4 * Copyright 2015 6WIND S.A.
5 * Copyright 2015 Mellanox.
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8 * modification, are permitted provided that the following conditions
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44 #include <sys/ioctl.h>
45 #include <sys/socket.h>
46 #include <sys/utsname.h>
47 #include <netinet/in.h>
48 #include <linux/ethtool.h>
49 #include <linux/sockios.h>
50 #include <linux/version.h>
53 /* DPDK headers don't like -pedantic. */
55 #pragma GCC diagnostic ignored "-Wpedantic"
57 #include <rte_atomic.h>
58 #include <rte_ethdev.h>
60 #include <rte_common.h>
61 #include <rte_interrupts.h>
62 #include <rte_alarm.h>
63 #include <rte_malloc.h>
65 #pragma GCC diagnostic error "-Wpedantic"
69 #include "mlx5_rxtx.h"
70 #include "mlx5_utils.h"
72 /* Add defines in case the running kernel is not the same as user headers. */
73 #ifndef ETHTOOL_GLINKSETTINGS
74 struct ethtool_link_settings {
83 uint8_t eth_tp_mdix_ctrl;
84 int8_t link_mode_masks_nwords;
86 uint32_t link_mode_masks[];
89 #define ETHTOOL_GLINKSETTINGS 0x0000004c
90 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
91 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
92 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
93 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
94 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
95 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
96 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
97 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
98 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
99 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
100 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
101 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
102 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
103 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
104 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
105 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
107 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
108 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
109 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
110 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
112 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
113 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
114 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
116 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
117 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
118 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
119 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
120 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
124 * Return private structure associated with an Ethernet device.
127 * Pointer to Ethernet device structure.
130 * Pointer to private structure.
133 mlx5_get_priv(struct rte_eth_dev *dev)
135 struct mlx5_secondary_data *sd;
137 if (!mlx5_is_secondary())
138 return dev->data->dev_private;
139 sd = &mlx5_secondary_data[dev->data->port_id];
140 return sd->data.dev_private;
144 * Check if running as a secondary process.
147 * Nonzero if running as a secondary process.
150 mlx5_is_secondary(void)
152 return rte_eal_process_type() != RTE_PROC_PRIMARY;
156 * Get interface name from private structure.
159 * Pointer to private structure.
161 * Interface name output buffer.
164 * 0 on success, -1 on failure and errno is set.
167 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
171 unsigned int dev_type = 0;
172 unsigned int dev_port_prev = ~0u;
173 char match[IF_NAMESIZE] = "";
176 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
182 while ((dent = readdir(dir)) != NULL) {
183 char *name = dent->d_name;
185 unsigned int dev_port;
188 if ((name[0] == '.') &&
189 ((name[1] == '\0') ||
190 ((name[1] == '.') && (name[2] == '\0'))))
193 MKSTR(path, "%s/device/net/%s/%s",
194 priv->ctx->device->ibdev_path, name,
195 (dev_type ? "dev_id" : "dev_port"));
197 file = fopen(path, "rb");
202 * Switch to dev_id when dev_port does not exist as
203 * is the case with Linux kernel versions < 3.15.
214 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
219 * Switch to dev_id when dev_port returns the same value for
220 * all ports. May happen when using a MOFED release older than
221 * 3.0 with a Linux kernel >= 3.15.
223 if (dev_port == dev_port_prev)
225 dev_port_prev = dev_port;
226 if (dev_port == (priv->port - 1u))
227 snprintf(match, sizeof(match), "%s", name);
230 if (match[0] == '\0')
232 strncpy(*ifname, match, sizeof(*ifname));
237 * Read from sysfs entry.
240 * Pointer to private structure.
242 * Entry name relative to sysfs path.
244 * Data output buffer.
249 * 0 on success, -1 on failure and errno is set.
252 priv_sysfs_read(const struct priv *priv, const char *entry,
253 char *buf, size_t size)
255 char ifname[IF_NAMESIZE];
260 if (priv_get_ifname(priv, &ifname))
263 MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
266 file = fopen(path, "rb");
269 ret = fread(buf, 1, size, file);
271 if (((size_t)ret < size) && (ferror(file)))
281 * Write to sysfs entry.
284 * Pointer to private structure.
286 * Entry name relative to sysfs path.
293 * 0 on success, -1 on failure and errno is set.
296 priv_sysfs_write(const struct priv *priv, const char *entry,
297 char *buf, size_t size)
299 char ifname[IF_NAMESIZE];
304 if (priv_get_ifname(priv, &ifname))
307 MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
310 file = fopen(path, "wb");
313 ret = fwrite(buf, 1, size, file);
315 if (((size_t)ret < size) || (ferror(file)))
325 * Get unsigned long sysfs property.
328 * Pointer to private structure.
330 * Entry name relative to sysfs path.
332 * Value output buffer.
335 * 0 on success, -1 on failure and errno is set.
338 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
341 unsigned long value_ret;
344 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
346 DEBUG("cannot read %s value from sysfs: %s",
347 name, strerror(errno));
350 value_str[ret] = '\0';
352 value_ret = strtoul(value_str, NULL, 0);
354 DEBUG("invalid %s value `%s': %s", name, value_str,
363 * Set unsigned long sysfs property.
366 * Pointer to private structure.
368 * Entry name relative to sysfs path.
373 * 0 on success, -1 on failure and errno is set.
376 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
379 MKSTR(value_str, "%lu", value);
381 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
383 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
384 name, value_str, value, strerror(errno));
391 * Perform ifreq ioctl() on associated Ethernet device.
394 * Pointer to private structure.
396 * Request number to pass to ioctl().
398 * Interface request structure output buffer.
401 * 0 on success, -1 on failure and errno is set.
404 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
406 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
411 if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
412 ret = ioctl(sock, req, ifr);
418 * Return the number of active VFs for the current device.
421 * Pointer to private structure.
422 * @param[out] num_vfs
423 * Number of active VFs.
426 * 0 on success, -1 on failure and errno is set.
429 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
431 /* The sysfs entry name depends on the operating system. */
432 const char **name = (const char *[]){
433 "device/sriov_numvfs",
434 "device/mlx5_num_vfs",
440 unsigned long ulong_num_vfs;
442 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
444 *num_vfs = ulong_num_vfs;
445 } while (*(++name) && ret);
453 * Pointer to private structure.
455 * MTU value output buffer.
458 * 0 on success, -1 on failure and errno is set.
461 priv_get_mtu(struct priv *priv, uint16_t *mtu)
463 unsigned long ulong_mtu;
465 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
475 * Pointer to private structure.
480 * 0 on success, -1 on failure and errno is set.
483 priv_set_mtu(struct priv *priv, uint16_t mtu)
487 if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
488 priv_get_mtu(priv, &new_mtu))
500 * Pointer to private structure.
502 * Bitmask for flags that must remain untouched.
504 * Bitmask for flags to modify.
507 * 0 on success, -1 on failure and errno is set.
510 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
514 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
517 tmp |= (flags & (~keep));
518 return priv_set_sysfs_ulong(priv, "flags", tmp);
522 * Ethernet device configuration.
524 * Prepare the driver for a given number of TX and RX queues.
527 * Pointer to Ethernet device structure.
530 * 0 on success, errno value on failure.
533 dev_configure(struct rte_eth_dev *dev)
535 struct priv *priv = dev->data->dev_private;
536 unsigned int rxqs_n = dev->data->nb_rx_queues;
537 unsigned int txqs_n = dev->data->nb_tx_queues;
540 unsigned int reta_idx_n;
542 priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
543 priv->rxqs = (void *)dev->data->rx_queues;
544 priv->txqs = (void *)dev->data->tx_queues;
545 if (txqs_n != priv->txqs_n) {
546 INFO("%p: TX queues number update: %u -> %u",
547 (void *)dev, priv->txqs_n, txqs_n);
548 priv->txqs_n = txqs_n;
550 if (rxqs_n > priv->ind_table_max_size) {
551 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
554 if (rxqs_n == priv->rxqs_n)
556 INFO("%p: RX queues number update: %u -> %u",
557 (void *)dev, priv->rxqs_n, rxqs_n);
558 priv->rxqs_n = rxqs_n;
559 /* If the requested number of RX queues is not a power of two, use the
560 * maximum indirection table size for better balancing.
561 * The result is always rounded to the next power of two. */
562 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
563 priv->ind_table_max_size :
565 if (priv_rss_reta_index_resize(priv, reta_idx_n))
567 /* When the number of RX queues is not a power of two, the remaining
568 * table entries are padded with reused WQs and hashes are not spread
570 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
571 (*priv->reta_idx)[i] = j;
579 * DPDK callback for Ethernet device configuration.
582 * Pointer to Ethernet device structure.
585 * 0 on success, negative errno value on failure.
588 mlx5_dev_configure(struct rte_eth_dev *dev)
590 struct priv *priv = dev->data->dev_private;
593 if (mlx5_is_secondary())
594 return -E_RTE_SECONDARY;
597 ret = dev_configure(dev);
604 * DPDK callback to get information about the device.
607 * Pointer to Ethernet device structure.
609 * Info structure output buffer.
612 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
614 struct priv *priv = mlx5_get_priv(dev);
616 char ifname[IF_NAMESIZE];
619 /* FIXME: we should ask the device for these values. */
620 info->min_rx_bufsize = 32;
621 info->max_rx_pktlen = 65536;
623 * Since we need one CQ per QP, the limit is the minimum number
624 * between the two values.
626 max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
627 priv->device_attr.max_qp : priv->device_attr.max_cq);
628 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
631 info->max_rx_queues = max;
632 info->max_tx_queues = max;
633 info->max_mac_addrs = RTE_DIM(priv->mac);
634 info->rx_offload_capa =
636 (DEV_RX_OFFLOAD_IPV4_CKSUM |
637 DEV_RX_OFFLOAD_UDP_CKSUM |
638 DEV_RX_OFFLOAD_TCP_CKSUM) :
640 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
642 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
644 info->tx_offload_capa |=
645 (DEV_TX_OFFLOAD_IPV4_CKSUM |
646 DEV_TX_OFFLOAD_UDP_CKSUM |
647 DEV_TX_OFFLOAD_TCP_CKSUM);
648 if (priv_get_ifname(priv, &ifname) == 0)
649 info->if_index = if_nametoindex(ifname);
650 /* FIXME: RETA update/query API expects the callee to know the size of
651 * the indirection table, for this PMD the size varies depending on
652 * the number of RX queues, it becomes impossible to find the correct
653 * size if it is not fixed.
654 * The API should be updated to solve this problem. */
655 info->reta_size = priv->ind_table_max_size;
656 info->hash_key_size = ((*priv->rss_conf) ?
657 (*priv->rss_conf)[0]->rss_key_len :
659 info->speed_capa = priv->link_speed_capa;
664 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
666 static const uint32_t ptypes[] = {
667 /* refers to rxq_cq_to_pkt_type() */
668 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
669 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
670 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
671 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
676 if (dev->rx_pkt_burst == mlx5_rx_burst)
682 * Retrieve physical link information (unlocked version using legacy ioctl).
685 * Pointer to Ethernet device structure.
686 * @param wait_to_complete
687 * Wait for request completion (ignored).
690 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
692 struct priv *priv = mlx5_get_priv(dev);
693 struct ethtool_cmd edata = {
694 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
697 struct rte_eth_link dev_link;
700 (void)wait_to_complete;
701 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
702 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
705 memset(&dev_link, 0, sizeof(dev_link));
706 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
707 (ifr.ifr_flags & IFF_RUNNING));
708 ifr.ifr_data = (void *)&edata;
709 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
710 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
714 link_speed = ethtool_cmd_speed(&edata);
715 if (link_speed == -1)
716 dev_link.link_speed = 0;
718 dev_link.link_speed = link_speed;
719 priv->link_speed_capa = 0;
720 if (edata.supported & SUPPORTED_Autoneg)
721 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
722 if (edata.supported & (SUPPORTED_1000baseT_Full |
723 SUPPORTED_1000baseKX_Full))
724 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
725 if (edata.supported & SUPPORTED_10000baseKR_Full)
726 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
727 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
728 SUPPORTED_40000baseCR4_Full |
729 SUPPORTED_40000baseSR4_Full |
730 SUPPORTED_40000baseLR4_Full))
731 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
732 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
733 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
734 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
735 ETH_LINK_SPEED_FIXED);
736 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
737 /* Link status changed. */
738 dev->data->dev_link = dev_link;
741 /* Link status is still the same. */
746 * Retrieve physical link information (unlocked version using new ioctl).
749 * Pointer to Ethernet device structure.
750 * @param wait_to_complete
751 * Wait for request completion (ignored).
754 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
756 struct priv *priv = mlx5_get_priv(dev);
757 struct ethtool_link_settings edata = {
758 .cmd = ETHTOOL_GLINKSETTINGS,
761 struct rte_eth_link dev_link;
764 (void)wait_to_complete;
765 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
766 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
769 memset(&dev_link, 0, sizeof(dev_link));
770 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
771 (ifr.ifr_flags & IFF_RUNNING));
772 ifr.ifr_data = (void *)&edata;
773 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
774 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
778 dev_link.link_speed = edata.speed;
779 sc = edata.link_mode_masks[0] |
780 ((uint64_t)edata.link_mode_masks[1] << 32);
781 priv->link_speed_capa = 0;
782 if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT)
783 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
784 if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT |
785 ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))
786 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
787 if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT |
788 ETHTOOL_LINK_MODE_10000baseKR_Full_BIT |
789 ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))
790 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
791 if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT |
792 ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))
793 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
794 if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT |
795 ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT |
796 ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT |
797 ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))
798 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
799 if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT |
800 ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT |
801 ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT |
802 ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))
803 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
804 if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT |
805 ETHTOOL_LINK_MODE_25000baseKR_Full_BIT |
806 ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))
807 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
808 if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT |
809 ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))
810 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
811 if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT |
812 ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT |
813 ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT |
814 ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))
815 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
816 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
817 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
818 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
819 ETH_LINK_SPEED_FIXED);
820 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
821 /* Link status changed. */
822 dev->data->dev_link = dev_link;
825 /* Link status is still the same. */
830 * DPDK callback to retrieve physical link information (unlocked version).
833 * Pointer to Ethernet device structure.
834 * @param wait_to_complete
835 * Wait for request completion (ignored).
838 mlx5_link_update_unlocked(struct rte_eth_dev *dev, int wait_to_complete)
840 struct utsname utsname;
843 if (uname(&utsname) == -1 ||
844 sscanf(utsname.release, "%d.%d.%d",
845 &ver[0], &ver[1], &ver[2]) != 3 ||
846 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
847 return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
848 return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
852 * DPDK callback to retrieve physical link information.
855 * Pointer to Ethernet device structure.
856 * @param wait_to_complete
857 * Wait for request completion (ignored).
860 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
862 struct priv *priv = mlx5_get_priv(dev);
866 ret = mlx5_link_update_unlocked(dev, wait_to_complete);
872 * DPDK callback to change the MTU.
874 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
875 * received). Use this as a hint to enable/disable scattered packets support
876 * and improve performance when not needed.
877 * Since failure is not an option, reconfiguring queues on the fly is not
881 * Pointer to Ethernet device structure.
886 * 0 on success, negative errno value on failure.
889 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
891 struct priv *priv = dev->data->dev_private;
894 uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
896 unsigned int max_frame_len;
898 int restart = priv->started;
900 if (mlx5_is_secondary())
901 return -E_RTE_SECONDARY;
904 /* Set kernel interface MTU first. */
905 if (priv_set_mtu(priv, mtu)) {
907 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
911 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
912 /* Temporarily replace RX handler with a fake one, assuming it has not
913 * been copied elsewhere. */
914 dev->rx_pkt_burst = removed_rx_burst;
915 /* Make sure everyone has left mlx5_rx_burst() and uses
916 * removed_rx_burst() instead. */
919 /* MTU does not include header and CRC. */
920 max_frame_len = ETHER_HDR_LEN + mtu + ETHER_CRC_LEN;
921 /* Check if at least one queue is going to need a SGE update. */
922 for (i = 0; i != priv->rxqs_n; ++i) {
923 struct rxq *rxq = (*priv->rxqs)[i];
925 unsigned int size = RTE_PKTMBUF_HEADROOM + max_frame_len;
930 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
931 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
933 * Determine the number of SGEs needed for a full packet
934 * and round it to the next power of two.
936 sges_n = log2above((size / mb_len) + !!(size % mb_len));
937 if (sges_n != rxq->sges_n)
941 * If all queues have the right number of SGEs, a simple rehash
942 * of their buffers is enough, otherwise SGE information can only
943 * be updated in a queue by recreating it. All resources that depend
944 * on queues (flows, indirection tables) must be recreated as well in
947 rehash = (i == priv->rxqs_n);
949 /* Clean up everything as with mlx5_dev_stop(). */
950 priv_special_flow_disable_all(priv);
951 priv_mac_addrs_disable(priv);
952 priv_destroy_hash_rxqs(priv);
953 priv_fdir_disable(priv);
954 priv_dev_interrupt_handler_uninstall(priv, dev);
957 /* Reconfigure each RX queue. */
958 for (i = 0; (i != priv->rxqs_n); ++i) {
959 struct rxq *rxq = (*priv->rxqs)[i];
960 struct rxq_ctrl *rxq_ctrl =
961 container_of(rxq, struct rxq_ctrl, rxq);
968 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
969 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
970 /* Toggle scattered support (sp) if necessary. */
971 sp = (max_frame_len > (mb_len - RTE_PKTMBUF_HEADROOM));
972 /* Provide new values to rxq_setup(). */
973 dev->data->dev_conf.rxmode.jumbo_frame = sp;
974 dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
976 ret = rxq_rehash(dev, rxq_ctrl);
978 ret = rxq_ctrl_setup(dev, rxq_ctrl, 1 << rxq->elts_n,
979 rxq_ctrl->socket, NULL, rxq->mp);
982 /* Attempt to roll back in case of error. */
983 tmp = (mb_len << rxq->sges_n) - RTE_PKTMBUF_HEADROOM;
984 if (max_frame_len != tmp) {
988 /* Double fault, disable RX. */
992 * Use a safe RX burst function in case of error, otherwise mimic
996 ERROR("unable to reconfigure RX queues, RX disabled");
997 rx_func = removed_rx_burst;
998 } else if (restart &&
1000 !priv_create_hash_rxqs(priv) &&
1001 !priv_rehash_flows(priv)) {
1002 if (dev->data->dev_conf.fdir_conf.mode == RTE_FDIR_MODE_NONE)
1003 priv_fdir_enable(priv);
1004 priv_dev_interrupt_handler_install(priv, dev);
1007 /* Burst functions can now be called again. */
1009 dev->rx_pkt_burst = rx_func;
1017 * DPDK callback to get flow control status.
1020 * Pointer to Ethernet device structure.
1021 * @param[out] fc_conf
1022 * Flow control output buffer.
1025 * 0 on success, negative errno value on failure.
1028 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1030 struct priv *priv = dev->data->dev_private;
1032 struct ethtool_pauseparam ethpause = {
1033 .cmd = ETHTOOL_GPAUSEPARAM
1037 if (mlx5_is_secondary())
1038 return -E_RTE_SECONDARY;
1040 ifr.ifr_data = (void *)ðpause;
1042 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1044 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
1050 fc_conf->autoneg = ethpause.autoneg;
1051 if (ethpause.rx_pause && ethpause.tx_pause)
1052 fc_conf->mode = RTE_FC_FULL;
1053 else if (ethpause.rx_pause)
1054 fc_conf->mode = RTE_FC_RX_PAUSE;
1055 else if (ethpause.tx_pause)
1056 fc_conf->mode = RTE_FC_TX_PAUSE;
1058 fc_conf->mode = RTE_FC_NONE;
1068 * DPDK callback to modify flow control parameters.
1071 * Pointer to Ethernet device structure.
1072 * @param[in] fc_conf
1073 * Flow control parameters.
1076 * 0 on success, negative errno value on failure.
1079 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1081 struct priv *priv = dev->data->dev_private;
1083 struct ethtool_pauseparam ethpause = {
1084 .cmd = ETHTOOL_SPAUSEPARAM
1088 if (mlx5_is_secondary())
1089 return -E_RTE_SECONDARY;
1091 ifr.ifr_data = (void *)ðpause;
1092 ethpause.autoneg = fc_conf->autoneg;
1093 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1094 (fc_conf->mode & RTE_FC_RX_PAUSE))
1095 ethpause.rx_pause = 1;
1097 ethpause.rx_pause = 0;
1099 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1100 (fc_conf->mode & RTE_FC_TX_PAUSE))
1101 ethpause.tx_pause = 1;
1103 ethpause.tx_pause = 0;
1106 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1108 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1122 * Get PCI information from struct ibv_device.
1125 * Pointer to Ethernet device structure.
1126 * @param[out] pci_addr
1127 * PCI bus address output buffer.
1130 * 0 on success, -1 on failure and errno is set.
1133 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1134 struct rte_pci_addr *pci_addr)
1138 MKSTR(path, "%s/device/uevent", device->ibdev_path);
1140 file = fopen(path, "rb");
1143 while (fgets(line, sizeof(line), file) == line) {
1144 size_t len = strlen(line);
1147 /* Truncate long lines. */
1148 if (len == (sizeof(line) - 1))
1149 while (line[(len - 1)] != '\n') {
1153 line[(len - 1)] = ret;
1155 /* Extract information. */
1158 "%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1162 &pci_addr->function) == 4) {
1172 * Link status handler.
1175 * Pointer to private structure.
1177 * Pointer to the rte_eth_dev structure.
1180 * Nonzero if the callback process can be called immediately.
1183 priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
1185 struct ibv_async_event event;
1186 struct rte_eth_link *link = &dev->data->dev_link;
1189 /* Read all message and acknowledge them. */
1191 if (ibv_get_async_event(priv->ctx, &event))
1194 if (event.event_type != IBV_EVENT_PORT_ACTIVE &&
1195 event.event_type != IBV_EVENT_PORT_ERR)
1196 DEBUG("event type %d on port %d not handled",
1197 event.event_type, event.element.port_num);
1198 ibv_ack_async_event(&event);
1200 mlx5_link_update(dev, 0);
1201 if (((link->link_speed == 0) && link->link_status) ||
1202 ((link->link_speed != 0) && !link->link_status)) {
1203 if (!priv->pending_alarm) {
1204 /* Inconsistent status, check again later. */
1205 priv->pending_alarm = 1;
1206 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1207 mlx5_dev_link_status_handler,
1217 * Handle delayed link status event.
1220 * Registered argument.
1223 mlx5_dev_link_status_handler(void *arg)
1225 struct rte_eth_dev *dev = arg;
1226 struct priv *priv = dev->data->dev_private;
1230 assert(priv->pending_alarm == 1);
1231 priv->pending_alarm = 0;
1232 ret = priv_dev_link_status_handler(priv, dev);
1235 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1239 * Handle interrupts from the NIC.
1241 * @param[in] intr_handle
1242 * Interrupt handler.
1244 * Callback argument.
1247 mlx5_dev_interrupt_handler(struct rte_intr_handle *intr_handle, void *cb_arg)
1249 struct rte_eth_dev *dev = cb_arg;
1250 struct priv *priv = dev->data->dev_private;
1255 ret = priv_dev_link_status_handler(priv, dev);
1258 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1262 * Uninstall interrupt handler.
1265 * Pointer to private structure.
1267 * Pointer to the rte_eth_dev structure.
1270 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1272 if (!dev->data->dev_conf.intr_conf.lsc)
1274 rte_intr_callback_unregister(&priv->intr_handle,
1275 mlx5_dev_interrupt_handler,
1277 if (priv->pending_alarm)
1278 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1279 priv->pending_alarm = 0;
1280 priv->intr_handle.fd = 0;
1281 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1285 * Install interrupt handler.
1288 * Pointer to private structure.
1290 * Pointer to the rte_eth_dev structure.
1293 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1297 if (!dev->data->dev_conf.intr_conf.lsc)
1299 assert(priv->ctx->async_fd > 0);
1300 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1301 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1303 INFO("failed to change file descriptor async event queue");
1304 dev->data->dev_conf.intr_conf.lsc = 0;
1306 priv->intr_handle.fd = priv->ctx->async_fd;
1307 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1308 rte_intr_callback_register(&priv->intr_handle,
1309 mlx5_dev_interrupt_handler,
1315 * Change the link state (UP / DOWN).
1318 * Pointer to Ethernet device structure.
1320 * Nonzero for link up, otherwise link down.
1323 * 0 on success, errno value on failure.
1326 priv_set_link(struct priv *priv, int up)
1328 struct rte_eth_dev *dev = priv->dev;
1332 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1335 priv_select_tx_function(priv);
1336 priv_select_rx_function(priv);
1338 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1341 dev->rx_pkt_burst = removed_rx_burst;
1342 dev->tx_pkt_burst = removed_tx_burst;
1348 * DPDK callback to bring the link DOWN.
1351 * Pointer to Ethernet device structure.
1354 * 0 on success, errno value on failure.
1357 mlx5_set_link_down(struct rte_eth_dev *dev)
1359 struct priv *priv = dev->data->dev_private;
1363 err = priv_set_link(priv, 0);
1369 * DPDK callback to bring the link UP.
1372 * Pointer to Ethernet device structure.
1375 * 0 on success, errno value on failure.
1378 mlx5_set_link_up(struct rte_eth_dev *dev)
1380 struct priv *priv = dev->data->dev_private;
1384 err = priv_set_link(priv, 1);
1390 * Configure secondary process queues from a private data pointer (primary
1391 * or secondary) and update burst callbacks. Can take place only once.
1393 * All queues must have been previously created by the primary process to
1394 * avoid undefined behavior.
1397 * Private data pointer from either primary or secondary process.
1400 * Private data pointer from secondary process, NULL in case of error.
1403 mlx5_secondary_data_setup(struct priv *priv)
1405 unsigned int port_id = 0;
1406 struct mlx5_secondary_data *sd;
1409 unsigned int nb_tx_queues;
1410 unsigned int nb_rx_queues;
1413 /* priv must be valid at this point. */
1414 assert(priv != NULL);
1415 /* priv->dev must also be valid but may point to local memory from
1416 * another process, possibly with the same address and must not
1417 * be dereferenced yet. */
1418 assert(priv->dev != NULL);
1419 /* Determine port ID by finding out where priv comes from. */
1421 sd = &mlx5_secondary_data[port_id];
1422 rte_spinlock_lock(&sd->lock);
1423 /* Primary process? */
1424 if (sd->primary_priv == priv)
1426 /* Secondary process? */
1427 if (sd->data.dev_private == priv)
1429 rte_spinlock_unlock(&sd->lock);
1430 if (++port_id == RTE_DIM(mlx5_secondary_data))
1433 /* Switch to secondary private structure. If private data has already
1434 * been updated by another thread, there is nothing else to do. */
1435 priv = sd->data.dev_private;
1436 if (priv->dev->data == &sd->data)
1438 /* Sanity checks. Secondary private structure is supposed to point
1439 * to local eth_dev, itself still pointing to the shared device data
1440 * structure allocated by the primary process. */
1441 assert(sd->shared_dev_data != &sd->data);
1442 assert(sd->data.nb_tx_queues == 0);
1443 assert(sd->data.tx_queues == NULL);
1444 assert(sd->data.nb_rx_queues == 0);
1445 assert(sd->data.rx_queues == NULL);
1446 assert(priv != sd->primary_priv);
1447 assert(priv->dev->data == sd->shared_dev_data);
1448 assert(priv->txqs_n == 0);
1449 assert(priv->txqs == NULL);
1450 assert(priv->rxqs_n == 0);
1451 assert(priv->rxqs == NULL);
1452 nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
1453 nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
1454 /* Allocate local storage for queues. */
1455 tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
1456 sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
1457 RTE_CACHE_LINE_SIZE);
1458 rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
1459 sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
1460 RTE_CACHE_LINE_SIZE);
1461 if (tx_queues == NULL || rx_queues == NULL)
1463 /* Lock to prevent control operations during setup. */
1466 for (i = 0; i != nb_tx_queues; ++i) {
1467 struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
1468 struct txq_ctrl *primary_txq_ctrl;
1469 struct txq_ctrl *txq_ctrl;
1471 if (primary_txq == NULL)
1473 primary_txq_ctrl = container_of(primary_txq,
1474 struct txq_ctrl, txq);
1475 txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl) +
1476 (1 << primary_txq->elts_n) *
1477 sizeof(struct rte_mbuf *), 0,
1478 primary_txq_ctrl->socket);
1479 if (txq_ctrl != NULL) {
1480 if (txq_ctrl_setup(priv->dev,
1482 1 << primary_txq->elts_n,
1483 primary_txq_ctrl->socket,
1485 txq_ctrl->txq.stats.idx =
1486 primary_txq->stats.idx;
1487 tx_queues[i] = &txq_ctrl->txq;
1493 txq_ctrl = tx_queues[--i];
1494 txq_cleanup(txq_ctrl);
1500 for (i = 0; i != nb_rx_queues; ++i) {
1501 struct rxq_ctrl *primary_rxq =
1502 container_of((*sd->primary_priv->rxqs)[i],
1503 struct rxq_ctrl, rxq);
1505 if (primary_rxq == NULL)
1507 /* Not supported yet. */
1508 rx_queues[i] = NULL;
1510 /* Update everything. */
1511 priv->txqs = (void *)tx_queues;
1512 priv->txqs_n = nb_tx_queues;
1513 priv->rxqs = (void *)rx_queues;
1514 priv->rxqs_n = nb_rx_queues;
1515 sd->data.rx_queues = rx_queues;
1516 sd->data.tx_queues = tx_queues;
1517 sd->data.nb_rx_queues = nb_rx_queues;
1518 sd->data.nb_tx_queues = nb_tx_queues;
1519 sd->data.dev_link = sd->shared_dev_data->dev_link;
1520 sd->data.mtu = sd->shared_dev_data->mtu;
1521 memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
1522 sizeof(sd->data.rx_queue_state));
1523 memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
1524 sizeof(sd->data.tx_queue_state));
1525 sd->data.dev_flags = sd->shared_dev_data->dev_flags;
1526 /* Use local data from now on. */
1528 priv->dev->data = &sd->data;
1530 priv_select_tx_function(priv);
1531 priv_select_rx_function(priv);
1534 /* More sanity checks. */
1535 assert(priv->dev->data == &sd->data);
1536 rte_spinlock_unlock(&sd->lock);
1540 rte_free(tx_queues);
1541 rte_free(rx_queues);
1542 rte_spinlock_unlock(&sd->lock);
1547 * Configure the TX function to use.
1550 * Pointer to private structure.
1553 priv_select_tx_function(struct priv *priv)
1555 priv->dev->tx_pkt_burst = mlx5_tx_burst;
1556 /* Display warning for unsupported configurations. */
1557 if (priv->sriov && priv->mps)
1558 WARN("multi-packet send WQE cannot be used on a SR-IOV setup");
1559 /* Select appropriate TX function. */
1560 if ((priv->sriov == 0) && priv->mps && priv->txq_inline) {
1561 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1562 DEBUG("selected MPW inline TX function");
1563 } else if ((priv->sriov == 0) && priv->mps) {
1564 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1565 DEBUG("selected MPW TX function");
1570 * Configure the RX function to use.
1573 * Pointer to private structure.
1576 priv_select_rx_function(struct priv *priv)
1578 priv->dev->rx_pkt_burst = mlx5_rx_burst;