Split traffic between the Linux stack and DPDK application

[Pavel Vazharov]

Hi there,

A DPDK can run on top of XDP sockets and use custom XDP program to split
the traffic between the Linux stack and the DPDK application. This way
still allows zero copy between the kernel and the DPDK application.
Is there another zero-copy way to achieve redirecting some part of the
traffic to the Linux kernel and another to a DPDK application?
For example, AFAIK I can run the DPDK application and redirect packets from
inside to the Linux stack via the DPDK KNI functionality but it'll be much
slower because it'll require packets copying and context switch (if I'm not
mistaken).

Regards,
Pavel.
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