diff options
| -rw-r--r-- | driver/wintun.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/driver/wintun.c b/driver/wintun.c index 3e615bb..7cb72bb 100644 --- a/driver/wintun.c +++ b/driver/wintun.c @@ -517,13 +517,15 @@ TunProcessReceiveData(_Inout_ TUN_CTX *Ctx) break; RingHead = TUN_RING_WRAP(RingHead + AlignedPacketSize, RingCapacity); - MDL *Mdl = IoAllocateMdl(NULL, PacketSize, FALSE, FALSE, NULL); + VOID *PacketAddr = + (UCHAR *)MmGetMdlVirtualAddress(Ctx->Device.Receive.Mdl) + (ULONG)(Packet->Data - (UCHAR *)Ring); + MDL *Mdl = IoAllocateMdl(PacketAddr, PacketSize, FALSE, FALSE, NULL); if (!Mdl) goto skipNbl; IoBuildPartialMdl( Ctx->Device.Receive.Mdl, Mdl, - (UCHAR *)MmGetMdlVirtualAddress(Ctx->Device.Receive.Mdl) + (ULONG)(Packet->Data - (UCHAR *)Ring), + PacketAddr, PacketSize); NET_BUFFER_LIST *Nbl = NdisAllocateNetBufferAndNetBufferList(Ctx->NblPool, 0, 0, Mdl, 0, PacketSize); if (!Nbl) |