lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Thu, 27 Aug 2020 12:29:49 +0200
From:   Heiner Kallweit <>
To:     Rasmus Villemoes <>,
        Network Development <>
Cc:     Lasse Klok Mikkelsen <>
Subject: Re: powering off phys on 'ip link set down'

On 27.08.2020 12:08, Rasmus Villemoes wrote:
> Hi,
> We have a requirement that when an interface is taken down
> administratively, the phy should be powered off. That also works when
> the interface has link when the 'ip link set down ...' is run. But if
> there's no cable plugged in, the phy stays powered on (as can be seen
> both using phytool, and from the fact that a peer gets carrier once a
> cable is later plugged in).
> Is this expected behaviour? Driver/device dependent? Can we do anything
> to force the phy off?
This may be MAC/PHY-driver dependent. Which driver(s) do we talk about?
Also it may depend on whether Runtime PM is active for a PCI network
device. In addition WoL should be disabled.

> Thanks,
> Rasmus

Powered by blists - more mailing lists