iwm_rx_packet_payload_len
if (iwm_rx_packet_payload_len(pkt) == sizeof(*palive)) {
if (iwm_rx_packet_payload_len(pkt) < sizeof(*notif)) {
int resp_len = iwm_rx_packet_payload_len(pkt);
int resp_len = iwm_rx_packet_payload_len(pkt);
resp_len = iwm_rx_packet_payload_len(pkt);