sizeof(struct bnad_drv_stats) / sizeof(u64) +           \
        offsetof(struct bfi_enet_stats, rxf_stats[0]) / sizeof(u64))
 
-static char *bnad_net_stats_strings[BNAD_ETHTOOL_STATS_NUM] = {
+static const char *bnad_net_stats_strings[BNAD_ETHTOOL_STATS_NUM] = {
        "rx_packets",
        "tx_packets",
        "rx_bytes",
        return ret;
 }
 
-static struct ethtool_ops bnad_ethtool_ops = {
+static const struct ethtool_ops bnad_ethtool_ops = {
        .get_settings = bnad_get_settings,
        .set_settings = bnad_set_settings,
        .get_drvinfo = bnad_get_drvinfo,