nfp: ethtool: fix the display error of `ethtool -m DEVNAME`

commit 4ae97cae07e15d41e5c0ebabba64c6eefdeb0bbe upstream.

The port flag isn't set to `NFP_PORT_CHANGED` when using
`ethtool -m DEVNAME` before, so the port state (e.g. interface)
cannot be updated. Therefore, it caused that `ethtool -m DEVNAME`
sometimes cannot read the correct information.

E.g. `ethtool -m DEVNAME` cannot work when load driver before plug
in optical module, as the port interface is still NONE without port
update.

Now update the port state before sending info to NIC to ensure that
port interface is correct (latest state).

Fixes: 61f7c6f44870 ("nfp: implement ethtool get module EEPROM")
Reviewed-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Yu Xiao <yu.xiao@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20220802093355.69065-1-simon.horman@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index df0afd271a21e983c5ab7a5f58be7f6e81378ccd..e6ee45afd80c7f801f8c0c1706405c70d10c2d21 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -1230,6 +1230,8 @@ nfp_port_get_module_info(struct net_device *netdev,
        u8 data;
 
        port = nfp_port_from_netdev(netdev);
+       /* update port state to get latest interface */
+       set_bit(NFP_PORT_CHANGED, &port->flags);
        eth_port = nfp_port_get_eth_port(port);
        if (!eth_port)
                return -EOPNOTSUPP;