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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12 * notice, this list of conditions and the following disclaimer.
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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
122 #define ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32 (SCHAR_MAX)
125 * Return private structure associated with an Ethernet device.
128 * Pointer to Ethernet device structure.
131 * Pointer to private structure.
134 mlx5_get_priv(struct rte_eth_dev *dev)
136 struct mlx5_secondary_data *sd;
138 if (!mlx5_is_secondary())
139 return dev->data->dev_private;
140 sd = &mlx5_secondary_data[dev->data->port_id];
141 return sd->data.dev_private;
145 * Check if running as a secondary process.
148 * Nonzero if running as a secondary process.
151 mlx5_is_secondary(void)
153 return rte_eal_process_type() != RTE_PROC_PRIMARY;
157 * Get interface name from private structure.
160 * Pointer to private structure.
162 * Interface name output buffer.
165 * 0 on success, -1 on failure and errno is set.
168 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
172 unsigned int dev_type = 0;
173 unsigned int dev_port_prev = ~0u;
174 char match[IF_NAMESIZE] = "";
177 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
183 while ((dent = readdir(dir)) != NULL) {
184 char *name = dent->d_name;
186 unsigned int dev_port;
189 if ((name[0] == '.') &&
190 ((name[1] == '\0') ||
191 ((name[1] == '.') && (name[2] == '\0'))))
194 MKSTR(path, "%s/device/net/%s/%s",
195 priv->ctx->device->ibdev_path, name,
196 (dev_type ? "dev_id" : "dev_port"));
198 file = fopen(path, "rb");
203 * Switch to dev_id when dev_port does not exist as
204 * is the case with Linux kernel versions < 3.15.
215 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
220 * Switch to dev_id when dev_port returns the same value for
221 * all ports. May happen when using a MOFED release older than
222 * 3.0 with a Linux kernel >= 3.15.
224 if (dev_port == dev_port_prev)
226 dev_port_prev = dev_port;
227 if (dev_port == (priv->port - 1u))
228 snprintf(match, sizeof(match), "%s", name);
231 if (match[0] == '\0')
233 strncpy(*ifname, match, sizeof(*ifname));
238 * Check if the counter is located on ib counters file.
244 * 1 if counter is located on ib counters file , 0 otherwise.
247 priv_is_ib_cntr(const char *cntr)
249 if (!strcmp(cntr, "out_of_buffer"))
255 * Read from sysfs entry.
258 * Pointer to private structure.
260 * Entry name relative to sysfs path.
262 * Data output buffer.
267 * 0 on success, -1 on failure and errno is set.
270 priv_sysfs_read(const struct priv *priv, const char *entry,
271 char *buf, size_t size)
273 char ifname[IF_NAMESIZE];
278 if (priv_get_ifname(priv, &ifname))
281 if (priv_is_ib_cntr(entry)) {
282 MKSTR(path, "%s/ports/1/hw_counters/%s",
283 priv->ctx->device->ibdev_path, entry);
284 file = fopen(path, "rb");
286 MKSTR(path, "%s/device/net/%s/%s",
287 priv->ctx->device->ibdev_path, ifname, entry);
288 file = fopen(path, "rb");
292 ret = fread(buf, 1, size, file);
294 if (((size_t)ret < size) && (ferror(file)))
304 * Write to sysfs entry.
307 * Pointer to private structure.
309 * Entry name relative to sysfs path.
316 * 0 on success, -1 on failure and errno is set.
319 priv_sysfs_write(const struct priv *priv, const char *entry,
320 char *buf, size_t size)
322 char ifname[IF_NAMESIZE];
327 if (priv_get_ifname(priv, &ifname))
330 MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
333 file = fopen(path, "wb");
336 ret = fwrite(buf, 1, size, file);
338 if (((size_t)ret < size) || (ferror(file)))
348 * Get unsigned long sysfs property.
351 * Pointer to private structure.
353 * Entry name relative to sysfs path.
355 * Value output buffer.
358 * 0 on success, -1 on failure and errno is set.
361 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
364 unsigned long value_ret;
367 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
369 DEBUG("cannot read %s value from sysfs: %s",
370 name, strerror(errno));
373 value_str[ret] = '\0';
375 value_ret = strtoul(value_str, NULL, 0);
377 DEBUG("invalid %s value `%s': %s", name, value_str,
386 * Set unsigned long sysfs property.
389 * Pointer to private structure.
391 * Entry name relative to sysfs path.
396 * 0 on success, -1 on failure and errno is set.
399 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
402 MKSTR(value_str, "%lu", value);
404 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
406 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
407 name, value_str, value, strerror(errno));
414 * Perform ifreq ioctl() on associated Ethernet device.
417 * Pointer to private structure.
419 * Request number to pass to ioctl().
421 * Interface request structure output buffer.
424 * 0 on success, -1 on failure and errno is set.
427 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
429 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
434 if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
435 ret = ioctl(sock, req, ifr);
441 * Return the number of active VFs for the current device.
444 * Pointer to private structure.
445 * @param[out] num_vfs
446 * Number of active VFs.
449 * 0 on success, -1 on failure and errno is set.
452 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
454 /* The sysfs entry name depends on the operating system. */
455 const char **name = (const char *[]){
456 "device/sriov_numvfs",
457 "device/mlx5_num_vfs",
463 unsigned long ulong_num_vfs;
465 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
467 *num_vfs = ulong_num_vfs;
468 } while (*(++name) && ret);
476 * Pointer to private structure.
478 * MTU value output buffer.
481 * 0 on success, -1 on failure and errno is set.
484 priv_get_mtu(struct priv *priv, uint16_t *mtu)
486 unsigned long ulong_mtu;
488 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
495 * Read device counter from sysfs.
498 * Pointer to private structure.
502 * Counter output buffer.
505 * 0 on success, -1 on failure and errno is set.
508 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
510 unsigned long ulong_ctr;
512 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
522 * Pointer to private structure.
527 * 0 on success, -1 on failure and errno is set.
530 priv_set_mtu(struct priv *priv, uint16_t mtu)
534 if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
535 priv_get_mtu(priv, &new_mtu))
547 * Pointer to private structure.
549 * Bitmask for flags that must remain untouched.
551 * Bitmask for flags to modify.
554 * 0 on success, -1 on failure and errno is set.
557 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
561 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
564 tmp |= (flags & (~keep));
565 return priv_set_sysfs_ulong(priv, "flags", tmp);
569 * Ethernet device configuration.
571 * Prepare the driver for a given number of TX and RX queues.
574 * Pointer to Ethernet device structure.
577 * 0 on success, errno value on failure.
580 dev_configure(struct rte_eth_dev *dev)
582 struct priv *priv = dev->data->dev_private;
583 unsigned int rxqs_n = dev->data->nb_rx_queues;
584 unsigned int txqs_n = dev->data->nb_tx_queues;
587 unsigned int reta_idx_n;
589 priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
590 priv->rxqs = (void *)dev->data->rx_queues;
591 priv->txqs = (void *)dev->data->tx_queues;
592 if (txqs_n != priv->txqs_n) {
593 INFO("%p: TX queues number update: %u -> %u",
594 (void *)dev, priv->txqs_n, txqs_n);
595 priv->txqs_n = txqs_n;
597 if (rxqs_n > priv->ind_table_max_size) {
598 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
601 if (rxqs_n == priv->rxqs_n)
603 INFO("%p: RX queues number update: %u -> %u",
604 (void *)dev, priv->rxqs_n, rxqs_n);
605 priv->rxqs_n = rxqs_n;
606 /* If the requested number of RX queues is not a power of two, use the
607 * maximum indirection table size for better balancing.
608 * The result is always rounded to the next power of two. */
609 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
610 priv->ind_table_max_size :
612 if (priv_rss_reta_index_resize(priv, reta_idx_n))
614 /* When the number of RX queues is not a power of two, the remaining
615 * table entries are padded with reused WQs and hashes are not spread
617 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
618 (*priv->reta_idx)[i] = j;
626 * DPDK callback for Ethernet device configuration.
629 * Pointer to Ethernet device structure.
632 * 0 on success, negative errno value on failure.
635 mlx5_dev_configure(struct rte_eth_dev *dev)
637 struct priv *priv = dev->data->dev_private;
640 if (mlx5_is_secondary())
641 return -E_RTE_SECONDARY;
644 ret = dev_configure(dev);
651 * DPDK callback to get information about the device.
654 * Pointer to Ethernet device structure.
656 * Info structure output buffer.
659 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
661 struct priv *priv = mlx5_get_priv(dev);
663 char ifname[IF_NAMESIZE];
665 info->pci_dev = RTE_DEV_TO_PCI(dev->device);
668 /* FIXME: we should ask the device for these values. */
669 info->min_rx_bufsize = 32;
670 info->max_rx_pktlen = 65536;
672 * Since we need one CQ per QP, the limit is the minimum number
673 * between the two values.
675 max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
676 priv->device_attr.max_qp : priv->device_attr.max_cq);
677 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
680 info->max_rx_queues = max;
681 info->max_tx_queues = max;
682 info->max_mac_addrs = RTE_DIM(priv->mac);
683 info->rx_offload_capa =
685 (DEV_RX_OFFLOAD_IPV4_CKSUM |
686 DEV_RX_OFFLOAD_UDP_CKSUM |
687 DEV_RX_OFFLOAD_TCP_CKSUM) :
689 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
691 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
693 info->tx_offload_capa |=
694 (DEV_TX_OFFLOAD_IPV4_CKSUM |
695 DEV_TX_OFFLOAD_UDP_CKSUM |
696 DEV_TX_OFFLOAD_TCP_CKSUM);
698 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
700 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
701 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
702 DEV_TX_OFFLOAD_GRE_TNL_TSO);
703 if (priv_get_ifname(priv, &ifname) == 0)
704 info->if_index = if_nametoindex(ifname);
705 info->reta_size = priv->reta_idx_n ?
706 priv->reta_idx_n : priv->ind_table_max_size;
707 info->hash_key_size = ((*priv->rss_conf) ?
708 (*priv->rss_conf)[0]->rss_key_len :
710 info->speed_capa = priv->link_speed_capa;
715 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
717 static const uint32_t ptypes[] = {
718 /* refers to rxq_cq_to_pkt_type() */
719 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
720 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
721 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
722 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
727 if (dev->rx_pkt_burst == mlx5_rx_burst)
733 * DPDK callback to retrieve physical link information.
736 * Pointer to Ethernet device structure.
737 * @param wait_to_complete
738 * Wait for request completion (ignored).
741 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
743 struct priv *priv = mlx5_get_priv(dev);
744 struct ethtool_cmd edata = {
745 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
748 struct rte_eth_link dev_link;
751 /* priv_lock() is not taken to allow concurrent calls. */
753 (void)wait_to_complete;
754 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
755 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
758 memset(&dev_link, 0, sizeof(dev_link));
759 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
760 (ifr.ifr_flags & IFF_RUNNING));
761 ifr.ifr_data = (void *)&edata;
762 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
763 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
767 link_speed = ethtool_cmd_speed(&edata);
768 if (link_speed == -1)
769 dev_link.link_speed = 0;
771 dev_link.link_speed = link_speed;
772 priv->link_speed_capa = 0;
773 if (edata.supported & SUPPORTED_Autoneg)
774 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
775 if (edata.supported & (SUPPORTED_1000baseT_Full |
776 SUPPORTED_1000baseKX_Full))
777 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
778 if (edata.supported & SUPPORTED_10000baseKR_Full)
779 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
780 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
781 SUPPORTED_40000baseCR4_Full |
782 SUPPORTED_40000baseSR4_Full |
783 SUPPORTED_40000baseLR4_Full))
784 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
785 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
786 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
787 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
788 ETH_LINK_SPEED_FIXED);
789 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
790 /* Link status changed. */
791 dev->data->dev_link = dev_link;
794 /* Link status is still the same. */
799 * Retrieve physical link information (unlocked version using new ioctl).
802 * Pointer to Ethernet device structure.
803 * @param wait_to_complete
804 * Wait for request completion (ignored).
807 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
809 struct priv *priv = mlx5_get_priv(dev);
810 __extension__ struct {
811 struct ethtool_link_settings edata;
812 uint32_t link_mode_data[3 *
813 ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
817 struct rte_eth_link dev_link;
820 (void)wait_to_complete;
821 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
822 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
825 memset(&dev_link, 0, sizeof(dev_link));
826 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
827 (ifr.ifr_flags & IFF_RUNNING));
828 memset(&ecmd, 0, sizeof(ecmd));
829 ecmd.edata.cmd = ETHTOOL_GLINKSETTINGS;
830 ifr.ifr_data = (void *)&ecmd;
831 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
832 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
836 ecmd.edata.link_mode_masks_nwords = -ecmd.edata.link_mode_masks_nwords;
837 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
838 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
842 dev_link.link_speed = ecmd.edata.speed;
843 sc = ecmd.edata.link_mode_masks[0] |
844 ((uint64_t)ecmd.edata.link_mode_masks[1] << 32);
845 priv->link_speed_capa = 0;
846 if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT)
847 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
848 if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT |
849 ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))
850 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
851 if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT |
852 ETHTOOL_LINK_MODE_10000baseKR_Full_BIT |
853 ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))
854 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
855 if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT |
856 ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))
857 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
858 if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT |
859 ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT |
860 ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT |
861 ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))
862 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
863 if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT |
864 ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT |
865 ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT |
866 ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))
867 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
868 if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT |
869 ETHTOOL_LINK_MODE_25000baseKR_Full_BIT |
870 ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))
871 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
872 if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT |
873 ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))
874 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
875 if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT |
876 ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT |
877 ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT |
878 ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))
879 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
880 dev_link.link_duplex = ((ecmd.edata.duplex == DUPLEX_HALF) ?
881 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
882 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
883 ETH_LINK_SPEED_FIXED);
884 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
885 /* Link status changed. */
886 dev->data->dev_link = dev_link;
889 /* Link status is still the same. */
894 * DPDK callback to retrieve physical link information.
897 * Pointer to Ethernet device structure.
898 * @param wait_to_complete
899 * Wait for request completion (ignored).
902 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
904 struct utsname utsname;
907 if (uname(&utsname) == -1 ||
908 sscanf(utsname.release, "%d.%d.%d",
909 &ver[0], &ver[1], &ver[2]) != 3 ||
910 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
911 return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
912 return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
916 * DPDK callback to change the MTU.
918 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
919 * received). Use this as a hint to enable/disable scattered packets support
920 * and improve performance when not needed.
921 * Since failure is not an option, reconfiguring queues on the fly is not
925 * Pointer to Ethernet device structure.
930 * 0 on success, negative errno value on failure.
933 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
935 struct priv *priv = dev->data->dev_private;
938 uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
940 unsigned int max_frame_len;
942 int restart = priv->started;
944 if (mlx5_is_secondary())
945 return -E_RTE_SECONDARY;
948 /* Set kernel interface MTU first. */
949 if (priv_set_mtu(priv, mtu)) {
951 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
955 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
956 /* Temporarily replace RX handler with a fake one, assuming it has not
957 * been copied elsewhere. */
958 dev->rx_pkt_burst = removed_rx_burst;
959 /* Make sure everyone has left mlx5_rx_burst() and uses
960 * removed_rx_burst() instead. */
963 /* MTU does not include header and CRC. */
964 max_frame_len = ETHER_HDR_LEN + mtu + ETHER_CRC_LEN;
965 /* Check if at least one queue is going to need a SGE update. */
966 for (i = 0; i != priv->rxqs_n; ++i) {
967 struct rxq *rxq = (*priv->rxqs)[i];
969 unsigned int size = RTE_PKTMBUF_HEADROOM + max_frame_len;
974 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
975 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
977 * Determine the number of SGEs needed for a full packet
978 * and round it to the next power of two.
980 sges_n = log2above((size / mb_len) + !!(size % mb_len));
981 if (sges_n != rxq->sges_n)
985 * If all queues have the right number of SGEs, a simple rehash
986 * of their buffers is enough, otherwise SGE information can only
987 * be updated in a queue by recreating it. All resources that depend
988 * on queues (flows, indirection tables) must be recreated as well in
991 rehash = (i == priv->rxqs_n);
993 /* Clean up everything as with mlx5_dev_stop(). */
994 priv_special_flow_disable_all(priv);
995 priv_mac_addrs_disable(priv);
996 priv_destroy_hash_rxqs(priv);
997 priv_fdir_disable(priv);
998 priv_dev_interrupt_handler_uninstall(priv, dev);
1001 /* Reconfigure each RX queue. */
1002 for (i = 0; (i != priv->rxqs_n); ++i) {
1003 struct rxq *rxq = (*priv->rxqs)[i];
1004 struct rxq_ctrl *rxq_ctrl =
1005 container_of(rxq, struct rxq_ctrl, rxq);
1006 unsigned int mb_len;
1011 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
1012 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
1013 /* Provide new values to rxq_setup(). */
1014 dev->data->dev_conf.rxmode.jumbo_frame =
1015 (max_frame_len > ETHER_MAX_LEN);
1016 dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
1018 ret = rxq_rehash(dev, rxq_ctrl);
1020 ret = rxq_ctrl_setup(dev, rxq_ctrl, 1 << rxq->elts_n,
1021 rxq_ctrl->socket, NULL, rxq->mp);
1024 /* Attempt to roll back in case of error. */
1025 tmp = (mb_len << rxq->sges_n) - RTE_PKTMBUF_HEADROOM;
1026 if (max_frame_len != tmp) {
1027 max_frame_len = tmp;
1030 /* Double fault, disable RX. */
1034 * Use a safe RX burst function in case of error, otherwise mimic
1038 ERROR("unable to reconfigure RX queues, RX disabled");
1039 rx_func = removed_rx_burst;
1040 } else if (restart &&
1042 !priv_create_hash_rxqs(priv) &&
1043 !priv_rehash_flows(priv)) {
1044 if (dev->data->dev_conf.fdir_conf.mode == RTE_FDIR_MODE_NONE)
1045 priv_fdir_enable(priv);
1046 priv_dev_interrupt_handler_install(priv, dev);
1049 /* Burst functions can now be called again. */
1051 dev->rx_pkt_burst = rx_func;
1059 * DPDK callback to get flow control status.
1062 * Pointer to Ethernet device structure.
1063 * @param[out] fc_conf
1064 * Flow control output buffer.
1067 * 0 on success, negative errno value on failure.
1070 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1072 struct priv *priv = dev->data->dev_private;
1074 struct ethtool_pauseparam ethpause = {
1075 .cmd = ETHTOOL_GPAUSEPARAM
1079 if (mlx5_is_secondary())
1080 return -E_RTE_SECONDARY;
1082 ifr.ifr_data = (void *)ðpause;
1084 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1086 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
1092 fc_conf->autoneg = ethpause.autoneg;
1093 if (ethpause.rx_pause && ethpause.tx_pause)
1094 fc_conf->mode = RTE_FC_FULL;
1095 else if (ethpause.rx_pause)
1096 fc_conf->mode = RTE_FC_RX_PAUSE;
1097 else if (ethpause.tx_pause)
1098 fc_conf->mode = RTE_FC_TX_PAUSE;
1100 fc_conf->mode = RTE_FC_NONE;
1110 * DPDK callback to modify flow control parameters.
1113 * Pointer to Ethernet device structure.
1114 * @param[in] fc_conf
1115 * Flow control parameters.
1118 * 0 on success, negative errno value on failure.
1121 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1123 struct priv *priv = dev->data->dev_private;
1125 struct ethtool_pauseparam ethpause = {
1126 .cmd = ETHTOOL_SPAUSEPARAM
1130 if (mlx5_is_secondary())
1131 return -E_RTE_SECONDARY;
1133 ifr.ifr_data = (void *)ðpause;
1134 ethpause.autoneg = fc_conf->autoneg;
1135 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1136 (fc_conf->mode & RTE_FC_RX_PAUSE))
1137 ethpause.rx_pause = 1;
1139 ethpause.rx_pause = 0;
1141 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1142 (fc_conf->mode & RTE_FC_TX_PAUSE))
1143 ethpause.tx_pause = 1;
1145 ethpause.tx_pause = 0;
1148 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1150 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1164 * Get PCI information from struct ibv_device.
1167 * Pointer to Ethernet device structure.
1168 * @param[out] pci_addr
1169 * PCI bus address output buffer.
1172 * 0 on success, -1 on failure and errno is set.
1175 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1176 struct rte_pci_addr *pci_addr)
1180 MKSTR(path, "%s/device/uevent", device->ibdev_path);
1182 file = fopen(path, "rb");
1185 while (fgets(line, sizeof(line), file) == line) {
1186 size_t len = strlen(line);
1189 /* Truncate long lines. */
1190 if (len == (sizeof(line) - 1))
1191 while (line[(len - 1)] != '\n') {
1195 line[(len - 1)] = ret;
1197 /* Extract information. */
1200 "%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1204 &pci_addr->function) == 4) {
1214 * Link status handler.
1217 * Pointer to private structure.
1219 * Pointer to the rte_eth_dev structure.
1222 * Nonzero if the callback process can be called immediately.
1225 priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
1227 struct ibv_async_event event;
1228 struct rte_eth_link *link = &dev->data->dev_link;
1231 /* Read all message and acknowledge them. */
1233 if (ibv_get_async_event(priv->ctx, &event))
1236 if (event.event_type != IBV_EVENT_PORT_ACTIVE &&
1237 event.event_type != IBV_EVENT_PORT_ERR)
1238 DEBUG("event type %d on port %d not handled",
1239 event.event_type, event.element.port_num);
1240 ibv_ack_async_event(&event);
1242 mlx5_link_update(dev, 0);
1243 if (((link->link_speed == 0) && link->link_status) ||
1244 ((link->link_speed != 0) && !link->link_status)) {
1245 if (!priv->pending_alarm) {
1246 /* Inconsistent status, check again later. */
1247 priv->pending_alarm = 1;
1248 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1249 mlx5_dev_link_status_handler,
1259 * Handle delayed link status event.
1262 * Registered argument.
1265 mlx5_dev_link_status_handler(void *arg)
1267 struct rte_eth_dev *dev = arg;
1268 struct priv *priv = dev->data->dev_private;
1272 assert(priv->pending_alarm == 1);
1273 priv->pending_alarm = 0;
1274 ret = priv_dev_link_status_handler(priv, dev);
1277 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1281 * Handle interrupts from the NIC.
1283 * @param[in] intr_handle
1284 * Interrupt handler.
1286 * Callback argument.
1289 mlx5_dev_interrupt_handler(void *cb_arg)
1291 struct rte_eth_dev *dev = cb_arg;
1292 struct priv *priv = dev->data->dev_private;
1296 ret = priv_dev_link_status_handler(priv, dev);
1299 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1303 * Uninstall interrupt handler.
1306 * Pointer to private structure.
1308 * Pointer to the rte_eth_dev structure.
1311 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1313 if (!dev->data->dev_conf.intr_conf.lsc)
1315 rte_intr_callback_unregister(&priv->intr_handle,
1316 mlx5_dev_interrupt_handler,
1318 if (priv->pending_alarm)
1319 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1320 priv->pending_alarm = 0;
1321 priv->intr_handle.fd = 0;
1322 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1326 * Install interrupt handler.
1329 * Pointer to private structure.
1331 * Pointer to the rte_eth_dev structure.
1334 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1338 if (!dev->data->dev_conf.intr_conf.lsc)
1340 assert(priv->ctx->async_fd > 0);
1341 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1342 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1344 INFO("failed to change file descriptor async event queue");
1345 dev->data->dev_conf.intr_conf.lsc = 0;
1347 priv->intr_handle.fd = priv->ctx->async_fd;
1348 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1349 rte_intr_callback_register(&priv->intr_handle,
1350 mlx5_dev_interrupt_handler,
1356 * Change the link state (UP / DOWN).
1359 * Pointer to Ethernet device structure.
1361 * Nonzero for link up, otherwise link down.
1364 * 0 on success, errno value on failure.
1367 priv_set_link(struct priv *priv, int up)
1369 struct rte_eth_dev *dev = priv->dev;
1373 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1376 priv_select_tx_function(priv);
1377 priv_select_rx_function(priv);
1379 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1382 dev->rx_pkt_burst = removed_rx_burst;
1383 dev->tx_pkt_burst = removed_tx_burst;
1389 * DPDK callback to bring the link DOWN.
1392 * Pointer to Ethernet device structure.
1395 * 0 on success, errno value on failure.
1398 mlx5_set_link_down(struct rte_eth_dev *dev)
1400 struct priv *priv = dev->data->dev_private;
1404 err = priv_set_link(priv, 0);
1410 * DPDK callback to bring the link UP.
1413 * Pointer to Ethernet device structure.
1416 * 0 on success, errno value on failure.
1419 mlx5_set_link_up(struct rte_eth_dev *dev)
1421 struct priv *priv = dev->data->dev_private;
1425 err = priv_set_link(priv, 1);
1431 * Configure secondary process queues from a private data pointer (primary
1432 * or secondary) and update burst callbacks. Can take place only once.
1434 * All queues must have been previously created by the primary process to
1435 * avoid undefined behavior.
1438 * Private data pointer from either primary or secondary process.
1441 * Private data pointer from secondary process, NULL in case of error.
1444 mlx5_secondary_data_setup(struct priv *priv)
1446 unsigned int port_id = 0;
1447 struct mlx5_secondary_data *sd;
1450 unsigned int nb_tx_queues;
1451 unsigned int nb_rx_queues;
1454 /* priv must be valid at this point. */
1455 assert(priv != NULL);
1456 /* priv->dev must also be valid but may point to local memory from
1457 * another process, possibly with the same address and must not
1458 * be dereferenced yet. */
1459 assert(priv->dev != NULL);
1460 /* Determine port ID by finding out where priv comes from. */
1462 sd = &mlx5_secondary_data[port_id];
1463 rte_spinlock_lock(&sd->lock);
1464 /* Primary process? */
1465 if (sd->primary_priv == priv)
1467 /* Secondary process? */
1468 if (sd->data.dev_private == priv)
1470 rte_spinlock_unlock(&sd->lock);
1471 if (++port_id == RTE_DIM(mlx5_secondary_data))
1474 /* Switch to secondary private structure. If private data has already
1475 * been updated by another thread, there is nothing else to do. */
1476 priv = sd->data.dev_private;
1477 if (priv->dev->data == &sd->data)
1479 /* Sanity checks. Secondary private structure is supposed to point
1480 * to local eth_dev, itself still pointing to the shared device data
1481 * structure allocated by the primary process. */
1482 assert(sd->shared_dev_data != &sd->data);
1483 assert(sd->data.nb_tx_queues == 0);
1484 assert(sd->data.tx_queues == NULL);
1485 assert(sd->data.nb_rx_queues == 0);
1486 assert(sd->data.rx_queues == NULL);
1487 assert(priv != sd->primary_priv);
1488 assert(priv->dev->data == sd->shared_dev_data);
1489 assert(priv->txqs_n == 0);
1490 assert(priv->txqs == NULL);
1491 assert(priv->rxqs_n == 0);
1492 assert(priv->rxqs == NULL);
1493 nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
1494 nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
1495 /* Allocate local storage for queues. */
1496 tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
1497 sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
1498 RTE_CACHE_LINE_SIZE);
1499 rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
1500 sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
1501 RTE_CACHE_LINE_SIZE);
1502 if (tx_queues == NULL || rx_queues == NULL)
1504 /* Lock to prevent control operations during setup. */
1507 for (i = 0; i != nb_tx_queues; ++i) {
1508 struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
1509 struct txq_ctrl *primary_txq_ctrl;
1510 struct txq_ctrl *txq_ctrl;
1512 if (primary_txq == NULL)
1514 primary_txq_ctrl = container_of(primary_txq,
1515 struct txq_ctrl, txq);
1516 txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl) +
1517 (1 << primary_txq->elts_n) *
1518 sizeof(struct rte_mbuf *), 0,
1519 primary_txq_ctrl->socket);
1520 if (txq_ctrl != NULL) {
1521 if (txq_ctrl_setup(priv->dev,
1523 1 << primary_txq->elts_n,
1524 primary_txq_ctrl->socket,
1526 txq_ctrl->txq.stats.idx =
1527 primary_txq->stats.idx;
1528 tx_queues[i] = &txq_ctrl->txq;
1534 txq_ctrl = tx_queues[--i];
1535 txq_cleanup(txq_ctrl);
1541 for (i = 0; i != nb_rx_queues; ++i) {
1542 struct rxq_ctrl *primary_rxq =
1543 container_of((*sd->primary_priv->rxqs)[i],
1544 struct rxq_ctrl, rxq);
1546 if (primary_rxq == NULL)
1548 /* Not supported yet. */
1549 rx_queues[i] = NULL;
1551 /* Update everything. */
1552 priv->txqs = (void *)tx_queues;
1553 priv->txqs_n = nb_tx_queues;
1554 priv->rxqs = (void *)rx_queues;
1555 priv->rxqs_n = nb_rx_queues;
1556 sd->data.rx_queues = rx_queues;
1557 sd->data.tx_queues = tx_queues;
1558 sd->data.nb_rx_queues = nb_rx_queues;
1559 sd->data.nb_tx_queues = nb_tx_queues;
1560 sd->data.dev_link = sd->shared_dev_data->dev_link;
1561 sd->data.mtu = sd->shared_dev_data->mtu;
1562 memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
1563 sizeof(sd->data.rx_queue_state));
1564 memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
1565 sizeof(sd->data.tx_queue_state));
1566 sd->data.dev_flags = sd->shared_dev_data->dev_flags;
1567 /* Use local data from now on. */
1569 priv->dev->data = &sd->data;
1571 priv_select_tx_function(priv);
1572 priv_select_rx_function(priv);
1575 /* More sanity checks. */
1576 assert(priv->dev->data == &sd->data);
1577 rte_spinlock_unlock(&sd->lock);
1581 rte_free(tx_queues);
1582 rte_free(rx_queues);
1583 rte_spinlock_unlock(&sd->lock);
1588 * Configure the TX function to use.
1591 * Pointer to private structure.
1594 priv_select_tx_function(struct priv *priv)
1596 priv->dev->tx_pkt_burst = mlx5_tx_burst;
1597 /* Select appropriate TX function. */
1598 if (priv->mps == MLX5_MPW_ENHANCED) {
1599 priv->dev->tx_pkt_burst =
1601 DEBUG("selected Enhanced MPW TX function");
1602 } else if (priv->mps && priv->txq_inline) {
1603 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1604 DEBUG("selected MPW inline TX function");
1605 } else if (priv->mps) {
1606 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1607 DEBUG("selected MPW TX function");
1612 * Configure the RX function to use.
1615 * Pointer to private structure.
1618 priv_select_rx_function(struct priv *priv)
1620 priv->dev->rx_pkt_burst = mlx5_rx_burst;