RTL8365MB_MIB_ifOutOctets
[RTL8365MB_MIB_ifOutOctets] = 1,
mac_stats->OctetsTransmittedOK = cnt[RTL8365MB_MIB_ifOutOctets] -
[RTL8365MB_MIB_ifOutOctets] = 1,
cnt[RTL8365MB_MIB_ifOutOctets] - 4 * stats->tx_packets;