netdev - Re: ethtool 5.7: netlink ENOENT error when setting WOL

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Message-ID: <20200614232607.itigyaqamm5sql63@lion.mk-sys.cz>
Date:   Mon, 15 Jun 2020 01:26:07 +0200
From:   Michal Kubecek <mkubecek@...e.cz>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: ethtool 5.7: netlink ENOENT error when setting WOL

On Mon, Jun 15, 2020 at 12:35:30AM +0200, Heiner Kallweit wrote:
> Seems that disabling ETHTOOL_NETLINK for PHYLIB=m has (at least) one
> more side effect. I just saw that ifconfig doesn't report LOWER_UP
> any longer. Reason seems to be that the ioctl fallback supports
> 16 bits for the flags only (and IFF_LOWER_UP is bit 16).
> See dev_ifsioc_locked().

I don't think this is related to CONFIG_ETHTOOL_NETLINK; AFAIK ifconfig
does not use netlink at all and device flags are certainly not passed
via ethtool netlink.

Michal