Hello DPDK community, I am encountering an issue with the Hyper-V network driver (net_netvsc) when running a DPDK application in a virtual machine environment.
I consistently see the following error logged: __hn_nvs_execute(): invalid NVS resp len 32 (expect 40) hn_dev_configure(): subchannel configuration failed The issue was not present when using DPDK version 19.11.3 on the same VM and Hyper-V setup. The issue began after migrating to DPDK version 21.11.0. The application fails to initialize the network ports with this error. Hyper-V Host OS : Window Server 2019 Guest OS : Linux version 5.10 Based on the version information, it appears a change between DPDK 19 and 21.11 is causing a communication incompatibility with my Hyper-V environment. Is this a known regression, and are there any recommended workarounds or patches available? Has anyone else observed this behavior? Any insight or direction would be greatly appreciated. Regards, Kishan
