From: Thomas Monjalon <thomas@monjalon.net>
To: Bing Zhao <bingz@nvidia.com>
Cc: Slava Ovsiienko <viacheslavo@nvidia.com>,
Matan Azrad <matan@nvidia.com>, "dev@dpdk.org" <dev@dpdk.org>,
Ori Kam <orika@nvidia.com>, Raslan Darawsheh <rasland@nvidia.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/mlx5: fix loopback for DV queue
Date: Wed, 12 May 2021 17:30:41 +0200 [thread overview]
Message-ID: <3137360.tEDzu0CzRi@thomas> (raw)
In-Reply-To: <CH0PR12MB5041A879DF0FBB6CD31EFC51D0529@CH0PR12MB5041.namprd12.prod.outlook.com>
12/05/2021 16:51, Bing Zhao:
> From: Thomas Monjalon <thomas@monjalon.net>
> > 12/05/2021 16:36, Bing Zhao:
> > > When switching to the Devx interface, the kernel driver behavior
> > may
> >
> > What do you mean by "switching"?
>
> I mean when changing the Rxq from Verbs API to Devx API.
How do we switch?
> > > be different from using Verbs. The Tx loopback cannot work
> > properly
> > > even if the Tx and Rx queues are configured with loopback
> > attribute.
> > > To support self loopback for Tx, a Verbs dummy queue pair needs to
> > be
> > > created to trigger the kernel to enable the loopback.
> > >
> > > This is only required when TIR is created for Rx and loopback is
> > > needed. Only CQ and QP are needed for this case, no WQ(RQ) needs
> > to be
> > > created.
next prev parent reply other threads:[~2021-05-12 15:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 14:36 Bing Zhao
2021-05-12 14:48 ` Thomas Monjalon
2021-05-12 14:51 ` Bing Zhao
2021-05-12 15:30 ` Thomas Monjalon [this message]
2021-05-12 15:48 ` Slava Ovsiienko
2021-05-12 16:03 ` Thomas Monjalon
2021-05-13 11:14 ` Bing Zhao
2021-05-13 11:13 ` [dpdk-dev] [PATCH v2] " Bing Zhao
2021-05-13 12:58 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2021-05-13 12:59 ` Bing Zhao
2021-05-17 15:18 ` [dpdk-dev] [PATCH v3] " Bing Zhao
2021-05-18 8:32 ` Thomas Monjalon
2021-05-18 8:33 ` Bing Zhao
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