Re: [PATCH net-next 3/4] net: dsa: return -EOPNOTSUPP if .port_lag_join is not implemented

On Sun, Feb 14, 2021 at 17:53, Vladimir Oltean [off-list ref] wrote:

From: Vladimir Oltean <vladimir.oltean@nxp.com>

There is currently some provisioning for DSA to use the software
fallback for link aggregation, but only if the .port_lag_join is
implemented but it fails (for example because there are more link
aggregation groups than the switch supports, or because the xmit hash
policy cannot be done in hardware, or ...).

But when .port_lag_join is not implemented at all, the DSA switch
notifier returns zero and software fallback does not kick in.
Change that.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
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Reviewed-by: Tobias Waldekranz <tobias@waldekranz.com>