Subject: Re: [RFC PATCH net-next 1/8] ethtool: Add ability to control transceiver modules' low power mode

From: Andrew Lunn <[email-masked]>
Date: Wed, 11 Aug 2021 00:51:11 +0200

> The patch is well defined but it doesn't provide user with the answer
> to the question "why is the SFP still up if I asked it to be down?"

Can the user even see that the SFP is still up? Does ip link show
give:

3: eth42: <BROADCAST,MULTICAST,LOWER_UP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000

i.e. LOWER_UP despite DOWN?

Roopa added:

    rtnetlink: add support for protodown reason

Maybe we need the opposite as well?

      Andrew