L2TP_ATTR_PW_TYPE
if (!info->attrs[L2TP_ATTR_PW_TYPE]) {
cfg.pw_type = nla_get_u16(info->attrs[L2TP_ATTR_PW_TYPE]);
nla_put_u16(skb, L2TP_ATTR_PW_TYPE, session->pwtype))
[L2TP_ATTR_PW_TYPE] = { .type = NLA_U16, },