/* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. * Copyright 2015 Mellanox Technologies, Ltd */ #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mlx5.h" #include "mlx5_glue.h" #include "mlx5_rxtx.h" #include "mlx5_utils.h" /* Add defines in case the running kernel is not the same as user headers. */ #ifndef ETHTOOL_GLINKSETTINGS struct ethtool_link_settings { uint32_t cmd; uint32_t speed; uint8_t duplex; uint8_t port; uint8_t phy_address; uint8_t autoneg; uint8_t mdio_support; uint8_t eth_to_mdix; uint8_t eth_tp_mdix_ctrl; int8_t link_mode_masks_nwords; uint32_t reserved[8]; uint32_t link_mode_masks[]; }; #define ETHTOOL_GLINKSETTINGS 0x0000004c #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 #endif #ifndef HAVE_ETHTOOL_LINK_MODE_25G #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 #endif #ifndef HAVE_ETHTOOL_LINK_MODE_50G #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 #endif #ifndef HAVE_ETHTOOL_LINK_MODE_100G #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 #endif /** * Get interface name from private structure. * * @param[in] dev * Pointer to Ethernet device. * @param[out] ifname * Interface name output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE]) { struct priv *priv = dev->data->dev_private; DIR *dir; struct dirent *dent; unsigned int dev_type = 0; unsigned int dev_port_prev = ~0u; char match[IF_NAMESIZE] = ""; { MKSTR(path, "%s/device/net", priv->ibdev_path); dir = opendir(path); if (dir == NULL) { rte_errno = errno; return -rte_errno; } } while ((dent = readdir(dir)) != NULL) { char *name = dent->d_name; FILE *file; unsigned int dev_port; int r; if ((name[0] == '.') && ((name[1] == '\0') || ((name[1] == '.') && (name[2] == '\0')))) continue; MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, name, (dev_type ? "dev_id" : "dev_port")); file = fopen(path, "rb"); if (file == NULL) { if (errno != ENOENT) continue; /* * Switch to dev_id when dev_port does not exist as * is the case with Linux kernel versions < 3.15. */ try_dev_id: match[0] = '\0'; if (dev_type) break; dev_type = 1; dev_port_prev = ~0u; rewinddir(dir); continue; } r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); fclose(file); if (r != 1) continue; /* * Switch to dev_id when dev_port returns the same value for * all ports. May happen when using a MOFED release older than * 3.0 with a Linux kernel >= 3.15. */ if (dev_port == dev_port_prev) goto try_dev_id; dev_port_prev = dev_port; if (dev_port == (priv->port - 1u)) strlcpy(match, name, sizeof(match)); } closedir(dir); if (match[0] == '\0') { rte_errno = ENOENT; return -rte_errno; } strncpy(*ifname, match, sizeof(*ifname)); return 0; } /** * Get the interface index from device name. * * @param[in] dev * Pointer to Ethernet device. * * @return * Interface index on success, a negative errno value otherwise and * rte_errno is set. */ int mlx5_ifindex(const struct rte_eth_dev *dev) { char ifname[IF_NAMESIZE]; int ret; ret = mlx5_get_ifname(dev, &ifname); if (ret) return ret; ret = if_nametoindex(ifname); if (ret == -1) { rte_errno = errno; return -rte_errno; } return ret; } /** * Perform ifreq ioctl() on associated Ethernet device. * * @param[in] dev * Pointer to Ethernet device. * @param req * Request number to pass to ioctl(). * @param[out] ifr * Interface request structure output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr) { int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); int ret = 0; if (sock == -1) { rte_errno = errno; return -rte_errno; } ret = mlx5_get_ifname(dev, &ifr->ifr_name); if (ret) goto error; ret = ioctl(sock, req, ifr); if (ret == -1) { rte_errno = errno; goto error; } close(sock); return 0; error: close(sock); return -rte_errno; } /** * Get device MTU. * * @param dev * Pointer to Ethernet device. * @param[out] mtu * MTU value output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu) { struct ifreq request; int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request); if (ret) return ret; *mtu = request.ifr_mtu; return 0; } /** * Set device MTU. * * @param dev * Pointer to Ethernet device. * @param mtu * MTU value to set. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) { struct ifreq request = { .ifr_mtu = mtu, }; return mlx5_ifreq(dev, SIOCSIFMTU, &request); } /** * Set device flags. * * @param dev * Pointer to Ethernet device. * @param keep * Bitmask for flags that must remain untouched. * @param flags * Bitmask for flags to modify. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags) { struct ifreq request; int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request); if (ret) return ret; request.ifr_flags &= keep; request.ifr_flags |= flags & ~keep; return mlx5_ifreq(dev, SIOCSIFFLAGS, &request); } /** * DPDK callback for Ethernet device configuration. * * @param dev * Pointer to Ethernet device structure. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_dev_configure(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; unsigned int rxqs_n = dev->data->nb_rx_queues; unsigned int txqs_n = dev->data->nb_tx_queues; unsigned int i; unsigned int j; unsigned int reta_idx_n; const uint8_t use_app_rss_key = !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; int ret = 0; if (use_app_rss_key && (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != rss_hash_default_key_len)) { DRV_LOG(ERR, "port %u RSS key len must be %zu Bytes long", dev->data->port_id, rss_hash_default_key_len); rte_errno = EINVAL; return -rte_errno; } priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key, rss_hash_default_key_len, 0); if (!priv->rss_conf.rss_key) { DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)", dev->data->port_id, rxqs_n); rte_errno = ENOMEM; return -rte_errno; } memcpy(priv->rss_conf.rss_key, use_app_rss_key ? dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : rss_hash_default_key, rss_hash_default_key_len); priv->rss_conf.rss_key_len = rss_hash_default_key_len; priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; priv->rxqs = (void *)dev->data->rx_queues; priv->txqs = (void *)dev->data->tx_queues; if (txqs_n != priv->txqs_n) { DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u", dev->data->port_id, priv->txqs_n, txqs_n); priv->txqs_n = txqs_n; } if (rxqs_n > priv->config.ind_table_max_size) { DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", dev->data->port_id, rxqs_n); rte_errno = EINVAL; return -rte_errno; } if (rxqs_n == priv->rxqs_n) return 0; DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", dev->data->port_id, priv->rxqs_n, rxqs_n); priv->rxqs_n = rxqs_n; /* If the requested number of RX queues is not a power of two, use the * maximum indirection table size for better balancing. * The result is always rounded to the next power of two. */ reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? priv->config.ind_table_max_size : rxqs_n)); ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); if (ret) return ret; /* When the number of RX queues is not a power of two, the remaining * table entries are padded with reused WQs and hashes are not spread * uniformly. */ for (i = 0, j = 0; (i != reta_idx_n); ++i) { (*priv->reta_idx)[i] = j; if (++j == rxqs_n) j = 0; } return 0; } /** * Sets default tuning parameters. * * @param dev * Pointer to Ethernet device. * @param[out] info * Info structure output buffer. */ static void mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { struct priv *priv = dev->data->dev_private; /* Minimum CPU utilization. */ info->default_rxportconf.ring_size = 256; info->default_txportconf.ring_size = 256; info->default_rxportconf.burst_size = 64; info->default_txportconf.burst_size = 64; if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { info->default_rxportconf.nb_queues = 16; info->default_txportconf.nb_queues = 16; if (dev->data->nb_rx_queues > 2 || dev->data->nb_tx_queues > 2) { /* Max Throughput. */ info->default_rxportconf.ring_size = 2048; info->default_txportconf.ring_size = 2048; } } else { info->default_rxportconf.nb_queues = 8; info->default_txportconf.nb_queues = 8; if (dev->data->nb_rx_queues > 2 || dev->data->nb_tx_queues > 2) { /* Max Throughput. */ info->default_rxportconf.ring_size = 4096; info->default_txportconf.ring_size = 4096; } } } /** * DPDK callback to get information about the device. * * @param dev * Pointer to Ethernet device structure. * @param[out] info * Info structure output buffer. */ void mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { struct priv *priv = dev->data->dev_private; struct mlx5_dev_config *config = &priv->config; unsigned int max; char ifname[IF_NAMESIZE]; /* FIXME: we should ask the device for these values. */ info->min_rx_bufsize = 32; info->max_rx_pktlen = 65536; /* * Since we need one CQ per QP, the limit is the minimum number * between the two values. */ max = RTE_MIN(priv->device_attr.orig_attr.max_cq, priv->device_attr.orig_attr.max_qp); /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ if (max >= 65535) max = 65535; info->max_rx_queues = max; info->max_tx_queues = max; info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); info->rx_offload_capa = (mlx5_get_rx_port_offloads() | info->rx_queue_offload_capa); info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); if (mlx5_get_ifname(dev, &ifname) == 0) info->if_index = if_nametoindex(ifname); info->reta_size = priv->reta_idx_n ? priv->reta_idx_n : config->ind_table_max_size; info->hash_key_size = rss_hash_default_key_len; info->speed_capa = priv->link_speed_capa; info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; mlx5_set_default_params(dev, info); } /** * Get supported packet types. * * @param dev * Pointer to Ethernet device structure. * * @return * A pointer to the supported Packet types array. */ const uint32_t * mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) { static const uint32_t ptypes[] = { /* refers to rxq_cq_to_pkt_type() */ RTE_PTYPE_L2_ETHER, RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, RTE_PTYPE_L4_NONFRAG, RTE_PTYPE_L4_FRAG, RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP, RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, RTE_PTYPE_INNER_L4_NONFRAG, RTE_PTYPE_INNER_L4_FRAG, RTE_PTYPE_INNER_L4_TCP, RTE_PTYPE_INNER_L4_UDP, RTE_PTYPE_UNKNOWN }; if (dev->rx_pkt_burst == mlx5_rx_burst || dev->rx_pkt_burst == mlx5_rx_burst_vec) return ptypes; 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 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; } memset(&dev_link, 0, sizeof(dev_link)); dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && (ifr.ifr_flags & IFF_RUNNING)); ifr.ifr_data = (void *)&edata; ret = mlx5_ifreq(dev, 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 priv *priv = dev->data->dev_private; struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; struct ifreq ifr; struct rte_eth_link dev_link; 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; } memset(&dev_link, 0, sizeof(dev_link)); dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && (ifr.ifr_flags & IFF_RUNNING)); ifr.ifr_data = (void *)&gcmd; ret = mlx5_ifreq(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; } 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(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; 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; 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); do { ret = mlx5_link_update_unlocked_gs(dev, &dev_link); if (ret) ret = mlx5_link_update_unlocked_gset(dev, &dev_link); if (ret == 0) break; /* Handle wait to complete situation. */ if (wait_to_complete && 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); ret = !!memcmp(&dev->data->dev_link, &dev_link, sizeof(struct rte_eth_link)); dev->data->dev_link = dev_link; return ret; } /** * DPDK callback to change the MTU. * * @param dev * Pointer to Ethernet device structure. * @param in_mtu * New MTU. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) { struct priv *priv = dev->data->dev_private; uint16_t kern_mtu = 0; int ret; ret = mlx5_get_mtu(dev, &kern_mtu); if (ret) return ret; /* Set kernel interface MTU first. */ ret = mlx5_set_mtu(dev, mtu); if (ret) return ret; ret = mlx5_get_mtu(dev, &kern_mtu); if (ret) return ret; if (kern_mtu == mtu) { priv->mtu = mtu; DRV_LOG(DEBUG, "port %u adapter MTU set to %u", dev->data->port_id, mtu); return 0; } rte_errno = EAGAIN; return -rte_errno; } /** * DPDK callback to get flow control status. * * @param dev * Pointer to Ethernet device structure. * @param[out] fc_conf * Flow control output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) { struct ifreq ifr; struct ethtool_pauseparam ethpause = { .cmd = ETHTOOL_GPAUSEPARAM }; int ret; ifr.ifr_data = (void *)ðpause; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:" " %s", dev->data->port_id, strerror(rte_errno)); return ret; } fc_conf->autoneg = ethpause.autoneg; if (ethpause.rx_pause && ethpause.tx_pause) fc_conf->mode = RTE_FC_FULL; else if (ethpause.rx_pause) fc_conf->mode = RTE_FC_RX_PAUSE; else if (ethpause.tx_pause) fc_conf->mode = RTE_FC_TX_PAUSE; else fc_conf->mode = RTE_FC_NONE; return 0; } /** * DPDK callback to modify flow control parameters. * * @param dev * Pointer to Ethernet device structure. * @param[in] fc_conf * Flow control parameters. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) { struct ifreq ifr; struct ethtool_pauseparam ethpause = { .cmd = ETHTOOL_SPAUSEPARAM }; int ret; ifr.ifr_data = (void *)ðpause; ethpause.autoneg = fc_conf->autoneg; if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || (fc_conf->mode & RTE_FC_RX_PAUSE)) ethpause.rx_pause = 1; else ethpause.rx_pause = 0; if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || (fc_conf->mode & RTE_FC_TX_PAUSE)) ethpause.tx_pause = 1; else ethpause.tx_pause = 0; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" " failed: %s", dev->data->port_id, strerror(rte_errno)); return ret; } return 0; } /** * Get PCI information from struct ibv_device. * * @param device * Pointer to Ethernet device structure. * @param[out] pci_addr * PCI bus address output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, struct rte_pci_addr *pci_addr) { FILE *file; char line[32]; MKSTR(path, "%s/device/uevent", device->ibdev_path); file = fopen(path, "rb"); if (file == NULL) { rte_errno = errno; return -rte_errno; } while (fgets(line, sizeof(line), file) == line) { size_t len = strlen(line); int ret; /* Truncate long lines. */ if (len == (sizeof(line) - 1)) while (line[(len - 1)] != '\n') { ret = fgetc(file); if (ret == EOF) break; line[(len - 1)] = ret; } /* Extract information. */ if (sscanf(line, "PCI_SLOT_NAME=" "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", &pci_addr->domain, &pci_addr->bus, &pci_addr->devid, &pci_addr->function) == 4) { ret = 0; break; } } fclose(file); return 0; } /** * Device status handler. * * @param dev * Pointer to Ethernet device. * @param events * Pointer to event flags holder. * * @return * Events bitmap of callback process which can be called immediately. */ static uint32_t mlx5_dev_status_handler(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; struct ibv_async_event event; uint32_t ret = 0; if (mlx5_link_update(dev, 0) == -EAGAIN) { usleep(0); return 0; } /* Read all message and acknowledge them. */ for (;;) { if (mlx5_glue->get_async_event(priv->ctx, &event)) break; if ((event.event_type == IBV_EVENT_PORT_ACTIVE || event.event_type == IBV_EVENT_PORT_ERR) && (dev->data->dev_conf.intr_conf.lsc == 1)) ret |= (1 << RTE_ETH_EVENT_INTR_LSC); else if (event.event_type == IBV_EVENT_DEVICE_FATAL && dev->data->dev_conf.intr_conf.rmv == 1) ret |= (1 << RTE_ETH_EVENT_INTR_RMV); else DRV_LOG(DEBUG, "port %u event type %d on not handled", dev->data->port_id, event.event_type); mlx5_glue->ack_async_event(&event); } return ret; } /** * Handle interrupts from the NIC. * * @param[in] intr_handle * Interrupt handler. * @param cb_arg * Callback argument. */ void mlx5_dev_interrupt_handler(void *cb_arg) { struct rte_eth_dev *dev = cb_arg; uint32_t events; events = mlx5_dev_status_handler(dev); if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL); } /** * Handle interrupts from the socket. * * @param cb_arg * Callback argument. */ static void mlx5_dev_handler_socket(void *cb_arg) { struct rte_eth_dev *dev = cb_arg; mlx5_socket_handle(dev); } /** * Uninstall interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; if (dev->data->dev_conf.intr_conf.lsc || dev->data->dev_conf.intr_conf.rmv) rte_intr_callback_unregister(&priv->intr_handle, mlx5_dev_interrupt_handler, dev); if (priv->primary_socket) rte_intr_callback_unregister(&priv->intr_handle_socket, mlx5_dev_handler_socket, dev); priv->intr_handle.fd = 0; priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; priv->intr_handle_socket.fd = 0; priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; } /** * Install interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; int ret; int flags; assert(priv->ctx->async_fd > 0); flags = fcntl(priv->ctx->async_fd, F_GETFL); ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); if (ret) { DRV_LOG(INFO, "port %u failed to change file descriptor async event" " queue", dev->data->port_id); dev->data->dev_conf.intr_conf.lsc = 0; dev->data->dev_conf.intr_conf.rmv = 0; } if (dev->data->dev_conf.intr_conf.lsc || dev->data->dev_conf.intr_conf.rmv) { priv->intr_handle.fd = priv->ctx->async_fd; priv->intr_handle.type = RTE_INTR_HANDLE_EXT; rte_intr_callback_register(&priv->intr_handle, mlx5_dev_interrupt_handler, dev); } ret = mlx5_socket_init(dev); if (ret) DRV_LOG(ERR, "port %u cannot initialise socket: %s", dev->data->port_id, strerror(rte_errno)); else if (priv->primary_socket) { priv->intr_handle_socket.fd = priv->primary_socket; priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; rte_intr_callback_register(&priv->intr_handle_socket, mlx5_dev_handler_socket, dev); } } /** * DPDK callback to bring the link DOWN. * * @param dev * Pointer to Ethernet device structure. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_set_link_down(struct rte_eth_dev *dev) { return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); } /** * DPDK callback to bring the link UP. * * @param dev * Pointer to Ethernet device structure. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_set_link_up(struct rte_eth_dev *dev) { return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); } /** * Configure the TX function to use. * * @param dev * Pointer to private data structure. * * @return * Pointer to selected Tx burst function. */ eth_tx_burst_t mlx5_select_tx_function(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; struct mlx5_dev_config *config = &priv->config; uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | DEV_TX_OFFLOAD_VXLAN_TNL_TSO | DEV_TX_OFFLOAD_GRE_TNL_TSO | DEV_TX_OFFLOAD_IP_TNL_TSO | DEV_TX_OFFLOAD_UDP_TNL_TSO)); int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO | DEV_TX_OFFLOAD_UDP_TNL_TSO | DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM)); int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); assert(priv != NULL); /* Select appropriate TX function. */ if (vlan_insert || tso || swp) return tx_pkt_burst; if (config->mps == MLX5_MPW_ENHANCED) { if (mlx5_check_vec_tx_support(dev) > 0) { if (mlx5_check_raw_vec_tx_support(dev) > 0) tx_pkt_burst = mlx5_tx_burst_raw_vec; else tx_pkt_burst = mlx5_tx_burst_vec; DRV_LOG(DEBUG, "port %u selected enhanced MPW Tx vectorized" " function", dev->data->port_id); } else { tx_pkt_burst = mlx5_tx_burst_empw; DRV_LOG(DEBUG, "port %u selected enhanced MPW Tx function", dev->data->port_id); } } else if (config->mps && (config->txq_inline > 0)) { tx_pkt_burst = mlx5_tx_burst_mpw_inline; DRV_LOG(DEBUG, "port %u selected MPW inline Tx function", dev->data->port_id); } else if (config->mps) { tx_pkt_burst = mlx5_tx_burst_mpw; DRV_LOG(DEBUG, "port %u selected MPW Tx function", dev->data->port_id); } return tx_pkt_burst; } /** * Configure the RX function to use. * * @param dev * Pointer to private data structure. * * @return * Pointer to selected Rx burst function. */ eth_rx_burst_t mlx5_select_rx_function(struct rte_eth_dev *dev) { eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; assert(dev != NULL); if (mlx5_check_vec_rx_support(dev) > 0) { rx_pkt_burst = mlx5_rx_burst_vec; DRV_LOG(DEBUG, "port %u selected Rx vectorized function", dev->data->port_id); } return rx_pkt_burst; } /** * Check if mlx5 device was removed. * * @param dev * Pointer to Ethernet device structure. * * @return * 1 when device is removed, otherwise 0. */ int mlx5_is_removed(struct rte_eth_dev *dev) { struct ibv_device_attr device_attr; struct priv *priv = dev->data->dev_private; if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO) return 1; return 0; }