Re: [dpdk-dev] net/mlx5: mellanox cx5/cx6-dx increment "rx_phy_discard_packets" with DPDK rte_flow actions COUNT & DROP
From: Slava Ovsiienko <hidden>
Date: 2021-05-06 10:55:23
Hi, Kang There are have some questions to clarify: - what Is packet packet rate (in packet-per-second)? * what Is packet size? * do you use the switchdev configuration (E-Switch)? * could you try create all flows in group 1 (and have the first flow in group 0 forwarding all the traffic to group 1) ? With best regards, Slava From: Arthas <redacted> Sent: Thursday, May 6, 2021 11:00 To: Gregory Etelson <redacted>; dev@dpdk.org Cc: Matan Azrad <redacted>; Ori Kam <redacted>; Raslan Darawsheh <redacted>; stable@dpdk.org; Slava Ovsiienko <redacted>; Shahaf Shuler <redacted> Subject: [dpdk-dev] net/mlx5: mellanox cx5/cx6-dx increment "rx_phy_discard_packets" with DPDK rte_flow actions COUNT & DROP 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