Subject: Re: [PATCH 3/5] net: cadence: macb: implement EEE TX LPI support

From: Théo Lebrun <[email-masked]>
Date: Fri, 27 Feb 2026 15:39:09 +0100

Hello Nicolai,

On Fri Feb 27, 2026 at 10:00 AM CET, Nicolai Buchwitz wrote:
> On 26.2.2026 14:50, Théo Lebrun wrote:
>> On Thu Feb 26, 2026 at 11:49 AM CET, Nicolai Buchwitz wrote:
>> But talking about perf, let's measure.
>
> Tthanks for testing! Since you have the hardware at hand, would you be 
> willing to add MACB_CAPS_EEE to eyeq5_config as well? I'm happy to 
> include it in the series if you can confirm it works correctly.

Tested-by: Théo Lebrun <[email-masked]>

Tested using a hardware loopback and a net namespace.

# ip netns add netns_eth1
# ip link set eth1 netns netns_eth1
# ip -n netns_eth1 a add 10.0.0.2/24 dev eth1
# ip -n netns_eth1 link set eth1 up
# ip a add 10.0.0.1/24 dev eth0
# ip link set eth0 up

... ping and iperf3 ...

# ethtool --show-eee eth0
EEE settings for eth0:
enabled - active
250000 (us)
        Supported EEE link modes:  100baseT/Full
                                   1000baseT/Full
        Advertised EEE link modes:  100baseT/Full
                                    1000baseT/Full
        Link partner advertised EEE link modes:  100baseT/Full
                                                 1000baseT/Full

# ip netns exec netns_eth1 ethtool --show-eee eth1
EEE settings for eth1:
enabled - active
250000 (us)
        Supported EEE link modes:  100baseT/Full
                                   1000baseT/Full
        Advertised EEE link modes:  100baseT/Full
                                    1000baseT/Full
        Link partner advertised EEE link modes:  100baseT/Full
                                                 1000baseT/Full

Thanks,

--
Théo Lebrun, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com