diff --git a/net/core/devlink.c b/net/core/devlink.c
index 266936c..7f26d10 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -530,6 +530,10 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
 
 	if (!devlink_port->attrs_set)
 		return 0;
+	if (attrs->lanes) {
+		if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
+			return -EMSGSIZE;
+	}
 	if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
 		return -EMSGSIZE;
 	switch (devlink_port->attrs.flavour) {