find_zero_bit
sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, code, 1);
sfp->sfp_eth = find_zero_bit(sfp_eth_table, code, 1);
find_zero_bit(sfp_eth_1040g_table, code, 1);
sfp->sfp_eth_10g = find_zero_bit(sfp_eth_10g_table, buf[0], 1);
sfp->sfp_eth = find_zero_bit(sfp_eth_table, buf[3], 1);
sfp->sfp_fc_len = find_zero_bit(sfp_fc_len_table, buf[4], 1);
sfp->sfp_fc_media = find_zero_bit(sfp_fc_media_table, buf[6], 1);
sfp->sfp_fc_speed = find_zero_bit(sfp_fc_speed_table, buf[7], 1);
find_zero_bit(sfp_cab_tech_table, (buf[4] << 8) | buf[5], 2);