IFLA_PARENT_DEV_NAME
if (!tb[IFLA_PARENT_DEV_NAME])
const char *devname = nla_data(tb[IFLA_PARENT_DEV_NAME]);
if (nla_put_string(msg, IFLA_PARENT_DEV_NAME, dev_name(&wwandev->dev)))
nla_put_string(skb, IFLA_PARENT_DEV_NAME,
[IFLA_PARENT_DEV_NAME] = { .type = NLA_NUL_STRING },