netdev - Re: [EXT] Re: bnx2x: ppc64le: Unable to set message level greater than 0x7fff

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Date:   Wed, 16 Mar 2022 11:17:54 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Manish Chopra <manishc@...vell.com>
Cc:     Paul Menzel <pmenzel@...gen.mpg.de>,
        Michal Kubecek <mkubecek@...e.cz>,
        Ariel Elior <aelior@...vell.com>,
        Sudarsana Reddy Kalluru <skalluru@...vell.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "it+netdev@...gen.mpg.de" <it+netdev@...gen.mpg.de>
Subject: Re: [EXT] Re: bnx2x: ppc64le: Unable to set message level greater
 than 0x7fff

On Wed, 16 Mar 2022 11:49:39 +0000 Manish Chopra wrote:
> As ethtool over netlink has some limitations of the size,
> I believe you can configure ethtool with "--disable-netlink" and set those message levels fine

Yup, IIUC it works for Paul on a 5.17 system, that system likely has
old ethtool user space tool which uses ioctls instead of netlink.

What makes the netlink path somewhat non-trivial is that there is 
an expectation that the communication can be based on names (strings)
as well as bit positions. I think we'd need a complete parallel
attribute to carry vendor specific bits :S