On Thu, 11 Jan 2024 05:55:53 +0000 Nicolson Ken (ニコルソン ケン) <ken.nicol...@jp.panasonic.com> wrote:
> 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 You could use Tx callback to do this, or pdump, or pcap PMD.
