-/**
- * Retrieve the master device for representor in the same switch domain.
- *
- * @param dev
- * Pointer to representor Ethernet device structure.
- *
- * @return
- * Master device structure on success, NULL otherwise.
- */
-
-static struct rte_eth_dev *
-mlx5_find_master_dev(struct rte_eth_dev *dev)
-{
- struct mlx5_priv *priv;
- uint16_t port_id;
- uint16_t domain_id;
-
- priv = dev->data->dev_private;
- domain_id = priv->domain_id;
- MLX5_ASSERT(priv->representor);
- MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
- struct mlx5_priv *opriv =
- rte_eth_devices[port_id].data->dev_private;
- if (opriv &&
- opriv->master &&
- opriv->domain_id == domain_id &&
- opriv->sh == priv->sh)
- return &rte_eth_devices[port_id];
- }
- return NULL;
-}
-
-/**
- * DPDK callback to retrieve physical link information.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param[out] link
- * Storage for current link status.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
- struct rte_eth_link *link)
-{
- struct mlx5_priv *priv = dev->data->dev_private;
- struct ethtool_cmd edata = {
- .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
- };
- struct ifreq ifr;
- struct rte_eth_link dev_link;
- int link_speed = 0;
- int ret;
-
- ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
- if (ret) {
- DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
- dev->data->port_id, strerror(rte_errno));
- return ret;
- }
- dev_link = (struct rte_eth_link) {
- .link_status = ((ifr.ifr_flags & IFF_UP) &&
- (ifr.ifr_flags & IFF_RUNNING)),
- };
- ifr = (struct ifreq) {
- .ifr_data = (void *)&edata,
- };
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
- if (ret) {
- if (ret == -ENOTSUP && priv->representor) {
- struct rte_eth_dev *master;
-
- /*
- * For representors we can try to inherit link
- * settings from the master device. Actually
- * link settings do not make a lot of sense
- * for representors due to missing physical
- * link. The old kernel drivers supported
- * emulated settings query for representors,
- * the new ones do not, so we have to add
- * this code for compatibility issues.
- */
- master = mlx5_find_master_dev(dev);
- if (master) {
- ifr = (struct ifreq) {
- .ifr_data = (void *)&edata,
- };
- ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
- }
- }
- if (ret) {
- DRV_LOG(WARNING,
- "port %u ioctl(SIOCETHTOOL,"
- " ETHTOOL_GSET) failed: %s",
- dev->data->port_id, strerror(rte_errno));
- return ret;
- }
- }
- link_speed = ethtool_cmd_speed(&edata);
- if (link_speed == -1)
- dev_link.link_speed = ETH_SPEED_NUM_NONE;
- else
- dev_link.link_speed = link_speed;
- priv->link_speed_capa = 0;
- if (edata.supported & SUPPORTED_Autoneg)
- priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
- if (edata.supported & (SUPPORTED_1000baseT_Full |
- SUPPORTED_1000baseKX_Full))
- priv->link_speed_capa |= ETH_LINK_SPEED_1G;
- if (edata.supported & SUPPORTED_10000baseKR_Full)
- priv->link_speed_capa |= ETH_LINK_SPEED_10G;
- if (edata.supported & (SUPPORTED_40000baseKR4_Full |
- SUPPORTED_40000baseCR4_Full |
- SUPPORTED_40000baseSR4_Full |
- SUPPORTED_40000baseLR4_Full))
- priv->link_speed_capa |= ETH_LINK_SPEED_40G;
- dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
- ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
- dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
- ETH_LINK_SPEED_FIXED);
- if (((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status))) {
- rte_errno = EAGAIN;
- return -rte_errno;
- }
- *link = dev_link;
- return 0;
-}
-
-/**
- * Retrieve physical link information (unlocked version using new ioctl).
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param[out] link
- * Storage for current link status.
- *
- * @return
- * 0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
- struct rte_eth_link *link)
-
-{
- struct mlx5_priv *priv = dev->data->dev_private;
- struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
- struct ifreq ifr;
- struct rte_eth_link dev_link;
- struct rte_eth_dev *master = NULL;
- uint64_t sc;
- int ret;
-
- ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
- if (ret) {
- DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
- dev->data->port_id, strerror(rte_errno));
- return ret;
- }
- dev_link = (struct rte_eth_link) {
- .link_status = ((ifr.ifr_flags & IFF_UP) &&
- (ifr.ifr_flags & IFF_RUNNING)),
- };
- ifr = (struct ifreq) {
- .ifr_data = (void *)&gcmd,
- };
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
- if (ret) {
- if (ret == -ENOTSUP && priv->representor) {
- /*
- * For representors we can try to inherit link
- * settings from the master device. Actually
- * link settings do not make a lot of sense
- * for representors due to missing physical
- * link. The old kernel drivers supported
- * emulated settings query for representors,
- * the new ones do not, so we have to add
- * this code for compatibility issues.
- */
- master = mlx5_find_master_dev(dev);
- if (master) {
- ifr = (struct ifreq) {
- .ifr_data = (void *)&gcmd,
- };
- ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
- }
- }
- if (ret) {
- DRV_LOG(DEBUG,
- "port %u ioctl(SIOCETHTOOL,"
- " ETHTOOL_GLINKSETTINGS) failed: %s",
- dev->data->port_id, strerror(rte_errno));
- return ret;
- }
-
- }
- gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
-
- alignas(struct ethtool_link_settings)
- uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
- sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
- struct ethtool_link_settings *ecmd = (void *)data;
-
- *ecmd = gcmd;
- ifr.ifr_data = (void *)ecmd;
- ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
- if (ret) {
- DRV_LOG(DEBUG,
- "port %u ioctl(SIOCETHTOOL,"
- "ETHTOOL_GLINKSETTINGS) failed: %s",
- dev->data->port_id, strerror(rte_errno));
- return ret;
- }
- dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
- ecmd->speed;
- sc = ecmd->link_mode_masks[0] |
- ((uint64_t)ecmd->link_mode_masks[1] << 32);
- priv->link_speed_capa = 0;
- if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
- priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_1G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_10G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_20G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_40G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_56G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_25G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_50G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_100G;
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_200G;
-
- sc = ecmd->link_mode_masks[2] |
- ((uint64_t)ecmd->link_mode_masks[3] << 32);
- if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT) |
- MLX5_BITSHIFT(
- ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT) |
- MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT)))
- priv->link_speed_capa |= ETH_LINK_SPEED_200G;
- dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
- ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
- dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
- ETH_LINK_SPEED_FIXED);
- if (((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status))) {
- rte_errno = EAGAIN;
- return -rte_errno;
- }
- *link = dev_link;
- return 0;
-}
-
-/**
- * DPDK callback to retrieve physical link information.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param wait_to_complete
- * Wait for request completion.
- *
- * @return
- * 0 if link status was not updated, positive if it was, a negative errno
- * value otherwise and rte_errno is set.
- */
-int
-mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
-{
- int ret;
- struct rte_eth_link dev_link;
- time_t start_time = time(NULL);
- int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
-
- do {
- ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
- if (ret == -ENOTSUP)
- ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
- if (ret == 0)
- break;
- /* Handle wait to complete situation. */
- if ((wait_to_complete || retry) && ret == -EAGAIN) {
- if (abs((int)difftime(time(NULL), start_time)) <
- MLX5_LINK_STATUS_TIMEOUT) {
- usleep(0);
- continue;
- } else {
- rte_errno = EBUSY;
- return -rte_errno;
- }
- } else if (ret < 0) {
- return ret;
- }
- } while (wait_to_complete || retry-- > 0);
- ret = !!memcmp(&dev->data->dev_link, &dev_link,
- sizeof(struct rte_eth_link));
- dev->data->dev_link = dev_link;
- return ret;
-}
-