Hesham/wintun
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Revise constants requiring network-byte order

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-06-07 08:16:24 +02:00 committed by Jason A. Donenfeld
parent 9a815147f6
commit 2a5da5c58f
1 changed files with 14 additions and 15 deletions
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29
wintun.c
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@ -34,6 +34,7 @@
#define TUN_EXCH_MIN_BUFFER_SIZE_READ TUN_EXCH_MAX_PACKET_SIZE // Minimum size of read exchange buffer
#define TUN_EXCH_MIN_BUFFER_SIZE_WRITE (sizeof(TUN_PACKET)) // Minimum size of write exchange buffer
#define TUN_QUEUE_MAX_NBLS 1000
#define TUN_MEMORY_TAG 'wtun'
typedef struct _TUN_PACKET {
ULONG Size; // Size of packet data (TUN_EXCH_MAX_IP_PACKET_SIZE max)
@ -104,13 +105,11 @@ static NDIS_HANDLE NdisMiniportDriverHandle;
static volatile LONG64 AdapterCount;
#if REG_DWORD == REG_DWORD_BIG_ENDIAN
#define TUN_MEMORY_TAG 'wtun'
#define TunHtons(x) ((USHORT)(x))
#define TunHtonl(x) ((ULONG)(x))
#define TUN_HTONS(x) ((USHORT)(x))
#define TUN_HTONL(x) ((ULONG)(x))
#elif REG_DWORD == REG_DWORD_LITTLE_ENDIAN
#define TUN_MEMORY_TAG 'nutw'
#define TunHtons(x) RtlUshortByteSwap(x)
#define TunHtonl(x) RtlUlongByteSwap(x)
#define TUN_HTONS(x) (((USHORT)(x) & 0x00ff) << 8 | ((USHORT)(x) & 0xff00) >> 8)
#define TUN_HTONL(x) (((ULONG)(x) & 0x000000ff) << 24 | ((ULONG)(x) & 0x0000ff00) << 8 | ((ULONG)(x) & 0x00ff0000) >> 8 | ((ULONG)(x) & 0xff000000) >> 24)
#else
#error "Unable to determine endianess"
#endif
@ -620,8 +619,8 @@ static NTSTATUS TunWriteFromIrp(_Inout_ TUN_CTX *ctx, _Inout_ IRP *Irp)
ULONG nbl_flags;
USHORT nbl_proto;
} ether_const[ethtypeidx_end] = {
{ NDIS_NBL_FLAGS_IS_IPV4, NDIS_ETH_TYPE_IPV4 },
{ NDIS_NBL_FLAGS_IS_IPV6, NDIS_ETH_TYPE_IPV6 },
{ NDIS_NBL_FLAGS_IS_IPV4, TUN_HTONS(NDIS_ETH_TYPE_IPV4) },
{ NDIS_NBL_FLAGS_IS_IPV6, TUN_HTONS(NDIS_ETH_TYPE_IPV6) },
};
struct {
NET_BUFFER_LIST *head, *tail;
@ -672,7 +671,7 @@ static NTSTATUS TunWriteFromIrp(_Inout_ TUN_CTX *ctx, _Inout_ IRP *Irp)
nbl->SourceHandle = ctx->MiniportAdapterHandle;
NdisSetNblFlag(nbl, ether_const[idx].nbl_flags);
NET_BUFFER_LIST_INFO(nbl, NetBufferListFrameType) = (PVOID)TunHtons(ether_const[idx].nbl_proto);
NET_BUFFER_LIST_INFO(nbl, NetBufferListFrameType) = (PVOID)ether_const[idx].nbl_proto;
NET_BUFFER_LIST_STATUS(nbl) = NDIS_STATUS_SUCCESS;
NET_BUFFER_LIST_IRP(nbl) = Irp;
TunAppendNBL(&nbl_queue[idx].head, &nbl_queue[idx].tail, nbl);
@ -729,8 +728,8 @@ static void TunForceHandlesClosed(_Inout_ TUN_CTX *ctx)
for (ULONG size = 0, req; (status = ZwQuerySystemInformation(SystemExtendedHandleInformation, table, size, &req)) == STATUS_INFO_LENGTH_MISMATCH; size = req) {
if (table)
ExFreePoolWithTag(table, TUN_MEMORY_TAG);
table = ExAllocatePoolWithTag(PagedPool, req, TUN_MEMORY_TAG);
ExFreePoolWithTag(table, TUN_HTONL(TUN_MEMORY_TAG));
table = ExAllocatePoolWithTag(PagedPool, req, TUN_HTONL(TUN_MEMORY_TAG));
if (!table)
return;
}
@ -756,7 +755,7 @@ static void TunForceHandlesClosed(_Inout_ TUN_CTX *ctx)
}
out:
if (table)
ExFreePoolWithTag(table, TUN_MEMORY_TAG);
ExFreePoolWithTag(table, TUN_HTONL(TUN_MEMORY_TAG));
}
static DRIVER_DISPATCH TunDispatch;
@ -1147,7 +1146,7 @@ static NDIS_STATUS TunInitializeEx(NDIS_HANDLE MiniportAdapterHandle, NDIS_HANDL
ctx->Device.Handle = handle;
ctx->Device.Object = object;
IoInitializeRemoveLock(&ctx->Device.RemoveLock, TUN_MEMORY_TAG, 0, 0);
IoInitializeRemoveLock(&ctx->Device.RemoveLock, TUN_HTONL(TUN_MEMORY_TAG), 0, 0);
KeInitializeSpinLock(&ctx->Device.ReadQueue.Lock);
IoCsqInitializeEx(&ctx->Device.ReadQueue.Csq,
TunCsqInsertIrpEx,
@ -1168,7 +1167,7 @@ static NDIS_STATUS TunInitializeEx(NDIS_HANDLE MiniportAdapterHandle, NDIS_HANDL
},
.ProtocolId = NDIS_PROTOCOL_ID_DEFAULT,
.fAllocateNetBuffer = TRUE,
.PoolTag = TUN_MEMORY_TAG
.PoolTag = TUN_HTONL(TUN_MEMORY_TAG)
};
#pragma warning(suppress: 6014) /* Leaking memory 'ctx->NBLPool'. Note: 'ctx->NBLPool' is freed in TunHaltEx; or on failure. */
ctx->NBLPool = NdisAllocateNetBufferListPool(MiniportAdapterHandle, &nbl_pool_param);
@ -1478,7 +1477,7 @@ static NDIS_STATUS TunOidQuery(_Inout_ TUN_CTX *ctx, _Inout_ NDIS_OID_REQUEST *O
return TunOidQueryWrite(OidRequest, TUN_EXCH_MAX_IP_PACKET_SIZE * TUN_EXCH_MAX_PACKETS);
case OID_GEN_VENDOR_ID:
return TunOidQueryWrite(OidRequest, TunHtonl(TUN_VENDOR_ID));
return TunOidQueryWrite(OidRequest, TUN_HTONL(TUN_VENDOR_ID));
case OID_GEN_VENDOR_DESCRIPTION:
return TunOidQueryWriteBuf(OidRequest, TUN_VENDOR_NAME, (UINT)sizeof(TUN_VENDOR_NAME));