Re: [dpdk-dev] [RFC 00/14] mlx5: support SubFunction

10/06/2021 12:33, Ferruh Yigit:

On 5/27/2021 2:37 PM, Xueming Li wrote:

quoted

SubFunction [1] is a portion of the PCI device, a SF netdev has its own
dedicated queues(txq, rxq). A SF shares PCI level resources with other
SFs and/or with its parent PCI function. Auxiliary bus is the
fundamental of SF.

This patch set introduces SubFunction support for mlx5 PMD driver
including class net, regex, vdpa and compress.

There is already an mdev patch, originated from long ago. Aren't subfunctions
presented as mdev device? If so can't we use mdev for it?

No unfortunately that's different.
mlx5 SF is based on top of auxiliary bus in the kernel/sysfs.