PF_RT_SET_PRIO
snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
{ .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
nlattr_add_u8(nw, PF_RT_SET_PRIO, rule->set_prio[0]);
{ .type = PF_RT_SET_PRIO, .off = _OUT(set_prio[0]), .cb = nlattr_get_uint8 },