From: Adel Belkhiri <adel.belkhiri@gmail.com>
To: dev@dpdk.org
Subject: Does the vhost-user driver ensures the distribution of traffic between multiple RX queues?
Date: Thu, 9 Jun 2022 13:33:49 -0400 [thread overview]
Message-ID: <CAMxxxdPe8aZ4=KcuE+Gf4-hJGZ3cNc6j2e4V0vM05-rGB+dzTA@mail.gmail.com> (raw)
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Hi guys,
I have a question for you. I know that vhost-user NICs can be configured
with many RX/TX queues, but does the vhost-user driver ensures the
distribution of traffic between RX queues?
I used the sample application l3fdw to switch traffic between two
vhost-user NICs, each with 4 queues. The traffic was generated using TREX
(and testpmd also), running inside a VM. When I traced my experiment, I
noticed that the traffic was only received in queue "0", while the other RX
queues were empty.
The l3fdw app tells me that "Port 0 modified RSS hash function based on
hardware support,requested:0xa38c configured:0". For offloading
capabilities, testpmd indicates that the vhost-user nic NIC has only
support for VLAN STRIP (and not for RSS)!
I appreciate any clarification on this matter.
Thank you,
PS:
- DPDK version: 19.08
- Qemu version: 4.2.1
Adele
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next reply other threads:[~2022-06-09 17:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-09 17:33 Adel Belkhiri [this message]
2022-06-09 20:05 ` Maxime Coquelin
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