Netmap: Build a network SPAN/TAP from netmap

[Ming Fu]

Hi,

I am trying to explore the possibility to build a network SPAN/TAP from netmap. Similar to the bridge sample, but all packet going through the bridge also get copied to a SPAN port. How do I duplicate or clone an incoming packet and send the original to bridge peer and the cloned one to the SPAN port? Is there an API like FreeBsd m_copypacket() for netmap? Would it work for Linux as well?

Thanks
Ming