team: add ethtool get_link_ksettings

Like bond, add ethtool get_link_ksettings to show the total speed.

v2: no update, just repost.
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/team/team.c

@@ -2054,9 +2054,34 @@ static void team_ethtool_get_drvinfo(struct net_device *dev,
 	strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
 }
 
+static int team_ethtool_get_link_ksettings(struct net_device *dev,
+					   struct ethtool_link_ksettings *cmd)
+{
+	struct team *team= netdev_priv(dev);
+	unsigned long speed = 0;
+	struct team_port *port;
+
+	cmd->base.duplex = DUPLEX_UNKNOWN;
+	cmd->base.port = PORT_OTHER;
+
+	list_for_each_entry(port, &team->port_list, list) {
+		if (team_port_txable(port)) {
+			if (port->state.speed != SPEED_UNKNOWN)
+				speed += port->state.speed;
+			if (cmd->base.duplex == DUPLEX_UNKNOWN &&
+			    port->state.duplex != DUPLEX_UNKNOWN)
+				cmd->base.duplex = port->state.duplex;
+		}
+	}
+	cmd->base.speed = speed ? : SPEED_UNKNOWN;
+
+	return 0;
+}
+
 static const struct ethtool_ops team_ethtool_ops = {
 	.get_drvinfo		= team_ethtool_get_drvinfo,
 	.get_link		= ethtool_op_get_link,
+	.get_link_ksettings	= team_ethtool_get_link_ksettings,
 };
 
 /***********************