Page MenuHomeFreeBSD

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

Authored by vag.singh_oneconvergence.com on Sep 28 2021, 2:13 PM.
Tags
None
Referenced Files
F158250782: D32201.id95859.diff
Sat, May 30, 9:13 AM
F158204147: D32201.id.diff
Fri, May 29, 6:47 PM
Unknown Object (File)
Thu, May 28, 1:05 PM
Unknown Object (File)
Thu, May 21, 9:54 AM
Unknown Object (File)
Mon, May 18, 3:31 PM
Unknown Object (File)
Apr 28 2026, 5:00 AM
Unknown Object (File)
Apr 21 2026, 12:02 PM
Unknown Object (File)
Apr 20 2026, 12:22 PM

Details

Reviewers
kib
hselasky
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 Skipped
Unit
Tests Skipped

Event Timeline