From: "Ramón Nordin Rodriguez" <ramon.nordin.rodriguez@ferroamp.se>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] net: microchip_t1s: additional phy support and collision detect handling
Date: Tue, 28 Nov 2023 09:57:35 +0100 [thread overview]
Message-ID: <ZWWrf4svgQc8x1PU@debian> (raw)
In-Reply-To: <270f74c0-4a1d-4a82-a77c-0e8a8982e80f@lunn.ch>
On Mon, Nov 27, 2023 at 05:03:54PM +0100, Andrew Lunn wrote:
> > * 3-4 nodes (depending on how many usb ports and dongles I have)
> > * run iperf with long cables and CSMA/CD
> > * run iperf with long cables and CMSA/No CD
> >
> > I'll report back the results. Anything you'd like to add/focus on with
> > evaluation?
>
> Humm, thinking about how CSMA/CD works...
>
> Maybe look at what counters the MAC provides. Does it have collisions
> and bad FCS? A collision should result in a bad FCS, if you are not
> using CD. So if things are working correctly, the count for CD should
> move to FCS if you turn CD off. If CD is falsely triggering, FCS as a
> % should not really change, but you probably get more frames over the
> link?
>
That is some really cool input, I have to do some datasheet digging and
hacking. I'll try to set everything up today, tomorrow I can hang in
the lab after hours and test things out!
Partihban suggested that Microchips support might be able to help with
testing, might give them a ping soon as I a solid plan.
Really appreciate the insight!
R
next prev parent reply other threads:[~2023-11-28 8:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-27 10:40 [PATCH 0/3] net: microchip_t1s: additional phy support and collision detect handling Ramón N.Rodriguez
2023-11-27 10:40 ` [PATCH 1/3] net: microchip_t1s: refactor reset functionality Ramón N.Rodriguez
2023-11-27 13:27 ` Andrew Lunn
2023-11-27 10:40 ` [PATCH 2/3] net: microchip_t1s: add support for LAN867x Rev.C1 Ramón N.Rodriguez
2023-11-27 13:37 ` Andrew Lunn
2023-11-27 14:02 ` Ramón Nordin Rodriguez
2023-12-05 10:20 ` Félix Piédallu
2023-12-06 20:58 ` Ramón Nordin Rodriguez
2023-11-27 10:40 ` [PATCH 3/3] net: microchip_t1s: conditional collision detection Ramón N.Rodriguez
2023-11-27 16:00 ` Parthiban.Veerasooran
2023-11-27 16:32 ` Ramón Nordin Rodriguez
2023-11-28 6:52 ` Parthiban.Veerasooran
2023-11-28 9:18 ` Ramón Nordin Rodriguez
2023-11-27 13:58 ` [PATCH 0/3] net: microchip_t1s: additional phy support and collision detect handling Andrew Lunn
2023-11-27 15:30 ` Ramón Nordin Rodriguez
2023-11-27 16:03 ` Andrew Lunn
2023-11-28 8:57 ` Ramón Nordin Rodriguez [this message]
2023-12-10 12:10 ` Ramón Nordin Rodriguez
2023-12-11 13:54 ` Andrew Lunn
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