Getting message queue failures and inability to query hw information while using DPDK Release 21.11

Question

My company uses DPDK Release 21.11 on our linux-based product. While deploying on Azure we consistently get a pair of errors:

hn_rndis_execute(): RNDIS comp rid mismatch 0x524e8, expect 0x524e7

hn_rndis_get_offload(): hwcaps query failed: -22

The mismatch from hn_rndis_execute is always sequential.

Sometimes we get this error: hn_rndis_get_offload(): hwcaps query failed: -16

Has anyone with experience working with dpdk on Azure experienced message queue failures or an inability to query hw information? Could this be related to the network aswell?

Answer 1

Thanks for posting your question in the Microsoft Q&A forum.

Below are some key points to assist you in troubleshooting the issue:

• The errors you are seeing, suggest that there might be compatibility issues between DPDK and the Azure network adapter.
• To resolve these issues, ensure that you are using the correct DPDK poll-mode driver for Azure. The net_netvsc PMD is recommended for optimal performance with MANA.
• Make sure that you have enabled huge pages and that the information is visible in /proc/meminfo. Failure to enable huge pages can result in EAL initialization errors.
• Verify that the IAM user associated with the access key has the necessary permissions to access the specific S3 bucket and directory.
• Ensure that the S3 bucket policy allows the IAM user to access the specific bucket and directory.

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