uint8_t *mhr = MHR(frame);
uint8_t len = ((ieee154_header_t*) frame->header)->length & FRAMECTL_LENGTH_MASK;
if ((mhr[MHR_INDEX_FC1] & FC1_FRAMETYPE_MASK) == FC1_FRAMETYPE_BEACON) {
uint8_t *mhr = MHR(frame);
uint8_t len = ((ieee154_header_t*) frame->header)->length & FRAMECTL_LENGTH_MASK;
if ((mhr[MHR_INDEX_FC1] & FC1_FRAMETYPE_MASK) == FC1_FRAMETYPE_BEACON) {