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drivers/net/mlx5/linux/mlx5_ethdev_os.c
2 096 строк
53 KB
Kevin Traynor
net/mlx5: check DevX disconnect/error interrupt events
04 мар 2026, 14:07
04 мар 2026, 14:07
bf0bbe0
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/* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. * Copyright 2015 Mellanox Technologies, Ltd */ #include <stddef.h> #include <inttypes.h> #include <unistd.h> #include <stdbool.h> #include <stdint.h> #include <stdio.h> #include <string.h> #include <stdlib.h> #include <errno.h> #include <dirent.h> #include <net/if.h> #include <sys/ioctl.h> #include <sys/socket.h> #include <netinet/in.h> #include <linux/ethtool.h> #include <linux/sockios.h> #include <fcntl.h> #include <stdalign.h> #include <sys/un.h> #include <time.h> #include <linux/rtnetlink.h> #include <ethdev_linux_ethtool.h> #include <ethdev_driver.h> #include <bus_pci_driver.h> #include <rte_mbuf.h> #include <rte_common.h> #include <rte_eal_paging.h> #include <rte_interrupts.h> #include <rte_malloc.h> #include <rte_string_fns.h> #include <rte_rwlock.h> #include <rte_cycles.h> #include <mlx5_glue.h> #include <mlx5_devx_cmds.h> #include <mlx5_common.h> #include <mlx5_malloc.h> #include <mlx5_nl.h> #include "mlx5.h" #include "mlx5_rxtx.h" #include "mlx5_utils.h" /* Get interface index from SubFunction device name. */ int mlx5_auxiliary_get_ifindex(const char *sf_name) { char if_name[IF_NAMESIZE] = { 0 }; if (mlx5_auxiliary_get_child_name(sf_name, "/net", if_name, sizeof(if_name)) != 0) return -rte_errno; return if_nametoindex(if_name); } /** * Get interface name from private structure. * * This is a port representor-aware version of mlx5_get_ifname_sysfs(). * * @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[MLX5_NAMESIZE]) { struct mlx5_priv *priv = dev->data->dev_private; unsigned int ifindex; MLX5_ASSERT(priv); MLX5_ASSERT(priv->sh); if (priv->master && priv->sh->bond.ifindex > 0) { memcpy(ifname, priv->sh->bond.ifname, MLX5_NAMESIZE); return 0; } ifindex = mlx5_ifindex(dev); if (!ifindex) { if (!priv->representor) return mlx5_get_ifname_sysfs(priv->sh->ibdev_path, ifname); rte_errno = ENXIO; return -rte_errno; } if (if_indextoname(ifindex, ifname)) return 0; rte_errno = errno; return -rte_errno; } /** * Perform ifreq ioctl() on associated netdev ifname. * * @param[in] ifname * Pointer to netdev name. * @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. */ static int mlx5_ifreq_by_ifname(const char *ifname, 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; } rte_strscpy(ifr->ifr_name, ifname, sizeof(ifr->ifr_name)); ret = ioctl(sock, req, ifr); if (ret == -1) { rte_errno = errno; goto error; } close(sock); return 0; error: close(sock); return -rte_errno; } /** * 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. */ static int mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr) { char ifname[MLX5_NAMESIZE]; int ret; ret = mlx5_get_ifname(dev, ifname); if (ret) return -rte_errno; return mlx5_ifreq_by_ifname(ifname, req, ifr); } /** * Get device minimum and maximum allowed MTU values. * * @param dev * Pointer to Ethernet device. * @param[out] min_mtu * Minimum MTU value output buffer. * @param[out] max_mtu * Maximum MTU value output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_os_get_mtu_bounds(struct rte_eth_dev *dev, uint16_t *min_mtu, uint16_t *max_mtu) { struct mlx5_priv *priv = dev->data->dev_private; int nl_route; int ret; nl_route = mlx5_nl_init(NETLINK_ROUTE, 0); if (nl_route < 0) return nl_route; ret = mlx5_nl_get_mtu_bounds(nl_route, priv->if_index, min_mtu, max_mtu); close(nl_route); return ret; } /** * 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. */ 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. */ static 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); } /** * 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->cdev->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; } /** * 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, dev->device) { 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 = RTE_ETH_SPEED_NUM_UNKNOWN; else dev_link.link_speed = link_speed; dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? RTE_ETH_LINK_HALF_DUPLEX : RTE_ETH_LINK_FULL_DUPLEX); dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & RTE_ETH_LINK_SPEED_FIXED); *link = dev_link; priv->link_speed_capa = rte_eth_link_speed_gset(edata.supported); 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; 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) ? RTE_ETH_SPEED_NUM_UNKNOWN : ecmd->speed; dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? RTE_ETH_LINK_HALF_DUPLEX : RTE_ETH_LINK_FULL_DUPLEX); dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & RTE_ETH_LINK_SPEED_FIXED); *link = dev_link; priv->link_speed_capa = rte_eth_link_speed_glink(ecmd->link_mode_masks, ecmd->link_mode_masks_nwords); 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 = { 0 }; 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) { memset(&dev->data->dev_link, 0, sizeof(dev->data->dev_link)); 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 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(DEBUG, "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_ETH_FC_FULL; else if (ethpause.rx_pause) fc_conf->mode = RTE_ETH_FC_RX_PAUSE; else if (ethpause.tx_pause) fc_conf->mode = RTE_ETH_FC_TX_PAUSE; else fc_conf->mode = RTE_ETH_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_ETH_FC_FULL) == RTE_ETH_FC_FULL) || (fc_conf->mode & RTE_ETH_FC_RX_PAUSE)) ethpause.rx_pause = 1; else ethpause.rx_pause = 0; if (((fc_conf->mode & RTE_ETH_FC_FULL) == RTE_ETH_FC_FULL) || (fc_conf->mode & RTE_ETH_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_dev_ctx_shared *sh) { uint32_t i; for (i = 0; i < sh->max_port; ++i) { struct rte_eth_dev *dev; struct mlx5_priv *priv; 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); priv = dev->data->dev_private; MLX5_ASSERT(priv); if (!priv->rmv_notified && dev->data->dev_conf.intr_conf.rmv) { /* Notify driver about removal only once. */ priv->rmv_notified = 1; rte_eth_dev_callback_process (dev, RTE_ETH_EVENT_INTR_RMV, NULL); } } } static bool mlx5_dev_nl_ifindex_verify(uint32_t if_index, struct mlx5_priv *priv) { struct mlx5_bond_info *bond = &priv->sh->bond; int i; if (bond->n_port == 0) return (if_index == priv->if_index); if (if_index == bond->ifindex) return true; for (i = 0; i < MLX5_BOND_MAX_PORTS; i++) { if (!strlen(priv->sh->bond.ports[i].ifname)) continue; if (if_index == bond->ports[i].ifindex) return true; } return false; } static void mlx5_link_update_bond(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_bond_info *bond = &priv->sh->bond; struct ifreq ifr = (struct ifreq) { .ifr_flags = 0, }; int ret; ret = mlx5_ifreq_by_ifname(bond->ifname, SIOCGIFFLAGS, &ifr); if (ret) { DRV_LOG(WARNING, "ifname %s ioctl(SIOCGIFFLAGS) failed: %s", bond->ifname, strerror(rte_errno)); return; } dev->data->dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && (ifr.ifr_flags & IFF_RUNNING)); } static void mlx5_dev_interrupt_nl_cb(struct nlmsghdr *hdr, void *cb_arg) { struct mlx5_dev_ctx_shared *sh = cb_arg; uint32_t i; uint32_t if_index; if (mlx5_nl_parse_link_status_update(hdr, &if_index) < 0) return; for (i = 0; i < sh->max_port; i++) { struct mlx5_dev_shared_port *port = &sh->port[i]; struct rte_eth_dev *dev; struct mlx5_priv *priv; if (port->nl_ih_port_id >= RTE_MAX_ETHPORTS) continue; dev = &rte_eth_devices[port->nl_ih_port_id]; /* Probing may initiate an LSC before configuration is done. */ if (dev->data->dev_configured && !dev->data->dev_conf.intr_conf.lsc) break; priv = dev->data->dev_private; if (mlx5_dev_nl_ifindex_verify(if_index, priv)) { /* Block logical LSC events. */ uint16_t prev_status = dev->data->dev_link.link_status; if (mlx5_link_update(dev, 0) < 0) { DRV_LOG(ERR, "Failed to update link status: %s", rte_strerror(rte_errno)); } else { if (priv->sh->bond.n_port) mlx5_link_update_bond(dev); if (prev_status != dev->data->dev_link.link_status) rte_eth_dev_callback_process (dev, RTE_ETH_EVENT_INTR_LSC, NULL); } break; } } } void mlx5_dev_interrupt_handler_nl(void *arg) { struct mlx5_dev_ctx_shared *sh = arg; int nlsk_fd = rte_intr_fd_get(sh->intr_handle_nl); if (nlsk_fd < 0) return; if (mlx5_nl_read_events(nlsk_fd, mlx5_dev_interrupt_nl_cb, sh) < 0) DRV_LOG(ERR, "Failed to process Netlink events: %s", rte_strerror(rte_errno)); } /** * 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_dev_ctx_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->cdev->ctx, &event)) { if (errno == EIO) { DRV_LOG(DEBUG, "IBV async event queue closed on: %s", sh->ibdev_name); mlx5_dev_interrupt_device_fatal(sh); } break; } if (event.event_type == IBV_EVENT_DEVICE_FATAL) { /* * The DEVICE_FATAL event can be called by kernel * twice - from mlx5 and uverbs layers, and port * index is not applicable. We should notify all * existing ports. */ mlx5_dev_interrupt_device_fatal(sh); mlx5_glue->ack_async_event(&event); continue; } /* Retrieve and check IB port index. */ tmp = (uint32_t)event.element.port_num; MLX5_ASSERT(tmp <= sh->max_port); if (!tmp) { /* Unsupported device 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); 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); } } /** * 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_dev_ctx_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); uint32_t events = rte_intr_active_events_flags(); if (events & (RTE_INTR_EVENT_HUP | RTE_INTR_EVENT_RDHUP | RTE_INTR_EVENT_ERR)) { /* * Disconnect or Error event that cannot be cleared by reading. * Unregister callback to prevent interrupt busy-looping. */ DRV_LOG(WARNING, "disconnect or error event for mlx5 devx interrupt on fd %d" " (events=0x%x)", rte_intr_fd_get(sh->intr_handle_devx), events); if (rte_intr_callback_unregister_pending(sh->intr_handle_devx, mlx5_dev_interrupt_handler_devx, (void *)sh, NULL) < 0) { DRV_LOG(WARNING, "unable to unregister mlx5 devx interrupt callback on fd %d", rte_intr_fd_get(sh->intr_handle_devx)); } return; } 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 */ } static void mlx5_dev_interrupt_ib_cb(struct nlmsghdr *hdr, void *cb_arg) { mlx5_nl_rdma_monitor_info_get(hdr, (struct mlx5_nl_port_info *)cb_arg); } void mlx5_dev_interrupt_handler_ib(void *arg) { struct mlx5_dev_ctx_shared *sh = arg; struct mlx5_nl_port_info data = { .flags = 0, .name = "", .ifindex = 0, .ibindex = 0, .portnum = 0, }; int nlsk_fd = rte_intr_fd_get(sh->intr_handle_ib); struct mlx5_dev_info *dev_info; uint32_t i; dev_info = &sh->cdev->dev_info; DRV_LOG(DEBUG, "IB device %s received RDMA monitor netlink event", dev_info->ibname); if (dev_info->port_num <= 1 || dev_info->port_info == NULL) return; if (nlsk_fd < 0) return; if (mlx5_nl_read_events(nlsk_fd, mlx5_dev_interrupt_ib_cb, &data) < 0) DRV_LOG(ERR, "Failed to process Netlink events: %s", rte_strerror(rte_errno)); if (!(data.flags & MLX5_NL_CMD_GET_EVENT_TYPE) || !(data.flags & MLX5_NL_CMD_GET_PORT_INDEX) || !(data.flags & MLX5_NL_CMD_GET_IB_INDEX)) return; if (data.ibindex != dev_info->ibindex) return; if (data.event_type != MLX5_NL_RDMA_NETDEV_ATTACH_EVENT && data.event_type != MLX5_NL_RDMA_NETDEV_DETACH_EVENT) return; if (data.event_type == MLX5_NL_RDMA_NETDEV_ATTACH_EVENT && !(data.flags & MLX5_NL_CMD_GET_NET_INDEX)) { DRV_LOG(WARNING, "Incomplete RDMA ATTACH event for ibdev[%d]", dev_info->ibindex); if (data.flags & MLX5_NL_CMD_GET_PORT_INDEX) memset(dev_info->port_info + data.portnum, 0, sizeof(struct mlx5_port_nl_info)); else goto flush_all; return; } DRV_LOG(INFO, "Event info: type %d, ibindex %d, ifindex %d, portnum %d,", data.event_type, data.ibindex, data.ifindex, data.portnum); /* Changes found in number of SF/VF ports. All information is likely unreliable. */ if (data.portnum > dev_info->port_num) { DRV_LOG(ERR, "Port[%d] exceeds maximum[%d]", data.portnum, dev_info->port_num); goto flush_all; } if (data.event_type == MLX5_NL_RDMA_NETDEV_ATTACH_EVENT) { if (!dev_info->port_info[data.portnum].ifindex) { dev_info->port_info[data.portnum].ifindex = data.ifindex; dev_info->port_info[data.portnum].valid = 1; } else { DRV_LOG(WARNING, "Duplicate RDMA event for port[%d] ifindex[%d]", data.portnum, data.ifindex); if (data.ifindex != dev_info->port_info[data.portnum].ifindex) goto flush_all; } } else if (data.event_type == MLX5_NL_RDMA_NETDEV_DETACH_EVENT) { dev_info->port_info[data.portnum].ifindex = 0; } return; flush_all: for (i = 1; i <= dev_info->port_num; i++) { dev_info->port_info[i].ifindex = 0; dev_info->port_info[i].valid = 0; } } /** * 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); } /** * 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->cdev->ctx, &device_attr) == EIO) return 1; 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). */ static 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_PFHPF: /* Fallthrough */ case MLX5_PHYS_PORT_NAME_TYPE_PFVF: /* Fallthrough */ case MLX5_PHYS_PORT_NAME_TYPE_PFSF: /* New representors naming schema. */ switch_info->representor = 1; break; default: switch_info->master = device_dir; break; } } /** * 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 = NULL; size_t port_name_size = 0; 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; ssize_t line_size; 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) { char *tail_nl; line_size = getline(&port_name, &port_name_size, file); if (line_size < 0) { free(port_name); fclose(file); rte_errno = errno; return -rte_errno; } else if (line_size > 0) { /* Remove tailing newline character. */ tail_nl = strchr(port_name, '\n'); if (tail_nl) *tail_nl = '\0'; mlx5_translate_port_name(port_name, &data); } free(port_name); fclose(file); } 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; } /** * Get bond information associated with network interface. * * @param pf_ifindex * Network interface index of bond slave interface * @param[out] ifindex * Pointer to bond ifindex. * @param[out] ifname * Pointer to bond ifname. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_sysfs_bond_info(unsigned int pf_ifindex, unsigned int *ifindex, char *ifname) { char name[IF_NAMESIZE]; FILE *file; unsigned int index; int ret; if (!if_indextoname(pf_ifindex, name) || !strlen(name)) { rte_errno = errno; return -rte_errno; } MKSTR(bond_if, "/sys/class/net/%s/master/ifindex", name); /* read bond ifindex */ file = fopen(bond_if, "rb"); if (file == NULL) { rte_errno = errno; return -rte_errno; } ret = fscanf(file, "%u", &index); fclose(file); if (ret <= 0) { rte_errno = errno; return -rte_errno; } if (ifindex) *ifindex = index; /* read bond device name from symbol link */ if (ifname) { if (!if_indextoname(index, ifname)) { rte_errno = errno; return -rte_errno; } } return 0; } /** * 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) { 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) { DRV_LOG(WARNING, "missing argument, cannot get module eeprom"); rte_errno = EINVAL; return -rte_errno; } eeprom = mlx5_malloc(MLX5_MEM_ZERO, (sizeof(struct ethtool_eeprom) + info->length), 0, SOCKET_ID_ANY); if (!eeprom) { DRV_LOG(WARNING, "port %u cannot allocate memory for " "eeprom data", dev->data->port_id); rte_errno = ENOMEM; return -rte_errno; } eeprom->cmd = ETHTOOL_GMODULEEEPROM; eeprom->offset = info->offset; eeprom->len = info->length; ifr = (struct ifreq) { .ifr_data = (void *)eeprom, }; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", dev->data->port_id, strerror(rte_errno)); else rte_memcpy(info->data, eeprom->data, info->length); mlx5_free(eeprom); return ret; } /** * Read device counters table. * * @param dev * Pointer to Ethernet device. * @param[in] pf * PF index in case of bonding device, -1 otherwise * @param[out] stats * Counters table output buffer. * * @return * 0 on success and stats is filled, negative errno value otherwise and * rte_errno is set. */ static int _mlx5_os_read_dev_counters(struct rte_eth_dev *dev, int pf, uint64_t *stats) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl; unsigned int i; struct ifreq ifr; unsigned int max_stats_n = RTE_MAX(xstats_ctrl->stats_n, xstats_ctrl->stats_n_2nd); unsigned int stats_sz = max_stats_n * sizeof(uint64_t); unsigned char et_stat_buf[sizeof(struct ethtool_stats) + stats_sz]; struct ethtool_stats *et_stats = (struct ethtool_stats *)et_stat_buf; int ret; uint16_t i_idx, o_idx; uint32_t total_stats = xstats_n; et_stats->cmd = ETHTOOL_GSTATS; /* Pass the maximum value, the driver may ignore this. */ et_stats->n_stats = max_stats_n; ifr.ifr_data = (caddr_t)et_stats; if (pf >= 0) ret = mlx5_ifreq_by_ifname(priv->sh->bond.ports[pf].ifname, SIOCETHTOOL, &ifr); else ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to read statistic values from device", dev->data->port_id); return ret; } if (pf <= 0) { for (i = 0; i != total_stats; i++) { i_idx = xstats_ctrl->dev_table_idx[i]; o_idx = xstats_ctrl->xstats_o_idx[i]; if (i_idx == UINT16_MAX || xstats_ctrl->info[o_idx].dev) continue; stats[o_idx] += (uint64_t)et_stats->data[i_idx]; } } else { for (i = 0; i != total_stats; i++) { i_idx = xstats_ctrl->dev_table_idx_2nd[i]; o_idx = xstats_ctrl->xstats_o_idx_2nd[i]; if (i_idx == UINT16_MAX || xstats_ctrl->info[o_idx].dev) continue; stats[o_idx] += (uint64_t)et_stats->data[i_idx]; } } return 0; } /* * Read device counters. * * @param dev * Pointer to Ethernet device. * @param bond_master * Indicate if the device is a bond master. * @param stats * Counters table output buffer. * * @return * 0 on success and stats is filled, negative errno value otherwise and * rte_errno is set. */ int mlx5_os_read_dev_counters(struct rte_eth_dev *dev, bool bond_master, uint64_t *stats) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl; int ret = 0, i; memset(stats, 0, sizeof(*stats) * xstats_ctrl->mlx5_stats_n); /* Read ifreq counters. */ if (bond_master) { /* Sum xstats from bonding device member ports. */ for (i = 0; i < MLX5_BOND_MAX_PORTS; i++) { if (!strlen(priv->sh->bond.ports[i].ifname)) continue; ret = _mlx5_os_read_dev_counters(dev, i, stats); if (ret) return ret; } } else { ret = _mlx5_os_read_dev_counters(dev, -1, stats); if (ret) return ret; } /* * Read IB dev counters. * The counters are unique per IB device but not per netdev IF. * In bonding mode, getting the stats name only from 1 port is enough. */ for (i = xstats_ctrl->dev_cnt_start; i < xstats_ctrl->mlx5_stats_n; i++) { if (!xstats_ctrl->info[i].dev) continue; /* return last xstats counter if fail to read. */ if (mlx5_os_read_dev_stat(priv, xstats_ctrl->info[i].ctr_name, &stats[i]) == 0) xstats_ctrl->xstats[i] = stats[i]; else stats[i] = xstats_ctrl->xstats[i]; } return ret; } /* * Query the number of statistics provided by ETHTOOL. * * @param dev * Pointer to Ethernet device. * @param bond_master * Indicate if the device is a bond master. * @param n_stats * Pointer to number of stats to store. * @param n_stats_sec * Pointer to number of stats to store for the 2nd port of the bond. * * @return * 0 on success, negative errno value otherwise and rte_errno is set. */ int mlx5_os_get_stats_n(struct rte_eth_dev *dev, bool bond_master, uint16_t *n_stats, uint16_t *n_stats_sec) { struct mlx5_priv *priv = dev->data->dev_private; struct ethtool_drvinfo drvinfo; struct ifreq ifr; int ret, i, j; uint16_t *target; drvinfo.cmd = ETHTOOL_GDRVINFO; ifr.ifr_data = (caddr_t)&drvinfo; /* Bonding PFs. */ if (bond_master) { for (i = 0, j = 0; i < MLX5_BOND_MAX_PORTS; i++) { if (!strlen(priv->sh->bond.ports[i].ifname)) continue; ret = mlx5_ifreq_by_ifname(priv->sh->bond.ports[i].ifname, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "bonding port %u unable to query number of statistics for the %d lag member, %d", PORT_ID(priv), j, ret); return ret; } target = !j++ ? n_stats : n_stats_sec; *target = drvinfo.n_stats; } } else { ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to query number of statistics", PORT_ID(priv)); return ret; } *n_stats = drvinfo.n_stats; } return 0; } static const struct mlx5_counter_ctrl mlx5_counters_init[] = { { .dpdk_name = "rx_unicast_bytes", .ctr_name = "rx_vport_unicast_bytes", }, { .dpdk_name = "rx_multicast_bytes", .ctr_name = "rx_vport_multicast_bytes", }, { .dpdk_name = "rx_broadcast_bytes", .ctr_name = "rx_vport_broadcast_bytes", }, { .dpdk_name = "rx_unicast_packets", .ctr_name = "rx_vport_unicast_packets", }, { .dpdk_name = "rx_multicast_packets", .ctr_name = "rx_vport_multicast_packets", }, { .dpdk_name = "rx_broadcast_packets", .ctr_name = "rx_vport_broadcast_packets", }, { .dpdk_name = "tx_unicast_bytes", .ctr_name = "tx_vport_unicast_bytes", }, { .dpdk_name = "tx_multicast_bytes", .ctr_name = "tx_vport_multicast_bytes", }, { .dpdk_name = "tx_broadcast_bytes", .ctr_name = "tx_vport_broadcast_bytes", }, { .dpdk_name = "tx_unicast_packets", .ctr_name = "tx_vport_unicast_packets", }, { .dpdk_name = "tx_multicast_packets", .ctr_name = "tx_vport_multicast_packets", }, { .dpdk_name = "tx_broadcast_packets", .ctr_name = "tx_vport_broadcast_packets", }, { .dpdk_name = "rx_wqe_errors", .ctr_name = "rx_wqe_err", }, { .dpdk_name = "rx_phy_crc_errors", .ctr_name = "rx_crc_errors_phy", }, { .dpdk_name = "rx_phy_in_range_len_errors", .ctr_name = "rx_in_range_len_errors_phy", }, { .dpdk_name = "rx_phy_symbol_errors", .ctr_name = "rx_symbol_err_phy", }, { .dpdk_name = "tx_phy_errors", .ctr_name = "tx_errors_phy", }, { .dpdk_name = "rx_out_of_buffer", .ctr_name = "out_of_buffer", .dev = 1, }, { .dpdk_name = "hairpin_out_of_buffer", .ctr_name = "hairpin_out_of_buffer", .dev = 1, .ctrl = { .enable = mlx5_enable_port_level_hairpin_counter, .disable = mlx5_disable_port_level_hairpin_counter, .enabled = 0, } }, { .dpdk_name = "dev_internal_queue_oob", .ctr_name = "dev_internal_queue_oob", }, { .dpdk_name = "tx_phy_packets", .ctr_name = "tx_packets_phy", }, { .dpdk_name = "rx_phy_packets", .ctr_name = "rx_packets_phy", }, { .dpdk_name = "tx_phy_discard_packets", .ctr_name = "tx_discards_phy", }, { .dpdk_name = "rx_phy_discard_packets", .ctr_name = "rx_discards_phy", }, { .dpdk_name = "rx_prio0_buf_discard_packets", .ctr_name = "rx_prio0_buf_discard", }, { .dpdk_name = "rx_prio1_buf_discard_packets", .ctr_name = "rx_prio1_buf_discard", }, { .dpdk_name = "rx_prio2_buf_discard_packets", .ctr_name = "rx_prio2_buf_discard", }, { .dpdk_name = "rx_prio3_buf_discard_packets", .ctr_name = "rx_prio3_buf_discard", }, { .dpdk_name = "rx_prio4_buf_discard_packets", .ctr_name = "rx_prio4_buf_discard", }, { .dpdk_name = "rx_prio5_buf_discard_packets", .ctr_name = "rx_prio5_buf_discard", }, { .dpdk_name = "rx_prio6_buf_discard_packets", .ctr_name = "rx_prio6_buf_discard", }, { .dpdk_name = "rx_prio7_buf_discard_packets", .ctr_name = "rx_prio7_buf_discard", }, { .dpdk_name = "rx_prio0_cong_discard_packets", .ctr_name = "rx_prio0_cong_discard", }, { .dpdk_name = "rx_prio1_cong_discard_packets", .ctr_name = "rx_prio1_cong_discard", }, { .dpdk_name = "rx_prio2_cong_discard_packets", .ctr_name = "rx_prio2_cong_discard", }, { .dpdk_name = "rx_prio3_cong_discard_packets", .ctr_name = "rx_prio3_cong_discard", }, { .dpdk_name = "rx_prio4_cong_discard_packets", .ctr_name = "rx_prio4_cong_discard", }, { .dpdk_name = "rx_prio5_cong_discard_packets", .ctr_name = "rx_prio5_cong_discard", }, { .dpdk_name = "rx_prio6_cong_discard_packets", .ctr_name = "rx_prio6_cong_discard", }, { .dpdk_name = "rx_prio7_cong_discard_packets", .ctr_name = "rx_prio7_cong_discard", }, { .dpdk_name = "tx_phy_bytes", .ctr_name = "tx_bytes_phy", }, { .dpdk_name = "rx_phy_bytes", .ctr_name = "rx_bytes_phy", }, /* Representor only */ { .dpdk_name = "rx_vport_packets", .ctr_name = "vport_rx_packets", }, { .dpdk_name = "rx_vport_bytes", .ctr_name = "vport_rx_bytes", }, { .dpdk_name = "tx_vport_packets", .ctr_name = "vport_tx_packets", }, { .dpdk_name = "tx_vport_bytes", .ctr_name = "vport_tx_bytes", }, /** * Device counters: These counters are for the * entire PCI device (NIC). These counters are * not counting on a per port/queue basis. */ { .dpdk_name = "rx_pci_signal_integrity", .ctr_name = "rx_pci_signal_integrity", }, { .dpdk_name = "tx_pci_signal_integrity", .ctr_name = "tx_pci_signal_integrity", }, { .dpdk_name = "outbound_pci_buffer_overflow", .ctr_name = "outbound_pci_buffer_overflow", }, { .dpdk_name = "outbound_pci_stalled_rd", .ctr_name = "outbound_pci_stalled_rd", }, { .dpdk_name = "outbound_pci_stalled_wr", .ctr_name = "outbound_pci_stalled_wr", }, { .dpdk_name = "outbound_pci_stalled_rd_events", .ctr_name = "outbound_pci_stalled_rd_events", }, { .dpdk_name = "outbound_pci_stalled_wr_events", .ctr_name = "outbound_pci_stalled_wr_events", }, { .dpdk_name = "dev_out_of_buffer", .ctr_name = "dev_out_of_buffer", }, }; const unsigned int xstats_n = RTE_DIM(mlx5_counters_init); static int mlx5_os_get_stats_strings(struct rte_eth_dev *dev, bool bond_master, struct ethtool_gstrings *strings, uint32_t stats_n, uint32_t stats_n_2nd) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl; struct ifreq ifr; int ret; uint32_t dev_idx, i, j, idx; /* Ensure no out of bounds access before. */ MLX5_ASSERT(xstats_n <= MLX5_MAX_XSTATS); strings->cmd = ETHTOOL_GSTRINGS; strings->string_set = ETH_SS_STATS; strings->len = stats_n; ifr.ifr_data = (caddr_t)strings; for (dev_idx = 0; dev_idx < MLX5_BOND_MAX_PORTS; dev_idx++) if (strlen(priv->sh->bond.ports[dev_idx].ifname)) break; if (bond_master && dev_idx >= MLX5_BOND_MAX_PORTS) { DRV_LOG(WARNING, "port %u unable to get the primary lag member", PORT_ID(priv)); return -ENODEV; } if (bond_master) ret = mlx5_ifreq_by_ifname(priv->sh->bond.ports[dev_idx].ifname, SIOCETHTOOL, &ifr); else ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to get statistic names with %d", PORT_ID(priv), ret); return ret; } /* Reorganize the orders to reduce the iterations. */ for (j = 0; j < xstats_n; j++) { xstats_ctrl->dev_table_idx[j] = UINT16_MAX; for (i = 0; i < stats_n; i++) { const char *curr_string = (const char *)&strings->data[i * ETH_GSTRING_LEN]; if (!strcmp(mlx5_counters_init[j].ctr_name, curr_string)) { idx = xstats_ctrl->mlx5_stats_n++; xstats_ctrl->dev_table_idx[j] = i; xstats_ctrl->xstats_o_idx[j] = idx; xstats_ctrl->info[idx] = mlx5_counters_init[j]; } } } if (!bond_master) { /* Add dev counters, unique per IB device. */ xstats_ctrl->dev_cnt_start = xstats_ctrl->mlx5_stats_n; for (j = 0; j != xstats_n; j++) { if (mlx5_counters_init[j].dev) { idx = xstats_ctrl->mlx5_stats_n++; xstats_ctrl->info[idx] = mlx5_counters_init[j]; xstats_ctrl->hw_stats[idx] = 0; } } return 0; } for (++dev_idx; dev_idx < MLX5_BOND_MAX_PORTS; dev_idx++) if (strlen(priv->sh->bond.ports[dev_idx].ifname)) break; if (dev_idx >= MLX5_BOND_MAX_PORTS) { DRV_LOG(WARNING, "port %u unable to get the secondary lag member", PORT_ID(priv)); return -ENODEV; } strings->len = stats_n_2nd; ret = mlx5_ifreq_by_ifname(priv->sh->bond.ports[dev_idx].ifname, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to get statistic names for 2nd slave with %d", PORT_ID(priv), ret); return ret; } /* The 2nd slave port may have a different strings set, based on the configuration. */ for (j = 0; j != xstats_n; j++) { xstats_ctrl->dev_table_idx_2nd[j] = UINT16_MAX; for (i = 0; i != stats_n_2nd; i++) { const char *curr_string = (const char *)&strings->data[i * ETH_GSTRING_LEN]; if (!strcmp(mlx5_counters_init[j].ctr_name, curr_string)) { xstats_ctrl->dev_table_idx_2nd[j] = i; if (xstats_ctrl->dev_table_idx[j] != UINT16_MAX) { /* Already mapped in the 1st slave port. */ idx = xstats_ctrl->xstats_o_idx[j]; xstats_ctrl->xstats_o_idx_2nd[j] = idx; } else { /* Append the new items to the end of the map. */ idx = xstats_ctrl->mlx5_stats_n++; xstats_ctrl->xstats_o_idx_2nd[j] = idx; xstats_ctrl->info[idx] = mlx5_counters_init[j]; } } } } /* Dev counters are always at the last now. */ xstats_ctrl->dev_cnt_start = xstats_ctrl->mlx5_stats_n; for (j = 0; j != xstats_n; j++) { if (mlx5_counters_init[j].dev) { idx = xstats_ctrl->mlx5_stats_n++; xstats_ctrl->info[idx] = mlx5_counters_init[j]; xstats_ctrl->hw_stats[idx] = 0; } } return 0; } /** * Init the structures to read device counters. * * @param dev * Pointer to Ethernet device. */ void mlx5_os_stats_init(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl; struct mlx5_stats_ctrl *stats_ctrl = &priv->stats_ctrl; struct ethtool_gstrings *strings = NULL; uint16_t dev_stats_n = 0; uint16_t dev_stats_n_2nd = 0; unsigned int max_stats_n; unsigned int str_sz; int ret; bool bond_master = (priv->master && priv->pf_bond >= 0); /* So that it won't aggregate for each init. */ xstats_ctrl->mlx5_stats_n = 0; ret = mlx5_os_get_stats_n(dev, bond_master, &dev_stats_n, &dev_stats_n_2nd); if (ret < 0) { DRV_LOG(WARNING, "port %u no extended statistics available", dev->data->port_id); return; } max_stats_n = RTE_MAX(dev_stats_n, dev_stats_n_2nd); /* Allocate memory to grab stat names and values. */ str_sz = max_stats_n * ETH_GSTRING_LEN; strings = (struct ethtool_gstrings *) mlx5_malloc(0, str_sz + sizeof(struct ethtool_gstrings), 0, SOCKET_ID_ANY); if (!strings) { DRV_LOG(WARNING, "port %u unable to allocate memory for xstats", dev->data->port_id); return; } ret = mlx5_os_get_stats_strings(dev, bond_master, strings, dev_stats_n, dev_stats_n_2nd); if (ret < 0) { DRV_LOG(WARNING, "port %u failed to get the stats strings", dev->data->port_id); goto free; } xstats_ctrl->stats_n = dev_stats_n; xstats_ctrl->stats_n_2nd = dev_stats_n_2nd; /* Copy to base at first time. */ ret = mlx5_os_read_dev_counters(dev, bond_master, xstats_ctrl->base); if (ret) DRV_LOG(ERR, "port %u cannot read device counters: %s", dev->data->port_id, strerror(rte_errno)); mlx5_os_read_dev_stat(priv, "out_of_buffer", &stats_ctrl->imissed_base); stats_ctrl->imissed = 0; free: mlx5_free(strings); } /** * Get MAC address by querying netdevice. * * @param[in] dev * Pointer to Ethernet device. * @param[out] mac * MAC address output buffer. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_get_mac(struct rte_eth_dev *dev, uint8_t (*mac)[RTE_ETHER_ADDR_LEN]) { struct ifreq request; int ret; ret = mlx5_ifreq(dev, SIOCGIFHWADDR, &request); if (ret) return ret; memcpy(mac, request.ifr_hwaddr.sa_data, RTE_ETHER_ADDR_LEN); return 0; } /* * Query dropless_rq private flag value provided by ETHTOOL. * * @param dev * Pointer to Ethernet device. * * @return * - 0 on success, flag is not set. * - 1 on success, flag is set. * - negative errno value otherwise and rte_errno is set. */ int mlx5_get_flag_dropless_rq(struct rte_eth_dev *dev) { struct ethtool_sset_info *sset_info = NULL; struct ethtool_drvinfo drvinfo; struct ifreq ifr; struct ethtool_gstrings *strings = NULL; struct ethtool_value flags; const int32_t flag_len = sizeof(flags.data) * CHAR_BIT; int32_t str_sz; int32_t len; int32_t i; int ret; sset_info = mlx5_malloc(0, sizeof(struct ethtool_sset_info) + sizeof(uint32_t), 0, SOCKET_ID_ANY); if (sset_info == NULL) { rte_errno = ENOMEM; return -rte_errno; } sset_info->cmd = ETHTOOL_GSSET_INFO; sset_info->reserved = 0; sset_info->sset_mask = 1ULL << ETH_SS_PRIV_FLAGS; ifr.ifr_data = (caddr_t)&sset_info; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (!ret) { const uint32_t *sset_lengths = sset_info->data; len = sset_info->sset_mask ? sset_lengths[0] : 0; } else if (ret == -EOPNOTSUPP) { drvinfo.cmd = ETHTOOL_GDRVINFO; ifr.ifr_data = (caddr_t)&drvinfo; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u cannot get the driver info", dev->data->port_id); goto exit; } len = *(uint32_t *)((char *)&drvinfo + offsetof(struct ethtool_drvinfo, n_priv_flags)); } else { DRV_LOG(WARNING, "port %u cannot get the sset info", dev->data->port_id); goto exit; } if (!len) { DRV_LOG(WARNING, "port %u does not have private flag", dev->data->port_id); rte_errno = EOPNOTSUPP; ret = -rte_errno; goto exit; } else if (len > flag_len) { DRV_LOG(WARNING, "port %u maximal private flags number is %d", dev->data->port_id, flag_len); len = flag_len; } str_sz = ETH_GSTRING_LEN * len; strings = (struct ethtool_gstrings *) mlx5_malloc(0, str_sz + sizeof(struct ethtool_gstrings), 0, SOCKET_ID_ANY); if (!strings) { DRV_LOG(WARNING, "port %u unable to allocate memory for" " private flags", dev->data->port_id); rte_errno = ENOMEM; ret = -rte_errno; goto exit; } strings->cmd = ETHTOOL_GSTRINGS; strings->string_set = ETH_SS_PRIV_FLAGS; strings->len = len; ifr.ifr_data = (caddr_t)strings; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to get private flags strings", dev->data->port_id); goto exit; } for (i = 0; i < len; i++) { strings->data[(i + 1) * ETH_GSTRING_LEN - 1] = 0; if (!strcmp((const char *)strings->data + i * ETH_GSTRING_LEN, "dropless_rq")) break; } if (i == len) { DRV_LOG(WARNING, "port %u does not support dropless_rq", dev->data->port_id); rte_errno = EOPNOTSUPP; ret = -rte_errno; goto exit; } flags.cmd = ETHTOOL_GPFLAGS; ifr.ifr_data = (caddr_t)&flags; ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); if (ret) { DRV_LOG(WARNING, "port %u unable to get private flags status", dev->data->port_id); goto exit; } ret = !!(flags.data & (1U << i)); exit: mlx5_free(strings); mlx5_free(sset_info); return ret; } /** * Unmaps HCA PCI BAR from the current process address space. * * @param dev * Pointer to Ethernet device structure. */ void mlx5_txpp_unmap_hca_bar(struct rte_eth_dev *dev) { struct mlx5_proc_priv *ppriv = dev->process_private; if (ppriv && ppriv->hca_bar) { rte_mem_unmap(ppriv->hca_bar, MLX5_ST_SZ_BYTES(initial_seg)); ppriv->hca_bar = NULL; } } /** * Maps HCA PCI BAR to the current process address space. * Stores pointer in the process private structure allowing * to read internal and real time counter directly from the HW. * * @param dev * Pointer to Ethernet device structure. * * @return * 0 on success and not NULL pointer to mapped area in process structure. * negative otherwise and NULL pointer */ int mlx5_txpp_map_hca_bar(struct rte_eth_dev *dev) { struct mlx5_proc_priv *ppriv = dev->process_private; char pci_addr[PCI_PRI_STR_SIZE] = { 0 }; void *base, *expected = NULL; int fd, ret; if (!ppriv) { rte_errno = ENOMEM; return -rte_errno; } if (ppriv->hca_bar) return 0; ret = mlx5_dev_to_pci_str(dev->device, pci_addr, sizeof(pci_addr)); if (ret < 0) return -rte_errno; /* Open PCI device resource 0 - HCA initialize segment */ MKSTR(name, "/sys/bus/pci/devices/%s/resource0", pci_addr); fd = open(name, O_RDWR | O_SYNC); if (fd == -1) { rte_errno = ENOTSUP; return -ENOTSUP; } base = rte_mem_map(NULL, MLX5_ST_SZ_BYTES(initial_seg), RTE_PROT_READ, RTE_MAP_SHARED, fd, 0); close(fd); if (!base) { rte_errno = ENOTSUP; return -ENOTSUP; } /* Check there is no concurrent mapping in other thread. */ if (!rte_atomic_compare_exchange_strong_explicit(&ppriv->hca_bar, &expected, base, rte_memory_order_relaxed, rte_memory_order_relaxed)) rte_mem_unmap(base, MLX5_ST_SZ_BYTES(initial_seg)); return 0; }