X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_ethdev.c;h=738d540f5a49c920d1a85977285962bcfdb3051e;hb=a6bd4911ad93f8ab8a378591b3a86f82223695eb;hp=7b1b7aa0e67b0c218bcac60364be43aba85c5e19;hpb=dbccb4cddcd2f7cff7d6ddcf11f5aeedc6245ab3;p=dpdk.git diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 7b1b7aa0e6..738d540f5a 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -1,41 +1,13 @@ -/*- - * BSD LICENSE - * - * Copyright 2015 6WIND S.A. - * Copyright 2015 Mellanox. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of 6WIND S.A. nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2015 6WIND S.A. + * Copyright 2015 Mellanox Technologies, Ltd */ -#define _GNU_SOURCE - #include #include +#include #include +#include #include #include #include @@ -45,28 +17,56 @@ #include #include #include -#include #include #include #include -#include #include #include #include +#include #include -#include +#include #include #include #include #include -#include #include +#include +#include +#include #include "mlx5.h" +#include "mlx5_glue.h" #include "mlx5_rxtx.h" #include "mlx5_utils.h" +/* 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 { @@ -119,18 +119,18 @@ struct ethtool_link_settings { #endif /** - * Get interface name from private structure. + * Get master interface name from private structure. * - * @param[in] priv - * Pointer to private structure. + * @param[in] dev + * Pointer to Ethernet device. * @param[out] ifname * Interface name output buffer. * * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) +mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE]) { DIR *dir; struct dirent *dent; @@ -138,12 +138,15 @@ priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) unsigned int dev_port_prev = ~0u; char match[IF_NAMESIZE] = ""; + assert(ibdev_path); { - MKSTR(path, "%s/device/net", priv->ibdev_path); + MKSTR(path, "%s/device/net", ibdev_path); dir = opendir(path); - if (dir == NULL) - return -1; + if (dir == NULL) { + rte_errno = errno; + return -rte_errno; + } } while ((dent = readdir(dir)) != NULL) { char *name = dent->d_name; @@ -157,7 +160,7 @@ priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) continue; MKSTR(path, "%s/device/net/%s/%s", - priv->ibdev_path, name, + ibdev_path, name, (dev_type ? "dev_id" : "dev_port")); file = fopen(path, "rb"); @@ -189,361 +192,288 @@ try_dev_id: if (dev_port == dev_port_prev) goto try_dev_id; dev_port_prev = dev_port; - if (dev_port == (priv->port - 1u)) - snprintf(match, sizeof(match), "%s", name); + if (dev_port == 0) + strlcpy(match, name, sizeof(match)); } closedir(dir); - if (match[0] == '\0') - return -1; + if (match[0] == '\0') { + rte_errno = ENOENT; + return -rte_errno; + } strncpy(*ifname, match, sizeof(*ifname)); return 0; } /** - * Check if the counter is located on ib counters file. + * Get interface name from private structure. * - * @param[in] cntr - * Counter name. + * 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 - * 1 if counter is located on ib counters file , 0 otherwise. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -priv_is_ib_cntr(const char *cntr) +mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE]) { - if (!strcmp(cntr, "out_of_buffer")) - return 1; - return 0; + struct mlx5_priv *priv = dev->data->dev_private; + unsigned int ifindex; + + assert(priv); + assert(priv->sh); + ifindex = priv->nl_socket_rdma >= 0 ? + mlx5_nl_ifindex(priv->nl_socket_rdma, + priv->sh->ibdev_name, + priv->ibv_port) : 0; + 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; } /** - * Read from sysfs entry. + * Get interface name for the specified device, uses the extra base + * device resources to perform Netlink requests. + * + * This is a port representor-aware version of mlx5_get_master_ifname(). * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[out] buf - * Data output buffer. - * @param size - * Buffer size. + * @param[in] base + * Pointer to Ethernet device to use Netlink socket from + * to perfrom requests. + * @param[in] dev + * Pointer to Ethernet device. + * @param[out] ifname + * Interface name output buffer. * * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ -static int -priv_sysfs_read(const struct priv *priv, const char *entry, - char *buf, size_t size) +int +mlx5_get_ifname_base(const struct rte_eth_dev *base, + const struct rte_eth_dev *dev, + char (*ifname)[IF_NAMESIZE]) { - char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - int err; - - if (priv_get_ifname(priv, &ifname)) - return -1; - - if (priv_is_ib_cntr(entry)) { - MKSTR(path, "%s/ports/1/hw_counters/%s", - priv->ibdev_path, entry); - file = fopen(path, "rb"); - } else { - MKSTR(path, "%s/device/net/%s/%s", - priv->ibdev_path, ifname, entry); - file = fopen(path, "rb"); + struct mlx5_priv *priv = dev->data->dev_private; + struct mlx5_priv *priv_base = base->data->dev_private; + unsigned int ifindex; + + assert(priv); + assert(priv->sh); + assert(priv_base); + ifindex = priv_base->nl_socket_rdma >= 0 ? + mlx5_nl_ifindex(priv_base->nl_socket_rdma, + priv->sh->ibdev_name, + priv->ibv_port) : 0; + if (!ifindex) { + if (!priv->representor) + return mlx5_get_master_ifname(priv->sh->ibdev_path, + ifname); + rte_errno = ENXIO; + return -rte_errno; } - if (file == NULL) - return -1; - ret = fread(buf, 1, size, file); - err = errno; - if (((size_t)ret < size) && (ferror(file))) - ret = -1; - else - ret = size; - fclose(file); - errno = err; - return ret; + if (if_indextoname(ifindex, &(*ifname)[0])) + return 0; + rte_errno = errno; + return -rte_errno; } - /** - * Write to sysfs entry. + * Get the interface index from device name. * - * @param[in] priv - * Pointer to private structure. - * @param[in] entry - * Entry name relative to sysfs path. - * @param[in] buf - * Data buffer. - * @param size - * Buffer size. + * @param[in] dev + * Pointer to Ethernet device. * * @return - * 0 on success, -1 on failure and errno is set. + * Nonzero interface index on success, zero otherwise and rte_errno is set. */ -static int -priv_sysfs_write(const struct priv *priv, const char *entry, - char *buf, size_t size) +unsigned int +mlx5_ifindex(const struct rte_eth_dev *dev) { char ifname[IF_NAMESIZE]; - FILE *file; - int ret; - int err; - - if (priv_get_ifname(priv, &ifname)) - return -1; + unsigned int ifindex; - MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry); - - file = fopen(path, "wb"); - if (file == NULL) - return -1; - ret = fwrite(buf, 1, size, file); - err = errno; - if (((size_t)ret < size) || (ferror(file))) - ret = -1; - else - ret = size; - fclose(file); - errno = err; - return ret; + if (mlx5_get_ifname(dev, &ifname)) + return 0; + ifindex = if_nametoindex(ifname); + if (!ifindex) + rte_errno = errno; + return ifindex; } /** - * Get unsigned long sysfs property. + * Perform ifreq ioctl() on associated Ethernet device. * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param[out] value - * Value output buffer. + * @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, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ -static int -priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) +int +mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr) { - int ret; - unsigned long value_ret; - char value_str[32]; + int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); + int ret = 0; - ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); - if (ret == -1) { - DEBUG("cannot read %s value from sysfs: %s", - name, strerror(errno)); - return -1; - } - value_str[ret] = '\0'; - errno = 0; - value_ret = strtoul(value_str, NULL, 0); - if (errno) { - DEBUG("invalid %s value `%s': %s", name, value_str, - strerror(errno)); - return -1; + if (sock == -1) { + rte_errno = errno; + return -rte_errno; } - *value = value_ret; - return 0; -} - -/** - * Set unsigned long sysfs property. - * - * @param priv - * Pointer to private structure. - * @param[in] name - * Entry name relative to sysfs path. - * @param value - * Value to set. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -static int -priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) -{ - int ret; - MKSTR(value_str, "%lu", value); - - ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); + ret = mlx5_get_ifname(dev, &ifr->ifr_name); + if (ret) + goto error; + ret = ioctl(sock, req, ifr); if (ret == -1) { - DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", - name, value_str, value, strerror(errno)); - return -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] priv - * Pointer to private structure. + * Perform ifreq ioctl() on specified Ethernet device, + * ifindex, name and other attributes are requested + * on the base device to avoid specified device Netlink + * socket sharing (this is not thread-safe). + * + * @param[in] base + * Pointer to Ethernet device to get dev attributes. + * @param[in] dev + * Pointer to Ethernet device to perform ioctl. * @param req * Request number to pass to ioctl(). * @param[out] ifr * Interface request structure output buffer. * * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) +mlx5_ifreq_base(const struct rte_eth_dev *base, + const struct rte_eth_dev *dev, + int req, struct ifreq *ifr) { int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); - int ret = -1; + int ret = 0; - if (sock == -1) - return ret; - if (priv_get_ifname(priv, &ifr->ifr_name) == 0) - ret = ioctl(sock, req, ifr); + if (sock == -1) { + rte_errno = errno; + return -rte_errno; + } + ret = mlx5_get_ifname_base(base, dev, &ifr->ifr_name); + if (ret) + goto error; + ret = ioctl(sock, req, ifr); + if (ret == -1) { + rte_errno = errno; + goto error; + } close(sock); - return ret; -} - -/** - * Return the number of active VFs for the current device. - * - * @param[in] priv - * Pointer to private structure. - * @param[out] num_vfs - * Number of active VFs. - * - * @return - * 0 on success, -1 on failure and errno is set. - */ -int -priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) -{ - /* The sysfs entry name depends on the operating system. */ - const char **name = (const char *[]){ - "device/sriov_numvfs", - "device/mlx5_num_vfs", - NULL, - }; - int ret; - - do { - unsigned long ulong_num_vfs; - - ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs); - if (!ret) - *num_vfs = ulong_num_vfs; - } while (*(++name) && ret); - return ret; + return 0; +error: + close(sock); + return -rte_errno; } /** * Get device MTU. * - * @param priv - * Pointer to private structure. + * @param dev + * Pointer to Ethernet device. * @param[out] mtu * MTU value output buffer. * * @return - * 0 on success, -1 on failure and errno is set. - */ -int -priv_get_mtu(struct priv *priv, uint16_t *mtu) -{ - unsigned long ulong_mtu; - - if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1) - return -1; - *mtu = ulong_mtu; - return 0; -} - -/** - * Read device counter from sysfs. - * - * @param priv - * Pointer to private structure. - * @param name - * Counter name. - * @param[out] cntr - * Counter output buffer. - * - * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) +mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu) { - unsigned long ulong_ctr; + struct ifreq request; + int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request); - if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1) - return -1; - *cntr = ulong_ctr; + if (ret) + return ret; + *mtu = request.ifr_mtu; return 0; } /** * Set device MTU. * - * @param priv - * Pointer to private structure. + * @param dev + * Pointer to Ethernet device. * @param mtu * MTU value to set. * * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int -priv_set_mtu(struct priv *priv, uint16_t mtu) +mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) { - uint16_t new_mtu; + struct ifreq request = { .ifr_mtu = mtu, }; - if (priv_set_sysfs_ulong(priv, "mtu", mtu) || - priv_get_mtu(priv, &new_mtu)) - return -1; - if (new_mtu == mtu) - return 0; - errno = EINVAL; - return -1; + return mlx5_ifreq(dev, SIOCSIFMTU, &request); } /** * Set device flags. * - * @param priv - * Pointer to private structure. + * @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, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) +mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags) { - unsigned long tmp; + struct ifreq request; + int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request); - if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1) - return -1; - tmp &= keep; - tmp |= (flags & (~keep)); - return priv_set_sysfs_ulong(priv, "flags", tmp); + if (ret) + return ret; + request.ifr_flags &= keep; + request.ifr_flags |= flags & ~keep; + return mlx5_ifreq(dev, SIOCSIFFLAGS, &request); } /** - * Ethernet device configuration. - * - * Prepare the driver for a given number of TX and RX queues. + * DPDK callback for Ethernet device configuration. * * @param dev * Pointer to Ethernet device structure. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ -static int -dev_configure(struct rte_eth_dev *dev) +int +mlx5_dev_configure(struct rte_eth_dev *dev) { - struct priv *priv = dev->data->dev_private; + 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; unsigned int i; @@ -551,90 +481,114 @@ dev_configure(struct rte_eth_dev *dev) unsigned int reta_idx_n; const uint8_t use_app_rss_key = !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; - uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv); - uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; - - if ((tx_offloads & supp_tx_offloads) != tx_offloads) { - ERROR("Some Tx offloads are not supported " - "requested 0x%" PRIx64 " supported 0x%" PRIx64, - tx_offloads, supp_tx_offloads); - return ENOTSUP; - } + int ret = 0; + if (use_app_rss_key && (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != - rss_hash_default_key_len)) { - /* MLX5 RSS only support 40bytes key. */ - return EINVAL; + 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, - rss_hash_default_key_len, 0); + MLX5_RSS_HASH_KEY_LEN, 0); if (!priv->rss_conf.rss_key) { - ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); - return ENOMEM; + DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)", + dev->data->port_id, rxqs_n); + rte_errno = ENOMEM; + return -rte_errno; } memcpy(priv->rss_conf.rss_key, use_app_rss_key ? dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : rss_hash_default_key, - rss_hash_default_key_len); - priv->rss_conf.rss_key_len = rss_hash_default_key_len; + 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) { - INFO("%p: TX queues number update: %u -> %u", - (void *)dev, priv->txqs_n, 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) { - ERROR("cannot handle this many RX queues (%u)", rxqs_n); - return EINVAL; + DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", + dev->data->port_id, rxqs_n); + rte_errno = EINVAL; + return -rte_errno; } - if (rxqs_n == priv->rxqs_n) - return 0; - INFO("%p: RX queues number update: %u -> %u", - (void *)dev, priv->rxqs_n, rxqs_n); - priv->rxqs_n = rxqs_n; - /* If the requested number of RX queues is not a power of two, use the - * maximum indirection table size for better balancing. - * The result is always rounded to the next power of two. */ - reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? - priv->config.ind_table_max_size : - rxqs_n)); - if (priv_rss_reta_index_resize(priv, reta_idx_n)) - return ENOMEM; - /* When the number of RX queues is not a power of two, the remaining - * table entries are padded with reused WQs and hashes are not spread - * uniformly. */ - for (i = 0, j = 0; (i != reta_idx_n); ++i) { - (*priv->reta_idx)[i] = j; - if (++j == rxqs_n) - j = 0; + 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; + /* + * If the requested number of RX queues is not a power of two, + * use the maximum indirection table size for better balancing. + * The result is always rounded to the next power of two. + */ + reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? + priv->config.ind_table_max_size : + rxqs_n)); + ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); + if (ret) + return ret; + /* + * When the number of RX queues is not a power of two, + * the remaining table entries are padded with reused WQs + * and hashes are not spread uniformly. + */ + for (i = 0, j = 0; (i != reta_idx_n); ++i) { + (*priv->reta_idx)[i] = j; + if (++j == rxqs_n) + j = 0; + } } + ret = mlx5_proc_priv_init(dev); + if (ret) + return ret; return 0; } /** - * DPDK callback for Ethernet device configuration. + * Sets default tuning parameters. * * @param dev - * Pointer to Ethernet device structure. - * - * @return - * 0 on success, negative errno value on failure. + * Pointer to Ethernet device. + * @param[out] info + * Info structure output buffer. */ -int -mlx5_dev_configure(struct rte_eth_dev *dev) +static void +mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { - struct priv *priv = dev->data->dev_private; - int ret; - - priv_lock(priv); - ret = dev_configure(dev); - assert(ret >= 0); - priv_unlock(priv); - return -ret; + 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 = 64; + info->default_txportconf.burst_size = 64; + if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { + info->default_rxportconf.nb_queues = 16; + info->default_txportconf.nb_queues = 16; + if (dev->data->nb_rx_queues > 2 || + dev->data->nb_tx_queues > 2) { + /* Max Throughput. */ + info->default_rxportconf.ring_size = 2048; + info->default_txportconf.ring_size = 2048; + } + } else { + info->default_rxportconf.nb_queues = 8; + info->default_txportconf.nb_queues = 8; + if (dev->data->nb_rx_queues > 2 || + dev->data->nb_tx_queues > 2) { + /* Max Throughput. */ + info->default_rxportconf.ring_size = 4096; + info->default_txportconf.ring_size = 4096; + } + } } /** @@ -648,14 +602,11 @@ mlx5_dev_configure(struct rte_eth_dev *dev) void mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) { - struct priv *priv = dev->data->dev_private; + struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_dev_config *config = &priv->config; unsigned int max; char ifname[IF_NAMESIZE]; - info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); - - priv_lock(priv); /* FIXME: we should ask the device for these values. */ info->min_rx_bufsize = 32; info->max_rx_pktlen = 65536; @@ -663,33 +614,117 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) * Since we need one CQ per QP, the limit is the minimum number * between the two values. */ - max = RTE_MIN(priv->device_attr.orig_attr.max_cq, - priv->device_attr.orig_attr.max_qp); + max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, + priv->sh->device_attr.orig_attr.max_qp); /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ if (max >= 65535) max = 65535; info->max_rx_queues = max; info->max_tx_queues = max; - info->max_mac_addrs = RTE_DIM(priv->mac); - info->rx_offload_capa = - (config->hw_csum ? - (DEV_RX_OFFLOAD_IPV4_CKSUM | - DEV_RX_OFFLOAD_UDP_CKSUM | - DEV_RX_OFFLOAD_TCP_CKSUM) : - 0) | - (priv->config.hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) | - DEV_RX_OFFLOAD_TIMESTAMP; - - info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv); - if (priv_get_ifname(priv, &ifname) == 0) + info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; + info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); + info->rx_offload_capa = (mlx5_get_rx_port_offloads() | + info->rx_queue_offload_capa); + info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); + if (mlx5_get_ifname(dev, &ifname) == 0) info->if_index = if_nametoindex(ifname); info->reta_size = priv->reta_idx_n ? priv->reta_idx_n : config->ind_table_max_size; - info->hash_key_size = priv->rss_conf.rss_key_len; + info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; info->speed_capa = priv->link_speed_capa; - priv_unlock(priv); + info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; + mlx5_set_default_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) { + unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0); + uint16_t port_id[i]; + + i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i); + while (i--) { + struct mlx5_priv *opriv = + rte_eth_devices[port_id[i]].data->dev_private; + + if (!opriv || + opriv->representor || + 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; + } + } } +/** + * 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) { @@ -712,49 +747,121 @@ mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) }; 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; + assert(priv->representor); + RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) { + priv = rte_eth_devices[port_id].data->dev_private; + if (priv && + priv->master && + priv->domain_id == domain_id) + return &rte_eth_devices[port_id]; + } + return NULL; +} + /** * DPDK callback to retrieve physical link information. * * @param dev * Pointer to Ethernet device structure. - * @param wait_to_complete - * Wait for request completion (ignored). + * @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, int wait_to_complete) +mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, + struct rte_eth_link *link) { - struct priv *priv = dev->data->dev_private; + 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; - /* priv_lock() is not taken to allow concurrent calls. */ - - (void)wait_to_complete; - if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { - WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); - return -1; + ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); + if (ret) { + DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", + dev->data->port_id, strerror(rte_errno)); + return ret; } - memset(&dev_link, 0, sizeof(dev_link)); - dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && - (ifr.ifr_flags & IFF_RUNNING)); - ifr.ifr_data = (void *)&edata; - if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { - WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", - strerror(errno)); - return -1; + 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, + }; + /* + * Use special version of mlx5_ifreq() + * to get master device name with local + * device Netlink socket. Using master + * device Netlink socket is not thread + * safe. + */ + ret = mlx5_ifreq_base(dev, 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 = 0; + dev_link.link_speed = ETH_SPEED_NUM_NONE; else dev_link.link_speed = link_speed; priv->link_speed_capa = 0; @@ -774,13 +881,13 @@ mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & ETH_LINK_SPEED_FIXED); - if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { - /* Link status changed. */ - dev->data->dev_link = dev_link; - return 0; + if (((dev_link.link_speed && !dev_link.link_status) || + (!dev_link.link_speed && dev_link.link_status))) { + rte_errno = EAGAIN; + return -rte_errno; } - /* Link status is still the same. */ - return -1; + *link = dev_link; + return 0; } /** @@ -788,31 +895,72 @@ mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) * * @param dev * Pointer to Ethernet device structure. - * @param wait_to_complete - * Wait for request completion (ignored). + * @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, int wait_to_complete) +mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, + struct rte_eth_link *link) + { - struct priv *priv = dev->data->dev_private; + 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; - (void)wait_to_complete; - if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { - WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); - return -1; + ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); + if (ret) { + DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", + dev->data->port_id, strerror(rte_errno)); + return ret; } - memset(&dev_link, 0, sizeof(dev_link)); - dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && - (ifr.ifr_flags & IFF_RUNNING)); - ifr.ifr_data = (void *)&gcmd; - if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { - DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", - strerror(errno)); - return -1; + 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, + }; + /* + * Avoid using master Netlink socket. + * This is not thread-safe. + */ + ret = mlx5_ifreq_base(dev, 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; @@ -823,10 +971,13 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) *ecmd = gcmd; ifr.ifr_data = (void *)ecmd; - if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { - DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", - strerror(errno)); - return -1; + ret = mlx5_ifreq_base(dev, 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; sc = ecmd->link_mode_masks[0] | @@ -870,13 +1021,13 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & ETH_LINK_SPEED_FIXED); - if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { - /* Link status changed. */ - dev->data->dev_link = dev_link; - return 0; + if (((dev_link.link_speed && !dev_link.link_status) || + (!dev_link.link_speed && dev_link.link_status))) { + rte_errno = EAGAIN; + return -rte_errno; } - /* Link status is still the same. */ - return -1; + *link = dev_link; + return 0; } /** @@ -885,20 +1036,43 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) * @param dev * Pointer to Ethernet device structure. * @param wait_to_complete - * Wait for request completion (ignored). + * 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) { - struct utsname utsname; - int ver[3]; - - if (uname(&utsname) == -1 || - sscanf(utsname.release, "%d.%d.%d", - &ver[0], &ver[1], &ver[2]) != 3 || - KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) - return mlx5_link_update_unlocked_gset(dev, wait_to_complete); - return mlx5_link_update_unlocked_gs(dev, wait_to_complete); + int ret; + struct rte_eth_link dev_link; + time_t start_time = time(NULL); + + do { + ret = mlx5_link_update_unlocked_gs(dev, &dev_link); + if (ret == -ENOTSUP) + ret = mlx5_link_update_unlocked_gset(dev, &dev_link); + if (ret == 0) + break; + /* Handle wait to complete situation. */ + if (wait_to_complete && ret == -EAGAIN) { + if (abs((int)difftime(time(NULL), start_time)) < + MLX5_LINK_STATUS_TIMEOUT) { + usleep(0); + continue; + } else { + rte_errno = EBUSY; + return -rte_errno; + } + } else if (ret < 0) { + return ret; + } + } while (wait_to_complete); + ret = !!memcmp(&dev->data->dev_link, &dev_link, + sizeof(struct rte_eth_link)); + dev->data->dev_link = dev_link; + return ret; } /** @@ -910,39 +1084,33 @@ mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) * New MTU. * * @return - * 0 on success, negative errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) { - struct priv *priv = dev->data->dev_private; - uint16_t kern_mtu; - int ret = 0; + struct mlx5_priv *priv = dev->data->dev_private; + uint16_t kern_mtu = 0; + int ret; - priv_lock(priv); - ret = priv_get_mtu(priv, &kern_mtu); + ret = mlx5_get_mtu(dev, &kern_mtu); if (ret) - goto out; + return ret; /* Set kernel interface MTU first. */ - ret = priv_set_mtu(priv, mtu); + ret = mlx5_set_mtu(dev, mtu); if (ret) - goto out; - ret = priv_get_mtu(priv, &kern_mtu); + return ret; + ret = mlx5_get_mtu(dev, &kern_mtu); if (ret) - goto out; + return ret; if (kern_mtu == mtu) { priv->mtu = mtu; - DEBUG("adapter port %u MTU set to %u", priv->port, mtu); + DRV_LOG(DEBUG, "port %u adapter MTU set to %u", + dev->data->port_id, mtu); + return 0; } - priv_unlock(priv); - return 0; -out: - ret = errno; - WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, - strerror(ret)); - priv_unlock(priv); - assert(ret >= 0); - return -ret; + rte_errno = EAGAIN; + return -rte_errno; } /** @@ -954,12 +1122,11 @@ out: * Flow control output buffer. * * @return - * 0 on success, negative errno value on failure. + * 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 priv *priv = dev->data->dev_private; struct ifreq ifr; struct ethtool_pauseparam ethpause = { .cmd = ETHTOOL_GPAUSEPARAM @@ -967,15 +1134,14 @@ mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) int ret; ifr.ifr_data = (void *)ðpause; - priv_lock(priv); - if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { - ret = errno; - WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" - " failed: %s", - strerror(ret)); - goto out; + 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; @@ -985,12 +1151,7 @@ mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) fc_conf->mode = RTE_FC_TX_PAUSE; else fc_conf->mode = RTE_FC_NONE; - ret = 0; - -out: - priv_unlock(priv); - assert(ret >= 0); - return -ret; + return 0; } /** @@ -1002,12 +1163,11 @@ out: * Flow control parameters. * * @return - * 0 on success, negative errno value on failure. + * 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 priv *priv = dev->data->dev_private; struct ifreq ifr; struct ethtool_pauseparam ethpause = { .cmd = ETHTOOL_SPAUSEPARAM @@ -1027,21 +1187,15 @@ mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) ethpause.tx_pause = 1; else ethpause.tx_pause = 0; - - priv_lock(priv); - if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { - ret = errno; - WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" - " failed: %s", - strerror(ret)); - goto out; + 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; } - ret = 0; - -out: - priv_unlock(priv); - assert(ret >= 0); - return -ret; + return 0; } /** @@ -1053,7 +1207,7 @@ out: * PCI bus address output buffer. * * @return - * 0 on success, -1 on failure and errno is set. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, @@ -1064,8 +1218,10 @@ mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, MKSTR(path, "%s/device/uevent", device->ibdev_path); file = fopen(path, "rb"); - if (file == NULL) - return -1; + if (file == NULL) { + rte_errno = errno; + return -rte_errno; + } while (fgets(line, sizeof(line), file) == line) { size_t len = strlen(line); int ret; @@ -1095,354 +1251,750 @@ mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, } /** - * Update the link status. + * Handle asynchronous removal event for entire multiport device. * - * @param priv - * Pointer to private structure. - * - * @return - * Zero if the callback process can be called immediately. + * @param sh + * Infiniband device shared context. */ -static int -priv_link_status_update(struct priv *priv) +static void +mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) { - struct rte_eth_link *link = &priv->dev->data->dev_link; + uint32_t i; - mlx5_link_update(priv->dev, 0); - if (((link->link_speed == 0) && link->link_status) || - ((link->link_speed != 0) && !link->link_status)) { - /* - * Inconsistent status. Event likely occurred before the - * kernel netdevice exposes the new status. - */ - if (!priv->pending_alarm) { - priv->pending_alarm = 1; - rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, - mlx5_dev_link_status_handler, - priv->dev); + 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; } - return 1; - } else if (unlikely(priv->pending_alarm)) { - /* Link interrupt occurred while alarm is already scheduled. */ - priv->pending_alarm = 0; - rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); + dev = &rte_eth_devices[sh->port[i].ih_port_id]; + assert(dev); + if (dev->data->dev_conf.intr_conf.rmv) + _rte_eth_dev_callback_process + (dev, RTE_ETH_EVENT_INTR_RMV, NULL); } - return 0; } /** - * Device status handler. - * - * @param priv - * Pointer to private structure. - * @param events - * Pointer to event flags holder. + * Handle shared asynchronous events the NIC (removal event + * and link status change). Supports multiport IB device. * - * @return - * Events bitmap of callback process which can be called immediately. + * @param cb_arg + * Callback argument. */ -static uint32_t -priv_dev_status_handler(struct priv *priv) +void +mlx5_dev_interrupt_handler(void *cb_arg) { + struct mlx5_ibv_shared *sh = cb_arg; struct ibv_async_event event; - uint32_t ret = 0; - /* Read all message and acknowledge them. */ + /* Read all message from the IB device and acknowledge them. */ for (;;) { - if (ibv_get_async_event(priv->ctx, &event)) + 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; + } + 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]; + assert(dev); if ((event.event_type == IBV_EVENT_PORT_ACTIVE || - event.event_type == IBV_EVENT_PORT_ERR) && - (priv->dev->data->dev_conf.intr_conf.lsc == 1)) - ret |= (1 << RTE_ETH_EVENT_INTR_LSC); - else if (event.event_type == IBV_EVENT_DEVICE_FATAL && - priv->dev->data->dev_conf.intr_conf.rmv == 1) - ret |= (1 << RTE_ETH_EVENT_INTR_RMV); - else - DEBUG("event type %d on port %d not handled", - event.event_type, event.element.port_num); - ibv_ack_async_event(&event); + 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); } - if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) - if (priv_link_status_update(priv)) - ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); - return ret; } -/** - * Handle delayed link status event. - * - * @param arg - * Registered argument. +/* + * 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_dev_link_status_handler(void *arg) +mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, + rte_intr_callback_fn cb_fn, void *cb_arg) { - struct rte_eth_dev *dev = arg; - struct priv *priv = dev->data->dev_private; - int ret; + /* + * 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; - priv_lock(priv); - assert(priv->pending_alarm == 1); - priv->pending_alarm = 0; - ret = priv_link_status_update(priv); - priv_unlock(priv); - if (!ret) - _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, - NULL); + 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); + 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(); + 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 interrupts from the NIC. + * Handle DEVX interrupts from the NIC. + * This function is probably called from the DPDK host thread. * - * @param[in] intr_handle - * Interrupt handler. * @param cb_arg * Callback argument. */ void -mlx5_dev_interrupt_handler(void *cb_arg) +mlx5_dev_interrupt_handler_devx(void *cb_arg) { - struct rte_eth_dev *dev = cb_arg; - struct priv *priv = dev->data->dev_private; - uint32_t events; - - priv_lock(priv); - events = priv_dev_status_handler(priv); - priv_unlock(priv); - if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) - _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, - NULL); - if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) - _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL, - NULL); +#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 */ } /** - * Handle interrupts from the socket. + * Uninstall shared asynchronous device events handler. + * This function is implemented to support event sharing + * between multiple ports of single IB device. * - * @param cb_arg - * Callback argument. + * @param dev + * Pointer to Ethernet device. */ static void -mlx5_dev_handler_socket(void *cb_arg) +mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) { - struct rte_eth_dev *dev = cb_arg; - struct priv *priv = dev->data->dev_private; + 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); + assert(priv->ibv_port); + assert(priv->ibv_port <= sh->max_port); + assert(dev->data->port_id < RTE_MAX_ETHPORTS); + if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) + goto exit; + assert(sh->port[priv->ibv_port - 1].ih_port_id == + (uint32_t)dev->data->port_id); + 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; + 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); +} - priv_lock(priv); - priv_socket_handle(priv); - priv_unlock(priv); +/** + * 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); + assert(priv->ibv_port); + assert(priv->ibv_port <= sh->max_port); + 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. */ + assert(sh->intr_cnt); + goto exit; + } + sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; + if (sh->intr_cnt) { + sh->intr_cnt++; + goto exit; + } + /* No shared handler installed. */ + 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"); + goto error; + } + 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); + if (priv->config.devx) { +#ifndef HAVE_IBV_DEVX_ASYNC + goto error_unregister; +#else + sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); + if (sh->devx_comp) { + flags = fcntl(sh->devx_comp->fd, F_GETFL); + 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"); + goto error_unregister; + } + 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); + } else { + DRV_LOG(INFO, "failed to create devx async command " + "completion"); + goto error_unregister; + } +#endif /* HAVE_IBV_DEVX_ASYNC */ + } + sh->intr_cnt++; + goto exit; +error_unregister: + rte_intr_callback_unregister(&sh->intr_handle, + mlx5_dev_interrupt_handler, sh); +error: + /* Indicate there will be no interrupts. */ + dev->data->dev_conf.intr_conf.lsc = 0; + dev->data->dev_conf.intr_conf.rmv = 0; + sh->intr_handle.fd = 0; + sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; + sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; +exit: + pthread_mutex_unlock(&sh->intr_mutex); } /** * Uninstall interrupt handler. * - * @param priv - * Pointer to private structure. * @param dev - * Pointer to the rte_eth_dev structure. + * Pointer to Ethernet device. */ void -priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) +mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) { - if (dev->data->dev_conf.intr_conf.lsc || - dev->data->dev_conf.intr_conf.rmv) - rte_intr_callback_unregister(&priv->intr_handle, - mlx5_dev_interrupt_handler, dev); - if (priv->primary_socket) - rte_intr_callback_unregister(&priv->intr_handle_socket, - mlx5_dev_handler_socket, dev); - if (priv->pending_alarm) - rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); - priv->pending_alarm = 0; - priv->intr_handle.fd = 0; - priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; - priv->intr_handle_socket.fd = 0; - priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; + mlx5_dev_shared_handler_uninstall(dev); } /** * Install interrupt handler. * - * @param priv - * Pointer to private structure. * @param dev - * Pointer to the rte_eth_dev structure. + * Pointer to Ethernet device. */ void -priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) +mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) { - int rc, flags; - - assert(priv->ctx->async_fd > 0); - flags = fcntl(priv->ctx->async_fd, F_GETFL); - rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); - if (rc < 0) { - INFO("failed to change file descriptor async event queue"); - dev->data->dev_conf.intr_conf.lsc = 0; - dev->data->dev_conf.intr_conf.rmv = 0; - } - if (dev->data->dev_conf.intr_conf.lsc || - dev->data->dev_conf.intr_conf.rmv) { - priv->intr_handle.fd = priv->ctx->async_fd; - priv->intr_handle.type = RTE_INTR_HANDLE_EXT; - rte_intr_callback_register(&priv->intr_handle, - mlx5_dev_interrupt_handler, dev); - } - - rc = priv_socket_init(priv); - if (!rc && priv->primary_socket) { - priv->intr_handle_socket.fd = priv->primary_socket; - priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; - rte_intr_callback_register(&priv->intr_handle_socket, - mlx5_dev_handler_socket, dev); - } + mlx5_dev_shared_handler_install(dev); } /** - * Change the link state (UP / DOWN). + * DPDK callback to bring the link DOWN. * - * @param priv - * Pointer to private data structure. * @param dev - * Pointer to rte_eth_dev structure. - * @param up - * Nonzero for link up, otherwise link down. + * Pointer to Ethernet device structure. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ -static int -priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) +int +mlx5_set_link_down(struct rte_eth_dev *dev) { - int err; - - if (up) { - err = priv_set_flags(priv, ~IFF_UP, IFF_UP); - if (err) - return err; - dev->tx_pkt_burst = priv_select_tx_function(priv, dev); - dev->rx_pkt_burst = priv_select_rx_function(priv, dev); - } else { - err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); - if (err) - return err; - dev->rx_pkt_burst = removed_rx_burst; - dev->tx_pkt_burst = removed_tx_burst; - } - return 0; + return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); } /** - * DPDK callback to bring the link DOWN. + * DPDK callback to bring the link UP. * * @param dev * Pointer to Ethernet device structure. * * @return - * 0 on success, errno value on failure. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ int -mlx5_set_link_down(struct rte_eth_dev *dev) +mlx5_set_link_up(struct rte_eth_dev *dev) { - struct priv *priv = dev->data->dev_private; - int err; + return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); +} - priv_lock(priv); - err = priv_dev_set_link(priv, dev, 0); - priv_unlock(priv); - return err; +/** + * Configure the RX function to use. + * + * @param dev + * Pointer to private data structure. + * + * @return + * Pointer to selected Rx burst function. + */ +eth_rx_burst_t +mlx5_select_rx_function(struct rte_eth_dev *dev) +{ + eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; + + assert(dev != NULL); + if (mlx5_check_vec_rx_support(dev) > 0) { + rx_pkt_burst = mlx5_rx_burst_vec; + DRV_LOG(DEBUG, "port %u selected Rx vectorized function", + dev->data->port_id); + } else if (mlx5_mprq_enabled(dev)) { + rx_pkt_burst = mlx5_rx_burst_mprq; + } + return rx_pkt_burst; } /** - * DPDK callback to bring the link UP. + * Check if mlx5 device was removed. * * @param dev * Pointer to Ethernet device structure. * * @return - * 0 on success, errno value on failure. + * 1 when device is removed, otherwise 0. */ int -mlx5_set_link_up(struct rte_eth_dev *dev) +mlx5_is_removed(struct rte_eth_dev *dev) { - struct priv *priv = dev->data->dev_private; - int err; + struct ibv_device_attr device_attr; + struct mlx5_priv *priv = dev->data->dev_private; - priv_lock(priv); - err = priv_dev_set_link(priv, dev, 1); - priv_unlock(priv); - return err; + if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) + return 1; + return 0; } /** - * Configure the TX function to use. + * Get port ID list of mlx5 instances sharing a common device. * - * @param priv - * Pointer to private data structure. - * @param dev - * Pointer to rte_eth_dev structure. + * @param[in] dev + * Device to look for. + * @param[out] port_list + * Result buffer for collected port IDs. + * @param port_list_n + * Maximum number of entries in result buffer. If 0, @p port_list can be + * NULL. * * @return - * Pointer to selected Tx burst function. + * Number of matching instances regardless of the @p port_list_n + * parameter, 0 if none were found. */ -eth_tx_burst_t -priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) +unsigned int +mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list, + unsigned int port_list_n) { - eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; - struct mlx5_dev_config *config = &priv->config; - uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; - int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | - DEV_TX_OFFLOAD_VXLAN_TNL_TSO | - DEV_TX_OFFLOAD_GRE_TNL_TSO)); - int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); - - assert(priv != NULL); - /* Select appropriate TX function. */ - if (vlan_insert || tso) - return tx_pkt_burst; - if (config->mps == MLX5_MPW_ENHANCED) { - if (priv_check_vec_tx_support(priv, dev) > 0) { - if (priv_check_raw_vec_tx_support(priv, dev) > 0) - tx_pkt_burst = mlx5_tx_burst_raw_vec; - else - tx_pkt_burst = mlx5_tx_burst_vec; - DEBUG("selected Enhanced MPW TX vectorized function"); - } else { - tx_pkt_burst = mlx5_tx_burst_empw; - DEBUG("selected Enhanced MPW TX function"); - } - } else if (config->mps && (config->txq_inline > 0)) { - tx_pkt_burst = mlx5_tx_burst_mpw_inline; - DEBUG("selected MPW inline TX function"); - } else if (config->mps) { - tx_pkt_burst = mlx5_tx_burst_mpw; - DEBUG("selected MPW TX function"); + uint16_t id; + unsigned int n = 0; + + RTE_ETH_FOREACH_DEV_OF(id, dev) { + if (n < port_list_n) + port_list[n] = id; + n++; } - return tx_pkt_burst; + return n; } /** - * Configure the RX function to use. + * Get the E-Switch domain id this port belongs to. * - * @param priv - * Pointer to private data structure. - * @param dev - * Pointer to rte_eth_dev structure. + * @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 selected Rx burst function. + * 0 on success, a negative errno value otherwise and rte_errno is set. */ -eth_rx_burst_t -priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) +int +mlx5_port_to_eswitch_info(uint16_t port, + uint16_t *es_domain_id, uint16_t *es_port_id) { - eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; + struct rte_eth_dev *dev; + struct mlx5_priv *priv; - assert(priv != NULL); - if (priv_check_vec_rx_support(priv) > 0) { - rx_pkt_burst = mlx5_rx_burst_vec; - DEBUG("selected RX vectorized function"); + if (port >= RTE_MAX_ETHPORTS) { + rte_errno = EINVAL; + return -rte_errno; } - return rx_pkt_burst; + if (!rte_eth_dev_is_valid_port(port)) { + rte_errno = ENODEV; + return -rte_errno; + } + dev = &rte_eth_devices[port]; + priv = dev->data->dev_private; + if (!(priv->representor || priv->master)) { + rte_errno = EINVAL; + return -rte_errno; + } + if (es_domain_id) + *es_domain_id = priv->domain_id; + if (es_port_id) + *es_port_id = priv->vport_id; + return 0; +} + +/** + * 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; + 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 Netlink to recognize master + * and representor devices for E-Switch configuration. + * + * @param[in] num_vf_set + * flag of presence of number of VFs port attribute. + * @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_nl_check_switch_info(bool num_vf_set, + 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 number of VFs key presence. + */ + switch_info->master = num_vf_set; + 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 + * number of VFs key. + */ + switch_info->master = num_vf_set; + 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 = !num_vf_set; + break; + case MLX5_PHYS_PORT_NAME_TYPE_PFVF: + /* New representors naming schema. */ + switch_info->representor = 1; + break; + } +} + +/** + * 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; + } +} + +/** + * Extract port name, as a number, from sysfs or netlink information. + * + * @param[in] port_name_in + * String representing the port name. + * @param[out] port_info_out + * Port information, including port name as a number and port name + * type if recognized + * + * @return + * port_name field set according to recognized name format. + */ +void +mlx5_translate_port_name(const char *port_name_in, + struct mlx5_switch_info *port_info_out) +{ + char pf_c1, pf_c2, vf_c1, vf_c2; + char *end; + int sc_items; + + /* + * Check for port-name as a string of the form pf0vf0 + * (support kernel ver >= 5.0 or OFED ver >= 4.6). + */ + sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", + &pf_c1, &pf_c2, &port_info_out->pf_num, + &vf_c1, &vf_c2, &port_info_out->port_name); + if (sc_items == 6 && + pf_c1 == 'p' && pf_c2 == 'f' && + vf_c1 == 'v' && vf_c2 == 'f') { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; + return; + } + /* + * Check for port-name as a string of the form p0 + * (support kernel ver >= 5.0, or OFED ver >= 4.6). + */ + sc_items = sscanf(port_name_in, "%c%d", + &pf_c1, &port_info_out->port_name); + if (sc_items == 2 && pf_c1 == 'p') { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; + return; + } + /* Check for port-name as a number (support kernel ver < 5.0 */ + errno = 0; + port_info_out->port_name = strtol(port_name_in, &end, 0); + if (!errno && + (size_t)(end - port_name_in) == strlen(port_name_in)) { + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; + return; + } + port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; + return; }