Page MenuHomeFreeBSD

libmlx5: Report Multi-Packet RQ capabilities through mlx5 direct verbs
ClosedPublic

Authored by vag.singh_oneconvergence.com on Sep 28 2021, 2:13 PM.
Tags
None
Referenced Files
Unknown Object (File)
Fri, Oct 2, 12:03 PM
Unknown Object (File)
Thu, Oct 1, 7:45 AM
Unknown Object (File)
Sat, Sep 26, 9:01 PM
Unknown Object (File)
Sat, Sep 26, 7:39 PM
Unknown Object (File)
Fri, Sep 25, 8:47 AM
Unknown Object (File)
Fri, Sep 25, 8:19 AM
Unknown Object (File)
Fri, Sep 25, 5:03 AM
Unknown Object (File)
Thu, Sep 24, 3:32 PM

Details

Summary

[PATCH 26/31] FreeBSD OFED support for DPDK MLX5 PMD

A Multi-Packet RQ is a receive queue where multiple packets are
written to the same WQE. Each message starts in the beginning of a
stride. The total size of the scatter elements of each WQE is
determined upon RQ creation and all the posted WQEs should meet the
determined size.

A Multi-Packet RQ reduces the number of needed post-recv operations
thus increasing performance.

It reduces memory footprint by allowing each packet to consume a
different number of strides instead of the whole WR.

Test Plan

Tested on KVM, ESXi, and HyperV/Azure Hypervisors with FreeBSD 14.0-CURRENT and FreeBSD12.1-STABLE.

iperf
DPDK MLX5 PMD/testpmd

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

This revision was not accepted when it landed; it landed in state Needs Review.Wed, Sep 16, 2:14 PM
This revision was automatically updated to reflect the committed changes.