netdev - Re: [PATCH 0/2] Display adjacent switch port's attributes

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Message-ID: <20131211121357.4742d9e8@nehalam.linuxnetplumber.net>
Date:	Wed, 11 Dec 2013 12:13:57 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Stefan Raspl <raspl@...ux.vnet.ibm.com>
Cc:	davem@...emloft.net, bhutchings@...arflare.com,
	blaschka@...ux.vnet.ibm.com, netdev@...r.kernel.org,
	linux-s390@...r.kernel.org
Subject: Re: [PATCH 0/2] Display adjacent switch port's attributes

On Wed, 11 Dec 2013 14:28:58 +0100
Stefan Raspl <raspl@...ux.vnet.ibm.com> wrote:

> This patch series adds a new callback for ethtool to display the adjacent switch
> port's attributes, as perceived by the NIC, e.g. through respective LLDP message
> exchanges.
> A patch for the qeth device driver provides a sample exploiter for the new
> functionality.
> A new option for ethtool to display the settings will be posted in a separate
> patch.
> 
> Best regards,
> Stefan Raspl
> 
> Stefan Raspl (2):
>   ethtool: Add callback to indicate adjacent switch port attributes
>   qeth: Display adjacent switch port attributes in ethtool
> 
>  drivers/s390/net/qeth_core.h      |  7 ++++
>  drivers/s390/net/qeth_core_main.c | 79 +++++++++++++++++++++++++++++++++++++++
>  drivers/s390/net/qeth_core_mpc.h  | 17 +++++++++
>  drivers/s390/net/qeth_l2_main.c   |  1 +
>  drivers/s390/net/qeth_l3_main.c   |  1 +
>  include/linux/ethtool.h           |  3 ++
>  include/uapi/linux/ethtool.h      | 35 +++++++++++++++++
>  net/core/ethtool.c                | 22 +++++++++++
>  8 files changed, 165 insertions(+)
> 

Why more ethtool and not netlink? ethtool is a brittle interface, non-extensible
and does not support notifications of changes.
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