->HeaderBuffer, 17);
#if BACK_FILL
if (Reserved->BackFill) { //
// Set the Header pointer and chain the first MDL
//
Reserved->Header = (PCHAR)Reserved->HeaderBuffer->MappedSystemVa; NdisChainBufferAtFront(NdisPacket,(PNDIS_BUFFER)Reserved->HeaderBuffer); }#endif
NdisRecalculatePacketCounts (NdisPacket); IpxLoopbackEnque(NdisPacket, NIC_ID_TO_BINDING(Device, 1)->Adapter); IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); return;
} else {#ifdef SUNDOWN
if ((NdisStatus = (*Binding->SendFrameHandler)( Binding->Adapter, &LocalTarget, NdisPacket, (ULONG) (REQUEST_INFORMATION(Reserved->u.SR_DG.Request)) + sizeof(IPX_HEADER), sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) #else
if ((NdisStatus = (*Binding->SendFrameHandler)( Binding->Adapter, &LocalTarget, NdisPacket, REQUEST_INFORMATION(Reserved->u.SR_DG.Request) + sizeof(IPX_HEADER), sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) #endif
{ Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); goto RealFunctionStart; } IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); return; } } } else { IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1); //
// If any of the sends succeeded then return
// success on the datagram send, otherwise
// use the most recent failure status.
//
if (Reserved->u.SR_DG.Net0SendSucceeded) { NdisStatus = NDIS_STATUS_SUCCESS; } }
}
#if 0
//
// NOTE: We don't NULL out the linkage field of the
// HeaderBuffer, which will leave the old buffer chain
// hanging off it; but that is OK because if we reuse
// this packet we will replace that chain with the new
// one, and before we free it we NULL it out.
//
// I.e. we don't do this:
//
NDIS_BUFFER_LINKAGE (Reserved->HeaderBuffer) = NULL; NdisRecalculatePacketCounts (NdisPacket);#endif
#if 0
{ ULONG ActualLength; IpxGetMdlChainLength(NDIS_BUFFER_LINKAGE(Reserved->HeaderBuffer), &ActualLength); if (ActualLength != REQUEST_INFORMATION(Reserved->u.SR_DG.Request)) { DbgPrint ("IPX: At completion, IRP %lx has parameter length %d, buffer chain length %d\n", Reserved->u.SR_DG.Request, REQUEST_INFORMATION(Reserved->u.SR_DG.Request), ActualLength); DbgBreakPoint(); } }#endif
//
// Save these so we can free the packet.
//
Request = Reserved->u.SR_DG.Request; AddressFile = Reserved->u.SR_DG.AddressFile;
#if BACK_FILL
// Check if this is backfilled. If so restore users Mdl back to its original shape
// Also, push the packet on to backfillpacket queue if the packet is not owned by the address
if (Reserved->BackFill) {
IPX_DEBUG(SEND, ("MSVa:%lx, UL:%d\n", Reserved->MappedSystemVa, Reserved->UserLength)); Reserved->HeaderBuffer->MappedSystemVa = Reserved->MappedSystemVa; Reserved->HeaderBuffer->ByteCount = Reserved->UserLength;#ifdef SUNDOWN
Reserved->HeaderBuffer->StartVa = (PCHAR)((ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa & ~(PAGE_SIZE-1)); Reserved->HeaderBuffer->ByteOffset = (ULONG) ((ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa & (PAGE_SIZE-1));#else
Reserved->HeaderBuffer->StartVa = (PCHAR)((ULONG)Reserved->HeaderBuffer->MappedSystemVa & ~(PAGE_SIZE-1)); Reserved->HeaderBuffer->ByteOffset = (ULONG)Reserved->HeaderBuffer->MappedSystemVa & (PAGE_SIZE-1);#endif
ASSERT((LONG)Reserved->HeaderBuffer->ByteOffset >= 0);
IPX_DEBUG(SEND, ("completeing back filled userMdl %x\n",Reserved->HeaderBuffer));
NdisPacket->Private.ValidCounts = FALSE; NdisPacket->Private.Head = NULL; NdisPacket->Private.Tail = NULL; Reserved->HeaderBuffer = NULL;
if (Reserved->OwnedByAddress) {
// Reserved->Address->BackFillPacketInUse = FALSE;
InterlockedDecrement(&Reserved->Address->BackFillPacketInUse);
IPX_DEBUG(SEND, ("Freeing owned backfill %x\n", Reserved));
} else {
IPX_PUSH_ENTRY_LIST( &Device->BackFillPacketList, &Reserved->PoolLinkage, &Device->SListsLock); } } // not a back fill packet. Push it on sendpacket pool
else {
if (Reserved->OwnedByAddress) {
// Reserved->Address->SendPacketInUse = FALSE;
InterlockedDecrement(&Reserved->Address->SendPacketInUse);
} else {
IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->SListsLock);
}
}
#else
if (Reserved->OwnedByAddress) {
Reserved->Address->SendPacketInUse = FALSE;
} else {
IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->SListsLock);
}#endif
++Device->Statistics.PacketsSent;
//
// If this is a fast send irp, we bypass the file system and
// call the completion routine directly.
//
REQUEST_STATUS(Request) = NdisStatus; irpSp = IoGetCurrentIrpStackLocation( Request );
if ( irpSp->MinorFunction == TDI_DIRECT_SEND_DATAGRAM ) {
Request->CurrentLocation++, Request->Tail.Overlay.CurrentStackLocation++;
(VOID) irpSp->CompletionRoutine( NULL, Request, irpSp->Context );
} else { IpxCompleteRequest (Request); }
IpxFreeRequest(Device, Request);
IpxDereferenceAddressFileSync (AddressFile, AFREF_SEND_DGRAM);
break;
case IDENTIFIER_RIP_INTERNAL:
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE; break;
case IDENTIFIER_RIP_RESPONSE:
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE;
Reserved->Identifier = IDENTIFIER_IPX; IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->SListsLock);
IpxDereferenceDevice (Device, DREF_RIP_PACKET); break;
case IDENTIFIER_NB: case IDENTIFIER_SPX:
//
// See if this is an iterative send
//
if (OldId = Reserved->CurrentNicId) {
PNDIS_BUFFER HeaderBuffer; UINT TempHeaderBufferLength; PUCHAR Header; PIPX_HEADER IpxHeader; BOOLEAN fFwdDecides=FALSE;
if (NdisStatus == NDIS_STATUS_SUCCESS) { Reserved->Net0SendSucceeded = TRUE; }
//
// Figure out the IpxHeader - it is always at the top of the second MDL.
//
NdisQueryPacket (NdisPacket, NULL, NULL, &HeaderBuffer, NULL); NdisQueryBufferSafe (NDIS_BUFFER_LINKAGE(HeaderBuffer), &IpxHeader, &TempHeaderBufferLength, HighPagePriority);
if (IpxHeader == NULL) { DbgPrint("IpxSendComplete: NdisQuerryBufferSafe failed. Stop iterative send\n"); goto NoMoreSends; } //
// For Type 20 pkts, we let the Fwd decide the next Nic to send on, so we pass
// the old Nic itself and let the Fwd change it for us.
//
if ((Device->ForwarderBound) && (IpxHeader->PacketType == 0x14)) { NewId = NIC_FROM_LOCAL_TARGET(&Reserved->LocalTarget); fFwdDecides=TRUE;
Binding = NIC_ID_TO_BINDING(Device, NewId);
//
// 206647: It is likely that after we sent the previous packet, the binding on which we
// sent it is gone (due to an unbindadapter or whatever). if it is Null, get the previous
// good NICID and pass it to the forwarder to get the next one. We should be in sync
// with the forwarder and so it will tell us the next logical one it thinks is right.
//
//
if (!Binding) { USHORT Index = NewId;
while (Index-- > 0) { //using 0, since we should atleast have Loopback - nicid 1
if( Binding = NIC_ID_TO_BINDING(Device, Index)) { //
// So we found something good. Let's set newid to this Index and we should
// be all set.
//
NewId = Index; break; } } } IPX_DEBUG(SEND, ("SendComplete: IpxHeader has Type20: %lx\n", IpxHeader));
} else {
IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); { ULONG Index = MIN (Device->MaxBindings, Device->HighestExternalNicId);
Binding = NULL;
for (NewId = OldId+1; NewId <= Index; NewId++) { if (Binding = NIC_ID_TO_BINDING(Device, NewId)) { //
// Found next NIC to send on
//
//
// 179436 - If forwarder is bound then ensure that we are picking a Binding that
// the forwarder has an open context on. Otherwise, go to the next good binding
//
if (Device->ForwarderBound) { if (GET_LONG_VALUE(Binding->ReferenceCount) == 2) {
break; }
} else {
break;
}
} } } }
if (Binding != NULL && NewId <= MIN (Device->MaxBindings, Device->HighestExternalNicId)) {
IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);
//
// Yes, we found another net to send it on, so
// move the header around if needed and do so.
//
IPX_DEBUG(SEND, ("ISN iteration: OldId: %lx, NewId: %lx\n", OldId, NewId)); Reserved->CurrentNicId = NewId;
FILL_LOCAL_TARGET(&LocalTarget, NewId); RtlCopyMemory(LocalTarget.MacAddress, IpxHeader->DestinationNode, 6);
//
// [FW] Call the InternalSendHandler of the Forwarder
//
if (Device->ForwarderBound) {
//
// Call the InternalSend to filter the packet and get to know
// the correct adapter context
//
NTSTATUS ret; PUCHAR Data; UINT DataLength; #ifdef SUNDOWN
ULONG_PTR FwdAdapterCtx = INVALID_CONTEXT_VALUE; #else
ULONG FwdAdapterCtx = INVALID_CONTEXT_VALUE; #endif
if (GET_LONG_VALUE(Binding->ReferenceCount) == 2) { FwdAdapterCtx = Binding->FwdAdapterContext; }
ret = (*Device->UpperDrivers[IDENTIFIER_RIP].InternalSendHandler)( &LocalTarget, FwdAdapterCtx, NdisPacket, (PUCHAR)IpxHeader, ((PUCHAR)IpxHeader)+sizeof(IPX_HEADER), // the data starts after the IPX Header.
Reserved->PacketLength, TRUE); // iterate is true
//
// The return shd not be a silent drop - we dont broadcast keepalives.
//
CTEAssert(ret != STATUS_DROP_SILENTLY);
if (ret == STATUS_SUCCESS) { //
// The adapter could have gone away and we have indicated to the Forwarder
// but the Forwarder has not yet closed the adapter.
// [ZZ] adapters do not go away now.
//
// what if the binding is NULL here? Can we trust the Forwarder to
// give us a non-NULL binding?
//
Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(&LocalTarget));
NewId = NIC_FROM_LOCAL_TARGET(&LocalTarget); if (Binding == NULL || GET_LONG_VALUE(Binding->ReferenceCount) == 1) { if (Binding != NULL) { Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); } FILL_LOCAL_TARGET(&Reserved->LocalTarget, NewId); DbgPrint("IPX: FWD returns an invalid nic id %d, no more sends\n", NewId); goto NoMoreSends; } else { goto send_packet1; }
} else if (ret == STATUS_PENDING) { //
// LocalTarget will get filled up in InternalSendComplete
//
return; } //
// else DISCARD
//
Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS);
//
// If Fwd decides, then this is end of Nic list - complete the send.
//
if (fFwdDecides) { goto NoMoreSends; } else { goto FunctionStart; }
} else {#if DBG
NdisQueryPacket (NdisPacket, NULL, NULL, &HeaderBuffer, NULL); NdisQueryBufferSafe(HeaderBuffer, &Header, &TempHeaderBufferLength, LowPagePriority);
if (Header != NULL) { IpxHeader = (PIPX_HEADER)(&Header[Device->IncludedHeaderOffset]);
IPX_DEBUG(SEND, ("SendComplete: IpxHeader: %lx\n", IpxHeader)); }#endif
send_packet1:
FILL_LOCAL_TARGET(&Reserved->LocalTarget, NewId);
if ((IPX_NODE_EQUAL(IpxHeader->SourceNode, IpxHeader->DestinationNode)) && (*(UNALIGNED ULONG *)IpxHeader->SourceNetwork == *(UNALIGNED ULONG *)IpxHeader->DestinationNetwork)) { IPX_DEBUG(TEMP, ("It is self-directed. Loop it back ourselves (tdisenddatagram)\n")); IsLoopback = TRUE; }
pBinding = NIC_ID_TO_BINDING(Device, Reserved->LocalTarget.NicId);
if (pBinding) { if ((IPX_NODE_EQUAL(Reserved->LocalTarget.MacAddress, pBinding->LocalAddress.NodeAddress)) || (IPX_NODE_EQUAL(pBinding->LocalAddress.NodeAddress, IpxHeader->DestinationNode))) { IPX_DEBUG(TEMP, ("Source Net:%lx, Source Address: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x\n", *(UNALIGNED ULONG *)IpxHeader->SourceNetwork, IpxHeader->SourceNode[0], IpxHeader->SourceNode[1], IpxHeader->SourceNode[2], IpxHeader->SourceNode[3], IpxHeader->SourceNode[4], IpxHeader->SourceNode[5])); IPX_DEBUG(TEMP, ("Dest Net:%lx, DestAddress: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x \n", *(UNALIGNED ULONG *)IpxHeader->DestinationNetwork, IpxHeader->DestinationNode[0], IpxHeader->DestinationNode[1], IpxHeader->DestinationNode[2], IpxHeader->DestinationNode[3], IpxHeader->DestinationNode[4], IpxHeader->DestinationNode[5] ));
IPX_DEBUG(TEMP, ("Well, It is self-directed. Loop it back ourselves (TDISENDDATAGRAM - NIC_HANDLE is the same!)\n")); IsLoopback = TRUE; } }
IPX_DEBUG(TEMP, ("Sending a packet now. Loopback?:%x\n", IsLoopback)); if (IsLoopback) { //
// Enque this packet to the LoopbackQueue on the binding.
// If the LoopbackRtn is not already scheduled, schedule it.
//
IPX_DEBUG(LOOPB, ("Packet: %lx\n", NdisPacket));
//
// Recalculate packet counts here.
//
// NdisAdjustBufferLength (Reserved->HeaderBuffer, 17);
NdisRecalculatePacketCounts (NdisPacket); IpxLoopbackEnque(NdisPacket, NIC_ID_TO_BINDING(Device, 1)->Adapter);
IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); return;
} else {
//
// We don't need to so this since the macaddress is replaced in
// IpxSendFrame anyway. The LocalTarget is the same as the one on
// the original send - this is passed down for further sends.
//
// RtlCopyMemory(LocalTarget.MacAddress, IpxHeader->DestinationNode, 6);
//
// Fill in the MAC header and submit the frame to NDIS.
//
if ((NdisStatus = IpxSendFrame( &Reserved->LocalTarget, NdisPacket, Reserved->PacketLength, sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) {
Adapter = Binding->Adapter; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); goto FunctionStart; } IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS);
return; } } } else { IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);NoMoreSends: //
// If any of the sends succeeded then return
// success on the datagram send, otherwise
// use the most recent failure status.
//
if (Reserved->Net0SendSucceeded) { NdisStatus = NDIS_STATUS_SUCCESS; }
} }
//
// fall thru'
//
default: ASSERT((*Device->UpperDrivers[Reserved->Identifier].SendCompleteHandler) != NULL); (*Device->UpperDrivers[Reserved->Identifier].SendCompleteHandler)( NdisPacket, NdisStatus); break; }
} /* IpxSendComplete */
NTSTATUSIpxTdiSendDatagram( IN PDEVICE_OBJECT DeviceObject, IN PREQUEST Request )
/*++
Routine Description:
This routine performs the TdiSendDatagram request for the transport provider.
Arguments:
Request - Pointer to the request.
Return Value:
NTSTATUS - status of operation.
--*/
{
PADDRESS_FILE AddressFile; PADDRESS Address; PNDIS_PACKET Packet; PIPX_SEND_RESERVED Reserved; PSLIST_ENTRY s; TDI_ADDRESS_IPX UNALIGNED * RemoteAddress; TDI_ADDRESS_IPX TempAddress; TA_ADDRESS * AddressName; PTDI_CONNECTION_INFORMATION Information; PTDI_REQUEST_KERNEL_SENDDG Parameters; PBINDING Binding, pBinding = NULL; IPX_LOCAL_TARGET TempLocalTarget; PIPX_LOCAL_TARGET LocalTarget; PDEVICE Device = IpxDevice; UCHAR PacketType; NTSTATUS Status; PIPX_HEADER IpxHeader, pIpxHeader; NDIS_STATUS NdisStatus; USHORT LengthIncludingHeader; IPX_DEFINE_SYNC_CONTEXT (SyncContext) IPX_DEFINE_LOCK_HANDLE (LockHandle) PIO_STACK_LOCATION irpSp; \ BOOLEAN IsLoopback = FALSE; IPX_FIND_ROUTE_REQUEST routeEntry; PIPX_DATAGRAM_OPTIONS2 Options; KPROCESSOR_MODE PreviousMode;
IPX_DEFINE_LOCK_HANDLE(LockHandle1)
#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutRequests);#endif SNMP
//
// Do a quick check of the validity of the address.
//
AddressFile = (PADDRESS_FILE)REQUEST_OPEN_CONTEXT(Request);
IPX_BEGIN_SYNC (&SyncContext);
if ((AddressFile->Size == sizeof (ADDRESS_FILE)) && (AddressFile->Type == IPX_ADDRESSFILE_SIGNATURE) && ((Address = AddressFile->Address) != NULL)) {
IPX_GET_LOCK (&Address->Lock, &LockHandle);
if (AddressFile->State != ADDRESSFILE_STATE_CLOSING) { Parameters = (PTDI_REQUEST_KERNEL_SENDDG)REQUEST_PARAMETERS(Request);
//
// Previously it was kmode, so things are trusted.
//
Information = Parameters->SendDatagramInformation;
if (!REQUEST_SPECIAL_SEND(Request)) { AddressName = &((TRANSPORT_ADDRESS UNALIGNED *)(Information->RemoteAddress))->Address[0];
if ((AddressName->AddressType == TDI_ADDRESS_TYPE_IPX) && (AddressName->AddressLength >= sizeof(TDI_ADDRESS_IPX))) {
RemoteAddress = (TDI_ADDRESS_IPX UNALIGNED *)(AddressName->Address);
} else if ((RemoteAddress = IpxParseTdiAddress (Information->RemoteAddress)) == NULL) {
IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INVALID_ADDRESS;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_no_packet; } } else { ASSERT(OPEN_REQUEST_EA_LENGTH(Request) == sizeof(IPX_DATAGRAM_OPTIONS2)); Options = ((PIPX_DATAGRAM_OPTIONS2)(OPEN_REQUEST_EA_INFORMATION(Request))); RemoteAddress = (TDI_ADDRESS_IPX UNALIGNED *)(&Options->RemoteAddress); IPX_DEBUG(SEND, ("IpxTdiSendDatagram: Options buffer supplied as input buffer\n")); }
IPX_DEBUG (SEND, ("Send on %lx, network %lx socket %lx\n", Address, RemoteAddress->NetworkAddress, RemoteAddress->Socket));
#if 0
if (Parameters->SendLength > IpxDevice->RealMaxDatagramSize) {
IPX_DEBUG (SEND, ("Send %d bytes too large (%d)\n", Parameters->SendLength, IpxDevice->RealMaxDatagramSize));
REQUEST_INFORMATION(Request) = 0; IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INVALID_BUFFER_SIZE; goto error_send_no_packet; }#endif
//
// Every address has one packet committed to it, use that
// if possible, otherwise take one out of the pool.
//
#if BACK_FILL
// If the request is coming from the server, which resrves transport header space
// build the header in its space. Allocate a special packet to which does not contain
// mac and ipx headers in its reserved space.
if ((PMDL)REQUEST_NDIS_BUFFER(Request) && (((PMDL)REQUEST_NDIS_BUFFER(Request))->MdlFlags & MDL_NETWORK_HEADER) && (!(Information->OptionsLength < sizeof(IPX_DATAGRAM_OPTIONS))) && (RemoteAddress->NodeAddress[0] != 0xff)) {
//if (!Address->BackFillPacketInUse) {
if (InterlockedExchangeAdd(&Address->BackFillPacketInUse, 0) == 0) { //Address->BackFillPacketInUse = TRUE;
InterlockedIncrement(&Address->BackFillPacketInUse);
Packet = PACKET(&Address->BackFillPacket); Reserved = (PIPX_SEND_RESERVED)(Packet->ProtocolReserved); IPX_DEBUG(SEND, ("Getting owned backfill %x %x \n", Packet,Reserved));
}else {
s = IPX_POP_ENTRY_LIST( &Device->BackFillPacketList, &Device->SListsLock);
if (s != NULL) { goto GotBackFillPacket; }
//
// This function tries to allocate another packet pool.
//
s = IpxPopBackFillPacket(Device);
//
// Possibly we should queue the packet up to wait
// for one to become free.
//
if (s == NULL) { IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INSUFFICIENT_RESOURCES;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_no_packet; }
GotBackFillPacket:
Reserved = CONTAINING_RECORD (s, IPX_SEND_RESERVED, PoolLinkage); Packet = CONTAINING_RECORD (Reserved, NDIS_PACKET, ProtocolReserved[0]); IPX_DEBUG(SEND, ("getting backfill packet %x %x %x\n", s, Reserved, RemoteAddress->NodeAddress)); if(!Reserved->BackFill)DbgBreakPoint();
}
}else {
// if (!Address->SendPacketInUse) {
if (InterlockedExchangeAdd(&Address->SendPacketInUse, 0) == 0) { // Address->SendPacketInUse = TRUE;
InterlockedIncrement(&Address->SendPacketInUse);
Packet = PACKET(&Address->SendPacket); Reserved = (PIPX_SEND_RESERVED)(Packet->ProtocolReserved);
} else {
s = IPX_POP_ENTRY_LIST( &Device->SendPacketList, &Device->SListsLock);
if (s != NULL) { goto GotPacket; }
//
// This function tries to allocate another packet pool.
//
s = IpxPopSendPacket(Device);
//
// Possibly we should queue the packet up to wait
// for one to become free.
//
if (s == NULL) { IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INSUFFICIENT_RESOURCES;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_no_packet; }
GotPacket:
Reserved = CONTAINING_RECORD (s, IPX_SEND_RESERVED, PoolLinkage); Packet = CONTAINING_RECORD (Reserved, NDIS_PACKET, ProtocolReserved[0]); Reserved->BackFill = FALSE;
}
}
#else
if (!Address->SendPacketInUse) {
Address->SendPacketInUse = TRUE; Packet = PACKET(&Address->SendPacket); Reserved = (PIPX_SEND_RESERVED)(Packet->ProtocolReserved);
} else {
s = IPX_POP_ENTRY_LIST( &Device->SendPacketList, &Device->SListsLock);
if (s != NULL) { goto GotPacket; }
//
// This function tries to allocate another packet pool.
//
s = IpxPopSendPacket(Device);
//
// Possibly we should queue the packet up to wait
// for one to become free.
//
if (s == NULL) { IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INSUFFICIENT_RESOURCES; goto error_send_no_packet; }
GotPacket:
Reserved = CONTAINING_RECORD (s, IPX_SEND_RESERVED, PoolLinkage); Packet = CONTAINING_RECORD (Reserved, NDIS_PACKET, ProtocolReserved[0]);
}
#endif
IpxReferenceAddressFileLock (AddressFile, AFREF_SEND_DGRAM);
IPX_FREE_LOCK (&Address->Lock, LockHandle);
//
// Save this now while we have Parameters available.
//
REQUEST_INFORMATION(Request) = Parameters->SendLength; LengthIncludingHeader = (USHORT)(Parameters->SendLength + sizeof(IPX_HEADER));
#if 0
{ ULONG ActualLength; IpxGetMdlChainLength(REQUEST_NDIS_BUFFER(Request), &ActualLength); if (ActualLength != Parameters->SendLength) { DbgPrint ("IPX: IRP %lx has parameter length %d, buffer chain length %d\n", Request, Parameters->SendLength, ActualLength); DbgBreakPoint(); } }#endif
Reserved->u.SR_DG.AddressFile = AddressFile; Reserved->u.SR_DG.Request = Request; CTEAssert (Reserved->Identifier == IDENTIFIER_IPX);
//
// Set this to 0; this means the packet is not one that
// should be broadcast on all nets. We will change it
// later if it turns out this is the case.
//
Reserved->u.SR_DG.CurrentNicId = 0;
//
// We need this to track these packets specially.
//
Reserved->u.SR_DG.OutgoingSap = AddressFile->IsSapSocket;
//
// Add the MDL chain after the pre-allocated header buffer.
// NOTE: THIS WILL ONLY WORK IF WE EVENTUALLY CALL
// NDISRECALCULATEPACKETCOUNTS (which we do in IpxSendFrame).
//
//
#if BACK_FILL
if (Reserved->BackFill) { Reserved->HeaderBuffer = REQUEST_NDIS_BUFFER(Request);
//remove the ipx mdl from the packet.
Reserved->UserLength = Reserved->HeaderBuffer->ByteCount;
IPX_DEBUG(SEND, ("back filling userMdl Reserved %x %x\n", Reserved->HeaderBuffer, Reserved)); } else { NDIS_BUFFER_LINKAGE (NDIS_BUFFER_LINKAGE(Reserved->HeaderBuffer)) = REQUEST_NDIS_BUFFER(Request); }#else
NDIS_BUFFER_LINKAGE (NDIS_BUFFER_LINKAGE(Reserved->HeaderBuffer)) = REQUEST_NDIS_BUFFER(Request);#endif
//
// If IrpSp does not have a buffer for the right size for
// datagram options and there is no input buffer
//
if (!REQUEST_SPECIAL_SEND(Request) && (Information->OptionsLength < sizeof(IPX_DATAGRAM_OPTIONS))) {
//
// The caller did not supply the local target for this
// send, so we look it up ourselves.
//
UINT Segment;
//
// We calculate this now since we need to know
// if it is directed below.
//
if (RemoteAddress->NodeAddress[0] == 0xff) { // What about multicast?
if ((*(UNALIGNED ULONG *)(RemoteAddress->NodeAddress) != 0xffffffff) || (*(UNALIGNED USHORT *)(RemoteAddress->NodeAddress+4) != 0xffff)) { Reserved->DestinationType = DESTINATION_MCAST; } else { Reserved->DestinationType = DESTINATION_BCAST; } } else { Reserved->DestinationType = DESTINATION_DEF; // directed send
}
//
// If there are no options, then check if the
// caller is passing the packet type as a final byte
// in the remote address; if not use the default.
//
if (Information->OptionsLength == 0) { if (AddressFile->ExtendedAddressing) { PacketType = ((PUCHAR)(RemoteAddress+1))[0]; } else { PacketType = AddressFile->DefaultPacketType; } } else { PacketType = ((PUCHAR)(Information->Options))[0]; }
if ((Reserved->DestinationType != DESTINATION_DEF) && ((RemoteAddress->NetworkAddress == 0) || (Device->VirtualNetwork && (RemoteAddress->NetworkAddress == Device->SourceAddress.NetworkAddress)))) {
//
// Do we have any REAL adapters? If not, just get out now.
//
if (!Device->RealAdapters) { IPX_END_SYNC (&SyncContext); irpSp = IoGetCurrentIrpStackLocation( Request ); if ( irpSp->MinorFunction == TDI_DIRECT_SEND_DATAGRAM ) {
REQUEST_STATUS(Request) = STATUS_SUCCESS; Request->CurrentLocation++, Request->Tail.Overlay.CurrentStackLocation++;
(VOID) irpSp->CompletionRoutine( NULL, Request, irpSp->Context );
IpxFreeRequest (DeviceObject, Request); } IpxDereferenceAddressFileSync (AddressFile, AFREF_SEND_DGRAM);
return STATUS_SUCCESS;
}
//
// This packet needs to be broadcast to all networks.
// Make sure it is not too big for any of them.
//
if (Parameters->SendLength > Device->RealMaxDatagramSize) { IPX_DEBUG (SEND, ("Send %d bytes too large (%d)\n", Parameters->SendLength, Device->RealMaxDatagramSize)); Status = STATUS_INVALID_BUFFER_SIZE;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutMalformedRequests);#endif SNMP
goto error_send_with_packet; }
//
// If this is a broadcast to the virtual net, we
// need to construct a fake remote address which
// has network 0 in there instead.
//
if (Device->VirtualNetwork && (RemoteAddress->NetworkAddress == Device->SourceAddress.NetworkAddress)) {
RtlCopyMemory (&TempAddress, (PVOID)RemoteAddress, sizeof(TDI_ADDRESS_IPX)); TempAddress.NetworkAddress = 0; RemoteAddress = (TDI_ADDRESS_IPX UNALIGNED *)&TempAddress; }
//
// If someone is sending to the SAP socket and
// we are running with multiple cards without a
// virtual network, AND this packet is a SAP response,
// then we log an error to warn them that the
// system may not work as they like (since there
// is no virtual network to advertise, we use
// the first card's net/node as our local address).
// We only do this once per boot, using the
// SapWarningLogged variable to control that.
//
if ((RemoteAddress->Socket == SAP_SOCKET) && (!Device->SapWarningLogged) && (Device->MultiCardZeroVirtual)) {
PNDIS_BUFFER FirstBuffer; UINT FirstBufferLength; USHORT UNALIGNED * FirstBufferData;
if ((FirstBuffer = REQUEST_NDIS_BUFFER(Request)) != NULL) {
NdisQueryBufferSafe ( FirstBuffer, (PVOID *)&FirstBufferData, &FirstBufferLength, NormalPagePriority);
if (FirstBufferData != NULL) {
//
// The first two bytes of a SAP packet are the
// operation, 0x2 (in network order) is response.
//
if ((FirstBufferLength >= sizeof(USHORT)) && (*FirstBufferData == 0x0200)) {
Device->SapWarningLogged = TRUE;
IpxWriteGeneralErrorLog( Device->DeviceObject, EVENT_IPX_SAP_ANNOUNCE, 777, STATUS_NOT_SUPPORTED, NULL, 0, NULL); } } } }
//
// In this case we do not RIP but instead set the
// packet up so it is sent to each network in turn.
//
// Special case: If this packet is from the SAP
// socket and we are running with multiple cards
// without a virtual network, we only send this
// on the card with NIC ID 1, so we leave
// CurrentNicId set to 0.
//
//
// What if NicId 1 is invalid? Should scan
// for first valid one, fail send if none.
//
if ((Address->Socket != SAP_SOCKET) || (!Device->MultiCardZeroVirtual)) {
if (Device->SingleNetworkActive) {
if (Device->ActiveNetworkWan) { Reserved->u.SR_DG.CurrentNicId = Device->FirstWanNicId; } else { Reserved->u.SR_DG.CurrentNicId = Device->FirstLanNicId; }
} else {
//
// Is this the change I need to make?
//
Reserved->u.SR_DG.CurrentNicId = FIRST_REAL_BINDING;
}
Reserved->u.SR_DG.Net0SendSucceeded = FALSE;
//
// In this case, we need to scan for the first
// non-dialout wan socket.
//
if ((Device->DisableDialoutSap) && (Address->Socket == SAP_SOCKET)) {
PBINDING TempBinding;
CTEAssert (Reserved->u.SR_DG.CurrentNicId <= Device->ValidBindings); while (Reserved->u.SR_DG.CurrentNicId <= MIN (Device->MaxBindings, Device->ValidBindings)) {// No need to lock the access path since he just looks at it
//
TempBinding = NIC_ID_TO_BINDING(Device, Reserved->u.SR_DG.CurrentNicId); if ((TempBinding != NULL) && (!TempBinding->DialOutAsync)) { break;
} ++Reserved->u.SR_DG.CurrentNicId; } if (Reserved->u.SR_DG.CurrentNicId > MIN (Device->MaxBindings, Device->ValidBindings)) { //
// [SA] Bug #17273 return proper error mesg.
//
// Status = STATUS_DEVICE_DOES_NOT_EXIST;
Status = STATUS_NETWORK_UNREACHABLE;
goto error_send_with_packet; } }
FILL_LOCAL_TARGET(&TempLocalTarget, Reserved->u.SR_DG.CurrentNicId);
} else { FILL_LOCAL_TARGET(&TempLocalTarget, FIRST_REAL_BINDING); }
RtlCopyMemory(TempLocalTarget.MacAddress, RemoteAddress->NodeAddress, 6); IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(&TempLocalTarget)); IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);
//
// [FW] the localtarget shd be in the packet's reserved section
//
LocalTarget = &Reserved->LocalTarget; Reserved->LocalTarget = TempLocalTarget; } else {
//
// [FW] If router installed, call the Forwarder's FindRouteHandler.
// This returns a STATUS_SUCCESS if a route is available
//
if (Device->ForwarderBound) {
Status = (*Device->UpperDrivers[IDENTIFIER_RIP].FindRouteHandler) ( (PUCHAR)&RemoteAddress->NetworkAddress, RemoteAddress->NodeAddress, &routeEntry);
if (Status != STATUS_SUCCESS) {
IPX_DEBUG (SEND, ("RouteHandler failed, network: %lx\n", REORDER_ULONG(RemoteAddress->NetworkAddress))); goto error_send_with_packet;
} else {
//
// Fill in the LocalTarget from the RouteEntry
//
LocalTarget = &Reserved->LocalTarget;
Reserved->LocalTarget = routeEntry.LocalTarget;
IPX_DEBUG(SEND, ("IPX: SendFramePreFwd: LocalTarget is: %lx\n", Reserved->LocalTarget));
if (NIC_ID_TO_BINDING(Device, LocalTarget->NicId) == NULL || GET_LONG_VALUE(NIC_ID_TO_BINDING(Device, LocalTarget->NicId)->ReferenceCount) == 1) { IPX_DEBUG(SEND, ("IPX: SendFramePreFwd: FWD returned SUCCESS, Ref count is 1\n")); Status = NDIS_STATUS_SUCCESS; goto error_send_with_packet; }
if (Parameters->SendLength > NIC_ID_TO_BINDING(Device, LocalTarget->NicId)->RealMaxDatagramSize) {
IPX_DEBUG (SEND, ("Send %d bytes too large (%d)\n", Parameters->SendLength, NIC_ID_TO_BINDING(Device, LocalTarget->NicId)->RealMaxDatagramSize));
REQUEST_INFORMATION(Request) = 0; Status = STATUS_INVALID_BUFFER_SIZE;
goto error_send_with_packet; }
//
// [FW] we dont need to check this since the FWD does it for us.
//
/*
if ((Device->DisableDialoutSap) && (Address->Socket == SAP_SOCKET) && (NIC_ID_TO_BINDING(Device, LocalTarget->NicId)->DialOutAsync)) {
REQUEST_INFORMATION(Request) = 0; Status = STATUS_NETWORK_UNREACHABLE; goto error_send_with_packet; } */
IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget)); IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1); IPX_DEBUG(SEND, ("FindRoute for %02x-%02x-%02x-%02x-%02x-%02x returned %lx\n", LocalTarget->MacAddress[0], LocalTarget->MacAddress[1], LocalTarget->MacAddress[2], LocalTarget->MacAddress[3], LocalTarget->MacAddress[4], LocalTarget->MacAddress[5], Status));
}
} else { Segment = RipGetSegment((PUCHAR)&RemoteAddress->NetworkAddress);
IPX_GET_LOCK (&Device->SegmentLocks[Segment], &LockHandle);
//
// This call will return STATUS_PENDING if we need to
// RIP for the packet.
//
Status = RipGetLocalTarget( Segment, RemoteAddress, IPX_FIND_ROUTE_RIP_IF_NEEDED, &TempLocalTarget, NULL);
if (Status == STATUS_SUCCESS) {
//
// We found the route, TempLocalTarget is filled in.
//
IPX_FREE_LOCK (&Device->SegmentLocks[Segment], LockHandle); IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); if (NIC_FROM_LOCAL_TARGET(&TempLocalTarget) == (USHORT)LOOPBACK_NIC_ID) { IPX_DEBUG(LOOPB, ("Loopback TDI packet: remoteaddr: %lx\n", RemoteAddress)); IsLoopback = TRUE; //FILL_LOCAL_TARGET(&TempLocalTarget, FIRST_REAL_BINDING);
//DbgPrint("Real Adapters?:%lx\n", Device->RealAdapters);
} Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(&TempLocalTarget)); IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);
if (Binding == NULL || Parameters->SendLength > Binding->RealMaxDatagramSize) { IPX_DEBUG (SEND, ("Send %d bytes too large (%d)\n", Parameters->SendLength, Binding->RealMaxDatagramSize));
REQUEST_INFORMATION(Request) = 0; Status = STATUS_INVALID_BUFFER_SIZE;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutMalformedRequests);#endif SNMP
goto error_send_with_packet; }
if (!Device->ForwarderBound && (Device->DisableDialoutSap) && (Address->Socket == SAP_SOCKET) && (Binding->DialOutAsync)) {
REQUEST_INFORMATION(Request) = 0; //
// [SA] Bug #17273 return proper error mesg.
//
// Status = STATUS_DEVICE_DOES_NOT_EXIST;
Status = STATUS_NETWORK_UNREACHABLE; IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS);#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_with_packet; }
} else if (Status == STATUS_PENDING) {
//
// A RIP request went out on the network; we queue
// this packet for transmission when the RIP
// response arrives. First we fill in the IPX
// header; the only thing we don't know is where
// exactly to fill it in, so we choose
// the most common location.
//
IpxConstructHeader( &Reserved->Header[Device->IncludedHeaderOffset], LengthIncludingHeader, PacketType, RemoteAddress, &Address->LocalAddress);
//
// Adjust the 2nd mdl's size
//
NdisAdjustBufferLength(NDIS_BUFFER_LINKAGE(IPX_PACKET_HEAD(Packet)), sizeof(IPX_HEADER));
IPX_DEBUG (RIP, ("Queueing packet %lx\n", Reserved));
InsertTailList( &Device->Segments[Segment].WaitingForRoute, &Reserved->WaitLinkage);
IPX_FREE_LOCK (&Device->SegmentLocks[Segment], LockHandle); IPX_END_SYNC (&SyncContext);
return STATUS_PENDING;
} else {
IPX_FREE_LOCK (&Device->SegmentLocks[Segment], LockHandle);#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_with_packet;
}
//
// [FW] The localtarget shd be in the reserved section.
//
LocalTarget = &Reserved->LocalTarget; Reserved->LocalTarget = TempLocalTarget; } }
//
// [FW] moved to the conditions above so we save a copy in the RIP case
//
// LocalTarget = &TempLocalTarget;
//
// Now we know the local target, we can figure out
// the offset for the IPX header.
//
// Remember that we have got the binding with ref above....
IpxHeader = (PIPX_HEADER)&Reserved->Header[MAC_HEADER_SIZE];#if 0
if (Reserved->DestinationType == DESTINATION_DEF) { IpxHeader = (PIPX_HEADER)&Reserved->Header[Binding->DefHeaderSize]; } else { IpxHeader = (PIPX_HEADER)&Reserved->Header[Binding->BcMcHeaderSize]; }#endif
} else {
if (!REQUEST_SPECIAL_SEND(Request)) { PacketType = ((PUCHAR)(Information->Options))[0]; LocalTarget = &((PIPX_DATAGRAM_OPTIONS)(Information->Options))->LocalTarget; } else { ASSERT(OPEN_REQUEST_EA_LENGTH(Request) == sizeof(IPX_DATAGRAM_OPTIONS2)); if (OPEN_REQUEST_EA_LENGTH(Request) == sizeof(IPX_DATAGRAM_OPTIONS2)) { //IpxPrint0("IpxTdiSendDatagram: We have an input buffer of the right size\n");
} else { //IpxPrint1("IpxTdiSendDatagram: Wrong sized buffer. Buff size is =(%d)\n", OPEN_REQUEST_EA_LENGTH(Request));
Status = STATUS_INVALID_BUFFER_SIZE; goto error_send_with_packet; }
PacketType = Options->DgrmOptions.PacketType; LocalTarget = &Options->DgrmOptions.LocalTarget; }
//
// Calculate the binding and the correct location
// for the IPX header. We can do this at the same
// time as we calculate the DestinationType which
// saves an if like the one 15 lines up.
//
// Get lock to ref.
IPX_GET_LOCK1(&Device->BindAccessLock, &LockHandle1); //
// If a loopback packet, use the first binding as place holder
//
if (NIC_FROM_LOCAL_TARGET(LocalTarget) == (USHORT)LOOPBACK_NIC_ID) { IsLoopback = TRUE; }
Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget));
IPX_FREE_LOCK1(&Device->BindAccessLock, LockHandle1);
if (Binding == NULL) { DbgPrint("Binding %d does not exist.\n",NIC_FROM_LOCAL_TARGET(LocalTarget)); Status = STATUS_NOT_FOUND; goto error_send_with_packet; }
IpxReferenceBinding1(Binding, BREF_DEVICE_ACCESS); if (Parameters->SendLength > Binding->RealMaxDatagramSize) {
IPX_DEBUG (SEND, ("Send %d bytes too large (%d)\n", Parameters->SendLength, Binding->RealMaxDatagramSize));
REQUEST_INFORMATION(Request) = 0; Status = STATUS_INVALID_BUFFER_SIZE;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutMalformedRequests);#endif SNMP
goto error_send_with_packet; }
#if 0
//
// This shouldn't be needed because even WAN bindings
// don't go away once they are added.
//
if (Binding == NULL) { Status = STATUS_DEVICE_DOES_NOT_EXIST; goto error_send_with_packet; }#endif
if (RemoteAddress->NodeAddress[0] == 0xff) { // What about multicast?
if ((*(UNALIGNED ULONG *)(RemoteAddress->NodeAddress) != 0xffffffff) || (*(UNALIGNED USHORT *)(RemoteAddress->NodeAddress+4) != 0xffff)) { Reserved->DestinationType = DESTINATION_MCAST; } else { Reserved->DestinationType = DESTINATION_BCAST; }// IpxHeader = (PIPX_HEADER)&Reserved->Header[Binding->BcMcHeaderSize];
} else { Reserved->DestinationType = DESTINATION_DEF; // directed send
// IpxHeader = (PIPX_HEADER)&Reserved->Header[Binding->DefHeaderSize];
} IpxHeader = (PIPX_HEADER)&Reserved->Header[MAC_HEADER_SIZE];
}
// ++Device->TempDatagramsSent;
// Device->TempDatagramBytesSent += Parameters->SendLength;
ADD_TO_LARGE_INTEGER(&Device->Statistics.DatagramBytesSent, Parameters->SendLength); Device->Statistics.DatagramsSent++;
#if BACK_FILL
if (Reserved->BackFill) { Reserved->MappedSystemVa = Reserved->HeaderBuffer->MappedSystemVa; IpxHeader = (PIPX_HEADER)((PCHAR)Reserved->HeaderBuffer->MappedSystemVa - sizeof(IPX_HEADER)); Reserved->HeaderBuffer->ByteOffset -= sizeof(IPX_HEADER);
ASSERT((LONG)Reserved->HeaderBuffer->ByteOffset >= 0); #ifdef SUNDOWN
(ULONG_PTR)Reserved->HeaderBuffer->MappedSystemVa-= sizeof(IPX_HEADER);#else
(ULONG)Reserved->HeaderBuffer->MappedSystemVa-= sizeof(IPX_HEADER);#endif
IPX_DEBUG(SEND, ("Adjusting backfill userMdl Ipxheader %x %x \n",Reserved->HeaderBuffer,IpxHeader)); }#endif
//
// In case the packet is being sent to a SAP socket or
// we have multiple cards and a zero virtual net or
// it is a special send (on a nic), we need to use
// the binding's address instead of the virtual address.
//
if (Device->MultiCardZeroVirtual || (Address->LocalAddress.Socket == SAP_SOCKET) || (RemoteAddress->Socket == SAP_SOCKET) || (REQUEST_SPECIAL_SEND(Request))) {
//
// SAP frames need to look like they come from the
// local network, not the virtual one. The same is
// true if we are running multiple nets without
// a virtual network number.
//
// If this is a binding set member and a local target
// was provided we will send using the real node of
// the binding, even if it was a slave. This is
// intentional. If no local target was provided then
// this will not be a binding slave.
//
IpxConstructHeader( (PUCHAR)IpxHeader, LengthIncludingHeader, PacketType, RemoteAddress, &Binding->LocalAddress);
IpxHeader->SourceSocket = Address->SendSourceSocket;
} else {
IpxConstructHeader( (PUCHAR)IpxHeader, LengthIncludingHeader, PacketType, RemoteAddress, &Address->LocalAddress);
}
//
// Fill in the MAC header and submit the frame to NDIS.
//
// #if DBG
CTEAssert (!Reserved->SendInProgress); Reserved->SendInProgress = TRUE;// #endif
//
// Adjust the 2nd mdl's size
//
#if BACK_FILL
if (Reserved->BackFill) { NdisAdjustBufferLength(Reserved->HeaderBuffer, (Reserved->HeaderBuffer->ByteCount+sizeof(IPX_HEADER))); } else { NdisAdjustBufferLength(NDIS_BUFFER_LINKAGE(IPX_PACKET_HEAD(Packet)), sizeof(IPX_HEADER)); }#else
NdisAdjustBufferLength(NDIS_BUFFER_LINKAGE(IPX_PACKET_HEAD(Packet)), sizeof(IPX_HEADER));#endif
IPX_DEBUG(SEND, ("Packet Head %x\n",IPX_PACKET_HEAD(Packet)));
/*
if (Address->RtAdd) { REQUEST_OPEN_CONTEXT(Request) = (PVOID)(pRtInfo); } */
//
// [FW] If Forwarder installed, send the packet out for filtering
//
// STEFAN: 3/28/96:
// Dont filter IPXWAN config packets since the FWD does not have this adapter opened yet.
//
IPX_DEBUG(SEND, ("LocalAddress.Socket %x, IPXWAN_SOCKET\n", Address->LocalAddress.Socket, IPXWAN_SOCKET)); if (Address->LocalAddress.Socket != IPXWAN_SOCKET && Device->ForwarderBound) {
//
// Call the InternalSend to filter the packet and get to know
// the correct adapter context
//
NTSTATUS ret;
#ifdef SUNDOWN
ULONG_PTR FwdAdapterCtx = INVALID_CONTEXT_VALUE; #else
ULONG FwdAdapterCtx = INVALID_CONTEXT_VALUE; #endif
PUCHAR Data; UINT DataLength;
if (GET_LONG_VALUE(Binding->ReferenceCount) == 2) { FwdAdapterCtx = Binding->FwdAdapterContext; }
//
// Figure out the location of the data in the packet
// For BackFill packets, the data is in the first (and only) MDL.
// For others, it is in the third MDL.
//
if (Reserved->BackFill) { Data = (PUCHAR)(IpxHeader+sizeof(IPX_HEADER)); } else { NdisQueryBufferSafe(NDIS_BUFFER_LINKAGE(NDIS_BUFFER_LINKAGE(Reserved->HeaderBuffer)), &Data, &DataLength, HighPagePriority); }
if (Data != NULL) {
ret = (*Device->UpperDrivers[IDENTIFIER_RIP].InternalSendHandler)( LocalTarget, FwdAdapterCtx, Packet, (PUCHAR)IpxHeader, Data, LengthIncludingHeader, FALSE);
if (ret == STATUS_SUCCESS) { //
// The adapter could have gone away and we have indicated to the Forwarder
// but the Forwarder has not yet closed the adapter.
//
// what if the binding is NULL here? Can we trust the Forwarder to
// give us a non-NULL binding?
//
Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget)); // 302384
if (Binding == NULL) { DbgPrint("IPX:nwlnkfwd has returned invalid nic id (%d) in LocalTarget (%p).\n",NIC_FROM_LOCAL_TARGET(LocalTarget), LocalTarget); Status = STATUS_UNSUCCESSFUL; CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE; goto error_send_with_packet; }
if (GET_LONG_VALUE(Binding->ReferenceCount) == 1) { Status = NDIS_STATUS_SUCCESS;// #if DBG
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE;// #endif
goto error_send_with_packet; } else { IsLoopback = (NIC_FROM_LOCAL_TARGET(LocalTarget) == (USHORT)LOOPBACK_NIC_ID); goto send_packet; } } else if (ret == STATUS_PENDING) { //
// LocalTarget will get filled up in InternalSendComplete
//
//
// this is a NULL macro - include this?
//
IPX_END_SYNC (&SyncContext);
return STATUS_PENDING; } else if (ret == STATUS_DROP_SILENTLY) { IPX_DEBUG(SEND, ("IPX: SendFramePreFwd: FWD returned STATUS_DROP_SILENTLY - dropping pkt.\n")); Status = NDIS_STATUS_SUCCESS;
// #if DBG
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE;// #endif
goto error_send_with_packet; }
} //
// else DISCARD
//
//
// 179436 - If forwarder is bound then its likely that we still wanna send.
//
if (Device->ForwarderBound && (GET_LONG_VALUE(NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget))->ReferenceCount) == 1)) { goto send_packet;
}
// #if DBG
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE;// #endif
Status = STATUS_NETWORK_UNREACHABLE; goto error_send_with_packet;
} else {
//
// [FW] Jump here if the Forwarder gave us the go ahead on this send.
// We also come here to send if the Forwarder is not installed.
//
send_packet: //
// The workaround what is a NdisMSendX bug -
// IPX checks if it is the same network.
//
if (Reserved->BackFill) {
pIpxHeader = (PIPX_HEADER)((PCHAR)Reserved->HeaderBuffer->MappedSystemVa);
} else {
pIpxHeader = IpxHeader;
}
if ((IPX_NODE_EQUAL(pIpxHeader->SourceNode, pIpxHeader->DestinationNode)) && (*(UNALIGNED ULONG *)pIpxHeader->SourceNetwork == *(UNALIGNED ULONG *)pIpxHeader->DestinationNetwork)) { IPX_DEBUG(TEMP, ("It is self-directed. Loop it back ourselves (tdisenddatagram)\n")); IsLoopback = TRUE; }
pBinding = NIC_ID_TO_BINDING(Device, Reserved->LocalTarget.NicId);
if (pBinding) { if ((IPX_NODE_EQUAL(Reserved->LocalTarget.MacAddress, pBinding->LocalAddress.NodeAddress)) || (IPX_NODE_EQUAL(pBinding->LocalAddress.NodeAddress, pIpxHeader->DestinationNode))) { IPX_DEBUG(TEMP, ("Source Net:%lx, Source Address: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x\n", *(UNALIGNED ULONG *)pIpxHeader->SourceNetwork, pIpxHeader->SourceNode[0], pIpxHeader->SourceNode[1], pIpxHeader->SourceNode[2], pIpxHeader->SourceNode[3], pIpxHeader->SourceNode[4], pIpxHeader->SourceNode[5])); IPX_DEBUG(TEMP, ("Dest Net:%lx, DestAddress: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x \n", *(UNALIGNED ULONG *)pIpxHeader->DestinationNetwork, pIpxHeader->DestinationNode[0], pIpxHeader->DestinationNode[1], pIpxHeader->DestinationNode[2], pIpxHeader->DestinationNode[3], pIpxHeader->DestinationNode[4], pIpxHeader->DestinationNode[5] ));
IPX_DEBUG(TEMP, ("Well, It is self-directed. Loop it back ourselves (TDISENDDATAGRAM - NIC_HANDLE is the same!)\n")); IsLoopback = TRUE; } }
IPX_DEBUG(TEMP, ("Sending a packet now\n")); IPX_DEBUG(TEMP, ("**** RemoteAddress: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x LocalAddress: %2.2x-%2.2x-%2.2x-%2.2x-%2.2x-%2.2x \n", RemoteAddress->NodeAddress[0], RemoteAddress->NodeAddress[1], RemoteAddress->NodeAddress[2], RemoteAddress->NodeAddress[3], RemoteAddress->NodeAddress[4], RemoteAddress->NodeAddress[5], Reserved->LocalTarget.MacAddress[0], Reserved->LocalTarget.MacAddress[1], Reserved->LocalTarget.MacAddress[2], Reserved->LocalTarget.MacAddress[3], Reserved->LocalTarget.MacAddress[4], Reserved->LocalTarget.MacAddress[5] ));
if (IsLoopback) { //
// Enque this packet to the LoopbackQueue on the binding.
// If the LoopbackRtn is not already scheduled, schedule it.
//
IPX_DEBUG(LOOPB, ("Packet: %lx, Addr: %lx, Addr->SendPacket: %lx\n", Packet, Address, Address->SendPacket)); //
// Recalculate packet counts here.
//
// NdisAdjustBufferLength (Reserved->HeaderBuffer, 17);
#if BACK_FILL
if (Reserved->BackFill) { //
// Set the Header pointer and chain the first MDL
//
Reserved->Header = (PCHAR)Reserved->HeaderBuffer->MappedSystemVa; NdisChainBufferAtFront(Packet,(PNDIS_BUFFER)Reserved->HeaderBuffer); }#endif
NdisRecalculatePacketCounts (Packet); IpxLoopbackEnque(Packet, NIC_ID_TO_BINDING(Device, 1)->Adapter);
} else {
if ((NdisStatus = (*Binding->SendFrameHandler)( Binding->Adapter, LocalTarget, Packet, Parameters->SendLength + sizeof(IPX_HEADER), sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) {
IpxSendComplete( (NDIS_HANDLE)Binding->Adapter, Packet, NdisStatus); } }
IPX_END_SYNC (&SyncContext); IpxDereferenceBinding1(Binding, BREF_DEVICE_ACCESS); return STATUS_PENDING; }
} else {
//
// The address file state was closing.
//
IPX_FREE_LOCK (&Address->Lock, LockHandle); Status = STATUS_INVALID_HANDLE;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_no_packet;
}
} else {
//
// The address file didn't look like one.
//
Status = STATUS_INVALID_HANDLE;#ifdef SNMP
++IPX_MIB_ENTRY(Device, SysOutDiscards);#endif SNMP
goto error_send_no_packet; }
//
// Jump here if we want to fail the send and we have already
// allocated the packet and ref'ed the address file.
//
error_send_with_packet:
#if BACK_FILL
//
// Check if this is backfilled. If so, set the headerbuffer to NULL. Note that we dont need
// restore to restore the user's MDL since it was never touched when this error occurred.
// Also, push the packet on to backfillpacket queue if the packet is not owned by the address
//
if (Reserved->BackFill) {
Reserved->HeaderBuffer = NULL;
if (Reserved->OwnedByAddress) { // Reserved->Address->BackFillPacketInUse = FALSE;
InterlockedDecrement(&Reserved->Address->BackFillPacketInUse);
IPX_DEBUG(SEND, ("Freeing owned backfill %x\n", Reserved)); } else { IPX_PUSH_ENTRY_LIST( &Device->BackFillPacketList, &Reserved->PoolLinkage, &Device->SListsLock); } } else { // not a back fill packet. Push it on sendpacket pool
if (Reserved->OwnedByAddress) { // Reserved->Address->SendPacketInUse = FALSE;
InterlockedDecrement(&Reserved->Address->SendPacketInUse);
} else { IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->SListsLock);
} }#else
if (Reserved->OwnedByAddress) { Reserved->Address->SendPacketInUse = FALSE; } else { IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->SListsLock); }#endif
IpxDereferenceAddressFileSync (AddressFile, AFREF_SEND_DGRAM);
error_send_no_packet:
//
// Jump here if we fail before doing any of that.
//
IPX_END_SYNC (&SyncContext);
irpSp = IoGetCurrentIrpStackLocation( Request ); if ( irpSp->MinorFunction == TDI_DIRECT_SEND_DATAGRAM ) {
REQUEST_STATUS(Request) = Status; Request->CurrentLocation++, Request->Tail.Overlay.CurrentStackLocation++;
(VOID) irpSp->CompletionRoutine( NULL, Request, irpSp->Context );
IpxFreeRequest (DeviceObject, Request); }
return Status;
} /* IpxTdiSendDatagram */
#if DBG
VOIDIpxConstructHeader( IN PUCHAR Header, IN USHORT PacketLength, IN UCHAR PacketType, IN TDI_ADDRESS_IPX UNALIGNED * RemoteAddress, IN PTDI_ADDRESS_IPX LocalAddress )
/*++
Routine Description:
This routine constructs an IPX header in a packet.
Arguments:
Header - The location at which the header should be built.
PacketLength - The length of the packet, including the IPX header.
PacketType - The packet type of the frame.
RemoteAddress - The remote IPX address.
LocalAddress - The local IPX address.
Return Value:
None.
--*/
{
PIPX_HEADER IpxHeader = (PIPX_HEADER)Header;
IpxHeader->CheckSum = 0xffff; IpxHeader->PacketLength[0] = (UCHAR)(PacketLength / 256); IpxHeader->PacketLength[1] = (UCHAR)(PacketLength % 256); IpxHeader->TransportControl = 0; IpxHeader->PacketType = PacketType;
//
// These copies depend on the fact that the destination
// network is the first field in the 12-byte address.
//
RtlCopyMemory(IpxHeader->DestinationNetwork, (PVOID)RemoteAddress, 12); RtlCopyMemory(IpxHeader->SourceNetwork, LocalAddress, 12);
} /* IpxConstructHeader */#endif
//
// [FW]
//
VOIDIpxInternalSendComplete( IN PIPX_LOCAL_TARGET LocalTarget, IN PNDIS_PACKET Packet, IN ULONG PacketLength, IN NTSTATUS Status )/*++
Routine Description:
This routine is called by the Kernel Forwarder to indicate that a pending internal send to it has completed.
Arguments:
LocalTarget - if Status is OK, this has the local target for the send.
Packet - A pointer to the NDIS_PACKET that we sent.
PacketLength - length of the packet (including the IPX header)
Can IpxSendFrame use the local var. PktLength instead? What about IpxSendFrameXXX (frame specific)
Status - the completion status of the send - STATUS_SUCCESS or STATUS_NETWORK_UNREACHABLE
Return Value:
none.
--*/{ PDEVICE Device=IpxDevice; PIPX_SEND_RESERVED Reserved = (PIPX_SEND_RESERVED)(Packet->ProtocolReserved); PBINDING Binding; NDIS_STATUS NdisStatus; PIO_STACK_LOCATION irpSp; PREQUEST Request; PADDRESS_FILE AddressFile;
switch (Reserved->Identifier) { case IDENTIFIER_IPX:
//
// datagrams can be sent to the frame-specific handlers directly
//
// Make this change in SendComplete too
//
if ((Status == STATUS_SUCCESS) && (Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget))) && (GET_LONG_VALUE(Binding->ReferenceCount) == 2)) {
if (NIC_FROM_LOCAL_TARGET(LocalTarget) == (USHORT)LOOPBACK_NIC_ID) {
//
// Enque this packet to the LoopbackQueue on the binding.
// If the LoopbackRtn is not already scheduled, schedule it.
//
IPX_DEBUG(LOOPB, ("Packet: %lx \n", Packet));
//
// Recalculate packet counts here.
//
// NdisAdjustBufferLength (Reserved->HeaderBuffer, 17);
#if BACK_FILL
if (Reserved->BackFill) { //
// Set the Header pointer and chain the first MDL
//
Reserved->Header = (PCHAR)Reserved->HeaderBuffer->MappedSystemVa; NdisChainBufferAtFront(Packet,(PNDIS_BUFFER)Reserved->HeaderBuffer); }#endif
NdisRecalculatePacketCounts (Packet); IpxLoopbackEnque(Packet, NIC_ID_TO_BINDING(Device, 1)->Adapter);
} else { if ((NdisStatus = (*Binding->SendFrameHandler)( Binding->Adapter, LocalTarget, Packet, PacketLength, sizeof(IPX_HEADER))) != NDIS_STATUS_PENDING) { //
// Call SendComplete here so it can send broadcasts over other
// Nic's and remove any padding if used.
//
IpxSendComplete((NDIS_HANDLE)Binding->Adapter, Packet, NdisStatus); } } } else { //
// DISCARD was returned - complete the IRP
//
NdisStatus = STATUS_NETWORK_UNREACHABLE;
//
// We need to free the packet and deref the addressfile...
//
// #if DBG
CTEAssert (Reserved->SendInProgress); Reserved->SendInProgress = FALSE; // #endif
if (Reserved->OwnedByAddress) { Reserved->Address->SendPacketInUse = FALSE; } else { IPX_PUSH_ENTRY_LIST( &Device->SendPacketList, &Reserved->PoolLinkage, &Device->Lock); }
AddressFile = Reserved->u.SR_DG.AddressFile; IpxDereferenceAddressFileSync (AddressFile, AFREF_SEND_DGRAM);
Request = Reserved->u.SR_DG.Request; REQUEST_STATUS(Request) = NdisStatus; irpSp = IoGetCurrentIrpStackLocation( Request );
//
// If this is a fast send irp, we bypass the file system and
// call the completion routine directly.
//
if ( irpSp->MinorFunction == TDI_DIRECT_SEND_DATAGRAM ) { Request->CurrentLocation++, Request->Tail.Overlay.CurrentStackLocation++;
(VOID) irpSp->CompletionRoutine( NULL, Request, irpSp->Context );
} else { IpxCompleteRequest (Request); } IpxFreeRequest(Device, Request); }
break;
default: //
// for all other packet types
//
if ((Status == STATUS_SUCCESS) && (Binding = NIC_ID_TO_BINDING(Device, NIC_FROM_LOCAL_TARGET(LocalTarget))) && (GET_LONG_VALUE(Binding->ReferenceCount) == 2)) { //
// IncludedHeaderLength is only used to check for RIP packets (==0)
// so IPX_HEADER size is OK. Should finally remove this parameter.
//
if (NIC_FROM_LOCAL_TARGET(LocalTarget) == (USHORT)LOOPBACK_NIC_ID) {
//
// Enque this packet to the LoopbackQueue on the binding.
// If the LoopbackRtn is not already scheduled, schedule it.
//
IPX_DEBUG(LOOPB, ("Packet: %lx\n", Packet));
//
// Recalculate packet counts here.
//
// NdisAdjustBufferLength (Reserved->HeaderBuffer, 17);
#if BACK_FILL
if (Reserved->BackFill) { //
// Set the Header pointer and chain the first MDL
//
Reserved->Header = (PCHAR)Reserved->HeaderBuffer->MappedSystemVa; NdisChainBufferAtFront(Packet,(PNDIS_BUFFER)Reserved->HeaderBuffer); }#endif
NdisRecalculatePacketCounts (Packet); IpxLoopbackEnque(Packet, NIC_ID_TO_BINDING(Device, 1)->Adapter);
} else { NdisStatus = IpxSendFrame(LocalTarget, Packet, PacketLength, sizeof(IPX_HEADER));
if (NdisStatus != NDIS_STATUS_PENDING) { IPX_DEBUG (SEND, ("IpxSendFrame status %lx on NICid %lx, packet %lx \n", NdisStatus, LocalTarget->NicId, Packet)); goto error_complete; } } } else {
//
// DISCARD was returned - call the upper driver's sendcomplete with error
//
//
// Else return STATUS_NETWORK_UNREACHABLE
//
NdisStatus = STATUS_NETWORK_UNREACHABLE;
error_complete:
IPX_DEBUG (SEND, ("Calling the SendCompleteHandler of tightly bound driver with status: %lx\n", NdisStatus)); (*Device->UpperDrivers[Reserved->Identifier].SendCompleteHandler)( Packet, NdisStatus); } }}
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