/* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. * Copyright 2015 Mellanox Technologies, Ltd */ #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 #include #include #include #include #include "mlx5.h" #include "mlx5_rxtx.h" #include "mlx5_utils.h" /* Supported speed values found in /usr/include/linux/ethtool.h */ #ifndef HAVE_SUPPORTED_40000baseKR4_Full #define SUPPORTED_40000baseKR4_Full (1 << 23) #endif #ifndef HAVE_SUPPORTED_40000baseCR4_Full #define SUPPORTED_40000baseCR4_Full (1 << 24) #endif #ifndef HAVE_SUPPORTED_40000baseSR4_Full #define SUPPORTED_40000baseSR4_Full (1 << 25) #endif #ifndef HAVE_SUPPORTED_40000baseLR4_Full #define SUPPORTED_40000baseLR4_Full (1 << 26) #endif #ifndef HAVE_SUPPORTED_56000baseKR4_Full #define SUPPORTED_56000baseKR4_Full (1 << 27) #endif #ifndef HAVE_SUPPORTED_56000baseCR4_Full #define SUPPORTED_56000baseCR4_Full (1 << 28) #endif #ifndef HAVE_SUPPORTED_56000baseSR4_Full #define SUPPORTED_56000baseSR4_Full (1 << 29) #endif #ifndef HAVE_SUPPORTED_56000baseLR4_Full #define SUPPORTED_56000baseLR4_Full (1 << 30) #endif /* 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 master 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_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE]) { DIR *dir; struct dirent *dent; unsigned int dev_type = 0; unsigned int dev_port_prev = ~0u; char match[IF_NAMESIZE] = ""; MLX5_ASSERT(ibdev_path); { MKSTR(path, "%s/device/net", 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", 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 == 0) 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 interface name from private structure. * * This is a port representor-aware version of mlx5_get_master_ifname(). * * @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 mlx5_priv *priv = dev->data->dev_private; unsigned int ifindex; MLX5_ASSERT(priv); MLX5_ASSERT(priv->sh); ifindex = mlx5_ifindex(dev); if (!ifindex) { if (!priv->representor) return mlx5_get_master_ifname(priv->sh->ibdev_path, ifname); rte_errno = ENXIO; return -rte_errno; } if (if_indextoname(ifindex, &(*ifname)[0])) return 0; rte_errno = errno; return -rte_errno; } /** * Get the interface index from device name. * * @param[in] dev * Pointer to Ethernet device. * * @return * Nonzero interface index on success, zero otherwise and rte_errno is set. */ unsigned int mlx5_ifindex(const struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; unsigned int ifindex; MLX5_ASSERT(priv); MLX5_ASSERT(priv->if_index); ifindex = priv->if_index; if (!ifindex) rte_errno = ENXIO; return ifindex; } /** * 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 mlx5_priv *priv = dev->data->dev_private; unsigned int rxqs_n = dev->data->nb_rx_queues; unsigned int txqs_n = dev->data->nb_tx_queues; 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 != MLX5_RSS_HASH_KEY_LEN)) { DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long", dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN)); rte_errno = EINVAL; return -rte_errno; } priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key, MLX5_RSS_HASH_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; } if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH; 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, MLX5_RSS_HASH_KEY_LEN); priv->rss_conf.rss_key_len = MLX5_RSS_HASH_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) { 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; } priv->skip_default_rss_reta = 0; ret = mlx5_proc_priv_init(dev); if (ret) return ret; return 0; } /** * Configure default RSS reta. * * @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_rss_reta(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; unsigned int rxqs_n = dev->data->nb_rx_queues; unsigned int i; unsigned int j; unsigned int reta_idx_n; int ret = 0; unsigned int *rss_queue_arr = NULL; unsigned int rss_queue_n = 0; if (priv->skip_default_rss_reta) return ret; rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0); if (!rss_queue_arr) { DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)", dev->data->port_id, rxqs_n); rte_errno = ENOMEM; return -rte_errno; } for (i = 0, j = 0; i < rxqs_n; i++) { struct mlx5_rxq_data *rxq_data; struct mlx5_rxq_ctrl *rxq_ctrl; rxq_data = (*priv->rxqs)[i]; rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq); if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD) rss_queue_arr[j++] = i; } rss_queue_n = j; if (rss_queue_n > priv->config.ind_table_max_size) { DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", dev->data->port_id, rss_queue_n); rte_errno = EINVAL; rte_free(rss_queue_arr); return -rte_errno; } 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((rss_queue_n & (rss_queue_n - 1)) ? priv->config.ind_table_max_size : rss_queue_n)); ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); if (ret) { rte_free(rss_queue_arr); 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] = rss_queue_arr[j]; if (++j == rss_queue_n) j = 0; } rte_free(rss_queue_arr); return ret; } /** * 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 mlx5_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 = MLX5_RX_DEFAULT_BURST; info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST; 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; } } } /** * Sets tx mbuf limiting parameters. * * @param dev * Pointer to Ethernet device. * @param[out] info * Info structure output buffer. */ static void mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_dev_config *config = &priv->config; unsigned int inlen; uint16_t nb_max; inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ? MLX5_SEND_DEF_INLINE_LEN : (unsigned int)config->txq_inline_max; MLX5_ASSERT(config->txq_inline_min >= 0); inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min); inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX + MLX5_ESEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE * 2); nb_max = (MLX5_WQE_SIZE_MAX + MLX5_ESEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE - inlen) / MLX5_WSEG_SIZE; info->tx_desc_lim.nb_seg_max = nb_max; info->tx_desc_lim.nb_mtu_seg_max = nb_max; } /** * DPDK callback to get information about the device. * * @param dev * Pointer to Ethernet device structure. * @param[out] info * Info structure output buffer. */ int mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_dev_config *config = &priv->config; unsigned int max; /* FIXME: we should ask the device for these values. */ info->min_rx_bufsize = 32; info->max_rx_pktlen = 65536; info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE; /* * Since we need one CQ per QP, the limit is the minimum number * between the two values. */ max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, priv->sh->device_attr.orig_attr.max_qp); /* max_rx_queues is uint16_t. */ max = RTE_MIN(max, (unsigned int)UINT16_MAX); 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); info->if_index = mlx5_ifindex(dev); info->reta_size = priv->reta_idx_n ? priv->reta_idx_n : config->ind_table_max_size; info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; info->speed_capa = priv->link_speed_capa; info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; mlx5_set_default_params(dev, info); mlx5_set_txlimit_params(dev, info); info->switch_info.name = dev->data->name; info->switch_info.domain_id = priv->domain_id; info->switch_info.port_id = priv->representor_id; if (priv->representor) { uint16_t port_id; if (priv->pf_bond >= 0) { /* * Switch port ID is opaque value with driver defined * format. Push the PF index in bonding configurations * in upper four bits of port ID. If we get too many * representors (more than 4K) or PFs (more than 15) * this approach must be reconsidered. */ if ((info->switch_info.port_id >> MLX5_PORT_ID_BONDING_PF_SHIFT) || priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) { DRV_LOG(ERR, "can't update switch port ID" " for bonding device"); MLX5_ASSERT(false); return -ENODEV; } info->switch_info.port_id |= priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT; } MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { struct mlx5_priv *opriv = rte_eth_devices[port_id].data->dev_private; if (!opriv || opriv->representor || opriv->sh != priv->sh || opriv->domain_id != priv->domain_id) continue; /* * Override switch name with that of the master * device. */ info->switch_info.name = opriv->dev_data->name; break; } } return 0; } /** * Get device current raw clock counter * * @param dev * Pointer to Ethernet device structure. * @param[out] time * Current raw clock counter of the device. * * @return * 0 if the clock has correctly been read * The value of errno in case of error */ int mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) { struct mlx5_priv *priv = dev->data->dev_private; struct ibv_context *ctx = priv->sh->ctx; struct ibv_values_ex values; int err = 0; values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK; err = mlx5_glue->query_rt_values_ex(ctx, &values); if (err != 0) { DRV_LOG(WARNING, "Could not query the clock !"); return err; } *clock = values.raw_clock.tv_nsec; return 0; } /** * Get firmware version of a device. * * @param dev * Ethernet device port. * @param fw_ver * String output allocated by caller. * @param fw_size * Size of the output string, including terminating null byte. * * @return * 0 on success, or the size of the non truncated string if too big. */ int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) { struct mlx5_priv *priv = dev->data->dev_private; struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr; size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1; if (fw_size < size) return size; if (fw_ver != NULL) strlcpy(fw_ver, attr->fw_ver, fw_size); return 0; } /** * 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_mprq || dev->rx_pkt_burst == mlx5_rx_burst_vec) return ptypes; return NULL; } /** * 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; 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; } /** * 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 mlx5_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; } /** * Handle asynchronous removal event for entire multiport device. * * @param sh * Infiniband device shared context. */ static void mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) { uint32_t i; for (i = 0; i < sh->max_port; ++i) { struct rte_eth_dev *dev; if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { /* * Or not existing port either no * handler installed for this port. */ continue; } dev = &rte_eth_devices[sh->port[i].ih_port_id]; MLX5_ASSERT(dev); if (dev->data->dev_conf.intr_conf.rmv) _rte_eth_dev_callback_process (dev, RTE_ETH_EVENT_INTR_RMV, NULL); } } /** * Handle shared asynchronous events the NIC (removal event * and link status change). Supports multiport IB device. * * @param cb_arg * Callback argument. */ void mlx5_dev_interrupt_handler(void *cb_arg) { struct mlx5_ibv_shared *sh = cb_arg; struct ibv_async_event event; /* Read all message from the IB device and acknowledge them. */ for (;;) { struct rte_eth_dev *dev; uint32_t tmp; if (mlx5_glue->get_async_event(sh->ctx, &event)) break; /* Retrieve and check IB port index. */ tmp = (uint32_t)event.element.port_num; if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { /* * The DEVICE_FATAL event is called once for * entire device without port specifying. * We should notify all existing ports. */ mlx5_glue->ack_async_event(&event); mlx5_dev_interrupt_device_fatal(sh); continue; } MLX5_ASSERT(tmp && (tmp <= sh->max_port)); if (!tmp) { /* Unsupported devive level event. */ mlx5_glue->ack_async_event(&event); DRV_LOG(DEBUG, "unsupported common event (type %d)", event.event_type); continue; } if (tmp > sh->max_port) { /* Invalid IB port index. */ mlx5_glue->ack_async_event(&event); DRV_LOG(DEBUG, "cannot handle an event (type %d)" "due to invalid IB port index (%u)", event.event_type, tmp); continue; } if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) { /* No handler installed. */ mlx5_glue->ack_async_event(&event); DRV_LOG(DEBUG, "cannot handle an event (type %d)" "due to no handler installed for port %u", event.event_type, tmp); continue; } /* Retrieve ethernet device descriptor. */ tmp = sh->port[tmp - 1].ih_port_id; dev = &rte_eth_devices[tmp]; MLX5_ASSERT(dev); if ((event.event_type == IBV_EVENT_PORT_ACTIVE || event.event_type == IBV_EVENT_PORT_ERR) && dev->data->dev_conf.intr_conf.lsc) { mlx5_glue->ack_async_event(&event); if (mlx5_link_update(dev, 0) == -EAGAIN) { usleep(0); continue; } _rte_eth_dev_callback_process (dev, RTE_ETH_EVENT_INTR_LSC, NULL); continue; } DRV_LOG(DEBUG, "port %u cannot handle an unknown event (type %d)", dev->data->port_id, event.event_type); mlx5_glue->ack_async_event(&event); } } /* * Unregister callback handler safely. The handler may be active * while we are trying to unregister it, in this case code -EAGAIN * is returned by rte_intr_callback_unregister(). This routine checks * the return code and tries to unregister handler again. * * @param handle * interrupt handle * @param cb_fn * pointer to callback routine * @cb_arg * opaque callback parameter */ void mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, rte_intr_callback_fn cb_fn, void *cb_arg) { /* * Try to reduce timeout management overhead by not calling * the timer related routines on the first iteration. If the * unregistering succeeds on first call there will be no * timer calls at all. */ uint64_t twait = 0; uint64_t start = 0; do { int ret; ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg); if (ret >= 0) return; if (ret != -EAGAIN) { DRV_LOG(INFO, "failed to unregister interrupt" " handler (error: %d)", ret); MLX5_ASSERT(false); return; } if (twait) { struct timespec onems; /* Wait one millisecond and try again. */ onems.tv_sec = 0; onems.tv_nsec = NS_PER_S / MS_PER_S; nanosleep(&onems, 0); /* Check whether one second elapsed. */ if ((rte_get_timer_cycles() - start) <= twait) continue; } else { /* * We get the amount of timer ticks for one second. * If this amount elapsed it means we spent one * second in waiting. This branch is executed once * on first iteration. */ twait = rte_get_timer_hz(); MLX5_ASSERT(twait); } /* * Timeout elapsed, show message (once a second) and retry. * We have no other acceptable option here, if we ignore * the unregistering return code the handler will not * be unregistered, fd will be closed and we may get the * crush. Hanging and messaging in the loop seems not to be * the worst choice. */ DRV_LOG(INFO, "Retrying to unregister interrupt handler"); start = rte_get_timer_cycles(); } while (true); } /** * Handle DEVX interrupts from the NIC. * This function is probably called from the DPDK host thread. * * @param cb_arg * Callback argument. */ void mlx5_dev_interrupt_handler_devx(void *cb_arg) { #ifndef HAVE_IBV_DEVX_ASYNC (void)cb_arg; return; #else struct mlx5_ibv_shared *sh = cb_arg; union { struct mlx5dv_devx_async_cmd_hdr cmd_resp; uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) + MLX5_ST_SZ_BYTES(traffic_counter) + sizeof(struct mlx5dv_devx_async_cmd_hdr)]; } out; uint8_t *buf = out.buf + sizeof(out.cmd_resp); while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp, &out.cmd_resp, sizeof(out.buf))) mlx5_flow_async_pool_query_handle (sh, (uint64_t)out.cmd_resp.wr_id, mlx5_devx_get_out_command_status(buf)); #endif /* HAVE_IBV_DEVX_ASYNC */ } /** * Uninstall shared asynchronous device events handler. * This function is implemented to support event sharing * between multiple ports of single IB device. * * @param dev * Pointer to Ethernet device. */ static void mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_ibv_shared *sh = priv->sh; if (rte_eal_process_type() != RTE_PROC_PRIMARY) return; pthread_mutex_lock(&sh->intr_mutex); MLX5_ASSERT(priv->ibv_port); MLX5_ASSERT(priv->ibv_port <= sh->max_port); MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) goto exit; MLX5_ASSERT(sh->port[priv->ibv_port - 1].ih_port_id == (uint32_t)dev->data->port_id); MLX5_ASSERT(sh->intr_cnt); sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; if (!sh->intr_cnt || --sh->intr_cnt) goto exit; mlx5_intr_callback_unregister(&sh->intr_handle, mlx5_dev_interrupt_handler, sh); sh->intr_handle.fd = 0; sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; exit: pthread_mutex_unlock(&sh->intr_mutex); } /** * Uninstall devx shared asynchronous device events handler. * This function is implemeted to support event sharing * between multiple ports of single IB device. * * @param dev * Pointer to Ethernet device. */ static void mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_ibv_shared *sh = priv->sh; if (rte_eal_process_type() != RTE_PROC_PRIMARY) return; pthread_mutex_lock(&sh->intr_mutex); MLX5_ASSERT(priv->ibv_port); MLX5_ASSERT(priv->ibv_port <= sh->max_port); MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS) goto exit; MLX5_ASSERT(sh->port[priv->ibv_port - 1].devx_ih_port_id == (uint32_t)dev->data->port_id); sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS; if (!sh->devx_intr_cnt || --sh->devx_intr_cnt) goto exit; if (sh->intr_handle_devx.fd) { rte_intr_callback_unregister(&sh->intr_handle_devx, mlx5_dev_interrupt_handler_devx, sh); sh->intr_handle_devx.fd = 0; sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN; } if (sh->devx_comp) { mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); sh->devx_comp = NULL; } exit: pthread_mutex_unlock(&sh->intr_mutex); } /** * Install shared asynchronous device events handler. * This function is implemented to support event sharing * between multiple ports of single IB device. * * @param dev * Pointer to Ethernet device. */ static void mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_ibv_shared *sh = priv->sh; int ret; int flags; if (rte_eal_process_type() != RTE_PROC_PRIMARY) return; pthread_mutex_lock(&sh->intr_mutex); MLX5_ASSERT(priv->ibv_port); MLX5_ASSERT(priv->ibv_port <= sh->max_port); MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { /* The handler is already installed for this port. */ MLX5_ASSERT(sh->intr_cnt); goto exit; } if (sh->intr_cnt) { sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; sh->intr_cnt++; goto exit; } /* No shared handler installed. */ MLX5_ASSERT(sh->ctx->async_fd > 0); flags = fcntl(sh->ctx->async_fd, F_GETFL); ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); if (ret) { DRV_LOG(INFO, "failed to change file descriptor async event" " queue"); /* Indicate there will be no interrupts. */ dev->data->dev_conf.intr_conf.lsc = 0; dev->data->dev_conf.intr_conf.rmv = 0; } else { sh->intr_handle.fd = sh->ctx->async_fd; sh->intr_handle.type = RTE_INTR_HANDLE_EXT; rte_intr_callback_register(&sh->intr_handle, mlx5_dev_interrupt_handler, sh); sh->intr_cnt++; sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; } exit: pthread_mutex_unlock(&sh->intr_mutex); } /** * Install devx shared asyncronous device events handler. * This function is implemeted to support event sharing * between multiple ports of single IB device. * * @param dev * Pointer to Ethernet device. */ static void mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_ibv_shared *sh = priv->sh; if (rte_eal_process_type() != RTE_PROC_PRIMARY) return; pthread_mutex_lock(&sh->intr_mutex); MLX5_ASSERT(priv->ibv_port); MLX5_ASSERT(priv->ibv_port <= sh->max_port); MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) { /* The handler is already installed for this port. */ MLX5_ASSERT(sh->devx_intr_cnt); goto exit; } if (sh->devx_intr_cnt) { sh->devx_intr_cnt++; sh->port[priv->ibv_port - 1].devx_ih_port_id = (uint32_t)dev->data->port_id; goto exit; } if (priv->config.devx) { #ifndef HAVE_IBV_DEVX_ASYNC goto exit; #else sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); if (sh->devx_comp) { int flags = fcntl(sh->devx_comp->fd, F_GETFL); int ret = fcntl(sh->devx_comp->fd, F_SETFL, flags | O_NONBLOCK); if (ret) { DRV_LOG(INFO, "failed to change file descriptor" " devx async event queue"); } else { sh->intr_handle_devx.fd = sh->devx_comp->fd; sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; rte_intr_callback_register (&sh->intr_handle_devx, mlx5_dev_interrupt_handler_devx, sh); sh->devx_intr_cnt++; sh->port[priv->ibv_port - 1].devx_ih_port_id = (uint32_t)dev->data->port_id; } } #endif /* HAVE_IBV_DEVX_ASYNC */ } exit: pthread_mutex_unlock(&sh->intr_mutex); } /** * Uninstall interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) { mlx5_dev_shared_handler_uninstall(dev); } /** * Install interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) { mlx5_dev_shared_handler_install(dev); } /** * Devx uninstall interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev) { mlx5_dev_shared_handler_devx_uninstall(dev); } /** * Devx install interrupt handler. * * @param dev * Pointer to Ethernet device. */ void mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev) { mlx5_dev_shared_handler_devx_install(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 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; MLX5_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); } else if (mlx5_mprq_enabled(dev)) { rx_pkt_burst = mlx5_rx_burst_mprq; } 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 mlx5_priv *priv = dev->data->dev_private; if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) return 1; return 0; } /** * Get the E-Switch parameters by port id. * * @param[in] port * Device port id. * @param[in] valid * Device port id is valid, skip check. This flag is useful * when trials are performed from probing and device is not * flagged as valid yet (in attaching process). * @param[out] es_domain_id * E-Switch domain id. * @param[out] es_port_id * The port id of the port in the E-Switch. * * @return * pointer to device private data structure containing data needed * on success, NULL otherwise and rte_errno is set. */ struct mlx5_priv * mlx5_port_to_eswitch_info(uint16_t port, bool valid) { struct rte_eth_dev *dev; struct mlx5_priv *priv; if (port >= RTE_MAX_ETHPORTS) { rte_errno = EINVAL; return NULL; } if (!valid && !rte_eth_dev_is_valid_port(port)) { rte_errno = ENODEV; return NULL; } dev = &rte_eth_devices[port]; priv = dev->data->dev_private; if (!(priv->representor || priv->master)) { rte_errno = EINVAL; return NULL; } return priv; } /** * Get the E-Switch parameters by device instance. * * @param[in] port * Device port id. * @param[out] es_domain_id * E-Switch domain id. * @param[out] es_port_id * The port id of the port in the E-Switch. * * @return * pointer to device private data structure containing data needed * on success, NULL otherwise and rte_errno is set. */ struct mlx5_priv * mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev) { struct mlx5_priv *priv; priv = dev->data->dev_private; if (!(priv->representor || priv->master)) { rte_errno = EINVAL; return NULL; } return priv; } /** * Get switch information associated with network interface. * * @param ifindex * Network interface index. * @param[out] info * Switch information object, populated in case of success. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info) { char ifname[IF_NAMESIZE]; char port_name[IF_NAMESIZE]; FILE *file; struct mlx5_switch_info data = { .master = 0, .representor = 0, .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET, .port_name = 0, .switch_id = 0, }; DIR *dir; bool port_switch_id_set = false; bool device_dir = false; char c; int ret; if (!if_indextoname(ifindex, ifname)) { rte_errno = errno; return -rte_errno; } MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name", ifname); MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", ifname); MKSTR(pci_device, "/sys/class/net/%s/device", ifname); file = fopen(phys_port_name, "rb"); if (file != NULL) { ret = fscanf(file, "%s", port_name); fclose(file); if (ret == 1) mlx5_translate_port_name(port_name, &data); } file = fopen(phys_switch_id, "rb"); if (file == NULL) { rte_errno = errno; return -rte_errno; } port_switch_id_set = fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && c == '\n'; fclose(file); dir = opendir(pci_device); if (dir != NULL) { closedir(dir); device_dir = true; } if (port_switch_id_set) { /* We have some E-Switch configuration. */ mlx5_sysfs_check_switch_info(device_dir, &data); } *info = data; MLX5_ASSERT(!(data.master && data.representor)); if (data.master && data.representor) { DRV_LOG(ERR, "ifindex %u device is recognized as master" " and as representor", ifindex); rte_errno = ENODEV; return -rte_errno; } return 0; } /** * Analyze gathered port parameters via sysfs to recognize master * and representor devices for E-Switch configuration. * * @param[in] device_dir * flag of presence of "device" directory under port device key. * @param[inout] switch_info * Port information, including port name as a number and port name * type if recognized * * @return * master and representor flags are set in switch_info according to * recognized parameters (if any). */ void mlx5_sysfs_check_switch_info(bool device_dir, struct mlx5_switch_info *switch_info) { switch (switch_info->name_type) { case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: /* * Name is not recognized, assume the master, * check the device directory presence. */ switch_info->master = device_dir; break; case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: /* * Name is not set, this assumes the legacy naming * schema for master, just check if there is * a device directory. */ switch_info->master = device_dir; break; case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: /* New uplink naming schema recognized. */ switch_info->master = 1; break; case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: /* Legacy representors naming schema. */ switch_info->representor = !device_dir; break; case MLX5_PHYS_PORT_NAME_TYPE_PFVF: /* New representors naming schema. */ switch_info->representor = 1; break; } } /** * DPDK callback to retrieve plug-in module EEPROM information (type and size). * * @param dev * Pointer to Ethernet device structure. * @param[out] modinfo * Storage for plug-in module EEPROM information. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_get_module_info(struct rte_eth_dev *dev, struct rte_eth_dev_module_info *modinfo) { struct ethtool_modinfo info = { .cmd = ETHTOOL_GMODULEINFO, }; struct ifreq ifr = (struct ifreq) { .ifr_data = (void *)&info, }; int ret = 0; if (!dev || !modinfo) { DRV_LOG(WARNING, "missing argument, cannot get module info"); rte_errno = EINVAL; return -rte_errno; } ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", dev->data->port_id, strerror(rte_errno)); return ret; } modinfo->type = info.type; modinfo->eeprom_len = info.eeprom_len; return ret; } /** * 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. */ 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 || !info) { DRV_LOG(WARNING, "missing argument, cannot get module eeprom"); rte_errno = EINVAL; return -rte_errno; } eeprom = rte_calloc(__func__, 1, (sizeof(struct ethtool_eeprom) + info->length), 0); 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); rte_free(eeprom); return ret; } /** * DPDK callback to retrieve hairpin capabilities. * * @param dev * Pointer to Ethernet device structure. * @param[out] cap * Storage for hairpin capability data. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_hairpin_cap_get(struct rte_eth_dev *dev, struct rte_eth_hairpin_cap *cap) { struct mlx5_priv *priv = dev->data->dev_private; if (priv->sh->devx == 0) { rte_errno = ENOTSUP; return -rte_errno; } cap->max_nb_queues = UINT16_MAX; cap->max_rx_2_tx = 1; cap->max_tx_2_rx = 1; cap->max_nb_desc = 8192; return 0; }