落后者加油！望各大虾帮忙！！

小弟对NTDDK的PACKET程序有点疑惑：
有
PacketReceiveIndicate函数（挂接ReceiveHandler）;
PacketReceivePacket函数（挂接ReceivePacketHandler）。
这两个函数中需要处理的功能有什么不同？
小弟主要是不懂既然用 NdisTransferData(）函数把PACKET传入
用  NdisMoveMappedMemory和IoAllocateMdl、IoBuildPartialMdl把Irp中的MEM转化的MDL中，为什么在PacketReceivePacket中又用NdisCopyFromPacketToPacket把PACKET又拷贝一次？
小弟不懂！

ReceiveHandler
This is a required function. ProtocolReceive is called with a pointer to a lookahead buffer. If this buffer contains less than the full, received network packet, ProtocolReceive calls NdisTransferData with a protocol-allocated packet descriptor specifying protocol-allocated buffer(s) to obtain the remainder of the received packet.

ReceivePacketHandler
This is an optional function. A ProtocolReceivePacket function should be provided if the protocol driver might be bound to a NIC driver that indicates an array of one or more packets by calling NdisMIndicateReceivePacket
以上是ddk文档的原文，
第二个函数只是在NICdriver管理一个总线dma适配器或者支持带外数据时被ndis调用

谢谢楼上那位大兄！！令小弟茅塞顿开！
其实小弟也看了DDK文档，只是总觉得不塌实。谢谢！！