Hi all, In the latest features of the MLX5 PMD (i.e., DPDK 19.08), there is LRO hardware support. However, I cannot make it work with our dual port 100GbE Mellanox ConnectX5 (MT27800) card.
Let me first describe the configuration of my testbed: First,I upgraded OFED to the latest 4.7-1.0.0 with firmware version 16.26.1040 (MT_0000000008) and installed the latest MFT (4.13) to enable DevX according to the instructions here <https://doc.dpdk.org/guides/nics/mlx5.html>: mlxconfig -d <device> set UCTX_EN=1 My OS is Ubuntu server 18.04 with kernel 4.15.0-65-generic. I also tested on another server with the same distro but more recent kernel (5.15), without any luck. To test LRO, I simply use testpmd as follows: sudo ./testpmd -l 0-15 -w 0000:03:00.1 -v -- --txq=16 --rxq=16 --nb-cores=15 --enable-lro -i Th output I get is: Configuring Port 0 (socket 0) net_mlx5: Failed to create RQ using DevX net_mlx5: port 0 Rx queue 8 RQ creation failure net_mlx5: port 0 Rx queue allocation failed: Cannot allocate memory Fail to start port 0 Please stop the ports first Done Reducing the number of queues does not solve the problem. Specifically, if I ask for 1 rX and 1 Tx queue, testpmd fails without an error from the mlx driver: Configuring Port 0 (socket 0) Fail to start port 0 Please stop the ports first Done I would appreciate your help on this issue. Best regards, Georgios
