Hi all,

I'm wanting to basically tap a DPDK stream and for instance save all packets 
being Txed by a PMD to a separate file.

I know I could relatively easily modify an existing PMD to have two output 
ports, but is there either an existing PMD that does this, or a programmatic 
way to graft a second port onto an arbitrary PMD, or is there another simpler 
way that I haven't realised yet. As mbufs are already reference counted, I 
would hope, and require, that such a solution would be zero copy. RSS-friendly 
would also be a plus.

Thanks,
Ken

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