netdev - Re: [net-next V2 01/17] net/mlx5: E-Switch, Refactor setting source port

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Message-ID: <CAJ3xEMhjo6cYpW-A-0RXKVM52jPCzer_K0WOR64C7HMK8tuRew@mail.gmail.com>
Date:   Tue, 9 Feb 2021 18:10:59 +0200
From:   Or Gerlitz <gerlitz.or@...il.com>
To:     Vlad Buslov <vladbu@...dia.com>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Saeed Mahameed <saeed@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Linux Netdev List <netdev@...r.kernel.org>,
        Mark Bloch <mbloch@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: Re: [net-next V2 01/17] net/mlx5: E-Switch, Refactor setting source port

On Tue, Feb 9, 2021 at 4:26 PM Vlad Buslov <vladbu@...dia.com> wrote:
> On Mon 08 Feb 2021 at 22:22, Jakub Kicinski <kuba@...nel.org> wrote:
> > On Mon, 8 Feb 2021 10:21:21 +0200 Vlad Buslov wrote:

> >> > These operations imply that 7.7.7.5 is configured on some interface on
> >> > the host. Most likely the VF representor itself, as that aids with ARP
> >> > resolution. Is that so?

> >> The tunnel endpoint IP address is configured on VF that is represented
> >> by enp8s0f0_0 representor in example rules. The VF is on host.

> > This is very confusing, are you saying that the 7.7.7.5 is configured
> > both on VF and VFrep? Could you provide a full picture of the config
> > with IP addresses and routing?

> No, tunnel IP is configured on VF. That particular VF is in host [..]

What's the motivation for that? isn't that introducing 3x slow down?