GET_DURATION
bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
GET_DURATION(ACK_SIZE, 10));
GET_DURATION(ACK_SIZE, 20));
GET_DURATION(ACK_SIZE, 55));
GET_DURATION(ACK_SIZE, 110));
bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
GET_DURATION(ACK_SIZE, 10));
GET_DURATION(ACK_SIZE, 20));
GET_DURATION(ACK_SIZE, 55));
GET_DURATION(ACK_SIZE, 110));
bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))
GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))
duration = GET_DURATION(data_length, hwrate->bitrate);