Looking at rte_pktmbuf_prefree_seg() [1], the list of described requirements for RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE [2] seems incomplete. The following two requirements are missing: - The mbufs must be direct. - The mbufs must be non-segmented.
[1] https://elixir.bootlin.com/dpdk/latest/source/lib/mbuf/rte_mbuf.h#L1308 [2] https://elixir.bootlin.com/dpdk/latest/source/lib/ethdev/rte_ethdev.h#L1701 Med venlig hilsen / Kind regards, -Morten Brørup
