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protocol.c
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// KIP (NT-kernel TCP/IP implementation library)
//
// module: protocol.c
// $Revision: 79 $
// $Date: 2012-01-18 12:59:39 +0400 (Ср, 18 янв 2012) $
// description:
// protocol interface functions
#include "project.h"
#include "lwip\inet.h"
#include "lwip\tcpip.h"
#include "ethernetif.h"
#include "protocol.h"
#include "filter.h"
#include "lwip\tcp.h"
#include "lwip\dns.h"
//#define _DBG_PACKET_DUMP
#include "dumppkt.h"
//disable warning about deprecated functions
#pragma warning(disable : 4995)
#pragma warning(disable : 4996)
#define MODULE_TAG 'ORPK'
#define REG_KEY_SERVICES L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\"
#define REG_KEY_TCP_ADAPTERS L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\TCPIP\\Parameters\\Adapters"
#define REG_KEY_IPCONFIG L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\services\\Tcpip\\Parameters\\Interfaces\\{06F8BDFC-C24C-40BA-86BA-67CC86826CDF}"
#define REG_VALUE_IPCONFIG L"IpConfig"
#define REG_VALUE_IPADDRESS L"IPAddress"
#define REG_VALUE_DHCP_IPADDRESS L"DhcpIPAddress"
#define REG_VALUE_SUBNETMASK L"SubnetMask"
#define REG_VALUE_DHCP_SUBNETMASK L"DhcpSubnetMask"
#define REG_VALUE_DHCP_GATEWAY L"DhcpDefaultGateway"
#define REG_VALUE_GATEWAY L"DefaultGateway"
#define REG_VALUE_ENABLEDHCP L"EnableDHCP"
#define REG_VALUE_DNS L"NameServer"
#define REG_VALUE_DHCP_DNS L"DhcpNameServer"
// global lookaside for packet data
static NPAGED_LOOKASIDE_LIST g_DataLookaside;
static NPAGED_LOOKASIDE_LIST g_PacketDescriptorLookaside;
// packet list
static KSPIN_LOCK g_PacketListSpinLock;
static LIST_ENTRY g_PacketList;
// statistics
static LONG g_PacketsAllocated = 0;
static LONG g_AllocationFailure = 0;
static BOOLEAN g_ProtocolInitialized = FALSE;
#ifdef ALLOC_PRAGMA
#pragma alloc_text (INIT, ProtocolInitializeSubsystem)
#endif
//***********************************************************************************
// Name: ProtocolInitializeSubsystem
//
// Description:
// initializes global structures
//
// Return value:
// operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolInitializeSubsystem(
VOID
)
{
KeInitializeSpinLock( & g_PacketListSpinLock );
InitializeListHead( &g_PacketList );
NdisInitializeNPagedLookasideList(
&g_PacketDescriptorLookaside,
NULL,NULL,0,
sizeof(KIP_PACKET_DESCRIPTOR),
MODULE_TAG,
0
);
NdisInitializeNPagedLookasideList(
&g_DataLookaside,
NULL,NULL,0,
MAX_ETHER_SIZE,
MODULE_TAG,
0
);
// initialize lwip
LibIPInitialize();
g_ProtocolInitialized = TRUE;
return NDIS_STATUS_SUCCESS;
}
VOID
ProtocolReleaseSubsystem(
VOID
)
{
if ( g_ProtocolInitialized ){
LibIPShutdown();
// TODO: free lists and all data
NdisDeleteNPagedLookasideList(&g_PacketDescriptorLookaside);
NdisDeleteNPagedLookasideList(&g_DataLookaside);
}
}
//////////////////////////////////////////////////////////////////////////
// interface functions
//***********************************************************************************
// Name: ProtocolRegisterInterface
//
// Description:
// registers network interface in lwip
//
// Return value:
// none
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
VOID
ProtocolRegisterInterface(
IN PKIP_NDIS_PROTOCOL pProtocol,
IN ULONG IpAddress,
IN ULONG IpMask,
IN ULONG IpGateWay,
IN BOOLEAN EnableDHCP
)
{
struct ip_addr ipaddr;
struct ip_addr netmask;
struct ip_addr gw;
ipaddr.addr = IpAddress;
netmask.addr = IpMask;
gw.addr = IpGateWay;
pProtocol->EnableDHCP = EnableDHCP;
pProtocol->PSendBuffer = ProtocolSendPBuffer;
// register lwip interface
netifapi_netif_add(
&pProtocol->IIF,
&ipaddr,
&netmask,
&gw,
pProtocol,
ethernetif_init,
tcpip_input
);
// sync with init thread
// TODO:
if ( IpAddress != 0 ){
netifapi_netif_set_up(&pProtocol->IIF,1);
netifapi_netif_set_default(&pProtocol->IIF,1);
}else{
netifapi_netif_set_down(&pProtocol->IIF,1);
}
}
//***********************************************************************************
// Name: ProtocolUpdateInterfaceIPInformation
//
// Description:
// Updates ip info for lwip interface
//
// Return value:
// none
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
VOID
ProtocolUpdateInterfaceIPInformation(
IN PKIP_NDIS_ADAPTER pAdapter,
IN ULONG IpAddress,
IN ULONG IpMask,
IN ULONG IpGateWay
)
{
struct ip_addr ipaddr;
struct ip_addr netmask;
struct ip_addr gw;
ipaddr.addr = IpAddress;
netmask.addr = IpMask;
gw.addr = IpGateWay;
netifapi_netif_set_addr(
&pAdapter->Interface.Protocol.IIF,
&ipaddr,
&netmask,
&gw
);
//if (ipaddr.addr != 0)
//{
// netif_set_up(&pAdapter->Protocol.IIF);
// //TODO: default???
// netif_set_default(&pAdapter->Protocol.IIF);
//}
//else
//{
// netif_set_down(&pAdapter->Protocol.IIF);
//}
}
//***********************************************************************************
// Name: ProtocolInitialize
//
// Description:
// initializes protocol variables
//
// Return value:
// Operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolInitialize(
IN PKIP_NDIS_MINIPORT pMiniport,
IN PKIP_NDIS_PROTOCOL pProtocol
)
{
NTSTATUS ntStatus = NDIS_STATUS_SUCCESS;
NET_BUFFER_LIST_POOL_PARAMETERS NetBufferListPoolParam;
NET_BUFFER_POOL_PARAMETERS NetBufferPoolParam;
//
// initialize protocol
//
if ( pMiniport->MajorNdisVersion <= 5 ){
//
// Initialize internal queues
//
NdisInitializeListHead ( &pProtocol->PendingTransfertData );
NdisAllocateSpinLock ( &pProtocol->PendingTransfertLock );
// allocate pools lock for ndis4
NdisAllocateSpinLock ( &pProtocol->PacketPoolLock );
//
// allocate packet pool for sent packets
//
NdisAllocatePacketPool(
&ntStatus,
&pProtocol->PacketPoolHandle,
TRANSMIT_PACKET_GROW_AMOUNT,
sizeof(NDIS_PACKET_RESERVED)
);
if ( ntStatus == NDIS_STATUS_SUCCESS )
{
//
// Allocate buffer pool for sent packets
//
NdisAllocateBufferPool(
&ntStatus,
&pProtocol->BufferPoolHandle,
TRANSMIT_PACKET_GROW_AMOUNT
);
if ( ntStatus != NDIS_STATUS_SUCCESS ) {
NdisFreePacketPool( &pProtocol->PacketPoolHandle );
DBGLOG(( LCriticalError, "%08X=NdisAllocateBufferPool failed\n", ntStatus ));
}
}else{
DBGLOG(( LCriticalError, "%08X=NdisAllocatePacketPool failed\n", ntStatus ));
}
}else{
// allocate net buffer pool
NetBufferListPoolParam.Header.Type = NDIS_OBJECT_TYPE_DEFAULT;
NetBufferListPoolParam.Header.Revision = NET_BUFFER_LIST_POOL_PARAMETERS_REVISION_1;
NetBufferListPoolParam.Header.Size = NDIS_SIZEOF_NET_BUFFER_LIST_POOL_PARAMETERS_REVISION_1;
NetBufferListPoolParam.ProtocolId = NDIS_PROTOCOL_ID_DEFAULT;
NetBufferListPoolParam.fAllocateNetBuffer = TRUE;
NetBufferListPoolParam.ContextSize = 0;
NetBufferListPoolParam.PoolTag = MODULE_TAG1;
NetBufferListPoolParam.DataSize = MAX_ETHER_SIZE;
pProtocol->NdisNetBufferListPool =
NdisAllocateNetBufferListPoolPtr(
pMiniport->Ndis6.NdisMiniportDriverHandle,
&NetBufferListPoolParam
);
if (pProtocol->NdisNetBufferListPool == NULL) {
DBGLOG(( LCriticalError, "NdisAllocateNetBufferListPool failed\n" ));
ntStatus = NDIS_STATUS_RESOURCES;
}
}
return ntStatus;
}
// loads ip address/mask/gate from registry
ULONG
RegReadIpValue(
IN HANDLE hKey,
IN PWCHAR ValueName,
IN BOOLEAN MSZ
)
{
NTSTATUS ntStatus;
UNICODE_STRING usValue = { 0 };
ANSI_STRING asValue = { 0 };
ULONG Value;
ntStatus =
(MSZ ? RegReadStringFromMultiSZ : RegReadStringValue)(
hKey,
ValueName,
&usValue
);
if ( NT_SUCCESS ( ntStatus ) ){
RtlUnicodeStringToAnsiStringInplace( &usValue, &asValue );
Value = inet_addr ( asValue.Buffer );
}
if ( usValue.Buffer != NULL ){
ExFreePoolWithTag( usValue.Buffer, MODULE_TAG );
usValue.Buffer = NULL;
}
return Value;
}
//***********************************************************************************
// Name: ProtocolLoadIpConfig
//
// Description:
// loads ipconfig from registry
//
// Return value:
// Operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolLoadIpConfig(
IN PKIP_NDIS_ADAPTER pAdapter,
IN PKIP_NDIS_PROTOCOL pProtocol,
IN PULONG pIpAddress,
IN PULONG pIpMask,
IN PULONG pIpGateWay,
IN PULONG pEnableDHCP
)
{
PNDIS_MINIPORT_BLOCK pNdisMiniport = (PNDIS_MINIPORT_BLOCK)pAdapter->NdisMiniportHandle;
UNICODE_STRING MinportName = NDIS_GetMiniportName(pAdapter->NdisMiniportHandle);
const UNICODE_STRING usDevice = RTL_CONSTANT_STRING(L"\\Device");
UNICODE_STRING usAdapterConfig = {0}; //Tcpip\Parameters\Interfaces\{06F8BDFC-C24C-40BA-86BA-67CC86826CDF}
UNICODE_STRING usIpConfigValue = {0};
UNICODE_STRING usNameServers = {0};
PWCHAR szStringBuffer = NULL;
ULONG BufferSize = 0;
ULONG EnableDHCP = 0;
ULONG IpAddress = 0, IpMask = 0, IpGateWay = 0;
ULONG IpNameServer = 0;
BOOLEAN fbResult;
NTSTATUS ntStatus = STATUS_SUCCESS;
HANDLE hKey = NULL;
do
{
// construct adapter key
// Tcpip\Parameters\Adapters\{06F8BDFC-C24C-40BA-86BA-67CC86826CDF}
fbResult =
RtlPrefixUnicodeString(
&usDevice,
&MinportName,
TRUE
);
if ( fbResult ){
MinportName.Buffer = (PWCHAR)((CHAR*)MinportName.Buffer + usDevice.Length );
MinportName.Length -= usDevice.Length;
MinportName.MaximumLength -= usDevice.Length;
}
BufferSize = sizeof(REG_KEY_IPCONFIG) + MinportName.Length + sizeof(WCHAR)*2;
// allocate memory for reg key name
szStringBuffer =
ExAllocatePoolWithTag(
PagedPool,
BufferSize,
MODULE_TAG
);
if ( szStringBuffer == NULL ){
DBGLOG(( LCriticalError, "ExAllocatePoolWithTag(BufferSize) failed\n", BufferSize ));
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlCopyMemory( szStringBuffer, REG_KEY_TCP_ADAPTERS, sizeof(REG_KEY_TCP_ADAPTERS) );
usAdapterConfig.Buffer = szStringBuffer;
usAdapterConfig.MaximumLength = (USHORT)BufferSize;
usAdapterConfig.Length = (USHORT)(sizeof(REG_KEY_TCP_ADAPTERS)-sizeof(WCHAR));
//config name using adapter guid
ntStatus =
RtlAppendUnicodeStringToString(
&usAdapterConfig,
&MinportName
);
if ( !NT_SUCCESS ( ntStatus ) ){
DBGLOG(( LCriticalError, "%08X=RtlAppendUnicodeStringToString failed\n", ntStatus ));
break;
}
ntStatus =
RegOpenKeyW(
&hKey,
&usAdapterConfig
);
if ( !NT_SUCCESS ( ntStatus ) ){
DBGLOG(( LCriticalError, "%08X=RegOpenKeyW(%wZ) failed\n", ntStatus,&usAdapterConfig ));
break;
}
// query ipconfig value
//Tcpip\Parameters\Interfaces\{06F8BDFC-C24C-40BA-86BA-67CC86826CDF}
ntStatus =
RegReadStringFromMultiSZ(
hKey,
REG_VALUE_IPCONFIG,
&usIpConfigValue
);
if ( !NT_SUCCESS ( ntStatus ) ){
DBGLOG(( LCriticalError, "%08X=RegReadStringFromMultiSZ(%wZ) failed\n", ntStatus, &usIpConfigValue ));
break;
}
ZwClose( hKey );
hKey = NULL;
// expand buffer if needed
if ( BufferSize < sizeof(REG_KEY_SERVICES) + usIpConfigValue.Length ){
ExFreePool( szStringBuffer );
BufferSize = sizeof(REG_KEY_SERVICES) + usIpConfigValue.Length;
szStringBuffer =
ExAllocatePoolWithTag(
PagedPool,
BufferSize,
MODULE_TAG
);
if ( szStringBuffer == NULL ){
DBGLOG(( LCriticalError, "ExAllocatePoolWithTag(BufferSize) failed\n", BufferSize ));
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
break;
}
}
// get adapter ip config
RtlCopyMemory( szStringBuffer, REG_KEY_SERVICES, sizeof(REG_KEY_SERVICES) );
usAdapterConfig.Buffer = szStringBuffer;
usAdapterConfig.MaximumLength = (USHORT)BufferSize;
usAdapterConfig.Length = (USHORT)(sizeof(REG_KEY_SERVICES)-sizeof(WCHAR));
ntStatus =
RtlAppendUnicodeStringToString(
&usAdapterConfig,
&usIpConfigValue
);
if ( !NT_SUCCESS ( ntStatus ) ){
DBGLOG(( LCriticalError, "%08X=RtlAppendUnicodeStringToString(%wZ,%wZ) failed\n",
ntStatus, &usAdapterConfig, &usIpConfigValue ));
break;
}
ntStatus =
RegOpenKeyW(
&hKey,
&usAdapterConfig
);
if ( !NT_SUCCESS ( ntStatus ) ){
DBGLOG(( LCriticalError, "%08X=RegOpenKeyW(%wZ) failed\n",
ntStatus, &usAdapterConfig ));
break;
}
// dhcp is on
ntStatus =
RegReadDword(
hKey,
REG_VALUE_ENABLEDHCP,
&EnableDHCP
);
//ip
IpAddress =
RegReadIpValue(
hKey,
EnableDHCP ? REG_VALUE_DHCP_IPADDRESS : REG_VALUE_IPADDRESS,
!EnableDHCP
);
//mask
IpMask =
RegReadIpValue(
hKey,
EnableDHCP ? REG_VALUE_DHCP_SUBNETMASK : REG_VALUE_SUBNETMASK,
!EnableDHCP
);
// read gateway
ntStatus =
RegReadIpValue(
hKey,
EnableDHCP ? REG_VALUE_DHCP_GATEWAY : REG_VALUE_GATEWAY,
TRUE
);
// read gateway
ntStatus =
RegReadStringValue(
hKey,
EnableDHCP ? REG_VALUE_DHCP_DNS : REG_VALUE_DNS,
&usNameServers
);
// usNameServer is the list of name servers, divided by space
if ( NT_SUCCESS ( ntStatus ) ){
UNICODE_STRING usNameServer;
UNICODE_STRING usNameServerNext;
ANSI_STRING asNameServer;
unsigned i = 0;
// parse string
while ( (ntStatus = RtxFindCharInUnicodeStringWithShift(
&usNameServers,
&usNameServerNext,
L' ', 0, FALSE )) == STATUS_SUCCESS
)
{
if ( usNameServerNext.Length == 0 ){
break;
}
*(usNameServerNext.Buffer -1 ) = UNICODE_NULL;
usNameServer = usNameServers;
//usNameServer.Buffer ++;
usNameServer.Length = usNameServer.MaximumLength =
(USHORT)((PUCHAR)usNameServerNext.Buffer - (PUCHAR)usNameServers.Buffer);
RtlUnicodeStringToAnsiStringInplace( &usNameServer, &asNameServer );
IpNameServer = inet_addr ( asNameServer.Buffer );
if ( IpNameServer ){
dns_setserver( i ++, (ip_addr_t*)&IpNameServer );
}
usNameServers = usNameServerNext;
if ( i >= DNS_MAX_SERVERS ){
break;
}
}
if ( i < DNS_MAX_SERVERS ){
RtlUnicodeStringToAnsiStringInplace( &usNameServers, &asNameServer );
IpNameServer = inet_addr ( asNameServer.Buffer );
if ( IpNameServer ){
dns_setserver( i ++, (ip_addr_t*)&IpNameServer );
}
}
}
ntStatus = STATUS_SUCCESS;
} while ( FALSE );
if ( hKey ){
ZwClose( hKey );
}
if ( usIpConfigValue.Buffer ){
ExFreePool( usIpConfigValue.Buffer );
}
if ( szStringBuffer ){
ExFreePool( szStringBuffer );
}
*pIpAddress = IpAddress;
*pIpMask = IpMask;
*pIpGateWay = IpGateWay;
*pEnableDHCP = EnableDHCP;
return ntStatus;
}
//***********************************************************************************
// Name: ProtocolBindAdapter
//
// Description:
// Binds our protocol to network interface
//
// Return value:
// Operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolBindAdapter(
IN PKIP_NDIS_INTERFACE pInterface,
IN ULONG IpAddress,
IN ULONG IpMask,
IN ULONG IpGateWay,
IN BOOLEAN WanLink
)
{
PKIP_NDIS_MINIPORT pMiniport = pInterface->Miniport;
PKIP_NDIS_PROTOCOL pProtocol = &pInterface->Protocol;
NTSTATUS ntStatus;
ULONG EnableDHCP = 0;
do
{
//
// initialize protocol
//
ntStatus =
ProtocolInitialize(
pMiniport,
pProtocol
);
if ( ntStatus != NDIS_STATUS_SUCCESS ) {
DBGLOG(( LCriticalError, "%08X=ProtocolInitialize failed\n", ntStatus ));
break;
}
if ( WanLink == FALSE ){
//load ip config from registry
ProtocolLoadIpConfig(
(PKIP_NDIS_ADAPTER)pInterface,
pProtocol,
&IpAddress,
&IpMask,
&IpGateWay,
&EnableDHCP
);
}else{
ASSERT(IpAddress==IpGateWay);
}
//register interface in lwip
ProtocolRegisterInterface(
pProtocol,
IpAddress,
IpMask,
IpGateWay,
(BOOLEAN)EnableDHCP
);
} while ( FALSE );
return ntStatus;
}
//***********************************************************************************
// Name: ProtocolUnBindAdapter
//
// Description:
// UnBinds our protocol from network interface
//
// Return value:
// Operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolUnBindAdapter(
IN PKIP_NDIS_MINIPORT pMiniport,
IN PKIP_NDIS_INTERFACE pInterface,
IN PKIP_NDIS_PROTOCOL pProtocol
)
{
if ( pProtocol->EnableDHCP ){
netifapi_dhcp_stop(&pProtocol->IIF,1);
}
// deregister interface
netif_remove(&pProtocol->IIF);
if ( pMiniport->MajorNdisVersion <= 5 )
{
// free send buffers
if ( pProtocol->BufferPoolHandle ){
NdisFreeBufferPool( pProtocol->BufferPoolHandle );
}
if ( pProtocol->PacketPoolHandle ){
NdisFreePacketPool( pProtocol->PacketPoolHandle );
}
}else{
if ( pProtocol->NdisNetBufferListPool != NULL) {
NdisFreeNetBufferListPoolPtr(pProtocol->NdisNetBufferListPool);
}
}
return NDIS_STATUS_SUCCESS;
}
//////////////////////////////////////////////////////////////////////////
// packet functions
//***********************************************************************************
// Name: AllocatePacketDescriptor
//
// Description:
// Allocates packet descriptor for ndis packet or net buffer list
//
// Return value:
// descriptor or null
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
VOID
FreePbuf(
IN struct pbuf *p
);
PKIP_PACKET_DESCRIPTOR
AllocatePacketDescriptor(
IN PKIP_NDIS_PROTOCOL pProtocol,
IN PVOID pOrgPacket,
IN PVOID DataBuffer,
IN ULONG Size,
IN ULONG TotalLength
)
{
KIRQL OldIrql;
PKIP_PACKET_DESCRIPTOR PacketDesc;
PacketDesc =
(PKIP_PACKET_DESCRIPTOR)
NdisAllocateFromNPagedLookasideList(
&g_PacketDescriptorLookaside
);
if( PacketDesc )
{
RtlZeroMemory(PacketDesc,sizeof(KIP_PACKET_DESCRIPTOR));
PacketDesc->RefCount = 1;
PacketDesc->pOrgPacket = pOrgPacket;
PacketDesc->pProtocol = pProtocol;
if ( DataBuffer == NULL ){
PacketDesc->DataBuffer = NdisAllocateFromNPagedLookasideList( &g_DataLookaside );
if ( PacketDesc->DataBuffer == NULL ){
ExFreeToNPagedLookasideList(&g_PacketDescriptorLookaside,PacketDesc);
InterlockedIncrement(&g_AllocationFailure);
return NULL;
}
PacketDesc->Flags |= PACKET_EMBEDED_BUFFER;
PacketDesc->Length = MAX_ETHER_SIZE;
}else{
PacketDesc->DataBuffer = DataBuffer;
PacketDesc->Length = Size;
}
// initialize lwip pbuf
pbuf_alloced_custom(
PBUF_RAW,
(u16_t)TotalLength,
PBUF_ROM,
&PacketDesc->LwipPacket,
PacketDesc->DataBuffer,
(u16_t)TotalLength
);
PacketDesc->LwipPacket.custom_free_function = FreePbuf;
KeAcquireSpinLock(&g_PacketListSpinLock,&OldIrql);
InsertHeadList(&g_PacketList,&PacketDesc->ListEntry);
KeReleaseSpinLock(&g_PacketListSpinLock,OldIrql);
InterlockedIncrement(&g_PacketsAllocated);
InterlockedIncrement(&pProtocol->PendingPackets);
}
else
{
InterlockedIncrement(&g_AllocationFailure);
}
return PacketDesc;
}
//***********************************************************************************
// Name: FreePacketDescriptor
//
// Description:
// Releases the packet descriptor allocated with AllocatePacketDescriptor
//
// Return value:
// None
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
VOID
FreePacketDescriptor(
IN PKIP_PACKET_DESCRIPTOR PacketDesc
)
{
KIRQL OldIrql;
if ( PacketDesc ){
PKIP_NDIS_PROTOCOL pProtocol = PacketDesc->pProtocol;
KeAcquireSpinLock(&g_PacketListSpinLock,&OldIrql);
RemoveEntryList(&PacketDesc->ListEntry);
KeReleaseSpinLock(&g_PacketListSpinLock,OldIrql);
if ( PacketDesc->pOrgPacket ){
NDIS_FreePacket(
pProtocol,
PacketDesc->pOrgPacket
);
}
if ( ( PacketDesc->Flags & PACKET_EMBEDED_BUFFER ) == PACKET_EMBEDED_BUFFER &&
PacketDesc->DataBuffer )
{
ExFreeToNPagedLookasideList(&g_DataLookaside,PacketDesc->DataBuffer);
}
ExFreeToNPagedLookasideList(&g_PacketDescriptorLookaside,PacketDesc);
InterlockedDecrement(&pProtocol->PendingPackets);
}
}
//***********************************************************************************
// Name: FreePbuf
//
// Description:
// releases lwip's pbuf
//
// Return value:
// None
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
VOID
FreePbuf(
IN struct pbuf *p
)
{
PKIP_PACKET_DESCRIPTOR Packet = CONTAINING_RECORD(p,KIP_PACKET_DESCRIPTOR,LwipPacket);
FreePacketDescriptor(Packet);
}
VOID
CopyPbufToBuffer(
IN PVOID Buffer,
IN ULONG Length,
IN ULONG Offset,
IN struct pbuf *p
)
{
struct pbuf *q;
char *last=NULL;
for( q = p; q != NULL; q = q->next)
{
if(q->payload == last){
break;
} else {
last = q->payload;
}
// copy data
NdisMoveMemory(
(PCHAR)Buffer + Offset,
q->payload,
q->len
);
Offset += q->len;
}
}
//***********************************************************************************
// Name: ProtocolAllocateSendPacket
//
// Description:
// allocates Ndis5 packet for data sending
//
// Return value:
// Operation status
//
// Parameters:
//
// NOTE: None
// **********************************************************************************
NDIS_STATUS
ProtocolAllocateSendPacket(
IN PKIP_NDIS_ADAPTER pAdapter,
IN PKIP_NDIS_PROTOCOL pProtocol,
IN struct pbuf *p,
OUT PNDIS_PACKET *pPacket
)
{
NDIS_STATUS nStatus = NDIS_STATUS_FAILURE;
PNDIS_PACKET_EX Packet;
PNDIS_BUFFER NdisBuffer;
PKIP_PACKET_CONTEXT PacketContext;
do
{
// Allocate new packet from adapter entry associated pool
KIP_LOCK_PACKET_POOL(pProtocol);
// allocate new packet to send
NdisAllocatePacket(
&nStatus,
(PNDIS_PACKET*)&Packet,
pProtocol->PacketPoolHandle
);
KIP_UNLOCK_PACKET_POOL ( pProtocol );
if ( nStatus != NDIS_STATUS_SUCCESS )
{
DBGLOG(( LError, "%08X = NdisAllocatePacket failed\n", nStatus ));
break;
}
Packet->Reserved.DataLength = MAX_ETHER_SIZE;
// allocate ndis buffer for packet
NdisAllocateBuffer(
&nStatus,
&NdisBuffer,
pProtocol->BufferPoolHandle,
Packet->Reserved.DataBuffer,
p->tot_len
);
if ( nStatus != NDIS_STATUS_SUCCESS )
{
DBGLOG(( LError, "%08X = NdisAllocateBuffer failed\n", nStatus ));
NdisFreePacket( (PNDIS_PACKET)Packet );
break;
}
// copy pbuf to packet
CopyPbufToBuffer(
Packet->Reserved.DataBuffer,
MAX_ETHER_SIZE,
/*pAdapter->Protocol.PppoeSessId ? PPPOE_HEADERLEN :*/ 0,
p
);
Packet->Reserved.DataLength = p->tot_len;
PacketContext = NDIS_PER_PACKET_CONTEXT((PNDIS_PACKET)Packet);
PacketContext->pAdapter = pAdapter;
PacketContext->pProtocol = pProtocol;
NdisChainBufferAtFront((PNDIS_PACKET)Packet, NdisBuffer);
//NDIS_SET_PACKET_STATUS((PNDIS_PACKET)Packet,NDIS_STATUS_RESOURCES);
*pPacket = (PNDIS_PACKET)Packet;
} while ( FALSE );
return nStatus;
}
//***********************************************************************************
// Name: ProtocolAllocateSendNbList
//
// Description:
// allocates Ndis5 packet for data sending