1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox.
18 #include <sys/ioctl.h>
19 #include <sys/socket.h>
20 #include <sys/utsname.h>
21 #include <netinet/in.h>
22 #include <linux/ethtool.h>
23 #include <linux/sockios.h>
24 #include <linux/version.h>
29 #include <rte_atomic.h>
30 #include <rte_ethdev_driver.h>
31 #include <rte_bus_pci.h>
33 #include <rte_common.h>
34 #include <rte_interrupts.h>
35 #include <rte_alarm.h>
36 #include <rte_malloc.h>
39 #include "mlx5_glue.h"
40 #include "mlx5_rxtx.h"
41 #include "mlx5_utils.h"
43 /* Add defines in case the running kernel is not the same as user headers. */
44 #ifndef ETHTOOL_GLINKSETTINGS
45 struct ethtool_link_settings {
54 uint8_t eth_tp_mdix_ctrl;
55 int8_t link_mode_masks_nwords;
57 uint32_t link_mode_masks[];
60 #define ETHTOOL_GLINKSETTINGS 0x0000004c
61 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
62 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
63 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
64 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
65 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
66 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
67 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
68 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
69 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
70 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
71 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
72 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
73 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
74 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
75 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
76 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
78 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
79 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
80 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
81 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
83 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
84 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
85 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
87 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
88 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
89 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
90 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
91 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
95 * Get interface name from private structure.
98 * Pointer to private structure.
100 * Interface name output buffer.
103 * 0 on success, -1 on failure and errno is set.
106 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
110 unsigned int dev_type = 0;
111 unsigned int dev_port_prev = ~0u;
112 char match[IF_NAMESIZE] = "";
115 MKSTR(path, "%s/device/net", priv->ibdev_path);
121 while ((dent = readdir(dir)) != NULL) {
122 char *name = dent->d_name;
124 unsigned int dev_port;
127 if ((name[0] == '.') &&
128 ((name[1] == '\0') ||
129 ((name[1] == '.') && (name[2] == '\0'))))
132 MKSTR(path, "%s/device/net/%s/%s",
133 priv->ibdev_path, name,
134 (dev_type ? "dev_id" : "dev_port"));
136 file = fopen(path, "rb");
141 * Switch to dev_id when dev_port does not exist as
142 * is the case with Linux kernel versions < 3.15.
153 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
158 * Switch to dev_id when dev_port returns the same value for
159 * all ports. May happen when using a MOFED release older than
160 * 3.0 with a Linux kernel >= 3.15.
162 if (dev_port == dev_port_prev)
164 dev_port_prev = dev_port;
165 if (dev_port == (priv->port - 1u))
166 snprintf(match, sizeof(match), "%s", name);
169 if (match[0] == '\0')
171 strncpy(*ifname, match, sizeof(*ifname));
176 * Check if the counter is located on ib counters file.
182 * 1 if counter is located on ib counters file , 0 otherwise.
185 priv_is_ib_cntr(const char *cntr)
187 if (!strcmp(cntr, "out_of_buffer"))
193 * Read from sysfs entry.
196 * Pointer to private structure.
198 * Entry name relative to sysfs path.
200 * Data output buffer.
205 * 0 on success, -1 on failure and errno is set.
208 priv_sysfs_read(const struct priv *priv, const char *entry,
209 char *buf, size_t size)
211 char ifname[IF_NAMESIZE];
216 if (priv_get_ifname(priv, &ifname))
219 if (priv_is_ib_cntr(entry)) {
220 MKSTR(path, "%s/ports/1/hw_counters/%s",
221 priv->ibdev_path, entry);
222 file = fopen(path, "rb");
224 MKSTR(path, "%s/device/net/%s/%s",
225 priv->ibdev_path, ifname, entry);
226 file = fopen(path, "rb");
230 ret = fread(buf, 1, size, file);
232 if (((size_t)ret < size) && (ferror(file)))
242 * Write to sysfs entry.
245 * Pointer to private structure.
247 * Entry name relative to sysfs path.
254 * 0 on success, -1 on failure and errno is set.
257 priv_sysfs_write(const struct priv *priv, const char *entry,
258 char *buf, size_t size)
260 char ifname[IF_NAMESIZE];
265 if (priv_get_ifname(priv, &ifname))
268 MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
270 file = fopen(path, "wb");
273 ret = fwrite(buf, 1, size, file);
275 if (((size_t)ret < size) || (ferror(file)))
285 * Get unsigned long sysfs property.
288 * Pointer to private structure.
290 * Entry name relative to sysfs path.
292 * Value output buffer.
295 * 0 on success, -1 on failure and errno is set.
298 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
301 unsigned long value_ret;
304 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
306 DEBUG("cannot read %s value from sysfs: %s",
307 name, strerror(errno));
310 value_str[ret] = '\0';
312 value_ret = strtoul(value_str, NULL, 0);
314 DEBUG("invalid %s value `%s': %s", name, value_str,
323 * Set unsigned long sysfs property.
326 * Pointer to private structure.
328 * Entry name relative to sysfs path.
333 * 0 on success, -1 on failure and errno is set.
336 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
339 MKSTR(value_str, "%lu", value);
341 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
343 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
344 name, value_str, value, strerror(errno));
351 * Perform ifreq ioctl() on associated Ethernet device.
354 * Pointer to private structure.
356 * Request number to pass to ioctl().
358 * Interface request structure output buffer.
361 * 0 on success, -1 on failure and errno is set.
364 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
366 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
371 if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
372 ret = ioctl(sock, req, ifr);
378 * Return the number of active VFs for the current device.
381 * Pointer to private structure.
382 * @param[out] num_vfs
383 * Number of active VFs.
386 * 0 on success, -1 on failure and errno is set.
389 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
391 /* The sysfs entry name depends on the operating system. */
392 const char **name = (const char *[]){
393 "device/sriov_numvfs",
394 "device/mlx5_num_vfs",
400 unsigned long ulong_num_vfs;
402 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
404 *num_vfs = ulong_num_vfs;
405 } while (*(++name) && ret);
413 * Pointer to private structure.
415 * MTU value output buffer.
418 * 0 on success, -1 on failure and errno is set.
421 priv_get_mtu(struct priv *priv, uint16_t *mtu)
423 unsigned long ulong_mtu;
425 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
432 * Read device counter from sysfs.
435 * Pointer to private structure.
439 * Counter output buffer.
442 * 0 on success, -1 on failure and errno is set.
445 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
447 unsigned long ulong_ctr;
449 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
459 * Pointer to private structure.
464 * 0 on success, -1 on failure and errno is set.
467 priv_set_mtu(struct priv *priv, uint16_t mtu)
471 if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
472 priv_get_mtu(priv, &new_mtu))
484 * Pointer to private structure.
486 * Bitmask for flags that must remain untouched.
488 * Bitmask for flags to modify.
491 * 0 on success, -1 on failure and errno is set.
494 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
498 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
501 tmp |= (flags & (~keep));
502 return priv_set_sysfs_ulong(priv, "flags", tmp);
506 * Ethernet device configuration.
508 * Prepare the driver for a given number of TX and RX queues.
511 * Pointer to Ethernet device structure.
514 * 0 on success, errno value on failure.
517 dev_configure(struct rte_eth_dev *dev)
519 struct priv *priv = dev->data->dev_private;
520 unsigned int rxqs_n = dev->data->nb_rx_queues;
521 unsigned int txqs_n = dev->data->nb_tx_queues;
524 unsigned int reta_idx_n;
525 const uint8_t use_app_rss_key =
526 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
527 uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv);
528 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
529 uint64_t supp_rx_offloads =
530 (mlx5_priv_get_rx_port_offloads(priv) |
531 mlx5_priv_get_rx_queue_offloads(priv));
532 uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
534 if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
535 ERROR("Some Tx offloads are not supported "
536 "requested 0x%" PRIx64 " supported 0x%" PRIx64,
537 tx_offloads, supp_tx_offloads);
540 if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
541 ERROR("Some Rx offloads are not supported "
542 "requested 0x%" PRIx64 " supported 0x%" PRIx64,
543 rx_offloads, supp_rx_offloads);
546 if (use_app_rss_key &&
547 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
548 rss_hash_default_key_len)) {
549 /* MLX5 RSS only support 40bytes key. */
552 priv->rss_conf.rss_key =
553 rte_realloc(priv->rss_conf.rss_key,
554 rss_hash_default_key_len, 0);
555 if (!priv->rss_conf.rss_key) {
556 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
559 memcpy(priv->rss_conf.rss_key,
561 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
562 rss_hash_default_key,
563 rss_hash_default_key_len);
564 priv->rss_conf.rss_key_len = rss_hash_default_key_len;
565 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
566 priv->rxqs = (void *)dev->data->rx_queues;
567 priv->txqs = (void *)dev->data->tx_queues;
568 if (txqs_n != priv->txqs_n) {
569 INFO("%p: TX queues number update: %u -> %u",
570 (void *)dev, priv->txqs_n, txqs_n);
571 priv->txqs_n = txqs_n;
573 if (rxqs_n > priv->config.ind_table_max_size) {
574 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
577 if (rxqs_n == priv->rxqs_n)
579 INFO("%p: RX queues number update: %u -> %u",
580 (void *)dev, priv->rxqs_n, rxqs_n);
581 priv->rxqs_n = rxqs_n;
582 /* If the requested number of RX queues is not a power of two, use the
583 * maximum indirection table size for better balancing.
584 * The result is always rounded to the next power of two. */
585 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
586 priv->config.ind_table_max_size :
588 if (priv_rss_reta_index_resize(priv, reta_idx_n))
590 /* When the number of RX queues is not a power of two, the remaining
591 * table entries are padded with reused WQs and hashes are not spread
593 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
594 (*priv->reta_idx)[i] = j;
602 * DPDK callback for Ethernet device configuration.
605 * Pointer to Ethernet device structure.
608 * 0 on success, negative errno value on failure.
611 mlx5_dev_configure(struct rte_eth_dev *dev)
613 struct priv *priv = dev->data->dev_private;
617 ret = dev_configure(dev);
624 * DPDK callback to get information about the device.
627 * Pointer to Ethernet device structure.
629 * Info structure output buffer.
632 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
634 struct priv *priv = dev->data->dev_private;
635 struct mlx5_dev_config *config = &priv->config;
637 char ifname[IF_NAMESIZE];
639 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
642 /* FIXME: we should ask the device for these values. */
643 info->min_rx_bufsize = 32;
644 info->max_rx_pktlen = 65536;
646 * Since we need one CQ per QP, the limit is the minimum number
647 * between the two values.
649 max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
650 priv->device_attr.orig_attr.max_qp);
651 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
654 info->max_rx_queues = max;
655 info->max_tx_queues = max;
656 info->max_mac_addrs = RTE_DIM(priv->mac);
657 info->rx_queue_offload_capa =
658 mlx5_priv_get_rx_queue_offloads(priv);
659 info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) |
660 info->rx_queue_offload_capa);
661 info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv);
662 if (priv_get_ifname(priv, &ifname) == 0)
663 info->if_index = if_nametoindex(ifname);
664 info->reta_size = priv->reta_idx_n ?
665 priv->reta_idx_n : config->ind_table_max_size;
666 info->hash_key_size = priv->rss_conf.rss_key_len;
667 info->speed_capa = priv->link_speed_capa;
668 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
673 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
675 static const uint32_t ptypes[] = {
676 /* refers to rxq_cq_to_pkt_type() */
678 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
679 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
680 RTE_PTYPE_L4_NONFRAG,
684 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
685 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
686 RTE_PTYPE_INNER_L4_NONFRAG,
687 RTE_PTYPE_INNER_L4_FRAG,
688 RTE_PTYPE_INNER_L4_TCP,
689 RTE_PTYPE_INNER_L4_UDP,
693 if (dev->rx_pkt_burst == mlx5_rx_burst ||
694 dev->rx_pkt_burst == mlx5_rx_burst_vec)
700 * DPDK callback to retrieve physical link information.
703 * Pointer to Ethernet device structure.
704 * @param wait_to_complete
705 * Wait for request completion (ignored).
708 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
710 struct priv *priv = dev->data->dev_private;
711 struct ethtool_cmd edata = {
712 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
715 struct rte_eth_link dev_link;
718 /* priv_lock() is not taken to allow concurrent calls. */
720 (void)wait_to_complete;
721 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
722 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
725 memset(&dev_link, 0, sizeof(dev_link));
726 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
727 (ifr.ifr_flags & IFF_RUNNING));
728 ifr.ifr_data = (void *)&edata;
729 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
730 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
734 link_speed = ethtool_cmd_speed(&edata);
735 if (link_speed == -1)
736 dev_link.link_speed = 0;
738 dev_link.link_speed = link_speed;
739 priv->link_speed_capa = 0;
740 if (edata.supported & SUPPORTED_Autoneg)
741 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
742 if (edata.supported & (SUPPORTED_1000baseT_Full |
743 SUPPORTED_1000baseKX_Full))
744 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
745 if (edata.supported & SUPPORTED_10000baseKR_Full)
746 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
747 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
748 SUPPORTED_40000baseCR4_Full |
749 SUPPORTED_40000baseSR4_Full |
750 SUPPORTED_40000baseLR4_Full))
751 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
752 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
753 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
754 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
755 ETH_LINK_SPEED_FIXED);
756 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
757 /* Link status changed. */
758 dev->data->dev_link = dev_link;
761 /* Link status is still the same. */
766 * Retrieve physical link information (unlocked version using new ioctl).
769 * Pointer to Ethernet device structure.
770 * @param wait_to_complete
771 * Wait for request completion (ignored).
774 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
776 struct priv *priv = dev->data->dev_private;
777 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
779 struct rte_eth_link dev_link;
782 (void)wait_to_complete;
783 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
784 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
787 memset(&dev_link, 0, sizeof(dev_link));
788 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
789 (ifr.ifr_flags & IFF_RUNNING));
790 ifr.ifr_data = (void *)&gcmd;
791 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
792 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
796 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
798 alignas(struct ethtool_link_settings)
799 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
800 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
801 struct ethtool_link_settings *ecmd = (void *)data;
804 ifr.ifr_data = (void *)ecmd;
805 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
806 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
810 dev_link.link_speed = ecmd->speed;
811 sc = ecmd->link_mode_masks[0] |
812 ((uint64_t)ecmd->link_mode_masks[1] << 32);
813 priv->link_speed_capa = 0;
814 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
815 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
816 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
817 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
818 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
819 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
820 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
821 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
822 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
823 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
824 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
825 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
826 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
827 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
828 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
829 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
830 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
831 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
832 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
833 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
834 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
835 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
836 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
837 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
838 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
839 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
840 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
841 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
842 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
843 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
844 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
845 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
846 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
847 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
848 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
849 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
850 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
851 ETH_LINK_SPEED_FIXED);
852 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
853 /* Link status changed. */
854 dev->data->dev_link = dev_link;
857 /* Link status is still the same. */
862 * Enable receiving and transmitting traffic.
865 * Pointer to private structure.
868 priv_link_start(struct priv *priv)
870 struct rte_eth_dev *dev = priv->dev;
873 dev->tx_pkt_burst = priv_select_tx_function(priv, dev);
874 dev->rx_pkt_burst = priv_select_rx_function(priv, dev);
875 err = priv_dev_traffic_enable(priv, dev);
877 ERROR("%p: error occurred while configuring control flows: %s",
878 (void *)priv, strerror(err));
879 err = priv_flow_start(priv, &priv->flows);
881 ERROR("%p: error occurred while configuring flows: %s",
882 (void *)priv, strerror(err));
886 * Disable receiving and transmitting traffic.
889 * Pointer to private structure.
892 priv_link_stop(struct priv *priv)
894 struct rte_eth_dev *dev = priv->dev;
896 priv_flow_stop(priv, &priv->flows);
897 priv_dev_traffic_disable(priv, dev);
898 dev->rx_pkt_burst = removed_rx_burst;
899 dev->tx_pkt_burst = removed_tx_burst;
903 * Retrieve physical link information and update rx/tx_pkt_burst callbacks
907 * Pointer to private structure.
908 * @param wait_to_complete
909 * Wait for request completion (ignored).
912 priv_link_update(struct priv *priv, int wait_to_complete)
914 struct rte_eth_dev *dev = priv->dev;
915 struct utsname utsname;
918 struct rte_eth_link dev_link = dev->data->dev_link;
920 if (uname(&utsname) == -1 ||
921 sscanf(utsname.release, "%d.%d.%d",
922 &ver[0], &ver[1], &ver[2]) != 3 ||
923 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
924 ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete);
926 ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete);
927 /* If lsc interrupt is disabled, should always be ready for traffic. */
928 if (!dev->data->dev_conf.intr_conf.lsc) {
929 priv_link_start(priv);
932 /* Re-select burst callbacks only if link status has been changed. */
933 if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
934 if (dev->data->dev_link.link_status == ETH_LINK_UP)
935 priv_link_start(priv);
937 priv_link_stop(priv);
943 * Querying the link status till it changes to the desired state.
944 * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
947 * Pointer to private structure.
949 * Link desired status.
952 * 0 on success, negative errno value on failure.
955 priv_force_link_status_change(struct priv *priv, int status)
959 while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
960 priv_link_update(priv, 0);
961 if (priv->dev->data->dev_link.link_status == status)
970 * DPDK callback to retrieve physical link information.
973 * Pointer to Ethernet device structure.
974 * @param wait_to_complete
975 * Wait for request completion (ignored).
978 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
980 struct priv *priv = dev->data->dev_private;
984 ret = priv_link_update(priv, wait_to_complete);
990 * DPDK callback to change the MTU.
993 * Pointer to Ethernet device structure.
998 * 0 on success, negative errno value on failure.
1001 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1003 struct priv *priv = dev->data->dev_private;
1008 ret = priv_get_mtu(priv, &kern_mtu);
1011 /* Set kernel interface MTU first. */
1012 ret = priv_set_mtu(priv, mtu);
1015 ret = priv_get_mtu(priv, &kern_mtu);
1018 if (kern_mtu == mtu) {
1020 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
1026 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
1034 * DPDK callback to get flow control status.
1037 * Pointer to Ethernet device structure.
1038 * @param[out] fc_conf
1039 * Flow control output buffer.
1042 * 0 on success, negative errno value on failure.
1045 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1047 struct priv *priv = dev->data->dev_private;
1049 struct ethtool_pauseparam ethpause = {
1050 .cmd = ETHTOOL_GPAUSEPARAM
1054 ifr.ifr_data = (void *)ðpause;
1056 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1058 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
1064 fc_conf->autoneg = ethpause.autoneg;
1065 if (ethpause.rx_pause && ethpause.tx_pause)
1066 fc_conf->mode = RTE_FC_FULL;
1067 else if (ethpause.rx_pause)
1068 fc_conf->mode = RTE_FC_RX_PAUSE;
1069 else if (ethpause.tx_pause)
1070 fc_conf->mode = RTE_FC_TX_PAUSE;
1072 fc_conf->mode = RTE_FC_NONE;
1082 * DPDK callback to modify flow control parameters.
1085 * Pointer to Ethernet device structure.
1086 * @param[in] fc_conf
1087 * Flow control parameters.
1090 * 0 on success, negative errno value on failure.
1093 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1095 struct priv *priv = dev->data->dev_private;
1097 struct ethtool_pauseparam ethpause = {
1098 .cmd = ETHTOOL_SPAUSEPARAM
1102 ifr.ifr_data = (void *)ðpause;
1103 ethpause.autoneg = fc_conf->autoneg;
1104 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1105 (fc_conf->mode & RTE_FC_RX_PAUSE))
1106 ethpause.rx_pause = 1;
1108 ethpause.rx_pause = 0;
1110 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1111 (fc_conf->mode & RTE_FC_TX_PAUSE))
1112 ethpause.tx_pause = 1;
1114 ethpause.tx_pause = 0;
1117 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1119 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1133 * Get PCI information from struct ibv_device.
1136 * Pointer to Ethernet device structure.
1137 * @param[out] pci_addr
1138 * PCI bus address output buffer.
1141 * 0 on success, -1 on failure and errno is set.
1144 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1145 struct rte_pci_addr *pci_addr)
1149 MKSTR(path, "%s/device/uevent", device->ibdev_path);
1151 file = fopen(path, "rb");
1154 while (fgets(line, sizeof(line), file) == line) {
1155 size_t len = strlen(line);
1158 /* Truncate long lines. */
1159 if (len == (sizeof(line) - 1))
1160 while (line[(len - 1)] != '\n') {
1164 line[(len - 1)] = ret;
1166 /* Extract information. */
1169 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1173 &pci_addr->function) == 4) {
1183 * Update the link status.
1186 * Pointer to private structure.
1189 * Zero if the callback process can be called immediately.
1192 priv_link_status_update(struct priv *priv)
1194 struct rte_eth_link *link = &priv->dev->data->dev_link;
1196 priv_link_update(priv, 0);
1197 if (((link->link_speed == 0) && link->link_status) ||
1198 ((link->link_speed != 0) && !link->link_status)) {
1200 * Inconsistent status. Event likely occurred before the
1201 * kernel netdevice exposes the new status.
1203 if (!priv->pending_alarm) {
1204 priv->pending_alarm = 1;
1205 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1206 mlx5_dev_link_status_handler,
1210 } else if (unlikely(priv->pending_alarm)) {
1211 /* Link interrupt occurred while alarm is already scheduled. */
1212 priv->pending_alarm = 0;
1213 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
1219 * Device status handler.
1222 * Pointer to private structure.
1224 * Pointer to event flags holder.
1227 * Events bitmap of callback process which can be called immediately.
1230 priv_dev_status_handler(struct priv *priv)
1232 struct ibv_async_event event;
1235 /* Read all message and acknowledge them. */
1237 if (mlx5_glue->get_async_event(priv->ctx, &event))
1239 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1240 event.event_type == IBV_EVENT_PORT_ERR) &&
1241 (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1242 ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1243 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1244 priv->dev->data->dev_conf.intr_conf.rmv == 1)
1245 ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1247 DEBUG("event type %d on port %d not handled",
1248 event.event_type, event.element.port_num);
1249 mlx5_glue->ack_async_event(&event);
1251 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1252 if (priv_link_status_update(priv))
1253 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1258 * Handle delayed link status event.
1261 * Registered argument.
1264 mlx5_dev_link_status_handler(void *arg)
1266 struct rte_eth_dev *dev = arg;
1267 struct priv *priv = dev->data->dev_private;
1270 while (!priv_trylock(priv)) {
1271 /* Alarm is being canceled. */
1272 if (priv->pending_alarm == 0)
1276 priv->pending_alarm = 0;
1277 ret = priv_link_status_update(priv);
1280 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1284 * Handle interrupts from the NIC.
1286 * @param[in] intr_handle
1287 * Interrupt handler.
1289 * Callback argument.
1292 mlx5_dev_interrupt_handler(void *cb_arg)
1294 struct rte_eth_dev *dev = cb_arg;
1295 struct priv *priv = dev->data->dev_private;
1299 events = priv_dev_status_handler(priv);
1301 if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1302 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1303 if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1304 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1308 * Handle interrupts from the socket.
1311 * Callback argument.
1314 mlx5_dev_handler_socket(void *cb_arg)
1316 struct rte_eth_dev *dev = cb_arg;
1317 struct priv *priv = dev->data->dev_private;
1320 priv_socket_handle(priv);
1325 * Uninstall interrupt handler.
1328 * Pointer to private structure.
1330 * Pointer to the rte_eth_dev structure.
1333 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1335 if (dev->data->dev_conf.intr_conf.lsc ||
1336 dev->data->dev_conf.intr_conf.rmv)
1337 rte_intr_callback_unregister(&priv->intr_handle,
1338 mlx5_dev_interrupt_handler, dev);
1339 if (priv->primary_socket)
1340 rte_intr_callback_unregister(&priv->intr_handle_socket,
1341 mlx5_dev_handler_socket, dev);
1342 if (priv->pending_alarm) {
1343 priv->pending_alarm = 0;
1344 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1346 priv->intr_handle.fd = 0;
1347 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1348 priv->intr_handle_socket.fd = 0;
1349 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1353 * Install interrupt handler.
1356 * Pointer to private structure.
1358 * Pointer to the rte_eth_dev structure.
1361 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1365 assert(priv->ctx->async_fd > 0);
1366 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1367 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1369 INFO("failed to change file descriptor async event queue");
1370 dev->data->dev_conf.intr_conf.lsc = 0;
1371 dev->data->dev_conf.intr_conf.rmv = 0;
1373 if (dev->data->dev_conf.intr_conf.lsc ||
1374 dev->data->dev_conf.intr_conf.rmv) {
1375 priv->intr_handle.fd = priv->ctx->async_fd;
1376 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1377 rte_intr_callback_register(&priv->intr_handle,
1378 mlx5_dev_interrupt_handler, dev);
1381 rc = priv_socket_init(priv);
1382 if (!rc && priv->primary_socket) {
1383 priv->intr_handle_socket.fd = priv->primary_socket;
1384 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1385 rte_intr_callback_register(&priv->intr_handle_socket,
1386 mlx5_dev_handler_socket, dev);
1391 * Change the link state (UP / DOWN).
1394 * Pointer to private data structure.
1396 * Nonzero for link up, otherwise link down.
1399 * 0 on success, errno value on failure.
1402 priv_dev_set_link(struct priv *priv, int up)
1404 return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP);
1408 * DPDK callback to bring the link DOWN.
1411 * Pointer to Ethernet device structure.
1414 * 0 on success, errno value on failure.
1417 mlx5_set_link_down(struct rte_eth_dev *dev)
1419 struct priv *priv = dev->data->dev_private;
1423 err = priv_dev_set_link(priv, 0);
1429 * DPDK callback to bring the link UP.
1432 * Pointer to Ethernet device structure.
1435 * 0 on success, errno value on failure.
1438 mlx5_set_link_up(struct rte_eth_dev *dev)
1440 struct priv *priv = dev->data->dev_private;
1444 err = priv_dev_set_link(priv, 1);
1450 * Configure the TX function to use.
1453 * Pointer to private data structure.
1455 * Pointer to rte_eth_dev structure.
1458 * Pointer to selected Tx burst function.
1461 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1463 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1464 struct mlx5_dev_config *config = &priv->config;
1465 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1466 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1467 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1468 DEV_TX_OFFLOAD_GRE_TNL_TSO));
1469 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1471 assert(priv != NULL);
1472 /* Select appropriate TX function. */
1473 if (vlan_insert || tso)
1474 return tx_pkt_burst;
1475 if (config->mps == MLX5_MPW_ENHANCED) {
1476 if (priv_check_vec_tx_support(priv, dev) > 0) {
1477 if (priv_check_raw_vec_tx_support(priv, dev) > 0)
1478 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1480 tx_pkt_burst = mlx5_tx_burst_vec;
1481 DEBUG("selected Enhanced MPW TX vectorized function");
1483 tx_pkt_burst = mlx5_tx_burst_empw;
1484 DEBUG("selected Enhanced MPW TX function");
1486 } else if (config->mps && (config->txq_inline > 0)) {
1487 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1488 DEBUG("selected MPW inline TX function");
1489 } else if (config->mps) {
1490 tx_pkt_burst = mlx5_tx_burst_mpw;
1491 DEBUG("selected MPW TX function");
1493 return tx_pkt_burst;
1497 * Configure the RX function to use.
1500 * Pointer to private data structure.
1502 * Pointer to rte_eth_dev structure.
1505 * Pointer to selected Rx burst function.
1508 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev)
1510 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1512 assert(priv != NULL);
1513 if (priv_check_vec_rx_support(priv) > 0) {
1514 rx_pkt_burst = mlx5_rx_burst_vec;
1515 DEBUG("selected RX vectorized function");
1517 return rx_pkt_burst;
1521 * Check if mlx5 device was removed.
1524 * Pointer to Ethernet device structure.
1527 * 1 when device is removed, otherwise 0.
1530 mlx5_is_removed(struct rte_eth_dev *dev)
1532 struct ibv_device_attr device_attr;
1533 struct priv *priv = dev->data->dev_private;
1535 if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)