ACK_SIZE
GET_DURATION(ACK_SIZE, 10));
GET_DURATION(ACK_SIZE, 20));
GET_DURATION(ACK_SIZE, 55));
GET_DURATION(ACK_SIZE, 110));
GET_DURATION(ACK_SIZE, 10));
GET_DURATION(ACK_SIZE, 20));
GET_DURATION(ACK_SIZE, 55));
GET_DURATION(ACK_SIZE, 110));
GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))
GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))