[dpdk-dev] net/mlx5: mellanox cx5/cx6-dx increment "rx_phy_discard_packets" with DPDK rte_flow actions COUNT & DROP
From: Arthas <hidden>
Date: 2021-05-06 07:59:56
Hareware: CX5/CX6 DX + Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz DPDK version: 19.11.8/20.11/21.05-rc1&2 testpmd with case: testpmd> flow create 0 ingress pattern eth / ipv4 / udp dst is 53 / end actions count / drop / end testpmd> flow create 0 ingress pattern eth / ipv4 / udp src is 53 / end actions count / drop / end testpmd> flow create 0 ingress pattern eth / ipv4 / tcp / end actions count /drop end testpmd> flow list 0 ID Group Prio Attr Rule 0 0 0 i-- ETH IPV4 UDP => COUNT DROP 1 0 0 i-- ETH IPV4 UDP => COUNT DROP 2 0 0 i-- ETH IPV4 UDP => COUNT DROP or testpmd> flow create 0 ingress pattern eth / ipv4 / udp dst is 53 / end actions count / rss / end testpmd> flow create 0 ingress pattern eth / ipv4 / udp src is 53 / end actions count / rss / end testpmd> flow create 0 ingress pattern eth / ipv4 / udp / end actions count / rss / end testpmd> flow list 0 ID Group Prio Attr Rule 0 0 0 i-- ETH IPV4 UDP => COUNT RSS 1 0 0 i-- ETH IPV4 UDP => COUNT RSS 2 0 0 i-- ETH IPV4 UDP => COUNT RSS testpmd> as soon as NIC create more than 1 flow , CX5/CX6-dx NIC will increment 'rx_phy_discard_packets'. only 1 flow no problem! Is this a CX5/CX6-DX hardware issue? or Is it a DPDK mlx5 pmd bugs? Best Regards! KANG