Thank you for your reply, Konstantin.

Both MBUF_FAST_FREE and indirect mbufs are for performance reasons, 

but they cannot be used at the same time, which is indeed a pity. In a real-world

application, I don't know which method is more conducive to the optimization of

overall performance, so I want to add a choice for the application, do you think it

is necessaryŁ¨like rte_ipv4_fragment_clone_packetŁ©?

Huichao,Cai