Function mlx5_get_module_eeprom

dpdk/drivers/net/mlx5/linux/mlx5_ethdev_os.c:1242–1277

* DPDK callback to retrieve plug-in module EEPROM data. * * @param dev * Pointer to Ethernet device structure. * @param[out] info * Storage for plug-in module EEPROM data. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */

 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
			   struct rte_dev_eeprom_info *info)
{
	struct ethtool_eeprom *eeprom;
	struct ifreq ifr;
	int ret = 0;

	if (!dev) {
		DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
		rte_errno = EINVAL;
		return -rte_errno;
	}
	eeprom = mlx5_malloc(MLX5_MEM_ZERO,
			     (sizeof(struct ethtool_eeprom) + info->length), 0,
			     SOCKET_ID_ANY);
	if (!eeprom) {
		DRV_LOG(WARNING, "port %u cannot allocate memory for "
			"eeprom data", dev->data->port_id);
		rte_errno = ENOMEM;
		return -rte_errno;
	}
	eeprom->cmd = ETHTOOL_GMODULEEEPROM;
	eeprom->offset = info->offset;
	eeprom->len = info->length;
	ifr = (struct ifreq) {
		.ifr_data = (void *)eeprom,
	};
	ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
	if (ret)
		DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
			dev->data->port_id, strerror(rte_errno));
	else
		rte_memcpy(info->data, eeprom->data, info->length);
	mlx5_free(eeprom);
	return ret;
}

/**
 * Read device counters table.