IFCOUNTER_OBYTES
if_inc_counter(ifp, IFCOUNTER_OBYTES, tx_bytes);
if_inc_counter(ifp, IFCOUNTER_OBYTES, bytes_sent);
if_inc_counter(ifp, IFCOUNTER_OBYTES, bytes_sent);
if_inc_counter((ifp), IFCOUNTER_OBYTES, len + (adj)); \
case IFCOUNTER_OBYTES:
case IFCOUNTER_OBYTES:
if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len);
if_inc_counter(ifp, IFCOUNTER_OBYTES,