netdev - Re: [PATCH net-next 1/2] rtnetlink: Add new RTM_GETEECSTATE message to get SyncE status

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Message-ID: <20210903091857.70bdf57a@hermes.local>
Date:   Fri, 3 Sep 2021 09:18:57 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Maciej Machnikowski <maciej.machnikowski@...el.com>
Cc:     netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
        richardcochran@...il.com, abyagowi@...com,
        anthony.l.nguyen@...el.com, davem@...emloft.net, kuba@...nel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] rtnetlink: Add new RTM_GETEECSTATE message
 to get SyncE status

On Fri,  3 Sep 2021 17:14:35 +0200
Maciej Machnikowski <maciej.machnikowski@...el.com> wrote:

> This patch series introduces basic interface for reading the Ethernet
> Equipment Clock (EEC) state on a SyncE capable device. This state gives
> information about the state of EEC. This interface is required to
> implement Synchronization Status Messaging on upper layers.
> 
> Initial implementation returns SyncE EEC state and flags attributes.
> The only flag currently implemented is the EEC_SRC_PORT. When it's set
> the EEC is synchronized to the recovered clock recovered from the
> current port.
> 
> SyncE EEC state read needs to be implemented as a ndo_get_eec_state
> function.
> 
> Signed-off-by: Maciej Machnikowski <maciej.machnikowski@...el.com>

Is there a simpler way to do this? Seems like you are adding
a lot for a use case specific to a small class of devices.
For example adding a new network device operation adds small
amount of bloat to every other network device in the kernel.