1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
18 #include <sys/ioctl.h>
19 #include <sys/socket.h>
20 #include <netinet/in.h>
21 #include <linux/ethtool.h>
22 #include <linux/sockios.h>
28 #include <rte_atomic.h>
29 #include <rte_ethdev_driver.h>
30 #include <rte_bus_pci.h>
32 #include <rte_common.h>
33 #include <rte_interrupts.h>
34 #include <rte_malloc.h>
35 #include <rte_string_fns.h>
36 #include <rte_rwlock.h>
37 #include <rte_cycles.h>
40 #include "mlx5_glue.h"
41 #include "mlx5_rxtx.h"
42 #include "mlx5_utils.h"
44 /* Supported speed values found in /usr/include/linux/ethtool.h */
45 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
46 #define SUPPORTED_40000baseKR4_Full (1 << 23)
48 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
49 #define SUPPORTED_40000baseCR4_Full (1 << 24)
51 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
52 #define SUPPORTED_40000baseSR4_Full (1 << 25)
54 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
55 #define SUPPORTED_40000baseLR4_Full (1 << 26)
57 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
58 #define SUPPORTED_56000baseKR4_Full (1 << 27)
60 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
61 #define SUPPORTED_56000baseCR4_Full (1 << 28)
63 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
64 #define SUPPORTED_56000baseSR4_Full (1 << 29)
66 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
67 #define SUPPORTED_56000baseLR4_Full (1 << 30)
70 /* Add defines in case the running kernel is not the same as user headers. */
71 #ifndef ETHTOOL_GLINKSETTINGS
72 struct ethtool_link_settings {
81 uint8_t eth_tp_mdix_ctrl;
82 int8_t link_mode_masks_nwords;
84 uint32_t link_mode_masks[];
87 #define ETHTOOL_GLINKSETTINGS 0x0000004c
88 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
89 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
90 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
91 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
92 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
93 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
94 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
95 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
96 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
97 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
98 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
99 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
100 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
101 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
102 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
103 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
105 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
106 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
107 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
108 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
110 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
111 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
112 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
114 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
115 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
116 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
117 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
118 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
122 * Get master interface name from private structure.
125 * Pointer to Ethernet device.
127 * Interface name output buffer.
130 * 0 on success, a negative errno value otherwise and rte_errno is set.
133 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
137 unsigned int dev_type = 0;
138 unsigned int dev_port_prev = ~0u;
139 char match[IF_NAMESIZE] = "";
143 MKSTR(path, "%s/device/net", ibdev_path);
151 while ((dent = readdir(dir)) != NULL) {
152 char *name = dent->d_name;
154 unsigned int dev_port;
157 if ((name[0] == '.') &&
158 ((name[1] == '\0') ||
159 ((name[1] == '.') && (name[2] == '\0'))))
162 MKSTR(path, "%s/device/net/%s/%s",
164 (dev_type ? "dev_id" : "dev_port"));
166 file = fopen(path, "rb");
171 * Switch to dev_id when dev_port does not exist as
172 * is the case with Linux kernel versions < 3.15.
183 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
188 * Switch to dev_id when dev_port returns the same value for
189 * all ports. May happen when using a MOFED release older than
190 * 3.0 with a Linux kernel >= 3.15.
192 if (dev_port == dev_port_prev)
194 dev_port_prev = dev_port;
196 strlcpy(match, name, sizeof(match));
199 if (match[0] == '\0') {
203 strncpy(*ifname, match, sizeof(*ifname));
208 * Get interface name from private structure.
210 * This is a port representor-aware version of mlx5_get_master_ifname().
213 * Pointer to Ethernet device.
215 * Interface name output buffer.
218 * 0 on success, a negative errno value otherwise and rte_errno is set.
221 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
223 struct mlx5_priv *priv = dev->data->dev_private;
224 unsigned int ifindex;
228 ifindex = mlx5_ifindex(dev);
230 if (!priv->representor)
231 return mlx5_get_master_ifname(priv->sh->ibdev_path,
236 if (if_indextoname(ifindex, &(*ifname)[0]))
243 * Get the interface index from device name.
246 * Pointer to Ethernet device.
249 * Nonzero interface index on success, zero otherwise and rte_errno is set.
252 mlx5_ifindex(const struct rte_eth_dev *dev)
254 struct mlx5_priv *priv = dev->data->dev_private;
255 unsigned int ifindex;
258 assert(priv->if_index);
259 ifindex = priv->if_index;
266 * Perform ifreq ioctl() on associated Ethernet device.
269 * Pointer to Ethernet device.
271 * Request number to pass to ioctl().
273 * Interface request structure output buffer.
276 * 0 on success, a negative errno value otherwise and rte_errno is set.
279 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
281 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
288 ret = mlx5_get_ifname(dev, &ifr->ifr_name);
291 ret = ioctl(sock, req, ifr);
307 * Pointer to Ethernet device.
309 * MTU value output buffer.
312 * 0 on success, a negative errno value otherwise and rte_errno is set.
315 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
317 struct ifreq request;
318 int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
322 *mtu = request.ifr_mtu;
330 * Pointer to Ethernet device.
335 * 0 on success, a negative errno value otherwise and rte_errno is set.
338 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
340 struct ifreq request = { .ifr_mtu = mtu, };
342 return mlx5_ifreq(dev, SIOCSIFMTU, &request);
349 * Pointer to Ethernet device.
351 * Bitmask for flags that must remain untouched.
353 * Bitmask for flags to modify.
356 * 0 on success, a negative errno value otherwise and rte_errno is set.
359 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
361 struct ifreq request;
362 int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
366 request.ifr_flags &= keep;
367 request.ifr_flags |= flags & ~keep;
368 return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
372 * DPDK callback for Ethernet device configuration.
375 * Pointer to Ethernet device structure.
378 * 0 on success, a negative errno value otherwise and rte_errno is set.
381 mlx5_dev_configure(struct rte_eth_dev *dev)
383 struct mlx5_priv *priv = dev->data->dev_private;
384 unsigned int rxqs_n = dev->data->nb_rx_queues;
385 unsigned int txqs_n = dev->data->nb_tx_queues;
386 const uint8_t use_app_rss_key =
387 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
390 if (use_app_rss_key &&
391 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
392 MLX5_RSS_HASH_KEY_LEN)) {
393 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
394 dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
398 priv->rss_conf.rss_key =
399 rte_realloc(priv->rss_conf.rss_key,
400 MLX5_RSS_HASH_KEY_LEN, 0);
401 if (!priv->rss_conf.rss_key) {
402 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
403 dev->data->port_id, rxqs_n);
408 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
410 memcpy(priv->rss_conf.rss_key,
412 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
413 rss_hash_default_key,
414 MLX5_RSS_HASH_KEY_LEN);
415 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
416 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
417 priv->rxqs = (void *)dev->data->rx_queues;
418 priv->txqs = (void *)dev->data->tx_queues;
419 if (txqs_n != priv->txqs_n) {
420 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
421 dev->data->port_id, priv->txqs_n, txqs_n);
422 priv->txqs_n = txqs_n;
424 if (rxqs_n > priv->config.ind_table_max_size) {
425 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
426 dev->data->port_id, rxqs_n);
430 if (rxqs_n != priv->rxqs_n) {
431 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
432 dev->data->port_id, priv->rxqs_n, rxqs_n);
433 priv->rxqs_n = rxqs_n;
435 priv->skip_default_rss_reta = 0;
436 ret = mlx5_proc_priv_init(dev);
443 * Configure default RSS reta.
446 * Pointer to Ethernet device structure.
449 * 0 on success, a negative errno value otherwise and rte_errno is set.
452 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
454 struct mlx5_priv *priv = dev->data->dev_private;
455 unsigned int rxqs_n = dev->data->nb_rx_queues;
458 unsigned int reta_idx_n;
460 unsigned int *rss_queue_arr = NULL;
461 unsigned int rss_queue_n = 0;
463 if (priv->skip_default_rss_reta)
465 rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
466 if (!rss_queue_arr) {
467 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
468 dev->data->port_id, rxqs_n);
472 for (i = 0, j = 0; i < rxqs_n; i++) {
473 struct mlx5_rxq_data *rxq_data;
474 struct mlx5_rxq_ctrl *rxq_ctrl;
476 rxq_data = (*priv->rxqs)[i];
477 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
478 if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
479 rss_queue_arr[j++] = i;
482 if (rss_queue_n > priv->config.ind_table_max_size) {
483 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
484 dev->data->port_id, rss_queue_n);
486 rte_free(rss_queue_arr);
489 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
490 dev->data->port_id, priv->rxqs_n, rxqs_n);
491 priv->rxqs_n = rxqs_n;
493 * If the requested number of RX queues is not a power of two,
494 * use the maximum indirection table size for better balancing.
495 * The result is always rounded to the next power of two.
497 reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
498 priv->config.ind_table_max_size :
500 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
502 rte_free(rss_queue_arr);
506 * When the number of RX queues is not a power of two,
507 * the remaining table entries are padded with reused WQs
508 * and hashes are not spread uniformly.
510 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
511 (*priv->reta_idx)[i] = rss_queue_arr[j];
512 if (++j == rss_queue_n)
515 rte_free(rss_queue_arr);
520 * Sets default tuning parameters.
523 * Pointer to Ethernet device.
525 * Info structure output buffer.
528 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
530 struct mlx5_priv *priv = dev->data->dev_private;
532 /* Minimum CPU utilization. */
533 info->default_rxportconf.ring_size = 256;
534 info->default_txportconf.ring_size = 256;
535 info->default_rxportconf.burst_size = 64;
536 info->default_txportconf.burst_size = 64;
537 if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
538 info->default_rxportconf.nb_queues = 16;
539 info->default_txportconf.nb_queues = 16;
540 if (dev->data->nb_rx_queues > 2 ||
541 dev->data->nb_tx_queues > 2) {
542 /* Max Throughput. */
543 info->default_rxportconf.ring_size = 2048;
544 info->default_txportconf.ring_size = 2048;
547 info->default_rxportconf.nb_queues = 8;
548 info->default_txportconf.nb_queues = 8;
549 if (dev->data->nb_rx_queues > 2 ||
550 dev->data->nb_tx_queues > 2) {
551 /* Max Throughput. */
552 info->default_rxportconf.ring_size = 4096;
553 info->default_txportconf.ring_size = 4096;
559 * Sets tx mbuf limiting parameters.
562 * Pointer to Ethernet device.
564 * Info structure output buffer.
567 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
569 struct mlx5_priv *priv = dev->data->dev_private;
570 struct mlx5_dev_config *config = &priv->config;
574 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
575 MLX5_SEND_DEF_INLINE_LEN :
576 (unsigned int)config->txq_inline_max;
577 assert(config->txq_inline_min >= 0);
578 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
579 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
580 MLX5_ESEG_MIN_INLINE_SIZE -
583 MLX5_WQE_DSEG_SIZE * 2);
584 nb_max = (MLX5_WQE_SIZE_MAX +
585 MLX5_ESEG_MIN_INLINE_SIZE -
589 inlen) / MLX5_WSEG_SIZE;
590 info->tx_desc_lim.nb_seg_max = nb_max;
591 info->tx_desc_lim.nb_mtu_seg_max = nb_max;
595 * DPDK callback to get information about the device.
598 * Pointer to Ethernet device structure.
600 * Info structure output buffer.
603 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
605 struct mlx5_priv *priv = dev->data->dev_private;
606 struct mlx5_dev_config *config = &priv->config;
609 /* FIXME: we should ask the device for these values. */
610 info->min_rx_bufsize = 32;
611 info->max_rx_pktlen = 65536;
613 * Since we need one CQ per QP, the limit is the minimum number
614 * between the two values.
616 max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
617 priv->sh->device_attr.orig_attr.max_qp);
618 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
621 info->max_rx_queues = max;
622 info->max_tx_queues = max;
623 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
624 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
625 info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
626 info->rx_queue_offload_capa);
627 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
628 info->if_index = mlx5_ifindex(dev);
629 info->reta_size = priv->reta_idx_n ?
630 priv->reta_idx_n : config->ind_table_max_size;
631 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
632 info->speed_capa = priv->link_speed_capa;
633 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
634 mlx5_set_default_params(dev, info);
635 mlx5_set_txlimit_params(dev, info);
636 info->switch_info.name = dev->data->name;
637 info->switch_info.domain_id = priv->domain_id;
638 info->switch_info.port_id = priv->representor_id;
639 if (priv->representor) {
642 if (priv->pf_bond >= 0) {
644 * Switch port ID is opaque value with driver defined
645 * format. Push the PF index in bonding configurations
646 * in upper four bits of port ID. If we get too many
647 * representors (more than 4K) or PFs (more than 15)
648 * this approach must be reconsidered.
650 if ((info->switch_info.port_id >>
651 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
652 priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
653 DRV_LOG(ERR, "can't update switch port ID"
654 " for bonding device");
658 info->switch_info.port_id |=
659 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
661 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
662 struct mlx5_priv *opriv =
663 rte_eth_devices[port_id].data->dev_private;
666 opriv->representor ||
667 opriv->sh != priv->sh ||
668 opriv->domain_id != priv->domain_id)
671 * Override switch name with that of the master
674 info->switch_info.name = opriv->dev_data->name;
682 * Get device current raw clock counter
685 * Pointer to Ethernet device structure.
687 * Current raw clock counter of the device.
690 * 0 if the clock has correctly been read
691 * The value of errno in case of error
694 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
696 struct mlx5_priv *priv = dev->data->dev_private;
697 struct ibv_context *ctx = priv->sh->ctx;
698 struct ibv_values_ex values;
701 values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
702 err = mlx5_glue->query_rt_values_ex(ctx, &values);
704 DRV_LOG(WARNING, "Could not query the clock !");
707 *clock = values.raw_clock.tv_nsec;
712 * Get firmware version of a device.
715 * Ethernet device port.
717 * String output allocated by caller.
719 * Size of the output string, including terminating null byte.
722 * 0 on success, or the size of the non truncated string if too big.
724 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
726 struct mlx5_priv *priv = dev->data->dev_private;
727 struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
728 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
733 strlcpy(fw_ver, attr->fw_ver, fw_size);
738 * Get supported packet types.
741 * Pointer to Ethernet device structure.
744 * A pointer to the supported Packet types array.
747 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
749 static const uint32_t ptypes[] = {
750 /* refers to rxq_cq_to_pkt_type() */
752 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
753 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
754 RTE_PTYPE_L4_NONFRAG,
758 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
759 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
760 RTE_PTYPE_INNER_L4_NONFRAG,
761 RTE_PTYPE_INNER_L4_FRAG,
762 RTE_PTYPE_INNER_L4_TCP,
763 RTE_PTYPE_INNER_L4_UDP,
767 if (dev->rx_pkt_burst == mlx5_rx_burst ||
768 dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
769 dev->rx_pkt_burst == mlx5_rx_burst_vec)
775 * Retrieve the master device for representor in the same switch domain.
778 * Pointer to representor Ethernet device structure.
781 * Master device structure on success, NULL otherwise.
784 static struct rte_eth_dev *
785 mlx5_find_master_dev(struct rte_eth_dev *dev)
787 struct mlx5_priv *priv;
791 priv = dev->data->dev_private;
792 domain_id = priv->domain_id;
793 assert(priv->representor);
794 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
795 struct mlx5_priv *opriv =
796 rte_eth_devices[port_id].data->dev_private;
799 opriv->domain_id == domain_id &&
800 opriv->sh == priv->sh)
801 return &rte_eth_devices[port_id];
807 * DPDK callback to retrieve physical link information.
810 * Pointer to Ethernet device structure.
812 * Storage for current link status.
815 * 0 on success, a negative errno value otherwise and rte_errno is set.
818 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
819 struct rte_eth_link *link)
821 struct mlx5_priv *priv = dev->data->dev_private;
822 struct ethtool_cmd edata = {
823 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
826 struct rte_eth_link dev_link;
830 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
832 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
833 dev->data->port_id, strerror(rte_errno));
836 dev_link = (struct rte_eth_link) {
837 .link_status = ((ifr.ifr_flags & IFF_UP) &&
838 (ifr.ifr_flags & IFF_RUNNING)),
840 ifr = (struct ifreq) {
841 .ifr_data = (void *)&edata,
843 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
845 if (ret == -ENOTSUP && priv->representor) {
846 struct rte_eth_dev *master;
849 * For representors we can try to inherit link
850 * settings from the master device. Actually
851 * link settings do not make a lot of sense
852 * for representors due to missing physical
853 * link. The old kernel drivers supported
854 * emulated settings query for representors,
855 * the new ones do not, so we have to add
856 * this code for compatibility issues.
858 master = mlx5_find_master_dev(dev);
860 ifr = (struct ifreq) {
861 .ifr_data = (void *)&edata,
863 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
868 "port %u ioctl(SIOCETHTOOL,"
869 " ETHTOOL_GSET) failed: %s",
870 dev->data->port_id, strerror(rte_errno));
874 link_speed = ethtool_cmd_speed(&edata);
875 if (link_speed == -1)
876 dev_link.link_speed = ETH_SPEED_NUM_NONE;
878 dev_link.link_speed = link_speed;
879 priv->link_speed_capa = 0;
880 if (edata.supported & SUPPORTED_Autoneg)
881 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
882 if (edata.supported & (SUPPORTED_1000baseT_Full |
883 SUPPORTED_1000baseKX_Full))
884 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
885 if (edata.supported & SUPPORTED_10000baseKR_Full)
886 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
887 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
888 SUPPORTED_40000baseCR4_Full |
889 SUPPORTED_40000baseSR4_Full |
890 SUPPORTED_40000baseLR4_Full))
891 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
892 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
893 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
894 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
895 ETH_LINK_SPEED_FIXED);
896 if (((dev_link.link_speed && !dev_link.link_status) ||
897 (!dev_link.link_speed && dev_link.link_status))) {
906 * Retrieve physical link information (unlocked version using new ioctl).
909 * Pointer to Ethernet device structure.
911 * Storage for current link status.
914 * 0 on success, a negative errno value otherwise and rte_errno is set.
917 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
918 struct rte_eth_link *link)
921 struct mlx5_priv *priv = dev->data->dev_private;
922 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
924 struct rte_eth_link dev_link;
925 struct rte_eth_dev *master = NULL;
929 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
931 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
932 dev->data->port_id, strerror(rte_errno));
935 dev_link = (struct rte_eth_link) {
936 .link_status = ((ifr.ifr_flags & IFF_UP) &&
937 (ifr.ifr_flags & IFF_RUNNING)),
939 ifr = (struct ifreq) {
940 .ifr_data = (void *)&gcmd,
942 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
944 if (ret == -ENOTSUP && priv->representor) {
946 * For representors we can try to inherit link
947 * settings from the master device. Actually
948 * link settings do not make a lot of sense
949 * for representors due to missing physical
950 * link. The old kernel drivers supported
951 * emulated settings query for representors,
952 * the new ones do not, so we have to add
953 * this code for compatibility issues.
955 master = mlx5_find_master_dev(dev);
957 ifr = (struct ifreq) {
958 .ifr_data = (void *)&gcmd,
960 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
965 "port %u ioctl(SIOCETHTOOL,"
966 " ETHTOOL_GLINKSETTINGS) failed: %s",
967 dev->data->port_id, strerror(rte_errno));
972 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
974 alignas(struct ethtool_link_settings)
975 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
976 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
977 struct ethtool_link_settings *ecmd = (void *)data;
980 ifr.ifr_data = (void *)ecmd;
981 ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
984 "port %u ioctl(SIOCETHTOOL,"
985 "ETHTOOL_GLINKSETTINGS) failed: %s",
986 dev->data->port_id, strerror(rte_errno));
989 dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
991 sc = ecmd->link_mode_masks[0] |
992 ((uint64_t)ecmd->link_mode_masks[1] << 32);
993 priv->link_speed_capa = 0;
994 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
995 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
996 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
997 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
998 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
999 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
1000 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
1001 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
1002 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
1003 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
1004 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
1005 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
1006 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
1007 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
1008 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1009 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1010 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1011 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1012 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1013 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1014 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1015 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1016 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1017 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1018 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1019 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1020 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1021 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1022 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1023 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1024 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1025 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1026 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1027 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1028 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1029 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1030 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1031 ETH_LINK_SPEED_FIXED);
1032 if (((dev_link.link_speed && !dev_link.link_status) ||
1033 (!dev_link.link_speed && dev_link.link_status))) {
1042 * DPDK callback to retrieve physical link information.
1045 * Pointer to Ethernet device structure.
1046 * @param wait_to_complete
1047 * Wait for request completion.
1050 * 0 if link status was not updated, positive if it was, a negative errno
1051 * value otherwise and rte_errno is set.
1054 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1057 struct rte_eth_link dev_link;
1058 time_t start_time = time(NULL);
1059 int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
1062 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1063 if (ret == -ENOTSUP)
1064 ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1067 /* Handle wait to complete situation. */
1068 if ((wait_to_complete || retry) && ret == -EAGAIN) {
1069 if (abs((int)difftime(time(NULL), start_time)) <
1070 MLX5_LINK_STATUS_TIMEOUT) {
1077 } else if (ret < 0) {
1080 } while (wait_to_complete || retry-- > 0);
1081 ret = !!memcmp(&dev->data->dev_link, &dev_link,
1082 sizeof(struct rte_eth_link));
1083 dev->data->dev_link = dev_link;
1088 * DPDK callback to change the MTU.
1091 * Pointer to Ethernet device structure.
1096 * 0 on success, a negative errno value otherwise and rte_errno is set.
1099 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1101 struct mlx5_priv *priv = dev->data->dev_private;
1102 uint16_t kern_mtu = 0;
1105 ret = mlx5_get_mtu(dev, &kern_mtu);
1108 /* Set kernel interface MTU first. */
1109 ret = mlx5_set_mtu(dev, mtu);
1112 ret = mlx5_get_mtu(dev, &kern_mtu);
1115 if (kern_mtu == mtu) {
1117 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1118 dev->data->port_id, mtu);
1126 * DPDK callback to get flow control status.
1129 * Pointer to Ethernet device structure.
1130 * @param[out] fc_conf
1131 * Flow control output buffer.
1134 * 0 on success, a negative errno value otherwise and rte_errno is set.
1137 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1140 struct ethtool_pauseparam ethpause = {
1141 .cmd = ETHTOOL_GPAUSEPARAM
1145 ifr.ifr_data = (void *)ðpause;
1146 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1149 "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1151 dev->data->port_id, strerror(rte_errno));
1154 fc_conf->autoneg = ethpause.autoneg;
1155 if (ethpause.rx_pause && ethpause.tx_pause)
1156 fc_conf->mode = RTE_FC_FULL;
1157 else if (ethpause.rx_pause)
1158 fc_conf->mode = RTE_FC_RX_PAUSE;
1159 else if (ethpause.tx_pause)
1160 fc_conf->mode = RTE_FC_TX_PAUSE;
1162 fc_conf->mode = RTE_FC_NONE;
1167 * DPDK callback to modify flow control parameters.
1170 * Pointer to Ethernet device structure.
1171 * @param[in] fc_conf
1172 * Flow control parameters.
1175 * 0 on success, a negative errno value otherwise and rte_errno is set.
1178 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1181 struct ethtool_pauseparam ethpause = {
1182 .cmd = ETHTOOL_SPAUSEPARAM
1186 ifr.ifr_data = (void *)ðpause;
1187 ethpause.autoneg = fc_conf->autoneg;
1188 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1189 (fc_conf->mode & RTE_FC_RX_PAUSE))
1190 ethpause.rx_pause = 1;
1192 ethpause.rx_pause = 0;
1194 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1195 (fc_conf->mode & RTE_FC_TX_PAUSE))
1196 ethpause.tx_pause = 1;
1198 ethpause.tx_pause = 0;
1199 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1202 "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1204 dev->data->port_id, strerror(rte_errno));
1211 * Get PCI information by sysfs device path.
1214 * Pointer to device sysfs folder name.
1215 * @param[out] pci_addr
1216 * PCI bus address output buffer.
1219 * 0 on success, a negative errno value otherwise and rte_errno is set.
1222 mlx5_dev_to_pci_addr(const char *dev_path,
1223 struct rte_pci_addr *pci_addr)
1227 MKSTR(path, "%s/device/uevent", dev_path);
1229 file = fopen(path, "rb");
1234 while (fgets(line, sizeof(line), file) == line) {
1235 size_t len = strlen(line);
1238 /* Truncate long lines. */
1239 if (len == (sizeof(line) - 1))
1240 while (line[(len - 1)] != '\n') {
1244 line[(len - 1)] = ret;
1246 /* Extract information. */
1249 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1253 &pci_addr->function) == 4) {
1263 * Handle asynchronous removal event for entire multiport device.
1266 * Infiniband device shared context.
1269 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1273 for (i = 0; i < sh->max_port; ++i) {
1274 struct rte_eth_dev *dev;
1276 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1278 * Or not existing port either no
1279 * handler installed for this port.
1283 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1285 if (dev->data->dev_conf.intr_conf.rmv)
1286 _rte_eth_dev_callback_process
1287 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1292 * Handle shared asynchronous events the NIC (removal event
1293 * and link status change). Supports multiport IB device.
1296 * Callback argument.
1299 mlx5_dev_interrupt_handler(void *cb_arg)
1301 struct mlx5_ibv_shared *sh = cb_arg;
1302 struct ibv_async_event event;
1304 /* Read all message from the IB device and acknowledge them. */
1306 struct rte_eth_dev *dev;
1309 if (mlx5_glue->get_async_event(sh->ctx, &event))
1311 /* Retrieve and check IB port index. */
1312 tmp = (uint32_t)event.element.port_num;
1313 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1315 * The DEVICE_FATAL event is called once for
1316 * entire device without port specifying.
1317 * We should notify all existing ports.
1319 mlx5_glue->ack_async_event(&event);
1320 mlx5_dev_interrupt_device_fatal(sh);
1323 assert(tmp && (tmp <= sh->max_port));
1325 /* Unsupported devive level event. */
1326 mlx5_glue->ack_async_event(&event);
1328 "unsupported common event (type %d)",
1332 if (tmp > sh->max_port) {
1333 /* Invalid IB port index. */
1334 mlx5_glue->ack_async_event(&event);
1336 "cannot handle an event (type %d)"
1337 "due to invalid IB port index (%u)",
1338 event.event_type, tmp);
1341 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1342 /* No handler installed. */
1343 mlx5_glue->ack_async_event(&event);
1345 "cannot handle an event (type %d)"
1346 "due to no handler installed for port %u",
1347 event.event_type, tmp);
1350 /* Retrieve ethernet device descriptor. */
1351 tmp = sh->port[tmp - 1].ih_port_id;
1352 dev = &rte_eth_devices[tmp];
1354 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1355 event.event_type == IBV_EVENT_PORT_ERR) &&
1356 dev->data->dev_conf.intr_conf.lsc) {
1357 mlx5_glue->ack_async_event(&event);
1358 if (mlx5_link_update(dev, 0) == -EAGAIN) {
1362 _rte_eth_dev_callback_process
1363 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1367 "port %u cannot handle an unknown event (type %d)",
1368 dev->data->port_id, event.event_type);
1369 mlx5_glue->ack_async_event(&event);
1374 * Unregister callback handler safely. The handler may be active
1375 * while we are trying to unregister it, in this case code -EAGAIN
1376 * is returned by rte_intr_callback_unregister(). This routine checks
1377 * the return code and tries to unregister handler again.
1382 * pointer to callback routine
1384 * opaque callback parameter
1387 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1388 rte_intr_callback_fn cb_fn, void *cb_arg)
1391 * Try to reduce timeout management overhead by not calling
1392 * the timer related routines on the first iteration. If the
1393 * unregistering succeeds on first call there will be no
1394 * timer calls at all.
1402 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1405 if (ret != -EAGAIN) {
1406 DRV_LOG(INFO, "failed to unregister interrupt"
1407 " handler (error: %d)", ret);
1412 struct timespec onems;
1414 /* Wait one millisecond and try again. */
1416 onems.tv_nsec = NS_PER_S / MS_PER_S;
1417 nanosleep(&onems, 0);
1418 /* Check whether one second elapsed. */
1419 if ((rte_get_timer_cycles() - start) <= twait)
1423 * We get the amount of timer ticks for one second.
1424 * If this amount elapsed it means we spent one
1425 * second in waiting. This branch is executed once
1426 * on first iteration.
1428 twait = rte_get_timer_hz();
1432 * Timeout elapsed, show message (once a second) and retry.
1433 * We have no other acceptable option here, if we ignore
1434 * the unregistering return code the handler will not
1435 * be unregistered, fd will be closed and we may get the
1436 * crush. Hanging and messaging in the loop seems not to be
1439 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1440 start = rte_get_timer_cycles();
1445 * Handle DEVX interrupts from the NIC.
1446 * This function is probably called from the DPDK host thread.
1449 * Callback argument.
1452 mlx5_dev_interrupt_handler_devx(void *cb_arg)
1454 #ifndef HAVE_IBV_DEVX_ASYNC
1458 struct mlx5_ibv_shared *sh = cb_arg;
1460 struct mlx5dv_devx_async_cmd_hdr cmd_resp;
1461 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
1462 MLX5_ST_SZ_BYTES(traffic_counter) +
1463 sizeof(struct mlx5dv_devx_async_cmd_hdr)];
1465 uint8_t *buf = out.buf + sizeof(out.cmd_resp);
1467 while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp,
1470 mlx5_flow_async_pool_query_handle
1471 (sh, (uint64_t)out.cmd_resp.wr_id,
1472 mlx5_devx_get_out_command_status(buf));
1473 #endif /* HAVE_IBV_DEVX_ASYNC */
1477 * Uninstall shared asynchronous device events handler.
1478 * This function is implemented to support event sharing
1479 * between multiple ports of single IB device.
1482 * Pointer to Ethernet device.
1485 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1487 struct mlx5_priv *priv = dev->data->dev_private;
1488 struct mlx5_ibv_shared *sh = priv->sh;
1490 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1492 pthread_mutex_lock(&sh->intr_mutex);
1493 assert(priv->ibv_port);
1494 assert(priv->ibv_port <= sh->max_port);
1495 assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1496 if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1498 assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1499 (uint32_t)dev->data->port_id);
1500 assert(sh->intr_cnt);
1501 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1502 if (!sh->intr_cnt || --sh->intr_cnt)
1504 mlx5_intr_callback_unregister(&sh->intr_handle,
1505 mlx5_dev_interrupt_handler, sh);
1506 sh->intr_handle.fd = 0;
1507 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1509 pthread_mutex_unlock(&sh->intr_mutex);
1513 * Uninstall devx shared asynchronous device events handler.
1514 * This function is implemeted to support event sharing
1515 * between multiple ports of single IB device.
1518 * Pointer to Ethernet device.
1521 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev)
1523 struct mlx5_priv *priv = dev->data->dev_private;
1524 struct mlx5_ibv_shared *sh = priv->sh;
1526 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1528 pthread_mutex_lock(&sh->intr_mutex);
1529 assert(priv->ibv_port);
1530 assert(priv->ibv_port <= sh->max_port);
1531 assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1532 if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS)
1534 assert(sh->port[priv->ibv_port - 1].devx_ih_port_id ==
1535 (uint32_t)dev->data->port_id);
1536 sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS;
1537 if (!sh->devx_intr_cnt || --sh->devx_intr_cnt)
1539 if (sh->intr_handle_devx.fd) {
1540 rte_intr_callback_unregister(&sh->intr_handle_devx,
1541 mlx5_dev_interrupt_handler_devx,
1543 sh->intr_handle_devx.fd = 0;
1544 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN;
1546 if (sh->devx_comp) {
1547 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
1548 sh->devx_comp = NULL;
1551 pthread_mutex_unlock(&sh->intr_mutex);
1555 * Install shared asynchronous device events handler.
1556 * This function is implemented to support event sharing
1557 * between multiple ports of single IB device.
1560 * Pointer to Ethernet device.
1563 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1565 struct mlx5_priv *priv = dev->data->dev_private;
1566 struct mlx5_ibv_shared *sh = priv->sh;
1570 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1572 pthread_mutex_lock(&sh->intr_mutex);
1573 assert(priv->ibv_port);
1574 assert(priv->ibv_port <= sh->max_port);
1575 assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1576 if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1577 /* The handler is already installed for this port. */
1578 assert(sh->intr_cnt);
1582 sh->port[priv->ibv_port - 1].ih_port_id =
1583 (uint32_t)dev->data->port_id;
1587 /* No shared handler installed. */
1588 assert(sh->ctx->async_fd > 0);
1589 flags = fcntl(sh->ctx->async_fd, F_GETFL);
1590 ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1592 DRV_LOG(INFO, "failed to change file descriptor async event"
1594 /* Indicate there will be no interrupts. */
1595 dev->data->dev_conf.intr_conf.lsc = 0;
1596 dev->data->dev_conf.intr_conf.rmv = 0;
1598 sh->intr_handle.fd = sh->ctx->async_fd;
1599 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1600 rte_intr_callback_register(&sh->intr_handle,
1601 mlx5_dev_interrupt_handler, sh);
1603 sh->port[priv->ibv_port - 1].ih_port_id =
1604 (uint32_t)dev->data->port_id;
1607 pthread_mutex_unlock(&sh->intr_mutex);
1611 * Install devx shared asyncronous device events handler.
1612 * This function is implemeted to support event sharing
1613 * between multiple ports of single IB device.
1616 * Pointer to Ethernet device.
1619 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev)
1621 struct mlx5_priv *priv = dev->data->dev_private;
1622 struct mlx5_ibv_shared *sh = priv->sh;
1624 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1626 pthread_mutex_lock(&sh->intr_mutex);
1627 assert(priv->ibv_port);
1628 assert(priv->ibv_port <= sh->max_port);
1629 assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1630 if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) {
1631 /* The handler is already installed for this port. */
1632 assert(sh->devx_intr_cnt);
1635 if (sh->devx_intr_cnt) {
1636 sh->devx_intr_cnt++;
1637 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1638 (uint32_t)dev->data->port_id;
1641 if (priv->config.devx) {
1642 #ifndef HAVE_IBV_DEVX_ASYNC
1645 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx);
1646 if (sh->devx_comp) {
1647 int flags = fcntl(sh->devx_comp->fd, F_GETFL);
1648 int ret = fcntl(sh->devx_comp->fd, F_SETFL,
1649 flags | O_NONBLOCK);
1652 DRV_LOG(INFO, "failed to change file descriptor"
1653 " devx async event queue");
1655 sh->intr_handle_devx.fd = sh->devx_comp->fd;
1656 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
1657 rte_intr_callback_register
1658 (&sh->intr_handle_devx,
1659 mlx5_dev_interrupt_handler_devx, sh);
1660 sh->devx_intr_cnt++;
1661 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1662 (uint32_t)dev->data->port_id;
1665 #endif /* HAVE_IBV_DEVX_ASYNC */
1668 pthread_mutex_unlock(&sh->intr_mutex);
1672 * Uninstall interrupt handler.
1675 * Pointer to Ethernet device.
1678 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1680 mlx5_dev_shared_handler_uninstall(dev);
1684 * Install interrupt handler.
1687 * Pointer to Ethernet device.
1690 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1692 mlx5_dev_shared_handler_install(dev);
1696 * Devx uninstall interrupt handler.
1699 * Pointer to Ethernet device.
1702 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev)
1704 mlx5_dev_shared_handler_devx_uninstall(dev);
1708 * Devx install interrupt handler.
1711 * Pointer to Ethernet device.
1714 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev)
1716 mlx5_dev_shared_handler_devx_install(dev);
1720 * DPDK callback to bring the link DOWN.
1723 * Pointer to Ethernet device structure.
1726 * 0 on success, a negative errno value otherwise and rte_errno is set.
1729 mlx5_set_link_down(struct rte_eth_dev *dev)
1731 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1735 * DPDK callback to bring the link UP.
1738 * Pointer to Ethernet device structure.
1741 * 0 on success, a negative errno value otherwise and rte_errno is set.
1744 mlx5_set_link_up(struct rte_eth_dev *dev)
1746 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1750 * Configure the RX function to use.
1753 * Pointer to private data structure.
1756 * Pointer to selected Rx burst function.
1759 mlx5_select_rx_function(struct rte_eth_dev *dev)
1761 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1763 assert(dev != NULL);
1764 if (mlx5_check_vec_rx_support(dev) > 0) {
1765 rx_pkt_burst = mlx5_rx_burst_vec;
1766 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1767 dev->data->port_id);
1768 } else if (mlx5_mprq_enabled(dev)) {
1769 rx_pkt_burst = mlx5_rx_burst_mprq;
1771 return rx_pkt_burst;
1775 * Check if mlx5 device was removed.
1778 * Pointer to Ethernet device structure.
1781 * 1 when device is removed, otherwise 0.
1784 mlx5_is_removed(struct rte_eth_dev *dev)
1786 struct ibv_device_attr device_attr;
1787 struct mlx5_priv *priv = dev->data->dev_private;
1789 if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1795 * Get the E-Switch parameters by port id.
1800 * Device port id is valid, skip check. This flag is useful
1801 * when trials are performed from probing and device is not
1802 * flagged as valid yet (in attaching process).
1803 * @param[out] es_domain_id
1804 * E-Switch domain id.
1805 * @param[out] es_port_id
1806 * The port id of the port in the E-Switch.
1809 * pointer to device private data structure containing data needed
1810 * on success, NULL otherwise and rte_errno is set.
1813 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
1815 struct rte_eth_dev *dev;
1816 struct mlx5_priv *priv;
1818 if (port >= RTE_MAX_ETHPORTS) {
1822 if (!valid && !rte_eth_dev_is_valid_port(port)) {
1826 dev = &rte_eth_devices[port];
1827 priv = dev->data->dev_private;
1828 if (!(priv->representor || priv->master)) {
1836 * Get the E-Switch parameters by device instance.
1840 * @param[out] es_domain_id
1841 * E-Switch domain id.
1842 * @param[out] es_port_id
1843 * The port id of the port in the E-Switch.
1846 * pointer to device private data structure containing data needed
1847 * on success, NULL otherwise and rte_errno is set.
1850 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
1852 struct mlx5_priv *priv;
1854 priv = dev->data->dev_private;
1855 if (!(priv->representor || priv->master)) {
1863 * Get switch information associated with network interface.
1866 * Network interface index.
1868 * Switch information object, populated in case of success.
1871 * 0 on success, a negative errno value otherwise and rte_errno is set.
1874 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1876 char ifname[IF_NAMESIZE];
1877 char port_name[IF_NAMESIZE];
1879 struct mlx5_switch_info data = {
1882 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1887 bool port_switch_id_set = false;
1888 bool device_dir = false;
1892 if (!if_indextoname(ifindex, ifname)) {
1897 MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1899 MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1901 MKSTR(pci_device, "/sys/class/net/%s/device",
1904 file = fopen(phys_port_name, "rb");
1906 ret = fscanf(file, "%s", port_name);
1909 mlx5_translate_port_name(port_name, &data);
1911 file = fopen(phys_switch_id, "rb");
1916 port_switch_id_set =
1917 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1920 dir = opendir(pci_device);
1925 if (port_switch_id_set) {
1926 /* We have some E-Switch configuration. */
1927 mlx5_sysfs_check_switch_info(device_dir, &data);
1930 assert(!(data.master && data.representor));
1931 if (data.master && data.representor) {
1932 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1933 " and as representor", ifindex);
1941 * Analyze gathered port parameters via Netlink to recognize master
1942 * and representor devices for E-Switch configuration.
1944 * @param[in] num_vf_set
1945 * flag of presence of number of VFs port attribute.
1946 * @param[inout] switch_info
1947 * Port information, including port name as a number and port name
1948 * type if recognized
1951 * master and representor flags are set in switch_info according to
1952 * recognized parameters (if any).
1955 mlx5_nl_check_switch_info(bool num_vf_set,
1956 struct mlx5_switch_info *switch_info)
1958 switch (switch_info->name_type) {
1959 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1961 * Name is not recognized, assume the master,
1962 * check the number of VFs key presence.
1964 switch_info->master = num_vf_set;
1966 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1968 * Name is not set, this assumes the legacy naming
1969 * schema for master, just check if there is a
1970 * number of VFs key.
1972 switch_info->master = num_vf_set;
1974 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1975 /* New uplink naming schema recognized. */
1976 switch_info->master = 1;
1978 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1979 /* Legacy representors naming schema. */
1980 switch_info->representor = !num_vf_set;
1982 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1983 /* New representors naming schema. */
1984 switch_info->representor = 1;
1990 * Analyze gathered port parameters via sysfs to recognize master
1991 * and representor devices for E-Switch configuration.
1993 * @param[in] device_dir
1994 * flag of presence of "device" directory under port device key.
1995 * @param[inout] switch_info
1996 * Port information, including port name as a number and port name
1997 * type if recognized
2000 * master and representor flags are set in switch_info according to
2001 * recognized parameters (if any).
2004 mlx5_sysfs_check_switch_info(bool device_dir,
2005 struct mlx5_switch_info *switch_info)
2007 switch (switch_info->name_type) {
2008 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
2010 * Name is not recognized, assume the master,
2011 * check the device directory presence.
2013 switch_info->master = device_dir;
2015 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
2017 * Name is not set, this assumes the legacy naming
2018 * schema for master, just check if there is
2019 * a device directory.
2021 switch_info->master = device_dir;
2023 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
2024 /* New uplink naming schema recognized. */
2025 switch_info->master = 1;
2027 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
2028 /* Legacy representors naming schema. */
2029 switch_info->representor = !device_dir;
2031 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
2032 /* New representors naming schema. */
2033 switch_info->representor = 1;
2039 * Extract port name, as a number, from sysfs or netlink information.
2041 * @param[in] port_name_in
2042 * String representing the port name.
2043 * @param[out] port_info_out
2044 * Port information, including port name as a number and port name
2045 * type if recognized
2048 * port_name field set according to recognized name format.
2051 mlx5_translate_port_name(const char *port_name_in,
2052 struct mlx5_switch_info *port_info_out)
2054 char pf_c1, pf_c2, vf_c1, vf_c2;
2059 * Check for port-name as a string of the form pf0vf0
2060 * (support kernel ver >= 5.0 or OFED ver >= 4.6).
2062 sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
2063 &pf_c1, &pf_c2, &port_info_out->pf_num,
2064 &vf_c1, &vf_c2, &port_info_out->port_name);
2065 if (sc_items == 6 &&
2066 pf_c1 == 'p' && pf_c2 == 'f' &&
2067 vf_c1 == 'v' && vf_c2 == 'f') {
2068 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
2072 * Check for port-name as a string of the form p0
2073 * (support kernel ver >= 5.0, or OFED ver >= 4.6).
2075 sc_items = sscanf(port_name_in, "%c%d",
2076 &pf_c1, &port_info_out->port_name);
2077 if (sc_items == 2 && pf_c1 == 'p') {
2078 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
2081 /* Check for port-name as a number (support kernel ver < 5.0 */
2083 port_info_out->port_name = strtol(port_name_in, &end, 0);
2085 (size_t)(end - port_name_in) == strlen(port_name_in)) {
2086 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
2089 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
2094 * DPDK callback to retrieve plug-in module EEPROM information (type and size).
2097 * Pointer to Ethernet device structure.
2098 * @param[out] modinfo
2099 * Storage for plug-in module EEPROM information.
2102 * 0 on success, a negative errno value otherwise and rte_errno is set.
2105 mlx5_get_module_info(struct rte_eth_dev *dev,
2106 struct rte_eth_dev_module_info *modinfo)
2108 struct ethtool_modinfo info = {
2109 .cmd = ETHTOOL_GMODULEINFO,
2111 struct ifreq ifr = (struct ifreq) {
2112 .ifr_data = (void *)&info,
2116 if (!dev || !modinfo) {
2117 DRV_LOG(WARNING, "missing argument, cannot get module info");
2121 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2123 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2124 dev->data->port_id, strerror(rte_errno));
2127 modinfo->type = info.type;
2128 modinfo->eeprom_len = info.eeprom_len;
2133 * DPDK callback to retrieve plug-in module EEPROM data.
2136 * Pointer to Ethernet device structure.
2138 * Storage for plug-in module EEPROM data.
2141 * 0 on success, a negative errno value otherwise and rte_errno is set.
2143 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
2144 struct rte_dev_eeprom_info *info)
2146 struct ethtool_eeprom *eeprom;
2150 if (!dev || !info) {
2151 DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
2155 eeprom = rte_calloc(__func__, 1,
2156 (sizeof(struct ethtool_eeprom) + info->length), 0);
2158 DRV_LOG(WARNING, "port %u cannot allocate memory for "
2159 "eeprom data", dev->data->port_id);
2163 eeprom->cmd = ETHTOOL_GMODULEEEPROM;
2164 eeprom->offset = info->offset;
2165 eeprom->len = info->length;
2166 ifr = (struct ifreq) {
2167 .ifr_data = (void *)eeprom,
2169 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2171 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2172 dev->data->port_id, strerror(rte_errno));
2174 rte_memcpy(info->data, eeprom->data, info->length);
2180 * DPDK callback to retrieve hairpin capabilities.
2183 * Pointer to Ethernet device structure.
2185 * Storage for hairpin capability data.
2188 * 0 on success, a negative errno value otherwise and rte_errno is set.
2190 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
2191 struct rte_eth_hairpin_cap *cap)
2193 struct mlx5_priv *priv = dev->data->dev_private;
2195 if (priv->sh->devx == 0) {
2196 rte_errno = ENOTSUP;
2199 cap->max_nb_queues = UINT16_MAX;
2200 cap->max_rx_2_tx = 1;
2201 cap->max_tx_2_rx = 1;
2202 cap->max_nb_desc = 8192;