Re: [PATCH net-next v4 2/8] net: ethtool: netlink: Allow per-netdevice DUMP operations

[Jakub Kicinski]

On Tue, 25 Mar 2025 14:15:07 -0700 Jakub Kicinski wrote:
> > This means the dump will have a different behavior in case of filtered dump
> > (allow_pernetdev_dump) or standard dump.
> > The standard dump will drop the interface device so it will dump all interfaces
> > even if one is specified.
> > The filtered dump will dump only the specified interface. 
> > Maybe it would be nice to have the same behavior for the dump for all the
> > ethtool command.
> > Even if this change modify the behavior of the dump for all the ethtool commands
> > it won't be an issue as the filtered dump did not exist before, so I suppose it
> > won't break anything. IMHO it is safer to do it now than later, if existing
> > ethtool command adds support for filtered dump.
> > We should find another way to know the parser is called from dump or doit.  
> 
> Let's try. We can probably make required_dev attr of
> ethnl_parse_header_dev_get() a three state one: require, allow, reject?

Ah, don't think this is going to work. You're not converting all 
the dumps, just the PHY ones. It's fine either way, then.