| 1722 | } |
| 1723 | |
| 1724 | int |
| 1725 | rte_eth_dev_start(uint16_t port_id) |
| 1726 | { |
| 1727 | struct rte_eth_dev *dev; |
| 1728 | struct rte_eth_dev_info dev_info; |
| 1729 | int diag; |
| 1730 | int ret, ret_stop; |
| 1731 | |
| 1732 | RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); |
| 1733 | dev = &rte_eth_devices[port_id]; |
| 1734 | |
| 1735 | if (*dev->dev_ops->dev_start == NULL) |
| 1736 | return -ENOTSUP; |
| 1737 | |
| 1738 | if (dev->data->dev_configured == 0) { |
| 1739 | RTE_ETHDEV_LOG(INFO, |
| 1740 | "Device with port_id=%"PRIu16" is not configured.\n", |
| 1741 | port_id); |
| 1742 | return -EINVAL; |
| 1743 | } |
| 1744 | |
| 1745 | if (dev->data->dev_started != 0) { |
| 1746 | RTE_ETHDEV_LOG(INFO, |
| 1747 | "Device with port_id=%"PRIu16" already started\n", |
| 1748 | port_id); |
| 1749 | return 0; |
| 1750 | } |
| 1751 | |
| 1752 | ret = rte_eth_dev_info_get(port_id, &dev_info); |
| 1753 | if (ret != 0) |
| 1754 | return ret; |
| 1755 | |
| 1756 | /* Lets restore MAC now if device does not support live change */ |
| 1757 | if (*dev_info.dev_flags & RTE_ETH_DEV_NOLIVE_MAC_ADDR) |
| 1758 | eth_dev_mac_restore(dev, &dev_info); |
| 1759 | |
| 1760 | diag = (*dev->dev_ops->dev_start)(dev); |
| 1761 | if (diag == 0) |
| 1762 | dev->data->dev_started = 1; |
| 1763 | else |
| 1764 | return eth_err(port_id, diag); |
| 1765 | |
| 1766 | ret = eth_dev_config_restore(dev, &dev_info, port_id); |
| 1767 | if (ret != 0) { |
| 1768 | RTE_ETHDEV_LOG(ERR, |
| 1769 | "Error during restoring configuration for device (port %u): %s\n", |
| 1770 | port_id, rte_strerror(-ret)); |
| 1771 | ret_stop = rte_eth_dev_stop(port_id); |
| 1772 | if (ret_stop != 0) { |
| 1773 | RTE_ETHDEV_LOG(ERR, |
| 1774 | "Failed to stop device (port %u): %s\n", |
| 1775 | port_id, rte_strerror(-ret_stop)); |
| 1776 | } |
| 1777 | |
| 1778 | return ret; |
| 1779 | } |
| 1780 | |
| 1781 | if (dev->data->dev_conf.intr_conf.lsc == 0) { |